1 /* Compiler driver program that can handle many languages.
2 Copyright (C) 1987, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
3 1999, 2000, 2001, 2002, 2003 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 #ifdef TARGET_SYSTEM_ROOT
206 static const char *target_system_root = TARGET_SYSTEM_ROOT;
208 static const char *target_system_root = 0;
211 /* Nonzero means pass the updated target_system_root to the compiler. */
213 static int target_system_root_changed;
215 /* Nonzero means write "temp" files in source directory
216 and use the source file's name in them, and don't delete them. */
218 static int save_temps_flag;
220 /* Nonzero means use pipes to communicate between subprocesses.
221 Overridden by either of the above two flags. */
223 static int use_pipes;
225 /* The compiler version. */
227 static const char *compiler_version;
229 /* The target version specified with -V */
231 static const char *const spec_version = DEFAULT_TARGET_VERSION;
233 /* The target machine specified with -b. */
235 static const char *spec_machine = DEFAULT_TARGET_MACHINE;
237 /* Nonzero if cross-compiling.
238 When -b is used, the value comes from the `specs' file. */
241 static const char *cross_compile = "1";
243 static const char *cross_compile = "0";
246 #ifdef MODIFY_TARGET_NAME
248 /* Information on how to alter the target name based on a command-line
249 switch. The only case we support now is simply appending or deleting a
250 string to or from the end of the first part of the configuration name. */
252 static const struct modify_target
254 const char *const sw;
255 const enum add_del {ADD, DELETE} add_del;
256 const char *const str;
258 modify_target[] = MODIFY_TARGET_NAME;
261 /* The number of errors that have occurred; the link phase will not be
262 run if this is nonzero. */
263 static int error_count = 0;
265 /* Greatest exit code of sub-processes that has been encountered up to
267 static int greatest_status = 1;
269 /* This is the obstack which we use to allocate many strings. */
271 static struct obstack obstack;
273 /* This is the obstack to build an environment variable to pass to
274 collect2 that describes all of the relevant switches of what to
275 pass the compiler in building the list of pointers to constructors
278 static struct obstack collect_obstack;
280 /* These structs are used to collect resource usage information for
282 #ifdef HAVE_GETRUSAGE
283 static struct rusage rus, prus;
286 /* Forward declaration for prototypes. */
289 static void init_spec PARAMS ((void));
290 static void store_arg PARAMS ((const char *, int, int));
291 static char *load_specs PARAMS ((const char *));
292 static void read_specs PARAMS ((const char *, int));
293 static void set_spec PARAMS ((const char *, const char *));
294 static struct compiler *lookup_compiler PARAMS ((const char *, size_t, const char *));
295 static char *build_search_list PARAMS ((struct path_prefix *, const char *, int));
296 static void putenv_from_prefixes PARAMS ((struct path_prefix *, const char *));
297 static int access_check PARAMS ((const char *, int));
298 static char *find_a_file PARAMS ((struct path_prefix *, const char *,
300 static void add_prefix PARAMS ((struct path_prefix *, const char *,
301 const char *, int, int, int *, int));
302 static void add_sysrooted_prefix PARAMS ((struct path_prefix *, const char *,
303 const char *, int, int, int *, int));
304 static void translate_options PARAMS ((int *, const char *const **));
305 static char *skip_whitespace PARAMS ((char *));
306 static void delete_if_ordinary PARAMS ((const char *));
307 static void delete_temp_files PARAMS ((void));
308 static void delete_failure_queue PARAMS ((void));
309 static void clear_failure_queue PARAMS ((void));
310 static int check_live_switch PARAMS ((int, int));
311 static const char *handle_braces PARAMS ((const char *));
312 static inline bool input_suffix_matches PARAMS ((const char *,
314 static inline bool switch_matches PARAMS ((const char *,
316 static inline void mark_matching_switches PARAMS ((const char *,
318 static inline void process_marked_switches PARAMS ((void));
319 static const char *process_brace_body PARAMS ((const char *, const char *,
320 const char *, int, int));
321 static const struct spec_function *lookup_spec_function PARAMS ((const char *));
322 static const char *eval_spec_function PARAMS ((const char *, const char *));
323 static const char *handle_spec_function PARAMS ((const char *));
324 static char *save_string PARAMS ((const char *, int));
325 static void set_collect_gcc_options PARAMS ((void));
326 static int do_spec_1 PARAMS ((const char *, int, const char *));
327 static int do_spec_2 PARAMS ((const char *));
328 static void do_option_spec PARAMS ((const char *, const char *));
329 static void do_self_spec PARAMS ((const char *));
330 static const char *find_file PARAMS ((const char *));
331 static int is_directory PARAMS ((const char *, const char *, int));
332 static const char *validate_switches PARAMS ((const char *));
333 static void validate_all_switches PARAMS ((void));
334 static inline void validate_switches_from_spec PARAMS ((const char *));
335 static void give_switch PARAMS ((int, int));
336 static int used_arg PARAMS ((const char *, int));
337 static int default_arg PARAMS ((const char *, int));
338 static void set_multilib_dir PARAMS ((void));
339 static void print_multilib_info PARAMS ((void));
340 static void perror_with_name PARAMS ((const char *));
341 static void pfatal_pexecute PARAMS ((const char *, const char *))
343 static void notice PARAMS ((const char *, ...))
345 static void display_help PARAMS ((void));
346 static void add_preprocessor_option PARAMS ((const char *, int));
347 static void add_assembler_option PARAMS ((const char *, int));
348 static void add_linker_option PARAMS ((const char *, int));
349 static void process_command PARAMS ((int, const char *const *));
350 static int execute PARAMS ((void));
351 static void alloc_args PARAMS ((void));
352 static void clear_args PARAMS ((void));
353 static void fatal_error PARAMS ((int));
354 #ifdef ENABLE_SHARED_LIBGCC
355 static void init_gcc_specs PARAMS ((struct obstack *,
356 const char *, const char *,
359 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
360 static const char *convert_filename PARAMS ((const char *, int, int));
363 static const char *if_exists_spec_function PARAMS ((int, const char **));
364 static const char *if_exists_else_spec_function PARAMS ((int, const char **));
366 /* The Specs Language
368 Specs are strings containing lines, each of which (if not blank)
369 is made up of a program name, and arguments separated by spaces.
370 The program name must be exact and start from root, since no path
371 is searched and it is unreliable to depend on the current working directory.
372 Redirection of input or output is not supported; the subprograms must
373 accept filenames saying what files to read and write.
375 In addition, the specs can contain %-sequences to substitute variable text
376 or for conditional text. Here is a table of all defined %-sequences.
377 Note that spaces are not generated automatically around the results of
378 expanding these sequences; therefore, you can concatenate them together
379 or with constant text in a single argument.
381 %% substitute one % into the program name or argument.
382 %i substitute the name of the input file being processed.
383 %b substitute the basename of the input file being processed.
384 This is the substring up to (and not including) the last period
385 and not including the directory.
386 %B same as %b, but include the file suffix (text after the last period).
388 substitute a file name that has suffix SUFFIX and is chosen
389 once per compilation, and mark the argument a la %d. To reduce
390 exposure to denial-of-service attacks, the file name is now
391 chosen in a way that is hard to predict even when previously
392 chosen file names are known. For example, `%g.s ... %g.o ... %g.s'
393 might turn into `ccUVUUAU.s ccXYAXZ12.o ccUVUUAU.s'. SUFFIX matches
394 the regexp "[.A-Za-z]*%O"; "%O" is treated exactly as if it
395 had been pre-processed. Previously, %g was simply substituted
396 with a file name chosen once per compilation, without regard
397 to any appended suffix (which was therefore treated just like
398 ordinary text), making such attacks more likely to succeed.
400 like %g, but if -pipe is in effect, expands simply to "-".
402 like %g, but if -pipe is in effect, expands to nothing. (We have both
403 %| and %m to accommodate differences between system assemblers; see
404 the AS_NEEDS_DASH_FOR_PIPED_INPUT target macro.)
406 like %g, but generates a new temporary file name even if %uSUFFIX
409 substitutes the last file name generated with %uSUFFIX, generating a
410 new one if there is no such last file name. In the absence of any
411 %uSUFFIX, this is just like %gSUFFIX, except they don't share
412 the same suffix "space", so `%g.s ... %U.s ... %g.s ... %U.s'
413 would involve the generation of two distinct file names, one
414 for each `%g.s' and another for each `%U.s'. Previously, %U was
415 simply substituted with a file name chosen for the previous %u,
416 without regard to any appended suffix.
418 substitutes the name of the HOST_BIT_BUCKET, if any, and if it is
419 writable, and if save-temps is off; otherwise, substitute the name
420 of a temporary file, just like %u. This temporary file is not
421 meant for communication between processes, but rather as a junk
424 substitutes .SUFFIX for the suffixes of a matched switch's args when
425 it is subsequently output with %*. SUFFIX is terminated by the next
427 %d marks the argument containing or following the %d as a
428 temporary file name, so that that file will be deleted if CC exits
429 successfully. Unlike %g, this contributes no text to the argument.
430 %w marks the argument containing or following the %w as the
431 "output file" of this compilation. This puts the argument
432 into the sequence of arguments that %o will substitute later.
433 %V indicates that this compilation produces no "output file".
435 like %{...} but mark last argument supplied within
436 as a file to be deleted on failure.
437 %o substitutes the names of all the output files, with spaces
438 automatically placed around them. You should write spaces
439 around the %o as well or the results are undefined.
440 %o is for use in the specs for running the linker.
441 Input files whose names have no recognized suffix are not compiled
442 at all, but they are included among the output files, so they will
444 %O substitutes the suffix for object files. Note that this is
445 handled specially when it immediately follows %g, %u, or %U
446 (with or without a suffix argument) because of the need for
447 those to form complete file names. The handling is such that
448 %O is treated exactly as if it had already been substituted,
449 except that %g, %u, and %U do not currently support additional
450 SUFFIX characters following %O as they would following, for
452 %I Substitute any of -iprefix (made from GCC_EXEC_PREFIX), -isysroot
453 (made from TARGET_SYSTEM_ROOT), and -isystem (made from COMPILER_PATH
454 and -B options) as necessary.
455 %s current argument is the name of a library or startup file of some sort.
456 Search for that file in a standard list of directories
457 and substitute the full name found.
458 %eSTR Print STR as an error message. STR is terminated by a newline.
459 Use this when inconsistent options are detected.
460 %nSTR Print STR as a notice. STR is terminated by a newline.
461 %x{OPTION} Accumulate an option for %X.
462 %X Output the accumulated linker options specified by compilations.
463 %Y Output the accumulated assembler options specified by compilations.
464 %Z Output the accumulated preprocessor options specified by compilations.
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 #ifndef LINK_PIE_SPEC
670 #define LINK_PIE_SPEC "%{pie:-pie} "
672 #define LINK_PIE_SPEC "%{pie:} "
676 /* -u* was put back because both BSD and SysV seem to support it. */
677 /* %{static:} simply prevents an error message if the target machine
678 doesn't handle -static. */
679 /* We want %{T*} after %{L*} and %D so that it can be used to specify linker
680 scripts which exist in user specified directories, or in standard
682 #ifndef LINK_COMMAND_SPEC
683 #define LINK_COMMAND_SPEC "\
684 %{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:\
685 %(linker) %l " LINK_PIE_SPEC "%X %{o*} %{A} %{d} %{e*} %{m} %{N} %{n} %{r}\
686 %{s} %{t} %{u*} %{x} %{z} %{Z} %{!A:%{!nostdlib:%{!nostartfiles:%S}}}\
687 %{static:} %{L*} %(link_libgcc) %o %{fprofile-arcs:-lgcov}\
688 %{!nostdlib:%{!nodefaultlibs:%(link_gcc_c_sequence)}}\
689 %{!A:%{!nostdlib:%{!nostartfiles:%E}}} %{T*} }}}}}}"
692 #ifndef LINK_LIBGCC_SPEC
693 # ifdef LINK_LIBGCC_SPECIAL
694 /* Don't generate -L options for startfile prefix list. */
695 # define LINK_LIBGCC_SPEC ""
697 /* Do generate them. */
698 # define LINK_LIBGCC_SPEC "%D"
702 #ifndef STARTFILE_PREFIX_SPEC
703 # define STARTFILE_PREFIX_SPEC ""
706 static const char *asm_debug;
707 static const char *cpp_spec = CPP_SPEC;
708 static const char *cc1_spec = CC1_SPEC;
709 static const char *cc1plus_spec = CC1PLUS_SPEC;
710 static const char *link_gcc_c_sequence_spec = LINK_GCC_C_SEQUENCE_SPEC;
711 static const char *asm_spec = ASM_SPEC;
712 static const char *asm_final_spec = ASM_FINAL_SPEC;
713 static const char *link_spec = LINK_SPEC;
714 static const char *lib_spec = LIB_SPEC;
715 static const char *libgcc_spec = LIBGCC_SPEC;
716 static const char *endfile_spec = ENDFILE_SPEC;
717 static const char *startfile_spec = STARTFILE_SPEC;
718 static const char *switches_need_spaces = SWITCHES_NEED_SPACES;
719 static const char *linker_name_spec = LINKER_NAME;
720 static const char *link_command_spec = LINK_COMMAND_SPEC;
721 static const char *link_libgcc_spec = LINK_LIBGCC_SPEC;
722 static const char *startfile_prefix_spec = STARTFILE_PREFIX_SPEC;
724 /* Standard options to cpp, cc1, and as, to reduce duplication in specs.
