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 */
39 #if ! defined( SIGCHLD ) && defined( SIGCLD )
40 # define SIGCHLD SIGCLD
47 #include "diagnostic.h"
52 # include <sys/mman.h>
54 /* This is on Solaris. */
55 # include <sys/types.h>
60 # define MAP_FAILED ((void *)-1)
63 /* By default there is no special suffix for target executables. */
64 /* FIXME: when autoconf is fixed, remove the host check - dj */
65 #if defined(TARGET_EXECUTABLE_SUFFIX) && defined(HOST_EXECUTABLE_SUFFIX)
66 #define HAVE_TARGET_EXECUTABLE_SUFFIX
69 /* By default there is no special suffix for host executables. */
70 #ifdef HOST_EXECUTABLE_SUFFIX
71 #define HAVE_HOST_EXECUTABLE_SUFFIX
73 #define HOST_EXECUTABLE_SUFFIX ""
76 /* By default, the suffix for target object files is ".o". */
77 #ifdef TARGET_OBJECT_SUFFIX
78 #define HAVE_TARGET_OBJECT_SUFFIX
80 #define TARGET_OBJECT_SUFFIX ".o"
83 static const char dir_separator_str[] = { DIR_SEPARATOR, 0 };
85 /* Most every one is fine with LIBRARY_PATH. For some, it conflicts. */
86 #ifndef LIBRARY_PATH_ENV
87 #define LIBRARY_PATH_ENV "LIBRARY_PATH"
91 #define kill(p,s) raise(s)
94 /* If a stage of compilation returns an exit status >= 1,
95 compilation of that file ceases. */
97 #define MIN_FATAL_STATUS 1
99 /* Flag set by cppspec.c to 1. */
102 /* Flag set to nonzero if an @file argument has been supplied to gcc. */
103 static bool at_file_supplied;
105 /* Definition of string containing the arguments given to configure. */
106 #include "configargs.h"
108 /* Flag saying to print the command line options understood by gcc and its
111 static int print_help_list;
113 /* Flag saying to print the version of gcc and its sub-processes. */
115 static int print_version;
117 /* Flag indicating whether we should ONLY print the command and
118 arguments (like verbose_flag) without executing the command.
119 Displayed arguments are quoted so that the generated command
120 line is suitable for execution. This is intended for use in
121 shell scripts to capture the driver-generated command line. */
122 static int verbose_only_flag;
124 /* Flag indicating how to print command line options of sub-processes. */
126 static int print_subprocess_help;
128 /* Whether we should report subprocess execution times to a file. */
130 FILE *report_times_to_file = NULL;
132 /* Nonzero means place this string before uses of /, so that include
133 and library files can be found in an alternate location. */
135 #ifdef TARGET_SYSTEM_ROOT
136 static const char *target_system_root = TARGET_SYSTEM_ROOT;
138 static const char *target_system_root = 0;
141 /* Nonzero means pass the updated target_system_root to the compiler. */
143 static int target_system_root_changed;
145 /* Nonzero means append this string to target_system_root. */
147 static const char *target_sysroot_suffix = 0;
149 /* Nonzero means append this string to target_system_root for headers. */
151 static const char *target_sysroot_hdrs_suffix = 0;
153 /* Nonzero means write "temp" files in source directory
154 and use the source file's name in them, and don't delete them. */
156 static enum save_temps {
157 SAVE_TEMPS_NONE, /* no -save-temps */
158 SAVE_TEMPS_CWD, /* -save-temps in current directory */
159 SAVE_TEMPS_OBJ /* -save-temps in object directory */
162 /* Output file to use to get the object directory for -save-temps=obj */
163 static char *save_temps_prefix = 0;
164 static size_t save_temps_length = 0;
166 /* The compiler version. */
168 static const char *compiler_version;
170 /* The target version. */
172 static const char *const spec_version = DEFAULT_TARGET_VERSION;
174 /* The target machine. */
176 static const char *spec_machine = DEFAULT_TARGET_MACHINE;
178 /* Nonzero if cross-compiling.
179 When -b is used, the value comes from the `specs' file. */
181 #ifdef CROSS_DIRECTORY_STRUCTURE
182 static const char *cross_compile = "1";
184 static const char *cross_compile = "0";
187 /* Greatest exit code of sub-processes that has been encountered up to
189 static int greatest_status = 1;
191 /* This is the obstack which we use to allocate many strings. */
193 static struct obstack obstack;
195 /* This is the obstack to build an environment variable to pass to
196 collect2 that describes all of the relevant switches of what to
197 pass the compiler in building the list of pointers to constructors
200 static struct obstack collect_obstack;
202 /* Forward declaration for prototypes. */
206 static void init_spec (void);
207 static void store_arg (const char *, int, int);
208 static void insert_wrapper (const char *);
209 static char *load_specs (const char *);
210 static void read_specs (const char *, int);
211 static void set_spec (const char *, const char *);
212 static struct compiler *lookup_compiler (const char *, size_t, const char *);
213 static char *build_search_list (const struct path_prefix *, const char *,
215 static void xputenv (const char *);
216 static void putenv_from_prefixes (const struct path_prefix *, const char *,
218 static int access_check (const char *, int);
219 static char *find_a_file (const struct path_prefix *, const char *, int, bool);
220 static void add_prefix (struct path_prefix *, const char *, const char *,
222 static void add_sysrooted_prefix (struct path_prefix *, const char *,
223 const char *, int, int, int);
224 static char *skip_whitespace (char *);
225 static void delete_if_ordinary (const char *);
226 static void delete_temp_files (void);
227 static void delete_failure_queue (void);
228 static void clear_failure_queue (void);
229 static int check_live_switch (int, int);
230 static const char *handle_braces (const char *);
231 static inline bool input_suffix_matches (const char *, const char *);
232 static inline bool switch_matches (const char *, const char *, int);
233 static inline void mark_matching_switches (const char *, const char *, int);
234 static inline void process_marked_switches (void);
235 static const char *process_brace_body (const char *, const char *, const char *, int, int);
236 static const struct spec_function *lookup_spec_function (const char *);
237 static const char *eval_spec_function (const char *, const char *);
238 static const char *handle_spec_function (const char *);
239 static char *save_string (const char *, int);
240 static void set_collect_gcc_options (void);
241 static int do_spec_1 (const char *, int, const char *);
242 static int do_spec_2 (const char *);
243 static void do_option_spec (const char *, const char *);
244 static void do_self_spec (const char *);
245 static const char *find_file (const char *);
246 static int is_directory (const char *, bool);
247 static const char *validate_switches (const char *);
248 static void validate_all_switches (void);
249 static inline void validate_switches_from_spec (const char *);
250 static void give_switch (int, int);
251 static int used_arg (const char *, int);
252 static int default_arg (const char *, int);
253 static void set_multilib_dir (void);
254 static void print_multilib_info (void);
255 static void perror_with_name (const char *);
256 static void display_help (void);
257 static void add_preprocessor_option (const char *, int);
258 static void add_assembler_option (const char *, int);
259 static void add_linker_option (const char *, int);
260 static void process_command (unsigned int, struct cl_decoded_option *);
261 static int execute (void);
262 static void alloc_args (void);
263 static void clear_args (void);
264 static void fatal_signal (int);
265 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
266 static void init_gcc_specs (struct obstack *, const char *, const char *,
269 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
270 static const char *convert_filename (const char *, int, int);
273 static const char *getenv_spec_function (int, const char **);
274 static const char *if_exists_spec_function (int, const char **);
275 static const char *if_exists_else_spec_function (int, const char **);
276 static const char *replace_outfile_spec_function (int, const char **);
277 static const char *remove_outfile_spec_function (int, const char **);
278 static const char *version_compare_spec_function (int, const char **);
279 static const char *include_spec_function (int, const char **);
280 static const char *find_file_spec_function (int, const char **);
281 static const char *find_plugindir_spec_function (int, const char **);
282 static const char *print_asm_header_spec_function (int, const char **);
283 static const char *compare_debug_dump_opt_spec_function (int, const char **);
284 static const char *compare_debug_self_opt_spec_function (int, const char **);
285 static const char *compare_debug_auxbase_opt_spec_function (int, const char **);
287 /* The Specs Language
289 Specs are strings containing lines, each of which (if not blank)
290 is made up of a program name, and arguments separated by spaces.
291 The program name must be exact and start from root, since no path
292 is searched and it is unreliable to depend on the current working directory.
293 Redirection of input or output is not supported; the subprograms must
294 accept filenames saying what files to read and write.
296 In addition, the specs can contain %-sequences to substitute variable text
297 or for conditional text. Here is a table of all defined %-sequences.
298 Note that spaces are not generated automatically around the results of
299 expanding these sequences; therefore, you can concatenate them together
300 or with constant text in a single argument.
302 %% substitute one % into the program name or argument.
303 %i substitute the name of the input file being processed.
304 %b substitute the basename of the input file being processed.
305 This is the substring up to (and not including) the last period
306 and not including the directory unless -save-temps was specified
307 to put temporaries in a different location.
308 %B same as %b, but include the file suffix (text after the last period).
310 substitute a file name that has suffix SUFFIX and is chosen
311 once per compilation, and mark the argument a la %d. To reduce
312 exposure to denial-of-service attacks, the file name is now
313 chosen in a way that is hard to predict even when previously
314 chosen file names are known. For example, `%g.s ... %g.o ... %g.s'
315 might turn into `ccUVUUAU.s ccXYAXZ12.o ccUVUUAU.s'. SUFFIX matches
316 the regexp "[.0-9A-Za-z]*%O"; "%O" is treated exactly as if it
317 had been pre-processed. Previously, %g was simply substituted
318 with a file name chosen once per compilation, without regard
319 to any appended suffix (which was therefore treated just like
320 ordinary text), making such attacks more likely to succeed.
322 like %g, but if -pipe is in effect, expands simply to "-".
324 like %g, but if -pipe is in effect, expands to nothing. (We have both
325 %| and %m to accommodate differences between system assemblers; see
326 the AS_NEEDS_DASH_FOR_PIPED_INPUT target macro.)
328 like %g, but generates a new temporary file name even if %uSUFFIX
331 substitutes the last file name generated with %uSUFFIX, generating a
332 new one if there is no such last file name. In the absence of any
333 %uSUFFIX, this is just like %gSUFFIX, except they don't share
334 the same suffix "space", so `%g.s ... %U.s ... %g.s ... %U.s'
335 would involve the generation of two distinct file names, one
336 for each `%g.s' and another for each `%U.s'. Previously, %U was
337 simply substituted with a file name chosen for the previous %u,
338 without regard to any appended suffix.
340 substitutes the name of the HOST_BIT_BUCKET, if any, and if it is
341 writable, and if save-temps is off; otherwise, substitute the name
342 of a temporary file, just like %u. This temporary file is not
343 meant for communication between processes, but rather as a junk
346 substitutes .SUFFIX for the suffixes of a matched switch's args when
347 it is subsequently output with %*. SUFFIX is terminated by the next
349 %d marks the argument containing or following the %d as a
350 temporary file name, so that that file will be deleted if GCC exits
351 successfully. Unlike %g, this contributes no text to the argument.
352 %w marks the argument containing or following the %w as the
353 "output file" of this compilation. This puts the argument
354 into the sequence of arguments that %o will substitute later.
355 %V indicates that this compilation produces no "output file".
357 like %{...} but mark last argument supplied within
358 as a file to be deleted on failure.
359 %o substitutes the names of all the output files, with spaces
360 automatically placed around them. You should write spaces
361 around the %o as well or the results are undefined.
362 %o is for use in the specs for running the linker.
363 Input files whose names have no recognized suffix are not compiled
364 at all, but they are included among the output files, so they will
366 %O substitutes the suffix for object files. Note that this is
367 handled specially when it immediately follows %g, %u, or %U
368 (with or without a suffix argument) because of the need for
369 those to form complete file names. The handling is such that
370 %O is treated exactly as if it had already been substituted,
371 except that %g, %u, and %U do not currently support additional
372 SUFFIX characters following %O as they would following, for
374 %I Substitute any of -iprefix (made from GCC_EXEC_PREFIX), -isysroot
375 (made from TARGET_SYSTEM_ROOT), -isystem (made from COMPILER_PATH
376 and -B options) and -imultilib as necessary.
377 %s current argument is the name of a library or startup file of some sort.
378 Search for that file in a standard list of directories
379 and substitute the full name found.
380 %eSTR Print STR as an error message. STR is terminated by a newline.
381 Use this when inconsistent options are detected.
382 %nSTR Print STR as a notice. STR is terminated by a newline.
383 %x{OPTION} Accumulate an option for %X.
384 %X Output the accumulated linker options specified by compilations.
385 %Y Output the accumulated assembler options specified by compilations.
386 %Z Output the accumulated preprocessor options specified by compilations.
387 %a process ASM_SPEC as a spec.
388 This allows config.h to specify part of the spec for running as.
389 %A process ASM_FINAL_SPEC as a spec. A capital A is actually
390 used here. This can be used to run a post-processor after the
391 assembler has done its job.
392 %D Dump out a -L option for each directory in startfile_prefixes.
393 If multilib_dir is set, extra entries are generated with it affixed.
394 %l process LINK_SPEC as a spec.
395 %L process LIB_SPEC as a spec.
396 %G process LIBGCC_SPEC as a spec.
397 %R Output the concatenation of target_system_root and
398 target_sysroot_suffix.
399 %S process STARTFILE_SPEC as a spec. A capital S is actually used here.
400 %E process ENDFILE_SPEC as a spec. A capital E is actually used here.
401 %C process CPP_SPEC as a spec.
402 %1 process CC1_SPEC as a spec.
403 %2 process CC1PLUS_SPEC as a spec.
404 %* substitute the variable part of a matched option. (See below.)
405 Note that each comma in the substituted string is replaced by
407 %<S remove all occurrences of -S from the command line.
408 Note - this command is position dependent. % commands in the
409 spec string before this one will see -S, % commands in the
410 spec string after this one will not.
411 %<S* remove all occurrences of all switches beginning with -S from the
414 Call the named function FUNCTION, passing it ARGS. ARGS is
415 first processed as a nested spec string, then split into an
416 argument vector in the usual fashion. The function returns
417 a string which is processed as if it had appeared literally
418 as part of the current spec.
419 %{S} substitutes the -S switch, if that switch was given to GCC.
420 If that switch was not specified, this substitutes nothing.
421 Here S is a metasyntactic variable.
422 %{S*} substitutes all the switches specified to GCC whose names start
423 with -S. This is used for -o, -I, etc; switches that take
424 arguments. GCC considers `-o foo' as being one switch whose
425 name starts with `o'. %{o*} would substitute this text,
426 including the space; thus, two arguments would be generated.
427 %{S*&T*} likewise, but preserve order of S and T options (the order
428 of S and T in the spec is not significant). Can be any number
429 of ampersand-separated variables; for each the wild card is
430 optional. Useful for CPP as %{D*&U*&A*}.
432 %{S:X} substitutes X, if the -S switch was given to GCC.
433 %{!S:X} substitutes X, if the -S switch was NOT given to GCC.
434 %{S*:X} substitutes X if one or more switches whose names start
435 with -S was given to GCC. Normally X is substituted only
436 once, no matter how many such switches appeared. However,
437 if %* appears somewhere in X, then X will be substituted
438 once for each matching switch, with the %* replaced by the
439 part of that switch that matched the '*'.
440 %{.S:X} substitutes X, if processing a file with suffix S.
441 %{!.S:X} substitutes X, if NOT processing a file with suffix S.
442 %{,S:X} substitutes X, if processing a file which will use spec S.
443 %{!,S:X} substitutes X, if NOT processing a file which will use spec S.
445 %{S|T:X} substitutes X if either -S or -T was given to GCC. This may be
446 combined with '!', '.', ',', and '*' as above binding stronger
448 If %* appears in X, all of the alternatives must be starred, and
449 only the first matching alternative is substituted.
450 %{S:X; if S was given to GCC, substitutes X;
451 T:Y; else if T was given to GCC, substitutes Y;
452 :D} else substitutes D. There can be as many clauses as you need.
453 This may be combined with '.', '!', ',', '|', and '*' as above.
455 %(Spec) processes a specification defined in a specs file as *Spec:
456 %[Spec] as above, but put __ around -D arguments
458 The conditional text X in a %{S:X} or similar construct may contain
459 other nested % constructs or spaces, or even newlines. They are
460 processed as usual, as described above. Trailing white space in X is
461 ignored. White space may also appear anywhere on the left side of the
462 colon in these constructs, except between . or * and the corresponding
465 The -O, -f, -m, and -W switches are handled specifically in these
466 constructs. If another value of -O or the negated form of a -f, -m, or
467 -W switch is found later in the command line, the earlier switch
468 value is ignored, except with {S*} where S is just one letter; this
469 passes all matching options.
