1 /* Compiler driver program that can handle many languages.
2 Copyright (C) 1987, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
3 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
4 Free Software Foundation, Inc.
6 This file is part of GCC.
8 GCC is free software; you can redistribute it and/or modify it under
9 the terms of the GNU General Public License as published by the Free
10 Software Foundation; either version 3, or (at your option) any later
13 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
14 WARRANTY; without even the implied warranty of MERCHANTABILITY or
15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
18 You should have received a copy of the GNU General Public License
19 along with GCC; see the file COPYING3. If not see
20 <http://www.gnu.org/licenses/>. */
22 /* This program is the user interface to the C compiler and possibly to
23 other compilers. It is used because compilation is a complicated procedure
24 which involves running several programs and passing temporary files between
25 them, forwarding the users switches to those programs selectively,
26 and deleting the temporary files at the end.
28 CC recognizes how to compile each input file by suffixes in the file names.
29 Once it knows which kind of compilation to perform, the procedure for
30 compilation is specified by a string called a "spec". */
32 /* A Short Introduction to Adding a Command-Line Option.
34 Before adding a command-line option, consider if it is really
35 necessary. Each additional command-line option adds complexity and
36 is difficult to remove in subsequent versions.
38 In the following, consider adding the command-line argument
41 1. Each command-line option is specified in the specs file. The
42 notation is described below in the comment entitled "The Specs
45 2. In this file, add an entry to "option_map" equating the long
46 `--' argument version and any shorter, single letter version. Read
47 the comments in the declaration of "struct option_map" for an
48 explanation. Do not omit the first `-'.
50 3. Look in the "specs" file to determine which program or option
51 list should be given the argument, e.g., "cc1_options". Add the
52 appropriate syntax for the shorter option version to the
53 corresponding "const char *" entry in this file. Omit the first
54 `-' from the option. For example, use `-bar', rather than `--bar'.
56 4. If the argument takes an argument, e.g., `--baz argument1',
57 modify either DEFAULT_SWITCH_TAKES_ARG or
58 DEFAULT_WORD_SWITCH_TAKES_ARG in gcc.h. Omit the first `-'
61 5. Document the option in this file's display_help(). If the
62 option is passed to a subprogram, modify its corresponding
63 function, e.g., cppinit.c:print_help() or toplev.c:display_help(),
66 6. Compile and test. Make sure that your new specs file is being
67 read. For example, use a debugger to investigate the value of
68 "specs_file" in main(). */
72 #include "coretypes.h"
73 #include "multilib.h" /* before tm.h */
76 #if ! defined( SIGCHLD ) && defined( SIGCLD )
77 # define SIGCHLD SIGCLD
87 /* By default there is no special suffix for target executables. */
88 /* FIXME: when autoconf is fixed, remove the host check - dj */
89 #if defined(TARGET_EXECUTABLE_SUFFIX) && defined(HOST_EXECUTABLE_SUFFIX)
90 #define HAVE_TARGET_EXECUTABLE_SUFFIX
93 /* By default there is no special suffix for host executables. */
94 #ifdef HOST_EXECUTABLE_SUFFIX
95 #define HAVE_HOST_EXECUTABLE_SUFFIX
97 #define HOST_EXECUTABLE_SUFFIX ""
100 /* By default, the suffix for target object files is ".o". */
101 #ifdef TARGET_OBJECT_SUFFIX
102 #define HAVE_TARGET_OBJECT_SUFFIX
104 #define TARGET_OBJECT_SUFFIX ".o"
107 static const char dir_separator_str[] = { DIR_SEPARATOR, 0 };
109 /* Most every one is fine with LIBRARY_PATH. For some, it conflicts. */
110 #ifndef LIBRARY_PATH_ENV
111 #define LIBRARY_PATH_ENV "LIBRARY_PATH"
115 #define kill(p,s) raise(s)
118 /* If a stage of compilation returns an exit status >= 1,
119 compilation of that file ceases. */
121 #define MIN_FATAL_STATUS 1
123 /* Flag set by cppspec.c to 1. */
126 /* Flag set to nonzero if an @file argument has been supplied to gcc. */
127 static bool at_file_supplied;
129 /* Flag saying to pass the greatest exit code returned by a sub-process
130 to the calling program. */
131 static int pass_exit_codes;
133 /* Definition of string containing the arguments given to configure. */
134 #include "configargs.h"
136 /* Flag saying to print the directories gcc will search through looking for
137 programs, libraries, etc. */
139 static int print_search_dirs;
141 /* Flag saying to print the full filename of this file
142 as found through our usual search mechanism. */
144 static const char *print_file_name = NULL;
146 /* As print_file_name, but search for executable file. */
148 static const char *print_prog_name = NULL;
150 /* Flag saying to print the relative path we'd use to
151 find libgcc.a given the current compiler flags. */
153 static int print_multi_directory;
155 static int print_sysroot;
157 /* Flag saying to print the relative path we'd use to
158 find OS libraries given the current compiler flags. */
160 static int print_multi_os_directory;
162 /* Flag saying to print the list of subdirectories and
163 compiler flags used to select them in a standard form. */
165 static int print_multi_lib;
167 /* Flag saying to print the command line options understood by gcc and its
170 static int print_help_list;
172 /* Flag saying to print the sysroot suffix used for searching for
175 static int print_sysroot_headers_suffix;
177 /* Flag indicating whether we should print the command and arguments */
179 static int verbose_flag;
181 /* Flag indicating whether we should ONLY print the command and
182 arguments (like verbose_flag) without executing the command.
183 Displayed arguments are quoted so that the generated command
184 line is suitable for execution. This is intended for use in
185 shell scripts to capture the driver-generated command line. */
186 static int verbose_only_flag;
188 /* Flag indicating how to print command line options of sub-processes. */
190 static int print_subprocess_help;
192 /* Flag indicating whether we should report subprocess execution times
193 (if this is supported by the system - see pexecute.c). */
195 static int report_times;
197 /* Nonzero means place this string before uses of /, so that include
198 and library files can be found in an alternate location. */
200 #ifdef TARGET_SYSTEM_ROOT
201 static const char *target_system_root = TARGET_SYSTEM_ROOT;
203 static const char *target_system_root = 0;
206 /* Nonzero means pass the updated target_system_root to the compiler. */
208 static int target_system_root_changed;
210 /* Nonzero means append this string to target_system_root. */
212 static const char *target_sysroot_suffix = 0;
214 /* Nonzero means append this string to target_system_root for headers. */
216 static const char *target_sysroot_hdrs_suffix = 0;
218 /* Nonzero means write "temp" files in source directory
219 and use the source file's name in them, and don't delete them. */
221 static int save_temps_flag;
223 /* Nonzero means pass multiple source files to the compiler at one time. */
225 static int combine_flag = 0;
227 /* Nonzero means use pipes to communicate between subprocesses.
228 Overridden by either of the above two flags. */
230 static int use_pipes;
232 /* The compiler version. */
234 static const char *compiler_version;
236 /* The target version specified with -V */
238 static const char *const spec_version = DEFAULT_TARGET_VERSION;
240 /* The target machine specified with -b. */
242 static const char *spec_machine = DEFAULT_TARGET_MACHINE;
244 /* Nonzero if cross-compiling.
245 When -b is used, the value comes from the `specs' file. */
247 #ifdef CROSS_DIRECTORY_STRUCTURE
248 static const char *cross_compile = "1";
250 static const char *cross_compile = "0";
253 #ifdef MODIFY_TARGET_NAME
255 /* Information on how to alter the target name based on a command-line
256 switch. The only case we support now is simply appending or deleting a
257 string to or from the end of the first part of the configuration name. */
259 static const struct modify_target
261 const char *const sw;
262 const enum add_del {ADD, DELETE} add_del;
263 const char *const str;
265 modify_target[] = MODIFY_TARGET_NAME;
268 /* The number of errors that have occurred; the link phase will not be
269 run if this is nonzero. */
270 static int error_count = 0;
272 /* Greatest exit code of sub-processes that has been encountered up to
274 static int greatest_status = 1;
276 /* This is the obstack which we use to allocate many strings. */
278 static struct obstack obstack;
280 /* This is the obstack to build an environment variable to pass to
281 collect2 that describes all of the relevant switches of what to
282 pass the compiler in building the list of pointers to constructors
285 static struct obstack collect_obstack;
287 /* This is a list of a wrapper program and its arguments.
288 e.g. wrapper_string of "strace,-c"
289 will cause all programs to run as
290 strace -c program arguments
293 static const char *wrapper_string;
295 /* Forward declaration for prototypes. */
299 static void init_spec (void);
300 static void store_arg (const char *, int, int);
301 static void insert_wrapper (const char *);
302 static char *load_specs (const char *);
303 static void read_specs (const char *, int);
304 static void set_spec (const char *, const char *);
305 static struct compiler *lookup_compiler (const char *, size_t, const char *);
306 static char *build_search_list (const struct path_prefix *, const char *,
308 static void xputenv (const char *);
309 static void putenv_from_prefixes (const struct path_prefix *, const char *,
311 static int access_check (const char *, int);
312 static char *find_a_file (const struct path_prefix *, const char *, int, bool);
313 static void add_prefix (struct path_prefix *, const char *, const char *,
315 static void add_sysrooted_prefix (struct path_prefix *, const char *,
316 const char *, int, int, int);
317 static void translate_options (int *, const char *const **);
318 static char *skip_whitespace (char *);
319 static void delete_if_ordinary (const char *);
320 static void delete_temp_files (void);
321 static void delete_failure_queue (void);
322 static void clear_failure_queue (void);
323 static int check_live_switch (int, int);
324 static const char *handle_braces (const char *);
325 static inline bool input_suffix_matches (const char *, const char *);
326 static inline bool switch_matches (const char *, const char *, int);
327 static inline void mark_matching_switches (const char *, const char *, int);
328 static inline void process_marked_switches (void);
329 static const char *process_brace_body (const char *, const char *, const char *, int, int);
330 static const struct spec_function *lookup_spec_function (const char *);
331 static const char *eval_spec_function (const char *, const char *);
332 static const char *handle_spec_function (const char *);
333 static char *save_string (const char *, int);
334 static void set_collect_gcc_options (void);
335 static int do_spec_1 (const char *, int, const char *);
336 static int do_spec_2 (const char *);
337 static void do_option_spec (const char *, const char *);
338 static void do_self_spec (const char *);
339 static const char *find_file (const char *);
340 static int is_directory (const char *, bool);
341 static const char *validate_switches (const char *);
342 static void validate_all_switches (void);
343 static inline void validate_switches_from_spec (const char *);
344 static void give_switch (int, int);
345 static int used_arg (const char *, int);
346 static int default_arg (const char *, int);
347 static void set_multilib_dir (void);
348 static void print_multilib_info (void);
349 static void perror_with_name (const char *);
350 static void fatal_ice (const char *, ...) ATTRIBUTE_PRINTF_1 ATTRIBUTE_NORETURN;
351 static void notice (const char *, ...) ATTRIBUTE_PRINTF_1;
352 static void display_help (void);
353 static void add_preprocessor_option (const char *, int);
354 static void add_assembler_option (const char *, int);
355 static void add_linker_option (const char *, int);
356 static void process_command (int, const char **);
357 static int execute (void);
358 static void alloc_args (void);
359 static void clear_args (void);
360 static void fatal_error (int);
361 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
362 static void init_gcc_specs (struct obstack *, const char *, const char *,
365 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
366 static const char *convert_filename (const char *, int, int);
369 static const char *getenv_spec_function (int, const char **);
370 static const char *if_exists_spec_function (int, const char **);
371 static const char *if_exists_else_spec_function (int, const char **);
372 static const char *replace_outfile_spec_function (int, const char **);
373 static const char *version_compare_spec_function (int, const char **);
374 static const char *include_spec_function (int, const char **);
375 static const char *print_asm_header_spec_function (int, const char **);
377 /* The Specs Language
379 Specs are strings containing lines, each of which (if not blank)
380 is made up of a program name, and arguments separated by spaces.
381 The program name must be exact and start from root, since no path
382 is searched and it is unreliable to depend on the current working directory.
383 Redirection of input or output is not supported; the subprograms must
384 accept filenames saying what files to read and write.
386 In addition, the specs can contain %-sequences to substitute variable text
387 or for conditional text. Here is a table of all defined %-sequences.
388 Note that spaces are not generated automatically around the results of
389 expanding these sequences; therefore, you can concatenate them together
390 or with constant text in a single argument.
392 %% substitute one % into the program name or argument.
393 %i substitute the name of the input file being processed.
394 %b substitute the basename of the input file being processed.
395 This is the substring up to (and not including) the last period
396 and not including the directory.
397 %B same as %b, but include the file suffix (text after the last period).
399 substitute a file name that has suffix SUFFIX and is chosen
400 once per compilation, and mark the argument a la %d. To reduce
401 exposure to denial-of-service attacks, the file name is now
402 chosen in a way that is hard to predict even when previously
403 chosen file names are known. For example, `%g.s ... %g.o ... %g.s'
404 might turn into `ccUVUUAU.s ccXYAXZ12.o ccUVUUAU.s'. SUFFIX matches
405 the regexp "[.0-9A-Za-z]*%O"; "%O" is treated exactly as if it
406 had been pre-processed. Previously, %g was simply substituted
407 with a file name chosen once per compilation, without regard
408 to any appended suffix (which was therefore treated just like
409 ordinary text), making such attacks more likely to succeed.
411 like %g, but if -pipe is in effect, expands simply to "-".
413 like %g, but if -pipe is in effect, expands to nothing. (We have both
414 %| and %m to accommodate differences between system assemblers; see
415 the AS_NEEDS_DASH_FOR_PIPED_INPUT target macro.)
417 like %g, but generates a new temporary file name even if %uSUFFIX
420 substitutes the last file name generated with %uSUFFIX, generating a
421 new one if there is no such last file name. In the absence of any
422 %uSUFFIX, this is just like %gSUFFIX, except they don't share
423 the same suffix "space", so `%g.s ... %U.s ... %g.s ... %U.s'
424 would involve the generation of two distinct file names, one
425 for each `%g.s' and another for each `%U.s'. Previously, %U was
426 simply substituted with a file name chosen for the previous %u,
427 without regard to any appended suffix.
429 substitutes the name of the HOST_BIT_BUCKET, if any, and if it is
430 writable, and if save-temps is off; otherwise, substitute the name
431 of a temporary file, just like %u. This temporary file is not
432 meant for communication between processes, but rather as a junk
435 substitutes .SUFFIX for the suffixes of a matched switch's args when
436 it is subsequently output with %*. SUFFIX is terminated by the next
438 %d marks the argument containing or following the %d as a
439 temporary file name, so that that file will be deleted if CC exits
440 successfully. Unlike %g, this contributes no text to the argument.
