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 #ifdef HAVE_AS_DEBUG_PREFIX_MAP
659 #define ASM_MAP " %{fdebug-prefix-map=*:--debug-prefix-map %*}"
664 /* Define ASM_DEBUG_SPEC to be a spec suitable for translating '-g'
666 #ifndef ASM_DEBUG_SPEC
667 # if defined(DBX_DEBUGGING_INFO) && defined(DWARF2_DEBUGGING_INFO) \
668 && defined(HAVE_AS_GDWARF2_DEBUG_FLAG) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
669 # define ASM_DEBUG_SPEC \
670 (PREFERRED_DEBUGGING_TYPE == DBX_DEBUG \
671 ? "%{gdwarf-2*:--gdwarf2}%{!gdwarf-2*:%{g*:--gstabs}}" ASM_MAP \
672 : "%{gstabs*:--gstabs}%{!gstabs*:%{g*:--gdwarf2}}" ASM_MAP)
674 # if defined(DBX_DEBUGGING_INFO) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
675 # define ASM_DEBUG_SPEC "%{g*:--gstabs}" ASM_MAP
677 # if defined(DWARF2_DEBUGGING_INFO) && defined(HAVE_AS_GDWARF2_DEBUG_FLAG)
678 # define ASM_DEBUG_SPEC "%{g*:--gdwarf2}" ASM_MAP
682 #ifndef ASM_DEBUG_SPEC
683 # define ASM_DEBUG_SPEC ""
686 /* Here is the spec for running the linker, after compiling all files. */
688 /* This is overridable by the target in case they need to specify the
689 -lgcc and -lc order specially, yet not require them to override all
690 of LINK_COMMAND_SPEC. */
691 #ifndef LINK_GCC_C_SEQUENCE_SPEC
692 #define LINK_GCC_C_SEQUENCE_SPEC "%G %L %G"
695 #ifndef LINK_SSP_SPEC
696 #ifdef TARGET_LIBC_PROVIDES_SSP
697 #define LINK_SSP_SPEC "%{fstack-protector:}"
699 #define LINK_SSP_SPEC "%{fstack-protector|fstack-protector-all:-lssp_nonshared -lssp}"
703 #ifndef LINK_PIE_SPEC
705 #define LINK_PIE_SPEC "%{pie:-pie} "
707 #define LINK_PIE_SPEC "%{pie:} "
711 /* -u* was put back because both BSD and SysV seem to support it. */
712 /* %{static:} simply prevents an error message if the target machine
713 doesn't handle -static. */
714 /* We want %{T*} after %{L*} and %D so that it can be used to specify linker
715 scripts which exist in user specified directories, or in standard
717 #ifndef LINK_COMMAND_SPEC
718 #define LINK_COMMAND_SPEC "\
719 %{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:\
720 %(linker) %l " LINK_PIE_SPEC "%X %{o*} %{A} %{d} %{e*} %{m} %{N} %{n} %{r}\
721 %{s} %{t} %{u*} %{x} %{z} %{Z} %{!A:%{!nostdlib:%{!nostartfiles:%S}}}\
722 %{static:} %{L*} %(mfwrap) %(link_libgcc) %o\
723 %{fopenmp:%:include(libgomp.spec)%(link_gomp)} %(mflib)\
724 %{fprofile-arcs|fprofile-generate|coverage:-lgcov}\
725 %{!nostdlib:%{!nodefaultlibs:%(link_ssp) %(link_gcc_c_sequence)}}\
726 %{!A:%{!nostdlib:%{!nostartfiles:%E}}} %{T*} }}}}}}"
729 #ifndef LINK_LIBGCC_SPEC
730 /* Generate -L options for startfile prefix list. */
731 # define LINK_LIBGCC_SPEC "%D"
734 #ifndef STARTFILE_PREFIX_SPEC
735 # define STARTFILE_PREFIX_SPEC ""
739 # define SYSROOT_SPEC "--sysroot=%R"
742 #ifndef SYSROOT_SUFFIX_SPEC
743 # define SYSROOT_SUFFIX_SPEC ""
746 #ifndef SYSROOT_HEADERS_SUFFIX_SPEC
747 # define SYSROOT_HEADERS_SUFFIX_SPEC ""
750 static const char *asm_debug;
751 static const char *cpp_spec = CPP_SPEC;
752 static const char *cc1_spec = CC1_SPEC;
753 static const char *cc1plus_spec = CC1PLUS_SPEC;
754 static const char *link_gcc_c_sequence_spec = LINK_GCC_C_SEQUENCE_SPEC;
755 static const char *link_ssp_spec = LINK_SSP_SPEC;
756 static const char *asm_spec = ASM_SPEC;
757 static const char *asm_final_spec = ASM_FINAL_SPEC;
758 static const char *link_spec = LINK_SPEC;
759 static const char *lib_spec = LIB_SPEC;
760 static const char *mfwrap_spec = MFWRAP_SPEC;
761 static const char *mflib_spec = MFLIB_SPEC;
762 static const char *link_gomp_spec = "";
763 static const char *libgcc_spec = LIBGCC_SPEC;
764 static const char *endfile_spec = ENDFILE_SPEC;
765 static const char *startfile_spec = STARTFILE_SPEC;
766 static const char *switches_need_spaces = SWITCHES_NEED_SPACES;
767 static const char *linker_name_spec = LINKER_NAME;
768 static const char *link_command_spec = LINK_COMMAND_SPEC;
769 static const char *link_libgcc_spec = LINK_LIBGCC_SPEC;
770 static const char *startfile_prefix_spec = STARTFILE_PREFIX_SPEC;
771 static const char *sysroot_spec = SYSROOT_SPEC;
772 static const char *sysroot_suffix_spec = SYSROOT_SUFFIX_SPEC;
773 static const char *sysroot_hdrs_suffix_spec = SYSROOT_HEADERS_SUFFIX_SPEC;
775 /* Standard options to cpp, cc1, and as, to reduce duplication in specs.
776 There should be no need to override these in target dependent files,
777 but we need to copy them to the specs file so that newer versions
778 of the GCC driver can correctly drive older tool chains with the
779 appropriate -B options. */
781 /* When cpplib handles traditional preprocessing, get rid of this, and
782 call cc1 (or cc1obj in objc/lang-specs.h) from the main specs so
783 that we default the front end language better. */
784 static const char *trad_capable_cpp =
785 "cc1 -E %{traditional|ftraditional|traditional-cpp:-traditional-cpp}";
787 /* We don't wrap .d files in %W{} since a missing .d file, and
788 therefore no dependency entry, confuses make into thinking a .o
789 file that happens to exist is up-to-date. */
790 static const char *cpp_unique_options =
791 "%{C|CC:%{!E:%eGCC does not support -C or -CC without -E}}\
792 %{!Q:-quiet} %{nostdinc*} %{C} %{CC} %{v} %{I*&F*} %{P} %I\
793 %{MD:-MD %{!o:%b.d}%{o*:%.d%*}}\
794 %{MMD:-MMD %{!o:%b.d}%{o*:%.d%*}}\
795 %{M} %{MM} %{MF*} %{MG} %{MP} %{MQ*} %{MT*}\
796 %{!E:%{!M:%{!MM:%{!MT:%{!MQ:%{MD|MMD:%{o*:-MQ %*}}}}}}}\
797 %{remap} %{g3|ggdb3|gstabs3|gcoff3|gxcoff3|gvms3:-dD}\
798 %{H} %C %{D*&U*&A*} %{i*} %Z %i\
799 %{fmudflap:-D_MUDFLAP -include mf-runtime.h}\
800 %{fmudflapth:-D_MUDFLAP -D_MUDFLAPTH -include mf-runtime.h}\
803 /* This contains cpp options which are common with cc1_options and are passed
804 only when preprocessing only to avoid duplication. We pass the cc1 spec
805 options to the preprocessor so that it the cc1 spec may manipulate
806 options used to set target flags. Those special target flags settings may
807 in turn cause preprocessor symbols to be defined specially. */
808 static const char *cpp_options =
809 "%(cpp_unique_options) %1 %{m*} %{std*&ansi&trigraphs} %{W*&pedantic*} %{w}\
810 %{f*} %{g*:%{!g0:%{!fno-working-directory:-fworking-directory}}} %{O*}\
811 %{undef} %{save-temps:-fpch-preprocess}";
813 /* This contains cpp options which are not passed when the preprocessor
814 output will be used by another program. */
815 static const char *cpp_debug_options = "%{d*}";
817 /* NB: This is shared amongst all front-ends. */
818 static const char *cc1_options =
819 "%{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\
820 %1 %{!Q:-quiet} -dumpbase %B %{d*} %{m*} %{a*}\
821 %{c|S:%{o*:-auxbase-strip %*}%{!o*:-auxbase %b}}%{!c:%{!S:-auxbase %b}}\
822 %{g*} %{O*} %{W*&pedantic*} %{w} %{std*&ansi&trigraphs}\
823 %{v:-version} %{pg:-p} %{p} %{f*} %{undef}\
824 %{Qn:-fno-ident} %{--help:--help}\
825 %{--target-help:--target-help}\
826 %{--help=*:--help=%(VALUE)}\
827 %{!fsyntax-only:%{S:%W{o*}%{!o*:-o %b.s}}}\
828 %{fsyntax-only:-o %j} %{-param*}\
829 %{fmudflap|fmudflapth:-fno-builtin -fno-merge-constants}\
830 %{coverage:-fprofile-arcs -ftest-coverage}";
832 static const char *asm_options =
833 "%{--target-help:%:print-asm-header()} "
835 /* If GNU AS is used, then convert -w (no warnings), -I, and -v
836 to the assembler equivalents. */
837 "%{v} %{w:-W} %{I*} "
839 "%a %Y %{c:%W{o*}%{!o*:-o %w%b%O}}%{!c:-o %d%w%u%O}";
841 static const char *invoke_as =
842 #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT
843 "%{!S:-o %|.s |\n as %(asm_options) %|.s %A }";
845 "%{!S:-o %|.s |\n as %(asm_options) %m.s %A }";
848 /* Some compilers have limits on line lengths, and the multilib_select
849 and/or multilib_matches strings can be very long, so we build them at
851 static struct obstack multilib_obstack;
852 static const char *multilib_select;
853 static const char *multilib_matches;
854 static const char *multilib_defaults;
855 static const char *multilib_exclusions;
857 /* Check whether a particular argument is a default argument. */
859 #ifndef MULTILIB_DEFAULTS
860 #define MULTILIB_DEFAULTS { "" }
863 static const char *const multilib_defaults_raw[] = MULTILIB_DEFAULTS;
865 #ifndef DRIVER_SELF_SPECS
866 #define DRIVER_SELF_SPECS ""
869 /* Adding -fopenmp should imply pthreads. This is particularly important
870 for targets that use different start files and suchlike. */
871 #ifndef GOMP_SELF_SPECS
872 #define GOMP_SELF_SPECS "%{fopenmp: -pthread}"
875 static const char *const driver_self_specs[] = {
876 DRIVER_SELF_SPECS, GOMP_SELF_SPECS
879 #ifndef OPTION_DEFAULT_SPECS
880 #define OPTION_DEFAULT_SPECS { "", "" }
889 static const struct default_spec
890 option_default_specs[] = { OPTION_DEFAULT_SPECS };
894 struct user_specs *next;
895 const char *filename;
898 static struct user_specs *user_specs_head, *user_specs_tail;
900 #ifndef SWITCH_TAKES_ARG
901 #define SWITCH_TAKES_ARG(CHAR) DEFAULT_SWITCH_TAKES_ARG(CHAR)
904 #ifndef WORD_SWITCH_TAKES_ARG
905 #define WORD_SWITCH_TAKES_ARG(STR) DEFAULT_WORD_SWITCH_TAKES_ARG (STR)
908 #ifdef HAVE_TARGET_EXECUTABLE_SUFFIX
909 /* This defines which switches stop a full compilation. */
910 #define DEFAULT_SWITCH_CURTAILS_COMPILATION(CHAR) \
911 ((CHAR) == 'c' || (CHAR) == 'S')
913 #ifndef SWITCH_CURTAILS_COMPILATION
914 #define SWITCH_CURTAILS_COMPILATION(CHAR) \
915 DEFAULT_SWITCH_CURTAILS_COMPILATION(CHAR)
919 /* Record the mapping from file suffixes for compilation specs. */
923 const char *suffix; /* Use this compiler for input files
924 whose names end in this suffix. */
926 const char *spec; /* To use this compiler, run this spec. */
928 const char *cpp_spec; /* If non-NULL, substitute this spec
929 for `%C', rather than the usual
931 const int combinable; /* If nonzero, compiler can deal with
932 multiple source files at once (IMA). */
933 const int needs_preprocessing; /* If nonzero, source files need to
934 be run through a preprocessor. */
937 /* Pointer to a vector of `struct compiler' that gives the spec for
938 compiling a file, based on its suffix.
939 A file that does not end in any of these suffixes will be passed
940 unchanged to the loader and nothing else will be done to it.
942 An entry containing two 0s is used to terminate the vector.
944 If multiple entries match a file, the last matching one is used. */
946 static struct compiler *compilers;
948 /* Number of entries in `compilers', not counting the null terminator. */
950 static int n_compilers;
952 /* The default list of file name suffixes and their compilation specs. */
954 static const struct compiler default_compilers[] =
956 /* Add lists of suffixes of known languages here. If those languages
957 were not present when we built the driver, we will hit these copies
958 and be given a more meaningful error than "file not used since
959 linking is not done". */
960 {".m", "#Objective-C", 0, 0, 0}, {".mi", "#Objective-C", 0, 0, 0},
961 {".mm", "#Objective-C++", 0, 0, 0}, {".M", "#Objective-C++", 0, 0, 0},
962 {".mii", "#Objective-C++", 0, 0, 0},
963 {".cc", "#C++", 0, 0, 0}, {".cxx", "#C++", 0, 0, 0},
964 {".cpp", "#C++", 0, 0, 0}, {".cp", "#C++", 0, 0, 0},
965 {".c++", "#C++", 0, 0, 0}, {".C", "#C++", 0, 0, 0},
966 {".CPP", "#C++", 0, 0, 0}, {".ii", "#C++", 0, 0, 0},
967 {".ads", "#Ada", 0, 0, 0}, {".adb", "#Ada", 0, 0, 0},
968 {".f", "#Fortran", 0, 0, 0}, {".for", "#Fortran", 0, 0, 0},
969 {".fpp", "#Fortran", 0, 0, 0}, {".F", "#Fortran", 0, 0, 0},
970 {".FOR", "#Fortran", 0, 0, 0}, {".FPP", "#Fortran", 0, 0, 0},
971 {".f90", "#Fortran", 0, 0, 0}, {".f95", "#Fortran", 0, 0, 0},
972 {".F90", "#Fortran", 0, 0, 0}, {".F95", "#Fortran", 0, 0, 0},
973 {".r", "#Ratfor", 0, 0, 0},
974 {".p", "#Pascal", 0, 0, 0}, {".pas", "#Pascal", 0, 0, 0},
975 {".java", "#Java", 0, 0, 0}, {".class", "#Java", 0, 0, 0},
976 {".zip", "#Java", 0, 0, 0}, {".jar", "#Java", 0, 0, 0},
977 /* Next come the entries for C. */
978 {".c", "@c", 0, 1, 1},
980 /* cc1 has an integrated ISO C preprocessor. We should invoke the
981 external preprocessor if -save-temps is given. */
982 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\
984 %{traditional|ftraditional:\
985 %eGNU C no longer supports -traditional without -E}\
987 %{save-temps|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
988 %(cpp_options) -o %{save-temps:%b.i} %{!save-temps:%g.i} \n\
989 cc1 -fpreprocessed %{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)}} \
995 %{save-temps|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
996 %(cpp_options) -o %{save-temps:%b.i} %{!save-temps:%g.i}}\
997 %{!save-temps:%{!traditional-cpp:%{!no-integrated-cpp:\
998 cc1 %(cpp_unique_options) %(cc1_options)}}\
999 %{!fsyntax-only:%(invoke_as)}}}}}}", 0, 1, 1},
1001 "%{!E:%e-E or -x required when input is from standard input}\
1002 %(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)", 0, 0, 0},
1003 {".h", "@c-header", 0, 0, 0},
1005 /* cc1 has an integrated ISO C preprocessor. We should invoke the
1006 external preprocessor if -save-temps is given. */
1007 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\
1009 %{save-temps|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
1010 %(cpp_options) -o %{save-temps:%b.i} %{!save-temps:%g.i} \n\
1011 cc1 -fpreprocessed %{save-temps:%b.i} %{!save-temps:%g.i} \
1013 -o %g.s %{!o*:--output-pch=%i.gch}\
1014 %W{o*:--output-pch=%*}%V}\
1015 %{!save-temps:%{!traditional-cpp:%{!no-integrated-cpp:\
1016 cc1 %(cpp_unique_options) %(cc1_options)\
1017 -o %g.s %{!o*:--output-pch=%i.gch}\
1018 %W{o*:--output-pch=%*}%V}}}}}}", 0, 0, 0},
1019 {".i", "@cpp-output", 0, 1, 0},
1021 "%{!M:%{!MM:%{!E:cc1 -fpreprocessed %i %(cc1_options) %{!fsyntax-only:%(invoke_as)}}}}", 0, 1, 0},
1022 {".s", "@assembler", 0, 1, 0},
1024 "%{!M:%{!MM:%{!E:%{!S:as %(asm_debug) %(asm_options) %i %A }}}}", 0, 1, 0},
1025 {".S", "@assembler-with-cpp", 0, 1, 0},
1026 {"@assembler-with-cpp",
1027 #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT
1028 "%(trad_capable_cpp) -lang-asm %(cpp_options)\
1029 %{E|M|MM:%(cpp_debug_options)}\
1030 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\
1031 as %(asm_debug) %(asm_options) %|.s %A }}}}"
1033 "%(trad_capable_cpp) -lang-asm %(cpp_options)\
1034 %{E|M|MM:%(cpp_debug_options)}\
1035 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\
1036 as %(asm_debug) %(asm_options) %m.s %A }}}}"
1041 /* Mark end of table. */
1045 /* Number of elements in default_compilers, not counting the terminator. */
1047 static const int n_default_compilers = ARRAY_SIZE (default_compilers) - 1;
1049 /* A vector of options to give to the linker.
1050 These options are accumulated by %x,
1051 and substituted into the linker command with %X. */
1052 static int n_linker_options;
1053 static char **linker_options;
1055 /* A vector of options to give to the assembler.
1056 These options are accumulated by -Wa,
1057 and substituted into the assembler command with %Y. */
1058 static int n_assembler_options;
1059 static char **assembler_options;
1061 /* A vector of options to give to the preprocessor.
1062 These options are accumulated by -Wp,
1063 and substituted into the preprocessor command with %Z. */
1064 static int n_preprocessor_options;
1065 static char **preprocessor_options;
1067 /* Define how to map long options into short ones. */
1069 /* This structure describes one mapping. */
1072 /* The long option's name. */
1073 const char *const name;
1074 /* The equivalent short option. */
1075 const char *const equivalent;
1076 /* Argument info. A string of flag chars; NULL equals no options.
1077 a => argument required.
1078 o => argument optional.
1079 j => join argument to equivalent, making one word.
1080 * => require other text after NAME as an argument. */
1081 const char *const arg_info;
1084 /* This is the table of mappings. Mappings are tried sequentially
1085 for each option encountered; the first one that matches, wins. */
1087 static const struct option_map option_map[] =
1089 {"--all-warnings", "-Wall", 0},
1090 {"--ansi", "-ansi", 0},
1091 {"--assemble", "-S", 0},
1092 {"--assert", "-A", "a"},
1093 {"--classpath", "-fclasspath=", "aj"},
1094 {"--bootclasspath", "-fbootclasspath=", "aj"},
1095 {"--CLASSPATH", "-fclasspath=", "aj"},
1096 {"--combine", "-combine", 0},
1097 {"--comments", "-C", 0},
1098 {"--comments-in-macros", "-CC", 0},
1099 {"--compile", "-c", 0},
1100 {"--debug", "-g", "oj"},
1101 {"--define-macro", "-D", "aj"},
1102 {"--dependencies", "-M", 0},
1103 {"--dump", "-d", "a"},
1104 {"--dumpbase", "-dumpbase", "a"},
1105 {"--encoding", "-fencoding=", "aj"},
1106 {"--entry", "-e", 0},
1107 {"--extra-warnings", "-W", 0},
1108 {"--extdirs", "-fextdirs=", "aj"},
1109 {"--for-assembler", "-Wa", "a"},
1110 {"--for-linker", "-Xlinker", "a"},
1111 {"--force-link", "-u", "a"},
1112 {"--coverage", "-coverage", 0},
1113 {"--imacros", "-imacros", "a"},
1114 {"--include", "-include", "a"},
1115 {"--include-barrier", "-I-", 0},
1116 {"--include-directory", "-I", "aj"},
1117 {"--include-directory-after", "-idirafter", "a"},
1118 {"--include-prefix", "-iprefix", "a"},
1119 {"--include-with-prefix", "-iwithprefix", "a"},
1120 {"--include-with-prefix-before", "-iwithprefixbefore", "a"},
1121 {"--include-with-prefix-after", "-iwithprefix", "a"},
1122 {"--language", "-x", "a"},
1123 {"--library-directory", "-L", "a"},
1124 {"--machine", "-m", "aj"},
1125 {"--machine-", "-m", "*j"},
1126 {"--no-integrated-cpp", "-no-integrated-cpp", 0},
1127 {"--no-line-commands", "-P", 0},
1128 {"--no-precompiled-includes", "-noprecomp", 0},
1129 {"--no-standard-includes", "-nostdinc", 0},
1130 {"--no-standard-libraries", "-nostdlib", 0},
1131 {"--no-warnings", "-w", 0},
1132 {"--optimize", "-O", "oj"},
1133 {"--output", "-o", "a"},
1134 {"--output-class-directory", "-foutput-class-dir=", "ja"},
1135 {"--param", "--param", "a"},
1136 {"--pass-exit-codes", "-pass-exit-codes", 0},
1137 {"--pedantic", "-pedantic", 0},
1138 {"--pedantic-errors", "-pedantic-errors", 0},
1139 {"--pie", "-pie", 0},
1140 {"--pipe", "-pipe", 0},
1141 {"--prefix", "-B", "a"},
1142 {"--preprocess", "-E", 0},
1143 {"--print-search-dirs", "-print-search-dirs", 0},
1144 {"--print-file-name", "-print-file-name=", "aj"},
1145 {"--print-libgcc-file-name", "-print-libgcc-file-name", 0},
1146 {"--print-missing-file-dependencies", "-MG", 0},
1147 {"--print-multi-lib", "-print-multi-lib", 0},
1148 {"--print-multi-directory", "-print-multi-directory", 0},
1149 {"--print-multi-os-directory", "-print-multi-os-directory", 0},
1150 {"--print-prog-name", "-print-prog-name=", "aj"},
1151 {"--print-sysroot-headers-suffix", "-print-sysroot-headers-suffix", 0},
1152 {"--profile", "-p", 0},
1153 {"--profile-blocks", "-a", 0},
1154 {"--quiet", "-q", 0},
1155 {"--resource", "-fcompile-resource=", "aj"},
1156 {"--save-temps", "-save-temps", 0},
1157 {"--shared", "-shared", 0},
1158 {"--silent", "-q", 0},
1159 {"--specs", "-specs=", "aj"},
1160 {"--static", "-static", 0},
1161 {"--std", "-std=", "aj"},
1162 {"--symbolic", "-symbolic", 0},
1163 {"--sysroot", "--sysroot=", "aj"},
1164 {"--time", "-time", 0},
1165 {"--trace-includes", "-H", 0},
1166 {"--traditional", "-traditional", 0},
1167 {"--traditional-cpp", "-traditional-cpp", 0},
1168 {"--trigraphs", "-trigraphs", 0},
1169 {"--undefine-macro", "-U", "aj"},
1170 {"--user-dependencies", "-MM", 0},
1171 {"--verbose", "-v", 0},
1172 {"--warn-", "-W", "*j"},
1173 {"--write-dependencies", "-MD", 0},
1174 {"--write-user-dependencies", "-MMD", 0},
1179 #ifdef TARGET_OPTION_TRANSLATE_TABLE
1180 static const struct {
1181 const char *const option_found;
1182 const char *const replacements;
1183 } target_option_translations[] =
1185 TARGET_OPTION_TRANSLATE_TABLE,
1190 /* Translate the options described by *ARGCP and *ARGVP.