471 The character | at the beginning of the predicate text is used to indicate
472 that a command should be piped to the following command, but only if -pipe
475 Note that it is built into GCC which switches take arguments and which
476 do not. You might think it would be useful to generalize this to
477 allow each compiler's spec to say which switches take arguments. But
478 this cannot be done in a consistent fashion. GCC cannot even decide
479 which input files have been specified without knowing which switches
480 take arguments, and it must know which input files to compile in order
481 to tell which compilers to run.
483 GCC also knows implicitly that arguments starting in `-l' are to be
484 treated as compiler output files, and passed to the linker in their
485 proper position among the other output files. */
487 /* Define the macros used for specs %a, %l, %L, %S, %C, %1. */
489 /* config.h can define ASM_SPEC to provide extra args to the assembler
490 or extra switch-translations. */
495 /* config.h can define ASM_FINAL_SPEC to run a post processor after
496 the assembler has run. */
497 #ifndef ASM_FINAL_SPEC
498 #define ASM_FINAL_SPEC ""
501 /* config.h can define CPP_SPEC to provide extra args to the C preprocessor
502 or extra switch-translations. */
507 /* config.h can define CC1_SPEC to provide extra args to cc1 and cc1plus
508 or extra switch-translations. */
513 /* config.h can define CC1PLUS_SPEC to provide extra args to cc1plus
514 or extra switch-translations. */
516 #define CC1PLUS_SPEC ""
519 /* config.h can define LINK_SPEC to provide extra args to the linker
520 or extra switch-translations. */
525 /* config.h can define LIB_SPEC to override the default libraries. */
527 #define LIB_SPEC "%{!shared:%{g*:-lg} %{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p}}"
532 /* XXX: valid only for GNU ld */
533 /* XXX: should exactly match hooks provided by libmudflap.a */
534 #define MFWRAP_SPEC " %{static: %{fmudflap|fmudflapth: \
535 --wrap=malloc --wrap=free --wrap=calloc --wrap=realloc\
536 --wrap=mmap --wrap=munmap --wrap=alloca\
537 } %{fmudflapth: --wrap=pthread_create\
538 }} %{fmudflap|fmudflapth: --wrap=main}"
541 #define MFLIB_SPEC "%{fmudflap|fmudflapth: -export-dynamic}"
544 /* When using -fsplit-stack we need to wrap pthread_create, in order
545 to initialize the stack guard. We always use wrapping, rather than
546 shared library ordering, and we keep the wrapper function in
547 libgcc. This is not yet a real spec, though it could become one;
548 it is currently just stuffed into LINK_SPEC. FIXME: This wrapping
549 only works with GNU ld and gold. FIXME: This is incompatible with
550 -fmudflap when linking statically, which wants to do its own
552 #define STACK_SPLIT_SPEC " %{fsplit-stack: --wrap=pthread_create}"
554 /* config.h can define LIBGCC_SPEC to override how and when libgcc.a is
557 #if defined(REAL_LIBGCC_SPEC)
558 #define LIBGCC_SPEC REAL_LIBGCC_SPEC
559 #elif defined(LINK_LIBGCC_SPECIAL_1)
560 /* Have gcc do the search for libgcc.a. */
561 #define LIBGCC_SPEC "libgcc.a%s"
563 #define LIBGCC_SPEC "-lgcc"
567 /* config.h can define STARTFILE_SPEC to override the default crt0 files. */
568 #ifndef STARTFILE_SPEC
569 #define STARTFILE_SPEC \
570 "%{!shared:%{pg:gcrt0%O%s}%{!pg:%{p:mcrt0%O%s}%{!p:crt0%O%s}}}"
573 /* config.h can define ENDFILE_SPEC to override the default crtn files. */
575 #define ENDFILE_SPEC ""
579 #define LINKER_NAME "collect2"
582 #ifdef HAVE_AS_DEBUG_PREFIX_MAP
583 #define ASM_MAP " %{fdebug-prefix-map=*:--debug-prefix-map %*}"
588 /* Define ASM_DEBUG_SPEC to be a spec suitable for translating '-g'
590 #ifndef ASM_DEBUG_SPEC
591 # if defined(DBX_DEBUGGING_INFO) && defined(DWARF2_DEBUGGING_INFO) \
592 && defined(HAVE_AS_GDWARF2_DEBUG_FLAG) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
593 # define ASM_DEBUG_SPEC \
594 (PREFERRED_DEBUGGING_TYPE == DBX_DEBUG \
595 ? "%{!g0:%{gdwarf-2*:--gdwarf2}%{!gdwarf-2*:%{g*:--gstabs}}}" ASM_MAP \
596 : "%{!g0:%{gstabs*:--gstabs}%{!gstabs*:%{g*:--gdwarf2}}}" ASM_MAP)
598 # if defined(DBX_DEBUGGING_INFO) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
599 # define ASM_DEBUG_SPEC "%{g*:%{!g0:--gstabs}}" ASM_MAP
601 # if defined(DWARF2_DEBUGGING_INFO) && defined(HAVE_AS_GDWARF2_DEBUG_FLAG)
602 # define ASM_DEBUG_SPEC "%{g*:%{!g0:--gdwarf2}}" ASM_MAP
606 #ifndef ASM_DEBUG_SPEC
607 # define ASM_DEBUG_SPEC ""
610 /* Here is the spec for running the linker, after compiling all files. */
612 /* This is overridable by the target in case they need to specify the
613 -lgcc and -lc order specially, yet not require them to override all
614 of LINK_COMMAND_SPEC. */
615 #ifndef LINK_GCC_C_SEQUENCE_SPEC
616 #define LINK_GCC_C_SEQUENCE_SPEC "%G %L %G"
619 #ifndef LINK_SSP_SPEC
620 #ifdef TARGET_LIBC_PROVIDES_SSP
621 #define LINK_SSP_SPEC "%{fstack-protector:}"
623 #define LINK_SSP_SPEC "%{fstack-protector|fstack-protector-all:-lssp_nonshared -lssp}"
627 #ifndef LINK_PIE_SPEC
629 #define LINK_PIE_SPEC "%{pie:-pie} "
631 #define LINK_PIE_SPEC "%{pie:} "
635 #ifndef LINK_BUILDID_SPEC
636 # if defined(HAVE_LD_BUILDID) && defined(ENABLE_LD_BUILDID)
637 # define LINK_BUILDID_SPEC "%{!r:--build-id} "
642 /* -u* was put back because both BSD and SysV seem to support it. */
643 /* %{static:} simply prevents an error message if the target machine
644 doesn't handle -static. */
645 /* We want %{T*} after %{L*} and %D so that it can be used to specify linker
646 scripts which exist in user specified directories, or in standard
648 /* We pass any -flto flags on to the linker, which is expected
649 to understand them. In practice, this means it had better be collect2. */
650 #ifndef LINK_COMMAND_SPEC
651 #define LINK_COMMAND_SPEC "\
652 %{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:\
654 %{fuse-linker-plugin: \
655 -plugin %(linker_plugin_file) \
656 -plugin-opt=%(lto_wrapper) \
657 -plugin-opt=-fresolution=%u.res \
658 %{static|static-libgcc:-plugin-opt=-pass-through=%(lto_libgcc)} \
659 %{static:-plugin-opt=-pass-through=-lc} \
661 %{flto*:%<fcompare-debug*} \
662 %{flto*} %l " LINK_PIE_SPEC \
663 "%X %{o*} %{A} %{d} %{e*} %{m} %{N} %{n} %{r}\
664 %{s} %{t} %{u*} %{z} %{Z} %{!A:%{!nostdlib:%{!nostartfiles:%S}}}\
665 %{static:} %{L*} %(mfwrap) %(link_libgcc) %o\
666 %{fopenmp|ftree-parallelize-loops=*:%:include(libgomp.spec)%(link_gomp)}\
667 %(mflib) " STACK_SPLIT_SPEC "\
668 %{fprofile-arcs|fprofile-generate*|coverage:-lgcov}\
669 %{!nostdlib:%{!nodefaultlibs:%(link_ssp) %(link_gcc_c_sequence)}}\
670 %{!A:%{!nostdlib:%{!nostartfiles:%E}}} %{T*} }}}}}}"
673 #ifndef LINK_LIBGCC_SPEC
674 /* Generate -L options for startfile prefix list. */
675 # define LINK_LIBGCC_SPEC "%D"
678 #ifndef STARTFILE_PREFIX_SPEC
679 # define STARTFILE_PREFIX_SPEC ""
683 # define SYSROOT_SPEC "--sysroot=%R"
686 #ifndef SYSROOT_SUFFIX_SPEC
687 # define SYSROOT_SUFFIX_SPEC ""
690 #ifndef SYSROOT_HEADERS_SUFFIX_SPEC
691 # define SYSROOT_HEADERS_SUFFIX_SPEC ""
694 static const char *asm_debug;
695 static const char *cpp_spec = CPP_SPEC;
696 static const char *cc1_spec = CC1_SPEC;
697 static const char *cc1plus_spec = CC1PLUS_SPEC;
698 static const char *link_gcc_c_sequence_spec = LINK_GCC_C_SEQUENCE_SPEC;
699 static const char *link_ssp_spec = LINK_SSP_SPEC;
700 static const char *asm_spec = ASM_SPEC;
701 static const char *asm_final_spec = ASM_FINAL_SPEC;
702 static const char *link_spec = LINK_SPEC;
703 static const char *lib_spec = LIB_SPEC;
704 static const char *mfwrap_spec = MFWRAP_SPEC;
705 static const char *mflib_spec = MFLIB_SPEC;
706 static const char *link_gomp_spec = "";
707 static const char *libgcc_spec = LIBGCC_SPEC;
708 static const char *endfile_spec = ENDFILE_SPEC;
709 static const char *startfile_spec = STARTFILE_SPEC;
710 static const char *linker_name_spec = LINKER_NAME;
711 static const char *linker_plugin_file_spec = "";
712 static const char *lto_wrapper_spec = "";
713 static const char *lto_gcc_spec = "";
714 static const char *lto_libgcc_spec = "";
715 static const char *link_command_spec = LINK_COMMAND_SPEC;
716 static const char *link_libgcc_spec = LINK_LIBGCC_SPEC;
717 static const char *startfile_prefix_spec = STARTFILE_PREFIX_SPEC;
718 static const char *sysroot_spec = SYSROOT_SPEC;
719 static const char *sysroot_suffix_spec = SYSROOT_SUFFIX_SPEC;
720 static const char *sysroot_hdrs_suffix_spec = SYSROOT_HEADERS_SUFFIX_SPEC;
722 /* Standard options to cpp, cc1, and as, to reduce duplication in specs.
723 There should be no need to override these in target dependent files,
724 but we need to copy them to the specs file so that newer versions
725 of the GCC driver can correctly drive older tool chains with the
726 appropriate -B options. */
728 /* When cpplib handles traditional preprocessing, get rid of this, and
729 call cc1 (or cc1obj in objc/lang-specs.h) from the main specs so
730 that we default the front end language better. */
731 static const char *trad_capable_cpp =
732 "cc1 -E %{traditional|ftraditional|traditional-cpp:-traditional-cpp}";
734 /* We don't wrap .d files in %W{} since a missing .d file, and
735 therefore no dependency entry, confuses make into thinking a .o
736 file that happens to exist is up-to-date. */
737 static const char *cpp_unique_options =
738 "%{!Q:-quiet} %{nostdinc*} %{C} %{CC} %{v} %{I*&F*} %{P} %I\
739 %{MD:-MD %{!o:%b.d}%{o*:%.d%*}}\
740 %{MMD:-MMD %{!o:%b.d}%{o*:%.d%*}}\
741 %{M} %{MM} %{MF*} %{MG} %{MP} %{MQ*} %{MT*}\
742 %{!E:%{!M:%{!MM:%{!MT:%{!MQ:%{MD|MMD:%{o*:-MQ %*}}}}}}}\
743 %{remap} %{g3|ggdb3|gstabs3|gcoff3|gxcoff3|gvms3:-dD}\
744 %{!iplugindir*:%{fplugin*:%:find-plugindir()}}\
745 %{H} %C %{D*&U*&A*} %{i*} %Z %i\
746 %{fmudflap:-D_MUDFLAP -include mf-runtime.h}\
747 %{fmudflapth:-D_MUDFLAP -D_MUDFLAPTH -include mf-runtime.h}\
750 /* This contains cpp options which are common with cc1_options and are passed
751 only when preprocessing only to avoid duplication. We pass the cc1 spec
752 options to the preprocessor so that it the cc1 spec may manipulate
753 options used to set target flags. Those special target flags settings may
754 in turn cause preprocessor symbols to be defined specially. */
755 static const char *cpp_options =
756 "%(cpp_unique_options) %1 %{m*} %{std*&ansi&trigraphs} %{W*&pedantic*} %{w}\
757 %{f*} %{g*:%{!g0:%{g*} %{!fno-working-directory:-fworking-directory}}} %{O*}\
758 %{undef} %{save-temps*:-fpch-preprocess}";
760 /* This contains cpp options which are not passed when the preprocessor
761 output will be used by another program. */
762 static const char *cpp_debug_options = "%{d*}";
764 /* NB: This is shared amongst all front-ends, except for Ada. */
765 static const char *cc1_options =
766 "%{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\
767 %{!iplugindir*:%{fplugin*:%:find-plugindir()}}\
768 %1 %{!Q:-quiet} %{!dumpbase:-dumpbase %B} %{d*} %{m*} %{aux-info*}\
769 %{fcompare-debug-second:%:compare-debug-auxbase-opt(%b)} \
770 %{!fcompare-debug-second:%{c|S:%{o*:-auxbase-strip %*}%{!o*:-auxbase %b}}}%{!c:%{!S:-auxbase %b}} \
771 %{g*} %{O*} %{W*&pedantic*} %{w} %{std*&ansi&trigraphs}\
772 %{v:-version} %{pg:-p} %{p} %{f*} %{undef}\
773 %{Qn:-fno-ident} %{-help:--help}\
774 %{-target-help:--target-help}\
775 %{-version:--version}\
776 %{-help=*:--help=%*}\
777 %{!fsyntax-only:%{S:%W{o*}%{!o*:-o %b.s}}}\
778 %{fsyntax-only:-o %j} %{-param*}\
779 %{fmudflap|fmudflapth:-fno-builtin -fno-merge-constants}\
780 %{coverage:-fprofile-arcs -ftest-coverage}";
782 static const char *asm_options =
783 "%{--target-help:%:print-asm-header()} "
785 /* If GNU AS is used, then convert -w (no warnings), -I, and -v
786 to the assembler equivalents. */
787 "%{v} %{w:-W} %{I*} "
789 "%a %Y %{c:%W{o*}%{!o*:-o %w%b%O}}%{!c:-o %d%w%u%O}";
791 static const char *invoke_as =
792 #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT
794 %{fcompare-debug=*|fdump-final-insns=*:%:compare-debug-dump-opt()}\
795 %{!S:-o %|.s |\n as %(asm_options) %|.s %A }\
799 %{fcompare-debug=*|fdump-final-insns=*:%:compare-debug-dump-opt()}\
800 %{!S:-o %|.s |\n as %(asm_options) %m.s %A }\
804 /* Some compilers have limits on line lengths, and the multilib_select
805 and/or multilib_matches strings can be very long, so we build them at
807 static struct obstack multilib_obstack;
808 static const char *multilib_select;
809 static const char *multilib_matches;
810 static const char *multilib_defaults;
811 static const char *multilib_exclusions;
813 /* Check whether a particular argument is a default argument. */
815 #ifndef MULTILIB_DEFAULTS
816 #define MULTILIB_DEFAULTS { "" }
819 static const char *const multilib_defaults_raw[] = MULTILIB_DEFAULTS;
821 #ifndef DRIVER_SELF_SPECS
822 #define DRIVER_SELF_SPECS ""
825 /* Adding -fopenmp should imply pthreads. This is particularly important
826 for targets that use different start files and suchlike. */
827 #ifndef GOMP_SELF_SPECS
828 #define GOMP_SELF_SPECS "%{fopenmp|ftree-parallelize-loops=*: -pthread}"
831 static const char *const driver_self_specs[] = {
832 "%{fdump-final-insns:-fdump-final-insns=.} %<fdump-final-insns",
833 DRIVER_SELF_SPECS, CONFIGURE_SPECS, GOMP_SELF_SPECS
836 #ifndef OPTION_DEFAULT_SPECS
837 #define OPTION_DEFAULT_SPECS { "", "" }
846 static const struct default_spec
847 option_default_specs[] = { OPTION_DEFAULT_SPECS };
851 struct user_specs *next;
852 const char *filename;
855 static struct user_specs *user_specs_head, *user_specs_tail;
858 /* Record the mapping from file suffixes for compilation specs. */
862 const char *suffix; /* Use this compiler for input files
863 whose names end in this suffix. */
865 const char *spec; /* To use this compiler, run this spec. */
867 const char *cpp_spec; /* If non-NULL, substitute this spec
868 for `%C', rather than the usual
870 const int combinable; /* If nonzero, compiler can deal with
871 multiple source files at once (IMA). */
872 const int needs_preprocessing; /* If nonzero, source files need to
873 be run through a preprocessor. */
876 /* Pointer to a vector of `struct compiler' that gives the spec for
877 compiling a file, based on its suffix.
