1 /* Compiler driver program that can handle many languages.
2 Copyright (C) 1987, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
3 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
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 program is the user interface to the C compiler and possibly to
23 other compilers. It is used because compilation is a complicated procedure
24 which involves running several programs and passing temporary files between
25 them, forwarding the users switches to those programs selectively,
26 and deleting the temporary files at the end.
28 CC recognizes how to compile each input file by suffixes in the file names.
29 Once it knows which kind of compilation to perform, the procedure for
30 compilation is specified by a string called a "spec". */
32 /* A Short Introduction to Adding a Command-Line Option.
34 Before adding a command-line option, consider if it is really
35 necessary. Each additional command-line option adds complexity and
36 is difficult to remove in subsequent versions.
38 In the following, consider adding the command-line argument
41 1. Each command-line option is specified in the specs file. The
42 notation is described below in the comment entitled "The Specs
45 2. In this file, add an entry to "option_map" equating the long
46 `--' argument version and any shorter, single letter version. Read
47 the comments in the declaration of "struct option_map" for an
48 explanation. Do not omit the first `-'.
50 3. Look in the "specs" file to determine which program or option
51 list should be given the argument, e.g., "cc1_options". Add the
52 appropriate syntax for the shorter option version to the
53 corresponding "const char *" entry in this file. Omit the first
54 `-' from the option. For example, use `-bar', rather than `--bar'.
56 4. If the argument takes an argument, e.g., `--baz argument1',
57 modify either DEFAULT_SWITCH_TAKES_ARG or
58 DEFAULT_WORD_SWITCH_TAKES_ARG in gcc.h. Omit the first `-'
61 5. Document the option in this file's display_help(). If the
62 option is passed to a subprogram, modify its corresponding
63 function, e.g., cppinit.c:print_help() or toplev.c:display_help(),
66 6. Compile and test. Make sure that your new specs file is being
67 read. For example, use a debugger to investigate the value of
68 "specs_file" in main(). */
72 #include "coretypes.h"
73 #include "multilib.h" /* before tm.h */
76 #if ! defined( SIGCHLD ) && defined( SIGCLD )
77 # define SIGCHLD SIGCLD
87 /* By default there is no special suffix for target executables. */
88 /* FIXME: when autoconf is fixed, remove the host check - dj */
89 #if defined(TARGET_EXECUTABLE_SUFFIX) && defined(HOST_EXECUTABLE_SUFFIX)
90 #define HAVE_TARGET_EXECUTABLE_SUFFIX
93 /* By default there is no special suffix for host executables. */
94 #ifdef HOST_EXECUTABLE_SUFFIX
95 #define HAVE_HOST_EXECUTABLE_SUFFIX
97 #define HOST_EXECUTABLE_SUFFIX ""
100 /* By default, the suffix for target object files is ".o". */
101 #ifdef TARGET_OBJECT_SUFFIX
102 #define HAVE_TARGET_OBJECT_SUFFIX
104 #define TARGET_OBJECT_SUFFIX ".o"
107 static const char dir_separator_str[] = { DIR_SEPARATOR, 0 };
109 /* Most every one is fine with LIBRARY_PATH. For some, it conflicts. */
110 #ifndef LIBRARY_PATH_ENV
111 #define LIBRARY_PATH_ENV "LIBRARY_PATH"
115 #define kill(p,s) raise(s)
118 /* If a stage of compilation returns an exit status >= 1,
119 compilation of that file ceases. */
121 #define MIN_FATAL_STATUS 1
123 /* Flag set by cppspec.c to 1. */
126 /* Flag set to nonzero if an @file argument has been supplied to gcc. */
127 static bool at_file_supplied;
129 /* Flag saying to pass the greatest exit code returned by a sub-process
130 to the calling program. */
131 static int pass_exit_codes;
133 /* Definition of string containing the arguments given to configure. */
134 #include "configargs.h"
136 /* Flag saying to print the directories gcc will search through looking for
137 programs, libraries, etc. */
139 static int print_search_dirs;
141 /* Flag saying to print the full filename of this file
142 as found through our usual search mechanism. */
144 static const char *print_file_name = NULL;
146 /* As print_file_name, but search for executable file. */
148 static const char *print_prog_name = NULL;
150 /* Flag saying to print the relative path we'd use to
151 find libgcc.a given the current compiler flags. */
153 static int print_multi_directory;
155 static int print_sysroot;
157 /* Flag saying to print the relative path we'd use to
158 find OS libraries given the current compiler flags. */
160 static int print_multi_os_directory;
162 /* Flag saying to print the list of subdirectories and
163 compiler flags used to select them in a standard form. */
165 static int print_multi_lib;
167 /* Flag saying to print the command line options understood by gcc and its
170 static int print_help_list;
172 /* Flag saying to print the version of gcc and its sub-processes. */
174 static int print_version;
176 /* Flag saying to print the sysroot suffix used for searching for
179 static int print_sysroot_headers_suffix;
181 /* Flag indicating whether we should print the command and arguments */
183 static int verbose_flag;
185 /* Flag indicating whether we should ONLY print the command and
186 arguments (like verbose_flag) without executing the command.
187 Displayed arguments are quoted so that the generated command
188 line is suitable for execution. This is intended for use in
189 shell scripts to capture the driver-generated command line. */
190 static int verbose_only_flag;
192 /* Flag indicating how to print command line options of sub-processes. */
194 static int print_subprocess_help;
196 /* Flag indicating whether we should report subprocess execution times
197 (if this is supported by the system - see pexecute.c). */
199 static int report_times;
201 /* Nonzero means place this string before uses of /, so that include
202 and library files can be found in an alternate location. */
204 #ifdef TARGET_SYSTEM_ROOT
205 static const char *target_system_root = TARGET_SYSTEM_ROOT;
207 static const char *target_system_root = 0;
210 /* Nonzero means pass the updated target_system_root to the compiler. */
212 static int target_system_root_changed;
214 /* Nonzero means append this string to target_system_root. */
216 static const char *target_sysroot_suffix = 0;
218 /* Nonzero means append this string to target_system_root for headers. */
220 static const char *target_sysroot_hdrs_suffix = 0;
222 /* Nonzero means write "temp" files in source directory
223 and use the source file's name in them, and don't delete them. */
225 static enum save_temps {
226 SAVE_TEMPS_NONE, /* no -save-temps */
227 SAVE_TEMPS_CWD, /* -save-temps in current directory */
228 SAVE_TEMPS_OBJ /* -save-temps in object directory */
231 /* Output file to use to get the object directory for -save-temps=obj */
232 static char *save_temps_prefix = 0;
233 static size_t save_temps_length = 0;
235 /* Nonzero means pass multiple source files to the compiler at one time. */
237 static int combine_flag = 0;
239 /* Nonzero means use pipes to communicate between subprocesses.
240 Overridden by either of the above two flags. */
242 static int use_pipes;
244 /* The compiler version. */
246 static const char *compiler_version;
248 /* The target version specified with -V */
250 static const char *const spec_version = DEFAULT_TARGET_VERSION;
252 /* The target machine specified with -b. */
254 static const char *spec_machine = DEFAULT_TARGET_MACHINE;
256 /* Nonzero if cross-compiling.
257 When -b is used, the value comes from the `specs' file. */
259 #ifdef CROSS_DIRECTORY_STRUCTURE
260 static const char *cross_compile = "1";
262 static const char *cross_compile = "0";
265 #ifdef MODIFY_TARGET_NAME
267 /* Information on how to alter the target name based on a command-line
268 switch. The only case we support now is simply appending or deleting a
269 string to or from the end of the first part of the configuration name. */
271 static const struct modify_target
273 const char *const sw;
274 const enum add_del {ADD, DELETE} add_del;
275 const char *const str;
277 modify_target[] = MODIFY_TARGET_NAME;
280 /* The number of errors that have occurred; the link phase will not be
281 run if this is nonzero. */
282 static int error_count = 0;
284 /* Greatest exit code of sub-processes that has been encountered up to
286 static int greatest_status = 1;
288 /* This is the obstack which we use to allocate many strings. */
290 static struct obstack obstack;
292 /* This is the obstack to build an environment variable to pass to
293 collect2 that describes all of the relevant switches of what to
294 pass the compiler in building the list of pointers to constructors
297 static struct obstack collect_obstack;
299 /* This is a list of a wrapper program and its arguments.
300 e.g. wrapper_string of "strace,-c"
301 will cause all programs to run as
302 strace -c program arguments
305 static const char *wrapper_string;
307 /* Forward declaration for prototypes. */
311 static void init_spec (void);
312 static void store_arg (const char *, int, int);
313 static void insert_wrapper (const char *);
314 static char *load_specs (const char *);
315 static void read_specs (const char *, int);
316 static void set_spec (const char *, const char *);
317 static struct compiler *lookup_compiler (const char *, size_t, const char *);
318 static char *build_search_list (const struct path_prefix *, const char *,
320 static void xputenv (const char *);
321 static void putenv_from_prefixes (const struct path_prefix *, const char *,
323 static int access_check (const char *, int);
324 static char *find_a_file (const struct path_prefix *, const char *, int, bool);
325 static void add_prefix (struct path_prefix *, const char *, const char *,
327 static void add_sysrooted_prefix (struct path_prefix *, const char *,
328 const char *, int, int, int);
329 static void translate_options (int *, const char *const **);
330 static char *skip_whitespace (char *);
331 static void delete_if_ordinary (const char *);
332 static void delete_temp_files (void);
333 static void delete_failure_queue (void);
334 static void clear_failure_queue (void);
335 static int check_live_switch (int, int);
336 static const char *handle_braces (const char *);
337 static inline bool input_suffix_matches (const char *, const char *);
338 static inline bool switch_matches (const char *, const char *, int);
339 static inline void mark_matching_switches (const char *, const char *, int);
340 static inline void process_marked_switches (void);
341 static const char *process_brace_body (const char *, const char *, const char *, int, int);
342 static const struct spec_function *lookup_spec_function (const char *);
343 static const char *eval_spec_function (const char *, const char *);
344 static const char *handle_spec_function (const char *);
345 static char *save_string (const char *, int);
346 static void set_collect_gcc_options (void);
347 static int do_spec_1 (const char *, int, const char *);
348 static int do_spec_2 (const char *);
349 static void do_option_spec (const char *, const char *);
350 static void do_self_spec (const char *);
351 static const char *find_file (const char *);
352 static int is_directory (const char *, bool);
353 static const char *validate_switches (const char *);
354 static void validate_all_switches (void);
355 static inline void validate_switches_from_spec (const char *);
356 static void give_switch (int, int);
357 static int used_arg (const char *, int);
358 static int default_arg (const char *, int);
359 static void set_multilib_dir (void);
360 static void print_multilib_info (void);
361 static void perror_with_name (const char *);
362 static void fatal_ice (const char *, ...) ATTRIBUTE_PRINTF_1 ATTRIBUTE_NORETURN;
363 static void notice (const char *, ...) ATTRIBUTE_PRINTF_1;
364 static void display_help (void);
365 static void add_preprocessor_option (const char *, int);
366 static void add_assembler_option (const char *, int);
367 static void add_linker_option (const char *, int);
368 static void process_command (int, const char **);
369 static int execute (void);
370 static void alloc_args (void);
371 static void clear_args (void);
372 static void fatal_error (int);
373 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
374 static void init_gcc_specs (struct obstack *, const char *, const char *,
377 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
378 static const char *convert_filename (const char *, int, int);
381 static const char *getenv_spec_function (int, const char **);
382 static const char *if_exists_spec_function (int, const char **);
383 static const char *if_exists_else_spec_function (int, const char **);
384 static const char *replace_outfile_spec_function (int, const char **);
385 static const char *version_compare_spec_function (int, const char **);
386 static const char *include_spec_function (int, const char **);
387 static const char *print_asm_header_spec_function (int, const char **);
389 /* The Specs Language
391 Specs are strings containing lines, each of which (if not blank)
392 is made up of a program name, and arguments separated by spaces.
393 The program name must be exact and start from root, since no path
394 is searched and it is unreliable to depend on the current working directory.
395 Redirection of input or output is not supported; the subprograms must
396 accept filenames saying what files to read and write.
398 In addition, the specs can contain %-sequences to substitute variable text
399 or for conditional text. Here is a table of all defined %-sequences.
400 Note that spaces are not generated automatically around the results of
401 expanding these sequences; therefore, you can concatenate them together
402 or with constant text in a single argument.
404 %% substitute one % into the program name or argument.
405 %i substitute the name of the input file being processed.
406 %b substitute the basename of the input file being processed.
407 This is the substring up to (and not including) the last period
408 and not including the directory unless -save-temps was specified
409 to put temporaries in a different location.
410 %B same as %b, but include the file suffix (text after the last period).
412 substitute a file name that has suffix SUFFIX and is chosen
413 once per compilation, and mark the argument a la %d. To reduce
414 exposure to denial-of-service attacks, the file name is now
415 chosen in a way that is hard to predict even when previously
416 chosen file names are known. For example, `%g.s ... %g.o ... %g.s'
417 might turn into `ccUVUUAU.s ccXYAXZ12.o ccUVUUAU.s'. SUFFIX matches
418 the regexp "[.0-9A-Za-z]*%O"; "%O" is treated exactly as if it
419 had been pre-processed. Previously, %g was simply substituted
420 with a file name chosen once per compilation, without regard
421 to any appended suffix (which was therefore treated just like
422 ordinary text), making such attacks more likely to succeed.
424 like %g, but if -pipe is in effect, expands simply to "-".
426 like %g, but if -pipe is in effect, expands to nothing. (We have both
427 %| and %m to accommodate differences between system assemblers; see
428 the AS_NEEDS_DASH_FOR_PIPED_INPUT target macro.)
430 like %g, but generates a new temporary file name even if %uSUFFIX
433 substitutes the last file name generated with %uSUFFIX, generating a
434 new one if there is no such last file name. In the absence of any
435 %uSUFFIX, this is just like %gSUFFIX, except they don't share
436 the same suffix "space", so `%g.s ... %U.s ... %g.s ... %U.s'
437 would involve the generation of two distinct file names, one
438 for each `%g.s' and another for each `%U.s'. Previously, %U was
439 simply substituted with a file name chosen for the previous %u,
440 without regard to any appended suffix.
442 substitutes the name of the HOST_BIT_BUCKET, if any, and if it is
443 writable, and if save-temps is off; otherwise, substitute the name
444 of a temporary file, just like %u. This temporary file is not
445 meant for communication between processes, but rather as a junk
448 substitutes .SUFFIX for the suffixes of a matched switch's args when
449 it is subsequently output with %*. SUFFIX is terminated by the next
451 %d marks the argument containing or following the %d as a
452 temporary file name, so that that file will be deleted if GCC exits
453 successfully. Unlike %g, this contributes no text to the argument.
454 %w marks the argument containing or following the %w as the
455 "output file" of this compilation. This puts the argument
456 into the sequence of arguments that %o will substitute later.
457 %V indicates that this compilation produces no "output file".
459 like %{...} but mark last argument supplied within
460 as a file to be deleted on failure.
461 %o substitutes the names of all the output files, with spaces
462 automatically placed around them. You should write spaces
463 around the %o as well or the results are undefined.
464 %o is for use in the specs for running the linker.
465 Input files whose names have no recognized suffix are not compiled
466 at all, but they are included among the output files, so they will
468 %O substitutes the suffix for object files. Note that this is
469 handled specially when it immediately follows %g, %u, or %U
470 (with or without a suffix argument) because of the need for
471 those to form complete file names. The handling is such that
472 %O is treated exactly as if it had already been substituted,
473 except that %g, %u, and %U do not currently support additional
474 SUFFIX characters following %O as they would following, for
476 %I Substitute any of -iprefix (made from GCC_EXEC_PREFIX), -isysroot
477 (made from TARGET_SYSTEM_ROOT), -isystem (made from COMPILER_PATH
478 and -B options) and -imultilib as necessary.
479 %s current argument is the name of a library or startup file of some sort.
480 Search for that file in a standard list of directories
481 and substitute the full name found.
482 %eSTR Print STR as an error message. STR is terminated by a newline.
483 Use this when inconsistent options are detected.
484 %nSTR Print STR as a notice. STR is terminated by a newline.
485 %x{OPTION} Accumulate an option for %X.
486 %X Output the accumulated linker options specified by compilations.
487 %Y Output the accumulated assembler options specified by compilations.
488 %Z Output the accumulated preprocessor options specified by compilations.
489 %a process ASM_SPEC as a spec.
490 This allows config.h to specify part of the spec for running as.
491 %A process ASM_FINAL_SPEC as a spec. A capital A is actually
492 used here. This can be used to run a post-processor after the
493 assembler has done its job.
494 %D Dump out a -L option for each directory in startfile_prefixes.
495 If multilib_dir is set, extra entries are generated with it affixed.
496 %l process LINK_SPEC as a spec.
497 %L process LIB_SPEC as a spec.
498 %G process LIBGCC_SPEC as a spec.
499 %R Output the concatenation of target_system_root and
500 target_sysroot_suffix.
501 %S process STARTFILE_SPEC as a spec. A capital S is actually used here.
502 %E process ENDFILE_SPEC as a spec. A capital E is actually used here.
503 %C process CPP_SPEC as a spec.
504 %1 process CC1_SPEC as a spec.
505 %2 process CC1PLUS_SPEC as a spec.
506 %* substitute the variable part of a matched option. (See below.)
507 Note that each comma in the substituted string is replaced by
509 %<S remove all occurrences of -S from the command line.
510 Note - this command is position dependent. % commands in the
511 spec string before this one will see -S, % commands in the
512 spec string after this one will not.
513 %<S* remove all occurrences of all switches beginning with -S from the
516 Call the named function FUNCTION, passing it ARGS. ARGS is
517 first processed as a nested spec string, then split into an
518 argument vector in the usual fashion. The function returns
519 a string which is processed as if it had appeared literally
520 as part of the current spec.
521 %{S} substitutes the -S switch, if that switch was given to GCC.
522 If that switch was not specified, this substitutes nothing.
523 Here S is a metasyntactic variable.
524 %{S*} substitutes all the switches specified to GCC whose names start
525 with -S. This is used for -o, -I, etc; switches that take
526 arguments. GCC considers `-o foo' as being one switch whose
527 name starts with `o'. %{o*} would substitute this text,
528 including the space; thus, two arguments would be generated.
529 %{S*&T*} likewise, but preserve order of S and T options (the order
530 of S and T in the spec is not significant). Can be any number
531 of ampersand-separated variables; for each the wild card is
532 optional. Useful for CPP as %{D*&U*&A*}.
534 %{S:X} substitutes X, if the -S switch was given to GCC.
535 %{!S:X} substitutes X, if the -S switch was NOT given to GCC.
536 %{S*:X} substitutes X if one or more switches whose names start
537 with -S was given to GCC. Normally X is substituted only
538 once, no matter how many such switches appeared. However,
539 if %* appears somewhere in X, then X will be substituted
540 once for each matching switch, with the %* replaced by the
541 part of that switch that matched the '*'.
542 %{.S:X} substitutes X, if processing a file with suffix S.
543 %{!.S:X} substitutes X, if NOT processing a file with suffix S.
544 %{,S:X} substitutes X, if processing a file which will use spec S.
545 %{!,S:X} substitutes X, if NOT processing a file which will use spec S.
547 %{S|T:X} substitutes X if either -S or -T was given to GCC. This may be
548 combined with '!', '.', ',', and '*' as above binding stronger
550 If %* appears in X, all of the alternatives must be starred, and
551 only the first matching alternative is substituted.
552 %{S:X; if S was given to GCC, substitutes X;
553 T:Y; else if T was given to GCC, substitutes Y;
554 :D} else substitutes D. There can be as many clauses as you need.
555 This may be combined with '.', '!', ',', '|', and '*' as above.
557 %(Spec) processes a specification defined in a specs file as *Spec:
558 %[Spec] as above, but put __ around -D arguments
560 The conditional text X in a %{S:X} or similar construct may contain
561 other nested % constructs or spaces, or even newlines. They are
562 processed as usual, as described above. Trailing white space in X is
563 ignored. White space may also appear anywhere on the left side of the
564 colon in these constructs, except between . or * and the corresponding
567 The -O, -f, -m, and -W switches are handled specifically in these
568 constructs. If another value of -O or the negated form of a -f, -m, or
569 -W switch is found later in the command line, the earlier switch
570 value is ignored, except with {S*} where S is just one letter; this
571 passes all matching options.
573 The character | at the beginning of the predicate text is used to indicate
574 that a command should be piped to the following command, but only if -pipe
577 Note that it is built into GCC which switches take arguments and which
578 do not. You might think it would be useful to generalize this to
579 allow each compiler's spec to say which switches take arguments. But
580 this cannot be done in a consistent fashion. GCC cannot even decide
581 which input files have been specified without knowing which switches
582 take arguments, and it must know which input files to compile in order
583 to tell which compilers to run.
585 GCC also knows implicitly that arguments starting in `-l' are to be
586 treated as compiler output files, and passed to the linker in their
587 proper position among the other output files. */
589 /* Define the macros used for specs %a, %l, %L, %S, %C, %1. */
591 /* config.h can define ASM_SPEC to provide extra args to the assembler
592 or extra switch-translations. */
597 /* config.h can define ASM_FINAL_SPEC to run a post processor after
598 the assembler has run. */
599 #ifndef ASM_FINAL_SPEC
600 #define ASM_FINAL_SPEC ""
603 /* config.h can define CPP_SPEC to provide extra args to the C preprocessor
604 or extra switch-translations. */
609 /* config.h can define CC1_SPEC to provide extra args to cc1 and cc1plus
610 or extra switch-translations. */
615 /* config.h can define CC1PLUS_SPEC to provide extra args to cc1plus
616 or extra switch-translations. */
618 #define CC1PLUS_SPEC ""
621 /* config.h can define LINK_SPEC to provide extra args to the linker
622 or extra switch-translations. */
627 /* config.h can define LIB_SPEC to override the default libraries. */
629 #define LIB_SPEC "%{!shared:%{g*:-lg} %{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p}}"
634 /* XXX: valid only for GNU ld */
635 /* XXX: should exactly match hooks provided by libmudflap.a */
636 #define MFWRAP_SPEC " %{static: %{fmudflap|fmudflapth: \
637 --wrap=malloc --wrap=free --wrap=calloc --wrap=realloc\
638 --wrap=mmap --wrap=munmap --wrap=alloca\
639 } %{fmudflapth: --wrap=pthread_create\
640 }} %{fmudflap|fmudflapth: --wrap=main}"
643 #define MFLIB_SPEC "%{fmudflap|fmudflapth: -export-dynamic}"
646 /* config.h can define LIBGCC_SPEC to override how and when libgcc.a is
649 #if defined(REAL_LIBGCC_SPEC)
650 #define LIBGCC_SPEC REAL_LIBGCC_SPEC
651 #elif defined(LINK_LIBGCC_SPECIAL_1)
652 /* Have gcc do the search for libgcc.a. */
653 #define LIBGCC_SPEC "libgcc.a%s"
655 #define LIBGCC_SPEC "-lgcc"
659 /* config.h can define STARTFILE_SPEC to override the default crt0 files. */
660 #ifndef STARTFILE_SPEC
661 #define STARTFILE_SPEC \
662 "%{!shared:%{pg:gcrt0%O%s}%{!pg:%{p:mcrt0%O%s}%{!p:crt0%O%s}}}"
665 /* config.h can define SWITCHES_NEED_SPACES to control which options
666 require spaces between the option and the argument. */
667 #ifndef SWITCHES_NEED_SPACES
668 #define SWITCHES_NEED_SPACES ""
671 /* config.h can define ENDFILE_SPEC to override the default crtn files. */
673 #define ENDFILE_SPEC ""
677 #define LINKER_NAME "collect2"
680 #ifdef HAVE_AS_DEBUG_PREFIX_MAP
681 #define ASM_MAP " %{fdebug-prefix-map=*:--debug-prefix-map %*}"
686 /* Define ASM_DEBUG_SPEC to be a spec suitable for translating '-g'
688 #ifndef ASM_DEBUG_SPEC
689 # if defined(DBX_DEBUGGING_INFO) && defined(DWARF2_DEBUGGING_INFO) \
690 && defined(HAVE_AS_GDWARF2_DEBUG_FLAG) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
691 # define ASM_DEBUG_SPEC \
692 (PREFERRED_DEBUGGING_TYPE == DBX_DEBUG \
693 ? "%{!g0:%{gdwarf-2*:--gdwarf2}%{!gdwarf-2*:%{g*:--gstabs}}}" ASM_MAP \
694 : "%{!g0:%{gstabs*:--gstabs}%{!gstabs*:%{g*:--gdwarf2}}}" ASM_MAP)
696 # if defined(DBX_DEBUGGING_INFO) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
697 # define ASM_DEBUG_SPEC "%{g*:%{!g0:--gstabs}}" ASM_MAP
699 # if defined(DWARF2_DEBUGGING_INFO) && defined(HAVE_AS_GDWARF2_DEBUG_FLAG)
700 # define ASM_DEBUG_SPEC "%{g*:%{!g0:--gdwarf2}}" ASM_MAP
704 #ifndef ASM_DEBUG_SPEC
705 # define ASM_DEBUG_SPEC ""
708 /* Here is the spec for running the linker, after compiling all files. */
710 /* This is overridable by the target in case they need to specify the
711 -lgcc and -lc order specially, yet not require them to override all
712 of LINK_COMMAND_SPEC. */
713 #ifndef LINK_GCC_C_SEQUENCE_SPEC
714 #define LINK_GCC_C_SEQUENCE_SPEC "%G %L %G"
717 #ifndef LINK_SSP_SPEC
718 #ifdef TARGET_LIBC_PROVIDES_SSP
719 #define LINK_SSP_SPEC "%{fstack-protector:}"
721 #define LINK_SSP_SPEC "%{fstack-protector|fstack-protector-all:-lssp_nonshared -lssp}"
725 #ifndef LINK_PIE_SPEC
727 #define LINK_PIE_SPEC "%{pie:-pie} "
729 #define LINK_PIE_SPEC "%{pie:} "
733 /* -u* was put back because both BSD and SysV seem to support it. */
734 /* %{static:} simply prevents an error message if the target machine
735 doesn't handle -static. */
736 /* We want %{T*} after %{L*} and %D so that it can be used to specify linker
737 scripts which exist in user specified directories, or in standard
739 #ifndef LINK_COMMAND_SPEC
740 #define LINK_COMMAND_SPEC "\
741 %{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:\
742 %(linker) %l " LINK_PIE_SPEC "%X %{o*} %{A} %{d} %{e*} %{m} %{N} %{n} %{r}\
743 %{s} %{t} %{u*} %{x} %{z} %{Z} %{!A:%{!nostdlib:%{!nostartfiles:%S}}}\
744 %{static:} %{L*} %(mfwrap) %(link_libgcc) %o\
745 %{fopenmp|ftree-parallelize-loops=*:%:include(libgomp.spec)%(link_gomp)} %(mflib)\
746 %{fprofile-arcs|fprofile-generate|coverage:-lgcov}\
747 %{!nostdlib:%{!nodefaultlibs:%(link_ssp) %(link_gcc_c_sequence)}}\
748 %{!A:%{!nostdlib:%{!nostartfiles:%E}}} %{T*} }}}}}}"
751 #ifndef LINK_LIBGCC_SPEC
752 /* Generate -L options for startfile prefix list. */
753 # define LINK_LIBGCC_SPEC "%D"
756 #ifndef STARTFILE_PREFIX_SPEC
757 # define STARTFILE_PREFIX_SPEC ""
761 # define SYSROOT_SPEC "--sysroot=%R"
764 #ifndef SYSROOT_SUFFIX_SPEC
765 # define SYSROOT_SUFFIX_SPEC ""
768 #ifndef SYSROOT_HEADERS_SUFFIX_SPEC
769 # define SYSROOT_HEADERS_SUFFIX_SPEC ""
772 static const char *asm_debug;
773 static const char *cpp_spec = CPP_SPEC;
774 static const char *cc1_spec = CC1_SPEC;
775 static const char *cc1plus_spec = CC1PLUS_SPEC;
776 static const char *link_gcc_c_sequence_spec = LINK_GCC_C_SEQUENCE_SPEC;
777 static const char *link_ssp_spec = LINK_SSP_SPEC;
778 static const char *asm_spec = ASM_SPEC;
779 static const char *asm_final_spec = ASM_FINAL_SPEC;
780 static const char *link_spec = LINK_SPEC;
781 static const char *lib_spec = LIB_SPEC;
782 static const char *mfwrap_spec = MFWRAP_SPEC;
783 static const char *mflib_spec = MFLIB_SPEC;
784 static const char *link_gomp_spec = "";
785 static const char *libgcc_spec = LIBGCC_SPEC;
786 static const char *endfile_spec = ENDFILE_SPEC;
787 static const char *startfile_spec = STARTFILE_SPEC;
788 static const char *switches_need_spaces = SWITCHES_NEED_SPACES;
789 static const char *linker_name_spec = LINKER_NAME;
790 static const char *link_command_spec = LINK_COMMAND_SPEC;
791 static const char *link_libgcc_spec = LINK_LIBGCC_SPEC;
792 static const char *startfile_prefix_spec = STARTFILE_PREFIX_SPEC;
793 static const char *sysroot_spec = SYSROOT_SPEC;
794 static const char *sysroot_suffix_spec = SYSROOT_SUFFIX_SPEC;
795 static const char *sysroot_hdrs_suffix_spec = SYSROOT_HEADERS_SUFFIX_SPEC;
797 /* Standard options to cpp, cc1, and as, to reduce duplication in specs.
