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
4 Free Software Foundation, Inc.
6 This file is part of GCC.
8 GCC is free software; you can redistribute it and/or modify it under
9 the terms of the GNU General Public License as published by the Free
10 Software Foundation; either version 3, or (at your option) any later
13 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
14 WARRANTY; without even the implied warranty of MERCHANTABILITY or
15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
18 You should have received a copy of the GNU General Public License
19 along with GCC; see the file COPYING3. If not see
20 <http://www.gnu.org/licenses/>.
22 This paragraph is here to try to keep Sun CC from dying.
23 The number of chars here seems crucial!!!! */
25 /* This program is the user interface to the C compiler and possibly to
26 other compilers. It is used because compilation is a complicated procedure
27 which involves running several programs and passing temporary files between
28 them, forwarding the users switches to those programs selectively,
29 and deleting the temporary files at the end.
31 CC recognizes how to compile each input file by suffixes in the file names.
32 Once it knows which kind of compilation to perform, the procedure for
33 compilation is specified by a string called a "spec". */
35 /* A Short Introduction to Adding a Command-Line Option.
37 Before adding a command-line option, consider if it is really
38 necessary. Each additional command-line option adds complexity and
39 is difficult to remove in subsequent versions.
41 In the following, consider adding the command-line argument
44 1. Each command-line option is specified in the specs file. The
45 notation is described below in the comment entitled "The Specs
48 2. In this file, add an entry to "option_map" equating the long
49 `--' argument version and any shorter, single letter version. Read
50 the comments in the declaration of "struct option_map" for an
51 explanation. Do not omit the first `-'.
53 3. Look in the "specs" file to determine which program or option
54 list should be given the argument, e.g., "cc1_options". Add the
55 appropriate syntax for the shorter option version to the
56 corresponding "const char *" entry in this file. Omit the first
57 `-' from the option. For example, use `-bar', rather than `--bar'.
59 4. If the argument takes an argument, e.g., `--baz argument1',
60 modify either DEFAULT_SWITCH_TAKES_ARG or
61 DEFAULT_WORD_SWITCH_TAKES_ARG in gcc.h. Omit the first `-'
64 5. Document the option in this file's display_help(). If the
65 option is passed to a subprogram, modify its corresponding
66 function, e.g., cppinit.c:print_help() or toplev.c:display_help(),
69 6. Compile and test. Make sure that your new specs file is being
70 read. For example, use a debugger to investigate the value of
71 "specs_file" in main(). */
75 #include "coretypes.h"
76 #include "multilib.h" /* before tm.h */
79 #if ! defined( SIGCHLD ) && defined( SIGCLD )
80 # define SIGCHLD SIGCLD
90 /* By default there is no special suffix for target executables. */
91 /* FIXME: when autoconf is fixed, remove the host check - dj */
92 #if defined(TARGET_EXECUTABLE_SUFFIX) && defined(HOST_EXECUTABLE_SUFFIX)
93 #define HAVE_TARGET_EXECUTABLE_SUFFIX
96 /* By default there is no special suffix for host executables. */
97 #ifdef HOST_EXECUTABLE_SUFFIX
98 #define HAVE_HOST_EXECUTABLE_SUFFIX
100 #define HOST_EXECUTABLE_SUFFIX ""
103 /* By default, the suffix for target object files is ".o". */
104 #ifdef TARGET_OBJECT_SUFFIX
105 #define HAVE_TARGET_OBJECT_SUFFIX
107 #define TARGET_OBJECT_SUFFIX ".o"
110 static const char dir_separator_str[] = { DIR_SEPARATOR, 0 };
112 /* Most every one is fine with LIBRARY_PATH. For some, it conflicts. */
113 #ifndef LIBRARY_PATH_ENV
114 #define LIBRARY_PATH_ENV "LIBRARY_PATH"
118 #define kill(p,s) raise(s)
121 /* If a stage of compilation returns an exit status >= 1,
122 compilation of that file ceases. */
124 #define MIN_FATAL_STATUS 1
126 /* Flag set by cppspec.c to 1. */
129 /* Flag set to nonzero if an @file argument has been supplied to gcc. */
130 static bool at_file_supplied;
132 /* Flag saying to pass the greatest exit code returned by a sub-process
133 to the calling program. */
134 static int pass_exit_codes;
136 /* Definition of string containing the arguments given to configure. */
137 #include "configargs.h"
139 /* Flag saying to print the directories gcc will search through looking for
140 programs, libraries, etc. */
142 static int print_search_dirs;
144 /* Flag saying to print the full filename of this file
145 as found through our usual search mechanism. */
147 static const char *print_file_name = NULL;
149 /* As print_file_name, but search for executable file. */
151 static const char *print_prog_name = NULL;
153 /* Flag saying to print the relative path we'd use to
154 find libgcc.a given the current compiler flags. */
156 static int print_multi_directory;
158 /* Flag saying to print the relative path we'd use to
159 find OS libraries given the current compiler flags. */
161 static int print_multi_os_directory;
163 /* Flag saying to print the list of subdirectories and
164 compiler flags used to select them in a standard form. */
166 static int print_multi_lib;
168 /* Flag saying to print the command line options understood by gcc and its
171 static int print_help_list;
173 /* Flag saying to print the sysroot suffix used for searching for
176 static int print_sysroot_headers_suffix;
178 /* Flag indicating whether we should print the command and arguments */
180 static int verbose_flag;
182 /* Flag indicating whether we should ONLY print the command and
183 arguments (like verbose_flag) without executing the command.
184 Displayed arguments are quoted so that the generated command
185 line is suitable for execution. This is intended for use in
186 shell scripts to capture the driver-generated command line. */
187 static int verbose_only_flag;
189 /* Flag indicating how to print command line options of sub-processes. */
191 static int print_subprocess_help;
193 /* Flag indicating whether we should report subprocess execution times
194 (if this is supported by the system - see pexecute.c). */
196 static int report_times;
198 /* Nonzero means place this string before uses of /, so that include
199 and library files can be found in an alternate location. */
201 #ifdef TARGET_SYSTEM_ROOT
202 static const char *target_system_root = TARGET_SYSTEM_ROOT;
204 static const char *target_system_root = 0;
207 /* Nonzero means pass the updated target_system_root to the compiler. */
209 static int target_system_root_changed;
211 /* Nonzero means append this string to target_system_root. */
213 static const char *target_sysroot_suffix = 0;
215 /* Nonzero means append this string to target_system_root for headers. */
217 static const char *target_sysroot_hdrs_suffix = 0;
219 /* Nonzero means write "temp" files in source directory
220 and use the source file's name in them, and don't delete them. */
222 static int save_temps_flag;
224 /* Nonzero means pass multiple source files to the compiler at one time. */
226 static int combine_flag = 0;
228 /* Nonzero means use pipes to communicate between subprocesses.
229 Overridden by either of the above two flags. */
231 static int use_pipes;
233 /* The compiler version. */
235 static const char *compiler_version;
237 /* The target version specified with -V */
239 static const char *const spec_version = DEFAULT_TARGET_VERSION;
241 /* The target machine specified with -b. */
243 static const char *spec_machine = DEFAULT_TARGET_MACHINE;
245 /* Nonzero if cross-compiling.
246 When -b is used, the value comes from the `specs' file. */
248 #ifdef CROSS_DIRECTORY_STRUCTURE
249 static const char *cross_compile = "1";
251 static const char *cross_compile = "0";
254 #ifdef MODIFY_TARGET_NAME
256 /* Information on how to alter the target name based on a command-line
257 switch. The only case we support now is simply appending or deleting a
258 string to or from the end of the first part of the configuration name. */
260 static const struct modify_target
262 const char *const sw;
263 const enum add_del {ADD, DELETE} add_del;
264 const char *const str;
266 modify_target[] = MODIFY_TARGET_NAME;
269 /* The number of errors that have occurred; the link phase will not be
270 run if this is nonzero. */
271 static int error_count = 0;
273 /* Greatest exit code of sub-processes that has been encountered up to
275 static int greatest_status = 1;
277 /* This is the obstack which we use to allocate many strings. */
279 static struct obstack obstack;
281 /* This is the obstack to build an environment variable to pass to
282 collect2 that describes all of the relevant switches of what to
283 pass the compiler in building the list of pointers to constructors
286 static struct obstack collect_obstack;
288 /* This is a list of a wrapper program and its arguments.
289 e.g. wrapper_string of "strace,-c"
290 will cause all programs to run as
291 strace -c program arguments
294 static const char *wrapper_string;
296 /* Forward declaration for prototypes. */
300 static void init_spec (void);
301 static void store_arg (const char *, int, int);
302 static void insert_wrapper (const char *);
303 static char *load_specs (const char *);
304 static void read_specs (const char *, int);
305 static void set_spec (const char *, const char *);
306 static struct compiler *lookup_compiler (const char *, size_t, const char *);
307 static char *build_search_list (const struct path_prefix *, const char *,
309 static void xputenv (const char *);
310 static void putenv_from_prefixes (const struct path_prefix *, const char *,
312 static int access_check (const char *, int);
313 static char *find_a_file (const struct path_prefix *, const char *, int, bool);
314 static void add_prefix (struct path_prefix *, const char *, const char *,
316 static void add_sysrooted_prefix (struct path_prefix *, const char *,
317 const char *, int, int, int);
318 static void translate_options (int *, const char *const **);
319 static char *skip_whitespace (char *);
320 static void delete_if_ordinary (const char *);
321 static void delete_temp_files (void);
322 static void delete_failure_queue (void);
323 static void clear_failure_queue (void);
324 static int check_live_switch (int, int);
325 static const char *handle_braces (const char *);
326 static inline bool input_suffix_matches (const char *, const char *);
327 static inline bool switch_matches (const char *, const char *, int);
328 static inline void mark_matching_switches (const char *, const char *, int);
329 static inline void process_marked_switches (void);
330 static const char *process_brace_body (const char *, const char *, const char *, int, int);
331 static const struct spec_function *lookup_spec_function (const char *);
332 static const char *eval_spec_function (const char *, const char *);
333 static const char *handle_spec_function (const char *);
334 static char *save_string (const char *, int);
335 static void set_collect_gcc_options (void);
336 static int do_spec_1 (const char *, int, const char *);
337 static int do_spec_2 (const char *);
338 static void do_option_spec (const char *, const char *);
339 static void do_self_spec (const char *);
340 static const char *find_file (const char *);
341 static int is_directory (const char *, bool);
342 static const char *validate_switches (const char *);
343 static void validate_all_switches (void);
344 static inline void validate_switches_from_spec (const char *);
345 static void give_switch (int, int);
346 static int used_arg (const char *, int);
347 static int default_arg (const char *, int);
348 static void set_multilib_dir (void);
349 static void print_multilib_info (void);
350 static void perror_with_name (const char *);
351 static void fatal_ice (const char *, ...) ATTRIBUTE_PRINTF_1 ATTRIBUTE_NORETURN;
352 static void notice (const char *, ...) ATTRIBUTE_PRINTF_1;
353 static void display_help (void);
354 static void add_preprocessor_option (const char *, int);
355 static void add_assembler_option (const char *, int);
356 static void add_linker_option (const char *, int);
357 static void process_command (int, const char **);
358 static int execute (void);
359 static void alloc_args (void);
360 static void clear_args (void);
361 static void fatal_error (int);
362 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
363 static void init_gcc_specs (struct obstack *, const char *, const char *,
366 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
367 static const char *convert_filename (const char *, int, int);
370 static const char *getenv_spec_function (int, const char **);
371 static const char *if_exists_spec_function (int, const char **);
372 static const char *if_exists_else_spec_function (int, const char **);
373 static const char *replace_outfile_spec_function (int, const char **);
374 static const char *version_compare_spec_function (int, const char **);
375 static const char *include_spec_function (int, const char **);
376 static const char *print_asm_header_spec_function (int, const char **);
378 /* The Specs Language
380 Specs are strings containing lines, each of which (if not blank)
381 is made up of a program name, and arguments separated by spaces.
382 The program name must be exact and start from root, since no path
383 is searched and it is unreliable to depend on the current working directory.
384 Redirection of input or output is not supported; the subprograms must
385 accept filenames saying what files to read and write.
387 In addition, the specs can contain %-sequences to substitute variable text
388 or for conditional text. Here is a table of all defined %-sequences.
389 Note that spaces are not generated automatically around the results of
390 expanding these sequences; therefore, you can concatenate them together
391 or with constant text in a single argument.
393 %% substitute one % into the program name or argument.
394 %i substitute the name of the input file being processed.
395 %b substitute the basename of the input file being processed.
396 This is the substring up to (and not including) the last period
397 and not including the directory.
398 %B same as %b, but include the file suffix (text after the last period).
400 substitute a file name that has suffix SUFFIX and is chosen
401 once per compilation, and mark the argument a la %d. To reduce
402 exposure to denial-of-service attacks, the file name is now
403 chosen in a way that is hard to predict even when previously
404 chosen file names are known. For example, `%g.s ... %g.o ... %g.s'
405 might turn into `ccUVUUAU.s ccXYAXZ12.o ccUVUUAU.s'. SUFFIX matches
406 the regexp "[.0-9A-Za-z]*%O"; "%O" is treated exactly as if it
407 had been pre-processed. Previously, %g was simply substituted
408 with a file name chosen once per compilation, without regard
409 to any appended suffix (which was therefore treated just like
410 ordinary text), making such attacks more likely to succeed.
412 like %g, but if -pipe is in effect, expands simply to "-".
414 like %g, but if -pipe is in effect, expands to nothing. (We have both
415 %| and %m to accommodate differences between system assemblers; see
416 the AS_NEEDS_DASH_FOR_PIPED_INPUT target macro.)
418 like %g, but generates a new temporary file name even if %uSUFFIX
421 substitutes the last file name generated with %uSUFFIX, generating a
422 new one if there is no such last file name. In the absence of any
423 %uSUFFIX, this is just like %gSUFFIX, except they don't share
424 the same suffix "space", so `%g.s ... %U.s ... %g.s ... %U.s'
425 would involve the generation of two distinct file names, one
426 for each `%g.s' and another for each `%U.s'. Previously, %U was
427 simply substituted with a file name chosen for the previous %u,
428 without regard to any appended suffix.
430 substitutes the name of the HOST_BIT_BUCKET, if any, and if it is
431 writable, and if save-temps is off; otherwise, substitute the name
432 of a temporary file, just like %u. This temporary file is not
433 meant for communication between processes, but rather as a junk
436 substitutes .SUFFIX for the suffixes of a matched switch's args when
437 it is subsequently output with %*. SUFFIX is terminated by the next
439 %d marks the argument containing or following the %d as a
440 temporary file name, so that that file will be deleted if CC exits
441 successfully. Unlike %g, this contributes no text to the argument.
442 %w marks the argument containing or following the %w as the
443 "output file" of this compilation. This puts the argument
444 into the sequence of arguments that %o will substitute later.
445 %V indicates that this compilation produces no "output file".
447 like %{...} but mark last argument supplied within
448 as a file to be deleted on failure.
449 %o substitutes the names of all the output files, with spaces
450 automatically placed around them. You should write spaces
451 around the %o as well or the results are undefined.
452 %o is for use in the specs for running the linker.
453 Input files whose names have no recognized suffix are not compiled
454 at all, but they are included among the output files, so they will
456 %O substitutes the suffix for object files. Note that this is
457 handled specially when it immediately follows %g, %u, or %U
458 (with or without a suffix argument) because of the need for
459 those to form complete file names. The handling is such that
460 %O is treated exactly as if it had already been substituted,
461 except that %g, %u, and %U do not currently support additional
462 SUFFIX characters following %O as they would following, for
464 %I Substitute any of -iprefix (made from GCC_EXEC_PREFIX), -isysroot
465 (made from TARGET_SYSTEM_ROOT), -isystem (made from COMPILER_PATH
466 and -B options) and -imultilib as necessary.
467 %s current argument is the name of a library or startup file of some sort.
468 Search for that file in a standard list of directories
469 and substitute the full name found.
470 %eSTR Print STR as an error message. STR is terminated by a newline.
471 Use this when inconsistent options are detected.
472 %nSTR Print STR as a notice. STR is terminated by a newline.
473 %x{OPTION} Accumulate an option for %X.
474 %X Output the accumulated linker options specified by compilations.
475 %Y Output the accumulated assembler options specified by compilations.
476 %Z Output the accumulated preprocessor options specified by compilations.
477 %a process ASM_SPEC as a spec.
478 This allows config.h to specify part of the spec for running as.
479 %A process ASM_FINAL_SPEC as a spec. A capital A is actually
480 used here. This can be used to run a post-processor after the
481 assembler has done its job.
482 %D Dump out a -L option for each directory in startfile_prefixes.
483 If multilib_dir is set, extra entries are generated with it affixed.
484 %l process LINK_SPEC as a spec.
485 %L process LIB_SPEC as a spec.
486 %G process LIBGCC_SPEC as a spec.
487 %R Output the concatenation of target_system_root and
488 target_sysroot_suffix.
489 %S process STARTFILE_SPEC as a spec. A capital S is actually used here.
490 %E process ENDFILE_SPEC as a spec. A capital E is actually used here.
491 %C process CPP_SPEC as a spec.
492 %1 process CC1_SPEC as a spec.
493 %2 process CC1PLUS_SPEC as a spec.
494 %* substitute the variable part of a matched option. (See below.)
495 Note that each comma in the substituted string is replaced by
497 %<S remove all occurrences of -S from the command line.
498 Note - this command is position dependent. % commands in the
499 spec string before this one will see -S, % commands in the
500 spec string after this one will not.
501 %<S* remove all occurrences of all switches beginning with -S from the
504 Call the named function FUNCTION, passing it ARGS. ARGS is
505 first processed as a nested spec string, then split into an
506 argument vector in the usual fashion. The function returns
507 a string which is processed as if it had appeared literally
508 as part of the current spec.
509 %{S} substitutes the -S switch, if that switch was given to CC.
510 If that switch was not specified, this substitutes nothing.
511 Here S is a metasyntactic variable.
512 %{S*} substitutes all the switches specified to CC whose names start
513 with -S. This is used for -o, -I, etc; switches that take
514 arguments. CC considers `-o foo' as being one switch whose
515 name starts with `o'. %{o*} would substitute this text,
516 including the space; thus, two arguments would be generated.
517 %{S*&T*} likewise, but preserve order of S and T options (the order
518 of S and T in the spec is not significant). Can be any number
519 of ampersand-separated variables; for each the wild card is
520 optional. Useful for CPP as %{D*&U*&A*}.
522 %{S:X} substitutes X, if the -S switch was given to CC.
523 %{!S:X} substitutes X, if the -S switch was NOT given to CC.
524 %{S*:X} substitutes X if one or more switches whose names start
525 with -S was given to CC. Normally X is substituted only
526 once, no matter how many such switches appeared. However,
527 if %* appears somewhere in X, then X will be substituted
528 once for each matching switch, with the %* replaced by the
529 part of that switch that matched the '*'.
530 %{.S:X} substitutes X, if processing a file with suffix S.
531 %{!.S:X} substitutes X, if NOT processing a file with suffix S.
532 %{,S:X} substitutes X, if processing a file which will use spec S.
533 %{!,S:X} substitutes X, if NOT processing a file which will use spec S.
535 %{S|T:X} substitutes X if either -S or -T was given to CC. This may be
536 combined with '!', '.', ',', and '*' as above binding stronger
538 If %* appears in X, all of the alternatives must be starred, and
539 only the first matching alternative is substituted.
540 %{S:X; if S was given to CC, substitutes X;
541 T:Y; else if T was given to CC, substitutes Y;
542 :D} else substitutes D. There can be as many clauses as you need.
543 This may be combined with '.', '!', ',', '|', and '*' as above.
545 %(Spec) processes a specification defined in a specs file as *Spec:
546 %[Spec] as above, but put __ around -D arguments
548 The conditional text X in a %{S:X} or similar construct may contain
549 other nested % constructs or spaces, or even newlines. They are
550 processed as usual, as described above. Trailing white space in X is
551 ignored. White space may also appear anywhere on the left side of the
552 colon in these constructs, except between . or * and the corresponding
555 The -O, -f, -m, and -W switches are handled specifically in these
556 constructs. If another value of -O or the negated form of a -f, -m, or
557 -W switch is found later in the command line, the earlier switch
558 value is ignored, except with {S*} where S is just one letter; this
559 passes all matching options.
561 The character | at the beginning of the predicate text is used to indicate
562 that a command should be piped to the following command, but only if -pipe
565 Note that it is built into CC which switches take arguments and which
566 do not. You might think it would be useful to generalize this to
567 allow each compiler's spec to say which switches take arguments. But
568 this cannot be done in a consistent fashion. CC cannot even decide
569 which input files have been specified without knowing which switches
570 take arguments, and it must know which input files to compile in order
571 to tell which compilers to run.