441 %w marks the argument containing or following the %w as the
442 "output file" of this compilation. This puts the argument
443 into the sequence of arguments that %o will substitute later.
444 %V indicates that this compilation produces no "output file".
446 like %{...} but mark last argument supplied within
447 as a file to be deleted on failure.
448 %o substitutes the names of all the output files, with spaces
449 automatically placed around them. You should write spaces
450 around the %o as well or the results are undefined.
451 %o is for use in the specs for running the linker.
452 Input files whose names have no recognized suffix are not compiled
453 at all, but they are included among the output files, so they will
455 %O substitutes the suffix for object files. Note that this is
456 handled specially when it immediately follows %g, %u, or %U
457 (with or without a suffix argument) because of the need for
458 those to form complete file names. The handling is such that
459 %O is treated exactly as if it had already been substituted,
460 except that %g, %u, and %U do not currently support additional
461 SUFFIX characters following %O as they would following, for
463 %I Substitute any of -iprefix (made from GCC_EXEC_PREFIX), -isysroot
464 (made from TARGET_SYSTEM_ROOT), -isystem (made from COMPILER_PATH
465 and -B options) and -imultilib as necessary.
466 %s current argument is the name of a library or startup file of some sort.
467 Search for that file in a standard list of directories
468 and substitute the full name found.
469 %eSTR Print STR as an error message. STR is terminated by a newline.
470 Use this when inconsistent options are detected.
471 %nSTR Print STR as a notice. STR is terminated by a newline.
472 %x{OPTION} Accumulate an option for %X.
473 %X Output the accumulated linker options specified by compilations.
474 %Y Output the accumulated assembler options specified by compilations.
475 %Z Output the accumulated preprocessor options specified by compilations.
476 %a process ASM_SPEC as a spec.
477 This allows config.h to specify part of the spec for running as.
478 %A process ASM_FINAL_SPEC as a spec. A capital A is actually
479 used here. This can be used to run a post-processor after the
480 assembler has done its job.
481 %D Dump out a -L option for each directory in startfile_prefixes.
482 If multilib_dir is set, extra entries are generated with it affixed.
483 %l process LINK_SPEC as a spec.
484 %L process LIB_SPEC as a spec.
485 %G process LIBGCC_SPEC as a spec.
486 %R Output the concatenation of target_system_root and
487 target_sysroot_suffix.
488 %S process STARTFILE_SPEC as a spec. A capital S is actually used here.
489 %E process ENDFILE_SPEC as a spec. A capital E is actually used here.
490 %C process CPP_SPEC as a spec.
491 %1 process CC1_SPEC as a spec.
492 %2 process CC1PLUS_SPEC as a spec.
493 %* substitute the variable part of a matched option. (See below.)
494 Note that each comma in the substituted string is replaced by
496 %<S remove all occurrences of -S from the command line.
497 Note - this command is position dependent. % commands in the
498 spec string before this one will see -S, % commands in the
499 spec string after this one will not.
500 %<S* remove all occurrences of all switches beginning with -S from the
503 Call the named function FUNCTION, passing it ARGS. ARGS is
504 first processed as a nested spec string, then split into an
505 argument vector in the usual fashion. The function returns
506 a string which is processed as if it had appeared literally
507 as part of the current spec.
508 %{S} substitutes the -S switch, if that switch was given to CC.
509 If that switch was not specified, this substitutes nothing.
510 Here S is a metasyntactic variable.
511 %{S*} substitutes all the switches specified to CC whose names start
512 with -S. This is used for -o, -I, etc; switches that take
513 arguments. CC considers `-o foo' as being one switch whose
514 name starts with `o'. %{o*} would substitute this text,
515 including the space; thus, two arguments would be generated.
516 %{S*&T*} likewise, but preserve order of S and T options (the order
517 of S and T in the spec is not significant). Can be any number
518 of ampersand-separated variables; for each the wild card is
519 optional. Useful for CPP as %{D*&U*&A*}.
521 %{S:X} substitutes X, if the -S switch was given to CC.
522 %{!S:X} substitutes X, if the -S switch was NOT given to CC.
523 %{S*:X} substitutes X if one or more switches whose names start
524 with -S was given to CC. Normally X is substituted only
525 once, no matter how many such switches appeared. However,
526 if %* appears somewhere in X, then X will be substituted
527 once for each matching switch, with the %* replaced by the
528 part of that switch that matched the '*'.
529 %{.S:X} substitutes X, if processing a file with suffix S.
530 %{!.S:X} substitutes X, if NOT processing a file with suffix S.
531 %{,S:X} substitutes X, if processing a file which will use spec S.
532 %{!,S:X} substitutes X, if NOT processing a file which will use spec S.
534 %{S|T:X} substitutes X if either -S or -T was given to CC. This may be
535 combined with '!', '.', ',', and '*' as above binding stronger
537 If %* appears in X, all of the alternatives must be starred, and
538 only the first matching alternative is substituted.
539 %{S:X; if S was given to CC, substitutes X;
540 T:Y; else if T was given to CC, substitutes Y;
541 :D} else substitutes D. There can be as many clauses as you need.
542 This may be combined with '.', '!', ',', '|', and '*' as above.
544 %(Spec) processes a specification defined in a specs file as *Spec:
545 %[Spec] as above, but put __ around -D arguments
547 The conditional text X in a %{S:X} or similar construct may contain
548 other nested % constructs or spaces, or even newlines. They are
549 processed as usual, as described above. Trailing white space in X is
550 ignored. White space may also appear anywhere on the left side of the
551 colon in these constructs, except between . or * and the corresponding
554 The -O, -f, -m, and -W switches are handled specifically in these
555 constructs. If another value of -O or the negated form of a -f, -m, or
556 -W switch is found later in the command line, the earlier switch
557 value is ignored, except with {S*} where S is just one letter; this
558 passes all matching options.
560 The character | at the beginning of the predicate text is used to indicate
561 that a command should be piped to the following command, but only if -pipe
564 Note that it is built into CC which switches take arguments and which
565 do not. You might think it would be useful to generalize this to
566 allow each compiler's spec to say which switches take arguments. But
567 this cannot be done in a consistent fashion. CC cannot even decide
568 which input files have been specified without knowing which switches
569 take arguments, and it must know which input files to compile in order
570 to tell which compilers to run.
572 CC also knows implicitly that arguments starting in `-l' are to be
573 treated as compiler output files, and passed to the linker in their
574 proper position among the other output files. */
576 /* Define the macros used for specs %a, %l, %L, %S, %C, %1. */
578 /* config.h can define ASM_SPEC to provide extra args to the assembler
579 or extra switch-translations. */
584 /* config.h can define ASM_FINAL_SPEC to run a post processor after
585 the assembler has run. */
586 #ifndef ASM_FINAL_SPEC
587 #define ASM_FINAL_SPEC ""
590 /* config.h can define CPP_SPEC to provide extra args to the C preprocessor
591 or extra switch-translations. */
596 /* config.h can define CC1_SPEC to provide extra args to cc1 and cc1plus
597 or extra switch-translations. */
602 /* config.h can define CC1PLUS_SPEC to provide extra args to cc1plus
603 or extra switch-translations. */
605 #define CC1PLUS_SPEC ""
608 /* config.h can define LINK_SPEC to provide extra args to the linker
609 or extra switch-translations. */
614 /* config.h can define LIB_SPEC to override the default libraries. */
616 #define LIB_SPEC "%{!shared:%{g*:-lg} %{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p}}"
621 /* XXX: valid only for GNU ld */
622 /* XXX: should exactly match hooks provided by libmudflap.a */
623 #define MFWRAP_SPEC " %{static: %{fmudflap|fmudflapth: \
624 --wrap=malloc --wrap=free --wrap=calloc --wrap=realloc\
625 --wrap=mmap --wrap=munmap --wrap=alloca\
626 } %{fmudflapth: --wrap=pthread_create\
627 }} %{fmudflap|fmudflapth: --wrap=main}"
630 #define MFLIB_SPEC "%{fmudflap|fmudflapth: -export-dynamic}"
633 /* config.h can define LIBGCC_SPEC to override how and when libgcc.a is
636 #if defined(REAL_LIBGCC_SPEC)
637 #define LIBGCC_SPEC REAL_LIBGCC_SPEC
638 #elif defined(LINK_LIBGCC_SPECIAL_1)
639 /* Have gcc do the search for libgcc.a. */
640 #define LIBGCC_SPEC "libgcc.a%s"
642 #define LIBGCC_SPEC "-lgcc"
646 /* config.h can define STARTFILE_SPEC to override the default crt0 files. */
647 #ifndef STARTFILE_SPEC
648 #define STARTFILE_SPEC \
649 "%{!shared:%{pg:gcrt0%O%s}%{!pg:%{p:mcrt0%O%s}%{!p:crt0%O%s}}}"
652 /* config.h can define SWITCHES_NEED_SPACES to control which options
653 require spaces between the option and the argument. */
654 #ifndef SWITCHES_NEED_SPACES
655 #define SWITCHES_NEED_SPACES ""
658 /* config.h can define ENDFILE_SPEC to override the default crtn files. */
660 #define ENDFILE_SPEC ""
664 #define LINKER_NAME "collect2"
667 #ifdef HAVE_AS_DEBUG_PREFIX_MAP
668 #define ASM_MAP " %{fdebug-prefix-map=*:--debug-prefix-map %*}"
673 /* Define ASM_DEBUG_SPEC to be a spec suitable for translating '-g'
675 #ifndef ASM_DEBUG_SPEC
676 # if defined(DBX_DEBUGGING_INFO) && defined(DWARF2_DEBUGGING_INFO) \
677 && defined(HAVE_AS_GDWARF2_DEBUG_FLAG) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
678 # define ASM_DEBUG_SPEC \
679 (PREFERRED_DEBUGGING_TYPE == DBX_DEBUG \
680 ? "%{!g0:%{gdwarf-2*:--gdwarf2}%{!gdwarf-2*:%{g*:--gstabs}}}" ASM_MAP \
681 : "%{!g0:%{gstabs*:--gstabs}%{!gstabs*:%{g*:--gdwarf2}}}" ASM_MAP)
683 # if defined(DBX_DEBUGGING_INFO) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
684 # define ASM_DEBUG_SPEC "%{g*:%{!g0:--gstabs}}" ASM_MAP
686 # if defined(DWARF2_DEBUGGING_INFO) && defined(HAVE_AS_GDWARF2_DEBUG_FLAG)
687 # define ASM_DEBUG_SPEC "%{g*:%{!g0:--gdwarf2}}" ASM_MAP
691 #ifndef ASM_DEBUG_SPEC
692 # define ASM_DEBUG_SPEC ""
695 /* Here is the spec for running the linker, after compiling all files. */
697 /* This is overridable by the target in case they need to specify the
698 -lgcc and -lc order specially, yet not require them to override all
699 of LINK_COMMAND_SPEC. */
700 #ifndef LINK_GCC_C_SEQUENCE_SPEC
701 #define LINK_GCC_C_SEQUENCE_SPEC "%G %L %G"
704 #ifndef LINK_SSP_SPEC
705 #ifdef TARGET_LIBC_PROVIDES_SSP
706 #define LINK_SSP_SPEC "%{fstack-protector:}"
708 #define LINK_SSP_SPEC "%{fstack-protector|fstack-protector-all:-lssp_nonshared -lssp}"
712 #ifndef LINK_PIE_SPEC
714 #define LINK_PIE_SPEC "%{pie:-pie} "
716 #define LINK_PIE_SPEC "%{pie:} "
720 /* -u* was put back because both BSD and SysV seem to support it. */
721 /* %{static:} simply prevents an error message if the target machine
722 doesn't handle -static. */
723 /* We want %{T*} after %{L*} and %D so that it can be used to specify linker
724 scripts which exist in user specified directories, or in standard
726 #ifndef LINK_COMMAND_SPEC
727 #define LINK_COMMAND_SPEC "\
728 %{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:\
729 %(linker) %l " LINK_PIE_SPEC "%X %{o*} %{A} %{d} %{e*} %{m} %{N} %{n} %{r}\
730 %{s} %{t} %{u*} %{x} %{z} %{Z} %{!A:%{!nostdlib:%{!nostartfiles:%S}}}\
731 %{static:} %{L*} %(mfwrap) %(link_libgcc) %o\
732 %{fopenmp|ftree-parallelize-loops=*:%:include(libgomp.spec)%(link_gomp)} %(mflib)\
733 %{fprofile-arcs|fprofile-generate|coverage:-lgcov}\
734 %{!nostdlib:%{!nodefaultlibs:%(link_ssp) %(link_gcc_c_sequence)}}\
735 %{!A:%{!nostdlib:%{!nostartfiles:%E}}} %{T*} }}}}}}"
738 #ifndef LINK_LIBGCC_SPEC
739 /* Generate -L options for startfile prefix list. */
740 # define LINK_LIBGCC_SPEC "%D"
743 #ifndef STARTFILE_PREFIX_SPEC
744 # define STARTFILE_PREFIX_SPEC ""
748 # define SYSROOT_SPEC "--sysroot=%R"
751 #ifndef SYSROOT_SUFFIX_SPEC
752 # define SYSROOT_SUFFIX_SPEC ""
755 #ifndef SYSROOT_HEADERS_SUFFIX_SPEC
756 # define SYSROOT_HEADERS_SUFFIX_SPEC ""
759 static const char *asm_debug;
760 static const char *cpp_spec = CPP_SPEC;
761 static const char *cc1_spec = CC1_SPEC;
762 static const char *cc1plus_spec = CC1PLUS_SPEC;
763 static const char *link_gcc_c_sequence_spec = LINK_GCC_C_SEQUENCE_SPEC;
764 static const char *link_ssp_spec = LINK_SSP_SPEC;
765 static const char *asm_spec = ASM_SPEC;
766 static const char *asm_final_spec = ASM_FINAL_SPEC;
767 static const char *link_spec = LINK_SPEC;
768 static const char *lib_spec = LIB_SPEC;
769 static const char *mfwrap_spec = MFWRAP_SPEC;
770 static const char *mflib_spec = MFLIB_SPEC;
771 static const char *link_gomp_spec = "";
772 static const char *libgcc_spec = LIBGCC_SPEC;
773 static const char *endfile_spec = ENDFILE_SPEC;
774 static const char *startfile_spec = STARTFILE_SPEC;
775 static const char *switches_need_spaces = SWITCHES_NEED_SPACES;
776 static const char *linker_name_spec = LINKER_NAME;
777 static const char *link_command_spec = LINK_COMMAND_SPEC;
778 static const char *link_libgcc_spec = LINK_LIBGCC_SPEC;
779 static const char *startfile_prefix_spec = STARTFILE_PREFIX_SPEC;
780 static const char *sysroot_spec = SYSROOT_SPEC;
781 static const char *sysroot_suffix_spec = SYSROOT_SUFFIX_SPEC;
782 static const char *sysroot_hdrs_suffix_spec = SYSROOT_HEADERS_SUFFIX_SPEC;
784 /* Standard options to cpp, cc1, and as, to reduce duplication in specs.