1191 Make a new vector and store it back in *ARGVP,
1192 and store its length in *ARGVC. */
1195 translate_options (int *argcp, const char *const **argvp)
1199 const char *const *argv = *argvp;
1200 int newvsize = (argc + 2) * 2 * sizeof (const char *);
1201 const char **newv = xmalloc (newvsize);
1205 newv[newindex++] = argv[i++];
1209 #ifdef TARGET_OPTION_TRANSLATE_TABLE
1213 target_option_translations[tott_idx].option_found;
1216 if (strcmp (target_option_translations[tott_idx].option_found,
1223 for (sp = target_option_translations[tott_idx].replacements;
1230 newvsize += spaces * sizeof (const char *);
1231 newv = xrealloc (newv, newvsize);
1233 sp = target_option_translations[tott_idx].replacements;
1242 newv[newindex++] = np;
1243 while (*np != ' ' && *np)
1254 if (target_option_translations[tott_idx].option_found)
1258 /* Translate -- options. */
1259 if (argv[i][0] == '-' && argv[i][1] == '-')
1262 /* Find a mapping that applies to this option. */
1263 for (j = 0; j < ARRAY_SIZE (option_map); j++)
1265 size_t optlen = strlen (option_map[j].name);
1266 size_t arglen = strlen (argv[i]);
1267 size_t complen = arglen > optlen ? optlen : arglen;
1268 const char *arginfo = option_map[j].arg_info;
1273 if (!strncmp (argv[i], option_map[j].name, complen))
1275 const char *arg = 0;
1277 if (arglen < optlen)
1280 for (k = j + 1; k < ARRAY_SIZE (option_map); k++)
1281 if (strlen (option_map[k].name) >= arglen
1282 && !strncmp (argv[i], option_map[k].name, arglen))
1284 error ("ambiguous abbreviation %s", argv[i]);
1288 if (k != ARRAY_SIZE (option_map))
1292 if (arglen > optlen)
1294 /* If the option has an argument, accept that. */
1295 if (argv[i][optlen] == '=')
1296 arg = argv[i] + optlen + 1;
1298 /* If this mapping requires extra text at end of name,
1299 accept that as "argument". */
1300 else if (strchr (arginfo, '*') != 0)
1301 arg = argv[i] + optlen;
1303 /* Otherwise, extra text at end means mismatch.
1304 Try other mappings. */
1309 else if (strchr (arginfo, '*') != 0)
1311 error ("incomplete '%s' option", option_map[j].name);
1315 /* Handle arguments. */
1316 if (strchr (arginfo, 'a') != 0)
1322 error ("missing argument to '%s' option",
1323 option_map[j].name);
1330 else if (strchr (arginfo, '*') != 0)
1332 else if (strchr (arginfo, 'o') == 0)
1335 error ("extraneous argument to '%s' option",
1336 option_map[j].name);
1340 /* Store the translation as one argv elt or as two. */
1341 if (arg != 0 && strchr (arginfo, 'j') != 0)
1342 newv[newindex++] = concat (option_map[j].equivalent, arg,
1346 newv[newindex++] = option_map[j].equivalent;
1347 newv[newindex++] = arg;
1350 newv[newindex++] = option_map[j].equivalent;
1358 /* Handle old-fashioned options--just copy them through,
1359 with their arguments. */
1360 else if (argv[i][0] == '-')
1362 const char *p = argv[i] + 1;
1366 if (SWITCH_TAKES_ARG (c) > (p[1] != 0))
1367 nskip += SWITCH_TAKES_ARG (c) - (p[1] != 0);
1368 else if (WORD_SWITCH_TAKES_ARG (p))
1369 nskip += WORD_SWITCH_TAKES_ARG (p);
1370 else if ((c == 'B' || c == 'b' || c == 'x')
1373 else if (! strcmp (p, "Xlinker"))
1375 else if (! strcmp (p, "Xpreprocessor"))
1377 else if (! strcmp (p, "Xassembler"))
1380 /* Watch out for an option at the end of the command line that
1381 is missing arguments, and avoid skipping past the end of the
1383 if (nskip + i > argc)
1388 newv[newindex++] = argv[i++];
1393 /* Ordinary operands, or +e options. */
1394 newv[newindex++] = argv[i++];
1404 skip_whitespace (char *p)
1408 /* A fully-blank line is a delimiter in the SPEC file and shouldn't
1409 be considered whitespace. */
1410 if (p[0] == '\n' && p[1] == '\n' && p[2] == '\n')
1412 else if (*p == '\n' || *p == ' ' || *p == '\t')
1426 /* Structures to keep track of prefixes to try when looking for files. */
1430 const char *prefix; /* String to prepend to the path. */
1431 struct prefix_list *next; /* Next in linked list. */
1432 int require_machine_suffix; /* Don't use without machine_suffix. */
1433 /* 2 means try both machine_suffix and just_machine_suffix. */
1434 int priority; /* Sort key - priority within list. */
1435 int os_multilib; /* 1 if OS multilib scheme should be used,
1436 0 for GCC multilib scheme. */
1441 struct prefix_list *plist; /* List of prefixes to try */
1442 int max_len; /* Max length of a prefix in PLIST */
1443 const char *name; /* Name of this list (used in config stuff) */
1446 /* List of prefixes to try when looking for executables. */
1448 static struct path_prefix exec_prefixes = { 0, 0, "exec" };
1450 /* List of prefixes to try when looking for startup (crt0) files. */
1452 static struct path_prefix startfile_prefixes = { 0, 0, "startfile" };
1454 /* List of prefixes to try when looking for include files. */
1456 static struct path_prefix include_prefixes = { 0, 0, "include" };
1458 /* Suffix to attach to directories searched for commands.
1459 This looks like `MACHINE/VERSION/'. */
1461 static const char *machine_suffix = 0;
1463 /* Suffix to attach to directories searched for commands.
1464 This is just `MACHINE/'. */
1466 static const char *just_machine_suffix = 0;
1468 /* Adjusted value of GCC_EXEC_PREFIX envvar. */
1470 static const char *gcc_exec_prefix;
1472 /* Adjusted value of standard_libexec_prefix. */
1474 static const char *gcc_libexec_prefix;
1476 /* Default prefixes to attach to command names. */
1478 #ifndef STANDARD_STARTFILE_PREFIX_1
1479 #define STANDARD_STARTFILE_PREFIX_1 "/lib/"
1481 #ifndef STANDARD_STARTFILE_PREFIX_2
1482 #define STANDARD_STARTFILE_PREFIX_2 "/usr/lib/"
1485 #ifdef CROSS_DIRECTORY_STRUCTURE /* Don't use these prefixes for a cross compiler. */
1486 #undef MD_EXEC_PREFIX
1487 #undef MD_STARTFILE_PREFIX
1488 #undef MD_STARTFILE_PREFIX_1
1491 /* If no prefixes defined, use the null string, which will disable them. */
1492 #ifndef MD_EXEC_PREFIX
1493 #define MD_EXEC_PREFIX ""
1495 #ifndef MD_STARTFILE_PREFIX
1496 #define MD_STARTFILE_PREFIX ""
1498 #ifndef MD_STARTFILE_PREFIX_1
1499 #define MD_STARTFILE_PREFIX_1 ""
1502 /* These directories are locations set at configure-time based on the
1503 --prefix option provided to configure. Their initializers are
1504 defined in Makefile.in. These paths are not *directly* used when
1505 gcc_exec_prefix is set because, in that case, we know where the
1506 compiler has been installed, and use paths relative to that
1507 location instead. */
1508 static const char *const standard_exec_prefix = STANDARD_EXEC_PREFIX;
1509 static const char *const standard_libexec_prefix = STANDARD_LIBEXEC_PREFIX;
1510 static const char *const standard_bindir_prefix = STANDARD_BINDIR_PREFIX;
1511 static const char *const standard_startfile_prefix = STANDARD_STARTFILE_PREFIX;
1513 /* For native compilers, these are well-known paths containing
1514 components that may be provided by the system. For cross
1515 compilers, these paths are not used. */
1516 static const char *const standard_exec_prefix_1 = "/usr/libexec/gcc/";
1517 static const char *const standard_exec_prefix_2 = "/usr/lib/gcc/";
1518 static const char *md_exec_prefix = MD_EXEC_PREFIX;
1519 static const char *md_startfile_prefix = MD_STARTFILE_PREFIX;
1520 static const char *md_startfile_prefix_1 = MD_STARTFILE_PREFIX_1;
1521 static const char *const standard_startfile_prefix_1
1522 = STANDARD_STARTFILE_PREFIX_1;
1523 static const char *const standard_startfile_prefix_2
1524 = STANDARD_STARTFILE_PREFIX_2;
1526 /* A relative path to be used in finding the location of tools
1527 relative to the driver. */
1528 static const char *const tooldir_base_prefix = TOOLDIR_BASE_PREFIX;
1530 /* Subdirectory to use for locating libraries. Set by
1531 set_multilib_dir based on the compilation options. */
1533 static const char *multilib_dir;
1535 /* Subdirectory to use for locating libraries in OS conventions. Set by
1536 set_multilib_dir based on the compilation options. */
1538 static const char *multilib_os_dir;
1540 /* Structure to keep track of the specs that have been defined so far.
1541 These are accessed using %(specname) or %[specname] in a compiler
1546 /* The following 2 fields must be first */
1547 /* to allow EXTRA_SPECS to be initialized */
1548 const char *name; /* name of the spec. */
1549 const char *ptr; /* available ptr if no static pointer */
1551 /* The following fields are not initialized */
1552 /* by EXTRA_SPECS */
1553 const char **ptr_spec; /* pointer to the spec itself. */
1554 struct spec_list *next; /* Next spec in linked list. */
1555 int name_len; /* length of the name */
1556 int alloc_p; /* whether string was allocated */
1559 #define INIT_STATIC_SPEC(NAME,PTR) \
1560 { NAME, NULL, PTR, (struct spec_list *) 0, sizeof (NAME) - 1, 0 }
1562 /* List of statically defined specs. */
1563 static struct spec_list static_specs[] =
1565 INIT_STATIC_SPEC ("asm", &asm_spec),
1566 INIT_STATIC_SPEC ("asm_debug", &asm_debug),
1567 INIT_STATIC_SPEC ("asm_final", &asm_final_spec),
1568 INIT_STATIC_SPEC ("asm_options", &asm_options),
1569 INIT_STATIC_SPEC ("invoke_as", &invoke_as),
1570 INIT_STATIC_SPEC ("cpp", &cpp_spec),
1571 INIT_STATIC_SPEC ("cpp_options", &cpp_options),
1572 INIT_STATIC_SPEC ("cpp_debug_options", &cpp_debug_options),
1573 INIT_STATIC_SPEC ("cpp_unique_options", &cpp_unique_options),
1574 INIT_STATIC_SPEC ("trad_capable_cpp", &trad_capable_cpp),
1575 INIT_STATIC_SPEC ("cc1", &cc1_spec),
1576 INIT_STATIC_SPEC ("cc1_options", &cc1_options),
1577 INIT_STATIC_SPEC ("cc1plus", &cc1plus_spec),
1578 INIT_STATIC_SPEC ("link_gcc_c_sequence", &link_gcc_c_sequence_spec),
1579 INIT_STATIC_SPEC ("link_ssp", &link_ssp_spec),
1580 INIT_STATIC_SPEC ("endfile", &endfile_spec),
1581 INIT_STATIC_SPEC ("link", &link_spec),
1582 INIT_STATIC_SPEC ("lib", &lib_spec),
1583 INIT_STATIC_SPEC ("mfwrap", &mfwrap_spec),
1584 INIT_STATIC_SPEC ("mflib", &mflib_spec),
1585 INIT_STATIC_SPEC ("link_gomp", &link_gomp_spec),
1586 INIT_STATIC_SPEC ("libgcc", &libgcc_spec),
1587 INIT_STATIC_SPEC ("startfile", &startfile_spec),
1588 INIT_STATIC_SPEC ("switches_need_spaces", &switches_need_spaces),
1589 INIT_STATIC_SPEC ("cross_compile", &cross_compile),
1590 INIT_STATIC_SPEC ("version", &compiler_version),
1591 INIT_STATIC_SPEC ("multilib", &multilib_select),
1592 INIT_STATIC_SPEC ("multilib_defaults", &multilib_defaults),
1593 INIT_STATIC_SPEC ("multilib_extra", &multilib_extra),
1594 INIT_STATIC_SPEC ("multilib_matches", &multilib_matches),
1595 INIT_STATIC_SPEC ("multilib_exclusions", &multilib_exclusions),
1596 INIT_STATIC_SPEC ("multilib_options", &multilib_options),
1597 INIT_STATIC_SPEC ("linker", &linker_name_spec),
1598 INIT_STATIC_SPEC ("link_libgcc", &link_libgcc_spec),
1599 INIT_STATIC_SPEC ("md_exec_prefix", &md_exec_prefix),
1600 INIT_STATIC_SPEC ("md_startfile_prefix", &md_startfile_prefix),
1601 INIT_STATIC_SPEC ("md_startfile_prefix_1", &md_startfile_prefix_1),
1602 INIT_STATIC_SPEC ("startfile_prefix_spec", &startfile_prefix_spec),
1603 INIT_STATIC_SPEC ("sysroot_spec", &sysroot_spec),
1604 INIT_STATIC_SPEC ("sysroot_suffix_spec", &sysroot_suffix_spec),
1605 INIT_STATIC_SPEC ("sysroot_hdrs_suffix_spec", &sysroot_hdrs_suffix_spec),
1608 #ifdef EXTRA_SPECS /* additional specs needed */
1609 /* Structure to keep track of just the first two args of a spec_list.
1610 That is all that the EXTRA_SPECS macro gives us. */
1613 const char *const name;
1614 const char *const ptr;
1617 static const struct spec_list_1 extra_specs_1[] = { EXTRA_SPECS };
1618 static struct spec_list *extra_specs = (struct spec_list *) 0;
1621 /* List of dynamically allocates specs that have been defined so far. */
1623 static struct spec_list *specs = (struct spec_list *) 0;
1625 /* List of static spec functions. */
1627 static const struct spec_function static_spec_functions[] =
1629 { "getenv", getenv_spec_function },
1630 { "if-exists", if_exists_spec_function },
1631 { "if-exists-else", if_exists_else_spec_function },
1632 { "replace-outfile", replace_outfile_spec_function },
1633 { "version-compare", version_compare_spec_function },
1634 { "include", include_spec_function },
1635 { "print-asm-header", print_asm_header_spec_function },
1636 #ifdef EXTRA_SPEC_FUNCTIONS
1637 EXTRA_SPEC_FUNCTIONS
1642 static int processing_spec_function;
1644 /* Add appropriate libgcc specs to OBSTACK, taking into account
1645 various permutations of -shared-libgcc, -shared, and such. */
1647 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
1649 #ifndef USE_LD_AS_NEEDED
1650 #define USE_LD_AS_NEEDED 0
1654 init_gcc_specs (struct obstack *obstack, const char *shared_name,
1655 const char *static_name, const char *eh_name)
1659 buf = concat ("%{static|static-libgcc:", static_name, " ", eh_name, "}"
1660 "%{!static:%{!static-libgcc:"
1661 #if USE_LD_AS_NEEDED
1662 "%{!shared-libgcc:",
1663 static_name, " --as-needed ", shared_name, " --no-as-needed"
1666 shared_name, "%{!shared: ", static_name, "}"
1670 "%{!shared-libgcc:", static_name, " ", eh_name, "}"
1671 "%{shared-libgcc:", shared_name, " ", static_name, "}"
1675 "%{shared-libgcc:", shared_name, "}"
1676 "%{!shared-libgcc:", static_name, "}"
1679 "%{shared:", shared_name, "}"
1684 obstack_grow (obstack, buf, strlen (buf));
1687 #endif /* ENABLE_SHARED_LIBGCC */
1689 /* Initialize the specs lookup routines. */
1694 struct spec_list *next = (struct spec_list *) 0;
1695 struct spec_list *sl = (struct spec_list *) 0;
1699 return; /* Already initialized. */
1702 notice ("Using built-in specs.\n");
1705 extra_specs = xcalloc (sizeof (struct spec_list),
1706 ARRAY_SIZE (extra_specs_1));
1708 for (i = ARRAY_SIZE (extra_specs_1) - 1; i >= 0; i--)
1710 sl = &extra_specs[i];
1711 sl->name = extra_specs_1[i].name;
1712 sl->ptr = extra_specs_1[i].ptr;
1714 sl->name_len = strlen (sl->name);
1715 sl->ptr_spec = &sl->ptr;
1720 /* Initialize here, not in definition. The IRIX 6 O32 cc sometimes chokes
1721 on ?: in file-scope variable initializations. */
1722 asm_debug = ASM_DEBUG_SPEC;
1724 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--)
1726 sl = &static_specs[i];
1731 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
1732 /* ??? If neither -shared-libgcc nor --static-libgcc was
1733 seen, then we should be making an educated guess. Some proposed
1734 heuristics for ELF include:
1736 (1) If "-Wl,--export-dynamic", then it's a fair bet that the
1737 program will be doing dynamic loading, which will likely
1738 need the shared libgcc.
1740 (2) If "-ldl", then it's also a fair bet that we're doing
1743 (3) For each ET_DYN we're linking against (either through -lfoo
1744 or /some/path/foo.so), check to see whether it or one of
1745 its dependencies depends on a shared libgcc.
1749 If the runtime is fixed to look for program headers instead
1750 of calling __register_frame_info at all, for each object,
1751 use the shared libgcc if any EH symbol referenced.
1753 If crtstuff is fixed to not invoke __register_frame_info
1754 automatically, for each object, use the shared libgcc if
1755 any non-empty unwind section found.
1757 Doing any of this probably requires invoking an external program to
1758 do the actual object file scanning. */
1760 const char *p = libgcc_spec;
1763 /* Transform the extant libgcc_spec into one that uses the shared libgcc
1764 when given the proper command line arguments. */
1767 if (in_sep && *p == '-' && strncmp (p, "-lgcc", 5) == 0)
1769 init_gcc_specs (&obstack,
1771 #ifdef USE_LIBUNWIND_EXCEPTIONS
1777 #ifdef USE_LIBUNWIND_EXCEPTIONS
1778 # ifdef HAVE_LD_STATIC_DYNAMIC
1779 " %{!static:-Bstatic} -lunwind %{!static:-Bdynamic}"
1789 else if (in_sep && *p == 'l' && strncmp (p, "libgcc.a%s", 10) == 0)
1791 /* Ug. We don't know shared library extensions. Hope that
1792 systems that use this form don't do shared libraries. */
1793 init_gcc_specs (&obstack,
1797 #ifdef USE_LIBUNWIND_EXCEPTIONS
1806 obstack_1grow (&obstack, *p);
1807 in_sep = (*p == ' ');
1812 obstack_1grow (&obstack, '\0');
1813 libgcc_spec = XOBFINISH (&obstack, const char *);
1816 #ifdef USE_AS_TRADITIONAL_FORMAT
1817 /* Prepend "--traditional-format" to whatever asm_spec we had before. */
1819 static const char tf[] = "--traditional-format ";
1820 obstack_grow (&obstack, tf, sizeof(tf) - 1);
1821 obstack_grow0 (&obstack, asm_spec, strlen (asm_spec));
1822 asm_spec = XOBFINISH (&obstack, const char *);
1826 /* Prepend LINK_EH_SPEC to whatever link_spec we had before. */
1827 obstack_grow (&obstack, LINK_EH_SPEC, sizeof(LINK_EH_SPEC) - 1);
1828 obstack_grow0 (&obstack, link_spec, strlen (link_spec));
1829 link_spec = XOBFINISH (&obstack, const char *);
1835 /* Change the value of spec NAME to SPEC. If SPEC is empty, then the spec is
1836 removed; If the spec starts with a + then SPEC is added to the end of the
1840 set_spec (const char *name, const char *spec)
1842 struct spec_list *sl;
1843 const char *old_spec;
1844 int name_len = strlen (name);
1847 /* If this is the first call, initialize the statically allocated specs. */
1850 struct spec_list *next = (struct spec_list *) 0;
1851 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--)
1853 sl = &static_specs[i];
1860 /* See if the spec already exists. */
1861 for (sl = specs; sl; sl = sl->next)
1862 if (name_len == sl->name_len && !strcmp (sl->name, name))
1867 /* Not found - make it. */
1868 sl = XNEW (struct spec_list);
1869 sl->name = xstrdup (name);
1870 sl->name_len = name_len;
1871 sl->ptr_spec = &sl->ptr;
1873 *(sl->ptr_spec) = "";
1878 old_spec = *(sl->ptr_spec);
1879 *(sl->ptr_spec) = ((spec[0] == '+' && ISSPACE ((unsigned char)spec[1]))
1880 ? concat (old_spec, spec + 1, NULL)
1885 notice ("Setting spec %s to '%s'\n\n", name, *(sl->ptr_spec));
1888 /* Free the old spec. */
1889 if (old_spec && sl->alloc_p)
1890 free (CONST_CAST(old_spec));
1895 /* Accumulate a command (program name and args), and run it. */
1897 /* Vector of pointers to arguments in the current line of specifications. */
1899 static const char **argbuf;
1901 /* Number of elements allocated in argbuf. */
1903 static int argbuf_length;
1905 /* Number of elements in argbuf currently in use (containing args). */
1907 static int argbuf_index;
1909 /* Position in the argbuf array containing the name of the output file
1910 (the value associated with the "-o" flag). */
1912 static int have_o_argbuf_index = 0;
1914 /* Were the options -c or -S passed. */
1915 static int have_c = 0;
1917 /* Was the option -o passed. */
1918 static int have_o = 0;
1920 /* This is the list of suffixes and codes (%g/%u/%U/%j) and the associated
1921 temp file. If the HOST_BIT_BUCKET is used for %j, no entry is made for
1924 static struct temp_name {
1925 const char *suffix; /* suffix associated with the code. */
1926 int length; /* strlen (suffix). */
1927 int unique; /* Indicates whether %g or %u/%U was used. */
1928 const char *filename; /* associated filename. */
1929 int filename_length; /* strlen (filename). */
1930 struct temp_name *next;
1933 /* Number of commands executed so far. */
1935 static int execution_count;
1937 /* Number of commands that exited with a signal. */
1939 static int signal_count;
1941 /* Name with which this program was invoked. */
1943 static const char *programname;
1945 /* Allocate the argument vector. */
1951 argbuf = XNEWVEC (const char *, argbuf_length);
1954 /* Clear out the vector of arguments (after a command is executed). */
1962 /* Add one argument to the vector at the end.
1963 This is done when a space is seen or at the end of the line.
1964 If DELETE_ALWAYS is nonzero, the arg is a filename
1965 and the file should be deleted eventually.
1966 If DELETE_FAILURE is nonzero, the arg is a filename
1967 and the file should be deleted if this compilation fails. */
1970 store_arg (const char *arg, int delete_always, int delete_failure)
1972 if (argbuf_index + 1 == argbuf_length)
1973 argbuf = xrealloc (argbuf, (argbuf_length *= 2) * sizeof (const char *));
1975 argbuf[argbuf_index++] = arg;
1976 argbuf[argbuf_index] = 0;
1978 if (strcmp (arg, "-o") == 0)
1979 have_o_argbuf_index = argbuf_index;
1980 if (delete_always || delete_failure)
1981 record_temp_file (arg, delete_always, delete_failure);
1984 /* Load specs from a file name named FILENAME, replacing occurrences of
1985 various different types of line-endings, \r\n, \n\r and just \r, with
1989 load_specs (const char *filename)
1993 struct stat statbuf;
2000 notice ("Reading specs from %s\n", filename);
2002 /* Open and stat the file. */
2003 desc = open (filename, O_RDONLY, 0);
2005 pfatal_with_name (filename);
2006 if (stat (filename, &statbuf) < 0)
2007 pfatal_with_name (filename);
2009 /* Read contents of file into BUFFER. */
2010 buffer = XNEWVEC (char, statbuf.st_size + 1);
2011 readlen = read (desc, buffer, (unsigned) statbuf.st_size);
2013 pfatal_with_name (filename);
2014 buffer[readlen] = 0;
2017 specs = XNEWVEC (char, readlen + 1);
2019 for (buffer_p = buffer; buffer_p && *buffer_p; buffer_p++)
2025 if (buffer_p > buffer && *(buffer_p - 1) == '\n') /* \n\r */
2027 else if (*(buffer_p + 1) == '\n') /* \r\n */
2041 /* Read compilation specs from a file named FILENAME,
2042 replacing the default ones.
2044 A suffix which starts with `*' is a definition for
2045 one of the machine-specific sub-specs. The "suffix" should be
2046 *asm, *cc1, *cpp, *link, *startfile, etc.
2047 The corresponding spec is stored in asm_spec, etc.,
2048 rather than in the `compilers' vector.