573 CC also knows implicitly that arguments starting in `-l' are to be
574 treated as compiler output files, and passed to the linker in their
575 proper position among the other output files. */
577 /* Define the macros used for specs %a, %l, %L, %S, %C, %1. */
579 /* config.h can define ASM_SPEC to provide extra args to the assembler
580 or extra switch-translations. */
585 /* config.h can define ASM_FINAL_SPEC to run a post processor after
586 the assembler has run. */
587 #ifndef ASM_FINAL_SPEC
588 #define ASM_FINAL_SPEC ""
591 /* config.h can define CPP_SPEC to provide extra args to the C preprocessor
592 or extra switch-translations. */
597 /* config.h can define CC1_SPEC to provide extra args to cc1 and cc1plus
598 or extra switch-translations. */
603 /* config.h can define CC1PLUS_SPEC to provide extra args to cc1plus
604 or extra switch-translations. */
606 #define CC1PLUS_SPEC ""
609 /* config.h can define LINK_SPEC to provide extra args to the linker
610 or extra switch-translations. */
615 /* config.h can define LIB_SPEC to override the default libraries. */
617 #define LIB_SPEC "%{!shared:%{g*:-lg} %{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p}}"
622 /* XXX: valid only for GNU ld */
623 /* XXX: should exactly match hooks provided by libmudflap.a */
624 #define MFWRAP_SPEC " %{static: %{fmudflap|fmudflapth: \
625 --wrap=malloc --wrap=free --wrap=calloc --wrap=realloc\
626 --wrap=mmap --wrap=munmap --wrap=alloca\
627 } %{fmudflapth: --wrap=pthread_create\
628 }} %{fmudflap|fmudflapth: --wrap=main}"
631 #define MFLIB_SPEC "%{fmudflap|fmudflapth: -export-dynamic}"
634 /* config.h can define LIBGCC_SPEC to override how and when libgcc.a is
637 #if defined(REAL_LIBGCC_SPEC)
638 #define LIBGCC_SPEC REAL_LIBGCC_SPEC
639 #elif defined(LINK_LIBGCC_SPECIAL_1)
640 /* Have gcc do the search for libgcc.a. */
641 #define LIBGCC_SPEC "libgcc.a%s"
643 #define LIBGCC_SPEC "-lgcc"
647 /* config.h can define STARTFILE_SPEC to override the default crt0 files. */
648 #ifndef STARTFILE_SPEC
649 #define STARTFILE_SPEC \
650 "%{!shared:%{pg:gcrt0%O%s}%{!pg:%{p:mcrt0%O%s}%{!p:crt0%O%s}}}"
653 /* config.h can define SWITCHES_NEED_SPACES to control which options
654 require spaces between the option and the argument. */
655 #ifndef SWITCHES_NEED_SPACES
656 #define SWITCHES_NEED_SPACES ""
659 /* config.h can define ENDFILE_SPEC to override the default crtn files. */
661 #define ENDFILE_SPEC ""
665 #define LINKER_NAME "collect2"
668 #ifdef HAVE_AS_DEBUG_PREFIX_MAP
669 #define ASM_MAP " %{fdebug-prefix-map=*:--debug-prefix-map %*}"
674 /* Define ASM_DEBUG_SPEC to be a spec suitable for translating '-g'
676 #ifndef ASM_DEBUG_SPEC
677 # if defined(DBX_DEBUGGING_INFO) && defined(DWARF2_DEBUGGING_INFO) \
678 && defined(HAVE_AS_GDWARF2_DEBUG_FLAG) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
679 # define ASM_DEBUG_SPEC \
680 (PREFERRED_DEBUGGING_TYPE == DBX_DEBUG \
681 ? "%{gdwarf-2*:--gdwarf2}%{!gdwarf-2*:%{g*:--gstabs}}" ASM_MAP \
682 : "%{gstabs*:--gstabs}%{!gstabs*:%{g*:--gdwarf2}}" ASM_MAP)
684 # if defined(DBX_DEBUGGING_INFO) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
685 # define ASM_DEBUG_SPEC "%{g*:--gstabs}" ASM_MAP
687 # if defined(DWARF2_DEBUGGING_INFO) && defined(HAVE_AS_GDWARF2_DEBUG_FLAG)
688 # define ASM_DEBUG_SPEC "%{g*:--gdwarf2}" ASM_MAP
692 #ifndef ASM_DEBUG_SPEC
693 # define ASM_DEBUG_SPEC ""
696 /* Here is the spec for running the linker, after compiling all files. */
698 /* This is overridable by the target in case they need to specify the
699 -lgcc and -lc order specially, yet not require them to override all
700 of LINK_COMMAND_SPEC. */
701 #ifndef LINK_GCC_C_SEQUENCE_SPEC
702 #define LINK_GCC_C_SEQUENCE_SPEC "%G %L %G"
705 #ifndef LINK_SSP_SPEC
706 #ifdef TARGET_LIBC_PROVIDES_SSP
707 #define LINK_SSP_SPEC "%{fstack-protector:}"
709 #define LINK_SSP_SPEC "%{fstack-protector|fstack-protector-all:-lssp_nonshared -lssp}"
713 #ifndef LINK_PIE_SPEC
715 #define LINK_PIE_SPEC "%{pie:-pie} "
717 #define LINK_PIE_SPEC "%{pie:} "
721 /* -u* was put back because both BSD and SysV seem to support it. */
722 /* %{static:} simply prevents an error message if the target machine
723 doesn't handle -static. */
724 /* We want %{T*} after %{L*} and %D so that it can be used to specify linker
725 scripts which exist in user specified directories, or in standard
727 #ifndef LINK_COMMAND_SPEC
728 #define LINK_COMMAND_SPEC "\
729 %{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:\
730 %(linker) %l " LINK_PIE_SPEC "%X %{o*} %{A} %{d} %{e*} %{m} %{N} %{n} %{r}\
731 %{s} %{t} %{u*} %{x} %{z} %{Z} %{!A:%{!nostdlib:%{!nostartfiles:%S}}}\
732 %{static:} %{L*} %(mfwrap) %(link_libgcc) %o\
733 %{fopenmp|ftree-parallelize-loops=*:%:include(libgomp.spec)%(link_gomp)} %(mflib)\
734 %{fprofile-arcs|fprofile-generate|coverage:-lgcov}\
735 %{!nostdlib:%{!nodefaultlibs:%(link_ssp) %(link_gcc_c_sequence)}}\
736 %{!A:%{!nostdlib:%{!nostartfiles:%E}}} %{T*} }}}}}}"
739 #ifndef LINK_LIBGCC_SPEC
740 /* Generate -L options for startfile prefix list. */
741 # define LINK_LIBGCC_SPEC "%D"
744 #ifndef STARTFILE_PREFIX_SPEC
745 # define STARTFILE_PREFIX_SPEC ""
749 # define SYSROOT_SPEC "--sysroot=%R"
752 #ifndef SYSROOT_SUFFIX_SPEC
753 # define SYSROOT_SUFFIX_SPEC ""
756 #ifndef SYSROOT_HEADERS_SUFFIX_SPEC
757 # define SYSROOT_HEADERS_SUFFIX_SPEC ""
760 static const char *asm_debug;
761 static const char *cpp_spec = CPP_SPEC;
762 static const char *cc1_spec = CC1_SPEC;
763 static const char *cc1plus_spec = CC1PLUS_SPEC;
764 static const char *link_gcc_c_sequence_spec = LINK_GCC_C_SEQUENCE_SPEC;
765 static const char *link_ssp_spec = LINK_SSP_SPEC;
766 static const char *asm_spec = ASM_SPEC;
767 static const char *asm_final_spec = ASM_FINAL_SPEC;
768 static const char *link_spec = LINK_SPEC;
769 static const char *lib_spec = LIB_SPEC;
770 static const char *mfwrap_spec = MFWRAP_SPEC;
771 static const char *mflib_spec = MFLIB_SPEC;
772 static const char *link_gomp_spec = "";
773 static const char *libgcc_spec = LIBGCC_SPEC;
774 static const char *endfile_spec = ENDFILE_SPEC;
775 static const char *startfile_spec = STARTFILE_SPEC;
776 static const char *switches_need_spaces = SWITCHES_NEED_SPACES;
777 static const char *linker_name_spec = LINKER_NAME;
778 static const char *link_command_spec = LINK_COMMAND_SPEC;
779 static const char *link_libgcc_spec = LINK_LIBGCC_SPEC;
780 static const char *startfile_prefix_spec = STARTFILE_PREFIX_SPEC;
781 static const char *sysroot_spec = SYSROOT_SPEC;
782 static const char *sysroot_suffix_spec = SYSROOT_SUFFIX_SPEC;
783 static const char *sysroot_hdrs_suffix_spec = SYSROOT_HEADERS_SUFFIX_SPEC;
785 /* Standard options to cpp, cc1, and as, to reduce duplication in specs.
786 There should be no need to override these in target dependent files,
787 but we need to copy them to the specs file so that newer versions
788 of the GCC driver can correctly drive older tool chains with the
789 appropriate -B options. */
791 /* When cpplib handles traditional preprocessing, get rid of this, and
792 call cc1 (or cc1obj in objc/lang-specs.h) from the main specs so
793 that we default the front end language better. */
794 static const char *trad_capable_cpp =
795 "cc1 -E %{traditional|ftraditional|traditional-cpp:-traditional-cpp}";
797 /* We don't wrap .d files in %W{} since a missing .d file, and
798 therefore no dependency entry, confuses make into thinking a .o
799 file that happens to exist is up-to-date. */
800 static const char *cpp_unique_options =
801 "%{C|CC:%{!E:%eGCC does not support -C or -CC without -E}}\
802 %{!Q:-quiet} %{nostdinc*} %{C} %{CC} %{v} %{I*&F*} %{P} %I\
803 %{MD:-MD %{!o:%b.d}%{o*:%.d%*}}\
804 %{MMD:-MMD %{!o:%b.d}%{o*:%.d%*}}\
805 %{M} %{MM} %{MF*} %{MG} %{MP} %{MQ*} %{MT*}\
806 %{!E:%{!M:%{!MM:%{!MT:%{!MQ:%{MD|MMD:%{o*:-MQ %*}}}}}}}\
807 %{remap} %{g3|ggdb3|gstabs3|gcoff3|gxcoff3|gvms3:-dD}\
808 %{H} %C %{D*&U*&A*} %{i*} %Z %i\
809 %{fmudflap:-D_MUDFLAP -include mf-runtime.h}\
810 %{fmudflapth:-D_MUDFLAP -D_MUDFLAPTH -include mf-runtime.h}\
813 /* This contains cpp options which are common with cc1_options and are passed
814 only when preprocessing only to avoid duplication. We pass the cc1 spec
815 options to the preprocessor so that it the cc1 spec may manipulate
816 options used to set target flags. Those special target flags settings may
817 in turn cause preprocessor symbols to be defined specially. */
818 static const char *cpp_options =
819 "%(cpp_unique_options) %1 %{m*} %{std*&ansi&trigraphs} %{W*&pedantic*} %{w}\
820 %{f*} %{g*:%{!g0:%{!fno-working-directory:-fworking-directory}}} %{O*}\
821 %{undef} %{save-temps:-fpch-preprocess}";
823 /* This contains cpp options which are not passed when the preprocessor
824 output will be used by another program. */
825 static const char *cpp_debug_options = "%{d*}";
827 /* NB: This is shared amongst all front-ends. */
828 static const char *cc1_options =
829 "%{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\
830 %1 %{!Q:-quiet} -dumpbase %B %{d*} %{m*} %{a*}\
831 %{c|S:%{o*:-auxbase-strip %*}%{!o*:-auxbase %b}}%{!c:%{!S:-auxbase %b}}\
832 %{g*} %{O*} %{W*&pedantic*} %{w} %{std*&ansi&trigraphs}\
833 %{v:-version} %{pg:-p} %{p} %{f*} %{undef}\
834 %{Qn:-fno-ident} %{--help:--help}\
835 %{--target-help:--target-help}\
836 %{--help=*:--help=%(VALUE)}\
837 %{!fsyntax-only:%{S:%W{o*}%{!o*:-o %b.s}}}\
838 %{fsyntax-only:-o %j} %{-param*}\
839 %{fmudflap|fmudflapth:-fno-builtin -fno-merge-constants}\
840 %{coverage:-fprofile-arcs -ftest-coverage}";
842 static const char *asm_options =
843 "%{--target-help:%:print-asm-header()} "
845 /* If GNU AS is used, then convert -w (no warnings), -I, and -v
846 to the assembler equivalents. */
847 "%{v} %{w:-W} %{I*} "
849 "%a %Y %{c:%W{o*}%{!o*:-o %w%b%O}}%{!c:-o %d%w%u%O}";
851 static const char *invoke_as =
852 #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT
853 "%{!S:-o %|.s |\n as %(asm_options) %|.s %A }";
855 "%{!S:-o %|.s |\n as %(asm_options) %m.s %A }";
858 /* Some compilers have limits on line lengths, and the multilib_select
859 and/or multilib_matches strings can be very long, so we build them at
861 static struct obstack multilib_obstack;
862 static const char *multilib_select;
863 static const char *multilib_matches;
864 static const char *multilib_defaults;
865 static const char *multilib_exclusions;
867 /* Check whether a particular argument is a default argument. */
869 #ifndef MULTILIB_DEFAULTS
870 #define MULTILIB_DEFAULTS { "" }
873 static const char *const multilib_defaults_raw[] = MULTILIB_DEFAULTS;
875 #ifndef DRIVER_SELF_SPECS
876 #define DRIVER_SELF_SPECS ""
879 /* Adding -fopenmp should imply pthreads. This is particularly important
880 for targets that use different start files and suchlike. */
881 #ifndef GOMP_SELF_SPECS
882 #define GOMP_SELF_SPECS "%{fopenmp|ftree-parallelize-loops=*: -pthread}"
885 static const char *const driver_self_specs[] = {
886 DRIVER_SELF_SPECS, GOMP_SELF_SPECS
889 #ifndef OPTION_DEFAULT_SPECS
890 #define OPTION_DEFAULT_SPECS { "", "" }
899 static const struct default_spec
900 option_default_specs[] = { OPTION_DEFAULT_SPECS };
904 struct user_specs *next;
905 const char *filename;
908 static struct user_specs *user_specs_head, *user_specs_tail;
910 #ifndef SWITCH_TAKES_ARG
911 #define SWITCH_TAKES_ARG(CHAR) DEFAULT_SWITCH_TAKES_ARG(CHAR)
914 #ifndef WORD_SWITCH_TAKES_ARG
915 #define WORD_SWITCH_TAKES_ARG(STR) DEFAULT_WORD_SWITCH_TAKES_ARG (STR)
918 #ifdef HAVE_TARGET_EXECUTABLE_SUFFIX
919 /* This defines which switches stop a full compilation. */
920 #define DEFAULT_SWITCH_CURTAILS_COMPILATION(CHAR) \
921 ((CHAR) == 'c' || (CHAR) == 'S')
923 #ifndef SWITCH_CURTAILS_COMPILATION
924 #define SWITCH_CURTAILS_COMPILATION(CHAR) \
925 DEFAULT_SWITCH_CURTAILS_COMPILATION(CHAR)
929 /* Record the mapping from file suffixes for compilation specs. */
933 const char *suffix; /* Use this compiler for input files
934 whose names end in this suffix. */
936 const char *spec; /* To use this compiler, run this spec. */
938 const char *cpp_spec; /* If non-NULL, substitute this spec
939 for `%C', rather than the usual
941 const int combinable; /* If nonzero, compiler can deal with
942 multiple source files at once (IMA). */
943 const int needs_preprocessing; /* If nonzero, source files need to
944 be run through a preprocessor. */
947 /* Pointer to a vector of `struct compiler' that gives the spec for
948 compiling a file, based on its suffix.
949 A file that does not end in any of these suffixes will be passed
950 unchanged to the loader and nothing else will be done to it.
952 An entry containing two 0s is used to terminate the vector.
954 If multiple entries match a file, the last matching one is used. */
956 static struct compiler *compilers;
958 /* Number of entries in `compilers', not counting the null terminator. */
960 static int n_compilers;
962 /* The default list of file name suffixes and their compilation specs. */
964 static const struct compiler default_compilers[] =
966 /* Add lists of suffixes of known languages here. If those languages
967 were not present when we built the driver, we will hit these copies
968 and be given a more meaningful error than "file not used since
969 linking is not done". */
970 {".m", "#Objective-C", 0, 0, 0}, {".mi", "#Objective-C", 0, 0, 0},
971 {".mm", "#Objective-C++", 0, 0, 0}, {".M", "#Objective-C++", 0, 0, 0},
972 {".mii", "#Objective-C++", 0, 0, 0},
973 {".cc", "#C++", 0, 0, 0}, {".cxx", "#C++", 0, 0, 0},
974 {".cpp", "#C++", 0, 0, 0}, {".cp", "#C++", 0, 0, 0},
975 {".c++", "#C++", 0, 0, 0}, {".C", "#C++", 0, 0, 0},
976 {".CPP", "#C++", 0, 0, 0}, {".ii", "#C++", 0, 0, 0},
977 {".ads", "#Ada", 0, 0, 0}, {".adb", "#Ada", 0, 0, 0},
978 {".f", "#Fortran", 0, 0, 0}, {".F", "#Fortran", 0, 0, 0},
979 {".for", "#Fortran", 0, 0, 0}, {".FOR", "#Fortran", 0, 0, 0},
980 {".ftn", "#Fortran", 0, 0, 0}, {".FTN", "#Fortran", 0, 0, 0},
981 {".fpp", "#Fortran", 0, 0, 0}, {".FPP", "#Fortran", 0, 0, 0},
982 {".f90", "#Fortran", 0, 0, 0}, {".F90", "#Fortran", 0, 0, 0},
983 {".f95", "#Fortran", 0, 0, 0}, {".F95", "#Fortran", 0, 0, 0},
984 {".f03", "#Fortran", 0, 0, 0}, {".F03", "#Fortran", 0, 0, 0},
985 {".f08", "#Fortran", 0, 0, 0}, {".F08", "#Fortran", 0, 0, 0},
986 {".r", "#Ratfor", 0, 0, 0},
987 {".p", "#Pascal", 0, 0, 0}, {".pas", "#Pascal", 0, 0, 0},
988 {".java", "#Java", 0, 0, 0}, {".class", "#Java", 0, 0, 0},
989 {".zip", "#Java", 0, 0, 0}, {".jar", "#Java", 0, 0, 0},
990 /* Next come the entries for C. */
991 {".c", "@c", 0, 1, 1},
993 /* cc1 has an integrated ISO C preprocessor. We should invoke the
994 external preprocessor if -save-temps is given. */
995 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\
997 %{traditional|ftraditional:\
998 %eGNU C no longer supports -traditional without -E}\
1000 %{save-temps|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
1001 %(cpp_options) -o %{save-temps:%b.i} %{!save-temps:%g.i} \n\
1002 cc1 -fpreprocessed %{save-temps:%b.i} %{!save-temps:%g.i} \
1004 %{!save-temps:%{!traditional-cpp:%{!no-integrated-cpp:\
1005 cc1 %(cpp_unique_options) %(cc1_options)}}}\
1006 %{!fsyntax-only:%(invoke_as)}} \
1008 %{save-temps|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
1009 %(cpp_options) -o %{save-temps:%b.i} %{!save-temps:%g.i}}\
1010 %{!save-temps:%{!traditional-cpp:%{!no-integrated-cpp:\
1011 cc1 %(cpp_unique_options) %(cc1_options)}}\
1012 %{!fsyntax-only:%(invoke_as)}}}}}}", 0, 1, 1},
1014 "%{!E:%e-E or -x required when input is from standard input}\
1015 %(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)", 0, 0, 0},
1016 {".h", "@c-header", 0, 0, 0},
1018 /* cc1 has an integrated ISO C preprocessor. We should invoke the
1019 external preprocessor if -save-temps is given. */
1020 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\
1022 %{save-temps|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
1023 %(cpp_options) -o %{save-temps:%b.i} %{!save-temps:%g.i} \n\
1024 cc1 -fpreprocessed %{save-temps:%b.i} %{!save-temps:%g.i} \
1026 -o %g.s %{!o*:--output-pch=%i.gch}\
1027 %W{o*:--output-pch=%*}%V}\
1028 %{!save-temps:%{!traditional-cpp:%{!no-integrated-cpp:\
1029 cc1 %(cpp_unique_options) %(cc1_options)\
1030 -o %g.s %{!o*:--output-pch=%i.gch}\
1031 %W{o*:--output-pch=%*}%V}}}}}}", 0, 0, 0},
1032 {".i", "@cpp-output", 0, 1, 0},
1034 "%{!M:%{!MM:%{!E:cc1 -fpreprocessed %i %(cc1_options) %{!fsyntax-only:%(invoke_as)}}}}", 0, 1, 0},
1035 {".s", "@assembler", 0, 1, 0},
1037 "%{!M:%{!MM:%{!E:%{!S:as %(asm_debug) %(asm_options) %i %A }}}}", 0, 1, 0},
1038 {".sx", "@assembler-with-cpp", 0, 1, 0},
1039 {".S", "@assembler-with-cpp", 0, 1, 0},
1040 {"@assembler-with-cpp",
1041 #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT
1042 "%(trad_capable_cpp) -lang-asm %(cpp_options) -fno-directives-only\
1043 %{E|M|MM:%(cpp_debug_options)}\
1044 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\
1045 as %(asm_debug) %(asm_options) %|.s %A }}}}"
1047 "%(trad_capable_cpp) -lang-asm %(cpp_options) -fno-directives-only\
1048 %{E|M|MM:%(cpp_debug_options)}\
1049 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\
1050 as %(asm_debug) %(asm_options) %m.s %A }}}}"
1055 /* Mark end of table. */
1059 /* Number of elements in default_compilers, not counting the terminator. */
1061 static const int n_default_compilers = ARRAY_SIZE (default_compilers) - 1;
1063 /* A vector of options to give to the linker.
