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
88 # include <sys/mman.h>
90 /* This is on Solaris. */
91 # include <sys/types.h>
96 # define MAP_FAILED ((void *)-1)
99 /* By default there is no special suffix for target executables. */
100 /* FIXME: when autoconf is fixed, remove the host check - dj */
101 #if defined(TARGET_EXECUTABLE_SUFFIX) && defined(HOST_EXECUTABLE_SUFFIX)
102 #define HAVE_TARGET_EXECUTABLE_SUFFIX
105 /* By default there is no special suffix for host executables. */
106 #ifdef HOST_EXECUTABLE_SUFFIX
107 #define HAVE_HOST_EXECUTABLE_SUFFIX
109 #define HOST_EXECUTABLE_SUFFIX ""
112 /* By default, the suffix for target object files is ".o". */
113 #ifdef TARGET_OBJECT_SUFFIX
114 #define HAVE_TARGET_OBJECT_SUFFIX
116 #define TARGET_OBJECT_SUFFIX ".o"
119 static const char dir_separator_str[] = { DIR_SEPARATOR, 0 };
121 /* Most every one is fine with LIBRARY_PATH. For some, it conflicts. */
122 #ifndef LIBRARY_PATH_ENV
123 #define LIBRARY_PATH_ENV "LIBRARY_PATH"
127 #define kill(p,s) raise(s)
130 /* If a stage of compilation returns an exit status >= 1,
131 compilation of that file ceases. */
133 #define MIN_FATAL_STATUS 1
135 /* Flag set by cppspec.c to 1. */
138 /* Flag set to nonzero if an @file argument has been supplied to gcc. */
139 static bool at_file_supplied;
141 /* Flag saying to pass the greatest exit code returned by a sub-process
142 to the calling program. */
143 static int pass_exit_codes;
145 /* Definition of string containing the arguments given to configure. */
146 #include "configargs.h"
148 /* Flag saying to print the directories gcc will search through looking for
149 programs, libraries, etc. */
151 static int print_search_dirs;
153 /* Flag saying to print the full filename of this file
154 as found through our usual search mechanism. */
156 static const char *print_file_name = NULL;
158 /* As print_file_name, but search for executable file. */
160 static const char *print_prog_name = NULL;
162 /* Flag saying to print the relative path we'd use to
163 find libgcc.a given the current compiler flags. */
165 static int print_multi_directory;
167 static int print_sysroot;
169 /* Flag saying to print the relative path we'd use to
170 find OS libraries given the current compiler flags. */
172 static int print_multi_os_directory;
174 /* Flag saying to print the list of subdirectories and
175 compiler flags used to select them in a standard form. */
177 static int print_multi_lib;
179 /* Flag saying to print the command line options understood by gcc and its
182 static int print_help_list;
184 /* Flag saying to print the version of gcc and its sub-processes. */
186 static int print_version;
188 /* Flag saying to print the sysroot suffix used for searching for
191 static int print_sysroot_headers_suffix;
193 /* Flag indicating whether we should print the command and arguments */
195 static int verbose_flag;
197 /* Flag indicating whether we should ONLY print the command and
198 arguments (like verbose_flag) without executing the command.
199 Displayed arguments are quoted so that the generated command
200 line is suitable for execution. This is intended for use in
201 shell scripts to capture the driver-generated command line. */
202 static int verbose_only_flag;
204 /* Flag indicating how to print command line options of sub-processes. */
206 static int print_subprocess_help;
208 /* Flag indicating whether we should report subprocess execution times
209 (if this is supported by the system - see pexecute.c). */
211 static int report_times;
213 /* Whether we should report subprocess execution times to a file. */
215 FILE *report_times_to_file = NULL;
217 /* Nonzero means place this string before uses of /, so that include
218 and library files can be found in an alternate location. */
220 #ifdef TARGET_SYSTEM_ROOT
221 static const char *target_system_root = TARGET_SYSTEM_ROOT;
223 static const char *target_system_root = 0;
226 /* Nonzero means pass the updated target_system_root to the compiler. */
228 static int target_system_root_changed;
230 /* Nonzero means append this string to target_system_root. */
232 static const char *target_sysroot_suffix = 0;
234 /* Nonzero means append this string to target_system_root for headers. */
236 static const char *target_sysroot_hdrs_suffix = 0;
238 /* Nonzero means write "temp" files in source directory
239 and use the source file's name in them, and don't delete them. */
241 static enum save_temps {
242 SAVE_TEMPS_NONE, /* no -save-temps */
243 SAVE_TEMPS_CWD, /* -save-temps in current directory */
244 SAVE_TEMPS_OBJ /* -save-temps in object directory */
247 /* Output file to use to get the object directory for -save-temps=obj */
248 static char *save_temps_prefix = 0;
249 static size_t save_temps_length = 0;
251 /* Nonzero means pass multiple source files to the compiler at one time. */
253 static int combine_flag = 0;
255 /* Nonzero means use pipes to communicate between subprocesses.
256 Overridden by either of the above two flags. */
258 static int use_pipes;
260 /* The compiler version. */
262 static const char *compiler_version;
264 /* The target version specified with -V */
266 static const char *const spec_version = DEFAULT_TARGET_VERSION;
268 /* The target machine specified with -b. */
270 static const char *spec_machine = DEFAULT_TARGET_MACHINE;
272 /* Nonzero if cross-compiling.
273 When -b is used, the value comes from the `specs' file. */
275 #ifdef CROSS_DIRECTORY_STRUCTURE
276 static const char *cross_compile = "1";
278 static const char *cross_compile = "0";
281 #ifdef MODIFY_TARGET_NAME
283 /* Information on how to alter the target name based on a command-line
284 switch. The only case we support now is simply appending or deleting a
285 string to or from the end of the first part of the configuration name. */
287 enum add_del {ADD, DELETE};
289 static const struct modify_target
291 const char *const sw;
292 const enum add_del add_del;
293 const char *const str;
295 modify_target[] = MODIFY_TARGET_NAME;
298 /* The number of errors that have occurred; the link phase will not be
299 run if this is nonzero. */
300 static int error_count = 0;
302 /* Greatest exit code of sub-processes that has been encountered up to
304 static int greatest_status = 1;
306 /* This is the obstack which we use to allocate many strings. */
308 static struct obstack obstack;
310 /* This is the obstack to build an environment variable to pass to
311 collect2 that describes all of the relevant switches of what to
312 pass the compiler in building the list of pointers to constructors
315 static struct obstack collect_obstack;
317 /* This is a list of a wrapper program and its arguments.
318 e.g. wrapper_string of "strace,-c"
319 will cause all programs to run as
320 strace -c program arguments
323 static const char *wrapper_string;
325 /* Forward declaration for prototypes. */
329 static void init_spec (void);
330 static void store_arg (const char *, int, int);
331 static void insert_wrapper (const char *);
332 static char *load_specs (const char *);
333 static void read_specs (const char *, int);
334 static void set_spec (const char *, const char *);
335 static struct compiler *lookup_compiler (const char *, size_t, const char *);
336 static char *build_search_list (const struct path_prefix *, const char *,
338 static void xputenv (const char *);
339 static void putenv_from_prefixes (const struct path_prefix *, const char *,
341 static int access_check (const char *, int);
342 static char *find_a_file (const struct path_prefix *, const char *, int, bool);
343 static void add_prefix (struct path_prefix *, const char *, const char *,
345 static void add_sysrooted_prefix (struct path_prefix *, const char *,
346 const char *, int, int, int);
347 static void translate_options (int *, const char *const **);
348 static char *skip_whitespace (char *);
349 static void delete_if_ordinary (const char *);
350 static void delete_temp_files (void);
351 static void delete_failure_queue (void);
352 static void clear_failure_queue (void);
353 static int check_live_switch (int, int);
354 static const char *handle_braces (const char *);
355 static inline bool input_suffix_matches (const char *, const char *);
356 static inline bool switch_matches (const char *, const char *, int);
357 static inline void mark_matching_switches (const char *, const char *, int);
358 static inline void process_marked_switches (void);
359 static const char *process_brace_body (const char *, const char *, const char *, int, int);
360 static const struct spec_function *lookup_spec_function (const char *);
361 static const char *eval_spec_function (const char *, const char *);
362 static const char *handle_spec_function (const char *);
363 static char *save_string (const char *, int);
364 static void set_collect_gcc_options (void);
365 static int do_spec_1 (const char *, int, const char *);
366 static int do_spec_2 (const char *);
367 static void do_option_spec (const char *, const char *);
368 static void do_self_spec (const char *);
369 static const char *find_file (const char *);
370 static int is_directory (const char *, bool);
371 static const char *validate_switches (const char *);
372 static void validate_all_switches (void);
373 static inline void validate_switches_from_spec (const char *);
374 static void give_switch (int, int);
375 static int used_arg (const char *, int);
376 static int default_arg (const char *, int);
377 static void set_multilib_dir (void);
378 static void print_multilib_info (void);
379 static void perror_with_name (const char *);
380 static void fatal_ice (const char *, ...) ATTRIBUTE_PRINTF_1 ATTRIBUTE_NORETURN;
381 static void notice (const char *, ...) ATTRIBUTE_PRINTF_1;
382 static void display_help (void);
383 static void add_preprocessor_option (const char *, int);
384 static void add_assembler_option (const char *, int);
385 static void add_linker_option (const char *, int);
386 static void process_command (int, const char **);
387 static int execute (void);
388 static void alloc_args (void);
389 static void clear_args (void);
390 static void fatal_error (int);
391 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
392 static void init_gcc_specs (struct obstack *, const char *, const char *,
395 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
396 static const char *convert_filename (const char *, int, int);
399 static const char *getenv_spec_function (int, const char **);
400 static const char *if_exists_spec_function (int, const char **);
401 static const char *if_exists_else_spec_function (int, const char **);
402 static const char *replace_outfile_spec_function (int, const char **);
403 static const char *version_compare_spec_function (int, const char **);
404 static const char *include_spec_function (int, const char **);
405 static const char *print_asm_header_spec_function (int, const char **);
406 static const char *compare_debug_dump_opt_spec_function (int, const char **);
407 static const char *compare_debug_self_opt_spec_function (int, const char **);
408 static const char *compare_debug_auxbase_opt_spec_function (int, const char **);
410 /* The Specs Language
412 Specs are strings containing lines, each of which (if not blank)
413 is made up of a program name, and arguments separated by spaces.
414 The program name must be exact and start from root, since no path
415 is searched and it is unreliable to depend on the current working directory.
416 Redirection of input or output is not supported; the subprograms must
417 accept filenames saying what files to read and write.
419 In addition, the specs can contain %-sequences to substitute variable text
420 or for conditional text. Here is a table of all defined %-sequences.
421 Note that spaces are not generated automatically around the results of
422 expanding these sequences; therefore, you can concatenate them together
423 or with constant text in a single argument.
425 %% substitute one % into the program name or argument.
426 %i substitute the name of the input file being processed.
427 %b substitute the basename of the input file being processed.
428 This is the substring up to (and not including) the last period
429 and not including the directory unless -save-temps was specified
430 to put temporaries in a different location.
431 %B same as %b, but include the file suffix (text after the last period).
433 substitute a file name that has suffix SUFFIX and is chosen
434 once per compilation, and mark the argument a la %d. To reduce
435 exposure to denial-of-service attacks, the file name is now
436 chosen in a way that is hard to predict even when previously
437 chosen file names are known. For example, `%g.s ... %g.o ... %g.s'
438 might turn into `ccUVUUAU.s ccXYAXZ12.o ccUVUUAU.s'. SUFFIX matches
439 the regexp "[.0-9A-Za-z]*%O"; "%O" is treated exactly as if it
440 had been pre-processed. Previously, %g was simply substituted
441 with a file name chosen once per compilation, without regard
442 to any appended suffix (which was therefore treated just like
443 ordinary text), making such attacks more likely to succeed.
445 like %g, but if -pipe is in effect, expands simply to "-".
447 like %g, but if -pipe is in effect, expands to nothing. (We have both
448 %| and %m to accommodate differences between system assemblers; see
449 the AS_NEEDS_DASH_FOR_PIPED_INPUT target macro.)
451 like %g, but generates a new temporary file name even if %uSUFFIX
454 substitutes the last file name generated with %uSUFFIX, generating a
455 new one if there is no such last file name. In the absence of any
456 %uSUFFIX, this is just like %gSUFFIX, except they don't share
457 the same suffix "space", so `%g.s ... %U.s ... %g.s ... %U.s'
458 would involve the generation of two distinct file names, one
459 for each `%g.s' and another for each `%U.s'. Previously, %U was
460 simply substituted with a file name chosen for the previous %u,
461 without regard to any appended suffix.
463 substitutes the name of the HOST_BIT_BUCKET, if any, and if it is
464 writable, and if save-temps is off; otherwise, substitute the name
465 of a temporary file, just like %u. This temporary file is not
466 meant for communication between processes, but rather as a junk
469 substitutes .SUFFIX for the suffixes of a matched switch's args when
470 it is subsequently output with %*. SUFFIX is terminated by the next
472 %d marks the argument containing or following the %d as a
473 temporary file name, so that that file will be deleted if GCC exits
474 successfully. Unlike %g, this contributes no text to the argument.
475 %w marks the argument containing or following the %w as the
476 "output file" of this compilation. This puts the argument
477 into the sequence of arguments that %o will substitute later.
478 %V indicates that this compilation produces no "output file".
480 like %{...} but mark last argument supplied within
481 as a file to be deleted on failure.
482 %o substitutes the names of all the output files, with spaces
483 automatically placed around them. You should write spaces
484 around the %o as well or the results are undefined.
485 %o is for use in the specs for running the linker.
486 Input files whose names have no recognized suffix are not compiled
487 at all, but they are included among the output files, so they will
489 %O substitutes the suffix for object files. Note that this is
490 handled specially when it immediately follows %g, %u, or %U
491 (with or without a suffix argument) because of the need for
492 those to form complete file names. The handling is such that
493 %O is treated exactly as if it had already been substituted,
494 except that %g, %u, and %U do not currently support additional
495 SUFFIX characters following %O as they would following, for
497 %I Substitute any of -iprefix (made from GCC_EXEC_PREFIX), -isysroot
498 (made from TARGET_SYSTEM_ROOT), -isystem (made from COMPILER_PATH
499 and -B options) and -imultilib as necessary.
500 %s current argument is the name of a library or startup file of some sort.
501 Search for that file in a standard list of directories
502 and substitute the full name found.
503 %eSTR Print STR as an error message. STR is terminated by a newline.
504 Use this when inconsistent options are detected.
505 %nSTR Print STR as a notice. STR is terminated by a newline.
506 %x{OPTION} Accumulate an option for %X.
507 %X Output the accumulated linker options specified by compilations.
508 %Y Output the accumulated assembler options specified by compilations.
509 %Z Output the accumulated preprocessor options specified by compilations.
510 %a process ASM_SPEC as a spec.
511 This allows config.h to specify part of the spec for running as.
512 %A process ASM_FINAL_SPEC as a spec. A capital A is actually
513 used here. This can be used to run a post-processor after the
514 assembler has done its job.
515 %D Dump out a -L option for each directory in startfile_prefixes.
516 If multilib_dir is set, extra entries are generated with it affixed.
517 %l process LINK_SPEC as a spec.
518 %L process LIB_SPEC as a spec.
519 %G process LIBGCC_SPEC as a spec.
520 %R Output the concatenation of target_system_root and
521 target_sysroot_suffix.
522 %S process STARTFILE_SPEC as a spec. A capital S is actually used here.
523 %E process ENDFILE_SPEC as a spec. A capital E is actually used here.
524 %C process CPP_SPEC as a spec.
525 %1 process CC1_SPEC as a spec.
526 %2 process CC1PLUS_SPEC as a spec.
527 %* substitute the variable part of a matched option. (See below.)
528 Note that each comma in the substituted string is replaced by
530 %<S remove all occurrences of -S from the command line.
531 Note - this command is position dependent. % commands in the
532 spec string before this one will see -S, % commands in the
533 spec string after this one will not.
534 %<S* remove all occurrences of all switches beginning with -S from the
537 Call the named function FUNCTION, passing it ARGS. ARGS is
538 first processed as a nested spec string, then split into an
539 argument vector in the usual fashion. The function returns
540 a string which is processed as if it had appeared literally
541 as part of the current spec.
542 %{S} substitutes the -S switch, if that switch was given to GCC.
543 If that switch was not specified, this substitutes nothing.
544 Here S is a metasyntactic variable.
545 %{S*} substitutes all the switches specified to GCC whose names start
546 with -S. This is used for -o, -I, etc; switches that take
547 arguments. GCC considers `-o foo' as being one switch whose
548 name starts with `o'. %{o*} would substitute this text,
549 including the space; thus, two arguments would be generated.
550 %{S*&T*} likewise, but preserve order of S and T options (the order
551 of S and T in the spec is not significant). Can be any number
552 of ampersand-separated variables; for each the wild card is
553 optional. Useful for CPP as %{D*&U*&A*}.
555 %{S:X} substitutes X, if the -S switch was given to GCC.
556 %{!S:X} substitutes X, if the -S switch was NOT given to GCC.
557 %{S*:X} substitutes X if one or more switches whose names start
558 with -S was given to GCC. Normally X is substituted only
559 once, no matter how many such switches appeared. However,
560 if %* appears somewhere in X, then X will be substituted
561 once for each matching switch, with the %* replaced by the
562 part of that switch that matched the '*'.
563 %{.S:X} substitutes X, if processing a file with suffix S.
564 %{!.S:X} substitutes X, if NOT processing a file with suffix S.
565 %{,S:X} substitutes X, if processing a file which will use spec S.
566 %{!,S:X} substitutes X, if NOT processing a file which will use spec S.
568 %{S|T:X} substitutes X if either -S or -T was given to GCC. This may be
569 combined with '!', '.', ',', and '*' as above binding stronger
571 If %* appears in X, all of the alternatives must be starred, and
572 only the first matching alternative is substituted.
573 %{S:X; if S was given to GCC, substitutes X;
574 T:Y; else if T was given to GCC, substitutes Y;
575 :D} else substitutes D. There can be as many clauses as you need.
576 This may be combined with '.', '!', ',', '|', and '*' as above.
578 %(Spec) processes a specification defined in a specs file as *Spec:
579 %[Spec] as above, but put __ around -D arguments
581 The conditional text X in a %{S:X} or similar construct may contain
582 other nested % constructs or spaces, or even newlines. They are
583 processed as usual, as described above. Trailing white space in X is
584 ignored. White space may also appear anywhere on the left side of the
585 colon in these constructs, except between . or * and the corresponding
588 The -O, -f, -m, and -W switches are handled specifically in these
589 constructs. If another value of -O or the negated form of a -f, -m, or
590 -W switch is found later in the command line, the earlier switch
591 value is ignored, except with {S*} where S is just one letter; this
592 passes all matching options.
594 The character | at the beginning of the predicate text is used to indicate
595 that a command should be piped to the following command, but only if -pipe
598 Note that it is built into GCC which switches take arguments and which
599 do not. You might think it would be useful to generalize this to
600 allow each compiler's spec to say which switches take arguments. But
601 this cannot be done in a consistent fashion. GCC cannot even decide
602 which input files have been specified without knowing which switches
603 take arguments, and it must know which input files to compile in order
604 to tell which compilers to run.
606 GCC also knows implicitly that arguments starting in `-l' are to be
607 treated as compiler output files, and passed to the linker in their
608 proper position among the other output files. */
610 /* Define the macros used for specs %a, %l, %L, %S, %C, %1. */
612 /* config.h can define ASM_SPEC to provide extra args to the assembler
613 or extra switch-translations. */
618 /* config.h can define ASM_FINAL_SPEC to run a post processor after
619 the assembler has run. */
620 #ifndef ASM_FINAL_SPEC
621 #define ASM_FINAL_SPEC ""
624 /* config.h can define CPP_SPEC to provide extra args to the C preprocessor
625 or extra switch-translations. */
630 /* config.h can define CC1_SPEC to provide extra args to cc1 and cc1plus
631 or extra switch-translations. */
636 /* config.h can define CC1PLUS_SPEC to provide extra args to cc1plus
637 or extra switch-translations. */
639 #define CC1PLUS_SPEC ""
642 /* config.h can define LINK_SPEC to provide extra args to the linker
643 or extra switch-translations. */
648 /* config.h can define LIB_SPEC to override the default libraries. */
650 #define LIB_SPEC "%{!shared:%{g*:-lg} %{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p}}"
655 /* XXX: valid only for GNU ld */
656 /* XXX: should exactly match hooks provided by libmudflap.a */
657 #define MFWRAP_SPEC " %{static: %{fmudflap|fmudflapth: \
658 --wrap=malloc --wrap=free --wrap=calloc --wrap=realloc\
659 --wrap=mmap --wrap=munmap --wrap=alloca\
660 } %{fmudflapth: --wrap=pthread_create\
661 }} %{fmudflap|fmudflapth: --wrap=main}"
664 #define MFLIB_SPEC "%{fmudflap|fmudflapth: -export-dynamic}"
667 /* config.h can define LIBGCC_SPEC to override how and when libgcc.a is
670 #if defined(REAL_LIBGCC_SPEC)
671 #define LIBGCC_SPEC REAL_LIBGCC_SPEC
672 #elif defined(LINK_LIBGCC_SPECIAL_1)
673 /* Have gcc do the search for libgcc.a. */
674 #define LIBGCC_SPEC "libgcc.a%s"
676 #define LIBGCC_SPEC "-lgcc"
680 /* config.h can define STARTFILE_SPEC to override the default crt0 files. */
681 #ifndef STARTFILE_SPEC
682 #define STARTFILE_SPEC \
683 "%{!shared:%{pg:gcrt0%O%s}%{!pg:%{p:mcrt0%O%s}%{!p:crt0%O%s}}}"
686 /* config.h can define SWITCHES_NEED_SPACES to control which options
687 require spaces between the option and the argument. */
688 #ifndef SWITCHES_NEED_SPACES
689 #define SWITCHES_NEED_SPACES ""
692 /* config.h can define ENDFILE_SPEC to override the default crtn files. */
694 #define ENDFILE_SPEC ""
698 #define LINKER_NAME "collect2"
701 #ifdef HAVE_AS_DEBUG_PREFIX_MAP
702 #define ASM_MAP " %{fdebug-prefix-map=*:--debug-prefix-map %*}"
707 /* Define ASM_DEBUG_SPEC to be a spec suitable for translating '-g'
709 #ifndef ASM_DEBUG_SPEC
710 # if defined(DBX_DEBUGGING_INFO) && defined(DWARF2_DEBUGGING_INFO) \
711 && defined(HAVE_AS_GDWARF2_DEBUG_FLAG) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
712 # define ASM_DEBUG_SPEC \
713 (PREFERRED_DEBUGGING_TYPE == DBX_DEBUG \
714 ? "%{!g0:%{gdwarf-2*:--gdwarf2}%{!gdwarf-2*:%{g*:--gstabs}}}" ASM_MAP \
715 : "%{!g0:%{gstabs*:--gstabs}%{!gstabs*:%{g*:--gdwarf2}}}" ASM_MAP)
717 # if defined(DBX_DEBUGGING_INFO) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
718 # define ASM_DEBUG_SPEC "%{g*:%{!g0:--gstabs}}" ASM_MAP
720 # if defined(DWARF2_DEBUGGING_INFO) && defined(HAVE_AS_GDWARF2_DEBUG_FLAG)
721 # define ASM_DEBUG_SPEC "%{g*:%{!g0:--gdwarf2}}" ASM_MAP
725 #ifndef ASM_DEBUG_SPEC
726 # define ASM_DEBUG_SPEC ""
729 /* Here is the spec for running the linker, after compiling all files. */
731 /* This is overridable by the target in case they need to specify the
732 -lgcc and -lc order specially, yet not require them to override all
733 of LINK_COMMAND_SPEC. */
734 #ifndef LINK_GCC_C_SEQUENCE_SPEC
735 #define LINK_GCC_C_SEQUENCE_SPEC "%G %L %G"
738 #ifndef LINK_SSP_SPEC
739 #ifdef TARGET_LIBC_PROVIDES_SSP
740 #define LINK_SSP_SPEC "%{fstack-protector:}"
742 #define LINK_SSP_SPEC "%{fstack-protector|fstack-protector-all:-lssp_nonshared -lssp}"
746 #ifndef LINK_PIE_SPEC
748 #define LINK_PIE_SPEC "%{pie:-pie} "
750 #define LINK_PIE_SPEC "%{pie:} "
754 #ifndef LINK_BUILDID_SPEC
755 # if defined(HAVE_LD_BUILDID) && defined(ENABLE_LD_BUILDID)
756 # define LINK_BUILDID_SPEC "%{!r:--build-id} "
761 /* -u* was put back because both BSD and SysV seem to support it. */
762 /* %{static:} simply prevents an error message if the target machine
763 doesn't handle -static. */
764 /* We want %{T*} after %{L*} and %D so that it can be used to specify linker
765 scripts which exist in user specified directories, or in standard
767 #ifndef LINK_COMMAND_SPEC
768 #define LINK_COMMAND_SPEC "\
769 %{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:\
770 %(linker) %l " LINK_PIE_SPEC "%X %{o*} %{A} %{d} %{e*} %{m} %{N} %{n} %{r}\
771 %{s} %{t} %{u*} %{x} %{z} %{Z} %{!A:%{!nostdlib:%{!nostartfiles:%S}}}\
772 %{static:} %{L*} %(mfwrap) %(link_libgcc) %o\
773 %{fopenmp|ftree-parallelize-loops=*:%:include(libgomp.spec)%(link_gomp)} %(mflib)\
774 %{fprofile-arcs|fprofile-generate*|coverage:-lgcov}\
775 %{!nostdlib:%{!nodefaultlibs:%(link_ssp) %(link_gcc_c_sequence)}}\
776 %{!A:%{!nostdlib:%{!nostartfiles:%E}}} %{T*} }}}}}}"
779 #ifndef LINK_LIBGCC_SPEC
780 /* Generate -L options for startfile prefix list. */
781 # define LINK_LIBGCC_SPEC "%D"
784 #ifndef STARTFILE_PREFIX_SPEC
785 # define STARTFILE_PREFIX_SPEC ""
789 # define SYSROOT_SPEC "--sysroot=%R"
792 #ifndef SYSROOT_SUFFIX_SPEC
793 # define SYSROOT_SUFFIX_SPEC ""
796 #ifndef SYSROOT_HEADERS_SUFFIX_SPEC
797 # define SYSROOT_HEADERS_SUFFIX_SPEC ""
800 static const char *asm_debug;
801 static const char *cpp_spec = CPP_SPEC;
802 static const char *cc1_spec = CC1_SPEC;
803 static const char *cc1plus_spec = CC1PLUS_SPEC;
804 static const char *link_gcc_c_sequence_spec = LINK_GCC_C_SEQUENCE_SPEC;
805 static const char *link_ssp_spec = LINK_SSP_SPEC;
806 static const char *asm_spec = ASM_SPEC;
807 static const char *asm_final_spec = ASM_FINAL_SPEC;
808 static const char *link_spec = LINK_SPEC;
809 static const char *lib_spec = LIB_SPEC;
810 static const char *mfwrap_spec = MFWRAP_SPEC;
811 static const char *mflib_spec = MFLIB_SPEC;
812 static const char *link_gomp_spec = "";
813 static const char *libgcc_spec = LIBGCC_SPEC;
814 static const char *endfile_spec = ENDFILE_SPEC;
815 static const char *startfile_spec = STARTFILE_SPEC;
816 static const char *switches_need_spaces = SWITCHES_NEED_SPACES;
817 static const char *linker_name_spec = LINKER_NAME;
818 static const char *link_command_spec = LINK_COMMAND_SPEC;
819 static const char *link_libgcc_spec = LINK_LIBGCC_SPEC;
820 static const char *startfile_prefix_spec = STARTFILE_PREFIX_SPEC;
821 static const char *sysroot_spec = SYSROOT_SPEC;
822 static const char *sysroot_suffix_spec = SYSROOT_SUFFIX_SPEC;
823 static const char *sysroot_hdrs_suffix_spec = SYSROOT_HEADERS_SUFFIX_SPEC;
825 /* Standard options to cpp, cc1, and as, to reduce duplication in specs.