878 A file that does not end in any of these suffixes will be passed
879 unchanged to the loader and nothing else will be done to it.
881 An entry containing two 0s is used to terminate the vector.
883 If multiple entries match a file, the last matching one is used. */
885 static struct compiler *compilers;
887 /* Number of entries in `compilers', not counting the null terminator. */
889 static int n_compilers;
891 /* The default list of file name suffixes and their compilation specs. */
893 static const struct compiler default_compilers[] =
895 /* Add lists of suffixes of known languages here. If those languages
896 were not present when we built the driver, we will hit these copies
897 and be given a more meaningful error than "file not used since
898 linking is not done". */
899 {".m", "#Objective-C", 0, 0, 0}, {".mi", "#Objective-C", 0, 0, 0},
900 {".mm", "#Objective-C++", 0, 0, 0}, {".M", "#Objective-C++", 0, 0, 0},
901 {".mii", "#Objective-C++", 0, 0, 0},
902 {".cc", "#C++", 0, 0, 0}, {".cxx", "#C++", 0, 0, 0},
903 {".cpp", "#C++", 0, 0, 0}, {".cp", "#C++", 0, 0, 0},
904 {".c++", "#C++", 0, 0, 0}, {".C", "#C++", 0, 0, 0},
905 {".CPP", "#C++", 0, 0, 0}, {".ii", "#C++", 0, 0, 0},
906 {".ads", "#Ada", 0, 0, 0}, {".adb", "#Ada", 0, 0, 0},
907 {".f", "#Fortran", 0, 0, 0}, {".F", "#Fortran", 0, 0, 0},
908 {".for", "#Fortran", 0, 0, 0}, {".FOR", "#Fortran", 0, 0, 0},
909 {".ftn", "#Fortran", 0, 0, 0}, {".FTN", "#Fortran", 0, 0, 0},
910 {".fpp", "#Fortran", 0, 0, 0}, {".FPP", "#Fortran", 0, 0, 0},
911 {".f90", "#Fortran", 0, 0, 0}, {".F90", "#Fortran", 0, 0, 0},
912 {".f95", "#Fortran", 0, 0, 0}, {".F95", "#Fortran", 0, 0, 0},
913 {".f03", "#Fortran", 0, 0, 0}, {".F03", "#Fortran", 0, 0, 0},
914 {".f08", "#Fortran", 0, 0, 0}, {".F08", "#Fortran", 0, 0, 0},
915 {".r", "#Ratfor", 0, 0, 0},
916 {".p", "#Pascal", 0, 0, 0}, {".pas", "#Pascal", 0, 0, 0},
917 {".java", "#Java", 0, 0, 0}, {".class", "#Java", 0, 0, 0},
918 {".zip", "#Java", 0, 0, 0}, {".jar", "#Java", 0, 0, 0},
919 /* Next come the entries for C. */
920 {".c", "@c", 0, 0, 1},
922 /* cc1 has an integrated ISO C preprocessor. We should invoke the
923 external preprocessor if -save-temps is given. */
924 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\
926 %{traditional|ftraditional:\
927 %eGNU C no longer supports -traditional without -E}\
928 %{save-temps*|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
929 %(cpp_options) -o %{save-temps*:%b.i} %{!save-temps*:%g.i} \n\
930 cc1 -fpreprocessed %{save-temps*:%b.i} %{!save-temps*:%g.i} \
932 %{!save-temps*:%{!traditional-cpp:%{!no-integrated-cpp:\
933 cc1 %(cpp_unique_options) %(cc1_options)}}}\
934 %{!fsyntax-only:%(invoke_as)}}}}", 0, 0, 1},
936 "%{!E:%e-E or -x required when input is from standard input}\
937 %(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)", 0, 0, 0},
938 {".h", "@c-header", 0, 0, 0},
940 /* cc1 has an integrated ISO C preprocessor. We should invoke the
941 external preprocessor if -save-temps is given. */
942 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\
944 %{save-temps*|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
945 %(cpp_options) -o %{save-temps*:%b.i} %{!save-temps*:%g.i} \n\
946 cc1 -fpreprocessed %{save-temps*:%b.i} %{!save-temps*:%g.i} \
948 %{!fdump-ada-spec*:-o %g.s %{!o*:--output-pch=%i.gch}\
949 %W{o*:--output-pch=%*}}%V}\
950 %{!save-temps*:%{!traditional-cpp:%{!no-integrated-cpp:\
951 cc1 %(cpp_unique_options) %(cc1_options)\
952 %{!fdump-ada-spec*:-o %g.s %{!o*:--output-pch=%i.gch}\
953 %W{o*:--output-pch=%*}}%V}}}}}}", 0, 0, 0},
954 {".i", "@cpp-output", 0, 0, 0},
956 "%{!M:%{!MM:%{!E:cc1 -fpreprocessed %i %(cc1_options) %{!fsyntax-only:%(invoke_as)}}}}", 0, 1, 0},
957 {".s", "@assembler", 0, 1, 0},
959 "%{!M:%{!MM:%{!E:%{!S:as %(asm_debug) %(asm_options) %i %A }}}}", 0, 1, 0},
960 {".sx", "@assembler-with-cpp", 0, 1, 0},
961 {".S", "@assembler-with-cpp", 0, 1, 0},
962 {"@assembler-with-cpp",
963 #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT
964 "%(trad_capable_cpp) -lang-asm %(cpp_options) -fno-directives-only\
965 %{E|M|MM:%(cpp_debug_options)}\
966 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\
967 as %(asm_debug) %(asm_options) %|.s %A }}}}"
969 "%(trad_capable_cpp) -lang-asm %(cpp_options) -fno-directives-only\
970 %{E|M|MM:%(cpp_debug_options)}\
971 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\
972 as %(asm_debug) %(asm_options) %m.s %A }}}}"
977 /* Mark end of table. */
981 /* Number of elements in default_compilers, not counting the terminator. */
983 static const int n_default_compilers = ARRAY_SIZE (default_compilers) - 1;
985 /* A vector of options to give to the linker.
986 These options are accumulated by %x,
987 and substituted into the linker command with %X. */
988 static int n_linker_options;
989 static char **linker_options;
991 /* A vector of options to give to the assembler.
992 These options are accumulated by -Wa,
993 and substituted into the assembler command with %Y. */
994 static int n_assembler_options;
995 static char **assembler_options;
997 /* A vector of options to give to the preprocessor.
998 These options are accumulated by -Wp,
999 and substituted into the preprocessor command with %Z. */
1000 static int n_preprocessor_options;
1001 static char **preprocessor_options;
1004 skip_whitespace (char *p)
1008 /* A fully-blank line is a delimiter in the SPEC file and shouldn't
1009 be considered whitespace. */
1010 if (p[0] == '\n' && p[1] == '\n' && p[2] == '\n')
1012 else if (*p == '\n' || *p == ' ' || *p == '\t')
1026 /* Structures to keep track of prefixes to try when looking for files. */
1030 const char *prefix; /* String to prepend to the path. */
1031 struct prefix_list *next; /* Next in linked list. */
1032 int require_machine_suffix; /* Don't use without machine_suffix. */
1033 /* 2 means try both machine_suffix and just_machine_suffix. */
1034 int priority; /* Sort key - priority within list. */
1035 int os_multilib; /* 1 if OS multilib scheme should be used,
1036 0 for GCC multilib scheme. */
1041 struct prefix_list *plist; /* List of prefixes to try */
1042 int max_len; /* Max length of a prefix in PLIST */
1043 const char *name; /* Name of this list (used in config stuff) */
1046 /* List of prefixes to try when looking for executables. */
1048 static struct path_prefix exec_prefixes = { 0, 0, "exec" };
1050 /* List of prefixes to try when looking for startup (crt0) files. */
1052 static struct path_prefix startfile_prefixes = { 0, 0, "startfile" };
1054 /* List of prefixes to try when looking for include files. */
1056 static struct path_prefix include_prefixes = { 0, 0, "include" };
1058 /* Suffix to attach to directories searched for commands.
1059 This looks like `MACHINE/VERSION/'. */
1061 static const char *machine_suffix = 0;
1063 /* Suffix to attach to directories searched for commands.
1064 This is just `MACHINE/'. */
1066 static const char *just_machine_suffix = 0;
1068 /* Adjusted value of GCC_EXEC_PREFIX envvar. */
1070 static const char *gcc_exec_prefix;
1072 /* Adjusted value of standard_libexec_prefix. */
1074 static const char *gcc_libexec_prefix;
1076 /* Default prefixes to attach to command names. */
1078 #ifndef STANDARD_STARTFILE_PREFIX_1
1079 #define STANDARD_STARTFILE_PREFIX_1 "/lib/"
1081 #ifndef STANDARD_STARTFILE_PREFIX_2
1082 #define STANDARD_STARTFILE_PREFIX_2 "/usr/lib/"
1085 #ifdef CROSS_DIRECTORY_STRUCTURE /* Don't use these prefixes for a cross compiler. */
1086 #undef MD_EXEC_PREFIX
1087 #undef MD_STARTFILE_PREFIX
1088 #undef MD_STARTFILE_PREFIX_1
1091 /* If no prefixes defined, use the null string, which will disable them. */
1092 #ifndef MD_EXEC_PREFIX
1093 #define MD_EXEC_PREFIX ""
1095 #ifndef MD_STARTFILE_PREFIX
1096 #define MD_STARTFILE_PREFIX ""
1098 #ifndef MD_STARTFILE_PREFIX_1
1099 #define MD_STARTFILE_PREFIX_1 ""
1102 /* These directories are locations set at configure-time based on the
1103 --prefix option provided to configure. Their initializers are
1104 defined in Makefile.in. These paths are not *directly* used when
1105 gcc_exec_prefix is set because, in that case, we know where the
1106 compiler has been installed, and use paths relative to that
1107 location instead. */
1108 static const char *const standard_exec_prefix = STANDARD_EXEC_PREFIX;
1109 static const char *const standard_libexec_prefix = STANDARD_LIBEXEC_PREFIX;
1110 static const char *const standard_bindir_prefix = STANDARD_BINDIR_PREFIX;
1111 static const char *const standard_startfile_prefix = STANDARD_STARTFILE_PREFIX;
1113 /* For native compilers, these are well-known paths containing
1114 components that may be provided by the system. For cross
1115 compilers, these paths are not used. */
1116 static const char *md_exec_prefix = MD_EXEC_PREFIX;
1117 static const char *md_startfile_prefix = MD_STARTFILE_PREFIX;
1118 static const char *md_startfile_prefix_1 = MD_STARTFILE_PREFIX_1;
1119 static const char *const standard_startfile_prefix_1
1120 = STANDARD_STARTFILE_PREFIX_1;
1121 static const char *const standard_startfile_prefix_2
1122 = STANDARD_STARTFILE_PREFIX_2;
1124 /* A relative path to be used in finding the location of tools
1125 relative to the driver. */
1126 static const char *const tooldir_base_prefix = TOOLDIR_BASE_PREFIX;
1128 /* Subdirectory to use for locating libraries. Set by
1129 set_multilib_dir based on the compilation options. */
1131 static const char *multilib_dir;
1133 /* Subdirectory to use for locating libraries in OS conventions. Set by
1134 set_multilib_dir based on the compilation options. */
1136 static const char *multilib_os_dir;
1138 /* Structure to keep track of the specs that have been defined so far.
1139 These are accessed using %(specname) or %[specname] in a compiler
1144 /* The following 2 fields must be first */
1145 /* to allow EXTRA_SPECS to be initialized */
1146 const char *name; /* name of the spec. */
1147 const char *ptr; /* available ptr if no static pointer */
1149 /* The following fields are not initialized */
1150 /* by EXTRA_SPECS */
1151 const char **ptr_spec; /* pointer to the spec itself. */
1152 struct spec_list *next; /* Next spec in linked list. */
1153 int name_len; /* length of the name */
1154 int alloc_p; /* whether string was allocated */
1157 #define INIT_STATIC_SPEC(NAME,PTR) \
1158 { NAME, NULL, PTR, (struct spec_list *) 0, sizeof (NAME) - 1, 0 }
1160 /* List of statically defined specs. */
1161 static struct spec_list static_specs[] =
1163 INIT_STATIC_SPEC ("asm", &asm_spec),
1164 INIT_STATIC_SPEC ("asm_debug", &asm_debug),
1165 INIT_STATIC_SPEC ("asm_final", &asm_final_spec),
1166 INIT_STATIC_SPEC ("asm_options", &asm_options),
1167 INIT_STATIC_SPEC ("invoke_as", &invoke_as),
1168 INIT_STATIC_SPEC ("cpp", &cpp_spec),
1169 INIT_STATIC_SPEC ("cpp_options", &cpp_options),
1170 INIT_STATIC_SPEC ("cpp_debug_options", &cpp_debug_options),
1171 INIT_STATIC_SPEC ("cpp_unique_options", &cpp_unique_options),
1172 INIT_STATIC_SPEC ("trad_capable_cpp", &trad_capable_cpp),
1173 INIT_STATIC_SPEC ("cc1", &cc1_spec),
1174 INIT_STATIC_SPEC ("cc1_options", &cc1_options),
1175 INIT_STATIC_SPEC ("cc1plus", &cc1plus_spec),
1176 INIT_STATIC_SPEC ("link_gcc_c_sequence", &link_gcc_c_sequence_spec),
1177 INIT_STATIC_SPEC ("link_ssp", &link_ssp_spec),
1178 INIT_STATIC_SPEC ("endfile", &endfile_spec),
1179 INIT_STATIC_SPEC ("link", &link_spec),
1180 INIT_STATIC_SPEC ("lib", &lib_spec),
1181 INIT_STATIC_SPEC ("mfwrap", &mfwrap_spec),
1182 INIT_STATIC_SPEC ("mflib", &mflib_spec),
1183 INIT_STATIC_SPEC ("link_gomp", &link_gomp_spec),
1184 INIT_STATIC_SPEC ("libgcc", &libgcc_spec),
1185 INIT_STATIC_SPEC ("startfile", &startfile_spec),
1186 INIT_STATIC_SPEC ("cross_compile", &cross_compile),
1187 INIT_STATIC_SPEC ("version", &compiler_version),
1188 INIT_STATIC_SPEC ("multilib", &multilib_select),
1189 INIT_STATIC_SPEC ("multilib_defaults", &multilib_defaults),
1190 INIT_STATIC_SPEC ("multilib_extra", &multilib_extra),
1191 INIT_STATIC_SPEC ("multilib_matches", &multilib_matches),
1192 INIT_STATIC_SPEC ("multilib_exclusions", &multilib_exclusions),
1193 INIT_STATIC_SPEC ("multilib_options", &multilib_options),
1194 INIT_STATIC_SPEC ("linker", &linker_name_spec),
1195 INIT_STATIC_SPEC ("linker_plugin_file", &linker_plugin_file_spec),
1196 INIT_STATIC_SPEC ("lto_wrapper", <o_wrapper_spec),
1197 INIT_STATIC_SPEC ("lto_gcc", <o_gcc_spec),
1198 INIT_STATIC_SPEC ("lto_libgcc", <o_libgcc_spec),
1199 INIT_STATIC_SPEC ("link_libgcc", &link_libgcc_spec),
1200 INIT_STATIC_SPEC ("md_exec_prefix", &md_exec_prefix),
1201 INIT_STATIC_SPEC ("md_startfile_prefix", &md_startfile_prefix),
1202 INIT_STATIC_SPEC ("md_startfile_prefix_1", &md_startfile_prefix_1),
1203 INIT_STATIC_SPEC ("startfile_prefix_spec", &startfile_prefix_spec),
1204 INIT_STATIC_SPEC ("sysroot_spec", &sysroot_spec),
1205 INIT_STATIC_SPEC ("sysroot_suffix_spec", &sysroot_suffix_spec),
1206 INIT_STATIC_SPEC ("sysroot_hdrs_suffix_spec", &sysroot_hdrs_suffix_spec),
1209 #ifdef EXTRA_SPECS /* additional specs needed */
1210 /* Structure to keep track of just the first two args of a spec_list.