785 There should be no need to override these in target dependent files,
786 but we need to copy them to the specs file so that newer versions
787 of the GCC driver can correctly drive older tool chains with the
788 appropriate -B options. */
790 /* When cpplib handles traditional preprocessing, get rid of this, and
791 call cc1 (or cc1obj in objc/lang-specs.h) from the main specs so
792 that we default the front end language better. */
793 static const char *trad_capable_cpp =
794 "cc1 -E %{traditional|ftraditional|traditional-cpp:-traditional-cpp}";
796 /* We don't wrap .d files in %W{} since a missing .d file, and
797 therefore no dependency entry, confuses make into thinking a .o
798 file that happens to exist is up-to-date. */
799 static const char *cpp_unique_options =
800 "%{C|CC:%{!E:%eGCC does not support -C or -CC without -E}}\
801 %{!Q:-quiet} %{nostdinc*} %{C} %{CC} %{v} %{I*&F*} %{P} %I\
802 %{MD:-MD %{!o:%b.d}%{o*:%.d%*}}\
803 %{MMD:-MMD %{!o:%b.d}%{o*:%.d%*}}\
804 %{M} %{MM} %{MF*} %{MG} %{MP} %{MQ*} %{MT*}\
805 %{!E:%{!M:%{!MM:%{!MT:%{!MQ:%{MD|MMD:%{o*:-MQ %*}}}}}}}\
806 %{remap} %{g3|ggdb3|gstabs3|gcoff3|gxcoff3|gvms3:-dD}\
807 %{H} %C %{D*&U*&A*} %{i*} %Z %i\
808 %{fmudflap:-D_MUDFLAP -include mf-runtime.h}\
809 %{fmudflapth:-D_MUDFLAP -D_MUDFLAPTH -include mf-runtime.h}\
812 /* This contains cpp options which are common with cc1_options and are passed
813 only when preprocessing only to avoid duplication. We pass the cc1 spec
814 options to the preprocessor so that it the cc1 spec may manipulate
815 options used to set target flags. Those special target flags settings may
816 in turn cause preprocessor symbols to be defined specially. */
817 static const char *cpp_options =
818 "%(cpp_unique_options) %1 %{m*} %{std*&ansi&trigraphs} %{W*&pedantic*} %{w}\
819 %{f*} %{g*:%{!g0:%{g*} %{!fno-working-directory:-fworking-directory}}} %{O*}\
820 %{undef} %{save-temps:-fpch-preprocess}";
822 /* This contains cpp options which are not passed when the preprocessor
823 output will be used by another program. */
824 static const char *cpp_debug_options = "%{d*}";
826 /* NB: This is shared amongst all front-ends, except for Ada. */
827 static const char *cc1_options =
828 "%{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\
829 %1 %{!Q:-quiet} -dumpbase %B %{d*} %{m*} %{a*}\
830 %{c|S:%{o*:-auxbase-strip %*}%{!o*:-auxbase %b}}%{!c:%{!S:-auxbase %b}}\
831 %{g*} %{O*} %{W*&pedantic*} %{w} %{std*&ansi&trigraphs}\
832 %{v:-version} %{pg:-p} %{p} %{f*} %{undef}\
833 %{Qn:-fno-ident} %{--help:--help}\
834 %{--target-help:--target-help}\
835 %{--help=*:--help=%(VALUE)}\
836 %{!fsyntax-only:%{S:%W{o*}%{!o*:-o %b.s}}}\
837 %{fsyntax-only:-o %j} %{-param*}\
838 %{fmudflap|fmudflapth:-fno-builtin -fno-merge-constants}\
839 %{coverage:-fprofile-arcs -ftest-coverage}";
841 static const char *asm_options =
842 "%{--target-help:%:print-asm-header()} "
844 /* If GNU AS is used, then convert -w (no warnings), -I, and -v
845 to the assembler equivalents. */
846 "%{v} %{w:-W} %{I*} "
848 "%a %Y %{c:%W{o*}%{!o*:-o %w%b%O}}%{!c:-o %d%w%u%O}";
850 static const char *invoke_as =
851 #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT
852 "%{!S:-o %|.s |\n as %(asm_options) %|.s %A }";
854 "%{!S:-o %|.s |\n as %(asm_options) %m.s %A }";
857 /* Some compilers have limits on line lengths, and the multilib_select
858 and/or multilib_matches strings can be very long, so we build them at
860 static struct obstack multilib_obstack;
861 static const char *multilib_select;
862 static const char *multilib_matches;
863 static const char *multilib_defaults;
864 static const char *multilib_exclusions;
866 /* Check whether a particular argument is a default argument. */
868 #ifndef MULTILIB_DEFAULTS
869 #define MULTILIB_DEFAULTS { "" }
872 static const char *const multilib_defaults_raw[] = MULTILIB_DEFAULTS;
874 #ifndef DRIVER_SELF_SPECS
875 #define DRIVER_SELF_SPECS ""
878 /* Adding -fopenmp should imply pthreads. This is particularly important
879 for targets that use different start files and suchlike. */
880 #ifndef GOMP_SELF_SPECS
881 #define GOMP_SELF_SPECS "%{fopenmp|ftree-parallelize-loops=*: -pthread}"
884 static const char *const driver_self_specs[] = {
885 DRIVER_SELF_SPECS, GOMP_SELF_SPECS
888 #ifndef OPTION_DEFAULT_SPECS
889 #define OPTION_DEFAULT_SPECS { "", "" }
898 static const struct default_spec
899 option_default_specs[] = { OPTION_DEFAULT_SPECS };
903 struct user_specs *next;
904 const char *filename;
907 static struct user_specs *user_specs_head, *user_specs_tail;
909 #ifndef SWITCH_TAKES_ARG
910 #define SWITCH_TAKES_ARG(CHAR) DEFAULT_SWITCH_TAKES_ARG(CHAR)
913 #ifndef WORD_SWITCH_TAKES_ARG
914 #define WORD_SWITCH_TAKES_ARG(STR) DEFAULT_WORD_SWITCH_TAKES_ARG (STR)
917 #ifdef HAVE_TARGET_EXECUTABLE_SUFFIX
918 /* This defines which switches stop a full compilation. */
919 #define DEFAULT_SWITCH_CURTAILS_COMPILATION(CHAR) \
920 ((CHAR) == 'c' || (CHAR) == 'S')
922 #ifndef SWITCH_CURTAILS_COMPILATION
923 #define SWITCH_CURTAILS_COMPILATION(CHAR) \
924 DEFAULT_SWITCH_CURTAILS_COMPILATION(CHAR)
928 /* Record the mapping from file suffixes for compilation specs. */
932 const char *suffix; /* Use this compiler for input files
933 whose names end in this suffix. */
935 const char *spec; /* To use this compiler, run this spec. */
937 const char *cpp_spec; /* If non-NULL, substitute this spec
938 for `%C', rather than the usual
940 const int combinable; /* If nonzero, compiler can deal with
941 multiple source files at once (IMA). */
942 const int needs_preprocessing; /* If nonzero, source files need to
943 be run through a preprocessor. */
946 /* Pointer to a vector of `struct compiler' that gives the spec for
947 compiling a file, based on its suffix.
948 A file that does not end in any of these suffixes will be passed
949 unchanged to the loader and nothing else will be done to it.
951 An entry containing two 0s is used to terminate the vector.
953 If multiple entries match a file, the last matching one is used. */
955 static struct compiler *compilers;
957 /* Number of entries in `compilers', not counting the null terminator. */
959 static int n_compilers;
961 /* The default list of file name suffixes and their compilation specs. */
963 static const struct compiler default_compilers[] =
965 /* Add lists of suffixes of known languages here. If those languages
966 were not present when we built the driver, we will hit these copies
967 and be given a more meaningful error than "file not used since
968 linking is not done". */
969 {".m", "#Objective-C", 0, 0, 0}, {".mi", "#Objective-C", 0, 0, 0},
970 {".mm", "#Objective-C++", 0, 0, 0}, {".M", "#Objective-C++", 0, 0, 0},
971 {".mii", "#Objective-C++", 0, 0, 0},
972 {".cc", "#C++", 0, 0, 0}, {".cxx", "#C++", 0, 0, 0},
973 {".cpp", "#C++", 0, 0, 0}, {".cp", "#C++", 0, 0, 0},
974 {".c++", "#C++", 0, 0, 0}, {".C", "#C++", 0, 0, 0},
975 {".CPP", "#C++", 0, 0, 0}, {".ii", "#C++", 0, 0, 0},
976 {".ads", "#Ada", 0, 0, 0}, {".adb", "#Ada", 0, 0, 0},
977 {".f", "#Fortran", 0, 0, 0}, {".F", "#Fortran", 0, 0, 0},
978 {".for", "#Fortran", 0, 0, 0}, {".FOR", "#Fortran", 0, 0, 0},
979 {".ftn", "#Fortran", 0, 0, 0}, {".FTN", "#Fortran", 0, 0, 0},
980 {".fpp", "#Fortran", 0, 0, 0}, {".FPP", "#Fortran", 0, 0, 0},
981 {".f90", "#Fortran", 0, 0, 0}, {".F90", "#Fortran", 0, 0, 0},
982 {".f95", "#Fortran", 0, 0, 0}, {".F95", "#Fortran", 0, 0, 0},
983 {".f03", "#Fortran", 0, 0, 0}, {".F03", "#Fortran", 0, 0, 0},
984 {".f08", "#Fortran", 0, 0, 0}, {".F08", "#Fortran", 0, 0, 0},
985 {".r", "#Ratfor", 0, 0, 0},
986 {".p", "#Pascal", 0, 0, 0}, {".pas", "#Pascal", 0, 0, 0},
987 {".java", "#Java", 0, 0, 0}, {".class", "#Java", 0, 0, 0},
988 {".zip", "#Java", 0, 0, 0}, {".jar", "#Java", 0, 0, 0},
989 /* Next come the entries for C. */
990 {".c", "@c", 0, 1, 1},
992 /* cc1 has an integrated ISO C preprocessor. We should invoke the
993 external preprocessor if -save-temps is given. */
994 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\
996 %{traditional|ftraditional:\
997 %eGNU C no longer supports -traditional without -E}\
999 %{save-temps|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
1000 %(cpp_options) -o %{save-temps:%b.i} %{!save-temps:%g.i} \n\
1001 cc1 -fpreprocessed %{save-temps:%b.i} %{!save-temps:%g.i} \
1003 %{!save-temps:%{!traditional-cpp:%{!no-integrated-cpp:\
1004 cc1 %(cpp_unique_options) %(cc1_options)}}}\
1005 %{!fsyntax-only:%(invoke_as)}} \
1007 %{save-temps|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
1008 %(cpp_options) -o %{save-temps:%b.i} %{!save-temps:%g.i}}\
1009 %{!save-temps:%{!traditional-cpp:%{!no-integrated-cpp:\
1010 cc1 %(cpp_unique_options) %(cc1_options)}}\
1011 %{!fsyntax-only:%(invoke_as)}}}}}}", 0, 1, 1},
1013 "%{!E:%e-E or -x required when input is from standard input}\
1014 %(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)", 0, 0, 0},
1015 {".h", "@c-header", 0, 0, 0},
1017 /* cc1 has an integrated ISO C preprocessor. We should invoke the
1018 external preprocessor if -save-temps is given. */
1019 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\
1021 %{save-temps|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
1022 %(cpp_options) -o %{save-temps:%b.i} %{!save-temps:%g.i} \n\
1023 cc1 -fpreprocessed %{save-temps:%b.i} %{!save-temps:%g.i} \
1025 -o %g.s %{!o*:--output-pch=%i.gch}\
1026 %W{o*:--output-pch=%*}%V}\
1027 %{!save-temps:%{!traditional-cpp:%{!no-integrated-cpp:\
1028 cc1 %(cpp_unique_options) %(cc1_options)\
1029 -o %g.s %{!o*:--output-pch=%i.gch}\
1030 %W{o*:--output-pch=%*}%V}}}}}}", 0, 0, 0},
1031 {".i", "@cpp-output", 0, 1, 0},
1033 "%{!M:%{!MM:%{!E:cc1 -fpreprocessed %i %(cc1_options) %{!fsyntax-only:%(invoke_as)}}}}", 0, 1, 0},
1034 {".s", "@assembler", 0, 1, 0},
1036 "%{!M:%{!MM:%{!E:%{!S:as %(asm_debug) %(asm_options) %i %A }}}}", 0, 1, 0},
1037 {".sx", "@assembler-with-cpp", 0, 1, 0},
1038 {".S", "@assembler-with-cpp", 0, 1, 0},
1039 {"@assembler-with-cpp",
1040 #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT
1041 "%(trad_capable_cpp) -lang-asm %(cpp_options) -fno-directives-only\
1042 %{E|M|MM:%(cpp_debug_options)}\
1043 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\
1044 as %(asm_debug) %(asm_options) %|.s %A }}}}"
1046 "%(trad_capable_cpp) -lang-asm %(cpp_options) -fno-directives-only\
1047 %{E|M|MM:%(cpp_debug_options)}\
1048 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\
1049 as %(asm_debug) %(asm_options) %m.s %A }}}}"
1054 /* Mark end of table. */
1058 /* Number of elements in default_compilers, not counting the terminator. */
1060 static const int n_default_compilers = ARRAY_SIZE (default_compilers) - 1;
1062 /* A vector of options to give to the linker.
1063 These options are accumulated by %x,
1064 and substituted into the linker command with %X. */
1065 static int n_linker_options;
1066 static char **linker_options;
1068 /* A vector of options to give to the assembler.
1069 These options are accumulated by -Wa,
1070 and substituted into the assembler command with %Y. */
1071 static int n_assembler_options;
1072 static char **assembler_options;
1074 /* A vector of options to give to the preprocessor.
