1 /* Compiler driver program that can handle many languages.
2 Copyright (C) 1987, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
3 1999, 2000, 2001, 2002, 2003, 2004 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"
76 #include "multilib.h" /* before tm.h */
79 #if ! defined( SIGCHLD ) && defined( SIGCLD )
80 # define SIGCHLD SIGCLD
88 #ifdef HAVE_SYS_RESOURCE_H
89 #include <sys/resource.h>
91 #if defined (HAVE_DECL_GETRUSAGE) && !HAVE_DECL_GETRUSAGE
92 extern int getrusage (int, struct rusage *);
95 /* By default there is no special suffix for target executables. */
96 /* FIXME: when autoconf is fixed, remove the host check - dj */
97 #if defined(TARGET_EXECUTABLE_SUFFIX) && defined(HOST_EXECUTABLE_SUFFIX)
98 #define HAVE_TARGET_EXECUTABLE_SUFFIX
101 /* By default there is no special suffix for host executables. */
102 #ifdef HOST_EXECUTABLE_SUFFIX
103 #define HAVE_HOST_EXECUTABLE_SUFFIX
105 #define HOST_EXECUTABLE_SUFFIX ""
108 /* By default, the suffix for target object files is ".o". */
109 #ifdef TARGET_OBJECT_SUFFIX
110 #define HAVE_TARGET_OBJECT_SUFFIX
112 #define TARGET_OBJECT_SUFFIX ".o"
115 static const char dir_separator_str[] = { DIR_SEPARATOR, 0 };
117 /* Most every one is fine with LIBRARY_PATH. For some, it conflicts. */
118 #ifndef LIBRARY_PATH_ENV
119 #define LIBRARY_PATH_ENV "LIBRARY_PATH"
123 #define kill(p,s) raise(s)
126 /* If a stage of compilation returns an exit status >= 1,
127 compilation of that file ceases. */
129 #define MIN_FATAL_STATUS 1
131 /* Flag set by cppspec.c to 1. */
134 /* Flag saying to pass the greatest exit code returned by a sub-process
135 to the calling program. */
136 static int pass_exit_codes;
138 /* Definition of string containing the arguments given to configure. */
139 #include "configargs.h"
141 /* Flag saying to print the directories gcc will search through looking for
142 programs, libraries, etc. */
144 static int print_search_dirs;
146 /* Flag saying to print the full filename of this file
147 as found through our usual search mechanism. */
149 static const char *print_file_name = NULL;
151 /* As print_file_name, but search for executable file. */
153 static const char *print_prog_name = NULL;
155 /* Flag saying to print the relative path we'd use to
156 find libgcc.a given the current compiler flags. */
158 static int print_multi_directory;
160 /* Flag saying to print the relative path we'd use to
161 find OS libraries given the current compiler flags. */
163 static int print_multi_os_directory;
165 /* Flag saying to print the list of subdirectories and
166 compiler flags used to select them in a standard form. */
168 static int print_multi_lib;
170 /* Flag saying to print the command line options understood by gcc and its
173 static int print_help_list;
175 /* Flag indicating whether we should print the command and arguments */
177 static int verbose_flag;
179 /* Flag indicating whether we should ONLY print the command and
180 arguments (like verbose_flag) without executing the command.
181 Displayed arguments are quoted so that the generated command
182 line is suitable for execution. This is intended for use in
183 shell scripts to capture the driver-generated command line. */
184 static int verbose_only_flag;
186 /* Flag indicating to print target specific command line options. */
188 static int target_help_flag;
190 /* Flag indicating whether we should report subprocess execution times
191 (if this is supported by the system - see pexecute.c). */
193 static int report_times;
195 /* Nonzero means place this string before uses of /, so that include
196 and library files can be found in an alternate location. */
198 #ifdef TARGET_SYSTEM_ROOT
199 static const char *target_system_root = TARGET_SYSTEM_ROOT;
201 static const char *target_system_root = 0;
204 /* Nonzero means pass the updated target_system_root to the compiler. */
206 static int target_system_root_changed;
208 /* Nonzero means append this string to target_system_root. */
210 static const char *target_sysroot_suffix = 0;
212 /* Nonzero means append this string to target_system_root for headers. */
214 static const char *target_sysroot_hdrs_suffix = 0;
216 /* Nonzero means write "temp" files in source directory
217 and use the source file's name in them, and don't delete them. */
219 static int save_temps_flag;
221 /* Nonzero means use pipes to communicate between subprocesses.
222 Overridden by either of the above two flags. */
224 static int use_pipes;
226 /* The compiler version. */
228 static const char *compiler_version;
230 /* The target version specified with -V */
232 static const char *const spec_version = DEFAULT_TARGET_VERSION;
234 /* The target machine specified with -b. */
236 static const char *spec_machine = DEFAULT_TARGET_MACHINE;
238 /* Nonzero if cross-compiling.
239 When -b is used, the value comes from the `specs' file. */
242 static const char *cross_compile = "1";
244 static const char *cross_compile = "0";
247 #ifdef MODIFY_TARGET_NAME
249 /* Information on how to alter the target name based on a command-line
250 switch. The only case we support now is simply appending or deleting a
251 string to or from the end of the first part of the configuration name. */
253 static const struct modify_target
255 const char *const sw;
256 const enum add_del {ADD, DELETE} add_del;
257 const char *const str;
259 modify_target[] = MODIFY_TARGET_NAME;
262 /* The number of errors that have occurred; the link phase will not be
263 run if this is nonzero. */
264 static int error_count = 0;
266 /* Greatest exit code of sub-processes that has been encountered up to
268 static int greatest_status = 1;
270 /* This is the obstack which we use to allocate many strings. */
272 static struct obstack obstack;
274 /* This is the obstack to build an environment variable to pass to
275 collect2 that describes all of the relevant switches of what to
276 pass the compiler in building the list of pointers to constructors
279 static struct obstack collect_obstack;
281 /* These structs are used to collect resource usage information for
283 #ifdef HAVE_GETRUSAGE
284 static struct rusage rus, prus;
287 /* Forward declaration for prototypes. */
290 static void init_spec (void);
291 static void store_arg (const char *, int, int);
292 static char *load_specs (const char *);
293 static void read_specs (const char *, int);
294 static void set_spec (const char *, const char *);
295 static struct compiler *lookup_compiler (const char *, size_t, const char *);
296 static char *build_search_list (struct path_prefix *, const char *, int);
297 static void putenv_from_prefixes (struct path_prefix *, const char *);
298 static int access_check (const char *, int);
299 static char *find_a_file (struct path_prefix *, const char *, int, int);
300 static void add_prefix (struct path_prefix *, const char *, const char *,
301 int, int, int *, int);
302 static void add_sysrooted_prefix (struct path_prefix *, const char *,
303 const char *, int, int, int *, int);
304 static void translate_options (int *, const char *const **);
305 static char *skip_whitespace (char *);
306 static void delete_if_ordinary (const char *);
307 static void delete_temp_files (void);
308 static void delete_failure_queue (void);
309 static void clear_failure_queue (void);
310 static int check_live_switch (int, int);
311 static const char *handle_braces (const char *);
312 static inline bool input_suffix_matches (const char *, const char *);
313 static inline bool switch_matches (const char *, const char *, int);
314 static inline void mark_matching_switches (const char *, const char *, int);
315 static inline void process_marked_switches (void);
316 static const char *process_brace_body (const char *, const char *, const char *, int, int);
317 static const struct spec_function *lookup_spec_function (const char *);
318 static const char *eval_spec_function (const char *, const char *);
319 static const char *handle_spec_function (const char *);
320 static char *save_string (const char *, int);
321 static void set_collect_gcc_options (void);
322 static int do_spec_1 (const char *, int, const char *);
323 static int do_spec_2 (const char *);
324 static void do_option_spec (const char *, const char *);
325 static void do_self_spec (const char *);
326 static const char *find_file (const char *);
327 static int is_directory (const char *, const char *, int);
328 static const char *validate_switches (const char *);
329 static void validate_all_switches (void);
330 static inline void validate_switches_from_spec (const char *);
331 static void give_switch (int, int);
332 static int used_arg (const char *, int);
333 static int default_arg (const char *, int);
334 static void set_multilib_dir (void);
335 static void print_multilib_info (void);
336 static void perror_with_name (const char *);
337 static void pfatal_pexecute (const char *, const char *) ATTRIBUTE_NORETURN;
338 static void notice (const char *, ...) ATTRIBUTE_PRINTF_1;
339 static void display_help (void);
340 static void add_preprocessor_option (const char *, int);
341 static void add_assembler_option (const char *, int);
342 static void add_linker_option (const char *, int);
343 static void process_command (int, const char **);
344 static int execute (void);
345 static void alloc_args (void);
346 static void clear_args (void);
347 static void fatal_error (int);
348 #ifdef ENABLE_SHARED_LIBGCC
349 static void init_gcc_specs (struct obstack *, const char *, const char *,
352 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
353 static const char *convert_filename (const char *, int, int);
356 static const char *if_exists_spec_function (int, const char **);
357 static const char *if_exists_else_spec_function (int, const char **);
359 /* The Specs Language
361 Specs are strings containing lines, each of which (if not blank)
362 is made up of a program name, and arguments separated by spaces.
363 The program name must be exact and start from root, since no path
364 is searched and it is unreliable to depend on the current working directory.
365 Redirection of input or output is not supported; the subprograms must
366 accept filenames saying what files to read and write.
368 In addition, the specs can contain %-sequences to substitute variable text
369 or for conditional text. Here is a table of all defined %-sequences.
370 Note that spaces are not generated automatically around the results of
371 expanding these sequences; therefore, you can concatenate them together
372 or with constant text in a single argument.
374 %% substitute one % into the program name or argument.
375 %i substitute the name of the input file being processed.
376 %b substitute the basename of the input file being processed.
377 This is the substring up to (and not including) the last period
378 and not including the directory.
379 %B same as %b, but include the file suffix (text after the last period).
381 substitute a file name that has suffix SUFFIX and is chosen
382 once per compilation, and mark the argument a la %d. To reduce
383 exposure to denial-of-service attacks, the file name is now
384 chosen in a way that is hard to predict even when previously
385 chosen file names are known. For example, `%g.s ... %g.o ... %g.s'
386 might turn into `ccUVUUAU.s ccXYAXZ12.o ccUVUUAU.s'. SUFFIX matches
387 the regexp "[.A-Za-z]*%O"; "%O" is treated exactly as if it
388 had been pre-processed. Previously, %g was simply substituted
389 with a file name chosen once per compilation, without regard
390 to any appended suffix (which was therefore treated just like
391 ordinary text), making such attacks more likely to succeed.
393 like %g, but if -pipe is in effect, expands simply to "-".
395 like %g, but if -pipe is in effect, expands to nothing. (We have both
396 %| and %m to accommodate differences between system assemblers; see
397 the AS_NEEDS_DASH_FOR_PIPED_INPUT target macro.)
399 like %g, but generates a new temporary file name even if %uSUFFIX
402 substitutes the last file name generated with %uSUFFIX, generating a
403 new one if there is no such last file name. In the absence of any
404 %uSUFFIX, this is just like %gSUFFIX, except they don't share
405 the same suffix "space", so `%g.s ... %U.s ... %g.s ... %U.s'
406 would involve the generation of two distinct file names, one
407 for each `%g.s' and another for each `%U.s'. Previously, %U was
408 simply substituted with a file name chosen for the previous %u,
409 without regard to any appended suffix.
411 substitutes the name of the HOST_BIT_BUCKET, if any, and if it is
412 writable, and if save-temps is off; otherwise, substitute the name
413 of a temporary file, just like %u. This temporary file is not
414 meant for communication between processes, but rather as a junk
417 substitutes .SUFFIX for the suffixes of a matched switch's args when
418 it is subsequently output with %*. SUFFIX is terminated by the next
420 %d marks the argument containing or following the %d as a
421 temporary file name, so that that file will be deleted if CC exits
422 successfully. Unlike %g, this contributes no text to the argument.
423 %w marks the argument containing or following the %w as the
424 "output file" of this compilation. This puts the argument
425 into the sequence of arguments that %o will substitute later.
426 %V indicates that this compilation produces no "output file".
428 like %{...} but mark last argument supplied within
429 as a file to be deleted on failure.
430 %o substitutes the names of all the output files, with spaces
431 automatically placed around them. You should write spaces
432 around the %o as well or the results are undefined.
433 %o is for use in the specs for running the linker.
434 Input files whose names have no recognized suffix are not compiled
435 at all, but they are included among the output files, so they will
437 %O substitutes the suffix for object files. Note that this is
438 handled specially when it immediately follows %g, %u, or %U
439 (with or without a suffix argument) because of the need for
440 those to form complete file names. The handling is such that
441 %O is treated exactly as if it had already been substituted,
442 except that %g, %u, and %U do not currently support additional
443 SUFFIX characters following %O as they would following, for
445 %I Substitute any of -iprefix (made from GCC_EXEC_PREFIX), -isysroot
446 (made from TARGET_SYSTEM_ROOT), and -isystem (made from COMPILER_PATH
447 and -B options) as necessary.
448 %s current argument is the name of a library or startup file of some sort.
449 Search for that file in a standard list of directories
450 and substitute the full name found.
451 %eSTR Print STR as an error message. STR is terminated by a newline.
452 Use this when inconsistent options are detected.
453 %nSTR Print STR as a notice. STR is terminated by a newline.
454 %x{OPTION} Accumulate an option for %X.
455 %X Output the accumulated linker options specified by compilations.
456 %Y Output the accumulated assembler options specified by compilations.
457 %Z Output the accumulated preprocessor options specified by compilations.
458 %a process ASM_SPEC as a spec.
459 This allows config.h to specify part of the spec for running as.
460 %A process ASM_FINAL_SPEC as a spec. A capital A is actually
461 used here. This can be used to run a post-processor after the
462 assembler has done its job.
463 %D Dump out a -L option for each directory in startfile_prefixes.
464 If multilib_dir is set, extra entries are generated with it affixed.
465 %l process LINK_SPEC as a spec.
466 %L process LIB_SPEC as a spec.
467 %G process LIBGCC_SPEC as a spec.
468 %M output multilib_dir with directory separators replaced with "_";
469 if multilib_dir is not set or is ".", output "".
470 %S process STARTFILE_SPEC as a spec. A capital S is actually used here.
471 %E process ENDFILE_SPEC as a spec. A capital E is actually used here.
472 %C process CPP_SPEC as a spec.
473 %1 process CC1_SPEC as a spec.
474 %2 process CC1PLUS_SPEC as a spec.
475 %* substitute the variable part of a matched option. (See below.)
476 Note that each comma in the substituted string is replaced by
478 %<S remove all occurrences of -S from the command line.
479 Note - this command is position dependent. % commands in the
480 spec string before this one will see -S, % commands in the
481 spec string after this one will not.
482 %<S* remove all occurrences of all switches beginning with -S from the
485 Call the named function FUNCTION, passing it ARGS. ARGS is
486 first processed as a nested spec string, then split into an
487 argument vector in the usual fashion. The function returns
488 a string which is processed as if it had appeared literally
489 as part of the current spec.
490 %{S} substitutes the -S switch, if that switch was given to CC.
491 If that switch was not specified, this substitutes nothing.
492 Here S is a metasyntactic variable.
493 %{S*} substitutes all the switches specified to CC whose names start
494 with -S. This is used for -o, -I, etc; switches that take
495 arguments. CC considers `-o foo' as being one switch whose
496 name starts with `o'. %{o*} would substitute this text,
497 including the space; thus, two arguments would be generated.
498 %{S*&T*} likewise, but preserve order of S and T options (the order
499 of S and T in the spec is not significant). Can be any number
500 of ampersand-separated variables; for each the wild card is
501 optional. Useful for CPP as %{D*&U*&A*}.
503 %{S:X} substitutes X, if the -S switch was given to CC.
504 %{!S:X} substitutes X, if the -S switch was NOT given to CC.
505 %{S*:X} substitutes X if one or more switches whose names start
506 with -S was given to CC. Normally X is substituted only
507 once, no matter how many such switches appeared. However,
508 if %* appears somewhere in X, then X will be substituted
509 once for each matching switch, with the %* replaced by the
510 part of that switch that matched the '*'.
511 %{.S:X} substitutes X, if processing a file with suffix S.
512 %{!.S:X} substitutes X, if NOT processing a file with suffix S.
514 %{S|T:X} substitutes X if either -S or -T was given to CC. This may be
515 combined with !, ., and * as above binding stronger than the OR.
516 If %* appears in X, all of the alternatives must be starred, and
517 only the first matching alternative is substituted.
518 %{S:X; if S was given to CC, substitutes X;
519 T:Y; else if T was given to CC, substitutes Y;
520 :D} else substitutes D. There can be as many clauses as you need.
521 This may be combined with ., !, |, and * as above.
523 %(Spec) processes a specification defined in a specs file as *Spec:
524 %[Spec] as above, but put __ around -D arguments
526 The conditional text X in a %{S:X} or similar construct may contain
527 other nested % constructs or spaces, or even newlines. They are
528 processed as usual, as described above. Trailing white space in X is
529 ignored. White space may also appear anywhere on the left side of the
530 colon in these constructs, except between . or * and the corresponding
533 The -O, -f, -m, and -W switches are handled specifically in these
534 constructs. If another value of -O or the negated form of a -f, -m, or
535 -W switch is found later in the command line, the earlier switch
536 value is ignored, except with {S*} where S is just one letter; this
537 passes all matching options.
539 The character | at the beginning of the predicate text is used to indicate
540 that a command should be piped to the following command, but only if -pipe
543 Note that it is built into CC which switches take arguments and which
544 do not. You might think it would be useful to generalize this to
545 allow each compiler's spec to say which switches take arguments. But
546 this cannot be done in a consistent fashion. CC cannot even decide
547 which input files have been specified without knowing which switches
548 take arguments, and it must know which input files to compile in order
549 to tell which compilers to run.
551 CC also knows implicitly that arguments starting in `-l' are to be
552 treated as compiler output files, and passed to the linker in their
553 proper position among the other output files. */
555 /* Define the macros used for specs %a, %l, %L, %S, %C, %1. */
557 /* config.h can define ASM_SPEC to provide extra args to the assembler
558 or extra switch-translations. */
563 /* config.h can define ASM_FINAL_SPEC to run a post processor after
564 the assembler has run. */
565 #ifndef ASM_FINAL_SPEC
566 #define ASM_FINAL_SPEC ""
569 /* config.h can define CPP_SPEC to provide extra args to the C preprocessor
570 or extra switch-translations. */
575 /* config.h can define CC1_SPEC to provide extra args to cc1 and cc1plus
576 or extra switch-translations. */
581 /* config.h can define CC1PLUS_SPEC to provide extra args to cc1plus
582 or extra switch-translations. */
584 #define CC1PLUS_SPEC ""
587 /* config.h can define LINK_SPEC to provide extra args to the linker
588 or extra switch-translations. */
593 /* config.h can define LIB_SPEC to override the default libraries. */
595 #define LIB_SPEC "%{!shared:%{g*:-lg} %{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p}}"
598 /* config.h can define LIBGCC_SPEC to override how and when libgcc.a is
601 #if defined(LINK_LIBGCC_SPECIAL) || defined(LINK_LIBGCC_SPECIAL_1)
602 /* Have gcc do the search for libgcc.a. */
603 #define LIBGCC_SPEC "libgcc.a%s"
605 #define LIBGCC_SPEC "-lgcc"
609 /* config.h can define STARTFILE_SPEC to override the default crt0 files. */
610 #ifndef STARTFILE_SPEC
611 #define STARTFILE_SPEC \
612 "%{!shared:%{pg:gcrt0%O%s}%{!pg:%{p:mcrt0%O%s}%{!p:crt0%O%s}}}"
615 /* config.h can define SWITCHES_NEED_SPACES to control which options
616 require spaces between the option and the argument. */
617 #ifndef SWITCHES_NEED_SPACES
618 #define SWITCHES_NEED_SPACES ""
621 /* config.h can define ENDFILE_SPEC to override the default crtn files. */
623 #define ENDFILE_SPEC ""
627 #define LINKER_NAME "collect2"
630 /* Define ASM_DEBUG_SPEC to be a spec suitable for translating '-g'
632 #ifndef ASM_DEBUG_SPEC
633 # if defined(DBX_DEBUGGING_INFO) && defined(DWARF2_DEBUGGING_INFO) \
634 && defined(HAVE_AS_GDWARF2_DEBUG_FLAG) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
635 # define ASM_DEBUG_SPEC \
636 (PREFERRED_DEBUGGING_TYPE == DBX_DEBUG \
637 ? "%{gdwarf-2*:--gdwarf2}%{!gdwarf-2*:%{g*:--gstabs}}" \
638 : "%{gstabs*:--gstabs}%{!gstabs*:%{g*:--gdwarf2}}")
640 # if defined(DBX_DEBUGGING_INFO) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
641 # define ASM_DEBUG_SPEC "%{g*:--gstabs}"
643 # if defined(DWARF2_DEBUGGING_INFO) && defined(HAVE_AS_GDWARF2_DEBUG_FLAG)
644 # define ASM_DEBUG_SPEC "%{g*:--gdwarf2}"
648 #ifndef ASM_DEBUG_SPEC
649 # define ASM_DEBUG_SPEC ""
652 /* Here is the spec for running the linker, after compiling all files. */
654 /* This is overridable by the target in case they need to specify the
655 -lgcc and -lc order specially, yet not require them to override all
656 of LINK_COMMAND_SPEC. */
657 #ifndef LINK_GCC_C_SEQUENCE_SPEC
658 #define LINK_GCC_C_SEQUENCE_SPEC "%G %L %G"
661 #ifndef LINK_PIE_SPEC
663 #define LINK_PIE_SPEC "%{pie:-pie} "
665 #define LINK_PIE_SPEC "%{pie:} "
669 /* -u* was put back because both BSD and SysV seem to support it. */
670 /* %{static:} simply prevents an error message if the target machine
671 doesn't handle -static. */
672 /* We want %{T*} after %{L*} and %D so that it can be used to specify linker
673 scripts which exist in user specified directories, or in standard
675 #ifndef LINK_COMMAND_SPEC
676 #define LINK_COMMAND_SPEC "\
677 %{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:\
678 %(linker) %l " LINK_PIE_SPEC "%X %{o*} %{A} %{d} %{e*} %{m} %{N} %{n} %{r}\
679 %{s} %{t} %{u*} %{x} %{z} %{Z} %{!A:%{!nostdlib:%{!nostartfiles:%S}}}\
680 %{static:} %{L*} %(link_libgcc) %o %{fprofile-arcs|fprofile-generate:-lgcov}\
681 %{!nostdlib:%{!nodefaultlibs:%(link_gcc_c_sequence)}}\
682 %{!A:%{!nostdlib:%{!nostartfiles:%E}}} %{T*} }}}}}}"
685 #ifndef LINK_LIBGCC_SPEC
686 # ifdef LINK_LIBGCC_SPECIAL
687 /* Don't generate -L options for startfile prefix list. */
688 # define LINK_LIBGCC_SPEC ""
690 /* Do generate them. */
691 # define LINK_LIBGCC_SPEC "%D"
695 #ifndef STARTFILE_PREFIX_SPEC
696 # define STARTFILE_PREFIX_SPEC ""
699 #ifndef SYSROOT_SUFFIX_SPEC
700 # define SYSROOT_SUFFIX_SPEC ""
703 #ifndef SYSROOT_HEADERS_SUFFIX_SPEC
704 # define SYSROOT_HEADERS_SUFFIX_SPEC ""
707 static const char *asm_debug;
708 static const char *cpp_spec = CPP_SPEC;
709 static const char *cc1_spec = CC1_SPEC;
710 static const char *cc1plus_spec = CC1PLUS_SPEC;
711 static const char *link_gcc_c_sequence_spec = LINK_GCC_C_SEQUENCE_SPEC;
712 static const char *asm_spec = ASM_SPEC;
713 static const char *asm_final_spec = ASM_FINAL_SPEC;
714 static const char *link_spec = LINK_SPEC;
715 static const char *lib_spec = LIB_SPEC;
716 static const char *libgcc_spec = LIBGCC_SPEC;
717 static const char *endfile_spec = ENDFILE_SPEC;
718 static const char *startfile_spec = STARTFILE_SPEC;
719 static const char *switches_need_spaces = SWITCHES_NEED_SPACES;
720 static const char *linker_name_spec = LINKER_NAME;
721 static const char *link_command_spec = LINK_COMMAND_SPEC;
722 static const char *link_libgcc_spec = LINK_LIBGCC_SPEC;
723 static const char *startfile_prefix_spec = STARTFILE_PREFIX_SPEC;
724 static const char *sysroot_suffix_spec = SYSROOT_SUFFIX_SPEC;
725 static const char *sysroot_hdrs_suffix_spec = SYSROOT_HEADERS_SUFFIX_SPEC;
727 /* Standard options to cpp, cc1, and as, to reduce duplication in specs.
