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 Free Software Foundation,
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 2, 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 COPYING. If not, write to the Free
20 Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
23 This paragraph is here to try to keep Sun CC from dying.
24 The number of chars here seems crucial!!!! */
26 /* This program is the user interface to the C compiler and possibly to
27 other compilers. It is used because compilation is a complicated procedure
28 which involves running several programs and passing temporary files between
29 them, forwarding the users switches to those programs selectively,
30 and deleting the temporary files at the end.
32 CC recognizes how to compile each input file by suffixes in the file names.
33 Once it knows which kind of compilation to perform, the procedure for
34 compilation is specified by a string called a "spec". */
36 /* A Short Introduction to Adding a Command-Line Option.
38 Before adding a command-line option, consider if it is really
39 necessary. Each additional command-line option adds complexity and
40 is difficult to remove in subsequent versions.
42 In the following, consider adding the command-line argument
45 1. Each command-line option is specified in the specs file. The
46 notation is described below in the comment entitled "The Specs
49 2. In this file, add an entry to "option_map" equating the long
50 `--' argument version and any shorter, single letter version. Read
51 the comments in the declaration of "struct option_map" for an
52 explanation. Do not omit the first `-'.
54 3. Look in the "specs" file to determine which program or option
55 list should be given the argument, e.g., "cc1_options". Add the
56 appropriate syntax for the shorter option version to the
57 corresponding "const char *" entry in this file. Omit the first
58 `-' from the option. For example, use `-bar', rather than `--bar'.
60 4. If the argument takes an argument, e.g., `--baz argument1',
61 modify either DEFAULT_SWITCH_TAKES_ARG or
62 DEFAULT_WORD_SWITCH_TAKES_ARG in gcc.h. Omit the first `-'
65 5. Document the option in this file's display_help(). If the
66 option is passed to a subprogram, modify its corresponding
67 function, e.g., cppinit.c:print_help() or toplev.c:display_help(),
70 6. Compile and test. Make sure that your new specs file is being
71 read. For example, use a debugger to investigate the value of
72 "specs_file" in main(). */
76 #include "coretypes.h"
77 #include "multilib.h" /* before tm.h */
80 #if ! defined( SIGCHLD ) && defined( SIGCLD )
81 # define SIGCHLD SIGCLD
91 /* By default there is no special suffix for target executables. */
92 /* FIXME: when autoconf is fixed, remove the host check - dj */
93 #if defined(TARGET_EXECUTABLE_SUFFIX) && defined(HOST_EXECUTABLE_SUFFIX)
94 #define HAVE_TARGET_EXECUTABLE_SUFFIX
97 /* By default there is no special suffix for host executables. */
98 #ifdef HOST_EXECUTABLE_SUFFIX
99 #define HAVE_HOST_EXECUTABLE_SUFFIX
101 #define HOST_EXECUTABLE_SUFFIX ""
104 /* By default, the suffix for target object files is ".o". */
105 #ifdef TARGET_OBJECT_SUFFIX
106 #define HAVE_TARGET_OBJECT_SUFFIX
108 #define TARGET_OBJECT_SUFFIX ".o"
111 static const char dir_separator_str[] = { DIR_SEPARATOR, 0 };
113 /* Most every one is fine with LIBRARY_PATH. For some, it conflicts. */
114 #ifndef LIBRARY_PATH_ENV
115 #define LIBRARY_PATH_ENV "LIBRARY_PATH"
119 #define kill(p,s) raise(s)
122 /* If a stage of compilation returns an exit status >= 1,
123 compilation of that file ceases. */
125 #define MIN_FATAL_STATUS 1
127 /* Flag set by cppspec.c to 1. */
130 /* Flag saying to pass the greatest exit code returned by a sub-process
131 to the calling program. */
132 static int pass_exit_codes;
134 /* Definition of string containing the arguments given to configure. */
135 #include "configargs.h"
137 /* Flag saying to print the directories gcc will search through looking for
138 programs, libraries, etc. */
140 static int print_search_dirs;
142 /* Flag saying to print the full filename of this file
143 as found through our usual search mechanism. */
145 static const char *print_file_name = NULL;
147 /* As print_file_name, but search for executable file. */
149 static const char *print_prog_name = NULL;
151 /* Flag saying to print the relative path we'd use to
152 find libgcc.a given the current compiler flags. */
154 static int print_multi_directory;
156 /* Flag saying to print the relative path we'd use to
157 find OS libraries given the current compiler flags. */
159 static int print_multi_os_directory;
161 /* Flag saying to print the list of subdirectories and
162 compiler flags used to select them in a standard form. */
164 static int print_multi_lib;
166 /* Flag saying to print the command line options understood by gcc and its
169 static int print_help_list;
171 /* Flag indicating whether we should print the command and arguments */
173 static int verbose_flag;
175 /* Flag indicating whether we should ONLY print the command and
176 arguments (like verbose_flag) without executing the command.
177 Displayed arguments are quoted so that the generated command
178 line is suitable for execution. This is intended for use in
179 shell scripts to capture the driver-generated command line. */
180 static int verbose_only_flag;
182 /* Flag indicating to print target specific command line options. */
184 static int target_help_flag;
186 /* Flag indicating whether we should report subprocess execution times
187 (if this is supported by the system - see pexecute.c). */
189 static int report_times;
191 /* Nonzero means place this string before uses of /, so that include
192 and library files can be found in an alternate location. */
194 #ifdef TARGET_SYSTEM_ROOT
195 static const char *target_system_root = TARGET_SYSTEM_ROOT;
197 static const char *target_system_root = 0;
200 /* Nonzero means pass the updated target_system_root to the compiler. */
202 static int target_system_root_changed;
204 /* Nonzero means append this string to target_system_root. */
206 static const char *target_sysroot_suffix = 0;
208 /* Nonzero means append this string to target_system_root for headers. */
210 static const char *target_sysroot_hdrs_suffix = 0;
212 /* Nonzero means write "temp" files in source directory
213 and use the source file's name in them, and don't delete them. */
215 static int save_temps_flag;
217 /* Nonzero means pass multiple source files to the compiler at one time. */
219 static int combine_flag = 0;
221 /* Nonzero means use pipes to communicate between subprocesses.
222 Overridden by either of the above two flags. */
224 static int use_pipes;
226 /* The compiler version. */
228 static const char *compiler_version;
230 /* The target version specified with -V */
232 static const char *const spec_version = DEFAULT_TARGET_VERSION;
234 /* The target machine specified with -b. */
236 static const char *spec_machine = DEFAULT_TARGET_MACHINE;
238 /* Nonzero if cross-compiling.
239 When -b is used, the value comes from the `specs' file. */
242 static const char *cross_compile = "1";
244 static const char *cross_compile = "0";
247 #ifdef MODIFY_TARGET_NAME
249 /* Information on how to alter the target name based on a command-line
250 switch. The only case we support now is simply appending or deleting a
251 string to or from the end of the first part of the configuration name. */
253 static const struct modify_target
255 const char *const sw;
256 const enum add_del {ADD, DELETE} add_del;
257 const char *const str;
259 modify_target[] = MODIFY_TARGET_NAME;
262 /* The number of errors that have occurred; the link phase will not be
263 run if this is nonzero. */
264 static int error_count = 0;
266 /* Greatest exit code of sub-processes that has been encountered up to
268 static int greatest_status = 1;
270 /* This is the obstack which we use to allocate many strings. */
272 static struct obstack obstack;
274 /* This is the obstack to build an environment variable to pass to
275 collect2 that describes all of the relevant switches of what to
276 pass the compiler in building the list of pointers to constructors
279 static struct obstack collect_obstack;
281 /* Forward declaration for prototypes. */
285 static void init_spec (void);
286 static void store_arg (const char *, int, int);
287 static char *load_specs (const char *);
288 static void read_specs (const char *, int);
289 static void set_spec (const char *, const char *);
290 static struct compiler *lookup_compiler (const char *, size_t, const char *);
291 static char *build_search_list (const struct path_prefix *, const char *,
293 static void putenv_from_prefixes (const struct path_prefix *, const char *,
295 static int access_check (const char *, int);
296 static char *find_a_file (const struct path_prefix *, const char *, int, bool);
297 static void add_prefix (struct path_prefix *, const char *, const char *,
299 static void add_sysrooted_prefix (struct path_prefix *, const char *,
300 const char *, int, int, int);
301 static void translate_options (int *, const char *const **);
302 static char *skip_whitespace (char *);
303 static void delete_if_ordinary (const char *);
304 static void delete_temp_files (void);
305 static void delete_failure_queue (void);
306 static void clear_failure_queue (void);
307 static int check_live_switch (int, int);
308 static const char *handle_braces (const char *);
309 static inline bool input_suffix_matches (const char *, const char *);
310 static inline bool switch_matches (const char *, const char *, int);
311 static inline void mark_matching_switches (const char *, const char *, int);
312 static inline void process_marked_switches (void);
313 static const char *process_brace_body (const char *, const char *, const char *, int, int);
314 static const struct spec_function *lookup_spec_function (const char *);
315 static const char *eval_spec_function (const char *, const char *);
316 static const char *handle_spec_function (const char *);
317 static char *save_string (const char *, int);
318 static void set_collect_gcc_options (void);
319 static int do_spec_1 (const char *, int, const char *);
320 static int do_spec_2 (const char *);
321 static void do_option_spec (const char *, const char *);
322 static void do_self_spec (const char *);
323 static const char *find_file (const char *);
324 static int is_directory (const char *, bool);
325 static const char *validate_switches (const char *);
326 static void validate_all_switches (void);
327 static inline void validate_switches_from_spec (const char *);
328 static void give_switch (int, int);
329 static int used_arg (const char *, int);
330 static int default_arg (const char *, int);
331 static void set_multilib_dir (void);
332 static void print_multilib_info (void);
333 static void perror_with_name (const char *);
334 static void fatal_ice (const char *, ...) ATTRIBUTE_PRINTF_1 ATTRIBUTE_NORETURN;
335 static void notice (const char *, ...) ATTRIBUTE_PRINTF_1;
336 static void display_help (void);
337 static void add_preprocessor_option (const char *, int);
338 static void add_assembler_option (const char *, int);
339 static void add_linker_option (const char *, int);
340 static void process_command (int, const char **);
341 static int execute (void);
342 static void alloc_args (void);
343 static void clear_args (void);
344 static void fatal_error (int);
345 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
346 static void init_gcc_specs (struct obstack *, const char *, const char *,
349 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
350 static const char *convert_filename (const char *, int, int);
353 static const char *if_exists_spec_function (int, const char **);
354 static const char *if_exists_else_spec_function (int, const char **);
355 static const char *replace_outfile_spec_function (int, const char **);
356 static const char *version_compare_spec_function (int, const char **);
357 static const char *include_spec_function (int, const char **);
359 /* The Specs Language
361 Specs are strings containing lines, each of which (if not blank)
362 is made up of a program name, and arguments separated by spaces.
363 The program name must be exact and start from root, since no path
364 is searched and it is unreliable to depend on the current working directory.
365 Redirection of input or output is not supported; the subprograms must
366 accept filenames saying what files to read and write.
368 In addition, the specs can contain %-sequences to substitute variable text
369 or for conditional text. Here is a table of all defined %-sequences.
370 Note that spaces are not generated automatically around the results of
371 expanding these sequences; therefore, you can concatenate them together
372 or with constant text in a single argument.
374 %% substitute one % into the program name or argument.
375 %i substitute the name of the input file being processed.
376 %b substitute the basename of the input file being processed.
377 This is the substring up to (and not including) the last period
378 and not including the directory.
379 %B same as %b, but include the file suffix (text after the last period).
381 substitute a file name that has suffix SUFFIX and is chosen
382 once per compilation, and mark the argument a la %d. To reduce
383 exposure to denial-of-service attacks, the file name is now
384 chosen in a way that is hard to predict even when previously
385 chosen file names are known. For example, `%g.s ... %g.o ... %g.s'
386 might turn into `ccUVUUAU.s ccXYAXZ12.o ccUVUUAU.s'. SUFFIX matches
387 the regexp "[.0-9A-Za-z]*%O"; "%O" is treated exactly as if it
388 had been pre-processed. Previously, %g was simply substituted
389 with a file name chosen once per compilation, without regard
390 to any appended suffix (which was therefore treated just like
391 ordinary text), making such attacks more likely to succeed.
393 like %g, but if -pipe is in effect, expands simply to "-".
395 like %g, but if -pipe is in effect, expands to nothing. (We have both
396 %| and %m to accommodate differences between system assemblers; see
397 the AS_NEEDS_DASH_FOR_PIPED_INPUT target macro.)
399 like %g, but generates a new temporary file name even if %uSUFFIX
402 substitutes the last file name generated with %uSUFFIX, generating a
403 new one if there is no such last file name. In the absence of any
404 %uSUFFIX, this is just like %gSUFFIX, except they don't share
405 the same suffix "space", so `%g.s ... %U.s ... %g.s ... %U.s'
406 would involve the generation of two distinct file names, one
407 for each `%g.s' and another for each `%U.s'. Previously, %U was
408 simply substituted with a file name chosen for the previous %u,
409 without regard to any appended suffix.
411 substitutes the name of the HOST_BIT_BUCKET, if any, and if it is
412 writable, and if save-temps is off; otherwise, substitute the name
413 of a temporary file, just like %u. This temporary file is not
414 meant for communication between processes, but rather as a junk
417 substitutes .SUFFIX for the suffixes of a matched switch's args when
418 it is subsequently output with %*. SUFFIX is terminated by the next
420 %d marks the argument containing or following the %d as a
421 temporary file name, so that that file will be deleted if CC exits
422 successfully. Unlike %g, this contributes no text to the argument.
423 %w marks the argument containing or following the %w as the
424 "output file" of this compilation. This puts the argument
425 into the sequence of arguments that %o will substitute later.
426 %V indicates that this compilation produces no "output file".
428 like %{...} but mark last argument supplied within
429 as a file to be deleted on failure.
430 %o substitutes the names of all the output files, with spaces
431 automatically placed around them. You should write spaces
432 around the %o as well or the results are undefined.
433 %o is for use in the specs for running the linker.
434 Input files whose names have no recognized suffix are not compiled
435 at all, but they are included among the output files, so they will
437 %O substitutes the suffix for object files. Note that this is
438 handled specially when it immediately follows %g, %u, or %U
439 (with or without a suffix argument) because of the need for
440 those to form complete file names. The handling is such that
441 %O is treated exactly as if it had already been substituted,
442 except that %g, %u, and %U do not currently support additional
443 SUFFIX characters following %O as they would following, for
445 %I Substitute any of -iprefix (made from GCC_EXEC_PREFIX), -isysroot
446 (made from TARGET_SYSTEM_ROOT), -isystem (made from COMPILER_PATH
447 and -B options) and -imultilib as necessary.
448 %s current argument is the name of a library or startup file of some sort.
449 Search for that file in a standard list of directories
450 and substitute the full name found.
451 %eSTR Print STR as an error message. STR is terminated by a newline.
452 Use this when inconsistent options are detected.
453 %nSTR Print STR as a notice. STR is terminated by a newline.
454 %x{OPTION} Accumulate an option for %X.
455 %X Output the accumulated linker options specified by compilations.
456 %Y Output the accumulated assembler options specified by compilations.
457 %Z Output the accumulated preprocessor options specified by compilations.
458 %a process ASM_SPEC as a spec.
459 This allows config.h to specify part of the spec for running as.
460 %A process ASM_FINAL_SPEC as a spec. A capital A is actually
461 used here. This can be used to run a post-processor after the
462 assembler has done its job.
463 %D Dump out a -L option for each directory in startfile_prefixes.
464 If multilib_dir is set, extra entries are generated with it affixed.
465 %l process LINK_SPEC as a spec.
466 %L process LIB_SPEC as a spec.
467 %G process LIBGCC_SPEC as a spec.
468 %R Output the concatenation of target_system_root and
469 target_sysroot_suffix.
470 %S process STARTFILE_SPEC as a spec. A capital S is actually used here.
471 %E process ENDFILE_SPEC as a spec. A capital E is actually used here.
472 %C process CPP_SPEC as a spec.
473 %1 process CC1_SPEC as a spec.
474 %2 process CC1PLUS_SPEC as a spec.
475 %* substitute the variable part of a matched option. (See below.)
476 Note that each comma in the substituted string is replaced by
478 %<S remove all occurrences of -S from the command line.
479 Note - this command is position dependent. % commands in the
480 spec string before this one will see -S, % commands in the
481 spec string after this one will not.
482 %<S* remove all occurrences of all switches beginning with -S from the
485 Call the named function FUNCTION, passing it ARGS. ARGS is
486 first processed as a nested spec string, then split into an
487 argument vector in the usual fashion. The function returns
488 a string which is processed as if it had appeared literally
489 as part of the current spec.
490 %{S} substitutes the -S switch, if that switch was given to CC.
491 If that switch was not specified, this substitutes nothing.
492 Here S is a metasyntactic variable.
493 %{S*} substitutes all the switches specified to CC whose names start
494 with -S. This is used for -o, -I, etc; switches that take
495 arguments. CC considers `-o foo' as being one switch whose
496 name starts with `o'. %{o*} would substitute this text,
497 including the space; thus, two arguments would be generated.
498 %{S*&T*} likewise, but preserve order of S and T options (the order
499 of S and T in the spec is not significant). Can be any number
500 of ampersand-separated variables; for each the wild card is
501 optional. Useful for CPP as %{D*&U*&A*}.
503 %{S:X} substitutes X, if the -S switch was given to CC.
504 %{!S:X} substitutes X, if the -S switch was NOT given to CC.
505 %{S*:X} substitutes X if one or more switches whose names start
506 with -S was given to CC. Normally X is substituted only
507 once, no matter how many such switches appeared. However,
508 if %* appears somewhere in X, then X will be substituted
509 once for each matching switch, with the %* replaced by the
510 part of that switch that matched the '*'.
511 %{.S:X} substitutes X, if processing a file with suffix S.
512 %{!.S:X} substitutes X, if NOT processing a file with suffix S.
514 %{S|T:X} substitutes X if either -S or -T was given to CC. This may be
515 combined with !, ., and * as above binding stronger than the OR.
516 If %* appears in X, all of the alternatives must be starred, and
517 only the first matching alternative is substituted.
518 %{S:X; if S was given to CC, substitutes X;
519 T:Y; else if T was given to CC, substitutes Y;
520 :D} else substitutes D. There can be as many clauses as you need.
521 This may be combined with ., !, |, and * as above.
523 %(Spec) processes a specification defined in a specs file as *Spec:
524 %[Spec] as above, but put __ around -D arguments
526 The conditional text X in a %{S:X} or similar construct may contain
527 other nested % constructs or spaces, or even newlines. They are
528 processed as usual, as described above. Trailing white space in X is
529 ignored. White space may also appear anywhere on the left side of the
530 colon in these constructs, except between . or * and the corresponding
533 The -O, -f, -m, and -W switches are handled specifically in these
534 constructs. If another value of -O or the negated form of a -f, -m, or
535 -W switch is found later in the command line, the earlier switch
536 value is ignored, except with {S*} where S is just one letter; this
537 passes all matching options.
539 The character | at the beginning of the predicate text is used to indicate
540 that a command should be piped to the following command, but only if -pipe
543 Note that it is built into CC which switches take arguments and which
544 do not. You might think it would be useful to generalize this to
545 allow each compiler's spec to say which switches take arguments. But
546 this cannot be done in a consistent fashion. CC cannot even decide
547 which input files have been specified without knowing which switches
548 take arguments, and it must know which input files to compile in order
549 to tell which compilers to run.
551 CC also knows implicitly that arguments starting in `-l' are to be
552 treated as compiler output files, and passed to the linker in their
553 proper position among the other output files. */
555 /* Define the macros used for specs %a, %l, %L, %S, %C, %1. */
557 /* config.h can define ASM_SPEC to provide extra args to the assembler
558 or extra switch-translations. */
563 /* config.h can define ASM_FINAL_SPEC to run a post processor after
564 the assembler has run. */
565 #ifndef ASM_FINAL_SPEC
566 #define ASM_FINAL_SPEC ""
569 /* config.h can define CPP_SPEC to provide extra args to the C preprocessor
570 or extra switch-translations. */
575 /* config.h can define CC1_SPEC to provide extra args to cc1 and cc1plus
576 or extra switch-translations. */
581 /* config.h can define CC1PLUS_SPEC to provide extra args to cc1plus
582 or extra switch-translations. */
584 #define CC1PLUS_SPEC ""
587 /* config.h can define LINK_SPEC to provide extra args to the linker
588 or extra switch-translations. */
593 /* config.h can define LIB_SPEC to override the default libraries. */
595 #define LIB_SPEC "%{!shared:%{g*:-lg} %{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p}}"
600 /* XXX: valid only for GNU ld */
601 /* XXX: should exactly match hooks provided by libmudflap.a */
602 #define MFWRAP_SPEC " %{static: %{fmudflap|fmudflapth: \
603 --wrap=malloc --wrap=free --wrap=calloc --wrap=realloc\
604 --wrap=mmap --wrap=munmap --wrap=alloca\
605 } %{fmudflapth: --wrap=pthread_create\
606 }} %{fmudflap|fmudflapth: --wrap=main}"
609 #define MFLIB_SPEC "%{fmudflap|fmudflapth: -export-dynamic}"
612 /* config.h can define LIBGCC_SPEC to override how and when libgcc.a is
615 #if defined(REAL_LIBGCC_SPEC)
616 #define LIBGCC_SPEC REAL_LIBGCC_SPEC
617 #elif defined(LINK_LIBGCC_SPECIAL_1)
618 /* Have gcc do the search for libgcc.a. */
619 #define LIBGCC_SPEC "libgcc.a%s"
621 #define LIBGCC_SPEC "-lgcc"
625 /* config.h can define STARTFILE_SPEC to override the default crt0 files. */
626 #ifndef STARTFILE_SPEC
627 #define STARTFILE_SPEC \
628 "%{!shared:%{pg:gcrt0%O%s}%{!pg:%{p:mcrt0%O%s}%{!p:crt0%O%s}}}"
631 /* config.h can define SWITCHES_NEED_SPACES to control which options
632 require spaces between the option and the argument. */
633 #ifndef SWITCHES_NEED_SPACES
634 #define SWITCHES_NEED_SPACES ""
637 /* config.h can define ENDFILE_SPEC to override the default crtn files. */
639 #define ENDFILE_SPEC ""
643 #define LINKER_NAME "collect2"
646 /* Define ASM_DEBUG_SPEC to be a spec suitable for translating '-g'
648 #ifndef ASM_DEBUG_SPEC
649 # if defined(DBX_DEBUGGING_INFO) && defined(DWARF2_DEBUGGING_INFO) \
650 && defined(HAVE_AS_GDWARF2_DEBUG_FLAG) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
651 # define ASM_DEBUG_SPEC \
652 (PREFERRED_DEBUGGING_TYPE == DBX_DEBUG \
653 ? "%{gdwarf-2*:--gdwarf2}%{!gdwarf-2*:%{g*:--gstabs}}" \
654 : "%{gstabs*:--gstabs}%{!gstabs*:%{g*:--gdwarf2}}")
656 # if defined(DBX_DEBUGGING_INFO) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
657 # define ASM_DEBUG_SPEC "%{g*:--gstabs}"
659 # if defined(DWARF2_DEBUGGING_INFO) && defined(HAVE_AS_GDWARF2_DEBUG_FLAG)
660 # define ASM_DEBUG_SPEC "%{g*:--gdwarf2}"
664 #ifndef ASM_DEBUG_SPEC
665 # define ASM_DEBUG_SPEC ""
668 /* Here is the spec for running the linker, after compiling all files. */
670 /* This is overridable by the target in case they need to specify the
671 -lgcc and -lc order specially, yet not require them to override all
672 of LINK_COMMAND_SPEC. */
673 #ifndef LINK_GCC_C_SEQUENCE_SPEC
674 #define LINK_GCC_C_SEQUENCE_SPEC "%G %L %G"
677 #ifndef LINK_SSP_SPEC
678 #ifdef TARGET_LIBC_PROVIDES_SSP
679 #define LINK_SSP_SPEC "%{fstack-protector:}"
681 #define LINK_SSP_SPEC "%{fstack-protector|fstack-protector-all:-lssp_nonshared -lssp}"
685 #ifndef LINK_GCC_MATH_SPEC
686 #define LINK_GCC_MATH_SPEC ""
689 #ifndef LINK_PIE_SPEC
691 #define LINK_PIE_SPEC "%{pie:-pie} "
693 #define LINK_PIE_SPEC "%{pie:} "
697 /* -u* was put back because both BSD and SysV seem to support it. */
698 /* %{static:} simply prevents an error message if the target machine
699 doesn't handle -static. */
700 /* We want %{T*} after %{L*} and %D so that it can be used to specify linker
701 scripts which exist in user specified directories, or in standard
703 #ifndef LINK_COMMAND_SPEC
704 #define LINK_COMMAND_SPEC "\
705 %{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:\
706 %(linker) %l " LINK_PIE_SPEC "%X %{o*} %{A} %{d} %{e*} %{m} %{N} %{n} %{r}\
707 %{s} %{t} %{u*} %{x} %{z} %{Z} %{!A:%{!nostdlib:%{!nostartfiles:%S}}}\
708 %{static:} %{L*} %(mfwrap) %(link_libgcc) %o\
709 %{fopenmp:%:include(libgomp.spec)%(link_gomp)} %(mflib)\
710 %{fprofile-arcs|fprofile-generate|coverage:-lgcov}\
711 %{!nostdlib:%{!nodefaultlibs:%(link_gcc_math) %(link_ssp) %(link_gcc_c_sequence)}}\
712 %{!A:%{!nostdlib:%{!nostartfiles:%E}}} %{T*} }}}}}}"
715 #ifndef LINK_LIBGCC_SPEC
716 /* Generate -L options for startfile prefix list. */
717 # define LINK_LIBGCC_SPEC "%D"
720 #ifndef STARTFILE_PREFIX_SPEC
721 # define STARTFILE_PREFIX_SPEC ""
725 # define SYSROOT_SPEC "--sysroot=%R"
728 #ifndef SYSROOT_SUFFIX_SPEC
729 # define SYSROOT_SUFFIX_SPEC ""
732 #ifndef SYSROOT_HEADERS_SUFFIX_SPEC
733 # define SYSROOT_HEADERS_SUFFIX_SPEC ""
736 static const char *asm_debug;
737 static const char *cpp_spec = CPP_SPEC;
738 static const char *cc1_spec = CC1_SPEC;
739 static const char *cc1plus_spec = CC1PLUS_SPEC;
740 static const char *link_gcc_c_sequence_spec = LINK_GCC_C_SEQUENCE_SPEC;
741 static const char *link_ssp_spec = LINK_SSP_SPEC;
742 static const char *link_gcc_math_spec = LINK_GCC_MATH_SPEC;
743 static const char *asm_spec = ASM_SPEC;
744 static const char *asm_final_spec = ASM_FINAL_SPEC;
745 static const char *link_spec = LINK_SPEC;
746 static const char *lib_spec = LIB_SPEC;
747 static const char *mfwrap_spec = MFWRAP_SPEC;
748 static const char *mflib_spec = MFLIB_SPEC;
749 static const char *link_gomp_spec = "";
750 static const char *libgcc_spec = LIBGCC_SPEC;
751 static const char *endfile_spec = ENDFILE_SPEC;
752 static const char *startfile_spec = STARTFILE_SPEC;
753 static const char *switches_need_spaces = SWITCHES_NEED_SPACES;
754 static const char *linker_name_spec = LINKER_NAME;
755 static const char *link_command_spec = LINK_COMMAND_SPEC;
756 static const char *link_libgcc_spec = LINK_LIBGCC_SPEC;
757 static const char *startfile_prefix_spec = STARTFILE_PREFIX_SPEC;
758 static const char *sysroot_spec = SYSROOT_SPEC;
759 static const char *sysroot_suffix_spec = SYSROOT_SUFFIX_SPEC;
760 static const char *sysroot_hdrs_suffix_spec = SYSROOT_HEADERS_SUFFIX_SPEC;
762 /* Standard options to cpp, cc1, and as, to reduce duplication in specs.
