1 /* Compiler driver program that can handle many languages.
2 Copyright (C) 1987, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
3 1999, 2000, 2001, 2002, 2003, 2004 Free Software Foundation, Inc.
4 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006 Free Software Foundation,
7 This file is part of GCC.
9 GCC is free software; you can redistribute it and/or modify it under
10 the terms of the GNU General Public License as published by the Free
11 Software Foundation; either version 2, or (at your option) any later
14 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
15 WARRANTY; without even the implied warranty of MERCHANTABILITY or
16 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
19 You should have received a copy of the GNU General Public License
20 along with GCC; see the file COPYING. If not, write to the Free
21 Software Foundation, 59 Temple Place - Suite 330, Boston, MA
24 This paragraph is here to try to keep Sun CC from dying.
25 The number of chars here seems crucial!!!! */
27 /* This program is the user interface to the C compiler and possibly to
28 other compilers. It is used because compilation is a complicated procedure
29 which involves running several programs and passing temporary files between
30 them, forwarding the users switches to those programs selectively,
31 and deleting the temporary files at the end.
33 CC recognizes how to compile each input file by suffixes in the file names.
34 Once it knows which kind of compilation to perform, the procedure for
35 compilation is specified by a string called a "spec". */
37 /* A Short Introduction to Adding a Command-Line Option.
39 Before adding a command-line option, consider if it is really
40 necessary. Each additional command-line option adds complexity and
41 is difficult to remove in subsequent versions.
43 In the following, consider adding the command-line argument
46 1. Each command-line option is specified in the specs file. The
47 notation is described below in the comment entitled "The Specs
50 2. In this file, add an entry to "option_map" equating the long
51 `--' argument version and any shorter, single letter version. Read
52 the comments in the declaration of "struct option_map" for an
53 explanation. Do not omit the first `-'.
55 3. Look in the "specs" file to determine which program or option
56 list should be given the argument, e.g., "cc1_options". Add the
57 appropriate syntax for the shorter option version to the
58 corresponding "const char *" entry in this file. Omit the first
59 `-' from the option. For example, use `-bar', rather than `--bar'.
61 4. If the argument takes an argument, e.g., `--baz argument1',
62 modify either DEFAULT_SWITCH_TAKES_ARG or
63 DEFAULT_WORD_SWITCH_TAKES_ARG in this file. Omit the first `-'
66 5. Document the option in this file's display_help(). If the
67 option is passed to a subprogram, modify its corresponding
68 function, e.g., cppinit.c:print_help() or toplev.c:display_help(),
71 6. Compile and test. Make sure that your new specs file is being
72 read. For example, use a debugger to investigate the value of
73 "specs_file" in main(). */
77 #include "coretypes.h"
78 #include "multilib.h" /* before tm.h */
81 #if ! defined( SIGCHLD ) && defined( SIGCLD )
82 # define SIGCHLD SIGCLD
90 #ifdef HAVE_SYS_RESOURCE_H
91 #include <sys/resource.h>
93 #if defined (HAVE_DECL_GETRUSAGE) && !HAVE_DECL_GETRUSAGE
94 extern int getrusage (int, struct rusage *);
97 /* By default there is no special suffix for target executables. */
98 /* FIXME: when autoconf is fixed, remove the host check - dj */
99 #if defined(TARGET_EXECUTABLE_SUFFIX) && defined(HOST_EXECUTABLE_SUFFIX)
100 #define HAVE_TARGET_EXECUTABLE_SUFFIX
103 /* By default there is no special suffix for host executables. */
104 #ifdef HOST_EXECUTABLE_SUFFIX
105 #define HAVE_HOST_EXECUTABLE_SUFFIX
107 #define HOST_EXECUTABLE_SUFFIX ""
110 /* By default, the suffix for target object files is ".o". */
111 #ifdef TARGET_OBJECT_SUFFIX
112 #define HAVE_TARGET_OBJECT_SUFFIX
114 #define TARGET_OBJECT_SUFFIX ".o"
117 static const char dir_separator_str[] = { DIR_SEPARATOR, 0 };
119 /* Most every one is fine with LIBRARY_PATH. For some, it conflicts. */
120 #ifndef LIBRARY_PATH_ENV
121 #define LIBRARY_PATH_ENV "LIBRARY_PATH"
125 #define kill(p,s) raise(s)
128 /* If a stage of compilation returns an exit status >= 1,
129 compilation of that file ceases. */
131 #define MIN_FATAL_STATUS 1
133 /* Flag set by cppspec.c to 1. */
136 /* Flag saying to pass the greatest exit code returned by a sub-process
137 to the calling program. */
138 static int pass_exit_codes;
140 /* Definition of string containing the arguments given to configure. */
141 #include "configargs.h"
143 /* Flag saying to print the directories gcc will search through looking for
144 programs, libraries, etc. */
146 static int print_search_dirs;
148 /* Flag saying to print the full filename of this file
149 as found through our usual search mechanism. */
151 static const char *print_file_name = NULL;
153 /* As print_file_name, but search for executable file. */
155 static const char *print_prog_name = NULL;
157 /* Flag saying to print the relative path we'd use to
158 find libgcc.a given the current compiler flags. */
160 static int print_multi_directory;
162 /* Flag saying to print the relative path we'd use to
163 find OS libraries given the current compiler flags. */
165 static int print_multi_os_directory;
167 /* Flag saying to print the list of subdirectories and
168 compiler flags used to select them in a standard form. */
170 static int print_multi_lib;
172 /* Flag saying to print the command line options understood by gcc and its
175 static int print_help_list;
177 /* Flag indicating whether we should print the command and arguments */
179 static int verbose_flag;
181 /* Flag indicating whether we should ONLY print the command and
182 arguments (like verbose_flag) without executing the command.
183 Displayed arguments are quoted so that the generated command
184 line is suitable for execution. This is intended for use in
185 shell scripts to capture the driver-generated command line. */
186 static int verbose_only_flag;
188 /* Flag indicating to print target specific command line options. */
190 static int target_help_flag;
192 /* Flag indicating whether we should report subprocess execution times
193 (if this is supported by the system - see pexecute.c). */
195 static int report_times;
197 /* Nonzero means place this string before uses of /, so that include
198 and library files can be found in an alternate location. */
200 #ifdef TARGET_SYSTEM_ROOT
201 static const char *target_system_root = TARGET_SYSTEM_ROOT;
203 static const char *target_system_root = 0;
206 /* Nonzero means pass the updated target_system_root to the compiler. */
208 static int target_system_root_changed;
210 /* Nonzero means append this string to target_system_root. */
212 static const char *target_sysroot_suffix = 0;
214 /* Nonzero means append this string to target_system_root for headers. */
216 static const char *target_sysroot_hdrs_suffix = 0;
218 /* Nonzero means write "temp" files in source directory
219 and use the source file's name in them, and don't delete them. */
221 static int save_temps_flag;
223 /* Nonzero means use pipes to communicate between subprocesses.
224 Overridden by either of the above two flags. */
226 static int use_pipes;
228 /* The compiler version. */
230 static const char *compiler_version;
232 /* The target version specified with -V */
234 static const char *const spec_version = DEFAULT_TARGET_VERSION;
236 /* The target machine specified with -b. */
238 static const char *spec_machine = DEFAULT_TARGET_MACHINE;
240 /* Nonzero if cross-compiling.
241 When -b is used, the value comes from the `specs' file. */
244 static const char *cross_compile = "1";
246 static const char *cross_compile = "0";
249 #ifdef MODIFY_TARGET_NAME
251 /* Information on how to alter the target name based on a command-line
252 switch. The only case we support now is simply appending or deleting a
253 string to or from the end of the first part of the configuration name. */
255 static const struct modify_target
257 const char *const sw;
258 const enum add_del {ADD, DELETE} add_del;
259 const char *const str;
261 modify_target[] = MODIFY_TARGET_NAME;
264 /* The number of errors that have occurred; the link phase will not be
265 run if this is nonzero. */
266 static int error_count = 0;
268 /* Greatest exit code of sub-processes that has been encountered up to
270 static int greatest_status = 1;
272 /* This is the obstack which we use to allocate many strings. */
274 static struct obstack obstack;
276 /* This is the obstack to build an environment variable to pass to
277 collect2 that describes all of the relevant switches of what to
278 pass the compiler in building the list of pointers to constructors
281 static struct obstack collect_obstack;
283 /* These structs are used to collect resource usage information for
285 #ifdef HAVE_GETRUSAGE
286 static struct rusage rus, prus;
289 /* Forward declaration for prototypes. */
292 static void init_spec (void);
293 static void store_arg (const char *, int, int);
294 static char *load_specs (const char *);
295 static void read_specs (const char *, int);
296 static void set_spec (const char *, const char *);
297 static struct compiler *lookup_compiler (const char *, size_t, const char *);
298 static char *build_search_list (struct path_prefix *, const char *, int);
299 static void putenv_from_prefixes (struct path_prefix *, const char *);
300 static int access_check (const char *, int);
301 static char *find_a_file (struct path_prefix *, const char *, int, int);
302 static void add_prefix (struct path_prefix *, const char *, const char *,
303 int, int, int *, int);
304 static void add_sysrooted_prefix (struct path_prefix *, const char *,
305 const char *, int, int, int *, int);
306 static void translate_options (int *, const char *const **);
307 static char *skip_whitespace (char *);
308 static void delete_if_ordinary (const char *);
309 static void delete_temp_files (void);
310 static void delete_failure_queue (void);
311 static void clear_failure_queue (void);
312 static int check_live_switch (int, int);
313 static const char *handle_braces (const char *);
314 static inline bool input_suffix_matches (const char *, const char *);
315 static inline bool switch_matches (const char *, const char *, int);
316 static inline void mark_matching_switches (const char *, const char *, int);
317 static inline void process_marked_switches (void);
318 static const char *process_brace_body (const char *, const char *, const char *, int, int);
319 static const struct spec_function *lookup_spec_function (const char *);
320 static const char *eval_spec_function (const char *, const char *);
321 static const char *handle_spec_function (const char *);
322 static char *save_string (const char *, int);
323 static void set_collect_gcc_options (void);
324 static int do_spec_1 (const char *, int, const char *);
325 static int do_spec_2 (const char *);
326 static void do_option_spec (const char *, const char *);
327 static void do_self_spec (const char *);
328 static const char *find_file (const char *);
329 static int is_directory (const char *, const char *, int);
330 static const char *validate_switches (const char *);
331 static void validate_all_switches (void);
332 static inline void validate_switches_from_spec (const char *);
333 static void give_switch (int, int);
334 static int used_arg (const char *, int);
335 static int default_arg (const char *, int);
336 static void set_multilib_dir (void);
337 static void print_multilib_info (void);
338 static void perror_with_name (const char *);
339 static void pfatal_pexecute (const char *, const char *) ATTRIBUTE_NORETURN;
340 static void notice (const char *, ...) ATTRIBUTE_PRINTF_1;
341 static void display_help (void);
342 static void add_preprocessor_option (const char *, int);
343 static void add_assembler_option (const char *, int);
344 static void add_linker_option (const char *, int);
345 static void process_command (int, const char **);
346 static int execute (void);
347 static void alloc_args (void);
348 static void clear_args (void);
349 static void fatal_error (int);
350 #ifdef ENABLE_SHARED_LIBGCC
351 static void init_gcc_specs (struct obstack *, const char *, const char *,
354 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
355 static const char *convert_filename (const char *, int, int);
358 static const char *if_exists_spec_function (int, const char **);
359 static const char *if_exists_else_spec_function (int, const char **);
361 /* The Specs Language
363 Specs are strings containing lines, each of which (if not blank)
364 is made up of a program name, and arguments separated by spaces.
365 The program name must be exact and start from root, since no path
366 is searched and it is unreliable to depend on the current working directory.
367 Redirection of input or output is not supported; the subprograms must
368 accept filenames saying what files to read and write.
370 In addition, the specs can contain %-sequences to substitute variable text
371 or for conditional text. Here is a table of all defined %-sequences.
372 Note that spaces are not generated automatically around the results of
373 expanding these sequences; therefore, you can concatenate them together
374 or with constant text in a single argument.
376 %% substitute one % into the program name or argument.
377 %i substitute the name of the input file being processed.
378 %b substitute the basename of the input file being processed.
379 This is the substring up to (and not including) the last period
380 and not including the directory.
381 %B same as %b, but include the file suffix (text after the last period).
383 substitute a file name that has suffix SUFFIX and is chosen
384 once per compilation, and mark the argument a la %d. To reduce
385 exposure to denial-of-service attacks, the file name is now
386 chosen in a way that is hard to predict even when previously
387 chosen file names are known. For example, `%g.s ... %g.o ... %g.s'
388 might turn into `ccUVUUAU.s ccXYAXZ12.o ccUVUUAU.s'. SUFFIX matches
389 the regexp "[.A-Za-z]*%O"; "%O" is treated exactly as if it
390 had been pre-processed. Previously, %g was simply substituted
391 with a file name chosen once per compilation, without regard
392 to any appended suffix (which was therefore treated just like
393 ordinary text), making such attacks more likely to succeed.
395 like %g, but if -pipe is in effect, expands simply to "-".
397 like %g, but if -pipe is in effect, expands to nothing. (We have both
398 %| and %m to accommodate differences between system assemblers; see
399 the AS_NEEDS_DASH_FOR_PIPED_INPUT target macro.)
401 like %g, but generates a new temporary file name even if %uSUFFIX
404 substitutes the last file name generated with %uSUFFIX, generating a
405 new one if there is no such last file name. In the absence of any
406 %uSUFFIX, this is just like %gSUFFIX, except they don't share
407 the same suffix "space", so `%g.s ... %U.s ... %g.s ... %U.s'
408 would involve the generation of two distinct file names, one
409 for each `%g.s' and another for each `%U.s'. Previously, %U was
410 simply substituted with a file name chosen for the previous %u,
411 without regard to any appended suffix.
413 substitutes the name of the HOST_BIT_BUCKET, if any, and if it is
414 writable, and if save-temps is off; otherwise, substitute the name
415 of a temporary file, just like %u. This temporary file is not
416 meant for communication between processes, but rather as a junk
419 substitutes .SUFFIX for the suffixes of a matched switch's args when
420 it is subsequently output with %*. SUFFIX is terminated by the next
422 %d marks the argument containing or following the %d as a
423 temporary file name, so that that file will be deleted if CC exits
424 successfully. Unlike %g, this contributes no text to the argument.
425 %w marks the argument containing or following the %w as the
426 "output file" of this compilation. This puts the argument
427 into the sequence of arguments that %o will substitute later.
428 %V indicates that this compilation produces no "output file".
430 like %{...} but mark last argument supplied within
431 as a file to be deleted on failure.
432 %o substitutes the names of all the output files, with spaces
433 automatically placed around them. You should write spaces
434 around the %o as well or the results are undefined.
435 %o is for use in the specs for running the linker.
436 Input files whose names have no recognized suffix are not compiled
437 at all, but they are included among the output files, so they will
439 %O substitutes the suffix for object files. Note that this is
440 handled specially when it immediately follows %g, %u, or %U
441 (with or without a suffix argument) because of the need for
442 those to form complete file names. The handling is such that
443 %O is treated exactly as if it had already been substituted,
444 except that %g, %u, and %U do not currently support additional
445 SUFFIX characters following %O as they would following, for
447 %I Substitute any of -iprefix (made from GCC_EXEC_PREFIX), -isysroot
448 (made from TARGET_SYSTEM_ROOT), and -isystem (made from COMPILER_PATH
449 and -B options) as necessary.
450 %s current argument is the name of a library or startup file of some sort.
451 Search for that file in a standard list of directories
452 and substitute the full name found.
453 %eSTR Print STR as an error message. STR is terminated by a newline.
454 Use this when inconsistent options are detected.
455 %nSTR Print STR as a notice. STR is terminated by a newline.
456 %x{OPTION} Accumulate an option for %X.
457 %X Output the accumulated linker options specified by compilations.
458 %Y Output the accumulated assembler options specified by compilations.
459 %Z Output the accumulated preprocessor options specified by compilations.
460 %a process ASM_SPEC as a spec.
461 This allows config.h to specify part of the spec for running as.
462 %A process ASM_FINAL_SPEC as a spec. A capital A is actually
463 used here. This can be used to run a post-processor after the
464 assembler has done its job.
465 %D Dump out a -L option for each directory in startfile_prefixes.
466 If multilib_dir is set, extra entries are generated with it affixed.
467 %l process LINK_SPEC as a spec.
468 %L process LIB_SPEC as a spec.
469 %G process LIBGCC_SPEC as a spec.
470 %M output multilib_dir with directory separators replaced with "_";
471 if multilib_dir is not set or is ".", output "".
472 %S process STARTFILE_SPEC as a spec. A capital S is actually used here.
473 %E process ENDFILE_SPEC as a spec. A capital E is actually used here.
474 %C process CPP_SPEC as a spec.
475 %1 process CC1_SPEC as a spec.
476 %2 process CC1PLUS_SPEC as a spec.
477 %* substitute the variable part of a matched option. (See below.)
478 Note that each comma in the substituted string is replaced by
480 %<S remove all occurrences of -S from the command line.
481 Note - this command is position dependent. % commands in the
482 spec string before this one will see -S, % commands in the
483 spec string after this one will not.
484 %<S* remove all occurrences of all switches beginning with -S from the
487 Call the named function FUNCTION, passing it ARGS. ARGS is
488 first processed as a nested spec string, then split into an
489 argument vector in the usual fashion. The function returns
490 a string which is processed as if it had appeared literally
491 as part of the current spec.