1211 That is all that the EXTRA_SPECS macro gives us. */
1214 const char *const name;
1215 const char *const ptr;
1218 static const struct spec_list_1 extra_specs_1[] = { EXTRA_SPECS };
1219 static struct spec_list *extra_specs = (struct spec_list *) 0;
1222 /* List of dynamically allocates specs that have been defined so far. */
1224 static struct spec_list *specs = (struct spec_list *) 0;
1226 /* List of static spec functions. */
1228 static const struct spec_function static_spec_functions[] =
1230 { "getenv", getenv_spec_function },
1231 { "if-exists", if_exists_spec_function },
1232 { "if-exists-else", if_exists_else_spec_function },
1233 { "replace-outfile", replace_outfile_spec_function },
1234 { "remove-outfile", remove_outfile_spec_function },
1235 { "version-compare", version_compare_spec_function },
1236 { "include", include_spec_function },
1237 { "find-file", find_file_spec_function },
1238 { "find-plugindir", find_plugindir_spec_function },
1239 { "print-asm-header", print_asm_header_spec_function },
1240 { "compare-debug-dump-opt", compare_debug_dump_opt_spec_function },
1241 { "compare-debug-self-opt", compare_debug_self_opt_spec_function },
1242 { "compare-debug-auxbase-opt", compare_debug_auxbase_opt_spec_function },
1243 #ifdef EXTRA_SPEC_FUNCTIONS
1244 EXTRA_SPEC_FUNCTIONS
1249 static int processing_spec_function;
1251 /* Add appropriate libgcc specs to OBSTACK, taking into account
1252 various permutations of -shared-libgcc, -shared, and such. */
1254 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
1256 #ifndef USE_LD_AS_NEEDED
1257 #define USE_LD_AS_NEEDED 0
1261 init_gcc_specs (struct obstack *obstack, const char *shared_name,
1262 const char *static_name, const char *eh_name)
1266 buf = concat ("%{static|static-libgcc:", static_name, " ", eh_name, "}"
1267 "%{!static:%{!static-libgcc:"
1268 #if USE_LD_AS_NEEDED
1269 "%{!shared-libgcc:",
1270 static_name, " --as-needed ", shared_name, " --no-as-needed"
1273 shared_name, "%{!shared: ", static_name, "}"
1277 "%{!shared-libgcc:", static_name, " ", eh_name, "}"
1278 "%{shared-libgcc:", shared_name, " ", static_name, "}"
1282 "%{shared-libgcc:", shared_name, "}"
1283 "%{!shared-libgcc:", static_name, "}"
1286 "%{shared:", shared_name, "}"
1291 obstack_grow (obstack, buf, strlen (buf));
1294 #endif /* ENABLE_SHARED_LIBGCC */
1296 /* Initialize the specs lookup routines. */
1301 struct spec_list *next = (struct spec_list *) 0;
1302 struct spec_list *sl = (struct spec_list *) 0;
1306 return; /* Already initialized. */
1309 fnotice (stderr, "Using built-in specs.\n");
1312 extra_specs = XCNEWVEC (struct spec_list, ARRAY_SIZE (extra_specs_1));
1314 for (i = ARRAY_SIZE (extra_specs_1) - 1; i >= 0; i--)
1316 sl = &extra_specs[i];
1317 sl->name = extra_specs_1[i].name;
1318 sl->ptr = extra_specs_1[i].ptr;
1320 sl->name_len = strlen (sl->name);
1321 sl->ptr_spec = &sl->ptr;
1326 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--)
1328 sl = &static_specs[i];
1333 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
1334 /* ??? If neither -shared-libgcc nor --static-libgcc was
1335 seen, then we should be making an educated guess. Some proposed
1336 heuristics for ELF include:
1338 (1) If "-Wl,--export-dynamic", then it's a fair bet that the
1339 program will be doing dynamic loading, which will likely
1340 need the shared libgcc.
1342 (2) If "-ldl", then it's also a fair bet that we're doing
1345 (3) For each ET_DYN we're linking against (either through -lfoo
1346 or /some/path/foo.so), check to see whether it or one of
1347 its dependencies depends on a shared libgcc.
1351 If the runtime is fixed to look for program headers instead
1352 of calling __register_frame_info at all, for each object,
1353 use the shared libgcc if any EH symbol referenced.
1355 If crtstuff is fixed to not invoke __register_frame_info
1356 automatically, for each object, use the shared libgcc if
1357 any non-empty unwind section found.
1359 Doing any of this probably requires invoking an external program to
1360 do the actual object file scanning. */
1362 const char *p = libgcc_spec;
1365 /* Transform the extant libgcc_spec into one that uses the shared libgcc
1366 when given the proper command line arguments. */
1369 if (in_sep && *p == '-' && strncmp (p, "-lgcc", 5) == 0)
1371 init_gcc_specs (&obstack,
1373 #ifdef USE_LIBUNWIND_EXCEPTIONS
1379 #ifdef USE_LIBUNWIND_EXCEPTIONS
1380 # ifdef HAVE_LD_STATIC_DYNAMIC
1381 " %{!static:-Bstatic} -lunwind %{!static:-Bdynamic}"
1391 else if (in_sep && *p == 'l' && strncmp (p, "libgcc.a%s", 10) == 0)
1393 /* Ug. We don't know shared library extensions. Hope that
1394 systems that use this form don't do shared libraries. */
1395 init_gcc_specs (&obstack,
1399 #ifdef USE_LIBUNWIND_EXCEPTIONS
1408 obstack_1grow (&obstack, *p);
1409 in_sep = (*p == ' ');
1414 obstack_1grow (&obstack, '\0');
1415 libgcc_spec = XOBFINISH (&obstack, const char *);
1418 #ifdef USE_AS_TRADITIONAL_FORMAT
1419 /* Prepend "--traditional-format" to whatever asm_spec we had before. */
1421 static const char tf[] = "--traditional-format ";
1422 obstack_grow (&obstack, tf, sizeof(tf) - 1);
1423 obstack_grow0 (&obstack, asm_spec, strlen (asm_spec));
1424 asm_spec = XOBFINISH (&obstack, const char *);
1428 #if defined LINK_EH_SPEC || defined LINK_BUILDID_SPEC
1429 # ifdef LINK_BUILDID_SPEC
1430 /* Prepend LINK_BUILDID_SPEC to whatever link_spec we had before. */
1431 obstack_grow (&obstack, LINK_BUILDID_SPEC, sizeof(LINK_BUILDID_SPEC) - 1);
1433 # ifdef LINK_EH_SPEC
1434 /* Prepend LINK_EH_SPEC to whatever link_spec we had before. */
1435 obstack_grow (&obstack, LINK_EH_SPEC, sizeof(LINK_EH_SPEC) - 1);
1437 obstack_grow0 (&obstack, link_spec, strlen (link_spec));
1438 link_spec = XOBFINISH (&obstack, const char *);
1444 /* Change the value of spec NAME to SPEC. If SPEC is empty, then the spec is
1445 removed; If the spec starts with a + then SPEC is added to the end of the
1449 set_spec (const char *name, const char *spec)
1451 struct spec_list *sl;
1452 const char *old_spec;
1453 int name_len = strlen (name);
1456 /* If this is the first call, initialize the statically allocated specs. */
1459 struct spec_list *next = (struct spec_list *) 0;
1460 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--)
1462 sl = &static_specs[i];
1469 /* See if the spec already exists. */
1470 for (sl = specs; sl; sl = sl->next)
1471 if (name_len == sl->name_len && !strcmp (sl->name, name))
1476 /* Not found - make it. */
1477 sl = XNEW (struct spec_list);
1478 sl->name = xstrdup (name);
1479 sl->name_len = name_len;
1480 sl->ptr_spec = &sl->ptr;
1482 *(sl->ptr_spec) = "";
1487 old_spec = *(sl->ptr_spec);
1488 *(sl->ptr_spec) = ((spec[0] == '+' && ISSPACE ((unsigned char)spec[1]))
1489 ? concat (old_spec, spec + 1, NULL)
1494 fnotice (stderr, "Setting spec %s to '%s'\n\n", name, *(sl->ptr_spec));
1497 /* Free the old spec. */
1498 if (old_spec && sl->alloc_p)
1499 free (CONST_CAST(char *, old_spec));
1504 /* Accumulate a command (program name and args), and run it. */
1506 /* Vector of pointers to arguments in the current line of specifications. */
1508 static const char **argbuf;
1510 /* Number of elements allocated in argbuf. */
1512 static int argbuf_length;
1514 /* Number of elements in argbuf currently in use (containing args). */
1516 static int argbuf_index;
1518 /* Position in the argbuf array containing the name of the output file
1519 (the value associated with the "-o" flag). */
1521 static int have_o_argbuf_index = 0;
1523 /* Were the options -c, -S or -E passed. */
1524 static int have_c = 0;
1526 /* Was the option -o passed. */
1527 static int have_o = 0;
1529 /* This is the list of suffixes and codes (%g/%u/%U/%j) and the associated
1530 temp file. If the HOST_BIT_BUCKET is used for %j, no entry is made for
1533 static struct temp_name {
1534 const char *suffix; /* suffix associated with the code. */
1535 int length; /* strlen (suffix). */
1536 int unique; /* Indicates whether %g or %u/%U was used. */
1537 const char *filename; /* associated filename. */
1538 int filename_length; /* strlen (filename). */
1539 struct temp_name *next;
1542 /* Number of commands executed so far. */
1544 static int execution_count;
1546 /* Number of commands that exited with a signal. */
1548 static int signal_count;
1550 /* Allocate the argument vector. */
1556 argbuf = XNEWVEC (const char *, argbuf_length);
1559 /* Clear out the vector of arguments (after a command is executed). */
1567 /* Add one argument to the vector at the end.
1568 This is done when a space is seen or at the end of the line.
1569 If DELETE_ALWAYS is nonzero, the arg is a filename
1570 and the file should be deleted eventually.
1571 If DELETE_FAILURE is nonzero, the arg is a filename
1572 and the file should be deleted if this compilation fails. */
1575 store_arg (const char *arg, int delete_always, int delete_failure)
1577 if (argbuf_index + 1 == argbuf_length)
1578 argbuf = XRESIZEVEC (const char *, argbuf, (argbuf_length *= 2));
1580 argbuf[argbuf_index++] = arg;
1581 argbuf[argbuf_index] = 0;
1583 if (strcmp (arg, "-o") == 0)
1584 have_o_argbuf_index = argbuf_index;
1585 if (delete_always || delete_failure)
1588 /* If the temporary file we should delete is specified as
1589 part of a joined argument extract the filename. */
1591 && (p = strrchr (arg, '=')))
1593 record_temp_file (arg, delete_always, delete_failure);
1597 /* Load specs from a file name named FILENAME, replacing occurrences of
1598 various different types of line-endings, \r\n, \n\r and just \r, with
1602 load_specs (const char *filename)
1606 struct stat statbuf;
1613 fnotice (stderr, "Reading specs from %s\n", filename);
1615 /* Open and stat the file. */
1616 desc = open (filename, O_RDONLY, 0);
1618 pfatal_with_name (filename);
1619 if (stat (filename, &statbuf) < 0)
1620 pfatal_with_name (filename);
1622 /* Read contents of file into BUFFER. */
1623 buffer = XNEWVEC (char, statbuf.st_size + 1);
1624 readlen = read (desc, buffer, (unsigned) statbuf.st_size);
1626 pfatal_with_name (filename);
1627 buffer[readlen] = 0;
1630 specs = XNEWVEC (char, readlen + 1);
1632 for (buffer_p = buffer; buffer_p && *buffer_p; buffer_p++)
1638 if (buffer_p > buffer && *(buffer_p - 1) == '\n') /* \n\r */
1640 else if (*(buffer_p + 1) == '\n') /* \r\n */
1654 /* Read compilation specs from a file named FILENAME,
1655 replacing the default ones.
1657 A suffix which starts with `*' is a definition for
1658 one of the machine-specific sub-specs. The "suffix" should be
1659 *asm, *cc1, *cpp, *link, *startfile, etc.
1660 The corresponding spec is stored in asm_spec, etc.,
1661 rather than in the `compilers' vector.
1663 Anything invalid in the file is a fatal error. */
1666 read_specs (const char *filename, int main_p)
1671 buffer = load_specs (filename);
1673 /* Scan BUFFER for specs, putting them in the vector. */
1679 char *in, *out, *p1, *p2, *p3;
1681 /* Advance P in BUFFER to the next nonblank nocomment line. */
1682 p = skip_whitespace (p);
1686 /* Is this a special command that starts with '%'? */
1687 /* Don't allow this for the main specs file, since it would
1688 encourage people to overwrite it. */
1689 if (*p == '%' && !main_p)
1692 while (*p && *p != '\n')
1698 if (!strncmp (p1, "%include", sizeof ("%include") - 1)
1699 && (p1[sizeof "%include" - 1] == ' '
1700 || p1[sizeof "%include" - 1] == '\t'))
1704 p1 += sizeof ("%include");
1705 while (*p1 == ' ' || *p1 == '\t')
1708 if (*p1++ != '<' || p[-2] != '>')
1709 fatal_error ("specs %%include syntax malformed after "
1711 (long) (p1 - buffer + 1));
1714 new_filename = find_a_file (&startfile_prefixes, p1, R_OK, true);
1715 read_specs (new_filename ? new_filename : p1, FALSE);
1718 else if (!strncmp (p1, "%include_noerr", sizeof "%include_noerr" - 1)
1719 && (p1[sizeof "%include_noerr" - 1] == ' '
1720 || p1[sizeof "%include_noerr" - 1] == '\t'))
1724 p1 += sizeof "%include_noerr";
1725 while (*p1 == ' ' || *p1 == '\t')
1728 if (*p1++ != '<' || p[-2] != '>')
1729 fatal_error ("specs %%include syntax malformed after "
1731 (long) (p1 - buffer + 1));
1734 new_filename = find_a_file (&startfile_prefixes, p1, R_OK, true);
1736 read_specs (new_filename, FALSE);
1737 else if (verbose_flag)
1738 fnotice (stderr, "could not find specs file %s\n", p1);
1741 else if (!strncmp (p1, "%rename", sizeof "%rename" - 1)
1742 && (p1[sizeof "%rename" - 1] == ' '
1743 || p1[sizeof "%rename" - 1] == '\t'))
1746 struct spec_list *sl;
1747 struct spec_list *newsl;
1749 /* Get original name. */
1750 p1 += sizeof "%rename";
1751 while (*p1 == ' ' || *p1 == '\t')
1754 if (! ISALPHA ((unsigned char) *p1))
1755 fatal_error ("specs %%rename syntax malformed after "
1757 (long) (p1 - buffer));
1760 while (*p2 && !ISSPACE ((unsigned char) *p2))
1763 if (*p2 != ' ' && *p2 != '\t')
1764 fatal_error ("specs %%rename syntax malformed after "
1766 (long) (p2 - buffer));
1770 while (*p2 == ' ' || *p2 == '\t')
1773 if (! ISALPHA ((unsigned char) *p2))
1774 fatal_error ("specs %%rename syntax malformed after "
1776 (long) (p2 - buffer));
1778 /* Get new spec name. */
1780 while (*p3 && !ISSPACE ((unsigned char) *p3))
1784 fatal_error ("specs %%rename syntax malformed after "
1786 (long) (p3 - buffer));
1789 for (sl = specs; sl; sl = sl->next)
1790 if (name_len == sl->name_len && !strcmp (sl->name, p1))
1794 fatal_error ("specs %s spec was not found to be renamed", p1);
1796 if (strcmp (p1, p2) == 0)
1799 for (newsl = specs; newsl; newsl = newsl->next)
1800 if (strcmp (newsl->name, p2) == 0)
1801 fatal_error ("%s: attempt to rename spec %qs to "
1802 "already defined spec %qs",
1807 fnotice (stderr, "rename spec %s to %s\n", p1, p2);
1809 fnotice (stderr, "spec is '%s'\n\n", *(sl->ptr_spec));
1813 set_spec (p2, *(sl->ptr_spec));
1815 free (CONST_CAST (char *, *(sl->ptr_spec)));
1817 *(sl->ptr_spec) = "";
1822 fatal_error ("specs unknown %% command after %ld characters",
1823 (long) (p1 - buffer));
1826 /* Find the colon that should end the suffix. */
1828 while (*p1 && *p1 != ':' && *p1 != '\n')
1831 /* The colon shouldn't be missing. */
1833 fatal_error ("specs file malformed after %ld characters",
1834 (long) (p1 - buffer));
1836 /* Skip back over trailing whitespace. */
1838 while (p2 > buffer && (p2[-1] == ' ' || p2[-1] == '\t'))
1841 /* Copy the suffix to a string. */
1842 suffix = save_string (p, p2 - p);
1843 /* Find the next line. */
1844 p = skip_whitespace (p1 + 1);
1846 fatal_error ("specs file malformed after %ld characters",
1847 (long) (p - buffer));
1850 /* Find next blank line or end of string. */
1851 while (*p1 && !(*p1 == '\n' && (p1[1] == '\n' || p1[1] == '\0')))
1854 /* Specs end at the blank line and do not include the newline. */
1855 spec = save_string (p, p1 - p);
1858 /* Delete backslash-newline sequences from the spec. */
1863 if (in[0] == '\\' && in[1] == '\n')
1865 else if (in[0] == '#')
1866 while (*in && *in != '\n')
1874 if (suffix[0] == '*')
1876 if (! strcmp (suffix, "*link_command"))
1877 link_command_spec = spec;
1879 set_spec (suffix + 1, spec);
1883 /* Add this pair to the vector. */
1885 = XRESIZEVEC (struct compiler, compilers, n_compilers + 2);
1887 compilers[n_compilers].suffix = suffix;
1888 compilers[n_compilers].spec = spec;
1890 memset (&compilers[n_compilers], 0, sizeof compilers[n_compilers]);
1894 link_command_spec = spec;
1897 if (link_command_spec == 0)
1898 fatal_error ("spec file has no spec for linking");
1901 /* Record the names of temporary files we tell compilers to write,
1902 and delete them at the end of the run. */
1904 /* This is the common prefix we use to make temp file names.