763 There should be no need to override these in target dependent files,
764 but we need to copy them to the specs file so that newer versions
765 of the GCC driver can correctly drive older tool chains with the
766 appropriate -B options. */
768 /* When cpplib handles traditional preprocessing, get rid of this, and
769 call cc1 (or cc1obj in objc/lang-specs.h) from the main specs so
770 that we default the front end language better. */
771 static const char *trad_capable_cpp =
772 "cc1 -E %{traditional|ftraditional|traditional-cpp:-traditional-cpp}";
774 /* We don't wrap .d files in %W{} since a missing .d file, and
775 therefore no dependency entry, confuses make into thinking a .o
776 file that happens to exist is up-to-date. */
777 static const char *cpp_unique_options =
778 "%{C|CC:%{!E:%eGCC does not support -C or -CC without -E}}\
779 %{!Q:-quiet} %{nostdinc*} %{C} %{CC} %{v} %{I*&F*} %{P} %I\
780 %{MD:-MD %{!o:%b.d}%{o*:%.d%*}}\
781 %{MMD:-MMD %{!o:%b.d}%{o*:%.d%*}}\
782 %{M} %{MM} %{MF*} %{MG} %{MP} %{MQ*} %{MT*}\
783 %{!E:%{!M:%{!MM:%{MD|MMD:%{o*:-MQ %*}}}}}\
784 %{remap} %{g3:-dD} %{H} %C %{D*&U*&A*} %{i*} %Z %i\
785 %{fmudflap:-D_MUDFLAP -include mf-runtime.h}\
786 %{fmudflapth:-D_MUDFLAP -D_MUDFLAPTH -include mf-runtime.h}\
789 /* This contains cpp options which are common with cc1_options and are passed
790 only when preprocessing only to avoid duplication. We pass the cc1 spec
791 options to the preprocessor so that it the cc1 spec may manipulate
792 options used to set target flags. Those special target flags settings may
793 in turn cause preprocessor symbols to be defined specially. */
794 static const char *cpp_options =
795 "%(cpp_unique_options) %1 %{m*} %{std*&ansi&trigraphs} %{W*&pedantic*} %{w}\
796 %{f*} %{g*:%{!g0:%{!fno-working-directory:-fworking-directory}}} %{O*}\
797 %{undef} %{save-temps:-fpch-preprocess}";
799 /* This contains cpp options which are not passed when the preprocessor
800 output will be used by another program. */
801 static const char *cpp_debug_options = "%{d*}";
803 /* NB: This is shared amongst all front-ends. */
804 static const char *cc1_options =
805 "%{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\
806 %1 %{!Q:-quiet} -dumpbase %B %{d*} %{m*} %{a*}\
807 %{c|S:%{o*:-auxbase-strip %*}%{!o*:-auxbase %b}}%{!c:%{!S:-auxbase %b}}\
808 %{g*} %{O*} %{W*&pedantic*} %{w} %{std*&ansi&trigraphs}\
809 %{v:-version} %{pg:-p} %{p} %{f*} %{undef}\
810 %{Qn:-fno-ident} %{--help:--help}\
811 %{--target-help:--target-help}\
812 %{!fsyntax-only:%{S:%W{o*}%{!o*:-o %b.s}}}\
813 %{fsyntax-only:-o %j} %{-param*}\
814 %{fmudflap|fmudflapth:-fno-builtin -fno-merge-constants}\
815 %{coverage:-fprofile-arcs -ftest-coverage}";
817 static const char *asm_options =
818 "%a %Y %{c:%W{o*}%{!o*:-o %w%b%O}}%{!c:-o %d%w%u%O}";
820 static const char *invoke_as =
821 #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT
822 "%{!S:-o %|.s |\n as %(asm_options) %|.s %A }";
824 "%{!S:-o %|.s |\n as %(asm_options) %m.s %A }";
827 /* Some compilers have limits on line lengths, and the multilib_select
828 and/or multilib_matches strings can be very long, so we build them at
830 static struct obstack multilib_obstack;
831 static const char *multilib_select;
832 static const char *multilib_matches;
833 static const char *multilib_defaults;
834 static const char *multilib_exclusions;
836 /* Check whether a particular argument is a default argument. */
838 #ifndef MULTILIB_DEFAULTS
839 #define MULTILIB_DEFAULTS { "" }
842 static const char *const multilib_defaults_raw[] = MULTILIB_DEFAULTS;
844 #ifndef DRIVER_SELF_SPECS
845 #define DRIVER_SELF_SPECS ""
848 /* Adding -fopenmp should imply pthreads. This is particularly important
849 for targets that use different start files and suchlike. */
850 #ifndef GOMP_SELF_SPECS
851 #define GOMP_SELF_SPECS "%{fopenmp: -pthread}"
854 static const char *const driver_self_specs[] = {
855 DRIVER_SELF_SPECS, GOMP_SELF_SPECS
858 #ifndef OPTION_DEFAULT_SPECS
859 #define OPTION_DEFAULT_SPECS { "", "" }
868 static const struct default_spec
869 option_default_specs[] = { OPTION_DEFAULT_SPECS };
873 struct user_specs *next;
874 const char *filename;
877 static struct user_specs *user_specs_head, *user_specs_tail;
879 #ifndef SWITCH_TAKES_ARG
880 #define SWITCH_TAKES_ARG(CHAR) DEFAULT_SWITCH_TAKES_ARG(CHAR)
883 #ifndef WORD_SWITCH_TAKES_ARG
884 #define WORD_SWITCH_TAKES_ARG(STR) DEFAULT_WORD_SWITCH_TAKES_ARG (STR)
887 #ifdef HAVE_TARGET_EXECUTABLE_SUFFIX
888 /* This defines which switches stop a full compilation. */
889 #define DEFAULT_SWITCH_CURTAILS_COMPILATION(CHAR) \
890 ((CHAR) == 'c' || (CHAR) == 'S')
892 #ifndef SWITCH_CURTAILS_COMPILATION
893 #define SWITCH_CURTAILS_COMPILATION(CHAR) \
894 DEFAULT_SWITCH_CURTAILS_COMPILATION(CHAR)
898 /* Record the mapping from file suffixes for compilation specs. */
902 const char *suffix; /* Use this compiler for input files
903 whose names end in this suffix. */
905 const char *spec; /* To use this compiler, run this spec. */
907 const char *cpp_spec; /* If non-NULL, substitute this spec
908 for `%C', rather than the usual
910 const int combinable; /* If nonzero, compiler can deal with
911 multiple source files at once (IMA). */
912 const int needs_preprocessing; /* If nonzero, source files need to
913 be run through a preprocessor. */
916 /* Pointer to a vector of `struct compiler' that gives the spec for
917 compiling a file, based on its suffix.
918 A file that does not end in any of these suffixes will be passed
919 unchanged to the loader and nothing else will be done to it.
921 An entry containing two 0s is used to terminate the vector.
923 If multiple entries match a file, the last matching one is used. */
925 static struct compiler *compilers;
927 /* Number of entries in `compilers', not counting the null terminator. */
929 static int n_compilers;
931 /* The default list of file name suffixes and their compilation specs. */
933 static const struct compiler default_compilers[] =
935 /* Add lists of suffixes of known languages here. If those languages
936 were not present when we built the driver, we will hit these copies
937 and be given a more meaningful error than "file not used since
938 linking is not done". */
939 {".m", "#Objective-C", 0, 0, 0}, {".mi", "#Objective-C", 0, 0, 0},
940 {".mm", "#Objective-C++", 0, 0, 0}, {".M", "#Objective-C++", 0, 0, 0},
941 {".mii", "#Objective-C++", 0, 0, 0},
942 {".cc", "#C++", 0, 0, 0}, {".cxx", "#C++", 0, 0, 0},
943 {".cpp", "#C++", 0, 0, 0}, {".cp", "#C++", 0, 0, 0},
944 {".c++", "#C++", 0, 0, 0}, {".C", "#C++", 0, 0, 0},
945 {".CPP", "#C++", 0, 0, 0}, {".ii", "#C++", 0, 0, 0},
946 {".ads", "#Ada", 0, 0, 0}, {".adb", "#Ada", 0, 0, 0},
947 {".f", "#Fortran", 0, 0, 0}, {".for", "#Fortran", 0, 0, 0},
948 {".fpp", "#Fortran", 0, 0, 0}, {".F", "#Fortran", 0, 0, 0},
949 {".FOR", "#Fortran", 0, 0, 0}, {".FPP", "#Fortran", 0, 0, 0},
950 {".f90", "#Fortran", 0, 0, 0}, {".f95", "#Fortran", 0, 0, 0},
951 {".F90", "#Fortran", 0, 0, 0}, {".F95", "#Fortran", 0, 0, 0},
952 {".r", "#Ratfor", 0, 0, 0},
953 {".p", "#Pascal", 0, 0, 0}, {".pas", "#Pascal", 0, 0, 0},
954 {".java", "#Java", 0, 0, 0}, {".class", "#Java", 0, 0, 0},
955 {".zip", "#Java", 0, 0, 0}, {".jar", "#Java", 0, 0, 0},
956 /* Next come the entries for C. */
957 {".c", "@c", 0, 1, 1},
959 /* cc1 has an integrated ISO C preprocessor. We should invoke the
960 external preprocessor if -save-temps is given. */
961 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\
963 %{traditional|ftraditional:\
964 %eGNU C no longer supports -traditional without -E}\
966 %{save-temps|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
967 %(cpp_options) -o %{save-temps:%b.i} %{!save-temps:%g.i} \n\
968 cc1 -fpreprocessed %{save-temps:%b.i} %{!save-temps:%g.i} \
970 %{!save-temps:%{!traditional-cpp:%{!no-integrated-cpp:\
971 cc1 %(cpp_unique_options) %(cc1_options)}}}\
972 %{!fsyntax-only:%(invoke_as)}} \
974 %{save-temps|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
975 %(cpp_options) -o %{save-temps:%b.i} %{!save-temps:%g.i}}\
976 %{!save-temps:%{!traditional-cpp:%{!no-integrated-cpp:\
977 cc1 %(cpp_unique_options) %(cc1_options)}}\
978 %{!fsyntax-only:%(invoke_as)}}}}}}", 0, 1, 1},
980 "%{!E:%e-E or -x required when input is from standard input}\
981 %(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)", 0, 0, 0},
982 {".h", "@c-header", 0, 0, 0},
984 /* cc1 has an integrated ISO C preprocessor. We should invoke the
985 external preprocessor if -save-temps is given. */
986 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\
988 %{save-temps|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
989 %(cpp_options) -o %{save-temps:%b.i} %{!save-temps:%g.i} \n\
990 cc1 -fpreprocessed %{save-temps:%b.i} %{!save-temps:%g.i} \
992 -o %g.s %{!o*:--output-pch=%i.gch}\
993 %W{o*:--output-pch=%*}%V}\
994 %{!save-temps:%{!traditional-cpp:%{!no-integrated-cpp:\
995 cc1 %(cpp_unique_options) %(cc1_options)\
996 -o %g.s %{!o*:--output-pch=%i.gch}\
997 %W{o*:--output-pch=%*}%V}}}}}}", 0, 0, 0},
998 {".i", "@cpp-output", 0, 1, 0},
1000 "%{!M:%{!MM:%{!E:cc1 -fpreprocessed %i %(cc1_options) %{!fsyntax-only:%(invoke_as)}}}}", 0, 1, 0},
1001 {".s", "@assembler", 0, 1, 0},
1003 "%{!M:%{!MM:%{!E:%{!S:as %(asm_debug) %(asm_options) %i %A }}}}", 0, 1, 0},
1004 {".S", "@assembler-with-cpp", 0, 1, 0},
1005 {"@assembler-with-cpp",
1006 #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT
1007 "%(trad_capable_cpp) -lang-asm %(cpp_options)\
1008 %{E|M|MM:%(cpp_debug_options)}\
1009 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\
1010 as %(asm_debug) %(asm_options) %|.s %A }}}}"
1012 "%(trad_capable_cpp) -lang-asm %(cpp_options)\
1013 %{E|M|MM:%(cpp_debug_options)}\
1014 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\
1015 as %(asm_debug) %(asm_options) %m.s %A }}}}"
1020 /* Mark end of table. */
1024 /* Number of elements in default_compilers, not counting the terminator. */
1026 static const int n_default_compilers = ARRAY_SIZE (default_compilers) - 1;
1028 /* A vector of options to give to the linker.
1029 These options are accumulated by %x,
1030 and substituted into the linker command with %X. */
1031 static int n_linker_options;
1032 static char **linker_options;
1034 /* A vector of options to give to the assembler.
1035 These options are accumulated by -Wa,
1036 and substituted into the assembler command with %Y. */
1037 static int n_assembler_options;
1038 static char **assembler_options;
1040 /* A vector of options to give to the preprocessor.
1041 These options are accumulated by -Wp,
1042 and substituted into the preprocessor command with %Z. */
1043 static int n_preprocessor_options;
1044 static char **preprocessor_options;
1046 /* Define how to map long options into short ones. */
1048 /* This structure describes one mapping. */
1051 /* The long option's name. */
1052 const char *const name;
1053 /* The equivalent short option. */
1054 const char *const equivalent;
1055 /* Argument info. A string of flag chars; NULL equals no options.
1056 a => argument required.
1057 o => argument optional.
1058 j => join argument to equivalent, making one word.
1059 * => require other text after NAME as an argument. */
1060 const char *const arg_info;
1063 /* This is the table of mappings. Mappings are tried sequentially
1064 for each option encountered; the first one that matches, wins. */
1066 static const struct option_map option_map[] =
1068 {"--all-warnings", "-Wall", 0},
1069 {"--ansi", "-ansi", 0},
1070 {"--assemble", "-S", 0},
1071 {"--assert", "-A", "a"},
1072 {"--classpath", "-fclasspath=", "aj"},
1073 {"--bootclasspath", "-fbootclasspath=", "aj"},
1074 {"--CLASSPATH", "-fclasspath=", "aj"},
1075 {"--combine", "-combine", 0},
1076 {"--comments", "-C", 0},
1077 {"--comments-in-macros", "-CC", 0},
1078 {"--compile", "-c", 0},
1079 {"--debug", "-g", "oj"},
1080 {"--define-macro", "-D", "aj"},
1081 {"--dependencies", "-M", 0},
1082 {"--dump", "-d", "a"},
1083 {"--dumpbase", "-dumpbase", "a"},
1084 {"--encoding", "-fencoding=", "aj"},
1085 {"--entry", "-e", 0},
1086 {"--extra-warnings", "-W", 0},
1087 {"--extdirs", "-fextdirs=", "aj"},
1088 {"--for-assembler", "-Wa", "a"},
1089 {"--for-linker", "-Xlinker", "a"},
1090 {"--force-link", "-u", "a"},
1091 {"--coverage", "-coverage", 0},
1092 {"--imacros", "-imacros", "a"},
1093 {"--include", "-include", "a"},
1094 {"--include-barrier", "-I-", 0},
1095 {"--include-directory", "-I", "aj"},
1096 {"--include-directory-after", "-idirafter", "a"},
1097 {"--include-prefix", "-iprefix", "a"},
1098 {"--include-with-prefix", "-iwithprefix", "a"},
1099 {"--include-with-prefix-before", "-iwithprefixbefore", "a"},
1100 {"--include-with-prefix-after", "-iwithprefix", "a"},
1101 {"--language", "-x", "a"},
1102 {"--library-directory", "-L", "a"},
1103 {"--machine", "-m", "aj"},
1104 {"--machine-", "-m", "*j"},
1105 {"--no-integrated-cpp", "-no-integrated-cpp", 0},
1106 {"--no-line-commands", "-P", 0},
1107 {"--no-precompiled-includes", "-noprecomp", 0},
1108 {"--no-standard-includes", "-nostdinc", 0},
1109 {"--no-standard-libraries", "-nostdlib", 0},
1110 {"--no-warnings", "-w", 0},
1111 {"--optimize", "-O", "oj"},
1112 {"--output", "-o", "a"},
1113 {"--output-class-directory", "-foutput-class-dir=", "ja"},
1114 {"--param", "--param", "a"},
1115 {"--pass-exit-codes", "-pass-exit-codes", 0},
1116 {"--pedantic", "-pedantic", 0},
1117 {"--pedantic-errors", "-pedantic-errors", 0},
1118 {"--pie", "-pie", 0},
1119 {"--pipe", "-pipe", 0},
1120 {"--prefix", "-B", "a"},
1121 {"--preprocess", "-E", 0},
1122 {"--print-search-dirs", "-print-search-dirs", 0},
1123 {"--print-file-name", "-print-file-name=", "aj"},
1124 {"--print-libgcc-file-name", "-print-libgcc-file-name", 0},
1125 {"--print-missing-file-dependencies", "-MG", 0},
1126 {"--print-multi-lib", "-print-multi-lib", 0},
1127 {"--print-multi-directory", "-print-multi-directory", 0},
1128 {"--print-multi-os-directory", "-print-multi-os-directory", 0},
1129 {"--print-prog-name", "-print-prog-name=", "aj"},
1130 {"--profile", "-p", 0},
1131 {"--profile-blocks", "-a", 0},
1132 {"--quiet", "-q", 0},
1133 {"--resource", "-fcompile-resource=", "aj"},
1134 {"--save-temps", "-save-temps", 0},
1135 {"--shared", "-shared", 0},
1136 {"--silent", "-q", 0},
1137 {"--specs", "-specs=", "aj"},
1138 {"--static", "-static", 0},
1139 {"--std", "-std=", "aj"},
1140 {"--symbolic", "-symbolic", 0},
1141 {"--sysroot", "--sysroot=", "aj"},
1142 {"--time", "-time", 0},
1143 {"--trace-includes", "-H", 0},
1144 {"--traditional", "-traditional", 0},
1145 {"--traditional-cpp", "-traditional-cpp", 0},
1146 {"--trigraphs", "-trigraphs", 0},
1147 {"--undefine-macro", "-U", "aj"},
1148 {"--user-dependencies", "-MM", 0},
1149 {"--verbose", "-v", 0},
1150 {"--warn-", "-W", "*j"},
1151 {"--write-dependencies", "-MD", 0},
1152 {"--write-user-dependencies", "-MMD", 0},
1157 #ifdef TARGET_OPTION_TRANSLATE_TABLE
1158 static const struct {
1159 const char *const option_found;
1160 const char *const replacements;
1161 } target_option_translations[] =
1163 TARGET_OPTION_TRANSLATE_TABLE,
1168 /* Translate the options described by *ARGCP and *ARGVP.
1169 Make a new vector and store it back in *ARGVP,
1170 and store its length in *ARGVC. */
1173 translate_options (int *argcp, const char *const **argvp)
1177 const char *const *argv = *argvp;
1178 int newvsize = (argc + 2) * 2 * sizeof (const char *);
1179 const char **newv = xmalloc (newvsize);
1183 newv[newindex++] = argv[i++];
1187 #ifdef TARGET_OPTION_TRANSLATE_TABLE
1191 target_option_translations[tott_idx].option_found;
1194 if (strcmp (target_option_translations[tott_idx].option_found,
1201 for (sp = target_option_translations[tott_idx].replacements;
1208 newvsize += spaces * sizeof (const char *);
1209 newv = xrealloc (newv, newvsize);
1211 sp = target_option_translations[tott_idx].replacements;
1220 newv[newindex++] = np;
1221 while (*np != ' ' && *np)
1232 if (target_option_translations[tott_idx].option_found)
1236 /* Translate -- options. */
1237 if (argv[i][0] == '-' && argv[i][1] == '-')
1240 /* Find a mapping that applies to this option. */
1241 for (j = 0; j < ARRAY_SIZE (option_map); j++)
1243 size_t optlen = strlen (option_map[j].name);
1244 size_t arglen = strlen (argv[i]);
1245 size_t complen = arglen > optlen ? optlen : arglen;
1246 const char *arginfo = option_map[j].arg_info;
1251 if (!strncmp (argv[i], option_map[j].name, complen))
1253 const char *arg = 0;
1255 if (arglen < optlen)
1258 for (k = j + 1; k < ARRAY_SIZE (option_map); k++)
1259 if (strlen (option_map[k].name) >= arglen
1260 && !strncmp (argv[i], option_map[k].name, arglen))
1262 error ("ambiguous abbreviation %s", argv[i]);
1266 if (k != ARRAY_SIZE (option_map))
1270 if (arglen > optlen)
1272 /* If the option has an argument, accept that. */
1273 if (argv[i][optlen] == '=')
1274 arg = argv[i] + optlen + 1;
1276 /* If this mapping requires extra text at end of name,
1277 accept that as "argument". */
1278 else if (strchr (arginfo, '*') != 0)
1279 arg = argv[i] + optlen;
1281 /* Otherwise, extra text at end means mismatch.
1282 Try other mappings. */
1287 else if (strchr (arginfo, '*') != 0)
1289 error ("incomplete '%s' option", option_map[j].name);
1293 /* Handle arguments. */
1294 if (strchr (arginfo, 'a') != 0)
1300 error ("missing argument to '%s' option",
1301 option_map[j].name);
1308 else if (strchr (arginfo, '*') != 0)
1310 else if (strchr (arginfo, 'o') == 0)
1313 error ("extraneous argument to '%s' option",
1314 option_map[j].name);
1318 /* Store the translation as one argv elt or as two. */
1319 if (arg != 0 && strchr (arginfo, 'j') != 0)
1320 newv[newindex++] = concat (option_map[j].equivalent, arg,
1324 newv[newindex++] = option_map[j].equivalent;
1325 newv[newindex++] = arg;
1328 newv[newindex++] = option_map[j].equivalent;
1336 /* Handle old-fashioned options--just copy them through,
1337 with their arguments. */
1338 else if (argv[i][0] == '-')
1340 const char *p = argv[i] + 1;
1344 if (SWITCH_TAKES_ARG (c) > (p[1] != 0))
1345 nskip += SWITCH_TAKES_ARG (c) - (p[1] != 0);
1346 else if (WORD_SWITCH_TAKES_ARG (p))
1347 nskip += WORD_SWITCH_TAKES_ARG (p);
1348 else if ((c == 'B' || c == 'b' || c == 'x')
1351 else if (! strcmp (p, "Xlinker"))
1353 else if (! strcmp (p, "Xpreprocessor"))
1355 else if (! strcmp (p, "Xassembler"))
1358 /* Watch out for an option at the end of the command line that
1359 is missing arguments, and avoid skipping past the end of the
1361 if (nskip + i > argc)
1366 newv[newindex++] = argv[i++];
1371 /* Ordinary operands, or +e options. */
1372 newv[newindex++] = argv[i++];
1382 skip_whitespace (char *p)
1386 /* A fully-blank line is a delimiter in the SPEC file and shouldn't
1387 be considered whitespace. */
1388 if (p[0] == '\n' && p[1] == '\n' && p[2] == '\n')
1390 else if (*p == '\n' || *p == ' ' || *p == '\t')
1404 /* Structures to keep track of prefixes to try when looking for files. */
1408 const char *prefix; /* String to prepend to the path. */
1409 struct prefix_list *next; /* Next in linked list. */
1410 int require_machine_suffix; /* Don't use without machine_suffix. */
1411 /* 2 means try both machine_suffix and just_machine_suffix. */
1412 int priority; /* Sort key - priority within list. */
1413 int os_multilib; /* 1 if OS multilib scheme should be used,
1414 0 for GCC multilib scheme. */
1419 struct prefix_list *plist; /* List of prefixes to try */
1420 int max_len; /* Max length of a prefix in PLIST */
1421 const char *name; /* Name of this list (used in config stuff) */
1424 /* List of prefixes to try when looking for executables. */
1426 static struct path_prefix exec_prefixes = { 0, 0, "exec" };
1428 /* List of prefixes to try when looking for startup (crt0) files. */
1430 static struct path_prefix startfile_prefixes = { 0, 0, "startfile" };
1432 /* List of prefixes to try when looking for include files. */
1434 static struct path_prefix include_prefixes = { 0, 0, "include" };
1436 /* Suffix to attach to directories searched for commands.
1437 This looks like `MACHINE/VERSION/'. */
1439 static const char *machine_suffix = 0;
1441 /* Suffix to attach to directories searched for commands.
1442 This is just `MACHINE/'. */
1444 static const char *just_machine_suffix = 0;
1446 /* Adjusted value of GCC_EXEC_PREFIX envvar. */
1448 static const char *gcc_exec_prefix;
1450 /* Adjusted value of standard_libexec_prefix. */
1452 static const char *gcc_libexec_prefix;
1454 /* Default prefixes to attach to command names. */
1456 #ifndef STANDARD_STARTFILE_PREFIX_1
1457 #define STANDARD_STARTFILE_PREFIX_1 "/lib/"
1459 #ifndef STANDARD_STARTFILE_PREFIX_2
1460 #define STANDARD_STARTFILE_PREFIX_2 "/usr/lib/"
1463 #ifdef CROSS_COMPILE /* Don't use these prefixes for a cross compiler. */
1464 #undef MD_EXEC_PREFIX
1465 #undef MD_STARTFILE_PREFIX
1466 #undef MD_STARTFILE_PREFIX_1
1469 /* If no prefixes defined, use the null string, which will disable them. */
1470 #ifndef MD_EXEC_PREFIX
1471 #define MD_EXEC_PREFIX ""
1473 #ifndef MD_STARTFILE_PREFIX
1474 #define MD_STARTFILE_PREFIX ""
1476 #ifndef MD_STARTFILE_PREFIX_1
1477 #define MD_STARTFILE_PREFIX_1 ""
1480 static const char *const standard_exec_prefix = STANDARD_EXEC_PREFIX;
1481 static const char *const standard_exec_prefix_1 = "/usr/libexec/gcc/";
1482 static const char *const standard_exec_prefix_2 = "/usr/lib/gcc/";
1483 static const char *md_exec_prefix = MD_EXEC_PREFIX;
1485 static const char *md_startfile_prefix = MD_STARTFILE_PREFIX;
1486 static const char *md_startfile_prefix_1 = MD_STARTFILE_PREFIX_1;
1487 static const char *const standard_startfile_prefix = STANDARD_STARTFILE_PREFIX;
1488 static const char *const standard_startfile_prefix_1
1489 = STANDARD_STARTFILE_PREFIX_1;
1490 static const char *const standard_startfile_prefix_2
1491 = STANDARD_STARTFILE_PREFIX_2;
1493 static const char *const tooldir_base_prefix = TOOLDIR_BASE_PREFIX;
1494 static const char *tooldir_prefix;
1496 static const char *const standard_bindir_prefix = STANDARD_BINDIR_PREFIX;
1498 static const char *standard_libexec_prefix = STANDARD_LIBEXEC_PREFIX;
1500 /* Subdirectory to use for locating libraries. Set by
1501 set_multilib_dir based on the compilation options. */
1503 static const char *multilib_dir;
1505 /* Subdirectory to use for locating libraries in OS conventions. Set by
1506 set_multilib_dir based on the compilation options. */
1508 static const char *multilib_os_dir;
1510 /* Structure to keep track of the specs that have been defined so far.