798 There should be no need to override these in target dependent files,
799 but we need to copy them to the specs file so that newer versions
800 of the GCC driver can correctly drive older tool chains with the
801 appropriate -B options. */
803 /* When cpplib handles traditional preprocessing, get rid of this, and
804 call cc1 (or cc1obj in objc/lang-specs.h) from the main specs so
805 that we default the front end language better. */
806 static const char *trad_capable_cpp =
807 "cc1 -E %{traditional|ftraditional|traditional-cpp:-traditional-cpp}";
809 /* We don't wrap .d files in %W{} since a missing .d file, and
810 therefore no dependency entry, confuses make into thinking a .o
811 file that happens to exist is up-to-date. */
812 static const char *cpp_unique_options =
813 "%{C|CC:%{!E:%eGCC does not support -C or -CC without -E}}\
814 %{!Q:-quiet} %{nostdinc*} %{C} %{CC} %{v} %{I*&F*} %{P} %I\
815 %{MD:-MD %{!o:%b.d}%{o*:%.d%*}}\
816 %{MMD:-MMD %{!o:%b.d}%{o*:%.d%*}}\
817 %{M} %{MM} %{MF*} %{MG} %{MP} %{MQ*} %{MT*}\
818 %{!E:%{!M:%{!MM:%{!MT:%{!MQ:%{MD|MMD:%{o*:-MQ %*}}}}}}}\
819 %{remap} %{g3|ggdb3|gstabs3|gcoff3|gxcoff3|gvms3:-dD}\
820 %{H} %C %{D*&U*&A*} %{i*} %Z %i\
821 %{fmudflap:-D_MUDFLAP -include mf-runtime.h}\
822 %{fmudflapth:-D_MUDFLAP -D_MUDFLAPTH -include mf-runtime.h}\
825 /* This contains cpp options which are common with cc1_options and are passed
826 only when preprocessing only to avoid duplication. We pass the cc1 spec
827 options to the preprocessor so that it the cc1 spec may manipulate
828 options used to set target flags. Those special target flags settings may
829 in turn cause preprocessor symbols to be defined specially. */
830 static const char *cpp_options =
831 "%(cpp_unique_options) %1 %{m*} %{std*&ansi&trigraphs} %{W*&pedantic*} %{w}\
832 %{f*} %{g*:%{!g0:%{g*} %{!fno-working-directory:-fworking-directory}}} %{O*}\
833 %{undef} %{save-temps*:-fpch-preprocess}";
835 /* This contains cpp options which are not passed when the preprocessor
836 output will be used by another program. */
837 static const char *cpp_debug_options = "%{d*}";
839 /* NB: This is shared amongst all front-ends, except for Ada. */
840 static const char *cc1_options =
841 "%{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\
842 %1 %{!Q:-quiet} -dumpbase %B %{d*} %{m*} %{a*}\
843 %{c|S:%{o*:-auxbase-strip %*}%{!o*:-auxbase %b}}%{!c:%{!S:-auxbase %b}}\
844 %{g*} %{O*} %{W*&pedantic*} %{w} %{std*&ansi&trigraphs}\
845 %{v:-version} %{pg:-p} %{p} %{f*} %{undef}\
846 %{Qn:-fno-ident} %{--help:--help}\
847 %{--target-help:--target-help}\
848 %{--help=*:--help=%(VALUE)}\
849 %{!fsyntax-only:%{S:%W{o*}%{!o*:-o %b.s}}}\
850 %{fsyntax-only:-o %j} %{-param*}\
851 %{fmudflap|fmudflapth:-fno-builtin -fno-merge-constants}\
852 %{coverage:-fprofile-arcs -ftest-coverage}";
854 static const char *asm_options =
855 "%{--target-help:%:print-asm-header()} "
857 /* If GNU AS is used, then convert -w (no warnings), -I, and -v
858 to the assembler equivalents. */
859 "%{v} %{w:-W} %{I*} "
861 "%a %Y %{c:%W{o*}%{!o*:-o %w%b%O}}%{!c:-o %d%w%u%O}";
863 static const char *invoke_as =
864 #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT
865 "%{!S:-o %|.s |\n as %(asm_options) %|.s %A }";
867 "%{!S:-o %|.s |\n as %(asm_options) %m.s %A }";
870 /* Some compilers have limits on line lengths, and the multilib_select
871 and/or multilib_matches strings can be very long, so we build them at
873 static struct obstack multilib_obstack;
874 static const char *multilib_select;
875 static const char *multilib_matches;
876 static const char *multilib_defaults;
877 static const char *multilib_exclusions;
879 /* Check whether a particular argument is a default argument. */
881 #ifndef MULTILIB_DEFAULTS
882 #define MULTILIB_DEFAULTS { "" }
885 static const char *const multilib_defaults_raw[] = MULTILIB_DEFAULTS;
887 #ifndef DRIVER_SELF_SPECS
888 #define DRIVER_SELF_SPECS ""
891 /* Adding -fopenmp should imply pthreads. This is particularly important
892 for targets that use different start files and suchlike. */
893 #ifndef GOMP_SELF_SPECS
894 #define GOMP_SELF_SPECS "%{fopenmp|ftree-parallelize-loops=*: -pthread}"
897 static const char *const driver_self_specs[] = {
898 DRIVER_SELF_SPECS, GOMP_SELF_SPECS
901 #ifndef OPTION_DEFAULT_SPECS
902 #define OPTION_DEFAULT_SPECS { "", "" }
911 static const struct default_spec
912 option_default_specs[] = { OPTION_DEFAULT_SPECS };
916 struct user_specs *next;
917 const char *filename;
920 static struct user_specs *user_specs_head, *user_specs_tail;
922 #ifndef SWITCH_TAKES_ARG
923 #define SWITCH_TAKES_ARG(CHAR) DEFAULT_SWITCH_TAKES_ARG(CHAR)
926 #ifndef WORD_SWITCH_TAKES_ARG
927 #define WORD_SWITCH_TAKES_ARG(STR) DEFAULT_WORD_SWITCH_TAKES_ARG (STR)
930 #ifdef HAVE_TARGET_EXECUTABLE_SUFFIX
931 /* This defines which switches stop a full compilation. */
932 #define DEFAULT_SWITCH_CURTAILS_COMPILATION(CHAR) \
933 ((CHAR) == 'c' || (CHAR) == 'S')
935 #ifndef SWITCH_CURTAILS_COMPILATION
936 #define SWITCH_CURTAILS_COMPILATION(CHAR) \
937 DEFAULT_SWITCH_CURTAILS_COMPILATION(CHAR)
941 /* Record the mapping from file suffixes for compilation specs. */
945 const char *suffix; /* Use this compiler for input files
946 whose names end in this suffix. */
948 const char *spec; /* To use this compiler, run this spec. */
950 const char *cpp_spec; /* If non-NULL, substitute this spec
951 for `%C', rather than the usual
953 const int combinable; /* If nonzero, compiler can deal with
954 multiple source files at once (IMA). */
955 const int needs_preprocessing; /* If nonzero, source files need to
956 be run through a preprocessor. */
959 /* Pointer to a vector of `struct compiler' that gives the spec for
960 compiling a file, based on its suffix.
961 A file that does not end in any of these suffixes will be passed
962 unchanged to the loader and nothing else will be done to it.
964 An entry containing two 0s is used to terminate the vector.
966 If multiple entries match a file, the last matching one is used. */
968 static struct compiler *compilers;
970 /* Number of entries in `compilers', not counting the null terminator. */
972 static int n_compilers;
974 /* The default list of file name suffixes and their compilation specs. */
976 static const struct compiler default_compilers[] =
978 /* Add lists of suffixes of known languages here. If those languages
979 were not present when we built the driver, we will hit these copies
980 and be given a more meaningful error than "file not used since
981 linking is not done". */
982 {".m", "#Objective-C", 0, 0, 0}, {".mi", "#Objective-C", 0, 0, 0},
983 {".mm", "#Objective-C++", 0, 0, 0}, {".M", "#Objective-C++", 0, 0, 0},
984 {".mii", "#Objective-C++", 0, 0, 0},
985 {".cc", "#C++", 0, 0, 0}, {".cxx", "#C++", 0, 0, 0},
986 {".cpp", "#C++", 0, 0, 0}, {".cp", "#C++", 0, 0, 0},
987 {".c++", "#C++", 0, 0, 0}, {".C", "#C++", 0, 0, 0},
988 {".CPP", "#C++", 0, 0, 0}, {".ii", "#C++", 0, 0, 0},
989 {".ads", "#Ada", 0, 0, 0}, {".adb", "#Ada", 0, 0, 0},
990 {".f", "#Fortran", 0, 0, 0}, {".F", "#Fortran", 0, 0, 0},
991 {".for", "#Fortran", 0, 0, 0}, {".FOR", "#Fortran", 0, 0, 0},
992 {".ftn", "#Fortran", 0, 0, 0}, {".FTN", "#Fortran", 0, 0, 0},
993 {".fpp", "#Fortran", 0, 0, 0}, {".FPP", "#Fortran", 0, 0, 0},
994 {".f90", "#Fortran", 0, 0, 0}, {".F90", "#Fortran", 0, 0, 0},
995 {".f95", "#Fortran", 0, 0, 0}, {".F95", "#Fortran", 0, 0, 0},
996 {".f03", "#Fortran", 0, 0, 0}, {".F03", "#Fortran", 0, 0, 0},
997 {".f08", "#Fortran", 0, 0, 0}, {".F08", "#Fortran", 0, 0, 0},
998 {".r", "#Ratfor", 0, 0, 0},
999 {".p", "#Pascal", 0, 0, 0}, {".pas", "#Pascal", 0, 0, 0},
1000 {".java", "#Java", 0, 0, 0}, {".class", "#Java", 0, 0, 0},
1001 {".zip", "#Java", 0, 0, 0}, {".jar", "#Java", 0, 0, 0},
1002 /* Next come the entries for C. */
1003 {".c", "@c", 0, 1, 1},
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 %{traditional|ftraditional:\
1010 %eGNU C no longer supports -traditional without -E}\
1012 %{save-temps*|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
1013 %(cpp_options) -o %{save-temps*:%b.i} %{!save-temps*:%g.i} \n\
1014 cc1 -fpreprocessed %{save-temps*:%b.i} %{!save-temps*:%g.i} \
1016 %{!save-temps*:%{!traditional-cpp:%{!no-integrated-cpp:\
1017 cc1 %(cpp_unique_options) %(cc1_options)}}}\
1018 %{!fsyntax-only:%(invoke_as)}} \
1020 %{save-temps*|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
1021 %(cpp_options) -o %{save-temps*:%b.i} %{!save-temps*:%g.i}}\
1022 %{!save-temps*:%{!traditional-cpp:%{!no-integrated-cpp:\
1023 cc1 %(cpp_unique_options) %(cc1_options)}}\
1024 %{!fsyntax-only:%(invoke_as)}}}}}}", 0, 1, 1},
1026 "%{!E:%e-E or -x required when input is from standard input}\
1027 %(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)", 0, 0, 0},
1028 {".h", "@c-header", 0, 0, 0},
1030 /* cc1 has an integrated ISO C preprocessor. We should invoke the
1031 external preprocessor if -save-temps is given. */
1032 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\
1034 %{save-temps*|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
1035 %(cpp_options) -o %{save-temps*:%b.i} %{!save-temps*:%g.i} \n\
1036 cc1 -fpreprocessed %{save-temps*:%b.i} %{!save-temps*:%g.i} \
1038 -o %g.s %{!o*:--output-pch=%i.gch}\
1039 %W{o*:--output-pch=%*}%V}\
1040 %{!save-temps*:%{!traditional-cpp:%{!no-integrated-cpp:\
1041 cc1 %(cpp_unique_options) %(cc1_options)\
1042 -o %g.s %{!o*:--output-pch=%i.gch}\
1043 %W{o*:--output-pch=%*}%V}}}}}}", 0, 0, 0},
1044 {".i", "@cpp-output", 0, 1, 0},
1046 "%{!M:%{!MM:%{!E:cc1 -fpreprocessed %i %(cc1_options) %{!fsyntax-only:%(invoke_as)}}}}", 0, 1, 0},
1047 {".s", "@assembler", 0, 1, 0},
1049 "%{!M:%{!MM:%{!E:%{!S:as %(asm_debug) %(asm_options) %i %A }}}}", 0, 1, 0},
1050 {".sx", "@assembler-with-cpp", 0, 1, 0},
1051 {".S", "@assembler-with-cpp", 0, 1, 0},
1052 {"@assembler-with-cpp",
1053 #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT
1054 "%(trad_capable_cpp) -lang-asm %(cpp_options) -fno-directives-only\
1055 %{E|M|MM:%(cpp_debug_options)}\
1056 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\
1057 as %(asm_debug) %(asm_options) %|.s %A }}}}"
1059 "%(trad_capable_cpp) -lang-asm %(cpp_options) -fno-directives-only\
1060 %{E|M|MM:%(cpp_debug_options)}\
1061 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\
1062 as %(asm_debug) %(asm_options) %m.s %A }}}}"
1067 /* Mark end of table. */
1071 /* Number of elements in default_compilers, not counting the terminator. */
1073 static const int n_default_compilers = ARRAY_SIZE (default_compilers) - 1;
1075 /* A vector of options to give to the linker.
1076 These options are accumulated by %x,
1077 and substituted into the linker command with %X. */
1078 static int n_linker_options;
1079 static char **linker_options;
1081 /* A vector of options to give to the assembler.
1082 These options are accumulated by -Wa,
1083 and substituted into the assembler command with %Y. */
1084 static int n_assembler_options;
1085 static char **assembler_options;
1087 /* A vector of options to give to the preprocessor.
1088 These options are accumulated by -Wp,
1089 and substituted into the preprocessor command with %Z. */
1090 static int n_preprocessor_options;
1091 static char **preprocessor_options;
1093 /* Define how to map long options into short ones. */
1095 /* This structure describes one mapping. */
1098 /* The long option's name. */
1099 const char *const name;
1100 /* The equivalent short option. */
1101 const char *const equivalent;
1102 /* Argument info. A string of flag chars; NULL equals no options.
1103 a => argument required.
1104 o => argument optional.
1105 j => join argument to equivalent, making one word.
1106 * => require other text after NAME as an argument. */
1107 const char *const arg_info;
1110 /* This is the table of mappings. Mappings are tried sequentially
1111 for each option encountered; the first one that matches, wins. */
1113 static const struct option_map option_map[] =
1115 {"--all-warnings", "-Wall", 0},
1116 {"--ansi", "-ansi", 0},
1117 {"--assemble", "-S", 0},
1118 {"--assert", "-A", "a"},
1119 {"--classpath", "-fclasspath=", "aj"},
1120 {"--bootclasspath", "-fbootclasspath=", "aj"},
1121 {"--CLASSPATH", "-fclasspath=", "aj"},
1122 {"--combine", "-combine", 0},
1123 {"--comments", "-C", 0},
1124 {"--comments-in-macros", "-CC", 0},
1125 {"--compile", "-c", 0},
1126 {"--debug", "-g", "oj"},
1127 {"--define-macro", "-D", "aj"},
1128 {"--dependencies", "-M", 0},
1129 {"--dump", "-d", "a"},
1130 {"--dumpbase", "-dumpbase", "a"},
1131 {"--encoding", "-fencoding=", "aj"},
1132 {"--entry", "-e", 0},
1133 {"--extra-warnings", "-W", 0},
1134 {"--extdirs", "-fextdirs=", "aj"},
1135 {"--for-assembler", "-Wa", "a"},
1136 {"--for-linker", "-Xlinker", "a"},
1137 {"--force-link", "-u", "a"},
1138 {"--coverage", "-coverage", 0},
1139 {"--imacros", "-imacros", "a"},
1140 {"--include", "-include", "a"},
1141 {"--include-barrier", "-I-", 0},
1142 {"--include-directory", "-I", "aj"},
1143 {"--include-directory-after", "-idirafter", "a"},
1144 {"--include-prefix", "-iprefix", "a"},
1145 {"--include-with-prefix", "-iwithprefix", "a"},
1146 {"--include-with-prefix-before", "-iwithprefixbefore", "a"},
1147 {"--include-with-prefix-after", "-iwithprefix", "a"},
1148 {"--language", "-x", "a"},
1149 {"--library-directory", "-L", "a"},
1150 {"--machine", "-m", "aj"},
1151 {"--machine-", "-m", "*j"},
1152 {"--no-integrated-cpp", "-no-integrated-cpp", 0},
1153 {"--no-line-commands", "-P", 0},
1154 {"--no-precompiled-includes", "-noprecomp", 0},
1155 {"--no-standard-includes", "-nostdinc", 0},
1156 {"--no-standard-libraries", "-nostdlib", 0},
1157 {"--no-warnings", "-w", 0},
1158 {"--optimize", "-O", "oj"},
1159 {"--output", "-o", "a"},
1160 {"--output-class-directory", "-foutput-class-dir=", "ja"},
1161 {"--param", "--param", "a"},
1162 {"--pass-exit-codes", "-pass-exit-codes", 0},
1163 {"--pedantic", "-pedantic", 0},
1164 {"--pedantic-errors", "-pedantic-errors", 0},
1165 {"--pie", "-pie", 0},
1166 {"--pipe", "-pipe", 0},
1167 {"--prefix", "-B", "a"},
1168 {"--preprocess", "-E", 0},
1169 {"--print-search-dirs", "-print-search-dirs", 0},
1170 {"--print-file-name", "-print-file-name=", "aj"},
1171 {"--print-libgcc-file-name", "-print-libgcc-file-name", 0},
1172 {"--print-missing-file-dependencies", "-MG", 0},
1173 {"--print-multi-lib", "-print-multi-lib", 0},
1174 {"--print-multi-directory", "-print-multi-directory", 0},
1175 {"--print-multi-os-directory", "-print-multi-os-directory", 0},
1176 {"--print-prog-name", "-print-prog-name=", "aj"},
1177 {"--print-sysroot", "-print-sysroot", 0},
1178 {"--print-sysroot-headers-suffix", "-print-sysroot-headers-suffix", 0},
1179 {"--profile", "-p", 0},
1180 {"--profile-blocks", "-a", 0},
1181 {"--quiet", "-q", 0},
1182 {"--resource", "-fcompile-resource=", "aj"},
1183 {"--save-temps", "-save-temps", 0},
1184 {"--shared", "-shared", 0},
1185 {"--silent", "-q", 0},
1186 {"--specs", "-specs=", "aj"},
1187 {"--static", "-static", 0},
1188 {"--std", "-std=", "aj"},
1189 {"--symbolic", "-symbolic", 0},
1190 {"--sysroot", "--sysroot=", "aj"},
1191 {"--time", "-time", 0},
1192 {"--trace-includes", "-H", 0},
1193 {"--traditional", "-traditional", 0},
1194 {"--traditional-cpp", "-traditional-cpp", 0},
1195 {"--trigraphs", "-trigraphs", 0},
1196 {"--undefine-macro", "-U", "aj"},
1197 {"--user-dependencies", "-MM", 0},
1198 {"--verbose", "-v", 0},
1199 {"--warn-", "-W", "*j"},
1200 {"--write-dependencies", "-MD", 0},
1201 {"--write-user-dependencies", "-MMD", 0},
1206 #ifdef TARGET_OPTION_TRANSLATE_TABLE
1207 static const struct {
1208 const char *const option_found;
1209 const char *const replacements;
1210 } target_option_translations[] =
1212 TARGET_OPTION_TRANSLATE_TABLE,
1217 /* Translate the options described by *ARGCP and *ARGVP.
1218 Make a new vector and store it back in *ARGVP,
1219 and store its length in *ARGCP. */
1222 translate_options (int *argcp, const char *const **argvp)
1226 const char *const *argv = *argvp;
1227 int newvsize = (argc + 2) * 2 * sizeof (const char *);
1228 const char **newv = XNEWVAR (const char *, newvsize);
1232 newv[newindex++] = argv[i++];
1236 #ifdef TARGET_OPTION_TRANSLATE_TABLE
1240 target_option_translations[tott_idx].option_found;
1243 if (strcmp (target_option_translations[tott_idx].option_found,
1250 for (sp = target_option_translations[tott_idx].replacements;
1257 newvsize += spaces * sizeof (const char *);
1258 newv = XRESIZEVAR (const char *, newv, newvsize);
1260 sp = target_option_translations[tott_idx].replacements;
1269 newv[newindex++] = np;
1270 while (*np != ' ' && *np)
1281 if (target_option_translations[tott_idx].option_found)
1285 /* Translate -- options. */
1286 if (argv[i][0] == '-' && argv[i][1] == '-')
1289 /* Find a mapping that applies to this option. */
1290 for (j = 0; j < ARRAY_SIZE (option_map); j++)
1292 size_t optlen = strlen (option_map[j].name);
1293 size_t arglen = strlen (argv[i]);
1294 size_t complen = arglen > optlen ? optlen : arglen;
1295 const char *arginfo = option_map[j].arg_info;
1300 if (!strncmp (argv[i], option_map[j].name, complen))
1302 const char *arg = 0;
1304 if (arglen < optlen)
1307 for (k = j + 1; k < ARRAY_SIZE (option_map); k++)
1308 if (strlen (option_map[k].name) >= arglen
1309 && !strncmp (argv[i], option_map[k].name, arglen))
1311 error ("ambiguous abbreviation %s", argv[i]);
1315 if (k != ARRAY_SIZE (option_map))
1319 if (arglen > optlen)
1321 /* If the option has an argument, accept that. */
1322 if (argv[i][optlen] == '=')
1323 arg = argv[i] + optlen + 1;
1325 /* If this mapping requires extra text at end of name,
1326 accept that as "argument". */
1327 else if (strchr (arginfo, '*') != 0)
1328 arg = argv[i] + optlen;
1330 /* Otherwise, extra text at end means mismatch.
1331 Try other mappings. */
1336 else if (strchr (arginfo, '*') != 0)
1338 error ("incomplete '%s' option", option_map[j].name);
1342 /* Handle arguments. */
1343 if (strchr (arginfo, 'a') != 0)
1349 error ("missing argument to '%s' option",
1350 option_map[j].name);
1357 else if (strchr (arginfo, '*') != 0)
1359 else if (strchr (arginfo, 'o') == 0)
1362 error ("extraneous argument to '%s' option",
1363 option_map[j].name);
1367 /* Store the translation as one argv elt or as two. */
1368 if (arg != 0 && strchr (arginfo, 'j') != 0)
1369 newv[newindex++] = concat (option_map[j].equivalent, arg,
1373 newv[newindex++] = option_map[j].equivalent;
1374 newv[newindex++] = arg;
1377 newv[newindex++] = option_map[j].equivalent;
1385 /* Handle old-fashioned options--just copy them through,
1386 with their arguments. */
1387 else if (argv[i][0] == '-')
1389 const char *p = argv[i] + 1;
1393 if (SWITCH_TAKES_ARG (c) > (p[1] != 0))
1394 nskip += SWITCH_TAKES_ARG (c) - (p[1] != 0);
1395 else if (WORD_SWITCH_TAKES_ARG (p))
1396 nskip += WORD_SWITCH_TAKES_ARG (p);
1397 else if ((c == 'B' || c == 'b' || c == 'x')
1400 else if (! strcmp (p, "Xlinker"))
1402 else if (! strcmp (p, "Xpreprocessor"))
1404 else if (! strcmp (p, "Xassembler"))
1407 /* Watch out for an option at the end of the command line that
1408 is missing arguments, and avoid skipping past the end of the
1410 if (nskip + i > argc)
1415 newv[newindex++] = argv[i++];
1420 /* Ordinary operands, or +e options. */
1421 newv[newindex++] = argv[i++];
1431 skip_whitespace (char *p)
1435 /* A fully-blank line is a delimiter in the SPEC file and shouldn't
1436 be considered whitespace. */
1437 if (p[0] == '\n' && p[1] == '\n' && p[2] == '\n')
1439 else if (*p == '\n' || *p == ' ' || *p == '\t')
1453 /* Structures to keep track of prefixes to try when looking for files. */
1457 const char *prefix; /* String to prepend to the path. */
1458 struct prefix_list *next; /* Next in linked list. */
1459 int require_machine_suffix; /* Don't use without machine_suffix. */
1460 /* 2 means try both machine_suffix and just_machine_suffix. */
1461 int priority; /* Sort key - priority within list. */
1462 int os_multilib; /* 1 if OS multilib scheme should be used,
1463 0 for GCC multilib scheme. */
1468 struct prefix_list *plist; /* List of prefixes to try */
1469 int max_len; /* Max length of a prefix in PLIST */
1470 const char *name; /* Name of this list (used in config stuff) */
1473 /* List of prefixes to try when looking for executables. */
1475 static struct path_prefix exec_prefixes = { 0, 0, "exec" };
1477 /* List of prefixes to try when looking for startup (crt0) files. */
1479 static struct path_prefix startfile_prefixes = { 0, 0, "startfile" };
1481 /* List of prefixes to try when looking for include files. */
1483 static struct path_prefix include_prefixes = { 0, 0, "include" };
1485 /* Suffix to attach to directories searched for commands.
1486 This looks like `MACHINE/VERSION/'. */
1488 static const char *machine_suffix = 0;
1490 /* Suffix to attach to directories searched for commands.
1491 This is just `MACHINE/'. */
1493 static const char *just_machine_suffix = 0;
1495 /* Adjusted value of GCC_EXEC_PREFIX envvar. */
1497 static const char *gcc_exec_prefix;
1499 /* Adjusted value of standard_libexec_prefix. */
1501 static const char *gcc_libexec_prefix;
1503 /* Default prefixes to attach to command names. */
1505 #ifndef STANDARD_STARTFILE_PREFIX_1
1506 #define STANDARD_STARTFILE_PREFIX_1 "/lib/"
1508 #ifndef STANDARD_STARTFILE_PREFIX_2
1509 #define STANDARD_STARTFILE_PREFIX_2 "/usr/lib/"
1512 #ifdef CROSS_DIRECTORY_STRUCTURE /* Don't use these prefixes for a cross compiler. */
1513 #undef MD_EXEC_PREFIX
1514 #undef MD_STARTFILE_PREFIX
1515 #undef MD_STARTFILE_PREFIX_1
1518 /* If no prefixes defined, use the null string, which will disable them. */
1519 #ifndef MD_EXEC_PREFIX
1520 #define MD_EXEC_PREFIX ""
1522 #ifndef MD_STARTFILE_PREFIX
1523 #define MD_STARTFILE_PREFIX ""
1525 #ifndef MD_STARTFILE_PREFIX_1
1526 #define MD_STARTFILE_PREFIX_1 ""
1529 /* These directories are locations set at configure-time based on the
1530 --prefix option provided to configure. Their initializers are
1531 defined in Makefile.in. These paths are not *directly* used when
1532 gcc_exec_prefix is set because, in that case, we know where the
1533 compiler has been installed, and use paths relative to that
1534 location instead. */
1535 static const char *const standard_exec_prefix = STANDARD_EXEC_PREFIX;
1536 static const char *const standard_libexec_prefix = STANDARD_LIBEXEC_PREFIX;
1537 static const char *const standard_bindir_prefix = STANDARD_BINDIR_PREFIX;
1538 static const char *const standard_startfile_prefix = STANDARD_STARTFILE_PREFIX;
1540 /* For native compilers, these are well-known paths containing
1541 components that may be provided by the system. For cross
1542 compilers, these paths are not used. */
1543 static const char *const standard_exec_prefix_1 = "/usr/libexec/gcc/";
1544 static const char *const standard_exec_prefix_2 = "/usr/lib/gcc/";
1545 static const char *md_exec_prefix = MD_EXEC_PREFIX;
1546 static const char *md_startfile_prefix = MD_STARTFILE_PREFIX;
1547 static const char *md_startfile_prefix_1 = MD_STARTFILE_PREFIX_1;
1548 static const char *const standard_startfile_prefix_1
1549 = STANDARD_STARTFILE_PREFIX_1;
1550 static const char *const standard_startfile_prefix_2
1551 = STANDARD_STARTFILE_PREFIX_2;
1553 /* A relative path to be used in finding the location of tools
1554 relative to the driver. */
1555 static const char *const tooldir_base_prefix = TOOLDIR_BASE_PREFIX;
1557 /* Subdirectory to use for locating libraries. Set by
1558 set_multilib_dir based on the compilation options. */
1560 static const char *multilib_dir;
1562 /* Subdirectory to use for locating libraries in OS conventions. Set by
1563 set_multilib_dir based on the compilation options. */
1565 static const char *multilib_os_dir;
1567 /* Structure to keep track of the specs that have been defined so far.
