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
4 Free Software Foundation, Inc.
6 This file is part of GCC.
8 GCC is free software; you can redistribute it and/or modify it under
9 the terms of the GNU General Public License as published by the Free
10 Software Foundation; either version 3, or (at your option) any later
13 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
14 WARRANTY; without even the implied warranty of MERCHANTABILITY or
15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
18 You should have received a copy of the GNU General Public License
19 along with GCC; see the file COPYING3. If not see
20 <http://www.gnu.org/licenses/>.
22 This paragraph is here to try to keep Sun CC from dying.
23 The number of chars here seems crucial!!!! */
25 /* This program is the user interface to the C compiler and possibly to
26 other compilers. It is used because compilation is a complicated procedure
27 which involves running several programs and passing temporary files between
28 them, forwarding the users switches to those programs selectively,
29 and deleting the temporary files at the end.
31 CC recognizes how to compile each input file by suffixes in the file names.
32 Once it knows which kind of compilation to perform, the procedure for
33 compilation is specified by a string called a "spec". */
35 /* A Short Introduction to Adding a Command-Line Option.
37 Before adding a command-line option, consider if it is really
38 necessary. Each additional command-line option adds complexity and
39 is difficult to remove in subsequent versions.
41 In the following, consider adding the command-line argument
44 1. Each command-line option is specified in the specs file. The
45 notation is described below in the comment entitled "The Specs
48 2. In this file, add an entry to "option_map" equating the long
49 `--' argument version and any shorter, single letter version. Read
50 the comments in the declaration of "struct option_map" for an
51 explanation. Do not omit the first `-'.
53 3. Look in the "specs" file to determine which program or option
54 list should be given the argument, e.g., "cc1_options". Add the
55 appropriate syntax for the shorter option version to the
56 corresponding "const char *" entry in this file. Omit the first
57 `-' from the option. For example, use `-bar', rather than `--bar'.
59 4. If the argument takes an argument, e.g., `--baz argument1',
60 modify either DEFAULT_SWITCH_TAKES_ARG or
61 DEFAULT_WORD_SWITCH_TAKES_ARG in gcc.h. Omit the first `-'
64 5. Document the option in this file's display_help(). If the
65 option is passed to a subprogram, modify its corresponding
66 function, e.g., cppinit.c:print_help() or toplev.c:display_help(),
69 6. Compile and test. Make sure that your new specs file is being
70 read. For example, use a debugger to investigate the value of
71 "specs_file" in main(). */
75 #include "coretypes.h"
76 #include "multilib.h" /* before tm.h */
79 #if ! defined( SIGCHLD ) && defined( SIGCLD )
80 # define SIGCHLD SIGCLD
90 /* By default there is no special suffix for target executables. */
91 /* FIXME: when autoconf is fixed, remove the host check - dj */
92 #if defined(TARGET_EXECUTABLE_SUFFIX) && defined(HOST_EXECUTABLE_SUFFIX)
93 #define HAVE_TARGET_EXECUTABLE_SUFFIX
96 /* By default there is no special suffix for host executables. */
97 #ifdef HOST_EXECUTABLE_SUFFIX
98 #define HAVE_HOST_EXECUTABLE_SUFFIX
100 #define HOST_EXECUTABLE_SUFFIX ""
103 /* By default, the suffix for target object files is ".o". */
104 #ifdef TARGET_OBJECT_SUFFIX
105 #define HAVE_TARGET_OBJECT_SUFFIX
107 #define TARGET_OBJECT_SUFFIX ".o"
110 static const char dir_separator_str[] = { DIR_SEPARATOR, 0 };
112 /* Most every one is fine with LIBRARY_PATH. For some, it conflicts. */
113 #ifndef LIBRARY_PATH_ENV
114 #define LIBRARY_PATH_ENV "LIBRARY_PATH"
118 #define kill(p,s) raise(s)
121 /* If a stage of compilation returns an exit status >= 1,
122 compilation of that file ceases. */
124 #define MIN_FATAL_STATUS 1
126 /* Flag set by cppspec.c to 1. */
129 /* Flag set to nonzero if an @file argument has been supplied to gcc. */
130 static bool at_file_supplied;
132 /* Flag saying to pass the greatest exit code returned by a sub-process
133 to the calling program. */
134 static int pass_exit_codes;
136 /* Definition of string containing the arguments given to configure. */
137 #include "configargs.h"
139 /* Flag saying to print the directories gcc will search through looking for
140 programs, libraries, etc. */
142 static int print_search_dirs;
144 /* Flag saying to print the full filename of this file
145 as found through our usual search mechanism. */
147 static const char *print_file_name = NULL;
149 /* As print_file_name, but search for executable file. */
151 static const char *print_prog_name = NULL;
153 /* Flag saying to print the relative path we'd use to
154 find libgcc.a given the current compiler flags. */
156 static int print_multi_directory;
158 /* Flag saying to print the relative path we'd use to
159 find OS libraries given the current compiler flags. */
161 static int print_multi_os_directory;
163 /* Flag saying to print the list of subdirectories and
164 compiler flags used to select them in a standard form. */
166 static int print_multi_lib;
168 /* Flag saying to print the command line options understood by gcc and its
171 static int print_help_list;
173 /* Flag saying to print the sysroot suffix used for searching for
176 static int print_sysroot_headers_suffix;
178 /* Flag indicating whether we should print the command and arguments */
180 static int verbose_flag;
182 /* Flag indicating whether we should ONLY print the command and
183 arguments (like verbose_flag) without executing the command.
184 Displayed arguments are quoted so that the generated command
185 line is suitable for execution. This is intended for use in
186 shell scripts to capture the driver-generated command line. */
187 static int verbose_only_flag;
189 /* Flag indicating how to print command line options of sub-processes. */
191 static int print_subprocess_help;
193 /* Flag indicating whether we should report subprocess execution times
194 (if this is supported by the system - see pexecute.c). */
196 static int report_times;
198 /* Nonzero means place this string before uses of /, so that include
199 and library files can be found in an alternate location. */
201 #ifdef TARGET_SYSTEM_ROOT
202 static const char *target_system_root = TARGET_SYSTEM_ROOT;
204 static const char *target_system_root = 0;
207 /* Nonzero means pass the updated target_system_root to the compiler. */
209 static int target_system_root_changed;
211 /* Nonzero means append this string to target_system_root. */
213 static const char *target_sysroot_suffix = 0;
215 /* Nonzero means append this string to target_system_root for headers. */
217 static const char *target_sysroot_hdrs_suffix = 0;
219 /* Nonzero means write "temp" files in source directory
220 and use the source file's name in them, and don't delete them. */
222 static int save_temps_flag;
224 /* Nonzero means pass multiple source files to the compiler at one time. */
226 static int combine_flag = 0;
228 /* Nonzero means use pipes to communicate between subprocesses.
229 Overridden by either of the above two flags. */
231 static int use_pipes;
233 /* The compiler version. */
235 static const char *compiler_version;
237 /* The target version specified with -V */
239 static const char *const spec_version = DEFAULT_TARGET_VERSION;
241 /* The target machine specified with -b. */
243 static const char *spec_machine = DEFAULT_TARGET_MACHINE;
245 /* Nonzero if cross-compiling.
246 When -b is used, the value comes from the `specs' file. */
248 #ifdef CROSS_DIRECTORY_STRUCTURE
249 static const char *cross_compile = "1";
251 static const char *cross_compile = "0";
254 #ifdef MODIFY_TARGET_NAME
256 /* Information on how to alter the target name based on a command-line
257 switch. The only case we support now is simply appending or deleting a
258 string to or from the end of the first part of the configuration name. */
260 static const struct modify_target
262 const char *const sw;
263 const enum add_del {ADD, DELETE} add_del;
264 const char *const str;
266 modify_target[] = MODIFY_TARGET_NAME;
269 /* The number of errors that have occurred; the link phase will not be
270 run if this is nonzero. */
271 static int error_count = 0;
273 /* Greatest exit code of sub-processes that has been encountered up to
275 static int greatest_status = 1;
277 /* This is the obstack which we use to allocate many strings. */
279 static struct obstack obstack;
281 /* This is the obstack to build an environment variable to pass to
282 collect2 that describes all of the relevant switches of what to
283 pass the compiler in building the list of pointers to constructors
286 static struct obstack collect_obstack;
288 /* Forward declaration for prototypes. */
292 static void init_spec (void);
293 static void store_arg (const char *, int, int);
294 static char *load_specs (const char *);
295 static void read_specs (const char *, int);
296 static void set_spec (const char *, const char *);
297 static struct compiler *lookup_compiler (const char *, size_t, const char *);
298 static char *build_search_list (const struct path_prefix *, const char *,
300 static void putenv_from_prefixes (const struct path_prefix *, const char *,
302 static int access_check (const char *, int);
303 static char *find_a_file (const struct path_prefix *, const char *, int, bool);
304 static void add_prefix (struct path_prefix *, const char *, const char *,
306 static void add_sysrooted_prefix (struct path_prefix *, const char *,
307 const char *, int, int, int);
308 static void translate_options (int *, const char *const **);
309 static char *skip_whitespace (char *);
310 static void delete_if_ordinary (const char *);
311 static void delete_temp_files (void);
312 static void delete_failure_queue (void);
313 static void clear_failure_queue (void);
314 static int check_live_switch (int, int);
315 static const char *handle_braces (const char *);
316 static inline bool input_suffix_matches (const char *, const char *);
317 static inline bool switch_matches (const char *, const char *, int);
318 static inline void mark_matching_switches (const char *, const char *, int);
319 static inline void process_marked_switches (void);
320 static const char *process_brace_body (const char *, const char *, const char *, int, int);
321 static const struct spec_function *lookup_spec_function (const char *);
322 static const char *eval_spec_function (const char *, const char *);
323 static const char *handle_spec_function (const char *);
324 static char *save_string (const char *, int);
325 static void set_collect_gcc_options (void);
326 static int do_spec_1 (const char *, int, const char *);
327 static int do_spec_2 (const char *);
328 static void do_option_spec (const char *, const char *);
329 static void do_self_spec (const char *);
330 static const char *find_file (const char *);
331 static int is_directory (const char *, bool);
332 static const char *validate_switches (const char *);
333 static void validate_all_switches (void);
334 static inline void validate_switches_from_spec (const char *);
335 static void give_switch (int, int);
336 static int used_arg (const char *, int);
337 static int default_arg (const char *, int);
338 static void set_multilib_dir (void);
339 static void print_multilib_info (void);
340 static void perror_with_name (const char *);
341 static void fatal_ice (const char *, ...) ATTRIBUTE_PRINTF_1 ATTRIBUTE_NORETURN;
342 static void notice (const char *, ...) ATTRIBUTE_PRINTF_1;
343 static void display_help (void);
344 static void add_preprocessor_option (const char *, int);
345 static void add_assembler_option (const char *, int);
346 static void add_linker_option (const char *, int);
347 static void process_command (int, const char **);
348 static int execute (void);
349 static void alloc_args (void);
350 static void clear_args (void);
351 static void fatal_error (int);
352 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
353 static void init_gcc_specs (struct obstack *, const char *, const char *,
356 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
357 static const char *convert_filename (const char *, int, int);
360 static const char *getenv_spec_function (int, const char **);
361 static const char *if_exists_spec_function (int, const char **);
362 static const char *if_exists_else_spec_function (int, const char **);
363 static const char *replace_outfile_spec_function (int, const char **);
364 static const char *version_compare_spec_function (int, const char **);
365 static const char *include_spec_function (int, const char **);
366 static const char *print_asm_header_spec_function (int, const char **);
368 /* The Specs Language
370 Specs are strings containing lines, each of which (if not blank)
371 is made up of a program name, and arguments separated by spaces.
372 The program name must be exact and start from root, since no path
373 is searched and it is unreliable to depend on the current working directory.
374 Redirection of input or output is not supported; the subprograms must
375 accept filenames saying what files to read and write.
377 In addition, the specs can contain %-sequences to substitute variable text
378 or for conditional text. Here is a table of all defined %-sequences.
379 Note that spaces are not generated automatically around the results of
380 expanding these sequences; therefore, you can concatenate them together
381 or with constant text in a single argument.
383 %% substitute one % into the program name or argument.
384 %i substitute the name of the input file being processed.
385 %b substitute the basename of the input file being processed.
386 This is the substring up to (and not including) the last period
387 and not including the directory.
388 %B same as %b, but include the file suffix (text after the last period).
390 substitute a file name that has suffix SUFFIX and is chosen
391 once per compilation, and mark the argument a la %d. To reduce
392 exposure to denial-of-service attacks, the file name is now
393 chosen in a way that is hard to predict even when previously
394 chosen file names are known. For example, `%g.s ... %g.o ... %g.s'
395 might turn into `ccUVUUAU.s ccXYAXZ12.o ccUVUUAU.s'. SUFFIX matches
396 the regexp "[.0-9A-Za-z]*%O"; "%O" is treated exactly as if it
397 had been pre-processed. Previously, %g was simply substituted
398 with a file name chosen once per compilation, without regard
399 to any appended suffix (which was therefore treated just like
400 ordinary text), making such attacks more likely to succeed.
402 like %g, but if -pipe is in effect, expands simply to "-".
404 like %g, but if -pipe is in effect, expands to nothing. (We have both
405 %| and %m to accommodate differences between system assemblers; see
406 the AS_NEEDS_DASH_FOR_PIPED_INPUT target macro.)
408 like %g, but generates a new temporary file name even if %uSUFFIX
411 substitutes the last file name generated with %uSUFFIX, generating a
412 new one if there is no such last file name. In the absence of any
413 %uSUFFIX, this is just like %gSUFFIX, except they don't share
414 the same suffix "space", so `%g.s ... %U.s ... %g.s ... %U.s'
415 would involve the generation of two distinct file names, one
416 for each `%g.s' and another for each `%U.s'. Previously, %U was
417 simply substituted with a file name chosen for the previous %u,
418 without regard to any appended suffix.
420 substitutes the name of the HOST_BIT_BUCKET, if any, and if it is
421 writable, and if save-temps is off; otherwise, substitute the name
422 of a temporary file, just like %u. This temporary file is not
423 meant for communication between processes, but rather as a junk
426 substitutes .SUFFIX for the suffixes of a matched switch's args when
427 it is subsequently output with %*. SUFFIX is terminated by the next
429 %d marks the argument containing or following the %d as a
430 temporary file name, so that that file will be deleted if CC exits
431 successfully. Unlike %g, this contributes no text to the argument.
432 %w marks the argument containing or following the %w as the
433 "output file" of this compilation. This puts the argument
434 into the sequence of arguments that %o will substitute later.
435 %V indicates that this compilation produces no "output file".
437 like %{...} but mark last argument supplied within
438 as a file to be deleted on failure.
439 %o substitutes the names of all the output files, with spaces
440 automatically placed around them. You should write spaces
441 around the %o as well or the results are undefined.
442 %o is for use in the specs for running the linker.
443 Input files whose names have no recognized suffix are not compiled
444 at all, but they are included among the output files, so they will
446 %O substitutes the suffix for object files. Note that this is
447 handled specially when it immediately follows %g, %u, or %U
448 (with or without a suffix argument) because of the need for
449 those to form complete file names. The handling is such that
450 %O is treated exactly as if it had already been substituted,
451 except that %g, %u, and %U do not currently support additional
452 SUFFIX characters following %O as they would following, for
454 %I Substitute any of -iprefix (made from GCC_EXEC_PREFIX), -isysroot
455 (made from TARGET_SYSTEM_ROOT), -isystem (made from COMPILER_PATH
456 and -B options) and -imultilib as necessary.
457 %s current argument is the name of a library or startup file of some sort.
458 Search for that file in a standard list of directories
459 and substitute the full name found.
460 %eSTR Print STR as an error message. STR is terminated by a newline.
461 Use this when inconsistent options are detected.
462 %nSTR Print STR as a notice. STR is terminated by a newline.
463 %x{OPTION} Accumulate an option for %X.
464 %X Output the accumulated linker options specified by compilations.
465 %Y Output the accumulated assembler options specified by compilations.
466 %Z Output the accumulated preprocessor options specified by compilations.
467 %a process ASM_SPEC as a spec.
468 This allows config.h to specify part of the spec for running as.
469 %A process ASM_FINAL_SPEC as a spec. A capital A is actually
470 used here. This can be used to run a post-processor after the
471 assembler has done its job.
472 %D Dump out a -L option for each directory in startfile_prefixes.
473 If multilib_dir is set, extra entries are generated with it affixed.
474 %l process LINK_SPEC as a spec.
475 %L process LIB_SPEC as a spec.
476 %G process LIBGCC_SPEC as a spec.
477 %R Output the concatenation of target_system_root and
478 target_sysroot_suffix.
479 %S process STARTFILE_SPEC as a spec. A capital S is actually used here.
480 %E process ENDFILE_SPEC as a spec. A capital E is actually used here.
481 %C process CPP_SPEC as a spec.
482 %1 process CC1_SPEC as a spec.
483 %2 process CC1PLUS_SPEC as a spec.
484 %* substitute the variable part of a matched option. (See below.)
485 Note that each comma in the substituted string is replaced by
487 %<S remove all occurrences of -S from the command line.
488 Note - this command is position dependent. % commands in the
489 spec string before this one will see -S, % commands in the
490 spec string after this one will not.
491 %<S* remove all occurrences of all switches beginning with -S from the
494 Call the named function FUNCTION, passing it ARGS. ARGS is
495 first processed as a nested spec string, then split into an
496 argument vector in the usual fashion. The function returns
497 a string which is processed as if it had appeared literally
498 as part of the current spec.
499 %{S} substitutes the -S switch, if that switch was given to CC.
500 If that switch was not specified, this substitutes nothing.
501 Here S is a metasyntactic variable.
502 %{S*} substitutes all the switches specified to CC whose names start
503 with -S. This is used for -o, -I, etc; switches that take
504 arguments. CC considers `-o foo' as being one switch whose
505 name starts with `o'. %{o*} would substitute this text,
506 including the space; thus, two arguments would be generated.
507 %{S*&T*} likewise, but preserve order of S and T options (the order
508 of S and T in the spec is not significant). Can be any number
509 of ampersand-separated variables; for each the wild card is
510 optional. Useful for CPP as %{D*&U*&A*}.
512 %{S:X} substitutes X, if the -S switch was given to CC.
513 %{!S:X} substitutes X, if the -S switch was NOT given to CC.
514 %{S*:X} substitutes X if one or more switches whose names start
515 with -S was given to CC. Normally X is substituted only
516 once, no matter how many such switches appeared. However,
517 if %* appears somewhere in X, then X will be substituted
518 once for each matching switch, with the %* replaced by the
519 part of that switch that matched the '*'.
520 %{.S:X} substitutes X, if processing a file with suffix S.
521 %{!.S:X} substitutes X, if NOT processing a file with suffix S.
522 %{,S:X} substitutes X, if processing a file which will use spec S.
523 %{!,S:X} substitutes X, if NOT processing a file which will use spec S.
525 %{S|T:X} substitutes X if either -S or -T was given to CC. This may be
526 combined with '!', '.', ',', and '*' as above binding stronger
528 If %* appears in X, all of the alternatives must be starred, and
529 only the first matching alternative is substituted.
530 %{S:X; if S was given to CC, substitutes X;
531 T:Y; else if T was given to CC, substitutes Y;
532 :D} else substitutes D. There can be as many clauses as you need.
533 This may be combined with '.', '!', ',', '|', and '*' as above.
535 %(Spec) processes a specification defined in a specs file as *Spec:
536 %[Spec] as above, but put __ around -D arguments
538 The conditional text X in a %{S:X} or similar construct may contain
539 other nested % constructs or spaces, or even newlines. They are
540 processed as usual, as described above. Trailing white space in X is
541 ignored. White space may also appear anywhere on the left side of the
542 colon in these constructs, except between . or * and the corresponding
545 The -O, -f, -m, and -W switches are handled specifically in these
546 constructs. If another value of -O or the negated form of a -f, -m, or
547 -W switch is found later in the command line, the earlier switch
548 value is ignored, except with {S*} where S is just one letter; this
549 passes all matching options.
551 The character | at the beginning of the predicate text is used to indicate
552 that a command should be piped to the following command, but only if -pipe
555 Note that it is built into CC which switches take arguments and which
556 do not. You might think it would be useful to generalize this to
557 allow each compiler's spec to say which switches take arguments. But
558 this cannot be done in a consistent fashion. CC cannot even decide
559 which input files have been specified without knowing which switches
560 take arguments, and it must know which input files to compile in order
561 to tell which compilers to run.
563 CC also knows implicitly that arguments starting in `-l' are to be
564 treated as compiler output files, and passed to the linker in their
565 proper position among the other output files. */
567 /* Define the macros used for specs %a, %l, %L, %S, %C, %1. */
569 /* config.h can define ASM_SPEC to provide extra args to the assembler
570 or extra switch-translations. */
575 /* config.h can define ASM_FINAL_SPEC to run a post processor after
576 the assembler has run. */
577 #ifndef ASM_FINAL_SPEC
578 #define ASM_FINAL_SPEC ""
581 /* config.h can define CPP_SPEC to provide extra args to the C preprocessor
582 or extra switch-translations. */
587 /* config.h can define CC1_SPEC to provide extra args to cc1 and cc1plus
588 or extra switch-translations. */
593 /* config.h can define CC1PLUS_SPEC to provide extra args to cc1plus
594 or extra switch-translations. */
596 #define CC1PLUS_SPEC ""
599 /* config.h can define LINK_SPEC to provide extra args to the linker
600 or extra switch-translations. */
605 /* config.h can define LIB_SPEC to override the default libraries. */
607 #define LIB_SPEC "%{!shared:%{g*:-lg} %{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p}}"
612 /* XXX: valid only for GNU ld */
613 /* XXX: should exactly match hooks provided by libmudflap.a */
614 #define MFWRAP_SPEC " %{static: %{fmudflap|fmudflapth: \
615 --wrap=malloc --wrap=free --wrap=calloc --wrap=realloc\
616 --wrap=mmap --wrap=munmap --wrap=alloca\
617 } %{fmudflapth: --wrap=pthread_create\
618 }} %{fmudflap|fmudflapth: --wrap=main}"
621 #define MFLIB_SPEC "%{fmudflap|fmudflapth: -export-dynamic}"
624 /* config.h can define LIBGCC_SPEC to override how and when libgcc.a is
627 #if defined(REAL_LIBGCC_SPEC)
628 #define LIBGCC_SPEC REAL_LIBGCC_SPEC
629 #elif defined(LINK_LIBGCC_SPECIAL_1)
630 /* Have gcc do the search for libgcc.a. */
631 #define LIBGCC_SPEC "libgcc.a%s"
633 #define LIBGCC_SPEC "-lgcc"
637 /* config.h can define STARTFILE_SPEC to override the default crt0 files. */
638 #ifndef STARTFILE_SPEC
639 #define STARTFILE_SPEC \
640 "%{!shared:%{pg:gcrt0%O%s}%{!pg:%{p:mcrt0%O%s}%{!p:crt0%O%s}}}"
643 /* config.h can define SWITCHES_NEED_SPACES to control which options
644 require spaces between the option and the argument. */
645 #ifndef SWITCHES_NEED_SPACES
646 #define SWITCHES_NEED_SPACES ""
649 /* config.h can define ENDFILE_SPEC to override the default crtn files. */
651 #define ENDFILE_SPEC ""
655 #define LINKER_NAME "collect2"
658 /* Define ASM_DEBUG_SPEC to be a spec suitable for translating '-g'
660 #ifndef ASM_DEBUG_SPEC
661 # if defined(DBX_DEBUGGING_INFO) && defined(DWARF2_DEBUGGING_INFO) \
662 && defined(HAVE_AS_GDWARF2_DEBUG_FLAG) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
663 # define ASM_DEBUG_SPEC \
664 (PREFERRED_DEBUGGING_TYPE == DBX_DEBUG \
665 ? "%{gdwarf-2*:--gdwarf2}%{!gdwarf-2*:%{g*:--gstabs}}" \
666 : "%{gstabs*:--gstabs}%{!gstabs*:%{g*:--gdwarf2}}")
668 # if defined(DBX_DEBUGGING_INFO) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
669 # define ASM_DEBUG_SPEC "%{g*:--gstabs}"
671 # if defined(DWARF2_DEBUGGING_INFO) && defined(HAVE_AS_GDWARF2_DEBUG_FLAG)
672 # define ASM_DEBUG_SPEC "%{g*:--gdwarf2}"
676 #ifndef ASM_DEBUG_SPEC
677 # define ASM_DEBUG_SPEC ""
680 /* Here is the spec for running the linker, after compiling all files. */
682 /* This is overridable by the target in case they need to specify the
683 -lgcc and -lc order specially, yet not require them to override all
684 of LINK_COMMAND_SPEC. */
685 #ifndef LINK_GCC_C_SEQUENCE_SPEC
686 #define LINK_GCC_C_SEQUENCE_SPEC "%G %L %G"
689 #ifndef LINK_SSP_SPEC
690 #ifdef TARGET_LIBC_PROVIDES_SSP
691 #define LINK_SSP_SPEC "%{fstack-protector:}"
693 #define LINK_SSP_SPEC "%{fstack-protector|fstack-protector-all:-lssp_nonshared -lssp}"
697 #ifndef LINK_PIE_SPEC
699 #define LINK_PIE_SPEC "%{pie:-pie} "
701 #define LINK_PIE_SPEC "%{pie:} "
705 /* -u* was put back because both BSD and SysV seem to support it. */
706 /* %{static:} simply prevents an error message if the target machine
707 doesn't handle -static. */
708 /* We want %{T*} after %{L*} and %D so that it can be used to specify linker
709 scripts which exist in user specified directories, or in standard
711 #ifndef LINK_COMMAND_SPEC
712 #define LINK_COMMAND_SPEC "\
713 %{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:\
714 %(linker) %l " LINK_PIE_SPEC "%X %{o*} %{A} %{d} %{e*} %{m} %{N} %{n} %{r}\
715 %{s} %{t} %{u*} %{x} %{z} %{Z} %{!A:%{!nostdlib:%{!nostartfiles:%S}}}\
716 %{static:} %{L*} %(mfwrap) %(link_libgcc) %o\
717 %{fopenmp:%:include(libgomp.spec)%(link_gomp)} %(mflib)\
718 %{fprofile-arcs|fprofile-generate|coverage:-lgcov}\
719 %{!nostdlib:%{!nodefaultlibs:%(link_ssp) %(link_gcc_c_sequence)}}\
720 %{!A:%{!nostdlib:%{!nostartfiles:%E}}} %{T*} }}}}}}"
723 #ifndef LINK_LIBGCC_SPEC
724 /* Generate -L options for startfile prefix list. */
725 # define LINK_LIBGCC_SPEC "%D"
728 #ifndef STARTFILE_PREFIX_SPEC
729 # define STARTFILE_PREFIX_SPEC ""
733 # define SYSROOT_SPEC "--sysroot=%R"
736 #ifndef SYSROOT_SUFFIX_SPEC
737 # define SYSROOT_SUFFIX_SPEC ""
740 #ifndef SYSROOT_HEADERS_SUFFIX_SPEC
741 # define SYSROOT_HEADERS_SUFFIX_SPEC ""
744 static const char *asm_debug;
745 static const char *cpp_spec = CPP_SPEC;
746 static const char *cc1_spec = CC1_SPEC;
747 static const char *cc1plus_spec = CC1PLUS_SPEC;
748 static const char *link_gcc_c_sequence_spec = LINK_GCC_C_SEQUENCE_SPEC;
749 static const char *link_ssp_spec = LINK_SSP_SPEC;
750 static const char *asm_spec = ASM_SPEC;
751 static const char *asm_final_spec = ASM_FINAL_SPEC;
752 static const char *link_spec = LINK_SPEC;
753 static const char *lib_spec = LIB_SPEC;
754 static const char *mfwrap_spec = MFWRAP_SPEC;
755 static const char *mflib_spec = MFLIB_SPEC;
756 static const char *link_gomp_spec = "";
757 static const char *libgcc_spec = LIBGCC_SPEC;
758 static const char *endfile_spec = ENDFILE_SPEC;
759 static const char *startfile_spec = STARTFILE_SPEC;
760 static const char *switches_need_spaces = SWITCHES_NEED_SPACES;
761 static const char *linker_name_spec = LINKER_NAME;
762 static const char *link_command_spec = LINK_COMMAND_SPEC;
763 static const char *link_libgcc_spec = LINK_LIBGCC_SPEC;
764 static const char *startfile_prefix_spec = STARTFILE_PREFIX_SPEC;
765 static const char *sysroot_spec = SYSROOT_SPEC;
766 static const char *sysroot_suffix_spec = SYSROOT_SUFFIX_SPEC;
767 static const char *sysroot_hdrs_suffix_spec = SYSROOT_HEADERS_SUFFIX_SPEC;
769 /* Standard options to cpp, cc1, and as, to reduce duplication in specs.