1511 These are accessed using %(specname) or %[specname] in a compiler
1516 /* The following 2 fields must be first */
1517 /* to allow EXTRA_SPECS to be initialized */
1518 const char *name; /* name of the spec. */
1519 const char *ptr; /* available ptr if no static pointer */
1521 /* The following fields are not initialized */
1522 /* by EXTRA_SPECS */
1523 const char **ptr_spec; /* pointer to the spec itself. */
1524 struct spec_list *next; /* Next spec in linked list. */
1525 int name_len; /* length of the name */
1526 int alloc_p; /* whether string was allocated */
1529 #define INIT_STATIC_SPEC(NAME,PTR) \
1530 { NAME, NULL, PTR, (struct spec_list *) 0, sizeof (NAME) - 1, 0 }
1532 /* List of statically defined specs. */
1533 static struct spec_list static_specs[] =
1535 INIT_STATIC_SPEC ("asm", &asm_spec),
1536 INIT_STATIC_SPEC ("asm_debug", &asm_debug),
1537 INIT_STATIC_SPEC ("asm_final", &asm_final_spec),
1538 INIT_STATIC_SPEC ("asm_options", &asm_options),
1539 INIT_STATIC_SPEC ("invoke_as", &invoke_as),
1540 INIT_STATIC_SPEC ("cpp", &cpp_spec),
1541 INIT_STATIC_SPEC ("cpp_options", &cpp_options),
1542 INIT_STATIC_SPEC ("cpp_debug_options", &cpp_debug_options),
1543 INIT_STATIC_SPEC ("cpp_unique_options", &cpp_unique_options),
1544 INIT_STATIC_SPEC ("trad_capable_cpp", &trad_capable_cpp),
1545 INIT_STATIC_SPEC ("cc1", &cc1_spec),
1546 INIT_STATIC_SPEC ("cc1_options", &cc1_options),
1547 INIT_STATIC_SPEC ("cc1plus", &cc1plus_spec),
1548 INIT_STATIC_SPEC ("link_gcc_c_sequence", &link_gcc_c_sequence_spec),
1549 INIT_STATIC_SPEC ("link_ssp", &link_ssp_spec),
1550 INIT_STATIC_SPEC ("link_gcc_math", &link_gcc_math_spec),
1551 INIT_STATIC_SPEC ("endfile", &endfile_spec),
1552 INIT_STATIC_SPEC ("link", &link_spec),
1553 INIT_STATIC_SPEC ("lib", &lib_spec),
1554 INIT_STATIC_SPEC ("mfwrap", &mfwrap_spec),
1555 INIT_STATIC_SPEC ("mflib", &mflib_spec),
1556 INIT_STATIC_SPEC ("link_gomp", &link_gomp_spec),
1557 INIT_STATIC_SPEC ("libgcc", &libgcc_spec),
1558 INIT_STATIC_SPEC ("startfile", &startfile_spec),
1559 INIT_STATIC_SPEC ("switches_need_spaces", &switches_need_spaces),
1560 INIT_STATIC_SPEC ("cross_compile", &cross_compile),
1561 INIT_STATIC_SPEC ("version", &compiler_version),
1562 INIT_STATIC_SPEC ("multilib", &multilib_select),
1563 INIT_STATIC_SPEC ("multilib_defaults", &multilib_defaults),
1564 INIT_STATIC_SPEC ("multilib_extra", &multilib_extra),
1565 INIT_STATIC_SPEC ("multilib_matches", &multilib_matches),
1566 INIT_STATIC_SPEC ("multilib_exclusions", &multilib_exclusions),
1567 INIT_STATIC_SPEC ("multilib_options", &multilib_options),
1568 INIT_STATIC_SPEC ("linker", &linker_name_spec),
1569 INIT_STATIC_SPEC ("link_libgcc", &link_libgcc_spec),
1570 INIT_STATIC_SPEC ("md_exec_prefix", &md_exec_prefix),
1571 INIT_STATIC_SPEC ("md_startfile_prefix", &md_startfile_prefix),
1572 INIT_STATIC_SPEC ("md_startfile_prefix_1", &md_startfile_prefix_1),
1573 INIT_STATIC_SPEC ("startfile_prefix_spec", &startfile_prefix_spec),
1574 INIT_STATIC_SPEC ("sysroot_spec", &sysroot_spec),
1575 INIT_STATIC_SPEC ("sysroot_suffix_spec", &sysroot_suffix_spec),
1576 INIT_STATIC_SPEC ("sysroot_hdrs_suffix_spec", &sysroot_hdrs_suffix_spec),
1579 #ifdef EXTRA_SPECS /* additional specs needed */
1580 /* Structure to keep track of just the first two args of a spec_list.
1581 That is all that the EXTRA_SPECS macro gives us. */
1584 const char *const name;
1585 const char *const ptr;
1588 static const struct spec_list_1 extra_specs_1[] = { EXTRA_SPECS };
1589 static struct spec_list *extra_specs = (struct spec_list *) 0;
1592 /* List of dynamically allocates specs that have been defined so far. */
1594 static struct spec_list *specs = (struct spec_list *) 0;
1596 /* List of static spec functions. */
1598 static const struct spec_function static_spec_functions[] =
1600 { "if-exists", if_exists_spec_function },
1601 { "if-exists-else", if_exists_else_spec_function },
1602 { "replace-outfile", replace_outfile_spec_function },
1603 { "version-compare", version_compare_spec_function },
1604 { "include", include_spec_function },
1605 #ifdef EXTRA_SPEC_FUNCTIONS
1606 EXTRA_SPEC_FUNCTIONS
1611 static int processing_spec_function;
1613 /* Add appropriate libgcc specs to OBSTACK, taking into account
1614 various permutations of -shared-libgcc, -shared, and such. */
1616 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
1618 #ifndef USE_LD_AS_NEEDED
1619 #define USE_LD_AS_NEEDED 0
1623 init_gcc_specs (struct obstack *obstack, const char *shared_name,
1624 const char *static_name, const char *eh_name)
1628 buf = concat ("%{static|static-libgcc:", static_name, " ", eh_name, "}"
1629 "%{!static:%{!static-libgcc:"
1630 #if USE_LD_AS_NEEDED
1631 "%{!shared-libgcc:",
1632 static_name, " --as-needed ", shared_name, " --no-as-needed"
1635 shared_name, "%{!shared: ", static_name, "}"
1639 "%{!shared-libgcc:", static_name, " ", eh_name, "}"
1640 "%{shared-libgcc:", shared_name, " ", static_name, "}"
1644 "%{shared-libgcc:", shared_name, "}"
1645 "%{!shared-libgcc:", static_name, "}"
1648 "%{shared:", shared_name, "}"
1653 obstack_grow (obstack, buf, strlen (buf));
1656 #endif /* ENABLE_SHARED_LIBGCC */
1658 /* Initialize the specs lookup routines. */
1663 struct spec_list *next = (struct spec_list *) 0;
1664 struct spec_list *sl = (struct spec_list *) 0;
1668 return; /* Already initialized. */
1671 notice ("Using built-in specs.\n");
1674 extra_specs = xcalloc (sizeof (struct spec_list),
1675 ARRAY_SIZE (extra_specs_1));
1677 for (i = ARRAY_SIZE (extra_specs_1) - 1; i >= 0; i--)
1679 sl = &extra_specs[i];
1680 sl->name = extra_specs_1[i].name;
1681 sl->ptr = extra_specs_1[i].ptr;
1683 sl->name_len = strlen (sl->name);
1684 sl->ptr_spec = &sl->ptr;
1689 /* Initialize here, not in definition. The IRIX 6 O32 cc sometimes chokes
1690 on ?: in file-scope variable initializations. */
1691 asm_debug = ASM_DEBUG_SPEC;
1693 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--)
1695 sl = &static_specs[i];
1700 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
1701 /* ??? If neither -shared-libgcc nor --static-libgcc was
1702 seen, then we should be making an educated guess. Some proposed
1703 heuristics for ELF include:
1705 (1) If "-Wl,--export-dynamic", then it's a fair bet that the
1706 program will be doing dynamic loading, which will likely
1707 need the shared libgcc.
1709 (2) If "-ldl", then it's also a fair bet that we're doing
1712 (3) For each ET_DYN we're linking against (either through -lfoo
1713 or /some/path/foo.so), check to see whether it or one of
1714 its dependencies depends on a shared libgcc.
1718 If the runtime is fixed to look for program headers instead
1719 of calling __register_frame_info at all, for each object,
1720 use the shared libgcc if any EH symbol referenced.
1722 If crtstuff is fixed to not invoke __register_frame_info
1723 automatically, for each object, use the shared libgcc if
1724 any non-empty unwind section found.
1726 Doing any of this probably requires invoking an external program to
1727 do the actual object file scanning. */
1729 const char *p = libgcc_spec;
1732 /* Transform the extant libgcc_spec into one that uses the shared libgcc
1733 when given the proper command line arguments. */
1736 if (in_sep && *p == '-' && strncmp (p, "-lgcc", 5) == 0)
1738 init_gcc_specs (&obstack,
1740 #ifdef USE_LIBUNWIND_EXCEPTIONS
1746 #ifdef USE_LIBUNWIND_EXCEPTIONS
1747 # ifdef HAVE_LD_STATIC_DYNAMIC
1748 " %{!static:-Bstatic} -lunwind %{!static:-Bdynamic}"
1758 else if (in_sep && *p == 'l' && strncmp (p, "libgcc.a%s", 10) == 0)
1760 /* Ug. We don't know shared library extensions. Hope that
1761 systems that use this form don't do shared libraries. */
1762 init_gcc_specs (&obstack,
1766 #ifdef USE_LIBUNWIND_EXCEPTIONS
1775 obstack_1grow (&obstack, *p);
1776 in_sep = (*p == ' ');
1781 obstack_1grow (&obstack, '\0');
1782 libgcc_spec = XOBFINISH (&obstack, const char *);
1785 #ifdef USE_AS_TRADITIONAL_FORMAT
1786 /* Prepend "--traditional-format" to whatever asm_spec we had before. */
1788 static const char tf[] = "--traditional-format ";
1789 obstack_grow (&obstack, tf, sizeof(tf) - 1);
1790 obstack_grow0 (&obstack, asm_spec, strlen (asm_spec));
1791 asm_spec = XOBFINISH (&obstack, const char *);
1795 /* Prepend LINK_EH_SPEC to whatever link_spec we had before. */
1796 obstack_grow (&obstack, LINK_EH_SPEC, sizeof(LINK_EH_SPEC) - 1);
1797 obstack_grow0 (&obstack, link_spec, strlen (link_spec));
1798 link_spec = XOBFINISH (&obstack, const char *);
1804 /* Change the value of spec NAME to SPEC. If SPEC is empty, then the spec is
1805 removed; If the spec starts with a + then SPEC is added to the end of the
1809 set_spec (const char *name, const char *spec)
1811 struct spec_list *sl;
1812 const char *old_spec;
1813 int name_len = strlen (name);
1816 /* If this is the first call, initialize the statically allocated specs. */
1819 struct spec_list *next = (struct spec_list *) 0;
1820 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--)
1822 sl = &static_specs[i];
1829 /* See if the spec already exists. */
1830 for (sl = specs; sl; sl = sl->next)
1831 if (name_len == sl->name_len && !strcmp (sl->name, name))
1836 /* Not found - make it. */
1837 sl = XNEW (struct spec_list);
1838 sl->name = xstrdup (name);
1839 sl->name_len = name_len;
1840 sl->ptr_spec = &sl->ptr;
1842 *(sl->ptr_spec) = "";
1847 old_spec = *(sl->ptr_spec);
1848 *(sl->ptr_spec) = ((spec[0] == '+' && ISSPACE ((unsigned char)spec[1]))
1849 ? concat (old_spec, spec + 1, NULL)
1854 notice ("Setting spec %s to '%s'\n\n", name, *(sl->ptr_spec));
1857 /* Free the old spec. */
1858 if (old_spec && sl->alloc_p)
1859 free ((void *) old_spec);
1864 /* Accumulate a command (program name and args), and run it. */
1866 /* Vector of pointers to arguments in the current line of specifications. */
1868 static const char **argbuf;
1870 /* Number of elements allocated in argbuf. */
1872 static int argbuf_length;
1874 /* Number of elements in argbuf currently in use (containing args). */
1876 static int argbuf_index;
1878 /* Position in the argbuf array containing the name of the output file
1879 (the value associated with the "-o" flag). */
1881 static int have_o_argbuf_index = 0;
1883 /* Were the options -c or -S passed. */
1884 static int have_c = 0;
1886 /* Was the option -o passed. */
1887 static int have_o = 0;
1889 /* This is the list of suffixes and codes (%g/%u/%U/%j) and the associated
1890 temp file. If the HOST_BIT_BUCKET is used for %j, no entry is made for
1893 static struct temp_name {
1894 const char *suffix; /* suffix associated with the code. */
1895 int length; /* strlen (suffix). */
1896 int unique; /* Indicates whether %g or %u/%U was used. */
1897 const char *filename; /* associated filename. */
1898 int filename_length; /* strlen (filename). */
1899 struct temp_name *next;
1902 /* Number of commands executed so far. */
1904 static int execution_count;
1906 /* Number of commands that exited with a signal. */
1908 static int signal_count;
1910 /* Name with which this program was invoked. */
1912 static const char *programname;
1914 /* Allocate the argument vector. */
1920 argbuf = XNEWVEC (const char *, argbuf_length);
1923 /* Clear out the vector of arguments (after a command is executed). */
1931 /* Add one argument to the vector at the end.
1932 This is done when a space is seen or at the end of the line.
1933 If DELETE_ALWAYS is nonzero, the arg is a filename
1934 and the file should be deleted eventually.
1935 If DELETE_FAILURE is nonzero, the arg is a filename
1936 and the file should be deleted if this compilation fails. */
1939 store_arg (const char *arg, int delete_always, int delete_failure)
1941 if (argbuf_index + 1 == argbuf_length)
1942 argbuf = xrealloc (argbuf, (argbuf_length *= 2) * sizeof (const char *));
1944 argbuf[argbuf_index++] = arg;
1945 argbuf[argbuf_index] = 0;
1947 if (strcmp (arg, "-o") == 0)
1948 have_o_argbuf_index = argbuf_index;
1949 if (delete_always || delete_failure)
1950 record_temp_file (arg, delete_always, delete_failure);
1953 /* Load specs from a file name named FILENAME, replacing occurrences of
1954 various different types of line-endings, \r\n, \n\r and just \r, with
1958 load_specs (const char *filename)
1962 struct stat statbuf;
1969 notice ("Reading specs from %s\n", filename);
1971 /* Open and stat the file. */
1972 desc = open (filename, O_RDONLY, 0);
1974 pfatal_with_name (filename);
1975 if (stat (filename, &statbuf) < 0)
1976 pfatal_with_name (filename);
1978 /* Read contents of file into BUFFER. */
1979 buffer = XNEWVEC (char, statbuf.st_size + 1);
1980 readlen = read (desc, buffer, (unsigned) statbuf.st_size);
1982 pfatal_with_name (filename);
1983 buffer[readlen] = 0;
1986 specs = XNEWVEC (char, readlen + 1);
1988 for (buffer_p = buffer; buffer_p && *buffer_p; buffer_p++)
1994 if (buffer_p > buffer && *(buffer_p - 1) == '\n') /* \n\r */
1996 else if (*(buffer_p + 1) == '\n') /* \r\n */
2010 /* Read compilation specs from a file named FILENAME,
2011 replacing the default ones.
2013 A suffix which starts with `*' is a definition for
2014 one of the machine-specific sub-specs. The "suffix" should be
2015 *asm, *cc1, *cpp, *link, *startfile, etc.
2016 The corresponding spec is stored in asm_spec, etc.,
2017 rather than in the `compilers' vector.
2019 Anything invalid in the file is a fatal error. */
2022 read_specs (const char *filename, int main_p)
2027 buffer = load_specs (filename);
2029 /* Scan BUFFER for specs, putting them in the vector. */
2035 char *in, *out, *p1, *p2, *p3;
2037 /* Advance P in BUFFER to the next nonblank nocomment line. */
2038 p = skip_whitespace (p);
2042 /* Is this a special command that starts with '%'? */
2043 /* Don't allow this for the main specs file, since it would
2044 encourage people to overwrite it. */
2045 if (*p == '%' && !main_p)
2048 while (*p && *p != '\n')
2054 if (!strncmp (p1, "%include", sizeof ("%include") - 1)
2055 && (p1[sizeof "%include" - 1] == ' '
2056 || p1[sizeof "%include" - 1] == '\t'))
2060 p1 += sizeof ("%include");
2061 while (*p1 == ' ' || *p1 == '\t')
2064 if (*p1++ != '<' || p[-2] != '>')
2065 fatal ("specs %%include syntax malformed after %ld characters",
2066 (long) (p1 - buffer + 1));
2069 new_filename = find_a_file (&startfile_prefixes, p1, R_OK, true);
2070 read_specs (new_filename ? new_filename : p1, FALSE);
2073 else if (!strncmp (p1, "%include_noerr", sizeof "%include_noerr" - 1)
2074 && (p1[sizeof "%include_noerr" - 1] == ' '
2075 || p1[sizeof "%include_noerr" - 1] == '\t'))
2079 p1 += sizeof "%include_noerr";
2080 while (*p1 == ' ' || *p1 == '\t')
2083 if (*p1++ != '<' || p[-2] != '>')
2084 fatal ("specs %%include syntax malformed after %ld characters",
2085 (long) (p1 - buffer + 1));
2088 new_filename = find_a_file (&startfile_prefixes, p1, R_OK, true);
2090 read_specs (new_filename, FALSE);
2091 else if (verbose_flag)
2092 notice ("could not find specs file %s\n", p1);
2095 else if (!strncmp (p1, "%rename", sizeof "%rename" - 1)
2096 && (p1[sizeof "%rename" - 1] == ' '
2097 || p1[sizeof "%rename" - 1] == '\t'))
2100 struct spec_list *sl;
2101 struct spec_list *newsl;
2103 /* Get original name. */
2104 p1 += sizeof "%rename";
2105 while (*p1 == ' ' || *p1 == '\t')
2108 if (! ISALPHA ((unsigned char) *p1))
2109 fatal ("specs %%rename syntax malformed after %ld characters",
2110 (long) (p1 - buffer));
2113 while (*p2 && !ISSPACE ((unsigned char) *p2))
2116 if (*p2 != ' ' && *p2 != '\t')
2117 fatal ("specs %%rename syntax malformed after %ld characters",
2118 (long) (p2 - buffer));
2122 while (*p2 == ' ' || *p2 == '\t')
2125 if (! ISALPHA ((unsigned char) *p2))
2126 fatal ("specs %%rename syntax malformed after %ld characters",
2127 (long) (p2 - buffer));
2129 /* Get new spec name. */
2131 while (*p3 && !ISSPACE ((unsigned char) *p3))
2135 fatal ("specs %%rename syntax malformed after %ld characters",
2136 (long) (p3 - buffer));
2139 for (sl = specs; sl; sl = sl->next)
2140 if (name_len == sl->name_len && !strcmp (sl->name, p1))
2144 fatal ("specs %s spec was not found to be renamed", p1);
2146 if (strcmp (p1, p2) == 0)
2149 for (newsl = specs; newsl; newsl = newsl->next)
2150 if (strcmp (newsl->name, p2) == 0)
2151 fatal ("%s: attempt to rename spec '%s' to already defined spec '%s'",
2156 notice ("rename spec %s to %s\n", p1, p2);
2158 notice ("spec is '%s'\n\n", *(sl->ptr_spec));
2162 set_spec (p2, *(sl->ptr_spec));
2164 free ((void *) *(sl->ptr_spec));
2166 *(sl->ptr_spec) = "";
2171 fatal ("specs unknown %% command after %ld characters",
2172 (long) (p1 - buffer));
2175 /* Find the colon that should end the suffix. */
2177 while (*p1 && *p1 != ':' && *p1 != '\n')
2180 /* The colon shouldn't be missing. */
2182 fatal ("specs file malformed after %ld characters",
2183 (long) (p1 - buffer));
2185 /* Skip back over trailing whitespace. */
2187 while (p2 > buffer && (p2[-1] == ' ' || p2[-1] == '\t'))
2190 /* Copy the suffix to a string. */
2191 suffix = save_string (p, p2 - p);
2192 /* Find the next line. */
2193 p = skip_whitespace (p1 + 1);
2195 fatal ("specs file malformed after %ld characters",
2196 (long) (p - buffer));
2199 /* Find next blank line or end of string. */
2200 while (*p1 && !(*p1 == '\n' && (p1[1] == '\n' || p1[1] == '\0')))
2203 /* Specs end at the blank line and do not include the newline. */
2204 spec = save_string (p, p1 - p);
2207 /* Delete backslash-newline sequences from the spec. */
2212 if (in[0] == '\\' && in[1] == '\n')
2214 else if (in[0] == '#')
2215 while (*in && *in != '\n')
2223 if (suffix[0] == '*')
2225 if (! strcmp (suffix, "*link_command"))
2226 link_command_spec = spec;
2228 set_spec (suffix + 1, spec);
2232 /* Add this pair to the vector. */
2234 = xrealloc (compilers,
2235 (n_compilers + 2) * sizeof (struct compiler));
2237 compilers[n_compilers].suffix = suffix;
2238 compilers[n_compilers].spec = spec;
2240 memset (&compilers[n_compilers], 0, sizeof compilers[n_compilers]);
2244 link_command_spec = spec;
2247 if (link_command_spec == 0)
2248 fatal ("spec file has no spec for linking");
2251 /* Record the names of temporary files we tell compilers to write,
2252 and delete them at the end of the run. */
2254 /* This is the common prefix we use to make temp file names.
2255 It is chosen once for each run of this program.
2256 It is substituted into a spec by %g or %j.
2257 Thus, all temp file names contain this prefix.
2258 In practice, all temp file names start with this prefix.
2260 This prefix comes from the envvar TMPDIR if it is defined;
2261 otherwise, from the P_tmpdir macro if that is defined;
2262 otherwise, in /usr/tmp or /tmp;
2263 or finally the current directory if all else fails. */
2265 static const char *temp_filename;
2267 /* Length of the prefix. */
2269 static int temp_filename_length;
2271 /* Define the list of temporary files to delete. */
2276 struct temp_file *next;
2279 /* Queue of files to delete on success or failure of compilation. */
2280 static struct temp_file *always_delete_queue;
2281 /* Queue of files to delete on failure of compilation. */
2282 static struct temp_file *failure_delete_queue;
2284 /* Record FILENAME as a file to be deleted automatically.
2285 ALWAYS_DELETE nonzero means delete it if all compilation succeeds;
2286 otherwise delete it in any case.
2287 FAIL_DELETE nonzero means delete it if a compilation step fails;
2288 otherwise delete it in any case. */
2291 record_temp_file (const char *filename, int always_delete, int fail_delete)
2293 char *const name = xstrdup (filename);
2297 struct temp_file *temp;
2298 for (temp = always_delete_queue; temp; temp = temp->next)
2299 if (! strcmp (name, temp->name))
2302 temp = XNEW (struct temp_file);
2303 temp->next = always_delete_queue;
2305 always_delete_queue = temp;
2312 struct temp_file *temp;
2313 for (temp = failure_delete_queue; temp; temp = temp->next)
2314 if (! strcmp (name, temp->name))
2317 temp = XNEW (struct temp_file);
2318 temp->next = failure_delete_queue;
2320 failure_delete_queue = temp;
2326 /* Delete all the temporary files whose names we previously recorded. */
2328 #ifndef DELETE_IF_ORDINARY
2329 #define DELETE_IF_ORDINARY(NAME,ST,VERBOSE_FLAG) \
2332 if (stat (NAME, &ST) >= 0 && S_ISREG (ST.st_mode)) \
2333 if (unlink (NAME) < 0) \
2335 perror_with_name (NAME); \
2340 delete_if_ordinary (const char *name)
2346 printf ("Delete %s? (y or n) ", name);
2350 while ((c = getchar ()) != '\n' && c != EOF)
2353 if (i == 'y' || i == 'Y')
2355 DELETE_IF_ORDINARY (name, st, verbose_flag);
2359 delete_temp_files (void)
2361 struct temp_file *temp;
2363 for (temp = always_delete_queue; temp; temp = temp->next)
2364 delete_if_ordinary (temp->name);
2365 always_delete_queue = 0;
2368 /* Delete all the files to be deleted on error. */
2371 delete_failure_queue (void)
2373 struct temp_file *temp;
2375 for (temp = failure_delete_queue; temp; temp = temp->next)
2376 delete_if_ordinary (temp->name);
2380 clear_failure_queue (void)
2382 failure_delete_queue = 0;
2385 /* Call CALLBACK for each path in PATHS, breaking out early if CALLBACK
2387 If DO_MULTI is true iterate over the paths twice, first with multilib
2388 suffix then without, otherwise iterate over the paths once without
2389 adding a multilib suffix. When DO_MULTI is true, some attempt is made
2390 to avoid visiting the same path twice, but we could do better. For
2391 instance, /usr/lib/../lib is considered different from /usr/lib.