1568 These are accessed using %(specname) or %[specname] in a compiler
1573 /* The following 2 fields must be first */
1574 /* to allow EXTRA_SPECS to be initialized */
1575 const char *name; /* name of the spec. */
1576 const char *ptr; /* available ptr if no static pointer */
1578 /* The following fields are not initialized */
1579 /* by EXTRA_SPECS */
1580 const char **ptr_spec; /* pointer to the spec itself. */
1581 struct spec_list *next; /* Next spec in linked list. */
1582 int name_len; /* length of the name */
1583 int alloc_p; /* whether string was allocated */
1586 #define INIT_STATIC_SPEC(NAME,PTR) \
1587 { NAME, NULL, PTR, (struct spec_list *) 0, sizeof (NAME) - 1, 0 }
1589 /* List of statically defined specs. */
1590 static struct spec_list static_specs[] =
1592 INIT_STATIC_SPEC ("asm", &asm_spec),
1593 INIT_STATIC_SPEC ("asm_debug", &asm_debug),
1594 INIT_STATIC_SPEC ("asm_final", &asm_final_spec),
1595 INIT_STATIC_SPEC ("asm_options", &asm_options),
1596 INIT_STATIC_SPEC ("invoke_as", &invoke_as),
1597 INIT_STATIC_SPEC ("cpp", &cpp_spec),
1598 INIT_STATIC_SPEC ("cpp_options", &cpp_options),
1599 INIT_STATIC_SPEC ("cpp_debug_options", &cpp_debug_options),
1600 INIT_STATIC_SPEC ("cpp_unique_options", &cpp_unique_options),
1601 INIT_STATIC_SPEC ("trad_capable_cpp", &trad_capable_cpp),
1602 INIT_STATIC_SPEC ("cc1", &cc1_spec),
1603 INIT_STATIC_SPEC ("cc1_options", &cc1_options),
1604 INIT_STATIC_SPEC ("cc1plus", &cc1plus_spec),
1605 INIT_STATIC_SPEC ("link_gcc_c_sequence", &link_gcc_c_sequence_spec),
1606 INIT_STATIC_SPEC ("link_ssp", &link_ssp_spec),
1607 INIT_STATIC_SPEC ("endfile", &endfile_spec),
1608 INIT_STATIC_SPEC ("link", &link_spec),
1609 INIT_STATIC_SPEC ("lib", &lib_spec),
1610 INIT_STATIC_SPEC ("mfwrap", &mfwrap_spec),
1611 INIT_STATIC_SPEC ("mflib", &mflib_spec),
1612 INIT_STATIC_SPEC ("link_gomp", &link_gomp_spec),
1613 INIT_STATIC_SPEC ("libgcc", &libgcc_spec),
1614 INIT_STATIC_SPEC ("startfile", &startfile_spec),
1615 INIT_STATIC_SPEC ("switches_need_spaces", &switches_need_spaces),
1616 INIT_STATIC_SPEC ("cross_compile", &cross_compile),
1617 INIT_STATIC_SPEC ("version", &compiler_version),
1618 INIT_STATIC_SPEC ("multilib", &multilib_select),
1619 INIT_STATIC_SPEC ("multilib_defaults", &multilib_defaults),
1620 INIT_STATIC_SPEC ("multilib_extra", &multilib_extra),
1621 INIT_STATIC_SPEC ("multilib_matches", &multilib_matches),
1622 INIT_STATIC_SPEC ("multilib_exclusions", &multilib_exclusions),
1623 INIT_STATIC_SPEC ("multilib_options", &multilib_options),
1624 INIT_STATIC_SPEC ("linker", &linker_name_spec),
1625 INIT_STATIC_SPEC ("link_libgcc", &link_libgcc_spec),
1626 INIT_STATIC_SPEC ("md_exec_prefix", &md_exec_prefix),
1627 INIT_STATIC_SPEC ("md_startfile_prefix", &md_startfile_prefix),
1628 INIT_STATIC_SPEC ("md_startfile_prefix_1", &md_startfile_prefix_1),
1629 INIT_STATIC_SPEC ("startfile_prefix_spec", &startfile_prefix_spec),
1630 INIT_STATIC_SPEC ("sysroot_spec", &sysroot_spec),
1631 INIT_STATIC_SPEC ("sysroot_suffix_spec", &sysroot_suffix_spec),
1632 INIT_STATIC_SPEC ("sysroot_hdrs_suffix_spec", &sysroot_hdrs_suffix_spec),
1635 #ifdef EXTRA_SPECS /* additional specs needed */
1636 /* Structure to keep track of just the first two args of a spec_list.
1637 That is all that the EXTRA_SPECS macro gives us. */
1640 const char *const name;
1641 const char *const ptr;
1644 static const struct spec_list_1 extra_specs_1[] = { EXTRA_SPECS };
1645 static struct spec_list *extra_specs = (struct spec_list *) 0;
1648 /* List of dynamically allocates specs that have been defined so far. */
1650 static struct spec_list *specs = (struct spec_list *) 0;
1652 /* List of static spec functions. */
1654 static const struct spec_function static_spec_functions[] =
1656 { "getenv", getenv_spec_function },
1657 { "if-exists", if_exists_spec_function },
1658 { "if-exists-else", if_exists_else_spec_function },
1659 { "replace-outfile", replace_outfile_spec_function },
1660 { "version-compare", version_compare_spec_function },
1661 { "include", include_spec_function },
1662 { "print-asm-header", print_asm_header_spec_function },
1663 #ifdef EXTRA_SPEC_FUNCTIONS
1664 EXTRA_SPEC_FUNCTIONS
1669 static int processing_spec_function;
1671 /* Add appropriate libgcc specs to OBSTACK, taking into account
1672 various permutations of -shared-libgcc, -shared, and such. */
1674 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
1676 #ifndef USE_LD_AS_NEEDED
1677 #define USE_LD_AS_NEEDED 0
1681 init_gcc_specs (struct obstack *obstack, const char *shared_name,
1682 const char *static_name, const char *eh_name)
1686 buf = concat ("%{static|static-libgcc:", static_name, " ", eh_name, "}"
1687 "%{!static:%{!static-libgcc:"
1688 #if USE_LD_AS_NEEDED
1689 "%{!shared-libgcc:",
1690 static_name, " --as-needed ", shared_name, " --no-as-needed"
1693 shared_name, "%{!shared: ", static_name, "}"
1697 "%{!shared-libgcc:", static_name, " ", eh_name, "}"
1698 "%{shared-libgcc:", shared_name, " ", static_name, "}"
1702 "%{shared-libgcc:", shared_name, "}"
1703 "%{!shared-libgcc:", static_name, "}"
1706 "%{shared:", shared_name, "}"
1711 obstack_grow (obstack, buf, strlen (buf));
1714 #endif /* ENABLE_SHARED_LIBGCC */
1716 /* Initialize the specs lookup routines. */
1721 struct spec_list *next = (struct spec_list *) 0;
1722 struct spec_list *sl = (struct spec_list *) 0;
1726 return; /* Already initialized. */
1729 notice ("Using built-in specs.\n");
1732 extra_specs = XCNEWVEC (struct spec_list, ARRAY_SIZE (extra_specs_1));
1734 for (i = ARRAY_SIZE (extra_specs_1) - 1; i >= 0; i--)
1736 sl = &extra_specs[i];
1737 sl->name = extra_specs_1[i].name;
1738 sl->ptr = extra_specs_1[i].ptr;
1740 sl->name_len = strlen (sl->name);
1741 sl->ptr_spec = &sl->ptr;
1746 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--)
1748 sl = &static_specs[i];
1753 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
1754 /* ??? If neither -shared-libgcc nor --static-libgcc was
1755 seen, then we should be making an educated guess. Some proposed
1756 heuristics for ELF include:
1758 (1) If "-Wl,--export-dynamic", then it's a fair bet that the
1759 program will be doing dynamic loading, which will likely
1760 need the shared libgcc.
1762 (2) If "-ldl", then it's also a fair bet that we're doing
1765 (3) For each ET_DYN we're linking against (either through -lfoo
1766 or /some/path/foo.so), check to see whether it or one of
1767 its dependencies depends on a shared libgcc.
1771 If the runtime is fixed to look for program headers instead
1772 of calling __register_frame_info at all, for each object,
1773 use the shared libgcc if any EH symbol referenced.
1775 If crtstuff is fixed to not invoke __register_frame_info
1776 automatically, for each object, use the shared libgcc if
1777 any non-empty unwind section found.
1779 Doing any of this probably requires invoking an external program to
1780 do the actual object file scanning. */
1782 const char *p = libgcc_spec;
1785 /* Transform the extant libgcc_spec into one that uses the shared libgcc
1786 when given the proper command line arguments. */
1789 if (in_sep && *p == '-' && strncmp (p, "-lgcc", 5) == 0)
1791 init_gcc_specs (&obstack,
1793 #ifdef USE_LIBUNWIND_EXCEPTIONS
1799 #ifdef USE_LIBUNWIND_EXCEPTIONS
1800 # ifdef HAVE_LD_STATIC_DYNAMIC
1801 " %{!static:-Bstatic} -lunwind %{!static:-Bdynamic}"
1811 else if (in_sep && *p == 'l' && strncmp (p, "libgcc.a%s", 10) == 0)
1813 /* Ug. We don't know shared library extensions. Hope that
1814 systems that use this form don't do shared libraries. */
1815 init_gcc_specs (&obstack,
1819 #ifdef USE_LIBUNWIND_EXCEPTIONS
1828 obstack_1grow (&obstack, *p);
1829 in_sep = (*p == ' ');
1834 obstack_1grow (&obstack, '\0');
1835 libgcc_spec = XOBFINISH (&obstack, const char *);
1838 #ifdef USE_AS_TRADITIONAL_FORMAT
1839 /* Prepend "--traditional-format" to whatever asm_spec we had before. */
1841 static const char tf[] = "--traditional-format ";
1842 obstack_grow (&obstack, tf, sizeof(tf) - 1);
1843 obstack_grow0 (&obstack, asm_spec, strlen (asm_spec));
1844 asm_spec = XOBFINISH (&obstack, const char *);
1848 /* Prepend LINK_EH_SPEC to whatever link_spec we had before. */
1849 obstack_grow (&obstack, LINK_EH_SPEC, sizeof(LINK_EH_SPEC) - 1);
1850 obstack_grow0 (&obstack, link_spec, strlen (link_spec));
1851 link_spec = XOBFINISH (&obstack, const char *);
1857 /* Change the value of spec NAME to SPEC. If SPEC is empty, then the spec is
1858 removed; If the spec starts with a + then SPEC is added to the end of the
1862 set_spec (const char *name, const char *spec)
1864 struct spec_list *sl;
1865 const char *old_spec;
1866 int name_len = strlen (name);
1869 /* If this is the first call, initialize the statically allocated specs. */
1872 struct spec_list *next = (struct spec_list *) 0;
1873 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--)
1875 sl = &static_specs[i];
1882 /* See if the spec already exists. */
1883 for (sl = specs; sl; sl = sl->next)
1884 if (name_len == sl->name_len && !strcmp (sl->name, name))
1889 /* Not found - make it. */
1890 sl = XNEW (struct spec_list);
1891 sl->name = xstrdup (name);
1892 sl->name_len = name_len;
1893 sl->ptr_spec = &sl->ptr;
1895 *(sl->ptr_spec) = "";
1900 old_spec = *(sl->ptr_spec);
1901 *(sl->ptr_spec) = ((spec[0] == '+' && ISSPACE ((unsigned char)spec[1]))
1902 ? concat (old_spec, spec + 1, NULL)
1907 notice ("Setting spec %s to '%s'\n\n", name, *(sl->ptr_spec));
1910 /* Free the old spec. */
1911 if (old_spec && sl->alloc_p)
1912 free (CONST_CAST(char *, old_spec));
1917 /* Accumulate a command (program name and args), and run it. */
1919 /* Vector of pointers to arguments in the current line of specifications. */
1921 static const char **argbuf;
1923 /* Number of elements allocated in argbuf. */
1925 static int argbuf_length;
1927 /* Number of elements in argbuf currently in use (containing args). */
1929 static int argbuf_index;
1931 /* Position in the argbuf array containing the name of the output file
1932 (the value associated with the "-o" flag). */
1934 static int have_o_argbuf_index = 0;
1936 /* Were the options -c or -S passed. */
1937 static int have_c = 0;
1939 /* Was the option -o passed. */
1940 static int have_o = 0;
1942 /* This is the list of suffixes and codes (%g/%u/%U/%j) and the associated
1943 temp file. If the HOST_BIT_BUCKET is used for %j, no entry is made for
1946 static struct temp_name {
1947 const char *suffix; /* suffix associated with the code. */
1948 int length; /* strlen (suffix). */
1949 int unique; /* Indicates whether %g or %u/%U was used. */
1950 const char *filename; /* associated filename. */
1951 int filename_length; /* strlen (filename). */
1952 struct temp_name *next;
1955 /* Number of commands executed so far. */
1957 static int execution_count;
1959 /* Number of commands that exited with a signal. */
1961 static int signal_count;
1963 /* Name with which this program was invoked. */
1965 static const char *programname;
1967 /* Allocate the argument vector. */
1973 argbuf = XNEWVEC (const char *, argbuf_length);
1976 /* Clear out the vector of arguments (after a command is executed). */
1984 /* Add one argument to the vector at the end.
1985 This is done when a space is seen or at the end of the line.
1986 If DELETE_ALWAYS is nonzero, the arg is a filename
1987 and the file should be deleted eventually.
1988 If DELETE_FAILURE is nonzero, the arg is a filename
1989 and the file should be deleted if this compilation fails. */
1992 store_arg (const char *arg, int delete_always, int delete_failure)
1994 if (argbuf_index + 1 == argbuf_length)
1995 argbuf = XRESIZEVEC (const char *, argbuf, (argbuf_length *= 2));
1997 argbuf[argbuf_index++] = arg;
1998 argbuf[argbuf_index] = 0;
2000 if (strcmp (arg, "-o") == 0)
2001 have_o_argbuf_index = argbuf_index;
2002 if (delete_always || delete_failure)
2003 record_temp_file (arg, delete_always, delete_failure);
2006 /* Load specs from a file name named FILENAME, replacing occurrences of
2007 various different types of line-endings, \r\n, \n\r and just \r, with
2011 load_specs (const char *filename)
2015 struct stat statbuf;
2022 notice ("Reading specs from %s\n", filename);
2024 /* Open and stat the file. */
2025 desc = open (filename, O_RDONLY, 0);
2027 pfatal_with_name (filename);
2028 if (stat (filename, &statbuf) < 0)
2029 pfatal_with_name (filename);
2031 /* Read contents of file into BUFFER. */
2032 buffer = XNEWVEC (char, statbuf.st_size + 1);
2033 readlen = read (desc, buffer, (unsigned) statbuf.st_size);
2035 pfatal_with_name (filename);
2036 buffer[readlen] = 0;
2039 specs = XNEWVEC (char, readlen + 1);
2041 for (buffer_p = buffer; buffer_p && *buffer_p; buffer_p++)
2047 if (buffer_p > buffer && *(buffer_p - 1) == '\n') /* \n\r */
2049 else if (*(buffer_p + 1) == '\n') /* \r\n */
2063 /* Read compilation specs from a file named FILENAME,
2064 replacing the default ones.
2066 A suffix which starts with `*' is a definition for
2067 one of the machine-specific sub-specs. The "suffix" should be
2068 *asm, *cc1, *cpp, *link, *startfile, etc.
2069 The corresponding spec is stored in asm_spec, etc.,
2070 rather than in the `compilers' vector.
2072 Anything invalid in the file is a fatal error. */
2075 read_specs (const char *filename, int main_p)
2080 buffer = load_specs (filename);
2082 /* Scan BUFFER for specs, putting them in the vector. */
2088 char *in, *out, *p1, *p2, *p3;
2090 /* Advance P in BUFFER to the next nonblank nocomment line. */
2091 p = skip_whitespace (p);
2095 /* Is this a special command that starts with '%'? */
2096 /* Don't allow this for the main specs file, since it would
2097 encourage people to overwrite it. */
2098 if (*p == '%' && !main_p)
2101 while (*p && *p != '\n')
2107 if (!strncmp (p1, "%include", sizeof ("%include") - 1)
2108 && (p1[sizeof "%include" - 1] == ' '
2109 || p1[sizeof "%include" - 1] == '\t'))
2113 p1 += sizeof ("%include");
2114 while (*p1 == ' ' || *p1 == '\t')
2117 if (*p1++ != '<' || p[-2] != '>')
2118 fatal ("specs %%include syntax malformed after %ld characters",
2119 (long) (p1 - buffer + 1));
2122 new_filename = find_a_file (&startfile_prefixes, p1, R_OK, true);
2123 read_specs (new_filename ? new_filename : p1, FALSE);
2126 else if (!strncmp (p1, "%include_noerr", sizeof "%include_noerr" - 1)
2127 && (p1[sizeof "%include_noerr" - 1] == ' '
2128 || p1[sizeof "%include_noerr" - 1] == '\t'))
2132 p1 += sizeof "%include_noerr";
2133 while (*p1 == ' ' || *p1 == '\t')
2136 if (*p1++ != '<' || p[-2] != '>')
2137 fatal ("specs %%include syntax malformed after %ld characters",
2138 (long) (p1 - buffer + 1));
2141 new_filename = find_a_file (&startfile_prefixes, p1, R_OK, true);
2143 read_specs (new_filename, FALSE);
2144 else if (verbose_flag)
2145 notice ("could not find specs file %s\n", p1);
2148 else if (!strncmp (p1, "%rename", sizeof "%rename" - 1)
2149 && (p1[sizeof "%rename" - 1] == ' '
2150 || p1[sizeof "%rename" - 1] == '\t'))
2153 struct spec_list *sl;
2154 struct spec_list *newsl;
2156 /* Get original name. */
2157 p1 += sizeof "%rename";
2158 while (*p1 == ' ' || *p1 == '\t')
2161 if (! ISALPHA ((unsigned char) *p1))
2162 fatal ("specs %%rename syntax malformed after %ld characters",
2163 (long) (p1 - buffer));
2166 while (*p2 && !ISSPACE ((unsigned char) *p2))
2169 if (*p2 != ' ' && *p2 != '\t')
2170 fatal ("specs %%rename syntax malformed after %ld characters",
2171 (long) (p2 - buffer));
2175 while (*p2 == ' ' || *p2 == '\t')
2178 if (! ISALPHA ((unsigned char) *p2))
2179 fatal ("specs %%rename syntax malformed after %ld characters",
2180 (long) (p2 - buffer));
2182 /* Get new spec name. */
2184 while (*p3 && !ISSPACE ((unsigned char) *p3))
2188 fatal ("specs %%rename syntax malformed after %ld characters",
2189 (long) (p3 - buffer));
2192 for (sl = specs; sl; sl = sl->next)
2193 if (name_len == sl->name_len && !strcmp (sl->name, p1))
2197 fatal ("specs %s spec was not found to be renamed", p1);
2199 if (strcmp (p1, p2) == 0)
2202 for (newsl = specs; newsl; newsl = newsl->next)
2203 if (strcmp (newsl->name, p2) == 0)
2204 fatal ("%s: attempt to rename spec '%s' to already defined spec '%s'",
2209 notice ("rename spec %s to %s\n", p1, p2);
2211 notice ("spec is '%s'\n\n", *(sl->ptr_spec));
2215 set_spec (p2, *(sl->ptr_spec));
2217 free (CONST_CAST (char *, *(sl->ptr_spec)));
2219 *(sl->ptr_spec) = "";
2224 fatal ("specs unknown %% command after %ld characters",
2225 (long) (p1 - buffer));
2228 /* Find the colon that should end the suffix. */
2230 while (*p1 && *p1 != ':' && *p1 != '\n')
2233 /* The colon shouldn't be missing. */
2235 fatal ("specs file malformed after %ld characters",
2236 (long) (p1 - buffer));
2238 /* Skip back over trailing whitespace. */
2240 while (p2 > buffer && (p2[-1] == ' ' || p2[-1] == '\t'))
2243 /* Copy the suffix to a string. */
2244 suffix = save_string (p, p2 - p);
2245 /* Find the next line. */
2246 p = skip_whitespace (p1 + 1);
2248 fatal ("specs file malformed after %ld characters",
2249 (long) (p - buffer));
2252 /* Find next blank line or end of string. */
2253 while (*p1 && !(*p1 == '\n' && (p1[1] == '\n' || p1[1] == '\0')))
2256 /* Specs end at the blank line and do not include the newline. */
2257 spec = save_string (p, p1 - p);
2260 /* Delete backslash-newline sequences from the spec. */
2265 if (in[0] == '\\' && in[1] == '\n')
2267 else if (in[0] == '#')
2268 while (*in && *in != '\n')
2276 if (suffix[0] == '*')
2278 if (! strcmp (suffix, "*link_command"))
2279 link_command_spec = spec;
2281 set_spec (suffix + 1, spec);
2285 /* Add this pair to the vector. */
2287 = XRESIZEVEC (struct compiler, compilers, n_compilers + 2);
2289 compilers[n_compilers].suffix = suffix;
2290 compilers[n_compilers].spec = spec;
2292 memset (&compilers[n_compilers], 0, sizeof compilers[n_compilers]);
2296 link_command_spec = spec;
2299 if (link_command_spec == 0)
2300 fatal ("spec file has no spec for linking");
2303 /* Record the names of temporary files we tell compilers to write,
2304 and delete them at the end of the run. */
2306 /* This is the common prefix we use to make temp file names.
2307 It is chosen once for each run of this program.
2308 It is substituted into a spec by %g or %j.
2309 Thus, all temp file names contain this prefix.
2310 In practice, all temp file names start with this prefix.
2312 This prefix comes from the envvar TMPDIR if it is defined;
2313 otherwise, from the P_tmpdir macro if that is defined;
2314 otherwise, in /usr/tmp or /tmp;
2315 or finally the current directory if all else fails. */
2317 static const char *temp_filename;
2319 /* Length of the prefix. */
2321 static int temp_filename_length;
2323 /* Define the list of temporary files to delete. */
2328 struct temp_file *next;
2331 /* Queue of files to delete on success or failure of compilation. */
2332 static struct temp_file *always_delete_queue;
2333 /* Queue of files to delete on failure of compilation. */
2334 static struct temp_file *failure_delete_queue;
2336 /* Record FILENAME as a file to be deleted automatically.
2337 ALWAYS_DELETE nonzero means delete it if all compilation succeeds;
2338 otherwise delete it in any case.
2339 FAIL_DELETE nonzero means delete it if a compilation step fails;
2340 otherwise delete it in any case. */
2343 record_temp_file (const char *filename, int always_delete, int fail_delete)
2345 char *const name = xstrdup (filename);
2349 struct temp_file *temp;
2350 for (temp = always_delete_queue; temp; temp = temp->next)
2351 if (! strcmp (name, temp->name))
2354 temp = XNEW (struct temp_file);
2355 temp->next = always_delete_queue;
2357 always_delete_queue = temp;
2364 struct temp_file *temp;
2365 for (temp = failure_delete_queue; temp; temp = temp->next)
2366 if (! strcmp (name, temp->name))
2369 temp = XNEW (struct temp_file);
2370 temp->next = failure_delete_queue;
2372 failure_delete_queue = temp;
2378 /* Delete all the temporary files whose names we previously recorded. */
2380 #ifndef DELETE_IF_ORDINARY
2381 #define DELETE_IF_ORDINARY(NAME,ST,VERBOSE_FLAG) \
2384 if (stat (NAME, &ST) >= 0 && S_ISREG (ST.st_mode)) \
2385 if (unlink (NAME) < 0) \
2387 perror_with_name (NAME); \
2392 delete_if_ordinary (const char *name)
2398 printf ("Delete %s? (y or n) ", name);
2402 while ((c = getchar ()) != '\n' && c != EOF)
2405 if (i == 'y' || i == 'Y')
2407 DELETE_IF_ORDINARY (name, st, verbose_flag);
2411 delete_temp_files (void)
2413 struct temp_file *temp;
2415 for (temp = always_delete_queue; temp; temp = temp->next)
2416 delete_if_ordinary (temp->name);
2417 always_delete_queue = 0;
2420 /* Delete all the files to be deleted on error. */
2423 delete_failure_queue (void)
2425 struct temp_file *temp;
2427 for (temp = failure_delete_queue; temp; temp = temp->next)
2428 delete_if_ordinary (temp->name);
2432 clear_failure_queue (void)
2434 failure_delete_queue = 0;
2437 /* Call CALLBACK for each path in PATHS, breaking out early if CALLBACK
2439 If DO_MULTI is true iterate over the paths twice, first with multilib
2440 suffix then without, otherwise iterate over the paths once without
2441 adding a multilib suffix. When DO_MULTI is true, some attempt is made
2442 to avoid visiting the same path twice, but we could do better. For
2443 instance, /usr/lib/../lib is considered different from /usr/lib.
2444 At least EXTRA_SPACE chars past the end of the path passed to
2445 CALLBACK are available for use by the callback.
2446 CALLBACK_INFO allows extra parameters to be passed to CALLBACK.
2448 Returns the value returned by CALLBACK. */
2451 for_each_path (const struct path_prefix *paths,
2454 void *(*callback) (char *, void *),
2455 void *callback_info)
2457 struct prefix_list *pl;
2458 const char *multi_dir = NULL;
2459 const char *multi_os_dir = NULL;
2460 const char *multi_suffix;
2461 const char *just_multi_suffix;
2464 bool skip_multi_dir = false;
2465 bool skip_multi_os_dir = false;
2467 multi_suffix = machine_suffix;
2468 just_multi_suffix = just_machine_suffix;
2469 if (do_multi && multilib_dir && strcmp (multilib_dir, ".") != 0)
2471 multi_dir = concat (multilib_dir, dir_separator_str, NULL);
2472 multi_suffix = concat (multi_suffix, multi_dir, NULL);
2473 just_multi_suffix = concat (just_multi_suffix, multi_dir, NULL);
2475 if (do_multi && multilib_os_dir && strcmp (multilib_os_dir, ".") != 0)
2476 multi_os_dir = concat (multilib_os_dir, dir_separator_str, NULL);
2480 size_t multi_dir_len = 0;
2481 size_t multi_os_dir_len = 0;
2483 size_t just_suffix_len;
2487 multi_dir_len = strlen (multi_dir);
2489 multi_os_dir_len = strlen (multi_os_dir);
2490 suffix_len = strlen (multi_suffix);
2491 just_suffix_len = strlen (just_multi_suffix);
2495 len = paths->max_len + extra_space + 1;
2496 if (suffix_len > multi_os_dir_len)
2499 len += multi_os_dir_len;
2500 path = XNEWVEC (char, len);
2503 for (pl = paths->plist; pl != 0; pl = pl->next)
2505 len = strlen (pl->prefix);
2506 memcpy (path, pl->prefix, len);
2508 /* Look first in MACHINE/VERSION subdirectory. */
2509 if (!skip_multi_dir)
2511 memcpy (path + len, multi_suffix, suffix_len + 1);
2512 ret = callback (path, callback_info);
2517 /* Some paths are tried with just the machine (ie. target)
2518 subdir. This is used for finding as, ld, etc. */
2520 && pl->require_machine_suffix == 2)
2522 memcpy (path + len, just_multi_suffix, just_suffix_len + 1);
2523 ret = callback (path, callback_info);
2528 /* Now try the base path. */
2529 if (!pl->require_machine_suffix
2530 && !(pl->os_multilib ? skip_multi_os_dir : skip_multi_dir))
2532 const char *this_multi;
2533 size_t this_multi_len;
2535 if (pl->os_multilib)
2537 this_multi = multi_os_dir;
2538 this_multi_len = multi_os_dir_len;
2542 this_multi = multi_dir;
2543 this_multi_len = multi_dir_len;
2547 memcpy (path + len, this_multi, this_multi_len + 1);
2551 ret = callback (path, callback_info);
2559 if (multi_dir == NULL && multi_os_dir == NULL)
2562 /* Run through the paths again, this time without multilibs.
