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* remove all occurrences of all switches beginning with -S from the
396 Call the named function FUNCTION, passing it ARGS. ARGS is
397 first processed as a nested spec string, then split into an
398 argument vector in the usual fashion. The function returns
399 a string which is processed as if it had appeared literally
400 as part of the current spec.
401 %{S} substitutes the -S switch, if that switch was given to GCC.
402 If that switch was not specified, this substitutes nothing.
403 Here S is a metasyntactic variable.
404 %{S*} substitutes all the switches specified to GCC whose names start
405 with -S. This is used for -o, -I, etc; switches that take
406 arguments. GCC considers `-o foo' as being one switch whose
407 name starts with `o'. %{o*} would substitute this text,
408 including the space; thus, two arguments would be generated.
409 %{S*&T*} likewise, but preserve order of S and T options (the order
410 of S and T in the spec is not significant). Can be any number
411 of ampersand-separated variables; for each the wild card is
412 optional. Useful for CPP as %{D*&U*&A*}.
414 %{S:X} substitutes X, if the -S switch was given to GCC.
415 %{!S:X} substitutes X, if the -S switch was NOT given to GCC.
416 %{S*:X} substitutes X if one or more switches whose names start
417 with -S was given to GCC. Normally X is substituted only
418 once, no matter how many such switches appeared. However,
419 if %* appears somewhere in X, then X will be substituted
420 once for each matching switch, with the %* replaced by the
421 part of that switch that matched the '*'.
422 %{.S:X} substitutes X, if processing a file with suffix S.
423 %{!.S:X} substitutes X, if NOT processing a file with suffix S.
424 %{,S:X} substitutes X, if processing a file which will use spec S.
425 %{!,S:X} substitutes X, if NOT processing a file which will use spec S.
427 %{S|T:X} substitutes X if either -S or -T was given to GCC. This may be
428 combined with '!', '.', ',', and '*' as above binding stronger
430 If %* appears in X, all of the alternatives must be starred, and
431 only the first matching alternative is substituted.
432 %{S:X; if S was given to GCC, substitutes X;
433 T:Y; else if T was given to GCC, substitutes Y;
434 :D} else substitutes D. There can be as many clauses as you need.
435 This may be combined with '.', '!', ',', '|', and '*' as above.
437 %(Spec) processes a specification defined in a specs file as *Spec:
438 %[Spec] as above, but put __ around -D arguments
440 The conditional text X in a %{S:X} or similar construct may contain
441 other nested % constructs or spaces, or even newlines. They are
442 processed as usual, as described above. Trailing white space in X is
443 ignored. White space may also appear anywhere on the left side of the
444 colon in these constructs, except between . or * and the corresponding
447 The -O, -f, -m, and -W switches are handled specifically in these
448 constructs. If another value of -O or the negated form of a -f, -m, or
449 -W switch is found later in the command line, the earlier switch
450 value is ignored, except with {S*} where S is just one letter; this
451 passes all matching options.
453 The character | at the beginning of the predicate text is used to indicate
454 that a command should be piped to the following command, but only if -pipe
457 Note that it is built into GCC which switches take arguments and which
458 do not. You might think it would be useful to generalize this to
459 allow each compiler's spec to say which switches take arguments. But
460 this cannot be done in a consistent fashion. GCC cannot even decide
461 which input files have been specified without knowing which switches
462 take arguments, and it must know which input files to compile in order
463 to tell which compilers to run.
465 GCC also knows implicitly that arguments starting in `-l' are to be
466 treated as compiler output files, and passed to the linker in their
467 proper position among the other output files. */
469 /* Define the macros used for specs %a, %l, %L, %S, %C, %1. */
471 /* config.h can define ASM_SPEC to provide extra args to the assembler
472 or extra switch-translations. */
477 /* config.h can define ASM_FINAL_SPEC to run a post processor after
478 the assembler has run. */
479 #ifndef ASM_FINAL_SPEC
480 #define ASM_FINAL_SPEC ""
483 /* config.h can define CPP_SPEC to provide extra args to the C preprocessor
484 or extra switch-translations. */
489 /* config.h can define CC1_SPEC to provide extra args to cc1 and cc1plus
490 or extra switch-translations. */
495 /* config.h can define CC1PLUS_SPEC to provide extra args to cc1plus
496 or extra switch-translations. */
498 #define CC1PLUS_SPEC ""
501 /* config.h can define LINK_SPEC to provide extra args to the linker
502 or extra switch-translations. */
507 /* config.h can define LIB_SPEC to override the default libraries. */
509 #define LIB_SPEC "%{!shared:%{g*:-lg} %{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p}}"
514 /* XXX: valid only for GNU ld */
515 /* XXX: should exactly match hooks provided by libmudflap.a */
516 #define MFWRAP_SPEC " %{static: %{fmudflap|fmudflapth: \
517 --wrap=malloc --wrap=free --wrap=calloc --wrap=realloc\
518 --wrap=mmap --wrap=munmap --wrap=alloca\
519 } %{fmudflapth: --wrap=pthread_create\
520 }} %{fmudflap|fmudflapth: --wrap=main}"
523 #define MFLIB_SPEC "%{fmudflap|fmudflapth: -export-dynamic}"
526 /* When using -fsplit-stack we need to wrap pthread_create, in order
527 to initialize the stack guard. We always use wrapping, rather than
528 shared library ordering, and we keep the wrapper function in
529 libgcc. This is not yet a real spec, though it could become one;
530 it is currently just stuffed into LINK_SPEC. FIXME: This wrapping
531 only works with GNU ld and gold. FIXME: This is incompatible with
532 -fmudflap when linking statically, which wants to do its own
534 #define STACK_SPLIT_SPEC " %{fsplit-stack: --wrap=pthread_create}"
536 /* config.h can define LIBGCC_SPEC to override how and when libgcc.a is
539 #if defined(REAL_LIBGCC_SPEC)
540 #define LIBGCC_SPEC REAL_LIBGCC_SPEC
541 #elif defined(LINK_LIBGCC_SPECIAL_1)
542 /* Have gcc do the search for libgcc.a. */
543 #define LIBGCC_SPEC "libgcc.a%s"
545 #define LIBGCC_SPEC "-lgcc"
549 /* config.h can define STARTFILE_SPEC to override the default crt0 files. */
550 #ifndef STARTFILE_SPEC
551 #define STARTFILE_SPEC \
552 "%{!shared:%{pg:gcrt0%O%s}%{!pg:%{p:mcrt0%O%s}%{!p:crt0%O%s}}}"
555 /* config.h can define ENDFILE_SPEC to override the default crtn files. */
557 #define ENDFILE_SPEC ""
561 #define LINKER_NAME "collect2"
564 #ifdef HAVE_AS_DEBUG_PREFIX_MAP
565 #define ASM_MAP " %{fdebug-prefix-map=*:--debug-prefix-map %*}"
570 /* Define ASM_DEBUG_SPEC to be a spec suitable for translating '-g'
572 #ifndef ASM_DEBUG_SPEC
573 # if defined(DBX_DEBUGGING_INFO) && defined(DWARF2_DEBUGGING_INFO) \
574 && defined(HAVE_AS_GDWARF2_DEBUG_FLAG) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
575 # define ASM_DEBUG_SPEC \
576 (PREFERRED_DEBUGGING_TYPE == DBX_DEBUG \
577 ? "%{!g0:%{gdwarf-2*:--gdwarf2}%{!gdwarf-2*:%{g*:--gstabs}}}" ASM_MAP \
578 : "%{!g0:%{gstabs*:--gstabs}%{!gstabs*:%{g*:--gdwarf2}}}" ASM_MAP)
580 # if defined(DBX_DEBUGGING_INFO) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
581 # define ASM_DEBUG_SPEC "%{g*:%{!g0:--gstabs}}" ASM_MAP
583 # if defined(DWARF2_DEBUGGING_INFO) && defined(HAVE_AS_GDWARF2_DEBUG_FLAG)
584 # define ASM_DEBUG_SPEC "%{g*:%{!g0:--gdwarf2}}" ASM_MAP
588 #ifndef ASM_DEBUG_SPEC
589 # define ASM_DEBUG_SPEC ""
592 /* Here is the spec for running the linker, after compiling all files. */
594 /* This is overridable by the target in case they need to specify the
595 -lgcc and -lc order specially, yet not require them to override all
596 of LINK_COMMAND_SPEC. */
597 #ifndef LINK_GCC_C_SEQUENCE_SPEC
598 #define LINK_GCC_C_SEQUENCE_SPEC "%G %L %G"
601 #ifndef LINK_SSP_SPEC
602 #ifdef TARGET_LIBC_PROVIDES_SSP
603 #define LINK_SSP_SPEC "%{fstack-protector:}"
605 #define LINK_SSP_SPEC "%{fstack-protector|fstack-protector-all:-lssp_nonshared -lssp}"
609 #ifndef LINK_PIE_SPEC
611 #define LINK_PIE_SPEC "%{pie:-pie} "
613 #define LINK_PIE_SPEC "%{pie:} "
617 #ifndef LINK_BUILDID_SPEC
618 # if defined(HAVE_LD_BUILDID) && defined(ENABLE_LD_BUILDID)
619 # define LINK_BUILDID_SPEC "%{!r:--build-id} "
624 /* -u* was put back because both BSD and SysV seem to support it. */
625 /* %{static:} simply prevents an error message if the target machine
626 doesn't handle -static. */
627 /* We want %{T*} after %{L*} and %D so that it can be used to specify linker
628 scripts which exist in user specified directories, or in standard
630 /* We pass any -flto flags on to the linker, which is expected
631 to understand them. In practice, this means it had better be collect2. */
632 #ifndef LINK_COMMAND_SPEC
633 #define LINK_COMMAND_SPEC "\
634 %{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:\
636 %{fuse-linker-plugin: \
637 -plugin %(linker_plugin_file) \
638 -plugin-opt=%(lto_wrapper) \
639 -plugin-opt=-fresolution=%u.res \
640 %{!nostdlib:%{!nodefaultlibs:%:pass-through-libs(%(link_gcc_c_sequence))}} \
642 %{flto*:%<fcompare-debug*} \
643 %{flto*} %l " LINK_PIE_SPEC \
644 "%X %{o*} %{A} %{d} %{e*} %{m} %{N} %{n} %{r}\
645 %{s} %{t} %{u*} %{z} %{Z} %{!A:%{!nostdlib:%{!nostartfiles:%S}}}\
646 %{static:} %{L*} %(mfwrap) %(link_libgcc) %o\
647 %{fopenmp|ftree-parallelize-loops=*:%:include(libgomp.spec)%(link_gomp)}\
648 %(mflib) " STACK_SPLIT_SPEC "\
649 %{fprofile-arcs|fprofile-generate*|coverage:-lgcov}\
650 %{!nostdlib:%{!nodefaultlibs:%(link_ssp) %(link_gcc_c_sequence)}}\
651 %{!A:%{!nostdlib:%{!nostartfiles:%E}}} %{T*} }}}}}}"
654 #ifndef LINK_LIBGCC_SPEC
655 /* Generate -L options for startfile prefix list. */
656 # define LINK_LIBGCC_SPEC "%D"
659 #ifndef STARTFILE_PREFIX_SPEC
660 # define STARTFILE_PREFIX_SPEC ""
664 # define SYSROOT_SPEC "--sysroot=%R"
667 #ifndef SYSROOT_SUFFIX_SPEC
668 # define SYSROOT_SUFFIX_SPEC ""
671 #ifndef SYSROOT_HEADERS_SUFFIX_SPEC
672 # define SYSROOT_HEADERS_SUFFIX_SPEC ""
675 static const char *asm_debug;
676 static const char *cpp_spec = CPP_SPEC;
677 static const char *cc1_spec = CC1_SPEC;
678 static const char *cc1plus_spec = CC1PLUS_SPEC;
679 static const char *link_gcc_c_sequence_spec = LINK_GCC_C_SEQUENCE_SPEC;
680 static const char *link_ssp_spec = LINK_SSP_SPEC;
681 static const char *asm_spec = ASM_SPEC;
682 static const char *asm_final_spec = ASM_FINAL_SPEC;
683 static const char *link_spec = LINK_SPEC;
684 static const char *lib_spec = LIB_SPEC;
685 static const char *mfwrap_spec = MFWRAP_SPEC;
686 static const char *mflib_spec = MFLIB_SPEC;
687 static const char *link_gomp_spec = "";
688 static const char *libgcc_spec = LIBGCC_SPEC;
689 static const char *endfile_spec = ENDFILE_SPEC;
690 static const char *startfile_spec = STARTFILE_SPEC;
691 static const char *linker_name_spec = LINKER_NAME;
692 static const char *linker_plugin_file_spec = "";
693 static const char *lto_wrapper_spec = "";
694 static const char *lto_gcc_spec = "";
695 static const char *link_command_spec = LINK_COMMAND_SPEC;
696 static const char *link_libgcc_spec = LINK_LIBGCC_SPEC;
697 static const char *startfile_prefix_spec = STARTFILE_PREFIX_SPEC;
698 static const char *sysroot_spec = SYSROOT_SPEC;
699 static const char *sysroot_suffix_spec = SYSROOT_SUFFIX_SPEC;
700 static const char *sysroot_hdrs_suffix_spec = SYSROOT_HEADERS_SUFFIX_SPEC;
702 /* Standard options to cpp, cc1, and as, to reduce duplication in specs.
703 There should be no need to override these in target dependent files,
704 but we need to copy them to the specs file so that newer versions
705 of the GCC driver can correctly drive older tool chains with the
706 appropriate -B options. */
708 /* When cpplib handles traditional preprocessing, get rid of this, and
709 call cc1 (or cc1obj in objc/lang-specs.h) from the main specs so
710 that we default the front end language better. */
711 static const char *trad_capable_cpp =
712 "cc1 -E %{traditional|ftraditional|traditional-cpp:-traditional-cpp}";
714 /* We don't wrap .d files in %W{} since a missing .d file, and
715 therefore no dependency entry, confuses make into thinking a .o
716 file that happens to exist is up-to-date. */
717 static const char *cpp_unique_options =
718 "%{!Q:-quiet} %{nostdinc*} %{C} %{CC} %{v} %{I*&F*} %{P} %I\
719 %{MD:-MD %{!o:%b.d}%{o*:%.d%*}}\
720 %{MMD:-MMD %{!o:%b.d}%{o*:%.d%*}}\
721 %{M} %{MM} %{MF*} %{MG} %{MP} %{MQ*} %{MT*}\
722 %{!E:%{!M:%{!MM:%{!MT:%{!MQ:%{MD|MMD:%{o*:-MQ %*}}}}}}}\
723 %{remap} %{g3|ggdb3|gstabs3|gcoff3|gxcoff3|gvms3:-dD}\
724 %{!iplugindir*:%{fplugin*:%:find-plugindir()}}\
725 %{H} %C %{D*&U*&A*} %{i*} %Z %i\
726 %{fmudflap:-D_MUDFLAP -include mf-runtime.h}\
727 %{fmudflapth:-D_MUDFLAP -D_MUDFLAPTH -include mf-runtime.h}\
730 /* This contains cpp options which are common with cc1_options and are passed
731 only when preprocessing only to avoid duplication. We pass the cc1 spec
732 options to the preprocessor so that it the cc1 spec may manipulate
733 options used to set target flags. Those special target flags settings may
734 in turn cause preprocessor symbols to be defined specially. */
735 static const char *cpp_options =
736 "%(cpp_unique_options) %1 %{m*} %{std*&ansi&trigraphs} %{W*&pedantic*} %{w}\
737 %{f*} %{g*:%{!g0:%{g*} %{!fno-working-directory:-fworking-directory}}} %{O*}\
738 %{undef} %{save-temps*:-fpch-preprocess}";
740 /* This contains cpp options which are not passed when the preprocessor
741 output will be used by another program. */
742 static const char *cpp_debug_options = "%{d*}";
744 /* NB: This is shared amongst all front-ends, except for Ada. */
745 static const char *cc1_options =
746 "%{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\
747 %{!iplugindir*:%{fplugin*:%:find-plugindir()}}\
748 %1 %{!Q:-quiet} %{!dumpbase:-dumpbase %B} %{d*} %{m*} %{aux-info*}\
749 %{fcompare-debug-second:%:compare-debug-auxbase-opt(%b)} \
750 %{!fcompare-debug-second:%{c|S:%{o*:-auxbase-strip %*}%{!o*:-auxbase %b}}}%{!c:%{!S:-auxbase %b}} \
751 %{g*} %{O*} %{W*&pedantic*} %{w} %{std*&ansi&trigraphs}\
752 %{v:-version} %{pg:-p} %{p} %{f*} %{undef}\
753 %{Qn:-fno-ident} %{-help:--help}\
754 %{-target-help:--target-help}\
755 %{-version:--version}\
756 %{-help=*:--help=%*}\
757 %{!fsyntax-only:%{S:%W{o*}%{!o*:-o %b.s}}}\
758 %{fsyntax-only:-o %j} %{-param*}\
759 %{fmudflap|fmudflapth:-fno-builtin -fno-merge-constants}\
760 %{coverage:-fprofile-arcs -ftest-coverage}";
762 static const char *asm_options =
763 "%{--target-help:%:print-asm-header()} "
765 /* If GNU AS is used, then convert -w (no warnings), -I, and -v
766 to the assembler equivalents. */
767 "%{v} %{w:-W} %{I*} "
769 "%a %Y %{c:%W{o*}%{!o*:-o %w%b%O}}%{!c:-o %d%w%u%O}";
771 static const char *invoke_as =
772 #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT
774 %{fcompare-debug=*|fdump-final-insns=*:%:compare-debug-dump-opt()}\
775 %{!S:-o %|.s |\n as %(asm_options) %|.s %A }\
779 %{fcompare-debug=*|fdump-final-insns=*:%:compare-debug-dump-opt()}\
780 %{!S:-o %|.s |\n as %(asm_options) %m.s %A }\
784 /* Some compilers have limits on line lengths, and the multilib_select
785 and/or multilib_matches strings can be very long, so we build them at
787 static struct obstack multilib_obstack;
788 static const char *multilib_select;
789 static const char *multilib_matches;
790 static const char *multilib_defaults;
791 static const char *multilib_exclusions;
793 /* Check whether a particular argument is a default argument. */
795 #ifndef MULTILIB_DEFAULTS
796 #define MULTILIB_DEFAULTS { "" }
799 static const char *const multilib_defaults_raw[] = MULTILIB_DEFAULTS;
801 #ifndef DRIVER_SELF_SPECS
802 #define DRIVER_SELF_SPECS ""
805 /* Adding -fopenmp should imply pthreads. This is particularly important
806 for targets that use different start files and suchlike. */
807 #ifndef GOMP_SELF_SPECS
808 #define GOMP_SELF_SPECS "%{fopenmp|ftree-parallelize-loops=*: -pthread}"
811 static const char *const driver_self_specs[] = {
812 "%{fdump-final-insns:-fdump-final-insns=.} %<fdump-final-insns",
813 DRIVER_SELF_SPECS, CONFIGURE_SPECS, GOMP_SELF_SPECS
816 #ifndef OPTION_DEFAULT_SPECS
817 #define OPTION_DEFAULT_SPECS { "", "" }
826 static const struct default_spec
827 option_default_specs[] = { OPTION_DEFAULT_SPECS };
831 struct user_specs *next;
832 const char *filename;
835 static struct user_specs *user_specs_head, *user_specs_tail;
838 /* Record the mapping from file suffixes for compilation specs. */
842 const char *suffix; /* Use this compiler for input files
843 whose names end in this suffix. */
845 const char *spec; /* To use this compiler, run this spec. */
847 const char *cpp_spec; /* If non-NULL, substitute this spec
848 for `%C', rather than the usual
850 const int combinable; /* If nonzero, compiler can deal with
851 multiple source files at once (IMA). */
852 const int needs_preprocessing; /* If nonzero, source files need to
853 be run through a preprocessor. */
856 /* Pointer to a vector of `struct compiler' that gives the spec for
857 compiling a file, based on its suffix.
858 A file that does not end in any of these suffixes will be passed
859 unchanged to the loader and nothing else will be done to it.
861 An entry containing two 0s is used to terminate the vector.
863 If multiple entries match a file, the last matching one is used. */
865 static struct compiler *compilers;
867 /* Number of entries in `compilers', not counting the null terminator. */
869 static int n_compilers;
871 /* The default list of file name suffixes and their compilation specs. */
873 static const struct compiler default_compilers[] =
875 /* Add lists of suffixes of known languages here. If those languages
876 were not present when we built the driver, we will hit these copies
877 and be given a more meaningful error than "file not used since
878 linking is not done". */
879 {".m", "#Objective-C", 0, 0, 0}, {".mi", "#Objective-C", 0, 0, 0},
880 {".mm", "#Objective-C++", 0, 0, 0}, {".M", "#Objective-C++", 0, 0, 0},
881 {".mii", "#Objective-C++", 0, 0, 0},
882 {".cc", "#C++", 0, 0, 0}, {".cxx", "#C++", 0, 0, 0},
883 {".cpp", "#C++", 0, 0, 0}, {".cp", "#C++", 0, 0, 0},
884 {".c++", "#C++", 0, 0, 0}, {".C", "#C++", 0, 0, 0},
885 {".CPP", "#C++", 0, 0, 0}, {".ii", "#C++", 0, 0, 0},
886 {".ads", "#Ada", 0, 0, 0}, {".adb", "#Ada", 0, 0, 0},
887 {".f", "#Fortran", 0, 0, 0}, {".F", "#Fortran", 0, 0, 0},
888 {".for", "#Fortran", 0, 0, 0}, {".FOR", "#Fortran", 0, 0, 0},
889 {".ftn", "#Fortran", 0, 0, 0}, {".FTN", "#Fortran", 0, 0, 0},
890 {".fpp", "#Fortran", 0, 0, 0}, {".FPP", "#Fortran", 0, 0, 0},
891 {".f90", "#Fortran", 0, 0, 0}, {".F90", "#Fortran", 0, 0, 0},
892 {".f95", "#Fortran", 0, 0, 0}, {".F95", "#Fortran", 0, 0, 0},
893 {".f03", "#Fortran", 0, 0, 0}, {".F03", "#Fortran", 0, 0, 0},
894 {".f08", "#Fortran", 0, 0, 0}, {".F08", "#Fortran", 0, 0, 0},
895 {".r", "#Ratfor", 0, 0, 0},
896 {".p", "#Pascal", 0, 0, 0}, {".pas", "#Pascal", 0, 0, 0},
897 {".java", "#Java", 0, 0, 0}, {".class", "#Java", 0, 0, 0},
898 {".zip", "#Java", 0, 0, 0}, {".jar", "#Java", 0, 0, 0},
899 /* Next come the entries for C. */
900 {".c", "@c", 0, 0, 1},
902 /* cc1 has an integrated ISO C preprocessor. We should invoke the
903 external preprocessor if -save-temps is given. */
904 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\
906 %{traditional|ftraditional:\
907 %eGNU C no longer supports -traditional without -E}\
908 %{save-temps*|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
909 %(cpp_options) -o %{save-temps*:%b.i} %{!save-temps*:%g.i} \n\
910 cc1 -fpreprocessed %{save-temps*:%b.i} %{!save-temps*:%g.i} \
912 %{!save-temps*:%{!traditional-cpp:%{!no-integrated-cpp:\
913 cc1 %(cpp_unique_options) %(cc1_options)}}}\
914 %{!fsyntax-only:%(invoke_as)}}}}", 0, 0, 1},
916 "%{!E:%e-E or -x required when input is from standard input}\
917 %(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)", 0, 0, 0},
918 {".h", "@c-header", 0, 0, 0},
920 /* cc1 has an integrated ISO C preprocessor. We should invoke the
921 external preprocessor if -save-temps is given. */
922 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\
924 %{save-temps*|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
925 %(cpp_options) -o %{save-temps*:%b.i} %{!save-temps*:%g.i} \n\
926 cc1 -fpreprocessed %{save-temps*:%b.i} %{!save-temps*:%g.i} \
928 %{!fdump-ada-spec*:-o %g.s %{!o*:--output-pch=%i.gch}\
929 %W{o*:--output-pch=%*}}%V}\
930 %{!save-temps*:%{!traditional-cpp:%{!no-integrated-cpp:\
931 cc1 %(cpp_unique_options) %(cc1_options)\
932 %{!fdump-ada-spec*:-o %g.s %{!o*:--output-pch=%i.gch}\
933 %W{o*:--output-pch=%*}}%V}}}}}}", 0, 0, 0},
934 {".i", "@cpp-output", 0, 0, 0},
936 "%{!M:%{!MM:%{!E:cc1 -fpreprocessed %i %(cc1_options) %{!fsyntax-only:%(invoke_as)}}}}", 0, 1, 0},
937 {".s", "@assembler", 0, 1, 0},
939 "%{!M:%{!MM:%{!E:%{!S:as %(asm_debug) %(asm_options) %i %A }}}}", 0, 1, 0},
940 {".sx", "@assembler-with-cpp", 0, 1, 0},
941 {".S", "@assembler-with-cpp", 0, 1, 0},
942 {"@assembler-with-cpp",
943 #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT
944 "%(trad_capable_cpp) -lang-asm %(cpp_options) -fno-directives-only\
945 %{E|M|MM:%(cpp_debug_options)}\
946 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\
947 as %(asm_debug) %(asm_options) %|.s %A }}}}"
949 "%(trad_capable_cpp) -lang-asm %(cpp_options) -fno-directives-only\
950 %{E|M|MM:%(cpp_debug_options)}\
951 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\
952 as %(asm_debug) %(asm_options) %m.s %A }}}}"
957 /* Mark end of table. */
961 /* Number of elements in default_compilers, not counting the terminator. */
963 static const int n_default_compilers = ARRAY_SIZE (default_compilers) - 1;
965 typedef char *char_p; /* For DEF_VEC_P. */
967 DEF_VEC_ALLOC_P(char_p,heap);
969 /* A vector of options to give to the linker.
970 These options are accumulated by %x,
971 and substituted into the linker command with %X. */
972 static VEC(char_p,heap) *linker_options;
974 /* A vector of options to give to the assembler.
975 These options are accumulated by -Wa,
976 and substituted into the assembler command with %Y. */
977 static VEC(char_p,heap) *assembler_options;
979 /* A vector of options to give to the preprocessor.