2392 At least EXTRA_SPACE chars past the end of the path passed to
2393 CALLBACK are available for use by the callback.
2394 CALLBACK_INFO allows extra parameters to be passed to CALLBACK.
2396 Returns the value returned by CALLBACK. */
2399 for_each_path (const struct path_prefix *paths,
2402 void *(*callback) (char *, void *),
2403 void *callback_info)
2405 struct prefix_list *pl;
2406 const char *multi_dir = NULL;
2407 const char *multi_os_dir = NULL;
2408 const char *multi_suffix;
2409 const char *just_multi_suffix;
2412 bool skip_multi_dir = false;
2413 bool skip_multi_os_dir = false;
2415 multi_suffix = machine_suffix;
2416 just_multi_suffix = just_machine_suffix;
2417 if (do_multi && multilib_dir && strcmp (multilib_dir, ".") != 0)
2419 multi_dir = concat (multilib_dir, dir_separator_str, NULL);
2420 multi_suffix = concat (multi_suffix, multi_dir, NULL);
2421 just_multi_suffix = concat (just_multi_suffix, multi_dir, NULL);
2423 if (do_multi && multilib_os_dir && strcmp (multilib_os_dir, ".") != 0)
2424 multi_os_dir = concat (multilib_os_dir, dir_separator_str, NULL);
2428 size_t multi_dir_len = 0;
2429 size_t multi_os_dir_len = 0;
2431 size_t just_suffix_len;
2435 multi_dir_len = strlen (multi_dir);
2437 multi_os_dir_len = strlen (multi_os_dir);
2438 suffix_len = strlen (multi_suffix);
2439 just_suffix_len = strlen (just_multi_suffix);
2443 len = paths->max_len + extra_space + 1;
2444 if (suffix_len > multi_os_dir_len)
2447 len += multi_os_dir_len;
2448 path = XNEWVEC (char, len);
2451 for (pl = paths->plist; pl != 0; pl = pl->next)
2453 len = strlen (pl->prefix);
2454 memcpy (path, pl->prefix, len);
2456 /* Look first in MACHINE/VERSION subdirectory. */
2457 if (!skip_multi_dir)
2459 memcpy (path + len, multi_suffix, suffix_len + 1);
2460 ret = callback (path, callback_info);
2465 /* Some paths are tried with just the machine (ie. target)
2466 subdir. This is used for finding as, ld, etc. */
2468 && pl->require_machine_suffix == 2)
2470 memcpy (path + len, just_multi_suffix, just_suffix_len + 1);
2471 ret = callback (path, callback_info);
2476 /* Now try the base path. */
2477 if (!pl->require_machine_suffix
2478 && !(pl->os_multilib ? skip_multi_os_dir : skip_multi_dir))
2480 const char *this_multi;
2481 size_t this_multi_len;
2483 if (pl->os_multilib)
2485 this_multi = multi_os_dir;
2486 this_multi_len = multi_os_dir_len;
2490 this_multi = multi_dir;
2491 this_multi_len = multi_dir_len;
2495 memcpy (path + len, this_multi, this_multi_len + 1);
2499 ret = callback (path, callback_info);
2507 if (multi_dir == NULL && multi_os_dir == NULL)
2510 /* Run through the paths again, this time without multilibs.
2511 Don't repeat any we have already seen. */
2514 free ((char *) multi_dir);
2516 free ((char *) multi_suffix);
2517 multi_suffix = machine_suffix;
2518 free ((char *) just_multi_suffix);
2519 just_multi_suffix = just_machine_suffix;
2522 skip_multi_dir = true;
2525 free ((char *) multi_os_dir);
2526 multi_os_dir = NULL;
2529 skip_multi_os_dir = true;
2534 free ((char *) multi_dir);
2535 free ((char *) multi_suffix);
2536 free ((char *) just_multi_suffix);
2539 free ((char *) multi_os_dir);
2545 /* Callback for build_search_list. Adds path to obstack being built. */
2547 struct add_to_obstack_info {
2554 add_to_obstack (char *path, void *data)
2556 struct add_to_obstack_info *info = data;
2558 if (info->check_dir && !is_directory (path, false))
2561 if (!info->first_time)
2562 obstack_1grow (info->ob, PATH_SEPARATOR);
2564 obstack_grow (info->ob, path, strlen (path));
2566 info->first_time = false;
2570 /* Build a list of search directories from PATHS.
2571 PREFIX is a string to prepend to the list.
2572 If CHECK_DIR_P is true we ensure the directory exists.
2573 If DO_MULTI is true, multilib paths are output first, then
2575 This is used mostly by putenv_from_prefixes so we use `collect_obstack'.
2576 It is also used by the --print-search-dirs flag. */
2579 build_search_list (const struct path_prefix *paths, const char *prefix,
2580 bool check_dir, bool do_multi)
2582 struct add_to_obstack_info info;
2584 info.ob = &collect_obstack;
2585 info.check_dir = check_dir;
2586 info.first_time = true;
2588 obstack_grow (&collect_obstack, prefix, strlen (prefix));
2589 obstack_1grow (&collect_obstack, '=');
2591 for_each_path (paths, do_multi, 0, add_to_obstack, &info);
2593 obstack_1grow (&collect_obstack, '\0');
2594 return XOBFINISH (&collect_obstack, char *);
2597 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
2601 putenv_from_prefixes (const struct path_prefix *paths, const char *env_var,
2604 putenv (build_search_list (paths, env_var, true, do_multi));
2607 /* Check whether NAME can be accessed in MODE. This is like access,
2608 except that it never considers directories to be executable. */
2611 access_check (const char *name, int mode)
2617 if (stat (name, &st) < 0
2618 || S_ISDIR (st.st_mode))
2622 return access (name, mode);
2625 /* Callback for find_a_file. Appends the file name to the directory
2626 path. If the resulting file exists in the right mode, return the
2627 full pathname to the file. */
2629 struct file_at_path_info {
2638 file_at_path (char *path, void *data)
2640 struct file_at_path_info *info = data;
2641 size_t len = strlen (path);
2643 memcpy (path + len, info->name, info->name_len);
2644 len += info->name_len;
2646 /* Some systems have a suffix for executable files.
2647 So try appending that first. */
2648 if (info->suffix_len)
2650 memcpy (path + len, info->suffix, info->suffix_len + 1);
2651 if (access_check (path, info->mode) == 0)
2656 if (access_check (path, info->mode) == 0)
2662 /* Search for NAME using the prefix list PREFIXES. MODE is passed to
2663 access to check permissions. If DO_MULTI is true, search multilib
2664 paths then non-multilib paths, otherwise do not search multilib paths.
2665 Return 0 if not found, otherwise return its name, allocated with malloc. */
2668 find_a_file (const struct path_prefix *pprefix, const char *name, int mode,
2671 struct file_at_path_info info;
2673 #ifdef DEFAULT_ASSEMBLER
2674 if (! strcmp (name, "as") && access (DEFAULT_ASSEMBLER, mode) == 0)
2675 return xstrdup (DEFAULT_ASSEMBLER);
2678 #ifdef DEFAULT_LINKER
2679 if (! strcmp(name, "ld") && access (DEFAULT_LINKER, mode) == 0)
2680 return xstrdup (DEFAULT_LINKER);
2683 /* Determine the filename to execute (special case for absolute paths). */
2685 if (IS_ABSOLUTE_PATH (name))
2687 if (access (name, mode) == 0)
2688 return xstrdup (name);
2694 info.suffix = (mode & X_OK) != 0 ? HOST_EXECUTABLE_SUFFIX : "";
2695 info.name_len = strlen (info.name);
2696 info.suffix_len = strlen (info.suffix);
2699 return for_each_path (pprefix, do_multi, info.name_len + info.suffix_len,
2700 file_at_path, &info);
2703 /* Ranking of prefixes in the sort list. -B prefixes are put before
2706 enum path_prefix_priority
2708 PREFIX_PRIORITY_B_OPT,
2709 PREFIX_PRIORITY_LAST
2712 /* Add an entry for PREFIX in PLIST. The PLIST is kept in ascending
2713 order according to PRIORITY. Within each PRIORITY, new entries are
2716 If WARN is nonzero, we will warn if no file is found
2717 through this prefix. WARN should point to an int
2718 which will be set to 1 if this entry is used.
2720 COMPONENT is the value to be passed to update_path.
2722 REQUIRE_MACHINE_SUFFIX is 1 if this prefix can't be used without
2723 the complete value of machine_suffix.
2724 2 means try both machine_suffix and just_machine_suffix. */
2727 add_prefix (struct path_prefix *pprefix, const char *prefix,
2728 const char *component, /* enum prefix_priority */ int priority,
2729 int require_machine_suffix, int os_multilib)
2731 struct prefix_list *pl, **prev;
2734 for (prev = &pprefix->plist;
2735 (*prev) != NULL && (*prev)->priority <= priority;
2736 prev = &(*prev)->next)
2739 /* Keep track of the longest prefix. */
2741 prefix = update_path (prefix, component);
2742 len = strlen (prefix);
2743 if (len > pprefix->max_len)
2744 pprefix->max_len = len;
2746 pl = XNEW (struct prefix_list);
2747 pl->prefix = prefix;
2748 pl->require_machine_suffix = require_machine_suffix;
2749 pl->priority = priority;
2750 pl->os_multilib = os_multilib;
2752 /* Insert after PREV. */
2757 /* Same as add_prefix, but prepending target_system_root to prefix. */
2759 add_sysrooted_prefix (struct path_prefix *pprefix, const char *prefix,
2760 const char *component,
2761 /* enum prefix_priority */ int priority,
2762 int require_machine_suffix, int os_multilib)
2764 if (!IS_ABSOLUTE_PATH (prefix))
2765 fatal ("system path '%s' is not absolute", prefix);
2767 if (target_system_root)
2769 if (target_sysroot_suffix)
2770 prefix = concat (target_sysroot_suffix, prefix, NULL);
2771 prefix = concat (target_system_root, prefix, NULL);
2773 /* We have to override this because GCC's notion of sysroot
2774 moves along with GCC. */
2778 add_prefix (pprefix, prefix, component, priority,
2779 require_machine_suffix, os_multilib);
2782 /* Execute the command specified by the arguments on the current line of spec.
2783 When using pipes, this includes several piped-together commands
2784 with `|' between them.
2786 Return 0 if successful, -1 if failed. */
2792 int n_commands; /* # of command. */
2794 struct pex_obj *pex;
2797 const char *prog; /* program name. */
2798 const char **argv; /* vector of args. */
2801 struct command *commands; /* each command buffer with above info. */
2803 gcc_assert (!processing_spec_function);
2805 /* Count # of piped commands. */
2806 for (n_commands = 1, i = 0; i < argbuf_index; i++)
2807 if (strcmp (argbuf[i], "|") == 0)
2810 /* Get storage for each command. */
2811 commands = alloca (n_commands * sizeof (struct command));
2813 /* Split argbuf into its separate piped processes,
2814 and record info about each one.
2815 Also search for the programs that are to be run. */
2817 commands[0].prog = argbuf[0]; /* first command. */
2818 commands[0].argv = &argbuf[0];
2819 string = find_a_file (&exec_prefixes, commands[0].prog, X_OK, false);
2822 commands[0].argv[0] = string;
2824 for (n_commands = 1, i = 0; i < argbuf_index; i++)
2825 if (strcmp (argbuf[i], "|") == 0)
2826 { /* each command. */
2827 #if defined (__MSDOS__) || defined (OS2) || defined (VMS)
2828 fatal ("-pipe not supported");
2830 argbuf[i] = 0; /* termination of command args. */
2831 commands[n_commands].prog = argbuf[i + 1];
2832 commands[n_commands].argv = &argbuf[i + 1];
2833 string = find_a_file (&exec_prefixes, commands[n_commands].prog,
2836 commands[n_commands].argv[0] = string;
2840 argbuf[argbuf_index] = 0;
2842 /* If -v, print what we are about to do, and maybe query. */
2846 /* For help listings, put a blank line between sub-processes. */
2847 if (print_help_list)
2848 fputc ('\n', stderr);
2850 /* Print each piped command as a separate line. */
2851 for (i = 0; i < n_commands; i++)
2853 const char *const *j;
2855 if (verbose_only_flag)
2857 for (j = commands[i].argv; *j; j++)
2860 fprintf (stderr, " \"");
2861 for (p = *j; *p; ++p)
2863 if (*p == '"' || *p == '\\' || *p == '$')
2864 fputc ('\\', stderr);
2867 fputc ('"', stderr);
2871 for (j = commands[i].argv; *j; j++)
2872 fprintf (stderr, " %s", *j);
2874 /* Print a pipe symbol after all but the last command. */
2875 if (i + 1 != n_commands)
2876 fprintf (stderr, " |");
2877 fprintf (stderr, "\n");
2880 if (verbose_only_flag != 0)
2882 /* verbose_only_flag should act as if the spec was
2883 executed, so increment execution_count before
2884 returning. This prevents spurious warnings about
2885 unused linker input files, etc. */
2890 notice ("\nGo ahead? (y or n) ");
2894 while (getchar () != '\n')
2897 if (i != 'y' && i != 'Y')
2902 #ifdef ENABLE_VALGRIND_CHECKING
2903 /* Run the each command through valgrind. To simplify prepending the
2904 path to valgrind and the option "-q" (for quiet operation unless
2905 something triggers), we allocate a separate argv array. */
2907 for (i = 0; i < n_commands; i++)
2913 for (argc = 0; commands[i].argv[argc] != NULL; argc++)
2916 argv = alloca ((argc + 3) * sizeof (char *));
2918 argv[0] = VALGRIND_PATH;
2920 for (j = 2; j < argc + 2; j++)
2921 argv[j] = commands[i].argv[j - 2];
2924 commands[i].argv = argv;
2925 commands[i].prog = argv[0];
2929 /* Run each piped subprocess. */
2931 pex = pex_init (PEX_USE_PIPES | (report_times ? PEX_RECORD_TIMES : 0),
2932 programname, temp_filename);
2934 pfatal_with_name (_("pex_init failed"));
2936 for (i = 0; i < n_commands; i++)
2940 const char *string = commands[i].argv[0];
2942 errmsg = pex_run (pex,
2943 ((i + 1 == n_commands ? PEX_LAST : 0)
2944 | (string == commands[i].prog ? PEX_SEARCH : 0)),
2945 string, (char * const *) commands[i].argv,
2954 pfatal_with_name (errmsg);
2958 if (string != commands[i].prog)
2959 free ((void *) string);
2964 /* Wait for all the subprocesses to finish. */
2968 struct pex_time *times = NULL;
2971 statuses = alloca (n_commands * sizeof (int));
2972 if (!pex_get_status (pex, n_commands, statuses))
2973 pfatal_with_name (_("failed to get exit status"));
2977 times = alloca (n_commands * sizeof (struct pex_time));
2978 if (!pex_get_times (pex, n_commands, times))
2979 pfatal_with_name (_("failed to get process times"));
2984 for (i = 0; i < n_commands; ++i)
2986 int status = statuses[i];
2988 if (WIFSIGNALED (status))
2991 /* SIGPIPE is a special case. It happens in -pipe mode
2992 when the compiler dies before the preprocessor is done,
2993 or the assembler dies before the compiler is done.
2994 There's generally been an error already, and this is
2995 just fallout. So don't generate another error unless
2996 we would otherwise have succeeded. */
2997 if (WTERMSIG (status) == SIGPIPE
2998 && (signal_count || greatest_status >= MIN_FATAL_STATUS))
3006 Internal error: %s (program %s)\n\
3007 Please submit a full bug report.\n\
3008 See %s for instructions.",
3009 strsignal (WTERMSIG (status)), commands[i].prog,
3012 else if (WIFEXITED (status)
3013 && WEXITSTATUS (status) >= MIN_FATAL_STATUS)
3015 if (WEXITSTATUS (status) > greatest_status)
3016 greatest_status = WEXITSTATUS (status);
3022 struct pex_time *pt = ×[i];
3025 ut = ((double) pt->user_seconds
3026 + (double) pt->user_microseconds / 1.0e6);
3027 st = ((double) pt->system_seconds
3028 + (double) pt->system_microseconds / 1.0e6);
3031 notice ("# %s %.2f %.2f\n", commands[i].prog, ut, st);
3039 /* Find all the switches given to us
3040 and make a vector describing them.
3041 The elements of the vector are strings, one per switch given.
3042 If a switch uses following arguments, then the `part1' field
3043 is the switch itself and the `args' field
3044 is a null-terminated vector containing the following arguments.
3045 The `live_cond' field is:
3047 1 if the switch is true in a conditional spec,
3048 -1 if false (overridden by a later switch)
3049 -2 if this switch should be ignored (used in %<S)
3050 The `validated' field is nonzero if any spec has looked at this switch;
3051 if it remains zero at the end of the run, it must be meaningless. */
3054 #define SWITCH_FALSE -1
3055 #define SWITCH_IGNORE -2
3056 #define SWITCH_LIVE 1
3063 unsigned char validated;
3064 unsigned char ordering;
3067 static struct switchstr *switches;
3069 static int n_switches;
3071 /* Language is one of three things:
3073 1) The name of a real programming language.
3074 2) NULL, indicating that no one has figured out
3076 3) '*', indicating that the file should be passed
3081 const char *language;
3082 struct compiler *incompiler;
3087 /* Also a vector of input files specified. */
3089 static struct infile *infiles;
3093 /* True if multiple input files are being compiled to a single
3096 static bool combine_inputs;
3098 /* This counts the number of libraries added by lang_specific_driver, so that
3099 we can tell if there were any user supplied any files or libraries. */
3101 static int added_libraries;
3103 /* And a vector of corresponding output files is made up later. */
3105 const char **outfiles;
3107 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3109 /* Convert NAME to a new name if it is the standard suffix. DO_EXE
3110 is true if we should look for an executable suffix. DO_OBJ
3111 is true if we should look for an object suffix. */
3114 convert_filename (const char *name, int do_exe ATTRIBUTE_UNUSED,
3115 int do_obj ATTRIBUTE_UNUSED)
3117 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3125 len = strlen (name);
3127 #ifdef HAVE_TARGET_OBJECT_SUFFIX
3128 /* Convert x.o to x.obj if TARGET_OBJECT_SUFFIX is ".obj". */
3129 if (do_obj && len > 2
3130 && name[len - 2] == '.'
3131 && name[len - 1] == 'o')
3133 obstack_grow (&obstack, name, len - 2);
3134 obstack_grow0 (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX));
3135 name = XOBFINISH (&obstack, const char *);
3139 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3140 /* If there is no filetype, make it the executable suffix (which includes
3141 the "."). But don't get confused if we have just "-o". */
3142 if (! do_exe || TARGET_EXECUTABLE_SUFFIX[0] == 0 || (len == 2 && name[0] == '-'))
3145 for (i = len - 1; i >= 0; i--)
3146 if (IS_DIR_SEPARATOR (name[i]))
3149 for (i++; i < len; i++)
3153 obstack_grow (&obstack, name, len);
3154 obstack_grow0 (&obstack, TARGET_EXECUTABLE_SUFFIX,
3155 strlen (TARGET_EXECUTABLE_SUFFIX));
3156 name = XOBFINISH (&obstack, const char *);
3163 /* Display the command line switches accepted by gcc. */
3167 printf (_("Usage: %s [options] file...\n"), programname);
3168 fputs (_("Options:\n"), stdout);
3170 fputs (_(" -pass-exit-codes Exit with highest error code from a phase\n"), stdout);
3171 fputs (_(" --help Display this information\n"), stdout);
3172 fputs (_(" --target-help Display target specific command line options\n"), stdout);
3174 fputs (_(" (Use '-v --help' to display command line options of sub-processes)\n"), stdout);
3175 fputs (_(" -dumpspecs Display all of the built in spec strings\n"), stdout);
3176 fputs (_(" -dumpversion Display the version of the compiler\n"), stdout);
3177 fputs (_(" -dumpmachine Display the compiler's target processor\n"), stdout);
3178 fputs (_(" -print-search-dirs Display the directories in the compiler's search path\n"), stdout);
3179 fputs (_(" -print-libgcc-file-name Display the name of the compiler's companion library\n"), stdout);
3180 fputs (_(" -print-file-name=<lib> Display the full path to library <lib>\n"), stdout);
3181 fputs (_(" -print-prog-name=<prog> Display the full path to compiler component <prog>\n"), stdout);
3182 fputs (_(" -print-multi-directory Display the root directory for versions of libgcc\n"), stdout);
3184 -print-multi-lib Display the mapping between command line options and\n\
3185 multiple library search directories\n"), stdout);
3186 fputs (_(" -print-multi-os-directory Display the relative path to OS libraries\n"), stdout);
3187 fputs (_(" -Wa,<options> Pass comma-separated <options> on to the assembler\n"), stdout);
3188 fputs (_(" -Wp,<options> Pass comma-separated <options> on to the preprocessor\n"), stdout);
3189 fputs (_(" -Wl,<options> Pass comma-separated <options> on to the linker\n"), stdout);
3190 fputs (_(" -Xassembler <arg> Pass <arg> on to the assembler\n"), stdout);
3191 fputs (_(" -Xpreprocessor <arg> Pass <arg> on to the preprocessor\n"), stdout);
3192 fputs (_(" -Xlinker <arg> Pass <arg> on to the linker\n"), stdout);
3193 fputs (_(" -combine Pass multiple source files to compiler at once\n"), stdout);
3194 fputs (_(" -save-temps Do not delete intermediate files\n"), stdout);
3195 fputs (_(" -pipe Use pipes rather than intermediate files\n"), stdout);
3196 fputs (_(" -time Time the execution of each subprocess\n"), stdout);
3197 fputs (_(" -specs=<file> Override built-in specs with the contents of <file>\n"), stdout);
3198 fputs (_(" -std=<standard> Assume that the input sources are for <standard>\n"), stdout);
3200 --sysroot=<directory> Use <directory> as the root directory for headers\n\
3201 for headers and libraries\n"), stdout);
3202 fputs (_(" -B <directory> Add <directory> to the compiler's search paths\n"), stdout);
3203 fputs (_(" -b <machine> Run gcc for target <machine>, if installed\n"), stdout);
3204 fputs (_(" -V <version> Run gcc version number <version>, if installed\n"), stdout);
3205 fputs (_(" -v Display the programs invoked by the compiler\n"), stdout);
3206 fputs (_(" -### Like -v but options quoted and commands not executed\n"), stdout);
3207 fputs (_(" -E Preprocess only; do not compile, assemble or link\n"), stdout);
3208 fputs (_(" -S Compile only; do not assemble or link\n"), stdout);
3209 fputs (_(" -c Compile and assemble, but do not link\n"), stdout);
3210 fputs (_(" -o <file> Place the output into <file>\n"), stdout);
3212 -x <language> Specify the language of the following input files\n\
3213 Permissible languages include: c c++ assembler none\n\
3214 'none' means revert to the default behavior of\n\
3215 guessing the language based on the file's extension\n\
3219 \nOptions starting with -g, -f, -m, -O, -W, or --param are automatically\n\
3220 passed on to the various sub-processes invoked by %s. In order to pass\n\
3221 other options on to these processes the -W<letter> options must be used.\n\
3224 /* The rest of the options are displayed by invocations of the various
3229 add_preprocessor_option (const char *option, int len)
3231 n_preprocessor_options++;
3233 if (! preprocessor_options)
3234 preprocessor_options = XNEWVEC (char *, n_preprocessor_options);
3236 preprocessor_options = xrealloc (preprocessor_options,
3237 n_preprocessor_options * sizeof (char *));
3239 preprocessor_options [n_preprocessor_options - 1] =
3240 save_string (option, len);
3244 add_assembler_option (const char *option, int len)
3246 n_assembler_options++;
3248 if (! assembler_options)
3249 assembler_options = XNEWVEC (char *, n_assembler_options);
3251 assembler_options = xrealloc (assembler_options,
3252 n_assembler_options * sizeof (char *));
3254 assembler_options [n_assembler_options - 1] = save_string (option, len);
3258 add_linker_option (const char *option, int len)
3262 if (! linker_options)
3263 linker_options = XNEWVEC (char *, n_linker_options);
3265 linker_options = xrealloc (linker_options,
3266 n_linker_options * sizeof (char *));
3268 linker_options [n_linker_options - 1] = save_string (option, len);
3271 /* Create the vector `switches' and its contents.
3272 Store its length in `n_switches'. */
3275 process_command (int argc, const char **argv)
3280 const char *spec_lang = 0;
3281 int last_language_n_infiles;
3282 int lang_n_infiles = 0;
3283 #ifdef MODIFY_TARGET_NAME
3284 int is_modify_target_name;
3288 GET_ENVIRONMENT (gcc_exec_prefix, "GCC_EXEC_PREFIX");
3292 added_libraries = 0;
3294 /* Figure compiler version from version string. */
3296 compiler_version = temp1 = xstrdup (version_string);
3298 for (; *temp1; ++temp1)
3307 /* If there is a -V or -b option (or both), process it now, before
3308 trying to interpret the rest of the command line.