725 There should be no need to override these in target dependent files,
726 but we need to copy them to the specs file so that newer versions
727 of the GCC driver can correctly drive older tool chains with the
728 appropriate -B options. */
730 /* When cpplib handles traditional preprocessing, get rid of this, and
731 call cc1 (or cc1obj in objc/lang-specs.h) from the main specs so
732 that we default the front end language better. */
733 static const char *trad_capable_cpp =
734 "cc1 -E %{traditional|ftraditional|traditional-cpp:-traditional-cpp}";
736 /* We don't wrap .d files in %W{} since a missing .d file, and
737 therefore no dependency entry, confuses make into thinking a .o
738 file that happens to exist is up-to-date. */
739 static const char *cpp_unique_options =
740 "%{C|CC:%{!E:%eGCC does not support -C or -CC without -E}}\
741 %{!Q:-quiet} %{nostdinc*} %{C} %{CC} %{v} %{I*} %{P} %I\
742 %{MD:-MD %{!o:%b.d}%{o*:%.d%*}}\
743 %{MMD:-MMD %{!o:%b.d}%{o*:%.d%*}}\
744 %{M} %{MM} %{MF*} %{MG} %{MP} %{MQ*} %{MT*}\
745 %{!E:%{!M:%{!MM:%{MD|MMD:%{o*:-MQ %*}}}}}\
746 %{trigraphs} %{remap} %{g3:-dD} %{H} %C %{D*&U*&A*} %{i*} %Z %i\
749 /* This contains cpp options which are common with cc1_options and are passed
750 only when preprocessing only to avoid duplication. We pass the cc1 spec
751 options to the preprocessor so that it the cc1 spec may manipulate
752 options used to set target flags. Those special target flags settings may
753 in turn cause preprocessor symbols to be defined specially. */
754 static const char *cpp_options =
755 "%(cpp_unique_options) %1 %{m*} %{std*} %{ansi} %{W*&pedantic*} %{w} %{f*}\
758 /* This contains cpp options which are not passed when the preprocessor
759 output will be used by another program. */
760 static const char *cpp_debug_options = "%{d*}";
762 /* NB: This is shared amongst all front-ends. */
763 static const char *cc1_options =
764 "%{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\
765 %1 %{!Q:-quiet} -dumpbase %B %{d*} %{m*} %{a*}\
766 -auxbase%{c|S:%{o*:-strip %*}%{!o*: %b}}%{!c:%{!S: %b}}\
767 %{g*} %{O*} %{W*&pedantic*} %{w} %{std*} %{ansi}\
768 %{v:-version} %{pg:-p} %{p} %{f*} %{undef}\
769 %{Qn:-fno-ident} %{--help:--help}\
770 %{--target-help:--target-help}\
771 %{!fsyntax-only:%{S:%W{o*}%{!o*:-o %b.s}}}\
772 %{fsyntax-only:-o %j} %{-param*}";
774 static const char *asm_options =
775 "%a %Y %{c:%W{o*}%{!o*:-o %w%b%O}}%{!c:-o %d%w%u%O}";
777 static const char *invoke_as =
778 #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT
779 "%{!S:-o %|.s |\n as %(asm_options) %|.s %A }";
781 "%{!S:-o %|.s |\n as %(asm_options) %m.s %A }";
784 /* Some compilers have limits on line lengths, and the multilib_select
785 and/or multilib_matches strings can be very long, so we build them at
787 static struct obstack multilib_obstack;
788 static const char *multilib_select;
789 static const char *multilib_matches;
790 static const char *multilib_defaults;
791 static const char *multilib_exclusions;
792 #include "multilib.h"
794 /* Check whether a particular argument is a default argument. */
796 #ifndef MULTILIB_DEFAULTS
797 #define MULTILIB_DEFAULTS { "" }
800 static const char *const multilib_defaults_raw[] = MULTILIB_DEFAULTS;
802 #ifndef DRIVER_SELF_SPECS
803 #define DRIVER_SELF_SPECS ""
806 static const char *const driver_self_specs[] = { DRIVER_SELF_SPECS };
808 #ifndef OPTION_DEFAULT_SPECS
809 #define OPTION_DEFAULT_SPECS { "", "" }
818 static const struct default_spec
819 option_default_specs[] = { OPTION_DEFAULT_SPECS };
823 struct user_specs *next;
824 const char *filename;
827 static struct user_specs *user_specs_head, *user_specs_tail;
829 #ifndef SWITCH_TAKES_ARG
830 #define SWITCH_TAKES_ARG(CHAR) DEFAULT_SWITCH_TAKES_ARG(CHAR)
833 #ifndef WORD_SWITCH_TAKES_ARG
834 #define WORD_SWITCH_TAKES_ARG(STR) DEFAULT_WORD_SWITCH_TAKES_ARG (STR)
837 #ifdef HAVE_TARGET_EXECUTABLE_SUFFIX
838 /* This defines which switches stop a full compilation. */
839 #define DEFAULT_SWITCH_CURTAILS_COMPILATION(CHAR) \
840 ((CHAR) == 'c' || (CHAR) == 'S')
842 #ifndef SWITCH_CURTAILS_COMPILATION
843 #define SWITCH_CURTAILS_COMPILATION(CHAR) \
844 DEFAULT_SWITCH_CURTAILS_COMPILATION(CHAR)
848 /* Record the mapping from file suffixes for compilation specs. */
852 const char *suffix; /* Use this compiler for input files
853 whose names end in this suffix. */
855 const char *spec; /* To use this compiler, run this spec. */
857 const char *cpp_spec; /* If non-NULL, substitute this spec
858 for `%C', rather than the usual
862 /* Pointer to a vector of `struct compiler' that gives the spec for
863 compiling a file, based on its suffix.
864 A file that does not end in any of these suffixes will be passed
865 unchanged to the loader and nothing else will be done to it.
867 An entry containing two 0s is used to terminate the vector.
869 If multiple entries match a file, the last matching one is used. */
871 static struct compiler *compilers;
873 /* Number of entries in `compilers', not counting the null terminator. */
875 static int n_compilers;
877 /* The default list of file name suffixes and their compilation specs. */
879 static const struct compiler default_compilers[] =
881 /* Add lists of suffixes of known languages here. If those languages
882 were not present when we built the driver, we will hit these copies
883 and be given a more meaningful error than "file not used since
884 linking is not done". */
885 {".m", "#Objective-C", 0}, {".mi", "#Objective-C", 0},
886 {".cc", "#C++", 0}, {".cxx", "#C++", 0}, {".cpp", "#C++", 0},
887 {".cp", "#C++", 0}, {".c++", "#C++", 0}, {".C", "#C++", 0},
888 {".CPP", "#C++", 0}, {".ii", "#C++", 0},
889 {".ads", "#Ada", 0}, {".adb", "#Ada", 0},
890 {".f", "#Fortran", 0}, {".for", "#Fortran", 0}, {".fpp", "#Fortran", 0},
891 {".F", "#Fortran", 0}, {".FOR", "#Fortran", 0}, {".FPP", "#Fortran", 0},
892 {".r", "#Ratfor", 0},
893 {".p", "#Pascal", 0}, {".pas", "#Pascal", 0},
894 {".java", "#Java", 0}, {".class", "#Java", 0},
895 {".zip", "#Java", 0}, {".jar", "#Java", 0},
896 /* Next come the entries for C. */
899 /* cc1 has an integrated ISO C preprocessor. We should invoke the
900 external preprocessor if -save-temps is given. */
901 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\
903 %{traditional|ftraditional:\
904 %eGNU C no longer supports -traditional without -E}\
905 %{save-temps|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
906 %(cpp_options) -o %{save-temps:%b.i} %{!save-temps:%g.i} \n\
907 cc1 -fpreprocessed %{save-temps:%b.i} %{!save-temps:%g.i} \
909 %{!save-temps:%{!traditional-cpp:%{!no-integrated-cpp:\
910 cc1 %(cpp_unique_options) %(cc1_options)}}}\
911 %{!fsyntax-only:%(invoke_as)}}}}", 0},
913 "%{!E:%e-E required when input is from standard input}\
914 %(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)", 0},
915 {".h", "@c-header", 0},
917 /* cc1 has an integrated ISO C preprocessor. We should invoke the
918 external preprocessor if -save-temps is given. */
919 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\
921 %{save-temps|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
922 %(cpp_options) -o %{save-temps:%b.i} %{!save-temps:%g.i} \n\
923 cc1 -fpreprocessed %{save-temps:%b.i} %{!save-temps:%g.i} \
925 -o %g.s %{!o*:--output-pch=%i.gch}\
926 %W{o*:--output-pch=%*}%V}\
927 %{!save-temps:%{!traditional-cpp:%{!no-integrated-cpp:\
928 cc1 %(cpp_unique_options) %(cc1_options)\
929 -o %g.s %{!o*:--output-pch=%i.gch}\
930 %W{o*:--output-pch=%*}%V}}}}}}", 0},
931 {".i", "@cpp-output", 0},
933 "%{!M:%{!MM:%{!E:cc1 -fpreprocessed %i %(cc1_options) %{!fsyntax-only:%(invoke_as)}}}}", 0},
934 {".s", "@assembler", 0},
936 "%{!M:%{!MM:%{!E:%{!S:as %(asm_debug) %(asm_options) %i %A }}}}", 0},
937 {".S", "@assembler-with-cpp", 0},
938 {"@assembler-with-cpp",
939 #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT
940 "%(trad_capable_cpp) -lang-asm %(cpp_options)\
941 %{E|M|MM:%(cpp_debug_options)}\
942 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\
943 as %(asm_debug) %(asm_options) %|.s %A }}}}"
945 "%(trad_capable_cpp) -lang-asm %(cpp_options)\
946 %{E|M|MM:%(cpp_debug_options)}\
947 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\
948 as %(asm_debug) %(asm_options) %m.s %A }}}}"
953 /* Mark end of table */
957 /* Number of elements in default_compilers, not counting the terminator. */
959 static const int n_default_compilers = ARRAY_SIZE (default_compilers) - 1;
961 /* A vector of options to give to the linker.
962 These options are accumulated by %x,
963 and substituted into the linker command with %X. */
964 static int n_linker_options;
965 static char **linker_options;
967 /* A vector of options to give to the assembler.
968 These options are accumulated by -Wa,
969 and substituted into the assembler command with %Y. */
970 static int n_assembler_options;
971 static char **assembler_options;
973 /* A vector of options to give to the preprocessor.
974 These options are accumulated by -Wp,
975 and substituted into the preprocessor command with %Z. */
976 static int n_preprocessor_options;
977 static char **preprocessor_options;
979 /* Define how to map long options into short ones. */
981 /* This structure describes one mapping. */
984 /* The long option's name. */
985 const char *const name;
986 /* The equivalent short option. */
987 const char *const equivalent;
988 /* Argument info. A string of flag chars; NULL equals no options.
989 a => argument required.
990 o => argument optional.
991 j => join argument to equivalent, making one word.
992 * => require other text after NAME as an argument. */
993 const char *const arg_info;
996 /* This is the table of mappings. Mappings are tried sequentially
997 for each option encountered; the first one that matches, wins. */
999 static const struct option_map option_map[] =
1001 {"--all-warnings", "-Wall", 0},
1002 {"--ansi", "-ansi", 0},
1003 {"--assemble", "-S", 0},
1004 {"--assert", "-A", "a"},
1005 {"--classpath", "-fclasspath=", "aj"},
1006 {"--bootclasspath", "-fbootclasspath=", "aj"},
1007 {"--CLASSPATH", "-fclasspath=", "aj"},
1008 {"--comments", "-C", 0},
1009 {"--comments-in-macros", "-CC", 0},
1010 {"--compile", "-c", 0},
1011 {"--debug", "-g", "oj"},
1012 {"--define-macro", "-D", "aj"},
1013 {"--dependencies", "-M", 0},
1014 {"--dump", "-d", "a"},
1015 {"--dumpbase", "-dumpbase", "a"},
1016 {"--entry", "-e", 0},
1017 {"--extra-warnings", "-W", 0},
1018 {"--for-assembler", "-Wa", "a"},
1019 {"--for-linker", "-Xlinker", "a"},
1020 {"--force-link", "-u", "a"},
1021 {"--imacros", "-imacros", "a"},
1022 {"--include", "-include", "a"},
1023 {"--include-barrier", "-I-", 0},
1024 {"--include-directory", "-I", "aj"},
1025 {"--include-directory-after", "-idirafter", "a"},
1026 {"--include-prefix", "-iprefix", "a"},
1027 {"--include-with-prefix", "-iwithprefix", "a"},
1028 {"--include-with-prefix-before", "-iwithprefixbefore", "a"},
1029 {"--include-with-prefix-after", "-iwithprefix", "a"},
1030 {"--language", "-x", "a"},
1031 {"--library-directory", "-L", "a"},
1032 {"--machine", "-m", "aj"},
1033 {"--machine-", "-m", "*j"},
1034 {"--no-integrated-cpp", "-no-integrated-cpp", 0},
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 {"--pie", "-pie", 0},
1047 {"--pipe", "-pipe", 0},
1048 {"--prefix", "-B", "a"},
1049 {"--preprocess", "-E", 0},
1050 {"--print-search-dirs", "-print-search-dirs", 0},
1051 {"--print-file-name", "-print-file-name=", "aj"},
1052 {"--print-libgcc-file-name", "-print-libgcc-file-name", 0},
1053 {"--print-missing-file-dependencies", "-MG", 0},
1054 {"--print-multi-lib", "-print-multi-lib", 0},
1055 {"--print-multi-directory", "-print-multi-directory", 0},
1056 {"--print-multi-os-directory", "-print-multi-os-directory", 0},
1057 {"--print-prog-name", "-print-prog-name=", "aj"},
1058 {"--profile", "-p", 0},
1059 {"--profile-blocks", "-a", 0},
1060 {"--quiet", "-q", 0},
1061 {"--resource", "-fcompile-resource=", "aj"},
1062 {"--save-temps", "-save-temps", 0},
1063 {"--shared", "-shared", 0},
1064 {"--silent", "-q", 0},
1065 {"--specs", "-specs=", "aj"},
1066 {"--static", "-static", 0},
1067 {"--std", "-std=", "aj"},
1068 {"--symbolic", "-symbolic", 0},
1069 {"--target", "-b", "a"},
1070 {"--time", "-time", 0},
1071 {"--trace-includes", "-H", 0},
1072 {"--traditional", "-traditional", 0},
1073 {"--traditional-cpp", "-traditional-cpp", 0},
1074 {"--trigraphs", "-trigraphs", 0},
1075 {"--undefine-macro", "-U", "aj"},
1076 {"--use-version", "-V", "a"},
1077 {"--user-dependencies", "-MM", 0},
1078 {"--verbose", "-v", 0},
1079 {"--warn-", "-W", "*j"},
1080 {"--write-dependencies", "-MD", 0},
1081 {"--write-user-dependencies", "-MMD", 0},
1086 #ifdef TARGET_OPTION_TRANSLATE_TABLE
1087 static const struct {
1088 const char *const option_found;
1089 const char *const replacements;
1090 } target_option_translations[] =
1092 TARGET_OPTION_TRANSLATE_TABLE,
1097 /* Translate the options described by *ARGCP and *ARGVP.
1098 Make a new vector and store it back in *ARGVP,
1099 and store its length in *ARGVC. */
1102 translate_options (argcp, argvp)
1104 const char *const **argvp;
1108 const char *const *argv = *argvp;
1109 int newvsize = (argc + 2) * 2 * sizeof (const char *);
1111 (const char **) xmalloc (newvsize);
1115 newv[newindex++] = argv[i++];
1119 #ifdef TARGET_OPTION_TRANSLATE_TABLE
1123 target_option_translations[tott_idx].option_found;
1126 if (strcmp (target_option_translations[tott_idx].option_found,
1133 for (sp = target_option_translations[tott_idx].replacements;
1140 newvsize += spaces * sizeof (const char *);
1141 newv = (const char **) xrealloc (newv, newvsize);
1143 sp = target_option_translations[tott_idx].replacements;
1152 newv[newindex++] = np;
1153 while (*np != ' ' && *np)
1164 if (target_option_translations[tott_idx].option_found)
1168 /* Translate -- options. */
1169 if (argv[i][0] == '-' && argv[i][1] == '-')
1172 /* Find a mapping that applies to this option. */
1173 for (j = 0; j < ARRAY_SIZE (option_map); j++)
1175 size_t optlen = strlen (option_map[j].name);
1176 size_t arglen = strlen (argv[i]);
1177 size_t complen = arglen > optlen ? optlen : arglen;
1178 const char *arginfo = option_map[j].arg_info;
1183 if (!strncmp (argv[i], option_map[j].name, complen))
1185 const char *arg = 0;
1187 if (arglen < optlen)
1190 for (k = j + 1; k < ARRAY_SIZE (option_map); k++)
1191 if (strlen (option_map[k].name) >= arglen
1192 && !strncmp (argv[i], option_map[k].name, arglen))
1194 error ("ambiguous abbreviation %s", argv[i]);
1198 if (k != ARRAY_SIZE (option_map))
1202 if (arglen > optlen)
1204 /* If the option has an argument, accept that. */
1205 if (argv[i][optlen] == '=')
1206 arg = argv[i] + optlen + 1;
1208 /* If this mapping requires extra text at end of name,
1209 accept that as "argument". */
1210 else if (strchr (arginfo, '*') != 0)
1211 arg = argv[i] + optlen;
1213 /* Otherwise, extra text at end means mismatch.