1905 It is chosen once for each run of this program.
1906 It is substituted into a spec by %g or %j.
1907 Thus, all temp file names contain this prefix.
1908 In practice, all temp file names start with this prefix.
1910 This prefix comes from the envvar TMPDIR if it is defined;
1911 otherwise, from the P_tmpdir macro if that is defined;
1912 otherwise, in /usr/tmp or /tmp;
1913 or finally the current directory if all else fails. */
1915 static const char *temp_filename;
1917 /* Length of the prefix. */
1919 static int temp_filename_length;
1921 /* Define the list of temporary files to delete. */
1926 struct temp_file *next;
1929 /* Queue of files to delete on success or failure of compilation. */
1930 static struct temp_file *always_delete_queue;
1931 /* Queue of files to delete on failure of compilation. */
1932 static struct temp_file *failure_delete_queue;
1934 /* Record FILENAME as a file to be deleted automatically.
1935 ALWAYS_DELETE nonzero means delete it if all compilation succeeds;
1936 otherwise delete it in any case.
1937 FAIL_DELETE nonzero means delete it if a compilation step fails;
1938 otherwise delete it in any case. */
1941 record_temp_file (const char *filename, int always_delete, int fail_delete)
1943 char *const name = xstrdup (filename);
1947 struct temp_file *temp;
1948 for (temp = always_delete_queue; temp; temp = temp->next)
1949 if (! strcmp (name, temp->name))
1952 temp = XNEW (struct temp_file);
1953 temp->next = always_delete_queue;
1955 always_delete_queue = temp;
1962 struct temp_file *temp;
1963 for (temp = failure_delete_queue; temp; temp = temp->next)
1964 if (! strcmp (name, temp->name))
1967 temp = XNEW (struct temp_file);
1968 temp->next = failure_delete_queue;
1970 failure_delete_queue = temp;
1976 /* Delete all the temporary files whose names we previously recorded. */
1978 #ifndef DELETE_IF_ORDINARY
1979 #define DELETE_IF_ORDINARY(NAME,ST,VERBOSE_FLAG) \
1982 if (stat (NAME, &ST) >= 0 && S_ISREG (ST.st_mode)) \
1983 if (unlink (NAME) < 0) \
1985 perror_with_name (NAME); \
1990 delete_if_ordinary (const char *name)
1996 printf ("Delete %s? (y or n) ", name);
2000 while ((c = getchar ()) != '\n' && c != EOF)
2003 if (i == 'y' || i == 'Y')
2005 DELETE_IF_ORDINARY (name, st, verbose_flag);
2009 delete_temp_files (void)
2011 struct temp_file *temp;
2013 for (temp = always_delete_queue; temp; temp = temp->next)
2014 delete_if_ordinary (temp->name);
2015 always_delete_queue = 0;
2018 /* Delete all the files to be deleted on error. */
2021 delete_failure_queue (void)
2023 struct temp_file *temp;
2025 for (temp = failure_delete_queue; temp; temp = temp->next)
2026 delete_if_ordinary (temp->name);
2030 clear_failure_queue (void)
2032 failure_delete_queue = 0;
2035 /* Call CALLBACK for each path in PATHS, breaking out early if CALLBACK
2037 If DO_MULTI is true iterate over the paths twice, first with multilib
2038 suffix then without, otherwise iterate over the paths once without
2039 adding a multilib suffix. When DO_MULTI is true, some attempt is made
2040 to avoid visiting the same path twice, but we could do better. For
2041 instance, /usr/lib/../lib is considered different from /usr/lib.
2042 At least EXTRA_SPACE chars past the end of the path passed to
2043 CALLBACK are available for use by the callback.
2044 CALLBACK_INFO allows extra parameters to be passed to CALLBACK.
2046 Returns the value returned by CALLBACK. */
2049 for_each_path (const struct path_prefix *paths,
2052 void *(*callback) (char *, void *),
2053 void *callback_info)
2055 struct prefix_list *pl;
2056 const char *multi_dir = NULL;
2057 const char *multi_os_dir = NULL;
2058 const char *multi_suffix;
2059 const char *just_multi_suffix;
2062 bool skip_multi_dir = false;
2063 bool skip_multi_os_dir = false;
2065 multi_suffix = machine_suffix;
2066 just_multi_suffix = just_machine_suffix;
2067 if (do_multi && multilib_dir && strcmp (multilib_dir, ".") != 0)
2069 multi_dir = concat (multilib_dir, dir_separator_str, NULL);
2070 multi_suffix = concat (multi_suffix, multi_dir, NULL);
2071 just_multi_suffix = concat (just_multi_suffix, multi_dir, NULL);
2073 if (do_multi && multilib_os_dir && strcmp (multilib_os_dir, ".") != 0)
2074 multi_os_dir = concat (multilib_os_dir, dir_separator_str, NULL);
2078 size_t multi_dir_len = 0;
2079 size_t multi_os_dir_len = 0;
2081 size_t just_suffix_len;
2085 multi_dir_len = strlen (multi_dir);
2087 multi_os_dir_len = strlen (multi_os_dir);
2088 suffix_len = strlen (multi_suffix);
2089 just_suffix_len = strlen (just_multi_suffix);
2093 len = paths->max_len + extra_space + 1;
2094 if (suffix_len > multi_os_dir_len)
2097 len += multi_os_dir_len;
2098 path = XNEWVEC (char, len);
2101 for (pl = paths->plist; pl != 0; pl = pl->next)
2103 len = strlen (pl->prefix);
2104 memcpy (path, pl->prefix, len);
2106 /* Look first in MACHINE/VERSION subdirectory. */
2107 if (!skip_multi_dir)
2109 memcpy (path + len, multi_suffix, suffix_len + 1);
2110 ret = callback (path, callback_info);
2115 /* Some paths are tried with just the machine (ie. target)
2116 subdir. This is used for finding as, ld, etc. */
2118 && pl->require_machine_suffix == 2)
2120 memcpy (path + len, just_multi_suffix, just_suffix_len + 1);
2121 ret = callback (path, callback_info);
2126 /* Now try the base path. */
2127 if (!pl->require_machine_suffix
2128 && !(pl->os_multilib ? skip_multi_os_dir : skip_multi_dir))
2130 const char *this_multi;
2131 size_t this_multi_len;
2133 if (pl->os_multilib)
2135 this_multi = multi_os_dir;
2136 this_multi_len = multi_os_dir_len;
2140 this_multi = multi_dir;
2141 this_multi_len = multi_dir_len;
2145 memcpy (path + len, this_multi, this_multi_len + 1);
2149 ret = callback (path, callback_info);
2157 if (multi_dir == NULL && multi_os_dir == NULL)
2160 /* Run through the paths again, this time without multilibs.
2161 Don't repeat any we have already seen. */
2164 free (CONST_CAST (char *, multi_dir));
2166 free (CONST_CAST (char *, multi_suffix));
2167 multi_suffix = machine_suffix;
2168 free (CONST_CAST (char *, just_multi_suffix));
2169 just_multi_suffix = just_machine_suffix;
2172 skip_multi_dir = true;
2175 free (CONST_CAST (char *, multi_os_dir));
2176 multi_os_dir = NULL;
2179 skip_multi_os_dir = true;
2184 free (CONST_CAST (char *, multi_dir));
2185 free (CONST_CAST (char *, multi_suffix));
2186 free (CONST_CAST (char *, just_multi_suffix));
2189 free (CONST_CAST (char *, multi_os_dir));
2195 /* Callback for build_search_list. Adds path to obstack being built. */
2197 struct add_to_obstack_info {
2204 add_to_obstack (char *path, void *data)
2206 struct add_to_obstack_info *info = (struct add_to_obstack_info *) data;
2208 if (info->check_dir && !is_directory (path, false))
2211 if (!info->first_time)
2212 obstack_1grow (info->ob, PATH_SEPARATOR);
2214 obstack_grow (info->ob, path, strlen (path));
2216 info->first_time = false;
2220 /* Add or change the value of an environment variable, outputting the
2221 change to standard error if in verbose mode. */
2223 xputenv (const char *string)
2226 fnotice (stderr, "%s\n", string);
2227 putenv (CONST_CAST (char *, string));
2230 /* Build a list of search directories from PATHS.
2231 PREFIX is a string to prepend to the list.
2232 If CHECK_DIR_P is true we ensure the directory exists.
2233 If DO_MULTI is true, multilib paths are output first, then
2235 This is used mostly by putenv_from_prefixes so we use `collect_obstack'.
2236 It is also used by the --print-search-dirs flag. */
2239 build_search_list (const struct path_prefix *paths, const char *prefix,
2240 bool check_dir, bool do_multi)
2242 struct add_to_obstack_info info;
2244 info.ob = &collect_obstack;
2245 info.check_dir = check_dir;
2246 info.first_time = true;
2248 obstack_grow (&collect_obstack, prefix, strlen (prefix));
2249 obstack_1grow (&collect_obstack, '=');
2251 for_each_path (paths, do_multi, 0, add_to_obstack, &info);
2253 obstack_1grow (&collect_obstack, '\0');
2254 return XOBFINISH (&collect_obstack, char *);
2257 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
2261 putenv_from_prefixes (const struct path_prefix *paths, const char *env_var,
2264 xputenv (build_search_list (paths, env_var, true, do_multi));
2267 /* Check whether NAME can be accessed in MODE. This is like access,
2268 except that it never considers directories to be executable. */
2271 access_check (const char *name, int mode)
2277 if (stat (name, &st) < 0
2278 || S_ISDIR (st.st_mode))
2282 return access (name, mode);
2285 /* Callback for find_a_file. Appends the file name to the directory
2286 path. If the resulting file exists in the right mode, return the
2287 full pathname to the file. */
2289 struct file_at_path_info {
2298 file_at_path (char *path, void *data)
2300 struct file_at_path_info *info = (struct file_at_path_info *) data;
2301 size_t len = strlen (path);
2303 memcpy (path + len, info->name, info->name_len);
2304 len += info->name_len;
2306 /* Some systems have a suffix for executable files.
2307 So try appending that first. */
2308 if (info->suffix_len)
2310 memcpy (path + len, info->suffix, info->suffix_len + 1);
2311 if (access_check (path, info->mode) == 0)
2316 if (access_check (path, info->mode) == 0)
2322 /* Search for NAME using the prefix list PREFIXES. MODE is passed to
2323 access to check permissions. If DO_MULTI is true, search multilib
2324 paths then non-multilib paths, otherwise do not search multilib paths.
2325 Return 0 if not found, otherwise return its name, allocated with malloc. */
2328 find_a_file (const struct path_prefix *pprefix, const char *name, int mode,
2331 struct file_at_path_info info;
2333 #ifdef DEFAULT_ASSEMBLER
2334 if (! strcmp (name, "as") && access (DEFAULT_ASSEMBLER, mode) == 0)
2335 return xstrdup (DEFAULT_ASSEMBLER);
2338 #ifdef DEFAULT_LINKER
2339 if (! strcmp(name, "ld") && access (DEFAULT_LINKER, mode) == 0)
2340 return xstrdup (DEFAULT_LINKER);
2343 /* Determine the filename to execute (special case for absolute paths). */
2345 if (IS_ABSOLUTE_PATH (name))
2347 if (access (name, mode) == 0)
2348 return xstrdup (name);
2354 info.suffix = (mode & X_OK) != 0 ? HOST_EXECUTABLE_SUFFIX : "";
2355 info.name_len = strlen (info.name);
2356 info.suffix_len = strlen (info.suffix);
2359 return (char*) for_each_path (pprefix, do_multi,
2360 info.name_len + info.suffix_len,
2361 file_at_path, &info);
2364 /* Ranking of prefixes in the sort list. -B prefixes are put before
2367 enum path_prefix_priority
2369 PREFIX_PRIORITY_B_OPT,
2370 PREFIX_PRIORITY_LAST
2373 /* Add an entry for PREFIX in PLIST. The PLIST is kept in ascending
2374 order according to PRIORITY. Within each PRIORITY, new entries are
2377 If WARN is nonzero, we will warn if no file is found
2378 through this prefix. WARN should point to an int
2379 which will be set to 1 if this entry is used.
2381 COMPONENT is the value to be passed to update_path.
2383 REQUIRE_MACHINE_SUFFIX is 1 if this prefix can't be used without
2384 the complete value of machine_suffix.
2385 2 means try both machine_suffix and just_machine_suffix. */
2388 add_prefix (struct path_prefix *pprefix, const char *prefix,
2389 const char *component, /* enum prefix_priority */ int priority,
2390 int require_machine_suffix, int os_multilib)
2392 struct prefix_list *pl, **prev;
2395 for (prev = &pprefix->plist;
2396 (*prev) != NULL && (*prev)->priority <= priority;
2397 prev = &(*prev)->next)
2400 /* Keep track of the longest prefix. */
2402 prefix = update_path (prefix, component);
2403 len = strlen (prefix);
2404 if (len > pprefix->max_len)
2405 pprefix->max_len = len;
2407 pl = XNEW (struct prefix_list);
2408 pl->prefix = prefix;
2409 pl->require_machine_suffix = require_machine_suffix;
2410 pl->priority = priority;
2411 pl->os_multilib = os_multilib;
2413 /* Insert after PREV. */
2418 /* Same as add_prefix, but prepending target_system_root to prefix. */
2419 /* The target_system_root prefix has been relocated by gcc_exec_prefix. */
2421 add_sysrooted_prefix (struct path_prefix *pprefix, const char *prefix,
2422 const char *component,
2423 /* enum prefix_priority */ int priority,
2424 int require_machine_suffix, int os_multilib)
2426 if (!IS_ABSOLUTE_PATH (prefix))
2427 fatal_error ("system path %qs is not absolute", prefix);
2429 if (target_system_root)
2431 if (target_sysroot_suffix)
2432 prefix = concat (target_sysroot_suffix, prefix, NULL);
2433 prefix = concat (target_system_root, prefix, NULL);
2435 /* We have to override this because GCC's notion of sysroot
2436 moves along with GCC. */
2440 add_prefix (pprefix, prefix, component, priority,
2441 require_machine_suffix, os_multilib);
2444 /* Execute the command specified by the arguments on the current line of spec.
2445 When using pipes, this includes several piped-together commands
2446 with `|' between them.