728 There should be no need to override these in target dependent files,
729 but we need to copy them to the specs file so that newer versions
730 of the GCC driver can correctly drive older tool chains with the
731 appropriate -B options. */
733 /* When cpplib handles traditional preprocessing, get rid of this, and
734 call cc1 (or cc1obj in objc/lang-specs.h) from the main specs so
735 that we default the front end language better. */
736 static const char *trad_capable_cpp =
737 "cc1 -E %{traditional|ftraditional|traditional-cpp:-traditional-cpp}";
739 /* We don't wrap .d files in %W{} since a missing .d file, and
740 therefore no dependency entry, confuses make into thinking a .o
741 file that happens to exist is up-to-date. */
742 static const char *cpp_unique_options =
743 "%{C|CC:%{!E:%eGCC does not support -C or -CC without -E}}\
744 %{!Q:-quiet} %{nostdinc*} %{C} %{CC} %{v} %{I*} %{P} %I\
745 %{MD:-MD %{!o:%b.d}%{o*:%.d%*}}\
746 %{MMD:-MMD %{!o:%b.d}%{o*:%.d%*}}\
747 %{M} %{MM} %{MF*} %{MG} %{MP} %{MQ*} %{MT*}\
748 %{!E:%{!M:%{!MM:%{MD|MMD:%{o*:-MQ %*}}}}}\
749 %{trigraphs} %{remap} %{g3:-dD} %{H} %C %{D*&U*&A*} %{i*} %Z %i\
752 /* This contains cpp options which are common with cc1_options and are passed
753 only when preprocessing only to avoid duplication. We pass the cc1 spec
754 options to the preprocessor so that it the cc1 spec may manipulate
755 options used to set target flags. Those special target flags settings may
756 in turn cause preprocessor symbols to be defined specially. */
757 static const char *cpp_options =
758 "%(cpp_unique_options) %1 %{m*} %{std*} %{ansi} %{W*&pedantic*} %{w} %{f*}\
759 %{g*:%{!g0:%{!fno-working-directory:-fworking-directory}}} %{O*} %{undef}";
761 /* This contains cpp options which are not passed when the preprocessor
762 output will be used by another program. */
763 static const char *cpp_debug_options = "%{d*}";
765 /* NB: This is shared amongst all front-ends. */
766 static const char *cc1_options =
767 "%{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\
768 %1 %{!Q:-quiet} -dumpbase %B %{d*} %{m*} %{a*}\
769 %{c|S:%{o*:-auxbase-strip %*}%{!o*:-auxbase %b}}%{!c:%{!S:-auxbase %b}}\
770 %{g*} %{O*} %{W*&pedantic*} %{w} %{std*} %{ansi}\
771 %{v:-version} %{pg:-p} %{p} %{f*} %{undef}\
772 %{Qn:-fno-ident} %{--help:--help}\
773 %{--target-help:--target-help}\
774 %{!fsyntax-only:%{S:%W{o*}%{!o*:-o %b.s}}}\
775 %{fsyntax-only:-o %j} %{-param*}";
777 static const char *asm_options =
778 "%a %Y %{c:%W{o*}%{!o*:-o %w%b%O}}%{!c:-o %d%w%u%O}";
780 static const char *invoke_as =
781 #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT
782 "%{!S:-o %|.s |\n as %(asm_options) %|.s %A }";
784 "%{!S:-o %|.s |\n as %(asm_options) %m.s %A }";
787 /* Some compilers have limits on line lengths, and the multilib_select
788 and/or multilib_matches strings can be very long, so we build them at
790 static struct obstack multilib_obstack;
791 static const char *multilib_select;
792 static const char *multilib_matches;
793 static const char *multilib_defaults;
794 static const char *multilib_exclusions;
796 /* Check whether a particular argument is a default argument. */
798 #ifndef MULTILIB_DEFAULTS
799 #define MULTILIB_DEFAULTS { "" }
802 static const char *const multilib_defaults_raw[] = MULTILIB_DEFAULTS;
804 #ifndef DRIVER_SELF_SPECS
805 #define DRIVER_SELF_SPECS ""
808 static const char *const driver_self_specs[] = { DRIVER_SELF_SPECS };
810 #ifndef OPTION_DEFAULT_SPECS
811 #define OPTION_DEFAULT_SPECS { "", "" }
820 static const struct default_spec
821 option_default_specs[] = { OPTION_DEFAULT_SPECS };
825 struct user_specs *next;
826 const char *filename;
829 static struct user_specs *user_specs_head, *user_specs_tail;
831 #ifndef SWITCH_TAKES_ARG
832 #define SWITCH_TAKES_ARG(CHAR) DEFAULT_SWITCH_TAKES_ARG(CHAR)
835 #ifndef WORD_SWITCH_TAKES_ARG
836 #define WORD_SWITCH_TAKES_ARG(STR) DEFAULT_WORD_SWITCH_TAKES_ARG (STR)
839 #ifdef HAVE_TARGET_EXECUTABLE_SUFFIX
840 /* This defines which switches stop a full compilation. */
841 #define DEFAULT_SWITCH_CURTAILS_COMPILATION(CHAR) \
842 ((CHAR) == 'c' || (CHAR) == 'S')
844 #ifndef SWITCH_CURTAILS_COMPILATION
845 #define SWITCH_CURTAILS_COMPILATION(CHAR) \
846 DEFAULT_SWITCH_CURTAILS_COMPILATION(CHAR)
850 /* Record the mapping from file suffixes for compilation specs. */
854 const char *suffix; /* Use this compiler for input files
855 whose names end in this suffix. */
857 const char *spec; /* To use this compiler, run this spec. */
859 const char *cpp_spec; /* If non-NULL, substitute this spec
860 for `%C', rather than the usual
864 /* Pointer to a vector of `struct compiler' that gives the spec for
865 compiling a file, based on its suffix.
866 A file that does not end in any of these suffixes will be passed
867 unchanged to the loader and nothing else will be done to it.
869 An entry containing two 0s is used to terminate the vector.
871 If multiple entries match a file, the last matching one is used. */
873 static struct compiler *compilers;
875 /* Number of entries in `compilers', not counting the null terminator. */
877 static int n_compilers;
879 /* The default list of file name suffixes and their compilation specs. */
881 static const struct compiler default_compilers[] =
883 /* Add lists of suffixes of known languages here. If those languages
884 were not present when we built the driver, we will hit these copies
885 and be given a more meaningful error than "file not used since
886 linking is not done". */
887 {".m", "#Objective-C", 0}, {".mi", "#Objective-C", 0},
888 {".cc", "#C++", 0}, {".cxx", "#C++", 0}, {".cpp", "#C++", 0},
889 {".cp", "#C++", 0}, {".c++", "#C++", 0}, {".C", "#C++", 0},
890 {".CPP", "#C++", 0}, {".ii", "#C++", 0},
891 {".ads", "#Ada", 0}, {".adb", "#Ada", 0},
892 {".f", "#Fortran", 0}, {".for", "#Fortran", 0}, {".fpp", "#Fortran", 0},
893 {".F", "#Fortran", 0}, {".FOR", "#Fortran", 0}, {".FPP", "#Fortran", 0},
894 {".r", "#Ratfor", 0},
895 {".p", "#Pascal", 0}, {".pas", "#Pascal", 0},
896 {".java", "#Java", 0}, {".class", "#Java", 0},
897 {".zip", "#Java", 0}, {".jar", "#Java", 0},
898 /* Next come the entries for C. */
901 /* cc1 has an integrated ISO C preprocessor. We should invoke the
902 external preprocessor if -save-temps is given. */
903 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\
905 %{traditional|ftraditional:\
906 %eGNU C no longer supports -traditional without -E}\
907 %{save-temps|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
908 %(cpp_options) -o %{save-temps:%b.i} %{!save-temps:%g.i} \n\
909 cc1 -fpreprocessed %{save-temps:%b.i} %{!save-temps:%g.i} \
911 %{!save-temps:%{!traditional-cpp:%{!no-integrated-cpp:\
912 cc1 %(cpp_unique_options) %(cc1_options)}}}\
913 %{!fsyntax-only:%(invoke_as)}}}}", 0},
915 "%{!E:%e-E required when input is from standard input}\
916 %(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)", 0},
917 {".h", "@c-header", 0},
919 /* cc1 has an integrated ISO C preprocessor. We should invoke the
920 external preprocessor if -save-temps is given. */
921 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\
923 %{save-temps|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
924 %(cpp_options) -o %{save-temps:%b.i} %{!save-temps:%g.i} \n\
925 cc1 -fpreprocessed %{save-temps:%b.i} %{!save-temps:%g.i} \
927 -o %g.s %{!o*:--output-pch=%i.gch}\
928 %W{o*:--output-pch=%*}%V}\
929 %{!save-temps:%{!traditional-cpp:%{!no-integrated-cpp:\
930 cc1 %(cpp_unique_options) %(cc1_options)\
931 -o %g.s %{!o*:--output-pch=%i.gch}\
932 %W{o*:--output-pch=%*}%V}}}}}}", 0},
933 {".i", "@cpp-output", 0},
935 "%{!M:%{!MM:%{!E:cc1 -fpreprocessed %i %(cc1_options) %{!fsyntax-only:%(invoke_as)}}}}", 0},
936 {".s", "@assembler", 0},
938 "%{!M:%{!MM:%{!E:%{!S:as %(asm_debug) %(asm_options) %i %A }}}}", 0},
939 {".S", "@assembler-with-cpp", 0},
940 {"@assembler-with-cpp",
941 #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT
942 "%(trad_capable_cpp) -lang-asm %(cpp_options)\
943 %{E|M|MM:%(cpp_debug_options)}\
944 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\
945 as %(asm_debug) %(asm_options) %|.s %A }}}}"
947 "%(trad_capable_cpp) -lang-asm %(cpp_options)\
948 %{E|M|MM:%(cpp_debug_options)}\
949 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\
950 as %(asm_debug) %(asm_options) %m.s %A }}}}"
955 /* Mark end of table. */
959 /* Number of elements in default_compilers, not counting the terminator. */
961 static const int n_default_compilers = ARRAY_SIZE (default_compilers) - 1;
963 /* A vector of options to give to the linker.
964 These options are accumulated by %x,
965 and substituted into the linker command with %X. */
966 static int n_linker_options;
967 static char **linker_options;
969 /* A vector of options to give to the assembler.
970 These options are accumulated by -Wa,
971 and substituted into the assembler command with %Y. */
972 static int n_assembler_options;
973 static char **assembler_options;
975 /* A vector of options to give to the preprocessor.
976 These options are accumulated by -Wp,
977 and substituted into the preprocessor command with %Z. */
978 static int n_preprocessor_options;
979 static char **preprocessor_options;
981 /* Define how to map long options into short ones. */
983 /* This structure describes one mapping. */
986 /* The long option's name. */
987 const char *const name;
988 /* The equivalent short option. */
989 const char *const equivalent;
990 /* Argument info. A string of flag chars; NULL equals no options.
991 a => argument required.
992 o => argument optional.
993 j => join argument to equivalent, making one word.
994 * => require other text after NAME as an argument. */
995 const char *const arg_info;
998 /* This is the table of mappings. Mappings are tried sequentially
999 for each option encountered; the first one that matches, wins. */
1001 static const struct option_map option_map[] =
1003 {"--all-warnings", "-Wall", 0},
1004 {"--ansi", "-ansi", 0},
1005 {"--assemble", "-S", 0},
1006 {"--assert", "-A", "a"},
1007 {"--classpath", "-fclasspath=", "aj"},
1008 {"--bootclasspath", "-fbootclasspath=", "aj"},
1009 {"--CLASSPATH", "-fclasspath=", "aj"},
1010 {"--comments", "-C", 0},
1011 {"--comments-in-macros", "-CC", 0},
1012 {"--compile", "-c", 0},
1013 {"--debug", "-g", "oj"},
1014 {"--define-macro", "-D", "aj"},
1015 {"--dependencies", "-M", 0},
1016 {"--dump", "-d", "a"},
1017 {"--dumpbase", "-dumpbase", "a"},
1018 {"--entry", "-e", 0},
1019 {"--extra-warnings", "-W", 0},
1020 {"--for-assembler", "-Wa", "a"},
1021 {"--for-linker", "-Xlinker", "a"},
1022 {"--force-link", "-u", "a"},
1023 {"--imacros", "-imacros", "a"},
1024 {"--include", "-include", "a"},
1025 {"--include-barrier", "-I-", 0},
1026 {"--include-directory", "-I", "aj"},
1027 {"--include-directory-after", "-idirafter", "a"},
1028 {"--include-prefix", "-iprefix", "a"},
1029 {"--include-with-prefix", "-iwithprefix", "a"},
1030 {"--include-with-prefix-before", "-iwithprefixbefore", "a"},
1031 {"--include-with-prefix-after", "-iwithprefix", "a"},
1032 {"--language", "-x", "a"},
1033 {"--library-directory", "-L", "a"},
1034 {"--machine", "-m", "aj"},
1035 {"--machine-", "-m", "*j"},
1036 {"--no-integrated-cpp", "-no-integrated-cpp", 0},
1037 {"--no-line-commands", "-P", 0},
1038 {"--no-precompiled-includes", "-noprecomp", 0},
1039 {"--no-standard-includes", "-nostdinc", 0},
1040 {"--no-standard-libraries", "-nostdlib", 0},
1041 {"--no-warnings", "-w", 0},
1042 {"--optimize", "-O", "oj"},
1043 {"--output", "-o", "a"},
1044 {"--output-class-directory", "-foutput-class-dir=", "ja"},
1045 {"--param", "--param", "a"},
1046 {"--pedantic", "-pedantic", 0},
1047 {"--pedantic-errors", "-pedantic-errors", 0},
1048 {"--pie", "-pie", 0},
1049 {"--pipe", "-pipe", 0},
1050 {"--prefix", "-B", "a"},
1051 {"--preprocess", "-E", 0},
1052 {"--print-search-dirs", "-print-search-dirs", 0},
1053 {"--print-file-name", "-print-file-name=", "aj"},
1054 {"--print-libgcc-file-name", "-print-libgcc-file-name", 0},
1055 {"--print-missing-file-dependencies", "-MG", 0},
1056 {"--print-multi-lib", "-print-multi-lib", 0},
1057 {"--print-multi-directory", "-print-multi-directory", 0},
1058 {"--print-multi-os-directory", "-print-multi-os-directory", 0},
1059 {"--print-prog-name", "-print-prog-name=", "aj"},
1060 {"--profile", "-p", 0},
1061 {"--profile-blocks", "-a", 0},
1062 {"--quiet", "-q", 0},
1063 {"--resource", "-fcompile-resource=", "aj"},
1064 {"--save-temps", "-save-temps", 0},
1065 {"--shared", "-shared", 0},
1066 {"--silent", "-q", 0},
1067 {"--specs", "-specs=", "aj"},
1068 {"--static", "-static", 0},
1069 {"--std", "-std=", "aj"},
1070 {"--symbolic", "-symbolic", 0},
1071 {"--time", "-time", 0},
1072 {"--trace-includes", "-H", 0},
1073 {"--traditional", "-traditional", 0},
1074 {"--traditional-cpp", "-traditional-cpp", 0},
1075 {"--trigraphs", "-trigraphs", 0},
1076 {"--undefine-macro", "-U", "aj"},
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 (int *argcp, const char *const **argvp)
1106 const char *const *argv = *argvp;
1107 int newvsize = (argc + 2) * 2 * sizeof (const char *);
1108 const char **newv = xmalloc (newvsize);
1112 newv[newindex++] = argv[i++];
1116 #ifdef TARGET_OPTION_TRANSLATE_TABLE
1120 target_option_translations[tott_idx].option_found;
1123 if (strcmp (target_option_translations[tott_idx].option_found,
1130 for (sp = target_option_translations[tott_idx].replacements;
1137 newvsize += spaces * sizeof (const char *);
1138 newv = xrealloc (newv, newvsize);
1140 sp = target_option_translations[tott_idx].replacements;
1149 newv[newindex++] = np;
1150 while (*np != ' ' && *np)
1161 if (target_option_translations[tott_idx].option_found)
1165 /* Translate -- options. */
1166 if (argv[i][0] == '-' && argv[i][1] == '-')
1169 /* Find a mapping that applies to this option. */
1170 for (j = 0; j < ARRAY_SIZE (option_map); j++)
1172 size_t optlen = strlen (option_map[j].name);
1173 size_t arglen = strlen (argv[i]);
1174 size_t complen = arglen > optlen ? optlen : arglen;
1175 const char *arginfo = option_map[j].arg_info;
1180 if (!strncmp (argv[i], option_map[j].name, complen))
1182 const char *arg = 0;
1184 if (arglen < optlen)
1187 for (k = j + 1; k < ARRAY_SIZE (option_map); k++)
1188 if (strlen (option_map[k].name) >= arglen
1189 && !strncmp (argv[i], option_map[k].name, arglen))
1191 error ("ambiguous abbreviation %s", argv[i]);
1195 if (k != ARRAY_SIZE (option_map))
1199 if (arglen > optlen)
1201 /* If the option has an argument, accept that. */
1202 if (argv[i][optlen] == '=')
1203 arg = argv[i] + optlen + 1;
1205 /* If this mapping requires extra text at end of name,
1206 accept that as "argument". */
1207 else if (strchr (arginfo, '*') != 0)
1208 arg = argv[i] + optlen;
1210 /* Otherwise, extra text at end means mismatch.
1211 Try other mappings. */
1216 else if (strchr (arginfo, '*') != 0)
1218 error ("incomplete `%s' option", option_map[j].name);
1222 /* Handle arguments. */
1223 if (strchr (arginfo, 'a') != 0)
1229 error ("missing argument to `%s' option",
1230 option_map[j].name);
1237 else if (strchr (arginfo, '*') != 0)
1239 else if (strchr (arginfo, 'o') == 0)
1242 error ("extraneous argument to `%s' option",
1243 option_map[j].name);
1247 /* Store the translation as one argv elt or as two. */
1248 if (arg != 0 && strchr (arginfo, 'j') != 0)
1249 newv[newindex++] = concat (option_map[j].equivalent, arg,
1253 newv[newindex++] = option_map[j].equivalent;
1254 newv[newindex++] = arg;
1257 newv[newindex++] = option_map[j].equivalent;
1265 /* Handle old-fashioned options--just copy them through,
1266 with their arguments. */
1267 else if (argv[i][0] == '-')
1269 const char *p = argv[i] + 1;
1273 if (SWITCH_TAKES_ARG (c) > (p[1] != 0))
1274 nskip += SWITCH_TAKES_ARG (c) - (p[1] != 0);
1275 else if (WORD_SWITCH_TAKES_ARG (p))
1276 nskip += WORD_SWITCH_TAKES_ARG (p);
1277 else if ((c == 'B' || c == 'b' || c == 'x')
1280 else if (! strcmp (p, "Xlinker"))
1282 else if (! strcmp (p, "Xpreprocessor"))
1284 else if (! strcmp (p, "Xassembler"))
1287 /* Watch out for an option at the end of the command line that
1288 is missing arguments, and avoid skipping past the end of the
1290 if (nskip + i > argc)
1295 newv[newindex++] = argv[i++];
1300 /* Ordinary operands, or +e options. */
1301 newv[newindex++] = argv[i++];
1311 skip_whitespace (char *p)
1315 /* A fully-blank line is a delimiter in the SPEC file and shouldn't
1316 be considered whitespace. */
1317 if (p[0] == '\n' && p[1] == '\n' && p[2] == '\n')
1319 else if (*p == '\n' || *p == ' ' || *p == '\t')
1333 /* Structures to keep track of prefixes to try when looking for files. */
1337 const char *prefix; /* String to prepend to the path. */
1338 struct prefix_list *next; /* Next in linked list. */
1339 int require_machine_suffix; /* Don't use without machine_suffix. */
1340 /* 2 means try both machine_suffix and just_machine_suffix. */
1341 int *used_flag_ptr; /* 1 if a file was found with this prefix. */
1342 int priority; /* Sort key - priority within list. */
1343 int os_multilib; /* 1 if OS multilib scheme should be used,
1344 0 for GCC multilib scheme. */
1349 struct prefix_list *plist; /* List of prefixes to try */
1350 int max_len; /* Max length of a prefix in PLIST */
1351 const char *name; /* Name of this list (used in config stuff) */
1354 /* List of prefixes to try when looking for executables. */
1356 static struct path_prefix exec_prefixes = { 0, 0, "exec" };
1358 /* List of prefixes to try when looking for startup (crt0) files. */
1360 static struct path_prefix startfile_prefixes = { 0, 0, "startfile" };
1362 /* List of prefixes to try when looking for include files. */
1364 static struct path_prefix include_prefixes = { 0, 0, "include" };
1366 /* Suffix to attach to directories searched for commands.
1367 This looks like `MACHINE/VERSION/'. */
1369 static const char *machine_suffix = 0;
1371 /* Suffix to attach to directories searched for commands.
1372 This is just `MACHINE/'. */
1374 static const char *just_machine_suffix = 0;
1376 /* Adjusted value of GCC_EXEC_PREFIX envvar. */
1378 static const char *gcc_exec_prefix;
1380 /* Adjusted value of standard_libexec_prefix. */
1382 static const char *gcc_libexec_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 static const char *const standard_exec_prefix = STANDARD_EXEC_PREFIX;
1404 static const char *const standard_exec_prefix_1 = "/usr/libexec/gcc/";
1405 static const char *const standard_exec_prefix_2 = "/usr/lib/gcc/";
1406 static const char *md_exec_prefix = MD_EXEC_PREFIX;
1408 static const char *md_startfile_prefix = MD_STARTFILE_PREFIX;
1409 static const char *md_startfile_prefix_1 = MD_STARTFILE_PREFIX_1;
1410 static const char *const standard_startfile_prefix = STANDARD_STARTFILE_PREFIX;
1411 static const char *const standard_startfile_prefix_1 = "/lib/";
1412 static const char *const standard_startfile_prefix_2 = "/usr/lib/";
1414 static const char *const tooldir_base_prefix = TOOLDIR_BASE_PREFIX;
1415 static const char *tooldir_prefix;
1417 static const char *const standard_bindir_prefix = STANDARD_BINDIR_PREFIX;
1419 static const char *standard_libexec_prefix = STANDARD_LIBEXEC_PREFIX;
1421 /* Subdirectory to use for locating libraries. Set by
1422 set_multilib_dir based on the compilation options. */
1424 static const char *multilib_dir;
1426 /* Subdirectory to use for locating libraries in OS conventions. Set by
1427 set_multilib_dir based on the compilation options. */
1429 static const char *multilib_os_dir;
1431 /* Structure to keep track of the specs that have been defined so far.
1432 These are accessed using %(specname) or %[specname] in a compiler
1437 /* The following 2 fields must be first */
1438 /* to allow EXTRA_SPECS to be initialized */
1439 const char *name; /* name of the spec. */
1440 const char *ptr; /* available ptr if no static pointer */
1442 /* The following fields are not initialized */
1443 /* by EXTRA_SPECS */
1444 const char **ptr_spec; /* pointer to the spec itself. */
1445 struct spec_list *next; /* Next spec in linked list. */
1446 int name_len; /* length of the name */
1447 int alloc_p; /* whether string was allocated */
1450 #define INIT_STATIC_SPEC(NAME,PTR) \
1451 { NAME, NULL, PTR, (struct spec_list *) 0, sizeof (NAME) - 1, 0 }
1453 /* List of statically defined specs. */
1454 static struct spec_list static_specs[] =
1456 INIT_STATIC_SPEC ("asm", &asm_spec),
1457 INIT_STATIC_SPEC ("asm_debug", &asm_debug),
1458 INIT_STATIC_SPEC ("asm_final", &asm_final_spec),
1459 INIT_STATIC_SPEC ("asm_options", &asm_options),
1460 INIT_STATIC_SPEC ("invoke_as", &invoke_as),
1461 INIT_STATIC_SPEC ("cpp", &cpp_spec),
1462 INIT_STATIC_SPEC ("cpp_options", &cpp_options),
1463 INIT_STATIC_SPEC ("cpp_debug_options", &cpp_debug_options),
1464 INIT_STATIC_SPEC ("cpp_unique_options", &cpp_unique_options),
1465 INIT_STATIC_SPEC ("trad_capable_cpp", &trad_capable_cpp),
1466 INIT_STATIC_SPEC ("cc1", &cc1_spec),
1467 INIT_STATIC_SPEC ("cc1_options", &cc1_options),
1468 INIT_STATIC_SPEC ("cc1plus", &cc1plus_spec),
1469 INIT_STATIC_SPEC ("link_gcc_c_sequence", &link_gcc_c_sequence_spec),
1470 INIT_STATIC_SPEC ("endfile", &endfile_spec),
1471 INIT_STATIC_SPEC ("link", &link_spec),
1472 INIT_STATIC_SPEC ("lib", &lib_spec),
1473 INIT_STATIC_SPEC ("libgcc", &libgcc_spec),
1474 INIT_STATIC_SPEC ("startfile", &startfile_spec),
1475 INIT_STATIC_SPEC ("switches_need_spaces", &switches_need_spaces),
1476 INIT_STATIC_SPEC ("cross_compile", &cross_compile),
1477 INIT_STATIC_SPEC ("version", &compiler_version),
1478 INIT_STATIC_SPEC ("multilib", &multilib_select),
1479 INIT_STATIC_SPEC ("multilib_defaults", &multilib_defaults),
1480 INIT_STATIC_SPEC ("multilib_extra", &multilib_extra),
1481 INIT_STATIC_SPEC ("multilib_matches", &multilib_matches),
1482 INIT_STATIC_SPEC ("multilib_exclusions", &multilib_exclusions),
1483 INIT_STATIC_SPEC ("multilib_options", &multilib_options),
1484 INIT_STATIC_SPEC ("linker", &linker_name_spec),
1485 INIT_STATIC_SPEC ("link_libgcc", &link_libgcc_spec),
1486 INIT_STATIC_SPEC ("md_exec_prefix", &md_exec_prefix),
1487 INIT_STATIC_SPEC ("md_startfile_prefix", &md_startfile_prefix),
1488 INIT_STATIC_SPEC ("md_startfile_prefix_1", &md_startfile_prefix_1),
1489 INIT_STATIC_SPEC ("startfile_prefix_spec", &startfile_prefix_spec),
1490 INIT_STATIC_SPEC ("sysroot_suffix_spec", &sysroot_suffix_spec),
1491 INIT_STATIC_SPEC ("sysroot_hdrs_suffix_spec", &sysroot_hdrs_suffix_spec),
1494 #ifdef EXTRA_SPECS /* additional specs needed */
1495 /* Structure to keep track of just the first two args of a spec_list.