770 There should be no need to override these in target dependent files,
771 but we need to copy them to the specs file so that newer versions
772 of the GCC driver can correctly drive older tool chains with the
773 appropriate -B options. */
775 /* When cpplib handles traditional preprocessing, get rid of this, and
776 call cc1 (or cc1obj in objc/lang-specs.h) from the main specs so
777 that we default the front end language better. */
778 static const char *trad_capable_cpp =
779 "cc1 -E %{traditional|ftraditional|traditional-cpp:-traditional-cpp}";
781 /* We don't wrap .d files in %W{} since a missing .d file, and
782 therefore no dependency entry, confuses make into thinking a .o
783 file that happens to exist is up-to-date. */
784 static const char *cpp_unique_options =
785 "%{C|CC:%{!E:%eGCC does not support -C or -CC without -E}}\
786 %{!Q:-quiet} %{nostdinc*} %{C} %{CC} %{v} %{I*&F*} %{P} %I\
787 %{MD:-MD %{!o:%b.d}%{o*:%.d%*}}\
788 %{MMD:-MMD %{!o:%b.d}%{o*:%.d%*}}\
789 %{M} %{MM} %{MF*} %{MG} %{MP} %{MQ*} %{MT*}\
790 %{!E:%{!M:%{!MM:%{!MT:%{!MQ:%{MD|MMD:%{o*:-MQ %*}}}}}}}\
791 %{remap} %{g3|ggdb3|gstabs3|gcoff3|gxcoff3|gvms3:-dD}\
792 %{H} %C %{D*&U*&A*} %{i*} %Z %i\
793 %{fmudflap:-D_MUDFLAP -include mf-runtime.h}\
794 %{fmudflapth:-D_MUDFLAP -D_MUDFLAPTH -include mf-runtime.h}\
797 /* This contains cpp options which are common with cc1_options and are passed
798 only when preprocessing only to avoid duplication. We pass the cc1 spec
799 options to the preprocessor so that it the cc1 spec may manipulate
800 options used to set target flags. Those special target flags settings may
801 in turn cause preprocessor symbols to be defined specially. */
802 static const char *cpp_options =
803 "%(cpp_unique_options) %1 %{m*} %{std*&ansi&trigraphs} %{W*&pedantic*} %{w}\
804 %{f*} %{g*:%{!g0:%{!fno-working-directory:-fworking-directory}}} %{O*}\
805 %{undef} %{save-temps:-fpch-preprocess}";
807 /* This contains cpp options which are not passed when the preprocessor
808 output will be used by another program. */
809 static const char *cpp_debug_options = "%{d*}";
811 /* NB: This is shared amongst all front-ends. */
812 static const char *cc1_options =
813 "%{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\
814 %1 %{!Q:-quiet} -dumpbase %B %{d*} %{m*} %{a*}\
815 %{c|S:%{o*:-auxbase-strip %*}%{!o*:-auxbase %b}}%{!c:%{!S:-auxbase %b}}\
816 %{g*} %{O*} %{W*&pedantic*} %{w} %{std*&ansi&trigraphs}\
817 %{v:-version} %{pg:-p} %{p} %{f*} %{undef}\
818 %{Qn:-fno-ident} %{--help:--help}\
819 %{--target-help:--target-help}\
820 %{--help=*:--help=%(VALUE)}\
821 %{!fsyntax-only:%{S:%W{o*}%{!o*:-o %b.s}}}\
822 %{fsyntax-only:-o %j} %{-param*}\
823 %{fmudflap|fmudflapth:-fno-builtin -fno-merge-constants}\
824 %{coverage:-fprofile-arcs -ftest-coverage}";
826 static const char *asm_options =
827 "%{--target-help:%:print-asm-header()} "
829 /* If GNU AS is used, then convert -w (no warnings), -I, and -v
830 to the assembler equivalents. */
831 "%{v} %{w:-W} %{I*} "
833 "%a %Y %{c:%W{o*}%{!o*:-o %w%b%O}}%{!c:-o %d%w%u%O}";
835 static const char *invoke_as =
836 #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT
837 "%{!S:-o %|.s |\n as %(asm_options) %|.s %A }";
839 "%{!S:-o %|.s |\n as %(asm_options) %m.s %A }";
842 /* Some compilers have limits on line lengths, and the multilib_select
843 and/or multilib_matches strings can be very long, so we build them at
845 static struct obstack multilib_obstack;
846 static const char *multilib_select;
847 static const char *multilib_matches;
848 static const char *multilib_defaults;
849 static const char *multilib_exclusions;
851 /* Check whether a particular argument is a default argument. */
853 #ifndef MULTILIB_DEFAULTS
854 #define MULTILIB_DEFAULTS { "" }
857 static const char *const multilib_defaults_raw[] = MULTILIB_DEFAULTS;
859 #ifndef DRIVER_SELF_SPECS
860 #define DRIVER_SELF_SPECS ""
863 /* Adding -fopenmp should imply pthreads. This is particularly important
864 for targets that use different start files and suchlike. */
865 #ifndef GOMP_SELF_SPECS
866 #define GOMP_SELF_SPECS "%{fopenmp: -pthread}"
869 static const char *const driver_self_specs[] = {
870 DRIVER_SELF_SPECS, GOMP_SELF_SPECS
873 #ifndef OPTION_DEFAULT_SPECS
874 #define OPTION_DEFAULT_SPECS { "", "" }
883 static const struct default_spec
884 option_default_specs[] = { OPTION_DEFAULT_SPECS };
888 struct user_specs *next;
889 const char *filename;
892 static struct user_specs *user_specs_head, *user_specs_tail;
894 #ifndef SWITCH_TAKES_ARG
895 #define SWITCH_TAKES_ARG(CHAR) DEFAULT_SWITCH_TAKES_ARG(CHAR)
898 #ifndef WORD_SWITCH_TAKES_ARG
899 #define WORD_SWITCH_TAKES_ARG(STR) DEFAULT_WORD_SWITCH_TAKES_ARG (STR)
902 #ifdef HAVE_TARGET_EXECUTABLE_SUFFIX
903 /* This defines which switches stop a full compilation. */
904 #define DEFAULT_SWITCH_CURTAILS_COMPILATION(CHAR) \
905 ((CHAR) == 'c' || (CHAR) == 'S')
907 #ifndef SWITCH_CURTAILS_COMPILATION
908 #define SWITCH_CURTAILS_COMPILATION(CHAR) \
909 DEFAULT_SWITCH_CURTAILS_COMPILATION(CHAR)
913 /* Record the mapping from file suffixes for compilation specs. */
917 const char *suffix; /* Use this compiler for input files
918 whose names end in this suffix. */
920 const char *spec; /* To use this compiler, run this spec. */
922 const char *cpp_spec; /* If non-NULL, substitute this spec
923 for `%C', rather than the usual
925 const int combinable; /* If nonzero, compiler can deal with
926 multiple source files at once (IMA). */
927 const int needs_preprocessing; /* If nonzero, source files need to
928 be run through a preprocessor. */
931 /* Pointer to a vector of `struct compiler' that gives the spec for
932 compiling a file, based on its suffix.
933 A file that does not end in any of these suffixes will be passed
934 unchanged to the loader and nothing else will be done to it.
936 An entry containing two 0s is used to terminate the vector.
938 If multiple entries match a file, the last matching one is used. */
940 static struct compiler *compilers;
942 /* Number of entries in `compilers', not counting the null terminator. */
944 static int n_compilers;
946 /* The default list of file name suffixes and their compilation specs. */
948 static const struct compiler default_compilers[] =
950 /* Add lists of suffixes of known languages here. If those languages
951 were not present when we built the driver, we will hit these copies
952 and be given a more meaningful error than "file not used since
953 linking is not done". */
954 {".m", "#Objective-C", 0, 0, 0}, {".mi", "#Objective-C", 0, 0, 0},
955 {".mm", "#Objective-C++", 0, 0, 0}, {".M", "#Objective-C++", 0, 0, 0},
956 {".mii", "#Objective-C++", 0, 0, 0},
957 {".cc", "#C++", 0, 0, 0}, {".cxx", "#C++", 0, 0, 0},
958 {".cpp", "#C++", 0, 0, 0}, {".cp", "#C++", 0, 0, 0},
959 {".c++", "#C++", 0, 0, 0}, {".C", "#C++", 0, 0, 0},
960 {".CPP", "#C++", 0, 0, 0}, {".ii", "#C++", 0, 0, 0},
961 {".ads", "#Ada", 0, 0, 0}, {".adb", "#Ada", 0, 0, 0},
962 {".f", "#Fortran", 0, 0, 0}, {".for", "#Fortran", 0, 0, 0},
963 {".fpp", "#Fortran", 0, 0, 0}, {".F", "#Fortran", 0, 0, 0},
964 {".FOR", "#Fortran", 0, 0, 0}, {".FPP", "#Fortran", 0, 0, 0},
965 {".f90", "#Fortran", 0, 0, 0}, {".f95", "#Fortran", 0, 0, 0},
966 {".F90", "#Fortran", 0, 0, 0}, {".F95", "#Fortran", 0, 0, 0},
967 {".r", "#Ratfor", 0, 0, 0},
968 {".p", "#Pascal", 0, 0, 0}, {".pas", "#Pascal", 0, 0, 0},
969 {".java", "#Java", 0, 0, 0}, {".class", "#Java", 0, 0, 0},
970 {".zip", "#Java", 0, 0, 0}, {".jar", "#Java", 0, 0, 0},
971 /* Next come the entries for C. */
972 {".c", "@c", 0, 1, 1},
974 /* cc1 has an integrated ISO C preprocessor. We should invoke the
975 external preprocessor if -save-temps is given. */
976 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\
978 %{traditional|ftraditional:\
979 %eGNU C no longer supports -traditional without -E}\
981 %{save-temps|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
982 %(cpp_options) -o %{save-temps:%b.i} %{!save-temps:%g.i} \n\
983 cc1 -fpreprocessed %{save-temps:%b.i} %{!save-temps:%g.i} \
985 %{!save-temps:%{!traditional-cpp:%{!no-integrated-cpp:\
986 cc1 %(cpp_unique_options) %(cc1_options)}}}\
987 %{!fsyntax-only:%(invoke_as)}} \
989 %{save-temps|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
990 %(cpp_options) -o %{save-temps:%b.i} %{!save-temps:%g.i}}\
991 %{!save-temps:%{!traditional-cpp:%{!no-integrated-cpp:\
992 cc1 %(cpp_unique_options) %(cc1_options)}}\
993 %{!fsyntax-only:%(invoke_as)}}}}}}", 0, 1, 1},
995 "%{!E:%e-E or -x required when input is from standard input}\
996 %(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)", 0, 0, 0},
997 {".h", "@c-header", 0, 0, 0},
999 /* cc1 has an integrated ISO C preprocessor. We should invoke the
1000 external preprocessor if -save-temps is given. */
1001 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\
1003 %{save-temps|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
1004 %(cpp_options) -o %{save-temps:%b.i} %{!save-temps:%g.i} \n\
1005 cc1 -fpreprocessed %{save-temps:%b.i} %{!save-temps:%g.i} \
1007 -o %g.s %{!o*:--output-pch=%i.gch}\
1008 %W{o*:--output-pch=%*}%V}\
1009 %{!save-temps:%{!traditional-cpp:%{!no-integrated-cpp:\
1010 cc1 %(cpp_unique_options) %(cc1_options)\
1011 -o %g.s %{!o*:--output-pch=%i.gch}\
1012 %W{o*:--output-pch=%*}%V}}}}}}", 0, 0, 0},
1013 {".i", "@cpp-output", 0, 1, 0},
1015 "%{!M:%{!MM:%{!E:cc1 -fpreprocessed %i %(cc1_options) %{!fsyntax-only:%(invoke_as)}}}}", 0, 1, 0},
1016 {".s", "@assembler", 0, 1, 0},
1018 "%{!M:%{!MM:%{!E:%{!S:as %(asm_debug) %(asm_options) %i %A }}}}", 0, 1, 0},
1019 {".S", "@assembler-with-cpp", 0, 1, 0},
1020 {"@assembler-with-cpp",
1021 #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT
1022 "%(trad_capable_cpp) -lang-asm %(cpp_options)\
1023 %{E|M|MM:%(cpp_debug_options)}\
1024 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\
1025 as %(asm_debug) %(asm_options) %|.s %A }}}}"
1027 "%(trad_capable_cpp) -lang-asm %(cpp_options)\
1028 %{E|M|MM:%(cpp_debug_options)}\
1029 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\
1030 as %(asm_debug) %(asm_options) %m.s %A }}}}"
1035 /* Mark end of table. */
1039 /* Number of elements in default_compilers, not counting the terminator. */
1041 static const int n_default_compilers = ARRAY_SIZE (default_compilers) - 1;
1043 /* A vector of options to give to the linker.
1044 These options are accumulated by %x,
1045 and substituted into the linker command with %X. */
1046 static int n_linker_options;
1047 static char **linker_options;
1049 /* A vector of options to give to the assembler.
1050 These options are accumulated by -Wa,
1051 and substituted into the assembler command with %Y. */
1052 static int n_assembler_options;
1053 static char **assembler_options;
1055 /* A vector of options to give to the preprocessor.
1056 These options are accumulated by -Wp,
1057 and substituted into the preprocessor command with %Z. */
1058 static int n_preprocessor_options;
1059 static char **preprocessor_options;
1061 /* Define how to map long options into short ones. */
1063 /* This structure describes one mapping. */
1066 /* The long option's name. */
1067 const char *const name;
1068 /* The equivalent short option. */
1069 const char *const equivalent;
1070 /* Argument info. A string of flag chars; NULL equals no options.
1071 a => argument required.
1072 o => argument optional.
1073 j => join argument to equivalent, making one word.
1074 * => require other text after NAME as an argument. */
1075 const char *const arg_info;
1078 /* This is the table of mappings. Mappings are tried sequentially
1079 for each option encountered; the first one that matches, wins. */
1081 static const struct option_map option_map[] =
1083 {"--all-warnings", "-Wall", 0},
1084 {"--ansi", "-ansi", 0},
1085 {"--assemble", "-S", 0},
1086 {"--assert", "-A", "a"},
1087 {"--classpath", "-fclasspath=", "aj"},
1088 {"--bootclasspath", "-fbootclasspath=", "aj"},
1089 {"--CLASSPATH", "-fclasspath=", "aj"},
1090 {"--combine", "-combine", 0},
1091 {"--comments", "-C", 0},
1092 {"--comments-in-macros", "-CC", 0},
1093 {"--compile", "-c", 0},
1094 {"--debug", "-g", "oj"},
1095 {"--define-macro", "-D", "aj"},
1096 {"--dependencies", "-M", 0},
1097 {"--dump", "-d", "a"},
1098 {"--dumpbase", "-dumpbase", "a"},
1099 {"--encoding", "-fencoding=", "aj"},
1100 {"--entry", "-e", 0},
1101 {"--extra-warnings", "-W", 0},
1102 {"--extdirs", "-fextdirs=", "aj"},
1103 {"--for-assembler", "-Wa", "a"},
1104 {"--for-linker", "-Xlinker", "a"},
1105 {"--force-link", "-u", "a"},
1106 {"--coverage", "-coverage", 0},
1107 {"--imacros", "-imacros", "a"},
1108 {"--include", "-include", "a"},
1109 {"--include-barrier", "-I-", 0},
1110 {"--include-directory", "-I", "aj"},
1111 {"--include-directory-after", "-idirafter", "a"},
1112 {"--include-prefix", "-iprefix", "a"},
1113 {"--include-with-prefix", "-iwithprefix", "a"},
1114 {"--include-with-prefix-before", "-iwithprefixbefore", "a"},
1115 {"--include-with-prefix-after", "-iwithprefix", "a"},
1116 {"--language", "-x", "a"},
1117 {"--library-directory", "-L", "a"},
1118 {"--machine", "-m", "aj"},
1119 {"--machine-", "-m", "*j"},
1120 {"--no-integrated-cpp", "-no-integrated-cpp", 0},
1121 {"--no-line-commands", "-P", 0},
1122 {"--no-precompiled-includes", "-noprecomp", 0},
1123 {"--no-standard-includes", "-nostdinc", 0},
1124 {"--no-standard-libraries", "-nostdlib", 0},
1125 {"--no-warnings", "-w", 0},
1126 {"--optimize", "-O", "oj"},
1127 {"--output", "-o", "a"},
1128 {"--output-class-directory", "-foutput-class-dir=", "ja"},
1129 {"--param", "--param", "a"},
1130 {"--pass-exit-codes", "-pass-exit-codes", 0},
1131 {"--pedantic", "-pedantic", 0},
1132 {"--pedantic-errors", "-pedantic-errors", 0},
1133 {"--pie", "-pie", 0},
1134 {"--pipe", "-pipe", 0},
1135 {"--prefix", "-B", "a"},
1136 {"--preprocess", "-E", 0},
1137 {"--print-search-dirs", "-print-search-dirs", 0},
1138 {"--print-file-name", "-print-file-name=", "aj"},
1139 {"--print-libgcc-file-name", "-print-libgcc-file-name", 0},
1140 {"--print-missing-file-dependencies", "-MG", 0},
1141 {"--print-multi-lib", "-print-multi-lib", 0},
1142 {"--print-multi-directory", "-print-multi-directory", 0},
1143 {"--print-multi-os-directory", "-print-multi-os-directory", 0},
1144 {"--print-prog-name", "-print-prog-name=", "aj"},
1145 {"--print-sysroot-headers-suffix", "-print-sysroot-headers-suffix", 0},
1146 {"--profile", "-p", 0},
1147 {"--profile-blocks", "-a", 0},
1148 {"--quiet", "-q", 0},
1149 {"--resource", "-fcompile-resource=", "aj"},
1150 {"--save-temps", "-save-temps", 0},
1151 {"--shared", "-shared", 0},
1152 {"--silent", "-q", 0},
1153 {"--specs", "-specs=", "aj"},
1154 {"--static", "-static", 0},
1155 {"--std", "-std=", "aj"},
1156 {"--symbolic", "-symbolic", 0},
1157 {"--sysroot", "--sysroot=", "aj"},
1158 {"--time", "-time", 0},
1159 {"--trace-includes", "-H", 0},
1160 {"--traditional", "-traditional", 0},
1161 {"--traditional-cpp", "-traditional-cpp", 0},
1162 {"--trigraphs", "-trigraphs", 0},
1163 {"--undefine-macro", "-U", "aj"},
1164 {"--user-dependencies", "-MM", 0},
1165 {"--verbose", "-v", 0},
1166 {"--warn-", "-W", "*j"},
1167 {"--write-dependencies", "-MD", 0},
1168 {"--write-user-dependencies", "-MMD", 0},
1173 #ifdef TARGET_OPTION_TRANSLATE_TABLE
1174 static const struct {
1175 const char *const option_found;
1176 const char *const replacements;
1177 } target_option_translations[] =
1179 TARGET_OPTION_TRANSLATE_TABLE,
1184 /* Translate the options described by *ARGCP and *ARGVP.
1185 Make a new vector and store it back in *ARGVP,
1186 and store its length in *ARGVC. */
1189 translate_options (int *argcp, const char *const **argvp)
1193 const char *const *argv = *argvp;
1194 int newvsize = (argc + 2) * 2 * sizeof (const char *);
1195 const char **newv = xmalloc (newvsize);
1199 newv[newindex++] = argv[i++];
1203 #ifdef TARGET_OPTION_TRANSLATE_TABLE
1207 target_option_translations[tott_idx].option_found;
1210 if (strcmp (target_option_translations[tott_idx].option_found,
1217 for (sp = target_option_translations[tott_idx].replacements;
1224 newvsize += spaces * sizeof (const char *);
1225 newv = xrealloc (newv, newvsize);
1227 sp = target_option_translations[tott_idx].replacements;
1236 newv[newindex++] = np;
1237 while (*np != ' ' && *np)
1248 if (target_option_translations[tott_idx].option_found)
1252 /* Translate -- options. */
1253 if (argv[i][0] == '-' && argv[i][1] == '-')
1256 /* Find a mapping that applies to this option. */
1257 for (j = 0; j < ARRAY_SIZE (option_map); j++)
1259 size_t optlen = strlen (option_map[j].name);
1260 size_t arglen = strlen (argv[i]);
1261 size_t complen = arglen > optlen ? optlen : arglen;
1262 const char *arginfo = option_map[j].arg_info;
1267 if (!strncmp (argv[i], option_map[j].name, complen))
1269 const char *arg = 0;
1271 if (arglen < optlen)
1274 for (k = j + 1; k < ARRAY_SIZE (option_map); k++)
1275 if (strlen (option_map[k].name) >= arglen
1276 && !strncmp (argv[i], option_map[k].name, arglen))
1278 error ("ambiguous abbreviation %s", argv[i]);
1282 if (k != ARRAY_SIZE (option_map))
1286 if (arglen > optlen)
1288 /* If the option has an argument, accept that. */
1289 if (argv[i][optlen] == '=')
1290 arg = argv[i] + optlen + 1;
1292 /* If this mapping requires extra text at end of name,
1293 accept that as "argument". */
1294 else if (strchr (arginfo, '*') != 0)
1295 arg = argv[i] + optlen;
1297 /* Otherwise, extra text at end means mismatch.
1298 Try other mappings. */
1303 else if (strchr (arginfo, '*') != 0)
1305 error ("incomplete '%s' option", option_map[j].name);
1309 /* Handle arguments. */
1310 if (strchr (arginfo, 'a') != 0)
1316 error ("missing argument to '%s' option",
1317 option_map[j].name);
1324 else if (strchr (arginfo, '*') != 0)
1326 else if (strchr (arginfo, 'o') == 0)
1329 error ("extraneous argument to '%s' option",
1330 option_map[j].name);
1334 /* Store the translation as one argv elt or as two. */
1335 if (arg != 0 && strchr (arginfo, 'j') != 0)
1336 newv[newindex++] = concat (option_map[j].equivalent, arg,
1340 newv[newindex++] = option_map[j].equivalent;
1341 newv[newindex++] = arg;
1344 newv[newindex++] = option_map[j].equivalent;
1352 /* Handle old-fashioned options--just copy them through,
1353 with their arguments. */
1354 else if (argv[i][0] == '-')
1356 const char *p = argv[i] + 1;
1360 if (SWITCH_TAKES_ARG (c) > (p[1] != 0))
1361 nskip += SWITCH_TAKES_ARG (c) - (p[1] != 0);
1362 else if (WORD_SWITCH_TAKES_ARG (p))
1363 nskip += WORD_SWITCH_TAKES_ARG (p);
1364 else if ((c == 'B' || c == 'b' || c == 'x')
1367 else if (! strcmp (p, "Xlinker"))
1369 else if (! strcmp (p, "Xpreprocessor"))
1371 else if (! strcmp (p, "Xassembler"))
1374 /* Watch out for an option at the end of the command line that
1375 is missing arguments, and avoid skipping past the end of the
1377 if (nskip + i > argc)
1382 newv[newindex++] = argv[i++];
1387 /* Ordinary operands, or +e options. */
1388 newv[newindex++] = argv[i++];
1398 skip_whitespace (char *p)
1402 /* A fully-blank line is a delimiter in the SPEC file and shouldn't
1403 be considered whitespace. */
1404 if (p[0] == '\n' && p[1] == '\n' && p[2] == '\n')
1406 else if (*p == '\n' || *p == ' ' || *p == '\t')
1420 /* Structures to keep track of prefixes to try when looking for files. */
1424 const char *prefix; /* String to prepend to the path. */
1425 struct prefix_list *next; /* Next in linked list. */
1426 int require_machine_suffix; /* Don't use without machine_suffix. */
1427 /* 2 means try both machine_suffix and just_machine_suffix. */
1428 int priority; /* Sort key - priority within list. */
1429 int os_multilib; /* 1 if OS multilib scheme should be used,
1430 0 for GCC multilib scheme. */
1435 struct prefix_list *plist; /* List of prefixes to try */
1436 int max_len; /* Max length of a prefix in PLIST */
1437 const char *name; /* Name of this list (used in config stuff) */
1440 /* List of prefixes to try when looking for executables. */
1442 static struct path_prefix exec_prefixes = { 0, 0, "exec" };
1444 /* List of prefixes to try when looking for startup (crt0) files. */
1446 static struct path_prefix startfile_prefixes = { 0, 0, "startfile" };
1448 /* List of prefixes to try when looking for include files. */
1450 static struct path_prefix include_prefixes = { 0, 0, "include" };
1452 /* Suffix to attach to directories searched for commands.
1453 This looks like `MACHINE/VERSION/'. */
1455 static const char *machine_suffix = 0;
1457 /* Suffix to attach to directories searched for commands.