492 %{S} substitutes the -S switch, if that switch was given to CC.
493 If that switch was not specified, this substitutes nothing.
494 Here S is a metasyntactic variable.
495 %{S*} substitutes all the switches specified to CC whose names start
496 with -S. This is used for -o, -I, etc; switches that take
497 arguments. CC considers `-o foo' as being one switch whose
498 name starts with `o'. %{o*} would substitute this text,
499 including the space; thus, two arguments would be generated.
500 %{S*&T*} likewise, but preserve order of S and T options (the order
501 of S and T in the spec is not significant). Can be any number
502 of ampersand-separated variables; for each the wild card is
503 optional. Useful for CPP as %{D*&U*&A*}.
505 %{S:X} substitutes X, if the -S switch was given to CC.
506 %{!S:X} substitutes X, if the -S switch was NOT given to CC.
507 %{S*:X} substitutes X if one or more switches whose names start
508 with -S was given to CC. Normally X is substituted only
509 once, no matter how many such switches appeared. However,
510 if %* appears somewhere in X, then X will be substituted
511 once for each matching switch, with the %* replaced by the
512 part of that switch that matched the '*'.
513 %{.S:X} substitutes X, if processing a file with suffix S.
514 %{!.S:X} substitutes X, if NOT processing a file with suffix S.
516 %{S|T:X} substitutes X if either -S or -T was given to CC. This may be
517 combined with !, ., and * as above binding stronger than the OR.
518 If %* appears in X, all of the alternatives must be starred, and
519 only the first matching alternative is substituted.
520 %{S:X; if S was given to CC, substitutes X;
521 T:Y; else if T was given to CC, substitutes Y;
522 :D} else substitutes D. There can be as many clauses as you need.
523 This may be combined with ., !, |, and * as above.
525 %(Spec) processes a specification defined in a specs file as *Spec:
526 %[Spec] as above, but put __ around -D arguments
528 The conditional text X in a %{S:X} or similar construct may contain
529 other nested % constructs or spaces, or even newlines. They are
530 processed as usual, as described above. Trailing white space in X is
531 ignored. White space may also appear anywhere on the left side of the
532 colon in these constructs, except between . or * and the corresponding
535 The -O, -f, -m, and -W switches are handled specifically in these
536 constructs. If another value of -O or the negated form of a -f, -m, or
537 -W switch is found later in the command line, the earlier switch
538 value is ignored, except with {S*} where S is just one letter; this
539 passes all matching options.
541 The character | at the beginning of the predicate text is used to indicate
542 that a command should be piped to the following command, but only if -pipe
545 Note that it is built into CC which switches take arguments and which
546 do not. You might think it would be useful to generalize this to
547 allow each compiler's spec to say which switches take arguments. But
548 this cannot be done in a consistent fashion. CC cannot even decide
549 which input files have been specified without knowing which switches
550 take arguments, and it must know which input files to compile in order
551 to tell which compilers to run.
553 CC also knows implicitly that arguments starting in `-l' are to be
554 treated as compiler output files, and passed to the linker in their
555 proper position among the other output files. */
557 /* Define the macros used for specs %a, %l, %L, %S, %C, %1. */
559 /* config.h can define ASM_SPEC to provide extra args to the assembler
560 or extra switch-translations. */
565 /* config.h can define ASM_FINAL_SPEC to run a post processor after
566 the assembler has run. */
567 #ifndef ASM_FINAL_SPEC
568 #define ASM_FINAL_SPEC ""
571 /* config.h can define CPP_SPEC to provide extra args to the C preprocessor
572 or extra switch-translations. */
577 /* config.h can define CC1_SPEC to provide extra args to cc1 and cc1plus
578 or extra switch-translations. */
583 /* config.h can define CC1PLUS_SPEC to provide extra args to cc1plus
584 or extra switch-translations. */
586 #define CC1PLUS_SPEC ""
589 /* config.h can define LINK_SPEC to provide extra args to the linker
590 or extra switch-translations. */
595 /* config.h can define LIB_SPEC to override the default libraries. */
597 #define LIB_SPEC "%{!shared:%{g*:-lg} %{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p}}"
600 /* config.h can define LIBGCC_SPEC to override how and when libgcc.a is
603 #if defined(LINK_LIBGCC_SPECIAL) || defined(LINK_LIBGCC_SPECIAL_1)
604 /* Have gcc do the search for libgcc.a. */
605 #define LIBGCC_SPEC "libgcc.a%s"
607 #define LIBGCC_SPEC "-lgcc"
611 /* config.h can define STARTFILE_SPEC to override the default crt0 files. */
612 #ifndef STARTFILE_SPEC
613 #define STARTFILE_SPEC \
614 "%{!shared:%{pg:gcrt0%O%s}%{!pg:%{p:mcrt0%O%s}%{!p:crt0%O%s}}}"
617 /* config.h can define SWITCHES_NEED_SPACES to control which options
618 require spaces between the option and the argument. */
619 #ifndef SWITCHES_NEED_SPACES
620 #define SWITCHES_NEED_SPACES ""
623 /* config.h can define ENDFILE_SPEC to override the default crtn files. */
625 #define ENDFILE_SPEC ""
629 #define LINKER_NAME "collect2"
632 /* Define ASM_DEBUG_SPEC to be a spec suitable for translating '-g'
634 #ifndef ASM_DEBUG_SPEC
635 # if defined(DBX_DEBUGGING_INFO) && defined(DWARF2_DEBUGGING_INFO) \
636 && defined(HAVE_AS_GDWARF2_DEBUG_FLAG) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
637 # define ASM_DEBUG_SPEC \
638 (PREFERRED_DEBUGGING_TYPE == DBX_DEBUG \
639 ? "%{gdwarf-2*:--gdwarf2}%{!gdwarf-2*:%{g*:--gstabs}}" \
640 : "%{gstabs*:--gstabs}%{!gstabs*:%{g*:--gdwarf2}}")
642 # if defined(DBX_DEBUGGING_INFO) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
643 # define ASM_DEBUG_SPEC "%{g*:--gstabs}"
645 # if defined(DWARF2_DEBUGGING_INFO) && defined(HAVE_AS_GDWARF2_DEBUG_FLAG)
646 # define ASM_DEBUG_SPEC "%{g*:--gdwarf2}"
650 #ifndef ASM_DEBUG_SPEC
651 # define ASM_DEBUG_SPEC ""
654 /* Here is the spec for running the linker, after compiling all files. */
656 /* This is overridable by the target in case they need to specify the
657 -lgcc and -lc order specially, yet not require them to override all
658 of LINK_COMMAND_SPEC. */
659 #ifndef LINK_GCC_C_SEQUENCE_SPEC
660 #define LINK_GCC_C_SEQUENCE_SPEC "%G %L %G"
663 #ifndef LINK_PIE_SPEC
665 #define LINK_PIE_SPEC "%{pie:-pie} "
667 #define LINK_PIE_SPEC "%{pie:} "
671 /* -u* was put back because both BSD and SysV seem to support it. */
672 /* %{static:} simply prevents an error message if the target machine
673 doesn't handle -static. */
674 /* We want %{T*} after %{L*} and %D so that it can be used to specify linker
675 scripts which exist in user specified directories, or in standard
677 #ifndef LINK_COMMAND_SPEC
678 #define LINK_COMMAND_SPEC "\
679 %{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:\
680 %(linker) %l " LINK_PIE_SPEC "%X %{o*} %{A} %{d} %{e*} %{m} %{N} %{n} %{r}\
681 %{s} %{t} %{u*} %{x} %{z} %{Z} %{!A:%{!nostdlib:%{!nostartfiles:%S}}}\
682 %{static:} %{L*} %(link_libgcc) %o %{fprofile-arcs|fprofile-generate:-lgcov}\
683 %{!nostdlib:%{!nodefaultlibs:%(link_gcc_c_sequence)}}\
684 %{!A:%{!nostdlib:%{!nostartfiles:%E}}} %{T*} }}}}}}"
687 #ifndef LINK_LIBGCC_SPEC
688 # ifdef LINK_LIBGCC_SPECIAL
689 /* Don't generate -L options for startfile prefix list. */
690 # define LINK_LIBGCC_SPEC ""
692 /* Do generate them. */
693 # define LINK_LIBGCC_SPEC "%D"
697 #ifndef STARTFILE_PREFIX_SPEC
698 # define STARTFILE_PREFIX_SPEC ""
701 #ifndef SYSROOT_SUFFIX_SPEC
702 # define SYSROOT_SUFFIX_SPEC ""
705 #ifndef SYSROOT_HEADERS_SUFFIX_SPEC
706 # define SYSROOT_HEADERS_SUFFIX_SPEC ""
709 static const char *asm_debug;
710 static const char *cpp_spec = CPP_SPEC;
711 static const char *cc1_spec = CC1_SPEC;
712 static const char *cc1plus_spec = CC1PLUS_SPEC;
713 static const char *link_gcc_c_sequence_spec = LINK_GCC_C_SEQUENCE_SPEC;
714 static const char *asm_spec = ASM_SPEC;
715 static const char *asm_final_spec = ASM_FINAL_SPEC;
716 static const char *link_spec = LINK_SPEC;
717 static const char *lib_spec = LIB_SPEC;
718 static const char *libgcc_spec = LIBGCC_SPEC;
719 static const char *endfile_spec = ENDFILE_SPEC;
720 static const char *startfile_spec = STARTFILE_SPEC;
721 static const char *switches_need_spaces = SWITCHES_NEED_SPACES;
722 static const char *linker_name_spec = LINKER_NAME;
723 static const char *link_command_spec = LINK_COMMAND_SPEC;
724 static const char *link_libgcc_spec = LINK_LIBGCC_SPEC;
725 static const char *startfile_prefix_spec = STARTFILE_PREFIX_SPEC;
726 static const char *sysroot_suffix_spec = SYSROOT_SUFFIX_SPEC;
727 static const char *sysroot_hdrs_suffix_spec = SYSROOT_HEADERS_SUFFIX_SPEC;
729 /* Standard options to cpp, cc1, and as, to reduce duplication in specs.
730 There should be no need to override these in target dependent files,
731 but we need to copy them to the specs file so that newer versions
732 of the GCC driver can correctly drive older tool chains with the
733 appropriate -B options. */
735 /* When cpplib handles traditional preprocessing, get rid of this, and
736 call cc1 (or cc1obj in objc/lang-specs.h) from the main specs so
737 that we default the front end language better. */
738 static const char *trad_capable_cpp =
739 "cc1 -E %{traditional|ftraditional|traditional-cpp:-traditional-cpp}";
741 /* We don't wrap .d files in %W{} since a missing .d file, and
742 therefore no dependency entry, confuses make into thinking a .o
743 file that happens to exist is up-to-date. */
744 static const char *cpp_unique_options =
745 "%{C|CC:%{!E:%eGCC does not support -C or -CC without -E}}\
746 %{!Q:-quiet} %{nostdinc*} %{C} %{CC} %{v} %{I*} %{P} %I\
747 %{MD:-MD %{!o:%b.d}%{o*:%.d%*}}\
748 %{MMD:-MMD %{!o:%b.d}%{o*:%.d%*}}\
749 %{M} %{MM} %{MF*} %{MG} %{MP} %{MQ*} %{MT*}\
750 %{!E:%{!M:%{!MM:%{MD|MMD:%{o*:-MQ %*}}}}}\
751 %{remap} %{g3:-dD} %{H} %C %{D*&U*&A*} %{i*} %Z %i\
754 /* This contains cpp options which are common with cc1_options and are passed
755 only when preprocessing only to avoid duplication. We pass the cc1 spec
756 options to the preprocessor so that it the cc1 spec may manipulate
757 options used to set target flags. Those special target flags settings may
758 in turn cause preprocessor symbols to be defined specially. */
759 static const char *cpp_options =
760 "%(cpp_unique_options) %1 %{m*} %{std*&ansi&trigraphs} %{W*&pedantic*} %{w}\
761 %{f*} %{g*:%{!g0:%{!fno-working-directory:-fworking-directory}}} %{O*}\
764 /* This contains cpp options which are not passed when the preprocessor
765 output will be used by another program. */
766 static const char *cpp_debug_options = "%{d*}";
768 /* NB: This is shared amongst all front-ends. */
769 static const char *cc1_options =
770 "%{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\
771 %1 %{!Q:-quiet} -dumpbase %B %{d*} %{m*} %{a*}\
772 %{c|S:%{o*:-auxbase-strip %*}%{!o*:-auxbase %b}}%{!c:%{!S:-auxbase %b}}\
773 %{g*} %{O*} %{W*&pedantic*} %{w} %{std*&ansi&trigraphs}\
774 %{v:-version} %{pg:-p} %{p} %{f*} %{undef}\
775 %{Qn:-fno-ident} %{--help:--help}\
776 %{--target-help:--target-help}\
777 %{!fsyntax-only:%{S:%W{o*}%{!o*:-o %b.s}}}\
778 %{fsyntax-only:-o %j} %{-param*}";
780 static const char *asm_options =
781 "%a %Y %{c:%W{o*}%{!o*:-o %w%b%O}}%{!c:-o %d%w%u%O}";
783 static const char *invoke_as =
784 #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT
785 "%{!S:-o %|.s |\n as %(asm_options) %|.s %A }";
787 "%{!S:-o %|.s |\n as %(asm_options) %m.s %A }";
790 /* Some compilers have limits on line lengths, and the multilib_select
791 and/or multilib_matches strings can be very long, so we build them at
793 static struct obstack multilib_obstack;
794 static const char *multilib_select;
795 static const char *multilib_matches;
796 static const char *multilib_defaults;
797 static const char *multilib_exclusions;
799 /* Check whether a particular argument is a default argument. */
801 #ifndef MULTILIB_DEFAULTS
802 #define MULTILIB_DEFAULTS { "" }
805 static const char *const multilib_defaults_raw[] = MULTILIB_DEFAULTS;
807 #ifndef DRIVER_SELF_SPECS
808 #define DRIVER_SELF_SPECS ""
811 static const char *const driver_self_specs[] = { DRIVER_SELF_SPECS };
813 #ifndef OPTION_DEFAULT_SPECS
814 #define OPTION_DEFAULT_SPECS { "", "" }
823 static const struct default_spec
824 option_default_specs[] = { OPTION_DEFAULT_SPECS };
828 struct user_specs *next;
829 const char *filename;
832 static struct user_specs *user_specs_head, *user_specs_tail;
834 #ifndef SWITCH_TAKES_ARG
835 #define SWITCH_TAKES_ARG(CHAR) DEFAULT_SWITCH_TAKES_ARG(CHAR)
838 #ifndef WORD_SWITCH_TAKES_ARG
839 #define WORD_SWITCH_TAKES_ARG(STR) DEFAULT_WORD_SWITCH_TAKES_ARG (STR)
842 #ifdef HAVE_TARGET_EXECUTABLE_SUFFIX
843 /* This defines which switches stop a full compilation. */
844 #define DEFAULT_SWITCH_CURTAILS_COMPILATION(CHAR) \
845 ((CHAR) == 'c' || (CHAR) == 'S')
847 #ifndef SWITCH_CURTAILS_COMPILATION
848 #define SWITCH_CURTAILS_COMPILATION(CHAR) \
849 DEFAULT_SWITCH_CURTAILS_COMPILATION(CHAR)
853 /* Record the mapping from file suffixes for compilation specs. */
857 const char *suffix; /* Use this compiler for input files
858 whose names end in this suffix. */
860 const char *spec; /* To use this compiler, run this spec. */
862 const char *cpp_spec; /* If non-NULL, substitute this spec
863 for `%C', rather than the usual
867 /* Pointer to a vector of `struct compiler' that gives the spec for
868 compiling a file, based on its suffix.
869 A file that does not end in any of these suffixes will be passed
870 unchanged to the loader and nothing else will be done to it.
