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". */
33 /* A Short Introduction to Adding a Command-Line Option.
35 Before adding a command-line option, consider if it is really
36 necessary. Each additional command-line option adds complexity and
37 is difficult to remove in subsequent versions.
39 In the following, consider adding the command-line argument
42 1. Each command-line option is specified in the specs file. The
43 notation is described below in the comment entitled "The Specs
46 2. In this file, add an entry to "option_map" equating the long
47 `--' argument version and any shorter, single letter version. Read
48 the comments in the declaration of "struct option_map" for an
49 explanation. Do not omit the first `-'.
51 3. Look in the "specs" file to determine which program or option
52 list should be given the argument, e.g., "cc1_options". Add the
53 appropriate syntax for the shorter option version to the
54 corresponding "const char *" entry in this file. Omit the first
55 `-' from the option. For example, use `-bar', rather than `--bar'.
57 4. If the argument takes an argument, e.g., `--baz argument1',
58 modify either DEFAULT_SWITCH_TAKES_ARG or
59 DEFAULT_WORD_SWITCH_TAKES_ARG in gcc.h. Omit the first `-'
62 5. Document the option in this file's display_help(). If the
63 option is passed to a subprogram, modify its corresponding
64 function, e.g., cppinit.c:print_help() or toplev.c:display_help(),
67 6. Compile and test. Make sure that your new specs file is being
68 read. For example, use a debugger to investigate the value of
69 "specs_file" in main(). */
73 #include "coretypes.h"
74 #include "multilib.h" /* before tm.h */
77 #if ! defined( SIGCHLD ) && defined( SIGCLD )
78 # define SIGCHLD SIGCLD
85 #include "diagnostic.h"
90 # include <sys/mman.h>
92 /* This is on Solaris. */
93 # include <sys/types.h>
98 # define MAP_FAILED ((void *)-1)
101 /* By default there is no special suffix for target executables. */
102 /* FIXME: when autoconf is fixed, remove the host check - dj */
103 #if defined(TARGET_EXECUTABLE_SUFFIX) && defined(HOST_EXECUTABLE_SUFFIX)
104 #define HAVE_TARGET_EXECUTABLE_SUFFIX
107 /* By default there is no special suffix for host executables. */
108 #ifdef HOST_EXECUTABLE_SUFFIX
109 #define HAVE_HOST_EXECUTABLE_SUFFIX
111 #define HOST_EXECUTABLE_SUFFIX ""
114 /* By default, the suffix for target object files is ".o". */
115 #ifdef TARGET_OBJECT_SUFFIX
116 #define HAVE_TARGET_OBJECT_SUFFIX
118 #define TARGET_OBJECT_SUFFIX ".o"
121 static const char dir_separator_str[] = { DIR_SEPARATOR, 0 };
123 /* Most every one is fine with LIBRARY_PATH. For some, it conflicts. */
124 #ifndef LIBRARY_PATH_ENV
125 #define LIBRARY_PATH_ENV "LIBRARY_PATH"
129 #define kill(p,s) raise(s)
132 /* If a stage of compilation returns an exit status >= 1,
133 compilation of that file ceases. */
135 #define MIN_FATAL_STATUS 1
137 /* Flag set by cppspec.c to 1. */
140 /* Flag set to nonzero if an @file argument has been supplied to gcc. */
141 static bool at_file_supplied;
143 /* Definition of string containing the arguments given to configure. */
144 #include "configargs.h"
146 /* Flag saying to print the command line options understood by gcc and its
149 static int print_help_list;
151 /* Flag saying to print the version of gcc and its sub-processes. */
153 static int print_version;
155 /* Flag indicating whether we should print the command and arguments */
157 static int verbose_flag;
159 /* Flag indicating whether we should ONLY print the command and
160 arguments (like verbose_flag) without executing the command.
161 Displayed arguments are quoted so that the generated command
162 line is suitable for execution. This is intended for use in
163 shell scripts to capture the driver-generated command line. */
164 static int verbose_only_flag;
166 /* Flag indicating how to print command line options of sub-processes. */
168 static int print_subprocess_help;
170 /* Whether we should report subprocess execution times to a file. */
172 FILE *report_times_to_file = NULL;
174 /* Nonzero means place this string before uses of /, so that include
175 and library files can be found in an alternate location. */
177 #ifdef TARGET_SYSTEM_ROOT
178 static const char *target_system_root = TARGET_SYSTEM_ROOT;
180 static const char *target_system_root = 0;
183 /* Nonzero means pass the updated target_system_root to the compiler. */
185 static int target_system_root_changed;
187 /* Nonzero means append this string to target_system_root. */
189 static const char *target_sysroot_suffix = 0;
191 /* Nonzero means append this string to target_system_root for headers. */
193 static const char *target_sysroot_hdrs_suffix = 0;
195 /* Nonzero means write "temp" files in source directory
196 and use the source file's name in them, and don't delete them. */
198 static enum save_temps {
199 SAVE_TEMPS_NONE, /* no -save-temps */
200 SAVE_TEMPS_CWD, /* -save-temps in current directory */
201 SAVE_TEMPS_OBJ /* -save-temps in object directory */
204 /* Output file to use to get the object directory for -save-temps=obj */
205 static char *save_temps_prefix = 0;
206 static size_t save_temps_length = 0;
208 /* The compiler version. */
210 static const char *compiler_version;
212 /* The target version. */
214 static const char *const spec_version = DEFAULT_TARGET_VERSION;
216 /* The target machine. */
218 static const char *spec_machine = DEFAULT_TARGET_MACHINE;
220 /* Nonzero if cross-compiling.
221 When -b is used, the value comes from the `specs' file. */
223 #ifdef CROSS_DIRECTORY_STRUCTURE
224 static const char *cross_compile = "1";
226 static const char *cross_compile = "0";
229 /* Greatest exit code of sub-processes that has been encountered up to
231 static int greatest_status = 1;
233 /* This is the obstack which we use to allocate many strings. */
235 static struct obstack obstack;
237 /* This is the obstack to build an environment variable to pass to
238 collect2 that describes all of the relevant switches of what to
239 pass the compiler in building the list of pointers to constructors
242 static struct obstack collect_obstack;
244 /* Forward declaration for prototypes. */
248 static void init_spec (void);
249 static void store_arg (const char *, int, int);
250 static void insert_wrapper (const char *);
251 static char *load_specs (const char *);
252 static void read_specs (const char *, int);
253 static void set_spec (const char *, const char *);
254 static struct compiler *lookup_compiler (const char *, size_t, const char *);
255 static char *build_search_list (const struct path_prefix *, const char *,
257 static void xputenv (const char *);
258 static void putenv_from_prefixes (const struct path_prefix *, const char *,
260 static int access_check (const char *, int);
261 static char *find_a_file (const struct path_prefix *, const char *, int, bool);
262 static void add_prefix (struct path_prefix *, const char *, const char *,
264 static void add_sysrooted_prefix (struct path_prefix *, const char *,
265 const char *, int, int, int);
266 static void translate_options (int *, const char *const **);
267 static char *skip_whitespace (char *);
268 static void delete_if_ordinary (const char *);
269 static void delete_temp_files (void);
270 static void delete_failure_queue (void);
271 static void clear_failure_queue (void);
272 static int check_live_switch (int, int);
273 static const char *handle_braces (const char *);
274 static inline bool input_suffix_matches (const char *, const char *);
275 static inline bool switch_matches (const char *, const char *, int);
276 static inline void mark_matching_switches (const char *, const char *, int);
277 static inline void process_marked_switches (void);
278 static const char *process_brace_body (const char *, const char *, const char *, int, int);
279 static const struct spec_function *lookup_spec_function (const char *);
280 static const char *eval_spec_function (const char *, const char *);
281 static const char *handle_spec_function (const char *);
282 static char *save_string (const char *, int);
283 static void set_collect_gcc_options (void);
284 static int do_spec_1 (const char *, int, const char *);
285 static int do_spec_2 (const char *);
286 static void do_option_spec (const char *, const char *);
287 static void do_self_spec (const char *);
288 static const char *find_file (const char *);
289 static int is_directory (const char *, bool);
290 static const char *validate_switches (const char *);
291 static void validate_all_switches (void);
292 static inline void validate_switches_from_spec (const char *);
293 static void give_switch (int, int);
294 static int used_arg (const char *, int);
295 static int default_arg (const char *, int);
296 static void set_multilib_dir (void);
297 static void print_multilib_info (void);
298 static void perror_with_name (const char *);
299 static void display_help (void);
300 static void add_preprocessor_option (const char *, int);
301 static void add_assembler_option (const char *, int);
302 static void add_linker_option (const char *, int);
303 static void process_command (int, const char **);
304 static int execute (void);
305 static void alloc_args (void);
306 static void clear_args (void);
307 static void fatal_signal (int);
308 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
309 static void init_gcc_specs (struct obstack *, const char *, const char *,
312 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
313 static const char *convert_filename (const char *, int, int);
316 static const char *getenv_spec_function (int, const char **);
317 static const char *if_exists_spec_function (int, const char **);
318 static const char *if_exists_else_spec_function (int, const char **);
319 static const char *replace_outfile_spec_function (int, const char **);
320 static const char *remove_outfile_spec_function (int, const char **);
321 static const char *version_compare_spec_function (int, const char **);
322 static const char *include_spec_function (int, const char **);
323 static const char *find_file_spec_function (int, const char **);
324 static const char *find_plugindir_spec_function (int, const char **);
325 static const char *print_asm_header_spec_function (int, const char **);
326 static const char *compare_debug_dump_opt_spec_function (int, const char **);
327 static const char *compare_debug_self_opt_spec_function (int, const char **);
328 static const char *compare_debug_auxbase_opt_spec_function (int, const char **);
330 /* The Specs Language
332 Specs are strings containing lines, each of which (if not blank)
333 is made up of a program name, and arguments separated by spaces.
334 The program name must be exact and start from root, since no path
335 is searched and it is unreliable to depend on the current working directory.
336 Redirection of input or output is not supported; the subprograms must
337 accept filenames saying what files to read and write.
339 In addition, the specs can contain %-sequences to substitute variable text
340 or for conditional text. Here is a table of all defined %-sequences.
341 Note that spaces are not generated automatically around the results of
342 expanding these sequences; therefore, you can concatenate them together
343 or with constant text in a single argument.
345 %% substitute one % into the program name or argument.
346 %i substitute the name of the input file being processed.
347 %b substitute the basename of the input file being processed.
348 This is the substring up to (and not including) the last period
349 and not including the directory unless -save-temps was specified
350 to put temporaries in a different location.
351 %B same as %b, but include the file suffix (text after the last period).
353 substitute a file name that has suffix SUFFIX and is chosen
354 once per compilation, and mark the argument a la %d. To reduce
355 exposure to denial-of-service attacks, the file name is now
356 chosen in a way that is hard to predict even when previously
357 chosen file names are known. For example, `%g.s ... %g.o ... %g.s'
358 might turn into `ccUVUUAU.s ccXYAXZ12.o ccUVUUAU.s'. SUFFIX matches
359 the regexp "[.0-9A-Za-z]*%O"; "%O" is treated exactly as if it
360 had been pre-processed. Previously, %g was simply substituted
361 with a file name chosen once per compilation, without regard
362 to any appended suffix (which was therefore treated just like
363 ordinary text), making such attacks more likely to succeed.
365 like %g, but if -pipe is in effect, expands simply to "-".
367 like %g, but if -pipe is in effect, expands to nothing. (We have both
368 %| and %m to accommodate differences between system assemblers; see
369 the AS_NEEDS_DASH_FOR_PIPED_INPUT target macro.)
371 like %g, but generates a new temporary file name even if %uSUFFIX
374 substitutes the last file name generated with %uSUFFIX, generating a
375 new one if there is no such last file name. In the absence of any
376 %uSUFFIX, this is just like %gSUFFIX, except they don't share
377 the same suffix "space", so `%g.s ... %U.s ... %g.s ... %U.s'
378 would involve the generation of two distinct file names, one
379 for each `%g.s' and another for each `%U.s'. Previously, %U was
380 simply substituted with a file name chosen for the previous %u,
381 without regard to any appended suffix.
383 substitutes the name of the HOST_BIT_BUCKET, if any, and if it is
384 writable, and if save-temps is off; otherwise, substitute the name
385 of a temporary file, just like %u. This temporary file is not
386 meant for communication between processes, but rather as a junk
389 substitutes .SUFFIX for the suffixes of a matched switch's args when
390 it is subsequently output with %*. SUFFIX is terminated by the next
392 %d marks the argument containing or following the %d as a
393 temporary file name, so that that file will be deleted if GCC exits
394 successfully. Unlike %g, this contributes no text to the argument.
395 %w marks the argument containing or following the %w as the
396 "output file" of this compilation. This puts the argument
397 into the sequence of arguments that %o will substitute later.
398 %V indicates that this compilation produces no "output file".
400 like %{...} but mark last argument supplied within
401 as a file to be deleted on failure.
402 %o substitutes the names of all the output files, with spaces
403 automatically placed around them. You should write spaces
404 around the %o as well or the results are undefined.
405 %o is for use in the specs for running the linker.
406 Input files whose names have no recognized suffix are not compiled
407 at all, but they are included among the output files, so they will
409 %O substitutes the suffix for object files. Note that this is
410 handled specially when it immediately follows %g, %u, or %U
411 (with or without a suffix argument) because of the need for
412 those to form complete file names. The handling is such that
413 %O is treated exactly as if it had already been substituted,
414 except that %g, %u, and %U do not currently support additional
415 SUFFIX characters following %O as they would following, for
417 %I Substitute any of -iprefix (made from GCC_EXEC_PREFIX), -isysroot
418 (made from TARGET_SYSTEM_ROOT), -isystem (made from COMPILER_PATH
419 and -B options) and -imultilib as necessary.
420 %s current argument is the name of a library or startup file of some sort.
421 Search for that file in a standard list of directories
422 and substitute the full name found.
423 %eSTR Print STR as an error message. STR is terminated by a newline.
424 Use this when inconsistent options are detected.
425 %nSTR Print STR as a notice. STR is terminated by a newline.
426 %x{OPTION} Accumulate an option for %X.
427 %X Output the accumulated linker options specified by compilations.
428 %Y Output the accumulated assembler options specified by compilations.
429 %Z Output the accumulated preprocessor options specified by compilations.
430 %a process ASM_SPEC as a spec.
431 This allows config.h to specify part of the spec for running as.
432 %A process ASM_FINAL_SPEC as a spec. A capital A is actually
433 used here. This can be used to run a post-processor after the
434 assembler has done its job.
435 %D Dump out a -L option for each directory in startfile_prefixes.
436 If multilib_dir is set, extra entries are generated with it affixed.
437 %l process LINK_SPEC as a spec.
438 %L process LIB_SPEC as a spec.
439 %G process LIBGCC_SPEC as a spec.
440 %R Output the concatenation of target_system_root and
441 target_sysroot_suffix.
442 %S process STARTFILE_SPEC as a spec. A capital S is actually used here.
443 %E process ENDFILE_SPEC as a spec. A capital E is actually used here.
444 %C process CPP_SPEC as a spec.
445 %1 process CC1_SPEC as a spec.
446 %2 process CC1PLUS_SPEC as a spec.
447 %* substitute the variable part of a matched option. (See below.)
448 Note that each comma in the substituted string is replaced by
450 %<S remove all occurrences of -S from the command line.
451 Note - this command is position dependent. % commands in the
452 spec string before this one will see -S, % commands in the
453 spec string after this one will not.
454 %<S* remove all occurrences of all switches beginning with -S from the
457 Call the named function FUNCTION, passing it ARGS. ARGS is
458 first processed as a nested spec string, then split into an
459 argument vector in the usual fashion. The function returns
460 a string which is processed as if it had appeared literally
461 as part of the current spec.
462 %{S} substitutes the -S switch, if that switch was given to GCC.
463 If that switch was not specified, this substitutes nothing.
464 Here S is a metasyntactic variable.
465 %{S*} substitutes all the switches specified to GCC whose names start
466 with -S. This is used for -o, -I, etc; switches that take
467 arguments. GCC considers `-o foo' as being one switch whose
468 name starts with `o'. %{o*} would substitute this text,
469 including the space; thus, two arguments would be generated.
470 %{S*&T*} likewise, but preserve order of S and T options (the order
471 of S and T in the spec is not significant). Can be any number
472 of ampersand-separated variables; for each the wild card is
473 optional. Useful for CPP as %{D*&U*&A*}.
475 %{S:X} substitutes X, if the -S switch was given to GCC.
476 %{!S:X} substitutes X, if the -S switch was NOT given to GCC.
477 %{S*:X} substitutes X if one or more switches whose names start
478 with -S was given to GCC. Normally X is substituted only
479 once, no matter how many such switches appeared. However,
480 if %* appears somewhere in X, then X will be substituted
481 once for each matching switch, with the %* replaced by the
482 part of that switch that matched the '*'.
483 %{.S:X} substitutes X, if processing a file with suffix S.
484 %{!.S:X} substitutes X, if NOT processing a file with suffix S.
485 %{,S:X} substitutes X, if processing a file which will use spec S.
486 %{!,S:X} substitutes X, if NOT processing a file which will use spec S.
488 %{S|T:X} substitutes X if either -S or -T was given to GCC. This may be
489 combined with '!', '.', ',', and '*' as above binding stronger
491 If %* appears in X, all of the alternatives must be starred, and
492 only the first matching alternative is substituted.
493 %{S:X; if S was given to GCC, substitutes X;
494 T:Y; else if T was given to GCC, substitutes Y;
495 :D} else substitutes D. There can be as many clauses as you need.
496 This may be combined with '.', '!', ',', '|', and '*' as above.
498 %(Spec) processes a specification defined in a specs file as *Spec:
499 %[Spec] as above, but put __ around -D arguments
501 The conditional text X in a %{S:X} or similar construct may contain
502 other nested % constructs or spaces, or even newlines. They are
503 processed as usual, as described above. Trailing white space in X is
504 ignored. White space may also appear anywhere on the left side of the
505 colon in these constructs, except between . or * and the corresponding
508 The -O, -f, -m, and -W switches are handled specifically in these
509 constructs. If another value of -O or the negated form of a -f, -m, or
510 -W switch is found later in the command line, the earlier switch
511 value is ignored, except with {S*} where S is just one letter; this
512 passes all matching options.
514 The character | at the beginning of the predicate text is used to indicate
515 that a command should be piped to the following command, but only if -pipe
518 Note that it is built into GCC which switches take arguments and which
519 do not. You might think it would be useful to generalize this to
520 allow each compiler's spec to say which switches take arguments. But
521 this cannot be done in a consistent fashion. GCC cannot even decide
522 which input files have been specified without knowing which switches
523 take arguments, and it must know which input files to compile in order
524 to tell which compilers to run.
526 GCC also knows implicitly that arguments starting in `-l' are to be
527 treated as compiler output files, and passed to the linker in their
528 proper position among the other output files. */
530 /* Define the macros used for specs %a, %l, %L, %S, %C, %1. */
532 /* config.h can define ASM_SPEC to provide extra args to the assembler
533 or extra switch-translations. */
538 /* config.h can define ASM_FINAL_SPEC to run a post processor after
539 the assembler has run. */
540 #ifndef ASM_FINAL_SPEC
541 #define ASM_FINAL_SPEC ""
544 /* config.h can define CPP_SPEC to provide extra args to the C preprocessor
545 or extra switch-translations. */
550 /* config.h can define CC1_SPEC to provide extra args to cc1 and cc1plus
551 or extra switch-translations. */
556 /* config.h can define CC1PLUS_SPEC to provide extra args to cc1plus
557 or extra switch-translations. */
559 #define CC1PLUS_SPEC ""
562 /* config.h can define LINK_SPEC to provide extra args to the linker
563 or extra switch-translations. */
568 /* config.h can define LIB_SPEC to override the default libraries. */
570 #define LIB_SPEC "%{!shared:%{g*:-lg} %{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p}}"
575 /* XXX: valid only for GNU ld */
576 /* XXX: should exactly match hooks provided by libmudflap.a */
577 #define MFWRAP_SPEC " %{static: %{fmudflap|fmudflapth: \
578 --wrap=malloc --wrap=free --wrap=calloc --wrap=realloc\
579 --wrap=mmap --wrap=munmap --wrap=alloca\
580 } %{fmudflapth: --wrap=pthread_create\
581 }} %{fmudflap|fmudflapth: --wrap=main}"
584 #define MFLIB_SPEC "%{fmudflap|fmudflapth: -export-dynamic}"
587 /* config.h can define LIBGCC_SPEC to override how and when libgcc.a is
590 #if defined(REAL_LIBGCC_SPEC)
591 #define LIBGCC_SPEC REAL_LIBGCC_SPEC
592 #elif defined(LINK_LIBGCC_SPECIAL_1)
593 /* Have gcc do the search for libgcc.a. */
594 #define LIBGCC_SPEC "libgcc.a%s"
596 #define LIBGCC_SPEC "-lgcc"
600 /* config.h can define STARTFILE_SPEC to override the default crt0 files. */
601 #ifndef STARTFILE_SPEC
602 #define STARTFILE_SPEC \
603 "%{!shared:%{pg:gcrt0%O%s}%{!pg:%{p:mcrt0%O%s}%{!p:crt0%O%s}}}"
606 /* config.h can define ENDFILE_SPEC to override the default crtn files. */
608 #define ENDFILE_SPEC ""
612 #define LINKER_NAME "collect2"
615 #ifdef HAVE_AS_DEBUG_PREFIX_MAP
616 #define ASM_MAP " %{fdebug-prefix-map=*:--debug-prefix-map %*}"
621 /* Define ASM_DEBUG_SPEC to be a spec suitable for translating '-g'
623 #ifndef ASM_DEBUG_SPEC
624 # if defined(DBX_DEBUGGING_INFO) && defined(DWARF2_DEBUGGING_INFO) \
625 && defined(HAVE_AS_GDWARF2_DEBUG_FLAG) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
626 # define ASM_DEBUG_SPEC \
627 (PREFERRED_DEBUGGING_TYPE == DBX_DEBUG \
628 ? "%{!g0:%{gdwarf-2*:--gdwarf2}%{!gdwarf-2*:%{g*:--gstabs}}}" ASM_MAP \
629 : "%{!g0:%{gstabs*:--gstabs}%{!gstabs*:%{g*:--gdwarf2}}}" ASM_MAP)
631 # if defined(DBX_DEBUGGING_INFO) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
632 # define ASM_DEBUG_SPEC "%{g*:%{!g0:--gstabs}}" ASM_MAP
634 # if defined(DWARF2_DEBUGGING_INFO) && defined(HAVE_AS_GDWARF2_DEBUG_FLAG)
635 # define ASM_DEBUG_SPEC "%{g*:%{!g0:--gdwarf2}}" ASM_MAP
639 #ifndef ASM_DEBUG_SPEC
640 # define ASM_DEBUG_SPEC ""
643 /* Here is the spec for running the linker, after compiling all files. */
645 /* This is overridable by the target in case they need to specify the
646 -lgcc and -lc order specially, yet not require them to override all
647 of LINK_COMMAND_SPEC. */
648 #ifndef LINK_GCC_C_SEQUENCE_SPEC
649 #define LINK_GCC_C_SEQUENCE_SPEC "%G %L %G"
652 #ifndef LINK_SSP_SPEC
653 #ifdef TARGET_LIBC_PROVIDES_SSP
654 #define LINK_SSP_SPEC "%{fstack-protector:}"
656 #define LINK_SSP_SPEC "%{fstack-protector|fstack-protector-all:-lssp_nonshared -lssp}"
660 #ifndef LINK_PIE_SPEC
662 #define LINK_PIE_SPEC "%{pie:-pie} "
664 #define LINK_PIE_SPEC "%{pie:} "
668 #ifndef LINK_BUILDID_SPEC
669 # if defined(HAVE_LD_BUILDID) && defined(ENABLE_LD_BUILDID)
670 # define LINK_BUILDID_SPEC "%{!r:--build-id} "
675 /* -u* was put back because both BSD and SysV seem to support it. */
676 /* %{static:} simply prevents an error message if the target machine
677 doesn't handle -static. */
678 /* We want %{T*} after %{L*} and %D so that it can be used to specify linker
679 scripts which exist in user specified directories, or in standard
681 /* We pass any -flto and -fwhopr flags on to the linker, which is expected
682 to understand them. In practice, this means it had better be collect2. */
683 #ifndef LINK_COMMAND_SPEC
684 #define LINK_COMMAND_SPEC "\
685 %{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:\
687 %{fuse-linker-plugin: \
688 -plugin %(linker_plugin_file) \
689 -plugin-opt=%(lto_wrapper) \
690 -plugin-opt=-fresolution=%u.res \
691 %{static|static-libgcc:-plugin-opt=-pass-through=%(lto_libgcc)} \
692 %{static:-plugin-opt=-pass-through=-lc} \
694 %{flto:%<fcompare-debug*} %{fwhopr*:%<fcompare-debug*} \
695 %{flto} %{fwhopr*} %l " LINK_PIE_SPEC \
696 "%X %{o*} %{A} %{d} %{e*} %{m} %{N} %{n} %{r}\
697 %{s} %{t} %{u*} %{x} %{z} %{Z} %{!A:%{!nostdlib:%{!nostartfiles:%S}}}\
698 %{static:} %{L*} %(mfwrap) %(link_libgcc) %o\
699 %{fopenmp|ftree-parallelize-loops=*:%:include(libgomp.spec)%(link_gomp)} %(mflib)\
700 %{fprofile-arcs|fprofile-generate*|coverage:-lgcov}\
701 %{!nostdlib:%{!nodefaultlibs:%(link_ssp) %(link_gcc_c_sequence)}}\
702 %{!A:%{!nostdlib:%{!nostartfiles:%E}}} %{T*} }}}}}}"
705 #ifndef LINK_LIBGCC_SPEC
706 /* Generate -L options for startfile prefix list. */
707 # define LINK_LIBGCC_SPEC "%D"
710 #ifndef STARTFILE_PREFIX_SPEC
711 # define STARTFILE_PREFIX_SPEC ""
715 # define SYSROOT_SPEC "--sysroot=%R"
718 #ifndef SYSROOT_SUFFIX_SPEC
719 # define SYSROOT_SUFFIX_SPEC ""
722 #ifndef SYSROOT_HEADERS_SUFFIX_SPEC
723 # define SYSROOT_HEADERS_SUFFIX_SPEC ""
726 static const char *asm_debug;
727 static const char *cpp_spec = CPP_SPEC;
728 static const char *cc1_spec = CC1_SPEC;
729 static const char *cc1plus_spec = CC1PLUS_SPEC;
730 static const char *link_gcc_c_sequence_spec = LINK_GCC_C_SEQUENCE_SPEC;
731 static const char *link_ssp_spec = LINK_SSP_SPEC;
732 static const char *asm_spec = ASM_SPEC;
733 static const char *asm_final_spec = ASM_FINAL_SPEC;
734 static const char *link_spec = LINK_SPEC;
735 static const char *lib_spec = LIB_SPEC;
736 static const char *mfwrap_spec = MFWRAP_SPEC;
737 static const char *mflib_spec = MFLIB_SPEC;
738 static const char *link_gomp_spec = "";
739 static const char *libgcc_spec = LIBGCC_SPEC;
740 static const char *endfile_spec = ENDFILE_SPEC;
741 static const char *startfile_spec = STARTFILE_SPEC;
742 static const char *linker_name_spec = LINKER_NAME;
743 static const char *linker_plugin_file_spec = "";
744 static const char *lto_wrapper_spec = "";
745 static const char *lto_gcc_spec = "";
746 static const char *lto_libgcc_spec = "";
747 static const char *link_command_spec = LINK_COMMAND_SPEC;
748 static const char *link_libgcc_spec = LINK_LIBGCC_SPEC;
749 static const char *startfile_prefix_spec = STARTFILE_PREFIX_SPEC;
750 static const char *sysroot_spec = SYSROOT_SPEC;
751 static const char *sysroot_suffix_spec = SYSROOT_SUFFIX_SPEC;
752 static const char *sysroot_hdrs_suffix_spec = SYSROOT_HEADERS_SUFFIX_SPEC;
754 /* Standard options to cpp, cc1, and as, to reduce duplication in specs.