1064 These options are accumulated by %x,
1065 and substituted into the linker command with %X. */
1066 static int n_linker_options;
1067 static char **linker_options;
1069 /* A vector of options to give to the assembler.
1070 These options are accumulated by -Wa,
1071 and substituted into the assembler command with %Y. */
1072 static int n_assembler_options;
1073 static char **assembler_options;
1075 /* A vector of options to give to the preprocessor.
1076 These options are accumulated by -Wp,
1077 and substituted into the preprocessor command with %Z. */
1078 static int n_preprocessor_options;
1079 static char **preprocessor_options;
1081 /* Define how to map long options into short ones. */
1083 /* This structure describes one mapping. */
1086 /* The long option's name. */
1087 const char *const name;
1088 /* The equivalent short option. */
1089 const char *const equivalent;
1090 /* Argument info. A string of flag chars; NULL equals no options.
1091 a => argument required.
1092 o => argument optional.
1093 j => join argument to equivalent, making one word.
1094 * => require other text after NAME as an argument. */
1095 const char *const arg_info;
1098 /* This is the table of mappings. Mappings are tried sequentially
1099 for each option encountered; the first one that matches, wins. */
1101 static const struct option_map option_map[] =
1103 {"--all-warnings", "-Wall", 0},
1104 {"--ansi", "-ansi", 0},
1105 {"--assemble", "-S", 0},
1106 {"--assert", "-A", "a"},
1107 {"--classpath", "-fclasspath=", "aj"},
1108 {"--bootclasspath", "-fbootclasspath=", "aj"},
1109 {"--CLASSPATH", "-fclasspath=", "aj"},
1110 {"--combine", "-combine", 0},
1111 {"--comments", "-C", 0},
1112 {"--comments-in-macros", "-CC", 0},
1113 {"--compile", "-c", 0},
1114 {"--debug", "-g", "oj"},
1115 {"--define-macro", "-D", "aj"},
1116 {"--dependencies", "-M", 0},
1117 {"--dump", "-d", "a"},
1118 {"--dumpbase", "-dumpbase", "a"},
1119 {"--encoding", "-fencoding=", "aj"},
1120 {"--entry", "-e", 0},
1121 {"--extra-warnings", "-W", 0},
1122 {"--extdirs", "-fextdirs=", "aj"},
1123 {"--for-assembler", "-Wa", "a"},
1124 {"--for-linker", "-Xlinker", "a"},
1125 {"--force-link", "-u", "a"},
1126 {"--coverage", "-coverage", 0},
1127 {"--imacros", "-imacros", "a"},
1128 {"--include", "-include", "a"},
1129 {"--include-barrier", "-I-", 0},
1130 {"--include-directory", "-I", "aj"},
1131 {"--include-directory-after", "-idirafter", "a"},
1132 {"--include-prefix", "-iprefix", "a"},
1133 {"--include-with-prefix", "-iwithprefix", "a"},
1134 {"--include-with-prefix-before", "-iwithprefixbefore", "a"},
1135 {"--include-with-prefix-after", "-iwithprefix", "a"},
1136 {"--language", "-x", "a"},
1137 {"--library-directory", "-L", "a"},
1138 {"--machine", "-m", "aj"},
1139 {"--machine-", "-m", "*j"},
1140 {"--no-integrated-cpp", "-no-integrated-cpp", 0},
1141 {"--no-line-commands", "-P", 0},
1142 {"--no-precompiled-includes", "-noprecomp", 0},
1143 {"--no-standard-includes", "-nostdinc", 0},
1144 {"--no-standard-libraries", "-nostdlib", 0},
1145 {"--no-warnings", "-w", 0},
1146 {"--optimize", "-O", "oj"},
1147 {"--output", "-o", "a"},
1148 {"--output-class-directory", "-foutput-class-dir=", "ja"},
1149 {"--param", "--param", "a"},
1150 {"--pass-exit-codes", "-pass-exit-codes", 0},
1151 {"--pedantic", "-pedantic", 0},
1152 {"--pedantic-errors", "-pedantic-errors", 0},
1153 {"--pie", "-pie", 0},
1154 {"--pipe", "-pipe", 0},
1155 {"--prefix", "-B", "a"},
1156 {"--preprocess", "-E", 0},
1157 {"--print-search-dirs", "-print-search-dirs", 0},
1158 {"--print-file-name", "-print-file-name=", "aj"},
1159 {"--print-libgcc-file-name", "-print-libgcc-file-name", 0},
1160 {"--print-missing-file-dependencies", "-MG", 0},
1161 {"--print-multi-lib", "-print-multi-lib", 0},
1162 {"--print-multi-directory", "-print-multi-directory", 0},
1163 {"--print-multi-os-directory", "-print-multi-os-directory", 0},
1164 {"--print-prog-name", "-print-prog-name=", "aj"},
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 = xrealloc (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 = alloca ((argc + 3) * sizeof (char *));
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 (_(" -dumpspecs Display all of the built in spec strings\n"), stdout);
3236 fputs (_(" -dumpversion Display the version of the compiler\n"), stdout);
3237 fputs (_(" -dumpmachine Display the compiler's target processor\n"), stdout);
3238 fputs (_(" -print-search-dirs Display the directories in the compiler's search path\n"), stdout);
3239 fputs (_(" -print-libgcc-file-name Display the name of the compiler's companion library\n"), stdout);
3240 fputs (_(" -print-file-name=<lib> Display the full path to library <lib>\n"), stdout);
3241 fputs (_(" -print-prog-name=<prog> Display the full path to compiler component <prog>\n"), stdout);
3242 fputs (_(" -print-multi-directory Display the root directory for versions of libgcc\n"), stdout);
3244 -print-multi-lib Display the mapping between command line options and\n\
3245 multiple library search directories\n"), stdout);
3246 fputs (_(" -print-multi-os-directory Display the relative path to OS libraries\n"), stdout);
3247 fputs (_(" -print-sysroot-headers-suffix Display the sysroot suffix used to find headers\n"), stdout);
3248 fputs (_(" -Wa,<options> Pass comma-separated <options> on to the assembler\n"), stdout);
3249 fputs (_(" -Wp,<options> Pass comma-separated <options> on to the preprocessor\n"), stdout);
3250 fputs (_(" -Wl,<options> Pass comma-separated <options> on to the linker\n"), stdout);
3251 fputs (_(" -Xassembler <arg> Pass <arg> on to the assembler\n"), stdout);
3252 fputs (_(" -Xpreprocessor <arg> Pass <arg> on to the preprocessor\n"), stdout);
3253 fputs (_(" -Xlinker <arg> Pass <arg> on to the linker\n"), stdout);
3254 fputs (_(" -combine Pass multiple source files to compiler at once\n"), stdout);
3255 fputs (_(" -save-temps Do not delete intermediate files\n"), stdout);
3256 fputs (_(" -pipe Use pipes rather than intermediate files\n"), stdout);
3257 fputs (_(" -time Time the execution of each subprocess\n"), stdout);
3258 fputs (_(" -specs=<file> Override built-in specs with the contents of <file>\n"), stdout);
3259 fputs (_(" -std=<standard> Assume that the input sources are for <standard>\n"), stdout);
3261 --sysroot=<directory> Use <directory> as the root directory for headers\n\
3262 and libraries\n"), stdout);
3263 fputs (_(" -B <directory> Add <directory> to the compiler's search paths\n"), stdout);
3264 fputs (_(" -b <machine> Run gcc for target <machine>, if installed\n"), stdout);
3265 fputs (_(" -V <version> Run gcc version number <version>, if installed\n"), stdout);
3266 fputs (_(" -v Display the programs invoked by the compiler\n"), stdout);
3267 fputs (_(" -### Like -v but options quoted and commands not executed\n"), stdout);
3268 fputs (_(" -E Preprocess only; do not compile, assemble or link\n"), stdout);
3269 fputs (_(" -S Compile only; do not assemble or link\n"), stdout);
3270 fputs (_(" -c Compile and assemble, but do not link\n"), stdout);
3271 fputs (_(" -o <file> Place the output into <file>\n"), stdout);
3273 -x <language> Specify the language of the following input files\n\
3274 Permissible languages include: c c++ assembler none\n\
3275 'none' means revert to the default behavior of\n\
3276 guessing the language based on the file's extension\n\
3280 \nOptions starting with -g, -f, -m, -O, -W, or --param are automatically\n\
3281 passed on to the various sub-processes invoked by %s. In order to pass\n\
3282 other options on to these processes the -W<letter> options must be used.\n\
3285 /* The rest of the options are displayed by invocations of the various
3290 add_preprocessor_option (const char *option, int len)
3292 n_preprocessor_options++;
3294 if (! preprocessor_options)
3295 preprocessor_options = XNEWVEC (char *, n_preprocessor_options);
3297 preprocessor_options = XRESIZEVEC (char *, preprocessor_options,
3298 n_preprocessor_options);
3300 preprocessor_options [n_preprocessor_options - 1] =
3301 save_string (option, len);
3305 add_assembler_option (const char *option, int len)
3307 n_assembler_options++;
3309 if (! assembler_options)
3310 assembler_options = XNEWVEC (char *, n_assembler_options);
3312 assembler_options = XRESIZEVEC (char *, assembler_options,
3313 n_assembler_options);
3315 assembler_options [n_assembler_options - 1] = save_string (option, len);
3319 add_linker_option (const char *option, int len)
3323 if (! linker_options)
3324 linker_options = XNEWVEC (char *, n_linker_options);
3326 linker_options = XRESIZEVEC (char *, linker_options, n_linker_options);
3328 linker_options [n_linker_options - 1] = save_string (option, len);
3331 /* Create the vector `switches' and its contents.
3332 Store its length in `n_switches'. */
3335 process_command (int argc, const char **argv)
3340 const char *spec_lang = 0;
3341 int last_language_n_infiles;
3342 int lang_n_infiles = 0;
3343 #ifdef MODIFY_TARGET_NAME
3344 int is_modify_target_name;
3347 const char *tooldir_prefix;
3349 GET_ENVIRONMENT (gcc_exec_prefix, "GCC_EXEC_PREFIX");
3353 added_libraries = 0;
3355 /* Figure compiler version from version string. */
3357 compiler_version = temp1 = xstrdup (version_string);
3359 for (; *temp1; ++temp1)
3368 /* If there is a -V or -b option (or both), process it now, before
3369 trying to interpret the rest of the command line.
3370 Use heuristic that all configuration names must have at least
3371 one dash '-'. This allows us to pass options starting with -b. */
3372 if (argc > 1 && argv[1][0] == '-'
3373 && (argv[1][1] == 'V' ||
3374 ((argv[1][1] == 'b') && (NULL != strchr(argv[1] + 2,'-')))))
3376 const char *new_version = DEFAULT_TARGET_VERSION;
3377 const char *new_machine = DEFAULT_TARGET_MACHINE;
3378 const char *progname = argv[0];
3383 while (argc > 1 && argv[1][0] == '-'
3384 && (argv[1][1] == 'V' ||
3385 ((argv[1][1] == 'b') && ( NULL != strchr(argv[1] + 2,'-')))))
3387 char opt = argv[1][1];
3389 if (argv[1][2] != '\0')
3402 fatal ("'-%c' option must have argument", opt);
3409 for (baselen = strlen (progname); baselen > 0; baselen--)
3410 if (IS_DIR_SEPARATOR (progname[baselen-1]))
3412 new_argv0 = (char *) xmemdup (progname, baselen,
3413 baselen + concat_length (new_version, new_machine,
3414 "-gcc-", NULL) + 1);
3415 strcpy (new_argv0 + baselen, new_machine);
3416 strcat (new_argv0, "-gcc-");
3417 strcat (new_argv0, new_version);
3419 new_argv = (char **) xmemdup (argv, (argc + 1) * sizeof (argv[0]),
3420 (argc + 1) * sizeof (argv[0]));
3421 new_argv[0] = new_argv0;
3423 execvp (new_argv0, new_argv);
3424 fatal ("couldn't run '%s': %s", new_argv0, xstrerror (errno));
3427 /* Set up the default search paths. If there is no GCC_EXEC_PREFIX,
3428 see if we can create it from the pathname specified in argv[0]. */
3430 gcc_libexec_prefix = standard_libexec_prefix;
3432 /* FIXME: make_relative_prefix doesn't yet work for VMS. */
3433 if (!gcc_exec_prefix)
3435 gcc_exec_prefix = make_relative_prefix (argv[0], standard_bindir_prefix,
3436 standard_exec_prefix);
3437 gcc_libexec_prefix = make_relative_prefix (argv[0],
3438 standard_bindir_prefix,
3439 standard_libexec_prefix);
3440 if (gcc_exec_prefix)
3441 xputenv (concat ("GCC_EXEC_PREFIX=", gcc_exec_prefix, NULL));
3445 /* make_relative_prefix requires a program name, but
3446 GCC_EXEC_PREFIX is typically a directory name with a trailing
3447 / (which is ignored by make_relative_prefix), so append a
3449 char *tmp_prefix = concat (gcc_exec_prefix, "gcc", NULL);
3450 gcc_libexec_prefix = make_relative_prefix (tmp_prefix,
3451 standard_exec_prefix,
3452 standard_libexec_prefix);
3454 /* The path is unrelocated, so fallback to the original setting. */
3455 if (!gcc_libexec_prefix)
3456 gcc_libexec_prefix = standard_libexec_prefix;
3462 /* From this point onward, gcc_exec_prefix is non-null if the toolchain
3463 is relocated. The toolchain was either relocated using GCC_EXEC_PREFIX
3464 or an automatically created GCC_EXEC_PREFIX from argv[0]. */
3466 if (gcc_exec_prefix)
3468 int len = strlen (gcc_exec_prefix);
3470 if (len > (int) sizeof ("/lib/gcc/") - 1
3471 && (IS_DIR_SEPARATOR (gcc_exec_prefix[len-1])))
3473 temp = gcc_exec_prefix + len - sizeof ("/lib/gcc/") + 1;
3474 if (IS_DIR_SEPARATOR (*temp)
3475 && strncmp (temp + 1, "lib", 3) == 0
3476 && IS_DIR_SEPARATOR (temp[4])
3477 && strncmp (temp + 5, "gcc", 3) == 0)
3478 len -= sizeof ("/lib/gcc/") - 1;
3481 set_std_prefix (gcc_exec_prefix, len);
3482 add_prefix (&exec_prefixes, gcc_libexec_prefix, "GCC",
3483 PREFIX_PRIORITY_LAST, 0, 0);
3484 add_prefix (&startfile_prefixes, gcc_exec_prefix, "GCC",
3485 PREFIX_PRIORITY_LAST, 0, 0);
3488 /* COMPILER_PATH and LIBRARY_PATH have values
3489 that are lists of directory names with colons. */
3491 GET_ENVIRONMENT (temp, "COMPILER_PATH");
3494 const char *startp, *endp;
3495 char *nstore = (char *) alloca (strlen (temp) + 3);
3497 startp = endp = temp;
3500 if (*endp == PATH_SEPARATOR || *endp == 0)
3502 strncpy (nstore, startp, endp - startp);
3504 strcpy (nstore, concat (".", dir_separator_str, NULL));
3505 else if (!IS_DIR_SEPARATOR (endp[-1]))
3507 nstore[endp - startp] = DIR_SEPARATOR;
3508 nstore[endp - startp + 1] = 0;
3511 nstore[endp - startp] = 0;
3512 add_prefix (&exec_prefixes, nstore, 0,
3513 PREFIX_PRIORITY_LAST, 0, 0);
3514 add_prefix (&include_prefixes, nstore, 0,
3515 PREFIX_PRIORITY_LAST, 0, 0);
3518 endp = startp = endp + 1;
3525 GET_ENVIRONMENT (temp, LIBRARY_PATH_ENV);
3526 if (temp && *cross_compile == '0')
3528 const char *startp, *endp;
3529 char *nstore = (char *) alloca (strlen (temp) + 3);
3531 startp = endp = temp;
3534 if (*endp == PATH_SEPARATOR || *endp == 0)
3536 strncpy (nstore, startp, endp - startp);
3538 strcpy (nstore, concat (".", dir_separator_str, NULL));
3539 else if (!IS_DIR_SEPARATOR (endp[-1]))
3541 nstore[endp - startp] = DIR_SEPARATOR;
3542 nstore[endp - startp + 1] = 0;
3545 nstore[endp - startp] = 0;
3546 add_prefix (&startfile_prefixes, nstore, NULL,
3547 PREFIX_PRIORITY_LAST, 0, 1);
3550 endp = startp = endp + 1;
3557 /* Use LPATH like LIBRARY_PATH (for the CMU build program). */
3558 GET_ENVIRONMENT (temp, "LPATH");
3559 if (temp && *cross_compile == '0')
3561 const char *startp, *endp;
3562 char *nstore = (char *) alloca (strlen (temp) + 3);
3564 startp = endp = temp;
3567 if (*endp == PATH_SEPARATOR || *endp == 0)
3569 strncpy (nstore, startp, endp - startp);
3571 strcpy (nstore, concat (".", dir_separator_str, NULL));
3572 else if (!IS_DIR_SEPARATOR (endp[-1]))
3574 nstore[endp - startp] = DIR_SEPARATOR;
3575 nstore[endp - startp + 1] = 0;
3578 nstore[endp - startp] = 0;
3579 add_prefix (&startfile_prefixes, nstore, NULL,
3580 PREFIX_PRIORITY_LAST, 0, 1);
3583 endp = startp = endp + 1;
3590 /* Convert new-style -- options to old-style. */
3591 translate_options (&argc, (const char *const **) &argv);
3593 /* Do language-specific adjustment/addition of flags. */
3594 lang_specific_driver (&argc, (const char *const **) &argv, &added_libraries);
3596 /* Scan argv twice. Here, the first time, just count how many switches
3597 there will be in their vector, and how many input files in theirs.