980 These options are accumulated by -Wp,
981 and substituted into the preprocessor command with %Z. */
982 static VEC(char_p,heap) *preprocessor_options;
985 skip_whitespace (char *p)
989 /* A fully-blank line is a delimiter in the SPEC file and shouldn't
990 be considered whitespace. */
991 if (p[0] == '\n' && p[1] == '\n' && p[2] == '\n')
993 else if (*p == '\n' || *p == ' ' || *p == '\t')
1007 /* Structures to keep track of prefixes to try when looking for files. */
1011 const char *prefix; /* String to prepend to the path. */
1012 struct prefix_list *next; /* Next in linked list. */
1013 int require_machine_suffix; /* Don't use without machine_suffix. */
1014 /* 2 means try both machine_suffix and just_machine_suffix. */
1015 int priority; /* Sort key - priority within list. */
1016 int os_multilib; /* 1 if OS multilib scheme should be used,
1017 0 for GCC multilib scheme. */
1022 struct prefix_list *plist; /* List of prefixes to try */
1023 int max_len; /* Max length of a prefix in PLIST */
1024 const char *name; /* Name of this list (used in config stuff) */
1027 /* List of prefixes to try when looking for executables. */
1029 static struct path_prefix exec_prefixes = { 0, 0, "exec" };
1031 /* List of prefixes to try when looking for startup (crt0) files. */
1033 static struct path_prefix startfile_prefixes = { 0, 0, "startfile" };
1035 /* List of prefixes to try when looking for include files. */
1037 static struct path_prefix include_prefixes = { 0, 0, "include" };
1039 /* Suffix to attach to directories searched for commands.
1040 This looks like `MACHINE/VERSION/'. */
1042 static const char *machine_suffix = 0;
1044 /* Suffix to attach to directories searched for commands.
1045 This is just `MACHINE/'. */
1047 static const char *just_machine_suffix = 0;
1049 /* Adjusted value of GCC_EXEC_PREFIX envvar. */
1051 static const char *gcc_exec_prefix;
1053 /* Adjusted value of standard_libexec_prefix. */
1055 static const char *gcc_libexec_prefix;
1057 /* Default prefixes to attach to command names. */
1059 #ifndef STANDARD_STARTFILE_PREFIX_1
1060 #define STANDARD_STARTFILE_PREFIX_1 "/lib/"
1062 #ifndef STANDARD_STARTFILE_PREFIX_2
1063 #define STANDARD_STARTFILE_PREFIX_2 "/usr/lib/"
1066 #ifdef CROSS_DIRECTORY_STRUCTURE /* Don't use these prefixes for a cross compiler. */
1067 #undef MD_EXEC_PREFIX
1068 #undef MD_STARTFILE_PREFIX
1069 #undef MD_STARTFILE_PREFIX_1
1072 /* If no prefixes defined, use the null string, which will disable them. */
1073 #ifndef MD_EXEC_PREFIX
1074 #define MD_EXEC_PREFIX ""
1076 #ifndef MD_STARTFILE_PREFIX
1077 #define MD_STARTFILE_PREFIX ""
1079 #ifndef MD_STARTFILE_PREFIX_1
1080 #define MD_STARTFILE_PREFIX_1 ""
1083 /* These directories are locations set at configure-time based on the
1084 --prefix option provided to configure. Their initializers are
1085 defined in Makefile.in. These paths are not *directly* used when
1086 gcc_exec_prefix is set because, in that case, we know where the
1087 compiler has been installed, and use paths relative to that
1088 location instead. */
1089 static const char *const standard_exec_prefix = STANDARD_EXEC_PREFIX;
1090 static const char *const standard_libexec_prefix = STANDARD_LIBEXEC_PREFIX;
1091 static const char *const standard_bindir_prefix = STANDARD_BINDIR_PREFIX;
1092 static const char *const standard_startfile_prefix = STANDARD_STARTFILE_PREFIX;
1094 /* For native compilers, these are well-known paths containing
1095 components that may be provided by the system. For cross
1096 compilers, these paths are not used. */
1097 static const char *md_exec_prefix = MD_EXEC_PREFIX;
1098 static const char *md_startfile_prefix = MD_STARTFILE_PREFIX;
1099 static const char *md_startfile_prefix_1 = MD_STARTFILE_PREFIX_1;
1100 static const char *const standard_startfile_prefix_1
1101 = STANDARD_STARTFILE_PREFIX_1;
1102 static const char *const standard_startfile_prefix_2
1103 = STANDARD_STARTFILE_PREFIX_2;
1105 /* A relative path to be used in finding the location of tools
1106 relative to the driver. */
1107 static const char *const tooldir_base_prefix = TOOLDIR_BASE_PREFIX;
1109 /* Subdirectory to use for locating libraries. Set by
1110 set_multilib_dir based on the compilation options. */
1112 static const char *multilib_dir;
1114 /* Subdirectory to use for locating libraries in OS conventions. Set by
1115 set_multilib_dir based on the compilation options. */
1117 static const char *multilib_os_dir;
1119 /* Structure to keep track of the specs that have been defined so far.
1120 These are accessed using %(specname) or %[specname] in a compiler
1125 /* The following 2 fields must be first */
1126 /* to allow EXTRA_SPECS to be initialized */
1127 const char *name; /* name of the spec. */
1128 const char *ptr; /* available ptr if no static pointer */
1130 /* The following fields are not initialized */
1131 /* by EXTRA_SPECS */
1132 const char **ptr_spec; /* pointer to the spec itself. */
1133 struct spec_list *next; /* Next spec in linked list. */
1134 int name_len; /* length of the name */
1135 int alloc_p; /* whether string was allocated */
1138 #define INIT_STATIC_SPEC(NAME,PTR) \
1139 { NAME, NULL, PTR, (struct spec_list *) 0, sizeof (NAME) - 1, 0 }
1141 /* List of statically defined specs. */
1142 static struct spec_list static_specs[] =
1144 INIT_STATIC_SPEC ("asm", &asm_spec),
1145 INIT_STATIC_SPEC ("asm_debug", &asm_debug),
1146 INIT_STATIC_SPEC ("asm_final", &asm_final_spec),
1147 INIT_STATIC_SPEC ("asm_options", &asm_options),
1148 INIT_STATIC_SPEC ("invoke_as", &invoke_as),
1149 INIT_STATIC_SPEC ("cpp", &cpp_spec),
1150 INIT_STATIC_SPEC ("cpp_options", &cpp_options),
1151 INIT_STATIC_SPEC ("cpp_debug_options", &cpp_debug_options),
1152 INIT_STATIC_SPEC ("cpp_unique_options", &cpp_unique_options),
1153 INIT_STATIC_SPEC ("trad_capable_cpp", &trad_capable_cpp),
1154 INIT_STATIC_SPEC ("cc1", &cc1_spec),
1155 INIT_STATIC_SPEC ("cc1_options", &cc1_options),
1156 INIT_STATIC_SPEC ("cc1plus", &cc1plus_spec),
1157 INIT_STATIC_SPEC ("link_gcc_c_sequence", &link_gcc_c_sequence_spec),
1158 INIT_STATIC_SPEC ("link_ssp", &link_ssp_spec),
1159 INIT_STATIC_SPEC ("endfile", &endfile_spec),
1160 INIT_STATIC_SPEC ("link", &link_spec),
1161 INIT_STATIC_SPEC ("lib", &lib_spec),
1162 INIT_STATIC_SPEC ("mfwrap", &mfwrap_spec),
1163 INIT_STATIC_SPEC ("mflib", &mflib_spec),
1164 INIT_STATIC_SPEC ("link_gomp", &link_gomp_spec),
1165 INIT_STATIC_SPEC ("libgcc", &libgcc_spec),
1166 INIT_STATIC_SPEC ("startfile", &startfile_spec),
1167 INIT_STATIC_SPEC ("cross_compile", &cross_compile),
1168 INIT_STATIC_SPEC ("version", &compiler_version),
1169 INIT_STATIC_SPEC ("multilib", &multilib_select),
1170 INIT_STATIC_SPEC ("multilib_defaults", &multilib_defaults),
1171 INIT_STATIC_SPEC ("multilib_extra", &multilib_extra),
1172 INIT_STATIC_SPEC ("multilib_matches", &multilib_matches),
1173 INIT_STATIC_SPEC ("multilib_exclusions", &multilib_exclusions),
1174 INIT_STATIC_SPEC ("multilib_options", &multilib_options),
1175 INIT_STATIC_SPEC ("linker", &linker_name_spec),
1176 INIT_STATIC_SPEC ("linker_plugin_file", &linker_plugin_file_spec),
1177 INIT_STATIC_SPEC ("lto_wrapper", <o_wrapper_spec),
1178 INIT_STATIC_SPEC ("lto_gcc", <o_gcc_spec),
1179 INIT_STATIC_SPEC ("link_libgcc", &link_libgcc_spec),
1180 INIT_STATIC_SPEC ("md_exec_prefix", &md_exec_prefix),
1181 INIT_STATIC_SPEC ("md_startfile_prefix", &md_startfile_prefix),
1182 INIT_STATIC_SPEC ("md_startfile_prefix_1", &md_startfile_prefix_1),
1183 INIT_STATIC_SPEC ("startfile_prefix_spec", &startfile_prefix_spec),
1184 INIT_STATIC_SPEC ("sysroot_spec", &sysroot_spec),
1185 INIT_STATIC_SPEC ("sysroot_suffix_spec", &sysroot_suffix_spec),
1186 INIT_STATIC_SPEC ("sysroot_hdrs_suffix_spec", &sysroot_hdrs_suffix_spec),
1189 #ifdef EXTRA_SPECS /* additional specs needed */
1190 /* Structure to keep track of just the first two args of a spec_list.
1191 That is all that the EXTRA_SPECS macro gives us. */
1194 const char *const name;
1195 const char *const ptr;
1198 static const struct spec_list_1 extra_specs_1[] = { EXTRA_SPECS };
1199 static struct spec_list *extra_specs = (struct spec_list *) 0;
1202 /* List of dynamically allocates specs that have been defined so far. */
1204 static struct spec_list *specs = (struct spec_list *) 0;
1206 /* List of static spec functions. */
1208 static const struct spec_function static_spec_functions[] =
1210 { "getenv", getenv_spec_function },
1211 { "if-exists", if_exists_spec_function },
1212 { "if-exists-else", if_exists_else_spec_function },
1213 { "replace-outfile", replace_outfile_spec_function },
1214 { "remove-outfile", remove_outfile_spec_function },
1215 { "version-compare", version_compare_spec_function },
1216 { "include", include_spec_function },
1217 { "find-file", find_file_spec_function },
1218 { "find-plugindir", find_plugindir_spec_function },
1219 { "print-asm-header", print_asm_header_spec_function },
1220 { "compare-debug-dump-opt", compare_debug_dump_opt_spec_function },
1221 { "compare-debug-self-opt", compare_debug_self_opt_spec_function },
1222 { "compare-debug-auxbase-opt", compare_debug_auxbase_opt_spec_function },
1223 { "pass-through-libs", pass_through_libs_spec_func },
1224 #ifdef EXTRA_SPEC_FUNCTIONS
1225 EXTRA_SPEC_FUNCTIONS
1230 static int processing_spec_function;
1232 /* Add appropriate libgcc specs to OBSTACK, taking into account
1233 various permutations of -shared-libgcc, -shared, and such. */
1235 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
1237 #ifndef USE_LD_AS_NEEDED
1238 #define USE_LD_AS_NEEDED 0
1242 init_gcc_specs (struct obstack *obstack, const char *shared_name,
1243 const char *static_name, const char *eh_name)
1247 buf = concat ("%{static|static-libgcc:", static_name, " ", eh_name, "}"
1248 "%{!static:%{!static-libgcc:"
1249 #if USE_LD_AS_NEEDED
1250 "%{!shared-libgcc:",
1251 static_name, " --as-needed ", shared_name, " --no-as-needed"
1254 shared_name, "%{!shared: ", static_name, "}"
1258 "%{!shared-libgcc:", static_name, " ", eh_name, "}"
1259 "%{shared-libgcc:", shared_name, " ", static_name, "}"
1263 "%{shared-libgcc:", shared_name, "}"
1264 "%{!shared-libgcc:", static_name, "}"
1267 "%{shared:", shared_name, "}"
1272 obstack_grow (obstack, buf, strlen (buf));
1275 #endif /* ENABLE_SHARED_LIBGCC */
1277 /* Initialize the specs lookup routines. */
1282 struct spec_list *next = (struct spec_list *) 0;
1283 struct spec_list *sl = (struct spec_list *) 0;
1287 return; /* Already initialized. */
1290 fnotice (stderr, "Using built-in specs.\n");
1293 extra_specs = XCNEWVEC (struct spec_list, ARRAY_SIZE (extra_specs_1));
1295 for (i = ARRAY_SIZE (extra_specs_1) - 1; i >= 0; i--)
1297 sl = &extra_specs[i];
1298 sl->name = extra_specs_1[i].name;
1299 sl->ptr = extra_specs_1[i].ptr;
1301 sl->name_len = strlen (sl->name);
1302 sl->ptr_spec = &sl->ptr;
1307 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--)
1309 sl = &static_specs[i];
1314 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
1315 /* ??? If neither -shared-libgcc nor --static-libgcc was
1316 seen, then we should be making an educated guess. Some proposed
1317 heuristics for ELF include:
1319 (1) If "-Wl,--export-dynamic", then it's a fair bet that the
1320 program will be doing dynamic loading, which will likely
1321 need the shared libgcc.
1323 (2) If "-ldl", then it's also a fair bet that we're doing
1326 (3) For each ET_DYN we're linking against (either through -lfoo
1327 or /some/path/foo.so), check to see whether it or one of
1328 its dependencies depends on a shared libgcc.
1332 If the runtime is fixed to look for program headers instead
1333 of calling __register_frame_info at all, for each object,
1334 use the shared libgcc if any EH symbol referenced.
1336 If crtstuff is fixed to not invoke __register_frame_info
1337 automatically, for each object, use the shared libgcc if
1338 any non-empty unwind section found.
1340 Doing any of this probably requires invoking an external program to
1341 do the actual object file scanning. */
1343 const char *p = libgcc_spec;
1346 /* Transform the extant libgcc_spec into one that uses the shared libgcc
1347 when given the proper command line arguments. */
1350 if (in_sep && *p == '-' && strncmp (p, "-lgcc", 5) == 0)
1352 init_gcc_specs (&obstack,
1354 #ifdef USE_LIBUNWIND_EXCEPTIONS
1360 #ifdef USE_LIBUNWIND_EXCEPTIONS
1361 # ifdef HAVE_LD_STATIC_DYNAMIC
1362 " %{!static:-Bstatic} -lunwind %{!static:-Bdynamic}"
1372 else if (in_sep && *p == 'l' && strncmp (p, "libgcc.a%s", 10) == 0)
1374 /* Ug. We don't know shared library extensions. Hope that
1375 systems that use this form don't do shared libraries. */
1376 init_gcc_specs (&obstack,
1380 #ifdef USE_LIBUNWIND_EXCEPTIONS
1389 obstack_1grow (&obstack, *p);
1390 in_sep = (*p == ' ');
1395 obstack_1grow (&obstack, '\0');
1396 libgcc_spec = XOBFINISH (&obstack, const char *);
1399 #ifdef USE_AS_TRADITIONAL_FORMAT
1400 /* Prepend "--traditional-format" to whatever asm_spec we had before. */
1402 static const char tf[] = "--traditional-format ";
1403 obstack_grow (&obstack, tf, sizeof(tf) - 1);
1404 obstack_grow0 (&obstack, asm_spec, strlen (asm_spec));
1405 asm_spec = XOBFINISH (&obstack, const char *);
1409 #if defined LINK_EH_SPEC || defined LINK_BUILDID_SPEC
1410 # ifdef LINK_BUILDID_SPEC
1411 /* Prepend LINK_BUILDID_SPEC to whatever link_spec we had before. */
1412 obstack_grow (&obstack, LINK_BUILDID_SPEC, sizeof(LINK_BUILDID_SPEC) - 1);
1414 # ifdef LINK_EH_SPEC
1415 /* Prepend LINK_EH_SPEC to whatever link_spec we had before. */
1416 obstack_grow (&obstack, LINK_EH_SPEC, sizeof(LINK_EH_SPEC) - 1);
1418 obstack_grow0 (&obstack, link_spec, strlen (link_spec));
1419 link_spec = XOBFINISH (&obstack, const char *);
1425 /* Change the value of spec NAME to SPEC. If SPEC is empty, then the spec is
1426 removed; If the spec starts with a + then SPEC is added to the end of the
1430 set_spec (const char *name, const char *spec)
1432 struct spec_list *sl;
1433 const char *old_spec;
1434 int name_len = strlen (name);
1437 /* If this is the first call, initialize the statically allocated specs. */
1440 struct spec_list *next = (struct spec_list *) 0;
1441 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--)
1443 sl = &static_specs[i];
1450 /* See if the spec already exists. */
1451 for (sl = specs; sl; sl = sl->next)
1452 if (name_len == sl->name_len && !strcmp (sl->name, name))
1457 /* Not found - make it. */
1458 sl = XNEW (struct spec_list);
1459 sl->name = xstrdup (name);
1460 sl->name_len = name_len;
1461 sl->ptr_spec = &sl->ptr;
1463 *(sl->ptr_spec) = "";
1468 old_spec = *(sl->ptr_spec);
1469 *(sl->ptr_spec) = ((spec[0] == '+' && ISSPACE ((unsigned char)spec[1]))
1470 ? concat (old_spec, spec + 1, NULL)
1475 fnotice (stderr, "Setting spec %s to '%s'\n\n", name, *(sl->ptr_spec));
1478 /* Free the old spec. */
1479 if (old_spec && sl->alloc_p)
1480 free (CONST_CAST(char *, old_spec));
1485 /* Accumulate a command (program name and args), and run it. */
1487 typedef const char *const_char_p; /* For DEF_VEC_P. */
1488 DEF_VEC_P(const_char_p);
1489 DEF_VEC_ALLOC_P(const_char_p,heap);
1491 /* Vector of pointers to arguments in the current line of specifications. */
1493 static VEC(const_char_p,heap) *argbuf;
1495 /* Position in the argbuf vector containing the name of the output file
1496 (the value associated with the "-o" flag). */
1498 static int have_o_argbuf_index = 0;
1500 /* Were the options -c, -S or -E passed. */
1501 static int have_c = 0;
1503 /* Was the option -o passed. */
1504 static int have_o = 0;
1506 /* This is the list of suffixes and codes (%g/%u/%U/%j) and the associated
1507 temp file. If the HOST_BIT_BUCKET is used for %j, no entry is made for
1510 static struct temp_name {
1511 const char *suffix; /* suffix associated with the code. */
1512 int length; /* strlen (suffix). */
1513 int unique; /* Indicates whether %g or %u/%U was used. */
1514 const char *filename; /* associated filename. */
1515 int filename_length; /* strlen (filename). */
1516 struct temp_name *next;
1519 /* Number of commands executed so far. */
1521 static int execution_count;
1523 /* Number of commands that exited with a signal. */
1525 static int signal_count;
1527 /* Allocate the argument vector. */
1532 argbuf = VEC_alloc (const_char_p, heap, 10);
1535 /* Clear out the vector of arguments (after a command is executed). */
1540 VEC_truncate (const_char_p, argbuf, 0);
1543 /* Add one argument to the vector at the end.
1544 This is done when a space is seen or at the end of the line.
1545 If DELETE_ALWAYS is nonzero, the arg is a filename
1546 and the file should be deleted eventually.
1547 If DELETE_FAILURE is nonzero, the arg is a filename
1548 and the file should be deleted if this compilation fails. */
1551 store_arg (const char *arg, int delete_always, int delete_failure)
1553 VEC_safe_push (const_char_p, heap, argbuf, arg);
1555 if (strcmp (arg, "-o") == 0)
1556 have_o_argbuf_index = VEC_length (const_char_p, argbuf);
1557 if (delete_always || delete_failure)
1560 /* If the temporary file we should delete is specified as
1561 part of a joined argument extract the filename. */
1563 && (p = strrchr (arg, '=')))
1565 record_temp_file (arg, delete_always, delete_failure);
1569 /* Load specs from a file name named FILENAME, replacing occurrences of
1570 various different types of line-endings, \r\n, \n\r and just \r, with
1574 load_specs (const char *filename)
1578 struct stat statbuf;
1585 fnotice (stderr, "Reading specs from %s\n", filename);
1587 /* Open and stat the file. */
1588 desc = open (filename, O_RDONLY, 0);
1590 pfatal_with_name (filename);
1591 if (stat (filename, &statbuf) < 0)
1592 pfatal_with_name (filename);
1594 /* Read contents of file into BUFFER. */
1595 buffer = XNEWVEC (char, statbuf.st_size + 1);
1596 readlen = read (desc, buffer, (unsigned) statbuf.st_size);
1598 pfatal_with_name (filename);
1599 buffer[readlen] = 0;
1602 specs = XNEWVEC (char, readlen + 1);
1604 for (buffer_p = buffer; buffer_p && *buffer_p; buffer_p++)
1610 if (buffer_p > buffer && *(buffer_p - 1) == '\n') /* \n\r */
1612 else if (*(buffer_p + 1) == '\n') /* \r\n */
1626 /* Read compilation specs from a file named FILENAME,
1627 replacing the default ones.
1629 A suffix which starts with `*' is a definition for
1630 one of the machine-specific sub-specs. The "suffix" should be
1631 *asm, *cc1, *cpp, *link, *startfile, etc.
1632 The corresponding spec is stored in asm_spec, etc.,
1633 rather than in the `compilers' vector.
1635 Anything invalid in the file is a fatal error. */
1638 read_specs (const char *filename, int main_p)
1643 buffer = load_specs (filename);
1645 /* Scan BUFFER for specs, putting them in the vector. */
1651 char *in, *out, *p1, *p2, *p3;
1653 /* Advance P in BUFFER to the next nonblank nocomment line. */
1654 p = skip_whitespace (p);
1658 /* Is this a special command that starts with '%'? */
1659 /* Don't allow this for the main specs file, since it would
1660 encourage people to overwrite it. */
1661 if (*p == '%' && !main_p)
1664 while (*p && *p != '\n')
1670 if (!strncmp (p1, "%include", sizeof ("%include") - 1)
1671 && (p1[sizeof "%include" - 1] == ' '
1672 || p1[sizeof "%include" - 1] == '\t'))
1676 p1 += sizeof ("%include");
1677 while (*p1 == ' ' || *p1 == '\t')
1680 if (*p1++ != '<' || p[-2] != '>')
1681 fatal_error ("specs %%include syntax malformed after "
1683 (long) (p1 - buffer + 1));
1686 new_filename = find_a_file (&startfile_prefixes, p1, R_OK, true);
1687 read_specs (new_filename ? new_filename : p1, FALSE);
1690 else if (!strncmp (p1, "%include_noerr", sizeof "%include_noerr" - 1)
1691 && (p1[sizeof "%include_noerr" - 1] == ' '
1692 || p1[sizeof "%include_noerr" - 1] == '\t'))
1696 p1 += sizeof "%include_noerr";
1697 while (*p1 == ' ' || *p1 == '\t')
1700 if (*p1++ != '<' || p[-2] != '>')
1701 fatal_error ("specs %%include syntax malformed after "
1703 (long) (p1 - buffer + 1));
1706 new_filename = find_a_file (&startfile_prefixes, p1, R_OK, true);
1708 read_specs (new_filename, FALSE);
1709 else if (verbose_flag)
1710 fnotice (stderr, "could not find specs file %s\n", p1);
1713 else if (!strncmp (p1, "%rename", sizeof "%rename" - 1)
1714 && (p1[sizeof "%rename" - 1] == ' '
1715 || p1[sizeof "%rename" - 1] == '\t'))
1718 struct spec_list *sl;
1719 struct spec_list *newsl;
1721 /* Get original name. */
1722 p1 += sizeof "%rename";
1723 while (*p1 == ' ' || *p1 == '\t')
1726 if (! ISALPHA ((unsigned char) *p1))
1727 fatal_error ("specs %%rename syntax malformed after "
1729 (long) (p1 - buffer));
1732 while (*p2 && !ISSPACE ((unsigned char) *p2))
1735 if (*p2 != ' ' && *p2 != '\t')
1736 fatal_error ("specs %%rename syntax malformed after "
1738 (long) (p2 - buffer));
1742 while (*p2 == ' ' || *p2 == '\t')
1745 if (! ISALPHA ((unsigned char) *p2))
1746 fatal_error ("specs %%rename syntax malformed after "
1748 (long) (p2 - buffer));
1750 /* Get new spec name. */
1752 while (*p3 && !ISSPACE ((unsigned char) *p3))
1756 fatal_error ("specs %%rename syntax malformed after "
1758 (long) (p3 - buffer));
1761 for (sl = specs; sl; sl = sl->next)
1762 if (name_len == sl->name_len && !strcmp (sl->name, p1))
1766 fatal_error ("specs %s spec was not found to be renamed", p1);
1768 if (strcmp (p1, p2) == 0)
1771 for (newsl = specs; newsl; newsl = newsl->next)
1772 if (strcmp (newsl->name, p2) == 0)
1773 fatal_error ("%s: attempt to rename spec %qs to "
1774 "already defined spec %qs",
1779 fnotice (stderr, "rename spec %s to %s\n", p1, p2);
1781 fnotice (stderr, "spec is '%s'\n\n", *(sl->ptr_spec));
1785 set_spec (p2, *(sl->ptr_spec));
1787 free (CONST_CAST (char *, *(sl->ptr_spec)));
1789 *(sl->ptr_spec) = "";
1794 fatal_error ("specs unknown %% command after %ld characters",
1795 (long) (p1 - buffer));
1798 /* Find the colon that should end the suffix. */
1800 while (*p1 && *p1 != ':' && *p1 != '\n')
1803 /* The colon shouldn't be missing. */
1805 fatal_error ("specs file malformed after %ld characters",
1806 (long) (p1 - buffer));
1808 /* Skip back over trailing whitespace. */
1810 while (p2 > buffer && (p2[-1] == ' ' || p2[-1] == '\t'))
1813 /* Copy the suffix to a string. */
1814 suffix = save_string (p, p2 - p);
1815 /* Find the next line. */
1816 p = skip_whitespace (p1 + 1);
1818 fatal_error ("specs file malformed after %ld characters",
1819 (long) (p - buffer));
1822 /* Find next blank line or end of string. */
1823 while (*p1 && !(*p1 == '\n' && (p1[1] == '\n' || p1[1] == '\0')))
1826 /* Specs end at the blank line and do not include the newline. */
1827 spec = save_string (p, p1 - p);
1830 /* Delete backslash-newline sequences from the spec. */
1835 if (in[0] == '\\' && in[1] == '\n')
1837 else if (in[0] == '#')
1838 while (*in && *in != '\n')
1846 if (suffix[0] == '*')
1848 if (! strcmp (suffix, "*link_command"))
1849 link_command_spec = spec;
1851 set_spec (suffix + 1, spec);
1855 /* Add this pair to the vector. */
1857 = XRESIZEVEC (struct compiler, compilers, n_compilers + 2);
1859 compilers[n_compilers].suffix = suffix;
1860 compilers[n_compilers].spec = spec;
1862 memset (&compilers[n_compilers], 0, sizeof compilers[n_compilers]);
1866 link_command_spec = spec;
1869 if (link_command_spec == 0)
1870 fatal_error ("spec file has no spec for linking");
1873 /* Record the names of temporary files we tell compilers to write,
1874 and delete them at the end of the run. */
1876 /* This is the common prefix we use to make temp file names.