826 There should be no need to override these in target dependent files,
827 but we need to copy them to the specs file so that newer versions
828 of the GCC driver can correctly drive older tool chains with the
829 appropriate -B options. */
831 /* When cpplib handles traditional preprocessing, get rid of this, and
832 call cc1 (or cc1obj in objc/lang-specs.h) from the main specs so
833 that we default the front end language better. */
834 static const char *trad_capable_cpp =
835 "cc1 -E %{traditional|ftraditional|traditional-cpp:-traditional-cpp}";
837 /* We don't wrap .d files in %W{} since a missing .d file, and
838 therefore no dependency entry, confuses make into thinking a .o
839 file that happens to exist is up-to-date. */
840 static const char *cpp_unique_options =
841 "%{C|CC:%{!E:%eGCC does not support -C or -CC without -E}}\
842 %{!Q:-quiet} %{nostdinc*} %{C} %{CC} %{v} %{I*&F*} %{P} %I\
843 %{MD:-MD %{!o:%b.d}%{o*:%.d%*}}\
844 %{MMD:-MMD %{!o:%b.d}%{o*:%.d%*}}\
845 %{M} %{MM} %{MF*} %{MG} %{MP} %{MQ*} %{MT*}\
846 %{!E:%{!M:%{!MM:%{!MT:%{!MQ:%{MD|MMD:%{o*:-MQ %*}}}}}}}\
847 %{remap} %{g3|ggdb3|gstabs3|gcoff3|gxcoff3|gvms3:-dD}\
848 %{H} %C %{D*&U*&A*} %{i*} %Z %i\
849 %{fmudflap:-D_MUDFLAP -include mf-runtime.h}\
850 %{fmudflapth:-D_MUDFLAP -D_MUDFLAPTH -include mf-runtime.h}\
853 /* This contains cpp options which are common with cc1_options and are passed
854 only when preprocessing only to avoid duplication. We pass the cc1 spec
855 options to the preprocessor so that it the cc1 spec may manipulate
856 options used to set target flags. Those special target flags settings may
857 in turn cause preprocessor symbols to be defined specially. */
858 static const char *cpp_options =
859 "%(cpp_unique_options) %1 %{m*} %{std*&ansi&trigraphs} %{W*&pedantic*} %{w}\
860 %{f*} %{g*:%{!g0:%{g*} %{!fno-working-directory:-fworking-directory}}} %{O*}\
861 %{undef} %{save-temps*:-fpch-preprocess}";
863 /* This contains cpp options which are not passed when the preprocessor
864 output will be used by another program. */
865 static const char *cpp_debug_options = "%{d*}";
867 /* NB: This is shared amongst all front-ends, except for Ada. */
868 static const char *cc1_options =
869 "%{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\
870 %1 %{!Q:-quiet} -dumpbase %B %{d*} %{m*} %{a*}\
871 %{fcompare-debug-second:%:compare-debug-auxbase-opt(%b)} \
872 %{!fcompare-debug-second:%{c|S:%{o*:-auxbase-strip %*}%{!o*:-auxbase %b}}}%{!c:%{!S:-auxbase %b}} \
873 %{g*} %{O*} %{W*&pedantic*} %{w} %{std*&ansi&trigraphs}\
874 %{v:-version} %{pg:-p} %{p} %{f*} %{undef}\
875 %{Qn:-fno-ident} %{--help:--help}\
876 %{--target-help:--target-help}\
877 %{--help=*:--help=%(VALUE)}\
878 %{!fsyntax-only:%{S:%W{o*}%{!o*:-o %b.s}}}\
879 %{fsyntax-only:-o %j} %{-param*}\
880 %{fmudflap|fmudflapth:-fno-builtin -fno-merge-constants}\
881 %{coverage:-fprofile-arcs -ftest-coverage}";
883 static const char *asm_options =
884 "%{--target-help:%:print-asm-header()} "
886 /* If GNU AS is used, then convert -w (no warnings), -I, and -v
887 to the assembler equivalents. */
888 "%{v} %{w:-W} %{I*} "
890 "%a %Y %{c:%W{o*}%{!o*:-o %w%b%O}}%{!c:-o %d%w%u%O}";
892 static const char *invoke_as =
893 #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT
894 "%{fcompare-debug=*|fdump-final-insns=*:%:compare-debug-dump-opt()}\
895 %{!S:-o %|.s |\n as %(asm_options) %|.s %A }";
897 "%{fcompare-debug=*|fdump-final-insns=*:%:compare-debug-dump-opt()}\
898 %{!S:-o %|.s |\n as %(asm_options) %m.s %A }";
901 /* Some compilers have limits on line lengths, and the multilib_select
902 and/or multilib_matches strings can be very long, so we build them at
904 static struct obstack multilib_obstack;
905 static const char *multilib_select;
906 static const char *multilib_matches;
907 static const char *multilib_defaults;
908 static const char *multilib_exclusions;
910 /* Check whether a particular argument is a default argument. */
912 #ifndef MULTILIB_DEFAULTS
913 #define MULTILIB_DEFAULTS { "" }
916 static const char *const multilib_defaults_raw[] = MULTILIB_DEFAULTS;
918 #ifndef DRIVER_SELF_SPECS
919 #define DRIVER_SELF_SPECS ""
922 /* Adding -fopenmp should imply pthreads. This is particularly important
923 for targets that use different start files and suchlike. */
924 #ifndef GOMP_SELF_SPECS
925 #define GOMP_SELF_SPECS "%{fopenmp|ftree-parallelize-loops=*: -pthread}"
928 static const char *const driver_self_specs[] = {
929 "%{fdump-final-insns:-fdump-final-insns=.} %<fdump-final-insns",
930 DRIVER_SELF_SPECS, GOMP_SELF_SPECS
933 #ifndef OPTION_DEFAULT_SPECS
934 #define OPTION_DEFAULT_SPECS { "", "" }
943 static const struct default_spec
944 option_default_specs[] = { OPTION_DEFAULT_SPECS };
948 struct user_specs *next;
949 const char *filename;
952 static struct user_specs *user_specs_head, *user_specs_tail;
954 #ifndef SWITCH_TAKES_ARG
955 #define SWITCH_TAKES_ARG(CHAR) DEFAULT_SWITCH_TAKES_ARG(CHAR)
958 #ifndef WORD_SWITCH_TAKES_ARG
959 #define WORD_SWITCH_TAKES_ARG(STR) DEFAULT_WORD_SWITCH_TAKES_ARG (STR)
962 #ifdef HAVE_TARGET_EXECUTABLE_SUFFIX
963 /* This defines which switches stop a full compilation. */
964 #define DEFAULT_SWITCH_CURTAILS_COMPILATION(CHAR) \
965 ((CHAR) == 'c' || (CHAR) == 'S')
967 #ifndef SWITCH_CURTAILS_COMPILATION
968 #define SWITCH_CURTAILS_COMPILATION(CHAR) \
969 DEFAULT_SWITCH_CURTAILS_COMPILATION(CHAR)
973 /* Record the mapping from file suffixes for compilation specs. */
977 const char *suffix; /* Use this compiler for input files
978 whose names end in this suffix. */
980 const char *spec; /* To use this compiler, run this spec. */
982 const char *cpp_spec; /* If non-NULL, substitute this spec
983 for `%C', rather than the usual
985 const int combinable; /* If nonzero, compiler can deal with
986 multiple source files at once (IMA). */
987 const int needs_preprocessing; /* If nonzero, source files need to
988 be run through a preprocessor. */
991 /* Pointer to a vector of `struct compiler' that gives the spec for
992 compiling a file, based on its suffix.
993 A file that does not end in any of these suffixes will be passed
994 unchanged to the loader and nothing else will be done to it.
996 An entry containing two 0s is used to terminate the vector.
998 If multiple entries match a file, the last matching one is used. */
1000 static struct compiler *compilers;
1002 /* Number of entries in `compilers', not counting the null terminator. */
1004 static int n_compilers;
1006 /* The default list of file name suffixes and their compilation specs. */
1008 static const struct compiler default_compilers[] =
1010 /* Add lists of suffixes of known languages here. If those languages
1011 were not present when we built the driver, we will hit these copies
1012 and be given a more meaningful error than "file not used since
1013 linking is not done". */
1014 {".m", "#Objective-C", 0, 0, 0}, {".mi", "#Objective-C", 0, 0, 0},
1015 {".mm", "#Objective-C++", 0, 0, 0}, {".M", "#Objective-C++", 0, 0, 0},
1016 {".mii", "#Objective-C++", 0, 0, 0},
1017 {".cc", "#C++", 0, 0, 0}, {".cxx", "#C++", 0, 0, 0},
1018 {".cpp", "#C++", 0, 0, 0}, {".cp", "#C++", 0, 0, 0},
1019 {".c++", "#C++", 0, 0, 0}, {".C", "#C++", 0, 0, 0},
1020 {".CPP", "#C++", 0, 0, 0}, {".ii", "#C++", 0, 0, 0},
1021 {".ads", "#Ada", 0, 0, 0}, {".adb", "#Ada", 0, 0, 0},
1022 {".f", "#Fortran", 0, 0, 0}, {".F", "#Fortran", 0, 0, 0},
1023 {".for", "#Fortran", 0, 0, 0}, {".FOR", "#Fortran", 0, 0, 0},
1024 {".ftn", "#Fortran", 0, 0, 0}, {".FTN", "#Fortran", 0, 0, 0},
1025 {".fpp", "#Fortran", 0, 0, 0}, {".FPP", "#Fortran", 0, 0, 0},
1026 {".f90", "#Fortran", 0, 0, 0}, {".F90", "#Fortran", 0, 0, 0},
1027 {".f95", "#Fortran", 0, 0, 0}, {".F95", "#Fortran", 0, 0, 0},
1028 {".f03", "#Fortran", 0, 0, 0}, {".F03", "#Fortran", 0, 0, 0},
1029 {".f08", "#Fortran", 0, 0, 0}, {".F08", "#Fortran", 0, 0, 0},
1030 {".r", "#Ratfor", 0, 0, 0},
1031 {".p", "#Pascal", 0, 0, 0}, {".pas", "#Pascal", 0, 0, 0},
1032 {".java", "#Java", 0, 0, 0}, {".class", "#Java", 0, 0, 0},
1033 {".zip", "#Java", 0, 0, 0}, {".jar", "#Java", 0, 0, 0},
1034 /* Next come the entries for C. */
1035 {".c", "@c", 0, 1, 1},
1037 /* cc1 has an integrated ISO C preprocessor. We should invoke the
1038 external preprocessor if -save-temps is given. */
1039 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\
1041 %{traditional|ftraditional:\
1042 %eGNU C no longer supports -traditional without -E}\
1044 %{save-temps*|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
1045 %(cpp_options) -o %{save-temps*:%b.i} %{!save-temps*:%g.i} \n\
1046 cc1 -fpreprocessed %{save-temps*:%b.i} %{!save-temps*:%g.i} \
1048 %{!save-temps*:%{!traditional-cpp:%{!no-integrated-cpp:\
1049 cc1 %(cpp_unique_options) %(cc1_options)}}}\
1050 %{!fsyntax-only:%(invoke_as)}} \
1052 %{save-temps*|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
1053 %(cpp_options) -o %{save-temps*:%b.i} %{!save-temps*:%g.i}}\
1054 %{!save-temps*:%{!traditional-cpp:%{!no-integrated-cpp:\
1055 cc1 %(cpp_unique_options) %(cc1_options)}}\
1056 %{!fsyntax-only:%(invoke_as)}}}}}}", 0, 1, 1},
1058 "%{!E:%e-E or -x required when input is from standard input}\
1059 %(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)", 0, 0, 0},
1060 {".h", "@c-header", 0, 0, 0},
1062 /* cc1 has an integrated ISO C preprocessor. We should invoke the
1063 external preprocessor if -save-temps is given. */
1064 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\
1066 %{save-temps*|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
1067 %(cpp_options) -o %{save-temps*:%b.i} %{!save-temps*:%g.i} \n\
1068 cc1 -fpreprocessed %{save-temps*:%b.i} %{!save-temps*:%g.i} \
1070 -o %g.s %{!o*:--output-pch=%i.gch}\
1071 %W{o*:--output-pch=%*}%V}\
1072 %{!save-temps*:%{!traditional-cpp:%{!no-integrated-cpp:\
1073 cc1 %(cpp_unique_options) %(cc1_options)\
1074 -o %g.s %{!o*:--output-pch=%i.gch}\
1075 %W{o*:--output-pch=%*}%V}}}}}}", 0, 0, 0},
1076 {".i", "@cpp-output", 0, 1, 0},
1078 "%{!M:%{!MM:%{!E:cc1 -fpreprocessed %i %(cc1_options) %{!fsyntax-only:%(invoke_as)}}}}", 0, 1, 0},
1079 {".s", "@assembler", 0, 1, 0},
1081 "%{!M:%{!MM:%{!E:%{!S:as %(asm_debug) %(asm_options) %i %A }}}}", 0, 1, 0},
1082 {".sx", "@assembler-with-cpp", 0, 1, 0},
1083 {".S", "@assembler-with-cpp", 0, 1, 0},
1084 {"@assembler-with-cpp",
1085 #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT
1086 "%(trad_capable_cpp) -lang-asm %(cpp_options) -fno-directives-only\
1087 %{E|M|MM:%(cpp_debug_options)}\
1088 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\
1089 as %(asm_debug) %(asm_options) %|.s %A }}}}"
1091 "%(trad_capable_cpp) -lang-asm %(cpp_options) -fno-directives-only\
1092 %{E|M|MM:%(cpp_debug_options)}\
1093 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\
1094 as %(asm_debug) %(asm_options) %m.s %A }}}}"
1099 /* Mark end of table. */
1103 /* Number of elements in default_compilers, not counting the terminator. */
1105 static const int n_default_compilers = ARRAY_SIZE (default_compilers) - 1;
1107 /* A vector of options to give to the linker.
1108 These options are accumulated by %x,
1109 and substituted into the linker command with %X. */
1110 static int n_linker_options;
1111 static char **linker_options;
1113 /* A vector of options to give to the assembler.
1114 These options are accumulated by -Wa,
1115 and substituted into the assembler command with %Y. */
1116 static int n_assembler_options;
1117 static char **assembler_options;
1119 /* A vector of options to give to the preprocessor.
1120 These options are accumulated by -Wp,
1121 and substituted into the preprocessor command with %Z. */
1122 static int n_preprocessor_options;
1123 static char **preprocessor_options;
1125 /* Define how to map long options into short ones. */
1127 /* This structure describes one mapping. */
1130 /* The long option's name. */
1131 const char *const name;
1132 /* The equivalent short option. */
1133 const char *const equivalent;
1134 /* Argument info. A string of flag chars; NULL equals no options.
1135 a => argument required.
1136 o => argument optional.
1137 j => join argument to equivalent, making one word.
1138 * => require other text after NAME as an argument. */
1139 const char *const arg_info;
1142 /* This is the table of mappings. Mappings are tried sequentially
1143 for each option encountered; the first one that matches, wins. */
1145 static const struct option_map option_map[] =
1147 {"--all-warnings", "-Wall", 0},
1148 {"--ansi", "-ansi", 0},
1149 {"--assemble", "-S", 0},
1150 {"--assert", "-A", "a"},
1151 {"--classpath", "-fclasspath=", "aj"},
1152 {"--bootclasspath", "-fbootclasspath=", "aj"},
1153 {"--CLASSPATH", "-fclasspath=", "aj"},
1154 {"--combine", "-combine", 0},
1155 {"--comments", "-C", 0},
1156 {"--comments-in-macros", "-CC", 0},
1157 {"--compile", "-c", 0},
1158 {"--debug", "-g", "oj"},
1159 {"--define-macro", "-D", "aj"},
1160 {"--dependencies", "-M", 0},
1161 {"--dump", "-d", "a"},
1162 {"--dumpbase", "-dumpbase", "a"},
1163 {"--encoding", "-fencoding=", "aj"},
1164 {"--entry", "-e", 0},
1165 {"--extra-warnings", "-W", 0},
1166 {"--extdirs", "-fextdirs=", "aj"},
1167 {"--for-assembler", "-Wa", "a"},
1168 {"--for-linker", "-Xlinker", "a"},
1169 {"--force-link", "-u", "a"},
1170 {"--coverage", "-coverage", 0},
1171 {"--imacros", "-imacros", "a"},
1172 {"--include", "-include", "a"},
1173 {"--include-barrier", "-I-", 0},
1174 {"--include-directory", "-I", "aj"},
1175 {"--include-directory-after", "-idirafter", "a"},
1176 {"--include-prefix", "-iprefix", "a"},
1177 {"--include-with-prefix", "-iwithprefix", "a"},
1178 {"--include-with-prefix-before", "-iwithprefixbefore", "a"},
1179 {"--include-with-prefix-after", "-iwithprefix", "a"},
1180 {"--language", "-x", "a"},
1181 {"--library-directory", "-L", "a"},
1182 {"--machine", "-m", "aj"},
1183 {"--machine-", "-m", "*j"},
1184 {"--no-canonical-prefixes", "-no-canonical-prefixes", 0},
1185 {"--no-integrated-cpp", "-no-integrated-cpp", 0},
1186 {"--no-line-commands", "-P", 0},
1187 {"--no-precompiled-includes", "-noprecomp", 0},
1188 {"--no-standard-includes", "-nostdinc", 0},
1189 {"--no-standard-libraries", "-nostdlib", 0},
1190 {"--no-warnings", "-w", 0},
1191 {"--optimize", "-O", "oj"},
1192 {"--output", "-o", "a"},
1193 {"--output-class-directory", "-foutput-class-dir=", "ja"},
1194 {"--param", "--param", "a"},
1195 {"--pass-exit-codes", "-pass-exit-codes", 0},
1196 {"--pedantic", "-pedantic", 0},
1197 {"--pedantic-errors", "-pedantic-errors", 0},
1198 {"--pie", "-pie", 0},
1199 {"--pipe", "-pipe", 0},
1200 {"--prefix", "-B", "a"},
1201 {"--preprocess", "-E", 0},
1202 {"--print-search-dirs", "-print-search-dirs", 0},
1203 {"--print-file-name", "-print-file-name=", "aj"},
1204 {"--print-libgcc-file-name", "-print-libgcc-file-name", 0},
1205 {"--print-missing-file-dependencies", "-MG", 0},
1206 {"--print-multi-lib", "-print-multi-lib", 0},
1207 {"--print-multi-directory", "-print-multi-directory", 0},
1208 {"--print-multi-os-directory", "-print-multi-os-directory", 0},
1209 {"--print-prog-name", "-print-prog-name=", "aj"},
1210 {"--print-sysroot", "-print-sysroot", 0},
1211 {"--print-sysroot-headers-suffix", "-print-sysroot-headers-suffix", 0},
1212 {"--profile", "-p", 0},
1213 {"--profile-blocks", "-a", 0},
1214 {"--quiet", "-q", 0},
1215 {"--resource", "-fcompile-resource=", "aj"},
1216 {"--save-temps", "-save-temps", 0},
1217 {"--shared", "-shared", 0},
1218 {"--silent", "-q", 0},
1219 {"--specs", "-specs=", "aj"},
1220 {"--static", "-static", 0},
1221 {"--std", "-std=", "aj"},
1222 {"--symbolic", "-symbolic", 0},
1223 {"--sysroot", "--sysroot=", "aj"},
1224 {"--time", "-time", 0},
1225 {"--trace-includes", "-H", 0},
1226 {"--traditional", "-traditional", 0},
1227 {"--traditional-cpp", "-traditional-cpp", 0},
1228 {"--trigraphs", "-trigraphs", 0},
1229 {"--undefine-macro", "-U", "aj"},
1230 {"--user-dependencies", "-MM", 0},
1231 {"--verbose", "-v", 0},
1232 {"--warn-", "-W", "*j"},
1233 {"--write-dependencies", "-MD", 0},
1234 {"--write-user-dependencies", "-MMD", 0},
1239 #ifdef TARGET_OPTION_TRANSLATE_TABLE
1240 static const struct {
1241 const char *const option_found;
1242 const char *const replacements;
1243 } target_option_translations[] =
1245 TARGET_OPTION_TRANSLATE_TABLE,
1250 /* Translate the options described by *ARGCP and *ARGVP.
1251 Make a new vector and store it back in *ARGVP,
1252 and store its length in *ARGCP. */
1255 translate_options (int *argcp, const char *const **argvp)
1259 const char *const *argv = *argvp;
1260 int newvsize = (argc + 2) * 2 * sizeof (const char *);
1261 const char **newv = XNEWVAR (const char *, newvsize);
1265 newv[newindex++] = argv[i++];
1269 #ifdef TARGET_OPTION_TRANSLATE_TABLE
1273 target_option_translations[tott_idx].option_found;
1276 if (strcmp (target_option_translations[tott_idx].option_found,
1283 for (sp = target_option_translations[tott_idx].replacements;
1290 newvsize += spaces * sizeof (const char *);
1291 newv = XRESIZEVAR (const char *, newv, newvsize);
1293 sp = target_option_translations[tott_idx].replacements;
1302 newv[newindex++] = np;
1303 while (*np != ' ' && *np)
1314 if (target_option_translations[tott_idx].option_found)
1318 /* Translate -- options. */
1319 if (argv[i][0] == '-' && argv[i][1] == '-')
1322 /* Find a mapping that applies to this option. */
1323 for (j = 0; j < ARRAY_SIZE (option_map); j++)
1325 size_t optlen = strlen (option_map[j].name);
1326 size_t arglen = strlen (argv[i]);
1327 size_t complen = arglen > optlen ? optlen : arglen;
1328 const char *arginfo = option_map[j].arg_info;
1333 if (!strncmp (argv[i], option_map[j].name, complen))
1335 const char *arg = 0;
1337 if (arglen < optlen)
1340 for (k = j + 1; k < ARRAY_SIZE (option_map); k++)
1341 if (strlen (option_map[k].name) >= arglen
1342 && !strncmp (argv[i], option_map[k].name, arglen))
1344 error ("ambiguous abbreviation %s", argv[i]);
1348 if (k != ARRAY_SIZE (option_map))
1352 if (arglen > optlen)
1354 /* If the option has an argument, accept that. */
1355 if (argv[i][optlen] == '=')
1356 arg = argv[i] + optlen + 1;
1358 /* If this mapping requires extra text at end of name,
1359 accept that as "argument". */
1360 else if (strchr (arginfo, '*') != 0)
1361 arg = argv[i] + optlen;
1363 /* Otherwise, extra text at end means mismatch.
1364 Try other mappings. */
1369 else if (strchr (arginfo, '*') != 0)
1371 error ("incomplete '%s' option", option_map[j].name);
1375 /* Handle arguments. */
1376 if (strchr (arginfo, 'a') != 0)
1382 error ("missing argument to '%s' option",
1383 option_map[j].name);
1390 else if (strchr (arginfo, '*') != 0)
1392 else if (strchr (arginfo, 'o') == 0)
1395 error ("extraneous argument to '%s' option",
1396 option_map[j].name);
1400 /* Store the translation as one argv elt or as two. */
1401 if (arg != 0 && strchr (arginfo, 'j') != 0)
1402 newv[newindex++] = concat (option_map[j].equivalent, arg,
1406 newv[newindex++] = option_map[j].equivalent;
1407 newv[newindex++] = arg;
1410 newv[newindex++] = option_map[j].equivalent;
1418 /* Handle old-fashioned options--just copy them through,
1419 with their arguments. */
1420 else if (argv[i][0] == '-')
1422 const char *p = argv[i] + 1;
1426 if (SWITCH_TAKES_ARG (c) > (p[1] != 0))
1427 nskip += SWITCH_TAKES_ARG (c) - (p[1] != 0);
1428 else if (WORD_SWITCH_TAKES_ARG (p))
1429 nskip += WORD_SWITCH_TAKES_ARG (p);
1430 else if ((c == 'B' || c == 'b' || c == 'x')
1433 else if (! strcmp (p, "Xlinker"))
1435 else if (! strcmp (p, "Xpreprocessor"))
1437 else if (! strcmp (p, "Xassembler"))
1440 /* Watch out for an option at the end of the command line that
1441 is missing arguments, and avoid skipping past the end of the
1443 if (nskip + i > argc)
1448 newv[newindex++] = argv[i++];
1453 /* Ordinary operands, or +e options. */
1454 newv[newindex++] = argv[i++];
1464 skip_whitespace (char *p)
1468 /* A fully-blank line is a delimiter in the SPEC file and shouldn't
1469 be considered whitespace. */
1470 if (p[0] == '\n' && p[1] == '\n' && p[2] == '\n')
1472 else if (*p == '\n' || *p == ' ' || *p == '\t')
1486 /* Structures to keep track of prefixes to try when looking for files. */
1490 const char *prefix; /* String to prepend to the path. */
1491 struct prefix_list *next; /* Next in linked list. */
1492 int require_machine_suffix; /* Don't use without machine_suffix. */
1493 /* 2 means try both machine_suffix and just_machine_suffix. */
1494 int priority; /* Sort key - priority within list. */
1495 int os_multilib; /* 1 if OS multilib scheme should be used,
1496 0 for GCC multilib scheme. */
1501 struct prefix_list *plist; /* List of prefixes to try */
1502 int max_len; /* Max length of a prefix in PLIST */
1503 const char *name; /* Name of this list (used in config stuff) */
1506 /* List of prefixes to try when looking for executables. */
1508 static struct path_prefix exec_prefixes = { 0, 0, "exec" };
1510 /* List of prefixes to try when looking for startup (crt0) files. */
1512 static struct path_prefix startfile_prefixes = { 0, 0, "startfile" };
1514 /* List of prefixes to try when looking for include files. */
1516 static struct path_prefix include_prefixes = { 0, 0, "include" };
1518 /* Suffix to attach to directories searched for commands.
1519 This looks like `MACHINE/VERSION/'. */
1521 static const char *machine_suffix = 0;
1523 /* Suffix to attach to directories searched for commands.
1524 This is just `MACHINE/'. */
1526 static const char *just_machine_suffix = 0;
1528 /* Adjusted value of GCC_EXEC_PREFIX envvar. */
1530 static const char *gcc_exec_prefix;
1532 /* Adjusted value of standard_libexec_prefix. */
1534 static const char *gcc_libexec_prefix;
1536 /* Default prefixes to attach to command names. */
1538 #ifndef STANDARD_STARTFILE_PREFIX_1
1539 #define STANDARD_STARTFILE_PREFIX_1 "/lib/"
1541 #ifndef STANDARD_STARTFILE_PREFIX_2
1542 #define STANDARD_STARTFILE_PREFIX_2 "/usr/lib/"
1545 #ifdef CROSS_DIRECTORY_STRUCTURE /* Don't use these prefixes for a cross compiler. */
1546 #undef MD_EXEC_PREFIX
1547 #undef MD_STARTFILE_PREFIX
1548 #undef MD_STARTFILE_PREFIX_1
1551 /* If no prefixes defined, use the null string, which will disable them. */
1552 #ifndef MD_EXEC_PREFIX
1553 #define MD_EXEC_PREFIX ""
1555 #ifndef MD_STARTFILE_PREFIX
1556 #define MD_STARTFILE_PREFIX ""
1558 #ifndef MD_STARTFILE_PREFIX_1
1559 #define MD_STARTFILE_PREFIX_1 ""
1562 /* These directories are locations set at configure-time based on the
1563 --prefix option provided to configure. Their initializers are
1564 defined in Makefile.in. These paths are not *directly* used when
1565 gcc_exec_prefix is set because, in that case, we know where the
1566 compiler has been installed, and use paths relative to that
1567 location instead. */
1568 static const char *const standard_exec_prefix = STANDARD_EXEC_PREFIX;
1569 static const char *const standard_libexec_prefix = STANDARD_LIBEXEC_PREFIX;
1570 static const char *const standard_bindir_prefix = STANDARD_BINDIR_PREFIX;
1571 static const char *const standard_startfile_prefix = STANDARD_STARTFILE_PREFIX;
1573 /* For native compilers, these are well-known paths containing
1574 components that may be provided by the system. For cross
1575 compilers, these paths are not used. */
1576 static const char *md_exec_prefix = MD_EXEC_PREFIX;
1577 static const char *md_startfile_prefix = MD_STARTFILE_PREFIX;
1578 static const char *md_startfile_prefix_1 = MD_STARTFILE_PREFIX_1;
1579 static const char *const standard_startfile_prefix_1
1580 = STANDARD_STARTFILE_PREFIX_1;
1581 static const char *const standard_startfile_prefix_2
1582 = STANDARD_STARTFILE_PREFIX_2;
1584 /* A relative path to be used in finding the location of tools
1585 relative to the driver. */
1586 static const char *const tooldir_base_prefix = TOOLDIR_BASE_PREFIX;
1588 /* Subdirectory to use for locating libraries. Set by
1589 set_multilib_dir based on the compilation options. */
1591 static const char *multilib_dir;
1593 /* Subdirectory to use for locating libraries in OS conventions. Set by
1594 set_multilib_dir based on the compilation options. */
1596 static const char *multilib_os_dir;
1598 /* Structure to keep track of the specs that have been defined so far.
1599 These are accessed using %(specname) or %[specname] in a compiler
1604 /* The following 2 fields must be first */
1605 /* to allow EXTRA_SPECS to be initialized */
1606 const char *name; /* name of the spec. */
1607 const char *ptr; /* available ptr if no static pointer */
1609 /* The following fields are not initialized */
1610 /* by EXTRA_SPECS */
1611 const char **ptr_spec; /* pointer to the spec itself. */
1612 struct spec_list *next; /* Next spec in linked list. */
1613 int name_len; /* length of the name */
1614 int alloc_p; /* whether string was allocated */
1617 #define INIT_STATIC_SPEC(NAME,PTR) \
1618 { NAME, NULL, PTR, (struct spec_list *) 0, sizeof (NAME) - 1, 0 }
1620 /* List of statically defined specs. */
1621 static struct spec_list static_specs[] =
1623 INIT_STATIC_SPEC ("asm", &asm_spec),
1624 INIT_STATIC_SPEC ("asm_debug", &asm_debug),
1625 INIT_STATIC_SPEC ("asm_final", &asm_final_spec),
1626 INIT_STATIC_SPEC ("asm_options", &asm_options),
1627 INIT_STATIC_SPEC ("invoke_as", &invoke_as),
1628 INIT_STATIC_SPEC ("cpp", &cpp_spec),
1629 INIT_STATIC_SPEC ("cpp_options", &cpp_options),
1630 INIT_STATIC_SPEC ("cpp_debug_options", &cpp_debug_options),
1631 INIT_STATIC_SPEC ("cpp_unique_options", &cpp_unique_options),
1632 INIT_STATIC_SPEC ("trad_capable_cpp", &trad_capable_cpp),
1633 INIT_STATIC_SPEC ("cc1", &cc1_spec),
1634 INIT_STATIC_SPEC ("cc1_options", &cc1_options),
1635 INIT_STATIC_SPEC ("cc1plus", &cc1plus_spec),
1636 INIT_STATIC_SPEC ("link_gcc_c_sequence", &link_gcc_c_sequence_spec),
1637 INIT_STATIC_SPEC ("link_ssp", &link_ssp_spec),
1638 INIT_STATIC_SPEC ("endfile", &endfile_spec),
1639 INIT_STATIC_SPEC ("link", &link_spec),
1640 INIT_STATIC_SPEC ("lib", &lib_spec),
1641 INIT_STATIC_SPEC ("mfwrap", &mfwrap_spec),
1642 INIT_STATIC_SPEC ("mflib", &mflib_spec),
1643 INIT_STATIC_SPEC ("link_gomp", &link_gomp_spec),
1644 INIT_STATIC_SPEC ("libgcc", &libgcc_spec),
1645 INIT_STATIC_SPEC ("startfile", &startfile_spec),
1646 INIT_STATIC_SPEC ("switches_need_spaces", &switches_need_spaces),
1647 INIT_STATIC_SPEC ("cross_compile", &cross_compile),
1648 INIT_STATIC_SPEC ("version", &compiler_version),
1649 INIT_STATIC_SPEC ("multilib", &multilib_select),
1650 INIT_STATIC_SPEC ("multilib_defaults", &multilib_defaults),
1651 INIT_STATIC_SPEC ("multilib_extra", &multilib_extra),
1652 INIT_STATIC_SPEC ("multilib_matches", &multilib_matches),
1653 INIT_STATIC_SPEC ("multilib_exclusions", &multilib_exclusions),
1654 INIT_STATIC_SPEC ("multilib_options", &multilib_options),
1655 INIT_STATIC_SPEC ("linker", &linker_name_spec),
1656 INIT_STATIC_SPEC ("link_libgcc", &link_libgcc_spec),
1657 INIT_STATIC_SPEC ("md_exec_prefix", &md_exec_prefix),
1658 INIT_STATIC_SPEC ("md_startfile_prefix", &md_startfile_prefix),
1659 INIT_STATIC_SPEC ("md_startfile_prefix_1", &md_startfile_prefix_1),
1660 INIT_STATIC_SPEC ("startfile_prefix_spec", &startfile_prefix_spec),
1661 INIT_STATIC_SPEC ("sysroot_spec", &sysroot_spec),
1662 INIT_STATIC_SPEC ("sysroot_suffix_spec", &sysroot_suffix_spec),
1663 INIT_STATIC_SPEC ("sysroot_hdrs_suffix_spec", &sysroot_hdrs_suffix_spec),
1666 #ifdef EXTRA_SPECS /* additional specs needed */
1667 /* Structure to keep track of just the first two args of a spec_list.
