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 Free Software Foundation, Inc.
5 This file is part of GCC.
7 GCC is free software; you can redistribute it and/or modify it under
8 the terms of the GNU General Public License as published by the Free
9 Software Foundation; either version 2, or (at your option) any later
12 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
13 WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
17 You should have received a copy of the GNU General Public License
18 along with GCC; see the file COPYING. If not, write to the Free
19 Software Foundation, 59 Temple Place - Suite 330, Boston, MA
22 This paragraph is here to try to keep Sun CC from dying.
23 The number of chars here seems crucial!!!! */
25 /* This program is the user interface to the C compiler and possibly to
26 other compilers. It is used because compilation is a complicated procedure
27 which involves running several programs and passing temporary files between
28 them, forwarding the users switches to those programs selectively,
29 and deleting the temporary files at the end.
31 CC recognizes how to compile each input file by suffixes in the file names.
32 Once it knows which kind of compilation to perform, the procedure for
33 compilation is specified by a string called a "spec". */
35 /* A Short Introduction to Adding a Command-Line Option.
37 Before adding a command-line option, consider if it is really
38 necessary. Each additional command-line option adds complexity and
39 is difficult to remove in subsequent versions.
41 In the following, consider adding the command-line argument
44 1. Each command-line option is specified in the specs file. The
45 notation is described below in the comment entitled "The Specs
48 2. In this file, add an entry to "option_map" equating the long
49 `--' argument version and any shorter, single letter version. Read
50 the comments in the declaration of "struct option_map" for an
51 explanation. Do not omit the first `-'.
53 3. Look in the "specs" file to determine which program or option
54 list should be given the argument, e.g., "cc1_options". Add the
55 appropriate syntax for the shorter option version to the
56 corresponding "const char *" entry in this file. Omit the first
57 `-' from the option. For example, use `-bar', rather than `--bar'.
59 4. If the argument takes an argument, e.g., `--baz argument1',
60 modify either DEFAULT_SWITCH_TAKES_ARG or
61 DEFAULT_WORD_SWITCH_TAKES_ARG in this file. Omit the first `-'
64 5. Document the option in this file's display_help(). If the
65 option is passed to a subprogram, modify its corresponding
66 function, e.g., cppinit.c:print_help() or toplev.c:display_help(),
69 6. Compile and test. Make sure that your new specs file is being
70 read. For example, use a debugger to investigate the value of
71 "specs_file" in main(). */
75 #include "coretypes.h"
78 #if ! defined( SIGCHLD ) && defined( SIGCLD )
79 # define SIGCHLD SIGCLD
87 #ifdef HAVE_SYS_RESOURCE_H
88 #include <sys/resource.h>
90 #if defined (HAVE_DECL_GETRUSAGE) && !HAVE_DECL_GETRUSAGE
91 extern int getrusage PARAMS ((int, struct rusage *));
94 /* By default there is no special suffix for target executables. */
95 /* FIXME: when autoconf is fixed, remove the host check - dj */
96 #if defined(TARGET_EXECUTABLE_SUFFIX) && defined(HOST_EXECUTABLE_SUFFIX)
97 #define HAVE_TARGET_EXECUTABLE_SUFFIX
100 /* By default there is no special suffix for host executables. */
101 #ifdef HOST_EXECUTABLE_SUFFIX
102 #define HAVE_HOST_EXECUTABLE_SUFFIX
104 #define HOST_EXECUTABLE_SUFFIX ""
107 /* By default, the suffix for target object files is ".o". */
108 #ifdef TARGET_OBJECT_SUFFIX
109 #define HAVE_TARGET_OBJECT_SUFFIX
111 #define TARGET_OBJECT_SUFFIX ".o"
115 /* FIXME: the location independence code for VMS is hairier than this,
116 and hasn't been written. */
122 static const char dir_separator_str[] = { DIR_SEPARATOR, 0 };
124 /* Most every one is fine with LIBRARY_PATH. For some, it conflicts. */
125 #ifndef LIBRARY_PATH_ENV
126 #define LIBRARY_PATH_ENV "LIBRARY_PATH"
130 #define kill(p,s) raise(s)
133 /* If a stage of compilation returns an exit status >= 1,
134 compilation of that file ceases. */
136 #define MIN_FATAL_STATUS 1
138 /* Flag set by cppspec.c to 1. */
141 /* Flag saying to pass the greatest exit code returned by a sub-process
142 to the calling program. */
143 static int pass_exit_codes;
145 /* Definition of string containing the arguments given to configure. */
146 #include "configargs.h"
148 /* Flag saying to print the directories gcc will search through looking for
149 programs, libraries, etc. */
151 static int print_search_dirs;
153 /* Flag saying to print the full filename of this file
154 as found through our usual search mechanism. */
156 static const char *print_file_name = NULL;
158 /* As print_file_name, but search for executable file. */
160 static const char *print_prog_name = NULL;
162 /* Flag saying to print the relative path we'd use to
163 find libgcc.a given the current compiler flags. */
165 static int print_multi_directory;
167 /* Flag saying to print the relative path we'd use to
168 find OS libraries given the current compiler flags. */
170 static int print_multi_os_directory;
172 /* Flag saying to print the list of subdirectories and
173 compiler flags used to select them in a standard form. */
175 static int print_multi_lib;
177 /* Flag saying to print the command line options understood by gcc and its
180 static int print_help_list;
182 /* Flag indicating whether we should print the command and arguments */
184 static int verbose_flag;
186 /* Flag indicating whether we should ONLY print the command and
187 arguments (like verbose_flag) without executing the command.
188 Displayed arguments are quoted so that the generated command
189 line is suitable for execution. This is intended for use in
190 shell scripts to capture the driver-generated command line. */
191 static int verbose_only_flag;
193 /* Flag indicating to print target specific command line options. */
195 static int target_help_flag;
197 /* Flag indicating whether we should report subprocess execution times
198 (if this is supported by the system - see pexecute.c). */
200 static int report_times;
202 /* Nonzero means place this string before uses of /, so that include
203 and library files can be found in an alternate location. */
205 static const char *target_system_root = TARGET_SYSTEM_ROOT;
207 /* Nonzero means write "temp" files in source directory
208 and use the source file's name in them, and don't delete them. */
210 static int save_temps_flag;
212 /* Nonzero means use pipes to communicate between subprocesses.
213 Overridden by either of the above two flags. */
215 static int use_pipes;
217 /* The compiler version. */
219 static const char *compiler_version;
221 /* The target version specified with -V */
223 static const char *const spec_version = DEFAULT_TARGET_VERSION;
225 /* The target machine specified with -b. */
227 static const char *spec_machine = DEFAULT_TARGET_MACHINE;
229 /* Nonzero if cross-compiling.
230 When -b is used, the value comes from the `specs' file. */
233 static const char *cross_compile = "1";
235 static const char *cross_compile = "0";
238 #ifdef MODIFY_TARGET_NAME
240 /* Information on how to alter the target name based on a command-line
241 switch. The only case we support now is simply appending or deleting a
242 string to or from the end of the first part of the configuration name. */
244 static const struct modify_target
246 const char *const sw;
247 const enum add_del {ADD, DELETE} add_del;
248 const char *const str;
250 modify_target[] = MODIFY_TARGET_NAME;
253 /* The number of errors that have occurred; the link phase will not be
254 run if this is nonzero. */
255 static int error_count = 0;
257 /* Greatest exit code of sub-processes that has been encountered up to
259 static int greatest_status = 1;
261 /* This is the obstack which we use to allocate many strings. */
263 static struct obstack obstack;
265 /* This is the obstack to build an environment variable to pass to
266 collect2 that describes all of the relevant switches of what to
267 pass the compiler in building the list of pointers to constructors
270 static struct obstack collect_obstack;
272 /* These structs are used to collect resource usage information for
274 #ifdef HAVE_GETRUSAGE
275 static struct rusage rus, prus;
278 /* Forward declaration for prototypes. */
281 static void init_spec PARAMS ((void));
282 static void store_arg PARAMS ((const char *, int, int));
283 static char *load_specs PARAMS ((const char *));
284 static void read_specs PARAMS ((const char *, int));
285 static void set_spec PARAMS ((const char *, const char *));
286 static struct compiler *lookup_compiler PARAMS ((const char *, size_t, const char *));
287 static char *build_search_list PARAMS ((struct path_prefix *, const char *, int));
288 static void putenv_from_prefixes PARAMS ((struct path_prefix *, const char *));
289 static int access_check PARAMS ((const char *, int));
290 static char *find_a_file PARAMS ((struct path_prefix *, const char *,
292 static void add_prefix PARAMS ((struct path_prefix *, const char *,
293 const char *, int, int, int *, int));
294 static void add_sysrooted_prefix PARAMS ((struct path_prefix *, const char *,
295 const char *, int, int, int *, int));
296 static void translate_options PARAMS ((int *, const char *const **));
297 static char *skip_whitespace PARAMS ((char *));
298 static void delete_if_ordinary PARAMS ((const char *));
299 static void delete_temp_files PARAMS ((void));
300 static void delete_failure_queue PARAMS ((void));
301 static void clear_failure_queue PARAMS ((void));
302 static int check_live_switch PARAMS ((int, int));
303 static const char *handle_braces PARAMS ((const char *));
304 static inline bool input_suffix_matches PARAMS ((const char *,
306 static inline bool switch_matches PARAMS ((const char *,
308 static inline void mark_matching_switches PARAMS ((const char *,
310 static inline void process_marked_switches PARAMS ((void));
311 static const char *process_brace_body PARAMS ((const char *, const char *,
312 const char *, int, int));
313 static const struct spec_function *lookup_spec_function PARAMS ((const char *));
314 static const char *eval_spec_function PARAMS ((const char *, const char *));
315 static const char *handle_spec_function PARAMS ((const char *));
316 static char *save_string PARAMS ((const char *, int));
317 static void set_collect_gcc_options PARAMS ((void));
318 static int do_spec_1 PARAMS ((const char *, int, const char *));
319 static int do_spec_2 PARAMS ((const char *));
320 static void do_self_spec PARAMS ((const char *));
321 static const char *find_file PARAMS ((const char *));
322 static int is_directory PARAMS ((const char *, const char *, int));
323 static const char *validate_switches PARAMS ((const char *));
324 static void validate_all_switches PARAMS ((void));
325 static inline void validate_switches_from_spec PARAMS ((const char *));
326 static void give_switch PARAMS ((int, int));
327 static int used_arg PARAMS ((const char *, int));
328 static int default_arg PARAMS ((const char *, int));
329 static void set_multilib_dir PARAMS ((void));
330 static void print_multilib_info PARAMS ((void));
331 static void perror_with_name PARAMS ((const char *));
332 static void pfatal_pexecute PARAMS ((const char *, const char *))
334 static void notice PARAMS ((const char *, ...))
336 static void display_help PARAMS ((void));
337 static void add_preprocessor_option PARAMS ((const char *, int));
338 static void add_assembler_option PARAMS ((const char *, int));
339 static void add_linker_option PARAMS ((const char *, int));
340 static void process_command PARAMS ((int, const char *const *));
341 static int execute PARAMS ((void));
342 static void alloc_args PARAMS ((void));
343 static void clear_args PARAMS ((void));
344 static void fatal_error PARAMS ((int));
345 #ifdef ENABLE_SHARED_LIBGCC
346 static void init_gcc_specs PARAMS ((struct obstack *,
347 const char *, const char *,
350 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
351 static const char *convert_filename PARAMS ((const char *, int, int));
354 static const char *if_exists_spec_function PARAMS ((int, const char **));
355 static const char *if_exists_else_spec_function PARAMS ((int, const char **));
357 /* The Specs Language
359 Specs are strings containing lines, each of which (if not blank)
360 is made up of a program name, and arguments separated by spaces.
361 The program name must be exact and start from root, since no path
362 is searched and it is unreliable to depend on the current working directory.
363 Redirection of input or output is not supported; the subprograms must
364 accept filenames saying what files to read and write.
366 In addition, the specs can contain %-sequences to substitute variable text
367 or for conditional text. Here is a table of all defined %-sequences.
368 Note that spaces are not generated automatically around the results of
369 expanding these sequences; therefore, you can concatenate them together
370 or with constant text in a single argument.
372 %% substitute one % into the program name or argument.
373 %i substitute the name of the input file being processed.
374 %b substitute the basename of the input file being processed.
375 This is the substring up to (and not including) the last period
376 and not including the directory.
377 %B same as %b, but include the file suffix (text after the last period).
379 substitute a file name that has suffix SUFFIX and is chosen
380 once per compilation, and mark the argument a la %d. To reduce
381 exposure to denial-of-service attacks, the file name is now
382 chosen in a way that is hard to predict even when previously
383 chosen file names are known. For example, `%g.s ... %g.o ... %g.s'
384 might turn into `ccUVUUAU.s ccXYAXZ12.o ccUVUUAU.s'. SUFFIX matches
385 the regexp "[.A-Za-z]*%O"; "%O" is treated exactly as if it
386 had been pre-processed. Previously, %g was simply substituted
387 with a file name chosen once per compilation, without regard
388 to any appended suffix (which was therefore treated just like
389 ordinary text), making such attacks more likely to succeed.
391 like %g, but if -pipe is in effect, expands simply to "-".
393 like %g, but if -pipe is in effect, expands to nothing. (We have both
394 %| and %m to accommodate differences between system assemblers; see
395 the AS_NEEDS_DASH_FOR_PIPED_INPUT target macro.)
397 like %g, but generates a new temporary file name even if %uSUFFIX
400 substitutes the last file name generated with %uSUFFIX, generating a
401 new one if there is no such last file name. In the absence of any
402 %uSUFFIX, this is just like %gSUFFIX, except they don't share
403 the same suffix "space", so `%g.s ... %U.s ... %g.s ... %U.s'
404 would involve the generation of two distinct file names, one
405 for each `%g.s' and another for each `%U.s'. Previously, %U was
406 simply substituted with a file name chosen for the previous %u,
407 without regard to any appended suffix.
409 substitutes the name of the HOST_BIT_BUCKET, if any, and if it is
410 writable, and if save-temps is off; otherwise, substitute the name
411 of a temporary file, just like %u. This temporary file is not
412 meant for communication between processes, but rather as a junk
415 substitutes .SUFFIX for the suffixes of a matched switch's args when
416 it is subsequently output with %*. SUFFIX is terminated by the next
418 %d marks the argument containing or following the %d as a
419 temporary file name, so that that file will be deleted if CC exits
420 successfully. Unlike %g, this contributes no text to the argument.
421 %w marks the argument containing or following the %w as the
422 "output file" of this compilation. This puts the argument
423 into the sequence of arguments that %o will substitute later.
424 %V indicates that this compilation produces no "output file".
426 like %{...} but mark last argument supplied within
427 as a file to be deleted on failure.
428 %o substitutes the names of all the output files, with spaces
429 automatically placed around them. You should write spaces
430 around the %o as well or the results are undefined.
431 %o is for use in the specs for running the linker.
432 Input files whose names have no recognized suffix are not compiled
433 at all, but they are included among the output files, so they will
435 %O substitutes the suffix for object files. Note that this is
436 handled specially when it immediately follows %g, %u, or %U
437 (with or without a suffix argument) because of the need for
438 those to form complete file names. The handling is such that
439 %O is treated exactly as if it had already been substituted,
440 except that %g, %u, and %U do not currently support additional
441 SUFFIX characters following %O as they would following, for
443 %p substitutes the standard macro predefinitions for the
444 current target machine. Use this when running cpp.
445 %P like %p, but puts `__' before and after the name of each macro.
446 (Except macros that already have __.)
448 %I Substitute a -iprefix option made from GCC_EXEC_PREFIX.
449 %s current argument is the name of a library or startup file of some sort.
450 Search for that file in a standard list of directories
451 and substitute the full name found.
452 %eSTR Print STR as an error message. STR is terminated by a newline.
453 Use this when inconsistent options are detected.
454 %nSTR Print STR as a notice. STR is terminated by a newline.
455 %x{OPTION} Accumulate an option for %X.
456 %X Output the accumulated linker options specified by compilations.
457 %Y Output the accumulated assembler options specified by compilations.
458 %Z Output the accumulated preprocessor options specified by compilations.
459 %v1 Substitute the major version number of GCC.
460 (For version 2.5.3, this is 2.)
461 %v2 Substitute the minor version number of GCC.
462 (For version 2.5.3, this is 5.)
463 %v3 Substitute the patch level number of GCC.
464 (For version 2.5.3, this is 3.)
465 %a process ASM_SPEC as a spec.
466 This allows config.h to specify part of the spec for running as.
467 %A process ASM_FINAL_SPEC as a spec. A capital A is actually
468 used here. This can be used to run a post-processor after the
469 assembler has done its job.
470 %D Dump out a -L option for each directory in startfile_prefixes.
471 If multilib_dir is set, extra entries are generated with it affixed.
472 %l process LINK_SPEC as a spec.
473 %L process LIB_SPEC as a spec.
474 %G process LIBGCC_SPEC as a spec.
475 %M output multilib_dir with directory separators replaced with "_";
476 if multilib_dir is not set or is ".", output "".
477 %S process STARTFILE_SPEC as a spec. A capital S is actually used here.
478 %E process ENDFILE_SPEC as a spec. A capital E is actually used here.
479 %C process CPP_SPEC as a spec.
480 %1 process CC1_SPEC as a spec.
481 %2 process CC1PLUS_SPEC as a spec.
482 %* substitute the variable part of a matched option. (See below.)
483 Note that each comma in the substituted string is replaced by
485 %<S remove all occurrences of -S from the command line.
486 Note - this command is position dependent. % commands in the
487 spec string before this one will see -S, % commands in the
488 spec string after this one will not.
489 %<S* remove all occurrences of all switches beginning with -S from the
492 Call the named function FUNCTION, passing it ARGS. ARGS is
493 first processed as a nested spec string, then split into an
494 argument vector in the usual fashion. The function returns
495 a string which is processed as if it had appeared literally
496 as part of the current spec.
497 %{S} substitutes the -S switch, if that switch was given to CC.
498 If that switch was not specified, this substitutes nothing.
499 Here S is a metasyntactic variable.
500 %{S*} substitutes all the switches specified to CC whose names start
501 with -S. This is used for -o, -I, etc; switches that take
502 arguments. CC considers `-o foo' as being one switch whose
503 name starts with `o'. %{o*} would substitute this text,
504 including the space; thus, two arguments would be generated.
505 %{S*&T*} likewise, but preserve order of S and T options (the order
506 of S and T in the spec is not significant). Can be any number
507 of ampersand-separated variables; for each the wild card is
508 optional. Useful for CPP as %{D*&U*&A*}.
510 %{S:X} substitutes X, if the -S switch was given to CC.
511 %{!S:X} substitutes X, if the -S switch was NOT given to CC.
512 %{S*:X} substitutes X if one or more switches whose names start
513 with -S was given to CC. Normally X is substituted only
514 once, no matter how many such switches appeared. However,
515 if %* appears somewhere in X, then X will be substituted
516 once for each matching switch, with the %* replaced by the
517 part of that switch that matched the '*'.
518 %{.S:X} substitutes X, if processing a file with suffix S.
519 %{!.S:X} substitutes X, if NOT processing a file with suffix S.
521 %{S|T:X} substitutes X if either -S or -T was given to CC. This may be
522 combined with !, ., and * as above binding stronger than the OR.
523 If %* appears in X, all of the alternatives must be starred, and
524 only the first matching alternative is substituted.
525 %{S:X; if S was given to CC, substitutes X;
526 T:Y; else if T was given to CC, substitutes Y;
527 :D} else substitutes D. There can be as many clauses as you need.
528 This may be combined with ., !, |, and * as above.
530 %(Spec) processes a specification defined in a specs file as *Spec:
531 %[Spec] as above, but put __ around -D arguments
533 The conditional text X in a %{S:X} or similar construct may contain
534 other nested % constructs or spaces, or even newlines. They are
535 processed as usual, as described above. Trailing white space in X is
536 ignored. White space may also appear anywhere on the left side of the
537 colon in these constructs, except between . or * and the corresponding
540 The -O, -f, -m, and -W switches are handled specifically in these
541 constructs. If another value of -O or the negated form of a -f, -m, or
542 -W switch is found later in the command line, the earlier switch
543 value is ignored, except with {S*} where S is just one letter; this
544 passes all matching options.
546 The character | at the beginning of the predicate text is used to indicate
547 that a command should be piped to the following command, but only if -pipe
550 Note that it is built into CC which switches take arguments and which
551 do not. You might think it would be useful to generalize this to
552 allow each compiler's spec to say which switches take arguments. But
553 this cannot be done in a consistent fashion. CC cannot even decide
554 which input files have been specified without knowing which switches
555 take arguments, and it must know which input files to compile in order
556 to tell which compilers to run.
558 CC also knows implicitly that arguments starting in `-l' are to be
559 treated as compiler output files, and passed to the linker in their
560 proper position among the other output files. */
562 /* Define the macros used for specs %a, %l, %L, %S, %C, %1. */
564 /* config.h can define ASM_SPEC to provide extra args to the assembler
565 or extra switch-translations. */
570 /* config.h can define ASM_FINAL_SPEC to run a post processor after
571 the assembler has run. */
572 #ifndef ASM_FINAL_SPEC
573 #define ASM_FINAL_SPEC ""
576 /* config.h can define CPP_SPEC to provide extra args to the C preprocessor
577 or extra switch-translations. */
582 /* config.h can define CC1_SPEC to provide extra args to cc1 and cc1plus
583 or extra switch-translations. */
588 /* config.h can define CC1PLUS_SPEC to provide extra args to cc1plus
589 or extra switch-translations. */
591 #define CC1PLUS_SPEC ""
594 /* config.h can define LINK_SPEC to provide extra args to the linker
595 or extra switch-translations. */
600 /* config.h can define LIB_SPEC to override the default libraries. */
602 #define LIB_SPEC "%{!shared:%{g*:-lg} %{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p}}"
605 /* config.h can define LIBGCC_SPEC to override how and when libgcc.a is
608 #if defined(LINK_LIBGCC_SPECIAL) || defined(LINK_LIBGCC_SPECIAL_1)
609 /* Have gcc do the search for libgcc.a. */
610 #define LIBGCC_SPEC "libgcc.a%s"
612 #define LIBGCC_SPEC "-lgcc"
616 /* config.h can define STARTFILE_SPEC to override the default crt0 files. */
617 #ifndef STARTFILE_SPEC
618 #define STARTFILE_SPEC \
619 "%{!shared:%{pg:gcrt0%O%s}%{!pg:%{p:mcrt0%O%s}%{!p:crt0%O%s}}}"
622 /* config.h can define SWITCHES_NEED_SPACES to control which options
623 require spaces between the option and the argument. */
624 #ifndef SWITCHES_NEED_SPACES
625 #define SWITCHES_NEED_SPACES ""
628 /* config.h can define ENDFILE_SPEC to override the default crtn files. */
630 #define ENDFILE_SPEC ""
634 #define LINKER_NAME "collect2"
637 /* Define ASM_DEBUG_SPEC to be a spec suitable for translating '-g'
639 #ifndef ASM_DEBUG_SPEC
640 # if defined(DBX_DEBUGGING_INFO) && defined(DWARF2_DEBUGGING_INFO) \
641 && defined(HAVE_AS_GDWARF2_DEBUG_FLAG) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
642 # define ASM_DEBUG_SPEC \
643 (PREFERRED_DEBUGGING_TYPE == DBX_DEBUG \
644 ? "%{gdwarf-2*:--gdwarf2}%{!gdwarf-2*:%{g*:--gstabs}}" \
645 : "%{gstabs*:--gstabs}%{!gstabs*:%{g*:--gdwarf2}}")
647 # if defined(DBX_DEBUGGING_INFO) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
648 # define ASM_DEBUG_SPEC "%{g*:--gstabs}"
650 # if defined(DWARF2_DEBUGGING_INFO) && defined(HAVE_AS_GDWARF2_DEBUG_FLAG)
651 # define ASM_DEBUG_SPEC "%{g*:--gdwarf2}"
655 #ifndef ASM_DEBUG_SPEC
656 # define ASM_DEBUG_SPEC ""
659 /* Here is the spec for running the linker, after compiling all files. */
661 /* This is overridable by the target in case they need to specify the
662 -lgcc and -lc order specially, yet not require them to override all
663 of LINK_COMMAND_SPEC. */
664 #ifndef LINK_GCC_C_SEQUENCE_SPEC
665 #define LINK_GCC_C_SEQUENCE_SPEC "%G %L %G"
668 /* -u* was put back because both BSD and SysV seem to support it. */
669 /* %{static:} simply prevents an error message if the target machine
670 doesn't handle -static. */
671 /* We want %{T*} after %{L*} and %D so that it can be used to specify linker
672 scripts which exist in user specified directories, or in standard
674 #ifndef LINK_COMMAND_SPEC
675 #define LINK_COMMAND_SPEC "\
676 %{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:\
677 %(linker) %l %X %{o*} %{A} %{d} %{e*} %{m} %{N} %{n} %{r} %{s} %{t}\
678 %{u*} %{x} %{z} %{Z} %{!A:%{!nostdlib:%{!nostartfiles:%S}}}\
679 %{static:} %{L*} %(link_libgcc) %o %{fprofile-arcs:-lgcov}\
680 %{!nostdlib:%{!nodefaultlibs:%(link_gcc_c_sequence)}}\
681 %{!A:%{!nostdlib:%{!nostartfiles:%E}}} %{T*} }}}}}}"
684 #ifndef LINK_LIBGCC_SPEC
685 # ifdef LINK_LIBGCC_SPECIAL
686 /* Don't generate -L options for startfile prefix list. */
687 # define LINK_LIBGCC_SPEC ""
689 /* Do generate them. */
690 # define LINK_LIBGCC_SPEC "%D"
694 #ifndef STARTFILE_PREFIX_SPEC
695 # define STARTFILE_PREFIX_SPEC ""
698 static const char *asm_debug;
699 static const char *cpp_spec = CPP_SPEC;
700 static const char *cpp_predefines = CPP_PREDEFINES;
701 static const char *cc1_spec = CC1_SPEC;
702 static const char *cc1plus_spec = CC1PLUS_SPEC;
703 static const char *link_gcc_c_sequence_spec = LINK_GCC_C_SEQUENCE_SPEC;
704 static const char *asm_spec = ASM_SPEC;
705 static const char *asm_final_spec = ASM_FINAL_SPEC;
706 static const char *link_spec = LINK_SPEC;
707 static const char *lib_spec = LIB_SPEC;
708 static const char *libgcc_spec = LIBGCC_SPEC;
709 static const char *endfile_spec = ENDFILE_SPEC;
710 static const char *startfile_spec = STARTFILE_SPEC;
711 static const char *switches_need_spaces = SWITCHES_NEED_SPACES;
712 static const char *linker_name_spec = LINKER_NAME;
713 static const char *link_command_spec = LINK_COMMAND_SPEC;
714 static const char *link_libgcc_spec = LINK_LIBGCC_SPEC;
715 static const char *startfile_prefix_spec = STARTFILE_PREFIX_SPEC;
717 /* Standard options to cpp, cc1, and as, to reduce duplication in specs.