3598 Here we also parse the switches that cc itself uses (e.g. -v). */
3600 for (i = 1; i < argc; i++)
3602 if (! strcmp (argv[i], "-dumpspecs"))
3604 struct spec_list *sl;
3606 for (sl = specs; sl; sl = sl->next)
3607 printf ("*%s:\n%s\n\n", sl->name, *(sl->ptr_spec));
3608 if (link_command_spec)
3609 printf ("*link_command:\n%s\n\n", link_command_spec);
3612 else if (! strcmp (argv[i], "-dumpversion"))
3614 printf ("%s\n", spec_version);
3617 else if (! strcmp (argv[i], "-dumpmachine"))
3619 printf ("%s\n", spec_machine);
3622 else if (strcmp (argv[i], "-fversion") == 0)
3624 /* translate_options () has turned --version into -fversion. */
3625 printf (_("%s %s%s\n"), programname, pkgversion_string,
3627 printf ("Copyright %s 2008 Free Software Foundation, Inc.\n",
3629 fputs (_("This is free software; see the source for copying conditions. There is NO\n\
3630 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\n"),
3634 else if (strcmp (argv[i], "-fhelp") == 0)
3636 /* translate_options () has turned --help into -fhelp. */
3637 print_help_list = 1;
3639 /* We will be passing a dummy file on to the sub-processes. */
3643 /* CPP driver cannot obtain switch from cc1_options. */
3645 add_preprocessor_option ("--help", 6);
3646 add_assembler_option ("--help", 6);
3647 add_linker_option ("--help", 6);
3649 else if (strncmp (argv[i], "-fhelp=", 7) == 0)
3651 /* translate_options () has turned --help into -fhelp. */
3652 print_subprocess_help = 2;
3654 /* We will be passing a dummy file on to the sub-processes. */
3658 else if (strcmp (argv[i], "-ftarget-help") == 0)
3660 /* translate_options() has turned --target-help into -ftarget-help. */
3661 print_subprocess_help = 1;
3663 /* We will be passing a dummy file on to the sub-processes. */
3667 /* CPP driver cannot obtain switch from cc1_options. */
3669 add_preprocessor_option ("--target-help", 13);
3670 add_assembler_option ("--target-help", 13);
3671 add_linker_option ("--target-help", 13);
3673 else if (! strcmp (argv[i], "-pass-exit-codes"))
3675 pass_exit_codes = 1;
3678 else if (! strcmp (argv[i], "-print-search-dirs"))
3679 print_search_dirs = 1;
3680 else if (! strcmp (argv[i], "-print-libgcc-file-name"))
3681 print_file_name = "libgcc.a";
3682 else if (! strncmp (argv[i], "-print-file-name=", 17))
3683 print_file_name = argv[i] + 17;
3684 else if (! strncmp (argv[i], "-print-prog-name=", 17))
3685 print_prog_name = argv[i] + 17;
3686 else if (! strcmp (argv[i], "-print-multi-lib"))
3687 print_multi_lib = 1;
3688 else if (! strcmp (argv[i], "-print-multi-directory"))
3689 print_multi_directory = 1;
3690 else if (! strcmp (argv[i], "-print-multi-os-directory"))
3691 print_multi_os_directory = 1;
3692 else if (! strcmp (argv[i], "-print-sysroot-headers-suffix"))
3693 print_sysroot_headers_suffix = 1;
3694 else if (! strncmp (argv[i], "-Wa,", 4))
3697 /* Pass the rest of this option to the assembler. */
3699 /* Split the argument at commas. */
3701 for (j = 4; argv[i][j]; j++)
3702 if (argv[i][j] == ',')
3704 add_assembler_option (argv[i] + prev, j - prev);
3708 /* Record the part after the last comma. */
3709 add_assembler_option (argv[i] + prev, j - prev);
3711 else if (! strncmp (argv[i], "-Wp,", 4))
3714 /* Pass the rest of this option to the preprocessor. */
3716 /* Split the argument at commas. */
3718 for (j = 4; argv[i][j]; j++)
3719 if (argv[i][j] == ',')
3721 add_preprocessor_option (argv[i] + prev, j - prev);
3725 /* Record the part after the last comma. */
3726 add_preprocessor_option (argv[i] + prev, j - prev);
3728 else if (argv[i][0] == '+' && argv[i][1] == 'e')
3729 /* The +e options to the C++ front-end. */
3731 else if (strncmp (argv[i], "-Wl,", 4) == 0)
3734 /* Split the argument at commas. */
3735 for (j = 3; argv[i][j]; j++)
3736 n_infiles += (argv[i][j] == ',');
3738 else if (strcmp (argv[i], "-Xlinker") == 0)
3741 fatal ("argument to '-Xlinker' is missing");
3746 else if (strcmp (argv[i], "-Xpreprocessor") == 0)
3749 fatal ("argument to '-Xpreprocessor' is missing");
3751 add_preprocessor_option (argv[i+1], strlen (argv[i+1]));
3753 else if (strcmp (argv[i], "-Xassembler") == 0)
3756 fatal ("argument to '-Xassembler' is missing");
3758 add_assembler_option (argv[i+1], strlen (argv[i+1]));
3760 else if (strcmp (argv[i], "-l") == 0)
3763 fatal ("argument to '-l' is missing");
3768 else if (strncmp (argv[i], "-l", 2) == 0)
3770 else if (strcmp (argv[i], "-save-temps") == 0)
3772 save_temps_flag = 1;
3775 else if (strcmp (argv[i], "-combine") == 0)
3780 else if (strcmp (argv[i], "-specs") == 0)
3782 struct user_specs *user = XNEW (struct user_specs);
3784 fatal ("argument to '-specs' is missing");
3786 user->next = (struct user_specs *) 0;
3787 user->filename = argv[i];
3788 if (user_specs_tail)
3789 user_specs_tail->next = user;
3791 user_specs_head = user;
3792 user_specs_tail = user;
3794 else if (strncmp (argv[i], "-specs=", 7) == 0)
3796 struct user_specs *user = XNEW (struct user_specs);
3797 if (strlen (argv[i]) == 7)
3798 fatal ("argument to '-specs=' is missing");
3800 user->next = (struct user_specs *) 0;
3801 user->filename = argv[i] + 7;
3802 if (user_specs_tail)
3803 user_specs_tail->next = user;
3805 user_specs_head = user;
3806 user_specs_tail = user;
3808 else if (strcmp (argv[i], "-time") == 0)
3810 else if (strcmp (argv[i], "-pipe") == 0)
3812 /* -pipe has to go into the switches array as well as
3817 else if (strcmp (argv[i], "-wrapper") == 0)
3820 fatal ("argument to '-wrapper' is missing");
3822 wrapper_string = argv[i];
3826 else if (strcmp (argv[i], "-###") == 0)
3828 /* This is similar to -v except that there is no execution
3829 of the commands and the echoed arguments are quoted. It
3830 is intended for use in shell scripts to capture the
3831 driver-generated command line. */
3832 verbose_only_flag++;
3835 else if (argv[i][0] == '-' && argv[i][1] != 0)
3837 const char *p = &argv[i][1];
3843 if (NULL == strchr(argv[i] + 2, '-'))
3848 fatal ("'-%c' must come at the start of the command line", c);
3856 if (p[1] == 0 && i + 1 == argc)
3857 fatal ("argument to '-B' is missing");
3863 len = strlen (value);
3865 /* Catch the case where the user has forgotten to append a
3866 directory separator to the path. Note, they may be using
3867 -B to add an executable name prefix, eg "i386-elf-", in
3868 order to distinguish between multiple installations of
3869 GCC in the same directory. Hence we must check to see
3870 if appending a directory separator actually makes a
3871 valid directory name. */
3872 if (! IS_DIR_SEPARATOR (value [len - 1])
3873 && is_directory (value, false))
3875 char *tmp = XNEWVEC (char, len + 2);
3876 strcpy (tmp, value);
3877 tmp[len] = DIR_SEPARATOR;
3882 add_prefix (&exec_prefixes, value, NULL,
3883 PREFIX_PRIORITY_B_OPT, 0, 0);
3884 add_prefix (&startfile_prefixes, value, NULL,
3885 PREFIX_PRIORITY_B_OPT, 0, 0);
3886 add_prefix (&include_prefixes, value, NULL,
3887 PREFIX_PRIORITY_B_OPT, 0, 0);
3892 case 'v': /* Print our subcommands and print versions. */
3894 /* If they do anything other than exactly `-v', don't set
3895 verbose_flag; rather, continue on to give the error. */
3913 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3918 /* Forward scan, just in case -S or -c is specified
3925 if (argv[j][0] == '-')
3927 if (SWITCH_CURTAILS_COMPILATION (argv[j][1])
3933 else if ((skip = SWITCH_TAKES_ARG (argv[j][1])))
3934 j += skip - (argv[j][2] != 0);
3935 else if ((skip = WORD_SWITCH_TAKES_ARG (argv[j] + 1)))
3942 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX) || defined(HAVE_TARGET_OBJECT_SUFFIX)
3944 argv[i + 1] = convert_filename (argv[i + 1], ! have_c, 0);
3946 argv[i] = convert_filename (argv[i], ! have_c, 0);
3953 #ifdef MODIFY_TARGET_NAME
3954 is_modify_target_name = 0;
3956 for (j = 0; j < ARRAY_SIZE (modify_target); j++)
3957 if (! strcmp (argv[i], modify_target[j].sw))
3959 char *new_name = xmalloc (strlen (modify_target[j].str)
3960 + strlen (spec_machine));
3963 int made_addition = 0;
3965 is_modify_target_name = 1;
3966 for (p = spec_machine, q = new_name; *p != 0; )
3968 if (modify_target[j].add_del == DELETE
3969 && (! strncmp (q, modify_target[j].str,
3970 strlen (modify_target[j].str))))
3971 p += strlen (modify_target[j].str);
3972 else if (modify_target[j].add_del == ADD
3973 && ! made_addition && *p == '-')
3975 for (r = modify_target[j].str; *r != 0; )
3983 spec_machine = new_name;
3986 if (is_modify_target_name)
3992 if (SWITCH_TAKES_ARG (c) > (p[1] != 0))
3993 i += SWITCH_TAKES_ARG (c) - (p[1] != 0);
3994 else if (WORD_SWITCH_TAKES_ARG (p))
3995 i += WORD_SWITCH_TAKES_ARG (p);
4005 if (save_temps_flag && use_pipes)
4007 /* -save-temps overrides -pipe, so that temp files are produced */
4008 if (save_temps_flag)
4009 error ("warning: -pipe ignored because -save-temps specified");
4013 /* Set up the search paths. We add directories that we expect to
4014 contain GNU Toolchain components before directories specified by
4015 the machine description so that we will find GNU components (like
4016 the GNU assembler) before those of the host system. */
4018 /* If we don't know where the toolchain has been installed, use the
4019 configured-in locations. */
4020 if (!gcc_exec_prefix)
4023 add_prefix (&exec_prefixes, standard_libexec_prefix, "GCC",
4024 PREFIX_PRIORITY_LAST, 1, 0);
4025 add_prefix (&exec_prefixes, standard_libexec_prefix, "BINUTILS",
4026 PREFIX_PRIORITY_LAST, 2, 0);
4027 add_prefix (&exec_prefixes, standard_exec_prefix, "BINUTILS",
4028 PREFIX_PRIORITY_LAST, 2, 0);
4030 add_prefix (&startfile_prefixes, standard_exec_prefix, "BINUTILS",
4031 PREFIX_PRIORITY_LAST, 1, 0);
4034 /* If not cross-compiling, search well-known system locations. */
4035 if (*cross_compile == '0')
4038 add_prefix (&exec_prefixes, standard_exec_prefix_1, "BINUTILS",
4039 PREFIX_PRIORITY_LAST, 2, 0);
4040 add_prefix (&exec_prefixes, standard_exec_prefix_2, "BINUTILS",
4041 PREFIX_PRIORITY_LAST, 2, 0);
4043 add_prefix (&startfile_prefixes, standard_exec_prefix_2, "BINUTILS",
4044 PREFIX_PRIORITY_LAST, 1, 0);
4047 gcc_assert (!IS_ABSOLUTE_PATH (tooldir_base_prefix));
4048 tooldir_prefix = concat (tooldir_base_prefix, spec_machine,
4049 dir_separator_str, NULL);
4051 /* Look for tools relative to the location from which the driver is
4052 running, or, if that is not available, the configured prefix. */
4054 = concat (gcc_exec_prefix ? gcc_exec_prefix : standard_exec_prefix,
4055 spec_machine, dir_separator_str,
4056 spec_version, dir_separator_str, tooldir_prefix, NULL);
4058 add_prefix (&exec_prefixes,
4059 concat (tooldir_prefix, "bin", dir_separator_str, NULL),
4060 "BINUTILS", PREFIX_PRIORITY_LAST, 0, 0);
4061 add_prefix (&startfile_prefixes,
4062 concat (tooldir_prefix, "lib", dir_separator_str, NULL),
4063 "BINUTILS", PREFIX_PRIORITY_LAST, 0, 1);
4065 #if defined(TARGET_SYSTEM_ROOT_RELOCATABLE) && !defined(VMS)
4066 /* If the normal TARGET_SYSTEM_ROOT is inside of $exec_prefix,
4067 then consider it to relocate with the rest of the GCC installation
4068 if GCC_EXEC_PREFIX is set.
4069 ``make_relative_prefix'' is not compiled for VMS, so don't call it. */
4070 if (target_system_root && gcc_exec_prefix)
4072 char *tmp_prefix = make_relative_prefix (argv[0],
4073 standard_bindir_prefix,
4074 target_system_root);
4075 if (tmp_prefix && access_check (tmp_prefix, F_OK) == 0)
4077 target_system_root = tmp_prefix;
4078 target_system_root_changed = 1;
4083 /* More prefixes are enabled in main, after we read the specs file
4084 and determine whether this is cross-compilation or not. */
4086 /* Then create the space for the vectors and scan again. */
4088 switches = XNEWVEC (struct switchstr, n_switches + 1);
4089 infiles = XNEWVEC (struct infile, n_infiles + 1);
4092 last_language_n_infiles = -1;
4094 /* This, time, copy the text of each switch and store a pointer
4095 to the copy in the vector of switches.
4096 Store all the infiles in their vector. */
4098 for (i = 1; i < argc; i++)
4100 /* Just skip the switches that were handled by the preceding loop. */
4101 #ifdef MODIFY_TARGET_NAME
4102 is_modify_target_name = 0;
4104 for (j = 0; j < ARRAY_SIZE (modify_target); j++)
4105 if (! strcmp (argv[i], modify_target[j].sw))
4106 is_modify_target_name = 1;
4108 if (is_modify_target_name)
4112 if (! strncmp (argv[i], "-Wa,", 4))
4114 else if (! strncmp (argv[i], "-Wp,", 4))
4116 else if (! strcmp (argv[i], "-pass-exit-codes"))
4118 else if (! strcmp (argv[i], "-print-search-dirs"))
4120 else if (! strcmp (argv[i], "-print-libgcc-file-name"))
4122 else if (! strncmp (argv[i], "-print-file-name=", 17))
4124 else if (! strncmp (argv[i], "-print-prog-name=", 17))
4126 else if (! strcmp (argv[i], "-print-multi-lib"))
4128 else if (! strcmp (argv[i], "-print-multi-directory"))
4130 else if (! strcmp (argv[i], "-print-multi-os-directory"))
4132 else if (! strcmp (argv[i], "-print-sysroot-headers-suffix"))
4134 else if (! strncmp (argv[i], "--sysroot=", strlen ("--sysroot=")))
4136 target_system_root = argv[i] + strlen ("--sysroot=");
4137 target_system_root_changed = 1;
4139 else if (argv[i][0] == '+' && argv[i][1] == 'e')
4141 /* Compensate for the +e options to the C++ front-end;
4142 they're there simply for cfront call-compatibility. We do
4143 some magic in default_compilers to pass them down properly.
4144 Note we deliberately start at the `+' here, to avoid passing
4145 -e0 or -e1 down into the linker. */
4146 switches[n_switches].part1 = &argv[i][0];
4147 switches[n_switches].args = 0;
4148 switches[n_switches].live_cond = 0;
4149 switches[n_switches].validated = 0;
4152 else if (strncmp (argv[i], "-Wl,", 4) == 0)
4155 /* Split the argument at commas. */
4157 for (j = 4; argv[i][j]; j++)
4158 if (argv[i][j] == ',')
4160 infiles[n_infiles].language = "*";
4161 infiles[n_infiles++].name
4162 = save_string (argv[i] + prev, j - prev);
4165 /* Record the part after the last comma. */
4166 infiles[n_infiles].language = "*";
4167 infiles[n_infiles++].name = argv[i] + prev;
4169 else if (strcmp (argv[i], "-Xlinker") == 0)
4171 infiles[n_infiles].language = "*";
4172 infiles[n_infiles++].name = argv[++i];
4174 /* Xassembler and Xpreprocessor were already handled in the first argv
4175 scan, so all we need to do here is ignore them and their argument. */
4176 else if (strcmp (argv[i], "-Xassembler") == 0)
4178 else if (strcmp (argv[i], "-Xpreprocessor") == 0)
4180 else if (strcmp (argv[i], "-l") == 0)
4181 { /* POSIX allows separation of -l and the lib arg;
4182 canonicalize by concatenating -l with its arg */
4183 infiles[n_infiles].language = "*";
4184 infiles[n_infiles++].name = concat ("-l", argv[++i], NULL);
4186 else if (strncmp (argv[i], "-l", 2) == 0)
4188 infiles[n_infiles].language = "*";
4189 infiles[n_infiles++].name = argv[i];
4191 else if (strcmp (argv[i], "-wrapper") == 0)
4193 else if (strcmp (argv[i], "-specs") == 0)
4195 else if (strncmp (argv[i], "-specs=", 7) == 0)
4197 else if (strcmp (argv[i], "-time") == 0)
4199 else if (strcmp (argv[i], "-###") == 0)
4201 else if (argv[i][0] == '-' && argv[i][1] != 0)
4203 const char *p = &argv[i][1];
4208 if (p[1] == 0 && i + 1 == argc)
4209 fatal ("argument to '-x' is missing");
4211 spec_lang = argv[++i];
4214 if (! strcmp (spec_lang, "none"))
4215 /* Suppress the warning if -xnone comes after the last input
4216 file, because alternate command interfaces like g++ might
4217 find it useful to place -xnone after each input file. */
4220 last_language_n_infiles = n_infiles;
4223 switches[n_switches].part1 = p;
4224 /* Deal with option arguments in separate argv elements. */
4225 if ((SWITCH_TAKES_ARG (c) > (p[1] != 0))
4226 || WORD_SWITCH_TAKES_ARG (p))
4229 int n_args = WORD_SWITCH_TAKES_ARG (p);
4233 /* Count only the option arguments in separate argv elements. */
4234 n_args = SWITCH_TAKES_ARG (c) - (p[1] != 0);
4236 if (i + n_args >= argc)
4237 fatal ("argument to '-%s' is missing", p);
4238 switches[n_switches].args
4239 = XNEWVEC (const char *, n_args + 1);
4241 switches[n_switches].args[j++] = argv[++i];
4242 /* Null-terminate the vector. */
4243 switches[n_switches].args[j] = 0;
4245 else if (strchr (switches_need_spaces, c))
4247 /* On some systems, ld cannot handle some options without
4248 a space. So split the option from its argument. */
4249 char *part1 = XNEWVEC (char, 2);
4253 switches[n_switches].part1 = part1;
4254 switches[n_switches].args = XNEWVEC (const char *, 2);
4255 switches[n_switches].args[0] = xstrdup (p+1);
4256 switches[n_switches].args[1] = 0;
4259 switches[n_switches].args = 0;
4261 switches[n_switches].live_cond = 0;
4262 switches[n_switches].validated = 0;
4263 switches[n_switches].ordering = 0;
4264 /* These are always valid, since gcc.c itself understands the
4265 first four and gfortranspec.c understands -static-libgfortran. */
4266 if (!strcmp (p, "save-temps")
4267 || !strcmp (p, "static-libgcc")
4268 || !strcmp (p, "shared-libgcc")
4269 || !strcmp (p, "pipe")
4270 || !strcmp (p, "static-libgfortran"))
4271 switches[n_switches].validated = 1;
4274 char ch = switches[n_switches].part1[0];
4276 switches[n_switches].validated = 1;
4282 #ifdef HAVE_TARGET_OBJECT_SUFFIX
4283 argv[i] = convert_filename (argv[i], 0, access (argv[i], F_OK));
4286 if (strcmp (argv[i], "-") != 0 && access (argv[i], F_OK) < 0)
4288 perror_with_name (argv[i]);
4293 infiles[n_infiles].language = spec_lang;
4294 infiles[n_infiles++].name = argv[i];
4299 if (n_infiles == last_language_n_infiles && spec_lang != 0)
4300 error ("warning: '-x %s' after last input file has no effect", spec_lang);
4302 /* Ensure we only invoke each subprocess once. */
4303 if (print_subprocess_help || print_help_list)
4307 /* Create a dummy input file, so that we can pass
4308 the help option on to the various sub-processes. */
4309 infiles[0].language = "c";
4310 infiles[0].name = "help-dummy";
4313 switches[n_switches].part1 = 0;
4314 infiles[n_infiles].name = 0;
4317 /* Store switches not filtered out by %<S in spec in COLLECT_GCC_OPTIONS
4318 and place that in the environment. */
4321 set_collect_gcc_options (void)
4326 /* Build COLLECT_GCC_OPTIONS to have all of the options specified to
4328 obstack_grow (&collect_obstack, "COLLECT_GCC_OPTIONS=",
4329 sizeof ("COLLECT_GCC_OPTIONS=") - 1);
4332 for (i = 0; (int) i < n_switches; i++)
4334 const char *const *args;
4337 obstack_grow (&collect_obstack, " ", 1);
4341 /* Ignore elided switches. */
4342 if ((switches[i].live_cond & SWITCH_IGNORE) != 0)
4345 obstack_grow (&collect_obstack, "'-", 2);
4346 q = switches[i].part1;
4347 while ((p = strchr (q, '\'')))
4349 obstack_grow (&collect_obstack, q, p - q);
4350 obstack_grow (&collect_obstack, "'\\''", 4);
4353 obstack_grow (&collect_obstack, q, strlen (q));
4354 obstack_grow (&collect_obstack, "'", 1);
4356 for (args = switches[i].args; args && *args; args++)
4358 obstack_grow (&collect_obstack, " '", 2);
4360 while ((p = strchr (q, '\'')))
4362 obstack_grow (&collect_obstack, q, p - q);
4363 obstack_grow (&collect_obstack, "'\\''", 4);
4366 obstack_grow (&collect_obstack, q, strlen (q));
4367 obstack_grow (&collect_obstack, "'", 1);
4370 obstack_grow (&collect_obstack, "\0", 1);
4371 xputenv (XOBFINISH (&collect_obstack, char *));
4374 /* Process a spec string, accumulating and running commands. */
4376 /* These variables describe the input file name.
4377 input_file_number is the index on outfiles of this file,
4378 so that the output file name can be stored for later use by %o.