1075 These options are accumulated by -Wp,
1076 and substituted into the preprocessor command with %Z. */
1077 static int n_preprocessor_options;
1078 static char **preprocessor_options;
1080 /* Define how to map long options into short ones. */
1082 /* This structure describes one mapping. */
1085 /* The long option's name. */
1086 const char *const name;
1087 /* The equivalent short option. */
1088 const char *const equivalent;
1089 /* Argument info. A string of flag chars; NULL equals no options.
1090 a => argument required.
1091 o => argument optional.
1092 j => join argument to equivalent, making one word.
1093 * => require other text after NAME as an argument. */
1094 const char *const arg_info;
1097 /* This is the table of mappings. Mappings are tried sequentially
1098 for each option encountered; the first one that matches, wins. */
1100 static const struct option_map option_map[] =
1102 {"--all-warnings", "-Wall", 0},
1103 {"--ansi", "-ansi", 0},
1104 {"--assemble", "-S", 0},
1105 {"--assert", "-A", "a"},
1106 {"--classpath", "-fclasspath=", "aj"},
1107 {"--bootclasspath", "-fbootclasspath=", "aj"},
1108 {"--CLASSPATH", "-fclasspath=", "aj"},
1109 {"--combine", "-combine", 0},
1110 {"--comments", "-C", 0},
1111 {"--comments-in-macros", "-CC", 0},
1112 {"--compile", "-c", 0},
1113 {"--debug", "-g", "oj"},
1114 {"--define-macro", "-D", "aj"},
1115 {"--dependencies", "-M", 0},
1116 {"--dump", "-d", "a"},
1117 {"--dumpbase", "-dumpbase", "a"},
1118 {"--encoding", "-fencoding=", "aj"},
1119 {"--entry", "-e", 0},
1120 {"--extra-warnings", "-W", 0},
1121 {"--extdirs", "-fextdirs=", "aj"},
1122 {"--for-assembler", "-Wa", "a"},
1123 {"--for-linker", "-Xlinker", "a"},
1124 {"--force-link", "-u", "a"},
1125 {"--coverage", "-coverage", 0},
1126 {"--imacros", "-imacros", "a"},
1127 {"--include", "-include", "a"},
1128 {"--include-barrier", "-I-", 0},
1129 {"--include-directory", "-I", "aj"},
1130 {"--include-directory-after", "-idirafter", "a"},
1131 {"--include-prefix", "-iprefix", "a"},
1132 {"--include-with-prefix", "-iwithprefix", "a"},
1133 {"--include-with-prefix-before", "-iwithprefixbefore", "a"},
1134 {"--include-with-prefix-after", "-iwithprefix", "a"},
1135 {"--language", "-x", "a"},
1136 {"--library-directory", "-L", "a"},
1137 {"--machine", "-m", "aj"},
1138 {"--machine-", "-m", "*j"},
1139 {"--no-integrated-cpp", "-no-integrated-cpp", 0},
1140 {"--no-line-commands", "-P", 0},
1141 {"--no-precompiled-includes", "-noprecomp", 0},
1142 {"--no-standard-includes", "-nostdinc", 0},
1143 {"--no-standard-libraries", "-nostdlib", 0},
1144 {"--no-warnings", "-w", 0},
1145 {"--optimize", "-O", "oj"},
1146 {"--output", "-o", "a"},
1147 {"--output-class-directory", "-foutput-class-dir=", "ja"},
1148 {"--param", "--param", "a"},
1149 {"--pass-exit-codes", "-pass-exit-codes", 0},
1150 {"--pedantic", "-pedantic", 0},
1151 {"--pedantic-errors", "-pedantic-errors", 0},
1152 {"--pie", "-pie", 0},
1153 {"--pipe", "-pipe", 0},
1154 {"--prefix", "-B", "a"},
1155 {"--preprocess", "-E", 0},
1156 {"--print-search-dirs", "-print-search-dirs", 0},
1157 {"--print-file-name", "-print-file-name=", "aj"},
1158 {"--print-libgcc-file-name", "-print-libgcc-file-name", 0},
1159 {"--print-missing-file-dependencies", "-MG", 0},
1160 {"--print-multi-lib", "-print-multi-lib", 0},
1161 {"--print-multi-directory", "-print-multi-directory", 0},
1162 {"--print-multi-os-directory", "-print-multi-os-directory", 0},
1163 {"--print-prog-name", "-print-prog-name=", "aj"},
1164 {"--print-sysroot", "-print-sysroot", 0},
1165 {"--print-sysroot-headers-suffix", "-print-sysroot-headers-suffix", 0},
1166 {"--profile", "-p", 0},
1167 {"--profile-blocks", "-a", 0},
1168 {"--quiet", "-q", 0},
1169 {"--resource", "-fcompile-resource=", "aj"},
1170 {"--save-temps", "-save-temps", 0},
1171 {"--shared", "-shared", 0},
1172 {"--silent", "-q", 0},
1173 {"--specs", "-specs=", "aj"},
1174 {"--static", "-static", 0},
1175 {"--std", "-std=", "aj"},
1176 {"--symbolic", "-symbolic", 0},
1177 {"--sysroot", "--sysroot=", "aj"},
1178 {"--time", "-time", 0},
1179 {"--trace-includes", "-H", 0},
1180 {"--traditional", "-traditional", 0},
1181 {"--traditional-cpp", "-traditional-cpp", 0},
1182 {"--trigraphs", "-trigraphs", 0},
1183 {"--undefine-macro", "-U", "aj"},
1184 {"--user-dependencies", "-MM", 0},
1185 {"--verbose", "-v", 0},
1186 {"--warn-", "-W", "*j"},
1187 {"--write-dependencies", "-MD", 0},
1188 {"--write-user-dependencies", "-MMD", 0},
1193 #ifdef TARGET_OPTION_TRANSLATE_TABLE
1194 static const struct {
1195 const char *const option_found;
1196 const char *const replacements;
1197 } target_option_translations[] =
1199 TARGET_OPTION_TRANSLATE_TABLE,
1204 /* Translate the options described by *ARGCP and *ARGVP.
1205 Make a new vector and store it back in *ARGVP,
1206 and store its length in *ARGCP. */
1209 translate_options (int *argcp, const char *const **argvp)
1213 const char *const *argv = *argvp;
1214 int newvsize = (argc + 2) * 2 * sizeof (const char *);
1215 const char **newv = XNEWVAR (const char *, newvsize);
1219 newv[newindex++] = argv[i++];
1223 #ifdef TARGET_OPTION_TRANSLATE_TABLE
1227 target_option_translations[tott_idx].option_found;
1230 if (strcmp (target_option_translations[tott_idx].option_found,
1237 for (sp = target_option_translations[tott_idx].replacements;
1244 newvsize += spaces * sizeof (const char *);
1245 newv = XRESIZEVAR (const char *, newv, newvsize);
1247 sp = target_option_translations[tott_idx].replacements;
1256 newv[newindex++] = np;
1257 while (*np != ' ' && *np)
1268 if (target_option_translations[tott_idx].option_found)
1272 /* Translate -- options. */
1273 if (argv[i][0] == '-' && argv[i][1] == '-')
1276 /* Find a mapping that applies to this option. */
1277 for (j = 0; j < ARRAY_SIZE (option_map); j++)
1279 size_t optlen = strlen (option_map[j].name);
1280 size_t arglen = strlen (argv[i]);
1281 size_t complen = arglen > optlen ? optlen : arglen;
1282 const char *arginfo = option_map[j].arg_info;
1287 if (!strncmp (argv[i], option_map[j].name, complen))
1289 const char *arg = 0;
1291 if (arglen < optlen)
1294 for (k = j + 1; k < ARRAY_SIZE (option_map); k++)
1295 if (strlen (option_map[k].name) >= arglen
1296 && !strncmp (argv[i], option_map[k].name, arglen))
1298 error ("ambiguous abbreviation %s", argv[i]);
1302 if (k != ARRAY_SIZE (option_map))
1306 if (arglen > optlen)
1308 /* If the option has an argument, accept that. */
1309 if (argv[i][optlen] == '=')
1310 arg = argv[i] + optlen + 1;
1312 /* If this mapping requires extra text at end of name,
1313 accept that as "argument". */
1314 else if (strchr (arginfo, '*') != 0)
1315 arg = argv[i] + optlen;
1317 /* Otherwise, extra text at end means mismatch.
1318 Try other mappings. */
1323 else if (strchr (arginfo, '*') != 0)
1325 error ("incomplete '%s' option", option_map[j].name);
1329 /* Handle arguments. */
1330 if (strchr (arginfo, 'a') != 0)
1336 error ("missing argument to '%s' option",
1337 option_map[j].name);
1344 else if (strchr (arginfo, '*') != 0)
1346 else if (strchr (arginfo, 'o') == 0)
1349 error ("extraneous argument to '%s' option",
1350 option_map[j].name);
1354 /* Store the translation as one argv elt or as two. */
1355 if (arg != 0 && strchr (arginfo, 'j') != 0)
1356 newv[newindex++] = concat (option_map[j].equivalent, arg,
1360 newv[newindex++] = option_map[j].equivalent;
1361 newv[newindex++] = arg;
1364 newv[newindex++] = option_map[j].equivalent;
1372 /* Handle old-fashioned options--just copy them through,
1373 with their arguments. */
1374 else if (argv[i][0] == '-')
1376 const char *p = argv[i] + 1;
1380 if (SWITCH_TAKES_ARG (c) > (p[1] != 0))
1381 nskip += SWITCH_TAKES_ARG (c) - (p[1] != 0);
1382 else if (WORD_SWITCH_TAKES_ARG (p))
1383 nskip += WORD_SWITCH_TAKES_ARG (p);
1384 else if ((c == 'B' || c == 'b' || c == 'x')
1387 else if (! strcmp (p, "Xlinker"))
1389 else if (! strcmp (p, "Xpreprocessor"))
1391 else if (! strcmp (p, "Xassembler"))
1394 /* Watch out for an option at the end of the command line that
1395 is missing arguments, and avoid skipping past the end of the
1397 if (nskip + i > argc)
1402 newv[newindex++] = argv[i++];
1407 /* Ordinary operands, or +e options. */
1408 newv[newindex++] = argv[i++];
1418 skip_whitespace (char *p)
1422 /* A fully-blank line is a delimiter in the SPEC file and shouldn't
1423 be considered whitespace. */
1424 if (p[0] == '\n' && p[1] == '\n' && p[2] == '\n')
1426 else if (*p == '\n' || *p == ' ' || *p == '\t')
1440 /* Structures to keep track of prefixes to try when looking for files. */
1444 const char *prefix; /* String to prepend to the path. */
1445 struct prefix_list *next; /* Next in linked list. */
1446 int require_machine_suffix; /* Don't use without machine_suffix. */
1447 /* 2 means try both machine_suffix and just_machine_suffix. */
1448 int priority; /* Sort key - priority within list. */
1449 int os_multilib; /* 1 if OS multilib scheme should be used,
1450 0 for GCC multilib scheme. */
1455 struct prefix_list *plist; /* List of prefixes to try */
1456 int max_len; /* Max length of a prefix in PLIST */
1457 const char *name; /* Name of this list (used in config stuff) */
1460 /* List of prefixes to try when looking for executables. */
1462 static struct path_prefix exec_prefixes = { 0, 0, "exec" };
1464 /* List of prefixes to try when looking for startup (crt0) files. */
1466 static struct path_prefix startfile_prefixes = { 0, 0, "startfile" };
1468 /* List of prefixes to try when looking for include files. */
1470 static struct path_prefix include_prefixes = { 0, 0, "include" };
1472 /* Suffix to attach to directories searched for commands.
1473 This looks like `MACHINE/VERSION/'. */
1475 static const char *machine_suffix = 0;
1477 /* Suffix to attach to directories searched for commands.
1478 This is just `MACHINE/'. */
1480 static const char *just_machine_suffix = 0;
1482 /* Adjusted value of GCC_EXEC_PREFIX envvar. */
1484 static const char *gcc_exec_prefix;
1486 /* Adjusted value of standard_libexec_prefix. */
1488 static const char *gcc_libexec_prefix;
1490 /* Default prefixes to attach to command names. */
1492 #ifndef STANDARD_STARTFILE_PREFIX_1
1493 #define STANDARD_STARTFILE_PREFIX_1 "/lib/"
1495 #ifndef STANDARD_STARTFILE_PREFIX_2
1496 #define STANDARD_STARTFILE_PREFIX_2 "/usr/lib/"
1499 #ifdef CROSS_DIRECTORY_STRUCTURE /* Don't use these prefixes for a cross compiler. */
1500 #undef MD_EXEC_PREFIX
1501 #undef MD_STARTFILE_PREFIX
1502 #undef MD_STARTFILE_PREFIX_1
1505 /* If no prefixes defined, use the null string, which will disable them. */
1506 #ifndef MD_EXEC_PREFIX
1507 #define MD_EXEC_PREFIX ""
1509 #ifndef MD_STARTFILE_PREFIX
1510 #define MD_STARTFILE_PREFIX ""
1512 #ifndef MD_STARTFILE_PREFIX_1
1513 #define MD_STARTFILE_PREFIX_1 ""
1516 /* These directories are locations set at configure-time based on the
1517 --prefix option provided to configure. Their initializers are
1518 defined in Makefile.in. These paths are not *directly* used when
1519 gcc_exec_prefix is set because, in that case, we know where the
1520 compiler has been installed, and use paths relative to that
1521 location instead. */
1522 static const char *const standard_exec_prefix = STANDARD_EXEC_PREFIX;
1523 static const char *const standard_libexec_prefix = STANDARD_LIBEXEC_PREFIX;
1524 static const char *const standard_bindir_prefix = STANDARD_BINDIR_PREFIX;
1525 static const char *const standard_startfile_prefix = STANDARD_STARTFILE_PREFIX;
1527 /* For native compilers, these are well-known paths containing
1528 components that may be provided by the system. For cross
1529 compilers, these paths are not used. */
1530 static const char *const standard_exec_prefix_1 = "/usr/libexec/gcc/";
1531 static const char *const standard_exec_prefix_2 = "/usr/lib/gcc/";
1532 static const char *md_exec_prefix = MD_EXEC_PREFIX;
1533 static const char *md_startfile_prefix = MD_STARTFILE_PREFIX;
1534 static const char *md_startfile_prefix_1 = MD_STARTFILE_PREFIX_1;
1535 static const char *const standard_startfile_prefix_1
1536 = STANDARD_STARTFILE_PREFIX_1;
1537 static const char *const standard_startfile_prefix_2
1538 = STANDARD_STARTFILE_PREFIX_2;
1540 /* A relative path to be used in finding the location of tools
1541 relative to the driver. */
1542 static const char *const tooldir_base_prefix = TOOLDIR_BASE_PREFIX;
1544 /* Subdirectory to use for locating libraries. Set by
1545 set_multilib_dir based on the compilation options. */
1547 static const char *multilib_dir;
1549 /* Subdirectory to use for locating libraries in OS conventions. Set by
1550 set_multilib_dir based on the compilation options. */
1552 static const char *multilib_os_dir;
1554 /* Structure to keep track of the specs that have been defined so far.