1458 This is just `MACHINE/'. */
1460 static const char *just_machine_suffix = 0;
1462 /* Adjusted value of GCC_EXEC_PREFIX envvar. */
1464 static const char *gcc_exec_prefix;
1466 /* Adjusted value of standard_libexec_prefix. */
1468 static const char *gcc_libexec_prefix;
1470 /* Default prefixes to attach to command names. */
1472 #ifndef STANDARD_STARTFILE_PREFIX_1
1473 #define STANDARD_STARTFILE_PREFIX_1 "/lib/"
1475 #ifndef STANDARD_STARTFILE_PREFIX_2
1476 #define STANDARD_STARTFILE_PREFIX_2 "/usr/lib/"
1479 #ifdef CROSS_DIRECTORY_STRUCTURE /* Don't use these prefixes for a cross compiler. */
1480 #undef MD_EXEC_PREFIX
1481 #undef MD_STARTFILE_PREFIX
1482 #undef MD_STARTFILE_PREFIX_1
1485 /* If no prefixes defined, use the null string, which will disable them. */
1486 #ifndef MD_EXEC_PREFIX
1487 #define MD_EXEC_PREFIX ""
1489 #ifndef MD_STARTFILE_PREFIX
1490 #define MD_STARTFILE_PREFIX ""
1492 #ifndef MD_STARTFILE_PREFIX_1
1493 #define MD_STARTFILE_PREFIX_1 ""
1496 /* These directories are locations set at configure-time based on the
1497 --prefix option provided to configure. Their initializers are
1498 defined in Makefile.in. These paths are not *directly* used when
1499 gcc_exec_prefix is set because, in that case, we know where the
1500 compiler has been installed, and use paths relative to that
1501 location instead. */
1502 static const char *const standard_exec_prefix = STANDARD_EXEC_PREFIX;
1503 static const char *const standard_libexec_prefix = STANDARD_LIBEXEC_PREFIX;
1504 static const char *const standard_bindir_prefix = STANDARD_BINDIR_PREFIX;
1505 static const char *const standard_startfile_prefix = STANDARD_STARTFILE_PREFIX;
1507 /* For native compilers, these are well-known paths containing
1508 components that may be provided by the system. For cross
1509 compilers, these paths are not used. */
1510 static const char *const standard_exec_prefix_1 = "/usr/libexec/gcc/";
1511 static const char *const standard_exec_prefix_2 = "/usr/lib/gcc/";
1512 static const char *md_exec_prefix = MD_EXEC_PREFIX;
1513 static const char *md_startfile_prefix = MD_STARTFILE_PREFIX;
1514 static const char *md_startfile_prefix_1 = MD_STARTFILE_PREFIX_1;
1515 static const char *const standard_startfile_prefix_1
1516 = STANDARD_STARTFILE_PREFIX_1;
1517 static const char *const standard_startfile_prefix_2
1518 = STANDARD_STARTFILE_PREFIX_2;
1520 /* A relative path to be used in finding the location of tools
1521 relative to the driver. */
1522 static const char *const tooldir_base_prefix = TOOLDIR_BASE_PREFIX;
1524 /* Subdirectory to use for locating libraries. Set by
1525 set_multilib_dir based on the compilation options. */
1527 static const char *multilib_dir;
1529 /* Subdirectory to use for locating libraries in OS conventions. Set by
1530 set_multilib_dir based on the compilation options. */
1532 static const char *multilib_os_dir;
1534 /* Structure to keep track of the specs that have been defined so far.
1535 These are accessed using %(specname) or %[specname] in a compiler
1540 /* The following 2 fields must be first */
1541 /* to allow EXTRA_SPECS to be initialized */
1542 const char *name; /* name of the spec. */
1543 const char *ptr; /* available ptr if no static pointer */
1545 /* The following fields are not initialized */
1546 /* by EXTRA_SPECS */
1547 const char **ptr_spec; /* pointer to the spec itself. */
1548 struct spec_list *next; /* Next spec in linked list. */
1549 int name_len; /* length of the name */
1550 int alloc_p; /* whether string was allocated */
1553 #define INIT_STATIC_SPEC(NAME,PTR) \
1554 { NAME, NULL, PTR, (struct spec_list *) 0, sizeof (NAME) - 1, 0 }
1556 /* List of statically defined specs. */
1557 static struct spec_list static_specs[] =
1559 INIT_STATIC_SPEC ("asm", &asm_spec),
1560 INIT_STATIC_SPEC ("asm_debug", &asm_debug),
1561 INIT_STATIC_SPEC ("asm_final", &asm_final_spec),
1562 INIT_STATIC_SPEC ("asm_options", &asm_options),
1563 INIT_STATIC_SPEC ("invoke_as", &invoke_as),
1564 INIT_STATIC_SPEC ("cpp", &cpp_spec),
1565 INIT_STATIC_SPEC ("cpp_options", &cpp_options),
1566 INIT_STATIC_SPEC ("cpp_debug_options", &cpp_debug_options),
1567 INIT_STATIC_SPEC ("cpp_unique_options", &cpp_unique_options),
1568 INIT_STATIC_SPEC ("trad_capable_cpp", &trad_capable_cpp),
1569 INIT_STATIC_SPEC ("cc1", &cc1_spec),
1570 INIT_STATIC_SPEC ("cc1_options", &cc1_options),
1571 INIT_STATIC_SPEC ("cc1plus", &cc1plus_spec),
1572 INIT_STATIC_SPEC ("link_gcc_c_sequence", &link_gcc_c_sequence_spec),
1573 INIT_STATIC_SPEC ("link_ssp", &link_ssp_spec),
1574 INIT_STATIC_SPEC ("endfile", &endfile_spec),
1575 INIT_STATIC_SPEC ("link", &link_spec),
1576 INIT_STATIC_SPEC ("lib", &lib_spec),
1577 INIT_STATIC_SPEC ("mfwrap", &mfwrap_spec),
1578 INIT_STATIC_SPEC ("mflib", &mflib_spec),
1579 INIT_STATIC_SPEC ("link_gomp", &link_gomp_spec),
1580 INIT_STATIC_SPEC ("libgcc", &libgcc_spec),
1581 INIT_STATIC_SPEC ("startfile", &startfile_spec),
1582 INIT_STATIC_SPEC ("switches_need_spaces", &switches_need_spaces),
1583 INIT_STATIC_SPEC ("cross_compile", &cross_compile),
1584 INIT_STATIC_SPEC ("version", &compiler_version),
1585 INIT_STATIC_SPEC ("multilib", &multilib_select),
1586 INIT_STATIC_SPEC ("multilib_defaults", &multilib_defaults),
1587 INIT_STATIC_SPEC ("multilib_extra", &multilib_extra),
1588 INIT_STATIC_SPEC ("multilib_matches", &multilib_matches),
1589 INIT_STATIC_SPEC ("multilib_exclusions", &multilib_exclusions),
1590 INIT_STATIC_SPEC ("multilib_options", &multilib_options),
1591 INIT_STATIC_SPEC ("linker", &linker_name_spec),
1592 INIT_STATIC_SPEC ("link_libgcc", &link_libgcc_spec),
1593 INIT_STATIC_SPEC ("md_exec_prefix", &md_exec_prefix),
1594 INIT_STATIC_SPEC ("md_startfile_prefix", &md_startfile_prefix),
1595 INIT_STATIC_SPEC ("md_startfile_prefix_1", &md_startfile_prefix_1),
1596 INIT_STATIC_SPEC ("startfile_prefix_spec", &startfile_prefix_spec),
1597 INIT_STATIC_SPEC ("sysroot_spec", &sysroot_spec),
1598 INIT_STATIC_SPEC ("sysroot_suffix_spec", &sysroot_suffix_spec),
1599 INIT_STATIC_SPEC ("sysroot_hdrs_suffix_spec", &sysroot_hdrs_suffix_spec),
1602 #ifdef EXTRA_SPECS /* additional specs needed */
1603 /* Structure to keep track of just the first two args of a spec_list.
1604 That is all that the EXTRA_SPECS macro gives us. */
1607 const char *const name;
1608 const char *const ptr;
1611 static const struct spec_list_1 extra_specs_1[] = { EXTRA_SPECS };
1612 static struct spec_list *extra_specs = (struct spec_list *) 0;
1615 /* List of dynamically allocates specs that have been defined so far. */
1617 static struct spec_list *specs = (struct spec_list *) 0;
1619 /* List of static spec functions. */
1621 static const struct spec_function static_spec_functions[] =
1623 { "getenv", getenv_spec_function },
1624 { "if-exists", if_exists_spec_function },
1625 { "if-exists-else", if_exists_else_spec_function },
1626 { "replace-outfile", replace_outfile_spec_function },
1627 { "version-compare", version_compare_spec_function },
1628 { "include", include_spec_function },
1629 { "print-asm-header", print_asm_header_spec_function },
1630 #ifdef EXTRA_SPEC_FUNCTIONS
1631 EXTRA_SPEC_FUNCTIONS
1636 static int processing_spec_function;
1638 /* Add appropriate libgcc specs to OBSTACK, taking into account
1639 various permutations of -shared-libgcc, -shared, and such. */
1641 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
1643 #ifndef USE_LD_AS_NEEDED
1644 #define USE_LD_AS_NEEDED 0
1648 init_gcc_specs (struct obstack *obstack, const char *shared_name,
1649 const char *static_name, const char *eh_name)
1653 buf = concat ("%{static|static-libgcc:", static_name, " ", eh_name, "}"
1654 "%{!static:%{!static-libgcc:"
1655 #if USE_LD_AS_NEEDED
1656 "%{!shared-libgcc:",
1657 static_name, " --as-needed ", shared_name, " --no-as-needed"
1660 shared_name, "%{!shared: ", static_name, "}"
1664 "%{!shared-libgcc:", static_name, " ", eh_name, "}"
1665 "%{shared-libgcc:", shared_name, " ", static_name, "}"
1669 "%{shared-libgcc:", shared_name, "}"
1670 "%{!shared-libgcc:", static_name, "}"
1673 "%{shared:", shared_name, "}"
1678 obstack_grow (obstack, buf, strlen (buf));
1681 #endif /* ENABLE_SHARED_LIBGCC */
1683 /* Initialize the specs lookup routines. */
1688 struct spec_list *next = (struct spec_list *) 0;
1689 struct spec_list *sl = (struct spec_list *) 0;
1693 return; /* Already initialized. */
1696 notice ("Using built-in specs.\n");
1699 extra_specs = xcalloc (sizeof (struct spec_list),
1700 ARRAY_SIZE (extra_specs_1));
1702 for (i = ARRAY_SIZE (extra_specs_1) - 1; i >= 0; i--)
1704 sl = &extra_specs[i];
1705 sl->name = extra_specs_1[i].name;
1706 sl->ptr = extra_specs_1[i].ptr;
1708 sl->name_len = strlen (sl->name);
1709 sl->ptr_spec = &sl->ptr;
1714 /* Initialize here, not in definition. The IRIX 6 O32 cc sometimes chokes
1715 on ?: in file-scope variable initializations. */
1716 asm_debug = ASM_DEBUG_SPEC;
1718 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--)
1720 sl = &static_specs[i];
1725 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
1726 /* ??? If neither -shared-libgcc nor --static-libgcc was
1727 seen, then we should be making an educated guess. Some proposed
1728 heuristics for ELF include:
1730 (1) If "-Wl,--export-dynamic", then it's a fair bet that the
1731 program will be doing dynamic loading, which will likely
1732 need the shared libgcc.
1734 (2) If "-ldl", then it's also a fair bet that we're doing
1737 (3) For each ET_DYN we're linking against (either through -lfoo
1738 or /some/path/foo.so), check to see whether it or one of
1739 its dependencies depends on a shared libgcc.
1743 If the runtime is fixed to look for program headers instead
1744 of calling __register_frame_info at all, for each object,
1745 use the shared libgcc if any EH symbol referenced.
1747 If crtstuff is fixed to not invoke __register_frame_info
1748 automatically, for each object, use the shared libgcc if
1749 any non-empty unwind section found.
1751 Doing any of this probably requires invoking an external program to
1752 do the actual object file scanning. */
1754 const char *p = libgcc_spec;
1757 /* Transform the extant libgcc_spec into one that uses the shared libgcc
1758 when given the proper command line arguments. */
1761 if (in_sep && *p == '-' && strncmp (p, "-lgcc", 5) == 0)
1763 init_gcc_specs (&obstack,
1765 #ifdef USE_LIBUNWIND_EXCEPTIONS
1771 #ifdef USE_LIBUNWIND_EXCEPTIONS
1772 # ifdef HAVE_LD_STATIC_DYNAMIC
1773 " %{!static:-Bstatic} -lunwind %{!static:-Bdynamic}"
1783 else if (in_sep && *p == 'l' && strncmp (p, "libgcc.a%s", 10) == 0)
1785 /* Ug. We don't know shared library extensions. Hope that
1786 systems that use this form don't do shared libraries. */
1787 init_gcc_specs (&obstack,
1791 #ifdef USE_LIBUNWIND_EXCEPTIONS
1800 obstack_1grow (&obstack, *p);
1801 in_sep = (*p == ' ');
1806 obstack_1grow (&obstack, '\0');
1807 libgcc_spec = XOBFINISH (&obstack, const char *);
1810 #ifdef USE_AS_TRADITIONAL_FORMAT
1811 /* Prepend "--traditional-format" to whatever asm_spec we had before. */
1813 static const char tf[] = "--traditional-format ";
1814 obstack_grow (&obstack, tf, sizeof(tf) - 1);
1815 obstack_grow0 (&obstack, asm_spec, strlen (asm_spec));
1816 asm_spec = XOBFINISH (&obstack, const char *);
1820 /* Prepend LINK_EH_SPEC to whatever link_spec we had before. */
1821 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 notice ("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(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 or -S 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 /* Name with which this program was invoked. */
1937 static const char *programname;
1939 /* Allocate the argument vector. */
1945 argbuf = XNEWVEC (const char *, argbuf_length);
1948 /* Clear out the vector of arguments (after a command is executed). */
1956 /* Add one argument to the vector at the end.
1957 This is done when a space is seen or at the end of the line.
1958 If DELETE_ALWAYS is nonzero, the arg is a filename
1959 and the file should be deleted eventually.
1960 If DELETE_FAILURE is nonzero, the arg is a filename
1961 and the file should be deleted if this compilation fails. */
1964 store_arg (const char *arg, int delete_always, int delete_failure)
1966 if (argbuf_index + 1 == argbuf_length)
1967 argbuf = xrealloc (argbuf, (argbuf_length *= 2) * sizeof (const char *));
1969 argbuf[argbuf_index++] = arg;
1970 argbuf[argbuf_index] = 0;
1972 if (strcmp (arg, "-o") == 0)
1973 have_o_argbuf_index = argbuf_index;
1974 if (delete_always || delete_failure)
1975 record_temp_file (arg, delete_always, delete_failure);
1978 /* Load specs from a file name named FILENAME, replacing occurrences of
1979 various different types of line-endings, \r\n, \n\r and just \r, with
1983 load_specs (const char *filename)
1987 struct stat statbuf;
1994 notice ("Reading specs from %s\n", filename);
1996 /* Open and stat the file. */
1997 desc = open (filename, O_RDONLY, 0);
1999 pfatal_with_name (filename);
2000 if (stat (filename, &statbuf) < 0)
2001 pfatal_with_name (filename);
2003 /* Read contents of file into BUFFER. */
2004 buffer = XNEWVEC (char, statbuf.st_size + 1);
2005 readlen = read (desc, buffer, (unsigned) statbuf.st_size);
2007 pfatal_with_name (filename);
2008 buffer[readlen] = 0;
2011 specs = XNEWVEC (char, readlen + 1);
2013 for (buffer_p = buffer; buffer_p && *buffer_p; buffer_p++)
2019 if (buffer_p > buffer && *(buffer_p - 1) == '\n') /* \n\r */
2021 else if (*(buffer_p + 1) == '\n') /* \r\n */
2035 /* Read compilation specs from a file named FILENAME,
2036 replacing the default ones.
2038 A suffix which starts with `*' is a definition for
2039 one of the machine-specific sub-specs. The "suffix" should be
2040 *asm, *cc1, *cpp, *link, *startfile, etc.
2041 The corresponding spec is stored in asm_spec, etc.,
2042 rather than in the `compilers' vector.
2044 Anything invalid in the file is a fatal error. */
2047 read_specs (const char *filename, int main_p)
2052 buffer = load_specs (filename);
2054 /* Scan BUFFER for specs, putting them in the vector. */
2060 char *in, *out, *p1, *p2, *p3;
2062 /* Advance P in BUFFER to the next nonblank nocomment line. */
2063 p = skip_whitespace (p);
2067 /* Is this a special command that starts with '%'? */
2068 /* Don't allow this for the main specs file, since it would
2069 encourage people to overwrite it. */
2070 if (*p == '%' && !main_p)
2073 while (*p && *p != '\n')
2079 if (!strncmp (p1, "%include", sizeof ("%include") - 1)
2080 && (p1[sizeof "%include" - 1] == ' '
2081 || p1[sizeof "%include" - 1] == '\t'))
2085 p1 += sizeof ("%include");
2086 while (*p1 == ' ' || *p1 == '\t')
2089 if (*p1++ != '<' || p[-2] != '>')
2090 fatal ("specs %%include syntax malformed after %ld characters",
2091 (long) (p1 - buffer + 1));
2094 new_filename = find_a_file (&startfile_prefixes, p1, R_OK, true);
2095 read_specs (new_filename ? new_filename : p1, FALSE);
2098 else if (!strncmp (p1, "%include_noerr", sizeof "%include_noerr" - 1)
2099 && (p1[sizeof "%include_noerr" - 1] == ' '
2100 || p1[sizeof "%include_noerr" - 1] == '\t'))
2104 p1 += sizeof "%include_noerr";
2105 while (*p1 == ' ' || *p1 == '\t')
2108 if (*p1++ != '<' || p[-2] != '>')
2109 fatal ("specs %%include syntax malformed after %ld characters",
2110 (long) (p1 - buffer + 1));
2113 new_filename = find_a_file (&startfile_prefixes, p1, R_OK, true);
2115 read_specs (new_filename, FALSE);
2116 else if (verbose_flag)
2117 notice ("could not find specs file %s\n", p1);
2120 else if (!strncmp (p1, "%rename", sizeof "%rename" - 1)
2121 && (p1[sizeof "%rename" - 1] == ' '
2122 || p1[sizeof "%rename" - 1] == '\t'))
2125 struct spec_list *sl;
2126 struct spec_list *newsl;
2128 /* Get original name. */
2129 p1 += sizeof "%rename";
2130 while (*p1 == ' ' || *p1 == '\t')
2133 if (! ISALPHA ((unsigned char) *p1))
2134 fatal ("specs %%rename syntax malformed after %ld characters",
2135 (long) (p1 - buffer));
2138 while (*p2 && !ISSPACE ((unsigned char) *p2))
2141 if (*p2 != ' ' && *p2 != '\t')
2142 fatal ("specs %%rename syntax malformed after %ld characters",
2143 (long) (p2 - buffer));
2147 while (*p2 == ' ' || *p2 == '\t')
2150 if (! ISALPHA ((unsigned char) *p2))
2151 fatal ("specs %%rename syntax malformed after %ld characters",
2152 (long) (p2 - buffer));
2154 /* Get new spec name. */
2156 while (*p3 && !ISSPACE ((unsigned char) *p3))
2160 fatal ("specs %%rename syntax malformed after %ld characters",
2161 (long) (p3 - buffer));
2164 for (sl = specs; sl; sl = sl->next)
2165 if (name_len == sl->name_len && !strcmp (sl->name, p1))
2169 fatal ("specs %s spec was not found to be renamed", p1);
2171 if (strcmp (p1, p2) == 0)
2174 for (newsl = specs; newsl; newsl = newsl->next)
2175 if (strcmp (newsl->name, p2) == 0)
2176 fatal ("%s: attempt to rename spec '%s' to already defined spec '%s'",
2181 notice ("rename spec %s to %s\n", p1, p2);
2183 notice ("spec is '%s'\n\n", *(sl->ptr_spec));
2187 set_spec (p2, *(sl->ptr_spec));
2189 free (CONST_CAST (*(sl->ptr_spec)));
2191 *(sl->ptr_spec) = "";
2196 fatal ("specs unknown %% command after %ld characters",
2197 (long) (p1 - buffer));
2200 /* Find the colon that should end the suffix. */
2202 while (*p1 && *p1 != ':' && *p1 != '\n')
2205 /* The colon shouldn't be missing. */
2207 fatal ("specs file malformed after %ld characters",
2208 (long) (p1 - buffer));
2210 /* Skip back over trailing whitespace. */
2212 while (p2 > buffer && (p2[-1] == ' ' || p2[-1] == '\t'))
2215 /* Copy the suffix to a string. */
2216 suffix = save_string (p, p2 - p);
2217 /* Find the next line. */
2218 p = skip_whitespace (p1 + 1);
2220 fatal ("specs file malformed after %ld characters",
2221 (long) (p - buffer));
2224 /* Find next blank line or end of string. */
2225 while (*p1 && !(*p1 == '\n' && (p1[1] == '\n' || p1[1] == '\0')))
2228 /* Specs end at the blank line and do not include the newline. */
2229 spec = save_string (p, p1 - p);
2232 /* Delete backslash-newline sequences from the spec. */
2237 if (in[0] == '\\' && in[1] == '\n')
2239 else if (in[0] == '#')
2240 while (*in && *in != '\n')
2248 if (suffix[0] == '*')
2250 if (! strcmp (suffix, "*link_command"))
2251 link_command_spec = spec;
2253 set_spec (suffix + 1, spec);
2257 /* Add this pair to the vector. */
2259 = xrealloc (compilers,
2260 (n_compilers + 2) * sizeof (struct compiler));
2262 compilers[n_compilers].suffix = suffix;
2263 compilers[n_compilers].spec = spec;
2265 memset (&compilers[n_compilers], 0, sizeof compilers[n_compilers]);
2269 link_command_spec = spec;
2272 if (link_command_spec == 0)
2273 fatal ("spec file has no spec for linking");
2276 /* Record the names of temporary files we tell compilers to write,
2277 and delete them at the end of the run. */
2279 /* This is the common prefix we use to make temp file names.
2280 It is chosen once for each run of this program.
2281 It is substituted into a spec by %g or %j.
2282 Thus, all temp file names contain this prefix.
2283 In practice, all temp file names start with this prefix.
2285 This prefix comes from the envvar TMPDIR if it is defined;
2286 otherwise, from the P_tmpdir macro if that is defined;
2287 otherwise, in /usr/tmp or /tmp;
2288 or finally the current directory if all else fails. */
2290 static const char *temp_filename;
2292 /* Length of the prefix. */
2294 static int temp_filename_length;
2296 /* Define the list of temporary files to delete. */
2301 struct temp_file *next;
2304 /* Queue of files to delete on success or failure of compilation. */
2305 static struct temp_file *always_delete_queue;
2306 /* Queue of files to delete on failure of compilation. */
2307 static struct temp_file *failure_delete_queue;
2309 /* Record FILENAME as a file to be deleted automatically.
2310 ALWAYS_DELETE nonzero means delete it if all compilation succeeds;
2311 otherwise delete it in any case.
2312 FAIL_DELETE nonzero means delete it if a compilation step fails;
2313 otherwise delete it in any case. */
2316 record_temp_file (const char *filename, int always_delete, int fail_delete)
2318 char *const name = xstrdup (filename);
2322 struct temp_file *temp;
2323 for (temp = always_delete_queue; temp; temp = temp->next)
2324 if (! strcmp (name, temp->name))
2327 temp = XNEW (struct temp_file);
2328 temp->next = always_delete_queue;
2330 always_delete_queue = temp;
2337 struct temp_file *temp;
2338 for (temp = failure_delete_queue; temp; temp = temp->next)
2339 if (! strcmp (name, temp->name))
2342 temp = XNEW (struct temp_file);
2343 temp->next = failure_delete_queue;
2345 failure_delete_queue = temp;
2351 /* Delete all the temporary files whose names we previously recorded. */
2353 #ifndef DELETE_IF_ORDINARY
2354 #define DELETE_IF_ORDINARY(NAME,ST,VERBOSE_FLAG) \
2357 if (stat (NAME, &ST) >= 0 && S_ISREG (ST.st_mode)) \
2358 if (unlink (NAME) < 0) \
2360 perror_with_name (NAME); \
2365 delete_if_ordinary (const char *name)
2371 printf ("Delete %s? (y or n) ", name);
2375 while ((c = getchar ()) != '\n' && c != EOF)
2378 if (i == 'y' || i == 'Y')
2380 DELETE_IF_ORDINARY (name, st, verbose_flag);
2384 delete_temp_files (void)
2386 struct temp_file *temp;
2388 for (temp = always_delete_queue; temp; temp = temp->next)
2389 delete_if_ordinary (temp->name);
2390 always_delete_queue = 0;
2393 /* Delete all the files to be deleted on error. */
2396 delete_failure_queue (void)
2398 struct temp_file *temp;
2400 for (temp = failure_delete_queue; temp; temp = temp->next)
2401 delete_if_ordinary (temp->name);
2405 clear_failure_queue (void)
2407 failure_delete_queue = 0;
2410 /* Call CALLBACK for each path in PATHS, breaking out early if CALLBACK
2412 If DO_MULTI is true iterate over the paths twice, first with multilib
2413 suffix then without, otherwise iterate over the paths once without
2414 adding a multilib suffix. When DO_MULTI is true, some attempt is made
2415 to avoid visiting the same path twice, but we could do better. For
2416 instance, /usr/lib/../lib is considered different from /usr/lib.
2417 At least EXTRA_SPACE chars past the end of the path passed to
2418 CALLBACK are available for use by the callback.
2419 CALLBACK_INFO allows extra parameters to be passed to CALLBACK.
2421 Returns the value returned by CALLBACK. */
2424 for_each_path (const struct path_prefix *paths,
2427 void *(*callback) (char *, void *),
2428 void *callback_info)
2430 struct prefix_list *pl;
2431 const char *multi_dir = NULL;
2432 const char *multi_os_dir = NULL;
2433 const char *multi_suffix;
2434 const char *just_multi_suffix;
2437 bool skip_multi_dir = false;
2438 bool skip_multi_os_dir = false;
2440 multi_suffix = machine_suffix;
2441 just_multi_suffix = just_machine_suffix;
2442 if (do_multi && multilib_dir && strcmp (multilib_dir, ".") != 0)
2444 multi_dir = concat (multilib_dir, dir_separator_str, NULL);
2445 multi_suffix = concat (multi_suffix, multi_dir, NULL);
2446 just_multi_suffix = concat (just_multi_suffix, multi_dir, NULL);
2448 if (do_multi && multilib_os_dir && strcmp (multilib_os_dir, ".") != 0)
2449 multi_os_dir = concat (multilib_os_dir, dir_separator_str, NULL);
2453 size_t multi_dir_len = 0;
2454 size_t multi_os_dir_len = 0;
2456 size_t just_suffix_len;
2460 multi_dir_len = strlen (multi_dir);
2462 multi_os_dir_len = strlen (multi_os_dir);
2463 suffix_len = strlen (multi_suffix);
2464 just_suffix_len = strlen (just_multi_suffix);
2468 len = paths->max_len + extra_space + 1;
2469 if (suffix_len > multi_os_dir_len)
2472 len += multi_os_dir_len;
2473 path = XNEWVEC (char, len);
2476 for (pl = paths->plist; pl != 0; pl = pl->next)
2478 len = strlen (pl->prefix);
2479 memcpy (path, pl->prefix, len);
2481 /* Look first in MACHINE/VERSION subdirectory. */
2482 if (!skip_multi_dir)
2484 memcpy (path + len, multi_suffix, suffix_len + 1);
2485 ret = callback (path, callback_info);
2490 /* Some paths are tried with just the machine (ie. target)
2491 subdir. This is used for finding as, ld, etc. */
2493 && pl->require_machine_suffix == 2)
2495 memcpy (path + len, just_multi_suffix, just_suffix_len + 1);
2496 ret = callback (path, callback_info);
2501 /* Now try the base path. */
2502 if (!pl->require_machine_suffix
2503 && !(pl->os_multilib ? skip_multi_os_dir : skip_multi_dir))
2505 const char *this_multi;
2506 size_t this_multi_len;
2508 if (pl->os_multilib)
2510 this_multi = multi_os_dir;
2511 this_multi_len = multi_os_dir_len;
2515 this_multi = multi_dir;
2516 this_multi_len = multi_dir_len;
2520 memcpy (path + len, this_multi, this_multi_len + 1);
2524 ret = callback (path, callback_info);
2532 if (multi_dir == NULL && multi_os_dir == NULL)
2535 /* Run through the paths again, this time without multilibs.