1668 That is all that the EXTRA_SPECS macro gives us. */
1671 const char *const name;
1672 const char *const ptr;
1675 static const struct spec_list_1 extra_specs_1[] = { EXTRA_SPECS };
1676 static struct spec_list *extra_specs = (struct spec_list *) 0;
1679 /* List of dynamically allocates specs that have been defined so far. */
1681 static struct spec_list *specs = (struct spec_list *) 0;
1683 /* List of static spec functions. */
1685 static const struct spec_function static_spec_functions[] =
1687 { "getenv", getenv_spec_function },
1688 { "if-exists", if_exists_spec_function },
1689 { "if-exists-else", if_exists_else_spec_function },
1690 { "replace-outfile", replace_outfile_spec_function },
1691 { "version-compare", version_compare_spec_function },
1692 { "include", include_spec_function },
1693 { "print-asm-header", print_asm_header_spec_function },
1694 { "compare-debug-dump-opt", compare_debug_dump_opt_spec_function },
1695 { "compare-debug-self-opt", compare_debug_self_opt_spec_function },
1696 { "compare-debug-auxbase-opt", compare_debug_auxbase_opt_spec_function },
1697 #ifdef EXTRA_SPEC_FUNCTIONS
1698 EXTRA_SPEC_FUNCTIONS
1703 static int processing_spec_function;
1705 /* Add appropriate libgcc specs to OBSTACK, taking into account
1706 various permutations of -shared-libgcc, -shared, and such. */
1708 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
1710 #ifndef USE_LD_AS_NEEDED
1711 #define USE_LD_AS_NEEDED 0
1715 init_gcc_specs (struct obstack *obstack, const char *shared_name,
1716 const char *static_name, const char *eh_name)
1720 buf = concat ("%{static|static-libgcc:", static_name, " ", eh_name, "}"
1721 "%{!static:%{!static-libgcc:"
1722 #if USE_LD_AS_NEEDED
1723 "%{!shared-libgcc:",
1724 static_name, " --as-needed ", shared_name, " --no-as-needed"
1727 shared_name, "%{!shared: ", static_name, "}"
1731 "%{!shared-libgcc:", static_name, " ", eh_name, "}"
1732 "%{shared-libgcc:", shared_name, " ", static_name, "}"
1736 "%{shared-libgcc:", shared_name, "}"
1737 "%{!shared-libgcc:", static_name, "}"
1740 "%{shared:", shared_name, "}"
1745 obstack_grow (obstack, buf, strlen (buf));
1748 #endif /* ENABLE_SHARED_LIBGCC */
1750 /* Initialize the specs lookup routines. */
1755 struct spec_list *next = (struct spec_list *) 0;
1756 struct spec_list *sl = (struct spec_list *) 0;
1760 return; /* Already initialized. */
1763 notice ("Using built-in specs.\n");
1766 extra_specs = XCNEWVEC (struct spec_list, ARRAY_SIZE (extra_specs_1));
1768 for (i = ARRAY_SIZE (extra_specs_1) - 1; i >= 0; i--)
1770 sl = &extra_specs[i];
1771 sl->name = extra_specs_1[i].name;
1772 sl->ptr = extra_specs_1[i].ptr;
1774 sl->name_len = strlen (sl->name);
1775 sl->ptr_spec = &sl->ptr;
1780 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--)
1782 sl = &static_specs[i];
1787 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
1788 /* ??? If neither -shared-libgcc nor --static-libgcc was
1789 seen, then we should be making an educated guess. Some proposed
1790 heuristics for ELF include:
1792 (1) If "-Wl,--export-dynamic", then it's a fair bet that the
1793 program will be doing dynamic loading, which will likely
1794 need the shared libgcc.
1796 (2) If "-ldl", then it's also a fair bet that we're doing
1799 (3) For each ET_DYN we're linking against (either through -lfoo
1800 or /some/path/foo.so), check to see whether it or one of
1801 its dependencies depends on a shared libgcc.
1805 If the runtime is fixed to look for program headers instead
1806 of calling __register_frame_info at all, for each object,
1807 use the shared libgcc if any EH symbol referenced.
1809 If crtstuff is fixed to not invoke __register_frame_info
1810 automatically, for each object, use the shared libgcc if
1811 any non-empty unwind section found.
1813 Doing any of this probably requires invoking an external program to
1814 do the actual object file scanning. */
1816 const char *p = libgcc_spec;
1819 /* Transform the extant libgcc_spec into one that uses the shared libgcc
1820 when given the proper command line arguments. */
1823 if (in_sep && *p == '-' && strncmp (p, "-lgcc", 5) == 0)
1825 init_gcc_specs (&obstack,
1827 #ifdef USE_LIBUNWIND_EXCEPTIONS
1833 #ifdef USE_LIBUNWIND_EXCEPTIONS
1834 # ifdef HAVE_LD_STATIC_DYNAMIC
1835 " %{!static:-Bstatic} -lunwind %{!static:-Bdynamic}"
1845 else if (in_sep && *p == 'l' && strncmp (p, "libgcc.a%s", 10) == 0)
1847 /* Ug. We don't know shared library extensions. Hope that
1848 systems that use this form don't do shared libraries. */
1849 init_gcc_specs (&obstack,
1853 #ifdef USE_LIBUNWIND_EXCEPTIONS
1862 obstack_1grow (&obstack, *p);
1863 in_sep = (*p == ' ');
1868 obstack_1grow (&obstack, '\0');
1869 libgcc_spec = XOBFINISH (&obstack, const char *);
1872 #ifdef USE_AS_TRADITIONAL_FORMAT
1873 /* Prepend "--traditional-format" to whatever asm_spec we had before. */
1875 static const char tf[] = "--traditional-format ";
1876 obstack_grow (&obstack, tf, sizeof(tf) - 1);
1877 obstack_grow0 (&obstack, asm_spec, strlen (asm_spec));
1878 asm_spec = XOBFINISH (&obstack, const char *);
1882 #if defined LINK_EH_SPEC || defined LINK_BUILDID_SPEC
1883 # ifdef LINK_BUILDID_SPEC
1884 /* Prepend LINK_BUILDID_SPEC to whatever link_spec we had before. */
1885 obstack_grow (&obstack, LINK_BUILDID_SPEC, sizeof(LINK_BUILDID_SPEC) - 1);
1887 # ifdef LINK_EH_SPEC
1888 /* Prepend LINK_EH_SPEC to whatever link_spec we had before. */
1889 obstack_grow (&obstack, LINK_EH_SPEC, sizeof(LINK_EH_SPEC) - 1);
1891 obstack_grow0 (&obstack, link_spec, strlen (link_spec));
1892 link_spec = XOBFINISH (&obstack, const char *);
1898 /* Change the value of spec NAME to SPEC. If SPEC is empty, then the spec is
1899 removed; If the spec starts with a + then SPEC is added to the end of the
1903 set_spec (const char *name, const char *spec)
1905 struct spec_list *sl;
1906 const char *old_spec;
1907 int name_len = strlen (name);
1910 /* If this is the first call, initialize the statically allocated specs. */
1913 struct spec_list *next = (struct spec_list *) 0;
1914 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--)
1916 sl = &static_specs[i];
1923 /* See if the spec already exists. */
1924 for (sl = specs; sl; sl = sl->next)
1925 if (name_len == sl->name_len && !strcmp (sl->name, name))
1930 /* Not found - make it. */
1931 sl = XNEW (struct spec_list);
1932 sl->name = xstrdup (name);
1933 sl->name_len = name_len;
1934 sl->ptr_spec = &sl->ptr;
1936 *(sl->ptr_spec) = "";
1941 old_spec = *(sl->ptr_spec);
1942 *(sl->ptr_spec) = ((spec[0] == '+' && ISSPACE ((unsigned char)spec[1]))
1943 ? concat (old_spec, spec + 1, NULL)
1948 notice ("Setting spec %s to '%s'\n\n", name, *(sl->ptr_spec));
1951 /* Free the old spec. */
1952 if (old_spec && sl->alloc_p)
1953 free (CONST_CAST(char *, old_spec));
1958 /* Accumulate a command (program name and args), and run it. */
1960 /* Vector of pointers to arguments in the current line of specifications. */
1962 static const char **argbuf;
1964 /* Number of elements allocated in argbuf. */
1966 static int argbuf_length;
1968 /* Number of elements in argbuf currently in use (containing args). */
1970 static int argbuf_index;
1972 /* Position in the argbuf array containing the name of the output file
1973 (the value associated with the "-o" flag). */
1975 static int have_o_argbuf_index = 0;
1977 /* Were the options -c or -S passed. */
1978 static int have_c = 0;
1980 /* Was the option -o passed. */
1981 static int have_o = 0;
1983 /* This is the list of suffixes and codes (%g/%u/%U/%j) and the associated
1984 temp file. If the HOST_BIT_BUCKET is used for %j, no entry is made for
1987 static struct temp_name {
1988 const char *suffix; /* suffix associated with the code. */
1989 int length; /* strlen (suffix). */
1990 int unique; /* Indicates whether %g or %u/%U was used. */
1991 const char *filename; /* associated filename. */
1992 int filename_length; /* strlen (filename). */
1993 struct temp_name *next;
1996 /* Number of commands executed so far. */
1998 static int execution_count;
2000 /* Number of commands that exited with a signal. */
2002 static int signal_count;
2004 /* Name with which this program was invoked. */
2006 static const char *programname;
2008 /* Allocate the argument vector. */
2014 argbuf = XNEWVEC (const char *, argbuf_length);
2017 /* Clear out the vector of arguments (after a command is executed). */
2025 /* Add one argument to the vector at the end.
2026 This is done when a space is seen or at the end of the line.
2027 If DELETE_ALWAYS is nonzero, the arg is a filename
2028 and the file should be deleted eventually.
2029 If DELETE_FAILURE is nonzero, the arg is a filename
2030 and the file should be deleted if this compilation fails. */
2033 store_arg (const char *arg, int delete_always, int delete_failure)
2035 if (argbuf_index + 1 == argbuf_length)
2036 argbuf = XRESIZEVEC (const char *, argbuf, (argbuf_length *= 2));
2038 argbuf[argbuf_index++] = arg;
2039 argbuf[argbuf_index] = 0;
2041 if (strcmp (arg, "-o") == 0)
2042 have_o_argbuf_index = argbuf_index;
2043 if (delete_always || delete_failure)
2044 record_temp_file (arg, delete_always, delete_failure);
2047 /* Load specs from a file name named FILENAME, replacing occurrences of
2048 various different types of line-endings, \r\n, \n\r and just \r, with
2052 load_specs (const char *filename)
2056 struct stat statbuf;
2063 notice ("Reading specs from %s\n", filename);
2065 /* Open and stat the file. */
2066 desc = open (filename, O_RDONLY, 0);
2068 pfatal_with_name (filename);
2069 if (stat (filename, &statbuf) < 0)
2070 pfatal_with_name (filename);
2072 /* Read contents of file into BUFFER. */
2073 buffer = XNEWVEC (char, statbuf.st_size + 1);
2074 readlen = read (desc, buffer, (unsigned) statbuf.st_size);
2076 pfatal_with_name (filename);
2077 buffer[readlen] = 0;
2080 specs = XNEWVEC (char, readlen + 1);
2082 for (buffer_p = buffer; buffer_p && *buffer_p; buffer_p++)
2088 if (buffer_p > buffer && *(buffer_p - 1) == '\n') /* \n\r */
2090 else if (*(buffer_p + 1) == '\n') /* \r\n */
2104 /* Read compilation specs from a file named FILENAME,
2105 replacing the default ones.
2107 A suffix which starts with `*' is a definition for
2108 one of the machine-specific sub-specs. The "suffix" should be
2109 *asm, *cc1, *cpp, *link, *startfile, etc.
2110 The corresponding spec is stored in asm_spec, etc.,
2111 rather than in the `compilers' vector.
2113 Anything invalid in the file is a fatal error. */
2116 read_specs (const char *filename, int main_p)
2121 buffer = load_specs (filename);
2123 /* Scan BUFFER for specs, putting them in the vector. */
2129 char *in, *out, *p1, *p2, *p3;
2131 /* Advance P in BUFFER to the next nonblank nocomment line. */
2132 p = skip_whitespace (p);
2136 /* Is this a special command that starts with '%'? */
2137 /* Don't allow this for the main specs file, since it would
2138 encourage people to overwrite it. */
2139 if (*p == '%' && !main_p)
2142 while (*p && *p != '\n')
2148 if (!strncmp (p1, "%include", sizeof ("%include") - 1)
2149 && (p1[sizeof "%include" - 1] == ' '
2150 || p1[sizeof "%include" - 1] == '\t'))
2154 p1 += sizeof ("%include");
2155 while (*p1 == ' ' || *p1 == '\t')
2158 if (*p1++ != '<' || p[-2] != '>')
2159 fatal ("specs %%include syntax malformed after %ld characters",
2160 (long) (p1 - buffer + 1));
2163 new_filename = find_a_file (&startfile_prefixes, p1, R_OK, true);
2164 read_specs (new_filename ? new_filename : p1, FALSE);
2167 else if (!strncmp (p1, "%include_noerr", sizeof "%include_noerr" - 1)
2168 && (p1[sizeof "%include_noerr" - 1] == ' '
2169 || p1[sizeof "%include_noerr" - 1] == '\t'))
2173 p1 += sizeof "%include_noerr";
2174 while (*p1 == ' ' || *p1 == '\t')
2177 if (*p1++ != '<' || p[-2] != '>')
2178 fatal ("specs %%include syntax malformed after %ld characters",
2179 (long) (p1 - buffer + 1));
2182 new_filename = find_a_file (&startfile_prefixes, p1, R_OK, true);
2184 read_specs (new_filename, FALSE);
2185 else if (verbose_flag)
2186 notice ("could not find specs file %s\n", p1);
2189 else if (!strncmp (p1, "%rename", sizeof "%rename" - 1)
2190 && (p1[sizeof "%rename" - 1] == ' '
2191 || p1[sizeof "%rename" - 1] == '\t'))
2194 struct spec_list *sl;
2195 struct spec_list *newsl;
2197 /* Get original name. */
2198 p1 += sizeof "%rename";
2199 while (*p1 == ' ' || *p1 == '\t')
2202 if (! ISALPHA ((unsigned char) *p1))
2203 fatal ("specs %%rename syntax malformed after %ld characters",
2204 (long) (p1 - buffer));
2207 while (*p2 && !ISSPACE ((unsigned char) *p2))
2210 if (*p2 != ' ' && *p2 != '\t')
2211 fatal ("specs %%rename syntax malformed after %ld characters",
2212 (long) (p2 - buffer));
2216 while (*p2 == ' ' || *p2 == '\t')
2219 if (! ISALPHA ((unsigned char) *p2))
2220 fatal ("specs %%rename syntax malformed after %ld characters",
2221 (long) (p2 - buffer));
2223 /* Get new spec name. */
2225 while (*p3 && !ISSPACE ((unsigned char) *p3))
2229 fatal ("specs %%rename syntax malformed after %ld characters",
2230 (long) (p3 - buffer));
2233 for (sl = specs; sl; sl = sl->next)
2234 if (name_len == sl->name_len && !strcmp (sl->name, p1))
2238 fatal ("specs %s spec was not found to be renamed", p1);
2240 if (strcmp (p1, p2) == 0)
2243 for (newsl = specs; newsl; newsl = newsl->next)
2244 if (strcmp (newsl->name, p2) == 0)
2245 fatal ("%s: attempt to rename spec '%s' to already defined spec '%s'",
2250 notice ("rename spec %s to %s\n", p1, p2);
2252 notice ("spec is '%s'\n\n", *(sl->ptr_spec));
2256 set_spec (p2, *(sl->ptr_spec));
2258 free (CONST_CAST (char *, *(sl->ptr_spec)));
2260 *(sl->ptr_spec) = "";
2265 fatal ("specs unknown %% command after %ld characters",
2266 (long) (p1 - buffer));
2269 /* Find the colon that should end the suffix. */
2271 while (*p1 && *p1 != ':' && *p1 != '\n')
2274 /* The colon shouldn't be missing. */
2276 fatal ("specs file malformed after %ld characters",
2277 (long) (p1 - buffer));
2279 /* Skip back over trailing whitespace. */
2281 while (p2 > buffer && (p2[-1] == ' ' || p2[-1] == '\t'))
2284 /* Copy the suffix to a string. */
2285 suffix = save_string (p, p2 - p);
2286 /* Find the next line. */
2287 p = skip_whitespace (p1 + 1);
2289 fatal ("specs file malformed after %ld characters",
2290 (long) (p - buffer));
2293 /* Find next blank line or end of string. */
2294 while (*p1 && !(*p1 == '\n' && (p1[1] == '\n' || p1[1] == '\0')))
2297 /* Specs end at the blank line and do not include the newline. */
2298 spec = save_string (p, p1 - p);
2301 /* Delete backslash-newline sequences from the spec. */
2306 if (in[0] == '\\' && in[1] == '\n')
2308 else if (in[0] == '#')
2309 while (*in && *in != '\n')
2317 if (suffix[0] == '*')
2319 if (! strcmp (suffix, "*link_command"))
2320 link_command_spec = spec;
2322 set_spec (suffix + 1, spec);
2326 /* Add this pair to the vector. */
2328 = XRESIZEVEC (struct compiler, compilers, n_compilers + 2);
2330 compilers[n_compilers].suffix = suffix;
2331 compilers[n_compilers].spec = spec;
2333 memset (&compilers[n_compilers], 0, sizeof compilers[n_compilers]);
2337 link_command_spec = spec;
2340 if (link_command_spec == 0)
2341 fatal ("spec file has no spec for linking");
2344 /* Record the names of temporary files we tell compilers to write,
2345 and delete them at the end of the run. */
2347 /* This is the common prefix we use to make temp file names.
2348 It is chosen once for each run of this program.
2349 It is substituted into a spec by %g or %j.
2350 Thus, all temp file names contain this prefix.
2351 In practice, all temp file names start with this prefix.
2353 This prefix comes from the envvar TMPDIR if it is defined;
2354 otherwise, from the P_tmpdir macro if that is defined;
2355 otherwise, in /usr/tmp or /tmp;
2356 or finally the current directory if all else fails. */
2358 static const char *temp_filename;
2360 /* Length of the prefix. */
2362 static int temp_filename_length;
2364 /* Define the list of temporary files to delete. */
2369 struct temp_file *next;
2372 /* Queue of files to delete on success or failure of compilation. */
2373 static struct temp_file *always_delete_queue;
2374 /* Queue of files to delete on failure of compilation. */
2375 static struct temp_file *failure_delete_queue;
2377 /* Record FILENAME as a file to be deleted automatically.
2378 ALWAYS_DELETE nonzero means delete it if all compilation succeeds;
2379 otherwise delete it in any case.
2380 FAIL_DELETE nonzero means delete it if a compilation step fails;
2381 otherwise delete it in any case. */
2384 record_temp_file (const char *filename, int always_delete, int fail_delete)
2386 char *const name = xstrdup (filename);
2390 struct temp_file *temp;
2391 for (temp = always_delete_queue; temp; temp = temp->next)
2392 if (! strcmp (name, temp->name))
2395 temp = XNEW (struct temp_file);
2396 temp->next = always_delete_queue;
2398 always_delete_queue = temp;
2405 struct temp_file *temp;
2406 for (temp = failure_delete_queue; temp; temp = temp->next)
2407 if (! strcmp (name, temp->name))
2410 temp = XNEW (struct temp_file);
2411 temp->next = failure_delete_queue;
2413 failure_delete_queue = temp;
2419 /* Delete all the temporary files whose names we previously recorded. */
2421 #ifndef DELETE_IF_ORDINARY
2422 #define DELETE_IF_ORDINARY(NAME,ST,VERBOSE_FLAG) \
2425 if (stat (NAME, &ST) >= 0 && S_ISREG (ST.st_mode)) \
2426 if (unlink (NAME) < 0) \
2428 perror_with_name (NAME); \
2433 delete_if_ordinary (const char *name)
2439 printf ("Delete %s? (y or n) ", name);
2443 while ((c = getchar ()) != '\n' && c != EOF)
2446 if (i == 'y' || i == 'Y')
2448 DELETE_IF_ORDINARY (name, st, verbose_flag);
2452 delete_temp_files (void)
2454 struct temp_file *temp;
2456 for (temp = always_delete_queue; temp; temp = temp->next)
2457 delete_if_ordinary (temp->name);
2458 always_delete_queue = 0;
2461 /* Delete all the files to be deleted on error. */
2464 delete_failure_queue (void)
2466 struct temp_file *temp;
2468 for (temp = failure_delete_queue; temp; temp = temp->next)
2469 delete_if_ordinary (temp->name);
2473 clear_failure_queue (void)
2475 failure_delete_queue = 0;
2478 /* Call CALLBACK for each path in PATHS, breaking out early if CALLBACK
2480 If DO_MULTI is true iterate over the paths twice, first with multilib
2481 suffix then without, otherwise iterate over the paths once without
2482 adding a multilib suffix. When DO_MULTI is true, some attempt is made
2483 to avoid visiting the same path twice, but we could do better. For
2484 instance, /usr/lib/../lib is considered different from /usr/lib.
2485 At least EXTRA_SPACE chars past the end of the path passed to
2486 CALLBACK are available for use by the callback.
2487 CALLBACK_INFO allows extra parameters to be passed to CALLBACK.
2489 Returns the value returned by CALLBACK. */
2492 for_each_path (const struct path_prefix *paths,
2495 void *(*callback) (char *, void *),
2496 void *callback_info)
2498 struct prefix_list *pl;
2499 const char *multi_dir = NULL;
2500 const char *multi_os_dir = NULL;
2501 const char *multi_suffix;
2502 const char *just_multi_suffix;
2505 bool skip_multi_dir = false;
2506 bool skip_multi_os_dir = false;
2508 multi_suffix = machine_suffix;
2509 just_multi_suffix = just_machine_suffix;
2510 if (do_multi && multilib_dir && strcmp (multilib_dir, ".") != 0)
2512 multi_dir = concat (multilib_dir, dir_separator_str, NULL);
2513 multi_suffix = concat (multi_suffix, multi_dir, NULL);
2514 just_multi_suffix = concat (just_multi_suffix, multi_dir, NULL);
2516 if (do_multi && multilib_os_dir && strcmp (multilib_os_dir, ".") != 0)
2517 multi_os_dir = concat (multilib_os_dir, dir_separator_str, NULL);
2521 size_t multi_dir_len = 0;
2522 size_t multi_os_dir_len = 0;
2524 size_t just_suffix_len;
2528 multi_dir_len = strlen (multi_dir);
2530 multi_os_dir_len = strlen (multi_os_dir);
2531 suffix_len = strlen (multi_suffix);
2532 just_suffix_len = strlen (just_multi_suffix);
2536 len = paths->max_len + extra_space + 1;
2537 if (suffix_len > multi_os_dir_len)
2540 len += multi_os_dir_len;
2541 path = XNEWVEC (char, len);
2544 for (pl = paths->plist; pl != 0; pl = pl->next)
2546 len = strlen (pl->prefix);
2547 memcpy (path, pl->prefix, len);
2549 /* Look first in MACHINE/VERSION subdirectory. */
2550 if (!skip_multi_dir)
2552 memcpy (path + len, multi_suffix, suffix_len + 1);
2553 ret = callback (path, callback_info);
2558 /* Some paths are tried with just the machine (ie. target)
2559 subdir. This is used for finding as, ld, etc. */
2561 && pl->require_machine_suffix == 2)
2563 memcpy (path + len, just_multi_suffix, just_suffix_len + 1);
2564 ret = callback (path, callback_info);
2569 /* Now try the base path. */
2570 if (!pl->require_machine_suffix
2571 && !(pl->os_multilib ? skip_multi_os_dir : skip_multi_dir))
2573 const char *this_multi;
2574 size_t this_multi_len;
2576 if (pl->os_multilib)
2578 this_multi = multi_os_dir;
2579 this_multi_len = multi_os_dir_len;
2583 this_multi = multi_dir;
2584 this_multi_len = multi_dir_len;
2588 memcpy (path + len, this_multi, this_multi_len + 1);
2592 ret = callback (path, callback_info);
2600 if (multi_dir == NULL && multi_os_dir == NULL)
2603 /* Run through the paths again, this time without multilibs.
2604 Don't repeat any we have already seen. */
2607 free (CONST_CAST (char *, multi_dir));
2609 free (CONST_CAST (char *, multi_suffix));
2610 multi_suffix = machine_suffix;
2611 free (CONST_CAST (char *, just_multi_suffix));
2612 just_multi_suffix = just_machine_suffix;
2615 skip_multi_dir = true;
2618 free (CONST_CAST (char *, multi_os_dir));
2619 multi_os_dir = NULL;
2622 skip_multi_os_dir = true;
2627 free (CONST_CAST (char *, multi_dir));
2628 free (CONST_CAST (char *, multi_suffix));
2629 free (CONST_CAST (char *, just_multi_suffix));
2632 free (CONST_CAST (char *, multi_os_dir));
2638 /* Callback for build_search_list. Adds path to obstack being built. */
2640 struct add_to_obstack_info {
2647 add_to_obstack (char *path, void *data)
2649 struct add_to_obstack_info *info = (struct add_to_obstack_info *) data;
2651 if (info->check_dir && !is_directory (path, false))
2654 if (!info->first_time)
2655 obstack_1grow (info->ob, PATH_SEPARATOR);
2657 obstack_grow (info->ob, path, strlen (path));
2659 info->first_time = false;
2663 /* Add or change the value of an environment variable, outputting the
2664 change to standard error if in verbose mode. */
2666 xputenv (const char *string)
2669 notice ("%s\n", string);
2670 putenv (CONST_CAST (char *, string));
2673 /* Build a list of search directories from PATHS.
2674 PREFIX is a string to prepend to the list.
2675 If CHECK_DIR_P is true we ensure the directory exists.
2676 If DO_MULTI is true, multilib paths are output first, then
2678 This is used mostly by putenv_from_prefixes so we use `collect_obstack'.
2679 It is also used by the --print-search-dirs flag. */
2682 build_search_list (const struct path_prefix *paths, const char *prefix,
2683 bool check_dir, bool do_multi)
2685 struct add_to_obstack_info info;
2687 info.ob = &collect_obstack;
2688 info.check_dir = check_dir;
2689 info.first_time = true;
2691 obstack_grow (&collect_obstack, prefix, strlen (prefix));
2692 obstack_1grow (&collect_obstack, '=');
2694 for_each_path (paths, do_multi, 0, add_to_obstack, &info);
2696 obstack_1grow (&collect_obstack, '\0');
2697 return XOBFINISH (&collect_obstack, char *);
2700 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
2704 putenv_from_prefixes (const struct path_prefix *paths, const char *env_var,
2707 xputenv (build_search_list (paths, env_var, true, do_multi));
2710 /* Check whether NAME can be accessed in MODE. This is like access,
2711 except that it never considers directories to be executable. */
2714 access_check (const char *name, int mode)
2720 if (stat (name, &st) < 0
2721 || S_ISDIR (st.st_mode))
2725 return access (name, mode);
2728 /* Callback for find_a_file. Appends the file name to the directory
2729 path. If the resulting file exists in the right mode, return the
2730 full pathname to the file. */
2732 struct file_at_path_info {
2741 file_at_path (char *path, void *data)
2743 struct file_at_path_info *info = (struct file_at_path_info *) data;
2744 size_t len = strlen (path);
2746 memcpy (path + len, info->name, info->name_len);
2747 len += info->name_len;
2749 /* Some systems have a suffix for executable files.
2750 So try appending that first. */
2751 if (info->suffix_len)
2753 memcpy (path + len, info->suffix, info->suffix_len + 1);
2754 if (access_check (path, info->mode) == 0)
2759 if (access_check (path, info->mode) == 0)
2765 /* Search for NAME using the prefix list PREFIXES. MODE is passed to
2766 access to check permissions. If DO_MULTI is true, search multilib
2767 paths then non-multilib paths, otherwise do not search multilib paths.
2768 Return 0 if not found, otherwise return its name, allocated with malloc. */
2771 find_a_file (const struct path_prefix *pprefix, const char *name, int mode,
2774 struct file_at_path_info info;
2776 #ifdef DEFAULT_ASSEMBLER
2777 if (! strcmp (name, "as") && access (DEFAULT_ASSEMBLER, mode) == 0)
2778 return xstrdup (DEFAULT_ASSEMBLER);
2781 #ifdef DEFAULT_LINKER
2782 if (! strcmp(name, "ld") && access (DEFAULT_LINKER, mode) == 0)
2783 return xstrdup (DEFAULT_LINKER);
2786 /* Determine the filename to execute (special case for absolute paths). */
2788 if (IS_ABSOLUTE_PATH (name))
2790 if (access (name, mode) == 0)
2791 return xstrdup (name);
2797 info.suffix = (mode & X_OK) != 0 ? HOST_EXECUTABLE_SUFFIX : "";
2798 info.name_len = strlen (info.name);
2799 info.suffix_len = strlen (info.suffix);
2802 return (char*) for_each_path (pprefix, do_multi,
2803 info.name_len + info.suffix_len,
2804 file_at_path, &info);
2807 /* Ranking of prefixes in the sort list. -B prefixes are put before
2810 enum path_prefix_priority
2812 PREFIX_PRIORITY_B_OPT,
2813 PREFIX_PRIORITY_LAST
2816 /* Add an entry for PREFIX in PLIST. The PLIST is kept in ascending
2817 order according to PRIORITY. Within each PRIORITY, new entries are
2820 If WARN is nonzero, we will warn if no file is found
2821 through this prefix. WARN should point to an int
2822 which will be set to 1 if this entry is used.