718 There should be no need to override these in target dependent files,
719 but we need to copy them to the specs file so that newer versions
720 of the GCC driver can correctly drive older tool chains with the
721 appropriate -B options. */
723 /* When cpplib handles traditional preprocessing, get rid of this, and
724 call cc1 (or cc1obj in objc/lang-specs.h) from the main specs so
725 that we default the front end language better. */
726 static const char *trad_capable_cpp =
727 "cc1 -E %{traditional|ftraditional|traditional-cpp:-traditional-cpp}";
729 /* We don't wrap .d files in %W{} since a missing .d file, and
730 therefore no dependency entry, confuses make into thinking a .o
731 file that happens to exist is up-to-date. */
732 static const char *cpp_unique_options =
733 "%{C:%{!E:%eGNU C does not support -C without using -E}}\
734 %{CC:%{!E:%eGNU C does not support -CC without using -E}}\
735 %{!Q:-quiet} %{nostdinc*} %{C} %{CC} %{v} %{I*} %{P} %I\
736 %{MD:-MD %{!o:%b.d}%{o*:%.d%*}}\
737 %{MMD:-MMD %{!o:%b.d}%{o*:%.d%*}}\
738 %{M} %{MM} %{MF*} %{MG} %{MP} %{MQ*} %{MT*}\
739 %{!E:%{!M:%{!MM:%{MD|MMD:%{o*:-MQ %*}}}}}\
740 %{!no-gcc:-D__GNUC__=%v1 -D__GNUC_MINOR__=%v2 -D__GNUC_PATCHLEVEL__=%v3}\
741 %{!undef:%{!ansi:%{!std=*:%p}%{std=gnu*:%p}} %P} %{trigraphs}\
742 %{remap} %{g3:-dD} %{H} %C %{D*&U*&A*} %{i*} %Z %i\
745 /* This contains cpp options which are common with cc1_options and are passed
746 only when preprocessing only to avoid duplication. We pass the cc1 spec
747 options to the preprocessor so that it the cc1 spec may manipulate
748 options used to set target flags. Those special target flags settings may
749 in turn cause preprocessor symbols to be defined specially. */
750 static const char *cpp_options =
751 "%(cpp_unique_options) %1 %{m*} %{std*} %{ansi} %{W*&pedantic*} %{w} %{f*}\
754 /* This contains cpp options which are not passed when the preprocessor
755 output will be used by another program. */
756 static const char *cpp_debug_options = "%{d*}";
758 /* NB: This is shared amongst all front-ends. */
759 static const char *cc1_options =
760 "%{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\
761 %1 %{!Q:-quiet} -dumpbase %B %{d*} %{m*} %{a*}\
762 -auxbase%{c|S:%{o*:-strip %*}%{!o*: %b}}%{!c:%{!S: %b}}\
763 %{g*} %{O*} %{W*&pedantic*} %{w} %{std*} %{ansi}\
764 %{v:-version} %{pg:-p} %{p} %{f*} %{undef}\
765 %{Qn:-fno-ident} %{--help:--help}\
766 %{--target-help:--target-help}\
767 %{!fsyntax-only:%{S:%W{o*}%{!o*:-o %b.s}}}\
768 %{fsyntax-only:-o %j} %{-param*}";
770 static const char *asm_options =
771 "%a %Y %{c:%W{o*}%{!o*:-o %w%b%O}}%{!c:-o %d%w%u%O}";
773 static const char *invoke_as =
774 #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT
775 "%{!S:-o %|.s |\n as %(asm_options) %|.s %A }";
777 "%{!S:-o %|.s |\n as %(asm_options) %m.s %A }";
780 /* Some compilers have limits on line lengths, and the multilib_select
781 and/or multilib_matches strings can be very long, so we build them at
783 static struct obstack multilib_obstack;
784 static const char *multilib_select;
785 static const char *multilib_matches;
786 static const char *multilib_defaults;
787 static const char *multilib_exclusions;
788 #include "multilib.h"
790 /* Check whether a particular argument is a default argument. */
792 #ifndef MULTILIB_DEFAULTS
793 #define MULTILIB_DEFAULTS { "" }
796 static const char *const multilib_defaults_raw[] = MULTILIB_DEFAULTS;
798 #ifndef DRIVER_SELF_SPECS
799 #define DRIVER_SELF_SPECS ""
802 static const char *const driver_self_specs[] = { DRIVER_SELF_SPECS };
806 struct user_specs *next;
807 const char *filename;
810 static struct user_specs *user_specs_head, *user_specs_tail;
812 /* This defines which switch letters take arguments. */
814 #define DEFAULT_SWITCH_TAKES_ARG(CHAR) \
815 ((CHAR) == 'D' || (CHAR) == 'U' || (CHAR) == 'o' \
816 || (CHAR) == 'e' || (CHAR) == 'T' || (CHAR) == 'u' \
817 || (CHAR) == 'I' || (CHAR) == 'm' || (CHAR) == 'x' \
818 || (CHAR) == 'L' || (CHAR) == 'A' || (CHAR) == 'B' || (CHAR) == 'b')
820 #ifndef SWITCH_TAKES_ARG
821 #define SWITCH_TAKES_ARG(CHAR) DEFAULT_SWITCH_TAKES_ARG(CHAR)
824 /* This defines which multi-letter switches take arguments. */
826 #define DEFAULT_WORD_SWITCH_TAKES_ARG(STR) \
827 (!strcmp (STR, "Tdata") || !strcmp (STR, "Ttext") \
828 || !strcmp (STR, "Tbss") || !strcmp (STR, "include") \
829 || !strcmp (STR, "imacros") || !strcmp (STR, "aux-info") \
830 || !strcmp (STR, "idirafter") || !strcmp (STR, "iprefix") \
831 || !strcmp (STR, "iwithprefix") || !strcmp (STR, "iwithprefixbefore") \
832 || !strcmp (STR, "isystem") || !strcmp (STR, "-param") \
833 || !strcmp (STR, "specs") \
834 || !strcmp (STR, "MF") || !strcmp (STR, "MT") || !strcmp (STR, "MQ"))
836 #ifndef WORD_SWITCH_TAKES_ARG
837 #define WORD_SWITCH_TAKES_ARG(STR) DEFAULT_WORD_SWITCH_TAKES_ARG (STR)
840 #ifdef HAVE_TARGET_EXECUTABLE_SUFFIX
841 /* This defines which switches stop a full compilation. */
842 #define DEFAULT_SWITCH_CURTAILS_COMPILATION(CHAR) \
843 ((CHAR) == 'c' || (CHAR) == 'S')
845 #ifndef SWITCH_CURTAILS_COMPILATION
846 #define SWITCH_CURTAILS_COMPILATION(CHAR) \
847 DEFAULT_SWITCH_CURTAILS_COMPILATION(CHAR)
851 /* Record the mapping from file suffixes for compilation specs. */
855 const char *suffix; /* Use this compiler for input files
856 whose names end in this suffix. */
858 const char *spec; /* To use this compiler, run this spec. */
860 const char *cpp_spec; /* If non-NULL, substitute this spec
861 for `%C', rather than the usual
865 /* Pointer to a vector of `struct compiler' that gives the spec for
866 compiling a file, based on its suffix.
867 A file that does not end in any of these suffixes will be passed
868 unchanged to the loader and nothing else will be done to it.
870 An entry containing two 0s is used to terminate the vector.
872 If multiple entries match a file, the last matching one is used. */
874 static struct compiler *compilers;
876 /* Number of entries in `compilers', not counting the null terminator. */
878 static int n_compilers;
880 /* The default list of file name suffixes and their compilation specs. */
882 static const struct compiler default_compilers[] =
884 /* Add lists of suffixes of known languages here. If those languages
885 were not present when we built the driver, we will hit these copies
886 and be given a more meaningful error than "file not used since
887 linking is not done". */
888 {".m", "#Objective-C", 0}, {".mi", "#Objective-C", 0},
889 {".cc", "#C++", 0}, {".cxx", "#C++", 0}, {".cpp", "#C++", 0},
890 {".cp", "#C++", 0}, {".c++", "#C++", 0}, {".C", "#C++", 0},
891 {".CPP", "#C++", 0}, {".ii", "#C++", 0},
892 {".ads", "#Ada", 0}, {".adb", "#Ada", 0},
893 {".f", "#Fortran", 0}, {".for", "#Fortran", 0}, {".fpp", "#Fortran", 0},
894 {".F", "#Fortran", 0}, {".FOR", "#Fortran", 0}, {".FPP", "#Fortran", 0},
895 {".r", "#Ratfor", 0},
896 {".p", "#Pascal", 0}, {".pas", "#Pascal", 0},
897 {".java", "#Java", 0}, {".class", "#Java", 0},
898 {".zip", "#Java", 0}, {".jar", "#Java", 0},
899 /* Next come the entries for C. */
902 /* cc1 has an integrated ISO C preprocessor. We should invoke the
903 external preprocessor if -save-temps is given. */
904 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\
906 %{traditional|ftraditional:\
907 %eGNU C no longer supports -traditional without -E}\
908 %{save-temps|traditional-cpp:%(trad_capable_cpp) \
909 %(cpp_options) %b.i \n\
910 cc1 -fpreprocessed %b.i %(cc1_options)}\
911 %{!save-temps:%{!traditional-cpp:\
912 cc1 %(cpp_unique_options) %(cc1_options)}}\
913 %{!fsyntax-only:%(invoke_as)}}}}", 0},
915 "%{!E:%e-E required when input is from standard input}\
916 %(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)", 0},
917 {".h", "@c-header", 0},
919 /* cc1 has an integrated ISO C preprocessor. We should invoke the
920 external preprocessor if -save-temps is given. */
921 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\
923 %{save-temps|traditional-cpp:%(trad_capable_cpp) \
924 %(cpp_options) %b.i \n\
925 cc1 -fpreprocessed %b.i %(cc1_options)\
926 -o %g.s %{!o*:--output-pch=%i.pch}\
927 %W{o*:--output-pch=%*}%V}\
928 %{!save-temps:%{!traditional-cpp:\
929 cc1 %(cpp_unique_options) %(cc1_options)\
930 -o %g.s %{!o*:--output-pch=%i.pch}\
931 %W{o*:--output-pch=%*}%V}}}}}", 0},
932 {".i", "@cpp-output", 0},
934 "%{!M:%{!MM:%{!E:cc1 -fpreprocessed %i %(cc1_options) %{!fsyntax-only:%(invoke_as)}}}}", 0},
935 {".s", "@assembler", 0},
937 "%{!M:%{!MM:%{!E:%{!S:as %(asm_debug) %(asm_options) %i %A }}}}", 0},
938 {".S", "@assembler-with-cpp", 0},
939 {"@assembler-with-cpp",
940 #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT
941 "%(trad_capable_cpp) -lang-asm %(cpp_options)\
942 %{E|M|MM:%(cpp_debug_options)}\
943 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\
944 as %(asm_debug) %(asm_options) %|.s %A }}}}"
946 "%(trad_capable_cpp) -lang-asm %(cpp_options)\
947 %{E|M|MM:%(cpp_debug_options)}\
948 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\
949 as %(asm_debug) %(asm_options) %m.s %A }}}}"
954 /* Mark end of table */
958 /* Number of elements in default_compilers, not counting the terminator. */
960 static const int n_default_compilers = ARRAY_SIZE (default_compilers) - 1;
962 /* A vector of options to give to the linker.
963 These options are accumulated by %x,
964 and substituted into the linker command with %X. */
965 static int n_linker_options;
966 static char **linker_options;
968 /* A vector of options to give to the assembler.
969 These options are accumulated by -Wa,
970 and substituted into the assembler command with %Y. */
971 static int n_assembler_options;
972 static char **assembler_options;
974 /* A vector of options to give to the preprocessor.
975 These options are accumulated by -Wp,
976 and substituted into the preprocessor command with %Z. */
977 static int n_preprocessor_options;
978 static char **preprocessor_options;
980 /* Define how to map long options into short ones. */
982 /* This structure describes one mapping. */
985 /* The long option's name. */
986 const char *const name;
987 /* The equivalent short option. */
988 const char *const equivalent;
989 /* Argument info. A string of flag chars; NULL equals no options.
990 a => argument required.
991 o => argument optional.
992 j => join argument to equivalent, making one word.
993 * => require other text after NAME as an argument. */
994 const char *const arg_info;
997 /* This is the table of mappings. Mappings are tried sequentially
998 for each option encountered; the first one that matches, wins. */
1000 static const struct option_map option_map[] =
1002 {"--all-warnings", "-Wall", 0},
1003 {"--ansi", "-ansi", 0},
1004 {"--assemble", "-S", 0},
1005 {"--assert", "-A", "a"},
1006 {"--classpath", "-fclasspath=", "aj"},
1007 {"--bootclasspath", "-fbootclasspath=", "aj"},
1008 {"--CLASSPATH", "-fclasspath=", "aj"},
1009 {"--comments", "-C", 0},
1010 {"--comments-in-macros", "-CC", 0},
1011 {"--compile", "-c", 0},
1012 {"--debug", "-g", "oj"},
1013 {"--define-macro", "-D", "aj"},
1014 {"--dependencies", "-M", 0},
1015 {"--dump", "-d", "a"},
1016 {"--dumpbase", "-dumpbase", "a"},
1017 {"--entry", "-e", 0},
1018 {"--extra-warnings", "-W", 0},
1019 {"--for-assembler", "-Wa", "a"},
1020 {"--for-linker", "-Xlinker", "a"},
1021 {"--force-link", "-u", "a"},
1022 {"--imacros", "-imacros", "a"},
1023 {"--include", "-include", "a"},
1024 {"--include-barrier", "-I-", 0},
1025 {"--include-directory", "-I", "aj"},
1026 {"--include-directory-after", "-idirafter", "a"},
1027 {"--include-prefix", "-iprefix", "a"},
1028 {"--include-with-prefix", "-iwithprefix", "a"},
1029 {"--include-with-prefix-before", "-iwithprefixbefore", "a"},
1030 {"--include-with-prefix-after", "-iwithprefix", "a"},
1031 {"--language", "-x", "a"},
1032 {"--library-directory", "-L", "a"},
1033 {"--machine", "-m", "aj"},
1034 {"--machine-", "-m", "*j"},
1035 {"--no-line-commands", "-P", 0},
1036 {"--no-precompiled-includes", "-noprecomp", 0},
1037 {"--no-standard-includes", "-nostdinc", 0},
1038 {"--no-standard-libraries", "-nostdlib", 0},
1039 {"--no-warnings", "-w", 0},
1040 {"--optimize", "-O", "oj"},
1041 {"--output", "-o", "a"},
1042 {"--output-class-directory", "-foutput-class-dir=", "ja"},
1043 {"--param", "--param", "a"},
1044 {"--pedantic", "-pedantic", 0},
1045 {"--pedantic-errors", "-pedantic-errors", 0},
1046 {"--pipe", "-pipe", 0},
1047 {"--prefix", "-B", "a"},
1048 {"--preprocess", "-E", 0},
1049 {"--print-search-dirs", "-print-search-dirs", 0},
1050 {"--print-file-name", "-print-file-name=", "aj"},
1051 {"--print-libgcc-file-name", "-print-libgcc-file-name", 0},
1052 {"--print-missing-file-dependencies", "-MG", 0},
1053 {"--print-multi-lib", "-print-multi-lib", 0},
1054 {"--print-multi-directory", "-print-multi-directory", 0},
1055 {"--print-multi-os-directory", "-print-multi-os-directory", 0},
1056 {"--print-prog-name", "-print-prog-name=", "aj"},
1057 {"--profile", "-p", 0},
1058 {"--profile-blocks", "-a", 0},
1059 {"--quiet", "-q", 0},
1060 {"--resource", "-fcompile-resource=", "aj"},
1061 {"--save-temps", "-save-temps", 0},
1062 {"--shared", "-shared", 0},
1063 {"--silent", "-q", 0},
1064 {"--specs", "-specs=", "aj"},
1065 {"--static", "-static", 0},
1066 {"--std", "-std=", "aj"},
1067 {"--symbolic", "-symbolic", 0},
1068 {"--target", "-b", "a"},
1069 {"--time", "-time", 0},
1070 {"--trace-includes", "-H", 0},
1071 {"--traditional", "-traditional", 0},
1072 {"--traditional-cpp", "-traditional-cpp", 0},
1073 {"--trigraphs", "-trigraphs", 0},
1074 {"--undefine-macro", "-U", "aj"},
1075 {"--use-version", "-V", "a"},
1076 {"--user-dependencies", "-MM", 0},
1077 {"--verbose", "-v", 0},
1078 {"--warn-", "-W", "*j"},
1079 {"--write-dependencies", "-MD", 0},
1080 {"--write-user-dependencies", "-MMD", 0},
1085 #ifdef TARGET_OPTION_TRANSLATE_TABLE
1086 static const struct {
1087 const char *const option_found;
1088 const char *const replacements;
1089 } target_option_translations[] =
1091 TARGET_OPTION_TRANSLATE_TABLE,
1096 /* Translate the options described by *ARGCP and *ARGVP.
1097 Make a new vector and store it back in *ARGVP,
1098 and store its length in *ARGVC. */
1101 translate_options (argcp, argvp)
1103 const char *const **argvp;
1107 const char *const *argv = *argvp;
1108 int newvsize = (argc + 2) * 2 * sizeof (const char *);
1110 (const char **) xmalloc (newvsize);
1114 newv[newindex++] = argv[i++];
1118 #ifdef TARGET_OPTION_TRANSLATE_TABLE
1122 target_option_translations[tott_idx].option_found;
1125 if (strcmp (target_option_translations[tott_idx].option_found,
1132 for (sp = target_option_translations[tott_idx].replacements;
1139 newvsize += spaces * sizeof (const char *);
1140 newv = (const char **) xrealloc (newv, newvsize);
1142 sp = target_option_translations[tott_idx].replacements;
1151 newv[newindex++] = np;
1152 while (*np != ' ' && *np)
1163 if (target_option_translations[tott_idx].option_found)
1167 /* Translate -- options. */
1168 if (argv[i][0] == '-' && argv[i][1] == '-')
1171 /* Find a mapping that applies to this option. */
1172 for (j = 0; j < ARRAY_SIZE (option_map); j++)
1174 size_t optlen = strlen (option_map[j].name);
1175 size_t arglen = strlen (argv[i]);
1176 size_t complen = arglen > optlen ? optlen : arglen;
1177 const char *arginfo = option_map[j].arg_info;
1182 if (!strncmp (argv[i], option_map[j].name, complen))
1184 const char *arg = 0;
1186 if (arglen < optlen)
1189 for (k = j + 1; k < ARRAY_SIZE (option_map); k++)
1190 if (strlen (option_map[k].name) >= arglen
1191 && !strncmp (argv[i], option_map[k].name, arglen))
1193 error ("ambiguous abbreviation %s", argv[i]);
1197 if (k != ARRAY_SIZE (option_map))
1201 if (arglen > optlen)
1203 /* If the option has an argument, accept that. */
1204 if (argv[i][optlen] == '=')
1205 arg = argv[i] + optlen + 1;
1207 /* If this mapping requires extra text at end of name,
1208 accept that as "argument". */
1209 else if (strchr (arginfo, '*') != 0)
1210 arg = argv[i] + optlen;
1212 /* Otherwise, extra text at end means mismatch.
1213 Try other mappings. */
1218 else if (strchr (arginfo, '*') != 0)
1220 error ("incomplete `%s' option", option_map[j].name);
1224 /* Handle arguments. */
1225 if (strchr (arginfo, 'a') != 0)
1231 error ("missing argument to `%s' option",
1232 option_map[j].name);
1239 else if (strchr (arginfo, '*') != 0)
1241 else if (strchr (arginfo, 'o') == 0)
1244 error ("extraneous argument to `%s' option",
1245 option_map[j].name);
1249 /* Store the translation as one argv elt or as two. */
1250 if (arg != 0 && strchr (arginfo, 'j') != 0)
1251 newv[newindex++] = concat (option_map[j].equivalent, arg,
1255 newv[newindex++] = option_map[j].equivalent;
1256 newv[newindex++] = arg;
1259 newv[newindex++] = option_map[j].equivalent;
1267 /* Handle old-fashioned options--just copy them through,
1268 with their arguments. */
1269 else if (argv[i][0] == '-')
1271 const char *p = argv[i] + 1;
1275 if (SWITCH_TAKES_ARG (c) > (p[1] != 0))
1276 nskip += SWITCH_TAKES_ARG (c) - (p[1] != 0);
1277 else if (WORD_SWITCH_TAKES_ARG (p))
1278 nskip += WORD_SWITCH_TAKES_ARG (p);
1279 else if ((c == 'B' || c == 'b' || c == 'x')
1282 else if (! strcmp (p, "Xlinker"))
1284 else if (! strcmp (p, "Xpreprocessor"))
1286 else if (! strcmp (p, "Xassembler"))
1289 /* Watch out for an option at the end of the command line that
1290 is missing arguments, and avoid skipping past the end of the
1292 if (nskip + i > argc)
1297 newv[newindex++] = argv[i++];
1302 /* Ordinary operands, or +e options. */
1303 newv[newindex++] = argv[i++];
1318 /* A fully-blank line is a delimiter in the SPEC file and shouldn't
1319 be considered whitespace. */
1320 if (p[0] == '\n' && p[1] == '\n' && p[2] == '\n')
1322 else if (*p == '\n' || *p == ' ' || *p == '\t')
1336 /* Structures to keep track of prefixes to try when looking for files. */
1340 const char *prefix; /* String to prepend to the path. */
1341 struct prefix_list *next; /* Next in linked list. */
1342 int require_machine_suffix; /* Don't use without machine_suffix. */
1343 /* 2 means try both machine_suffix and just_machine_suffix. */
1344 int *used_flag_ptr; /* 1 if a file was found with this prefix. */
1345 int priority; /* Sort key - priority within list. */
1346 int os_multilib; /* 1 if OS multilib scheme should be used,
1347 0 for GCC multilib scheme. */
1352 struct prefix_list *plist; /* List of prefixes to try */
1353 int max_len; /* Max length of a prefix in PLIST */
1354 const char *name; /* Name of this list (used in config stuff) */
1357 /* List of prefixes to try when looking for executables. */
1359 static struct path_prefix exec_prefixes = { 0, 0, "exec" };
1361 /* List of prefixes to try when looking for startup (crt0) files. */
1363 static struct path_prefix startfile_prefixes = { 0, 0, "startfile" };
1365 /* List of prefixes to try when looking for include files. */
1367 static struct path_prefix include_prefixes = { 0, 0, "include" };
1369 /* Suffix to attach to directories searched for commands.
1370 This looks like `MACHINE/VERSION/'. */
1372 static const char *machine_suffix = 0;
1374 /* Suffix to attach to directories searched for commands.