2536 Don't repeat any we have already seen. */
2539 free (CONST_CAST (multi_dir));
2541 free (CONST_CAST (multi_suffix));
2542 multi_suffix = machine_suffix;
2543 free (CONST_CAST (just_multi_suffix));
2544 just_multi_suffix = just_machine_suffix;
2547 skip_multi_dir = true;
2550 free (CONST_CAST (multi_os_dir));
2551 multi_os_dir = NULL;
2554 skip_multi_os_dir = true;
2559 free (CONST_CAST (multi_dir));
2560 free (CONST_CAST (multi_suffix));
2561 free (CONST_CAST (just_multi_suffix));
2564 free (CONST_CAST (multi_os_dir));
2570 /* Callback for build_search_list. Adds path to obstack being built. */
2572 struct add_to_obstack_info {
2579 add_to_obstack (char *path, void *data)
2581 struct add_to_obstack_info *info = data;
2583 if (info->check_dir && !is_directory (path, false))
2586 if (!info->first_time)
2587 obstack_1grow (info->ob, PATH_SEPARATOR);
2589 obstack_grow (info->ob, path, strlen (path));
2591 info->first_time = false;
2595 /* Build a list of search directories from PATHS.
2596 PREFIX is a string to prepend to the list.
2597 If CHECK_DIR_P is true we ensure the directory exists.
2598 If DO_MULTI is true, multilib paths are output first, then
2600 This is used mostly by putenv_from_prefixes so we use `collect_obstack'.
2601 It is also used by the --print-search-dirs flag. */
2604 build_search_list (const struct path_prefix *paths, const char *prefix,
2605 bool check_dir, bool do_multi)
2607 struct add_to_obstack_info info;
2609 info.ob = &collect_obstack;
2610 info.check_dir = check_dir;
2611 info.first_time = true;
2613 obstack_grow (&collect_obstack, prefix, strlen (prefix));
2614 obstack_1grow (&collect_obstack, '=');
2616 for_each_path (paths, do_multi, 0, add_to_obstack, &info);
2618 obstack_1grow (&collect_obstack, '\0');
2619 return XOBFINISH (&collect_obstack, char *);
2622 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
2626 putenv_from_prefixes (const struct path_prefix *paths, const char *env_var,
2629 putenv (build_search_list (paths, env_var, true, do_multi));
2632 /* Check whether NAME can be accessed in MODE. This is like access,
2633 except that it never considers directories to be executable. */
2636 access_check (const char *name, int mode)
2642 if (stat (name, &st) < 0
2643 || S_ISDIR (st.st_mode))
2647 return access (name, mode);
2650 /* Callback for find_a_file. Appends the file name to the directory
2651 path. If the resulting file exists in the right mode, return the
2652 full pathname to the file. */
2654 struct file_at_path_info {
2663 file_at_path (char *path, void *data)
2665 struct file_at_path_info *info = data;
2666 size_t len = strlen (path);
2668 memcpy (path + len, info->name, info->name_len);
2669 len += info->name_len;
2671 /* Some systems have a suffix for executable files.
2672 So try appending that first. */
2673 if (info->suffix_len)
2675 memcpy (path + len, info->suffix, info->suffix_len + 1);
2676 if (access_check (path, info->mode) == 0)
2681 if (access_check (path, info->mode) == 0)
2687 /* Search for NAME using the prefix list PREFIXES. MODE is passed to
2688 access to check permissions. If DO_MULTI is true, search multilib
2689 paths then non-multilib paths, otherwise do not search multilib paths.
2690 Return 0 if not found, otherwise return its name, allocated with malloc. */
2693 find_a_file (const struct path_prefix *pprefix, const char *name, int mode,
2696 struct file_at_path_info info;
2698 #ifdef DEFAULT_ASSEMBLER
2699 if (! strcmp (name, "as") && access (DEFAULT_ASSEMBLER, mode) == 0)
2700 return xstrdup (DEFAULT_ASSEMBLER);
2703 #ifdef DEFAULT_LINKER
2704 if (! strcmp(name, "ld") && access (DEFAULT_LINKER, mode) == 0)
2705 return xstrdup (DEFAULT_LINKER);
2708 /* Determine the filename to execute (special case for absolute paths). */
2710 if (IS_ABSOLUTE_PATH (name))
2712 if (access (name, mode) == 0)
2713 return xstrdup (name);
2719 info.suffix = (mode & X_OK) != 0 ? HOST_EXECUTABLE_SUFFIX : "";
2720 info.name_len = strlen (info.name);
2721 info.suffix_len = strlen (info.suffix);
2724 return for_each_path (pprefix, do_multi, info.name_len + info.suffix_len,
2725 file_at_path, &info);
2728 /* Ranking of prefixes in the sort list. -B prefixes are put before
2731 enum path_prefix_priority
2733 PREFIX_PRIORITY_B_OPT,
2734 PREFIX_PRIORITY_LAST
2737 /* Add an entry for PREFIX in PLIST. The PLIST is kept in ascending
2738 order according to PRIORITY. Within each PRIORITY, new entries are
2741 If WARN is nonzero, we will warn if no file is found
2742 through this prefix. WARN should point to an int
2743 which will be set to 1 if this entry is used.
2745 COMPONENT is the value to be passed to update_path.
2747 REQUIRE_MACHINE_SUFFIX is 1 if this prefix can't be used without
2748 the complete value of machine_suffix.
2749 2 means try both machine_suffix and just_machine_suffix. */
2752 add_prefix (struct path_prefix *pprefix, const char *prefix,
2753 const char *component, /* enum prefix_priority */ int priority,
2754 int require_machine_suffix, int os_multilib)
2756 struct prefix_list *pl, **prev;
2759 for (prev = &pprefix->plist;
2760 (*prev) != NULL && (*prev)->priority <= priority;
2761 prev = &(*prev)->next)
2764 /* Keep track of the longest prefix. */
2766 prefix = update_path (prefix, component);
2767 len = strlen (prefix);
2768 if (len > pprefix->max_len)
2769 pprefix->max_len = len;
2771 pl = XNEW (struct prefix_list);
2772 pl->prefix = prefix;
2773 pl->require_machine_suffix = require_machine_suffix;
2774 pl->priority = priority;
2775 pl->os_multilib = os_multilib;
2777 /* Insert after PREV. */
2782 /* Same as add_prefix, but prepending target_system_root to prefix. */
2783 /* The target_system_root prefix has been relocated by gcc_exec_prefix. */
2785 add_sysrooted_prefix (struct path_prefix *pprefix, const char *prefix,
2786 const char *component,
2787 /* enum prefix_priority */ int priority,
2788 int require_machine_suffix, int os_multilib)
2790 if (!IS_ABSOLUTE_PATH (prefix))
2791 fatal ("system path '%s' is not absolute", prefix);
2793 if (target_system_root)
2795 if (target_sysroot_suffix)
2796 prefix = concat (target_sysroot_suffix, prefix, NULL);
2797 prefix = concat (target_system_root, prefix, NULL);
2799 /* We have to override this because GCC's notion of sysroot
2800 moves along with GCC. */
2804 add_prefix (pprefix, prefix, component, priority,
2805 require_machine_suffix, os_multilib);
2808 /* Execute the command specified by the arguments on the current line of spec.
2809 When using pipes, this includes several piped-together commands
2810 with `|' between them.
2812 Return 0 if successful, -1 if failed. */
2818 int n_commands; /* # of command. */
2820 struct pex_obj *pex;
2823 const char *prog; /* program name. */
2824 const char **argv; /* vector of args. */
2827 struct command *commands; /* each command buffer with above info. */
2829 gcc_assert (!processing_spec_function);
2831 /* Count # of piped commands. */
2832 for (n_commands = 1, i = 0; i < argbuf_index; i++)
2833 if (strcmp (argbuf[i], "|") == 0)
2836 /* Get storage for each command. */
2837 commands = alloca (n_commands * sizeof (struct command));
2839 /* Split argbuf into its separate piped processes,
2840 and record info about each one.
2841 Also search for the programs that are to be run. */
2843 commands[0].prog = argbuf[0]; /* first command. */
2844 commands[0].argv = &argbuf[0];
2845 string = find_a_file (&exec_prefixes, commands[0].prog, X_OK, false);
2848 commands[0].argv[0] = string;
2850 for (n_commands = 1, i = 0; i < argbuf_index; i++)
2851 if (strcmp (argbuf[i], "|") == 0)
2852 { /* each command. */
2853 #if defined (__MSDOS__) || defined (OS2) || defined (VMS)
2854 fatal ("-pipe not supported");
2856 argbuf[i] = 0; /* termination of command args. */
2857 commands[n_commands].prog = argbuf[i + 1];
2858 commands[n_commands].argv = &argbuf[i + 1];
2859 string = find_a_file (&exec_prefixes, commands[n_commands].prog,
2862 commands[n_commands].argv[0] = string;
2866 argbuf[argbuf_index] = 0;
2868 /* If -v, print what we are about to do, and maybe query. */
2872 /* For help listings, put a blank line between sub-processes. */
2873 if (print_help_list)
2874 fputc ('\n', stderr);
2876 /* Print each piped command as a separate line. */
2877 for (i = 0; i < n_commands; i++)
2879 const char *const *j;
2881 if (verbose_only_flag)
2883 for (j = commands[i].argv; *j; j++)
2886 fprintf (stderr, " \"");
2887 for (p = *j; *p; ++p)
2889 if (*p == '"' || *p == '\\' || *p == '$')
2890 fputc ('\\', stderr);
2893 fputc ('"', stderr);
2897 for (j = commands[i].argv; *j; j++)
2898 fprintf (stderr, " %s", *j);
2900 /* Print a pipe symbol after all but the last command. */
2901 if (i + 1 != n_commands)
2902 fprintf (stderr, " |");
2903 fprintf (stderr, "\n");
2906 if (verbose_only_flag != 0)
2908 /* verbose_only_flag should act as if the spec was
2909 executed, so increment execution_count before
2910 returning. This prevents spurious warnings about
2911 unused linker input files, etc. */
2916 notice ("\nGo ahead? (y or n) ");
2920 while (getchar () != '\n')
2923 if (i != 'y' && i != 'Y')
2928 #ifdef ENABLE_VALGRIND_CHECKING
2929 /* Run the each command through valgrind. To simplify prepending the
2930 path to valgrind and the option "-q" (for quiet operation unless
2931 something triggers), we allocate a separate argv array. */
2933 for (i = 0; i < n_commands; i++)
2939 for (argc = 0; commands[i].argv[argc] != NULL; argc++)
2942 argv = alloca ((argc + 3) * sizeof (char *));
2944 argv[0] = VALGRIND_PATH;
2946 for (j = 2; j < argc + 2; j++)
2947 argv[j] = commands[i].argv[j - 2];
2950 commands[i].argv = argv;
2951 commands[i].prog = argv[0];
2955 /* Run each piped subprocess. */
2957 pex = pex_init (PEX_USE_PIPES | (report_times ? PEX_RECORD_TIMES : 0),
2958 programname, temp_filename);
2960 pfatal_with_name (_("pex_init failed"));
2962 for (i = 0; i < n_commands; i++)
2966 const char *string = commands[i].argv[0];
2968 errmsg = pex_run (pex,
2969 ((i + 1 == n_commands ? PEX_LAST : 0)
2970 | (string == commands[i].prog ? PEX_SEARCH : 0)),
2971 string, (char * const *) CONST_CAST (commands[i].argv),
2980 pfatal_with_name (errmsg);
2984 if (string != commands[i].prog)
2985 free (CONST_CAST (string));
2990 /* Wait for all the subprocesses to finish. */
2994 struct pex_time *times = NULL;
2997 statuses = alloca (n_commands * sizeof (int));
2998 if (!pex_get_status (pex, n_commands, statuses))
2999 pfatal_with_name (_("failed to get exit status"));
3003 times = alloca (n_commands * sizeof (struct pex_time));
3004 if (!pex_get_times (pex, n_commands, times))
3005 pfatal_with_name (_("failed to get process times"));
3010 for (i = 0; i < n_commands; ++i)
3012 int status = statuses[i];
3014 if (WIFSIGNALED (status))
3017 /* SIGPIPE is a special case. It happens in -pipe mode
3018 when the compiler dies before the preprocessor is done,
3019 or the assembler dies before the compiler is done.
3020 There's generally been an error already, and this is
3021 just fallout. So don't generate another error unless
3022 we would otherwise have succeeded. */
3023 if (WTERMSIG (status) == SIGPIPE
3024 && (signal_count || greatest_status >= MIN_FATAL_STATUS))
3032 Internal error: %s (program %s)\n\
3033 Please submit a full bug report.\n\
3034 See %s for instructions.",
3035 strsignal (WTERMSIG (status)), commands[i].prog,
3038 else if (WIFEXITED (status)
3039 && WEXITSTATUS (status) >= MIN_FATAL_STATUS)
3041 if (WEXITSTATUS (status) > greatest_status)
3042 greatest_status = WEXITSTATUS (status);
3048 struct pex_time *pt = ×[i];
3051 ut = ((double) pt->user_seconds
3052 + (double) pt->user_microseconds / 1.0e6);
3053 st = ((double) pt->system_seconds
3054 + (double) pt->system_microseconds / 1.0e6);
3057 notice ("# %s %.2f %.2f\n", commands[i].prog, ut, st);
3065 /* Find all the switches given to us
3066 and make a vector describing them.
3067 The elements of the vector are strings, one per switch given.
3068 If a switch uses following arguments, then the `part1' field
3069 is the switch itself and the `args' field
3070 is a null-terminated vector containing the following arguments.
3071 The `live_cond' field is:
3073 1 if the switch is true in a conditional spec,
3074 -1 if false (overridden by a later switch)
3075 -2 if this switch should be ignored (used in %<S)
3076 The `validated' field is nonzero if any spec has looked at this switch;
3077 if it remains zero at the end of the run, it must be meaningless. */
3080 #define SWITCH_FALSE -1
3081 #define SWITCH_IGNORE -2
3082 #define SWITCH_LIVE 1
3089 unsigned char validated;
3090 unsigned char ordering;
3093 static struct switchstr *switches;
3095 static int n_switches;
3097 /* Language is one of three things:
3099 1) The name of a real programming language.
3100 2) NULL, indicating that no one has figured out
3102 3) '*', indicating that the file should be passed
3107 const char *language;
3108 struct compiler *incompiler;
3113 /* Also a vector of input files specified. */
3115 static struct infile *infiles;
3119 /* True if multiple input files are being compiled to a single
3122 static bool combine_inputs;
3124 /* This counts the number of libraries added by lang_specific_driver, so that
3125 we can tell if there were any user supplied any files or libraries. */
3127 static int added_libraries;
3129 /* And a vector of corresponding output files is made up later. */
3131 const char **outfiles;
3133 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3135 /* Convert NAME to a new name if it is the standard suffix. DO_EXE
3136 is true if we should look for an executable suffix. DO_OBJ
3137 is true if we should look for an object suffix. */
3140 convert_filename (const char *name, int do_exe ATTRIBUTE_UNUSED,
3141 int do_obj ATTRIBUTE_UNUSED)
3143 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3151 len = strlen (name);
3153 #ifdef HAVE_TARGET_OBJECT_SUFFIX
3154 /* Convert x.o to x.obj if TARGET_OBJECT_SUFFIX is ".obj". */
3155 if (do_obj && len > 2
3156 && name[len - 2] == '.'
3157 && name[len - 1] == 'o')
3159 obstack_grow (&obstack, name, len - 2);
3160 obstack_grow0 (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX));
3161 name = XOBFINISH (&obstack, const char *);
3165 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3166 /* If there is no filetype, make it the executable suffix (which includes
3167 the "."). But don't get confused if we have just "-o". */
3168 if (! do_exe || TARGET_EXECUTABLE_SUFFIX[0] == 0 || (len == 2 && name[0] == '-'))
3171 for (i = len - 1; i >= 0; i--)
3172 if (IS_DIR_SEPARATOR (name[i]))
3175 for (i++; i < len; i++)
3179 obstack_grow (&obstack, name, len);
3180 obstack_grow0 (&obstack, TARGET_EXECUTABLE_SUFFIX,
3181 strlen (TARGET_EXECUTABLE_SUFFIX));
3182 name = XOBFINISH (&obstack, const char *);
3189 /* Display the command line switches accepted by gcc. */
3193 printf (_("Usage: %s [options] file...\n"), programname);
3194 fputs (_("Options:\n"), stdout);
3196 fputs (_(" -pass-exit-codes Exit with highest error code from a phase\n"), stdout);
3197 fputs (_(" --help Display this information\n"), stdout);
3198 fputs (_(" --target-help Display target specific command line options\n"), stdout);
3199 fputs (_(" --help={target|optimizers|warnings|undocumented|params}[,{[^]joined|[^]separate}]\n"), stdout);
3200 fputs (_(" Display specific types of command line options\n"), stdout);
3202 fputs (_(" (Use '-v --help' to display command line options of sub-processes)\n"), stdout);
3203 fputs (_(" -dumpspecs Display all of the built in spec strings\n"), stdout);
3204 fputs (_(" -dumpversion Display the version of the compiler\n"), stdout);
3205 fputs (_(" -dumpmachine Display the compiler's target processor\n"), stdout);
3206 fputs (_(" -print-search-dirs Display the directories in the compiler's search path\n"), stdout);
3207 fputs (_(" -print-libgcc-file-name Display the name of the compiler's companion library\n"), stdout);
3208 fputs (_(" -print-file-name=<lib> Display the full path to library <lib>\n"), stdout);
3209 fputs (_(" -print-prog-name=<prog> Display the full path to compiler component <prog>\n"), stdout);
3210 fputs (_(" -print-multi-directory Display the root directory for versions of libgcc\n"), stdout);
3212 -print-multi-lib Display the mapping between command line options and\n\
3213 multiple library search directories\n"), stdout);
3214 fputs (_(" -print-multi-os-directory Display the relative path to OS libraries\n"), stdout);
3215 fputs (_(" -print-sysroot-headers-suffix Display the sysroot suffix used to find headers\n"), stdout);
3216 fputs (_(" -Wa,<options> Pass comma-separated <options> on to the assembler\n"), stdout);
3217 fputs (_(" -Wp,<options> Pass comma-separated <options> on to the preprocessor\n"), stdout);
3218 fputs (_(" -Wl,<options> Pass comma-separated <options> on to the linker\n"), stdout);
3219 fputs (_(" -Xassembler <arg> Pass <arg> on to the assembler\n"), stdout);
3220 fputs (_(" -Xpreprocessor <arg> Pass <arg> on to the preprocessor\n"), stdout);
3221 fputs (_(" -Xlinker <arg> Pass <arg> on to the linker\n"), stdout);
3222 fputs (_(" -combine Pass multiple source files to compiler at once\n"), stdout);
3223 fputs (_(" -save-temps Do not delete intermediate files\n"), stdout);
3224 fputs (_(" -pipe Use pipes rather than intermediate files\n"), stdout);
3225 fputs (_(" -time Time the execution of each subprocess\n"), stdout);
3226 fputs (_(" -specs=<file> Override built-in specs with the contents of <file>\n"), stdout);
3227 fputs (_(" -std=<standard> Assume that the input sources are for <standard>\n"), stdout);
3229 --sysroot=<directory> Use <directory> as the root directory for headers\n\
3230 and libraries\n"), stdout);
3231 fputs (_(" -B <directory> Add <directory> to the compiler's search paths\n"), stdout);
3232 fputs (_(" -b <machine> Run gcc for target <machine>, if installed\n"), stdout);
3233 fputs (_(" -V <version> Run gcc version number <version>, if installed\n"), stdout);
3234 fputs (_(" -v Display the programs invoked by the compiler\n"), stdout);
3235 fputs (_(" -### Like -v but options quoted and commands not executed\n"), stdout);
3236 fputs (_(" -E Preprocess only; do not compile, assemble or link\n"), stdout);
3237 fputs (_(" -S Compile only; do not assemble or link\n"), stdout);
3238 fputs (_(" -c Compile and assemble, but do not link\n"), stdout);
3239 fputs (_(" -o <file> Place the output into <file>\n"), stdout);
3241 -x <language> Specify the language of the following input files\n\
3242 Permissible languages include: c c++ assembler none\n\
3243 'none' means revert to the default behavior of\n\
3244 guessing the language based on the file's extension\n\
3248 \nOptions starting with -g, -f, -m, -O, -W, or --param are automatically\n\
3249 passed on to the various sub-processes invoked by %s. In order to pass\n\
3250 other options on to these processes the -W<letter> options must be used.\n\
3253 /* The rest of the options are displayed by invocations of the various
3258 add_preprocessor_option (const char *option, int len)
3260 n_preprocessor_options++;
3262 if (! preprocessor_options)
3263 preprocessor_options = XNEWVEC (char *, n_preprocessor_options);
3265 preprocessor_options = xrealloc (preprocessor_options,
3266 n_preprocessor_options * sizeof (char *));
3268 preprocessor_options [n_preprocessor_options - 1] =
3269 save_string (option, len);
3273 add_assembler_option (const char *option, int len)
3275 n_assembler_options++;
3277 if (! assembler_options)
3278 assembler_options = XNEWVEC (char *, n_assembler_options);
3280 assembler_options = xrealloc (assembler_options,
3281 n_assembler_options * sizeof (char *));
3283 assembler_options [n_assembler_options - 1] = save_string (option, len);
3287 add_linker_option (const char *option, int len)
3291 if (! linker_options)
3292 linker_options = XNEWVEC (char *, n_linker_options);
3294 linker_options = xrealloc (linker_options,
3295 n_linker_options * sizeof (char *));
3297 linker_options [n_linker_options - 1] = save_string (option, len);
3300 /* Create the vector `switches' and its contents.
3301 Store its length in `n_switches'. */
3304 process_command (int argc, const char **argv)
3309 const char *spec_lang = 0;
3310 int last_language_n_infiles;
3311 int lang_n_infiles = 0;
3312 #ifdef MODIFY_TARGET_NAME
3313 int is_modify_target_name;
3316 const char *tooldir_prefix;
3318 GET_ENVIRONMENT (gcc_exec_prefix, "GCC_EXEC_PREFIX");
3322 added_libraries = 0;
3324 /* Figure compiler version from version string. */
3326 compiler_version = temp1 = xstrdup (version_string);
3328 for (; *temp1; ++temp1)
3337 /* If there is a -V or -b option (or both), process it now, before
3338 trying to interpret the rest of the command line.
3339 Use heuristic that all configuration names must have at least
3340 one dash '-'. This allows us to pass options starting with -b. */
3341 if (argc > 1 && argv[1][0] == '-'
3342 && (argv[1][1] == 'V' ||
3343 ((argv[1][1] == 'b') && (NULL != strchr(argv[1] + 2,'-')))))
3345 const char *new_version = DEFAULT_TARGET_VERSION;
3346 const char *new_machine = DEFAULT_TARGET_MACHINE;
3347 const char *progname = argv[0];
3352 while (argc > 1 && argv[1][0] == '-'
3353 && (argv[1][1] == 'V' ||
3354 ((argv[1][1] == 'b') && ( NULL != strchr(argv[1] + 2,'-')))))
3356 char opt = argv[1][1];
3358 if (argv[1][2] != '\0')
3371 fatal ("'-%c' option must have argument", opt);
3378 for (baselen = strlen (progname); baselen > 0; baselen--)
3379 if (IS_DIR_SEPARATOR (progname[baselen-1]))
3381 new_argv0 = xmemdup (progname, baselen,
3382 baselen + concat_length (new_version, new_machine,
3383 "-gcc-", NULL) + 1);
3384 strcpy (new_argv0 + baselen, new_machine);
3385 strcat (new_argv0, "-gcc-");
3386 strcat (new_argv0, new_version);
3388 new_argv = xmemdup (argv, (argc + 1) * sizeof (argv[0]),
3389 (argc + 1) * sizeof (argv[0]));
3390 new_argv[0] = new_argv0;
3392 execvp (new_argv0, new_argv);
3393 fatal ("couldn't run '%s': %s", new_argv0, xstrerror (errno));
3396 /* Set up the default search paths. If there is no GCC_EXEC_PREFIX,
3397 see if we can create it from the pathname specified in argv[0]. */
3399 gcc_libexec_prefix = standard_libexec_prefix;
3401 /* FIXME: make_relative_prefix doesn't yet work for VMS. */
3402 if (!gcc_exec_prefix)
3404 gcc_exec_prefix = make_relative_prefix (argv[0], standard_bindir_prefix,
3405 standard_exec_prefix);
3406 gcc_libexec_prefix = make_relative_prefix (argv[0],
3407 standard_bindir_prefix,
3408 standard_libexec_prefix);
3409 if (gcc_exec_prefix)
3410 putenv (concat ("GCC_EXEC_PREFIX=", gcc_exec_prefix, NULL));
3414 /* make_relative_prefix requires a program name, but
3415 GCC_EXEC_PREFIX is typically a directory name with a trailing
3416 / (which is ignored by make_relative_prefix), so append a
3418 char *tmp_prefix = concat (gcc_exec_prefix, "gcc", NULL);
3419 gcc_libexec_prefix = make_relative_prefix (tmp_prefix,
3420 standard_exec_prefix,
3421 standard_libexec_prefix);
3423 /* The path is unrelocated, so fallback to the original setting. */
3424 if (!gcc_libexec_prefix)
3425 gcc_libexec_prefix = standard_libexec_prefix;
3431 /* From this point onward, gcc_exec_prefix is non-null if the toolchain
3432 is relocated. The toolchain was either relocated using GCC_EXEC_PREFIX
3433 or an automatically created GCC_EXEC_PREFIX from argv[0]. */
3435 if (gcc_exec_prefix)
3437 int len = strlen (gcc_exec_prefix);
3439 if (len > (int) sizeof ("/lib/gcc/") - 1
3440 && (IS_DIR_SEPARATOR (gcc_exec_prefix[len-1])))
3442 temp = gcc_exec_prefix + len - sizeof ("/lib/gcc/") + 1;
3443 if (IS_DIR_SEPARATOR (*temp)
3444 && strncmp (temp + 1, "lib", 3) == 0
3445 && IS_DIR_SEPARATOR (temp[4])
3446 && strncmp (temp + 5, "gcc", 3) == 0)
3447 len -= sizeof ("/lib/gcc/") - 1;
3450 set_std_prefix (gcc_exec_prefix, len);
3451 add_prefix (&exec_prefixes, gcc_libexec_prefix, "GCC",
3452 PREFIX_PRIORITY_LAST, 0, 0);
3453 add_prefix (&startfile_prefixes, gcc_exec_prefix, "GCC",
3454 PREFIX_PRIORITY_LAST, 0, 0);
3457 /* COMPILER_PATH and LIBRARY_PATH have values
3458 that are lists of directory names with colons. */
3460 GET_ENVIRONMENT (temp, "COMPILER_PATH");
3463 const char *startp, *endp;
3464 char *nstore = alloca (strlen (temp) + 3);
3466 startp = endp = temp;
3469 if (*endp == PATH_SEPARATOR || *endp == 0)
3471 strncpy (nstore, startp, endp - startp);
3473 strcpy (nstore, concat (".", dir_separator_str, NULL));
3474 else if (!IS_DIR_SEPARATOR (endp[-1]))
3476 nstore[endp - startp] = DIR_SEPARATOR;
3477 nstore[endp - startp + 1] = 0;
3480 nstore[endp - startp] = 0;
3481 add_prefix (&exec_prefixes, nstore, 0,
3482 PREFIX_PRIORITY_LAST, 0, 0);
3483 add_prefix (&include_prefixes, nstore, 0,
3484 PREFIX_PRIORITY_LAST, 0, 0);
3487 endp = startp = endp + 1;
3494 GET_ENVIRONMENT (temp, LIBRARY_PATH_ENV);
3495 if (temp && *cross_compile == '0')
3497 const char *startp, *endp;
3498 char *nstore = alloca (strlen (temp) + 3);
3500 startp = endp = temp;
3503 if (*endp == PATH_SEPARATOR || *endp == 0)
3505 strncpy (nstore, startp, endp - startp);
3507 strcpy (nstore, concat (".", dir_separator_str, NULL));
3508 else if (!IS_DIR_SEPARATOR (endp[-1]))
3510 nstore[endp - startp] = DIR_SEPARATOR;
3511 nstore[endp - startp + 1] = 0;
3514 nstore[endp - startp] = 0;
3515 add_prefix (&startfile_prefixes, nstore, NULL,
3516 PREFIX_PRIORITY_LAST, 0, 1);
3519 endp = startp = endp + 1;
3526 /* Use LPATH like LIBRARY_PATH (for the CMU build program). */
3527 GET_ENVIRONMENT (temp, "LPATH");
3528 if (temp && *cross_compile == '0')
3530 const char *startp, *endp;
3531 char *nstore = alloca (strlen (temp) + 3);
3533 startp = endp = temp;
3536 if (*endp == PATH_SEPARATOR || *endp == 0)
3538 strncpy (nstore, startp, endp - startp);
3540 strcpy (nstore, concat (".", dir_separator_str, NULL));
3541 else if (!IS_DIR_SEPARATOR (endp[-1]))
3543 nstore[endp - startp] = DIR_SEPARATOR;
3544 nstore[endp - startp + 1] = 0;
3547 nstore[endp - startp] = 0;
3548 add_prefix (&startfile_prefixes, nstore, NULL,
3549 PREFIX_PRIORITY_LAST, 0, 1);
3552 endp = startp = endp + 1;
3559 /* Convert new-style -- options to old-style. */
3560 translate_options (&argc, (const char *const **) &argv);
3562 /* Do language-specific adjustment/addition of flags. */
3563 lang_specific_driver (&argc, (const char *const **) &argv, &added_libraries);
3565 /* Scan argv twice. Here, the first time, just count how many switches
3566 there will be in their vector, and how many input files in theirs.
