1 /* Compiler driver program that can handle many languages.
2 Copyright (C) 1987, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
3 1999, 2000, 2001, 2002, 2003 Free Software Foundation, Inc.
5 This file is part of GCC.
7 GCC is free software; you can redistribute it and/or modify it under
8 the terms of the GNU General Public License as published by the Free
9 Software Foundation; either version 2, or (at your option) any later
12 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
13 WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
17 You should have received a copy of the GNU General Public License
18 along with GCC; see the file COPYING. If not, write to the Free
19 Software Foundation, 59 Temple Place - Suite 330, Boston, MA
22 This paragraph is here to try to keep Sun CC from dying.
23 The number of chars here seems crucial!!!! */
25 /* This program is the user interface to the C compiler and possibly to
26 other compilers. It is used because compilation is a complicated procedure
27 which involves running several programs and passing temporary files between
28 them, forwarding the users switches to those programs selectively,
29 and deleting the temporary files at the end.
31 CC recognizes how to compile each input file by suffixes in the file names.
32 Once it knows which kind of compilation to perform, the procedure for
33 compilation is specified by a string called a "spec". */
35 /* A Short Introduction to Adding a Command-Line Option.
37 Before adding a command-line option, consider if it is really
38 necessary. Each additional command-line option adds complexity and
39 is difficult to remove in subsequent versions.
41 In the following, consider adding the command-line argument
44 1. Each command-line option is specified in the specs file. The
45 notation is described below in the comment entitled "The Specs
48 2. In this file, add an entry to "option_map" equating the long
49 `--' argument version and any shorter, single letter version. Read
50 the comments in the declaration of "struct option_map" for an
51 explanation. Do not omit the first `-'.
53 3. Look in the "specs" file to determine which program or option
54 list should be given the argument, e.g., "cc1_options". Add the
55 appropriate syntax for the shorter option version to the
56 corresponding "const char *" entry in this file. Omit the first
57 `-' from the option. For example, use `-bar', rather than `--bar'.
59 4. If the argument takes an argument, e.g., `--baz argument1',
60 modify either DEFAULT_SWITCH_TAKES_ARG or
61 DEFAULT_WORD_SWITCH_TAKES_ARG in this file. Omit the first `-'
64 5. Document the option in this file's display_help(). If the
65 option is passed to a subprogram, modify its corresponding
66 function, e.g., cppinit.c:print_help() or toplev.c:display_help(),
69 6. Compile and test. Make sure that your new specs file is being
70 read. For example, use a debugger to investigate the value of
71 "specs_file" in main(). */
75 #include "coretypes.h"
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 *const *);
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 -auxbase%{c|S:%{o*:-strip %*}%{!o*: %b}}%{!c:%{!S: %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 "%{!shared:%{!shared-libgcc:", static_name, " ",
1535 eh_name, "}%{shared-libgcc:", shared_name, " ",
1536 static_name, "}}%{shared:",
1538 "%{shared-libgcc:", shared_name,
1539 "}%{!shared-libgcc:", static_name, "}",
1545 obstack_grow (obstack, buf, strlen (buf));
1548 #endif /* ENABLE_SHARED_LIBGCC */
1550 /* Initialize the specs lookup routines. */
1555 struct spec_list *next = (struct spec_list *) 0;
1556 struct spec_list *sl = (struct spec_list *) 0;
1560 return; /* Already initialized. */
1563 notice ("Using built-in specs.\n");
1566 extra_specs = xcalloc (sizeof (struct spec_list),
1567 ARRAY_SIZE (extra_specs_1));
1569 for (i = ARRAY_SIZE (extra_specs_1) - 1; i >= 0; i--)
1571 sl = &extra_specs[i];
1572 sl->name = extra_specs_1[i].name;
1573 sl->ptr = extra_specs_1[i].ptr;
1575 sl->name_len = strlen (sl->name);
1576 sl->ptr_spec = &sl->ptr;
1581 /* Initialize here, not in definition. The IRIX 6 O32 cc sometimes chokes
1582 on ?: in file-scope variable initializations. */
1583 asm_debug = ASM_DEBUG_SPEC;
1585 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--)
1587 sl = &static_specs[i];
1592 #ifdef ENABLE_SHARED_LIBGCC
1593 /* ??? If neither -shared-libgcc nor --static-libgcc was
1594 seen, then we should be making an educated guess. Some proposed
1595 heuristics for ELF include:
1597 (1) If "-Wl,--export-dynamic", then it's a fair bet that the
1598 program will be doing dynamic loading, which will likely
1599 need the shared libgcc.
1601 (2) If "-ldl", then it's also a fair bet that we're doing
1604 (3) For each ET_DYN we're linking against (either through -lfoo
1605 or /some/path/foo.so), check to see whether it or one of
1606 its dependencies depends on a shared libgcc.
1610 If the runtime is fixed to look for program headers instead
1611 of calling __register_frame_info at all, for each object,
1612 use the shared libgcc if any EH symbol referenced.
1614 If crtstuff is fixed to not invoke __register_frame_info
1615 automatically, for each object, use the shared libgcc if
1616 any non-empty unwind section found.
1618 Doing any of this probably requires invoking an external program to
1619 do the actual object file scanning. */
1621 const char *p = libgcc_spec;
1624 /* Transform the extant libgcc_spec into one that uses the shared libgcc
1625 when given the proper command line arguments. */
1628 if (in_sep && *p == '-' && strncmp (p, "-lgcc", 5) == 0)
1630 init_gcc_specs (&obstack,
1631 #ifdef NO_SHARED_LIBGCC_MULTILIB
1636 #ifdef USE_LIBUNWIND_EXCEPTIONS
1642 #ifdef USE_LIBUNWIND_EXCEPTIONS
1650 else if (in_sep && *p == 'l' && strncmp (p, "libgcc.a%s", 10) == 0)
1652 /* Ug. We don't know shared library extensions. Hope that
1653 systems that use this form don't do shared libraries. */
1654 init_gcc_specs (&obstack,
1655 #ifdef NO_SHARED_LIBGCC_MULTILIB
1660 #ifdef USE_LIBUNWIND_EXCEPTIONS
1666 #ifdef USE_LIBUNWIND_EXCEPTIONS
1675 obstack_1grow (&obstack, *p);
1676 in_sep = (*p == ' ');
1681 obstack_1grow (&obstack, '\0');
1682 libgcc_spec = obstack_finish (&obstack);
1685 #ifdef USE_AS_TRADITIONAL_FORMAT
1686 /* Prepend "--traditional-format" to whatever asm_spec we had before. */
1688 static const char tf[] = "--traditional-format ";
1689 obstack_grow (&obstack, tf, sizeof(tf) - 1);
1690 obstack_grow0 (&obstack, asm_spec, strlen (asm_spec));
1691 asm_spec = obstack_finish (&obstack);
1695 /* Prepend LINK_EH_SPEC to whatever link_spec we had before. */
1696 obstack_grow (&obstack, LINK_EH_SPEC, sizeof(LINK_EH_SPEC) - 1);
1697 obstack_grow0 (&obstack, link_spec, strlen (link_spec));
1698 link_spec = obstack_finish (&obstack);
1704 /* Change the value of spec NAME to SPEC. If SPEC is empty, then the spec is
1705 removed; If the spec starts with a + then SPEC is added to the end of the
1709 set_spec (const char *name, const char *spec)
1711 struct spec_list *sl;
1712 const char *old_spec;
1713 int name_len = strlen (name);
1716 /* If this is the first call, initialize the statically allocated specs. */
1719 struct spec_list *next = (struct spec_list *) 0;
1720 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--)
1722 sl = &static_specs[i];
1729 /* See if the spec already exists. */
1730 for (sl = specs; sl; sl = sl->next)
1731 if (name_len == sl->name_len && !strcmp (sl->name, name))
1736 /* Not found - make it. */
1737 sl = xmalloc (sizeof (struct spec_list));
1738 sl->name = xstrdup (name);
1739 sl->name_len = name_len;
1740 sl->ptr_spec = &sl->ptr;
1742 *(sl->ptr_spec) = "";
1747 old_spec = *(sl->ptr_spec);
1748 *(sl->ptr_spec) = ((spec[0] == '+' && ISSPACE ((unsigned char)spec[1]))
1749 ? concat (old_spec, spec + 1, NULL)
1754 notice ("Setting spec %s to '%s'\n\n", name, *(sl->ptr_spec));
1757 /* Free the old spec. */
1758 if (old_spec && sl->alloc_p)
1759 free ((void *) old_spec);
1764 /* Accumulate a command (program name and args), and run it. */
1766 /* Vector of pointers to arguments in the current line of specifications. */
1768 static const char **argbuf;
1770 /* Number of elements allocated in argbuf. */
1772 static int argbuf_length;
1774 /* Number of elements in argbuf currently in use (containing args). */
1776 static int argbuf_index;
1778 /* This is the list of suffixes and codes (%g/%u/%U/%j) and the associated
1779 temp file. If the HOST_BIT_BUCKET is used for %j, no entry is made for
1782 static struct temp_name {
1783 const char *suffix; /* suffix associated with the code. */
1784 int length; /* strlen (suffix). */
1785 int unique; /* Indicates whether %g or %u/%U was used. */
1786 const char *filename; /* associated filename. */
1787 int filename_length; /* strlen (filename). */
1788 struct temp_name *next;
1791 /* Number of commands executed so far. */
1793 static int execution_count;
1795 /* Number of commands that exited with a signal. */
1797 static int signal_count;
1799 /* Name with which this program was invoked. */
1801 static const char *programname;
1803 /* Allocate the argument vector. */
1809 argbuf = xmalloc (argbuf_length * sizeof (const char *));
1812 /* Clear out the vector of arguments (after a command is executed). */
1820 /* Add one argument to the vector at the end.
1821 This is done when a space is seen or at the end of the line.
1822 If DELETE_ALWAYS is nonzero, the arg is a filename
1823 and the file should be deleted eventually.
1824 If DELETE_FAILURE is nonzero, the arg is a filename
1825 and the file should be deleted if this compilation fails. */
1828 store_arg (const char *arg, int delete_always, int delete_failure)
1830 if (argbuf_index + 1 == argbuf_length)
1831 argbuf = xrealloc (argbuf, (argbuf_length *= 2) * sizeof (const char *));
1833 argbuf[argbuf_index++] = arg;
1834 argbuf[argbuf_index] = 0;
1836 if (delete_always || delete_failure)
1837 record_temp_file (arg, delete_always, delete_failure);
1840 /* Load specs from a file name named FILENAME, replacing occurrences of
1841 various different types of line-endings, \r\n, \n\r and just \r, with
1845 load_specs (const char *filename)
1849 struct stat statbuf;
1856 notice ("Reading specs from %s\n", filename);
1858 /* Open and stat the file. */
1859 desc = open (filename, O_RDONLY, 0);
1861 pfatal_with_name (filename);
1862 if (stat (filename, &statbuf) < 0)
1863 pfatal_with_name (filename);
1865 /* Read contents of file into BUFFER. */
1866 buffer = xmalloc ((unsigned) statbuf.st_size + 1);
1867 readlen = read (desc, buffer, (unsigned) statbuf.st_size);
1869 pfatal_with_name (filename);
1870 buffer[readlen] = 0;
1873 specs = xmalloc (readlen + 1);
1875 for (buffer_p = buffer; buffer_p && *buffer_p; buffer_p++)
1881 if (buffer_p > buffer && *(buffer_p - 1) == '\n') /* \n\r */
1883 else if (*(buffer_p + 1) == '\n') /* \r\n */
1897 /* Read compilation specs from a file named FILENAME,
1898 replacing the default ones.
1900 A suffix which starts with `*' is a definition for
1901 one of the machine-specific sub-specs. The "suffix" should be
1902 *asm, *cc1, *cpp, *link, *startfile, etc.
1903 The corresponding spec is stored in asm_spec, etc.,
1904 rather than in the `compilers' vector.
1906 Anything invalid in the file is a fatal error. */
1909 read_specs (const char *filename, int main_p)
1914 buffer = load_specs (filename);
1916 /* Scan BUFFER for specs, putting them in the vector. */
1922 char *in, *out, *p1, *p2, *p3;
1924 /* Advance P in BUFFER to the next nonblank nocomment line. */
1925 p = skip_whitespace (p);
1929 /* Is this a special command that starts with '%'? */
1930 /* Don't allow this for the main specs file, since it would
1931 encourage people to overwrite it. */
1932 if (*p == '%' && !main_p)
1935 while (*p && *p != '\n')
1941 if (!strncmp (p1, "%include", sizeof ("%include") - 1)
1942 && (p1[sizeof "%include" - 1] == ' '
1943 || p1[sizeof "%include" - 1] == '\t'))
1947 p1 += sizeof ("%include");
1948 while (*p1 == ' ' || *p1 == '\t')
1951 if (*p1++ != '<' || p[-2] != '>')
1952 fatal ("specs %%include syntax malformed after %ld characters",
1953 (long) (p1 - buffer + 1));
1956 new_filename = find_a_file (&startfile_prefixes, p1, R_OK, 0);
1957 read_specs (new_filename ? new_filename : p1, FALSE);
1960 else if (!strncmp (p1, "%include_noerr", sizeof "%include_noerr" - 1)
1961 && (p1[sizeof "%include_noerr" - 1] == ' '
1962 || p1[sizeof "%include_noerr" - 1] == '\t'))
1966 p1 += sizeof "%include_noerr";
1967 while (*p1 == ' ' || *p1 == '\t')
1970 if (*p1++ != '<' || p[-2] != '>')
1971 fatal ("specs %%include syntax malformed after %ld characters",
1972 (long) (p1 - buffer + 1));
1975 new_filename = find_a_file (&startfile_prefixes, p1, R_OK, 0);
1977 read_specs (new_filename, FALSE);
1978 else if (verbose_flag)
1979 notice ("could not find specs file %s\n", p1);
1982 else if (!strncmp (p1, "%rename", sizeof "%rename" - 1)
1983 && (p1[sizeof "%rename" - 1] == ' '
1984 || p1[sizeof "%rename" - 1] == '\t'))
1987 struct spec_list *sl;
1988 struct spec_list *newsl;
1990 /* Get original name. */
1991 p1 += sizeof "%rename";
1992 while (*p1 == ' ' || *p1 == '\t')
1995 if (! ISALPHA ((unsigned char) *p1))
1996 fatal ("specs %%rename syntax malformed after %ld characters",
1997 (long) (p1 - buffer));
2000 while (*p2 && !ISSPACE ((unsigned char) *p2))
2003 if (*p2 != ' ' && *p2 != '\t')
2004 fatal ("specs %%rename syntax malformed after %ld characters",
2005 (long) (p2 - buffer));
2009 while (*p2 == ' ' || *p2 == '\t')
2012 if (! ISALPHA ((unsigned char) *p2))
2013 fatal ("specs %%rename syntax malformed after %ld characters",
2014 (long) (p2 - buffer));
2016 /* Get new spec name. */
2018 while (*p3 && !ISSPACE ((unsigned char) *p3))
2022 fatal ("specs %%rename syntax malformed after %ld characters",
2023 (long) (p3 - buffer));
2026 for (sl = specs; sl; sl = sl->next)
2027 if (name_len == sl->name_len && !strcmp (sl->name, p1))
2031 fatal ("specs %s spec was not found to be renamed", p1);
2033 if (strcmp (p1, p2) == 0)
2036 for (newsl = specs; newsl; newsl = newsl->next)
2037 if (strcmp (newsl->name, p2) == 0)
2038 fatal ("%s: attempt to rename spec '%s' to already defined spec '%s'",
2043 notice ("rename spec %s to %s\n", p1, p2);
2045 notice ("spec is '%s'\n\n", *(sl->ptr_spec));
2049 set_spec (p2, *(sl->ptr_spec));
2051 free ((void *) *(sl->ptr_spec));
2053 *(sl->ptr_spec) = "";
2058 fatal ("specs unknown %% command after %ld characters",
2059 (long) (p1 - buffer));
2062 /* Find the colon that should end the suffix. */
2064 while (*p1 && *p1 != ':' && *p1 != '\n')
2067 /* The colon shouldn't be missing. */
2069 fatal ("specs file malformed after %ld characters",
2070 (long) (p1 - buffer));
2072 /* Skip back over trailing whitespace. */
2074 while (p2 > buffer && (p2[-1] == ' ' || p2[-1] == '\t'))
2077 /* Copy the suffix to a string. */
2078 suffix = save_string (p, p2 - p);
2079 /* Find the next line. */
2080 p = skip_whitespace (p1 + 1);
2082 fatal ("specs file malformed after %ld characters",
2083 (long) (p - buffer));
2086 /* Find next blank line or end of string. */
2087 while (*p1 && !(*p1 == '\n' && (p1[1] == '\n' || p1[1] == '\0')))
2090 /* Specs end at the blank line and do not include the newline. */
2091 spec = save_string (p, p1 - p);
2094 /* Delete backslash-newline sequences from the spec. */
2099 if (in[0] == '\\' && in[1] == '\n')
2101 else if (in[0] == '#')
2102 while (*in && *in != '\n')
2110 if (suffix[0] == '*')
2112 if (! strcmp (suffix, "*link_command"))
2113 link_command_spec = spec;
2115 set_spec (suffix + 1, spec);
2119 /* Add this pair to the vector. */
2121 = xrealloc (compilers,
2122 (n_compilers + 2) * sizeof (struct compiler));
2124 compilers[n_compilers].suffix = suffix;
2125 compilers[n_compilers].spec = spec;
2127 memset (&compilers[n_compilers], 0, sizeof compilers[n_compilers]);
2131 link_command_spec = spec;
2134 if (link_command_spec == 0)
2135 fatal ("spec file has no spec for linking");
2138 /* Record the names of temporary files we tell compilers to write,
2139 and delete them at the end of the run. */
2141 /* This is the common prefix we use to make temp file names.
2142 It is chosen once for each run of this program.
2143 It is substituted into a spec by %g or %j.
2144 Thus, all temp file names contain this prefix.
2145 In practice, all temp file names start with this prefix.
2147 This prefix comes from the envvar TMPDIR if it is defined;
2148 otherwise, from the P_tmpdir macro if that is defined;
2149 otherwise, in /usr/tmp or /tmp;
2150 or finally the current directory if all else fails. */
2152 static const char *temp_filename;
2154 /* Length of the prefix. */
2156 static int temp_filename_length;
2158 /* Define the list of temporary files to delete. */
2163 struct temp_file *next;
2166 /* Queue of files to delete on success or failure of compilation. */
2167 static struct temp_file *always_delete_queue;
2168 /* Queue of files to delete on failure of compilation. */
2169 static struct temp_file *failure_delete_queue;
2171 /* Record FILENAME as a file to be deleted automatically.
2172 ALWAYS_DELETE nonzero means delete it if all compilation succeeds;
2173 otherwise delete it in any case.