1214 Try other mappings. */
1219 else if (strchr (arginfo, '*') != 0)
1221 error ("incomplete `%s' option", option_map[j].name);
1225 /* Handle arguments. */
1226 if (strchr (arginfo, 'a') != 0)
1232 error ("missing argument to `%s' option",
1233 option_map[j].name);
1240 else if (strchr (arginfo, '*') != 0)
1242 else if (strchr (arginfo, 'o') == 0)
1245 error ("extraneous argument to `%s' option",
1246 option_map[j].name);
1250 /* Store the translation as one argv elt or as two. */
1251 if (arg != 0 && strchr (arginfo, 'j') != 0)
1252 newv[newindex++] = concat (option_map[j].equivalent, arg,
1256 newv[newindex++] = option_map[j].equivalent;
1257 newv[newindex++] = arg;
1260 newv[newindex++] = option_map[j].equivalent;
1268 /* Handle old-fashioned options--just copy them through,
1269 with their arguments. */
1270 else if (argv[i][0] == '-')
1272 const char *p = argv[i] + 1;
1276 if (SWITCH_TAKES_ARG (c) > (p[1] != 0))
1277 nskip += SWITCH_TAKES_ARG (c) - (p[1] != 0);
1278 else if (WORD_SWITCH_TAKES_ARG (p))
1279 nskip += WORD_SWITCH_TAKES_ARG (p);
1280 else if ((c == 'B' || c == 'b' || c == 'x')
1283 else if (! strcmp (p, "Xlinker"))
1285 else if (! strcmp (p, "Xpreprocessor"))
1287 else if (! strcmp (p, "Xassembler"))
1290 /* Watch out for an option at the end of the command line that
1291 is missing arguments, and avoid skipping past the end of the
1293 if (nskip + i > argc)
1298 newv[newindex++] = argv[i++];
1303 /* Ordinary operands, or +e options. */
1304 newv[newindex++] = argv[i++];
1319 /* A fully-blank line is a delimiter in the SPEC file and shouldn't
1320 be considered whitespace. */
1321 if (p[0] == '\n' && p[1] == '\n' && p[2] == '\n')
1323 else if (*p == '\n' || *p == ' ' || *p == '\t')
1337 /* Structures to keep track of prefixes to try when looking for files. */
1341 const char *prefix; /* String to prepend to the path. */
1342 struct prefix_list *next; /* Next in linked list. */
1343 int require_machine_suffix; /* Don't use without machine_suffix. */
1344 /* 2 means try both machine_suffix and just_machine_suffix. */
1345 int *used_flag_ptr; /* 1 if a file was found with this prefix. */
1346 int priority; /* Sort key - priority within list. */
1347 int os_multilib; /* 1 if OS multilib scheme should be used,
1348 0 for GCC multilib scheme. */
1353 struct prefix_list *plist; /* List of prefixes to try */
1354 int max_len; /* Max length of a prefix in PLIST */
1355 const char *name; /* Name of this list (used in config stuff) */
1358 /* List of prefixes to try when looking for executables. */
1360 static struct path_prefix exec_prefixes = { 0, 0, "exec" };
1362 /* List of prefixes to try when looking for startup (crt0) files. */
1364 static struct path_prefix startfile_prefixes = { 0, 0, "startfile" };
1366 /* List of prefixes to try when looking for include files. */
1368 static struct path_prefix include_prefixes = { 0, 0, "include" };
1370 /* Suffix to attach to directories searched for commands.
1371 This looks like `MACHINE/VERSION/'. */
1373 static const char *machine_suffix = 0;
1375 /* Suffix to attach to directories searched for commands.
1376 This is just `MACHINE/'. */
1378 static const char *just_machine_suffix = 0;
1380 /* Adjusted value of GCC_EXEC_PREFIX envvar. */
1382 static const char *gcc_exec_prefix;
1384 /* Default prefixes to attach to command names. */
1386 #ifdef CROSS_COMPILE /* Don't use these prefixes for a cross compiler. */
1387 #undef MD_EXEC_PREFIX
1388 #undef MD_STARTFILE_PREFIX
1389 #undef MD_STARTFILE_PREFIX_1
1392 /* If no prefixes defined, use the null string, which will disable them. */
1393 #ifndef MD_EXEC_PREFIX
1394 #define MD_EXEC_PREFIX ""
1396 #ifndef MD_STARTFILE_PREFIX
1397 #define MD_STARTFILE_PREFIX ""
1399 #ifndef MD_STARTFILE_PREFIX_1
1400 #define MD_STARTFILE_PREFIX_1 ""
1403 /* Supply defaults for the standard prefixes. */
1405 #ifndef STANDARD_EXEC_PREFIX
1406 #define STANDARD_EXEC_PREFIX "/usr/local/lib/gcc-lib/"
1408 #ifndef STANDARD_STARTFILE_PREFIX
1409 #define STANDARD_STARTFILE_PREFIX "/usr/local/lib/"
1411 #ifndef TOOLDIR_BASE_PREFIX
1412 #define TOOLDIR_BASE_PREFIX "/usr/local/"
1414 #ifndef STANDARD_BINDIR_PREFIX
1415 #define STANDARD_BINDIR_PREFIX "/usr/local/bin"
1418 static const char *const standard_exec_prefix = STANDARD_EXEC_PREFIX;
1419 static const char *const standard_exec_prefix_1 = "/usr/lib/gcc/";
1420 static const char *md_exec_prefix = MD_EXEC_PREFIX;
1422 static const char *md_startfile_prefix = MD_STARTFILE_PREFIX;
1423 static const char *md_startfile_prefix_1 = MD_STARTFILE_PREFIX_1;
1424 static const char *const standard_startfile_prefix = STANDARD_STARTFILE_PREFIX;
1425 static const char *const standard_startfile_prefix_1 = "/lib/";
1426 static const char *const standard_startfile_prefix_2 = "/usr/lib/";
1428 static const char *const tooldir_base_prefix = TOOLDIR_BASE_PREFIX;
1429 static const char *tooldir_prefix;
1431 static const char *const standard_bindir_prefix = STANDARD_BINDIR_PREFIX;
1433 /* Subdirectory to use for locating libraries. Set by
1434 set_multilib_dir based on the compilation options. */
1436 static const char *multilib_dir;
1438 /* Subdirectory to use for locating libraries in OS conventions. Set by
1439 set_multilib_dir based on the compilation options. */
1441 static const char *multilib_os_dir;
1443 /* Structure to keep track of the specs that have been defined so far.
1444 These are accessed using %(specname) or %[specname] in a compiler
1449 /* The following 2 fields must be first */
1450 /* to allow EXTRA_SPECS to be initialized */
1451 const char *name; /* name of the spec. */
1452 const char *ptr; /* available ptr if no static pointer */
1454 /* The following fields are not initialized */
1455 /* by EXTRA_SPECS */
1456 const char **ptr_spec; /* pointer to the spec itself. */
1457 struct spec_list *next; /* Next spec in linked list. */
1458 int name_len; /* length of the name */
1459 int alloc_p; /* whether string was allocated */
1462 #define INIT_STATIC_SPEC(NAME,PTR) \
1463 { NAME, NULL, PTR, (struct spec_list *) 0, sizeof (NAME) - 1, 0 }
1465 /* List of statically defined specs. */
1466 static struct spec_list static_specs[] =
1468 INIT_STATIC_SPEC ("asm", &asm_spec),
1469 INIT_STATIC_SPEC ("asm_debug", &asm_debug),
1470 INIT_STATIC_SPEC ("asm_final", &asm_final_spec),
1471 INIT_STATIC_SPEC ("asm_options", &asm_options),
1472 INIT_STATIC_SPEC ("invoke_as", &invoke_as),
1473 INIT_STATIC_SPEC ("cpp", &cpp_spec),
1474 INIT_STATIC_SPEC ("cpp_options", &cpp_options),
1475 INIT_STATIC_SPEC ("cpp_debug_options", &cpp_debug_options),
1476 INIT_STATIC_SPEC ("cpp_unique_options", &cpp_unique_options),
1477 INIT_STATIC_SPEC ("trad_capable_cpp", &trad_capable_cpp),
1478 INIT_STATIC_SPEC ("cc1", &cc1_spec),
1479 INIT_STATIC_SPEC ("cc1_options", &cc1_options),
1480 INIT_STATIC_SPEC ("cc1plus", &cc1plus_spec),
1481 INIT_STATIC_SPEC ("link_gcc_c_sequence", &link_gcc_c_sequence_spec),
1482 INIT_STATIC_SPEC ("endfile", &endfile_spec),
1483 INIT_STATIC_SPEC ("link", &link_spec),
1484 INIT_STATIC_SPEC ("lib", &lib_spec),
1485 INIT_STATIC_SPEC ("libgcc", &libgcc_spec),
1486 INIT_STATIC_SPEC ("startfile", &startfile_spec),
1487 INIT_STATIC_SPEC ("switches_need_spaces", &switches_need_spaces),
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 ((void *) 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 ((void *) *(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 ((void *) 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 Permissible 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) 2003 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 defined(TARGET_SYSTEM_ROOT_RELOCATABLE) && !defined(VMS)
3834 /* If the normal TARGET_SYSTEM_ROOT is inside of $exec_prefix,
3835 then consider it to relocate with the rest of the GCC installation
3836 if GCC_EXEC_PREFIX is set.
3837 ``make_relative_prefix'' is not compiled for VMS, so don't call it. */
3838 if (target_system_root && gcc_exec_prefix)
3840 char *tmp_prefix = make_relative_prefix (argv[0],
3841 standard_bindir_prefix,
3842 target_system_root);
3843 if (tmp_prefix && access_check (tmp_prefix, F_OK) == 0)
3845 target_system_root = tmp_prefix;
3846 target_system_root_changed = 1;
3851 /* More prefixes are enabled in main, after we read the specs file
3852 and determine whether this is cross-compilation or not. */
3854 /* Then create the space for the vectors and scan again. */
3856 switches = ((struct switchstr *)
3857 xmalloc ((n_switches + 1) * sizeof (struct switchstr)));
3858 infiles = (struct infile *) xmalloc ((n_infiles + 1) * sizeof (struct infile));
3861 last_language_n_infiles = -1;
3863 /* This, time, copy the text of each switch and store a pointer
3864 to the copy in the vector of switches.
3865 Store all the infiles in their vector. */
3867 for (i = 1; i < argc; i++)
3869 /* Just skip the switches that were handled by the preceding loop. */
3870 #ifdef MODIFY_TARGET_NAME
3871 is_modify_target_name = 0;
3873 for (j = 0; j < ARRAY_SIZE (modify_target); j++)
3874 if (! strcmp (argv[i], modify_target[j].sw))
3875 is_modify_target_name = 1;
3877 if (is_modify_target_name)
3881 if (! strncmp (argv[i], "-Wa,", 4))
3883 else if (! strncmp (argv[i], "-Wp,", 4))
3885 else if (! strcmp (argv[i], "-pass-exit-codes"))
3887 else if (! strcmp (argv[i], "-print-search-dirs"))
3889 else if (! strcmp (argv[i], "-print-libgcc-file-name"))
3891 else if (! strncmp (argv[i], "-print-file-name=", 17))
3893 else if (! strncmp (argv[i], "-print-prog-name=", 17))
3895 else if (! strcmp (argv[i], "-print-multi-lib"))
3897 else if (! strcmp (argv[i], "-print-multi-directory"))
3899 else if (! strcmp (argv[i], "-print-multi-os-directory"))
3901 else if (! strcmp (argv[i], "-ftarget-help"))
3903 else if (! strcmp (argv[i], "-fhelp"))
3905 else if (argv[i][0] == '+' && argv[i][1] == 'e')
3907 /* Compensate for the +e options to the C++ front-end;
3908 they're there simply for cfront call-compatibility. We do
3909 some magic in default_compilers to pass them down properly.