872 An entry containing two 0s is used to terminate the vector.
874 If multiple entries match a file, the last matching one is used. */
876 static struct compiler *compilers;
878 /* Number of entries in `compilers', not counting the null terminator. */
880 static int n_compilers;
882 /* The default list of file name suffixes and their compilation specs. */
884 static const struct compiler default_compilers[] =
886 /* Add lists of suffixes of known languages here. If those languages
887 were not present when we built the driver, we will hit these copies
888 and be given a more meaningful error than "file not used since
889 linking is not done". */
890 {".m", "#Objective-C", 0}, {".mi", "#Objective-C", 0},
891 {".cc", "#C++", 0}, {".cxx", "#C++", 0}, {".cpp", "#C++", 0},
892 {".cp", "#C++", 0}, {".c++", "#C++", 0}, {".C", "#C++", 0},
893 {".CPP", "#C++", 0}, {".ii", "#C++", 0},
894 {".ads", "#Ada", 0}, {".adb", "#Ada", 0},
895 {".f", "#Fortran", 0}, {".for", "#Fortran", 0}, {".fpp", "#Fortran", 0},
896 {".F", "#Fortran", 0}, {".FOR", "#Fortran", 0}, {".FPP", "#Fortran", 0},
897 {".r", "#Ratfor", 0},
898 {".p", "#Pascal", 0}, {".pas", "#Pascal", 0},
899 {".java", "#Java", 0}, {".class", "#Java", 0},
900 {".zip", "#Java", 0}, {".jar", "#Java", 0},
901 /* Next come the entries for C. */
904 /* cc1 has an integrated ISO C preprocessor. We should invoke the
905 external preprocessor if -save-temps is given. */
906 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\
908 %{traditional|ftraditional:\
909 %eGNU C no longer supports -traditional without -E}\
910 %{save-temps|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
911 %(cpp_options) -o %{save-temps:%b.i} %{!save-temps:%g.i} \n\
912 cc1 -fpreprocessed %{save-temps:%b.i} %{!save-temps:%g.i} \
914 %{!save-temps:%{!traditional-cpp:%{!no-integrated-cpp:\
915 cc1 %(cpp_unique_options) %(cc1_options)}}}\
916 %{!fsyntax-only:%(invoke_as)}}}}", 0},
918 "%{!E:%e-E or -x required when input is from standard input}\
919 %(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)", 0},
920 {".h", "@c-header", 0},
922 /* cc1 has an integrated ISO C preprocessor. We should invoke the
923 external preprocessor if -save-temps is given. */
924 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\
926 %{save-temps|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
927 %(cpp_options) -o %{save-temps:%b.i} %{!save-temps:%g.i} \n\
928 cc1 -fpreprocessed %{save-temps:%b.i} %{!save-temps:%g.i} \
930 -o %g.s %{!o*:--output-pch=%i.gch}\
931 %W{o*:--output-pch=%*}%V}\
932 %{!save-temps:%{!traditional-cpp:%{!no-integrated-cpp:\
933 cc1 %(cpp_unique_options) %(cc1_options)\
934 -o %g.s %{!o*:--output-pch=%i.gch}\
935 %W{o*:--output-pch=%*}%V}}}}}}", 0},
936 {".i", "@cpp-output", 0},
938 "%{!M:%{!MM:%{!E:cc1 -fpreprocessed %i %(cc1_options) %{!fsyntax-only:%(invoke_as)}}}}", 0},
939 {".s", "@assembler", 0},
941 "%{!M:%{!MM:%{!E:%{!S:as %(asm_debug) %(asm_options) %i %A }}}}", 0},
942 {".S", "@assembler-with-cpp", 0},
943 {"@assembler-with-cpp",
944 #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT
945 "%(trad_capable_cpp) -lang-asm %(cpp_options)\
946 %{E|M|MM:%(cpp_debug_options)}\
947 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\
948 as %(asm_debug) %(asm_options) %|.s %A }}}}"
950 "%(trad_capable_cpp) -lang-asm %(cpp_options)\
951 %{E|M|MM:%(cpp_debug_options)}\
952 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\
953 as %(asm_debug) %(asm_options) %m.s %A }}}}"
958 /* Mark end of table. */
962 /* Number of elements in default_compilers, not counting the terminator. */
964 static const int n_default_compilers = ARRAY_SIZE (default_compilers) - 1;
966 /* A vector of options to give to the linker.
967 These options are accumulated by %x,
968 and substituted into the linker command with %X. */
969 static int n_linker_options;
970 static char **linker_options;
972 /* A vector of options to give to the assembler.
973 These options are accumulated by -Wa,
974 and substituted into the assembler command with %Y. */
975 static int n_assembler_options;
976 static char **assembler_options;
978 /* A vector of options to give to the preprocessor.
979 These options are accumulated by -Wp,
980 and substituted into the preprocessor command with %Z. */
981 static int n_preprocessor_options;
982 static char **preprocessor_options;
984 /* Define how to map long options into short ones. */
986 /* This structure describes one mapping. */
989 /* The long option's name. */
990 const char *const name;
991 /* The equivalent short option. */
992 const char *const equivalent;
993 /* Argument info. A string of flag chars; NULL equals no options.
994 a => argument required.
995 o => argument optional.
996 j => join argument to equivalent, making one word.
997 * => require other text after NAME as an argument. */
998 const char *const arg_info;
1001 /* This is the table of mappings. Mappings are tried sequentially
1002 for each option encountered; the first one that matches, wins. */
1004 static const struct option_map option_map[] =
1006 {"--all-warnings", "-Wall", 0},
1007 {"--ansi", "-ansi", 0},
1008 {"--assemble", "-S", 0},
1009 {"--assert", "-A", "a"},
1010 {"--classpath", "-fclasspath=", "aj"},
1011 {"--bootclasspath", "-fbootclasspath=", "aj"},
1012 {"--CLASSPATH", "-fclasspath=", "aj"},
1013 {"--comments", "-C", 0},
1014 {"--comments-in-macros", "-CC", 0},
1015 {"--compile", "-c", 0},
1016 {"--debug", "-g", "oj"},
1017 {"--define-macro", "-D", "aj"},
1018 {"--dependencies", "-M", 0},
1019 {"--dump", "-d", "a"},
1020 {"--dumpbase", "-dumpbase", "a"},
1021 {"--entry", "-e", 0},
1022 {"--extra-warnings", "-W", 0},
1023 {"--for-assembler", "-Wa", "a"},
1024 {"--for-linker", "-Xlinker", "a"},
1025 {"--force-link", "-u", "a"},
1026 {"--imacros", "-imacros", "a"},
1027 {"--include", "-include", "a"},
1028 {"--include-barrier", "-I-", 0},
1029 {"--include-directory", "-I", "aj"},
1030 {"--include-directory-after", "-idirafter", "a"},
1031 {"--include-prefix", "-iprefix", "a"},
1032 {"--include-with-prefix", "-iwithprefix", "a"},
1033 {"--include-with-prefix-before", "-iwithprefixbefore", "a"},
1034 {"--include-with-prefix-after", "-iwithprefix", "a"},
1035 {"--language", "-x", "a"},
1036 {"--library-directory", "-L", "a"},
1037 {"--machine", "-m", "aj"},
1038 {"--machine-", "-m", "*j"},
1039 {"--no-integrated-cpp", "-no-integrated-cpp", 0},
1040 {"--no-line-commands", "-P", 0},
1041 {"--no-precompiled-includes", "-noprecomp", 0},
1042 {"--no-standard-includes", "-nostdinc", 0},
1043 {"--no-standard-libraries", "-nostdlib", 0},
1044 {"--no-warnings", "-w", 0},
1045 {"--optimize", "-O", "oj"},
1046 {"--output", "-o", "a"},
1047 {"--output-class-directory", "-foutput-class-dir=", "ja"},
1048 {"--param", "--param", "a"},
1049 {"--pedantic", "-pedantic", 0},
1050 {"--pedantic-errors", "-pedantic-errors", 0},
1051 {"--pie", "-pie", 0},
1052 {"--pipe", "-pipe", 0},
1053 {"--prefix", "-B", "a"},
1054 {"--preprocess", "-E", 0},
1055 {"--print-search-dirs", "-print-search-dirs", 0},
1056 {"--print-file-name", "-print-file-name=", "aj"},
1057 {"--print-libgcc-file-name", "-print-libgcc-file-name", 0},
1058 {"--print-missing-file-dependencies", "-MG", 0},
1059 {"--print-multi-lib", "-print-multi-lib", 0},
1060 {"--print-multi-directory", "-print-multi-directory", 0},
1061 {"--print-multi-os-directory", "-print-multi-os-directory", 0},
1062 {"--print-prog-name", "-print-prog-name=", "aj"},
1063 {"--profile", "-p", 0},
1064 {"--profile-blocks", "-a", 0},
1065 {"--quiet", "-q", 0},
1066 {"--resource", "-fcompile-resource=", "aj"},
1067 {"--save-temps", "-save-temps", 0},
1068 {"--shared", "-shared", 0},
1069 {"--silent", "-q", 0},
1070 {"--specs", "-specs=", "aj"},
1071 {"--static", "-static", 0},
1072 {"--std", "-std=", "aj"},
1073 {"--symbolic", "-symbolic", 0},
1074 {"--time", "-time", 0},
1075 {"--trace-includes", "-H", 0},
1076 {"--traditional", "-traditional", 0},
1077 {"--traditional-cpp", "-traditional-cpp", 0},
1078 {"--trigraphs", "-trigraphs", 0},
1079 {"--undefine-macro", "-U", "aj"},
1080 {"--user-dependencies", "-MM", 0},
1081 {"--verbose", "-v", 0},
1082 {"--warn-", "-W", "*j"},
1083 {"--write-dependencies", "-MD", 0},
1084 {"--write-user-dependencies", "-MMD", 0},
1089 #ifdef TARGET_OPTION_TRANSLATE_TABLE
1090 static const struct {
1091 const char *const option_found;
1092 const char *const replacements;
1093 } target_option_translations[] =
1095 TARGET_OPTION_TRANSLATE_TABLE,
1100 /* Translate the options described by *ARGCP and *ARGVP.
1101 Make a new vector and store it back in *ARGVP,
1102 and store its length in *ARGVC. */
1105 translate_options (int *argcp, const char *const **argvp)
1109 const char *const *argv = *argvp;
1110 int newvsize = (argc + 2) * 2 * sizeof (const char *);
1111 const char **newv = xmalloc (newvsize);
1115 newv[newindex++] = argv[i++];
1119 #ifdef TARGET_OPTION_TRANSLATE_TABLE
1123 target_option_translations[tott_idx].option_found;
1126 if (strcmp (target_option_translations[tott_idx].option_found,
1133 for (sp = target_option_translations[tott_idx].replacements;
1140 newvsize += spaces * sizeof (const char *);
1141 newv = xrealloc (newv, newvsize);
1143 sp = target_option_translations[tott_idx].replacements;
1152 newv[newindex++] = np;
1153 while (*np != ' ' && *np)
1164 if (target_option_translations[tott_idx].option_found)
1168 /* Translate -- options. */
1169 if (argv[i][0] == '-' && argv[i][1] == '-')
1172 /* Find a mapping that applies to this option. */
1173 for (j = 0; j < ARRAY_SIZE (option_map); j++)
1175 size_t optlen = strlen (option_map[j].name);
1176 size_t arglen = strlen (argv[i]);
1177 size_t complen = arglen > optlen ? optlen : arglen;
1178 const char *arginfo = option_map[j].arg_info;
1183 if (!strncmp (argv[i], option_map[j].name, complen))
1185 const char *arg = 0;
1187 if (arglen < optlen)
1190 for (k = j + 1; k < ARRAY_SIZE (option_map); k++)
1191 if (strlen (option_map[k].name) >= arglen
1192 && !strncmp (argv[i], option_map[k].name, arglen))
1194 error ("ambiguous abbreviation %s", argv[i]);
1198 if (k != ARRAY_SIZE (option_map))
1202 if (arglen > optlen)
1204 /* If the option has an argument, accept that. */
1205 if (argv[i][optlen] == '=')
1206 arg = argv[i] + optlen + 1;
1208 /* If this mapping requires extra text at end of name,
1209 accept that as "argument". */
1210 else if (strchr (arginfo, '*') != 0)
1211 arg = argv[i] + optlen;
1213 /* Otherwise, extra text at end means mismatch.
1214 Try other mappings. */
1219 else if (strchr (arginfo, '*') != 0)
1221 error ("incomplete `%s' option", option_map[j].name);
1225 /* Handle arguments. */
1226 if (strchr (arginfo, 'a') != 0)
1232 error ("missing argument to `%s' option",
1233 option_map[j].name);
1240 else if (strchr (arginfo, '*') != 0)
1242 else if (strchr (arginfo, 'o') == 0)
1245 error ("extraneous argument to `%s' option",
1246 option_map[j].name);
1250 /* Store the translation as one argv elt or as two. */
1251 if (arg != 0 && strchr (arginfo, 'j') != 0)
1252 newv[newindex++] = concat (option_map[j].equivalent, arg,
1256 newv[newindex++] = option_map[j].equivalent;
1257 newv[newindex++] = arg;
1260 newv[newindex++] = option_map[j].equivalent;
1268 /* Handle old-fashioned options--just copy them through,
1269 with their arguments. */
1270 else if (argv[i][0] == '-')
1272 const char *p = argv[i] + 1;
1276 if (SWITCH_TAKES_ARG (c) > (p[1] != 0))
1277 nskip += SWITCH_TAKES_ARG (c) - (p[1] != 0);
1278 else if (WORD_SWITCH_TAKES_ARG (p))
1279 nskip += WORD_SWITCH_TAKES_ARG (p);
1280 else if ((c == 'B' || c == 'b' || c == 'x')
1283 else if (! strcmp (p, "Xlinker"))
1285 else if (! strcmp (p, "Xpreprocessor"))
1287 else if (! strcmp (p, "Xassembler"))
1290 /* Watch out for an option at the end of the command line that
1291 is missing arguments, and avoid skipping past the end of the
1293 if (nskip + i > argc)
1298 newv[newindex++] = argv[i++];
1303 /* Ordinary operands, or +e options. */
1304 newv[newindex++] = argv[i++];
1314 skip_whitespace (char *p)
1318 /* A fully-blank line is a delimiter in the SPEC file and shouldn't
1319 be considered whitespace. */
1320 if (p[0] == '\n' && p[1] == '\n' && p[2] == '\n')
1322 else if (*p == '\n' || *p == ' ' || *p == '\t')
1336 /* Structures to keep track of prefixes to try when looking for files. */
1340 const char *prefix; /* String to prepend to the path. */
1341 struct prefix_list *next; /* Next in linked list. */
1342 int require_machine_suffix; /* Don't use without machine_suffix. */
1343 /* 2 means try both machine_suffix and just_machine_suffix. */
1344 int *used_flag_ptr; /* 1 if a file was found with this prefix. */
1345 int priority; /* Sort key - priority within list. */
1346 int os_multilib; /* 1 if OS multilib scheme should be used,
1347 0 for GCC multilib scheme. */
1352 struct prefix_list *plist; /* List of prefixes to try */
1353 int max_len; /* Max length of a prefix in PLIST */
1354 const char *name; /* Name of this list (used in config stuff) */
1357 /* List of prefixes to try when looking for executables. */
1359 static struct path_prefix exec_prefixes = { 0, 0, "exec" };
1361 /* List of prefixes to try when looking for startup (crt0) files. */
1363 static struct path_prefix startfile_prefixes = { 0, 0, "startfile" };
1365 /* List of prefixes to try when looking for include files. */
1367 static struct path_prefix include_prefixes = { 0, 0, "include" };
1369 /* Suffix to attach to directories searched for commands.
1370 This looks like `MACHINE/VERSION/'. */
1372 static const char *machine_suffix = 0;
1374 /* Suffix to attach to directories searched for commands.
1375 This is just `MACHINE/'. */
1377 static const char *just_machine_suffix = 0;
1379 /* Adjusted value of GCC_EXEC_PREFIX envvar. */
1381 static const char *gcc_exec_prefix;
1383 /* Adjusted value of standard_libexec_prefix. */
1385 static const char *gcc_libexec_prefix;
1387 /* Default prefixes to attach to command names. */
1389 #ifdef CROSS_COMPILE /* Don't use these prefixes for a cross compiler. */
1390 #undef MD_EXEC_PREFIX
1391 #undef MD_STARTFILE_PREFIX
1392 #undef MD_STARTFILE_PREFIX_1
1395 /* If no prefixes defined, use the null string, which will disable them. */
1396 #ifndef MD_EXEC_PREFIX
1397 #define MD_EXEC_PREFIX ""
1399 #ifndef MD_STARTFILE_PREFIX
1400 #define MD_STARTFILE_PREFIX ""
1402 #ifndef MD_STARTFILE_PREFIX_1
1403 #define MD_STARTFILE_PREFIX_1 ""
1406 static const char *const standard_exec_prefix = STANDARD_EXEC_PREFIX;
1407 static const char *const standard_exec_prefix_1 = "/usr/libexec/gcc/";
1408 static const char *const standard_exec_prefix_2 = "/usr/lib/gcc/";
1409 static const char *md_exec_prefix = MD_EXEC_PREFIX;
1411 static const char *md_startfile_prefix = MD_STARTFILE_PREFIX;
1412 static const char *md_startfile_prefix_1 = MD_STARTFILE_PREFIX_1;
1413 static const char *const standard_startfile_prefix = STANDARD_STARTFILE_PREFIX;
1414 static const char *const standard_startfile_prefix_1 = "/lib/";
1415 static const char *const standard_startfile_prefix_2 = "/usr/lib/";
1417 static const char *const tooldir_base_prefix = TOOLDIR_BASE_PREFIX;
1418 static const char *tooldir_prefix;
1420 static const char *const standard_bindir_prefix = STANDARD_BINDIR_PREFIX;
1422 static const char *standard_libexec_prefix = STANDARD_LIBEXEC_PREFIX;
1424 /* Subdirectory to use for locating libraries. Set by
1425 set_multilib_dir based on the compilation options. */
1427 static const char *multilib_dir;
1429 /* Subdirectory to use for locating libraries in OS conventions. Set by
1430 set_multilib_dir based on the compilation options. */
1432 static const char *multilib_os_dir;
1434 /* Structure to keep track of the specs that have been defined so far.