1877 It is chosen once for each run of this program.
1878 It is substituted into a spec by %g or %j.
1879 Thus, all temp file names contain this prefix.
1880 In practice, all temp file names start with this prefix.
1882 This prefix comes from the envvar TMPDIR if it is defined;
1883 otherwise, from the P_tmpdir macro if that is defined;
1884 otherwise, in /usr/tmp or /tmp;
1885 or finally the current directory if all else fails. */
1887 static const char *temp_filename;
1889 /* Length of the prefix. */
1891 static int temp_filename_length;
1893 /* Define the list of temporary files to delete. */
1898 struct temp_file *next;
1901 /* Queue of files to delete on success or failure of compilation. */
1902 static struct temp_file *always_delete_queue;
1903 /* Queue of files to delete on failure of compilation. */
1904 static struct temp_file *failure_delete_queue;
1906 /* Record FILENAME as a file to be deleted automatically.
1907 ALWAYS_DELETE nonzero means delete it if all compilation succeeds;
1908 otherwise delete it in any case.
1909 FAIL_DELETE nonzero means delete it if a compilation step fails;
1910 otherwise delete it in any case. */
1913 record_temp_file (const char *filename, int always_delete, int fail_delete)
1915 char *const name = xstrdup (filename);
1919 struct temp_file *temp;
1920 for (temp = always_delete_queue; temp; temp = temp->next)
1921 if (! strcmp (name, temp->name))
1924 temp = XNEW (struct temp_file);
1925 temp->next = always_delete_queue;
1927 always_delete_queue = temp;
1934 struct temp_file *temp;
1935 for (temp = failure_delete_queue; temp; temp = temp->next)
1936 if (! strcmp (name, temp->name))
1939 temp = XNEW (struct temp_file);
1940 temp->next = failure_delete_queue;
1942 failure_delete_queue = temp;
1948 /* Delete all the temporary files whose names we previously recorded. */
1950 #ifndef DELETE_IF_ORDINARY
1951 #define DELETE_IF_ORDINARY(NAME,ST,VERBOSE_FLAG) \
1954 if (stat (NAME, &ST) >= 0 && S_ISREG (ST.st_mode)) \
1955 if (unlink (NAME) < 0) \
1957 perror_with_name (NAME); \
1962 delete_if_ordinary (const char *name)
1968 printf ("Delete %s? (y or n) ", name);
1972 while ((c = getchar ()) != '\n' && c != EOF)
1975 if (i == 'y' || i == 'Y')
1977 DELETE_IF_ORDINARY (name, st, verbose_flag);
1981 delete_temp_files (void)
1983 struct temp_file *temp;
1985 for (temp = always_delete_queue; temp; temp = temp->next)
1986 delete_if_ordinary (temp->name);
1987 always_delete_queue = 0;
1990 /* Delete all the files to be deleted on error. */
1993 delete_failure_queue (void)
1995 struct temp_file *temp;
1997 for (temp = failure_delete_queue; temp; temp = temp->next)
1998 delete_if_ordinary (temp->name);
2002 clear_failure_queue (void)
2004 failure_delete_queue = 0;
2007 /* Call CALLBACK for each path in PATHS, breaking out early if CALLBACK
2009 If DO_MULTI is true iterate over the paths twice, first with multilib
2010 suffix then without, otherwise iterate over the paths once without
2011 adding a multilib suffix. When DO_MULTI is true, some attempt is made
2012 to avoid visiting the same path twice, but we could do better. For
2013 instance, /usr/lib/../lib is considered different from /usr/lib.
2014 At least EXTRA_SPACE chars past the end of the path passed to
2015 CALLBACK are available for use by the callback.
2016 CALLBACK_INFO allows extra parameters to be passed to CALLBACK.
2018 Returns the value returned by CALLBACK. */
2021 for_each_path (const struct path_prefix *paths,
2024 void *(*callback) (char *, void *),
2025 void *callback_info)
2027 struct prefix_list *pl;
2028 const char *multi_dir = NULL;
2029 const char *multi_os_dir = NULL;
2030 const char *multi_suffix;
2031 const char *just_multi_suffix;
2034 bool skip_multi_dir = false;
2035 bool skip_multi_os_dir = false;
2037 multi_suffix = machine_suffix;
2038 just_multi_suffix = just_machine_suffix;
2039 if (do_multi && multilib_dir && strcmp (multilib_dir, ".") != 0)
2041 multi_dir = concat (multilib_dir, dir_separator_str, NULL);
2042 multi_suffix = concat (multi_suffix, multi_dir, NULL);
2043 just_multi_suffix = concat (just_multi_suffix, multi_dir, NULL);
2045 if (do_multi && multilib_os_dir && strcmp (multilib_os_dir, ".") != 0)
2046 multi_os_dir = concat (multilib_os_dir, dir_separator_str, NULL);
2050 size_t multi_dir_len = 0;
2051 size_t multi_os_dir_len = 0;
2053 size_t just_suffix_len;
2057 multi_dir_len = strlen (multi_dir);
2059 multi_os_dir_len = strlen (multi_os_dir);
2060 suffix_len = strlen (multi_suffix);
2061 just_suffix_len = strlen (just_multi_suffix);
2065 len = paths->max_len + extra_space + 1;
2066 if (suffix_len > multi_os_dir_len)
2069 len += multi_os_dir_len;
2070 path = XNEWVEC (char, len);
2073 for (pl = paths->plist; pl != 0; pl = pl->next)
2075 len = strlen (pl->prefix);
2076 memcpy (path, pl->prefix, len);
2078 /* Look first in MACHINE/VERSION subdirectory. */
2079 if (!skip_multi_dir)
2081 memcpy (path + len, multi_suffix, suffix_len + 1);
2082 ret = callback (path, callback_info);
2087 /* Some paths are tried with just the machine (ie. target)
2088 subdir. This is used for finding as, ld, etc. */
2090 && pl->require_machine_suffix == 2)
2092 memcpy (path + len, just_multi_suffix, just_suffix_len + 1);
2093 ret = callback (path, callback_info);
2098 /* Now try the base path. */
2099 if (!pl->require_machine_suffix
2100 && !(pl->os_multilib ? skip_multi_os_dir : skip_multi_dir))
2102 const char *this_multi;
2103 size_t this_multi_len;
2105 if (pl->os_multilib)
2107 this_multi = multi_os_dir;
2108 this_multi_len = multi_os_dir_len;
2112 this_multi = multi_dir;
2113 this_multi_len = multi_dir_len;
2117 memcpy (path + len, this_multi, this_multi_len + 1);
2121 ret = callback (path, callback_info);
2129 if (multi_dir == NULL && multi_os_dir == NULL)
2132 /* Run through the paths again, this time without multilibs.
2133 Don't repeat any we have already seen. */
2136 free (CONST_CAST (char *, multi_dir));
2138 free (CONST_CAST (char *, multi_suffix));
2139 multi_suffix = machine_suffix;
2140 free (CONST_CAST (char *, just_multi_suffix));
2141 just_multi_suffix = just_machine_suffix;
2144 skip_multi_dir = true;
2147 free (CONST_CAST (char *, multi_os_dir));
2148 multi_os_dir = NULL;
2151 skip_multi_os_dir = true;
2156 free (CONST_CAST (char *, multi_dir));
2157 free (CONST_CAST (char *, multi_suffix));
2158 free (CONST_CAST (char *, just_multi_suffix));
2161 free (CONST_CAST (char *, multi_os_dir));
2167 /* Callback for build_search_list. Adds path to obstack being built. */
2169 struct add_to_obstack_info {
2176 add_to_obstack (char *path, void *data)
2178 struct add_to_obstack_info *info = (struct add_to_obstack_info *) data;
2180 if (info->check_dir && !is_directory (path, false))
2183 if (!info->first_time)
2184 obstack_1grow (info->ob, PATH_SEPARATOR);
2186 obstack_grow (info->ob, path, strlen (path));
2188 info->first_time = false;
2192 /* Add or change the value of an environment variable, outputting the
2193 change to standard error if in verbose mode. */
2195 xputenv (const char *string)
2198 fnotice (stderr, "%s\n", string);
2199 putenv (CONST_CAST (char *, string));
2202 /* Build a list of search directories from PATHS.
2203 PREFIX is a string to prepend to the list.
2204 If CHECK_DIR_P is true we ensure the directory exists.
2205 If DO_MULTI is true, multilib paths are output first, then
2207 This is used mostly by putenv_from_prefixes so we use `collect_obstack'.
2208 It is also used by the --print-search-dirs flag. */
2211 build_search_list (const struct path_prefix *paths, const char *prefix,
2212 bool check_dir, bool do_multi)
2214 struct add_to_obstack_info info;
2216 info.ob = &collect_obstack;
2217 info.check_dir = check_dir;
2218 info.first_time = true;
2220 obstack_grow (&collect_obstack, prefix, strlen (prefix));
2221 obstack_1grow (&collect_obstack, '=');
2223 for_each_path (paths, do_multi, 0, add_to_obstack, &info);
2225 obstack_1grow (&collect_obstack, '\0');
2226 return XOBFINISH (&collect_obstack, char *);
2229 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
2233 putenv_from_prefixes (const struct path_prefix *paths, const char *env_var,
2236 xputenv (build_search_list (paths, env_var, true, do_multi));
2239 /* Check whether NAME can be accessed in MODE. This is like access,
2240 except that it never considers directories to be executable. */
2243 access_check (const char *name, int mode)
2249 if (stat (name, &st) < 0
2250 || S_ISDIR (st.st_mode))
2254 return access (name, mode);
2257 /* Callback for find_a_file. Appends the file name to the directory
2258 path. If the resulting file exists in the right mode, return the
2259 full pathname to the file. */
2261 struct file_at_path_info {
2270 file_at_path (char *path, void *data)
2272 struct file_at_path_info *info = (struct file_at_path_info *) data;
2273 size_t len = strlen (path);
2275 memcpy (path + len, info->name, info->name_len);
2276 len += info->name_len;
2278 /* Some systems have a suffix for executable files.
2279 So try appending that first. */
2280 if (info->suffix_len)
2282 memcpy (path + len, info->suffix, info->suffix_len + 1);
2283 if (access_check (path, info->mode) == 0)
2288 if (access_check (path, info->mode) == 0)
2294 /* Search for NAME using the prefix list PREFIXES. MODE is passed to
2295 access to check permissions. If DO_MULTI is true, search multilib
2296 paths then non-multilib paths, otherwise do not search multilib paths.
2297 Return 0 if not found, otherwise return its name, allocated with malloc. */
2300 find_a_file (const struct path_prefix *pprefix, const char *name, int mode,
2303 struct file_at_path_info info;
2305 #ifdef DEFAULT_ASSEMBLER
2306 if (! strcmp (name, "as") && access (DEFAULT_ASSEMBLER, mode) == 0)
2307 return xstrdup (DEFAULT_ASSEMBLER);
2310 #ifdef DEFAULT_LINKER
2311 if (! strcmp(name, "ld") && access (DEFAULT_LINKER, mode) == 0)
2312 return xstrdup (DEFAULT_LINKER);
2315 /* Determine the filename to execute (special case for absolute paths). */
2317 if (IS_ABSOLUTE_PATH (name))
2319 if (access (name, mode) == 0)
2320 return xstrdup (name);
2326 info.suffix = (mode & X_OK) != 0 ? HOST_EXECUTABLE_SUFFIX : "";
2327 info.name_len = strlen (info.name);
2328 info.suffix_len = strlen (info.suffix);
2331 return (char*) for_each_path (pprefix, do_multi,
2332 info.name_len + info.suffix_len,
2333 file_at_path, &info);
2336 /* Ranking of prefixes in the sort list. -B prefixes are put before
2339 enum path_prefix_priority
2341 PREFIX_PRIORITY_B_OPT,
2342 PREFIX_PRIORITY_LAST
2345 /* Add an entry for PREFIX in PLIST. The PLIST is kept in ascending
2346 order according to PRIORITY. Within each PRIORITY, new entries are
2349 If WARN is nonzero, we will warn if no file is found
2350 through this prefix. WARN should point to an int
2351 which will be set to 1 if this entry is used.
2353 COMPONENT is the value to be passed to update_path.
2355 REQUIRE_MACHINE_SUFFIX is 1 if this prefix can't be used without
2356 the complete value of machine_suffix.
2357 2 means try both machine_suffix and just_machine_suffix. */
2360 add_prefix (struct path_prefix *pprefix, const char *prefix,
2361 const char *component, /* enum prefix_priority */ int priority,
2362 int require_machine_suffix, int os_multilib)
2364 struct prefix_list *pl, **prev;
2367 for (prev = &pprefix->plist;
2368 (*prev) != NULL && (*prev)->priority <= priority;
2369 prev = &(*prev)->next)
2372 /* Keep track of the longest prefix. */
2374 prefix = update_path (prefix, component);
2375 len = strlen (prefix);
2376 if (len > pprefix->max_len)
2377 pprefix->max_len = len;
2379 pl = XNEW (struct prefix_list);
2380 pl->prefix = prefix;
2381 pl->require_machine_suffix = require_machine_suffix;
2382 pl->priority = priority;
2383 pl->os_multilib = os_multilib;
2385 /* Insert after PREV. */
2390 /* Same as add_prefix, but prepending target_system_root to prefix. */
2391 /* The target_system_root prefix has been relocated by gcc_exec_prefix. */
2393 add_sysrooted_prefix (struct path_prefix *pprefix, const char *prefix,
2394 const char *component,
2395 /* enum prefix_priority */ int priority,
2396 int require_machine_suffix, int os_multilib)
2398 if (!IS_ABSOLUTE_PATH (prefix))
2399 fatal_error ("system path %qs is not absolute", prefix);
2401 if (target_system_root)
2403 if (target_sysroot_suffix)
2404 prefix = concat (target_sysroot_suffix, prefix, NULL);
2405 prefix = concat (target_system_root, prefix, NULL);
2407 /* We have to override this because GCC's notion of sysroot
2408 moves along with GCC. */
2412 add_prefix (pprefix, prefix, component, priority,
2413 require_machine_suffix, os_multilib);
2416 /* Execute the command specified by the arguments on the current line of spec.
2417 When using pipes, this includes several piped-together commands
2418 with `|' between them.
2420 Return 0 if successful, -1 if failed. */
2426 int n_commands; /* # of command. */
2428 struct pex_obj *pex;
2431 const char *prog; /* program name. */
2432 const char **argv; /* vector of args. */
2436 struct command *commands; /* each command buffer with above info. */
2438 gcc_assert (!processing_spec_function);
2442 string = find_a_file (&exec_prefixes,
2443 VEC_index (const_char_p, argbuf, 0), X_OK, false);
2445 VEC_replace (const_char_p, argbuf, 0, string);
2446 insert_wrapper (wrapper_string);
2449 /* Count # of piped commands. */
2450 for (n_commands = 1, i = 0; VEC_iterate (const_char_p, argbuf, i, arg); i++)
2451 if (strcmp (arg, "|") == 0)
2454 /* Get storage for each command. */
2455 commands = (struct command *) alloca (n_commands * sizeof (struct command));
2457 /* Split argbuf into its separate piped processes,
2458 and record info about each one.
2459 Also search for the programs that are to be run. */
2461 VEC_safe_push (const_char_p, heap, argbuf, 0);
2463 commands[0].prog = VEC_index (const_char_p, argbuf, 0); /* first command. */
2464 commands[0].argv = VEC_address (const_char_p, argbuf);
2466 if (!wrapper_string)
2468 string = find_a_file (&exec_prefixes, commands[0].prog, X_OK, false);
2469 commands[0].argv[0] = (string) ? string : commands[0].argv[0];
2472 for (n_commands = 1, i = 0; VEC_iterate (const_char_p, argbuf, i, arg); i++)
2473 if (arg && strcmp (arg, "|") == 0)
2474 { /* each command. */
2475 #if defined (__MSDOS__) || defined (OS2) || defined (VMS)
2476 fatal_error ("-pipe not supported");
2478 VEC_replace (const_char_p, argbuf, i, 0); /* Termination of
2480 commands[n_commands].prog = VEC_index (const_char_p, argbuf, i + 1);
2481 commands[n_commands].argv
2482 = &(VEC_address (const_char_p, argbuf))[i + 1];
2483 string = find_a_file (&exec_prefixes, commands[n_commands].prog,
2486 commands[n_commands].argv[0] = string;
2490 /* If -v, print what we are about to do, and maybe query. */
2494 /* For help listings, put a blank line between sub-processes. */
2495 if (print_help_list)
2496 fputc ('\n', stderr);
2498 /* Print each piped command as a separate line. */
2499 for (i = 0; i < n_commands; i++)
2501 const char *const *j;
2503 if (verbose_only_flag)
2505 for (j = commands[i].argv; *j; j++)
2508 for (p = *j; *p; ++p)
2509 if (!ISALNUM ((unsigned char) *p)
2510 && *p != '_' && *p != '/' && *p != '-' && *p != '.')
2514 fprintf (stderr, " \"");
2515 for (p = *j; *p; ++p)
2517 if (*p == '"' || *p == '\\' || *p == '$')
2518 fputc ('\\', stderr);
2521 fputc ('"', stderr);
2524 fprintf (stderr, " %s", *j);
2528 for (j = commands[i].argv; *j; j++)
2529 fprintf (stderr, " %s", *j);
2531 /* Print a pipe symbol after all but the last command. */
2532 if (i + 1 != n_commands)
2533 fprintf (stderr, " |");
2534 fprintf (stderr, "\n");
2537 if (verbose_only_flag != 0)
2539 /* verbose_only_flag should act as if the spec was
2540 executed, so increment execution_count before
2541 returning. This prevents spurious warnings about
2542 unused linker input files, etc. */
2547 fnotice (stderr, "\nGo ahead? (y or n) ");
2551 while (getchar () != '\n')
2554 if (i != 'y' && i != 'Y')
2559 #ifdef ENABLE_VALGRIND_CHECKING
2560 /* Run the each command through valgrind. To simplify prepending the
2561 path to valgrind and the option "-q" (for quiet operation unless
2562 something triggers), we allocate a separate argv array. */
2564 for (i = 0; i < n_commands; i++)
2570 for (argc = 0; commands[i].argv[argc] != NULL; argc++)
2573 argv = XALLOCAVEC (const char *, argc + 3);
2575 argv[0] = VALGRIND_PATH;
2577 for (j = 2; j < argc + 2; j++)
2578 argv[j] = commands[i].argv[j - 2];
2581 commands[i].argv = argv;
2582 commands[i].prog = argv[0];
2586 /* Run each piped subprocess. */
2588 pex = pex_init (PEX_USE_PIPES | ((report_times || report_times_to_file)
2589 ? PEX_RECORD_TIMES : 0),
2590 progname, temp_filename);
2592 fatal_error ("pex_init failed: %m");
2594 for (i = 0; i < n_commands; i++)
2598 const char *string = commands[i].argv[0];
2600 errmsg = pex_run (pex,
2601 ((i + 1 == n_commands ? PEX_LAST : 0)
2602 | (string == commands[i].prog ? PEX_SEARCH : 0)),
2603 string, CONST_CAST (char **, commands[i].argv),
2608 fatal_error (errmsg);
2612 pfatal_with_name (errmsg);
2616 if (string != commands[i].prog)
2617 free (CONST_CAST (char *, string));
2622 /* Wait for all the subprocesses to finish. */
2626 struct pex_time *times = NULL;
2629 statuses = (int *) alloca (n_commands * sizeof (int));
2630 if (!pex_get_status (pex, n_commands, statuses))
2631 fatal_error ("failed to get exit status: %m");
2633 if (report_times || report_times_to_file)
2635 times = (struct pex_time *) alloca (n_commands * sizeof (struct pex_time));
2636 if (!pex_get_times (pex, n_commands, times))
2637 fatal_error ("failed to get process times: %m");
2642 for (i = 0; i < n_commands; ++i)
2644 int status = statuses[i];
2646 if (WIFSIGNALED (status))
2649 /* SIGPIPE is a special case. It happens in -pipe mode
2650 when the compiler dies before the preprocessor is done,
2651 or the assembler dies before the compiler is done.
2652 There's generally been an error already, and this is
2653 just fallout. So don't generate another error unless
2654 we would otherwise have succeeded. */
2655 if (WTERMSIG (status) == SIGPIPE
2656 && (signal_count || greatest_status >= MIN_FATAL_STATUS))
2663 internal_error ("%s (program %s)",
2664 strsignal (WTERMSIG (status)), commands[i].prog);
2666 else if (WIFEXITED (status)
2667 && WEXITSTATUS (status) >= MIN_FATAL_STATUS)
2669 if (WEXITSTATUS (status) > greatest_status)
2670 greatest_status = WEXITSTATUS (status);
2674 if (report_times || report_times_to_file)
2676 struct pex_time *pt = ×[i];
2679 ut = ((double) pt->user_seconds
2680 + (double) pt->user_microseconds / 1.0e6);
2681 st = ((double) pt->system_seconds
2682 + (double) pt->system_microseconds / 1.0e6);
2687 fnotice (stderr, "# %s %.2f %.2f\n",
2688 commands[i].prog, ut, st);
2690 if (report_times_to_file)
2693 const char *const *j;
2695 fprintf (report_times_to_file, "%g %g", ut, st);
2697 for (j = &commands[i].prog; *j; j = &commands[i].argv[++c])
2700 for (p = *j; *p; ++p)
2701 if (*p == '"' || *p == '\\' || *p == '$'
2707 fprintf (report_times_to_file, " \"");
2708 for (p = *j; *p; ++p)
2710 if (*p == '"' || *p == '\\' || *p == '$')
2711 fputc ('\\', report_times_to_file);
2712 fputc (*p, report_times_to_file);
2714 fputc ('"', report_times_to_file);
2717 fprintf (report_times_to_file, " %s", *j);
2720 fputc ('\n', report_times_to_file);
2730 /* Find all the switches given to us
2731 and make a vector describing them.
2732 The elements of the vector are strings, one per switch given.
2733 If a switch uses following arguments, then the `part1' field
2734 is the switch itself and the `args' field
2735 is a null-terminated vector containing the following arguments.
2736 Bits in the `live_cond' field are:
2737 SWITCH_LIVE to indicate this switch is true in a conditional spec.
2738 SWITCH_FALSE to indicate this switch is overridden by a later switch.
2739 SWITCH_IGNORE to indicate this switch should be ignored (used in %<S).
2740 SWITCH_IGNORE_PERMANENTLY to indicate this switch should be ignored
2741 in all do_spec calls afterwards. Used for %<S from self specs.
2742 The `validated' field is nonzero if any spec has looked at this switch;
2743 if it remains zero at the end of the run, it must be meaningless. */
2745 #define SWITCH_LIVE 0x1
2746 #define SWITCH_FALSE 0x2
2747 #define SWITCH_IGNORE 0x4
2748 #define SWITCH_IGNORE_PERMANENTLY 0x8
2754 unsigned int live_cond;
2755 unsigned char validated;
2756 unsigned char ordering;
2759 static struct switchstr *switches;
2761 static int n_switches;
2763 static int n_switches_alloc;
2765 /* Set to zero if -fcompare-debug is disabled, positive if it's
2766 enabled and we're running the first compilation, negative if it's
2767 enabled and we're running the second compilation. For most of the
2768 time, it's in the range -1..1, but it can be temporarily set to 2
2769 or 3 to indicate that the -fcompare-debug flags didn't come from
2770 the command-line, but rather from the GCC_COMPARE_DEBUG environment
2771 variable, until a synthesized -fcompare-debug flag is added to the
2775 /* Set to nonzero if we've seen the -fcompare-debug-second flag. */
2776 int compare_debug_second;
2778 /* Set to the flags that should be passed to the second compilation in
2779 a -fcompare-debug compilation. */
2780 const char *compare_debug_opt;
2782 static struct switchstr *switches_debug_check[2];
2784 static int n_switches_debug_check[2];
2786 static int n_switches_alloc_debug_check[2];
2788 static char *debug_check_temp_file[2];
2790 /* Language is one of three things:
2792 1) The name of a real programming language.
2793 2) NULL, indicating that no one has figured out
2795 3) '*', indicating that the file should be passed
2800 const char *language;
2801 struct compiler *incompiler;
2806 /* Also a vector of input files specified. */
2808 static struct infile *infiles;
2812 static int n_infiles_alloc;
2814 /* True if multiple input files are being compiled to a single
2817 static bool combine_inputs;
2819 /* This counts the number of libraries added by lang_specific_driver, so that
2820 we can tell if there were any user supplied any files or libraries. */
2822 static int added_libraries;
2824 /* And a vector of corresponding output files is made up later. */
2826 const char **outfiles;
2828 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2830 /* Convert NAME to a new name if it is the standard suffix. DO_EXE
2831 is true if we should look for an executable suffix. DO_OBJ
2832 is true if we should look for an object suffix. */
2835 convert_filename (const char *name, int do_exe ATTRIBUTE_UNUSED,
2836 int do_obj ATTRIBUTE_UNUSED)
2838 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2846 len = strlen (name);
2848 #ifdef HAVE_TARGET_OBJECT_SUFFIX
2849 /* Convert x.o to x.obj if TARGET_OBJECT_SUFFIX is ".obj". */
2850 if (do_obj && len > 2
2851 && name[len - 2] == '.'