3910 Note we deliberately start at the `+' here, to avoid passing
3911 -e0 or -e1 down into the linker. */
3912 switches[n_switches].part1 = &argv[i][0];
3913 switches[n_switches].args = 0;
3914 switches[n_switches].live_cond = SWITCH_OK;
3915 switches[n_switches].validated = 0;
3918 else if (strncmp (argv[i], "-Wl,", 4) == 0)
3921 /* Split the argument at commas. */
3923 for (j = 4; argv[i][j]; j++)
3924 if (argv[i][j] == ',')
3926 infiles[n_infiles].language = "*";
3927 infiles[n_infiles++].name
3928 = save_string (argv[i] + prev, j - prev);
3931 /* Record the part after the last comma. */
3932 infiles[n_infiles].language = "*";
3933 infiles[n_infiles++].name = argv[i] + prev;
3935 else if (strcmp (argv[i], "-Xlinker") == 0)
3937 infiles[n_infiles].language = "*";
3938 infiles[n_infiles++].name = argv[++i];
3940 else if (strcmp (argv[i], "-Xassembler") == 0)
3942 infiles[n_infiles].language = "*";
3943 infiles[n_infiles++].name = argv[++i];
3945 else if (strcmp (argv[i], "-Xpreprocessor") == 0)
3947 infiles[n_infiles].language = "*";
3948 infiles[n_infiles++].name = argv[++i];
3950 else if (strcmp (argv[i], "-l") == 0)
3951 { /* POSIX allows separation of -l and the lib arg;
3952 canonicalize by concatenating -l with its arg */
3953 infiles[n_infiles].language = "*";
3954 infiles[n_infiles++].name = concat ("-l", argv[++i], NULL);
3956 else if (strncmp (argv[i], "-l", 2) == 0)
3958 infiles[n_infiles].language = "*";
3959 infiles[n_infiles++].name = argv[i];
3961 else if (strcmp (argv[i], "-specs") == 0)
3963 else if (strncmp (argv[i], "-specs=", 7) == 0)
3965 else if (strcmp (argv[i], "-time") == 0)
3967 else if (strcmp (argv[i], "-###") == 0)
3969 else if (argv[i][0] == '-' && argv[i][1] != 0)
3971 const char *p = &argv[i][1];
3976 if (p[1] == 0 && i + 1 == argc)
3977 fatal ("argument to `-x' is missing");
3979 spec_lang = argv[++i];
3982 if (! strcmp (spec_lang, "none"))
3983 /* Suppress the warning if -xnone comes after the last input
3984 file, because alternate command interfaces like g++ might
3985 find it useful to place -xnone after each input file. */
3988 last_language_n_infiles = n_infiles;
3991 switches[n_switches].part1 = p;
3992 /* Deal with option arguments in separate argv elements. */
3993 if ((SWITCH_TAKES_ARG (c) > (p[1] != 0))
3994 || WORD_SWITCH_TAKES_ARG (p))
3997 int n_args = WORD_SWITCH_TAKES_ARG (p);
4001 /* Count only the option arguments in separate argv elements. */
4002 n_args = SWITCH_TAKES_ARG (c) - (p[1] != 0);
4004 if (i + n_args >= argc)
4005 fatal ("argument to `-%s' is missing", p);
4006 switches[n_switches].args
4007 = (const char **) xmalloc ((n_args + 1) * sizeof(const char *));
4009 switches[n_switches].args[j++] = argv[++i];
4010 /* Null-terminate the vector. */
4011 switches[n_switches].args[j] = 0;
4013 else if (strchr (switches_need_spaces, c))
4015 /* On some systems, ld cannot handle some options without
4016 a space. So split the option from its argument. */
4017 char *part1 = (char *) xmalloc (2);
4021 switches[n_switches].part1 = part1;
4022 switches[n_switches].args
4023 = (const char **) xmalloc (2 * sizeof (const char *));
4024 switches[n_switches].args[0] = xstrdup (p+1);
4025 switches[n_switches].args[1] = 0;
4028 switches[n_switches].args = 0;
4030 switches[n_switches].live_cond = SWITCH_OK;
4031 switches[n_switches].validated = 0;
4032 switches[n_switches].ordering = 0;
4033 /* These are always valid, since gcc.c itself understands them. */
4034 if (!strcmp (p, "save-temps")
4035 || !strcmp (p, "static-libgcc")
4036 || !strcmp (p, "shared-libgcc")
4037 || !strcmp (p, "pipe"))
4038 switches[n_switches].validated = 1;
4041 char ch = switches[n_switches].part1[0];
4043 switches[n_switches].validated = 1;
4049 #ifdef HAVE_TARGET_OBJECT_SUFFIX
4050 argv[i] = convert_filename (argv[i], 0, access (argv[i], F_OK));
4053 if (strcmp (argv[i], "-") != 0 && access (argv[i], F_OK) < 0)
4055 perror_with_name (argv[i]);
4060 infiles[n_infiles].language = spec_lang;
4061 infiles[n_infiles++].name = argv[i];
4066 if (n_infiles == last_language_n_infiles && spec_lang != 0)
4067 error ("warning: `-x %s' after last input file has no effect", spec_lang);
4069 /* Ensure we only invoke each subprocess once. */
4070 if (target_help_flag || print_help_list)
4074 /* Create a dummy input file, so that we can pass --target-help on to
4075 the various sub-processes. */
4076 infiles[0].language = "c";
4077 infiles[0].name = "help-dummy";
4079 if (target_help_flag)
4081 switches[n_switches].part1 = "--target-help";
4082 switches[n_switches].args = 0;
4083 switches[n_switches].live_cond = SWITCH_OK;
4084 switches[n_switches].validated = 0;
4089 if (print_help_list)
4091 switches[n_switches].part1 = "--help";
4092 switches[n_switches].args = 0;
4093 switches[n_switches].live_cond = SWITCH_OK;
4094 switches[n_switches].validated = 0;
4100 switches[n_switches].part1 = 0;
4101 infiles[n_infiles].name = 0;
4104 /* Store switches not filtered out by %<S in spec in COLLECT_GCC_OPTIONS
4105 and place that in the environment. */
4108 set_collect_gcc_options ()
4113 /* Build COLLECT_GCC_OPTIONS to have all of the options specified to
4115 obstack_grow (&collect_obstack, "COLLECT_GCC_OPTIONS=",
4116 sizeof ("COLLECT_GCC_OPTIONS=") - 1);
4119 for (i = 0; (int) i < n_switches; i++)
4121 const char *const *args;
4124 obstack_grow (&collect_obstack, " ", 1);
4128 /* Ignore elided switches. */
4129 if (switches[i].live_cond == SWITCH_IGNORE)
4132 obstack_grow (&collect_obstack, "'-", 2);
4133 q = switches[i].part1;
4134 while ((p = strchr (q, '\'')))
4136 obstack_grow (&collect_obstack, q, p - q);
4137 obstack_grow (&collect_obstack, "'\\''", 4);
4140 obstack_grow (&collect_obstack, q, strlen (q));
4141 obstack_grow (&collect_obstack, "'", 1);
4143 for (args = switches[i].args; args && *args; args++)
4145 obstack_grow (&collect_obstack, " '", 2);
4147 while ((p = strchr (q, '\'')))
4149 obstack_grow (&collect_obstack, q, p - q);
4150 obstack_grow (&collect_obstack, "'\\''", 4);
4153 obstack_grow (&collect_obstack, q, strlen (q));
4154 obstack_grow (&collect_obstack, "'", 1);
4157 obstack_grow (&collect_obstack, "\0", 1);
4158 putenv (obstack_finish (&collect_obstack));
4161 /* Process a spec string, accumulating and running commands. */
4163 /* These variables describe the input file name.
4164 input_file_number is the index on outfiles of this file,
4165 so that the output file name can be stored for later use by %o.
4166 input_basename is the start of the part of the input file
4167 sans all directory names, and basename_length is the number
4168 of characters starting there excluding the suffix .c or whatever. */
4170 static const char *input_filename;
4171 static int input_file_number;
4172 size_t input_filename_length;
4173 static int basename_length;
4174 static int suffixed_basename_length;
4175 static const char *input_basename;
4176 static const char *input_suffix;
4177 static struct stat input_stat;
4178 static int input_stat_set;
4180 /* The compiler used to process the current input file. */
4181 static struct compiler *input_file_compiler;
4183 /* These are variables used within do_spec and do_spec_1. */
4185 /* Nonzero if an arg has been started and not yet terminated
4186 (with space, tab or newline). */
4187 static int arg_going;
4189 /* Nonzero means %d or %g has been seen; the next arg to be terminated
4190 is a temporary file name. */
4191 static int delete_this_arg;
4193 /* Nonzero means %w has been seen; the next arg to be terminated
4194 is the output file name of this compilation. */
4195 static int this_is_output_file;
4197 /* Nonzero means %s has been seen; the next arg to be terminated
4198 is the name of a library file and we should try the standard
4199 search dirs for it. */
4200 static int this_is_library_file;
4202 /* Nonzero means that the input of this command is coming from a pipe. */
4203 static int input_from_pipe;
4205 /* Nonnull means substitute this for any suffix when outputting a switches
4207 static const char *suffix_subst;
4209 /* Process the spec SPEC and run the commands specified therein.
4210 Returns 0 if the spec is successfully processed; -1 if failed. */
4218 value = do_spec_2 (spec);
4220 /* Force out any unfinished command.
4221 If -pipe, this forces out the last command if it ended in `|'. */
4224 if (argbuf_index > 0 && !strcmp (argbuf[argbuf_index - 1], "|"))
4227 set_collect_gcc_options ();
4229 if (argbuf_index > 0)
4245 delete_this_arg = 0;
4246 this_is_output_file = 0;
4247 this_is_library_file = 0;
4248 input_from_pipe = 0;
4249 suffix_subst = NULL;
4251 result = do_spec_1 (spec, 0, NULL);
4253 /* End any pending argument. */
4256 obstack_1grow (&obstack, 0);
4257 string = obstack_finish (&obstack);
4258 if (this_is_library_file)
4259 string = find_file (string);
4260 store_arg (string, delete_this_arg, this_is_output_file);
4261 if (this_is_output_file)
4262 outfiles[input_file_number] = string;
4270 /* Process the given spec string and add any new options to the end
4271 of the switches/n_switches array. */
4274 do_option_spec (name, spec)
4278 unsigned int i, value_count, value_len;
4279 const char *p, *q, *value;
4280 char *tmp_spec, *tmp_spec_p;
4282 if (configure_default_options[0].name == NULL)
4285 for (i = 0; i < ARRAY_SIZE (configure_default_options); i++)
4286 if (strcmp (configure_default_options[i].name, name) == 0)
4288 if (i == ARRAY_SIZE (configure_default_options))
4291 value = configure_default_options[i].value;
4292 value_len = strlen (value);
4294 /* Compute the size of the final spec. */
4297 while ((p = strstr (p, "%(VALUE)")) != NULL)
4303 /* Replace each %(VALUE) by the specified value. */
4304 tmp_spec = alloca (strlen (spec) + 1
4305 + value_count * (value_len - strlen ("%(VALUE)")));
4306 tmp_spec_p = tmp_spec;
4308 while ((p = strstr (q, "%(VALUE)")) != NULL)
4310 memcpy (tmp_spec_p, q, p - q);
4311 tmp_spec_p = tmp_spec_p + (p - q);
4312 memcpy (tmp_spec_p, value, value_len);
4313 tmp_spec_p += value_len;
4314 q = p + strlen ("%(VALUE)");
4316 strcpy (tmp_spec_p, q);
4318 do_self_spec (tmp_spec);
4321 /* Process the given spec string and add any new options to the end
4322 of the switches/n_switches array. */
4329 do_spec_1 (" ", 0, NULL);
4331 if (argbuf_index > 0)
4336 n_switches += argbuf_index;
4337 switches = xrealloc (switches,
4338 sizeof (struct switchstr) * (n_switches + 1));
4340 switches[n_switches] = switches[first];
4341 for (i = 0; i < argbuf_index; i++)
4343 struct switchstr *sw;
4345 /* Each switch should start with '-'. */
4346 if (argbuf[i][0] != '-')
4349 sw = &switches[i + first];
4350 sw->part1 = &argbuf[i][1];
4352 sw->live_cond = SWITCH_OK;
4359 /* Process the sub-spec SPEC as a portion of a larger spec.
4360 This is like processing a whole spec except that we do
4361 not initialize at the beginning and we do not supply a
4362 newline by default at the end.
4363 INSWITCH nonzero means don't process %-sequences in SPEC;
4364 in this case, % is treated as an ordinary character.
4365 This is used while substituting switches.
4366 INSWITCH nonzero also causes SPC not to terminate an argument.
4368 Value is zero unless a line was finished
4369 and the command on that line reported an error. */
4372 do_spec_1 (spec, inswitch, soft_matched_part)
4375 const char *soft_matched_part;
4377 const char *p = spec;
4384 /* If substituting a switch, treat all chars like letters.
4385 Otherwise, NL, SPC, TAB and % are special. */
4386 switch (inswitch ? 'a' : c)
4389 /* End of line: finish any pending argument,
4390 then run the pending command if one has been started. */
4393 obstack_1grow (&obstack, 0);
4394 string = obstack_finish (&obstack);
4395 if (this_is_library_file)
4396 string = find_file (string);
4397 store_arg (string, delete_this_arg, this_is_output_file);
4398 if (this_is_output_file)
4399 outfiles[input_file_number] = string;
4403 if (argbuf_index > 0 && !strcmp (argbuf[argbuf_index - 1], "|"))
4405 /* A `|' before the newline means use a pipe here,
4406 but only if -pipe was specified.
4407 Otherwise, execute now and don't pass the `|' as an arg. */
4410 input_from_pipe = 1;
4417 set_collect_gcc_options ();
4419 if (argbuf_index > 0)
4425 /* Reinitialize for a new command, and for a new argument. */
4428 delete_this_arg = 0;
4429 this_is_output_file = 0;
4430 this_is_library_file = 0;
4431 input_from_pipe = 0;
4435 /* End any pending argument. */
4438 obstack_1grow (&obstack, 0);
4439 string = obstack_finish (&obstack);
4440 if (this_is_library_file)
4441 string = find_file (string);
4442 store_arg (string, delete_this_arg, this_is_output_file);
4443 if (this_is_output_file)
4444 outfiles[input_file_number] = string;
4448 obstack_1grow (&obstack, c);
4454 /* Space or tab ends an argument if one is pending. */
4457 obstack_1grow (&obstack, 0);
4458 string = obstack_finish (&obstack);
4459 if (this_is_library_file)
4460 string = find_file (string);
4461 store_arg (string, delete_this_arg, this_is_output_file);
4462 if (this_is_output_file)
4463 outfiles[input_file_number] = string;
4465 /* Reinitialize for a new argument. */
4467 delete_this_arg = 0;
4468 this_is_output_file = 0;
4469 this_is_library_file = 0;
4476 fatal ("invalid specification! Bug in cc");
4479 obstack_grow (&obstack, input_basename, basename_length);
4484 obstack_grow (&obstack, input_basename, suffixed_basename_length);
4489 delete_this_arg = 2;
4492 /* Dump out the directories specified with LIBRARY_PATH,
4493 followed by the absolute directories
4494 that we search for startfiles. */
4497 struct prefix_list *pl = startfile_prefixes.plist;
4498 size_t bufsize = 100;
4499 char *buffer = (char *) xmalloc (bufsize);
4502 for (; pl; pl = pl->next)
4504 #ifdef RELATIVE_PREFIX_NOT_LINKDIR
4505 /* Used on systems which record the specified -L dirs
4506 and use them to search for dynamic linking. */
4507 /* Relative directories always come from -B,
4508 and it is better not to use them for searching
4509 at run time. In particular, stage1 loses. */
4510 if (!IS_ABSOLUTE_PATHNAME (pl->prefix))
4513 /* Try subdirectory if there is one. */
4514 if (multilib_dir != NULL
4515 || (pl->os_multilib && multilib_os_dir != NULL))
4517 const char *multi_dir;
4519 multi_dir = pl->os_multilib ? multilib_os_dir
4521 if (machine_suffix && multilib_dir)
4523 if (strlen (pl->prefix) + strlen (machine_suffix)
4525 bufsize = (strlen (pl->prefix)
4526 + strlen (machine_suffix)) * 2 + 1;
4527 buffer = (char *) xrealloc (buffer, bufsize);
4528 strcpy (buffer, pl->prefix);
4529 strcat (buffer, machine_suffix);
4530 if (is_directory (buffer, multilib_dir, 1))
4532 do_spec_1 ("-L", 0, NULL);
4533 #ifdef SPACE_AFTER_L_OPTION
4534 do_spec_1 (" ", 0, NULL);
4536 do_spec_1 (buffer, 1, NULL);
4537 do_spec_1 (multilib_dir, 1, NULL);
4538 /* Make this a separate argument. */
4539 do_spec_1 (" ", 0, NULL);
4542 if (!pl->require_machine_suffix)
4544 if (is_directory (pl->prefix, multi_dir, 1))
4546 do_spec_1 ("-L", 0, NULL);
4547 #ifdef SPACE_AFTER_L_OPTION
4548 do_spec_1 (" ", 0, NULL);
4550 do_spec_1 (pl->prefix, 1, NULL);
4551 do_spec_1 (multi_dir, 1, NULL);
4552 /* Make this a separate argument. */
4553 do_spec_1 (" ", 0, NULL);
4559 if (is_directory (pl->prefix, machine_suffix, 1))
4561 do_spec_1 ("-L", 0, NULL);
4562 #ifdef SPACE_AFTER_L_OPTION
4563 do_spec_1 (" ", 0, NULL);
4565 do_spec_1 (pl->prefix, 1, NULL);
4566 /* Remove slash from machine_suffix. */
4567 if (strlen (machine_suffix) >= bufsize)
4568 bufsize = strlen (machine_suffix) * 2 + 1;
4569 buffer = (char *) xrealloc (buffer, bufsize);
4570 strcpy (buffer, machine_suffix);
4571 idx = strlen (buffer);
4572 if (IS_DIR_SEPARATOR (buffer[idx - 1]))
4573 buffer[idx - 1] = 0;
4574 do_spec_1 (buffer, 1, NULL);
4575 /* Make this a separate argument. */
4576 do_spec_1 (" ", 0, NULL);
4579 if (!pl->require_machine_suffix)
4581 if (is_directory (pl->prefix, "", 1))
4583 do_spec_1 ("-L", 0, NULL);
4584 #ifdef SPACE_AFTER_L_OPTION
4585 do_spec_1 (" ", 0, NULL);
4587 /* Remove slash from pl->prefix. */
4588 if (strlen (pl->prefix) >= bufsize)
4589 bufsize = strlen (pl->prefix) * 2 + 1;
4590 buffer = (char *) xrealloc (buffer, bufsize);
4591 strcpy (buffer, pl->prefix);
4592 idx = strlen (buffer);
4593 if (IS_DIR_SEPARATOR (buffer[idx - 1]))
4594 buffer[idx - 1] = 0;
4595 do_spec_1 (buffer, 1, NULL);