2563 Don't repeat any we have already seen. */
2566 free (CONST_CAST (char *, multi_dir));
2568 free (CONST_CAST (char *, multi_suffix));
2569 multi_suffix = machine_suffix;
2570 free (CONST_CAST (char *, just_multi_suffix));
2571 just_multi_suffix = just_machine_suffix;
2574 skip_multi_dir = true;
2577 free (CONST_CAST (char *, multi_os_dir));
2578 multi_os_dir = NULL;
2581 skip_multi_os_dir = true;
2586 free (CONST_CAST (char *, multi_dir));
2587 free (CONST_CAST (char *, multi_suffix));
2588 free (CONST_CAST (char *, just_multi_suffix));
2591 free (CONST_CAST (char *, multi_os_dir));
2597 /* Callback for build_search_list. Adds path to obstack being built. */
2599 struct add_to_obstack_info {
2606 add_to_obstack (char *path, void *data)
2608 struct add_to_obstack_info *info = (struct add_to_obstack_info *) data;
2610 if (info->check_dir && !is_directory (path, false))
2613 if (!info->first_time)
2614 obstack_1grow (info->ob, PATH_SEPARATOR);
2616 obstack_grow (info->ob, path, strlen (path));
2618 info->first_time = false;
2622 /* Add or change the value of an environment variable, outputting the
2623 change to standard error if in verbose mode. */
2625 xputenv (const char *string)
2628 notice ("%s\n", string);
2629 putenv (CONST_CAST (char *, string));
2632 /* Build a list of search directories from PATHS.
2633 PREFIX is a string to prepend to the list.
2634 If CHECK_DIR_P is true we ensure the directory exists.
2635 If DO_MULTI is true, multilib paths are output first, then
2637 This is used mostly by putenv_from_prefixes so we use `collect_obstack'.
2638 It is also used by the --print-search-dirs flag. */
2641 build_search_list (const struct path_prefix *paths, const char *prefix,
2642 bool check_dir, bool do_multi)
2644 struct add_to_obstack_info info;
2646 info.ob = &collect_obstack;
2647 info.check_dir = check_dir;
2648 info.first_time = true;
2650 obstack_grow (&collect_obstack, prefix, strlen (prefix));
2651 obstack_1grow (&collect_obstack, '=');
2653 for_each_path (paths, do_multi, 0, add_to_obstack, &info);
2655 obstack_1grow (&collect_obstack, '\0');
2656 return XOBFINISH (&collect_obstack, char *);
2659 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
2663 putenv_from_prefixes (const struct path_prefix *paths, const char *env_var,
2666 xputenv (build_search_list (paths, env_var, true, do_multi));
2669 /* Check whether NAME can be accessed in MODE. This is like access,
2670 except that it never considers directories to be executable. */
2673 access_check (const char *name, int mode)
2679 if (stat (name, &st) < 0
2680 || S_ISDIR (st.st_mode))
2684 return access (name, mode);
2687 /* Callback for find_a_file. Appends the file name to the directory
2688 path. If the resulting file exists in the right mode, return the
2689 full pathname to the file. */
2691 struct file_at_path_info {
2700 file_at_path (char *path, void *data)
2702 struct file_at_path_info *info = (struct file_at_path_info *) data;
2703 size_t len = strlen (path);
2705 memcpy (path + len, info->name, info->name_len);
2706 len += info->name_len;
2708 /* Some systems have a suffix for executable files.
2709 So try appending that first. */
2710 if (info->suffix_len)
2712 memcpy (path + len, info->suffix, info->suffix_len + 1);
2713 if (access_check (path, info->mode) == 0)
2718 if (access_check (path, info->mode) == 0)
2724 /* Search for NAME using the prefix list PREFIXES. MODE is passed to
2725 access to check permissions. If DO_MULTI is true, search multilib
2726 paths then non-multilib paths, otherwise do not search multilib paths.
2727 Return 0 if not found, otherwise return its name, allocated with malloc. */
2730 find_a_file (const struct path_prefix *pprefix, const char *name, int mode,
2733 struct file_at_path_info info;
2735 #ifdef DEFAULT_ASSEMBLER
2736 if (! strcmp (name, "as") && access (DEFAULT_ASSEMBLER, mode) == 0)
2737 return xstrdup (DEFAULT_ASSEMBLER);
2740 #ifdef DEFAULT_LINKER
2741 if (! strcmp(name, "ld") && access (DEFAULT_LINKER, mode) == 0)
2742 return xstrdup (DEFAULT_LINKER);
2745 /* Determine the filename to execute (special case for absolute paths). */
2747 if (IS_ABSOLUTE_PATH (name))
2749 if (access (name, mode) == 0)
2750 return xstrdup (name);
2756 info.suffix = (mode & X_OK) != 0 ? HOST_EXECUTABLE_SUFFIX : "";
2757 info.name_len = strlen (info.name);
2758 info.suffix_len = strlen (info.suffix);
2761 return (char*) for_each_path (pprefix, do_multi,
2762 info.name_len + info.suffix_len,
2763 file_at_path, &info);
2766 /* Ranking of prefixes in the sort list. -B prefixes are put before
2769 enum path_prefix_priority
2771 PREFIX_PRIORITY_B_OPT,
2772 PREFIX_PRIORITY_LAST
2775 /* Add an entry for PREFIX in PLIST. The PLIST is kept in ascending
2776 order according to PRIORITY. Within each PRIORITY, new entries are
2779 If WARN is nonzero, we will warn if no file is found
2780 through this prefix. WARN should point to an int
2781 which will be set to 1 if this entry is used.
2783 COMPONENT is the value to be passed to update_path.
2785 REQUIRE_MACHINE_SUFFIX is 1 if this prefix can't be used without
2786 the complete value of machine_suffix.
2787 2 means try both machine_suffix and just_machine_suffix. */
2790 add_prefix (struct path_prefix *pprefix, const char *prefix,
2791 const char *component, /* enum prefix_priority */ int priority,
2792 int require_machine_suffix, int os_multilib)
2794 struct prefix_list *pl, **prev;
2797 for (prev = &pprefix->plist;
2798 (*prev) != NULL && (*prev)->priority <= priority;
2799 prev = &(*prev)->next)
2802 /* Keep track of the longest prefix. */
2804 prefix = update_path (prefix, component);
2805 len = strlen (prefix);
2806 if (len > pprefix->max_len)
2807 pprefix->max_len = len;
2809 pl = XNEW (struct prefix_list);
2810 pl->prefix = prefix;
2811 pl->require_machine_suffix = require_machine_suffix;
2812 pl->priority = priority;
2813 pl->os_multilib = os_multilib;
2815 /* Insert after PREV. */
2820 /* Same as add_prefix, but prepending target_system_root to prefix. */
2821 /* The target_system_root prefix has been relocated by gcc_exec_prefix. */
2823 add_sysrooted_prefix (struct path_prefix *pprefix, const char *prefix,
2824 const char *component,
2825 /* enum prefix_priority */ int priority,
2826 int require_machine_suffix, int os_multilib)
2828 if (!IS_ABSOLUTE_PATH (prefix))
2829 fatal ("system path '%s' is not absolute", prefix);
2831 if (target_system_root)
2833 if (target_sysroot_suffix)
2834 prefix = concat (target_sysroot_suffix, prefix, NULL);
2835 prefix = concat (target_system_root, prefix, NULL);
2837 /* We have to override this because GCC's notion of sysroot
2838 moves along with GCC. */
2842 add_prefix (pprefix, prefix, component, priority,
2843 require_machine_suffix, os_multilib);
2846 /* Execute the command specified by the arguments on the current line of spec.
2847 When using pipes, this includes several piped-together commands
2848 with `|' between them.
2850 Return 0 if successful, -1 if failed. */
2856 int n_commands; /* # of command. */
2858 struct pex_obj *pex;
2861 const char *prog; /* program name. */
2862 const char **argv; /* vector of args. */
2865 struct command *commands; /* each command buffer with above info. */
2867 gcc_assert (!processing_spec_function);
2871 string = find_a_file (&exec_prefixes, argbuf[0], X_OK, false);
2872 argbuf[0] = (string) ? string : argbuf[0];
2873 insert_wrapper (wrapper_string);
2876 /* Count # of piped commands. */
2877 for (n_commands = 1, i = 0; i < argbuf_index; i++)
2878 if (strcmp (argbuf[i], "|") == 0)
2881 /* Get storage for each command. */
2882 commands = (struct command *) alloca (n_commands * sizeof (struct command));
2884 /* Split argbuf into its separate piped processes,
2885 and record info about each one.
2886 Also search for the programs that are to be run. */
2888 commands[0].prog = argbuf[0]; /* first command. */
2889 commands[0].argv = &argbuf[0];
2891 if (!wrapper_string)
2893 string = find_a_file (&exec_prefixes, commands[0].prog, X_OK, false);
2894 commands[0].argv[0] = (string) ? string : commands[0].argv[0];
2897 for (n_commands = 1, i = 0; i < argbuf_index; i++)
2898 if (strcmp (argbuf[i], "|") == 0)
2899 { /* each command. */
2900 #if defined (__MSDOS__) || defined (OS2) || defined (VMS)
2901 fatal ("-pipe not supported");
2903 argbuf[i] = 0; /* termination of command args. */
2904 commands[n_commands].prog = argbuf[i + 1];
2905 commands[n_commands].argv = &argbuf[i + 1];
2906 string = find_a_file (&exec_prefixes, commands[n_commands].prog,
2909 commands[n_commands].argv[0] = string;
2913 argbuf[argbuf_index] = 0;
2915 /* If -v, print what we are about to do, and maybe query. */
2919 /* For help listings, put a blank line between sub-processes. */
2920 if (print_help_list)
2921 fputc ('\n', stderr);
2923 /* Print each piped command as a separate line. */
2924 for (i = 0; i < n_commands; i++)
2926 const char *const *j;
2928 if (verbose_only_flag)
2930 for (j = commands[i].argv; *j; j++)
2933 fprintf (stderr, " \"");
2934 for (p = *j; *p; ++p)
2936 if (*p == '"' || *p == '\\' || *p == '$')
2937 fputc ('\\', stderr);
2940 fputc ('"', stderr);
2944 for (j = commands[i].argv; *j; j++)
2945 fprintf (stderr, " %s", *j);
2947 /* Print a pipe symbol after all but the last command. */
2948 if (i + 1 != n_commands)
2949 fprintf (stderr, " |");
2950 fprintf (stderr, "\n");
2953 if (verbose_only_flag != 0)
2955 /* verbose_only_flag should act as if the spec was
2956 executed, so increment execution_count before
2957 returning. This prevents spurious warnings about
2958 unused linker input files, etc. */
2963 notice ("\nGo ahead? (y or n) ");
2967 while (getchar () != '\n')
2970 if (i != 'y' && i != 'Y')
2975 #ifdef ENABLE_VALGRIND_CHECKING
2976 /* Run the each command through valgrind. To simplify prepending the
2977 path to valgrind and the option "-q" (for quiet operation unless
2978 something triggers), we allocate a separate argv array. */
2980 for (i = 0; i < n_commands; i++)
2986 for (argc = 0; commands[i].argv[argc] != NULL; argc++)
2989 argv = XALLOCAVEC (const char *, argc + 3);
2991 argv[0] = VALGRIND_PATH;
2993 for (j = 2; j < argc + 2; j++)
2994 argv[j] = commands[i].argv[j - 2];
2997 commands[i].argv = argv;
2998 commands[i].prog = argv[0];
3002 /* Run each piped subprocess. */
3004 pex = pex_init (PEX_USE_PIPES | (report_times ? PEX_RECORD_TIMES : 0),
3005 programname, temp_filename);
3007 pfatal_with_name (_("pex_init failed"));
3009 for (i = 0; i < n_commands; i++)
3013 const char *string = commands[i].argv[0];
3015 errmsg = pex_run (pex,
3016 ((i + 1 == n_commands ? PEX_LAST : 0)
3017 | (string == commands[i].prog ? PEX_SEARCH : 0)),
3018 string, CONST_CAST (char **, commands[i].argv),
3027 pfatal_with_name (errmsg);
3031 if (string != commands[i].prog)
3032 free (CONST_CAST (char *, string));
3037 /* Wait for all the subprocesses to finish. */
3041 struct pex_time *times = NULL;
3044 statuses = (int *) alloca (n_commands * sizeof (int));
3045 if (!pex_get_status (pex, n_commands, statuses))
3046 pfatal_with_name (_("failed to get exit status"));
3050 times = (struct pex_time *) alloca (n_commands * sizeof (struct pex_time));
3051 if (!pex_get_times (pex, n_commands, times))
3052 pfatal_with_name (_("failed to get process times"));
3057 for (i = 0; i < n_commands; ++i)
3059 int status = statuses[i];
3061 if (WIFSIGNALED (status))
3064 /* SIGPIPE is a special case. It happens in -pipe mode
3065 when the compiler dies before the preprocessor is done,
3066 or the assembler dies before the compiler is done.
3067 There's generally been an error already, and this is
3068 just fallout. So don't generate another error unless
3069 we would otherwise have succeeded. */
3070 if (WTERMSIG (status) == SIGPIPE
3071 && (signal_count || greatest_status >= MIN_FATAL_STATUS))
3079 Internal error: %s (program %s)\n\
3080 Please submit a full bug report.\n\
3081 See %s for instructions.",
3082 strsignal (WTERMSIG (status)), commands[i].prog,
3085 else if (WIFEXITED (status)
3086 && WEXITSTATUS (status) >= MIN_FATAL_STATUS)
3088 if (WEXITSTATUS (status) > greatest_status)
3089 greatest_status = WEXITSTATUS (status);
3095 struct pex_time *pt = ×[i];
3098 ut = ((double) pt->user_seconds
3099 + (double) pt->user_microseconds / 1.0e6);
3100 st = ((double) pt->system_seconds
3101 + (double) pt->system_microseconds / 1.0e6);
3104 notice ("# %s %.2f %.2f\n", commands[i].prog, ut, st);
3112 /* Find all the switches given to us
3113 and make a vector describing them.
3114 The elements of the vector are strings, one per switch given.
3115 If a switch uses following arguments, then the `part1' field
3116 is the switch itself and the `args' field
3117 is a null-terminated vector containing the following arguments.
3118 Bits in the `live_cond' field are:
3119 SWITCH_LIVE to indicate this switch is true in a conditional spec.
3120 SWITCH_FALSE to indicate this switch is overridden by a later switch.
3121 SWITCH_IGNORE to indicate this switch should be ignored (used in %<S).
3122 The `validated' field is nonzero if any spec has looked at this switch;
3123 if it remains zero at the end of the run, it must be meaningless. */
3125 #define SWITCH_LIVE 0x1
3126 #define SWITCH_FALSE 0x2
3127 #define SWITCH_IGNORE 0x4
3133 unsigned int live_cond;
3134 unsigned char validated;
3135 unsigned char ordering;
3138 static struct switchstr *switches;
3140 static int n_switches;
3142 /* Language is one of three things:
3144 1) The name of a real programming language.
3145 2) NULL, indicating that no one has figured out
3147 3) '*', indicating that the file should be passed
3152 const char *language;
3153 struct compiler *incompiler;
3158 /* Also a vector of input files specified. */
3160 static struct infile *infiles;
3164 /* True if multiple input files are being compiled to a single
3167 static bool combine_inputs;
3169 /* This counts the number of libraries added by lang_specific_driver, so that
3170 we can tell if there were any user supplied any files or libraries. */
3172 static int added_libraries;
3174 /* And a vector of corresponding output files is made up later. */
3176 const char **outfiles;
3178 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3180 /* Convert NAME to a new name if it is the standard suffix. DO_EXE
3181 is true if we should look for an executable suffix. DO_OBJ
3182 is true if we should look for an object suffix. */
3185 convert_filename (const char *name, int do_exe ATTRIBUTE_UNUSED,
3186 int do_obj ATTRIBUTE_UNUSED)
3188 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3196 len = strlen (name);
3198 #ifdef HAVE_TARGET_OBJECT_SUFFIX
3199 /* Convert x.o to x.obj if TARGET_OBJECT_SUFFIX is ".obj". */
3200 if (do_obj && len > 2
3201 && name[len - 2] == '.'
3202 && name[len - 1] == 'o')
3204 obstack_grow (&obstack, name, len - 2);
3205 obstack_grow0 (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX));
3206 name = XOBFINISH (&obstack, const char *);
3210 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3211 /* If there is no filetype, make it the executable suffix (which includes
3212 the "."). But don't get confused if we have just "-o". */
3213 if (! do_exe || TARGET_EXECUTABLE_SUFFIX[0] == 0 || (len == 2 && name[0] == '-'))
3216 for (i = len - 1; i >= 0; i--)
3217 if (IS_DIR_SEPARATOR (name[i]))
3220 for (i++; i < len; i++)
3224 obstack_grow (&obstack, name, len);
3225 obstack_grow0 (&obstack, TARGET_EXECUTABLE_SUFFIX,
3226 strlen (TARGET_EXECUTABLE_SUFFIX));
3227 name = XOBFINISH (&obstack, const char *);
3234 /* Display the command line switches accepted by gcc. */
3238 printf (_("Usage: %s [options] file...\n"), programname);
3239 fputs (_("Options:\n"), stdout);
3241 fputs (_(" -pass-exit-codes Exit with highest error code from a phase\n"), stdout);
3242 fputs (_(" --help Display this information\n"), stdout);
3243 fputs (_(" --target-help Display target specific command line options\n"), stdout);
3244 fputs (_(" --help={target|optimizers|warnings|params|[^]{joined|separate|undocumented}}[,...]\n"), stdout);
3245 fputs (_(" Display specific types of command line options\n"), stdout);
3247 fputs (_(" (Use '-v --help' to display command line options of sub-processes)\n"), stdout);
3248 fputs (_(" --version Display compiler version information\n"), stdout);
3249 fputs (_(" -dumpspecs Display all of the built in spec strings\n"), stdout);
3250 fputs (_(" -dumpversion Display the version of the compiler\n"), stdout);
3251 fputs (_(" -dumpmachine Display the compiler's target processor\n"), stdout);
3252 fputs (_(" -print-search-dirs Display the directories in the compiler's search path\n"), stdout);
3253 fputs (_(" -print-libgcc-file-name Display the name of the compiler's companion library\n"), stdout);
3254 fputs (_(" -print-file-name=<lib> Display the full path to library <lib>\n"), stdout);
3255 fputs (_(" -print-prog-name=<prog> Display the full path to compiler component <prog>\n"), stdout);
3256 fputs (_(" -print-multi-directory Display the root directory for versions of libgcc\n"), stdout);
3258 -print-multi-lib Display the mapping between command line options and\n\
3259 multiple library search directories\n"), stdout);
3260 fputs (_(" -print-multi-os-directory Display the relative path to OS libraries\n"), stdout);
3261 fputs (_(" -print-sysroot Display the target libraries directory\n"), stdout);
3262 fputs (_(" -print-sysroot-headers-suffix Display the sysroot suffix used to find headers\n"), stdout);
3263 fputs (_(" -Wa,<options> Pass comma-separated <options> on to the assembler\n"), stdout);
3264 fputs (_(" -Wp,<options> Pass comma-separated <options> on to the preprocessor\n"), stdout);
3265 fputs (_(" -Wl,<options> Pass comma-separated <options> on to the linker\n"), stdout);
3266 fputs (_(" -Xassembler <arg> Pass <arg> on to the assembler\n"), stdout);
3267 fputs (_(" -Xpreprocessor <arg> Pass <arg> on to the preprocessor\n"), stdout);
3268 fputs (_(" -Xlinker <arg> Pass <arg> on to the linker\n"), stdout);
3269 fputs (_(" -combine Pass multiple source files to compiler at once\n"), stdout);
3270 fputs (_(" -save-temps Do not delete intermediate files\n"), stdout);
3271 fputs (_(" -save-temps=<arg> Do not delete intermediate files\n"), stdout);
3272 fputs (_(" -pipe Use pipes rather than intermediate files\n"), stdout);
3273 fputs (_(" -time Time the execution of each subprocess\n"), stdout);
3274 fputs (_(" -specs=<file> Override built-in specs with the contents of <file>\n"), stdout);
3275 fputs (_(" -std=<standard> Assume that the input sources are for <standard>\n"), stdout);
3277 --sysroot=<directory> Use <directory> as the root directory for headers\n\
3278 and libraries\n"), stdout);
3279 fputs (_(" -B <directory> Add <directory> to the compiler's search paths\n"), stdout);
3280 fputs (_(" -b <machine> Run gcc for target <machine>, if installed\n"), stdout);
3281 fputs (_(" -V <version> Run gcc version number <version>, if installed\n"), stdout);
3282 fputs (_(" -v Display the programs invoked by the compiler\n"), stdout);
3283 fputs (_(" -### Like -v but options quoted and commands not executed\n"), stdout);
3284 fputs (_(" -E Preprocess only; do not compile, assemble or link\n"), stdout);
3285 fputs (_(" -S Compile only; do not assemble or link\n"), stdout);
3286 fputs (_(" -c Compile and assemble, but do not link\n"), stdout);
3287 fputs (_(" -o <file> Place the output into <file>\n"), stdout);
3289 -x <language> Specify the language of the following input files\n\
3290 Permissible languages include: c c++ assembler none\n\
3291 'none' means revert to the default behavior of\n\
3292 guessing the language based on the file's extension\n\
3296 \nOptions starting with -g, -f, -m, -O, -W, or --param are automatically\n\
3297 passed on to the various sub-processes invoked by %s. In order to pass\n\
3298 other options on to these processes the -W<letter> options must be used.\n\
3301 /* The rest of the options are displayed by invocations of the various
3306 add_preprocessor_option (const char *option, int len)
3308 n_preprocessor_options++;
3310 if (! preprocessor_options)
3311 preprocessor_options = XNEWVEC (char *, n_preprocessor_options);
3313 preprocessor_options = XRESIZEVEC (char *, preprocessor_options,
3314 n_preprocessor_options);
3316 preprocessor_options [n_preprocessor_options - 1] =
3317 save_string (option, len);
3321 add_assembler_option (const char *option, int len)
3323 n_assembler_options++;
3325 if (! assembler_options)
3326 assembler_options = XNEWVEC (char *, n_assembler_options);
3328 assembler_options = XRESIZEVEC (char *, assembler_options,
3329 n_assembler_options);
3331 assembler_options [n_assembler_options - 1] = save_string (option, len);
3335 add_linker_option (const char *option, int len)
3339 if (! linker_options)
3340 linker_options = XNEWVEC (char *, n_linker_options);
3342 linker_options = XRESIZEVEC (char *, linker_options, n_linker_options);
3344 linker_options [n_linker_options - 1] = save_string (option, len);
3347 /* Create the vector `switches' and its contents.
3348 Store its length in `n_switches'. */
3351 process_command (int argc, const char **argv)
3356 const char *spec_lang = 0;
3357 int last_language_n_infiles;
3358 int lang_n_infiles = 0;
3359 #ifdef MODIFY_TARGET_NAME
3360 int is_modify_target_name;
3363 const char *tooldir_prefix;
3365 GET_ENVIRONMENT (gcc_exec_prefix, "GCC_EXEC_PREFIX");
3369 added_libraries = 0;
3371 /* Figure compiler version from version string. */
3373 compiler_version = temp1 = xstrdup (version_string);
3375 for (; *temp1; ++temp1)
3384 /* If there is a -V or -b option (or both), process it now, before
3385 trying to interpret the rest of the command line.
3386 Use heuristic that all configuration names must have at least
3387 one dash '-'. This allows us to pass options starting with -b. */
3388 if (argc > 1 && argv[1][0] == '-'
3389 && (argv[1][1] == 'V'
3390 || (argv[1][1] == 'b'
3391 && (argv[1][2] == '\0'
3392 || NULL != strchr (argv[1] + 2, '-')))))
3394 const char *new_version = DEFAULT_TARGET_VERSION;
3395 const char *new_machine = DEFAULT_TARGET_MACHINE;
3396 const char *progname = argv[0];
3404 while (argc > 1 && argv[1][0] == '-'
3405 && (argv[1][1] == 'V'
3406 || (argv[1][1] == 'b'
3407 && (argv[1][2] == '\0'
3408 || NULL != strchr (argv[1] + 2, '-')))))
3410 char opt = argv[1][1];
3412 if (argv[1][2] != '\0')
3425 fatal ("'-%c' option must have argument", opt);
3432 for (baselen = strlen (progname); baselen > 0; baselen--)
3433 if (IS_DIR_SEPARATOR (progname[baselen-1]))
3435 new_argv0 = XDUPVAR (char, progname, baselen,
3436 baselen + concat_length (new_version, new_machine,
3437 "-gcc-", NULL) + 1);
3438 strcpy (new_argv0 + baselen, new_machine);
3439 strcat (new_argv0, "-gcc-");
3440 strcat (new_argv0, new_version);
3442 new_argv = XDUPVEC (char *, argv, argc + 1);
3443 new_argv[0] = new_argv0;
3445 errmsg = pex_one (PEX_SEARCH, new_argv0, new_argv, progname, NULL,
3446 NULL, &status, &err);
3451 fatal ("couldn't run '%s': %s", new_argv0, errmsg);
3453 fatal ("couldn't run '%s': %s: %s", new_argv0, errmsg,
3459 /* Set up the default search paths. If there is no GCC_EXEC_PREFIX,
3460 see if we can create it from the pathname specified in argv[0]. */
3462 gcc_libexec_prefix = standard_libexec_prefix;
3464 /* FIXME: make_relative_prefix doesn't yet work for VMS. */
3465 if (!gcc_exec_prefix)
3467 gcc_exec_prefix = make_relative_prefix (argv[0], standard_bindir_prefix,
3468 standard_exec_prefix);
3469 gcc_libexec_prefix = make_relative_prefix (argv[0],
3470 standard_bindir_prefix,
3471 standard_libexec_prefix);
3472 if (gcc_exec_prefix)
3473 xputenv (concat ("GCC_EXEC_PREFIX=", gcc_exec_prefix, NULL));
3477 /* make_relative_prefix requires a program name, but
3478 GCC_EXEC_PREFIX is typically a directory name with a trailing
3479 / (which is ignored by make_relative_prefix), so append a
3481 char *tmp_prefix = concat (gcc_exec_prefix, "gcc", NULL);
3482 gcc_libexec_prefix = make_relative_prefix (tmp_prefix,
3483 standard_exec_prefix,
3484 standard_libexec_prefix);
3486 /* The path is unrelocated, so fallback to the original setting. */
3487 if (!gcc_libexec_prefix)
3488 gcc_libexec_prefix = standard_libexec_prefix;
3494 /* From this point onward, gcc_exec_prefix is non-null if the toolchain
3495 is relocated. The toolchain was either relocated using GCC_EXEC_PREFIX
3496 or an automatically created GCC_EXEC_PREFIX from argv[0]. */
3498 if (gcc_exec_prefix)
3500 int len = strlen (gcc_exec_prefix);
3502 if (len > (int) sizeof ("/lib/gcc/") - 1
3503 && (IS_DIR_SEPARATOR (gcc_exec_prefix[len-1])))
3505 temp = gcc_exec_prefix + len - sizeof ("/lib/gcc/") + 1;
3506 if (IS_DIR_SEPARATOR (*temp)
3507 && strncmp (temp + 1, "lib", 3) == 0
3508 && IS_DIR_SEPARATOR (temp[4])
3509 && strncmp (temp + 5, "gcc", 3) == 0)
3510 len -= sizeof ("/lib/gcc/") - 1;
3513 set_std_prefix (gcc_exec_prefix, len);
3514 add_prefix (&exec_prefixes, gcc_libexec_prefix, "GCC",
3515 PREFIX_PRIORITY_LAST, 0, 0);
3516 add_prefix (&startfile_prefixes, gcc_exec_prefix, "GCC",
3517 PREFIX_PRIORITY_LAST, 0, 0);
3520 /* COMPILER_PATH and LIBRARY_PATH have values
3521 that are lists of directory names with colons. */
3523 GET_ENVIRONMENT (temp, "COMPILER_PATH");
3526 const char *startp, *endp;
3527 char *nstore = (char *) alloca (strlen (temp) + 3);
3529 startp = endp = temp;
3532 if (*endp == PATH_SEPARATOR || *endp == 0)
3534 strncpy (nstore, startp, endp - startp);
3536 strcpy (nstore, concat (".", dir_separator_str, NULL));
3537 else if (!IS_DIR_SEPARATOR (endp[-1]))
3539 nstore[endp - startp] = DIR_SEPARATOR;
3540 nstore[endp - startp + 1] = 0;
3543 nstore[endp - startp] = 0;
3544 add_prefix (&exec_prefixes, nstore, 0,
3545 PREFIX_PRIORITY_LAST, 0, 0);
3546 add_prefix (&include_prefixes, nstore, 0,
3547 PREFIX_PRIORITY_LAST, 0, 0);
3550 endp = startp = endp + 1;
3557 GET_ENVIRONMENT (temp, LIBRARY_PATH_ENV);
3558 if (temp && *cross_compile == '0')
3560 const char *startp, *endp;
3561 char *nstore = (char *) alloca (strlen (temp) + 3);
3563 startp = endp = temp;
3566 if (*endp == PATH_SEPARATOR || *endp == 0)
3568 strncpy (nstore, startp, endp - startp);
3570 strcpy (nstore, concat (".", dir_separator_str, NULL));
3571 else if (!IS_DIR_SEPARATOR (endp[-1]))
3573 nstore[endp - startp] = DIR_SEPARATOR;
3574 nstore[endp - startp + 1] = 0;
3577 nstore[endp - startp] = 0;
3578 add_prefix (&startfile_prefixes, nstore, NULL,
3579 PREFIX_PRIORITY_LAST, 0, 1);
3582 endp = startp = endp + 1;
3589 /* Use LPATH like LIBRARY_PATH (for the CMU build program). */
3590 GET_ENVIRONMENT (temp, "LPATH");
3591 if (temp && *cross_compile == '0')
3593 const char *startp, *endp;
3594 char *nstore = (char *) alloca (strlen (temp) + 3);
3596 startp = endp = temp;
3599 if (*endp == PATH_SEPARATOR || *endp == 0)
3601 strncpy (nstore, startp, endp - startp);
3603 strcpy (nstore, concat (".", dir_separator_str, NULL));
3604 else if (!IS_DIR_SEPARATOR (endp[-1]))
3606 nstore[endp - startp] = DIR_SEPARATOR;
3607 nstore[endp - startp + 1] = 0;
3610 nstore[endp - startp] = 0;
3611 add_prefix (&startfile_prefixes, nstore, NULL,
3612 PREFIX_PRIORITY_LAST, 0, 1);
3615 endp = startp = endp + 1;
3622 /* Convert new-style -- options to old-style. */
3623 translate_options (&argc, (const char *const **) &argv);
3625 /* Do language-specific adjustment/addition of flags. */
3626 lang_specific_driver (&argc, (const char *const **) &argv, &added_libraries);
3628 /* Scan argv twice. Here, the first time, just count how many switches
3629 there will be in their vector, and how many input files in theirs.