755 There should be no need to override these in target dependent files,
756 but we need to copy them to the specs file so that newer versions
757 of the GCC driver can correctly drive older tool chains with the
758 appropriate -B options. */
760 /* When cpplib handles traditional preprocessing, get rid of this, and
761 call cc1 (or cc1obj in objc/lang-specs.h) from the main specs so
762 that we default the front end language better. */
763 static const char *trad_capable_cpp =
764 "cc1 -E %{traditional|ftraditional|traditional-cpp:-traditional-cpp}";
766 /* We don't wrap .d files in %W{} since a missing .d file, and
767 therefore no dependency entry, confuses make into thinking a .o
768 file that happens to exist is up-to-date. */
769 static const char *cpp_unique_options =
770 "%{!Q:-quiet} %{nostdinc*} %{C} %{CC} %{v} %{I*&F*} %{P} %I\
771 %{MD:-MD %{!o:%b.d}%{o*:%.d%*}}\
772 %{MMD:-MMD %{!o:%b.d}%{o*:%.d%*}}\
773 %{M} %{MM} %{MF*} %{MG} %{MP} %{MQ*} %{MT*}\
774 %{!E:%{!M:%{!MM:%{!MT:%{!MQ:%{MD|MMD:%{o*:-MQ %*}}}}}}}\
775 %{remap} %{g3|ggdb3|gstabs3|gcoff3|gxcoff3|gvms3:-dD}\
776 %{!iplugindir*:%{fplugin*:%:find-plugindir()}}\
777 %{H} %C %{D*&U*&A*} %{i*} %Z %i\
778 %{fmudflap:-D_MUDFLAP -include mf-runtime.h}\
779 %{fmudflapth:-D_MUDFLAP -D_MUDFLAPTH -include mf-runtime.h}\
782 /* This contains cpp options which are common with cc1_options and are passed
783 only when preprocessing only to avoid duplication. We pass the cc1 spec
784 options to the preprocessor so that it the cc1 spec may manipulate
785 options used to set target flags. Those special target flags settings may
786 in turn cause preprocessor symbols to be defined specially. */
787 static const char *cpp_options =
788 "%(cpp_unique_options) %1 %{m*} %{std*&ansi&trigraphs} %{W*&pedantic*} %{w}\
789 %{f*} %{g*:%{!g0:%{g*} %{!fno-working-directory:-fworking-directory}}} %{O*}\
790 %{undef} %{save-temps*:-fpch-preprocess}";
792 /* This contains cpp options which are not passed when the preprocessor
793 output will be used by another program. */
794 static const char *cpp_debug_options = "%{d*}";
796 /* NB: This is shared amongst all front-ends, except for Ada. */
797 static const char *cc1_options =
798 "%{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\
799 %{!iplugindir*:%{fplugin*:%:find-plugindir()}}\
800 %1 %{!Q:-quiet} %{!dumpbase:-dumpbase %B} %{d*} %{m*} %{aux-info*}\
801 %{fcompare-debug-second:%:compare-debug-auxbase-opt(%b)} \
802 %{!fcompare-debug-second:%{c|S:%{o*:-auxbase-strip %*}%{!o*:-auxbase %b}}}%{!c:%{!S:-auxbase %b}} \
803 %{g*} %{O*} %{W*&pedantic*} %{w} %{std*&ansi&trigraphs}\
804 %{v:-version} %{pg:-p} %{p} %{f*} %{undef}\
805 %{Qn:-fno-ident} %{--help:--help}\
806 %{--target-help:--target-help}\
807 %{--help=*:--help=%(VALUE)}\
808 %{!fsyntax-only:%{S:%W{o*}%{!o*:-o %b.s}}}\
809 %{fsyntax-only:-o %j} %{-param*}\
810 %{fmudflap|fmudflapth:-fno-builtin -fno-merge-constants}\
811 %{coverage:-fprofile-arcs -ftest-coverage}";
813 static const char *asm_options =
814 "%{--target-help:%:print-asm-header()} "
816 /* If GNU AS is used, then convert -w (no warnings), -I, and -v
817 to the assembler equivalents. */
818 "%{v} %{w:-W} %{I*} "
820 "%a %Y %{c:%W{o*}%{!o*:-o %w%b%O}}%{!c:-o %d%w%u%O}";
822 static const char *invoke_as =
823 #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT
825 %{fcompare-debug=*|fdump-final-insns=*:%:compare-debug-dump-opt()}\
826 %{!S:-o %|.s |\n as %(asm_options) %|.s %A }\
830 %{fcompare-debug=*|fdump-final-insns=*:%:compare-debug-dump-opt()}\
831 %{!S:-o %|.s |\n as %(asm_options) %m.s %A }\
835 /* Some compilers have limits on line lengths, and the multilib_select
836 and/or multilib_matches strings can be very long, so we build them at
838 static struct obstack multilib_obstack;
839 static const char *multilib_select;
840 static const char *multilib_matches;
841 static const char *multilib_defaults;
842 static const char *multilib_exclusions;
844 /* Check whether a particular argument is a default argument. */
846 #ifndef MULTILIB_DEFAULTS
847 #define MULTILIB_DEFAULTS { "" }
850 static const char *const multilib_defaults_raw[] = MULTILIB_DEFAULTS;
852 #ifndef DRIVER_SELF_SPECS
853 #define DRIVER_SELF_SPECS ""
856 /* Adding -fopenmp should imply pthreads. This is particularly important
857 for targets that use different start files and suchlike. */
858 #ifndef GOMP_SELF_SPECS
859 #define GOMP_SELF_SPECS "%{fopenmp|ftree-parallelize-loops=*: -pthread}"
862 static const char *const driver_self_specs[] = {
863 "%{fdump-final-insns:-fdump-final-insns=.} %<fdump-final-insns",
864 DRIVER_SELF_SPECS, CONFIGURE_SPECS, GOMP_SELF_SPECS
867 #ifndef OPTION_DEFAULT_SPECS
868 #define OPTION_DEFAULT_SPECS { "", "" }
877 static const struct default_spec
878 option_default_specs[] = { OPTION_DEFAULT_SPECS };
882 struct user_specs *next;
883 const char *filename;
886 static struct user_specs *user_specs_head, *user_specs_tail;
889 #ifdef HAVE_TARGET_EXECUTABLE_SUFFIX
890 /* This defines which switches stop a full compilation. */
891 #define DEFAULT_SWITCH_CURTAILS_COMPILATION(CHAR) \
892 ((CHAR) == 'c' || (CHAR) == 'S' || (CHAR) == 'E')
894 #ifndef SWITCH_CURTAILS_COMPILATION
895 #define SWITCH_CURTAILS_COMPILATION(CHAR) \
896 DEFAULT_SWITCH_CURTAILS_COMPILATION(CHAR)
900 /* Record the mapping from file suffixes for compilation specs. */
904 const char *suffix; /* Use this compiler for input files
905 whose names end in this suffix. */
907 const char *spec; /* To use this compiler, run this spec. */
909 const char *cpp_spec; /* If non-NULL, substitute this spec
910 for `%C', rather than the usual
912 const int combinable; /* If nonzero, compiler can deal with
913 multiple source files at once (IMA). */
914 const int needs_preprocessing; /* If nonzero, source files need to
915 be run through a preprocessor. */
918 /* Pointer to a vector of `struct compiler' that gives the spec for
919 compiling a file, based on its suffix.
920 A file that does not end in any of these suffixes will be passed
921 unchanged to the loader and nothing else will be done to it.
923 An entry containing two 0s is used to terminate the vector.
925 If multiple entries match a file, the last matching one is used. */
927 static struct compiler *compilers;
929 /* Number of entries in `compilers', not counting the null terminator. */
931 static int n_compilers;
933 /* The default list of file name suffixes and their compilation specs. */
935 static const struct compiler default_compilers[] =
937 /* Add lists of suffixes of known languages here. If those languages
938 were not present when we built the driver, we will hit these copies
939 and be given a more meaningful error than "file not used since
940 linking is not done". */
941 {".m", "#Objective-C", 0, 0, 0}, {".mi", "#Objective-C", 0, 0, 0},
942 {".mm", "#Objective-C++", 0, 0, 0}, {".M", "#Objective-C++", 0, 0, 0},
943 {".mii", "#Objective-C++", 0, 0, 0},
944 {".cc", "#C++", 0, 0, 0}, {".cxx", "#C++", 0, 0, 0},
945 {".cpp", "#C++", 0, 0, 0}, {".cp", "#C++", 0, 0, 0},
946 {".c++", "#C++", 0, 0, 0}, {".C", "#C++", 0, 0, 0},
947 {".CPP", "#C++", 0, 0, 0}, {".ii", "#C++", 0, 0, 0},
948 {".ads", "#Ada", 0, 0, 0}, {".adb", "#Ada", 0, 0, 0},
949 {".f", "#Fortran", 0, 0, 0}, {".F", "#Fortran", 0, 0, 0},
950 {".for", "#Fortran", 0, 0, 0}, {".FOR", "#Fortran", 0, 0, 0},
951 {".ftn", "#Fortran", 0, 0, 0}, {".FTN", "#Fortran", 0, 0, 0},
952 {".fpp", "#Fortran", 0, 0, 0}, {".FPP", "#Fortran", 0, 0, 0},
953 {".f90", "#Fortran", 0, 0, 0}, {".F90", "#Fortran", 0, 0, 0},
954 {".f95", "#Fortran", 0, 0, 0}, {".F95", "#Fortran", 0, 0, 0},
955 {".f03", "#Fortran", 0, 0, 0}, {".F03", "#Fortran", 0, 0, 0},
956 {".f08", "#Fortran", 0, 0, 0}, {".F08", "#Fortran", 0, 0, 0},
957 {".r", "#Ratfor", 0, 0, 0},
958 {".p", "#Pascal", 0, 0, 0}, {".pas", "#Pascal", 0, 0, 0},
959 {".java", "#Java", 0, 0, 0}, {".class", "#Java", 0, 0, 0},
960 {".zip", "#Java", 0, 0, 0}, {".jar", "#Java", 0, 0, 0},
961 /* Next come the entries for C. */
962 {".c", "@c", 0, 1, 1},
964 /* cc1 has an integrated ISO C preprocessor. We should invoke the
965 external preprocessor if -save-temps is given. */
966 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\
968 %{traditional|ftraditional:\
969 %eGNU C no longer supports -traditional without -E}\
971 %{save-temps*|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
972 %(cpp_options) -o %{save-temps*:%b.i} %{!save-temps*:%g.i} \n\
973 cc1 -fpreprocessed %{save-temps*:%b.i} %{!save-temps*:%g.i} \
975 %{!save-temps*:%{!traditional-cpp:%{!no-integrated-cpp:\
976 cc1 %(cpp_unique_options) %(cc1_options)}}}\
977 %{!fsyntax-only:%(invoke_as)}} \
979 %{save-temps*|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
980 %(cpp_options) -o %{save-temps*:%b.i} %{!save-temps*:%g.i}}\
981 %{!save-temps*:%{!traditional-cpp:%{!no-integrated-cpp:\
982 cc1 %(cpp_unique_options) %(cc1_options)}}\
983 %{!fsyntax-only:%(invoke_as)}}}}}}", 0, 1, 1},
985 "%{!E:%e-E or -x required when input is from standard input}\
986 %(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)", 0, 0, 0},
987 {".h", "@c-header", 0, 0, 0},
989 /* cc1 has an integrated ISO C preprocessor. We should invoke the
990 external preprocessor if -save-temps is given. */
991 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\
993 %{save-temps*|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
994 %(cpp_options) -o %{save-temps*:%b.i} %{!save-temps*:%g.i} \n\
995 cc1 -fpreprocessed %{save-temps*:%b.i} %{!save-temps*:%g.i} \
997 %{!fdump-ada-spec*:-o %g.s %{!o*:--output-pch=%i.gch}\
998 %W{o*:--output-pch=%*}}%V}\
999 %{!save-temps*:%{!traditional-cpp:%{!no-integrated-cpp:\
1000 cc1 %(cpp_unique_options) %(cc1_options)\
1001 %{!fdump-ada-spec*:-o %g.s %{!o*:--output-pch=%i.gch}\
1002 %W{o*:--output-pch=%*}}%V}}}}}}", 0, 0, 0},
1003 {".i", "@cpp-output", 0, 1, 0},
1005 "%{!M:%{!MM:%{!E:cc1 -fpreprocessed %i %(cc1_options) %{!fsyntax-only:%(invoke_as)}}}}", 0, 1, 0},
1006 {".s", "@assembler", 0, 1, 0},
1008 "%{!M:%{!MM:%{!E:%{!S:as %(asm_debug) %(asm_options) %i %A }}}}", 0, 1, 0},
1009 {".sx", "@assembler-with-cpp", 0, 1, 0},
1010 {".S", "@assembler-with-cpp", 0, 1, 0},
1011 {"@assembler-with-cpp",
1012 #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT
1013 "%(trad_capable_cpp) -lang-asm %(cpp_options) -fno-directives-only\
1014 %{E|M|MM:%(cpp_debug_options)}\
1015 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\
1016 as %(asm_debug) %(asm_options) %|.s %A }}}}"
1018 "%(trad_capable_cpp) -lang-asm %(cpp_options) -fno-directives-only\
1019 %{E|M|MM:%(cpp_debug_options)}\
1020 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\
1021 as %(asm_debug) %(asm_options) %m.s %A }}}}"
1026 /* Mark end of table. */
1030 /* Number of elements in default_compilers, not counting the terminator. */
1032 static const int n_default_compilers = ARRAY_SIZE (default_compilers) - 1;
1034 /* A vector of options to give to the linker.
1035 These options are accumulated by %x,
1036 and substituted into the linker command with %X. */
1037 static int n_linker_options;
1038 static char **linker_options;
1040 /* A vector of options to give to the assembler.
1041 These options are accumulated by -Wa,
1042 and substituted into the assembler command with %Y. */
1043 static int n_assembler_options;
1044 static char **assembler_options;
1046 /* A vector of options to give to the preprocessor.
1047 These options are accumulated by -Wp,
1048 and substituted into the preprocessor command with %Z. */
1049 static int n_preprocessor_options;
1050 static char **preprocessor_options;
1052 /* Define how to map long options into short ones. */
1054 /* This structure describes one mapping. */
1057 /* The long option's name. */
1058 const char *const name;
1059 /* The equivalent short option. */
1060 const char *const equivalent;
1061 /* Argument info. A string of flag chars; NULL equals no options.
1062 a => argument required.
1063 o => argument optional.
1064 j => join argument to equivalent, making one word.
1065 * => require other text after NAME as an argument. */
1066 const char *const arg_info;
1069 /* This is the table of mappings. Mappings are tried sequentially
1070 for each option encountered; the first one that matches, wins. */
1072 static const struct option_map option_map[] =
1074 {"--all-warnings", "-Wall", 0},
1075 {"--ansi", "-ansi", 0},
1076 {"--assemble", "-S", 0},
1077 {"--assert", "-A", "a"},
1078 {"--classpath", "-fclasspath=", "aj"},
1079 {"--bootclasspath", "-fbootclasspath=", "aj"},
1080 {"--CLASSPATH", "-fclasspath=", "aj"},
1081 {"--combine", "-combine", 0},
1082 {"--comments", "-C", 0},
1083 {"--comments-in-macros", "-CC", 0},
1084 {"--compile", "-c", 0},
1085 {"--debug", "-g", "oj"},
1086 {"--define-macro", "-D", "aj"},
1087 {"--dependencies", "-M", 0},
1088 {"--dump", "-d", "a"},
1089 {"--dumpbase", "-dumpbase", "a"},
1090 {"--dumpdir", "-dumpdir", "a"},
1091 {"--encoding", "-fencoding=", "aj"},
1092 {"--entry", "-e", 0},
1093 {"--extra-warnings", "-W", 0},
1094 {"--extdirs", "-fextdirs=", "aj"},
1095 {"--for-assembler", "-Wa", "a"},
1096 {"--for-linker", "-Xlinker", "a"},
1097 {"--force-link", "-u", "a"},
1098 {"--coverage", "-coverage", 0},
1099 {"--imacros", "-imacros", "a"},
1100 {"--include", "-include", "a"},
1101 {"--include-barrier", "-I-", 0},
1102 {"--include-directory", "-I", "aj"},
1103 {"--include-directory-after", "-idirafter", "a"},
1104 {"--include-prefix", "-iprefix", "a"},
1105 {"--include-with-prefix", "-iwithprefix", "a"},
1106 {"--include-with-prefix-before", "-iwithprefixbefore", "a"},
1107 {"--include-with-prefix-after", "-iwithprefix", "a"},
1108 {"--language", "-x", "a"},
1109 {"--library-directory", "-L", "a"},
1110 {"--machine", "-m", "aj"},
1111 {"--machine-", "-m", "*j"},
1112 {"--no-canonical-prefixes", "-no-canonical-prefixes", 0},
1113 {"--no-integrated-cpp", "-no-integrated-cpp", 0},
1114 {"--no-line-commands", "-P", 0},
1115 {"--no-precompiled-includes", "-noprecomp", 0},
1116 {"--no-standard-includes", "-nostdinc", 0},
1117 {"--no-standard-libraries", "-nostdlib", 0},
1118 {"--no-warnings", "-w", 0},
1119 {"--optimize", "-O", "oj"},
1120 {"--output", "-o", "a"},
1121 {"--output-class-directory", "-foutput-class-dir=", "ja"},
1122 {"--param", "--param", "a"},
1123 {"--pass-exit-codes", "-pass-exit-codes", 0},
1124 {"--pedantic", "-pedantic", 0},
1125 {"--pedantic-errors", "-pedantic-errors", 0},
1126 {"--pie", "-pie", 0},
1127 {"--pipe", "-pipe", 0},
1128 {"--prefix", "-B", "a"},
1129 {"--preprocess", "-E", 0},
1130 {"--print-search-dirs", "-print-search-dirs", 0},
1131 {"--print-file-name", "-print-file-name=", "aj"},
1132 {"--print-libgcc-file-name", "-print-libgcc-file-name", 0},
1133 {"--print-missing-file-dependencies", "-MG", 0},
1134 {"--print-multi-lib", "-print-multi-lib", 0},
1135 {"--print-multi-directory", "-print-multi-directory", 0},
1136 {"--print-multi-os-directory", "-print-multi-os-directory", 0},
1137 {"--print-prog-name", "-print-prog-name=", "aj"},
1138 {"--print-sysroot", "-print-sysroot", 0},
1139 {"--print-sysroot-headers-suffix", "-print-sysroot-headers-suffix", 0},
1140 {"--profile", "-p", 0},
1141 {"--resource", "-fcompile-resource=", "aj"},
1142 {"--save-temps", "-save-temps", 0},
1143 {"--shared", "-shared", 0},
1144 {"--specs", "-specs=", "aj"},
1145 {"--static", "-static", 0},
1146 {"--std", "-std=", "aj"},
1147 {"--symbolic", "-symbolic", 0},
1148 {"--sysroot", "--sysroot=", "aj"},
1149 {"--time", "-time", 0},
1150 {"--trace-includes", "-H", 0},
1151 {"--traditional", "-traditional", 0},
1152 {"--traditional-cpp", "-traditional-cpp", 0},
1153 {"--trigraphs", "-trigraphs", 0},
1154 {"--undefine-macro", "-U", "aj"},
1155 {"--user-dependencies", "-MM", 0},
1156 {"--verbose", "-v", 0},
1157 {"--warn-", "-W", "*j"},
1158 {"--write-dependencies", "-MD", 0},
1159 {"--write-user-dependencies", "-MMD", 0},
1164 #ifdef TARGET_OPTION_TRANSLATE_TABLE
1165 static const struct {
1166 const char *const option_found;
1167 const char *const replacements;
1168 } target_option_translations[] =
1170 TARGET_OPTION_TRANSLATE_TABLE,
1175 /* Translate the options described by *ARGCP and *ARGVP.
1176 Make a new vector and store it back in *ARGVP,
1177 and store its length in *ARGCP. */
1180 translate_options (int *argcp, const char *const **argvp)
1184 const char *const *argv = *argvp;
1185 int newvsize = (argc + 2) * 2 * sizeof (const char *);
1186 const char **newv = XNEWVAR (const char *, newvsize);
1190 newv[newindex++] = argv[i++];
1194 #ifdef TARGET_OPTION_TRANSLATE_TABLE
1198 target_option_translations[tott_idx].option_found;
1201 if (strcmp (target_option_translations[tott_idx].option_found,
1208 for (sp = target_option_translations[tott_idx].replacements;
1215 newvsize += spaces * sizeof (const char *);
1216 newv = XRESIZEVAR (const char *, newv, newvsize);
1218 sp = target_option_translations[tott_idx].replacements;
1227 newv[newindex++] = np;
1228 while (*np != ' ' && *np)
1239 if (target_option_translations[tott_idx].option_found)
1243 /* Translate -- options. */
1244 if (argv[i][0] == '-' && argv[i][1] == '-')
1247 /* Find a mapping that applies to this option. */
1248 for (j = 0; j < ARRAY_SIZE (option_map); j++)
1250 size_t optlen = strlen (option_map[j].name);
1251 size_t arglen = strlen (argv[i]);
1252 size_t complen = arglen > optlen ? optlen : arglen;
1253 const char *arginfo = option_map[j].arg_info;
1258 if (!strncmp (argv[i], option_map[j].name, complen))
1260 const char *arg = 0;
1262 if (arglen < optlen)
1265 for (k = j + 1; k < ARRAY_SIZE (option_map); k++)
1266 if (strlen (option_map[k].name) >= arglen
1267 && !strncmp (argv[i], option_map[k].name, arglen))
1269 error ("ambiguous abbreviation %s", argv[i]);
1273 if (k != ARRAY_SIZE (option_map))
1277 if (arglen > optlen)
1279 /* If the option has an argument, accept that. */
1280 if (argv[i][optlen] == '=')
1281 arg = argv[i] + optlen + 1;
1283 /* If this mapping requires extra text at end of name,
1284 accept that as "argument". */
1285 else if (strchr (arginfo, '*') != 0)
1286 arg = argv[i] + optlen;
1288 /* Otherwise, extra text at end means mismatch.
1289 Try other mappings. */
1294 else if (strchr (arginfo, '*') != 0)
1296 error ("incomplete %qs option", option_map[j].name);
1300 /* Handle arguments. */
1301 if (strchr (arginfo, 'a') != 0)
1307 error ("missing argument to %qs option",
1308 option_map[j].name);
1315 else if (strchr (arginfo, '*') != 0)
1317 else if (strchr (arginfo, 'o') == 0)
1320 error ("extraneous argument to %qs option",
1321 option_map[j].name);
1325 /* Store the translation as one argv elt or as two. */
1326 if (arg != 0 && strchr (arginfo, 'j') != 0)
1327 newv[newindex++] = concat (option_map[j].equivalent, arg,
1331 newv[newindex++] = option_map[j].equivalent;
1332 newv[newindex++] = arg;
1335 newv[newindex++] = option_map[j].equivalent;
1343 /* Handle old-fashioned options--just copy them through,
1344 with their arguments. */
1345 else if (argv[i][0] == '-')
1347 const char *p = argv[i] + 1;
1351 if (SWITCH_TAKES_ARG (c) > (p[1] != 0))
1352 nskip += SWITCH_TAKES_ARG (c) - (p[1] != 0);
1353 else if (WORD_SWITCH_TAKES_ARG (p))
1354 nskip += WORD_SWITCH_TAKES_ARG (p);
1355 else if ((c == 'B' || c == 'b' || c == 'x')
1358 else if (! strcmp (p, "Xlinker"))
1360 else if (! strcmp (p, "Xpreprocessor"))
1362 else if (! strcmp (p, "Xassembler"))
1365 /* Watch out for an option at the end of the command line that
1366 is missing arguments, and avoid skipping past the end of the
1368 if (nskip + i > argc)
1373 newv[newindex++] = argv[i++];
1378 /* Ordinary operands. */
1379 newv[newindex++] = argv[i++];
1389 skip_whitespace (char *p)
1393 /* A fully-blank line is a delimiter in the SPEC file and shouldn't
1394 be considered whitespace. */
1395 if (p[0] == '\n' && p[1] == '\n' && p[2] == '\n')
1397 else if (*p == '\n' || *p == ' ' || *p == '\t')
1411 /* Structures to keep track of prefixes to try when looking for files. */
1415 const char *prefix; /* String to prepend to the path. */
1416 struct prefix_list *next; /* Next in linked list. */
1417 int require_machine_suffix; /* Don't use without machine_suffix. */
1418 /* 2 means try both machine_suffix and just_machine_suffix. */
1419 int priority; /* Sort key - priority within list. */
1420 int os_multilib; /* 1 if OS multilib scheme should be used,
1421 0 for GCC multilib scheme. */
1426 struct prefix_list *plist; /* List of prefixes to try */
1427 int max_len; /* Max length of a prefix in PLIST */
1428 const char *name; /* Name of this list (used in config stuff) */
1431 /* List of prefixes to try when looking for executables. */
1433 static struct path_prefix exec_prefixes = { 0, 0, "exec" };
1435 /* List of prefixes to try when looking for startup (crt0) files. */
1437 static struct path_prefix startfile_prefixes = { 0, 0, "startfile" };
1439 /* List of prefixes to try when looking for include files. */
1441 static struct path_prefix include_prefixes = { 0, 0, "include" };
1443 /* Suffix to attach to directories searched for commands.
1444 This looks like `MACHINE/VERSION/'. */
1446 static const char *machine_suffix = 0;
1448 /* Suffix to attach to directories searched for commands.
1449 This is just `MACHINE/'. */
1451 static const char *just_machine_suffix = 0;
1453 /* Adjusted value of GCC_EXEC_PREFIX envvar. */
1455 static const char *gcc_exec_prefix;
1457 /* Adjusted value of standard_libexec_prefix. */
1459 static const char *gcc_libexec_prefix;
1461 /* Default prefixes to attach to command names. */
1463 #ifndef STANDARD_STARTFILE_PREFIX_1
1464 #define STANDARD_STARTFILE_PREFIX_1 "/lib/"
1466 #ifndef STANDARD_STARTFILE_PREFIX_2
1467 #define STANDARD_STARTFILE_PREFIX_2 "/usr/lib/"
1470 #ifdef CROSS_DIRECTORY_STRUCTURE /* Don't use these prefixes for a cross compiler. */
1471 #undef MD_EXEC_PREFIX
1472 #undef MD_STARTFILE_PREFIX
1473 #undef MD_STARTFILE_PREFIX_1
1476 /* If no prefixes defined, use the null string, which will disable them. */
1477 #ifndef MD_EXEC_PREFIX
1478 #define MD_EXEC_PREFIX ""
1480 #ifndef MD_STARTFILE_PREFIX
1481 #define MD_STARTFILE_PREFIX ""
1483 #ifndef MD_STARTFILE_PREFIX_1
1484 #define MD_STARTFILE_PREFIX_1 ""
1487 /* These directories are locations set at configure-time based on the
1488 --prefix option provided to configure. Their initializers are
1489 defined in Makefile.in. These paths are not *directly* used when
1490 gcc_exec_prefix is set because, in that case, we know where the
1491 compiler has been installed, and use paths relative to that
1492 location instead. */
1493 static const char *const standard_exec_prefix = STANDARD_EXEC_PREFIX;
1494 static const char *const standard_libexec_prefix = STANDARD_LIBEXEC_PREFIX;
1495 static const char *const standard_bindir_prefix = STANDARD_BINDIR_PREFIX;
1496 static const char *const standard_startfile_prefix = STANDARD_STARTFILE_PREFIX;
1498 /* For native compilers, these are well-known paths containing
1499 components that may be provided by the system. For cross
1500 compilers, these paths are not used. */
1501 static const char *md_exec_prefix = MD_EXEC_PREFIX;
1502 static const char *md_startfile_prefix = MD_STARTFILE_PREFIX;
1503 static const char *md_startfile_prefix_1 = MD_STARTFILE_PREFIX_1;
1504 static const char *const standard_startfile_prefix_1
1505 = STANDARD_STARTFILE_PREFIX_1;
1506 static const char *const standard_startfile_prefix_2
1507 = STANDARD_STARTFILE_PREFIX_2;
1509 /* A relative path to be used in finding the location of tools
1510 relative to the driver. */
1511 static const char *const tooldir_base_prefix = TOOLDIR_BASE_PREFIX;
1513 /* Subdirectory to use for locating libraries. Set by
1514 set_multilib_dir based on the compilation options. */
1516 static const char *multilib_dir;
1518 /* Subdirectory to use for locating libraries in OS conventions. Set by
1519 set_multilib_dir based on the compilation options. */
1521 static const char *multilib_os_dir;
1523 /* Structure to keep track of the specs that have been defined so far.