1435 These are accessed using %(specname) or %[specname] in a compiler
1440 /* The following 2 fields must be first */
1441 /* to allow EXTRA_SPECS to be initialized */
1442 const char *name; /* name of the spec. */
1443 const char *ptr; /* available ptr if no static pointer */
1445 /* The following fields are not initialized */
1446 /* by EXTRA_SPECS */
1447 const char **ptr_spec; /* pointer to the spec itself. */
1448 struct spec_list *next; /* Next spec in linked list. */
1449 int name_len; /* length of the name */
1450 int alloc_p; /* whether string was allocated */
1453 #define INIT_STATIC_SPEC(NAME,PTR) \
1454 { NAME, NULL, PTR, (struct spec_list *) 0, sizeof (NAME) - 1, 0 }
1456 /* List of statically defined specs. */
1457 static struct spec_list static_specs[] =
1459 INIT_STATIC_SPEC ("asm", &asm_spec),
1460 INIT_STATIC_SPEC ("asm_debug", &asm_debug),
1461 INIT_STATIC_SPEC ("asm_final", &asm_final_spec),
1462 INIT_STATIC_SPEC ("asm_options", &asm_options),
1463 INIT_STATIC_SPEC ("invoke_as", &invoke_as),
1464 INIT_STATIC_SPEC ("cpp", &cpp_spec),
1465 INIT_STATIC_SPEC ("cpp_options", &cpp_options),
1466 INIT_STATIC_SPEC ("cpp_debug_options", &cpp_debug_options),
1467 INIT_STATIC_SPEC ("cpp_unique_options", &cpp_unique_options),
1468 INIT_STATIC_SPEC ("trad_capable_cpp", &trad_capable_cpp),
1469 INIT_STATIC_SPEC ("cc1", &cc1_spec),
1470 INIT_STATIC_SPEC ("cc1_options", &cc1_options),
1471 INIT_STATIC_SPEC ("cc1plus", &cc1plus_spec),
1472 INIT_STATIC_SPEC ("link_gcc_c_sequence", &link_gcc_c_sequence_spec),
1473 INIT_STATIC_SPEC ("endfile", &endfile_spec),
1474 INIT_STATIC_SPEC ("link", &link_spec),
1475 INIT_STATIC_SPEC ("lib", &lib_spec),
1476 INIT_STATIC_SPEC ("libgcc", &libgcc_spec),
1477 INIT_STATIC_SPEC ("startfile", &startfile_spec),
1478 INIT_STATIC_SPEC ("switches_need_spaces", &switches_need_spaces),
1479 INIT_STATIC_SPEC ("cross_compile", &cross_compile),
1480 INIT_STATIC_SPEC ("version", &compiler_version),
1481 INIT_STATIC_SPEC ("multilib", &multilib_select),
1482 INIT_STATIC_SPEC ("multilib_defaults", &multilib_defaults),
1483 INIT_STATIC_SPEC ("multilib_extra", &multilib_extra),
1484 INIT_STATIC_SPEC ("multilib_matches", &multilib_matches),
1485 INIT_STATIC_SPEC ("multilib_exclusions", &multilib_exclusions),
1486 INIT_STATIC_SPEC ("multilib_options", &multilib_options),
1487 INIT_STATIC_SPEC ("linker", &linker_name_spec),
1488 INIT_STATIC_SPEC ("link_libgcc", &link_libgcc_spec),
1489 INIT_STATIC_SPEC ("md_exec_prefix", &md_exec_prefix),
1490 INIT_STATIC_SPEC ("md_startfile_prefix", &md_startfile_prefix),
1491 INIT_STATIC_SPEC ("md_startfile_prefix_1", &md_startfile_prefix_1),
1492 INIT_STATIC_SPEC ("startfile_prefix_spec", &startfile_prefix_spec),
1493 INIT_STATIC_SPEC ("sysroot_suffix_spec", &sysroot_suffix_spec),
1494 INIT_STATIC_SPEC ("sysroot_hdrs_suffix_spec", &sysroot_hdrs_suffix_spec),
1497 #ifdef EXTRA_SPECS /* additional specs needed */
1498 /* Structure to keep track of just the first two args of a spec_list.
1499 That is all that the EXTRA_SPECS macro gives us. */
1502 const char *const name;
1503 const char *const ptr;
1506 static const struct spec_list_1 extra_specs_1[] = { EXTRA_SPECS };
1507 static struct spec_list *extra_specs = (struct spec_list *) 0;
1510 /* List of dynamically allocates specs that have been defined so far. */
1512 static struct spec_list *specs = (struct spec_list *) 0;
1514 /* List of static spec functions. */
1516 static const struct spec_function static_spec_functions[] =
1518 { "if-exists", if_exists_spec_function },
1519 { "if-exists-else", if_exists_else_spec_function },
1523 static int processing_spec_function;
1525 /* Add appropriate libgcc specs to OBSTACK, taking into account
1526 various permutations of -shared-libgcc, -shared, and such. */
1528 #ifdef ENABLE_SHARED_LIBGCC
1530 init_gcc_specs (struct obstack *obstack, const char *shared_name,
1531 const char *static_name, const char *eh_name)
1535 buf = concat ("%{static|static-libgcc:", static_name, " ", eh_name,
1536 "}%{!static:%{!static-libgcc:",
1537 #ifdef HAVE_LD_AS_NEEDED
1538 "%{!shared-libgcc:", static_name,
1539 " --as-needed ", shared_name, " --no-as-needed}"
1540 "%{shared-libgcc:", shared_name, "%{!shared: ", static_name,
1543 "%{!shared:%{!shared-libgcc:", static_name, " ",
1544 eh_name, "}%{shared-libgcc:", shared_name, " ",
1545 static_name, "}}%{shared:",
1547 "%{shared-libgcc:", shared_name,
1548 "}%{!shared-libgcc:", static_name, "}",
1555 obstack_grow (obstack, buf, strlen (buf));
1558 #endif /* ENABLE_SHARED_LIBGCC */
1560 /* Initialize the specs lookup routines. */
1565 struct spec_list *next = (struct spec_list *) 0;
1566 struct spec_list *sl = (struct spec_list *) 0;
1570 return; /* Already initialized. */
1573 notice ("Using built-in specs.\n");
1576 extra_specs = xcalloc (sizeof (struct spec_list),
1577 ARRAY_SIZE (extra_specs_1));
1579 for (i = ARRAY_SIZE (extra_specs_1) - 1; i >= 0; i--)
1581 sl = &extra_specs[i];
1582 sl->name = extra_specs_1[i].name;
1583 sl->ptr = extra_specs_1[i].ptr;
1585 sl->name_len = strlen (sl->name);
1586 sl->ptr_spec = &sl->ptr;
1591 /* Initialize here, not in definition. The IRIX 6 O32 cc sometimes chokes
1592 on ?: in file-scope variable initializations. */
1593 asm_debug = ASM_DEBUG_SPEC;
1595 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--)
1597 sl = &static_specs[i];
1602 #ifdef ENABLE_SHARED_LIBGCC
1603 /* ??? If neither -shared-libgcc nor --static-libgcc was
1604 seen, then we should be making an educated guess. Some proposed
1605 heuristics for ELF include:
1607 (1) If "-Wl,--export-dynamic", then it's a fair bet that the
1608 program will be doing dynamic loading, which will likely
1609 need the shared libgcc.
1611 (2) If "-ldl", then it's also a fair bet that we're doing
1614 (3) For each ET_DYN we're linking against (either through -lfoo
1615 or /some/path/foo.so), check to see whether it or one of
1616 its dependencies depends on a shared libgcc.
1620 If the runtime is fixed to look for program headers instead
1621 of calling __register_frame_info at all, for each object,
1622 use the shared libgcc if any EH symbol referenced.
1624 If crtstuff is fixed to not invoke __register_frame_info
1625 automatically, for each object, use the shared libgcc if
1626 any non-empty unwind section found.
1628 Doing any of this probably requires invoking an external program to
1629 do the actual object file scanning. */
1631 const char *p = libgcc_spec;
1634 /* Transform the extant libgcc_spec into one that uses the shared libgcc
1635 when given the proper command line arguments. */
1638 if (in_sep && *p == '-' && strncmp (p, "-lgcc", 5) == 0)
1640 init_gcc_specs (&obstack,
1641 #ifdef NO_SHARED_LIBGCC_MULTILIB
1646 #ifdef USE_LIBUNWIND_EXCEPTIONS
1652 #ifdef USE_LIBUNWIND_EXCEPTIONS
1653 # ifdef HAVE_LD_STATIC_DYNAMIC
1654 " %{!static:-Bstatic} -lunwind %{!static:-Bdynamic}"
1664 else if (in_sep && *p == 'l' && strncmp (p, "libgcc.a%s", 10) == 0)
1666 /* Ug. We don't know shared library extensions. Hope that
1667 systems that use this form don't do shared libraries. */
1668 init_gcc_specs (&obstack,
1669 #ifdef NO_SHARED_LIBGCC_MULTILIB
1677 #ifdef USE_LIBUNWIND_EXCEPTIONS
1686 obstack_1grow (&obstack, *p);
1687 in_sep = (*p == ' ');
1692 obstack_1grow (&obstack, '\0');
1693 libgcc_spec = obstack_finish (&obstack);
1696 #ifdef USE_AS_TRADITIONAL_FORMAT
1697 /* Prepend "--traditional-format" to whatever asm_spec we had before. */
1699 static const char tf[] = "--traditional-format ";
1700 obstack_grow (&obstack, tf, sizeof(tf) - 1);
1701 obstack_grow0 (&obstack, asm_spec, strlen (asm_spec));
1702 asm_spec = obstack_finish (&obstack);
1706 /* Prepend LINK_EH_SPEC to whatever link_spec we had before. */
1707 obstack_grow (&obstack, LINK_EH_SPEC, sizeof(LINK_EH_SPEC) - 1);
1708 obstack_grow0 (&obstack, link_spec, strlen (link_spec));
1709 link_spec = obstack_finish (&obstack);
1715 /* Change the value of spec NAME to SPEC. If SPEC is empty, then the spec is
1716 removed; If the spec starts with a + then SPEC is added to the end of the
1720 set_spec (const char *name, const char *spec)
1722 struct spec_list *sl;
1723 const char *old_spec;
1724 int name_len = strlen (name);
1727 /* If this is the first call, initialize the statically allocated specs. */
1730 struct spec_list *next = (struct spec_list *) 0;
1731 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--)
1733 sl = &static_specs[i];
1740 /* See if the spec already exists. */
1741 for (sl = specs; sl; sl = sl->next)
1742 if (name_len == sl->name_len && !strcmp (sl->name, name))
1747 /* Not found - make it. */
1748 sl = xmalloc (sizeof (struct spec_list));
1749 sl->name = xstrdup (name);
1750 sl->name_len = name_len;
1751 sl->ptr_spec = &sl->ptr;
1753 *(sl->ptr_spec) = "";
1758 old_spec = *(sl->ptr_spec);
1759 *(sl->ptr_spec) = ((spec[0] == '+' && ISSPACE ((unsigned char)spec[1]))
1760 ? concat (old_spec, spec + 1, NULL)
1765 notice ("Setting spec %s to '%s'\n\n", name, *(sl->ptr_spec));
1768 /* Free the old spec. */
1769 if (old_spec && sl->alloc_p)
1770 free ((void *) old_spec);
1775 /* Accumulate a command (program name and args), and run it. */
1777 /* Vector of pointers to arguments in the current line of specifications. */
1779 static const char **argbuf;
1781 /* Number of elements allocated in argbuf. */
1783 static int argbuf_length;
1785 /* Number of elements in argbuf currently in use (containing args). */
1787 static int argbuf_index;
1789 /* This is the list of suffixes and codes (%g/%u/%U/%j) and the associated
1790 temp file. If the HOST_BIT_BUCKET is used for %j, no entry is made for
1793 static struct temp_name {
1794 const char *suffix; /* suffix associated with the code. */
1795 int length; /* strlen (suffix). */
1796 int unique; /* Indicates whether %g or %u/%U was used. */
1797 const char *filename; /* associated filename. */
1798 int filename_length; /* strlen (filename). */
1799 struct temp_name *next;
1802 /* Number of commands executed so far. */
1804 static int execution_count;
1806 /* Number of commands that exited with a signal. */
1808 static int signal_count;
1810 /* Name with which this program was invoked. */
1812 static const char *programname;
1814 /* Allocate the argument vector. */
1820 argbuf = xmalloc (argbuf_length * sizeof (const char *));
1823 /* Clear out the vector of arguments (after a command is executed). */
1831 /* Add one argument to the vector at the end.
1832 This is done when a space is seen or at the end of the line.
1833 If DELETE_ALWAYS is nonzero, the arg is a filename
1834 and the file should be deleted eventually.
1835 If DELETE_FAILURE is nonzero, the arg is a filename
1836 and the file should be deleted if this compilation fails. */
1839 store_arg (const char *arg, int delete_always, int delete_failure)
1841 if (argbuf_index + 1 == argbuf_length)
1842 argbuf = xrealloc (argbuf, (argbuf_length *= 2) * sizeof (const char *));
1844 argbuf[argbuf_index++] = arg;
1845 argbuf[argbuf_index] = 0;
1847 if (delete_always || delete_failure)
1848 record_temp_file (arg, delete_always, delete_failure);
1851 /* Load specs from a file name named FILENAME, replacing occurrences of
1852 various different types of line-endings, \r\n, \n\r and just \r, with
1856 load_specs (const char *filename)
1860 struct stat statbuf;
1867 notice ("Reading specs from %s\n", filename);
1869 /* Open and stat the file. */
1870 desc = open (filename, O_RDONLY, 0);
1872 pfatal_with_name (filename);
1873 if (stat (filename, &statbuf) < 0)
1874 pfatal_with_name (filename);
1876 /* Read contents of file into BUFFER. */
1877 buffer = xmalloc ((unsigned) statbuf.st_size + 1);
1878 readlen = read (desc, buffer, (unsigned) statbuf.st_size);
1880 pfatal_with_name (filename);
1881 buffer[readlen] = 0;
1884 specs = xmalloc (readlen + 1);
1886 for (buffer_p = buffer; buffer_p && *buffer_p; buffer_p++)
1892 if (buffer_p > buffer && *(buffer_p - 1) == '\n') /* \n\r */
1894 else if (*(buffer_p + 1) == '\n') /* \r\n */
1908 /* Read compilation specs from a file named FILENAME,
1909 replacing the default ones.
1911 A suffix which starts with `*' is a definition for
1912 one of the machine-specific sub-specs. The "suffix" should be
1913 *asm, *cc1, *cpp, *link, *startfile, etc.
1914 The corresponding spec is stored in asm_spec, etc.,
1915 rather than in the `compilers' vector.
1917 Anything invalid in the file is a fatal error. */
1920 read_specs (const char *filename, int main_p)
1925 buffer = load_specs (filename);
1927 /* Scan BUFFER for specs, putting them in the vector. */
1933 char *in, *out, *p1, *p2, *p3;
1935 /* Advance P in BUFFER to the next nonblank nocomment line. */
1936 p = skip_whitespace (p);
1940 /* Is this a special command that starts with '%'? */
1941 /* Don't allow this for the main specs file, since it would
1942 encourage people to overwrite it. */
1943 if (*p == '%' && !main_p)
1946 while (*p && *p != '\n')
1952 if (!strncmp (p1, "%include", sizeof ("%include") - 1)
1953 && (p1[sizeof "%include" - 1] == ' '
1954 || p1[sizeof "%include" - 1] == '\t'))
1958 p1 += sizeof ("%include");
1959 while (*p1 == ' ' || *p1 == '\t')
1962 if (*p1++ != '<' || p[-2] != '>')
1963 fatal ("specs %%include syntax malformed after %ld characters",
1964 (long) (p1 - buffer + 1));
1967 new_filename = find_a_file (&startfile_prefixes, p1, R_OK, 0);
1968 read_specs (new_filename ? new_filename : p1, FALSE);
1971 else if (!strncmp (p1, "%include_noerr", sizeof "%include_noerr" - 1)
1972 && (p1[sizeof "%include_noerr" - 1] == ' '
1973 || p1[sizeof "%include_noerr" - 1] == '\t'))
1977 p1 += sizeof "%include_noerr";
1978 while (*p1 == ' ' || *p1 == '\t')
1981 if (*p1++ != '<' || p[-2] != '>')
1982 fatal ("specs %%include syntax malformed after %ld characters",
1983 (long) (p1 - buffer + 1));
1986 new_filename = find_a_file (&startfile_prefixes, p1, R_OK, 0);
1988 read_specs (new_filename, FALSE);
1989 else if (verbose_flag)
1990 notice ("could not find specs file %s\n", p1);
1993 else if (!strncmp (p1, "%rename", sizeof "%rename" - 1)
1994 && (p1[sizeof "%rename" - 1] == ' '
1995 || p1[sizeof "%rename" - 1] == '\t'))
1998 struct spec_list *sl;
1999 struct spec_list *newsl;
2001 /* Get original name. */
2002 p1 += sizeof "%rename";
2003 while (*p1 == ' ' || *p1 == '\t')
2006 if (! ISALPHA ((unsigned char) *p1))
2007 fatal ("specs %%rename syntax malformed after %ld characters",
2008 (long) (p1 - buffer));
2011 while (*p2 && !ISSPACE ((unsigned char) *p2))
2014 if (*p2 != ' ' && *p2 != '\t')
2015 fatal ("specs %%rename syntax malformed after %ld characters",
2016 (long) (p2 - buffer));
2020 while (*p2 == ' ' || *p2 == '\t')
2023 if (! ISALPHA ((unsigned char) *p2))
2024 fatal ("specs %%rename syntax malformed after %ld characters",
2025 (long) (p2 - buffer));
2027 /* Get new spec name. */
2029 while (*p3 && !ISSPACE ((unsigned char) *p3))
2033 fatal ("specs %%rename syntax malformed after %ld characters",
2034 (long) (p3 - buffer));
2037 for (sl = specs; sl; sl = sl->next)
2038 if (name_len == sl->name_len && !strcmp (sl->name, p1))
2042 fatal ("specs %s spec was not found to be renamed", p1);
2044 if (strcmp (p1, p2) == 0)
2047 for (newsl = specs; newsl; newsl = newsl->next)
2048 if (strcmp (newsl->name, p2) == 0)
2049 fatal ("%s: attempt to rename spec '%s' to already defined spec '%s'",
2054 notice ("rename spec %s to %s\n", p1, p2);
2056 notice ("spec is '%s'\n\n", *(sl->ptr_spec));
2060 set_spec (p2, *(sl->ptr_spec));
2062 free ((void *) *(sl->ptr_spec));
2064 *(sl->ptr_spec) = "";
2069 fatal ("specs unknown %% command after %ld characters",
2070 (long) (p1 - buffer));
2073 /* Find the colon that should end the suffix. */
2075 while (*p1 && *p1 != ':' && *p1 != '\n')
2078 /* The colon shouldn't be missing. */
2080 fatal ("specs file malformed after %ld characters",
2081 (long) (p1 - buffer));
2083 /* Skip back over trailing whitespace. */
2085 while (p2 > buffer && (p2[-1] == ' ' || p2[-1] == '\t'))
2088 /* Copy the suffix to a string. */
2089 suffix = save_string (p, p2 - p);
2090 /* Find the next line. */
2091 p = skip_whitespace (p1 + 1);
2093 fatal ("specs file malformed after %ld characters",
2094 (long) (p - buffer));
2097 /* Find next blank line or end of string. */
2098 while (*p1 && !(*p1 == '\n' && (p1[1] == '\n' || p1[1] == '\0')))
2101 /* Specs end at the blank line and do not include the newline. */
2102 spec = save_string (p, p1 - p);
2105 /* Delete backslash-newline sequences from the spec. */
2110 if (in[0] == '\\' && in[1] == '\n')
2112 else if (in[0] == '#')
2113 while (*in && *in != '\n')
2121 if (suffix[0] == '*')
2123 if (! strcmp (suffix, "*link_command"))
2124 link_command_spec = spec;
2126 set_spec (suffix + 1, spec);
2130 /* Add this pair to the vector. */
2132 = xrealloc (compilers,
2133 (n_compilers + 2) * sizeof (struct compiler));
2135 compilers[n_compilers].suffix = suffix;
2136 compilers[n_compilers].spec = spec;
2138 memset (&compilers[n_compilers], 0, sizeof compilers[n_compilers]);
2142 link_command_spec = spec;
2145 if (link_command_spec == 0)
2146 fatal ("spec file has no spec for linking");
2149 /* Record the names of temporary files we tell compilers to write,
2150 and delete them at the end of the run. */
2152 /* This is the common prefix we use to make temp file names.