3630 Here we also parse the switches that cc itself uses (e.g. -v). */
3632 for (i = 1; i < argc; i++)
3634 if (! strcmp (argv[i], "-dumpspecs"))
3636 struct spec_list *sl;
3638 for (sl = specs; sl; sl = sl->next)
3639 printf ("*%s:\n%s\n\n", sl->name, *(sl->ptr_spec));
3640 if (link_command_spec)
3641 printf ("*link_command:\n%s\n\n", link_command_spec);
3644 else if (! strcmp (argv[i], "-dumpversion"))
3646 printf ("%s\n", spec_version);
3649 else if (! strcmp (argv[i], "-dumpmachine"))
3651 printf ("%s\n", spec_machine);
3654 else if (strcmp (argv[i], "-fversion") == 0)
3656 /* translate_options () has turned --version into -fversion. */
3659 /* We will be passing a dummy file on to the sub-processes. */
3663 /* CPP driver cannot obtain switch from cc1_options. */
3665 add_preprocessor_option ("--version", strlen ("--version"));
3666 add_assembler_option ("--version", strlen ("--version"));
3667 add_linker_option ("--version", strlen ("--version"));
3669 else if (strcmp (argv[i], "-fhelp") == 0)
3671 /* translate_options () has turned --help into -fhelp. */
3672 print_help_list = 1;
3674 /* We will be passing a dummy file on to the sub-processes. */
3678 /* CPP driver cannot obtain switch from cc1_options. */
3680 add_preprocessor_option ("--help", 6);
3681 add_assembler_option ("--help", 6);
3682 add_linker_option ("--help", 6);
3684 else if (strncmp (argv[i], "-fhelp=", 7) == 0)
3686 /* translate_options () has turned --help into -fhelp. */
3687 print_subprocess_help = 2;
3689 /* We will be passing a dummy file on to the sub-processes. */
3693 else if (strcmp (argv[i], "-ftarget-help") == 0)
3695 /* translate_options() has turned --target-help into -ftarget-help. */
3696 print_subprocess_help = 1;
3698 /* We will be passing a dummy file on to the sub-processes. */
3702 /* CPP driver cannot obtain switch from cc1_options. */
3704 add_preprocessor_option ("--target-help", 13);
3705 add_assembler_option ("--target-help", 13);
3706 add_linker_option ("--target-help", 13);
3708 else if (! strcmp (argv[i], "-pass-exit-codes"))
3710 pass_exit_codes = 1;
3713 else if (! strcmp (argv[i], "-print-search-dirs"))
3714 print_search_dirs = 1;
3715 else if (! strcmp (argv[i], "-print-libgcc-file-name"))
3716 print_file_name = "libgcc.a";
3717 else if (! strncmp (argv[i], "-print-file-name=", 17))
3718 print_file_name = argv[i] + 17;
3719 else if (! strncmp (argv[i], "-print-prog-name=", 17))
3720 print_prog_name = argv[i] + 17;
3721 else if (! strcmp (argv[i], "-print-multi-lib"))
3722 print_multi_lib = 1;
3723 else if (! strcmp (argv[i], "-print-multi-directory"))
3724 print_multi_directory = 1;
3725 else if (! strcmp (argv[i], "-print-sysroot"))
3727 else if (! strcmp (argv[i], "-print-multi-os-directory"))
3728 print_multi_os_directory = 1;
3729 else if (! strcmp (argv[i], "-print-sysroot-headers-suffix"))
3730 print_sysroot_headers_suffix = 1;
3731 else if (! strncmp (argv[i], "-Wa,", 4))
3734 /* Pass the rest of this option to the assembler. */
3736 /* Split the argument at commas. */
3738 for (j = 4; argv[i][j]; j++)
3739 if (argv[i][j] == ',')
3741 add_assembler_option (argv[i] + prev, j - prev);
3745 /* Record the part after the last comma. */
3746 add_assembler_option (argv[i] + prev, j - prev);
3748 else if (! strncmp (argv[i], "-Wp,", 4))
3751 /* Pass the rest of this option to the preprocessor. */
3753 /* Split the argument at commas. */
3755 for (j = 4; argv[i][j]; j++)
3756 if (argv[i][j] == ',')
3758 add_preprocessor_option (argv[i] + prev, j - prev);
3762 /* Record the part after the last comma. */
3763 add_preprocessor_option (argv[i] + prev, j - prev);
3765 else if (argv[i][0] == '+' && argv[i][1] == 'e')
3766 /* The +e options to the C++ front-end. */
3768 else if (strncmp (argv[i], "-Wl,", 4) == 0)
3771 /* Split the argument at commas. */
3772 for (j = 3; argv[i][j]; j++)
3773 n_infiles += (argv[i][j] == ',');
3775 else if (strcmp (argv[i], "-Xlinker") == 0)
3778 fatal ("argument to '-Xlinker' is missing");
3783 else if (strcmp (argv[i], "-Xpreprocessor") == 0)
3786 fatal ("argument to '-Xpreprocessor' is missing");
3788 add_preprocessor_option (argv[i+1], strlen (argv[i+1]));
3790 else if (strcmp (argv[i], "-Xassembler") == 0)
3793 fatal ("argument to '-Xassembler' is missing");
3795 add_assembler_option (argv[i+1], strlen (argv[i+1]));
3797 else if (strcmp (argv[i], "-l") == 0)
3800 fatal ("argument to '-l' is missing");
3805 else if (strncmp (argv[i], "-l", 2) == 0)
3807 else if (strcmp (argv[i], "-save-temps") == 0)
3809 save_temps_flag = SAVE_TEMPS_CWD;
3812 else if (strncmp (argv[i], "-save-temps=", 12) == 0)
3815 if (strcmp (argv[i]+12, "cwd") == 0)
3816 save_temps_flag = SAVE_TEMPS_CWD;
3817 else if (strcmp (argv[i]+12, "obj") == 0
3818 || strcmp (argv[i]+12, "object") == 0)
3819 save_temps_flag = SAVE_TEMPS_OBJ;
3821 fatal ("'%s' is an unknown -save-temps option", argv[i]);
3823 else if (strcmp (argv[i], "-combine") == 0)
3828 else if (strcmp (argv[i], "-specs") == 0)
3830 struct user_specs *user = XNEW (struct user_specs);
3832 fatal ("argument to '-specs' is missing");
3834 user->next = (struct user_specs *) 0;
3835 user->filename = argv[i];
3836 if (user_specs_tail)
3837 user_specs_tail->next = user;
3839 user_specs_head = user;
3840 user_specs_tail = user;
3842 else if (strncmp (argv[i], "-specs=", 7) == 0)
3844 struct user_specs *user = XNEW (struct user_specs);
3845 if (strlen (argv[i]) == 7)
3846 fatal ("argument to '-specs=' is missing");
3848 user->next = (struct user_specs *) 0;
3849 user->filename = argv[i] + 7;
3850 if (user_specs_tail)
3851 user_specs_tail->next = user;
3853 user_specs_head = user;
3854 user_specs_tail = user;
3856 else if (strcmp (argv[i], "-time") == 0)
3858 else if (strcmp (argv[i], "-pipe") == 0)
3860 /* -pipe has to go into the switches array as well as
3865 else if (strcmp (argv[i], "-wrapper") == 0)
3868 fatal ("argument to '-wrapper' is missing");
3870 wrapper_string = argv[i];
3874 else if (strcmp (argv[i], "-###") == 0)
3876 /* This is similar to -v except that there is no execution
3877 of the commands and the echoed arguments are quoted. It
3878 is intended for use in shell scripts to capture the
3879 driver-generated command line. */
3880 verbose_only_flag++;
3883 else if (argv[i][0] == '-' && argv[i][1] != 0)
3885 const char *p = &argv[i][1];
3891 if (p[1] && NULL == strchr (argv[i] + 2, '-'))
3896 fatal ("'-%c' must come at the start of the command line", c);
3904 if (p[1] == 0 && i + 1 == argc)
3905 fatal ("argument to '-B' is missing");
3911 len = strlen (value);
3913 /* Catch the case where the user has forgotten to append a
3914 directory separator to the path. Note, they may be using
3915 -B to add an executable name prefix, eg "i386-elf-", in
3916 order to distinguish between multiple installations of
3917 GCC in the same directory. Hence we must check to see
3918 if appending a directory separator actually makes a
3919 valid directory name. */
3920 if (! IS_DIR_SEPARATOR (value [len - 1])
3921 && is_directory (value, false))
3923 char *tmp = XNEWVEC (char, len + 2);
3924 strcpy (tmp, value);
3925 tmp[len] = DIR_SEPARATOR;
3930 add_prefix (&exec_prefixes, value, NULL,
3931 PREFIX_PRIORITY_B_OPT, 0, 0);
3932 add_prefix (&startfile_prefixes, value, NULL,
3933 PREFIX_PRIORITY_B_OPT, 0, 0);
3934 add_prefix (&include_prefixes, value, NULL,
3935 PREFIX_PRIORITY_B_OPT, 0, 0);
3940 case 'v': /* Print our subcommands and print versions. */
3942 /* If they do anything other than exactly `-v', don't set
3943 verbose_flag; rather, continue on to give the error. */
3961 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3966 /* Forward scan, just in case -S or -c is specified
3973 if (argv[j][0] == '-')
3975 if (SWITCH_CURTAILS_COMPILATION (argv[j][1])
3981 else if ((skip = SWITCH_TAKES_ARG (argv[j][1])))
3982 j += skip - (argv[j][2] != 0);
3983 else if ((skip = WORD_SWITCH_TAKES_ARG (argv[j] + 1)))
3990 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX) || defined(HAVE_TARGET_OBJECT_SUFFIX)
3992 argv[i + 1] = convert_filename (argv[i + 1], ! have_c, 0);
3994 argv[i] = convert_filename (argv[i], ! have_c, 0);
3996 /* Save the output name in case -save-temps=obj was used. */
3997 save_temps_prefix = xstrdup ((p[1] == 0) ? argv[i + 1] : argv[i] + 1);
4003 #ifdef MODIFY_TARGET_NAME
4004 is_modify_target_name = 0;
4006 for (j = 0; j < ARRAY_SIZE (modify_target); j++)
4007 if (! strcmp (argv[i], modify_target[j].sw))
4009 char *new_name = XNEWVEC (char, strlen (modify_target[j].str)
4010 + strlen (spec_machine));
4013 int made_addition = 0;
4015 is_modify_target_name = 1;
4016 for (p = spec_machine, q = new_name; *p != 0; )
4018 if (modify_target[j].add_del == DELETE
4019 && (! strncmp (q, modify_target[j].str,
4020 strlen (modify_target[j].str))))
4021 p += strlen (modify_target[j].str);
4022 else if (modify_target[j].add_del == ADD
4023 && ! made_addition && *p == '-')
4025 for (r = modify_target[j].str; *r != 0; )
4033 spec_machine = new_name;
4036 if (is_modify_target_name)
4042 if (SWITCH_TAKES_ARG (c) > (p[1] != 0))
4043 i += SWITCH_TAKES_ARG (c) - (p[1] != 0);
4044 else if (WORD_SWITCH_TAKES_ARG (p))
4045 i += WORD_SWITCH_TAKES_ARG (p);
4055 /* If -save-temps=obj and -o name, create the prefix to use for %b.
4056 Otherwise just make -save-temps=obj the same as -save-temps=cwd. */
4057 if (save_temps_flag == SAVE_TEMPS_OBJ && save_temps_prefix != NULL)
4059 save_temps_length = strlen (save_temps_prefix);
4060 temp = strrchr (lbasename (save_temps_prefix), '.');
4063 save_temps_length -= strlen (temp);
4064 save_temps_prefix[save_temps_length] = '\0';
4068 else if (save_temps_prefix != NULL)
4070 free (save_temps_prefix);
4071 save_temps_prefix = NULL;
4074 if (save_temps_flag && use_pipes)
4076 /* -save-temps overrides -pipe, so that temp files are produced */
4077 if (save_temps_flag)
4078 error ("warning: -pipe ignored because -save-temps specified");
4082 /* Set up the search paths. We add directories that we expect to
4083 contain GNU Toolchain components before directories specified by
4084 the machine description so that we will find GNU components (like
4085 the GNU assembler) before those of the host system. */
4087 /* If we don't know where the toolchain has been installed, use the
4088 configured-in locations. */
4089 if (!gcc_exec_prefix)
4092 add_prefix (&exec_prefixes, standard_libexec_prefix, "GCC",
4093 PREFIX_PRIORITY_LAST, 1, 0);
4094 add_prefix (&exec_prefixes, standard_libexec_prefix, "BINUTILS",
4095 PREFIX_PRIORITY_LAST, 2, 0);
4096 add_prefix (&exec_prefixes, standard_exec_prefix, "BINUTILS",
4097 PREFIX_PRIORITY_LAST, 2, 0);
4099 add_prefix (&startfile_prefixes, standard_exec_prefix, "BINUTILS",
4100 PREFIX_PRIORITY_LAST, 1, 0);
4103 /* If not cross-compiling, search well-known system locations. */
4104 if (*cross_compile == '0')
4107 add_prefix (&exec_prefixes, standard_exec_prefix_1, "BINUTILS",
4108 PREFIX_PRIORITY_LAST, 2, 0);
4109 add_prefix (&exec_prefixes, standard_exec_prefix_2, "BINUTILS",
4110 PREFIX_PRIORITY_LAST, 2, 0);
4112 add_prefix (&startfile_prefixes, standard_exec_prefix_2, "BINUTILS",
4113 PREFIX_PRIORITY_LAST, 1, 0);
4116 gcc_assert (!IS_ABSOLUTE_PATH (tooldir_base_prefix));
4117 tooldir_prefix = concat (tooldir_base_prefix, spec_machine,
4118 dir_separator_str, NULL);
4120 /* Look for tools relative to the location from which the driver is
4121 running, or, if that is not available, the configured prefix. */
4123 = concat (gcc_exec_prefix ? gcc_exec_prefix : standard_exec_prefix,
4124 spec_machine, dir_separator_str,
4125 spec_version, dir_separator_str, tooldir_prefix, NULL);
4127 add_prefix (&exec_prefixes,
4128 concat (tooldir_prefix, "bin", dir_separator_str, NULL),
4129 "BINUTILS", PREFIX_PRIORITY_LAST, 0, 0);
4130 add_prefix (&startfile_prefixes,
4131 concat (tooldir_prefix, "lib", dir_separator_str, NULL),
4132 "BINUTILS", PREFIX_PRIORITY_LAST, 0, 1);
4134 #if defined(TARGET_SYSTEM_ROOT_RELOCATABLE) && !defined(VMS)
4135 /* If the normal TARGET_SYSTEM_ROOT is inside of $exec_prefix,
4136 then consider it to relocate with the rest of the GCC installation
4137 if GCC_EXEC_PREFIX is set.
4138 ``make_relative_prefix'' is not compiled for VMS, so don't call it. */
4139 if (target_system_root && gcc_exec_prefix)
4141 char *tmp_prefix = make_relative_prefix (argv[0],
4142 standard_bindir_prefix,
4143 target_system_root);
4144 if (tmp_prefix && access_check (tmp_prefix, F_OK) == 0)
4146 target_system_root = tmp_prefix;
4147 target_system_root_changed = 1;
4152 /* More prefixes are enabled in main, after we read the specs file
4153 and determine whether this is cross-compilation or not. */
4155 /* Then create the space for the vectors and scan again. */
4157 switches = XNEWVEC (struct switchstr, n_switches + 1);
4158 infiles = XNEWVEC (struct infile, n_infiles + 1);
4161 last_language_n_infiles = -1;
4163 /* This, time, copy the text of each switch and store a pointer
4164 to the copy in the vector of switches.
4165 Store all the infiles in their vector. */
4167 for (i = 1; i < argc; i++)
4169 /* Just skip the switches that were handled by the preceding loop. */
4170 #ifdef MODIFY_TARGET_NAME
4171 is_modify_target_name = 0;
4173 for (j = 0; j < ARRAY_SIZE (modify_target); j++)
4174 if (! strcmp (argv[i], modify_target[j].sw))
4175 is_modify_target_name = 1;
4177 if (is_modify_target_name)
4181 if (! strncmp (argv[i], "-Wa,", 4))
4183 else if (! strncmp (argv[i], "-Wp,", 4))
4185 else if (! strcmp (argv[i], "-pass-exit-codes"))
4187 else if (! strcmp (argv[i], "-print-search-dirs"))
4189 else if (! strcmp (argv[i], "-print-libgcc-file-name"))
4191 else if (! strncmp (argv[i], "-print-file-name=", 17))
4193 else if (! strncmp (argv[i], "-print-prog-name=", 17))
4195 else if (! strcmp (argv[i], "-print-multi-lib"))
4197 else if (! strcmp (argv[i], "-print-multi-directory"))
4199 else if (! strcmp (argv[i], "-print-sysroot"))
4201 else if (! strcmp (argv[i], "-print-multi-os-directory"))
4203 else if (! strcmp (argv[i], "-print-sysroot-headers-suffix"))
4205 else if (! strncmp (argv[i], "--sysroot=", strlen ("--sysroot=")))
4207 target_system_root = argv[i] + strlen ("--sysroot=");
4208 target_system_root_changed = 1;
4210 else if (argv[i][0] == '+' && argv[i][1] == 'e')
4212 /* Compensate for the +e options to the C++ front-end;
4213 they're there simply for cfront call-compatibility. We do
4214 some magic in default_compilers to pass them down properly.
4215 Note we deliberately start at the `+' here, to avoid passing
4216 -e0 or -e1 down into the linker. */
4217 switches[n_switches].part1 = &argv[i][0];
4218 switches[n_switches].args = 0;
4219 switches[n_switches].live_cond = 0;
4220 switches[n_switches].validated = 0;
4223 else if (strncmp (argv[i], "-Wl,", 4) == 0)
4226 /* Split the argument at commas. */
4228 for (j = 4; argv[i][j]; j++)
4229 if (argv[i][j] == ',')
4231 infiles[n_infiles].language = "*";
4232 infiles[n_infiles++].name
4233 = save_string (argv[i] + prev, j - prev);
4236 /* Record the part after the last comma. */
4237 infiles[n_infiles].language = "*";
4238 infiles[n_infiles++].name = argv[i] + prev;
4240 else if (strcmp (argv[i], "-Xlinker") == 0)
4242 infiles[n_infiles].language = "*";
4243 infiles[n_infiles++].name = argv[++i];
4245 /* Xassembler and Xpreprocessor were already handled in the first argv
4246 scan, so all we need to do here is ignore them and their argument. */
4247 else if (strcmp (argv[i], "-Xassembler") == 0)
4249 else if (strcmp (argv[i], "-Xpreprocessor") == 0)
4251 else if (strcmp (argv[i], "-l") == 0)
4252 { /* POSIX allows separation of -l and the lib arg;
4253 canonicalize by concatenating -l with its arg */
4254 infiles[n_infiles].language = "*";
4255 infiles[n_infiles++].name = concat ("-l", argv[++i], NULL);
4257 else if (strncmp (argv[i], "-l", 2) == 0)
4259 infiles[n_infiles].language = "*";
4260 infiles[n_infiles++].name = argv[i];
4262 else if (strcmp (argv[i], "-wrapper") == 0)
4264 else if (strcmp (argv[i], "-specs") == 0)
4266 else if (strncmp (argv[i], "-specs=", 7) == 0)
4268 else if (strcmp (argv[i], "-time") == 0)
4270 else if (strcmp (argv[i], "-###") == 0)
4272 else if (argv[i][0] == '-' && argv[i][1] != 0)
4274 const char *p = &argv[i][1];
4279 if (p[1] == 0 && i + 1 == argc)
4280 fatal ("argument to '-x' is missing");
4282 spec_lang = argv[++i];
4285 if (! strcmp (spec_lang, "none"))
4286 /* Suppress the warning if -xnone comes after the last input
4287 file, because alternate command interfaces like g++ might
4288 find it useful to place -xnone after each input file. */
4291 last_language_n_infiles = n_infiles;
4294 switches[n_switches].part1 = p;
4295 /* Deal with option arguments in separate argv elements. */
4296 if ((SWITCH_TAKES_ARG (c) > (p[1] != 0))
4297 || WORD_SWITCH_TAKES_ARG (p))
4300 int n_args = WORD_SWITCH_TAKES_ARG (p);
4304 /* Count only the option arguments in separate argv elements. */
4305 n_args = SWITCH_TAKES_ARG (c) - (p[1] != 0);
4307 if (i + n_args >= argc)
4308 fatal ("argument to '-%s' is missing", p);
4309 switches[n_switches].args
4310 = XNEWVEC (const char *, n_args + 1);
4312 switches[n_switches].args[j++] = argv[++i];
4313 /* Null-terminate the vector. */
4314 switches[n_switches].args[j] = 0;
4316 else if (strchr (switches_need_spaces, c))
4318 /* On some systems, ld cannot handle some options without
4319 a space. So split the option from its argument. */
4320 char *part1 = XNEWVEC (char, 2);
4324 switches[n_switches].part1 = part1;
4325 switches[n_switches].args = XNEWVEC (const char *, 2);
4326 switches[n_switches].args[0] = xstrdup (p+1);
4327 switches[n_switches].args[1] = 0;
4330 switches[n_switches].args = 0;
4332 switches[n_switches].live_cond = 0;
4333 switches[n_switches].validated = 0;
4334 switches[n_switches].ordering = 0;
4335 /* These are always valid, since gcc.c itself understands the
4336 first four and gfortranspec.c understands -static-libgfortran. */
4337 if (!strcmp (p, "save-temps")
4338 || !strcmp (p, "static-libgcc")
4339 || !strcmp (p, "shared-libgcc")
4340 || !strcmp (p, "pipe")
4341 || !strcmp (p, "static-libgfortran"))
4342 switches[n_switches].validated = 1;
4345 char ch = switches[n_switches].part1[0];
4347 switches[n_switches].validated = 1;
4353 #ifdef HAVE_TARGET_OBJECT_SUFFIX
4354 argv[i] = convert_filename (argv[i], 0, access (argv[i], F_OK));
4357 if (strcmp (argv[i], "-") != 0 && access (argv[i], F_OK) < 0)
4359 perror_with_name (argv[i]);
4364 infiles[n_infiles].language = spec_lang;
4365 infiles[n_infiles++].name = argv[i];
4370 if (n_infiles == last_language_n_infiles && spec_lang != 0)
4371 error ("warning: '-x %s' after last input file has no effect", spec_lang);
4373 /* Ensure we only invoke each subprocess once. */
4374 if (print_subprocess_help || print_help_list || print_version)
4378 /* Create a dummy input file, so that we can pass
4379 the help option on to the various sub-processes. */
4380 infiles[0].language = "c";
4381 infiles[0].name = "help-dummy";
4384 switches[n_switches].part1 = 0;
4385 infiles[n_infiles].name = 0;
4388 /* Store switches not filtered out by %<S in spec in COLLECT_GCC_OPTIONS
4389 and place that in the environment. */
4392 set_collect_gcc_options (void)
4397 /* Build COLLECT_GCC_OPTIONS to have all of the options specified to
4399 obstack_grow (&collect_obstack, "COLLECT_GCC_OPTIONS=",
4400 sizeof ("COLLECT_GCC_OPTIONS=") - 1);
4403 for (i = 0; (int) i < n_switches; i++)
4405 const char *const *args;
4408 obstack_grow (&collect_obstack, " ", 1);
4412 /* Ignore elided switches. */
4413 if ((switches[i].live_cond & SWITCH_IGNORE) != 0)
4416 obstack_grow (&collect_obstack, "'-", 2);
4417 q = switches[i].part1;
4418 while ((p = strchr (q, '\'')))
4420 obstack_grow (&collect_obstack, q, p - q);
4421 obstack_grow (&collect_obstack, "'\\''", 4);
4424 obstack_grow (&collect_obstack, q, strlen (q));
4425 obstack_grow (&collect_obstack, "'", 1);
4427 for (args = switches[i].args; args && *args; args++)
4429 obstack_grow (&collect_obstack, " '", 2);
4431 while ((p = strchr (q, '\'')))
4433 obstack_grow (&collect_obstack, q, p - q);
4434 obstack_grow (&collect_obstack, "'\\''", 4);
4437 obstack_grow (&collect_obstack, q, strlen (q));
4438 obstack_grow (&collect_obstack, "'", 1);
4441 obstack_grow (&collect_obstack, "\0", 1);
4442 xputenv (XOBFINISH (&collect_obstack, char *));
4445 /* Process a spec string, accumulating and running commands. */
4447 /* These variables describe the input file name.
4448 input_file_number is the index on outfiles of this file,
4449 so that the output file name can be stored for later use by %o.