1375 This is just `MACHINE/'. */
1377 static const char *just_machine_suffix = 0;
1379 /* Adjusted value of GCC_EXEC_PREFIX envvar. */
1381 static const char *gcc_exec_prefix;
1383 /* Default prefixes to attach to command names. */
1385 #ifdef CROSS_COMPILE /* Don't use these prefixes for a cross compiler. */
1386 #undef MD_EXEC_PREFIX
1387 #undef MD_STARTFILE_PREFIX
1388 #undef MD_STARTFILE_PREFIX_1
1391 /* If no prefixes defined, use the null string, which will disable them. */
1392 #ifndef MD_EXEC_PREFIX
1393 #define MD_EXEC_PREFIX ""
1395 #ifndef MD_STARTFILE_PREFIX
1396 #define MD_STARTFILE_PREFIX ""
1398 #ifndef MD_STARTFILE_PREFIX_1
1399 #define MD_STARTFILE_PREFIX_1 ""
1402 /* Supply defaults for the standard prefixes. */
1404 #ifndef STANDARD_EXEC_PREFIX
1405 #define STANDARD_EXEC_PREFIX "/usr/local/lib/gcc-lib/"
1407 #ifndef STANDARD_STARTFILE_PREFIX
1408 #define STANDARD_STARTFILE_PREFIX "/usr/local/lib/"
1410 #ifndef TOOLDIR_BASE_PREFIX
1411 #define TOOLDIR_BASE_PREFIX "/usr/local/"
1413 #ifndef STANDARD_BINDIR_PREFIX
1414 #define STANDARD_BINDIR_PREFIX "/usr/local/bin"
1417 static const char *const standard_exec_prefix = STANDARD_EXEC_PREFIX;
1418 static const char *const standard_exec_prefix_1 = "/usr/lib/gcc/";
1419 static const char *md_exec_prefix = MD_EXEC_PREFIX;
1421 static const char *md_startfile_prefix = MD_STARTFILE_PREFIX;
1422 static const char *md_startfile_prefix_1 = MD_STARTFILE_PREFIX_1;
1423 static const char *const standard_startfile_prefix = STANDARD_STARTFILE_PREFIX;
1424 static const char *const standard_startfile_prefix_1 = "/lib/";
1425 static const char *const standard_startfile_prefix_2 = "/usr/lib/";
1427 static const char *const tooldir_base_prefix = TOOLDIR_BASE_PREFIX;
1428 static const char *tooldir_prefix;
1430 static const char *const standard_bindir_prefix = STANDARD_BINDIR_PREFIX;
1432 /* Subdirectory to use for locating libraries. Set by
1433 set_multilib_dir based on the compilation options. */
1435 static const char *multilib_dir;
1437 /* Subdirectory to use for locating libraries in OS conventions. Set by
1438 set_multilib_dir based on the compilation options. */
1440 static const char *multilib_os_dir;
1442 /* Structure to keep track of the specs that have been defined so far.
1443 These are accessed using %(specname) or %[specname] in a compiler
1448 /* The following 2 fields must be first */
1449 /* to allow EXTRA_SPECS to be initialized */
1450 const char *name; /* name of the spec. */
1451 const char *ptr; /* available ptr if no static pointer */
1453 /* The following fields are not initialized */
1454 /* by EXTRA_SPECS */
1455 const char **ptr_spec; /* pointer to the spec itself. */
1456 struct spec_list *next; /* Next spec in linked list. */
1457 int name_len; /* length of the name */
1458 int alloc_p; /* whether string was allocated */
1461 #define INIT_STATIC_SPEC(NAME,PTR) \
1462 { NAME, NULL, PTR, (struct spec_list *) 0, sizeof (NAME) - 1, 0 }
1464 /* List of statically defined specs. */
1465 static struct spec_list static_specs[] =
1467 INIT_STATIC_SPEC ("asm", &asm_spec),
1468 INIT_STATIC_SPEC ("asm_debug", &asm_debug),
1469 INIT_STATIC_SPEC ("asm_final", &asm_final_spec),
1470 INIT_STATIC_SPEC ("asm_options", &asm_options),
1471 INIT_STATIC_SPEC ("invoke_as", &invoke_as),
1472 INIT_STATIC_SPEC ("cpp", &cpp_spec),
1473 INIT_STATIC_SPEC ("cpp_options", &cpp_options),
1474 INIT_STATIC_SPEC ("cpp_debug_options", &cpp_debug_options),
1475 INIT_STATIC_SPEC ("cpp_unique_options", &cpp_unique_options),
1476 INIT_STATIC_SPEC ("trad_capable_cpp", &trad_capable_cpp),
1477 INIT_STATIC_SPEC ("cc1", &cc1_spec),
1478 INIT_STATIC_SPEC ("cc1_options", &cc1_options),
1479 INIT_STATIC_SPEC ("cc1plus", &cc1plus_spec),
1480 INIT_STATIC_SPEC ("link_gcc_c_sequence", &link_gcc_c_sequence_spec),
1481 INIT_STATIC_SPEC ("endfile", &endfile_spec),
1482 INIT_STATIC_SPEC ("link", &link_spec),
1483 INIT_STATIC_SPEC ("lib", &lib_spec),
1484 INIT_STATIC_SPEC ("libgcc", &libgcc_spec),
1485 INIT_STATIC_SPEC ("startfile", &startfile_spec),
1486 INIT_STATIC_SPEC ("switches_need_spaces", &switches_need_spaces),
1487 INIT_STATIC_SPEC ("predefines", &cpp_predefines),
1488 INIT_STATIC_SPEC ("cross_compile", &cross_compile),
1489 INIT_STATIC_SPEC ("version", &compiler_version),
1490 INIT_STATIC_SPEC ("multilib", &multilib_select),
1491 INIT_STATIC_SPEC ("multilib_defaults", &multilib_defaults),
1492 INIT_STATIC_SPEC ("multilib_extra", &multilib_extra),
1493 INIT_STATIC_SPEC ("multilib_matches", &multilib_matches),
1494 INIT_STATIC_SPEC ("multilib_exclusions", &multilib_exclusions),
1495 INIT_STATIC_SPEC ("multilib_options", &multilib_options),
1496 INIT_STATIC_SPEC ("linker", &linker_name_spec),
1497 INIT_STATIC_SPEC ("link_libgcc", &link_libgcc_spec),
1498 INIT_STATIC_SPEC ("md_exec_prefix", &md_exec_prefix),
1499 INIT_STATIC_SPEC ("md_startfile_prefix", &md_startfile_prefix),
1500 INIT_STATIC_SPEC ("md_startfile_prefix_1", &md_startfile_prefix_1),
1501 INIT_STATIC_SPEC ("startfile_prefix_spec", &startfile_prefix_spec),
1504 #ifdef EXTRA_SPECS /* additional specs needed */
1505 /* Structure to keep track of just the first two args of a spec_list.
1506 That is all that the EXTRA_SPECS macro gives us. */
1509 const char *const name;
1510 const char *const ptr;
1513 static const struct spec_list_1 extra_specs_1[] = { EXTRA_SPECS };
1514 static struct spec_list *extra_specs = (struct spec_list *) 0;
1517 /* List of dynamically allocates specs that have been defined so far. */
1519 static struct spec_list *specs = (struct spec_list *) 0;
1521 /* List of static spec functions. */
1523 static const struct spec_function static_spec_functions[] =
1525 { "if-exists", if_exists_spec_function },
1526 { "if-exists-else", if_exists_else_spec_function },
1530 static int processing_spec_function;
1532 /* Add appropriate libgcc specs to OBSTACK, taking into account
1533 various permutations of -shared-libgcc, -shared, and such. */
1535 #ifdef ENABLE_SHARED_LIBGCC
1537 init_gcc_specs (obstack, shared_name, static_name, eh_name)
1538 struct obstack *obstack;
1539 const char *shared_name;
1540 const char *static_name;
1541 const char *eh_name;
1545 buf = concat ("%{static|static-libgcc:", static_name, " ", eh_name,
1546 "}%{!static:%{!static-libgcc:",
1547 "%{!shared:%{!shared-libgcc:", static_name, " ",
1548 eh_name, "}%{shared-libgcc:", shared_name, " ",
1549 static_name, "}}%{shared:",
1551 "%{shared-libgcc:", shared_name,
1552 "}%{!shared-libgcc:", static_name, "}",
1558 obstack_grow (obstack, buf, strlen (buf));
1561 #endif /* ENABLE_SHARED_LIBGCC */
1563 /* Initialize the specs lookup routines. */
1568 struct spec_list *next = (struct spec_list *) 0;
1569 struct spec_list *sl = (struct spec_list *) 0;
1573 return; /* Already initialized. */
1576 notice ("Using built-in specs.\n");
1579 extra_specs = (struct spec_list *)
1580 xcalloc (sizeof (struct spec_list), ARRAY_SIZE (extra_specs_1));
1582 for (i = ARRAY_SIZE (extra_specs_1) - 1; i >= 0; i--)
1584 sl = &extra_specs[i];
1585 sl->name = extra_specs_1[i].name;
1586 sl->ptr = extra_specs_1[i].ptr;
1588 sl->name_len = strlen (sl->name);
1589 sl->ptr_spec = &sl->ptr;
1594 /* Initialize here, not in definition. The IRIX 6 O32 cc sometimes chokes
1595 on ?: in file-scope variable initializations. */
1596 asm_debug = ASM_DEBUG_SPEC;
1598 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--)
1600 sl = &static_specs[i];
1605 #ifdef ENABLE_SHARED_LIBGCC
1606 /* ??? If neither -shared-libgcc nor --static-libgcc was
1607 seen, then we should be making an educated guess. Some proposed
1608 heuristics for ELF include:
1610 (1) If "-Wl,--export-dynamic", then it's a fair bet that the
1611 program will be doing dynamic loading, which will likely
1612 need the shared libgcc.
1614 (2) If "-ldl", then it's also a fair bet that we're doing
1617 (3) For each ET_DYN we're linking against (either through -lfoo
1618 or /some/path/foo.so), check to see whether it or one of
1619 its dependencies depends on a shared libgcc.
1623 If the runtime is fixed to look for program headers instead
1624 of calling __register_frame_info at all, for each object,
1625 use the shared libgcc if any EH symbol referenced.
1627 If crtstuff is fixed to not invoke __register_frame_info
1628 automatically, for each object, use the shared libgcc if
1629 any non-empty unwind section found.
1631 Doing any of this probably requires invoking an external program to
1632 do the actual object file scanning. */
1634 const char *p = libgcc_spec;
1637 /* Transform the extant libgcc_spec into one that uses the shared libgcc
1638 when given the proper command line arguments. */
1641 if (in_sep && *p == '-' && strncmp (p, "-lgcc", 5) == 0)
1643 init_gcc_specs (&obstack,
1644 #ifdef NO_SHARED_LIBGCC_MULTILIB
1649 #ifdef USE_LIBUNWIND_EXCEPTIONS
1658 else if (in_sep && *p == 'l' && strncmp (p, "libgcc.a%s", 10) == 0)
1660 /* Ug. We don't know shared library extensions. Hope that
1661 systems that use this form don't do shared libraries. */
1662 init_gcc_specs (&obstack,
1663 #ifdef NO_SHARED_LIBGCC_MULTILIB
1676 obstack_1grow (&obstack, *p);
1677 in_sep = (*p == ' ');
1682 obstack_1grow (&obstack, '\0');
1683 libgcc_spec = obstack_finish (&obstack);
1686 #ifdef USE_AS_TRADITIONAL_FORMAT
1687 /* Prepend "--traditional-format" to whatever asm_spec we had before. */
1689 static const char tf[] = "--traditional-format ";
1690 obstack_grow (&obstack, tf, sizeof(tf) - 1);
1691 obstack_grow0 (&obstack, asm_spec, strlen (asm_spec));
1692 asm_spec = obstack_finish (&obstack);
1696 /* Prepend LINK_EH_SPEC to whatever link_spec we had before. */
1697 obstack_grow (&obstack, LINK_EH_SPEC, sizeof(LINK_EH_SPEC) - 1);
1698 obstack_grow0 (&obstack, link_spec, strlen (link_spec));
1699 link_spec = obstack_finish (&obstack);
1705 /* Change the value of spec NAME to SPEC. If SPEC is empty, then the spec is
1706 removed; If the spec starts with a + then SPEC is added to the end of the
1710 set_spec (name, spec)
1714 struct spec_list *sl;
1715 const char *old_spec;
1716 int name_len = strlen (name);
1719 /* If this is the first call, initialize the statically allocated specs. */
1722 struct spec_list *next = (struct spec_list *) 0;
1723 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--)
1725 sl = &static_specs[i];
1732 /* See if the spec already exists. */
1733 for (sl = specs; sl; sl = sl->next)
1734 if (name_len == sl->name_len && !strcmp (sl->name, name))
1739 /* Not found - make it. */
1740 sl = (struct spec_list *) xmalloc (sizeof (struct spec_list));
1741 sl->name = xstrdup (name);
1742 sl->name_len = name_len;
1743 sl->ptr_spec = &sl->ptr;
1745 *(sl->ptr_spec) = "";
1750 old_spec = *(sl->ptr_spec);
1751 *(sl->ptr_spec) = ((spec[0] == '+' && ISSPACE ((unsigned char)spec[1]))
1752 ? concat (old_spec, spec + 1, NULL)
1757 notice ("Setting spec %s to '%s'\n\n", name, *(sl->ptr_spec));
1760 /* Free the old spec. */
1761 if (old_spec && sl->alloc_p)
1762 free ((PTR) old_spec);
1767 /* Accumulate a command (program name and args), and run it. */
1769 /* Vector of pointers to arguments in the current line of specifications. */
1771 static const char **argbuf;
1773 /* Number of elements allocated in argbuf. */
1775 static int argbuf_length;
1777 /* Number of elements in argbuf currently in use (containing args). */
1779 static int argbuf_index;
1781 /* This is the list of suffixes and codes (%g/%u/%U/%j) and the associated
1782 temp file. If the HOST_BIT_BUCKET is used for %j, no entry is made for
1785 static struct temp_name {
1786 const char *suffix; /* suffix associated with the code. */
1787 int length; /* strlen (suffix). */
1788 int unique; /* Indicates whether %g or %u/%U was used. */
1789 const char *filename; /* associated filename. */
1790 int filename_length; /* strlen (filename). */
1791 struct temp_name *next;
1794 /* Number of commands executed so far. */
1796 static int execution_count;
1798 /* Number of commands that exited with a signal. */
1800 static int signal_count;
1802 /* Name with which this program was invoked. */
1804 static const char *programname;
1806 /* Allocate the argument vector. */
1812 argbuf = (const char **) xmalloc (argbuf_length * sizeof (const char *));
1815 /* Clear out the vector of arguments (after a command is executed). */
1823 /* Add one argument to the vector at the end.
1824 This is done when a space is seen or at the end of the line.
1825 If DELETE_ALWAYS is nonzero, the arg is a filename
1826 and the file should be deleted eventually.
1827 If DELETE_FAILURE is nonzero, the arg is a filename
1828 and the file should be deleted if this compilation fails. */
1831 store_arg (arg, delete_always, delete_failure)
1833 int delete_always, delete_failure;
1835 if (argbuf_index + 1 == argbuf_length)
1837 = (const char **) xrealloc (argbuf,
1838 (argbuf_length *= 2) * sizeof (const char *));
1840 argbuf[argbuf_index++] = arg;
1841 argbuf[argbuf_index] = 0;
1843 if (delete_always || delete_failure)
1844 record_temp_file (arg, delete_always, delete_failure);
1847 /* Load specs from a file name named FILENAME, replacing occurrences of
1848 various different types of line-endings, \r\n, \n\r and just \r, with
1852 load_specs (filename)
1853 const char *filename;
1857 struct stat statbuf;
1864 notice ("Reading specs from %s\n", filename);
1866 /* Open and stat the file. */
1867 desc = open (filename, O_RDONLY, 0);
1869 pfatal_with_name (filename);
1870 if (stat (filename, &statbuf) < 0)
1871 pfatal_with_name (filename);
1873 /* Read contents of file into BUFFER. */
1874 buffer = xmalloc ((unsigned) statbuf.st_size + 1);
1875 readlen = read (desc, buffer, (unsigned) statbuf.st_size);
1877 pfatal_with_name (filename);
1878 buffer[readlen] = 0;
1881 specs = xmalloc (readlen + 1);
1883 for (buffer_p = buffer; buffer_p && *buffer_p; buffer_p++)
1889 if (buffer_p > buffer && *(buffer_p - 1) == '\n') /* \n\r */
1891 else if (*(buffer_p + 1) == '\n') /* \r\n */
1905 /* Read compilation specs from a file named FILENAME,
1906 replacing the default ones.
1908 A suffix which starts with `*' is a definition for
1909 one of the machine-specific sub-specs. The "suffix" should be
1910 *asm, *cc1, *cpp, *link, *startfile, etc.
1911 The corresponding spec is stored in asm_spec, etc.,
1912 rather than in the `compilers' vector.
1914 Anything invalid in the file is a fatal error. */
1917 read_specs (filename, main_p)
1918 const char *filename;
1924 buffer = load_specs (filename);
1926 /* Scan BUFFER for specs, putting them in the vector. */
1932 char *in, *out, *p1, *p2, *p3;
1934 /* Advance P in BUFFER to the next nonblank nocomment line. */
1935 p = skip_whitespace (p);
1939 /* Is this a special command that starts with '%'? */
1940 /* Don't allow this for the main specs file, since it would
1941 encourage people to overwrite it. */
1942 if (*p == '%' && !main_p)
1945 while (*p && *p != '\n')
1951 if (!strncmp (p1, "%include", sizeof ("%include") - 1)
1952 && (p1[sizeof "%include" - 1] == ' '
1953 || p1[sizeof "%include" - 1] == '\t'))
1957 p1 += sizeof ("%include");
1958 while (*p1 == ' ' || *p1 == '\t')
1961 if (*p1++ != '<' || p[-2] != '>')
1962 fatal ("specs %%include syntax malformed after %ld characters",
1963 (long) (p1 - buffer + 1));
1966 new_filename = find_a_file (&startfile_prefixes, p1, R_OK, 0);
1967 read_specs (new_filename ? new_filename : p1, FALSE);
1970 else if (!strncmp (p1, "%include_noerr", sizeof "%include_noerr" - 1)
1971 && (p1[sizeof "%include_noerr" - 1] == ' '
1972 || p1[sizeof "%include_noerr" - 1] == '\t'))
1976 p1 += sizeof "%include_noerr";
1977 while (*p1 == ' ' || *p1 == '\t')
1980 if (*p1++ != '<' || p[-2] != '>')
1981 fatal ("specs %%include syntax malformed after %ld characters",
1982 (long) (p1 - buffer + 1));
1985 new_filename = find_a_file (&startfile_prefixes, p1, R_OK, 0);
1987 read_specs (new_filename, FALSE);
1988 else if (verbose_flag)
1989 notice ("could not find specs file %s\n", p1);
1992 else if (!strncmp (p1, "%rename", sizeof "%rename" - 1)
1993 && (p1[sizeof "%rename" - 1] == ' '
1994 || p1[sizeof "%rename" - 1] == '\t'))
1997 struct spec_list *sl;
1998 struct spec_list *newsl;
2000 /* Get original name. */
2001 p1 += sizeof "%rename";
2002 while (*p1 == ' ' || *p1 == '\t')
2005 if (! ISALPHA ((unsigned char) *p1))
2006 fatal ("specs %%rename syntax malformed after %ld characters",
2007 (long) (p1 - buffer));
2010 while (*p2 && !ISSPACE ((unsigned char) *p2))
2013 if (*p2 != ' ' && *p2 != '\t')
2014 fatal ("specs %%rename syntax malformed after %ld characters",
2015 (long) (p2 - buffer));
2019 while (*p2 == ' ' || *p2 == '\t')
2022 if (! ISALPHA ((unsigned char) *p2))
2023 fatal ("specs %%rename syntax malformed after %ld characters",
2024 (long) (p2 - buffer));
2026 /* Get new spec name. */
2028 while (*p3 && !ISSPACE ((unsigned char) *p3))
2032 fatal ("specs %%rename syntax malformed after %ld characters",
2033 (long) (p3 - buffer));
2036 for (sl = specs; sl; sl = sl->next)
2037 if (name_len == sl->name_len && !strcmp (sl->name, p1))
2041 fatal ("specs %s spec was not found to be renamed", p1);
2043 if (strcmp (p1, p2) == 0)
2046 for (newsl = specs; newsl; newsl = newsl->next)
2047 if (strcmp (newsl->name, p2) == 0)
2048 fatal ("%s: attempt to rename spec '%s' to already defined spec '%s'",
2053 notice ("rename spec %s to %s\n", p1, p2);
2055 notice ("spec is '%s'\n\n", *(sl->ptr_spec));
2059 set_spec (p2, *(sl->ptr_spec));
2061 free ((PTR) *(sl->ptr_spec));
2063 *(sl->ptr_spec) = "";
2068 fatal ("specs unknown %% command after %ld characters",
2069 (long) (p1 - buffer));
2072 /* Find the colon that should end the suffix. */
2074 while (*p1 && *p1 != ':' && *p1 != '\n')
2077 /* The colon shouldn't be missing. */
2079 fatal ("specs file malformed after %ld characters",
2080 (long) (p1 - buffer));
2082 /* Skip back over trailing whitespace. */
2084 while (p2 > buffer && (p2[-1] == ' ' || p2[-1] == '\t'))
2087 /* Copy the suffix to a string. */
2088 suffix = save_string (p, p2 - p);
2089 /* Find the next line. */
2090 p = skip_whitespace (p1 + 1);
2092 fatal ("specs file malformed after %ld characters",
2093 (long) (p - buffer));
2096 /* Find next blank line or end of string. */
2097 while (*p1 && !(*p1 == '\n' && (p1[1] == '\n' || p1[1] == '\0')))
2100 /* Specs end at the blank line and do not include the newline. */
2101 spec = save_string (p, p1 - p);
2104 /* Delete backslash-newline sequences from the spec. */
2109 if (in[0] == '\\' && in[1] == '\n')
2111 else if (in[0] == '#')
2112 while (*in && *in != '\n')
2120 if (suffix[0] == '*')
2122 if (! strcmp (suffix, "*link_command"))
2123 link_command_spec = spec;
2125 set_spec (suffix + 1, spec);
2129 /* Add this pair to the vector. */
2131 = ((struct compiler *)
2132 xrealloc (compilers,
2133 (n_compilers + 2) * sizeof (struct compiler)));
2135 compilers[n_compilers].suffix = suffix;
2136 compilers[n_compilers].spec = spec;
2138 memset (&compilers[n_compilers], 0, sizeof compilers[n_compilers]);
2142 link_command_spec = spec;
2145 if (link_command_spec == 0)
2146 fatal ("spec file has no spec for linking");
2149 /* Record the names of temporary files we tell compilers to write,
2150 and delete them at the end of the run. */
2152 /* This is the common prefix we use to make temp file names.
2153 It is chosen once for each run of this program.
2154 It is substituted into a spec by %g or %j.
2155 Thus, all temp file names contain this prefix.
2156 In practice, all temp file names start with this prefix.
2158 This prefix comes from the envvar TMPDIR if it is defined;
2159 otherwise, from the P_tmpdir macro if that is defined;
2160 otherwise, in /usr/tmp or /tmp;
2161 or finally the current directory if all else fails. */
2163 static const char *temp_filename;
2165 /* Length of the prefix. */
2167 static int temp_filename_length;
2169 /* Define the list of temporary files to delete. */
2174 struct temp_file *next;
2177 /* Queue of files to delete on success or failure of compilation. */
2178 static struct temp_file *always_delete_queue;
2179 /* Queue of files to delete on failure of compilation. */
2180 static struct temp_file *failure_delete_queue;
2182 /* Record FILENAME as a file to be deleted automatically.
2183 ALWAYS_DELETE nonzero means delete it if all compilation succeeds;
2184 otherwise delete it in any case.
2185 FAIL_DELETE nonzero means delete it if a compilation step fails;
2186 otherwise delete it in any case. */
2189 record_temp_file (filename, always_delete, fail_delete)
2190 const char *filename;
2194 char *const name = xstrdup (filename);
2198 struct temp_file *temp;
2199 for (temp = always_delete_queue; temp; temp = temp->next)
2200 if (! strcmp (name, temp->name))
2203 temp = (struct temp_file *) xmalloc (sizeof (struct temp_file));
2204 temp->next = always_delete_queue;
2206 always_delete_queue = temp;
2213 struct temp_file *temp;
2214 for (temp = failure_delete_queue; temp; temp = temp->next)
2215 if (! strcmp (name, temp->name))
2218 temp = (struct temp_file *) xmalloc (sizeof (struct temp_file));
2219 temp->next = failure_delete_queue;
2221 failure_delete_queue = temp;
2227 /* Delete all the temporary files whose names we previously recorded. */
2230 delete_if_ordinary (name)
2237 printf ("Delete %s? (y or n) ", name);
2241 while ((c = getchar ()) != '\n' && c != EOF)
2244 if (i == 'y' || i == 'Y')
2246 if (stat (name, &st) >= 0 && S_ISREG (st.st_mode))
2247 if (unlink (name) < 0)
2249 perror_with_name (name);
2253 delete_temp_files ()
2255 struct temp_file *temp;
2257 for (temp = always_delete_queue; temp; temp = temp->next)
2258 delete_if_ordinary (temp->name);
2259 always_delete_queue = 0;
2262 /* Delete all the files to be deleted on error. */
2265 delete_failure_queue ()
2267 struct temp_file *temp;
2269 for (temp = failure_delete_queue; temp; temp = temp->next)
2270 delete_if_ordinary (temp->name);
2274 clear_failure_queue ()
2276 failure_delete_queue = 0;
2279 /* Build a list of search directories from PATHS.