2824 COMPONENT is the value to be passed to update_path.
2826 REQUIRE_MACHINE_SUFFIX is 1 if this prefix can't be used without
2827 the complete value of machine_suffix.
2828 2 means try both machine_suffix and just_machine_suffix. */
2831 add_prefix (struct path_prefix *pprefix, const char *prefix,
2832 const char *component, /* enum prefix_priority */ int priority,
2833 int require_machine_suffix, int os_multilib)
2835 struct prefix_list *pl, **prev;
2838 for (prev = &pprefix->plist;
2839 (*prev) != NULL && (*prev)->priority <= priority;
2840 prev = &(*prev)->next)
2843 /* Keep track of the longest prefix. */
2845 prefix = update_path (prefix, component);
2846 len = strlen (prefix);
2847 if (len > pprefix->max_len)
2848 pprefix->max_len = len;
2850 pl = XNEW (struct prefix_list);
2851 pl->prefix = prefix;
2852 pl->require_machine_suffix = require_machine_suffix;
2853 pl->priority = priority;
2854 pl->os_multilib = os_multilib;
2856 /* Insert after PREV. */
2861 /* Same as add_prefix, but prepending target_system_root to prefix. */
2862 /* The target_system_root prefix has been relocated by gcc_exec_prefix. */
2864 add_sysrooted_prefix (struct path_prefix *pprefix, const char *prefix,
2865 const char *component,
2866 /* enum prefix_priority */ int priority,
2867 int require_machine_suffix, int os_multilib)
2869 if (!IS_ABSOLUTE_PATH (prefix))
2870 fatal ("system path '%s' is not absolute", prefix);
2872 if (target_system_root)
2874 if (target_sysroot_suffix)
2875 prefix = concat (target_sysroot_suffix, prefix, NULL);
2876 prefix = concat (target_system_root, prefix, NULL);
2878 /* We have to override this because GCC's notion of sysroot
2879 moves along with GCC. */
2883 add_prefix (pprefix, prefix, component, priority,
2884 require_machine_suffix, os_multilib);
2887 /* Execute the command specified by the arguments on the current line of spec.
2888 When using pipes, this includes several piped-together commands
2889 with `|' between them.
2891 Return 0 if successful, -1 if failed. */
2897 int n_commands; /* # of command. */
2899 struct pex_obj *pex;
2902 const char *prog; /* program name. */
2903 const char **argv; /* vector of args. */
2906 struct command *commands; /* each command buffer with above info. */
2908 gcc_assert (!processing_spec_function);
2912 string = find_a_file (&exec_prefixes, argbuf[0], X_OK, false);
2913 argbuf[0] = (string) ? string : argbuf[0];
2914 insert_wrapper (wrapper_string);
2917 /* Count # of piped commands. */
2918 for (n_commands = 1, i = 0; i < argbuf_index; i++)
2919 if (strcmp (argbuf[i], "|") == 0)
2922 /* Get storage for each command. */
2923 commands = (struct command *) alloca (n_commands * sizeof (struct command));
2925 /* Split argbuf into its separate piped processes,
2926 and record info about each one.
2927 Also search for the programs that are to be run. */
2929 commands[0].prog = argbuf[0]; /* first command. */
2930 commands[0].argv = &argbuf[0];
2932 if (!wrapper_string)
2934 string = find_a_file (&exec_prefixes, commands[0].prog, X_OK, false);
2935 commands[0].argv[0] = (string) ? string : commands[0].argv[0];
2938 for (n_commands = 1, i = 0; i < argbuf_index; i++)
2939 if (strcmp (argbuf[i], "|") == 0)
2940 { /* each command. */
2941 #if defined (__MSDOS__) || defined (OS2) || defined (VMS)
2942 fatal ("-pipe not supported");
2944 argbuf[i] = 0; /* termination of command args. */
2945 commands[n_commands].prog = argbuf[i + 1];
2946 commands[n_commands].argv = &argbuf[i + 1];
2947 string = find_a_file (&exec_prefixes, commands[n_commands].prog,
2950 commands[n_commands].argv[0] = string;
2954 argbuf[argbuf_index] = 0;
2956 /* If -v, print what we are about to do, and maybe query. */
2960 /* For help listings, put a blank line between sub-processes. */
2961 if (print_help_list)
2962 fputc ('\n', stderr);
2964 /* Print each piped command as a separate line. */
2965 for (i = 0; i < n_commands; i++)
2967 const char *const *j;
2969 if (verbose_only_flag)
2971 for (j = commands[i].argv; *j; j++)
2974 fprintf (stderr, " \"");
2975 for (p = *j; *p; ++p)
2977 if (*p == '"' || *p == '\\' || *p == '$')
2978 fputc ('\\', stderr);
2981 fputc ('"', stderr);
2985 for (j = commands[i].argv; *j; j++)
2986 fprintf (stderr, " %s", *j);
2988 /* Print a pipe symbol after all but the last command. */
2989 if (i + 1 != n_commands)
2990 fprintf (stderr, " |");
2991 fprintf (stderr, "\n");
2994 if (verbose_only_flag != 0)
2996 /* verbose_only_flag should act as if the spec was
2997 executed, so increment execution_count before
2998 returning. This prevents spurious warnings about
2999 unused linker input files, etc. */
3004 notice ("\nGo ahead? (y or n) ");
3008 while (getchar () != '\n')
3011 if (i != 'y' && i != 'Y')
3016 #ifdef ENABLE_VALGRIND_CHECKING
3017 /* Run the each command through valgrind. To simplify prepending the
3018 path to valgrind and the option "-q" (for quiet operation unless
3019 something triggers), we allocate a separate argv array. */
3021 for (i = 0; i < n_commands; i++)
3027 for (argc = 0; commands[i].argv[argc] != NULL; argc++)
3030 argv = XALLOCAVEC (const char *, argc + 3);
3032 argv[0] = VALGRIND_PATH;
3034 for (j = 2; j < argc + 2; j++)
3035 argv[j] = commands[i].argv[j - 2];
3038 commands[i].argv = argv;
3039 commands[i].prog = argv[0];
3043 /* Run each piped subprocess. */
3045 pex = pex_init (PEX_USE_PIPES | ((report_times || report_times_to_file)
3046 ? PEX_RECORD_TIMES : 0),
3047 programname, temp_filename);
3049 pfatal_with_name (_("pex_init failed"));
3051 for (i = 0; i < n_commands; i++)
3055 const char *string = commands[i].argv[0];
3057 errmsg = pex_run (pex,
3058 ((i + 1 == n_commands ? PEX_LAST : 0)
3059 | (string == commands[i].prog ? PEX_SEARCH : 0)),
3060 string, CONST_CAST (char **, commands[i].argv),
3069 pfatal_with_name (errmsg);
3073 if (string != commands[i].prog)
3074 free (CONST_CAST (char *, string));
3079 /* Wait for all the subprocesses to finish. */
3083 struct pex_time *times = NULL;
3086 statuses = (int *) alloca (n_commands * sizeof (int));
3087 if (!pex_get_status (pex, n_commands, statuses))
3088 pfatal_with_name (_("failed to get exit status"));
3090 if (report_times || report_times_to_file)
3092 times = (struct pex_time *) alloca (n_commands * sizeof (struct pex_time));
3093 if (!pex_get_times (pex, n_commands, times))
3094 pfatal_with_name (_("failed to get process times"));
3099 for (i = 0; i < n_commands; ++i)
3101 int status = statuses[i];
3103 if (WIFSIGNALED (status))
3106 /* SIGPIPE is a special case. It happens in -pipe mode
3107 when the compiler dies before the preprocessor is done,
3108 or the assembler dies before the compiler is done.
3109 There's generally been an error already, and this is
3110 just fallout. So don't generate another error unless
3111 we would otherwise have succeeded. */
3112 if (WTERMSIG (status) == SIGPIPE
3113 && (signal_count || greatest_status >= MIN_FATAL_STATUS))
3121 Internal error: %s (program %s)\n\
3122 Please submit a full bug report.\n\
3123 See %s for instructions.",
3124 strsignal (WTERMSIG (status)), commands[i].prog,
3127 else if (WIFEXITED (status)
3128 && WEXITSTATUS (status) >= MIN_FATAL_STATUS)
3130 if (WEXITSTATUS (status) > greatest_status)
3131 greatest_status = WEXITSTATUS (status);
3135 if (report_times || report_times_to_file)
3137 struct pex_time *pt = ×[i];
3140 ut = ((double) pt->user_seconds
3141 + (double) pt->user_microseconds / 1.0e6);
3142 st = ((double) pt->system_seconds
3143 + (double) pt->system_microseconds / 1.0e6);
3148 notice ("# %s %.2f %.2f\n", commands[i].prog, ut, st);
3150 if (report_times_to_file)
3153 const char *const *j;
3155 fprintf (report_times_to_file, "%g %g", ut, st);
3157 for (j = &commands[i].prog; *j; j = &commands[i].argv[++c])
3160 for (p = *j; *p; ++p)
3161 if (*p == '"' || *p == '\\' || *p == '$'
3167 fprintf (report_times_to_file, " \"");
3168 for (p = *j; *p; ++p)
3170 if (*p == '"' || *p == '\\' || *p == '$')
3171 fputc ('\\', report_times_to_file);
3172 fputc (*p, report_times_to_file);
3174 fputc ('"', report_times_to_file);
3177 fprintf (report_times_to_file, " %s", *j);
3180 fputc ('\n', report_times_to_file);
3190 /* Find all the switches given to us
3191 and make a vector describing them.
3192 The elements of the vector are strings, one per switch given.
3193 If a switch uses following arguments, then the `part1' field
3194 is the switch itself and the `args' field
3195 is a null-terminated vector containing the following arguments.
3196 Bits in the `live_cond' field are:
3197 SWITCH_LIVE to indicate this switch is true in a conditional spec.
3198 SWITCH_FALSE to indicate this switch is overridden by a later switch.
3199 SWITCH_IGNORE to indicate this switch should be ignored (used in %<S).
3200 The `validated' field is nonzero if any spec has looked at this switch;
3201 if it remains zero at the end of the run, it must be meaningless. */
3203 #define SWITCH_LIVE 0x1
3204 #define SWITCH_FALSE 0x2
3205 #define SWITCH_IGNORE 0x4
3211 unsigned int live_cond;
3212 unsigned char validated;
3213 unsigned char ordering;
3216 static struct switchstr *switches;
3218 static int n_switches;
3220 /* Set to zero if -fcompare-debug is disabled, positive if it's
3221 enabled and we're running the first compilation, negative if it's
3222 enabled and we're running the second compilation. For most of the
3223 time, it's in the range -1..1, but it can be temporarily set to 2
3224 or 3 to indicate that the -fcompare-debug flags didn't come from
3225 the command-line, but rather from the GCC_COMPARE_DEBUG environment
3226 variable, until a synthesized -fcompare-debug flag is added to the
3230 /* Set to nonzero if we've seen the -fcompare-debug-second flag. */
3231 int compare_debug_second;
3233 /* Set to the flags that should be passed to the second compilation in
3234 a -fcompare-debug compilation. */
3235 const char *compare_debug_opt;
3237 static struct switchstr *switches_debug_check[2];
3239 static int n_switches_debug_check[2];
3241 static char *debug_check_temp_file[2];
3243 /* Language is one of three things:
3245 1) The name of a real programming language.
3246 2) NULL, indicating that no one has figured out
3248 3) '*', indicating that the file should be passed
3253 const char *language;
3254 struct compiler *incompiler;
3259 /* Also a vector of input files specified. */
3261 static struct infile *infiles;
3265 /* True if multiple input files are being compiled to a single
3268 static bool combine_inputs;
3270 /* This counts the number of libraries added by lang_specific_driver, so that
3271 we can tell if there were any user supplied any files or libraries. */
3273 static int added_libraries;
3275 /* And a vector of corresponding output files is made up later. */
3277 const char **outfiles;
3279 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3281 /* Convert NAME to a new name if it is the standard suffix. DO_EXE
3282 is true if we should look for an executable suffix. DO_OBJ
3283 is true if we should look for an object suffix. */
3286 convert_filename (const char *name, int do_exe ATTRIBUTE_UNUSED,
3287 int do_obj ATTRIBUTE_UNUSED)
3289 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3297 len = strlen (name);
3299 #ifdef HAVE_TARGET_OBJECT_SUFFIX
3300 /* Convert x.o to x.obj if TARGET_OBJECT_SUFFIX is ".obj". */
3301 if (do_obj && len > 2
3302 && name[len - 2] == '.'
3303 && name[len - 1] == 'o')
3305 obstack_grow (&obstack, name, len - 2);
3306 obstack_grow0 (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX));
3307 name = XOBFINISH (&obstack, const char *);
3311 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3312 /* If there is no filetype, make it the executable suffix (which includes
3313 the "."). But don't get confused if we have just "-o". */
3314 if (! do_exe || TARGET_EXECUTABLE_SUFFIX[0] == 0 || (len == 2 && name[0] == '-'))
3317 for (i = len - 1; i >= 0; i--)
3318 if (IS_DIR_SEPARATOR (name[i]))
3321 for (i++; i < len; i++)
3325 obstack_grow (&obstack, name, len);
3326 obstack_grow0 (&obstack, TARGET_EXECUTABLE_SUFFIX,
3327 strlen (TARGET_EXECUTABLE_SUFFIX));
3328 name = XOBFINISH (&obstack, const char *);
3335 /* Display the command line switches accepted by gcc. */
3339 printf (_("Usage: %s [options] file...\n"), programname);
3340 fputs (_("Options:\n"), stdout);
3342 fputs (_(" -pass-exit-codes Exit with highest error code from a phase\n"), stdout);
3343 fputs (_(" --help Display this information\n"), stdout);
3344 fputs (_(" --target-help Display target specific command line options\n"), stdout);
3345 fputs (_(" --help={target|optimizers|warnings|params|[^]{joined|separate|undocumented}}[,...]\n"), stdout);
3346 fputs (_(" Display specific types of command line options\n"), stdout);
3348 fputs (_(" (Use '-v --help' to display command line options of sub-processes)\n"), stdout);
3349 fputs (_(" --version Display compiler version information\n"), stdout);
3350 fputs (_(" -dumpspecs Display all of the built in spec strings\n"), stdout);
3351 fputs (_(" -dumpversion Display the version of the compiler\n"), stdout);
3352 fputs (_(" -dumpmachine Display the compiler's target processor\n"), stdout);
3353 fputs (_(" -print-search-dirs Display the directories in the compiler's search path\n"), stdout);
3354 fputs (_(" -print-libgcc-file-name Display the name of the compiler's companion library\n"), stdout);
3355 fputs (_(" -print-file-name=<lib> Display the full path to library <lib>\n"), stdout);
3356 fputs (_(" -print-prog-name=<prog> Display the full path to compiler component <prog>\n"), stdout);
3357 fputs (_(" -print-multi-directory Display the root directory for versions of libgcc\n"), stdout);
3359 -print-multi-lib Display the mapping between command line options and\n\
3360 multiple library search directories\n"), stdout);
3361 fputs (_(" -print-multi-os-directory Display the relative path to OS libraries\n"), stdout);
3362 fputs (_(" -print-sysroot Display the target libraries directory\n"), stdout);
3363 fputs (_(" -print-sysroot-headers-suffix Display the sysroot suffix used to find headers\n"), stdout);
3364 fputs (_(" -Wa,<options> Pass comma-separated <options> on to the assembler\n"), stdout);
3365 fputs (_(" -Wp,<options> Pass comma-separated <options> on to the preprocessor\n"), stdout);
3366 fputs (_(" -Wl,<options> Pass comma-separated <options> on to the linker\n"), stdout);
3367 fputs (_(" -Xassembler <arg> Pass <arg> on to the assembler\n"), stdout);
3368 fputs (_(" -Xpreprocessor <arg> Pass <arg> on to the preprocessor\n"), stdout);
3369 fputs (_(" -Xlinker <arg> Pass <arg> on to the linker\n"), stdout);
3370 fputs (_(" -combine Pass multiple source files to compiler at once\n"), stdout);
3371 fputs (_(" -save-temps Do not delete intermediate files\n"), stdout);
3372 fputs (_(" -save-temps=<arg> Do not delete intermediate files\n"), stdout);
3374 -no-canonical-prefixes Do not canonicalize paths when building relative\n\
3375 prefixes to other gcc components\n"), stdout);
3376 fputs (_(" -pipe Use pipes rather than intermediate files\n"), stdout);
3377 fputs (_(" -time Time the execution of each subprocess\n"), stdout);
3378 fputs (_(" -specs=<file> Override built-in specs with the contents of <file>\n"), stdout);
3379 fputs (_(" -std=<standard> Assume that the input sources are for <standard>\n"), stdout);
3381 --sysroot=<directory> Use <directory> as the root directory for headers\n\
3382 and libraries\n"), stdout);
3383 fputs (_(" -B <directory> Add <directory> to the compiler's search paths\n"), stdout);
3384 fputs (_(" -b <machine> Run gcc for target <machine>, if installed\n"), stdout);
3385 fputs (_(" -V <version> Run gcc version number <version>, if installed\n"), stdout);
3386 fputs (_(" -v Display the programs invoked by the compiler\n"), stdout);
3387 fputs (_(" -### Like -v but options quoted and commands not executed\n"), stdout);
3388 fputs (_(" -E Preprocess only; do not compile, assemble or link\n"), stdout);
3389 fputs (_(" -S Compile only; do not assemble or link\n"), stdout);
3390 fputs (_(" -c Compile and assemble, but do not link\n"), stdout);
3391 fputs (_(" -o <file> Place the output into <file>\n"), stdout);
3393 -x <language> Specify the language of the following input files\n\
3394 Permissible languages include: c c++ assembler none\n\
3395 'none' means revert to the default behavior of\n\
3396 guessing the language based on the file's extension\n\
3400 \nOptions starting with -g, -f, -m, -O, -W, or --param are automatically\n\
3401 passed on to the various sub-processes invoked by %s. In order to pass\n\
3402 other options on to these processes the -W<letter> options must be used.\n\
3405 /* The rest of the options are displayed by invocations of the various
3410 add_preprocessor_option (const char *option, int len)
3412 n_preprocessor_options++;
3414 if (! preprocessor_options)
3415 preprocessor_options = XNEWVEC (char *, n_preprocessor_options);
3417 preprocessor_options = XRESIZEVEC (char *, preprocessor_options,
3418 n_preprocessor_options);
3420 preprocessor_options [n_preprocessor_options - 1] =
3421 save_string (option, len);
3425 add_assembler_option (const char *option, int len)
3427 n_assembler_options++;
3429 if (! assembler_options)
3430 assembler_options = XNEWVEC (char *, n_assembler_options);
3432 assembler_options = XRESIZEVEC (char *, assembler_options,
3433 n_assembler_options);
3435 assembler_options [n_assembler_options - 1] = save_string (option, len);
3439 add_linker_option (const char *option, int len)
3443 if (! linker_options)
3444 linker_options = XNEWVEC (char *, n_linker_options);
3446 linker_options = XRESIZEVEC (char *, linker_options, n_linker_options);
3448 linker_options [n_linker_options - 1] = save_string (option, len);
3451 /* Create the vector `switches' and its contents.
3452 Store its length in `n_switches'. */
3455 process_command (int argc, const char **argv)
3460 const char *spec_lang = 0;
3461 int last_language_n_infiles;
3462 int lang_n_infiles = 0;
3463 #ifdef MODIFY_TARGET_NAME
3464 int is_modify_target_name;
3467 const char *tooldir_prefix;
3468 char *(*get_relative_prefix) (const char *, const char *,
3469 const char *) = NULL;
3471 GET_ENVIRONMENT (gcc_exec_prefix, "GCC_EXEC_PREFIX");
3475 added_libraries = 0;
3477 /* Figure compiler version from version string. */
3479 compiler_version = temp1 = xstrdup (version_string);
3481 for (; *temp1; ++temp1)
3490 /* If there is a -V or -b option (or both), process it now, before
3491 trying to interpret the rest of the command line.
3492 Use heuristic that all configuration names must have at least
3493 one dash '-'. This allows us to pass options starting with -b. */
3494 if (argc > 1 && argv[1][0] == '-'
3495 && (argv[1][1] == 'V'
3496 || (argv[1][1] == 'b'
3497 && (argv[1][2] == '\0'
3498 || NULL != strchr (argv[1] + 2, '-')))))
3500 const char *new_version = DEFAULT_TARGET_VERSION;
3501 const char *new_machine = DEFAULT_TARGET_MACHINE;
3502 const char *progname = argv[0];
3510 while (argc > 1 && argv[1][0] == '-'
3511 && (argv[1][1] == 'V'
3512 || (argv[1][1] == 'b'
3513 && (argv[1][2] == '\0'
3514 || NULL != strchr (argv[1] + 2, '-')))))
3516 char opt = argv[1][1];
3518 if (argv[1][2] != '\0')
3531 fatal ("'-%c' option must have argument", opt);
3538 for (baselen = strlen (progname); baselen > 0; baselen--)
3539 if (IS_DIR_SEPARATOR (progname[baselen-1]))
3541 new_argv0 = XDUPVAR (char, progname, baselen,
3542 baselen + concat_length (new_version, new_machine,
3543 "-gcc-", NULL) + 1);
3544 strcpy (new_argv0 + baselen, new_machine);
3545 strcat (new_argv0, "-gcc-");
3546 strcat (new_argv0, new_version);
3548 new_argv = XDUPVEC (char *, argv, argc + 1);
3549 new_argv[0] = new_argv0;
3551 errmsg = pex_one (PEX_SEARCH, new_argv0, new_argv, progname, NULL,
3552 NULL, &status, &err);
3557 fatal ("couldn't run '%s': %s", new_argv0, errmsg);
3559 fatal ("couldn't run '%s': %s: %s", new_argv0, errmsg,
3565 /* Convert new-style -- options to old-style. */
3566 translate_options (&argc,
3567 CONST_CAST2 (const char *const **, const char ***,
3570 /* Do language-specific adjustment/addition of flags. */
3571 lang_specific_driver (&argc,
3572 CONST_CAST2 (const char *const **, const char ***,
3576 /* Handle any -no-canonical-prefixes flag early, to assign the function
3577 that builds relative prefixes. This function creates default search
3578 paths that are needed later in normal option handling. */
3580 for (i = 1; i < argc; i++)
3582 if (! strcmp (argv[i], "-no-canonical-prefixes"))
3584 get_relative_prefix = make_relative_prefix_ignore_links;
3588 if (! get_relative_prefix)
3589 get_relative_prefix = make_relative_prefix;
3591 /* Set up the default search paths. If there is no GCC_EXEC_PREFIX,
3592 see if we can create it from the pathname specified in argv[0]. */
3594 gcc_libexec_prefix = standard_libexec_prefix;
3596 /* FIXME: make_relative_prefix doesn't yet work for VMS. */
3597 if (!gcc_exec_prefix)
3599 gcc_exec_prefix = get_relative_prefix (argv[0],
3600 standard_bindir_prefix,
3601 standard_exec_prefix);
3602 gcc_libexec_prefix = get_relative_prefix (argv[0],
3603 standard_bindir_prefix,
3604 standard_libexec_prefix);
3605 if (gcc_exec_prefix)
3606 xputenv (concat ("GCC_EXEC_PREFIX=", gcc_exec_prefix, NULL));
3610 /* make_relative_prefix requires a program name, but
3611 GCC_EXEC_PREFIX is typically a directory name with a trailing
3612 / (which is ignored by make_relative_prefix), so append a
3614 char *tmp_prefix = concat (gcc_exec_prefix, "gcc", NULL);
3615 gcc_libexec_prefix = get_relative_prefix (tmp_prefix,
3616 standard_exec_prefix,
3617 standard_libexec_prefix);
3619 /* The path is unrelocated, so fallback to the original setting. */
3620 if (!gcc_libexec_prefix)
3621 gcc_libexec_prefix = standard_libexec_prefix;
3627 /* From this point onward, gcc_exec_prefix is non-null if the toolchain
3628 is relocated. The toolchain was either relocated using GCC_EXEC_PREFIX
3629 or an automatically created GCC_EXEC_PREFIX from argv[0]. */
3631 if (gcc_exec_prefix)
3633 int len = strlen (gcc_exec_prefix);
3635 if (len > (int) sizeof ("/lib/gcc/") - 1
3636 && (IS_DIR_SEPARATOR (gcc_exec_prefix[len-1])))
3638 temp = gcc_exec_prefix + len - sizeof ("/lib/gcc/") + 1;
3639 if (IS_DIR_SEPARATOR (*temp)
3640 && strncmp (temp + 1, "lib", 3) == 0
3641 && IS_DIR_SEPARATOR (temp[4])
3642 && strncmp (temp + 5, "gcc", 3) == 0)
3643 len -= sizeof ("/lib/gcc/") - 1;
3646 set_std_prefix (gcc_exec_prefix, len);
3647 add_prefix (&exec_prefixes, gcc_libexec_prefix, "GCC",
3648 PREFIX_PRIORITY_LAST, 0, 0);
3649 add_prefix (&startfile_prefixes, gcc_exec_prefix, "GCC",
3650 PREFIX_PRIORITY_LAST, 0, 0);
3653 /* COMPILER_PATH and LIBRARY_PATH have values
3654 that are lists of directory names with colons. */
3656 GET_ENVIRONMENT (temp, "COMPILER_PATH");
3659 const char *startp, *endp;
3660 char *nstore = (char *) alloca (strlen (temp) + 3);
3662 startp = endp = temp;
3665 if (*endp == PATH_SEPARATOR || *endp == 0)
3667 strncpy (nstore, startp, endp - startp);
3669 strcpy (nstore, concat (".", dir_separator_str, NULL));
3670 else if (!IS_DIR_SEPARATOR (endp[-1]))
3672 nstore[endp - startp] = DIR_SEPARATOR;
3673 nstore[endp - startp + 1] = 0;
3676 nstore[endp - startp] = 0;
3677 add_prefix (&exec_prefixes, nstore, 0,
3678 PREFIX_PRIORITY_LAST, 0, 0);
3679 add_prefix (&include_prefixes, nstore, 0,
3680 PREFIX_PRIORITY_LAST, 0, 0);
3683 endp = startp = endp + 1;
3690 GET_ENVIRONMENT (temp, LIBRARY_PATH_ENV);
3691 if (temp && *cross_compile == '0')
3693 const char *startp, *endp;
3694 char *nstore = (char *) alloca (strlen (temp) + 3);
3696 startp = endp = temp;
3699 if (*endp == PATH_SEPARATOR || *endp == 0)
3701 strncpy (nstore, startp, endp - startp);
3703 strcpy (nstore, concat (".", dir_separator_str, NULL));
3704 else if (!IS_DIR_SEPARATOR (endp[-1]))
3706 nstore[endp - startp] = DIR_SEPARATOR;
3707 nstore[endp - startp + 1] = 0;
3710 nstore[endp - startp] = 0;
3711 add_prefix (&startfile_prefixes, nstore, NULL,
3712 PREFIX_PRIORITY_LAST, 0, 1);
3715 endp = startp = endp + 1;
3722 /* Use LPATH like LIBRARY_PATH (for the CMU build program). */
3723 GET_ENVIRONMENT (temp, "LPATH");
3724 if (temp && *cross_compile == '0')
3726 const char *startp, *endp;
3727 char *nstore = (char *) alloca (strlen (temp) + 3);
3729 startp = endp = temp;
3732 if (*endp == PATH_SEPARATOR || *endp == 0)
3734 strncpy (nstore, startp, endp - startp);
3736 strcpy (nstore, concat (".", dir_separator_str, NULL));
3737 else if (!IS_DIR_SEPARATOR (endp[-1]))
3739 nstore[endp - startp] = DIR_SEPARATOR;
3740 nstore[endp - startp + 1] = 0;
3743 nstore[endp - startp] = 0;
3744 add_prefix (&startfile_prefixes, nstore, NULL,
3745 PREFIX_PRIORITY_LAST, 0, 1);
3748 endp = startp = endp + 1;
3755 /* Scan argv twice. Here, the first time, just count how many switches
3756 there will be in their vector, and how many input files in theirs.