1496 That is all that the EXTRA_SPECS macro gives us. */
1499 const char *const name;
1500 const char *const ptr;
1503 static const struct spec_list_1 extra_specs_1[] = { EXTRA_SPECS };
1504 static struct spec_list *extra_specs = (struct spec_list *) 0;
1507 /* List of dynamically allocates specs that have been defined so far. */
1509 static struct spec_list *specs = (struct spec_list *) 0;
1511 /* List of static spec functions. */
1513 static const struct spec_function static_spec_functions[] =
1515 { "if-exists", if_exists_spec_function },
1516 { "if-exists-else", if_exists_else_spec_function },
1520 static int processing_spec_function;
1522 /* Add appropriate libgcc specs to OBSTACK, taking into account
1523 various permutations of -shared-libgcc, -shared, and such. */
1525 #ifdef ENABLE_SHARED_LIBGCC
1527 init_gcc_specs (struct obstack *obstack, const char *shared_name,
1528 const char *static_name, const char *eh_name)
1532 buf = concat ("%{static|static-libgcc:", static_name, " ", eh_name,
1533 "}%{!static:%{!static-libgcc:",
1534 #ifdef HAVE_LD_AS_NEEDED
1535 "%{!shared-libgcc:", static_name,
1536 " --as-needed ", shared_name, " --no-as-needed}"
1537 "%{shared-libgcc:", shared_name, "%{!shared: ", static_name,
1540 "%{!shared:%{!shared-libgcc:", static_name, " ",
1541 eh_name, "}%{shared-libgcc:", shared_name, " ",
1542 static_name, "}}%{shared:",
1544 "%{shared-libgcc:", shared_name,
1545 "}%{!shared-libgcc:", static_name, "}",
1552 obstack_grow (obstack, buf, strlen (buf));
1555 #endif /* ENABLE_SHARED_LIBGCC */
1557 /* Initialize the specs lookup routines. */
1562 struct spec_list *next = (struct spec_list *) 0;
1563 struct spec_list *sl = (struct spec_list *) 0;
1567 return; /* Already initialized. */
1570 notice ("Using built-in specs.\n");
1573 extra_specs = xcalloc (sizeof (struct spec_list),
1574 ARRAY_SIZE (extra_specs_1));
1576 for (i = ARRAY_SIZE (extra_specs_1) - 1; i >= 0; i--)
1578 sl = &extra_specs[i];
1579 sl->name = extra_specs_1[i].name;
1580 sl->ptr = extra_specs_1[i].ptr;
1582 sl->name_len = strlen (sl->name);
1583 sl->ptr_spec = &sl->ptr;
1588 /* Initialize here, not in definition. The IRIX 6 O32 cc sometimes chokes
1589 on ?: in file-scope variable initializations. */
1590 asm_debug = ASM_DEBUG_SPEC;
1592 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--)
1594 sl = &static_specs[i];
1599 #ifdef ENABLE_SHARED_LIBGCC
1600 /* ??? If neither -shared-libgcc nor --static-libgcc was
1601 seen, then we should be making an educated guess. Some proposed
1602 heuristics for ELF include:
1604 (1) If "-Wl,--export-dynamic", then it's a fair bet that the
1605 program will be doing dynamic loading, which will likely
1606 need the shared libgcc.
1608 (2) If "-ldl", then it's also a fair bet that we're doing
1611 (3) For each ET_DYN we're linking against (either through -lfoo
1612 or /some/path/foo.so), check to see whether it or one of
1613 its dependencies depends on a shared libgcc.
1617 If the runtime is fixed to look for program headers instead
1618 of calling __register_frame_info at all, for each object,
1619 use the shared libgcc if any EH symbol referenced.
1621 If crtstuff is fixed to not invoke __register_frame_info
1622 automatically, for each object, use the shared libgcc if
1623 any non-empty unwind section found.
1625 Doing any of this probably requires invoking an external program to
1626 do the actual object file scanning. */
1628 const char *p = libgcc_spec;
1631 /* Transform the extant libgcc_spec into one that uses the shared libgcc
1632 when given the proper command line arguments. */
1635 if (in_sep && *p == '-' && strncmp (p, "-lgcc", 5) == 0)
1637 init_gcc_specs (&obstack,
1638 #ifdef NO_SHARED_LIBGCC_MULTILIB
1646 #ifdef USE_LIBUNWIND_EXCEPTIONS
1654 else if (in_sep && *p == 'l' && strncmp (p, "libgcc.a%s", 10) == 0)
1656 /* Ug. We don't know shared library extensions. Hope that
1657 systems that use this form don't do shared libraries. */
1658 init_gcc_specs (&obstack,
1659 #ifdef NO_SHARED_LIBGCC_MULTILIB
1667 #ifdef USE_LIBUNWIND_EXCEPTIONS
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 (const char *name, const char *spec)
1712 struct spec_list *sl;
1713 const char *old_spec;
1714 int name_len = strlen (name);
1717 /* If this is the first call, initialize the statically allocated specs. */
1720 struct spec_list *next = (struct spec_list *) 0;
1721 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--)
1723 sl = &static_specs[i];
1730 /* See if the spec already exists. */
1731 for (sl = specs; sl; sl = sl->next)
1732 if (name_len == sl->name_len && !strcmp (sl->name, name))
1737 /* Not found - make it. */
1738 sl = xmalloc (sizeof (struct spec_list));
1739 sl->name = xstrdup (name);
1740 sl->name_len = name_len;
1741 sl->ptr_spec = &sl->ptr;
1743 *(sl->ptr_spec) = "";
1748 old_spec = *(sl->ptr_spec);
1749 *(sl->ptr_spec) = ((spec[0] == '+' && ISSPACE ((unsigned char)spec[1]))
1750 ? concat (old_spec, spec + 1, NULL)
1755 notice ("Setting spec %s to '%s'\n\n", name, *(sl->ptr_spec));
1758 /* Free the old spec. */
1759 if (old_spec && sl->alloc_p)
1760 free ((void *) old_spec);
1765 /* Accumulate a command (program name and args), and run it. */
1767 /* Vector of pointers to arguments in the current line of specifications. */
1769 static const char **argbuf;
1771 /* Number of elements allocated in argbuf. */
1773 static int argbuf_length;
1775 /* Number of elements in argbuf currently in use (containing args). */
1777 static int argbuf_index;
1779 /* This is the list of suffixes and codes (%g/%u/%U/%j) and the associated
1780 temp file. If the HOST_BIT_BUCKET is used for %j, no entry is made for
1783 static struct temp_name {
1784 const char *suffix; /* suffix associated with the code. */
1785 int length; /* strlen (suffix). */
1786 int unique; /* Indicates whether %g or %u/%U was used. */
1787 const char *filename; /* associated filename. */
1788 int filename_length; /* strlen (filename). */
1789 struct temp_name *next;
1792 /* Number of commands executed so far. */
1794 static int execution_count;
1796 /* Number of commands that exited with a signal. */
1798 static int signal_count;
1800 /* Name with which this program was invoked. */
1802 static const char *programname;
1804 /* Allocate the argument vector. */
1810 argbuf = xmalloc (argbuf_length * sizeof (const char *));
1813 /* Clear out the vector of arguments (after a command is executed). */
1821 /* Add one argument to the vector at the end.
1822 This is done when a space is seen or at the end of the line.
1823 If DELETE_ALWAYS is nonzero, the arg is a filename
1824 and the file should be deleted eventually.
1825 If DELETE_FAILURE is nonzero, the arg is a filename
1826 and the file should be deleted if this compilation fails. */
1829 store_arg (const char *arg, int delete_always, int delete_failure)
1831 if (argbuf_index + 1 == argbuf_length)
1832 argbuf = xrealloc (argbuf, (argbuf_length *= 2) * sizeof (const char *));
1834 argbuf[argbuf_index++] = arg;
1835 argbuf[argbuf_index] = 0;
1837 if (delete_always || delete_failure)
1838 record_temp_file (arg, delete_always, delete_failure);
1841 /* Load specs from a file name named FILENAME, replacing occurrences of
1842 various different types of line-endings, \r\n, \n\r and just \r, with
1846 load_specs (const char *filename)
1850 struct stat statbuf;
1857 notice ("Reading specs from %s\n", filename);
1859 /* Open and stat the file. */
1860 desc = open (filename, O_RDONLY, 0);
1862 pfatal_with_name (filename);
1863 if (stat (filename, &statbuf) < 0)
1864 pfatal_with_name (filename);
1866 /* Read contents of file into BUFFER. */
1867 buffer = xmalloc ((unsigned) statbuf.st_size + 1);
1868 readlen = read (desc, buffer, (unsigned) statbuf.st_size);
1870 pfatal_with_name (filename);
1871 buffer[readlen] = 0;
1874 specs = xmalloc (readlen + 1);
1876 for (buffer_p = buffer; buffer_p && *buffer_p; buffer_p++)
1882 if (buffer_p > buffer && *(buffer_p - 1) == '\n') /* \n\r */
1884 else if (*(buffer_p + 1) == '\n') /* \r\n */
1898 /* Read compilation specs from a file named FILENAME,
1899 replacing the default ones.
1901 A suffix which starts with `*' is a definition for
1902 one of the machine-specific sub-specs. The "suffix" should be
1903 *asm, *cc1, *cpp, *link, *startfile, etc.
1904 The corresponding spec is stored in asm_spec, etc.,
1905 rather than in the `compilers' vector.
1907 Anything invalid in the file is a fatal error. */
1910 read_specs (const char *filename, int main_p)
1915 buffer = load_specs (filename);
1917 /* Scan BUFFER for specs, putting them in the vector. */
1923 char *in, *out, *p1, *p2, *p3;
1925 /* Advance P in BUFFER to the next nonblank nocomment line. */
1926 p = skip_whitespace (p);
1930 /* Is this a special command that starts with '%'? */
1931 /* Don't allow this for the main specs file, since it would
1932 encourage people to overwrite it. */
1933 if (*p == '%' && !main_p)
1936 while (*p && *p != '\n')
1942 if (!strncmp (p1, "%include", sizeof ("%include") - 1)
1943 && (p1[sizeof "%include" - 1] == ' '
1944 || p1[sizeof "%include" - 1] == '\t'))
1948 p1 += sizeof ("%include");
1949 while (*p1 == ' ' || *p1 == '\t')
1952 if (*p1++ != '<' || p[-2] != '>')
1953 fatal ("specs %%include syntax malformed after %ld characters",
1954 (long) (p1 - buffer + 1));
1957 new_filename = find_a_file (&startfile_prefixes, p1, R_OK, 0);
1958 read_specs (new_filename ? new_filename : p1, FALSE);
1961 else if (!strncmp (p1, "%include_noerr", sizeof "%include_noerr" - 1)
1962 && (p1[sizeof "%include_noerr" - 1] == ' '
1963 || p1[sizeof "%include_noerr" - 1] == '\t'))
1967 p1 += sizeof "%include_noerr";
1968 while (*p1 == ' ' || *p1 == '\t')
1971 if (*p1++ != '<' || p[-2] != '>')
1972 fatal ("specs %%include syntax malformed after %ld characters",
1973 (long) (p1 - buffer + 1));
1976 new_filename = find_a_file (&startfile_prefixes, p1, R_OK, 0);
1978 read_specs (new_filename, FALSE);
1979 else if (verbose_flag)
1980 notice ("could not find specs file %s\n", p1);
1983 else if (!strncmp (p1, "%rename", sizeof "%rename" - 1)
1984 && (p1[sizeof "%rename" - 1] == ' '
1985 || p1[sizeof "%rename" - 1] == '\t'))
1988 struct spec_list *sl;
1989 struct spec_list *newsl;
1991 /* Get original name. */
1992 p1 += sizeof "%rename";
1993 while (*p1 == ' ' || *p1 == '\t')
1996 if (! ISALPHA ((unsigned char) *p1))
1997 fatal ("specs %%rename syntax malformed after %ld characters",
1998 (long) (p1 - buffer));
2001 while (*p2 && !ISSPACE ((unsigned char) *p2))
2004 if (*p2 != ' ' && *p2 != '\t')
2005 fatal ("specs %%rename syntax malformed after %ld characters",
2006 (long) (p2 - buffer));
2010 while (*p2 == ' ' || *p2 == '\t')
2013 if (! ISALPHA ((unsigned char) *p2))
2014 fatal ("specs %%rename syntax malformed after %ld characters",
2015 (long) (p2 - buffer));
2017 /* Get new spec name. */
2019 while (*p3 && !ISSPACE ((unsigned char) *p3))
2023 fatal ("specs %%rename syntax malformed after %ld characters",
2024 (long) (p3 - buffer));
2027 for (sl = specs; sl; sl = sl->next)
2028 if (name_len == sl->name_len && !strcmp (sl->name, p1))
2032 fatal ("specs %s spec was not found to be renamed", p1);
2034 if (strcmp (p1, p2) == 0)
2037 for (newsl = specs; newsl; newsl = newsl->next)
2038 if (strcmp (newsl->name, p2) == 0)
2039 fatal ("%s: attempt to rename spec '%s' to already defined spec '%s'",
2044 notice ("rename spec %s to %s\n", p1, p2);
2046 notice ("spec is '%s'\n\n", *(sl->ptr_spec));
2050 set_spec (p2, *(sl->ptr_spec));
2052 free ((void *) *(sl->ptr_spec));
2054 *(sl->ptr_spec) = "";
2059 fatal ("specs unknown %% command after %ld characters",
2060 (long) (p1 - buffer));
2063 /* Find the colon that should end the suffix. */
2065 while (*p1 && *p1 != ':' && *p1 != '\n')
2068 /* The colon shouldn't be missing. */
2070 fatal ("specs file malformed after %ld characters",
2071 (long) (p1 - buffer));
2073 /* Skip back over trailing whitespace. */
2075 while (p2 > buffer && (p2[-1] == ' ' || p2[-1] == '\t'))
2078 /* Copy the suffix to a string. */
2079 suffix = save_string (p, p2 - p);
2080 /* Find the next line. */
2081 p = skip_whitespace (p1 + 1);
2083 fatal ("specs file malformed after %ld characters",
2084 (long) (p - buffer));
2087 /* Find next blank line or end of string. */
2088 while (*p1 && !(*p1 == '\n' && (p1[1] == '\n' || p1[1] == '\0')))
2091 /* Specs end at the blank line and do not include the newline. */
2092 spec = save_string (p, p1 - p);
2095 /* Delete backslash-newline sequences from the spec. */
2100 if (in[0] == '\\' && in[1] == '\n')
2102 else if (in[0] == '#')
2103 while (*in && *in != '\n')
2111 if (suffix[0] == '*')
2113 if (! strcmp (suffix, "*link_command"))
2114 link_command_spec = spec;
2116 set_spec (suffix + 1, spec);
2120 /* Add this pair to the vector. */
2122 = xrealloc (compilers,
2123 (n_compilers + 2) * sizeof (struct compiler));
2125 compilers[n_compilers].suffix = suffix;
2126 compilers[n_compilers].spec = spec;
2128 memset (&compilers[n_compilers], 0, sizeof compilers[n_compilers]);
2132 link_command_spec = spec;
2135 if (link_command_spec == 0)
2136 fatal ("spec file has no spec for linking");
2139 /* Record the names of temporary files we tell compilers to write,
2140 and delete them at the end of the run. */
2142 /* This is the common prefix we use to make temp file names.
2143 It is chosen once for each run of this program.
2144 It is substituted into a spec by %g or %j.
2145 Thus, all temp file names contain this prefix.
2146 In practice, all temp file names start with this prefix.
2148 This prefix comes from the envvar TMPDIR if it is defined;
2149 otherwise, from the P_tmpdir macro if that is defined;
2150 otherwise, in /usr/tmp or /tmp;
2151 or finally the current directory if all else fails. */
2153 static const char *temp_filename;
2155 /* Length of the prefix. */
2157 static int temp_filename_length;
2159 /* Define the list of temporary files to delete. */
2164 struct temp_file *next;
2167 /* Queue of files to delete on success or failure of compilation. */
2168 static struct temp_file *always_delete_queue;
2169 /* Queue of files to delete on failure of compilation. */
2170 static struct temp_file *failure_delete_queue;
2172 /* Record FILENAME as a file to be deleted automatically.
2173 ALWAYS_DELETE nonzero means delete it if all compilation succeeds;
2174 otherwise delete it in any case.
2175 FAIL_DELETE nonzero means delete it if a compilation step fails;
2176 otherwise delete it in any case. */
2179 record_temp_file (const char *filename, int always_delete, int fail_delete)
2181 char *const name = xstrdup (filename);
2185 struct temp_file *temp;
2186 for (temp = always_delete_queue; temp; temp = temp->next)
2187 if (! strcmp (name, temp->name))
2190 temp = xmalloc (sizeof (struct temp_file));
2191 temp->next = always_delete_queue;
2193 always_delete_queue = temp;
2200 struct temp_file *temp;
2201 for (temp = failure_delete_queue; temp; temp = temp->next)
2202 if (! strcmp (name, temp->name))
2205 temp = xmalloc (sizeof (struct temp_file));
2206 temp->next = failure_delete_queue;
2208 failure_delete_queue = temp;
2214 /* Delete all the temporary files whose names we previously recorded. */
2217 delete_if_ordinary (const char *name)
2223 printf ("Delete %s? (y or n) ", name);
2227 while ((c = getchar ()) != '\n' && c != EOF)
2230 if (i == 'y' || i == 'Y')
2232 if (stat (name, &st) >= 0 && S_ISREG (st.st_mode))
2233 if (unlink (name) < 0)
2235 perror_with_name (name);
2239 delete_temp_files (void)
2241 struct temp_file *temp;
2243 for (temp = always_delete_queue; temp; temp = temp->next)
2244 delete_if_ordinary (temp->name);
2245 always_delete_queue = 0;
2248 /* Delete all the files to be deleted on error. */
2251 delete_failure_queue (void)
2253 struct temp_file *temp;
2255 for (temp = failure_delete_queue; temp; temp = temp->next)
2256 delete_if_ordinary (temp->name);
2260 clear_failure_queue (void)
2262 failure_delete_queue = 0;
2265 /* Build a list of search directories from PATHS.
2266 PREFIX is a string to prepend to the list.
2267 If CHECK_DIR_P is nonzero we ensure the directory exists.
2268 This is used mostly by putenv_from_prefixes so we use `collect_obstack'.
2269 It is also used by the --print-search-dirs flag. */
2272 build_search_list (struct path_prefix *paths, const char *prefix,
2275 int suffix_len = (machine_suffix) ? strlen (machine_suffix) : 0;
2277 = (just_machine_suffix) ? strlen (just_machine_suffix) : 0;
2278 int first_time = TRUE;
2279 struct prefix_list *pprefix;
2281 obstack_grow (&collect_obstack, prefix, strlen (prefix));
2282 obstack_1grow (&collect_obstack, '=');
2284 for (pprefix = paths->plist; pprefix != 0; pprefix = pprefix->next)
2286 int len = strlen (pprefix->prefix);
2290 || is_directory (pprefix->prefix, machine_suffix, 0)))
2293 obstack_1grow (&collect_obstack, PATH_SEPARATOR);
2296 obstack_grow (&collect_obstack, pprefix->prefix, len);
2297 obstack_grow (&collect_obstack, machine_suffix, suffix_len);
2300 if (just_machine_suffix
2301 && pprefix->require_machine_suffix == 2
2303 || is_directory (pprefix->prefix, just_machine_suffix, 0)))
2306 obstack_1grow (&collect_obstack, PATH_SEPARATOR);
2309 obstack_grow (&collect_obstack, pprefix->prefix, len);
2310 obstack_grow (&collect_obstack, just_machine_suffix,
2314 if (! pprefix->require_machine_suffix)
2317 obstack_1grow (&collect_obstack, PATH_SEPARATOR);
2320 obstack_grow (&collect_obstack, pprefix->prefix, len);
2324 obstack_1grow (&collect_obstack, '\0');
2325 return obstack_finish (&collect_obstack);
2328 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
2332 putenv_from_prefixes (struct path_prefix *paths, const char *env_var)
2334 putenv (build_search_list (paths, env_var, 1));
2337 /* Check whether NAME can be accessed in MODE. This is like access,
2338 except that it never considers directories to be executable. */
2341 access_check (const char *name, int mode)
2347 if (stat (name, &st) < 0
2348 || S_ISDIR (st.st_mode))
2352 return access (name, mode);
2355 /* Search for NAME using the prefix list PREFIXES. MODE is passed to
2356 access to check permissions.
2357 Return 0 if not found, otherwise return its name, allocated with malloc. */
2360 find_a_file (struct path_prefix *pprefix, const char *name, int mode,
2364 const char *const file_suffix =
2365 ((mode & X_OK) != 0 ? HOST_EXECUTABLE_SUFFIX : "");
2366 struct prefix_list *pl;
2367 int len = pprefix->max_len + strlen (name) + strlen (file_suffix) + 1;
2368 const char *multilib_name, *multilib_os_name;
2370 #ifdef DEFAULT_ASSEMBLER
2371 if (! strcmp (name, "as") && access (DEFAULT_ASSEMBLER, mode) == 0)
2372 return xstrdup (DEFAULT_ASSEMBLER);
2375 #ifdef DEFAULT_LINKER
2376 if (! strcmp(name, "ld") && access (DEFAULT_LINKER, mode) == 0)
2377 return xstrdup (DEFAULT_LINKER);
2381 len += strlen (machine_suffix);
2383 multilib_name = name;
2384 multilib_os_name = name;
2385 if (multilib && multilib_os_dir)
2387 int len1 = multilib_dir ? strlen (multilib_dir) + 1 : 0;
2388 int len2 = strlen (multilib_os_dir) + 1;
2390 len += len1 > len2 ? len1 : len2;
2392 multilib_name = ACONCAT ((multilib_dir, dir_separator_str, name,
2394 if (strcmp (multilib_os_dir, ".") != 0)
2395 multilib_os_name = ACONCAT ((multilib_os_dir, dir_separator_str, name,
2399 temp = xmalloc (len);
2401 /* Determine the filename to execute (special case for absolute paths). */
2403 if (IS_ABSOLUTE_PATH (name))
2405 if (access (name, mode) == 0)
2407 strcpy (temp, name);
2412 for (pl = pprefix->plist; pl; pl = pl->next)
2414 const char *this_name
2415 = pl->os_multilib ? multilib_os_name : multilib_name;
2419 /* Some systems have a suffix for executable files.
2420 So try appending that first. */
2421 if (file_suffix[0] != 0)
2423 strcpy (temp, pl->prefix);
2424 strcat (temp, machine_suffix);
2425 strcat (temp, multilib_name);
2426 strcat (temp, file_suffix);
2427 if (access_check (temp, mode) == 0)
2429 if (pl->used_flag_ptr != 0)
2430 *pl->used_flag_ptr = 1;
2435 /* Now try just the multilib_name. */
2436 strcpy (temp, pl->prefix);
2437 strcat (temp, machine_suffix);
2438 strcat (temp, multilib_name);
2439 if (access_check (temp, mode) == 0)
2441 if (pl->used_flag_ptr != 0)
2442 *pl->used_flag_ptr = 1;
2447 /* Certain prefixes are tried with just the machine type,
2448 not the version. This is used for finding as, ld, etc. */
2449 if (just_machine_suffix && pl->require_machine_suffix == 2)
2451 /* Some systems have a suffix for executable files.