2280 PREFIX is a string to prepend to the list.
2281 If CHECK_DIR_P is nonzero we ensure the directory exists.
2282 This is used mostly by putenv_from_prefixes so we use `collect_obstack'.
2283 It is also used by the --print-search-dirs flag. */
2286 build_search_list (paths, prefix, check_dir_p)
2287 struct path_prefix *paths;
2291 int suffix_len = (machine_suffix) ? strlen (machine_suffix) : 0;
2293 = (just_machine_suffix) ? strlen (just_machine_suffix) : 0;
2294 int first_time = TRUE;
2295 struct prefix_list *pprefix;
2297 obstack_grow (&collect_obstack, prefix, strlen (prefix));
2298 obstack_1grow (&collect_obstack, '=');
2300 for (pprefix = paths->plist; pprefix != 0; pprefix = pprefix->next)
2302 int len = strlen (pprefix->prefix);
2306 || is_directory (pprefix->prefix, machine_suffix, 0)))
2309 obstack_1grow (&collect_obstack, PATH_SEPARATOR);
2312 obstack_grow (&collect_obstack, pprefix->prefix, len);
2313 obstack_grow (&collect_obstack, machine_suffix, suffix_len);
2316 if (just_machine_suffix
2317 && pprefix->require_machine_suffix == 2
2319 || is_directory (pprefix->prefix, just_machine_suffix, 0)))
2322 obstack_1grow (&collect_obstack, PATH_SEPARATOR);
2325 obstack_grow (&collect_obstack, pprefix->prefix, len);
2326 obstack_grow (&collect_obstack, just_machine_suffix,
2330 if (! pprefix->require_machine_suffix)
2333 obstack_1grow (&collect_obstack, PATH_SEPARATOR);
2336 obstack_grow (&collect_obstack, pprefix->prefix, len);
2340 obstack_1grow (&collect_obstack, '\0');
2341 return obstack_finish (&collect_obstack);
2344 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
2348 putenv_from_prefixes (paths, env_var)
2349 struct path_prefix *paths;
2350 const char *env_var;
2352 putenv (build_search_list (paths, env_var, 1));
2355 /* Check whether NAME can be accessed in MODE. This is like access,
2356 except that it never considers directories to be executable. */
2359 access_check (name, mode)
2367 if (stat (name, &st) < 0
2368 || S_ISDIR (st.st_mode))
2372 return access (name, mode);
2375 /* Search for NAME using the prefix list PREFIXES. MODE is passed to
2376 access to check permissions.
2377 Return 0 if not found, otherwise return its name, allocated with malloc. */
2380 find_a_file (pprefix, name, mode, multilib)
2381 struct path_prefix *pprefix;
2386 const char *const file_suffix =
2387 ((mode & X_OK) != 0 ? HOST_EXECUTABLE_SUFFIX : "");
2388 struct prefix_list *pl;
2389 int len = pprefix->max_len + strlen (name) + strlen (file_suffix) + 1;
2390 const char *multilib_name, *multilib_os_name;
2392 #ifdef DEFAULT_ASSEMBLER
2393 if (! strcmp (name, "as") && access (DEFAULT_ASSEMBLER, mode) == 0)
2394 return xstrdup (DEFAULT_ASSEMBLER);
2397 #ifdef DEFAULT_LINKER
2398 if (! strcmp(name, "ld") && access (DEFAULT_LINKER, mode) == 0)
2399 return xstrdup (DEFAULT_LINKER);
2403 len += strlen (machine_suffix);
2405 multilib_name = name;
2406 multilib_os_name = name;
2407 if (multilib && multilib_os_dir)
2409 int len1 = multilib_dir ? strlen (multilib_dir) + 1 : 0;
2410 int len2 = strlen (multilib_os_dir) + 1;
2412 len += len1 > len2 ? len1 : len2;
2414 multilib_name = ACONCAT ((multilib_dir, dir_separator_str, name,
2416 if (strcmp (multilib_os_dir, ".") != 0)
2417 multilib_os_name = ACONCAT ((multilib_os_dir, dir_separator_str, name,
2421 temp = xmalloc (len);
2423 /* Determine the filename to execute (special case for absolute paths). */
2425 if (IS_ABSOLUTE_PATHNAME (name))
2427 if (access (name, mode) == 0)
2429 strcpy (temp, name);
2434 for (pl = pprefix->plist; pl; pl = pl->next)
2436 const char *this_name
2437 = pl->os_multilib ? multilib_os_name : multilib_name;
2441 /* Some systems have a suffix for executable files.
2442 So try appending that first. */
2443 if (file_suffix[0] != 0)
2445 strcpy (temp, pl->prefix);
2446 strcat (temp, machine_suffix);
2447 strcat (temp, multilib_name);
2448 strcat (temp, file_suffix);
2449 if (access_check (temp, mode) == 0)
2451 if (pl->used_flag_ptr != 0)
2452 *pl->used_flag_ptr = 1;
2457 /* Now try just the multilib_name. */
2458 strcpy (temp, pl->prefix);
2459 strcat (temp, machine_suffix);
2460 strcat (temp, multilib_name);
2461 if (access_check (temp, mode) == 0)
2463 if (pl->used_flag_ptr != 0)
2464 *pl->used_flag_ptr = 1;
2469 /* Certain prefixes are tried with just the machine type,
2470 not the version. This is used for finding as, ld, etc. */
2471 if (just_machine_suffix && pl->require_machine_suffix == 2)
2473 /* Some systems have a suffix for executable files.
2474 So try appending that first. */
2475 if (file_suffix[0] != 0)
2477 strcpy (temp, pl->prefix);
2478 strcat (temp, just_machine_suffix);
2479 strcat (temp, multilib_name);
2480 strcat (temp, file_suffix);
2481 if (access_check (temp, mode) == 0)
2483 if (pl->used_flag_ptr != 0)
2484 *pl->used_flag_ptr = 1;
2489 strcpy (temp, pl->prefix);
2490 strcat (temp, just_machine_suffix);
2491 strcat (temp, multilib_name);
2492 if (access_check (temp, mode) == 0)
2494 if (pl->used_flag_ptr != 0)
2495 *pl->used_flag_ptr = 1;
2500 /* Certain prefixes can't be used without the machine suffix
2501 when the machine or version is explicitly specified. */
2502 if (! pl->require_machine_suffix)
2504 /* Some systems have a suffix for executable files.
2505 So try appending that first. */
2506 if (file_suffix[0] != 0)
2508 strcpy (temp, pl->prefix);
2509 strcat (temp, this_name);
2510 strcat (temp, file_suffix);
2511 if (access_check (temp, mode) == 0)
2513 if (pl->used_flag_ptr != 0)
2514 *pl->used_flag_ptr = 1;
2519 strcpy (temp, pl->prefix);
2520 strcat (temp, this_name);
2521 if (access_check (temp, mode) == 0)
2523 if (pl->used_flag_ptr != 0)
2524 *pl->used_flag_ptr = 1;
2534 /* Ranking of prefixes in the sort list. -B prefixes are put before
2537 enum path_prefix_priority
2539 PREFIX_PRIORITY_B_OPT,
2540 PREFIX_PRIORITY_LAST
2543 /* Add an entry for PREFIX in PLIST. The PLIST is kept in ascending
2544 order according to PRIORITY. Within each PRIORITY, new entries are
2547 If WARN is nonzero, we will warn if no file is found
2548 through this prefix. WARN should point to an int
2549 which will be set to 1 if this entry is used.
2551 COMPONENT is the value to be passed to update_path.
2553 REQUIRE_MACHINE_SUFFIX is 1 if this prefix can't be used without
2554 the complete value of machine_suffix.
2555 2 means try both machine_suffix and just_machine_suffix. */
2558 add_prefix (pprefix, prefix, component, priority, require_machine_suffix,
2560 struct path_prefix *pprefix;
2562 const char *component;
2563 /* enum prefix_priority */ int priority;
2564 int require_machine_suffix;
2568 struct prefix_list *pl, **prev;
2571 for (prev = &pprefix->plist;
2572 (*prev) != NULL && (*prev)->priority <= priority;
2573 prev = &(*prev)->next)
2576 /* Keep track of the longest prefix */
2578 prefix = update_path (prefix, component);
2579 len = strlen (prefix);
2580 if (len > pprefix->max_len)
2581 pprefix->max_len = len;
2583 pl = (struct prefix_list *) xmalloc (sizeof (struct prefix_list));
2584 pl->prefix = prefix;
2585 pl->require_machine_suffix = require_machine_suffix;
2586 pl->used_flag_ptr = warn;
2587 pl->priority = priority;
2588 pl->os_multilib = os_multilib;
2592 /* Insert after PREV */
2597 /* Same as add_prefix, but prepending target_system_root to prefix. */
2599 add_sysrooted_prefix (pprefix, prefix, component, priority,
2600 require_machine_suffix, warn, os_multilib)
2601 struct path_prefix *pprefix;
2603 const char *component;
2604 /* enum prefix_priority */ int priority;
2605 int require_machine_suffix;
2609 if (!IS_ABSOLUTE_PATHNAME (prefix))
2612 if (target_system_root)
2614 prefix = concat (target_system_root, prefix, NULL);
2615 /* We have to override this because GCC's notion of sysroot
2616 moves along with GCC. */
2620 add_prefix (pprefix, prefix, component, priority,
2621 require_machine_suffix, warn, os_multilib);
2624 /* Execute the command specified by the arguments on the current line of spec.
2625 When using pipes, this includes several piped-together commands
2626 with `|' between them.
2628 Return 0 if successful, -1 if failed. */
2634 int n_commands; /* # of command. */
2638 const char *prog; /* program name. */
2639 const char **argv; /* vector of args. */
2640 int pid; /* pid of process for this command. */
2643 struct command *commands; /* each command buffer with above info. */
2645 if (processing_spec_function)
2648 /* Count # of piped commands. */
2649 for (n_commands = 1, i = 0; i < argbuf_index; i++)
2650 if (strcmp (argbuf[i], "|") == 0)
2653 /* Get storage for each command. */
2654 commands = (struct command *) alloca (n_commands * sizeof (struct command));
2656 /* Split argbuf into its separate piped processes,
2657 and record info about each one.
2658 Also search for the programs that are to be run. */
2660 commands[0].prog = argbuf[0]; /* first command. */
2661 commands[0].argv = &argbuf[0];
2662 string = find_a_file (&exec_prefixes, commands[0].prog, X_OK, 0);
2665 commands[0].argv[0] = string;
2667 for (n_commands = 1, i = 0; i < argbuf_index; i++)
2668 if (strcmp (argbuf[i], "|") == 0)
2669 { /* each command. */
2670 #if defined (__MSDOS__) || defined (OS2) || defined (VMS)
2671 fatal ("-pipe not supported");
2673 argbuf[i] = 0; /* termination of command args. */
2674 commands[n_commands].prog = argbuf[i + 1];
2675 commands[n_commands].argv = &argbuf[i + 1];
2676 string = find_a_file (&exec_prefixes, commands[n_commands].prog,
2679 commands[n_commands].argv[0] = string;
2683 argbuf[argbuf_index] = 0;
2685 /* If -v, print what we are about to do, and maybe query. */
2689 /* For help listings, put a blank line between sub-processes. */
2690 if (print_help_list)
2691 fputc ('\n', stderr);
2693 /* Print each piped command as a separate line. */
2694 for (i = 0; i < n_commands; i++)
2696 const char *const *j;
2698 if (verbose_only_flag)
2700 for (j = commands[i].argv; *j; j++)
2703 fprintf (stderr, " \"");
2704 for (p = *j; *p; ++p)
2706 if (*p == '"' || *p == '\\' || *p == '$')
2707 fputc ('\\', stderr);
2710 fputc ('"', stderr);
2714 for (j = commands[i].argv; *j; j++)
2715 fprintf (stderr, " %s", *j);
2717 /* Print a pipe symbol after all but the last command. */
2718 if (i + 1 != n_commands)
2719 fprintf (stderr, " |");
2720 fprintf (stderr, "\n");
2723 if (verbose_only_flag != 0)
2726 notice ("\nGo ahead? (y or n) ");
2730 while (getchar () != '\n')
2733 if (i != 'y' && i != 'Y')
2738 #ifdef ENABLE_VALGRIND_CHECKING
2739 /* Run the each command through valgrind. To simplify prepending the
2740 path to valgrind and the option "-q" (for quiet operation unless
2741 something triggers), we allocate a separate argv array. */
2743 for (i = 0; i < n_commands; i++)
2749 for (argc = 0; commands[i].argv[argc] != NULL; argc++)
2752 argv = alloca ((argc + 3) * sizeof (char *));
2754 argv[0] = VALGRIND_PATH;
2756 for (j = 2; j < argc + 2; j++)
2757 argv[j] = commands[i].argv[j - 2];
2760 commands[i].argv = argv;
2761 commands[i].prog = argv[0];
2765 /* Run each piped subprocess. */
2767 for (i = 0; i < n_commands; i++)
2769 char *errmsg_fmt, *errmsg_arg;
2770 const char *string = commands[i].argv[0];
2772 /* For some bizarre reason, the second argument of execvp() is
2773 char *const *, not const char *const *. */
2774 commands[i].pid = pexecute (string, (char *const *) commands[i].argv,
2775 programname, temp_filename,
2776 &errmsg_fmt, &errmsg_arg,
2777 ((i == 0 ? PEXECUTE_FIRST : 0)
2778 | (i + 1 == n_commands ? PEXECUTE_LAST : 0)
2779 | (string == commands[i].prog
2780 ? PEXECUTE_SEARCH : 0)
2781 | (verbose_flag ? PEXECUTE_VERBOSE : 0)));
2783 if (commands[i].pid == -1)
2784 pfatal_pexecute (errmsg_fmt, errmsg_arg);
2786 if (string != commands[i].prog)
2787 free ((PTR) string);
2792 /* Wait for all the subprocesses to finish.
2793 We don't care what order they finish in;
2794 we know that N_COMMANDS waits will get them all.
2795 Ignore subprocesses that we don't know about,
2796 since they can be spawned by the process that exec'ed us. */
2800 #ifdef HAVE_GETRUSAGE
2802 double ut = 0.0, st = 0.0;
2805 for (i = 0; i < n_commands;)
2811 pid = pwait (commands[i].pid, &status, 0);
2815 #ifdef HAVE_GETRUSAGE
2818 /* getrusage returns the total resource usage of all children
2819 up to now. Copy the previous values into prus, get the
2820 current statistics, then take the difference. */
2823 getrusage (RUSAGE_CHILDREN, &rus);
2824 d.tv_sec = rus.ru_utime.tv_sec - prus.ru_utime.tv_sec;
2825 d.tv_usec = rus.ru_utime.tv_usec - prus.ru_utime.tv_usec;
2826 ut = (double) d.tv_sec + (double) d.tv_usec / 1.0e6;
2828 d.tv_sec = rus.ru_stime.tv_sec - prus.ru_stime.tv_sec;
2829 d.tv_usec = rus.ru_stime.tv_usec - prus.ru_stime.tv_usec;
2830 st = (double) d.tv_sec + (double) d.tv_usec / 1.0e6;
2834 for (j = 0; j < n_commands; j++)
2835 if (commands[j].pid == pid)
2838 if (WIFSIGNALED (status))
2841 /* SIGPIPE is a special case. It happens in -pipe mode
2842 when the compiler dies before the preprocessor is
2843 done, or the assembler dies before the compiler is
2844 done. There's generally been an error already, and
2845 this is just fallout. So don't generate another error
2846 unless we would otherwise have succeeded. */
2847 if (WTERMSIG (status) == SIGPIPE
2848 && (signal_count || greatest_status >= MIN_FATAL_STATUS))
2853 Internal error: %s (program %s)\n\
2854 Please submit a full bug report.\n\
2855 See %s for instructions.",
2856 strsignal (WTERMSIG (status)), commands[j].prog,
2861 else if (WIFEXITED (status)
2862 && WEXITSTATUS (status) >= MIN_FATAL_STATUS)
2864 if (WEXITSTATUS (status) > greatest_status)
2865 greatest_status = WEXITSTATUS (status);
2868 #ifdef HAVE_GETRUSAGE
2869 if (report_times && ut + st != 0)
2870 notice ("# %s %.2f %.2f\n", commands[j].prog, ut, st);
2879 /* Find all the switches given to us
2880 and make a vector describing them.
2881 The elements of the vector are strings, one per switch given.
2882 If a switch uses following arguments, then the `part1' field
2883 is the switch itself and the `args' field
2884 is a null-terminated vector containing the following arguments.
2885 The `live_cond' field is:
2887 1 if the switch is true in a conditional spec,
2888 -1 if false (overridden by a later switch)
2889 -2 if this switch should be ignored (used in %<S)
2890 The `validated' field is nonzero if any spec has looked at this switch;
2891 if it remains zero at the end of the run, it must be meaningless. */
2894 #define SWITCH_FALSE -1
2895 #define SWITCH_IGNORE -2
2896 #define SWITCH_LIVE 1
2903 unsigned char validated;
2904 unsigned char ordering;
2907 static struct switchstr *switches;
2909 static int n_switches;
2914 const char *language;
2917 /* Also a vector of input files specified. */
2919 static struct infile *infiles;
2923 /* This counts the number of libraries added by lang_specific_driver, so that
2924 we can tell if there were any user supplied any files or libraries. */
2926 static int added_libraries;
2928 /* And a vector of corresponding output files is made up later. */
2930 const char **outfiles;
2932 /* Used to track if none of the -B paths are used. */
2935 /* Gives value to pass as "warn" to add_prefix for standard prefixes. */
2936 static int *warn_std_ptr = 0;
2938 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2940 /* Convert NAME to a new name if it is the standard suffix. DO_EXE
2941 is true if we should look for an executable suffix. DO_OBJ
2942 is true if we should look for an object suffix. */
2945 convert_filename (name, do_exe, do_obj)
2947 int do_exe ATTRIBUTE_UNUSED;
2948 int do_obj ATTRIBUTE_UNUSED;
2950 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2958 len = strlen (name);
2960 #ifdef HAVE_TARGET_OBJECT_SUFFIX
2961 /* Convert x.o to x.obj if TARGET_OBJECT_SUFFIX is ".obj". */
2962 if (do_obj && len > 2
2963 && name[len - 2] == '.'
2964 && name[len - 1] == 'o')
2966 obstack_grow (&obstack, name, len - 2);
2967 obstack_grow0 (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX));
2968 name = obstack_finish (&obstack);
2972 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2973 /* If there is no filetype, make it the executable suffix (which includes
2974 the "."). But don't get confused if we have just "-o". */
2975 if (! do_exe || TARGET_EXECUTABLE_SUFFIX[0] == 0 || (len == 2 && name[0] == '-'))
2978 for (i = len - 1; i >= 0; i--)
2979 if (IS_DIR_SEPARATOR (name[i]))
2982 for (i++; i < len; i++)
2986 obstack_grow (&obstack, name, len);
2987 obstack_grow0 (&obstack, TARGET_EXECUTABLE_SUFFIX,
2988 strlen (TARGET_EXECUTABLE_SUFFIX));
2989 name = obstack_finish (&obstack);
2996 /* Display the command line switches accepted by gcc. */
3000 printf (_("Usage: %s [options] file...\n"), programname);
3001 fputs (_("Options:\n"), stdout);
3003 fputs (_(" -pass-exit-codes Exit with highest error code from a phase\n"), stdout);
3004 fputs (_(" --help Display this information\n"), stdout);
3005 fputs (_(" --target-help Display target specific command line options\n"), stdout);
3007 fputs (_(" (Use '-v --help' to display command line options of sub-processes)\n"), stdout);
3008 fputs (_(" -dumpspecs Display all of the built in spec strings\n"), stdout);
3009 fputs (_(" -dumpversion Display the version of the compiler\n"), stdout);
3010 fputs (_(" -dumpmachine Display the compiler's target processor\n"), stdout);
3011 fputs (_(" -print-search-dirs Display the directories in the compiler's search path\n"), stdout);
3012 fputs (_(" -print-libgcc-file-name Display the name of the compiler's companion library\n"), stdout);
3013 fputs (_(" -print-file-name=<lib> Display the full path to library <lib>\n"), stdout);
3014 fputs (_(" -print-prog-name=<prog> Display the full path to compiler component <prog>\n"), stdout);
3015 fputs (_(" -print-multi-directory Display the root directory for versions of libgcc\n"), stdout);
3017 -print-multi-lib Display the mapping between command line options and\n\
3018 multiple library search directories\n"), stdout);
3019 fputs (_(" -print-multi-os-directory Display the relative path to OS libraries\n"), stdout);
3020 fputs (_(" -Wa,<options> Pass comma-separated <options> on to the assembler\n"), stdout);
3021 fputs (_(" -Wp,<options> Pass comma-separated <options> on to the preprocessor\n"), stdout);
3022 fputs (_(" -Wl,<options> Pass comma-separated <options> on to the linker\n"), stdout);
3023 fputs (_(" -Xassembler <arg> Pass <arg> on to the assembler\n"), stdout);
3024 fputs (_(" -Xpreprocessor <arg> Pass <arg> on to the preprocessor\n"), stdout);
3025 fputs (_(" -Xlinker <arg> Pass <arg> on to the linker\n"), stdout);
3026 fputs (_(" -save-temps Do not delete intermediate files\n"), stdout);
3027 fputs (_(" -pipe Use pipes rather than intermediate files\n"), stdout);
3028 fputs (_(" -time Time the execution of each subprocess\n"), stdout);
3029 fputs (_(" -specs=<file> Override built-in specs with the contents of <file>\n"), stdout);
3030 fputs (_(" -std=<standard> Assume that the input sources are for <standard>\n"), stdout);
3031 fputs (_(" -B <directory> Add <directory> to the compiler's search paths\n"), stdout);
3032 fputs (_(" -b <machine> Run gcc for target <machine>, if installed\n"), stdout);
3033 fputs (_(" -V <version> Run gcc version number <version>, if installed\n"), stdout);
3034 fputs (_(" -v Display the programs invoked by the compiler\n"), stdout);
3035 fputs (_(" -### Like -v but options quoted and commands not executed\n"), stdout);
3036 fputs (_(" -E Preprocess only; do not compile, assemble or link\n"), stdout);
3037 fputs (_(" -S Compile only; do not assemble or link\n"), stdout);
3038 fputs (_(" -c Compile and assemble, but do not link\n"), stdout);
3039 fputs (_(" -o <file> Place the output into <file>\n"), stdout);
3041 -x <language> Specify the language of the following input files\n\
3042 Permissable languages include: c c++ assembler none\n\
3043 'none' means revert to the default behavior of\n\
3044 guessing the language based on the file's extension\n\
3048 \nOptions starting with -g, -f, -m, -O, -W, or --param are automatically\n\
3049 passed on to the various sub-processes invoked by %s. In order to pass\n\
3050 other options on to these processes the -W<letter> options must be used.\n\
3053 /* The rest of the options are displayed by invocations of the various
3058 add_preprocessor_option (option, len)
3062 n_preprocessor_options++;
3064 if (! preprocessor_options)
3065 preprocessor_options
3066 = (char **) xmalloc (n_preprocessor_options * sizeof (char *));
3068 preprocessor_options
3069 = (char **) xrealloc (preprocessor_options,
3070 n_preprocessor_options * sizeof (char *));
3072 preprocessor_options [n_preprocessor_options - 1] =
3073 save_string (option, len);
3077 add_assembler_option (option, len)
3081 n_assembler_options++;
3083 if (! assembler_options)
3085 = (char **) xmalloc (n_assembler_options * sizeof (char *));
3088 = (char **) xrealloc (assembler_options,
3089 n_assembler_options * sizeof (char *));
3091 assembler_options [n_assembler_options - 1] = save_string (option, len);
3095 add_linker_option (option, len)
3101 if (! linker_options)
3103 = (char **) xmalloc (n_linker_options * sizeof (char *));
3106 = (char **) xrealloc (linker_options,
3107 n_linker_options * sizeof (char *));
3109 linker_options [n_linker_options - 1] = save_string (option, len);
3112 /* Create the vector `switches' and its contents.