4596 /* Make this a separate argument. */
4597 do_spec_1 (" ", 0, NULL);
4606 /* %efoo means report an error with `foo' as error message
4607 and don't execute any more commands for this file. */
4611 while (*p != 0 && *p != '\n')
4613 buf = (char *) alloca (p - q + 1);
4614 strncpy (buf, q, p - q);
4621 /* %nfoo means report a notice with `foo' on stderr. */
4625 while (*p != 0 && *p != '\n')
4627 buf = (char *) alloca (p - q + 1);
4628 strncpy (buf, q, p - q);
4630 notice ("%s\n", buf);
4640 /* If save_temps_flag is off, and the HOST_BIT_BUCKET is
4641 defined, and it is not a directory, and it is
4642 writable, use it. Otherwise, treat this like any
4643 other temporary file. */
4645 if ((!save_temps_flag)
4646 && (stat (HOST_BIT_BUCKET, &st) == 0) && (!S_ISDIR (st.st_mode))
4647 && (access (HOST_BIT_BUCKET, W_OK) == 0))
4649 obstack_grow (&obstack, HOST_BIT_BUCKET,
4650 strlen (HOST_BIT_BUCKET));
4651 delete_this_arg = 0;
4656 goto create_temp_file;
4660 obstack_1grow (&obstack, '-');
4661 delete_this_arg = 0;
4664 /* consume suffix */
4665 while (*p == '.' || ISALPHA ((unsigned char) *p))
4667 if (p[0] == '%' && p[1] == 'O')
4672 goto create_temp_file;
4676 /* consume suffix */
4677 while (*p == '.' || ISALPHA ((unsigned char) *p))
4679 if (p[0] == '%' && p[1] == 'O')
4684 goto create_temp_file;
4690 struct temp_name *t;
4692 const char *suffix = p;
4693 char *saved_suffix = NULL;
4695 while (*p == '.' || ISALPHA ((unsigned char) *p))
4697 suffix_length = p - suffix;
4698 if (p[0] == '%' && p[1] == 'O')
4701 /* We don't support extra suffix characters after %O. */
4702 if (*p == '.' || ISALPHA ((unsigned char) *p))
4704 if (suffix_length == 0)
4705 suffix = TARGET_OBJECT_SUFFIX;
4709 = (char *) xmalloc (suffix_length
4710 + strlen (TARGET_OBJECT_SUFFIX));
4711 strncpy (saved_suffix, suffix, suffix_length);
4712 strcpy (saved_suffix + suffix_length,
4713 TARGET_OBJECT_SUFFIX);
4715 suffix_length += strlen (TARGET_OBJECT_SUFFIX);
4718 /* If the input_filename has the same suffix specified
4719 for the %g, %u, or %U, and -save-temps is specified,
4720 we could end up using that file as an intermediate
4721 thus clobbering the user's source file (.e.g.,
4722 gcc -save-temps foo.s would clobber foo.s with the
4723 output of cpp0). So check for this condition and
4724 generate a temp file as the intermediate. */
4726 if (save_temps_flag)
4728 temp_filename_length = basename_length + suffix_length;
4729 temp_filename = alloca (temp_filename_length + 1);
4730 strncpy ((char *) temp_filename, input_basename, basename_length);
4731 strncpy ((char *) temp_filename + basename_length, suffix,
4733 *((char *) temp_filename + temp_filename_length) = '\0';
4734 if (strcmp (temp_filename, input_filename) != 0)
4736 struct stat st_temp;
4738 /* Note, set_input() resets input_stat_set to 0. */
4739 if (input_stat_set == 0)
4741 input_stat_set = stat (input_filename, &input_stat);
4742 if (input_stat_set >= 0)
4746 /* If we have the stat for the input_filename
4747 and we can do the stat for the temp_filename
4748 then the they could still refer to the same
4749 file if st_dev/st_ino's are the same. */
4751 if (input_stat_set != 1
4752 || stat (temp_filename, &st_temp) < 0
4753 || input_stat.st_dev != st_temp.st_dev
4754 || input_stat.st_ino != st_temp.st_ino)
4756 temp_filename = save_string (temp_filename,
4757 temp_filename_length + 1);
4758 obstack_grow (&obstack, temp_filename,
4759 temp_filename_length);
4761 delete_this_arg = 0;
4767 /* See if we already have an association of %g/%u/%U and
4769 for (t = temp_names; t; t = t->next)
4770 if (t->length == suffix_length
4771 && strncmp (t->suffix, suffix, suffix_length) == 0
4772 && t->unique == (c == 'u' || c == 'U' || c == 'j'))
4775 /* Make a new association if needed. %u and %j
4777 if (t == 0 || c == 'u' || c == 'j')
4781 t = (struct temp_name *) xmalloc (sizeof (struct temp_name));
4782 t->next = temp_names;
4785 t->length = suffix_length;
4788 t->suffix = saved_suffix;
4789 saved_suffix = NULL;
4792 t->suffix = save_string (suffix, suffix_length);
4793 t->unique = (c == 'u' || c == 'U' || c == 'j');
4794 temp_filename = make_temp_file (t->suffix);
4795 temp_filename_length = strlen (temp_filename);
4796 t->filename = temp_filename;
4797 t->filename_length = temp_filename_length;
4801 free (saved_suffix);
4803 obstack_grow (&obstack, t->filename, t->filename_length);
4804 delete_this_arg = 1;
4810 obstack_grow (&obstack, input_filename, input_filename_length);
4816 struct prefix_list *pl = include_prefixes.plist;
4818 if (gcc_exec_prefix)
4820 do_spec_1 ("-iprefix", 1, NULL);
4821 /* Make this a separate argument. */
4822 do_spec_1 (" ", 0, NULL);
4823 do_spec_1 (gcc_exec_prefix, 1, NULL);
4824 do_spec_1 (" ", 0, NULL);
4827 if (target_system_root_changed)
4829 do_spec_1 ("-isysroot", 1, NULL);
4830 /* Make this a separate argument. */
4831 do_spec_1 (" ", 0, NULL);
4832 do_spec_1 (target_system_root, 1, NULL);
4833 do_spec_1 (" ", 0, NULL);
4836 for (; pl; pl = pl->next)
4838 do_spec_1 ("-isystem", 1, NULL);
4839 /* Make this a separate argument. */
4840 do_spec_1 (" ", 0, NULL);
4841 do_spec_1 (pl->prefix, 1, NULL);
4842 do_spec_1 (" ", 0, NULL);
4849 int max = n_infiles;
4850 max += lang_specific_extra_outfiles;
4852 for (i = 0; i < max; i++)
4854 store_arg (outfiles[i], 0, 0);
4859 obstack_grow (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX));
4864 this_is_library_file = 1;
4868 outfiles[input_file_number] = NULL;
4872 this_is_output_file = 1;
4877 int cur_index = argbuf_index;
4878 /* Handle the {...} following the %W. */
4881 p = handle_braces (p + 1);
4884 /* End any pending argument. */
4887 obstack_1grow (&obstack, 0);
4888 string = obstack_finish (&obstack);
4889 if (this_is_library_file)
4890 string = find_file (string);
4891 store_arg (string, delete_this_arg, this_is_output_file);
4892 if (this_is_output_file)
4893 outfiles[input_file_number] = string;
4896 /* If any args were output, mark the last one for deletion
4898 if (argbuf_index != cur_index)
4899 record_temp_file (argbuf[argbuf_index - 1], 0, 1);
4903 /* %x{OPTION} records OPTION for %X to output. */
4909 /* Skip past the option value and make a copy. */
4914 string = save_string (p1 + 1, p - p1 - 2);
4916 /* See if we already recorded this option. */
4917 for (i = 0; i < n_linker_options; i++)
4918 if (! strcmp (string, linker_options[i]))
4924 /* This option is new; add it. */
4925 add_linker_option (string, strlen (string));
4929 /* Dump out the options accumulated previously using %x. */
4931 for (i = 0; i < n_linker_options; i++)
4933 do_spec_1 (linker_options[i], 1, NULL);
4934 /* Make each accumulated option a separate argument. */
4935 do_spec_1 (" ", 0, NULL);
4939 /* Dump out the options accumulated previously using -Wa,. */
4941 for (i = 0; i < n_assembler_options; i++)
4943 do_spec_1 (assembler_options[i], 1, NULL);
4944 /* Make each accumulated option a separate argument. */
4945 do_spec_1 (" ", 0, NULL);
4949 /* Dump out the options accumulated previously using -Wp,. */
4951 for (i = 0; i < n_preprocessor_options; i++)
4953 do_spec_1 (preprocessor_options[i], 1, NULL);
4954 /* Make each accumulated option a separate argument. */
4955 do_spec_1 (" ", 0, NULL);
4959 /* Here are digits and numbers that just process
4960 a certain constant string as a spec. */
4963 value = do_spec_1 (cc1_spec, 0, NULL);
4969 value = do_spec_1 (cc1plus_spec, 0, NULL);
4975 value = do_spec_1 (asm_spec, 0, NULL);
4981 value = do_spec_1 (asm_final_spec, 0, NULL);
4988 const char *const spec
4989 = (input_file_compiler->cpp_spec
4990 ? input_file_compiler->cpp_spec
4992 value = do_spec_1 (spec, 0, NULL);
4999 value = do_spec_1 (endfile_spec, 0, NULL);
5005 value = do_spec_1 (link_spec, 0, NULL);
5011 value = do_spec_1 (lib_spec, 0, NULL);
5017 value = do_spec_1 (libgcc_spec, 0, NULL);
5023 if (multilib_dir && strcmp (multilib_dir, ".") != 0)
5029 len = strlen (multilib_dir);
5030 obstack_blank (&obstack, len + 1);
5031 p = obstack_next_free (&obstack) - (len + 1);
5034 for (q = multilib_dir; *q ; ++q, ++p)
5035 *p = (IS_DIR_SEPARATOR (*q) ? '_' : *q);
5040 /* We assume there is a directory
5041 separator at the end of this string. */
5042 if (target_system_root)
5043 obstack_grow (&obstack, target_system_root,
5044 strlen (target_system_root));
5048 value = do_spec_1 (startfile_spec, 0, NULL);
5053 /* Here we define characters other than letters and digits. */
5056 p = handle_braces (p);
5062 p = handle_spec_function (p);
5068 obstack_1grow (&obstack, '%');
5075 while (p[len] && p[len] != ' ' && p[len] != '%')
5077 suffix_subst = save_string (p - 1, len + 1);
5082 /* Henceforth ignore the option(s) matching the pattern
5087 int have_wildcard = 0;
5090 while (p[len] && p[len] != ' ' && p[len] != '\t')
5093 if (p[len-1] == '*')
5096 for (i = 0; i < n_switches; i++)
5097 if (!strncmp (switches[i].part1, p, len - have_wildcard)
5098 && (have_wildcard || switches[i].part1[len] == '\0'))
5100 switches[i].live_cond = SWITCH_IGNORE;
5101 switches[i].validated = 1;
5109 if (soft_matched_part)
5111 do_spec_1 (soft_matched_part, 1, NULL);
5112 do_spec_1 (" ", 0, NULL);
5115 /* Catch the case where a spec string contains something like
5116 '%{foo:%*}'. ie there is no * in the pattern on the left
5117 hand side of the :. */
5118 error ("spec failure: '%%*' has not been initialized by pattern match");
5121 /* Process a string found as the value of a spec given by name.
5122 This feature allows individual machine descriptions
5123 to add and use their own specs.
5124 %[...] modifies -D options the way %P does;
5125 %(...) uses the spec unmodified. */
5127 error ("warning: use of obsolete %%[ operator in specs");
5130 const char *name = p;
5131 struct spec_list *sl;
5134 /* The string after the S/P is the name of a spec that is to be
5136 while (*p && *p != ')' && *p != ']')
5139 /* See if it's in the list. */
5140 for (len = p - name, sl = specs; sl; sl = sl->next)
5141 if (sl->name_len == len && !strncmp (sl->name, name, len))
5143 name = *(sl->ptr_spec);
5145 notice ("Processing spec %c%s%c, which is '%s'\n",
5146 c, sl->name, (c == '(') ? ')' : ']', name);
5155 value = do_spec_1 (name, 0, NULL);
5161 char *x = (char *) alloca (strlen (name) * 2 + 1);
5163 const char *y = name;
5166 /* Copy all of NAME into BUF, but put __ after
5167 every -D and at the end of each arg. */
5170 if (! strncmp (y, "-D", 2))
5181 && (*y == ' ' || *y == '\t' || *y == '='
5182 || *y == '}' || *y == 0))
5195 value = do_spec_1 (buf, 0, NULL);
5201 /* Discard the closing paren or bracket. */
5208 error ("spec failure: unrecognized spec option '%c'", c);
5214 /* Backslash: treat next character as ordinary. */
5219 /* Ordinary character: put it into the current argument. */
5220 obstack_1grow (&obstack, c);
5224 /* End of string. If we are processing a spec function, we need to
5225 end any pending argument. */
5226 if (processing_spec_function && arg_going)
5228 obstack_1grow (&obstack, 0);
5229 string = obstack_finish (&obstack);
5230 if (this_is_library_file)
5231 string = find_file (string);
5232 store_arg (string, delete_this_arg, this_is_output_file);
5233 if (this_is_output_file)
5234 outfiles[input_file_number] = string;
5241 /* Look up a spec function. */
5243 static const struct spec_function *
5244 lookup_spec_function (name)
5247 static const struct spec_function * const spec_function_tables[] =
5249 static_spec_functions,
5250 lang_specific_spec_functions,
5252 const struct spec_function *sf;
5255 for (i = 0; i < ARRAY_SIZE (spec_function_tables); i++)
5257 for (sf = spec_function_tables[i]; sf->name != NULL; sf++)
5258 if (strcmp (sf->name, name) == 0)
5265 /* Evaluate a spec function. */
5268 eval_spec_function (func, args)
5269 const char *func, *args;
5271 const struct spec_function *sf;
5272 const char *funcval;
5274 /* Saved spec processing context. */
5275 int save_argbuf_index;
5276 int save_argbuf_length;
5277 const char **save_argbuf;
5280 int save_delete_this_arg;
5281 int save_this_is_output_file;
5282 int save_this_is_library_file;
5283 int save_input_from_pipe;
5284 const char *save_suffix_subst;
5287 sf = lookup_spec_function (func);
5289 fatal ("unknown spec function `%s'", func);
5291 /* Push the spec processing context. */
5292 save_argbuf_index = argbuf_index;
5293 save_argbuf_length = argbuf_length;
5294 save_argbuf = argbuf;
5296 save_arg_going = arg_going;
5297 save_delete_this_arg = delete_this_arg;
5298 save_this_is_output_file = this_is_output_file;
5299 save_this_is_library_file = this_is_library_file;
5300 save_input_from_pipe = input_from_pipe;
5301 save_suffix_subst = suffix_subst;
5303 /* Create a new spec processing context, and build the function
5307 if (do_spec_2 (args) < 0)
5308 fatal ("error in args to spec function `%s'", func);
5310 /* argbuf_index is an index for the next argument to be inserted, and
5311 so contains the count of the args already inserted. */
5313 funcval = (*sf->func) (argbuf_index, argbuf);
5315 /* Pop the spec processing context. */
5316 argbuf_index = save_argbuf_index;
5317 argbuf_length = save_argbuf_length;
5319 argbuf = save_argbuf;
5321 arg_going = save_arg_going;
5322 delete_this_arg = save_delete_this_arg;
5323 this_is_output_file = save_this_is_output_file;
5324 this_is_library_file = save_this_is_library_file;
5325 input_from_pipe = save_input_from_pipe;
5326 suffix_subst = save_suffix_subst;
5331 /* Handle a spec function call of the form:
5335 ARGS is processed as a spec in a separate context and split into an
5336 argument vector in the normal fashion. The function returns a string
5337 containing a spec which we then process in the caller's context, or
5338 NULL if no processing is required. */
5341 handle_spec_function (p)
5345 const char *endp, *funcval;
5348 processing_spec_function++;
5350 /* Get the function name. */
5351 for (endp = p; *endp != '\0'; endp++)
5353 if (*endp == '(') /* ) */
5355 /* Only allow [A-Za-z0-9], -, and _ in function names. */
5356 if (!ISALNUM (*endp) && !(*endp == '-' || *endp == '_'))
5357 fatal ("malformed spec function name");
5359 if (*endp != '(') /* ) */
5360 fatal ("no arguments for spec function");
5361 func = save_string (p, endp - p);
5364 /* Get the arguments. */
5365 for (count = 0; *endp != '\0'; endp++)
5374 else if (*endp == '(') /* ) */
5379 fatal ("malformed spec function arguments");
5380 args = save_string (p, endp - p);
5383 /* p now points to just past the end of the spec function expression. */
5385 funcval = eval_spec_function (func, args);
5386 if (funcval != NULL && do_spec_1 (funcval, 0, NULL) < 0)
5392 processing_spec_function--;
5397 /* Inline subroutine of handle_braces. Returns true if the current
5398 input suffix matches the atom bracketed by ATOM and END_ATOM. */
5400 input_suffix_matches (atom, end_atom)
5402 const char *end_atom;
5404 return (input_suffix
5405 && !strncmp (input_suffix, atom, end_atom - atom)
5406 && input_suffix[end_atom - atom] == '\0');
5409 /* Inline subroutine of handle_braces. Returns true if a switch
5410 matching the atom bracketed by ATOM and END_ATOM appeared on the
5413 switch_matches (atom, end_atom, starred)
5415 const char *end_atom;
5419 int len = end_atom - atom;
5420 int plen = starred ? len : -1;
5422 for (i = 0; i < n_switches; i++)
5423 if (!strncmp (switches[i].part1, atom, len)
5424 && (starred || switches[i].part1[len] == '\0')
5425 && check_live_switch (i, plen))
5431 /* Inline subroutine of handle_braces. Mark all of the switches which
5432 match ATOM (extends to END_ATOM; STARRED indicates whether there
5433 was a star after the atom) for later processing. */
5435 mark_matching_switches (atom, end_atom, starred)
5437 const char *end_atom;
5441 int len = end_atom - atom;
5442 int plen = starred ? len : -1;
5444 for (i = 0; i < n_switches; i++)
5445 if (!strncmp (switches[i].part1, atom, len)
5446 && (starred || switches[i].part1[len] == '\0')
5447 && check_live_switch (i, plen))
5448 switches[i].ordering = 1;
5451 /* Inline subroutine of handle_braces. Process all the currently
5452 marked switches through give_switch, and clear the marks. */
5454 process_marked_switches ()
5458 for (i = 0; i < n_switches; i++)
5459 if (switches[i].ordering == 1)
5461 switches[i].ordering = 0;
5466 /* Handle a %{ ... } construct. P points just inside the leading {.