3757 Here we also parse the switches that cc itself uses (e.g. -v). */
3759 for (i = 1; i < argc; i++)
3761 if (! strcmp (argv[i], "-dumpspecs"))
3763 struct spec_list *sl;
3765 for (sl = specs; sl; sl = sl->next)
3766 printf ("*%s:\n%s\n\n", sl->name, *(sl->ptr_spec));
3767 if (link_command_spec)
3768 printf ("*link_command:\n%s\n\n", link_command_spec);
3771 else if (! strcmp (argv[i], "-dumpversion"))
3773 printf ("%s\n", spec_version);
3776 else if (! strcmp (argv[i], "-dumpmachine"))
3778 printf ("%s\n", spec_machine);
3781 else if (strcmp (argv[i], "-fversion") == 0)
3783 /* translate_options () has turned --version into -fversion. */
3786 /* We will be passing a dummy file on to the sub-processes. */
3790 /* CPP driver cannot obtain switch from cc1_options. */
3792 add_preprocessor_option ("--version", strlen ("--version"));
3793 add_assembler_option ("--version", strlen ("--version"));
3794 add_linker_option ("--version", strlen ("--version"));
3796 else if (strcmp (argv[i], "-fhelp") == 0)
3798 /* translate_options () has turned --help into -fhelp. */
3799 print_help_list = 1;
3801 /* We will be passing a dummy file on to the sub-processes. */
3805 /* CPP driver cannot obtain switch from cc1_options. */
3807 add_preprocessor_option ("--help", 6);
3808 add_assembler_option ("--help", 6);
3809 add_linker_option ("--help", 6);
3811 else if (strncmp (argv[i], "-fhelp=", 7) == 0)
3813 /* translate_options () has turned --help into -fhelp. */
3814 print_subprocess_help = 2;
3816 /* We will be passing a dummy file on to the sub-processes. */
3820 else if (strcmp (argv[i], "-ftarget-help") == 0)
3822 /* translate_options() has turned --target-help into -ftarget-help. */
3823 print_subprocess_help = 1;
3825 /* We will be passing a dummy file on to the sub-processes. */
3829 /* CPP driver cannot obtain switch from cc1_options. */
3831 add_preprocessor_option ("--target-help", 13);
3832 add_assembler_option ("--target-help", 13);
3833 add_linker_option ("--target-help", 13);
3835 else if (! strcmp (argv[i], "-pass-exit-codes"))
3837 pass_exit_codes = 1;
3840 else if (! strcmp (argv[i], "-print-search-dirs"))
3841 print_search_dirs = 1;
3842 else if (! strcmp (argv[i], "-print-libgcc-file-name"))
3843 print_file_name = "libgcc.a";
3844 else if (! strncmp (argv[i], "-print-file-name=", 17))
3845 print_file_name = argv[i] + 17;
3846 else if (! strncmp (argv[i], "-print-prog-name=", 17))
3847 print_prog_name = argv[i] + 17;
3848 else if (! strcmp (argv[i], "-print-multi-lib"))
3849 print_multi_lib = 1;
3850 else if (! strcmp (argv[i], "-print-multi-directory"))
3851 print_multi_directory = 1;
3852 else if (! strcmp (argv[i], "-print-sysroot"))
3854 else if (! strcmp (argv[i], "-print-multi-os-directory"))
3855 print_multi_os_directory = 1;
3856 else if (! strcmp (argv[i], "-print-sysroot-headers-suffix"))
3857 print_sysroot_headers_suffix = 1;
3858 else if (! strcmp (argv[i], "-fcompare-debug-second"))
3860 compare_debug_second = 1;
3863 else if (! strcmp (argv[i], "-fno-compare-debug"))
3865 argv[i] = "-fcompare-debug=";
3866 goto compare_debug_with_arg;
3868 else if (! strcmp (argv[i], "-fcompare-debug"))
3870 argv[i] = "-fcompare-debug=-gtoggle";
3871 goto compare_debug_with_arg;
3873 #define OPT "-fcompare-debug="
3874 else if (! strncmp (argv[i], OPT, sizeof (OPT) - 1))
3877 compare_debug_with_arg:
3878 opt = argv[i] + sizeof (OPT) - 1;
3884 if (compare_debug < 0)
3885 compare_debug_opt = NULL;
3887 compare_debug_opt = opt;
3890 else if (! strncmp (argv[i], "-Wa,", 4))
3893 /* Pass the rest of this option to the assembler. */
3895 /* Split the argument at commas. */
3897 for (j = 4; argv[i][j]; j++)
3898 if (argv[i][j] == ',')
3900 add_assembler_option (argv[i] + prev, j - prev);
3904 /* Record the part after the last comma. */
3905 add_assembler_option (argv[i] + prev, j - prev);
3907 else if (! strncmp (argv[i], "-Wp,", 4))
3910 /* Pass the rest of this option to the preprocessor. */
3912 /* Split the argument at commas. */
3914 for (j = 4; argv[i][j]; j++)
3915 if (argv[i][j] == ',')
3917 add_preprocessor_option (argv[i] + prev, j - prev);
3921 /* Record the part after the last comma. */
3922 add_preprocessor_option (argv[i] + prev, j - prev);
3924 else if (argv[i][0] == '+' && argv[i][1] == 'e')
3925 /* The +e options to the C++ front-end. */
3927 else if (strncmp (argv[i], "-Wl,", 4) == 0)
3930 /* Split the argument at commas. */
3931 for (j = 3; argv[i][j]; j++)
3932 n_infiles += (argv[i][j] == ',');
3934 else if (strcmp (argv[i], "-Xlinker") == 0)
3937 fatal ("argument to '-Xlinker' is missing");
3942 else if (strcmp (argv[i], "-Xpreprocessor") == 0)
3945 fatal ("argument to '-Xpreprocessor' is missing");
3947 add_preprocessor_option (argv[i+1], strlen (argv[i+1]));
3949 else if (strcmp (argv[i], "-Xassembler") == 0)
3952 fatal ("argument to '-Xassembler' is missing");
3954 add_assembler_option (argv[i+1], strlen (argv[i+1]));
3956 else if (strcmp (argv[i], "-l") == 0)
3959 fatal ("argument to '-l' is missing");
3964 else if (strncmp (argv[i], "-l", 2) == 0)
3966 else if (strcmp (argv[i], "-save-temps") == 0)
3968 save_temps_flag = SAVE_TEMPS_CWD;
3971 else if (strncmp (argv[i], "-save-temps=", 12) == 0)
3974 if (strcmp (argv[i]+12, "cwd") == 0)
3975 save_temps_flag = SAVE_TEMPS_CWD;
3976 else if (strcmp (argv[i]+12, "obj") == 0
3977 || strcmp (argv[i]+12, "object") == 0)
3978 save_temps_flag = SAVE_TEMPS_OBJ;
3980 fatal ("'%s' is an unknown -save-temps option", argv[i]);
3982 else if (strcmp (argv[i], "-no-canonical-prefixes") == 0)
3983 /* Already handled as a special case, so ignored here. */
3985 else if (strcmp (argv[i], "-combine") == 0)
3990 else if (strcmp (argv[i], "-specs") == 0)
3992 struct user_specs *user = XNEW (struct user_specs);
3994 fatal ("argument to '-specs' is missing");
3996 user->next = (struct user_specs *) 0;
3997 user->filename = argv[i];
3998 if (user_specs_tail)
3999 user_specs_tail->next = user;
4001 user_specs_head = user;
4002 user_specs_tail = user;
4004 else if (strncmp (argv[i], "-specs=", 7) == 0)
4006 struct user_specs *user = XNEW (struct user_specs);
4007 if (strlen (argv[i]) == 7)
4008 fatal ("argument to '-specs=' is missing");
4010 user->next = (struct user_specs *) 0;
4011 user->filename = argv[i] + 7;
4012 if (user_specs_tail)
4013 user_specs_tail->next = user;
4015 user_specs_head = user;
4016 user_specs_tail = user;
4018 else if (strcmp (argv[i], "-time") == 0)
4020 else if (strncmp (argv[i], "-time=", sizeof ("-time=") - 1) == 0)
4022 if (report_times_to_file)
4023 fclose (report_times_to_file);
4024 report_times_to_file = fopen (argv[i] + sizeof ("-time=") - 1, "a");
4026 else if (strcmp (argv[i], "-pipe") == 0)
4028 /* -pipe has to go into the switches array as well as
4033 else if (strcmp (argv[i], "-wrapper") == 0)
4036 fatal ("argument to '-wrapper' is missing");
4038 wrapper_string = argv[i];
4042 else if (strcmp (argv[i], "-###") == 0)
4044 /* This is similar to -v except that there is no execution
4045 of the commands and the echoed arguments are quoted. It
4046 is intended for use in shell scripts to capture the
4047 driver-generated command line. */
4048 verbose_only_flag++;
4051 else if (argv[i][0] == '-' && argv[i][1] != 0)
4053 const char *p = &argv[i][1];
4059 if (p[1] && NULL == strchr (argv[i] + 2, '-'))
4064 fatal ("'-%c' must come at the start of the command line", c);
4072 if (p[1] == 0 && i + 1 == argc)
4073 fatal ("argument to '-B' is missing");
4079 len = strlen (value);
4081 /* Catch the case where the user has forgotten to append a
4082 directory separator to the path. Note, they may be using
4083 -B to add an executable name prefix, eg "i386-elf-", in
4084 order to distinguish between multiple installations of
4085 GCC in the same directory. Hence we must check to see
4086 if appending a directory separator actually makes a
4087 valid directory name. */
4088 if (! IS_DIR_SEPARATOR (value [len - 1])
4089 && is_directory (value, false))
4091 char *tmp = XNEWVEC (char, len + 2);
4092 strcpy (tmp, value);
4093 tmp[len] = DIR_SEPARATOR;
4098 add_prefix (&exec_prefixes, value, NULL,
4099 PREFIX_PRIORITY_B_OPT, 0, 0);
4100 add_prefix (&startfile_prefixes, value, NULL,
4101 PREFIX_PRIORITY_B_OPT, 0, 0);
4102 add_prefix (&include_prefixes, value, NULL,
4103 PREFIX_PRIORITY_B_OPT, 0, 0);
4108 case 'v': /* Print our subcommands and print versions. */
4110 /* If they do anything other than exactly `-v', don't set
4111 verbose_flag; rather, continue on to give the error. */
4129 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
4134 /* Forward scan, just in case -S or -c is specified
4141 if (argv[j][0] == '-')
4143 if (SWITCH_CURTAILS_COMPILATION (argv[j][1])
4149 else if ((skip = SWITCH_TAKES_ARG (argv[j][1])))
4150 j += skip - (argv[j][2] != 0);
4151 else if ((skip = WORD_SWITCH_TAKES_ARG (argv[j] + 1)))
4158 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX) || defined(HAVE_TARGET_OBJECT_SUFFIX)
4160 argv[i + 1] = convert_filename (argv[i + 1], ! have_c, 0);
4162 argv[i] = convert_filename (argv[i], ! have_c, 0);
4164 /* Save the output name in case -save-temps=obj was used. */
4165 save_temps_prefix = xstrdup ((p[1] == 0) ? argv[i + 1] : argv[i] + 1);
4171 #ifdef MODIFY_TARGET_NAME
4172 is_modify_target_name = 0;
4174 for (j = 0; j < ARRAY_SIZE (modify_target); j++)
4175 if (! strcmp (argv[i], modify_target[j].sw))
4177 char *new_name = XNEWVEC (char, strlen (modify_target[j].str)
4178 + strlen (spec_machine));
4181 int made_addition = 0;
4183 is_modify_target_name = 1;
4184 for (p = spec_machine, q = new_name; *p != 0; )
4186 if (modify_target[j].add_del == DELETE
4187 && (! strncmp (q, modify_target[j].str,
4188 strlen (modify_target[j].str))))
4189 p += strlen (modify_target[j].str);
4190 else if (modify_target[j].add_del == ADD
4191 && ! made_addition && *p == '-')
4193 for (r = modify_target[j].str; *r != 0; )
4201 spec_machine = new_name;
4204 if (is_modify_target_name)
4210 if (SWITCH_TAKES_ARG (c) > (p[1] != 0))
4211 i += SWITCH_TAKES_ARG (c) - (p[1] != 0);
4212 else if (WORD_SWITCH_TAKES_ARG (p))
4213 i += WORD_SWITCH_TAKES_ARG (p);
4223 /* If -save-temps=obj and -o name, create the prefix to use for %b.
4224 Otherwise just make -save-temps=obj the same as -save-temps=cwd. */
4225 if (save_temps_flag == SAVE_TEMPS_OBJ && save_temps_prefix != NULL)
4227 save_temps_length = strlen (save_temps_prefix);
4228 temp = strrchr (lbasename (save_temps_prefix), '.');
4231 save_temps_length -= strlen (temp);
4232 save_temps_prefix[save_temps_length] = '\0';
4236 else if (save_temps_prefix != NULL)
4238 free (save_temps_prefix);
4239 save_temps_prefix = NULL;
4242 if (save_temps_flag && use_pipes)
4244 /* -save-temps overrides -pipe, so that temp files are produced */
4245 if (save_temps_flag)
4246 error ("warning: -pipe ignored because -save-temps specified");
4252 const char *gcd = getenv ("GCC_COMPARE_DEBUG");
4254 if (gcd && gcd[0] == '-')
4257 compare_debug_opt = gcd;
4260 else if (gcd && *gcd && strcmp (gcd, "0"))
4263 compare_debug_opt = "-gtoggle";
4267 else if (compare_debug < 0)
4270 gcc_assert (!compare_debug_opt);
4273 /* Set up the search paths. We add directories that we expect to
4274 contain GNU Toolchain components before directories specified by
4275 the machine description so that we will find GNU components (like
4276 the GNU assembler) before those of the host system. */
4278 /* If we don't know where the toolchain has been installed, use the
4279 configured-in locations. */
4280 if (!gcc_exec_prefix)
4283 add_prefix (&exec_prefixes, standard_libexec_prefix, "GCC",
4284 PREFIX_PRIORITY_LAST, 1, 0);
4285 add_prefix (&exec_prefixes, standard_libexec_prefix, "BINUTILS",
4286 PREFIX_PRIORITY_LAST, 2, 0);
4287 add_prefix (&exec_prefixes, standard_exec_prefix, "BINUTILS",
4288 PREFIX_PRIORITY_LAST, 2, 0);
4290 add_prefix (&startfile_prefixes, standard_exec_prefix, "BINUTILS",
4291 PREFIX_PRIORITY_LAST, 1, 0);
4294 gcc_assert (!IS_ABSOLUTE_PATH (tooldir_base_prefix));
4295 tooldir_prefix = concat (tooldir_base_prefix, spec_machine,
4296 dir_separator_str, NULL);
4298 /* Look for tools relative to the location from which the driver is
4299 running, or, if that is not available, the configured prefix. */
4301 = concat (gcc_exec_prefix ? gcc_exec_prefix : standard_exec_prefix,
4302 spec_machine, dir_separator_str,
4303 spec_version, dir_separator_str, tooldir_prefix, NULL);
4305 add_prefix (&exec_prefixes,
4306 concat (tooldir_prefix, "bin", dir_separator_str, NULL),
4307 "BINUTILS", PREFIX_PRIORITY_LAST, 0, 0);
4308 add_prefix (&startfile_prefixes,
4309 concat (tooldir_prefix, "lib", dir_separator_str, NULL),
4310 "BINUTILS", PREFIX_PRIORITY_LAST, 0, 1);
4312 #if defined(TARGET_SYSTEM_ROOT_RELOCATABLE) && !defined(VMS)
4313 /* If the normal TARGET_SYSTEM_ROOT is inside of $exec_prefix,
4314 then consider it to relocate with the rest of the GCC installation
4315 if GCC_EXEC_PREFIX is set.
4316 ``make_relative_prefix'' is not compiled for VMS, so don't call it. */
4317 if (target_system_root && gcc_exec_prefix)
4319 char *tmp_prefix = get_relative_prefix (argv[0],
4320 standard_bindir_prefix,
4321 target_system_root);
4322 if (tmp_prefix && access_check (tmp_prefix, F_OK) == 0)
4324 target_system_root = tmp_prefix;
4325 target_system_root_changed = 1;
4330 /* More prefixes are enabled in main, after we read the specs file
4331 and determine whether this is cross-compilation or not. */
4333 /* Then create the space for the vectors and scan again. */
4335 switches = XNEWVEC (struct switchstr, n_switches + 1);
4336 infiles = XNEWVEC (struct infile, n_infiles + 1);
4339 last_language_n_infiles = -1;
4341 /* This, time, copy the text of each switch and store a pointer
4342 to the copy in the vector of switches.
4343 Store all the infiles in their vector. */
4345 for (i = 1; i < argc; i++)
4347 /* Just skip the switches that were handled by the preceding loop. */
4348 #ifdef MODIFY_TARGET_NAME
4349 is_modify_target_name = 0;
4351 for (j = 0; j < ARRAY_SIZE (modify_target); j++)
4352 if (! strcmp (argv[i], modify_target[j].sw))
4353 is_modify_target_name = 1;
4355 if (is_modify_target_name)
4359 if (! strncmp (argv[i], "-Wa,", 4))
4361 else if (! strncmp (argv[i], "-Wp,", 4))
4363 else if (! strcmp (argv[i], "-no-canonical-prefixes"))
4365 else if (! strcmp (argv[i], "-pass-exit-codes"))
4367 else if (! strcmp (argv[i], "-print-search-dirs"))
4369 else if (! strcmp (argv[i], "-print-libgcc-file-name"))
4371 else if (! strncmp (argv[i], "-print-file-name=", 17))
4373 else if (! strncmp (argv[i], "-print-prog-name=", 17))
4375 else if (! strcmp (argv[i], "-print-multi-lib"))
4377 else if (! strcmp (argv[i], "-print-multi-directory"))
4379 else if (! strcmp (argv[i], "-print-sysroot"))
4381 else if (! strcmp (argv[i], "-print-multi-os-directory"))
4383 else if (! strcmp (argv[i], "-print-sysroot-headers-suffix"))
4385 else if (! strncmp (argv[i], "--sysroot=", strlen ("--sysroot=")))
4387 target_system_root = argv[i] + strlen ("--sysroot=");
4388 target_system_root_changed = 1;
4390 else if (argv[i][0] == '+' && argv[i][1] == 'e')
4392 /* Compensate for the +e options to the C++ front-end;
4393 they're there simply for cfront call-compatibility. We do
4394 some magic in default_compilers to pass them down properly.
4395 Note we deliberately start at the `+' here, to avoid passing
4396 -e0 or -e1 down into the linker. */
4397 switches[n_switches].part1 = &argv[i][0];
4398 switches[n_switches].args = 0;
4399 switches[n_switches].live_cond = 0;
4400 switches[n_switches].validated = 0;
4403 else if (strncmp (argv[i], "-Wl,", 4) == 0)
4406 /* Split the argument at commas. */
4408 for (j = 4; argv[i][j]; j++)
4409 if (argv[i][j] == ',')
4411 infiles[n_infiles].language = "*";
4412 infiles[n_infiles++].name
4413 = save_string (argv[i] + prev, j - prev);
4416 /* Record the part after the last comma. */
4417 infiles[n_infiles].language = "*";
4418 infiles[n_infiles++].name = argv[i] + prev;
4420 else if (strcmp (argv[i], "-Xlinker") == 0)
4422 infiles[n_infiles].language = "*";
4423 infiles[n_infiles++].name = argv[++i];
4425 /* Xassembler and Xpreprocessor were already handled in the first argv
4426 scan, so all we need to do here is ignore them and their argument. */
4427 else if (strcmp (argv[i], "-Xassembler") == 0)
4429 else if (strcmp (argv[i], "-Xpreprocessor") == 0)
4431 else if (strcmp (argv[i], "-l") == 0)
4432 { /* POSIX allows separation of -l and the lib arg;
4433 canonicalize by concatenating -l with its arg */
4434 infiles[n_infiles].language = "*";
4435 infiles[n_infiles++].name = concat ("-l", argv[++i], NULL);
4437 else if (strncmp (argv[i], "-l", 2) == 0)
4439 infiles[n_infiles].language = "*";
4440 infiles[n_infiles++].name = argv[i];
4442 else if (strcmp (argv[i], "-wrapper") == 0)
4444 else if (strcmp (argv[i], "-specs") == 0)
4446 else if (strncmp (argv[i], "-specs=", 7) == 0)
4448 else if (strcmp (argv[i], "-time") == 0)
4450 else if (strncmp (argv[i], "-time=", sizeof ("-time=") - 1) == 0)
4452 else if (strcmp (argv[i], "-###") == 0)
4454 else if (argv[i][0] == '-' && argv[i][1] != 0)
4456 const char *p = &argv[i][1];
4461 if (p[1] == 0 && i + 1 == argc)
4462 fatal ("argument to '-x' is missing");
4464 spec_lang = argv[++i];
4467 if (! strcmp (spec_lang, "none"))
4468 /* Suppress the warning if -xnone comes after the last input
4469 file, because alternate command interfaces like g++ might
4470 find it useful to place -xnone after each input file. */
4473 last_language_n_infiles = n_infiles;
4476 switches[n_switches].part1 = p;
4477 /* Deal with option arguments in separate argv elements. */
4478 if ((SWITCH_TAKES_ARG (c) > (p[1] != 0))
4479 || WORD_SWITCH_TAKES_ARG (p))
4482 int n_args = WORD_SWITCH_TAKES_ARG (p);
4486 /* Count only the option arguments in separate argv elements. */
4487 n_args = SWITCH_TAKES_ARG (c) - (p[1] != 0);
4489 if (i + n_args >= argc)
4490 fatal ("argument to '-%s' is missing", p);
4491 switches[n_switches].args
4492 = XNEWVEC (const char *, n_args + 1);
4494 switches[n_switches].args[j++] = argv[++i];
4495 /* Null-terminate the vector. */
4496 switches[n_switches].args[j] = 0;
4498 else if (strchr (switches_need_spaces, c))
4500 /* On some systems, ld cannot handle some options without
4501 a space. So split the option from its argument. */
4502 char *part1 = XNEWVEC (char, 2);
4506 switches[n_switches].part1 = part1;
4507 switches[n_switches].args = XNEWVEC (const char *, 2);
4508 switches[n_switches].args[0] = xstrdup (p+1);
4509 switches[n_switches].args[1] = 0;
4512 switches[n_switches].args = 0;
4514 switches[n_switches].live_cond = 0;
4515 switches[n_switches].validated = 0;
4516 switches[n_switches].ordering = 0;
4517 /* These are always valid, since gcc.c itself understands the
4518 first four and gfortranspec.c understands -static-libgfortran. */
4519 if (!strcmp (p, "save-temps")
4520 || !strcmp (p, "static-libgcc")
4521 || !strcmp (p, "shared-libgcc")
4522 || !strcmp (p, "pipe")
4523 || !strcmp (p, "static-libgfortran"))
4524 switches[n_switches].validated = 1;
4527 char ch = switches[n_switches].part1[0];
4529 switches[n_switches].validated = 1;
4535 #ifdef HAVE_TARGET_OBJECT_SUFFIX
4536 argv[i] = convert_filename (argv[i], 0, access (argv[i], F_OK));
4539 if (strcmp (argv[i], "-") != 0 && access (argv[i], F_OK) < 0)
4541 perror_with_name (argv[i]);
4546 infiles[n_infiles].language = spec_lang;
4547 infiles[n_infiles++].name = argv[i];
4552 if (n_infiles == last_language_n_infiles && spec_lang != 0)
4553 error ("warning: '-x %s' after last input file has no effect", spec_lang);
4555 if (compare_debug == 2 || compare_debug == 3)
4557 switches[n_switches].part1 = concat ("fcompare-debug=",
4560 switches[n_switches].args = 0;
4561 switches[n_switches].live_cond = 0;
4562 switches[n_switches].validated = 0;
4563 switches[n_switches].ordering = 0;
4568 /* Ensure we only invoke each subprocess once. */
4569 if (print_subprocess_help || print_help_list || print_version)
4573 /* Create a dummy input file, so that we can pass
4574 the help option on to the various sub-processes. */
4575 infiles[0].language = "c";
4576 infiles[0].name = "help-dummy";
4579 switches[n_switches].part1 = 0;
4580 infiles[n_infiles].name = 0;
4583 /* Store switches not filtered out by %<S in spec in COLLECT_GCC_OPTIONS
4584 and place that in the environment. */
4587 set_collect_gcc_options (void)
4592 /* Build COLLECT_GCC_OPTIONS to have all of the options specified to
4594 obstack_grow (&collect_obstack, "COLLECT_GCC_OPTIONS=",
4595 sizeof ("COLLECT_GCC_OPTIONS=") - 1);
4598 for (i = 0; (int) i < n_switches; i++)
4600 const char *const *args;
4603 obstack_grow (&collect_obstack, " ", 1);
4607 /* Ignore elided switches. */
4608 if ((switches[i].live_cond & SWITCH_IGNORE) != 0)
4611 /* Don't use -fwhole-program when compiling the init and fini routines,
4612 since we'd wrongly assume that the routines aren't needed. */
4613 if (strcmp (switches[i].part1, "fwhole-program") == 0)
4616 obstack_grow (&collect_obstack, "'-", 2);
4617 q = switches[i].part1;
4618 while ((p = strchr (q, '\'')))
4620 obstack_grow (&collect_obstack, q, p - q);
4621 obstack_grow (&collect_obstack, "'\\''", 4);
4624 obstack_grow (&collect_obstack, q, strlen (q));
4625 obstack_grow (&collect_obstack, "'", 1);
4627 for (args = switches[i].args; args && *args; args++)
4629 obstack_grow (&collect_obstack, " '", 2);
4631 while ((p = strchr (q, '\'')))
4633 obstack_grow (&collect_obstack, q, p - q);
4634 obstack_grow (&collect_obstack, "'\\''", 4);
4637 obstack_grow (&collect_obstack, q, strlen (q));
4638 obstack_grow (&collect_obstack, "'", 1);
4641 obstack_grow (&collect_obstack, "\0", 1);
4642 xputenv (XOBFINISH (&collect_obstack, char *));
4645 /* Process a spec string, accumulating and running commands. */
4647 /* These variables describe the input file name.
4648 input_file_number is the index on outfiles of this file,
4649 so that the output file name can be stored for later use by %o.
4650 input_basename is the start of the part of the input file
4651 sans all directory names, and basename_length is the number
4652 of characters starting there excluding the suffix .c or whatever. */
4654 static const char *input_filename;
4655 static int input_file_number;
4656 size_t input_filename_length;
4657 static int basename_length;
4658 static int suffixed_basename_length;
4659 static const char *input_basename;
4660 static const char *input_suffix;
4661 #ifndef HOST_LACKS_INODE_NUMBERS
4662 static struct stat input_stat;
4664 static int input_stat_set;
4666 /* The compiler used to process the current input file. */
4667 static struct compiler *input_file_compiler;
4669 /* These are variables used within do_spec and do_spec_1. */
4671 /* Nonzero if an arg has been started and not yet terminated
4672 (with space, tab or newline). */
4673 static int arg_going;
4675 /* Nonzero means %d or %g has been seen; the next arg to be terminated
4676 is a temporary file name. */
4677 static int delete_this_arg;
4679 /* Nonzero means %w has been seen; the next arg to be terminated
4680 is the output file name of this compilation. */
4681 static int this_is_output_file;
4683 /* Nonzero means %s has been seen; the next arg to be terminated
4684 is the name of a library file and we should try the standard
4685 search dirs for it. */
4686 static int this_is_library_file;
4688 /* Nonzero means %T has been seen; the next arg to be terminated
4689 is the name of a linker script and we should try all of the
4690 standard search dirs for it. If it is found insert a --script
4691 command line switch and then substitute the full path in place,
4692 otherwise generate an error message. */
4693 static int this_is_linker_script;
4695 /* Nonzero means that the input of this command is coming from a pipe. */
4696 static int input_from_pipe;
4698 /* Nonnull means substitute this for any suffix when outputting a switches
4700 static const char *suffix_subst;
4702 /* If there is an argument being accumulated, terminate it and store it. */
4705 end_going_arg (void)
4711 obstack_1grow (&obstack, 0);
4712 string = XOBFINISH (&obstack, const char *);
4713 if (this_is_library_file)
4714 string = find_file (string);
4715 if (this_is_linker_script)
4717 char * full_script_path = find_a_file (&startfile_prefixes, string, R_OK, true);
4719 if (full_script_path == NULL)
4721 error (_("unable to locate default linker script '%s' in the library search paths"), string);
4722 /* Script was not found on search path. */
4725 store_arg ("--script", false, false);
4726 string = full_script_path;
4728 store_arg (string, delete_this_arg, this_is_output_file);
4729 if (this_is_output_file)
4730 outfiles[input_file_number] = string;
4736 /* Parse the WRAPPER string which is a comma separated list of the command line
4737 and insert them into the beginning of argbuf. */
4740 insert_wrapper (const char *wrapper)
4744 char *buf = xstrdup (wrapper);
4753 while ((p = strchr (p, ',')) != NULL);
4755 if (argbuf_index + n >= argbuf_length)
4757 argbuf_length = argbuf_length * 2;
4758 while (argbuf_length < argbuf_index + n)
4760 argbuf = XRESIZEVEC (const char *, argbuf, argbuf_length);
4762 for (i = argbuf_index - 1; i >= 0; i--)
4763 argbuf[i + n] = argbuf[i];
4776 while ((p = strchr (p, ',')) != NULL);
4777 gcc_assert (i == n);
4781 /* Process the spec SPEC and run the commands specified therein.
4782 Returns 0 if the spec is successfully processed; -1 if failed. */
4785 do_spec (const char *spec)
4789 value = do_spec_2 (spec);
4791 /* Force out any unfinished command.