2852 && name[len - 1] == 'o')
2854 obstack_grow (&obstack, name, len - 2);
2855 obstack_grow0 (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX));
2856 name = XOBFINISH (&obstack, const char *);
2860 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2861 /* If there is no filetype, make it the executable suffix (which includes
2862 the "."). But don't get confused if we have just "-o". */
2863 if (! do_exe || TARGET_EXECUTABLE_SUFFIX[0] == 0 || (len == 2 && name[0] == '-'))
2866 for (i = len - 1; i >= 0; i--)
2867 if (IS_DIR_SEPARATOR (name[i]))
2870 for (i++; i < len; i++)
2874 obstack_grow (&obstack, name, len);
2875 obstack_grow0 (&obstack, TARGET_EXECUTABLE_SUFFIX,
2876 strlen (TARGET_EXECUTABLE_SUFFIX));
2877 name = XOBFINISH (&obstack, const char *);
2884 /* Display the command line switches accepted by gcc. */
2888 printf (_("Usage: %s [options] file...\n"), progname);
2889 fputs (_("Options:\n"), stdout);
2891 fputs (_(" -pass-exit-codes Exit with highest error code from a phase\n"), stdout);
2892 fputs (_(" --help Display this information\n"), stdout);
2893 fputs (_(" --target-help Display target specific command line options\n"), stdout);
2894 fputs (_(" --help={target|optimizers|warnings|params|[^]{joined|separate|undocumented}}[,...]\n"), stdout);
2895 fputs (_(" Display specific types of command line options\n"), stdout);
2897 fputs (_(" (Use '-v --help' to display command line options of sub-processes)\n"), stdout);
2898 fputs (_(" --version Display compiler version information\n"), stdout);
2899 fputs (_(" -dumpspecs Display all of the built in spec strings\n"), stdout);
2900 fputs (_(" -dumpversion Display the version of the compiler\n"), stdout);
2901 fputs (_(" -dumpmachine Display the compiler's target processor\n"), stdout);
2902 fputs (_(" -print-search-dirs Display the directories in the compiler's search path\n"), stdout);
2903 fputs (_(" -print-libgcc-file-name Display the name of the compiler's companion library\n"), stdout);
2904 fputs (_(" -print-file-name=<lib> Display the full path to library <lib>\n"), stdout);
2905 fputs (_(" -print-prog-name=<prog> Display the full path to compiler component <prog>\n"), stdout);
2906 fputs (_(" -print-multi-directory Display the root directory for versions of libgcc\n"), stdout);
2908 -print-multi-lib Display the mapping between command line options and\n\
2909 multiple library search directories\n"), stdout);
2910 fputs (_(" -print-multi-os-directory Display the relative path to OS libraries\n"), stdout);
2911 fputs (_(" -print-sysroot Display the target libraries directory\n"), stdout);
2912 fputs (_(" -print-sysroot-headers-suffix Display the sysroot suffix used to find headers\n"), stdout);
2913 fputs (_(" -Wa,<options> Pass comma-separated <options> on to the assembler\n"), stdout);
2914 fputs (_(" -Wp,<options> Pass comma-separated <options> on to the preprocessor\n"), stdout);
2915 fputs (_(" -Wl,<options> Pass comma-separated <options> on to the linker\n"), stdout);
2916 fputs (_(" -Xassembler <arg> Pass <arg> on to the assembler\n"), stdout);
2917 fputs (_(" -Xpreprocessor <arg> Pass <arg> on to the preprocessor\n"), stdout);
2918 fputs (_(" -Xlinker <arg> Pass <arg> on to the linker\n"), stdout);
2919 fputs (_(" -save-temps Do not delete intermediate files\n"), stdout);
2920 fputs (_(" -save-temps=<arg> Do not delete intermediate files\n"), stdout);
2922 -no-canonical-prefixes Do not canonicalize paths when building relative\n\
2923 prefixes to other gcc components\n"), stdout);
2924 fputs (_(" -pipe Use pipes rather than intermediate files\n"), stdout);
2925 fputs (_(" -time Time the execution of each subprocess\n"), stdout);
2926 fputs (_(" -specs=<file> Override built-in specs with the contents of <file>\n"), stdout);
2927 fputs (_(" -std=<standard> Assume that the input sources are for <standard>\n"), stdout);
2929 --sysroot=<directory> Use <directory> as the root directory for headers\n\
2930 and libraries\n"), stdout);
2931 fputs (_(" -B <directory> Add <directory> to the compiler's search paths\n"), stdout);
2932 fputs (_(" -v Display the programs invoked by the compiler\n"), stdout);
2933 fputs (_(" -### Like -v but options quoted and commands not executed\n"), stdout);
2934 fputs (_(" -E Preprocess only; do not compile, assemble or link\n"), stdout);
2935 fputs (_(" -S Compile only; do not assemble or link\n"), stdout);
2936 fputs (_(" -c Compile and assemble, but do not link\n"), stdout);
2937 fputs (_(" -o <file> Place the output into <file>\n"), stdout);
2939 -x <language> Specify the language of the following input files\n\
2940 Permissible languages include: c c++ assembler none\n\
2941 'none' means revert to the default behavior of\n\
2942 guessing the language based on the file's extension\n\
2946 \nOptions starting with -g, -f, -m, -O, -W, or --param are automatically\n\
2947 passed on to the various sub-processes invoked by %s. In order to pass\n\
2948 other options on to these processes the -W<letter> options must be used.\n\
2951 /* The rest of the options are displayed by invocations of the various
2956 add_preprocessor_option (const char *option, int len)
2958 VEC_safe_push (char_p, heap, preprocessor_options,
2959 save_string (option, len));
2963 add_assembler_option (const char *option, int len)
2965 VEC_safe_push (char_p, heap, assembler_options, save_string (option, len));
2969 add_linker_option (const char *option, int len)
2971 VEC_safe_push (char_p, heap, linker_options, save_string (option, len));
2974 /* Allocate space for an input file in infiles. */
2979 if (n_infiles_alloc == 0)
2981 n_infiles_alloc = 16;
2982 infiles = XNEWVEC (struct infile, n_infiles_alloc);
2984 else if (n_infiles_alloc == n_infiles)
2986 n_infiles_alloc *= 2;
2987 infiles = XRESIZEVEC (struct infile, infiles, n_infiles_alloc);
2991 /* Store an input file with the given NAME and LANGUAGE in
2995 add_infile (const char *name, const char *language)
2998 infiles[n_infiles].name = name;
2999 infiles[n_infiles++].language = language;
3002 /* Allocate space for a switch in switches. */
3007 if (n_switches_alloc == 0)
3009 n_switches_alloc = 16;
3010 switches = XNEWVEC (struct switchstr, n_switches_alloc);
3012 else if (n_switches_alloc == n_switches)
3014 n_switches_alloc *= 2;
3015 switches = XRESIZEVEC (struct switchstr, switches, n_switches_alloc);
3019 /* Save an option OPT with N_ARGS arguments in array ARGS, marking it
3020 as validated if VALIDATED. */
3023 save_switch (const char *opt, size_t n_args, const char *const *args,
3027 switches[n_switches].part1 = opt + 1;
3029 switches[n_switches].args = 0;
3032 switches[n_switches].args = XNEWVEC (const char *, n_args + 1);
3033 memcpy (switches[n_switches].args, args, n_args * sizeof (const char *));
3034 switches[n_switches].args[n_args] = NULL;
3037 switches[n_switches].live_cond = 0;
3038 switches[n_switches].validated = validated;
3039 switches[n_switches].ordering = 0;
3043 /* Handle an option DECODED that is unknown to the option-processing
3044 machinery, but may be known to specs. */
3047 driver_unknown_option_callback (const struct cl_decoded_option *decoded)
3049 save_switch (decoded->canonical_option[0],
3050 decoded->canonical_option_num_elements - 1,
3051 &decoded->canonical_option[1], false);
3056 /* Handle an option DECODED that is not marked as CL_DRIVER.
3057 LANG_MASK will always be CL_DRIVER. */
3060 driver_wrong_lang_callback (const struct cl_decoded_option *decoded,
3061 unsigned int lang_mask ATTRIBUTE_UNUSED)
3063 /* At this point, non-driver options are accepted (and expected to
3064 be passed down by specs) unless marked to be rejected by the
3065 driver. Options to be rejected by the driver but accepted by the
3066 compilers proper are treated just like completely unknown
3068 const struct cl_option *option = &cl_options[decoded->opt_index];
3070 if (option->flags & CL_REJECT_DRIVER)
3071 error ("unrecognized command line option %qs",
3072 decoded->orig_option_with_args_text);
3074 driver_unknown_option_callback (decoded);
3077 /* Note that an option (index OPT_INDEX, argument ARG, value VALUE)
3078 has been successfully handled with a handler for mask MASK. */
3081 driver_post_handling_callback (const struct cl_decoded_option *decoded ATTRIBUTE_UNUSED,
3082 unsigned int mask ATTRIBUTE_UNUSED)
3084 /* Nothing to do here. */
3087 static const char *spec_lang = 0;
3088 static int last_language_n_infiles;
3090 /* Handle a driver option; arguments and return value as for
3094 driver_handle_option (struct gcc_options *opts,
3095 struct gcc_options *opts_set,
3096 const struct cl_decoded_option *decoded,
3097 unsigned int lang_mask ATTRIBUTE_UNUSED, int kind,
3099 const struct cl_option_handlers *handlers ATTRIBUTE_UNUSED,
3100 diagnostic_context *dc)
3102 size_t opt_index = decoded->opt_index;
3103 const char *arg = decoded->arg;
3104 const char *compare_debug_replacement_opt;
3105 int value = decoded->value;
3106 bool validated = false;
3107 bool do_save = true;
3109 gcc_assert (opts == &global_options);
3110 gcc_assert (opts_set == &global_options_set);
3111 gcc_assert (kind == DK_UNSPECIFIED);
3112 gcc_assert (loc == UNKNOWN_LOCATION);
3113 gcc_assert (dc == global_dc);
3119 struct spec_list *sl;
3121 for (sl = specs; sl; sl = sl->next)
3122 printf ("*%s:\n%s\n\n", sl->name, *(sl->ptr_spec));
3123 if (link_command_spec)
3124 printf ("*link_command:\n%s\n\n", link_command_spec);
3128 case OPT_dumpversion:
3129 printf ("%s\n", spec_version);
3132 case OPT_dumpmachine:
3133 printf ("%s\n", spec_machine);
3139 /* CPP driver cannot obtain switch from cc1_options. */
3141 add_preprocessor_option ("--version", strlen ("--version"));
3142 add_assembler_option ("--version", strlen ("--version"));
3143 add_linker_option ("--version", strlen ("--version"));
3147 print_help_list = 1;
3149 /* CPP driver cannot obtain switch from cc1_options. */
3151 add_preprocessor_option ("--help", 6);
3152 add_assembler_option ("--help", 6);
3153 add_linker_option ("--help", 6);
3157 print_subprocess_help = 2;
3160 case OPT__target_help:
3161 print_subprocess_help = 1;
3163 /* CPP driver cannot obtain switch from cc1_options. */
3165 add_preprocessor_option ("--target-help", 13);
3166 add_assembler_option ("--target-help", 13);
3167 add_linker_option ("--target-help", 13);
3170 case OPT_pass_exit_codes:
3171 case OPT_print_search_dirs:
3172 case OPT_print_file_name_:
3173 case OPT_print_prog_name_:
3174 case OPT_print_multi_lib:
3175 case OPT_print_multi_directory:
3176 case OPT_print_sysroot:
3177 case OPT_print_multi_os_directory:
3178 case OPT_print_sysroot_headers_suffix:
3181 /* These options set the variables specified in common.opt
3182 automatically, and do not need to be saved for spec
3187 case OPT_print_libgcc_file_name:
3188 print_file_name = "libgcc.a";
3192 case OPT_fcompare_debug_second:
3193 compare_debug_second = 1;
3196 case OPT_fcompare_debug:
3200 compare_debug_replacement_opt = "-fcompare-debug=";
3202 goto compare_debug_with_arg;
3205 compare_debug_replacement_opt = "-fcompare-debug=-gtoggle";
3207 goto compare_debug_with_arg;
3214 case OPT_fcompare_debug_:
3215 compare_debug_replacement_opt = decoded->canonical_option[0];
3216 compare_debug_with_arg:
3217 gcc_assert (decoded->canonical_option_num_elements == 1);
3218 gcc_assert (arg != NULL);
3223 if (compare_debug < 0)
3224 compare_debug_opt = NULL;
3226 compare_debug_opt = arg;
3227 save_switch (compare_debug_replacement_opt, 0, NULL, validated);
3233 /* Pass the rest of this option to the assembler. */
3235 /* Split the argument at commas. */
3237 for (j = 0; arg[j]; j++)
3240 add_assembler_option (arg + prev, j - prev);
3244 /* Record the part after the last comma. */
3245 add_assembler_option (arg + prev, j - prev);
3253 /* Pass the rest of this option to the preprocessor. */
3255 /* Split the argument at commas. */
3257 for (j = 0; arg[j]; j++)
3260 add_preprocessor_option (arg + prev, j - prev);
3264 /* Record the part after the last comma. */
3265 add_preprocessor_option (arg + prev, j - prev);
3273 /* Split the argument at commas. */
3275 for (j = 0; arg[j]; j++)
3278 add_infile (save_string (arg + prev, j - prev), "*");
3281 /* Record the part after the last comma. */
3282 add_infile (arg + prev, "*");
3288 add_infile (arg, "*");
3292 case OPT_Xpreprocessor:
3293 add_preprocessor_option (arg, strlen (arg));
3297 case OPT_Xassembler:
3298 add_assembler_option (arg, strlen (arg));
3303 /* POSIX allows separation of -l and the lib arg; canonicalize
3304 by concatenating -l with its arg */
3305 add_infile (concat ("-l", arg, NULL), "*");
3310 /* Similarly, canonicalize -L for linkers that may not accept
3311 separate arguments. */
3312 save_switch (concat ("-L", arg, NULL), 0, NULL, validated);
3315 case OPT_save_temps:
3316 save_temps_flag = SAVE_TEMPS_CWD;
3320 case OPT_save_temps_:
3321 if (strcmp (arg, "cwd") == 0)
3322 save_temps_flag = SAVE_TEMPS_CWD;
3323 else if (strcmp (arg, "obj") == 0
3324 || strcmp (arg, "object") == 0)
3325 save_temps_flag = SAVE_TEMPS_OBJ;
3327 fatal_error ("%qs is an unknown -save-temps option",
3328 decoded->orig_option_with_args_text);
3331 case OPT_no_canonical_prefixes:
3332 /* Already handled as a special case, so ignored here. */
3338 /* These options set the variables specified in common.opt
3339 automatically, but do need to be saved for spec
3345 struct user_specs *user = XNEW (struct user_specs);
3347 user->next = (struct user_specs *) 0;
3348 user->filename = arg;
3349 if (user_specs_tail)
3350 user_specs_tail->next = user;
3352 user_specs_head = user;
3353 user_specs_tail = user;
3359 target_system_root = arg;
3360 target_system_root_changed = 1;
3365 if (report_times_to_file)
3366 fclose (report_times_to_file);
3367 report_times_to_file = fopen (arg, "a");
3373 This is similar to -v except that there is no execution
3374 of the commands and the echoed arguments are quoted. It
3375 is intended for use in shell scripts to capture the
3376 driver-generated command line. */
3377 verbose_only_flag++;
3384 size_t len = strlen (arg);
3386 /* Catch the case where the user has forgotten to append a
3387 directory separator to the path. Note, they may be using
3388 -B to add an executable name prefix, eg "i386-elf-", in
3389 order to distinguish between multiple installations of
3390 GCC in the same directory. Hence we must check to see
3391 if appending a directory separator actually makes a
3392 valid directory name. */
3393 if (!IS_DIR_SEPARATOR (arg[len - 1])
3394 && is_directory (arg, false))
3396 char *tmp = XNEWVEC (char, len + 2);
3398 tmp[len] = DIR_SEPARATOR;
3403 add_prefix (&exec_prefixes, arg, NULL,
3404 PREFIX_PRIORITY_B_OPT, 0, 0);
3405 add_prefix (&startfile_prefixes, arg, NULL,
3406 PREFIX_PRIORITY_B_OPT, 0, 0);
3407 add_prefix (&include_prefixes, arg, NULL,
3408 PREFIX_PRIORITY_B_OPT, 0, 0);
3415 if (!strcmp (spec_lang, "none"))
3416 /* Suppress the warning if -xnone comes after the last input
3417 file, because alternate command interfaces like g++ might
3418 find it useful to place -xnone after each input file. */
3421 last_language_n_infiles = n_infiles;
3427 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX) || defined(HAVE_TARGET_OBJECT_SUFFIX)
3428 arg = convert_filename (arg, ! have_c, 0);
3430 /* Save the output name in case -save-temps=obj was used. */
3431 save_temps_prefix = xstrdup (arg);
3432 /* On some systems, ld cannot handle "-o" without a space. So
3433 split the option from its argument. */
3434 save_switch ("-o", 1, &arg, validated);
3437 case OPT_static_libgcc:
3438 case OPT_shared_libgcc:
3439 case OPT_static_libgfortran:
3440 case OPT_static_libstdc__:
3441 /* These are always valid, since gcc.c itself understands the
3442 first two, gfortranspec.c understands -static-libgfortran and
3443 g++spec.c understands -static-libstdc++ */
3448 /* Various driver options need no special processing at this
3449 point, having been handled in a prescan above or being
3450 handled by specs. */
3455 save_switch (decoded->canonical_option[0],
3456 decoded->canonical_option_num_elements - 1,
3457 &decoded->canonical_option[1], validated);
3461 /* Put the driver's standard set of option handlers in *HANDLERS. */
3464 set_option_handlers (struct cl_option_handlers *handlers)
3466 handlers->unknown_option_callback = driver_unknown_option_callback;
3467 handlers->wrong_lang_callback = driver_wrong_lang_callback;
3468 handlers->post_handling_callback = driver_post_handling_callback;
3469 handlers->num_handlers = 1;
3470 handlers->handlers[0].handler = driver_handle_option;
3471 handlers->handlers[0].mask = CL_DRIVER;
3474 /* Create the vector `switches' and its contents.
3475 Store its length in `n_switches'. */
3478 process_command (unsigned int decoded_options_count,
3479 struct cl_decoded_option *decoded_options)
3483 const char *tooldir_prefix;
3484 char *(*get_relative_prefix) (const char *, const char *,
3485 const char *) = NULL;
3486 struct cl_option_handlers handlers;
3489 gcc_exec_prefix = getenv ("GCC_EXEC_PREFIX");
3493 added_libraries = 0;
3495 /* Figure compiler version from version string. */
3497 compiler_version = temp1 = xstrdup (version_string);
3499 for (; *temp1; ++temp1)
3508 /* Handle any -no-canonical-prefixes flag early, to assign the function
3509 that builds relative prefixes. This function creates default search
3510 paths that are needed later in normal option handling. */
3512 for (j = 1; j < decoded_options_count; j++)
3514 if (decoded_options[j].opt_index == OPT_no_canonical_prefixes)
3516 get_relative_prefix = make_relative_prefix_ignore_links;
3520 if (! get_relative_prefix)
3521 get_relative_prefix = make_relative_prefix;
3523 /* Set up the default search paths. If there is no GCC_EXEC_PREFIX,
3524 see if we can create it from the pathname specified in
3525 decoded_options[0].arg. */
3527 gcc_libexec_prefix = standard_libexec_prefix;
3529 /* FIXME: make_relative_prefix doesn't yet work for VMS. */
3530 if (!gcc_exec_prefix)
3532 gcc_exec_prefix = get_relative_prefix (decoded_options[0].arg,
3533 standard_bindir_prefix,
3534 standard_exec_prefix);
3535 gcc_libexec_prefix = get_relative_prefix (decoded_options[0].arg,
3536 standard_bindir_prefix,
3537 standard_libexec_prefix);
3538 if (gcc_exec_prefix)
3539 xputenv (concat ("GCC_EXEC_PREFIX=", gcc_exec_prefix, NULL));
3543 /* make_relative_prefix requires a program name, but
3544 GCC_EXEC_PREFIX is typically a directory name with a trailing
3545 / (which is ignored by make_relative_prefix), so append a
3547 char *tmp_prefix = concat (gcc_exec_prefix, "gcc", NULL);
3548 gcc_libexec_prefix = get_relative_prefix (tmp_prefix,
3549 standard_exec_prefix,
3550 standard_libexec_prefix);
3552 /* The path is unrelocated, so fallback to the original setting. */
3553 if (!gcc_libexec_prefix)
3554 gcc_libexec_prefix = standard_libexec_prefix;
3560 /* From this point onward, gcc_exec_prefix is non-null if the toolchain
3561 is relocated. The toolchain was either relocated using GCC_EXEC_PREFIX
3562 or an automatically created GCC_EXEC_PREFIX from
3563 decoded_options[0].arg. */
3565 /* Do language-specific adjustment/addition of flags. */
3566 lang_specific_driver (&decoded_options, &decoded_options_count,
3569 if (gcc_exec_prefix)
3571 int len = strlen (gcc_exec_prefix);
3573 if (len > (int) sizeof ("/lib/gcc/") - 1
3574 && (IS_DIR_SEPARATOR (gcc_exec_prefix[len-1])))
3576 temp = gcc_exec_prefix + len - sizeof ("/lib/gcc/") + 1;
3577 if (IS_DIR_SEPARATOR (*temp)
3578 && strncmp (temp + 1, "lib", 3) == 0
3579 && IS_DIR_SEPARATOR (temp[4])
3580 && strncmp (temp + 5, "gcc", 3) == 0)
3581 len -= sizeof ("/lib/gcc/") - 1;
3584 set_std_prefix (gcc_exec_prefix, len);
3585 add_prefix (&exec_prefixes, gcc_libexec_prefix, "GCC",
3586 PREFIX_PRIORITY_LAST, 0, 0);
3587 add_prefix (&startfile_prefixes, gcc_exec_prefix, "GCC",
3588 PREFIX_PRIORITY_LAST, 0, 0);
3591 /* COMPILER_PATH and LIBRARY_PATH have values
3592 that are lists of directory names with colons. */
3594 temp = getenv ("COMPILER_PATH");
3597 const char *startp, *endp;
3598 char *nstore = (char *) alloca (strlen (temp) + 3);
3600 startp = endp = temp;
3603 if (*endp == PATH_SEPARATOR || *endp == 0)
3605 strncpy (nstore, startp, endp - startp);
3607 strcpy (nstore, concat (".", dir_separator_str, NULL));
3608 else if (!IS_DIR_SEPARATOR (endp[-1]))
3610 nstore[endp - startp] = DIR_SEPARATOR;
3611 nstore[endp - startp + 1] = 0;
3614 nstore[endp - startp] = 0;
3615 add_prefix (&exec_prefixes, nstore, 0,
3616 PREFIX_PRIORITY_LAST, 0, 0);
3617 add_prefix (&include_prefixes, nstore, 0,
3618 PREFIX_PRIORITY_LAST, 0, 0);
3621 endp = startp = endp + 1;
3628 temp = getenv (LIBRARY_PATH_ENV);
3629 if (temp && *cross_compile == '0')
3631 const char *startp, *endp;
3632 char *nstore = (char *) alloca (strlen (temp) + 3);
3634 startp = endp = temp;
3637 if (*endp == PATH_SEPARATOR || *endp == 0)
3639 strncpy (nstore, startp, endp - startp);
3641 strcpy (nstore, concat (".", dir_separator_str, NULL));
3642 else if (!IS_DIR_SEPARATOR (endp[-1]))
3644 nstore[endp - startp] = DIR_SEPARATOR;
3645 nstore[endp - startp + 1] = 0;
3648 nstore[endp - startp] = 0;
3649 add_prefix (&startfile_prefixes, nstore, NULL,
3650 PREFIX_PRIORITY_LAST, 0, 1);
3653 endp = startp = endp + 1;
3660 /* Use LPATH like LIBRARY_PATH (for the CMU build program). */
3661 temp = getenv ("LPATH");
3662 if (temp && *cross_compile == '0')
3664 const char *startp, *endp;
3665 char *nstore = (char *) alloca (strlen (temp) + 3);
3667 startp = endp = temp;
3670 if (*endp == PATH_SEPARATOR || *endp == 0)
3672 strncpy (nstore, startp, endp - startp);
3674 strcpy (nstore, concat (".", dir_separator_str, NULL));
3675 else if (!IS_DIR_SEPARATOR (endp[-1]))
3677 nstore[endp - startp] = DIR_SEPARATOR;
3678 nstore[endp - startp + 1] = 0;
3681 nstore[endp - startp] = 0;
3682 add_prefix (&startfile_prefixes, nstore, NULL,
3683 PREFIX_PRIORITY_LAST, 0, 1);
3686 endp = startp = endp + 1;
3693 /* Process the options and store input files and switches in their
3696 last_language_n_infiles = -1;
3698 set_option_handlers (&handlers);
3700 for (j = 1; j < decoded_options_count; j++)
3702 switch (decoded_options[j].opt_index)
3714 for (j = 1; j < decoded_options_count; j++)
3716 if (decoded_options[j].opt_index == OPT_SPECIAL_input_file)
3718 const char *arg = decoded_options[j].arg;
3719 const char *p = strrchr (arg, '@');
3723 #ifdef HAVE_TARGET_OBJECT_SUFFIX
3724 arg = convert_filename (arg, 0, access (arg, F_OK));
3726 /* For LTO static archive support we handle input file
3727 specifications that are composed of a filename and
3728 an offset like FNAME@OFFSET. */
3731 && sscanf (p, "@%li%n", &offset, &consumed) >= 1
3732 && strlen (p) == (unsigned int)consumed)
3734 fname = (char *)xmalloc (p - arg + 1);
3735 memcpy (fname, arg, p - arg);
3736 fname[p - arg] = '\0';
3737 /* Only accept non-stdin and existing FNAME parts, otherwise
3738 try with the full name. */
3739 if (strcmp (fname, "-") == 0 || access (fname, F_OK) < 0)
3742 fname = xstrdup (arg);
3746 fname = xstrdup (arg);
3748 if (strcmp (fname, "-") != 0 && access (fname, F_OK) < 0)
3749 perror_with_name (fname);
3751 add_infile (arg, spec_lang);
3757 read_cmdline_option (&global_options, &global_options_set,
3758 decoded_options + j, UNKNOWN_LOCATION,
3759 CL_DRIVER, &handlers, global_dc);
3762 /* If -save-temps=obj and -o name, create the prefix to use for %b.