2448 Return 0 if successful, -1 if failed. */
2454 int n_commands; /* # of command. */
2456 struct pex_obj *pex;
2459 const char *prog; /* program name. */
2460 const char **argv; /* vector of args. */
2463 struct command *commands; /* each command buffer with above info. */
2465 gcc_assert (!processing_spec_function);
2469 string = find_a_file (&exec_prefixes, argbuf[0], X_OK, false);
2470 argbuf[0] = (string) ? string : argbuf[0];
2471 insert_wrapper (wrapper_string);
2474 /* Count # of piped commands. */
2475 for (n_commands = 1, i = 0; i < argbuf_index; i++)
2476 if (strcmp (argbuf[i], "|") == 0)
2479 /* Get storage for each command. */
2480 commands = (struct command *) alloca (n_commands * sizeof (struct command));
2482 /* Split argbuf into its separate piped processes,
2483 and record info about each one.
2484 Also search for the programs that are to be run. */
2486 commands[0].prog = argbuf[0]; /* first command. */
2487 commands[0].argv = &argbuf[0];
2489 if (!wrapper_string)
2491 string = find_a_file (&exec_prefixes, commands[0].prog, X_OK, false);
2492 commands[0].argv[0] = (string) ? string : commands[0].argv[0];
2495 for (n_commands = 1, i = 0; i < argbuf_index; i++)
2496 if (strcmp (argbuf[i], "|") == 0)
2497 { /* each command. */
2498 #if defined (__MSDOS__) || defined (OS2) || defined (VMS)
2499 fatal_error ("-pipe not supported");
2501 argbuf[i] = 0; /* termination of command args. */
2502 commands[n_commands].prog = argbuf[i + 1];
2503 commands[n_commands].argv = &argbuf[i + 1];
2504 string = find_a_file (&exec_prefixes, commands[n_commands].prog,
2507 commands[n_commands].argv[0] = string;
2511 argbuf[argbuf_index] = 0;
2513 /* If -v, print what we are about to do, and maybe query. */
2517 /* For help listings, put a blank line between sub-processes. */
2518 if (print_help_list)
2519 fputc ('\n', stderr);
2521 /* Print each piped command as a separate line. */
2522 for (i = 0; i < n_commands; i++)
2524 const char *const *j;
2526 if (verbose_only_flag)
2528 for (j = commands[i].argv; *j; j++)
2531 for (p = *j; *p; ++p)
2532 if (!ISALNUM ((unsigned char) *p)
2533 && *p != '_' && *p != '/' && *p != '-' && *p != '.')
2537 fprintf (stderr, " \"");
2538 for (p = *j; *p; ++p)
2540 if (*p == '"' || *p == '\\' || *p == '$')
2541 fputc ('\\', stderr);
2544 fputc ('"', stderr);
2547 fprintf (stderr, " %s", *j);
2551 for (j = commands[i].argv; *j; j++)
2552 fprintf (stderr, " %s", *j);
2554 /* Print a pipe symbol after all but the last command. */
2555 if (i + 1 != n_commands)
2556 fprintf (stderr, " |");
2557 fprintf (stderr, "\n");
2560 if (verbose_only_flag != 0)
2562 /* verbose_only_flag should act as if the spec was
2563 executed, so increment execution_count before
2564 returning. This prevents spurious warnings about
2565 unused linker input files, etc. */
2570 fnotice (stderr, "\nGo ahead? (y or n) ");
2574 while (getchar () != '\n')
2577 if (i != 'y' && i != 'Y')
2582 #ifdef ENABLE_VALGRIND_CHECKING
2583 /* Run the each command through valgrind. To simplify prepending the
2584 path to valgrind and the option "-q" (for quiet operation unless
2585 something triggers), we allocate a separate argv array. */
2587 for (i = 0; i < n_commands; i++)
2593 for (argc = 0; commands[i].argv[argc] != NULL; argc++)
2596 argv = XALLOCAVEC (const char *, argc + 3);
2598 argv[0] = VALGRIND_PATH;
2600 for (j = 2; j < argc + 2; j++)
2601 argv[j] = commands[i].argv[j - 2];
2604 commands[i].argv = argv;
2605 commands[i].prog = argv[0];
2609 /* Run each piped subprocess. */
2611 pex = pex_init (PEX_USE_PIPES | ((report_times || report_times_to_file)
2612 ? PEX_RECORD_TIMES : 0),
2613 progname, temp_filename);
2615 fatal_error ("pex_init failed: %m");
2617 for (i = 0; i < n_commands; i++)
2621 const char *string = commands[i].argv[0];
2623 errmsg = pex_run (pex,
2624 ((i + 1 == n_commands ? PEX_LAST : 0)
2625 | (string == commands[i].prog ? PEX_SEARCH : 0)),
2626 string, CONST_CAST (char **, commands[i].argv),
2631 fatal_error (errmsg);
2635 pfatal_with_name (errmsg);
2639 if (string != commands[i].prog)
2640 free (CONST_CAST (char *, string));
2645 /* Wait for all the subprocesses to finish. */
2649 struct pex_time *times = NULL;
2652 statuses = (int *) alloca (n_commands * sizeof (int));
2653 if (!pex_get_status (pex, n_commands, statuses))
2654 fatal_error ("failed to get exit status: %m");
2656 if (report_times || report_times_to_file)
2658 times = (struct pex_time *) alloca (n_commands * sizeof (struct pex_time));
2659 if (!pex_get_times (pex, n_commands, times))
2660 fatal_error ("failed to get process times: %m");
2665 for (i = 0; i < n_commands; ++i)
2667 int status = statuses[i];
2669 if (WIFSIGNALED (status))
2672 /* SIGPIPE is a special case. It happens in -pipe mode
2673 when the compiler dies before the preprocessor is done,
2674 or the assembler dies before the compiler is done.
2675 There's generally been an error already, and this is
2676 just fallout. So don't generate another error unless
2677 we would otherwise have succeeded. */
2678 if (WTERMSIG (status) == SIGPIPE
2679 && (signal_count || greatest_status >= MIN_FATAL_STATUS))
2686 internal_error ("%s (program %s)",
2687 strsignal (WTERMSIG (status)), commands[i].prog);
2689 else if (WIFEXITED (status)
2690 && WEXITSTATUS (status) >= MIN_FATAL_STATUS)
2692 if (WEXITSTATUS (status) > greatest_status)
2693 greatest_status = WEXITSTATUS (status);
2697 if (report_times || report_times_to_file)
2699 struct pex_time *pt = ×[i];
2702 ut = ((double) pt->user_seconds
2703 + (double) pt->user_microseconds / 1.0e6);
2704 st = ((double) pt->system_seconds
2705 + (double) pt->system_microseconds / 1.0e6);
2710 fnotice (stderr, "# %s %.2f %.2f\n",
2711 commands[i].prog, ut, st);
2713 if (report_times_to_file)
2716 const char *const *j;
2718 fprintf (report_times_to_file, "%g %g", ut, st);
2720 for (j = &commands[i].prog; *j; j = &commands[i].argv[++c])
2723 for (p = *j; *p; ++p)
2724 if (*p == '"' || *p == '\\' || *p == '$'
2730 fprintf (report_times_to_file, " \"");
2731 for (p = *j; *p; ++p)
2733 if (*p == '"' || *p == '\\' || *p == '$')
2734 fputc ('\\', report_times_to_file);
2735 fputc (*p, report_times_to_file);
2737 fputc ('"', report_times_to_file);
2740 fprintf (report_times_to_file, " %s", *j);
2743 fputc ('\n', report_times_to_file);
2753 /* Find all the switches given to us
2754 and make a vector describing them.
2755 The elements of the vector are strings, one per switch given.
2756 If a switch uses following arguments, then the `part1' field
2757 is the switch itself and the `args' field
2758 is a null-terminated vector containing the following arguments.
2759 Bits in the `live_cond' field are:
2760 SWITCH_LIVE to indicate this switch is true in a conditional spec.
2761 SWITCH_FALSE to indicate this switch is overridden by a later switch.
2762 SWITCH_IGNORE to indicate this switch should be ignored (used in %<S).
2763 SWITCH_IGNORE_PERMANENTLY to indicate this switch should be ignored
2764 in all do_spec calls afterwards. Used for %<S from self specs.
2765 The `validated' field is nonzero if any spec has looked at this switch;
2766 if it remains zero at the end of the run, it must be meaningless. */
2768 #define SWITCH_LIVE 0x1
2769 #define SWITCH_FALSE 0x2
2770 #define SWITCH_IGNORE 0x4
2771 #define SWITCH_IGNORE_PERMANENTLY 0x8
2777 unsigned int live_cond;
2778 unsigned char validated;
2779 unsigned char ordering;
2782 static struct switchstr *switches;
2784 static int n_switches;
2786 static int n_switches_alloc;
2788 /* Set to zero if -fcompare-debug is disabled, positive if it's
2789 enabled and we're running the first compilation, negative if it's
2790 enabled and we're running the second compilation. For most of the
2791 time, it's in the range -1..1, but it can be temporarily set to 2
2792 or 3 to indicate that the -fcompare-debug flags didn't come from
2793 the command-line, but rather from the GCC_COMPARE_DEBUG environment
2794 variable, until a synthesized -fcompare-debug flag is added to the
2798 /* Set to nonzero if we've seen the -fcompare-debug-second flag. */
2799 int compare_debug_second;
2801 /* Set to the flags that should be passed to the second compilation in
2802 a -fcompare-debug compilation. */
2803 const char *compare_debug_opt;
2805 static struct switchstr *switches_debug_check[2];
2807 static int n_switches_debug_check[2];
2809 static int n_switches_alloc_debug_check[2];
2811 static char *debug_check_temp_file[2];
2813 /* Language is one of three things:
2815 1) The name of a real programming language.
2816 2) NULL, indicating that no one has figured out
2818 3) '*', indicating that the file should be passed
2823 const char *language;
2824 struct compiler *incompiler;
2829 /* Also a vector of input files specified. */
2831 static struct infile *infiles;
2835 static int n_infiles_alloc;
2837 /* True if multiple input files are being compiled to a single
2840 static bool combine_inputs;
2842 /* This counts the number of libraries added by lang_specific_driver, so that
2843 we can tell if there were any user supplied any files or libraries. */
2845 static int added_libraries;
2847 /* And a vector of corresponding output files is made up later. */
2849 const char **outfiles;
2851 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2853 /* Convert NAME to a new name if it is the standard suffix. DO_EXE
2854 is true if we should look for an executable suffix. DO_OBJ
2855 is true if we should look for an object suffix. */
2858 convert_filename (const char *name, int do_exe ATTRIBUTE_UNUSED,
2859 int do_obj ATTRIBUTE_UNUSED)
2861 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2869 len = strlen (name);
2871 #ifdef HAVE_TARGET_OBJECT_SUFFIX
2872 /* Convert x.o to x.obj if TARGET_OBJECT_SUFFIX is ".obj". */
2873 if (do_obj && len > 2
2874 && name[len - 2] == '.'
2875 && name[len - 1] == 'o')
2877 obstack_grow (&obstack, name, len - 2);
2878 obstack_grow0 (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX));
2879 name = XOBFINISH (&obstack, const char *);
2883 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2884 /* If there is no filetype, make it the executable suffix (which includes
2885 the "."). But don't get confused if we have just "-o". */
2886 if (! do_exe || TARGET_EXECUTABLE_SUFFIX[0] == 0 || (len == 2 && name[0] == '-'))
2889 for (i = len - 1; i >= 0; i--)
2890 if (IS_DIR_SEPARATOR (name[i]))
2893 for (i++; i < len; i++)
2897 obstack_grow (&obstack, name, len);
2898 obstack_grow0 (&obstack, TARGET_EXECUTABLE_SUFFIX,
2899 strlen (TARGET_EXECUTABLE_SUFFIX));
2900 name = XOBFINISH (&obstack, const char *);
2907 /* Display the command line switches accepted by gcc. */
2911 printf (_("Usage: %s [options] file...\n"), progname);
2912 fputs (_("Options:\n"), stdout);
2914 fputs (_(" -pass-exit-codes Exit with highest error code from a phase\n"), stdout);
2915 fputs (_(" --help Display this information\n"), stdout);
2916 fputs (_(" --target-help Display target specific command line options\n"), stdout);
2917 fputs (_(" --help={target|optimizers|warnings|params|[^]{joined|separate|undocumented}}[,...]\n"), stdout);
2918 fputs (_(" Display specific types of command line options\n"), stdout);
2920 fputs (_(" (Use '-v --help' to display command line options of sub-processes)\n"), stdout);
2921 fputs (_(" --version Display compiler version information\n"), stdout);
2922 fputs (_(" -dumpspecs Display all of the built in spec strings\n"), stdout);
2923 fputs (_(" -dumpversion Display the version of the compiler\n"), stdout);
2924 fputs (_(" -dumpmachine Display the compiler's target processor\n"), stdout);
2925 fputs (_(" -print-search-dirs Display the directories in the compiler's search path\n"), stdout);
2926 fputs (_(" -print-libgcc-file-name Display the name of the compiler's companion library\n"), stdout);
2927 fputs (_(" -print-file-name=<lib> Display the full path to library <lib>\n"), stdout);
2928 fputs (_(" -print-prog-name=<prog> Display the full path to compiler component <prog>\n"), stdout);
2929 fputs (_(" -print-multi-directory Display the root directory for versions of libgcc\n"), stdout);
2931 -print-multi-lib Display the mapping between command line options and\n\
2932 multiple library search directories\n"), stdout);
2933 fputs (_(" -print-multi-os-directory Display the relative path to OS libraries\n"), stdout);
2934 fputs (_(" -print-sysroot Display the target libraries directory\n"), stdout);
2935 fputs (_(" -print-sysroot-headers-suffix Display the sysroot suffix used to find headers\n"), stdout);
2936 fputs (_(" -Wa,<options> Pass comma-separated <options> on to the assembler\n"), stdout);
2937 fputs (_(" -Wp,<options> Pass comma-separated <options> on to the preprocessor\n"), stdout);
2938 fputs (_(" -Wl,<options> Pass comma-separated <options> on to the linker\n"), stdout);
2939 fputs (_(" -Xassembler <arg> Pass <arg> on to the assembler\n"), stdout);
2940 fputs (_(" -Xpreprocessor <arg> Pass <arg> on to the preprocessor\n"), stdout);
2941 fputs (_(" -Xlinker <arg> Pass <arg> on to the linker\n"), stdout);
2942 fputs (_(" -save-temps Do not delete intermediate files\n"), stdout);
2943 fputs (_(" -save-temps=<arg> Do not delete intermediate files\n"), stdout);
2945 -no-canonical-prefixes Do not canonicalize paths when building relative\n\
2946 prefixes to other gcc components\n"), stdout);
2947 fputs (_(" -pipe Use pipes rather than intermediate files\n"), stdout);
2948 fputs (_(" -time Time the execution of each subprocess\n"), stdout);
2949 fputs (_(" -specs=<file> Override built-in specs with the contents of <file>\n"), stdout);
2950 fputs (_(" -std=<standard> Assume that the input sources are for <standard>\n"), stdout);
2952 --sysroot=<directory> Use <directory> as the root directory for headers\n\
2953 and libraries\n"), stdout);
2954 fputs (_(" -B <directory> Add <directory> to the compiler's search paths\n"), stdout);
2955 fputs (_(" -v Display the programs invoked by the compiler\n"), stdout);
2956 fputs (_(" -### Like -v but options quoted and commands not executed\n"), stdout);
2957 fputs (_(" -E Preprocess only; do not compile, assemble or link\n"), stdout);
2958 fputs (_(" -S Compile only; do not assemble or link\n"), stdout);
2959 fputs (_(" -c Compile and assemble, but do not link\n"), stdout);
2960 fputs (_(" -o <file> Place the output into <file>\n"), stdout);
2962 -x <language> Specify the language of the following input files\n\
2963 Permissible languages include: c c++ assembler none\n\
2964 'none' means revert to the default behavior of\n\
2965 guessing the language based on the file's extension\n\
2969 \nOptions starting with -g, -f, -m, -O, -W, or --param are automatically\n\
2970 passed on to the various sub-processes invoked by %s. In order to pass\n\
2971 other options on to these processes the -W<letter> options must be used.\n\
2974 /* The rest of the options are displayed by invocations of the various
2979 add_preprocessor_option (const char *option, int len)
2981 n_preprocessor_options++;
2983 if (! preprocessor_options)
2984 preprocessor_options = XNEWVEC (char *, n_preprocessor_options);
2986 preprocessor_options = XRESIZEVEC (char *, preprocessor_options,
2987 n_preprocessor_options);
2989 preprocessor_options [n_preprocessor_options - 1] =
2990 save_string (option, len);
2994 add_assembler_option (const char *option, int len)
2996 n_assembler_options++;
2998 if (! assembler_options)
2999 assembler_options = XNEWVEC (char *, n_assembler_options);
3001 assembler_options = XRESIZEVEC (char *, assembler_options,
3002 n_assembler_options);
3004 assembler_options [n_assembler_options - 1] = save_string (option, len);
3008 add_linker_option (const char *option, int len)
3012 if (! linker_options)
3013 linker_options = XNEWVEC (char *, n_linker_options);
3015 linker_options = XRESIZEVEC (char *, linker_options, n_linker_options);
3017 linker_options [n_linker_options - 1] = save_string (option, len);
3020 /* Allocate space for an input file in infiles. */
3025 if (n_infiles_alloc == 0)
3027 n_infiles_alloc = 16;
3028 infiles = XNEWVEC (struct infile, n_infiles_alloc);
3030 else if (n_infiles_alloc == n_infiles)
3032 n_infiles_alloc *= 2;
3033 infiles = XRESIZEVEC (struct infile, infiles, n_infiles_alloc);
3037 /* Store an input file with the given NAME and LANGUAGE in
3041 add_infile (const char *name, const char *language)
3044 infiles[n_infiles].name = name;
3045 infiles[n_infiles++].language = language;
3048 /* Allocate space for a switch in switches. */
3053 if (n_switches_alloc == 0)
3055 n_switches_alloc = 16;
3056 switches = XNEWVEC (struct switchstr, n_switches_alloc);
3058 else if (n_switches_alloc == n_switches)
3060 n_switches_alloc *= 2;
3061 switches = XRESIZEVEC (struct switchstr, switches, n_switches_alloc);
3065 /* Save an option OPT with N_ARGS arguments in array ARGS, marking it
3066 as validated if VALIDATED. */
3069 save_switch (const char *opt, size_t n_args, const char *const *args,
3073 switches[n_switches].part1 = opt + 1;
3075 switches[n_switches].args = 0;
3078 switches[n_switches].args = XNEWVEC (const char *, n_args + 1);
3079 memcpy (switches[n_switches].args, args, n_args * sizeof (const char *));
3080 switches[n_switches].args[n_args] = NULL;
3083 switches[n_switches].live_cond = 0;
3084 switches[n_switches].validated = validated;
3085 switches[n_switches].ordering = 0;
3089 /* Handle an option DECODED that is unknown to the option-processing
3090 machinery, but may be known to specs. */
3093 driver_unknown_option_callback (const struct cl_decoded_option *decoded)
3095 save_switch (decoded->canonical_option[0],
3096 decoded->canonical_option_num_elements - 1,
3097 &decoded->canonical_option[1], false);
3102 /* Handle an option DECODED that is not marked as CL_DRIVER.