1524 These are accessed using %(specname) or %[specname] in a compiler
1529 /* The following 2 fields must be first */
1530 /* to allow EXTRA_SPECS to be initialized */
1531 const char *name; /* name of the spec. */
1532 const char *ptr; /* available ptr if no static pointer */
1534 /* The following fields are not initialized */
1535 /* by EXTRA_SPECS */
1536 const char **ptr_spec; /* pointer to the spec itself. */
1537 struct spec_list *next; /* Next spec in linked list. */
1538 int name_len; /* length of the name */
1539 int alloc_p; /* whether string was allocated */
1542 #define INIT_STATIC_SPEC(NAME,PTR) \
1543 { NAME, NULL, PTR, (struct spec_list *) 0, sizeof (NAME) - 1, 0 }
1545 /* List of statically defined specs. */
1546 static struct spec_list static_specs[] =
1548 INIT_STATIC_SPEC ("asm", &asm_spec),
1549 INIT_STATIC_SPEC ("asm_debug", &asm_debug),
1550 INIT_STATIC_SPEC ("asm_final", &asm_final_spec),
1551 INIT_STATIC_SPEC ("asm_options", &asm_options),
1552 INIT_STATIC_SPEC ("invoke_as", &invoke_as),
1553 INIT_STATIC_SPEC ("cpp", &cpp_spec),
1554 INIT_STATIC_SPEC ("cpp_options", &cpp_options),
1555 INIT_STATIC_SPEC ("cpp_debug_options", &cpp_debug_options),
1556 INIT_STATIC_SPEC ("cpp_unique_options", &cpp_unique_options),
1557 INIT_STATIC_SPEC ("trad_capable_cpp", &trad_capable_cpp),
1558 INIT_STATIC_SPEC ("cc1", &cc1_spec),
1559 INIT_STATIC_SPEC ("cc1_options", &cc1_options),
1560 INIT_STATIC_SPEC ("cc1plus", &cc1plus_spec),
1561 INIT_STATIC_SPEC ("link_gcc_c_sequence", &link_gcc_c_sequence_spec),
1562 INIT_STATIC_SPEC ("link_ssp", &link_ssp_spec),
1563 INIT_STATIC_SPEC ("endfile", &endfile_spec),
1564 INIT_STATIC_SPEC ("link", &link_spec),
1565 INIT_STATIC_SPEC ("lib", &lib_spec),
1566 INIT_STATIC_SPEC ("mfwrap", &mfwrap_spec),
1567 INIT_STATIC_SPEC ("mflib", &mflib_spec),
1568 INIT_STATIC_SPEC ("link_gomp", &link_gomp_spec),
1569 INIT_STATIC_SPEC ("libgcc", &libgcc_spec),
1570 INIT_STATIC_SPEC ("startfile", &startfile_spec),
1571 INIT_STATIC_SPEC ("cross_compile", &cross_compile),
1572 INIT_STATIC_SPEC ("version", &compiler_version),
1573 INIT_STATIC_SPEC ("multilib", &multilib_select),
1574 INIT_STATIC_SPEC ("multilib_defaults", &multilib_defaults),
1575 INIT_STATIC_SPEC ("multilib_extra", &multilib_extra),
1576 INIT_STATIC_SPEC ("multilib_matches", &multilib_matches),
1577 INIT_STATIC_SPEC ("multilib_exclusions", &multilib_exclusions),
1578 INIT_STATIC_SPEC ("multilib_options", &multilib_options),
1579 INIT_STATIC_SPEC ("linker", &linker_name_spec),
1580 INIT_STATIC_SPEC ("linker_plugin_file", &linker_plugin_file_spec),
1581 INIT_STATIC_SPEC ("lto_wrapper", <o_wrapper_spec),
1582 INIT_STATIC_SPEC ("lto_gcc", <o_gcc_spec),
1583 INIT_STATIC_SPEC ("lto_libgcc", <o_libgcc_spec),
1584 INIT_STATIC_SPEC ("link_libgcc", &link_libgcc_spec),
1585 INIT_STATIC_SPEC ("md_exec_prefix", &md_exec_prefix),
1586 INIT_STATIC_SPEC ("md_startfile_prefix", &md_startfile_prefix),
1587 INIT_STATIC_SPEC ("md_startfile_prefix_1", &md_startfile_prefix_1),
1588 INIT_STATIC_SPEC ("startfile_prefix_spec", &startfile_prefix_spec),
1589 INIT_STATIC_SPEC ("sysroot_spec", &sysroot_spec),
1590 INIT_STATIC_SPEC ("sysroot_suffix_spec", &sysroot_suffix_spec),
1591 INIT_STATIC_SPEC ("sysroot_hdrs_suffix_spec", &sysroot_hdrs_suffix_spec),
1594 #ifdef EXTRA_SPECS /* additional specs needed */
1595 /* Structure to keep track of just the first two args of a spec_list.
1596 That is all that the EXTRA_SPECS macro gives us. */
1599 const char *const name;
1600 const char *const ptr;
1603 static const struct spec_list_1 extra_specs_1[] = { EXTRA_SPECS };
1604 static struct spec_list *extra_specs = (struct spec_list *) 0;
1607 /* List of dynamically allocates specs that have been defined so far. */
1609 static struct spec_list *specs = (struct spec_list *) 0;
1611 /* List of static spec functions. */
1613 static const struct spec_function static_spec_functions[] =
1615 { "getenv", getenv_spec_function },
1616 { "if-exists", if_exists_spec_function },
1617 { "if-exists-else", if_exists_else_spec_function },
1618 { "replace-outfile", replace_outfile_spec_function },
1619 { "remove-outfile", remove_outfile_spec_function },
1620 { "version-compare", version_compare_spec_function },
1621 { "include", include_spec_function },
1622 { "find-file", find_file_spec_function },
1623 { "find-plugindir", find_plugindir_spec_function },
1624 { "print-asm-header", print_asm_header_spec_function },
1625 { "compare-debug-dump-opt", compare_debug_dump_opt_spec_function },
1626 { "compare-debug-self-opt", compare_debug_self_opt_spec_function },
1627 { "compare-debug-auxbase-opt", compare_debug_auxbase_opt_spec_function },
1628 #ifdef EXTRA_SPEC_FUNCTIONS
1629 EXTRA_SPEC_FUNCTIONS
1634 static int processing_spec_function;
1636 /* Add appropriate libgcc specs to OBSTACK, taking into account
1637 various permutations of -shared-libgcc, -shared, and such. */
1639 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
1641 #ifndef USE_LD_AS_NEEDED
1642 #define USE_LD_AS_NEEDED 0
1646 init_gcc_specs (struct obstack *obstack, const char *shared_name,
1647 const char *static_name, const char *eh_name)
1651 buf = concat ("%{static|static-libgcc:", static_name, " ", eh_name, "}"
1652 "%{!static:%{!static-libgcc:"
1653 #if USE_LD_AS_NEEDED
1654 "%{!shared-libgcc:",
1655 static_name, " --as-needed ", shared_name, " --no-as-needed"
1658 shared_name, "%{!shared: ", static_name, "}"
1662 "%{!shared-libgcc:", static_name, " ", eh_name, "}"
1663 "%{shared-libgcc:", shared_name, " ", static_name, "}"
1667 "%{shared-libgcc:", shared_name, "}"
1668 "%{!shared-libgcc:", static_name, "}"
1671 "%{shared:", shared_name, "}"
1676 obstack_grow (obstack, buf, strlen (buf));
1679 #endif /* ENABLE_SHARED_LIBGCC */
1681 /* Initialize the specs lookup routines. */
1686 struct spec_list *next = (struct spec_list *) 0;
1687 struct spec_list *sl = (struct spec_list *) 0;
1691 return; /* Already initialized. */
1694 fnotice (stderr, "Using built-in specs.\n");
1697 extra_specs = XCNEWVEC (struct spec_list, ARRAY_SIZE (extra_specs_1));
1699 for (i = ARRAY_SIZE (extra_specs_1) - 1; i >= 0; i--)
1701 sl = &extra_specs[i];
1702 sl->name = extra_specs_1[i].name;
1703 sl->ptr = extra_specs_1[i].ptr;
1705 sl->name_len = strlen (sl->name);
1706 sl->ptr_spec = &sl->ptr;
1711 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--)
1713 sl = &static_specs[i];
1718 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
1719 /* ??? If neither -shared-libgcc nor --static-libgcc was
1720 seen, then we should be making an educated guess. Some proposed
1721 heuristics for ELF include:
1723 (1) If "-Wl,--export-dynamic", then it's a fair bet that the
1724 program will be doing dynamic loading, which will likely
1725 need the shared libgcc.
1727 (2) If "-ldl", then it's also a fair bet that we're doing
1730 (3) For each ET_DYN we're linking against (either through -lfoo
1731 or /some/path/foo.so), check to see whether it or one of
1732 its dependencies depends on a shared libgcc.
1736 If the runtime is fixed to look for program headers instead
1737 of calling __register_frame_info at all, for each object,
1738 use the shared libgcc if any EH symbol referenced.
1740 If crtstuff is fixed to not invoke __register_frame_info
1741 automatically, for each object, use the shared libgcc if
1742 any non-empty unwind section found.
1744 Doing any of this probably requires invoking an external program to
1745 do the actual object file scanning. */
1747 const char *p = libgcc_spec;
1750 /* Transform the extant libgcc_spec into one that uses the shared libgcc
1751 when given the proper command line arguments. */
1754 if (in_sep && *p == '-' && strncmp (p, "-lgcc", 5) == 0)
1756 init_gcc_specs (&obstack,
1758 #ifdef USE_LIBUNWIND_EXCEPTIONS
1764 #ifdef USE_LIBUNWIND_EXCEPTIONS
1765 # ifdef HAVE_LD_STATIC_DYNAMIC
1766 " %{!static:-Bstatic} -lunwind %{!static:-Bdynamic}"
1776 else if (in_sep && *p == 'l' && strncmp (p, "libgcc.a%s", 10) == 0)
1778 /* Ug. We don't know shared library extensions. Hope that
1779 systems that use this form don't do shared libraries. */
1780 init_gcc_specs (&obstack,
1784 #ifdef USE_LIBUNWIND_EXCEPTIONS
1793 obstack_1grow (&obstack, *p);
1794 in_sep = (*p == ' ');
1799 obstack_1grow (&obstack, '\0');
1800 libgcc_spec = XOBFINISH (&obstack, const char *);
1803 #ifdef USE_AS_TRADITIONAL_FORMAT
1804 /* Prepend "--traditional-format" to whatever asm_spec we had before. */
1806 static const char tf[] = "--traditional-format ";
1807 obstack_grow (&obstack, tf, sizeof(tf) - 1);
1808 obstack_grow0 (&obstack, asm_spec, strlen (asm_spec));
1809 asm_spec = XOBFINISH (&obstack, const char *);
1813 #if defined LINK_EH_SPEC || defined LINK_BUILDID_SPEC
1814 # ifdef LINK_BUILDID_SPEC
1815 /* Prepend LINK_BUILDID_SPEC to whatever link_spec we had before. */
1816 obstack_grow (&obstack, LINK_BUILDID_SPEC, sizeof(LINK_BUILDID_SPEC) - 1);
1818 # ifdef LINK_EH_SPEC
1819 /* Prepend LINK_EH_SPEC to whatever link_spec we had before. */
1820 obstack_grow (&obstack, LINK_EH_SPEC, sizeof(LINK_EH_SPEC) - 1);
1822 obstack_grow0 (&obstack, link_spec, strlen (link_spec));
1823 link_spec = XOBFINISH (&obstack, const char *);
1829 /* Change the value of spec NAME to SPEC. If SPEC is empty, then the spec is
1830 removed; If the spec starts with a + then SPEC is added to the end of the
1834 set_spec (const char *name, const char *spec)
1836 struct spec_list *sl;
1837 const char *old_spec;
1838 int name_len = strlen (name);
1841 /* If this is the first call, initialize the statically allocated specs. */
1844 struct spec_list *next = (struct spec_list *) 0;
1845 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--)
1847 sl = &static_specs[i];
1854 /* See if the spec already exists. */
1855 for (sl = specs; sl; sl = sl->next)
1856 if (name_len == sl->name_len && !strcmp (sl->name, name))
1861 /* Not found - make it. */
1862 sl = XNEW (struct spec_list);
1863 sl->name = xstrdup (name);
1864 sl->name_len = name_len;
1865 sl->ptr_spec = &sl->ptr;
1867 *(sl->ptr_spec) = "";
1872 old_spec = *(sl->ptr_spec);
1873 *(sl->ptr_spec) = ((spec[0] == '+' && ISSPACE ((unsigned char)spec[1]))
1874 ? concat (old_spec, spec + 1, NULL)
1879 fnotice (stderr, "Setting spec %s to '%s'\n\n", name, *(sl->ptr_spec));
1882 /* Free the old spec. */
1883 if (old_spec && sl->alloc_p)
1884 free (CONST_CAST(char *, old_spec));
1889 /* Accumulate a command (program name and args), and run it. */
1891 /* Vector of pointers to arguments in the current line of specifications. */
1893 static const char **argbuf;
1895 /* Number of elements allocated in argbuf. */
1897 static int argbuf_length;
1899 /* Number of elements in argbuf currently in use (containing args). */
1901 static int argbuf_index;
1903 /* Position in the argbuf array containing the name of the output file
1904 (the value associated with the "-o" flag). */
1906 static int have_o_argbuf_index = 0;
1908 /* Were the options -c, -S or -E passed. */
1909 static int have_c = 0;
1911 /* Was the option -o passed. */
1912 static int have_o = 0;
1914 /* This is the list of suffixes and codes (%g/%u/%U/%j) and the associated
1915 temp file. If the HOST_BIT_BUCKET is used for %j, no entry is made for
1918 static struct temp_name {
1919 const char *suffix; /* suffix associated with the code. */
1920 int length; /* strlen (suffix). */
1921 int unique; /* Indicates whether %g or %u/%U was used. */
1922 const char *filename; /* associated filename. */
1923 int filename_length; /* strlen (filename). */
1924 struct temp_name *next;
1927 /* Number of commands executed so far. */
1929 static int execution_count;
1931 /* Number of commands that exited with a signal. */
1933 static int signal_count;
1935 /* Allocate the argument vector. */
1941 argbuf = XNEWVEC (const char *, argbuf_length);
1944 /* Clear out the vector of arguments (after a command is executed). */
1952 /* Add one argument to the vector at the end.
1953 This is done when a space is seen or at the end of the line.
1954 If DELETE_ALWAYS is nonzero, the arg is a filename
1955 and the file should be deleted eventually.
1956 If DELETE_FAILURE is nonzero, the arg is a filename
1957 and the file should be deleted if this compilation fails. */
1960 store_arg (const char *arg, int delete_always, int delete_failure)
1962 if (argbuf_index + 1 == argbuf_length)
1963 argbuf = XRESIZEVEC (const char *, argbuf, (argbuf_length *= 2));
1965 argbuf[argbuf_index++] = arg;
1966 argbuf[argbuf_index] = 0;
1968 if (strcmp (arg, "-o") == 0)
1969 have_o_argbuf_index = argbuf_index;
1970 if (delete_always || delete_failure)
1973 /* If the temporary file we should delete is specified as
1974 part of a joined argument extract the filename. */
1976 && (p = strrchr (arg, '=')))
1978 record_temp_file (arg, delete_always, delete_failure);
1982 /* Load specs from a file name named FILENAME, replacing occurrences of
1983 various different types of line-endings, \r\n, \n\r and just \r, with
1987 load_specs (const char *filename)
1991 struct stat statbuf;
1998 fnotice (stderr, "Reading specs from %s\n", filename);
2000 /* Open and stat the file. */
2001 desc = open (filename, O_RDONLY, 0);
2003 pfatal_with_name (filename);
2004 if (stat (filename, &statbuf) < 0)
2005 pfatal_with_name (filename);
2007 /* Read contents of file into BUFFER. */
2008 buffer = XNEWVEC (char, statbuf.st_size + 1);
2009 readlen = read (desc, buffer, (unsigned) statbuf.st_size);
2011 pfatal_with_name (filename);
2012 buffer[readlen] = 0;
2015 specs = XNEWVEC (char, readlen + 1);
2017 for (buffer_p = buffer; buffer_p && *buffer_p; buffer_p++)
2023 if (buffer_p > buffer && *(buffer_p - 1) == '\n') /* \n\r */
2025 else if (*(buffer_p + 1) == '\n') /* \r\n */
2039 /* Read compilation specs from a file named FILENAME,
2040 replacing the default ones.
2042 A suffix which starts with `*' is a definition for
2043 one of the machine-specific sub-specs. The "suffix" should be
2044 *asm, *cc1, *cpp, *link, *startfile, etc.
2045 The corresponding spec is stored in asm_spec, etc.,
2046 rather than in the `compilers' vector.
2048 Anything invalid in the file is a fatal error. */
2051 read_specs (const char *filename, int main_p)
2056 buffer = load_specs (filename);
2058 /* Scan BUFFER for specs, putting them in the vector. */
2064 char *in, *out, *p1, *p2, *p3;
2066 /* Advance P in BUFFER to the next nonblank nocomment line. */
2067 p = skip_whitespace (p);
2071 /* Is this a special command that starts with '%'? */
2072 /* Don't allow this for the main specs file, since it would
2073 encourage people to overwrite it. */
2074 if (*p == '%' && !main_p)
2077 while (*p && *p != '\n')
2083 if (!strncmp (p1, "%include", sizeof ("%include") - 1)
2084 && (p1[sizeof "%include" - 1] == ' '
2085 || p1[sizeof "%include" - 1] == '\t'))
2089 p1 += sizeof ("%include");
2090 while (*p1 == ' ' || *p1 == '\t')
2093 if (*p1++ != '<' || p[-2] != '>')
2094 fatal_error ("specs %%include syntax malformed after "
2096 (long) (p1 - buffer + 1));
2099 new_filename = find_a_file (&startfile_prefixes, p1, R_OK, true);
2100 read_specs (new_filename ? new_filename : p1, FALSE);
2103 else if (!strncmp (p1, "%include_noerr", sizeof "%include_noerr" - 1)
2104 && (p1[sizeof "%include_noerr" - 1] == ' '
2105 || p1[sizeof "%include_noerr" - 1] == '\t'))
2109 p1 += sizeof "%include_noerr";
2110 while (*p1 == ' ' || *p1 == '\t')
2113 if (*p1++ != '<' || p[-2] != '>')
2114 fatal_error ("specs %%include syntax malformed after "
2116 (long) (p1 - buffer + 1));
2119 new_filename = find_a_file (&startfile_prefixes, p1, R_OK, true);
2121 read_specs (new_filename, FALSE);
2122 else if (verbose_flag)
2123 fnotice (stderr, "could not find specs file %s\n", p1);
2126 else if (!strncmp (p1, "%rename", sizeof "%rename" - 1)
2127 && (p1[sizeof "%rename" - 1] == ' '
2128 || p1[sizeof "%rename" - 1] == '\t'))
2131 struct spec_list *sl;
2132 struct spec_list *newsl;
2134 /* Get original name. */
2135 p1 += sizeof "%rename";
2136 while (*p1 == ' ' || *p1 == '\t')
2139 if (! ISALPHA ((unsigned char) *p1))
2140 fatal_error ("specs %%rename syntax malformed after "
2142 (long) (p1 - buffer));
2145 while (*p2 && !ISSPACE ((unsigned char) *p2))
2148 if (*p2 != ' ' && *p2 != '\t')
2149 fatal_error ("specs %%rename syntax malformed after "
2151 (long) (p2 - buffer));
2155 while (*p2 == ' ' || *p2 == '\t')
2158 if (! ISALPHA ((unsigned char) *p2))
2159 fatal_error ("specs %%rename syntax malformed after "
2161 (long) (p2 - buffer));
2163 /* Get new spec name. */
2165 while (*p3 && !ISSPACE ((unsigned char) *p3))
2169 fatal_error ("specs %%rename syntax malformed after "
2171 (long) (p3 - buffer));
2174 for (sl = specs; sl; sl = sl->next)
2175 if (name_len == sl->name_len && !strcmp (sl->name, p1))
2179 fatal_error ("specs %s spec was not found to be renamed", p1);
2181 if (strcmp (p1, p2) == 0)
2184 for (newsl = specs; newsl; newsl = newsl->next)
2185 if (strcmp (newsl->name, p2) == 0)
2186 fatal_error ("%s: attempt to rename spec %qs to "
2187 "already defined spec %qs",
2192 fnotice (stderr, "rename spec %s to %s\n", p1, p2);
2194 fnotice (stderr, "spec is '%s'\n\n", *(sl->ptr_spec));
2198 set_spec (p2, *(sl->ptr_spec));
2200 free (CONST_CAST (char *, *(sl->ptr_spec)));
2202 *(sl->ptr_spec) = "";
2207 fatal_error ("specs unknown %% command after %ld characters",
2208 (long) (p1 - buffer));
2211 /* Find the colon that should end the suffix. */
2213 while (*p1 && *p1 != ':' && *p1 != '\n')
2216 /* The colon shouldn't be missing. */
2218 fatal_error ("specs file malformed after %ld characters",
2219 (long) (p1 - buffer));
2221 /* Skip back over trailing whitespace. */
2223 while (p2 > buffer && (p2[-1] == ' ' || p2[-1] == '\t'))
2226 /* Copy the suffix to a string. */
2227 suffix = save_string (p, p2 - p);
2228 /* Find the next line. */
2229 p = skip_whitespace (p1 + 1);
2231 fatal_error ("specs file malformed after %ld characters",
2232 (long) (p - buffer));
2235 /* Find next blank line or end of string. */
2236 while (*p1 && !(*p1 == '\n' && (p1[1] == '\n' || p1[1] == '\0')))
2239 /* Specs end at the blank line and do not include the newline. */
2240 spec = save_string (p, p1 - p);
2243 /* Delete backslash-newline sequences from the spec. */
2248 if (in[0] == '\\' && in[1] == '\n')
2250 else if (in[0] == '#')
2251 while (*in && *in != '\n')
2259 if (suffix[0] == '*')
2261 if (! strcmp (suffix, "*link_command"))
2262 link_command_spec = spec;
2264 set_spec (suffix + 1, spec);
2268 /* Add this pair to the vector. */
2270 = XRESIZEVEC (struct compiler, compilers, n_compilers + 2);
2272 compilers[n_compilers].suffix = suffix;
2273 compilers[n_compilers].spec = spec;
2275 memset (&compilers[n_compilers], 0, sizeof compilers[n_compilers]);
2279 link_command_spec = spec;
2282 if (link_command_spec == 0)
2283 fatal_error ("spec file has no spec for linking");
2286 /* Record the names of temporary files we tell compilers to write,
2287 and delete them at the end of the run. */
2289 /* This is the common prefix we use to make temp file names.
2290 It is chosen once for each run of this program.
2291 It is substituted into a spec by %g or %j.
2292 Thus, all temp file names contain this prefix.
2293 In practice, all temp file names start with this prefix.
2295 This prefix comes from the envvar TMPDIR if it is defined;
2296 otherwise, from the P_tmpdir macro if that is defined;
2297 otherwise, in /usr/tmp or /tmp;
2298 or finally the current directory if all else fails. */
2300 static const char *temp_filename;
2302 /* Length of the prefix. */
2304 static int temp_filename_length;
2306 /* Define the list of temporary files to delete. */
2311 struct temp_file *next;
2314 /* Queue of files to delete on success or failure of compilation. */
2315 static struct temp_file *always_delete_queue;
2316 /* Queue of files to delete on failure of compilation. */
2317 static struct temp_file *failure_delete_queue;
2319 /* Record FILENAME as a file to be deleted automatically.
2320 ALWAYS_DELETE nonzero means delete it if all compilation succeeds;
2321 otherwise delete it in any case.
2322 FAIL_DELETE nonzero means delete it if a compilation step fails;
2323 otherwise delete it in any case. */
2326 record_temp_file (const char *filename, int always_delete, int fail_delete)
2328 char *const name = xstrdup (filename);
2332 struct temp_file *temp;
2333 for (temp = always_delete_queue; temp; temp = temp->next)
2334 if (! strcmp (name, temp->name))
2337 temp = XNEW (struct temp_file);
2338 temp->next = always_delete_queue;
2340 always_delete_queue = temp;
2347 struct temp_file *temp;
2348 for (temp = failure_delete_queue; temp; temp = temp->next)
2349 if (! strcmp (name, temp->name))
2352 temp = XNEW (struct temp_file);
2353 temp->next = failure_delete_queue;
2355 failure_delete_queue = temp;
2361 /* Delete all the temporary files whose names we previously recorded. */
2363 #ifndef DELETE_IF_ORDINARY
2364 #define DELETE_IF_ORDINARY(NAME,ST,VERBOSE_FLAG) \
2367 if (stat (NAME, &ST) >= 0 && S_ISREG (ST.st_mode)) \
2368 if (unlink (NAME) < 0) \
2370 perror_with_name (NAME); \
2375 delete_if_ordinary (const char *name)
2381 printf ("Delete %s? (y or n) ", name);
2385 while ((c = getchar ()) != '\n' && c != EOF)
2388 if (i == 'y' || i == 'Y')
2390 DELETE_IF_ORDINARY (name, st, verbose_flag);
2394 delete_temp_files (void)
2396 struct temp_file *temp;
2398 for (temp = always_delete_queue; temp; temp = temp->next)
2399 delete_if_ordinary (temp->name);
2400 always_delete_queue = 0;
2403 /* Delete all the files to be deleted on error. */
2406 delete_failure_queue (void)
2408 struct temp_file *temp;
2410 for (temp = failure_delete_queue; temp; temp = temp->next)
2411 delete_if_ordinary (temp->name);
2415 clear_failure_queue (void)
2417 failure_delete_queue = 0;
2420 /* Call CALLBACK for each path in PATHS, breaking out early if CALLBACK
2422 If DO_MULTI is true iterate over the paths twice, first with multilib
2423 suffix then without, otherwise iterate over the paths once without
2424 adding a multilib suffix. When DO_MULTI is true, some attempt is made
2425 to avoid visiting the same path twice, but we could do better. For
2426 instance, /usr/lib/../lib is considered different from /usr/lib.
2427 At least EXTRA_SPACE chars past the end of the path passed to
2428 CALLBACK are available for use by the callback.
2429 CALLBACK_INFO allows extra parameters to be passed to CALLBACK.
2431 Returns the value returned by CALLBACK. */
2434 for_each_path (const struct path_prefix *paths,
2437 void *(*callback) (char *, void *),
2438 void *callback_info)
2440 struct prefix_list *pl;
2441 const char *multi_dir = NULL;
2442 const char *multi_os_dir = NULL;
2443 const char *multi_suffix;
2444 const char *just_multi_suffix;
2447 bool skip_multi_dir = false;
2448 bool skip_multi_os_dir = false;
2450 multi_suffix = machine_suffix;
2451 just_multi_suffix = just_machine_suffix;
2452 if (do_multi && multilib_dir && strcmp (multilib_dir, ".") != 0)
2454 multi_dir = concat (multilib_dir, dir_separator_str, NULL);
2455 multi_suffix = concat (multi_suffix, multi_dir, NULL);
2456 just_multi_suffix = concat (just_multi_suffix, multi_dir, NULL);
2458 if (do_multi && multilib_os_dir && strcmp (multilib_os_dir, ".") != 0)
2459 multi_os_dir = concat (multilib_os_dir, dir_separator_str, NULL);
2463 size_t multi_dir_len = 0;
2464 size_t multi_os_dir_len = 0;
2466 size_t just_suffix_len;
2470 multi_dir_len = strlen (multi_dir);
2472 multi_os_dir_len = strlen (multi_os_dir);
2473 suffix_len = strlen (multi_suffix);
2474 just_suffix_len = strlen (just_multi_suffix);
2478 len = paths->max_len + extra_space + 1;
2479 if (suffix_len > multi_os_dir_len)
2482 len += multi_os_dir_len;
2483 path = XNEWVEC (char, len);
2486 for (pl = paths->plist; pl != 0; pl = pl->next)
2488 len = strlen (pl->prefix);
2489 memcpy (path, pl->prefix, len);
2491 /* Look first in MACHINE/VERSION subdirectory. */
2492 if (!skip_multi_dir)
2494 memcpy (path + len, multi_suffix, suffix_len + 1);
2495 ret = callback (path, callback_info);
2500 /* Some paths are tried with just the machine (ie. target)
2501 subdir. This is used for finding as, ld, etc. */
2503 && pl->require_machine_suffix == 2)
2505 memcpy (path + len, just_multi_suffix, just_suffix_len + 1);
2506 ret = callback (path, callback_info);
2511 /* Now try the base path. */
2512 if (!pl->require_machine_suffix
2513 && !(pl->os_multilib ? skip_multi_os_dir : skip_multi_dir))
2515 const char *this_multi;
2516 size_t this_multi_len;
2518 if (pl->os_multilib)
2520 this_multi = multi_os_dir;
2521 this_multi_len = multi_os_dir_len;
2525 this_multi = multi_dir;
2526 this_multi_len = multi_dir_len;
2530 memcpy (path + len, this_multi, this_multi_len + 1);
2534 ret = callback (path, callback_info);
2542 if (multi_dir == NULL && multi_os_dir == NULL)
2545 /* Run through the paths again, this time without multilibs.
2546 Don't repeat any we have already seen. */
2549 free (CONST_CAST (char *, multi_dir));
2551 free (CONST_CAST (char *, multi_suffix));
2552 multi_suffix = machine_suffix;
2553 free (CONST_CAST (char *, just_multi_suffix));
2554 just_multi_suffix = just_machine_suffix;
2557 skip_multi_dir = true;
2560 free (CONST_CAST (char *, multi_os_dir));
2561 multi_os_dir = NULL;
2564 skip_multi_os_dir = true;
2569 free (CONST_CAST (char *, multi_dir));
2570 free (CONST_CAST (char *, multi_suffix));
2571 free (CONST_CAST (char *, just_multi_suffix));
2574 free (CONST_CAST (char *, multi_os_dir));
2580 /* Callback for build_search_list. Adds path to obstack being built. */
2582 struct add_to_obstack_info {
2589 add_to_obstack (char *path, void *data)
2591 struct add_to_obstack_info *info = (struct add_to_obstack_info *) data;
2593 if (info->check_dir && !is_directory (path, false))
2596 if (!info->first_time)
2597 obstack_1grow (info->ob, PATH_SEPARATOR);
2599 obstack_grow (info->ob, path, strlen (path));
2601 info->first_time = false;
2605 /* Add or change the value of an environment variable, outputting the
2606 change to standard error if in verbose mode. */
2608 xputenv (const char *string)
2611 fnotice (stderr, "%s\n", string);
2612 putenv (CONST_CAST (char *, string));
2615 /* Build a list of search directories from PATHS.
2616 PREFIX is a string to prepend to the list.
2617 If CHECK_DIR_P is true we ensure the directory exists.
2618 If DO_MULTI is true, multilib paths are output first, then
2620 This is used mostly by putenv_from_prefixes so we use `collect_obstack'.
2621 It is also used by the --print-search-dirs flag. */
2624 build_search_list (const struct path_prefix *paths, const char *prefix,
2625 bool check_dir, bool do_multi)
2627 struct add_to_obstack_info info;
2629 info.ob = &collect_obstack;
2630 info.check_dir = check_dir;
2631 info.first_time = true;
2633 obstack_grow (&collect_obstack, prefix, strlen (prefix));
2634 obstack_1grow (&collect_obstack, '=');
2636 for_each_path (paths, do_multi, 0, add_to_obstack, &info);
2638 obstack_1grow (&collect_obstack, '\0');
2639 return XOBFINISH (&collect_obstack, char *);
2642 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
2646 putenv_from_prefixes (const struct path_prefix *paths, const char *env_var,
2649 xputenv (build_search_list (paths, env_var, true, do_multi));
2652 /* Check whether NAME can be accessed in MODE. This is like access,
2653 except that it never considers directories to be executable. */
2656 access_check (const char *name, int mode)
2662 if (stat (name, &st) < 0
2663 || S_ISDIR (st.st_mode))
2667 return access (name, mode);
2670 /* Callback for find_a_file. Appends the file name to the directory
2671 path. If the resulting file exists in the right mode, return the
2672 full pathname to the file. */
2674 struct file_at_path_info {
2683 file_at_path (char *path, void *data)
2685 struct file_at_path_info *info = (struct file_at_path_info *) data;
2686 size_t len = strlen (path);
2688 memcpy (path + len, info->name, info->name_len);
2689 len += info->name_len;
2691 /* Some systems have a suffix for executable files.