3113 Store its length in `n_switches'. */
3116 process_command (argc, argv)
3118 const char *const *argv;
3123 const char *spec_lang = 0;
3124 int last_language_n_infiles;
3127 int lang_n_infiles = 0;
3128 #ifdef MODIFY_TARGET_NAME
3129 int is_modify_target_name;
3133 GET_ENVIRONMENT (gcc_exec_prefix, "GCC_EXEC_PREFIX");
3137 added_libraries = 0;
3139 /* Figure compiler version from version string. */
3141 compiler_version = temp1 = xstrdup (version_string);
3143 for (; *temp1; ++temp1)
3152 /* If there is a -V or -b option (or both), process it now, before
3153 trying to interpret the rest of the command line. */
3154 if (argc > 1 && argv[1][0] == '-'
3155 && (argv[1][1] == 'V' || argv[1][1] == 'b'))
3157 const char *new_version = DEFAULT_TARGET_VERSION;
3158 const char *new_machine = DEFAULT_TARGET_MACHINE;
3159 const char *progname = argv[0];
3164 while (argc > 1 && argv[1][0] == '-'
3165 && (argv[1][1] == 'V' || argv[1][1] == 'b'))
3167 char opt = argv[1][1];
3169 if (argv[1][2] != '\0')
3182 fatal ("`-%c' option must have argument", opt);
3189 for (baselen = strlen (progname); baselen > 0; baselen--)
3190 if (IS_DIR_SEPARATOR (progname[baselen-1]))
3192 new_argv0 = xmemdup (progname, baselen,
3193 baselen + concat_length (new_version, new_machine,
3194 "-gcc-", NULL) + 1);
3195 strcpy (new_argv0 + baselen, new_machine);
3196 strcat (new_argv0, "-gcc-");
3197 strcat (new_argv0, new_version);
3199 new_argv = xmemdup (argv, (argc + 1) * sizeof (argv[0]),
3200 (argc + 1) * sizeof (argv[0]));
3201 new_argv[0] = new_argv0;
3203 execvp (new_argv0, new_argv);
3204 fatal ("couldn't run `%s': %s", new_argv0, xstrerror (errno));
3207 /* Set up the default search paths. If there is no GCC_EXEC_PREFIX,
3208 see if we can create it from the pathname specified in argv[0]. */
3211 /* FIXME: make_relative_prefix doesn't yet work for VMS. */
3212 if (!gcc_exec_prefix)
3214 gcc_exec_prefix = make_relative_prefix (argv[0], standard_bindir_prefix,
3215 standard_exec_prefix);
3216 if (gcc_exec_prefix)
3217 putenv (concat ("GCC_EXEC_PREFIX=", gcc_exec_prefix, NULL));
3221 if (gcc_exec_prefix)
3223 int len = strlen (gcc_exec_prefix);
3225 if (len > (int) sizeof ("/lib/gcc-lib/") - 1
3226 && (IS_DIR_SEPARATOR (gcc_exec_prefix[len-1])))
3228 temp = gcc_exec_prefix + len - sizeof ("/lib/gcc-lib/") + 1;
3229 if (IS_DIR_SEPARATOR (*temp)
3230 && strncmp (temp + 1, "lib", 3) == 0
3231 && IS_DIR_SEPARATOR (temp[4])
3232 && strncmp (temp + 5, "gcc-lib", 7) == 0)
3233 len -= sizeof ("/lib/gcc-lib/") - 1;
3236 set_std_prefix (gcc_exec_prefix, len);
3237 add_prefix (&exec_prefixes, gcc_exec_prefix, "GCC",
3238 PREFIX_PRIORITY_LAST, 0, NULL, 0);
3239 add_prefix (&startfile_prefixes, gcc_exec_prefix, "GCC",
3240 PREFIX_PRIORITY_LAST, 0, NULL, 0);
3243 /* COMPILER_PATH and LIBRARY_PATH have values
3244 that are lists of directory names with colons. */
3246 GET_ENVIRONMENT (temp, "COMPILER_PATH");
3249 const char *startp, *endp;
3250 char *nstore = (char *) alloca (strlen (temp) + 3);
3252 startp = endp = temp;
3255 if (*endp == PATH_SEPARATOR || *endp == 0)
3257 strncpy (nstore, startp, endp - startp);
3259 strcpy (nstore, concat (".", dir_separator_str, NULL));
3260 else if (!IS_DIR_SEPARATOR (endp[-1]))
3262 nstore[endp - startp] = DIR_SEPARATOR;
3263 nstore[endp - startp + 1] = 0;
3266 nstore[endp - startp] = 0;
3267 add_prefix (&exec_prefixes, nstore, 0,
3268 PREFIX_PRIORITY_LAST, 0, NULL, 0);
3269 add_prefix (&include_prefixes,
3270 concat (nstore, "include", NULL),
3271 0, PREFIX_PRIORITY_LAST, 0, NULL, 0);
3274 endp = startp = endp + 1;
3281 GET_ENVIRONMENT (temp, LIBRARY_PATH_ENV);
3282 if (temp && *cross_compile == '0')
3284 const char *startp, *endp;
3285 char *nstore = (char *) alloca (strlen (temp) + 3);
3287 startp = endp = temp;
3290 if (*endp == PATH_SEPARATOR || *endp == 0)
3292 strncpy (nstore, startp, endp - startp);
3294 strcpy (nstore, concat (".", dir_separator_str, NULL));
3295 else if (!IS_DIR_SEPARATOR (endp[-1]))
3297 nstore[endp - startp] = DIR_SEPARATOR;
3298 nstore[endp - startp + 1] = 0;
3301 nstore[endp - startp] = 0;
3302 add_prefix (&startfile_prefixes, nstore, NULL,
3303 PREFIX_PRIORITY_LAST, 0, NULL, 1);
3306 endp = startp = endp + 1;
3313 /* Use LPATH like LIBRARY_PATH (for the CMU build program). */
3314 GET_ENVIRONMENT (temp, "LPATH");
3315 if (temp && *cross_compile == '0')
3317 const char *startp, *endp;
3318 char *nstore = (char *) alloca (strlen (temp) + 3);
3320 startp = endp = temp;
3323 if (*endp == PATH_SEPARATOR || *endp == 0)
3325 strncpy (nstore, startp, endp - startp);
3327 strcpy (nstore, concat (".", dir_separator_str, NULL));
3328 else if (!IS_DIR_SEPARATOR (endp[-1]))
3330 nstore[endp - startp] = DIR_SEPARATOR;
3331 nstore[endp - startp + 1] = 0;
3334 nstore[endp - startp] = 0;
3335 add_prefix (&startfile_prefixes, nstore, NULL,
3336 PREFIX_PRIORITY_LAST, 0, NULL, 1);
3339 endp = startp = endp + 1;
3346 /* Convert new-style -- options to old-style. */
3347 translate_options (&argc, &argv);
3349 /* Do language-specific adjustment/addition of flags. */
3350 lang_specific_driver (&argc, &argv, &added_libraries);
3352 /* Scan argv twice. Here, the first time, just count how many switches
3353 there will be in their vector, and how many input files in theirs.
3354 Here we also parse the switches that cc itself uses (e.g. -v). */
3356 for (i = 1; i < argc; i++)
3358 if (! strcmp (argv[i], "-dumpspecs"))
3360 struct spec_list *sl;
3362 for (sl = specs; sl; sl = sl->next)
3363 printf ("*%s:\n%s\n\n", sl->name, *(sl->ptr_spec));
3364 if (link_command_spec)
3365 printf ("*link_command:\n%s\n\n", link_command_spec);
3368 else if (! strcmp (argv[i], "-dumpversion"))
3370 printf ("%s\n", spec_version);
3373 else if (! strcmp (argv[i], "-dumpmachine"))
3375 printf ("%s\n", spec_machine);
3378 else if (strcmp (argv[i], "-fversion") == 0)
3380 /* translate_options () has turned --version into -fversion. */
3381 printf (_("%s (GCC) %s\n"), programname, version_string);
3382 fputs (_("Copyright (C) 2002 Free Software Foundation, Inc.\n"),
3384 fputs (_("This is free software; see the source for copying conditions. There is NO\n\
3385 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\n"),
3389 else if (strcmp (argv[i], "-fhelp") == 0)
3391 /* translate_options () has turned --help into -fhelp. */
3392 print_help_list = 1;
3394 /* We will be passing a dummy file on to the sub-processes. */
3398 /* CPP driver cannot obtain switch from cc1_options. */
3400 add_preprocessor_option ("--help", 6);
3401 add_assembler_option ("--help", 6);
3402 add_linker_option ("--help", 6);
3404 else if (strcmp (argv[i], "-ftarget-help") == 0)
3406 /* translate_options() has turned --target-help into -ftarget-help. */
3407 target_help_flag = 1;
3409 /* We will be passing a dummy file on to the sub-processes. */
3413 /* CPP driver cannot obtain switch from cc1_options. */
3415 add_preprocessor_option ("--target-help", 13);
3416 add_assembler_option ("--target-help", 13);
3417 add_linker_option ("--target-help", 13);
3419 else if (! strcmp (argv[i], "-pass-exit-codes"))
3421 pass_exit_codes = 1;
3424 else if (! strcmp (argv[i], "-print-search-dirs"))
3425 print_search_dirs = 1;
3426 else if (! strcmp (argv[i], "-print-libgcc-file-name"))
3427 print_file_name = "libgcc.a";
3428 else if (! strncmp (argv[i], "-print-file-name=", 17))
3429 print_file_name = argv[i] + 17;
3430 else if (! strncmp (argv[i], "-print-prog-name=", 17))
3431 print_prog_name = argv[i] + 17;
3432 else if (! strcmp (argv[i], "-print-multi-lib"))
3433 print_multi_lib = 1;
3434 else if (! strcmp (argv[i], "-print-multi-directory"))
3435 print_multi_directory = 1;
3436 else if (! strcmp (argv[i], "-print-multi-os-directory"))
3437 print_multi_os_directory = 1;
3438 else if (! strncmp (argv[i], "-Wa,", 4))
3441 /* Pass the rest of this option to the assembler. */
3443 /* Split the argument at commas. */
3445 for (j = 4; argv[i][j]; j++)
3446 if (argv[i][j] == ',')
3448 add_assembler_option (argv[i] + prev, j - prev);
3452 /* Record the part after the last comma. */
3453 add_assembler_option (argv[i] + prev, j - prev);
3455 else if (! strncmp (argv[i], "-Wp,", 4))
3458 /* Pass the rest of this option to the preprocessor. */
3460 /* Split the argument at commas. */
3462 for (j = 4; argv[i][j]; j++)
3463 if (argv[i][j] == ',')
3465 add_preprocessor_option (argv[i] + prev, j - prev);
3469 /* Record the part after the last comma. */
3470 add_preprocessor_option (argv[i] + prev, j - prev);
3472 else if (argv[i][0] == '+' && argv[i][1] == 'e')
3473 /* The +e options to the C++ front-end. */
3475 else if (strncmp (argv[i], "-Wl,", 4) == 0)
3478 /* Split the argument at commas. */
3479 for (j = 3; argv[i][j]; j++)
3480 n_infiles += (argv[i][j] == ',');
3482 else if (strcmp (argv[i], "-Xlinker") == 0)
3485 fatal ("argument to `-Xlinker' is missing");
3490 else if (strcmp (argv[i], "-Xpreprocessor") == 0)
3493 fatal ("argument to `-Xpreprocessor' is missing");
3495 add_preprocessor_option (argv[i+1], strlen (argv[i+1]));
3497 else if (strcmp (argv[i], "-Xassembler") == 0)
3500 fatal ("argument to `-Xassembler' is missing");
3502 add_assembler_option (argv[i+1], strlen (argv[i+1]));
3504 else if (strcmp (argv[i], "-l") == 0)
3507 fatal ("argument to `-l' is missing");
3512 else if (strncmp (argv[i], "-l", 2) == 0)
3514 else if (strcmp (argv[i], "-save-temps") == 0)
3516 save_temps_flag = 1;
3519 else if (strcmp (argv[i], "-specs") == 0)
3521 struct user_specs *user = (struct user_specs *)
3522 xmalloc (sizeof (struct user_specs));
3524 fatal ("argument to `-specs' is missing");
3526 user->next = (struct user_specs *) 0;
3527 user->filename = argv[i];
3528 if (user_specs_tail)
3529 user_specs_tail->next = user;
3531 user_specs_head = user;
3532 user_specs_tail = user;
3534 else if (strncmp (argv[i], "-specs=", 7) == 0)
3536 struct user_specs *user = (struct user_specs *)
3537 xmalloc (sizeof (struct user_specs));
3538 if (strlen (argv[i]) == 7)
3539 fatal ("argument to `-specs=' is missing");
3541 user->next = (struct user_specs *) 0;
3542 user->filename = argv[i] + 7;
3543 if (user_specs_tail)
3544 user_specs_tail->next = user;
3546 user_specs_head = user;
3547 user_specs_tail = user;
3549 else if (strcmp (argv[i], "-time") == 0)
3551 else if (strcmp (argv[i], "-pipe") == 0)
3553 /* -pipe has to go into the switches array as well as
3558 else if (strcmp (argv[i], "-###") == 0)
3560 /* This is similar to -v except that there is no execution
3561 of the commands and the echoed arguments are quoted. It
3562 is intended for use in shell scripts to capture the
3563 driver-generated command line. */
3564 verbose_only_flag++;
3567 else if (argv[i][0] == '-' && argv[i][1] != 0)
3569 const char *p = &argv[i][1];
3576 fatal ("`-%c' must come at the start of the command line", c);
3584 if (p[1] == 0 && i + 1 == argc)
3585 fatal ("argument to `-B' is missing");
3591 len = strlen (value);
3593 /* Catch the case where the user has forgotten to append a
3594 directory separator to the path. Note, they may be using
3595 -B to add an executable name prefix, eg "i386-elf-", in
3596 order to distinguish between multiple installations of
3597 GCC in the same directory. Hence we must check to see
3598 if appending a directory separator actually makes a
3599 valid directory name. */
3600 if (! IS_DIR_SEPARATOR (value [len - 1])
3601 && is_directory (value, "", 0))
3603 char *tmp = xmalloc (len + 2);
3604 strcpy (tmp, value);
3605 tmp[len] = DIR_SEPARATOR;
3610 /* As a kludge, if the arg is "[foo/]stageN/", just
3611 add "[foo/]include" to the include prefix. */
3614 && (IS_DIR_SEPARATOR (value[len - 8]))))
3615 && strncmp (value + len - 7, "stage", 5) == 0
3616 && ISDIGIT (value[len - 2])
3617 && (IS_DIR_SEPARATOR (value[len - 1])))
3620 add_prefix (&include_prefixes, "include", NULL,
3621 PREFIX_PRIORITY_B_OPT, 0, NULL, 0);
3624 char * string = xmalloc (len + 1);
3626 strncpy (string, value, len - 7);
3627 strcpy (string + len - 7, "include");
3628 add_prefix (&include_prefixes, string, NULL,
3629 PREFIX_PRIORITY_B_OPT, 0, NULL, 0);
3633 add_prefix (&exec_prefixes, value, NULL,
3634 PREFIX_PRIORITY_B_OPT, 0, &warn_B, 0);
3635 add_prefix (&startfile_prefixes, value, NULL,
3636 PREFIX_PRIORITY_B_OPT, 0, &warn_B, 0);
3637 add_prefix (&include_prefixes, concat (value, "include", NULL),
3638 NULL, PREFIX_PRIORITY_B_OPT, 0, NULL, 0);
3643 case 'v': /* Print our subcommands and print versions. */
3645 /* If they do anything other than exactly `-v', don't set
3646 verbose_flag; rather, continue on to give the error. */
3664 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3669 /* Forward scan, just in case -S or -c is specified
3676 if (argv[j][0] == '-')
3678 if (SWITCH_CURTAILS_COMPILATION (argv[j][1])
3684 else if ((skip = SWITCH_TAKES_ARG (argv[j][1])))
3685 j += skip - (argv[j][2] != 0);
3686 else if ((skip = WORD_SWITCH_TAKES_ARG (argv[j] + 1)))
3693 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX) || defined(HAVE_TARGET_OBJECT_SUFFIX)
3695 argv[i + 1] = convert_filename (argv[i + 1], ! have_c, 0);
3697 argv[i] = convert_filename (argv[i], ! have_c, 0);
3704 #ifdef MODIFY_TARGET_NAME
3705 is_modify_target_name = 0;
3707 for (j = 0; j < ARRAY_SIZE (modify_target); j++)
3708 if (! strcmp (argv[i], modify_target[j].sw))
3711 = (char *) xmalloc (strlen (modify_target[j].str)
3712 + strlen (spec_machine));
3715 int made_addition = 0;
3717 is_modify_target_name = 1;
3718 for (p = spec_machine, q = new_name; *p != 0; )
3720 if (modify_target[j].add_del == DELETE
3721 && (! strncmp (q, modify_target[j].str,
3722 strlen (modify_target[j].str))))
3723 p += strlen (modify_target[j].str);
3724 else if (modify_target[j].add_del == ADD
3725 && ! made_addition && *p == '-')
3727 for (r = modify_target[j].str; *r != 0; )
3735 spec_machine = new_name;
3738 if (is_modify_target_name)
3744 if (SWITCH_TAKES_ARG (c) > (p[1] != 0))
3745 i += SWITCH_TAKES_ARG (c) - (p[1] != 0);
3746 else if (WORD_SWITCH_TAKES_ARG (p))
3747 i += WORD_SWITCH_TAKES_ARG (p);
3757 if (have_c && have_o && lang_n_infiles > 1)
3758 fatal ("cannot specify -o with -c or -S and multiple compilations");
3760 if ((save_temps_flag || report_times) && use_pipes)
3762 /* -save-temps overrides -pipe, so that temp files are produced */
3763 if (save_temps_flag)
3764 error ("warning: -pipe ignored because -save-temps specified");
3765 /* -time overrides -pipe because we can't get correct stats when
3766 multiple children are running at once. */
3767 else if (report_times)
3768 error ("warning: -pipe ignored because -time specified");
3773 /* Set up the search paths before we go looking for config files. */
3775 /* These come before the md prefixes so that we will find gcc's subcommands
3776 (such as cpp) rather than those of the host system. */
3777 /* Use 2 as fourth arg meaning try just the machine as a suffix,
3778 as well as trying the machine and the version. */
3780 add_prefix (&exec_prefixes, standard_exec_prefix, "GCC",
3781 PREFIX_PRIORITY_LAST, 1, warn_std_ptr, 0);
3782 add_prefix (&exec_prefixes, standard_exec_prefix, "BINUTILS",
3783 PREFIX_PRIORITY_LAST, 2, warn_std_ptr, 0);
3784 add_prefix (&exec_prefixes, standard_exec_prefix_1, "BINUTILS",
3785 PREFIX_PRIORITY_LAST, 2, warn_std_ptr, 0);
3788 add_prefix (&startfile_prefixes, standard_exec_prefix, "BINUTILS",
3789 PREFIX_PRIORITY_LAST, 1, warn_std_ptr, 0);
3790 add_prefix (&startfile_prefixes, standard_exec_prefix_1, "BINUTILS",
3791 PREFIX_PRIORITY_LAST, 1, warn_std_ptr, 0);
3793 tooldir_prefix = concat (tooldir_base_prefix, spec_machine,
3794 dir_separator_str, NULL);
3796 /* If tooldir is relative, base it on exec_prefixes. A relative
3797 tooldir lets us move the installed tree as a unit.
3799 If GCC_EXEC_PREFIX is defined, then we want to add two relative
3800 directories, so that we can search both the user specified directory
3801 and the standard place. */
3803 if (!IS_ABSOLUTE_PATHNAME (tooldir_prefix))
3805 if (gcc_exec_prefix)
3807 char *gcc_exec_tooldir_prefix
3808 = concat (gcc_exec_prefix, spec_machine, dir_separator_str,
3809 spec_version, dir_separator_str, tooldir_prefix, NULL);
3811 add_prefix (&exec_prefixes,
3812 concat (gcc_exec_tooldir_prefix, "bin",
3813 dir_separator_str, NULL),
3814 NULL, PREFIX_PRIORITY_LAST, 0, NULL, 0);
3815 add_prefix (&startfile_prefixes,
3816 concat (gcc_exec_tooldir_prefix, "lib",
3817 dir_separator_str, NULL),
3818 NULL, PREFIX_PRIORITY_LAST, 0, NULL, 1);
3821 tooldir_prefix = concat (standard_exec_prefix, spec_machine,
3822 dir_separator_str, spec_version,
3823 dir_separator_str, tooldir_prefix, NULL);
3826 add_prefix (&exec_prefixes,
3827 concat (tooldir_prefix, "bin", dir_separator_str, NULL),
3828 "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL, 0);
3829 add_prefix (&startfile_prefixes,
3830 concat (tooldir_prefix, "lib", dir_separator_str, NULL),
3831 "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL, 1);
3833 if (target_system_root && gcc_exec_prefix)
3835 char *tmp_prefix = make_relative_prefix (argv[0],
3836 standard_bindir_prefix,
3837 target_system_root);
3838 if (tmp_prefix && access_check (tmp_prefix, F_OK) == 0)
3839 target_system_root = tmp_prefix;
3842 /* More prefixes are enabled in main, after we read the specs file
3843 and determine whether this is cross-compilation or not. */
3845 /* Then create the space for the vectors and scan again. */
3847 switches = ((struct switchstr *)
3848 xmalloc ((n_switches + 1) * sizeof (struct switchstr)));
3849 infiles = (struct infile *) xmalloc ((n_infiles + 1) * sizeof (struct infile));
3852 last_language_n_infiles = -1;
3854 /* This, time, copy the text of each switch and store a pointer
3855 to the copy in the vector of switches.
3856 Store all the infiles in their vector. */
3858 for (i = 1; i < argc; i++)
3860 /* Just skip the switches that were handled by the preceding loop. */
3861 #ifdef MODIFY_TARGET_NAME
3862 is_modify_target_name = 0;
3864 for (j = 0; j < ARRAY_SIZE (modify_target); j++)
3865 if (! strcmp (argv[i], modify_target[j].sw))
3866 is_modify_target_name = 1;
3868 if (is_modify_target_name)
3872 if (! strncmp (argv[i], "-Wa,", 4))
3874 else if (! strncmp (argv[i], "-Wp,", 4))
3876 else if (! strcmp (argv[i], "-pass-exit-codes"))
3878 else if (! strcmp (argv[i], "-print-search-dirs"))
3880 else if (! strcmp (argv[i], "-print-libgcc-file-name"))
3882 else if (! strncmp (argv[i], "-print-file-name=", 17))
3884 else if (! strncmp (argv[i], "-print-prog-name=", 17))
3886 else if (! strcmp (argv[i], "-print-multi-lib"))
3888 else if (! strcmp (argv[i], "-print-multi-directory"))
3890 else if (! strcmp (argv[i], "-print-multi-os-directory"))
3892 else if (! strcmp (argv[i], "-ftarget-help"))
3894 else if (! strcmp (argv[i], "-fhelp"))
3896 else if (argv[i][0] == '+' && argv[i][1] == 'e')
3898 /* Compensate for the +e options to the C++ front-end;
3899 they're there simply for cfront call-compatibility. We do
3900 some magic in default_compilers to pass them down properly.
3901 Note we deliberately start at the `+' here, to avoid passing
3902 -e0 or -e1 down into the linker. */
3903 switches[n_switches].part1 = &argv[i][0];
3904 switches[n_switches].args = 0;
3905 switches[n_switches].live_cond = SWITCH_OK;
3906 switches[n_switches].validated = 0;
3909 else if (strncmp (argv[i], "-Wl,", 4) == 0)
3912 /* Split the argument at commas. */
3914 for (j = 4; argv[i][j]; j++)
3915 if (argv[i][j] == ',')
3917 infiles[n_infiles].language = "*";
3918 infiles[n_infiles++].name
3919 = save_string (argv[i] + prev, j - prev);
3922 /* Record the part after the last comma. */
3923 infiles[n_infiles].language = "*";
3924 infiles[n_infiles++].name = argv[i] + prev;
3926 else if (strcmp (argv[i], "-Xlinker") == 0)
3928 infiles[n_infiles].language = "*";
3929 infiles[n_infiles++].name = argv[++i];
3931 else if (strcmp (argv[i], "-Xassembler") == 0)
3933 infiles[n_infiles].language = "*";
3934 infiles[n_infiles++].name = argv[++i];
3936 else if (strcmp (argv[i], "-Xpreprocessor") == 0)
3938 infiles[n_infiles].language = "*";
3939 infiles[n_infiles++].name = argv[++i];
3941 else if (strcmp (argv[i], "-l") == 0)
3942 { /* POSIX allows separation of -l and the lib arg;
3943 canonicalize by concatenating -l with its arg */
3944 infiles[n_infiles].language = "*";
3945 infiles[n_infiles++].name = concat ("-l", argv[++i], NULL);
3947 else if (strncmp (argv[i], "-l", 2) == 0)
3949 infiles[n_infiles].language = "*";
3950 infiles[n_infiles++].name = argv[i];
3952 else if (strcmp (argv[i], "-specs") == 0)
3954 else if (strncmp (argv[i], "-specs=", 7) == 0)
3956 else if (strcmp (argv[i], "-time") == 0)
3958 else if (strcmp (argv[i], "-###") == 0)
3960 else if (argv[i][0] == '-' && argv[i][1] != 0)
3962 const char *p = &argv[i][1];
3967 if (p[1] == 0 && i + 1 == argc)
3968 fatal ("argument to `-x' is missing");
3970 spec_lang = argv[++i];
3973 if (! strcmp (spec_lang, "none"))
3974 /* Suppress the warning if -xnone comes after the last input
3975 file, because alternate command interfaces like g++ might
3976 find it useful to place -xnone after each input file. */
3979 last_language_n_infiles = n_infiles;
3982 switches[n_switches].part1 = p;
3983 /* Deal with option arguments in separate argv elements. */
3984 if ((SWITCH_TAKES_ARG (c) > (p[1] != 0))
3985 || WORD_SWITCH_TAKES_ARG (p))
3988 int n_args = WORD_SWITCH_TAKES_ARG (p);
3992 /* Count only the option arguments in separate argv elements. */
3993 n_args = SWITCH_TAKES_ARG (c) - (p[1] != 0);
3995 if (i + n_args >= argc)
3996 fatal ("argument to `-%s' is missing", p);
3997 switches[n_switches].args
3998 = (const char **) xmalloc ((n_args + 1) * sizeof(const char *));
4000 switches[n_switches].args[j++] = argv[++i];
4001 /* Null-terminate the vector. */
4002 switches[n_switches].args[j] = 0;
4004 else if (strchr (switches_need_spaces, c))
4006 /* On some systems, ld cannot handle some options without
4007 a space. So split the option from its argument. */
4008 char *part1 = (char *) xmalloc (2);
4012 switches[n_switches].part1 = part1;
4013 switches[n_switches].args
4014 = (const char **) xmalloc (2 * sizeof (const char *));
4015 switches[n_switches].args[0] = xstrdup (p+1);
4016 switches[n_switches].args[1] = 0;
4019 switches[n_switches].args = 0;
4021 switches[n_switches].live_cond = SWITCH_OK;
4022 switches[n_switches].validated = 0;
4023 switches[n_switches].ordering = 0;
4024 /* These are always valid, since gcc.c itself understands them. */
4025 if (!strcmp (p, "save-temps")
4026 || !strcmp (p, "static-libgcc")
4027 || !strcmp (p, "shared-libgcc")
4028 || !strcmp (p, "pipe"))
4029 switches[n_switches].validated = 1;
4032 char ch = switches[n_switches].part1[0];
4034 switches[n_switches].validated = 1;
4040 #ifdef HAVE_TARGET_OBJECT_SUFFIX
4041 argv[i] = convert_filename (argv[i], 0, access (argv[i], F_OK));
4044 if (strcmp (argv[i], "-") != 0 && access (argv[i], F_OK) < 0)
4046 perror_with_name (argv[i]);
4051 infiles[n_infiles].language = spec_lang;
4052 infiles[n_infiles++].name = argv[i];
4057 if (n_infiles == last_language_n_infiles && spec_lang != 0)
4058 error ("warning: `-x %s' after last input file has no effect", spec_lang);
4060 /* Ensure we only invoke each subprocess once. */
4061 if (target_help_flag || print_help_list)
4065 /* Create a dummy input file, so that we can pass --target-help on to
4066 the various sub-processes. */
4067 infiles[0].language = "c";
4068 infiles[0].name = "help-dummy";
4070 if (target_help_flag)
4072 switches[n_switches].part1 = "--target-help";
4073 switches[n_switches].args = 0;
4074 switches[n_switches].live_cond = SWITCH_OK;
4075 switches[n_switches].validated = 0;
4080 if (print_help_list)
4082 switches[n_switches].part1 = "--help";
4083 switches[n_switches].args = 0;
4084 switches[n_switches].live_cond = SWITCH_OK;
4085 switches[n_switches].validated = 0;
4091 switches[n_switches].part1 = 0;
4092 infiles[n_infiles].name = 0;
4095 /* Store switches not filtered out by %<S in spec in COLLECT_GCC_OPTIONS
4096 and place that in the environment. */
4099 set_collect_gcc_options ()
4104 /* Build COLLECT_GCC_OPTIONS to have all of the options specified to
4106 obstack_grow (&collect_obstack, "COLLECT_GCC_OPTIONS=",
4107 sizeof ("COLLECT_GCC_OPTIONS=") - 1);
4110 for (i = 0; (int) i < n_switches; i++)
4112 const char *const *args;
4115 obstack_grow (&collect_obstack, " ", 1);
4119 /* Ignore elided switches. */
4120 if (switches[i].live_cond == SWITCH_IGNORE)
4123 obstack_grow (&collect_obstack, "'-", 2);
4124 q = switches[i].part1;
4125 while ((p = strchr (q, '\'')))
4127 obstack_grow (&collect_obstack, q, p - q);
4128 obstack_grow (&collect_obstack, "'\\''", 4);
4131 obstack_grow (&collect_obstack, q, strlen (q));
4132 obstack_grow (&collect_obstack, "'", 1);
4134 for (args = switches[i].args; args && *args; args++)
4136 obstack_grow (&collect_obstack, " '", 2);
4138 while ((p = strchr (q, '\'')))
4140 obstack_grow (&collect_obstack, q, p - q);
4141 obstack_grow (&collect_obstack, "'\\''", 4);
4144 obstack_grow (&collect_obstack, q, strlen (q));
4145 obstack_grow (&collect_obstack, "'", 1);
4148 obstack_grow (&collect_obstack, "\0", 1);
4149 putenv (obstack_finish (&collect_obstack));
4152 /* Process a spec string, accumulating and running commands. */
4154 /* These variables describe the input file name.