2174 FAIL_DELETE nonzero means delete it if a compilation step fails;
2175 otherwise delete it in any case. */
2178 record_temp_file (const char *filename, int always_delete, int fail_delete)
2180 char *const name = xstrdup (filename);
2184 struct temp_file *temp;
2185 for (temp = always_delete_queue; temp; temp = temp->next)
2186 if (! strcmp (name, temp->name))
2189 temp = xmalloc (sizeof (struct temp_file));
2190 temp->next = always_delete_queue;
2192 always_delete_queue = temp;
2199 struct temp_file *temp;
2200 for (temp = failure_delete_queue; temp; temp = temp->next)
2201 if (! strcmp (name, temp->name))
2204 temp = xmalloc (sizeof (struct temp_file));
2205 temp->next = failure_delete_queue;
2207 failure_delete_queue = temp;
2213 /* Delete all the temporary files whose names we previously recorded. */
2216 delete_if_ordinary (const char *name)
2222 printf ("Delete %s? (y or n) ", name);
2226 while ((c = getchar ()) != '\n' && c != EOF)
2229 if (i == 'y' || i == 'Y')
2231 if (stat (name, &st) >= 0 && S_ISREG (st.st_mode))
2232 if (unlink (name) < 0)
2234 perror_with_name (name);
2238 delete_temp_files (void)
2240 struct temp_file *temp;
2242 for (temp = always_delete_queue; temp; temp = temp->next)
2243 delete_if_ordinary (temp->name);
2244 always_delete_queue = 0;
2247 /* Delete all the files to be deleted on error. */
2250 delete_failure_queue (void)
2252 struct temp_file *temp;
2254 for (temp = failure_delete_queue; temp; temp = temp->next)
2255 delete_if_ordinary (temp->name);
2259 clear_failure_queue (void)
2261 failure_delete_queue = 0;
2264 /* Build a list of search directories from PATHS.
2265 PREFIX is a string to prepend to the list.
2266 If CHECK_DIR_P is nonzero we ensure the directory exists.
2267 This is used mostly by putenv_from_prefixes so we use `collect_obstack'.
2268 It is also used by the --print-search-dirs flag. */
2271 build_search_list (struct path_prefix *paths, const char *prefix,
2274 int suffix_len = (machine_suffix) ? strlen (machine_suffix) : 0;
2276 = (just_machine_suffix) ? strlen (just_machine_suffix) : 0;
2277 int first_time = TRUE;
2278 struct prefix_list *pprefix;
2280 obstack_grow (&collect_obstack, prefix, strlen (prefix));
2281 obstack_1grow (&collect_obstack, '=');
2283 for (pprefix = paths->plist; pprefix != 0; pprefix = pprefix->next)
2285 int len = strlen (pprefix->prefix);
2289 || is_directory (pprefix->prefix, machine_suffix, 0)))
2292 obstack_1grow (&collect_obstack, PATH_SEPARATOR);
2295 obstack_grow (&collect_obstack, pprefix->prefix, len);
2296 obstack_grow (&collect_obstack, machine_suffix, suffix_len);
2299 if (just_machine_suffix
2300 && pprefix->require_machine_suffix == 2
2302 || is_directory (pprefix->prefix, just_machine_suffix, 0)))
2305 obstack_1grow (&collect_obstack, PATH_SEPARATOR);
2308 obstack_grow (&collect_obstack, pprefix->prefix, len);
2309 obstack_grow (&collect_obstack, just_machine_suffix,
2313 if (! pprefix->require_machine_suffix)
2316 obstack_1grow (&collect_obstack, PATH_SEPARATOR);
2319 obstack_grow (&collect_obstack, pprefix->prefix, len);
2323 obstack_1grow (&collect_obstack, '\0');
2324 return obstack_finish (&collect_obstack);
2327 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
2331 putenv_from_prefixes (struct path_prefix *paths, const char *env_var)
2333 putenv (build_search_list (paths, env_var, 1));
2336 /* Check whether NAME can be accessed in MODE. This is like access,
2337 except that it never considers directories to be executable. */
2340 access_check (const char *name, int mode)
2346 if (stat (name, &st) < 0
2347 || S_ISDIR (st.st_mode))
2351 return access (name, mode);
2354 /* Search for NAME using the prefix list PREFIXES. MODE is passed to
2355 access to check permissions.
2356 Return 0 if not found, otherwise return its name, allocated with malloc. */
2359 find_a_file (struct path_prefix *pprefix, const char *name, int mode,
2363 const char *const file_suffix =
2364 ((mode & X_OK) != 0 ? HOST_EXECUTABLE_SUFFIX : "");
2365 struct prefix_list *pl;
2366 int len = pprefix->max_len + strlen (name) + strlen (file_suffix) + 1;
2367 const char *multilib_name, *multilib_os_name;
2369 #ifdef DEFAULT_ASSEMBLER
2370 if (! strcmp (name, "as") && access (DEFAULT_ASSEMBLER, mode) == 0)
2371 return xstrdup (DEFAULT_ASSEMBLER);
2374 #ifdef DEFAULT_LINKER
2375 if (! strcmp(name, "ld") && access (DEFAULT_LINKER, mode) == 0)
2376 return xstrdup (DEFAULT_LINKER);
2380 len += strlen (machine_suffix);
2382 multilib_name = name;
2383 multilib_os_name = name;
2384 if (multilib && multilib_os_dir)
2386 int len1 = multilib_dir ? strlen (multilib_dir) + 1 : 0;
2387 int len2 = strlen (multilib_os_dir) + 1;
2389 len += len1 > len2 ? len1 : len2;
2391 multilib_name = ACONCAT ((multilib_dir, dir_separator_str, name,
2393 if (strcmp (multilib_os_dir, ".") != 0)
2394 multilib_os_name = ACONCAT ((multilib_os_dir, dir_separator_str, name,
2398 temp = xmalloc (len);
2400 /* Determine the filename to execute (special case for absolute paths). */
2402 if (IS_ABSOLUTE_PATH (name))
2404 if (access (name, mode) == 0)
2406 strcpy (temp, name);
2411 for (pl = pprefix->plist; pl; pl = pl->next)
2413 const char *this_name
2414 = pl->os_multilib ? multilib_os_name : multilib_name;
2418 /* Some systems have a suffix for executable files.
2419 So try appending that first. */
2420 if (file_suffix[0] != 0)
2422 strcpy (temp, pl->prefix);
2423 strcat (temp, machine_suffix);
2424 strcat (temp, multilib_name);
2425 strcat (temp, file_suffix);
2426 if (access_check (temp, mode) == 0)
2428 if (pl->used_flag_ptr != 0)
2429 *pl->used_flag_ptr = 1;
2434 /* Now try just the multilib_name. */
2435 strcpy (temp, pl->prefix);
2436 strcat (temp, machine_suffix);
2437 strcat (temp, multilib_name);
2438 if (access_check (temp, mode) == 0)
2440 if (pl->used_flag_ptr != 0)
2441 *pl->used_flag_ptr = 1;
2446 /* Certain prefixes are tried with just the machine type,
2447 not the version. This is used for finding as, ld, etc. */
2448 if (just_machine_suffix && pl->require_machine_suffix == 2)
2450 /* Some systems have a suffix for executable files.
2451 So try appending that first. */
2452 if (file_suffix[0] != 0)
2454 strcpy (temp, pl->prefix);
2455 strcat (temp, just_machine_suffix);
2456 strcat (temp, multilib_name);
2457 strcat (temp, file_suffix);
2458 if (access_check (temp, mode) == 0)
2460 if (pl->used_flag_ptr != 0)
2461 *pl->used_flag_ptr = 1;
2466 strcpy (temp, pl->prefix);
2467 strcat (temp, just_machine_suffix);
2468 strcat (temp, multilib_name);
2469 if (access_check (temp, mode) == 0)
2471 if (pl->used_flag_ptr != 0)
2472 *pl->used_flag_ptr = 1;
2477 /* Certain prefixes can't be used without the machine suffix
2478 when the machine or version is explicitly specified. */
2479 if (! pl->require_machine_suffix)
2481 /* Some systems have a suffix for executable files.
2482 So try appending that first. */
2483 if (file_suffix[0] != 0)
2485 strcpy (temp, pl->prefix);
2486 strcat (temp, this_name);
2487 strcat (temp, file_suffix);
2488 if (access_check (temp, mode) == 0)
2490 if (pl->used_flag_ptr != 0)
2491 *pl->used_flag_ptr = 1;
2496 strcpy (temp, pl->prefix);
2497 strcat (temp, this_name);
2498 if (access_check (temp, mode) == 0)
2500 if (pl->used_flag_ptr != 0)
2501 *pl->used_flag_ptr = 1;
2511 /* Ranking of prefixes in the sort list. -B prefixes are put before
2514 enum path_prefix_priority
2516 PREFIX_PRIORITY_B_OPT,
2517 PREFIX_PRIORITY_LAST
2520 /* Add an entry for PREFIX in PLIST. The PLIST is kept in ascending
2521 order according to PRIORITY. Within each PRIORITY, new entries are
2524 If WARN is nonzero, we will warn if no file is found
2525 through this prefix. WARN should point to an int
2526 which will be set to 1 if this entry is used.
2528 COMPONENT is the value to be passed to update_path.
2530 REQUIRE_MACHINE_SUFFIX is 1 if this prefix can't be used without
2531 the complete value of machine_suffix.
2532 2 means try both machine_suffix and just_machine_suffix. */
2535 add_prefix (struct path_prefix *pprefix, const char *prefix,
2536 const char *component, /* enum prefix_priority */ int priority,
2537 int require_machine_suffix, int *warn, int os_multilib)
2539 struct prefix_list *pl, **prev;
2542 for (prev = &pprefix->plist;
2543 (*prev) != NULL && (*prev)->priority <= priority;
2544 prev = &(*prev)->next)
2547 /* Keep track of the longest prefix. */
2549 prefix = update_path (prefix, component);
2550 len = strlen (prefix);
2551 if (len > pprefix->max_len)
2552 pprefix->max_len = len;
2554 pl = xmalloc (sizeof (struct prefix_list));
2555 pl->prefix = prefix;
2556 pl->require_machine_suffix = require_machine_suffix;
2557 pl->used_flag_ptr = warn;
2558 pl->priority = priority;
2559 pl->os_multilib = os_multilib;
2563 /* Insert after PREV. */
2568 /* Same as add_prefix, but prepending target_system_root to prefix. */
2570 add_sysrooted_prefix (struct path_prefix *pprefix, const char *prefix,
2571 const char *component,
2572 /* enum prefix_priority */ int priority,
2573 int require_machine_suffix, int *warn, int os_multilib)
2575 if (!IS_ABSOLUTE_PATH (prefix))
2578 if (target_system_root)
2580 if (target_sysroot_suffix)
2581 prefix = concat (target_sysroot_suffix, prefix, NULL);
2582 prefix = concat (target_system_root, prefix, NULL);
2584 /* We have to override this because GCC's notion of sysroot
2585 moves along with GCC. */
2589 add_prefix (pprefix, prefix, component, priority,
2590 require_machine_suffix, warn, os_multilib);
2593 /* Execute the command specified by the arguments on the current line of spec.
2594 When using pipes, this includes several piped-together commands
2595 with `|' between them.
2597 Return 0 if successful, -1 if failed. */
2603 int n_commands; /* # of command. */
2607 const char *prog; /* program name. */
2608 const char **argv; /* vector of args. */
2609 int pid; /* pid of process for this command. */
2612 struct command *commands; /* each command buffer with above info. */
2614 if (processing_spec_function)
2617 /* Count # of piped commands. */
2618 for (n_commands = 1, i = 0; i < argbuf_index; i++)
2619 if (strcmp (argbuf[i], "|") == 0)
2622 /* Get storage for each command. */
2623 commands = alloca (n_commands * sizeof (struct command));
2625 /* Split argbuf into its separate piped processes,
2626 and record info about each one.
2627 Also search for the programs that are to be run. */
2629 commands[0].prog = argbuf[0]; /* first command. */
2630 commands[0].argv = &argbuf[0];
2631 string = find_a_file (&exec_prefixes, commands[0].prog, X_OK, 0);
2634 commands[0].argv[0] = string;
2636 for (n_commands = 1, i = 0; i < argbuf_index; i++)
2637 if (strcmp (argbuf[i], "|") == 0)
2638 { /* each command. */
2639 #if defined (__MSDOS__) || defined (OS2) || defined (VMS)
2640 fatal ("-pipe not supported");
2642 argbuf[i] = 0; /* termination of command args. */
2643 commands[n_commands].prog = argbuf[i + 1];
2644 commands[n_commands].argv = &argbuf[i + 1];
2645 string = find_a_file (&exec_prefixes, commands[n_commands].prog,
2648 commands[n_commands].argv[0] = string;
2652 argbuf[argbuf_index] = 0;
2654 /* If -v, print what we are about to do, and maybe query. */
2658 /* For help listings, put a blank line between sub-processes. */
2659 if (print_help_list)
2660 fputc ('\n', stderr);
2662 /* Print each piped command as a separate line. */
2663 for (i = 0; i < n_commands; i++)
2665 const char *const *j;
2667 if (verbose_only_flag)
2669 for (j = commands[i].argv; *j; j++)
2672 fprintf (stderr, " \"");
2673 for (p = *j; *p; ++p)
2675 if (*p == '"' || *p == '\\' || *p == '$')
2676 fputc ('\\', stderr);
2679 fputc ('"', stderr);
2683 for (j = commands[i].argv; *j; j++)
2684 fprintf (stderr, " %s", *j);
2686 /* Print a pipe symbol after all but the last command. */
2687 if (i + 1 != n_commands)
2688 fprintf (stderr, " |");
2689 fprintf (stderr, "\n");
2692 if (verbose_only_flag != 0)
2694 /* verbose_only_flag should act as if the spec was
2695 executed, so increment execution_count before
2696 returning. This prevents spurious warnings about
2697 unused linker input files, etc. */
2702 notice ("\nGo ahead? (y or n) ");
2706 while (getchar () != '\n')
2709 if (i != 'y' && i != 'Y')
2714 #ifdef ENABLE_VALGRIND_CHECKING
2715 /* Run the each command through valgrind. To simplify prepending the
2716 path to valgrind and the option "-q" (for quiet operation unless
2717 something triggers), we allocate a separate argv array. */
2719 for (i = 0; i < n_commands; i++)
2725 for (argc = 0; commands[i].argv[argc] != NULL; argc++)
2728 argv = alloca ((argc + 3) * sizeof (char *));
2730 argv[0] = VALGRIND_PATH;
2732 for (j = 2; j < argc + 2; j++)
2733 argv[j] = commands[i].argv[j - 2];
2736 commands[i].argv = argv;
2737 commands[i].prog = argv[0];
2741 /* Run each piped subprocess. */
2743 for (i = 0; i < n_commands; i++)
2745 char *errmsg_fmt, *errmsg_arg;
2746 const char *string = commands[i].argv[0];
2748 /* For some bizarre reason, the second argument of execvp() is
2749 char *const *, not const char *const *. */
2750 commands[i].pid = pexecute (string, (char *const *) commands[i].argv,
2751 programname, temp_filename,
2752 &errmsg_fmt, &errmsg_arg,
2753 ((i == 0 ? PEXECUTE_FIRST : 0)
2754 | (i + 1 == n_commands ? PEXECUTE_LAST : 0)
2755 | (string == commands[i].prog
2756 ? PEXECUTE_SEARCH : 0)
2757 | (verbose_flag ? PEXECUTE_VERBOSE : 0)));
2759 if (commands[i].pid == -1)
2760 pfatal_pexecute (errmsg_fmt, errmsg_arg);
2762 if (string != commands[i].prog)
2763 free ((void *) string);
2768 /* Wait for all the subprocesses to finish.
2769 We don't care what order they finish in;
2770 we know that N_COMMANDS waits will get them all.
2771 Ignore subprocesses that we don't know about,
2772 since they can be spawned by the process that exec'ed us. */
2776 #ifdef HAVE_GETRUSAGE
2778 double ut = 0.0, st = 0.0;
2781 for (i = 0; i < n_commands;)
2787 pid = pwait (commands[i].pid, &status, 0);
2791 #ifdef HAVE_GETRUSAGE
2794 /* getrusage returns the total resource usage of all children
2795 up to now. Copy the previous values into prus, get the
2796 current statistics, then take the difference. */
2799 getrusage (RUSAGE_CHILDREN, &rus);
2800 d.tv_sec = rus.ru_utime.tv_sec - prus.ru_utime.tv_sec;
2801 d.tv_usec = rus.ru_utime.tv_usec - prus.ru_utime.tv_usec;
2802 ut = (double) d.tv_sec + (double) d.tv_usec / 1.0e6;
2804 d.tv_sec = rus.ru_stime.tv_sec - prus.ru_stime.tv_sec;
2805 d.tv_usec = rus.ru_stime.tv_usec - prus.ru_stime.tv_usec;
2806 st = (double) d.tv_sec + (double) d.tv_usec / 1.0e6;
2810 for (j = 0; j < n_commands; j++)
2811 if (commands[j].pid == pid)
2814 if (WIFSIGNALED (status))
2817 /* SIGPIPE is a special case. It happens in -pipe mode
2818 when the compiler dies before the preprocessor is
2819 done, or the assembler dies before the compiler is
2820 done. There's generally been an error already, and
2821 this is just fallout. So don't generate another error
2822 unless we would otherwise have succeeded. */
2823 if (WTERMSIG (status) == SIGPIPE
2824 && (signal_count || greatest_status >= MIN_FATAL_STATUS))
2829 Internal error: %s (program %s)\n\
2830 Please submit a full bug report.\n\
2831 See %s for instructions.",
2832 strsignal (WTERMSIG (status)), commands[j].prog,
2837 else if (WIFEXITED (status)
2838 && WEXITSTATUS (status) >= MIN_FATAL_STATUS)
2840 if (WEXITSTATUS (status) > greatest_status)
2841 greatest_status = WEXITSTATUS (status);
2844 #ifdef HAVE_GETRUSAGE
2845 if (report_times && ut + st != 0)
2846 notice ("# %s %.2f %.2f\n", commands[j].prog, ut, st);
2855 /* Find all the switches given to us
2856 and make a vector describing them.
2857 The elements of the vector are strings, one per switch given.
2858 If a switch uses following arguments, then the `part1' field
2859 is the switch itself and the `args' field
2860 is a null-terminated vector containing the following arguments.