2452 So try appending that first. */
2453 if (file_suffix[0] != 0)
2455 strcpy (temp, pl->prefix);
2456 strcat (temp, just_machine_suffix);
2457 strcat (temp, multilib_name);
2458 strcat (temp, file_suffix);
2459 if (access_check (temp, mode) == 0)
2461 if (pl->used_flag_ptr != 0)
2462 *pl->used_flag_ptr = 1;
2467 strcpy (temp, pl->prefix);
2468 strcat (temp, just_machine_suffix);
2469 strcat (temp, multilib_name);
2470 if (access_check (temp, mode) == 0)
2472 if (pl->used_flag_ptr != 0)
2473 *pl->used_flag_ptr = 1;
2478 /* Certain prefixes can't be used without the machine suffix
2479 when the machine or version is explicitly specified. */
2480 if (! pl->require_machine_suffix)
2482 /* Some systems have a suffix for executable files.
2483 So try appending that first. */
2484 if (file_suffix[0] != 0)
2486 strcpy (temp, pl->prefix);
2487 strcat (temp, this_name);
2488 strcat (temp, file_suffix);
2489 if (access_check (temp, mode) == 0)
2491 if (pl->used_flag_ptr != 0)
2492 *pl->used_flag_ptr = 1;
2497 strcpy (temp, pl->prefix);
2498 strcat (temp, this_name);
2499 if (access_check (temp, mode) == 0)
2501 if (pl->used_flag_ptr != 0)
2502 *pl->used_flag_ptr = 1;
2512 /* Ranking of prefixes in the sort list. -B prefixes are put before
2515 enum path_prefix_priority
2517 PREFIX_PRIORITY_B_OPT,
2518 PREFIX_PRIORITY_LAST
2521 /* Add an entry for PREFIX in PLIST. The PLIST is kept in ascending
2522 order according to PRIORITY. Within each PRIORITY, new entries are
2525 If WARN is nonzero, we will warn if no file is found
2526 through this prefix. WARN should point to an int
2527 which will be set to 1 if this entry is used.
2529 COMPONENT is the value to be passed to update_path.
2531 REQUIRE_MACHINE_SUFFIX is 1 if this prefix can't be used without
2532 the complete value of machine_suffix.
2533 2 means try both machine_suffix and just_machine_suffix. */
2536 add_prefix (struct path_prefix *pprefix, const char *prefix,
2537 const char *component, /* enum prefix_priority */ int priority,
2538 int require_machine_suffix, int *warn, int os_multilib)
2540 struct prefix_list *pl, **prev;
2543 for (prev = &pprefix->plist;
2544 (*prev) != NULL && (*prev)->priority <= priority;
2545 prev = &(*prev)->next)
2548 /* Keep track of the longest prefix. */
2550 prefix = update_path (prefix, component);
2551 len = strlen (prefix);
2552 if (len > pprefix->max_len)
2553 pprefix->max_len = len;
2555 pl = xmalloc (sizeof (struct prefix_list));
2556 pl->prefix = prefix;
2557 pl->require_machine_suffix = require_machine_suffix;
2558 pl->used_flag_ptr = warn;
2559 pl->priority = priority;
2560 pl->os_multilib = os_multilib;
2564 /* Insert after PREV. */
2569 /* Same as add_prefix, but prepending target_system_root to prefix. */
2571 add_sysrooted_prefix (struct path_prefix *pprefix, const char *prefix,
2572 const char *component,
2573 /* enum prefix_priority */ int priority,
2574 int require_machine_suffix, int *warn, int os_multilib)
2576 if (!IS_ABSOLUTE_PATH (prefix))
2579 if (target_system_root)
2581 if (target_sysroot_suffix)
2582 prefix = concat (target_sysroot_suffix, prefix, NULL);
2583 prefix = concat (target_system_root, prefix, NULL);
2585 /* We have to override this because GCC's notion of sysroot
2586 moves along with GCC. */
2590 add_prefix (pprefix, prefix, component, priority,
2591 require_machine_suffix, warn, os_multilib);
2594 /* Execute the command specified by the arguments on the current line of spec.
2595 When using pipes, this includes several piped-together commands
2596 with `|' between them.
2598 Return 0 if successful, -1 if failed. */
2604 int n_commands; /* # of command. */
2608 const char *prog; /* program name. */
2609 const char **argv; /* vector of args. */
2610 int pid; /* pid of process for this command. */
2613 struct command *commands; /* each command buffer with above info. */
2615 if (processing_spec_function)
2618 /* Count # of piped commands. */
2619 for (n_commands = 1, i = 0; i < argbuf_index; i++)
2620 if (strcmp (argbuf[i], "|") == 0)
2623 /* Get storage for each command. */
2624 commands = alloca (n_commands * sizeof (struct command));
2626 /* Split argbuf into its separate piped processes,
2627 and record info about each one.
2628 Also search for the programs that are to be run. */
2630 commands[0].prog = argbuf[0]; /* first command. */
2631 commands[0].argv = &argbuf[0];
2632 string = find_a_file (&exec_prefixes, commands[0].prog, X_OK, 0);
2635 commands[0].argv[0] = string;
2637 for (n_commands = 1, i = 0; i < argbuf_index; i++)
2638 if (strcmp (argbuf[i], "|") == 0)
2639 { /* each command. */
2640 #if defined (__MSDOS__) || defined (OS2) || defined (VMS)
2641 fatal ("-pipe not supported");
2643 argbuf[i] = 0; /* termination of command args. */
2644 commands[n_commands].prog = argbuf[i + 1];
2645 commands[n_commands].argv = &argbuf[i + 1];
2646 string = find_a_file (&exec_prefixes, commands[n_commands].prog,
2649 commands[n_commands].argv[0] = string;
2653 argbuf[argbuf_index] = 0;
2655 /* If -v, print what we are about to do, and maybe query. */
2659 /* For help listings, put a blank line between sub-processes. */
2660 if (print_help_list)
2661 fputc ('\n', stderr);
2663 /* Print each piped command as a separate line. */
2664 for (i = 0; i < n_commands; i++)
2666 const char *const *j;
2668 if (verbose_only_flag)
2670 for (j = commands[i].argv; *j; j++)
2673 fprintf (stderr, " \"");
2674 for (p = *j; *p; ++p)
2676 if (*p == '"' || *p == '\\' || *p == '$')
2677 fputc ('\\', stderr);
2680 fputc ('"', stderr);
2684 for (j = commands[i].argv; *j; j++)
2685 fprintf (stderr, " %s", *j);
2687 /* Print a pipe symbol after all but the last command. */
2688 if (i + 1 != n_commands)
2689 fprintf (stderr, " |");
2690 fprintf (stderr, "\n");
2693 if (verbose_only_flag != 0)
2695 /* verbose_only_flag should act as if the spec was
2696 executed, so increment execution_count before
2697 returning. This prevents spurious warnings about
2698 unused linker input files, etc. */
2703 notice ("\nGo ahead? (y or n) ");
2707 while (getchar () != '\n')
2710 if (i != 'y' && i != 'Y')
2715 #ifdef ENABLE_VALGRIND_CHECKING
2716 /* Run the each command through valgrind. To simplify prepending the
2717 path to valgrind and the option "-q" (for quiet operation unless
2718 something triggers), we allocate a separate argv array. */
2720 for (i = 0; i < n_commands; i++)
2726 for (argc = 0; commands[i].argv[argc] != NULL; argc++)
2729 argv = alloca ((argc + 3) * sizeof (char *));
2731 argv[0] = VALGRIND_PATH;
2733 for (j = 2; j < argc + 2; j++)
2734 argv[j] = commands[i].argv[j - 2];
2737 commands[i].argv = argv;
2738 commands[i].prog = argv[0];
2742 /* Run each piped subprocess. */
2744 for (i = 0; i < n_commands; i++)
2746 char *errmsg_fmt, *errmsg_arg;
2747 const char *string = commands[i].argv[0];
2749 /* For some bizarre reason, the second argument of execvp() is
2750 char *const *, not const char *const *. */
2751 commands[i].pid = pexecute (string, (char *const *) commands[i].argv,
2752 programname, temp_filename,
2753 &errmsg_fmt, &errmsg_arg,
2754 ((i == 0 ? PEXECUTE_FIRST : 0)
2755 | (i + 1 == n_commands ? PEXECUTE_LAST : 0)
2756 | (string == commands[i].prog
2757 ? PEXECUTE_SEARCH : 0)
2758 | (verbose_flag ? PEXECUTE_VERBOSE : 0)));
2760 if (commands[i].pid == -1)
2761 pfatal_pexecute (errmsg_fmt, errmsg_arg);
2763 if (string != commands[i].prog)
2764 free ((void *) string);
2769 /* Wait for all the subprocesses to finish.
2770 We don't care what order they finish in;
2771 we know that N_COMMANDS waits will get them all.
2772 Ignore subprocesses that we don't know about,
2773 since they can be spawned by the process that exec'ed us. */
2777 #ifdef HAVE_GETRUSAGE
2779 double ut = 0.0, st = 0.0;
2782 for (i = 0; i < n_commands;)
2788 pid = pwait (commands[i].pid, &status, 0);
2792 #ifdef HAVE_GETRUSAGE
2795 /* getrusage returns the total resource usage of all children
2796 up to now. Copy the previous values into prus, get the
2797 current statistics, then take the difference. */
2800 getrusage (RUSAGE_CHILDREN, &rus);
2801 d.tv_sec = rus.ru_utime.tv_sec - prus.ru_utime.tv_sec;
2802 d.tv_usec = rus.ru_utime.tv_usec - prus.ru_utime.tv_usec;
2803 ut = (double) d.tv_sec + (double) d.tv_usec / 1.0e6;
2805 d.tv_sec = rus.ru_stime.tv_sec - prus.ru_stime.tv_sec;
2806 d.tv_usec = rus.ru_stime.tv_usec - prus.ru_stime.tv_usec;
2807 st = (double) d.tv_sec + (double) d.tv_usec / 1.0e6;
2811 for (j = 0; j < n_commands; j++)
2812 if (commands[j].pid == pid)
2815 if (WIFSIGNALED (status))
2818 /* SIGPIPE is a special case. It happens in -pipe mode
2819 when the compiler dies before the preprocessor is
2820 done, or the assembler dies before the compiler is
2821 done. There's generally been an error already, and
2822 this is just fallout. So don't generate another error
2823 unless we would otherwise have succeeded. */
2824 if (WTERMSIG (status) == SIGPIPE
2825 && (signal_count || greatest_status >= MIN_FATAL_STATUS))
2830 Internal error: %s (program %s)\n\
2831 Please submit a full bug report.\n\
2832 See %s for instructions.",
2833 strsignal (WTERMSIG (status)), commands[j].prog,
2838 else if (WIFEXITED (status)
2839 && WEXITSTATUS (status) >= MIN_FATAL_STATUS)
2841 if (WEXITSTATUS (status) > greatest_status)
2842 greatest_status = WEXITSTATUS (status);
2845 #ifdef HAVE_GETRUSAGE
2846 if (report_times && ut + st != 0)
2847 notice ("# %s %.2f %.2f\n", commands[j].prog, ut, st);
2856 /* Find all the switches given to us
2857 and make a vector describing them.
2858 The elements of the vector are strings, one per switch given.
2859 If a switch uses following arguments, then the `part1' field
2860 is the switch itself and the `args' field
2861 is a null-terminated vector containing the following arguments.
2862 The `live_cond' field is:
2864 1 if the switch is true in a conditional spec,
2865 -1 if false (overridden by a later switch)
2866 -2 if this switch should be ignored (used in %<S)
2867 The `validated' field is nonzero if any spec has looked at this switch;
2868 if it remains zero at the end of the run, it must be meaningless. */
2871 #define SWITCH_FALSE -1
2872 #define SWITCH_IGNORE -2
2873 #define SWITCH_LIVE 1
2880 unsigned char validated;
2881 unsigned char ordering;
2884 static struct switchstr *switches;
2886 static int n_switches;
2891 const char *language;
2894 /* Also a vector of input files specified. */
2896 static struct infile *infiles;
2900 /* True if multiple input files are being compiled to a single
2903 static bool combine_inputs;
2905 /* This counts the number of libraries added by lang_specific_driver, so that
2906 we can tell if there were any user supplied any files or libraries. */
2908 static int added_libraries;
2910 /* And a vector of corresponding output files is made up later. */
2912 const char **outfiles;
2914 /* Used to track if none of the -B paths are used. */
2917 /* Gives value to pass as "warn" to add_prefix for standard prefixes. */
2918 static int *warn_std_ptr = 0;
2920 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2922 /* Convert NAME to a new name if it is the standard suffix. DO_EXE
2923 is true if we should look for an executable suffix. DO_OBJ
2924 is true if we should look for an object suffix. */
2927 convert_filename (const char *name, int do_exe ATTRIBUTE_UNUSED,
2928 int do_obj ATTRIBUTE_UNUSED)
2930 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2938 len = strlen (name);
2940 #ifdef HAVE_TARGET_OBJECT_SUFFIX
2941 /* Convert x.o to x.obj if TARGET_OBJECT_SUFFIX is ".obj". */
2942 if (do_obj && len > 2
2943 && name[len - 2] == '.'
2944 && name[len - 1] == 'o')
2946 obstack_grow (&obstack, name, len - 2);
2947 obstack_grow0 (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX));
2948 name = obstack_finish (&obstack);
2952 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2953 /* If there is no filetype, make it the executable suffix (which includes
2954 the "."). But don't get confused if we have just "-o". */
2955 if (! do_exe || TARGET_EXECUTABLE_SUFFIX[0] == 0 || (len == 2 && name[0] == '-'))
2958 for (i = len - 1; i >= 0; i--)
2959 if (IS_DIR_SEPARATOR (name[i]))
2962 for (i++; i < len; i++)
2966 obstack_grow (&obstack, name, len);
2967 obstack_grow0 (&obstack, TARGET_EXECUTABLE_SUFFIX,
2968 strlen (TARGET_EXECUTABLE_SUFFIX));
2969 name = obstack_finish (&obstack);
2976 /* Display the command line switches accepted by gcc. */
2980 printf (_("Usage: %s [options] file...\n"), programname);
2981 fputs (_("Options:\n"), stdout);
2983 fputs (_(" -pass-exit-codes Exit with highest error code from a phase\n"), stdout);
2984 fputs (_(" --help Display this information\n"), stdout);
2985 fputs (_(" --target-help Display target specific command line options\n"), stdout);
2987 fputs (_(" (Use '-v --help' to display command line options of sub-processes)\n"), stdout);
2988 fputs (_(" -dumpspecs Display all of the built in spec strings\n"), stdout);
2989 fputs (_(" -dumpversion Display the version of the compiler\n"), stdout);
2990 fputs (_(" -dumpmachine Display the compiler's target processor\n"), stdout);
2991 fputs (_(" -print-search-dirs Display the directories in the compiler's search path\n"), stdout);
2992 fputs (_(" -print-libgcc-file-name Display the name of the compiler's companion library\n"), stdout);
2993 fputs (_(" -print-file-name=<lib> Display the full path to library <lib>\n"), stdout);
2994 fputs (_(" -print-prog-name=<prog> Display the full path to compiler component <prog>\n"), stdout);
2995 fputs (_(" -print-multi-directory Display the root directory for versions of libgcc\n"), stdout);
2997 -print-multi-lib Display the mapping between command line options and\n\
2998 multiple library search directories\n"), stdout);
2999 fputs (_(" -print-multi-os-directory Display the relative path to OS libraries\n"), stdout);
3000 fputs (_(" -Wa,<options> Pass comma-separated <options> on to the assembler\n"), stdout);
3001 fputs (_(" -Wp,<options> Pass comma-separated <options> on to the preprocessor\n"), stdout);
3002 fputs (_(" -Wl,<options> Pass comma-separated <options> on to the linker\n"), stdout);
3003 fputs (_(" -Xassembler <arg> Pass <arg> on to the assembler\n"), stdout);
3004 fputs (_(" -Xpreprocessor <arg> Pass <arg> on to the preprocessor\n"), stdout);
3005 fputs (_(" -Xlinker <arg> Pass <arg> on to the linker\n"), stdout);
3006 fputs (_(" -save-temps Do not delete intermediate files\n"), stdout);
3007 fputs (_(" -pipe Use pipes rather than intermediate files\n"), stdout);
3008 fputs (_(" -time Time the execution of each subprocess\n"), stdout);
3009 fputs (_(" -specs=<file> Override built-in specs with the contents of <file>\n"), stdout);
3010 fputs (_(" -std=<standard> Assume that the input sources are for <standard>\n"), stdout);
3011 fputs (_(" -B <directory> Add <directory> to the compiler's search paths\n"), stdout);
3012 fputs (_(" -b <machine> Run gcc for target <machine>, if installed\n"), stdout);
3013 fputs (_(" -V <version> Run gcc version number <version>, if installed\n"), stdout);
3014 fputs (_(" -v Display the programs invoked by the compiler\n"), stdout);
3015 fputs (_(" -### Like -v but options quoted and commands not executed\n"), stdout);
3016 fputs (_(" -E Preprocess only; do not compile, assemble or link\n"), stdout);
3017 fputs (_(" -S Compile only; do not assemble or link\n"), stdout);
3018 fputs (_(" -c Compile and assemble, but do not link\n"), stdout);
3019 fputs (_(" -o <file> Place the output into <file>\n"), stdout);
3021 -x <language> Specify the language of the following input files\n\
3022 Permissible languages include: c c++ assembler none\n\
3023 'none' means revert to the default behavior of\n\
3024 guessing the language based on the file's extension\n\
3028 \nOptions starting with -g, -f, -m, -O, -W, or --param are automatically\n\
3029 passed on to the various sub-processes invoked by %s. In order to pass\n\
3030 other options on to these processes the -W<letter> options must be used.\n\
3033 /* The rest of the options are displayed by invocations of the various
3038 add_preprocessor_option (const char *option, int len)
3040 n_preprocessor_options++;
3042 if (! preprocessor_options)
3043 preprocessor_options = xmalloc (n_preprocessor_options * sizeof (char *));
3045 preprocessor_options = xrealloc (preprocessor_options,
3046 n_preprocessor_options * sizeof (char *));
3048 preprocessor_options [n_preprocessor_options - 1] =
3049 save_string (option, len);
3053 add_assembler_option (const char *option, int len)
3055 n_assembler_options++;
3057 if (! assembler_options)
3058 assembler_options = xmalloc (n_assembler_options * sizeof (char *));
3060 assembler_options = xrealloc (assembler_options,
3061 n_assembler_options * sizeof (char *));
3063 assembler_options [n_assembler_options - 1] = save_string (option, len);
3067 add_linker_option (const char *option, int len)
3071 if (! linker_options)
3072 linker_options = xmalloc (n_linker_options * sizeof (char *));
3074 linker_options = xrealloc (linker_options,
3075 n_linker_options * sizeof (char *));
3077 linker_options [n_linker_options - 1] = save_string (option, len);
3080 /* Create the vector `switches' and its contents.
3081 Store its length in `n_switches'. */
3084 process_command (int argc, const char **argv)
3089 const char *spec_lang = 0;
3090 int last_language_n_infiles;
3093 int lang_n_infiles = 0;
3094 #ifdef MODIFY_TARGET_NAME
3095 int is_modify_target_name;
3099 GET_ENVIRONMENT (gcc_exec_prefix, "GCC_EXEC_PREFIX");
3103 added_libraries = 0;
3105 /* Figure compiler version from version string. */
3107 compiler_version = temp1 = xstrdup (version_string);
3109 for (; *temp1; ++temp1)
3118 /* If there is a -V or -b option (or both), process it now, before
3119 trying to interpret the rest of the command line. */
3120 if (argc > 1 && argv[1][0] == '-'
3121 && (argv[1][1] == 'V' || argv[1][1] == 'b'))
3123 const char *new_version = DEFAULT_TARGET_VERSION;
3124 const char *new_machine = DEFAULT_TARGET_MACHINE;
3125 const char *progname = argv[0];
3130 while (argc > 1 && argv[1][0] == '-'
3131 && (argv[1][1] == 'V' || argv[1][1] == 'b'))
3133 char opt = argv[1][1];
3135 if (argv[1][2] != '\0')
3148 fatal ("`-%c' option must have argument", opt);
3155 for (baselen = strlen (progname); baselen > 0; baselen--)
3156 if (IS_DIR_SEPARATOR (progname[baselen-1]))
3158 new_argv0 = xmemdup (progname, baselen,
3159 baselen + concat_length (new_version, new_machine,
3160 "-gcc-", NULL) + 1);
3161 strcpy (new_argv0 + baselen, new_machine);
3162 strcat (new_argv0, "-gcc-");
3163 strcat (new_argv0, new_version);
3165 new_argv = xmemdup (argv, (argc + 1) * sizeof (argv[0]),
3166 (argc + 1) * sizeof (argv[0]));
3167 new_argv[0] = new_argv0;
3169 execvp (new_argv0, new_argv);
3170 fatal ("couldn't run `%s': %s", new_argv0, xstrerror (errno));
3173 /* Set up the default search paths. If there is no GCC_EXEC_PREFIX,
3174 see if we can create it from the pathname specified in argv[0]. */
3176 gcc_libexec_prefix = standard_libexec_prefix;
3178 /* FIXME: make_relative_prefix doesn't yet work for VMS. */
3179 if (!gcc_exec_prefix)
3181 gcc_exec_prefix = make_relative_prefix (argv[0], standard_bindir_prefix,
3182 standard_exec_prefix);
3183 gcc_libexec_prefix = make_relative_prefix (argv[0],
3184 standard_bindir_prefix,
3185 standard_libexec_prefix);
3186 if (gcc_exec_prefix)
3187 putenv (concat ("GCC_EXEC_PREFIX=", gcc_exec_prefix, NULL));
3190 gcc_libexec_prefix = make_relative_prefix (gcc_exec_prefix,
3191 standard_exec_prefix,
3192 standard_libexec_prefix);
3196 if (gcc_exec_prefix)
3198 int len = strlen (gcc_exec_prefix);
3200 if (len > (int) sizeof ("/lib/gcc/") - 1
3201 && (IS_DIR_SEPARATOR (gcc_exec_prefix[len-1])))
3203 temp = gcc_exec_prefix + len - sizeof ("/lib/gcc/") + 1;
3204 if (IS_DIR_SEPARATOR (*temp)
3205 && strncmp (temp + 1, "lib", 3) == 0
3206 && IS_DIR_SEPARATOR (temp[4])
3207 && strncmp (temp + 5, "gcc", 3) == 0)
3208 len -= sizeof ("/lib/gcc/") - 1;
3211 set_std_prefix (gcc_exec_prefix, len);
3212 add_prefix (&exec_prefixes, gcc_libexec_prefix, "GCC",
3213 PREFIX_PRIORITY_LAST, 0, NULL, 0);
3214 add_prefix (&startfile_prefixes, gcc_exec_prefix, "GCC",
3215 PREFIX_PRIORITY_LAST, 0, NULL, 0);
3218 /* COMPILER_PATH and LIBRARY_PATH have values
3219 that are lists of directory names with colons. */
3221 GET_ENVIRONMENT (temp, "COMPILER_PATH");
3224 const char *startp, *endp;
3225 char *nstore = alloca (strlen (temp) + 3);
3227 startp = endp = temp;
3230 if (*endp == PATH_SEPARATOR || *endp == 0)
3232 strncpy (nstore, startp, endp - startp);
3234 strcpy (nstore, concat (".", dir_separator_str, NULL));
3235 else if (!IS_DIR_SEPARATOR (endp[-1]))
3237 nstore[endp - startp] = DIR_SEPARATOR;
3238 nstore[endp - startp + 1] = 0;
3241 nstore[endp - startp] = 0;
3242 add_prefix (&exec_prefixes, nstore, 0,
3243 PREFIX_PRIORITY_LAST, 0, NULL, 0);
3244 add_prefix (&include_prefixes,
3245 concat (nstore, "include", NULL),
3246 0, PREFIX_PRIORITY_LAST, 0, NULL, 0);
3249 endp = startp = endp + 1;
3256 GET_ENVIRONMENT (temp, LIBRARY_PATH_ENV);
3257 if (temp && *cross_compile == '0')
3259 const char *startp, *endp;
3260 char *nstore = alloca (strlen (temp) + 3);
3262 startp = endp = temp;
3265 if (*endp == PATH_SEPARATOR || *endp == 0)
3267 strncpy (nstore, startp, endp - startp);
3269 strcpy (nstore, concat (".", dir_separator_str, NULL));
3270 else if (!IS_DIR_SEPARATOR (endp[-1]))
3272 nstore[endp - startp] = DIR_SEPARATOR;
3273 nstore[endp - startp + 1] = 0;
3276 nstore[endp - startp] = 0;
3277 add_prefix (&startfile_prefixes, nstore, NULL,
3278 PREFIX_PRIORITY_LAST, 0, NULL, 1);
3281 endp = startp = endp + 1;
3288 /* Use LPATH like LIBRARY_PATH (for the CMU build program). */
3289 GET_ENVIRONMENT (temp, "LPATH");
3290 if (temp && *cross_compile == '0')
3292 const char *startp, *endp;
3293 char *nstore = alloca (strlen (temp) + 3);
3295 startp = endp = temp;
3298 if (*endp == PATH_SEPARATOR || *endp == 0)
3300 strncpy (nstore, startp, endp - startp);
3302 strcpy (nstore, concat (".", dir_separator_str, NULL));
3303 else if (!IS_DIR_SEPARATOR (endp[-1]))
3305 nstore[endp - startp] = DIR_SEPARATOR;
3306 nstore[endp - startp + 1] = 0;
3309 nstore[endp - startp] = 0;
3310 add_prefix (&startfile_prefixes, nstore, NULL,
3311 PREFIX_PRIORITY_LAST, 0, NULL, 1);
3314 endp = startp = endp + 1;
3321 /* Convert new-style -- options to old-style. */
3322 translate_options (&argc, (const char *const **) &argv);
3324 /* Do language-specific adjustment/addition of flags. */
3325 lang_specific_driver (&argc, (const char *const **) &argv, &added_libraries);
3327 /* Scan argv twice. Here, the first time, just count how many switches
3328 there will be in their vector, and how many input files in theirs.