2153 It is chosen once for each run of this program.
2154 It is substituted into a spec by %g or %j.
2155 Thus, all temp file names contain this prefix.
2156 In practice, all temp file names start with this prefix.
2158 This prefix comes from the envvar TMPDIR if it is defined;
2159 otherwise, from the P_tmpdir macro if that is defined;
2160 otherwise, in /usr/tmp or /tmp;
2161 or finally the current directory if all else fails. */
2163 static const char *temp_filename;
2165 /* Length of the prefix. */
2167 static int temp_filename_length;
2169 /* Define the list of temporary files to delete. */
2174 struct temp_file *next;
2177 /* Queue of files to delete on success or failure of compilation. */
2178 static struct temp_file *always_delete_queue;
2179 /* Queue of files to delete on failure of compilation. */
2180 static struct temp_file *failure_delete_queue;
2182 /* Record FILENAME as a file to be deleted automatically.
2183 ALWAYS_DELETE nonzero means delete it if all compilation succeeds;
2184 otherwise delete it in any case.
2185 FAIL_DELETE nonzero means delete it if a compilation step fails;
2186 otherwise delete it in any case. */
2189 record_temp_file (const char *filename, int always_delete, int fail_delete)
2191 char *const name = xstrdup (filename);
2195 struct temp_file *temp;
2196 for (temp = always_delete_queue; temp; temp = temp->next)
2197 if (! strcmp (name, temp->name))
2200 temp = xmalloc (sizeof (struct temp_file));
2201 temp->next = always_delete_queue;
2203 always_delete_queue = temp;
2210 struct temp_file *temp;
2211 for (temp = failure_delete_queue; temp; temp = temp->next)
2212 if (! strcmp (name, temp->name))
2215 temp = xmalloc (sizeof (struct temp_file));
2216 temp->next = failure_delete_queue;
2218 failure_delete_queue = temp;
2224 /* Delete all the temporary files whose names we previously recorded. */
2227 delete_if_ordinary (const char *name)
2233 printf ("Delete %s? (y or n) ", name);
2237 while ((c = getchar ()) != '\n' && c != EOF)
2240 if (i == 'y' || i == 'Y')
2242 if (stat (name, &st) >= 0 && S_ISREG (st.st_mode))
2243 if (unlink (name) < 0)
2245 perror_with_name (name);
2249 delete_temp_files (void)
2251 struct temp_file *temp;
2253 for (temp = always_delete_queue; temp; temp = temp->next)
2254 delete_if_ordinary (temp->name);
2255 always_delete_queue = 0;
2258 /* Delete all the files to be deleted on error. */
2261 delete_failure_queue (void)
2263 struct temp_file *temp;
2265 for (temp = failure_delete_queue; temp; temp = temp->next)
2266 delete_if_ordinary (temp->name);
2270 clear_failure_queue (void)
2272 failure_delete_queue = 0;
2275 /* Build a list of search directories from PATHS.
2276 PREFIX is a string to prepend to the list.
2277 If CHECK_DIR_P is nonzero we ensure the directory exists.
2278 This is used mostly by putenv_from_prefixes so we use `collect_obstack'.
2279 It is also used by the --print-search-dirs flag. */
2282 build_search_list (struct path_prefix *paths, const char *prefix,
2285 int suffix_len = (machine_suffix) ? strlen (machine_suffix) : 0;
2287 = (just_machine_suffix) ? strlen (just_machine_suffix) : 0;
2288 int first_time = TRUE;
2289 struct prefix_list *pprefix;
2291 obstack_grow (&collect_obstack, prefix, strlen (prefix));
2292 obstack_1grow (&collect_obstack, '=');
2294 for (pprefix = paths->plist; pprefix != 0; pprefix = pprefix->next)
2296 int len = strlen (pprefix->prefix);
2300 || is_directory (pprefix->prefix, machine_suffix, 0)))
2303 obstack_1grow (&collect_obstack, PATH_SEPARATOR);
2306 obstack_grow (&collect_obstack, pprefix->prefix, len);
2307 obstack_grow (&collect_obstack, machine_suffix, suffix_len);
2310 if (just_machine_suffix
2311 && pprefix->require_machine_suffix == 2
2313 || is_directory (pprefix->prefix, just_machine_suffix, 0)))
2316 obstack_1grow (&collect_obstack, PATH_SEPARATOR);
2319 obstack_grow (&collect_obstack, pprefix->prefix, len);
2320 obstack_grow (&collect_obstack, just_machine_suffix,
2324 if (! pprefix->require_machine_suffix)
2327 obstack_1grow (&collect_obstack, PATH_SEPARATOR);
2330 obstack_grow (&collect_obstack, pprefix->prefix, len);
2334 obstack_1grow (&collect_obstack, '\0');
2335 return obstack_finish (&collect_obstack);
2338 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
2342 putenv_from_prefixes (struct path_prefix *paths, const char *env_var)
2344 putenv (build_search_list (paths, env_var, 1));
2347 /* Check whether NAME can be accessed in MODE. This is like access,
2348 except that it never considers directories to be executable. */
2351 access_check (const char *name, int mode)
2357 if (stat (name, &st) < 0
2358 || S_ISDIR (st.st_mode))
2362 return access (name, mode);
2365 /* Search for NAME using the prefix list PREFIXES. MODE is passed to
2366 access to check permissions.
2367 Return 0 if not found, otherwise return its name, allocated with malloc. */
2370 find_a_file (struct path_prefix *pprefix, const char *name, int mode,
2374 const char *const file_suffix =
2375 ((mode & X_OK) != 0 ? HOST_EXECUTABLE_SUFFIX : "");
2376 struct prefix_list *pl;
2377 int len = pprefix->max_len + strlen (name) + strlen (file_suffix) + 1;
2378 const char *multilib_name, *multilib_os_name;
2380 #ifdef DEFAULT_ASSEMBLER
2381 if (! strcmp (name, "as") && access (DEFAULT_ASSEMBLER, mode) == 0)
2382 return xstrdup (DEFAULT_ASSEMBLER);
2385 #ifdef DEFAULT_LINKER
2386 if (! strcmp(name, "ld") && access (DEFAULT_LINKER, mode) == 0)
2387 return xstrdup (DEFAULT_LINKER);
2391 len += strlen (machine_suffix);
2393 multilib_name = name;
2394 multilib_os_name = name;
2395 if (multilib && multilib_os_dir)
2397 int len1 = multilib_dir ? strlen (multilib_dir) + 1 : 0;
2398 int len2 = strlen (multilib_os_dir) + 1;
2400 len += len1 > len2 ? len1 : len2;
2402 multilib_name = ACONCAT ((multilib_dir, dir_separator_str, name,
2404 if (strcmp (multilib_os_dir, ".") != 0)
2405 multilib_os_name = ACONCAT ((multilib_os_dir, dir_separator_str, name,
2409 temp = xmalloc (len);
2411 /* Determine the filename to execute (special case for absolute paths). */
2413 if (IS_ABSOLUTE_PATH (name))
2415 if (access (name, mode) == 0)
2417 strcpy (temp, name);
2422 for (pl = pprefix->plist; pl; pl = pl->next)
2424 const char *this_name
2425 = pl->os_multilib ? multilib_os_name : multilib_name;
2429 /* Some systems have a suffix for executable files.
2430 So try appending that first. */
2431 if (file_suffix[0] != 0)
2433 strcpy (temp, pl->prefix);
2434 strcat (temp, machine_suffix);
2435 strcat (temp, multilib_name);
2436 strcat (temp, file_suffix);
2437 if (access_check (temp, mode) == 0)
2439 if (pl->used_flag_ptr != 0)
2440 *pl->used_flag_ptr = 1;
2445 /* Now try just the multilib_name. */
2446 strcpy (temp, pl->prefix);
2447 strcat (temp, machine_suffix);
2448 strcat (temp, multilib_name);
2449 if (access_check (temp, mode) == 0)
2451 if (pl->used_flag_ptr != 0)
2452 *pl->used_flag_ptr = 1;
2457 /* Certain prefixes are tried with just the machine type,
2458 not the version. This is used for finding as, ld, etc. */
2459 if (just_machine_suffix && pl->require_machine_suffix == 2)
2461 /* Some systems have a suffix for executable files.
2462 So try appending that first. */
2463 if (file_suffix[0] != 0)
2465 strcpy (temp, pl->prefix);
2466 strcat (temp, just_machine_suffix);
2467 strcat (temp, multilib_name);
2468 strcat (temp, file_suffix);
2469 if (access_check (temp, mode) == 0)
2471 if (pl->used_flag_ptr != 0)
2472 *pl->used_flag_ptr = 1;
2477 strcpy (temp, pl->prefix);
2478 strcat (temp, just_machine_suffix);
2479 strcat (temp, multilib_name);
2480 if (access_check (temp, mode) == 0)
2482 if (pl->used_flag_ptr != 0)
2483 *pl->used_flag_ptr = 1;
2488 /* Certain prefixes can't be used without the machine suffix
2489 when the machine or version is explicitly specified. */
2490 if (! pl->require_machine_suffix)
2492 /* Some systems have a suffix for executable files.
2493 So try appending that first. */
2494 if (file_suffix[0] != 0)
2496 strcpy (temp, pl->prefix);
2497 strcat (temp, this_name);
2498 strcat (temp, file_suffix);
2499 if (access_check (temp, mode) == 0)
2501 if (pl->used_flag_ptr != 0)
2502 *pl->used_flag_ptr = 1;
2507 strcpy (temp, pl->prefix);
2508 strcat (temp, this_name);
2509 if (access_check (temp, mode) == 0)
2511 if (pl->used_flag_ptr != 0)
2512 *pl->used_flag_ptr = 1;
2522 /* Ranking of prefixes in the sort list. -B prefixes are put before
2525 enum path_prefix_priority
2527 PREFIX_PRIORITY_B_OPT,
2528 PREFIX_PRIORITY_LAST
2531 /* Add an entry for PREFIX in PLIST. The PLIST is kept in ascending
2532 order according to PRIORITY. Within each PRIORITY, new entries are
2535 If WARN is nonzero, we will warn if no file is found
2536 through this prefix. WARN should point to an int
2537 which will be set to 1 if this entry is used.
2539 COMPONENT is the value to be passed to update_path.
2541 REQUIRE_MACHINE_SUFFIX is 1 if this prefix can't be used without
2542 the complete value of machine_suffix.
2543 2 means try both machine_suffix and just_machine_suffix. */
2546 add_prefix (struct path_prefix *pprefix, const char *prefix,
2547 const char *component, /* enum prefix_priority */ int priority,
2548 int require_machine_suffix, int *warn, int os_multilib)
2550 struct prefix_list *pl, **prev;
2553 for (prev = &pprefix->plist;
2554 (*prev) != NULL && (*prev)->priority <= priority;
2555 prev = &(*prev)->next)
2558 /* Keep track of the longest prefix. */
2560 prefix = update_path (prefix, component);
2561 len = strlen (prefix);
2562 if (len > pprefix->max_len)
2563 pprefix->max_len = len;
2565 pl = xmalloc (sizeof (struct prefix_list));
2566 pl->prefix = prefix;
2567 pl->require_machine_suffix = require_machine_suffix;
2568 pl->used_flag_ptr = warn;
2569 pl->priority = priority;
2570 pl->os_multilib = os_multilib;
2574 /* Insert after PREV. */
2579 /* Same as add_prefix, but prepending target_system_root to prefix. */
2581 add_sysrooted_prefix (struct path_prefix *pprefix, const char *prefix,
2582 const char *component,
2583 /* enum prefix_priority */ int priority,
2584 int require_machine_suffix, int *warn, int os_multilib)
2586 if (!IS_ABSOLUTE_PATH (prefix))
2589 if (target_system_root)
2591 if (target_sysroot_suffix)
2592 prefix = concat (target_sysroot_suffix, prefix, NULL);
2593 prefix = concat (target_system_root, prefix, NULL);
2595 /* We have to override this because GCC's notion of sysroot
2596 moves along with GCC. */
2600 add_prefix (pprefix, prefix, component, priority,
2601 require_machine_suffix, warn, os_multilib);
2604 /* Execute the command specified by the arguments on the current line of spec.
2605 When using pipes, this includes several piped-together commands
2606 with `|' between them.
2608 Return 0 if successful, -1 if failed. */
2614 int n_commands; /* # of command. */
2618 const char *prog; /* program name. */
2619 const char **argv; /* vector of args. */
2620 int pid; /* pid of process for this command. */
2623 struct command *commands; /* each command buffer with above info. */
2625 if (processing_spec_function)
2628 /* Count # of piped commands. */
2629 for (n_commands = 1, i = 0; i < argbuf_index; i++)
2630 if (strcmp (argbuf[i], "|") == 0)
2633 /* Get storage for each command. */
2634 commands = alloca (n_commands * sizeof (struct command));
2636 /* Split argbuf into its separate piped processes,
2637 and record info about each one.
2638 Also search for the programs that are to be run. */
2640 commands[0].prog = argbuf[0]; /* first command. */
2641 commands[0].argv = &argbuf[0];
2642 string = find_a_file (&exec_prefixes, commands[0].prog, X_OK, 0);
2645 commands[0].argv[0] = string;
2647 for (n_commands = 1, i = 0; i < argbuf_index; i++)
2648 if (strcmp (argbuf[i], "|") == 0)
2649 { /* each command. */
2650 #if defined (__MSDOS__) || defined (OS2) || defined (VMS)
2651 fatal ("-pipe not supported");
2653 argbuf[i] = 0; /* termination of command args. */
2654 commands[n_commands].prog = argbuf[i + 1];
2655 commands[n_commands].argv = &argbuf[i + 1];
2656 string = find_a_file (&exec_prefixes, commands[n_commands].prog,
2659 commands[n_commands].argv[0] = string;
2663 argbuf[argbuf_index] = 0;
2665 /* If -v, print what we are about to do, and maybe query. */
2669 /* For help listings, put a blank line between sub-processes. */
2670 if (print_help_list)
2671 fputc ('\n', stderr);
2673 /* Print each piped command as a separate line. */
2674 for (i = 0; i < n_commands; i++)
2676 const char *const *j;
2678 if (verbose_only_flag)
2680 for (j = commands[i].argv; *j; j++)
2683 fprintf (stderr, " \"");
2684 for (p = *j; *p; ++p)
2686 if (*p == '"' || *p == '\\' || *p == '$')
2687 fputc ('\\', stderr);
2690 fputc ('"', stderr);
2694 for (j = commands[i].argv; *j; j++)
2695 fprintf (stderr, " %s", *j);
2697 /* Print a pipe symbol after all but the last command. */
2698 if (i + 1 != n_commands)
2699 fprintf (stderr, " |");
2700 fprintf (stderr, "\n");
2703 if (verbose_only_flag != 0)
2705 /* verbose_only_flag should act as if the spec was
2706 executed, so increment execution_count before
2707 returning. This prevents spurious warnings about
2708 unused linker input files, etc. */
2713 notice ("\nGo ahead? (y or n) ");
2717 while (getchar () != '\n')
2720 if (i != 'y' && i != 'Y')
2725 #ifdef ENABLE_VALGRIND_CHECKING
2726 /* Run the each command through valgrind. To simplify prepending the
2727 path to valgrind and the option "-q" (for quiet operation unless
2728 something triggers), we allocate a separate argv array. */
2730 for (i = 0; i < n_commands; i++)
2736 for (argc = 0; commands[i].argv[argc] != NULL; argc++)
2739 argv = alloca ((argc + 3) * sizeof (char *));
2741 argv[0] = VALGRIND_PATH;
2743 for (j = 2; j < argc + 2; j++)
2744 argv[j] = commands[i].argv[j - 2];
2747 commands[i].argv = argv;
2748 commands[i].prog = argv[0];
2752 /* Run each piped subprocess. */
2754 for (i = 0; i < n_commands; i++)
2756 char *errmsg_fmt, *errmsg_arg;
2757 const char *string = commands[i].argv[0];
2759 /* For some bizarre reason, the second argument of execvp() is
2760 char *const *, not const char *const *. */
2761 commands[i].pid = pexecute (string, (char *const *) commands[i].argv,
2762 programname, temp_filename,
2763 &errmsg_fmt, &errmsg_arg,
2764 ((i == 0 ? PEXECUTE_FIRST : 0)
2765 | (i + 1 == n_commands ? PEXECUTE_LAST : 0)
2766 | (string == commands[i].prog
2767 ? PEXECUTE_SEARCH : 0)
2768 | (verbose_flag ? PEXECUTE_VERBOSE : 0)));
2770 if (commands[i].pid == -1)
2771 pfatal_pexecute (errmsg_fmt, errmsg_arg);
2773 if (string != commands[i].prog)
2774 free ((void *) string);
2779 /* Wait for all the subprocesses to finish.