3763 Otherwise just make -save-temps=obj the same as -save-temps=cwd. */
3764 if (save_temps_flag == SAVE_TEMPS_OBJ && save_temps_prefix != NULL)
3766 save_temps_length = strlen (save_temps_prefix);
3767 temp = strrchr (lbasename (save_temps_prefix), '.');
3770 save_temps_length -= strlen (temp);
3771 save_temps_prefix[save_temps_length] = '\0';
3775 else if (save_temps_prefix != NULL)
3777 free (save_temps_prefix);
3778 save_temps_prefix = NULL;
3781 if (save_temps_flag && use_pipes)
3783 /* -save-temps overrides -pipe, so that temp files are produced */
3784 if (save_temps_flag)
3785 warning (0, "-pipe ignored because -save-temps specified");
3791 const char *gcd = getenv ("GCC_COMPARE_DEBUG");
3793 if (gcd && gcd[0] == '-')
3796 compare_debug_opt = gcd;
3798 else if (gcd && *gcd && strcmp (gcd, "0"))
3801 compare_debug_opt = "-gtoggle";
3804 else if (compare_debug < 0)
3807 gcc_assert (!compare_debug_opt);
3810 /* Set up the search paths. We add directories that we expect to
3811 contain GNU Toolchain components before directories specified by
3812 the machine description so that we will find GNU components (like
3813 the GNU assembler) before those of the host system. */
3815 /* If we don't know where the toolchain has been installed, use the
3816 configured-in locations. */
3817 if (!gcc_exec_prefix)
3820 add_prefix (&exec_prefixes, standard_libexec_prefix, "GCC",
3821 PREFIX_PRIORITY_LAST, 1, 0);
3822 add_prefix (&exec_prefixes, standard_libexec_prefix, "BINUTILS",
3823 PREFIX_PRIORITY_LAST, 2, 0);
3824 add_prefix (&exec_prefixes, standard_exec_prefix, "BINUTILS",
3825 PREFIX_PRIORITY_LAST, 2, 0);
3827 add_prefix (&startfile_prefixes, standard_exec_prefix, "BINUTILS",
3828 PREFIX_PRIORITY_LAST, 1, 0);
3831 gcc_assert (!IS_ABSOLUTE_PATH (tooldir_base_prefix));
3832 tooldir_prefix = concat (tooldir_base_prefix, spec_machine,
3833 dir_separator_str, NULL);
3835 /* Look for tools relative to the location from which the driver is
3836 running, or, if that is not available, the configured prefix. */
3838 = concat (gcc_exec_prefix ? gcc_exec_prefix : standard_exec_prefix,
3839 spec_machine, dir_separator_str,
3840 spec_version, dir_separator_str, tooldir_prefix, NULL);
3842 add_prefix (&exec_prefixes,
3843 concat (tooldir_prefix, "bin", dir_separator_str, NULL),
3844 "BINUTILS", PREFIX_PRIORITY_LAST, 0, 0);
3845 add_prefix (&startfile_prefixes,
3846 concat (tooldir_prefix, "lib", dir_separator_str, NULL),
3847 "BINUTILS", PREFIX_PRIORITY_LAST, 0, 1);
3849 #if defined(TARGET_SYSTEM_ROOT_RELOCATABLE) && !defined(VMS)
3850 /* If the normal TARGET_SYSTEM_ROOT is inside of $exec_prefix,
3851 then consider it to relocate with the rest of the GCC installation
3852 if GCC_EXEC_PREFIX is set.
3853 ``make_relative_prefix'' is not compiled for VMS, so don't call it. */
3854 if (target_system_root && !target_system_root_changed && gcc_exec_prefix)
3856 char *tmp_prefix = get_relative_prefix (decoded_options[0].arg,
3857 standard_bindir_prefix,
3858 target_system_root);
3859 if (tmp_prefix && access_check (tmp_prefix, F_OK) == 0)
3861 target_system_root = tmp_prefix;
3862 target_system_root_changed = 1;
3867 /* More prefixes are enabled in main, after we read the specs file
3868 and determine whether this is cross-compilation or not. */
3870 if (n_infiles == last_language_n_infiles && spec_lang != 0)
3871 warning (0, "%<-x %s%> after last input file has no effect", spec_lang);
3873 if (compare_debug == 2 || compare_debug == 3)
3876 switches[n_switches].part1 = concat ("fcompare-debug=",
3879 switches[n_switches].args = 0;
3880 switches[n_switches].live_cond = 0;
3881 switches[n_switches].validated = 0;
3882 switches[n_switches].ordering = 0;
3887 /* Ensure we only invoke each subprocess once. */
3888 if (print_subprocess_help || print_help_list || print_version)
3892 /* Create a dummy input file, so that we can pass
3893 the help option on to the various sub-processes. */
3894 add_infile ("help-dummy", "c");
3898 switches[n_switches].part1 = 0;
3900 infiles[n_infiles].name = 0;
3903 /* Store switches not filtered out by %<S in spec in COLLECT_GCC_OPTIONS
3904 and place that in the environment. */
3907 set_collect_gcc_options (void)
3912 /* Build COLLECT_GCC_OPTIONS to have all of the options specified to
3914 obstack_grow (&collect_obstack, "COLLECT_GCC_OPTIONS=",
3915 sizeof ("COLLECT_GCC_OPTIONS=") - 1);
3918 for (i = 0; (int) i < n_switches; i++)
3920 const char *const *args;
3923 obstack_grow (&collect_obstack, " ", 1);
3927 /* Ignore elided switches. */
3928 if ((switches[i].live_cond & SWITCH_IGNORE) != 0)
3931 obstack_grow (&collect_obstack, "'-", 2);
3932 q = switches[i].part1;
3933 while ((p = strchr (q, '\'')))
3935 obstack_grow (&collect_obstack, q, p - q);
3936 obstack_grow (&collect_obstack, "'\\''", 4);
3939 obstack_grow (&collect_obstack, q, strlen (q));
3940 obstack_grow (&collect_obstack, "'", 1);
3942 for (args = switches[i].args; args && *args; args++)
3944 obstack_grow (&collect_obstack, " '", 2);
3946 while ((p = strchr (q, '\'')))
3948 obstack_grow (&collect_obstack, q, p - q);
3949 obstack_grow (&collect_obstack, "'\\''", 4);
3952 obstack_grow (&collect_obstack, q, strlen (q));
3953 obstack_grow (&collect_obstack, "'", 1);
3956 obstack_grow (&collect_obstack, "\0", 1);
3957 xputenv (XOBFINISH (&collect_obstack, char *));
3960 /* Process a spec string, accumulating and running commands. */
3962 /* These variables describe the input file name.
3963 input_file_number is the index on outfiles of this file,
3964 so that the output file name can be stored for later use by %o.
3965 input_basename is the start of the part of the input file
3966 sans all directory names, and basename_length is the number
3967 of characters starting there excluding the suffix .c or whatever. */
3969 static const char *gcc_input_filename;
3970 static int input_file_number;
3971 size_t input_filename_length;
3972 static int basename_length;
3973 static int suffixed_basename_length;
3974 static const char *input_basename;
3975 static const char *input_suffix;
3976 #ifndef HOST_LACKS_INODE_NUMBERS
3977 static struct stat input_stat;
3979 static int input_stat_set;
3981 /* The compiler used to process the current input file. */
3982 static struct compiler *input_file_compiler;
3984 /* These are variables used within do_spec and do_spec_1. */
3986 /* Nonzero if an arg has been started and not yet terminated
3987 (with space, tab or newline). */
3988 static int arg_going;
3990 /* Nonzero means %d or %g has been seen; the next arg to be terminated
3991 is a temporary file name. */
3992 static int delete_this_arg;
3994 /* Nonzero means %w has been seen; the next arg to be terminated
3995 is the output file name of this compilation. */
3996 static int this_is_output_file;
3998 /* Nonzero means %s has been seen; the next arg to be terminated
3999 is the name of a library file and we should try the standard
4000 search dirs for it. */
4001 static int this_is_library_file;
4003 /* Nonzero means %T has been seen; the next arg to be terminated
4004 is the name of a linker script and we should try all of the
4005 standard search dirs for it. If it is found insert a --script
4006 command line switch and then substitute the full path in place,
4007 otherwise generate an error message. */
4008 static int this_is_linker_script;
4010 /* Nonzero means that the input of this command is coming from a pipe. */
4011 static int input_from_pipe;
4013 /* Nonnull means substitute this for any suffix when outputting a switches
4015 static const char *suffix_subst;
4017 /* If there is an argument being accumulated, terminate it and store it. */
4020 end_going_arg (void)
4026 obstack_1grow (&obstack, 0);
4027 string = XOBFINISH (&obstack, const char *);
4028 if (this_is_library_file)
4029 string = find_file (string);
4030 if (this_is_linker_script)
4032 char * full_script_path = find_a_file (&startfile_prefixes, string, R_OK, true);
4034 if (full_script_path == NULL)
4036 error ("unable to locate default linker script %qs in the library search paths", string);
4037 /* Script was not found on search path. */
4040 store_arg ("--script", false, false);
4041 string = full_script_path;
4043 store_arg (string, delete_this_arg, this_is_output_file);
4044 if (this_is_output_file)
4045 outfiles[input_file_number] = string;
4051 /* Parse the WRAPPER string which is a comma separated list of the command line
4052 and insert them into the beginning of argbuf. */
4055 insert_wrapper (const char *wrapper)
4059 char *buf = xstrdup (wrapper);
4061 unsigned int old_length = VEC_length (const_char_p, argbuf);
4069 while ((p = strchr (p, ',')) != NULL);
4071 VEC_safe_grow (const_char_p, heap, argbuf, old_length + n);
4072 memmove (VEC_address (const_char_p, argbuf) + n,
4073 VEC_address (const_char_p, argbuf),
4074 old_length * sizeof (const_char_p));
4085 VEC_replace (const_char_p, argbuf, i, p);
4088 while ((p = strchr (p, ',')) != NULL);
4089 gcc_assert (i == n);
4092 /* Process the spec SPEC and run the commands specified therein.
4093 Returns 0 if the spec is successfully processed; -1 if failed. */
4096 do_spec (const char *spec)
4100 value = do_spec_2 (spec);
4102 /* Force out any unfinished command.
4103 If -pipe, this forces out the last command if it ended in `|'. */
4106 if (VEC_length (const_char_p, argbuf) > 0
4107 && !strcmp (VEC_last (const_char_p, argbuf), "|"))
4108 VEC_pop (const_char_p, argbuf);
4110 set_collect_gcc_options ();
4112 if (VEC_length (const_char_p, argbuf) > 0)
4120 do_spec_2 (const char *spec)
4126 delete_this_arg = 0;
4127 this_is_output_file = 0;
4128 this_is_library_file = 0;
4129 this_is_linker_script = 0;
4130 input_from_pipe = 0;
4131 suffix_subst = NULL;
4133 result = do_spec_1 (spec, 0, NULL);
4141 /* Process the given spec string and add any new options to the end
4142 of the switches/n_switches array. */
4145 do_option_spec (const char *name, const char *spec)
4147 unsigned int i, value_count, value_len;
4148 const char *p, *q, *value;
4149 char *tmp_spec, *tmp_spec_p;
4151 if (configure_default_options[0].name == NULL)
4154 for (i = 0; i < ARRAY_SIZE (configure_default_options); i++)
4155 if (strcmp (configure_default_options[i].name, name) == 0)
4157 if (i == ARRAY_SIZE (configure_default_options))
4160 value = configure_default_options[i].value;
4161 value_len = strlen (value);
4163 /* Compute the size of the final spec. */
4166 while ((p = strstr (p, "%(VALUE)")) != NULL)
4172 /* Replace each %(VALUE) by the specified value. */
4173 tmp_spec = (char *) alloca (strlen (spec) + 1
4174 + value_count * (value_len - strlen ("%(VALUE)")));
4175 tmp_spec_p = tmp_spec;
4177 while ((p = strstr (q, "%(VALUE)")) != NULL)
4179 memcpy (tmp_spec_p, q, p - q);
4180 tmp_spec_p = tmp_spec_p + (p - q);
4181 memcpy (tmp_spec_p, value, value_len);
4182 tmp_spec_p += value_len;
4183 q = p + strlen ("%(VALUE)");
4185 strcpy (tmp_spec_p, q);
4187 do_self_spec (tmp_spec);
4190 /* Process the given spec string and add any new options to the end
4191 of the switches/n_switches array. */
4194 do_self_spec (const char *spec)
4199 do_spec_1 (" ", 0, NULL);
4201 /* Mark %<S switches processed by do_self_spec to be ignored permanently.
4202 do_self_specs adds the replacements to switches array, so it shouldn't
4203 be processed afterwards. */
4204 for (i = 0; i < n_switches; i++)
4205 if ((switches[i].live_cond & SWITCH_IGNORE))
4206 switches[i].live_cond |= SWITCH_IGNORE_PERMANENTLY;
4208 if (VEC_length (const_char_p, argbuf) > 0)
4210 const char **argbuf_copy;
4211 struct cl_decoded_option *decoded_options;
4212 struct cl_option_handlers handlers;
4213 unsigned int decoded_options_count;
4216 /* Create a copy of argbuf with a dummy argv[0] entry for
4217 decode_cmdline_options_to_array. */
4218 argbuf_copy = XNEWVEC (const char *,
4219 VEC_length (const_char_p, argbuf) + 1);
4220 argbuf_copy[0] = "";
4221 memcpy (argbuf_copy + 1, VEC_address (const_char_p, argbuf),
4222 VEC_length (const_char_p, argbuf) * sizeof (const char *));
4224 decode_cmdline_options_to_array (VEC_length (const_char_p, argbuf) + 1,
4226 CL_DRIVER, &decoded_options,
4227 &decoded_options_count);
4229 set_option_handlers (&handlers);
4231 for (j = 1; j < decoded_options_count; j++)
4233 switch (decoded_options[j].opt_index)
4235 case OPT_SPECIAL_input_file:
4236 /* Specs should only generate options, not input
4238 if (strcmp (decoded_options[j].arg, "-") != 0)
4239 fatal_error ("switch %qs does not start with %<-%>",
4240 decoded_options[j].arg);
4242 fatal_error ("spec-generated switch is just %<-%>");
4245 case OPT_fcompare_debug_second:
4246 case OPT_fcompare_debug:
4247 case OPT_fcompare_debug_:
4249 /* Avoid duplicate processing of some options from
4250 compare-debug specs; just save them here. */
4251 save_switch (decoded_options[j].canonical_option[0],
4252 (decoded_options[j].canonical_option_num_elements
4254 &decoded_options[j].canonical_option[1], false);
4258 read_cmdline_option (&global_options, &global_options_set,
4259 decoded_options + j, UNKNOWN_LOCATION,
4260 CL_DRIVER, &handlers, global_dc);
4266 switches[n_switches].part1 = 0;
4270 /* Callback for processing %D and %I specs. */
4272 struct spec_path_info {
4277 bool separate_options;
4281 spec_path (char *path, void *data)
4283 struct spec_path_info *info = (struct spec_path_info *) data;
4287 if (info->omit_relative && !IS_ABSOLUTE_PATH (path))
4290 if (info->append_len != 0)
4292 len = strlen (path);
4293 memcpy (path + len, info->append, info->append_len + 1);
4296 if (!is_directory (path, true))
4299 do_spec_1 (info->option, 1, NULL);
4300 if (info->separate_options)
4301 do_spec_1 (" ", 0, NULL);
4303 if (info->append_len == 0)
4305 len = strlen (path);
4306 save = path[len - 1];
4307 if (IS_DIR_SEPARATOR (path[len - 1]))
4308 path[len - 1] = '\0';
4311 do_spec_1 (path, 1, NULL);
4312 do_spec_1 (" ", 0, NULL);
4314 /* Must not damage the original path. */
4315 if (info->append_len == 0)
4316 path[len - 1] = save;
4321 /* Create a temporary FILE with the contents of ARGV. Add @FILE to the
4325 create_at_file (char **argv)
4327 char *temp_file = make_temp_file ("");
4328 char *at_argument = concat ("@", temp_file, NULL);
4329 FILE *f = fopen (temp_file, "w");
4333 fatal_error ("could not open temporary response file %s",
4336 status = writeargv (argv, f);
4339 fatal_error ("could not write to temporary response file %s",
4342 status = fclose (f);
4345 fatal_error ("could not close temporary response file %s",
4348 store_arg (at_argument, 0, 0);
4350 record_temp_file (temp_file, !save_temps_flag, !save_temps_flag);
4353 /* True if we should compile INFILE. */
4356 compile_input_file_p (struct infile *infile)
4358 if ((!infile->language) || (infile->language[0] != '*'))
4359 if (infile->incompiler == input_file_compiler)
4364 /* Process each member of VEC as a spec. */
4367 do_specs_vec (VEC(char_p,heap) *vec)
4372 FOR_EACH_VEC_ELT (char_p, vec, ix, opt)
4374 do_spec_1 (opt, 1, NULL);
4375 /* Make each accumulated option a separate argument. */
4376 do_spec_1 (" ", 0, NULL);
4380 /* Process the sub-spec SPEC as a portion of a larger spec.
4381 This is like processing a whole spec except that we do
4382 not initialize at the beginning and we do not supply a
4383 newline by default at the end.
4384 INSWITCH nonzero means don't process %-sequences in SPEC;
4385 in this case, % is treated as an ordinary character.
4386 This is used while substituting switches.
4387 INSWITCH nonzero also causes SPC not to terminate an argument.
4389 Value is zero unless a line was finished
4390 and the command on that line reported an error. */
4393 do_spec_1 (const char *spec, int inswitch, const char *soft_matched_part)
4395 const char *p = spec;
4401 /* If substituting a switch, treat all chars like letters.
4402 Otherwise, NL, SPC, TAB and % are special. */
4403 switch (inswitch ? 'a' : c)
4408 if (VEC_length (const_char_p, argbuf) > 0
4409 && !strcmp (VEC_last (const_char_p, argbuf), "|"))
4411 /* A `|' before the newline means use a pipe here,
4412 but only if -pipe was specified.
4413 Otherwise, execute now and don't pass the `|' as an arg. */
4416 input_from_pipe = 1;
4420 VEC_pop (const_char_p, argbuf);
4423 set_collect_gcc_options ();
4425 if (VEC_length (const_char_p, argbuf) > 0)
4431 /* Reinitialize for a new command, and for a new argument. */
4434 delete_this_arg = 0;
4435 this_is_output_file = 0;
4436 this_is_library_file = 0;
4437 this_is_linker_script = 0;
4438 input_from_pipe = 0;
4445 obstack_1grow (&obstack, c);
4453 /* Reinitialize for a new argument. */
4454 delete_this_arg = 0;
4455 this_is_output_file = 0;
4456 this_is_library_file = 0;
4457 this_is_linker_script = 0;
4464 fatal_error ("spec %qs invalid", spec);
4467 if (save_temps_length)
4468 obstack_grow (&obstack, save_temps_prefix, save_temps_length);
4470 obstack_grow (&obstack, input_basename, basename_length);
4471 if (compare_debug < 0)
4472 obstack_grow (&obstack, ".gk", 3);
4477 if (save_temps_length)
4478 obstack_grow (&obstack, save_temps_prefix, save_temps_length);
4480 obstack_grow (&obstack, input_basename, suffixed_basename_length);
4481 if (compare_debug < 0)
4482 obstack_grow (&obstack, ".gk", 3);
4487 delete_this_arg = 2;
4490 /* Dump out the directories specified with LIBRARY_PATH,
4491 followed by the absolute directories
4492 that we search for startfiles. */
4495 struct spec_path_info info;
4498 info.append_len = 0;
4499 #ifdef RELATIVE_PREFIX_NOT_LINKDIR
4500 /* Used on systems which record the specified -L dirs
4501 and use them to search for dynamic linking.