3567 Here we also parse the switches that cc itself uses (e.g. -v). */
3569 for (i = 1; i < argc; i++)
3571 if (! strcmp (argv[i], "-dumpspecs"))
3573 struct spec_list *sl;
3575 for (sl = specs; sl; sl = sl->next)
3576 printf ("*%s:\n%s\n\n", sl->name, *(sl->ptr_spec));
3577 if (link_command_spec)
3578 printf ("*link_command:\n%s\n\n", link_command_spec);
3581 else if (! strcmp (argv[i], "-dumpversion"))
3583 printf ("%s\n", spec_version);
3586 else if (! strcmp (argv[i], "-dumpmachine"))
3588 printf ("%s\n", spec_machine);
3591 else if (strcmp (argv[i], "-fversion") == 0)
3593 /* translate_options () has turned --version into -fversion. */
3594 printf (_("%s (GCC) %s\n"), programname, version_string);
3595 printf ("Copyright %s 2007 Free Software Foundation, Inc.\n",
3597 fputs (_("This is free software; see the source for copying conditions. There is NO\n\
3598 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\n"),
3602 else if (strcmp (argv[i], "-fhelp") == 0)
3604 /* translate_options () has turned --help into -fhelp. */
3605 print_help_list = 1;
3607 /* We will be passing a dummy file on to the sub-processes. */
3611 /* CPP driver cannot obtain switch from cc1_options. */
3613 add_preprocessor_option ("--help", 6);
3614 add_assembler_option ("--help", 6);
3615 add_linker_option ("--help", 6);
3617 else if (strncmp (argv[i], "-fhelp=", 7) == 0)
3619 /* translate_options () has turned --help into -fhelp. */
3620 print_subprocess_help = 2;
3622 /* We will be passing a dummy file on to the sub-processes. */
3626 else if (strcmp (argv[i], "-ftarget-help") == 0)
3628 /* translate_options() has turned --target-help into -ftarget-help. */
3629 print_subprocess_help = 1;
3631 /* We will be passing a dummy file on to the sub-processes. */
3635 /* CPP driver cannot obtain switch from cc1_options. */
3637 add_preprocessor_option ("--target-help", 13);
3638 add_assembler_option ("--target-help", 13);
3639 add_linker_option ("--target-help", 13);
3641 else if (! strcmp (argv[i], "-pass-exit-codes"))
3643 pass_exit_codes = 1;
3646 else if (! strcmp (argv[i], "-print-search-dirs"))
3647 print_search_dirs = 1;
3648 else if (! strcmp (argv[i], "-print-libgcc-file-name"))
3649 print_file_name = "libgcc.a";
3650 else if (! strncmp (argv[i], "-print-file-name=", 17))
3651 print_file_name = argv[i] + 17;
3652 else if (! strncmp (argv[i], "-print-prog-name=", 17))
3653 print_prog_name = argv[i] + 17;
3654 else if (! strcmp (argv[i], "-print-multi-lib"))
3655 print_multi_lib = 1;
3656 else if (! strcmp (argv[i], "-print-multi-directory"))
3657 print_multi_directory = 1;
3658 else if (! strcmp (argv[i], "-print-multi-os-directory"))
3659 print_multi_os_directory = 1;
3660 else if (! strcmp (argv[i], "-print-sysroot-headers-suffix"))
3661 print_sysroot_headers_suffix = 1;
3662 else if (! strncmp (argv[i], "-Wa,", 4))
3665 /* Pass the rest of this option to the assembler. */
3667 /* Split the argument at commas. */
3669 for (j = 4; argv[i][j]; j++)
3670 if (argv[i][j] == ',')
3672 add_assembler_option (argv[i] + prev, j - prev);
3676 /* Record the part after the last comma. */
3677 add_assembler_option (argv[i] + prev, j - prev);
3679 else if (! strncmp (argv[i], "-Wp,", 4))
3682 /* Pass the rest of this option to the preprocessor. */
3684 /* Split the argument at commas. */
3686 for (j = 4; argv[i][j]; j++)
3687 if (argv[i][j] == ',')
3689 add_preprocessor_option (argv[i] + prev, j - prev);
3693 /* Record the part after the last comma. */
3694 add_preprocessor_option (argv[i] + prev, j - prev);
3696 else if (argv[i][0] == '+' && argv[i][1] == 'e')
3697 /* The +e options to the C++ front-end. */
3699 else if (strncmp (argv[i], "-Wl,", 4) == 0)
3702 /* Split the argument at commas. */
3703 for (j = 3; argv[i][j]; j++)
3704 n_infiles += (argv[i][j] == ',');
3706 else if (strcmp (argv[i], "-Xlinker") == 0)
3709 fatal ("argument to '-Xlinker' is missing");
3714 else if (strcmp (argv[i], "-Xpreprocessor") == 0)
3717 fatal ("argument to '-Xpreprocessor' is missing");
3719 add_preprocessor_option (argv[i+1], strlen (argv[i+1]));
3721 else if (strcmp (argv[i], "-Xassembler") == 0)
3724 fatal ("argument to '-Xassembler' is missing");
3726 add_assembler_option (argv[i+1], strlen (argv[i+1]));
3728 else if (strcmp (argv[i], "-l") == 0)
3731 fatal ("argument to '-l' is missing");
3736 else if (strncmp (argv[i], "-l", 2) == 0)
3738 else if (strcmp (argv[i], "-save-temps") == 0)
3740 save_temps_flag = 1;
3743 else if (strcmp (argv[i], "-combine") == 0)
3748 else if (strcmp (argv[i], "-specs") == 0)
3750 struct user_specs *user = XNEW (struct user_specs);
3752 fatal ("argument to '-specs' is missing");
3754 user->next = (struct user_specs *) 0;
3755 user->filename = argv[i];
3756 if (user_specs_tail)
3757 user_specs_tail->next = user;
3759 user_specs_head = user;
3760 user_specs_tail = user;
3762 else if (strncmp (argv[i], "-specs=", 7) == 0)
3764 struct user_specs *user = XNEW (struct user_specs);
3765 if (strlen (argv[i]) == 7)
3766 fatal ("argument to '-specs=' is missing");
3768 user->next = (struct user_specs *) 0;
3769 user->filename = argv[i] + 7;
3770 if (user_specs_tail)
3771 user_specs_tail->next = user;
3773 user_specs_head = user;
3774 user_specs_tail = user;
3776 else if (strcmp (argv[i], "-time") == 0)
3778 else if (strcmp (argv[i], "-pipe") == 0)
3780 /* -pipe has to go into the switches array as well as
3785 else if (strcmp (argv[i], "-###") == 0)
3787 /* This is similar to -v except that there is no execution
3788 of the commands and the echoed arguments are quoted. It
3789 is intended for use in shell scripts to capture the
3790 driver-generated command line. */
3791 verbose_only_flag++;
3794 else if (argv[i][0] == '-' && argv[i][1] != 0)
3796 const char *p = &argv[i][1];
3802 if (NULL == strchr(argv[i] + 2, '-'))
3807 fatal ("'-%c' must come at the start of the command line", c);
3815 if (p[1] == 0 && i + 1 == argc)
3816 fatal ("argument to '-B' is missing");
3822 len = strlen (value);
3824 /* Catch the case where the user has forgotten to append a
3825 directory separator to the path. Note, they may be using
3826 -B to add an executable name prefix, eg "i386-elf-", in
3827 order to distinguish between multiple installations of
3828 GCC in the same directory. Hence we must check to see
3829 if appending a directory separator actually makes a
3830 valid directory name. */
3831 if (! IS_DIR_SEPARATOR (value [len - 1])
3832 && is_directory (value, false))
3834 char *tmp = XNEWVEC (char, len + 2);
3835 strcpy (tmp, value);
3836 tmp[len] = DIR_SEPARATOR;
3841 add_prefix (&exec_prefixes, value, NULL,
3842 PREFIX_PRIORITY_B_OPT, 0, 0);
3843 add_prefix (&startfile_prefixes, value, NULL,
3844 PREFIX_PRIORITY_B_OPT, 0, 0);
3845 add_prefix (&include_prefixes, value, NULL,
3846 PREFIX_PRIORITY_B_OPT, 0, 0);
3851 case 'v': /* Print our subcommands and print versions. */
3853 /* If they do anything other than exactly `-v', don't set
3854 verbose_flag; rather, continue on to give the error. */
3872 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3877 /* Forward scan, just in case -S or -c is specified
3884 if (argv[j][0] == '-')
3886 if (SWITCH_CURTAILS_COMPILATION (argv[j][1])
3892 else if ((skip = SWITCH_TAKES_ARG (argv[j][1])))
3893 j += skip - (argv[j][2] != 0);
3894 else if ((skip = WORD_SWITCH_TAKES_ARG (argv[j] + 1)))
3901 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX) || defined(HAVE_TARGET_OBJECT_SUFFIX)
3903 argv[i + 1] = convert_filename (argv[i + 1], ! have_c, 0);
3905 argv[i] = convert_filename (argv[i], ! have_c, 0);
3912 #ifdef MODIFY_TARGET_NAME
3913 is_modify_target_name = 0;
3915 for (j = 0; j < ARRAY_SIZE (modify_target); j++)
3916 if (! strcmp (argv[i], modify_target[j].sw))
3918 char *new_name = xmalloc (strlen (modify_target[j].str)
3919 + strlen (spec_machine));
3922 int made_addition = 0;
3924 is_modify_target_name = 1;
3925 for (p = spec_machine, q = new_name; *p != 0; )
3927 if (modify_target[j].add_del == DELETE
3928 && (! strncmp (q, modify_target[j].str,
3929 strlen (modify_target[j].str))))
3930 p += strlen (modify_target[j].str);
3931 else if (modify_target[j].add_del == ADD
3932 && ! made_addition && *p == '-')
3934 for (r = modify_target[j].str; *r != 0; )
3942 spec_machine = new_name;
3945 if (is_modify_target_name)
3951 if (SWITCH_TAKES_ARG (c) > (p[1] != 0))
3952 i += SWITCH_TAKES_ARG (c) - (p[1] != 0);
3953 else if (WORD_SWITCH_TAKES_ARG (p))
3954 i += WORD_SWITCH_TAKES_ARG (p);
3964 if (save_temps_flag && use_pipes)
3966 /* -save-temps overrides -pipe, so that temp files are produced */
3967 if (save_temps_flag)
3968 error ("warning: -pipe ignored because -save-temps specified");
3972 /* Set up the search paths. We add directories that we expect to
3973 contain GNU Toolchain components before directories specified by
3974 the machine description so that we will find GNU components (like
3975 the GNU assembler) before those of the host system. */
3977 /* If we don't know where the toolchain has been installed, use the
3978 configured-in locations. */
3979 if (!gcc_exec_prefix)
3982 add_prefix (&exec_prefixes, standard_libexec_prefix, "GCC",
3983 PREFIX_PRIORITY_LAST, 1, 0);
3984 add_prefix (&exec_prefixes, standard_libexec_prefix, "BINUTILS",
3985 PREFIX_PRIORITY_LAST, 2, 0);
3986 add_prefix (&exec_prefixes, standard_exec_prefix, "BINUTILS",
3987 PREFIX_PRIORITY_LAST, 2, 0);
3989 add_prefix (&startfile_prefixes, standard_exec_prefix, "BINUTILS",
3990 PREFIX_PRIORITY_LAST, 1, 0);
3993 /* If not cross-compiling, search well-known system locations. */
3994 if (*cross_compile == '0')
3997 add_prefix (&exec_prefixes, standard_exec_prefix_1, "BINUTILS",
3998 PREFIX_PRIORITY_LAST, 2, 0);
3999 add_prefix (&exec_prefixes, standard_exec_prefix_2, "BINUTILS",
4000 PREFIX_PRIORITY_LAST, 2, 0);
4002 add_prefix (&startfile_prefixes, standard_exec_prefix_2, "BINUTILS",
4003 PREFIX_PRIORITY_LAST, 1, 0);
4006 gcc_assert (!IS_ABSOLUTE_PATH (tooldir_base_prefix));
4007 tooldir_prefix = concat (tooldir_base_prefix, spec_machine,
4008 dir_separator_str, NULL);
4010 /* Look for tools relative to the location from which the driver is
4011 running, or, if that is not available, the configured prefix. */
4013 = concat (gcc_exec_prefix ? gcc_exec_prefix : standard_exec_prefix,
4014 spec_machine, dir_separator_str,
4015 spec_version, dir_separator_str, tooldir_prefix, NULL);
4017 add_prefix (&exec_prefixes,
4018 concat (tooldir_prefix, "bin", dir_separator_str, NULL),
4019 "BINUTILS", PREFIX_PRIORITY_LAST, 0, 0);
4020 add_prefix (&startfile_prefixes,
4021 concat (tooldir_prefix, "lib", dir_separator_str, NULL),
4022 "BINUTILS", PREFIX_PRIORITY_LAST, 0, 1);
4024 #if defined(TARGET_SYSTEM_ROOT_RELOCATABLE) && !defined(VMS)
4025 /* If the normal TARGET_SYSTEM_ROOT is inside of $exec_prefix,
4026 then consider it to relocate with the rest of the GCC installation
4027 if GCC_EXEC_PREFIX is set.
4028 ``make_relative_prefix'' is not compiled for VMS, so don't call it. */
4029 if (target_system_root && gcc_exec_prefix)
4031 char *tmp_prefix = make_relative_prefix (argv[0],
4032 standard_bindir_prefix,
4033 target_system_root);
4034 if (tmp_prefix && access_check (tmp_prefix, F_OK) == 0)
4036 target_system_root = tmp_prefix;
4037 target_system_root_changed = 1;
4042 /* More prefixes are enabled in main, after we read the specs file
4043 and determine whether this is cross-compilation or not. */
4045 /* Then create the space for the vectors and scan again. */
4047 switches = XNEWVEC (struct switchstr, n_switches + 1);
4048 infiles = XNEWVEC (struct infile, n_infiles + 1);
4051 last_language_n_infiles = -1;
4053 /* This, time, copy the text of each switch and store a pointer
4054 to the copy in the vector of switches.
4055 Store all the infiles in their vector. */
4057 for (i = 1; i < argc; i++)
4059 /* Just skip the switches that were handled by the preceding loop. */
4060 #ifdef MODIFY_TARGET_NAME
4061 is_modify_target_name = 0;
4063 for (j = 0; j < ARRAY_SIZE (modify_target); j++)
4064 if (! strcmp (argv[i], modify_target[j].sw))
4065 is_modify_target_name = 1;
4067 if (is_modify_target_name)
4071 if (! strncmp (argv[i], "-Wa,", 4))
4073 else if (! strncmp (argv[i], "-Wp,", 4))
4075 else if (! strcmp (argv[i], "-pass-exit-codes"))
4077 else if (! strcmp (argv[i], "-print-search-dirs"))
4079 else if (! strcmp (argv[i], "-print-libgcc-file-name"))
4081 else if (! strncmp (argv[i], "-print-file-name=", 17))
4083 else if (! strncmp (argv[i], "-print-prog-name=", 17))
4085 else if (! strcmp (argv[i], "-print-multi-lib"))
4087 else if (! strcmp (argv[i], "-print-multi-directory"))
4089 else if (! strcmp (argv[i], "-print-multi-os-directory"))
4091 else if (! strcmp (argv[i], "-print-sysroot-headers-suffix"))
4093 else if (! strncmp (argv[i], "--sysroot=", strlen ("--sysroot=")))
4095 target_system_root = argv[i] + strlen ("--sysroot=");
4096 target_system_root_changed = 1;
4098 else if (argv[i][0] == '+' && argv[i][1] == 'e')
4100 /* Compensate for the +e options to the C++ front-end;
4101 they're there simply for cfront call-compatibility. We do
4102 some magic in default_compilers to pass them down properly.
4103 Note we deliberately start at the `+' here, to avoid passing
4104 -e0 or -e1 down into the linker. */
4105 switches[n_switches].part1 = &argv[i][0];
4106 switches[n_switches].args = 0;
4107 switches[n_switches].live_cond = SWITCH_OK;
4108 switches[n_switches].validated = 0;
4111 else if (strncmp (argv[i], "-Wl,", 4) == 0)
4114 /* Split the argument at commas. */
4116 for (j = 4; argv[i][j]; j++)
4117 if (argv[i][j] == ',')
4119 infiles[n_infiles].language = "*";
4120 infiles[n_infiles++].name
4121 = save_string (argv[i] + prev, j - prev);
4124 /* Record the part after the last comma. */
4125 infiles[n_infiles].language = "*";
4126 infiles[n_infiles++].name = argv[i] + prev;
4128 else if (strcmp (argv[i], "-Xlinker") == 0)
4130 infiles[n_infiles].language = "*";
4131 infiles[n_infiles++].name = argv[++i];
4133 /* Xassembler and Xpreprocessor were already handled in the first argv
4134 scan, so all we need to do here is ignore them and their argument. */
4135 else if (strcmp (argv[i], "-Xassembler") == 0)
4137 else if (strcmp (argv[i], "-Xpreprocessor") == 0)
4139 else if (strcmp (argv[i], "-l") == 0)
4140 { /* POSIX allows separation of -l and the lib arg;
4141 canonicalize by concatenating -l with its arg */
4142 infiles[n_infiles].language = "*";
4143 infiles[n_infiles++].name = concat ("-l", argv[++i], NULL);
4145 else if (strncmp (argv[i], "-l", 2) == 0)
4147 infiles[n_infiles].language = "*";
4148 infiles[n_infiles++].name = argv[i];
4150 else if (strcmp (argv[i], "-specs") == 0)
4152 else if (strncmp (argv[i], "-specs=", 7) == 0)
4154 else if (strcmp (argv[i], "-time") == 0)
4156 else if (strcmp (argv[i], "-###") == 0)
4158 else if (argv[i][0] == '-' && argv[i][1] != 0)
4160 const char *p = &argv[i][1];
4165 if (p[1] == 0 && i + 1 == argc)
4166 fatal ("argument to '-x' is missing");
4168 spec_lang = argv[++i];
4171 if (! strcmp (spec_lang, "none"))
4172 /* Suppress the warning if -xnone comes after the last input
4173 file, because alternate command interfaces like g++ might
4174 find it useful to place -xnone after each input file. */
4177 last_language_n_infiles = n_infiles;
4180 switches[n_switches].part1 = p;
4181 /* Deal with option arguments in separate argv elements. */
4182 if ((SWITCH_TAKES_ARG (c) > (p[1] != 0))
4183 || WORD_SWITCH_TAKES_ARG (p))
4186 int n_args = WORD_SWITCH_TAKES_ARG (p);
4190 /* Count only the option arguments in separate argv elements. */
4191 n_args = SWITCH_TAKES_ARG (c) - (p[1] != 0);
4193 if (i + n_args >= argc)
4194 fatal ("argument to '-%s' is missing", p);
4195 switches[n_switches].args
4196 = XNEWVEC (const char *, n_args + 1);
4198 switches[n_switches].args[j++] = argv[++i];
4199 /* Null-terminate the vector. */
4200 switches[n_switches].args[j] = 0;
4202 else if (strchr (switches_need_spaces, c))
4204 /* On some systems, ld cannot handle some options without
4205 a space. So split the option from its argument. */
4206 char *part1 = XNEWVEC (char, 2);
4210 switches[n_switches].part1 = part1;
4211 switches[n_switches].args = XNEWVEC (const char *, 2);
4212 switches[n_switches].args[0] = xstrdup (p+1);
4213 switches[n_switches].args[1] = 0;
4216 switches[n_switches].args = 0;
4218 switches[n_switches].live_cond = SWITCH_OK;
4219 switches[n_switches].validated = 0;
4220 switches[n_switches].ordering = 0;
4221 /* These are always valid, since gcc.c itself understands the
4222 first four and gfortranspec.c understands -static-libgfortran. */
4223 if (!strcmp (p, "save-temps")
4224 || !strcmp (p, "static-libgcc")
4225 || !strcmp (p, "shared-libgcc")
4226 || !strcmp (p, "pipe")
4227 || !strcmp (p, "static-libgfortran"))
4228 switches[n_switches].validated = 1;
4231 char ch = switches[n_switches].part1[0];
4233 switches[n_switches].validated = 1;
4239 #ifdef HAVE_TARGET_OBJECT_SUFFIX
4240 argv[i] = convert_filename (argv[i], 0, access (argv[i], F_OK));
4243 if (strcmp (argv[i], "-") != 0 && access (argv[i], F_OK) < 0)
4245 perror_with_name (argv[i]);
4250 infiles[n_infiles].language = spec_lang;
4251 infiles[n_infiles++].name = argv[i];
4256 if (n_infiles == last_language_n_infiles && spec_lang != 0)
4257 error ("warning: '-x %s' after last input file has no effect", spec_lang);
4259 /* Ensure we only invoke each subprocess once. */
4260 if (print_subprocess_help || print_help_list)
4264 /* Create a dummy input file, so that we can pass
4265 the help option on to the various sub-processes. */
4266 infiles[0].language = "c";
4267 infiles[0].name = "help-dummy";
4270 switches[n_switches].part1 = 0;
4271 infiles[n_infiles].name = 0;
4274 /* Store switches not filtered out by %<S in spec in COLLECT_GCC_OPTIONS
4275 and place that in the environment. */
4278 set_collect_gcc_options (void)
4283 /* Build COLLECT_GCC_OPTIONS to have all of the options specified to
4285 obstack_grow (&collect_obstack, "COLLECT_GCC_OPTIONS=",
4286 sizeof ("COLLECT_GCC_OPTIONS=") - 1);
4289 for (i = 0; (int) i < n_switches; i++)
4291 const char *const *args;
4294 obstack_grow (&collect_obstack, " ", 1);
4298 /* Ignore elided switches. */
4299 if (switches[i].live_cond == SWITCH_IGNORE)
4302 obstack_grow (&collect_obstack, "'-", 2);
4303 q = switches[i].part1;
4304 while ((p = strchr (q, '\'')))
4306 obstack_grow (&collect_obstack, q, p - q);
4307 obstack_grow (&collect_obstack, "'\\''", 4);
4310 obstack_grow (&collect_obstack, q, strlen (q));
4311 obstack_grow (&collect_obstack, "'", 1);
4313 for (args = switches[i].args; args && *args; args++)
4315 obstack_grow (&collect_obstack, " '", 2);
4317 while ((p = strchr (q, '\'')))
4319 obstack_grow (&collect_obstack, q, p - q);
4320 obstack_grow (&collect_obstack, "'\\''", 4);
4323 obstack_grow (&collect_obstack, q, strlen (q));
4324 obstack_grow (&collect_obstack, "'", 1);
4327 obstack_grow (&collect_obstack, "\0", 1);
4328 putenv (XOBFINISH (&collect_obstack, char *));
4331 /* Process a spec string, accumulating and running commands. */
4333 /* These variables describe the input file name.
4334 input_file_number is the index on outfiles of this file,
4335 so that the output file name can be stored for later use by %o.