2861 The `live_cond' field is:
2863 1 if the switch is true in a conditional spec,
2864 -1 if false (overridden by a later switch)
2865 -2 if this switch should be ignored (used in %<S)
2866 The `validated' field is nonzero if any spec has looked at this switch;
2867 if it remains zero at the end of the run, it must be meaningless. */
2870 #define SWITCH_FALSE -1
2871 #define SWITCH_IGNORE -2
2872 #define SWITCH_LIVE 1
2879 unsigned char validated;
2880 unsigned char ordering;
2883 static struct switchstr *switches;
2885 static int n_switches;
2890 const char *language;
2893 /* Also a vector of input files specified. */
2895 static struct infile *infiles;
2899 /* True if multiple input files are being compiled to a single
2902 static bool combine_inputs;
2904 /* This counts the number of libraries added by lang_specific_driver, so that
2905 we can tell if there were any user supplied any files or libraries. */
2907 static int added_libraries;
2909 /* And a vector of corresponding output files is made up later. */
2911 const char **outfiles;
2913 /* Used to track if none of the -B paths are used. */
2916 /* Gives value to pass as "warn" to add_prefix for standard prefixes. */
2917 static int *warn_std_ptr = 0;
2919 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2921 /* Convert NAME to a new name if it is the standard suffix. DO_EXE
2922 is true if we should look for an executable suffix. DO_OBJ
2923 is true if we should look for an object suffix. */
2926 convert_filename (const char *name, int do_exe ATTRIBUTE_UNUSED,
2927 int do_obj ATTRIBUTE_UNUSED)
2929 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2937 len = strlen (name);
2939 #ifdef HAVE_TARGET_OBJECT_SUFFIX
2940 /* Convert x.o to x.obj if TARGET_OBJECT_SUFFIX is ".obj". */
2941 if (do_obj && len > 2
2942 && name[len - 2] == '.'
2943 && name[len - 1] == 'o')
2945 obstack_grow (&obstack, name, len - 2);
2946 obstack_grow0 (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX));
2947 name = obstack_finish (&obstack);
2951 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2952 /* If there is no filetype, make it the executable suffix (which includes
2953 the "."). But don't get confused if we have just "-o". */
2954 if (! do_exe || TARGET_EXECUTABLE_SUFFIX[0] == 0 || (len == 2 && name[0] == '-'))
2957 for (i = len - 1; i >= 0; i--)
2958 if (IS_DIR_SEPARATOR (name[i]))
2961 for (i++; i < len; i++)
2965 obstack_grow (&obstack, name, len);
2966 obstack_grow0 (&obstack, TARGET_EXECUTABLE_SUFFIX,
2967 strlen (TARGET_EXECUTABLE_SUFFIX));
2968 name = obstack_finish (&obstack);
2975 /* Display the command line switches accepted by gcc. */
2979 printf (_("Usage: %s [options] file...\n"), programname);
2980 fputs (_("Options:\n"), stdout);
2982 fputs (_(" -pass-exit-codes Exit with highest error code from a phase\n"), stdout);
2983 fputs (_(" --help Display this information\n"), stdout);
2984 fputs (_(" --target-help Display target specific command line options\n"), stdout);
2986 fputs (_(" (Use '-v --help' to display command line options of sub-processes)\n"), stdout);
2987 fputs (_(" -dumpspecs Display all of the built in spec strings\n"), stdout);
2988 fputs (_(" -dumpversion Display the version of the compiler\n"), stdout);
2989 fputs (_(" -dumpmachine Display the compiler's target processor\n"), stdout);
2990 fputs (_(" -print-search-dirs Display the directories in the compiler's search path\n"), stdout);
2991 fputs (_(" -print-libgcc-file-name Display the name of the compiler's companion library\n"), stdout);
2992 fputs (_(" -print-file-name=<lib> Display the full path to library <lib>\n"), stdout);
2993 fputs (_(" -print-prog-name=<prog> Display the full path to compiler component <prog>\n"), stdout);
2994 fputs (_(" -print-multi-directory Display the root directory for versions of libgcc\n"), stdout);
2996 -print-multi-lib Display the mapping between command line options and\n\
2997 multiple library search directories\n"), stdout);
2998 fputs (_(" -print-multi-os-directory Display the relative path to OS libraries\n"), stdout);
2999 fputs (_(" -Wa,<options> Pass comma-separated <options> on to the assembler\n"), stdout);
3000 fputs (_(" -Wp,<options> Pass comma-separated <options> on to the preprocessor\n"), stdout);
3001 fputs (_(" -Wl,<options> Pass comma-separated <options> on to the linker\n"), stdout);
3002 fputs (_(" -Xassembler <arg> Pass <arg> on to the assembler\n"), stdout);
3003 fputs (_(" -Xpreprocessor <arg> Pass <arg> on to the preprocessor\n"), stdout);
3004 fputs (_(" -Xlinker <arg> Pass <arg> on to the linker\n"), stdout);
3005 fputs (_(" -save-temps Do not delete intermediate files\n"), stdout);
3006 fputs (_(" -pipe Use pipes rather than intermediate files\n"), stdout);
3007 fputs (_(" -time Time the execution of each subprocess\n"), stdout);
3008 fputs (_(" -specs=<file> Override built-in specs with the contents of <file>\n"), stdout);
3009 fputs (_(" -std=<standard> Assume that the input sources are for <standard>\n"), stdout);
3010 fputs (_(" -B <directory> Add <directory> to the compiler's search paths\n"), stdout);
3011 fputs (_(" -b <machine> Run gcc for target <machine>, if installed\n"), stdout);
3012 fputs (_(" -V <version> Run gcc version number <version>, if installed\n"), stdout);
3013 fputs (_(" -v Display the programs invoked by the compiler\n"), stdout);
3014 fputs (_(" -### Like -v but options quoted and commands not executed\n"), stdout);
3015 fputs (_(" -E Preprocess only; do not compile, assemble or link\n"), stdout);
3016 fputs (_(" -S Compile only; do not assemble or link\n"), stdout);
3017 fputs (_(" -c Compile and assemble, but do not link\n"), stdout);
3018 fputs (_(" -o <file> Place the output into <file>\n"), stdout);
3020 -x <language> Specify the language of the following input files\n\
3021 Permissible languages include: c c++ assembler none\n\
3022 'none' means revert to the default behavior of\n\
3023 guessing the language based on the file's extension\n\
3027 \nOptions starting with -g, -f, -m, -O, -W, or --param are automatically\n\
3028 passed on to the various sub-processes invoked by %s. In order to pass\n\
3029 other options on to these processes the -W<letter> options must be used.\n\
3032 /* The rest of the options are displayed by invocations of the various
3037 add_preprocessor_option (const char *option, int len)
3039 n_preprocessor_options++;
3041 if (! preprocessor_options)
3042 preprocessor_options = xmalloc (n_preprocessor_options * sizeof (char *));
3044 preprocessor_options = xrealloc (preprocessor_options,
3045 n_preprocessor_options * sizeof (char *));
3047 preprocessor_options [n_preprocessor_options - 1] =
3048 save_string (option, len);
3052 add_assembler_option (const char *option, int len)
3054 n_assembler_options++;
3056 if (! assembler_options)
3057 assembler_options = xmalloc (n_assembler_options * sizeof (char *));
3059 assembler_options = xrealloc (assembler_options,
3060 n_assembler_options * sizeof (char *));
3062 assembler_options [n_assembler_options - 1] = save_string (option, len);
3066 add_linker_option (const char *option, int len)
3070 if (! linker_options)
3071 linker_options = xmalloc (n_linker_options * sizeof (char *));
3073 linker_options = xrealloc (linker_options,
3074 n_linker_options * sizeof (char *));
3076 linker_options [n_linker_options - 1] = save_string (option, len);
3079 /* Create the vector `switches' and its contents.
3080 Store its length in `n_switches'. */
3083 process_command (int argc, const char *const *argv)
3088 const char *spec_lang = 0;
3089 int last_language_n_infiles;
3092 int lang_n_infiles = 0;
3093 #ifdef MODIFY_TARGET_NAME
3094 int is_modify_target_name;
3098 GET_ENVIRONMENT (gcc_exec_prefix, "GCC_EXEC_PREFIX");
3102 added_libraries = 0;
3104 /* Figure compiler version from version string. */
3106 compiler_version = temp1 = xstrdup (version_string);
3108 for (; *temp1; ++temp1)
3117 /* If there is a -V or -b option (or both), process it now, before
3118 trying to interpret the rest of the command line. */
3119 if (argc > 1 && argv[1][0] == '-'
3120 && (argv[1][1] == 'V' || argv[1][1] == 'b'))
3122 const char *new_version = DEFAULT_TARGET_VERSION;
3123 const char *new_machine = DEFAULT_TARGET_MACHINE;
3124 const char *progname = argv[0];
3129 while (argc > 1 && argv[1][0] == '-'
3130 && (argv[1][1] == 'V' || argv[1][1] == 'b'))
3132 char opt = argv[1][1];
3134 if (argv[1][2] != '\0')
3147 fatal ("`-%c' option must have argument", opt);
3154 for (baselen = strlen (progname); baselen > 0; baselen--)
3155 if (IS_DIR_SEPARATOR (progname[baselen-1]))
3157 new_argv0 = xmemdup (progname, baselen,
3158 baselen + concat_length (new_version, new_machine,
3159 "-gcc-", NULL) + 1);
3160 strcpy (new_argv0 + baselen, new_machine);
3161 strcat (new_argv0, "-gcc-");
3162 strcat (new_argv0, new_version);
3164 new_argv = xmemdup (argv, (argc + 1) * sizeof (argv[0]),
3165 (argc + 1) * sizeof (argv[0]));
3166 new_argv[0] = new_argv0;
3168 execvp (new_argv0, new_argv);
3169 fatal ("couldn't run `%s': %s", new_argv0, xstrerror (errno));
3172 /* Set up the default search paths. If there is no GCC_EXEC_PREFIX,
3173 see if we can create it from the pathname specified in argv[0]. */
3175 gcc_libexec_prefix = standard_libexec_prefix;
3177 /* FIXME: make_relative_prefix doesn't yet work for VMS. */
3178 if (!gcc_exec_prefix)
3180 gcc_exec_prefix = make_relative_prefix (argv[0], standard_bindir_prefix,
3181 standard_exec_prefix);
3182 gcc_libexec_prefix = make_relative_prefix (argv[0],
3183 standard_bindir_prefix,
3184 standard_libexec_prefix);
3185 if (gcc_exec_prefix)
3186 putenv (concat ("GCC_EXEC_PREFIX=", gcc_exec_prefix, NULL));
3189 gcc_libexec_prefix = make_relative_prefix (gcc_exec_prefix,
3190 standard_exec_prefix,
3191 standard_libexec_prefix);
3195 if (gcc_exec_prefix)
3197 int len = strlen (gcc_exec_prefix);
3199 if (len > (int) sizeof ("/lib/gcc/") - 1
3200 && (IS_DIR_SEPARATOR (gcc_exec_prefix[len-1])))
3202 temp = gcc_exec_prefix + len - sizeof ("/lib/gcc/") + 1;
3203 if (IS_DIR_SEPARATOR (*temp)
3204 && strncmp (temp + 1, "lib", 3) == 0
3205 && IS_DIR_SEPARATOR (temp[4])
3206 && strncmp (temp + 5, "gcc", 3) == 0)
3207 len -= sizeof ("/lib/gcc/") - 1;
3210 set_std_prefix (gcc_exec_prefix, len);
3211 add_prefix (&exec_prefixes, gcc_libexec_prefix, "GCC",
3212 PREFIX_PRIORITY_LAST, 0, NULL, 0);
3213 add_prefix (&startfile_prefixes, gcc_exec_prefix, "GCC",
3214 PREFIX_PRIORITY_LAST, 0, NULL, 0);
3217 /* COMPILER_PATH and LIBRARY_PATH have values
3218 that are lists of directory names with colons. */
3220 GET_ENVIRONMENT (temp, "COMPILER_PATH");
3223 const char *startp, *endp;
3224 char *nstore = alloca (strlen (temp) + 3);
3226 startp = endp = temp;
3229 if (*endp == PATH_SEPARATOR || *endp == 0)
3231 strncpy (nstore, startp, endp - startp);
3233 strcpy (nstore, concat (".", dir_separator_str, NULL));
3234 else if (!IS_DIR_SEPARATOR (endp[-1]))
3236 nstore[endp - startp] = DIR_SEPARATOR;
3237 nstore[endp - startp + 1] = 0;
3240 nstore[endp - startp] = 0;
3241 add_prefix (&exec_prefixes, nstore, 0,
3242 PREFIX_PRIORITY_LAST, 0, NULL, 0);
3243 add_prefix (&include_prefixes,
3244 concat (nstore, "include", NULL),
3245 0, PREFIX_PRIORITY_LAST, 0, NULL, 0);
3248 endp = startp = endp + 1;
3255 GET_ENVIRONMENT (temp, LIBRARY_PATH_ENV);
3256 if (temp && *cross_compile == '0')
3258 const char *startp, *endp;
3259 char *nstore = alloca (strlen (temp) + 3);
3261 startp = endp = temp;
3264 if (*endp == PATH_SEPARATOR || *endp == 0)
3266 strncpy (nstore, startp, endp - startp);
3268 strcpy (nstore, concat (".", dir_separator_str, NULL));
3269 else if (!IS_DIR_SEPARATOR (endp[-1]))
3271 nstore[endp - startp] = DIR_SEPARATOR;
3272 nstore[endp - startp + 1] = 0;
3275 nstore[endp - startp] = 0;
3276 add_prefix (&startfile_prefixes, nstore, NULL,
3277 PREFIX_PRIORITY_LAST, 0, NULL, 1);
3280 endp = startp = endp + 1;
3287 /* Use LPATH like LIBRARY_PATH (for the CMU build program). */
3288 GET_ENVIRONMENT (temp, "LPATH");
3289 if (temp && *cross_compile == '0')
3291 const char *startp, *endp;
3292 char *nstore = alloca (strlen (temp) + 3);
3294 startp = endp = temp;
3297 if (*endp == PATH_SEPARATOR || *endp == 0)
3299 strncpy (nstore, startp, endp - startp);
3301 strcpy (nstore, concat (".", dir_separator_str, NULL));
3302 else if (!IS_DIR_SEPARATOR (endp[-1]))
3304 nstore[endp - startp] = DIR_SEPARATOR;
3305 nstore[endp - startp + 1] = 0;
3308 nstore[endp - startp] = 0;
3309 add_prefix (&startfile_prefixes, nstore, NULL,
3310 PREFIX_PRIORITY_LAST, 0, NULL, 1);
3313 endp = startp = endp + 1;
3320 /* Convert new-style -- options to old-style. */
3321 translate_options (&argc, &argv);
3323 /* Do language-specific adjustment/addition of flags. */
3324 lang_specific_driver (&argc, &argv, &added_libraries);
3326 /* Scan argv twice. Here, the first time, just count how many switches
3327 there will be in their vector, and how many input files in theirs.