2692 So try appending that first. */
2693 if (info->suffix_len)
2695 memcpy (path + len, info->suffix, info->suffix_len + 1);
2696 if (access_check (path, info->mode) == 0)
2701 if (access_check (path, info->mode) == 0)
2707 /* Search for NAME using the prefix list PREFIXES. MODE is passed to
2708 access to check permissions. If DO_MULTI is true, search multilib
2709 paths then non-multilib paths, otherwise do not search multilib paths.
2710 Return 0 if not found, otherwise return its name, allocated with malloc. */
2713 find_a_file (const struct path_prefix *pprefix, const char *name, int mode,
2716 struct file_at_path_info info;
2718 #ifdef DEFAULT_ASSEMBLER
2719 if (! strcmp (name, "as") && access (DEFAULT_ASSEMBLER, mode) == 0)
2720 return xstrdup (DEFAULT_ASSEMBLER);
2723 #ifdef DEFAULT_LINKER
2724 if (! strcmp(name, "ld") && access (DEFAULT_LINKER, mode) == 0)
2725 return xstrdup (DEFAULT_LINKER);
2728 /* Determine the filename to execute (special case for absolute paths). */
2730 if (IS_ABSOLUTE_PATH (name))
2732 if (access (name, mode) == 0)
2733 return xstrdup (name);
2739 info.suffix = (mode & X_OK) != 0 ? HOST_EXECUTABLE_SUFFIX : "";
2740 info.name_len = strlen (info.name);
2741 info.suffix_len = strlen (info.suffix);
2744 return (char*) for_each_path (pprefix, do_multi,
2745 info.name_len + info.suffix_len,
2746 file_at_path, &info);
2749 /* Ranking of prefixes in the sort list. -B prefixes are put before
2752 enum path_prefix_priority
2754 PREFIX_PRIORITY_B_OPT,
2755 PREFIX_PRIORITY_LAST
2758 /* Add an entry for PREFIX in PLIST. The PLIST is kept in ascending
2759 order according to PRIORITY. Within each PRIORITY, new entries are
2762 If WARN is nonzero, we will warn if no file is found
2763 through this prefix. WARN should point to an int
2764 which will be set to 1 if this entry is used.
2766 COMPONENT is the value to be passed to update_path.
2768 REQUIRE_MACHINE_SUFFIX is 1 if this prefix can't be used without
2769 the complete value of machine_suffix.
2770 2 means try both machine_suffix and just_machine_suffix. */
2773 add_prefix (struct path_prefix *pprefix, const char *prefix,
2774 const char *component, /* enum prefix_priority */ int priority,
2775 int require_machine_suffix, int os_multilib)
2777 struct prefix_list *pl, **prev;
2780 for (prev = &pprefix->plist;
2781 (*prev) != NULL && (*prev)->priority <= priority;
2782 prev = &(*prev)->next)
2785 /* Keep track of the longest prefix. */
2787 prefix = update_path (prefix, component);
2788 len = strlen (prefix);
2789 if (len > pprefix->max_len)
2790 pprefix->max_len = len;
2792 pl = XNEW (struct prefix_list);
2793 pl->prefix = prefix;
2794 pl->require_machine_suffix = require_machine_suffix;
2795 pl->priority = priority;
2796 pl->os_multilib = os_multilib;
2798 /* Insert after PREV. */
2803 /* Same as add_prefix, but prepending target_system_root to prefix. */
2804 /* The target_system_root prefix has been relocated by gcc_exec_prefix. */
2806 add_sysrooted_prefix (struct path_prefix *pprefix, const char *prefix,
2807 const char *component,
2808 /* enum prefix_priority */ int priority,
2809 int require_machine_suffix, int os_multilib)
2811 if (!IS_ABSOLUTE_PATH (prefix))
2812 fatal_error ("system path %qs is not absolute", prefix);
2814 if (target_system_root)
2816 if (target_sysroot_suffix)
2817 prefix = concat (target_sysroot_suffix, prefix, NULL);
2818 prefix = concat (target_system_root, prefix, NULL);
2820 /* We have to override this because GCC's notion of sysroot
2821 moves along with GCC. */
2825 add_prefix (pprefix, prefix, component, priority,
2826 require_machine_suffix, os_multilib);
2829 /* Execute the command specified by the arguments on the current line of spec.
2830 When using pipes, this includes several piped-together commands
2831 with `|' between them.
2833 Return 0 if successful, -1 if failed. */
2839 int n_commands; /* # of command. */
2841 struct pex_obj *pex;
2844 const char *prog; /* program name. */
2845 const char **argv; /* vector of args. */
2848 struct command *commands; /* each command buffer with above info. */
2850 gcc_assert (!processing_spec_function);
2854 string = find_a_file (&exec_prefixes, argbuf[0], X_OK, false);
2855 argbuf[0] = (string) ? string : argbuf[0];
2856 insert_wrapper (wrapper_string);
2859 /* Count # of piped commands. */
2860 for (n_commands = 1, i = 0; i < argbuf_index; i++)
2861 if (strcmp (argbuf[i], "|") == 0)
2864 /* Get storage for each command. */
2865 commands = (struct command *) alloca (n_commands * sizeof (struct command));
2867 /* Split argbuf into its separate piped processes,
2868 and record info about each one.
2869 Also search for the programs that are to be run. */
2871 commands[0].prog = argbuf[0]; /* first command. */
2872 commands[0].argv = &argbuf[0];
2874 if (!wrapper_string)
2876 string = find_a_file (&exec_prefixes, commands[0].prog, X_OK, false);
2877 commands[0].argv[0] = (string) ? string : commands[0].argv[0];
2880 for (n_commands = 1, i = 0; i < argbuf_index; i++)
2881 if (strcmp (argbuf[i], "|") == 0)
2882 { /* each command. */
2883 #if defined (__MSDOS__) || defined (OS2) || defined (VMS)
2884 fatal_error ("-pipe not supported");
2886 argbuf[i] = 0; /* termination of command args. */
2887 commands[n_commands].prog = argbuf[i + 1];
2888 commands[n_commands].argv = &argbuf[i + 1];
2889 string = find_a_file (&exec_prefixes, commands[n_commands].prog,
2892 commands[n_commands].argv[0] = string;
2896 argbuf[argbuf_index] = 0;
2898 /* If -v, print what we are about to do, and maybe query. */
2902 /* For help listings, put a blank line between sub-processes. */
2903 if (print_help_list)
2904 fputc ('\n', stderr);
2906 /* Print each piped command as a separate line. */
2907 for (i = 0; i < n_commands; i++)
2909 const char *const *j;
2911 if (verbose_only_flag)
2913 for (j = commands[i].argv; *j; j++)
2916 for (p = *j; *p; ++p)
2917 if (!ISALNUM ((unsigned char) *p)
2918 && *p != '_' && *p != '/' && *p != '-' && *p != '.')
2922 fprintf (stderr, " \"");
2923 for (p = *j; *p; ++p)
2925 if (*p == '"' || *p == '\\' || *p == '$')
2926 fputc ('\\', stderr);
2929 fputc ('"', stderr);
2932 fprintf (stderr, " %s", *j);
2936 for (j = commands[i].argv; *j; j++)
2937 fprintf (stderr, " %s", *j);
2939 /* Print a pipe symbol after all but the last command. */
2940 if (i + 1 != n_commands)
2941 fprintf (stderr, " |");
2942 fprintf (stderr, "\n");
2945 if (verbose_only_flag != 0)
2947 /* verbose_only_flag should act as if the spec was
2948 executed, so increment execution_count before
2949 returning. This prevents spurious warnings about
2950 unused linker input files, etc. */
2955 fnotice (stderr, "\nGo ahead? (y or n) ");
2959 while (getchar () != '\n')
2962 if (i != 'y' && i != 'Y')
2967 #ifdef ENABLE_VALGRIND_CHECKING
2968 /* Run the each command through valgrind. To simplify prepending the
2969 path to valgrind and the option "-q" (for quiet operation unless
2970 something triggers), we allocate a separate argv array. */
2972 for (i = 0; i < n_commands; i++)
2978 for (argc = 0; commands[i].argv[argc] != NULL; argc++)
2981 argv = XALLOCAVEC (const char *, argc + 3);
2983 argv[0] = VALGRIND_PATH;
2985 for (j = 2; j < argc + 2; j++)
2986 argv[j] = commands[i].argv[j - 2];
2989 commands[i].argv = argv;
2990 commands[i].prog = argv[0];
2994 /* Run each piped subprocess. */
2996 pex = pex_init (PEX_USE_PIPES | ((report_times || report_times_to_file)
2997 ? PEX_RECORD_TIMES : 0),
2998 progname, temp_filename);
3000 fatal_error ("pex_init failed: %m");
3002 for (i = 0; i < n_commands; i++)
3006 const char *string = commands[i].argv[0];
3008 errmsg = pex_run (pex,
3009 ((i + 1 == n_commands ? PEX_LAST : 0)
3010 | (string == commands[i].prog ? PEX_SEARCH : 0)),
3011 string, CONST_CAST (char **, commands[i].argv),
3016 fatal_error (errmsg);
3020 pfatal_with_name (errmsg);
3024 if (string != commands[i].prog)
3025 free (CONST_CAST (char *, string));
3030 /* Wait for all the subprocesses to finish. */
3034 struct pex_time *times = NULL;
3037 statuses = (int *) alloca (n_commands * sizeof (int));
3038 if (!pex_get_status (pex, n_commands, statuses))
3039 fatal_error ("failed to get exit status: %m");
3041 if (report_times || report_times_to_file)
3043 times = (struct pex_time *) alloca (n_commands * sizeof (struct pex_time));
3044 if (!pex_get_times (pex, n_commands, times))
3045 fatal_error ("failed to get process times: %m");
3050 for (i = 0; i < n_commands; ++i)
3052 int status = statuses[i];
3054 if (WIFSIGNALED (status))
3057 /* SIGPIPE is a special case. It happens in -pipe mode
3058 when the compiler dies before the preprocessor is done,
3059 or the assembler dies before the compiler is done.
3060 There's generally been an error already, and this is
3061 just fallout. So don't generate another error unless
3062 we would otherwise have succeeded. */
3063 if (WTERMSIG (status) == SIGPIPE
3064 && (signal_count || greatest_status >= MIN_FATAL_STATUS))
3071 internal_error ("%s (program %s)",
3072 strsignal (WTERMSIG (status)), commands[i].prog);
3074 else if (WIFEXITED (status)
3075 && WEXITSTATUS (status) >= MIN_FATAL_STATUS)
3077 if (WEXITSTATUS (status) > greatest_status)
3078 greatest_status = WEXITSTATUS (status);
3082 if (report_times || report_times_to_file)
3084 struct pex_time *pt = ×[i];
3087 ut = ((double) pt->user_seconds
3088 + (double) pt->user_microseconds / 1.0e6);
3089 st = ((double) pt->system_seconds
3090 + (double) pt->system_microseconds / 1.0e6);
3095 fnotice (stderr, "# %s %.2f %.2f\n",
3096 commands[i].prog, ut, st);
3098 if (report_times_to_file)
3101 const char *const *j;
3103 fprintf (report_times_to_file, "%g %g", ut, st);
3105 for (j = &commands[i].prog; *j; j = &commands[i].argv[++c])
3108 for (p = *j; *p; ++p)
3109 if (*p == '"' || *p == '\\' || *p == '$'
3115 fprintf (report_times_to_file, " \"");
3116 for (p = *j; *p; ++p)
3118 if (*p == '"' || *p == '\\' || *p == '$')
3119 fputc ('\\', report_times_to_file);
3120 fputc (*p, report_times_to_file);
3122 fputc ('"', report_times_to_file);
3125 fprintf (report_times_to_file, " %s", *j);
3128 fputc ('\n', report_times_to_file);
3138 /* Find all the switches given to us
3139 and make a vector describing them.
3140 The elements of the vector are strings, one per switch given.
3141 If a switch uses following arguments, then the `part1' field
3142 is the switch itself and the `args' field
3143 is a null-terminated vector containing the following arguments.
3144 Bits in the `live_cond' field are:
3145 SWITCH_LIVE to indicate this switch is true in a conditional spec.
3146 SWITCH_FALSE to indicate this switch is overridden by a later switch.
3147 SWITCH_IGNORE to indicate this switch should be ignored (used in %<S).
3148 SWITCH_IGNORE_PERMANENTLY to indicate this switch should be ignored
3149 in all do_spec calls afterwards. Used for %<S from self specs.
3150 The `validated' field is nonzero if any spec has looked at this switch;
3151 if it remains zero at the end of the run, it must be meaningless. */
3153 #define SWITCH_LIVE 0x1
3154 #define SWITCH_FALSE 0x2
3155 #define SWITCH_IGNORE 0x4
3156 #define SWITCH_IGNORE_PERMANENTLY 0x8
3162 unsigned int live_cond;
3163 unsigned char validated;
3164 unsigned char ordering;
3167 static struct switchstr *switches;
3169 static int n_switches;
3171 static int n_switches_alloc;
3173 /* Set to zero if -fcompare-debug is disabled, positive if it's
3174 enabled and we're running the first compilation, negative if it's
3175 enabled and we're running the second compilation. For most of the
3176 time, it's in the range -1..1, but it can be temporarily set to 2
3177 or 3 to indicate that the -fcompare-debug flags didn't come from
3178 the command-line, but rather from the GCC_COMPARE_DEBUG environment
3179 variable, until a synthesized -fcompare-debug flag is added to the
3183 /* Set to nonzero if we've seen the -fcompare-debug-second flag. */
3184 int compare_debug_second;
3186 /* Set to the flags that should be passed to the second compilation in
3187 a -fcompare-debug compilation. */
3188 const char *compare_debug_opt;
3190 static struct switchstr *switches_debug_check[2];
3192 static int n_switches_debug_check[2];
3194 static char *debug_check_temp_file[2];
3196 /* Language is one of three things:
3198 1) The name of a real programming language.
3199 2) NULL, indicating that no one has figured out
3201 3) '*', indicating that the file should be passed
3206 const char *language;
3207 struct compiler *incompiler;
3212 /* Also a vector of input files specified. */
3214 static struct infile *infiles;
3218 static int n_infiles_alloc;
3220 /* True if multiple input files are being compiled to a single
3223 static bool combine_inputs;
3225 /* This counts the number of libraries added by lang_specific_driver, so that
3226 we can tell if there were any user supplied any files or libraries. */
3228 static int added_libraries;
3230 /* And a vector of corresponding output files is made up later. */
3232 const char **outfiles;
3234 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3236 /* Convert NAME to a new name if it is the standard suffix. DO_EXE
3237 is true if we should look for an executable suffix. DO_OBJ
3238 is true if we should look for an object suffix. */
3241 convert_filename (const char *name, int do_exe ATTRIBUTE_UNUSED,
3242 int do_obj ATTRIBUTE_UNUSED)
3244 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3252 len = strlen (name);
3254 #ifdef HAVE_TARGET_OBJECT_SUFFIX
3255 /* Convert x.o to x.obj if TARGET_OBJECT_SUFFIX is ".obj". */
3256 if (do_obj && len > 2
3257 && name[len - 2] == '.'
3258 && name[len - 1] == 'o')
3260 obstack_grow (&obstack, name, len - 2);
3261 obstack_grow0 (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX));
3262 name = XOBFINISH (&obstack, const char *);
3266 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3267 /* If there is no filetype, make it the executable suffix (which includes
3268 the "."). But don't get confused if we have just "-o". */
3269 if (! do_exe || TARGET_EXECUTABLE_SUFFIX[0] == 0 || (len == 2 && name[0] == '-'))
3272 for (i = len - 1; i >= 0; i--)
3273 if (IS_DIR_SEPARATOR (name[i]))
3276 for (i++; i < len; i++)
3280 obstack_grow (&obstack, name, len);
3281 obstack_grow0 (&obstack, TARGET_EXECUTABLE_SUFFIX,
3282 strlen (TARGET_EXECUTABLE_SUFFIX));
3283 name = XOBFINISH (&obstack, const char *);
3290 /* Display the command line switches accepted by gcc. */
3294 printf (_("Usage: %s [options] file...\n"), progname);
3295 fputs (_("Options:\n"), stdout);
3297 fputs (_(" -pass-exit-codes Exit with highest error code from a phase\n"), stdout);
3298 fputs (_(" --help Display this information\n"), stdout);
3299 fputs (_(" --target-help Display target specific command line options\n"), stdout);
3300 fputs (_(" --help={target|optimizers|warnings|params|[^]{joined|separate|undocumented}}[,...]\n"), stdout);
3301 fputs (_(" Display specific types of command line options\n"), stdout);
3303 fputs (_(" (Use '-v --help' to display command line options of sub-processes)\n"), stdout);
3304 fputs (_(" --version Display compiler version information\n"), stdout);
3305 fputs (_(" -dumpspecs Display all of the built in spec strings\n"), stdout);
3306 fputs (_(" -dumpversion Display the version of the compiler\n"), stdout);
3307 fputs (_(" -dumpmachine Display the compiler's target processor\n"), stdout);
3308 fputs (_(" -print-search-dirs Display the directories in the compiler's search path\n"), stdout);
3309 fputs (_(" -print-libgcc-file-name Display the name of the compiler's companion library\n"), stdout);
3310 fputs (_(" -print-file-name=<lib> Display the full path to library <lib>\n"), stdout);
3311 fputs (_(" -print-prog-name=<prog> Display the full path to compiler component <prog>\n"), stdout);
3312 fputs (_(" -print-multi-directory Display the root directory for versions of libgcc\n"), stdout);
3314 -print-multi-lib Display the mapping between command line options and\n\
3315 multiple library search directories\n"), stdout);
3316 fputs (_(" -print-multi-os-directory Display the relative path to OS libraries\n"), stdout);
3317 fputs (_(" -print-sysroot Display the target libraries directory\n"), stdout);
3318 fputs (_(" -print-sysroot-headers-suffix Display the sysroot suffix used to find headers\n"), stdout);
3319 fputs (_(" -Wa,<options> Pass comma-separated <options> on to the assembler\n"), stdout);
3320 fputs (_(" -Wp,<options> Pass comma-separated <options> on to the preprocessor\n"), stdout);
3321 fputs (_(" -Wl,<options> Pass comma-separated <options> on to the linker\n"), stdout);
3322 fputs (_(" -Xassembler <arg> Pass <arg> on to the assembler\n"), stdout);
3323 fputs (_(" -Xpreprocessor <arg> Pass <arg> on to the preprocessor\n"), stdout);
3324 fputs (_(" -Xlinker <arg> Pass <arg> on to the linker\n"), stdout);
3325 fputs (_(" -combine Pass multiple source files to compiler at once\n"), stdout);
3326 fputs (_(" -save-temps Do not delete intermediate files\n"), stdout);
3327 fputs (_(" -save-temps=<arg> Do not delete intermediate files\n"), stdout);
3329 -no-canonical-prefixes Do not canonicalize paths when building relative\n\
3330 prefixes to other gcc components\n"), stdout);
3331 fputs (_(" -pipe Use pipes rather than intermediate files\n"), stdout);
3332 fputs (_(" -time Time the execution of each subprocess\n"), stdout);
3333 fputs (_(" -specs=<file> Override built-in specs with the contents of <file>\n"), stdout);
3334 fputs (_(" -std=<standard> Assume that the input sources are for <standard>\n"), stdout);
3336 --sysroot=<directory> Use <directory> as the root directory for headers\n\
3337 and libraries\n"), stdout);
3338 fputs (_(" -B <directory> Add <directory> to the compiler's search paths\n"), stdout);
3339 fputs (_(" -v Display the programs invoked by the compiler\n"), stdout);
3340 fputs (_(" -### Like -v but options quoted and commands not executed\n"), stdout);
3341 fputs (_(" -E Preprocess only; do not compile, assemble or link\n"), stdout);
3342 fputs (_(" -S Compile only; do not assemble or link\n"), stdout);
3343 fputs (_(" -c Compile and assemble, but do not link\n"), stdout);
3344 fputs (_(" -o <file> Place the output into <file>\n"), stdout);
3346 -x <language> Specify the language of the following input files\n\
3347 Permissible languages include: c c++ assembler none\n\
3348 'none' means revert to the default behavior of\n\
3349 guessing the language based on the file's extension\n\
3353 \nOptions starting with -g, -f, -m, -O, -W, or --param are automatically\n\
3354 passed on to the various sub-processes invoked by %s. In order to pass\n\
3355 other options on to these processes the -W<letter> options must be used.\n\
3358 /* The rest of the options are displayed by invocations of the various
3363 add_preprocessor_option (const char *option, int len)
3365 n_preprocessor_options++;
3367 if (! preprocessor_options)
3368 preprocessor_options = XNEWVEC (char *, n_preprocessor_options);
3370 preprocessor_options = XRESIZEVEC (char *, preprocessor_options,
3371 n_preprocessor_options);
3373 preprocessor_options [n_preprocessor_options - 1] =
3374 save_string (option, len);
3378 add_assembler_option (const char *option, int len)
3380 n_assembler_options++;
3382 if (! assembler_options)
3383 assembler_options = XNEWVEC (char *, n_assembler_options);
3385 assembler_options = XRESIZEVEC (char *, assembler_options,
3386 n_assembler_options);
3388 assembler_options [n_assembler_options - 1] = save_string (option, len);
3392 add_linker_option (const char *option, int len)
3396 if (! linker_options)
3397 linker_options = XNEWVEC (char *, n_linker_options);
3399 linker_options = XRESIZEVEC (char *, linker_options, n_linker_options);
3401 linker_options [n_linker_options - 1] = save_string (option, len);
3404 /* Allocate space for an input file in infiles. */
3409 if (n_infiles_alloc == 0)
3411 n_infiles_alloc = 16;
3412 infiles = XNEWVEC (struct infile, n_infiles_alloc);
3414 else if (n_infiles_alloc == n_infiles)
3416 n_infiles_alloc *= 2;
3417 infiles = XRESIZEVEC (struct infile, infiles, n_infiles_alloc);
3421 /* Store an input file with the given NAME and LANGUAGE in
3425 add_infile (const char *name, const char *language)
3428 infiles[n_infiles].name = name;
3429 infiles[n_infiles++].language = language;
3432 /* Allocate space for a switch in switches. */
3437 if (n_switches_alloc == 0)
3439 n_switches_alloc = 16;
3440 switches = XNEWVEC (struct switchstr, n_switches_alloc);
3442 else if (n_switches_alloc == n_switches)
3444 n_switches_alloc *= 2;
3445 switches = XRESIZEVEC (struct switchstr, switches, n_switches_alloc);
3449 /* Save an option OPT with N_ARGS arguments in array ARGS, marking it
3450 as validated if VALIDATED. */
3453 save_switch (const char *opt, size_t n_args, const char *const *args,
3457 switches[n_switches].part1 = opt + 1;
3459 switches[n_switches].args = 0;
3462 switches[n_switches].args = XNEWVEC (const char *, n_args + 1);
3463 memcpy (switches[n_switches].args, args, n_args * sizeof (const char *));
3464 switches[n_switches].args[n_args] = NULL;
3467 switches[n_switches].live_cond = 0;
3468 switches[n_switches].validated = validated;
3469 switches[n_switches].ordering = 0;
3473 /* Handle an option DECODED that is unknown to the option-processing
3474 machinery, but may be known to specs. */
3477 driver_unknown_option_callback (const struct cl_decoded_option *decoded)
3479 save_switch (decoded->canonical_option[0],
3480 decoded->canonical_option_num_elements - 1,
3481 &decoded->canonical_option[1], false);
3486 /* Handle an option DECODED that is not marked as CL_DRIVER.
3487 LANG_MASK will always be CL_DRIVER. */
3490 driver_wrong_lang_callback (const struct cl_decoded_option *decoded,
3491 unsigned int lang_mask ATTRIBUTE_UNUSED)
3493 /* At this point, non-driver options are accepted (and expected to
3494 be passed down by specs) unless marked to be rejected by the
3495 driver. Options to be rejected by the driver but accepted by the
3496 compilers proper are treated just like completely unknown
3498 const struct cl_option *option = &cl_options[decoded->opt_index];
3500 if (option->flags & CL_REJECT_DRIVER)
3501 error ("unrecognized command line option %qs",
3502 decoded->orig_option_with_args_text);
3504 driver_unknown_option_callback (decoded);
3507 /* Note that an option (index OPT_INDEX, argument ARG, value VALUE)
3508 has been successfully handled with a handler for mask MASK. */
3511 driver_post_handling_callback (const struct cl_decoded_option *decoded ATTRIBUTE_UNUSED,
3512 unsigned int mask ATTRIBUTE_UNUSED)
3514 /* Nothing to do here. */
3517 static const char *spec_lang = 0;
3518 static int last_language_n_infiles;
3520 /* Handle a driver option; arguments and return value as for
3524 driver_handle_option (const struct cl_decoded_option *decoded,
3525 unsigned int lang_mask ATTRIBUTE_UNUSED, int kind,
3526 const struct cl_option_handlers *handlers ATTRIBUTE_UNUSED)
3528 size_t opt_index = decoded->opt_index;
3529 const char *arg = decoded->arg;
3530 const char *compare_debug_replacement_opt;
3531 int value = decoded->value;
3532 bool validated = false;
3533 bool do_save = true;
3535 gcc_assert (kind == DK_UNSPECIFIED);
3541 struct spec_list *sl;
3543 for (sl = specs; sl; sl = sl->next)
3544 printf ("*%s:\n%s\n\n", sl->name, *(sl->ptr_spec));
3545 if (link_command_spec)
3546 printf ("*link_command:\n%s\n\n", link_command_spec);
3550 case OPT_dumpversion:
3551 printf ("%s\n", spec_version);
3554 case OPT_dumpmachine:
3555 printf ("%s\n", spec_machine);
3559 /* translate_options () has turned --version into -fversion. */
3562 /* CPP driver cannot obtain switch from cc1_options. */
3564 add_preprocessor_option ("--version", strlen ("--version"));
3565 add_assembler_option ("--version", strlen ("--version"));
3566 add_linker_option ("--version", strlen ("--version"));
3570 /* translate_options () has turned --help into -fhelp. */
3571 print_help_list = 1;
3573 /* CPP driver cannot obtain switch from cc1_options. */
3575 add_preprocessor_option ("--help", 6);
3576 add_assembler_option ("--help", 6);
3577 add_linker_option ("--help", 6);
3581 /* translate_options () has turned --help into -fhelp. */
3582 print_subprocess_help = 2;
3585 case OPT_ftarget_help:
3586 /* translate_options() has turned --target-help into -ftarget-help. */
3587 print_subprocess_help = 1;
3589 /* CPP driver cannot obtain switch from cc1_options. */
3591 add_preprocessor_option ("--target-help", 13);
3592 add_assembler_option ("--target-help", 13);
3593 add_linker_option ("--target-help", 13);
3596 case OPT_pass_exit_codes:
3597 case OPT_print_search_dirs:
3598 case OPT_print_file_name_:
3599 case OPT_print_prog_name_:
3600 case OPT_print_multi_lib:
3601 case OPT_print_multi_directory:
3602 case OPT_print_sysroot:
3603 case OPT_print_multi_os_directory:
3604 case OPT_print_sysroot_headers_suffix:
3607 /* These options set the variables specified in common.opt
3608 automatically, and do not need to be saved for spec
3613 case OPT_print_libgcc_file_name:
3614 print_file_name = "libgcc.a";
3618 case OPT_fcompare_debug_second:
3619 compare_debug_second = 1;
3622 case OPT_fcompare_debug:
3626 compare_debug_replacement_opt = "-fcompare-debug=";
3628 goto compare_debug_with_arg;
3631 compare_debug_replacement_opt = "-fcompare-debug=-gtoggle";
3633 goto compare_debug_with_arg;
3640 case OPT_fcompare_debug_:
3641 compare_debug_replacement_opt = decoded->canonical_option[0];
3642 compare_debug_with_arg:
3643 gcc_assert (decoded->canonical_option_num_elements == 1);
3644 gcc_assert (arg != NULL);
3649 if (compare_debug < 0)
3650 compare_debug_opt = NULL;
3652 compare_debug_opt = arg;
3653 save_switch (compare_debug_replacement_opt, 0, NULL, validated);
3659 /* Pass the rest of this option to the assembler. */
3661 /* Split the argument at commas. */
3663 for (j = 0; arg[j]; j++)
3666 add_assembler_option (arg + prev, j - prev);
3670 /* Record the part after the last comma. */
3671 add_assembler_option (arg + prev, j - prev);
3679 /* Pass the rest of this option to the preprocessor. */
3681 /* Split the argument at commas. */
3683 for (j = 0; arg[j]; j++)
3686 add_preprocessor_option (arg + prev, j - prev);
3690 /* Record the part after the last comma. */
3691 add_preprocessor_option (arg + prev, j - prev);
3699 /* Split the argument at commas. */
3701 for (j = 0; arg[j]; j++)
3704 add_infile (save_string (arg + prev, j - prev), "*");
3707 /* Record the part after the last comma. */
3708 add_infile (arg + prev, "*");
3714 add_infile (arg, "*");
3718 case OPT_Xpreprocessor:
3719 add_preprocessor_option (arg, strlen (arg));
3723 case OPT_Xassembler:
3724 add_assembler_option (arg, strlen (arg));
3729 /* POSIX allows separation of -l and the lib arg; canonicalize
3730 by concatenating -l with its arg */
3731 add_infile (concat ("-l", arg, NULL), "*");
3735 case OPT_save_temps:
3736 save_temps_flag = SAVE_TEMPS_CWD;
3740 case OPT_save_temps_:
3741 if (strcmp (arg, "cwd") == 0)
3742 save_temps_flag = SAVE_TEMPS_CWD;
3743 else if (strcmp (arg, "obj") == 0
3744 || strcmp (arg, "object") == 0)
3745 save_temps_flag = SAVE_TEMPS_OBJ;
3747 fatal_error ("%qs is an unknown -save-temps option",
3748 decoded->orig_option_with_args_text);
3751 case OPT_no_canonical_prefixes:
3752 /* Already handled as a special case, so ignored here. */
3760 /* These options set the variables specified in common.opt
3761 automatically, but do need to be saved for spec
3768 struct user_specs *user = XNEW (struct user_specs);
3770 user->next = (struct user_specs *) 0;
3771 user->filename = arg;
3772 if (user_specs_tail)
3773 user_specs_tail->next = user;
3775 user_specs_head = user;
3776 user_specs_tail = user;
3782 target_system_root = arg;
3783 target_system_root_changed = 1;
3788 if (report_times_to_file)
3789 fclose (report_times_to_file);
3790 report_times_to_file = fopen (arg, "a");
3796 This is similar to -v except that there is no execution
3797 of the commands and the echoed arguments are quoted. It
3798 is intended for use in shell scripts to capture the
3799 driver-generated command line. */
3800 verbose_only_flag++;
3807 size_t len = strlen (arg);
3809 /* Catch the case where the user has forgotten to append a
3810 directory separator to the path. Note, they may be using
3811 -B to add an executable name prefix, eg "i386-elf-", in
3812 order to distinguish between multiple installations of
3813 GCC in the same directory. Hence we must check to see
3814 if appending a directory separator actually makes a
3815 valid directory name. */
3816 if (!IS_DIR_SEPARATOR (arg[len - 1])
3817 && is_directory (arg, false))
3819 char *tmp = XNEWVEC (char, len + 2);
3821 tmp[len] = DIR_SEPARATOR;
3826 add_prefix (&exec_prefixes, arg, NULL,
3827 PREFIX_PRIORITY_B_OPT, 0, 0);
3828 add_prefix (&startfile_prefixes, arg, NULL,
3829 PREFIX_PRIORITY_B_OPT, 0, 0);
3830 add_prefix (&include_prefixes, arg, NULL,
3831 PREFIX_PRIORITY_B_OPT, 0, 0);
3836 case OPT_v: /* Print our subcommands and print versions. */
3842 if (!strcmp (spec_lang, "none"))
3843 /* Suppress the warning if -xnone comes after the last input
3844 file, because alternate command interfaces like g++ might
3845 find it useful to place -xnone after each input file. */
3848 last_language_n_infiles = n_infiles;
3855 /* have_c already set in a prescan above. */
3860 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX) || defined(HAVE_TARGET_OBJECT_SUFFIX)
3861 arg = convert_filename (arg, ! have_c, 0);
3863 /* Save the output name in case -save-temps=obj was used. */
3864 save_temps_prefix = xstrdup (arg);
3865 /* On some systems, ld cannot handle "-o" without a space. So
3866 split the option from its argument. */
3867 save_switch ("-o", 1, &arg, validated);
3870 case OPT_static_libgcc:
3871 case OPT_shared_libgcc:
3872 case OPT_static_libgfortran:
3873 case OPT_static_libstdc__:
3874 /* These are always valid, since gcc.c itself understands the
3875 first two, gfortranspec.c understands -static-libgfortran and
3876 g++spec.c understands -static-libstdc++ */
3885 save_switch (decoded->canonical_option[0],
3886 decoded->canonical_option_num_elements - 1,
3887 &decoded->canonical_option[1], validated);
3891 /* Create the vector `switches' and its contents.