2780 We don't care what order they finish in;
2781 we know that N_COMMANDS waits will get them all.
2782 Ignore subprocesses that we don't know about,
2783 since they can be spawned by the process that exec'ed us. */
2787 #ifdef HAVE_GETRUSAGE
2789 double ut = 0.0, st = 0.0;
2792 for (i = 0; i < n_commands;)
2798 pid = pwait (commands[i].pid, &status, 0);
2802 #ifdef HAVE_GETRUSAGE
2805 /* getrusage returns the total resource usage of all children
2806 up to now. Copy the previous values into prus, get the
2807 current statistics, then take the difference. */
2810 getrusage (RUSAGE_CHILDREN, &rus);
2811 d.tv_sec = rus.ru_utime.tv_sec - prus.ru_utime.tv_sec;
2812 d.tv_usec = rus.ru_utime.tv_usec - prus.ru_utime.tv_usec;
2813 ut = (double) d.tv_sec + (double) d.tv_usec / 1.0e6;
2815 d.tv_sec = rus.ru_stime.tv_sec - prus.ru_stime.tv_sec;
2816 d.tv_usec = rus.ru_stime.tv_usec - prus.ru_stime.tv_usec;
2817 st = (double) d.tv_sec + (double) d.tv_usec / 1.0e6;
2821 for (j = 0; j < n_commands; j++)
2822 if (commands[j].pid == pid)
2825 if (WIFSIGNALED (status))
2828 /* SIGPIPE is a special case. It happens in -pipe mode
2829 when the compiler dies before the preprocessor is
2830 done, or the assembler dies before the compiler is
2831 done. There's generally been an error already, and
2832 this is just fallout. So don't generate another error
2833 unless we would otherwise have succeeded. */
2834 if (WTERMSIG (status) == SIGPIPE
2835 && (signal_count || greatest_status >= MIN_FATAL_STATUS))
2840 Internal error: %s (program %s)\n\
2841 Please submit a full bug report.\n\
2842 See %s for instructions.",
2843 strsignal (WTERMSIG (status)), commands[j].prog,
2848 else if (WIFEXITED (status)
2849 && WEXITSTATUS (status) >= MIN_FATAL_STATUS)
2851 if (WEXITSTATUS (status) > greatest_status)
2852 greatest_status = WEXITSTATUS (status);
2855 #ifdef HAVE_GETRUSAGE
2856 if (report_times && ut + st != 0)
2857 notice ("# %s %.2f %.2f\n", commands[j].prog, ut, st);
2866 /* Find all the switches given to us
2867 and make a vector describing them.
2868 The elements of the vector are strings, one per switch given.
2869 If a switch uses following arguments, then the `part1' field
2870 is the switch itself and the `args' field
2871 is a null-terminated vector containing the following arguments.
2872 The `live_cond' field is:
2874 1 if the switch is true in a conditional spec,
2875 -1 if false (overridden by a later switch)
2876 -2 if this switch should be ignored (used in %<S)
2877 The `validated' field is nonzero if any spec has looked at this switch;
2878 if it remains zero at the end of the run, it must be meaningless. */
2881 #define SWITCH_FALSE -1
2882 #define SWITCH_IGNORE -2
2883 #define SWITCH_LIVE 1
2890 unsigned char validated;
2891 unsigned char ordering;
2894 static struct switchstr *switches;
2896 static int n_switches;
2901 const char *language;
2904 /* Also a vector of input files specified. */
2906 static struct infile *infiles;
2910 /* True if multiple input files are being compiled to a single
2913 static bool combine_inputs;
2915 /* This counts the number of libraries added by lang_specific_driver, so that
2916 we can tell if there were any user supplied any files or libraries. */
2918 static int added_libraries;
2920 /* And a vector of corresponding output files is made up later. */
2922 const char **outfiles;
2924 /* Used to track if none of the -B paths are used. */
2927 /* Gives value to pass as "warn" to add_prefix for standard prefixes. */
2928 static int *warn_std_ptr = 0;
2930 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2932 /* Convert NAME to a new name if it is the standard suffix. DO_EXE
2933 is true if we should look for an executable suffix. DO_OBJ
2934 is true if we should look for an object suffix. */
2937 convert_filename (const char *name, int do_exe ATTRIBUTE_UNUSED,
2938 int do_obj ATTRIBUTE_UNUSED)
2940 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2948 len = strlen (name);
2950 #ifdef HAVE_TARGET_OBJECT_SUFFIX
2951 /* Convert x.o to x.obj if TARGET_OBJECT_SUFFIX is ".obj". */
2952 if (do_obj && len > 2
2953 && name[len - 2] == '.'
2954 && name[len - 1] == 'o')
2956 obstack_grow (&obstack, name, len - 2);
2957 obstack_grow0 (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX));
2958 name = obstack_finish (&obstack);
2962 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2963 /* If there is no filetype, make it the executable suffix (which includes
2964 the "."). But don't get confused if we have just "-o". */
2965 if (! do_exe || TARGET_EXECUTABLE_SUFFIX[0] == 0 || (len == 2 && name[0] == '-'))
2968 for (i = len - 1; i >= 0; i--)
2969 if (IS_DIR_SEPARATOR (name[i]))
2972 for (i++; i < len; i++)
2976 obstack_grow (&obstack, name, len);
2977 obstack_grow0 (&obstack, TARGET_EXECUTABLE_SUFFIX,
2978 strlen (TARGET_EXECUTABLE_SUFFIX));
2979 name = obstack_finish (&obstack);
2986 /* Display the command line switches accepted by gcc. */
2990 printf (_("Usage: %s [options] file...\n"), programname);
2991 fputs (_("Options:\n"), stdout);
2993 fputs (_(" -pass-exit-codes Exit with highest error code from a phase\n"), stdout);
2994 fputs (_(" --help Display this information\n"), stdout);
2995 fputs (_(" --target-help Display target specific command line options\n"), stdout);
2997 fputs (_(" (Use '-v --help' to display command line options of sub-processes)\n"), stdout);
2998 fputs (_(" -dumpspecs Display all of the built in spec strings\n"), stdout);
2999 fputs (_(" -dumpversion Display the version of the compiler\n"), stdout);
3000 fputs (_(" -dumpmachine Display the compiler's target processor\n"), stdout);
3001 fputs (_(" -print-search-dirs Display the directories in the compiler's search path\n"), stdout);
3002 fputs (_(" -print-libgcc-file-name Display the name of the compiler's companion library\n"), stdout);
3003 fputs (_(" -print-file-name=<lib> Display the full path to library <lib>\n"), stdout);
3004 fputs (_(" -print-prog-name=<prog> Display the full path to compiler component <prog>\n"), stdout);
3005 fputs (_(" -print-multi-directory Display the root directory for versions of libgcc\n"), stdout);
3007 -print-multi-lib Display the mapping between command line options and\n\
3008 multiple library search directories\n"), stdout);
3009 fputs (_(" -print-multi-os-directory Display the relative path to OS libraries\n"), stdout);
3010 fputs (_(" -Wa,<options> Pass comma-separated <options> on to the assembler\n"), stdout);
3011 fputs (_(" -Wp,<options> Pass comma-separated <options> on to the preprocessor\n"), stdout);
3012 fputs (_(" -Wl,<options> Pass comma-separated <options> on to the linker\n"), stdout);
3013 fputs (_(" -Xassembler <arg> Pass <arg> on to the assembler\n"), stdout);
3014 fputs (_(" -Xpreprocessor <arg> Pass <arg> on to the preprocessor\n"), stdout);
3015 fputs (_(" -Xlinker <arg> Pass <arg> on to the linker\n"), stdout);
3016 fputs (_(" -save-temps Do not delete intermediate files\n"), stdout);
3017 fputs (_(" -pipe Use pipes rather than intermediate files\n"), stdout);
3018 fputs (_(" -time Time the execution of each subprocess\n"), stdout);
3019 fputs (_(" -specs=<file> Override built-in specs with the contents of <file>\n"), stdout);
3020 fputs (_(" -std=<standard> Assume that the input sources are for <standard>\n"), stdout);
3021 fputs (_(" -B <directory> Add <directory> to the compiler's search paths\n"), stdout);
3022 fputs (_(" -b <machine> Run gcc for target <machine>, if installed\n"), stdout);
3023 fputs (_(" -V <version> Run gcc version number <version>, if installed\n"), stdout);
3024 fputs (_(" -v Display the programs invoked by the compiler\n"), stdout);
3025 fputs (_(" -### Like -v but options quoted and commands not executed\n"), stdout);
3026 fputs (_(" -E Preprocess only; do not compile, assemble or link\n"), stdout);
3027 fputs (_(" -S Compile only; do not assemble or link\n"), stdout);
3028 fputs (_(" -c Compile and assemble, but do not link\n"), stdout);
3029 fputs (_(" -o <file> Place the output into <file>\n"), stdout);
3031 -x <language> Specify the language of the following input files\n\
3032 Permissible languages include: c c++ assembler none\n\
3033 'none' means revert to the default behavior of\n\
3034 guessing the language based on the file's extension\n\
3038 \nOptions starting with -g, -f, -m, -O, -W, or --param are automatically\n\
3039 passed on to the various sub-processes invoked by %s. In order to pass\n\
3040 other options on to these processes the -W<letter> options must be used.\n\
3043 /* The rest of the options are displayed by invocations of the various
3048 add_preprocessor_option (const char *option, int len)
3050 n_preprocessor_options++;
3052 if (! preprocessor_options)
3053 preprocessor_options = xmalloc (n_preprocessor_options * sizeof (char *));
3055 preprocessor_options = xrealloc (preprocessor_options,
3056 n_preprocessor_options * sizeof (char *));
3058 preprocessor_options [n_preprocessor_options - 1] =
3059 save_string (option, len);
3063 add_assembler_option (const char *option, int len)
3065 n_assembler_options++;
3067 if (! assembler_options)
3068 assembler_options = xmalloc (n_assembler_options * sizeof (char *));
3070 assembler_options = xrealloc (assembler_options,
3071 n_assembler_options * sizeof (char *));
3073 assembler_options [n_assembler_options - 1] = save_string (option, len);
3077 add_linker_option (const char *option, int len)
3081 if (! linker_options)
3082 linker_options = xmalloc (n_linker_options * sizeof (char *));
3084 linker_options = xrealloc (linker_options,
3085 n_linker_options * sizeof (char *));
3087 linker_options [n_linker_options - 1] = save_string (option, len);
3090 /* Create the vector `switches' and its contents.
3091 Store its length in `n_switches'. */
3094 process_command (int argc, const char **argv)
3099 const char *spec_lang = 0;
3100 int last_language_n_infiles;
3103 int lang_n_infiles = 0;
3104 #ifdef MODIFY_TARGET_NAME
3105 int is_modify_target_name;
3109 GET_ENVIRONMENT (gcc_exec_prefix, "GCC_EXEC_PREFIX");
3113 added_libraries = 0;
3115 /* Figure compiler version from version string. */
3117 compiler_version = temp1 = xstrdup (version_string);
3119 for (; *temp1; ++temp1)
3128 /* If there is a -V or -b option (or both), process it now, before
3129 trying to interpret the rest of the command line. */
3130 if (argc > 1 && argv[1][0] == '-'
3131 && (argv[1][1] == 'V' || argv[1][1] == 'b'))
3133 const char *new_version = DEFAULT_TARGET_VERSION;
3134 const char *new_machine = DEFAULT_TARGET_MACHINE;
3135 const char *progname = argv[0];
3140 while (argc > 1 && argv[1][0] == '-'
3141 && (argv[1][1] == 'V' || argv[1][1] == 'b'))
3143 char opt = argv[1][1];
3145 if (argv[1][2] != '\0')
3158 fatal ("`-%c' option must have argument", opt);
3165 for (baselen = strlen (progname); baselen > 0; baselen--)
3166 if (IS_DIR_SEPARATOR (progname[baselen-1]))
3168 new_argv0 = xmemdup (progname, baselen,
3169 baselen + concat_length (new_version, new_machine,
3170 "-gcc-", NULL) + 1);
3171 strcpy (new_argv0 + baselen, new_machine);
3172 strcat (new_argv0, "-gcc-");
3173 strcat (new_argv0, new_version);
3175 new_argv = xmemdup (argv, (argc + 1) * sizeof (argv[0]),
3176 (argc + 1) * sizeof (argv[0]));
3177 new_argv[0] = new_argv0;
3179 execvp (new_argv0, new_argv);
3180 fatal ("couldn't run `%s': %s", new_argv0, xstrerror (errno));
3183 /* Set up the default search paths. If there is no GCC_EXEC_PREFIX,
3184 see if we can create it from the pathname specified in argv[0]. */
3186 gcc_libexec_prefix = standard_libexec_prefix;
3188 /* FIXME: make_relative_prefix doesn't yet work for VMS. */
3189 if (!gcc_exec_prefix)
3191 gcc_exec_prefix = make_relative_prefix (argv[0], standard_bindir_prefix,
3192 standard_exec_prefix);
3193 gcc_libexec_prefix = make_relative_prefix (argv[0],
3194 standard_bindir_prefix,
3195 standard_libexec_prefix);
3196 if (gcc_exec_prefix)
3197 putenv (concat ("GCC_EXEC_PREFIX=", gcc_exec_prefix, NULL));
3200 gcc_libexec_prefix = make_relative_prefix (gcc_exec_prefix,
3201 standard_exec_prefix,
3202 standard_libexec_prefix);
3206 if (gcc_exec_prefix)
3208 int len = strlen (gcc_exec_prefix);
3210 if (len > (int) sizeof ("/lib/gcc/") - 1
3211 && (IS_DIR_SEPARATOR (gcc_exec_prefix[len-1])))
3213 temp = gcc_exec_prefix + len - sizeof ("/lib/gcc/") + 1;
3214 if (IS_DIR_SEPARATOR (*temp)
3215 && strncmp (temp + 1, "lib", 3) == 0
3216 && IS_DIR_SEPARATOR (temp[4])
3217 && strncmp (temp + 5, "gcc", 3) == 0)
3218 len -= sizeof ("/lib/gcc/") - 1;
3221 set_std_prefix (gcc_exec_prefix, len);
3222 add_prefix (&exec_prefixes, gcc_libexec_prefix, "GCC",
3223 PREFIX_PRIORITY_LAST, 0, NULL, 0);
3224 add_prefix (&startfile_prefixes, gcc_exec_prefix, "GCC",
3225 PREFIX_PRIORITY_LAST, 0, NULL, 0);
3228 /* COMPILER_PATH and LIBRARY_PATH have values
3229 that are lists of directory names with colons. */
3231 GET_ENVIRONMENT (temp, "COMPILER_PATH");
3234 const char *startp, *endp;
3235 char *nstore = alloca (strlen (temp) + 3);
3237 startp = endp = temp;
3240 if (*endp == PATH_SEPARATOR || *endp == 0)
3242 strncpy (nstore, startp, endp - startp);
3244 strcpy (nstore, concat (".", dir_separator_str, NULL));
3245 else if (!IS_DIR_SEPARATOR (endp[-1]))
3247 nstore[endp - startp] = DIR_SEPARATOR;
3248 nstore[endp - startp + 1] = 0;
3251 nstore[endp - startp] = 0;
3252 add_prefix (&exec_prefixes, nstore, 0,
3253 PREFIX_PRIORITY_LAST, 0, NULL, 0);
3254 add_prefix (&include_prefixes,
3255 concat (nstore, "include", NULL),
3256 0, PREFIX_PRIORITY_LAST, 0, NULL, 0);
3259 endp = startp = endp + 1;
3266 GET_ENVIRONMENT (temp, LIBRARY_PATH_ENV);
3267 if (temp && *cross_compile == '0')
3269 const char *startp, *endp;
3270 char *nstore = alloca (strlen (temp) + 3);
3272 startp = endp = temp;
3275 if (*endp == PATH_SEPARATOR || *endp == 0)
3277 strncpy (nstore, startp, endp - startp);
3279 strcpy (nstore, concat (".", dir_separator_str, NULL));
3280 else if (!IS_DIR_SEPARATOR (endp[-1]))
3282 nstore[endp - startp] = DIR_SEPARATOR;
3283 nstore[endp - startp + 1] = 0;
3286 nstore[endp - startp] = 0;
3287 add_prefix (&startfile_prefixes, nstore, NULL,
3288 PREFIX_PRIORITY_LAST, 0, NULL, 1);
3291 endp = startp = endp + 1;
3298 /* Use LPATH like LIBRARY_PATH (for the CMU build program). */
3299 GET_ENVIRONMENT (temp, "LPATH");
3300 if (temp && *cross_compile == '0')
3302 const char *startp, *endp;
3303 char *nstore = alloca (strlen (temp) + 3);
3305 startp = endp = temp;
3308 if (*endp == PATH_SEPARATOR || *endp == 0)
3310 strncpy (nstore, startp, endp - startp);
3312 strcpy (nstore, concat (".", dir_separator_str, NULL));
3313 else if (!IS_DIR_SEPARATOR (endp[-1]))
3315 nstore[endp - startp] = DIR_SEPARATOR;
3316 nstore[endp - startp + 1] = 0;
3319 nstore[endp - startp] = 0;
3320 add_prefix (&startfile_prefixes, nstore, NULL,
3321 PREFIX_PRIORITY_LAST, 0, NULL, 1);
3324 endp = startp = endp + 1;
3331 /* Convert new-style -- options to old-style. */
3332 translate_options (&argc, (const char *const **) &argv);
3334 /* Do language-specific adjustment/addition of flags. */
3335 lang_specific_driver (&argc, (const char *const **) &argv, &added_libraries);
3337 /* Scan argv twice. Here, the first time, just count how many switches
3338 there will be in their vector, and how many input files in theirs.