4336 input_basename is the start of the part of the input file
4337 sans all directory names, and basename_length is the number
4338 of characters starting there excluding the suffix .c or whatever. */
4340 static const char *input_filename;
4341 static int input_file_number;
4342 size_t input_filename_length;
4343 static int basename_length;
4344 static int suffixed_basename_length;
4345 static const char *input_basename;
4346 static const char *input_suffix;
4347 #ifndef HOST_LACKS_INODE_NUMBERS
4348 static struct stat input_stat;
4350 static int input_stat_set;
4352 /* The compiler used to process the current input file. */
4353 static struct compiler *input_file_compiler;
4355 /* These are variables used within do_spec and do_spec_1. */
4357 /* Nonzero if an arg has been started and not yet terminated
4358 (with space, tab or newline). */
4359 static int arg_going;
4361 /* Nonzero means %d or %g has been seen; the next arg to be terminated
4362 is a temporary file name. */
4363 static int delete_this_arg;
4365 /* Nonzero means %w has been seen; the next arg to be terminated
4366 is the output file name of this compilation. */
4367 static int this_is_output_file;
4369 /* Nonzero means %s has been seen; the next arg to be terminated
4370 is the name of a library file and we should try the standard
4371 search dirs for it. */
4372 static int this_is_library_file;
4374 /* Nonzero means that the input of this command is coming from a pipe. */
4375 static int input_from_pipe;
4377 /* Nonnull means substitute this for any suffix when outputting a switches
4379 static const char *suffix_subst;
4381 /* If there is an argument being accumulated, terminate it and store it. */
4384 end_going_arg (void)
4390 obstack_1grow (&obstack, 0);
4391 string = XOBFINISH (&obstack, const char *);
4392 if (this_is_library_file)
4393 string = find_file (string);
4394 store_arg (string, delete_this_arg, this_is_output_file);
4395 if (this_is_output_file)
4396 outfiles[input_file_number] = string;
4401 /* Process the spec SPEC and run the commands specified therein.
4402 Returns 0 if the spec is successfully processed; -1 if failed. */
4405 do_spec (const char *spec)
4409 value = do_spec_2 (spec);
4411 /* Force out any unfinished command.
4412 If -pipe, this forces out the last command if it ended in `|'. */
4415 if (argbuf_index > 0 && !strcmp (argbuf[argbuf_index - 1], "|"))
4418 set_collect_gcc_options ();
4420 if (argbuf_index > 0)
4428 do_spec_2 (const char *spec)
4434 delete_this_arg = 0;
4435 this_is_output_file = 0;
4436 this_is_library_file = 0;
4437 input_from_pipe = 0;
4438 suffix_subst = NULL;
4440 result = do_spec_1 (spec, 0, NULL);
4448 /* Process the given spec string and add any new options to the end
4449 of the switches/n_switches array. */
4452 do_option_spec (const char *name, const char *spec)
4454 unsigned int i, value_count, value_len;
4455 const char *p, *q, *value;
4456 char *tmp_spec, *tmp_spec_p;
4458 if (configure_default_options[0].name == NULL)
4461 for (i = 0; i < ARRAY_SIZE (configure_default_options); i++)
4462 if (strcmp (configure_default_options[i].name, name) == 0)
4464 if (i == ARRAY_SIZE (configure_default_options))
4467 value = configure_default_options[i].value;
4468 value_len = strlen (value);
4470 /* Compute the size of the final spec. */
4473 while ((p = strstr (p, "%(VALUE)")) != NULL)
4479 /* Replace each %(VALUE) by the specified value. */
4480 tmp_spec = alloca (strlen (spec) + 1
4481 + value_count * (value_len - strlen ("%(VALUE)")));
4482 tmp_spec_p = tmp_spec;
4484 while ((p = strstr (q, "%(VALUE)")) != NULL)
4486 memcpy (tmp_spec_p, q, p - q);
4487 tmp_spec_p = tmp_spec_p + (p - q);
4488 memcpy (tmp_spec_p, value, value_len);
4489 tmp_spec_p += value_len;
4490 q = p + strlen ("%(VALUE)");
4492 strcpy (tmp_spec_p, q);
4494 do_self_spec (tmp_spec);
4497 /* Process the given spec string and add any new options to the end
4498 of the switches/n_switches array. */
4501 do_self_spec (const char *spec)
4504 do_spec_1 (" ", 0, NULL);
4506 if (argbuf_index > 0)
4511 n_switches += argbuf_index;
4512 switches = xrealloc (switches,
4513 sizeof (struct switchstr) * (n_switches + 1));
4515 switches[n_switches] = switches[first];
4516 for (i = 0; i < argbuf_index; i++)
4518 struct switchstr *sw;
4520 /* Each switch should start with '-'. */
4521 if (argbuf[i][0] != '-')
4522 fatal ("switch '%s' does not start with '-'", argbuf[i]);
4524 sw = &switches[i + first];
4525 sw->part1 = &argbuf[i][1];
4527 sw->live_cond = SWITCH_OK;
4534 /* Callback for processing %D and %I specs. */
4536 struct spec_path_info {
4541 bool separate_options;
4545 spec_path (char *path, void *data)
4547 struct spec_path_info *info = data;
4551 if (info->omit_relative && !IS_ABSOLUTE_PATH (path))
4554 if (info->append_len != 0)
4556 len = strlen (path);
4557 memcpy (path + len, info->append, info->append_len + 1);
4560 if (!is_directory (path, true))
4563 do_spec_1 (info->option, 1, NULL);
4564 if (info->separate_options)
4565 do_spec_1 (" ", 0, NULL);
4567 if (info->append_len == 0)
4569 len = strlen (path);
4570 save = path[len - 1];
4571 if (IS_DIR_SEPARATOR (path[len - 1]))
4572 path[len - 1] = '\0';
4575 do_spec_1 (path, 1, NULL);
4576 do_spec_1 (" ", 0, NULL);
4578 /* Must not damage the original path. */
4579 if (info->append_len == 0)
4580 path[len - 1] = save;
4585 /* Process the sub-spec SPEC as a portion of a larger spec.
4586 This is like processing a whole spec except that we do
4587 not initialize at the beginning and we do not supply a
4588 newline by default at the end.
4589 INSWITCH nonzero means don't process %-sequences in SPEC;
4590 in this case, % is treated as an ordinary character.
4591 This is used while substituting switches.
4592 INSWITCH nonzero also causes SPC not to terminate an argument.
4594 Value is zero unless a line was finished
4595 and the command on that line reported an error. */
4598 do_spec_1 (const char *spec, int inswitch, const char *soft_matched_part)
4600 const char *p = spec;
4606 /* If substituting a switch, treat all chars like letters.
4607 Otherwise, NL, SPC, TAB and % are special. */
4608 switch (inswitch ? 'a' : c)
4613 if (argbuf_index > 0 && !strcmp (argbuf[argbuf_index - 1], "|"))
4615 /* A `|' before the newline means use a pipe here,
4616 but only if -pipe was specified.
4617 Otherwise, execute now and don't pass the `|' as an arg. */
4620 input_from_pipe = 1;
4627 set_collect_gcc_options ();
4629 if (argbuf_index > 0)
4635 /* Reinitialize for a new command, and for a new argument. */
4638 delete_this_arg = 0;
4639 this_is_output_file = 0;
4640 this_is_library_file = 0;
4641 input_from_pipe = 0;
4648 obstack_1grow (&obstack, c);
4656 /* Reinitialize for a new argument. */
4657 delete_this_arg = 0;
4658 this_is_output_file = 0;
4659 this_is_library_file = 0;
4666 fatal ("spec '%s' invalid", spec);
4669 obstack_grow (&obstack, input_basename, basename_length);
4674 obstack_grow (&obstack, input_basename, suffixed_basename_length);
4679 delete_this_arg = 2;
4682 /* Dump out the directories specified with LIBRARY_PATH,
4683 followed by the absolute directories
4684 that we search for startfiles. */
4687 struct spec_path_info info;
4690 info.append_len = 0;
4691 #ifdef RELATIVE_PREFIX_NOT_LINKDIR
4692 /* Used on systems which record the specified -L dirs
4693 and use them to search for dynamic linking.
4694 Relative directories always come from -B,
4695 and it is better not to use them for searching
4696 at run time. In particular, stage1 loses. */
4697 info.omit_relative = true;
4699 info.omit_relative = false;
4701 info.separate_options = false;
4703 for_each_path (&startfile_prefixes, true, 0, spec_path, &info);
4708 /* %efoo means report an error with `foo' as error message
4709 and don't execute any more commands for this file. */
4713 while (*p != 0 && *p != '\n')
4715 buf = alloca (p - q + 1);
4716 strncpy (buf, q, p - q);
4723 /* %nfoo means report a notice with `foo' on stderr. */
4727 while (*p != 0 && *p != '\n')
4729 buf = alloca (p - q + 1);
4730 strncpy (buf, q, p - q);
4732 notice ("%s\n", buf);
4742 /* If save_temps_flag is off, and the HOST_BIT_BUCKET is
4743 defined, and it is not a directory, and it is
4744 writable, use it. Otherwise, treat this like any
4745 other temporary file. */
4747 if ((!save_temps_flag)
4748 && (stat (HOST_BIT_BUCKET, &st) == 0) && (!S_ISDIR (st.st_mode))
4749 && (access (HOST_BIT_BUCKET, W_OK) == 0))
4751 obstack_grow (&obstack, HOST_BIT_BUCKET,
4752 strlen (HOST_BIT_BUCKET));
4753 delete_this_arg = 0;
4758 goto create_temp_file;
4762 obstack_1grow (&obstack, '-');
4763 delete_this_arg = 0;
4766 /* consume suffix */
4767 while (*p == '.' || ISALNUM ((unsigned char) *p))
4769 if (p[0] == '%' && p[1] == 'O')
4774 goto create_temp_file;
4778 /* consume suffix */
4779 while (*p == '.' || ISALNUM ((unsigned char) *p))
4781 if (p[0] == '%' && p[1] == 'O')
4786 goto create_temp_file;
4792 struct temp_name *t;
4794 const char *suffix = p;
4795 char *saved_suffix = NULL;
4797 while (*p == '.' || ISALNUM ((unsigned char) *p))
4799 suffix_length = p - suffix;
4800 if (p[0] == '%' && p[1] == 'O')
4803 /* We don't support extra suffix characters after %O. */
4804 if (*p == '.' || ISALNUM ((unsigned char) *p))
4805 fatal ("spec '%s' has invalid '%%0%c'", spec, *p);
4806 if (suffix_length == 0)
4807 suffix = TARGET_OBJECT_SUFFIX;
4811 = XNEWVEC (char, suffix_length
4812 + strlen (TARGET_OBJECT_SUFFIX));
4813 strncpy (saved_suffix, suffix, suffix_length);
4814 strcpy (saved_suffix + suffix_length,
4815 TARGET_OBJECT_SUFFIX);
4817 suffix_length += strlen (TARGET_OBJECT_SUFFIX);
4820 /* If the input_filename has the same suffix specified
4821 for the %g, %u, or %U, and -save-temps is specified,
4822 we could end up using that file as an intermediate
4823 thus clobbering the user's source file (.e.g.,
4824 gcc -save-temps foo.s would clobber foo.s with the
4825 output of cpp0). So check for this condition and
4826 generate a temp file as the intermediate. */
4828 if (save_temps_flag)
4832 temp_filename_length = basename_length + suffix_length;
4833 tmp = alloca (temp_filename_length + 1);
4834 strncpy (tmp, input_basename, basename_length);
4835 strncpy (tmp + basename_length, suffix, suffix_length);
4836 tmp[temp_filename_length] = '\0';
4837 temp_filename = tmp;
4838 if (strcmp (temp_filename, input_filename) != 0)
4840 #ifndef HOST_LACKS_INODE_NUMBERS
4841 struct stat st_temp;
4843 /* Note, set_input() resets input_stat_set to 0. */
4844 if (input_stat_set == 0)
4846 input_stat_set = stat (input_filename, &input_stat);
4847 if (input_stat_set >= 0)
4851 /* If we have the stat for the input_filename
4852 and we can do the stat for the temp_filename
4853 then the they could still refer to the same
4854 file if st_dev/st_ino's are the same. */
4855 if (input_stat_set != 1
4856 || stat (temp_filename, &st_temp) < 0
4857 || input_stat.st_dev != st_temp.st_dev
4858 || input_stat.st_ino != st_temp.st_ino)
4860 /* Just compare canonical pathnames. */
4861 char* input_realname = lrealpath (input_filename);
4862 char* temp_realname = lrealpath (temp_filename);
4863 bool files_differ = strcmp (input_realname, temp_realname);
4864 free (input_realname);
4865 free (temp_realname);
4869 temp_filename = save_string (temp_filename,
4870 temp_filename_length + 1);
4871 obstack_grow (&obstack, temp_filename,
4872 temp_filename_length);
4874 delete_this_arg = 0;
4880 /* See if we already have an association of %g/%u/%U and
4882 for (t = temp_names; t; t = t->next)
4883 if (t->length == suffix_length
4884 && strncmp (t->suffix, suffix, suffix_length) == 0
4885 && t->unique == (c == 'u' || c == 'U' || c == 'j'))
4888 /* Make a new association if needed. %u and %j
4890 if (t == 0 || c == 'u' || c == 'j')
4894 t = xmalloc (sizeof (struct temp_name));
4895 t->next = temp_names;
4898 t->length = suffix_length;
4901 t->suffix = saved_suffix;
4902 saved_suffix = NULL;
4905 t->suffix = save_string (suffix, suffix_length);
4906 t->unique = (c == 'u' || c == 'U' || c == 'j');
4907 temp_filename = make_temp_file (t->suffix);
4908 temp_filename_length = strlen (temp_filename);
4909 t->filename = temp_filename;
4910 t->filename_length = temp_filename_length;
4914 free (saved_suffix);
4916 obstack_grow (&obstack, t->filename, t->filename_length);
4917 delete_this_arg = 1;
4925 for (i = 0; (int) i < n_infiles; i++)
4926 if ((!infiles[i].language) || (infiles[i].language[0] != '*'))
4927 if (infiles[i].incompiler == input_file_compiler)
4929 store_arg (infiles[i].name, 0, 0);
4930 infiles[i].compiled = true;
4935 obstack_grow (&obstack, input_filename, input_filename_length);
4942 struct spec_path_info info;
4946 do_spec_1 ("-imultilib", 1, NULL);
4947 /* Make this a separate argument. */
4948 do_spec_1 (" ", 0, NULL);
4949 do_spec_1 (multilib_dir, 1, NULL);
4950 do_spec_1 (" ", 0, NULL);
4953 if (gcc_exec_prefix)
4955 do_spec_1 ("-iprefix", 1, NULL);
4956 /* Make this a separate argument. */
4957 do_spec_1 (" ", 0, NULL);
4958 do_spec_1 (gcc_exec_prefix, 1, NULL);
4959 do_spec_1 (" ", 0, NULL);
4962 if (target_system_root_changed ||
4963 (target_system_root && target_sysroot_hdrs_suffix))
4965 do_spec_1 ("-isysroot", 1, NULL);
4966 /* Make this a separate argument. */
4967 do_spec_1 (" ", 0, NULL);
4968 do_spec_1 (target_system_root, 1, NULL);
4969 if (target_sysroot_hdrs_suffix)
4970 do_spec_1 (target_sysroot_hdrs_suffix, 1, NULL);
4971 do_spec_1 (" ", 0, NULL);
4974 info.option = "-isystem";
4975 info.append = "include";
4976 info.append_len = strlen (info.append);
4977 info.omit_relative = false;
4978 info.separate_options = true;
4980 for_each_path (&include_prefixes, false, info.append_len,
4983 info.append = "include-fixed";
4984 if (*sysroot_hdrs_suffix_spec)
4985 info.append = concat (info.append, dir_separator_str,
4986 multilib_dir, NULL);
4987 info.append_len = strlen (info.append);
4988 for_each_path (&include_prefixes, false, info.append_len,
4995 int max = n_infiles;
4996 max += lang_specific_extra_outfiles;
4998 if (HAVE_GNU_LD && at_file_supplied)
5000 /* We are going to expand `%o' to `@FILE', where FILE
5001 is a newly-created temporary filename. The filenames
5002 that would usually be expanded in place of %o will be
5003 written to the temporary file. */
5005 char *temp_file = make_temp_file ("");
5008 int n_files, j, status;
5011 at_argument = concat ("@", temp_file, NULL);
5012 store_arg (at_argument, 0, 0);
5014 /* Convert OUTFILES into a form suitable for writeargv. */
5016 /* Determine how many are non-NULL. */
5017 for (n_files = 0, i = 0; i < max; i++)
5018 n_files += outfiles[i] != NULL;
5020 argv = alloca (sizeof (char *) * (n_files + 1));
5022 /* Copy the strings over. */
5023 for (i = 0, j = 0; i < max; i++)
5026 argv[j] = (char *) CONST_CAST (outfiles[i]);
5031 f = fopen (temp_file, "w");
5034 fatal ("could not open temporary response file %s",
5037 status = writeargv (argv, f);
5040 fatal ("could not write to temporary response file %s",
5043 status = fclose (f);
5046 fatal ("could not close temporary response file %s",
5049 record_temp_file (temp_file, !save_temps_flag, !save_temps_flag);
5052 for (i = 0; i < max; i++)
5054 store_arg (outfiles[i], 0, 0);
5059 obstack_grow (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX));
5064 this_is_library_file = 1;
5068 outfiles[input_file_number] = NULL;
5072 this_is_output_file = 1;
5077 int cur_index = argbuf_index;
5078 /* Handle the {...} following the %W. */
5080 fatal ("spec '%s' has invalid '%%W%c", spec, *p);
5081 p = handle_braces (p + 1);
5085 /* If any args were output, mark the last one for deletion
5087 if (argbuf_index != cur_index)
5088 record_temp_file (argbuf[argbuf_index - 1], 0, 1);
5092 /* %x{OPTION} records OPTION for %X to output. */
5098 /* Skip past the option value and make a copy. */
5100 fatal ("spec '%s' has invalid '%%x%c'", spec, *p);
5103 string = save_string (p1 + 1, p - p1 - 2);
5105 /* See if we already recorded this option. */
5106 for (i = 0; i < n_linker_options; i++)
5107 if (! strcmp (string, linker_options[i]))
5113 /* This option is new; add it. */
5114 add_linker_option (string, strlen (string));
5118 /* Dump out the options accumulated previously using %x. */
5120 for (i = 0; i < n_linker_options; i++)
5122 do_spec_1 (linker_options[i], 1, NULL);
5123 /* Make each accumulated option a separate argument. */
5124 do_spec_1 (" ", 0, NULL);
5128 /* Dump out the options accumulated previously using -Wa,. */
5130 for (i = 0; i < n_assembler_options; i++)
5132 do_spec_1 (assembler_options[i], 1, NULL);
5133 /* Make each accumulated option a separate argument. */
5134 do_spec_1 (" ", 0, NULL);
5138 /* Dump out the options accumulated previously using -Wp,. */
5140 for (i = 0; i < n_preprocessor_options; i++)
5142 do_spec_1 (preprocessor_options[i], 1, NULL);
5143 /* Make each accumulated option a separate argument. */
5144 do_spec_1 (" ", 0, NULL);
5148 /* Here are digits and numbers that just process
5149 a certain constant string as a spec. */
5152 value = do_spec_1 (cc1_spec, 0, NULL);
5158 value = do_spec_1 (cc1plus_spec, 0, NULL);
5164 value = do_spec_1 (asm_spec, 0, NULL);
5170 value = do_spec_1 (asm_final_spec, 0, NULL);
5177 const char *const spec
5178 = (input_file_compiler->cpp_spec
5179 ? input_file_compiler->cpp_spec
5181 value = do_spec_1 (spec, 0, NULL);
5188 value = do_spec_1 (endfile_spec, 0, NULL);
5194 value = do_spec_1 (link_spec, 0, NULL);
5200 value = do_spec_1 (lib_spec, 0, NULL);
5206 value = do_spec_1 (libgcc_spec, 0, NULL);
5212 /* We assume there is a directory
5213 separator at the end of this string. */
5214 if (target_system_root)
5216 obstack_grow (&obstack, target_system_root,
5217 strlen (target_system_root));
5218 if (target_sysroot_suffix)
5219 obstack_grow (&obstack, target_sysroot_suffix,
5220 strlen (target_sysroot_suffix));
5225 value = do_spec_1 (startfile_spec, 0, NULL);
5230 /* Here we define characters other than letters and digits. */
5233 p = handle_braces (p);
5239 p = handle_spec_function (p);
5245 obstack_1grow (&obstack, '%');
5252 while (p[len] && p[len] != ' ' && p[len] != '%')
5254 suffix_subst = save_string (p - 1, len + 1);
5259 /* Henceforth ignore the option(s) matching the pattern
5264 int have_wildcard = 0;
5267 while (p[len] && p[len] != ' ' && p[len] != '\t')
5270 if (p[len-1] == '*')
5273 for (i = 0; i < n_switches; i++)
5274 if (!strncmp (switches[i].part1, p, len - have_wildcard)
5275 && (have_wildcard || switches[i].part1[len] == '\0'))
5277 switches[i].live_cond = SWITCH_IGNORE;
5278 switches[i].validated = 1;
5286 if (soft_matched_part)
5288 do_spec_1 (soft_matched_part, 1, NULL);
5289 do_spec_1 (" ", 0, NULL);
5292 /* Catch the case where a spec string contains something like
5293 '%{foo:%*}'. i.e. there is no * in the pattern on the left
5294 hand side of the :. */
5295 error ("spec failure: '%%*' has not been initialized by pattern match");
5298 /* Process a string found as the value of a spec given by name.
5299 This feature allows individual machine descriptions
5300 to add and use their own specs.
5301 %[...] modifies -D options the way %P does;
5302 %(...) uses the spec unmodified. */
5304 error ("warning: use of obsolete %%[ operator in specs");
5307 const char *name = p;
5308 struct spec_list *sl;
5311 /* The string after the S/P is the name of a spec that is to be
5313 while (*p && *p != ')' && *p != ']')
5316 /* See if it's in the list. */
5317 for (len = p - name, sl = specs; sl; sl = sl->next)
5318 if (sl->name_len == len && !strncmp (sl->name, name, len))
5320 name = *(sl->ptr_spec);
5322 notice ("Processing spec %c%s%c, which is '%s'\n",
5323 c, sl->name, (c == '(') ? ')' : ']', name);
5332 value = do_spec_1 (name, 0, NULL);
5338 char *x = alloca (strlen (name) * 2 + 1);
5340 const char *y = name;
5343 /* Copy all of NAME into BUF, but put __ after
5344 every -D and at the end of each arg. */
5347 if (! strncmp (y, "-D", 2))
5358 && (*y == ' ' || *y == '\t' || *y == '='
5359 || *y == '}' || *y == 0))
5372 value = do_spec_1 (buf, 0, NULL);
5378 /* Discard the closing paren or bracket. */
5385 error ("spec failure: unrecognized spec option '%c'", c);
5391 /* Backslash: treat next character as ordinary. */
5396 /* Ordinary character: put it into the current argument. */
5397 obstack_1grow (&obstack, c);
5401 /* End of string. If we are processing a spec function, we need to
5402 end any pending argument. */
5403 if (processing_spec_function)
5409 /* Look up a spec function. */
5411 static const struct spec_function *
5412 lookup_spec_function (const char *name)
5414 const struct spec_function *sf;
5416 for (sf = static_spec_functions; sf->name != NULL; sf++)
5417 if (strcmp (sf->name, name) == 0)
5423 /* Evaluate a spec function. */
5426 eval_spec_function (const char *func, const char *args)
5428 const struct spec_function *sf;
5429 const char *funcval;
5431 /* Saved spec processing context. */
5432 int save_argbuf_index;
5433 int save_argbuf_length;
5434 const char **save_argbuf;
5437 int save_delete_this_arg;
5438 int save_this_is_output_file;
5439 int save_this_is_library_file;
5440 int save_input_from_pipe;
5441 const char *save_suffix_subst;
5444 sf = lookup_spec_function (func);
5446 fatal ("unknown spec function '%s'", func);
5448 /* Push the spec processing context. */
5449 save_argbuf_index = argbuf_index;
5450 save_argbuf_length = argbuf_length;
5451 save_argbuf = argbuf;
5453 save_arg_going = arg_going;
5454 save_delete_this_arg = delete_this_arg;
5455 save_this_is_output_file = this_is_output_file;
5456 save_this_is_library_file = this_is_library_file;
5457 save_input_from_pipe = input_from_pipe;
5458 save_suffix_subst = suffix_subst;
5460 /* Create a new spec processing context, and build the function
5464 if (do_spec_2 (args) < 0)
5465 fatal ("error in args to spec function '%s'", func);
5467 /* argbuf_index is an index for the next argument to be inserted, and
5468 so contains the count of the args already inserted. */
5470 funcval = (*sf->func) (argbuf_index, argbuf);
5472 /* Pop the spec processing context. */
5473 argbuf_index = save_argbuf_index;
5474 argbuf_length = save_argbuf_length;
5476 argbuf = save_argbuf;
5478 arg_going = save_arg_going;
5479 delete_this_arg = save_delete_this_arg;
5480 this_is_output_file = save_this_is_output_file;
5481 this_is_library_file = save_this_is_library_file;
5482 input_from_pipe = save_input_from_pipe;
5483 suffix_subst = save_suffix_subst;
5488 /* Handle a spec function call of the form:
5492 ARGS is processed as a spec in a separate context and split into an
5493 argument vector in the normal fashion. The function returns a string
5494 containing a spec which we then process in the caller's context, or
5495 NULL if no processing is required. */
5498 handle_spec_function (const char *p)
5501 const char *endp, *funcval;
5504 processing_spec_function++;
5506 /* Get the function name. */
5507 for (endp = p; *endp != '\0'; endp++)
5509 if (*endp == '(') /* ) */
5511 /* Only allow [A-Za-z0-9], -, and _ in function names. */
5512 if (!ISALNUM (*endp) && !(*endp == '-' || *endp == '_'))
5513 fatal ("malformed spec function name");
5515 if (*endp != '(') /* ) */
5516 fatal ("no arguments for spec function");
5517 func = save_string (p, endp - p);
5520 /* Get the arguments. */
5521 for (count = 0; *endp != '\0'; endp++)
5530 else if (*endp == '(') /* ) */
5535 fatal ("malformed spec function arguments");
5536 args = save_string (p, endp - p);
5539 /* p now points to just past the end of the spec function expression. */
5541 funcval = eval_spec_function (func, args);
5542 if (funcval != NULL && do_spec_1 (funcval, 0, NULL) < 0)
5548 processing_spec_function--;
5553 /* Inline subroutine of handle_braces. Returns true if the current
5554 input suffix matches the atom bracketed by ATOM and END_ATOM. */
5556 input_suffix_matches (const char *atom, const char *end_atom)
5558 return (input_suffix
5559 && !strncmp (input_suffix, atom, end_atom - atom)
5560 && input_suffix[end_atom - atom] == '\0');
5563 /* Subroutine of handle_braces. Returns true if the current
5564 input file's spec name matches the atom bracketed by ATOM and END_ATOM. */
5566 input_spec_matches (const char *atom, const char *end_atom)
5568 return (input_file_compiler
5569 && input_file_compiler->suffix
5570 && input_file_compiler->suffix[0] != '\0'
5571 && !strncmp (input_file_compiler->suffix + 1, atom,
5573 && input_file_compiler->suffix[end_atom - atom + 1] == '\0');
5576 /* Subroutine of handle_braces. Returns true if a switch
5577 matching the atom bracketed by ATOM and END_ATOM appeared on the
5580 switch_matches (const char *atom, const char *end_atom, int starred)
5583 int len = end_atom - atom;
5584 int plen = starred ? len : -1;
5586 for (i = 0; i < n_switches; i++)
5587 if (!strncmp (switches[i].part1, atom, len)
5588 && (starred || switches[i].part1[len] == '\0')
5589 && check_live_switch (i, plen))
5595 /* Inline subroutine of handle_braces. Mark all of the switches which
5596 match ATOM (extends to END_ATOM; STARRED indicates whether there
5597 was a star after the atom) for later processing. */
5599 mark_matching_switches (const char *atom, const char *end_atom, int starred)
5602 int len = end_atom - atom;
5603 int plen = starred ? len : -1;
5605 for (i = 0; i < n_switches; i++)
5606 if (!strncmp (switches[i].part1, atom, len)
5607 && (starred || switches[i].part1[len] == '\0')
5608 && check_live_switch (i, plen))
5609 switches[i].ordering = 1;
5612 /* Inline subroutine of handle_braces. Process all the currently
5613 marked switches through give_switch, and clear the marks. */
5615 process_marked_switches (void)
5619 for (i = 0; i < n_switches; i++)
5620 if (switches[i].ordering == 1)
5622 switches[i].ordering = 0;
5627 /* Handle a %{ ... } construct. P points just inside the leading {.