3892 Store its length in `n_switches'. */
3895 process_command (int argc, const char **argv)
3900 const char *tooldir_prefix;
3901 char *(*get_relative_prefix) (const char *, const char *,
3902 const char *) = NULL;
3903 struct cl_option_handlers handlers;
3904 struct cl_decoded_option *decoded_options;
3905 unsigned int decoded_options_count, j;
3907 GET_ENVIRONMENT (gcc_exec_prefix, "GCC_EXEC_PREFIX");
3911 added_libraries = 0;
3913 /* Figure compiler version from version string. */
3915 compiler_version = temp1 = xstrdup (version_string);
3917 for (; *temp1; ++temp1)
3926 /* Convert new-style -- options to old-style. */
3927 translate_options (&argc,
3928 CONST_CAST2 (const char *const **, const char ***,
3931 /* Handle any -no-canonical-prefixes flag early, to assign the function
3932 that builds relative prefixes. This function creates default search
3933 paths that are needed later in normal option handling. */
3935 for (i = 1; i < argc; i++)
3937 if (! strcmp (argv[i], "-no-canonical-prefixes"))
3939 get_relative_prefix = make_relative_prefix_ignore_links;
3943 if (! get_relative_prefix)
3944 get_relative_prefix = make_relative_prefix;
3946 /* Set up the default search paths. If there is no GCC_EXEC_PREFIX,
3947 see if we can create it from the pathname specified in argv[0]. */
3949 gcc_libexec_prefix = standard_libexec_prefix;
3951 /* FIXME: make_relative_prefix doesn't yet work for VMS. */
3952 if (!gcc_exec_prefix)
3954 gcc_exec_prefix = get_relative_prefix (argv[0],
3955 standard_bindir_prefix,
3956 standard_exec_prefix);
3957 gcc_libexec_prefix = get_relative_prefix (argv[0],
3958 standard_bindir_prefix,
3959 standard_libexec_prefix);
3960 if (gcc_exec_prefix)
3961 xputenv (concat ("GCC_EXEC_PREFIX=", gcc_exec_prefix, NULL));
3965 /* make_relative_prefix requires a program name, but
3966 GCC_EXEC_PREFIX is typically a directory name with a trailing
3967 / (which is ignored by make_relative_prefix), so append a
3969 char *tmp_prefix = concat (gcc_exec_prefix, "gcc", NULL);
3970 gcc_libexec_prefix = get_relative_prefix (tmp_prefix,
3971 standard_exec_prefix,
3972 standard_libexec_prefix);
3974 /* The path is unrelocated, so fallback to the original setting. */
3975 if (!gcc_libexec_prefix)
3976 gcc_libexec_prefix = standard_libexec_prefix;
3982 /* From this point onward, gcc_exec_prefix is non-null if the toolchain
3983 is relocated. The toolchain was either relocated using GCC_EXEC_PREFIX
3984 or an automatically created GCC_EXEC_PREFIX from argv[0]. */
3986 /* Do language-specific adjustment/addition of flags. */
3987 lang_specific_driver (&argc,
3988 CONST_CAST2 (const char *const **, const char ***,
3992 if (gcc_exec_prefix)
3994 int len = strlen (gcc_exec_prefix);
3996 if (len > (int) sizeof ("/lib/gcc/") - 1
3997 && (IS_DIR_SEPARATOR (gcc_exec_prefix[len-1])))
3999 temp = gcc_exec_prefix + len - sizeof ("/lib/gcc/") + 1;
4000 if (IS_DIR_SEPARATOR (*temp)
4001 && strncmp (temp + 1, "lib", 3) == 0
4002 && IS_DIR_SEPARATOR (temp[4])
4003 && strncmp (temp + 5, "gcc", 3) == 0)
4004 len -= sizeof ("/lib/gcc/") - 1;
4007 set_std_prefix (gcc_exec_prefix, len);
4008 add_prefix (&exec_prefixes, gcc_libexec_prefix, "GCC",
4009 PREFIX_PRIORITY_LAST, 0, 0);
4010 add_prefix (&startfile_prefixes, gcc_exec_prefix, "GCC",
4011 PREFIX_PRIORITY_LAST, 0, 0);
4014 /* COMPILER_PATH and LIBRARY_PATH have values
4015 that are lists of directory names with colons. */
4017 GET_ENVIRONMENT (temp, "COMPILER_PATH");
4020 const char *startp, *endp;
4021 char *nstore = (char *) alloca (strlen (temp) + 3);
4023 startp = endp = temp;
4026 if (*endp == PATH_SEPARATOR || *endp == 0)
4028 strncpy (nstore, startp, endp - startp);
4030 strcpy (nstore, concat (".", dir_separator_str, NULL));
4031 else if (!IS_DIR_SEPARATOR (endp[-1]))
4033 nstore[endp - startp] = DIR_SEPARATOR;
4034 nstore[endp - startp + 1] = 0;
4037 nstore[endp - startp] = 0;
4038 add_prefix (&exec_prefixes, nstore, 0,
4039 PREFIX_PRIORITY_LAST, 0, 0);
4040 add_prefix (&include_prefixes, nstore, 0,
4041 PREFIX_PRIORITY_LAST, 0, 0);
4044 endp = startp = endp + 1;
4051 GET_ENVIRONMENT (temp, LIBRARY_PATH_ENV);
4052 if (temp && *cross_compile == '0')
4054 const char *startp, *endp;
4055 char *nstore = (char *) alloca (strlen (temp) + 3);
4057 startp = endp = temp;
4060 if (*endp == PATH_SEPARATOR || *endp == 0)
4062 strncpy (nstore, startp, endp - startp);
4064 strcpy (nstore, concat (".", dir_separator_str, NULL));
4065 else if (!IS_DIR_SEPARATOR (endp[-1]))
4067 nstore[endp - startp] = DIR_SEPARATOR;
4068 nstore[endp - startp + 1] = 0;
4071 nstore[endp - startp] = 0;
4072 add_prefix (&startfile_prefixes, nstore, NULL,
4073 PREFIX_PRIORITY_LAST, 0, 1);
4076 endp = startp = endp + 1;
4083 /* Use LPATH like LIBRARY_PATH (for the CMU build program). */
4084 GET_ENVIRONMENT (temp, "LPATH");
4085 if (temp && *cross_compile == '0')
4087 const char *startp, *endp;
4088 char *nstore = (char *) alloca (strlen (temp) + 3);
4090 startp = endp = temp;
4093 if (*endp == PATH_SEPARATOR || *endp == 0)
4095 strncpy (nstore, startp, endp - startp);
4097 strcpy (nstore, concat (".", dir_separator_str, NULL));
4098 else if (!IS_DIR_SEPARATOR (endp[-1]))
4100 nstore[endp - startp] = DIR_SEPARATOR;
4101 nstore[endp - startp + 1] = 0;
4104 nstore[endp - startp] = 0;
4105 add_prefix (&startfile_prefixes, nstore, NULL,
4106 PREFIX_PRIORITY_LAST, 0, 1);
4109 endp = startp = endp + 1;
4116 /* Process the options and store input files and switches in their
4119 last_language_n_infiles = -1;
4121 decode_cmdline_options_to_array (argc, argv, CL_DRIVER,
4122 &decoded_options, &decoded_options_count);
4124 handlers.unknown_option_callback = driver_unknown_option_callback;
4125 handlers.wrong_lang_callback = driver_wrong_lang_callback;
4126 handlers.post_handling_callback = driver_post_handling_callback;
4127 handlers.num_handlers = 1;
4128 handlers.handlers[0].handler = driver_handle_option;
4129 handlers.handlers[0].mask = CL_DRIVER;
4131 for (j = 1; j < decoded_options_count; j++)
4133 switch (decoded_options[j].opt_index)
4145 for (j = 1; j < decoded_options_count; j++)
4147 if (decoded_options[j].opt_index == OPT_SPECIAL_input_file)
4149 const char *arg = decoded_options[j].arg;
4150 const char *p = strrchr (arg, '@');
4154 #ifdef HAVE_TARGET_OBJECT_SUFFIX
4155 arg = convert_filename (arg, 0, access (arg, F_OK));
4157 /* For LTO static archive support we handle input file
4158 specifications that are composed of a filename and
4159 an offset like FNAME@OFFSET. */
4162 && sscanf (p, "@%li%n", &offset, &consumed) >= 1
4163 && strlen (p) == (unsigned int)consumed)
4165 fname = (char *)xmalloc (p - arg + 1);
4166 memcpy (fname, arg, p - arg);
4167 fname[p - arg] = '\0';
4168 /* Only accept non-stdin and existing FNAME parts, otherwise
4169 try with the full name. */
4170 if (strcmp (fname, "-") == 0 || access (fname, F_OK) < 0)
4173 fname = xstrdup (arg);
4177 fname = xstrdup (arg);
4179 if (strcmp (fname, "-") != 0 && access (fname, F_OK) < 0)
4180 perror_with_name (fname);
4182 add_infile (arg, spec_lang);
4188 read_cmdline_option (decoded_options + j, CL_DRIVER, &handlers);
4191 /* If -save-temps=obj and -o name, create the prefix to use for %b.
4192 Otherwise just make -save-temps=obj the same as -save-temps=cwd. */
4193 if (save_temps_flag == SAVE_TEMPS_OBJ && save_temps_prefix != NULL)
4195 save_temps_length = strlen (save_temps_prefix);
4196 temp = strrchr (lbasename (save_temps_prefix), '.');
4199 save_temps_length -= strlen (temp);
4200 save_temps_prefix[save_temps_length] = '\0';
4204 else if (save_temps_prefix != NULL)
4206 free (save_temps_prefix);
4207 save_temps_prefix = NULL;
4210 if (save_temps_flag && use_pipes)
4212 /* -save-temps overrides -pipe, so that temp files are produced */
4213 if (save_temps_flag)
4214 warning (0, "-pipe ignored because -save-temps specified");
4220 const char *gcd = getenv ("GCC_COMPARE_DEBUG");
4222 if (gcd && gcd[0] == '-')
4225 compare_debug_opt = gcd;
4227 else if (gcd && *gcd && strcmp (gcd, "0"))
4230 compare_debug_opt = "-gtoggle";
4233 else if (compare_debug < 0)
4236 gcc_assert (!compare_debug_opt);
4239 /* Set up the search paths. We add directories that we expect to
4240 contain GNU Toolchain components before directories specified by
4241 the machine description so that we will find GNU components (like
4242 the GNU assembler) before those of the host system. */
4244 /* If we don't know where the toolchain has been installed, use the
4245 configured-in locations. */
4246 if (!gcc_exec_prefix)
4249 add_prefix (&exec_prefixes, standard_libexec_prefix, "GCC",
4250 PREFIX_PRIORITY_LAST, 1, 0);
4251 add_prefix (&exec_prefixes, standard_libexec_prefix, "BINUTILS",
4252 PREFIX_PRIORITY_LAST, 2, 0);
4253 add_prefix (&exec_prefixes, standard_exec_prefix, "BINUTILS",
4254 PREFIX_PRIORITY_LAST, 2, 0);
4256 add_prefix (&startfile_prefixes, standard_exec_prefix, "BINUTILS",
4257 PREFIX_PRIORITY_LAST, 1, 0);
4260 gcc_assert (!IS_ABSOLUTE_PATH (tooldir_base_prefix));
4261 tooldir_prefix = concat (tooldir_base_prefix, spec_machine,
4262 dir_separator_str, NULL);
4264 /* Look for tools relative to the location from which the driver is
4265 running, or, if that is not available, the configured prefix. */
4267 = concat (gcc_exec_prefix ? gcc_exec_prefix : standard_exec_prefix,
4268 spec_machine, dir_separator_str,
4269 spec_version, dir_separator_str, tooldir_prefix, NULL);
4271 add_prefix (&exec_prefixes,
4272 concat (tooldir_prefix, "bin", dir_separator_str, NULL),
4273 "BINUTILS", PREFIX_PRIORITY_LAST, 0, 0);
4274 add_prefix (&startfile_prefixes,
4275 concat (tooldir_prefix, "lib", dir_separator_str, NULL),
4276 "BINUTILS", PREFIX_PRIORITY_LAST, 0, 1);
4278 #if defined(TARGET_SYSTEM_ROOT_RELOCATABLE) && !defined(VMS)
4279 /* If the normal TARGET_SYSTEM_ROOT is inside of $exec_prefix,
4280 then consider it to relocate with the rest of the GCC installation
4281 if GCC_EXEC_PREFIX is set.
4282 ``make_relative_prefix'' is not compiled for VMS, so don't call it. */
4283 if (target_system_root && !target_system_root_changed && gcc_exec_prefix)
4285 char *tmp_prefix = get_relative_prefix (argv[0],
4286 standard_bindir_prefix,
4287 target_system_root);
4288 if (tmp_prefix && access_check (tmp_prefix, F_OK) == 0)
4290 target_system_root = tmp_prefix;
4291 target_system_root_changed = 1;
4296 /* More prefixes are enabled in main, after we read the specs file
4297 and determine whether this is cross-compilation or not. */
4299 if (n_infiles == last_language_n_infiles && spec_lang != 0)
4300 warning (0, "%<-x %s%> after last input file has no effect", spec_lang);
4302 if (compare_debug == 2 || compare_debug == 3)
4305 switches[n_switches].part1 = concat ("fcompare-debug=",
4308 switches[n_switches].args = 0;
4309 switches[n_switches].live_cond = 0;
4310 switches[n_switches].validated = 0;
4311 switches[n_switches].ordering = 0;
4316 /* Ensure we only invoke each subprocess once. */
4317 if (print_subprocess_help || print_help_list || print_version)
4321 /* Create a dummy input file, so that we can pass
4322 the help option on to the various sub-processes. */
4323 add_infile ("help-dummy", "c");
4327 switches[n_switches].part1 = 0;
4329 infiles[n_infiles].name = 0;
4332 /* Store switches not filtered out by %<S in spec in COLLECT_GCC_OPTIONS
4333 and place that in the environment. */
4336 set_collect_gcc_options (void)
4341 /* Build COLLECT_GCC_OPTIONS to have all of the options specified to
4343 obstack_grow (&collect_obstack, "COLLECT_GCC_OPTIONS=",
4344 sizeof ("COLLECT_GCC_OPTIONS=") - 1);
4347 for (i = 0; (int) i < n_switches; i++)
4349 const char *const *args;
4352 obstack_grow (&collect_obstack, " ", 1);
4356 /* Ignore elided switches. */
4357 if ((switches[i].live_cond & SWITCH_IGNORE) != 0)
4360 obstack_grow (&collect_obstack, "'-", 2);
4361 q = switches[i].part1;
4362 while ((p = strchr (q, '\'')))
4364 obstack_grow (&collect_obstack, q, p - q);
4365 obstack_grow (&collect_obstack, "'\\''", 4);
4368 obstack_grow (&collect_obstack, q, strlen (q));
4369 obstack_grow (&collect_obstack, "'", 1);
4371 for (args = switches[i].args; args && *args; args++)
4373 obstack_grow (&collect_obstack, " '", 2);
4375 while ((p = strchr (q, '\'')))
4377 obstack_grow (&collect_obstack, q, p - q);
4378 obstack_grow (&collect_obstack, "'\\''", 4);
4381 obstack_grow (&collect_obstack, q, strlen (q));
4382 obstack_grow (&collect_obstack, "'", 1);
4385 obstack_grow (&collect_obstack, "\0", 1);
4386 xputenv (XOBFINISH (&collect_obstack, char *));
4389 /* Process a spec string, accumulating and running commands. */
4391 /* These variables describe the input file name.
4392 input_file_number is the index on outfiles of this file,
4393 so that the output file name can be stored for later use by %o.
4394 input_basename is the start of the part of the input file
4395 sans all directory names, and basename_length is the number
4396 of characters starting there excluding the suffix .c or whatever. */
4398 static const char *gcc_input_filename;
4399 static int input_file_number;
4400 size_t input_filename_length;
4401 static int basename_length;
4402 static int suffixed_basename_length;
4403 static const char *input_basename;
4404 static const char *input_suffix;
4405 #ifndef HOST_LACKS_INODE_NUMBERS
4406 static struct stat input_stat;
4408 static int input_stat_set;
4410 /* The compiler used to process the current input file. */
4411 static struct compiler *input_file_compiler;
4413 /* These are variables used within do_spec and do_spec_1. */
4415 /* Nonzero if an arg has been started and not yet terminated
4416 (with space, tab or newline). */
4417 static int arg_going;
4419 /* Nonzero means %d or %g has been seen; the next arg to be terminated
4420 is a temporary file name. */
4421 static int delete_this_arg;
4423 /* Nonzero means %w has been seen; the next arg to be terminated
4424 is the output file name of this compilation. */
4425 static int this_is_output_file;
4427 /* Nonzero means %s has been seen; the next arg to be terminated
4428 is the name of a library file and we should try the standard
4429 search dirs for it. */
4430 static int this_is_library_file;
4432 /* Nonzero means %T has been seen; the next arg to be terminated
4433 is the name of a linker script and we should try all of the
4434 standard search dirs for it. If it is found insert a --script
4435 command line switch and then substitute the full path in place,
4436 otherwise generate an error message. */
4437 static int this_is_linker_script;
4439 /* Nonzero means that the input of this command is coming from a pipe. */
4440 static int input_from_pipe;
4442 /* Nonnull means substitute this for any suffix when outputting a switches
4444 static const char *suffix_subst;
4446 /* If there is an argument being accumulated, terminate it and store it. */
4449 end_going_arg (void)
4455 obstack_1grow (&obstack, 0);
4456 string = XOBFINISH (&obstack, const char *);
4457 if (this_is_library_file)
4458 string = find_file (string);
4459 if (this_is_linker_script)
4461 char * full_script_path = find_a_file (&startfile_prefixes, string, R_OK, true);
4463 if (full_script_path == NULL)
4465 error ("unable to locate default linker script %qs in the library search paths", string);
4466 /* Script was not found on search path. */
4469 store_arg ("--script", false, false);
4470 string = full_script_path;
4472 store_arg (string, delete_this_arg, this_is_output_file);
4473 if (this_is_output_file)
4474 outfiles[input_file_number] = string;
4480 /* Parse the WRAPPER string which is a comma separated list of the command line
4481 and insert them into the beginning of argbuf. */
4484 insert_wrapper (const char *wrapper)
4488 char *buf = xstrdup (wrapper);
4497 while ((p = strchr (p, ',')) != NULL);
4499 if (argbuf_index + n >= argbuf_length)
4501 argbuf_length = argbuf_length * 2;
4502 while (argbuf_length < argbuf_index + n)
4504 argbuf = XRESIZEVEC (const char *, argbuf, argbuf_length);
4506 for (i = argbuf_index - 1; i >= 0; i--)
4507 argbuf[i + n] = argbuf[i];
4520 while ((p = strchr (p, ',')) != NULL);
4521 gcc_assert (i == n);
4525 /* Process the spec SPEC and run the commands specified therein.
4526 Returns 0 if the spec is successfully processed; -1 if failed. */
4529 do_spec (const char *spec)
4533 value = do_spec_2 (spec);
4535 /* Force out any unfinished command.
4536 If -pipe, this forces out the last command if it ended in `|'. */
4539 if (argbuf_index > 0 && !strcmp (argbuf[argbuf_index - 1], "|"))
4542 set_collect_gcc_options ();
4544 if (argbuf_index > 0)
4552 do_spec_2 (const char *spec)
4558 delete_this_arg = 0;
4559 this_is_output_file = 0;
4560 this_is_library_file = 0;
4561 this_is_linker_script = 0;
4562 input_from_pipe = 0;
4563 suffix_subst = NULL;
4565 result = do_spec_1 (spec, 0, NULL);
4573 /* Process the given spec string and add any new options to the end
4574 of the switches/n_switches array. */
4577 do_option_spec (const char *name, const char *spec)
4579 unsigned int i, value_count, value_len;
4580 const char *p, *q, *value;
4581 char *tmp_spec, *tmp_spec_p;
4583 if (configure_default_options[0].name == NULL)
4586 for (i = 0; i < ARRAY_SIZE (configure_default_options); i++)
4587 if (strcmp (configure_default_options[i].name, name) == 0)
4589 if (i == ARRAY_SIZE (configure_default_options))
4592 value = configure_default_options[i].value;
4593 value_len = strlen (value);
4595 /* Compute the size of the final spec. */
4598 while ((p = strstr (p, "%(VALUE)")) != NULL)
4604 /* Replace each %(VALUE) by the specified value. */
4605 tmp_spec = (char *) alloca (strlen (spec) + 1
4606 + value_count * (value_len - strlen ("%(VALUE)")));
4607 tmp_spec_p = tmp_spec;
4609 while ((p = strstr (q, "%(VALUE)")) != NULL)
4611 memcpy (tmp_spec_p, q, p - q);
4612 tmp_spec_p = tmp_spec_p + (p - q);
4613 memcpy (tmp_spec_p, value, value_len);
4614 tmp_spec_p += value_len;
4615 q = p + strlen ("%(VALUE)");
4617 strcpy (tmp_spec_p, q);
4619 do_self_spec (tmp_spec);
4622 /* Process the given spec string and add any new options to the end
4623 of the switches/n_switches array. */
4626 do_self_spec (const char *spec)
4631 do_spec_1 (" ", 0, NULL);
4633 /* Mark %<S switches processed by do_self_spec to be ignored permanently.
4634 do_self_specs adds the replacements to switches array, so it shouldn't
4635 be processed afterwards. */
4636 for (i = 0; i < n_switches; i++)
4637 if ((switches[i].live_cond & SWITCH_IGNORE))
4638 switches[i].live_cond |= SWITCH_IGNORE_PERMANENTLY;
4640 if (argbuf_index > 0)
4642 switches = XRESIZEVEC (struct switchstr, switches,
4643 n_switches + argbuf_index + 1);
4645 for (i = 0; i < argbuf_index; i++)
4647 struct switchstr *sw;
4648 const char *p = argbuf[i];
4651 /* Each switch should start with '-'. */
4653 fatal_error ("switch %qs does not start with %<-%>", argbuf[i]);
4658 sw = &switches[n_switches++];
4664 /* Deal with option arguments in separate argv elements. */
4665 if ((SWITCH_TAKES_ARG (c) > (p[1] != 0))
4666 || WORD_SWITCH_TAKES_ARG (p))
4669 int n_args = WORD_SWITCH_TAKES_ARG (p);
4673 /* Count only the option arguments in separate argv elements. */
4674 n_args = SWITCH_TAKES_ARG (c) - (p[1] != 0);
4676 if (i + n_args >= argbuf_index)
4677 fatal_error ("argument to %<-%s%> is missing", p);
4679 = XNEWVEC (const char *, n_args + 1);
4681 sw->args[j++] = argbuf[++i];
4682 /* Null-terminate the vector. */
4687 /* On some systems, ld cannot handle "-o" without
4688 a space. So split the option from its argument. */
4689 char *part1 = XNEWVEC (char, 2);
4694 sw->args = XNEWVEC (const char *, 2);
4695 sw->args[0] = xstrdup (p+1);
4702 switches[n_switches].part1 = 0;
4706 /* Callback for processing %D and %I specs. */
4708 struct spec_path_info {
4713 bool separate_options;
4717 spec_path (char *path, void *data)
4719 struct spec_path_info *info = (struct spec_path_info *) data;
4723 if (info->omit_relative && !IS_ABSOLUTE_PATH (path))
4726 if (info->append_len != 0)
4728 len = strlen (path);
4729 memcpy (path + len, info->append, info->append_len + 1);
4732 if (!is_directory (path, true))
4735 do_spec_1 (info->option, 1, NULL);
4736 if (info->separate_options)
4737 do_spec_1 (" ", 0, NULL);
4739 if (info->append_len == 0)
4741 len = strlen (path);
4742 save = path[len - 1];
4743 if (IS_DIR_SEPARATOR (path[len - 1]))
4744 path[len - 1] = '\0';
4747 do_spec_1 (path, 1, NULL);
4748 do_spec_1 (" ", 0, NULL);
4750 /* Must not damage the original path. */
4751 if (info->append_len == 0)
4752 path[len - 1] = save;
4757 /* Create a temporary FILE with the contents of ARGV. Add @FILE to the
4761 create_at_file (char **argv)
4763 char *temp_file = make_temp_file ("");
4764 char *at_argument = concat ("@", temp_file, NULL);
4765 FILE *f = fopen (temp_file, "w");
4769 fatal_error ("could not open temporary response file %s",
4772 status = writeargv (argv, f);
4775 fatal_error ("could not write to temporary response file %s",
4778 status = fclose (f);
4781 fatal_error ("could not close temporary response file %s",
4784 store_arg (at_argument, 0, 0);
4786 record_temp_file (temp_file, !save_temps_flag, !save_temps_flag);
4789 /* True if we should compile INFILE. */
4792 compile_input_file_p (struct infile *infile)
4794 if ((!infile->language) || (infile->language[0] != '*'))
4795 if (infile->incompiler == input_file_compiler)
4800 /* Process the sub-spec SPEC as a portion of a larger spec.
4801 This is like processing a whole spec except that we do
4802 not initialize at the beginning and we do not supply a
4803 newline by default at the end.