3328 Here we also parse the switches that cc itself uses (e.g. -v). */
3330 for (i = 1; i < argc; i++)
3332 if (! strcmp (argv[i], "-dumpspecs"))
3334 struct spec_list *sl;
3336 for (sl = specs; sl; sl = sl->next)
3337 printf ("*%s:\n%s\n\n", sl->name, *(sl->ptr_spec));
3338 if (link_command_spec)
3339 printf ("*link_command:\n%s\n\n", link_command_spec);
3342 else if (! strcmp (argv[i], "-dumpversion"))
3344 printf ("%s\n", spec_version);
3347 else if (! strcmp (argv[i], "-dumpmachine"))
3349 printf ("%s\n", spec_machine);
3352 else if (strcmp (argv[i], "-fversion") == 0)
3354 /* translate_options () has turned --version into -fversion. */
3355 printf (_("%s (GCC) %s\n"), programname, version_string);
3356 fputs (_("Copyright (C) 2003 Free Software Foundation, Inc.\n"),
3358 fputs (_("This is free software; see the source for copying conditions. There is NO\n\
3359 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\n"),
3363 else if (strcmp (argv[i], "-fhelp") == 0)
3365 /* translate_options () has turned --help into -fhelp. */
3366 print_help_list = 1;
3368 /* We will be passing a dummy file on to the sub-processes. */
3372 /* CPP driver cannot obtain switch from cc1_options. */
3374 add_preprocessor_option ("--help", 6);
3375 add_assembler_option ("--help", 6);
3376 add_linker_option ("--help", 6);
3378 else if (strcmp (argv[i], "-ftarget-help") == 0)
3380 /* translate_options() has turned --target-help into -ftarget-help. */
3381 target_help_flag = 1;
3383 /* We will be passing a dummy file on to the sub-processes. */
3387 /* CPP driver cannot obtain switch from cc1_options. */
3389 add_preprocessor_option ("--target-help", 13);
3390 add_assembler_option ("--target-help", 13);
3391 add_linker_option ("--target-help", 13);
3393 else if (! strcmp (argv[i], "-pass-exit-codes"))
3395 pass_exit_codes = 1;
3398 else if (! strcmp (argv[i], "-print-search-dirs"))
3399 print_search_dirs = 1;
3400 else if (! strcmp (argv[i], "-print-libgcc-file-name"))
3401 print_file_name = "libgcc.a";
3402 else if (! strncmp (argv[i], "-print-file-name=", 17))
3403 print_file_name = argv[i] + 17;
3404 else if (! strncmp (argv[i], "-print-prog-name=", 17))
3405 print_prog_name = argv[i] + 17;
3406 else if (! strcmp (argv[i], "-print-multi-lib"))
3407 print_multi_lib = 1;
3408 else if (! strcmp (argv[i], "-print-multi-directory"))
3409 print_multi_directory = 1;
3410 else if (! strcmp (argv[i], "-print-multi-os-directory"))
3411 print_multi_os_directory = 1;
3412 else if (! strncmp (argv[i], "-Wa,", 4))
3415 /* Pass the rest of this option to the assembler. */
3417 /* Split the argument at commas. */
3419 for (j = 4; argv[i][j]; j++)
3420 if (argv[i][j] == ',')
3422 add_assembler_option (argv[i] + prev, j - prev);
3426 /* Record the part after the last comma. */
3427 add_assembler_option (argv[i] + prev, j - prev);
3429 else if (! strncmp (argv[i], "-Wp,", 4))
3432 /* Pass the rest of this option to the preprocessor. */
3434 /* Split the argument at commas. */
3436 for (j = 4; argv[i][j]; j++)
3437 if (argv[i][j] == ',')
3439 add_preprocessor_option (argv[i] + prev, j - prev);
3443 /* Record the part after the last comma. */
3444 add_preprocessor_option (argv[i] + prev, j - prev);
3446 else if (argv[i][0] == '+' && argv[i][1] == 'e')
3447 /* The +e options to the C++ front-end. */
3449 else if (strncmp (argv[i], "-Wl,", 4) == 0)
3452 /* Split the argument at commas. */
3453 for (j = 3; argv[i][j]; j++)
3454 n_infiles += (argv[i][j] == ',');
3456 else if (strcmp (argv[i], "-Xlinker") == 0)
3459 fatal ("argument to `-Xlinker' is missing");
3464 else if (strcmp (argv[i], "-Xpreprocessor") == 0)
3467 fatal ("argument to `-Xpreprocessor' is missing");
3469 add_preprocessor_option (argv[i+1], strlen (argv[i+1]));
3471 else if (strcmp (argv[i], "-Xassembler") == 0)
3474 fatal ("argument to `-Xassembler' is missing");
3476 add_assembler_option (argv[i+1], strlen (argv[i+1]));
3478 else if (strcmp (argv[i], "-l") == 0)
3481 fatal ("argument to `-l' is missing");
3486 else if (strncmp (argv[i], "-l", 2) == 0)
3488 else if (strcmp (argv[i], "-save-temps") == 0)
3490 save_temps_flag = 1;
3493 else if (strcmp (argv[i], "-specs") == 0)
3495 struct user_specs *user = xmalloc (sizeof (struct user_specs));
3497 fatal ("argument to `-specs' is missing");
3499 user->next = (struct user_specs *) 0;
3500 user->filename = argv[i];
3501 if (user_specs_tail)
3502 user_specs_tail->next = user;
3504 user_specs_head = user;
3505 user_specs_tail = user;
3507 else if (strncmp (argv[i], "-specs=", 7) == 0)
3509 struct user_specs *user = xmalloc (sizeof (struct user_specs));
3510 if (strlen (argv[i]) == 7)
3511 fatal ("argument to `-specs=' is missing");
3513 user->next = (struct user_specs *) 0;
3514 user->filename = argv[i] + 7;
3515 if (user_specs_tail)
3516 user_specs_tail->next = user;
3518 user_specs_head = user;
3519 user_specs_tail = user;
3521 else if (strcmp (argv[i], "-time") == 0)
3523 else if (strcmp (argv[i], "-pipe") == 0)
3525 /* -pipe has to go into the switches array as well as
3530 else if (strcmp (argv[i], "-###") == 0)
3532 /* This is similar to -v except that there is no execution
3533 of the commands and the echoed arguments are quoted. It
3534 is intended for use in shell scripts to capture the
3535 driver-generated command line. */
3536 verbose_only_flag++;
3539 else if (argv[i][0] == '-' && argv[i][1] != 0)
3541 const char *p = &argv[i][1];
3548 fatal ("`-%c' must come at the start of the command line", c);
3556 if (p[1] == 0 && i + 1 == argc)
3557 fatal ("argument to `-B' is missing");
3563 len = strlen (value);
3565 /* Catch the case where the user has forgotten to append a
3566 directory separator to the path. Note, they may be using
3567 -B to add an executable name prefix, eg "i386-elf-", in
3568 order to distinguish between multiple installations of
3569 GCC in the same directory. Hence we must check to see
3570 if appending a directory separator actually makes a
3571 valid directory name. */
3572 if (! IS_DIR_SEPARATOR (value [len - 1])
3573 && is_directory (value, "", 0))
3575 char *tmp = xmalloc (len + 2);
3576 strcpy (tmp, value);
3577 tmp[len] = DIR_SEPARATOR;
3582 /* As a kludge, if the arg is "[foo/]stageN/", just
3583 add "[foo/]include" to the include prefix. */
3586 && (IS_DIR_SEPARATOR (value[len - 8]))))
3587 && strncmp (value + len - 7, "stage", 5) == 0
3588 && ISDIGIT (value[len - 2])
3589 && (IS_DIR_SEPARATOR (value[len - 1])))
3592 add_prefix (&include_prefixes, "include", NULL,
3593 PREFIX_PRIORITY_B_OPT, 0, NULL, 0);
3596 char * string = xmalloc (len + 1);
3598 strncpy (string, value, len - 7);
3599 strcpy (string + len - 7, "include");
3600 add_prefix (&include_prefixes, string, NULL,
3601 PREFIX_PRIORITY_B_OPT, 0, NULL, 0);
3605 add_prefix (&exec_prefixes, value, NULL,
3606 PREFIX_PRIORITY_B_OPT, 0, &warn_B, 0);
3607 add_prefix (&startfile_prefixes, value, NULL,
3608 PREFIX_PRIORITY_B_OPT, 0, &warn_B, 0);
3609 add_prefix (&include_prefixes, concat (value, "include", NULL),
3610 NULL, PREFIX_PRIORITY_B_OPT, 0, NULL, 0);
3615 case 'v': /* Print our subcommands and print versions. */
3617 /* If they do anything other than exactly `-v', don't set
3618 verbose_flag; rather, continue on to give the error. */
3636 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3641 /* Forward scan, just in case -S or -c is specified
3648 if (argv[j][0] == '-')
3650 if (SWITCH_CURTAILS_COMPILATION (argv[j][1])
3656 else if ((skip = SWITCH_TAKES_ARG (argv[j][1])))
3657 j += skip - (argv[j][2] != 0);
3658 else if ((skip = WORD_SWITCH_TAKES_ARG (argv[j] + 1)))
3665 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX) || defined(HAVE_TARGET_OBJECT_SUFFIX)
3667 argv[i + 1] = convert_filename (argv[i + 1], ! have_c, 0);
3669 argv[i] = convert_filename (argv[i], ! have_c, 0);
3676 #ifdef MODIFY_TARGET_NAME
3677 is_modify_target_name = 0;
3679 for (j = 0; j < ARRAY_SIZE (modify_target); j++)
3680 if (! strcmp (argv[i], modify_target[j].sw))
3682 char *new_name = xmalloc (strlen (modify_target[j].str)
3683 + strlen (spec_machine));
3686 int made_addition = 0;
3688 is_modify_target_name = 1;
3689 for (p = spec_machine, q = new_name; *p != 0; )
3691 if (modify_target[j].add_del == DELETE
3692 && (! strncmp (q, modify_target[j].str,
3693 strlen (modify_target[j].str))))
3694 p += strlen (modify_target[j].str);
3695 else if (modify_target[j].add_del == ADD
3696 && ! made_addition && *p == '-')
3698 for (r = modify_target[j].str; *r != 0; )
3706 spec_machine = new_name;
3709 if (is_modify_target_name)
3715 if (SWITCH_TAKES_ARG (c) > (p[1] != 0))
3716 i += SWITCH_TAKES_ARG (c) - (p[1] != 0);
3717 else if (WORD_SWITCH_TAKES_ARG (p))
3718 i += WORD_SWITCH_TAKES_ARG (p);
3728 combine_inputs = (have_c && have_o && lang_n_infiles > 1);
3730 if ((save_temps_flag || report_times) && use_pipes)
3732 /* -save-temps overrides -pipe, so that temp files are produced */
3733 if (save_temps_flag)
3734 error ("warning: -pipe ignored because -save-temps specified");
3735 /* -time overrides -pipe because we can't get correct stats when
3736 multiple children are running at once. */
3737 else if (report_times)
3738 error ("warning: -pipe ignored because -time specified");
3743 /* Set up the search paths before we go looking for config files. */
3745 /* These come before the md prefixes so that we will find gcc's subcommands
3746 (such as cpp) rather than those of the host system. */
3747 /* Use 2 as fourth arg meaning try just the machine as a suffix,
3748 as well as trying the machine and the version. */
3750 add_prefix (&exec_prefixes, standard_libexec_prefix, "GCC",
3751 PREFIX_PRIORITY_LAST, 1, warn_std_ptr, 0);
3752 add_prefix (&exec_prefixes, standard_libexec_prefix, "BINUTILS",
3753 PREFIX_PRIORITY_LAST, 2, warn_std_ptr, 0);
3754 add_prefix (&exec_prefixes, standard_exec_prefix, "BINUTILS",
3755 PREFIX_PRIORITY_LAST, 2, warn_std_ptr, 0);
3756 add_prefix (&exec_prefixes, standard_exec_prefix_1, "BINUTILS",
3757 PREFIX_PRIORITY_LAST, 2, warn_std_ptr, 0);
3758 add_prefix (&exec_prefixes, standard_exec_prefix_2, "BINUTILS",
3759 PREFIX_PRIORITY_LAST, 2, warn_std_ptr, 0);
3762 add_prefix (&startfile_prefixes, standard_exec_prefix, "BINUTILS",
3763 PREFIX_PRIORITY_LAST, 1, warn_std_ptr, 0);
3764 add_prefix (&startfile_prefixes, standard_exec_prefix_2, "BINUTILS",
3765 PREFIX_PRIORITY_LAST, 1, warn_std_ptr, 0);
3767 tooldir_prefix = concat (tooldir_base_prefix, spec_machine,
3768 dir_separator_str, NULL);
3770 /* If tooldir is relative, base it on exec_prefixes. A relative
3771 tooldir lets us move the installed tree as a unit.
3773 If GCC_EXEC_PREFIX is defined, then we want to add two relative
3774 directories, so that we can search both the user specified directory
3775 and the standard place. */
3777 if (!IS_ABSOLUTE_PATH (tooldir_prefix))
3779 if (gcc_exec_prefix)
3781 char *gcc_exec_tooldir_prefix
3782 = concat (gcc_exec_prefix, spec_machine, dir_separator_str,
3783 spec_version, dir_separator_str, tooldir_prefix, NULL);
3785 add_prefix (&exec_prefixes,
3786 concat (gcc_exec_tooldir_prefix, "bin",
3787 dir_separator_str, NULL),
3788 NULL, PREFIX_PRIORITY_LAST, 0, NULL, 0);
3789 add_prefix (&startfile_prefixes,
3790 concat (gcc_exec_tooldir_prefix, "lib",
3791 dir_separator_str, NULL),
3792 NULL, PREFIX_PRIORITY_LAST, 0, NULL, 1);
3795 tooldir_prefix = concat (standard_exec_prefix, spec_machine,
3796 dir_separator_str, spec_version,
3797 dir_separator_str, tooldir_prefix, NULL);
3800 add_prefix (&exec_prefixes,
3801 concat (tooldir_prefix, "bin", dir_separator_str, NULL),
3802 "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL, 0);
3803 add_prefix (&startfile_prefixes,
3804 concat (tooldir_prefix, "lib", dir_separator_str, NULL),
3805 "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL, 1);
3807 #if defined(TARGET_SYSTEM_ROOT_RELOCATABLE) && !defined(VMS)
3808 /* If the normal TARGET_SYSTEM_ROOT is inside of $exec_prefix,
3809 then consider it to relocate with the rest of the GCC installation
3810 if GCC_EXEC_PREFIX is set.
3811 ``make_relative_prefix'' is not compiled for VMS, so don't call it. */
3812 if (target_system_root && gcc_exec_prefix)
3814 char *tmp_prefix = make_relative_prefix (argv[0],
3815 standard_bindir_prefix,
3816 target_system_root);
3817 if (tmp_prefix && access_check (tmp_prefix, F_OK) == 0)
3819 target_system_root = tmp_prefix;
3820 target_system_root_changed = 1;
3825 /* More prefixes are enabled in main, after we read the specs file
3826 and determine whether this is cross-compilation or not. */
3828 /* Then create the space for the vectors and scan again. */
3830 switches = xmalloc ((n_switches + 1) * sizeof (struct switchstr));
3831 infiles = xmalloc ((n_infiles + 1) * sizeof (struct infile));
3834 last_language_n_infiles = -1;
3836 /* This, time, copy the text of each switch and store a pointer
3837 to the copy in the vector of switches.
3838 Store all the infiles in their vector. */
3840 for (i = 1; i < argc; i++)
3842 /* Just skip the switches that were handled by the preceding loop. */
3843 #ifdef MODIFY_TARGET_NAME
3844 is_modify_target_name = 0;
3846 for (j = 0; j < ARRAY_SIZE (modify_target); j++)
3847 if (! strcmp (argv[i], modify_target[j].sw))
3848 is_modify_target_name = 1;
3850 if (is_modify_target_name)
3854 if (! strncmp (argv[i], "-Wa,", 4))
3856 else if (! strncmp (argv[i], "-Wp,", 4))
3858 else if (! strcmp (argv[i], "-pass-exit-codes"))
3860 else if (! strcmp (argv[i], "-print-search-dirs"))
3862 else if (! strcmp (argv[i], "-print-libgcc-file-name"))
3864 else if (! strncmp (argv[i], "-print-file-name=", 17))
3866 else if (! strncmp (argv[i], "-print-prog-name=", 17))
3868 else if (! strcmp (argv[i], "-print-multi-lib"))
3870 else if (! strcmp (argv[i], "-print-multi-directory"))
3872 else if (! strcmp (argv[i], "-print-multi-os-directory"))
3874 else if (! strcmp (argv[i], "-ftarget-help"))
3876 else if (! strcmp (argv[i], "-fhelp"))
3878 else if (argv[i][0] == '+' && argv[i][1] == 'e')
3880 /* Compensate for the +e options to the C++ front-end;
3881 they're there simply for cfront call-compatibility. We do
3882 some magic in default_compilers to pass them down properly.
3883 Note we deliberately start at the `+' here, to avoid passing
3884 -e0 or -e1 down into the linker. */
3885 switches[n_switches].part1 = &argv[i][0];
3886 switches[n_switches].args = 0;
3887 switches[n_switches].live_cond = SWITCH_OK;
3888 switches[n_switches].validated = 0;
3891 else if (strncmp (argv[i], "-Wl,", 4) == 0)
3894 /* Split the argument at commas. */
3896 for (j = 4; argv[i][j]; j++)
3897 if (argv[i][j] == ',')
3899 infiles[n_infiles].language = "*";
3900 infiles[n_infiles++].name
3901 = save_string (argv[i] + prev, j - prev);
3904 /* Record the part after the last comma. */
3905 infiles[n_infiles].language = "*";
3906 infiles[n_infiles++].name = argv[i] + prev;
3908 else if (strcmp (argv[i], "-Xlinker") == 0)
3910 infiles[n_infiles].language = "*";
3911 infiles[n_infiles++].name = argv[++i];
3913 else if (strcmp (argv[i], "-Xassembler") == 0)
3915 infiles[n_infiles].language = "*";
3916 infiles[n_infiles++].name = argv[++i];
3918 else if (strcmp (argv[i], "-Xpreprocessor") == 0)
3920 infiles[n_infiles].language = "*";
3921 infiles[n_infiles++].name = argv[++i];
3923 else if (strcmp (argv[i], "-l") == 0)
3924 { /* POSIX allows separation of -l and the lib arg;
3925 canonicalize by concatenating -l with its arg */
3926 infiles[n_infiles].language = "*";
3927 infiles[n_infiles++].name = concat ("-l", argv[++i], NULL);
3929 else if (strncmp (argv[i], "-l", 2) == 0)
3931 infiles[n_infiles].language = "*";
3932 infiles[n_infiles++].name = argv[i];
3934 else if (strcmp (argv[i], "-specs") == 0)
3936 else if (strncmp (argv[i], "-specs=", 7) == 0)
3938 else if (strcmp (argv[i], "-time") == 0)
3940 else if (strcmp (argv[i], "-###") == 0)
3942 else if (argv[i][0] == '-' && argv[i][1] != 0)
3944 const char *p = &argv[i][1];
3949 if (p[1] == 0 && i + 1 == argc)
3950 fatal ("argument to `-x' is missing");
3952 spec_lang = argv[++i];
3955 if (! strcmp (spec_lang, "none"))
3956 /* Suppress the warning if -xnone comes after the last input
3957 file, because alternate command interfaces like g++ might
3958 find it useful to place -xnone after each input file. */
3961 last_language_n_infiles = n_infiles;
3964 switches[n_switches].part1 = p;
3965 /* Deal with option arguments in separate argv elements. */
3966 if ((SWITCH_TAKES_ARG (c) > (p[1] != 0))
3967 || WORD_SWITCH_TAKES_ARG (p))
3970 int n_args = WORD_SWITCH_TAKES_ARG (p);
3974 /* Count only the option arguments in separate argv elements. */
3975 n_args = SWITCH_TAKES_ARG (c) - (p[1] != 0);
3977 if (i + n_args >= argc)
3978 fatal ("argument to `-%s' is missing", p);
3979 switches[n_switches].args
3980 = xmalloc ((n_args + 1) * sizeof(const char *));
3982 switches[n_switches].args[j++] = argv[++i];
3983 /* Null-terminate the vector. */
3984 switches[n_switches].args[j] = 0;
3986 else if (strchr (switches_need_spaces, c))
3988 /* On some systems, ld cannot handle some options without
3989 a space. So split the option from its argument. */
3990 char *part1 = xmalloc (2);
3994 switches[n_switches].part1 = part1;
3995 switches[n_switches].args = xmalloc (2 * sizeof (const char *));
3996 switches[n_switches].args[0] = xstrdup (p+1);
3997 switches[n_switches].args[1] = 0;
4000 switches[n_switches].args = 0;
4002 switches[n_switches].live_cond = SWITCH_OK;
4003 switches[n_switches].validated = 0;
4004 switches[n_switches].ordering = 0;
4005 /* These are always valid, since gcc.c itself understands them. */
4006 if (!strcmp (p, "save-temps")
4007 || !strcmp (p, "static-libgcc")
4008 || !strcmp (p, "shared-libgcc")
4009 || !strcmp (p, "pipe"))
4010 switches[n_switches].validated = 1;
4013 char ch = switches[n_switches].part1[0];
4015 switches[n_switches].validated = 1;
4021 #ifdef HAVE_TARGET_OBJECT_SUFFIX
4022 argv[i] = convert_filename (argv[i], 0, access (argv[i], F_OK));
4025 if (strcmp (argv[i], "-") != 0 && access (argv[i], F_OK) < 0)
4027 perror_with_name (argv[i]);
4032 infiles[n_infiles].language = spec_lang;
4033 infiles[n_infiles++].name = argv[i];
4038 if (n_infiles == last_language_n_infiles && spec_lang != 0)
4039 error ("warning: `-x %s' after last input file has no effect", spec_lang);
4041 /* Ensure we only invoke each subprocess once. */
4042 if (target_help_flag || print_help_list)
4046 /* Create a dummy input file, so that we can pass --target-help on to
4047 the various sub-processes. */
4048 infiles[0].language = "c";
4049 infiles[0].name = "help-dummy";
4051 if (target_help_flag)
4053 switches[n_switches].part1 = "--target-help";
4054 switches[n_switches].args = 0;
4055 switches[n_switches].live_cond = SWITCH_OK;
4056 switches[n_switches].validated = 0;
4061 if (print_help_list)
4063 switches[n_switches].part1 = "--help";
4064 switches[n_switches].args = 0;
4065 switches[n_switches].live_cond = SWITCH_OK;
4066 switches[n_switches].validated = 0;
4072 switches[n_switches].part1 = 0;
4073 infiles[n_infiles].name = 0;
4076 /* Store switches not filtered out by %<S in spec in COLLECT_GCC_OPTIONS
4077 and place that in the environment. */
4080 set_collect_gcc_options (void)
4085 /* Build COLLECT_GCC_OPTIONS to have all of the options specified to
4087 obstack_grow (&collect_obstack, "COLLECT_GCC_OPTIONS=",
4088 sizeof ("COLLECT_GCC_OPTIONS=") - 1);
4091 for (i = 0; (int) i < n_switches; i++)
4093 const char *const *args;
4096 obstack_grow (&collect_obstack, " ", 1);
4100 /* Ignore elided switches. */
4101 if (switches[i].live_cond == SWITCH_IGNORE)
4104 obstack_grow (&collect_obstack, "'-", 2);
4105 q = switches[i].part1;
4106 while ((p = strchr (q, '\'')))
4108 obstack_grow (&collect_obstack, q, p - q);
4109 obstack_grow (&collect_obstack, "'\\''", 4);
4112 obstack_grow (&collect_obstack, q, strlen (q));
4113 obstack_grow (&collect_obstack, "'", 1);
4115 for (args = switches[i].args; args && *args; args++)
4117 obstack_grow (&collect_obstack, " '", 2);
4119 while ((p = strchr (q, '\'')))
4121 obstack_grow (&collect_obstack, q, p - q);
4122 obstack_grow (&collect_obstack, "'\\''", 4);
4125 obstack_grow (&collect_obstack, q, strlen (q));
4126 obstack_grow (&collect_obstack, "'", 1);
4129 obstack_grow (&collect_obstack, "\0", 1);
4130 putenv (obstack_finish (&collect_obstack));
4133 /* Process a spec string, accumulating and running commands. */
4135 /* These variables describe the input file name.