2050 Anything invalid in the file is a fatal error. */
2053 read_specs (const char *filename, int main_p)
2058 buffer = load_specs (filename);
2060 /* Scan BUFFER for specs, putting them in the vector. */
2066 char *in, *out, *p1, *p2, *p3;
2068 /* Advance P in BUFFER to the next nonblank nocomment line. */
2069 p = skip_whitespace (p);
2073 /* Is this a special command that starts with '%'? */
2074 /* Don't allow this for the main specs file, since it would
2075 encourage people to overwrite it. */
2076 if (*p == '%' && !main_p)
2079 while (*p && *p != '\n')
2085 if (!strncmp (p1, "%include", sizeof ("%include") - 1)
2086 && (p1[sizeof "%include" - 1] == ' '
2087 || p1[sizeof "%include" - 1] == '\t'))
2091 p1 += sizeof ("%include");
2092 while (*p1 == ' ' || *p1 == '\t')
2095 if (*p1++ != '<' || p[-2] != '>')
2096 fatal ("specs %%include syntax malformed after %ld characters",
2097 (long) (p1 - buffer + 1));
2100 new_filename = find_a_file (&startfile_prefixes, p1, R_OK, true);
2101 read_specs (new_filename ? new_filename : p1, FALSE);
2104 else if (!strncmp (p1, "%include_noerr", sizeof "%include_noerr" - 1)
2105 && (p1[sizeof "%include_noerr" - 1] == ' '
2106 || p1[sizeof "%include_noerr" - 1] == '\t'))
2110 p1 += sizeof "%include_noerr";
2111 while (*p1 == ' ' || *p1 == '\t')
2114 if (*p1++ != '<' || p[-2] != '>')
2115 fatal ("specs %%include syntax malformed after %ld characters",
2116 (long) (p1 - buffer + 1));
2119 new_filename = find_a_file (&startfile_prefixes, p1, R_OK, true);
2121 read_specs (new_filename, FALSE);
2122 else if (verbose_flag)
2123 notice ("could not find specs file %s\n", p1);
2126 else if (!strncmp (p1, "%rename", sizeof "%rename" - 1)
2127 && (p1[sizeof "%rename" - 1] == ' '
2128 || p1[sizeof "%rename" - 1] == '\t'))
2131 struct spec_list *sl;
2132 struct spec_list *newsl;
2134 /* Get original name. */
2135 p1 += sizeof "%rename";
2136 while (*p1 == ' ' || *p1 == '\t')
2139 if (! ISALPHA ((unsigned char) *p1))
2140 fatal ("specs %%rename syntax malformed after %ld characters",
2141 (long) (p1 - buffer));
2144 while (*p2 && !ISSPACE ((unsigned char) *p2))
2147 if (*p2 != ' ' && *p2 != '\t')
2148 fatal ("specs %%rename syntax malformed after %ld characters",
2149 (long) (p2 - buffer));
2153 while (*p2 == ' ' || *p2 == '\t')
2156 if (! ISALPHA ((unsigned char) *p2))
2157 fatal ("specs %%rename syntax malformed after %ld characters",
2158 (long) (p2 - buffer));
2160 /* Get new spec name. */
2162 while (*p3 && !ISSPACE ((unsigned char) *p3))
2166 fatal ("specs %%rename syntax malformed after %ld characters",
2167 (long) (p3 - buffer));
2170 for (sl = specs; sl; sl = sl->next)
2171 if (name_len == sl->name_len && !strcmp (sl->name, p1))
2175 fatal ("specs %s spec was not found to be renamed", p1);
2177 if (strcmp (p1, p2) == 0)
2180 for (newsl = specs; newsl; newsl = newsl->next)
2181 if (strcmp (newsl->name, p2) == 0)
2182 fatal ("%s: attempt to rename spec '%s' to already defined spec '%s'",
2187 notice ("rename spec %s to %s\n", p1, p2);
2189 notice ("spec is '%s'\n\n", *(sl->ptr_spec));
2193 set_spec (p2, *(sl->ptr_spec));
2195 free (CONST_CAST (*(sl->ptr_spec)));
2197 *(sl->ptr_spec) = "";
2202 fatal ("specs unknown %% command after %ld characters",
2203 (long) (p1 - buffer));
2206 /* Find the colon that should end the suffix. */
2208 while (*p1 && *p1 != ':' && *p1 != '\n')
2211 /* The colon shouldn't be missing. */
2213 fatal ("specs file malformed after %ld characters",
2214 (long) (p1 - buffer));
2216 /* Skip back over trailing whitespace. */
2218 while (p2 > buffer && (p2[-1] == ' ' || p2[-1] == '\t'))
2221 /* Copy the suffix to a string. */
2222 suffix = save_string (p, p2 - p);
2223 /* Find the next line. */
2224 p = skip_whitespace (p1 + 1);
2226 fatal ("specs file malformed after %ld characters",
2227 (long) (p - buffer));
2230 /* Find next blank line or end of string. */
2231 while (*p1 && !(*p1 == '\n' && (p1[1] == '\n' || p1[1] == '\0')))
2234 /* Specs end at the blank line and do not include the newline. */
2235 spec = save_string (p, p1 - p);
2238 /* Delete backslash-newline sequences from the spec. */
2243 if (in[0] == '\\' && in[1] == '\n')
2245 else if (in[0] == '#')
2246 while (*in && *in != '\n')
2254 if (suffix[0] == '*')
2256 if (! strcmp (suffix, "*link_command"))
2257 link_command_spec = spec;
2259 set_spec (suffix + 1, spec);
2263 /* Add this pair to the vector. */
2265 = xrealloc (compilers,
2266 (n_compilers + 2) * sizeof (struct compiler));
2268 compilers[n_compilers].suffix = suffix;
2269 compilers[n_compilers].spec = spec;
2271 memset (&compilers[n_compilers], 0, sizeof compilers[n_compilers]);
2275 link_command_spec = spec;
2278 if (link_command_spec == 0)
2279 fatal ("spec file has no spec for linking");
2282 /* Record the names of temporary files we tell compilers to write,
2283 and delete them at the end of the run. */
2285 /* This is the common prefix we use to make temp file names.
2286 It is chosen once for each run of this program.
2287 It is substituted into a spec by %g or %j.
2288 Thus, all temp file names contain this prefix.
2289 In practice, all temp file names start with this prefix.
2291 This prefix comes from the envvar TMPDIR if it is defined;
2292 otherwise, from the P_tmpdir macro if that is defined;
2293 otherwise, in /usr/tmp or /tmp;
2294 or finally the current directory if all else fails. */
2296 static const char *temp_filename;
2298 /* Length of the prefix. */
2300 static int temp_filename_length;
2302 /* Define the list of temporary files to delete. */
2307 struct temp_file *next;
2310 /* Queue of files to delete on success or failure of compilation. */
2311 static struct temp_file *always_delete_queue;
2312 /* Queue of files to delete on failure of compilation. */
2313 static struct temp_file *failure_delete_queue;
2315 /* Record FILENAME as a file to be deleted automatically.
2316 ALWAYS_DELETE nonzero means delete it if all compilation succeeds;
2317 otherwise delete it in any case.
2318 FAIL_DELETE nonzero means delete it if a compilation step fails;
2319 otherwise delete it in any case. */
2322 record_temp_file (const char *filename, int always_delete, int fail_delete)
2324 char *const name = xstrdup (filename);
2328 struct temp_file *temp;
2329 for (temp = always_delete_queue; temp; temp = temp->next)
2330 if (! strcmp (name, temp->name))
2333 temp = XNEW (struct temp_file);
2334 temp->next = always_delete_queue;
2336 always_delete_queue = temp;
2343 struct temp_file *temp;
2344 for (temp = failure_delete_queue; temp; temp = temp->next)
2345 if (! strcmp (name, temp->name))
2348 temp = XNEW (struct temp_file);
2349 temp->next = failure_delete_queue;
2351 failure_delete_queue = temp;
2357 /* Delete all the temporary files whose names we previously recorded. */
2359 #ifndef DELETE_IF_ORDINARY
2360 #define DELETE_IF_ORDINARY(NAME,ST,VERBOSE_FLAG) \
2363 if (stat (NAME, &ST) >= 0 && S_ISREG (ST.st_mode)) \
2364 if (unlink (NAME) < 0) \
2366 perror_with_name (NAME); \
2371 delete_if_ordinary (const char *name)
2377 printf ("Delete %s? (y or n) ", name);
2381 while ((c = getchar ()) != '\n' && c != EOF)
2384 if (i == 'y' || i == 'Y')
2386 DELETE_IF_ORDINARY (name, st, verbose_flag);
2390 delete_temp_files (void)
2392 struct temp_file *temp;
2394 for (temp = always_delete_queue; temp; temp = temp->next)
2395 delete_if_ordinary (temp->name);
2396 always_delete_queue = 0;
2399 /* Delete all the files to be deleted on error. */
2402 delete_failure_queue (void)
2404 struct temp_file *temp;
2406 for (temp = failure_delete_queue; temp; temp = temp->next)
2407 delete_if_ordinary (temp->name);
2411 clear_failure_queue (void)
2413 failure_delete_queue = 0;
2416 /* Call CALLBACK for each path in PATHS, breaking out early if CALLBACK
2418 If DO_MULTI is true iterate over the paths twice, first with multilib
2419 suffix then without, otherwise iterate over the paths once without
2420 adding a multilib suffix. When DO_MULTI is true, some attempt is made
2421 to avoid visiting the same path twice, but we could do better. For
2422 instance, /usr/lib/../lib is considered different from /usr/lib.
2423 At least EXTRA_SPACE chars past the end of the path passed to
2424 CALLBACK are available for use by the callback.
2425 CALLBACK_INFO allows extra parameters to be passed to CALLBACK.
2427 Returns the value returned by CALLBACK. */
2430 for_each_path (const struct path_prefix *paths,
2433 void *(*callback) (char *, void *),
2434 void *callback_info)
2436 struct prefix_list *pl;
2437 const char *multi_dir = NULL;
2438 const char *multi_os_dir = NULL;
2439 const char *multi_suffix;
2440 const char *just_multi_suffix;
2443 bool skip_multi_dir = false;
2444 bool skip_multi_os_dir = false;
2446 multi_suffix = machine_suffix;
2447 just_multi_suffix = just_machine_suffix;
2448 if (do_multi && multilib_dir && strcmp (multilib_dir, ".") != 0)
2450 multi_dir = concat (multilib_dir, dir_separator_str, NULL);
2451 multi_suffix = concat (multi_suffix, multi_dir, NULL);
2452 just_multi_suffix = concat (just_multi_suffix, multi_dir, NULL);
2454 if (do_multi && multilib_os_dir && strcmp (multilib_os_dir, ".") != 0)
2455 multi_os_dir = concat (multilib_os_dir, dir_separator_str, NULL);
2459 size_t multi_dir_len = 0;
2460 size_t multi_os_dir_len = 0;
2462 size_t just_suffix_len;
2466 multi_dir_len = strlen (multi_dir);
2468 multi_os_dir_len = strlen (multi_os_dir);
2469 suffix_len = strlen (multi_suffix);
2470 just_suffix_len = strlen (just_multi_suffix);
2474 len = paths->max_len + extra_space + 1;
2475 if (suffix_len > multi_os_dir_len)
2478 len += multi_os_dir_len;
2479 path = XNEWVEC (char, len);
2482 for (pl = paths->plist; pl != 0; pl = pl->next)
2484 len = strlen (pl->prefix);
2485 memcpy (path, pl->prefix, len);
2487 /* Look first in MACHINE/VERSION subdirectory. */
2488 if (!skip_multi_dir)
2490 memcpy (path + len, multi_suffix, suffix_len + 1);
2491 ret = callback (path, callback_info);
2496 /* Some paths are tried with just the machine (ie. target)
2497 subdir. This is used for finding as, ld, etc. */
2499 && pl->require_machine_suffix == 2)
2501 memcpy (path + len, just_multi_suffix, just_suffix_len + 1);
2502 ret = callback (path, callback_info);
2507 /* Now try the base path. */
2508 if (!pl->require_machine_suffix
2509 && !(pl->os_multilib ? skip_multi_os_dir : skip_multi_dir))
2511 const char *this_multi;
2512 size_t this_multi_len;
2514 if (pl->os_multilib)
2516 this_multi = multi_os_dir;
2517 this_multi_len = multi_os_dir_len;
2521 this_multi = multi_dir;
2522 this_multi_len = multi_dir_len;
2526 memcpy (path + len, this_multi, this_multi_len + 1);
2530 ret = callback (path, callback_info);
2538 if (multi_dir == NULL && multi_os_dir == NULL)
2541 /* Run through the paths again, this time without multilibs.
2542 Don't repeat any we have already seen. */
2545 free (CONST_CAST (multi_dir));
2547 free (CONST_CAST (multi_suffix));
2548 multi_suffix = machine_suffix;
2549 free (CONST_CAST (just_multi_suffix));
2550 just_multi_suffix = just_machine_suffix;
2553 skip_multi_dir = true;
2556 free (CONST_CAST (multi_os_dir));
2557 multi_os_dir = NULL;
2560 skip_multi_os_dir = true;
2565 free (CONST_CAST (multi_dir));
2566 free (CONST_CAST (multi_suffix));
2567 free (CONST_CAST (just_multi_suffix));
2570 free (CONST_CAST (multi_os_dir));
2576 /* Callback for build_search_list. Adds path to obstack being built. */
2578 struct add_to_obstack_info {
2585 add_to_obstack (char *path, void *data)
2587 struct add_to_obstack_info *info = data;
2589 if (info->check_dir && !is_directory (path, false))
2592 if (!info->first_time)
2593 obstack_1grow (info->ob, PATH_SEPARATOR);
2595 obstack_grow (info->ob, path, strlen (path));
2597 info->first_time = false;
2601 /* Build a list of search directories from PATHS.
2602 PREFIX is a string to prepend to the list.
2603 If CHECK_DIR_P is true we ensure the directory exists.
2604 If DO_MULTI is true, multilib paths are output first, then
2606 This is used mostly by putenv_from_prefixes so we use `collect_obstack'.
2607 It is also used by the --print-search-dirs flag. */
2610 build_search_list (const struct path_prefix *paths, const char *prefix,
2611 bool check_dir, bool do_multi)
2613 struct add_to_obstack_info info;
2615 info.ob = &collect_obstack;
2616 info.check_dir = check_dir;
2617 info.first_time = true;
2619 obstack_grow (&collect_obstack, prefix, strlen (prefix));
2620 obstack_1grow (&collect_obstack, '=');
2622 for_each_path (paths, do_multi, 0, add_to_obstack, &info);
2624 obstack_1grow (&collect_obstack, '\0');
2625 return XOBFINISH (&collect_obstack, char *);
2628 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
2632 putenv_from_prefixes (const struct path_prefix *paths, const char *env_var,
2635 putenv (build_search_list (paths, env_var, true, do_multi));
2638 /* Check whether NAME can be accessed in MODE. This is like access,
2639 except that it never considers directories to be executable. */
2642 access_check (const char *name, int mode)
2648 if (stat (name, &st) < 0
2649 || S_ISDIR (st.st_mode))
2653 return access (name, mode);
2656 /* Callback for find_a_file. Appends the file name to the directory
2657 path. If the resulting file exists in the right mode, return the
2658 full pathname to the file. */
2660 struct file_at_path_info {
2669 file_at_path (char *path, void *data)
2671 struct file_at_path_info *info = data;
2672 size_t len = strlen (path);
2674 memcpy (path + len, info->name, info->name_len);
2675 len += info->name_len;
2677 /* Some systems have a suffix for executable files.
2678 So try appending that first. */
2679 if (info->suffix_len)
2681 memcpy (path + len, info->suffix, info->suffix_len + 1);
2682 if (access_check (path, info->mode) == 0)
2687 if (access_check (path, info->mode) == 0)
2693 /* Search for NAME using the prefix list PREFIXES. MODE is passed to
2694 access to check permissions. If DO_MULTI is true, search multilib
2695 paths then non-multilib paths, otherwise do not search multilib paths.
2696 Return 0 if not found, otherwise return its name, allocated with malloc. */
2699 find_a_file (const struct path_prefix *pprefix, const char *name, int mode,
2702 struct file_at_path_info info;
2704 #ifdef DEFAULT_ASSEMBLER
2705 if (! strcmp (name, "as") && access (DEFAULT_ASSEMBLER, mode) == 0)
2706 return xstrdup (DEFAULT_ASSEMBLER);
2709 #ifdef DEFAULT_LINKER
2710 if (! strcmp(name, "ld") && access (DEFAULT_LINKER, mode) == 0)
2711 return xstrdup (DEFAULT_LINKER);
2714 /* Determine the filename to execute (special case for absolute paths). */
2716 if (IS_ABSOLUTE_PATH (name))
2718 if (access (name, mode) == 0)
2719 return xstrdup (name);
2725 info.suffix = (mode & X_OK) != 0 ? HOST_EXECUTABLE_SUFFIX : "";
2726 info.name_len = strlen (info.name);
2727 info.suffix_len = strlen (info.suffix);
2730 return for_each_path (pprefix, do_multi, info.name_len + info.suffix_len,
2731 file_at_path, &info);
2734 /* Ranking of prefixes in the sort list. -B prefixes are put before
2737 enum path_prefix_priority
2739 PREFIX_PRIORITY_B_OPT,
2740 PREFIX_PRIORITY_LAST
2743 /* Add an entry for PREFIX in PLIST. The PLIST is kept in ascending
2744 order according to PRIORITY. Within each PRIORITY, new entries are
2747 If WARN is nonzero, we will warn if no file is found
2748 through this prefix. WARN should point to an int
2749 which will be set to 1 if this entry is used.
2751 COMPONENT is the value to be passed to update_path.
2753 REQUIRE_MACHINE_SUFFIX is 1 if this prefix can't be used without
2754 the complete value of machine_suffix.
2755 2 means try both machine_suffix and just_machine_suffix. */
2758 add_prefix (struct path_prefix *pprefix, const char *prefix,
2759 const char *component, /* enum prefix_priority */ int priority,
2760 int require_machine_suffix, int os_multilib)
2762 struct prefix_list *pl, **prev;
2765 for (prev = &pprefix->plist;
2766 (*prev) != NULL && (*prev)->priority <= priority;
2767 prev = &(*prev)->next)
2770 /* Keep track of the longest prefix. */
2772 prefix = update_path (prefix, component);
2773 len = strlen (prefix);
2774 if (len > pprefix->max_len)
2775 pprefix->max_len = len;
2777 pl = XNEW (struct prefix_list);
2778 pl->prefix = prefix;
2779 pl->require_machine_suffix = require_machine_suffix;
2780 pl->priority = priority;
2781 pl->os_multilib = os_multilib;
2783 /* Insert after PREV. */
2788 /* Same as add_prefix, but prepending target_system_root to prefix. */
2789 /* The target_system_root prefix has been relocated by gcc_exec_prefix. */
2791 add_sysrooted_prefix (struct path_prefix *pprefix, const char *prefix,
2792 const char *component,
2793 /* enum prefix_priority */ int priority,
2794 int require_machine_suffix, int os_multilib)
2796 if (!IS_ABSOLUTE_PATH (prefix))
2797 fatal ("system path '%s' is not absolute", prefix);
2799 if (target_system_root)
2801 if (target_sysroot_suffix)
2802 prefix = concat (target_sysroot_suffix, prefix, NULL);
2803 prefix = concat (target_system_root, prefix, NULL);
2805 /* We have to override this because GCC's notion of sysroot
2806 moves along with GCC. */
2810 add_prefix (pprefix, prefix, component, priority,
2811 require_machine_suffix, os_multilib);
2814 /* Execute the command specified by the arguments on the current line of spec.
2815 When using pipes, this includes several piped-together commands
2816 with `|' between them.
2818 Return 0 if successful, -1 if failed. */
2824 int n_commands; /* # of command. */
2826 struct pex_obj *pex;
2829 const char *prog; /* program name. */
2830 const char **argv; /* vector of args. */
2833 struct command *commands; /* each command buffer with above info. */
2835 gcc_assert (!processing_spec_function);
2837 /* Count # of piped commands. */
2838 for (n_commands = 1, i = 0; i < argbuf_index; i++)
2839 if (strcmp (argbuf[i], "|") == 0)
2842 /* Get storage for each command. */
2843 commands = alloca (n_commands * sizeof (struct command));
2845 /* Split argbuf into its separate piped processes,
2846 and record info about each one.
2847 Also search for the programs that are to be run. */
2849 commands[0].prog = argbuf[0]; /* first command. */
2850 commands[0].argv = &argbuf[0];
2851 string = find_a_file (&exec_prefixes, commands[0].prog, X_OK, false);
2854 commands[0].argv[0] = string;
2856 for (n_commands = 1, i = 0; i < argbuf_index; i++)
2857 if (strcmp (argbuf[i], "|") == 0)
2858 { /* each command. */
2859 #if defined (__MSDOS__) || defined (OS2) || defined (VMS)
2860 fatal ("-pipe not supported");
2862 argbuf[i] = 0; /* termination of command args. */
2863 commands[n_commands].prog = argbuf[i + 1];
2864 commands[n_commands].argv = &argbuf[i + 1];
2865 string = find_a_file (&exec_prefixes, commands[n_commands].prog,
2868 commands[n_commands].argv[0] = string;
2872 argbuf[argbuf_index] = 0;
2874 /* If -v, print what we are about to do, and maybe query. */
2878 /* For help listings, put a blank line between sub-processes. */
2879 if (print_help_list)
2880 fputc ('\n', stderr);
2882 /* Print each piped command as a separate line. */
2883 for (i = 0; i < n_commands; i++)
2885 const char *const *j;
2887 if (verbose_only_flag)
2889 for (j = commands[i].argv; *j; j++)
2892 fprintf (stderr, " \"");
2893 for (p = *j; *p; ++p)
2895 if (*p == '"' || *p == '\\' || *p == '$')
2896 fputc ('\\', stderr);
2899 fputc ('"', stderr);
2903 for (j = commands[i].argv; *j; j++)
2904 fprintf (stderr, " %s", *j);
2906 /* Print a pipe symbol after all but the last command. */
2907 if (i + 1 != n_commands)
2908 fprintf (stderr, " |");
2909 fprintf (stderr, "\n");
2912 if (verbose_only_flag != 0)
2914 /* verbose_only_flag should act as if the spec was
2915 executed, so increment execution_count before
2916 returning. This prevents spurious warnings about
2917 unused linker input files, etc. */
2922 notice ("\nGo ahead? (y or n) ");
2926 while (getchar () != '\n')
2929 if (i != 'y' && i != 'Y')
2934 #ifdef ENABLE_VALGRIND_CHECKING
2935 /* Run the each command through valgrind. To simplify prepending the
2936 path to valgrind and the option "-q" (for quiet operation unless
2937 something triggers), we allocate a separate argv array. */
2939 for (i = 0; i < n_commands; i++)
2945 for (argc = 0; commands[i].argv[argc] != NULL; argc++)
2948 argv = alloca ((argc + 3) * sizeof (char *));
2950 argv[0] = VALGRIND_PATH;
2952 for (j = 2; j < argc + 2; j++)
2953 argv[j] = commands[i].argv[j - 2];
2956 commands[i].argv = argv;
2957 commands[i].prog = argv[0];
2961 /* Run each piped subprocess. */
2963 pex = pex_init (PEX_USE_PIPES | (report_times ? PEX_RECORD_TIMES : 0),
2964 programname, temp_filename);
2966 pfatal_with_name (_("pex_init failed"));
2968 for (i = 0; i < n_commands; i++)
2972 const char *string = commands[i].argv[0];
2974 errmsg = pex_run (pex,
2975 ((i + 1 == n_commands ? PEX_LAST : 0)
2976 | (string == commands[i].prog ? PEX_SEARCH : 0)),
2977 string, (char * const *) CONST_CAST (commands[i].argv),
2986 pfatal_with_name (errmsg);
2990 if (string != commands[i].prog)
2991 free (CONST_CAST (string));
2996 /* Wait for all the subprocesses to finish. */
3000 struct pex_time *times = NULL;
3003 statuses = alloca (n_commands * sizeof (int));
3004 if (!pex_get_status (pex, n_commands, statuses))
3005 pfatal_with_name (_("failed to get exit status"));
3009 times = alloca (n_commands * sizeof (struct pex_time));
3010 if (!pex_get_times (pex, n_commands, times))
3011 pfatal_with_name (_("failed to get process times"));
3016 for (i = 0; i < n_commands; ++i)
3018 int status = statuses[i];
3020 if (WIFSIGNALED (status))
3023 /* SIGPIPE is a special case. It happens in -pipe mode
3024 when the compiler dies before the preprocessor is done,
3025 or the assembler dies before the compiler is done.