5467 Returns a pointer one past the end of the brace block, or 0
5468 if we call do_spec_1 and that returns -1. */
5474 const char *atom, *end_atom;
5475 const char *d_atom = NULL, *d_end_atom = NULL;
5482 bool a_must_be_last = false;
5483 bool ordered_set = false;
5484 bool disjunct_set = false;
5485 bool disj_matched = false;
5486 bool disj_starred = true;
5487 bool n_way_choice = false;
5488 bool n_way_matched = false;
5490 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
5497 /* Scan one "atom" (S in the description above of %{}, possibly
5498 with !, ., or * modifiers). */
5499 a_matched = a_is_suffix = a_is_starred = a_is_negated = false;
5503 p++, a_is_negated = true;
5507 p++, a_is_suffix = true;
5510 while (ISIDNUM(*p) || *p == '-' || *p == '+' || *p == '='
5511 || *p == ',' || *p == '.' || *p == '@')
5516 p++, a_is_starred = 1;
5519 if (*p == '&' || *p == '}')
5521 /* Substitute the switch(es) indicated by the current atom. */
5523 if (disjunct_set || n_way_choice || a_is_negated || a_is_suffix
5524 || atom == end_atom)
5527 mark_matching_switches (atom, end_atom, a_is_starred);
5530 process_marked_switches ();
5532 else if (*p == '|' || *p == ':')
5534 /* Substitute some text if the current atom appears as a switch
5536 disjunct_set = true;
5540 if (atom == end_atom)
5542 if (!n_way_choice || disj_matched || *p == '|'
5543 || a_is_negated || a_is_suffix || a_is_starred)
5546 /* An empty term may appear as the last choice of an
5547 N-way choice set; it means "otherwise". */
5548 a_must_be_last = true;
5549 disj_matched = !n_way_matched;
5550 disj_starred = false;
5554 if (a_is_suffix && a_is_starred)
5558 disj_starred = false;
5560 /* Don't bother testing this atom if we already have a
5562 if (!disj_matched && !n_way_matched)
5565 a_matched = input_suffix_matches (atom, end_atom);
5567 a_matched = switch_matches (atom, end_atom, a_is_starred);
5569 if (a_matched != a_is_negated)
5571 disj_matched = true;
5573 d_end_atom = end_atom;
5580 /* Found the body, that is, the text to substitute if the
5581 current disjunction matches. */
5582 p = process_brace_body (p + 1, d_atom, d_end_atom, disj_starred,
5583 disj_matched && !n_way_matched);
5587 /* If we have an N-way choice, reset state for the next
5591 n_way_choice = true;
5592 n_way_matched |= disj_matched;
5593 disj_matched = false;
5594 disj_starred = true;
5595 d_atom = d_end_atom = NULL;
5602 while (*p++ != '}');
5609 /* Subroutine of handle_braces. Scan and process a brace substitution body
5610 (X in the description of %{} syntax). P points one past the colon;
5611 ATOM and END_ATOM bracket the first atom which was found to be true
5612 (present) in the current disjunction; STARRED indicates whether all
5613 the atoms in the current disjunction were starred (for syntax validation);
5614 MATCHED indicates whether the disjunction matched or not, and therefore
5615 whether or not the body is to be processed through do_spec_1 or just
5616 skipped. Returns a pointer to the closing } or ;, or 0 if do_spec_1
5620 process_brace_body (p, atom, end_atom, starred, matched)
5623 const char *end_atom;
5627 const char *body, *end_body;
5628 unsigned int nesting_level;
5629 bool have_subst = false;
5631 /* Locate the closing } or ;, honoring nested braces.
5632 Trim trailing whitespace. */
5641 if (!--nesting_level)
5644 else if (*p == ';' && nesting_level == 1)
5646 else if (*p == '%' && p[1] == '*' && nesting_level == 1)
5648 else if (*p == '\0')
5654 while (end_body[-1] == ' ' || end_body[-1] == '\t')
5657 if (have_subst && !starred)
5662 /* Copy the substitution body to permanent storage and execute it.
5663 If have_subst is false, this is a simple matter of running the
5664 body through do_spec_1... */
5665 char *string = save_string (body, end_body - body);
5668 if (do_spec_1 (string, 0, NULL) < 0)
5673 /* ... but if have_subst is true, we have to process the
5674 body once for each matching switch, with %* set to the
5675 variant part of the switch. */
5676 unsigned int hard_match_len = end_atom - atom;
5679 for (i = 0; i < n_switches; i++)
5680 if (!strncmp (switches[i].part1, atom, hard_match_len)
5681 && check_live_switch (i, hard_match_len))
5683 if (do_spec_1 (string, 0,
5684 &switches[i].part1[hard_match_len]) < 0)
5686 /* Pass any arguments this switch has. */
5688 suffix_subst = NULL;
5696 /* Return 0 iff switch number SWITCHNUM is obsoleted by a later switch
5697 on the command line. PREFIX_LENGTH is the length of XXX in an {XXX*}
5698 spec, or -1 if either exact match or %* is used.
5700 A -O switch is obsoleted by a later -O switch. A -f, -m, or -W switch
5701 whose value does not begin with "no-" is obsoleted by the same value
5702 with the "no-", similarly for a switch with the "no-" prefix. */
5705 check_live_switch (switchnum, prefix_length)
5709 const char *name = switches[switchnum].part1;
5712 /* In the common case of {<at-most-one-letter>*}, a negating
5713 switch would always match, so ignore that case. We will just
5714 send the conflicting switches to the compiler phase. */
5715 if (prefix_length >= 0 && prefix_length <= 1)
5718 /* If we already processed this switch and determined if it was
5719 live or not, return our past determination. */
5720 if (switches[switchnum].live_cond != 0)
5721 return switches[switchnum].live_cond > 0;
5723 /* Now search for duplicate in a manner that depends on the name. */
5727 for (i = switchnum + 1; i < n_switches; i++)
5728 if (switches[i].part1[0] == 'O')
5730 switches[switchnum].validated = 1;
5731 switches[switchnum].live_cond = SWITCH_FALSE;
5736 case 'W': case 'f': case 'm':
5737 if (! strncmp (name + 1, "no-", 3))
5739 /* We have Xno-YYY, search for XYYY. */
5740 for (i = switchnum + 1; i < n_switches; i++)
5741 if (switches[i].part1[0] == name[0]
5742 && ! strcmp (&switches[i].part1[1], &name[4]))
5744 switches[switchnum].validated = 1;
5745 switches[switchnum].live_cond = SWITCH_FALSE;
5751 /* We have XYYY, search for Xno-YYY. */
5752 for (i = switchnum + 1; i < n_switches; i++)
5753 if (switches[i].part1[0] == name[0]
5754 && switches[i].part1[1] == 'n'
5755 && switches[i].part1[2] == 'o'
5756 && switches[i].part1[3] == '-'
5757 && !strcmp (&switches[i].part1[4], &name[1]))
5759 switches[switchnum].validated = 1;
5760 switches[switchnum].live_cond = SWITCH_FALSE;
5767 /* Otherwise the switch is live. */
5768 switches[switchnum].live_cond = SWITCH_LIVE;
5772 /* Pass a switch to the current accumulating command
5773 in the same form that we received it.
5774 SWITCHNUM identifies the switch; it is an index into
5775 the vector of switches gcc received, which is `switches'.
5776 This cannot fail since it never finishes a command line.
5778 If OMIT_FIRST_WORD is nonzero, then we omit .part1 of the argument. */
5781 give_switch (switchnum, omit_first_word)
5783 int omit_first_word;
5785 if (switches[switchnum].live_cond == SWITCH_IGNORE)
5788 if (!omit_first_word)
5790 do_spec_1 ("-", 0, NULL);
5791 do_spec_1 (switches[switchnum].part1, 1, NULL);
5794 if (switches[switchnum].args != 0)
5797 for (p = switches[switchnum].args; *p; p++)
5799 const char *arg = *p;
5801 do_spec_1 (" ", 0, NULL);
5804 unsigned length = strlen (arg);
5807 while (length-- && !IS_DIR_SEPARATOR (arg[length]))
5808 if (arg[length] == '.')
5810 ((char *)arg)[length] = 0;
5814 do_spec_1 (arg, 1, NULL);
5816 ((char *)arg)[length] = '.';
5817 do_spec_1 (suffix_subst, 1, NULL);
5820 do_spec_1 (arg, 1, NULL);
5824 do_spec_1 (" ", 0, NULL);
5825 switches[switchnum].validated = 1;
5828 /* Search for a file named NAME trying various prefixes including the
5829 user's -B prefix and some standard ones.
5830 Return the absolute file name found. If nothing is found, return NAME. */
5838 /* Try multilib_dir if it is defined. */
5839 if (multilib_os_dir != NULL)
5841 newname = find_a_file (&startfile_prefixes, name, R_OK, 1);
5843 /* If we don't find it in the multi library dir, then fall
5844 through and look for it in the normal places. */
5845 if (newname != NULL)
5849 newname = find_a_file (&startfile_prefixes, name, R_OK, 0);
5850 return newname ? newname : name;
5853 /* Determine whether a directory exists. If LINKER, return 0 for
5854 certain fixed names not needed by the linker. If not LINKER, it is
5855 only important to return 0 if the host machine has a small ARG_MAX
5859 is_directory (path1, path2, linker)
5864 int len1 = strlen (path1);
5865 int len2 = strlen (path2);
5866 char *path = (char *) alloca (3 + len1 + len2);
5870 #ifndef SMALL_ARG_MAX
5875 /* Construct the path from the two parts. Ensure the string ends with "/.".
5876 The resulting path will be a directory even if the given path is a
5878 memcpy (path, path1, len1);
5879 memcpy (path + len1, path2, len2);
5880 cp = path + len1 + len2;
5881 if (!IS_DIR_SEPARATOR (cp[-1]))
5882 *cp++ = DIR_SEPARATOR;
5886 /* Exclude directories that the linker is known to search. */
5889 && strcmp (path, concat (dir_separator_str, "lib",
5890 dir_separator_str, ".", NULL)) == 0)
5892 && strcmp (path, concat (dir_separator_str, "usr",
5893 dir_separator_str, "lib",
5894 dir_separator_str, ".", NULL)) == 0)))
5897 return (stat (path, &st) >= 0 && S_ISDIR (st.st_mode));
5900 /* Set up the various global variables to indicate that we're processing
5901 the input file named FILENAME. */
5904 set_input (filename)
5905 const char *filename;
5909 input_filename = filename;
5910 input_filename_length = strlen (input_filename);
5912 input_basename = input_filename;
5913 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
5914 /* Skip drive name so 'x:foo' is handled properly. */
5915 if (input_basename[1] == ':')
5916 input_basename += 2;
5918 for (p = input_basename; *p; p++)
5919 if (IS_DIR_SEPARATOR (*p))
5920 input_basename = p + 1;
5922 /* Find a suffix starting with the last period,
5923 and set basename_length to exclude that suffix. */
5924 basename_length = strlen (input_basename);
5925 suffixed_basename_length = basename_length;
5926 p = input_basename + basename_length;
5927 while (p != input_basename && *p != '.')