4792 If -pipe, this forces out the last command if it ended in `|'. */
4795 if (argbuf_index > 0 && !strcmp (argbuf[argbuf_index - 1], "|"))
4798 set_collect_gcc_options ();
4800 if (argbuf_index > 0)
4808 do_spec_2 (const char *spec)
4814 delete_this_arg = 0;
4815 this_is_output_file = 0;
4816 this_is_library_file = 0;
4817 this_is_linker_script = 0;
4818 input_from_pipe = 0;
4819 suffix_subst = NULL;
4821 result = do_spec_1 (spec, 0, NULL);
4829 /* Process the given spec string and add any new options to the end
4830 of the switches/n_switches array. */
4833 do_option_spec (const char *name, const char *spec)
4835 unsigned int i, value_count, value_len;
4836 const char *p, *q, *value;
4837 char *tmp_spec, *tmp_spec_p;
4839 if (configure_default_options[0].name == NULL)
4842 for (i = 0; i < ARRAY_SIZE (configure_default_options); i++)
4843 if (strcmp (configure_default_options[i].name, name) == 0)
4845 if (i == ARRAY_SIZE (configure_default_options))
4848 value = configure_default_options[i].value;
4849 value_len = strlen (value);
4851 /* Compute the size of the final spec. */
4854 while ((p = strstr (p, "%(VALUE)")) != NULL)
4860 /* Replace each %(VALUE) by the specified value. */
4861 tmp_spec = (char *) alloca (strlen (spec) + 1
4862 + value_count * (value_len - strlen ("%(VALUE)")));
4863 tmp_spec_p = tmp_spec;
4865 while ((p = strstr (q, "%(VALUE)")) != NULL)
4867 memcpy (tmp_spec_p, q, p - q);
4868 tmp_spec_p = tmp_spec_p + (p - q);
4869 memcpy (tmp_spec_p, value, value_len);
4870 tmp_spec_p += value_len;
4871 q = p + strlen ("%(VALUE)");
4873 strcpy (tmp_spec_p, q);
4875 do_self_spec (tmp_spec);
4878 /* Process the given spec string and add any new options to the end
4879 of the switches/n_switches array. */
4882 do_self_spec (const char *spec)
4885 do_spec_1 (" ", 0, NULL);
4887 if (argbuf_index > 0)
4891 switches = XRESIZEVEC (struct switchstr, switches,
4892 n_switches + argbuf_index + 1);
4894 for (i = 0; i < argbuf_index; i++)
4896 struct switchstr *sw;
4897 const char *p = argbuf[i];
4900 /* Each switch should start with '-'. */
4902 fatal ("switch '%s' does not start with '-'", argbuf[i]);
4907 sw = &switches[n_switches++];
4913 /* Deal with option arguments in separate argv elements. */
4914 if ((SWITCH_TAKES_ARG (c) > (p[1] != 0))
4915 || WORD_SWITCH_TAKES_ARG (p))
4918 int n_args = WORD_SWITCH_TAKES_ARG (p);
4922 /* Count only the option arguments in separate argv elements. */
4923 n_args = SWITCH_TAKES_ARG (c) - (p[1] != 0);
4925 if (i + n_args >= argbuf_index)
4926 fatal ("argument to '-%s' is missing", p);
4928 = XNEWVEC (const char *, n_args + 1);
4930 sw->args[j++] = argbuf[++i];
4931 /* Null-terminate the vector. */
4934 else if (strchr (switches_need_spaces, c))
4936 /* On some systems, ld cannot handle some options without
4937 a space. So split the option from its argument. */
4938 char *part1 = XNEWVEC (char, 2);
4943 sw->args = XNEWVEC (const char *, 2);
4944 sw->args[0] = xstrdup (p+1);
4951 switches[n_switches].part1 = 0;
4955 /* Callback for processing %D and %I specs. */
4957 struct spec_path_info {
4962 bool separate_options;
4966 spec_path (char *path, void *data)
4968 struct spec_path_info *info = (struct spec_path_info *) data;
4972 if (info->omit_relative && !IS_ABSOLUTE_PATH (path))
4975 if (info->append_len != 0)
4977 len = strlen (path);
4978 memcpy (path + len, info->append, info->append_len + 1);
4981 if (!is_directory (path, true))
4984 do_spec_1 (info->option, 1, NULL);
4985 if (info->separate_options)
4986 do_spec_1 (" ", 0, NULL);
4988 if (info->append_len == 0)
4990 len = strlen (path);
4991 save = path[len - 1];
4992 if (IS_DIR_SEPARATOR (path[len - 1]))
4993 path[len - 1] = '\0';
4996 do_spec_1 (path, 1, NULL);
4997 do_spec_1 (" ", 0, NULL);
4999 /* Must not damage the original path. */
5000 if (info->append_len == 0)
5001 path[len - 1] = save;
5006 /* Create a temporary FILE with the contents of ARGV. Add @FILE to the
5010 create_at_file (char **argv)
5012 char *temp_file = make_temp_file ("");
5013 char *at_argument = concat ("@", temp_file, NULL);
5014 FILE *f = fopen (temp_file, "w");
5018 fatal ("could not open temporary response file %s",
5021 status = writeargv (argv, f);
5024 fatal ("could not write to temporary response file %s",
5027 status = fclose (f);
5030 fatal ("could not close temporary response file %s",
5033 store_arg (at_argument, 0, 0);
5035 record_temp_file (temp_file, !save_temps_flag, !save_temps_flag);
5038 /* True if we should compile INFILE. */
5041 compile_input_file_p (struct infile *infile)
5043 if ((!infile->language) || (infile->language[0] != '*'))
5044 if (infile->incompiler == input_file_compiler)
5049 /* Process the sub-spec SPEC as a portion of a larger spec.
5050 This is like processing a whole spec except that we do
5051 not initialize at the beginning and we do not supply a
5052 newline by default at the end.
5053 INSWITCH nonzero means don't process %-sequences in SPEC;
5054 in this case, % is treated as an ordinary character.
5055 This is used while substituting switches.
5056 INSWITCH nonzero also causes SPC not to terminate an argument.
5058 Value is zero unless a line was finished
5059 and the command on that line reported an error. */
5062 do_spec_1 (const char *spec, int inswitch, const char *soft_matched_part)
5064 const char *p = spec;
5070 /* If substituting a switch, treat all chars like letters.
5071 Otherwise, NL, SPC, TAB and % are special. */
5072 switch (inswitch ? 'a' : c)
5077 if (argbuf_index > 0 && !strcmp (argbuf[argbuf_index - 1], "|"))
5079 /* A `|' before the newline means use a pipe here,
5080 but only if -pipe was specified.
5081 Otherwise, execute now and don't pass the `|' as an arg. */
5084 input_from_pipe = 1;
5091 set_collect_gcc_options ();
5093 if (argbuf_index > 0)
5099 /* Reinitialize for a new command, and for a new argument. */
5102 delete_this_arg = 0;
5103 this_is_output_file = 0;
5104 this_is_library_file = 0;
5105 this_is_linker_script = 0;
5106 input_from_pipe = 0;
5113 obstack_1grow (&obstack, c);
5121 /* Reinitialize for a new argument. */
5122 delete_this_arg = 0;
5123 this_is_output_file = 0;
5124 this_is_library_file = 0;
5125 this_is_linker_script = 0;
5132 fatal ("spec '%s' invalid", spec);
5135 if (save_temps_length)
5136 obstack_grow (&obstack, save_temps_prefix, save_temps_length);
5138 obstack_grow (&obstack, input_basename, basename_length);
5139 if (compare_debug < 0)
5140 obstack_grow (&obstack, ".gk", 3);
5145 if (save_temps_length)
5146 obstack_grow (&obstack, save_temps_prefix, save_temps_length);
5148 obstack_grow (&obstack, input_basename, suffixed_basename_length);
5149 if (compare_debug < 0)
5150 obstack_grow (&obstack, ".gk", 3);
5155 delete_this_arg = 2;
5158 /* Dump out the directories specified with LIBRARY_PATH,
5159 followed by the absolute directories
5160 that we search for startfiles. */
5163 struct spec_path_info info;
5166 info.append_len = 0;
5167 #ifdef RELATIVE_PREFIX_NOT_LINKDIR
5168 /* Used on systems which record the specified -L dirs
5169 and use them to search for dynamic linking.
5170 Relative directories always come from -B,
5171 and it is better not to use them for searching
5172 at run time. In particular, stage1 loses. */
5173 info.omit_relative = true;
5175 info.omit_relative = false;
5177 info.separate_options = false;
5179 for_each_path (&startfile_prefixes, true, 0, spec_path, &info);
5184 /* %efoo means report an error with `foo' as error message
5185 and don't execute any more commands for this file. */
5189 while (*p != 0 && *p != '\n')
5191 buf = (char *) alloca (p - q + 1);
5192 strncpy (buf, q, p - q);
5199 /* %nfoo means report a notice with `foo' on stderr. */
5203 while (*p != 0 && *p != '\n')
5205 buf = (char *) alloca (p - q + 1);
5206 strncpy (buf, q, p - q);
5208 notice ("%s\n", buf);
5218 /* If save_temps_flag is off, and the HOST_BIT_BUCKET is
5219 defined, and it is not a directory, and it is
5220 writable, use it. Otherwise, treat this like any
5221 other temporary file. */
5223 if ((!save_temps_flag)
5224 && (stat (HOST_BIT_BUCKET, &st) == 0) && (!S_ISDIR (st.st_mode))
5225 && (access (HOST_BIT_BUCKET, W_OK) == 0))
5227 obstack_grow (&obstack, HOST_BIT_BUCKET,
5228 strlen (HOST_BIT_BUCKET));
5229 delete_this_arg = 0;
5234 goto create_temp_file;
5238 obstack_1grow (&obstack, '-');
5239 delete_this_arg = 0;
5242 /* consume suffix */
5243 while (*p == '.' || ISALNUM ((unsigned char) *p))
5245 if (p[0] == '%' && p[1] == 'O')
5250 goto create_temp_file;
5254 /* consume suffix */
5255 while (*p == '.' || ISALNUM ((unsigned char) *p))
5257 if (p[0] == '%' && p[1] == 'O')
5262 goto create_temp_file;
5268 struct temp_name *t;
5270 const char *suffix = p;
5271 char *saved_suffix = NULL;
5273 while (*p == '.' || ISALNUM ((unsigned char) *p))
5275 suffix_length = p - suffix;
5276 if (p[0] == '%' && p[1] == 'O')
5279 /* We don't support extra suffix characters after %O. */
5280 if (*p == '.' || ISALNUM ((unsigned char) *p))
5281 fatal ("spec '%s' has invalid '%%0%c'", spec, *p);
5282 if (suffix_length == 0)
5283 suffix = TARGET_OBJECT_SUFFIX;
5287 = XNEWVEC (char, suffix_length
5288 + strlen (TARGET_OBJECT_SUFFIX));
5289 strncpy (saved_suffix, suffix, suffix_length);
5290 strcpy (saved_suffix + suffix_length,
5291 TARGET_OBJECT_SUFFIX);
5293 suffix_length += strlen (TARGET_OBJECT_SUFFIX);
5296 if (compare_debug < 0)
5298 suffix = concat (".gk", suffix, NULL);
5302 /* If -save-temps=obj and -o were specified, use that for the
5304 if (save_temps_length)
5307 temp_filename_length
5308 = save_temps_length + suffix_length + 1;
5309 tmp = (char *) alloca (temp_filename_length);
5310 memcpy (tmp, save_temps_prefix, save_temps_length);
5311 memcpy (tmp + save_temps_length, suffix, suffix_length);
5312 tmp[save_temps_length + suffix_length] = '\0';
5313 temp_filename = save_string (tmp,
5314 temp_filename_length + 1);
5315 obstack_grow (&obstack, temp_filename,
5316 temp_filename_length);
5318 delete_this_arg = 0;
5322 /* If the input_filename has the same suffix specified
5323 for the %g, %u, or %U, and -save-temps is specified,
5324 we could end up using that file as an intermediate
5325 thus clobbering the user's source file (.e.g.,
5326 gcc -save-temps foo.s would clobber foo.s with the
5327 output of cpp0). So check for this condition and
5328 generate a temp file as the intermediate. */
5330 if (save_temps_flag)
5333 temp_filename_length = basename_length + suffix_length + 1;
5334 tmp = (char *) alloca (temp_filename_length);
5335 memcpy (tmp, input_basename, basename_length);
5336 memcpy (tmp + basename_length, suffix, suffix_length);
5337 tmp[basename_length + suffix_length] = '\0';
5338 temp_filename = tmp;
5340 if (strcmp (temp_filename, input_filename) != 0)
5342 #ifndef HOST_LACKS_INODE_NUMBERS
5343 struct stat st_temp;
5345 /* Note, set_input() resets input_stat_set to 0. */
5346 if (input_stat_set == 0)
5348 input_stat_set = stat (input_filename, &input_stat);
5349 if (input_stat_set >= 0)
5353 /* If we have the stat for the input_filename
5354 and we can do the stat for the temp_filename
5355 then the they could still refer to the same
5356 file if st_dev/st_ino's are the same. */
5357 if (input_stat_set != 1
5358 || stat (temp_filename, &st_temp) < 0
5359 || input_stat.st_dev != st_temp.st_dev
5360 || input_stat.st_ino != st_temp.st_ino)
5362 /* Just compare canonical pathnames. */
5363 char* input_realname = lrealpath (input_filename);
5364 char* temp_realname = lrealpath (temp_filename);
5365 bool files_differ = strcmp (input_realname, temp_realname);
5366 free (input_realname);
5367 free (temp_realname);
5371 temp_filename = save_string (temp_filename,
5372 temp_filename_length + 1);
5373 obstack_grow (&obstack, temp_filename,
5374 temp_filename_length);
5376 delete_this_arg = 0;
5382 /* See if we already have an association of %g/%u/%U and
5384 for (t = temp_names; t; t = t->next)
5385 if (t->length == suffix_length
5386 && strncmp (t->suffix, suffix, suffix_length) == 0
5387 && t->unique == (c == 'u' || c == 'U' || c == 'j'))
5390 /* Make a new association if needed. %u and %j
5392 if (t == 0 || c == 'u' || c == 'j')
5396 t = XNEW (struct temp_name);
5397 t->next = temp_names;
5400 t->length = suffix_length;
5403 t->suffix = saved_suffix;
5404 saved_suffix = NULL;
5407 t->suffix = save_string (suffix, suffix_length);
5408 t->unique = (c == 'u' || c == 'U' || c == 'j');
5409 temp_filename = make_temp_file (t->suffix);
5410 temp_filename_length = strlen (temp_filename);
5411 t->filename = temp_filename;
5412 t->filename_length = temp_filename_length;
5416 free (saved_suffix);
5418 obstack_grow (&obstack, t->filename, t->filename_length);
5419 delete_this_arg = 1;
5427 if (at_file_supplied)
5429 /* We are going to expand `%i' to `@FILE', where FILE
5430 is a newly-created temporary filename. The filenames
5431 that would usually be expanded in place of %o will be
5432 written to the temporary file. */
5437 for (i = 0; i < n_infiles; i++)
5438 if (compile_input_file_p (&infiles[i]))
5441 argv = (char **) alloca (sizeof (char *) * (n_files + 1));
5443 /* Copy the strings over. */
5444 for (i = 0, j = 0; i < n_infiles; i++)
5445 if (compile_input_file_p (&infiles[i]))
5447 argv[j] = CONST_CAST (char *, infiles[i].name);
5448 infiles[i].compiled = true;
5453 create_at_file (argv);
5456 for (i = 0; (int) i < n_infiles; i++)
5457 if (compile_input_file_p (&infiles[i]))
5459 store_arg (infiles[i].name, 0, 0);
5460 infiles[i].compiled = true;
5465 obstack_grow (&obstack, input_filename, input_filename_length);
5472 struct spec_path_info info;
5476 do_spec_1 ("-imultilib", 1, NULL);
5477 /* Make this a separate argument. */
5478 do_spec_1 (" ", 0, NULL);
5479 do_spec_1 (multilib_dir, 1, NULL);
5480 do_spec_1 (" ", 0, NULL);
5483 if (gcc_exec_prefix)
5485 do_spec_1 ("-iprefix", 1, NULL);
5486 /* Make this a separate argument. */
5487 do_spec_1 (" ", 0, NULL);
5488 do_spec_1 (gcc_exec_prefix, 1, NULL);
5489 do_spec_1 (" ", 0, NULL);
5492 if (target_system_root_changed ||
5493 (target_system_root && target_sysroot_hdrs_suffix))
5495 do_spec_1 ("-isysroot", 1, NULL);
5496 /* Make this a separate argument. */
5497 do_spec_1 (" ", 0, NULL);
5498 do_spec_1 (target_system_root, 1, NULL);
5499 if (target_sysroot_hdrs_suffix)
5500 do_spec_1 (target_sysroot_hdrs_suffix, 1, NULL);
5501 do_spec_1 (" ", 0, NULL);
5504 info.option = "-isystem";
5505 info.append = "include";
5506 info.append_len = strlen (info.append);
5507 info.omit_relative = false;
5508 info.separate_options = true;
5510 for_each_path (&include_prefixes, false, info.append_len,
5513 info.append = "include-fixed";
5514 if (*sysroot_hdrs_suffix_spec)
5515 info.append = concat (info.append, dir_separator_str,
5516 multilib_dir, NULL);
5517 info.append_len = strlen (info.append);
5518 for_each_path (&include_prefixes, false, info.append_len,
5525 int max = n_infiles;
5526 max += lang_specific_extra_outfiles;
5528 if (HAVE_GNU_LD && at_file_supplied)
5530 /* We are going to expand `%o' to `@FILE', where FILE
5531 is a newly-created temporary filename. The filenames
5532 that would usually be expanded in place of %o will be
5533 written to the temporary file. */
5538 /* Convert OUTFILES into a form suitable for writeargv. */
5540 /* Determine how many are non-NULL. */
5541 for (n_files = 0, i = 0; i < max; i++)
5542 n_files += outfiles[i] != NULL;
5544 argv = (char **) alloca (sizeof (char *) * (n_files + 1));
5546 /* Copy the strings over. */
5547 for (i = 0, j = 0; i < max; i++)
5550 argv[j] = CONST_CAST (char *, outfiles[i]);
5555 create_at_file (argv);
5558 for (i = 0; i < max; i++)
5560 store_arg (outfiles[i], 0, 0);
5565 obstack_grow (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX));
5570 this_is_library_file = 1;
5574 this_is_linker_script = 1;
5578 outfiles[input_file_number] = NULL;
5582 this_is_output_file = 1;
5587 int cur_index = argbuf_index;
5588 /* Handle the {...} following the %W. */
5590 fatal ("spec '%s' has invalid '%%W%c", spec, *p);
5591 p = handle_braces (p + 1);
5595 /* If any args were output, mark the last one for deletion
5597 if (argbuf_index != cur_index)
5598 record_temp_file (argbuf[argbuf_index - 1], 0, 1);
5602 /* %x{OPTION} records OPTION for %X to output. */
5608 /* Skip past the option value and make a copy. */
5610 fatal ("spec '%s' has invalid '%%x%c'", spec, *p);
5613 string = save_string (p1 + 1, p - p1 - 2);
5615 /* See if we already recorded this option. */
5616 for (i = 0; i < n_linker_options; i++)
5617 if (! strcmp (string, linker_options[i]))
5623 /* This option is new; add it. */
5624 add_linker_option (string, strlen (string));
5628 /* Dump out the options accumulated previously using %x. */
5630 for (i = 0; i < n_linker_options; i++)
5632 do_spec_1 (linker_options[i], 1, NULL);
5633 /* Make each accumulated option a separate argument. */
5634 do_spec_1 (" ", 0, NULL);
5638 /* Dump out the options accumulated previously using -Wa,. */
5640 for (i = 0; i < n_assembler_options; i++)
5642 do_spec_1 (assembler_options[i], 1, NULL);
5643 /* Make each accumulated option a separate argument. */
5644 do_spec_1 (" ", 0, NULL);
5648 /* Dump out the options accumulated previously using -Wp,. */
5650 for (i = 0; i < n_preprocessor_options; i++)
5652 do_spec_1 (preprocessor_options[i], 1, NULL);
5653 /* Make each accumulated option a separate argument. */
5654 do_spec_1 (" ", 0, NULL);
5658 /* Here are digits and numbers that just process
5659 a certain constant string as a spec. */
5662 value = do_spec_1 (cc1_spec, 0, NULL);
5668 value = do_spec_1 (cc1plus_spec, 0, NULL);
5674 value = do_spec_1 (asm_spec, 0, NULL);
5680 value = do_spec_1 (asm_final_spec, 0, NULL);
5687 const char *const spec
5688 = (input_file_compiler->cpp_spec
5689 ? input_file_compiler->cpp_spec
5691 value = do_spec_1 (spec, 0, NULL);
5698 value = do_spec_1 (endfile_spec, 0, NULL);
5704 value = do_spec_1 (link_spec, 0, NULL);
5710 value = do_spec_1 (lib_spec, 0, NULL);
5716 value = do_spec_1 (libgcc_spec, 0, NULL);
5722 /* We assume there is a directory
5723 separator at the end of this string. */
5724 if (target_system_root)
5726 obstack_grow (&obstack, target_system_root,
5727 strlen (target_system_root));
5728 if (target_sysroot_suffix)
5729 obstack_grow (&obstack, target_sysroot_suffix,
5730 strlen (target_sysroot_suffix));
5735 value = do_spec_1 (startfile_spec, 0, NULL);
5740 /* Here we define characters other than letters and digits. */
5743 p = handle_braces (p);
5749 p = handle_spec_function (p);
5755 obstack_1grow (&obstack, '%');
5762 while (p[len] && p[len] != ' ' && p[len] != '%')
5764 suffix_subst = save_string (p - 1, len + 1);
5769 /* Henceforth ignore the option(s) matching the pattern
5774 int have_wildcard = 0;
5777 while (p[len] && p[len] != ' ' && p[len] != '\t')
5780 if (p[len-1] == '*')
5783 for (i = 0; i < n_switches; i++)
5784 if (!strncmp (switches[i].part1, p, len - have_wildcard)
5785 && (have_wildcard || switches[i].part1[len] == '\0'))
5787 switches[i].live_cond |= SWITCH_IGNORE;
5788 switches[i].validated = 1;
5796 if (soft_matched_part)
5798 do_spec_1 (soft_matched_part, 1, NULL);
5799 do_spec_1 (" ", 0, NULL);
5802 /* Catch the case where a spec string contains something like
5803 '%{foo:%*}'. i.e. there is no * in the pattern on the left
5804 hand side of the :. */
5805 error ("spec failure: '%%*' has not been initialized by pattern match");
5808 /* Process a string found as the value of a spec given by name.
5809 This feature allows individual machine descriptions
5810 to add and use their own specs.
5811 %[...] modifies -D options the way %P does;
5812 %(...) uses the spec unmodified. */
5814 error ("warning: use of obsolete %%[ operator in specs");
5817 const char *name = p;
5818 struct spec_list *sl;
5821 /* The string after the S/P is the name of a spec that is to be
5823 while (*p && *p != ')' && *p != ']')
5826 /* See if it's in the list. */
5827 for (len = p - name, sl = specs; sl; sl = sl->next)
5828 if (sl->name_len == len && !strncmp (sl->name, name, len))
5830 name = *(sl->ptr_spec);
5832 notice ("Processing spec %c%s%c, which is '%s'\n",
5833 c, sl->name, (c == '(') ? ')' : ']', name);
5842 value = do_spec_1 (name, 0, NULL);
5848 char *x = (char *) alloca (strlen (name) * 2 + 1);
5850 const char *y = name;
5853 /* Copy all of NAME into BUF, but put __ after
5854 every -D and at the end of each arg. */
5857 if (! strncmp (y, "-D", 2))
5868 && (*y == ' ' || *y == '\t' || *y == '='
5869 || *y == '}' || *y == 0))
5882 value = do_spec_1 (buf, 0, NULL);
5888 /* Discard the closing paren or bracket. */
5895 error ("spec failure: unrecognized spec option '%c'", c);
5901 /* Backslash: treat next character as ordinary. */
5906 /* Ordinary character: put it into the current argument. */
5907 obstack_1grow (&obstack, c);
5911 /* End of string. If we are processing a spec function, we need to
5912 end any pending argument. */
5913 if (processing_spec_function)
5919 /* Look up a spec function. */
5921 static const struct spec_function *
5922 lookup_spec_function (const char *name)
5924 const struct spec_function *sf;
5926 for (sf = static_spec_functions; sf->name != NULL; sf++)
5927 if (strcmp (sf->name, name) == 0)
5933 /* Evaluate a spec function. */
5936 eval_spec_function (const char *func, const char *args)
5938 const struct spec_function *sf;
5939 const char *funcval;
5941 /* Saved spec processing context. */
5942 int save_argbuf_index;
5943 int save_argbuf_length;
5944 const char **save_argbuf;
5947 int save_delete_this_arg;
5948 int save_this_is_output_file;
5949 int save_this_is_library_file;
5950 int save_input_from_pipe;
5951 int save_this_is_linker_script;
5952 const char *save_suffix_subst;
5955 sf = lookup_spec_function (func);
5957 fatal ("unknown spec function '%s'", func);
5959 /* Push the spec processing context. */
5960 save_argbuf_index = argbuf_index;
5961 save_argbuf_length = argbuf_length;
5962 save_argbuf = argbuf;
5964 save_arg_going = arg_going;
5965 save_delete_this_arg = delete_this_arg;
5966 save_this_is_output_file = this_is_output_file;
5967 save_this_is_library_file = this_is_library_file;
5968 save_this_is_linker_script = this_is_linker_script;
5969 save_input_from_pipe = input_from_pipe;
5970 save_suffix_subst = suffix_subst;
5972 /* Create a new spec processing context, and build the function
5976 if (do_spec_2 (args) < 0)
5977 fatal ("error in args to spec function '%s'", func);
5979 /* argbuf_index is an index for the next argument to be inserted, and
5980 so contains the count of the args already inserted. */
5982 funcval = (*sf->func) (argbuf_index, argbuf);
5984 /* Pop the spec processing context. */
5985 argbuf_index = save_argbuf_index;
5986 argbuf_length = save_argbuf_length;
5988 argbuf = save_argbuf;
5990 arg_going = save_arg_going;
5991 delete_this_arg = save_delete_this_arg;
5992 this_is_output_file = save_this_is_output_file;
5993 this_is_library_file = save_this_is_library_file;
5994 this_is_linker_script = save_this_is_linker_script;
5995 input_from_pipe = save_input_from_pipe;
5996 suffix_subst = save_suffix_subst;
6001 /* Handle a spec function call of the form:
6005 ARGS is processed as a spec in a separate context and split into an
6006 argument vector in the normal fashion. The function returns a string
6007 containing a spec which we then process in the caller's context, or
6008 NULL if no processing is required. */
6011 handle_spec_function (const char *p)
6014 const char *endp, *funcval;
6017 processing_spec_function++;
6019 /* Get the function name. */
6020 for (endp = p; *endp != '\0'; endp++)
6022 if (*endp == '(') /* ) */
6024 /* Only allow [A-Za-z0-9], -, and _ in function names. */
6025 if (!ISALNUM (*endp) && !(*endp == '-' || *endp == '_'))
6026 fatal ("malformed spec function name");
6028 if (*endp != '(') /* ) */
6029 fatal ("no arguments for spec function");
6030 func = save_string (p, endp - p);
6033 /* Get the arguments. */
6034 for (count = 0; *endp != '\0'; endp++)
6043 else if (*endp == '(') /* ) */
6048 fatal ("malformed spec function arguments");
6049 args = save_string (p, endp - p);
6052 /* p now points to just past the end of the spec function expression. */
6054 funcval = eval_spec_function (func, args);
6055 if (funcval != NULL && do_spec_1 (funcval, 0, NULL) < 0)
6061 processing_spec_function--;
6066 /* Inline subroutine of handle_braces. Returns true if the current
6067 input suffix matches the atom bracketed by ATOM and END_ATOM. */
6069 input_suffix_matches (const char *atom, const char *end_atom)
6071 return (input_suffix
6072 && !strncmp (input_suffix, atom, end_atom - atom)
6073 && input_suffix[end_atom - atom] == '\0');
6076 /* Subroutine of handle_braces. Returns true if the current
6077 input file's spec name matches the atom bracketed by ATOM and END_ATOM. */
6079 input_spec_matches (const char *atom, const char *end_atom)
6081 return (input_file_compiler
6082 && input_file_compiler->suffix
6083 && input_file_compiler->suffix[0] != '\0'
6084 && !strncmp (input_file_compiler->suffix + 1, atom,
6086 && input_file_compiler->suffix[end_atom - atom + 1] == '\0');
6089 /* Subroutine of handle_braces. Returns true if a switch
6090 matching the atom bracketed by ATOM and END_ATOM appeared on the
6093 switch_matches (const char *atom, const char *end_atom, int starred)
6096 int len = end_atom - atom;
6097 int plen = starred ? len : -1;
6099 for (i = 0; i < n_switches; i++)
6100 if (!strncmp (switches[i].part1, atom, len)
6101 && (starred || switches[i].part1[len] == '\0')
6102 && check_live_switch (i, plen))
6108 /* Inline subroutine of handle_braces. Mark all of the switches which
6109 match ATOM (extends to END_ATOM; STARRED indicates whether there
6110 was a star after the atom) for later processing. */
6112 mark_matching_switches (const char *atom, const char *end_atom, int starred)
6115 int len = end_atom - atom;
6116 int plen = starred ? len : -1;
6118 for (i = 0; i < n_switches; i++)
6119 if (!strncmp (switches[i].part1, atom, len)
6120 && (starred || switches[i].part1[len] == '\0')
6121 && check_live_switch (i, plen))
6122 switches[i].ordering = 1;
6125 /* Inline subroutine of handle_braces. Process all the currently
6126 marked switches through give_switch, and clear the marks. */
6128 process_marked_switches (void)
6132 for (i = 0; i < n_switches; i++)
6133 if (switches[i].ordering == 1)
6135 switches[i].ordering = 0;
6140 /* Handle a %{ ... } construct. P points just inside the leading {.
6141 Returns a pointer one past the end of the brace block, or 0
6142 if we call do_spec_1 and that returns -1. */
6145 handle_braces (const char *p)
6147 const char *atom, *end_atom;
6148 const char *d_atom = NULL, *d_end_atom = NULL;
6149 const char *orig = p;
6157 bool a_must_be_last = false;
6158 bool ordered_set = false;
6159 bool disjunct_set = false;
6160 bool disj_matched = false;
6161 bool disj_starred = true;
6162 bool n_way_choice = false;
6163 bool n_way_matched = false;
6165 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
6172 /* Scan one "atom" (S in the description above of %{}, possibly
6173 with '!', '.', '@', ',', or '*' modifiers). */
6175 a_is_suffix = false;
6176 a_is_starred = false;
6177 a_is_negated = false;
6178 a_is_spectype = false;
6182 p++, a_is_negated = true;
6186 p++, a_is_suffix = true;
6188 p++, a_is_spectype = true;
6191 while (ISIDNUM(*p) || *p == '-' || *p == '+' || *p == '='
6192 || *p == ',' || *p == '.' || *p == '@')
6197 p++, a_is_starred = 1;
6203 /* Substitute the switch(es) indicated by the current atom. */
6205 if (disjunct_set || n_way_choice || a_is_negated || a_is_suffix
6206 || a_is_spectype || atom == end_atom)
6209 mark_matching_switches (atom, end_atom, a_is_starred);
6212 process_marked_switches ();
6216 /* Substitute some text if the current atom appears as a switch
6218 disjunct_set = true;
6222 if (atom == end_atom)
6224 if (!n_way_choice || disj_matched || *p == '|'
6225 || a_is_negated || a_is_suffix || a_is_spectype
6229 /* An empty term may appear as the last choice of an
6230 N-way choice set; it means "otherwise". */
6231 a_must_be_last = true;
6232 disj_matched = !n_way_matched;
6233 disj_starred = false;
6237 if ((a_is_suffix || a_is_spectype) && a_is_starred)
6241 disj_starred = false;
6243 /* Don't bother testing this atom if we already have a
6245 if (!disj_matched && !n_way_matched)
6248 a_matched = input_suffix_matches (atom, end_atom);
6249 else if (a_is_spectype)
6250 a_matched = input_spec_matches (atom, end_atom);
6252 a_matched = switch_matches (atom, end_atom, a_is_starred);
6254 if (a_matched != a_is_negated)
6256 disj_matched = true;
6258 d_end_atom = end_atom;
6265 /* Found the body, that is, the text to substitute if the
6266 current disjunction matches. */
6267 p = process_brace_body (p + 1, d_atom, d_end_atom, disj_starred,
6268 disj_matched && !n_way_matched);
6272 /* If we have an N-way choice, reset state for the next
6276 n_way_choice = true;
6277 n_way_matched |= disj_matched;
6278 disj_matched = false;
6279 disj_starred = true;
6280 d_atom = d_end_atom = NULL;
6289 while (*p++ != '}');
6294 fatal ("braced spec '%s' is invalid at '%c'", orig, *p);
6299 /* Subroutine of handle_braces. Scan and process a brace substitution body
6300 (X in the description of %{} syntax). P points one past the colon;
6301 ATOM and END_ATOM bracket the first atom which was found to be true
6302 (present) in the current disjunction; STARRED indicates whether all
6303 the atoms in the current disjunction were starred (for syntax validation);
6304 MATCHED indicates whether the disjunction matched or not, and therefore
6305 whether or not the body is to be processed through do_spec_1 or just
6306 skipped. Returns a pointer to the closing } or ;, or 0 if do_spec_1
6310 process_brace_body (const char *p, const char *atom, const char *end_atom,
6311 int starred, int matched)
6313 const char *body, *end_body;
6314 unsigned int nesting_level;
6315 bool have_subst = false;
6317 /* Locate the closing } or ;, honoring nested braces.