3026 There's generally been an error already, and this is
3027 just fallout. So don't generate another error unless
3028 we would otherwise have succeeded. */
3029 if (WTERMSIG (status) == SIGPIPE
3030 && (signal_count || greatest_status >= MIN_FATAL_STATUS))
3038 Internal error: %s (program %s)\n\
3039 Please submit a full bug report.\n\
3040 See %s for instructions.",
3041 strsignal (WTERMSIG (status)), commands[i].prog,
3044 else if (WIFEXITED (status)
3045 && WEXITSTATUS (status) >= MIN_FATAL_STATUS)
3047 if (WEXITSTATUS (status) > greatest_status)
3048 greatest_status = WEXITSTATUS (status);
3054 struct pex_time *pt = ×[i];
3057 ut = ((double) pt->user_seconds
3058 + (double) pt->user_microseconds / 1.0e6);
3059 st = ((double) pt->system_seconds
3060 + (double) pt->system_microseconds / 1.0e6);
3063 notice ("# %s %.2f %.2f\n", commands[i].prog, ut, st);
3071 /* Find all the switches given to us
3072 and make a vector describing them.
3073 The elements of the vector are strings, one per switch given.
3074 If a switch uses following arguments, then the `part1' field
3075 is the switch itself and the `args' field
3076 is a null-terminated vector containing the following arguments.
3077 The `live_cond' field is:
3079 1 if the switch is true in a conditional spec,
3080 -1 if false (overridden by a later switch)
3081 -2 if this switch should be ignored (used in %<S)
3082 The `validated' field is nonzero if any spec has looked at this switch;
3083 if it remains zero at the end of the run, it must be meaningless. */
3086 #define SWITCH_FALSE -1
3087 #define SWITCH_IGNORE -2
3088 #define SWITCH_LIVE 1
3095 unsigned char validated;
3096 unsigned char ordering;
3099 static struct switchstr *switches;
3101 static int n_switches;
3103 /* Language is one of three things:
3105 1) The name of a real programming language.
3106 2) NULL, indicating that no one has figured out
3108 3) '*', indicating that the file should be passed
3113 const char *language;
3114 struct compiler *incompiler;
3119 /* Also a vector of input files specified. */
3121 static struct infile *infiles;
3125 /* True if multiple input files are being compiled to a single
3128 static bool combine_inputs;
3130 /* This counts the number of libraries added by lang_specific_driver, so that
3131 we can tell if there were any user supplied any files or libraries. */
3133 static int added_libraries;
3135 /* And a vector of corresponding output files is made up later. */
3137 const char **outfiles;
3139 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3141 /* Convert NAME to a new name if it is the standard suffix. DO_EXE
3142 is true if we should look for an executable suffix. DO_OBJ
3143 is true if we should look for an object suffix. */
3146 convert_filename (const char *name, int do_exe ATTRIBUTE_UNUSED,
3147 int do_obj ATTRIBUTE_UNUSED)
3149 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3157 len = strlen (name);
3159 #ifdef HAVE_TARGET_OBJECT_SUFFIX
3160 /* Convert x.o to x.obj if TARGET_OBJECT_SUFFIX is ".obj". */
3161 if (do_obj && len > 2
3162 && name[len - 2] == '.'
3163 && name[len - 1] == 'o')
3165 obstack_grow (&obstack, name, len - 2);
3166 obstack_grow0 (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX));
3167 name = XOBFINISH (&obstack, const char *);
3171 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3172 /* If there is no filetype, make it the executable suffix (which includes
3173 the "."). But don't get confused if we have just "-o". */
3174 if (! do_exe || TARGET_EXECUTABLE_SUFFIX[0] == 0 || (len == 2 && name[0] == '-'))
3177 for (i = len - 1; i >= 0; i--)
3178 if (IS_DIR_SEPARATOR (name[i]))
3181 for (i++; i < len; i++)
3185 obstack_grow (&obstack, name, len);
3186 obstack_grow0 (&obstack, TARGET_EXECUTABLE_SUFFIX,
3187 strlen (TARGET_EXECUTABLE_SUFFIX));
3188 name = XOBFINISH (&obstack, const char *);
3195 /* Display the command line switches accepted by gcc. */
3199 printf (_("Usage: %s [options] file...\n"), programname);
3200 fputs (_("Options:\n"), stdout);
3202 fputs (_(" -pass-exit-codes Exit with highest error code from a phase\n"), stdout);
3203 fputs (_(" --help Display this information\n"), stdout);
3204 fputs (_(" --target-help Display target specific command line options\n"), stdout);
3205 fputs (_(" --help={target|optimizers|warnings|undocumented|params}[,{[^]joined|[^]separate}]\n"), stdout);
3206 fputs (_(" Display specific types of command line options\n"), stdout);
3208 fputs (_(" (Use '-v --help' to display command line options of sub-processes)\n"), stdout);
3209 fputs (_(" -dumpspecs Display all of the built in spec strings\n"), stdout);
3210 fputs (_(" -dumpversion Display the version of the compiler\n"), stdout);
3211 fputs (_(" -dumpmachine Display the compiler's target processor\n"), stdout);
3212 fputs (_(" -print-search-dirs Display the directories in the compiler's search path\n"), stdout);
3213 fputs (_(" -print-libgcc-file-name Display the name of the compiler's companion library\n"), stdout);
3214 fputs (_(" -print-file-name=<lib> Display the full path to library <lib>\n"), stdout);
3215 fputs (_(" -print-prog-name=<prog> Display the full path to compiler component <prog>\n"), stdout);
3216 fputs (_(" -print-multi-directory Display the root directory for versions of libgcc\n"), stdout);
3218 -print-multi-lib Display the mapping between command line options and\n\
3219 multiple library search directories\n"), stdout);
3220 fputs (_(" -print-multi-os-directory Display the relative path to OS libraries\n"), stdout);
3221 fputs (_(" -print-sysroot-headers-suffix Display the sysroot suffix used to find headers\n"), stdout);
3222 fputs (_(" -Wa,<options> Pass comma-separated <options> on to the assembler\n"), stdout);
3223 fputs (_(" -Wp,<options> Pass comma-separated <options> on to the preprocessor\n"), stdout);
3224 fputs (_(" -Wl,<options> Pass comma-separated <options> on to the linker\n"), stdout);
3225 fputs (_(" -Xassembler <arg> Pass <arg> on to the assembler\n"), stdout);
3226 fputs (_(" -Xpreprocessor <arg> Pass <arg> on to the preprocessor\n"), stdout);
3227 fputs (_(" -Xlinker <arg> Pass <arg> on to the linker\n"), stdout);
3228 fputs (_(" -combine Pass multiple source files to compiler at once\n"), stdout);
3229 fputs (_(" -save-temps Do not delete intermediate files\n"), stdout);
3230 fputs (_(" -pipe Use pipes rather than intermediate files\n"), stdout);
3231 fputs (_(" -time Time the execution of each subprocess\n"), stdout);
3232 fputs (_(" -specs=<file> Override built-in specs with the contents of <file>\n"), stdout);
3233 fputs (_(" -std=<standard> Assume that the input sources are for <standard>\n"), stdout);
3235 --sysroot=<directory> Use <directory> as the root directory for headers\n\
3236 and libraries\n"), stdout);
3237 fputs (_(" -B <directory> Add <directory> to the compiler's search paths\n"), stdout);
3238 fputs (_(" -b <machine> Run gcc for target <machine>, if installed\n"), stdout);
3239 fputs (_(" -V <version> Run gcc version number <version>, if installed\n"), stdout);
3240 fputs (_(" -v Display the programs invoked by the compiler\n"), stdout);
3241 fputs (_(" -### Like -v but options quoted and commands not executed\n"), stdout);
3242 fputs (_(" -E Preprocess only; do not compile, assemble or link\n"), stdout);
3243 fputs (_(" -S Compile only; do not assemble or link\n"), stdout);
3244 fputs (_(" -c Compile and assemble, but do not link\n"), stdout);
3245 fputs (_(" -o <file> Place the output into <file>\n"), stdout);
3247 -x <language> Specify the language of the following input files\n\
3248 Permissible languages include: c c++ assembler none\n\
3249 'none' means revert to the default behavior of\n\
3250 guessing the language based on the file's extension\n\
3254 \nOptions starting with -g, -f, -m, -O, -W, or --param are automatically\n\
3255 passed on to the various sub-processes invoked by %s. In order to pass\n\
3256 other options on to these processes the -W<letter> options must be used.\n\
3259 /* The rest of the options are displayed by invocations of the various
3264 add_preprocessor_option (const char *option, int len)
3266 n_preprocessor_options++;
3268 if (! preprocessor_options)
3269 preprocessor_options = XNEWVEC (char *, n_preprocessor_options);
3271 preprocessor_options = xrealloc (preprocessor_options,
3272 n_preprocessor_options * sizeof (char *));
3274 preprocessor_options [n_preprocessor_options - 1] =
3275 save_string (option, len);
3279 add_assembler_option (const char *option, int len)
3281 n_assembler_options++;
3283 if (! assembler_options)
3284 assembler_options = XNEWVEC (char *, n_assembler_options);
3286 assembler_options = xrealloc (assembler_options,
3287 n_assembler_options * sizeof (char *));
3289 assembler_options [n_assembler_options - 1] = save_string (option, len);
3293 add_linker_option (const char *option, int len)
3297 if (! linker_options)
3298 linker_options = XNEWVEC (char *, n_linker_options);
3300 linker_options = xrealloc (linker_options,
3301 n_linker_options * sizeof (char *));
3303 linker_options [n_linker_options - 1] = save_string (option, len);
3306 /* Create the vector `switches' and its contents.
3307 Store its length in `n_switches'. */
3310 process_command (int argc, const char **argv)
3315 const char *spec_lang = 0;
3316 int last_language_n_infiles;
3317 int lang_n_infiles = 0;
3318 #ifdef MODIFY_TARGET_NAME
3319 int is_modify_target_name;
3322 const char *tooldir_prefix;
3324 GET_ENVIRONMENT (gcc_exec_prefix, "GCC_EXEC_PREFIX");
3328 added_libraries = 0;
3330 /* Figure compiler version from version string. */
3332 compiler_version = temp1 = xstrdup (version_string);
3334 for (; *temp1; ++temp1)
3343 /* If there is a -V or -b option (or both), process it now, before
3344 trying to interpret the rest of the command line.
3345 Use heuristic that all configuration names must have at least
3346 one dash '-'. This allows us to pass options starting with -b. */
3347 if (argc > 1 && argv[1][0] == '-'
3348 && (argv[1][1] == 'V' ||
3349 ((argv[1][1] == 'b') && (NULL != strchr(argv[1] + 2,'-')))))
3351 const char *new_version = DEFAULT_TARGET_VERSION;
3352 const char *new_machine = DEFAULT_TARGET_MACHINE;
3353 const char *progname = argv[0];
3358 while (argc > 1 && argv[1][0] == '-'
3359 && (argv[1][1] == 'V' ||
3360 ((argv[1][1] == 'b') && ( NULL != strchr(argv[1] + 2,'-')))))
3362 char opt = argv[1][1];
3364 if (argv[1][2] != '\0')
3377 fatal ("'-%c' option must have argument", opt);
3384 for (baselen = strlen (progname); baselen > 0; baselen--)
3385 if (IS_DIR_SEPARATOR (progname[baselen-1]))
3387 new_argv0 = xmemdup (progname, baselen,
3388 baselen + concat_length (new_version, new_machine,
3389 "-gcc-", NULL) + 1);
3390 strcpy (new_argv0 + baselen, new_machine);
3391 strcat (new_argv0, "-gcc-");
3392 strcat (new_argv0, new_version);
3394 new_argv = xmemdup (argv, (argc + 1) * sizeof (argv[0]),
3395 (argc + 1) * sizeof (argv[0]));
3396 new_argv[0] = new_argv0;
3398 execvp (new_argv0, new_argv);
3399 fatal ("couldn't run '%s': %s", new_argv0, xstrerror (errno));
3402 /* Set up the default search paths. If there is no GCC_EXEC_PREFIX,
3403 see if we can create it from the pathname specified in argv[0]. */
3405 gcc_libexec_prefix = standard_libexec_prefix;
3407 /* FIXME: make_relative_prefix doesn't yet work for VMS. */
3408 if (!gcc_exec_prefix)
3410 gcc_exec_prefix = make_relative_prefix (argv[0], standard_bindir_prefix,
3411 standard_exec_prefix);
3412 gcc_libexec_prefix = make_relative_prefix (argv[0],
3413 standard_bindir_prefix,
3414 standard_libexec_prefix);
3415 if (gcc_exec_prefix)
3416 putenv (concat ("GCC_EXEC_PREFIX=", gcc_exec_prefix, NULL));
3420 /* make_relative_prefix requires a program name, but
3421 GCC_EXEC_PREFIX is typically a directory name with a trailing
3422 / (which is ignored by make_relative_prefix), so append a
3424 char *tmp_prefix = concat (gcc_exec_prefix, "gcc", NULL);
3425 gcc_libexec_prefix = make_relative_prefix (tmp_prefix,
3426 standard_exec_prefix,
3427 standard_libexec_prefix);
3429 /* The path is unrelocated, so fallback to the original setting. */
3430 if (!gcc_libexec_prefix)
3431 gcc_libexec_prefix = standard_libexec_prefix;
3437 /* From this point onward, gcc_exec_prefix is non-null if the toolchain
3438 is relocated. The toolchain was either relocated using GCC_EXEC_PREFIX
3439 or an automatically created GCC_EXEC_PREFIX from argv[0]. */
3441 if (gcc_exec_prefix)
3443 int len = strlen (gcc_exec_prefix);
3445 if (len > (int) sizeof ("/lib/gcc/") - 1
3446 && (IS_DIR_SEPARATOR (gcc_exec_prefix[len-1])))
3448 temp = gcc_exec_prefix + len - sizeof ("/lib/gcc/") + 1;
3449 if (IS_DIR_SEPARATOR (*temp)
3450 && strncmp (temp + 1, "lib", 3) == 0
3451 && IS_DIR_SEPARATOR (temp[4])
3452 && strncmp (temp + 5, "gcc", 3) == 0)
3453 len -= sizeof ("/lib/gcc/") - 1;
3456 set_std_prefix (gcc_exec_prefix, len);
3457 add_prefix (&exec_prefixes, gcc_libexec_prefix, "GCC",
3458 PREFIX_PRIORITY_LAST, 0, 0);
3459 add_prefix (&startfile_prefixes, gcc_exec_prefix, "GCC",
3460 PREFIX_PRIORITY_LAST, 0, 0);
3463 /* COMPILER_PATH and LIBRARY_PATH have values
3464 that are lists of directory names with colons. */
3466 GET_ENVIRONMENT (temp, "COMPILER_PATH");
3469 const char *startp, *endp;
3470 char *nstore = alloca (strlen (temp) + 3);
3472 startp = endp = temp;
3475 if (*endp == PATH_SEPARATOR || *endp == 0)
3477 strncpy (nstore, startp, endp - startp);
3479 strcpy (nstore, concat (".", dir_separator_str, NULL));
3480 else if (!IS_DIR_SEPARATOR (endp[-1]))
3482 nstore[endp - startp] = DIR_SEPARATOR;
3483 nstore[endp - startp + 1] = 0;
3486 nstore[endp - startp] = 0;
3487 add_prefix (&exec_prefixes, nstore, 0,
3488 PREFIX_PRIORITY_LAST, 0, 0);
3489 add_prefix (&include_prefixes, nstore, 0,
3490 PREFIX_PRIORITY_LAST, 0, 0);
3493 endp = startp = endp + 1;
3500 GET_ENVIRONMENT (temp, LIBRARY_PATH_ENV);
3501 if (temp && *cross_compile == '0')
3503 const char *startp, *endp;
3504 char *nstore = alloca (strlen (temp) + 3);
3506 startp = endp = temp;
3509 if (*endp == PATH_SEPARATOR || *endp == 0)
3511 strncpy (nstore, startp, endp - startp);
3513 strcpy (nstore, concat (".", dir_separator_str, NULL));
3514 else if (!IS_DIR_SEPARATOR (endp[-1]))
3516 nstore[endp - startp] = DIR_SEPARATOR;
3517 nstore[endp - startp + 1] = 0;
3520 nstore[endp - startp] = 0;
3521 add_prefix (&startfile_prefixes, nstore, NULL,
3522 PREFIX_PRIORITY_LAST, 0, 1);
3525 endp = startp = endp + 1;
3532 /* Use LPATH like LIBRARY_PATH (for the CMU build program). */
3533 GET_ENVIRONMENT (temp, "LPATH");
3534 if (temp && *cross_compile == '0')
3536 const char *startp, *endp;
3537 char *nstore = alloca (strlen (temp) + 3);
3539 startp = endp = temp;
3542 if (*endp == PATH_SEPARATOR || *endp == 0)
3544 strncpy (nstore, startp, endp - startp);
3546 strcpy (nstore, concat (".", dir_separator_str, NULL));
3547 else if (!IS_DIR_SEPARATOR (endp[-1]))
3549 nstore[endp - startp] = DIR_SEPARATOR;
3550 nstore[endp - startp + 1] = 0;
3553 nstore[endp - startp] = 0;
3554 add_prefix (&startfile_prefixes, nstore, NULL,
3555 PREFIX_PRIORITY_LAST, 0, 1);
3558 endp = startp = endp + 1;
3565 /* Convert new-style -- options to old-style. */
3566 translate_options (&argc, (const char *const **) &argv);
3568 /* Do language-specific adjustment/addition of flags. */
3569 lang_specific_driver (&argc, (const char *const **) &argv, &added_libraries);
3571 /* Scan argv twice. Here, the first time, just count how many switches
3572 there will be in their vector, and how many input files in theirs.
3573 Here we also parse the switches that cc itself uses (e.g. -v). */
3575 for (i = 1; i < argc; i++)
3577 if (! strcmp (argv[i], "-dumpspecs"))
3579 struct spec_list *sl;
3581 for (sl = specs; sl; sl = sl->next)
3582 printf ("*%s:\n%s\n\n", sl->name, *(sl->ptr_spec));
3583 if (link_command_spec)
3584 printf ("*link_command:\n%s\n\n", link_command_spec);
3587 else if (! strcmp (argv[i], "-dumpversion"))
3589 printf ("%s\n", spec_version);
3592 else if (! strcmp (argv[i], "-dumpmachine"))
3594 printf ("%s\n", spec_machine);
3597 else if (strcmp (argv[i], "-fversion") == 0)
3599 /* translate_options () has turned --version into -fversion. */
3600 printf (_("%s (GCC) %s\n"), programname, version_string);
3601 printf ("Copyright %s 2007 Free Software Foundation, Inc.\n",
3603 fputs (_("This is free software; see the source for copying conditions. There is NO\n\
3604 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\n"),
3608 else if (strcmp (argv[i], "-fhelp") == 0)
3610 /* translate_options () has turned --help into -fhelp. */
3611 print_help_list = 1;
3613 /* We will be passing a dummy file on to the sub-processes. */
3617 /* CPP driver cannot obtain switch from cc1_options. */
3619 add_preprocessor_option ("--help", 6);
3620 add_assembler_option ("--help", 6);
3621 add_linker_option ("--help", 6);
3623 else if (strncmp (argv[i], "-fhelp=", 7) == 0)
3625 /* translate_options () has turned --help into -fhelp. */
3626 print_subprocess_help = 2;
3628 /* We will be passing a dummy file on to the sub-processes. */
3632 else if (strcmp (argv[i], "-ftarget-help") == 0)
3634 /* translate_options() has turned --target-help into -ftarget-help. */
3635 print_subprocess_help = 1;
3637 /* We will be passing a dummy file on to the sub-processes. */
3641 /* CPP driver cannot obtain switch from cc1_options. */
3643 add_preprocessor_option ("--target-help", 13);
3644 add_assembler_option ("--target-help", 13);
3645 add_linker_option ("--target-help", 13);
3647 else if (! strcmp (argv[i], "-pass-exit-codes"))
3649 pass_exit_codes = 1;
3652 else if (! strcmp (argv[i], "-print-search-dirs"))
3653 print_search_dirs = 1;
3654 else if (! strcmp (argv[i], "-print-libgcc-file-name"))
3655 print_file_name = "libgcc.a";
3656 else if (! strncmp (argv[i], "-print-file-name=", 17))
3657 print_file_name = argv[i] + 17;
3658 else if (! strncmp (argv[i], "-print-prog-name=", 17))
3659 print_prog_name = argv[i] + 17;
3660 else if (! strcmp (argv[i], "-print-multi-lib"))
3661 print_multi_lib = 1;
3662 else if (! strcmp (argv[i], "-print-multi-directory"))
3663 print_multi_directory = 1;
3664 else if (! strcmp (argv[i], "-print-multi-os-directory"))
3665 print_multi_os_directory = 1;
3666 else if (! strcmp (argv[i], "-print-sysroot-headers-suffix"))
3667 print_sysroot_headers_suffix = 1;
3668 else if (! strncmp (argv[i], "-Wa,", 4))
3671 /* Pass the rest of this option to the assembler. */
3673 /* Split the argument at commas. */
3675 for (j = 4; argv[i][j]; j++)
3676 if (argv[i][j] == ',')
3678 add_assembler_option (argv[i] + prev, j - prev);
3682 /* Record the part after the last comma. */
3683 add_assembler_option (argv[i] + prev, j - prev);
3685 else if (! strncmp (argv[i], "-Wp,", 4))
3688 /* Pass the rest of this option to the preprocessor. */
3690 /* Split the argument at commas. */
3692 for (j = 4; argv[i][j]; j++)
3693 if (argv[i][j] == ',')
3695 add_preprocessor_option (argv[i] + prev, j - prev);
3699 /* Record the part after the last comma. */
3700 add_preprocessor_option (argv[i] + prev, j - prev);
3702 else if (argv[i][0] == '+' && argv[i][1] == 'e')
3703 /* The +e options to the C++ front-end. */
3705 else if (strncmp (argv[i], "-Wl,", 4) == 0)
3708 /* Split the argument at commas. */
3709 for (j = 3; argv[i][j]; j++)
3710 n_infiles += (argv[i][j] == ',');
3712 else if (strcmp (argv[i], "-Xlinker") == 0)
3715 fatal ("argument to '-Xlinker' is missing");
3720 else if (strcmp (argv[i], "-Xpreprocessor") == 0)
3723 fatal ("argument to '-Xpreprocessor' is missing");
3725 add_preprocessor_option (argv[i+1], strlen (argv[i+1]));
3727 else if (strcmp (argv[i], "-Xassembler") == 0)
3730 fatal ("argument to '-Xassembler' is missing");
3732 add_assembler_option (argv[i+1], strlen (argv[i+1]));
3734 else if (strcmp (argv[i], "-l") == 0)
3737 fatal ("argument to '-l' is missing");
3742 else if (strncmp (argv[i], "-l", 2) == 0)
3744 else if (strcmp (argv[i], "-save-temps") == 0)
3746 save_temps_flag = 1;
3749 else if (strcmp (argv[i], "-combine") == 0)
3754 else if (strcmp (argv[i], "-specs") == 0)
3756 struct user_specs *user = XNEW (struct user_specs);
3758 fatal ("argument to '-specs' is missing");
3760 user->next = (struct user_specs *) 0;
3761 user->filename = argv[i];
3762 if (user_specs_tail)
3763 user_specs_tail->next = user;
3765 user_specs_head = user;
3766 user_specs_tail = user;
3768 else if (strncmp (argv[i], "-specs=", 7) == 0)
3770 struct user_specs *user = XNEW (struct user_specs);
3771 if (strlen (argv[i]) == 7)
3772 fatal ("argument to '-specs=' is missing");
3774 user->next = (struct user_specs *) 0;
3775 user->filename = argv[i] + 7;
3776 if (user_specs_tail)
3777 user_specs_tail->next = user;
3779 user_specs_head = user;
3780 user_specs_tail = user;
3782 else if (strcmp (argv[i], "-time") == 0)
3784 else if (strcmp (argv[i], "-pipe") == 0)
3786 /* -pipe has to go into the switches array as well as
3791 else if (strcmp (argv[i], "-###") == 0)
3793 /* This is similar to -v except that there is no execution
3794 of the commands and the echoed arguments are quoted. It
3795 is intended for use in shell scripts to capture the
3796 driver-generated command line. */
3797 verbose_only_flag++;
3800 else if (argv[i][0] == '-' && argv[i][1] != 0)
3802 const char *p = &argv[i][1];
3808 if (NULL == strchr(argv[i] + 2, '-'))
3813 fatal ("'-%c' must come at the start of the command line", c);
3821 if (p[1] == 0 && i + 1 == argc)
3822 fatal ("argument to '-B' is missing");
3828 len = strlen (value);
3830 /* Catch the case where the user has forgotten to append a
3831 directory separator to the path. Note, they may be using
3832 -B to add an executable name prefix, eg "i386-elf-", in
3833 order to distinguish between multiple installations of
3834 GCC in the same directory. Hence we must check to see
3835 if appending a directory separator actually makes a
3836 valid directory name. */
3837 if (! IS_DIR_SEPARATOR (value [len - 1])
3838 && is_directory (value, false))
3840 char *tmp = XNEWVEC (char, len + 2);
3841 strcpy (tmp, value);
3842 tmp[len] = DIR_SEPARATOR;
3847 add_prefix (&exec_prefixes, value, NULL,
3848 PREFIX_PRIORITY_B_OPT, 0, 0);
3849 add_prefix (&startfile_prefixes, value, NULL,
3850 PREFIX_PRIORITY_B_OPT, 0, 0);
3851 add_prefix (&include_prefixes, value, NULL,
3852 PREFIX_PRIORITY_B_OPT, 0, 0);
3857 case 'v': /* Print our subcommands and print versions. */
3859 /* If they do anything other than exactly `-v', don't set
3860 verbose_flag; rather, continue on to give the error. */
3878 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3883 /* Forward scan, just in case -S or -c is specified
3890 if (argv[j][0] == '-')
3892 if (SWITCH_CURTAILS_COMPILATION (argv[j][1])
3898 else if ((skip = SWITCH_TAKES_ARG (argv[j][1])))
3899 j += skip - (argv[j][2] != 0);
3900 else if ((skip = WORD_SWITCH_TAKES_ARG (argv[j] + 1)))
3907 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX) || defined(HAVE_TARGET_OBJECT_SUFFIX)
3909 argv[i + 1] = convert_filename (argv[i + 1], ! have_c, 0);
3911 argv[i] = convert_filename (argv[i], ! have_c, 0);
3918 #ifdef MODIFY_TARGET_NAME
3919 is_modify_target_name = 0;
3921 for (j = 0; j < ARRAY_SIZE (modify_target); j++)
3922 if (! strcmp (argv[i], modify_target[j].sw))
3924 char *new_name = xmalloc (strlen (modify_target[j].str)
3925 + strlen (spec_machine));
3928 int made_addition = 0;
3930 is_modify_target_name = 1;
3931 for (p = spec_machine, q = new_name; *p != 0; )
3933 if (modify_target[j].add_del == DELETE
3934 && (! strncmp (q, modify_target[j].str,
3935 strlen (modify_target[j].str))))
3936 p += strlen (modify_target[j].str);
3937 else if (modify_target[j].add_del == ADD
3938 && ! made_addition && *p == '-')
3940 for (r = modify_target[j].str; *r != 0; )
3948 spec_machine = new_name;
3951 if (is_modify_target_name)
3957 if (SWITCH_TAKES_ARG (c) > (p[1] != 0))
3958 i += SWITCH_TAKES_ARG (c) - (p[1] != 0);
3959 else if (WORD_SWITCH_TAKES_ARG (p))
3960 i += WORD_SWITCH_TAKES_ARG (p);
3970 if (save_temps_flag && use_pipes)
3972 /* -save-temps overrides -pipe, so that temp files are produced */
3973 if (save_temps_flag)
3974 error ("warning: -pipe ignored because -save-temps specified");
3978 /* Set up the search paths. We add directories that we expect to
3979 contain GNU Toolchain components before directories specified by
3980 the machine description so that we will find GNU components (like
3981 the GNU assembler) before those of the host system. */
3983 /* If we don't know where the toolchain has been installed, use the
3984 configured-in locations. */
3985 if (!gcc_exec_prefix)
3988 add_prefix (&exec_prefixes, standard_libexec_prefix, "GCC",
3989 PREFIX_PRIORITY_LAST, 1, 0);
3990 add_prefix (&exec_prefixes, standard_libexec_prefix, "BINUTILS",
3991 PREFIX_PRIORITY_LAST, 2, 0);
3992 add_prefix (&exec_prefixes, standard_exec_prefix, "BINUTILS",
3993 PREFIX_PRIORITY_LAST, 2, 0);
3995 add_prefix (&startfile_prefixes, standard_exec_prefix, "BINUTILS",
3996 PREFIX_PRIORITY_LAST, 1, 0);
3999 /* If not cross-compiling, search well-known system locations. */
4000 if (*cross_compile == '0')
4003 add_prefix (&exec_prefixes, standard_exec_prefix_1, "BINUTILS",
4004 PREFIX_PRIORITY_LAST, 2, 0);
4005 add_prefix (&exec_prefixes, standard_exec_prefix_2, "BINUTILS",
4006 PREFIX_PRIORITY_LAST, 2, 0);
4008 add_prefix (&startfile_prefixes, standard_exec_prefix_2, "BINUTILS",
4009 PREFIX_PRIORITY_LAST, 1, 0);
4012 gcc_assert (!IS_ABSOLUTE_PATH (tooldir_base_prefix));
4013 tooldir_prefix = concat (tooldir_base_prefix, spec_machine,
4014 dir_separator_str, NULL);
4016 /* Look for tools relative to the location from which the driver is
4017 running, or, if that is not available, the configured prefix. */
4019 = concat (gcc_exec_prefix ? gcc_exec_prefix : standard_exec_prefix,
4020 spec_machine, dir_separator_str,
4021 spec_version, dir_separator_str, tooldir_prefix, NULL);
4023 add_prefix (&exec_prefixes,
4024 concat (tooldir_prefix, "bin", dir_separator_str, NULL),
4025 "BINUTILS", PREFIX_PRIORITY_LAST, 0, 0);
4026 add_prefix (&startfile_prefixes,
4027 concat (tooldir_prefix, "lib", dir_separator_str, NULL),
4028 "BINUTILS", PREFIX_PRIORITY_LAST, 0, 1);
4030 #if defined(TARGET_SYSTEM_ROOT_RELOCATABLE) && !defined(VMS)
4031 /* If the normal TARGET_SYSTEM_ROOT is inside of $exec_prefix,
4032 then consider it to relocate with the rest of the GCC installation
4033 if GCC_EXEC_PREFIX is set.