3103 LANG_MASK will always be CL_DRIVER. */
3106 driver_wrong_lang_callback (const struct cl_decoded_option *decoded,
3107 unsigned int lang_mask ATTRIBUTE_UNUSED)
3109 /* At this point, non-driver options are accepted (and expected to
3110 be passed down by specs) unless marked to be rejected by the
3111 driver. Options to be rejected by the driver but accepted by the
3112 compilers proper are treated just like completely unknown
3114 const struct cl_option *option = &cl_options[decoded->opt_index];
3116 if (option->flags & CL_REJECT_DRIVER)
3117 error ("unrecognized command line option %qs",
3118 decoded->orig_option_with_args_text);
3120 driver_unknown_option_callback (decoded);
3123 /* Note that an option (index OPT_INDEX, argument ARG, value VALUE)
3124 has been successfully handled with a handler for mask MASK. */
3127 driver_post_handling_callback (const struct cl_decoded_option *decoded ATTRIBUTE_UNUSED,
3128 unsigned int mask ATTRIBUTE_UNUSED)
3130 /* Nothing to do here. */
3133 static const char *spec_lang = 0;
3134 static int last_language_n_infiles;
3136 /* Handle a driver option; arguments and return value as for
3140 driver_handle_option (struct gcc_options *opts,
3141 struct gcc_options *opts_set,
3142 const struct cl_decoded_option *decoded,
3143 unsigned int lang_mask ATTRIBUTE_UNUSED, int kind,
3145 const struct cl_option_handlers *handlers ATTRIBUTE_UNUSED,
3146 diagnostic_context *dc)
3148 size_t opt_index = decoded->opt_index;
3149 const char *arg = decoded->arg;
3150 const char *compare_debug_replacement_opt;
3151 int value = decoded->value;
3152 bool validated = false;
3153 bool do_save = true;
3155 gcc_assert (opts == &global_options);
3156 gcc_assert (opts_set == &global_options_set);
3157 gcc_assert (kind == DK_UNSPECIFIED);
3158 gcc_assert (loc == UNKNOWN_LOCATION);
3159 gcc_assert (dc == global_dc);
3165 struct spec_list *sl;
3167 for (sl = specs; sl; sl = sl->next)
3168 printf ("*%s:\n%s\n\n", sl->name, *(sl->ptr_spec));
3169 if (link_command_spec)
3170 printf ("*link_command:\n%s\n\n", link_command_spec);
3174 case OPT_dumpversion:
3175 printf ("%s\n", spec_version);
3178 case OPT_dumpmachine:
3179 printf ("%s\n", spec_machine);
3185 /* CPP driver cannot obtain switch from cc1_options. */
3187 add_preprocessor_option ("--version", strlen ("--version"));
3188 add_assembler_option ("--version", strlen ("--version"));
3189 add_linker_option ("--version", strlen ("--version"));
3193 print_help_list = 1;
3195 /* CPP driver cannot obtain switch from cc1_options. */
3197 add_preprocessor_option ("--help", 6);
3198 add_assembler_option ("--help", 6);
3199 add_linker_option ("--help", 6);
3203 print_subprocess_help = 2;
3206 case OPT__target_help:
3207 print_subprocess_help = 1;
3209 /* CPP driver cannot obtain switch from cc1_options. */
3211 add_preprocessor_option ("--target-help", 13);
3212 add_assembler_option ("--target-help", 13);
3213 add_linker_option ("--target-help", 13);
3216 case OPT_pass_exit_codes:
3217 case OPT_print_search_dirs:
3218 case OPT_print_file_name_:
3219 case OPT_print_prog_name_:
3220 case OPT_print_multi_lib:
3221 case OPT_print_multi_directory:
3222 case OPT_print_sysroot:
3223 case OPT_print_multi_os_directory:
3224 case OPT_print_sysroot_headers_suffix:
3227 /* These options set the variables specified in common.opt
3228 automatically, and do not need to be saved for spec
3233 case OPT_print_libgcc_file_name:
3234 print_file_name = "libgcc.a";
3238 case OPT_fcompare_debug_second:
3239 compare_debug_second = 1;
3242 case OPT_fcompare_debug:
3246 compare_debug_replacement_opt = "-fcompare-debug=";
3248 goto compare_debug_with_arg;
3251 compare_debug_replacement_opt = "-fcompare-debug=-gtoggle";
3253 goto compare_debug_with_arg;
3260 case OPT_fcompare_debug_:
3261 compare_debug_replacement_opt = decoded->canonical_option[0];
3262 compare_debug_with_arg:
3263 gcc_assert (decoded->canonical_option_num_elements == 1);
3264 gcc_assert (arg != NULL);
3269 if (compare_debug < 0)
3270 compare_debug_opt = NULL;
3272 compare_debug_opt = arg;
3273 save_switch (compare_debug_replacement_opt, 0, NULL, validated);
3279 /* Pass the rest of this option to the assembler. */
3281 /* Split the argument at commas. */
3283 for (j = 0; arg[j]; j++)
3286 add_assembler_option (arg + prev, j - prev);
3290 /* Record the part after the last comma. */
3291 add_assembler_option (arg + prev, j - prev);
3299 /* Pass the rest of this option to the preprocessor. */
3301 /* Split the argument at commas. */
3303 for (j = 0; arg[j]; j++)
3306 add_preprocessor_option (arg + prev, j - prev);
3310 /* Record the part after the last comma. */
3311 add_preprocessor_option (arg + prev, j - prev);
3319 /* Split the argument at commas. */
3321 for (j = 0; arg[j]; j++)
3324 add_infile (save_string (arg + prev, j - prev), "*");
3327 /* Record the part after the last comma. */
3328 add_infile (arg + prev, "*");
3334 add_infile (arg, "*");
3338 case OPT_Xpreprocessor:
3339 add_preprocessor_option (arg, strlen (arg));
3343 case OPT_Xassembler:
3344 add_assembler_option (arg, strlen (arg));
3349 /* POSIX allows separation of -l and the lib arg; canonicalize
3350 by concatenating -l with its arg */
3351 add_infile (concat ("-l", arg, NULL), "*");
3356 /* Similarly, canonicalize -L for linkers that may not accept
3357 separate arguments. */
3358 save_switch (concat ("-L", arg, NULL), 0, NULL, validated);
3361 case OPT_save_temps:
3362 save_temps_flag = SAVE_TEMPS_CWD;
3366 case OPT_save_temps_:
3367 if (strcmp (arg, "cwd") == 0)
3368 save_temps_flag = SAVE_TEMPS_CWD;
3369 else if (strcmp (arg, "obj") == 0
3370 || strcmp (arg, "object") == 0)
3371 save_temps_flag = SAVE_TEMPS_OBJ;
3373 fatal_error ("%qs is an unknown -save-temps option",
3374 decoded->orig_option_with_args_text);
3377 case OPT_no_canonical_prefixes:
3378 /* Already handled as a special case, so ignored here. */
3384 /* These options set the variables specified in common.opt
3385 automatically, but do need to be saved for spec
3391 struct user_specs *user = XNEW (struct user_specs);
3393 user->next = (struct user_specs *) 0;
3394 user->filename = arg;
3395 if (user_specs_tail)
3396 user_specs_tail->next = user;
3398 user_specs_head = user;
3399 user_specs_tail = user;
3405 target_system_root = arg;
3406 target_system_root_changed = 1;
3411 if (report_times_to_file)
3412 fclose (report_times_to_file);
3413 report_times_to_file = fopen (arg, "a");
3419 This is similar to -v except that there is no execution
3420 of the commands and the echoed arguments are quoted. It
3421 is intended for use in shell scripts to capture the
3422 driver-generated command line. */
3423 verbose_only_flag++;
3430 size_t len = strlen (arg);
3432 /* Catch the case where the user has forgotten to append a
3433 directory separator to the path. Note, they may be using
3434 -B to add an executable name prefix, eg "i386-elf-", in
3435 order to distinguish between multiple installations of
3436 GCC in the same directory. Hence we must check to see
3437 if appending a directory separator actually makes a
3438 valid directory name. */
3439 if (!IS_DIR_SEPARATOR (arg[len - 1])
3440 && is_directory (arg, false))
3442 char *tmp = XNEWVEC (char, len + 2);
3444 tmp[len] = DIR_SEPARATOR;
3449 add_prefix (&exec_prefixes, arg, NULL,
3450 PREFIX_PRIORITY_B_OPT, 0, 0);
3451 add_prefix (&startfile_prefixes, arg, NULL,
3452 PREFIX_PRIORITY_B_OPT, 0, 0);
3453 add_prefix (&include_prefixes, arg, NULL,
3454 PREFIX_PRIORITY_B_OPT, 0, 0);
3461 if (!strcmp (spec_lang, "none"))
3462 /* Suppress the warning if -xnone comes after the last input
3463 file, because alternate command interfaces like g++ might
3464 find it useful to place -xnone after each input file. */
3467 last_language_n_infiles = n_infiles;
3473 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX) || defined(HAVE_TARGET_OBJECT_SUFFIX)
3474 arg = convert_filename (arg, ! have_c, 0);
3476 /* Save the output name in case -save-temps=obj was used. */
3477 save_temps_prefix = xstrdup (arg);
3478 /* On some systems, ld cannot handle "-o" without a space. So
3479 split the option from its argument. */
3480 save_switch ("-o", 1, &arg, validated);
3483 case OPT_static_libgcc:
3484 case OPT_shared_libgcc:
3485 case OPT_static_libgfortran:
3486 case OPT_static_libstdc__:
3487 /* These are always valid, since gcc.c itself understands the
3488 first two, gfortranspec.c understands -static-libgfortran and
3489 g++spec.c understands -static-libstdc++ */
3494 /* Various driver options need no special processing at this
3495 point, having been handled in a prescan above or being
3496 handled by specs. */
3501 save_switch (decoded->canonical_option[0],
3502 decoded->canonical_option_num_elements - 1,
3503 &decoded->canonical_option[1], validated);
3507 /* Put the driver's standard set of option handlers in *HANDLERS. */
3510 set_option_handlers (struct cl_option_handlers *handlers)
3512 handlers->unknown_option_callback = driver_unknown_option_callback;
3513 handlers->wrong_lang_callback = driver_wrong_lang_callback;
3514 handlers->post_handling_callback = driver_post_handling_callback;
3515 handlers->num_handlers = 1;
3516 handlers->handlers[0].handler = driver_handle_option;
3517 handlers->handlers[0].mask = CL_DRIVER;
3520 /* Create the vector `switches' and its contents.