4155 input_file_number is the index on outfiles of this file,
4156 so that the output file name can be stored for later use by %o.
4157 input_basename is the start of the part of the input file
4158 sans all directory names, and basename_length is the number
4159 of characters starting there excluding the suffix .c or whatever. */
4161 const char *input_filename;
4162 static int input_file_number;
4163 size_t input_filename_length;
4164 static int basename_length;
4165 static int suffixed_basename_length;
4166 static const char *input_basename;
4167 static const char *input_suffix;
4168 static struct stat input_stat;
4169 static int input_stat_set;
4171 /* The compiler used to process the current input file. */
4172 static struct compiler *input_file_compiler;
4174 /* These are variables used within do_spec and do_spec_1. */
4176 /* Nonzero if an arg has been started and not yet terminated
4177 (with space, tab or newline). */
4178 static int arg_going;
4180 /* Nonzero means %d or %g has been seen; the next arg to be terminated
4181 is a temporary file name. */
4182 static int delete_this_arg;
4184 /* Nonzero means %w has been seen; the next arg to be terminated
4185 is the output file name of this compilation. */
4186 static int this_is_output_file;
4188 /* Nonzero means %s has been seen; the next arg to be terminated
4189 is the name of a library file and we should try the standard
4190 search dirs for it. */
4191 static int this_is_library_file;
4193 /* Nonzero means that the input of this command is coming from a pipe. */
4194 static int input_from_pipe;
4196 /* Nonnull means substitute this for any suffix when outputting a switches
4198 static const char *suffix_subst;
4200 /* Process the spec SPEC and run the commands specified therein.
4201 Returns 0 if the spec is successfully processed; -1 if failed. */
4209 value = do_spec_2 (spec);
4211 /* Force out any unfinished command.
4212 If -pipe, this forces out the last command if it ended in `|'. */
4215 if (argbuf_index > 0 && !strcmp (argbuf[argbuf_index - 1], "|"))
4218 set_collect_gcc_options ();
4220 if (argbuf_index > 0)
4233 delete_this_arg = 0;
4234 this_is_output_file = 0;
4235 this_is_library_file = 0;
4236 input_from_pipe = 0;
4237 suffix_subst = NULL;
4239 return do_spec_1 (spec, 0, NULL);
4243 /* Process the given spec string and add any new options to the end
4244 of the switches/n_switches array. */
4251 do_spec_1 (" ", 0, NULL);
4253 if (argbuf_index > 0)
4258 n_switches += argbuf_index;
4259 switches = xrealloc (switches,
4260 sizeof (struct switchstr) * (n_switches + 1));
4262 switches[n_switches] = switches[first];
4263 for (i = 0; i < argbuf_index; i++)
4265 struct switchstr *sw;
4267 /* Each switch should start with '-'. */
4268 if (argbuf[i][0] != '-')
4271 sw = &switches[i + first];
4272 sw->part1 = &argbuf[i][1];
4274 sw->live_cond = SWITCH_OK;
4281 /* Process the sub-spec SPEC as a portion of a larger spec.
4282 This is like processing a whole spec except that we do
4283 not initialize at the beginning and we do not supply a
4284 newline by default at the end.
4285 INSWITCH nonzero means don't process %-sequences in SPEC;
4286 in this case, % is treated as an ordinary character.
4287 This is used while substituting switches.
4288 INSWITCH nonzero also causes SPC not to terminate an argument.
4290 Value is zero unless a line was finished
4291 and the command on that line reported an error. */
4294 do_spec_1 (spec, inswitch, soft_matched_part)
4297 const char *soft_matched_part;
4299 const char *p = spec;
4306 /* If substituting a switch, treat all chars like letters.
4307 Otherwise, NL, SPC, TAB and % are special. */
4308 switch (inswitch ? 'a' : c)
4311 /* End of line: finish any pending argument,
4312 then run the pending command if one has been started. */
4315 obstack_1grow (&obstack, 0);
4316 string = obstack_finish (&obstack);
4317 if (this_is_library_file)
4318 string = find_file (string);
4319 store_arg (string, delete_this_arg, this_is_output_file);
4320 if (this_is_output_file)
4321 outfiles[input_file_number] = string;
4325 if (argbuf_index > 0 && !strcmp (argbuf[argbuf_index - 1], "|"))
4327 /* A `|' before the newline means use a pipe here,
4328 but only if -pipe was specified.
4329 Otherwise, execute now and don't pass the `|' as an arg. */
4332 input_from_pipe = 1;
4339 set_collect_gcc_options ();
4341 if (argbuf_index > 0)
4347 /* Reinitialize for a new command, and for a new argument. */
4350 delete_this_arg = 0;
4351 this_is_output_file = 0;
4352 this_is_library_file = 0;
4353 input_from_pipe = 0;
4357 /* End any pending argument. */
4360 obstack_1grow (&obstack, 0);
4361 string = obstack_finish (&obstack);
4362 if (this_is_library_file)
4363 string = find_file (string);
4364 store_arg (string, delete_this_arg, this_is_output_file);
4365 if (this_is_output_file)
4366 outfiles[input_file_number] = string;
4370 obstack_1grow (&obstack, c);
4376 /* Space or tab ends an argument if one is pending. */
4379 obstack_1grow (&obstack, 0);
4380 string = obstack_finish (&obstack);
4381 if (this_is_library_file)
4382 string = find_file (string);
4383 store_arg (string, delete_this_arg, this_is_output_file);
4384 if (this_is_output_file)
4385 outfiles[input_file_number] = string;
4387 /* Reinitialize for a new argument. */
4389 delete_this_arg = 0;
4390 this_is_output_file = 0;
4391 this_is_library_file = 0;
4398 fatal ("invalid specification! Bug in cc");
4401 obstack_grow (&obstack, input_basename, basename_length);
4406 obstack_grow (&obstack, input_basename, suffixed_basename_length);
4411 delete_this_arg = 2;
4414 /* Dump out the directories specified with LIBRARY_PATH,
4415 followed by the absolute directories
4416 that we search for startfiles. */
4419 struct prefix_list *pl = startfile_prefixes.plist;
4420 size_t bufsize = 100;
4421 char *buffer = (char *) xmalloc (bufsize);
4424 for (; pl; pl = pl->next)
4426 #ifdef RELATIVE_PREFIX_NOT_LINKDIR
4427 /* Used on systems which record the specified -L dirs
4428 and use them to search for dynamic linking. */
4429 /* Relative directories always come from -B,
4430 and it is better not to use them for searching
4431 at run time. In particular, stage1 loses. */
4432 if (!IS_ABSOLUTE_PATHNAME (pl->prefix))
4435 /* Try subdirectory if there is one. */
4436 if (multilib_dir != NULL
4437 || (pl->os_multilib && multilib_os_dir != NULL))
4439 const char *multi_dir;
4441 multi_dir = pl->os_multilib ? multilib_os_dir
4443 if (machine_suffix && multilib_dir)
4445 if (strlen (pl->prefix) + strlen (machine_suffix)
4447 bufsize = (strlen (pl->prefix)
4448 + strlen (machine_suffix)) * 2 + 1;
4449 buffer = (char *) xrealloc (buffer, bufsize);
4450 strcpy (buffer, pl->prefix);
4451 strcat (buffer, machine_suffix);
4452 if (is_directory (buffer, multilib_dir, 1))
4454 do_spec_1 ("-L", 0, NULL);
4455 #ifdef SPACE_AFTER_L_OPTION
4456 do_spec_1 (" ", 0, NULL);
4458 do_spec_1 (buffer, 1, NULL);
4459 do_spec_1 (multilib_dir, 1, NULL);
4460 /* Make this a separate argument. */
4461 do_spec_1 (" ", 0, NULL);
4464 if (!pl->require_machine_suffix)
4466 if (is_directory (pl->prefix, multi_dir, 1))
4468 do_spec_1 ("-L", 0, NULL);
4469 #ifdef SPACE_AFTER_L_OPTION
4470 do_spec_1 (" ", 0, NULL);
4472 do_spec_1 (pl->prefix, 1, NULL);
4473 do_spec_1 (multi_dir, 1, NULL);
4474 /* Make this a separate argument. */
4475 do_spec_1 (" ", 0, NULL);
4481 if (is_directory (pl->prefix, machine_suffix, 1))
4483 do_spec_1 ("-L", 0, NULL);
4484 #ifdef SPACE_AFTER_L_OPTION
4485 do_spec_1 (" ", 0, NULL);
4487 do_spec_1 (pl->prefix, 1, NULL);
4488 /* Remove slash from machine_suffix. */
4489 if (strlen (machine_suffix) >= bufsize)
4490 bufsize = strlen (machine_suffix) * 2 + 1;
4491 buffer = (char *) xrealloc (buffer, bufsize);
4492 strcpy (buffer, machine_suffix);
4493 idx = strlen (buffer);
4494 if (IS_DIR_SEPARATOR (buffer[idx - 1]))
4495 buffer[idx - 1] = 0;
4496 do_spec_1 (buffer, 1, NULL);
4497 /* Make this a separate argument. */
4498 do_spec_1 (" ", 0, NULL);
4501 if (!pl->require_machine_suffix)
4503 if (is_directory (pl->prefix, "", 1))
4505 do_spec_1 ("-L", 0, NULL);
4506 #ifdef SPACE_AFTER_L_OPTION
4507 do_spec_1 (" ", 0, NULL);
4509 /* Remove slash from pl->prefix. */
4510 if (strlen (pl->prefix) >= bufsize)
4511 bufsize = strlen (pl->prefix) * 2 + 1;
4512 buffer = (char *) xrealloc (buffer, bufsize);
4513 strcpy (buffer, pl->prefix);
4514 idx = strlen (buffer);
4515 if (IS_DIR_SEPARATOR (buffer[idx - 1]))
4516 buffer[idx - 1] = 0;
4517 do_spec_1 (buffer, 1, NULL);
4518 /* Make this a separate argument. */
4519 do_spec_1 (" ", 0, NULL);
4528 /* %efoo means report an error with `foo' as error message
4529 and don't execute any more commands for this file. */
4533 while (*p != 0 && *p != '\n')
4535 buf = (char *) alloca (p - q + 1);
4536 strncpy (buf, q, p - q);
4543 /* %nfoo means report a notice with `foo' on stderr. */
4547 while (*p != 0 && *p != '\n')
4549 buf = (char *) alloca (p - q + 1);
4550 strncpy (buf, q, p - q);
4552 notice ("%s\n", buf);
4562 /* If save_temps_flag is off, and the HOST_BIT_BUCKET is
4563 defined, and it is not a directory, and it is
4564 writable, use it. Otherwise, treat this like any
4565 other temporary file. */
4567 if ((!save_temps_flag)
4568 && (stat (HOST_BIT_BUCKET, &st) == 0) && (!S_ISDIR (st.st_mode))
4569 && (access (HOST_BIT_BUCKET, W_OK) == 0))
4571 obstack_grow (&obstack, HOST_BIT_BUCKET,
4572 strlen (HOST_BIT_BUCKET));
4573 delete_this_arg = 0;
4578 goto create_temp_file;
4582 obstack_1grow (&obstack, '-');
4583 delete_this_arg = 0;
4586 /* consume suffix */
4587 while (*p == '.' || ISALPHA ((unsigned char) *p))
4589 if (p[0] == '%' && p[1] == 'O')
4594 goto create_temp_file;
4598 /* consume suffix */
4599 while (*p == '.' || ISALPHA ((unsigned char) *p))
4601 if (p[0] == '%' && p[1] == 'O')
4606 goto create_temp_file;
4612 struct temp_name *t;
4614 const char *suffix = p;
4615 char *saved_suffix = NULL;
4617 while (*p == '.' || ISALPHA ((unsigned char) *p))
4619 suffix_length = p - suffix;
4620 if (p[0] == '%' && p[1] == 'O')
4623 /* We don't support extra suffix characters after %O. */
4624 if (*p == '.' || ISALPHA ((unsigned char) *p))
4626 if (suffix_length == 0)
4627 suffix = TARGET_OBJECT_SUFFIX;
4631 = (char *) xmalloc (suffix_length
4632 + strlen (TARGET_OBJECT_SUFFIX));
4633 strncpy (saved_suffix, suffix, suffix_length);
4634 strcpy (saved_suffix + suffix_length,
4635 TARGET_OBJECT_SUFFIX);
4637 suffix_length += strlen (TARGET_OBJECT_SUFFIX);
4640 /* If the input_filename has the same suffix specified
4641 for the %g, %u, or %U, and -save-temps is specified,
4642 we could end up using that file as an intermediate
4643 thus clobbering the user's source file (.e.g.,
4644 gcc -save-temps foo.s would clobber foo.s with the
4645 output of cpp0). So check for this condition and
4646 generate a temp file as the intermediate. */
4648 if (save_temps_flag)
4650 temp_filename_length = basename_length + suffix_length;
4651 temp_filename = alloca (temp_filename_length + 1);
4652 strncpy ((char *) temp_filename, input_basename, basename_length);
4653 strncpy ((char *) temp_filename + basename_length, suffix,
4655 *((char *) temp_filename + temp_filename_length) = '\0';
4656 if (strcmp (temp_filename, input_filename) != 0)
4658 struct stat st_temp;
4660 /* Note, set_input() resets input_stat_set to 0. */
4661 if (input_stat_set == 0)
4663 input_stat_set = stat (input_filename, &input_stat);
4664 if (input_stat_set >= 0)
4668 /* If we have the stat for the input_filename
4669 and we can do the stat for the temp_filename
4670 then the they could still refer to the same
4671 file if st_dev/st_ino's are the same. */
4673 if (input_stat_set != 1
4674 || stat (temp_filename, &st_temp) < 0
4675 || input_stat.st_dev != st_temp.st_dev
4676 || input_stat.st_ino != st_temp.st_ino)
4678 temp_filename = save_string (temp_filename,
4679 temp_filename_length + 1);
4680 obstack_grow (&obstack, temp_filename,
4681 temp_filename_length);
4683 delete_this_arg = 0;
4689 /* See if we already have an association of %g/%u/%U and
4691 for (t = temp_names; t; t = t->next)
4692 if (t->length == suffix_length
4693 && strncmp (t->suffix, suffix, suffix_length) == 0
4694 && t->unique == (c == 'u' || c == 'j'))
4697 /* Make a new association if needed. %u and %j
4699 if (t == 0 || c == 'u' || c == 'j')
4703 t = (struct temp_name *) xmalloc (sizeof (struct temp_name));
4704 t->next = temp_names;
4707 t->length = suffix_length;
4710 t->suffix = saved_suffix;
4711 saved_suffix = NULL;
4714 t->suffix = save_string (suffix, suffix_length);
4715 t->unique = (c == 'u' || c == 'j');
4716 temp_filename = make_temp_file (t->suffix);
4717 temp_filename_length = strlen (temp_filename);
4718 t->filename = temp_filename;
4719 t->filename_length = temp_filename_length;
4723 free (saved_suffix);
4725 obstack_grow (&obstack, t->filename, t->filename_length);
4726 delete_this_arg = 1;
4732 obstack_grow (&obstack, input_filename, input_filename_length);
4738 struct prefix_list *pl = include_prefixes.plist;
4740 if (gcc_exec_prefix)
4742 do_spec_1 ("-iprefix", 1, NULL);
4743 /* Make this a separate argument. */
4744 do_spec_1 (" ", 0, NULL);
4745 do_spec_1 (gcc_exec_prefix, 1, NULL);
4746 do_spec_1 (" ", 0, NULL);
4749 for (; pl; pl = pl->next)
4751 do_spec_1 ("-isystem", 1, NULL);
4752 /* Make this a separate argument. */
4753 do_spec_1 (" ", 0, NULL);
4754 do_spec_1 (pl->prefix, 1, NULL);
4755 do_spec_1 (" ", 0, NULL);
4762 int max = n_infiles;
4763 max += lang_specific_extra_outfiles;
4765 for (i = 0; i < max; i++)
4767 store_arg (outfiles[i], 0, 0);
4772 obstack_grow (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX));
4777 this_is_library_file = 1;
4781 outfiles[input_file_number] = NULL;
4785 this_is_output_file = 1;
4790 int cur_index = argbuf_index;
4791 /* Handle the {...} following the %W. */
4794 p = handle_braces (p + 1);
4797 /* End any pending argument. */
4800 obstack_1grow (&obstack, 0);
4801 string = obstack_finish (&obstack);
4802 if (this_is_library_file)
4803 string = find_file (string);
4804 store_arg (string, delete_this_arg, this_is_output_file);
4805 if (this_is_output_file)
4806 outfiles[input_file_number] = string;
4809 /* If any args were output, mark the last one for deletion
4811 if (argbuf_index != cur_index)
4812 record_temp_file (argbuf[argbuf_index - 1], 0, 1);
4816 /* %x{OPTION} records OPTION for %X to output. */
4822 /* Skip past the option value and make a copy. */
4827 string = save_string (p1 + 1, p - p1 - 2);
4829 /* See if we already recorded this option. */
4830 for (i = 0; i < n_linker_options; i++)
4831 if (! strcmp (string, linker_options[i]))
4837 /* This option is new; add it. */
4838 add_linker_option (string, strlen (string));
4842 /* Dump out the options accumulated previously using %x. */
4844 for (i = 0; i < n_linker_options; i++)
4846 do_spec_1 (linker_options[i], 1, NULL);
4847 /* Make each accumulated option a separate argument. */
4848 do_spec_1 (" ", 0, NULL);
4852 /* Dump out the options accumulated previously using -Wa,. */
4854 for (i = 0; i < n_assembler_options; i++)
4856 do_spec_1 (assembler_options[i], 1, NULL);
4857 /* Make each accumulated option a separate argument. */
4858 do_spec_1 (" ", 0, NULL);
4862 /* Dump out the options accumulated previously using -Wp,. */
4864 for (i = 0; i < n_preprocessor_options; i++)
4866 do_spec_1 (preprocessor_options[i], 1, NULL);
4867 /* Make each accumulated option a separate argument. */
4868 do_spec_1 (" ", 0, NULL);
4872 /* Here are digits and numbers that just process
4873 a certain constant string as a spec. */
4876 value = do_spec_1 (cc1_spec, 0, NULL);
4882 value = do_spec_1 (cc1plus_spec, 0, NULL);
4888 value = do_spec_1 (asm_spec, 0, NULL);
4894 value = do_spec_1 (asm_final_spec, 0, NULL);
4901 const char *const spec
4902 = (input_file_compiler->cpp_spec
4903 ? input_file_compiler->cpp_spec
4905 value = do_spec_1 (spec, 0, NULL);
4912 value = do_spec_1 (endfile_spec, 0, NULL);
4918 value = do_spec_1 (link_spec, 0, NULL);
4924 value = do_spec_1 (lib_spec, 0, NULL);
4930 value = do_spec_1 (libgcc_spec, 0, NULL);
4936 if (multilib_dir && strcmp (multilib_dir, ".") != 0)
4942 len = strlen (multilib_dir);
4943 obstack_blank (&obstack, len + 1);
4944 p = obstack_next_free (&obstack) - (len + 1);
4947 for (q = multilib_dir; *q ; ++q, ++p)
4948 *p = (IS_DIR_SEPARATOR (*q) ? '_' : *q);
4954 char *x = (char *) alloca (strlen (cpp_predefines) + 1);
4958 /* Copy all of the -D options in CPP_PREDEFINES into BUF. */
4962 if (! strncmp (y, "-D", 2))
4963 /* Copy the whole option. */
4964 while (*y && *y != ' ' && *y != '\t')
4966 else if (*y == ' ' || *y == '\t')
4967 /* Copy whitespace to the result. */
4969 /* Don't copy other options. */
4976 value = do_spec_1 (buf, 0, NULL);
4984 char *x = (char *) alloca (strlen (cpp_predefines) * 4 + 1);
4988 /* Copy all of CPP_PREDEFINES into BUF,
4989 but force them all into the reserved name space if they
4990 aren't already there. The reserved name space is all
4991 identifiers beginning with two underscores or with one
4992 underscore and a capital letter. We do the forcing by
4993 adding up to two underscores to the beginning and end
4994 of each symbol. e.g. mips, _mips, mips_, and _mips_ all
4999 if (! strncmp (y, "-D", 2))
5008 && ! ISUPPER ((unsigned char) *(y + 1))))
5010 /* Stick __ at front of macro name. */
5014 /* Arrange to stick __ at the end as well. */
5018 /* Copy the macro name. */
5019 while (*y && *y != '=' && *y != ' ' && *y != '\t')
5032 /* Copy the value given, if any. */
5033 while (*y && *y != ' ' && *y != '\t')
5036 else if (*y == ' ' || *y == '\t')
5037 /* Copy whitespace to the result. */
5039 /* Don't copy -A options */
5045 /* Copy all of CPP_PREDEFINES into BUF,
5046 but put __ after every -D. */
5050 if (! strncmp (y, "-D", 2))
5056 && ! ISUPPER ((unsigned char) *(y + 1))))
5058 /* Stick -D__ at front of macro name. */
5065 /* Copy the macro name. */
5066 while (*y && *y != '=' && *y != ' ' && *y != '\t')
5069 /* Copy the value given, if any. */
5070 while (*y && *y != ' ' && *y != '\t')
5075 /* Do not copy this macro - we have just done it before */
5076 while (*y && *y != ' ' && *y != '\t')
5080 else if (*y == ' ' || *y == '\t')
5081 /* Copy whitespace to the result. */
5083 /* Don't copy -A options. */
5089 /* Copy all of the -A options in CPP_PREDEFINES into BUF. */
5093 if (! strncmp (y, "-A", 2))
5094 /* Copy the whole option. */
5095 while (*y && *y != ' ' && *y != '\t')
5097 else if (*y == ' ' || *y == '\t')
5098 /* Copy whitespace to the result. */
5100 /* Don't copy other options. */
5107 value = do_spec_1 (buf, 0, NULL);
5114 /* We assume there is a directory
5115 separator at the end of this string. */
5116 if (target_system_root)
5117 obstack_grow (&obstack, target_system_root,
5118 strlen (target_system_root));
5122 value = do_spec_1 (startfile_spec, 0, NULL);
5127 /* Here we define characters other than letters and digits. */
5130 p = handle_braces (p);
5136 p = handle_spec_function (p);
5142 obstack_1grow (&obstack, '%');
5149 while (p[len] && p[len] != ' ' && p[len] != '%')
5151 suffix_subst = save_string (p - 1, len + 1);
5156 /* Henceforth ignore the option(s) matching the pattern
5161 int have_wildcard = 0;
5164 while (p[len] && p[len] != ' ' && p[len] != '\t')
5167 if (p[len-1] == '*')
5170 for (i = 0; i < n_switches; i++)
5171 if (!strncmp (switches[i].part1, p, len - have_wildcard)
5172 && (have_wildcard || switches[i].part1[len] == '\0'))
5174 switches[i].live_cond = SWITCH_IGNORE;
5175 switches[i].validated = 1;
5183 if (soft_matched_part)
5185 do_spec_1 (soft_matched_part, 1, NULL);
5186 do_spec_1 (" ", 0, NULL);
5189 /* Catch the case where a spec string contains something like
5190 '%{foo:%*}'. ie there is no * in the pattern on the left
5191 hand side of the :. */
5192 error ("spec failure: '%%*' has not been initialized by pattern match");
5195 /* Process a string found as the value of a spec given by name.