4450 input_basename is the start of the part of the input file
4451 sans all directory names, and basename_length is the number
4452 of characters starting there excluding the suffix .c or whatever. */
4454 static const char *input_filename;
4455 static int input_file_number;
4456 size_t input_filename_length;
4457 static int basename_length;
4458 static int suffixed_basename_length;
4459 static const char *input_basename;
4460 static const char *input_suffix;
4461 #ifndef HOST_LACKS_INODE_NUMBERS
4462 static struct stat input_stat;
4464 static int input_stat_set;
4466 /* The compiler used to process the current input file. */
4467 static struct compiler *input_file_compiler;
4469 /* These are variables used within do_spec and do_spec_1. */
4471 /* Nonzero if an arg has been started and not yet terminated
4472 (with space, tab or newline). */
4473 static int arg_going;
4475 /* Nonzero means %d or %g has been seen; the next arg to be terminated
4476 is a temporary file name. */
4477 static int delete_this_arg;
4479 /* Nonzero means %w has been seen; the next arg to be terminated
4480 is the output file name of this compilation. */
4481 static int this_is_output_file;
4483 /* Nonzero means %s has been seen; the next arg to be terminated
4484 is the name of a library file and we should try the standard
4485 search dirs for it. */
4486 static int this_is_library_file;
4488 /* Nonzero means that the input of this command is coming from a pipe. */
4489 static int input_from_pipe;
4491 /* Nonnull means substitute this for any suffix when outputting a switches
4493 static const char *suffix_subst;
4495 /* If there is an argument being accumulated, terminate it and store it. */
4498 end_going_arg (void)
4504 obstack_1grow (&obstack, 0);
4505 string = XOBFINISH (&obstack, const char *);
4506 if (this_is_library_file)
4507 string = find_file (string);
4508 store_arg (string, delete_this_arg, this_is_output_file);
4509 if (this_is_output_file)
4510 outfiles[input_file_number] = string;
4516 /* Parse the WRAPPER string which is a comma separated list of the command line
4517 and insert them into the beginning of argbuf. */
4520 insert_wrapper (const char *wrapper)
4524 char *buf = xstrdup (wrapper);
4533 while ((p = strchr (p, ',')) != NULL);
4535 if (argbuf_index + n >= argbuf_length)
4537 argbuf_length = argbuf_length * 2;
4538 while (argbuf_length < argbuf_index + n)
4540 argbuf = XRESIZEVEC (const char *, argbuf, argbuf_length);
4542 for (i = argbuf_index - 1; i >= 0; i--)
4543 argbuf[i + n] = argbuf[i];
4556 while ((p = strchr (p, ',')) != NULL);
4557 gcc_assert (i == n);
4561 /* Process the spec SPEC and run the commands specified therein.
4562 Returns 0 if the spec is successfully processed; -1 if failed. */
4565 do_spec (const char *spec)
4569 value = do_spec_2 (spec);
4571 /* Force out any unfinished command.
4572 If -pipe, this forces out the last command if it ended in `|'. */
4575 if (argbuf_index > 0 && !strcmp (argbuf[argbuf_index - 1], "|"))
4578 set_collect_gcc_options ();
4580 if (argbuf_index > 0)
4588 do_spec_2 (const char *spec)
4594 delete_this_arg = 0;
4595 this_is_output_file = 0;
4596 this_is_library_file = 0;
4597 input_from_pipe = 0;
4598 suffix_subst = NULL;
4600 result = do_spec_1 (spec, 0, NULL);
4608 /* Process the given spec string and add any new options to the end
4609 of the switches/n_switches array. */
4612 do_option_spec (const char *name, const char *spec)
4614 unsigned int i, value_count, value_len;
4615 const char *p, *q, *value;
4616 char *tmp_spec, *tmp_spec_p;
4618 if (configure_default_options[0].name == NULL)
4621 for (i = 0; i < ARRAY_SIZE (configure_default_options); i++)
4622 if (strcmp (configure_default_options[i].name, name) == 0)
4624 if (i == ARRAY_SIZE (configure_default_options))
4627 value = configure_default_options[i].value;
4628 value_len = strlen (value);
4630 /* Compute the size of the final spec. */
4633 while ((p = strstr (p, "%(VALUE)")) != NULL)
4639 /* Replace each %(VALUE) by the specified value. */
4640 tmp_spec = (char *) alloca (strlen (spec) + 1
4641 + value_count * (value_len - strlen ("%(VALUE)")));
4642 tmp_spec_p = tmp_spec;
4644 while ((p = strstr (q, "%(VALUE)")) != NULL)
4646 memcpy (tmp_spec_p, q, p - q);
4647 tmp_spec_p = tmp_spec_p + (p - q);
4648 memcpy (tmp_spec_p, value, value_len);
4649 tmp_spec_p += value_len;
4650 q = p + strlen ("%(VALUE)");
4652 strcpy (tmp_spec_p, q);
4654 do_self_spec (tmp_spec);
4657 /* Process the given spec string and add any new options to the end
4658 of the switches/n_switches array. */
4661 do_self_spec (const char *spec)
4664 do_spec_1 (" ", 0, NULL);
4666 if (argbuf_index > 0)
4671 n_switches += argbuf_index;
4672 switches = XRESIZEVEC (struct switchstr, switches, n_switches + 1);
4674 switches[n_switches] = switches[first];
4675 for (i = 0; i < argbuf_index; i++)
4677 struct switchstr *sw;
4679 /* Each switch should start with '-'. */
4680 if (argbuf[i][0] != '-')
4681 fatal ("switch '%s' does not start with '-'", argbuf[i]);
4683 sw = &switches[i + first];
4684 sw->part1 = &argbuf[i][1];
4693 /* Callback for processing %D and %I specs. */
4695 struct spec_path_info {
4700 bool separate_options;
4704 spec_path (char *path, void *data)
4706 struct spec_path_info *info = (struct spec_path_info *) data;
4710 if (info->omit_relative && !IS_ABSOLUTE_PATH (path))
4713 if (info->append_len != 0)
4715 len = strlen (path);
4716 memcpy (path + len, info->append, info->append_len + 1);
4719 if (!is_directory (path, true))
4722 do_spec_1 (info->option, 1, NULL);
4723 if (info->separate_options)
4724 do_spec_1 (" ", 0, NULL);
4726 if (info->append_len == 0)
4728 len = strlen (path);
4729 save = path[len - 1];
4730 if (IS_DIR_SEPARATOR (path[len - 1]))
4731 path[len - 1] = '\0';
4734 do_spec_1 (path, 1, NULL);
4735 do_spec_1 (" ", 0, NULL);
4737 /* Must not damage the original path. */
4738 if (info->append_len == 0)
4739 path[len - 1] = save;
4744 /* Create a temporary FILE with the contents of ARGV. Add @FILE to the
4748 create_at_file (char **argv)
4750 char *temp_file = make_temp_file ("");
4751 char *at_argument = concat ("@", temp_file, NULL);
4752 FILE *f = fopen (temp_file, "w");
4756 fatal ("could not open temporary response file %s",
4759 status = writeargv (argv, f);
4762 fatal ("could not write to temporary response file %s",
4765 status = fclose (f);
4768 fatal ("could not close temporary response file %s",
4771 store_arg (at_argument, 0, 0);
4773 record_temp_file (temp_file, !save_temps_flag, !save_temps_flag);
4776 /* True if we should compile INFILE. */
4779 compile_input_file_p (struct infile *infile)
4781 if ((!infile->language) || (infile->language[0] != '*'))
4782 if (infile->incompiler == input_file_compiler)
4787 /* Process the sub-spec SPEC as a portion of a larger spec.
4788 This is like processing a whole spec except that we do
4789 not initialize at the beginning and we do not supply a
4790 newline by default at the end.
4791 INSWITCH nonzero means don't process %-sequences in SPEC;
4792 in this case, % is treated as an ordinary character.
4793 This is used while substituting switches.
4794 INSWITCH nonzero also causes SPC not to terminate an argument.
4796 Value is zero unless a line was finished
4797 and the command on that line reported an error. */
4800 do_spec_1 (const char *spec, int inswitch, const char *soft_matched_part)
4802 const char *p = spec;
4808 /* If substituting a switch, treat all chars like letters.
4809 Otherwise, NL, SPC, TAB and % are special. */
4810 switch (inswitch ? 'a' : c)
4815 if (argbuf_index > 0 && !strcmp (argbuf[argbuf_index - 1], "|"))
4817 /* A `|' before the newline means use a pipe here,
4818 but only if -pipe was specified.
4819 Otherwise, execute now and don't pass the `|' as an arg. */
4822 input_from_pipe = 1;
4829 set_collect_gcc_options ();
4831 if (argbuf_index > 0)
4837 /* Reinitialize for a new command, and for a new argument. */
4840 delete_this_arg = 0;
4841 this_is_output_file = 0;
4842 this_is_library_file = 0;
4843 input_from_pipe = 0;
4850 obstack_1grow (&obstack, c);
4858 /* Reinitialize for a new argument. */
4859 delete_this_arg = 0;
4860 this_is_output_file = 0;
4861 this_is_library_file = 0;
4868 fatal ("spec '%s' invalid", spec);
4871 if (save_temps_length)
4872 obstack_grow (&obstack, save_temps_prefix, save_temps_length);
4874 obstack_grow (&obstack, input_basename, basename_length);
4879 if (save_temps_length)
4880 obstack_grow (&obstack, save_temps_prefix, save_temps_length);
4882 obstack_grow (&obstack, input_basename, suffixed_basename_length);
4887 delete_this_arg = 2;
4890 /* Dump out the directories specified with LIBRARY_PATH,
4891 followed by the absolute directories
4892 that we search for startfiles. */
4895 struct spec_path_info info;
4898 info.append_len = 0;
4899 #ifdef RELATIVE_PREFIX_NOT_LINKDIR
4900 /* Used on systems which record the specified -L dirs
4901 and use them to search for dynamic linking.
4902 Relative directories always come from -B,
4903 and it is better not to use them for searching
4904 at run time. In particular, stage1 loses. */
4905 info.omit_relative = true;
4907 info.omit_relative = false;
4909 info.separate_options = false;
4911 for_each_path (&startfile_prefixes, true, 0, spec_path, &info);
4916 /* %efoo means report an error with `foo' as error message
4917 and don't execute any more commands for this file. */
4921 while (*p != 0 && *p != '\n')
4923 buf = (char *) alloca (p - q + 1);
4924 strncpy (buf, q, p - q);
4931 /* %nfoo means report a notice with `foo' on stderr. */
4935 while (*p != 0 && *p != '\n')
4937 buf = (char *) alloca (p - q + 1);
4938 strncpy (buf, q, p - q);
4940 notice ("%s\n", buf);
4950 /* If save_temps_flag is off, and the HOST_BIT_BUCKET is
4951 defined, and it is not a directory, and it is
4952 writable, use it. Otherwise, treat this like any
4953 other temporary file. */
4955 if ((!save_temps_flag)
4956 && (stat (HOST_BIT_BUCKET, &st) == 0) && (!S_ISDIR (st.st_mode))
4957 && (access (HOST_BIT_BUCKET, W_OK) == 0))
4959 obstack_grow (&obstack, HOST_BIT_BUCKET,
4960 strlen (HOST_BIT_BUCKET));
4961 delete_this_arg = 0;
4966 goto create_temp_file;
4970 obstack_1grow (&obstack, '-');
4971 delete_this_arg = 0;
4974 /* consume suffix */
4975 while (*p == '.' || ISALNUM ((unsigned char) *p))
4977 if (p[0] == '%' && p[1] == 'O')
4982 goto create_temp_file;
4986 /* consume suffix */
4987 while (*p == '.' || ISALNUM ((unsigned char) *p))
4989 if (p[0] == '%' && p[1] == 'O')
4994 goto create_temp_file;
5000 struct temp_name *t;
5002 const char *suffix = p;
5003 char *saved_suffix = NULL;
5005 while (*p == '.' || ISALNUM ((unsigned char) *p))
5007 suffix_length = p - suffix;
5008 if (p[0] == '%' && p[1] == 'O')
5011 /* We don't support extra suffix characters after %O. */
5012 if (*p == '.' || ISALNUM ((unsigned char) *p))
5013 fatal ("spec '%s' has invalid '%%0%c'", spec, *p);
5014 if (suffix_length == 0)
5015 suffix = TARGET_OBJECT_SUFFIX;
5019 = XNEWVEC (char, suffix_length
5020 + strlen (TARGET_OBJECT_SUFFIX));
5021 strncpy (saved_suffix, suffix, suffix_length);
5022 strcpy (saved_suffix + suffix_length,
5023 TARGET_OBJECT_SUFFIX);
5025 suffix_length += strlen (TARGET_OBJECT_SUFFIX);
5028 /* If -save-temps=obj and -o were specified, use that for the
5030 if (save_temps_length)
5033 temp_filename_length
5034 = save_temps_length + suffix_length + 1;
5035 tmp = (char *) alloca (temp_filename_length);
5036 memcpy (tmp, save_temps_prefix, save_temps_length);
5037 memcpy (tmp + save_temps_length, suffix, suffix_length);
5038 tmp[save_temps_length + suffix_length] = '\0';
5039 temp_filename = save_string (tmp,
5040 temp_filename_length + 1);
5041 obstack_grow (&obstack, temp_filename,
5042 temp_filename_length);
5044 delete_this_arg = 0;
5048 /* If the input_filename has the same suffix specified
5049 for the %g, %u, or %U, and -save-temps is specified,
5050 we could end up using that file as an intermediate
5051 thus clobbering the user's source file (.e.g.,
5052 gcc -save-temps foo.s would clobber foo.s with the
5053 output of cpp0). So check for this condition and
5054 generate a temp file as the intermediate. */
5056 if (save_temps_flag)
5059 temp_filename_length = basename_length + suffix_length + 1;
5060 tmp = (char *) alloca (temp_filename_length);
5061 memcpy (tmp, input_basename, basename_length);
5062 memcpy (tmp + basename_length, suffix, suffix_length);
5063 tmp[basename_length + suffix_length] = '\0';
5064 temp_filename = tmp;
5066 if (strcmp (temp_filename, input_filename) != 0)
5068 #ifndef HOST_LACKS_INODE_NUMBERS
5069 struct stat st_temp;
5071 /* Note, set_input() resets input_stat_set to 0. */
5072 if (input_stat_set == 0)
5074 input_stat_set = stat (input_filename, &input_stat);
5075 if (input_stat_set >= 0)
5079 /* If we have the stat for the input_filename
5080 and we can do the stat for the temp_filename
5081 then the they could still refer to the same
5082 file if st_dev/st_ino's are the same. */
5083 if (input_stat_set != 1
5084 || stat (temp_filename, &st_temp) < 0
5085 || input_stat.st_dev != st_temp.st_dev
5086 || input_stat.st_ino != st_temp.st_ino)
5088 /* Just compare canonical pathnames. */
5089 char* input_realname = lrealpath (input_filename);
5090 char* temp_realname = lrealpath (temp_filename);
5091 bool files_differ = strcmp (input_realname, temp_realname);
5092 free (input_realname);
5093 free (temp_realname);
5097 temp_filename = save_string (temp_filename,
5098 temp_filename_length + 1);
5099 obstack_grow (&obstack, temp_filename,
5100 temp_filename_length);
5102 delete_this_arg = 0;
5108 /* See if we already have an association of %g/%u/%U and
5110 for (t = temp_names; t; t = t->next)
5111 if (t->length == suffix_length
5112 && strncmp (t->suffix, suffix, suffix_length) == 0
5113 && t->unique == (c == 'u' || c == 'U' || c == 'j'))
5116 /* Make a new association if needed. %u and %j
5118 if (t == 0 || c == 'u' || c == 'j')
5122 t = XNEW (struct temp_name);
5123 t->next = temp_names;
5126 t->length = suffix_length;
5129 t->suffix = saved_suffix;
5130 saved_suffix = NULL;
5133 t->suffix = save_string (suffix, suffix_length);
5134 t->unique = (c == 'u' || c == 'U' || c == 'j');
5135 temp_filename = make_temp_file (t->suffix);
5136 temp_filename_length = strlen (temp_filename);
5137 t->filename = temp_filename;
5138 t->filename_length = temp_filename_length;
5142 free (saved_suffix);
5144 obstack_grow (&obstack, t->filename, t->filename_length);
5145 delete_this_arg = 1;
5153 if (at_file_supplied)
5155 /* We are going to expand `%i' to `@FILE', where FILE
5156 is a newly-created temporary filename. The filenames
5157 that would usually be expanded in place of %o will be
5158 written to the temporary file. */
5163 for (i = 0; i < n_infiles; i++)
5164 if (compile_input_file_p (&infiles[i]))
5167 argv = (char **) alloca (sizeof (char *) * (n_files + 1));
5169 /* Copy the strings over. */
5170 for (i = 0, j = 0; i < n_infiles; i++)
5171 if (compile_input_file_p (&infiles[i]))
5173 argv[j] = CONST_CAST (char *, infiles[i].name);
5174 infiles[i].compiled = true;
5179 create_at_file (argv);
5182 for (i = 0; (int) i < n_infiles; i++)
5183 if (compile_input_file_p (&infiles[i]))
5185 store_arg (infiles[i].name, 0, 0);
5186 infiles[i].compiled = true;
5191 obstack_grow (&obstack, input_filename, input_filename_length);
5198 struct spec_path_info info;
5202 do_spec_1 ("-imultilib", 1, NULL);
5203 /* Make this a separate argument. */
5204 do_spec_1 (" ", 0, NULL);
5205 do_spec_1 (multilib_dir, 1, NULL);
5206 do_spec_1 (" ", 0, NULL);
5209 if (gcc_exec_prefix)
5211 do_spec_1 ("-iprefix", 1, NULL);
5212 /* Make this a separate argument. */
5213 do_spec_1 (" ", 0, NULL);
5214 do_spec_1 (gcc_exec_prefix, 1, NULL);
5215 do_spec_1 (" ", 0, NULL);
5218 if (target_system_root_changed ||
5219 (target_system_root && target_sysroot_hdrs_suffix))
5221 do_spec_1 ("-isysroot", 1, NULL);
5222 /* Make this a separate argument. */
5223 do_spec_1 (" ", 0, NULL);
5224 do_spec_1 (target_system_root, 1, NULL);
5225 if (target_sysroot_hdrs_suffix)
5226 do_spec_1 (target_sysroot_hdrs_suffix, 1, NULL);
5227 do_spec_1 (" ", 0, NULL);
5230 info.option = "-isystem";
5231 info.append = "include";
5232 info.append_len = strlen (info.append);
5233 info.omit_relative = false;
5234 info.separate_options = true;
5236 for_each_path (&include_prefixes, false, info.append_len,
5239 info.append = "include-fixed";
5240 if (*sysroot_hdrs_suffix_spec)
5241 info.append = concat (info.append, dir_separator_str,
5242 multilib_dir, NULL);
5243 info.append_len = strlen (info.append);
5244 for_each_path (&include_prefixes, false, info.append_len,
5251 int max = n_infiles;
5252 max += lang_specific_extra_outfiles;
5254 if (HAVE_GNU_LD && at_file_supplied)
5256 /* We are going to expand `%o' to `@FILE', where FILE
5257 is a newly-created temporary filename. The filenames
5258 that would usually be expanded in place of %o will be
5259 written to the temporary file. */
5264 /* Convert OUTFILES into a form suitable for writeargv. */
5266 /* Determine how many are non-NULL. */
5267 for (n_files = 0, i = 0; i < max; i++)
5268 n_files += outfiles[i] != NULL;
5270 argv = (char **) alloca (sizeof (char *) * (n_files + 1));
5272 /* Copy the strings over. */
5273 for (i = 0, j = 0; i < max; i++)
5276 argv[j] = CONST_CAST (char *, outfiles[i]);
5281 create_at_file (argv);
5284 for (i = 0; i < max; i++)
5286 store_arg (outfiles[i], 0, 0);
5291 obstack_grow (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX));
5296 this_is_library_file = 1;
5300 outfiles[input_file_number] = NULL;
5304 this_is_output_file = 1;
5309 int cur_index = argbuf_index;
5310 /* Handle the {...} following the %W. */
5312 fatal ("spec '%s' has invalid '%%W%c", spec, *p);
5313 p = handle_braces (p + 1);
5317 /* If any args were output, mark the last one for deletion
5319 if (argbuf_index != cur_index)
5320 record_temp_file (argbuf[argbuf_index - 1], 0, 1);
5324 /* %x{OPTION} records OPTION for %X to output. */
5330 /* Skip past the option value and make a copy. */
5332 fatal ("spec '%s' has invalid '%%x%c'", spec, *p);
5335 string = save_string (p1 + 1, p - p1 - 2);
5337 /* See if we already recorded this option. */
5338 for (i = 0; i < n_linker_options; i++)
5339 if (! strcmp (string, linker_options[i]))
5345 /* This option is new; add it. */
5346 add_linker_option (string, strlen (string));
5350 /* Dump out the options accumulated previously using %x. */
5352 for (i = 0; i < n_linker_options; i++)
5354 do_spec_1 (linker_options[i], 1, NULL);
5355 /* Make each accumulated option a separate argument. */
5356 do_spec_1 (" ", 0, NULL);
5360 /* Dump out the options accumulated previously using -Wa,. */
5362 for (i = 0; i < n_assembler_options; i++)
5364 do_spec_1 (assembler_options[i], 1, NULL);
5365 /* Make each accumulated option a separate argument. */
5366 do_spec_1 (" ", 0, NULL);
5370 /* Dump out the options accumulated previously using -Wp,. */
5372 for (i = 0; i < n_preprocessor_options; i++)
5374 do_spec_1 (preprocessor_options[i], 1, NULL);
5375 /* Make each accumulated option a separate argument. */
5376 do_spec_1 (" ", 0, NULL);
5380 /* Here are digits and numbers that just process
5381 a certain constant string as a spec. */
5384 value = do_spec_1 (cc1_spec, 0, NULL);
5390 value = do_spec_1 (cc1plus_spec, 0, NULL);
5396 value = do_spec_1 (asm_spec, 0, NULL);
5402 value = do_spec_1 (asm_final_spec, 0, NULL);
5409 const char *const spec
5410 = (input_file_compiler->cpp_spec
5411 ? input_file_compiler->cpp_spec
5413 value = do_spec_1 (spec, 0, NULL);
5420 value = do_spec_1 (endfile_spec, 0, NULL);
5426 value = do_spec_1 (link_spec, 0, NULL);
5432 value = do_spec_1 (lib_spec, 0, NULL);
5438 value = do_spec_1 (libgcc_spec, 0, NULL);
5444 /* We assume there is a directory
5445 separator at the end of this string. */
5446 if (target_system_root)
5448 obstack_grow (&obstack, target_system_root,
5449 strlen (target_system_root));
5450 if (target_sysroot_suffix)
5451 obstack_grow (&obstack, target_sysroot_suffix,
5452 strlen (target_sysroot_suffix));
5457 value = do_spec_1 (startfile_spec, 0, NULL);
5462 /* Here we define characters other than letters and digits. */
5465 p = handle_braces (p);
5471 p = handle_spec_function (p);
5477 obstack_1grow (&obstack, '%');
5484 while (p[len] && p[len] != ' ' && p[len] != '%')
5486 suffix_subst = save_string (p - 1, len + 1);
5491 /* Henceforth ignore the option(s) matching the pattern
5496 int have_wildcard = 0;
5499 while (p[len] && p[len] != ' ' && p[len] != '\t')
5502 if (p[len-1] == '*')
5505 for (i = 0; i < n_switches; i++)
5506 if (!strncmp (switches[i].part1, p, len - have_wildcard)
5507 && (have_wildcard || switches[i].part1[len] == '\0'))
5509 switches[i].live_cond |= SWITCH_IGNORE;
5510 switches[i].validated = 1;
5518 if (soft_matched_part)
5520 do_spec_1 (soft_matched_part, 1, NULL);
5521 do_spec_1 (" ", 0, NULL);
5524 /* Catch the case where a spec string contains something like
5525 '%{foo:%*}'. i.e. there is no * in the pattern on the left
5526 hand side of the :. */
5527 error ("spec failure: '%%*' has not been initialized by pattern match");
5530 /* Process a string found as the value of a spec given by name.
5531 This feature allows individual machine descriptions
5532 to add and use their own specs.
5533 %[...] modifies -D options the way %P does;
5534 %(...) uses the spec unmodified. */
5536 error ("warning: use of obsolete %%[ operator in specs");
5539 const char *name = p;
5540 struct spec_list *sl;
5543 /* The string after the S/P is the name of a spec that is to be
5545 while (*p && *p != ')' && *p != ']')
5548 /* See if it's in the list. */
5549 for (len = p - name, sl = specs; sl; sl = sl->next)
5550 if (sl->name_len == len && !strncmp (sl->name, name, len))
5552 name = *(sl->ptr_spec);
5554 notice ("Processing spec %c%s%c, which is '%s'\n",
5555 c, sl->name, (c == '(') ? ')' : ']', name);
5564 value = do_spec_1 (name, 0, NULL);
5570 char *x = (char *) alloca (strlen (name) * 2 + 1);
5572 const char *y = name;
5575 /* Copy all of NAME into BUF, but put __ after
5576 every -D and at the end of each arg. */
5579 if (! strncmp (y, "-D", 2))
5590 && (*y == ' ' || *y == '\t' || *y == '='
5591 || *y == '}' || *y == 0))
5604 value = do_spec_1 (buf, 0, NULL);
5610 /* Discard the closing paren or bracket. */
5617 error ("spec failure: unrecognized spec option '%c'", c);
5623 /* Backslash: treat next character as ordinary. */
5628 /* Ordinary character: put it into the current argument. */
5629 obstack_1grow (&obstack, c);
5633 /* End of string. If we are processing a spec function, we need to
5634 end any pending argument. */
5635 if (processing_spec_function)
5641 /* Look up a spec function. */
5643 static const struct spec_function *
5644 lookup_spec_function (const char *name)
5646 const struct spec_function *sf;
5648 for (sf = static_spec_functions; sf->name != NULL; sf++)
5649 if (strcmp (sf->name, name) == 0)
5655 /* Evaluate a spec function. */
5658 eval_spec_function (const char *func, const char *args)
5660 const struct spec_function *sf;
5661 const char *funcval;
5663 /* Saved spec processing context. */
5664 int save_argbuf_index;
5665 int save_argbuf_length;
5666 const char **save_argbuf;
5669 int save_delete_this_arg;
5670 int save_this_is_output_file;
5671 int save_this_is_library_file;
5672 int save_input_from_pipe;
5673 const char *save_suffix_subst;
5676 sf = lookup_spec_function (func);
5678 fatal ("unknown spec function '%s'", func);
5680 /* Push the spec processing context. */
5681 save_argbuf_index = argbuf_index;
5682 save_argbuf_length = argbuf_length;
5683 save_argbuf = argbuf;
5685 save_arg_going = arg_going;
5686 save_delete_this_arg = delete_this_arg;
5687 save_this_is_output_file = this_is_output_file;
5688 save_this_is_library_file = this_is_library_file;
5689 save_input_from_pipe = input_from_pipe;
5690 save_suffix_subst = suffix_subst;
5692 /* Create a new spec processing context, and build the function
5696 if (do_spec_2 (args) < 0)
5697 fatal ("error in args to spec function '%s'", func);
5699 /* argbuf_index is an index for the next argument to be inserted, and
5700 so contains the count of the args already inserted. */
5702 funcval = (*sf->func) (argbuf_index, argbuf);
5704 /* Pop the spec processing context. */
5705 argbuf_index = save_argbuf_index;
5706 argbuf_length = save_argbuf_length;
5708 argbuf = save_argbuf;
5710 arg_going = save_arg_going;
5711 delete_this_arg = save_delete_this_arg;
5712 this_is_output_file = save_this_is_output_file;
5713 this_is_library_file = save_this_is_library_file;
5714 input_from_pipe = save_input_from_pipe;
5715 suffix_subst = save_suffix_subst;
5720 /* Handle a spec function call of the form:
5724 ARGS is processed as a spec in a separate context and split into an
5725 argument vector in the normal fashion. The function returns a string
5726 containing a spec which we then process in the caller's context, or
5727 NULL if no processing is required. */
5730 handle_spec_function (const char *p)
5733 const char *endp, *funcval;
5736 processing_spec_function++;
5738 /* Get the function name. */
5739 for (endp = p; *endp != '\0'; endp++)
5741 if (*endp == '(') /* ) */
5743 /* Only allow [A-Za-z0-9], -, and _ in function names. */
5744 if (!ISALNUM (*endp) && !(*endp == '-' || *endp == '_'))
5745 fatal ("malformed spec function name");
5747 if (*endp != '(') /* ) */
5748 fatal ("no arguments for spec function");
5749 func = save_string (p, endp - p);
5752 /* Get the arguments. */
5753 for (count = 0; *endp != '\0'; endp++)
5762 else if (*endp == '(') /* ) */
5767 fatal ("malformed spec function arguments");
5768 args = save_string (p, endp - p);
5771 /* p now points to just past the end of the spec function expression. */
5773 funcval = eval_spec_function (func, args);
5774 if (funcval != NULL && do_spec_1 (funcval, 0, NULL) < 0)
5780 processing_spec_function--;
5785 /* Inline subroutine of handle_braces. Returns true if the current
5786 input suffix matches the atom bracketed by ATOM and END_ATOM. */
5788 input_suffix_matches (const char *atom, const char *end_atom)
5790 return (input_suffix
5791 && !strncmp (input_suffix, atom, end_atom - atom)
5792 && input_suffix[end_atom - atom] == '\0');
5795 /* Subroutine of handle_braces. Returns true if the current
5796 input file's spec name matches the atom bracketed by ATOM and END_ATOM. */
5798 input_spec_matches (const char *atom, const char *end_atom)
5800 return (input_file_compiler
5801 && input_file_compiler->suffix
5802 && input_file_compiler->suffix[0] != '\0'
5803 && !strncmp (input_file_compiler->suffix + 1, atom,
5805 && input_file_compiler->suffix[end_atom - atom + 1] == '\0');
5808 /* Subroutine of handle_braces. Returns true if a switch
5809 matching the atom bracketed by ATOM and END_ATOM appeared on the
5812 switch_matches (const char *atom, const char *end_atom, int starred)
5815 int len = end_atom - atom;
5816 int plen = starred ? len : -1;
5818 for (i = 0; i < n_switches; i++)
5819 if (!strncmp (switches[i].part1, atom, len)
5820 && (starred || switches[i].part1[len] == '\0')
5821 && check_live_switch (i, plen))
5827 /* Inline subroutine of handle_braces. Mark all of the switches which
5828 match ATOM (extends to END_ATOM; STARRED indicates whether there
5829 was a star after the atom) for later processing. */
5831 mark_matching_switches (const char *atom, const char *end_atom, int starred)
5834 int len = end_atom - atom;
5835 int plen = starred ? len : -1;
5837 for (i = 0; i < n_switches; i++)
5838 if (!strncmp (switches[i].part1, atom, len)
5839 && (starred || switches[i].part1[len] == '\0')
5840 && check_live_switch (i, plen))
5841 switches[i].ordering = 1;
5844 /* Inline subroutine of handle_braces. Process all the currently
5845 marked switches through give_switch, and clear the marks. */
5847 process_marked_switches (void)
5851 for (i = 0; i < n_switches; i++)
5852 if (switches[i].ordering == 1)
5854 switches[i].ordering = 0;
5859 /* Handle a %{ ... } construct. P points just inside the leading {.