4379 input_basename is the start of the part of the input file
4380 sans all directory names, and basename_length is the number
4381 of characters starting there excluding the suffix .c or whatever. */
4383 static const char *input_filename;
4384 static int input_file_number;
4385 size_t input_filename_length;
4386 static int basename_length;
4387 static int suffixed_basename_length;
4388 static const char *input_basename;
4389 static const char *input_suffix;
4390 #ifndef HOST_LACKS_INODE_NUMBERS
4391 static struct stat input_stat;
4393 static int input_stat_set;
4395 /* The compiler used to process the current input file. */
4396 static struct compiler *input_file_compiler;
4398 /* These are variables used within do_spec and do_spec_1. */
4400 /* Nonzero if an arg has been started and not yet terminated
4401 (with space, tab or newline). */
4402 static int arg_going;
4404 /* Nonzero means %d or %g has been seen; the next arg to be terminated
4405 is a temporary file name. */
4406 static int delete_this_arg;
4408 /* Nonzero means %w has been seen; the next arg to be terminated
4409 is the output file name of this compilation. */
4410 static int this_is_output_file;
4412 /* Nonzero means %s has been seen; the next arg to be terminated
4413 is the name of a library file and we should try the standard
4414 search dirs for it. */
4415 static int this_is_library_file;
4417 /* Nonzero means that the input of this command is coming from a pipe. */
4418 static int input_from_pipe;
4420 /* Nonnull means substitute this for any suffix when outputting a switches
4422 static const char *suffix_subst;
4424 /* If there is an argument being accumulated, terminate it and store it. */
4427 end_going_arg (void)
4433 obstack_1grow (&obstack, 0);
4434 string = XOBFINISH (&obstack, const char *);
4435 if (this_is_library_file)
4436 string = find_file (string);
4437 store_arg (string, delete_this_arg, this_is_output_file);
4438 if (this_is_output_file)
4439 outfiles[input_file_number] = string;
4445 /* Parse the WRAPPER string which is a comma separated list of the command line
4446 and insert them into the beginning of argbuf. */
4449 insert_wrapper (const char *wrapper)
4453 char *buf = xstrdup (wrapper);
4462 while ((p = strchr (p, ',')) != NULL);
4464 if (argbuf_index + n >= argbuf_length)
4466 argbuf_length = argbuf_length * 2;
4467 while (argbuf_length < argbuf_index + n)
4469 argbuf = XRESIZEVEC (const char *, argbuf, argbuf_length);
4471 for (i = argbuf_index - 1; i >= 0; i--)
4472 argbuf[i + n] = argbuf[i];
4485 while ((p = strchr (p, ',')) != NULL);
4486 gcc_assert (i == n);
4490 /* Process the spec SPEC and run the commands specified therein.
4491 Returns 0 if the spec is successfully processed; -1 if failed. */
4494 do_spec (const char *spec)
4498 value = do_spec_2 (spec);
4500 /* Force out any unfinished command.
4501 If -pipe, this forces out the last command if it ended in `|'. */
4504 if (argbuf_index > 0 && !strcmp (argbuf[argbuf_index - 1], "|"))
4507 set_collect_gcc_options ();
4509 if (argbuf_index > 0)
4517 do_spec_2 (const char *spec)
4523 delete_this_arg = 0;
4524 this_is_output_file = 0;
4525 this_is_library_file = 0;
4526 input_from_pipe = 0;
4527 suffix_subst = NULL;
4529 result = do_spec_1 (spec, 0, NULL);
4537 /* Process the given spec string and add any new options to the end
4538 of the switches/n_switches array. */
4541 do_option_spec (const char *name, const char *spec)
4543 unsigned int i, value_count, value_len;
4544 const char *p, *q, *value;
4545 char *tmp_spec, *tmp_spec_p;
4547 if (configure_default_options[0].name == NULL)
4550 for (i = 0; i < ARRAY_SIZE (configure_default_options); i++)
4551 if (strcmp (configure_default_options[i].name, name) == 0)
4553 if (i == ARRAY_SIZE (configure_default_options))
4556 value = configure_default_options[i].value;
4557 value_len = strlen (value);
4559 /* Compute the size of the final spec. */
4562 while ((p = strstr (p, "%(VALUE)")) != NULL)
4568 /* Replace each %(VALUE) by the specified value. */
4569 tmp_spec = (char *) alloca (strlen (spec) + 1
4570 + value_count * (value_len - strlen ("%(VALUE)")));
4571 tmp_spec_p = tmp_spec;
4573 while ((p = strstr (q, "%(VALUE)")) != NULL)
4575 memcpy (tmp_spec_p, q, p - q);
4576 tmp_spec_p = tmp_spec_p + (p - q);
4577 memcpy (tmp_spec_p, value, value_len);
4578 tmp_spec_p += value_len;
4579 q = p + strlen ("%(VALUE)");
4581 strcpy (tmp_spec_p, q);
4583 do_self_spec (tmp_spec);
4586 /* Process the given spec string and add any new options to the end
4587 of the switches/n_switches array. */
4590 do_self_spec (const char *spec)
4593 do_spec_1 (" ", 0, NULL);
4595 if (argbuf_index > 0)
4600 n_switches += argbuf_index;
4601 switches = XRESIZEVEC (struct switchstr, switches, n_switches + 1);
4603 switches[n_switches] = switches[first];
4604 for (i = 0; i < argbuf_index; i++)
4606 struct switchstr *sw;
4608 /* Each switch should start with '-'. */
4609 if (argbuf[i][0] != '-')
4610 fatal ("switch '%s' does not start with '-'", argbuf[i]);
4612 sw = &switches[i + first];
4613 sw->part1 = &argbuf[i][1];
4622 /* Callback for processing %D and %I specs. */
4624 struct spec_path_info {
4629 bool separate_options;
4633 spec_path (char *path, void *data)
4635 struct spec_path_info *info = (struct spec_path_info *) data;
4639 if (info->omit_relative && !IS_ABSOLUTE_PATH (path))
4642 if (info->append_len != 0)
4644 len = strlen (path);
4645 memcpy (path + len, info->append, info->append_len + 1);
4648 if (!is_directory (path, true))
4651 do_spec_1 (info->option, 1, NULL);
4652 if (info->separate_options)
4653 do_spec_1 (" ", 0, NULL);
4655 if (info->append_len == 0)
4657 len = strlen (path);
4658 save = path[len - 1];
4659 if (IS_DIR_SEPARATOR (path[len - 1]))
4660 path[len - 1] = '\0';
4663 do_spec_1 (path, 1, NULL);
4664 do_spec_1 (" ", 0, NULL);
4666 /* Must not damage the original path. */
4667 if (info->append_len == 0)
4668 path[len - 1] = save;
4673 /* Process the sub-spec SPEC as a portion of a larger spec.
4674 This is like processing a whole spec except that we do
4675 not initialize at the beginning and we do not supply a
4676 newline by default at the end.
4677 INSWITCH nonzero means don't process %-sequences in SPEC;
4678 in this case, % is treated as an ordinary character.
4679 This is used while substituting switches.
4680 INSWITCH nonzero also causes SPC not to terminate an argument.
4682 Value is zero unless a line was finished
4683 and the command on that line reported an error. */
4686 do_spec_1 (const char *spec, int inswitch, const char *soft_matched_part)
4688 const char *p = spec;
4694 /* If substituting a switch, treat all chars like letters.
4695 Otherwise, NL, SPC, TAB and % are special. */
4696 switch (inswitch ? 'a' : c)
4701 if (argbuf_index > 0 && !strcmp (argbuf[argbuf_index - 1], "|"))
4703 /* A `|' before the newline means use a pipe here,
4704 but only if -pipe was specified.
4705 Otherwise, execute now and don't pass the `|' as an arg. */
4708 input_from_pipe = 1;
4715 set_collect_gcc_options ();
4717 if (argbuf_index > 0)
4723 /* Reinitialize for a new command, and for a new argument. */
4726 delete_this_arg = 0;
4727 this_is_output_file = 0;
4728 this_is_library_file = 0;
4729 input_from_pipe = 0;
4736 obstack_1grow (&obstack, c);
4744 /* Reinitialize for a new argument. */
4745 delete_this_arg = 0;
4746 this_is_output_file = 0;
4747 this_is_library_file = 0;
4754 fatal ("spec '%s' invalid", spec);
4757 obstack_grow (&obstack, input_basename, basename_length);
4762 obstack_grow (&obstack, input_basename, suffixed_basename_length);
4767 delete_this_arg = 2;
4770 /* Dump out the directories specified with LIBRARY_PATH,
4771 followed by the absolute directories
4772 that we search for startfiles. */
4775 struct spec_path_info info;
4778 info.append_len = 0;
4779 #ifdef RELATIVE_PREFIX_NOT_LINKDIR
4780 /* Used on systems which record the specified -L dirs
4781 and use them to search for dynamic linking.
4782 Relative directories always come from -B,
4783 and it is better not to use them for searching
4784 at run time. In particular, stage1 loses. */
4785 info.omit_relative = true;
4787 info.omit_relative = false;
4789 info.separate_options = false;
4791 for_each_path (&startfile_prefixes, true, 0, spec_path, &info);
4796 /* %efoo means report an error with `foo' as error message
4797 and don't execute any more commands for this file. */
4801 while (*p != 0 && *p != '\n')
4803 buf = (char *) alloca (p - q + 1);
4804 strncpy (buf, q, p - q);
4811 /* %nfoo means report a notice with `foo' on stderr. */
4815 while (*p != 0 && *p != '\n')
4817 buf = (char *) alloca (p - q + 1);
4818 strncpy (buf, q, p - q);
4820 notice ("%s\n", buf);
4830 /* If save_temps_flag is off, and the HOST_BIT_BUCKET is
4831 defined, and it is not a directory, and it is
4832 writable, use it. Otherwise, treat this like any
4833 other temporary file. */
4835 if ((!save_temps_flag)
4836 && (stat (HOST_BIT_BUCKET, &st) == 0) && (!S_ISDIR (st.st_mode))
4837 && (access (HOST_BIT_BUCKET, W_OK) == 0))
4839 obstack_grow (&obstack, HOST_BIT_BUCKET,
4840 strlen (HOST_BIT_BUCKET));
4841 delete_this_arg = 0;
4846 goto create_temp_file;
4850 obstack_1grow (&obstack, '-');
4851 delete_this_arg = 0;
4854 /* consume suffix */
4855 while (*p == '.' || ISALNUM ((unsigned char) *p))
4857 if (p[0] == '%' && p[1] == 'O')
4862 goto create_temp_file;
4866 /* consume suffix */
4867 while (*p == '.' || ISALNUM ((unsigned char) *p))
4869 if (p[0] == '%' && p[1] == 'O')
4874 goto create_temp_file;
4880 struct temp_name *t;
4882 const char *suffix = p;
4883 char *saved_suffix = NULL;
4885 while (*p == '.' || ISALNUM ((unsigned char) *p))
4887 suffix_length = p - suffix;
4888 if (p[0] == '%' && p[1] == 'O')
4891 /* We don't support extra suffix characters after %O. */
4892 if (*p == '.' || ISALNUM ((unsigned char) *p))
4893 fatal ("spec '%s' has invalid '%%0%c'", spec, *p);
4894 if (suffix_length == 0)
4895 suffix = TARGET_OBJECT_SUFFIX;
4899 = XNEWVEC (char, suffix_length
4900 + strlen (TARGET_OBJECT_SUFFIX));
4901 strncpy (saved_suffix, suffix, suffix_length);
4902 strcpy (saved_suffix + suffix_length,
4903 TARGET_OBJECT_SUFFIX);
4905 suffix_length += strlen (TARGET_OBJECT_SUFFIX);
4908 /* If the input_filename has the same suffix specified
4909 for the %g, %u, or %U, and -save-temps is specified,
4910 we could end up using that file as an intermediate
4911 thus clobbering the user's source file (.e.g.,
4912 gcc -save-temps foo.s would clobber foo.s with the
4913 output of cpp0). So check for this condition and
4914 generate a temp file as the intermediate. */
4916 if (save_temps_flag)
4920 temp_filename_length = basename_length + suffix_length;
4921 tmp = (char *) alloca (temp_filename_length + 1);
4922 strncpy (tmp, input_basename, basename_length);
4923 strncpy (tmp + basename_length, suffix, suffix_length);
4924 tmp[temp_filename_length] = '\0';
4925 temp_filename = tmp;
4926 if (strcmp (temp_filename, input_filename) != 0)
4928 #ifndef HOST_LACKS_INODE_NUMBERS
4929 struct stat st_temp;
4931 /* Note, set_input() resets input_stat_set to 0. */
4932 if (input_stat_set == 0)
4934 input_stat_set = stat (input_filename, &input_stat);
4935 if (input_stat_set >= 0)
4939 /* If we have the stat for the input_filename
4940 and we can do the stat for the temp_filename
4941 then the they could still refer to the same
4942 file if st_dev/st_ino's are the same. */
4943 if (input_stat_set != 1
4944 || stat (temp_filename, &st_temp) < 0
4945 || input_stat.st_dev != st_temp.st_dev
4946 || input_stat.st_ino != st_temp.st_ino)
4948 /* Just compare canonical pathnames. */
4949 char* input_realname = lrealpath (input_filename);
4950 char* temp_realname = lrealpath (temp_filename);
4951 bool files_differ = strcmp (input_realname, temp_realname);
4952 free (input_realname);
4953 free (temp_realname);
4957 temp_filename = save_string (temp_filename,
4958 temp_filename_length + 1);
4959 obstack_grow (&obstack, temp_filename,
4960 temp_filename_length);
4962 delete_this_arg = 0;
4968 /* See if we already have an association of %g/%u/%U and
4970 for (t = temp_names; t; t = t->next)
4971 if (t->length == suffix_length
4972 && strncmp (t->suffix, suffix, suffix_length) == 0
4973 && t->unique == (c == 'u' || c == 'U' || c == 'j'))
4976 /* Make a new association if needed. %u and %j
4978 if (t == 0 || c == 'u' || c == 'j')
4982 t = XNEW (struct temp_name);
4983 t->next = temp_names;
4986 t->length = suffix_length;
4989 t->suffix = saved_suffix;
4990 saved_suffix = NULL;
4993 t->suffix = save_string (suffix, suffix_length);
4994 t->unique = (c == 'u' || c == 'U' || c == 'j');
4995 temp_filename = make_temp_file (t->suffix);
4996 temp_filename_length = strlen (temp_filename);
4997 t->filename = temp_filename;
4998 t->filename_length = temp_filename_length;
5002 free (saved_suffix);
5004 obstack_grow (&obstack, t->filename, t->filename_length);
5005 delete_this_arg = 1;
5013 for (i = 0; (int) i < n_infiles; i++)
5014 if ((!infiles[i].language) || (infiles[i].language[0] != '*'))
5015 if (infiles[i].incompiler == input_file_compiler)
5017 store_arg (infiles[i].name, 0, 0);
5018 infiles[i].compiled = true;
5023 obstack_grow (&obstack, input_filename, input_filename_length);
5030 struct spec_path_info info;
5034 do_spec_1 ("-imultilib", 1, NULL);
5035 /* Make this a separate argument. */
5036 do_spec_1 (" ", 0, NULL);
5037 do_spec_1 (multilib_dir, 1, NULL);
5038 do_spec_1 (" ", 0, NULL);
5041 if (gcc_exec_prefix)
5043 do_spec_1 ("-iprefix", 1, NULL);
5044 /* Make this a separate argument. */
5045 do_spec_1 (" ", 0, NULL);
5046 do_spec_1 (gcc_exec_prefix, 1, NULL);
5047 do_spec_1 (" ", 0, NULL);
5050 if (target_system_root_changed ||
5051 (target_system_root && target_sysroot_hdrs_suffix))
5053 do_spec_1 ("-isysroot", 1, NULL);
5054 /* Make this a separate argument. */
5055 do_spec_1 (" ", 0, NULL);
5056 do_spec_1 (target_system_root, 1, NULL);
5057 if (target_sysroot_hdrs_suffix)
5058 do_spec_1 (target_sysroot_hdrs_suffix, 1, NULL);
5059 do_spec_1 (" ", 0, NULL);
5062 info.option = "-isystem";
5063 info.append = "include";
5064 info.append_len = strlen (info.append);
5065 info.omit_relative = false;
5066 info.separate_options = true;
5068 for_each_path (&include_prefixes, false, info.append_len,
5071 info.append = "include-fixed";
5072 if (*sysroot_hdrs_suffix_spec)
5073 info.append = concat (info.append, dir_separator_str,
5074 multilib_dir, NULL);
5075 info.append_len = strlen (info.append);
5076 for_each_path (&include_prefixes, false, info.append_len,
5083 int max = n_infiles;
5084 max += lang_specific_extra_outfiles;
5086 if (HAVE_GNU_LD && at_file_supplied)
5088 /* We are going to expand `%o' to `@FILE', where FILE
5089 is a newly-created temporary filename. The filenames
5090 that would usually be expanded in place of %o will be
5091 written to the temporary file. */
5093 char *temp_file = make_temp_file ("");
5096 int n_files, j, status;
5099 at_argument = concat ("@", temp_file, NULL);
5100 store_arg (at_argument, 0, 0);
5102 /* Convert OUTFILES into a form suitable for writeargv. */
5104 /* Determine how many are non-NULL. */
5105 for (n_files = 0, i = 0; i < max; i++)
5106 n_files += outfiles[i] != NULL;
5108 argv = (char **) alloca (sizeof (char *) * (n_files + 1));
5110 /* Copy the strings over. */
5111 for (i = 0, j = 0; i < max; i++)
5114 argv[j] = CONST_CAST (char *, outfiles[i]);
5119 f = fopen (temp_file, "w");
5122 fatal ("could not open temporary response file %s",
5125 status = writeargv (argv, f);
5128 fatal ("could not write to temporary response file %s",
5131 status = fclose (f);
5134 fatal ("could not close temporary response file %s",
5137 record_temp_file (temp_file, !save_temps_flag, !save_temps_flag);
5140 for (i = 0; i < max; i++)
5142 store_arg (outfiles[i], 0, 0);
5147 obstack_grow (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX));
5152 this_is_library_file = 1;
5156 outfiles[input_file_number] = NULL;
5160 this_is_output_file = 1;
5165 int cur_index = argbuf_index;
5166 /* Handle the {...} following the %W. */
5168 fatal ("spec '%s' has invalid '%%W%c", spec, *p);
5169 p = handle_braces (p + 1);
5173 /* If any args were output, mark the last one for deletion
5175 if (argbuf_index != cur_index)
5176 record_temp_file (argbuf[argbuf_index - 1], 0, 1);
5180 /* %x{OPTION} records OPTION for %X to output. */
5186 /* Skip past the option value and make a copy. */
5188 fatal ("spec '%s' has invalid '%%x%c'", spec, *p);
5191 string = save_string (p1 + 1, p - p1 - 2);
5193 /* See if we already recorded this option. */
5194 for (i = 0; i < n_linker_options; i++)
5195 if (! strcmp (string, linker_options[i]))
5201 /* This option is new; add it. */
5202 add_linker_option (string, strlen (string));
5206 /* Dump out the options accumulated previously using %x. */
5208 for (i = 0; i < n_linker_options; i++)
5210 do_spec_1 (linker_options[i], 1, NULL);
5211 /* Make each accumulated option a separate argument. */
5212 do_spec_1 (" ", 0, NULL);
5216 /* Dump out the options accumulated previously using -Wa,. */
5218 for (i = 0; i < n_assembler_options; i++)
5220 do_spec_1 (assembler_options[i], 1, NULL);
5221 /* Make each accumulated option a separate argument. */
5222 do_spec_1 (" ", 0, NULL);
5226 /* Dump out the options accumulated previously using -Wp,. */
5228 for (i = 0; i < n_preprocessor_options; i++)
5230 do_spec_1 (preprocessor_options[i], 1, NULL);
5231 /* Make each accumulated option a separate argument. */
5232 do_spec_1 (" ", 0, NULL);
5236 /* Here are digits and numbers that just process
5237 a certain constant string as a spec. */
5240 value = do_spec_1 (cc1_spec, 0, NULL);
5246 value = do_spec_1 (cc1plus_spec, 0, NULL);
5252 value = do_spec_1 (asm_spec, 0, NULL);
5258 value = do_spec_1 (asm_final_spec, 0, NULL);
5265 const char *const spec
5266 = (input_file_compiler->cpp_spec
5267 ? input_file_compiler->cpp_spec
5269 value = do_spec_1 (spec, 0, NULL);
5276 value = do_spec_1 (endfile_spec, 0, NULL);
5282 value = do_spec_1 (link_spec, 0, NULL);
5288 value = do_spec_1 (lib_spec, 0, NULL);
5294 value = do_spec_1 (libgcc_spec, 0, NULL);
5300 /* We assume there is a directory
5301 separator at the end of this string. */
5302 if (target_system_root)
5304 obstack_grow (&obstack, target_system_root,
5305 strlen (target_system_root));
5306 if (target_sysroot_suffix)
5307 obstack_grow (&obstack, target_sysroot_suffix,
5308 strlen (target_sysroot_suffix));
5313 value = do_spec_1 (startfile_spec, 0, NULL);
5318 /* Here we define characters other than letters and digits. */
5321 p = handle_braces (p);
5327 p = handle_spec_function (p);
5333 obstack_1grow (&obstack, '%');
5340 while (p[len] && p[len] != ' ' && p[len] != '%')
5342 suffix_subst = save_string (p - 1, len + 1);
5347 /* Henceforth ignore the option(s) matching the pattern
5352 int have_wildcard = 0;
5355 while (p[len] && p[len] != ' ' && p[len] != '\t')
5358 if (p[len-1] == '*')
5361 for (i = 0; i < n_switches; i++)
5362 if (!strncmp (switches[i].part1, p, len - have_wildcard)
5363 && (have_wildcard || switches[i].part1[len] == '\0'))
5365 switches[i].live_cond |= SWITCH_IGNORE;
5366 switches[i].validated = 1;
5374 if (soft_matched_part)
5376 do_spec_1 (soft_matched_part, 1, NULL);
5377 do_spec_1 (" ", 0, NULL);
5380 /* Catch the case where a spec string contains something like
5381 '%{foo:%*}'. i.e. there is no * in the pattern on the left
5382 hand side of the :. */
5383 error ("spec failure: '%%*' has not been initialized by pattern match");
5386 /* Process a string found as the value of a spec given by name.