4136 input_file_number is the index on outfiles of this file,
4137 so that the output file name can be stored for later use by %o.
4138 input_basename is the start of the part of the input file
4139 sans all directory names, and basename_length is the number
4140 of characters starting there excluding the suffix .c or whatever. */
4142 static const char *input_filename;
4143 static int input_file_number;
4144 size_t input_filename_length;
4145 static int basename_length;
4146 static int suffixed_basename_length;
4147 static const char *input_basename;
4148 static const char *input_suffix;
4149 static struct stat input_stat;
4150 static int input_stat_set;
4152 /* The compiler used to process the current input file. */
4153 static struct compiler *input_file_compiler;
4155 /* These are variables used within do_spec and do_spec_1. */
4157 /* Nonzero if an arg has been started and not yet terminated
4158 (with space, tab or newline). */
4159 static int arg_going;
4161 /* Nonzero means %d or %g has been seen; the next arg to be terminated
4162 is a temporary file name. */
4163 static int delete_this_arg;
4165 /* Nonzero means %w has been seen; the next arg to be terminated
4166 is the output file name of this compilation. */
4167 static int this_is_output_file;
4169 /* Nonzero means %s has been seen; the next arg to be terminated
4170 is the name of a library file and we should try the standard
4171 search dirs for it. */
4172 static int this_is_library_file;
4174 /* Nonzero means that the input of this command is coming from a pipe. */
4175 static int input_from_pipe;
4177 /* Nonnull means substitute this for any suffix when outputting a switches
4179 static const char *suffix_subst;
4181 /* Process the spec SPEC and run the commands specified therein.
4182 Returns 0 if the spec is successfully processed; -1 if failed. */
4185 do_spec (const char *spec)
4189 value = do_spec_2 (spec);
4191 /* Force out any unfinished command.
4192 If -pipe, this forces out the last command if it ended in `|'. */
4195 if (argbuf_index > 0 && !strcmp (argbuf[argbuf_index - 1], "|"))
4198 set_collect_gcc_options ();
4200 if (argbuf_index > 0)
4208 do_spec_2 (const char *spec)
4215 delete_this_arg = 0;
4216 this_is_output_file = 0;
4217 this_is_library_file = 0;
4218 input_from_pipe = 0;
4219 suffix_subst = NULL;
4221 result = do_spec_1 (spec, 0, NULL);
4223 /* End any pending argument. */
4226 obstack_1grow (&obstack, 0);
4227 string = obstack_finish (&obstack);
4228 if (this_is_library_file)
4229 string = find_file (string);
4230 store_arg (string, delete_this_arg, this_is_output_file);
4231 if (this_is_output_file)
4232 outfiles[input_file_number] = string;
4240 /* Process the given spec string and add any new options to the end
4241 of the switches/n_switches array. */
4244 do_option_spec (const char *name, const char *spec)
4246 unsigned int i, value_count, value_len;
4247 const char *p, *q, *value;
4248 char *tmp_spec, *tmp_spec_p;
4250 if (configure_default_options[0].name == NULL)
4253 for (i = 0; i < ARRAY_SIZE (configure_default_options); i++)
4254 if (strcmp (configure_default_options[i].name, name) == 0)
4256 if (i == ARRAY_SIZE (configure_default_options))
4259 value = configure_default_options[i].value;
4260 value_len = strlen (value);
4262 /* Compute the size of the final spec. */
4265 while ((p = strstr (p, "%(VALUE)")) != NULL)
4271 /* Replace each %(VALUE) by the specified value. */
4272 tmp_spec = alloca (strlen (spec) + 1
4273 + value_count * (value_len - strlen ("%(VALUE)")));
4274 tmp_spec_p = tmp_spec;
4276 while ((p = strstr (q, "%(VALUE)")) != NULL)
4278 memcpy (tmp_spec_p, q, p - q);
4279 tmp_spec_p = tmp_spec_p + (p - q);
4280 memcpy (tmp_spec_p, value, value_len);
4281 tmp_spec_p += value_len;
4282 q = p + strlen ("%(VALUE)");
4284 strcpy (tmp_spec_p, q);
4286 do_self_spec (tmp_spec);
4289 /* Process the given spec string and add any new options to the end
4290 of the switches/n_switches array. */
4293 do_self_spec (const char *spec)
4296 do_spec_1 (" ", 0, NULL);
4298 if (argbuf_index > 0)
4303 n_switches += argbuf_index;
4304 switches = xrealloc (switches,
4305 sizeof (struct switchstr) * (n_switches + 1));
4307 switches[n_switches] = switches[first];
4308 for (i = 0; i < argbuf_index; i++)
4310 struct switchstr *sw;
4312 /* Each switch should start with '-'. */
4313 if (argbuf[i][0] != '-')
4316 sw = &switches[i + first];
4317 sw->part1 = &argbuf[i][1];
4319 sw->live_cond = SWITCH_OK;
4326 /* Process the sub-spec SPEC as a portion of a larger spec.
4327 This is like processing a whole spec except that we do
4328 not initialize at the beginning and we do not supply a
4329 newline by default at the end.
4330 INSWITCH nonzero means don't process %-sequences in SPEC;
4331 in this case, % is treated as an ordinary character.
4332 This is used while substituting switches.
4333 INSWITCH nonzero also causes SPC not to terminate an argument.
4335 Value is zero unless a line was finished
4336 and the command on that line reported an error. */
4339 do_spec_1 (const char *spec, int inswitch, const char *soft_matched_part)
4341 const char *p = spec;
4348 /* If substituting a switch, treat all chars like letters.
4349 Otherwise, NL, SPC, TAB and % are special. */
4350 switch (inswitch ? 'a' : c)
4353 /* End of line: finish any pending argument,
4354 then run the pending command if one has been started. */
4357 obstack_1grow (&obstack, 0);
4358 string = obstack_finish (&obstack);
4359 if (this_is_library_file)
4360 string = find_file (string);
4361 store_arg (string, delete_this_arg, this_is_output_file);
4362 if (this_is_output_file)
4363 outfiles[input_file_number] = string;
4367 if (argbuf_index > 0 && !strcmp (argbuf[argbuf_index - 1], "|"))
4369 /* A `|' before the newline means use a pipe here,
4370 but only if -pipe was specified.
4371 Otherwise, execute now and don't pass the `|' as an arg. */
4374 input_from_pipe = 1;
4381 set_collect_gcc_options ();
4383 if (argbuf_index > 0)
4389 /* Reinitialize for a new command, and for a new argument. */
4392 delete_this_arg = 0;
4393 this_is_output_file = 0;
4394 this_is_library_file = 0;
4395 input_from_pipe = 0;
4399 /* End any pending argument. */
4402 obstack_1grow (&obstack, 0);
4403 string = obstack_finish (&obstack);
4404 if (this_is_library_file)
4405 string = find_file (string);
4406 store_arg (string, delete_this_arg, this_is_output_file);
4407 if (this_is_output_file)
4408 outfiles[input_file_number] = string;
4412 obstack_1grow (&obstack, c);
4418 /* Space or tab ends an argument if one is pending. */
4421 obstack_1grow (&obstack, 0);
4422 string = obstack_finish (&obstack);
4423 if (this_is_library_file)
4424 string = find_file (string);
4425 store_arg (string, delete_this_arg, this_is_output_file);
4426 if (this_is_output_file)
4427 outfiles[input_file_number] = string;
4429 /* Reinitialize for a new argument. */
4431 delete_this_arg = 0;
4432 this_is_output_file = 0;
4433 this_is_library_file = 0;
4440 fatal ("invalid specification! Bug in cc");
4443 obstack_grow (&obstack, input_basename, basename_length);
4448 obstack_grow (&obstack, input_basename, suffixed_basename_length);
4453 delete_this_arg = 2;
4456 /* Dump out the directories specified with LIBRARY_PATH,
4457 followed by the absolute directories
4458 that we search for startfiles. */
4461 struct prefix_list *pl = startfile_prefixes.plist;
4462 size_t bufsize = 100;
4463 char *buffer = xmalloc (bufsize);
4466 for (; pl; pl = pl->next)
4468 #ifdef RELATIVE_PREFIX_NOT_LINKDIR
4469 /* Used on systems which record the specified -L dirs
4470 and use them to search for dynamic linking. */
4471 /* Relative directories always come from -B,
4472 and it is better not to use them for searching
4473 at run time. In particular, stage1 loses. */
4474 if (!IS_ABSOLUTE_PATH (pl->prefix))
4477 /* Try subdirectory if there is one. */
4478 if (multilib_dir != NULL
4479 || (pl->os_multilib && multilib_os_dir != NULL))
4481 const char *multi_dir;
4483 multi_dir = pl->os_multilib ? multilib_os_dir
4485 if (machine_suffix && multilib_dir)
4487 if (strlen (pl->prefix) + strlen (machine_suffix)
4489 bufsize = (strlen (pl->prefix)
4490 + strlen (machine_suffix)) * 2 + 1;
4491 buffer = xrealloc (buffer, bufsize);
4492 strcpy (buffer, pl->prefix);
4493 strcat (buffer, machine_suffix);
4494 if (is_directory (buffer, multilib_dir, 1))
4496 do_spec_1 ("-L", 0, NULL);
4497 #ifdef SPACE_AFTER_L_OPTION
4498 do_spec_1 (" ", 0, NULL);
4500 do_spec_1 (buffer, 1, NULL);
4501 do_spec_1 (multilib_dir, 1, NULL);
4502 /* Make this a separate argument. */
4503 do_spec_1 (" ", 0, NULL);
4506 if (!pl->require_machine_suffix)
4508 if (is_directory (pl->prefix, multi_dir, 1))
4510 do_spec_1 ("-L", 0, NULL);
4511 #ifdef SPACE_AFTER_L_OPTION
4512 do_spec_1 (" ", 0, NULL);
4514 do_spec_1 (pl->prefix, 1, NULL);
4515 do_spec_1 (multi_dir, 1, NULL);
4516 /* Make this a separate argument. */
4517 do_spec_1 (" ", 0, NULL);
4523 if (is_directory (pl->prefix, machine_suffix, 1))
4525 do_spec_1 ("-L", 0, NULL);
4526 #ifdef SPACE_AFTER_L_OPTION
4527 do_spec_1 (" ", 0, NULL);
4529 do_spec_1 (pl->prefix, 1, NULL);
4530 /* Remove slash from machine_suffix. */
4531 if (strlen (machine_suffix) >= bufsize)
4532 bufsize = strlen (machine_suffix) * 2 + 1;
4533 buffer = xrealloc (buffer, bufsize);
4534 strcpy (buffer, machine_suffix);
4535 idx = strlen (buffer);
4536 if (IS_DIR_SEPARATOR (buffer[idx - 1]))
4537 buffer[idx - 1] = 0;
4538 do_spec_1 (buffer, 1, NULL);
4539 /* Make this a separate argument. */
4540 do_spec_1 (" ", 0, NULL);
4543 if (!pl->require_machine_suffix)
4545 if (is_directory (pl->prefix, "", 1))
4547 do_spec_1 ("-L", 0, NULL);
4548 #ifdef SPACE_AFTER_L_OPTION
4549 do_spec_1 (" ", 0, NULL);
4551 /* Remove slash from pl->prefix. */
4552 if (strlen (pl->prefix) >= bufsize)
4553 bufsize = strlen (pl->prefix) * 2 + 1;
4554 buffer = xrealloc (buffer, bufsize);
4555 strcpy (buffer, pl->prefix);
4556 idx = strlen (buffer);
4557 if (IS_DIR_SEPARATOR (buffer[idx - 1]))
4558 buffer[idx - 1] = 0;
4559 do_spec_1 (buffer, 1, NULL);
4560 /* Make this a separate argument. */
4561 do_spec_1 (" ", 0, NULL);
4570 /* %efoo means report an error with `foo' as error message
4571 and don't execute any more commands for this file. */
4575 while (*p != 0 && *p != '\n')
4577 buf = alloca (p - q + 1);
4578 strncpy (buf, q, p - q);
4585 /* %nfoo means report a notice with `foo' on stderr. */
4589 while (*p != 0 && *p != '\n')
4591 buf = alloca (p - q + 1);
4592 strncpy (buf, q, p - q);
4594 notice ("%s\n", buf);
4604 /* If save_temps_flag is off, and the HOST_BIT_BUCKET is
4605 defined, and it is not a directory, and it is
4606 writable, use it. Otherwise, treat this like any
4607 other temporary file. */
4609 if ((!save_temps_flag)
4610 && (stat (HOST_BIT_BUCKET, &st) == 0) && (!S_ISDIR (st.st_mode))
4611 && (access (HOST_BIT_BUCKET, W_OK) == 0))
4613 obstack_grow (&obstack, HOST_BIT_BUCKET,
4614 strlen (HOST_BIT_BUCKET));
4615 delete_this_arg = 0;
4620 goto create_temp_file;
4624 obstack_1grow (&obstack, '-');
4625 delete_this_arg = 0;
4628 /* consume suffix */
4629 while (*p == '.' || ISALPHA ((unsigned char) *p))
4631 if (p[0] == '%' && p[1] == 'O')
4636 goto create_temp_file;
4640 /* consume suffix */
4641 while (*p == '.' || ISALPHA ((unsigned char) *p))
4643 if (p[0] == '%' && p[1] == 'O')
4648 goto create_temp_file;
4654 struct temp_name *t;
4656 const char *suffix = p;
4657 char *saved_suffix = NULL;
4659 while (*p == '.' || ISALPHA ((unsigned char) *p))
4661 suffix_length = p - suffix;
4662 if (p[0] == '%' && p[1] == 'O')
4665 /* We don't support extra suffix characters after %O. */
4666 if (*p == '.' || ISALPHA ((unsigned char) *p))
4668 if (suffix_length == 0)
4669 suffix = TARGET_OBJECT_SUFFIX;
4673 = xmalloc (suffix_length
4674 + strlen (TARGET_OBJECT_SUFFIX));
4675 strncpy (saved_suffix, suffix, suffix_length);
4676 strcpy (saved_suffix + suffix_length,
4677 TARGET_OBJECT_SUFFIX);
4679 suffix_length += strlen (TARGET_OBJECT_SUFFIX);
4682 /* If the input_filename has the same suffix specified
4683 for the %g, %u, or %U, and -save-temps is specified,
4684 we could end up using that file as an intermediate
4685 thus clobbering the user's source file (.e.g.,
4686 gcc -save-temps foo.s would clobber foo.s with the
4687 output of cpp0). So check for this condition and
4688 generate a temp file as the intermediate. */
4690 if (save_temps_flag)
4692 temp_filename_length = basename_length + suffix_length;
4693 temp_filename = alloca (temp_filename_length + 1);
4694 strncpy ((char *) temp_filename, input_basename, basename_length);
4695 strncpy ((char *) temp_filename + basename_length, suffix,
4697 *((char *) temp_filename + temp_filename_length) = '\0';
4698 if (strcmp (temp_filename, input_filename) != 0)
4700 struct stat st_temp;
4702 /* Note, set_input() resets input_stat_set to 0. */
4703 if (input_stat_set == 0)
4705 input_stat_set = stat (input_filename, &input_stat);
4706 if (input_stat_set >= 0)
4710 /* If we have the stat for the input_filename
4711 and we can do the stat for the temp_filename
4712 then the they could still refer to the same
4713 file if st_dev/st_ino's are the same. */
4715 if (input_stat_set != 1
4716 || stat (temp_filename, &st_temp) < 0
4717 || input_stat.st_dev != st_temp.st_dev
4718 || input_stat.st_ino != st_temp.st_ino)
4720 temp_filename = save_string (temp_filename,
4721 temp_filename_length + 1);
4722 obstack_grow (&obstack, temp_filename,
4723 temp_filename_length);
4725 delete_this_arg = 0;
4731 /* See if we already have an association of %g/%u/%U and
4733 for (t = temp_names; t; t = t->next)
4734 if (t->length == suffix_length
4735 && strncmp (t->suffix, suffix, suffix_length) == 0
4736 && t->unique == (c == 'u' || c == 'U' || c == 'j'))
4739 /* Make a new association if needed. %u and %j
4741 if (t == 0 || c == 'u' || c == 'j')
4745 t = xmalloc (sizeof (struct temp_name));
4746 t->next = temp_names;
4749 t->length = suffix_length;
4752 t->suffix = saved_suffix;
4753 saved_suffix = NULL;
4756 t->suffix = save_string (suffix, suffix_length);
4757 t->unique = (c == 'u' || c == 'U' || c == 'j');
4758 temp_filename = make_temp_file (t->suffix);
4759 temp_filename_length = strlen (temp_filename);
4760 t->filename = temp_filename;
4761 t->filename_length = temp_filename_length;
4765 free (saved_suffix);
4767 obstack_grow (&obstack, t->filename, t->filename_length);
4768 delete_this_arg = 1;
4776 for (i = 0; (int) i < n_infiles; i++)
4777 store_arg (infiles[i].name, 0, 0);
4781 obstack_grow (&obstack, input_filename, input_filename_length);
4788 struct prefix_list *pl = include_prefixes.plist;
4790 if (gcc_exec_prefix)
4792 do_spec_1 ("-iprefix", 1, NULL);
4793 /* Make this a separate argument. */
4794 do_spec_1 (" ", 0, NULL);
4795 do_spec_1 (gcc_exec_prefix, 1, NULL);
4796 do_spec_1 (" ", 0, NULL);
4799 if (target_system_root_changed ||
4800 (target_system_root && target_sysroot_hdrs_suffix))
4802 do_spec_1 ("-isysroot", 1, NULL);
4803 /* Make this a separate argument. */
4804 do_spec_1 (" ", 0, NULL);
4805 do_spec_1 (target_system_root, 1, NULL);
4806 if (target_sysroot_hdrs_suffix)
4807 do_spec_1 (target_sysroot_hdrs_suffix, 1, NULL);
4808 do_spec_1 (" ", 0, NULL);
4811 for (; pl; pl = pl->next)
4813 do_spec_1 ("-isystem", 1, NULL);
4814 /* Make this a separate argument. */
4815 do_spec_1 (" ", 0, NULL);
4816 do_spec_1 (pl->prefix, 1, NULL);
4817 do_spec_1 (" ", 0, NULL);
4824 int max = n_infiles;
4825 max += lang_specific_extra_outfiles;
4827 for (i = 0; i < max; i++)
4829 store_arg (outfiles[i], 0, 0);
4834 obstack_grow (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX));
4839 this_is_library_file = 1;
4843 outfiles[input_file_number] = NULL;
4847 this_is_output_file = 1;
4852 int cur_index = argbuf_index;
4853 /* Handle the {...} following the %W. */
4856 p = handle_braces (p + 1);
4859 /* End any pending argument. */
4862 obstack_1grow (&obstack, 0);
4863 string = obstack_finish (&obstack);
4864 if (this_is_library_file)
4865 string = find_file (string);
4866 store_arg (string, delete_this_arg, this_is_output_file);
4867 if (this_is_output_file)
4868 outfiles[input_file_number] = string;
4871 /* If any args were output, mark the last one for deletion
4873 if (argbuf_index != cur_index)
4874 record_temp_file (argbuf[argbuf_index - 1], 0, 1);
4878 /* %x{OPTION} records OPTION for %X to output. */
4884 /* Skip past the option value and make a copy. */
4889 string = save_string (p1 + 1, p - p1 - 2);
4891 /* See if we already recorded this option. */
4892 for (i = 0; i < n_linker_options; i++)
4893 if (! strcmp (string, linker_options[i]))
4899 /* This option is new; add it. */
4900 add_linker_option (string, strlen (string));
4904 /* Dump out the options accumulated previously using %x. */
4906 for (i = 0; i < n_linker_options; i++)
4908 do_spec_1 (linker_options[i], 1, NULL);
4909 /* Make each accumulated option a separate argument. */
4910 do_spec_1 (" ", 0, NULL);
4914 /* Dump out the options accumulated previously using -Wa,. */
4916 for (i = 0; i < n_assembler_options; i++)
4918 do_spec_1 (assembler_options[i], 1, NULL);
4919 /* Make each accumulated option a separate argument. */
4920 do_spec_1 (" ", 0, NULL);
4924 /* Dump out the options accumulated previously using -Wp,. */
4926 for (i = 0; i < n_preprocessor_options; i++)
4928 do_spec_1 (preprocessor_options[i], 1, NULL);
4929 /* Make each accumulated option a separate argument. */
4930 do_spec_1 (" ", 0, NULL);
4934 /* Here are digits and numbers that just process
4935 a certain constant string as a spec. */
4938 value = do_spec_1 (cc1_spec, 0, NULL);
4944 value = do_spec_1 (cc1plus_spec, 0, NULL);
4950 value = do_spec_1 (asm_spec, 0, NULL);
4956 value = do_spec_1 (asm_final_spec, 0, NULL);
4963 const char *const spec
4964 = (input_file_compiler->cpp_spec
4965 ? input_file_compiler->cpp_spec
4967 value = do_spec_1 (spec, 0, NULL);
4974 value = do_spec_1 (endfile_spec, 0, NULL);
4980 value = do_spec_1 (link_spec, 0, NULL);
4986 value = do_spec_1 (lib_spec, 0, NULL);
4992 value = do_spec_1 (libgcc_spec, 0, NULL);
4998 if (multilib_dir && strcmp (multilib_dir, ".") != 0)
5004 len = strlen (multilib_dir);
5005 obstack_blank (&obstack, len + 1);
5006 p = obstack_next_free (&obstack) - (len + 1);
5009 for (q = multilib_dir; *q ; ++q, ++p)
5010 *p = (IS_DIR_SEPARATOR (*q) ? '_' : *q);
5015 /* We assume there is a directory
5016 separator at the end of this string. */
5017 if (target_system_root)
5019 obstack_grow (&obstack, target_system_root,
5020 strlen (target_system_root));
5021 if (target_sysroot_suffix)
5022 obstack_grow (&obstack, target_sysroot_suffix,
5023 strlen (target_sysroot_suffix));
5028 value = do_spec_1 (startfile_spec, 0, NULL);
5033 /* Here we define characters other than letters and digits. */
5036 p = handle_braces (p);
5042 p = handle_spec_function (p);
5048 obstack_1grow (&obstack, '%');
5055 while (p[len] && p[len] != ' ' && p[len] != '%')
5057 suffix_subst = save_string (p - 1, len + 1);
5062 /* Henceforth ignore the option(s) matching the pattern
5067 int have_wildcard = 0;
5070 while (p[len] && p[len] != ' ' && p[len] != '\t')
5073 if (p[len-1] == '*')
5076 for (i = 0; i < n_switches; i++)
5077 if (!strncmp (switches[i].part1, p, len - have_wildcard)
5078 && (have_wildcard || switches[i].part1[len] == '\0'))
5080 switches[i].live_cond = SWITCH_IGNORE;
5081 switches[i].validated = 1;
5089 if (soft_matched_part)
5091 do_spec_1 (soft_matched_part, 1, NULL);
5092 do_spec_1 (" ", 0, NULL);
5095 /* Catch the case where a spec string contains something like
5096 '%{foo:%*}'. ie there is no * in the pattern on the left
5097 hand side of the :. */
5098 error ("spec failure: '%%*' has not been initialized by pattern match");
5101 /* Process a string found as the value of a spec given by name.