4502 Relative directories always come from -B,
4503 and it is better not to use them for searching
4504 at run time. In particular, stage1 loses. */
4505 info.omit_relative = true;
4507 info.omit_relative = false;
4509 info.separate_options = false;
4511 for_each_path (&startfile_prefixes, true, 0, spec_path, &info);
4516 /* %efoo means report an error with `foo' as error message
4517 and don't execute any more commands for this file. */
4521 while (*p != 0 && *p != '\n')
4523 buf = (char *) alloca (p - q + 1);
4524 strncpy (buf, q, p - q);
4526 error ("%s", _(buf));
4531 /* %nfoo means report a notice with `foo' on stderr. */
4535 while (*p != 0 && *p != '\n')
4537 buf = (char *) alloca (p - q + 1);
4538 strncpy (buf, q, p - q);
4540 inform (0, "%s", _(buf));
4550 /* If save_temps_flag is off, and the HOST_BIT_BUCKET is
4551 defined, and it is not a directory, and it is
4552 writable, use it. Otherwise, treat this like any
4553 other temporary file. */
4555 if ((!save_temps_flag)
4556 && (stat (HOST_BIT_BUCKET, &st) == 0) && (!S_ISDIR (st.st_mode))
4557 && (access (HOST_BIT_BUCKET, W_OK) == 0))
4559 obstack_grow (&obstack, HOST_BIT_BUCKET,
4560 strlen (HOST_BIT_BUCKET));
4561 delete_this_arg = 0;
4566 goto create_temp_file;
4570 obstack_1grow (&obstack, '-');
4571 delete_this_arg = 0;
4574 /* consume suffix */
4575 while (*p == '.' || ISALNUM ((unsigned char) *p))
4577 if (p[0] == '%' && p[1] == 'O')
4582 goto create_temp_file;
4586 /* consume suffix */
4587 while (*p == '.' || ISALNUM ((unsigned char) *p))
4589 if (p[0] == '%' && p[1] == 'O')
4594 goto create_temp_file;
4600 struct temp_name *t;
4602 const char *suffix = p;
4603 char *saved_suffix = NULL;
4605 while (*p == '.' || ISALNUM ((unsigned char) *p))
4607 suffix_length = p - suffix;
4608 if (p[0] == '%' && p[1] == 'O')
4611 /* We don't support extra suffix characters after %O. */
4612 if (*p == '.' || ISALNUM ((unsigned char) *p))
4613 fatal_error ("spec %qs has invalid %<%%0%c%>", spec, *p);
4614 if (suffix_length == 0)
4615 suffix = TARGET_OBJECT_SUFFIX;
4619 = XNEWVEC (char, suffix_length
4620 + strlen (TARGET_OBJECT_SUFFIX));
4621 strncpy (saved_suffix, suffix, suffix_length);
4622 strcpy (saved_suffix + suffix_length,
4623 TARGET_OBJECT_SUFFIX);
4625 suffix_length += strlen (TARGET_OBJECT_SUFFIX);
4628 if (compare_debug < 0)
4630 suffix = concat (".gk", suffix, NULL);
4634 /* If -save-temps=obj and -o were specified, use that for the
4636 if (save_temps_length)
4639 temp_filename_length
4640 = save_temps_length + suffix_length + 1;
4641 tmp = (char *) alloca (temp_filename_length);
4642 memcpy (tmp, save_temps_prefix, save_temps_length);
4643 memcpy (tmp + save_temps_length, suffix, suffix_length);
4644 tmp[save_temps_length + suffix_length] = '\0';
4645 temp_filename = save_string (tmp,
4646 temp_filename_length + 1);
4647 obstack_grow (&obstack, temp_filename,
4648 temp_filename_length);
4650 delete_this_arg = 0;
4654 /* If the gcc_input_filename has the same suffix specified
4655 for the %g, %u, or %U, and -save-temps is specified,
4656 we could end up using that file as an intermediate
4657 thus clobbering the user's source file (.e.g.,
4658 gcc -save-temps foo.s would clobber foo.s with the
4659 output of cpp0). So check for this condition and
4660 generate a temp file as the intermediate. */
4662 if (save_temps_flag)
4665 temp_filename_length = basename_length + suffix_length + 1;
4666 tmp = (char *) alloca (temp_filename_length);
4667 memcpy (tmp, input_basename, basename_length);
4668 memcpy (tmp + basename_length, suffix, suffix_length);
4669 tmp[basename_length + suffix_length] = '\0';
4670 temp_filename = tmp;
4672 if (strcmp (temp_filename, gcc_input_filename) != 0)
4674 #ifndef HOST_LACKS_INODE_NUMBERS
4675 struct stat st_temp;
4677 /* Note, set_input() resets input_stat_set to 0. */
4678 if (input_stat_set == 0)
4680 input_stat_set = stat (gcc_input_filename,
4682 if (input_stat_set >= 0)
4686 /* If we have the stat for the gcc_input_filename
4687 and we can do the stat for the temp_filename
4688 then the they could still refer to the same
4689 file if st_dev/st_ino's are the same. */
4690 if (input_stat_set != 1
4691 || stat (temp_filename, &st_temp) < 0
4692 || input_stat.st_dev != st_temp.st_dev
4693 || input_stat.st_ino != st_temp.st_ino)
4695 /* Just compare canonical pathnames. */
4696 char* input_realname = lrealpath (gcc_input_filename);
4697 char* temp_realname = lrealpath (temp_filename);
4698 bool files_differ = strcmp (input_realname, temp_realname);
4699 free (input_realname);
4700 free (temp_realname);
4704 temp_filename = save_string (temp_filename,
4705 temp_filename_length + 1);
4706 obstack_grow (&obstack, temp_filename,
4707 temp_filename_length);
4709 delete_this_arg = 0;
4715 /* See if we already have an association of %g/%u/%U and
4717 for (t = temp_names; t; t = t->next)
4718 if (t->length == suffix_length
4719 && strncmp (t->suffix, suffix, suffix_length) == 0
4720 && t->unique == (c == 'u' || c == 'U' || c == 'j'))
4723 /* Make a new association if needed. %u and %j
4725 if (t == 0 || c == 'u' || c == 'j')
4729 t = XNEW (struct temp_name);
4730 t->next = temp_names;
4733 t->length = suffix_length;
4736 t->suffix = saved_suffix;
4737 saved_suffix = NULL;
4740 t->suffix = save_string (suffix, suffix_length);
4741 t->unique = (c == 'u' || c == 'U' || c == 'j');
4742 temp_filename = make_temp_file (t->suffix);
4743 temp_filename_length = strlen (temp_filename);
4744 t->filename = temp_filename;
4745 t->filename_length = temp_filename_length;
4749 free (saved_suffix);
4751 obstack_grow (&obstack, t->filename, t->filename_length);
4752 delete_this_arg = 1;
4760 if (at_file_supplied)
4762 /* We are going to expand `%i' to `@FILE', where FILE
4763 is a newly-created temporary filename. The filenames
4764 that would usually be expanded in place of %o will be
4765 written to the temporary file. */
4770 for (i = 0; i < n_infiles; i++)
4771 if (compile_input_file_p (&infiles[i]))
4774 argv = (char **) alloca (sizeof (char *) * (n_files + 1));
4776 /* Copy the strings over. */
4777 for (i = 0, j = 0; i < n_infiles; i++)
4778 if (compile_input_file_p (&infiles[i]))
4780 argv[j] = CONST_CAST (char *, infiles[i].name);
4781 infiles[i].compiled = true;
4786 create_at_file (argv);
4789 for (i = 0; (int) i < n_infiles; i++)
4790 if (compile_input_file_p (&infiles[i]))
4792 store_arg (infiles[i].name, 0, 0);
4793 infiles[i].compiled = true;
4798 obstack_grow (&obstack, gcc_input_filename,
4799 input_filename_length);
4806 struct spec_path_info info;
4810 do_spec_1 ("-imultilib", 1, NULL);
4811 /* Make this a separate argument. */
4812 do_spec_1 (" ", 0, NULL);
4813 do_spec_1 (multilib_dir, 1, NULL);
4814 do_spec_1 (" ", 0, NULL);
4817 if (gcc_exec_prefix)
4819 do_spec_1 ("-iprefix", 1, NULL);
4820 /* Make this a separate argument. */
4821 do_spec_1 (" ", 0, NULL);
4822 do_spec_1 (gcc_exec_prefix, 1, NULL);
4823 do_spec_1 (" ", 0, NULL);
4826 if (target_system_root_changed ||
4827 (target_system_root && target_sysroot_hdrs_suffix))
4829 do_spec_1 ("-isysroot", 1, NULL);
4830 /* Make this a separate argument. */
4831 do_spec_1 (" ", 0, NULL);
4832 do_spec_1 (target_system_root, 1, NULL);
4833 if (target_sysroot_hdrs_suffix)
4834 do_spec_1 (target_sysroot_hdrs_suffix, 1, NULL);
4835 do_spec_1 (" ", 0, NULL);
4838 info.option = "-isystem";
4839 info.append = "include";
4840 info.append_len = strlen (info.append);
4841 info.omit_relative = false;
4842 info.separate_options = true;
4844 for_each_path (&include_prefixes, false, info.append_len,
4847 info.append = "include-fixed";
4848 if (*sysroot_hdrs_suffix_spec)
4849 info.append = concat (info.append, dir_separator_str,
4850 multilib_dir, NULL);
4851 info.append_len = strlen (info.append);
4852 for_each_path (&include_prefixes, false, info.append_len,
4859 int max = n_infiles;
4860 max += lang_specific_extra_outfiles;
4862 if (HAVE_GNU_LD && at_file_supplied)
4864 /* We are going to expand `%o' to `@FILE', where FILE
4865 is a newly-created temporary filename. The filenames
4866 that would usually be expanded in place of %o will be
4867 written to the temporary file. */
4872 /* Convert OUTFILES into a form suitable for writeargv. */
4874 /* Determine how many are non-NULL. */
4875 for (n_files = 0, i = 0; i < max; i++)
4876 n_files += outfiles[i] != NULL;
4878 argv = (char **) alloca (sizeof (char *) * (n_files + 1));
4880 /* Copy the strings over. */
4881 for (i = 0, j = 0; i < max; i++)
4884 argv[j] = CONST_CAST (char *, outfiles[i]);
4889 create_at_file (argv);
4892 for (i = 0; i < max; i++)
4894 store_arg (outfiles[i], 0, 0);
4899 obstack_grow (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX));
4904 this_is_library_file = 1;
4908 this_is_linker_script = 1;
4912 outfiles[input_file_number] = NULL;
4916 this_is_output_file = 1;
4921 unsigned int cur_index = VEC_length (const_char_p, argbuf);
4922 /* Handle the {...} following the %W. */
4924 fatal_error ("spec %qs has invalid %<%%W%c%>", spec, *p);
4925 p = handle_braces (p + 1);
4929 /* If any args were output, mark the last one for deletion
4931 if (VEC_length (const_char_p, argbuf) != cur_index)
4932 record_temp_file (VEC_last (const_char_p, argbuf), 0, 1);
4936 /* %x{OPTION} records OPTION for %X to output. */
4944 /* Skip past the option value and make a copy. */
4946 fatal_error ("spec %qs has invalid %<%%x%c%>", spec, *p);
4949 string = save_string (p1 + 1, p - p1 - 2);
4951 /* See if we already recorded this option. */
4952 FOR_EACH_VEC_ELT (char_p, linker_options, ix, opt)
4953 if (! strcmp (string, opt))
4959 /* This option is new; add it. */
4960 add_linker_option (string, strlen (string));
4964 /* Dump out the options accumulated previously using %x. */
4966 do_specs_vec (linker_options);
4969 /* Dump out the options accumulated previously using -Wa,. */
4971 do_specs_vec (assembler_options);
4974 /* Dump out the options accumulated previously using -Wp,. */
4976 do_specs_vec (preprocessor_options);
4979 /* Here are digits and numbers that just process
4980 a certain constant string as a spec. */
4983 value = do_spec_1 (cc1_spec, 0, NULL);
4989 value = do_spec_1 (cc1plus_spec, 0, NULL);
4995 value = do_spec_1 (asm_spec, 0, NULL);
5001 value = do_spec_1 (asm_final_spec, 0, NULL);
5008 const char *const spec
5009 = (input_file_compiler->cpp_spec
5010 ? input_file_compiler->cpp_spec
5012 value = do_spec_1 (spec, 0, NULL);
5019 value = do_spec_1 (endfile_spec, 0, NULL);
5025 value = do_spec_1 (link_spec, 0, NULL);
5031 value = do_spec_1 (lib_spec, 0, NULL);
5037 value = do_spec_1 (libgcc_spec, 0, NULL);
5043 /* We assume there is a directory
5044 separator at the end of this string. */
5045 if (target_system_root)
5047 obstack_grow (&obstack, target_system_root,
5048 strlen (target_system_root));
5049 if (target_sysroot_suffix)
5050 obstack_grow (&obstack, target_sysroot_suffix,
5051 strlen (target_sysroot_suffix));
5056 value = do_spec_1 (startfile_spec, 0, NULL);
5061 /* Here we define characters other than letters and digits. */
5064 p = handle_braces (p);
5070 p = handle_spec_function (p);
5076 obstack_1grow (&obstack, '%');
5083 while (p[len] && p[len] != ' ' && p[len] != '%')
5085 suffix_subst = save_string (p - 1, len + 1);
5090 /* Henceforth ignore the option(s) matching the pattern
5095 int have_wildcard = 0;
5098 while (p[len] && p[len] != ' ' && p[len] != '\t')
5101 if (p[len-1] == '*')
5104 for (i = 0; i < n_switches; i++)
5105 if (!strncmp (switches[i].part1, p, len - have_wildcard)
5106 && (have_wildcard || switches[i].part1[len] == '\0'))
5108 switches[i].live_cond |= SWITCH_IGNORE;
5109 switches[i].validated = 1;
5117 if (soft_matched_part)
5119 do_spec_1 (soft_matched_part, 1, NULL);
5120 do_spec_1 (" ", 0, NULL);
5123 /* Catch the case where a spec string contains something like
5124 '%{foo:%*}'. i.e. there is no * in the pattern on the left
5125 hand side of the :. */
5126 error ("spec failure: %<%%*%> has not been initialized by pattern match");
5129 /* Process a string found as the value of a spec given by name.
5130 This feature allows individual machine descriptions
5131 to add and use their own specs.
5132 %[...] modifies -D options the way %P does;
5133 %(...) uses the spec unmodified. */
5135 warning (0, "use of obsolete %%[ operator in specs");
5138 const char *name = p;
5139 struct spec_list *sl;
5142 /* The string after the S/P is the name of a spec that is to be
5144 while (*p && *p != ')' && *p != ']')
5147 /* See if it's in the list. */
5148 for (len = p - name, sl = specs; sl; sl = sl->next)
5149 if (sl->name_len == len && !strncmp (sl->name, name, len))
5151 name = *(sl->ptr_spec);
5153 fnotice (stderr, "Processing spec %c%s%c, which is '%s'\n",
5154 c, sl->name, (c == '(') ? ')' : ']', name);
5163 value = do_spec_1 (name, 0, NULL);
5169 char *x = (char *) alloca (strlen (name) * 2 + 1);
5171 const char *y = name;
5174 /* Copy all of NAME into BUF, but put __ after
5175 every -D and at the end of each arg. */
5178 if (! strncmp (y, "-D", 2))
5189 && (*y == ' ' || *y == '\t' || *y == '='
5190 || *y == '}' || *y == 0))
5203 value = do_spec_1 (buf, 0, NULL);
5209 /* Discard the closing paren or bracket. */
5216 error ("spec failure: unrecognized spec option %qc", c);
5222 /* Backslash: treat next character as ordinary. */
5227 /* Ordinary character: put it into the current argument. */
5228 obstack_1grow (&obstack, c);
5232 /* End of string. If we are processing a spec function, we need to
5233 end any pending argument. */
5234 if (processing_spec_function)
5240 /* Look up a spec function. */
5242 static const struct spec_function *
5243 lookup_spec_function (const char *name)
5245 const struct spec_function *sf;
5247 for (sf = static_spec_functions; sf->name != NULL; sf++)
5248 if (strcmp (sf->name, name) == 0)
5254 /* Evaluate a spec function. */
5257 eval_spec_function (const char *func, const char *args)
5259 const struct spec_function *sf;
5260 const char *funcval;
5262 /* Saved spec processing context. */
5263 VEC(const_char_p,heap) *save_argbuf;
5266 int save_delete_this_arg;
5267 int save_this_is_output_file;
5268 int save_this_is_library_file;
5269 int save_input_from_pipe;
5270 int save_this_is_linker_script;
5271 const char *save_suffix_subst;
5274 sf = lookup_spec_function (func);
5276 fatal_error ("unknown spec function %qs", func);
5278 /* Push the spec processing context. */
5279 save_argbuf = argbuf;
5281 save_arg_going = arg_going;
5282 save_delete_this_arg = delete_this_arg;
5283 save_this_is_output_file = this_is_output_file;
5284 save_this_is_library_file = this_is_library_file;
5285 save_this_is_linker_script = this_is_linker_script;
5286 save_input_from_pipe = input_from_pipe;
5287 save_suffix_subst = suffix_subst;
5289 /* Create a new spec processing context, and build the function
5293 if (do_spec_2 (args) < 0)
5294 fatal_error ("error in args to spec function %qs", func);
5296 /* argbuf_index is an index for the next argument to be inserted, and
5297 so contains the count of the args already inserted. */
5299 funcval = (*sf->func) (VEC_length (const_char_p, argbuf),
5300 VEC_address (const_char_p, argbuf));
5302 /* Pop the spec processing context. */
5303 VEC_free (const_char_p, heap, argbuf);
5304 argbuf = save_argbuf;
5306 arg_going = save_arg_going;
5307 delete_this_arg = save_delete_this_arg;
5308 this_is_output_file = save_this_is_output_file;
5309 this_is_library_file = save_this_is_library_file;
5310 this_is_linker_script = save_this_is_linker_script;
5311 input_from_pipe = save_input_from_pipe;
5312 suffix_subst = save_suffix_subst;
5317 /* Handle a spec function call of the form:
5321 ARGS is processed as a spec in a separate context and split into an
5322 argument vector in the normal fashion. The function returns a string
5323 containing a spec which we then process in the caller's context, or
5324 NULL if no processing is required. */
5327 handle_spec_function (const char *p)
5330 const char *endp, *funcval;
5333 processing_spec_function++;
5335 /* Get the function name. */
5336 for (endp = p; *endp != '\0'; endp++)
5338 if (*endp == '(') /* ) */
5340 /* Only allow [A-Za-z0-9], -, and _ in function names. */
5341 if (!ISALNUM (*endp) && !(*endp == '-' || *endp == '_'))
5342 fatal_error ("malformed spec function name");
5344 if (*endp != '(') /* ) */
5345 fatal_error ("no arguments for spec function");
5346 func = save_string (p, endp - p);
5349 /* Get the arguments. */
5350 for (count = 0; *endp != '\0'; endp++)
5359 else if (*endp == '(') /* ) */
5364 fatal_error ("malformed spec function arguments");
5365 args = save_string (p, endp - p);
5368 /* p now points to just past the end of the spec function expression. */
5370 funcval = eval_spec_function (func, args);
5371 if (funcval != NULL && do_spec_1 (funcval, 0, NULL) < 0)
5377 processing_spec_function--;
5382 /* Inline subroutine of handle_braces. Returns true if the current
5383 input suffix matches the atom bracketed by ATOM and END_ATOM. */
5385 input_suffix_matches (const char *atom, const char *end_atom)
5387 return (input_suffix
5388 && !strncmp (input_suffix, atom, end_atom - atom)
5389 && input_suffix[end_atom - atom] == '\0');
5392 /* Subroutine of handle_braces. Returns true if the current
5393 input file's spec name matches the atom bracketed by ATOM and END_ATOM. */
5395 input_spec_matches (const char *atom, const char *end_atom)
5397 return (input_file_compiler
5398 && input_file_compiler->suffix
5399 && input_file_compiler->suffix[0] != '\0'
5400 && !strncmp (input_file_compiler->suffix + 1, atom,
5402 && input_file_compiler->suffix[end_atom - atom + 1] == '\0');
5405 /* Subroutine of handle_braces. Returns true if a switch
5406 matching the atom bracketed by ATOM and END_ATOM appeared on the
5409 switch_matches (const char *atom, const char *end_atom, int starred)
5412 int len = end_atom - atom;
5413 int plen = starred ? len : -1;
5415 for (i = 0; i < n_switches; i++)
5416 if (!strncmp (switches[i].part1, atom, len)
5417 && (starred || switches[i].part1[len] == '\0')
5418 && check_live_switch (i, plen))
5424 /* Inline subroutine of handle_braces. Mark all of the switches which
5425 match ATOM (extends to END_ATOM; STARRED indicates whether there
5426 was a star after the atom) for later processing. */
5428 mark_matching_switches (const char *atom, const char *end_atom, int starred)
5431 int len = end_atom - atom;
5432 int plen = starred ? len : -1;
5434 for (i = 0; i < n_switches; i++)
5435 if (!strncmp (switches[i].part1, atom, len)
5436 && (starred || switches[i].part1[len] == '\0')
5437 && check_live_switch (i, plen))
5438 switches[i].ordering = 1;
5441 /* Inline subroutine of handle_braces. Process all the currently
5442 marked switches through give_switch, and clear the marks. */
5444 process_marked_switches (void)
5448 for (i = 0; i < n_switches; i++)
5449 if (switches[i].ordering == 1)
5451 switches[i].ordering = 0;
5456 /* Handle a %{ ... } construct. P points just inside the leading {.
5457 Returns a pointer one past the end of the brace block, or 0
5458 if we call do_spec_1 and that returns -1. */
5461 handle_braces (const char *p)
5463 const char *atom, *end_atom;
5464 const char *d_atom = NULL, *d_end_atom = NULL;
5465 const char *orig = p;
5473 bool a_must_be_last = false;
5474 bool ordered_set = false;
5475 bool disjunct_set = false;
5476 bool disj_matched = false;
5477 bool disj_starred = true;
5478 bool n_way_choice = false;
5479 bool n_way_matched = false;
5481 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
5488 /* Scan one "atom" (S in the description above of %{}, possibly
5489 with '!', '.', '@', ',', or '*' modifiers). */
5491 a_is_suffix = false;
5492 a_is_starred = false;
5493 a_is_negated = false;
5494 a_is_spectype = false;
5498 p++, a_is_negated = true;
5502 p++, a_is_suffix = true;
5504 p++, a_is_spectype = true;
5507 while (ISIDNUM(*p) || *p == '-' || *p == '+' || *p == '='
5508 || *p == ',' || *p == '.' || *p == '@')
5513 p++, a_is_starred = 1;
5519 /* Substitute the switch(es) indicated by the current atom. */
5521 if (disjunct_set || n_way_choice || a_is_negated || a_is_suffix
5522 || a_is_spectype || atom == end_atom)
5525 mark_matching_switches (atom, end_atom, a_is_starred);
5528 process_marked_switches ();
5532 /* Substitute some text if the current atom appears as a switch
5534 disjunct_set = true;
5538 if (atom == end_atom)
5540 if (!n_way_choice || disj_matched || *p == '|'
5541 || a_is_negated || a_is_suffix || a_is_spectype
5545 /* An empty term may appear as the last choice of an
5546 N-way choice set; it means "otherwise". */
5547 a_must_be_last = true;
5548 disj_matched = !n_way_matched;
5549 disj_starred = false;
5553 if ((a_is_suffix || a_is_spectype) && a_is_starred)
5557 disj_starred = false;
5559 /* Don't bother testing this atom if we already have a
5561 if (!disj_matched && !n_way_matched)
5564 a_matched = input_suffix_matches (atom, end_atom);
5565 else if (a_is_spectype)
5566 a_matched = input_spec_matches (atom, end_atom);
5568 a_matched = switch_matches (atom, end_atom, a_is_starred);
5570 if (a_matched != a_is_negated)
5572 disj_matched = true;
5574 d_end_atom = end_atom;
5581 /* Found the body, that is, the text to substitute if the
5582 current disjunction matches. */
5583 p = process_brace_body (p + 1, d_atom, d_end_atom, disj_starred,
5584 disj_matched && !n_way_matched);
5588 /* If we have an N-way choice, reset state for the next
5592 n_way_choice = true;
5593 n_way_matched |= disj_matched;
5594 disj_matched = false;
5595 disj_starred = true;
5596 d_atom = d_end_atom = NULL;
5605 while (*p++ != '}');
5610 fatal_error ("braced spec %qs is invalid at %qc", orig, *p);
5615 /* Subroutine of handle_braces. Scan and process a brace substitution body
5616 (X in the description of %{} syntax). P points one past the colon;
5617 ATOM and END_ATOM bracket the first atom which was found to be true
5618 (present) in the current disjunction; STARRED indicates whether all
5619 the atoms in the current disjunction were starred (for syntax validation);
5620 MATCHED indicates whether the disjunction matched or not, and therefore
5621 whether or not the body is to be processed through do_spec_1 or just
5622 skipped. Returns a pointer to the closing } or ;, or 0 if do_spec_1
5626 process_brace_body (const char *p, const char *atom, const char *end_atom,
5627 int starred, int matched)
5629 const char *body, *end_body;
5630 unsigned int nesting_level;
5631 bool have_subst = false;
5633 /* Locate the closing } or ;, honoring nested braces.
5634 Trim trailing whitespace. */
5643 if (!--nesting_level)
5646 else if (*p == ';' && nesting_level == 1)
5648 else if (*p == '%' && p[1] == '*' && nesting_level == 1)
5650 else if (*p == '\0')
5656 while (end_body[-1] == ' ' || end_body[-1] == '\t')
5659 if (have_subst && !starred)
5664 /* Copy the substitution body to permanent storage and execute it.
5665 If have_subst is false, this is a simple matter of running the
5666 body through do_spec_1... */
5667 char *string = save_string (body, end_body - body);
5670 if (do_spec_1 (string, 0, NULL) < 0)
5675 /* ... but if have_subst is true, we have to process the
5676 body once for each matching switch, with %* set to the
5677 variant part of the switch. */
5678 unsigned int hard_match_len = end_atom - atom;
5681 for (i = 0; i < n_switches; i++)
5682 if (!strncmp (switches[i].part1, atom, hard_match_len)
5683 && check_live_switch (i, hard_match_len))
5685 if (do_spec_1 (string, 0,
5686 &switches[i].part1[hard_match_len]) < 0)
5688 /* Pass any arguments this switch has. */
5690 suffix_subst = NULL;
5698 fatal_error ("braced spec body %qs is invalid", body);
5701 /* Return 0 iff switch number SWITCHNUM is obsoleted by a later switch
5702 on the command line. PREFIX_LENGTH is the length of XXX in an {XXX*}
5703 spec, or -1 if either exact match or %* is used.
5705 A -O switch is obsoleted by a later -O switch. A -f, -m, or -W switch
5706 whose value does not begin with "no-" is obsoleted by the same value
5707 with the "no-", similarly for a switch with the "no-" prefix. */
5710 check_live_switch (int switchnum, int prefix_length)
5712 const char *name = switches[switchnum].part1;
5715 /* If we already processed this switch and determined if it was
5716 live or not, return our past determination. */
5717 if (switches[switchnum].live_cond != 0)
5718 return ((switches[switchnum].live_cond & SWITCH_LIVE) != 0
5719 && (switches[switchnum].live_cond & SWITCH_FALSE) == 0
5720 && (switches[switchnum].live_cond & SWITCH_IGNORE_PERMANENTLY)
5723 /* In the common case of {<at-most-one-letter>*}, a negating
5724 switch would always match, so ignore that case. We will just
5725 send the conflicting switches to the compiler phase. */
5726 if (prefix_length >= 0 && prefix_length <= 1)
5729 /* Now search for duplicate in a manner that depends on the name. */
5733 for (i = switchnum + 1; i < n_switches; i++)
5734 if (switches[i].part1[0] == 'O')
5736 switches[switchnum].validated = 1;
5737 switches[switchnum].live_cond = SWITCH_FALSE;
5742 case 'W': case 'f': case 'm':
5743 if (! strncmp (name + 1, "no-", 3))
5745 /* We have Xno-YYY, search for XYYY. */
5746 for (i = switchnum + 1; i < n_switches; i++)
5747 if (switches[i].part1[0] == name[0]
5748 && ! strcmp (&switches[i].part1[1], &name[4]))
5750 switches[switchnum].validated = 1;
5751 switches[switchnum].live_cond = SWITCH_FALSE;
5757 /* We have XYYY, search for Xno-YYY. */
5758 for (i = switchnum + 1; i < n_switches; i++)
5759 if (switches[i].part1[0] == name[0]
5760 && switches[i].part1[1] == 'n'
5761 && switches[i].part1[2] == 'o'
5762 && switches[i].part1[3] == '-'
5763 && !strcmp (&switches[i].part1[4], &name[1]))
5765 switches[switchnum].validated = 1;
5766 switches[switchnum].live_cond = SWITCH_FALSE;
5773 /* Otherwise the switch is live. */
5774 switches[switchnum].live_cond |= SWITCH_LIVE;
5778 /* Pass a switch to the current accumulating command
5779 in the same form that we received it.
5780 SWITCHNUM identifies the switch; it is an index into
5781 the vector of switches gcc received, which is `switches'.
5782 This cannot fail since it never finishes a command line.
5784 If OMIT_FIRST_WORD is nonzero, then we omit .part1 of the argument. */
5787 give_switch (int switchnum, int omit_first_word)
5789 if ((switches[switchnum].live_cond & SWITCH_IGNORE) != 0)
5792 if (!omit_first_word)
5794 do_spec_1 ("-", 0, NULL);
5795 do_spec_1 (switches[switchnum].part1, 1, NULL);
5798 if (switches[switchnum].args != 0)
5801 for (p = switches[switchnum].args; *p; p++)
5803 const char *arg = *p;
5805 do_spec_1 (" ", 0, NULL);
5808 unsigned length = strlen (arg);
5811 while (length-- && !IS_DIR_SEPARATOR (arg[length]))
5812 if (arg[length] == '.')
5814 (CONST_CAST(char *, arg))[length] = 0;
5818 do_spec_1 (arg, 1, NULL);
5820 (CONST_CAST(char *, arg))[length] = '.';
5821 do_spec_1 (suffix_subst, 1, NULL);
5824 do_spec_1 (arg, 1, NULL);
5828 do_spec_1 (" ", 0, NULL);
5829 switches[switchnum].validated = 1;
5832 /* Search for a file named NAME trying various prefixes including the
5833 user's -B prefix and some standard ones.
5834 Return the absolute file name found. If nothing is found, return NAME. */
5837 find_file (const char *name)
5839 char *newname = find_a_file (&startfile_prefixes, name, R_OK, true);
5840 return newname ? newname : name;
5843 /* Determine whether a directory exists. If LINKER, return 0 for
5844 certain fixed names not needed by the linker. */
5847 is_directory (const char *path1, bool linker)
5854 /* Ensure the string ends with "/.". The resulting path will be a
5855 directory even if the given path is a symbolic link. */
5856 len1 = strlen (path1);
5857 path = (char *) alloca (3 + len1);
5858 memcpy (path, path1, len1);
5860 if (!IS_DIR_SEPARATOR (cp[-1]))
5861 *cp++ = DIR_SEPARATOR;
5865 /* Exclude directories that the linker is known to search. */
5867 && IS_DIR_SEPARATOR (path[0])
5869 && strncmp (path + 1, "lib", 3) == 0)
5871 && strncmp (path + 1, "usr", 3) == 0
5872 && IS_DIR_SEPARATOR (path[4])
5873 && strncmp (path + 5, "lib", 3) == 0)))
5876 return (stat (path, &st) >= 0 && S_ISDIR (st.st_mode));
5879 /* Set up the various global variables to indicate that we're processing
5880 the input file named FILENAME. */
5883 set_input (const char *filename)
5887 gcc_input_filename = filename;
5888 input_filename_length = strlen (gcc_input_filename);
5889 input_basename = lbasename (gcc_input_filename);
5891 /* Find a suffix starting with the last period,
5892 and set basename_length to exclude that suffix. */
5893 basename_length = strlen (input_basename);
5894 suffixed_basename_length = basename_length;
5895 p = input_basename + basename_length;
5896 while (p != input_basename && *p != '.')