5387 This feature allows individual machine descriptions
5388 to add and use their own specs.
5389 %[...] modifies -D options the way %P does;
5390 %(...) uses the spec unmodified. */
5392 error ("warning: use of obsolete %%[ operator in specs");
5395 const char *name = p;
5396 struct spec_list *sl;
5399 /* The string after the S/P is the name of a spec that is to be
5401 while (*p && *p != ')' && *p != ']')
5404 /* See if it's in the list. */
5405 for (len = p - name, sl = specs; sl; sl = sl->next)
5406 if (sl->name_len == len && !strncmp (sl->name, name, len))
5408 name = *(sl->ptr_spec);
5410 notice ("Processing spec %c%s%c, which is '%s'\n",
5411 c, sl->name, (c == '(') ? ')' : ']', name);
5420 value = do_spec_1 (name, 0, NULL);
5426 char *x = (char *) alloca (strlen (name) * 2 + 1);
5428 const char *y = name;
5431 /* Copy all of NAME into BUF, but put __ after
5432 every -D and at the end of each arg. */
5435 if (! strncmp (y, "-D", 2))
5446 && (*y == ' ' || *y == '\t' || *y == '='
5447 || *y == '}' || *y == 0))
5460 value = do_spec_1 (buf, 0, NULL);
5466 /* Discard the closing paren or bracket. */
5473 error ("spec failure: unrecognized spec option '%c'", c);
5479 /* Backslash: treat next character as ordinary. */
5484 /* Ordinary character: put it into the current argument. */
5485 obstack_1grow (&obstack, c);
5489 /* End of string. If we are processing a spec function, we need to
5490 end any pending argument. */
5491 if (processing_spec_function)
5497 /* Look up a spec function. */
5499 static const struct spec_function *
5500 lookup_spec_function (const char *name)
5502 const struct spec_function *sf;
5504 for (sf = static_spec_functions; sf->name != NULL; sf++)
5505 if (strcmp (sf->name, name) == 0)
5511 /* Evaluate a spec function. */
5514 eval_spec_function (const char *func, const char *args)
5516 const struct spec_function *sf;
5517 const char *funcval;
5519 /* Saved spec processing context. */
5520 int save_argbuf_index;
5521 int save_argbuf_length;
5522 const char **save_argbuf;
5525 int save_delete_this_arg;
5526 int save_this_is_output_file;
5527 int save_this_is_library_file;
5528 int save_input_from_pipe;
5529 const char *save_suffix_subst;
5532 sf = lookup_spec_function (func);
5534 fatal ("unknown spec function '%s'", func);
5536 /* Push the spec processing context. */
5537 save_argbuf_index = argbuf_index;
5538 save_argbuf_length = argbuf_length;
5539 save_argbuf = argbuf;
5541 save_arg_going = arg_going;
5542 save_delete_this_arg = delete_this_arg;
5543 save_this_is_output_file = this_is_output_file;
5544 save_this_is_library_file = this_is_library_file;
5545 save_input_from_pipe = input_from_pipe;
5546 save_suffix_subst = suffix_subst;
5548 /* Create a new spec processing context, and build the function
5552 if (do_spec_2 (args) < 0)
5553 fatal ("error in args to spec function '%s'", func);
5555 /* argbuf_index is an index for the next argument to be inserted, and
5556 so contains the count of the args already inserted. */
5558 funcval = (*sf->func) (argbuf_index, argbuf);
5560 /* Pop the spec processing context. */
5561 argbuf_index = save_argbuf_index;
5562 argbuf_length = save_argbuf_length;
5564 argbuf = save_argbuf;
5566 arg_going = save_arg_going;
5567 delete_this_arg = save_delete_this_arg;
5568 this_is_output_file = save_this_is_output_file;
5569 this_is_library_file = save_this_is_library_file;
5570 input_from_pipe = save_input_from_pipe;
5571 suffix_subst = save_suffix_subst;
5576 /* Handle a spec function call of the form:
5580 ARGS is processed as a spec in a separate context and split into an
5581 argument vector in the normal fashion. The function returns a string
5582 containing a spec which we then process in the caller's context, or
5583 NULL if no processing is required. */
5586 handle_spec_function (const char *p)
5589 const char *endp, *funcval;
5592 processing_spec_function++;
5594 /* Get the function name. */
5595 for (endp = p; *endp != '\0'; endp++)
5597 if (*endp == '(') /* ) */
5599 /* Only allow [A-Za-z0-9], -, and _ in function names. */
5600 if (!ISALNUM (*endp) && !(*endp == '-' || *endp == '_'))
5601 fatal ("malformed spec function name");
5603 if (*endp != '(') /* ) */
5604 fatal ("no arguments for spec function");
5605 func = save_string (p, endp - p);
5608 /* Get the arguments. */
5609 for (count = 0; *endp != '\0'; endp++)
5618 else if (*endp == '(') /* ) */
5623 fatal ("malformed spec function arguments");
5624 args = save_string (p, endp - p);
5627 /* p now points to just past the end of the spec function expression. */
5629 funcval = eval_spec_function (func, args);
5630 if (funcval != NULL && do_spec_1 (funcval, 0, NULL) < 0)
5636 processing_spec_function--;
5641 /* Inline subroutine of handle_braces. Returns true if the current
5642 input suffix matches the atom bracketed by ATOM and END_ATOM. */
5644 input_suffix_matches (const char *atom, const char *end_atom)
5646 return (input_suffix
5647 && !strncmp (input_suffix, atom, end_atom - atom)
5648 && input_suffix[end_atom - atom] == '\0');
5651 /* Subroutine of handle_braces. Returns true if the current
5652 input file's spec name matches the atom bracketed by ATOM and END_ATOM. */
5654 input_spec_matches (const char *atom, const char *end_atom)
5656 return (input_file_compiler
5657 && input_file_compiler->suffix
5658 && input_file_compiler->suffix[0] != '\0'
5659 && !strncmp (input_file_compiler->suffix + 1, atom,
5661 && input_file_compiler->suffix[end_atom - atom + 1] == '\0');
5664 /* Subroutine of handle_braces. Returns true if a switch
5665 matching the atom bracketed by ATOM and END_ATOM appeared on the
5668 switch_matches (const char *atom, const char *end_atom, int starred)
5671 int len = end_atom - atom;
5672 int plen = starred ? len : -1;
5674 for (i = 0; i < n_switches; i++)
5675 if (!strncmp (switches[i].part1, atom, len)
5676 && (starred || switches[i].part1[len] == '\0')
5677 && check_live_switch (i, plen))
5683 /* Inline subroutine of handle_braces. Mark all of the switches which
5684 match ATOM (extends to END_ATOM; STARRED indicates whether there
5685 was a star after the atom) for later processing. */
5687 mark_matching_switches (const char *atom, const char *end_atom, int starred)
5690 int len = end_atom - atom;
5691 int plen = starred ? len : -1;
5693 for (i = 0; i < n_switches; i++)
5694 if (!strncmp (switches[i].part1, atom, len)
5695 && (starred || switches[i].part1[len] == '\0')
5696 && check_live_switch (i, plen))
5697 switches[i].ordering = 1;
5700 /* Inline subroutine of handle_braces. Process all the currently
5701 marked switches through give_switch, and clear the marks. */
5703 process_marked_switches (void)
5707 for (i = 0; i < n_switches; i++)
5708 if (switches[i].ordering == 1)
5710 switches[i].ordering = 0;
5715 /* Handle a %{ ... } construct. P points just inside the leading {.
5716 Returns a pointer one past the end of the brace block, or 0
5717 if we call do_spec_1 and that returns -1. */
5720 handle_braces (const char *p)
5722 const char *atom, *end_atom;
5723 const char *d_atom = NULL, *d_end_atom = NULL;
5724 const char *orig = p;
5732 bool a_must_be_last = false;
5733 bool ordered_set = false;
5734 bool disjunct_set = false;
5735 bool disj_matched = false;
5736 bool disj_starred = true;
5737 bool n_way_choice = false;
5738 bool n_way_matched = false;
5740 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
5747 /* Scan one "atom" (S in the description above of %{}, possibly
5748 with '!', '.', '@', ',', or '*' modifiers). */
5750 a_is_suffix = false;
5751 a_is_starred = false;
5752 a_is_negated = false;
5753 a_is_spectype = false;
5757 p++, a_is_negated = true;
5761 p++, a_is_suffix = true;
5763 p++, a_is_spectype = true;
5766 while (ISIDNUM(*p) || *p == '-' || *p == '+' || *p == '='
5767 || *p == ',' || *p == '.' || *p == '@')
5772 p++, a_is_starred = 1;
5778 /* Substitute the switch(es) indicated by the current atom. */
5780 if (disjunct_set || n_way_choice || a_is_negated || a_is_suffix
5781 || a_is_spectype || atom == end_atom)
5784 mark_matching_switches (atom, end_atom, a_is_starred);
5787 process_marked_switches ();
5791 /* Substitute some text if the current atom appears as a switch
5793 disjunct_set = true;
5797 if (atom == end_atom)
5799 if (!n_way_choice || disj_matched || *p == '|'
5800 || a_is_negated || a_is_suffix || a_is_spectype
5804 /* An empty term may appear as the last choice of an
5805 N-way choice set; it means "otherwise". */
5806 a_must_be_last = true;
5807 disj_matched = !n_way_matched;
5808 disj_starred = false;
5812 if ((a_is_suffix || a_is_spectype) && a_is_starred)
5816 disj_starred = false;
5818 /* Don't bother testing this atom if we already have a
5820 if (!disj_matched && !n_way_matched)
5823 a_matched = input_suffix_matches (atom, end_atom);
5824 else if (a_is_spectype)
5825 a_matched = input_spec_matches (atom, end_atom);
5827 a_matched = switch_matches (atom, end_atom, a_is_starred);
5829 if (a_matched != a_is_negated)
5831 disj_matched = true;
5833 d_end_atom = end_atom;
5840 /* Found the body, that is, the text to substitute if the
5841 current disjunction matches. */
5842 p = process_brace_body (p + 1, d_atom, d_end_atom, disj_starred,
5843 disj_matched && !n_way_matched);
5847 /* If we have an N-way choice, reset state for the next
5851 n_way_choice = true;
5852 n_way_matched |= disj_matched;
5853 disj_matched = false;
5854 disj_starred = true;
5855 d_atom = d_end_atom = NULL;
5864 while (*p++ != '}');
5869 fatal ("braced spec '%s' is invalid at '%c'", orig, *p);
5874 /* Subroutine of handle_braces. Scan and process a brace substitution body
5875 (X in the description of %{} syntax). P points one past the colon;
5876 ATOM and END_ATOM bracket the first atom which was found to be true
5877 (present) in the current disjunction; STARRED indicates whether all
5878 the atoms in the current disjunction were starred (for syntax validation);
5879 MATCHED indicates whether the disjunction matched or not, and therefore
5880 whether or not the body is to be processed through do_spec_1 or just
5881 skipped. Returns a pointer to the closing } or ;, or 0 if do_spec_1
5885 process_brace_body (const char *p, const char *atom, const char *end_atom,
5886 int starred, int matched)
5888 const char *body, *end_body;
5889 unsigned int nesting_level;
5890 bool have_subst = false;
5892 /* Locate the closing } or ;, honoring nested braces.
5893 Trim trailing whitespace. */
5902 if (!--nesting_level)
5905 else if (*p == ';' && nesting_level == 1)
5907 else if (*p == '%' && p[1] == '*' && nesting_level == 1)
5909 else if (*p == '\0')
5915 while (end_body[-1] == ' ' || end_body[-1] == '\t')
5918 if (have_subst && !starred)
5923 /* Copy the substitution body to permanent storage and execute it.
5924 If have_subst is false, this is a simple matter of running the
5925 body through do_spec_1... */
5926 char *string = save_string (body, end_body - body);
5929 if (do_spec_1 (string, 0, NULL) < 0)
5934 /* ... but if have_subst is true, we have to process the
5935 body once for each matching switch, with %* set to the
5936 variant part of the switch. */
5937 unsigned int hard_match_len = end_atom - atom;
5940 for (i = 0; i < n_switches; i++)
5941 if (!strncmp (switches[i].part1, atom, hard_match_len)
5942 && check_live_switch (i, hard_match_len))
5944 if (do_spec_1 (string, 0,
5945 &switches[i].part1[hard_match_len]) < 0)
5947 /* Pass any arguments this switch has. */
5949 suffix_subst = NULL;
5957 fatal ("braced spec body '%s' is invalid", body);
5960 /* Return 0 iff switch number SWITCHNUM is obsoleted by a later switch
5961 on the command line. PREFIX_LENGTH is the length of XXX in an {XXX*}
5962 spec, or -1 if either exact match or %* is used.
5964 A -O switch is obsoleted by a later -O switch. A -f, -m, or -W switch
5965 whose value does not begin with "no-" is obsoleted by the same value
5966 with the "no-", similarly for a switch with the "no-" prefix. */
5969 check_live_switch (int switchnum, int prefix_length)
5971 const char *name = switches[switchnum].part1;
5974 /* In the common case of {<at-most-one-letter>*}, a negating
5975 switch would always match, so ignore that case. We will just
5976 send the conflicting switches to the compiler phase. */
5977 if (prefix_length >= 0 && prefix_length <= 1)
5980 /* If we already processed this switch and determined if it was
5981 live or not, return our past determination. */
5982 if (switches[switchnum].live_cond != 0)
5983 return ((switches[switchnum].live_cond & SWITCH_LIVE) != 0
5984 && (switches[switchnum].live_cond & SWITCH_FALSE) == 0);
5986 /* Now search for duplicate in a manner that depends on the name. */
5990 for (i = switchnum + 1; i < n_switches; i++)
5991 if (switches[i].part1[0] == 'O')
5993 switches[switchnum].validated = 1;
5994 switches[switchnum].live_cond = SWITCH_FALSE;
5999 case 'W': case 'f': case 'm':
6000 if (! strncmp (name + 1, "no-", 3))
6002 /* We have Xno-YYY, search for XYYY. */
6003 for (i = switchnum + 1; i < n_switches; i++)
6004 if (switches[i].part1[0] == name[0]
6005 && ! strcmp (&switches[i].part1[1], &name[4]))
6007 switches[switchnum].validated = 1;
6008 switches[switchnum].live_cond = SWITCH_FALSE;
6014 /* We have XYYY, search for Xno-YYY. */
6015 for (i = switchnum + 1; i < n_switches; i++)
6016 if (switches[i].part1[0] == name[0]
6017 && switches[i].part1[1] == 'n'
6018 && switches[i].part1[2] == 'o'
6019 && switches[i].part1[3] == '-'
6020 && !strcmp (&switches[i].part1[4], &name[1]))
6022 switches[switchnum].validated = 1;
6023 switches[switchnum].live_cond = SWITCH_FALSE;
6030 /* Otherwise the switch is live. */
6031 switches[switchnum].live_cond |= SWITCH_LIVE;
6035 /* Pass a switch to the current accumulating command
6036 in the same form that we received it.
6037 SWITCHNUM identifies the switch; it is an index into
6038 the vector of switches gcc received, which is `switches'.
6039 This cannot fail since it never finishes a command line.
6041 If OMIT_FIRST_WORD is nonzero, then we omit .part1 of the argument. */
6044 give_switch (int switchnum, int omit_first_word)
6046 if ((switches[switchnum].live_cond & SWITCH_IGNORE) != 0)
6049 if (!omit_first_word)
6051 do_spec_1 ("-", 0, NULL);
6052 do_spec_1 (switches[switchnum].part1, 1, NULL);
6055 if (switches[switchnum].args != 0)
6058 for (p = switches[switchnum].args; *p; p++)
6060 const char *arg = *p;
6062 do_spec_1 (" ", 0, NULL);
6065 unsigned length = strlen (arg);
6068 while (length-- && !IS_DIR_SEPARATOR (arg[length]))
6069 if (arg[length] == '.')
6071 (CONST_CAST(char *, arg))[length] = 0;
6075 do_spec_1 (arg, 1, NULL);
6077 (CONST_CAST(char *, arg))[length] = '.';
6078 do_spec_1 (suffix_subst, 1, NULL);
6081 do_spec_1 (arg, 1, NULL);
6085 do_spec_1 (" ", 0, NULL);
6086 switches[switchnum].validated = 1;
6089 /* Search for a file named NAME trying various prefixes including the
6090 user's -B prefix and some standard ones.
6091 Return the absolute file name found. If nothing is found, return NAME. */
6094 find_file (const char *name)
6096 char *newname = find_a_file (&startfile_prefixes, name, R_OK, true);
6097 return newname ? newname : name;
6100 /* Determine whether a directory exists. If LINKER, return 0 for
6101 certain fixed names not needed by the linker. */
6104 is_directory (const char *path1, bool linker)
6111 /* Ensure the string ends with "/.". The resulting path will be a
6112 directory even if the given path is a symbolic link. */
6113 len1 = strlen (path1);
6114 path = (char *) alloca (3 + len1);
6115 memcpy (path, path1, len1);
6117 if (!IS_DIR_SEPARATOR (cp[-1]))
6118 *cp++ = DIR_SEPARATOR;
6122 /* Exclude directories that the linker is known to search. */
6124 && IS_DIR_SEPARATOR (path[0])
6126 && strncmp (path + 1, "lib", 3) == 0)
6128 && strncmp (path + 1, "usr", 3) == 0
6129 && IS_DIR_SEPARATOR (path[4])
6130 && strncmp (path + 5, "lib", 3) == 0)))
6133 return (stat (path, &st) >= 0 && S_ISDIR (st.st_mode));
6136 /* Set up the various global variables to indicate that we're processing
6137 the input file named FILENAME. */
6140 set_input (const char *filename)
6144 input_filename = filename;
6145 input_filename_length = strlen (input_filename);
6147 input_basename = input_filename;
6148 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
6149 /* Skip drive name so 'x:foo' is handled properly. */
6150 if (input_basename[1] == ':')
6151 input_basename += 2;
6153 for (p = input_basename; *p; p++)
6154 if (IS_DIR_SEPARATOR (*p))
6155 input_basename = p + 1;
6157 /* Find a suffix starting with the last period,
6158 and set basename_length to exclude that suffix. */
6159 basename_length = strlen (input_basename);
6160 suffixed_basename_length = basename_length;
6161 p = input_basename + basename_length;
6162 while (p != input_basename && *p != '.')