3339 Here we also parse the switches that cc itself uses (e.g. -v). */
3341 for (i = 1; i < argc; i++)
3343 if (! strcmp (argv[i], "-dumpspecs"))
3345 struct spec_list *sl;
3347 for (sl = specs; sl; sl = sl->next)
3348 printf ("*%s:\n%s\n\n", sl->name, *(sl->ptr_spec));
3349 if (link_command_spec)
3350 printf ("*link_command:\n%s\n\n", link_command_spec);
3353 else if (! strcmp (argv[i], "-dumpversion"))
3355 printf ("%s\n", spec_version);
3358 else if (! strcmp (argv[i], "-dumpmachine"))
3360 printf ("%s\n", spec_machine);
3363 else if (strcmp (argv[i], "-fversion") == 0)
3365 /* translate_options () has turned --version into -fversion. */
3366 printf (_("%s (GCC) %s\n"), programname, version_string);
3367 printf ("Copyright %s 2006 Free Software Foundation, Inc.\n",
3369 fputs (_("This is free software; see the source for copying conditions. There is NO\n\
3370 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\n"),
3374 else if (strcmp (argv[i], "-fhelp") == 0)
3376 /* translate_options () has turned --help into -fhelp. */
3377 print_help_list = 1;
3379 /* We will be passing a dummy file on to the sub-processes. */
3383 /* CPP driver cannot obtain switch from cc1_options. */
3385 add_preprocessor_option ("--help", 6);
3386 add_assembler_option ("--help", 6);
3387 add_linker_option ("--help", 6);
3389 else if (strcmp (argv[i], "-ftarget-help") == 0)
3391 /* translate_options() has turned --target-help into -ftarget-help. */
3392 target_help_flag = 1;
3394 /* We will be passing a dummy file on to the sub-processes. */
3398 /* CPP driver cannot obtain switch from cc1_options. */
3400 add_preprocessor_option ("--target-help", 13);
3401 add_assembler_option ("--target-help", 13);
3402 add_linker_option ("--target-help", 13);
3404 else if (! strcmp (argv[i], "-pass-exit-codes"))
3406 pass_exit_codes = 1;
3409 else if (! strcmp (argv[i], "-print-search-dirs"))
3410 print_search_dirs = 1;
3411 else if (! strcmp (argv[i], "-print-libgcc-file-name"))
3412 print_file_name = "libgcc.a";
3413 else if (! strncmp (argv[i], "-print-file-name=", 17))
3414 print_file_name = argv[i] + 17;
3415 else if (! strncmp (argv[i], "-print-prog-name=", 17))
3416 print_prog_name = argv[i] + 17;
3417 else if (! strcmp (argv[i], "-print-multi-lib"))
3418 print_multi_lib = 1;
3419 else if (! strcmp (argv[i], "-print-multi-directory"))
3420 print_multi_directory = 1;
3421 else if (! strcmp (argv[i], "-print-multi-os-directory"))
3422 print_multi_os_directory = 1;
3423 else if (! strncmp (argv[i], "-Wa,", 4))
3426 /* Pass the rest of this option to the assembler. */
3428 /* Split the argument at commas. */
3430 for (j = 4; argv[i][j]; j++)
3431 if (argv[i][j] == ',')
3433 add_assembler_option (argv[i] + prev, j - prev);
3437 /* Record the part after the last comma. */
3438 add_assembler_option (argv[i] + prev, j - prev);
3440 else if (! strncmp (argv[i], "-Wp,", 4))
3443 /* Pass the rest of this option to the preprocessor. */
3445 /* Split the argument at commas. */
3447 for (j = 4; argv[i][j]; j++)
3448 if (argv[i][j] == ',')
3450 add_preprocessor_option (argv[i] + prev, j - prev);
3454 /* Record the part after the last comma. */
3455 add_preprocessor_option (argv[i] + prev, j - prev);
3457 else if (argv[i][0] == '+' && argv[i][1] == 'e')
3458 /* The +e options to the C++ front-end. */
3460 else if (strncmp (argv[i], "-Wl,", 4) == 0)
3463 /* Split the argument at commas. */
3464 for (j = 3; argv[i][j]; j++)
3465 n_infiles += (argv[i][j] == ',');
3467 else if (strcmp (argv[i], "-Xlinker") == 0)
3470 fatal ("argument to `-Xlinker' is missing");
3475 else if (strcmp (argv[i], "-Xpreprocessor") == 0)
3478 fatal ("argument to `-Xpreprocessor' is missing");
3480 add_preprocessor_option (argv[i+1], strlen (argv[i+1]));
3482 else if (strcmp (argv[i], "-Xassembler") == 0)
3485 fatal ("argument to `-Xassembler' is missing");
3487 add_assembler_option (argv[i+1], strlen (argv[i+1]));
3489 else if (strcmp (argv[i], "-l") == 0)
3492 fatal ("argument to `-l' is missing");
3497 else if (strncmp (argv[i], "-l", 2) == 0)
3499 else if (strcmp (argv[i], "-save-temps") == 0)
3501 save_temps_flag = 1;
3504 else if (strcmp (argv[i], "-specs") == 0)
3506 struct user_specs *user = xmalloc (sizeof (struct user_specs));
3508 fatal ("argument to `-specs' is missing");
3510 user->next = (struct user_specs *) 0;
3511 user->filename = argv[i];
3512 if (user_specs_tail)
3513 user_specs_tail->next = user;
3515 user_specs_head = user;
3516 user_specs_tail = user;
3518 else if (strncmp (argv[i], "-specs=", 7) == 0)
3520 struct user_specs *user = xmalloc (sizeof (struct user_specs));
3521 if (strlen (argv[i]) == 7)
3522 fatal ("argument to `-specs=' is missing");
3524 user->next = (struct user_specs *) 0;
3525 user->filename = argv[i] + 7;
3526 if (user_specs_tail)
3527 user_specs_tail->next = user;
3529 user_specs_head = user;
3530 user_specs_tail = user;
3532 else if (strcmp (argv[i], "-time") == 0)
3534 else if (strcmp (argv[i], "-pipe") == 0)
3536 /* -pipe has to go into the switches array as well as
3541 else if (strcmp (argv[i], "-###") == 0)
3543 /* This is similar to -v except that there is no execution
3544 of the commands and the echoed arguments are quoted. It
3545 is intended for use in shell scripts to capture the
3546 driver-generated command line. */
3547 verbose_only_flag++;
3550 else if (argv[i][0] == '-' && argv[i][1] != 0)
3552 const char *p = &argv[i][1];
3559 fatal ("`-%c' must come at the start of the command line", c);
3567 if (p[1] == 0 && i + 1 == argc)
3568 fatal ("argument to `-B' is missing");
3574 len = strlen (value);
3576 /* Catch the case where the user has forgotten to append a
3577 directory separator to the path. Note, they may be using
3578 -B to add an executable name prefix, eg "i386-elf-", in
3579 order to distinguish between multiple installations of
3580 GCC in the same directory. Hence we must check to see
3581 if appending a directory separator actually makes a
3582 valid directory name. */
3583 if (! IS_DIR_SEPARATOR (value [len - 1])
3584 && is_directory (value, "", 0))
3586 char *tmp = xmalloc (len + 2);
3587 strcpy (tmp, value);
3588 tmp[len] = DIR_SEPARATOR;
3593 /* As a kludge, if the arg is "[foo/]stageN/", just
3594 add "[foo/]include" to the include prefix. */
3597 && (IS_DIR_SEPARATOR (value[len - 8]))))
3598 && strncmp (value + len - 7, "stage", 5) == 0
3599 && ISDIGIT (value[len - 2])
3600 && (IS_DIR_SEPARATOR (value[len - 1])))
3603 add_prefix (&include_prefixes, "include", NULL,
3604 PREFIX_PRIORITY_B_OPT, 0, NULL, 0);
3607 char * string = xmalloc (len + 1);
3609 strncpy (string, value, len - 7);
3610 strcpy (string + len - 7, "include");
3611 add_prefix (&include_prefixes, string, NULL,
3612 PREFIX_PRIORITY_B_OPT, 0, NULL, 0);
3616 add_prefix (&exec_prefixes, value, NULL,
3617 PREFIX_PRIORITY_B_OPT, 0, &warn_B, 0);
3618 add_prefix (&startfile_prefixes, value, NULL,
3619 PREFIX_PRIORITY_B_OPT, 0, &warn_B, 0);
3620 add_prefix (&include_prefixes, concat (value, "include", NULL),
3621 NULL, PREFIX_PRIORITY_B_OPT, 0, NULL, 0);
3626 case 'v': /* Print our subcommands and print versions. */
3628 /* If they do anything other than exactly `-v', don't set
3629 verbose_flag; rather, continue on to give the error. */
3647 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3652 /* Forward scan, just in case -S or -c is specified
3659 if (argv[j][0] == '-')
3661 if (SWITCH_CURTAILS_COMPILATION (argv[j][1])
3667 else if ((skip = SWITCH_TAKES_ARG (argv[j][1])))
3668 j += skip - (argv[j][2] != 0);
3669 else if ((skip = WORD_SWITCH_TAKES_ARG (argv[j] + 1)))
3676 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX) || defined(HAVE_TARGET_OBJECT_SUFFIX)
3678 argv[i + 1] = convert_filename (argv[i + 1], ! have_c, 0);
3680 argv[i] = convert_filename (argv[i], ! have_c, 0);
3687 #ifdef MODIFY_TARGET_NAME
3688 is_modify_target_name = 0;
3690 for (j = 0; j < ARRAY_SIZE (modify_target); j++)
3691 if (! strcmp (argv[i], modify_target[j].sw))
3693 char *new_name = xmalloc (strlen (modify_target[j].str)
3694 + strlen (spec_machine));
3697 int made_addition = 0;
3699 is_modify_target_name = 1;
3700 for (p = spec_machine, q = new_name; *p != 0; )
3702 if (modify_target[j].add_del == DELETE
3703 && (! strncmp (q, modify_target[j].str,
3704 strlen (modify_target[j].str))))
3705 p += strlen (modify_target[j].str);
3706 else if (modify_target[j].add_del == ADD
3707 && ! made_addition && *p == '-')
3709 for (r = modify_target[j].str; *r != 0; )
3717 spec_machine = new_name;
3720 if (is_modify_target_name)
3726 if (SWITCH_TAKES_ARG (c) > (p[1] != 0))
3727 i += SWITCH_TAKES_ARG (c) - (p[1] != 0);
3728 else if (WORD_SWITCH_TAKES_ARG (p))
3729 i += WORD_SWITCH_TAKES_ARG (p);
3739 combine_inputs = (have_c && have_o && lang_n_infiles > 1);
3741 if ((save_temps_flag || report_times) && use_pipes)
3743 /* -save-temps overrides -pipe, so that temp files are produced */
3744 if (save_temps_flag)
3745 error ("warning: -pipe ignored because -save-temps specified");
3746 /* -time overrides -pipe because we can't get correct stats when
3747 multiple children are running at once. */
3748 else if (report_times)
3749 error ("warning: -pipe ignored because -time specified");
3754 /* Set up the search paths before we go looking for config files. */
3756 /* These come before the md prefixes so that we will find gcc's subcommands
3757 (such as cpp) rather than those of the host system. */
3758 /* Use 2 as fourth arg meaning try just the machine as a suffix,
3759 as well as trying the machine and the version. */
3761 add_prefix (&exec_prefixes, standard_libexec_prefix, "GCC",
3762 PREFIX_PRIORITY_LAST, 1, warn_std_ptr, 0);
3763 add_prefix (&exec_prefixes, standard_libexec_prefix, "BINUTILS",
3764 PREFIX_PRIORITY_LAST, 2, warn_std_ptr, 0);
3765 add_prefix (&exec_prefixes, standard_exec_prefix, "BINUTILS",
3766 PREFIX_PRIORITY_LAST, 2, warn_std_ptr, 0);
3767 add_prefix (&exec_prefixes, standard_exec_prefix_1, "BINUTILS",
3768 PREFIX_PRIORITY_LAST, 2, warn_std_ptr, 0);
3769 add_prefix (&exec_prefixes, standard_exec_prefix_2, "BINUTILS",
3770 PREFIX_PRIORITY_LAST, 2, warn_std_ptr, 0);
3773 add_prefix (&startfile_prefixes, standard_exec_prefix, "BINUTILS",
3774 PREFIX_PRIORITY_LAST, 1, warn_std_ptr, 0);
3775 add_prefix (&startfile_prefixes, standard_exec_prefix_2, "BINUTILS",
3776 PREFIX_PRIORITY_LAST, 1, warn_std_ptr, 0);
3778 tooldir_prefix = concat (tooldir_base_prefix, spec_machine,
3779 dir_separator_str, NULL);
3781 /* If tooldir is relative, base it on exec_prefixes. A relative
3782 tooldir lets us move the installed tree as a unit.
3784 If GCC_EXEC_PREFIX is defined, then we want to add two relative
3785 directories, so that we can search both the user specified directory
3786 and the standard place. */
3788 if (!IS_ABSOLUTE_PATH (tooldir_prefix))
3790 if (gcc_exec_prefix)
3792 char *gcc_exec_tooldir_prefix
3793 = concat (gcc_exec_prefix, spec_machine, dir_separator_str,
3794 spec_version, dir_separator_str, tooldir_prefix, NULL);
3796 add_prefix (&exec_prefixes,
3797 concat (gcc_exec_tooldir_prefix, "bin",
3798 dir_separator_str, NULL),
3799 NULL, PREFIX_PRIORITY_LAST, 0, NULL, 0);
3800 add_prefix (&startfile_prefixes,
3801 concat (gcc_exec_tooldir_prefix, "lib",
3802 dir_separator_str, NULL),
3803 NULL, PREFIX_PRIORITY_LAST, 0, NULL, 1);
3806 tooldir_prefix = concat (standard_exec_prefix, spec_machine,
3807 dir_separator_str, spec_version,
3808 dir_separator_str, tooldir_prefix, NULL);
3811 add_prefix (&exec_prefixes,
3812 concat (tooldir_prefix, "bin", dir_separator_str, NULL),
3813 "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL, 0);
3814 add_prefix (&startfile_prefixes,
3815 concat (tooldir_prefix, "lib", dir_separator_str, NULL),
3816 "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL, 1);
3818 #if defined(TARGET_SYSTEM_ROOT_RELOCATABLE) && !defined(VMS)
3819 /* If the normal TARGET_SYSTEM_ROOT is inside of $exec_prefix,
3820 then consider it to relocate with the rest of the GCC installation
3821 if GCC_EXEC_PREFIX is set.
3822 ``make_relative_prefix'' is not compiled for VMS, so don't call it. */
3823 if (target_system_root && gcc_exec_prefix)
3825 char *tmp_prefix = make_relative_prefix (argv[0],
3826 standard_bindir_prefix,
3827 target_system_root);
3828 if (tmp_prefix && access_check (tmp_prefix, F_OK) == 0)
3830 target_system_root = tmp_prefix;
3831 target_system_root_changed = 1;
3836 /* More prefixes are enabled in main, after we read the specs file
3837 and determine whether this is cross-compilation or not. */
3839 /* Then create the space for the vectors and scan again. */
3841 switches = xmalloc ((n_switches + 1) * sizeof (struct switchstr));
3842 infiles = xmalloc ((n_infiles + 1) * sizeof (struct infile));
3845 last_language_n_infiles = -1;
3847 /* This, time, copy the text of each switch and store a pointer
3848 to the copy in the vector of switches.