1555 These are accessed using %(specname) or %[specname] in a compiler
1560 /* The following 2 fields must be first */
1561 /* to allow EXTRA_SPECS to be initialized */
1562 const char *name; /* name of the spec. */
1563 const char *ptr; /* available ptr if no static pointer */
1565 /* The following fields are not initialized */
1566 /* by EXTRA_SPECS */
1567 const char **ptr_spec; /* pointer to the spec itself. */
1568 struct spec_list *next; /* Next spec in linked list. */
1569 int name_len; /* length of the name */
1570 int alloc_p; /* whether string was allocated */
1573 #define INIT_STATIC_SPEC(NAME,PTR) \
1574 { NAME, NULL, PTR, (struct spec_list *) 0, sizeof (NAME) - 1, 0 }
1576 /* List of statically defined specs. */
1577 static struct spec_list static_specs[] =
1579 INIT_STATIC_SPEC ("asm", &asm_spec),
1580 INIT_STATIC_SPEC ("asm_debug", &asm_debug),
1581 INIT_STATIC_SPEC ("asm_final", &asm_final_spec),
1582 INIT_STATIC_SPEC ("asm_options", &asm_options),
1583 INIT_STATIC_SPEC ("invoke_as", &invoke_as),
1584 INIT_STATIC_SPEC ("cpp", &cpp_spec),
1585 INIT_STATIC_SPEC ("cpp_options", &cpp_options),
1586 INIT_STATIC_SPEC ("cpp_debug_options", &cpp_debug_options),
1587 INIT_STATIC_SPEC ("cpp_unique_options", &cpp_unique_options),
1588 INIT_STATIC_SPEC ("trad_capable_cpp", &trad_capable_cpp),
1589 INIT_STATIC_SPEC ("cc1", &cc1_spec),
1590 INIT_STATIC_SPEC ("cc1_options", &cc1_options),
1591 INIT_STATIC_SPEC ("cc1plus", &cc1plus_spec),
1592 INIT_STATIC_SPEC ("link_gcc_c_sequence", &link_gcc_c_sequence_spec),
1593 INIT_STATIC_SPEC ("link_ssp", &link_ssp_spec),
1594 INIT_STATIC_SPEC ("endfile", &endfile_spec),
1595 INIT_STATIC_SPEC ("link", &link_spec),
1596 INIT_STATIC_SPEC ("lib", &lib_spec),
1597 INIT_STATIC_SPEC ("mfwrap", &mfwrap_spec),
1598 INIT_STATIC_SPEC ("mflib", &mflib_spec),
1599 INIT_STATIC_SPEC ("link_gomp", &link_gomp_spec),
1600 INIT_STATIC_SPEC ("libgcc", &libgcc_spec),
1601 INIT_STATIC_SPEC ("startfile", &startfile_spec),
1602 INIT_STATIC_SPEC ("switches_need_spaces", &switches_need_spaces),
1603 INIT_STATIC_SPEC ("cross_compile", &cross_compile),
1604 INIT_STATIC_SPEC ("version", &compiler_version),
1605 INIT_STATIC_SPEC ("multilib", &multilib_select),
1606 INIT_STATIC_SPEC ("multilib_defaults", &multilib_defaults),
1607 INIT_STATIC_SPEC ("multilib_extra", &multilib_extra),
1608 INIT_STATIC_SPEC ("multilib_matches", &multilib_matches),
1609 INIT_STATIC_SPEC ("multilib_exclusions", &multilib_exclusions),
1610 INIT_STATIC_SPEC ("multilib_options", &multilib_options),
1611 INIT_STATIC_SPEC ("linker", &linker_name_spec),
1612 INIT_STATIC_SPEC ("link_libgcc", &link_libgcc_spec),
1613 INIT_STATIC_SPEC ("md_exec_prefix", &md_exec_prefix),
1614 INIT_STATIC_SPEC ("md_startfile_prefix", &md_startfile_prefix),
1615 INIT_STATIC_SPEC ("md_startfile_prefix_1", &md_startfile_prefix_1),
1616 INIT_STATIC_SPEC ("startfile_prefix_spec", &startfile_prefix_spec),
1617 INIT_STATIC_SPEC ("sysroot_spec", &sysroot_spec),
1618 INIT_STATIC_SPEC ("sysroot_suffix_spec", &sysroot_suffix_spec),
1619 INIT_STATIC_SPEC ("sysroot_hdrs_suffix_spec", &sysroot_hdrs_suffix_spec),
1622 #ifdef EXTRA_SPECS /* additional specs needed */
1623 /* Structure to keep track of just the first two args of a spec_list.
1624 That is all that the EXTRA_SPECS macro gives us. */
1627 const char *const name;
1628 const char *const ptr;
1631 static const struct spec_list_1 extra_specs_1[] = { EXTRA_SPECS };
1632 static struct spec_list *extra_specs = (struct spec_list *) 0;
1635 /* List of dynamically allocates specs that have been defined so far. */
1637 static struct spec_list *specs = (struct spec_list *) 0;
1639 /* List of static spec functions. */
1641 static const struct spec_function static_spec_functions[] =
1643 { "getenv", getenv_spec_function },
1644 { "if-exists", if_exists_spec_function },
1645 { "if-exists-else", if_exists_else_spec_function },
1646 { "replace-outfile", replace_outfile_spec_function },
1647 { "version-compare", version_compare_spec_function },
1648 { "include", include_spec_function },
1649 { "print-asm-header", print_asm_header_spec_function },
1650 #ifdef EXTRA_SPEC_FUNCTIONS
1651 EXTRA_SPEC_FUNCTIONS
1656 static int processing_spec_function;
1658 /* Add appropriate libgcc specs to OBSTACK, taking into account
1659 various permutations of -shared-libgcc, -shared, and such. */
1661 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
1663 #ifndef USE_LD_AS_NEEDED
1664 #define USE_LD_AS_NEEDED 0
1668 init_gcc_specs (struct obstack *obstack, const char *shared_name,
1669 const char *static_name, const char *eh_name)
1673 buf = concat ("%{static|static-libgcc:", static_name, " ", eh_name, "}"
1674 "%{!static:%{!static-libgcc:"
1675 #if USE_LD_AS_NEEDED
1676 "%{!shared-libgcc:",
1677 static_name, " --as-needed ", shared_name, " --no-as-needed"
1680 shared_name, "%{!shared: ", static_name, "}"
1684 "%{!shared-libgcc:", static_name, " ", eh_name, "}"
1685 "%{shared-libgcc:", shared_name, " ", static_name, "}"
1689 "%{shared-libgcc:", shared_name, "}"
1690 "%{!shared-libgcc:", static_name, "}"
1693 "%{shared:", shared_name, "}"
1698 obstack_grow (obstack, buf, strlen (buf));
1701 #endif /* ENABLE_SHARED_LIBGCC */
1703 /* Initialize the specs lookup routines. */
1708 struct spec_list *next = (struct spec_list *) 0;
1709 struct spec_list *sl = (struct spec_list *) 0;
1713 return; /* Already initialized. */
1716 notice ("Using built-in specs.\n");
1719 extra_specs = XCNEWVEC (struct spec_list, ARRAY_SIZE (extra_specs_1));
1721 for (i = ARRAY_SIZE (extra_specs_1) - 1; i >= 0; i--)
1723 sl = &extra_specs[i];
1724 sl->name = extra_specs_1[i].name;
1725 sl->ptr = extra_specs_1[i].ptr;
1727 sl->name_len = strlen (sl->name);
1728 sl->ptr_spec = &sl->ptr;
1733 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--)
1735 sl = &static_specs[i];
1740 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
1741 /* ??? If neither -shared-libgcc nor --static-libgcc was
1742 seen, then we should be making an educated guess. Some proposed
1743 heuristics for ELF include:
1745 (1) If "-Wl,--export-dynamic", then it's a fair bet that the
1746 program will be doing dynamic loading, which will likely
1747 need the shared libgcc.
1749 (2) If "-ldl", then it's also a fair bet that we're doing
1752 (3) For each ET_DYN we're linking against (either through -lfoo
1753 or /some/path/foo.so), check to see whether it or one of
1754 its dependencies depends on a shared libgcc.
1758 If the runtime is fixed to look for program headers instead
1759 of calling __register_frame_info at all, for each object,
1760 use the shared libgcc if any EH symbol referenced.
1762 If crtstuff is fixed to not invoke __register_frame_info
1763 automatically, for each object, use the shared libgcc if
1764 any non-empty unwind section found.
1766 Doing any of this probably requires invoking an external program to
1767 do the actual object file scanning. */
1769 const char *p = libgcc_spec;
1772 /* Transform the extant libgcc_spec into one that uses the shared libgcc
1773 when given the proper command line arguments. */
1776 if (in_sep && *p == '-' && strncmp (p, "-lgcc", 5) == 0)
1778 init_gcc_specs (&obstack,
1780 #ifdef USE_LIBUNWIND_EXCEPTIONS
1786 #ifdef USE_LIBUNWIND_EXCEPTIONS
1787 # ifdef HAVE_LD_STATIC_DYNAMIC
1788 " %{!static:-Bstatic} -lunwind %{!static:-Bdynamic}"
1798 else if (in_sep && *p == 'l' && strncmp (p, "libgcc.a%s", 10) == 0)
1800 /* Ug. We don't know shared library extensions. Hope that
1801 systems that use this form don't do shared libraries. */
1802 init_gcc_specs (&obstack,
1806 #ifdef USE_LIBUNWIND_EXCEPTIONS
1815 obstack_1grow (&obstack, *p);
1816 in_sep = (*p == ' ');
1821 obstack_1grow (&obstack, '\0');
1822 libgcc_spec = XOBFINISH (&obstack, const char *);
1825 #ifdef USE_AS_TRADITIONAL_FORMAT
1826 /* Prepend "--traditional-format" to whatever asm_spec we had before. */
1828 static const char tf[] = "--traditional-format ";
1829 obstack_grow (&obstack, tf, sizeof(tf) - 1);
1830 obstack_grow0 (&obstack, asm_spec, strlen (asm_spec));
1831 asm_spec = XOBFINISH (&obstack, const char *);
1835 /* Prepend LINK_EH_SPEC to whatever link_spec we had before. */
1836 obstack_grow (&obstack, LINK_EH_SPEC, sizeof(LINK_EH_SPEC) - 1);
1837 obstack_grow0 (&obstack, link_spec, strlen (link_spec));
1838 link_spec = XOBFINISH (&obstack, const char *);
1844 /* Change the value of spec NAME to SPEC. If SPEC is empty, then the spec is
1845 removed; If the spec starts with a + then SPEC is added to the end of the
1849 set_spec (const char *name, const char *spec)
1851 struct spec_list *sl;
1852 const char *old_spec;
1853 int name_len = strlen (name);
1856 /* If this is the first call, initialize the statically allocated specs. */
1859 struct spec_list *next = (struct spec_list *) 0;
1860 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--)
1862 sl = &static_specs[i];
1869 /* See if the spec already exists. */
1870 for (sl = specs; sl; sl = sl->next)
1871 if (name_len == sl->name_len && !strcmp (sl->name, name))
1876 /* Not found - make it. */
1877 sl = XNEW (struct spec_list);
1878 sl->name = xstrdup (name);
1879 sl->name_len = name_len;
1880 sl->ptr_spec = &sl->ptr;
1882 *(sl->ptr_spec) = "";
1887 old_spec = *(sl->ptr_spec);
1888 *(sl->ptr_spec) = ((spec[0] == '+' && ISSPACE ((unsigned char)spec[1]))
1889 ? concat (old_spec, spec + 1, NULL)
1894 notice ("Setting spec %s to '%s'\n\n", name, *(sl->ptr_spec));
1897 /* Free the old spec. */
1898 if (old_spec && sl->alloc_p)
1899 free (CONST_CAST(char *, old_spec));
1904 /* Accumulate a command (program name and args), and run it. */
1906 /* Vector of pointers to arguments in the current line of specifications. */
1908 static const char **argbuf;
1910 /* Number of elements allocated in argbuf. */
1912 static int argbuf_length;
1914 /* Number of elements in argbuf currently in use (containing args). */
1916 static int argbuf_index;
1918 /* Position in the argbuf array containing the name of the output file
1919 (the value associated with the "-o" flag). */
1921 static int have_o_argbuf_index = 0;
1923 /* Were the options -c or -S passed. */
1924 static int have_c = 0;
1926 /* Was the option -o passed. */
1927 static int have_o = 0;
1929 /* This is the list of suffixes and codes (%g/%u/%U/%j) and the associated
1930 temp file. If the HOST_BIT_BUCKET is used for %j, no entry is made for
1933 static struct temp_name {
1934 const char *suffix; /* suffix associated with the code. */
1935 int length; /* strlen (suffix). */
1936 int unique; /* Indicates whether %g or %u/%U was used. */
1937 const char *filename; /* associated filename. */
1938 int filename_length; /* strlen (filename). */
1939 struct temp_name *next;
1942 /* Number of commands executed so far. */
1944 static int execution_count;
1946 /* Number of commands that exited with a signal. */
1948 static int signal_count;
1950 /* Name with which this program was invoked. */
1952 static const char *programname;
1954 /* Allocate the argument vector. */
1960 argbuf = XNEWVEC (const char *, argbuf_length);
1963 /* Clear out the vector of arguments (after a command is executed). */
1971 /* Add one argument to the vector at the end.
1972 This is done when a space is seen or at the end of the line.
1973 If DELETE_ALWAYS is nonzero, the arg is a filename
1974 and the file should be deleted eventually.