5196 This feature allows individual machine descriptions
5197 to add and use their own specs.
5198 %[...] modifies -D options the way %P does;
5199 %(...) uses the spec unmodified. */
5201 error ("warning: use of obsolete %%[ operator in specs");
5204 const char *name = p;
5205 struct spec_list *sl;
5208 /* The string after the S/P is the name of a spec that is to be
5210 while (*p && *p != ')' && *p != ']')
5213 /* See if it's in the list. */
5214 for (len = p - name, sl = specs; sl; sl = sl->next)
5215 if (sl->name_len == len && !strncmp (sl->name, name, len))
5217 name = *(sl->ptr_spec);
5219 notice ("Processing spec %c%s%c, which is '%s'\n",
5220 c, sl->name, (c == '(') ? ')' : ']', name);
5229 value = do_spec_1 (name, 0, NULL);
5235 char *x = (char *) alloca (strlen (name) * 2 + 1);
5237 const char *y = name;
5240 /* Copy all of NAME into BUF, but put __ after
5241 every -D and at the end of each arg. */
5244 if (! strncmp (y, "-D", 2))
5255 && (*y == ' ' || *y == '\t' || *y == '='
5256 || *y == '}' || *y == 0))
5269 value = do_spec_1 (buf, 0, NULL);
5275 /* Discard the closing paren or bracket. */
5283 int c1 = *p++; /* Select first or second version number. */
5284 const char *v = compiler_version;
5286 static const char zeroc = '0';
5288 /* The format of the version string is
5289 ([^0-9]*-)?[0-9]+[.][0-9]+([.][0-9]+)?([- ].*)? */
5291 /* Ignore leading non-digits. i.e. "foo-" in "foo-2.7.2". */
5292 while (! ISDIGIT (*v))
5294 if (v > compiler_version && v[-1] != '-')
5297 /* If desired, advance to second version number. */
5300 /* Set V after the first period. */
5301 while (ISDIGIT (*v))
5308 /* If desired, advance to third version number.
5309 But don't complain if it's not present */
5312 /* Set V after the second period. */
5313 while (ISDIGIT (*v))
5315 if ((*v != 0) && (*v != ' ') && (*v != '.') && (*v != '-'))
5321 /* Set Q at the next period or at the end. */
5323 while (ISDIGIT (*q))
5325 if (*q != 0 && q > v && *q != ' ' && *q != '.' && *q != '-')
5329 /* Put that part into the command. */
5330 obstack_grow (&obstack, v, q - v);
5332 /* Default to "0" */
5333 obstack_grow (&obstack, &zeroc, 1);
5339 error ("spec failure: unrecognized spec option '%c'", c);
5345 /* Backslash: treat next character as ordinary. */
5350 /* Ordinary character: put it into the current argument. */
5351 obstack_1grow (&obstack, c);
5355 /* End of string. If we are processing a spec function, we need to
5356 end any pending argument. */
5357 if (processing_spec_function && arg_going)
5359 obstack_1grow (&obstack, 0);
5360 string = obstack_finish (&obstack);
5361 if (this_is_library_file)
5362 string = find_file (string);
5363 store_arg (string, delete_this_arg, this_is_output_file);
5364 if (this_is_output_file)
5365 outfiles[input_file_number] = string;
5372 /* Look up a spec function. */
5374 static const struct spec_function *
5375 lookup_spec_function (name)
5378 static const struct spec_function * const spec_function_tables[] =
5380 static_spec_functions,
5381 lang_specific_spec_functions,
5383 const struct spec_function *sf;
5386 for (i = 0; i < ARRAY_SIZE (spec_function_tables); i++)
5388 for (sf = spec_function_tables[i]; sf->name != NULL; sf++)
5389 if (strcmp (sf->name, name) == 0)
5396 /* Evaluate a spec function. */
5399 eval_spec_function (func, args)
5400 const char *func, *args;
5402 const struct spec_function *sf;
5403 const char *funcval;
5405 /* Saved spec processing context. */
5406 int save_argbuf_index;
5407 int save_argbuf_length;
5408 const char **save_argbuf;
5411 int save_delete_this_arg;
5412 int save_this_is_output_file;
5413 int save_this_is_library_file;
5414 int save_input_from_pipe;
5415 const char *save_suffix_subst;
5418 sf = lookup_spec_function (func);
5420 fatal ("unknown spec function `%s'", func);
5422 /* Push the spec processing context. */
5423 save_argbuf_index = argbuf_index;
5424 save_argbuf_length = argbuf_length;
5425 save_argbuf = argbuf;
5427 save_arg_going = arg_going;
5428 save_delete_this_arg = delete_this_arg;
5429 save_this_is_output_file = this_is_output_file;
5430 save_this_is_library_file = this_is_library_file;
5431 save_input_from_pipe = input_from_pipe;
5432 save_suffix_subst = suffix_subst;
5434 /* Create a new spec processing context, and build the function
5438 if (do_spec_2 (args) < 0)
5439 fatal ("error in args to spec function `%s'", func);
5441 /* argbuf_index is an index for the next argument to be inserted, and
5442 so contains the count of the args already inserted. */
5444 funcval = (*sf->func) (argbuf_index, argbuf);
5446 /* Pop the spec processing context. */
5447 argbuf_index = save_argbuf_index;
5448 argbuf_length = save_argbuf_length;
5450 argbuf = save_argbuf;
5452 arg_going = save_arg_going;
5453 delete_this_arg = save_delete_this_arg;
5454 this_is_output_file = save_this_is_output_file;
5455 this_is_library_file = save_this_is_library_file;
5456 input_from_pipe = save_input_from_pipe;
5457 suffix_subst = save_suffix_subst;
5462 /* Handle a spec function call of the form:
5466 ARGS is processed as a spec in a separate context and split into an
5467 argument vector in the normal fashion. The function returns a string
5468 containing a spec which we then process in the caller's context, or
5469 NULL if no processing is required. */
5472 handle_spec_function (p)
5476 const char *endp, *funcval;
5479 processing_spec_function++;
5481 /* Get the function name. */
5482 for (endp = p; *endp != '\0'; endp++)
5484 if (*endp == '(') /* ) */
5486 /* Only allow [A-Za-z0-9], -, and _ in function names. */
5487 if (!ISALNUM (*endp) && !(*endp == '-' || *endp == '_'))
5488 fatal ("malformed spec function name");
5490 if (*endp != '(') /* ) */
5491 fatal ("no arguments for spec function");
5492 func = save_string (p, endp - p);
5495 /* Get the arguments. */
5496 for (count = 0; *endp != '\0'; endp++)
5505 else if (*endp == '(') /* ) */
5510 fatal ("malformed spec function arguments");
5511 args = save_string (p, endp - p);
5514 /* p now points to just past the end of the spec function expression. */
5516 funcval = eval_spec_function (func, args);
5517 if (funcval != NULL && do_spec_1 (funcval, 0, NULL) < 0)
5523 processing_spec_function--;
5528 /* Inline subroutine of handle_braces. Returns true if the current
5529 input suffix matches the atom bracketed by ATOM and END_ATOM. */
5531 input_suffix_matches (atom, end_atom)
5533 const char *end_atom;
5535 return (input_suffix
5536 && !strncmp (input_suffix, atom, end_atom - atom)
5537 && input_suffix[end_atom - atom] == '\0');
5540 /* Inline subroutine of handle_braces. Returns true if a switch
5541 matching the atom bracketed by ATOM and END_ATOM appeared on the
5544 switch_matches (atom, end_atom, starred)
5546 const char *end_atom;
5550 int len = end_atom - atom;
5551 int plen = starred ? len : -1;
5553 for (i = 0; i < n_switches; i++)
5554 if (!strncmp (switches[i].part1, atom, len)
5555 && (starred || switches[i].part1[len] == '\0')
5556 && check_live_switch (i, plen))
5562 /* Inline subroutine of handle_braces. Mark all of the switches which
5563 match ATOM (extends to END_ATOM; STARRED indicates whether there
5564 was a star after the atom) for later processing. */
5566 mark_matching_switches (atom, end_atom, starred)
5568 const char *end_atom;
5572 int len = end_atom - atom;
5573 int plen = starred ? len : -1;
5575 for (i = 0; i < n_switches; i++)
5576 if (!strncmp (switches[i].part1, atom, len)
5577 && (starred || switches[i].part1[len] == '\0')
5578 && check_live_switch (i, plen))
5579 switches[i].ordering = 1;
5582 /* Inline subroutine of handle_braces. Process all the currently
5583 marked switches through give_switch, and clear the marks. */
5585 process_marked_switches ()
5589 for (i = 0; i < n_switches; i++)
5590 if (switches[i].ordering == 1)
5592 switches[i].ordering = 0;
5597 /* Handle a %{ ... } construct. P points just inside the leading {.
5598 Returns a pointer one past the end of the brace block, or 0
5599 if we call do_spec_1 and that returns -1. */
5605 const char *atom, *end_atom;
5606 const char *d_atom = NULL, *d_end_atom = NULL;
5613 bool a_must_be_last = false;
5614 bool ordered_set = false;
5615 bool disjunct_set = false;
5616 bool disj_matched = false;
5617 bool disj_starred = true;
5618 bool n_way_choice = false;
5619 bool n_way_matched = false;
5621 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
5628 /* Scan one "atom" (S in the description above of %{}, possibly
5629 with !, ., or * modifiers). */
5630 a_matched = a_is_suffix = a_is_starred = a_is_negated = false;
5634 p++, a_is_negated = true;
5638 p++, a_is_suffix = true;
5641 while (ISIDNUM(*p) || *p == '-' || *p == '+' || *p == '='
5642 || *p == ',' || *p == '.' || *p == '@')
5647 p++, a_is_starred = 1;
5650 if (*p == '&' || *p == '}')
5652 /* Substitute the switch(es) indicated by the current atom. */
5654 if (disjunct_set || n_way_choice || a_is_negated || a_is_suffix
5655 || atom == end_atom)
5658 mark_matching_switches (atom, end_atom, a_is_starred);
5661 process_marked_switches ();
5663 else if (*p == '|' || *p == ':')
5665 /* Substitute some text if the current atom appears as a switch
5667 disjunct_set = true;
5671 if (atom == end_atom)
5673 if (!n_way_choice || disj_matched || *p == '|'
5674 || a_is_negated || a_is_suffix || a_is_starred)
5677 /* An empty term may appear as the last choice of an
5678 N-way choice set; it means "otherwise". */
5679 a_must_be_last = true;
5680 disj_matched = !n_way_matched;
5681 disj_starred = false;
5685 if (a_is_suffix && a_is_starred)
5689 disj_starred = false;
5691 /* Don't bother testing this atom if we already have a
5693 if (!disj_matched && !n_way_matched)
5696 a_matched = input_suffix_matches (atom, end_atom);
5698 a_matched = switch_matches (atom, end_atom, a_is_starred);
5700 if (a_matched != a_is_negated)
5702 disj_matched = true;
5704 d_end_atom = end_atom;
5711 /* Found the body, that is, the text to substitute if the
5712 current disjunction matches. */
5713 p = process_brace_body (p + 1, d_atom, d_end_atom, disj_starred,
5714 disj_matched && !n_way_matched);
5718 /* If we have an N-way choice, reset state for the next
5722 n_way_choice = true;
5723 n_way_matched |= disj_matched;
5724 disj_matched = false;
5725 disj_starred = true;
5726 d_atom = d_end_atom = NULL;
5733 while (*p++ != '}');
5740 /* Subroutine of handle_braces. Scan and process a brace substitution body
5741 (X in the description of %{} syntax). P points one past the colon;
5742 ATOM and END_ATOM bracket the first atom which was found to be true
5743 (present) in the current disjunction; STARRED indicates whether all
5744 the atoms in the current disjunction were starred (for syntax validation);
5745 MATCHED indicates whether the disjunction matched or not, and therefore
5746 whether or not the body is to be processed through do_spec_1 or just
5747 skipped. Returns a pointer to the closing } or ;, or 0 if do_spec_1
5751 process_brace_body (p, atom, end_atom, starred, matched)
5754 const char *end_atom;
5758 const char *body, *end_body;
5759 unsigned int nesting_level;
5760 bool have_subst = false;
5762 /* Locate the closing } or ;, honoring nested braces.
5763 Trim trailing whitespace. */
5772 if (!--nesting_level)
5775 else if (*p == ';' && nesting_level == 1)
5777 else if (*p == '%' && p[1] == '*' && nesting_level == 1)
5779 else if (*p == '\0')
5785 while (end_body[-1] == ' ' || end_body[-1] == '\t')
5788 if (have_subst && !starred)
5793 /* Copy the substitution body to permanent storage and execute it.
5794 If have_subst is false, this is a simple matter of running the
5795 body through do_spec_1... */
5796 char *string = save_string (body, end_body - body);
5799 if (do_spec_1 (string, 0, NULL) < 0)
5804 /* ... but if have_subst is true, we have to process the
5805 body once for each matching switch, with %* set to the
5806 variant part of the switch. */
5807 unsigned int hard_match_len = end_atom - atom;
5810 for (i = 0; i < n_switches; i++)
5811 if (!strncmp (switches[i].part1, atom, hard_match_len)
5812 && check_live_switch (i, hard_match_len))
5814 if (do_spec_1 (string, 0,
5815 &switches[i].part1[hard_match_len]) < 0)
5817 /* Pass any arguments this switch has. */
5819 suffix_subst = NULL;
5827 /* Return 0 iff switch number SWITCHNUM is obsoleted by a later switch
5828 on the command line. PREFIX_LENGTH is the length of XXX in an {XXX*}
5829 spec, or -1 if either exact match or %* is used.
5831 A -O switch is obsoleted by a later -O switch. A -f, -m, or -W switch
5832 whose value does not begin with "no-" is obsoleted by the same value
5833 with the "no-", similarly for a switch with the "no-" prefix. */
5836 check_live_switch (switchnum, prefix_length)
5840 const char *name = switches[switchnum].part1;
5843 /* In the common case of {<at-most-one-letter>*}, a negating
5844 switch would always match, so ignore that case. We will just
5845 send the conflicting switches to the compiler phase. */
5846 if (prefix_length >= 0 && prefix_length <= 1)
5849 /* If we already processed this switch and determined if it was
5850 live or not, return our past determination. */
5851 if (switches[switchnum].live_cond != 0)
5852 return switches[switchnum].live_cond > 0;
5854 /* Now search for duplicate in a manner that depends on the name. */
5858 for (i = switchnum + 1; i < n_switches; i++)
5859 if (switches[i].part1[0] == 'O')
5861 switches[switchnum].validated = 1;
5862 switches[switchnum].live_cond = SWITCH_FALSE;
5867 case 'W': case 'f': case 'm':
5868 if (! strncmp (name + 1, "no-", 3))
5870 /* We have Xno-YYY, search for XYYY. */
5871 for (i = switchnum + 1; i < n_switches; i++)
5872 if (switches[i].part1[0] == name[0]
5873 && ! strcmp (&switches[i].part1[1], &name[4]))
5875 switches[switchnum].validated = 1;
5876 switches[switchnum].live_cond = SWITCH_FALSE;
5882 /* We have XYYY, search for Xno-YYY. */
5883 for (i = switchnum + 1; i < n_switches; i++)
5884 if (switches[i].part1[0] == name[0]
5885 && switches[i].part1[1] == 'n'
5886 && switches[i].part1[2] == 'o'
5887 && switches[i].part1[3] == '-'
5888 && !strcmp (&switches[i].part1[4], &name[1]))
5890 switches[switchnum].validated = 1;
5891 switches[switchnum].live_cond = SWITCH_FALSE;
5898 /* Otherwise the switch is live. */
5899 switches[switchnum].live_cond = SWITCH_LIVE;
5903 /* Pass a switch to the current accumulating command
5904 in the same form that we received it.
5905 SWITCHNUM identifies the switch; it is an index into
5906 the vector of switches gcc received, which is `switches'.
5907 This cannot fail since it never finishes a command line.
5909 If OMIT_FIRST_WORD is nonzero, then we omit .part1 of the argument. */
5912 give_switch (switchnum, omit_first_word)
5914 int omit_first_word;
5916 if (switches[switchnum].live_cond == SWITCH_IGNORE)
5919 if (!omit_first_word)
5921 do_spec_1 ("-", 0, NULL);
5922 do_spec_1 (switches[switchnum].part1, 1, NULL);
5925 if (switches[switchnum].args != 0)
5928 for (p = switches[switchnum].args; *p; p++)
5930 const char *arg = *p;
5932 do_spec_1 (" ", 0, NULL);
5935 unsigned length = strlen (arg);
5938 while (length-- && !IS_DIR_SEPARATOR (arg[length]))
5939 if (arg[length] == '.')
5941 ((char *)arg)[length] = 0;
5945 do_spec_1 (arg, 1, NULL);
5947 ((char *)arg)[length] = '.';
5948 do_spec_1 (suffix_subst, 1, NULL);
5951 do_spec_1 (arg, 1, NULL);
5955 do_spec_1 (" ", 0, NULL);
5956 switches[switchnum].validated = 1;
5959 /* Search for a file named NAME trying various prefixes including the
5960 user's -B prefix and some standard ones.
5961 Return the absolute file name found. If nothing is found, return NAME. */
5969 /* Try multilib_dir if it is defined. */
5970 if (multilib_os_dir != NULL)
5972 newname = find_a_file (&startfile_prefixes, name, R_OK, 1);
5974 /* If we don't find it in the multi library dir, then fall
5975 through and look for it in the normal places. */
5976 if (newname != NULL)
5980 newname = find_a_file (&startfile_prefixes, name, R_OK, 0);
5981 return newname ? newname : name;
5984 /* Determine whether a directory exists. If LINKER, return 0 for
5985 certain fixed names not needed by the linker. If not LINKER, it is
5986 only important to return 0 if the host machine has a small ARG_MAX
5990 is_directory (path1, path2, linker)
5995 int len1 = strlen (path1);
5996 int len2 = strlen (path2);
5997 char *path = (char *) alloca (3 + len1 + len2);
6001 #ifndef SMALL_ARG_MAX
6006 /* Construct the path from the two parts. Ensure the string ends with "/.".
6007 The resulting path will be a directory even if the given path is a
6009 memcpy (path, path1, len1);
6010 memcpy (path + len1, path2, len2);
6011 cp = path + len1 + len2;
6012 if (!IS_DIR_SEPARATOR (cp[-1]))
6013 *cp++ = DIR_SEPARATOR;
6017 /* Exclude directories that the linker is known to search. */
6020 && strcmp (path, concat (dir_separator_str, "lib",
6021 dir_separator_str, ".", NULL)) == 0)
6023 && strcmp (path, concat (dir_separator_str, "usr",
6024 dir_separator_str, "lib",
6025 dir_separator_str, ".", NULL)) == 0)))
6028 return (stat (path, &st) >= 0 && S_ISDIR (st.st_mode));
6031 /* Set up the various global variables to indicate that we're processing
6032 the input file named FILENAME. */
6035 set_input (filename)
6036 const char *filename;
6040 input_filename = filename;
6041 input_filename_length = strlen (input_filename);
6043 input_basename = input_filename;
6044 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
6045 /* Skip drive name so 'x:foo' is handled properly. */
6046 if (input_basename[1] == ':')
6047 input_basename += 2;
6049 for (p = input_basename; *p; p++)
6050 if (IS_DIR_SEPARATOR (*p))
6051 input_basename = p + 1;
6053 /* Find a suffix starting with the last period,
6054 and set basename_length to exclude that suffix. */
6055 basename_length = strlen (input_basename);
6056 suffixed_basename_length = basename_length;
6057 p = input_basename + basename_length;
6058 while (p != input_basename && *p != '.')
6060 if (*p == '.' && p != input_basename)
6062 basename_length = p - input_basename;
6063 input_suffix = p + 1;
6068 /* If a spec for 'g', 'u', or 'U' is seen with -save-temps then
6069 we will need to do a stat on the input_filename. The
6070 INPUT_STAT_SET signals that the stat is needed. */
6074 /* On fatal signals, delete all the temporary files. */
6077 fatal_error (signum)
6080 signal (signum, SIG_DFL);
6081 delete_failure_queue ();
6082 delete_temp_files ();
6083 /* Get the same signal again, this time not handled,
6084 so its normal effect occurs. */
6085 kill (getpid (), signum);
6088 extern int main PARAMS ((int, const char *const *));
6093 const char *const *argv;
6097 int linker_was_run = 0;
6098 int num_linker_inputs = 0;
6099 char *explicit_link_files;
6102 struct user_specs *uptr;
6104 p = argv[0] + strlen (argv[0]);
6105 while (p != argv[0] && !IS_DIR_SEPARATOR (p[-1]))
6109 xmalloc_set_program_name (programname);
6111 #ifdef GCC_DRIVER_HOST_INITIALIZATION
6112 /* Perform host dependent initialization when needed. */
6113 GCC_DRIVER_HOST_INITIALIZATION;
6116 gcc_init_libintl ();
6118 if (signal (SIGINT, SIG_IGN) != SIG_IGN)
6119 signal (SIGINT, fatal_error);
6121 if (signal (SIGHUP, SIG_IGN) != SIG_IGN)
6122 signal (SIGHUP, fatal_error);
6124 if (signal (SIGTERM, SIG_IGN) != SIG_IGN)
6125 signal (SIGTERM, fatal_error);
6127 if (signal (SIGPIPE, SIG_IGN) != SIG_IGN)
6128 signal (SIGPIPE, fatal_error);
6131 /* We *MUST* set SIGCHLD to SIG_DFL so that the wait4() call will
6132 receive the signal. A different setting is inheritable */
6133 signal (SIGCHLD, SIG_DFL);
6136 /* Allocate the argument vector. */
6139 obstack_init (&obstack);
6141 /* Build multilib_select, et. al from the separate lines that make up each
6142 multilib selection. */
6144 const char *const *q = multilib_raw;
6147 obstack_init (&multilib_obstack);
6148 while ((p = *q++) != (char *) 0)
6149 obstack_grow (&multilib_obstack, p, strlen (p));
6151 obstack_1grow (&multilib_obstack, 0);
6152 multilib_select = obstack_finish (&multilib_obstack);
6154 q = multilib_matches_raw;
6155 while ((p = *q++) != (char *) 0)
6156 obstack_grow (&multilib_obstack, p, strlen (p));
6158 obstack_1grow (&multilib_obstack, 0);
6159 multilib_matches = obstack_finish (&multilib_obstack);
6161 q = multilib_exclusions_raw;
6162 while ((p = *q++) != (char *) 0)
6163 obstack_grow (&multilib_obstack, p, strlen (p));
6165 obstack_1grow (&multilib_obstack, 0);
6166 multilib_exclusions = obstack_finish (&multilib_obstack);
6169 for (i = 0; i < ARRAY_SIZE (multilib_defaults_raw); i++)
6172 obstack_1grow (&multilib_obstack, ' ');
6173 obstack_grow (&multilib_obstack,
6174 multilib_defaults_raw[i],
6175 strlen (multilib_defaults_raw[i]));
6179 obstack_1grow (&multilib_obstack, 0);
6180 multilib_defaults = obstack_finish (&multilib_obstack);
6183 /* Set up to remember the pathname of gcc and any options
6184 needed for collect. We use argv[0] instead of programname because
6185 we need the complete pathname. */
6186 obstack_init (&collect_obstack);
6187 obstack_grow (&collect_obstack, "COLLECT_GCC=", sizeof ("COLLECT_GCC=") - 1);
6188 obstack_grow (&collect_obstack, argv[0], strlen (argv[0]) + 1);
6189 putenv (obstack_finish (&collect_obstack));
6191 #ifdef INIT_ENVIRONMENT
6192 /* Set up any other necessary machine specific environment variables. */
6193 putenv (INIT_ENVIRONMENT);
6196 /* Make a table of what switches there are (switches, n_switches).
6197 Make a table of specified input files (infiles, n_infiles).
6198 Decode switches that are handled locally. */
6200 process_command (argc, argv);
6202 /* Initialize the vector of specs to just the default.