3309 Use heuristic that all configuration names must have at least
3310 one dash '-'. This allows us to pass options starting with -b. */
3311 if (argc > 1 && argv[1][0] == '-'
3312 && (argv[1][1] == 'V' ||
3313 ((argv[1][1] == 'b') && (NULL != strchr(argv[1] + 2,'-')))))
3315 const char *new_version = DEFAULT_TARGET_VERSION;
3316 const char *new_machine = DEFAULT_TARGET_MACHINE;
3317 const char *progname = argv[0];
3322 while (argc > 1 && argv[1][0] == '-'
3323 && (argv[1][1] == 'V' ||
3324 ((argv[1][1] == 'b') && ( NULL != strchr(argv[1] + 2,'-')))))
3326 char opt = argv[1][1];
3328 if (argv[1][2] != '\0')
3341 fatal ("'-%c' option must have argument", opt);
3348 for (baselen = strlen (progname); baselen > 0; baselen--)
3349 if (IS_DIR_SEPARATOR (progname[baselen-1]))
3351 new_argv0 = xmemdup (progname, baselen,
3352 baselen + concat_length (new_version, new_machine,
3353 "-gcc-", NULL) + 1);
3354 strcpy (new_argv0 + baselen, new_machine);
3355 strcat (new_argv0, "-gcc-");
3356 strcat (new_argv0, new_version);
3358 new_argv = xmemdup (argv, (argc + 1) * sizeof (argv[0]),
3359 (argc + 1) * sizeof (argv[0]));
3360 new_argv[0] = new_argv0;
3362 execvp (new_argv0, new_argv);
3363 fatal ("couldn't run '%s': %s", new_argv0, xstrerror (errno));
3366 /* Set up the default search paths. If there is no GCC_EXEC_PREFIX,
3367 see if we can create it from the pathname specified in argv[0]. */
3369 gcc_libexec_prefix = standard_libexec_prefix;
3371 /* FIXME: make_relative_prefix doesn't yet work for VMS. */
3372 if (!gcc_exec_prefix)
3374 gcc_exec_prefix = make_relative_prefix (argv[0], standard_bindir_prefix,
3375 standard_exec_prefix);
3376 gcc_libexec_prefix = make_relative_prefix (argv[0],
3377 standard_bindir_prefix,
3378 standard_libexec_prefix);
3379 if (gcc_exec_prefix)
3380 putenv (concat ("GCC_EXEC_PREFIX=", gcc_exec_prefix, NULL));
3384 /* make_relative_prefix requires a program name, but
3385 GCC_EXEC_PREFIX is typically a directory name with a trailing
3386 / (which is ignored by make_relative_prefix), so append a
3388 char *tmp_prefix = concat (gcc_exec_prefix, "gcc", NULL);
3389 gcc_libexec_prefix = make_relative_prefix (tmp_prefix,
3390 standard_exec_prefix,
3391 standard_libexec_prefix);
3397 if (gcc_exec_prefix)
3399 int len = strlen (gcc_exec_prefix);
3401 if (len > (int) sizeof ("/lib/gcc/") - 1
3402 && (IS_DIR_SEPARATOR (gcc_exec_prefix[len-1])))
3404 temp = gcc_exec_prefix + len - sizeof ("/lib/gcc/") + 1;
3405 if (IS_DIR_SEPARATOR (*temp)
3406 && strncmp (temp + 1, "lib", 3) == 0
3407 && IS_DIR_SEPARATOR (temp[4])
3408 && strncmp (temp + 5, "gcc", 3) == 0)
3409 len -= sizeof ("/lib/gcc/") - 1;
3412 set_std_prefix (gcc_exec_prefix, len);
3413 add_prefix (&exec_prefixes, gcc_libexec_prefix, "GCC",
3414 PREFIX_PRIORITY_LAST, 0, 0);
3415 add_prefix (&startfile_prefixes, gcc_exec_prefix, "GCC",
3416 PREFIX_PRIORITY_LAST, 0, 0);
3419 /* COMPILER_PATH and LIBRARY_PATH have values
3420 that are lists of directory names with colons. */
3422 GET_ENVIRONMENT (temp, "COMPILER_PATH");
3425 const char *startp, *endp;
3426 char *nstore = alloca (strlen (temp) + 3);
3428 startp = endp = temp;
3431 if (*endp == PATH_SEPARATOR || *endp == 0)
3433 strncpy (nstore, startp, endp - startp);
3435 strcpy (nstore, concat (".", dir_separator_str, NULL));
3436 else if (!IS_DIR_SEPARATOR (endp[-1]))
3438 nstore[endp - startp] = DIR_SEPARATOR;
3439 nstore[endp - startp + 1] = 0;
3442 nstore[endp - startp] = 0;
3443 add_prefix (&exec_prefixes, nstore, 0,
3444 PREFIX_PRIORITY_LAST, 0, 0);
3445 add_prefix (&include_prefixes, nstore, 0,
3446 PREFIX_PRIORITY_LAST, 0, 0);
3449 endp = startp = endp + 1;
3456 GET_ENVIRONMENT (temp, LIBRARY_PATH_ENV);
3457 if (temp && *cross_compile == '0')
3459 const char *startp, *endp;
3460 char *nstore = alloca (strlen (temp) + 3);
3462 startp = endp = temp;
3465 if (*endp == PATH_SEPARATOR || *endp == 0)
3467 strncpy (nstore, startp, endp - startp);
3469 strcpy (nstore, concat (".", dir_separator_str, NULL));
3470 else if (!IS_DIR_SEPARATOR (endp[-1]))
3472 nstore[endp - startp] = DIR_SEPARATOR;
3473 nstore[endp - startp + 1] = 0;
3476 nstore[endp - startp] = 0;
3477 add_prefix (&startfile_prefixes, nstore, NULL,
3478 PREFIX_PRIORITY_LAST, 0, 1);
3481 endp = startp = endp + 1;
3488 /* Use LPATH like LIBRARY_PATH (for the CMU build program). */
3489 GET_ENVIRONMENT (temp, "LPATH");
3490 if (temp && *cross_compile == '0')
3492 const char *startp, *endp;
3493 char *nstore = alloca (strlen (temp) + 3);
3495 startp = endp = temp;
3498 if (*endp == PATH_SEPARATOR || *endp == 0)
3500 strncpy (nstore, startp, endp - startp);
3502 strcpy (nstore, concat (".", dir_separator_str, NULL));
3503 else if (!IS_DIR_SEPARATOR (endp[-1]))
3505 nstore[endp - startp] = DIR_SEPARATOR;
3506 nstore[endp - startp + 1] = 0;
3509 nstore[endp - startp] = 0;
3510 add_prefix (&startfile_prefixes, nstore, NULL,
3511 PREFIX_PRIORITY_LAST, 0, 1);
3514 endp = startp = endp + 1;
3521 /* Convert new-style -- options to old-style. */
3522 translate_options (&argc, (const char *const **) &argv);
3524 /* Do language-specific adjustment/addition of flags. */
3525 lang_specific_driver (&argc, (const char *const **) &argv, &added_libraries);
3527 /* Scan argv twice. Here, the first time, just count how many switches
3528 there will be in their vector, and how many input files in theirs.
3529 Here we also parse the switches that cc itself uses (e.g. -v). */
3531 for (i = 1; i < argc; i++)
3533 if (! strcmp (argv[i], "-dumpspecs"))
3535 struct spec_list *sl;
3537 for (sl = specs; sl; sl = sl->next)
3538 printf ("*%s:\n%s\n\n", sl->name, *(sl->ptr_spec));
3539 if (link_command_spec)
3540 printf ("*link_command:\n%s\n\n", link_command_spec);
3543 else if (! strcmp (argv[i], "-dumpversion"))
3545 printf ("%s\n", spec_version);
3548 else if (! strcmp (argv[i], "-dumpmachine"))
3550 printf ("%s\n", spec_machine);
3553 else if (strcmp (argv[i], "-fversion") == 0)
3555 /* translate_options () has turned --version into -fversion. */
3556 printf (_("%s (GCC) %s\n"), programname, version_string);
3557 printf ("Copyright %s 2006 Free Software Foundation, Inc.\n",
3559 fputs (_("This is free software; see the source for copying conditions. There is NO\n\
3560 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\n"),
3564 else if (strcmp (argv[i], "-fhelp") == 0)
3566 /* translate_options () has turned --help into -fhelp. */
3567 print_help_list = 1;
3569 /* We will be passing a dummy file on to the sub-processes. */
3573 /* CPP driver cannot obtain switch from cc1_options. */
3575 add_preprocessor_option ("--help", 6);
3576 add_assembler_option ("--help", 6);
3577 add_linker_option ("--help", 6);
3579 else if (strcmp (argv[i], "-ftarget-help") == 0)
3581 /* translate_options() has turned --target-help into -ftarget-help. */
3582 target_help_flag = 1;
3584 /* We will be passing a dummy file on to the sub-processes. */
3588 /* CPP driver cannot obtain switch from cc1_options. */
3590 add_preprocessor_option ("--target-help", 13);
3591 add_assembler_option ("--target-help", 13);
3592 add_linker_option ("--target-help", 13);
3594 else if (! strcmp (argv[i], "-pass-exit-codes"))
3596 pass_exit_codes = 1;
3599 else if (! strcmp (argv[i], "-print-search-dirs"))
3600 print_search_dirs = 1;
3601 else if (! strcmp (argv[i], "-print-libgcc-file-name"))
3602 print_file_name = "libgcc.a";
3603 else if (! strncmp (argv[i], "-print-file-name=", 17))
3604 print_file_name = argv[i] + 17;
3605 else if (! strncmp (argv[i], "-print-prog-name=", 17))
3606 print_prog_name = argv[i] + 17;
3607 else if (! strcmp (argv[i], "-print-multi-lib"))
3608 print_multi_lib = 1;
3609 else if (! strcmp (argv[i], "-print-multi-directory"))
3610 print_multi_directory = 1;
3611 else if (! strcmp (argv[i], "-print-multi-os-directory"))
3612 print_multi_os_directory = 1;
3613 else if (! strncmp (argv[i], "-Wa,", 4))
3616 /* Pass the rest of this option to the assembler. */
3618 /* Split the argument at commas. */
3620 for (j = 4; argv[i][j]; j++)
3621 if (argv[i][j] == ',')
3623 add_assembler_option (argv[i] + prev, j - prev);
3627 /* Record the part after the last comma. */
3628 add_assembler_option (argv[i] + prev, j - prev);
3630 else if (! strncmp (argv[i], "-Wp,", 4))
3633 /* Pass the rest of this option to the preprocessor. */
3635 /* Split the argument at commas. */
3637 for (j = 4; argv[i][j]; j++)
3638 if (argv[i][j] == ',')
3640 add_preprocessor_option (argv[i] + prev, j - prev);
3644 /* Record the part after the last comma. */
3645 add_preprocessor_option (argv[i] + prev, j - prev);
3647 else if (argv[i][0] == '+' && argv[i][1] == 'e')
3648 /* The +e options to the C++ front-end. */
3650 else if (strncmp (argv[i], "-Wl,", 4) == 0)
3653 /* Split the argument at commas. */
3654 for (j = 3; argv[i][j]; j++)
3655 n_infiles += (argv[i][j] == ',');
3657 else if (strcmp (argv[i], "-Xlinker") == 0)
3660 fatal ("argument to '-Xlinker' is missing");
3665 else if (strcmp (argv[i], "-Xpreprocessor") == 0)
3668 fatal ("argument to '-Xpreprocessor' is missing");
3670 add_preprocessor_option (argv[i+1], strlen (argv[i+1]));
3672 else if (strcmp (argv[i], "-Xassembler") == 0)
3675 fatal ("argument to '-Xassembler' is missing");
3677 add_assembler_option (argv[i+1], strlen (argv[i+1]));
3679 else if (strcmp (argv[i], "-l") == 0)
3682 fatal ("argument to '-l' is missing");
3687 else if (strncmp (argv[i], "-l", 2) == 0)
3689 else if (strcmp (argv[i], "-save-temps") == 0)
3691 save_temps_flag = 1;
3694 else if (strcmp (argv[i], "-combine") == 0)
3699 else if (strcmp (argv[i], "-specs") == 0)
3701 struct user_specs *user = XNEW (struct user_specs);
3703 fatal ("argument to '-specs' is missing");
3705 user->next = (struct user_specs *) 0;
3706 user->filename = argv[i];
3707 if (user_specs_tail)
3708 user_specs_tail->next = user;
3710 user_specs_head = user;
3711 user_specs_tail = user;
3713 else if (strncmp (argv[i], "-specs=", 7) == 0)
3715 struct user_specs *user = XNEW (struct user_specs);
3716 if (strlen (argv[i]) == 7)
3717 fatal ("argument to '-specs=' is missing");
3719 user->next = (struct user_specs *) 0;
3720 user->filename = argv[i] + 7;
3721 if (user_specs_tail)
3722 user_specs_tail->next = user;
3724 user_specs_head = user;
3725 user_specs_tail = user;
3727 else if (strcmp (argv[i], "-time") == 0)
3729 else if (strcmp (argv[i], "-pipe") == 0)
3731 /* -pipe has to go into the switches array as well as
3736 else if (strcmp (argv[i], "-###") == 0)
3738 /* This is similar to -v except that there is no execution
3739 of the commands and the echoed arguments are quoted. It
3740 is intended for use in shell scripts to capture the
3741 driver-generated command line. */
3742 verbose_only_flag++;
3745 else if (argv[i][0] == '-' && argv[i][1] != 0)
3747 const char *p = &argv[i][1];
3753 if (NULL == strchr(argv[i] + 2, '-')) break;
3755 fatal ("'-%c' must come at the start of the command line", c);
3763 if (p[1] == 0 && i + 1 == argc)
3764 fatal ("argument to '-B' is missing");
3770 len = strlen (value);
3772 /* Catch the case where the user has forgotten to append a
3773 directory separator to the path. Note, they may be using
3774 -B to add an executable name prefix, eg "i386-elf-", in
3775 order to distinguish between multiple installations of
3776 GCC in the same directory. Hence we must check to see
3777 if appending a directory separator actually makes a
3778 valid directory name. */
3779 if (! IS_DIR_SEPARATOR (value [len - 1])
3780 && is_directory (value, false))
3782 char *tmp = XNEWVEC (char, len + 2);
3783 strcpy (tmp, value);
3784 tmp[len] = DIR_SEPARATOR;
3789 /* As a kludge, if the arg is "[foo/]stageN/", just
3790 add "[foo/]include" to the include prefix. */
3793 && (IS_DIR_SEPARATOR (value[len - 8]))))
3794 && strncmp (value + len - 7, "stage", 5) == 0
3795 && ISDIGIT (value[len - 2])
3796 && (IS_DIR_SEPARATOR (value[len - 1])))
3799 add_prefix (&include_prefixes, "./", NULL,
3800 PREFIX_PRIORITY_B_OPT, 0, 0);
3803 char *string = xmalloc (len - 6);
3804 memcpy (string, value, len - 7);
3805 string[len - 7] = 0;
3806 add_prefix (&include_prefixes, string, NULL,
3807 PREFIX_PRIORITY_B_OPT, 0, 0);
3811 add_prefix (&exec_prefixes, value, NULL,
3812 PREFIX_PRIORITY_B_OPT, 0, 0);
3813 add_prefix (&startfile_prefixes, value, NULL,
3814 PREFIX_PRIORITY_B_OPT, 0, 0);
3815 add_prefix (&include_prefixes, value, NULL,
3816 PREFIX_PRIORITY_B_OPT, 0, 0);
3821 case 'v': /* Print our subcommands and print versions. */
3823 /* If they do anything other than exactly `-v', don't set
3824 verbose_flag; rather, continue on to give the error. */
3842 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3847 /* Forward scan, just in case -S or -c is specified
3854 if (argv[j][0] == '-')
3856 if (SWITCH_CURTAILS_COMPILATION (argv[j][1])
3862 else if ((skip = SWITCH_TAKES_ARG (argv[j][1])))
3863 j += skip - (argv[j][2] != 0);
3864 else if ((skip = WORD_SWITCH_TAKES_ARG (argv[j] + 1)))
3871 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX) || defined(HAVE_TARGET_OBJECT_SUFFIX)
3873 argv[i + 1] = convert_filename (argv[i + 1], ! have_c, 0);
3875 argv[i] = convert_filename (argv[i], ! have_c, 0);
3882 #ifdef MODIFY_TARGET_NAME
3883 is_modify_target_name = 0;
3885 for (j = 0; j < ARRAY_SIZE (modify_target); j++)
3886 if (! strcmp (argv[i], modify_target[j].sw))
3888 char *new_name = xmalloc (strlen (modify_target[j].str)
3889 + strlen (spec_machine));
3892 int made_addition = 0;
3894 is_modify_target_name = 1;
3895 for (p = spec_machine, q = new_name; *p != 0; )
3897 if (modify_target[j].add_del == DELETE
3898 && (! strncmp (q, modify_target[j].str,
3899 strlen (modify_target[j].str))))
3900 p += strlen (modify_target[j].str);
3901 else if (modify_target[j].add_del == ADD
3902 && ! made_addition && *p == '-')
3904 for (r = modify_target[j].str; *r != 0; )
3912 spec_machine = new_name;
3915 if (is_modify_target_name)
3921 if (SWITCH_TAKES_ARG (c) > (p[1] != 0))
3922 i += SWITCH_TAKES_ARG (c) - (p[1] != 0);
3923 else if (WORD_SWITCH_TAKES_ARG (p))
3924 i += WORD_SWITCH_TAKES_ARG (p);
3934 if (save_temps_flag && use_pipes)
3936 /* -save-temps overrides -pipe, so that temp files are produced */
3937 if (save_temps_flag)
3938 error ("warning: -pipe ignored because -save-temps specified");
3942 /* Set up the search paths before we go looking for config files. */
3944 /* These come before the md prefixes so that we will find gcc's subcommands
3945 (such as cpp) rather than those of the host system. */
3946 /* Use 2 as fourth arg meaning try just the machine as a suffix,
3947 as well as trying the machine and the version. */
3949 add_prefix (&exec_prefixes, standard_libexec_prefix, "GCC",
3950 PREFIX_PRIORITY_LAST, 1, 0);
3951 add_prefix (&exec_prefixes, standard_libexec_prefix, "BINUTILS",
3952 PREFIX_PRIORITY_LAST, 2, 0);
3953 add_prefix (&exec_prefixes, standard_exec_prefix, "BINUTILS",
3954 PREFIX_PRIORITY_LAST, 2, 0);
3955 add_prefix (&exec_prefixes, standard_exec_prefix_1, "BINUTILS",
3956 PREFIX_PRIORITY_LAST, 2, 0);
3957 add_prefix (&exec_prefixes, standard_exec_prefix_2, "BINUTILS",
3958 PREFIX_PRIORITY_LAST, 2, 0);
3961 add_prefix (&startfile_prefixes, standard_exec_prefix, "BINUTILS",
3962 PREFIX_PRIORITY_LAST, 1, 0);
3963 add_prefix (&startfile_prefixes, standard_exec_prefix_2, "BINUTILS",
3964 PREFIX_PRIORITY_LAST, 1, 0);
3966 tooldir_prefix = concat (tooldir_base_prefix, spec_machine,
3967 dir_separator_str, NULL);
3969 /* If tooldir is relative, base it on exec_prefixes. A relative
3970 tooldir lets us move the installed tree as a unit.
3972 If GCC_EXEC_PREFIX is defined, then we want to add two relative
3973 directories, so that we can search both the user specified directory
3974 and the standard place. */
3976 if (!IS_ABSOLUTE_PATH (tooldir_prefix))
3978 if (gcc_exec_prefix)
3980 char *gcc_exec_tooldir_prefix
3981 = concat (gcc_exec_prefix, spec_machine, dir_separator_str,
3982 spec_version, dir_separator_str, tooldir_prefix, NULL);
3984 add_prefix (&exec_prefixes,
3985 concat (gcc_exec_tooldir_prefix, "bin",
3986 dir_separator_str, NULL),
3987 NULL, PREFIX_PRIORITY_LAST, 0, 0);
3988 add_prefix (&startfile_prefixes,
3989 concat (gcc_exec_tooldir_prefix, "lib",
3990 dir_separator_str, NULL),
3991 NULL, PREFIX_PRIORITY_LAST, 0, 1);
3994 tooldir_prefix = concat (standard_exec_prefix, spec_machine,
3995 dir_separator_str, spec_version,
3996 dir_separator_str, tooldir_prefix, NULL);
3999 add_prefix (&exec_prefixes,
4000 concat (tooldir_prefix, "bin", dir_separator_str, NULL),
4001 "BINUTILS", PREFIX_PRIORITY_LAST, 0, 0);
4002 add_prefix (&startfile_prefixes,
4003 concat (tooldir_prefix, "lib", dir_separator_str, NULL),
4004 "BINUTILS", PREFIX_PRIORITY_LAST, 0, 1);
4006 #if defined(TARGET_SYSTEM_ROOT_RELOCATABLE) && !defined(VMS)
4007 /* If the normal TARGET_SYSTEM_ROOT is inside of $exec_prefix,
4008 then consider it to relocate with the rest of the GCC installation
4009 if GCC_EXEC_PREFIX is set.
4010 ``make_relative_prefix'' is not compiled for VMS, so don't call it. */
4011 if (target_system_root && gcc_exec_prefix)
4013 char *tmp_prefix = make_relative_prefix (argv[0],
4014 standard_bindir_prefix,
4015 target_system_root);
4016 if (tmp_prefix && access_check (tmp_prefix, F_OK) == 0)
4018 target_system_root = tmp_prefix;
4019 target_system_root_changed = 1;
4024 /* More prefixes are enabled in main, after we read the specs file
4025 and determine whether this is cross-compilation or not. */
4027 /* Then create the space for the vectors and scan again. */
4029 switches = XNEWVEC (struct switchstr, n_switches + 1);
4030 infiles = XNEWVEC (struct infile, n_infiles + 1);
4033 last_language_n_infiles = -1;
4035 /* This, time, copy the text of each switch and store a pointer
4036 to the copy in the vector of switches.
4037 Store all the infiles in their vector. */
4039 for (i = 1; i < argc; i++)
4041 /* Just skip the switches that were handled by the preceding loop. */
4042 #ifdef MODIFY_TARGET_NAME
4043 is_modify_target_name = 0;
4045 for (j = 0; j < ARRAY_SIZE (modify_target); j++)
4046 if (! strcmp (argv[i], modify_target[j].sw))
4047 is_modify_target_name = 1;
4049 if (is_modify_target_name)
4053 if (! strncmp (argv[i], "-Wa,", 4))
4055 else if (! strncmp (argv[i], "-Wp,", 4))
4057 else if (! strcmp (argv[i], "-pass-exit-codes"))
4059 else if (! strcmp (argv[i], "-print-search-dirs"))
4061 else if (! strcmp (argv[i], "-print-libgcc-file-name"))
4063 else if (! strncmp (argv[i], "-print-file-name=", 17))
4065 else if (! strncmp (argv[i], "-print-prog-name=", 17))
4067 else if (! strcmp (argv[i], "-print-multi-lib"))
4069 else if (! strcmp (argv[i], "-print-multi-directory"))
4071 else if (! strcmp (argv[i], "-print-multi-os-directory"))
4073 else if (! strcmp (argv[i], "-ftarget-help"))
4075 else if (! strcmp (argv[i], "-fhelp"))
4077 else if (! strncmp (argv[i], "--sysroot=", strlen ("--sysroot=")))
4079 target_system_root = argv[i] + strlen ("--sysroot=");
4080 target_system_root_changed = 1;
4082 else if (argv[i][0] == '+' && argv[i][1] == 'e')
4084 /* Compensate for the +e options to the C++ front-end;
4085 they're there simply for cfront call-compatibility. We do
4086 some magic in default_compilers to pass them down properly.
4087 Note we deliberately start at the `+' here, to avoid passing
4088 -e0 or -e1 down into the linker. */
4089 switches[n_switches].part1 = &argv[i][0];
4090 switches[n_switches].args = 0;
4091 switches[n_switches].live_cond = SWITCH_OK;
4092 switches[n_switches].validated = 0;
4095 else if (strncmp (argv[i], "-Wl,", 4) == 0)
4098 /* Split the argument at commas. */
4100 for (j = 4; argv[i][j]; j++)
4101 if (argv[i][j] == ',')
4103 infiles[n_infiles].language = "*";
4104 infiles[n_infiles++].name
4105 = save_string (argv[i] + prev, j - prev);
4108 /* Record the part after the last comma. */
4109 infiles[n_infiles].language = "*";
4110 infiles[n_infiles++].name = argv[i] + prev;
4112 else if (strcmp (argv[i], "-Xlinker") == 0)
4114 infiles[n_infiles].language = "*";
4115 infiles[n_infiles++].name = argv[++i];
4117 /* Xassembler and Xpreprocessor were already handled in the first argv
4118 scan, so all we need to do here is ignore them and their argument. */
4119 else if (strcmp (argv[i], "-Xassembler") == 0)
4121 else if (strcmp (argv[i], "-Xpreprocessor") == 0)
4123 else if (strcmp (argv[i], "-l") == 0)
4124 { /* POSIX allows separation of -l and the lib arg;
4125 canonicalize by concatenating -l with its arg */
4126 infiles[n_infiles].language = "*";
4127 infiles[n_infiles++].name = concat ("-l", argv[++i], NULL);
4129 else if (strncmp (argv[i], "-l", 2) == 0)
4131 infiles[n_infiles].language = "*";
4132 infiles[n_infiles++].name = argv[i];
4134 else if (strcmp (argv[i], "-specs") == 0)
4136 else if (strncmp (argv[i], "-specs=", 7) == 0)
4138 else if (strcmp (argv[i], "-time") == 0)
4140 else if (strcmp (argv[i], "-###") == 0)
4142 else if (argv[i][0] == '-' && argv[i][1] != 0)
4144 const char *p = &argv[i][1];
4149 if (p[1] == 0 && i + 1 == argc)
4150 fatal ("argument to '-x' is missing");
4152 spec_lang = argv[++i];
4155 if (! strcmp (spec_lang, "none"))
4156 /* Suppress the warning if -xnone comes after the last input
4157 file, because alternate command interfaces like g++ might
4158 find it useful to place -xnone after each input file. */
4161 last_language_n_infiles = n_infiles;
4164 switches[n_switches].part1 = p;
4165 /* Deal with option arguments in separate argv elements. */
4166 if ((SWITCH_TAKES_ARG (c) > (p[1] != 0))
4167 || WORD_SWITCH_TAKES_ARG (p))
4170 int n_args = WORD_SWITCH_TAKES_ARG (p);
4174 /* Count only the option arguments in separate argv elements. */
4175 n_args = SWITCH_TAKES_ARG (c) - (p[1] != 0);
4177 if (i + n_args >= argc)
4178 fatal ("argument to '-%s' is missing", p);
4179 switches[n_switches].args
4180 = XNEWVEC (const char *, n_args + 1);
4182 switches[n_switches].args[j++] = argv[++i];
4183 /* Null-terminate the vector. */
4184 switches[n_switches].args[j] = 0;
4186 else if (strchr (switches_need_spaces, c))
4188 /* On some systems, ld cannot handle some options without
4189 a space. So split the option from its argument. */
4190 char *part1 = XNEWVEC (char, 2);
4194 switches[n_switches].part1 = part1;
4195 switches[n_switches].args = XNEWVEC (const char *, 2);
4196 switches[n_switches].args[0] = xstrdup (p+1);
4197 switches[n_switches].args[1] = 0;
4200 switches[n_switches].args = 0;
4202 switches[n_switches].live_cond = SWITCH_OK;
4203 switches[n_switches].validated = 0;
4204 switches[n_switches].ordering = 0;
4205 /* These are always valid, since gcc.c itself understands them. */
4206 if (!strcmp (p, "save-temps")
4207 || !strcmp (p, "static-libgcc")
4208 || !strcmp (p, "shared-libgcc")
4209 || !strcmp (p, "pipe"))
4210 switches[n_switches].validated = 1;
4213 char ch = switches[n_switches].part1[0];
4215 switches[n_switches].validated = 1;
4221 #ifdef HAVE_TARGET_OBJECT_SUFFIX
4222 argv[i] = convert_filename (argv[i], 0, access (argv[i], F_OK));
4225 if (strcmp (argv[i], "-") != 0 && access (argv[i], F_OK) < 0)
4227 perror_with_name (argv[i]);
4232 infiles[n_infiles].language = spec_lang;
4233 infiles[n_infiles++].name = argv[i];
4238 if (n_infiles == last_language_n_infiles && spec_lang != 0)
4239 error ("warning: '-x %s' after last input file has no effect", spec_lang);
4241 /* Ensure we only invoke each subprocess once. */
4242 if (target_help_flag || print_help_list)
4246 /* Create a dummy input file, so that we can pass --target-help on to
4247 the various sub-processes. */
4248 infiles[0].language = "c";
4249 infiles[0].name = "help-dummy";
4251 if (target_help_flag)
4253 switches[n_switches].part1 = "--target-help";
4254 switches[n_switches].args = 0;
4255 switches[n_switches].live_cond = SWITCH_OK;
4256 switches[n_switches].validated = 0;
4261 if (print_help_list)
4263 switches[n_switches].part1 = "--help";
4264 switches[n_switches].args = 0;
4265 switches[n_switches].live_cond = SWITCH_OK;
4266 switches[n_switches].validated = 0;
4272 switches[n_switches].part1 = 0;
4273 infiles[n_infiles].name = 0;
4276 /* Store switches not filtered out by %<S in spec in COLLECT_GCC_OPTIONS
4277 and place that in the environment. */
4280 set_collect_gcc_options (void)
4285 /* Build COLLECT_GCC_OPTIONS to have all of the options specified to
4287 obstack_grow (&collect_obstack, "COLLECT_GCC_OPTIONS=",
4288 sizeof ("COLLECT_GCC_OPTIONS=") - 1);
4291 for (i = 0; (int) i < n_switches; i++)
4293 const char *const *args;
4296 obstack_grow (&collect_obstack, " ", 1);
4300 /* Ignore elided switches. */
4301 if (switches[i].live_cond == SWITCH_IGNORE)
4304 obstack_grow (&collect_obstack, "'-", 2);
4305 q = switches[i].part1;
4306 while ((p = strchr (q, '\'')))
4308 obstack_grow (&collect_obstack, q, p - q);
4309 obstack_grow (&collect_obstack, "'\\''", 4);
4312 obstack_grow (&collect_obstack, q, strlen (q));
4313 obstack_grow (&collect_obstack, "'", 1);
4315 for (args = switches[i].args; args && *args; args++)
4317 obstack_grow (&collect_obstack, " '", 2);
4319 while ((p = strchr (q, '\'')))
4321 obstack_grow (&collect_obstack, q, p - q);
4322 obstack_grow (&collect_obstack, "'\\''", 4);
4325 obstack_grow (&collect_obstack, q, strlen (q));
4326 obstack_grow (&collect_obstack, "'", 1);
4329 obstack_grow (&collect_obstack, "\0", 1);
4330 putenv (XOBFINISH (&collect_obstack, char *));
4333 /* Process a spec string, accumulating and running commands. */
4335 /* These variables describe the input file name.