1975 If DELETE_FAILURE is nonzero, the arg is a filename
1976 and the file should be deleted if this compilation fails. */
1979 store_arg (const char *arg, int delete_always, int delete_failure)
1981 if (argbuf_index + 1 == argbuf_length)
1982 argbuf = XRESIZEVEC (const char *, argbuf, (argbuf_length *= 2));
1984 argbuf[argbuf_index++] = arg;
1985 argbuf[argbuf_index] = 0;
1987 if (strcmp (arg, "-o") == 0)
1988 have_o_argbuf_index = argbuf_index;
1989 if (delete_always || delete_failure)
1990 record_temp_file (arg, delete_always, delete_failure);
1993 /* Load specs from a file name named FILENAME, replacing occurrences of
1994 various different types of line-endings, \r\n, \n\r and just \r, with
1998 load_specs (const char *filename)
2002 struct stat statbuf;
2009 notice ("Reading specs from %s\n", filename);
2011 /* Open and stat the file. */
2012 desc = open (filename, O_RDONLY, 0);
2014 pfatal_with_name (filename);
2015 if (stat (filename, &statbuf) < 0)
2016 pfatal_with_name (filename);
2018 /* Read contents of file into BUFFER. */
2019 buffer = XNEWVEC (char, statbuf.st_size + 1);
2020 readlen = read (desc, buffer, (unsigned) statbuf.st_size);
2022 pfatal_with_name (filename);
2023 buffer[readlen] = 0;
2026 specs = XNEWVEC (char, readlen + 1);
2028 for (buffer_p = buffer; buffer_p && *buffer_p; buffer_p++)
2034 if (buffer_p > buffer && *(buffer_p - 1) == '\n') /* \n\r */
2036 else if (*(buffer_p + 1) == '\n') /* \r\n */
2050 /* Read compilation specs from a file named FILENAME,
2051 replacing the default ones.
2053 A suffix which starts with `*' is a definition for
2054 one of the machine-specific sub-specs. The "suffix" should be
2055 *asm, *cc1, *cpp, *link, *startfile, etc.
2056 The corresponding spec is stored in asm_spec, etc.,
2057 rather than in the `compilers' vector.
2059 Anything invalid in the file is a fatal error. */
2062 read_specs (const char *filename, int main_p)
2067 buffer = load_specs (filename);
2069 /* Scan BUFFER for specs, putting them in the vector. */
2075 char *in, *out, *p1, *p2, *p3;
2077 /* Advance P in BUFFER to the next nonblank nocomment line. */
2078 p = skip_whitespace (p);
2082 /* Is this a special command that starts with '%'? */
2083 /* Don't allow this for the main specs file, since it would
2084 encourage people to overwrite it. */
2085 if (*p == '%' && !main_p)
2088 while (*p && *p != '\n')
2094 if (!strncmp (p1, "%include", sizeof ("%include") - 1)
2095 && (p1[sizeof "%include" - 1] == ' '
2096 || p1[sizeof "%include" - 1] == '\t'))
2100 p1 += sizeof ("%include");
2101 while (*p1 == ' ' || *p1 == '\t')
2104 if (*p1++ != '<' || p[-2] != '>')
2105 fatal ("specs %%include syntax malformed after %ld characters",
2106 (long) (p1 - buffer + 1));
2109 new_filename = find_a_file (&startfile_prefixes, p1, R_OK, true);
2110 read_specs (new_filename ? new_filename : p1, FALSE);
2113 else if (!strncmp (p1, "%include_noerr", sizeof "%include_noerr" - 1)
2114 && (p1[sizeof "%include_noerr" - 1] == ' '
2115 || p1[sizeof "%include_noerr" - 1] == '\t'))
2119 p1 += sizeof "%include_noerr";
2120 while (*p1 == ' ' || *p1 == '\t')
2123 if (*p1++ != '<' || p[-2] != '>')
2124 fatal ("specs %%include syntax malformed after %ld characters",
2125 (long) (p1 - buffer + 1));
2128 new_filename = find_a_file (&startfile_prefixes, p1, R_OK, true);
2130 read_specs (new_filename, FALSE);
2131 else if (verbose_flag)
2132 notice ("could not find specs file %s\n", p1);
2135 else if (!strncmp (p1, "%rename", sizeof "%rename" - 1)
2136 && (p1[sizeof "%rename" - 1] == ' '
2137 || p1[sizeof "%rename" - 1] == '\t'))
2140 struct spec_list *sl;
2141 struct spec_list *newsl;
2143 /* Get original name. */
2144 p1 += sizeof "%rename";
2145 while (*p1 == ' ' || *p1 == '\t')
2148 if (! ISALPHA ((unsigned char) *p1))
2149 fatal ("specs %%rename syntax malformed after %ld characters",
2150 (long) (p1 - buffer));
2153 while (*p2 && !ISSPACE ((unsigned char) *p2))
2156 if (*p2 != ' ' && *p2 != '\t')
2157 fatal ("specs %%rename syntax malformed after %ld characters",
2158 (long) (p2 - buffer));
2162 while (*p2 == ' ' || *p2 == '\t')
2165 if (! ISALPHA ((unsigned char) *p2))
2166 fatal ("specs %%rename syntax malformed after %ld characters",
2167 (long) (p2 - buffer));
2169 /* Get new spec name. */
2171 while (*p3 && !ISSPACE ((unsigned char) *p3))
2175 fatal ("specs %%rename syntax malformed after %ld characters",
2176 (long) (p3 - buffer));
2179 for (sl = specs; sl; sl = sl->next)
2180 if (name_len == sl->name_len && !strcmp (sl->name, p1))
2184 fatal ("specs %s spec was not found to be renamed", p1);
2186 if (strcmp (p1, p2) == 0)
2189 for (newsl = specs; newsl; newsl = newsl->next)
2190 if (strcmp (newsl->name, p2) == 0)
2191 fatal ("%s: attempt to rename spec '%s' to already defined spec '%s'",
2196 notice ("rename spec %s to %s\n", p1, p2);
2198 notice ("spec is '%s'\n\n", *(sl->ptr_spec));
2202 set_spec (p2, *(sl->ptr_spec));
2204 free (CONST_CAST (char *, *(sl->ptr_spec)));
2206 *(sl->ptr_spec) = "";
2211 fatal ("specs unknown %% command after %ld characters",
2212 (long) (p1 - buffer));
2215 /* Find the colon that should end the suffix. */
2217 while (*p1 && *p1 != ':' && *p1 != '\n')
2220 /* The colon shouldn't be missing. */
2222 fatal ("specs file malformed after %ld characters",
2223 (long) (p1 - buffer));
2225 /* Skip back over trailing whitespace. */
2227 while (p2 > buffer && (p2[-1] == ' ' || p2[-1] == '\t'))
2230 /* Copy the suffix to a string. */
2231 suffix = save_string (p, p2 - p);
2232 /* Find the next line. */
2233 p = skip_whitespace (p1 + 1);
2235 fatal ("specs file malformed after %ld characters",
2236 (long) (p - buffer));
2239 /* Find next blank line or end of string. */
2240 while (*p1 && !(*p1 == '\n' && (p1[1] == '\n' || p1[1] == '\0')))
2243 /* Specs end at the blank line and do not include the newline. */
2244 spec = save_string (p, p1 - p);
2247 /* Delete backslash-newline sequences from the spec. */
2252 if (in[0] == '\\' && in[1] == '\n')
2254 else if (in[0] == '#')
2255 while (*in && *in != '\n')
2263 if (suffix[0] == '*')
2265 if (! strcmp (suffix, "*link_command"))
2266 link_command_spec = spec;
2268 set_spec (suffix + 1, spec);
2272 /* Add this pair to the vector. */
2274 = XRESIZEVEC (struct compiler, compilers, n_compilers + 2);
2276 compilers[n_compilers].suffix = suffix;
2277 compilers[n_compilers].spec = spec;
2279 memset (&compilers[n_compilers], 0, sizeof compilers[n_compilers]);
2283 link_command_spec = spec;
2286 if (link_command_spec == 0)
2287 fatal ("spec file has no spec for linking");
2290 /* Record the names of temporary files we tell compilers to write,
2291 and delete them at the end of the run. */
2293 /* This is the common prefix we use to make temp file names.
2294 It is chosen once for each run of this program.
2295 It is substituted into a spec by %g or %j.
2296 Thus, all temp file names contain this prefix.
2297 In practice, all temp file names start with this prefix.
2299 This prefix comes from the envvar TMPDIR if it is defined;
2300 otherwise, from the P_tmpdir macro if that is defined;
2301 otherwise, in /usr/tmp or /tmp;
2302 or finally the current directory if all else fails. */
2304 static const char *temp_filename;
2306 /* Length of the prefix. */
2308 static int temp_filename_length;
2310 /* Define the list of temporary files to delete. */
2315 struct temp_file *next;
2318 /* Queue of files to delete on success or failure of compilation. */
2319 static struct temp_file *always_delete_queue;
2320 /* Queue of files to delete on failure of compilation. */
2321 static struct temp_file *failure_delete_queue;
2323 /* Record FILENAME as a file to be deleted automatically.
2324 ALWAYS_DELETE nonzero means delete it if all compilation succeeds;
2325 otherwise delete it in any case.
2326 FAIL_DELETE nonzero means delete it if a compilation step fails;
2327 otherwise delete it in any case. */
2330 record_temp_file (const char *filename, int always_delete, int fail_delete)
2332 char *const name = xstrdup (filename);
2336 struct temp_file *temp;
2337 for (temp = always_delete_queue; temp; temp = temp->next)
2338 if (! strcmp (name, temp->name))
2341 temp = XNEW (struct temp_file);
2342 temp->next = always_delete_queue;
2344 always_delete_queue = temp;
2351 struct temp_file *temp;
2352 for (temp = failure_delete_queue; temp; temp = temp->next)
2353 if (! strcmp (name, temp->name))
2356 temp = XNEW (struct temp_file);
2357 temp->next = failure_delete_queue;
2359 failure_delete_queue = temp;
2365 /* Delete all the temporary files whose names we previously recorded. */
2367 #ifndef DELETE_IF_ORDINARY
2368 #define DELETE_IF_ORDINARY(NAME,ST,VERBOSE_FLAG) \
2371 if (stat (NAME, &ST) >= 0 && S_ISREG (ST.st_mode)) \
2372 if (unlink (NAME) < 0) \
2374 perror_with_name (NAME); \
2379 delete_if_ordinary (const char *name)
2385 printf ("Delete %s? (y or n) ", name);
2389 while ((c = getchar ()) != '\n' && c != EOF)
2392 if (i == 'y' || i == 'Y')
2394 DELETE_IF_ORDINARY (name, st, verbose_flag);
2398 delete_temp_files (void)
2400 struct temp_file *temp;
2402 for (temp = always_delete_queue; temp; temp = temp->next)
2403 delete_if_ordinary (temp->name);
2404 always_delete_queue = 0;
2407 /* Delete all the files to be deleted on error. */
2410 delete_failure_queue (void)
2412 struct temp_file *temp;
2414 for (temp = failure_delete_queue; temp; temp = temp->next)
2415 delete_if_ordinary (temp->name);
2419 clear_failure_queue (void)
2421 failure_delete_queue = 0;
2424 /* Call CALLBACK for each path in PATHS, breaking out early if CALLBACK
2426 If DO_MULTI is true iterate over the paths twice, first with multilib
2427 suffix then without, otherwise iterate over the paths once without
2428 adding a multilib suffix. When DO_MULTI is true, some attempt is made
2429 to avoid visiting the same path twice, but we could do better. For
2430 instance, /usr/lib/../lib is considered different from /usr/lib.
2431 At least EXTRA_SPACE chars past the end of the path passed to
2432 CALLBACK are available for use by the callback.
2433 CALLBACK_INFO allows extra parameters to be passed to CALLBACK.
2435 Returns the value returned by CALLBACK. */
2438 for_each_path (const struct path_prefix *paths,
2441 void *(*callback) (char *, void *),
2442 void *callback_info)
2444 struct prefix_list *pl;
2445 const char *multi_dir = NULL;
2446 const char *multi_os_dir = NULL;
2447 const char *multi_suffix;
2448 const char *just_multi_suffix;
2451 bool skip_multi_dir = false;
2452 bool skip_multi_os_dir = false;
2454 multi_suffix = machine_suffix;
2455 just_multi_suffix = just_machine_suffix;
2456 if (do_multi && multilib_dir && strcmp (multilib_dir, ".") != 0)
2458 multi_dir = concat (multilib_dir, dir_separator_str, NULL);
2459 multi_suffix = concat (multi_suffix, multi_dir, NULL);
2460 just_multi_suffix = concat (just_multi_suffix, multi_dir, NULL);
2462 if (do_multi && multilib_os_dir && strcmp (multilib_os_dir, ".") != 0)
2463 multi_os_dir = concat (multilib_os_dir, dir_separator_str, NULL);
2467 size_t multi_dir_len = 0;
2468 size_t multi_os_dir_len = 0;
2470 size_t just_suffix_len;
2474 multi_dir_len = strlen (multi_dir);
2476 multi_os_dir_len = strlen (multi_os_dir);
2477 suffix_len = strlen (multi_suffix);
2478 just_suffix_len = strlen (just_multi_suffix);
2482 len = paths->max_len + extra_space + 1;
2483 if (suffix_len > multi_os_dir_len)
2486 len += multi_os_dir_len;
2487 path = XNEWVEC (char, len);
2490 for (pl = paths->plist; pl != 0; pl = pl->next)
2492 len = strlen (pl->prefix);
2493 memcpy (path, pl->prefix, len);
2495 /* Look first in MACHINE/VERSION subdirectory. */
2496 if (!skip_multi_dir)
2498 memcpy (path + len, multi_suffix, suffix_len + 1);
2499 ret = callback (path, callback_info);
2504 /* Some paths are tried with just the machine (ie. target)
2505 subdir. This is used for finding as, ld, etc. */
2507 && pl->require_machine_suffix == 2)
2509 memcpy (path + len, just_multi_suffix, just_suffix_len + 1);
2510 ret = callback (path, callback_info);
2515 /* Now try the base path. */
2516 if (!pl->require_machine_suffix
2517 && !(pl->os_multilib ? skip_multi_os_dir : skip_multi_dir))
2519 const char *this_multi;
2520 size_t this_multi_len;
2522 if (pl->os_multilib)
2524 this_multi = multi_os_dir;
2525 this_multi_len = multi_os_dir_len;
2529 this_multi = multi_dir;
2530 this_multi_len = multi_dir_len;
2534 memcpy (path + len, this_multi, this_multi_len + 1);
2538 ret = callback (path, callback_info);
2546 if (multi_dir == NULL && multi_os_dir == NULL)
2549 /* Run through the paths again, this time without multilibs.