4034 ``make_relative_prefix'' is not compiled for VMS, so don't call it. */
4035 if (target_system_root && gcc_exec_prefix)
4037 char *tmp_prefix = make_relative_prefix (argv[0],
4038 standard_bindir_prefix,
4039 target_system_root);
4040 if (tmp_prefix && access_check (tmp_prefix, F_OK) == 0)
4042 target_system_root = tmp_prefix;
4043 target_system_root_changed = 1;
4048 /* More prefixes are enabled in main, after we read the specs file
4049 and determine whether this is cross-compilation or not. */
4051 /* Then create the space for the vectors and scan again. */
4053 switches = XNEWVEC (struct switchstr, n_switches + 1);
4054 infiles = XNEWVEC (struct infile, n_infiles + 1);
4057 last_language_n_infiles = -1;
4059 /* This, time, copy the text of each switch and store a pointer
4060 to the copy in the vector of switches.
4061 Store all the infiles in their vector. */
4063 for (i = 1; i < argc; i++)
4065 /* Just skip the switches that were handled by the preceding loop. */
4066 #ifdef MODIFY_TARGET_NAME
4067 is_modify_target_name = 0;
4069 for (j = 0; j < ARRAY_SIZE (modify_target); j++)
4070 if (! strcmp (argv[i], modify_target[j].sw))
4071 is_modify_target_name = 1;
4073 if (is_modify_target_name)
4077 if (! strncmp (argv[i], "-Wa,", 4))
4079 else if (! strncmp (argv[i], "-Wp,", 4))
4081 else if (! strcmp (argv[i], "-pass-exit-codes"))
4083 else if (! strcmp (argv[i], "-print-search-dirs"))
4085 else if (! strcmp (argv[i], "-print-libgcc-file-name"))
4087 else if (! strncmp (argv[i], "-print-file-name=", 17))
4089 else if (! strncmp (argv[i], "-print-prog-name=", 17))
4091 else if (! strcmp (argv[i], "-print-multi-lib"))
4093 else if (! strcmp (argv[i], "-print-multi-directory"))
4095 else if (! strcmp (argv[i], "-print-multi-os-directory"))
4097 else if (! strcmp (argv[i], "-print-sysroot-headers-suffix"))
4099 else if (! strncmp (argv[i], "--sysroot=", strlen ("--sysroot=")))
4101 target_system_root = argv[i] + strlen ("--sysroot=");
4102 target_system_root_changed = 1;
4104 else if (argv[i][0] == '+' && argv[i][1] == 'e')
4106 /* Compensate for the +e options to the C++ front-end;
4107 they're there simply for cfront call-compatibility. We do
4108 some magic in default_compilers to pass them down properly.
4109 Note we deliberately start at the `+' here, to avoid passing
4110 -e0 or -e1 down into the linker. */
4111 switches[n_switches].part1 = &argv[i][0];
4112 switches[n_switches].args = 0;
4113 switches[n_switches].live_cond = SWITCH_OK;
4114 switches[n_switches].validated = 0;
4117 else if (strncmp (argv[i], "-Wl,", 4) == 0)
4120 /* Split the argument at commas. */
4122 for (j = 4; argv[i][j]; j++)
4123 if (argv[i][j] == ',')
4125 infiles[n_infiles].language = "*";
4126 infiles[n_infiles++].name
4127 = save_string (argv[i] + prev, j - prev);
4130 /* Record the part after the last comma. */
4131 infiles[n_infiles].language = "*";
4132 infiles[n_infiles++].name = argv[i] + prev;
4134 else if (strcmp (argv[i], "-Xlinker") == 0)
4136 infiles[n_infiles].language = "*";
4137 infiles[n_infiles++].name = argv[++i];
4139 /* Xassembler and Xpreprocessor were already handled in the first argv
4140 scan, so all we need to do here is ignore them and their argument. */
4141 else if (strcmp (argv[i], "-Xassembler") == 0)
4143 else if (strcmp (argv[i], "-Xpreprocessor") == 0)
4145 else if (strcmp (argv[i], "-l") == 0)
4146 { /* POSIX allows separation of -l and the lib arg;
4147 canonicalize by concatenating -l with its arg */
4148 infiles[n_infiles].language = "*";
4149 infiles[n_infiles++].name = concat ("-l", argv[++i], NULL);
4151 else if (strncmp (argv[i], "-l", 2) == 0)
4153 infiles[n_infiles].language = "*";
4154 infiles[n_infiles++].name = argv[i];
4156 else if (strcmp (argv[i], "-specs") == 0)
4158 else if (strncmp (argv[i], "-specs=", 7) == 0)
4160 else if (strcmp (argv[i], "-time") == 0)
4162 else if (strcmp (argv[i], "-###") == 0)
4164 else if (argv[i][0] == '-' && argv[i][1] != 0)
4166 const char *p = &argv[i][1];
4171 if (p[1] == 0 && i + 1 == argc)
4172 fatal ("argument to '-x' is missing");
4174 spec_lang = argv[++i];
4177 if (! strcmp (spec_lang, "none"))
4178 /* Suppress the warning if -xnone comes after the last input
4179 file, because alternate command interfaces like g++ might
4180 find it useful to place -xnone after each input file. */
4183 last_language_n_infiles = n_infiles;
4186 switches[n_switches].part1 = p;
4187 /* Deal with option arguments in separate argv elements. */
4188 if ((SWITCH_TAKES_ARG (c) > (p[1] != 0))
4189 || WORD_SWITCH_TAKES_ARG (p))
4192 int n_args = WORD_SWITCH_TAKES_ARG (p);
4196 /* Count only the option arguments in separate argv elements. */
4197 n_args = SWITCH_TAKES_ARG (c) - (p[1] != 0);
4199 if (i + n_args >= argc)
4200 fatal ("argument to '-%s' is missing", p);
4201 switches[n_switches].args
4202 = XNEWVEC (const char *, n_args + 1);
4204 switches[n_switches].args[j++] = argv[++i];
4205 /* Null-terminate the vector. */
4206 switches[n_switches].args[j] = 0;
4208 else if (strchr (switches_need_spaces, c))
4210 /* On some systems, ld cannot handle some options without
4211 a space. So split the option from its argument. */
4212 char *part1 = XNEWVEC (char, 2);
4216 switches[n_switches].part1 = part1;
4217 switches[n_switches].args = XNEWVEC (const char *, 2);
4218 switches[n_switches].args[0] = xstrdup (p+1);
4219 switches[n_switches].args[1] = 0;
4222 switches[n_switches].args = 0;
4224 switches[n_switches].live_cond = SWITCH_OK;
4225 switches[n_switches].validated = 0;
4226 switches[n_switches].ordering = 0;
4227 /* These are always valid, since gcc.c itself understands the
4228 first four and gfortranspec.c understands -static-libgfortran. */
4229 if (!strcmp (p, "save-temps")
4230 || !strcmp (p, "static-libgcc")
4231 || !strcmp (p, "shared-libgcc")
4232 || !strcmp (p, "pipe")
4233 || !strcmp (p, "static-libgfortran"))
4234 switches[n_switches].validated = 1;
4237 char ch = switches[n_switches].part1[0];
4239 switches[n_switches].validated = 1;
4245 #ifdef HAVE_TARGET_OBJECT_SUFFIX
4246 argv[i] = convert_filename (argv[i], 0, access (argv[i], F_OK));
4249 if (strcmp (argv[i], "-") != 0 && access (argv[i], F_OK) < 0)
4251 perror_with_name (argv[i]);
4256 infiles[n_infiles].language = spec_lang;
4257 infiles[n_infiles++].name = argv[i];
4262 if (n_infiles == last_language_n_infiles && spec_lang != 0)
4263 error ("warning: '-x %s' after last input file has no effect", spec_lang);
4265 /* Ensure we only invoke each subprocess once. */
4266 if (print_subprocess_help || print_help_list)
4270 /* Create a dummy input file, so that we can pass
4271 the help option on to the various sub-processes. */
4272 infiles[0].language = "c";
4273 infiles[0].name = "help-dummy";
4276 switches[n_switches].part1 = 0;
4277 infiles[n_infiles].name = 0;
4280 /* Store switches not filtered out by %<S in spec in COLLECT_GCC_OPTIONS
4281 and place that in the environment. */
4284 set_collect_gcc_options (void)
4289 /* Build COLLECT_GCC_OPTIONS to have all of the options specified to
4291 obstack_grow (&collect_obstack, "COLLECT_GCC_OPTIONS=",
4292 sizeof ("COLLECT_GCC_OPTIONS=") - 1);
4295 for (i = 0; (int) i < n_switches; i++)
4297 const char *const *args;
4300 obstack_grow (&collect_obstack, " ", 1);
4304 /* Ignore elided switches. */
4305 if (switches[i].live_cond == SWITCH_IGNORE)
4308 obstack_grow (&collect_obstack, "'-", 2);
4309 q = switches[i].part1;
4310 while ((p = strchr (q, '\'')))
4312 obstack_grow (&collect_obstack, q, p - q);
4313 obstack_grow (&collect_obstack, "'\\''", 4);
4316 obstack_grow (&collect_obstack, q, strlen (q));
4317 obstack_grow (&collect_obstack, "'", 1);
4319 for (args = switches[i].args; args && *args; args++)
4321 obstack_grow (&collect_obstack, " '", 2);
4323 while ((p = strchr (q, '\'')))
4325 obstack_grow (&collect_obstack, q, p - q);
4326 obstack_grow (&collect_obstack, "'\\''", 4);
4329 obstack_grow (&collect_obstack, q, strlen (q));
4330 obstack_grow (&collect_obstack, "'", 1);
4333 obstack_grow (&collect_obstack, "\0", 1);
4334 putenv (XOBFINISH (&collect_obstack, char *));
4337 /* Process a spec string, accumulating and running commands. */
4339 /* These variables describe the input file name.
4340 input_file_number is the index on outfiles of this file,
4341 so that the output file name can be stored for later use by %o.
4342 input_basename is the start of the part of the input file
4343 sans all directory names, and basename_length is the number
4344 of characters starting there excluding the suffix .c or whatever. */
4346 static const char *input_filename;
4347 static int input_file_number;
4348 size_t input_filename_length;
4349 static int basename_length;
4350 static int suffixed_basename_length;
4351 static const char *input_basename;
4352 static const char *input_suffix;
4353 #ifndef HOST_LACKS_INODE_NUMBERS
4354 static struct stat input_stat;
4356 static int input_stat_set;
4358 /* The compiler used to process the current input file. */
4359 static struct compiler *input_file_compiler;
4361 /* These are variables used within do_spec and do_spec_1. */
4363 /* Nonzero if an arg has been started and not yet terminated
4364 (with space, tab or newline). */
4365 static int arg_going;
4367 /* Nonzero means %d or %g has been seen; the next arg to be terminated
4368 is a temporary file name. */
4369 static int delete_this_arg;
4371 /* Nonzero means %w has been seen; the next arg to be terminated
4372 is the output file name of this compilation. */
4373 static int this_is_output_file;
4375 /* Nonzero means %s has been seen; the next arg to be terminated
4376 is the name of a library file and we should try the standard
4377 search dirs for it. */
4378 static int this_is_library_file;
4380 /* Nonzero means that the input of this command is coming from a pipe. */
4381 static int input_from_pipe;
4383 /* Nonnull means substitute this for any suffix when outputting a switches
4385 static const char *suffix_subst;
4387 /* If there is an argument being accumulated, terminate it and store it. */
4390 end_going_arg (void)
4396 obstack_1grow (&obstack, 0);
4397 string = XOBFINISH (&obstack, const char *);
4398 if (this_is_library_file)
4399 string = find_file (string);
4400 store_arg (string, delete_this_arg, this_is_output_file);
4401 if (this_is_output_file)
4402 outfiles[input_file_number] = string;
4407 /* Process the spec SPEC and run the commands specified therein.
4408 Returns 0 if the spec is successfully processed; -1 if failed. */
4411 do_spec (const char *spec)
4415 value = do_spec_2 (spec);
4417 /* Force out any unfinished command.
4418 If -pipe, this forces out the last command if it ended in `|'. */
4421 if (argbuf_index > 0 && !strcmp (argbuf[argbuf_index - 1], "|"))
4424 set_collect_gcc_options ();
4426 if (argbuf_index > 0)
4434 do_spec_2 (const char *spec)
4440 delete_this_arg = 0;
4441 this_is_output_file = 0;
4442 this_is_library_file = 0;
4443 input_from_pipe = 0;
4444 suffix_subst = NULL;
4446 result = do_spec_1 (spec, 0, NULL);
4454 /* Process the given spec string and add any new options to the end
4455 of the switches/n_switches array. */
4458 do_option_spec (const char *name, const char *spec)
4460 unsigned int i, value_count, value_len;
4461 const char *p, *q, *value;
4462 char *tmp_spec, *tmp_spec_p;
4464 if (configure_default_options[0].name == NULL)
4467 for (i = 0; i < ARRAY_SIZE (configure_default_options); i++)
4468 if (strcmp (configure_default_options[i].name, name) == 0)
4470 if (i == ARRAY_SIZE (configure_default_options))
4473 value = configure_default_options[i].value;
4474 value_len = strlen (value);
4476 /* Compute the size of the final spec. */
4479 while ((p = strstr (p, "%(VALUE)")) != NULL)
4485 /* Replace each %(VALUE) by the specified value. */
4486 tmp_spec = alloca (strlen (spec) + 1
4487 + value_count * (value_len - strlen ("%(VALUE)")));
4488 tmp_spec_p = tmp_spec;
4490 while ((p = strstr (q, "%(VALUE)")) != NULL)
4492 memcpy (tmp_spec_p, q, p - q);
4493 tmp_spec_p = tmp_spec_p + (p - q);
4494 memcpy (tmp_spec_p, value, value_len);
4495 tmp_spec_p += value_len;
4496 q = p + strlen ("%(VALUE)");
4498 strcpy (tmp_spec_p, q);
4500 do_self_spec (tmp_spec);
4503 /* Process the given spec string and add any new options to the end
4504 of the switches/n_switches array. */
4507 do_self_spec (const char *spec)
4510 do_spec_1 (" ", 0, NULL);
4512 if (argbuf_index > 0)
4517 n_switches += argbuf_index;
4518 switches = xrealloc (switches,
4519 sizeof (struct switchstr) * (n_switches + 1));
4521 switches[n_switches] = switches[first];
4522 for (i = 0; i < argbuf_index; i++)
4524 struct switchstr *sw;
4526 /* Each switch should start with '-'. */
4527 if (argbuf[i][0] != '-')
4528 fatal ("switch '%s' does not start with '-'", argbuf[i]);
4530 sw = &switches[i + first];
4531 sw->part1 = &argbuf[i][1];
4533 sw->live_cond = SWITCH_OK;
4540 /* Callback for processing %D and %I specs. */
4542 struct spec_path_info {
4547 bool separate_options;
4551 spec_path (char *path, void *data)
4553 struct spec_path_info *info = data;
4557 if (info->omit_relative && !IS_ABSOLUTE_PATH (path))
4560 if (info->append_len != 0)
4562 len = strlen (path);
4563 memcpy (path + len, info->append, info->append_len + 1);
4566 if (!is_directory (path, true))
4569 do_spec_1 (info->option, 1, NULL);
4570 if (info->separate_options)
4571 do_spec_1 (" ", 0, NULL);
4573 if (info->append_len == 0)
4575 len = strlen (path);
4576 save = path[len - 1];
4577 if (IS_DIR_SEPARATOR (path[len - 1]))
4578 path[len - 1] = '\0';
4581 do_spec_1 (path, 1, NULL);
4582 do_spec_1 (" ", 0, NULL);
4584 /* Must not damage the original path. */
4585 if (info->append_len == 0)
4586 path[len - 1] = save;
4591 /* Process the sub-spec SPEC as a portion of a larger spec.
4592 This is like processing a whole spec except that we do
4593 not initialize at the beginning and we do not supply a
4594 newline by default at the end.
4595 INSWITCH nonzero means don't process %-sequences in SPEC;
4596 in this case, % is treated as an ordinary character.
4597 This is used while substituting switches.
4598 INSWITCH nonzero also causes SPC not to terminate an argument.
4600 Value is zero unless a line was finished
4601 and the command on that line reported an error. */
4604 do_spec_1 (const char *spec, int inswitch, const char *soft_matched_part)
4606 const char *p = spec;
4612 /* If substituting a switch, treat all chars like letters.
4613 Otherwise, NL, SPC, TAB and % are special. */
4614 switch (inswitch ? 'a' : c)
4619 if (argbuf_index > 0 && !strcmp (argbuf[argbuf_index - 1], "|"))
4621 /* A `|' before the newline means use a pipe here,
4622 but only if -pipe was specified.
4623 Otherwise, execute now and don't pass the `|' as an arg. */
4626 input_from_pipe = 1;
4633 set_collect_gcc_options ();
4635 if (argbuf_index > 0)
4641 /* Reinitialize for a new command, and for a new argument. */
4644 delete_this_arg = 0;
4645 this_is_output_file = 0;
4646 this_is_library_file = 0;
4647 input_from_pipe = 0;
4654 obstack_1grow (&obstack, c);
4662 /* Reinitialize for a new argument. */
4663 delete_this_arg = 0;
4664 this_is_output_file = 0;
4665 this_is_library_file = 0;
4672 fatal ("spec '%s' invalid", spec);
4675 obstack_grow (&obstack, input_basename, basename_length);
4680 obstack_grow (&obstack, input_basename, suffixed_basename_length);
4685 delete_this_arg = 2;
4688 /* Dump out the directories specified with LIBRARY_PATH,
4689 followed by the absolute directories
4690 that we search for startfiles. */
4693 struct spec_path_info info;
4696 info.append_len = 0;
4697 #ifdef RELATIVE_PREFIX_NOT_LINKDIR
4698 /* Used on systems which record the specified -L dirs
4699 and use them to search for dynamic linking.