4336 input_file_number is the index on outfiles of this file,
4337 so that the output file name can be stored for later use by %o.
4338 input_basename is the start of the part of the input file
4339 sans all directory names, and basename_length is the number
4340 of characters starting there excluding the suffix .c or whatever. */
4342 static const char *input_filename;
4343 static int input_file_number;
4344 size_t input_filename_length;
4345 static int basename_length;
4346 static int suffixed_basename_length;
4347 static const char *input_basename;
4348 static const char *input_suffix;
4349 #ifndef HOST_LACKS_INODE_NUMBERS
4350 static struct stat input_stat;
4352 static int input_stat_set;
4354 /* The compiler used to process the current input file. */
4355 static struct compiler *input_file_compiler;
4357 /* These are variables used within do_spec and do_spec_1. */
4359 /* Nonzero if an arg has been started and not yet terminated
4360 (with space, tab or newline). */
4361 static int arg_going;
4363 /* Nonzero means %d or %g has been seen; the next arg to be terminated
4364 is a temporary file name. */
4365 static int delete_this_arg;
4367 /* Nonzero means %w has been seen; the next arg to be terminated
4368 is the output file name of this compilation. */
4369 static int this_is_output_file;
4371 /* Nonzero means %s has been seen; the next arg to be terminated
4372 is the name of a library file and we should try the standard
4373 search dirs for it. */
4374 static int this_is_library_file;
4376 /* Nonzero means that the input of this command is coming from a pipe. */
4377 static int input_from_pipe;
4379 /* Nonnull means substitute this for any suffix when outputting a switches
4381 static const char *suffix_subst;
4383 /* Process the spec SPEC and run the commands specified therein.
4384 Returns 0 if the spec is successfully processed; -1 if failed. */
4387 do_spec (const char *spec)
4391 value = do_spec_2 (spec);
4393 /* Force out any unfinished command.
4394 If -pipe, this forces out the last command if it ended in `|'. */
4397 if (argbuf_index > 0 && !strcmp (argbuf[argbuf_index - 1], "|"))
4400 set_collect_gcc_options ();
4402 if (argbuf_index > 0)
4410 do_spec_2 (const char *spec)
4417 delete_this_arg = 0;
4418 this_is_output_file = 0;
4419 this_is_library_file = 0;
4420 input_from_pipe = 0;
4421 suffix_subst = NULL;
4423 result = do_spec_1 (spec, 0, NULL);
4425 /* End any pending argument. */
4428 obstack_1grow (&obstack, 0);
4429 string = XOBFINISH (&obstack, const char *);
4430 if (this_is_library_file)
4431 string = find_file (string);
4432 store_arg (string, delete_this_arg, this_is_output_file);
4433 if (this_is_output_file)
4434 outfiles[input_file_number] = string;
4442 /* Process the given spec string and add any new options to the end
4443 of the switches/n_switches array. */
4446 do_option_spec (const char *name, const char *spec)
4448 unsigned int i, value_count, value_len;
4449 const char *p, *q, *value;
4450 char *tmp_spec, *tmp_spec_p;
4452 if (configure_default_options[0].name == NULL)
4455 for (i = 0; i < ARRAY_SIZE (configure_default_options); i++)
4456 if (strcmp (configure_default_options[i].name, name) == 0)
4458 if (i == ARRAY_SIZE (configure_default_options))
4461 value = configure_default_options[i].value;
4462 value_len = strlen (value);
4464 /* Compute the size of the final spec. */
4467 while ((p = strstr (p, "%(VALUE)")) != NULL)
4473 /* Replace each %(VALUE) by the specified value. */
4474 tmp_spec = alloca (strlen (spec) + 1
4475 + value_count * (value_len - strlen ("%(VALUE)")));
4476 tmp_spec_p = tmp_spec;
4478 while ((p = strstr (q, "%(VALUE)")) != NULL)
4480 memcpy (tmp_spec_p, q, p - q);
4481 tmp_spec_p = tmp_spec_p + (p - q);
4482 memcpy (tmp_spec_p, value, value_len);
4483 tmp_spec_p += value_len;
4484 q = p + strlen ("%(VALUE)");
4486 strcpy (tmp_spec_p, q);
4488 do_self_spec (tmp_spec);
4491 /* Process the given spec string and add any new options to the end
4492 of the switches/n_switches array. */
4495 do_self_spec (const char *spec)
4498 do_spec_1 (" ", 0, NULL);
4500 if (argbuf_index > 0)
4505 n_switches += argbuf_index;
4506 switches = xrealloc (switches,
4507 sizeof (struct switchstr) * (n_switches + 1));
4509 switches[n_switches] = switches[first];
4510 for (i = 0; i < argbuf_index; i++)
4512 struct switchstr *sw;
4514 /* Each switch should start with '-'. */
4515 if (argbuf[i][0] != '-')
4516 fatal ("switch '%s' does not start with '-'", argbuf[i]);
4518 sw = &switches[i + first];
4519 sw->part1 = &argbuf[i][1];
4521 sw->live_cond = SWITCH_OK;
4528 /* Callback for processing %D and %I specs. */
4530 struct spec_path_info {
4535 bool separate_options;
4539 spec_path (char *path, void *data)
4541 struct spec_path_info *info = data;
4545 if (info->omit_relative && !IS_ABSOLUTE_PATH (path))
4548 if (info->append_len != 0)
4550 len = strlen (path);
4551 memcpy (path + len, info->append, info->append_len + 1);
4554 if (!is_directory (path, true))
4557 do_spec_1 (info->option, 1, NULL);
4558 if (info->separate_options)
4559 do_spec_1 (" ", 0, NULL);
4561 if (info->append_len == 0)
4563 len = strlen (path);
4564 save = path[len - 1];
4565 if (IS_DIR_SEPARATOR (path[len - 1]))
4566 path[len - 1] = '\0';
4569 do_spec_1 (path, 1, NULL);
4570 do_spec_1 (" ", 0, NULL);
4572 /* Must not damage the original path. */
4573 if (info->append_len == 0)
4574 path[len - 1] = save;
4579 /* Process the sub-spec SPEC as a portion of a larger spec.
4580 This is like processing a whole spec except that we do
4581 not initialize at the beginning and we do not supply a
4582 newline by default at the end.
4583 INSWITCH nonzero means don't process %-sequences in SPEC;
4584 in this case, % is treated as an ordinary character.
4585 This is used while substituting switches.
4586 INSWITCH nonzero also causes SPC not to terminate an argument.
4588 Value is zero unless a line was finished
4589 and the command on that line reported an error. */
4592 do_spec_1 (const char *spec, int inswitch, const char *soft_matched_part)
4594 const char *p = spec;
4601 /* If substituting a switch, treat all chars like letters.
4602 Otherwise, NL, SPC, TAB and % are special. */
4603 switch (inswitch ? 'a' : c)
4606 /* End of line: finish any pending argument,
4607 then run the pending command if one has been started. */
4610 obstack_1grow (&obstack, 0);
4611 string = XOBFINISH (&obstack, const char *);
4612 if (this_is_library_file)
4613 string = find_file (string);
4614 store_arg (string, delete_this_arg, this_is_output_file);
4615 if (this_is_output_file)
4616 outfiles[input_file_number] = string;
4620 if (argbuf_index > 0 && !strcmp (argbuf[argbuf_index - 1], "|"))
4622 /* A `|' before the newline means use a pipe here,
4623 but only if -pipe was specified.
4624 Otherwise, execute now and don't pass the `|' as an arg. */
4627 input_from_pipe = 1;
4634 set_collect_gcc_options ();
4636 if (argbuf_index > 0)
4642 /* Reinitialize for a new command, and for a new argument. */
4645 delete_this_arg = 0;
4646 this_is_output_file = 0;
4647 this_is_library_file = 0;
4648 input_from_pipe = 0;
4652 /* End any pending argument. */
4655 obstack_1grow (&obstack, 0);
4656 string = XOBFINISH (&obstack, const char *);
4657 if (this_is_library_file)
4658 string = find_file (string);
4659 store_arg (string, delete_this_arg, this_is_output_file);
4660 if (this_is_output_file)
4661 outfiles[input_file_number] = string;
4665 obstack_1grow (&obstack, c);
4671 /* Space or tab ends an argument if one is pending. */
4674 obstack_1grow (&obstack, 0);
4675 string = XOBFINISH (&obstack, const char *);
4676 if (this_is_library_file)
4677 string = find_file (string);
4678 store_arg (string, delete_this_arg, this_is_output_file);
4679 if (this_is_output_file)
4680 outfiles[input_file_number] = string;
4682 /* Reinitialize for a new argument. */
4684 delete_this_arg = 0;
4685 this_is_output_file = 0;
4686 this_is_library_file = 0;
4693 fatal ("spec '%s' invalid", spec);
4696 obstack_grow (&obstack, input_basename, basename_length);
4701 obstack_grow (&obstack, input_basename, suffixed_basename_length);
4706 delete_this_arg = 2;
4709 /* Dump out the directories specified with LIBRARY_PATH,
4710 followed by the absolute directories
4711 that we search for startfiles. */
4714 struct spec_path_info info;
4717 info.append_len = 0;
4718 #ifdef RELATIVE_PREFIX_NOT_LINKDIR
4719 /* Used on systems which record the specified -L dirs
4720 and use them to search for dynamic linking.
4721 Relative directories always come from -B,
4722 and it is better not to use them for searching
4723 at run time. In particular, stage1 loses. */
4724 info.omit_relative = true;
4726 info.omit_relative = false;
4728 info.separate_options = false;
4730 for_each_path (&startfile_prefixes, true, 0, spec_path, &info);
4735 /* %efoo means report an error with `foo' as error message
4736 and don't execute any more commands for this file. */
4740 while (*p != 0 && *p != '\n')
4742 buf = alloca (p - q + 1);
4743 strncpy (buf, q, p - q);
4750 /* %nfoo means report a notice with `foo' on stderr. */
4754 while (*p != 0 && *p != '\n')
4756 buf = alloca (p - q + 1);
4757 strncpy (buf, q, p - q);
4759 notice ("%s\n", buf);
4769 /* If save_temps_flag is off, and the HOST_BIT_BUCKET is
4770 defined, and it is not a directory, and it is
4771 writable, use it. Otherwise, treat this like any
4772 other temporary file. */
4774 if ((!save_temps_flag)
4775 && (stat (HOST_BIT_BUCKET, &st) == 0) && (!S_ISDIR (st.st_mode))
4776 && (access (HOST_BIT_BUCKET, W_OK) == 0))
4778 obstack_grow (&obstack, HOST_BIT_BUCKET,
4779 strlen (HOST_BIT_BUCKET));
4780 delete_this_arg = 0;
4785 goto create_temp_file;
4789 obstack_1grow (&obstack, '-');
4790 delete_this_arg = 0;
4793 /* consume suffix */
4794 while (*p == '.' || ISALNUM ((unsigned char) *p))
4796 if (p[0] == '%' && p[1] == 'O')
4801 goto create_temp_file;
4805 /* consume suffix */
4806 while (*p == '.' || ISALNUM ((unsigned char) *p))
4808 if (p[0] == '%' && p[1] == 'O')
4813 goto create_temp_file;
4819 struct temp_name *t;
4821 const char *suffix = p;
4822 char *saved_suffix = NULL;
4824 while (*p == '.' || ISALNUM ((unsigned char) *p))
4826 suffix_length = p - suffix;
4827 if (p[0] == '%' && p[1] == 'O')
4830 /* We don't support extra suffix characters after %O. */
4831 if (*p == '.' || ISALNUM ((unsigned char) *p))
4832 fatal ("spec '%s' has invalid '%%0%c'", spec, *p);
4833 if (suffix_length == 0)
4834 suffix = TARGET_OBJECT_SUFFIX;
4838 = XNEWVEC (char, suffix_length
4839 + strlen (TARGET_OBJECT_SUFFIX));
4840 strncpy (saved_suffix, suffix, suffix_length);
4841 strcpy (saved_suffix + suffix_length,
4842 TARGET_OBJECT_SUFFIX);
4844 suffix_length += strlen (TARGET_OBJECT_SUFFIX);
4847 /* If the input_filename has the same suffix specified
4848 for the %g, %u, or %U, and -save-temps is specified,
4849 we could end up using that file as an intermediate
4850 thus clobbering the user's source file (.e.g.,
4851 gcc -save-temps foo.s would clobber foo.s with the
4852 output of cpp0). So check for this condition and
4853 generate a temp file as the intermediate. */
4855 if (save_temps_flag)
4857 temp_filename_length = basename_length + suffix_length;
4858 temp_filename = alloca (temp_filename_length + 1);
4859 strncpy ((char *) temp_filename, input_basename, basename_length);
4860 strncpy ((char *) temp_filename + basename_length, suffix,
4862 *((char *) temp_filename + temp_filename_length) = '\0';
4863 if (strcmp (temp_filename, input_filename) != 0)
4865 #ifndef HOST_LACKS_INODE_NUMBERS
4866 struct stat st_temp;
4868 /* Note, set_input() resets input_stat_set to 0. */
4869 if (input_stat_set == 0)
4871 input_stat_set = stat (input_filename, &input_stat);
4872 if (input_stat_set >= 0)
4876 /* If we have the stat for the input_filename
4877 and we can do the stat for the temp_filename
4878 then the they could still refer to the same
4879 file if st_dev/st_ino's are the same. */
4880 if (input_stat_set != 1
4881 || stat (temp_filename, &st_temp) < 0
4882 || input_stat.st_dev != st_temp.st_dev
4883 || input_stat.st_ino != st_temp.st_ino)
4885 /* Just compare canonical pathnames. */
4886 char* input_realname = lrealpath (input_filename);
4887 char* temp_realname = lrealpath (temp_filename);
4888 bool files_differ = strcmp (input_realname, temp_realname);
4889 free (input_realname);
4890 free (temp_realname);
4894 temp_filename = save_string (temp_filename,
4895 temp_filename_length + 1);
4896 obstack_grow (&obstack, temp_filename,
4897 temp_filename_length);
4899 delete_this_arg = 0;
4905 /* See if we already have an association of %g/%u/%U and
4907 for (t = temp_names; t; t = t->next)
4908 if (t->length == suffix_length
4909 && strncmp (t->suffix, suffix, suffix_length) == 0
4910 && t->unique == (c == 'u' || c == 'U' || c == 'j'))
4913 /* Make a new association if needed. %u and %j
4915 if (t == 0 || c == 'u' || c == 'j')
4919 t = xmalloc (sizeof (struct temp_name));
4920 t->next = temp_names;
4923 t->length = suffix_length;
4926 t->suffix = saved_suffix;
4927 saved_suffix = NULL;
4930 t->suffix = save_string (suffix, suffix_length);
4931 t->unique = (c == 'u' || c == 'U' || c == 'j');
4932 temp_filename = make_temp_file (t->suffix);
4933 temp_filename_length = strlen (temp_filename);
4934 t->filename = temp_filename;
4935 t->filename_length = temp_filename_length;
4939 free (saved_suffix);
4941 obstack_grow (&obstack, t->filename, t->filename_length);
4942 delete_this_arg = 1;
4950 for (i = 0; (int) i < n_infiles; i++)
4951 if ((!infiles[i].language) || (infiles[i].language[0] != '*'))
4952 if (infiles[i].incompiler == input_file_compiler)
4954 store_arg (infiles[i].name, 0, 0);
4955 infiles[i].compiled = true;
4960 obstack_grow (&obstack, input_filename, input_filename_length);
4967 struct spec_path_info info;
4971 do_spec_1 ("-imultilib", 1, NULL);
4972 /* Make this a separate argument. */
4973 do_spec_1 (" ", 0, NULL);
4974 do_spec_1 (multilib_dir, 1, NULL);
4975 do_spec_1 (" ", 0, NULL);
4978 if (gcc_exec_prefix)
4980 do_spec_1 ("-iprefix", 1, NULL);
4981 /* Make this a separate argument. */
4982 do_spec_1 (" ", 0, NULL);
4983 do_spec_1 (gcc_exec_prefix, 1, NULL);
4984 do_spec_1 (" ", 0, NULL);
4987 if (target_system_root_changed ||
4988 (target_system_root && target_sysroot_hdrs_suffix))
4990 do_spec_1 ("-isysroot", 1, NULL);
4991 /* Make this a separate argument. */
4992 do_spec_1 (" ", 0, NULL);
4993 do_spec_1 (target_system_root, 1, NULL);
4994 if (target_sysroot_hdrs_suffix)
4995 do_spec_1 (target_sysroot_hdrs_suffix, 1, NULL);
4996 do_spec_1 (" ", 0, NULL);
4999 info.option = "-isystem";
5000 info.append = "include";
5001 info.append_len = strlen (info.append);
5002 info.omit_relative = false;
5003 info.separate_options = true;
5005 for_each_path (&include_prefixes, false, info.append_len,
5012 int max = n_infiles;
5013 max += lang_specific_extra_outfiles;
5015 for (i = 0; i < max; i++)
5017 store_arg (outfiles[i], 0, 0);
5022 obstack_grow (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX));
5027 this_is_library_file = 1;
5031 outfiles[input_file_number] = NULL;
5035 this_is_output_file = 1;
5040 int cur_index = argbuf_index;
5041 /* Handle the {...} following the %W. */
5043 fatal ("spec '%s' has invalid '%%W%c", spec, *p);
5044 p = handle_braces (p + 1);
5047 /* End any pending argument. */
5050 obstack_1grow (&obstack, 0);
5051 string = XOBFINISH (&obstack, const char *);
5052 if (this_is_library_file)
5053 string = find_file (string);
5054 store_arg (string, delete_this_arg, this_is_output_file);
5055 if (this_is_output_file)
5056 outfiles[input_file_number] = string;
5059 /* If any args were output, mark the last one for deletion
5061 if (argbuf_index != cur_index)
5062 record_temp_file (argbuf[argbuf_index - 1], 0, 1);
5066 /* %x{OPTION} records OPTION for %X to output. */
5072 /* Skip past the option value and make a copy. */
5074 fatal ("spec '%s' has invalid '%%x%c'", spec, *p);
5077 string = save_string (p1 + 1, p - p1 - 2);
5079 /* See if we already recorded this option. */
5080 for (i = 0; i < n_linker_options; i++)
5081 if (! strcmp (string, linker_options[i]))
5087 /* This option is new; add it. */
5088 add_linker_option (string, strlen (string));
5092 /* Dump out the options accumulated previously using %x. */
5094 for (i = 0; i < n_linker_options; i++)
5096 do_spec_1 (linker_options[i], 1, NULL);
5097 /* Make each accumulated option a separate argument. */
5098 do_spec_1 (" ", 0, NULL);
5102 /* Dump out the options accumulated previously using -Wa,. */
5104 for (i = 0; i < n_assembler_options; i++)
5106 do_spec_1 (assembler_options[i], 1, NULL);
5107 /* Make each accumulated option a separate argument. */
5108 do_spec_1 (" ", 0, NULL);
5112 /* Dump out the options accumulated previously using -Wp,. */
5114 for (i = 0; i < n_preprocessor_options; i++)
5116 do_spec_1 (preprocessor_options[i], 1, NULL);
5117 /* Make each accumulated option a separate argument. */
5118 do_spec_1 (" ", 0, NULL);
5122 /* Here are digits and numbers that just process
5123 a certain constant string as a spec. */
5126 value = do_spec_1 (cc1_spec, 0, NULL);
5132 value = do_spec_1 (cc1plus_spec, 0, NULL);
5138 value = do_spec_1 (asm_spec, 0, NULL);
5144 value = do_spec_1 (asm_final_spec, 0, NULL);
5151 const char *const spec
5152 = (input_file_compiler->cpp_spec
5153 ? input_file_compiler->cpp_spec
5155 value = do_spec_1 (spec, 0, NULL);
5162 value = do_spec_1 (endfile_spec, 0, NULL);
5168 value = do_spec_1 (link_spec, 0, NULL);
5174 value = do_spec_1 (lib_spec, 0, NULL);
5180 value = do_spec_1 (libgcc_spec, 0, NULL);
5186 /* We assume there is a directory
5187 separator at the end of this string. */
5188 if (target_system_root)
5190 obstack_grow (&obstack, target_system_root,
5191 strlen (target_system_root));
5192 if (target_sysroot_suffix)
5193 obstack_grow (&obstack, target_sysroot_suffix,
5194 strlen (target_sysroot_suffix));
5199 value = do_spec_1 (startfile_spec, 0, NULL);
5204 /* Here we define characters other than letters and digits. */
5207 p = handle_braces (p);
5213 p = handle_spec_function (p);
5219 obstack_1grow (&obstack, '%');
5226 while (p[len] && p[len] != ' ' && p[len] != '%')
5228 suffix_subst = save_string (p - 1, len + 1);
5233 /* Henceforth ignore the option(s) matching the pattern
5238 int have_wildcard = 0;
5241 while (p[len] && p[len] != ' ' && p[len] != '\t')
5244 if (p[len-1] == '*')
5247 for (i = 0; i < n_switches; i++)
5248 if (!strncmp (switches[i].part1, p, len - have_wildcard)
5249 && (have_wildcard || switches[i].part1[len] == '\0'))
5251 switches[i].live_cond = SWITCH_IGNORE;
5252 switches[i].validated = 1;
5260 if (soft_matched_part)
5262 do_spec_1 (soft_matched_part, 1, NULL);
5263 do_spec_1 (" ", 0, NULL);
5266 /* Catch the case where a spec string contains something like
5267 '%{foo:%*}'. i.e. there is no * in the pattern on the left
5268 hand side of the :. */
5269 error ("spec failure: '%%*' has not been initialized by pattern match");
5272 /* Process a string found as the value of a spec given by name.
5273 This feature allows individual machine descriptions
5274 to add and use their own specs.
5275 %[...] modifies -D options the way %P does;
5276 %(...) uses the spec unmodified. */
5278 error ("warning: use of obsolete %%[ operator in specs");
5281 const char *name = p;
5282 struct spec_list *sl;
5285 /* The string after the S/P is the name of a spec that is to be
5287 while (*p && *p != ')' && *p != ']')
5290 /* See if it's in the list. */
5291 for (len = p - name, sl = specs; sl; sl = sl->next)
5292 if (sl->name_len == len && !strncmp (sl->name, name, len))
5294 name = *(sl->ptr_spec);
5296 notice ("Processing spec %c%s%c, which is '%s'\n",
5297 c, sl->name, (c == '(') ? ')' : ']', name);
5306 value = do_spec_1 (name, 0, NULL);
5312 char *x = alloca (strlen (name) * 2 + 1);
5314 const char *y = name;
5317 /* Copy all of NAME into BUF, but put __ after
5318 every -D and at the end of each arg. */
5321 if (! strncmp (y, "-D", 2))
5332 && (*y == ' ' || *y == '\t' || *y == '='
5333 || *y == '}' || *y == 0))
5346 value = do_spec_1 (buf, 0, NULL);
5352 /* Discard the closing paren or bracket. */
5359 error ("spec failure: unrecognized spec option '%c'", c);
5365 /* Backslash: treat next character as ordinary. */
5370 /* Ordinary character: put it into the current argument. */
5371 obstack_1grow (&obstack, c);
5375 /* End of string. If we are processing a spec function, we need to
5376 end any pending argument. */
5377 if (processing_spec_function && arg_going)
5379 obstack_1grow (&obstack, 0);
5380 string = XOBFINISH (&obstack, const char *);
5381 if (this_is_library_file)
5382 string = find_file (string);
5383 store_arg (string, delete_this_arg, this_is_output_file);
5384 if (this_is_output_file)
5385 outfiles[input_file_number] = string;
5392 /* Look up a spec function. */
5394 static const struct spec_function *
5395 lookup_spec_function (const char *name)
5397 const struct spec_function *sf;
5399 for (sf = static_spec_functions; sf->name != NULL; sf++)
5400 if (strcmp (sf->name, name) == 0)
5406 /* Evaluate a spec function. */
5409 eval_spec_function (const char *func, const char *args)
5411 const struct spec_function *sf;
5412 const char *funcval;
5414 /* Saved spec processing context. */
5415 int save_argbuf_index;
5416 int save_argbuf_length;
5417 const char **save_argbuf;
5420 int save_delete_this_arg;
5421 int save_this_is_output_file;
5422 int save_this_is_library_file;
5423 int save_input_from_pipe;
5424 const char *save_suffix_subst;
5427 sf = lookup_spec_function (func);
5429 fatal ("unknown spec function '%s'", func);
5431 /* Push the spec processing context. */
5432 save_argbuf_index = argbuf_index;
5433 save_argbuf_length = argbuf_length;
5434 save_argbuf = argbuf;
5436 save_arg_going = arg_going;
5437 save_delete_this_arg = delete_this_arg;
5438 save_this_is_output_file = this_is_output_file;
5439 save_this_is_library_file = this_is_library_file;
5440 save_input_from_pipe = input_from_pipe;
5441 save_suffix_subst = suffix_subst;
5443 /* Create a new spec processing context, and build the function
5447 if (do_spec_2 (args) < 0)
5448 fatal ("error in args to spec function '%s'", func);
5450 /* argbuf_index is an index for the next argument to be inserted, and
5451 so contains the count of the args already inserted. */
5453 funcval = (*sf->func) (argbuf_index, argbuf);
5455 /* Pop the spec processing context. */
5456 argbuf_index = save_argbuf_index;
5457 argbuf_length = save_argbuf_length;
5459 argbuf = save_argbuf;
5461 arg_going = save_arg_going;
5462 delete_this_arg = save_delete_this_arg;
5463 this_is_output_file = save_this_is_output_file;
5464 this_is_library_file = save_this_is_library_file;
5465 input_from_pipe = save_input_from_pipe;
5466 suffix_subst = save_suffix_subst;
5471 /* Handle a spec function call of the form:
5475 ARGS is processed as a spec in a separate context and split into an
5476 argument vector in the normal fashion. The function returns a string
5477 containing a spec which we then process in the caller's context, or
5478 NULL if no processing is required. */
5481 handle_spec_function (const char *p)
5484 const char *endp, *funcval;
5487 processing_spec_function++;
5489 /* Get the function name. */
5490 for (endp = p; *endp != '\0'; endp++)
5492 if (*endp == '(') /* ) */
5494 /* Only allow [A-Za-z0-9], -, and _ in function names. */
5495 if (!ISALNUM (*endp) && !(*endp == '-' || *endp == '_'))
5496 fatal ("malformed spec function name");
5498 if (*endp != '(') /* ) */
5499 fatal ("no arguments for spec function");
5500 func = save_string (p, endp - p);
5503 /* Get the arguments. */
5504 for (count = 0; *endp != '\0'; endp++)
5513 else if (*endp == '(') /* ) */
5518 fatal ("malformed spec function arguments");
5519 args = save_string (p, endp - p);
5522 /* p now points to just past the end of the spec function expression. */
5524 funcval = eval_spec_function (func, args);
5525 if (funcval != NULL && do_spec_1 (funcval, 0, NULL) < 0)
5531 processing_spec_function--;
5536 /* Inline subroutine of handle_braces. Returns true if the current
5537 input suffix matches the atom bracketed by ATOM and END_ATOM. */
5539 input_suffix_matches (const char *atom, const char *end_atom)
5541 /* We special case the semantics of {.s:...} and {.S:...} and their
5542 negative variants. Instead of testing the input filename suffix,
5543 we test whether the input source file is an assembler file or an
5544 assembler-with-cpp file respectively. This allows us to correctly
5545 handle the -x command line option. */
5547 if (atom + 1 == end_atom
5548 && input_file_compiler
5549 && input_file_compiler->suffix)
5552 return !strcmp (input_file_compiler->suffix, "@assembler");
5554 return !strcmp (input_file_compiler->suffix, "@assembler-with-cpp");
5557 return (input_suffix
5558 && !strncmp (input_suffix, atom, end_atom - atom)
5559 && input_suffix[end_atom - atom] == '\0');
5562 /* Subroutine of handle_braces. Returns true if a switch
5563 matching the atom bracketed by ATOM and END_ATOM appeared on the
5566 switch_matches (const char *atom, const char *end_atom, int starred)
5569 int len = end_atom - atom;
5570 int plen = starred ? len : -1;
5572 for (i = 0; i < n_switches; i++)
5573 if (!strncmp (switches[i].part1, atom, len)
5574 && (starred || switches[i].part1[len] == '\0')
5575 && check_live_switch (i, plen))
5581 /* Inline subroutine of handle_braces. Mark all of the switches which
5582 match ATOM (extends to END_ATOM; STARRED indicates whether there
5583 was a star after the atom) for later processing. */
5585 mark_matching_switches (const char *atom, const char *end_atom, int starred)
5588 int len = end_atom - atom;
5589 int plen = starred ? len : -1;
5591 for (i = 0; i < n_switches; i++)
5592 if (!strncmp (switches[i].part1, atom, len)
5593 && (starred || switches[i].part1[len] == '\0')
5594 && check_live_switch (i, plen))
5595 switches[i].ordering = 1;
5598 /* Inline subroutine of handle_braces. Process all the currently
5599 marked switches through give_switch, and clear the marks. */
5601 process_marked_switches (void)
5605 for (i = 0; i < n_switches; i++)
5606 if (switches[i].ordering == 1)
5608 switches[i].ordering = 0;
5613 /* Handle a %{ ... } construct. P points just inside the leading {.