5860 Returns a pointer one past the end of the brace block, or 0
5861 if we call do_spec_1 and that returns -1. */
5864 handle_braces (const char *p)
5866 const char *atom, *end_atom;
5867 const char *d_atom = NULL, *d_end_atom = NULL;
5868 const char *orig = p;
5876 bool a_must_be_last = false;
5877 bool ordered_set = false;
5878 bool disjunct_set = false;
5879 bool disj_matched = false;
5880 bool disj_starred = true;
5881 bool n_way_choice = false;
5882 bool n_way_matched = false;
5884 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
5891 /* Scan one "atom" (S in the description above of %{}, possibly
5892 with '!', '.', '@', ',', or '*' modifiers). */
5894 a_is_suffix = false;
5895 a_is_starred = false;
5896 a_is_negated = false;
5897 a_is_spectype = false;
5901 p++, a_is_negated = true;
5905 p++, a_is_suffix = true;
5907 p++, a_is_spectype = true;
5910 while (ISIDNUM(*p) || *p == '-' || *p == '+' || *p == '='
5911 || *p == ',' || *p == '.' || *p == '@')
5916 p++, a_is_starred = 1;
5922 /* Substitute the switch(es) indicated by the current atom. */
5924 if (disjunct_set || n_way_choice || a_is_negated || a_is_suffix
5925 || a_is_spectype || atom == end_atom)
5928 mark_matching_switches (atom, end_atom, a_is_starred);
5931 process_marked_switches ();
5935 /* Substitute some text if the current atom appears as a switch
5937 disjunct_set = true;
5941 if (atom == end_atom)
5943 if (!n_way_choice || disj_matched || *p == '|'
5944 || a_is_negated || a_is_suffix || a_is_spectype
5948 /* An empty term may appear as the last choice of an
5949 N-way choice set; it means "otherwise". */
5950 a_must_be_last = true;
5951 disj_matched = !n_way_matched;
5952 disj_starred = false;
5956 if ((a_is_suffix || a_is_spectype) && a_is_starred)
5960 disj_starred = false;
5962 /* Don't bother testing this atom if we already have a
5964 if (!disj_matched && !n_way_matched)
5967 a_matched = input_suffix_matches (atom, end_atom);
5968 else if (a_is_spectype)
5969 a_matched = input_spec_matches (atom, end_atom);
5971 a_matched = switch_matches (atom, end_atom, a_is_starred);
5973 if (a_matched != a_is_negated)
5975 disj_matched = true;
5977 d_end_atom = end_atom;
5984 /* Found the body, that is, the text to substitute if the
5985 current disjunction matches. */
5986 p = process_brace_body (p + 1, d_atom, d_end_atom, disj_starred,
5987 disj_matched && !n_way_matched);
5991 /* If we have an N-way choice, reset state for the next
5995 n_way_choice = true;
5996 n_way_matched |= disj_matched;
5997 disj_matched = false;
5998 disj_starred = true;
5999 d_atom = d_end_atom = NULL;
6008 while (*p++ != '}');
6013 fatal ("braced spec '%s' is invalid at '%c'", orig, *p);
6018 /* Subroutine of handle_braces. Scan and process a brace substitution body
6019 (X in the description of %{} syntax). P points one past the colon;
6020 ATOM and END_ATOM bracket the first atom which was found to be true
6021 (present) in the current disjunction; STARRED indicates whether all
6022 the atoms in the current disjunction were starred (for syntax validation);
6023 MATCHED indicates whether the disjunction matched or not, and therefore
6024 whether or not the body is to be processed through do_spec_1 or just
6025 skipped. Returns a pointer to the closing } or ;, or 0 if do_spec_1
6029 process_brace_body (const char *p, const char *atom, const char *end_atom,
6030 int starred, int matched)
6032 const char *body, *end_body;
6033 unsigned int nesting_level;
6034 bool have_subst = false;
6036 /* Locate the closing } or ;, honoring nested braces.
6037 Trim trailing whitespace. */
6046 if (!--nesting_level)
6049 else if (*p == ';' && nesting_level == 1)
6051 else if (*p == '%' && p[1] == '*' && nesting_level == 1)
6053 else if (*p == '\0')
6059 while (end_body[-1] == ' ' || end_body[-1] == '\t')
6062 if (have_subst && !starred)
6067 /* Copy the substitution body to permanent storage and execute it.
6068 If have_subst is false, this is a simple matter of running the
6069 body through do_spec_1... */
6070 char *string = save_string (body, end_body - body);
6073 if (do_spec_1 (string, 0, NULL) < 0)
6078 /* ... but if have_subst is true, we have to process the
6079 body once for each matching switch, with %* set to the
6080 variant part of the switch. */
6081 unsigned int hard_match_len = end_atom - atom;
6084 for (i = 0; i < n_switches; i++)
6085 if (!strncmp (switches[i].part1, atom, hard_match_len)
6086 && check_live_switch (i, hard_match_len))
6088 if (do_spec_1 (string, 0,
6089 &switches[i].part1[hard_match_len]) < 0)
6091 /* Pass any arguments this switch has. */
6093 suffix_subst = NULL;
6101 fatal ("braced spec body '%s' is invalid", body);
6104 /* Return 0 iff switch number SWITCHNUM is obsoleted by a later switch
6105 on the command line. PREFIX_LENGTH is the length of XXX in an {XXX*}
6106 spec, or -1 if either exact match or %* is used.
6108 A -O switch is obsoleted by a later -O switch. A -f, -m, or -W switch
6109 whose value does not begin with "no-" is obsoleted by the same value
6110 with the "no-", similarly for a switch with the "no-" prefix. */
6113 check_live_switch (int switchnum, int prefix_length)
6115 const char *name = switches[switchnum].part1;
6118 /* In the common case of {<at-most-one-letter>*}, a negating
6119 switch would always match, so ignore that case. We will just
6120 send the conflicting switches to the compiler phase. */
6121 if (prefix_length >= 0 && prefix_length <= 1)
6124 /* If we already processed this switch and determined if it was
6125 live or not, return our past determination. */
6126 if (switches[switchnum].live_cond != 0)
6127 return ((switches[switchnum].live_cond & SWITCH_LIVE) != 0
6128 && (switches[switchnum].live_cond & SWITCH_FALSE) == 0);
6130 /* Now search for duplicate in a manner that depends on the name. */
6134 for (i = switchnum + 1; i < n_switches; i++)
6135 if (switches[i].part1[0] == 'O')
6137 switches[switchnum].validated = 1;
6138 switches[switchnum].live_cond = SWITCH_FALSE;
6143 case 'W': case 'f': case 'm':
6144 if (! strncmp (name + 1, "no-", 3))
6146 /* We have Xno-YYY, search for XYYY. */
6147 for (i = switchnum + 1; i < n_switches; i++)
6148 if (switches[i].part1[0] == name[0]
6149 && ! strcmp (&switches[i].part1[1], &name[4]))
6151 switches[switchnum].validated = 1;
6152 switches[switchnum].live_cond = SWITCH_FALSE;
6158 /* We have XYYY, search for Xno-YYY. */
6159 for (i = switchnum + 1; i < n_switches; i++)
6160 if (switches[i].part1[0] == name[0]
6161 && switches[i].part1[1] == 'n'
6162 && switches[i].part1[2] == 'o'
6163 && switches[i].part1[3] == '-'
6164 && !strcmp (&switches[i].part1[4], &name[1]))
6166 switches[switchnum].validated = 1;
6167 switches[switchnum].live_cond = SWITCH_FALSE;
6174 /* Otherwise the switch is live. */
6175 switches[switchnum].live_cond |= SWITCH_LIVE;
6179 /* Pass a switch to the current accumulating command
6180 in the same form that we received it.
6181 SWITCHNUM identifies the switch; it is an index into
6182 the vector of switches gcc received, which is `switches'.
6183 This cannot fail since it never finishes a command line.
6185 If OMIT_FIRST_WORD is nonzero, then we omit .part1 of the argument. */
6188 give_switch (int switchnum, int omit_first_word)
6190 if ((switches[switchnum].live_cond & SWITCH_IGNORE) != 0)
6193 if (!omit_first_word)
6195 do_spec_1 ("-", 0, NULL);
6196 do_spec_1 (switches[switchnum].part1, 1, NULL);
6199 if (switches[switchnum].args != 0)
6202 for (p = switches[switchnum].args; *p; p++)
6204 const char *arg = *p;
6206 do_spec_1 (" ", 0, NULL);
6209 unsigned length = strlen (arg);
6212 while (length-- && !IS_DIR_SEPARATOR (arg[length]))
6213 if (arg[length] == '.')
6215 (CONST_CAST(char *, arg))[length] = 0;
6219 do_spec_1 (arg, 1, NULL);
6221 (CONST_CAST(char *, arg))[length] = '.';
6222 do_spec_1 (suffix_subst, 1, NULL);
6225 do_spec_1 (arg, 1, NULL);
6229 do_spec_1 (" ", 0, NULL);
6230 switches[switchnum].validated = 1;
6233 /* Search for a file named NAME trying various prefixes including the
6234 user's -B prefix and some standard ones.
6235 Return the absolute file name found. If nothing is found, return NAME. */
6238 find_file (const char *name)
6240 char *newname = find_a_file (&startfile_prefixes, name, R_OK, true);
6241 return newname ? newname : name;
6244 /* Determine whether a directory exists. If LINKER, return 0 for
6245 certain fixed names not needed by the linker. */
6248 is_directory (const char *path1, bool linker)
6255 /* Ensure the string ends with "/.". The resulting path will be a
6256 directory even if the given path is a symbolic link. */
6257 len1 = strlen (path1);
6258 path = (char *) alloca (3 + len1);
6259 memcpy (path, path1, len1);
6261 if (!IS_DIR_SEPARATOR (cp[-1]))
6262 *cp++ = DIR_SEPARATOR;
6266 /* Exclude directories that the linker is known to search. */
6268 && IS_DIR_SEPARATOR (path[0])
6270 && strncmp (path + 1, "lib", 3) == 0)
6272 && strncmp (path + 1, "usr", 3) == 0
6273 && IS_DIR_SEPARATOR (path[4])
6274 && strncmp (path + 5, "lib", 3) == 0)))
6277 return (stat (path, &st) >= 0 && S_ISDIR (st.st_mode));
6280 /* Set up the various global variables to indicate that we're processing
6281 the input file named FILENAME. */
6284 set_input (const char *filename)
6288 input_filename = filename;
6289 input_filename_length = strlen (input_filename);
6290 input_basename = lbasename (input_filename);
6292 /* Find a suffix starting with the last period,
6293 and set basename_length to exclude that suffix. */
6294 basename_length = strlen (input_basename);
6295 suffixed_basename_length = basename_length;
6296 p = input_basename + basename_length;
6297 while (p != input_basename && *p != '.')
6299 if (*p == '.' && p != input_basename)
6301 basename_length = p - input_basename;
6302 input_suffix = p + 1;
6307 /* If a spec for 'g', 'u', or 'U' is seen with -save-temps then
6308 we will need to do a stat on the input_filename. The
6309 INPUT_STAT_SET signals that the stat is needed. */
6313 /* On fatal signals, delete all the temporary files. */
6316 fatal_error (int signum)
6318 signal (signum, SIG_DFL);
6319 delete_failure_queue ();
6320 delete_temp_files ();
6321 /* Get the same signal again, this time not handled,
6322 so its normal effect occurs. */
6323 kill (getpid (), signum);
6326 extern int main (int, char **);
6329 main (int argc, char **argv)
6333 int linker_was_run = 0;
6334 int lang_n_infiles = 0;
6335 int num_linker_inputs = 0;
6336 char *explicit_link_files;
6339 struct user_specs *uptr;
6340 char **old_argv = argv;
6342 /* Initialize here, not in definition. The IRIX 6 O32 cc sometimes chokes
6343 on ?: in file-scope variable initializations. */
6344 asm_debug = ASM_DEBUG_SPEC;
6346 p = argv[0] + strlen (argv[0]);
6347 while (p != argv[0] && !IS_DIR_SEPARATOR (p[-1]))
6351 xmalloc_set_program_name (programname);
6353 expandargv (&argc, &argv);
6355 /* Determine if any expansions were made. */
6356 if (argv != old_argv)
6357 at_file_supplied = true;
6359 prune_options (&argc, &argv);
6361 #ifdef GCC_DRIVER_HOST_INITIALIZATION
6362 /* Perform host dependent initialization when needed. */
6363 GCC_DRIVER_HOST_INITIALIZATION;
6366 /* Unlock the stdio streams. */
6367 unlock_std_streams ();
6369 gcc_init_libintl ();
6371 if (signal (SIGINT, SIG_IGN) != SIG_IGN)
6372 signal (SIGINT, fatal_error);
6374 if (signal (SIGHUP, SIG_IGN) != SIG_IGN)
6375 signal (SIGHUP, fatal_error);
6377 if (signal (SIGTERM, SIG_IGN) != SIG_IGN)
6378 signal (SIGTERM, fatal_error);
6380 if (signal (SIGPIPE, SIG_IGN) != SIG_IGN)
6381 signal (SIGPIPE, fatal_error);
6384 /* We *MUST* set SIGCHLD to SIG_DFL so that the wait4() call will
6385 receive the signal. A different setting is inheritable */
6386 signal (SIGCHLD, SIG_DFL);
6389 /* Allocate the argument vector. */
6392 obstack_init (&obstack);
6394 /* Build multilib_select, et. al from the separate lines that make up each
6395 multilib selection. */
6397 const char *const *q = multilib_raw;
6400 obstack_init (&multilib_obstack);
6401 while ((p = *q++) != (char *) 0)
6402 obstack_grow (&multilib_obstack, p, strlen (p));
6404 obstack_1grow (&multilib_obstack, 0);
6405 multilib_select = XOBFINISH (&multilib_obstack, const char *);
6407 q = multilib_matches_raw;
6408 while ((p = *q++) != (char *) 0)
6409 obstack_grow (&multilib_obstack, p, strlen (p));
6411 obstack_1grow (&multilib_obstack, 0);
6412 multilib_matches = XOBFINISH (&multilib_obstack, const char *);
6414 q = multilib_exclusions_raw;
6415 while ((p = *q++) != (char *) 0)
6416 obstack_grow (&multilib_obstack, p, strlen (p));
6418 obstack_1grow (&multilib_obstack, 0);
6419 multilib_exclusions = XOBFINISH (&multilib_obstack, const char *);
6422 for (i = 0; i < ARRAY_SIZE (multilib_defaults_raw); i++)
6425 obstack_1grow (&multilib_obstack, ' ');
6426 obstack_grow (&multilib_obstack,
6427 multilib_defaults_raw[i],
6428 strlen (multilib_defaults_raw[i]));
6432 obstack_1grow (&multilib_obstack, 0);
6433 multilib_defaults = XOBFINISH (&multilib_obstack, const char *);
6436 /* Set up to remember the pathname of gcc and any options
6437 needed for collect. We use argv[0] instead of programname because
6438 we need the complete pathname. */
6439 obstack_init (&collect_obstack);
6440 obstack_grow (&collect_obstack, "COLLECT_GCC=", sizeof ("COLLECT_GCC=") - 1);
6441 obstack_grow (&collect_obstack, argv[0], strlen (argv[0]) + 1);
6442 xputenv (XOBFINISH (&collect_obstack, char *));
6444 #ifdef INIT_ENVIRONMENT
6445 /* Set up any other necessary machine specific environment variables. */
6446 xputenv (INIT_ENVIRONMENT);
6449 /* Make a table of what switches there are (switches, n_switches).
6450 Make a table of specified input files (infiles, n_infiles).
6451 Decode switches that are handled locally. */
6453 process_command (argc, (const char **) argv);
6455 /* Initialize the vector of specs to just the default.
6456 This means one element containing 0s, as a terminator. */
6458 compilers = XNEWVAR (struct compiler, sizeof default_compilers);
6459 memcpy (compilers, default_compilers, sizeof default_compilers);
6460 n_compilers = n_default_compilers;
6462 /* Read specs from a file if there is one. */
6464 machine_suffix = concat (spec_machine, dir_separator_str,
6465 spec_version, dir_separator_str, NULL);
6466 just_machine_suffix = concat (spec_machine, dir_separator_str, NULL);
6468 specs_file = find_a_file (&startfile_prefixes, "specs", R_OK, true);
6469 /* Read the specs file unless it is a default one. */
6470 if (specs_file != 0 && strcmp (specs_file, "specs"))
6471 read_specs (specs_file, TRUE);
6475 /* We need to check standard_exec_prefix/just_machine_suffix/specs
6476 for any override of as, ld and libraries. */
6477 specs_file = (char *) alloca (strlen (standard_exec_prefix)
6478 + strlen (just_machine_suffix) + sizeof ("specs"));
6480 strcpy (specs_file, standard_exec_prefix);
6481 strcat (specs_file, just_machine_suffix);
6482 strcat (specs_file, "specs");
6483 if (access (specs_file, R_OK) == 0)
6484 read_specs (specs_file, TRUE);
6486 /* Process any configure-time defaults specified for the command line
6487 options, via OPTION_DEFAULT_SPECS. */
6488 for (i = 0; i < ARRAY_SIZE (option_default_specs); i++)
6489 do_option_spec (option_default_specs[i].name,
6490 option_default_specs[i].spec);
6492 /* Process DRIVER_SELF_SPECS, adding any new options to the end
6493 of the command line. */
6495 for (i = 0; i < ARRAY_SIZE (driver_self_specs); i++)
6496 do_self_spec (driver_self_specs[i]);
6498 /* If not cross-compiling, look for executables in the standard
6500 if (*cross_compile == '0')
6502 if (*md_exec_prefix)
6504 add_prefix (&exec_prefixes, md_exec_prefix, "GCC",
6505 PREFIX_PRIORITY_LAST, 0, 0);
6509 /* Process sysroot_suffix_spec. */
6510 if (*sysroot_suffix_spec != 0
6511 && do_spec_2 (sysroot_suffix_spec) == 0)
6513 if (argbuf_index > 1)
6514 error ("spec failure: more than one arg to SYSROOT_SUFFIX_SPEC");
6515 else if (argbuf_index == 1)
6516 target_sysroot_suffix = xstrdup (argbuf[argbuf_index -1]);
6519 #ifdef HAVE_LD_SYSROOT
6520 /* Pass the --sysroot option to the linker, if it supports that. If
6521 there is a sysroot_suffix_spec, it has already been processed by
6522 this point, so target_system_root really is the system root we
6524 if (target_system_root)
6526 obstack_grow (&obstack, "%(sysroot_spec) ", strlen ("%(sysroot_spec) "));
6527 obstack_grow0 (&obstack, link_spec, strlen (link_spec));
6528 set_spec ("link", XOBFINISH (&obstack, const char *));
6532 /* Process sysroot_hdrs_suffix_spec. */
6533 if (*sysroot_hdrs_suffix_spec != 0
6534 && do_spec_2 (sysroot_hdrs_suffix_spec) == 0)
6536 if (argbuf_index > 1)
6537 error ("spec failure: more than one arg to SYSROOT_HEADERS_SUFFIX_SPEC");
6538 else if (argbuf_index == 1)
6539 target_sysroot_hdrs_suffix = xstrdup (argbuf[argbuf_index -1]);
6542 /* Look for startfiles in the standard places. */
6543 if (*startfile_prefix_spec != 0
6544 && do_spec_2 (startfile_prefix_spec) == 0
6545 && do_spec_1 (" ", 0, NULL) == 0)
6548 for (ndx = 0; ndx < argbuf_index; ndx++)
6549 add_sysrooted_prefix (&startfile_prefixes, argbuf[ndx], "BINUTILS",
6550 PREFIX_PRIORITY_LAST, 0, 1);
6552 /* We should eventually get rid of all these and stick to
6553 startfile_prefix_spec exclusively. */
6554 else if (*cross_compile == '0' || target_system_root)
6556 if (*md_startfile_prefix)
6557 add_sysrooted_prefix (&startfile_prefixes, md_startfile_prefix,
6558 "GCC", PREFIX_PRIORITY_LAST, 0, 1);
6560 if (*md_startfile_prefix_1)
6561 add_sysrooted_prefix (&startfile_prefixes, md_startfile_prefix_1,
6562 "GCC", PREFIX_PRIORITY_LAST, 0, 1);
6564 /* If standard_startfile_prefix is relative, base it on
6565 standard_exec_prefix. This lets us move the installed tree
6566 as a unit. If GCC_EXEC_PREFIX is defined, base
6567 standard_startfile_prefix on that as well.
6569 If the prefix is relative, only search it for native compilers;
6570 otherwise we will search a directory containing host libraries. */
6571 if (IS_ABSOLUTE_PATH (standard_startfile_prefix))
6572 add_sysrooted_prefix (&startfile_prefixes,
6573 standard_startfile_prefix, "BINUTILS",
6574 PREFIX_PRIORITY_LAST, 0, 1);
6575 else if (*cross_compile == '0')
6577 add_prefix (&startfile_prefixes,
6578 concat (gcc_exec_prefix
6579 ? gcc_exec_prefix : standard_exec_prefix,
6581 standard_startfile_prefix, NULL),
6582 NULL, PREFIX_PRIORITY_LAST, 0, 1);
6585 /* Sysrooted prefixes are relocated because target_system_root is
6586 also relocated by gcc_exec_prefix. */
6587 if (*standard_startfile_prefix_1)
6588 add_sysrooted_prefix (&startfile_prefixes,
6589 standard_startfile_prefix_1, "BINUTILS",
6590 PREFIX_PRIORITY_LAST, 0, 1);
6591 if (*standard_startfile_prefix_2)
6592 add_sysrooted_prefix (&startfile_prefixes,
6593 standard_startfile_prefix_2, "BINUTILS",
6594 PREFIX_PRIORITY_LAST, 0, 1);
6597 /* Process any user specified specs in the order given on the command
6599 for (uptr = user_specs_head; uptr; uptr = uptr->next)
6601 char *filename = find_a_file (&startfile_prefixes, uptr->filename,
6603 read_specs (filename ? filename : uptr->filename, FALSE);
6606 /* If we have a GCC_EXEC_PREFIX envvar, modify it for cpp's sake. */
6607 if (gcc_exec_prefix)
6608 gcc_exec_prefix = concat (gcc_exec_prefix, spec_machine, dir_separator_str,
6609 spec_version, dir_separator_str, NULL);
6611 /* Now we have the specs.
6612 Set the `valid' bits for switches that match anything in any spec. */
6614 validate_all_switches ();
6616 /* Now that we have the switches and the specs, set
6617 the subdirectory based on the options. */
6618 set_multilib_dir ();
6620 /* Warn about any switches that no pass was interested in. */
6622 for (i = 0; (int) i < n_switches; i++)
6623 if (! switches[i].validated)
6624 error ("unrecognized option '-%s'", switches[i].part1);
6626 /* Obey some of the options. */
6628 if (print_search_dirs)
6630 printf (_("install: %s%s\n"),
6631 gcc_exec_prefix ? gcc_exec_prefix : standard_exec_prefix,
6632 gcc_exec_prefix ? "" : machine_suffix);
6633 printf (_("programs: %s\n"),
6634 build_search_list (&exec_prefixes, "", false, false));
6635 printf (_("libraries: %s\n"),
6636 build_search_list (&startfile_prefixes, "", false, true));
6640 if (print_file_name)
6642 printf ("%s\n", find_file (print_file_name));
6646 if (print_prog_name)
6648 char *newname = find_a_file (&exec_prefixes, print_prog_name, X_OK, 0);
6649 printf ("%s\n", (newname ? newname : print_prog_name));
6653 if (print_multi_lib)
6655 print_multilib_info ();
6659 if (print_multi_directory)
6661 if (multilib_dir == NULL)
6664 printf ("%s\n", multilib_dir);
6670 if (target_system_root)
6672 if (target_sysroot_suffix)
6673 printf ("%s%s\n", target_system_root, target_sysroot_suffix);
6675 printf ("%s\n", target_system_root);
6680 if (print_multi_os_directory)
6682 if (multilib_os_dir == NULL)
6685 printf ("%s\n", multilib_os_dir);
6689 if (print_sysroot_headers_suffix)
6691 if (*sysroot_hdrs_suffix_spec)
6693 printf("%s\n", (target_sysroot_hdrs_suffix
6694 ? target_sysroot_hdrs_suffix
6699 /* The error status indicates that only one set of fixed
6700 headers should be built. */
6701 fatal ("not configured with sysroot headers suffix");
6704 if (print_help_list)
6710 printf (_("\nFor bug reporting instructions, please see:\n"));
6711 printf ("%s.\n", bug_report_url);
6716 /* We do not exit here. Instead we have created a fake input file
6717 called 'help-dummy' which needs to be compiled, and we pass this
6718 on the various sub-processes, along with the --help switch.