3521 Store its length in `n_switches'. */
3524 process_command (unsigned int decoded_options_count,
3525 struct cl_decoded_option *decoded_options)
3529 const char *tooldir_prefix;
3530 char *(*get_relative_prefix) (const char *, const char *,
3531 const char *) = NULL;
3532 struct cl_option_handlers handlers;
3535 GET_ENVIRONMENT (gcc_exec_prefix, "GCC_EXEC_PREFIX");
3539 added_libraries = 0;
3541 /* Figure compiler version from version string. */
3543 compiler_version = temp1 = xstrdup (version_string);
3545 for (; *temp1; ++temp1)
3554 /* Handle any -no-canonical-prefixes flag early, to assign the function
3555 that builds relative prefixes. This function creates default search
3556 paths that are needed later in normal option handling. */
3558 for (j = 1; j < decoded_options_count; j++)
3560 if (decoded_options[j].opt_index == OPT_no_canonical_prefixes)
3562 get_relative_prefix = make_relative_prefix_ignore_links;
3566 if (! get_relative_prefix)
3567 get_relative_prefix = make_relative_prefix;
3569 /* Set up the default search paths. If there is no GCC_EXEC_PREFIX,
3570 see if we can create it from the pathname specified in
3571 decoded_options[0].arg. */
3573 gcc_libexec_prefix = standard_libexec_prefix;
3575 /* FIXME: make_relative_prefix doesn't yet work for VMS. */
3576 if (!gcc_exec_prefix)
3578 gcc_exec_prefix = get_relative_prefix (decoded_options[0].arg,
3579 standard_bindir_prefix,
3580 standard_exec_prefix);
3581 gcc_libexec_prefix = get_relative_prefix (decoded_options[0].arg,
3582 standard_bindir_prefix,
3583 standard_libexec_prefix);
3584 if (gcc_exec_prefix)
3585 xputenv (concat ("GCC_EXEC_PREFIX=", gcc_exec_prefix, NULL));
3589 /* make_relative_prefix requires a program name, but
3590 GCC_EXEC_PREFIX is typically a directory name with a trailing
3591 / (which is ignored by make_relative_prefix), so append a
3593 char *tmp_prefix = concat (gcc_exec_prefix, "gcc", NULL);
3594 gcc_libexec_prefix = get_relative_prefix (tmp_prefix,
3595 standard_exec_prefix,
3596 standard_libexec_prefix);
3598 /* The path is unrelocated, so fallback to the original setting. */
3599 if (!gcc_libexec_prefix)
3600 gcc_libexec_prefix = standard_libexec_prefix;
3606 /* From this point onward, gcc_exec_prefix is non-null if the toolchain
3607 is relocated. The toolchain was either relocated using GCC_EXEC_PREFIX
3608 or an automatically created GCC_EXEC_PREFIX from
3609 decoded_options[0].arg. */
3611 /* Do language-specific adjustment/addition of flags. */
3612 lang_specific_driver (&decoded_options, &decoded_options_count,
3615 if (gcc_exec_prefix)
3617 int len = strlen (gcc_exec_prefix);
3619 if (len > (int) sizeof ("/lib/gcc/") - 1
3620 && (IS_DIR_SEPARATOR (gcc_exec_prefix[len-1])))
3622 temp = gcc_exec_prefix + len - sizeof ("/lib/gcc/") + 1;
3623 if (IS_DIR_SEPARATOR (*temp)
3624 && strncmp (temp + 1, "lib", 3) == 0
3625 && IS_DIR_SEPARATOR (temp[4])
3626 && strncmp (temp + 5, "gcc", 3) == 0)
3627 len -= sizeof ("/lib/gcc/") - 1;
3630 set_std_prefix (gcc_exec_prefix, len);
3631 add_prefix (&exec_prefixes, gcc_libexec_prefix, "GCC",
3632 PREFIX_PRIORITY_LAST, 0, 0);
3633 add_prefix (&startfile_prefixes, gcc_exec_prefix, "GCC",
3634 PREFIX_PRIORITY_LAST, 0, 0);
3637 /* COMPILER_PATH and LIBRARY_PATH have values
3638 that are lists of directory names with colons. */
3640 GET_ENVIRONMENT (temp, "COMPILER_PATH");
3643 const char *startp, *endp;
3644 char *nstore = (char *) alloca (strlen (temp) + 3);
3646 startp = endp = temp;
3649 if (*endp == PATH_SEPARATOR || *endp == 0)
3651 strncpy (nstore, startp, endp - startp);
3653 strcpy (nstore, concat (".", dir_separator_str, NULL));
3654 else if (!IS_DIR_SEPARATOR (endp[-1]))
3656 nstore[endp - startp] = DIR_SEPARATOR;
3657 nstore[endp - startp + 1] = 0;
3660 nstore[endp - startp] = 0;
3661 add_prefix (&exec_prefixes, nstore, 0,
3662 PREFIX_PRIORITY_LAST, 0, 0);
3663 add_prefix (&include_prefixes, nstore, 0,
3664 PREFIX_PRIORITY_LAST, 0, 0);
3667 endp = startp = endp + 1;
3674 GET_ENVIRONMENT (temp, LIBRARY_PATH_ENV);
3675 if (temp && *cross_compile == '0')
3677 const char *startp, *endp;
3678 char *nstore = (char *) alloca (strlen (temp) + 3);
3680 startp = endp = temp;
3683 if (*endp == PATH_SEPARATOR || *endp == 0)
3685 strncpy (nstore, startp, endp - startp);
3687 strcpy (nstore, concat (".", dir_separator_str, NULL));
3688 else if (!IS_DIR_SEPARATOR (endp[-1]))
3690 nstore[endp - startp] = DIR_SEPARATOR;
3691 nstore[endp - startp + 1] = 0;
3694 nstore[endp - startp] = 0;
3695 add_prefix (&startfile_prefixes, nstore, NULL,
3696 PREFIX_PRIORITY_LAST, 0, 1);
3699 endp = startp = endp + 1;
3706 /* Use LPATH like LIBRARY_PATH (for the CMU build program). */
3707 GET_ENVIRONMENT (temp, "LPATH");
3708 if (temp && *cross_compile == '0')
3710 const char *startp, *endp;
3711 char *nstore = (char *) alloca (strlen (temp) + 3);
3713 startp = endp = temp;
3716 if (*endp == PATH_SEPARATOR || *endp == 0)
3718 strncpy (nstore, startp, endp - startp);
3720 strcpy (nstore, concat (".", dir_separator_str, NULL));
3721 else if (!IS_DIR_SEPARATOR (endp[-1]))
3723 nstore[endp - startp] = DIR_SEPARATOR;
3724 nstore[endp - startp + 1] = 0;
3727 nstore[endp - startp] = 0;
3728 add_prefix (&startfile_prefixes, nstore, NULL,
3729 PREFIX_PRIORITY_LAST, 0, 1);
3732 endp = startp = endp + 1;
3739 /* Process the options and store input files and switches in their
3742 last_language_n_infiles = -1;
3744 set_option_handlers (&handlers);
3746 for (j = 1; j < decoded_options_count; j++)
3748 switch (decoded_options[j].opt_index)
3760 for (j = 1; j < decoded_options_count; j++)
3762 if (decoded_options[j].opt_index == OPT_SPECIAL_input_file)
3764 const char *arg = decoded_options[j].arg;
3765 const char *p = strrchr (arg, '@');
3769 #ifdef HAVE_TARGET_OBJECT_SUFFIX
3770 arg = convert_filename (arg, 0, access (arg, F_OK));
3772 /* For LTO static archive support we handle input file
3773 specifications that are composed of a filename and
3774 an offset like FNAME@OFFSET. */
3777 && sscanf (p, "@%li%n", &offset, &consumed) >= 1
3778 && strlen (p) == (unsigned int)consumed)
3780 fname = (char *)xmalloc (p - arg + 1);
3781 memcpy (fname, arg, p - arg);
3782 fname[p - arg] = '\0';
3783 /* Only accept non-stdin and existing FNAME parts, otherwise
3784 try with the full name. */
3785 if (strcmp (fname, "-") == 0 || access (fname, F_OK) < 0)
3788 fname = xstrdup (arg);
3792 fname = xstrdup (arg);
3794 if (strcmp (fname, "-") != 0 && access (fname, F_OK) < 0)
3795 perror_with_name (fname);
3797 add_infile (arg, spec_lang);
3803 read_cmdline_option (&global_options, &global_options_set,
3804 decoded_options + j, UNKNOWN_LOCATION,
3805 CL_DRIVER, &handlers, global_dc);
3808 /* If -save-temps=obj and -o name, create the prefix to use for %b.
3809 Otherwise just make -save-temps=obj the same as -save-temps=cwd. */
3810 if (save_temps_flag == SAVE_TEMPS_OBJ && save_temps_prefix != NULL)
3812 save_temps_length = strlen (save_temps_prefix);
3813 temp = strrchr (lbasename (save_temps_prefix), '.');
3816 save_temps_length -= strlen (temp);
3817 save_temps_prefix[save_temps_length] = '\0';
3821 else if (save_temps_prefix != NULL)
3823 free (save_temps_prefix);
3824 save_temps_prefix = NULL;
3827 if (save_temps_flag && use_pipes)
3829 /* -save-temps overrides -pipe, so that temp files are produced */
3830 if (save_temps_flag)
3831 warning (0, "-pipe ignored because -save-temps specified");
3837 const char *gcd = getenv ("GCC_COMPARE_DEBUG");
3839 if (gcd && gcd[0] == '-')
3842 compare_debug_opt = gcd;
3844 else if (gcd && *gcd && strcmp (gcd, "0"))
3847 compare_debug_opt = "-gtoggle";
3850 else if (compare_debug < 0)
3853 gcc_assert (!compare_debug_opt);
3856 /* Set up the search paths. We add directories that we expect to
3857 contain GNU Toolchain components before directories specified by
3858 the machine description so that we will find GNU components (like
3859 the GNU assembler) before those of the host system. */
3861 /* If we don't know where the toolchain has been installed, use the
3862 configured-in locations. */
3863 if (!gcc_exec_prefix)
3866 add_prefix (&exec_prefixes, standard_libexec_prefix, "GCC",
3867 PREFIX_PRIORITY_LAST, 1, 0);
3868 add_prefix (&exec_prefixes, standard_libexec_prefix, "BINUTILS",
3869 PREFIX_PRIORITY_LAST, 2, 0);
3870 add_prefix (&exec_prefixes, standard_exec_prefix, "BINUTILS",
3871 PREFIX_PRIORITY_LAST, 2, 0);
3873 add_prefix (&startfile_prefixes, standard_exec_prefix, "BINUTILS",
3874 PREFIX_PRIORITY_LAST, 1, 0);
3877 gcc_assert (!IS_ABSOLUTE_PATH (tooldir_base_prefix));
3878 tooldir_prefix = concat (tooldir_base_prefix, spec_machine,
3879 dir_separator_str, NULL);
3881 /* Look for tools relative to the location from which the driver is
3882 running, or, if that is not available, the configured prefix. */
3884 = concat (gcc_exec_prefix ? gcc_exec_prefix : standard_exec_prefix,
3885 spec_machine, dir_separator_str,
3886 spec_version, dir_separator_str, tooldir_prefix, NULL);
3888 add_prefix (&exec_prefixes,
3889 concat (tooldir_prefix, "bin", dir_separator_str, NULL),
3890 "BINUTILS", PREFIX_PRIORITY_LAST, 0, 0);
3891 add_prefix (&startfile_prefixes,
3892 concat (tooldir_prefix, "lib", dir_separator_str, NULL),
3893 "BINUTILS", PREFIX_PRIORITY_LAST, 0, 1);
3895 #if defined(TARGET_SYSTEM_ROOT_RELOCATABLE) && !defined(VMS)
3896 /* If the normal TARGET_SYSTEM_ROOT is inside of $exec_prefix,
3897 then consider it to relocate with the rest of the GCC installation
3898 if GCC_EXEC_PREFIX is set.
3899 ``make_relative_prefix'' is not compiled for VMS, so don't call it. */
3900 if (target_system_root && !target_system_root_changed && gcc_exec_prefix)
3902 char *tmp_prefix = get_relative_prefix (decoded_options[0].arg,
3903 standard_bindir_prefix,
3904 target_system_root);
3905 if (tmp_prefix && access_check (tmp_prefix, F_OK) == 0)
3907 target_system_root = tmp_prefix;
3908 target_system_root_changed = 1;
3913 /* More prefixes are enabled in main, after we read the specs file
3914 and determine whether this is cross-compilation or not. */
3916 if (n_infiles == last_language_n_infiles && spec_lang != 0)
3917 warning (0, "%<-x %s%> after last input file has no effect", spec_lang);
3919 if (compare_debug == 2 || compare_debug == 3)
3922 switches[n_switches].part1 = concat ("fcompare-debug=",
3925 switches[n_switches].args = 0;
3926 switches[n_switches].live_cond = 0;
3927 switches[n_switches].validated = 0;
3928 switches[n_switches].ordering = 0;
3933 /* Ensure we only invoke each subprocess once. */
3934 if (print_subprocess_help || print_help_list || print_version)
3938 /* Create a dummy input file, so that we can pass
3939 the help option on to the various sub-processes. */
3940 add_infile ("help-dummy", "c");
3944 switches[n_switches].part1 = 0;
3946 infiles[n_infiles].name = 0;
3949 /* Store switches not filtered out by %<S in spec in COLLECT_GCC_OPTIONS
3950 and place that in the environment. */
3953 set_collect_gcc_options (void)
3958 /* Build COLLECT_GCC_OPTIONS to have all of the options specified to
3960 obstack_grow (&collect_obstack, "COLLECT_GCC_OPTIONS=",
3961 sizeof ("COLLECT_GCC_OPTIONS=") - 1);
3964 for (i = 0; (int) i < n_switches; i++)
3966 const char *const *args;
3969 obstack_grow (&collect_obstack, " ", 1);
3973 /* Ignore elided switches. */
3974 if ((switches[i].live_cond & SWITCH_IGNORE) != 0)
3977 obstack_grow (&collect_obstack, "'-", 2);
3978 q = switches[i].part1;
3979 while ((p = strchr (q, '\'')))
3981 obstack_grow (&collect_obstack, q, p - q);
3982 obstack_grow (&collect_obstack, "'\\''", 4);
3985 obstack_grow (&collect_obstack, q, strlen (q));
3986 obstack_grow (&collect_obstack, "'", 1);
3988 for (args = switches[i].args; args && *args; args++)
3990 obstack_grow (&collect_obstack, " '", 2);
3992 while ((p = strchr (q, '\'')))
3994 obstack_grow (&collect_obstack, q, p - q);
3995 obstack_grow (&collect_obstack, "'\\''", 4);
3998 obstack_grow (&collect_obstack, q, strlen (q));
3999 obstack_grow (&collect_obstack, "'", 1);
4002 obstack_grow (&collect_obstack, "\0", 1);
4003 xputenv (XOBFINISH (&collect_obstack, char *));
4006 /* Process a spec string, accumulating and running commands. */
4008 /* These variables describe the input file name.
4009 input_file_number is the index on outfiles of this file,
4010 so that the output file name can be stored for later use by %o.
4011 input_basename is the start of the part of the input file
4012 sans all directory names, and basename_length is the number
4013 of characters starting there excluding the suffix .c or whatever. */
4015 static const char *gcc_input_filename;
4016 static int input_file_number;
4017 size_t input_filename_length;
4018 static int basename_length;
4019 static int suffixed_basename_length;
4020 static const char *input_basename;
4021 static const char *input_suffix;
4022 #ifndef HOST_LACKS_INODE_NUMBERS
4023 static struct stat input_stat;
4025 static int input_stat_set;
4027 /* The compiler used to process the current input file. */
4028 static struct compiler *input_file_compiler;
4030 /* These are variables used within do_spec and do_spec_1. */
4032 /* Nonzero if an arg has been started and not yet terminated
4033 (with space, tab or newline). */
4034 static int arg_going;
4036 /* Nonzero means %d or %g has been seen; the next arg to be terminated
4037 is a temporary file name. */
4038 static int delete_this_arg;
4040 /* Nonzero means %w has been seen; the next arg to be terminated
4041 is the output file name of this compilation. */
4042 static int this_is_output_file;
4044 /* Nonzero means %s has been seen; the next arg to be terminated
4045 is the name of a library file and we should try the standard
4046 search dirs for it. */
4047 static int this_is_library_file;
4049 /* Nonzero means %T has been seen; the next arg to be terminated
4050 is the name of a linker script and we should try all of the
4051 standard search dirs for it. If it is found insert a --script
4052 command line switch and then substitute the full path in place,
4053 otherwise generate an error message. */
4054 static int this_is_linker_script;
4056 /* Nonzero means that the input of this command is coming from a pipe. */
4057 static int input_from_pipe;
4059 /* Nonnull means substitute this for any suffix when outputting a switches
4061 static const char *suffix_subst;
4063 /* If there is an argument being accumulated, terminate it and store it. */
4066 end_going_arg (void)
4072 obstack_1grow (&obstack, 0);
4073 string = XOBFINISH (&obstack, const char *);
4074 if (this_is_library_file)
4075 string = find_file (string);
4076 if (this_is_linker_script)
4078 char * full_script_path = find_a_file (&startfile_prefixes, string, R_OK, true);
4080 if (full_script_path == NULL)
4082 error ("unable to locate default linker script %qs in the library search paths", string);
4083 /* Script was not found on search path. */
4086 store_arg ("--script", false, false);
4087 string = full_script_path;
4089 store_arg (string, delete_this_arg, this_is_output_file);
4090 if (this_is_output_file)
4091 outfiles[input_file_number] = string;
4097 /* Parse the WRAPPER string which is a comma separated list of the command line
4098 and insert them into the beginning of argbuf. */
4101 insert_wrapper (const char *wrapper)
4105 char *buf = xstrdup (wrapper);
4114 while ((p = strchr (p, ',')) != NULL);
4116 if (argbuf_index + n >= argbuf_length)
4118 argbuf_length = argbuf_length * 2;
4119 while (argbuf_length < argbuf_index + n)
4121 argbuf = XRESIZEVEC (const char *, argbuf, argbuf_length);
4123 for (i = argbuf_index - 1; i >= 0; i--)
4124 argbuf[i + n] = argbuf[i];
4137 while ((p = strchr (p, ',')) != NULL);
4138 gcc_assert (i == n);
4142 /* Process the spec SPEC and run the commands specified therein.
4143 Returns 0 if the spec is successfully processed; -1 if failed. */
4146 do_spec (const char *spec)
4150 value = do_spec_2 (spec);
4152 /* Force out any unfinished command.
4153 If -pipe, this forces out the last command if it ended in `|'. */
4156 if (argbuf_index > 0 && !strcmp (argbuf[argbuf_index - 1], "|"))
4159 set_collect_gcc_options ();
4161 if (argbuf_index > 0)
4169 do_spec_2 (const char *spec)
4175 delete_this_arg = 0;
4176 this_is_output_file = 0;
4177 this_is_library_file = 0;
4178 this_is_linker_script = 0;
4179 input_from_pipe = 0;
4180 suffix_subst = NULL;
4182 result = do_spec_1 (spec, 0, NULL);
4190 /* Process the given spec string and add any new options to the end
4191 of the switches/n_switches array. */
4194 do_option_spec (const char *name, const char *spec)
4196 unsigned int i, value_count, value_len;
4197 const char *p, *q, *value;
4198 char *tmp_spec, *tmp_spec_p;
4200 if (configure_default_options[0].name == NULL)
4203 for (i = 0; i < ARRAY_SIZE (configure_default_options); i++)
4204 if (strcmp (configure_default_options[i].name, name) == 0)
4206 if (i == ARRAY_SIZE (configure_default_options))
4209 value = configure_default_options[i].value;
4210 value_len = strlen (value);
4212 /* Compute the size of the final spec. */
4215 while ((p = strstr (p, "%(VALUE)")) != NULL)
4221 /* Replace each %(VALUE) by the specified value. */
4222 tmp_spec = (char *) alloca (strlen (spec) + 1
4223 + value_count * (value_len - strlen ("%(VALUE)")));
4224 tmp_spec_p = tmp_spec;
4226 while ((p = strstr (q, "%(VALUE)")) != NULL)