5102 This feature allows individual machine descriptions
5103 to add and use their own specs.
5104 %[...] modifies -D options the way %P does;
5105 %(...) uses the spec unmodified. */
5107 error ("warning: use of obsolete %%[ operator in specs");
5110 const char *name = p;
5111 struct spec_list *sl;
5114 /* The string after the S/P is the name of a spec that is to be
5116 while (*p && *p != ')' && *p != ']')
5119 /* See if it's in the list. */
5120 for (len = p - name, sl = specs; sl; sl = sl->next)
5121 if (sl->name_len == len && !strncmp (sl->name, name, len))
5123 name = *(sl->ptr_spec);
5125 notice ("Processing spec %c%s%c, which is '%s'\n",
5126 c, sl->name, (c == '(') ? ')' : ']', name);
5135 value = do_spec_1 (name, 0, NULL);
5141 char *x = alloca (strlen (name) * 2 + 1);
5143 const char *y = name;
5146 /* Copy all of NAME into BUF, but put __ after
5147 every -D and at the end of each arg. */
5150 if (! strncmp (y, "-D", 2))
5161 && (*y == ' ' || *y == '\t' || *y == '='
5162 || *y == '}' || *y == 0))
5175 value = do_spec_1 (buf, 0, NULL);
5181 /* Discard the closing paren or bracket. */
5188 error ("spec failure: unrecognized spec option '%c'", c);
5194 /* Backslash: treat next character as ordinary. */
5199 /* Ordinary character: put it into the current argument. */
5200 obstack_1grow (&obstack, c);
5204 /* End of string. If we are processing a spec function, we need to
5205 end any pending argument. */
5206 if (processing_spec_function && arg_going)
5208 obstack_1grow (&obstack, 0);
5209 string = obstack_finish (&obstack);
5210 if (this_is_library_file)
5211 string = find_file (string);
5212 store_arg (string, delete_this_arg, this_is_output_file);
5213 if (this_is_output_file)
5214 outfiles[input_file_number] = string;
5221 /* Look up a spec function. */
5223 static const struct spec_function *
5224 lookup_spec_function (const char *name)
5226 static const struct spec_function * const spec_function_tables[] =
5228 static_spec_functions,
5229 lang_specific_spec_functions,
5231 const struct spec_function *sf;
5234 for (i = 0; i < ARRAY_SIZE (spec_function_tables); i++)
5236 for (sf = spec_function_tables[i]; sf->name != NULL; sf++)
5237 if (strcmp (sf->name, name) == 0)
5244 /* Evaluate a spec function. */
5247 eval_spec_function (const char *func, const char *args)
5249 const struct spec_function *sf;
5250 const char *funcval;
5252 /* Saved spec processing context. */
5253 int save_argbuf_index;
5254 int save_argbuf_length;
5255 const char **save_argbuf;
5258 int save_delete_this_arg;
5259 int save_this_is_output_file;
5260 int save_this_is_library_file;
5261 int save_input_from_pipe;
5262 const char *save_suffix_subst;
5265 sf = lookup_spec_function (func);
5267 fatal ("unknown spec function `%s'", func);
5269 /* Push the spec processing context. */
5270 save_argbuf_index = argbuf_index;
5271 save_argbuf_length = argbuf_length;
5272 save_argbuf = argbuf;
5274 save_arg_going = arg_going;
5275 save_delete_this_arg = delete_this_arg;
5276 save_this_is_output_file = this_is_output_file;
5277 save_this_is_library_file = this_is_library_file;
5278 save_input_from_pipe = input_from_pipe;
5279 save_suffix_subst = suffix_subst;
5281 /* Create a new spec processing context, and build the function
5285 if (do_spec_2 (args) < 0)
5286 fatal ("error in args to spec function `%s'", func);
5288 /* argbuf_index is an index for the next argument to be inserted, and
5289 so contains the count of the args already inserted. */
5291 funcval = (*sf->func) (argbuf_index, argbuf);
5293 /* Pop the spec processing context. */
5294 argbuf_index = save_argbuf_index;
5295 argbuf_length = save_argbuf_length;
5297 argbuf = save_argbuf;
5299 arg_going = save_arg_going;
5300 delete_this_arg = save_delete_this_arg;
5301 this_is_output_file = save_this_is_output_file;
5302 this_is_library_file = save_this_is_library_file;
5303 input_from_pipe = save_input_from_pipe;
5304 suffix_subst = save_suffix_subst;
5309 /* Handle a spec function call of the form:
5313 ARGS is processed as a spec in a separate context and split into an
5314 argument vector in the normal fashion. The function returns a string
5315 containing a spec which we then process in the caller's context, or
5316 NULL if no processing is required. */
5319 handle_spec_function (const char *p)
5322 const char *endp, *funcval;
5325 processing_spec_function++;
5327 /* Get the function name. */
5328 for (endp = p; *endp != '\0'; endp++)
5330 if (*endp == '(') /* ) */
5332 /* Only allow [A-Za-z0-9], -, and _ in function names. */
5333 if (!ISALNUM (*endp) && !(*endp == '-' || *endp == '_'))
5334 fatal ("malformed spec function name");
5336 if (*endp != '(') /* ) */
5337 fatal ("no arguments for spec function");
5338 func = save_string (p, endp - p);
5341 /* Get the arguments. */
5342 for (count = 0; *endp != '\0'; endp++)
5351 else if (*endp == '(') /* ) */
5356 fatal ("malformed spec function arguments");
5357 args = save_string (p, endp - p);
5360 /* p now points to just past the end of the spec function expression. */
5362 funcval = eval_spec_function (func, args);
5363 if (funcval != NULL && do_spec_1 (funcval, 0, NULL) < 0)
5369 processing_spec_function--;
5374 /* Inline subroutine of handle_braces. Returns true if the current
5375 input suffix matches the atom bracketed by ATOM and END_ATOM. */
5377 input_suffix_matches (const char *atom, const char *end_atom)
5379 return (input_suffix
5380 && !strncmp (input_suffix, atom, end_atom - atom)
5381 && input_suffix[end_atom - atom] == '\0');
5384 /* Inline subroutine of handle_braces. Returns true if a switch
5385 matching the atom bracketed by ATOM and END_ATOM appeared on the
5388 switch_matches (const char *atom, const char *end_atom, int starred)
5391 int len = end_atom - atom;
5392 int plen = starred ? len : -1;
5394 for (i = 0; i < n_switches; i++)
5395 if (!strncmp (switches[i].part1, atom, len)
5396 && (starred || switches[i].part1[len] == '\0')
5397 && check_live_switch (i, plen))
5403 /* Inline subroutine of handle_braces. Mark all of the switches which
5404 match ATOM (extends to END_ATOM; STARRED indicates whether there
5405 was a star after the atom) for later processing. */
5407 mark_matching_switches (const char *atom, const char *end_atom, int starred)
5410 int len = end_atom - atom;
5411 int plen = starred ? len : -1;
5413 for (i = 0; i < n_switches; i++)
5414 if (!strncmp (switches[i].part1, atom, len)
5415 && (starred || switches[i].part1[len] == '\0')
5416 && check_live_switch (i, plen))
5417 switches[i].ordering = 1;
5420 /* Inline subroutine of handle_braces. Process all the currently
5421 marked switches through give_switch, and clear the marks. */
5423 process_marked_switches (void)
5427 for (i = 0; i < n_switches; i++)
5428 if (switches[i].ordering == 1)
5430 switches[i].ordering = 0;
5435 /* Handle a %{ ... } construct. P points just inside the leading {.
5436 Returns a pointer one past the end of the brace block, or 0
5437 if we call do_spec_1 and that returns -1. */
5440 handle_braces (const char *p)
5442 const char *atom, *end_atom;
5443 const char *d_atom = NULL, *d_end_atom = NULL;
5450 bool a_must_be_last = false;
5451 bool ordered_set = false;
5452 bool disjunct_set = false;
5453 bool disj_matched = false;
5454 bool disj_starred = true;
5455 bool n_way_choice = false;
5456 bool n_way_matched = false;
5458 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
5465 /* Scan one "atom" (S in the description above of %{}, possibly
5466 with !, ., or * modifiers). */
5467 a_matched = a_is_suffix = a_is_starred = a_is_negated = false;
5471 p++, a_is_negated = true;
5475 p++, a_is_suffix = true;
5478 while (ISIDNUM(*p) || *p == '-' || *p == '+' || *p == '='
5479 || *p == ',' || *p == '.' || *p == '@')
5484 p++, a_is_starred = 1;
5487 if (*p == '&' || *p == '}')
5489 /* Substitute the switch(es) indicated by the current atom. */
5491 if (disjunct_set || n_way_choice || a_is_negated || a_is_suffix
5492 || atom == end_atom)
5495 mark_matching_switches (atom, end_atom, a_is_starred);
5498 process_marked_switches ();
5500 else if (*p == '|' || *p == ':')
5502 /* Substitute some text if the current atom appears as a switch
5504 disjunct_set = true;
5508 if (atom == end_atom)
5510 if (!n_way_choice || disj_matched || *p == '|'
5511 || a_is_negated || a_is_suffix || a_is_starred)
5514 /* An empty term may appear as the last choice of an
5515 N-way choice set; it means "otherwise". */
5516 a_must_be_last = true;
5517 disj_matched = !n_way_matched;
5518 disj_starred = false;
5522 if (a_is_suffix && a_is_starred)
5526 disj_starred = false;
5528 /* Don't bother testing this atom if we already have a
5530 if (!disj_matched && !n_way_matched)
5533 a_matched = input_suffix_matches (atom, end_atom);
5535 a_matched = switch_matches (atom, end_atom, a_is_starred);
5537 if (a_matched != a_is_negated)
5539 disj_matched = true;
5541 d_end_atom = end_atom;
5548 /* Found the body, that is, the text to substitute if the
5549 current disjunction matches. */
5550 p = process_brace_body (p + 1, d_atom, d_end_atom, disj_starred,
5551 disj_matched && !n_way_matched);
5555 /* If we have an N-way choice, reset state for the next
5559 n_way_choice = true;
5560 n_way_matched |= disj_matched;
5561 disj_matched = false;
5562 disj_starred = true;
5563 d_atom = d_end_atom = NULL;
5570 while (*p++ != '}');
5577 /* Subroutine of handle_braces. Scan and process a brace substitution body
5578 (X in the description of %{} syntax). P points one past the colon;
5579 ATOM and END_ATOM bracket the first atom which was found to be true
5580 (present) in the current disjunction; STARRED indicates whether all
5581 the atoms in the current disjunction were starred (for syntax validation);
5582 MATCHED indicates whether the disjunction matched or not, and therefore
5583 whether or not the body is to be processed through do_spec_1 or just
5584 skipped. Returns a pointer to the closing } or ;, or 0 if do_spec_1
5588 process_brace_body (const char *p, const char *atom, const char *end_atom,
5589 int starred, int matched)
5591 const char *body, *end_body;
5592 unsigned int nesting_level;
5593 bool have_subst = false;
5595 /* Locate the closing } or ;, honoring nested braces.
5596 Trim trailing whitespace. */
5605 if (!--nesting_level)
5608 else if (*p == ';' && nesting_level == 1)
5610 else if (*p == '%' && p[1] == '*' && nesting_level == 1)
5612 else if (*p == '\0')
5618 while (end_body[-1] == ' ' || end_body[-1] == '\t')
5621 if (have_subst && !starred)
5626 /* Copy the substitution body to permanent storage and execute it.
5627 If have_subst is false, this is a simple matter of running the
5628 body through do_spec_1... */
5629 char *string = save_string (body, end_body - body);
5632 if (do_spec_1 (string, 0, NULL) < 0)
5637 /* ... but if have_subst is true, we have to process the
5638 body once for each matching switch, with %* set to the
5639 variant part of the switch. */
5640 unsigned int hard_match_len = end_atom - atom;
5643 for (i = 0; i < n_switches; i++)
5644 if (!strncmp (switches[i].part1, atom, hard_match_len)
5645 && check_live_switch (i, hard_match_len))
5647 if (do_spec_1 (string, 0,
5648 &switches[i].part1[hard_match_len]) < 0)
5650 /* Pass any arguments this switch has. */
5652 suffix_subst = NULL;
5660 /* Return 0 iff switch number SWITCHNUM is obsoleted by a later switch
5661 on the command line. PREFIX_LENGTH is the length of XXX in an {XXX*}
5662 spec, or -1 if either exact match or %* is used.
5664 A -O switch is obsoleted by a later -O switch. A -f, -m, or -W switch
5665 whose value does not begin with "no-" is obsoleted by the same value
5666 with the "no-", similarly for a switch with the "no-" prefix. */
5669 check_live_switch (int switchnum, int prefix_length)
5671 const char *name = switches[switchnum].part1;
5674 /* In the common case of {<at-most-one-letter>*}, a negating
5675 switch would always match, so ignore that case. We will just
5676 send the conflicting switches to the compiler phase. */
5677 if (prefix_length >= 0 && prefix_length <= 1)
5680 /* If we already processed this switch and determined if it was
5681 live or not, return our past determination. */
5682 if (switches[switchnum].live_cond != 0)
5683 return switches[switchnum].live_cond > 0;
5685 /* Now search for duplicate in a manner that depends on the name. */
5689 for (i = switchnum + 1; i < n_switches; i++)
5690 if (switches[i].part1[0] == 'O')
5692 switches[switchnum].validated = 1;
5693 switches[switchnum].live_cond = SWITCH_FALSE;
5698 case 'W': case 'f': case 'm':
5699 if (! strncmp (name + 1, "no-", 3))
5701 /* We have Xno-YYY, search for XYYY. */
5702 for (i = switchnum + 1; i < n_switches; i++)
5703 if (switches[i].part1[0] == name[0]
5704 && ! strcmp (&switches[i].part1[1], &name[4]))
5706 switches[switchnum].validated = 1;
5707 switches[switchnum].live_cond = SWITCH_FALSE;
5713 /* We have XYYY, search for Xno-YYY. */
5714 for (i = switchnum + 1; i < n_switches; i++)
5715 if (switches[i].part1[0] == name[0]
5716 && switches[i].part1[1] == 'n'
5717 && switches[i].part1[2] == 'o'
5718 && switches[i].part1[3] == '-'
5719 && !strcmp (&switches[i].part1[4], &name[1]))
5721 switches[switchnum].validated = 1;
5722 switches[switchnum].live_cond = SWITCH_FALSE;
5729 /* Otherwise the switch is live. */
5730 switches[switchnum].live_cond = SWITCH_LIVE;
5734 /* Pass a switch to the current accumulating command
5735 in the same form that we received it.