4804 INSWITCH nonzero means don't process %-sequences in SPEC;
4805 in this case, % is treated as an ordinary character.
4806 This is used while substituting switches.
4807 INSWITCH nonzero also causes SPC not to terminate an argument.
4809 Value is zero unless a line was finished
4810 and the command on that line reported an error. */
4813 do_spec_1 (const char *spec, int inswitch, const char *soft_matched_part)
4815 const char *p = spec;
4821 /* If substituting a switch, treat all chars like letters.
4822 Otherwise, NL, SPC, TAB and % are special. */
4823 switch (inswitch ? 'a' : c)
4828 if (argbuf_index > 0 && !strcmp (argbuf[argbuf_index - 1], "|"))
4830 /* A `|' before the newline means use a pipe here,
4831 but only if -pipe was specified.
4832 Otherwise, execute now and don't pass the `|' as an arg. */
4835 input_from_pipe = 1;
4842 set_collect_gcc_options ();
4844 if (argbuf_index > 0)
4850 /* Reinitialize for a new command, and for a new argument. */
4853 delete_this_arg = 0;
4854 this_is_output_file = 0;
4855 this_is_library_file = 0;
4856 this_is_linker_script = 0;
4857 input_from_pipe = 0;
4864 obstack_1grow (&obstack, c);
4872 /* Reinitialize for a new argument. */
4873 delete_this_arg = 0;
4874 this_is_output_file = 0;
4875 this_is_library_file = 0;
4876 this_is_linker_script = 0;
4883 fatal_error ("spec %qs invalid", spec);
4886 if (save_temps_length)
4887 obstack_grow (&obstack, save_temps_prefix, save_temps_length);
4889 obstack_grow (&obstack, input_basename, basename_length);
4890 if (compare_debug < 0)
4891 obstack_grow (&obstack, ".gk", 3);
4896 if (save_temps_length)
4897 obstack_grow (&obstack, save_temps_prefix, save_temps_length);
4899 obstack_grow (&obstack, input_basename, suffixed_basename_length);
4900 if (compare_debug < 0)
4901 obstack_grow (&obstack, ".gk", 3);
4906 delete_this_arg = 2;
4909 /* Dump out the directories specified with LIBRARY_PATH,
4910 followed by the absolute directories
4911 that we search for startfiles. */
4914 struct spec_path_info info;
4917 info.append_len = 0;
4918 #ifdef RELATIVE_PREFIX_NOT_LINKDIR
4919 /* Used on systems which record the specified -L dirs
4920 and use them to search for dynamic linking.
4921 Relative directories always come from -B,
4922 and it is better not to use them for searching
4923 at run time. In particular, stage1 loses. */
4924 info.omit_relative = true;
4926 info.omit_relative = false;
4928 info.separate_options = false;
4930 for_each_path (&startfile_prefixes, true, 0, spec_path, &info);
4935 /* %efoo means report an error with `foo' as error message
4936 and don't execute any more commands for this file. */
4940 while (*p != 0 && *p != '\n')
4942 buf = (char *) alloca (p - q + 1);
4943 strncpy (buf, q, p - q);
4945 error ("%s", _(buf));
4950 /* %nfoo means report a notice with `foo' on stderr. */
4954 while (*p != 0 && *p != '\n')
4956 buf = (char *) alloca (p - q + 1);
4957 strncpy (buf, q, p - q);
4959 inform (0, "%s", _(buf));
4969 /* If save_temps_flag is off, and the HOST_BIT_BUCKET is
4970 defined, and it is not a directory, and it is
4971 writable, use it. Otherwise, treat this like any
4972 other temporary file. */
4974 if ((!save_temps_flag)
4975 && (stat (HOST_BIT_BUCKET, &st) == 0) && (!S_ISDIR (st.st_mode))
4976 && (access (HOST_BIT_BUCKET, W_OK) == 0))
4978 obstack_grow (&obstack, HOST_BIT_BUCKET,
4979 strlen (HOST_BIT_BUCKET));
4980 delete_this_arg = 0;
4985 goto create_temp_file;
4989 obstack_1grow (&obstack, '-');
4990 delete_this_arg = 0;
4993 /* consume suffix */
4994 while (*p == '.' || ISALNUM ((unsigned char) *p))
4996 if (p[0] == '%' && p[1] == 'O')
5001 goto create_temp_file;
5005 /* consume suffix */
5006 while (*p == '.' || ISALNUM ((unsigned char) *p))
5008 if (p[0] == '%' && p[1] == 'O')
5013 goto create_temp_file;
5019 struct temp_name *t;
5021 const char *suffix = p;
5022 char *saved_suffix = NULL;
5024 while (*p == '.' || ISALNUM ((unsigned char) *p))
5026 suffix_length = p - suffix;
5027 if (p[0] == '%' && p[1] == 'O')
5030 /* We don't support extra suffix characters after %O. */
5031 if (*p == '.' || ISALNUM ((unsigned char) *p))
5032 fatal_error ("spec %qs has invalid %<%%0%c%>", spec, *p);
5033 if (suffix_length == 0)
5034 suffix = TARGET_OBJECT_SUFFIX;
5038 = XNEWVEC (char, suffix_length
5039 + strlen (TARGET_OBJECT_SUFFIX));
5040 strncpy (saved_suffix, suffix, suffix_length);
5041 strcpy (saved_suffix + suffix_length,
5042 TARGET_OBJECT_SUFFIX);
5044 suffix_length += strlen (TARGET_OBJECT_SUFFIX);
5047 if (compare_debug < 0)
5049 suffix = concat (".gk", suffix, NULL);
5053 /* If -save-temps=obj and -o were specified, use that for the
5055 if (save_temps_length)
5058 temp_filename_length
5059 = save_temps_length + suffix_length + 1;
5060 tmp = (char *) alloca (temp_filename_length);
5061 memcpy (tmp, save_temps_prefix, save_temps_length);
5062 memcpy (tmp + save_temps_length, suffix, suffix_length);
5063 tmp[save_temps_length + suffix_length] = '\0';
5064 temp_filename = save_string (tmp,
5065 temp_filename_length + 1);
5066 obstack_grow (&obstack, temp_filename,
5067 temp_filename_length);
5069 delete_this_arg = 0;
5073 /* If the gcc_input_filename has the same suffix specified
5074 for the %g, %u, or %U, and -save-temps is specified,
5075 we could end up using that file as an intermediate
5076 thus clobbering the user's source file (.e.g.,
5077 gcc -save-temps foo.s would clobber foo.s with the
5078 output of cpp0). So check for this condition and
5079 generate a temp file as the intermediate. */
5081 if (save_temps_flag)
5084 temp_filename_length = basename_length + suffix_length + 1;
5085 tmp = (char *) alloca (temp_filename_length);
5086 memcpy (tmp, input_basename, basename_length);
5087 memcpy (tmp + basename_length, suffix, suffix_length);
5088 tmp[basename_length + suffix_length] = '\0';
5089 temp_filename = tmp;
5091 if (strcmp (temp_filename, gcc_input_filename) != 0)
5093 #ifndef HOST_LACKS_INODE_NUMBERS
5094 struct stat st_temp;
5096 /* Note, set_input() resets input_stat_set to 0. */
5097 if (input_stat_set == 0)
5099 input_stat_set = stat (gcc_input_filename,
5101 if (input_stat_set >= 0)
5105 /* If we have the stat for the gcc_input_filename
5106 and we can do the stat for the temp_filename
5107 then the they could still refer to the same
5108 file if st_dev/st_ino's are the same. */
5109 if (input_stat_set != 1
5110 || stat (temp_filename, &st_temp) < 0
5111 || input_stat.st_dev != st_temp.st_dev
5112 || input_stat.st_ino != st_temp.st_ino)
5114 /* Just compare canonical pathnames. */
5115 char* input_realname = lrealpath (gcc_input_filename);
5116 char* temp_realname = lrealpath (temp_filename);
5117 bool files_differ = strcmp (input_realname, temp_realname);
5118 free (input_realname);
5119 free (temp_realname);
5123 temp_filename = save_string (temp_filename,
5124 temp_filename_length + 1);
5125 obstack_grow (&obstack, temp_filename,
5126 temp_filename_length);
5128 delete_this_arg = 0;
5134 /* See if we already have an association of %g/%u/%U and
5136 for (t = temp_names; t; t = t->next)
5137 if (t->length == suffix_length
5138 && strncmp (t->suffix, suffix, suffix_length) == 0
5139 && t->unique == (c == 'u' || c == 'U' || c == 'j'))
5142 /* Make a new association if needed. %u and %j
5144 if (t == 0 || c == 'u' || c == 'j')
5148 t = XNEW (struct temp_name);
5149 t->next = temp_names;
5152 t->length = suffix_length;
5155 t->suffix = saved_suffix;
5156 saved_suffix = NULL;
5159 t->suffix = save_string (suffix, suffix_length);
5160 t->unique = (c == 'u' || c == 'U' || c == 'j');
5161 temp_filename = make_temp_file (t->suffix);
5162 temp_filename_length = strlen (temp_filename);
5163 t->filename = temp_filename;
5164 t->filename_length = temp_filename_length;
5168 free (saved_suffix);
5170 obstack_grow (&obstack, t->filename, t->filename_length);
5171 delete_this_arg = 1;
5179 if (at_file_supplied)
5181 /* We are going to expand `%i' to `@FILE', where FILE
5182 is a newly-created temporary filename. The filenames
5183 that would usually be expanded in place of %o will be
5184 written to the temporary file. */
5189 for (i = 0; i < n_infiles; i++)
5190 if (compile_input_file_p (&infiles[i]))
5193 argv = (char **) alloca (sizeof (char *) * (n_files + 1));
5195 /* Copy the strings over. */
5196 for (i = 0, j = 0; i < n_infiles; i++)
5197 if (compile_input_file_p (&infiles[i]))
5199 argv[j] = CONST_CAST (char *, infiles[i].name);
5200 infiles[i].compiled = true;
5205 create_at_file (argv);
5208 for (i = 0; (int) i < n_infiles; i++)
5209 if (compile_input_file_p (&infiles[i]))
5211 store_arg (infiles[i].name, 0, 0);
5212 infiles[i].compiled = true;
5217 obstack_grow (&obstack, gcc_input_filename,
5218 input_filename_length);
5225 struct spec_path_info info;
5229 do_spec_1 ("-imultilib", 1, NULL);
5230 /* Make this a separate argument. */
5231 do_spec_1 (" ", 0, NULL);
5232 do_spec_1 (multilib_dir, 1, NULL);
5233 do_spec_1 (" ", 0, NULL);
5236 if (gcc_exec_prefix)
5238 do_spec_1 ("-iprefix", 1, NULL);
5239 /* Make this a separate argument. */
5240 do_spec_1 (" ", 0, NULL);
5241 do_spec_1 (gcc_exec_prefix, 1, NULL);
5242 do_spec_1 (" ", 0, NULL);
5245 if (target_system_root_changed ||
5246 (target_system_root && target_sysroot_hdrs_suffix))
5248 do_spec_1 ("-isysroot", 1, NULL);
5249 /* Make this a separate argument. */
5250 do_spec_1 (" ", 0, NULL);
5251 do_spec_1 (target_system_root, 1, NULL);
5252 if (target_sysroot_hdrs_suffix)
5253 do_spec_1 (target_sysroot_hdrs_suffix, 1, NULL);
5254 do_spec_1 (" ", 0, NULL);
5257 info.option = "-isystem";
5258 info.append = "include";
5259 info.append_len = strlen (info.append);
5260 info.omit_relative = false;
5261 info.separate_options = true;
5263 for_each_path (&include_prefixes, false, info.append_len,
5266 info.append = "include-fixed";
5267 if (*sysroot_hdrs_suffix_spec)
5268 info.append = concat (info.append, dir_separator_str,
5269 multilib_dir, NULL);
5270 info.append_len = strlen (info.append);
5271 for_each_path (&include_prefixes, false, info.append_len,
5278 int max = n_infiles;
5279 max += lang_specific_extra_outfiles;
5281 if (HAVE_GNU_LD && at_file_supplied)
5283 /* We are going to expand `%o' to `@FILE', where FILE
5284 is a newly-created temporary filename. The filenames
5285 that would usually be expanded in place of %o will be
5286 written to the temporary file. */
5291 /* Convert OUTFILES into a form suitable for writeargv. */
5293 /* Determine how many are non-NULL. */
5294 for (n_files = 0, i = 0; i < max; i++)
5295 n_files += outfiles[i] != NULL;
5297 argv = (char **) alloca (sizeof (char *) * (n_files + 1));
5299 /* Copy the strings over. */
5300 for (i = 0, j = 0; i < max; i++)
5303 argv[j] = CONST_CAST (char *, outfiles[i]);
5308 create_at_file (argv);
5311 for (i = 0; i < max; i++)
5313 store_arg (outfiles[i], 0, 0);
5318 obstack_grow (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX));
5323 this_is_library_file = 1;
5327 this_is_linker_script = 1;
5331 outfiles[input_file_number] = NULL;
5335 this_is_output_file = 1;
5340 int cur_index = argbuf_index;
5341 /* Handle the {...} following the %W. */
5343 fatal_error ("spec %qs has invalid %<%%W%c%>", spec, *p);
5344 p = handle_braces (p + 1);
5348 /* If any args were output, mark the last one for deletion
5350 if (argbuf_index != cur_index)
5351 record_temp_file (argbuf[argbuf_index - 1], 0, 1);
5355 /* %x{OPTION} records OPTION for %X to output. */
5361 /* Skip past the option value and make a copy. */
5363 fatal_error ("spec %qs has invalid %<%%x%c%>", spec, *p);
5366 string = save_string (p1 + 1, p - p1 - 2);
5368 /* See if we already recorded this option. */
5369 for (i = 0; i < n_linker_options; i++)
5370 if (! strcmp (string, linker_options[i]))
5376 /* This option is new; add it. */
5377 add_linker_option (string, strlen (string));
5381 /* Dump out the options accumulated previously using %x. */
5383 for (i = 0; i < n_linker_options; i++)
5385 do_spec_1 (linker_options[i], 1, NULL);
5386 /* Make each accumulated option a separate argument. */
5387 do_spec_1 (" ", 0, NULL);
5391 /* Dump out the options accumulated previously using -Wa,. */
5393 for (i = 0; i < n_assembler_options; i++)
5395 do_spec_1 (assembler_options[i], 1, NULL);
5396 /* Make each accumulated option a separate argument. */
5397 do_spec_1 (" ", 0, NULL);
5401 /* Dump out the options accumulated previously using -Wp,. */
5403 for (i = 0; i < n_preprocessor_options; i++)
5405 do_spec_1 (preprocessor_options[i], 1, NULL);
5406 /* Make each accumulated option a separate argument. */
5407 do_spec_1 (" ", 0, NULL);
5411 /* Here are digits and numbers that just process
5412 a certain constant string as a spec. */
5415 value = do_spec_1 (cc1_spec, 0, NULL);
5421 value = do_spec_1 (cc1plus_spec, 0, NULL);
5427 value = do_spec_1 (asm_spec, 0, NULL);
5433 value = do_spec_1 (asm_final_spec, 0, NULL);
5440 const char *const spec
5441 = (input_file_compiler->cpp_spec
5442 ? input_file_compiler->cpp_spec
5444 value = do_spec_1 (spec, 0, NULL);
5451 value = do_spec_1 (endfile_spec, 0, NULL);
5457 value = do_spec_1 (link_spec, 0, NULL);
5463 value = do_spec_1 (lib_spec, 0, NULL);
5469 value = do_spec_1 (libgcc_spec, 0, NULL);
5475 /* We assume there is a directory
5476 separator at the end of this string. */
5477 if (target_system_root)
5479 obstack_grow (&obstack, target_system_root,
5480 strlen (target_system_root));
5481 if (target_sysroot_suffix)
5482 obstack_grow (&obstack, target_sysroot_suffix,
5483 strlen (target_sysroot_suffix));
5488 value = do_spec_1 (startfile_spec, 0, NULL);
5493 /* Here we define characters other than letters and digits. */
5496 p = handle_braces (p);
5502 p = handle_spec_function (p);
5508 obstack_1grow (&obstack, '%');
5515 while (p[len] && p[len] != ' ' && p[len] != '%')
5517 suffix_subst = save_string (p - 1, len + 1);
5522 /* Henceforth ignore the option(s) matching the pattern
5527 int have_wildcard = 0;
5530 while (p[len] && p[len] != ' ' && p[len] != '\t')
5533 if (p[len-1] == '*')
5536 for (i = 0; i < n_switches; i++)
5537 if (!strncmp (switches[i].part1, p, len - have_wildcard)
5538 && (have_wildcard || switches[i].part1[len] == '\0'))
5540 switches[i].live_cond |= SWITCH_IGNORE;
5541 switches[i].validated = 1;
5549 if (soft_matched_part)
5551 do_spec_1 (soft_matched_part, 1, NULL);
5552 do_spec_1 (" ", 0, NULL);
5555 /* Catch the case where a spec string contains something like
5556 '%{foo:%*}'. i.e. there is no * in the pattern on the left
5557 hand side of the :. */
5558 error ("spec failure: %<%%*%> has not been initialized by pattern match");
5561 /* Process a string found as the value of a spec given by name.
5562 This feature allows individual machine descriptions
5563 to add and use their own specs.
5564 %[...] modifies -D options the way %P does;
5565 %(...) uses the spec unmodified. */
5567 warning (0, "use of obsolete %%[ operator in specs");
5570 const char *name = p;
5571 struct spec_list *sl;
5574 /* The string after the S/P is the name of a spec that is to be
5576 while (*p && *p != ')' && *p != ']')
5579 /* See if it's in the list. */
5580 for (len = p - name, sl = specs; sl; sl = sl->next)
5581 if (sl->name_len == len && !strncmp (sl->name, name, len))
5583 name = *(sl->ptr_spec);
5585 fnotice (stderr, "Processing spec %c%s%c, which is '%s'\n",
5586 c, sl->name, (c == '(') ? ')' : ']', name);
5595 value = do_spec_1 (name, 0, NULL);
5601 char *x = (char *) alloca (strlen (name) * 2 + 1);
5603 const char *y = name;
5606 /* Copy all of NAME into BUF, but put __ after
5607 every -D and at the end of each arg. */
5610 if (! strncmp (y, "-D", 2))
5621 && (*y == ' ' || *y == '\t' || *y == '='
5622 || *y == '}' || *y == 0))
5635 value = do_spec_1 (buf, 0, NULL);
5641 /* Discard the closing paren or bracket. */
5648 error ("spec failure: unrecognized spec option %qc", c);
5654 /* Backslash: treat next character as ordinary. */
5659 /* Ordinary character: put it into the current argument. */
5660 obstack_1grow (&obstack, c);
5664 /* End of string. If we are processing a spec function, we need to
5665 end any pending argument. */
5666 if (processing_spec_function)
5672 /* Look up a spec function. */
5674 static const struct spec_function *
5675 lookup_spec_function (const char *name)
5677 const struct spec_function *sf;
5679 for (sf = static_spec_functions; sf->name != NULL; sf++)
5680 if (strcmp (sf->name, name) == 0)
5686 /* Evaluate a spec function. */
5689 eval_spec_function (const char *func, const char *args)
5691 const struct spec_function *sf;
5692 const char *funcval;
5694 /* Saved spec processing context. */
5695 int save_argbuf_index;
5696 int save_argbuf_length;
5697 const char **save_argbuf;
5700 int save_delete_this_arg;
5701 int save_this_is_output_file;
5702 int save_this_is_library_file;
5703 int save_input_from_pipe;
5704 int save_this_is_linker_script;
5705 const char *save_suffix_subst;
5708 sf = lookup_spec_function (func);
5710 fatal_error ("unknown spec function %qs", func);
5712 /* Push the spec processing context. */
5713 save_argbuf_index = argbuf_index;
5714 save_argbuf_length = argbuf_length;
5715 save_argbuf = argbuf;
5717 save_arg_going = arg_going;
5718 save_delete_this_arg = delete_this_arg;
5719 save_this_is_output_file = this_is_output_file;
5720 save_this_is_library_file = this_is_library_file;
5721 save_this_is_linker_script = this_is_linker_script;
5722 save_input_from_pipe = input_from_pipe;
5723 save_suffix_subst = suffix_subst;
5725 /* Create a new spec processing context, and build the function
5729 if (do_spec_2 (args) < 0)
5730 fatal_error ("error in args to spec function %qs", func);
5732 /* argbuf_index is an index for the next argument to be inserted, and
5733 so contains the count of the args already inserted. */
5735 funcval = (*sf->func) (argbuf_index, argbuf);
5737 /* Pop the spec processing context. */
5738 argbuf_index = save_argbuf_index;
5739 argbuf_length = save_argbuf_length;
5741 argbuf = save_argbuf;
5743 arg_going = save_arg_going;
5744 delete_this_arg = save_delete_this_arg;
5745 this_is_output_file = save_this_is_output_file;
5746 this_is_library_file = save_this_is_library_file;
5747 this_is_linker_script = save_this_is_linker_script;
5748 input_from_pipe = save_input_from_pipe;
5749 suffix_subst = save_suffix_subst;
5754 /* Handle a spec function call of the form:
5758 ARGS is processed as a spec in a separate context and split into an
5759 argument vector in the normal fashion. The function returns a string
5760 containing a spec which we then process in the caller's context, or
5761 NULL if no processing is required. */
5764 handle_spec_function (const char *p)
5767 const char *endp, *funcval;
5770 processing_spec_function++;
5772 /* Get the function name. */
5773 for (endp = p; *endp != '\0'; endp++)
5775 if (*endp == '(') /* ) */
5777 /* Only allow [A-Za-z0-9], -, and _ in function names. */
5778 if (!ISALNUM (*endp) && !(*endp == '-' || *endp == '_'))
5779 fatal_error ("malformed spec function name");
5781 if (*endp != '(') /* ) */
5782 fatal_error ("no arguments for spec function");
5783 func = save_string (p, endp - p);
5786 /* Get the arguments. */
5787 for (count = 0; *endp != '\0'; endp++)
5796 else if (*endp == '(') /* ) */
5801 fatal_error ("malformed spec function arguments");
5802 args = save_string (p, endp - p);
5805 /* p now points to just past the end of the spec function expression. */
5807 funcval = eval_spec_function (func, args);
5808 if (funcval != NULL && do_spec_1 (funcval, 0, NULL) < 0)
5814 processing_spec_function--;
5819 /* Inline subroutine of handle_braces. Returns true if the current
5820 input suffix matches the atom bracketed by ATOM and END_ATOM. */
5822 input_suffix_matches (const char *atom, const char *end_atom)
5824 return (input_suffix
5825 && !strncmp (input_suffix, atom, end_atom - atom)
5826 && input_suffix[end_atom - atom] == '\0');
5829 /* Subroutine of handle_braces. Returns true if the current
5830 input file's spec name matches the atom bracketed by ATOM and END_ATOM. */
5832 input_spec_matches (const char *atom, const char *end_atom)
5834 return (input_file_compiler
5835 && input_file_compiler->suffix
5836 && input_file_compiler->suffix[0] != '\0'
5837 && !strncmp (input_file_compiler->suffix + 1, atom,
5839 && input_file_compiler->suffix[end_atom - atom + 1] == '\0');
5842 /* Subroutine of handle_braces. Returns true if a switch
5843 matching the atom bracketed by ATOM and END_ATOM appeared on the
5846 switch_matches (const char *atom, const char *end_atom, int starred)
5849 int len = end_atom - atom;
5850 int plen = starred ? len : -1;
5852 for (i = 0; i < n_switches; i++)
5853 if (!strncmp (switches[i].part1, atom, len)
5854 && (starred || switches[i].part1[len] == '\0')
5855 && check_live_switch (i, plen))
5861 /* Inline subroutine of handle_braces. Mark all of the switches which
5862 match ATOM (extends to END_ATOM; STARRED indicates whether there
5863 was a star after the atom) for later processing. */
5865 mark_matching_switches (const char *atom, const char *end_atom, int starred)
5868 int len = end_atom - atom;
5869 int plen = starred ? len : -1;
5871 for (i = 0; i < n_switches; i++)
5872 if (!strncmp (switches[i].part1, atom, len)
5873 && (starred || switches[i].part1[len] == '\0')
5874 && check_live_switch (i, plen))
5875 switches[i].ordering = 1;
5878 /* Inline subroutine of handle_braces. Process all the currently
5879 marked switches through give_switch, and clear the marks. */
5881 process_marked_switches (void)
5885 for (i = 0; i < n_switches; i++)
5886 if (switches[i].ordering == 1)
5888 switches[i].ordering = 0;
5893 /* Handle a %{ ... } construct. P points just inside the leading {.
5894 Returns a pointer one past the end of the brace block, or 0
5895 if we call do_spec_1 and that returns -1. */
5898 handle_braces (const char *p)
5900 const char *atom, *end_atom;
5901 const char *d_atom = NULL, *d_end_atom = NULL;
5902 const char *orig = p;
5910 bool a_must_be_last = false;
5911 bool ordered_set = false;
5912 bool disjunct_set = false;
5913 bool disj_matched = false;
5914 bool disj_starred = true;
5915 bool n_way_choice = false;
5916 bool n_way_matched = false;
5918 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
5925 /* Scan one "atom" (S in the description above of %{}, possibly
5926 with '!', '.', '@', ',', or '*' modifiers). */
5928 a_is_suffix = false;
5929 a_is_starred = false;
5930 a_is_negated = false;
5931 a_is_spectype = false;
5935 p++, a_is_negated = true;
5939 p++, a_is_suffix = true;
5941 p++, a_is_spectype = true;
5944 while (ISIDNUM(*p) || *p == '-' || *p == '+' || *p == '='
5945 || *p == ',' || *p == '.' || *p == '@')
5950 p++, a_is_starred = 1;
5956 /* Substitute the switch(es) indicated by the current atom. */
5958 if (disjunct_set || n_way_choice || a_is_negated || a_is_suffix
5959 || a_is_spectype || atom == end_atom)
5962 mark_matching_switches (atom, end_atom, a_is_starred);
5965 process_marked_switches ();
5969 /* Substitute some text if the current atom appears as a switch
5971 disjunct_set = true;
5975 if (atom == end_atom)
5977 if (!n_way_choice || disj_matched || *p == '|'
5978 || a_is_negated || a_is_suffix || a_is_spectype
5982 /* An empty term may appear as the last choice of an
5983 N-way choice set; it means "otherwise". */
5984 a_must_be_last = true;
5985 disj_matched = !n_way_matched;
5986 disj_starred = false;
5990 if ((a_is_suffix || a_is_spectype) && a_is_starred)
5994 disj_starred = false;
5996 /* Don't bother testing this atom if we already have a
5998 if (!disj_matched && !n_way_matched)
6001 a_matched = input_suffix_matches (atom, end_atom);
6002 else if (a_is_spectype)
6003 a_matched = input_spec_matches (atom, end_atom);
6005 a_matched = switch_matches (atom, end_atom, a_is_starred);
6007 if (a_matched != a_is_negated)
6009 disj_matched = true;
6011 d_end_atom = end_atom;
6018 /* Found the body, that is, the text to substitute if the
6019 current disjunction matches. */
6020 p = process_brace_body (p + 1, d_atom, d_end_atom, disj_starred,
6021 disj_matched && !n_way_matched);
6025 /* If we have an N-way choice, reset state for the next
6029 n_way_choice = true;
6030 n_way_matched |= disj_matched;
6031 disj_matched = false;
6032 disj_starred = true;
6033 d_atom = d_end_atom = NULL;
6042 while (*p++ != '}');
6047 fatal_error ("braced spec %qs is invalid at %qc", orig, *p);
6052 /* Subroutine of handle_braces. Scan and process a brace substitution body
6053 (X in the description of %{} syntax). P points one past the colon;
6054 ATOM and END_ATOM bracket the first atom which was found to be true
6055 (present) in the current disjunction; STARRED indicates whether all
6056 the atoms in the current disjunction were starred (for syntax validation);
6057 MATCHED indicates whether the disjunction matched or not, and therefore
6058 whether or not the body is to be processed through do_spec_1 or just
6059 skipped. Returns a pointer to the closing } or ;, or 0 if do_spec_1
6063 process_brace_body (const char *p, const char *atom, const char *end_atom,
6064 int starred, int matched)
6066 const char *body, *end_body;
6067 unsigned int nesting_level;
6068 bool have_subst = false;
6070 /* Locate the closing } or ;, honoring nested braces.
6071 Trim trailing whitespace. */
6080 if (!--nesting_level)
6083 else if (*p == ';' && nesting_level == 1)
6085 else if (*p == '%' && p[1] == '*' && nesting_level == 1)
6087 else if (*p == '\0')
6093 while (end_body[-1] == ' ' || end_body[-1] == '\t')
6096 if (have_subst && !starred)
6101 /* Copy the substitution body to permanent storage and execute it.
6102 If have_subst is false, this is a simple matter of running the
6103 body through do_spec_1... */
6104 char *string = save_string (body, end_body - body);
6107 if (do_spec_1 (string, 0, NULL) < 0)
6112 /* ... but if have_subst is true, we have to process the
6113 body once for each matching switch, with %* set to the
6114 variant part of the switch. */
6115 unsigned int hard_match_len = end_atom - atom;
6118 for (i = 0; i < n_switches; i++)
6119 if (!strncmp (switches[i].part1, atom, hard_match_len)
6120 && check_live_switch (i, hard_match_len))
6122 if (do_spec_1 (string, 0,
6123 &switches[i].part1[hard_match_len]) < 0)
6125 /* Pass any arguments this switch has. */
6127 suffix_subst = NULL;
6135 fatal_error ("braced spec body %qs is invalid", body);
6138 /* Return 0 iff switch number SWITCHNUM is obsoleted by a later switch
6139 on the command line. PREFIX_LENGTH is the length of XXX in an {XXX*}
6140 spec, or -1 if either exact match or %* is used.