3329 Here we also parse the switches that cc itself uses (e.g. -v). */
3331 for (i = 1; i < argc; i++)
3333 if (! strcmp (argv[i], "-dumpspecs"))
3335 struct spec_list *sl;
3337 for (sl = specs; sl; sl = sl->next)
3338 printf ("*%s:\n%s\n\n", sl->name, *(sl->ptr_spec));
3339 if (link_command_spec)
3340 printf ("*link_command:\n%s\n\n", link_command_spec);
3343 else if (! strcmp (argv[i], "-dumpversion"))
3345 printf ("%s\n", spec_version);
3348 else if (! strcmp (argv[i], "-dumpmachine"))
3350 printf ("%s\n", spec_machine);
3353 else if (strcmp (argv[i], "-fversion") == 0)
3355 /* translate_options () has turned --version into -fversion. */
3356 printf (_("%s (GCC) %s\n"), programname, version_string);
3357 printf ("Copyright %s 2004 Free Software Foundation, Inc.\n",
3359 fputs (_("This is free software; see the source for copying conditions. There is NO\n\
3360 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\n"),
3364 else if (strcmp (argv[i], "-fhelp") == 0)
3366 /* translate_options () has turned --help into -fhelp. */
3367 print_help_list = 1;
3369 /* We will be passing a dummy file on to the sub-processes. */
3373 /* CPP driver cannot obtain switch from cc1_options. */
3375 add_preprocessor_option ("--help", 6);
3376 add_assembler_option ("--help", 6);
3377 add_linker_option ("--help", 6);
3379 else if (strcmp (argv[i], "-ftarget-help") == 0)
3381 /* translate_options() has turned --target-help into -ftarget-help. */
3382 target_help_flag = 1;
3384 /* We will be passing a dummy file on to the sub-processes. */
3388 /* CPP driver cannot obtain switch from cc1_options. */
3390 add_preprocessor_option ("--target-help", 13);
3391 add_assembler_option ("--target-help", 13);
3392 add_linker_option ("--target-help", 13);
3394 else if (! strcmp (argv[i], "-pass-exit-codes"))
3396 pass_exit_codes = 1;
3399 else if (! strcmp (argv[i], "-print-search-dirs"))
3400 print_search_dirs = 1;
3401 else if (! strcmp (argv[i], "-print-libgcc-file-name"))
3402 print_file_name = "libgcc.a";
3403 else if (! strncmp (argv[i], "-print-file-name=", 17))
3404 print_file_name = argv[i] + 17;
3405 else if (! strncmp (argv[i], "-print-prog-name=", 17))
3406 print_prog_name = argv[i] + 17;
3407 else if (! strcmp (argv[i], "-print-multi-lib"))
3408 print_multi_lib = 1;
3409 else if (! strcmp (argv[i], "-print-multi-directory"))
3410 print_multi_directory = 1;
3411 else if (! strcmp (argv[i], "-print-multi-os-directory"))
3412 print_multi_os_directory = 1;
3413 else if (! strncmp (argv[i], "-Wa,", 4))
3416 /* Pass the rest of this option to the assembler. */
3418 /* Split the argument at commas. */
3420 for (j = 4; argv[i][j]; j++)
3421 if (argv[i][j] == ',')
3423 add_assembler_option (argv[i] + prev, j - prev);
3427 /* Record the part after the last comma. */
3428 add_assembler_option (argv[i] + prev, j - prev);
3430 else if (! strncmp (argv[i], "-Wp,", 4))
3433 /* Pass the rest of this option to the preprocessor. */
3435 /* Split the argument at commas. */
3437 for (j = 4; argv[i][j]; j++)
3438 if (argv[i][j] == ',')
3440 add_preprocessor_option (argv[i] + prev, j - prev);
3444 /* Record the part after the last comma. */
3445 add_preprocessor_option (argv[i] + prev, j - prev);
3447 else if (argv[i][0] == '+' && argv[i][1] == 'e')
3448 /* The +e options to the C++ front-end. */
3450 else if (strncmp (argv[i], "-Wl,", 4) == 0)
3453 /* Split the argument at commas. */
3454 for (j = 3; argv[i][j]; j++)
3455 n_infiles += (argv[i][j] == ',');
3457 else if (strcmp (argv[i], "-Xlinker") == 0)
3460 fatal ("argument to `-Xlinker' is missing");
3465 else if (strcmp (argv[i], "-Xpreprocessor") == 0)
3468 fatal ("argument to `-Xpreprocessor' is missing");
3470 add_preprocessor_option (argv[i+1], strlen (argv[i+1]));
3472 else if (strcmp (argv[i], "-Xassembler") == 0)
3475 fatal ("argument to `-Xassembler' is missing");
3477 add_assembler_option (argv[i+1], strlen (argv[i+1]));
3479 else if (strcmp (argv[i], "-l") == 0)
3482 fatal ("argument to `-l' is missing");
3487 else if (strncmp (argv[i], "-l", 2) == 0)
3489 else if (strcmp (argv[i], "-save-temps") == 0)
3491 save_temps_flag = 1;
3494 else if (strcmp (argv[i], "-specs") == 0)
3496 struct user_specs *user = xmalloc (sizeof (struct user_specs));
3498 fatal ("argument to `-specs' is missing");
3500 user->next = (struct user_specs *) 0;
3501 user->filename = argv[i];
3502 if (user_specs_tail)
3503 user_specs_tail->next = user;
3505 user_specs_head = user;
3506 user_specs_tail = user;
3508 else if (strncmp (argv[i], "-specs=", 7) == 0)
3510 struct user_specs *user = xmalloc (sizeof (struct user_specs));
3511 if (strlen (argv[i]) == 7)
3512 fatal ("argument to `-specs=' is missing");
3514 user->next = (struct user_specs *) 0;
3515 user->filename = argv[i] + 7;
3516 if (user_specs_tail)
3517 user_specs_tail->next = user;
3519 user_specs_head = user;
3520 user_specs_tail = user;
3522 else if (strcmp (argv[i], "-time") == 0)
3524 else if (strcmp (argv[i], "-pipe") == 0)
3526 /* -pipe has to go into the switches array as well as
3531 else if (strcmp (argv[i], "-###") == 0)
3533 /* This is similar to -v except that there is no execution
3534 of the commands and the echoed arguments are quoted. It
3535 is intended for use in shell scripts to capture the
3536 driver-generated command line. */
3537 verbose_only_flag++;
3540 else if (argv[i][0] == '-' && argv[i][1] != 0)
3542 const char *p = &argv[i][1];
3549 fatal ("`-%c' must come at the start of the command line", c);
3557 if (p[1] == 0 && i + 1 == argc)
3558 fatal ("argument to `-B' is missing");
3564 len = strlen (value);
3566 /* Catch the case where the user has forgotten to append a
3567 directory separator to the path. Note, they may be using
3568 -B to add an executable name prefix, eg "i386-elf-", in
3569 order to distinguish between multiple installations of
3570 GCC in the same directory. Hence we must check to see
3571 if appending a directory separator actually makes a
3572 valid directory name. */
3573 if (! IS_DIR_SEPARATOR (value [len - 1])
3574 && is_directory (value, "", 0))
3576 char *tmp = xmalloc (len + 2);
3577 strcpy (tmp, value);
3578 tmp[len] = DIR_SEPARATOR;
3583 /* As a kludge, if the arg is "[foo/]stageN/", just
3584 add "[foo/]include" to the include prefix. */
3587 && (IS_DIR_SEPARATOR (value[len - 8]))))
3588 && strncmp (value + len - 7, "stage", 5) == 0
3589 && ISDIGIT (value[len - 2])
3590 && (IS_DIR_SEPARATOR (value[len - 1])))
3593 add_prefix (&include_prefixes, "include", NULL,
3594 PREFIX_PRIORITY_B_OPT, 0, NULL, 0);
3597 char * string = xmalloc (len + 1);
3599 strncpy (string, value, len - 7);
3600 strcpy (string + len - 7, "include");
3601 add_prefix (&include_prefixes, string, NULL,
3602 PREFIX_PRIORITY_B_OPT, 0, NULL, 0);
3606 add_prefix (&exec_prefixes, value, NULL,
3607 PREFIX_PRIORITY_B_OPT, 0, &warn_B, 0);
3608 add_prefix (&startfile_prefixes, value, NULL,
3609 PREFIX_PRIORITY_B_OPT, 0, &warn_B, 0);
3610 add_prefix (&include_prefixes, concat (value, "include", NULL),
3611 NULL, PREFIX_PRIORITY_B_OPT, 0, NULL, 0);
3616 case 'v': /* Print our subcommands and print versions. */
3618 /* If they do anything other than exactly `-v', don't set
3619 verbose_flag; rather, continue on to give the error. */
3637 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3642 /* Forward scan, just in case -S or -c is specified
3649 if (argv[j][0] == '-')
3651 if (SWITCH_CURTAILS_COMPILATION (argv[j][1])
3657 else if ((skip = SWITCH_TAKES_ARG (argv[j][1])))
3658 j += skip - (argv[j][2] != 0);
3659 else if ((skip = WORD_SWITCH_TAKES_ARG (argv[j] + 1)))
3666 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX) || defined(HAVE_TARGET_OBJECT_SUFFIX)
3668 argv[i + 1] = convert_filename (argv[i + 1], ! have_c, 0);
3670 argv[i] = convert_filename (argv[i], ! have_c, 0);
3677 #ifdef MODIFY_TARGET_NAME
3678 is_modify_target_name = 0;
3680 for (j = 0; j < ARRAY_SIZE (modify_target); j++)
3681 if (! strcmp (argv[i], modify_target[j].sw))
3683 char *new_name = xmalloc (strlen (modify_target[j].str)
3684 + strlen (spec_machine));
3687 int made_addition = 0;
3689 is_modify_target_name = 1;
3690 for (p = spec_machine, q = new_name; *p != 0; )
3692 if (modify_target[j].add_del == DELETE
3693 && (! strncmp (q, modify_target[j].str,
3694 strlen (modify_target[j].str))))
3695 p += strlen (modify_target[j].str);
3696 else if (modify_target[j].add_del == ADD
3697 && ! made_addition && *p == '-')
3699 for (r = modify_target[j].str; *r != 0; )
3707 spec_machine = new_name;
3710 if (is_modify_target_name)
3716 if (SWITCH_TAKES_ARG (c) > (p[1] != 0))
3717 i += SWITCH_TAKES_ARG (c) - (p[1] != 0);
3718 else if (WORD_SWITCH_TAKES_ARG (p))
3719 i += WORD_SWITCH_TAKES_ARG (p);
3729 combine_inputs = (have_c && have_o && lang_n_infiles > 1);
3731 if ((save_temps_flag || report_times) && use_pipes)
3733 /* -save-temps overrides -pipe, so that temp files are produced */
3734 if (save_temps_flag)
3735 error ("warning: -pipe ignored because -save-temps specified");
3736 /* -time overrides -pipe because we can't get correct stats when
3737 multiple children are running at once. */
3738 else if (report_times)
3739 error ("warning: -pipe ignored because -time specified");
3744 /* Set up the search paths before we go looking for config files. */
3746 /* These come before the md prefixes so that we will find gcc's subcommands
3747 (such as cpp) rather than those of the host system. */
3748 /* Use 2 as fourth arg meaning try just the machine as a suffix,
3749 as well as trying the machine and the version. */
3751 add_prefix (&exec_prefixes, standard_libexec_prefix, "GCC",
3752 PREFIX_PRIORITY_LAST, 1, warn_std_ptr, 0);
3753 add_prefix (&exec_prefixes, standard_libexec_prefix, "BINUTILS",
3754 PREFIX_PRIORITY_LAST, 2, warn_std_ptr, 0);
3755 add_prefix (&exec_prefixes, standard_exec_prefix, "BINUTILS",
3756 PREFIX_PRIORITY_LAST, 2, warn_std_ptr, 0);
3757 add_prefix (&exec_prefixes, standard_exec_prefix_1, "BINUTILS",
3758 PREFIX_PRIORITY_LAST, 2, warn_std_ptr, 0);
3759 add_prefix (&exec_prefixes, standard_exec_prefix_2, "BINUTILS",
3760 PREFIX_PRIORITY_LAST, 2, warn_std_ptr, 0);
3763 add_prefix (&startfile_prefixes, standard_exec_prefix, "BINUTILS",
3764 PREFIX_PRIORITY_LAST, 1, warn_std_ptr, 0);
3765 add_prefix (&startfile_prefixes, standard_exec_prefix_2, "BINUTILS",
3766 PREFIX_PRIORITY_LAST, 1, warn_std_ptr, 0);
3768 tooldir_prefix = concat (tooldir_base_prefix, spec_machine,
3769 dir_separator_str, NULL);
3771 /* If tooldir is relative, base it on exec_prefixes. A relative
3772 tooldir lets us move the installed tree as a unit.
3774 If GCC_EXEC_PREFIX is defined, then we want to add two relative
3775 directories, so that we can search both the user specified directory
3776 and the standard place. */
3778 if (!IS_ABSOLUTE_PATH (tooldir_prefix))
3780 if (gcc_exec_prefix)
3782 char *gcc_exec_tooldir_prefix
3783 = concat (gcc_exec_prefix, spec_machine, dir_separator_str,
3784 spec_version, dir_separator_str, tooldir_prefix, NULL);
3786 add_prefix (&exec_prefixes,
3787 concat (gcc_exec_tooldir_prefix, "bin",
3788 dir_separator_str, NULL),
3789 NULL, PREFIX_PRIORITY_LAST, 0, NULL, 0);
3790 add_prefix (&startfile_prefixes,
3791 concat (gcc_exec_tooldir_prefix, "lib",
3792 dir_separator_str, NULL),
3793 NULL, PREFIX_PRIORITY_LAST, 0, NULL, 1);
3796 tooldir_prefix = concat (standard_exec_prefix, spec_machine,
3797 dir_separator_str, spec_version,
3798 dir_separator_str, tooldir_prefix, NULL);
3801 add_prefix (&exec_prefixes,
3802 concat (tooldir_prefix, "bin", dir_separator_str, NULL),
3803 "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL, 0);
3804 add_prefix (&startfile_prefixes,
3805 concat (tooldir_prefix, "lib", dir_separator_str, NULL),
3806 "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL, 1);
3808 #if defined(TARGET_SYSTEM_ROOT_RELOCATABLE) && !defined(VMS)
3809 /* If the normal TARGET_SYSTEM_ROOT is inside of $exec_prefix,
3810 then consider it to relocate with the rest of the GCC installation
3811 if GCC_EXEC_PREFIX is set.
3812 ``make_relative_prefix'' is not compiled for VMS, so don't call it. */
3813 if (target_system_root && gcc_exec_prefix)
3815 char *tmp_prefix = make_relative_prefix (argv[0],
3816 standard_bindir_prefix,
3817 target_system_root);
3818 if (tmp_prefix && access_check (tmp_prefix, F_OK) == 0)
3820 target_system_root = tmp_prefix;
3821 target_system_root_changed = 1;
3826 /* More prefixes are enabled in main, after we read the specs file
3827 and determine whether this is cross-compilation or not. */
3829 /* Then create the space for the vectors and scan again. */
3831 switches = xmalloc ((n_switches + 1) * sizeof (struct switchstr));
3832 infiles = xmalloc ((n_infiles + 1) * sizeof (struct infile));
3835 last_language_n_infiles = -1;
3837 /* This, time, copy the text of each switch and store a pointer
3838 to the copy in the vector of switches.
3839 Store all the infiles in their vector. */
3841 for (i = 1; i < argc; i++)
3843 /* Just skip the switches that were handled by the preceding loop. */
3844 #ifdef MODIFY_TARGET_NAME
3845 is_modify_target_name = 0;
3847 for (j = 0; j < ARRAY_SIZE (modify_target); j++)
3848 if (! strcmp (argv[i], modify_target[j].sw))
3849 is_modify_target_name = 1;
3851 if (is_modify_target_name)
3855 if (! strncmp (argv[i], "-Wa,", 4))
3857 else if (! strncmp (argv[i], "-Wp,", 4))
3859 else if (! strcmp (argv[i], "-pass-exit-codes"))
3861 else if (! strcmp (argv[i], "-print-search-dirs"))
3863 else if (! strcmp (argv[i], "-print-libgcc-file-name"))
3865 else if (! strncmp (argv[i], "-print-file-name=", 17))
3867 else if (! strncmp (argv[i], "-print-prog-name=", 17))
3869 else if (! strcmp (argv[i], "-print-multi-lib"))
3871 else if (! strcmp (argv[i], "-print-multi-directory"))
3873 else if (! strcmp (argv[i], "-print-multi-os-directory"))
3875 else if (! strcmp (argv[i], "-ftarget-help"))
3877 else if (! strcmp (argv[i], "-fhelp"))
3879 else if (argv[i][0] == '+' && argv[i][1] == 'e')
3881 /* Compensate for the +e options to the C++ front-end;
3882 they're there simply for cfront call-compatibility. We do
3883 some magic in default_compilers to pass them down properly.
3884 Note we deliberately start at the `+' here, to avoid passing
3885 -e0 or -e1 down into the linker. */
3886 switches[n_switches].part1 = &argv[i][0];
3887 switches[n_switches].args = 0;
3888 switches[n_switches].live_cond = SWITCH_OK;
3889 switches[n_switches].validated = 0;
3892 else if (strncmp (argv[i], "-Wl,", 4) == 0)
3895 /* Split the argument at commas. */
3897 for (j = 4; argv[i][j]; j++)
3898 if (argv[i][j] == ',')
3900 infiles[n_infiles].language = "*";
3901 infiles[n_infiles++].name
3902 = save_string (argv[i] + prev, j - prev);
3905 /* Record the part after the last comma. */
3906 infiles[n_infiles].language = "*";
3907 infiles[n_infiles++].name = argv[i] + prev;
3909 else if (strcmp (argv[i], "-Xlinker") == 0)
3911 infiles[n_infiles].language = "*";
3912 infiles[n_infiles++].name = argv[++i];
3914 else if (strcmp (argv[i], "-Xassembler") == 0)
3916 infiles[n_infiles].language = "*";
3917 infiles[n_infiles++].name = argv[++i];
3919 else if (strcmp (argv[i], "-Xpreprocessor") == 0)
3921 infiles[n_infiles].language = "*";
3922 infiles[n_infiles++].name = argv[++i];
3924 else if (strcmp (argv[i], "-l") == 0)
3925 { /* POSIX allows separation of -l and the lib arg;
3926 canonicalize by concatenating -l with its arg */
3927 infiles[n_infiles].language = "*";
3928 infiles[n_infiles++].name = concat ("-l", argv[++i], NULL);
3930 else if (strncmp (argv[i], "-l", 2) == 0)
3932 infiles[n_infiles].language = "*";
3933 infiles[n_infiles++].name = argv[i];
3935 else if (strcmp (argv[i], "-specs") == 0)
3937 else if (strncmp (argv[i], "-specs=", 7) == 0)
3939 else if (strcmp (argv[i], "-time") == 0)
3941 else if (strcmp (argv[i], "-###") == 0)
3943 else if (argv[i][0] == '-' && argv[i][1] != 0)
3945 const char *p = &argv[i][1];
3950 if (p[1] == 0 && i + 1 == argc)
3951 fatal ("argument to `-x' is missing");
3953 spec_lang = argv[++i];
3956 if (! strcmp (spec_lang, "none"))
3957 /* Suppress the warning if -xnone comes after the last input
3958 file, because alternate command interfaces like g++ might
3959 find it useful to place -xnone after each input file. */
3962 last_language_n_infiles = n_infiles;
3965 switches[n_switches].part1 = p;
3966 /* Deal with option arguments in separate argv elements. */
3967 if ((SWITCH_TAKES_ARG (c) > (p[1] != 0))
3968 || WORD_SWITCH_TAKES_ARG (p))
3971 int n_args = WORD_SWITCH_TAKES_ARG (p);
3975 /* Count only the option arguments in separate argv elements. */
3976 n_args = SWITCH_TAKES_ARG (c) - (p[1] != 0);
3978 if (i + n_args >= argc)
3979 fatal ("argument to `-%s' is missing", p);
3980 switches[n_switches].args
3981 = xmalloc ((n_args + 1) * sizeof(const char *));
3983 switches[n_switches].args[j++] = argv[++i];
3984 /* Null-terminate the vector. */
3985 switches[n_switches].args[j] = 0;
3987 else if (strchr (switches_need_spaces, c))
3989 /* On some systems, ld cannot handle some options without
3990 a space. So split the option from its argument. */
3991 char *part1 = xmalloc (2);
3995 switches[n_switches].part1 = part1;
3996 switches[n_switches].args = xmalloc (2 * sizeof (const char *));
3997 switches[n_switches].args[0] = xstrdup (p+1);
3998 switches[n_switches].args[1] = 0;
4001 switches[n_switches].args = 0;
4003 switches[n_switches].live_cond = SWITCH_OK;
4004 switches[n_switches].validated = 0;
4005 switches[n_switches].ordering = 0;
4006 /* These are always valid, since gcc.c itself understands them. */
4007 if (!strcmp (p, "save-temps")
4008 || !strcmp (p, "static-libgcc")
4009 || !strcmp (p, "shared-libgcc")
4010 || !strcmp (p, "pipe"))
4011 switches[n_switches].validated = 1;
4014 char ch = switches[n_switches].part1[0];
4016 switches[n_switches].validated = 1;
4022 #ifdef HAVE_TARGET_OBJECT_SUFFIX
4023 argv[i] = convert_filename (argv[i], 0, access (argv[i], F_OK));
4026 if (strcmp (argv[i], "-") != 0 && access (argv[i], F_OK) < 0)
4028 perror_with_name (argv[i]);
4033 infiles[n_infiles].language = spec_lang;
4034 infiles[n_infiles++].name = argv[i];
4039 if (n_infiles == last_language_n_infiles && spec_lang != 0)
4040 error ("warning: `-x %s' after last input file has no effect", spec_lang);
4042 /* Ensure we only invoke each subprocess once. */
4043 if (target_help_flag || print_help_list)
4047 /* Create a dummy input file, so that we can pass --target-help on to
4048 the various sub-processes. */
4049 infiles[0].language = "c";
4050 infiles[0].name = "help-dummy";
4052 if (target_help_flag)
4054 switches[n_switches].part1 = "--target-help";
4055 switches[n_switches].args = 0;
4056 switches[n_switches].live_cond = SWITCH_OK;
4057 switches[n_switches].validated = 0;
4062 if (print_help_list)
4064 switches[n_switches].part1 = "--help";
4065 switches[n_switches].args = 0;
4066 switches[n_switches].live_cond = SWITCH_OK;
4067 switches[n_switches].validated = 0;
4073 switches[n_switches].part1 = 0;
4074 infiles[n_infiles].name = 0;
4077 /* Store switches not filtered out by %<S in spec in COLLECT_GCC_OPTIONS
4078 and place that in the environment. */
4081 set_collect_gcc_options (void)
4086 /* Build COLLECT_GCC_OPTIONS to have all of the options specified to
4088 obstack_grow (&collect_obstack, "COLLECT_GCC_OPTIONS=",
4089 sizeof ("COLLECT_GCC_OPTIONS=") - 1);
4092 for (i = 0; (int) i < n_switches; i++)
4094 const char *const *args;
4097 obstack_grow (&collect_obstack, " ", 1);
4101 /* Ignore elided switches. */
4102 if (switches[i].live_cond == SWITCH_IGNORE)
4105 obstack_grow (&collect_obstack, "'-", 2);
4106 q = switches[i].part1;
4107 while ((p = strchr (q, '\'')))
4109 obstack_grow (&collect_obstack, q, p - q);
4110 obstack_grow (&collect_obstack, "'\\''", 4);
4113 obstack_grow (&collect_obstack, q, strlen (q));
4114 obstack_grow (&collect_obstack, "'", 1);
4116 for (args = switches[i].args; args && *args; args++)
4118 obstack_grow (&collect_obstack, " '", 2);
4120 while ((p = strchr (q, '\'')))
4122 obstack_grow (&collect_obstack, q, p - q);
4123 obstack_grow (&collect_obstack, "'\\''", 4);
4126 obstack_grow (&collect_obstack, q, strlen (q));
4127 obstack_grow (&collect_obstack, "'", 1);
4130 obstack_grow (&collect_obstack, "\0", 1);
4131 putenv (obstack_finish (&collect_obstack));
4134 /* Process a spec string, accumulating and running commands. */
4136 /* These variables describe the input file name.