5736 SWITCHNUM identifies the switch; it is an index into
5737 the vector of switches gcc received, which is `switches'.
5738 This cannot fail since it never finishes a command line.
5740 If OMIT_FIRST_WORD is nonzero, then we omit .part1 of the argument. */
5743 give_switch (int switchnum, int omit_first_word)
5745 if (switches[switchnum].live_cond == SWITCH_IGNORE)
5748 if (!omit_first_word)
5750 do_spec_1 ("-", 0, NULL);
5751 do_spec_1 (switches[switchnum].part1, 1, NULL);
5754 if (switches[switchnum].args != 0)
5757 for (p = switches[switchnum].args; *p; p++)
5759 const char *arg = *p;
5761 do_spec_1 (" ", 0, NULL);
5764 unsigned length = strlen (arg);
5767 while (length-- && !IS_DIR_SEPARATOR (arg[length]))
5768 if (arg[length] == '.')
5770 ((char *)arg)[length] = 0;
5774 do_spec_1 (arg, 1, NULL);
5776 ((char *)arg)[length] = '.';
5777 do_spec_1 (suffix_subst, 1, NULL);
5780 do_spec_1 (arg, 1, NULL);
5784 do_spec_1 (" ", 0, NULL);
5785 switches[switchnum].validated = 1;
5788 /* Search for a file named NAME trying various prefixes including the
5789 user's -B prefix and some standard ones.
5790 Return the absolute file name found. If nothing is found, return NAME. */
5793 find_file (const char *name)
5797 /* Try multilib_dir if it is defined. */
5798 if (multilib_os_dir != NULL)
5800 newname = find_a_file (&startfile_prefixes, name, R_OK, 1);
5802 /* If we don't find it in the multi library dir, then fall
5803 through and look for it in the normal places. */
5804 if (newname != NULL)
5808 newname = find_a_file (&startfile_prefixes, name, R_OK, 0);
5809 return newname ? newname : name;
5812 /* Determine whether a directory exists. If LINKER, return 0 for
5813 certain fixed names not needed by the linker. If not LINKER, it is
5814 only important to return 0 if the host machine has a small ARG_MAX
5818 is_directory (const char *path1, const char *path2, int linker)
5820 int len1 = strlen (path1);
5821 int len2 = strlen (path2);
5822 char *path = alloca (3 + len1 + len2);
5826 #ifndef SMALL_ARG_MAX
5831 /* Construct the path from the two parts. Ensure the string ends with "/.".
5832 The resulting path will be a directory even if the given path is a
5834 memcpy (path, path1, len1);
5835 memcpy (path + len1, path2, len2);
5836 cp = path + len1 + len2;
5837 if (!IS_DIR_SEPARATOR (cp[-1]))
5838 *cp++ = DIR_SEPARATOR;
5842 /* Exclude directories that the linker is known to search. */
5845 && strcmp (path, concat (dir_separator_str, "lib",
5846 dir_separator_str, ".", NULL)) == 0)
5848 && strcmp (path, concat (dir_separator_str, "usr",
5849 dir_separator_str, "lib",
5850 dir_separator_str, ".", NULL)) == 0)))
5853 return (stat (path, &st) >= 0 && S_ISDIR (st.st_mode));
5856 /* Set up the various global variables to indicate that we're processing
5857 the input file named FILENAME. */
5860 set_input (const char *filename)
5864 input_filename = filename;
5865 input_filename_length = strlen (input_filename);
5867 input_basename = input_filename;
5868 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
5869 /* Skip drive name so 'x:foo' is handled properly. */
5870 if (input_basename[1] == ':')
5871 input_basename += 2;
5873 for (p = input_basename; *p; p++)
5874 if (IS_DIR_SEPARATOR (*p))
5875 input_basename = p + 1;
5877 /* Find a suffix starting with the last period,
5878 and set basename_length to exclude that suffix. */
5879 basename_length = strlen (input_basename);
5880 suffixed_basename_length = basename_length;
5881 p = input_basename + basename_length;
5882 while (p != input_basename && *p != '.')
5884 if (*p == '.' && p != input_basename)
5886 basename_length = p - input_basename;
5887 input_suffix = p + 1;
5892 /* If a spec for 'g', 'u', or 'U' is seen with -save-temps then
5893 we will need to do a stat on the input_filename. The
5894 INPUT_STAT_SET signals that the stat is needed. */
5898 /* On fatal signals, delete all the temporary files. */
5901 fatal_error (int signum)
5903 signal (signum, SIG_DFL);
5904 delete_failure_queue ();
5905 delete_temp_files ();
5906 /* Get the same signal again, this time not handled,
5907 so its normal effect occurs. */
5908 kill (getpid (), signum);
5911 extern int main (int, const char *const *);
5914 main (int argc, const char *const *argv)
5918 int linker_was_run = 0;
5919 int num_linker_inputs = 0;
5920 char *explicit_link_files;
5923 struct user_specs *uptr;
5925 p = argv[0] + strlen (argv[0]);
5926 while (p != argv[0] && !IS_DIR_SEPARATOR (p[-1]))
5930 xmalloc_set_program_name (programname);
5932 #ifdef GCC_DRIVER_HOST_INITIALIZATION
5933 /* Perform host dependent initialization when needed. */
5934 GCC_DRIVER_HOST_INITIALIZATION;
5937 gcc_init_libintl ();
5939 if (signal (SIGINT, SIG_IGN) != SIG_IGN)
5940 signal (SIGINT, fatal_error);
5942 if (signal (SIGHUP, SIG_IGN) != SIG_IGN)
5943 signal (SIGHUP, fatal_error);
5945 if (signal (SIGTERM, SIG_IGN) != SIG_IGN)
5946 signal (SIGTERM, fatal_error);
5948 if (signal (SIGPIPE, SIG_IGN) != SIG_IGN)
5949 signal (SIGPIPE, fatal_error);
5952 /* We *MUST* set SIGCHLD to SIG_DFL so that the wait4() call will
5953 receive the signal. A different setting is inheritable */
5954 signal (SIGCHLD, SIG_DFL);
5957 /* Allocate the argument vector. */
5960 obstack_init (&obstack);
5962 /* Build multilib_select, et. al from the separate lines that make up each
5963 multilib selection. */
5965 const char *const *q = multilib_raw;
5968 obstack_init (&multilib_obstack);
5969 while ((p = *q++) != (char *) 0)
5970 obstack_grow (&multilib_obstack, p, strlen (p));
5972 obstack_1grow (&multilib_obstack, 0);
5973 multilib_select = obstack_finish (&multilib_obstack);
5975 q = multilib_matches_raw;
5976 while ((p = *q++) != (char *) 0)
5977 obstack_grow (&multilib_obstack, p, strlen (p));
5979 obstack_1grow (&multilib_obstack, 0);
5980 multilib_matches = obstack_finish (&multilib_obstack);
5982 q = multilib_exclusions_raw;
5983 while ((p = *q++) != (char *) 0)
5984 obstack_grow (&multilib_obstack, p, strlen (p));
5986 obstack_1grow (&multilib_obstack, 0);
5987 multilib_exclusions = obstack_finish (&multilib_obstack);
5990 for (i = 0; i < ARRAY_SIZE (multilib_defaults_raw); i++)
5993 obstack_1grow (&multilib_obstack, ' ');
5994 obstack_grow (&multilib_obstack,
5995 multilib_defaults_raw[i],
5996 strlen (multilib_defaults_raw[i]));
6000 obstack_1grow (&multilib_obstack, 0);
6001 multilib_defaults = obstack_finish (&multilib_obstack);
6004 /* Set up to remember the pathname of gcc and any options
6005 needed for collect. We use argv[0] instead of programname because
6006 we need the complete pathname. */
6007 obstack_init (&collect_obstack);
6008 obstack_grow (&collect_obstack, "COLLECT_GCC=", sizeof ("COLLECT_GCC=") - 1);
6009 obstack_grow (&collect_obstack, argv[0], strlen (argv[0]) + 1);
6010 putenv (obstack_finish (&collect_obstack));
6012 #ifdef INIT_ENVIRONMENT
6013 /* Set up any other necessary machine specific environment variables. */
6014 putenv (INIT_ENVIRONMENT);
6017 /* Make a table of what switches there are (switches, n_switches).
6018 Make a table of specified input files (infiles, n_infiles).
6019 Decode switches that are handled locally. */
6021 process_command (argc, argv);
6023 /* Initialize the vector of specs to just the default.
6024 This means one element containing 0s, as a terminator. */
6026 compilers = xmalloc (sizeof default_compilers);
6027 memcpy (compilers, default_compilers, sizeof default_compilers);
6028 n_compilers = n_default_compilers;
6030 /* Read specs from a file if there is one. */
6032 machine_suffix = concat (spec_machine, dir_separator_str,
6033 spec_version, dir_separator_str, NULL);
6034 just_machine_suffix = concat (spec_machine, dir_separator_str, NULL);
6036 specs_file = find_a_file (&startfile_prefixes, "specs", R_OK, 0);
6037 /* Read the specs file unless it is a default one. */
6038 if (specs_file != 0 && strcmp (specs_file, "specs"))
6039 read_specs (specs_file, TRUE);
6043 /* We need to check standard_exec_prefix/just_machine_suffix/specs
6044 for any override of as, ld and libraries. */
6045 specs_file = alloca (strlen (standard_exec_prefix)
6046 + strlen (just_machine_suffix) + sizeof ("specs"));
6048 strcpy (specs_file, standard_exec_prefix);
6049 strcat (specs_file, just_machine_suffix);
6050 strcat (specs_file, "specs");
6051 if (access (specs_file, R_OK) == 0)
6052 read_specs (specs_file, TRUE);
6054 /* Process any configure-time defaults specified for the command line
6055 options, via OPTION_DEFAULT_SPECS. */
6056 for (i = 0; i < ARRAY_SIZE (option_default_specs); i++)
6057 do_option_spec (option_default_specs[i].name,
6058 option_default_specs[i].spec);
6060 /* Process DRIVER_SELF_SPECS, adding any new options to the end
6061 of the command line. */
6063 for (i = 0; i < ARRAY_SIZE (driver_self_specs); i++)
6064 do_self_spec (driver_self_specs[i]);
6066 /* If not cross-compiling, look for executables in the standard
6068 if (*cross_compile == '0')
6070 if (*md_exec_prefix)
6072 add_prefix (&exec_prefixes, md_exec_prefix, "GCC",
6073 PREFIX_PRIORITY_LAST, 0, NULL, 0);
6077 /* Process sysroot_suffix_spec. */
6078 if (*sysroot_suffix_spec != 0
6079 && do_spec_2 (sysroot_suffix_spec) == 0)
6081 if (argbuf_index > 1)
6082 error ("spec failure: more than one arg to SYSROOT_SUFFIX_SPEC.");
6083 else if (argbuf_index == 1)
6084 target_sysroot_suffix = xstrdup (argbuf[argbuf_index -1]);
6087 /* Process sysroot_hdrs_suffix_spec. */
6088 if (*sysroot_hdrs_suffix_spec != 0
6089 && do_spec_2 (sysroot_hdrs_suffix_spec) == 0)
6091 if (argbuf_index > 1)
6092 error ("spec failure: more than one arg to SYSROOT_HEADERS_SUFFIX_SPEC.");
6093 else if (argbuf_index == 1)
6094 target_sysroot_hdrs_suffix = xstrdup (argbuf[argbuf_index -1]);
6097 /* Look for startfiles in the standard places. */
6098 if (*startfile_prefix_spec != 0
6099 && do_spec_2 (startfile_prefix_spec) == 0
6100 && do_spec_1 (" ", 0, NULL) == 0)
6103 for (ndx = 0; ndx < argbuf_index; ndx++)
6104 add_sysrooted_prefix (&startfile_prefixes, argbuf[ndx], "BINUTILS",
6105 PREFIX_PRIORITY_LAST, 0, NULL, 1);
6107 /* We should eventually get rid of all these and stick to
6108 startfile_prefix_spec exclusively. */
6109 else if (*cross_compile == '0' || target_system_root)
6111 if (*md_exec_prefix)
6112 add_sysrooted_prefix (&startfile_prefixes, md_exec_prefix, "GCC",
6113 PREFIX_PRIORITY_LAST, 0, NULL, 1);
6115 if (*md_startfile_prefix)
6116 add_sysrooted_prefix (&startfile_prefixes, md_startfile_prefix,
6117 "GCC", PREFIX_PRIORITY_LAST, 0, NULL, 1);
6119 if (*md_startfile_prefix_1)
6120 add_sysrooted_prefix (&startfile_prefixes, md_startfile_prefix_1,
6121 "GCC", PREFIX_PRIORITY_LAST, 0, NULL, 1);
6123 /* If standard_startfile_prefix is relative, base it on
6124 standard_exec_prefix. This lets us move the installed tree
6125 as a unit. If GCC_EXEC_PREFIX is defined, base
6126 standard_startfile_prefix on that as well.
6128 If the prefix is relative, only search it for native compilers;
6129 otherwise we will search a directory containing host libraries. */
6130 if (IS_ABSOLUTE_PATH (standard_startfile_prefix))
6131 add_sysrooted_prefix (&startfile_prefixes,
6132 standard_startfile_prefix, "BINUTILS",
6133 PREFIX_PRIORITY_LAST, 0, NULL, 1);
6134 else if (*cross_compile == '0')
6136 if (gcc_exec_prefix)
6137 add_prefix (&startfile_prefixes,
6138 concat (gcc_exec_prefix, machine_suffix,
6139 standard_startfile_prefix, NULL),
6140 NULL, PREFIX_PRIORITY_LAST, 0, NULL, 1);
6141 add_prefix (&startfile_prefixes,
6142 concat (standard_exec_prefix,
6144 standard_startfile_prefix, NULL),
6145 NULL, PREFIX_PRIORITY_LAST, 0, NULL, 1);
6148 add_sysrooted_prefix (&startfile_prefixes, standard_startfile_prefix_1,
6149 "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL, 1);
6150 add_sysrooted_prefix (&startfile_prefixes, standard_startfile_prefix_2,
6151 "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL, 1);
6152 #if 0 /* Can cause surprises, and one can use -B./ instead. */
6153 add_prefix (&startfile_prefixes, "./", NULL,
6154 PREFIX_PRIORITY_LAST, 1, NULL, 0);
6158 /* Process any user specified specs in the order given on the command
6160 for (uptr = user_specs_head; uptr; uptr = uptr->next)
6162 char *filename = find_a_file (&startfile_prefixes, uptr->filename,
6164 read_specs (filename ? filename : uptr->filename, FALSE);
6167 /* If we have a GCC_EXEC_PREFIX envvar, modify it for cpp's sake. */
6168 if (gcc_exec_prefix)
6169 gcc_exec_prefix = concat (gcc_exec_prefix, spec_machine, dir_separator_str,
6170 spec_version, dir_separator_str, NULL);
6172 /* Now we have the specs.