5628 Returns a pointer one past the end of the brace block, or 0
5629 if we call do_spec_1 and that returns -1. */
5632 handle_braces (const char *p)
5634 const char *atom, *end_atom;
5635 const char *d_atom = NULL, *d_end_atom = NULL;
5636 const char *orig = p;
5644 bool a_must_be_last = false;
5645 bool ordered_set = false;
5646 bool disjunct_set = false;
5647 bool disj_matched = false;
5648 bool disj_starred = true;
5649 bool n_way_choice = false;
5650 bool n_way_matched = false;
5652 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
5659 /* Scan one "atom" (S in the description above of %{}, possibly
5660 with '!', '.', '@', ',', or '*' modifiers). */
5662 a_is_suffix = false;
5663 a_is_starred = false;
5664 a_is_negated = false;
5665 a_is_spectype = false;
5669 p++, a_is_negated = true;
5673 p++, a_is_suffix = true;
5675 p++, a_is_spectype = true;
5678 while (ISIDNUM(*p) || *p == '-' || *p == '+' || *p == '='
5679 || *p == ',' || *p == '.' || *p == '@')
5684 p++, a_is_starred = 1;
5690 /* Substitute the switch(es) indicated by the current atom. */
5692 if (disjunct_set || n_way_choice || a_is_negated || a_is_suffix
5693 || a_is_spectype || atom == end_atom)
5696 mark_matching_switches (atom, end_atom, a_is_starred);
5699 process_marked_switches ();
5703 /* Substitute some text if the current atom appears as a switch
5705 disjunct_set = true;
5709 if (atom == end_atom)
5711 if (!n_way_choice || disj_matched || *p == '|'
5712 || a_is_negated || a_is_suffix || a_is_spectype
5716 /* An empty term may appear as the last choice of an
5717 N-way choice set; it means "otherwise". */
5718 a_must_be_last = true;
5719 disj_matched = !n_way_matched;
5720 disj_starred = false;
5724 if ((a_is_suffix || a_is_spectype) && a_is_starred)
5728 disj_starred = false;
5730 /* Don't bother testing this atom if we already have a
5732 if (!disj_matched && !n_way_matched)
5735 a_matched = input_suffix_matches (atom, end_atom);
5736 else if (a_is_spectype)
5737 a_matched = input_spec_matches (atom, end_atom);
5739 a_matched = switch_matches (atom, end_atom, a_is_starred);
5741 if (a_matched != a_is_negated)
5743 disj_matched = true;
5745 d_end_atom = end_atom;
5752 /* Found the body, that is, the text to substitute if the
5753 current disjunction matches. */
5754 p = process_brace_body (p + 1, d_atom, d_end_atom, disj_starred,
5755 disj_matched && !n_way_matched);
5759 /* If we have an N-way choice, reset state for the next
5763 n_way_choice = true;
5764 n_way_matched |= disj_matched;
5765 disj_matched = false;
5766 disj_starred = true;
5767 d_atom = d_end_atom = NULL;
5776 while (*p++ != '}');
5781 fatal ("braced spec '%s' is invalid at '%c'", orig, *p);
5786 /* Subroutine of handle_braces. Scan and process a brace substitution body
5787 (X in the description of %{} syntax). P points one past the colon;
5788 ATOM and END_ATOM bracket the first atom which was found to be true
5789 (present) in the current disjunction; STARRED indicates whether all
5790 the atoms in the current disjunction were starred (for syntax validation);
5791 MATCHED indicates whether the disjunction matched or not, and therefore
5792 whether or not the body is to be processed through do_spec_1 or just
5793 skipped. Returns a pointer to the closing } or ;, or 0 if do_spec_1
5797 process_brace_body (const char *p, const char *atom, const char *end_atom,
5798 int starred, int matched)
5800 const char *body, *end_body;
5801 unsigned int nesting_level;
5802 bool have_subst = false;
5804 /* Locate the closing } or ;, honoring nested braces.
5805 Trim trailing whitespace. */
5814 if (!--nesting_level)
5817 else if (*p == ';' && nesting_level == 1)
5819 else if (*p == '%' && p[1] == '*' && nesting_level == 1)
5821 else if (*p == '\0')
5827 while (end_body[-1] == ' ' || end_body[-1] == '\t')
5830 if (have_subst && !starred)
5835 /* Copy the substitution body to permanent storage and execute it.
5836 If have_subst is false, this is a simple matter of running the
5837 body through do_spec_1... */
5838 char *string = save_string (body, end_body - body);
5841 if (do_spec_1 (string, 0, NULL) < 0)
5846 /* ... but if have_subst is true, we have to process the
5847 body once for each matching switch, with %* set to the
5848 variant part of the switch. */
5849 unsigned int hard_match_len = end_atom - atom;
5852 for (i = 0; i < n_switches; i++)
5853 if (!strncmp (switches[i].part1, atom, hard_match_len)
5854 && check_live_switch (i, hard_match_len))
5856 if (do_spec_1 (string, 0,
5857 &switches[i].part1[hard_match_len]) < 0)
5859 /* Pass any arguments this switch has. */
5861 suffix_subst = NULL;
5869 fatal ("braced spec body '%s' is invalid", body);
5872 /* Return 0 iff switch number SWITCHNUM is obsoleted by a later switch
5873 on the command line. PREFIX_LENGTH is the length of XXX in an {XXX*}
5874 spec, or -1 if either exact match or %* is used.
5876 A -O switch is obsoleted by a later -O switch. A -f, -m, or -W switch
5877 whose value does not begin with "no-" is obsoleted by the same value
5878 with the "no-", similarly for a switch with the "no-" prefix. */
5881 check_live_switch (int switchnum, int prefix_length)
5883 const char *name = switches[switchnum].part1;
5886 /* In the common case of {<at-most-one-letter>*}, a negating
5887 switch would always match, so ignore that case. We will just
5888 send the conflicting switches to the compiler phase. */
5889 if (prefix_length >= 0 && prefix_length <= 1)
5892 /* If we already processed this switch and determined if it was
5893 live or not, return our past determination. */
5894 if (switches[switchnum].live_cond != 0)
5895 return switches[switchnum].live_cond > 0;
5897 /* Now search for duplicate in a manner that depends on the name. */
5901 for (i = switchnum + 1; i < n_switches; i++)
5902 if (switches[i].part1[0] == 'O')
5904 switches[switchnum].validated = 1;
5905 switches[switchnum].live_cond = SWITCH_FALSE;
5910 case 'W': case 'f': case 'm':
5911 if (! strncmp (name + 1, "no-", 3))
5913 /* We have Xno-YYY, search for XYYY. */
5914 for (i = switchnum + 1; i < n_switches; i++)
5915 if (switches[i].part1[0] == name[0]
5916 && ! strcmp (&switches[i].part1[1], &name[4]))
5918 switches[switchnum].validated = 1;
5919 switches[switchnum].live_cond = SWITCH_FALSE;
5925 /* We have XYYY, search for Xno-YYY. */
5926 for (i = switchnum + 1; i < n_switches; i++)
5927 if (switches[i].part1[0] == name[0]
5928 && switches[i].part1[1] == 'n'
5929 && switches[i].part1[2] == 'o'
5930 && switches[i].part1[3] == '-'
5931 && !strcmp (&switches[i].part1[4], &name[1]))
5933 switches[switchnum].validated = 1;
5934 switches[switchnum].live_cond = SWITCH_FALSE;
5941 /* Otherwise the switch is live. */
5942 switches[switchnum].live_cond = SWITCH_LIVE;
5946 /* Pass a switch to the current accumulating command
5947 in the same form that we received it.
5948 SWITCHNUM identifies the switch; it is an index into
5949 the vector of switches gcc received, which is `switches'.
5950 This cannot fail since it never finishes a command line.
5952 If OMIT_FIRST_WORD is nonzero, then we omit .part1 of the argument. */
5955 give_switch (int switchnum, int omit_first_word)
5957 if (switches[switchnum].live_cond == SWITCH_IGNORE)
5960 if (!omit_first_word)
5962 do_spec_1 ("-", 0, NULL);
5963 do_spec_1 (switches[switchnum].part1, 1, NULL);
5966 if (switches[switchnum].args != 0)
5969 for (p = switches[switchnum].args; *p; p++)
5971 const char *arg = *p;
5973 do_spec_1 (" ", 0, NULL);
5976 unsigned length = strlen (arg);
5979 while (length-- && !IS_DIR_SEPARATOR (arg[length]))
5980 if (arg[length] == '.')
5982 ((char *)CONST_CAST(arg))[length] = 0;
5986 do_spec_1 (arg, 1, NULL);
5988 ((char *)CONST_CAST(arg))[length] = '.';
5989 do_spec_1 (suffix_subst, 1, NULL);
5992 do_spec_1 (arg, 1, NULL);
5996 do_spec_1 (" ", 0, NULL);
5997 switches[switchnum].validated = 1;
6000 /* Search for a file named NAME trying various prefixes including the
6001 user's -B prefix and some standard ones.
6002 Return the absolute file name found. If nothing is found, return NAME. */
6005 find_file (const char *name)
6007 char *newname = find_a_file (&startfile_prefixes, name, R_OK, true);
6008 return newname ? newname : name;
6011 /* Determine whether a directory exists. If LINKER, return 0 for
6012 certain fixed names not needed by the linker. */
6015 is_directory (const char *path1, bool linker)
6022 /* Ensure the string ends with "/.". The resulting path will be a
6023 directory even if the given path is a symbolic link. */
6024 len1 = strlen (path1);
6025 path = alloca (3 + len1);
6026 memcpy (path, path1, len1);
6028 if (!IS_DIR_SEPARATOR (cp[-1]))
6029 *cp++ = DIR_SEPARATOR;
6033 /* Exclude directories that the linker is known to search. */
6035 && IS_DIR_SEPARATOR (path[0])
6037 && strncmp (path + 1, "lib", 3) == 0)
6039 && strncmp (path + 1, "usr", 3) == 0
6040 && IS_DIR_SEPARATOR (path[4])
6041 && strncmp (path + 5, "lib", 3) == 0)))
6044 return (stat (path, &st) >= 0 && S_ISDIR (st.st_mode));
6047 /* Set up the various global variables to indicate that we're processing
6048 the input file named FILENAME. */
6051 set_input (const char *filename)
6055 input_filename = filename;
6056 input_filename_length = strlen (input_filename);
6058 input_basename = input_filename;
6059 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
6060 /* Skip drive name so 'x:foo' is handled properly. */
6061 if (input_basename[1] == ':')
6062 input_basename += 2;
6064 for (p = input_basename; *p; p++)
6065 if (IS_DIR_SEPARATOR (*p))
6066 input_basename = p + 1;
6068 /* Find a suffix starting with the last period,
6069 and set basename_length to exclude that suffix. */
6070 basename_length = strlen (input_basename);
6071 suffixed_basename_length = basename_length;
6072 p = input_basename + basename_length;
6073 while (p != input_basename && *p != '.')
6075 if (*p == '.' && p != input_basename)
6077 basename_length = p - input_basename;
6078 input_suffix = p + 1;
6083 /* If a spec for 'g', 'u', or 'U' is seen with -save-temps then
6084 we will need to do a stat on the input_filename. The
6085 INPUT_STAT_SET signals that the stat is needed. */
6089 /* On fatal signals, delete all the temporary files. */
6092 fatal_error (int signum)
6094 signal (signum, SIG_DFL);
6095 delete_failure_queue ();
6096 delete_temp_files ();
6097 /* Get the same signal again, this time not handled,
6098 so its normal effect occurs. */
6099 kill (getpid (), signum);
6102 extern int main (int, char **);
6105 main (int argc, char **argv)
6109 int linker_was_run = 0;
6110 int lang_n_infiles = 0;
6111 int num_linker_inputs = 0;
6112 char *explicit_link_files;
6115 struct user_specs *uptr;
6116 char **old_argv = argv;
6118 p = argv[0] + strlen (argv[0]);
6119 while (p != argv[0] && !IS_DIR_SEPARATOR (p[-1]))
6123 xmalloc_set_program_name (programname);
6125 expandargv (&argc, &argv);
6127 /* Determine if any expansions were made. */
6128 if (argv != old_argv)
6129 at_file_supplied = true;
6131 prune_options (&argc, &argv);
6133 #ifdef GCC_DRIVER_HOST_INITIALIZATION
6134 /* Perform host dependent initialization when needed. */
6135 GCC_DRIVER_HOST_INITIALIZATION;
6138 /* Unlock the stdio streams. */
6139 unlock_std_streams ();
6141 gcc_init_libintl ();
6143 if (signal (SIGINT, SIG_IGN) != SIG_IGN)
6144 signal (SIGINT, fatal_error);
6146 if (signal (SIGHUP, SIG_IGN) != SIG_IGN)
6147 signal (SIGHUP, fatal_error);
6149 if (signal (SIGTERM, SIG_IGN) != SIG_IGN)
6150 signal (SIGTERM, fatal_error);
6152 if (signal (SIGPIPE, SIG_IGN) != SIG_IGN)
6153 signal (SIGPIPE, fatal_error);
6156 /* We *MUST* set SIGCHLD to SIG_DFL so that the wait4() call will
6157 receive the signal. A different setting is inheritable */
6158 signal (SIGCHLD, SIG_DFL);
6161 /* Allocate the argument vector. */
6164 obstack_init (&obstack);
6166 /* Build multilib_select, et. al from the separate lines that make up each
6167 multilib selection. */
6169 const char *const *q = multilib_raw;
6172 obstack_init (&multilib_obstack);
6173 while ((p = *q++) != (char *) 0)
6174 obstack_grow (&multilib_obstack, p, strlen (p));
6176 obstack_1grow (&multilib_obstack, 0);
6177 multilib_select = XOBFINISH (&multilib_obstack, const char *);
6179 q = multilib_matches_raw;
6180 while ((p = *q++) != (char *) 0)
6181 obstack_grow (&multilib_obstack, p, strlen (p));
6183 obstack_1grow (&multilib_obstack, 0);
6184 multilib_matches = XOBFINISH (&multilib_obstack, const char *);
6186 q = multilib_exclusions_raw;
6187 while ((p = *q++) != (char *) 0)
6188 obstack_grow (&multilib_obstack, p, strlen (p));
6190 obstack_1grow (&multilib_obstack, 0);
6191 multilib_exclusions = XOBFINISH (&multilib_obstack, const char *);
6194 for (i = 0; i < ARRAY_SIZE (multilib_defaults_raw); i++)
6197 obstack_1grow (&multilib_obstack, ' ');
6198 obstack_grow (&multilib_obstack,
6199 multilib_defaults_raw[i],
6200 strlen (multilib_defaults_raw[i]));
6204 obstack_1grow (&multilib_obstack, 0);
6205 multilib_defaults = XOBFINISH (&multilib_obstack, const char *);
6208 /* Set up to remember the pathname of gcc and any options
6209 needed for collect. We use argv[0] instead of programname because
6210 we need the complete pathname. */
6211 obstack_init (&collect_obstack);
6212 obstack_grow (&collect_obstack, "COLLECT_GCC=", sizeof ("COLLECT_GCC=") - 1);
6213 obstack_grow (&collect_obstack, argv[0], strlen (argv[0]) + 1);
6214 putenv (XOBFINISH (&collect_obstack, char *));
6216 #ifdef INIT_ENVIRONMENT
6217 /* Set up any other necessary machine specific environment variables. */
6218 putenv (INIT_ENVIRONMENT);
6221 /* Make a table of what switches there are (switches, n_switches).
6222 Make a table of specified input files (infiles, n_infiles).
6223 Decode switches that are handled locally. */
6225 process_command (argc, (const char **) argv);
6227 /* Initialize the vector of specs to just the default.
6228 This means one element containing 0s, as a terminator. */
6230 compilers = xmalloc (sizeof default_compilers);
6231 memcpy (compilers, default_compilers, sizeof default_compilers);
6232 n_compilers = n_default_compilers;
6234 /* Read specs from a file if there is one. */
6236 machine_suffix = concat (spec_machine, dir_separator_str,
6237 spec_version, dir_separator_str, NULL);
6238 just_machine_suffix = concat (spec_machine, dir_separator_str, NULL);
6240 specs_file = find_a_file (&startfile_prefixes, "specs", R_OK, true);
6241 /* Read the specs file unless it is a default one. */
6242 if (specs_file != 0 && strcmp (specs_file, "specs"))
6243 read_specs (specs_file, TRUE);
6247 /* We need to check standard_exec_prefix/just_machine_suffix/specs
6248 for any override of as, ld and libraries. */
6249 specs_file = alloca (strlen (standard_exec_prefix)
6250 + strlen (just_machine_suffix) + sizeof ("specs"));
6252 strcpy (specs_file, standard_exec_prefix);
6253 strcat (specs_file, just_machine_suffix);
6254 strcat (specs_file, "specs");
6255 if (access (specs_file, R_OK) == 0)
6256 read_specs (specs_file, TRUE);
6258 /* Process any configure-time defaults specified for the command line
6259 options, via OPTION_DEFAULT_SPECS. */
6260 for (i = 0; i < ARRAY_SIZE (option_default_specs); i++)
6261 do_option_spec (option_default_specs[i].name,
6262 option_default_specs[i].spec);
6264 /* Process DRIVER_SELF_SPECS, adding any new options to the end
6265 of the command line. */
6267 for (i = 0; i < ARRAY_SIZE (driver_self_specs); i++)
6268 do_self_spec (driver_self_specs[i]);
6270 /* If not cross-compiling, look for executables in the standard
6272 if (*cross_compile == '0')
6274 if (*md_exec_prefix)
6276 add_prefix (&exec_prefixes, md_exec_prefix, "GCC",
6277 PREFIX_PRIORITY_LAST, 0, 0);
6281 /* Process sysroot_suffix_spec. */
6282 if (*sysroot_suffix_spec != 0
6283 && do_spec_2 (sysroot_suffix_spec) == 0)
6285 if (argbuf_index > 1)
6286 error ("spec failure: more than one arg to SYSROOT_SUFFIX_SPEC");
6287 else if (argbuf_index == 1)
6288 target_sysroot_suffix = xstrdup (argbuf[argbuf_index -1]);
6291 #ifdef HAVE_LD_SYSROOT
6292 /* Pass the --sysroot option to the linker, if it supports that. If
6293 there is a sysroot_suffix_spec, it has already been processed by
6294 this point, so target_system_root really is the system root we
6296 if (target_system_root)
6298 obstack_grow (&obstack, "%(sysroot_spec) ", strlen ("%(sysroot_spec) "));
6299 obstack_grow0 (&obstack, link_spec, strlen (link_spec));
6300 set_spec ("link", XOBFINISH (&obstack, const char *));
6304 /* Process sysroot_hdrs_suffix_spec. */
6305 if (*sysroot_hdrs_suffix_spec != 0
6306 && do_spec_2 (sysroot_hdrs_suffix_spec) == 0)
6308 if (argbuf_index > 1)
6309 error ("spec failure: more than one arg to SYSROOT_HEADERS_SUFFIX_SPEC");
6310 else if (argbuf_index == 1)
6311 target_sysroot_hdrs_suffix = xstrdup (argbuf[argbuf_index -1]);
6314 /* Look for startfiles in the standard places. */
6315 if (*startfile_prefix_spec != 0
6316 && do_spec_2 (startfile_prefix_spec) == 0
6317 && do_spec_1 (" ", 0, NULL) == 0)
6320 for (ndx = 0; ndx < argbuf_index; ndx++)
6321 add_sysrooted_prefix (&startfile_prefixes, argbuf[ndx], "BINUTILS",
6322 PREFIX_PRIORITY_LAST, 0, 1);
6324 /* We should eventually get rid of all these and stick to
6325 startfile_prefix_spec exclusively. */
6326 else if (*cross_compile == '0' || target_system_root)
6328 if (*md_startfile_prefix)
6329 add_sysrooted_prefix (&startfile_prefixes, md_startfile_prefix,
6330 "GCC", PREFIX_PRIORITY_LAST, 0, 1);
6332 if (*md_startfile_prefix_1)
6333 add_sysrooted_prefix (&startfile_prefixes, md_startfile_prefix_1,
6334 "GCC", PREFIX_PRIORITY_LAST, 0, 1);
6336 /* If standard_startfile_prefix is relative, base it on
6337 standard_exec_prefix. This lets us move the installed tree
6338 as a unit. If GCC_EXEC_PREFIX is defined, base
6339 standard_startfile_prefix on that as well.
6341 If the prefix is relative, only search it for native compilers;
6342 otherwise we will search a directory containing host libraries. */
6343 if (IS_ABSOLUTE_PATH (standard_startfile_prefix))
6344 add_sysrooted_prefix (&startfile_prefixes,
6345 standard_startfile_prefix, "BINUTILS",
6346 PREFIX_PRIORITY_LAST, 0, 1);
6347 else if (*cross_compile == '0')
6349 add_prefix (&startfile_prefixes,
6350 concat (gcc_exec_prefix
6351 ? gcc_exec_prefix : standard_exec_prefix,
6353 standard_startfile_prefix, NULL),
6354 NULL, PREFIX_PRIORITY_LAST, 0, 1);
6357 /* Sysrooted prefixes are relocated because target_system_root is
6358 also relocated by gcc_exec_prefix. */
6359 if (*standard_startfile_prefix_1)
6360 add_sysrooted_prefix (&startfile_prefixes,
6361 standard_startfile_prefix_1, "BINUTILS",
6362 PREFIX_PRIORITY_LAST, 0, 1);
6363 if (*standard_startfile_prefix_2)
6364 add_sysrooted_prefix (&startfile_prefixes,
6365 standard_startfile_prefix_2, "BINUTILS",
6366 PREFIX_PRIORITY_LAST, 0, 1);
6369 /* Process any user specified specs in the order given on the command
6371 for (uptr = user_specs_head; uptr; uptr = uptr->next)
6373 char *filename = find_a_file (&startfile_prefixes, uptr->filename,
6375 read_specs (filename ? filename : uptr->filename, FALSE);
6378 /* If we have a GCC_EXEC_PREFIX envvar, modify it for cpp's sake. */
6379 if (gcc_exec_prefix)
6380 gcc_exec_prefix = concat (gcc_exec_prefix, spec_machine, dir_separator_str,
6381 spec_version, dir_separator_str, NULL);
6383 /* Now we have the specs.