4137 input_file_number is the index on outfiles of this file,
4138 so that the output file name can be stored for later use by %o.
4139 input_basename is the start of the part of the input file
4140 sans all directory names, and basename_length is the number
4141 of characters starting there excluding the suffix .c or whatever. */
4143 static const char *input_filename;
4144 static int input_file_number;
4145 size_t input_filename_length;
4146 static int basename_length;
4147 static int suffixed_basename_length;
4148 static const char *input_basename;
4149 static const char *input_suffix;
4150 static struct stat input_stat;
4151 static int input_stat_set;
4153 /* The compiler used to process the current input file. */
4154 static struct compiler *input_file_compiler;
4156 /* These are variables used within do_spec and do_spec_1. */
4158 /* Nonzero if an arg has been started and not yet terminated
4159 (with space, tab or newline). */
4160 static int arg_going;
4162 /* Nonzero means %d or %g has been seen; the next arg to be terminated
4163 is a temporary file name. */
4164 static int delete_this_arg;
4166 /* Nonzero means %w has been seen; the next arg to be terminated
4167 is the output file name of this compilation. */
4168 static int this_is_output_file;
4170 /* Nonzero means %s has been seen; the next arg to be terminated
4171 is the name of a library file and we should try the standard
4172 search dirs for it. */
4173 static int this_is_library_file;
4175 /* Nonzero means that the input of this command is coming from a pipe. */
4176 static int input_from_pipe;
4178 /* Nonnull means substitute this for any suffix when outputting a switches
4180 static const char *suffix_subst;
4182 /* Process the spec SPEC and run the commands specified therein.
4183 Returns 0 if the spec is successfully processed; -1 if failed. */
4186 do_spec (const char *spec)
4190 value = do_spec_2 (spec);
4192 /* Force out any unfinished command.
4193 If -pipe, this forces out the last command if it ended in `|'. */
4196 if (argbuf_index > 0 && !strcmp (argbuf[argbuf_index - 1], "|"))
4199 set_collect_gcc_options ();
4201 if (argbuf_index > 0)
4209 do_spec_2 (const char *spec)
4216 delete_this_arg = 0;
4217 this_is_output_file = 0;
4218 this_is_library_file = 0;
4219 input_from_pipe = 0;
4220 suffix_subst = NULL;
4222 result = do_spec_1 (spec, 0, NULL);
4224 /* End any pending argument. */
4227 obstack_1grow (&obstack, 0);
4228 string = obstack_finish (&obstack);
4229 if (this_is_library_file)
4230 string = find_file (string);
4231 store_arg (string, delete_this_arg, this_is_output_file);
4232 if (this_is_output_file)
4233 outfiles[input_file_number] = string;
4241 /* Process the given spec string and add any new options to the end
4242 of the switches/n_switches array. */
4245 do_option_spec (const char *name, const char *spec)
4247 unsigned int i, value_count, value_len;
4248 const char *p, *q, *value;
4249 char *tmp_spec, *tmp_spec_p;
4251 if (configure_default_options[0].name == NULL)
4254 for (i = 0; i < ARRAY_SIZE (configure_default_options); i++)
4255 if (strcmp (configure_default_options[i].name, name) == 0)
4257 if (i == ARRAY_SIZE (configure_default_options))
4260 value = configure_default_options[i].value;
4261 value_len = strlen (value);
4263 /* Compute the size of the final spec. */
4266 while ((p = strstr (p, "%(VALUE)")) != NULL)
4272 /* Replace each %(VALUE) by the specified value. */
4273 tmp_spec = alloca (strlen (spec) + 1
4274 + value_count * (value_len - strlen ("%(VALUE)")));
4275 tmp_spec_p = tmp_spec;
4277 while ((p = strstr (q, "%(VALUE)")) != NULL)
4279 memcpy (tmp_spec_p, q, p - q);
4280 tmp_spec_p = tmp_spec_p + (p - q);
4281 memcpy (tmp_spec_p, value, value_len);
4282 tmp_spec_p += value_len;
4283 q = p + strlen ("%(VALUE)");
4285 strcpy (tmp_spec_p, q);
4287 do_self_spec (tmp_spec);
4290 /* Process the given spec string and add any new options to the end
4291 of the switches/n_switches array. */
4294 do_self_spec (const char *spec)
4297 do_spec_1 (" ", 0, NULL);
4299 if (argbuf_index > 0)
4304 n_switches += argbuf_index;
4305 switches = xrealloc (switches,
4306 sizeof (struct switchstr) * (n_switches + 1));
4308 switches[n_switches] = switches[first];
4309 for (i = 0; i < argbuf_index; i++)
4311 struct switchstr *sw;
4313 /* Each switch should start with '-'. */
4314 if (argbuf[i][0] != '-')
4317 sw = &switches[i + first];
4318 sw->part1 = &argbuf[i][1];
4320 sw->live_cond = SWITCH_OK;
4327 /* Process the sub-spec SPEC as a portion of a larger spec.
4328 This is like processing a whole spec except that we do
4329 not initialize at the beginning and we do not supply a
4330 newline by default at the end.
4331 INSWITCH nonzero means don't process %-sequences in SPEC;
4332 in this case, % is treated as an ordinary character.
4333 This is used while substituting switches.
4334 INSWITCH nonzero also causes SPC not to terminate an argument.
4336 Value is zero unless a line was finished
4337 and the command on that line reported an error. */
4340 do_spec_1 (const char *spec, int inswitch, const char *soft_matched_part)
4342 const char *p = spec;
4349 /* If substituting a switch, treat all chars like letters.
4350 Otherwise, NL, SPC, TAB and % are special. */
4351 switch (inswitch ? 'a' : c)
4354 /* End of line: finish any pending argument,
4355 then run the pending command if one has been started. */
4358 obstack_1grow (&obstack, 0);
4359 string = obstack_finish (&obstack);
4360 if (this_is_library_file)
4361 string = find_file (string);
4362 store_arg (string, delete_this_arg, this_is_output_file);
4363 if (this_is_output_file)
4364 outfiles[input_file_number] = string;
4368 if (argbuf_index > 0 && !strcmp (argbuf[argbuf_index - 1], "|"))
4370 /* A `|' before the newline means use a pipe here,
4371 but only if -pipe was specified.
4372 Otherwise, execute now and don't pass the `|' as an arg. */
4375 input_from_pipe = 1;
4382 set_collect_gcc_options ();
4384 if (argbuf_index > 0)
4390 /* Reinitialize for a new command, and for a new argument. */
4393 delete_this_arg = 0;
4394 this_is_output_file = 0;
4395 this_is_library_file = 0;
4396 input_from_pipe = 0;
4400 /* End any pending argument. */
4403 obstack_1grow (&obstack, 0);
4404 string = obstack_finish (&obstack);
4405 if (this_is_library_file)
4406 string = find_file (string);
4407 store_arg (string, delete_this_arg, this_is_output_file);
4408 if (this_is_output_file)
4409 outfiles[input_file_number] = string;
4413 obstack_1grow (&obstack, c);
4419 /* Space or tab ends an argument if one is pending. */
4422 obstack_1grow (&obstack, 0);
4423 string = obstack_finish (&obstack);
4424 if (this_is_library_file)
4425 string = find_file (string);
4426 store_arg (string, delete_this_arg, this_is_output_file);
4427 if (this_is_output_file)
4428 outfiles[input_file_number] = string;
4430 /* Reinitialize for a new argument. */
4432 delete_this_arg = 0;
4433 this_is_output_file = 0;
4434 this_is_library_file = 0;
4441 fatal ("invalid specification! Bug in cc");
4444 obstack_grow (&obstack, input_basename, basename_length);
4449 obstack_grow (&obstack, input_basename, suffixed_basename_length);
4454 delete_this_arg = 2;
4457 /* Dump out the directories specified with LIBRARY_PATH,
4458 followed by the absolute directories
4459 that we search for startfiles. */
4462 struct prefix_list *pl = startfile_prefixes.plist;
4463 size_t bufsize = 100;
4464 char *buffer = xmalloc (bufsize);
4467 for (; pl; pl = pl->next)
4469 #ifdef RELATIVE_PREFIX_NOT_LINKDIR
4470 /* Used on systems which record the specified -L dirs
4471 and use them to search for dynamic linking. */
4472 /* Relative directories always come from -B,
4473 and it is better not to use them for searching
4474 at run time. In particular, stage1 loses. */
4475 if (!IS_ABSOLUTE_PATH (pl->prefix))
4478 /* Try subdirectory if there is one. */
4479 if (multilib_dir != NULL
4480 || (pl->os_multilib && multilib_os_dir != NULL))
4482 const char *multi_dir;
4484 multi_dir = pl->os_multilib ? multilib_os_dir
4486 if (machine_suffix && multilib_dir)
4488 if (strlen (pl->prefix) + strlen (machine_suffix)
4490 bufsize = (strlen (pl->prefix)
4491 + strlen (machine_suffix)) * 2 + 1;
4492 buffer = xrealloc (buffer, bufsize);
4493 strcpy (buffer, pl->prefix);
4494 strcat (buffer, machine_suffix);
4495 if (is_directory (buffer, multilib_dir, 1))
4497 do_spec_1 ("-L", 0, NULL);
4498 #ifdef SPACE_AFTER_L_OPTION
4499 do_spec_1 (" ", 0, NULL);
4501 do_spec_1 (buffer, 1, NULL);
4502 do_spec_1 (multilib_dir, 1, NULL);
4503 /* Make this a separate argument. */
4504 do_spec_1 (" ", 0, NULL);
4507 if (!pl->require_machine_suffix)
4509 if (is_directory (pl->prefix, multi_dir, 1))
4511 do_spec_1 ("-L", 0, NULL);
4512 #ifdef SPACE_AFTER_L_OPTION
4513 do_spec_1 (" ", 0, NULL);
4515 do_spec_1 (pl->prefix, 1, NULL);
4516 do_spec_1 (multi_dir, 1, NULL);
4517 /* Make this a separate argument. */
4518 do_spec_1 (" ", 0, NULL);
4524 if (is_directory (pl->prefix, machine_suffix, 1))
4526 do_spec_1 ("-L", 0, NULL);
4527 #ifdef SPACE_AFTER_L_OPTION
4528 do_spec_1 (" ", 0, NULL);
4530 do_spec_1 (pl->prefix, 1, NULL);
4531 /* Remove slash from machine_suffix. */
4532 if (strlen (machine_suffix) >= bufsize)
4533 bufsize = strlen (machine_suffix) * 2 + 1;
4534 buffer = xrealloc (buffer, bufsize);
4535 strcpy (buffer, machine_suffix);
4536 idx = strlen (buffer);
4537 if (IS_DIR_SEPARATOR (buffer[idx - 1]))
4538 buffer[idx - 1] = 0;
4539 do_spec_1 (buffer, 1, NULL);
4540 /* Make this a separate argument. */
4541 do_spec_1 (" ", 0, NULL);
4544 if (!pl->require_machine_suffix)
4546 if (is_directory (pl->prefix, "", 1))
4548 do_spec_1 ("-L", 0, NULL);
4549 #ifdef SPACE_AFTER_L_OPTION
4550 do_spec_1 (" ", 0, NULL);
4552 /* Remove slash from pl->prefix. */
4553 if (strlen (pl->prefix) >= bufsize)
4554 bufsize = strlen (pl->prefix) * 2 + 1;
4555 buffer = xrealloc (buffer, bufsize);
4556 strcpy (buffer, pl->prefix);
4557 idx = strlen (buffer);
4558 if (IS_DIR_SEPARATOR (buffer[idx - 1]))
4559 buffer[idx - 1] = 0;
4560 do_spec_1 (buffer, 1, NULL);
4561 /* Make this a separate argument. */
4562 do_spec_1 (" ", 0, NULL);
4571 /* %efoo means report an error with `foo' as error message
4572 and don't execute any more commands for this file. */
4576 while (*p != 0 && *p != '\n')
4578 buf = alloca (p - q + 1);
4579 strncpy (buf, q, p - q);
4586 /* %nfoo means report a notice with `foo' on stderr. */
4590 while (*p != 0 && *p != '\n')
4592 buf = alloca (p - q + 1);
4593 strncpy (buf, q, p - q);
4595 notice ("%s\n", buf);
4605 /* If save_temps_flag is off, and the HOST_BIT_BUCKET is
4606 defined, and it is not a directory, and it is
4607 writable, use it. Otherwise, treat this like any
4608 other temporary file. */
4610 if ((!save_temps_flag)
4611 && (stat (HOST_BIT_BUCKET, &st) == 0) && (!S_ISDIR (st.st_mode))
4612 && (access (HOST_BIT_BUCKET, W_OK) == 0))
4614 obstack_grow (&obstack, HOST_BIT_BUCKET,
4615 strlen (HOST_BIT_BUCKET));
4616 delete_this_arg = 0;
4621 goto create_temp_file;
4625 obstack_1grow (&obstack, '-');
4626 delete_this_arg = 0;
4629 /* consume suffix */
4630 while (*p == '.' || ISALPHA ((unsigned char) *p))
4632 if (p[0] == '%' && p[1] == 'O')
4637 goto create_temp_file;
4641 /* consume suffix */
4642 while (*p == '.' || ISALPHA ((unsigned char) *p))
4644 if (p[0] == '%' && p[1] == 'O')
4649 goto create_temp_file;
4655 struct temp_name *t;
4657 const char *suffix = p;
4658 char *saved_suffix = NULL;
4660 while (*p == '.' || ISALPHA ((unsigned char) *p))
4662 suffix_length = p - suffix;
4663 if (p[0] == '%' && p[1] == 'O')
4666 /* We don't support extra suffix characters after %O. */
4667 if (*p == '.' || ISALPHA ((unsigned char) *p))
4669 if (suffix_length == 0)
4670 suffix = TARGET_OBJECT_SUFFIX;
4674 = xmalloc (suffix_length
4675 + strlen (TARGET_OBJECT_SUFFIX));
4676 strncpy (saved_suffix, suffix, suffix_length);
4677 strcpy (saved_suffix + suffix_length,
4678 TARGET_OBJECT_SUFFIX);
4680 suffix_length += strlen (TARGET_OBJECT_SUFFIX);
4683 /* If the input_filename has the same suffix specified
4684 for the %g, %u, or %U, and -save-temps is specified,
4685 we could end up using that file as an intermediate
4686 thus clobbering the user's source file (.e.g.,
4687 gcc -save-temps foo.s would clobber foo.s with the
4688 output of cpp0). So check for this condition and
4689 generate a temp file as the intermediate. */
4691 if (save_temps_flag)
4693 temp_filename_length = basename_length + suffix_length;
4694 temp_filename = alloca (temp_filename_length + 1);
4695 strncpy ((char *) temp_filename, input_basename, basename_length);
4696 strncpy ((char *) temp_filename + basename_length, suffix,
4698 *((char *) temp_filename + temp_filename_length) = '\0';
4699 if (strcmp (temp_filename, input_filename) != 0)
4701 struct stat st_temp;
4703 /* Note, set_input() resets input_stat_set to 0. */
4704 if (input_stat_set == 0)
4706 input_stat_set = stat (input_filename, &input_stat);
4707 if (input_stat_set >= 0)
4711 /* If we have the stat for the input_filename
4712 and we can do the stat for the temp_filename
4713 then the they could still refer to the same
4714 file if st_dev/st_ino's are the same. */
4716 if (input_stat_set != 1
4717 || stat (temp_filename, &st_temp) < 0
4718 || input_stat.st_dev != st_temp.st_dev
4719 || input_stat.st_ino != st_temp.st_ino)
4721 temp_filename = save_string (temp_filename,
4722 temp_filename_length + 1);
4723 obstack_grow (&obstack, temp_filename,
4724 temp_filename_length);
4726 delete_this_arg = 0;
4732 /* See if we already have an association of %g/%u/%U and
4734 for (t = temp_names; t; t = t->next)
4735 if (t->length == suffix_length
4736 && strncmp (t->suffix, suffix, suffix_length) == 0
4737 && t->unique == (c == 'u' || c == 'U' || c == 'j'))
4740 /* Make a new association if needed. %u and %j
4742 if (t == 0 || c == 'u' || c == 'j')
4746 t = xmalloc (sizeof (struct temp_name));
4747 t->next = temp_names;
4750 t->length = suffix_length;
4753 t->suffix = saved_suffix;
4754 saved_suffix = NULL;
4757 t->suffix = save_string (suffix, suffix_length);
4758 t->unique = (c == 'u' || c == 'U' || c == 'j');
4759 temp_filename = make_temp_file (t->suffix);
4760 temp_filename_length = strlen (temp_filename);
4761 t->filename = temp_filename;
4762 t->filename_length = temp_filename_length;
4766 free (saved_suffix);
4768 obstack_grow (&obstack, t->filename, t->filename_length);
4769 delete_this_arg = 1;
4777 for (i = 0; (int) i < n_infiles; i++)
4778 store_arg (infiles[i].name, 0, 0);
4782 obstack_grow (&obstack, input_filename, input_filename_length);
4789 struct prefix_list *pl = include_prefixes.plist;
4791 if (gcc_exec_prefix)
4793 do_spec_1 ("-iprefix", 1, NULL);
4794 /* Make this a separate argument. */
4795 do_spec_1 (" ", 0, NULL);
4796 do_spec_1 (gcc_exec_prefix, 1, NULL);
4797 do_spec_1 (" ", 0, NULL);
4800 if (target_system_root_changed ||
4801 (target_system_root && target_sysroot_hdrs_suffix))
4803 do_spec_1 ("-isysroot", 1, NULL);
4804 /* Make this a separate argument. */
4805 do_spec_1 (" ", 0, NULL);
4806 do_spec_1 (target_system_root, 1, NULL);
4807 if (target_sysroot_hdrs_suffix)
4808 do_spec_1 (target_sysroot_hdrs_suffix, 1, NULL);
4809 do_spec_1 (" ", 0, NULL);
4812 for (; pl; pl = pl->next)
4814 do_spec_1 ("-isystem", 1, NULL);
4815 /* Make this a separate argument. */
4816 do_spec_1 (" ", 0, NULL);
4817 do_spec_1 (pl->prefix, 1, NULL);
4818 do_spec_1 (" ", 0, NULL);
4825 int max = n_infiles;
4826 max += lang_specific_extra_outfiles;
4828 for (i = 0; i < max; i++)
4830 store_arg (outfiles[i], 0, 0);
4835 obstack_grow (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX));
4840 this_is_library_file = 1;
4844 outfiles[input_file_number] = NULL;
4848 this_is_output_file = 1;
4853 int cur_index = argbuf_index;
4854 /* Handle the {...} following the %W. */
4857 p = handle_braces (p + 1);
4860 /* End any pending argument. */
4863 obstack_1grow (&obstack, 0);
4864 string = obstack_finish (&obstack);
4865 if (this_is_library_file)
4866 string = find_file (string);
4867 store_arg (string, delete_this_arg, this_is_output_file);
4868 if (this_is_output_file)
4869 outfiles[input_file_number] = string;
4872 /* If any args were output, mark the last one for deletion
4874 if (argbuf_index != cur_index)
4875 record_temp_file (argbuf[argbuf_index - 1], 0, 1);
4879 /* %x{OPTION} records OPTION for %X to output. */
4885 /* Skip past the option value and make a copy. */
4890 string = save_string (p1 + 1, p - p1 - 2);
4892 /* See if we already recorded this option. */
4893 for (i = 0; i < n_linker_options; i++)
4894 if (! strcmp (string, linker_options[i]))
4900 /* This option is new; add it. */
4901 add_linker_option (string, strlen (string));
4905 /* Dump out the options accumulated previously using %x. */
4907 for (i = 0; i < n_linker_options; i++)
4909 do_spec_1 (linker_options[i], 1, NULL);
4910 /* Make each accumulated option a separate argument. */
4911 do_spec_1 (" ", 0, NULL);
4915 /* Dump out the options accumulated previously using -Wa,. */
4917 for (i = 0; i < n_assembler_options; i++)
4919 do_spec_1 (assembler_options[i], 1, NULL);
4920 /* Make each accumulated option a separate argument. */
4921 do_spec_1 (" ", 0, NULL);
4925 /* Dump out the options accumulated previously using -Wp,. */
4927 for (i = 0; i < n_preprocessor_options; i++)
4929 do_spec_1 (preprocessor_options[i], 1, NULL);
4930 /* Make each accumulated option a separate argument. */
4931 do_spec_1 (" ", 0, NULL);
4935 /* Here are digits and numbers that just process
4936 a certain constant string as a spec. */
4939 value = do_spec_1 (cc1_spec, 0, NULL);
4945 value = do_spec_1 (cc1plus_spec, 0, NULL);
4951 value = do_spec_1 (asm_spec, 0, NULL);
4957 value = do_spec_1 (asm_final_spec, 0, NULL);
4964 const char *const spec
4965 = (input_file_compiler->cpp_spec
4966 ? input_file_compiler->cpp_spec
4968 value = do_spec_1 (spec, 0, NULL);
4975 value = do_spec_1 (endfile_spec, 0, NULL);
4981 value = do_spec_1 (link_spec, 0, NULL);
4987 value = do_spec_1 (lib_spec, 0, NULL);
4993 value = do_spec_1 (libgcc_spec, 0, NULL);
4999 if (multilib_dir && strcmp (multilib_dir, ".") != 0)
5005 len = strlen (multilib_dir);
5006 obstack_blank (&obstack, len + 1);
5007 p = obstack_next_free (&obstack) - (len + 1);
5010 for (q = multilib_dir; *q ; ++q, ++p)
5011 *p = (IS_DIR_SEPARATOR (*q) ? '_' : *q);
5016 /* We assume there is a directory
5017 separator at the end of this string. */
5018 if (target_system_root)
5020 obstack_grow (&obstack, target_system_root,
5021 strlen (target_system_root));
5022 if (target_sysroot_suffix)
5023 obstack_grow (&obstack, target_sysroot_suffix,
5024 strlen (target_sysroot_suffix));
5029 value = do_spec_1 (startfile_spec, 0, NULL);
5034 /* Here we define characters other than letters and digits. */
5037 p = handle_braces (p);
5043 p = handle_spec_function (p);
5049 obstack_1grow (&obstack, '%');
5056 while (p[len] && p[len] != ' ' && p[len] != '%')
5058 suffix_subst = save_string (p - 1, len + 1);
5063 /* Henceforth ignore the option(s) matching the pattern
5068 int have_wildcard = 0;
5071 while (p[len] && p[len] != ' ' && p[len] != '\t')
5074 if (p[len-1] == '*')
5077 for (i = 0; i < n_switches; i++)
5078 if (!strncmp (switches[i].part1, p, len - have_wildcard)
5079 && (have_wildcard || switches[i].part1[len] == '\0'))
5081 switches[i].live_cond = SWITCH_IGNORE;
5082 switches[i].validated = 1;
5090 if (soft_matched_part)
5092 do_spec_1 (soft_matched_part, 1, NULL);
5093 do_spec_1 (" ", 0, NULL);
5096 /* Catch the case where a spec string contains something like
5097 '%{foo:%*}'. ie there is no * in the pattern on the left
5098 hand side of the :. */
5099 error ("spec failure: '%%*' has not been initialized by pattern match");
5102 /* Process a string found as the value of a spec given by name.
5103 This feature allows individual machine descriptions
5104 to add and use their own specs.