6173 Set the `valid' bits for switches that match anything in any spec. */
6175 validate_all_switches ();
6177 /* Now that we have the switches and the specs, set
6178 the subdirectory based on the options. */
6179 set_multilib_dir ();
6181 /* Warn about any switches that no pass was interested in. */
6183 for (i = 0; (int) i < n_switches; i++)
6184 if (! switches[i].validated)
6185 error ("unrecognized option `-%s'", switches[i].part1);
6187 /* Obey some of the options. */
6189 if (print_search_dirs)
6191 printf (_("install: %s%s\n"), standard_exec_prefix, machine_suffix);
6192 printf (_("programs: %s\n"), build_search_list (&exec_prefixes, "", 0));
6193 printf (_("libraries: %s\n"), build_search_list (&startfile_prefixes, "", 0));
6197 if (print_file_name)
6199 printf ("%s\n", find_file (print_file_name));
6203 if (print_prog_name)
6205 char *newname = find_a_file (&exec_prefixes, print_prog_name, X_OK, 0);
6206 printf ("%s\n", (newname ? newname : print_prog_name));
6210 if (print_multi_lib)
6212 print_multilib_info ();
6216 if (print_multi_directory)
6218 if (multilib_dir == NULL)
6221 printf ("%s\n", multilib_dir);
6225 if (print_multi_os_directory)
6227 if (multilib_os_dir == NULL)
6230 printf ("%s\n", multilib_os_dir);
6234 if (target_help_flag)
6236 /* Print if any target specific options. */
6238 /* We do not exit here. Instead we have created a fake input file
6239 called 'target-dummy' which needs to be compiled, and we pass this
6240 on to the various sub-processes, along with the --target-help
6244 if (print_help_list)
6250 printf (_("\nFor bug reporting instructions, please see:\n"));
6251 printf ("%s.\n", bug_report_url);
6256 /* We do not exit here. Instead we have created a fake input file
6257 called 'help-dummy' which needs to be compiled, and we pass this
6258 on the various sub-processes, along with the --help switch. */
6266 notice ("Configured with: %s\n", configuration_arguments);
6268 #ifdef THREAD_MODEL_SPEC
6269 /* We could have defined THREAD_MODEL_SPEC to "%*" by default,
6270 but there's no point in doing all this processing just to get
6271 thread_model back. */
6272 obstack_init (&obstack);
6273 do_spec_1 (THREAD_MODEL_SPEC, 0, thread_model);
6274 obstack_1grow (&obstack, '\0');
6275 thrmod = obstack_finish (&obstack);
6277 thrmod = thread_model;
6280 notice ("Thread model: %s\n", thrmod);
6282 /* compiler_version is truncated at the first space when initialized
6283 from version string, so truncate version_string at the first space
6284 before comparing. */
6285 for (n = 0; version_string[n]; n++)
6286 if (version_string[n] == ' ')
6289 if (! strncmp (version_string, compiler_version, n)
6290 && compiler_version[n] == 0)
6291 notice ("gcc version %s\n", version_string);
6293 notice ("gcc driver version %s executing gcc version %s\n",
6294 version_string, compiler_version);
6300 if (n_infiles == added_libraries)
6301 fatal ("no input files");
6303 /* Make a place to record the compiler output file names
6304 that correspond to the input files. */
6307 i += lang_specific_extra_outfiles;
6308 outfiles = xcalloc (i, sizeof (char *));
6310 /* Record which files were specified explicitly as link input. */
6312 explicit_link_files = xcalloc (1, n_infiles);
6316 int lang_n_infiles = 0;
6317 for (i = 0; (int) i < n_infiles; i++)
6319 const char *name = infiles[i].name;
6320 struct compiler *compiler
6321 = lookup_compiler (name, strlen (name), infiles[i].language);
6322 if (compiler == NULL)
6323 error ("%s: linker input file unused because linking not done",
6325 else if (lang_n_infiles > 0 && compiler != input_file_compiler)
6326 fatal ("cannot specify -o with -c or -S and multiple languages");
6330 input_file_compiler = compiler;
6335 for (i = 0; (int) i < (combine_inputs ? 1 : n_infiles); i++)
6337 int this_file_error = 0;
6339 /* Tell do_spec what to substitute for %i. */
6341 input_file_number = i;
6342 set_input (infiles[i].name);
6344 /* Use the same thing in %o, unless cp->spec says otherwise. */
6346 outfiles[i] = input_filename;
6348 /* Figure out which compiler from the file's suffix. */
6350 if (! combine_inputs)
6352 = lookup_compiler (infiles[i].name, input_filename_length,
6353 infiles[i].language);
6355 if (input_file_compiler)
6357 /* Ok, we found an applicable compiler. Run its spec. */
6359 if (input_file_compiler->spec[0] == '#')
6361 error ("%s: %s compiler not installed on this system",
6362 input_filename, &input_file_compiler->spec[1]);
6363 this_file_error = 1;
6367 value = do_spec (input_file_compiler->spec);
6369 this_file_error = 1;
6373 /* If this file's name does not contain a recognized suffix,
6374 record it as explicit linker input. */
6377 explicit_link_files[i] = 1;
6379 /* Clear the delete-on-failure queue, deleting the files in it
6380 if this compilation failed. */
6382 if (this_file_error)
6384 delete_failure_queue ();
6387 /* If this compilation succeeded, don't delete those files later. */
6388 clear_failure_queue ();
6391 /* Reset the output file name to the first input file name, for use
6392 with %b in LINK_SPEC on a target that prefers not to emit a.out
6395 set_input (infiles[0].name);
6397 if (error_count == 0)
6399 /* Make sure INPUT_FILE_NUMBER points to first available open
6401 input_file_number = n_infiles;
6402 if (lang_specific_pre_link ())
6406 /* Determine if there are any linker input files. */
6407 num_linker_inputs = 0;
6408 for (i = 0; (int) i < n_infiles; i++)
6409 if (explicit_link_files[i] || outfiles[i] != NULL)
6410 num_linker_inputs++;
6412 /* Run ld to link all the compiler output files. */
6414 if (num_linker_inputs > 0 && error_count == 0)
6416 int tmp = execution_count;
6418 /* We'll use ld if we can't find collect2. */
6419 if (! strcmp (linker_name_spec, "collect2"))
6421 char *s = find_a_file (&exec_prefixes, "collect2", X_OK, 0);
6423 linker_name_spec = "ld";
6425 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
6427 putenv_from_prefixes (&exec_prefixes, "COMPILER_PATH");
6428 putenv_from_prefixes (&startfile_prefixes, LIBRARY_PATH_ENV);
6430 value = do_spec (link_command_spec);
6433 linker_was_run = (tmp != execution_count);
6436 /* If options said don't run linker,
6437 complain about input files to be given to the linker. */
6439 if (! linker_was_run && error_count == 0)
6440 for (i = 0; (int) i < n_infiles; i++)
6441 if (explicit_link_files[i])
6442 error ("%s: linker input file unused because linking not done",
6445 /* Delete some or all of the temporary files we made. */
6448 delete_failure_queue ();
6449 delete_temp_files ();
6451 if (print_help_list)
6453 printf (("\nFor bug reporting instructions, please see:\n"));
6454 printf ("%s\n", bug_report_url);
6457 return (signal_count != 0 ? 2
6458 : error_count > 0 ? (pass_exit_codes ? greatest_status : 1)
6462 /* Find the proper compilation spec for the file name NAME,
6463 whose length is LENGTH. LANGUAGE is the specified language,
6464 or 0 if this file is to be passed to the linker. */
6466 static struct compiler *
6467 lookup_compiler (const char *name, size_t length, const char *language)
6469 struct compiler *cp;
6471 /* If this was specified by the user to be a linker input, indicate that. */
6472 if (language != 0 && language[0] == '*')
6475 /* Otherwise, look for the language, if one is spec'd. */
6478 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6479 if (cp->suffix[0] == '@' && !strcmp (cp->suffix + 1, language))
6482 error ("language %s not recognized", language);
6486 /* Look for a suffix. */
6487 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6489 if (/* The suffix `-' matches only the file name `-'. */
6490 (!strcmp (cp->suffix, "-") && !strcmp (name, "-"))
6491 || (strlen (cp->suffix) < length
6492 /* See if the suffix matches the end of NAME. */
6493 && !strcmp (cp->suffix,
6494 name + length - strlen (cp->suffix))
6499 #if defined (OS2) ||defined (HAVE_DOS_BASED_FILE_SYSTEM)
6500 /* look again, but case-insensitively this time. */
6502 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6504 if (/* The suffix `-' matches only the file name `-'. */
6505 (!strcmp (cp->suffix, "-") && !strcmp (name, "-"))
6506 || (strlen (cp->suffix) < length
6507 /* See if the suffix matches the end of NAME. */
6508 && ((!strcmp (cp->suffix,
6509 name + length - strlen (cp->suffix))
6510 || !strpbrk (cp->suffix, "ABCDEFGHIJKLMNOPQRSTUVWXYZ"))
6511 && !strcasecmp (cp->suffix,
6512 name + length - strlen (cp->suffix)))
6518 if (cp >= compilers)
6520 if (cp->spec[0] != '@')
6521 /* A non-alias entry: return it. */
6524 /* An alias entry maps a suffix to a language.
6525 Search for the language; pass 0 for NAME and LENGTH
6526 to avoid infinite recursion if language not found. */
6527 return lookup_compiler (NULL, 0, cp->spec + 1);
6533 save_string (const char *s, int len)
6535 char *result = xmalloc (len + 1);
6537 memcpy (result, s, len);
6543 pfatal_with_name (const char *name)
6545 perror_with_name (name);
6546 delete_temp_files ();
6551 perror_with_name (const char *name)
6553 error ("%s: %s", name, xstrerror (errno));
6557 pfatal_pexecute (const char *errmsg_fmt, const char *errmsg_arg)
6561 int save_errno = errno;
6563 /* Space for trailing '\0' is in %s. */
6564 char *msg = xmalloc (strlen (errmsg_fmt) + strlen (errmsg_arg));
6565 sprintf (msg, errmsg_fmt, errmsg_arg);
6571 pfatal_with_name (errmsg_fmt);
6574 /* Output an error message and exit. */
6579 fatal ("internal gcc abort");
6582 /* Output an error message and exit. */
6585 fatal (const char *msgid, ...)
6589 va_start (ap, msgid);
6591 fprintf (stderr, "%s: ", programname);
6592 vfprintf (stderr, _(msgid), ap);
6594 fprintf (stderr, "\n");
6595 delete_temp_files ();
6600 error (const char *msgid, ...)
6604 va_start (ap, msgid);
6605 fprintf (stderr, "%s: ", programname);
6606 vfprintf (stderr, _(msgid), ap);
6609 fprintf (stderr, "\n");
6613 notice (const char *msgid, ...)
6617 va_start (ap, msgid);
6618 vfprintf (stderr, _(msgid), ap);
6623 validate_switches_from_spec (const char *spec)
6625 const char *p = spec;
6628 if (c == '%' && (*p == '{' || *p == '<' || (*p == 'W' && *++p == '{')))
6629 /* We have a switch spec. */
6630 p = validate_switches (p + 1);
6634 validate_all_switches (void)
6636 struct compiler *comp;
6637 struct spec_list *spec;
6639 for (comp = compilers; comp->spec; comp++)
6640 validate_switches_from_spec (comp->spec);
6642 /* Look through the linked list of specs read from the specs file. */
6643 for (spec = specs; spec; spec = spec->next)
6644 validate_switches_from_spec (*spec->ptr_spec);
6646 validate_switches_from_spec (link_command_spec);
6649 /* Look at the switch-name that comes after START
6650 and mark as valid all supplied switches that match it. */
6653 validate_switches (const char *start)
6655 const char *p = start;
6659 bool suffix = false;
6660 bool starred = false;
6662 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
6675 while (ISIDNUM (*p) || *p == '-' || *p == '+' || *p == '='
6676 || *p == ',' || *p == '.' || *p == '@')
6681 starred = true, p++;
6687 /* Mark all matching switches as valid. */
6688 for (i = 0; i < n_switches; i++)
6689 if (!strncmp (switches[i].part1, atom, len)
6690 && (starred || switches[i].part1[len] == 0))
6691 switches[i].validated = 1;
6695 if (*p && (p[-1] == '|' || p[-1] == '&'))
6698 if (*p && p[-1] == ':')
6700 while (*p && *p != ';' && *p != '}')
6705 if (*p == '{' || *p == '<')
6706 p = validate_switches (p+1);
6707 else if (p[0] == 'W' && p[1] == '{')
6708 p = validate_switches (p+2);
6715 if (*p && p[-1] == ';')
6729 static struct mdswitchstr *mdswitches;
6730 static int n_mdswitches;
6732 /* Check whether a particular argument was used. The first time we
6733 canonicalize the switches to keep only the ones we care about. */
6736 used_arg (const char *p, int len)
6741 const char *replace;
6746 static struct mswitchstr *mswitches;
6747 static int n_mswitches;
6752 struct mswitchstr *matches;
6756 /* Break multilib_matches into the component strings of string
6757 and replacement string. */
6758 for (q = multilib_matches; *q != '\0'; q++)
6762 matches = alloca ((sizeof (struct mswitchstr)) * cnt);
6764 q = multilib_matches;
6774 matches[i].len = q - matches[i].str;
6776 matches[i].replace = ++q;
6777 while (*q != ';' && *q != '\0')
6783 matches[i].rep_len = q - matches[i].replace;
6789 /* Now build a list of the replacement string for switches that we care
6790 about. Make sure we allocate at least one entry. This prevents
6791 xmalloc from calling fatal, and prevents us from re-executing this
6794 = xmalloc (sizeof (struct mswitchstr)
6795 * (n_mdswitches + (n_switches ? n_switches : 1)));
6796 for (i = 0; i < n_switches; i++)
6798 int xlen = strlen (switches[i].part1);
6799 for (j = 0; j < cnt; j++)
6800 if (xlen == matches[j].len
6801 && ! strncmp (switches[i].part1, matches[j].str, xlen))
6803 mswitches[n_mswitches].str = matches[j].replace;
6804 mswitches[n_mswitches].len = matches[j].rep_len;
6805 mswitches[n_mswitches].replace = (char *) 0;
6806 mswitches[n_mswitches].rep_len = 0;
6812 /* Add MULTILIB_DEFAULTS switches too, as long as they were not present
6813 on the command line nor any options mutually incompatible with
6815 for (i = 0; i < n_mdswitches; i++)
6819 for (q = multilib_options; *q != '\0'; q++)
6825 while (strncmp (q, mdswitches[i].str, mdswitches[i].len) != 0
6826 || strchr (" /", q[mdswitches[i].len]) == NULL)
6828 while (*q != ' ' && *q != '/' && *q != '\0')
6835 if (*q != ' ' && *q != '\0')
6837 while (*r != ' ' && *r != '\0')
6840 while (*q != ' ' && *q != '/' && *q != '\0')
6843 if (used_arg (r, q - r))
6848 mswitches[n_mswitches].str = mdswitches[i].str;
6849 mswitches[n_mswitches].len = mdswitches[i].len;
6850 mswitches[n_mswitches].replace = (char *) 0;
6851 mswitches[n_mswitches].rep_len = 0;
6864 for (i = 0; i < n_mswitches; i++)
6865 if (len == mswitches[i].len && ! strncmp (p, mswitches[i].str, len))
6872 default_arg (const char *p, int len)
6876 for (i = 0; i < n_mdswitches; i++)
6877 if (len == mdswitches[i].len && ! strncmp (p, mdswitches[i].str, len))
6883 /* Work out the subdirectory to use based on the options. The format of
6884 multilib_select is a list of elements. Each element is a subdirectory
6885 name followed by a list of options followed by a semicolon. The format
6886 of multilib_exclusions is the same, but without the preceding
6887 directory. First gcc will check the exclusions, if none of the options
6888 beginning with an exclamation point are present, and all of the other
6889 options are present, then we will ignore this completely. Passing
6890 that, gcc will consider each multilib_select in turn using the same
6891 rules for matching the options. If a match is found, that subdirectory
6895 set_multilib_dir (void)
6898 unsigned int this_path_len;
6899 const char *this_path, *this_arg;
6900 const char *start, *end;
6902 int ok, ndfltok, first;
6905 start = multilib_defaults;
6906 while (*start == ' ' || *start == '\t')
6908 while (*start != '\0')
6911 while (*start != ' ' && *start != '\t' && *start != '\0')
6913 while (*start == ' ' || *start == '\t')
6921 mdswitches = xmalloc (sizeof (struct mdswitchstr) * n_mdswitches);
6922 for (start = multilib_defaults; *start != '\0'; start = end + 1)
6924 while (*start == ' ' || *start == '\t')
6930 for (end = start + 1;
6931 *end != ' ' && *end != '\t' && *end != '\0'; end++)
6934 obstack_grow (&multilib_obstack, start, end - start);
6935 obstack_1grow (&multilib_obstack, 0);
6936 mdswitches[i].str = obstack_finish (&multilib_obstack);
6937 mdswitches[i++].len = end - start;
6944 p = multilib_exclusions;
6947 /* Ignore newlines. */
6954 /* Check the arguments. */
6968 while (*p != ' ' && *p != ';')
6975 if (*this_arg != '!')
6983 ok = used_arg (this_arg, p - this_arg);
6998 p = multilib_select;
7001 /* Ignore newlines. */
7008 /* Get the initial path. */
7016 this_path_len = p - this_path;
7018 /* Check the arguments. */
7034 while (*p != ' ' && *p != ';')
7041 if (*this_arg != '!')
7049 /* If this is a default argument, we can just ignore it.
7050 This is true even if this_arg begins with '!'. Beginning
7051 with '!' does not mean that this argument is necessarily
7052 inappropriate for this library: it merely means that
7053 there is a more specific library which uses this
7054 argument. If this argument is a default, we need not
7055 consider that more specific library. */
7056 ok = used_arg (this_arg, p - this_arg);
7063 if (default_arg (this_arg, p - this_arg))
7072 if (this_path_len != 1
7073 || this_path[0] != '.')
7075 char *new_multilib_dir = xmalloc (this_path_len + 1);
7078 strncpy (new_multilib_dir, this_path, this_path_len);
7079 new_multilib_dir[this_path_len] = '\0';
7080 q = strchr (new_multilib_dir, ':');
7083 multilib_dir = new_multilib_dir;
7090 const char *q = this_path, *end = this_path + this_path_len;
7092 while (q < end && *q != ':')
7096 char *new_multilib_os_dir = xmalloc (end - q);
7097 memcpy (new_multilib_os_dir, q + 1, end - q - 1);
7098 new_multilib_os_dir[end - q - 1] = '\0';
7099 multilib_os_dir = new_multilib_os_dir;
7107 if (multilib_dir == NULL && multilib_os_dir != NULL
7108 && strcmp (multilib_os_dir, ".") == 0)
7110 free ((char *) multilib_os_dir);
7111 multilib_os_dir = NULL;
7113 else if (multilib_dir != NULL && multilib_os_dir == NULL)
7114 multilib_os_dir = multilib_dir;
7117 /* Print out the multiple library subdirectory selection
7118 information. This prints out a series of lines. Each line looks
7119 like SUBDIRECTORY;@OPTION@OPTION, with as many options as is
7120 required. Only the desired options are printed out, the negative
7121 matches. The options are print without a leading dash. There are
7122 no spaces to make it easy to use the information in the shell.
7123 Each subdirectory is printed only once. This assumes the ordering
7124 generated by the genmultilib script. Also, we leave out ones that match
7128 print_multilib_info (void)
7130 const char *p = multilib_select;
7131 const char *last_path = 0, *this_path;
7133 unsigned int last_path_len = 0;
7138 /* Ignore newlines. */
7145 /* Get the initial path. */
7154 /* When --disable-multilib was used but target defines
7155 MULTILIB_OSDIRNAMES, entries starting with .: are there just
7156 to find multilib_os_dir, so skip them from output. */
7157 if (this_path[0] == '.' && this_path[1] == ':')
7160 /* Check for matches with the multilib_exclusions. We don't bother
7161 with the '!' in either list. If any of the exclusion rules match
7162 all of its options with the select rule, we skip it. */
7164 const char *e = multilib_exclusions;
7165 const char *this_arg;
7170 /* Ignore newlines. */
7177 /* Check the arguments. */
7194 while (*e != ' ' && *e != ';')
7205 int len = e - this_arg;
7212 while (*q != ' ' && *q != ';')
7219 if (! strncmp (arg, this_arg, (len < q - arg) ? q - arg : len) ||
7220 default_arg (this_arg, e - this_arg))
7250 /* If this is a duplicate, skip it. */
7251 skip = (last_path != 0 && (unsigned int) (p - this_path) == last_path_len
7252 && ! strncmp (last_path, this_path, last_path_len));
7254 last_path = this_path;
7255 last_path_len = p - this_path;
7258 /* If this directory requires any default arguments, we can skip
7259 it. We will already have printed a directory identical to
7260 this one which does not require that default argument. */
7278 while (*q != ' ' && *q != ';')
7286 && default_arg (arg, q - arg))
7301 for (p1 = last_path; p1 < p && *p1 != ':'; p1++)
7320 use_arg = *p != '!';
7325 while (*p != ' ' && *p != ';')
7340 /* If there are extra options, print them now. */
7341 if (multilib_extra && *multilib_extra)
7343 int print_at = TRUE;
7346 for (q = multilib_extra; *q != '\0'; q++)
7367 /* if-exists built-in spec function.
7369 Checks to see if the file specified by the absolute pathname in
7370 ARGS exists. Returns that pathname if found.
7372 The usual use for this function is to check for a library file
7373 (whose name has been expanded with %s). */
7376 if_exists_spec_function (int argc, const char **argv)
7378 /* Must have only one argument. */
7379 if (argc == 1 && IS_ABSOLUTE_PATH (argv[0]) && ! access (argv[0], R_OK))
7385 /* if-exists-else built-in spec function.
7387 This is like if-exists, but takes an additional argument which
7388 is returned if the first argument does not exist. */
7391 if_exists_else_spec_function (int argc, const char **argv)
7393 /* Must have exactly two arguments. */
7397 if (IS_ABSOLUTE_PATH (argv[0]) && ! access (argv[0], R_OK))