5614 Returns a pointer one past the end of the brace block, or 0
5615 if we call do_spec_1 and that returns -1. */
5618 handle_braces (const char *p)
5620 const char *atom, *end_atom;
5621 const char *d_atom = NULL, *d_end_atom = NULL;
5622 const char *orig = p;
5629 bool a_must_be_last = false;
5630 bool ordered_set = false;
5631 bool disjunct_set = false;
5632 bool disj_matched = false;
5633 bool disj_starred = true;
5634 bool n_way_choice = false;
5635 bool n_way_matched = false;
5637 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
5644 /* Scan one "atom" (S in the description above of %{}, possibly
5645 with !, ., or * modifiers). */
5646 a_matched = a_is_suffix = a_is_starred = a_is_negated = false;
5650 p++, a_is_negated = true;
5654 p++, a_is_suffix = true;
5657 while (ISIDNUM(*p) || *p == '-' || *p == '+' || *p == '='
5658 || *p == ',' || *p == '.' || *p == '@')
5663 p++, a_is_starred = 1;
5669 /* Substitute the switch(es) indicated by the current atom. */
5671 if (disjunct_set || n_way_choice || a_is_negated || a_is_suffix
5672 || atom == end_atom)
5675 mark_matching_switches (atom, end_atom, a_is_starred);
5678 process_marked_switches ();
5682 /* Substitute some text if the current atom appears as a switch
5684 disjunct_set = true;
5688 if (atom == end_atom)
5690 if (!n_way_choice || disj_matched || *p == '|'
5691 || a_is_negated || a_is_suffix || a_is_starred)
5694 /* An empty term may appear as the last choice of an
5695 N-way choice set; it means "otherwise". */
5696 a_must_be_last = true;
5697 disj_matched = !n_way_matched;
5698 disj_starred = false;
5702 if (a_is_suffix && a_is_starred)
5706 disj_starred = false;
5708 /* Don't bother testing this atom if we already have a
5710 if (!disj_matched && !n_way_matched)
5713 a_matched = input_suffix_matches (atom, end_atom);
5715 a_matched = switch_matches (atom, end_atom, a_is_starred);
5717 if (a_matched != a_is_negated)
5719 disj_matched = true;
5721 d_end_atom = end_atom;
5728 /* Found the body, that is, the text to substitute if the
5729 current disjunction matches. */
5730 p = process_brace_body (p + 1, d_atom, d_end_atom, disj_starred,
5731 disj_matched && !n_way_matched);
5735 /* If we have an N-way choice, reset state for the next
5739 n_way_choice = true;
5740 n_way_matched |= disj_matched;
5741 disj_matched = false;
5742 disj_starred = true;
5743 d_atom = d_end_atom = NULL;
5752 while (*p++ != '}');
5757 fatal ("braced spec '%s' is invalid at '%c'", orig, *p);
5762 /* Subroutine of handle_braces. Scan and process a brace substitution body
5763 (X in the description of %{} syntax). P points one past the colon;
5764 ATOM and END_ATOM bracket the first atom which was found to be true
5765 (present) in the current disjunction; STARRED indicates whether all
5766 the atoms in the current disjunction were starred (for syntax validation);
5767 MATCHED indicates whether the disjunction matched or not, and therefore
5768 whether or not the body is to be processed through do_spec_1 or just
5769 skipped. Returns a pointer to the closing } or ;, or 0 if do_spec_1
5773 process_brace_body (const char *p, const char *atom, const char *end_atom,
5774 int starred, int matched)
5776 const char *body, *end_body;
5777 unsigned int nesting_level;
5778 bool have_subst = false;
5780 /* Locate the closing } or ;, honoring nested braces.
5781 Trim trailing whitespace. */
5790 if (!--nesting_level)
5793 else if (*p == ';' && nesting_level == 1)
5795 else if (*p == '%' && p[1] == '*' && nesting_level == 1)
5797 else if (*p == '\0')
5803 while (end_body[-1] == ' ' || end_body[-1] == '\t')
5806 if (have_subst && !starred)
5811 /* Copy the substitution body to permanent storage and execute it.
5812 If have_subst is false, this is a simple matter of running the
5813 body through do_spec_1... */
5814 char *string = save_string (body, end_body - body);
5817 if (do_spec_1 (string, 0, NULL) < 0)
5822 /* ... but if have_subst is true, we have to process the
5823 body once for each matching switch, with %* set to the
5824 variant part of the switch. */
5825 unsigned int hard_match_len = end_atom - atom;
5828 for (i = 0; i < n_switches; i++)
5829 if (!strncmp (switches[i].part1, atom, hard_match_len)
5830 && check_live_switch (i, hard_match_len))
5832 if (do_spec_1 (string, 0,
5833 &switches[i].part1[hard_match_len]) < 0)
5835 /* Pass any arguments this switch has. */
5837 suffix_subst = NULL;
5845 fatal ("braced spec body '%s' is invalid", body);
5848 /* Return 0 iff switch number SWITCHNUM is obsoleted by a later switch
5849 on the command line. PREFIX_LENGTH is the length of XXX in an {XXX*}
5850 spec, or -1 if either exact match or %* is used.
5852 A -O switch is obsoleted by a later -O switch. A -f, -m, or -W switch
5853 whose value does not begin with "no-" is obsoleted by the same value
5854 with the "no-", similarly for a switch with the "no-" prefix. */
5857 check_live_switch (int switchnum, int prefix_length)
5859 const char *name = switches[switchnum].part1;
5862 /* In the common case of {<at-most-one-letter>*}, a negating
5863 switch would always match, so ignore that case. We will just
5864 send the conflicting switches to the compiler phase. */
5865 if (prefix_length >= 0 && prefix_length <= 1)
5868 /* If we already processed this switch and determined if it was
5869 live or not, return our past determination. */
5870 if (switches[switchnum].live_cond != 0)
5871 return switches[switchnum].live_cond > 0;
5873 /* Now search for duplicate in a manner that depends on the name. */
5877 for (i = switchnum + 1; i < n_switches; i++)
5878 if (switches[i].part1[0] == 'O')
5880 switches[switchnum].validated = 1;
5881 switches[switchnum].live_cond = SWITCH_FALSE;
5886 case 'W': case 'f': case 'm':
5887 if (! strncmp (name + 1, "no-", 3))
5889 /* We have Xno-YYY, search for XYYY. */
5890 for (i = switchnum + 1; i < n_switches; i++)
5891 if (switches[i].part1[0] == name[0]
5892 && ! strcmp (&switches[i].part1[1], &name[4]))
5894 switches[switchnum].validated = 1;
5895 switches[switchnum].live_cond = SWITCH_FALSE;
5901 /* We have XYYY, search for Xno-YYY. */
5902 for (i = switchnum + 1; i < n_switches; i++)
5903 if (switches[i].part1[0] == name[0]
5904 && switches[i].part1[1] == 'n'
5905 && switches[i].part1[2] == 'o'
5906 && switches[i].part1[3] == '-'
5907 && !strcmp (&switches[i].part1[4], &name[1]))
5909 switches[switchnum].validated = 1;
5910 switches[switchnum].live_cond = SWITCH_FALSE;
5917 /* Otherwise the switch is live. */
5918 switches[switchnum].live_cond = SWITCH_LIVE;
5922 /* Pass a switch to the current accumulating command
5923 in the same form that we received it.
5924 SWITCHNUM identifies the switch; it is an index into
5925 the vector of switches gcc received, which is `switches'.
5926 This cannot fail since it never finishes a command line.
5928 If OMIT_FIRST_WORD is nonzero, then we omit .part1 of the argument. */
5931 give_switch (int switchnum, int omit_first_word)
5933 if (switches[switchnum].live_cond == SWITCH_IGNORE)
5936 if (!omit_first_word)
5938 do_spec_1 ("-", 0, NULL);
5939 do_spec_1 (switches[switchnum].part1, 1, NULL);
5942 if (switches[switchnum].args != 0)
5945 for (p = switches[switchnum].args; *p; p++)
5947 const char *arg = *p;
5949 do_spec_1 (" ", 0, NULL);
5952 unsigned length = strlen (arg);
5955 while (length-- && !IS_DIR_SEPARATOR (arg[length]))
5956 if (arg[length] == '.')
5958 ((char *)arg)[length] = 0;
5962 do_spec_1 (arg, 1, NULL);
5964 ((char *)arg)[length] = '.';
5965 do_spec_1 (suffix_subst, 1, NULL);
5968 do_spec_1 (arg, 1, NULL);
5972 do_spec_1 (" ", 0, NULL);
5973 switches[switchnum].validated = 1;
5976 /* Search for a file named NAME trying various prefixes including the
5977 user's -B prefix and some standard ones.
5978 Return the absolute file name found. If nothing is found, return NAME. */
5981 find_file (const char *name)
5983 char *newname = find_a_file (&startfile_prefixes, name, R_OK, true);
5984 return newname ? newname : name;
5987 /* Determine whether a directory exists. If LINKER, return 0 for
5988 certain fixed names not needed by the linker. */
5991 is_directory (const char *path1, bool linker)
5998 /* Ensure the string ends with "/.". The resulting path will be a
5999 directory even if the given path is a symbolic link. */
6000 len1 = strlen (path1);
6001 path = alloca (3 + len1);
6002 memcpy (path, path1, len1);
6004 if (!IS_DIR_SEPARATOR (cp[-1]))
6005 *cp++ = DIR_SEPARATOR;
6009 /* Exclude directories that the linker is known to search. */
6011 && IS_DIR_SEPARATOR (path[0])
6013 && strncmp (path + 1, "lib", 3) == 0)
6015 && strncmp (path + 1, "usr", 3) == 0
6016 && IS_DIR_SEPARATOR (path[4])
6017 && strncmp (path + 5, "lib", 3) == 0)))
6020 return (stat (path, &st) >= 0 && S_ISDIR (st.st_mode));
6023 /* Set up the various global variables to indicate that we're processing
6024 the input file named FILENAME. */
6027 set_input (const char *filename)
6031 input_filename = filename;
6032 input_filename_length = strlen (input_filename);
6034 input_basename = input_filename;
6035 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
6036 /* Skip drive name so 'x:foo' is handled properly. */
6037 if (input_basename[1] == ':')
6038 input_basename += 2;
6040 for (p = input_basename; *p; p++)
6041 if (IS_DIR_SEPARATOR (*p))
6042 input_basename = p + 1;
6044 /* Find a suffix starting with the last period,
6045 and set basename_length to exclude that suffix. */
6046 basename_length = strlen (input_basename);
6047 suffixed_basename_length = basename_length;
6048 p = input_basename + basename_length;
6049 while (p != input_basename && *p != '.')
6051 if (*p == '.' && p != input_basename)
6053 basename_length = p - input_basename;
6054 input_suffix = p + 1;
6059 /* If a spec for 'g', 'u', or 'U' is seen with -save-temps then
6060 we will need to do a stat on the input_filename. The
6061 INPUT_STAT_SET signals that the stat is needed. */
6065 /* On fatal signals, delete all the temporary files. */
6068 fatal_error (int signum)
6070 signal (signum, SIG_DFL);
6071 delete_failure_queue ();
6072 delete_temp_files ();
6073 /* Get the same signal again, this time not handled,
6074 so its normal effect occurs. */
6075 kill (getpid (), signum);
6078 extern int main (int, char **);
6081 main (int argc, char **argv)
6085 int linker_was_run = 0;
6086 int lang_n_infiles = 0;
6087 int num_linker_inputs = 0;
6088 char *explicit_link_files;
6091 struct user_specs *uptr;
6093 p = argv[0] + strlen (argv[0]);
6094 while (p != argv[0] && !IS_DIR_SEPARATOR (p[-1]))
6098 xmalloc_set_program_name (programname);
6100 expandargv (&argc, &argv);
6102 prune_options (&argc, &argv);
6104 #ifdef GCC_DRIVER_HOST_INITIALIZATION
6105 /* Perform host dependent initialization when needed. */
6106 GCC_DRIVER_HOST_INITIALIZATION;
6109 /* Unlock the stdio streams. */
6110 unlock_std_streams ();
6112 gcc_init_libintl ();
6114 if (signal (SIGINT, SIG_IGN) != SIG_IGN)
6115 signal (SIGINT, fatal_error);
6117 if (signal (SIGHUP, SIG_IGN) != SIG_IGN)
6118 signal (SIGHUP, fatal_error);
6120 if (signal (SIGTERM, SIG_IGN) != SIG_IGN)
6121 signal (SIGTERM, fatal_error);
6123 if (signal (SIGPIPE, SIG_IGN) != SIG_IGN)
6124 signal (SIGPIPE, fatal_error);
6127 /* We *MUST* set SIGCHLD to SIG_DFL so that the wait4() call will
6128 receive the signal. A different setting is inheritable */
6129 signal (SIGCHLD, SIG_DFL);
6132 /* Allocate the argument vector. */
6135 obstack_init (&obstack);
6137 /* Build multilib_select, et. al from the separate lines that make up each
6138 multilib selection. */
6140 const char *const *q = multilib_raw;
6143 obstack_init (&multilib_obstack);
6144 while ((p = *q++) != (char *) 0)
6145 obstack_grow (&multilib_obstack, p, strlen (p));
6147 obstack_1grow (&multilib_obstack, 0);
6148 multilib_select = XOBFINISH (&multilib_obstack, const char *);
6150 q = multilib_matches_raw;
6151 while ((p = *q++) != (char *) 0)
6152 obstack_grow (&multilib_obstack, p, strlen (p));
6154 obstack_1grow (&multilib_obstack, 0);
6155 multilib_matches = XOBFINISH (&multilib_obstack, const char *);
6157 q = multilib_exclusions_raw;
6158 while ((p = *q++) != (char *) 0)
6159 obstack_grow (&multilib_obstack, p, strlen (p));
6161 obstack_1grow (&multilib_obstack, 0);
6162 multilib_exclusions = XOBFINISH (&multilib_obstack, const char *);
6165 for (i = 0; i < ARRAY_SIZE (multilib_defaults_raw); i++)
6168 obstack_1grow (&multilib_obstack, ' ');
6169 obstack_grow (&multilib_obstack,
6170 multilib_defaults_raw[i],
6171 strlen (multilib_defaults_raw[i]));
6175 obstack_1grow (&multilib_obstack, 0);
6176 multilib_defaults = XOBFINISH (&multilib_obstack, const char *);
6179 /* Set up to remember the pathname of gcc and any options
6180 needed for collect. We use argv[0] instead of programname because
6181 we need the complete pathname. */
6182 obstack_init (&collect_obstack);
6183 obstack_grow (&collect_obstack, "COLLECT_GCC=", sizeof ("COLLECT_GCC=") - 1);
6184 obstack_grow (&collect_obstack, argv[0], strlen (argv[0]) + 1);
6185 putenv (XOBFINISH (&collect_obstack, char *));
6187 #ifdef INIT_ENVIRONMENT
6188 /* Set up any other necessary machine specific environment variables. */
6189 putenv (INIT_ENVIRONMENT);
6192 /* Make a table of what switches there are (switches, n_switches).
6193 Make a table of specified input files (infiles, n_infiles).
6194 Decode switches that are handled locally. */
6196 process_command (argc, (const char **) argv);
6198 /* Initialize the vector of specs to just the default.
6199 This means one element containing 0s, as a terminator. */
6201 compilers = xmalloc (sizeof default_compilers);
6202 memcpy (compilers, default_compilers, sizeof default_compilers);
6203 n_compilers = n_default_compilers;
6205 /* Read specs from a file if there is one. */
6207 machine_suffix = concat (spec_machine, dir_separator_str,
6208 spec_version, dir_separator_str, NULL);
6209 just_machine_suffix = concat (spec_machine, dir_separator_str, NULL);
6211 specs_file = find_a_file (&startfile_prefixes, "specs", R_OK, true);
6212 /* Read the specs file unless it is a default one. */
6213 if (specs_file != 0 && strcmp (specs_file, "specs"))
6214 read_specs (specs_file, TRUE);
6218 /* We need to check standard_exec_prefix/just_machine_suffix/specs
6219 for any override of as, ld and libraries. */
6220 specs_file = alloca (strlen (standard_exec_prefix)
6221 + strlen (just_machine_suffix) + sizeof ("specs"));
6223 strcpy (specs_file, standard_exec_prefix);
6224 strcat (specs_file, just_machine_suffix);
6225 strcat (specs_file, "specs");
6226 if (access (specs_file, R_OK) == 0)
6227 read_specs (specs_file, TRUE);
6229 /* Process any configure-time defaults specified for the command line
6230 options, via OPTION_DEFAULT_SPECS. */
6231 for (i = 0; i < ARRAY_SIZE (option_default_specs); i++)
6232 do_option_spec (option_default_specs[i].name,
6233 option_default_specs[i].spec);
6235 /* Process DRIVER_SELF_SPECS, adding any new options to the end
6236 of the command line. */
6238 for (i = 0; i < ARRAY_SIZE (driver_self_specs); i++)
6239 do_self_spec (driver_self_specs[i]);
6241 /* If not cross-compiling, look for executables in the standard
6243 if (*cross_compile == '0')
6245 if (*md_exec_prefix)
6247 add_prefix (&exec_prefixes, md_exec_prefix, "GCC",
6248 PREFIX_PRIORITY_LAST, 0, 0);
6252 /* Process sysroot_suffix_spec. */
6253 if (*sysroot_suffix_spec != 0
6254 && do_spec_2 (sysroot_suffix_spec) == 0)
6256 if (argbuf_index > 1)
6257 error ("spec failure: more than one arg to SYSROOT_SUFFIX_SPEC");
6258 else if (argbuf_index == 1)
6259 target_sysroot_suffix = xstrdup (argbuf[argbuf_index -1]);
6262 #ifdef HAVE_LD_SYSROOT
6263 /* Pass the --sysroot option to the linker, if it supports that. If
6264 there is a sysroot_suffix_spec, it has already been processed by
6265 this point, so target_system_root really is the system root we
6267 if (target_system_root)
6269 obstack_grow (&obstack, "%(sysroot_spec) ", strlen ("%(sysroot_spec) "));
6270 obstack_grow0 (&obstack, link_spec, strlen (link_spec));
6271 set_spec ("link", XOBFINISH (&obstack, const char *));
6275 /* Process sysroot_hdrs_suffix_spec. */
6276 if (*sysroot_hdrs_suffix_spec != 0
6277 && do_spec_2 (sysroot_hdrs_suffix_spec) == 0)
6279 if (argbuf_index > 1)
6280 error ("spec failure: more than one arg to SYSROOT_HEADERS_SUFFIX_SPEC");
6281 else if (argbuf_index == 1)
6282 target_sysroot_hdrs_suffix = xstrdup (argbuf[argbuf_index -1]);
6285 /* Look for startfiles in the standard places. */
6286 if (*startfile_prefix_spec != 0
6287 && do_spec_2 (startfile_prefix_spec) == 0
6288 && do_spec_1 (" ", 0, NULL) == 0)
6291 for (ndx = 0; ndx < argbuf_index; ndx++)
6292 add_sysrooted_prefix (&startfile_prefixes, argbuf[ndx], "BINUTILS",
6293 PREFIX_PRIORITY_LAST, 0, 1);
6295 /* We should eventually get rid of all these and stick to
6296 startfile_prefix_spec exclusively. */
6297 else if (*cross_compile == '0' || target_system_root)
6299 if (*md_startfile_prefix)
6300 add_sysrooted_prefix (&startfile_prefixes, md_startfile_prefix,
6301 "GCC", PREFIX_PRIORITY_LAST, 0, 1);
6303 if (*md_startfile_prefix_1)
6304 add_sysrooted_prefix (&startfile_prefixes, md_startfile_prefix_1,
6305 "GCC", PREFIX_PRIORITY_LAST, 0, 1);
6307 /* If standard_startfile_prefix is relative, base it on
6308 standard_exec_prefix. This lets us move the installed tree
6309 as a unit. If GCC_EXEC_PREFIX is defined, base
6310 standard_startfile_prefix on that as well.
6312 If the prefix is relative, only search it for native compilers;
6313 otherwise we will search a directory containing host libraries. */
6314 if (IS_ABSOLUTE_PATH (standard_startfile_prefix))
6315 add_sysrooted_prefix (&startfile_prefixes,
6316 standard_startfile_prefix, "BINUTILS",
6317 PREFIX_PRIORITY_LAST, 0, 1);
6318 else if (*cross_compile == '0')
6320 if (gcc_exec_prefix)
6321 add_prefix (&startfile_prefixes,
6322 concat (gcc_exec_prefix, machine_suffix,
6323 standard_startfile_prefix, NULL),
6324 NULL, PREFIX_PRIORITY_LAST, 0, 1);
6325 add_prefix (&startfile_prefixes,
6326 concat (standard_exec_prefix,
6328 standard_startfile_prefix, NULL),
6329 NULL, PREFIX_PRIORITY_LAST, 0, 1);
6332 if (*standard_startfile_prefix_1)
6333 add_sysrooted_prefix (&startfile_prefixes,
6334 standard_startfile_prefix_1, "BINUTILS",
6335 PREFIX_PRIORITY_LAST, 0, 1);
6336 if (*standard_startfile_prefix_2)
6337 add_sysrooted_prefix (&startfile_prefixes,
6338 standard_startfile_prefix_2, "BINUTILS",
6339 PREFIX_PRIORITY_LAST, 0, 1);
6342 /* Process any user specified specs in the order given on the command
6344 for (uptr = user_specs_head; uptr; uptr = uptr->next)
6346 char *filename = find_a_file (&startfile_prefixes, uptr->filename,
6348 read_specs (filename ? filename : uptr->filename, FALSE);
6351 /* If we have a GCC_EXEC_PREFIX envvar, modify it for cpp's sake. */
6352 if (gcc_exec_prefix)
6353 gcc_exec_prefix = concat (gcc_exec_prefix, spec_machine, dir_separator_str,
6354 spec_version, dir_separator_str, NULL);
6356 /* Now we have the specs.