6203 This means one element containing 0s, as a terminator. */
6205 compilers = (struct compiler *) xmalloc (sizeof default_compilers);
6206 memcpy ((char *) compilers, (char *) default_compilers,
6207 sizeof default_compilers);
6208 n_compilers = n_default_compilers;
6210 /* Read specs from a file if there is one. */
6212 machine_suffix = concat (spec_machine, dir_separator_str,
6213 spec_version, dir_separator_str, NULL);
6214 just_machine_suffix = concat (spec_machine, dir_separator_str, NULL);
6216 specs_file = find_a_file (&startfile_prefixes, "specs", R_OK, 0);
6217 /* Read the specs file unless it is a default one. */
6218 if (specs_file != 0 && strcmp (specs_file, "specs"))
6219 read_specs (specs_file, TRUE);
6223 /* We need to check standard_exec_prefix/just_machine_suffix/specs
6224 for any override of as, ld and libraries. */
6225 specs_file = (char *) alloca (strlen (standard_exec_prefix)
6226 + strlen (just_machine_suffix)
6227 + sizeof ("specs"));
6229 strcpy (specs_file, standard_exec_prefix);
6230 strcat (specs_file, just_machine_suffix);
6231 strcat (specs_file, "specs");
6232 if (access (specs_file, R_OK) == 0)
6233 read_specs (specs_file, TRUE);
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, NULL, 0);
6252 /* Look for startfiles in the standard places. */
6253 if (*startfile_prefix_spec != 0
6254 && do_spec_2 (startfile_prefix_spec) == 0
6255 && do_spec_1 (" ", 0, NULL) == 0)
6258 for (ndx = 0; ndx < argbuf_index; ndx++)
6259 add_sysrooted_prefix (&startfile_prefixes, argbuf[ndx], "BINUTILS",
6260 PREFIX_PRIORITY_LAST, 0, NULL, 1);
6262 /* We should eventually get rid of all these and stick to
6263 startfile_prefix_spec exclusively. */
6264 else if (*cross_compile == '0' || target_system_root)
6266 if (*md_exec_prefix)
6267 add_sysrooted_prefix (&startfile_prefixes, md_exec_prefix, "GCC",
6268 PREFIX_PRIORITY_LAST, 0, NULL, 1);
6270 if (*md_startfile_prefix)
6271 add_sysrooted_prefix (&startfile_prefixes, md_startfile_prefix,
6272 "GCC", PREFIX_PRIORITY_LAST, 0, NULL, 1);
6274 if (*md_startfile_prefix_1)
6275 add_sysrooted_prefix (&startfile_prefixes, md_startfile_prefix_1,
6276 "GCC", PREFIX_PRIORITY_LAST, 0, NULL, 1);
6278 /* If standard_startfile_prefix is relative, base it on
6279 standard_exec_prefix. This lets us move the installed tree
6280 as a unit. If GCC_EXEC_PREFIX is defined, base
6281 standard_startfile_prefix on that as well. */
6282 if (IS_ABSOLUTE_PATHNAME (standard_startfile_prefix))
6283 add_sysrooted_prefix (&startfile_prefixes,
6284 standard_startfile_prefix, "BINUTILS",
6285 PREFIX_PRIORITY_LAST, 0, NULL, 1);
6288 if (gcc_exec_prefix)
6289 add_prefix (&startfile_prefixes,
6290 concat (gcc_exec_prefix, machine_suffix,
6291 standard_startfile_prefix, NULL),
6292 NULL, PREFIX_PRIORITY_LAST, 0, NULL, 1);
6293 add_prefix (&startfile_prefixes,
6294 concat (standard_exec_prefix,
6296 standard_startfile_prefix, NULL),
6297 NULL, PREFIX_PRIORITY_LAST, 0, NULL, 1);
6300 add_sysrooted_prefix (&startfile_prefixes, standard_startfile_prefix_1,
6301 "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL, 1);
6302 add_sysrooted_prefix (&startfile_prefixes, standard_startfile_prefix_2,
6303 "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL, 1);
6304 #if 0 /* Can cause surprises, and one can use -B./ instead. */
6305 add_prefix (&startfile_prefixes, "./", NULL,
6306 PREFIX_PRIORITY_LAST, 1, NULL, 0);
6310 /* Process any user specified specs in the order given on the command
6312 for (uptr = user_specs_head; uptr; uptr = uptr->next)
6314 char *filename = find_a_file (&startfile_prefixes, uptr->filename,
6316 read_specs (filename ? filename : uptr->filename, FALSE);
6319 /* If we have a GCC_EXEC_PREFIX envvar, modify it for cpp's sake. */
6320 if (gcc_exec_prefix)
6321 gcc_exec_prefix = concat (gcc_exec_prefix, spec_machine, dir_separator_str,
6322 spec_version, dir_separator_str, NULL);
6324 /* Now we have the specs.
6325 Set the `valid' bits for switches that match anything in any spec. */
6327 validate_all_switches ();
6329 /* Now that we have the switches and the specs, set
6330 the subdirectory based on the options. */
6331 set_multilib_dir ();
6333 /* Warn about any switches that no pass was interested in. */
6335 for (i = 0; (int) i < n_switches; i++)
6336 if (! switches[i].validated)
6337 error ("unrecognized option `-%s'", switches[i].part1);
6339 /* Obey some of the options. */
6341 if (print_search_dirs)
6343 printf (_("install: %s%s\n"), standard_exec_prefix, machine_suffix);
6344 printf (_("programs: %s\n"), build_search_list (&exec_prefixes, "", 0));
6345 printf (_("libraries: %s\n"), build_search_list (&startfile_prefixes, "", 0));
6349 if (print_file_name)
6351 printf ("%s\n", find_file (print_file_name));
6355 if (print_prog_name)
6357 char *newname = find_a_file (&exec_prefixes, print_prog_name, X_OK, 0);
6358 printf ("%s\n", (newname ? newname : print_prog_name));
6362 if (print_multi_lib)
6364 print_multilib_info ();
6368 if (print_multi_directory)
6370 if (multilib_dir == NULL)
6373 printf ("%s\n", multilib_dir);
6377 if (print_multi_os_directory)
6379 if (multilib_os_dir == NULL)
6382 printf ("%s\n", multilib_os_dir);
6386 if (target_help_flag)
6388 /* Print if any target specific options. */
6390 /* We do not exit here. Instead we have created a fake input file
6391 called 'target-dummy' which needs to be compiled, and we pass this
6392 on to the various sub-processes, along with the --target-help
6396 if (print_help_list)
6402 printf (_("\nFor bug reporting instructions, please see:\n"));
6403 printf ("%s.\n", bug_report_url);
6408 /* We do not exit here. Instead we have created a fake input file
6409 called 'help-dummy' which needs to be compiled, and we pass this
6410 on the various sub-processes, along with the --help switch. */
6418 notice ("Configured with: %s\n", configuration_arguments);
6420 #ifdef THREAD_MODEL_SPEC
6421 /* We could have defined THREAD_MODEL_SPEC to "%*" by default,
6422 but there's no point in doing all this processing just to get
6423 thread_model back. */
6424 obstack_init (&obstack);
6425 do_spec_1 (THREAD_MODEL_SPEC, 0, thread_model);
6426 obstack_1grow (&obstack, '\0');
6427 thrmod = obstack_finish (&obstack);
6429 thrmod = thread_model;
6432 notice ("Thread model: %s\n", thrmod);
6434 /* compiler_version is truncated at the first space when initialized
6435 from version string, so truncate version_string at the first space
6436 before comparing. */
6437 for (n = 0; version_string[n]; n++)
6438 if (version_string[n] == ' ')
6441 if (! strncmp (version_string, compiler_version, n)
6442 && compiler_version[n] == 0)
6443 notice ("gcc version %s\n", version_string);
6445 notice ("gcc driver version %s executing gcc version %s\n",
6446 version_string, compiler_version);
6452 if (n_infiles == added_libraries)
6453 fatal ("no input files");
6455 /* Make a place to record the compiler output file names
6456 that correspond to the input files. */
6459 i += lang_specific_extra_outfiles;
6460 outfiles = (const char **) xcalloc (i, sizeof (char *));
6462 /* Record which files were specified explicitly as link input. */
6464 explicit_link_files = xcalloc (1, n_infiles);
6466 for (i = 0; (int) i < n_infiles; i++)
6468 int this_file_error = 0;
6470 /* Tell do_spec what to substitute for %i. */
6472 input_file_number = i;
6473 set_input (infiles[i].name);
6475 /* Use the same thing in %o, unless cp->spec says otherwise. */
6477 outfiles[i] = input_filename;
6479 /* Figure out which compiler from the file's suffix. */
6482 = lookup_compiler (infiles[i].name, input_filename_length,
6483 infiles[i].language);
6485 if (input_file_compiler)
6487 /* Ok, we found an applicable compiler. Run its spec. */
6489 if (input_file_compiler->spec[0] == '#')
6491 error ("%s: %s compiler not installed on this system",
6492 input_filename, &input_file_compiler->spec[1]);
6493 this_file_error = 1;
6497 value = do_spec (input_file_compiler->spec);
6499 this_file_error = 1;
6503 /* If this file's name does not contain a recognized suffix,
6504 record it as explicit linker input. */
6507 explicit_link_files[i] = 1;
6509 /* Clear the delete-on-failure queue, deleting the files in it
6510 if this compilation failed. */
6512 if (this_file_error)
6514 delete_failure_queue ();
6517 /* If this compilation succeeded, don't delete those files later. */
6518 clear_failure_queue ();
6521 /* Reset the output file name to the first input file name, for use
6522 with %b in LINK_SPEC on a target that prefers not to emit a.out
6525 set_input (infiles[0].name);
6527 if (error_count == 0)
6529 /* Make sure INPUT_FILE_NUMBER points to first available open
6531 input_file_number = n_infiles;
6532 if (lang_specific_pre_link ())
6536 /* Determine if there are any linker input files. */
6537 num_linker_inputs = 0;
6538 for (i = 0; (int) i < n_infiles; i++)
6539 if (explicit_link_files[i] || outfiles[i] != NULL)
6540 num_linker_inputs++;
6542 /* Run ld to link all the compiler output files. */
6544 if (num_linker_inputs > 0 && error_count == 0)
6546 int tmp = execution_count;
6548 /* We'll use ld if we can't find collect2. */
6549 if (! strcmp (linker_name_spec, "collect2"))
6551 char *s = find_a_file (&exec_prefixes, "collect2", X_OK, 0);
6553 linker_name_spec = "ld";
6555 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
6557 putenv_from_prefixes (&exec_prefixes, "COMPILER_PATH");
6558 putenv_from_prefixes (&startfile_prefixes, LIBRARY_PATH_ENV);
6560 value = do_spec (link_command_spec);
6563 linker_was_run = (tmp != execution_count);
6566 /* If options said don't run linker,
6567 complain about input files to be given to the linker. */
6569 if (! linker_was_run && error_count == 0)
6570 for (i = 0; (int) i < n_infiles; i++)
6571 if (explicit_link_files[i])
6572 error ("%s: linker input file unused because linking not done",
6575 /* Delete some or all of the temporary files we made. */
6578 delete_failure_queue ();
6579 delete_temp_files ();
6581 if (print_help_list)
6583 printf (("\nFor bug reporting instructions, please see:\n"));
6584 printf ("%s\n", bug_report_url);
6587 return (signal_count != 0 ? 2
6588 : error_count > 0 ? (pass_exit_codes ? greatest_status : 1)
6592 /* Find the proper compilation spec for the file name NAME,
6593 whose length is LENGTH. LANGUAGE is the specified language,
6594 or 0 if this file is to be passed to the linker. */
6596 static struct compiler *
6597 lookup_compiler (name, length, language)
6600 const char *language;
6602 struct compiler *cp;
6604 /* If this was specified by the user to be a linker input, indicate that. */
6605 if (language != 0 && language[0] == '*')
6608 /* Otherwise, look for the language, if one is spec'd. */
6611 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6612 if (cp->suffix[0] == '@' && !strcmp (cp->suffix + 1, language))
6615 error ("language %s not recognized", language);
6619 /* Look for a suffix. */
6620 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6622 if (/* The suffix `-' matches only the file name `-'. */
6623 (!strcmp (cp->suffix, "-") && !strcmp (name, "-"))
6624 || (strlen (cp->suffix) < length
6625 /* See if the suffix matches the end of NAME. */
6626 && !strcmp (cp->suffix,
6627 name + length - strlen (cp->suffix))
6632 #if defined (OS2) ||defined (HAVE_DOS_BASED_FILE_SYSTEM)
6633 /* look again, but case-insensitively this time. */
6635 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6637 if (/* The suffix `-' matches only the file name `-'. */
6638 (!strcmp (cp->suffix, "-") && !strcmp (name, "-"))
6639 || (strlen (cp->suffix) < length
6640 /* See if the suffix matches the end of NAME. */
6641 && ((!strcmp (cp->suffix,
6642 name + length - strlen (cp->suffix))
6643 || !strpbrk (cp->suffix, "ABCDEFGHIJKLMNOPQRSTUVWXYZ"))
6644 && !strcasecmp (cp->suffix,
6645 name + length - strlen (cp->suffix)))
6651 if (cp >= compilers)
6653 if (cp->spec[0] != '@')
6654 /* A non-alias entry: return it. */
6657 /* An alias entry maps a suffix to a language.
6658 Search for the language; pass 0 for NAME and LENGTH
6659 to avoid infinite recursion if language not found. */
6660 return lookup_compiler (NULL, 0, cp->spec + 1);
6666 save_string (s, len)
6670 char *result = xmalloc (len + 1);
6672 memcpy (result, s, len);
6678 pfatal_with_name (name)
6681 perror_with_name (name);
6682 delete_temp_files ();
6687 perror_with_name (name)
6690 error ("%s: %s", name, xstrerror (errno));
6694 pfatal_pexecute (errmsg_fmt, errmsg_arg)
6695 const char *errmsg_fmt;
6696 const char *errmsg_arg;
6700 int save_errno = errno;
6702 /* Space for trailing '\0' is in %s. */
6703 char *msg = xmalloc (strlen (errmsg_fmt) + strlen (errmsg_arg));
6704 sprintf (msg, errmsg_fmt, errmsg_arg);
6710 pfatal_with_name (errmsg_fmt);
6713 /* Output an error message and exit */
6718 fatal ("internal gcc abort");
6721 /* Output an error message and exit */
6724 fatal VPARAMS ((const char *msgid, ...))
6726 VA_OPEN (ap, msgid);
6727 VA_FIXEDARG (ap, const char *, msgid);
6729 fprintf (stderr, "%s: ", programname);
6730 vfprintf (stderr, _(msgid), ap);
6732 fprintf (stderr, "\n");
6733 delete_temp_files ();
6738 error VPARAMS ((const char *msgid, ...))
6740 VA_OPEN (ap, msgid);
6741 VA_FIXEDARG (ap, const char *, msgid);
6743 fprintf (stderr, "%s: ", programname);
6744 vfprintf (stderr, _(msgid), ap);
6747 fprintf (stderr, "\n");
6751 notice VPARAMS ((const char *msgid, ...))
6753 VA_OPEN (ap, msgid);
6754 VA_FIXEDARG (ap, const char *, msgid);
6756 vfprintf (stderr, _(msgid), ap);
6761 validate_switches_from_spec (spec)
6764 const char *p = spec;
6767 if (c == '%' && (*p == '{' || *p == '<' || (*p == 'W' && *++p == '{')))
6768 /* We have a switch spec. */
6769 p = validate_switches (p + 1);
6773 validate_all_switches ()
6775 struct compiler *comp;
6776 struct spec_list *spec;
6778 for (comp = compilers; comp->spec; comp++)
6779 validate_switches_from_spec (comp->spec);
6781 /* Look through the linked list of specs read from the specs file. */
6782 for (spec = specs; spec; spec = spec->next)
6783 validate_switches_from_spec (*spec->ptr_spec);
6785 validate_switches_from_spec (link_command_spec);
6788 /* Look at the switch-name that comes after START
6789 and mark as valid all supplied switches that match it. */
6792 validate_switches (start)
6795 const char *p = start;
6799 bool suffix = false;
6800 bool starred = false;
6802 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
6815 while (ISIDNUM (*p) || *p == '-' || *p == '+' || *p == '='
6816 || *p == ',' || *p == '.' || *p == '@')
6821 starred = true, p++;
6827 /* Mark all matching switches as valid. */
6828 for (i = 0; i < n_switches; i++)
6829 if (!strncmp (switches[i].part1, atom, len)
6830 && (starred || switches[i].part1[len] == 0))
6831 switches[i].validated = 1;
6835 if (*p && (p[-1] == '|' || p[-1] == '&'))
6838 if (*p && p[-1] == ':')
6840 while (*p && *p != ';' && *p != '}')
6845 if (*p == '{' || *p == '<')
6846 p = validate_switches (p+1);
6847 else if (p[0] == 'W' && p[1] == '{')
6848 p = validate_switches (p+2);
6854 if (*p && p[-1] == ';')
6868 static struct mdswitchstr *mdswitches;
6869 static int n_mdswitches;
6871 /* Check whether a particular argument was used. The first time we
6872 canonicalize the switches to keep only the ones we care about. */
6882 const char *replace;
6887 static struct mswitchstr *mswitches;
6888 static int n_mswitches;
6893 struct mswitchstr *matches;
6897 /* Break multilib_matches into the component strings of string
6898 and replacement string. */
6899 for (q = multilib_matches; *q != '\0'; q++)
6904 (struct mswitchstr *) alloca ((sizeof (struct mswitchstr)) * cnt);
6906 q = multilib_matches;
6916 matches[i].len = q - matches[i].str;
6918 matches[i].replace = ++q;
6919 while (*q != ';' && *q != '\0')
6925 matches[i].rep_len = q - matches[i].replace;
6931 /* Now build a list of the replacement string for switches that we care
6932 about. Make sure we allocate at least one entry. This prevents
6933 xmalloc from calling fatal, and prevents us from re-executing this
6936 = (struct mswitchstr *)
6937 xmalloc (sizeof (struct mswitchstr)
6938 * (n_mdswitches + (n_switches ? n_switches : 1)));
6939 for (i = 0; i < n_switches; i++)
6941 int xlen = strlen (switches[i].part1);
6942 for (j = 0; j < cnt; j++)
6943 if (xlen == matches[j].len
6944 && ! strncmp (switches[i].part1, matches[j].str, xlen))
6946 mswitches[n_mswitches].str = matches[j].replace;
6947 mswitches[n_mswitches].len = matches[j].rep_len;
6948 mswitches[n_mswitches].replace = (char *) 0;
6949 mswitches[n_mswitches].rep_len = 0;
6955 /* Add MULTILIB_DEFAULTS switches too, as long as they were not present
6956 on the command line nor any options mutually incompatible with
6958 for (i = 0; i < n_mdswitches; i++)
6962 for (q = multilib_options; *q != '\0'; q++)
6968 while (strncmp (q, mdswitches[i].str, mdswitches[i].len) != 0
6969 || strchr (" /", q[mdswitches[i].len]) == NULL)
6971 while (*q != ' ' && *q != '/' && *q != '\0')
6978 if (*q != ' ' && *q != '\0')
6980 while (*r != ' ' && *r != '\0')
6983 while (*q != ' ' && *q != '/' && *q != '\0')
6986 if (used_arg (r, q - r))
6991 mswitches[n_mswitches].str = mdswitches[i].str;
6992 mswitches[n_mswitches].len = mdswitches[i].len;
6993 mswitches[n_mswitches].replace = (char *) 0;
6994 mswitches[n_mswitches].rep_len = 0;
7007 for (i = 0; i < n_mswitches; i++)
7008 if (len == mswitches[i].len && ! strncmp (p, mswitches[i].str, len))
7015 default_arg (p, len)
7021 for (i = 0; i < n_mdswitches; i++)
7022 if (len == mdswitches[i].len && ! strncmp (p, mdswitches[i].str, len))
7028 /* Work out the subdirectory to use based on the options. The format of
7029 multilib_select is a list of elements. Each element is a subdirectory
7030 name followed by a list of options followed by a semicolon. The format
7031 of multilib_exclusions is the same, but without the preceding
7032 directory. First gcc will check the exclusions, if none of the options
7033 beginning with an exclamation point are present, and all of the other
7034 options are present, then we will ignore this completely. Passing
7035 that, gcc will consider each multilib_select in turn using the same
7036 rules for matching the options. If a match is found, that subdirectory
7043 unsigned int this_path_len;
7044 const char *this_path, *this_arg;
7045 const char *start, *end;
7047 int ok, ndfltok, first;
7050 start = multilib_defaults;
7051 while (*start == ' ' || *start == '\t')
7053 while (*start != '\0')
7056 while (*start != ' ' && *start != '\t' && *start != '\0')
7058 while (*start == ' ' || *start == '\t')
7067 = (struct mdswitchstr *) xmalloc (sizeof (struct mdswitchstr)
7069 for (start = multilib_defaults; *start != '\0'; start = end + 1)
7071 while (*start == ' ' || *start == '\t')
7077 for (end = start + 1;
7078 *end != ' ' && *end != '\t' && *end != '\0'; end++)
7081 obstack_grow (&multilib_obstack, start, end - start);
7082 obstack_1grow (&multilib_obstack, 0);
7083 mdswitches[i].str = obstack_finish (&multilib_obstack);
7084 mdswitches[i++].len = end - start;
7091 p = multilib_exclusions;
7094 /* Ignore newlines. */
7101 /* Check the arguments. */
7115 while (*p != ' ' && *p != ';')
7122 if (*this_arg != '!')
7130 ok = used_arg (this_arg, p - this_arg);
7145 p = multilib_select;
7148 /* Ignore newlines. */
7155 /* Get the initial path. */
7163 this_path_len = p - this_path;
7165 /* Check the arguments. */
7181 while (*p != ' ' && *p != ';')
7188 if (*this_arg != '!')
7196 /* If this is a default argument, we can just ignore it.
7197 This is true even if this_arg begins with '!'. Beginning
7198 with '!' does not mean that this argument is necessarily
7199 inappropriate for this library: it merely means that
7200 there is a more specific library which uses this
7201 argument. If this argument is a default, we need not
7202 consider that more specific library. */
7203 ok = used_arg (this_arg, p - this_arg);
7210 if (default_arg (this_arg, p - this_arg))
7219 if (this_path_len != 1
7220 || this_path[0] != '.')
7222 char *new_multilib_dir = xmalloc (this_path_len + 1);
7225 strncpy (new_multilib_dir, this_path, this_path_len);
7226 new_multilib_dir[this_path_len] = '\0';
7227 q = strchr (new_multilib_dir, ':');
7230 multilib_dir = new_multilib_dir;
7237 const char *q = this_path, *end = this_path + this_path_len;
7239 while (q < end && *q != ':')
7243 char *new_multilib_os_dir = xmalloc (end - q);
7244 memcpy (new_multilib_os_dir, q + 1, end - q - 1);
7245 new_multilib_os_dir[end - q - 1] = '\0';
7246 multilib_os_dir = new_multilib_os_dir;
7254 if (multilib_dir == NULL && multilib_os_dir != NULL
7255 && strcmp (multilib_os_dir, ".") == 0)
7257 free ((char *) multilib_os_dir);
7258 multilib_os_dir = NULL;
7260 else if (multilib_dir != NULL && multilib_os_dir == NULL)
7261 multilib_os_dir = multilib_dir;
7264 /* Print out the multiple library subdirectory selection
7265 information. This prints out a series of lines. Each line looks
7266 like SUBDIRECTORY;@OPTION@OPTION, with as many options as is
7267 required. Only the desired options are printed out, the negative
7268 matches. The options are print without a leading dash. There are
7269 no spaces to make it easy to use the information in the shell.
7270 Each subdirectory is printed only once. This assumes the ordering
7271 generated by the genmultilib script. Also, we leave out ones that match
7275 print_multilib_info ()
7277 const char *p = multilib_select;
7278 const char *last_path = 0, *this_path;
7280 unsigned int last_path_len = 0;
7285 /* Ignore newlines. */
7292 /* Get the initial path. */
7301 /* When --disable-multilib was used but target defines
7302 MULTILIB_OSDIRNAMES, entries starting with .: are there just
7303 to find multilib_os_dir, so skip them from output. */
7304 if (this_path[0] == '.' && this_path[1] == ':')
7307 /* Check for matches with the multilib_exclusions. We don't bother
7308 with the '!' in either list. If any of the exclusion rules match
7309 all of its options with the select rule, we skip it. */
7311 const char *e = multilib_exclusions;
7312 const char *this_arg;
7317 /* Ignore newlines. */
7324 /* Check the arguments. */
7341 while (*e != ' ' && *e != ';')
7352 int len = e - this_arg;
7359 while (*q != ' ' && *q != ';')
7366 if (! strncmp (arg, this_arg, (len < q - arg) ? q - arg : len) ||
7367 default_arg (this_arg, e - this_arg))
7397 /* If this is a duplicate, skip it. */
7398 skip = (last_path != 0 && (unsigned int) (p - this_path) == last_path_len
7399 && ! strncmp (last_path, this_path, last_path_len));
7401 last_path = this_path;
7402 last_path_len = p - this_path;
7405 /* If this directory requires any default arguments, we can skip
7406 it. We will already have printed a directory identical to
7407 this one which does not require that default argument. */
7425 while (*q != ' ' && *q != ';')
7433 && default_arg (arg, q - arg))
7448 for (p1 = last_path; p1 < p && *p1 != ':'; p1++)
7467 use_arg = *p != '!';
7472 while (*p != ' ' && *p != ';')
7487 /* If there are extra options, print them now. */
7488 if (multilib_extra && *multilib_extra)
7490 int print_at = TRUE;
7493 for (q = multilib_extra; *q != '\0'; q++)
7514 /* if-exists built-in spec function.
7516 Checks to see if the file specified by the absolute pathname in
7517 ARGS exists. Returns that pathname if found.
7519 The usual use for this function is to check for a library file
7520 (whose name has been expanded with %s). */
7523 if_exists_spec_function (argc, argv)
7527 /* Must have only one argument. */
7528 if (argc == 1 && IS_ABSOLUTE_PATHNAME (argv[0]) && ! access (argv[0], R_OK))
7534 /* if-exists-else built-in spec function.
7536 This is like if-exists, but takes an additional argument which
7537 is returned if the first argument does not exist. */
7540 if_exists_else_spec_function (argc, argv)
7544 /* Must have exactly two arguments. */
7548 if (IS_ABSOLUTE_PATHNAME (argv[0]) && ! access (argv[0], R_OK))