2550 Don't repeat any we have already seen. */
2553 free (CONST_CAST (char *, multi_dir));
2555 free (CONST_CAST (char *, multi_suffix));
2556 multi_suffix = machine_suffix;
2557 free (CONST_CAST (char *, just_multi_suffix));
2558 just_multi_suffix = just_machine_suffix;
2561 skip_multi_dir = true;
2564 free (CONST_CAST (char *, multi_os_dir));
2565 multi_os_dir = NULL;
2568 skip_multi_os_dir = true;
2573 free (CONST_CAST (char *, multi_dir));
2574 free (CONST_CAST (char *, multi_suffix));
2575 free (CONST_CAST (char *, just_multi_suffix));
2578 free (CONST_CAST (char *, multi_os_dir));
2584 /* Callback for build_search_list. Adds path to obstack being built. */
2586 struct add_to_obstack_info {
2593 add_to_obstack (char *path, void *data)
2595 struct add_to_obstack_info *info = (struct add_to_obstack_info *) data;
2597 if (info->check_dir && !is_directory (path, false))
2600 if (!info->first_time)
2601 obstack_1grow (info->ob, PATH_SEPARATOR);
2603 obstack_grow (info->ob, path, strlen (path));
2605 info->first_time = false;
2609 /* Add or change the value of an environment variable, outputting the
2610 change to standard error if in verbose mode. */
2612 xputenv (const char *string)
2615 notice ("%s\n", string);
2616 putenv (CONST_CAST (char *, string));
2619 /* Build a list of search directories from PATHS.
2620 PREFIX is a string to prepend to the list.
2621 If CHECK_DIR_P is true we ensure the directory exists.
2622 If DO_MULTI is true, multilib paths are output first, then
2624 This is used mostly by putenv_from_prefixes so we use `collect_obstack'.
2625 It is also used by the --print-search-dirs flag. */
2628 build_search_list (const struct path_prefix *paths, const char *prefix,
2629 bool check_dir, bool do_multi)
2631 struct add_to_obstack_info info;
2633 info.ob = &collect_obstack;
2634 info.check_dir = check_dir;
2635 info.first_time = true;
2637 obstack_grow (&collect_obstack, prefix, strlen (prefix));
2638 obstack_1grow (&collect_obstack, '=');
2640 for_each_path (paths, do_multi, 0, add_to_obstack, &info);
2642 obstack_1grow (&collect_obstack, '\0');
2643 return XOBFINISH (&collect_obstack, char *);
2646 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
2650 putenv_from_prefixes (const struct path_prefix *paths, const char *env_var,
2653 xputenv (build_search_list (paths, env_var, true, do_multi));
2656 /* Check whether NAME can be accessed in MODE. This is like access,
2657 except that it never considers directories to be executable. */
2660 access_check (const char *name, int mode)
2666 if (stat (name, &st) < 0
2667 || S_ISDIR (st.st_mode))
2671 return access (name, mode);
2674 /* Callback for find_a_file. Appends the file name to the directory
2675 path. If the resulting file exists in the right mode, return the
2676 full pathname to the file. */
2678 struct file_at_path_info {
2687 file_at_path (char *path, void *data)
2689 struct file_at_path_info *info = (struct file_at_path_info *) data;
2690 size_t len = strlen (path);
2692 memcpy (path + len, info->name, info->name_len);
2693 len += info->name_len;
2695 /* Some systems have a suffix for executable files.
2696 So try appending that first. */
2697 if (info->suffix_len)
2699 memcpy (path + len, info->suffix, info->suffix_len + 1);
2700 if (access_check (path, info->mode) == 0)
2705 if (access_check (path, info->mode) == 0)
2711 /* Search for NAME using the prefix list PREFIXES. MODE is passed to
2712 access to check permissions. If DO_MULTI is true, search multilib
2713 paths then non-multilib paths, otherwise do not search multilib paths.
2714 Return 0 if not found, otherwise return its name, allocated with malloc. */
2717 find_a_file (const struct path_prefix *pprefix, const char *name, int mode,
2720 struct file_at_path_info info;
2722 #ifdef DEFAULT_ASSEMBLER
2723 if (! strcmp (name, "as") && access (DEFAULT_ASSEMBLER, mode) == 0)
2724 return xstrdup (DEFAULT_ASSEMBLER);
2727 #ifdef DEFAULT_LINKER
2728 if (! strcmp(name, "ld") && access (DEFAULT_LINKER, mode) == 0)
2729 return xstrdup (DEFAULT_LINKER);
2732 /* Determine the filename to execute (special case for absolute paths). */
2734 if (IS_ABSOLUTE_PATH (name))
2736 if (access (name, mode) == 0)
2737 return xstrdup (name);
2743 info.suffix = (mode & X_OK) != 0 ? HOST_EXECUTABLE_SUFFIX : "";
2744 info.name_len = strlen (info.name);
2745 info.suffix_len = strlen (info.suffix);
2748 return (char*) for_each_path (pprefix, do_multi,
2749 info.name_len + info.suffix_len,
2750 file_at_path, &info);
2753 /* Ranking of prefixes in the sort list. -B prefixes are put before
2756 enum path_prefix_priority
2758 PREFIX_PRIORITY_B_OPT,
2759 PREFIX_PRIORITY_LAST
2762 /* Add an entry for PREFIX in PLIST. The PLIST is kept in ascending
2763 order according to PRIORITY. Within each PRIORITY, new entries are
2766 If WARN is nonzero, we will warn if no file is found
2767 through this prefix. WARN should point to an int
2768 which will be set to 1 if this entry is used.
2770 COMPONENT is the value to be passed to update_path.
2772 REQUIRE_MACHINE_SUFFIX is 1 if this prefix can't be used without
2773 the complete value of machine_suffix.
2774 2 means try both machine_suffix and just_machine_suffix. */
2777 add_prefix (struct path_prefix *pprefix, const char *prefix,
2778 const char *component, /* enum prefix_priority */ int priority,
2779 int require_machine_suffix, int os_multilib)
2781 struct prefix_list *pl, **prev;
2784 for (prev = &pprefix->plist;
2785 (*prev) != NULL && (*prev)->priority <= priority;
2786 prev = &(*prev)->next)
2789 /* Keep track of the longest prefix. */
2791 prefix = update_path (prefix, component);
2792 len = strlen (prefix);
2793 if (len > pprefix->max_len)
2794 pprefix->max_len = len;
2796 pl = XNEW (struct prefix_list);
2797 pl->prefix = prefix;
2798 pl->require_machine_suffix = require_machine_suffix;
2799 pl->priority = priority;
2800 pl->os_multilib = os_multilib;
2802 /* Insert after PREV. */
2807 /* Same as add_prefix, but prepending target_system_root to prefix. */
2808 /* The target_system_root prefix has been relocated by gcc_exec_prefix. */
2810 add_sysrooted_prefix (struct path_prefix *pprefix, const char *prefix,
2811 const char *component,
2812 /* enum prefix_priority */ int priority,
2813 int require_machine_suffix, int os_multilib)
2815 if (!IS_ABSOLUTE_PATH (prefix))
2816 fatal ("system path '%s' is not absolute", prefix);
2818 if (target_system_root)
2820 if (target_sysroot_suffix)
2821 prefix = concat (target_sysroot_suffix, prefix, NULL);
2822 prefix = concat (target_system_root, prefix, NULL);
2824 /* We have to override this because GCC's notion of sysroot
2825 moves along with GCC. */
2829 add_prefix (pprefix, prefix, component, priority,
2830 require_machine_suffix, os_multilib);
2833 /* Execute the command specified by the arguments on the current line of spec.
2834 When using pipes, this includes several piped-together commands
2835 with `|' between them.
2837 Return 0 if successful, -1 if failed. */
2843 int n_commands; /* # of command. */
2845 struct pex_obj *pex;
2848 const char *prog; /* program name. */
2849 const char **argv; /* vector of args. */
2852 struct command *commands; /* each command buffer with above info. */
2854 gcc_assert (!processing_spec_function);
2858 string = find_a_file (&exec_prefixes, argbuf[0], X_OK, false);
2859 argbuf[0] = (string) ? string : argbuf[0];
2860 insert_wrapper (wrapper_string);
2863 /* Count # of piped commands. */
2864 for (n_commands = 1, i = 0; i < argbuf_index; i++)
2865 if (strcmp (argbuf[i], "|") == 0)
2868 /* Get storage for each command. */
2869 commands = (struct command *) alloca (n_commands * sizeof (struct command));
2871 /* Split argbuf into its separate piped processes,
2872 and record info about each one.
2873 Also search for the programs that are to be run. */
2875 commands[0].prog = argbuf[0]; /* first command. */
2876 commands[0].argv = &argbuf[0];
2878 if (!wrapper_string)
2880 string = find_a_file (&exec_prefixes, commands[0].prog, X_OK, false);
2881 commands[0].argv[0] = (string) ? string : commands[0].argv[0];
2884 for (n_commands = 1, i = 0; i < argbuf_index; i++)
2885 if (strcmp (argbuf[i], "|") == 0)
2886 { /* each command. */
2887 #if defined (__MSDOS__) || defined (OS2) || defined (VMS)
2888 fatal ("-pipe not supported");
2890 argbuf[i] = 0; /* termination of command args. */
2891 commands[n_commands].prog = argbuf[i + 1];
2892 commands[n_commands].argv = &argbuf[i + 1];
2893 string = find_a_file (&exec_prefixes, commands[n_commands].prog,
2896 commands[n_commands].argv[0] = string;
2900 argbuf[argbuf_index] = 0;
2902 /* If -v, print what we are about to do, and maybe query. */
2906 /* For help listings, put a blank line between sub-processes. */
2907 if (print_help_list)
2908 fputc ('\n', stderr);
2910 /* Print each piped command as a separate line. */
2911 for (i = 0; i < n_commands; i++)
2913 const char *const *j;
2915 if (verbose_only_flag)
2917 for (j = commands[i].argv; *j; j++)
2920 fprintf (stderr, " \"");
2921 for (p = *j; *p; ++p)
2923 if (*p == '"' || *p == '\\' || *p == '$')
2924 fputc ('\\', stderr);
2927 fputc ('"', stderr);
2931 for (j = commands[i].argv; *j; j++)
2932 fprintf (stderr, " %s", *j);
2934 /* Print a pipe symbol after all but the last command. */
2935 if (i + 1 != n_commands)
2936 fprintf (stderr, " |");
2937 fprintf (stderr, "\n");
2940 if (verbose_only_flag != 0)
2942 /* verbose_only_flag should act as if the spec was
2943 executed, so increment execution_count before
2944 returning. This prevents spurious warnings about
2945 unused linker input files, etc. */
2950 notice ("\nGo ahead? (y or n) ");
2954 while (getchar () != '\n')
2957 if (i != 'y' && i != 'Y')
2962 #ifdef ENABLE_VALGRIND_CHECKING
2963 /* Run the each command through valgrind. To simplify prepending the
2964 path to valgrind and the option "-q" (for quiet operation unless
2965 something triggers), we allocate a separate argv array. */
2967 for (i = 0; i < n_commands; i++)
2973 for (argc = 0; commands[i].argv[argc] != NULL; argc++)
2976 argv = XALLOCAVEC (const char *, argc + 3);
2978 argv[0] = VALGRIND_PATH;
2980 for (j = 2; j < argc + 2; j++)
2981 argv[j] = commands[i].argv[j - 2];
2984 commands[i].argv = argv;
2985 commands[i].prog = argv[0];
2989 /* Run each piped subprocess. */
2991 pex = pex_init (PEX_USE_PIPES | (report_times ? PEX_RECORD_TIMES : 0),
2992 programname, temp_filename);
2994 pfatal_with_name (_("pex_init failed"));
2996 for (i = 0; i < n_commands; i++)
3000 const char *string = commands[i].argv[0];
3002 errmsg = pex_run (pex,
3003 ((i + 1 == n_commands ? PEX_LAST : 0)
3004 | (string == commands[i].prog ? PEX_SEARCH : 0)),
3005 string, CONST_CAST (char **, commands[i].argv),
3014 pfatal_with_name (errmsg);
3018 if (string != commands[i].prog)
3019 free (CONST_CAST (char *, string));
3024 /* Wait for all the subprocesses to finish. */
3028 struct pex_time *times = NULL;
3031 statuses = (int *) alloca (n_commands * sizeof (int));
3032 if (!pex_get_status (pex, n_commands, statuses))
3033 pfatal_with_name (_("failed to get exit status"));
3037 times = (struct pex_time *) alloca (n_commands * sizeof (struct pex_time));
3038 if (!pex_get_times (pex, n_commands, times))
3039 pfatal_with_name (_("failed to get process times"));
3044 for (i = 0; i < n_commands; ++i)
3046 int status = statuses[i];
3048 if (WIFSIGNALED (status))
3051 /* SIGPIPE is a special case. It happens in -pipe mode
3052 when the compiler dies before the preprocessor is done,
3053 or the assembler dies before the compiler is done.
3054 There's generally been an error already, and this is
3055 just fallout. So don't generate another error unless
3056 we would otherwise have succeeded. */
3057 if (WTERMSIG (status) == SIGPIPE
3058 && (signal_count || greatest_status >= MIN_FATAL_STATUS))
3066 Internal error: %s (program %s)\n\
3067 Please submit a full bug report.\n\
3068 See %s for instructions.",
3069 strsignal (WTERMSIG (status)), commands[i].prog,
3072 else if (WIFEXITED (status)
3073 && WEXITSTATUS (status) >= MIN_FATAL_STATUS)
3075 if (WEXITSTATUS (status) > greatest_status)
3076 greatest_status = WEXITSTATUS (status);
3082 struct pex_time *pt = ×[i];
3085 ut = ((double) pt->user_seconds
3086 + (double) pt->user_microseconds / 1.0e6);
3087 st = ((double) pt->system_seconds
3088 + (double) pt->system_microseconds / 1.0e6);
3091 notice ("# %s %.2f %.2f\n", commands[i].prog, ut, st);
3099 /* Find all the switches given to us
3100 and make a vector describing them.
3101 The elements of the vector are strings, one per switch given.
3102 If a switch uses following arguments, then the `part1' field
3103 is the switch itself and the `args' field
3104 is a null-terminated vector containing the following arguments.
3105 Bits in the `live_cond' field are:
3106 SWITCH_LIVE to indicate this switch is true in a conditional spec.
3107 SWITCH_FALSE to indicate this switch is overridden by a later switch.
3108 SWITCH_IGNORE to indicate this switch should be ignored (used in %<S).
3109 The `validated' field is nonzero if any spec has looked at this switch;
3110 if it remains zero at the end of the run, it must be meaningless. */
3112 #define SWITCH_LIVE 0x1
3113 #define SWITCH_FALSE 0x2
3114 #define SWITCH_IGNORE 0x4
3120 unsigned int live_cond;
3121 unsigned char validated;
3122 unsigned char ordering;
3125 static struct switchstr *switches;
3127 static int n_switches;
3129 /* Language is one of three things:
3131 1) The name of a real programming language.