4700 Relative directories always come from -B,
4701 and it is better not to use them for searching
4702 at run time. In particular, stage1 loses. */
4703 info.omit_relative = true;
4705 info.omit_relative = false;
4707 info.separate_options = false;
4709 for_each_path (&startfile_prefixes, true, 0, spec_path, &info);
4714 /* %efoo means report an error with `foo' as error message
4715 and don't execute any more commands for this file. */
4719 while (*p != 0 && *p != '\n')
4721 buf = alloca (p - q + 1);
4722 strncpy (buf, q, p - q);
4729 /* %nfoo means report a notice with `foo' on stderr. */
4733 while (*p != 0 && *p != '\n')
4735 buf = alloca (p - q + 1);
4736 strncpy (buf, q, p - q);
4738 notice ("%s\n", buf);
4748 /* If save_temps_flag is off, and the HOST_BIT_BUCKET is
4749 defined, and it is not a directory, and it is
4750 writable, use it. Otherwise, treat this like any
4751 other temporary file. */
4753 if ((!save_temps_flag)
4754 && (stat (HOST_BIT_BUCKET, &st) == 0) && (!S_ISDIR (st.st_mode))
4755 && (access (HOST_BIT_BUCKET, W_OK) == 0))
4757 obstack_grow (&obstack, HOST_BIT_BUCKET,
4758 strlen (HOST_BIT_BUCKET));
4759 delete_this_arg = 0;
4764 goto create_temp_file;
4768 obstack_1grow (&obstack, '-');
4769 delete_this_arg = 0;
4772 /* consume suffix */
4773 while (*p == '.' || ISALNUM ((unsigned char) *p))
4775 if (p[0] == '%' && p[1] == 'O')
4780 goto create_temp_file;
4784 /* consume suffix */
4785 while (*p == '.' || ISALNUM ((unsigned char) *p))
4787 if (p[0] == '%' && p[1] == 'O')
4792 goto create_temp_file;
4798 struct temp_name *t;
4800 const char *suffix = p;
4801 char *saved_suffix = NULL;
4803 while (*p == '.' || ISALNUM ((unsigned char) *p))
4805 suffix_length = p - suffix;
4806 if (p[0] == '%' && p[1] == 'O')
4809 /* We don't support extra suffix characters after %O. */
4810 if (*p == '.' || ISALNUM ((unsigned char) *p))
4811 fatal ("spec '%s' has invalid '%%0%c'", spec, *p);
4812 if (suffix_length == 0)
4813 suffix = TARGET_OBJECT_SUFFIX;
4817 = XNEWVEC (char, suffix_length
4818 + strlen (TARGET_OBJECT_SUFFIX));
4819 strncpy (saved_suffix, suffix, suffix_length);
4820 strcpy (saved_suffix + suffix_length,
4821 TARGET_OBJECT_SUFFIX);
4823 suffix_length += strlen (TARGET_OBJECT_SUFFIX);
4826 /* If the input_filename has the same suffix specified
4827 for the %g, %u, or %U, and -save-temps is specified,
4828 we could end up using that file as an intermediate
4829 thus clobbering the user's source file (.e.g.,
4830 gcc -save-temps foo.s would clobber foo.s with the
4831 output of cpp0). So check for this condition and
4832 generate a temp file as the intermediate. */
4834 if (save_temps_flag)
4838 temp_filename_length = basename_length + suffix_length;
4839 tmp = alloca (temp_filename_length + 1);
4840 strncpy (tmp, input_basename, basename_length);
4841 strncpy (tmp + basename_length, suffix, suffix_length);
4842 tmp[temp_filename_length] = '\0';
4843 temp_filename = tmp;
4844 if (strcmp (temp_filename, input_filename) != 0)
4846 #ifndef HOST_LACKS_INODE_NUMBERS
4847 struct stat st_temp;
4849 /* Note, set_input() resets input_stat_set to 0. */
4850 if (input_stat_set == 0)
4852 input_stat_set = stat (input_filename, &input_stat);
4853 if (input_stat_set >= 0)
4857 /* If we have the stat for the input_filename
4858 and we can do the stat for the temp_filename
4859 then the they could still refer to the same
4860 file if st_dev/st_ino's are the same. */
4861 if (input_stat_set != 1
4862 || stat (temp_filename, &st_temp) < 0
4863 || input_stat.st_dev != st_temp.st_dev
4864 || input_stat.st_ino != st_temp.st_ino)
4866 /* Just compare canonical pathnames. */
4867 char* input_realname = lrealpath (input_filename);
4868 char* temp_realname = lrealpath (temp_filename);
4869 bool files_differ = strcmp (input_realname, temp_realname);
4870 free (input_realname);
4871 free (temp_realname);
4875 temp_filename = save_string (temp_filename,
4876 temp_filename_length + 1);
4877 obstack_grow (&obstack, temp_filename,
4878 temp_filename_length);
4880 delete_this_arg = 0;
4886 /* See if we already have an association of %g/%u/%U and
4888 for (t = temp_names; t; t = t->next)
4889 if (t->length == suffix_length
4890 && strncmp (t->suffix, suffix, suffix_length) == 0
4891 && t->unique == (c == 'u' || c == 'U' || c == 'j'))
4894 /* Make a new association if needed. %u and %j
4896 if (t == 0 || c == 'u' || c == 'j')
4900 t = xmalloc (sizeof (struct temp_name));
4901 t->next = temp_names;
4904 t->length = suffix_length;
4907 t->suffix = saved_suffix;
4908 saved_suffix = NULL;
4911 t->suffix = save_string (suffix, suffix_length);
4912 t->unique = (c == 'u' || c == 'U' || c == 'j');
4913 temp_filename = make_temp_file (t->suffix);
4914 temp_filename_length = strlen (temp_filename);
4915 t->filename = temp_filename;
4916 t->filename_length = temp_filename_length;
4920 free (saved_suffix);
4922 obstack_grow (&obstack, t->filename, t->filename_length);
4923 delete_this_arg = 1;
4931 for (i = 0; (int) i < n_infiles; i++)
4932 if ((!infiles[i].language) || (infiles[i].language[0] != '*'))
4933 if (infiles[i].incompiler == input_file_compiler)
4935 store_arg (infiles[i].name, 0, 0);
4936 infiles[i].compiled = true;
4941 obstack_grow (&obstack, input_filename, input_filename_length);
4948 struct spec_path_info info;
4952 do_spec_1 ("-imultilib", 1, NULL);
4953 /* Make this a separate argument. */
4954 do_spec_1 (" ", 0, NULL);
4955 do_spec_1 (multilib_dir, 1, NULL);
4956 do_spec_1 (" ", 0, NULL);
4959 if (gcc_exec_prefix)
4961 do_spec_1 ("-iprefix", 1, NULL);
4962 /* Make this a separate argument. */
4963 do_spec_1 (" ", 0, NULL);
4964 do_spec_1 (gcc_exec_prefix, 1, NULL);
4965 do_spec_1 (" ", 0, NULL);
4968 if (target_system_root_changed ||
4969 (target_system_root && target_sysroot_hdrs_suffix))
4971 do_spec_1 ("-isysroot", 1, NULL);
4972 /* Make this a separate argument. */
4973 do_spec_1 (" ", 0, NULL);
4974 do_spec_1 (target_system_root, 1, NULL);
4975 if (target_sysroot_hdrs_suffix)
4976 do_spec_1 (target_sysroot_hdrs_suffix, 1, NULL);
4977 do_spec_1 (" ", 0, NULL);
4980 info.option = "-isystem";
4981 info.append = "include";
4982 info.append_len = strlen (info.append);
4983 info.omit_relative = false;
4984 info.separate_options = true;
4986 for_each_path (&include_prefixes, false, info.append_len,
4989 info.append = "include-fixed";
4990 if (*sysroot_hdrs_suffix_spec)
4991 info.append = concat (info.append, dir_separator_str,
4992 multilib_dir, NULL);
4993 info.append_len = strlen (info.append);
4994 for_each_path (&include_prefixes, false, info.append_len,
5001 int max = n_infiles;
5002 max += lang_specific_extra_outfiles;
5004 if (HAVE_GNU_LD && at_file_supplied)
5006 /* We are going to expand `%o' to `@FILE', where FILE
5007 is a newly-created temporary filename. The filenames
5008 that would usually be expanded in place of %o will be
5009 written to the temporary file. */
5011 char *temp_file = make_temp_file ("");
5014 int n_files, j, status;
5017 at_argument = concat ("@", temp_file, NULL);
5018 store_arg (at_argument, 0, 0);
5020 /* Convert OUTFILES into a form suitable for writeargv. */
5022 /* Determine how many are non-NULL. */
5023 for (n_files = 0, i = 0; i < max; i++)
5024 n_files += outfiles[i] != NULL;
5026 argv = alloca (sizeof (char *) * (n_files + 1));
5028 /* Copy the strings over. */
5029 for (i = 0, j = 0; i < max; i++)
5032 argv[j] = (char *) CONST_CAST (outfiles[i]);
5037 f = fopen (temp_file, "w");
5040 fatal ("could not open temporary response file %s",
5043 status = writeargv (argv, f);
5046 fatal ("could not write to temporary response file %s",
5049 status = fclose (f);
5052 fatal ("could not close temporary response file %s",
5055 record_temp_file (temp_file, !save_temps_flag, !save_temps_flag);
5058 for (i = 0; i < max; i++)
5060 store_arg (outfiles[i], 0, 0);
5065 obstack_grow (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX));
5070 this_is_library_file = 1;
5074 outfiles[input_file_number] = NULL;
5078 this_is_output_file = 1;
5083 int cur_index = argbuf_index;
5084 /* Handle the {...} following the %W. */
5086 fatal ("spec '%s' has invalid '%%W%c", spec, *p);
5087 p = handle_braces (p + 1);
5091 /* If any args were output, mark the last one for deletion
5093 if (argbuf_index != cur_index)
5094 record_temp_file (argbuf[argbuf_index - 1], 0, 1);
5098 /* %x{OPTION} records OPTION for %X to output. */
5104 /* Skip past the option value and make a copy. */
5106 fatal ("spec '%s' has invalid '%%x%c'", spec, *p);
5109 string = save_string (p1 + 1, p - p1 - 2);
5111 /* See if we already recorded this option. */
5112 for (i = 0; i < n_linker_options; i++)
5113 if (! strcmp (string, linker_options[i]))
5119 /* This option is new; add it. */
5120 add_linker_option (string, strlen (string));
5124 /* Dump out the options accumulated previously using %x. */
5126 for (i = 0; i < n_linker_options; i++)
5128 do_spec_1 (linker_options[i], 1, NULL);
5129 /* Make each accumulated option a separate argument. */
5130 do_spec_1 (" ", 0, NULL);
5134 /* Dump out the options accumulated previously using -Wa,. */
5136 for (i = 0; i < n_assembler_options; i++)
5138 do_spec_1 (assembler_options[i], 1, NULL);
5139 /* Make each accumulated option a separate argument. */
5140 do_spec_1 (" ", 0, NULL);
5144 /* Dump out the options accumulated previously using -Wp,. */
5146 for (i = 0; i < n_preprocessor_options; i++)
5148 do_spec_1 (preprocessor_options[i], 1, NULL);
5149 /* Make each accumulated option a separate argument. */
5150 do_spec_1 (" ", 0, NULL);
5154 /* Here are digits and numbers that just process
5155 a certain constant string as a spec. */
5158 value = do_spec_1 (cc1_spec, 0, NULL);
5164 value = do_spec_1 (cc1plus_spec, 0, NULL);
5170 value = do_spec_1 (asm_spec, 0, NULL);
5176 value = do_spec_1 (asm_final_spec, 0, NULL);
5183 const char *const spec
5184 = (input_file_compiler->cpp_spec
5185 ? input_file_compiler->cpp_spec
5187 value = do_spec_1 (spec, 0, NULL);
5194 value = do_spec_1 (endfile_spec, 0, NULL);
5200 value = do_spec_1 (link_spec, 0, NULL);
5206 value = do_spec_1 (lib_spec, 0, NULL);
5212 value = do_spec_1 (libgcc_spec, 0, NULL);
5218 /* We assume there is a directory
5219 separator at the end of this string. */
5220 if (target_system_root)
5222 obstack_grow (&obstack, target_system_root,
5223 strlen (target_system_root));
5224 if (target_sysroot_suffix)
5225 obstack_grow (&obstack, target_sysroot_suffix,
5226 strlen (target_sysroot_suffix));
5231 value = do_spec_1 (startfile_spec, 0, NULL);
5236 /* Here we define characters other than letters and digits. */
5239 p = handle_braces (p);
5245 p = handle_spec_function (p);
5251 obstack_1grow (&obstack, '%');
5258 while (p[len] && p[len] != ' ' && p[len] != '%')
5260 suffix_subst = save_string (p - 1, len + 1);
5265 /* Henceforth ignore the option(s) matching the pattern
5270 int have_wildcard = 0;
5273 while (p[len] && p[len] != ' ' && p[len] != '\t')
5276 if (p[len-1] == '*')
5279 for (i = 0; i < n_switches; i++)
5280 if (!strncmp (switches[i].part1, p, len - have_wildcard)
5281 && (have_wildcard || switches[i].part1[len] == '\0'))
5283 switches[i].live_cond = SWITCH_IGNORE;
5284 switches[i].validated = 1;
5292 if (soft_matched_part)
5294 do_spec_1 (soft_matched_part, 1, NULL);
5295 do_spec_1 (" ", 0, NULL);
5298 /* Catch the case where a spec string contains something like
5299 '%{foo:%*}'. i.e. there is no * in the pattern on the left
5300 hand side of the :. */
5301 error ("spec failure: '%%*' has not been initialized by pattern match");
5304 /* Process a string found as the value of a spec given by name.
5305 This feature allows individual machine descriptions
5306 to add and use their own specs.
5307 %[...] modifies -D options the way %P does;
5308 %(...) uses the spec unmodified. */
5310 error ("warning: use of obsolete %%[ operator in specs");
5313 const char *name = p;
5314 struct spec_list *sl;
5317 /* The string after the S/P is the name of a spec that is to be
5319 while (*p && *p != ')' && *p != ']')
5322 /* See if it's in the list. */
5323 for (len = p - name, sl = specs; sl; sl = sl->next)
5324 if (sl->name_len == len && !strncmp (sl->name, name, len))
5326 name = *(sl->ptr_spec);
5328 notice ("Processing spec %c%s%c, which is '%s'\n",
5329 c, sl->name, (c == '(') ? ')' : ']', name);
5338 value = do_spec_1 (name, 0, NULL);
5344 char *x = alloca (strlen (name) * 2 + 1);
5346 const char *y = name;
5349 /* Copy all of NAME into BUF, but put __ after
5350 every -D and at the end of each arg. */
5353 if (! strncmp (y, "-D", 2))
5364 && (*y == ' ' || *y == '\t' || *y == '='
5365 || *y == '}' || *y == 0))
5378 value = do_spec_1 (buf, 0, NULL);
5384 /* Discard the closing paren or bracket. */
5391 error ("spec failure: unrecognized spec option '%c'", c);
5397 /* Backslash: treat next character as ordinary. */
5402 /* Ordinary character: put it into the current argument. */
5403 obstack_1grow (&obstack, c);
5407 /* End of string. If we are processing a spec function, we need to
5408 end any pending argument. */
5409 if (processing_spec_function)
5415 /* Look up a spec function. */
5417 static const struct spec_function *
5418 lookup_spec_function (const char *name)
5420 const struct spec_function *sf;
5422 for (sf = static_spec_functions; sf->name != NULL; sf++)
5423 if (strcmp (sf->name, name) == 0)
5429 /* Evaluate a spec function. */
5432 eval_spec_function (const char *func, const char *args)
5434 const struct spec_function *sf;
5435 const char *funcval;
5437 /* Saved spec processing context. */
5438 int save_argbuf_index;
5439 int save_argbuf_length;
5440 const char **save_argbuf;
5443 int save_delete_this_arg;
5444 int save_this_is_output_file;
5445 int save_this_is_library_file;
5446 int save_input_from_pipe;
5447 const char *save_suffix_subst;
5450 sf = lookup_spec_function (func);
5452 fatal ("unknown spec function '%s'", func);
5454 /* Push the spec processing context. */
5455 save_argbuf_index = argbuf_index;
5456 save_argbuf_length = argbuf_length;
5457 save_argbuf = argbuf;
5459 save_arg_going = arg_going;
5460 save_delete_this_arg = delete_this_arg;
5461 save_this_is_output_file = this_is_output_file;
5462 save_this_is_library_file = this_is_library_file;
5463 save_input_from_pipe = input_from_pipe;
5464 save_suffix_subst = suffix_subst;
5466 /* Create a new spec processing context, and build the function
5470 if (do_spec_2 (args) < 0)
5471 fatal ("error in args to spec function '%s'", func);
5473 /* argbuf_index is an index for the next argument to be inserted, and
5474 so contains the count of the args already inserted. */
5476 funcval = (*sf->func) (argbuf_index, argbuf);
5478 /* Pop the spec processing context. */
5479 argbuf_index = save_argbuf_index;
5480 argbuf_length = save_argbuf_length;
5482 argbuf = save_argbuf;
5484 arg_going = save_arg_going;
5485 delete_this_arg = save_delete_this_arg;
5486 this_is_output_file = save_this_is_output_file;
5487 this_is_library_file = save_this_is_library_file;
5488 input_from_pipe = save_input_from_pipe;
5489 suffix_subst = save_suffix_subst;
5494 /* Handle a spec function call of the form:
5498 ARGS is processed as a spec in a separate context and split into an
5499 argument vector in the normal fashion. The function returns a string
5500 containing a spec which we then process in the caller's context, or
5501 NULL if no processing is required. */
5504 handle_spec_function (const char *p)
5507 const char *endp, *funcval;
5510 processing_spec_function++;
5512 /* Get the function name. */
5513 for (endp = p; *endp != '\0'; endp++)
5515 if (*endp == '(') /* ) */
5517 /* Only allow [A-Za-z0-9], -, and _ in function names. */
5518 if (!ISALNUM (*endp) && !(*endp == '-' || *endp == '_'))
5519 fatal ("malformed spec function name");
5521 if (*endp != '(') /* ) */
5522 fatal ("no arguments for spec function");
5523 func = save_string (p, endp - p);
5526 /* Get the arguments. */
5527 for (count = 0; *endp != '\0'; endp++)
5536 else if (*endp == '(') /* ) */
5541 fatal ("malformed spec function arguments");
5542 args = save_string (p, endp - p);
5545 /* p now points to just past the end of the spec function expression. */
5547 funcval = eval_spec_function (func, args);
5548 if (funcval != NULL && do_spec_1 (funcval, 0, NULL) < 0)
5554 processing_spec_function--;
5559 /* Inline subroutine of handle_braces. Returns true if the current
5560 input suffix matches the atom bracketed by ATOM and END_ATOM. */
5562 input_suffix_matches (const char *atom, const char *end_atom)
5564 return (input_suffix
5565 && !strncmp (input_suffix, atom, end_atom - atom)
5566 && input_suffix[end_atom - atom] == '\0');
5569 /* Subroutine of handle_braces. Returns true if the current
5570 input file's spec name matches the atom bracketed by ATOM and END_ATOM. */
5572 input_spec_matches (const char *atom, const char *end_atom)
5574 return (input_file_compiler
5575 && input_file_compiler->suffix
5576 && input_file_compiler->suffix[0] != '\0'
5577 && !strncmp (input_file_compiler->suffix + 1, atom,
5579 && input_file_compiler->suffix[end_atom - atom + 1] == '\0');
5582 /* Subroutine of handle_braces. Returns true if a switch
5583 matching the atom bracketed by ATOM and END_ATOM appeared on the
5586 switch_matches (const char *atom, const char *end_atom, int starred)
5589 int len = end_atom - atom;
5590 int plen = starred ? len : -1;
5592 for (i = 0; i < n_switches; i++)
5593 if (!strncmp (switches[i].part1, atom, len)
5594 && (starred || switches[i].part1[len] == '\0')
5595 && check_live_switch (i, plen))
5601 /* Inline subroutine of handle_braces. Mark all of the switches which
5602 match ATOM (extends to END_ATOM; STARRED indicates whether there
5603 was a star after the atom) for later processing. */
5605 mark_matching_switches (const char *atom, const char *end_atom, int starred)
5608 int len = end_atom - atom;
5609 int plen = starred ? len : -1;
5611 for (i = 0; i < n_switches; i++)
5612 if (!strncmp (switches[i].part1, atom, len)
5613 && (starred || switches[i].part1[len] == '\0')
5614 && check_live_switch (i, plen))
5615 switches[i].ordering = 1;
5618 /* Inline subroutine of handle_braces. Process all the currently
5619 marked switches through give_switch, and clear the marks. */
5621 process_marked_switches (void)
5625 for (i = 0; i < n_switches; i++)
5626 if (switches[i].ordering == 1)
5628 switches[i].ordering = 0;
5633 /* Handle a %{ ... } construct. P points just inside the leading {.
5634 Returns a pointer one past the end of the brace block, or 0
5635 if we call do_spec_1 and that returns -1. */
5638 handle_braces (const char *p)
5640 const char *atom, *end_atom;
5641 const char *d_atom = NULL, *d_end_atom = NULL;
5642 const char *orig = p;
5650 bool a_must_be_last = false;
5651 bool ordered_set = false;
5652 bool disjunct_set = false;
5653 bool disj_matched = false;
5654 bool disj_starred = true;
5655 bool n_way_choice = false;
5656 bool n_way_matched = false;
5658 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
5665 /* Scan one "atom" (S in the description above of %{}, possibly
5666 with '!', '.', '@', ',', or '*' modifiers). */
5668 a_is_suffix = false;
5669 a_is_starred = false;
5670 a_is_negated = false;
5671 a_is_spectype = false;
5675 p++, a_is_negated = true;
5679 p++, a_is_suffix = true;
5681 p++, a_is_spectype = true;
5684 while (ISIDNUM(*p) || *p == '-' || *p == '+' || *p == '='
5685 || *p == ',' || *p == '.' || *p == '@')
5690 p++, a_is_starred = 1;
5696 /* Substitute the switch(es) indicated by the current atom. */
5698 if (disjunct_set || n_way_choice || a_is_negated || a_is_suffix
5699 || a_is_spectype || atom == end_atom)
5702 mark_matching_switches (atom, end_atom, a_is_starred);
5705 process_marked_switches ();
5709 /* Substitute some text if the current atom appears as a switch
5711 disjunct_set = true;
5715 if (atom == end_atom)
5717 if (!n_way_choice || disj_matched || *p == '|'
5718 || a_is_negated || a_is_suffix || a_is_spectype
5722 /* An empty term may appear as the last choice of an
5723 N-way choice set; it means "otherwise". */
5724 a_must_be_last = true;
5725 disj_matched = !n_way_matched;
5726 disj_starred = false;
5730 if ((a_is_suffix || a_is_spectype) && a_is_starred)
5734 disj_starred = false;
5736 /* Don't bother testing this atom if we already have a
5738 if (!disj_matched && !n_way_matched)
5741 a_matched = input_suffix_matches (atom, end_atom);
5742 else if (a_is_spectype)
5743 a_matched = input_spec_matches (atom, end_atom);
5745 a_matched = switch_matches (atom, end_atom, a_is_starred);
5747 if (a_matched != a_is_negated)
5749 disj_matched = true;
5751 d_end_atom = end_atom;
5758 /* Found the body, that is, the text to substitute if the
5759 current disjunction matches. */
5760 p = process_brace_body (p + 1, d_atom, d_end_atom, disj_starred,
5761 disj_matched && !n_way_matched);
5765 /* If we have an N-way choice, reset state for the next
5769 n_way_choice = true;
5770 n_way_matched |= disj_matched;
5771 disj_matched = false;
5772 disj_starred = true;
5773 d_atom = d_end_atom = NULL;
5782 while (*p++ != '}');
5787 fatal ("braced spec '%s' is invalid at '%c'", orig, *p);
5792 /* Subroutine of handle_braces. Scan and process a brace substitution body
5793 (X in the description of %{} syntax). P points one past the colon;
5794 ATOM and END_ATOM bracket the first atom which was found to be true
5795 (present) in the current disjunction; STARRED indicates whether all
5796 the atoms in the current disjunction were starred (for syntax validation);
5797 MATCHED indicates whether the disjunction matched or not, and therefore
5798 whether or not the body is to be processed through do_spec_1 or just
5799 skipped. Returns a pointer to the closing } or ;, or 0 if do_spec_1
5803 process_brace_body (const char *p, const char *atom, const char *end_atom,
5804 int starred, int matched)
5806 const char *body, *end_body;
5807 unsigned int nesting_level;
5808 bool have_subst = false;
5810 /* Locate the closing } or ;, honoring nested braces.
5811 Trim trailing whitespace. */
5820 if (!--nesting_level)
5823 else if (*p == ';' && nesting_level == 1)
5825 else if (*p == '%' && p[1] == '*' && nesting_level == 1)
5827 else if (*p == '\0')
5833 while (end_body[-1] == ' ' || end_body[-1] == '\t')
5836 if (have_subst && !starred)
5841 /* Copy the substitution body to permanent storage and execute it.