6357 Set the `valid' bits for switches that match anything in any spec. */
6359 validate_all_switches ();
6361 /* Now that we have the switches and the specs, set
6362 the subdirectory based on the options. */
6363 set_multilib_dir ();
6365 /* Warn about any switches that no pass was interested in. */
6367 for (i = 0; (int) i < n_switches; i++)
6368 if (! switches[i].validated)
6369 error ("unrecognized option '-%s'", switches[i].part1);
6371 /* Obey some of the options. */
6373 if (print_search_dirs)
6375 printf (_("install: %s%s\n"), standard_exec_prefix, machine_suffix);
6376 printf (_("programs: %s\n"),
6377 build_search_list (&exec_prefixes, "", false, false));
6378 printf (_("libraries: %s\n"),
6379 build_search_list (&startfile_prefixes, "", false, true));
6383 if (print_file_name)
6385 printf ("%s\n", find_file (print_file_name));
6389 if (print_prog_name)
6391 char *newname = find_a_file (&exec_prefixes, print_prog_name, X_OK, 0);
6392 printf ("%s\n", (newname ? newname : print_prog_name));
6396 if (print_multi_lib)
6398 print_multilib_info ();
6402 if (print_multi_directory)
6404 if (multilib_dir == NULL)
6407 printf ("%s\n", multilib_dir);
6411 if (print_multi_os_directory)
6413 if (multilib_os_dir == NULL)
6416 printf ("%s\n", multilib_os_dir);
6420 if (target_help_flag)
6422 /* Print if any target specific options. */
6424 /* We do not exit here. Instead we have created a fake input file
6425 called 'target-dummy' which needs to be compiled, and we pass this
6426 on to the various sub-processes, along with the --target-help
6430 if (print_help_list)
6436 printf (_("\nFor bug reporting instructions, please see:\n"));
6437 printf ("%s.\n", bug_report_url);
6442 /* We do not exit here. Instead we have created a fake input file
6443 called 'help-dummy' which needs to be compiled, and we pass this
6444 on the various sub-processes, along with the --help switch. */
6452 notice ("Target: %s\n", spec_machine);
6453 notice ("Configured with: %s\n", configuration_arguments);
6455 #ifdef THREAD_MODEL_SPEC
6456 /* We could have defined THREAD_MODEL_SPEC to "%*" by default,
6457 but there's no point in doing all this processing just to get
6458 thread_model back. */
6459 obstack_init (&obstack);
6460 do_spec_1 (THREAD_MODEL_SPEC, 0, thread_model);
6461 obstack_1grow (&obstack, '\0');
6462 thrmod = XOBFINISH (&obstack, const char *);
6464 thrmod = thread_model;
6467 notice ("Thread model: %s\n", thrmod);
6469 /* compiler_version is truncated at the first space when initialized
6470 from version string, so truncate version_string at the first space
6471 before comparing. */
6472 for (n = 0; version_string[n]; n++)
6473 if (version_string[n] == ' ')
6476 if (! strncmp (version_string, compiler_version, n)
6477 && compiler_version[n] == 0)
6478 notice ("gcc version %s\n", version_string);
6480 notice ("gcc driver version %s executing gcc version %s\n",
6481 version_string, compiler_version);
6487 if (n_infiles == added_libraries)
6488 fatal ("no input files");
6490 /* Make a place to record the compiler output file names
6491 that correspond to the input files. */
6494 i += lang_specific_extra_outfiles;
6495 outfiles = XCNEWVEC (const char *, i);
6497 /* Record which files were specified explicitly as link input. */
6499 explicit_link_files = XCNEWVEC (char, n_infiles);
6502 combine_inputs = true;
6504 combine_inputs = false;
6506 for (i = 0; (int) i < n_infiles; i++)
6508 const char *name = infiles[i].name;
6509 struct compiler *compiler = lookup_compiler (name,
6511 infiles[i].language);
6513 if (compiler && !(compiler->combinable))
6514 combine_inputs = false;
6516 if (lang_n_infiles > 0 && compiler != input_file_compiler
6517 && infiles[i].language && infiles[i].language[0] != '*')
6518 infiles[i].incompiler = compiler;
6522 input_file_compiler = compiler;
6523 infiles[i].incompiler = compiler;
6527 /* Since there is no compiler for this input file, assume it is a
6529 explicit_link_files[i] = 1;
6530 infiles[i].incompiler = NULL;
6532 infiles[i].compiled = false;
6533 infiles[i].preprocessed = false;
6536 if (!combine_inputs && have_c && have_o && lang_n_infiles > 1)
6537 fatal ("cannot specify -o with -c or -S with multiple files");
6539 if (combine_flag && save_temps_flag)
6541 bool save_combine_inputs = combine_inputs;
6542 /* Must do a separate pre-processing pass for C & Objective-C files, to
6543 obtain individual .i files. */
6545 combine_inputs = false;
6546 for (i = 0; (int) i < n_infiles; i++)
6548 int this_file_error = 0;
6550 input_file_number = i;
6551 set_input (infiles[i].name);
6552 if (infiles[i].incompiler
6553 && (infiles[i].incompiler)->needs_preprocessing)
6554 input_file_compiler = infiles[i].incompiler;
6558 if (input_file_compiler)
6560 if (input_file_compiler->spec[0] == '#')
6562 error ("%s: %s compiler not installed on this system",
6563 input_filename, &input_file_compiler->spec[1]);
6564 this_file_error = 1;
6568 value = do_spec (input_file_compiler->spec);
6569 infiles[i].preprocessed = true;
6570 if (!have_o_argbuf_index)
6571 fatal ("spec '%s' is invalid", input_file_compiler->spec);
6572 infiles[i].name = argbuf[have_o_argbuf_index];
6573 infiles[i].incompiler
6574 = lookup_compiler (infiles[i].name,
6575 strlen (infiles[i].name),
6576 infiles[i].language);
6579 this_file_error = 1;
6583 if (this_file_error)
6585 delete_failure_queue ();
6589 clear_failure_queue ();
6591 combine_inputs = save_combine_inputs;
6594 for (i = 0; (int) i < n_infiles; i++)
6596 int this_file_error = 0;
6598 /* Tell do_spec what to substitute for %i. */
6600 input_file_number = i;
6601 set_input (infiles[i].name);
6603 if (infiles[i].compiled)
6606 /* Use the same thing in %o, unless cp->spec says otherwise. */
6608 outfiles[i] = input_filename;
6610 /* Figure out which compiler from the file's suffix. */
6612 if (! combine_inputs)
6614 = lookup_compiler (infiles[i].name, input_filename_length,
6615 infiles[i].language);
6617 input_file_compiler = infiles[i].incompiler;
6619 if (input_file_compiler)
6621 /* Ok, we found an applicable compiler. Run its spec. */
6623 if (input_file_compiler->spec[0] == '#')
6625 error ("%s: %s compiler not installed on this system",
6626 input_filename, &input_file_compiler->spec[1]);
6627 this_file_error = 1;
6631 value = do_spec (input_file_compiler->spec);
6632 infiles[i].compiled = true;
6634 this_file_error = 1;
6638 /* If this file's name does not contain a recognized suffix,
6639 record it as explicit linker input. */
6642 explicit_link_files[i] = 1;
6644 /* Clear the delete-on-failure queue, deleting the files in it
6645 if this compilation failed. */
6647 if (this_file_error)
6649 delete_failure_queue ();
6652 /* If this compilation succeeded, don't delete those files later. */
6653 clear_failure_queue ();
6656 /* Reset the input file name to the first compile/object file name, for use
6657 with %b in LINK_SPEC. We use the first input file that we can find
6658 a compiler to compile it instead of using infiles.language since for
6659 languages other than C we use aliases that we then lookup later. */
6664 for (i = 0; i < n_infiles ; i++)
6665 if (infiles[i].language && infiles[i].language[0] != '*')
6667 set_input (infiles[i].name);
6672 if (error_count == 0)
6674 /* Make sure INPUT_FILE_NUMBER points to first available open
6676 input_file_number = n_infiles;
6677 if (lang_specific_pre_link ())
6681 /* Determine if there are any linker input files. */
6682 num_linker_inputs = 0;
6683 for (i = 0; (int) i < n_infiles; i++)
6684 if (explicit_link_files[i] || outfiles[i] != NULL)
6685 num_linker_inputs++;
6687 /* Run ld to link all the compiler output files. */
6689 if (num_linker_inputs > 0 && error_count == 0)
6691 int tmp = execution_count;
6693 /* We'll use ld if we can't find collect2. */
6694 if (! strcmp (linker_name_spec, "collect2"))
6696 char *s = find_a_file (&exec_prefixes, "collect2", X_OK, false);
6698 linker_name_spec = "ld";
6700 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
6702 putenv_from_prefixes (&exec_prefixes, "COMPILER_PATH", false);
6703 putenv_from_prefixes (&startfile_prefixes, LIBRARY_PATH_ENV, true);
6705 value = do_spec (link_command_spec);
6708 linker_was_run = (tmp != execution_count);
6711 /* If options said don't run linker,
6712 complain about input files to be given to the linker. */
6714 if (! linker_was_run && error_count == 0)
6715 for (i = 0; (int) i < n_infiles; i++)
6716 if (explicit_link_files[i])
6717 error ("%s: linker input file unused because linking not done",
6720 /* Delete some or all of the temporary files we made. */
6723 delete_failure_queue ();
6724 delete_temp_files ();
6726 if (print_help_list)
6728 printf (("\nFor bug reporting instructions, please see:\n"));
6729 printf ("%s\n", bug_report_url);
6732 return (signal_count != 0 ? 2
6733 : error_count > 0 ? (pass_exit_codes ? greatest_status : 1)
6737 /* Find the proper compilation spec for the file name NAME,
6738 whose length is LENGTH. LANGUAGE is the specified language,
6739 or 0 if this file is to be passed to the linker. */
6741 static struct compiler *
6742 lookup_compiler (const char *name, size_t length, const char *language)
6744 struct compiler *cp;
6746 /* If this was specified by the user to be a linker input, indicate that. */
6747 if (language != 0 && language[0] == '*')
6750 /* Otherwise, look for the language, if one is spec'd. */
6753 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6754 if (cp->suffix[0] == '@' && !strcmp (cp->suffix + 1, language))
6757 error ("language %s not recognized", language);
6761 /* Look for a suffix. */
6762 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6764 if (/* The suffix `-' matches only the file name `-'. */
6765 (!strcmp (cp->suffix, "-") && !strcmp (name, "-"))
6766 || (strlen (cp->suffix) < length
6767 /* See if the suffix matches the end of NAME. */
6768 && !strcmp (cp->suffix,
6769 name + length - strlen (cp->suffix))
6774 #if defined (OS2) ||defined (HAVE_DOS_BASED_FILE_SYSTEM)
6775 /* Look again, but case-insensitively this time. */
6777 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6779 if (/* The suffix `-' matches only the file name `-'. */
6780 (!strcmp (cp->suffix, "-") && !strcmp (name, "-"))
6781 || (strlen (cp->suffix) < length
6782 /* See if the suffix matches the end of NAME. */
6783 && ((!strcmp (cp->suffix,
6784 name + length - strlen (cp->suffix))
6785 || !strpbrk (cp->suffix, "ABCDEFGHIJKLMNOPQRSTUVWXYZ"))
6786 && !strcasecmp (cp->suffix,
6787 name + length - strlen (cp->suffix)))
6793 if (cp >= compilers)
6795 if (cp->spec[0] != '@')
6796 /* A non-alias entry: return it. */
6799 /* An alias entry maps a suffix to a language.
6800 Search for the language; pass 0 for NAME and LENGTH
6801 to avoid infinite recursion if language not found. */
6802 return lookup_compiler (NULL, 0, cp->spec + 1);
6808 save_string (const char *s, int len)
6810 char *result = XNEWVEC (char, len + 1);
6812 memcpy (result, s, len);
6818 pfatal_with_name (const char *name)
6820 perror_with_name (name);
6821 delete_temp_files ();
6826 perror_with_name (const char *name)
6828 error ("%s: %s", name, xstrerror (errno));
6831 /* Output an error message and exit. */
6834 fancy_abort (const char *file, int line, const char *func)
6836 fatal_ice ("internal gcc abort in %s, at %s:%d", func, file, line);
6839 /* Output an error message and exit. */
6842 fatal_ice (const char *cmsgid, ...)
6846 va_start (ap, cmsgid);
6848 fprintf (stderr, "%s: ", programname);
6849 vfprintf (stderr, _(cmsgid), ap);
6851 fprintf (stderr, "\n");
6852 delete_temp_files ();
6853 exit (pass_exit_codes ? ICE_EXIT_CODE : 1);
6857 fatal (const char *cmsgid, ...)
6861 va_start (ap, cmsgid);
6863 fprintf (stderr, "%s: ", programname);
6864 vfprintf (stderr, _(cmsgid), ap);
6866 fprintf (stderr, "\n");
6867 delete_temp_files ();
6871 /* The argument is actually c-format, not gcc-internal-format,
6872 but because functions with identical names are used through
6873 the rest of the compiler with gcc-internal-format, we just
6874 need to hope all users of these functions use the common
6875 subset between c-format and gcc-internal-format. */
6878 error (const char *gmsgid, ...)
6882 va_start (ap, gmsgid);
6883 fprintf (stderr, "%s: ", programname);
6884 vfprintf (stderr, _(gmsgid), ap);
6887 fprintf (stderr, "\n");
6891 notice (const char *cmsgid, ...)
6895 va_start (ap, cmsgid);
6896 vfprintf (stderr, _(cmsgid), ap);
6901 validate_switches_from_spec (const char *spec)
6903 const char *p = spec;
6906 if (c == '%' && (*p == '{' || *p == '<' || (*p == 'W' && *++p == '{')))
6907 /* We have a switch spec. */
6908 p = validate_switches (p + 1);
6912 validate_all_switches (void)
6914 struct compiler *comp;
6915 struct spec_list *spec;
6917 for (comp = compilers; comp->spec; comp++)
6918 validate_switches_from_spec (comp->spec);
6920 /* Look through the linked list of specs read from the specs file. */
6921 for (spec = specs; spec; spec = spec->next)
6922 validate_switches_from_spec (*spec->ptr_spec);
6924 validate_switches_from_spec (link_command_spec);
6927 /* Look at the switch-name that comes after START
6928 and mark as valid all supplied switches that match it. */
6931 validate_switches (const char *start)
6933 const char *p = start;
6937 bool suffix = false;
6938 bool starred = false;
6940 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
6953 while (ISIDNUM (*p) || *p == '-' || *p == '+' || *p == '='
6954 || *p == ',' || *p == '.' || *p == '@')
6959 starred = true, p++;
6965 /* Mark all matching switches as valid. */
6966 for (i = 0; i < n_switches; i++)
6967 if (!strncmp (switches[i].part1, atom, len)
6968 && (starred || switches[i].part1[len] == 0))
6969 switches[i].validated = 1;
6973 if (*p && (p[-1] == '|' || p[-1] == '&'))
6976 if (*p && p[-1] == ':')
6978 while (*p && *p != ';' && *p != '}')
6983 if (*p == '{' || *p == '<')
6984 p = validate_switches (p+1);
6985 else if (p[0] == 'W' && p[1] == '{')
6986 p = validate_switches (p+2);
6993 if (*p && p[-1] == ';')
7007 static struct mdswitchstr *mdswitches;
7008 static int n_mdswitches;
7010 /* Check whether a particular argument was used. The first time we
7011 canonicalize the switches to keep only the ones we care about. */
7014 used_arg (const char *p, int len)
7019 const char *replace;
7024 static struct mswitchstr *mswitches;
7025 static int n_mswitches;
7030 struct mswitchstr *matches;
7034 /* Break multilib_matches into the component strings of string
7035 and replacement string. */
7036 for (q = multilib_matches; *q != '\0'; q++)
7040 matches = alloca ((sizeof (struct mswitchstr)) * cnt);
7042 q = multilib_matches;
7051 fatal ("multilib spec '%s' is invalid", multilib_matches);
7055 matches[i].len = q - matches[i].str;
7057 matches[i].replace = ++q;
7058 while (*q != ';' && *q != '\0')
7061 goto invalid_matches;
7064 matches[i].rep_len = q - matches[i].replace;
7070 /* Now build a list of the replacement string for switches that we care
7071 about. Make sure we allocate at least one entry. This prevents
7072 xmalloc from calling fatal, and prevents us from re-executing this
7075 = XNEWVEC (struct mswitchstr, n_mdswitches + (n_switches ? n_switches : 1));
7076 for (i = 0; i < n_switches; i++)
7077 if (switches[i].live_cond != SWITCH_IGNORE)
7079 int xlen = strlen (switches[i].part1);
7080 for (j = 0; j < cnt; j++)
7081 if (xlen == matches[j].len
7082 && ! strncmp (switches[i].part1, matches[j].str, xlen))
7084 mswitches[n_mswitches].str = matches[j].replace;
7085 mswitches[n_mswitches].len = matches[j].rep_len;
7086 mswitches[n_mswitches].replace = (char *) 0;
7087 mswitches[n_mswitches].rep_len = 0;
7093 /* Add MULTILIB_DEFAULTS switches too, as long as they were not present
7094 on the command line nor any options mutually incompatible with
7096 for (i = 0; i < n_mdswitches; i++)
7100 for (q = multilib_options; *q != '\0'; q++)
7106 while (strncmp (q, mdswitches[i].str, mdswitches[i].len) != 0
7107 || strchr (" /", q[mdswitches[i].len]) == NULL)
7109 while (*q != ' ' && *q != '/' && *q != '\0')
7116 if (*q != ' ' && *q != '\0')
7118 while (*r != ' ' && *r != '\0')
7121 while (*q != ' ' && *q != '/' && *q != '\0')
7124 if (used_arg (r, q - r))
7129 mswitches[n_mswitches].str = mdswitches[i].str;
7130 mswitches[n_mswitches].len = mdswitches[i].len;
7131 mswitches[n_mswitches].replace = (char *) 0;
7132 mswitches[n_mswitches].rep_len = 0;
7145 for (i = 0; i < n_mswitches; i++)
7146 if (len == mswitches[i].len && ! strncmp (p, mswitches[i].str, len))
7153 default_arg (const char *p, int len)
7157 for (i = 0; i < n_mdswitches; i++)
7158 if (len == mdswitches[i].len && ! strncmp (p, mdswitches[i].str, len))
7164 /* Work out the subdirectory to use based on the options. The format of
7165 multilib_select is a list of elements. Each element is a subdirectory
7166 name followed by a list of options followed by a semicolon. The format
7167 of multilib_exclusions is the same, but without the preceding
7168 directory. First gcc will check the exclusions, if none of the options
7169 beginning with an exclamation point are present, and all of the other
7170 options are present, then we will ignore this completely. Passing
7171 that, gcc will consider each multilib_select in turn using the same
7172 rules for matching the options. If a match is found, that subdirectory
7176 set_multilib_dir (void)
7179 unsigned int this_path_len;
7180 const char *this_path, *this_arg;
7181 const char *start, *end;
7183 int ok, ndfltok, first;
7186 start = multilib_defaults;
7187 while (*start == ' ' || *start == '\t')
7189 while (*start != '\0')
7192 while (*start != ' ' && *start != '\t' && *start != '\0')
7194 while (*start == ' ' || *start == '\t')
7202 mdswitches = XNEWVEC (struct mdswitchstr, n_mdswitches);
7203 for (start = multilib_defaults; *start != '\0'; start = end + 1)
7205 while (*start == ' ' || *start == '\t')
7211 for (end = start + 1;
7212 *end != ' ' && *end != '\t' && *end != '\0'; end++)
7215 obstack_grow (&multilib_obstack, start, end - start);
7216 obstack_1grow (&multilib_obstack, 0);
7217 mdswitches[i].str = XOBFINISH (&multilib_obstack, const char *);
7218 mdswitches[i++].len = end - start;
7225 p = multilib_exclusions;
7228 /* Ignore newlines. */
7235 /* Check the arguments. */
7242 fatal ("multilib exclusions '%s' is invalid",
7243 multilib_exclusions);
7253 while (*p != ' ' && *p != ';')
7256 goto invalid_exclusions;
7260 if (*this_arg != '!')
7268 ok = used_arg (this_arg, p - this_arg);
7283 p = multilib_select;
7286 /* Ignore newlines. */
7293 /* Get the initial path. */
7300 fatal ("multilib select '%s' is invalid",
7305 this_path_len = p - this_path;
7307 /* Check the arguments. */
7314 goto invalid_select;
7323 while (*p != ' ' && *p != ';')
7326 goto invalid_select;
7330 if (*this_arg != '!')
7338 /* If this is a default argument, we can just ignore it.
7339 This is true even if this_arg begins with '!'. Beginning
7340 with '!' does not mean that this argument is necessarily
7341 inappropriate for this library: it merely means that
7342 there is a more specific library which uses this
7343 argument. If this argument is a default, we need not
7344 consider that more specific library. */
7345 ok = used_arg (this_arg, p - this_arg);
7352 if (default_arg (this_arg, p - this_arg))
7361 if (this_path_len != 1
7362 || this_path[0] != '.')
7364 char *new_multilib_dir = XNEWVEC (char, this_path_len + 1);
7367 strncpy (new_multilib_dir, this_path, this_path_len);
7368 new_multilib_dir[this_path_len] = '\0';
7369 q = strchr (new_multilib_dir, ':');
7372 multilib_dir = new_multilib_dir;
7379 const char *q = this_path, *end = this_path + this_path_len;
7381 while (q < end && *q != ':')
7385 char *new_multilib_os_dir = XNEWVEC (char, end - q);
7386 memcpy (new_multilib_os_dir, q + 1, end - q - 1);
7387 new_multilib_os_dir[end - q - 1] = '\0';
7388 multilib_os_dir = new_multilib_os_dir;
7396 if (multilib_dir == NULL && multilib_os_dir != NULL
7397 && strcmp (multilib_os_dir, ".") == 0)
7399 free ((char *) multilib_os_dir);
7400 multilib_os_dir = NULL;
7402 else if (multilib_dir != NULL && multilib_os_dir == NULL)
7403 multilib_os_dir = multilib_dir;
7406 /* Print out the multiple library subdirectory selection
7407 information. This prints out a series of lines. Each line looks
7408 like SUBDIRECTORY;@OPTION@OPTION, with as many options as is
7409 required. Only the desired options are printed out, the negative
7410 matches. The options are print without a leading dash. There are
7411 no spaces to make it easy to use the information in the shell.
7412 Each subdirectory is printed only once. This assumes the ordering
7413 generated by the genmultilib script. Also, we leave out ones that match
7417 print_multilib_info (void)
7419 const char *p = multilib_select;
7420 const char *last_path = 0, *this_path;
7422 unsigned int last_path_len = 0;
7427 /* Ignore newlines. */
7434 /* Get the initial path. */
7441 fatal ("multilib select '%s' is invalid", multilib_select);
7447 /* When --disable-multilib was used but target defines
7448 MULTILIB_OSDIRNAMES, entries starting with .: are there just
7449 to find multilib_os_dir, so skip them from output. */
7450 if (this_path[0] == '.' && this_path[1] == ':')
7453 /* Check for matches with the multilib_exclusions. We don't bother
7454 with the '!' in either list. If any of the exclusion rules match
7455 all of its options with the select rule, we skip it. */
7457 const char *e = multilib_exclusions;
7458 const char *this_arg;
7463 /* Ignore newlines. */
7470 /* Check the arguments. */
7479 fatal ("multilib exclusion '%s' is invalid",
7480 multilib_exclusions);
7491 while (*e != ' ' && *e != ';')
7494 goto invalid_exclusion;
7502 int len = e - this_arg;
7505 goto invalid_select;
7509 while (*q != ' ' && *q != ';')
7512 goto invalid_select;
7516 if (! strncmp (arg, this_arg,
7517 (len < q - arg) ? q - arg : len)
7518 || default_arg (this_arg, e - this_arg))
7548 /* If this is a duplicate, skip it. */
7549 skip = (last_path != 0
7550 && (unsigned int) (p - this_path) == last_path_len
7551 && ! strncmp (last_path, this_path, last_path_len));
7553 last_path = this_path;
7554 last_path_len = p - this_path;
7557 /* If this directory requires any default arguments, we can skip
7558 it. We will already have printed a directory identical to
7559 this one which does not require that default argument. */
7570 goto invalid_select;
7577 while (*q != ' ' && *q != ';')
7580 goto invalid_select;
7585 && default_arg (arg, q - arg))
7600 for (p1 = last_path; p1 < p && *p1 != ':'; p1++)
7611 goto invalid_select;
7619 use_arg = *p != '!';
7624 while (*p != ' ' && *p != ';')
7627 goto invalid_select;
7639 /* If there are extra options, print them now. */
7640 if (multilib_extra && *multilib_extra)
7642 int print_at = TRUE;
7645 for (q = multilib_extra; *q != '\0'; q++)
7666 /* if-exists built-in spec function.
7668 Checks to see if the file specified by the absolute pathname in
7669 ARGS exists. Returns that pathname if found.
7671 The usual use for this function is to check for a library file
7672 (whose name has been expanded with %s). */
7675 if_exists_spec_function (int argc, const char **argv)
7677 /* Must have only one argument. */
7678 if (argc == 1 && IS_ABSOLUTE_PATH (argv[0]) && ! access (argv[0], R_OK))
7684 /* if-exists-else built-in spec function.
7686 This is like if-exists, but takes an additional argument which
7687 is returned if the first argument does not exist. */
7690 if_exists_else_spec_function (int argc, const char **argv)
7692 /* Must have exactly two arguments. */
7696 if (IS_ABSOLUTE_PATH (argv[0]) && ! access (argv[0], R_OK))
7702 /* replace-outfile built-in spec function.
7704 This looks for the first argument in the outfiles array's name and
7705 replaces it with the second argument. */
7708 replace_outfile_spec_function (int argc, const char **argv)
7711 /* Must have exactly two arguments. */
7715 for (i = 0; i < n_infiles; i++)
7717 if (outfiles[i] && !strcmp (outfiles[i], argv[0]))
7718 outfiles[i] = xstrdup (argv[1]);
7723 /* Given two version numbers, compares the two numbers.
7724 A version number must match the regular expression
7725 ([1-9][0-9]*|0)(\.([1-9][0-9]*|0))*
7728 compare_version_strings (const char *v1, const char *v2)
7733 if (regcomp (&r, "^([1-9][0-9]*|0)(\\.([1-9][0-9]*|0))*$",
7734 REG_EXTENDED | REG_NOSUB) != 0)
7736 rresult = regexec (&r, v1, 0, NULL, 0);
7737 if (rresult == REG_NOMATCH)
7738 fatal ("invalid version number `%s'", v1);
7739 else if (rresult != 0)
7741 rresult = regexec (&r, v2, 0, NULL, 0);
7742 if (rresult == REG_NOMATCH)
7743 fatal ("invalid version number `%s'", v2);
7744 else if (rresult != 0)
7747 return strverscmp (v1, v2);
7751 /* version_compare built-in spec function.
7753 This takes an argument of the following form:
7755 <comparison-op> <arg1> [<arg2>] <switch> <result>
7757 and produces "result" if the comparison evaluates to true,
7758 and nothing if it doesn't.
7760 The supported <comparison-op> values are:
7762 >= true if switch is a later (or same) version than arg1
7764 < true if switch is an earlier version than arg1
7766 >< true if switch is arg1 or later, and earlier than arg2
7767 <> true if switch is earlier than arg1 or is arg2 or later
7769 If the switch is not present, the condition is false unless
7770 the first character of the <comparison-op> is '!'.
7773 %:version-compare(>= 10.3 mmacosx-version-min= -lmx)
7774 adds -lmx if -mmacosx-version-min=10.3.9 was passed. */
7777 version_compare_spec_function (int argc, const char **argv)
7781 const char *switch_value = NULL;
7786 fatal ("too few arguments to %%:version-compare");
7787 if (argv[0][0] == '\0')
7789 if ((argv[0][1] == '<' || argv[0][1] == '>') && argv[0][0] != '!')
7791 if (argc != nargs + 3)
7792 fatal ("too many arguments to %%:version-compare");
7794 switch_len = strlen (argv[nargs + 1]);
7795 for (i = 0; i < n_switches; i++)
7796 if (!strncmp (switches[i].part1, argv[nargs + 1], switch_len)
7797 && check_live_switch (i, switch_len))
7798 switch_value = switches[i].part1 + switch_len;
7800 if (switch_value == NULL)
7804 comp1 = compare_version_strings (switch_value, argv[1]);
7806 comp2 = compare_version_strings (switch_value, argv[2]);
7808 comp2 = -1; /* This value unused. */
7811 switch (argv[0][0] << 8 | argv[0][1])
7813 case '>' << 8 | '=':
7814 result = comp1 >= 0;
7816 case '!' << 8 | '<':
7817 result = comp1 >= 0 || switch_value == NULL;
7822 case '!' << 8 | '>':
7823 result = comp1 < 0 || switch_value == NULL;
7825 case '>' << 8 | '<':
7826 result = comp1 >= 0 && comp2 < 0;
7828 case '<' << 8 | '>':
7829 result = comp1 < 0 || comp2 >= 0;
7833 fatal ("unknown operator '%s' in %%:version-compare", argv[0]);
7838 return argv[nargs + 2];
7841 /* %:include builtin spec function. This differs from %include in that it
7842 can be nested inside a spec, and thus be conditionalized. It takes
7843 one argument, the filename, and looks for it in the startfile path.
7844 The result is always NULL, i.e. an empty expansion. */
7847 include_spec_function (int argc, const char **argv)
7854 file = find_a_file (&startfile_prefixes, argv[0], R_OK, 0);
7855 read_specs (file ? file : argv[0], FALSE);