3132 2) NULL, indicating that no one has figured out
3134 3) '*', indicating that the file should be passed
3139 const char *language;
3140 struct compiler *incompiler;
3145 /* Also a vector of input files specified. */
3147 static struct infile *infiles;
3151 /* True if multiple input files are being compiled to a single
3154 static bool combine_inputs;
3156 /* This counts the number of libraries added by lang_specific_driver, so that
3157 we can tell if there were any user supplied any files or libraries. */
3159 static int added_libraries;
3161 /* And a vector of corresponding output files is made up later. */
3163 const char **outfiles;
3165 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3167 /* Convert NAME to a new name if it is the standard suffix. DO_EXE
3168 is true if we should look for an executable suffix. DO_OBJ
3169 is true if we should look for an object suffix. */
3172 convert_filename (const char *name, int do_exe ATTRIBUTE_UNUSED,
3173 int do_obj ATTRIBUTE_UNUSED)
3175 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3183 len = strlen (name);
3185 #ifdef HAVE_TARGET_OBJECT_SUFFIX
3186 /* Convert x.o to x.obj if TARGET_OBJECT_SUFFIX is ".obj". */
3187 if (do_obj && len > 2
3188 && name[len - 2] == '.'
3189 && name[len - 1] == 'o')
3191 obstack_grow (&obstack, name, len - 2);
3192 obstack_grow0 (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX));
3193 name = XOBFINISH (&obstack, const char *);
3197 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3198 /* If there is no filetype, make it the executable suffix (which includes
3199 the "."). But don't get confused if we have just "-o". */
3200 if (! do_exe || TARGET_EXECUTABLE_SUFFIX[0] == 0 || (len == 2 && name[0] == '-'))
3203 for (i = len - 1; i >= 0; i--)
3204 if (IS_DIR_SEPARATOR (name[i]))
3207 for (i++; i < len; i++)
3211 obstack_grow (&obstack, name, len);
3212 obstack_grow0 (&obstack, TARGET_EXECUTABLE_SUFFIX,
3213 strlen (TARGET_EXECUTABLE_SUFFIX));
3214 name = XOBFINISH (&obstack, const char *);
3221 /* Display the command line switches accepted by gcc. */
3225 printf (_("Usage: %s [options] file...\n"), programname);
3226 fputs (_("Options:\n"), stdout);
3228 fputs (_(" -pass-exit-codes Exit with highest error code from a phase\n"), stdout);
3229 fputs (_(" --help Display this information\n"), stdout);
3230 fputs (_(" --target-help Display target specific command line options\n"), stdout);
3231 fputs (_(" --help={target|optimizers|warnings|undocumented|params}[,{[^]joined|[^]separate}]\n"), stdout);
3232 fputs (_(" Display specific types of command line options\n"), stdout);
3234 fputs (_(" (Use '-v --help' to display command line options of sub-processes)\n"), stdout);
3235 fputs (_(" --version Display compiler version information\n"), stdout);
3236 fputs (_(" -dumpspecs Display all of the built in spec strings\n"), stdout);
3237 fputs (_(" -dumpversion Display the version of the compiler\n"), stdout);
3238 fputs (_(" -dumpmachine Display the compiler's target processor\n"), stdout);
3239 fputs (_(" -print-search-dirs Display the directories in the compiler's search path\n"), stdout);
3240 fputs (_(" -print-libgcc-file-name Display the name of the compiler's companion library\n"), stdout);
3241 fputs (_(" -print-file-name=<lib> Display the full path to library <lib>\n"), stdout);
3242 fputs (_(" -print-prog-name=<prog> Display the full path to compiler component <prog>\n"), stdout);
3243 fputs (_(" -print-multi-directory Display the root directory for versions of libgcc\n"), stdout);
3245 -print-multi-lib Display the mapping between command line options and\n\
3246 multiple library search directories\n"), stdout);
3247 fputs (_(" -print-multi-os-directory Display the relative path to OS libraries\n"), stdout);
3248 fputs (_(" -print-sysroot Display the target libraries directory\n"), stdout);
3249 fputs (_(" -print-sysroot-headers-suffix Display the sysroot suffix used to find headers\n"), stdout);
3250 fputs (_(" -Wa,<options> Pass comma-separated <options> on to the assembler\n"), stdout);
3251 fputs (_(" -Wp,<options> Pass comma-separated <options> on to the preprocessor\n"), stdout);
3252 fputs (_(" -Wl,<options> Pass comma-separated <options> on to the linker\n"), stdout);
3253 fputs (_(" -Xassembler <arg> Pass <arg> on to the assembler\n"), stdout);
3254 fputs (_(" -Xpreprocessor <arg> Pass <arg> on to the preprocessor\n"), stdout);
3255 fputs (_(" -Xlinker <arg> Pass <arg> on to the linker\n"), stdout);
3256 fputs (_(" -combine Pass multiple source files to compiler at once\n"), stdout);
3257 fputs (_(" -save-temps Do not delete intermediate files\n"), stdout);
3258 fputs (_(" -pipe Use pipes rather than intermediate files\n"), stdout);
3259 fputs (_(" -time Time the execution of each subprocess\n"), stdout);
3260 fputs (_(" -specs=<file> Override built-in specs with the contents of <file>\n"), stdout);
3261 fputs (_(" -std=<standard> Assume that the input sources are for <standard>\n"), stdout);
3263 --sysroot=<directory> Use <directory> as the root directory for headers\n\
3264 and libraries\n"), stdout);
3265 fputs (_(" -B <directory> Add <directory> to the compiler's search paths\n"), stdout);
3266 fputs (_(" -b <machine> Run gcc for target <machine>, if installed\n"), stdout);
3267 fputs (_(" -V <version> Run gcc version number <version>, if installed\n"), stdout);
3268 fputs (_(" -v Display the programs invoked by the compiler\n"), stdout);
3269 fputs (_(" -### Like -v but options quoted and commands not executed\n"), stdout);
3270 fputs (_(" -E Preprocess only; do not compile, assemble or link\n"), stdout);
3271 fputs (_(" -S Compile only; do not assemble or link\n"), stdout);
3272 fputs (_(" -c Compile and assemble, but do not link\n"), stdout);
3273 fputs (_(" -o <file> Place the output into <file>\n"), stdout);
3275 -x <language> Specify the language of the following input files\n\
3276 Permissible languages include: c c++ assembler none\n\
3277 'none' means revert to the default behavior of\n\
3278 guessing the language based on the file's extension\n\
3282 \nOptions starting with -g, -f, -m, -O, -W, or --param are automatically\n\
3283 passed on to the various sub-processes invoked by %s. In order to pass\n\
3284 other options on to these processes the -W<letter> options must be used.\n\
3287 /* The rest of the options are displayed by invocations of the various
3292 add_preprocessor_option (const char *option, int len)
3294 n_preprocessor_options++;
3296 if (! preprocessor_options)
3297 preprocessor_options = XNEWVEC (char *, n_preprocessor_options);
3299 preprocessor_options = XRESIZEVEC (char *, preprocessor_options,
3300 n_preprocessor_options);
3302 preprocessor_options [n_preprocessor_options - 1] =
3303 save_string (option, len);
3307 add_assembler_option (const char *option, int len)
3309 n_assembler_options++;
3311 if (! assembler_options)
3312 assembler_options = XNEWVEC (char *, n_assembler_options);
3314 assembler_options = XRESIZEVEC (char *, assembler_options,
3315 n_assembler_options);
3317 assembler_options [n_assembler_options - 1] = save_string (option, len);
3321 add_linker_option (const char *option, int len)
3325 if (! linker_options)
3326 linker_options = XNEWVEC (char *, n_linker_options);
3328 linker_options = XRESIZEVEC (char *, linker_options, n_linker_options);
3330 linker_options [n_linker_options - 1] = save_string (option, len);
3333 /* Create the vector `switches' and its contents.
3334 Store its length in `n_switches'. */
3337 process_command (int argc, const char **argv)
3342 const char *spec_lang = 0;
3343 int last_language_n_infiles;
3344 int lang_n_infiles = 0;
3345 #ifdef MODIFY_TARGET_NAME
3346 int is_modify_target_name;
3349 const char *tooldir_prefix;
3351 GET_ENVIRONMENT (gcc_exec_prefix, "GCC_EXEC_PREFIX");
3355 added_libraries = 0;
3357 /* Figure compiler version from version string. */
3359 compiler_version = temp1 = xstrdup (version_string);
3361 for (; *temp1; ++temp1)
3370 /* If there is a -V or -b option (or both), process it now, before
3371 trying to interpret the rest of the command line.
3372 Use heuristic that all configuration names must have at least
3373 one dash '-'. This allows us to pass options starting with -b. */
3374 if (argc > 1 && argv[1][0] == '-'
3375 && (argv[1][1] == 'V'
3376 || (argv[1][1] == 'b'
3377 && (argv[1][2] == '\0'
3378 || NULL != strchr (argv[1] + 2, '-')))))
3380 const char *new_version = DEFAULT_TARGET_VERSION;
3381 const char *new_machine = DEFAULT_TARGET_MACHINE;
3382 const char *progname = argv[0];
3390 while (argc > 1 && argv[1][0] == '-'
3391 && (argv[1][1] == 'V'
3392 || (argv[1][1] == 'b'
3393 && (argv[1][2] == '\0'
3394 || NULL != strchr (argv[1] + 2, '-')))))
3396 char opt = argv[1][1];
3398 if (argv[1][2] != '\0')
3411 fatal ("'-%c' option must have argument", opt);
3418 for (baselen = strlen (progname); baselen > 0; baselen--)
3419 if (IS_DIR_SEPARATOR (progname[baselen-1]))
3421 new_argv0 = XDUPVAR (char, progname, baselen,
3422 baselen + concat_length (new_version, new_machine,
3423 "-gcc-", NULL) + 1);
3424 strcpy (new_argv0 + baselen, new_machine);
3425 strcat (new_argv0, "-gcc-");
3426 strcat (new_argv0, new_version);
3428 new_argv = XDUPVEC (char *, argv, argc + 1);
3429 new_argv[0] = new_argv0;
3431 errmsg = pex_one (PEX_SEARCH, new_argv0, new_argv, progname, NULL,
3432 NULL, &status, &err);
3437 fatal ("couldn't run '%s': %s", new_argv0, errmsg);
3439 fatal ("couldn't run '%s': %s: %s", new_argv0, errmsg,
3445 /* Set up the default search paths. If there is no GCC_EXEC_PREFIX,
3446 see if we can create it from the pathname specified in argv[0]. */
3448 gcc_libexec_prefix = standard_libexec_prefix;
3450 /* FIXME: make_relative_prefix doesn't yet work for VMS. */
3451 if (!gcc_exec_prefix)
3453 gcc_exec_prefix = make_relative_prefix (argv[0], standard_bindir_prefix,
3454 standard_exec_prefix);
3455 gcc_libexec_prefix = make_relative_prefix (argv[0],
3456 standard_bindir_prefix,
3457 standard_libexec_prefix);
3458 if (gcc_exec_prefix)
3459 xputenv (concat ("GCC_EXEC_PREFIX=", gcc_exec_prefix, NULL));
3463 /* make_relative_prefix requires a program name, but
3464 GCC_EXEC_PREFIX is typically a directory name with a trailing
3465 / (which is ignored by make_relative_prefix), so append a
3467 char *tmp_prefix = concat (gcc_exec_prefix, "gcc", NULL);
3468 gcc_libexec_prefix = make_relative_prefix (tmp_prefix,
3469 standard_exec_prefix,
3470 standard_libexec_prefix);
3472 /* The path is unrelocated, so fallback to the original setting. */
3473 if (!gcc_libexec_prefix)
3474 gcc_libexec_prefix = standard_libexec_prefix;
3480 /* From this point onward, gcc_exec_prefix is non-null if the toolchain
3481 is relocated. The toolchain was either relocated using GCC_EXEC_PREFIX
3482 or an automatically created GCC_EXEC_PREFIX from argv[0]. */
3484 if (gcc_exec_prefix)
3486 int len = strlen (gcc_exec_prefix);
3488 if (len > (int) sizeof ("/lib/gcc/") - 1
3489 && (IS_DIR_SEPARATOR (gcc_exec_prefix[len-1])))
3491 temp = gcc_exec_prefix + len - sizeof ("/lib/gcc/") + 1;
3492 if (IS_DIR_SEPARATOR (*temp)
3493 && strncmp (temp + 1, "lib", 3) == 0
3494 && IS_DIR_SEPARATOR (temp[4])
3495 && strncmp (temp + 5, "gcc", 3) == 0)
3496 len -= sizeof ("/lib/gcc/") - 1;
3499 set_std_prefix (gcc_exec_prefix, len);
3500 add_prefix (&exec_prefixes, gcc_libexec_prefix, "GCC",
3501 PREFIX_PRIORITY_LAST, 0, 0);
3502 add_prefix (&startfile_prefixes, gcc_exec_prefix, "GCC",
3503 PREFIX_PRIORITY_LAST, 0, 0);
3506 /* COMPILER_PATH and LIBRARY_PATH have values
3507 that are lists of directory names with colons. */
3509 GET_ENVIRONMENT (temp, "COMPILER_PATH");
3512 const char *startp, *endp;
3513 char *nstore = (char *) alloca (strlen (temp) + 3);
3515 startp = endp = temp;
3518 if (*endp == PATH_SEPARATOR || *endp == 0)
3520 strncpy (nstore, startp, endp - startp);
3522 strcpy (nstore, concat (".", dir_separator_str, NULL));
3523 else if (!IS_DIR_SEPARATOR (endp[-1]))
3525 nstore[endp - startp] = DIR_SEPARATOR;
3526 nstore[endp - startp + 1] = 0;
3529 nstore[endp - startp] = 0;
3530 add_prefix (&exec_prefixes, nstore, 0,
3531 PREFIX_PRIORITY_LAST, 0, 0);
3532 add_prefix (&include_prefixes, nstore, 0,
3533 PREFIX_PRIORITY_LAST, 0, 0);
3536 endp = startp = endp + 1;
3543 GET_ENVIRONMENT (temp, LIBRARY_PATH_ENV);
3544 if (temp && *cross_compile == '0')
3546 const char *startp, *endp;
3547 char *nstore = (char *) alloca (strlen (temp) + 3);
3549 startp = endp = temp;
3552 if (*endp == PATH_SEPARATOR || *endp == 0)
3554 strncpy (nstore, startp, endp - startp);
3556 strcpy (nstore, concat (".", dir_separator_str, NULL));
3557 else if (!IS_DIR_SEPARATOR (endp[-1]))