5898 if (*p == '.' && p != input_basename)
5900 basename_length = p - input_basename;
5901 input_suffix = p + 1;
5906 /* If a spec for 'g', 'u', or 'U' is seen with -save-temps then
5907 we will need to do a stat on the gcc_input_filename. The
5908 INPUT_STAT_SET signals that the stat is needed. */
5912 /* On fatal signals, delete all the temporary files. */
5915 fatal_signal (int signum)
5917 signal (signum, SIG_DFL);
5918 delete_failure_queue ();
5919 delete_temp_files ();
5920 /* Get the same signal again, this time not handled,
5921 so its normal effect occurs. */
5922 kill (getpid (), signum);
5925 /* Compare the contents of the two files named CMPFILE[0] and
5926 CMPFILE[1]. Return zero if they're identical, nonzero
5930 compare_files (char *cmpfile[])
5933 FILE *temp[2] = { NULL, NULL };
5939 void *map[2] = { NULL, NULL };
5941 for (i = 0; i < 2; i++)
5945 if (stat (cmpfile[i], &st) < 0 || !S_ISREG (st.st_mode))
5947 error ("%s: could not determine length of compare-debug file %s",
5948 gcc_input_filename, cmpfile[i]);
5953 length[i] = st.st_size;
5956 if (!ret && length[0] != length[1])
5958 error ("%s: -fcompare-debug failure (length)", gcc_input_filename);
5963 for (i = 0; i < 2; i++)
5965 int fd = open (cmpfile[i], O_RDONLY);
5968 error ("%s: could not open compare-debug file %s",
5969 gcc_input_filename, cmpfile[i]);
5974 map[i] = mmap (NULL, length[i], PROT_READ, MAP_PRIVATE, fd, 0);
5977 if (map[i] == (void *) MAP_FAILED)
5986 if (memcmp (map[0], map[1], length[0]) != 0)
5988 error ("%s: -fcompare-debug failure", gcc_input_filename);
5993 for (i = 0; i < 2; i++)
5995 munmap ((caddr_t) map[i], length[i]);
6004 for (i = 0; i < 2; i++)
6006 temp[i] = fopen (cmpfile[i], "r");
6009 error ("%s: could not open compare-debug file %s",
6010 gcc_input_filename, cmpfile[i]);
6016 if (!ret && temp[0] && temp[1])
6020 c0 = fgetc (temp[0]);
6021 c1 = fgetc (temp[1]);
6025 error ("%s: -fcompare-debug failure",
6026 gcc_input_filename);
6035 for (i = 1; i >= 0; i--)
6044 extern int main (int, char **);
6047 main (int argc, char **argv)
6051 int linker_was_run = 0;
6052 int lang_n_infiles = 0;
6053 int num_linker_inputs = 0;
6054 char *explicit_link_files;
6056 char *lto_wrapper_file;
6058 struct user_specs *uptr;
6059 char **old_argv = argv;
6060 struct cl_decoded_option *decoded_options;
6061 unsigned int decoded_options_count;
6063 /* Initialize here, not in definition. The IRIX 6 O32 cc sometimes chokes
6064 on ?: in file-scope variable initializations. */
6065 asm_debug = ASM_DEBUG_SPEC;
6067 p = argv[0] + strlen (argv[0]);
6068 while (p != argv[0] && !IS_DIR_SEPARATOR (p[-1]))
6072 xmalloc_set_program_name (progname);
6074 expandargv (&argc, &argv);
6076 /* Determine if any expansions were made. */
6077 if (argv != old_argv)
6078 at_file_supplied = true;
6080 global_options = global_options_init;
6082 decode_cmdline_options_to_array (argc, CONST_CAST2 (const char **, char **,
6085 &decoded_options, &decoded_options_count);
6087 #ifdef GCC_DRIVER_HOST_INITIALIZATION
6088 /* Perform host dependent initialization when needed. */
6089 GCC_DRIVER_HOST_INITIALIZATION;
6092 /* Unlock the stdio streams. */
6093 unlock_std_streams ();
6095 gcc_init_libintl ();
6097 diagnostic_initialize (global_dc, 0);
6098 if (atexit (delete_temp_files) != 0)
6099 fatal_error ("atexit failed");
6101 if (signal (SIGINT, SIG_IGN) != SIG_IGN)
6102 signal (SIGINT, fatal_signal);
6104 if (signal (SIGHUP, SIG_IGN) != SIG_IGN)
6105 signal (SIGHUP, fatal_signal);
6107 if (signal (SIGTERM, SIG_IGN) != SIG_IGN)
6108 signal (SIGTERM, fatal_signal);
6110 if (signal (SIGPIPE, SIG_IGN) != SIG_IGN)
6111 signal (SIGPIPE, fatal_signal);
6114 /* We *MUST* set SIGCHLD to SIG_DFL so that the wait4() call will
6115 receive the signal. A different setting is inheritable */
6116 signal (SIGCHLD, SIG_DFL);
6119 /* Allocate the argument vector. */
6122 obstack_init (&obstack);
6124 /* Build multilib_select, et. al from the separate lines that make up each
6125 multilib selection. */
6127 const char *const *q = multilib_raw;
6130 obstack_init (&multilib_obstack);
6131 while ((p = *q++) != (char *) 0)
6132 obstack_grow (&multilib_obstack, p, strlen (p));
6134 obstack_1grow (&multilib_obstack, 0);
6135 multilib_select = XOBFINISH (&multilib_obstack, const char *);
6137 q = multilib_matches_raw;
6138 while ((p = *q++) != (char *) 0)
6139 obstack_grow (&multilib_obstack, p, strlen (p));
6141 obstack_1grow (&multilib_obstack, 0);
6142 multilib_matches = XOBFINISH (&multilib_obstack, const char *);
6144 q = multilib_exclusions_raw;
6145 while ((p = *q++) != (char *) 0)
6146 obstack_grow (&multilib_obstack, p, strlen (p));
6148 obstack_1grow (&multilib_obstack, 0);
6149 multilib_exclusions = XOBFINISH (&multilib_obstack, const char *);
6152 for (i = 0; i < ARRAY_SIZE (multilib_defaults_raw); i++)
6155 obstack_1grow (&multilib_obstack, ' ');
6156 obstack_grow (&multilib_obstack,
6157 multilib_defaults_raw[i],
6158 strlen (multilib_defaults_raw[i]));
6162 obstack_1grow (&multilib_obstack, 0);
6163 multilib_defaults = XOBFINISH (&multilib_obstack, const char *);
6166 #ifdef INIT_ENVIRONMENT
6167 /* Set up any other necessary machine specific environment variables. */
6168 xputenv (INIT_ENVIRONMENT);
6171 /* Make a table of what switches there are (switches, n_switches).
6172 Make a table of specified input files (infiles, n_infiles).
6173 Decode switches that are handled locally. */
6175 process_command (decoded_options_count, decoded_options);
6177 /* Initialize the vector of specs to just the default.
6178 This means one element containing 0s, as a terminator. */
6180 compilers = XNEWVAR (struct compiler, sizeof default_compilers);
6181 memcpy (compilers, default_compilers, sizeof default_compilers);
6182 n_compilers = n_default_compilers;
6184 /* Read specs from a file if there is one. */
6186 machine_suffix = concat (spec_machine, dir_separator_str,
6187 spec_version, dir_separator_str, NULL);
6188 just_machine_suffix = concat (spec_machine, dir_separator_str, NULL);
6190 specs_file = find_a_file (&startfile_prefixes, "specs", R_OK, true);
6191 /* Read the specs file unless it is a default one. */
6192 if (specs_file != 0 && strcmp (specs_file, "specs"))
6193 read_specs (specs_file, TRUE);
6197 /* We need to check standard_exec_prefix/just_machine_suffix/specs
6198 for any override of as, ld and libraries. */
6199 specs_file = (char *) alloca (strlen (standard_exec_prefix)
6200 + strlen (just_machine_suffix) + sizeof ("specs"));
6202 strcpy (specs_file, standard_exec_prefix);
6203 strcat (specs_file, just_machine_suffix);
6204 strcat (specs_file, "specs");
6205 if (access (specs_file, R_OK) == 0)
6206 read_specs (specs_file, TRUE);
6208 /* Process any configure-time defaults specified for the command line
6209 options, via OPTION_DEFAULT_SPECS. */
6210 for (i = 0; i < ARRAY_SIZE (option_default_specs); i++)
6211 do_option_spec (option_default_specs[i].name,
6212 option_default_specs[i].spec);
6214 /* Process DRIVER_SELF_SPECS, adding any new options to the end
6215 of the command line. */
6217 for (i = 0; i < ARRAY_SIZE (driver_self_specs); i++)
6218 do_self_spec (driver_self_specs[i]);
6222 enum save_temps save;
6224 if (!compare_debug_second)
6226 n_switches_debug_check[1] = n_switches;
6227 n_switches_alloc_debug_check[1] = n_switches_alloc;
6228 switches_debug_check[1] = XDUPVEC (struct switchstr, switches,
6231 do_self_spec ("%:compare-debug-self-opt()");
6232 n_switches_debug_check[0] = n_switches;
6233 n_switches_alloc_debug_check[0] = n_switches_alloc;
6234 switches_debug_check[0] = switches;
6236 n_switches = n_switches_debug_check[1];
6237 n_switches_alloc = n_switches_alloc_debug_check[1];
6238 switches = switches_debug_check[1];
6241 /* Avoid crash when computing %j in this early. */
6242 save = save_temps_flag;
6243 save_temps_flag = SAVE_TEMPS_NONE;
6245 compare_debug = -compare_debug;
6246 do_self_spec ("%:compare-debug-self-opt()");
6248 save_temps_flag = save;
6250 if (!compare_debug_second)
6252 n_switches_debug_check[1] = n_switches;
6253 n_switches_alloc_debug_check[1] = n_switches_alloc;
6254 switches_debug_check[1] = switches;
6255 compare_debug = -compare_debug;
6256 n_switches = n_switches_debug_check[0];
6257 n_switches_alloc = n_switches_debug_check[0];
6258 switches = switches_debug_check[0];
6262 /* If not cross-compiling, look for executables in the standard
6264 if (*cross_compile == '0')
6266 if (*md_exec_prefix)
6268 add_prefix (&exec_prefixes, md_exec_prefix, "GCC",
6269 PREFIX_PRIORITY_LAST, 0, 0);
6273 /* Process sysroot_suffix_spec. */
6274 if (*sysroot_suffix_spec != 0
6275 && do_spec_2 (sysroot_suffix_spec) == 0)
6277 if (VEC_length (const_char_p, argbuf) > 1)
6278 error ("spec failure: more than one arg to SYSROOT_SUFFIX_SPEC");
6279 else if (VEC_length (const_char_p, argbuf) == 1)
6280 target_sysroot_suffix = xstrdup (VEC_last (const_char_p, argbuf));
6283 #ifdef HAVE_LD_SYSROOT
6284 /* Pass the --sysroot option to the linker, if it supports that. If
6285 there is a sysroot_suffix_spec, it has already been processed by
6286 this point, so target_system_root really is the system root we
6288 if (target_system_root)
6290 obstack_grow (&obstack, "%(sysroot_spec) ", strlen ("%(sysroot_spec) "));
6291 obstack_grow0 (&obstack, link_spec, strlen (link_spec));
6292 set_spec ("link", XOBFINISH (&obstack, const char *));
6296 /* Process sysroot_hdrs_suffix_spec. */
6297 if (*sysroot_hdrs_suffix_spec != 0
6298 && do_spec_2 (sysroot_hdrs_suffix_spec) == 0)
6300 if (VEC_length (const_char_p, argbuf) > 1)
6301 error ("spec failure: more than one arg to SYSROOT_HEADERS_SUFFIX_SPEC");
6302 else if (VEC_length (const_char_p, argbuf) == 1)
6303 target_sysroot_hdrs_suffix = xstrdup (VEC_last (const_char_p, argbuf));
6306 /* Look for startfiles in the standard places. */
6307 if (*startfile_prefix_spec != 0
6308 && do_spec_2 (startfile_prefix_spec) == 0
6309 && do_spec_1 (" ", 0, NULL) == 0)
6313 FOR_EACH_VEC_ELT (const_char_p, argbuf, ndx, arg)
6314 add_sysrooted_prefix (&startfile_prefixes, arg, "BINUTILS",
6315 PREFIX_PRIORITY_LAST, 0, 1);
6317 /* We should eventually get rid of all these and stick to
6318 startfile_prefix_spec exclusively. */
6319 else if (*cross_compile == '0' || target_system_root)
6321 if (*md_startfile_prefix)
6322 add_sysrooted_prefix (&startfile_prefixes, md_startfile_prefix,
6323 "GCC", PREFIX_PRIORITY_LAST, 0, 1);
6325 if (*md_startfile_prefix_1)
6326 add_sysrooted_prefix (&startfile_prefixes, md_startfile_prefix_1,
6327 "GCC", PREFIX_PRIORITY_LAST, 0, 1);
6329 /* If standard_startfile_prefix is relative, base it on
6330 standard_exec_prefix. This lets us move the installed tree
6331 as a unit. If GCC_EXEC_PREFIX is defined, base
6332 standard_startfile_prefix on that as well.
6334 If the prefix is relative, only search it for native compilers;
6335 otherwise we will search a directory containing host libraries. */
6336 if (IS_ABSOLUTE_PATH (standard_startfile_prefix))
6337 add_sysrooted_prefix (&startfile_prefixes,
6338 standard_startfile_prefix, "BINUTILS",
6339 PREFIX_PRIORITY_LAST, 0, 1);
6340 else if (*cross_compile == '0')
6342 add_prefix (&startfile_prefixes,
6343 concat (gcc_exec_prefix
6344 ? gcc_exec_prefix : standard_exec_prefix,
6346 standard_startfile_prefix, NULL),
6347 NULL, PREFIX_PRIORITY_LAST, 0, 1);
6350 /* Sysrooted prefixes are relocated because target_system_root is
6351 also relocated by gcc_exec_prefix. */
6352 if (*standard_startfile_prefix_1)
6353 add_sysrooted_prefix (&startfile_prefixes,
6354 standard_startfile_prefix_1, "BINUTILS",
6355 PREFIX_PRIORITY_LAST, 0, 1);
6356 if (*standard_startfile_prefix_2)
6357 add_sysrooted_prefix (&startfile_prefixes,
6358 standard_startfile_prefix_2, "BINUTILS",
6359 PREFIX_PRIORITY_LAST, 0, 1);
6362 /* Process any user specified specs in the order given on the command
6364 for (uptr = user_specs_head; uptr; uptr = uptr->next)
6366 char *filename = find_a_file (&startfile_prefixes, uptr->filename,
6368 read_specs (filename ? filename : uptr->filename, FALSE);
6371 /* If we have a GCC_EXEC_PREFIX envvar, modify it for cpp's sake. */
6372 if (gcc_exec_prefix)
6373 gcc_exec_prefix = concat (gcc_exec_prefix, spec_machine, dir_separator_str,
6374 spec_version, dir_separator_str, NULL);
6376 /* Now we have the specs.
6377 Set the `valid' bits for switches that match anything in any spec. */
6379 validate_all_switches ();
6381 /* Now that we have the switches and the specs, set
6382 the subdirectory based on the options. */
6383 set_multilib_dir ();
6385 /* Set up to remember the pathname of gcc and any options
6386 needed for collect. We use argv[0] instead of progname because
6387 we need the complete pathname. */
6388 obstack_init (&collect_obstack);
6389 obstack_grow (&collect_obstack, "COLLECT_GCC=", sizeof ("COLLECT_GCC=") - 1);
6390 obstack_grow (&collect_obstack, argv[0], strlen (argv[0]) + 1);
6391 xputenv (XOBFINISH (&collect_obstack, char *));
6393 /* Set up to remember the pathname of the lto wrapper. */
6395 lto_wrapper_file = find_a_file (&exec_prefixes, "lto-wrapper", X_OK, false);
6396 if (lto_wrapper_file)
6398 lto_wrapper_spec = lto_wrapper_file;
6399 obstack_init (&collect_obstack);
6400 obstack_grow (&collect_obstack, "COLLECT_LTO_WRAPPER=",
6401 sizeof ("COLLECT_LTO_WRAPPER=") - 1);
6402 obstack_grow (&collect_obstack, lto_wrapper_spec,
6403 strlen (lto_wrapper_spec) + 1);
6404 xputenv (XOBFINISH (&collect_obstack, char *));
6407 /* Warn about any switches that no pass was interested in. */
6409 for (i = 0; (int) i < n_switches; i++)
6410 if (! switches[i].validated)
6411 error ("unrecognized option %<-%s%>", switches[i].part1);
6413 /* Obey some of the options. */
6415 if (print_search_dirs)
6417 printf (_("install: %s%s\n"),
6418 gcc_exec_prefix ? gcc_exec_prefix : standard_exec_prefix,
6419 gcc_exec_prefix ? "" : machine_suffix);
6420 printf (_("programs: %s\n"),
6421 build_search_list (&exec_prefixes, "", false, false));
6422 printf (_("libraries: %s\n"),
6423 build_search_list (&startfile_prefixes, "", false, true));
6427 if (print_file_name)
6429 printf ("%s\n", find_file (print_file_name));
6433 if (print_prog_name)
6435 char *newname = find_a_file (&exec_prefixes, print_prog_name, X_OK, 0);
6436 printf ("%s\n", (newname ? newname : print_prog_name));
6440 if (print_multi_lib)
6442 print_multilib_info ();
6446 if (print_multi_directory)
6448 if (multilib_dir == NULL)
6451 printf ("%s\n", multilib_dir);
6457 if (target_system_root)
6459 if (target_sysroot_suffix)
6460 printf ("%s%s\n", target_system_root, target_sysroot_suffix);
6462 printf ("%s\n", target_system_root);
6467 if (print_multi_os_directory)
6469 if (multilib_os_dir == NULL)
6472 printf ("%s\n", multilib_os_dir);
6476 if (print_sysroot_headers_suffix)
6478 if (*sysroot_hdrs_suffix_spec)
6480 printf("%s\n", (target_sysroot_hdrs_suffix
6481 ? target_sysroot_hdrs_suffix
6486 /* The error status indicates that only one set of fixed
6487 headers should be built. */
6488 fatal_error ("not configured with sysroot headers suffix");
6491 if (print_help_list)
6497 printf (_("\nFor bug reporting instructions, please see:\n"));
6498 printf ("%s.\n", bug_report_url);
6503 /* We do not exit here. Instead we have created a fake input file
6504 called 'help-dummy' which needs to be compiled, and we pass this
6505 on the various sub-processes, along with the --help switch.
6506 Ensure their output appears after ours. */
6507 fputc ('\n', stdout);
6513 printf (_("%s %s%s\n"), progname, pkgversion_string,
6515 printf ("Copyright %s 2010 Free Software Foundation, Inc.\n",
6517 fputs (_("This is free software; see the source for copying conditions. There is NO\n\
6518 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\n"),
6523 /* We do not exit here. We use the same mechanism of --help to print
6524 the version of the sub-processes. */
6525 fputc ('\n', stdout);
6534 fnotice (stderr, "Target: %s\n", spec_machine);
6535 fnotice (stderr, "Configured with: %s\n", configuration_arguments);
6537 #ifdef THREAD_MODEL_SPEC
6538 /* We could have defined THREAD_MODEL_SPEC to "%*" by default,
6539 but there's no point in doing all this processing just to get
6540 thread_model back. */
6541 obstack_init (&obstack);
6542 do_spec_1 (THREAD_MODEL_SPEC, 0, thread_model);
6543 obstack_1grow (&obstack, '\0');
6544 thrmod = XOBFINISH (&obstack, const char *);
6546 thrmod = thread_model;
6549 fnotice (stderr, "Thread model: %s\n", thrmod);
6551 /* compiler_version is truncated at the first space when initialized
6552 from version string, so truncate version_string at the first space
6553 before comparing. */
6554 for (n = 0; version_string[n]; n++)
6555 if (version_string[n] == ' ')
6558 if (! strncmp (version_string, compiler_version, n)
6559 && compiler_version[n] == 0)
6560 fnotice (stderr, "gcc version %s %s\n", version_string,
6563 fnotice (stderr, "gcc driver version %s %sexecuting gcc version %s\n",
6564 version_string, pkgversion_string, compiler_version);
6570 if (n_infiles == added_libraries)
6571 fatal_error ("no input files");
6573 /* Make a place to record the compiler output file names
6574 that correspond to the input files. */
6577 i += lang_specific_extra_outfiles;
6578 outfiles = XCNEWVEC (const char *, i);
6580 /* Record which files were specified explicitly as link input. */
6582 explicit_link_files = XCNEWVEC (char, n_infiles);
6584 combine_inputs = have_o || flag_wpa;
6586 for (i = 0; (int) i < n_infiles; i++)
6588 const char *name = infiles[i].name;
6589 struct compiler *compiler = lookup_compiler (name,
6591 infiles[i].language);
6593 if (compiler && !(compiler->combinable))
6594 combine_inputs = false;
6596 if (lang_n_infiles > 0 && compiler != input_file_compiler
6597 && infiles[i].language && infiles[i].language[0] != '*')
6598 infiles[i].incompiler = compiler;
6602 input_file_compiler = compiler;
6603 infiles[i].incompiler = compiler;
6607 /* Since there is no compiler for this input file, assume it is a
6609 explicit_link_files[i] = 1;
6610 infiles[i].incompiler = NULL;
6612 infiles[i].compiled = false;
6613 infiles[i].preprocessed = false;
6616 if (!combine_inputs && have_c && have_o && lang_n_infiles > 1)
6617 fatal_error ("cannot specify -o with -c, -S or -E with multiple files");
6619 for (i = 0; (int) i < n_infiles; i++)
6621 int this_file_error = 0;
6623 /* Tell do_spec what to substitute for %i. */
6625 input_file_number = i;
6626 set_input (infiles[i].name);
6628 if (infiles[i].compiled)
6631 /* Use the same thing in %o, unless cp->spec says otherwise. */
6633 outfiles[i] = gcc_input_filename;
6635 /* Figure out which compiler from the file's suffix. */
6638 = lookup_compiler (infiles[i].name, input_filename_length,
6639 infiles[i].language);
6641 if (input_file_compiler)
6643 /* Ok, we found an applicable compiler. Run its spec. */
6645 if (input_file_compiler->spec[0] == '#')
6647 error ("%s: %s compiler not installed on this system",
6648 gcc_input_filename, &input_file_compiler->spec[1]);
6649 this_file_error = 1;
6655 if (debug_check_temp_file[0])
6656 free (debug_check_temp_file[0]);
6657 debug_check_temp_file[0] = NULL;
6659 if (debug_check_temp_file[1])
6660 free (debug_check_temp_file[1]);
6661 debug_check_temp_file[1] = NULL;
6664 value = do_spec (input_file_compiler->spec);
6665 infiles[i].compiled = true;
6667 this_file_error = 1;
6668 else if (compare_debug && debug_check_temp_file[0])
6671 inform (0, "recompiling with -fcompare-debug");
6673 compare_debug = -compare_debug;
6674 n_switches = n_switches_debug_check[1];
6675 n_switches_alloc = n_switches_alloc_debug_check[1];
6676 switches = switches_debug_check[1];
6678 value = do_spec (input_file_compiler->spec);
6680 compare_debug = -compare_debug;
6681 n_switches = n_switches_debug_check[0];
6682 n_switches_alloc = n_switches_alloc_debug_check[0];
6683 switches = switches_debug_check[0];
6687 error ("during -fcompare-debug recompilation");
6688 this_file_error = 1;
6691 gcc_assert (debug_check_temp_file[1]
6692 && strcmp (debug_check_temp_file[0],
6693 debug_check_temp_file[1]));
6696 inform (0, "comparing final insns dumps");
6698 if (compare_files (debug_check_temp_file))
6699 this_file_error = 1;
6704 if (debug_check_temp_file[0])
6705 free (debug_check_temp_file[0]);
6706 debug_check_temp_file[0] = NULL;
6708 if (debug_check_temp_file[1])
6709 free (debug_check_temp_file[1]);
6710 debug_check_temp_file[1] = NULL;
6715 /* If this file's name does not contain a recognized suffix,
6716 record it as explicit linker input. */
6719 explicit_link_files[i] = 1;
6721 /* Clear the delete-on-failure queue, deleting the files in it
6722 if this compilation failed. */
6724 if (this_file_error)
6726 delete_failure_queue ();
6729 /* If this compilation succeeded, don't delete those files later. */
6730 clear_failure_queue ();
6733 /* Reset the input file name to the first compile/object file name, for use
6734 with %b in LINK_SPEC. We use the first input file that we can find
6735 a compiler to compile it instead of using infiles.language since for
6736 languages other than C we use aliases that we then lookup later. */
6741 for (i = 0; i < n_infiles ; i++)
6742 if (infiles[i].incompiler
6743 || (infiles[i].language && infiles[i].language[0] != '*'))
6745 set_input (infiles[i].name);
6752 /* Make sure INPUT_FILE_NUMBER points to first available open
6754 input_file_number = n_infiles;
6755 if (lang_specific_pre_link ())
6759 /* Determine if there are any linker input files. */
6760 num_linker_inputs = 0;
6761 for (i = 0; (int) i < n_infiles; i++)
6762 if (explicit_link_files[i] || outfiles[i] != NULL)
6763 num_linker_inputs++;
6765 /* Run ld to link all the compiler output files. */
6767 if (num_linker_inputs > 0 && !seen_error () && print_subprocess_help < 2)
6769 int tmp = execution_count;
6770 const char *fuse_linker_plugin = "fuse-linker-plugin";
6772 /* We'll use ld if we can't find collect2. */
6773 if (! strcmp (linker_name_spec, "collect2"))
6775 char *s = find_a_file (&exec_prefixes, "collect2", X_OK, false);
6777 linker_name_spec = "ld";
6780 if (switch_matches (fuse_linker_plugin,
6781 fuse_linker_plugin + strlen (fuse_linker_plugin), 0))
6783 linker_plugin_file_spec = find_a_file (&exec_prefixes,
6784 LTOPLUGINSONAME, R_OK,
6786 if (!linker_plugin_file_spec)
6787 fatal_error ("-fuse-linker-plugin, but " LTOPLUGINSONAME " not found");
6789 lto_gcc_spec = argv[0];
6791 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
6793 putenv_from_prefixes (&exec_prefixes, "COMPILER_PATH", false);
6794 putenv_from_prefixes (&startfile_prefixes, LIBRARY_PATH_ENV, true);
6796 if (print_subprocess_help == 1)
6798 printf (_("\nLinker options\n==============\n\n"));
6799 printf (_("Use \"-Wl,OPTION\" to pass \"OPTION\""
6800 " to the linker.\n\n"));
6803 value = do_spec (link_command_spec);
6806 linker_was_run = (tmp != execution_count);
6809 /* If options said don't run linker,
6810 complain about input files to be given to the linker. */
6812 if (! linker_was_run && !seen_error ())
6813 for (i = 0; (int) i < n_infiles; i++)
6814 if (explicit_link_files[i]
6815 && !(infiles[i].language && infiles[i].language[0] == '*'))
6816 warning (0, "%s: linker input file unused because linking not done",
6819 /* Delete some or all of the temporary files we made. */
6822 delete_failure_queue ();
6823 delete_temp_files ();
6825 if (print_help_list)
6827 printf (("\nFor bug reporting instructions, please see:\n"));
6828 printf ("%s\n", bug_report_url);
6831 return (signal_count != 0 ? 2
6832 : seen_error () ? (pass_exit_codes ? greatest_status : 1)
6836 /* Find the proper compilation spec for the file name NAME,
6837 whose length is LENGTH. LANGUAGE is the specified language,
6838 or 0 if this file is to be passed to the linker. */
6840 static struct compiler *
6841 lookup_compiler (const char *name, size_t length, const char *language)
6843 struct compiler *cp;
6845 /* If this was specified by the user to be a linker input, indicate that. */
6846 if (language != 0 && language[0] == '*')
6849 /* Otherwise, look for the language, if one is spec'd. */
6852 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6853 if (cp->suffix[0] == '@' && !strcmp (cp->suffix + 1, language))
6856 error ("language %s not recognized", language);
6860 /* Look for a suffix. */
6861 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6863 if (/* The suffix `-' matches only the file name `-'. */
6864 (!strcmp (cp->suffix, "-") && !strcmp (name, "-"))
6865 || (strlen (cp->suffix) < length
6866 /* See if the suffix matches the end of NAME. */
6867 && !strcmp (cp->suffix,
6868 name + length - strlen (cp->suffix))
6873 #if defined (OS2) ||defined (HAVE_DOS_BASED_FILE_SYSTEM)
6874 /* Look again, but case-insensitively this time. */
6876 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6878 if (/* The suffix `-' matches only the file name `-'. */
6879 (!strcmp (cp->suffix, "-") && !strcmp (name, "-"))
6880 || (strlen (cp->suffix) < length
6881 /* See if the suffix matches the end of NAME. */
6882 && ((!strcmp (cp->suffix,
6883 name + length - strlen (cp->suffix))
6884 || !strpbrk (cp->suffix, "ABCDEFGHIJKLMNOPQRSTUVWXYZ"))
6885 && !strcasecmp (cp->suffix,
6886 name + length - strlen (cp->suffix)))
6892 if (cp >= compilers)
6894 if (cp->spec[0] != '@')
6895 /* A non-alias entry: return it. */
6898 /* An alias entry maps a suffix to a language.