6719 Ensure their output appears after ours. */
6720 fputc ('\n', stdout);
6726 printf (_("%s %s%s\n"), programname, pkgversion_string,
6728 printf ("Copyright %s 2009 Free Software Foundation, Inc.\n",
6730 fputs (_("This is free software; see the source for copying conditions. There is NO\n\
6731 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\n"),
6736 /* We do not exit here. We use the same mechanism of --help to print
6737 the version of the sub-processes. */
6738 fputc ('\n', stdout);
6747 notice ("Target: %s\n", spec_machine);
6748 notice ("Configured with: %s\n", configuration_arguments);
6750 #ifdef THREAD_MODEL_SPEC
6751 /* We could have defined THREAD_MODEL_SPEC to "%*" by default,
6752 but there's no point in doing all this processing just to get
6753 thread_model back. */
6754 obstack_init (&obstack);
6755 do_spec_1 (THREAD_MODEL_SPEC, 0, thread_model);
6756 obstack_1grow (&obstack, '\0');
6757 thrmod = XOBFINISH (&obstack, const char *);
6759 thrmod = thread_model;
6762 notice ("Thread model: %s\n", thrmod);
6764 /* compiler_version is truncated at the first space when initialized
6765 from version string, so truncate version_string at the first space
6766 before comparing. */
6767 for (n = 0; version_string[n]; n++)
6768 if (version_string[n] == ' ')
6771 if (! strncmp (version_string, compiler_version, n)
6772 && compiler_version[n] == 0)
6773 notice ("gcc version %s %s\n", version_string, pkgversion_string);
6775 notice ("gcc driver version %s %sexecuting gcc version %s\n",
6776 version_string, pkgversion_string, compiler_version);
6782 if (n_infiles == added_libraries)
6783 fatal ("no input files");
6785 /* Make a place to record the compiler output file names
6786 that correspond to the input files. */
6789 i += lang_specific_extra_outfiles;
6790 outfiles = XCNEWVEC (const char *, i);
6792 /* Record which files were specified explicitly as link input. */
6794 explicit_link_files = XCNEWVEC (char, n_infiles);
6797 combine_inputs = true;
6799 combine_inputs = false;
6801 for (i = 0; (int) i < n_infiles; i++)
6803 const char *name = infiles[i].name;
6804 struct compiler *compiler = lookup_compiler (name,
6806 infiles[i].language);
6808 if (compiler && !(compiler->combinable))
6809 combine_inputs = false;
6811 if (lang_n_infiles > 0 && compiler != input_file_compiler
6812 && infiles[i].language && infiles[i].language[0] != '*')
6813 infiles[i].incompiler = compiler;
6817 input_file_compiler = compiler;
6818 infiles[i].incompiler = compiler;
6822 /* Since there is no compiler for this input file, assume it is a
6824 explicit_link_files[i] = 1;
6825 infiles[i].incompiler = NULL;
6827 infiles[i].compiled = false;
6828 infiles[i].preprocessed = false;
6831 if (!combine_inputs && have_c && have_o && lang_n_infiles > 1)
6832 fatal ("cannot specify -o with -c or -S with multiple files");
6834 if (combine_flag && save_temps_flag)
6836 bool save_combine_inputs = combine_inputs;
6837 /* Must do a separate pre-processing pass for C & Objective-C files, to
6838 obtain individual .i files. */
6840 combine_inputs = false;
6841 for (i = 0; (int) i < n_infiles; i++)
6843 int this_file_error = 0;
6845 input_file_number = i;
6846 set_input (infiles[i].name);
6847 if (infiles[i].incompiler
6848 && (infiles[i].incompiler)->needs_preprocessing)
6849 input_file_compiler = infiles[i].incompiler;
6853 if (input_file_compiler)
6855 if (input_file_compiler->spec[0] == '#')
6857 error ("%s: %s compiler not installed on this system",
6858 input_filename, &input_file_compiler->spec[1]);
6859 this_file_error = 1;
6863 value = do_spec (input_file_compiler->spec);
6864 infiles[i].preprocessed = true;
6865 if (!have_o_argbuf_index)
6866 fatal ("spec '%s' is invalid", input_file_compiler->spec);
6867 infiles[i].name = argbuf[have_o_argbuf_index];
6868 infiles[i].incompiler
6869 = lookup_compiler (infiles[i].name,
6870 strlen (infiles[i].name),
6871 infiles[i].language);
6874 this_file_error = 1;
6878 if (this_file_error)
6880 delete_failure_queue ();
6884 clear_failure_queue ();
6886 combine_inputs = save_combine_inputs;
6889 for (i = 0; (int) i < n_infiles; i++)
6891 int this_file_error = 0;
6893 /* Tell do_spec what to substitute for %i. */
6895 input_file_number = i;
6896 set_input (infiles[i].name);
6898 if (infiles[i].compiled)
6901 /* Use the same thing in %o, unless cp->spec says otherwise. */
6903 outfiles[i] = input_filename;
6905 /* Figure out which compiler from the file's suffix. */
6907 if (! combine_inputs)
6909 = lookup_compiler (infiles[i].name, input_filename_length,
6910 infiles[i].language);
6912 input_file_compiler = infiles[i].incompiler;
6914 if (input_file_compiler)
6916 /* Ok, we found an applicable compiler. Run its spec. */
6918 if (input_file_compiler->spec[0] == '#')
6920 error ("%s: %s compiler not installed on this system",
6921 input_filename, &input_file_compiler->spec[1]);
6922 this_file_error = 1;
6926 value = do_spec (input_file_compiler->spec);
6927 infiles[i].compiled = true;
6929 this_file_error = 1;
6933 /* If this file's name does not contain a recognized suffix,
6934 record it as explicit linker input. */
6937 explicit_link_files[i] = 1;
6939 /* Clear the delete-on-failure queue, deleting the files in it
6940 if this compilation failed. */
6942 if (this_file_error)
6944 delete_failure_queue ();
6947 /* If this compilation succeeded, don't delete those files later. */
6948 clear_failure_queue ();
6951 /* Reset the input file name to the first compile/object file name, for use
6952 with %b in LINK_SPEC. We use the first input file that we can find
6953 a compiler to compile it instead of using infiles.language since for
6954 languages other than C we use aliases that we then lookup later. */
6959 for (i = 0; i < n_infiles ; i++)
6960 if (infiles[i].language && infiles[i].language[0] != '*')
6962 set_input (infiles[i].name);
6967 if (error_count == 0)
6969 /* Make sure INPUT_FILE_NUMBER points to first available open
6971 input_file_number = n_infiles;
6972 if (lang_specific_pre_link ())
6976 /* Determine if there are any linker input files. */
6977 num_linker_inputs = 0;
6978 for (i = 0; (int) i < n_infiles; i++)
6979 if (explicit_link_files[i] || outfiles[i] != NULL)
6980 num_linker_inputs++;
6982 /* Run ld to link all the compiler output files. */
6984 if (num_linker_inputs > 0 && error_count == 0 && print_subprocess_help < 2)
6986 int tmp = execution_count;
6988 /* We'll use ld if we can't find collect2. */
6989 if (! strcmp (linker_name_spec, "collect2"))
6991 char *s = find_a_file (&exec_prefixes, "collect2", X_OK, false);
6993 linker_name_spec = "ld";
6995 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
6997 putenv_from_prefixes (&exec_prefixes, "COMPILER_PATH", false);
6998 putenv_from_prefixes (&startfile_prefixes, LIBRARY_PATH_ENV, true);
7000 if (print_subprocess_help == 1)
7002 printf (_("\nLinker options\n==============\n\n"));
7003 printf (_("Use \"-Wl,OPTION\" to pass \"OPTION\""
7004 " to the linker.\n\n"));
7007 value = do_spec (link_command_spec);
7010 linker_was_run = (tmp != execution_count);
7013 /* If options said don't run linker,
7014 complain about input files to be given to the linker. */
7016 if (! linker_was_run && error_count == 0)
7017 for (i = 0; (int) i < n_infiles; i++)
7018 if (explicit_link_files[i]
7019 && !(infiles[i].language && infiles[i].language[0] == '*'))
7020 error ("%s: linker input file unused because linking not done",
7023 /* Delete some or all of the temporary files we made. */
7026 delete_failure_queue ();
7027 delete_temp_files ();
7029 if (print_help_list)
7031 printf (("\nFor bug reporting instructions, please see:\n"));
7032 printf ("%s\n", bug_report_url);
7035 return (signal_count != 0 ? 2
7036 : error_count > 0 ? (pass_exit_codes ? greatest_status : 1)
7040 /* Find the proper compilation spec for the file name NAME,
7041 whose length is LENGTH. LANGUAGE is the specified language,
7042 or 0 if this file is to be passed to the linker. */
7044 static struct compiler *
7045 lookup_compiler (const char *name, size_t length, const char *language)
7047 struct compiler *cp;
7049 /* If this was specified by the user to be a linker input, indicate that. */
7050 if (language != 0 && language[0] == '*')
7053 /* Otherwise, look for the language, if one is spec'd. */
7056 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
7057 if (cp->suffix[0] == '@' && !strcmp (cp->suffix + 1, language))
7060 error ("language %s not recognized", language);
7064 /* Look for a suffix. */
7065 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
7067 if (/* The suffix `-' matches only the file name `-'. */
7068 (!strcmp (cp->suffix, "-") && !strcmp (name, "-"))
7069 || (strlen (cp->suffix) < length
7070 /* See if the suffix matches the end of NAME. */
7071 && !strcmp (cp->suffix,
7072 name + length - strlen (cp->suffix))
7077 #if defined (OS2) ||defined (HAVE_DOS_BASED_FILE_SYSTEM)
7078 /* Look again, but case-insensitively this time. */
7080 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
7082 if (/* The suffix `-' matches only the file name `-'. */
7083 (!strcmp (cp->suffix, "-") && !strcmp (name, "-"))
7084 || (strlen (cp->suffix) < length
7085 /* See if the suffix matches the end of NAME. */
7086 && ((!strcmp (cp->suffix,
7087 name + length - strlen (cp->suffix))
7088 || !strpbrk (cp->suffix, "ABCDEFGHIJKLMNOPQRSTUVWXYZ"))
7089 && !strcasecmp (cp->suffix,
7090 name + length - strlen (cp->suffix)))
7096 if (cp >= compilers)
7098 if (cp->spec[0] != '@')
7099 /* A non-alias entry: return it. */
7102 /* An alias entry maps a suffix to a language.
7103 Search for the language; pass 0 for NAME and LENGTH
7104 to avoid infinite recursion if language not found. */
7105 return lookup_compiler (NULL, 0, cp->spec + 1);
7111 save_string (const char *s, int len)
7113 char *result = XNEWVEC (char, len + 1);
7115 memcpy (result, s, len);
7121 pfatal_with_name (const char *name)
7123 perror_with_name (name);
7124 delete_temp_files ();
7129 perror_with_name (const char *name)
7131 error ("%s: %s", name, xstrerror (errno));
7134 /* Output an error message and exit. */
7137 fancy_abort (const char *file, int line, const char *func)
7139 fatal_ice ("internal gcc abort in %s, at %s:%d", func, file, line);
7142 /* Output an error message and exit. */
7145 fatal_ice (const char *cmsgid, ...)
7149 va_start (ap, cmsgid);
7151 fprintf (stderr, "%s: ", programname);
7152 vfprintf (stderr, _(cmsgid), ap);
7154 fprintf (stderr, "\n");
7155 delete_temp_files ();
7156 exit (pass_exit_codes ? ICE_EXIT_CODE : 1);
7160 fatal (const char *cmsgid, ...)
7164 va_start (ap, cmsgid);
7166 fprintf (stderr, "%s: ", programname);
7167 vfprintf (stderr, _(cmsgid), ap);
7169 fprintf (stderr, "\n");
7170 delete_temp_files ();
7174 /* The argument is actually c-format, not gcc-internal-format,
7175 but because functions with identical names are used through
7176 the rest of the compiler with gcc-internal-format, we just
7177 need to hope all users of these functions use the common
7178 subset between c-format and gcc-internal-format. */
7181 error (const char *gmsgid, ...)
7185 va_start (ap, gmsgid);
7186 fprintf (stderr, "%s: ", programname);
7187 vfprintf (stderr, _(gmsgid), ap);
7190 fprintf (stderr, "\n");
7194 notice (const char *cmsgid, ...)
7198 va_start (ap, cmsgid);
7199 vfprintf (stderr, _(cmsgid), ap);
7204 validate_switches_from_spec (const char *spec)
7206 const char *p = spec;
7209 if (c == '%' && (*p == '{' || *p == '<' || (*p == 'W' && *++p == '{')))
7210 /* We have a switch spec. */
7211 p = validate_switches (p + 1);
7215 validate_all_switches (void)
7217 struct compiler *comp;
7218 struct spec_list *spec;
7220 for (comp = compilers; comp->spec; comp++)
7221 validate_switches_from_spec (comp->spec);
7223 /* Look through the linked list of specs read from the specs file. */
7224 for (spec = specs; spec; spec = spec->next)
7225 validate_switches_from_spec (*spec->ptr_spec);
7227 validate_switches_from_spec (link_command_spec);
7230 /* Look at the switch-name that comes after START
7231 and mark as valid all supplied switches that match it. */
7234 validate_switches (const char *start)
7236 const char *p = start;
7240 bool suffix = false;
7241 bool starred = false;
7243 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
7252 if (*p == '.' || *p == ',')
7256 while (ISIDNUM (*p) || *p == '-' || *p == '+' || *p == '='
7257 || *p == ',' || *p == '.' || *p == '@')
7262 starred = true, p++;
7268 /* Mark all matching switches as valid. */
7269 for (i = 0; i < n_switches; i++)
7270 if (!strncmp (switches[i].part1, atom, len)
7271 && (starred || switches[i].part1[len] == 0))
7272 switches[i].validated = 1;
7276 if (*p && (p[-1] == '|' || p[-1] == '&'))
7279 if (*p && p[-1] == ':')
7281 while (*p && *p != ';' && *p != '}')
7286 if (*p == '{' || *p == '<')
7287 p = validate_switches (p+1);
7288 else if (p[0] == 'W' && p[1] == '{')
7289 p = validate_switches (p+2);
7296 if (*p && p[-1] == ';')
7310 static struct mdswitchstr *mdswitches;
7311 static int n_mdswitches;
7313 /* Check whether a particular argument was used. The first time we
7314 canonicalize the switches to keep only the ones we care about. */
7317 used_arg (const char *p, int len)
7322 const char *replace;
7327 static struct mswitchstr *mswitches;
7328 static int n_mswitches;
7333 struct mswitchstr *matches;
7337 /* Break multilib_matches into the component strings of string
7338 and replacement string. */
7339 for (q = multilib_matches; *q != '\0'; q++)
7344 = (struct mswitchstr *) alloca ((sizeof (struct mswitchstr)) * cnt);
7346 q = multilib_matches;
7355 fatal ("multilib spec '%s' is invalid", multilib_matches);
7359 matches[i].len = q - matches[i].str;
7361 matches[i].replace = ++q;
7362 while (*q != ';' && *q != '\0')
7365 goto invalid_matches;
7368 matches[i].rep_len = q - matches[i].replace;
7374 /* Now build a list of the replacement string for switches that we care
7375 about. Make sure we allocate at least one entry. This prevents
7376 xmalloc from calling fatal, and prevents us from re-executing this
7379 = XNEWVEC (struct mswitchstr, n_mdswitches + (n_switches ? n_switches : 1));
7380 for (i = 0; i < n_switches; i++)
7381 if ((switches[i].live_cond & SWITCH_IGNORE) == 0)
7383 int xlen = strlen (switches[i].part1);
7384 for (j = 0; j < cnt; j++)
7385 if (xlen == matches[j].len
7386 && ! strncmp (switches[i].part1, matches[j].str, xlen))
7388 mswitches[n_mswitches].str = matches[j].replace;
7389 mswitches[n_mswitches].len = matches[j].rep_len;
7390 mswitches[n_mswitches].replace = (char *) 0;
7391 mswitches[n_mswitches].rep_len = 0;
7397 /* Add MULTILIB_DEFAULTS switches too, as long as they were not present
7398 on the command line nor any options mutually incompatible with
7400 for (i = 0; i < n_mdswitches; i++)
7404 for (q = multilib_options; *q != '\0'; q++)
7410 while (strncmp (q, mdswitches[i].str, mdswitches[i].len) != 0
7411 || strchr (" /", q[mdswitches[i].len]) == NULL)
7413 while (*q != ' ' && *q != '/' && *q != '\0')
7420 if (*q != ' ' && *q != '\0')
7422 while (*r != ' ' && *r != '\0')
7425 while (*q != ' ' && *q != '/' && *q != '\0')
7428 if (used_arg (r, q - r))
7433 mswitches[n_mswitches].str = mdswitches[i].str;
7434 mswitches[n_mswitches].len = mdswitches[i].len;
7435 mswitches[n_mswitches].replace = (char *) 0;
7436 mswitches[n_mswitches].rep_len = 0;
7449 for (i = 0; i < n_mswitches; i++)
7450 if (len == mswitches[i].len && ! strncmp (p, mswitches[i].str, len))
7457 default_arg (const char *p, int len)
7461 for (i = 0; i < n_mdswitches; i++)
7462 if (len == mdswitches[i].len && ! strncmp (p, mdswitches[i].str, len))
7468 /* Work out the subdirectory to use based on the options. The format of
7469 multilib_select is a list of elements. Each element is a subdirectory
7470 name followed by a list of options followed by a semicolon. The format
7471 of multilib_exclusions is the same, but without the preceding
7472 directory. First gcc will check the exclusions, if none of the options
7473 beginning with an exclamation point are present, and all of the other
7474 options are present, then we will ignore this completely. Passing
7475 that, gcc will consider each multilib_select in turn using the same
7476 rules for matching the options. If a match is found, that subdirectory
7480 set_multilib_dir (void)
7483 unsigned int this_path_len;
7484 const char *this_path, *this_arg;
7485 const char *start, *end;
7487 int ok, ndfltok, first;
7490 start = multilib_defaults;
7491 while (*start == ' ' || *start == '\t')
7493 while (*start != '\0')
7496 while (*start != ' ' && *start != '\t' && *start != '\0')
7498 while (*start == ' ' || *start == '\t')
7506 mdswitches = XNEWVEC (struct mdswitchstr, n_mdswitches);
7507 for (start = multilib_defaults; *start != '\0'; start = end + 1)
7509 while (*start == ' ' || *start == '\t')
7515 for (end = start + 1;
7516 *end != ' ' && *end != '\t' && *end != '\0'; end++)
7519 obstack_grow (&multilib_obstack, start, end - start);
7520 obstack_1grow (&multilib_obstack, 0);
7521 mdswitches[i].str = XOBFINISH (&multilib_obstack, const char *);
7522 mdswitches[i++].len = end - start;
7529 p = multilib_exclusions;
7532 /* Ignore newlines. */
7539 /* Check the arguments. */
7546 fatal ("multilib exclusions '%s' is invalid",
7547 multilib_exclusions);
7557 while (*p != ' ' && *p != ';')
7560 goto invalid_exclusions;
7564 if (*this_arg != '!')
7572 ok = used_arg (this_arg, p - this_arg);
7587 p = multilib_select;
7590 /* Ignore newlines. */
7597 /* Get the initial path. */
7604 fatal ("multilib select '%s' is invalid",
7609 this_path_len = p - this_path;
7611 /* Check the arguments. */
7618 goto invalid_select;
7627 while (*p != ' ' && *p != ';')
7630 goto invalid_select;
7634 if (*this_arg != '!')
7642 /* If this is a default argument, we can just ignore it.
7643 This is true even if this_arg begins with '!'. Beginning
7644 with '!' does not mean that this argument is necessarily
7645 inappropriate for this library: it merely means that
7646 there is a more specific library which uses this
7647 argument. If this argument is a default, we need not
7648 consider that more specific library. */
7649 ok = used_arg (this_arg, p - this_arg);
7656 if (default_arg (this_arg, p - this_arg))
7665 if (this_path_len != 1
7666 || this_path[0] != '.')
7668 char *new_multilib_dir = XNEWVEC (char, this_path_len + 1);
7671 strncpy (new_multilib_dir, this_path, this_path_len);
7672 new_multilib_dir[this_path_len] = '\0';
7673 q = strchr (new_multilib_dir, ':');
7676 multilib_dir = new_multilib_dir;
7683 const char *q = this_path, *end = this_path + this_path_len;
7685 while (q < end && *q != ':')
7689 char *new_multilib_os_dir = XNEWVEC (char, end - q);
7690 memcpy (new_multilib_os_dir, q + 1, end - q - 1);
7691 new_multilib_os_dir[end - q - 1] = '\0';
7692 multilib_os_dir = new_multilib_os_dir;
7700 if (multilib_dir == NULL && multilib_os_dir != NULL
7701 && strcmp (multilib_os_dir, ".") == 0)
7703 free (CONST_CAST (char *, multilib_os_dir));
7704 multilib_os_dir = NULL;
7706 else if (multilib_dir != NULL && multilib_os_dir == NULL)
7707 multilib_os_dir = multilib_dir;
7710 /* Print out the multiple library subdirectory selection
7711 information. This prints out a series of lines. Each line looks
7712 like SUBDIRECTORY;@OPTION@OPTION, with as many options as is
7713 required. Only the desired options are printed out, the negative
7714 matches. The options are print without a leading dash. There are
7715 no spaces to make it easy to use the information in the shell.
7716 Each subdirectory is printed only once. This assumes the ordering
7717 generated by the genmultilib script. Also, we leave out ones that match
7721 print_multilib_info (void)
7723 const char *p = multilib_select;
7724 const char *last_path = 0, *this_path;
7726 unsigned int last_path_len = 0;
7731 /* Ignore newlines. */
7738 /* Get the initial path. */
7745 fatal ("multilib select '%s' is invalid", multilib_select);
7751 /* When --disable-multilib was used but target defines
7752 MULTILIB_OSDIRNAMES, entries starting with .: are there just
7753 to find multilib_os_dir, so skip them from output. */
7754 if (this_path[0] == '.' && this_path[1] == ':')
7757 /* Check for matches with the multilib_exclusions. We don't bother
7758 with the '!' in either list. If any of the exclusion rules match
7759 all of its options with the select rule, we skip it. */
7761 const char *e = multilib_exclusions;
7762 const char *this_arg;
7767 /* Ignore newlines. */
7774 /* Check the arguments. */
7783 fatal ("multilib exclusion '%s' is invalid",
7784 multilib_exclusions);
7795 while (*e != ' ' && *e != ';')
7798 goto invalid_exclusion;
7806 int len = e - this_arg;
7809 goto invalid_select;
7813 while (*q != ' ' && *q != ';')
7816 goto invalid_select;
7820 if (! strncmp (arg, this_arg,
7821 (len < q - arg) ? q - arg : len)
7822 || default_arg (this_arg, e - this_arg))
7852 /* If this is a duplicate, skip it. */
7853 skip = (last_path != 0
7854 && (unsigned int) (p - this_path) == last_path_len
7855 && ! strncmp (last_path, this_path, last_path_len));
7857 last_path = this_path;
7858 last_path_len = p - this_path;
7861 /* If this directory requires any default arguments, we can skip
7862 it. We will already have printed a directory identical to
7863 this one which does not require that default argument. */
7874 goto invalid_select;
7881 while (*q != ' ' && *q != ';')
7884 goto invalid_select;
7889 && default_arg (arg, q - arg))
7904 for (p1 = last_path; p1 < p && *p1 != ':'; p1++)
7915 goto invalid_select;
7923 use_arg = *p != '!';
7928 while (*p != ' ' && *p != ';')
7931 goto invalid_select;
7943 /* If there are extra options, print them now. */
7944 if (multilib_extra && *multilib_extra)
7946 int print_at = TRUE;
7949 for (q = multilib_extra; *q != '\0'; q++)
7970 /* getenv built-in spec function.
7972 Returns the value of the environment variable given by its first
7973 argument, concatenated with the second argument. If the
7974 environment variable is not defined, a fatal error is issued. */
7977 getenv_spec_function (int argc, const char **argv)
7987 value = getenv (argv[0]);
7989 fatal ("environment variable \"%s\" not defined", argv[0]);
7991 /* We have to escape every character of the environment variable so
7992 they are not interpreted as active spec characters. A
7993 particularly painful case is when we are reading a variable
7994 holding a windows path complete with \ separators. */
7995 len = strlen (value) * 2 + strlen (argv[1]) + 1;
7996 result = XNEWVAR (char, len);
7997 for (ptr = result; *value; ptr += 2)
8003 strcpy (ptr, argv[1]);
8008 /* if-exists built-in spec function.
8010 Checks to see if the file specified by the absolute pathname in
8011 ARGS exists. Returns that pathname if found.
8013 The usual use for this function is to check for a library file
8014 (whose name has been expanded with %s). */
8017 if_exists_spec_function (int argc, const char **argv)
8019 /* Must have only one argument. */
8020 if (argc == 1 && IS_ABSOLUTE_PATH (argv[0]) && ! access (argv[0], R_OK))
8026 /* if-exists-else built-in spec function.
8028 This is like if-exists, but takes an additional argument which
8029 is returned if the first argument does not exist. */
8032 if_exists_else_spec_function (int argc, const char **argv)
8034 /* Must have exactly two arguments. */
8038 if (IS_ABSOLUTE_PATH (argv[0]) && ! access (argv[0], R_OK))
8044 /* replace-outfile built-in spec function.
8046 This looks for the first argument in the outfiles array's name and
8047 replaces it with the second argument. */
8050 replace_outfile_spec_function (int argc, const char **argv)
8053 /* Must have exactly two arguments. */
8057 for (i = 0; i < n_infiles; i++)
8059 if (outfiles[i] && !strcmp (outfiles[i], argv[0]))
8060 outfiles[i] = xstrdup (argv[1]);
8065 /* Given two version numbers, compares the two numbers.
8066 A version number must match the regular expression
8067 ([1-9][0-9]*|0)(\.([1-9][0-9]*|0))*
8070 compare_version_strings (const char *v1, const char *v2)
8075 if (regcomp (&r, "^([1-9][0-9]*|0)(\\.([1-9][0-9]*|0))*$",
8076 REG_EXTENDED | REG_NOSUB) != 0)
8078 rresult = regexec (&r, v1, 0, NULL, 0);
8079 if (rresult == REG_NOMATCH)
8080 fatal ("invalid version number `%s'", v1);
8081 else if (rresult != 0)
8083 rresult = regexec (&r, v2, 0, NULL, 0);
8084 if (rresult == REG_NOMATCH)
8085 fatal ("invalid version number `%s'", v2);
8086 else if (rresult != 0)
8089 return strverscmp (v1, v2);
8093 /* version_compare built-in spec function.
8095 This takes an argument of the following form:
8097 <comparison-op> <arg1> [<arg2>] <switch> <result>
8099 and produces "result" if the comparison evaluates to true,
8100 and nothing if it doesn't.
8102 The supported <comparison-op> values are:
8104 >= true if switch is a later (or same) version than arg1
8106 < true if switch is an earlier version than arg1
8108 >< true if switch is arg1 or later, and earlier than arg2
8109 <> true if switch is earlier than arg1 or is arg2 or later
8111 If the switch is not present, the condition is false unless
8112 the first character of the <comparison-op> is '!'.
8115 %:version-compare(>= 10.3 mmacosx-version-min= -lmx)
8116 adds -lmx if -mmacosx-version-min=10.3.9 was passed. */
8119 version_compare_spec_function (int argc, const char **argv)
8123 const char *switch_value = NULL;
8128 fatal ("too few arguments to %%:version-compare");
8129 if (argv[0][0] == '\0')
8131 if ((argv[0][1] == '<' || argv[0][1] == '>') && argv[0][0] != '!')
8133 if (argc != nargs + 3)
8134 fatal ("too many arguments to %%:version-compare");
8136 switch_len = strlen (argv[nargs + 1]);
8137 for (i = 0; i < n_switches; i++)
8138 if (!strncmp (switches[i].part1, argv[nargs + 1], switch_len)
8139 && check_live_switch (i, switch_len))
8140 switch_value = switches[i].part1 + switch_len;
8142 if (switch_value == NULL)
8146 comp1 = compare_version_strings (switch_value, argv[1]);
8148 comp2 = compare_version_strings (switch_value, argv[2]);
8150 comp2 = -1; /* This value unused. */
8153 switch (argv[0][0] << 8 | argv[0][1])
8155 case '>' << 8 | '=':
8156 result = comp1 >= 0;
8158 case '!' << 8 | '<':
8159 result = comp1 >= 0 || switch_value == NULL;
8164 case '!' << 8 | '>':
8165 result = comp1 < 0 || switch_value == NULL;
8167 case '>' << 8 | '<':
8168 result = comp1 >= 0 && comp2 < 0;
8170 case '<' << 8 | '>':
8171 result = comp1 < 0 || comp2 >= 0;
8175 fatal ("unknown operator '%s' in %%:version-compare", argv[0]);
8180 return argv[nargs + 2];
8183 /* %:include builtin spec function. This differs from %include in that it
8184 can be nested inside a spec, and thus be conditionalized. It takes
8185 one argument, the filename, and looks for it in the startfile path.
8186 The result is always NULL, i.e. an empty expansion. */
8189 include_spec_function (int argc, const char **argv)
8196 file = find_a_file (&startfile_prefixes, argv[0], R_OK, true);
8197 read_specs (file ? file : argv[0], FALSE);
8202 /* %:print-asm-header spec function. Print a banner to say that the
8203 following output is from the assembler. */
8206 print_asm_header_spec_function (int arg ATTRIBUTE_UNUSED,
8207 const char **argv ATTRIBUTE_UNUSED)
8209 printf (_("Assembler options\n=================\n\n"));
8210 printf (_("Use \"-Wa,OPTION\" to pass \"OPTION\" to the assembler.\n\n"));