5929 if (*p == '.' && p != input_basename)
5931 basename_length = p - input_basename;
5932 input_suffix = p + 1;
5937 /* If a spec for 'g', 'u', or 'U' is seen with -save-temps then
5938 we will need to do a stat on the input_filename. The
5939 INPUT_STAT_SET signals that the stat is needed. */
5943 /* On fatal signals, delete all the temporary files. */
5946 fatal_error (signum)
5949 signal (signum, SIG_DFL);
5950 delete_failure_queue ();
5951 delete_temp_files ();
5952 /* Get the same signal again, this time not handled,
5953 so its normal effect occurs. */
5954 kill (getpid (), signum);
5957 extern int main PARAMS ((int, const char *const *));
5962 const char *const *argv;
5966 int linker_was_run = 0;
5967 int num_linker_inputs = 0;
5968 char *explicit_link_files;
5971 struct user_specs *uptr;
5973 p = argv[0] + strlen (argv[0]);
5974 while (p != argv[0] && !IS_DIR_SEPARATOR (p[-1]))
5978 xmalloc_set_program_name (programname);
5980 #ifdef GCC_DRIVER_HOST_INITIALIZATION
5981 /* Perform host dependent initialization when needed. */
5982 GCC_DRIVER_HOST_INITIALIZATION;
5985 gcc_init_libintl ();
5987 if (signal (SIGINT, SIG_IGN) != SIG_IGN)
5988 signal (SIGINT, fatal_error);
5990 if (signal (SIGHUP, SIG_IGN) != SIG_IGN)
5991 signal (SIGHUP, fatal_error);
5993 if (signal (SIGTERM, SIG_IGN) != SIG_IGN)
5994 signal (SIGTERM, fatal_error);
5996 if (signal (SIGPIPE, SIG_IGN) != SIG_IGN)
5997 signal (SIGPIPE, fatal_error);
6000 /* We *MUST* set SIGCHLD to SIG_DFL so that the wait4() call will
6001 receive the signal. A different setting is inheritable */
6002 signal (SIGCHLD, SIG_DFL);
6005 /* Allocate the argument vector. */
6008 obstack_init (&obstack);
6010 /* Build multilib_select, et. al from the separate lines that make up each
6011 multilib selection. */
6013 const char *const *q = multilib_raw;
6016 obstack_init (&multilib_obstack);
6017 while ((p = *q++) != (char *) 0)
6018 obstack_grow (&multilib_obstack, p, strlen (p));
6020 obstack_1grow (&multilib_obstack, 0);
6021 multilib_select = obstack_finish (&multilib_obstack);
6023 q = multilib_matches_raw;
6024 while ((p = *q++) != (char *) 0)
6025 obstack_grow (&multilib_obstack, p, strlen (p));
6027 obstack_1grow (&multilib_obstack, 0);
6028 multilib_matches = obstack_finish (&multilib_obstack);
6030 q = multilib_exclusions_raw;
6031 while ((p = *q++) != (char *) 0)
6032 obstack_grow (&multilib_obstack, p, strlen (p));
6034 obstack_1grow (&multilib_obstack, 0);
6035 multilib_exclusions = obstack_finish (&multilib_obstack);
6038 for (i = 0; i < ARRAY_SIZE (multilib_defaults_raw); i++)
6041 obstack_1grow (&multilib_obstack, ' ');
6042 obstack_grow (&multilib_obstack,
6043 multilib_defaults_raw[i],
6044 strlen (multilib_defaults_raw[i]));
6048 obstack_1grow (&multilib_obstack, 0);
6049 multilib_defaults = obstack_finish (&multilib_obstack);
6052 /* Set up to remember the pathname of gcc and any options
6053 needed for collect. We use argv[0] instead of programname because
6054 we need the complete pathname. */
6055 obstack_init (&collect_obstack);
6056 obstack_grow (&collect_obstack, "COLLECT_GCC=", sizeof ("COLLECT_GCC=") - 1);
6057 obstack_grow (&collect_obstack, argv[0], strlen (argv[0]) + 1);
6058 putenv (obstack_finish (&collect_obstack));
6060 #ifdef INIT_ENVIRONMENT
6061 /* Set up any other necessary machine specific environment variables. */
6062 putenv (INIT_ENVIRONMENT);
6065 /* Make a table of what switches there are (switches, n_switches).
6066 Make a table of specified input files (infiles, n_infiles).
6067 Decode switches that are handled locally. */
6069 process_command (argc, argv);
6071 /* Initialize the vector of specs to just the default.
6072 This means one element containing 0s, as a terminator. */
6074 compilers = (struct compiler *) xmalloc (sizeof default_compilers);
6075 memcpy ((char *) compilers, (char *) default_compilers,
6076 sizeof default_compilers);
6077 n_compilers = n_default_compilers;
6079 /* Read specs from a file if there is one. */
6081 machine_suffix = concat (spec_machine, dir_separator_str,
6082 spec_version, dir_separator_str, NULL);
6083 just_machine_suffix = concat (spec_machine, dir_separator_str, NULL);
6085 specs_file = find_a_file (&startfile_prefixes, "specs", R_OK, 0);
6086 /* Read the specs file unless it is a default one. */
6087 if (specs_file != 0 && strcmp (specs_file, "specs"))
6088 read_specs (specs_file, TRUE);
6092 /* We need to check standard_exec_prefix/just_machine_suffix/specs
6093 for any override of as, ld and libraries. */
6094 specs_file = (char *) alloca (strlen (standard_exec_prefix)
6095 + strlen (just_machine_suffix)
6096 + sizeof ("specs"));
6098 strcpy (specs_file, standard_exec_prefix);
6099 strcat (specs_file, just_machine_suffix);
6100 strcat (specs_file, "specs");
6101 if (access (specs_file, R_OK) == 0)
6102 read_specs (specs_file, TRUE);
6104 /* Process any configure-time defaults specified for the command line
6105 options, via OPTION_DEFAULT_SPECS. */
6106 for (i = 0; i < ARRAY_SIZE (option_default_specs); i++)
6107 do_option_spec (option_default_specs[i].name,
6108 option_default_specs[i].spec);
6110 /* Process DRIVER_SELF_SPECS, adding any new options to the end
6111 of the command line. */
6113 for (i = 0; i < ARRAY_SIZE (driver_self_specs); i++)
6114 do_self_spec (driver_self_specs[i]);
6116 /* If not cross-compiling, look for executables in the standard
6118 if (*cross_compile == '0')
6120 if (*md_exec_prefix)
6122 add_prefix (&exec_prefixes, md_exec_prefix, "GCC",
6123 PREFIX_PRIORITY_LAST, 0, NULL, 0);
6127 /* Look for startfiles in the standard places. */
6128 if (*startfile_prefix_spec != 0
6129 && do_spec_2 (startfile_prefix_spec) == 0
6130 && do_spec_1 (" ", 0, NULL) == 0)
6133 for (ndx = 0; ndx < argbuf_index; ndx++)
6134 add_sysrooted_prefix (&startfile_prefixes, argbuf[ndx], "BINUTILS",
6135 PREFIX_PRIORITY_LAST, 0, NULL, 1);
6137 /* We should eventually get rid of all these and stick to
6138 startfile_prefix_spec exclusively. */
6139 else if (*cross_compile == '0' || target_system_root)
6141 if (*md_exec_prefix)
6142 add_sysrooted_prefix (&startfile_prefixes, md_exec_prefix, "GCC",
6143 PREFIX_PRIORITY_LAST, 0, NULL, 1);
6145 if (*md_startfile_prefix)
6146 add_sysrooted_prefix (&startfile_prefixes, md_startfile_prefix,
6147 "GCC", PREFIX_PRIORITY_LAST, 0, NULL, 1);
6149 if (*md_startfile_prefix_1)
6150 add_sysrooted_prefix (&startfile_prefixes, md_startfile_prefix_1,
6151 "GCC", PREFIX_PRIORITY_LAST, 0, NULL, 1);
6153 /* If standard_startfile_prefix is relative, base it on
6154 standard_exec_prefix. This lets us move the installed tree
6155 as a unit. If GCC_EXEC_PREFIX is defined, base
6156 standard_startfile_prefix on that as well. */
6157 if (IS_ABSOLUTE_PATHNAME (standard_startfile_prefix))
6158 add_sysrooted_prefix (&startfile_prefixes,
6159 standard_startfile_prefix, "BINUTILS",
6160 PREFIX_PRIORITY_LAST, 0, NULL, 1);
6163 if (gcc_exec_prefix)
6164 add_prefix (&startfile_prefixes,
6165 concat (gcc_exec_prefix, machine_suffix,
6166 standard_startfile_prefix, NULL),
6167 NULL, PREFIX_PRIORITY_LAST, 0, NULL, 1);
6168 add_prefix (&startfile_prefixes,
6169 concat (standard_exec_prefix,
6171 standard_startfile_prefix, NULL),
6172 NULL, PREFIX_PRIORITY_LAST, 0, NULL, 1);
6175 add_sysrooted_prefix (&startfile_prefixes, standard_startfile_prefix_1,
6176 "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL, 1);
6177 add_sysrooted_prefix (&startfile_prefixes, standard_startfile_prefix_2,
6178 "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL, 1);
6179 #if 0 /* Can cause surprises, and one can use -B./ instead. */
6180 add_prefix (&startfile_prefixes, "./", NULL,
6181 PREFIX_PRIORITY_LAST, 1, NULL, 0);
6185 /* Process any user specified specs in the order given on the command
6187 for (uptr = user_specs_head; uptr; uptr = uptr->next)
6189 char *filename = find_a_file (&startfile_prefixes, uptr->filename,
6191 read_specs (filename ? filename : uptr->filename, FALSE);
6194 /* If we have a GCC_EXEC_PREFIX envvar, modify it for cpp's sake. */
6195 if (gcc_exec_prefix)
6196 gcc_exec_prefix = concat (gcc_exec_prefix, spec_machine, dir_separator_str,
6197 spec_version, dir_separator_str, NULL);
6199 /* Now we have the specs.
6200 Set the `valid' bits for switches that match anything in any spec. */
6202 validate_all_switches ();
6204 /* Now that we have the switches and the specs, set
6205 the subdirectory based on the options. */
6206 set_multilib_dir ();
6208 /* Warn about any switches that no pass was interested in. */
6210 for (i = 0; (int) i < n_switches; i++)
6211 if (! switches[i].validated)
6212 error ("unrecognized option `-%s'", switches[i].part1);
6214 /* Obey some of the options. */
6216 if (print_search_dirs)
6218 printf (_("install: %s%s\n"), standard_exec_prefix, machine_suffix);
6219 printf (_("programs: %s\n"), build_search_list (&exec_prefixes, "", 0));
6220 printf (_("libraries: %s\n"), build_search_list (&startfile_prefixes, "", 0));
6224 if (print_file_name)
6226 printf ("%s\n", find_file (print_file_name));
6230 if (print_prog_name)
6232 char *newname = find_a_file (&exec_prefixes, print_prog_name, X_OK, 0);
6233 printf ("%s\n", (newname ? newname : print_prog_name));
6237 if (print_multi_lib)
6239 print_multilib_info ();
6243 if (print_multi_directory)
6245 if (multilib_dir == NULL)
6248 printf ("%s\n", multilib_dir);
6252 if (print_multi_os_directory)
6254 if (multilib_os_dir == NULL)
6257 printf ("%s\n", multilib_os_dir);
6261 if (target_help_flag)
6263 /* Print if any target specific options. */
6265 /* We do not exit here. Instead we have created a fake input file
6266 called 'target-dummy' which needs to be compiled, and we pass this
6267 on to the various sub-processes, along with the --target-help
6271 if (print_help_list)
6277 printf (_("\nFor bug reporting instructions, please see:\n"));
6278 printf ("%s.\n", bug_report_url);
6283 /* We do not exit here. Instead we have created a fake input file
6284 called 'help-dummy' which needs to be compiled, and we pass this
6285 on the various sub-processes, along with the --help switch. */
6293 notice ("Configured with: %s\n", configuration_arguments);
6295 #ifdef THREAD_MODEL_SPEC
6296 /* We could have defined THREAD_MODEL_SPEC to "%*" by default,
6297 but there's no point in doing all this processing just to get
6298 thread_model back. */
6299 obstack_init (&obstack);
6300 do_spec_1 (THREAD_MODEL_SPEC, 0, thread_model);
6301 obstack_1grow (&obstack, '\0');
6302 thrmod = obstack_finish (&obstack);
6304 thrmod = thread_model;
6307 notice ("Thread model: %s\n", thrmod);
6309 /* compiler_version is truncated at the first space when initialized
6310 from version string, so truncate version_string at the first space
6311 before comparing. */
6312 for (n = 0; version_string[n]; n++)
6313 if (version_string[n] == ' ')
6316 if (! strncmp (version_string, compiler_version, n)
6317 && compiler_version[n] == 0)
6318 notice ("gcc version %s\n", version_string);
6320 notice ("gcc driver version %s executing gcc version %s\n",
6321 version_string, compiler_version);
6327 if (n_infiles == added_libraries)
6328 fatal ("no input files");
6330 /* Make a place to record the compiler output file names
6331 that correspond to the input files. */
6334 i += lang_specific_extra_outfiles;
6335 outfiles = (const char **) xcalloc (i, sizeof (char *));
6337 /* Record which files were specified explicitly as link input. */
6339 explicit_link_files = xcalloc (1, n_infiles);
6341 for (i = 0; (int) i < n_infiles; i++)
6343 int this_file_error = 0;
6345 /* Tell do_spec what to substitute for %i. */
6347 input_file_number = i;
6348 set_input (infiles[i].name);
6350 /* Use the same thing in %o, unless cp->spec says otherwise. */
6352 outfiles[i] = input_filename;
6354 /* Figure out which compiler from the file's suffix. */
6357 = lookup_compiler (infiles[i].name, input_filename_length,
6358 infiles[i].language);
6360 if (input_file_compiler)
6362 /* Ok, we found an applicable compiler. Run its spec. */
6364 if (input_file_compiler->spec[0] == '#')
6366 error ("%s: %s compiler not installed on this system",
6367 input_filename, &input_file_compiler->spec[1]);
6368 this_file_error = 1;
6372 value = do_spec (input_file_compiler->spec);
6374 this_file_error = 1;
6378 /* If this file's name does not contain a recognized suffix,
6379 record it as explicit linker input. */
6382 explicit_link_files[i] = 1;
6384 /* Clear the delete-on-failure queue, deleting the files in it
6385 if this compilation failed. */
6387 if (this_file_error)
6389 delete_failure_queue ();
6392 /* If this compilation succeeded, don't delete those files later. */
6393 clear_failure_queue ();
6396 /* Reset the output file name to the first input file name, for use
6397 with %b in LINK_SPEC on a target that prefers not to emit a.out
6400 set_input (infiles[0].name);
6402 if (error_count == 0)
6404 /* Make sure INPUT_FILE_NUMBER points to first available open
6406 input_file_number = n_infiles;
6407 if (lang_specific_pre_link ())
6411 /* Determine if there are any linker input files. */
6412 num_linker_inputs = 0;
6413 for (i = 0; (int) i < n_infiles; i++)
6414 if (explicit_link_files[i] || outfiles[i] != NULL)
6415 num_linker_inputs++;
6417 /* Run ld to link all the compiler output files. */
6419 if (num_linker_inputs > 0 && error_count == 0)
6421 int tmp = execution_count;
6423 /* We'll use ld if we can't find collect2. */
6424 if (! strcmp (linker_name_spec, "collect2"))
6426 char *s = find_a_file (&exec_prefixes, "collect2", X_OK, 0);
6428 linker_name_spec = "ld";
6430 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
6432 putenv_from_prefixes (&exec_prefixes, "COMPILER_PATH");
6433 putenv_from_prefixes (&startfile_prefixes, LIBRARY_PATH_ENV);
6435 value = do_spec (link_command_spec);
6438 linker_was_run = (tmp != execution_count);
6441 /* If options said don't run linker,
6442 complain about input files to be given to the linker. */
6444 if (! linker_was_run && error_count == 0)
6445 for (i = 0; (int) i < n_infiles; i++)
6446 if (explicit_link_files[i])
6447 error ("%s: linker input file unused because linking not done",
6450 /* Delete some or all of the temporary files we made. */
6453 delete_failure_queue ();
6454 delete_temp_files ();
6456 if (print_help_list)
6458 printf (("\nFor bug reporting instructions, please see:\n"));
6459 printf ("%s\n", bug_report_url);
6462 return (signal_count != 0 ? 2
6463 : error_count > 0 ? (pass_exit_codes ? greatest_status : 1)
6467 /* Find the proper compilation spec for the file name NAME,
6468 whose length is LENGTH. LANGUAGE is the specified language,
6469 or 0 if this file is to be passed to the linker. */
6471 static struct compiler *
6472 lookup_compiler (name, length, language)
6475 const char *language;
6477 struct compiler *cp;
6479 /* If this was specified by the user to be a linker input, indicate that. */
6480 if (language != 0 && language[0] == '*')
6483 /* Otherwise, look for the language, if one is spec'd. */
6486 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6487 if (cp->suffix[0] == '@' && !strcmp (cp->suffix + 1, language))
6490 error ("language %s not recognized", language);
6494 /* Look for a suffix. */
6495 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6497 if (/* The suffix `-' matches only the file name `-'. */
6498 (!strcmp (cp->suffix, "-") && !strcmp (name, "-"))
6499 || (strlen (cp->suffix) < length
6500 /* See if the suffix matches the end of NAME. */
6501 && !strcmp (cp->suffix,
6502 name + length - strlen (cp->suffix))
6507 #if defined (OS2) ||defined (HAVE_DOS_BASED_FILE_SYSTEM)
6508 /* look again, but case-insensitively this time. */
6510 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6512 if (/* The suffix `-' matches only the file name `-'. */
6513 (!strcmp (cp->suffix, "-") && !strcmp (name, "-"))
6514 || (strlen (cp->suffix) < length
6515 /* See if the suffix matches the end of NAME. */
6516 && ((!strcmp (cp->suffix,
6517 name + length - strlen (cp->suffix))
6518 || !strpbrk (cp->suffix, "ABCDEFGHIJKLMNOPQRSTUVWXYZ"))
6519 && !strcasecmp (cp->suffix,
6520 name + length - strlen (cp->suffix)))
6526 if (cp >= compilers)
6528 if (cp->spec[0] != '@')
6529 /* A non-alias entry: return it. */
6532 /* An alias entry maps a suffix to a language.