6899 Search for the language; pass 0 for NAME and LENGTH
6900 to avoid infinite recursion if language not found. */
6901 return lookup_compiler (NULL, 0, cp->spec + 1);
6907 save_string (const char *s, int len)
6909 char *result = XNEWVEC (char, len + 1);
6911 memcpy (result, s, len);
6917 pfatal_with_name (const char *name)
6919 perror_with_name (name);
6920 delete_temp_files ();
6925 perror_with_name (const char *name)
6927 error ("%s: %m", name);
6931 validate_switches_from_spec (const char *spec)
6933 const char *p = spec;
6936 if (c == '%' && (*p == '{' || *p == '<' || (*p == 'W' && *++p == '{')))
6937 /* We have a switch spec. */
6938 p = validate_switches (p + 1);
6942 validate_all_switches (void)
6944 struct compiler *comp;
6945 struct spec_list *spec;
6947 for (comp = compilers; comp->spec; comp++)
6948 validate_switches_from_spec (comp->spec);
6950 /* Look through the linked list of specs read from the specs file. */
6951 for (spec = specs; spec; spec = spec->next)
6952 validate_switches_from_spec (*spec->ptr_spec);
6954 validate_switches_from_spec (link_command_spec);
6957 /* Look at the switch-name that comes after START
6958 and mark as valid all supplied switches that match it. */
6961 validate_switches (const char *start)
6963 const char *p = start;
6967 bool suffix = false;
6968 bool starred = false;
6970 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
6979 if (*p == '.' || *p == ',')
6983 while (ISIDNUM (*p) || *p == '-' || *p == '+' || *p == '='
6984 || *p == ',' || *p == '.' || *p == '@')
6989 starred = true, p++;
6995 /* Mark all matching switches as valid. */
6996 for (i = 0; i < n_switches; i++)
6997 if (!strncmp (switches[i].part1, atom, len)
6998 && (starred || switches[i].part1[len] == 0))
6999 switches[i].validated = 1;
7003 if (*p && (p[-1] == '|' || p[-1] == '&'))
7006 if (*p && p[-1] == ':')
7008 while (*p && *p != ';' && *p != '}')
7013 if (*p == '{' || *p == '<')
7014 p = validate_switches (p+1);
7015 else if (p[0] == 'W' && p[1] == '{')
7016 p = validate_switches (p+2);
7023 if (*p && p[-1] == ';')
7037 static struct mdswitchstr *mdswitches;
7038 static int n_mdswitches;
7040 /* Check whether a particular argument was used. The first time we
7041 canonicalize the switches to keep only the ones we care about. */
7044 used_arg (const char *p, int len)
7049 const char *replace;
7054 static struct mswitchstr *mswitches;
7055 static int n_mswitches;
7060 struct mswitchstr *matches;
7064 /* Break multilib_matches into the component strings of string
7065 and replacement string. */
7066 for (q = multilib_matches; *q != '\0'; q++)
7071 = (struct mswitchstr *) alloca ((sizeof (struct mswitchstr)) * cnt);
7073 q = multilib_matches;
7082 fatal_error ("multilib spec %qs is invalid",
7087 matches[i].len = q - matches[i].str;
7089 matches[i].replace = ++q;
7090 while (*q != ';' && *q != '\0')
7093 goto invalid_matches;
7096 matches[i].rep_len = q - matches[i].replace;
7102 /* Now build a list of the replacement string for switches that we care
7103 about. Make sure we allocate at least one entry. This prevents
7104 xmalloc from calling fatal, and prevents us from re-executing this
7107 = XNEWVEC (struct mswitchstr, n_mdswitches + (n_switches ? n_switches : 1));
7108 for (i = 0; i < n_switches; i++)
7109 if ((switches[i].live_cond & SWITCH_IGNORE) == 0)
7111 int xlen = strlen (switches[i].part1);
7112 for (j = 0; j < cnt; j++)
7113 if (xlen == matches[j].len
7114 && ! strncmp (switches[i].part1, matches[j].str, xlen))
7116 mswitches[n_mswitches].str = matches[j].replace;
7117 mswitches[n_mswitches].len = matches[j].rep_len;
7118 mswitches[n_mswitches].replace = (char *) 0;
7119 mswitches[n_mswitches].rep_len = 0;
7125 /* Add MULTILIB_DEFAULTS switches too, as long as they were not present
7126 on the command line nor any options mutually incompatible with
7128 for (i = 0; i < n_mdswitches; i++)
7132 for (q = multilib_options; *q != '\0'; q++)
7138 while (strncmp (q, mdswitches[i].str, mdswitches[i].len) != 0
7139 || strchr (" /", q[mdswitches[i].len]) == NULL)
7141 while (*q != ' ' && *q != '/' && *q != '\0')
7148 if (*q != ' ' && *q != '\0')
7150 while (*r != ' ' && *r != '\0')
7153 while (*q != ' ' && *q != '/' && *q != '\0')
7156 if (used_arg (r, q - r))
7161 mswitches[n_mswitches].str = mdswitches[i].str;
7162 mswitches[n_mswitches].len = mdswitches[i].len;
7163 mswitches[n_mswitches].replace = (char *) 0;
7164 mswitches[n_mswitches].rep_len = 0;
7177 for (i = 0; i < n_mswitches; i++)
7178 if (len == mswitches[i].len && ! strncmp (p, mswitches[i].str, len))
7185 default_arg (const char *p, int len)
7189 for (i = 0; i < n_mdswitches; i++)
7190 if (len == mdswitches[i].len && ! strncmp (p, mdswitches[i].str, len))
7196 /* Work out the subdirectory to use based on the options. The format of
7197 multilib_select is a list of elements. Each element is a subdirectory
7198 name followed by a list of options followed by a semicolon. The format
7199 of multilib_exclusions is the same, but without the preceding
7200 directory. First gcc will check the exclusions, if none of the options
7201 beginning with an exclamation point are present, and all of the other
7202 options are present, then we will ignore this completely. Passing
7203 that, gcc will consider each multilib_select in turn using the same
7204 rules for matching the options. If a match is found, that subdirectory
7208 set_multilib_dir (void)
7211 unsigned int this_path_len;
7212 const char *this_path, *this_arg;
7213 const char *start, *end;
7215 int ok, ndfltok, first;
7218 start = multilib_defaults;
7219 while (*start == ' ' || *start == '\t')
7221 while (*start != '\0')
7224 while (*start != ' ' && *start != '\t' && *start != '\0')
7226 while (*start == ' ' || *start == '\t')
7234 mdswitches = XNEWVEC (struct mdswitchstr, n_mdswitches);
7235 for (start = multilib_defaults; *start != '\0'; start = end + 1)
7237 while (*start == ' ' || *start == '\t')
7243 for (end = start + 1;
7244 *end != ' ' && *end != '\t' && *end != '\0'; end++)
7247 obstack_grow (&multilib_obstack, start, end - start);
7248 obstack_1grow (&multilib_obstack, 0);
7249 mdswitches[i].str = XOBFINISH (&multilib_obstack, const char *);
7250 mdswitches[i++].len = end - start;
7257 p = multilib_exclusions;
7260 /* Ignore newlines. */
7267 /* Check the arguments. */
7274 fatal_error ("multilib exclusions %qs is invalid",
7275 multilib_exclusions);
7285 while (*p != ' ' && *p != ';')
7288 goto invalid_exclusions;
7292 if (*this_arg != '!')
7300 ok = used_arg (this_arg, p - this_arg);
7315 p = multilib_select;
7318 /* Ignore newlines. */
7325 /* Get the initial path. */
7332 fatal_error ("multilib select %qs is invalid",
7337 this_path_len = p - this_path;
7339 /* Check the arguments. */
7346 goto invalid_select;
7355 while (*p != ' ' && *p != ';')
7358 goto invalid_select;
7362 if (*this_arg != '!')
7370 /* If this is a default argument, we can just ignore it.
7371 This is true even if this_arg begins with '!'. Beginning
7372 with '!' does not mean that this argument is necessarily
7373 inappropriate for this library: it merely means that
7374 there is a more specific library which uses this
7375 argument. If this argument is a default, we need not
7376 consider that more specific library. */
7377 ok = used_arg (this_arg, p - this_arg);
7384 if (default_arg (this_arg, p - this_arg))
7393 if (this_path_len != 1
7394 || this_path[0] != '.')
7396 char *new_multilib_dir = XNEWVEC (char, this_path_len + 1);
7399 strncpy (new_multilib_dir, this_path, this_path_len);
7400 new_multilib_dir[this_path_len] = '\0';
7401 q = strchr (new_multilib_dir, ':');
7404 multilib_dir = new_multilib_dir;
7411 const char *q = this_path, *end = this_path + this_path_len;
7413 while (q < end && *q != ':')
7417 char *new_multilib_os_dir = XNEWVEC (char, end - q);
7418 memcpy (new_multilib_os_dir, q + 1, end - q - 1);
7419 new_multilib_os_dir[end - q - 1] = '\0';
7420 multilib_os_dir = new_multilib_os_dir;
7428 if (multilib_dir == NULL && multilib_os_dir != NULL
7429 && strcmp (multilib_os_dir, ".") == 0)
7431 free (CONST_CAST (char *, multilib_os_dir));
7432 multilib_os_dir = NULL;
7434 else if (multilib_dir != NULL && multilib_os_dir == NULL)
7435 multilib_os_dir = multilib_dir;
7438 /* Print out the multiple library subdirectory selection
7439 information. This prints out a series of lines. Each line looks
7440 like SUBDIRECTORY;@OPTION@OPTION, with as many options as is
7441 required. Only the desired options are printed out, the negative
7442 matches. The options are print without a leading dash. There are
7443 no spaces to make it easy to use the information in the shell.
7444 Each subdirectory is printed only once. This assumes the ordering
7445 generated by the genmultilib script. Also, we leave out ones that match
7449 print_multilib_info (void)
7451 const char *p = multilib_select;
7452 const char *last_path = 0, *this_path;
7454 unsigned int last_path_len = 0;
7459 /* Ignore newlines. */
7466 /* Get the initial path. */
7473 fatal_error ("multilib select %qs is invalid", multilib_select);
7479 /* When --disable-multilib was used but target defines
7480 MULTILIB_OSDIRNAMES, entries starting with .: are there just
7481 to find multilib_os_dir, so skip them from output. */
7482 if (this_path[0] == '.' && this_path[1] == ':')
7485 /* Check for matches with the multilib_exclusions. We don't bother
7486 with the '!' in either list. If any of the exclusion rules match
7487 all of its options with the select rule, we skip it. */
7489 const char *e = multilib_exclusions;
7490 const char *this_arg;
7495 /* Ignore newlines. */
7502 /* Check the arguments. */
7511 fatal_error ("multilib exclusion %qs is invalid",
7512 multilib_exclusions);
7523 while (*e != ' ' && *e != ';')
7526 goto invalid_exclusion;
7534 int len = e - this_arg;
7537 goto invalid_select;
7541 while (*q != ' ' && *q != ';')
7544 goto invalid_select;
7548 if (! strncmp (arg, this_arg,
7549 (len < q - arg) ? q - arg : len)
7550 || default_arg (this_arg, e - this_arg))
7580 /* If this is a duplicate, skip it. */
7581 skip = (last_path != 0
7582 && (unsigned int) (p - this_path) == last_path_len
7583 && ! strncmp (last_path, this_path, last_path_len));
7585 last_path = this_path;
7586 last_path_len = p - this_path;
7589 /* If this directory requires any default arguments, we can skip
7590 it. We will already have printed a directory identical to
7591 this one which does not require that default argument. */
7602 goto invalid_select;
7609 while (*q != ' ' && *q != ';')
7612 goto invalid_select;
7617 && default_arg (arg, q - arg))
7632 for (p1 = last_path; p1 < p && *p1 != ':'; p1++)
7643 goto invalid_select;
7651 use_arg = *p != '!';
7656 while (*p != ' ' && *p != ';')
7659 goto invalid_select;
7671 /* If there are extra options, print them now. */
7672 if (multilib_extra && *multilib_extra)
7674 int print_at = TRUE;
7677 for (q = multilib_extra; *q != '\0'; q++)
7698 /* getenv built-in spec function.
7700 Returns the value of the environment variable given by its first
7701 argument, concatenated with the second argument. If the
7702 environment variable is not defined, a fatal error is issued. */
7705 getenv_spec_function (int argc, const char **argv)
7715 value = getenv (argv[0]);
7717 fatal_error ("environment variable %qs not defined", argv[0]);
7719 /* We have to escape every character of the environment variable so
7720 they are not interpreted as active spec characters. A
7721 particularly painful case is when we are reading a variable
7722 holding a windows path complete with \ separators. */
7723 len = strlen (value) * 2 + strlen (argv[1]) + 1;
7724 result = XNEWVAR (char, len);
7725 for (ptr = result; *value; ptr += 2)
7731 strcpy (ptr, argv[1]);
7736 /* if-exists built-in spec function.
7738 Checks to see if the file specified by the absolute pathname in
7739 ARGS exists. Returns that pathname if found.
7741 The usual use for this function is to check for a library file
7742 (whose name has been expanded with %s). */
7745 if_exists_spec_function (int argc, const char **argv)
7747 /* Must have only one argument. */
7748 if (argc == 1 && IS_ABSOLUTE_PATH (argv[0]) && ! access (argv[0], R_OK))
7754 /* if-exists-else built-in spec function.
7756 This is like if-exists, but takes an additional argument which
7757 is returned if the first argument does not exist. */
7760 if_exists_else_spec_function (int argc, const char **argv)
7762 /* Must have exactly two arguments. */
7766 if (IS_ABSOLUTE_PATH (argv[0]) && ! access (argv[0], R_OK))
7772 /* replace-outfile built-in spec function.
7774 This looks for the first argument in the outfiles array's name and
7775 replaces it with the second argument. */
7778 replace_outfile_spec_function (int argc, const char **argv)
7781 /* Must have exactly two arguments. */
7785 for (i = 0; i < n_infiles; i++)
7787 if (outfiles[i] && !strcmp (outfiles[i], argv[0]))
7788 outfiles[i] = xstrdup (argv[1]);
7793 /* remove-outfile built-in spec function.
7795 * This looks for the first argument in the outfiles array's name and
7799 remove_outfile_spec_function (int argc, const char **argv)
7802 /* Must have exactly one argument. */
7806 for (i = 0; i < n_infiles; i++)
7808 if (outfiles[i] && !strcmp (outfiles[i], argv[0]))
7814 /* Given two version numbers, compares the two numbers.
7815 A version number must match the regular expression
7816 ([1-9][0-9]*|0)(\.([1-9][0-9]*|0))*
7819 compare_version_strings (const char *v1, const char *v2)
7824 if (regcomp (&r, "^([1-9][0-9]*|0)(\\.([1-9][0-9]*|0))*$",
7825 REG_EXTENDED | REG_NOSUB) != 0)
7827 rresult = regexec (&r, v1, 0, NULL, 0);
7828 if (rresult == REG_NOMATCH)
7829 fatal_error ("invalid version number %qs", v1);
7830 else if (rresult != 0)
7832 rresult = regexec (&r, v2, 0, NULL, 0);
7833 if (rresult == REG_NOMATCH)
7834 fatal_error ("invalid version number %qs", v2);
7835 else if (rresult != 0)
7838 return strverscmp (v1, v2);
7842 /* version_compare built-in spec function.
7844 This takes an argument of the following form:
7846 <comparison-op> <arg1> [<arg2>] <switch> <result>
7848 and produces "result" if the comparison evaluates to true,
7849 and nothing if it doesn't.
7851 The supported <comparison-op> values are:
7853 >= true if switch is a later (or same) version than arg1
7855 < true if switch is an earlier version than arg1
7857 >< true if switch is arg1 or later, and earlier than arg2
7858 <> true if switch is earlier than arg1 or is arg2 or later
7860 If the switch is not present, the condition is false unless
7861 the first character of the <comparison-op> is '!'.
7864 %:version-compare(>= 10.3 mmacosx-version-min= -lmx)
7865 adds -lmx if -mmacosx-version-min=10.3.9 was passed. */
7868 version_compare_spec_function (int argc, const char **argv)
7872 const char *switch_value = NULL;
7877 fatal_error ("too few arguments to %%:version-compare");
7878 if (argv[0][0] == '\0')
7880 if ((argv[0][1] == '<' || argv[0][1] == '>') && argv[0][0] != '!')
7882 if (argc != nargs + 3)
7883 fatal_error ("too many arguments to %%:version-compare");
7885 switch_len = strlen (argv[nargs + 1]);
7886 for (i = 0; i < n_switches; i++)
7887 if (!strncmp (switches[i].part1, argv[nargs + 1], switch_len)
7888 && check_live_switch (i, switch_len))
7889 switch_value = switches[i].part1 + switch_len;
7891 if (switch_value == NULL)
7895 comp1 = compare_version_strings (switch_value, argv[1]);
7897 comp2 = compare_version_strings (switch_value, argv[2]);
7899 comp2 = -1; /* This value unused. */
7902 switch (argv[0][0] << 8 | argv[0][1])
7904 case '>' << 8 | '=':
7905 result = comp1 >= 0;
7907 case '!' << 8 | '<':
7908 result = comp1 >= 0 || switch_value == NULL;
7913 case '!' << 8 | '>':
7914 result = comp1 < 0 || switch_value == NULL;
7916 case '>' << 8 | '<':
7917 result = comp1 >= 0 && comp2 < 0;
7919 case '<' << 8 | '>':
7920 result = comp1 < 0 || comp2 >= 0;
7924 fatal_error ("unknown operator %qs in %%:version-compare", argv[0]);
7929 return argv[nargs + 2];
7932 /* %:include builtin spec function. This differs from %include in that it
7933 can be nested inside a spec, and thus be conditionalized. It takes
7934 one argument, the filename, and looks for it in the startfile path.
7935 The result is always NULL, i.e. an empty expansion. */
7938 include_spec_function (int argc, const char **argv)
7945 file = find_a_file (&startfile_prefixes, argv[0], R_OK, true);
7946 read_specs (file ? file : argv[0], FALSE);
7951 /* %:find-file spec function. This function replaces its argument by
7952 the file found thru find_file, that is the -print-file-name gcc
7955 find_file_spec_function (int argc, const char **argv)
7962 file = find_file (argv[0]);
7967 /* %:find-plugindir spec function. This function replaces its argument
7968 by the -iplugindir=<dir> option. `dir' is found thru find_file, that
7969 is the -print-file-name gcc program option. */
7971 find_plugindir_spec_function (int argc, const char **argv ATTRIBUTE_UNUSED)
7978 option = concat ("-iplugindir=", find_file ("plugin"), NULL);
7983 /* %:print-asm-header spec function. Print a banner to say that the
7984 following output is from the assembler. */
7987 print_asm_header_spec_function (int arg ATTRIBUTE_UNUSED,
7988 const char **argv ATTRIBUTE_UNUSED)
7990 printf (_("Assembler options\n=================\n\n"));
7991 printf (_("Use \"-Wa,OPTION\" to pass \"OPTION\" to the assembler.\n\n"));
7996 /* Compute a timestamp to initialize flag_random_seed. */
7999 get_local_tick (void)
8003 /* Get some more or less random data. */
8004 #ifdef HAVE_GETTIMEOFDAY
8008 gettimeofday (&tv, NULL);
8009 ret = tv.tv_sec * 1000 + tv.tv_usec / 1000;
8013 time_t now = time (NULL);
8015 if (now != (time_t)-1)
8016 ret = (unsigned) now;
8023 /* %:compare-debug-dump-opt spec function. Save the last argument,
8024 expected to be the last -fdump-final-insns option, or generate a
8028 compare_debug_dump_opt_spec_function (int arg,
8029 const char **argv ATTRIBUTE_UNUSED)
8034 static char random_seed[HOST_BITS_PER_WIDE_INT / 4 + 3];
8037 fatal_error ("too many arguments to %%:compare-debug-dump-opt");
8039 do_spec_2 ("%{fdump-final-insns=*:%*}");
8040 do_spec_1 (" ", 0, NULL);
8042 if (VEC_length (const_char_p, argbuf) > 0
8043 && strcmp (argv[VEC_length (const_char_p, argbuf) - 1], "."))
8048 name = xstrdup (argv[VEC_length (const_char_p, argbuf) - 1]);
8053 const char *ext = NULL;
8055 if (VEC_length (const_char_p, argbuf) > 0)
8057 do_spec_2 ("%{o*:%*}%{!o:%{!S:%b%O}%{S:%b.s}}");
8060 else if (!compare_debug)
8063 do_spec_2 ("%g.gkd");
8065 do_spec_1 (" ", 0, NULL);
8067 gcc_assert (VEC_length (const_char_p, argbuf) > 0);
8069 name = concat (VEC_last (const_char_p, argbuf), ext, NULL);
8071 ret = concat ("-fdump-final-insns=", name, NULL);
8074 which = compare_debug < 0;
8075 debug_check_temp_file[which] = name;
8079 unsigned HOST_WIDE_INT value = get_local_tick () ^ getpid ();
8081 sprintf (random_seed, HOST_WIDE_INT_PRINT_HEX, value);
8085 ret = concat ("%{!frandom-seed=*:-frandom-seed=", random_seed, "} ",
8094 static const char *debug_auxbase_opt;
8096 /* %:compare-debug-self-opt spec function. Expands to the options
8097 that are to be passed in the second compilation of
8101 compare_debug_self_opt_spec_function (int arg,
8102 const char **argv ATTRIBUTE_UNUSED)
8105 fatal_error ("too many arguments to %%:compare-debug-self-opt");
8107 if (compare_debug >= 0)
8110 do_spec_2 ("%{c|S:%{o*:%*}}");
8111 do_spec_1 (" ", 0, NULL);
8113 if (VEC_length (const_char_p, argbuf) > 0)
8114 debug_auxbase_opt = concat ("-auxbase-strip ",
8115 VEC_last (const_char_p, argbuf),
8118 debug_auxbase_opt = NULL;
8121 %<o %<MD %<MMD %<MF* %<MG %<MP %<MQ* %<MT* \
8122 %<fdump-final-insns=* -w -S -o %j \
8123 %{!fcompare-debug-second:-fcompare-debug-second} \
8124 ", compare_debug_opt, NULL);
8127 /* %:compare-debug-auxbase-opt spec function. Expands to the auxbase
8128 options that are to be passed in the second compilation of
8129 compare-debug. It expects, as an argument, the basename of the
8130 current input file name, with the .gk suffix appended to it. */
8133 compare_debug_auxbase_opt_spec_function (int arg,
8140 fatal_error ("too few arguments to %%:compare-debug-auxbase-opt");
8143 fatal_error ("too many arguments to %%:compare-debug-auxbase-opt");
8145 if (compare_debug >= 0)
8148 len = strlen (argv[0]);
8149 if (len < 3 || strcmp (argv[0] + len - 3, ".gk") != 0)
8150 fatal_error ("argument to %%:compare-debug-auxbase-opt "
8151 "does not end in .gk");
8153 if (debug_auxbase_opt)
8154 return debug_auxbase_opt;
8156 #define OPT "-auxbase "
8159 name = (char*) xmalloc (sizeof (OPT) + len);
8160 memcpy (name, OPT, sizeof (OPT) - 1);
8161 memcpy (name + sizeof (OPT) - 1, argv[0], len);
8162 name[sizeof (OPT) - 1 + len] = '\0';
8169 /* %:pass-through-libs spec function. Finds all -l options and input
8170 file names in the lib spec passed to it, and makes a list of them
8171 prepended with the plugin option to cause them to be passed through
8172 to the final link after all the new object files have been added. */
8175 pass_through_libs_spec_func (int argc, const char **argv)
8177 char *prepended = xstrdup (" ");
8179 /* Shlemiel the painter's algorithm. Innately horrible, but at least
8180 we know that there will never be more than a handful of strings to
8181 concat, and it's only once per run, so it's not worth optimising. */
8182 for (n = 0; n < argc; n++)
8184 char *old = prepended;
8185 /* Anything that isn't an option is a full path to an output
8186 file; pass it through if it ends in '.a'. Among options,
8188 if (argv[n][0] == '-' && argv[n][1] == 'l')
8190 const char *lopt = argv[n] + 2;
8191 /* Handle both joined and non-joined -l options. If for any
8192 reason there's a trailing -l with no joined or following
8193 arg just discard it. */
8194 if (!*lopt && ++n >= argc)
8198 prepended = concat (prepended, "-plugin-opt=-pass-through=-l",
8201 else if (!strcmp (".a", argv[n] + strlen (argv[n]) - 2))
8203 prepended = concat (prepended, "-plugin-opt=-pass-through=",
8204 argv[n], " ", NULL);
8206 if (prepended != old)