6318 Trim trailing whitespace. */
6327 if (!--nesting_level)
6330 else if (*p == ';' && nesting_level == 1)
6332 else if (*p == '%' && p[1] == '*' && nesting_level == 1)
6334 else if (*p == '\0')
6340 while (end_body[-1] == ' ' || end_body[-1] == '\t')
6343 if (have_subst && !starred)
6348 /* Copy the substitution body to permanent storage and execute it.
6349 If have_subst is false, this is a simple matter of running the
6350 body through do_spec_1... */
6351 char *string = save_string (body, end_body - body);
6354 if (do_spec_1 (string, 0, NULL) < 0)
6359 /* ... but if have_subst is true, we have to process the
6360 body once for each matching switch, with %* set to the
6361 variant part of the switch. */
6362 unsigned int hard_match_len = end_atom - atom;
6365 for (i = 0; i < n_switches; i++)
6366 if (!strncmp (switches[i].part1, atom, hard_match_len)
6367 && check_live_switch (i, hard_match_len))
6369 if (do_spec_1 (string, 0,
6370 &switches[i].part1[hard_match_len]) < 0)
6372 /* Pass any arguments this switch has. */
6374 suffix_subst = NULL;
6382 fatal ("braced spec body '%s' is invalid", body);
6385 /* Return 0 iff switch number SWITCHNUM is obsoleted by a later switch
6386 on the command line. PREFIX_LENGTH is the length of XXX in an {XXX*}
6387 spec, or -1 if either exact match or %* is used.
6389 A -O switch is obsoleted by a later -O switch. A -f, -m, or -W switch
6390 whose value does not begin with "no-" is obsoleted by the same value
6391 with the "no-", similarly for a switch with the "no-" prefix. */
6394 check_live_switch (int switchnum, int prefix_length)
6396 const char *name = switches[switchnum].part1;
6399 /* If we already processed this switch and determined if it was
6400 live or not, return our past determination. */
6401 if (switches[switchnum].live_cond != 0)
6402 return ((switches[switchnum].live_cond & SWITCH_LIVE) != 0
6403 && (switches[switchnum].live_cond & SWITCH_FALSE) == 0
6404 && (switches[switchnum].live_cond & SWITCH_IGNORE) == 0);
6406 /* In the common case of {<at-most-one-letter>*}, a negating
6407 switch would always match, so ignore that case. We will just
6408 send the conflicting switches to the compiler phase. */
6409 if (prefix_length >= 0 && prefix_length <= 1)
6412 /* Now search for duplicate in a manner that depends on the name. */
6416 for (i = switchnum + 1; i < n_switches; i++)
6417 if (switches[i].part1[0] == 'O')
6419 switches[switchnum].validated = 1;
6420 switches[switchnum].live_cond = SWITCH_FALSE;
6425 case 'W': case 'f': case 'm':
6426 if (! strncmp (name + 1, "no-", 3))
6428 /* We have Xno-YYY, search for XYYY. */
6429 for (i = switchnum + 1; i < n_switches; i++)
6430 if (switches[i].part1[0] == name[0]
6431 && ! strcmp (&switches[i].part1[1], &name[4]))
6433 switches[switchnum].validated = 1;
6434 switches[switchnum].live_cond = SWITCH_FALSE;
6440 /* We have XYYY, search for Xno-YYY. */
6441 for (i = switchnum + 1; i < n_switches; i++)
6442 if (switches[i].part1[0] == name[0]
6443 && switches[i].part1[1] == 'n'
6444 && switches[i].part1[2] == 'o'
6445 && switches[i].part1[3] == '-'
6446 && !strcmp (&switches[i].part1[4], &name[1]))
6448 switches[switchnum].validated = 1;
6449 switches[switchnum].live_cond = SWITCH_FALSE;
6456 /* Otherwise the switch is live. */
6457 switches[switchnum].live_cond |= SWITCH_LIVE;
6461 /* Pass a switch to the current accumulating command
6462 in the same form that we received it.
6463 SWITCHNUM identifies the switch; it is an index into
6464 the vector of switches gcc received, which is `switches'.
6465 This cannot fail since it never finishes a command line.
6467 If OMIT_FIRST_WORD is nonzero, then we omit .part1 of the argument. */
6470 give_switch (int switchnum, int omit_first_word)
6472 if ((switches[switchnum].live_cond & SWITCH_IGNORE) != 0)
6475 if (!omit_first_word)
6477 do_spec_1 ("-", 0, NULL);
6478 do_spec_1 (switches[switchnum].part1, 1, NULL);
6481 if (switches[switchnum].args != 0)
6484 for (p = switches[switchnum].args; *p; p++)
6486 const char *arg = *p;
6488 do_spec_1 (" ", 0, NULL);
6491 unsigned length = strlen (arg);
6494 while (length-- && !IS_DIR_SEPARATOR (arg[length]))
6495 if (arg[length] == '.')
6497 (CONST_CAST(char *, arg))[length] = 0;
6501 do_spec_1 (arg, 1, NULL);
6503 (CONST_CAST(char *, arg))[length] = '.';
6504 do_spec_1 (suffix_subst, 1, NULL);
6507 do_spec_1 (arg, 1, NULL);
6511 do_spec_1 (" ", 0, NULL);
6512 switches[switchnum].validated = 1;
6515 /* Search for a file named NAME trying various prefixes including the
6516 user's -B prefix and some standard ones.
6517 Return the absolute file name found. If nothing is found, return NAME. */
6520 find_file (const char *name)
6522 char *newname = find_a_file (&startfile_prefixes, name, R_OK, true);
6523 return newname ? newname : name;
6526 /* Determine whether a directory exists. If LINKER, return 0 for
6527 certain fixed names not needed by the linker. */
6530 is_directory (const char *path1, bool linker)
6537 /* Ensure the string ends with "/.". The resulting path will be a
6538 directory even if the given path is a symbolic link. */
6539 len1 = strlen (path1);
6540 path = (char *) alloca (3 + len1);
6541 memcpy (path, path1, len1);
6543 if (!IS_DIR_SEPARATOR (cp[-1]))
6544 *cp++ = DIR_SEPARATOR;
6548 /* Exclude directories that the linker is known to search. */
6550 && IS_DIR_SEPARATOR (path[0])
6552 && strncmp (path + 1, "lib", 3) == 0)
6554 && strncmp (path + 1, "usr", 3) == 0
6555 && IS_DIR_SEPARATOR (path[4])
6556 && strncmp (path + 5, "lib", 3) == 0)))
6559 return (stat (path, &st) >= 0 && S_ISDIR (st.st_mode));
6562 /* Set up the various global variables to indicate that we're processing
6563 the input file named FILENAME. */
6566 set_input (const char *filename)
6570 input_filename = filename;
6571 input_filename_length = strlen (input_filename);
6572 input_basename = lbasename (input_filename);
6574 /* Find a suffix starting with the last period,
6575 and set basename_length to exclude that suffix. */
6576 basename_length = strlen (input_basename);
6577 suffixed_basename_length = basename_length;
6578 p = input_basename + basename_length;
6579 while (p != input_basename && *p != '.')
6581 if (*p == '.' && p != input_basename)
6583 basename_length = p - input_basename;
6584 input_suffix = p + 1;
6589 /* If a spec for 'g', 'u', or 'U' is seen with -save-temps then
6590 we will need to do a stat on the input_filename. The
6591 INPUT_STAT_SET signals that the stat is needed. */
6595 /* On fatal signals, delete all the temporary files. */
6598 fatal_error (int signum)
6600 signal (signum, SIG_DFL);
6601 delete_failure_queue ();
6602 delete_temp_files ();
6603 /* Get the same signal again, this time not handled,
6604 so its normal effect occurs. */
6605 kill (getpid (), signum);
6608 /* Compare the contents of the two files named CMPFILE[0] and
6609 CMPFILE[1]. Return zero if they're identical, nonzero
6613 compare_files (char *cmpfile[])
6616 FILE *temp[2] = { NULL, NULL };
6622 void *map[2] = { NULL, NULL };
6624 for (i = 0; i < 2; i++)
6628 if (stat (cmpfile[i], &st) < 0 || !S_ISREG (st.st_mode))
6630 error ("%s: could not determine length of compare-debug file %s",
6631 input_filename, cmpfile[i]);
6636 length[i] = st.st_size;
6639 if (!ret && length[0] != length[1])
6641 error ("%s: -fcompare-debug failure (length)", input_filename);
6646 for (i = 0; i < 2; i++)
6648 int fd = open (cmpfile[i], O_RDONLY);
6651 error ("%s: could not open compare-debug file %s",
6652 input_filename, cmpfile[i]);
6657 map[i] = mmap (NULL, length[i], PROT_READ, MAP_PRIVATE, fd, 0);
6660 if (map[i] == (void *) MAP_FAILED)
6669 if (memcmp (map[0], map[1], length[0]) != 0)
6671 error ("%s: -fcompare-debug failure", input_filename);
6676 for (i = 0; i < 2; i++)
6678 munmap ((caddr_t) map[i], length[i]);
6687 for (i = 0; i < 2; i++)
6689 temp[i] = fopen (cmpfile[i], "r");
6692 error ("%s: could not open compare-debug file %s",
6693 input_filename, cmpfile[i]);
6699 if (!ret && temp[0] && temp[1])
6703 c0 = fgetc (temp[0]);
6704 c1 = fgetc (temp[1]);
6708 error ("%s: -fcompare-debug failure",
6718 for (i = 1; i >= 0; i--)
6727 extern int main (int, char **);
6730 main (int argc, char **argv)
6734 int linker_was_run = 0;
6735 int lang_n_infiles = 0;
6736 int num_linker_inputs = 0;
6737 char *explicit_link_files;
6740 struct user_specs *uptr;
6741 char **old_argv = argv;
6743 /* Initialize here, not in definition. The IRIX 6 O32 cc sometimes chokes
6744 on ?: in file-scope variable initializations. */
6745 asm_debug = ASM_DEBUG_SPEC;
6747 p = argv[0] + strlen (argv[0]);
6748 while (p != argv[0] && !IS_DIR_SEPARATOR (p[-1]))
6752 xmalloc_set_program_name (programname);
6754 expandargv (&argc, &argv);
6756 /* Determine if any expansions were made. */
6757 if (argv != old_argv)
6758 at_file_supplied = true;
6760 prune_options (&argc, &argv);
6762 #ifdef GCC_DRIVER_HOST_INITIALIZATION
6763 /* Perform host dependent initialization when needed. */
6764 GCC_DRIVER_HOST_INITIALIZATION;
6767 /* Unlock the stdio streams. */
6768 unlock_std_streams ();
6770 gcc_init_libintl ();
6772 if (signal (SIGINT, SIG_IGN) != SIG_IGN)
6773 signal (SIGINT, fatal_error);
6775 if (signal (SIGHUP, SIG_IGN) != SIG_IGN)
6776 signal (SIGHUP, fatal_error);
6778 if (signal (SIGTERM, SIG_IGN) != SIG_IGN)
6779 signal (SIGTERM, fatal_error);
6781 if (signal (SIGPIPE, SIG_IGN) != SIG_IGN)
6782 signal (SIGPIPE, fatal_error);
6785 /* We *MUST* set SIGCHLD to SIG_DFL so that the wait4() call will
6786 receive the signal. A different setting is inheritable */
6787 signal (SIGCHLD, SIG_DFL);
6790 /* Allocate the argument vector. */
6793 obstack_init (&obstack);
6795 /* Build multilib_select, et. al from the separate lines that make up each
6796 multilib selection. */
6798 const char *const *q = multilib_raw;
6801 obstack_init (&multilib_obstack);
6802 while ((p = *q++) != (char *) 0)
6803 obstack_grow (&multilib_obstack, p, strlen (p));
6805 obstack_1grow (&multilib_obstack, 0);
6806 multilib_select = XOBFINISH (&multilib_obstack, const char *);
6808 q = multilib_matches_raw;
6809 while ((p = *q++) != (char *) 0)
6810 obstack_grow (&multilib_obstack, p, strlen (p));
6812 obstack_1grow (&multilib_obstack, 0);
6813 multilib_matches = XOBFINISH (&multilib_obstack, const char *);
6815 q = multilib_exclusions_raw;
6816 while ((p = *q++) != (char *) 0)
6817 obstack_grow (&multilib_obstack, p, strlen (p));
6819 obstack_1grow (&multilib_obstack, 0);
6820 multilib_exclusions = XOBFINISH (&multilib_obstack, const char *);
6823 for (i = 0; i < ARRAY_SIZE (multilib_defaults_raw); i++)
6826 obstack_1grow (&multilib_obstack, ' ');
6827 obstack_grow (&multilib_obstack,
6828 multilib_defaults_raw[i],
6829 strlen (multilib_defaults_raw[i]));
6833 obstack_1grow (&multilib_obstack, 0);
6834 multilib_defaults = XOBFINISH (&multilib_obstack, const char *);
6837 /* Set up to remember the pathname of gcc and any options
6838 needed for collect. We use argv[0] instead of programname because
6839 we need the complete pathname. */
6840 obstack_init (&collect_obstack);
6841 obstack_grow (&collect_obstack, "COLLECT_GCC=", sizeof ("COLLECT_GCC=") - 1);
6842 obstack_grow (&collect_obstack, argv[0], strlen (argv[0]) + 1);
6843 xputenv (XOBFINISH (&collect_obstack, char *));
6845 #ifdef INIT_ENVIRONMENT
6846 /* Set up any other necessary machine specific environment variables. */
6847 xputenv (INIT_ENVIRONMENT);
6850 /* Make a table of what switches there are (switches, n_switches).
6851 Make a table of specified input files (infiles, n_infiles).
6852 Decode switches that are handled locally. */
6854 process_command (argc, CONST_CAST2 (const char **, char **, argv));
6856 /* Initialize the vector of specs to just the default.
6857 This means one element containing 0s, as a terminator. */
6859 compilers = XNEWVAR (struct compiler, sizeof default_compilers);
6860 memcpy (compilers, default_compilers, sizeof default_compilers);
6861 n_compilers = n_default_compilers;
6863 /* Read specs from a file if there is one. */
6865 machine_suffix = concat (spec_machine, dir_separator_str,
6866 spec_version, dir_separator_str, NULL);
6867 just_machine_suffix = concat (spec_machine, dir_separator_str, NULL);
6869 specs_file = find_a_file (&startfile_prefixes, "specs", R_OK, true);
6870 /* Read the specs file unless it is a default one. */
6871 if (specs_file != 0 && strcmp (specs_file, "specs"))
6872 read_specs (specs_file, TRUE);
6876 /* We need to check standard_exec_prefix/just_machine_suffix/specs
6877 for any override of as, ld and libraries. */
6878 specs_file = (char *) alloca (strlen (standard_exec_prefix)
6879 + strlen (just_machine_suffix) + sizeof ("specs"));
6881 strcpy (specs_file, standard_exec_prefix);
6882 strcat (specs_file, just_machine_suffix);
6883 strcat (specs_file, "specs");
6884 if (access (specs_file, R_OK) == 0)
6885 read_specs (specs_file, TRUE);
6887 /* Process any configure-time defaults specified for the command line
6888 options, via OPTION_DEFAULT_SPECS. */
6889 for (i = 0; i < ARRAY_SIZE (option_default_specs); i++)
6890 do_option_spec (option_default_specs[i].name,
6891 option_default_specs[i].spec);
6893 /* Process DRIVER_SELF_SPECS, adding any new options to the end
6894 of the command line. */
6896 for (i = 0; i < ARRAY_SIZE (driver_self_specs); i++)
6897 do_self_spec (driver_self_specs[i]);
6901 enum save_temps save;
6903 if (!compare_debug_second)
6905 n_switches_debug_check[1] = n_switches;
6906 switches_debug_check[1] = XDUPVEC (struct switchstr, switches,
6909 do_self_spec ("%:compare-debug-self-opt()");
6910 n_switches_debug_check[0] = n_switches;
6911 switches_debug_check[0] = switches;
6913 n_switches = n_switches_debug_check[1];
6914 switches = switches_debug_check[1];
6917 /* Avoid crash when computing %j in this early. */
6918 save = save_temps_flag;
6919 save_temps_flag = SAVE_TEMPS_NONE;
6921 compare_debug = -compare_debug;
6922 do_self_spec ("%:compare-debug-self-opt()");
6924 save_temps_flag = save;
6926 if (!compare_debug_second)
6928 n_switches_debug_check[1] = n_switches;
6929 switches_debug_check[1] = switches;
6930 compare_debug = -compare_debug;
6931 n_switches = n_switches_debug_check[0];
6932 switches = switches_debug_check[0];
6936 /* If not cross-compiling, look for executables in the standard
6938 if (*cross_compile == '0')
6940 if (*md_exec_prefix)
6942 add_prefix (&exec_prefixes, md_exec_prefix, "GCC",
6943 PREFIX_PRIORITY_LAST, 0, 0);
6947 /* Process sysroot_suffix_spec. */
6948 if (*sysroot_suffix_spec != 0
6949 && do_spec_2 (sysroot_suffix_spec) == 0)
6951 if (argbuf_index > 1)
6952 error ("spec failure: more than one arg to SYSROOT_SUFFIX_SPEC");
6953 else if (argbuf_index == 1)
6954 target_sysroot_suffix = xstrdup (argbuf[argbuf_index -1]);
6957 #ifdef HAVE_LD_SYSROOT
6958 /* Pass the --sysroot option to the linker, if it supports that. If
6959 there is a sysroot_suffix_spec, it has already been processed by
6960 this point, so target_system_root really is the system root we
6962 if (target_system_root)
6964 obstack_grow (&obstack, "%(sysroot_spec) ", strlen ("%(sysroot_spec) "));
6965 obstack_grow0 (&obstack, link_spec, strlen (link_spec));
6966 set_spec ("link", XOBFINISH (&obstack, const char *));
6970 /* Process sysroot_hdrs_suffix_spec. */
6971 if (*sysroot_hdrs_suffix_spec != 0
6972 && do_spec_2 (sysroot_hdrs_suffix_spec) == 0)
6974 if (argbuf_index > 1)
6975 error ("spec failure: more than one arg to SYSROOT_HEADERS_SUFFIX_SPEC");
6976 else if (argbuf_index == 1)
6977 target_sysroot_hdrs_suffix = xstrdup (argbuf[argbuf_index -1]);
6980 /* Look for startfiles in the standard places. */
6981 if (*startfile_prefix_spec != 0
6982 && do_spec_2 (startfile_prefix_spec) == 0
6983 && do_spec_1 (" ", 0, NULL) == 0)
6986 for (ndx = 0; ndx < argbuf_index; ndx++)
6987 add_sysrooted_prefix (&startfile_prefixes, argbuf[ndx], "BINUTILS",
6988 PREFIX_PRIORITY_LAST, 0, 1);
6990 /* We should eventually get rid of all these and stick to
6991 startfile_prefix_spec exclusively. */
6992 else if (*cross_compile == '0' || target_system_root)
6994 if (*md_startfile_prefix)
6995 add_sysrooted_prefix (&startfile_prefixes, md_startfile_prefix,
6996 "GCC", PREFIX_PRIORITY_LAST, 0, 1);
6998 if (*md_startfile_prefix_1)
6999 add_sysrooted_prefix (&startfile_prefixes, md_startfile_prefix_1,
7000 "GCC", PREFIX_PRIORITY_LAST, 0, 1);
7002 /* If standard_startfile_prefix is relative, base it on
7003 standard_exec_prefix. This lets us move the installed tree
7004 as a unit. If GCC_EXEC_PREFIX is defined, base
7005 standard_startfile_prefix on that as well.
7007 If the prefix is relative, only search it for native compilers;
7008 otherwise we will search a directory containing host libraries. */
7009 if (IS_ABSOLUTE_PATH (standard_startfile_prefix))
7010 add_sysrooted_prefix (&startfile_prefixes,
7011 standard_startfile_prefix, "BINUTILS",
7012 PREFIX_PRIORITY_LAST, 0, 1);
7013 else if (*cross_compile == '0')
7015 add_prefix (&startfile_prefixes,
7016 concat (gcc_exec_prefix
7017 ? gcc_exec_prefix : standard_exec_prefix,
7019 standard_startfile_prefix, NULL),
7020 NULL, PREFIX_PRIORITY_LAST, 0, 1);
7023 /* Sysrooted prefixes are relocated because target_system_root is
7024 also relocated by gcc_exec_prefix. */
7025 if (*standard_startfile_prefix_1)
7026 add_sysrooted_prefix (&startfile_prefixes,
7027 standard_startfile_prefix_1, "BINUTILS",
7028 PREFIX_PRIORITY_LAST, 0, 1);
7029 if (*standard_startfile_prefix_2)
7030 add_sysrooted_prefix (&startfile_prefixes,
7031 standard_startfile_prefix_2, "BINUTILS",
7032 PREFIX_PRIORITY_LAST, 0, 1);
7035 /* Process any user specified specs in the order given on the command
7037 for (uptr = user_specs_head; uptr; uptr = uptr->next)
7039 char *filename = find_a_file (&startfile_prefixes, uptr->filename,
7041 read_specs (filename ? filename : uptr->filename, FALSE);
7044 /* If we have a GCC_EXEC_PREFIX envvar, modify it for cpp's sake. */
7045 if (gcc_exec_prefix)
7046 gcc_exec_prefix = concat (gcc_exec_prefix, spec_machine, dir_separator_str,
7047 spec_version, dir_separator_str, NULL);
7049 /* Now we have the specs.
7050 Set the `valid' bits for switches that match anything in any spec. */
7052 validate_all_switches ();
7054 /* Now that we have the switches and the specs, set
7055 the subdirectory based on the options. */
7056 set_multilib_dir ();
7058 /* Warn about any switches that no pass was interested in. */
7060 for (i = 0; (int) i < n_switches; i++)
7061 if (! switches[i].validated)
7062 error ("unrecognized option '-%s'", switches[i].part1);
7064 /* Obey some of the options. */
7066 if (print_search_dirs)
7068 printf (_("install: %s%s\n"),
7069 gcc_exec_prefix ? gcc_exec_prefix : standard_exec_prefix,
7070 gcc_exec_prefix ? "" : machine_suffix);
7071 printf (_("programs: %s\n"),
7072 build_search_list (&exec_prefixes, "", false, false));
7073 printf (_("libraries: %s\n"),
7074 build_search_list (&startfile_prefixes, "", false, true));
7078 if (print_file_name)
7080 printf ("%s\n", find_file (print_file_name));
7084 if (print_prog_name)
7086 char *newname = find_a_file (&exec_prefixes, print_prog_name, X_OK, 0);
7087 printf ("%s\n", (newname ? newname : print_prog_name));
7091 if (print_multi_lib)
7093 print_multilib_info ();
7097 if (print_multi_directory)
7099 if (multilib_dir == NULL)
7102 printf ("%s\n", multilib_dir);
7108 if (target_system_root)
7110 if (target_sysroot_suffix)
7111 printf ("%s%s\n", target_system_root, target_sysroot_suffix);
7113 printf ("%s\n", target_system_root);
7118 if (print_multi_os_directory)
7120 if (multilib_os_dir == NULL)
7123 printf ("%s\n", multilib_os_dir);
7127 if (print_sysroot_headers_suffix)
7129 if (*sysroot_hdrs_suffix_spec)
7131 printf("%s\n", (target_sysroot_hdrs_suffix
7132 ? target_sysroot_hdrs_suffix
7137 /* The error status indicates that only one set of fixed
7138 headers should be built. */
7139 fatal ("not configured with sysroot headers suffix");
7142 if (print_help_list)
7148 printf (_("\nFor bug reporting instructions, please see:\n"));
7149 printf ("%s.\n", bug_report_url);
7154 /* We do not exit here. Instead we have created a fake input file
7155 called 'help-dummy' which needs to be compiled, and we pass this
7156 on the various sub-processes, along with the --help switch.