6533 Search for the language; pass 0 for NAME and LENGTH
6534 to avoid infinite recursion if language not found. */
6535 return lookup_compiler (NULL, 0, cp->spec + 1);
6541 save_string (s, len)
6545 char *result = xmalloc (len + 1);
6547 memcpy (result, s, len);
6553 pfatal_with_name (name)
6556 perror_with_name (name);
6557 delete_temp_files ();
6562 perror_with_name (name)
6565 error ("%s: %s", name, xstrerror (errno));
6569 pfatal_pexecute (errmsg_fmt, errmsg_arg)
6570 const char *errmsg_fmt;
6571 const char *errmsg_arg;
6575 int save_errno = errno;
6577 /* Space for trailing '\0' is in %s. */
6578 char *msg = xmalloc (strlen (errmsg_fmt) + strlen (errmsg_arg));
6579 sprintf (msg, errmsg_fmt, errmsg_arg);
6585 pfatal_with_name (errmsg_fmt);
6588 /* Output an error message and exit */
6593 fatal ("internal gcc abort");
6596 /* Output an error message and exit */
6599 fatal (const char *msgid, ...)
6603 va_start (ap, msgid);
6605 fprintf (stderr, "%s: ", programname);
6606 vfprintf (stderr, _(msgid), ap);
6608 fprintf (stderr, "\n");
6609 delete_temp_files ();
6614 error (const char *msgid, ...)
6618 va_start (ap, msgid);
6619 fprintf (stderr, "%s: ", programname);
6620 vfprintf (stderr, _(msgid), ap);
6623 fprintf (stderr, "\n");
6627 notice (const char *msgid, ...)
6631 va_start (ap, msgid);
6632 vfprintf (stderr, _(msgid), ap);
6637 validate_switches_from_spec (spec)
6640 const char *p = spec;
6643 if (c == '%' && (*p == '{' || *p == '<' || (*p == 'W' && *++p == '{')))
6644 /* We have a switch spec. */
6645 p = validate_switches (p + 1);
6649 validate_all_switches ()
6651 struct compiler *comp;
6652 struct spec_list *spec;
6654 for (comp = compilers; comp->spec; comp++)
6655 validate_switches_from_spec (comp->spec);
6657 /* Look through the linked list of specs read from the specs file. */
6658 for (spec = specs; spec; spec = spec->next)
6659 validate_switches_from_spec (*spec->ptr_spec);
6661 validate_switches_from_spec (link_command_spec);
6664 /* Look at the switch-name that comes after START
6665 and mark as valid all supplied switches that match it. */
6668 validate_switches (start)
6671 const char *p = start;
6675 bool suffix = false;
6676 bool starred = false;
6678 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
6691 while (ISIDNUM (*p) || *p == '-' || *p == '+' || *p == '='
6692 || *p == ',' || *p == '.' || *p == '@')
6697 starred = true, p++;
6703 /* Mark all matching switches as valid. */
6704 for (i = 0; i < n_switches; i++)
6705 if (!strncmp (switches[i].part1, atom, len)
6706 && (starred || switches[i].part1[len] == 0))
6707 switches[i].validated = 1;
6711 if (*p && (p[-1] == '|' || p[-1] == '&'))
6714 if (*p && p[-1] == ':')
6716 while (*p && *p != ';' && *p != '}')
6721 if (*p == '{' || *p == '<')
6722 p = validate_switches (p+1);
6723 else if (p[0] == 'W' && p[1] == '{')
6724 p = validate_switches (p+2);
6731 if (*p && p[-1] == ';')
6745 static struct mdswitchstr *mdswitches;
6746 static int n_mdswitches;
6748 /* Check whether a particular argument was used. The first time we
6749 canonicalize the switches to keep only the ones we care about. */
6759 const char *replace;
6764 static struct mswitchstr *mswitches;
6765 static int n_mswitches;
6770 struct mswitchstr *matches;
6774 /* Break multilib_matches into the component strings of string
6775 and replacement string. */
6776 for (q = multilib_matches; *q != '\0'; q++)
6781 (struct mswitchstr *) alloca ((sizeof (struct mswitchstr)) * cnt);
6783 q = multilib_matches;
6793 matches[i].len = q - matches[i].str;
6795 matches[i].replace = ++q;
6796 while (*q != ';' && *q != '\0')
6802 matches[i].rep_len = q - matches[i].replace;
6808 /* Now build a list of the replacement string for switches that we care
6809 about. Make sure we allocate at least one entry. This prevents
6810 xmalloc from calling fatal, and prevents us from re-executing this
6813 = (struct mswitchstr *)
6814 xmalloc (sizeof (struct mswitchstr)
6815 * (n_mdswitches + (n_switches ? n_switches : 1)));
6816 for (i = 0; i < n_switches; i++)
6818 int xlen = strlen (switches[i].part1);
6819 for (j = 0; j < cnt; j++)
6820 if (xlen == matches[j].len
6821 && ! strncmp (switches[i].part1, matches[j].str, xlen))
6823 mswitches[n_mswitches].str = matches[j].replace;
6824 mswitches[n_mswitches].len = matches[j].rep_len;
6825 mswitches[n_mswitches].replace = (char *) 0;
6826 mswitches[n_mswitches].rep_len = 0;
6832 /* Add MULTILIB_DEFAULTS switches too, as long as they were not present
6833 on the command line nor any options mutually incompatible with
6835 for (i = 0; i < n_mdswitches; i++)
6839 for (q = multilib_options; *q != '\0'; q++)
6845 while (strncmp (q, mdswitches[i].str, mdswitches[i].len) != 0
6846 || strchr (" /", q[mdswitches[i].len]) == NULL)
6848 while (*q != ' ' && *q != '/' && *q != '\0')
6855 if (*q != ' ' && *q != '\0')
6857 while (*r != ' ' && *r != '\0')
6860 while (*q != ' ' && *q != '/' && *q != '\0')
6863 if (used_arg (r, q - r))
6868 mswitches[n_mswitches].str = mdswitches[i].str;
6869 mswitches[n_mswitches].len = mdswitches[i].len;
6870 mswitches[n_mswitches].replace = (char *) 0;
6871 mswitches[n_mswitches].rep_len = 0;
6884 for (i = 0; i < n_mswitches; i++)
6885 if (len == mswitches[i].len && ! strncmp (p, mswitches[i].str, len))
6892 default_arg (p, len)
6898 for (i = 0; i < n_mdswitches; i++)
6899 if (len == mdswitches[i].len && ! strncmp (p, mdswitches[i].str, len))
6905 /* Work out the subdirectory to use based on the options. The format of
6906 multilib_select is a list of elements. Each element is a subdirectory
6907 name followed by a list of options followed by a semicolon. The format
6908 of multilib_exclusions is the same, but without the preceding
6909 directory. First gcc will check the exclusions, if none of the options
6910 beginning with an exclamation point are present, and all of the other
6911 options are present, then we will ignore this completely. Passing
6912 that, gcc will consider each multilib_select in turn using the same
6913 rules for matching the options. If a match is found, that subdirectory
6920 unsigned int this_path_len;
6921 const char *this_path, *this_arg;
6922 const char *start, *end;
6924 int ok, ndfltok, first;
6927 start = multilib_defaults;
6928 while (*start == ' ' || *start == '\t')
6930 while (*start != '\0')
6933 while (*start != ' ' && *start != '\t' && *start != '\0')
6935 while (*start == ' ' || *start == '\t')
6944 = (struct mdswitchstr *) xmalloc (sizeof (struct mdswitchstr)
6946 for (start = multilib_defaults; *start != '\0'; start = end + 1)
6948 while (*start == ' ' || *start == '\t')
6954 for (end = start + 1;
6955 *end != ' ' && *end != '\t' && *end != '\0'; end++)
6958 obstack_grow (&multilib_obstack, start, end - start);
6959 obstack_1grow (&multilib_obstack, 0);
6960 mdswitches[i].str = obstack_finish (&multilib_obstack);
6961 mdswitches[i++].len = end - start;
6968 p = multilib_exclusions;
6971 /* Ignore newlines. */
6978 /* Check the arguments. */
6992 while (*p != ' ' && *p != ';')
6999 if (*this_arg != '!')
7007 ok = used_arg (this_arg, p - this_arg);
7022 p = multilib_select;
7025 /* Ignore newlines. */
7032 /* Get the initial path. */
7040 this_path_len = p - this_path;
7042 /* Check the arguments. */
7058 while (*p != ' ' && *p != ';')
7065 if (*this_arg != '!')
7073 /* If this is a default argument, we can just ignore it.
7074 This is true even if this_arg begins with '!'. Beginning
7075 with '!' does not mean that this argument is necessarily
7076 inappropriate for this library: it merely means that
7077 there is a more specific library which uses this
7078 argument. If this argument is a default, we need not
7079 consider that more specific library. */
7080 ok = used_arg (this_arg, p - this_arg);
7087 if (default_arg (this_arg, p - this_arg))
7096 if (this_path_len != 1
7097 || this_path[0] != '.')
7099 char *new_multilib_dir = xmalloc (this_path_len + 1);
7102 strncpy (new_multilib_dir, this_path, this_path_len);
7103 new_multilib_dir[this_path_len] = '\0';
7104 q = strchr (new_multilib_dir, ':');
7107 multilib_dir = new_multilib_dir;
7114 const char *q = this_path, *end = this_path + this_path_len;
7116 while (q < end && *q != ':')
7120 char *new_multilib_os_dir = xmalloc (end - q);
7121 memcpy (new_multilib_os_dir, q + 1, end - q - 1);
7122 new_multilib_os_dir[end - q - 1] = '\0';
7123 multilib_os_dir = new_multilib_os_dir;
7131 if (multilib_dir == NULL && multilib_os_dir != NULL
7132 && strcmp (multilib_os_dir, ".") == 0)
7134 free ((char *) multilib_os_dir);
7135 multilib_os_dir = NULL;
7137 else if (multilib_dir != NULL && multilib_os_dir == NULL)
7138 multilib_os_dir = multilib_dir;
7141 /* Print out the multiple library subdirectory selection
7142 information. This prints out a series of lines. Each line looks
7143 like SUBDIRECTORY;@OPTION@OPTION, with as many options as is
7144 required. Only the desired options are printed out, the negative
7145 matches. The options are print without a leading dash. There are
7146 no spaces to make it easy to use the information in the shell.
7147 Each subdirectory is printed only once. This assumes the ordering
7148 generated by the genmultilib script. Also, we leave out ones that match
7152 print_multilib_info ()
7154 const char *p = multilib_select;
7155 const char *last_path = 0, *this_path;
7157 unsigned int last_path_len = 0;
7162 /* Ignore newlines. */
7169 /* Get the initial path. */
7178 /* When --disable-multilib was used but target defines
7179 MULTILIB_OSDIRNAMES, entries starting with .: are there just
7180 to find multilib_os_dir, so skip them from output. */
7181 if (this_path[0] == '.' && this_path[1] == ':')
7184 /* Check for matches with the multilib_exclusions. We don't bother
7185 with the '!' in either list. If any of the exclusion rules match
7186 all of its options with the select rule, we skip it. */
7188 const char *e = multilib_exclusions;
7189 const char *this_arg;
7194 /* Ignore newlines. */
7201 /* Check the arguments. */
7218 while (*e != ' ' && *e != ';')
7229 int len = e - this_arg;
7236 while (*q != ' ' && *q != ';')
7243 if (! strncmp (arg, this_arg, (len < q - arg) ? q - arg : len) ||
7244 default_arg (this_arg, e - this_arg))
7274 /* If this is a duplicate, skip it. */
7275 skip = (last_path != 0 && (unsigned int) (p - this_path) == last_path_len
7276 && ! strncmp (last_path, this_path, last_path_len));
7278 last_path = this_path;
7279 last_path_len = p - this_path;
7282 /* If this directory requires any default arguments, we can skip
7283 it. We will already have printed a directory identical to
7284 this one which does not require that default argument. */
7302 while (*q != ' ' && *q != ';')
7310 && default_arg (arg, q - arg))
7325 for (p1 = last_path; p1 < p && *p1 != ':'; p1++)
7344 use_arg = *p != '!';
7349 while (*p != ' ' && *p != ';')
7364 /* If there are extra options, print them now. */
7365 if (multilib_extra && *multilib_extra)
7367 int print_at = TRUE;
7370 for (q = multilib_extra; *q != '\0'; q++)
7391 /* if-exists built-in spec function.
7393 Checks to see if the file specified by the absolute pathname in
7394 ARGS exists. Returns that pathname if found.
7396 The usual use for this function is to check for a library file
7397 (whose name has been expanded with %s). */
7400 if_exists_spec_function (argc, argv)
7404 /* Must have only one argument. */
7405 if (argc == 1 && IS_ABSOLUTE_PATHNAME (argv[0]) && ! access (argv[0], R_OK))
7411 /* if-exists-else built-in spec function.
7413 This is like if-exists, but takes an additional argument which
7414 is returned if the first argument does not exist. */
7417 if_exists_else_spec_function (argc, argv)
7421 /* Must have exactly two arguments. */
7425 if (IS_ABSOLUTE_PATHNAME (argv[0]) && ! access (argv[0], R_OK))