5842 If have_subst is false, this is a simple matter of running the
5843 body through do_spec_1... */
5844 char *string = save_string (body, end_body - body);
5847 if (do_spec_1 (string, 0, NULL) < 0)
5852 /* ... but if have_subst is true, we have to process the
5853 body once for each matching switch, with %* set to the
5854 variant part of the switch. */
5855 unsigned int hard_match_len = end_atom - atom;
5858 for (i = 0; i < n_switches; i++)
5859 if (!strncmp (switches[i].part1, atom, hard_match_len)
5860 && check_live_switch (i, hard_match_len))
5862 if (do_spec_1 (string, 0,
5863 &switches[i].part1[hard_match_len]) < 0)
5865 /* Pass any arguments this switch has. */
5867 suffix_subst = NULL;
5875 fatal ("braced spec body '%s' is invalid", body);
5878 /* Return 0 iff switch number SWITCHNUM is obsoleted by a later switch
5879 on the command line. PREFIX_LENGTH is the length of XXX in an {XXX*}
5880 spec, or -1 if either exact match or %* is used.
5882 A -O switch is obsoleted by a later -O switch. A -f, -m, or -W switch
5883 whose value does not begin with "no-" is obsoleted by the same value
5884 with the "no-", similarly for a switch with the "no-" prefix. */
5887 check_live_switch (int switchnum, int prefix_length)
5889 const char *name = switches[switchnum].part1;
5892 /* In the common case of {<at-most-one-letter>*}, a negating
5893 switch would always match, so ignore that case. We will just
5894 send the conflicting switches to the compiler phase. */
5895 if (prefix_length >= 0 && prefix_length <= 1)
5898 /* If we already processed this switch and determined if it was
5899 live or not, return our past determination. */
5900 if (switches[switchnum].live_cond != 0)
5901 return switches[switchnum].live_cond > 0;
5903 /* Now search for duplicate in a manner that depends on the name. */
5907 for (i = switchnum + 1; i < n_switches; i++)
5908 if (switches[i].part1[0] == 'O')
5910 switches[switchnum].validated = 1;
5911 switches[switchnum].live_cond = SWITCH_FALSE;
5916 case 'W': case 'f': case 'm':
5917 if (! strncmp (name + 1, "no-", 3))
5919 /* We have Xno-YYY, search for XYYY. */
5920 for (i = switchnum + 1; i < n_switches; i++)
5921 if (switches[i].part1[0] == name[0]
5922 && ! strcmp (&switches[i].part1[1], &name[4]))
5924 switches[switchnum].validated = 1;
5925 switches[switchnum].live_cond = SWITCH_FALSE;
5931 /* We have XYYY, search for Xno-YYY. */
5932 for (i = switchnum + 1; i < n_switches; i++)
5933 if (switches[i].part1[0] == name[0]
5934 && switches[i].part1[1] == 'n'
5935 && switches[i].part1[2] == 'o'
5936 && switches[i].part1[3] == '-'
5937 && !strcmp (&switches[i].part1[4], &name[1]))
5939 switches[switchnum].validated = 1;
5940 switches[switchnum].live_cond = SWITCH_FALSE;
5947 /* Otherwise the switch is live. */
5948 switches[switchnum].live_cond = SWITCH_LIVE;
5952 /* Pass a switch to the current accumulating command
5953 in the same form that we received it.
5954 SWITCHNUM identifies the switch; it is an index into
5955 the vector of switches gcc received, which is `switches'.
5956 This cannot fail since it never finishes a command line.
5958 If OMIT_FIRST_WORD is nonzero, then we omit .part1 of the argument. */
5961 give_switch (int switchnum, int omit_first_word)
5963 if (switches[switchnum].live_cond == SWITCH_IGNORE)
5966 if (!omit_first_word)
5968 do_spec_1 ("-", 0, NULL);
5969 do_spec_1 (switches[switchnum].part1, 1, NULL);
5972 if (switches[switchnum].args != 0)
5975 for (p = switches[switchnum].args; *p; p++)
5977 const char *arg = *p;
5979 do_spec_1 (" ", 0, NULL);
5982 unsigned length = strlen (arg);
5985 while (length-- && !IS_DIR_SEPARATOR (arg[length]))
5986 if (arg[length] == '.')
5988 ((char *)CONST_CAST(arg))[length] = 0;
5992 do_spec_1 (arg, 1, NULL);
5994 ((char *)CONST_CAST(arg))[length] = '.';
5995 do_spec_1 (suffix_subst, 1, NULL);
5998 do_spec_1 (arg, 1, NULL);
6002 do_spec_1 (" ", 0, NULL);
6003 switches[switchnum].validated = 1;
6006 /* Search for a file named NAME trying various prefixes including the
6007 user's -B prefix and some standard ones.
6008 Return the absolute file name found. If nothing is found, return NAME. */
6011 find_file (const char *name)
6013 char *newname = find_a_file (&startfile_prefixes, name, R_OK, true);
6014 return newname ? newname : name;
6017 /* Determine whether a directory exists. If LINKER, return 0 for
6018 certain fixed names not needed by the linker. */
6021 is_directory (const char *path1, bool linker)
6028 /* Ensure the string ends with "/.". The resulting path will be a
6029 directory even if the given path is a symbolic link. */
6030 len1 = strlen (path1);
6031 path = alloca (3 + len1);
6032 memcpy (path, path1, len1);
6034 if (!IS_DIR_SEPARATOR (cp[-1]))
6035 *cp++ = DIR_SEPARATOR;
6039 /* Exclude directories that the linker is known to search. */
6041 && IS_DIR_SEPARATOR (path[0])
6043 && strncmp (path + 1, "lib", 3) == 0)
6045 && strncmp (path + 1, "usr", 3) == 0
6046 && IS_DIR_SEPARATOR (path[4])
6047 && strncmp (path + 5, "lib", 3) == 0)))
6050 return (stat (path, &st) >= 0 && S_ISDIR (st.st_mode));
6053 /* Set up the various global variables to indicate that we're processing
6054 the input file named FILENAME. */
6057 set_input (const char *filename)
6061 input_filename = filename;
6062 input_filename_length = strlen (input_filename);
6064 input_basename = input_filename;
6065 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
6066 /* Skip drive name so 'x:foo' is handled properly. */
6067 if (input_basename[1] == ':')
6068 input_basename += 2;
6070 for (p = input_basename; *p; p++)
6071 if (IS_DIR_SEPARATOR (*p))
6072 input_basename = p + 1;
6074 /* Find a suffix starting with the last period,
6075 and set basename_length to exclude that suffix. */
6076 basename_length = strlen (input_basename);
6077 suffixed_basename_length = basename_length;
6078 p = input_basename + basename_length;
6079 while (p != input_basename && *p != '.')
6081 if (*p == '.' && p != input_basename)
6083 basename_length = p - input_basename;
6084 input_suffix = p + 1;
6089 /* If a spec for 'g', 'u', or 'U' is seen with -save-temps then
6090 we will need to do a stat on the input_filename. The
6091 INPUT_STAT_SET signals that the stat is needed. */
6095 /* On fatal signals, delete all the temporary files. */
6098 fatal_error (int signum)
6100 signal (signum, SIG_DFL);
6101 delete_failure_queue ();
6102 delete_temp_files ();
6103 /* Get the same signal again, this time not handled,
6104 so its normal effect occurs. */
6105 kill (getpid (), signum);
6108 extern int main (int, char **);
6111 main (int argc, char **argv)
6115 int linker_was_run = 0;
6116 int lang_n_infiles = 0;
6117 int num_linker_inputs = 0;
6118 char *explicit_link_files;
6121 struct user_specs *uptr;
6122 char **old_argv = argv;
6124 p = argv[0] + strlen (argv[0]);
6125 while (p != argv[0] && !IS_DIR_SEPARATOR (p[-1]))
6129 xmalloc_set_program_name (programname);
6131 expandargv (&argc, &argv);
6133 /* Determine if any expansions were made. */
6134 if (argv != old_argv)
6135 at_file_supplied = true;
6137 prune_options (&argc, &argv);
6139 #ifdef GCC_DRIVER_HOST_INITIALIZATION
6140 /* Perform host dependent initialization when needed. */
6141 GCC_DRIVER_HOST_INITIALIZATION;
6144 /* Unlock the stdio streams. */
6145 unlock_std_streams ();
6147 gcc_init_libintl ();
6149 if (signal (SIGINT, SIG_IGN) != SIG_IGN)
6150 signal (SIGINT, fatal_error);
6152 if (signal (SIGHUP, SIG_IGN) != SIG_IGN)
6153 signal (SIGHUP, fatal_error);
6155 if (signal (SIGTERM, SIG_IGN) != SIG_IGN)
6156 signal (SIGTERM, fatal_error);
6158 if (signal (SIGPIPE, SIG_IGN) != SIG_IGN)
6159 signal (SIGPIPE, fatal_error);
6162 /* We *MUST* set SIGCHLD to SIG_DFL so that the wait4() call will
6163 receive the signal. A different setting is inheritable */
6164 signal (SIGCHLD, SIG_DFL);
6167 /* Allocate the argument vector. */
6170 obstack_init (&obstack);
6172 /* Build multilib_select, et. al from the separate lines that make up each
6173 multilib selection. */
6175 const char *const *q = multilib_raw;
6178 obstack_init (&multilib_obstack);
6179 while ((p = *q++) != (char *) 0)
6180 obstack_grow (&multilib_obstack, p, strlen (p));
6182 obstack_1grow (&multilib_obstack, 0);
6183 multilib_select = XOBFINISH (&multilib_obstack, const char *);
6185 q = multilib_matches_raw;
6186 while ((p = *q++) != (char *) 0)
6187 obstack_grow (&multilib_obstack, p, strlen (p));
6189 obstack_1grow (&multilib_obstack, 0);
6190 multilib_matches = XOBFINISH (&multilib_obstack, const char *);
6192 q = multilib_exclusions_raw;
6193 while ((p = *q++) != (char *) 0)
6194 obstack_grow (&multilib_obstack, p, strlen (p));
6196 obstack_1grow (&multilib_obstack, 0);
6197 multilib_exclusions = XOBFINISH (&multilib_obstack, const char *);
6200 for (i = 0; i < ARRAY_SIZE (multilib_defaults_raw); i++)
6203 obstack_1grow (&multilib_obstack, ' ');
6204 obstack_grow (&multilib_obstack,
6205 multilib_defaults_raw[i],
6206 strlen (multilib_defaults_raw[i]));
6210 obstack_1grow (&multilib_obstack, 0);
6211 multilib_defaults = XOBFINISH (&multilib_obstack, const char *);
6214 /* Set up to remember the pathname of gcc and any options
6215 needed for collect. We use argv[0] instead of programname because
6216 we need the complete pathname. */
6217 obstack_init (&collect_obstack);
6218 obstack_grow (&collect_obstack, "COLLECT_GCC=", sizeof ("COLLECT_GCC=") - 1);
6219 obstack_grow (&collect_obstack, argv[0], strlen (argv[0]) + 1);
6220 putenv (XOBFINISH (&collect_obstack, char *));
6222 #ifdef INIT_ENVIRONMENT
6223 /* Set up any other necessary machine specific environment variables. */
6224 putenv (INIT_ENVIRONMENT);
6227 /* Make a table of what switches there are (switches, n_switches).
6228 Make a table of specified input files (infiles, n_infiles).
6229 Decode switches that are handled locally. */
6231 process_command (argc, (const char **) argv);
6233 /* Initialize the vector of specs to just the default.
6234 This means one element containing 0s, as a terminator. */
6236 compilers = xmalloc (sizeof default_compilers);
6237 memcpy (compilers, default_compilers, sizeof default_compilers);
6238 n_compilers = n_default_compilers;
6240 /* Read specs from a file if there is one. */
6242 machine_suffix = concat (spec_machine, dir_separator_str,
6243 spec_version, dir_separator_str, NULL);
6244 just_machine_suffix = concat (spec_machine, dir_separator_str, NULL);
6246 specs_file = find_a_file (&startfile_prefixes, "specs", R_OK, true);
6247 /* Read the specs file unless it is a default one. */
6248 if (specs_file != 0 && strcmp (specs_file, "specs"))
6249 read_specs (specs_file, TRUE);
6253 /* We need to check standard_exec_prefix/just_machine_suffix/specs
6254 for any override of as, ld and libraries. */
6255 specs_file = alloca (strlen (standard_exec_prefix)
6256 + strlen (just_machine_suffix) + sizeof ("specs"));
6258 strcpy (specs_file, standard_exec_prefix);
6259 strcat (specs_file, just_machine_suffix);
6260 strcat (specs_file, "specs");
6261 if (access (specs_file, R_OK) == 0)
6262 read_specs (specs_file, TRUE);
6264 /* Process any configure-time defaults specified for the command line
6265 options, via OPTION_DEFAULT_SPECS. */
6266 for (i = 0; i < ARRAY_SIZE (option_default_specs); i++)
6267 do_option_spec (option_default_specs[i].name,
6268 option_default_specs[i].spec);
6270 /* Process DRIVER_SELF_SPECS, adding any new options to the end
6271 of the command line. */
6273 for (i = 0; i < ARRAY_SIZE (driver_self_specs); i++)
6274 do_self_spec (driver_self_specs[i]);
6276 /* If not cross-compiling, look for executables in the standard
6278 if (*cross_compile == '0')
6280 if (*md_exec_prefix)
6282 add_prefix (&exec_prefixes, md_exec_prefix, "GCC",
6283 PREFIX_PRIORITY_LAST, 0, 0);
6287 /* Process sysroot_suffix_spec. */
6288 if (*sysroot_suffix_spec != 0
6289 && do_spec_2 (sysroot_suffix_spec) == 0)
6291 if (argbuf_index > 1)
6292 error ("spec failure: more than one arg to SYSROOT_SUFFIX_SPEC");
6293 else if (argbuf_index == 1)
6294 target_sysroot_suffix = xstrdup (argbuf[argbuf_index -1]);
6297 #ifdef HAVE_LD_SYSROOT
6298 /* Pass the --sysroot option to the linker, if it supports that. If
6299 there is a sysroot_suffix_spec, it has already been processed by
6300 this point, so target_system_root really is the system root we
6302 if (target_system_root)
6304 obstack_grow (&obstack, "%(sysroot_spec) ", strlen ("%(sysroot_spec) "));
6305 obstack_grow0 (&obstack, link_spec, strlen (link_spec));
6306 set_spec ("link", XOBFINISH (&obstack, const char *));
6310 /* Process sysroot_hdrs_suffix_spec. */
6311 if (*sysroot_hdrs_suffix_spec != 0
6312 && do_spec_2 (sysroot_hdrs_suffix_spec) == 0)
6314 if (argbuf_index > 1)
6315 error ("spec failure: more than one arg to SYSROOT_HEADERS_SUFFIX_SPEC");
6316 else if (argbuf_index == 1)
6317 target_sysroot_hdrs_suffix = xstrdup (argbuf[argbuf_index -1]);
6320 /* Look for startfiles in the standard places. */
6321 if (*startfile_prefix_spec != 0
6322 && do_spec_2 (startfile_prefix_spec) == 0
6323 && do_spec_1 (" ", 0, NULL) == 0)
6326 for (ndx = 0; ndx < argbuf_index; ndx++)
6327 add_sysrooted_prefix (&startfile_prefixes, argbuf[ndx], "BINUTILS",
6328 PREFIX_PRIORITY_LAST, 0, 1);
6330 /* We should eventually get rid of all these and stick to
6331 startfile_prefix_spec exclusively. */
6332 else if (*cross_compile == '0' || target_system_root)
6334 if (*md_startfile_prefix)
6335 add_sysrooted_prefix (&startfile_prefixes, md_startfile_prefix,
6336 "GCC", PREFIX_PRIORITY_LAST, 0, 1);
6338 if (*md_startfile_prefix_1)
6339 add_sysrooted_prefix (&startfile_prefixes, md_startfile_prefix_1,
6340 "GCC", PREFIX_PRIORITY_LAST, 0, 1);
6342 /* If standard_startfile_prefix is relative, base it on
6343 standard_exec_prefix. This lets us move the installed tree
6344 as a unit. If GCC_EXEC_PREFIX is defined, base
6345 standard_startfile_prefix on that as well.
6347 If the prefix is relative, only search it for native compilers;
6348 otherwise we will search a directory containing host libraries. */
6349 if (IS_ABSOLUTE_PATH (standard_startfile_prefix))
6350 add_sysrooted_prefix (&startfile_prefixes,
6351 standard_startfile_prefix, "BINUTILS",
6352 PREFIX_PRIORITY_LAST, 0, 1);
6353 else if (*cross_compile == '0')
6355 add_prefix (&startfile_prefixes,
6356 concat (gcc_exec_prefix
6357 ? gcc_exec_prefix : standard_exec_prefix,
6359 standard_startfile_prefix, NULL),
6360 NULL, PREFIX_PRIORITY_LAST, 0, 1);
6363 /* Sysrooted prefixes are relocated because target_system_root is
6364 also relocated by gcc_exec_prefix. */
6365 if (*standard_startfile_prefix_1)
6366 add_sysrooted_prefix (&startfile_prefixes,
6367 standard_startfile_prefix_1, "BINUTILS",
6368 PREFIX_PRIORITY_LAST, 0, 1);
6369 if (*standard_startfile_prefix_2)
6370 add_sysrooted_prefix (&startfile_prefixes,
6371 standard_startfile_prefix_2, "BINUTILS",
6372 PREFIX_PRIORITY_LAST, 0, 1);
6375 /* Process any user specified specs in the order given on the command
6377 for (uptr = user_specs_head; uptr; uptr = uptr->next)
6379 char *filename = find_a_file (&startfile_prefixes, uptr->filename,
6381 read_specs (filename ? filename : uptr->filename, FALSE);
6384 /* If we have a GCC_EXEC_PREFIX envvar, modify it for cpp's sake. */
6385 if (gcc_exec_prefix)
6386 gcc_exec_prefix = concat (gcc_exec_prefix, spec_machine, dir_separator_str,
6387 spec_version, dir_separator_str, NULL);
6389 /* Now we have the specs.
6390 Set the `valid' bits for switches that match anything in any spec. */
6392 validate_all_switches ();
6394 /* Now that we have the switches and the specs, set
6395 the subdirectory based on the options. */
6396 set_multilib_dir ();
6398 /* Warn about any switches that no pass was interested in. */
6400 for (i = 0; (int) i < n_switches; i++)
6401 if (! switches[i].validated)
6402 error ("unrecognized option '-%s'", switches[i].part1);
6404 /* Obey some of the options. */
6406 if (print_search_dirs)
6408 printf (_("install: %s%s\n"),
6409 gcc_exec_prefix ? gcc_exec_prefix : standard_exec_prefix,
6410 gcc_exec_prefix ? "" : machine_suffix);
6411 printf (_("programs: %s\n"),
6412 build_search_list (&exec_prefixes, "", false, false));
6413 printf (_("libraries: %s\n"),
6414 build_search_list (&startfile_prefixes, "", false, true));
6418 if (print_file_name)
6420 printf ("%s\n", find_file (print_file_name));
6424 if (print_prog_name)
6426 char *newname = find_a_file (&exec_prefixes, print_prog_name, X_OK, 0);
6427 printf ("%s\n", (newname ? newname : print_prog_name));
6431 if (print_multi_lib)
6433 print_multilib_info ();
6437 if (print_multi_directory)
6439 if (multilib_dir == NULL)
6442 printf ("%s\n", multilib_dir);
6446 if (print_multi_os_directory)
6448 if (multilib_os_dir == NULL)
6451 printf ("%s\n", multilib_os_dir);
6455 if (print_sysroot_headers_suffix)
6457 if (*sysroot_hdrs_suffix_spec)
6459 printf("%s\n", (target_sysroot_hdrs_suffix
6460 ? target_sysroot_hdrs_suffix
6465 /* The error status indicates that only one set of fixed
6466 headers should be built. */
6467 fatal ("not configured with sysroot headers suffix");
6470 if (print_help_list)
6476 printf (_("\nFor bug reporting instructions, please see:\n"));
6477 printf ("%s.\n", bug_report_url);
6482 /* We do not exit here. Instead we have created a fake input file
6483 called 'help-dummy' which needs to be compiled, and we pass this
6484 on the various sub-processes, along with the --help switch. */
6492 notice ("Target: %s\n", spec_machine);
6493 notice ("Configured with: %s\n", configuration_arguments);
6495 #ifdef THREAD_MODEL_SPEC
6496 /* We could have defined THREAD_MODEL_SPEC to "%*" by default,
6497 but there's no point in doing all this processing just to get
6498 thread_model back. */
6499 obstack_init (&obstack);
6500 do_spec_1 (THREAD_MODEL_SPEC, 0, thread_model);
6501 obstack_1grow (&obstack, '\0');
6502 thrmod = XOBFINISH (&obstack, const char *);
6504 thrmod = thread_model;
6507 notice ("Thread model: %s\n", thrmod);
6509 /* compiler_version is truncated at the first space when initialized
6510 from version string, so truncate version_string at the first space
6511 before comparing. */
6512 for (n = 0; version_string[n]; n++)
6513 if (version_string[n] == ' ')
6516 if (! strncmp (version_string, compiler_version, n)
6517 && compiler_version[n] == 0)
6518 notice ("gcc version %s\n", version_string);
6520 notice ("gcc driver version %s executing gcc version %s\n",
6521 version_string, compiler_version);
6527 if (n_infiles == added_libraries)
6528 fatal ("no input files");
6530 /* Make a place to record the compiler output file names
6531 that correspond to the input files. */
6534 i += lang_specific_extra_outfiles;
6535 outfiles = XCNEWVEC (const char *, i);
6537 /* Record which files were specified explicitly as link input. */
6539 explicit_link_files = XCNEWVEC (char, n_infiles);
6542 combine_inputs = true;
6544 combine_inputs = false;
6546 for (i = 0; (int) i < n_infiles; i++)
6548 const char *name = infiles[i].name;
6549 struct compiler *compiler = lookup_compiler (name,
6551 infiles[i].language);
6553 if (compiler && !(compiler->combinable))
6554 combine_inputs = false;
6556 if (lang_n_infiles > 0 && compiler != input_file_compiler
6557 && infiles[i].language && infiles[i].language[0] != '*')
6558 infiles[i].incompiler = compiler;
6562 input_file_compiler = compiler;
6563 infiles[i].incompiler = compiler;
6567 /* Since there is no compiler for this input file, assume it is a
6569 explicit_link_files[i] = 1;
6570 infiles[i].incompiler = NULL;
6572 infiles[i].compiled = false;
6573 infiles[i].preprocessed = false;
6576 if (!combine_inputs && have_c && have_o && lang_n_infiles > 1)
6577 fatal ("cannot specify -o with -c or -S with multiple files");
6579 if (combine_flag && save_temps_flag)
6581 bool save_combine_inputs = combine_inputs;
6582 /* Must do a separate pre-processing pass for C & Objective-C files, to
6583 obtain individual .i files. */
6585 combine_inputs = false;
6586 for (i = 0; (int) i < n_infiles; i++)
6588 int this_file_error = 0;
6590 input_file_number = i;
6591 set_input (infiles[i].name);
6592 if (infiles[i].incompiler
6593 && (infiles[i].incompiler)->needs_preprocessing)
6594 input_file_compiler = infiles[i].incompiler;
6598 if (input_file_compiler)
6600 if (input_file_compiler->spec[0] == '#')
6602 error ("%s: %s compiler not installed on this system",
6603 input_filename, &input_file_compiler->spec[1]);
6604 this_file_error = 1;
6608 value = do_spec (input_file_compiler->spec);
6609 infiles[i].preprocessed = true;
6610 if (!have_o_argbuf_index)
6611 fatal ("spec '%s' is invalid", input_file_compiler->spec);
6612 infiles[i].name = argbuf[have_o_argbuf_index];
6613 infiles[i].incompiler
6614 = lookup_compiler (infiles[i].name,
6615 strlen (infiles[i].name),
6616 infiles[i].language);
6619 this_file_error = 1;
6623 if (this_file_error)
6625 delete_failure_queue ();
6629 clear_failure_queue ();
6631 combine_inputs = save_combine_inputs;
6634 for (i = 0; (int) i < n_infiles; i++)
6636 int this_file_error = 0;
6638 /* Tell do_spec what to substitute for %i. */
6640 input_file_number = i;
6641 set_input (infiles[i].name);
6643 if (infiles[i].compiled)
6646 /* Use the same thing in %o, unless cp->spec says otherwise. */
6648 outfiles[i] = input_filename;
6650 /* Figure out which compiler from the file's suffix. */
6652 if (! combine_inputs)
6654 = lookup_compiler (infiles[i].name, input_filename_length,
6655 infiles[i].language);
6657 input_file_compiler = infiles[i].incompiler;
6659 if (input_file_compiler)
6661 /* Ok, we found an applicable compiler. Run its spec. */
6663 if (input_file_compiler->spec[0] == '#')
6665 error ("%s: %s compiler not installed on this system",
6666 input_filename, &input_file_compiler->spec[1]);
6667 this_file_error = 1;
6671 value = do_spec (input_file_compiler->spec);
6672 infiles[i].compiled = true;
6674 this_file_error = 1;
6678 /* If this file's name does not contain a recognized suffix,
6679 record it as explicit linker input. */
6682 explicit_link_files[i] = 1;
6684 /* Clear the delete-on-failure queue, deleting the files in it
6685 if this compilation failed. */
6687 if (this_file_error)
6689 delete_failure_queue ();
6692 /* If this compilation succeeded, don't delete those files later. */
6693 clear_failure_queue ();
6696 /* Reset the input file name to the first compile/object file name, for use
6697 with %b in LINK_SPEC. We use the first input file that we can find
6698 a compiler to compile it instead of using infiles.language since for
6699 languages other than C we use aliases that we then lookup later. */
6704 for (i = 0; i < n_infiles ; i++)
6705 if (infiles[i].language && infiles[i].language[0] != '*')
6707 set_input (infiles[i].name);
6712 if (error_count == 0)
6714 /* Make sure INPUT_FILE_NUMBER points to first available open
6716 input_file_number = n_infiles;
6717 if (lang_specific_pre_link ())
6721 /* Determine if there are any linker input files. */
6722 num_linker_inputs = 0;
6723 for (i = 0; (int) i < n_infiles; i++)
6724 if (explicit_link_files[i] || outfiles[i] != NULL)
6725 num_linker_inputs++;
6727 /* Run ld to link all the compiler output files. */
6729 if (num_linker_inputs > 0 && error_count == 0 && print_subprocess_help < 2)
6731 int tmp = execution_count;
6733 /* We'll use ld if we can't find collect2. */
6734 if (! strcmp (linker_name_spec, "collect2"))
6736 char *s = find_a_file (&exec_prefixes, "collect2", X_OK, false);
6738 linker_name_spec = "ld";
6740 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
6742 putenv_from_prefixes (&exec_prefixes, "COMPILER_PATH", false);
6743 putenv_from_prefixes (&startfile_prefixes, LIBRARY_PATH_ENV, true);
6745 if (print_subprocess_help == 1)
6747 printf (_("\nLinker options\n==============\n\n"));
6748 printf (_("Use \"-Wl,OPTION\" to pass \"OPTION\""
6749 " to the linker.\n\n"));
6752 value = do_spec (link_command_spec);
6755 linker_was_run = (tmp != execution_count);
6758 /* If options said don't run linker,
6759 complain about input files to be given to the linker. */
6761 if (! linker_was_run && error_count == 0)
6762 for (i = 0; (int) i < n_infiles; i++)
6763 if (explicit_link_files[i]
6764 && !(infiles[i].language && infiles[i].language[0] == '*'))
6765 error ("%s: linker input file unused because linking not done",
6768 /* Delete some or all of the temporary files we made. */
6771 delete_failure_queue ();
6772 delete_temp_files ();
6774 if (print_help_list)
6776 printf (("\nFor bug reporting instructions, please see:\n"));
6777 printf ("%s\n", bug_report_url);
6780 return (signal_count != 0 ? 2
6781 : error_count > 0 ? (pass_exit_codes ? greatest_status : 1)
6785 /* Find the proper compilation spec for the file name NAME,
6786 whose length is LENGTH. LANGUAGE is the specified language,
6787 or 0 if this file is to be passed to the linker. */
6789 static struct compiler *
6790 lookup_compiler (const char *name, size_t length, const char *language)
6792 struct compiler *cp;
6794 /* If this was specified by the user to be a linker input, indicate that. */
6795 if (language != 0 && language[0] == '*')
6798 /* Otherwise, look for the language, if one is spec'd. */
6801 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6802 if (cp->suffix[0] == '@' && !strcmp (cp->suffix + 1, language))
6805 error ("language %s not recognized", language);
6809 /* Look for a suffix. */
6810 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6812 if (/* The suffix `-' matches only the file name `-'. */
6813 (!strcmp (cp->suffix, "-") && !strcmp (name, "-"))
6814 || (strlen (cp->suffix) < length
6815 /* See if the suffix matches the end of NAME. */
6816 && !strcmp (cp->suffix,
6817 name + length - strlen (cp->suffix))
6822 #if defined (OS2) ||defined (HAVE_DOS_BASED_FILE_SYSTEM)
6823 /* Look again, but case-insensitively this time. */
6825 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6827 if (/* The suffix `-' matches only the file name `-'. */
6828 (!strcmp (cp->suffix, "-") && !strcmp (name, "-"))
6829 || (strlen (cp->suffix) < length
6830 /* See if the suffix matches the end of NAME. */
6831 && ((!strcmp (cp->suffix,
6832 name + length - strlen (cp->suffix))
6833 || !strpbrk (cp->suffix, "ABCDEFGHIJKLMNOPQRSTUVWXYZ"))
6834 && !strcasecmp (cp->suffix,
6835 name + length - strlen (cp->suffix)))
6841 if (cp >= compilers)
6843 if (cp->spec[0] != '@')
6844 /* A non-alias entry: return it. */
6847 /* An alias entry maps a suffix to a language.