5105 %[...] modifies -D options the way %P does;
5106 %(...) uses the spec unmodified. */
5108 error ("warning: use of obsolete %%[ operator in specs");
5111 const char *name = p;
5112 struct spec_list *sl;
5115 /* The string after the S/P is the name of a spec that is to be
5117 while (*p && *p != ')' && *p != ']')
5120 /* See if it's in the list. */
5121 for (len = p - name, sl = specs; sl; sl = sl->next)
5122 if (sl->name_len == len && !strncmp (sl->name, name, len))
5124 name = *(sl->ptr_spec);
5126 notice ("Processing spec %c%s%c, which is '%s'\n",
5127 c, sl->name, (c == '(') ? ')' : ']', name);
5136 value = do_spec_1 (name, 0, NULL);
5142 char *x = alloca (strlen (name) * 2 + 1);
5144 const char *y = name;
5147 /* Copy all of NAME into BUF, but put __ after
5148 every -D and at the end of each arg. */
5151 if (! strncmp (y, "-D", 2))
5162 && (*y == ' ' || *y == '\t' || *y == '='
5163 || *y == '}' || *y == 0))
5176 value = do_spec_1 (buf, 0, NULL);
5182 /* Discard the closing paren or bracket. */
5189 error ("spec failure: unrecognized spec option '%c'", c);
5195 /* Backslash: treat next character as ordinary. */
5200 /* Ordinary character: put it into the current argument. */
5201 obstack_1grow (&obstack, c);
5205 /* End of string. If we are processing a spec function, we need to
5206 end any pending argument. */
5207 if (processing_spec_function && arg_going)
5209 obstack_1grow (&obstack, 0);
5210 string = obstack_finish (&obstack);
5211 if (this_is_library_file)
5212 string = find_file (string);
5213 store_arg (string, delete_this_arg, this_is_output_file);
5214 if (this_is_output_file)
5215 outfiles[input_file_number] = string;
5222 /* Look up a spec function. */
5224 static const struct spec_function *
5225 lookup_spec_function (const char *name)
5227 static const struct spec_function * const spec_function_tables[] =
5229 static_spec_functions,
5230 lang_specific_spec_functions,
5232 const struct spec_function *sf;
5235 for (i = 0; i < ARRAY_SIZE (spec_function_tables); i++)
5237 for (sf = spec_function_tables[i]; sf->name != NULL; sf++)
5238 if (strcmp (sf->name, name) == 0)
5245 /* Evaluate a spec function. */
5248 eval_spec_function (const char *func, const char *args)
5250 const struct spec_function *sf;
5251 const char *funcval;
5253 /* Saved spec processing context. */
5254 int save_argbuf_index;
5255 int save_argbuf_length;
5256 const char **save_argbuf;
5259 int save_delete_this_arg;
5260 int save_this_is_output_file;
5261 int save_this_is_library_file;
5262 int save_input_from_pipe;
5263 const char *save_suffix_subst;
5266 sf = lookup_spec_function (func);
5268 fatal ("unknown spec function `%s'", func);
5270 /* Push the spec processing context. */
5271 save_argbuf_index = argbuf_index;
5272 save_argbuf_length = argbuf_length;
5273 save_argbuf = argbuf;
5275 save_arg_going = arg_going;
5276 save_delete_this_arg = delete_this_arg;
5277 save_this_is_output_file = this_is_output_file;
5278 save_this_is_library_file = this_is_library_file;
5279 save_input_from_pipe = input_from_pipe;
5280 save_suffix_subst = suffix_subst;
5282 /* Create a new spec processing context, and build the function
5286 if (do_spec_2 (args) < 0)
5287 fatal ("error in args to spec function `%s'", func);
5289 /* argbuf_index is an index for the next argument to be inserted, and
5290 so contains the count of the args already inserted. */
5292 funcval = (*sf->func) (argbuf_index, argbuf);
5294 /* Pop the spec processing context. */
5295 argbuf_index = save_argbuf_index;
5296 argbuf_length = save_argbuf_length;
5298 argbuf = save_argbuf;
5300 arg_going = save_arg_going;
5301 delete_this_arg = save_delete_this_arg;
5302 this_is_output_file = save_this_is_output_file;
5303 this_is_library_file = save_this_is_library_file;
5304 input_from_pipe = save_input_from_pipe;
5305 suffix_subst = save_suffix_subst;
5310 /* Handle a spec function call of the form:
5314 ARGS is processed as a spec in a separate context and split into an
5315 argument vector in the normal fashion. The function returns a string
5316 containing a spec which we then process in the caller's context, or
5317 NULL if no processing is required. */
5320 handle_spec_function (const char *p)
5323 const char *endp, *funcval;
5326 processing_spec_function++;
5328 /* Get the function name. */
5329 for (endp = p; *endp != '\0'; endp++)
5331 if (*endp == '(') /* ) */
5333 /* Only allow [A-Za-z0-9], -, and _ in function names. */
5334 if (!ISALNUM (*endp) && !(*endp == '-' || *endp == '_'))
5335 fatal ("malformed spec function name");
5337 if (*endp != '(') /* ) */
5338 fatal ("no arguments for spec function");
5339 func = save_string (p, endp - p);
5342 /* Get the arguments. */
5343 for (count = 0; *endp != '\0'; endp++)
5352 else if (*endp == '(') /* ) */
5357 fatal ("malformed spec function arguments");
5358 args = save_string (p, endp - p);
5361 /* p now points to just past the end of the spec function expression. */
5363 funcval = eval_spec_function (func, args);
5364 if (funcval != NULL && do_spec_1 (funcval, 0, NULL) < 0)
5370 processing_spec_function--;
5375 /* Inline subroutine of handle_braces. Returns true if the current
5376 input suffix matches the atom bracketed by ATOM and END_ATOM. */
5378 input_suffix_matches (const char *atom, const char *end_atom)
5380 return (input_suffix
5381 && !strncmp (input_suffix, atom, end_atom - atom)
5382 && input_suffix[end_atom - atom] == '\0');
5385 /* Inline subroutine of handle_braces. Returns true if a switch
5386 matching the atom bracketed by ATOM and END_ATOM appeared on the
5389 switch_matches (const char *atom, const char *end_atom, int starred)
5392 int len = end_atom - atom;
5393 int plen = starred ? len : -1;
5395 for (i = 0; i < n_switches; i++)
5396 if (!strncmp (switches[i].part1, atom, len)
5397 && (starred || switches[i].part1[len] == '\0')
5398 && check_live_switch (i, plen))
5404 /* Inline subroutine of handle_braces. Mark all of the switches which
5405 match ATOM (extends to END_ATOM; STARRED indicates whether there
5406 was a star after the atom) for later processing. */
5408 mark_matching_switches (const char *atom, const char *end_atom, int starred)
5411 int len = end_atom - atom;
5412 int plen = starred ? len : -1;
5414 for (i = 0; i < n_switches; i++)
5415 if (!strncmp (switches[i].part1, atom, len)
5416 && (starred || switches[i].part1[len] == '\0')
5417 && check_live_switch (i, plen))
5418 switches[i].ordering = 1;
5421 /* Inline subroutine of handle_braces. Process all the currently
5422 marked switches through give_switch, and clear the marks. */
5424 process_marked_switches (void)
5428 for (i = 0; i < n_switches; i++)
5429 if (switches[i].ordering == 1)
5431 switches[i].ordering = 0;
5436 /* Handle a %{ ... } construct. P points just inside the leading {.
5437 Returns a pointer one past the end of the brace block, or 0
5438 if we call do_spec_1 and that returns -1. */
5441 handle_braces (const char *p)
5443 const char *atom, *end_atom;
5444 const char *d_atom = NULL, *d_end_atom = NULL;
5451 bool a_must_be_last = false;
5452 bool ordered_set = false;
5453 bool disjunct_set = false;
5454 bool disj_matched = false;
5455 bool disj_starred = true;
5456 bool n_way_choice = false;
5457 bool n_way_matched = false;
5459 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
5466 /* Scan one "atom" (S in the description above of %{}, possibly
5467 with !, ., or * modifiers). */
5468 a_matched = a_is_suffix = a_is_starred = a_is_negated = false;
5472 p++, a_is_negated = true;
5476 p++, a_is_suffix = true;
5479 while (ISIDNUM(*p) || *p == '-' || *p == '+' || *p == '='
5480 || *p == ',' || *p == '.' || *p == '@')
5485 p++, a_is_starred = 1;
5488 if (*p == '&' || *p == '}')
5490 /* Substitute the switch(es) indicated by the current atom. */
5492 if (disjunct_set || n_way_choice || a_is_negated || a_is_suffix
5493 || atom == end_atom)
5496 mark_matching_switches (atom, end_atom, a_is_starred);
5499 process_marked_switches ();
5501 else if (*p == '|' || *p == ':')
5503 /* Substitute some text if the current atom appears as a switch
5505 disjunct_set = true;
5509 if (atom == end_atom)
5511 if (!n_way_choice || disj_matched || *p == '|'
5512 || a_is_negated || a_is_suffix || a_is_starred)
5515 /* An empty term may appear as the last choice of an
5516 N-way choice set; it means "otherwise". */
5517 a_must_be_last = true;
5518 disj_matched = !n_way_matched;
5519 disj_starred = false;
5523 if (a_is_suffix && a_is_starred)
5527 disj_starred = false;
5529 /* Don't bother testing this atom if we already have a
5531 if (!disj_matched && !n_way_matched)
5534 a_matched = input_suffix_matches (atom, end_atom);
5536 a_matched = switch_matches (atom, end_atom, a_is_starred);
5538 if (a_matched != a_is_negated)
5540 disj_matched = true;
5542 d_end_atom = end_atom;
5549 /* Found the body, that is, the text to substitute if the
5550 current disjunction matches. */
5551 p = process_brace_body (p + 1, d_atom, d_end_atom, disj_starred,
5552 disj_matched && !n_way_matched);
5556 /* If we have an N-way choice, reset state for the next
5560 n_way_choice = true;
5561 n_way_matched |= disj_matched;
5562 disj_matched = false;
5563 disj_starred = true;
5564 d_atom = d_end_atom = NULL;
5571 while (*p++ != '}');
5578 /* Subroutine of handle_braces. Scan and process a brace substitution body
5579 (X in the description of %{} syntax). P points one past the colon;
5580 ATOM and END_ATOM bracket the first atom which was found to be true
5581 (present) in the current disjunction; STARRED indicates whether all
5582 the atoms in the current disjunction were starred (for syntax validation);
5583 MATCHED indicates whether the disjunction matched or not, and therefore
5584 whether or not the body is to be processed through do_spec_1 or just
5585 skipped. Returns a pointer to the closing } or ;, or 0 if do_spec_1
5589 process_brace_body (const char *p, const char *atom, const char *end_atom,
5590 int starred, int matched)
5592 const char *body, *end_body;
5593 unsigned int nesting_level;
5594 bool have_subst = false;
5596 /* Locate the closing } or ;, honoring nested braces.
5597 Trim trailing whitespace. */
5606 if (!--nesting_level)
5609 else if (*p == ';' && nesting_level == 1)
5611 else if (*p == '%' && p[1] == '*' && nesting_level == 1)
5613 else if (*p == '\0')
5619 while (end_body[-1] == ' ' || end_body[-1] == '\t')
5622 if (have_subst && !starred)
5627 /* Copy the substitution body to permanent storage and execute it.
5628 If have_subst is false, this is a simple matter of running the
5629 body through do_spec_1... */
5630 char *string = save_string (body, end_body - body);
5633 if (do_spec_1 (string, 0, NULL) < 0)
5638 /* ... but if have_subst is true, we have to process the
5639 body once for each matching switch, with %* set to the
5640 variant part of the switch. */
5641 unsigned int hard_match_len = end_atom - atom;
5644 for (i = 0; i < n_switches; i++)
5645 if (!strncmp (switches[i].part1, atom, hard_match_len)
5646 && check_live_switch (i, hard_match_len))
5648 if (do_spec_1 (string, 0,
5649 &switches[i].part1[hard_match_len]) < 0)
5651 /* Pass any arguments this switch has. */
5653 suffix_subst = NULL;
5661 /* Return 0 iff switch number SWITCHNUM is obsoleted by a later switch
5662 on the command line. PREFIX_LENGTH is the length of XXX in an {XXX*}
5663 spec, or -1 if either exact match or %* is used.
5665 A -O switch is obsoleted by a later -O switch. A -f, -m, or -W switch
5666 whose value does not begin with "no-" is obsoleted by the same value
5667 with the "no-", similarly for a switch with the "no-" prefix. */
5670 check_live_switch (int switchnum, int prefix_length)
5672 const char *name = switches[switchnum].part1;
5675 /* In the common case of {<at-most-one-letter>*}, a negating
5676 switch would always match, so ignore that case. We will just
5677 send the conflicting switches to the compiler phase. */
5678 if (prefix_length >= 0 && prefix_length <= 1)
5681 /* If we already processed this switch and determined if it was
5682 live or not, return our past determination. */
5683 if (switches[switchnum].live_cond != 0)
5684 return switches[switchnum].live_cond > 0;
5686 /* Now search for duplicate in a manner that depends on the name. */
5690 for (i = switchnum + 1; i < n_switches; i++)
5691 if (switches[i].part1[0] == 'O')
5693 switches[switchnum].validated = 1;
5694 switches[switchnum].live_cond = SWITCH_FALSE;
5699 case 'W': case 'f': case 'm':
5700 if (! strncmp (name + 1, "no-", 3))
5702 /* We have Xno-YYY, search for XYYY. */
5703 for (i = switchnum + 1; i < n_switches; i++)
5704 if (switches[i].part1[0] == name[0]
5705 && ! strcmp (&switches[i].part1[1], &name[4]))
5707 switches[switchnum].validated = 1;
5708 switches[switchnum].live_cond = SWITCH_FALSE;
5714 /* We have XYYY, search for Xno-YYY. */
5715 for (i = switchnum + 1; i < n_switches; i++)
5716 if (switches[i].part1[0] == name[0]
5717 && switches[i].part1[1] == 'n'
5718 && switches[i].part1[2] == 'o'
5719 && switches[i].part1[3] == '-'
5720 && !strcmp (&switches[i].part1[4], &name[1]))
5722 switches[switchnum].validated = 1;
5723 switches[switchnum].live_cond = SWITCH_FALSE;
5730 /* Otherwise the switch is live. */
5731 switches[switchnum].live_cond = SWITCH_LIVE;
5735 /* Pass a switch to the current accumulating command
5736 in the same form that we received it.
5737 SWITCHNUM identifies the switch; it is an index into
5738 the vector of switches gcc received, which is `switches'.
5739 This cannot fail since it never finishes a command line.
5741 If OMIT_FIRST_WORD is nonzero, then we omit .part1 of the argument. */
5744 give_switch (int switchnum, int omit_first_word)
5746 if (switches[switchnum].live_cond == SWITCH_IGNORE)
5749 if (!omit_first_word)
5751 do_spec_1 ("-", 0, NULL);
5752 do_spec_1 (switches[switchnum].part1, 1, NULL);
5755 if (switches[switchnum].args != 0)
5758 for (p = switches[switchnum].args; *p; p++)
5760 const char *arg = *p;
5762 do_spec_1 (" ", 0, NULL);
5765 unsigned length = strlen (arg);
5768 while (length-- && !IS_DIR_SEPARATOR (arg[length]))
5769 if (arg[length] == '.')
5771 ((char *)arg)[length] = 0;
5775 do_spec_1 (arg, 1, NULL);
5777 ((char *)arg)[length] = '.';
5778 do_spec_1 (suffix_subst, 1, NULL);
5781 do_spec_1 (arg, 1, NULL);
5785 do_spec_1 (" ", 0, NULL);
5786 switches[switchnum].validated = 1;
5789 /* Search for a file named NAME trying various prefixes including the
5790 user's -B prefix and some standard ones.
5791 Return the absolute file name found. If nothing is found, return NAME. */
5794 find_file (const char *name)
5798 /* Try multilib_dir if it is defined. */
5799 if (multilib_os_dir != NULL)
5801 newname = find_a_file (&startfile_prefixes, name, R_OK, 1);
5803 /* If we don't find it in the multi library dir, then fall
5804 through and look for it in the normal places. */
5805 if (newname != NULL)
5809 newname = find_a_file (&startfile_prefixes, name, R_OK, 0);
5810 return newname ? newname : name;
5813 /* Determine whether a directory exists. If LINKER, return 0 for
5814 certain fixed names not needed by the linker. If not LINKER, it is
5815 only important to return 0 if the host machine has a small ARG_MAX
5819 is_directory (const char *path1, const char *path2, int linker)
5821 int len1 = strlen (path1);
5822 int len2 = strlen (path2);
5823 char *path = alloca (3 + len1 + len2);
5827 #ifndef SMALL_ARG_MAX
5832 /* Construct the path from the two parts. Ensure the string ends with "/.".
5833 The resulting path will be a directory even if the given path is a
5835 memcpy (path, path1, len1);
5836 memcpy (path + len1, path2, len2);
5837 cp = path + len1 + len2;
5838 if (!IS_DIR_SEPARATOR (cp[-1]))
5839 *cp++ = DIR_SEPARATOR;
5843 /* Exclude directories that the linker is known to search. */
5846 && strcmp (path, concat (dir_separator_str, "lib",
5847 dir_separator_str, ".", NULL)) == 0)
5849 && strcmp (path, concat (dir_separator_str, "usr",
5850 dir_separator_str, "lib",
5851 dir_separator_str, ".", NULL)) == 0)))
5854 return (stat (path, &st) >= 0 && S_ISDIR (st.st_mode));
5857 /* Set up the various global variables to indicate that we're processing
5858 the input file named FILENAME. */
5861 set_input (const char *filename)
5865 input_filename = filename;
5866 input_filename_length = strlen (input_filename);
5868 input_basename = input_filename;
5869 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
5870 /* Skip drive name so 'x:foo' is handled properly. */
5871 if (input_basename[1] == ':')
5872 input_basename += 2;
5874 for (p = input_basename; *p; p++)
5875 if (IS_DIR_SEPARATOR (*p))
5876 input_basename = p + 1;
5878 /* Find a suffix starting with the last period,
5879 and set basename_length to exclude that suffix. */
5880 basename_length = strlen (input_basename);
5881 suffixed_basename_length = basename_length;
5882 p = input_basename + basename_length;
5883 while (p != input_basename && *p != '.')
5885 if (*p == '.' && p != input_basename)
5887 basename_length = p - input_basename;
5888 input_suffix = p + 1;
5893 /* If a spec for 'g', 'u', or 'U' is seen with -save-temps then
5894 we will need to do a stat on the input_filename. The
5895 INPUT_STAT_SET signals that the stat is needed. */
5899 /* On fatal signals, delete all the temporary files. */
5902 fatal_error (int signum)
5904 signal (signum, SIG_DFL);
5905 delete_failure_queue ();
5906 delete_temp_files ();
5907 /* Get the same signal again, this time not handled,
5908 so its normal effect occurs. */
5909 kill (getpid (), signum);
5912 extern int main (int, const char **);
5915 main (int argc, const char **argv)
5919 int linker_was_run = 0;
5920 int num_linker_inputs = 0;
5921 char *explicit_link_files;
5924 struct user_specs *uptr;
5926 p = argv[0] + strlen (argv[0]);
5927 while (p != argv[0] && !IS_DIR_SEPARATOR (p[-1]))
5931 xmalloc_set_program_name (programname);
5933 #ifdef GCC_DRIVER_HOST_INITIALIZATION
5934 /* Perform host dependent initialization when needed. */
5935 GCC_DRIVER_HOST_INITIALIZATION;
5938 gcc_init_libintl ();
5940 if (signal (SIGINT, SIG_IGN) != SIG_IGN)
5941 signal (SIGINT, fatal_error);
5943 if (signal (SIGHUP, SIG_IGN) != SIG_IGN)
5944 signal (SIGHUP, fatal_error);
5946 if (signal (SIGTERM, SIG_IGN) != SIG_IGN)
5947 signal (SIGTERM, fatal_error);
5949 if (signal (SIGPIPE, SIG_IGN) != SIG_IGN)
5950 signal (SIGPIPE, fatal_error);
5953 /* We *MUST* set SIGCHLD to SIG_DFL so that the wait4() call will
5954 receive the signal. A different setting is inheritable */
5955 signal (SIGCHLD, SIG_DFL);
5958 /* Allocate the argument vector. */
5961 obstack_init (&obstack);
5963 /* Build multilib_select, et. al from the separate lines that make up each
5964 multilib selection. */
5966 const char *const *q = multilib_raw;
5969 obstack_init (&multilib_obstack);
5970 while ((p = *q++) != (char *) 0)
5971 obstack_grow (&multilib_obstack, p, strlen (p));
5973 obstack_1grow (&multilib_obstack, 0);
5974 multilib_select = obstack_finish (&multilib_obstack);
5976 q = multilib_matches_raw;
5977 while ((p = *q++) != (char *) 0)
5978 obstack_grow (&multilib_obstack, p, strlen (p));
5980 obstack_1grow (&multilib_obstack, 0);
5981 multilib_matches = obstack_finish (&multilib_obstack);
5983 q = multilib_exclusions_raw;
5984 while ((p = *q++) != (char *) 0)
5985 obstack_grow (&multilib_obstack, p, strlen (p));
5987 obstack_1grow (&multilib_obstack, 0);
5988 multilib_exclusions = obstack_finish (&multilib_obstack);
5991 for (i = 0; i < ARRAY_SIZE (multilib_defaults_raw); i++)
5994 obstack_1grow (&multilib_obstack, ' ');
5995 obstack_grow (&multilib_obstack,
5996 multilib_defaults_raw[i],
5997 strlen (multilib_defaults_raw[i]));
6001 obstack_1grow (&multilib_obstack, 0);
6002 multilib_defaults = obstack_finish (&multilib_obstack);
6005 /* Set up to remember the pathname of gcc and any options
6006 needed for collect. We use argv[0] instead of programname because
6007 we need the complete pathname. */
6008 obstack_init (&collect_obstack);
6009 obstack_grow (&collect_obstack, "COLLECT_GCC=", sizeof ("COLLECT_GCC=") - 1);
6010 obstack_grow (&collect_obstack, argv[0], strlen (argv[0]) + 1);
6011 putenv (obstack_finish (&collect_obstack));
6013 #ifdef INIT_ENVIRONMENT
6014 /* Set up any other necessary machine specific environment variables. */
6015 putenv (INIT_ENVIRONMENT);
6018 /* Make a table of what switches there are (switches, n_switches).
6019 Make a table of specified input files (infiles, n_infiles).
6020 Decode switches that are handled locally. */
6022 process_command (argc, argv);
6024 /* Initialize the vector of specs to just the default.
6025 This means one element containing 0s, as a terminator. */
6027 compilers = xmalloc (sizeof default_compilers);
6028 memcpy (compilers, default_compilers, sizeof default_compilers);
6029 n_compilers = n_default_compilers;
6031 /* Read specs from a file if there is one. */
6033 machine_suffix = concat (spec_machine, dir_separator_str,
6034 spec_version, dir_separator_str, NULL);
6035 just_machine_suffix = concat (spec_machine, dir_separator_str, NULL);
6037 specs_file = find_a_file (&startfile_prefixes, "specs", R_OK, 0);
6038 /* Read the specs file unless it is a default one. */
6039 if (specs_file != 0 && strcmp (specs_file, "specs"))
6040 read_specs (specs_file, TRUE);
6044 /* We need to check standard_exec_prefix/just_machine_suffix/specs
6045 for any override of as, ld and libraries. */
6046 specs_file = alloca (strlen (standard_exec_prefix)
6047 + strlen (just_machine_suffix) + sizeof ("specs"));
6049 strcpy (specs_file, standard_exec_prefix);
6050 strcat (specs_file, just_machine_suffix);
6051 strcat (specs_file, "specs");
6052 if (access (specs_file, R_OK) == 0)
6053 read_specs (specs_file, TRUE);
6055 /* Process any configure-time defaults specified for the command line
6056 options, via OPTION_DEFAULT_SPECS. */
6057 for (i = 0; i < ARRAY_SIZE (option_default_specs); i++)
6058 do_option_spec (option_default_specs[i].name,
6059 option_default_specs[i].spec);
6061 /* Process DRIVER_SELF_SPECS, adding any new options to the end
6062 of the command line. */
6064 for (i = 0; i < ARRAY_SIZE (driver_self_specs); i++)
6065 do_self_spec (driver_self_specs[i]);
6067 /* If not cross-compiling, look for executables in the standard
6069 if (*cross_compile == '0')
6071 if (*md_exec_prefix)
6073 add_prefix (&exec_prefixes, md_exec_prefix, "GCC",
6074 PREFIX_PRIORITY_LAST, 0, NULL, 0);
6078 /* Process sysroot_suffix_spec. */
6079 if (*sysroot_suffix_spec != 0
6080 && do_spec_2 (sysroot_suffix_spec) == 0)
6082 if (argbuf_index > 1)
6083 error ("spec failure: more than one arg to SYSROOT_SUFFIX_SPEC.");
6084 else if (argbuf_index == 1)
6085 target_sysroot_suffix = xstrdup (argbuf[argbuf_index -1]);
6088 /* Process sysroot_hdrs_suffix_spec. */
6089 if (*sysroot_hdrs_suffix_spec != 0
6090 && do_spec_2 (sysroot_hdrs_suffix_spec) == 0)
6092 if (argbuf_index > 1)
6093 error ("spec failure: more than one arg to SYSROOT_HEADERS_SUFFIX_SPEC.");
6094 else if (argbuf_index == 1)
6095 target_sysroot_hdrs_suffix = xstrdup (argbuf[argbuf_index -1]);
6098 /* Look for startfiles in the standard places. */
6099 if (*startfile_prefix_spec != 0
6100 && do_spec_2 (startfile_prefix_spec) == 0
6101 && do_spec_1 (" ", 0, NULL) == 0)
6104 for (ndx = 0; ndx < argbuf_index; ndx++)
6105 add_sysrooted_prefix (&startfile_prefixes, argbuf[ndx], "BINUTILS",
6106 PREFIX_PRIORITY_LAST, 0, NULL, 1);
6108 /* We should eventually get rid of all these and stick to
6109 startfile_prefix_spec exclusively. */
6110 else if (*cross_compile == '0' || target_system_root)
6112 if (*md_exec_prefix)
6113 add_sysrooted_prefix (&startfile_prefixes, md_exec_prefix, "GCC",
6114 PREFIX_PRIORITY_LAST, 0, NULL, 1);
6116 if (*md_startfile_prefix)
6117 add_sysrooted_prefix (&startfile_prefixes, md_startfile_prefix,
6118 "GCC", PREFIX_PRIORITY_LAST, 0, NULL, 1);
6120 if (*md_startfile_prefix_1)
6121 add_sysrooted_prefix (&startfile_prefixes, md_startfile_prefix_1,
6122 "GCC", PREFIX_PRIORITY_LAST, 0, NULL, 1);
6124 /* If standard_startfile_prefix is relative, base it on
6125 standard_exec_prefix. This lets us move the installed tree
6126 as a unit. If GCC_EXEC_PREFIX is defined, base
6127 standard_startfile_prefix on that as well.