6384 Set the `valid' bits for switches that match anything in any spec. */
6386 validate_all_switches ();
6388 /* Now that we have the switches and the specs, set
6389 the subdirectory based on the options. */
6390 set_multilib_dir ();
6392 /* Warn about any switches that no pass was interested in. */
6394 for (i = 0; (int) i < n_switches; i++)
6395 if (! switches[i].validated)
6396 error ("unrecognized option '-%s'", switches[i].part1);
6398 /* Obey some of the options. */
6400 if (print_search_dirs)
6402 printf (_("install: %s%s\n"),
6403 gcc_exec_prefix ? gcc_exec_prefix : standard_exec_prefix,
6404 gcc_exec_prefix ? "" : machine_suffix);
6405 printf (_("programs: %s\n"),
6406 build_search_list (&exec_prefixes, "", false, false));
6407 printf (_("libraries: %s\n"),
6408 build_search_list (&startfile_prefixes, "", false, true));
6412 if (print_file_name)
6414 printf ("%s\n", find_file (print_file_name));
6418 if (print_prog_name)
6420 char *newname = find_a_file (&exec_prefixes, print_prog_name, X_OK, 0);
6421 printf ("%s\n", (newname ? newname : print_prog_name));
6425 if (print_multi_lib)
6427 print_multilib_info ();
6431 if (print_multi_directory)
6433 if (multilib_dir == NULL)
6436 printf ("%s\n", multilib_dir);
6440 if (print_multi_os_directory)
6442 if (multilib_os_dir == NULL)
6445 printf ("%s\n", multilib_os_dir);
6449 if (print_sysroot_headers_suffix)
6451 if (*sysroot_hdrs_suffix_spec)
6453 printf("%s\n", (target_sysroot_hdrs_suffix
6454 ? target_sysroot_hdrs_suffix
6459 /* The error status indicates that only one set of fixed
6460 headers should be built. */
6461 fatal ("not configured with sysroot headers suffix");
6464 if (print_help_list)
6470 printf (_("\nFor bug reporting instructions, please see:\n"));
6471 printf ("%s.\n", bug_report_url);
6476 /* We do not exit here. Instead we have created a fake input file
6477 called 'help-dummy' which needs to be compiled, and we pass this
6478 on the various sub-processes, along with the --help switch. */
6486 notice ("Target: %s\n", spec_machine);
6487 notice ("Configured with: %s\n", configuration_arguments);
6489 #ifdef THREAD_MODEL_SPEC
6490 /* We could have defined THREAD_MODEL_SPEC to "%*" by default,
6491 but there's no point in doing all this processing just to get
6492 thread_model back. */
6493 obstack_init (&obstack);
6494 do_spec_1 (THREAD_MODEL_SPEC, 0, thread_model);
6495 obstack_1grow (&obstack, '\0');
6496 thrmod = XOBFINISH (&obstack, const char *);
6498 thrmod = thread_model;
6501 notice ("Thread model: %s\n", thrmod);
6503 /* compiler_version is truncated at the first space when initialized
6504 from version string, so truncate version_string at the first space
6505 before comparing. */
6506 for (n = 0; version_string[n]; n++)
6507 if (version_string[n] == ' ')
6510 if (! strncmp (version_string, compiler_version, n)
6511 && compiler_version[n] == 0)
6512 notice ("gcc version %s\n", version_string);
6514 notice ("gcc driver version %s executing gcc version %s\n",
6515 version_string, compiler_version);
6521 if (n_infiles == added_libraries)
6522 fatal ("no input files");
6524 /* Make a place to record the compiler output file names
6525 that correspond to the input files. */
6528 i += lang_specific_extra_outfiles;
6529 outfiles = XCNEWVEC (const char *, i);
6531 /* Record which files were specified explicitly as link input. */
6533 explicit_link_files = XCNEWVEC (char, n_infiles);
6536 combine_inputs = true;
6538 combine_inputs = false;
6540 for (i = 0; (int) i < n_infiles; i++)
6542 const char *name = infiles[i].name;
6543 struct compiler *compiler = lookup_compiler (name,
6545 infiles[i].language);
6547 if (compiler && !(compiler->combinable))
6548 combine_inputs = false;
6550 if (lang_n_infiles > 0 && compiler != input_file_compiler
6551 && infiles[i].language && infiles[i].language[0] != '*')
6552 infiles[i].incompiler = compiler;
6556 input_file_compiler = compiler;
6557 infiles[i].incompiler = compiler;
6561 /* Since there is no compiler for this input file, assume it is a
6563 explicit_link_files[i] = 1;
6564 infiles[i].incompiler = NULL;
6566 infiles[i].compiled = false;
6567 infiles[i].preprocessed = false;
6570 if (!combine_inputs && have_c && have_o && lang_n_infiles > 1)
6571 fatal ("cannot specify -o with -c or -S with multiple files");
6573 if (combine_flag && save_temps_flag)
6575 bool save_combine_inputs = combine_inputs;
6576 /* Must do a separate pre-processing pass for C & Objective-C files, to
6577 obtain individual .i files. */
6579 combine_inputs = false;
6580 for (i = 0; (int) i < n_infiles; i++)
6582 int this_file_error = 0;
6584 input_file_number = i;
6585 set_input (infiles[i].name);
6586 if (infiles[i].incompiler
6587 && (infiles[i].incompiler)->needs_preprocessing)
6588 input_file_compiler = infiles[i].incompiler;
6592 if (input_file_compiler)
6594 if (input_file_compiler->spec[0] == '#')
6596 error ("%s: %s compiler not installed on this system",
6597 input_filename, &input_file_compiler->spec[1]);
6598 this_file_error = 1;
6602 value = do_spec (input_file_compiler->spec);
6603 infiles[i].preprocessed = true;
6604 if (!have_o_argbuf_index)
6605 fatal ("spec '%s' is invalid", input_file_compiler->spec);
6606 infiles[i].name = argbuf[have_o_argbuf_index];
6607 infiles[i].incompiler
6608 = lookup_compiler (infiles[i].name,
6609 strlen (infiles[i].name),
6610 infiles[i].language);
6613 this_file_error = 1;
6617 if (this_file_error)
6619 delete_failure_queue ();
6623 clear_failure_queue ();
6625 combine_inputs = save_combine_inputs;
6628 for (i = 0; (int) i < n_infiles; i++)
6630 int this_file_error = 0;
6632 /* Tell do_spec what to substitute for %i. */
6634 input_file_number = i;
6635 set_input (infiles[i].name);
6637 if (infiles[i].compiled)
6640 /* Use the same thing in %o, unless cp->spec says otherwise. */
6642 outfiles[i] = input_filename;
6644 /* Figure out which compiler from the file's suffix. */
6646 if (! combine_inputs)
6648 = lookup_compiler (infiles[i].name, input_filename_length,
6649 infiles[i].language);
6651 input_file_compiler = infiles[i].incompiler;
6653 if (input_file_compiler)
6655 /* Ok, we found an applicable compiler. Run its spec. */
6657 if (input_file_compiler->spec[0] == '#')
6659 error ("%s: %s compiler not installed on this system",
6660 input_filename, &input_file_compiler->spec[1]);
6661 this_file_error = 1;
6665 value = do_spec (input_file_compiler->spec);
6666 infiles[i].compiled = true;
6668 this_file_error = 1;
6672 /* If this file's name does not contain a recognized suffix,
6673 record it as explicit linker input. */
6676 explicit_link_files[i] = 1;
6678 /* Clear the delete-on-failure queue, deleting the files in it
6679 if this compilation failed. */
6681 if (this_file_error)
6683 delete_failure_queue ();
6686 /* If this compilation succeeded, don't delete those files later. */
6687 clear_failure_queue ();
6690 /* Reset the input file name to the first compile/object file name, for use
6691 with %b in LINK_SPEC. We use the first input file that we can find
6692 a compiler to compile it instead of using infiles.language since for
6693 languages other than C we use aliases that we then lookup later. */
6698 for (i = 0; i < n_infiles ; i++)
6699 if (infiles[i].language && infiles[i].language[0] != '*')
6701 set_input (infiles[i].name);
6706 if (error_count == 0)
6708 /* Make sure INPUT_FILE_NUMBER points to first available open
6710 input_file_number = n_infiles;
6711 if (lang_specific_pre_link ())
6715 /* Determine if there are any linker input files. */
6716 num_linker_inputs = 0;
6717 for (i = 0; (int) i < n_infiles; i++)
6718 if (explicit_link_files[i] || outfiles[i] != NULL)
6719 num_linker_inputs++;
6721 /* Run ld to link all the compiler output files. */
6723 if (num_linker_inputs > 0 && error_count == 0 && print_subprocess_help < 2)
6725 int tmp = execution_count;
6727 /* We'll use ld if we can't find collect2. */
6728 if (! strcmp (linker_name_spec, "collect2"))
6730 char *s = find_a_file (&exec_prefixes, "collect2", X_OK, false);
6732 linker_name_spec = "ld";
6734 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
6736 putenv_from_prefixes (&exec_prefixes, "COMPILER_PATH", false);
6737 putenv_from_prefixes (&startfile_prefixes, LIBRARY_PATH_ENV, true);
6739 if (print_subprocess_help == 1)
6741 printf (_("\nLinker options\n==============\n\n"));
6742 printf (_("Use \"-Wl,OPTION\" to pass \"OPTION\""
6743 " to the linker.\n\n"));
6746 value = do_spec (link_command_spec);
6749 linker_was_run = (tmp != execution_count);
6752 /* If options said don't run linker,
6753 complain about input files to be given to the linker. */
6755 if (! linker_was_run && error_count == 0)
6756 for (i = 0; (int) i < n_infiles; i++)
6757 if (explicit_link_files[i]
6758 && !(infiles[i].language && infiles[i].language[0] == '*'))
6759 error ("%s: linker input file unused because linking not done",
6762 /* Delete some or all of the temporary files we made. */
6765 delete_failure_queue ();
6766 delete_temp_files ();
6768 if (print_help_list)
6770 printf (("\nFor bug reporting instructions, please see:\n"));
6771 printf ("%s\n", bug_report_url);
6774 return (signal_count != 0 ? 2
6775 : error_count > 0 ? (pass_exit_codes ? greatest_status : 1)
6779 /* Find the proper compilation spec for the file name NAME,
6780 whose length is LENGTH. LANGUAGE is the specified language,
6781 or 0 if this file is to be passed to the linker. */
6783 static struct compiler *
6784 lookup_compiler (const char *name, size_t length, const char *language)
6786 struct compiler *cp;
6788 /* If this was specified by the user to be a linker input, indicate that. */
6789 if (language != 0 && language[0] == '*')
6792 /* Otherwise, look for the language, if one is spec'd. */
6795 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6796 if (cp->suffix[0] == '@' && !strcmp (cp->suffix + 1, language))
6799 error ("language %s not recognized", language);
6803 /* Look for a suffix. */
6804 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6806 if (/* The suffix `-' matches only the file name `-'. */
6807 (!strcmp (cp->suffix, "-") && !strcmp (name, "-"))
6808 || (strlen (cp->suffix) < length
6809 /* See if the suffix matches the end of NAME. */
6810 && !strcmp (cp->suffix,
6811 name + length - strlen (cp->suffix))
6816 #if defined (OS2) ||defined (HAVE_DOS_BASED_FILE_SYSTEM)
6817 /* Look again, but case-insensitively this time. */
6819 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6821 if (/* The suffix `-' matches only the file name `-'. */
6822 (!strcmp (cp->suffix, "-") && !strcmp (name, "-"))
6823 || (strlen (cp->suffix) < length
6824 /* See if the suffix matches the end of NAME. */
6825 && ((!strcmp (cp->suffix,
6826 name + length - strlen (cp->suffix))
6827 || !strpbrk (cp->suffix, "ABCDEFGHIJKLMNOPQRSTUVWXYZ"))
6828 && !strcasecmp (cp->suffix,
6829 name + length - strlen (cp->suffix)))
6835 if (cp >= compilers)
6837 if (cp->spec[0] != '@')
6838 /* A non-alias entry: return it. */
6841 /* An alias entry maps a suffix to a language.
6842 Search for the language; pass 0 for NAME and LENGTH
6843 to avoid infinite recursion if language not found. */
6844 return lookup_compiler (NULL, 0, cp->spec + 1);
6850 save_string (const char *s, int len)
6852 char *result = XNEWVEC (char, len + 1);
6854 memcpy (result, s, len);
6860 pfatal_with_name (const char *name)
6862 perror_with_name (name);
6863 delete_temp_files ();
6868 perror_with_name (const char *name)
6870 error ("%s: %s", name, xstrerror (errno));
6873 /* Output an error message and exit. */
6876 fancy_abort (const char *file, int line, const char *func)
6878 fatal_ice ("internal gcc abort in %s, at %s:%d", func, file, line);
6881 /* Output an error message and exit. */
6884 fatal_ice (const char *cmsgid, ...)
6888 va_start (ap, cmsgid);
6890 fprintf (stderr, "%s: ", programname);
6891 vfprintf (stderr, _(cmsgid), ap);
6893 fprintf (stderr, "\n");
6894 delete_temp_files ();
6895 exit (pass_exit_codes ? ICE_EXIT_CODE : 1);
6899 fatal (const char *cmsgid, ...)
6903 va_start (ap, cmsgid);
6905 fprintf (stderr, "%s: ", programname);
6906 vfprintf (stderr, _(cmsgid), ap);
6908 fprintf (stderr, "\n");
6909 delete_temp_files ();
6913 /* The argument is actually c-format, not gcc-internal-format,
6914 but because functions with identical names are used through
6915 the rest of the compiler with gcc-internal-format, we just
6916 need to hope all users of these functions use the common
6917 subset between c-format and gcc-internal-format. */
6920 error (const char *gmsgid, ...)
6924 va_start (ap, gmsgid);
6925 fprintf (stderr, "%s: ", programname);
6926 vfprintf (stderr, _(gmsgid), ap);
6929 fprintf (stderr, "\n");
6933 notice (const char *cmsgid, ...)
6937 va_start (ap, cmsgid);
6938 vfprintf (stderr, _(cmsgid), ap);
6943 validate_switches_from_spec (const char *spec)
6945 const char *p = spec;
6948 if (c == '%' && (*p == '{' || *p == '<' || (*p == 'W' && *++p == '{')))
6949 /* We have a switch spec. */
6950 p = validate_switches (p + 1);
6954 validate_all_switches (void)
6956 struct compiler *comp;
6957 struct spec_list *spec;
6959 for (comp = compilers; comp->spec; comp++)
6960 validate_switches_from_spec (comp->spec);
6962 /* Look through the linked list of specs read from the specs file. */
6963 for (spec = specs; spec; spec = spec->next)
6964 validate_switches_from_spec (*spec->ptr_spec);
6966 validate_switches_from_spec (link_command_spec);
6969 /* Look at the switch-name that comes after START
6970 and mark as valid all supplied switches that match it. */
6973 validate_switches (const char *start)
6975 const char *p = start;
6979 bool suffix = false;
6980 bool starred = false;
6982 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
6991 if (*p == '.' || *p == ',')
6995 while (ISIDNUM (*p) || *p == '-' || *p == '+' || *p == '='
6996 || *p == ',' || *p == '.' || *p == '@')
7001 starred = true, p++;
7007 /* Mark all matching switches as valid. */
7008 for (i = 0; i < n_switches; i++)
7009 if (!strncmp (switches[i].part1, atom, len)
7010 && (starred || switches[i].part1[len] == 0))
7011 switches[i].validated = 1;
7015 if (*p && (p[-1] == '|' || p[-1] == '&'))
7018 if (*p && p[-1] == ':')
7020 while (*p && *p != ';' && *p != '}')
7025 if (*p == '{' || *p == '<')
7026 p = validate_switches (p+1);
7027 else if (p[0] == 'W' && p[1] == '{')
7028 p = validate_switches (p+2);
7035 if (*p && p[-1] == ';')
7049 static struct mdswitchstr *mdswitches;
7050 static int n_mdswitches;
7052 /* Check whether a particular argument was used. The first time we
7053 canonicalize the switches to keep only the ones we care about. */
7056 used_arg (const char *p, int len)
7061 const char *replace;
7066 static struct mswitchstr *mswitches;
7067 static int n_mswitches;
7072 struct mswitchstr *matches;
7076 /* Break multilib_matches into the component strings of string
7077 and replacement string. */
7078 for (q = multilib_matches; *q != '\0'; q++)
7082 matches = alloca ((sizeof (struct mswitchstr)) * cnt);
7084 q = multilib_matches;
7093 fatal ("multilib spec '%s' is invalid", multilib_matches);
7097 matches[i].len = q - matches[i].str;
7099 matches[i].replace = ++q;
7100 while (*q != ';' && *q != '\0')
7103 goto invalid_matches;
7106 matches[i].rep_len = q - matches[i].replace;
7112 /* Now build a list of the replacement string for switches that we care
7113 about. Make sure we allocate at least one entry. This prevents
7114 xmalloc from calling fatal, and prevents us from re-executing this
7117 = XNEWVEC (struct mswitchstr, n_mdswitches + (n_switches ? n_switches : 1));
7118 for (i = 0; i < n_switches; i++)
7119 if (switches[i].live_cond != SWITCH_IGNORE)
7121 int xlen = strlen (switches[i].part1);
7122 for (j = 0; j < cnt; j++)
7123 if (xlen == matches[j].len
7124 && ! strncmp (switches[i].part1, matches[j].str, xlen))
7126 mswitches[n_mswitches].str = matches[j].replace;
7127 mswitches[n_mswitches].len = matches[j].rep_len;
7128 mswitches[n_mswitches].replace = (char *) 0;
7129 mswitches[n_mswitches].rep_len = 0;
7135 /* Add MULTILIB_DEFAULTS switches too, as long as they were not present
7136 on the command line nor any options mutually incompatible with
7138 for (i = 0; i < n_mdswitches; i++)
7142 for (q = multilib_options; *q != '\0'; q++)
7148 while (strncmp (q, mdswitches[i].str, mdswitches[i].len) != 0
7149 || strchr (" /", q[mdswitches[i].len]) == NULL)
7151 while (*q != ' ' && *q != '/' && *q != '\0')
7158 if (*q != ' ' && *q != '\0')
7160 while (*r != ' ' && *r != '\0')
7163 while (*q != ' ' && *q != '/' && *q != '\0')
7166 if (used_arg (r, q - r))
7171 mswitches[n_mswitches].str = mdswitches[i].str;
7172 mswitches[n_mswitches].len = mdswitches[i].len;
7173 mswitches[n_mswitches].replace = (char *) 0;
7174 mswitches[n_mswitches].rep_len = 0;
7187 for (i = 0; i < n_mswitches; i++)
7188 if (len == mswitches[i].len && ! strncmp (p, mswitches[i].str, len))
7195 default_arg (const char *p, int len)
7199 for (i = 0; i < n_mdswitches; i++)
7200 if (len == mdswitches[i].len && ! strncmp (p, mdswitches[i].str, len))
7206 /* Work out the subdirectory to use based on the options. The format of
7207 multilib_select is a list of elements. Each element is a subdirectory
7208 name followed by a list of options followed by a semicolon. The format
7209 of multilib_exclusions is the same, but without the preceding
7210 directory. First gcc will check the exclusions, if none of the options
7211 beginning with an exclamation point are present, and all of the other
7212 options are present, then we will ignore this completely. Passing
7213 that, gcc will consider each multilib_select in turn using the same
7214 rules for matching the options. If a match is found, that subdirectory
7218 set_multilib_dir (void)
7221 unsigned int this_path_len;
7222 const char *this_path, *this_arg;
7223 const char *start, *end;
7225 int ok, ndfltok, first;
7228 start = multilib_defaults;
7229 while (*start == ' ' || *start == '\t')
7231 while (*start != '\0')
7234 while (*start != ' ' && *start != '\t' && *start != '\0')
7236 while (*start == ' ' || *start == '\t')
7244 mdswitches = XNEWVEC (struct mdswitchstr, n_mdswitches);
7245 for (start = multilib_defaults; *start != '\0'; start = end + 1)
7247 while (*start == ' ' || *start == '\t')
7253 for (end = start + 1;
7254 *end != ' ' && *end != '\t' && *end != '\0'; end++)
7257 obstack_grow (&multilib_obstack, start, end - start);
7258 obstack_1grow (&multilib_obstack, 0);
7259 mdswitches[i].str = XOBFINISH (&multilib_obstack, const char *);
7260 mdswitches[i++].len = end - start;
7267 p = multilib_exclusions;
7270 /* Ignore newlines. */
7277 /* Check the arguments. */
7284 fatal ("multilib exclusions '%s' is invalid",
7285 multilib_exclusions);
7295 while (*p != ' ' && *p != ';')
7298 goto invalid_exclusions;
7302 if (*this_arg != '!')
7310 ok = used_arg (this_arg, p - this_arg);
7325 p = multilib_select;
7328 /* Ignore newlines. */
7335 /* Get the initial path. */
7342 fatal ("multilib select '%s' is invalid",
7347 this_path_len = p - this_path;
7349 /* Check the arguments. */
7356 goto invalid_select;
7365 while (*p != ' ' && *p != ';')
7368 goto invalid_select;
7372 if (*this_arg != '!')
7380 /* If this is a default argument, we can just ignore it.
7381 This is true even if this_arg begins with '!'. Beginning
7382 with '!' does not mean that this argument is necessarily
7383 inappropriate for this library: it merely means that
7384 there is a more specific library which uses this
7385 argument. If this argument is a default, we need not
7386 consider that more specific library. */
7387 ok = used_arg (this_arg, p - this_arg);
7394 if (default_arg (this_arg, p - this_arg))
7403 if (this_path_len != 1
7404 || this_path[0] != '.')
7406 char *new_multilib_dir = XNEWVEC (char, this_path_len + 1);
7409 strncpy (new_multilib_dir, this_path, this_path_len);
7410 new_multilib_dir[this_path_len] = '\0';
7411 q = strchr (new_multilib_dir, ':');
7414 multilib_dir = new_multilib_dir;
7421 const char *q = this_path, *end = this_path + this_path_len;
7423 while (q < end && *q != ':')
7427 char *new_multilib_os_dir = XNEWVEC (char, end - q);
7428 memcpy (new_multilib_os_dir, q + 1, end - q - 1);
7429 new_multilib_os_dir[end - q - 1] = '\0';
7430 multilib_os_dir = new_multilib_os_dir;
7438 if (multilib_dir == NULL && multilib_os_dir != NULL
7439 && strcmp (multilib_os_dir, ".") == 0)
7441 free (CONST_CAST (multilib_os_dir));
7442 multilib_os_dir = NULL;
7444 else if (multilib_dir != NULL && multilib_os_dir == NULL)
7445 multilib_os_dir = multilib_dir;
7448 /* Print out the multiple library subdirectory selection
7449 information. This prints out a series of lines. Each line looks
7450 like SUBDIRECTORY;@OPTION@OPTION, with as many options as is
7451 required. Only the desired options are printed out, the negative
7452 matches. The options are print without a leading dash. There are
7453 no spaces to make it easy to use the information in the shell.
7454 Each subdirectory is printed only once. This assumes the ordering
7455 generated by the genmultilib script. Also, we leave out ones that match
7459 print_multilib_info (void)
7461 const char *p = multilib_select;
7462 const char *last_path = 0, *this_path;
7464 unsigned int last_path_len = 0;
7469 /* Ignore newlines. */
7476 /* Get the initial path. */
7483 fatal ("multilib select '%s' is invalid", multilib_select);
7489 /* When --disable-multilib was used but target defines
7490 MULTILIB_OSDIRNAMES, entries starting with .: are there just
7491 to find multilib_os_dir, so skip them from output. */
7492 if (this_path[0] == '.' && this_path[1] == ':')
7495 /* Check for matches with the multilib_exclusions. We don't bother
7496 with the '!' in either list. If any of the exclusion rules match
7497 all of its options with the select rule, we skip it. */
7499 const char *e = multilib_exclusions;
7500 const char *this_arg;
7505 /* Ignore newlines. */
7512 /* Check the arguments. */
7521 fatal ("multilib exclusion '%s' is invalid",
7522 multilib_exclusions);
7533 while (*e != ' ' && *e != ';')
7536 goto invalid_exclusion;
7544 int len = e - this_arg;
7547 goto invalid_select;
7551 while (*q != ' ' && *q != ';')
7554 goto invalid_select;
7558 if (! strncmp (arg, this_arg,
7559 (len < q - arg) ? q - arg : len)
7560 || default_arg (this_arg, e - this_arg))
7590 /* If this is a duplicate, skip it. */
7591 skip = (last_path != 0
7592 && (unsigned int) (p - this_path) == last_path_len
7593 && ! strncmp (last_path, this_path, last_path_len));
7595 last_path = this_path;
7596 last_path_len = p - this_path;
7599 /* If this directory requires any default arguments, we can skip
7600 it. We will already have printed a directory identical to
7601 this one which does not require that default argument. */
7612 goto invalid_select;
7619 while (*q != ' ' && *q != ';')
7622 goto invalid_select;
7627 && default_arg (arg, q - arg))
7642 for (p1 = last_path; p1 < p && *p1 != ':'; p1++)
7653 goto invalid_select;
7661 use_arg = *p != '!';
7666 while (*p != ' ' && *p != ';')
7669 goto invalid_select;
7681 /* If there are extra options, print them now. */
7682 if (multilib_extra && *multilib_extra)
7684 int print_at = TRUE;
7687 for (q = multilib_extra; *q != '\0'; q++)
7708 /* getenv built-in spec function.
7710 Returns the value of the environment variable given by its first
7711 argument, concatenated with the second argument. If the
7712 environment variable is not defined, a fatal error is issued. */
7715 getenv_spec_function (int argc, const char **argv)
7722 value = getenv (argv[0]);
7724 fatal ("environment variable \"%s\" not defined", argv[0]);
7726 return concat (value, argv[1], NULL);
7729 /* if-exists built-in spec function.
7731 Checks to see if the file specified by the absolute pathname in
7732 ARGS exists. Returns that pathname if found.
7734 The usual use for this function is to check for a library file
7735 (whose name has been expanded with %s). */
7738 if_exists_spec_function (int argc, const char **argv)
7740 /* Must have only one argument. */
7741 if (argc == 1 && IS_ABSOLUTE_PATH (argv[0]) && ! access (argv[0], R_OK))
7747 /* if-exists-else built-in spec function.
7749 This is like if-exists, but takes an additional argument which
7750 is returned if the first argument does not exist. */
7753 if_exists_else_spec_function (int argc, const char **argv)
7755 /* Must have exactly two arguments. */
7759 if (IS_ABSOLUTE_PATH (argv[0]) && ! access (argv[0], R_OK))
7765 /* replace-outfile built-in spec function.
7767 This looks for the first argument in the outfiles array's name and
7768 replaces it with the second argument. */
7771 replace_outfile_spec_function (int argc, const char **argv)
7774 /* Must have exactly two arguments. */
7778 for (i = 0; i < n_infiles; i++)
7780 if (outfiles[i] && !strcmp (outfiles[i], argv[0]))
7781 outfiles[i] = xstrdup (argv[1]);
7786 /* Given two version numbers, compares the two numbers.
7787 A version number must match the regular expression
7788 ([1-9][0-9]*|0)(\.([1-9][0-9]*|0))*
7791 compare_version_strings (const char *v1, const char *v2)
7796 if (regcomp (&r, "^([1-9][0-9]*|0)(\\.([1-9][0-9]*|0))*$",
7797 REG_EXTENDED | REG_NOSUB) != 0)
7799 rresult = regexec (&r, v1, 0, NULL, 0);
7800 if (rresult == REG_NOMATCH)
7801 fatal ("invalid version number `%s'", v1);
7802 else if (rresult != 0)
7804 rresult = regexec (&r, v2, 0, NULL, 0);
7805 if (rresult == REG_NOMATCH)
7806 fatal ("invalid version number `%s'", v2);
7807 else if (rresult != 0)
7810 return strverscmp (v1, v2);
7814 /* version_compare built-in spec function.
7816 This takes an argument of the following form:
7818 <comparison-op> <arg1> [<arg2>] <switch> <result>
7820 and produces "result" if the comparison evaluates to true,
7821 and nothing if it doesn't.
7823 The supported <comparison-op> values are:
7825 >= true if switch is a later (or same) version than arg1
7827 < true if switch is an earlier version than arg1
7829 >< true if switch is arg1 or later, and earlier than arg2
7830 <> true if switch is earlier than arg1 or is arg2 or later
7832 If the switch is not present, the condition is false unless
7833 the first character of the <comparison-op> is '!'.
7836 %:version-compare(>= 10.3 mmacosx-version-min= -lmx)
7837 adds -lmx if -mmacosx-version-min=10.3.9 was passed. */
7840 version_compare_spec_function (int argc, const char **argv)
7844 const char *switch_value = NULL;
7849 fatal ("too few arguments to %%:version-compare");
7850 if (argv[0][0] == '\0')
7852 if ((argv[0][1] == '<' || argv[0][1] == '>') && argv[0][0] != '!')
7854 if (argc != nargs + 3)
7855 fatal ("too many arguments to %%:version-compare");
7857 switch_len = strlen (argv[nargs + 1]);
7858 for (i = 0; i < n_switches; i++)
7859 if (!strncmp (switches[i].part1, argv[nargs + 1], switch_len)
7860 && check_live_switch (i, switch_len))
7861 switch_value = switches[i].part1 + switch_len;
7863 if (switch_value == NULL)
7867 comp1 = compare_version_strings (switch_value, argv[1]);
7869 comp2 = compare_version_strings (switch_value, argv[2]);
7871 comp2 = -1; /* This value unused. */
7874 switch (argv[0][0] << 8 | argv[0][1])
7876 case '>' << 8 | '=':
7877 result = comp1 >= 0;
7879 case '!' << 8 | '<':
7880 result = comp1 >= 0 || switch_value == NULL;
7885 case '!' << 8 | '>':
7886 result = comp1 < 0 || switch_value == NULL;
7888 case '>' << 8 | '<':
7889 result = comp1 >= 0 && comp2 < 0;
7891 case '<' << 8 | '>':
7892 result = comp1 < 0 || comp2 >= 0;
7896 fatal ("unknown operator '%s' in %%:version-compare", argv[0]);
7901 return argv[nargs + 2];
7904 /* %:include builtin spec function. This differs from %include in that it
7905 can be nested inside a spec, and thus be conditionalized. It takes
7906 one argument, the filename, and looks for it in the startfile path.
7907 The result is always NULL, i.e. an empty expansion. */
7910 include_spec_function (int argc, const char **argv)
7917 file = find_a_file (&startfile_prefixes, argv[0], R_OK, 0);
7918 read_specs (file ? file : argv[0], FALSE);
7923 /* %:print-asm-header spec function. Print a banner to say that the
7924 following output is from the assembler. */
7927 print_asm_header_spec_function (int arg ATTRIBUTE_UNUSED,
7928 const char **argv ATTRIBUTE_UNUSED)
7930 printf (_("Assembler options\n=================\n\n"));
7931 printf (_("Use \"-Wa,OPTION\" to pass \"OPTION\" to the assembler.\n\n"));