6164 if (*p == '.' && p != input_basename)
6166 basename_length = p - input_basename;
6167 input_suffix = p + 1;
6172 /* If a spec for 'g', 'u', or 'U' is seen with -save-temps then
6173 we will need to do a stat on the input_filename. The
6174 INPUT_STAT_SET signals that the stat is needed. */
6178 /* On fatal signals, delete all the temporary files. */
6181 fatal_error (int signum)
6183 signal (signum, SIG_DFL);
6184 delete_failure_queue ();
6185 delete_temp_files ();
6186 /* Get the same signal again, this time not handled,
6187 so its normal effect occurs. */
6188 kill (getpid (), signum);
6191 extern int main (int, char **);
6194 main (int argc, char **argv)
6198 int linker_was_run = 0;
6199 int lang_n_infiles = 0;
6200 int num_linker_inputs = 0;
6201 char *explicit_link_files;
6204 struct user_specs *uptr;
6205 char **old_argv = argv;
6207 /* Initialize here, not in definition. The IRIX 6 O32 cc sometimes chokes
6208 on ?: in file-scope variable initializations. */
6209 asm_debug = ASM_DEBUG_SPEC;
6211 p = argv[0] + strlen (argv[0]);
6212 while (p != argv[0] && !IS_DIR_SEPARATOR (p[-1]))
6216 xmalloc_set_program_name (programname);
6218 expandargv (&argc, &argv);
6220 /* Determine if any expansions were made. */
6221 if (argv != old_argv)
6222 at_file_supplied = true;
6224 prune_options (&argc, &argv);
6226 #ifdef GCC_DRIVER_HOST_INITIALIZATION
6227 /* Perform host dependent initialization when needed. */
6228 GCC_DRIVER_HOST_INITIALIZATION;
6231 /* Unlock the stdio streams. */
6232 unlock_std_streams ();
6234 gcc_init_libintl ();
6236 if (signal (SIGINT, SIG_IGN) != SIG_IGN)
6237 signal (SIGINT, fatal_error);
6239 if (signal (SIGHUP, SIG_IGN) != SIG_IGN)
6240 signal (SIGHUP, fatal_error);
6242 if (signal (SIGTERM, SIG_IGN) != SIG_IGN)
6243 signal (SIGTERM, fatal_error);
6245 if (signal (SIGPIPE, SIG_IGN) != SIG_IGN)
6246 signal (SIGPIPE, fatal_error);
6249 /* We *MUST* set SIGCHLD to SIG_DFL so that the wait4() call will
6250 receive the signal. A different setting is inheritable */
6251 signal (SIGCHLD, SIG_DFL);
6254 /* Allocate the argument vector. */
6257 obstack_init (&obstack);
6259 /* Build multilib_select, et. al from the separate lines that make up each
6260 multilib selection. */
6262 const char *const *q = multilib_raw;
6265 obstack_init (&multilib_obstack);
6266 while ((p = *q++) != (char *) 0)
6267 obstack_grow (&multilib_obstack, p, strlen (p));
6269 obstack_1grow (&multilib_obstack, 0);
6270 multilib_select = XOBFINISH (&multilib_obstack, const char *);
6272 q = multilib_matches_raw;
6273 while ((p = *q++) != (char *) 0)
6274 obstack_grow (&multilib_obstack, p, strlen (p));
6276 obstack_1grow (&multilib_obstack, 0);
6277 multilib_matches = XOBFINISH (&multilib_obstack, const char *);
6279 q = multilib_exclusions_raw;
6280 while ((p = *q++) != (char *) 0)
6281 obstack_grow (&multilib_obstack, p, strlen (p));
6283 obstack_1grow (&multilib_obstack, 0);
6284 multilib_exclusions = XOBFINISH (&multilib_obstack, const char *);
6287 for (i = 0; i < ARRAY_SIZE (multilib_defaults_raw); i++)
6290 obstack_1grow (&multilib_obstack, ' ');
6291 obstack_grow (&multilib_obstack,
6292 multilib_defaults_raw[i],
6293 strlen (multilib_defaults_raw[i]));
6297 obstack_1grow (&multilib_obstack, 0);
6298 multilib_defaults = XOBFINISH (&multilib_obstack, const char *);
6301 /* Set up to remember the pathname of gcc and any options
6302 needed for collect. We use argv[0] instead of programname because
6303 we need the complete pathname. */
6304 obstack_init (&collect_obstack);
6305 obstack_grow (&collect_obstack, "COLLECT_GCC=", sizeof ("COLLECT_GCC=") - 1);
6306 obstack_grow (&collect_obstack, argv[0], strlen (argv[0]) + 1);
6307 xputenv (XOBFINISH (&collect_obstack, char *));
6309 #ifdef INIT_ENVIRONMENT
6310 /* Set up any other necessary machine specific environment variables. */
6311 xputenv (INIT_ENVIRONMENT);
6314 /* Make a table of what switches there are (switches, n_switches).
6315 Make a table of specified input files (infiles, n_infiles).
6316 Decode switches that are handled locally. */
6318 process_command (argc, (const char **) argv);
6320 /* Initialize the vector of specs to just the default.
6321 This means one element containing 0s, as a terminator. */
6323 compilers = XNEWVAR (struct compiler, sizeof default_compilers);
6324 memcpy (compilers, default_compilers, sizeof default_compilers);
6325 n_compilers = n_default_compilers;
6327 /* Read specs from a file if there is one. */
6329 machine_suffix = concat (spec_machine, dir_separator_str,
6330 spec_version, dir_separator_str, NULL);
6331 just_machine_suffix = concat (spec_machine, dir_separator_str, NULL);
6333 specs_file = find_a_file (&startfile_prefixes, "specs", R_OK, true);
6334 /* Read the specs file unless it is a default one. */
6335 if (specs_file != 0 && strcmp (specs_file, "specs"))
6336 read_specs (specs_file, TRUE);
6340 /* We need to check standard_exec_prefix/just_machine_suffix/specs
6341 for any override of as, ld and libraries. */
6342 specs_file = (char *) alloca (strlen (standard_exec_prefix)
6343 + strlen (just_machine_suffix) + sizeof ("specs"));
6345 strcpy (specs_file, standard_exec_prefix);
6346 strcat (specs_file, just_machine_suffix);
6347 strcat (specs_file, "specs");
6348 if (access (specs_file, R_OK) == 0)
6349 read_specs (specs_file, TRUE);
6351 /* Process any configure-time defaults specified for the command line
6352 options, via OPTION_DEFAULT_SPECS. */
6353 for (i = 0; i < ARRAY_SIZE (option_default_specs); i++)
6354 do_option_spec (option_default_specs[i].name,
6355 option_default_specs[i].spec);
6357 /* Process DRIVER_SELF_SPECS, adding any new options to the end
6358 of the command line. */
6360 for (i = 0; i < ARRAY_SIZE (driver_self_specs); i++)
6361 do_self_spec (driver_self_specs[i]);
6363 /* If not cross-compiling, look for executables in the standard
6365 if (*cross_compile == '0')
6367 if (*md_exec_prefix)
6369 add_prefix (&exec_prefixes, md_exec_prefix, "GCC",
6370 PREFIX_PRIORITY_LAST, 0, 0);
6374 /* Process sysroot_suffix_spec. */
6375 if (*sysroot_suffix_spec != 0
6376 && do_spec_2 (sysroot_suffix_spec) == 0)
6378 if (argbuf_index > 1)
6379 error ("spec failure: more than one arg to SYSROOT_SUFFIX_SPEC");
6380 else if (argbuf_index == 1)
6381 target_sysroot_suffix = xstrdup (argbuf[argbuf_index -1]);
6384 #ifdef HAVE_LD_SYSROOT
6385 /* Pass the --sysroot option to the linker, if it supports that. If
6386 there is a sysroot_suffix_spec, it has already been processed by
6387 this point, so target_system_root really is the system root we
6389 if (target_system_root)
6391 obstack_grow (&obstack, "%(sysroot_spec) ", strlen ("%(sysroot_spec) "));
6392 obstack_grow0 (&obstack, link_spec, strlen (link_spec));
6393 set_spec ("link", XOBFINISH (&obstack, const char *));
6397 /* Process sysroot_hdrs_suffix_spec. */
6398 if (*sysroot_hdrs_suffix_spec != 0
6399 && do_spec_2 (sysroot_hdrs_suffix_spec) == 0)
6401 if (argbuf_index > 1)
6402 error ("spec failure: more than one arg to SYSROOT_HEADERS_SUFFIX_SPEC");
6403 else if (argbuf_index == 1)
6404 target_sysroot_hdrs_suffix = xstrdup (argbuf[argbuf_index -1]);
6407 /* Look for startfiles in the standard places. */
6408 if (*startfile_prefix_spec != 0
6409 && do_spec_2 (startfile_prefix_spec) == 0
6410 && do_spec_1 (" ", 0, NULL) == 0)
6413 for (ndx = 0; ndx < argbuf_index; ndx++)
6414 add_sysrooted_prefix (&startfile_prefixes, argbuf[ndx], "BINUTILS",
6415 PREFIX_PRIORITY_LAST, 0, 1);
6417 /* We should eventually get rid of all these and stick to
6418 startfile_prefix_spec exclusively. */
6419 else if (*cross_compile == '0' || target_system_root)
6421 if (*md_startfile_prefix)
6422 add_sysrooted_prefix (&startfile_prefixes, md_startfile_prefix,
6423 "GCC", PREFIX_PRIORITY_LAST, 0, 1);
6425 if (*md_startfile_prefix_1)
6426 add_sysrooted_prefix (&startfile_prefixes, md_startfile_prefix_1,
6427 "GCC", PREFIX_PRIORITY_LAST, 0, 1);
6429 /* If standard_startfile_prefix is relative, base it on
6430 standard_exec_prefix. This lets us move the installed tree
6431 as a unit. If GCC_EXEC_PREFIX is defined, base
6432 standard_startfile_prefix on that as well.
6434 If the prefix is relative, only search it for native compilers;
6435 otherwise we will search a directory containing host libraries. */
6436 if (IS_ABSOLUTE_PATH (standard_startfile_prefix))
6437 add_sysrooted_prefix (&startfile_prefixes,
6438 standard_startfile_prefix, "BINUTILS",
6439 PREFIX_PRIORITY_LAST, 0, 1);
6440 else if (*cross_compile == '0')
6442 add_prefix (&startfile_prefixes,
6443 concat (gcc_exec_prefix
6444 ? gcc_exec_prefix : standard_exec_prefix,
6446 standard_startfile_prefix, NULL),
6447 NULL, PREFIX_PRIORITY_LAST, 0, 1);
6450 /* Sysrooted prefixes are relocated because target_system_root is
6451 also relocated by gcc_exec_prefix. */
6452 if (*standard_startfile_prefix_1)
6453 add_sysrooted_prefix (&startfile_prefixes,
6454 standard_startfile_prefix_1, "BINUTILS",
6455 PREFIX_PRIORITY_LAST, 0, 1);
6456 if (*standard_startfile_prefix_2)
6457 add_sysrooted_prefix (&startfile_prefixes,
6458 standard_startfile_prefix_2, "BINUTILS",
6459 PREFIX_PRIORITY_LAST, 0, 1);
6462 /* Process any user specified specs in the order given on the command
6464 for (uptr = user_specs_head; uptr; uptr = uptr->next)
6466 char *filename = find_a_file (&startfile_prefixes, uptr->filename,
6468 read_specs (filename ? filename : uptr->filename, FALSE);
6471 /* If we have a GCC_EXEC_PREFIX envvar, modify it for cpp's sake. */
6472 if (gcc_exec_prefix)
6473 gcc_exec_prefix = concat (gcc_exec_prefix, spec_machine, dir_separator_str,
6474 spec_version, dir_separator_str, NULL);
6476 /* Now we have the specs.
6477 Set the `valid' bits for switches that match anything in any spec. */
6479 validate_all_switches ();
6481 /* Now that we have the switches and the specs, set
6482 the subdirectory based on the options. */
6483 set_multilib_dir ();
6485 /* Warn about any switches that no pass was interested in. */
6487 for (i = 0; (int) i < n_switches; i++)
6488 if (! switches[i].validated)
6489 error ("unrecognized option '-%s'", switches[i].part1);
6491 /* Obey some of the options. */
6493 if (print_search_dirs)
6495 printf (_("install: %s%s\n"),
6496 gcc_exec_prefix ? gcc_exec_prefix : standard_exec_prefix,
6497 gcc_exec_prefix ? "" : machine_suffix);
6498 printf (_("programs: %s\n"),
6499 build_search_list (&exec_prefixes, "", false, false));
6500 printf (_("libraries: %s\n"),
6501 build_search_list (&startfile_prefixes, "", false, true));
6505 if (print_file_name)
6507 printf ("%s\n", find_file (print_file_name));
6511 if (print_prog_name)
6513 char *newname = find_a_file (&exec_prefixes, print_prog_name, X_OK, 0);
6514 printf ("%s\n", (newname ? newname : print_prog_name));
6518 if (print_multi_lib)
6520 print_multilib_info ();
6524 if (print_multi_directory)
6526 if (multilib_dir == NULL)
6529 printf ("%s\n", multilib_dir);
6533 if (print_multi_os_directory)
6535 if (multilib_os_dir == NULL)
6538 printf ("%s\n", multilib_os_dir);
6542 if (print_sysroot_headers_suffix)
6544 if (*sysroot_hdrs_suffix_spec)
6546 printf("%s\n", (target_sysroot_hdrs_suffix
6547 ? target_sysroot_hdrs_suffix
6552 /* The error status indicates that only one set of fixed
6553 headers should be built. */
6554 fatal ("not configured with sysroot headers suffix");
6557 if (print_help_list)
6563 printf (_("\nFor bug reporting instructions, please see:\n"));
6564 printf ("%s.\n", bug_report_url);
6569 /* We do not exit here. Instead we have created a fake input file
6570 called 'help-dummy' which needs to be compiled, and we pass this
6571 on the various sub-processes, along with the --help switch. */
6579 notice ("Target: %s\n", spec_machine);
6580 notice ("Configured with: %s\n", configuration_arguments);
6582 #ifdef THREAD_MODEL_SPEC
6583 /* We could have defined THREAD_MODEL_SPEC to "%*" by default,
6584 but there's no point in doing all this processing just to get
6585 thread_model back. */
6586 obstack_init (&obstack);
6587 do_spec_1 (THREAD_MODEL_SPEC, 0, thread_model);
6588 obstack_1grow (&obstack, '\0');
6589 thrmod = XOBFINISH (&obstack, const char *);
6591 thrmod = thread_model;
6594 notice ("Thread model: %s\n", thrmod);
6596 /* compiler_version is truncated at the first space when initialized
6597 from version string, so truncate version_string at the first space
6598 before comparing. */
6599 for (n = 0; version_string[n]; n++)
6600 if (version_string[n] == ' ')
6603 if (! strncmp (version_string, compiler_version, n)
6604 && compiler_version[n] == 0)
6605 notice ("gcc version %s %s\n", version_string, pkgversion_string);
6607 notice ("gcc driver version %s %sexecuting gcc version %s\n",
6608 version_string, pkgversion_string, compiler_version);
6614 if (n_infiles == added_libraries)
6615 fatal ("no input files");
6617 /* Make a place to record the compiler output file names
6618 that correspond to the input files. */
6621 i += lang_specific_extra_outfiles;
6622 outfiles = XCNEWVEC (const char *, i);
6624 /* Record which files were specified explicitly as link input. */
6626 explicit_link_files = XCNEWVEC (char, n_infiles);
6629 combine_inputs = true;
6631 combine_inputs = false;
6633 for (i = 0; (int) i < n_infiles; i++)
6635 const char *name = infiles[i].name;
6636 struct compiler *compiler = lookup_compiler (name,
6638 infiles[i].language);
6640 if (compiler && !(compiler->combinable))
6641 combine_inputs = false;
6643 if (lang_n_infiles > 0 && compiler != input_file_compiler
6644 && infiles[i].language && infiles[i].language[0] != '*')
6645 infiles[i].incompiler = compiler;
6649 input_file_compiler = compiler;
6650 infiles[i].incompiler = compiler;
6654 /* Since there is no compiler for this input file, assume it is a
6656 explicit_link_files[i] = 1;
6657 infiles[i].incompiler = NULL;
6659 infiles[i].compiled = false;
6660 infiles[i].preprocessed = false;
6663 if (!combine_inputs && have_c && have_o && lang_n_infiles > 1)
6664 fatal ("cannot specify -o with -c or -S with multiple files");
6666 if (combine_flag && save_temps_flag)
6668 bool save_combine_inputs = combine_inputs;
6669 /* Must do a separate pre-processing pass for C & Objective-C files, to
6670 obtain individual .i files. */
6672 combine_inputs = false;
6673 for (i = 0; (int) i < n_infiles; i++)
6675 int this_file_error = 0;
6677 input_file_number = i;
6678 set_input (infiles[i].name);
6679 if (infiles[i].incompiler
6680 && (infiles[i].incompiler)->needs_preprocessing)
6681 input_file_compiler = infiles[i].incompiler;
6685 if (input_file_compiler)
6687 if (input_file_compiler->spec[0] == '#')
6689 error ("%s: %s compiler not installed on this system",
6690 input_filename, &input_file_compiler->spec[1]);
6691 this_file_error = 1;
6695 value = do_spec (input_file_compiler->spec);
6696 infiles[i].preprocessed = true;
6697 if (!have_o_argbuf_index)
6698 fatal ("spec '%s' is invalid", input_file_compiler->spec);
6699 infiles[i].name = argbuf[have_o_argbuf_index];
6700 infiles[i].incompiler
6701 = lookup_compiler (infiles[i].name,
6702 strlen (infiles[i].name),
6703 infiles[i].language);
6706 this_file_error = 1;
6710 if (this_file_error)
6712 delete_failure_queue ();
6716 clear_failure_queue ();
6718 combine_inputs = save_combine_inputs;
6721 for (i = 0; (int) i < n_infiles; i++)
6723 int this_file_error = 0;
6725 /* Tell do_spec what to substitute for %i. */
6727 input_file_number = i;
6728 set_input (infiles[i].name);
6730 if (infiles[i].compiled)
6733 /* Use the same thing in %o, unless cp->spec says otherwise. */
6735 outfiles[i] = input_filename;
6737 /* Figure out which compiler from the file's suffix. */
6739 if (! combine_inputs)
6741 = lookup_compiler (infiles[i].name, input_filename_length,
6742 infiles[i].language);
6744 input_file_compiler = infiles[i].incompiler;
6746 if (input_file_compiler)
6748 /* Ok, we found an applicable compiler. Run its spec. */
6750 if (input_file_compiler->spec[0] == '#')
6752 error ("%s: %s compiler not installed on this system",
6753 input_filename, &input_file_compiler->spec[1]);
6754 this_file_error = 1;
6758 value = do_spec (input_file_compiler->spec);
6759 infiles[i].compiled = true;
6761 this_file_error = 1;
6765 /* If this file's name does not contain a recognized suffix,
6766 record it as explicit linker input. */
6769 explicit_link_files[i] = 1;
6771 /* Clear the delete-on-failure queue, deleting the files in it
6772 if this compilation failed. */
6774 if (this_file_error)
6776 delete_failure_queue ();
6779 /* If this compilation succeeded, don't delete those files later. */
6780 clear_failure_queue ();
6783 /* Reset the input file name to the first compile/object file name, for use
6784 with %b in LINK_SPEC. We use the first input file that we can find
6785 a compiler to compile it instead of using infiles.language since for
6786 languages other than C we use aliases that we then lookup later. */
6791 for (i = 0; i < n_infiles ; i++)
6792 if (infiles[i].language && infiles[i].language[0] != '*')
6794 set_input (infiles[i].name);
6799 if (error_count == 0)
6801 /* Make sure INPUT_FILE_NUMBER points to first available open
6803 input_file_number = n_infiles;
6804 if (lang_specific_pre_link ())
6808 /* Determine if there are any linker input files. */
6809 num_linker_inputs = 0;
6810 for (i = 0; (int) i < n_infiles; i++)
6811 if (explicit_link_files[i] || outfiles[i] != NULL)
6812 num_linker_inputs++;
6814 /* Run ld to link all the compiler output files. */
6816 if (num_linker_inputs > 0 && error_count == 0 && print_subprocess_help < 2)
6818 int tmp = execution_count;
6820 /* We'll use ld if we can't find collect2. */
6821 if (! strcmp (linker_name_spec, "collect2"))
6823 char *s = find_a_file (&exec_prefixes, "collect2", X_OK, false);
6825 linker_name_spec = "ld";
6827 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
6829 putenv_from_prefixes (&exec_prefixes, "COMPILER_PATH", false);
6830 putenv_from_prefixes (&startfile_prefixes, LIBRARY_PATH_ENV, true);
6832 if (print_subprocess_help == 1)
6834 printf (_("\nLinker options\n==============\n\n"));
6835 printf (_("Use \"-Wl,OPTION\" to pass \"OPTION\""
6836 " to the linker.\n\n"));
6839 value = do_spec (link_command_spec);
6842 linker_was_run = (tmp != execution_count);
6845 /* If options said don't run linker,
6846 complain about input files to be given to the linker. */
6848 if (! linker_was_run && error_count == 0)
6849 for (i = 0; (int) i < n_infiles; i++)
6850 if (explicit_link_files[i]
6851 && !(infiles[i].language && infiles[i].language[0] == '*'))
6852 error ("%s: linker input file unused because linking not done",
6855 /* Delete some or all of the temporary files we made. */
6858 delete_failure_queue ();
6859 delete_temp_files ();
6861 if (print_help_list)
6863 printf (("\nFor bug reporting instructions, please see:\n"));
6864 printf ("%s\n", bug_report_url);
6867 return (signal_count != 0 ? 2
6868 : error_count > 0 ? (pass_exit_codes ? greatest_status : 1)
6872 /* Find the proper compilation spec for the file name NAME,
6873 whose length is LENGTH. LANGUAGE is the specified language,
6874 or 0 if this file is to be passed to the linker. */
6876 static struct compiler *
6877 lookup_compiler (const char *name, size_t length, const char *language)
6879 struct compiler *cp;
6881 /* If this was specified by the user to be a linker input, indicate that. */
6882 if (language != 0 && language[0] == '*')
6885 /* Otherwise, look for the language, if one is spec'd. */
6888 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6889 if (cp->suffix[0] == '@' && !strcmp (cp->suffix + 1, language))
6892 error ("language %s not recognized", language);
6896 /* Look for a suffix. */
6897 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6899 if (/* The suffix `-' matches only the file name `-'. */
6900 (!strcmp (cp->suffix, "-") && !strcmp (name, "-"))
6901 || (strlen (cp->suffix) < length
6902 /* See if the suffix matches the end of NAME. */
6903 && !strcmp (cp->suffix,
6904 name + length - strlen (cp->suffix))
6909 #if defined (OS2) ||defined (HAVE_DOS_BASED_FILE_SYSTEM)
6910 /* Look again, but case-insensitively this time. */
6912 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6914 if (/* The suffix `-' matches only the file name `-'. */
6915 (!strcmp (cp->suffix, "-") && !strcmp (name, "-"))
6916 || (strlen (cp->suffix) < length
6917 /* See if the suffix matches the end of NAME. */
6918 && ((!strcmp (cp->suffix,
6919 name + length - strlen (cp->suffix))
6920 || !strpbrk (cp->suffix, "ABCDEFGHIJKLMNOPQRSTUVWXYZ"))
6921 && !strcasecmp (cp->suffix,
6922 name + length - strlen (cp->suffix)))
6928 if (cp >= compilers)
6930 if (cp->spec[0] != '@')
6931 /* A non-alias entry: return it. */
6934 /* An alias entry maps a suffix to a language.