6129 If the prefix is relative, only search it for native compilers;
6130 otherwise we will search a directory containing host libraries. */
6131 if (IS_ABSOLUTE_PATH (standard_startfile_prefix))
6132 add_sysrooted_prefix (&startfile_prefixes,
6133 standard_startfile_prefix, "BINUTILS",
6134 PREFIX_PRIORITY_LAST, 0, NULL, 1);
6135 else if (*cross_compile == '0')
6137 if (gcc_exec_prefix)
6138 add_prefix (&startfile_prefixes,
6139 concat (gcc_exec_prefix, machine_suffix,
6140 standard_startfile_prefix, NULL),
6141 NULL, PREFIX_PRIORITY_LAST, 0, NULL, 1);
6142 add_prefix (&startfile_prefixes,
6143 concat (standard_exec_prefix,
6145 standard_startfile_prefix, NULL),
6146 NULL, PREFIX_PRIORITY_LAST, 0, NULL, 1);
6149 add_sysrooted_prefix (&startfile_prefixes, standard_startfile_prefix_1,
6150 "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL, 1);
6151 add_sysrooted_prefix (&startfile_prefixes, standard_startfile_prefix_2,
6152 "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL, 1);
6153 #if 0 /* Can cause surprises, and one can use -B./ instead. */
6154 add_prefix (&startfile_prefixes, "./", NULL,
6155 PREFIX_PRIORITY_LAST, 1, NULL, 0);
6159 /* Process any user specified specs in the order given on the command
6161 for (uptr = user_specs_head; uptr; uptr = uptr->next)
6163 char *filename = find_a_file (&startfile_prefixes, uptr->filename,
6165 read_specs (filename ? filename : uptr->filename, FALSE);
6168 /* If we have a GCC_EXEC_PREFIX envvar, modify it for cpp's sake. */
6169 if (gcc_exec_prefix)
6170 gcc_exec_prefix = concat (gcc_exec_prefix, spec_machine, dir_separator_str,
6171 spec_version, dir_separator_str, NULL);
6173 /* Now we have the specs.
6174 Set the `valid' bits for switches that match anything in any spec. */
6176 validate_all_switches ();
6178 /* Now that we have the switches and the specs, set
6179 the subdirectory based on the options. */
6180 set_multilib_dir ();
6182 /* Warn about any switches that no pass was interested in. */
6184 for (i = 0; (int) i < n_switches; i++)
6185 if (! switches[i].validated)
6186 error ("unrecognized option `-%s'", switches[i].part1);
6188 /* Obey some of the options. */
6190 if (print_search_dirs)
6192 printf (_("install: %s%s\n"), standard_exec_prefix, machine_suffix);
6193 printf (_("programs: %s\n"), build_search_list (&exec_prefixes, "", 0));
6194 printf (_("libraries: %s\n"), build_search_list (&startfile_prefixes, "", 0));
6198 if (print_file_name)
6200 printf ("%s\n", find_file (print_file_name));
6204 if (print_prog_name)
6206 char *newname = find_a_file (&exec_prefixes, print_prog_name, X_OK, 0);
6207 printf ("%s\n", (newname ? newname : print_prog_name));
6211 if (print_multi_lib)
6213 print_multilib_info ();
6217 if (print_multi_directory)
6219 if (multilib_dir == NULL)
6222 printf ("%s\n", multilib_dir);
6226 if (print_multi_os_directory)
6228 if (multilib_os_dir == NULL)
6231 printf ("%s\n", multilib_os_dir);
6235 if (target_help_flag)
6237 /* Print if any target specific options. */
6239 /* We do not exit here. Instead we have created a fake input file
6240 called 'target-dummy' which needs to be compiled, and we pass this
6241 on to the various sub-processes, along with the --target-help
6245 if (print_help_list)
6251 printf (_("\nFor bug reporting instructions, please see:\n"));
6252 printf ("%s.\n", bug_report_url);
6257 /* We do not exit here. Instead we have created a fake input file
6258 called 'help-dummy' which needs to be compiled, and we pass this
6259 on the various sub-processes, along with the --help switch. */
6267 notice ("Configured with: %s\n", configuration_arguments);
6269 #ifdef THREAD_MODEL_SPEC
6270 /* We could have defined THREAD_MODEL_SPEC to "%*" by default,
6271 but there's no point in doing all this processing just to get
6272 thread_model back. */
6273 obstack_init (&obstack);
6274 do_spec_1 (THREAD_MODEL_SPEC, 0, thread_model);
6275 obstack_1grow (&obstack, '\0');
6276 thrmod = obstack_finish (&obstack);
6278 thrmod = thread_model;
6281 notice ("Thread model: %s\n", thrmod);
6283 /* compiler_version is truncated at the first space when initialized
6284 from version string, so truncate version_string at the first space
6285 before comparing. */
6286 for (n = 0; version_string[n]; n++)
6287 if (version_string[n] == ' ')
6290 if (! strncmp (version_string, compiler_version, n)
6291 && compiler_version[n] == 0)
6292 notice ("gcc version %s\n", version_string);
6294 notice ("gcc driver version %s executing gcc version %s\n",
6295 version_string, compiler_version);
6301 if (n_infiles == added_libraries)
6302 fatal ("no input files");
6304 /* Make a place to record the compiler output file names
6305 that correspond to the input files. */
6308 i += lang_specific_extra_outfiles;
6309 outfiles = xcalloc (i, sizeof (char *));
6311 /* Record which files were specified explicitly as link input. */
6313 explicit_link_files = xcalloc (1, n_infiles);
6317 int lang_n_infiles = 0;
6318 for (i = 0; (int) i < n_infiles; i++)
6320 const char *name = infiles[i].name;
6321 struct compiler *compiler
6322 = lookup_compiler (name, strlen (name), infiles[i].language);
6323 if (compiler == NULL)
6324 error ("%s: linker input file unused because linking not done",
6326 else if (lang_n_infiles > 0 && compiler != input_file_compiler)
6327 fatal ("cannot specify -o with -c or -S and multiple languages");
6331 input_file_compiler = compiler;
6336 for (i = 0; (int) i < (combine_inputs ? 1 : n_infiles); i++)
6338 int this_file_error = 0;
6340 /* Tell do_spec what to substitute for %i. */
6342 input_file_number = i;
6343 set_input (infiles[i].name);
6345 /* Use the same thing in %o, unless cp->spec says otherwise. */
6347 outfiles[i] = input_filename;
6349 /* Figure out which compiler from the file's suffix. */
6351 if (! combine_inputs)
6353 = lookup_compiler (infiles[i].name, input_filename_length,
6354 infiles[i].language);
6356 if (input_file_compiler)
6358 /* Ok, we found an applicable compiler. Run its spec. */
6360 if (input_file_compiler->spec[0] == '#')
6362 error ("%s: %s compiler not installed on this system",
6363 input_filename, &input_file_compiler->spec[1]);
6364 this_file_error = 1;
6368 value = do_spec (input_file_compiler->spec);
6370 this_file_error = 1;
6374 /* If this file's name does not contain a recognized suffix,
6375 record it as explicit linker input. */
6378 explicit_link_files[i] = 1;
6380 /* Clear the delete-on-failure queue, deleting the files in it
6381 if this compilation failed. */
6383 if (this_file_error)
6385 delete_failure_queue ();
6388 /* If this compilation succeeded, don't delete those files later. */
6389 clear_failure_queue ();
6392 /* Reset the output file name to the first input file name, for use
6393 with %b in LINK_SPEC on a target that prefers not to emit a.out
6396 set_input (infiles[0].name);
6398 if (error_count == 0)
6400 /* Make sure INPUT_FILE_NUMBER points to first available open
6402 input_file_number = n_infiles;
6403 if (lang_specific_pre_link ())
6407 /* Determine if there are any linker input files. */
6408 num_linker_inputs = 0;
6409 for (i = 0; (int) i < n_infiles; i++)
6410 if (explicit_link_files[i] || outfiles[i] != NULL)
6411 num_linker_inputs++;
6413 /* Run ld to link all the compiler output files. */
6415 if (num_linker_inputs > 0 && error_count == 0)
6417 int tmp = execution_count;
6419 /* We'll use ld if we can't find collect2. */
6420 if (! strcmp (linker_name_spec, "collect2"))
6422 char *s = find_a_file (&exec_prefixes, "collect2", X_OK, 0);
6424 linker_name_spec = "ld";
6426 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
6428 putenv_from_prefixes (&exec_prefixes, "COMPILER_PATH");
6429 putenv_from_prefixes (&startfile_prefixes, LIBRARY_PATH_ENV);
6431 value = do_spec (link_command_spec);
6434 linker_was_run = (tmp != execution_count);
6437 /* If options said don't run linker,
6438 complain about input files to be given to the linker. */
6440 if (! linker_was_run && error_count == 0)
6441 for (i = 0; (int) i < n_infiles; i++)
6442 if (explicit_link_files[i])
6443 error ("%s: linker input file unused because linking not done",
6446 /* Delete some or all of the temporary files we made. */
6449 delete_failure_queue ();
6450 delete_temp_files ();
6452 if (print_help_list)
6454 printf (("\nFor bug reporting instructions, please see:\n"));
6455 printf ("%s\n", bug_report_url);
6458 return (signal_count != 0 ? 2
6459 : error_count > 0 ? (pass_exit_codes ? greatest_status : 1)
6463 /* Find the proper compilation spec for the file name NAME,
6464 whose length is LENGTH. LANGUAGE is the specified language,
6465 or 0 if this file is to be passed to the linker. */
6467 static struct compiler *
6468 lookup_compiler (const char *name, size_t length, const char *language)
6470 struct compiler *cp;
6472 /* If this was specified by the user to be a linker input, indicate that. */
6473 if (language != 0 && language[0] == '*')
6476 /* Otherwise, look for the language, if one is spec'd. */
6479 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6480 if (cp->suffix[0] == '@' && !strcmp (cp->suffix + 1, language))
6483 error ("language %s not recognized", language);
6487 /* Look for a suffix. */
6488 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6490 if (/* The suffix `-' matches only the file name `-'. */
6491 (!strcmp (cp->suffix, "-") && !strcmp (name, "-"))
6492 || (strlen (cp->suffix) < length
6493 /* See if the suffix matches the end of NAME. */
6494 && !strcmp (cp->suffix,
6495 name + length - strlen (cp->suffix))
6500 #if defined (OS2) ||defined (HAVE_DOS_BASED_FILE_SYSTEM)
6501 /* look again, but case-insensitively this time. */
6503 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6505 if (/* The suffix `-' matches only the file name `-'. */
6506 (!strcmp (cp->suffix, "-") && !strcmp (name, "-"))
6507 || (strlen (cp->suffix) < length
6508 /* See if the suffix matches the end of NAME. */
6509 && ((!strcmp (cp->suffix,
6510 name + length - strlen (cp->suffix))
6511 || !strpbrk (cp->suffix, "ABCDEFGHIJKLMNOPQRSTUVWXYZ"))
6512 && !strcasecmp (cp->suffix,
6513 name + length - strlen (cp->suffix)))
6519 if (cp >= compilers)
6521 if (cp->spec[0] != '@')
6522 /* A non-alias entry: return it. */
6525 /* An alias entry maps a suffix to a language.
6526 Search for the language; pass 0 for NAME and LENGTH
6527 to avoid infinite recursion if language not found. */
6528 return lookup_compiler (NULL, 0, cp->spec + 1);
6534 save_string (const char *s, int len)
6536 char *result = xmalloc (len + 1);
6538 memcpy (result, s, len);
6544 pfatal_with_name (const char *name)
6546 perror_with_name (name);
6547 delete_temp_files ();
6552 perror_with_name (const char *name)
6554 error ("%s: %s", name, xstrerror (errno));
6558 pfatal_pexecute (const char *errmsg_fmt, const char *errmsg_arg)
6562 int save_errno = errno;
6564 /* Space for trailing '\0' is in %s. */
6565 char *msg = xmalloc (strlen (errmsg_fmt) + strlen (errmsg_arg));
6566 sprintf (msg, errmsg_fmt, errmsg_arg);
6572 pfatal_with_name (errmsg_fmt);
6575 /* Output an error message and exit. */
6580 fatal ("internal gcc abort");
6583 /* Output an error message and exit. */
6586 fatal (const char *msgid, ...)
6590 va_start (ap, msgid);
6592 fprintf (stderr, "%s: ", programname);
6593 vfprintf (stderr, _(msgid), ap);
6595 fprintf (stderr, "\n");
6596 delete_temp_files ();
6601 error (const char *msgid, ...)
6605 va_start (ap, msgid);
6606 fprintf (stderr, "%s: ", programname);
6607 vfprintf (stderr, _(msgid), ap);
6610 fprintf (stderr, "\n");
6614 notice (const char *msgid, ...)
6618 va_start (ap, msgid);
6619 vfprintf (stderr, _(msgid), ap);
6624 validate_switches_from_spec (const char *spec)
6626 const char *p = spec;
6629 if (c == '%' && (*p == '{' || *p == '<' || (*p == 'W' && *++p == '{')))
6630 /* We have a switch spec. */
6631 p = validate_switches (p + 1);
6635 validate_all_switches (void)
6637 struct compiler *comp;
6638 struct spec_list *spec;
6640 for (comp = compilers; comp->spec; comp++)
6641 validate_switches_from_spec (comp->spec);
6643 /* Look through the linked list of specs read from the specs file. */
6644 for (spec = specs; spec; spec = spec->next)
6645 validate_switches_from_spec (*spec->ptr_spec);
6647 validate_switches_from_spec (link_command_spec);
6650 /* Look at the switch-name that comes after START
6651 and mark as valid all supplied switches that match it. */
6654 validate_switches (const char *start)
6656 const char *p = start;
6660 bool suffix = false;
6661 bool starred = false;
6663 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
6676 while (ISIDNUM (*p) || *p == '-' || *p == '+' || *p == '='
6677 || *p == ',' || *p == '.' || *p == '@')
6682 starred = true, p++;
6688 /* Mark all matching switches as valid. */
6689 for (i = 0; i < n_switches; i++)
6690 if (!strncmp (switches[i].part1, atom, len)
6691 && (starred || switches[i].part1[len] == 0))
6692 switches[i].validated = 1;
6696 if (*p && (p[-1] == '|' || p[-1] == '&'))
6699 if (*p && p[-1] == ':')
6701 while (*p && *p != ';' && *p != '}')
6706 if (*p == '{' || *p == '<')
6707 p = validate_switches (p+1);
6708 else if (p[0] == 'W' && p[1] == '{')
6709 p = validate_switches (p+2);
6716 if (*p && p[-1] == ';')
6730 static struct mdswitchstr *mdswitches;
6731 static int n_mdswitches;
6733 /* Check whether a particular argument was used. The first time we
6734 canonicalize the switches to keep only the ones we care about. */
6737 used_arg (const char *p, int len)
6742 const char *replace;
6747 static struct mswitchstr *mswitches;
6748 static int n_mswitches;
6753 struct mswitchstr *matches;
6757 /* Break multilib_matches into the component strings of string
6758 and replacement string. */
6759 for (q = multilib_matches; *q != '\0'; q++)
6763 matches = alloca ((sizeof (struct mswitchstr)) * cnt);
6765 q = multilib_matches;
6775 matches[i].len = q - matches[i].str;
6777 matches[i].replace = ++q;
6778 while (*q != ';' && *q != '\0')
6784 matches[i].rep_len = q - matches[i].replace;
6790 /* Now build a list of the replacement string for switches that we care
6791 about. Make sure we allocate at least one entry. This prevents
6792 xmalloc from calling fatal, and prevents us from re-executing this
6795 = xmalloc (sizeof (struct mswitchstr)
6796 * (n_mdswitches + (n_switches ? n_switches : 1)));
6797 for (i = 0; i < n_switches; i++)
6799 int xlen = strlen (switches[i].part1);
6800 for (j = 0; j < cnt; j++)
6801 if (xlen == matches[j].len
6802 && ! strncmp (switches[i].part1, matches[j].str, xlen))
6804 mswitches[n_mswitches].str = matches[j].replace;
6805 mswitches[n_mswitches].len = matches[j].rep_len;
6806 mswitches[n_mswitches].replace = (char *) 0;
6807 mswitches[n_mswitches].rep_len = 0;
6813 /* Add MULTILIB_DEFAULTS switches too, as long as they were not present
6814 on the command line nor any options mutually incompatible with
6816 for (i = 0; i < n_mdswitches; i++)
6820 for (q = multilib_options; *q != '\0'; q++)
6826 while (strncmp (q, mdswitches[i].str, mdswitches[i].len) != 0
6827 || strchr (" /", q[mdswitches[i].len]) == NULL)
6829 while (*q != ' ' && *q != '/' && *q != '\0')
6836 if (*q != ' ' && *q != '\0')
6838 while (*r != ' ' && *r != '\0')
6841 while (*q != ' ' && *q != '/' && *q != '\0')
6844 if (used_arg (r, q - r))
6849 mswitches[n_mswitches].str = mdswitches[i].str;
6850 mswitches[n_mswitches].len = mdswitches[i].len;
6851 mswitches[n_mswitches].replace = (char *) 0;
6852 mswitches[n_mswitches].rep_len = 0;
6865 for (i = 0; i < n_mswitches; i++)
6866 if (len == mswitches[i].len && ! strncmp (p, mswitches[i].str, len))
6873 default_arg (const char *p, int len)
6877 for (i = 0; i < n_mdswitches; i++)
6878 if (len == mdswitches[i].len && ! strncmp (p, mdswitches[i].str, len))
6884 /* Work out the subdirectory to use based on the options. The format of
6885 multilib_select is a list of elements. Each element is a subdirectory
6886 name followed by a list of options followed by a semicolon. The format
6887 of multilib_exclusions is the same, but without the preceding
6888 directory. First gcc will check the exclusions, if none of the options
6889 beginning with an exclamation point are present, and all of the other
6890 options are present, then we will ignore this completely. Passing
6891 that, gcc will consider each multilib_select in turn using the same
6892 rules for matching the options. If a match is found, that subdirectory
6896 set_multilib_dir (void)
6899 unsigned int this_path_len;
6900 const char *this_path, *this_arg;
6901 const char *start, *end;
6903 int ok, ndfltok, first;
6906 start = multilib_defaults;
6907 while (*start == ' ' || *start == '\t')
6909 while (*start != '\0')
6912 while (*start != ' ' && *start != '\t' && *start != '\0')
6914 while (*start == ' ' || *start == '\t')
6922 mdswitches = xmalloc (sizeof (struct mdswitchstr) * n_mdswitches);
6923 for (start = multilib_defaults; *start != '\0'; start = end + 1)
6925 while (*start == ' ' || *start == '\t')
6931 for (end = start + 1;
6932 *end != ' ' && *end != '\t' && *end != '\0'; end++)
6935 obstack_grow (&multilib_obstack, start, end - start);
6936 obstack_1grow (&multilib_obstack, 0);
6937 mdswitches[i].str = obstack_finish (&multilib_obstack);
6938 mdswitches[i++].len = end - start;
6945 p = multilib_exclusions;
6948 /* Ignore newlines. */
6955 /* Check the arguments. */
6969 while (*p != ' ' && *p != ';')
6976 if (*this_arg != '!')
6984 ok = used_arg (this_arg, p - this_arg);
6999 p = multilib_select;
7002 /* Ignore newlines. */
7009 /* Get the initial path. */
7017 this_path_len = p - this_path;
7019 /* Check the arguments. */
7035 while (*p != ' ' && *p != ';')
7042 if (*this_arg != '!')
7050 /* If this is a default argument, we can just ignore it.
7051 This is true even if this_arg begins with '!'. Beginning
7052 with '!' does not mean that this argument is necessarily
7053 inappropriate for this library: it merely means that
7054 there is a more specific library which uses this
7055 argument. If this argument is a default, we need not
7056 consider that more specific library. */
7057 ok = used_arg (this_arg, p - this_arg);
7064 if (default_arg (this_arg, p - this_arg))
7073 if (this_path_len != 1
7074 || this_path[0] != '.')
7076 char *new_multilib_dir = xmalloc (this_path_len + 1);
7079 strncpy (new_multilib_dir, this_path, this_path_len);
7080 new_multilib_dir[this_path_len] = '\0';
7081 q = strchr (new_multilib_dir, ':');
7084 multilib_dir = new_multilib_dir;
7091 const char *q = this_path, *end = this_path + this_path_len;
7093 while (q < end && *q != ':')
7097 char *new_multilib_os_dir = xmalloc (end - q);
7098 memcpy (new_multilib_os_dir, q + 1, end - q - 1);
7099 new_multilib_os_dir[end - q - 1] = '\0';
7100 multilib_os_dir = new_multilib_os_dir;
7108 if (multilib_dir == NULL && multilib_os_dir != NULL
7109 && strcmp (multilib_os_dir, ".") == 0)
7111 free ((char *) multilib_os_dir);
7112 multilib_os_dir = NULL;
7114 else if (multilib_dir != NULL && multilib_os_dir == NULL)
7115 multilib_os_dir = multilib_dir;
7118 /* Print out the multiple library subdirectory selection
7119 information. This prints out a series of lines. Each line looks
7120 like SUBDIRECTORY;@OPTION@OPTION, with as many options as is
7121 required. Only the desired options are printed out, the negative
7122 matches. The options are print without a leading dash. There are
7123 no spaces to make it easy to use the information in the shell.
7124 Each subdirectory is printed only once. This assumes the ordering
7125 generated by the genmultilib script. Also, we leave out ones that match
7129 print_multilib_info (void)
7131 const char *p = multilib_select;
7132 const char *last_path = 0, *this_path;
7134 unsigned int last_path_len = 0;
7139 /* Ignore newlines. */
7146 /* Get the initial path. */
7155 /* When --disable-multilib was used but target defines
7156 MULTILIB_OSDIRNAMES, entries starting with .: are there just
7157 to find multilib_os_dir, so skip them from output. */
7158 if (this_path[0] == '.' && this_path[1] == ':')
7161 /* Check for matches with the multilib_exclusions. We don't bother
7162 with the '!' in either list. If any of the exclusion rules match
7163 all of its options with the select rule, we skip it. */
7165 const char *e = multilib_exclusions;
7166 const char *this_arg;
7171 /* Ignore newlines. */
7178 /* Check the arguments. */
7195 while (*e != ' ' && *e != ';')
7206 int len = e - this_arg;
7213 while (*q != ' ' && *q != ';')
7220 if (! strncmp (arg, this_arg, (len < q - arg) ? q - arg : len) ||
7221 default_arg (this_arg, e - this_arg))
7251 /* If this is a duplicate, skip it. */
7252 skip = (last_path != 0 && (unsigned int) (p - this_path) == last_path_len
7253 && ! strncmp (last_path, this_path, last_path_len));
7255 last_path = this_path;
7256 last_path_len = p - this_path;
7259 /* If this directory requires any default arguments, we can skip
7260 it. We will already have printed a directory identical to
7261 this one which does not require that default argument. */
7279 while (*q != ' ' && *q != ';')
7287 && default_arg (arg, q - arg))
7302 for (p1 = last_path; p1 < p && *p1 != ':'; p1++)
7321 use_arg = *p != '!';
7326 while (*p != ' ' && *p != ';')
7341 /* If there are extra options, print them now. */
7342 if (multilib_extra && *multilib_extra)
7344 int print_at = TRUE;
7347 for (q = multilib_extra; *q != '\0'; q++)
7368 /* if-exists built-in spec function.
7370 Checks to see if the file specified by the absolute pathname in
7371 ARGS exists. Returns that pathname if found.
7373 The usual use for this function is to check for a library file
7374 (whose name has been expanded with %s). */
7377 if_exists_spec_function (int argc, const char **argv)
7379 /* Must have only one argument. */
7380 if (argc == 1 && IS_ABSOLUTE_PATH (argv[0]) && ! access (argv[0], R_OK))
7386 /* if-exists-else built-in spec function.
7388 This is like if-exists, but takes an additional argument which
7389 is returned if the first argument does not exist. */
7392 if_exists_else_spec_function (int argc, const char **argv)
7394 /* Must have exactly two arguments. */
7398 if (IS_ABSOLUTE_PATH (argv[0]) && ! access (argv[0], R_OK))