6142 A -O switch is obsoleted by a later -O switch. A -f, -m, or -W switch
6143 whose value does not begin with "no-" is obsoleted by the same value
6144 with the "no-", similarly for a switch with the "no-" prefix. */
6147 check_live_switch (int switchnum, int prefix_length)
6149 const char *name = switches[switchnum].part1;
6152 /* If we already processed this switch and determined if it was
6153 live or not, return our past determination. */
6154 if (switches[switchnum].live_cond != 0)
6155 return ((switches[switchnum].live_cond & SWITCH_LIVE) != 0
6156 && (switches[switchnum].live_cond & SWITCH_FALSE) == 0
6157 && (switches[switchnum].live_cond & SWITCH_IGNORE_PERMANENTLY)
6160 /* In the common case of {<at-most-one-letter>*}, a negating
6161 switch would always match, so ignore that case. We will just
6162 send the conflicting switches to the compiler phase. */
6163 if (prefix_length >= 0 && prefix_length <= 1)
6166 /* Now search for duplicate in a manner that depends on the name. */
6170 for (i = switchnum + 1; i < n_switches; i++)
6171 if (switches[i].part1[0] == 'O')
6173 switches[switchnum].validated = 1;
6174 switches[switchnum].live_cond = SWITCH_FALSE;
6179 case 'W': case 'f': case 'm':
6180 if (! strncmp (name + 1, "no-", 3))
6182 /* We have Xno-YYY, search for XYYY. */
6183 for (i = switchnum + 1; i < n_switches; i++)
6184 if (switches[i].part1[0] == name[0]
6185 && ! strcmp (&switches[i].part1[1], &name[4]))
6187 switches[switchnum].validated = 1;
6188 switches[switchnum].live_cond = SWITCH_FALSE;
6194 /* We have XYYY, search for Xno-YYY. */
6195 for (i = switchnum + 1; i < n_switches; i++)
6196 if (switches[i].part1[0] == name[0]
6197 && switches[i].part1[1] == 'n'
6198 && switches[i].part1[2] == 'o'
6199 && switches[i].part1[3] == '-'
6200 && !strcmp (&switches[i].part1[4], &name[1]))
6202 switches[switchnum].validated = 1;
6203 switches[switchnum].live_cond = SWITCH_FALSE;
6210 /* Otherwise the switch is live. */
6211 switches[switchnum].live_cond |= SWITCH_LIVE;
6215 /* Pass a switch to the current accumulating command
6216 in the same form that we received it.
6217 SWITCHNUM identifies the switch; it is an index into
6218 the vector of switches gcc received, which is `switches'.
6219 This cannot fail since it never finishes a command line.
6221 If OMIT_FIRST_WORD is nonzero, then we omit .part1 of the argument. */
6224 give_switch (int switchnum, int omit_first_word)
6226 if ((switches[switchnum].live_cond & SWITCH_IGNORE) != 0)
6229 if (!omit_first_word)
6231 do_spec_1 ("-", 0, NULL);
6232 do_spec_1 (switches[switchnum].part1, 1, NULL);
6235 if (switches[switchnum].args != 0)
6238 for (p = switches[switchnum].args; *p; p++)
6240 const char *arg = *p;
6242 do_spec_1 (" ", 0, NULL);
6245 unsigned length = strlen (arg);
6248 while (length-- && !IS_DIR_SEPARATOR (arg[length]))
6249 if (arg[length] == '.')
6251 (CONST_CAST(char *, arg))[length] = 0;
6255 do_spec_1 (arg, 1, NULL);
6257 (CONST_CAST(char *, arg))[length] = '.';
6258 do_spec_1 (suffix_subst, 1, NULL);
6261 do_spec_1 (arg, 1, NULL);
6265 do_spec_1 (" ", 0, NULL);
6266 switches[switchnum].validated = 1;
6269 /* Search for a file named NAME trying various prefixes including the
6270 user's -B prefix and some standard ones.
6271 Return the absolute file name found. If nothing is found, return NAME. */
6274 find_file (const char *name)
6276 char *newname = find_a_file (&startfile_prefixes, name, R_OK, true);
6277 return newname ? newname : name;
6280 /* Determine whether a directory exists. If LINKER, return 0 for
6281 certain fixed names not needed by the linker. */
6284 is_directory (const char *path1, bool linker)
6291 /* Ensure the string ends with "/.". The resulting path will be a
6292 directory even if the given path is a symbolic link. */
6293 len1 = strlen (path1);
6294 path = (char *) alloca (3 + len1);
6295 memcpy (path, path1, len1);
6297 if (!IS_DIR_SEPARATOR (cp[-1]))
6298 *cp++ = DIR_SEPARATOR;
6302 /* Exclude directories that the linker is known to search. */
6304 && IS_DIR_SEPARATOR (path[0])
6306 && strncmp (path + 1, "lib", 3) == 0)
6308 && strncmp (path + 1, "usr", 3) == 0
6309 && IS_DIR_SEPARATOR (path[4])
6310 && strncmp (path + 5, "lib", 3) == 0)))
6313 return (stat (path, &st) >= 0 && S_ISDIR (st.st_mode));
6316 /* Set up the various global variables to indicate that we're processing
6317 the input file named FILENAME. */
6320 set_input (const char *filename)
6324 gcc_input_filename = filename;
6325 input_filename_length = strlen (gcc_input_filename);
6326 input_basename = lbasename (gcc_input_filename);
6328 /* Find a suffix starting with the last period,
6329 and set basename_length to exclude that suffix. */
6330 basename_length = strlen (input_basename);
6331 suffixed_basename_length = basename_length;
6332 p = input_basename + basename_length;
6333 while (p != input_basename && *p != '.')
6335 if (*p == '.' && p != input_basename)
6337 basename_length = p - input_basename;
6338 input_suffix = p + 1;
6343 /* If a spec for 'g', 'u', or 'U' is seen with -save-temps then
6344 we will need to do a stat on the gcc_input_filename. The
6345 INPUT_STAT_SET signals that the stat is needed. */
6349 /* On fatal signals, delete all the temporary files. */
6352 fatal_signal (int signum)
6354 signal (signum, SIG_DFL);
6355 delete_failure_queue ();
6356 delete_temp_files ();
6357 /* Get the same signal again, this time not handled,
6358 so its normal effect occurs. */
6359 kill (getpid (), signum);
6362 /* Compare the contents of the two files named CMPFILE[0] and
6363 CMPFILE[1]. Return zero if they're identical, nonzero
6367 compare_files (char *cmpfile[])
6370 FILE *temp[2] = { NULL, NULL };
6376 void *map[2] = { NULL, NULL };
6378 for (i = 0; i < 2; i++)
6382 if (stat (cmpfile[i], &st) < 0 || !S_ISREG (st.st_mode))
6384 error ("%s: could not determine length of compare-debug file %s",
6385 gcc_input_filename, cmpfile[i]);
6390 length[i] = st.st_size;
6393 if (!ret && length[0] != length[1])
6395 error ("%s: -fcompare-debug failure (length)", gcc_input_filename);
6400 for (i = 0; i < 2; i++)
6402 int fd = open (cmpfile[i], O_RDONLY);
6405 error ("%s: could not open compare-debug file %s",
6406 gcc_input_filename, cmpfile[i]);
6411 map[i] = mmap (NULL, length[i], PROT_READ, MAP_PRIVATE, fd, 0);
6414 if (map[i] == (void *) MAP_FAILED)
6423 if (memcmp (map[0], map[1], length[0]) != 0)
6425 error ("%s: -fcompare-debug failure", gcc_input_filename);
6430 for (i = 0; i < 2; i++)
6432 munmap ((caddr_t) map[i], length[i]);
6441 for (i = 0; i < 2; i++)
6443 temp[i] = fopen (cmpfile[i], "r");
6446 error ("%s: could not open compare-debug file %s",
6447 gcc_input_filename, cmpfile[i]);
6453 if (!ret && temp[0] && temp[1])
6457 c0 = fgetc (temp[0]);
6458 c1 = fgetc (temp[1]);
6462 error ("%s: -fcompare-debug failure",
6463 gcc_input_filename);
6472 for (i = 1; i >= 0; i--)
6481 extern int main (int, char **);
6484 main (int argc, char **argv)
6488 int linker_was_run = 0;
6489 int lang_n_infiles = 0;
6490 int num_linker_inputs = 0;
6491 char *explicit_link_files;
6494 struct user_specs *uptr;
6495 char **old_argv = argv;
6497 /* Initialize here, not in definition. The IRIX 6 O32 cc sometimes chokes
6498 on ?: in file-scope variable initializations. */
6499 asm_debug = ASM_DEBUG_SPEC;
6501 p = argv[0] + strlen (argv[0]);
6502 while (p != argv[0] && !IS_DIR_SEPARATOR (p[-1]))
6506 xmalloc_set_program_name (progname);
6508 expandargv (&argc, &argv);
6510 /* Determine if any expansions were made. */
6511 if (argv != old_argv)
6512 at_file_supplied = true;
6514 prune_options (&argc, &argv);
6516 #ifdef GCC_DRIVER_HOST_INITIALIZATION
6517 /* Perform host dependent initialization when needed. */
6518 GCC_DRIVER_HOST_INITIALIZATION;
6521 /* Unlock the stdio streams. */
6522 unlock_std_streams ();
6524 gcc_init_libintl ();
6526 diagnostic_initialize (global_dc, 0);
6527 if (atexit (delete_temp_files) != 0)
6528 fatal_error ("atexit failed");
6530 if (signal (SIGINT, SIG_IGN) != SIG_IGN)
6531 signal (SIGINT, fatal_signal);
6533 if (signal (SIGHUP, SIG_IGN) != SIG_IGN)
6534 signal (SIGHUP, fatal_signal);
6536 if (signal (SIGTERM, SIG_IGN) != SIG_IGN)
6537 signal (SIGTERM, fatal_signal);
6539 if (signal (SIGPIPE, SIG_IGN) != SIG_IGN)
6540 signal (SIGPIPE, fatal_signal);
6543 /* We *MUST* set SIGCHLD to SIG_DFL so that the wait4() call will
6544 receive the signal. A different setting is inheritable */
6545 signal (SIGCHLD, SIG_DFL);
6548 /* Allocate the argument vector. */
6551 obstack_init (&obstack);
6553 /* Build multilib_select, et. al from the separate lines that make up each
6554 multilib selection. */
6556 const char *const *q = multilib_raw;
6559 obstack_init (&multilib_obstack);
6560 while ((p = *q++) != (char *) 0)
6561 obstack_grow (&multilib_obstack, p, strlen (p));
6563 obstack_1grow (&multilib_obstack, 0);
6564 multilib_select = XOBFINISH (&multilib_obstack, const char *);
6566 q = multilib_matches_raw;
6567 while ((p = *q++) != (char *) 0)
6568 obstack_grow (&multilib_obstack, p, strlen (p));
6570 obstack_1grow (&multilib_obstack, 0);
6571 multilib_matches = XOBFINISH (&multilib_obstack, const char *);
6573 q = multilib_exclusions_raw;
6574 while ((p = *q++) != (char *) 0)
6575 obstack_grow (&multilib_obstack, p, strlen (p));
6577 obstack_1grow (&multilib_obstack, 0);
6578 multilib_exclusions = XOBFINISH (&multilib_obstack, const char *);
6581 for (i = 0; i < ARRAY_SIZE (multilib_defaults_raw); i++)
6584 obstack_1grow (&multilib_obstack, ' ');
6585 obstack_grow (&multilib_obstack,
6586 multilib_defaults_raw[i],
6587 strlen (multilib_defaults_raw[i]));
6591 obstack_1grow (&multilib_obstack, 0);
6592 multilib_defaults = XOBFINISH (&multilib_obstack, const char *);
6595 #ifdef INIT_ENVIRONMENT
6596 /* Set up any other necessary machine specific environment variables. */
6597 xputenv (INIT_ENVIRONMENT);
6600 /* Make a table of what switches there are (switches, n_switches).
6601 Make a table of specified input files (infiles, n_infiles).
6602 Decode switches that are handled locally. */
6604 process_command (argc, CONST_CAST2 (const char **, char **, argv));
6606 /* Initialize the vector of specs to just the default.
6607 This means one element containing 0s, as a terminator. */
6609 compilers = XNEWVAR (struct compiler, sizeof default_compilers);
6610 memcpy (compilers, default_compilers, sizeof default_compilers);
6611 n_compilers = n_default_compilers;
6613 /* Read specs from a file if there is one. */
6615 machine_suffix = concat (spec_machine, dir_separator_str,
6616 spec_version, dir_separator_str, NULL);
6617 just_machine_suffix = concat (spec_machine, dir_separator_str, NULL);
6619 specs_file = find_a_file (&startfile_prefixes, "specs", R_OK, true);
6620 /* Read the specs file unless it is a default one. */
6621 if (specs_file != 0 && strcmp (specs_file, "specs"))
6622 read_specs (specs_file, TRUE);
6626 /* We need to check standard_exec_prefix/just_machine_suffix/specs
6627 for any override of as, ld and libraries. */
6628 specs_file = (char *) alloca (strlen (standard_exec_prefix)
6629 + strlen (just_machine_suffix) + sizeof ("specs"));
6631 strcpy (specs_file, standard_exec_prefix);
6632 strcat (specs_file, just_machine_suffix);
6633 strcat (specs_file, "specs");
6634 if (access (specs_file, R_OK) == 0)
6635 read_specs (specs_file, TRUE);
6637 /* Process any configure-time defaults specified for the command line
6638 options, via OPTION_DEFAULT_SPECS. */
6639 for (i = 0; i < ARRAY_SIZE (option_default_specs); i++)
6640 do_option_spec (option_default_specs[i].name,
6641 option_default_specs[i].spec);
6643 /* Process DRIVER_SELF_SPECS, adding any new options to the end
6644 of the command line. */
6646 for (i = 0; i < ARRAY_SIZE (driver_self_specs); i++)
6647 do_self_spec (driver_self_specs[i]);
6651 enum save_temps save;
6653 if (!compare_debug_second)
6655 n_switches_debug_check[1] = n_switches;
6656 switches_debug_check[1] = XDUPVEC (struct switchstr, switches,
6659 do_self_spec ("%:compare-debug-self-opt()");
6660 n_switches_debug_check[0] = n_switches;
6661 switches_debug_check[0] = switches;
6663 n_switches = n_switches_debug_check[1];
6664 switches = switches_debug_check[1];
6667 /* Avoid crash when computing %j in this early. */
6668 save = save_temps_flag;
6669 save_temps_flag = SAVE_TEMPS_NONE;
6671 compare_debug = -compare_debug;
6672 do_self_spec ("%:compare-debug-self-opt()");
6674 save_temps_flag = save;
6676 if (!compare_debug_second)
6678 n_switches_debug_check[1] = n_switches;
6679 switches_debug_check[1] = switches;
6680 compare_debug = -compare_debug;
6681 n_switches = n_switches_debug_check[0];
6682 switches = switches_debug_check[0];
6686 /* If not cross-compiling, look for executables in the standard
6688 if (*cross_compile == '0')
6690 if (*md_exec_prefix)
6692 add_prefix (&exec_prefixes, md_exec_prefix, "GCC",
6693 PREFIX_PRIORITY_LAST, 0, 0);
6697 /* Process sysroot_suffix_spec. */
6698 if (*sysroot_suffix_spec != 0
6699 && do_spec_2 (sysroot_suffix_spec) == 0)
6701 if (argbuf_index > 1)
6702 error ("spec failure: more than one arg to SYSROOT_SUFFIX_SPEC");
6703 else if (argbuf_index == 1)
6704 target_sysroot_suffix = xstrdup (argbuf[argbuf_index -1]);
6707 #ifdef HAVE_LD_SYSROOT
6708 /* Pass the --sysroot option to the linker, if it supports that. If
6709 there is a sysroot_suffix_spec, it has already been processed by
6710 this point, so target_system_root really is the system root we
6712 if (target_system_root)
6714 obstack_grow (&obstack, "%(sysroot_spec) ", strlen ("%(sysroot_spec) "));
6715 obstack_grow0 (&obstack, link_spec, strlen (link_spec));
6716 set_spec ("link", XOBFINISH (&obstack, const char *));
6720 /* Process sysroot_hdrs_suffix_spec. */
6721 if (*sysroot_hdrs_suffix_spec != 0
6722 && do_spec_2 (sysroot_hdrs_suffix_spec) == 0)
6724 if (argbuf_index > 1)
6725 error ("spec failure: more than one arg to SYSROOT_HEADERS_SUFFIX_SPEC");
6726 else if (argbuf_index == 1)
6727 target_sysroot_hdrs_suffix = xstrdup (argbuf[argbuf_index -1]);
6730 /* Look for startfiles in the standard places. */
6731 if (*startfile_prefix_spec != 0
6732 && do_spec_2 (startfile_prefix_spec) == 0
6733 && do_spec_1 (" ", 0, NULL) == 0)
6736 for (ndx = 0; ndx < argbuf_index; ndx++)
6737 add_sysrooted_prefix (&startfile_prefixes, argbuf[ndx], "BINUTILS",
6738 PREFIX_PRIORITY_LAST, 0, 1);
6740 /* We should eventually get rid of all these and stick to
6741 startfile_prefix_spec exclusively. */
6742 else if (*cross_compile == '0' || target_system_root)
6744 if (*md_startfile_prefix)
6745 add_sysrooted_prefix (&startfile_prefixes, md_startfile_prefix,
6746 "GCC", PREFIX_PRIORITY_LAST, 0, 1);
6748 if (*md_startfile_prefix_1)
6749 add_sysrooted_prefix (&startfile_prefixes, md_startfile_prefix_1,
6750 "GCC", PREFIX_PRIORITY_LAST, 0, 1);
6752 /* If standard_startfile_prefix is relative, base it on
6753 standard_exec_prefix. This lets us move the installed tree
6754 as a unit. If GCC_EXEC_PREFIX is defined, base
6755 standard_startfile_prefix on that as well.
6757 If the prefix is relative, only search it for native compilers;
6758 otherwise we will search a directory containing host libraries. */
6759 if (IS_ABSOLUTE_PATH (standard_startfile_prefix))
6760 add_sysrooted_prefix (&startfile_prefixes,
6761 standard_startfile_prefix, "BINUTILS",
6762 PREFIX_PRIORITY_LAST, 0, 1);
6763 else if (*cross_compile == '0')
6765 add_prefix (&startfile_prefixes,
6766 concat (gcc_exec_prefix
6767 ? gcc_exec_prefix : standard_exec_prefix,
6769 standard_startfile_prefix, NULL),
6770 NULL, PREFIX_PRIORITY_LAST, 0, 1);
6773 /* Sysrooted prefixes are relocated because target_system_root is
6774 also relocated by gcc_exec_prefix. */
6775 if (*standard_startfile_prefix_1)
6776 add_sysrooted_prefix (&startfile_prefixes,
6777 standard_startfile_prefix_1, "BINUTILS",
6778 PREFIX_PRIORITY_LAST, 0, 1);
6779 if (*standard_startfile_prefix_2)
6780 add_sysrooted_prefix (&startfile_prefixes,
6781 standard_startfile_prefix_2, "BINUTILS",
6782 PREFIX_PRIORITY_LAST, 0, 1);
6785 /* Process any user specified specs in the order given on the command
6787 for (uptr = user_specs_head; uptr; uptr = uptr->next)
6789 char *filename = find_a_file (&startfile_prefixes, uptr->filename,
6791 read_specs (filename ? filename : uptr->filename, FALSE);
6794 /* If we have a GCC_EXEC_PREFIX envvar, modify it for cpp's sake. */
6795 if (gcc_exec_prefix)
6796 gcc_exec_prefix = concat (gcc_exec_prefix, spec_machine, dir_separator_str,
6797 spec_version, dir_separator_str, NULL);
6799 /* Now we have the specs.
6800 Set the `valid' bits for switches that match anything in any spec. */
6802 validate_all_switches ();
6804 /* Now that we have the switches and the specs, set
6805 the subdirectory based on the options. */
6806 set_multilib_dir ();
6808 /* Set up to remember the pathname of gcc and any options
6809 needed for collect. We use argv[0] instead of progname because
6810 we need the complete pathname. */
6811 obstack_init (&collect_obstack);
6812 obstack_grow (&collect_obstack, "COLLECT_GCC=", sizeof ("COLLECT_GCC=") - 1);
6813 obstack_grow (&collect_obstack, argv[0], strlen (argv[0]) + 1);
6814 xputenv (XOBFINISH (&collect_obstack, char *));
6816 /* Set up to remember the pathname of the lto wrapper. */
6818 lto_wrapper_spec = find_a_file (&exec_prefixes, "lto-wrapper", X_OK, false);
6819 if (lto_wrapper_spec)
6821 obstack_init (&collect_obstack);
6822 obstack_grow (&collect_obstack, "COLLECT_LTO_WRAPPER=",
6823 sizeof ("COLLECT_LTO_WRAPPER=") - 1);
6824 obstack_grow (&collect_obstack, lto_wrapper_spec,
6825 strlen (lto_wrapper_spec) + 1);
6826 xputenv (XOBFINISH (&collect_obstack, char *));
6829 /* Warn about any switches that no pass was interested in. */
6831 for (i = 0; (int) i < n_switches; i++)
6832 if (! switches[i].validated)
6833 error ("unrecognized option %<-%s%>", switches[i].part1);
6835 /* Obey some of the options. */
6837 if (print_search_dirs)
6839 printf (_("install: %s%s\n"),
6840 gcc_exec_prefix ? gcc_exec_prefix : standard_exec_prefix,
6841 gcc_exec_prefix ? "" : machine_suffix);
6842 printf (_("programs: %s\n"),
6843 build_search_list (&exec_prefixes, "", false, false));
6844 printf (_("libraries: %s\n"),
6845 build_search_list (&startfile_prefixes, "", false, true));
6849 if (print_file_name)
6851 printf ("%s\n", find_file (print_file_name));
6855 if (print_prog_name)
6857 char *newname = find_a_file (&exec_prefixes, print_prog_name, X_OK, 0);
6858 printf ("%s\n", (newname ? newname : print_prog_name));
6862 if (print_multi_lib)
6864 print_multilib_info ();
6868 if (print_multi_directory)
6870 if (multilib_dir == NULL)
6873 printf ("%s\n", multilib_dir);
6879 if (target_system_root)
6881 if (target_sysroot_suffix)
6882 printf ("%s%s\n", target_system_root, target_sysroot_suffix);
6884 printf ("%s\n", target_system_root);
6889 if (print_multi_os_directory)
6891 if (multilib_os_dir == NULL)
6894 printf ("%s\n", multilib_os_dir);
6898 if (print_sysroot_headers_suffix)
6900 if (*sysroot_hdrs_suffix_spec)
6902 printf("%s\n", (target_sysroot_hdrs_suffix
6903 ? target_sysroot_hdrs_suffix
6908 /* The error status indicates that only one set of fixed
6909 headers should be built. */
6910 fatal_error ("not configured with sysroot headers suffix");
6913 if (print_help_list)
6919 printf (_("\nFor bug reporting instructions, please see:\n"));
6920 printf ("%s.\n", bug_report_url);
6925 /* We do not exit here. Instead we have created a fake input file
6926 called 'help-dummy' which needs to be compiled, and we pass this
6927 on the various sub-processes, along with the --help switch.