6935 Search for the language; pass 0 for NAME and LENGTH
6936 to avoid infinite recursion if language not found. */
6937 return lookup_compiler (NULL, 0, cp->spec + 1);
6943 save_string (const char *s, int len)
6945 char *result = XNEWVEC (char, len + 1);
6947 memcpy (result, s, len);
6953 pfatal_with_name (const char *name)
6955 perror_with_name (name);
6956 delete_temp_files ();
6961 perror_with_name (const char *name)
6963 error ("%s: %s", name, xstrerror (errno));
6966 /* Output an error message and exit. */
6969 fancy_abort (const char *file, int line, const char *func)
6971 fatal_ice ("internal gcc abort in %s, at %s:%d", func, file, line);
6974 /* Output an error message and exit. */
6977 fatal_ice (const char *cmsgid, ...)
6981 va_start (ap, cmsgid);
6983 fprintf (stderr, "%s: ", programname);
6984 vfprintf (stderr, _(cmsgid), ap);
6986 fprintf (stderr, "\n");
6987 delete_temp_files ();
6988 exit (pass_exit_codes ? ICE_EXIT_CODE : 1);
6992 fatal (const char *cmsgid, ...)
6996 va_start (ap, cmsgid);
6998 fprintf (stderr, "%s: ", programname);
6999 vfprintf (stderr, _(cmsgid), ap);
7001 fprintf (stderr, "\n");
7002 delete_temp_files ();
7006 /* The argument is actually c-format, not gcc-internal-format,
7007 but because functions with identical names are used through
7008 the rest of the compiler with gcc-internal-format, we just
7009 need to hope all users of these functions use the common
7010 subset between c-format and gcc-internal-format. */
7013 error (const char *gmsgid, ...)
7017 va_start (ap, gmsgid);
7018 fprintf (stderr, "%s: ", programname);
7019 vfprintf (stderr, _(gmsgid), ap);
7022 fprintf (stderr, "\n");
7026 notice (const char *cmsgid, ...)
7030 va_start (ap, cmsgid);
7031 vfprintf (stderr, _(cmsgid), ap);
7036 validate_switches_from_spec (const char *spec)
7038 const char *p = spec;
7041 if (c == '%' && (*p == '{' || *p == '<' || (*p == 'W' && *++p == '{')))
7042 /* We have a switch spec. */
7043 p = validate_switches (p + 1);
7047 validate_all_switches (void)
7049 struct compiler *comp;
7050 struct spec_list *spec;
7052 for (comp = compilers; comp->spec; comp++)
7053 validate_switches_from_spec (comp->spec);
7055 /* Look through the linked list of specs read from the specs file. */
7056 for (spec = specs; spec; spec = spec->next)
7057 validate_switches_from_spec (*spec->ptr_spec);
7059 validate_switches_from_spec (link_command_spec);
7062 /* Look at the switch-name that comes after START
7063 and mark as valid all supplied switches that match it. */
7066 validate_switches (const char *start)
7068 const char *p = start;
7072 bool suffix = false;
7073 bool starred = false;
7075 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
7084 if (*p == '.' || *p == ',')
7088 while (ISIDNUM (*p) || *p == '-' || *p == '+' || *p == '='
7089 || *p == ',' || *p == '.' || *p == '@')
7094 starred = true, p++;
7100 /* Mark all matching switches as valid. */
7101 for (i = 0; i < n_switches; i++)
7102 if (!strncmp (switches[i].part1, atom, len)
7103 && (starred || switches[i].part1[len] == 0))
7104 switches[i].validated = 1;
7108 if (*p && (p[-1] == '|' || p[-1] == '&'))
7111 if (*p && p[-1] == ':')
7113 while (*p && *p != ';' && *p != '}')
7118 if (*p == '{' || *p == '<')
7119 p = validate_switches (p+1);
7120 else if (p[0] == 'W' && p[1] == '{')
7121 p = validate_switches (p+2);
7128 if (*p && p[-1] == ';')
7142 static struct mdswitchstr *mdswitches;
7143 static int n_mdswitches;
7145 /* Check whether a particular argument was used. The first time we
7146 canonicalize the switches to keep only the ones we care about. */
7149 used_arg (const char *p, int len)
7154 const char *replace;
7159 static struct mswitchstr *mswitches;
7160 static int n_mswitches;
7165 struct mswitchstr *matches;
7169 /* Break multilib_matches into the component strings of string
7170 and replacement string. */
7171 for (q = multilib_matches; *q != '\0'; q++)
7176 = (struct mswitchstr *) alloca ((sizeof (struct mswitchstr)) * cnt);
7178 q = multilib_matches;
7187 fatal ("multilib spec '%s' is invalid", multilib_matches);
7191 matches[i].len = q - matches[i].str;
7193 matches[i].replace = ++q;
7194 while (*q != ';' && *q != '\0')
7197 goto invalid_matches;
7200 matches[i].rep_len = q - matches[i].replace;
7206 /* Now build a list of the replacement string for switches that we care
7207 about. Make sure we allocate at least one entry. This prevents
7208 xmalloc from calling fatal, and prevents us from re-executing this
7211 = XNEWVEC (struct mswitchstr, n_mdswitches + (n_switches ? n_switches : 1));
7212 for (i = 0; i < n_switches; i++)
7213 if ((switches[i].live_cond & SWITCH_IGNORE) == 0)
7215 int xlen = strlen (switches[i].part1);
7216 for (j = 0; j < cnt; j++)
7217 if (xlen == matches[j].len
7218 && ! strncmp (switches[i].part1, matches[j].str, xlen))
7220 mswitches[n_mswitches].str = matches[j].replace;
7221 mswitches[n_mswitches].len = matches[j].rep_len;
7222 mswitches[n_mswitches].replace = (char *) 0;
7223 mswitches[n_mswitches].rep_len = 0;
7229 /* Add MULTILIB_DEFAULTS switches too, as long as they were not present
7230 on the command line nor any options mutually incompatible with
7232 for (i = 0; i < n_mdswitches; i++)
7236 for (q = multilib_options; *q != '\0'; q++)
7242 while (strncmp (q, mdswitches[i].str, mdswitches[i].len) != 0
7243 || strchr (" /", q[mdswitches[i].len]) == NULL)
7245 while (*q != ' ' && *q != '/' && *q != '\0')
7252 if (*q != ' ' && *q != '\0')
7254 while (*r != ' ' && *r != '\0')
7257 while (*q != ' ' && *q != '/' && *q != '\0')
7260 if (used_arg (r, q - r))
7265 mswitches[n_mswitches].str = mdswitches[i].str;
7266 mswitches[n_mswitches].len = mdswitches[i].len;
7267 mswitches[n_mswitches].replace = (char *) 0;
7268 mswitches[n_mswitches].rep_len = 0;
7281 for (i = 0; i < n_mswitches; i++)
7282 if (len == mswitches[i].len && ! strncmp (p, mswitches[i].str, len))
7289 default_arg (const char *p, int len)
7293 for (i = 0; i < n_mdswitches; i++)
7294 if (len == mdswitches[i].len && ! strncmp (p, mdswitches[i].str, len))
7300 /* Work out the subdirectory to use based on the options. The format of
7301 multilib_select is a list of elements. Each element is a subdirectory
7302 name followed by a list of options followed by a semicolon. The format
7303 of multilib_exclusions is the same, but without the preceding
7304 directory. First gcc will check the exclusions, if none of the options
7305 beginning with an exclamation point are present, and all of the other
7306 options are present, then we will ignore this completely. Passing
7307 that, gcc will consider each multilib_select in turn using the same
7308 rules for matching the options. If a match is found, that subdirectory
7312 set_multilib_dir (void)
7315 unsigned int this_path_len;
7316 const char *this_path, *this_arg;
7317 const char *start, *end;
7319 int ok, ndfltok, first;
7322 start = multilib_defaults;
7323 while (*start == ' ' || *start == '\t')
7325 while (*start != '\0')
7328 while (*start != ' ' && *start != '\t' && *start != '\0')
7330 while (*start == ' ' || *start == '\t')
7338 mdswitches = XNEWVEC (struct mdswitchstr, n_mdswitches);
7339 for (start = multilib_defaults; *start != '\0'; start = end + 1)
7341 while (*start == ' ' || *start == '\t')
7347 for (end = start + 1;
7348 *end != ' ' && *end != '\t' && *end != '\0'; end++)
7351 obstack_grow (&multilib_obstack, start, end - start);
7352 obstack_1grow (&multilib_obstack, 0);
7353 mdswitches[i].str = XOBFINISH (&multilib_obstack, const char *);
7354 mdswitches[i++].len = end - start;
7361 p = multilib_exclusions;
7364 /* Ignore newlines. */
7371 /* Check the arguments. */
7378 fatal ("multilib exclusions '%s' is invalid",
7379 multilib_exclusions);
7389 while (*p != ' ' && *p != ';')
7392 goto invalid_exclusions;
7396 if (*this_arg != '!')
7404 ok = used_arg (this_arg, p - this_arg);
7419 p = multilib_select;
7422 /* Ignore newlines. */
7429 /* Get the initial path. */
7436 fatal ("multilib select '%s' is invalid",
7441 this_path_len = p - this_path;
7443 /* Check the arguments. */
7450 goto invalid_select;
7459 while (*p != ' ' && *p != ';')
7462 goto invalid_select;
7466 if (*this_arg != '!')
7474 /* If this is a default argument, we can just ignore it.
7475 This is true even if this_arg begins with '!'. Beginning
7476 with '!' does not mean that this argument is necessarily
7477 inappropriate for this library: it merely means that
7478 there is a more specific library which uses this
7479 argument. If this argument is a default, we need not
7480 consider that more specific library. */
7481 ok = used_arg (this_arg, p - this_arg);
7488 if (default_arg (this_arg, p - this_arg))
7497 if (this_path_len != 1
7498 || this_path[0] != '.')
7500 char *new_multilib_dir = XNEWVEC (char, this_path_len + 1);
7503 strncpy (new_multilib_dir, this_path, this_path_len);
7504 new_multilib_dir[this_path_len] = '\0';
7505 q = strchr (new_multilib_dir, ':');
7508 multilib_dir = new_multilib_dir;
7515 const char *q = this_path, *end = this_path + this_path_len;
7517 while (q < end && *q != ':')
7521 char *new_multilib_os_dir = XNEWVEC (char, end - q);
7522 memcpy (new_multilib_os_dir, q + 1, end - q - 1);
7523 new_multilib_os_dir[end - q - 1] = '\0';
7524 multilib_os_dir = new_multilib_os_dir;
7532 if (multilib_dir == NULL && multilib_os_dir != NULL
7533 && strcmp (multilib_os_dir, ".") == 0)
7535 free (CONST_CAST (char *, multilib_os_dir));
7536 multilib_os_dir = NULL;
7538 else if (multilib_dir != NULL && multilib_os_dir == NULL)
7539 multilib_os_dir = multilib_dir;
7542 /* Print out the multiple library subdirectory selection
7543 information. This prints out a series of lines. Each line looks
7544 like SUBDIRECTORY;@OPTION@OPTION, with as many options as is
7545 required. Only the desired options are printed out, the negative
7546 matches. The options are print without a leading dash. There are
7547 no spaces to make it easy to use the information in the shell.
7548 Each subdirectory is printed only once. This assumes the ordering
7549 generated by the genmultilib script. Also, we leave out ones that match
7553 print_multilib_info (void)
7555 const char *p = multilib_select;
7556 const char *last_path = 0, *this_path;
7558 unsigned int last_path_len = 0;
7563 /* Ignore newlines. */
7570 /* Get the initial path. */
7577 fatal ("multilib select '%s' is invalid", multilib_select);
7583 /* When --disable-multilib was used but target defines
7584 MULTILIB_OSDIRNAMES, entries starting with .: are there just
7585 to find multilib_os_dir, so skip them from output. */
7586 if (this_path[0] == '.' && this_path[1] == ':')
7589 /* Check for matches with the multilib_exclusions. We don't bother
7590 with the '!' in either list. If any of the exclusion rules match
7591 all of its options with the select rule, we skip it. */
7593 const char *e = multilib_exclusions;
7594 const char *this_arg;
7599 /* Ignore newlines. */
7606 /* Check the arguments. */
7615 fatal ("multilib exclusion '%s' is invalid",
7616 multilib_exclusions);
7627 while (*e != ' ' && *e != ';')
7630 goto invalid_exclusion;
7638 int len = e - this_arg;
7641 goto invalid_select;
7645 while (*q != ' ' && *q != ';')
7648 goto invalid_select;
7652 if (! strncmp (arg, this_arg,
7653 (len < q - arg) ? q - arg : len)
7654 || default_arg (this_arg, e - this_arg))
7684 /* If this is a duplicate, skip it. */
7685 skip = (last_path != 0
7686 && (unsigned int) (p - this_path) == last_path_len
7687 && ! strncmp (last_path, this_path, last_path_len));
7689 last_path = this_path;
7690 last_path_len = p - this_path;
7693 /* If this directory requires any default arguments, we can skip
7694 it. We will already have printed a directory identical to
7695 this one which does not require that default argument. */
7706 goto invalid_select;
7713 while (*q != ' ' && *q != ';')
7716 goto invalid_select;
7721 && default_arg (arg, q - arg))
7736 for (p1 = last_path; p1 < p && *p1 != ':'; p1++)
7747 goto invalid_select;
7755 use_arg = *p != '!';
7760 while (*p != ' ' && *p != ';')
7763 goto invalid_select;
7775 /* If there are extra options, print them now. */
7776 if (multilib_extra && *multilib_extra)
7778 int print_at = TRUE;
7781 for (q = multilib_extra; *q != '\0'; q++)
7802 /* getenv built-in spec function.
7804 Returns the value of the environment variable given by its first
7805 argument, concatenated with the second argument. If the
7806 environment variable is not defined, a fatal error is issued. */
7809 getenv_spec_function (int argc, const char **argv)
7819 value = getenv (argv[0]);
7821 fatal ("environment variable \"%s\" not defined", argv[0]);
7823 /* We have to escape every character of the environment variable so
7824 they are not interpreted as active spec characters. A
7825 particularly painful case is when we are reading a variable
7826 holding a windows path complete with \ separators. */
7827 len = strlen (value) * 2 + strlen (argv[1]) + 1;
7828 result = XNEWVAR (char, len);
7829 for (ptr = result; *value; ptr += 2)
7835 strcpy (ptr, argv[1]);
7840 /* if-exists built-in spec function.
7842 Checks to see if the file specified by the absolute pathname in
7843 ARGS exists. Returns that pathname if found.
7845 The usual use for this function is to check for a library file
7846 (whose name has been expanded with %s). */
7849 if_exists_spec_function (int argc, const char **argv)
7851 /* Must have only one argument. */
7852 if (argc == 1 && IS_ABSOLUTE_PATH (argv[0]) && ! access (argv[0], R_OK))
7858 /* if-exists-else built-in spec function.
7860 This is like if-exists, but takes an additional argument which
7861 is returned if the first argument does not exist. */
7864 if_exists_else_spec_function (int argc, const char **argv)
7866 /* Must have exactly two arguments. */
7870 if (IS_ABSOLUTE_PATH (argv[0]) && ! access (argv[0], R_OK))
7876 /* replace-outfile built-in spec function.
7878 This looks for the first argument in the outfiles array's name and
7879 replaces it with the second argument. */
7882 replace_outfile_spec_function (int argc, const char **argv)
7885 /* Must have exactly two arguments. */
7889 for (i = 0; i < n_infiles; i++)
7891 if (outfiles[i] && !strcmp (outfiles[i], argv[0]))
7892 outfiles[i] = xstrdup (argv[1]);
7897 /* Given two version numbers, compares the two numbers.
7898 A version number must match the regular expression
7899 ([1-9][0-9]*|0)(\.([1-9][0-9]*|0))*
7902 compare_version_strings (const char *v1, const char *v2)
7907 if (regcomp (&r, "^([1-9][0-9]*|0)(\\.([1-9][0-9]*|0))*$",
7908 REG_EXTENDED | REG_NOSUB) != 0)
7910 rresult = regexec (&r, v1, 0, NULL, 0);
7911 if (rresult == REG_NOMATCH)
7912 fatal ("invalid version number `%s'", v1);
7913 else if (rresult != 0)
7915 rresult = regexec (&r, v2, 0, NULL, 0);
7916 if (rresult == REG_NOMATCH)
7917 fatal ("invalid version number `%s'", v2);
7918 else if (rresult != 0)
7921 return strverscmp (v1, v2);
7925 /* version_compare built-in spec function.
7927 This takes an argument of the following form:
7929 <comparison-op> <arg1> [<arg2>] <switch> <result>
7931 and produces "result" if the comparison evaluates to true,
7932 and nothing if it doesn't.
7934 The supported <comparison-op> values are:
7936 >= true if switch is a later (or same) version than arg1
7938 < true if switch is an earlier version than arg1
7940 >< true if switch is arg1 or later, and earlier than arg2
7941 <> true if switch is earlier than arg1 or is arg2 or later
7943 If the switch is not present, the condition is false unless
7944 the first character of the <comparison-op> is '!'.
7947 %:version-compare(>= 10.3 mmacosx-version-min= -lmx)
7948 adds -lmx if -mmacosx-version-min=10.3.9 was passed. */
7951 version_compare_spec_function (int argc, const char **argv)
7955 const char *switch_value = NULL;
7960 fatal ("too few arguments to %%:version-compare");
7961 if (argv[0][0] == '\0')
7963 if ((argv[0][1] == '<' || argv[0][1] == '>') && argv[0][0] != '!')
7965 if (argc != nargs + 3)
7966 fatal ("too many arguments to %%:version-compare");
7968 switch_len = strlen (argv[nargs + 1]);
7969 for (i = 0; i < n_switches; i++)
7970 if (!strncmp (switches[i].part1, argv[nargs + 1], switch_len)
7971 && check_live_switch (i, switch_len))
7972 switch_value = switches[i].part1 + switch_len;
7974 if (switch_value == NULL)
7978 comp1 = compare_version_strings (switch_value, argv[1]);
7980 comp2 = compare_version_strings (switch_value, argv[2]);
7982 comp2 = -1; /* This value unused. */
7985 switch (argv[0][0] << 8 | argv[0][1])
7987 case '>' << 8 | '=':
7988 result = comp1 >= 0;
7990 case '!' << 8 | '<':
7991 result = comp1 >= 0 || switch_value == NULL;
7996 case '!' << 8 | '>':
7997 result = comp1 < 0 || switch_value == NULL;
7999 case '>' << 8 | '<':
8000 result = comp1 >= 0 && comp2 < 0;
8002 case '<' << 8 | '>':
8003 result = comp1 < 0 || comp2 >= 0;
8007 fatal ("unknown operator '%s' in %%:version-compare", argv[0]);
8012 return argv[nargs + 2];
8015 /* %:include builtin spec function. This differs from %include in that it
8016 can be nested inside a spec, and thus be conditionalized. It takes
8017 one argument, the filename, and looks for it in the startfile path.
8018 The result is always NULL, i.e. an empty expansion. */
8021 include_spec_function (int argc, const char **argv)
8028 file = find_a_file (&startfile_prefixes, argv[0], R_OK, 0);
8029 read_specs (file ? file : argv[0], FALSE);
8034 /* %:print-asm-header spec function. Print a banner to say that the
8035 following output is from the assembler. */
8038 print_asm_header_spec_function (int arg ATTRIBUTE_UNUSED,
8039 const char **argv ATTRIBUTE_UNUSED)
8041 printf (_("Assembler options\n=================\n\n"));
8042 printf (_("Use \"-Wa,OPTION\" to pass \"OPTION\" to the assembler.\n\n"));