6848 Search for the language; pass 0 for NAME and LENGTH
6849 to avoid infinite recursion if language not found. */
6850 return lookup_compiler (NULL, 0, cp->spec + 1);
6856 save_string (const char *s, int len)
6858 char *result = XNEWVEC (char, len + 1);
6860 memcpy (result, s, len);
6866 pfatal_with_name (const char *name)
6868 perror_with_name (name);
6869 delete_temp_files ();
6874 perror_with_name (const char *name)
6876 error ("%s: %s", name, xstrerror (errno));
6879 /* Output an error message and exit. */
6882 fancy_abort (const char *file, int line, const char *func)
6884 fatal_ice ("internal gcc abort in %s, at %s:%d", func, file, line);
6887 /* Output an error message and exit. */
6890 fatal_ice (const char *cmsgid, ...)
6894 va_start (ap, cmsgid);
6896 fprintf (stderr, "%s: ", programname);
6897 vfprintf (stderr, _(cmsgid), ap);
6899 fprintf (stderr, "\n");
6900 delete_temp_files ();
6901 exit (pass_exit_codes ? ICE_EXIT_CODE : 1);
6905 fatal (const char *cmsgid, ...)
6909 va_start (ap, cmsgid);
6911 fprintf (stderr, "%s: ", programname);
6912 vfprintf (stderr, _(cmsgid), ap);
6914 fprintf (stderr, "\n");
6915 delete_temp_files ();
6919 /* The argument is actually c-format, not gcc-internal-format,
6920 but because functions with identical names are used through
6921 the rest of the compiler with gcc-internal-format, we just
6922 need to hope all users of these functions use the common
6923 subset between c-format and gcc-internal-format. */
6926 error (const char *gmsgid, ...)
6930 va_start (ap, gmsgid);
6931 fprintf (stderr, "%s: ", programname);
6932 vfprintf (stderr, _(gmsgid), ap);
6935 fprintf (stderr, "\n");
6939 notice (const char *cmsgid, ...)
6943 va_start (ap, cmsgid);
6944 vfprintf (stderr, _(cmsgid), ap);
6949 validate_switches_from_spec (const char *spec)
6951 const char *p = spec;
6954 if (c == '%' && (*p == '{' || *p == '<' || (*p == 'W' && *++p == '{')))
6955 /* We have a switch spec. */
6956 p = validate_switches (p + 1);
6960 validate_all_switches (void)
6962 struct compiler *comp;
6963 struct spec_list *spec;
6965 for (comp = compilers; comp->spec; comp++)
6966 validate_switches_from_spec (comp->spec);
6968 /* Look through the linked list of specs read from the specs file. */
6969 for (spec = specs; spec; spec = spec->next)
6970 validate_switches_from_spec (*spec->ptr_spec);
6972 validate_switches_from_spec (link_command_spec);
6975 /* Look at the switch-name that comes after START
6976 and mark as valid all supplied switches that match it. */
6979 validate_switches (const char *start)
6981 const char *p = start;
6985 bool suffix = false;
6986 bool starred = false;
6988 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
6997 if (*p == '.' || *p == ',')
7001 while (ISIDNUM (*p) || *p == '-' || *p == '+' || *p == '='
7002 || *p == ',' || *p == '.' || *p == '@')
7007 starred = true, p++;
7013 /* Mark all matching switches as valid. */
7014 for (i = 0; i < n_switches; i++)
7015 if (!strncmp (switches[i].part1, atom, len)
7016 && (starred || switches[i].part1[len] == 0))
7017 switches[i].validated = 1;
7021 if (*p && (p[-1] == '|' || p[-1] == '&'))
7024 if (*p && p[-1] == ':')
7026 while (*p && *p != ';' && *p != '}')
7031 if (*p == '{' || *p == '<')
7032 p = validate_switches (p+1);
7033 else if (p[0] == 'W' && p[1] == '{')
7034 p = validate_switches (p+2);
7041 if (*p && p[-1] == ';')
7055 static struct mdswitchstr *mdswitches;
7056 static int n_mdswitches;
7058 /* Check whether a particular argument was used. The first time we
7059 canonicalize the switches to keep only the ones we care about. */
7062 used_arg (const char *p, int len)
7067 const char *replace;
7072 static struct mswitchstr *mswitches;
7073 static int n_mswitches;
7078 struct mswitchstr *matches;
7082 /* Break multilib_matches into the component strings of string
7083 and replacement string. */
7084 for (q = multilib_matches; *q != '\0'; q++)
7088 matches = alloca ((sizeof (struct mswitchstr)) * cnt);
7090 q = multilib_matches;
7099 fatal ("multilib spec '%s' is invalid", multilib_matches);
7103 matches[i].len = q - matches[i].str;
7105 matches[i].replace = ++q;
7106 while (*q != ';' && *q != '\0')
7109 goto invalid_matches;
7112 matches[i].rep_len = q - matches[i].replace;
7118 /* Now build a list of the replacement string for switches that we care
7119 about. Make sure we allocate at least one entry. This prevents
7120 xmalloc from calling fatal, and prevents us from re-executing this
7123 = XNEWVEC (struct mswitchstr, n_mdswitches + (n_switches ? n_switches : 1));
7124 for (i = 0; i < n_switches; i++)
7125 if (switches[i].live_cond != SWITCH_IGNORE)
7127 int xlen = strlen (switches[i].part1);
7128 for (j = 0; j < cnt; j++)
7129 if (xlen == matches[j].len
7130 && ! strncmp (switches[i].part1, matches[j].str, xlen))
7132 mswitches[n_mswitches].str = matches[j].replace;
7133 mswitches[n_mswitches].len = matches[j].rep_len;
7134 mswitches[n_mswitches].replace = (char *) 0;
7135 mswitches[n_mswitches].rep_len = 0;
7141 /* Add MULTILIB_DEFAULTS switches too, as long as they were not present
7142 on the command line nor any options mutually incompatible with
7144 for (i = 0; i < n_mdswitches; i++)
7148 for (q = multilib_options; *q != '\0'; q++)
7154 while (strncmp (q, mdswitches[i].str, mdswitches[i].len) != 0
7155 || strchr (" /", q[mdswitches[i].len]) == NULL)
7157 while (*q != ' ' && *q != '/' && *q != '\0')
7164 if (*q != ' ' && *q != '\0')
7166 while (*r != ' ' && *r != '\0')
7169 while (*q != ' ' && *q != '/' && *q != '\0')
7172 if (used_arg (r, q - r))
7177 mswitches[n_mswitches].str = mdswitches[i].str;
7178 mswitches[n_mswitches].len = mdswitches[i].len;
7179 mswitches[n_mswitches].replace = (char *) 0;
7180 mswitches[n_mswitches].rep_len = 0;
7193 for (i = 0; i < n_mswitches; i++)
7194 if (len == mswitches[i].len && ! strncmp (p, mswitches[i].str, len))
7201 default_arg (const char *p, int len)
7205 for (i = 0; i < n_mdswitches; i++)
7206 if (len == mdswitches[i].len && ! strncmp (p, mdswitches[i].str, len))
7212 /* Work out the subdirectory to use based on the options. The format of
7213 multilib_select is a list of elements. Each element is a subdirectory
7214 name followed by a list of options followed by a semicolon. The format
7215 of multilib_exclusions is the same, but without the preceding
7216 directory. First gcc will check the exclusions, if none of the options
7217 beginning with an exclamation point are present, and all of the other
7218 options are present, then we will ignore this completely. Passing
7219 that, gcc will consider each multilib_select in turn using the same
7220 rules for matching the options. If a match is found, that subdirectory
7224 set_multilib_dir (void)
7227 unsigned int this_path_len;
7228 const char *this_path, *this_arg;
7229 const char *start, *end;
7231 int ok, ndfltok, first;
7234 start = multilib_defaults;
7235 while (*start == ' ' || *start == '\t')
7237 while (*start != '\0')
7240 while (*start != ' ' && *start != '\t' && *start != '\0')
7242 while (*start == ' ' || *start == '\t')
7250 mdswitches = XNEWVEC (struct mdswitchstr, n_mdswitches);
7251 for (start = multilib_defaults; *start != '\0'; start = end + 1)
7253 while (*start == ' ' || *start == '\t')
7259 for (end = start + 1;
7260 *end != ' ' && *end != '\t' && *end != '\0'; end++)
7263 obstack_grow (&multilib_obstack, start, end - start);
7264 obstack_1grow (&multilib_obstack, 0);
7265 mdswitches[i].str = XOBFINISH (&multilib_obstack, const char *);
7266 mdswitches[i++].len = end - start;
7273 p = multilib_exclusions;
7276 /* Ignore newlines. */
7283 /* Check the arguments. */
7290 fatal ("multilib exclusions '%s' is invalid",
7291 multilib_exclusions);
7301 while (*p != ' ' && *p != ';')
7304 goto invalid_exclusions;
7308 if (*this_arg != '!')
7316 ok = used_arg (this_arg, p - this_arg);
7331 p = multilib_select;
7334 /* Ignore newlines. */
7341 /* Get the initial path. */
7348 fatal ("multilib select '%s' is invalid",
7353 this_path_len = p - this_path;
7355 /* Check the arguments. */
7362 goto invalid_select;
7371 while (*p != ' ' && *p != ';')
7374 goto invalid_select;
7378 if (*this_arg != '!')
7386 /* If this is a default argument, we can just ignore it.
7387 This is true even if this_arg begins with '!'. Beginning
7388 with '!' does not mean that this argument is necessarily
7389 inappropriate for this library: it merely means that
7390 there is a more specific library which uses this
7391 argument. If this argument is a default, we need not
7392 consider that more specific library. */
7393 ok = used_arg (this_arg, p - this_arg);
7400 if (default_arg (this_arg, p - this_arg))
7409 if (this_path_len != 1
7410 || this_path[0] != '.')
7412 char *new_multilib_dir = XNEWVEC (char, this_path_len + 1);
7415 strncpy (new_multilib_dir, this_path, this_path_len);
7416 new_multilib_dir[this_path_len] = '\0';
7417 q = strchr (new_multilib_dir, ':');
7420 multilib_dir = new_multilib_dir;
7427 const char *q = this_path, *end = this_path + this_path_len;
7429 while (q < end && *q != ':')
7433 char *new_multilib_os_dir = XNEWVEC (char, end - q);
7434 memcpy (new_multilib_os_dir, q + 1, end - q - 1);
7435 new_multilib_os_dir[end - q - 1] = '\0';
7436 multilib_os_dir = new_multilib_os_dir;
7444 if (multilib_dir == NULL && multilib_os_dir != NULL
7445 && strcmp (multilib_os_dir, ".") == 0)
7447 free (CONST_CAST (multilib_os_dir));
7448 multilib_os_dir = NULL;
7450 else if (multilib_dir != NULL && multilib_os_dir == NULL)
7451 multilib_os_dir = multilib_dir;
7454 /* Print out the multiple library subdirectory selection
7455 information. This prints out a series of lines. Each line looks
7456 like SUBDIRECTORY;@OPTION@OPTION, with as many options as is
7457 required. Only the desired options are printed out, the negative
7458 matches. The options are print without a leading dash. There are
7459 no spaces to make it easy to use the information in the shell.
7460 Each subdirectory is printed only once. This assumes the ordering
7461 generated by the genmultilib script. Also, we leave out ones that match
7465 print_multilib_info (void)
7467 const char *p = multilib_select;
7468 const char *last_path = 0, *this_path;
7470 unsigned int last_path_len = 0;
7475 /* Ignore newlines. */
7482 /* Get the initial path. */
7489 fatal ("multilib select '%s' is invalid", multilib_select);
7495 /* When --disable-multilib was used but target defines
7496 MULTILIB_OSDIRNAMES, entries starting with .: are there just
7497 to find multilib_os_dir, so skip them from output. */
7498 if (this_path[0] == '.' && this_path[1] == ':')
7501 /* Check for matches with the multilib_exclusions. We don't bother
7502 with the '!' in either list. If any of the exclusion rules match
7503 all of its options with the select rule, we skip it. */
7505 const char *e = multilib_exclusions;
7506 const char *this_arg;
7511 /* Ignore newlines. */
7518 /* Check the arguments. */
7527 fatal ("multilib exclusion '%s' is invalid",
7528 multilib_exclusions);
7539 while (*e != ' ' && *e != ';')
7542 goto invalid_exclusion;
7550 int len = e - this_arg;
7553 goto invalid_select;
7557 while (*q != ' ' && *q != ';')
7560 goto invalid_select;
7564 if (! strncmp (arg, this_arg,
7565 (len < q - arg) ? q - arg : len)
7566 || default_arg (this_arg, e - this_arg))
7596 /* If this is a duplicate, skip it. */
7597 skip = (last_path != 0
7598 && (unsigned int) (p - this_path) == last_path_len
7599 && ! strncmp (last_path, this_path, last_path_len));
7601 last_path = this_path;
7602 last_path_len = p - this_path;
7605 /* If this directory requires any default arguments, we can skip
7606 it. We will already have printed a directory identical to
7607 this one which does not require that default argument. */
7618 goto invalid_select;
7625 while (*q != ' ' && *q != ';')
7628 goto invalid_select;
7633 && default_arg (arg, q - arg))
7648 for (p1 = last_path; p1 < p && *p1 != ':'; p1++)
7659 goto invalid_select;
7667 use_arg = *p != '!';
7672 while (*p != ' ' && *p != ';')
7675 goto invalid_select;
7687 /* If there are extra options, print them now. */
7688 if (multilib_extra && *multilib_extra)
7690 int print_at = TRUE;
7693 for (q = multilib_extra; *q != '\0'; q++)
7714 /* getenv built-in spec function.
7716 Returns the value of the environment variable given by its first
7717 argument, concatenated with the second argument. If the
7718 environment variable is not defined, a fatal error is issued. */
7721 getenv_spec_function (int argc, const char **argv)
7728 value = getenv (argv[0]);
7730 fatal ("environment variable \"%s\" not defined", argv[0]);
7732 return concat (value, argv[1], NULL);
7735 /* if-exists built-in spec function.
7737 Checks to see if the file specified by the absolute pathname in
7738 ARGS exists. Returns that pathname if found.
7740 The usual use for this function is to check for a library file
7741 (whose name has been expanded with %s). */
7744 if_exists_spec_function (int argc, const char **argv)
7746 /* Must have only one argument. */
7747 if (argc == 1 && IS_ABSOLUTE_PATH (argv[0]) && ! access (argv[0], R_OK))
7753 /* if-exists-else built-in spec function.
7755 This is like if-exists, but takes an additional argument which
7756 is returned if the first argument does not exist. */
7759 if_exists_else_spec_function (int argc, const char **argv)
7761 /* Must have exactly two arguments. */
7765 if (IS_ABSOLUTE_PATH (argv[0]) && ! access (argv[0], R_OK))
7771 /* replace-outfile built-in spec function.
7773 This looks for the first argument in the outfiles array's name and
7774 replaces it with the second argument. */
7777 replace_outfile_spec_function (int argc, const char **argv)
7780 /* Must have exactly two arguments. */
7784 for (i = 0; i < n_infiles; i++)
7786 if (outfiles[i] && !strcmp (outfiles[i], argv[0]))
7787 outfiles[i] = xstrdup (argv[1]);
7792 /* Given two version numbers, compares the two numbers.
7793 A version number must match the regular expression
7794 ([1-9][0-9]*|0)(\.([1-9][0-9]*|0))*
7797 compare_version_strings (const char *v1, const char *v2)
7802 if (regcomp (&r, "^([1-9][0-9]*|0)(\\.([1-9][0-9]*|0))*$",
7803 REG_EXTENDED | REG_NOSUB) != 0)
7805 rresult = regexec (&r, v1, 0, NULL, 0);
7806 if (rresult == REG_NOMATCH)
7807 fatal ("invalid version number `%s'", v1);
7808 else if (rresult != 0)
7810 rresult = regexec (&r, v2, 0, NULL, 0);
7811 if (rresult == REG_NOMATCH)
7812 fatal ("invalid version number `%s'", v2);
7813 else if (rresult != 0)
7816 return strverscmp (v1, v2);
7820 /* version_compare built-in spec function.
7822 This takes an argument of the following form:
7824 <comparison-op> <arg1> [<arg2>] <switch> <result>
7826 and produces "result" if the comparison evaluates to true,
7827 and nothing if it doesn't.
7829 The supported <comparison-op> values are:
7831 >= true if switch is a later (or same) version than arg1
7833 < true if switch is an earlier version than arg1
7835 >< true if switch is arg1 or later, and earlier than arg2
7836 <> true if switch is earlier than arg1 or is arg2 or later
7838 If the switch is not present, the condition is false unless
7839 the first character of the <comparison-op> is '!'.
7842 %:version-compare(>= 10.3 mmacosx-version-min= -lmx)
7843 adds -lmx if -mmacosx-version-min=10.3.9 was passed. */
7846 version_compare_spec_function (int argc, const char **argv)
7850 const char *switch_value = NULL;
7855 fatal ("too few arguments to %%:version-compare");
7856 if (argv[0][0] == '\0')
7858 if ((argv[0][1] == '<' || argv[0][1] == '>') && argv[0][0] != '!')
7860 if (argc != nargs + 3)
7861 fatal ("too many arguments to %%:version-compare");
7863 switch_len = strlen (argv[nargs + 1]);
7864 for (i = 0; i < n_switches; i++)
7865 if (!strncmp (switches[i].part1, argv[nargs + 1], switch_len)
7866 && check_live_switch (i, switch_len))
7867 switch_value = switches[i].part1 + switch_len;
7869 if (switch_value == NULL)
7873 comp1 = compare_version_strings (switch_value, argv[1]);
7875 comp2 = compare_version_strings (switch_value, argv[2]);
7877 comp2 = -1; /* This value unused. */
7880 switch (argv[0][0] << 8 | argv[0][1])
7882 case '>' << 8 | '=':
7883 result = comp1 >= 0;
7885 case '!' << 8 | '<':
7886 result = comp1 >= 0 || switch_value == NULL;
7891 case '!' << 8 | '>':
7892 result = comp1 < 0 || switch_value == NULL;
7894 case '>' << 8 | '<':
7895 result = comp1 >= 0 && comp2 < 0;
7897 case '<' << 8 | '>':
7898 result = comp1 < 0 || comp2 >= 0;
7902 fatal ("unknown operator '%s' in %%:version-compare", argv[0]);
7907 return argv[nargs + 2];
7910 /* %:include builtin spec function. This differs from %include in that it
7911 can be nested inside a spec, and thus be conditionalized. It takes
7912 one argument, the filename, and looks for it in the startfile path.
7913 The result is always NULL, i.e. an empty expansion. */
7916 include_spec_function (int argc, const char **argv)
7923 file = find_a_file (&startfile_prefixes, argv[0], R_OK, 0);
7924 read_specs (file ? file : argv[0], FALSE);
7929 /* %:print-asm-header spec function. Print a banner to say that the
7930 following output is from the assembler. */
7933 print_asm_header_spec_function (int arg ATTRIBUTE_UNUSED,
7934 const char **argv ATTRIBUTE_UNUSED)
7936 printf (_("Assembler options\n=================\n\n"));
7937 printf (_("Use \"-Wa,OPTION\" to pass \"OPTION\" to the assembler.\n\n"));