6928 Ensure their output appears after ours. */
6929 fputc ('\n', stdout);
6935 printf (_("%s %s%s\n"), progname, pkgversion_string,
6937 printf ("Copyright %s 2010 Free Software Foundation, Inc.\n",
6939 fputs (_("This is free software; see the source for copying conditions. There is NO\n\
6940 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\n"),
6945 /* We do not exit here. We use the same mechanism of --help to print
6946 the version of the sub-processes. */
6947 fputc ('\n', stdout);
6956 fnotice (stderr, "Target: %s\n", spec_machine);
6957 fnotice (stderr, "Configured with: %s\n", configuration_arguments);
6959 #ifdef THREAD_MODEL_SPEC
6960 /* We could have defined THREAD_MODEL_SPEC to "%*" by default,
6961 but there's no point in doing all this processing just to get
6962 thread_model back. */
6963 obstack_init (&obstack);
6964 do_spec_1 (THREAD_MODEL_SPEC, 0, thread_model);
6965 obstack_1grow (&obstack, '\0');
6966 thrmod = XOBFINISH (&obstack, const char *);
6968 thrmod = thread_model;
6971 fnotice (stderr, "Thread model: %s\n", thrmod);
6973 /* compiler_version is truncated at the first space when initialized
6974 from version string, so truncate version_string at the first space
6975 before comparing. */
6976 for (n = 0; version_string[n]; n++)
6977 if (version_string[n] == ' ')
6980 if (! strncmp (version_string, compiler_version, n)
6981 && compiler_version[n] == 0)
6982 fnotice (stderr, "gcc version %s %s\n", version_string,
6985 fnotice (stderr, "gcc driver version %s %sexecuting gcc version %s\n",
6986 version_string, pkgversion_string, compiler_version);
6992 if (n_infiles == added_libraries)
6993 fatal_error ("no input files");
6995 /* Make a place to record the compiler output file names
6996 that correspond to the input files. */
6999 i += lang_specific_extra_outfiles;
7000 outfiles = XCNEWVEC (const char *, i);
7002 /* Record which files were specified explicitly as link input. */
7004 explicit_link_files = XCNEWVEC (char, n_infiles);
7007 combine_inputs = true;
7009 combine_inputs = false;
7011 for (i = 0; (int) i < n_infiles; i++)
7013 const char *name = infiles[i].name;
7014 struct compiler *compiler = lookup_compiler (name,
7016 infiles[i].language);
7018 if (compiler && !(compiler->combinable))
7019 combine_inputs = false;
7021 if (lang_n_infiles > 0 && compiler != input_file_compiler
7022 && infiles[i].language && infiles[i].language[0] != '*')
7023 infiles[i].incompiler = compiler;
7027 input_file_compiler = compiler;
7028 infiles[i].incompiler = compiler;
7032 /* Since there is no compiler for this input file, assume it is a
7034 explicit_link_files[i] = 1;
7035 infiles[i].incompiler = NULL;
7037 infiles[i].compiled = false;
7038 infiles[i].preprocessed = false;
7041 if (!combine_inputs && have_c && have_o && lang_n_infiles > 1)
7042 fatal_error ("cannot specify -o with -c, -S or -E with multiple files");
7044 if (combine_flag && save_temps_flag)
7046 bool save_combine_inputs = combine_inputs;
7047 /* Must do a separate pre-processing pass for C & Objective-C files, to
7048 obtain individual .i files. */
7050 combine_inputs = false;
7051 for (i = 0; (int) i < n_infiles; i++)
7053 int this_file_error = 0;
7055 input_file_number = i;
7056 set_input (infiles[i].name);
7057 if (infiles[i].incompiler
7058 && (infiles[i].incompiler)->needs_preprocessing)
7059 input_file_compiler = infiles[i].incompiler;
7063 if (input_file_compiler)
7065 if (input_file_compiler->spec[0] == '#')
7067 error ("%s: %s compiler not installed on this system",
7068 gcc_input_filename, &input_file_compiler->spec[1]);
7069 this_file_error = 1;
7073 value = do_spec (input_file_compiler->spec);
7074 infiles[i].preprocessed = true;
7075 if (!have_o_argbuf_index)
7076 fatal_error ("spec %qs is invalid",
7077 input_file_compiler->spec);
7078 infiles[i].name = argbuf[have_o_argbuf_index];
7079 infiles[i].incompiler
7080 = lookup_compiler (infiles[i].name,
7081 strlen (infiles[i].name),
7082 infiles[i].language);
7085 this_file_error = 1;
7089 if (this_file_error)
7091 delete_failure_queue ();
7095 clear_failure_queue ();
7097 combine_inputs = save_combine_inputs;
7100 for (i = 0; (int) i < n_infiles; i++)
7102 int this_file_error = 0;
7104 /* Tell do_spec what to substitute for %i. */
7106 input_file_number = i;
7107 set_input (infiles[i].name);
7109 if (infiles[i].compiled)
7112 /* Use the same thing in %o, unless cp->spec says otherwise. */
7114 outfiles[i] = gcc_input_filename;
7116 /* Figure out which compiler from the file's suffix. */
7118 if (! combine_inputs)
7120 = lookup_compiler (infiles[i].name, input_filename_length,
7121 infiles[i].language);
7123 input_file_compiler = infiles[i].incompiler;
7125 if (input_file_compiler)
7127 /* Ok, we found an applicable compiler. Run its spec. */
7129 if (input_file_compiler->spec[0] == '#')
7131 error ("%s: %s compiler not installed on this system",
7132 gcc_input_filename, &input_file_compiler->spec[1]);
7133 this_file_error = 1;
7139 if (debug_check_temp_file[0])
7140 free (debug_check_temp_file[0]);
7141 debug_check_temp_file[0] = NULL;
7143 if (debug_check_temp_file[1])
7144 free (debug_check_temp_file[1]);
7145 debug_check_temp_file[1] = NULL;
7148 value = do_spec (input_file_compiler->spec);
7149 infiles[i].compiled = true;
7151 this_file_error = 1;
7152 else if (compare_debug && debug_check_temp_file[0])
7155 inform (0, "recompiling with -fcompare-debug");
7157 compare_debug = -compare_debug;
7158 n_switches = n_switches_debug_check[1];
7159 switches = switches_debug_check[1];
7161 value = do_spec (input_file_compiler->spec);
7163 compare_debug = -compare_debug;
7164 n_switches = n_switches_debug_check[0];
7165 switches = switches_debug_check[0];
7169 error ("during -fcompare-debug recompilation");
7170 this_file_error = 1;
7173 gcc_assert (debug_check_temp_file[1]
7174 && strcmp (debug_check_temp_file[0],
7175 debug_check_temp_file[1]));
7178 inform (0, "comparing final insns dumps");
7180 if (compare_files (debug_check_temp_file))
7181 this_file_error = 1;
7186 if (debug_check_temp_file[0])
7187 free (debug_check_temp_file[0]);
7188 debug_check_temp_file[0] = NULL;
7190 if (debug_check_temp_file[1])
7191 free (debug_check_temp_file[1]);
7192 debug_check_temp_file[1] = NULL;
7197 /* If this file's name does not contain a recognized suffix,
7198 record it as explicit linker input. */
7201 explicit_link_files[i] = 1;
7203 /* Clear the delete-on-failure queue, deleting the files in it
7204 if this compilation failed. */
7206 if (this_file_error)
7208 delete_failure_queue ();
7211 /* If this compilation succeeded, don't delete those files later. */
7212 clear_failure_queue ();
7215 /* Reset the input file name to the first compile/object file name, for use
7216 with %b in LINK_SPEC. We use the first input file that we can find
7217 a compiler to compile it instead of using infiles.language since for
7218 languages other than C we use aliases that we then lookup later. */
7223 for (i = 0; i < n_infiles ; i++)
7224 if (infiles[i].language && infiles[i].language[0] != '*')
7226 set_input (infiles[i].name);
7233 /* Make sure INPUT_FILE_NUMBER points to first available open
7235 input_file_number = n_infiles;
7236 if (lang_specific_pre_link ())
7240 /* Determine if there are any linker input files. */
7241 num_linker_inputs = 0;
7242 for (i = 0; (int) i < n_infiles; i++)
7243 if (explicit_link_files[i] || outfiles[i] != NULL)
7244 num_linker_inputs++;
7246 /* Run ld to link all the compiler output files. */
7248 if (num_linker_inputs > 0 && !seen_error () && print_subprocess_help < 2)
7250 int tmp = execution_count;
7251 const char *fuse_linker_plugin = "fuse-linker-plugin";
7253 /* We'll use ld if we can't find collect2. */
7254 if (! strcmp (linker_name_spec, "collect2"))
7256 char *s = find_a_file (&exec_prefixes, "collect2", X_OK, false);
7258 linker_name_spec = "ld";
7261 if (switch_matches (fuse_linker_plugin,
7262 fuse_linker_plugin + strlen (fuse_linker_plugin), 0))
7264 linker_plugin_file_spec = find_a_file (&exec_prefixes,
7265 "liblto_plugin.so", R_OK,
7267 if (!linker_plugin_file_spec)
7268 fatal_error ("-fuse-linker-plugin, but liblto_plugin.so not found");
7270 lto_libgcc_spec = find_a_file (&startfile_prefixes, "libgcc.a",
7272 if (!lto_libgcc_spec)
7273 fatal_error ("could not find libgcc.a");
7275 lto_gcc_spec = argv[0];
7277 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
7279 putenv_from_prefixes (&exec_prefixes, "COMPILER_PATH", false);
7280 putenv_from_prefixes (&startfile_prefixes, LIBRARY_PATH_ENV, true);
7282 if (print_subprocess_help == 1)
7284 printf (_("\nLinker options\n==============\n\n"));
7285 printf (_("Use \"-Wl,OPTION\" to pass \"OPTION\""
7286 " to the linker.\n\n"));
7289 value = do_spec (link_command_spec);
7292 linker_was_run = (tmp != execution_count);
7295 /* If options said don't run linker,
7296 complain about input files to be given to the linker. */
7298 if (! linker_was_run && !seen_error ())
7299 for (i = 0; (int) i < n_infiles; i++)
7300 if (explicit_link_files[i]
7301 && !(infiles[i].language && infiles[i].language[0] == '*'))
7302 warning (0, "%s: linker input file unused because linking not done",
7305 /* Delete some or all of the temporary files we made. */
7308 delete_failure_queue ();
7309 delete_temp_files ();
7311 if (print_help_list)
7313 printf (("\nFor bug reporting instructions, please see:\n"));
7314 printf ("%s\n", bug_report_url);
7317 return (signal_count != 0 ? 2
7318 : seen_error () ? (pass_exit_codes ? greatest_status : 1)
7322 /* Find the proper compilation spec for the file name NAME,
7323 whose length is LENGTH. LANGUAGE is the specified language,
7324 or 0 if this file is to be passed to the linker. */
7326 static struct compiler *
7327 lookup_compiler (const char *name, size_t length, const char *language)
7329 struct compiler *cp;
7331 /* If this was specified by the user to be a linker input, indicate that. */
7332 if (language != 0 && language[0] == '*')
7335 /* Otherwise, look for the language, if one is spec'd. */
7338 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
7339 if (cp->suffix[0] == '@' && !strcmp (cp->suffix + 1, language))
7342 error ("language %s not recognized", language);
7346 /* Look for a suffix. */
7347 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
7349 if (/* The suffix `-' matches only the file name `-'. */
7350 (!strcmp (cp->suffix, "-") && !strcmp (name, "-"))
7351 || (strlen (cp->suffix) < length
7352 /* See if the suffix matches the end of NAME. */
7353 && !strcmp (cp->suffix,
7354 name + length - strlen (cp->suffix))
7359 #if defined (OS2) ||defined (HAVE_DOS_BASED_FILE_SYSTEM)
7360 /* Look again, but case-insensitively this time. */
7362 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
7364 if (/* The suffix `-' matches only the file name `-'. */
7365 (!strcmp (cp->suffix, "-") && !strcmp (name, "-"))
7366 || (strlen (cp->suffix) < length
7367 /* See if the suffix matches the end of NAME. */
7368 && ((!strcmp (cp->suffix,
7369 name + length - strlen (cp->suffix))
7370 || !strpbrk (cp->suffix, "ABCDEFGHIJKLMNOPQRSTUVWXYZ"))
7371 && !strcasecmp (cp->suffix,
7372 name + length - strlen (cp->suffix)))
7378 if (cp >= compilers)
7380 if (cp->spec[0] != '@')
7381 /* A non-alias entry: return it. */
7384 /* An alias entry maps a suffix to a language.
7385 Search for the language; pass 0 for NAME and LENGTH
7386 to avoid infinite recursion if language not found. */
7387 return lookup_compiler (NULL, 0, cp->spec + 1);
7393 save_string (const char *s, int len)
7395 char *result = XNEWVEC (char, len + 1);
7397 memcpy (result, s, len);
7403 pfatal_with_name (const char *name)
7405 perror_with_name (name);
7406 delete_temp_files ();
7411 perror_with_name (const char *name)
7413 error ("%s: %m", name);
7417 validate_switches_from_spec (const char *spec)
7419 const char *p = spec;
7422 if (c == '%' && (*p == '{' || *p == '<' || (*p == 'W' && *++p == '{')))
7423 /* We have a switch spec. */
7424 p = validate_switches (p + 1);
7428 validate_all_switches (void)
7430 struct compiler *comp;
7431 struct spec_list *spec;
7433 for (comp = compilers; comp->spec; comp++)
7434 validate_switches_from_spec (comp->spec);
7436 /* Look through the linked list of specs read from the specs file. */
7437 for (spec = specs; spec; spec = spec->next)
7438 validate_switches_from_spec (*spec->ptr_spec);
7440 validate_switches_from_spec (link_command_spec);
7443 /* Look at the switch-name that comes after START
7444 and mark as valid all supplied switches that match it. */
7447 validate_switches (const char *start)
7449 const char *p = start;
7453 bool suffix = false;
7454 bool starred = false;
7456 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
7465 if (*p == '.' || *p == ',')
7469 while (ISIDNUM (*p) || *p == '-' || *p == '+' || *p == '='
7470 || *p == ',' || *p == '.' || *p == '@')
7475 starred = true, p++;
7481 /* Mark all matching switches as valid. */
7482 for (i = 0; i < n_switches; i++)
7483 if (!strncmp (switches[i].part1, atom, len)
7484 && (starred || switches[i].part1[len] == 0))
7485 switches[i].validated = 1;
7489 if (*p && (p[-1] == '|' || p[-1] == '&'))
7492 if (*p && p[-1] == ':')
7494 while (*p && *p != ';' && *p != '}')
7499 if (*p == '{' || *p == '<')
7500 p = validate_switches (p+1);
7501 else if (p[0] == 'W' && p[1] == '{')
7502 p = validate_switches (p+2);
7509 if (*p && p[-1] == ';')
7523 static struct mdswitchstr *mdswitches;
7524 static int n_mdswitches;
7526 /* Check whether a particular argument was used. The first time we
7527 canonicalize the switches to keep only the ones we care about. */
7530 used_arg (const char *p, int len)
7535 const char *replace;
7540 static struct mswitchstr *mswitches;
7541 static int n_mswitches;
7546 struct mswitchstr *matches;
7550 /* Break multilib_matches into the component strings of string
7551 and replacement string. */
7552 for (q = multilib_matches; *q != '\0'; q++)
7557 = (struct mswitchstr *) alloca ((sizeof (struct mswitchstr)) * cnt);
7559 q = multilib_matches;
7568 fatal_error ("multilib spec %qs is invalid",
7573 matches[i].len = q - matches[i].str;
7575 matches[i].replace = ++q;
7576 while (*q != ';' && *q != '\0')
7579 goto invalid_matches;
7582 matches[i].rep_len = q - matches[i].replace;
7588 /* Now build a list of the replacement string for switches that we care
7589 about. Make sure we allocate at least one entry. This prevents
7590 xmalloc from calling fatal, and prevents us from re-executing this
7593 = XNEWVEC (struct mswitchstr, n_mdswitches + (n_switches ? n_switches : 1));
7594 for (i = 0; i < n_switches; i++)
7595 if ((switches[i].live_cond & SWITCH_IGNORE) == 0)
7597 int xlen = strlen (switches[i].part1);
7598 for (j = 0; j < cnt; j++)
7599 if (xlen == matches[j].len
7600 && ! strncmp (switches[i].part1, matches[j].str, xlen))
7602 mswitches[n_mswitches].str = matches[j].replace;
7603 mswitches[n_mswitches].len = matches[j].rep_len;
7604 mswitches[n_mswitches].replace = (char *) 0;
7605 mswitches[n_mswitches].rep_len = 0;
7611 /* Add MULTILIB_DEFAULTS switches too, as long as they were not present
7612 on the command line nor any options mutually incompatible with
7614 for (i = 0; i < n_mdswitches; i++)
7618 for (q = multilib_options; *q != '\0'; q++)
7624 while (strncmp (q, mdswitches[i].str, mdswitches[i].len) != 0
7625 || strchr (" /", q[mdswitches[i].len]) == NULL)
7627 while (*q != ' ' && *q != '/' && *q != '\0')
7634 if (*q != ' ' && *q != '\0')
7636 while (*r != ' ' && *r != '\0')
7639 while (*q != ' ' && *q != '/' && *q != '\0')
7642 if (used_arg (r, q - r))
7647 mswitches[n_mswitches].str = mdswitches[i].str;
7648 mswitches[n_mswitches].len = mdswitches[i].len;
7649 mswitches[n_mswitches].replace = (char *) 0;
7650 mswitches[n_mswitches].rep_len = 0;
7663 for (i = 0; i < n_mswitches; i++)
7664 if (len == mswitches[i].len && ! strncmp (p, mswitches[i].str, len))
7671 default_arg (const char *p, int len)
7675 for (i = 0; i < n_mdswitches; i++)
7676 if (len == mdswitches[i].len && ! strncmp (p, mdswitches[i].str, len))
7682 /* Work out the subdirectory to use based on the options. The format of
7683 multilib_select is a list of elements. Each element is a subdirectory
7684 name followed by a list of options followed by a semicolon. The format
7685 of multilib_exclusions is the same, but without the preceding
7686 directory. First gcc will check the exclusions, if none of the options
7687 beginning with an exclamation point are present, and all of the other
7688 options are present, then we will ignore this completely. Passing
7689 that, gcc will consider each multilib_select in turn using the same
7690 rules for matching the options. If a match is found, that subdirectory
7694 set_multilib_dir (void)
7697 unsigned int this_path_len;
7698 const char *this_path, *this_arg;
7699 const char *start, *end;
7701 int ok, ndfltok, first;
7704 start = multilib_defaults;
7705 while (*start == ' ' || *start == '\t')
7707 while (*start != '\0')
7710 while (*start != ' ' && *start != '\t' && *start != '\0')
7712 while (*start == ' ' || *start == '\t')
7720 mdswitches = XNEWVEC (struct mdswitchstr, n_mdswitches);
7721 for (start = multilib_defaults; *start != '\0'; start = end + 1)
7723 while (*start == ' ' || *start == '\t')
7729 for (end = start + 1;
7730 *end != ' ' && *end != '\t' && *end != '\0'; end++)
7733 obstack_grow (&multilib_obstack, start, end - start);
7734 obstack_1grow (&multilib_obstack, 0);
7735 mdswitches[i].str = XOBFINISH (&multilib_obstack, const char *);
7736 mdswitches[i++].len = end - start;
7743 p = multilib_exclusions;
7746 /* Ignore newlines. */
7753 /* Check the arguments. */
7760 fatal_error ("multilib exclusions %qs is invalid",
7761 multilib_exclusions);
7771 while (*p != ' ' && *p != ';')
7774 goto invalid_exclusions;
7778 if (*this_arg != '!')
7786 ok = used_arg (this_arg, p - this_arg);
7801 p = multilib_select;
7804 /* Ignore newlines. */
7811 /* Get the initial path. */
7818 fatal_error ("multilib select %qs is invalid",
7823 this_path_len = p - this_path;
7825 /* Check the arguments. */
7832 goto invalid_select;
7841 while (*p != ' ' && *p != ';')
7844 goto invalid_select;
7848 if (*this_arg != '!')
7856 /* If this is a default argument, we can just ignore it.
7857 This is true even if this_arg begins with '!'. Beginning
7858 with '!' does not mean that this argument is necessarily
7859 inappropriate for this library: it merely means that
7860 there is a more specific library which uses this
7861 argument. If this argument is a default, we need not
7862 consider that more specific library. */
7863 ok = used_arg (this_arg, p - this_arg);
7870 if (default_arg (this_arg, p - this_arg))
7879 if (this_path_len != 1
7880 || this_path[0] != '.')
7882 char *new_multilib_dir = XNEWVEC (char, this_path_len + 1);
7885 strncpy (new_multilib_dir, this_path, this_path_len);
7886 new_multilib_dir[this_path_len] = '\0';
7887 q = strchr (new_multilib_dir, ':');
7890 multilib_dir = new_multilib_dir;
7897 const char *q = this_path, *end = this_path + this_path_len;
7899 while (q < end && *q != ':')
7903 char *new_multilib_os_dir = XNEWVEC (char, end - q);
7904 memcpy (new_multilib_os_dir, q + 1, end - q - 1);
7905 new_multilib_os_dir[end - q - 1] = '\0';
7906 multilib_os_dir = new_multilib_os_dir;
7914 if (multilib_dir == NULL && multilib_os_dir != NULL
7915 && strcmp (multilib_os_dir, ".") == 0)
7917 free (CONST_CAST (char *, multilib_os_dir));
7918 multilib_os_dir = NULL;
7920 else if (multilib_dir != NULL && multilib_os_dir == NULL)
7921 multilib_os_dir = multilib_dir;
7924 /* Print out the multiple library subdirectory selection
7925 information. This prints out a series of lines. Each line looks
7926 like SUBDIRECTORY;@OPTION@OPTION, with as many options as is
7927 required. Only the desired options are printed out, the negative
7928 matches. The options are print without a leading dash. There are
7929 no spaces to make it easy to use the information in the shell.
7930 Each subdirectory is printed only once. This assumes the ordering
7931 generated by the genmultilib script. Also, we leave out ones that match
7935 print_multilib_info (void)
7937 const char *p = multilib_select;
7938 const char *last_path = 0, *this_path;
7940 unsigned int last_path_len = 0;
7945 /* Ignore newlines. */
7952 /* Get the initial path. */
7959 fatal_error ("multilib select %qs is invalid", multilib_select);
7965 /* When --disable-multilib was used but target defines
7966 MULTILIB_OSDIRNAMES, entries starting with .: are there just
7967 to find multilib_os_dir, so skip them from output. */
7968 if (this_path[0] == '.' && this_path[1] == ':')
7971 /* Check for matches with the multilib_exclusions. We don't bother
7972 with the '!' in either list. If any of the exclusion rules match
7973 all of its options with the select rule, we skip it. */
7975 const char *e = multilib_exclusions;
7976 const char *this_arg;
7981 /* Ignore newlines. */
7988 /* Check the arguments. */
7997 fatal_error ("multilib exclusion %qs is invalid",
7998 multilib_exclusions);
8009 while (*e != ' ' && *e != ';')
8012 goto invalid_exclusion;
8020 int len = e - this_arg;
8023 goto invalid_select;
8027 while (*q != ' ' && *q != ';')
8030 goto invalid_select;
8034 if (! strncmp (arg, this_arg,
8035 (len < q - arg) ? q - arg : len)
8036 || default_arg (this_arg, e - this_arg))
8066 /* If this is a duplicate, skip it. */
8067 skip = (last_path != 0
8068 && (unsigned int) (p - this_path) == last_path_len
8069 && ! strncmp (last_path, this_path, last_path_len));
8071 last_path = this_path;
8072 last_path_len = p - this_path;
8075 /* If this directory requires any default arguments, we can skip
8076 it. We will already have printed a directory identical to
8077 this one which does not require that default argument. */
8088 goto invalid_select;
8095 while (*q != ' ' && *q != ';')
8098 goto invalid_select;
8103 && default_arg (arg, q - arg))
8118 for (p1 = last_path; p1 < p && *p1 != ':'; p1++)
8129 goto invalid_select;
8137 use_arg = *p != '!';
8142 while (*p != ' ' && *p != ';')
8145 goto invalid_select;
8157 /* If there are extra options, print them now. */
8158 if (multilib_extra && *multilib_extra)
8160 int print_at = TRUE;
8163 for (q = multilib_extra; *q != '\0'; q++)
8184 /* getenv built-in spec function.
8186 Returns the value of the environment variable given by its first
8187 argument, concatenated with the second argument. If the
8188 environment variable is not defined, a fatal error is issued. */
8191 getenv_spec_function (int argc, const char **argv)
8201 value = getenv (argv[0]);
8203 fatal_error ("environment variable %qs not defined", argv[0]);
8205 /* We have to escape every character of the environment variable so
8206 they are not interpreted as active spec characters. A
8207 particularly painful case is when we are reading a variable
8208 holding a windows path complete with \ separators. */
8209 len = strlen (value) * 2 + strlen (argv[1]) + 1;
8210 result = XNEWVAR (char, len);
8211 for (ptr = result; *value; ptr += 2)
8217 strcpy (ptr, argv[1]);
8222 /* if-exists built-in spec function.
8224 Checks to see if the file specified by the absolute pathname in
8225 ARGS exists. Returns that pathname if found.
8227 The usual use for this function is to check for a library file
8228 (whose name has been expanded with %s). */
8231 if_exists_spec_function (int argc, const char **argv)
8233 /* Must have only one argument. */
8234 if (argc == 1 && IS_ABSOLUTE_PATH (argv[0]) && ! access (argv[0], R_OK))
8240 /* if-exists-else built-in spec function.
8242 This is like if-exists, but takes an additional argument which
8243 is returned if the first argument does not exist. */
8246 if_exists_else_spec_function (int argc, const char **argv)
8248 /* Must have exactly two arguments. */
8252 if (IS_ABSOLUTE_PATH (argv[0]) && ! access (argv[0], R_OK))
8258 /* replace-outfile built-in spec function.
8260 This looks for the first argument in the outfiles array's name and
8261 replaces it with the second argument. */
8264 replace_outfile_spec_function (int argc, const char **argv)
8267 /* Must have exactly two arguments. */
8271 for (i = 0; i < n_infiles; i++)
8273 if (outfiles[i] && !strcmp (outfiles[i], argv[0]))
8274 outfiles[i] = xstrdup (argv[1]);
8279 /* remove-outfile built-in spec function.
8281 * This looks for the first argument in the outfiles array's name and
8285 remove_outfile_spec_function (int argc, const char **argv)
8288 /* Must have exactly one argument. */
8292 for (i = 0; i < n_infiles; i++)
8294 if (outfiles[i] && !strcmp (outfiles[i], argv[0]))
8300 /* Given two version numbers, compares the two numbers.
8301 A version number must match the regular expression
8302 ([1-9][0-9]*|0)(\.([1-9][0-9]*|0))*
8305 compare_version_strings (const char *v1, const char *v2)
8310 if (regcomp (&r, "^([1-9][0-9]*|0)(\\.([1-9][0-9]*|0))*$",
8311 REG_EXTENDED | REG_NOSUB) != 0)
8313 rresult = regexec (&r, v1, 0, NULL, 0);
8314 if (rresult == REG_NOMATCH)
8315 fatal_error ("invalid version number %qs", v1);
8316 else if (rresult != 0)
8318 rresult = regexec (&r, v2, 0, NULL, 0);
8319 if (rresult == REG_NOMATCH)
8320 fatal_error ("invalid version number %qs", v2);
8321 else if (rresult != 0)
8324 return strverscmp (v1, v2);
8328 /* version_compare built-in spec function.
8330 This takes an argument of the following form:
8332 <comparison-op> <arg1> [<arg2>] <switch> <result>
8334 and produces "result" if the comparison evaluates to true,
8335 and nothing if it doesn't.
8337 The supported <comparison-op> values are:
8339 >= true if switch is a later (or same) version than arg1
8341 < true if switch is an earlier version than arg1
8343 >< true if switch is arg1 or later, and earlier than arg2
8344 <> true if switch is earlier than arg1 or is arg2 or later
8346 If the switch is not present, the condition is false unless
8347 the first character of the <comparison-op> is '!'.
8350 %:version-compare(>= 10.3 mmacosx-version-min= -lmx)
8351 adds -lmx if -mmacosx-version-min=10.3.9 was passed. */
8354 version_compare_spec_function (int argc, const char **argv)
8358 const char *switch_value = NULL;
8363 fatal_error ("too few arguments to %%:version-compare");
8364 if (argv[0][0] == '\0')
8366 if ((argv[0][1] == '<' || argv[0][1] == '>') && argv[0][0] != '!')
8368 if (argc != nargs + 3)
8369 fatal_error ("too many arguments to %%:version-compare");
8371 switch_len = strlen (argv[nargs + 1]);
8372 for (i = 0; i < n_switches; i++)
8373 if (!strncmp (switches[i].part1, argv[nargs + 1], switch_len)
8374 && check_live_switch (i, switch_len))
8375 switch_value = switches[i].part1 + switch_len;
8377 if (switch_value == NULL)
8381 comp1 = compare_version_strings (switch_value, argv[1]);
8383 comp2 = compare_version_strings (switch_value, argv[2]);
8385 comp2 = -1; /* This value unused. */
8388 switch (argv[0][0] << 8 | argv[0][1])
8390 case '>' << 8 | '=':
8391 result = comp1 >= 0;
8393 case '!' << 8 | '<':
8394 result = comp1 >= 0 || switch_value == NULL;
8399 case '!' << 8 | '>':
8400 result = comp1 < 0 || switch_value == NULL;
8402 case '>' << 8 | '<':
8403 result = comp1 >= 0 && comp2 < 0;
8405 case '<' << 8 | '>':
8406 result = comp1 < 0 || comp2 >= 0;
8410 fatal_error ("unknown operator %qs in %%:version-compare", argv[0]);
8415 return argv[nargs + 2];
8418 /* %:include builtin spec function. This differs from %include in that it
8419 can be nested inside a spec, and thus be conditionalized. It takes
8420 one argument, the filename, and looks for it in the startfile path.
8421 The result is always NULL, i.e. an empty expansion. */
8424 include_spec_function (int argc, const char **argv)
8431 file = find_a_file (&startfile_prefixes, argv[0], R_OK, true);
8432 read_specs (file ? file : argv[0], FALSE);
8437 /* %:find-file spec function. This function replaces its argument by
8438 the file found thru find_file, that is the -print-file-name gcc
8441 find_file_spec_function (int argc, const char **argv)
8448 file = find_file (argv[0]);
8453 /* %:find-plugindir spec function. This function replaces its argument
8454 by the -iplugindir=<dir> option. `dir' is found thru find_file, that
8455 is the -print-file-name gcc program option. */
8457 find_plugindir_spec_function (int argc, const char **argv ATTRIBUTE_UNUSED)
8464 option = concat ("-iplugindir=", find_file ("plugin"), NULL);
8469 /* %:print-asm-header spec function. Print a banner to say that the
8470 following output is from the assembler. */
8473 print_asm_header_spec_function (int arg ATTRIBUTE_UNUSED,
8474 const char **argv ATTRIBUTE_UNUSED)
8476 printf (_("Assembler options\n=================\n\n"));
8477 printf (_("Use \"-Wa,OPTION\" to pass \"OPTION\" to the assembler.\n\n"));
8482 /* Compute a timestamp to initialize flag_random_seed. */
8485 get_local_tick (void)
8489 /* Get some more or less random data. */
8490 #ifdef HAVE_GETTIMEOFDAY
8494 gettimeofday (&tv, NULL);
8495 ret = tv.tv_sec * 1000 + tv.tv_usec / 1000;
8499 time_t now = time (NULL);
8501 if (now != (time_t)-1)
8502 ret = (unsigned) now;
8509 /* %:compare-debug-dump-opt spec function. Save the last argument,
8510 expected to be the last -fdump-final-insns option, or generate a
8514 compare_debug_dump_opt_spec_function (int arg,
8515 const char **argv ATTRIBUTE_UNUSED)
8520 static char random_seed[HOST_BITS_PER_WIDE_INT / 4 + 3];
8523 fatal_error ("too many arguments to %%:compare-debug-dump-opt");
8525 do_spec_2 ("%{fdump-final-insns=*:%*}");
8526 do_spec_1 (" ", 0, NULL);
8528 if (argbuf_index > 0 && strcmp (argv[argbuf_index - 1], "."))
8533 name = xstrdup (argv[argbuf_index - 1]);
8538 const char *ext = NULL;
8540 if (argbuf_index > 0)
8542 do_spec_2 ("%{o*:%*}%{!o:%{!S:%b%O}%{S:%b.s}}");
8545 else if (!compare_debug)
8548 do_spec_2 ("%g.gkd");
8550 do_spec_1 (" ", 0, NULL);
8552 gcc_assert (argbuf_index > 0);
8554 name = concat (argbuf[argbuf_index - 1], ext, NULL);
8556 ret = concat ("-fdump-final-insns=", name, NULL);
8559 which = compare_debug < 0;
8560 debug_check_temp_file[which] = name;
8564 unsigned HOST_WIDE_INT value = get_local_tick () ^ getpid ();
8566 sprintf (random_seed, HOST_WIDE_INT_PRINT_HEX, value);
8570 ret = concat ("%{!frandom-seed=*:-frandom-seed=", random_seed, "} ",
8579 static const char *debug_auxbase_opt;
8581 /* %:compare-debug-self-opt spec function. Expands to the options
8582 that are to be passed in the second compilation of
8586 compare_debug_self_opt_spec_function (int arg,
8587 const char **argv ATTRIBUTE_UNUSED)
8590 fatal_error ("too many arguments to %%:compare-debug-self-opt");
8592 if (compare_debug >= 0)
8595 do_spec_2 ("%{c|S:%{o*:%*}}");
8596 do_spec_1 (" ", 0, NULL);
8598 if (argbuf_index > 0)
8599 debug_auxbase_opt = concat ("-auxbase-strip ",
8600 argbuf[argbuf_index - 1],
8603 debug_auxbase_opt = NULL;
8606 %<o %<MD %<MMD %<MF* %<MG %<MP %<MQ* %<MT* \
8607 %<fdump-final-insns=* -w -S -o %j \
8608 %{!fcompare-debug-second:-fcompare-debug-second} \
8609 ", compare_debug_opt, NULL);
8612 /* %:compare-debug-auxbase-opt spec function. Expands to the auxbase
8613 options that are to be passed in the second compilation of
8614 compare-debug. It expects, as an argument, the basename of the
8615 current input file name, with the .gk suffix appended to it. */
8618 compare_debug_auxbase_opt_spec_function (int arg,
8625 fatal_error ("too few arguments to %%:compare-debug-auxbase-opt");
8628 fatal_error ("too many arguments to %%:compare-debug-auxbase-opt");
8630 if (compare_debug >= 0)
8633 len = strlen (argv[0]);
8634 if (len < 3 || strcmp (argv[0] + len - 3, ".gk") != 0)
8635 fatal_error ("argument to %%:compare-debug-auxbase-opt "
8636 "does not end in .gk");
8638 if (debug_auxbase_opt)
8639 return debug_auxbase_opt;
8641 #define OPT "-auxbase "
8644 name = (char*) xmalloc (sizeof (OPT) + len);
8645 memcpy (name, OPT, sizeof (OPT) - 1);
8646 memcpy (name + sizeof (OPT) - 1, argv[0], len);
8647 name[sizeof (OPT) - 1 + len] = '\0';