7157 Ensure their output appears after ours. */
7158 fputc ('\n', stdout);
7164 printf (_("%s %s%s\n"), programname, pkgversion_string,
7166 printf ("Copyright %s 2009 Free Software Foundation, Inc.\n",
7168 fputs (_("This is free software; see the source for copying conditions. There is NO\n\
7169 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\n"),
7174 /* We do not exit here. We use the same mechanism of --help to print
7175 the version of the sub-processes. */
7176 fputc ('\n', stdout);
7185 notice ("Target: %s\n", spec_machine);
7186 notice ("Configured with: %s\n", configuration_arguments);
7188 #ifdef THREAD_MODEL_SPEC
7189 /* We could have defined THREAD_MODEL_SPEC to "%*" by default,
7190 but there's no point in doing all this processing just to get
7191 thread_model back. */
7192 obstack_init (&obstack);
7193 do_spec_1 (THREAD_MODEL_SPEC, 0, thread_model);
7194 obstack_1grow (&obstack, '\0');
7195 thrmod = XOBFINISH (&obstack, const char *);
7197 thrmod = thread_model;
7200 notice ("Thread model: %s\n", thrmod);
7202 /* compiler_version is truncated at the first space when initialized
7203 from version string, so truncate version_string at the first space
7204 before comparing. */
7205 for (n = 0; version_string[n]; n++)
7206 if (version_string[n] == ' ')
7209 if (! strncmp (version_string, compiler_version, n)
7210 && compiler_version[n] == 0)
7211 notice ("gcc version %s %s\n", version_string, pkgversion_string);
7213 notice ("gcc driver version %s %sexecuting gcc version %s\n",
7214 version_string, pkgversion_string, compiler_version);
7220 if (n_infiles == added_libraries)
7221 fatal ("no input files");
7223 /* Make a place to record the compiler output file names
7224 that correspond to the input files. */
7227 i += lang_specific_extra_outfiles;
7228 outfiles = XCNEWVEC (const char *, i);
7230 /* Record which files were specified explicitly as link input. */
7232 explicit_link_files = XCNEWVEC (char, n_infiles);
7235 combine_inputs = true;
7237 combine_inputs = false;
7239 for (i = 0; (int) i < n_infiles; i++)
7241 const char *name = infiles[i].name;
7242 struct compiler *compiler = lookup_compiler (name,
7244 infiles[i].language);
7246 if (compiler && !(compiler->combinable))
7247 combine_inputs = false;
7249 if (lang_n_infiles > 0 && compiler != input_file_compiler
7250 && infiles[i].language && infiles[i].language[0] != '*')
7251 infiles[i].incompiler = compiler;
7255 input_file_compiler = compiler;
7256 infiles[i].incompiler = compiler;
7260 /* Since there is no compiler for this input file, assume it is a
7262 explicit_link_files[i] = 1;
7263 infiles[i].incompiler = NULL;
7265 infiles[i].compiled = false;
7266 infiles[i].preprocessed = false;
7269 if (!combine_inputs && have_c && have_o && lang_n_infiles > 1)
7270 fatal ("cannot specify -o with -c or -S with multiple files");
7272 if (combine_flag && save_temps_flag)
7274 bool save_combine_inputs = combine_inputs;
7275 /* Must do a separate pre-processing pass for C & Objective-C files, to
7276 obtain individual .i files. */
7278 combine_inputs = false;
7279 for (i = 0; (int) i < n_infiles; i++)
7281 int this_file_error = 0;
7283 input_file_number = i;
7284 set_input (infiles[i].name);
7285 if (infiles[i].incompiler
7286 && (infiles[i].incompiler)->needs_preprocessing)
7287 input_file_compiler = infiles[i].incompiler;
7291 if (input_file_compiler)
7293 if (input_file_compiler->spec[0] == '#')
7295 error ("%s: %s compiler not installed on this system",
7296 input_filename, &input_file_compiler->spec[1]);
7297 this_file_error = 1;
7301 value = do_spec (input_file_compiler->spec);
7302 infiles[i].preprocessed = true;
7303 if (!have_o_argbuf_index)
7304 fatal ("spec '%s' is invalid", input_file_compiler->spec);
7305 infiles[i].name = argbuf[have_o_argbuf_index];
7306 infiles[i].incompiler
7307 = lookup_compiler (infiles[i].name,
7308 strlen (infiles[i].name),
7309 infiles[i].language);
7312 this_file_error = 1;
7316 if (this_file_error)
7318 delete_failure_queue ();
7322 clear_failure_queue ();
7324 combine_inputs = save_combine_inputs;
7327 for (i = 0; (int) i < n_infiles; i++)
7329 int this_file_error = 0;
7331 /* Tell do_spec what to substitute for %i. */
7333 input_file_number = i;
7334 set_input (infiles[i].name);
7336 if (infiles[i].compiled)
7339 /* Use the same thing in %o, unless cp->spec says otherwise. */
7341 outfiles[i] = input_filename;
7343 /* Figure out which compiler from the file's suffix. */
7345 if (! combine_inputs)
7347 = lookup_compiler (infiles[i].name, input_filename_length,
7348 infiles[i].language);
7350 input_file_compiler = infiles[i].incompiler;
7352 if (input_file_compiler)
7354 /* Ok, we found an applicable compiler. Run its spec. */
7356 if (input_file_compiler->spec[0] == '#')
7358 error ("%s: %s compiler not installed on this system",
7359 input_filename, &input_file_compiler->spec[1]);
7360 this_file_error = 1;
7366 if (debug_check_temp_file[0])
7367 free (debug_check_temp_file[0]);
7368 debug_check_temp_file[0] = NULL;
7370 if (debug_check_temp_file[1])
7371 free (debug_check_temp_file[1]);
7372 debug_check_temp_file[1] = NULL;
7375 value = do_spec (input_file_compiler->spec);
7376 infiles[i].compiled = true;
7378 this_file_error = 1;
7379 else if (compare_debug && debug_check_temp_file[0])
7382 error ("Recompiling with -fcompare-debug");
7384 compare_debug = -compare_debug;
7385 n_switches = n_switches_debug_check[1];
7386 switches = switches_debug_check[1];
7388 value = do_spec (input_file_compiler->spec);
7390 compare_debug = -compare_debug;
7391 n_switches = n_switches_debug_check[0];
7392 switches = switches_debug_check[0];
7396 error ("during -fcompare-debug recompilation");
7397 this_file_error = 1;
7400 gcc_assert (debug_check_temp_file[1]
7401 && strcmp (debug_check_temp_file[0],
7402 debug_check_temp_file[1]));
7405 error ("Comparing final insns dumps");
7407 if (compare_files (debug_check_temp_file))
7408 this_file_error = 1;
7413 if (debug_check_temp_file[0])
7414 free (debug_check_temp_file[0]);
7415 debug_check_temp_file[0] = NULL;
7417 if (debug_check_temp_file[1])
7418 free (debug_check_temp_file[1]);
7419 debug_check_temp_file[1] = NULL;
7424 /* If this file's name does not contain a recognized suffix,
7425 record it as explicit linker input. */
7428 explicit_link_files[i] = 1;
7430 /* Clear the delete-on-failure queue, deleting the files in it
7431 if this compilation failed. */
7433 if (this_file_error)
7435 delete_failure_queue ();
7438 /* If this compilation succeeded, don't delete those files later. */
7439 clear_failure_queue ();
7442 /* Reset the input file name to the first compile/object file name, for use
7443 with %b in LINK_SPEC. We use the first input file that we can find
7444 a compiler to compile it instead of using infiles.language since for
7445 languages other than C we use aliases that we then lookup later. */
7450 for (i = 0; i < n_infiles ; i++)
7451 if (infiles[i].language && infiles[i].language[0] != '*')
7453 set_input (infiles[i].name);
7458 if (error_count == 0)
7460 /* Make sure INPUT_FILE_NUMBER points to first available open
7462 input_file_number = n_infiles;
7463 if (lang_specific_pre_link ())
7467 /* Determine if there are any linker input files. */
7468 num_linker_inputs = 0;
7469 for (i = 0; (int) i < n_infiles; i++)
7470 if (explicit_link_files[i] || outfiles[i] != NULL)
7471 num_linker_inputs++;
7473 /* Run ld to link all the compiler output files. */
7475 if (num_linker_inputs > 0 && error_count == 0 && print_subprocess_help < 2)
7477 int tmp = execution_count;
7479 /* We'll use ld if we can't find collect2. */
7480 if (! strcmp (linker_name_spec, "collect2"))
7482 char *s = find_a_file (&exec_prefixes, "collect2", X_OK, false);
7484 linker_name_spec = "ld";
7486 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
7488 putenv_from_prefixes (&exec_prefixes, "COMPILER_PATH", false);
7489 putenv_from_prefixes (&startfile_prefixes, LIBRARY_PATH_ENV, true);
7491 if (print_subprocess_help == 1)
7493 printf (_("\nLinker options\n==============\n\n"));
7494 printf (_("Use \"-Wl,OPTION\" to pass \"OPTION\""
7495 " to the linker.\n\n"));
7498 value = do_spec (link_command_spec);
7501 linker_was_run = (tmp != execution_count);
7504 /* If options said don't run linker,
7505 complain about input files to be given to the linker. */
7507 if (! linker_was_run && error_count == 0)
7508 for (i = 0; (int) i < n_infiles; i++)
7509 if (explicit_link_files[i]
7510 && !(infiles[i].language && infiles[i].language[0] == '*'))
7511 error ("%s: linker input file unused because linking not done",
7514 /* Delete some or all of the temporary files we made. */
7517 delete_failure_queue ();
7518 delete_temp_files ();
7520 if (print_help_list)
7522 printf (("\nFor bug reporting instructions, please see:\n"));
7523 printf ("%s\n", bug_report_url);
7526 return (signal_count != 0 ? 2
7527 : error_count > 0 ? (pass_exit_codes ? greatest_status : 1)
7531 /* Find the proper compilation spec for the file name NAME,
7532 whose length is LENGTH. LANGUAGE is the specified language,
7533 or 0 if this file is to be passed to the linker. */
7535 static struct compiler *
7536 lookup_compiler (const char *name, size_t length, const char *language)
7538 struct compiler *cp;
7540 /* If this was specified by the user to be a linker input, indicate that. */
7541 if (language != 0 && language[0] == '*')
7544 /* Otherwise, look for the language, if one is spec'd. */
7547 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
7548 if (cp->suffix[0] == '@' && !strcmp (cp->suffix + 1, language))
7551 error ("language %s not recognized", language);
7555 /* Look for a suffix. */
7556 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
7558 if (/* The suffix `-' matches only the file name `-'. */
7559 (!strcmp (cp->suffix, "-") && !strcmp (name, "-"))
7560 || (strlen (cp->suffix) < length
7561 /* See if the suffix matches the end of NAME. */
7562 && !strcmp (cp->suffix,
7563 name + length - strlen (cp->suffix))
7568 #if defined (OS2) ||defined (HAVE_DOS_BASED_FILE_SYSTEM)
7569 /* Look again, but case-insensitively this time. */
7571 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
7573 if (/* The suffix `-' matches only the file name `-'. */
7574 (!strcmp (cp->suffix, "-") && !strcmp (name, "-"))
7575 || (strlen (cp->suffix) < length
7576 /* See if the suffix matches the end of NAME. */
7577 && ((!strcmp (cp->suffix,
7578 name + length - strlen (cp->suffix))
7579 || !strpbrk (cp->suffix, "ABCDEFGHIJKLMNOPQRSTUVWXYZ"))
7580 && !strcasecmp (cp->suffix,
7581 name + length - strlen (cp->suffix)))
7587 if (cp >= compilers)
7589 if (cp->spec[0] != '@')
7590 /* A non-alias entry: return it. */
7593 /* An alias entry maps a suffix to a language.
7594 Search for the language; pass 0 for NAME and LENGTH
7595 to avoid infinite recursion if language not found. */
7596 return lookup_compiler (NULL, 0, cp->spec + 1);
7602 save_string (const char *s, int len)
7604 char *result = XNEWVEC (char, len + 1);
7606 memcpy (result, s, len);
7612 pfatal_with_name (const char *name)
7614 perror_with_name (name);
7615 delete_temp_files ();
7620 perror_with_name (const char *name)
7622 error ("%s: %s", name, xstrerror (errno));
7625 /* Output an error message and exit. */
7628 fancy_abort (const char *file, int line, const char *func)
7630 fatal_ice ("internal gcc abort in %s, at %s:%d", func, file, line);
7633 /* Output an error message and exit. */
7636 fatal_ice (const char *cmsgid, ...)
7640 va_start (ap, cmsgid);
7642 fprintf (stderr, "%s: ", programname);
7643 vfprintf (stderr, _(cmsgid), ap);
7645 fprintf (stderr, "\n");
7646 delete_temp_files ();
7647 exit (pass_exit_codes ? ICE_EXIT_CODE : 1);
7651 fatal (const char *cmsgid, ...)
7655 va_start (ap, cmsgid);
7657 fprintf (stderr, "%s: ", programname);
7658 vfprintf (stderr, _(cmsgid), ap);
7660 fprintf (stderr, "\n");
7661 delete_temp_files ();
7665 /* The argument is actually c-format, not gcc-internal-format,
7666 but because functions with identical names are used through
7667 the rest of the compiler with gcc-internal-format, we just
7668 need to hope all users of these functions use the common
7669 subset between c-format and gcc-internal-format. */
7672 error (const char *gmsgid, ...)
7676 va_start (ap, gmsgid);
7677 fprintf (stderr, "%s: ", programname);
7678 vfprintf (stderr, _(gmsgid), ap);
7681 fprintf (stderr, "\n");
7685 notice (const char *cmsgid, ...)
7689 va_start (ap, cmsgid);
7690 vfprintf (stderr, _(cmsgid), ap);
7695 validate_switches_from_spec (const char *spec)
7697 const char *p = spec;
7700 if (c == '%' && (*p == '{' || *p == '<' || (*p == 'W' && *++p == '{')))
7701 /* We have a switch spec. */
7702 p = validate_switches (p + 1);
7706 validate_all_switches (void)
7708 struct compiler *comp;
7709 struct spec_list *spec;
7711 for (comp = compilers; comp->spec; comp++)
7712 validate_switches_from_spec (comp->spec);
7714 /* Look through the linked list of specs read from the specs file. */
7715 for (spec = specs; spec; spec = spec->next)
7716 validate_switches_from_spec (*spec->ptr_spec);
7718 validate_switches_from_spec (link_command_spec);
7721 /* Look at the switch-name that comes after START
7722 and mark as valid all supplied switches that match it. */
7725 validate_switches (const char *start)
7727 const char *p = start;
7731 bool suffix = false;
7732 bool starred = false;
7734 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
7743 if (*p == '.' || *p == ',')
7747 while (ISIDNUM (*p) || *p == '-' || *p == '+' || *p == '='
7748 || *p == ',' || *p == '.' || *p == '@')
7753 starred = true, p++;
7759 /* Mark all matching switches as valid. */
7760 for (i = 0; i < n_switches; i++)
7761 if (!strncmp (switches[i].part1, atom, len)
7762 && (starred || switches[i].part1[len] == 0))
7763 switches[i].validated = 1;
7767 if (*p && (p[-1] == '|' || p[-1] == '&'))
7770 if (*p && p[-1] == ':')
7772 while (*p && *p != ';' && *p != '}')
7777 if (*p == '{' || *p == '<')
7778 p = validate_switches (p+1);
7779 else if (p[0] == 'W' && p[1] == '{')
7780 p = validate_switches (p+2);
7787 if (*p && p[-1] == ';')
7801 static struct mdswitchstr *mdswitches;
7802 static int n_mdswitches;
7804 /* Check whether a particular argument was used. The first time we
7805 canonicalize the switches to keep only the ones we care about. */
7808 used_arg (const char *p, int len)
7813 const char *replace;
7818 static struct mswitchstr *mswitches;
7819 static int n_mswitches;
7824 struct mswitchstr *matches;
7828 /* Break multilib_matches into the component strings of string
7829 and replacement string. */
7830 for (q = multilib_matches; *q != '\0'; q++)
7835 = (struct mswitchstr *) alloca ((sizeof (struct mswitchstr)) * cnt);
7837 q = multilib_matches;
7846 fatal ("multilib spec '%s' is invalid", multilib_matches);
7850 matches[i].len = q - matches[i].str;
7852 matches[i].replace = ++q;
7853 while (*q != ';' && *q != '\0')
7856 goto invalid_matches;
7859 matches[i].rep_len = q - matches[i].replace;
7865 /* Now build a list of the replacement string for switches that we care
7866 about. Make sure we allocate at least one entry. This prevents
7867 xmalloc from calling fatal, and prevents us from re-executing this
7870 = XNEWVEC (struct mswitchstr, n_mdswitches + (n_switches ? n_switches : 1));
7871 for (i = 0; i < n_switches; i++)
7872 if ((switches[i].live_cond & SWITCH_IGNORE) == 0)
7874 int xlen = strlen (switches[i].part1);
7875 for (j = 0; j < cnt; j++)
7876 if (xlen == matches[j].len
7877 && ! strncmp (switches[i].part1, matches[j].str, xlen))
7879 mswitches[n_mswitches].str = matches[j].replace;
7880 mswitches[n_mswitches].len = matches[j].rep_len;
7881 mswitches[n_mswitches].replace = (char *) 0;
7882 mswitches[n_mswitches].rep_len = 0;
7888 /* Add MULTILIB_DEFAULTS switches too, as long as they were not present
7889 on the command line nor any options mutually incompatible with
7891 for (i = 0; i < n_mdswitches; i++)
7895 for (q = multilib_options; *q != '\0'; q++)
7901 while (strncmp (q, mdswitches[i].str, mdswitches[i].len) != 0
7902 || strchr (" /", q[mdswitches[i].len]) == NULL)
7904 while (*q != ' ' && *q != '/' && *q != '\0')
7911 if (*q != ' ' && *q != '\0')
7913 while (*r != ' ' && *r != '\0')
7916 while (*q != ' ' && *q != '/' && *q != '\0')
7919 if (used_arg (r, q - r))
7924 mswitches[n_mswitches].str = mdswitches[i].str;
7925 mswitches[n_mswitches].len = mdswitches[i].len;
7926 mswitches[n_mswitches].replace = (char *) 0;
7927 mswitches[n_mswitches].rep_len = 0;
7940 for (i = 0; i < n_mswitches; i++)
7941 if (len == mswitches[i].len && ! strncmp (p, mswitches[i].str, len))
7948 default_arg (const char *p, int len)
7952 for (i = 0; i < n_mdswitches; i++)
7953 if (len == mdswitches[i].len && ! strncmp (p, mdswitches[i].str, len))
7959 /* Work out the subdirectory to use based on the options. The format of
7960 multilib_select is a list of elements. Each element is a subdirectory
7961 name followed by a list of options followed by a semicolon. The format
7962 of multilib_exclusions is the same, but without the preceding
7963 directory. First gcc will check the exclusions, if none of the options
7964 beginning with an exclamation point are present, and all of the other
7965 options are present, then we will ignore this completely. Passing
7966 that, gcc will consider each multilib_select in turn using the same
7967 rules for matching the options. If a match is found, that subdirectory
7971 set_multilib_dir (void)
7974 unsigned int this_path_len;
7975 const char *this_path, *this_arg;
7976 const char *start, *end;
7978 int ok, ndfltok, first;
7981 start = multilib_defaults;
7982 while (*start == ' ' || *start == '\t')
7984 while (*start != '\0')
7987 while (*start != ' ' && *start != '\t' && *start != '\0')
7989 while (*start == ' ' || *start == '\t')
7997 mdswitches = XNEWVEC (struct mdswitchstr, n_mdswitches);
7998 for (start = multilib_defaults; *start != '\0'; start = end + 1)
8000 while (*start == ' ' || *start == '\t')
8006 for (end = start + 1;
8007 *end != ' ' && *end != '\t' && *end != '\0'; end++)
8010 obstack_grow (&multilib_obstack, start, end - start);
8011 obstack_1grow (&multilib_obstack, 0);
8012 mdswitches[i].str = XOBFINISH (&multilib_obstack, const char *);
8013 mdswitches[i++].len = end - start;
8020 p = multilib_exclusions;
8023 /* Ignore newlines. */
8030 /* Check the arguments. */
8037 fatal ("multilib exclusions '%s' is invalid",
8038 multilib_exclusions);
8048 while (*p != ' ' && *p != ';')
8051 goto invalid_exclusions;
8055 if (*this_arg != '!')
8063 ok = used_arg (this_arg, p - this_arg);
8078 p = multilib_select;
8081 /* Ignore newlines. */
8088 /* Get the initial path. */
8095 fatal ("multilib select '%s' is invalid",
8100 this_path_len = p - this_path;
8102 /* Check the arguments. */
8109 goto invalid_select;
8118 while (*p != ' ' && *p != ';')
8121 goto invalid_select;
8125 if (*this_arg != '!')
8133 /* If this is a default argument, we can just ignore it.
8134 This is true even if this_arg begins with '!'. Beginning
8135 with '!' does not mean that this argument is necessarily
8136 inappropriate for this library: it merely means that
8137 there is a more specific library which uses this
8138 argument. If this argument is a default, we need not
8139 consider that more specific library. */
8140 ok = used_arg (this_arg, p - this_arg);
8147 if (default_arg (this_arg, p - this_arg))
8156 if (this_path_len != 1
8157 || this_path[0] != '.')
8159 char *new_multilib_dir = XNEWVEC (char, this_path_len + 1);
8162 strncpy (new_multilib_dir, this_path, this_path_len);
8163 new_multilib_dir[this_path_len] = '\0';
8164 q = strchr (new_multilib_dir, ':');
8167 multilib_dir = new_multilib_dir;
8174 const char *q = this_path, *end = this_path + this_path_len;
8176 while (q < end && *q != ':')
8180 char *new_multilib_os_dir = XNEWVEC (char, end - q);
8181 memcpy (new_multilib_os_dir, q + 1, end - q - 1);
8182 new_multilib_os_dir[end - q - 1] = '\0';
8183 multilib_os_dir = new_multilib_os_dir;
8191 if (multilib_dir == NULL && multilib_os_dir != NULL
8192 && strcmp (multilib_os_dir, ".") == 0)
8194 free (CONST_CAST (char *, multilib_os_dir));
8195 multilib_os_dir = NULL;
8197 else if (multilib_dir != NULL && multilib_os_dir == NULL)
8198 multilib_os_dir = multilib_dir;
8201 /* Print out the multiple library subdirectory selection
8202 information. This prints out a series of lines. Each line looks
8203 like SUBDIRECTORY;@OPTION@OPTION, with as many options as is
8204 required. Only the desired options are printed out, the negative
8205 matches. The options are print without a leading dash. There are
8206 no spaces to make it easy to use the information in the shell.
8207 Each subdirectory is printed only once. This assumes the ordering
8208 generated by the genmultilib script. Also, we leave out ones that match
8212 print_multilib_info (void)
8214 const char *p = multilib_select;
8215 const char *last_path = 0, *this_path;
8217 unsigned int last_path_len = 0;
8222 /* Ignore newlines. */
8229 /* Get the initial path. */
8236 fatal ("multilib select '%s' is invalid", multilib_select);
8242 /* When --disable-multilib was used but target defines
8243 MULTILIB_OSDIRNAMES, entries starting with .: are there just
8244 to find multilib_os_dir, so skip them from output. */
8245 if (this_path[0] == '.' && this_path[1] == ':')
8248 /* Check for matches with the multilib_exclusions. We don't bother
8249 with the '!' in either list. If any of the exclusion rules match
8250 all of its options with the select rule, we skip it. */
8252 const char *e = multilib_exclusions;
8253 const char *this_arg;
8258 /* Ignore newlines. */
8265 /* Check the arguments. */
8274 fatal ("multilib exclusion '%s' is invalid",
8275 multilib_exclusions);
8286 while (*e != ' ' && *e != ';')
8289 goto invalid_exclusion;
8297 int len = e - this_arg;
8300 goto invalid_select;
8304 while (*q != ' ' && *q != ';')
8307 goto invalid_select;
8311 if (! strncmp (arg, this_arg,
8312 (len < q - arg) ? q - arg : len)
8313 || default_arg (this_arg, e - this_arg))
8343 /* If this is a duplicate, skip it. */
8344 skip = (last_path != 0
8345 && (unsigned int) (p - this_path) == last_path_len
8346 && ! strncmp (last_path, this_path, last_path_len));
8348 last_path = this_path;
8349 last_path_len = p - this_path;
8352 /* If this directory requires any default arguments, we can skip
8353 it. We will already have printed a directory identical to
8354 this one which does not require that default argument. */
8365 goto invalid_select;
8372 while (*q != ' ' && *q != ';')
8375 goto invalid_select;
8380 && default_arg (arg, q - arg))
8395 for (p1 = last_path; p1 < p && *p1 != ':'; p1++)
8406 goto invalid_select;
8414 use_arg = *p != '!';
8419 while (*p != ' ' && *p != ';')
8422 goto invalid_select;
8434 /* If there are extra options, print them now. */
8435 if (multilib_extra && *multilib_extra)
8437 int print_at = TRUE;
8440 for (q = multilib_extra; *q != '\0'; q++)
8461 /* getenv built-in spec function.
8463 Returns the value of the environment variable given by its first
8464 argument, concatenated with the second argument. If the
8465 environment variable is not defined, a fatal error is issued. */
8468 getenv_spec_function (int argc, const char **argv)
8478 value = getenv (argv[0]);
8480 fatal ("environment variable \"%s\" not defined", argv[0]);
8482 /* We have to escape every character of the environment variable so
8483 they are not interpreted as active spec characters. A
8484 particularly painful case is when we are reading a variable
8485 holding a windows path complete with \ separators. */
8486 len = strlen (value) * 2 + strlen (argv[1]) + 1;
8487 result = XNEWVAR (char, len);
8488 for (ptr = result; *value; ptr += 2)
8494 strcpy (ptr, argv[1]);
8499 /* if-exists built-in spec function.
8501 Checks to see if the file specified by the absolute pathname in
8502 ARGS exists. Returns that pathname if found.
8504 The usual use for this function is to check for a library file
8505 (whose name has been expanded with %s). */
8508 if_exists_spec_function (int argc, const char **argv)
8510 /* Must have only one argument. */
8511 if (argc == 1 && IS_ABSOLUTE_PATH (argv[0]) && ! access (argv[0], R_OK))
8517 /* if-exists-else built-in spec function.
8519 This is like if-exists, but takes an additional argument which
8520 is returned if the first argument does not exist. */
8523 if_exists_else_spec_function (int argc, const char **argv)
8525 /* Must have exactly two arguments. */
8529 if (IS_ABSOLUTE_PATH (argv[0]) && ! access (argv[0], R_OK))
8535 /* replace-outfile built-in spec function.
8537 This looks for the first argument in the outfiles array's name and
8538 replaces it with the second argument. */
8541 replace_outfile_spec_function (int argc, const char **argv)
8544 /* Must have exactly two arguments. */
8548 for (i = 0; i < n_infiles; i++)
8550 if (outfiles[i] && !strcmp (outfiles[i], argv[0]))
8551 outfiles[i] = xstrdup (argv[1]);
8556 /* Given two version numbers, compares the two numbers.
8557 A version number must match the regular expression
8558 ([1-9][0-9]*|0)(\.([1-9][0-9]*|0))*
8561 compare_version_strings (const char *v1, const char *v2)
8566 if (regcomp (&r, "^([1-9][0-9]*|0)(\\.([1-9][0-9]*|0))*$",
8567 REG_EXTENDED | REG_NOSUB) != 0)
8569 rresult = regexec (&r, v1, 0, NULL, 0);
8570 if (rresult == REG_NOMATCH)
8571 fatal ("invalid version number `%s'", v1);
8572 else if (rresult != 0)
8574 rresult = regexec (&r, v2, 0, NULL, 0);
8575 if (rresult == REG_NOMATCH)
8576 fatal ("invalid version number `%s'", v2);
8577 else if (rresult != 0)
8580 return strverscmp (v1, v2);
8584 /* version_compare built-in spec function.
8586 This takes an argument of the following form:
8588 <comparison-op> <arg1> [<arg2>] <switch> <result>
8590 and produces "result" if the comparison evaluates to true,
8591 and nothing if it doesn't.
8593 The supported <comparison-op> values are:
8595 >= true if switch is a later (or same) version than arg1
8597 < true if switch is an earlier version than arg1
8599 >< true if switch is arg1 or later, and earlier than arg2
8600 <> true if switch is earlier than arg1 or is arg2 or later
8602 If the switch is not present, the condition is false unless
8603 the first character of the <comparison-op> is '!'.
8606 %:version-compare(>= 10.3 mmacosx-version-min= -lmx)
8607 adds -lmx if -mmacosx-version-min=10.3.9 was passed. */
8610 version_compare_spec_function (int argc, const char **argv)
8614 const char *switch_value = NULL;
8619 fatal ("too few arguments to %%:version-compare");
8620 if (argv[0][0] == '\0')
8622 if ((argv[0][1] == '<' || argv[0][1] == '>') && argv[0][0] != '!')
8624 if (argc != nargs + 3)
8625 fatal ("too many arguments to %%:version-compare");
8627 switch_len = strlen (argv[nargs + 1]);
8628 for (i = 0; i < n_switches; i++)
8629 if (!strncmp (switches[i].part1, argv[nargs + 1], switch_len)
8630 && check_live_switch (i, switch_len))
8631 switch_value = switches[i].part1 + switch_len;
8633 if (switch_value == NULL)
8637 comp1 = compare_version_strings (switch_value, argv[1]);
8639 comp2 = compare_version_strings (switch_value, argv[2]);
8641 comp2 = -1; /* This value unused. */
8644 switch (argv[0][0] << 8 | argv[0][1])
8646 case '>' << 8 | '=':
8647 result = comp1 >= 0;
8649 case '!' << 8 | '<':
8650 result = comp1 >= 0 || switch_value == NULL;
8655 case '!' << 8 | '>':
8656 result = comp1 < 0 || switch_value == NULL;
8658 case '>' << 8 | '<':
8659 result = comp1 >= 0 && comp2 < 0;
8661 case '<' << 8 | '>':
8662 result = comp1 < 0 || comp2 >= 0;
8666 fatal ("unknown operator '%s' in %%:version-compare", argv[0]);
8671 return argv[nargs + 2];
8674 /* %:include builtin spec function. This differs from %include in that it
8675 can be nested inside a spec, and thus be conditionalized. It takes
8676 one argument, the filename, and looks for it in the startfile path.
8677 The result is always NULL, i.e. an empty expansion. */
8680 include_spec_function (int argc, const char **argv)
8687 file = find_a_file (&startfile_prefixes, argv[0], R_OK, true);
8688 read_specs (file ? file : argv[0], FALSE);
8693 /* %:print-asm-header spec function. Print a banner to say that the
8694 following output is from the assembler. */
8697 print_asm_header_spec_function (int arg ATTRIBUTE_UNUSED,
8698 const char **argv ATTRIBUTE_UNUSED)
8700 printf (_("Assembler options\n=================\n\n"));
8701 printf (_("Use \"-Wa,OPTION\" to pass \"OPTION\" to the assembler.\n\n"));
8706 /* Compute a timestamp to initialize flag_random_seed. */
8709 get_local_tick (void)
8713 /* Get some more or less random data. */
8714 #ifdef HAVE_GETTIMEOFDAY
8718 gettimeofday (&tv, NULL);
8719 ret = tv.tv_sec * 1000 + tv.tv_usec / 1000;
8723 time_t now = time (NULL);
8725 if (now != (time_t)-1)
8726 ret = (unsigned) now;
8733 /* %:compare-debug-dump-opt spec function. Save the last argument,
8734 expected to be the last -fdump-final-insns option, or generate a
8738 compare_debug_dump_opt_spec_function (int arg,
8739 const char **argv ATTRIBUTE_UNUSED)
8744 static char random_seed[HOST_BITS_PER_WIDE_INT / 4 + 3];
8747 fatal ("too many arguments to %%:compare-debug-dump-opt");
8749 do_spec_2 ("%{fdump-final-insns=*:%*}");
8750 do_spec_1 (" ", 0, NULL);
8752 if (argbuf_index > 0 && strcmp (argv[argbuf_index - 1], "."))
8757 name = xstrdup (argv[argbuf_index - 1]);
8762 const char *ext = NULL;
8764 if (argbuf_index > 0)
8766 do_spec_2 ("%{o*:%*}%{!o:%{!S:%b%O}%{S:%b.s}}");
8769 else if (!compare_debug)
8772 do_spec_2 ("%g.gkd");
8774 do_spec_1 (" ", 0, NULL);
8776 gcc_assert (argbuf_index > 0);
8778 name = concat (argbuf[argbuf_index - 1], ext, NULL);
8780 ret = concat ("-fdump-final-insns=", name, NULL);
8783 which = compare_debug < 0;
8784 debug_check_temp_file[which] = name;
8788 unsigned HOST_WIDE_INT value = get_local_tick () ^ getpid ();
8790 sprintf (random_seed, HOST_WIDE_INT_PRINT_HEX, value);
8794 ret = concat ("%{!frandom-seed=*:-frandom-seed=", random_seed, "} ",
8803 static const char *debug_auxbase_opt;
8805 /* %:compare-debug-self-opt spec function. Expands to the options
8806 that are to be passed in the second compilation of
8810 compare_debug_self_opt_spec_function (int arg,
8811 const char **argv ATTRIBUTE_UNUSED)
8814 fatal ("too many arguments to %%:compare-debug-self-opt");
8816 if (compare_debug >= 0)
8819 do_spec_2 ("%{c|S:%{o*:%*}}");
8820 do_spec_1 (" ", 0, NULL);
8822 if (argbuf_index > 0)
8823 debug_auxbase_opt = concat ("-auxbase-strip ",
8824 argbuf[argbuf_index - 1],
8827 debug_auxbase_opt = NULL;
8830 %<o %<MD %<MMD %<MF* %<MG %<MP %<MQ* %<MT* \
8831 %<fdump-final-insns=* -w -S -o %j \
8832 %{!fcompare-debug-second:-fcompare-debug-second} \
8833 ", compare_debug_opt, NULL);
8836 /* %:compare-debug-auxbase-opt spec function. Expands to the auxbase
8837 options that are to be passed in the second compilation of
8838 compare-debug. It expects, as an argument, the basename of the
8839 current input file name, with the .gk suffix appended to it. */
8842 compare_debug_auxbase_opt_spec_function (int arg,
8849 fatal ("too few arguments to %%:compare-debug-auxbase-opt");
8852 fatal ("too many arguments to %%:compare-debug-auxbase-opt");
8854 if (compare_debug >= 0)
8857 len = strlen (argv[0]);
8858 if (len < 3 || strcmp (argv[0] + len - 3, ".gk") != 0)
8859 fatal ("argument to %%:compare-debug-auxbase-opt does not end in .gk");
8861 if (debug_auxbase_opt)
8862 return debug_auxbase_opt;
8864 #define OPT "-auxbase "
8867 name = (char*) xmalloc (sizeof (OPT) + len);
8868 memcpy (name, OPT, sizeof (OPT) - 1);
8869 memcpy (name + sizeof (OPT) - 1, argv[0], len);
8870 name[sizeof (OPT) - 1 + len] = '\0';