3849 Store all the infiles in their vector. */
3851 for (i = 1; i < argc; i++)
3853 /* Just skip the switches that were handled by the preceding loop. */
3854 #ifdef MODIFY_TARGET_NAME
3855 is_modify_target_name = 0;
3857 for (j = 0; j < ARRAY_SIZE (modify_target); j++)
3858 if (! strcmp (argv[i], modify_target[j].sw))
3859 is_modify_target_name = 1;
3861 if (is_modify_target_name)
3865 if (! strncmp (argv[i], "-Wa,", 4))
3867 else if (! strncmp (argv[i], "-Wp,", 4))
3869 else if (! strcmp (argv[i], "-pass-exit-codes"))
3871 else if (! strcmp (argv[i], "-print-search-dirs"))
3873 else if (! strcmp (argv[i], "-print-libgcc-file-name"))
3875 else if (! strncmp (argv[i], "-print-file-name=", 17))
3877 else if (! strncmp (argv[i], "-print-prog-name=", 17))
3879 else if (! strcmp (argv[i], "-print-multi-lib"))
3881 else if (! strcmp (argv[i], "-print-multi-directory"))
3883 else if (! strcmp (argv[i], "-print-multi-os-directory"))
3885 else if (! strcmp (argv[i], "-ftarget-help"))
3887 else if (! strcmp (argv[i], "-fhelp"))
3889 else if (argv[i][0] == '+' && argv[i][1] == 'e')
3891 /* Compensate for the +e options to the C++ front-end;
3892 they're there simply for cfront call-compatibility. We do
3893 some magic in default_compilers to pass them down properly.
3894 Note we deliberately start at the `+' here, to avoid passing
3895 -e0 or -e1 down into the linker. */
3896 switches[n_switches].part1 = &argv[i][0];
3897 switches[n_switches].args = 0;
3898 switches[n_switches].live_cond = SWITCH_OK;
3899 switches[n_switches].validated = 0;
3902 else if (strncmp (argv[i], "-Wl,", 4) == 0)
3905 /* Split the argument at commas. */
3907 for (j = 4; argv[i][j]; j++)
3908 if (argv[i][j] == ',')
3910 infiles[n_infiles].language = "*";
3911 infiles[n_infiles++].name
3912 = save_string (argv[i] + prev, j - prev);
3915 /* Record the part after the last comma. */
3916 infiles[n_infiles].language = "*";
3917 infiles[n_infiles++].name = argv[i] + prev;
3919 else if (strcmp (argv[i], "-Xlinker") == 0)
3921 infiles[n_infiles].language = "*";
3922 infiles[n_infiles++].name = argv[++i];
3924 else if (strcmp (argv[i], "-Xassembler") == 0)
3926 infiles[n_infiles].language = "*";
3927 infiles[n_infiles++].name = argv[++i];
3929 else if (strcmp (argv[i], "-Xpreprocessor") == 0)
3931 infiles[n_infiles].language = "*";
3932 infiles[n_infiles++].name = argv[++i];
3934 else if (strcmp (argv[i], "-l") == 0)
3935 { /* POSIX allows separation of -l and the lib arg;
3936 canonicalize by concatenating -l with its arg */
3937 infiles[n_infiles].language = "*";
3938 infiles[n_infiles++].name = concat ("-l", argv[++i], NULL);
3940 else if (strncmp (argv[i], "-l", 2) == 0)
3942 infiles[n_infiles].language = "*";
3943 infiles[n_infiles++].name = argv[i];
3945 else if (strcmp (argv[i], "-specs") == 0)
3947 else if (strncmp (argv[i], "-specs=", 7) == 0)
3949 else if (strcmp (argv[i], "-time") == 0)
3951 else if (strcmp (argv[i], "-###") == 0)
3953 else if (argv[i][0] == '-' && argv[i][1] != 0)
3955 const char *p = &argv[i][1];
3960 if (p[1] == 0 && i + 1 == argc)
3961 fatal ("argument to `-x' is missing");
3963 spec_lang = argv[++i];
3966 if (! strcmp (spec_lang, "none"))
3967 /* Suppress the warning if -xnone comes after the last input
3968 file, because alternate command interfaces like g++ might
3969 find it useful to place -xnone after each input file. */
3972 last_language_n_infiles = n_infiles;
3975 switches[n_switches].part1 = p;
3976 /* Deal with option arguments in separate argv elements. */
3977 if ((SWITCH_TAKES_ARG (c) > (p[1] != 0))
3978 || WORD_SWITCH_TAKES_ARG (p))
3981 int n_args = WORD_SWITCH_TAKES_ARG (p);
3985 /* Count only the option arguments in separate argv elements. */
3986 n_args = SWITCH_TAKES_ARG (c) - (p[1] != 0);
3988 if (i + n_args >= argc)
3989 fatal ("argument to `-%s' is missing", p);
3990 switches[n_switches].args
3991 = xmalloc ((n_args + 1) * sizeof(const char *));
3993 switches[n_switches].args[j++] = argv[++i];
3994 /* Null-terminate the vector. */
3995 switches[n_switches].args[j] = 0;
3997 else if (strchr (switches_need_spaces, c))
3999 /* On some systems, ld cannot handle some options without
4000 a space. So split the option from its argument. */
4001 char *part1 = xmalloc (2);
4005 switches[n_switches].part1 = part1;
4006 switches[n_switches].args = xmalloc (2 * sizeof (const char *));
4007 switches[n_switches].args[0] = xstrdup (p+1);
4008 switches[n_switches].args[1] = 0;
4011 switches[n_switches].args = 0;
4013 switches[n_switches].live_cond = SWITCH_OK;
4014 switches[n_switches].validated = 0;
4015 switches[n_switches].ordering = 0;
4016 /* These are always valid, since gcc.c itself understands them. */
4017 if (!strcmp (p, "save-temps")
4018 || !strcmp (p, "static-libgcc")
4019 || !strcmp (p, "shared-libgcc")
4020 || !strcmp (p, "pipe"))
4021 switches[n_switches].validated = 1;
4024 char ch = switches[n_switches].part1[0];
4026 switches[n_switches].validated = 1;
4032 #ifdef HAVE_TARGET_OBJECT_SUFFIX
4033 argv[i] = convert_filename (argv[i], 0, access (argv[i], F_OK));
4036 if (strcmp (argv[i], "-") != 0 && access (argv[i], F_OK) < 0)
4038 perror_with_name (argv[i]);
4043 infiles[n_infiles].language = spec_lang;
4044 infiles[n_infiles++].name = argv[i];
4049 if (n_infiles == last_language_n_infiles && spec_lang != 0)
4050 error ("warning: `-x %s' after last input file has no effect", spec_lang);
4052 /* Ensure we only invoke each subprocess once. */
4053 if (target_help_flag || print_help_list)
4057 /* Create a dummy input file, so that we can pass --target-help on to
4058 the various sub-processes. */
4059 infiles[0].language = "c";
4060 infiles[0].name = "help-dummy";
4062 if (target_help_flag)
4064 switches[n_switches].part1 = "--target-help";
4065 switches[n_switches].args = 0;
4066 switches[n_switches].live_cond = SWITCH_OK;
4067 switches[n_switches].validated = 0;
4072 if (print_help_list)
4074 switches[n_switches].part1 = "--help";
4075 switches[n_switches].args = 0;
4076 switches[n_switches].live_cond = SWITCH_OK;
4077 switches[n_switches].validated = 0;
4083 switches[n_switches].part1 = 0;
4084 infiles[n_infiles].name = 0;
4087 /* Store switches not filtered out by %<S in spec in COLLECT_GCC_OPTIONS
4088 and place that in the environment. */
4091 set_collect_gcc_options (void)
4096 /* Build COLLECT_GCC_OPTIONS to have all of the options specified to
4098 obstack_grow (&collect_obstack, "COLLECT_GCC_OPTIONS=",
4099 sizeof ("COLLECT_GCC_OPTIONS=") - 1);
4102 for (i = 0; (int) i < n_switches; i++)
4104 const char *const *args;
4107 obstack_grow (&collect_obstack, " ", 1);
4111 /* Ignore elided switches. */
4112 if (switches[i].live_cond == SWITCH_IGNORE)
4115 obstack_grow (&collect_obstack, "'-", 2);
4116 q = switches[i].part1;
4117 while ((p = strchr (q, '\'')))
4119 obstack_grow (&collect_obstack, q, p - q);
4120 obstack_grow (&collect_obstack, "'\\''", 4);
4123 obstack_grow (&collect_obstack, q, strlen (q));
4124 obstack_grow (&collect_obstack, "'", 1);
4126 for (args = switches[i].args; args && *args; args++)
4128 obstack_grow (&collect_obstack, " '", 2);
4130 while ((p = strchr (q, '\'')))
4132 obstack_grow (&collect_obstack, q, p - q);
4133 obstack_grow (&collect_obstack, "'\\''", 4);
4136 obstack_grow (&collect_obstack, q, strlen (q));
4137 obstack_grow (&collect_obstack, "'", 1);
4140 obstack_grow (&collect_obstack, "\0", 1);
4141 putenv (obstack_finish (&collect_obstack));
4144 /* Process a spec string, accumulating and running commands. */
4146 /* These variables describe the input file name.
4147 input_file_number is the index on outfiles of this file,
4148 so that the output file name can be stored for later use by %o.
4149 input_basename is the start of the part of the input file
4150 sans all directory names, and basename_length is the number
4151 of characters starting there excluding the suffix .c or whatever. */
4153 static const char *input_filename;
4154 static int input_file_number;
4155 size_t input_filename_length;
4156 static int basename_length;
4157 static int suffixed_basename_length;
4158 static const char *input_basename;
4159 static const char *input_suffix;
4160 static struct stat input_stat;
4161 static int input_stat_set;
4163 /* The compiler used to process the current input file. */
4164 static struct compiler *input_file_compiler;
4166 /* These are variables used within do_spec and do_spec_1. */
4168 /* Nonzero if an arg has been started and not yet terminated
4169 (with space, tab or newline). */
4170 static int arg_going;
4172 /* Nonzero means %d or %g has been seen; the next arg to be terminated
4173 is a temporary file name. */
4174 static int delete_this_arg;
4176 /* Nonzero means %w has been seen; the next arg to be terminated
4177 is the output file name of this compilation. */
4178 static int this_is_output_file;
4180 /* Nonzero means %s has been seen; the next arg to be terminated
4181 is the name of a library file and we should try the standard
4182 search dirs for it. */
4183 static int this_is_library_file;
4185 /* Nonzero means that the input of this command is coming from a pipe. */
4186 static int input_from_pipe;
4188 /* Nonnull means substitute this for any suffix when outputting a switches
4190 static const char *suffix_subst;
4192 /* Process the spec SPEC and run the commands specified therein.
4193 Returns 0 if the spec is successfully processed; -1 if failed. */
4196 do_spec (const char *spec)
4200 value = do_spec_2 (spec);
4202 /* Force out any unfinished command.
4203 If -pipe, this forces out the last command if it ended in `|'. */
4206 if (argbuf_index > 0 && !strcmp (argbuf[argbuf_index - 1], "|"))
4209 set_collect_gcc_options ();
4211 if (argbuf_index > 0)
4219 do_spec_2 (const char *spec)
4226 delete_this_arg = 0;
4227 this_is_output_file = 0;
4228 this_is_library_file = 0;
4229 input_from_pipe = 0;
4230 suffix_subst = NULL;
4232 result = do_spec_1 (spec, 0, NULL);
4234 /* End any pending argument. */
4237 obstack_1grow (&obstack, 0);
4238 string = obstack_finish (&obstack);
4239 if (this_is_library_file)
4240 string = find_file (string);
4241 store_arg (string, delete_this_arg, this_is_output_file);
4242 if (this_is_output_file)
4243 outfiles[input_file_number] = string;
4251 /* Process the given spec string and add any new options to the end
4252 of the switches/n_switches array. */
4255 do_option_spec (const char *name, const char *spec)
4257 unsigned int i, value_count, value_len;
4258 const char *p, *q, *value;
4259 char *tmp_spec, *tmp_spec_p;
4261 if (configure_default_options[0].name == NULL)
4264 for (i = 0; i < ARRAY_SIZE (configure_default_options); i++)
4265 if (strcmp (configure_default_options[i].name, name) == 0)
4267 if (i == ARRAY_SIZE (configure_default_options))
4270 value = configure_default_options[i].value;
4271 value_len = strlen (value);
4273 /* Compute the size of the final spec. */
4276 while ((p = strstr (p, "%(VALUE)")) != NULL)
4282 /* Replace each %(VALUE) by the specified value. */
4283 tmp_spec = alloca (strlen (spec) + 1
4284 + value_count * (value_len - strlen ("%(VALUE)")));
4285 tmp_spec_p = tmp_spec;
4287 while ((p = strstr (q, "%(VALUE)")) != NULL)
4289 memcpy (tmp_spec_p, q, p - q);
4290 tmp_spec_p = tmp_spec_p + (p - q);
4291 memcpy (tmp_spec_p, value, value_len);
4292 tmp_spec_p += value_len;
4293 q = p + strlen ("%(VALUE)");
4295 strcpy (tmp_spec_p, q);
4297 do_self_spec (tmp_spec);
4300 /* Process the given spec string and add any new options to the end
4301 of the switches/n_switches array. */
4304 do_self_spec (const char *spec)
4307 do_spec_1 (" ", 0, NULL);
4309 if (argbuf_index > 0)
4314 n_switches += argbuf_index;
4315 switches = xrealloc (switches,
4316 sizeof (struct switchstr) * (n_switches + 1));
4318 switches[n_switches] = switches[first];
4319 for (i = 0; i < argbuf_index; i++)
4321 struct switchstr *sw;
4323 /* Each switch should start with '-'. */
4324 if (argbuf[i][0] != '-')
4327 sw = &switches[i + first];
4328 sw->part1 = &argbuf[i][1];
4330 sw->live_cond = SWITCH_OK;
4337 /* Process the sub-spec SPEC as a portion of a larger spec.
4338 This is like processing a whole spec except that we do
4339 not initialize at the beginning and we do not supply a
4340 newline by default at the end.
4341 INSWITCH nonzero means don't process %-sequences in SPEC;
4342 in this case, % is treated as an ordinary character.
4343 This is used while substituting switches.
4344 INSWITCH nonzero also causes SPC not to terminate an argument.
4346 Value is zero unless a line was finished
4347 and the command on that line reported an error. */
4350 do_spec_1 (const char *spec, int inswitch, const char *soft_matched_part)
4352 const char *p = spec;
4359 /* If substituting a switch, treat all chars like letters.
4360 Otherwise, NL, SPC, TAB and % are special. */
4361 switch (inswitch ? 'a' : c)
4364 /* End of line: finish any pending argument,
4365 then run the pending command if one has been started. */
4368 obstack_1grow (&obstack, 0);
4369 string = obstack_finish (&obstack);
4370 if (this_is_library_file)
4371 string = find_file (string);
4372 store_arg (string, delete_this_arg, this_is_output_file);
4373 if (this_is_output_file)
4374 outfiles[input_file_number] = string;
4378 if (argbuf_index > 0 && !strcmp (argbuf[argbuf_index - 1], "|"))
4380 /* A `|' before the newline means use a pipe here,
4381 but only if -pipe was specified.
4382 Otherwise, execute now and don't pass the `|' as an arg. */
4385 input_from_pipe = 1;
4392 set_collect_gcc_options ();
4394 if (argbuf_index > 0)
4400 /* Reinitialize for a new command, and for a new argument. */
4403 delete_this_arg = 0;
4404 this_is_output_file = 0;
4405 this_is_library_file = 0;
4406 input_from_pipe = 0;
4410 /* End any pending argument. */
4413 obstack_1grow (&obstack, 0);
4414 string = obstack_finish (&obstack);
4415 if (this_is_library_file)
4416 string = find_file (string);
4417 store_arg (string, delete_this_arg, this_is_output_file);
4418 if (this_is_output_file)
4419 outfiles[input_file_number] = string;
4423 obstack_1grow (&obstack, c);
4429 /* Space or tab ends an argument if one is pending. */
4432 obstack_1grow (&obstack, 0);
4433 string = obstack_finish (&obstack);
4434 if (this_is_library_file)
4435 string = find_file (string);
4436 store_arg (string, delete_this_arg, this_is_output_file);
4437 if (this_is_output_file)
4438 outfiles[input_file_number] = string;
4440 /* Reinitialize for a new argument. */
4442 delete_this_arg = 0;
4443 this_is_output_file = 0;
4444 this_is_library_file = 0;
4451 fatal ("invalid specification! Bug in cc");
4454 obstack_grow (&obstack, input_basename, basename_length);
4459 obstack_grow (&obstack, input_basename, suffixed_basename_length);
4464 delete_this_arg = 2;
4467 /* Dump out the directories specified with LIBRARY_PATH,
4468 followed by the absolute directories
4469 that we search for startfiles. */
4472 struct prefix_list *pl = startfile_prefixes.plist;
4473 size_t bufsize = 100;
4474 char *buffer = xmalloc (bufsize);
4477 for (; pl; pl = pl->next)
4479 #ifdef RELATIVE_PREFIX_NOT_LINKDIR
4480 /* Used on systems which record the specified -L dirs
4481 and use them to search for dynamic linking. */
4482 /* Relative directories always come from -B,
4483 and it is better not to use them for searching
4484 at run time. In particular, stage1 loses. */
4485 if (!IS_ABSOLUTE_PATH (pl->prefix))
4488 /* Try subdirectory if there is one. */
4489 if (multilib_dir != NULL
4490 || (pl->os_multilib && multilib_os_dir != NULL))
4492 const char *multi_dir;
4494 multi_dir = pl->os_multilib ? multilib_os_dir
4496 if (machine_suffix && multilib_dir)
4498 if (strlen (pl->prefix) + strlen (machine_suffix)
4500 bufsize = (strlen (pl->prefix)
4501 + strlen (machine_suffix)) * 2 + 1;
4502 buffer = xrealloc (buffer, bufsize);
4503 strcpy (buffer, pl->prefix);
4504 strcat (buffer, machine_suffix);
4505 if (is_directory (buffer, multilib_dir, 1))
4507 do_spec_1 ("-L", 0, NULL);
4508 #ifdef SPACE_AFTER_L_OPTION
4509 do_spec_1 (" ", 0, NULL);
4511 do_spec_1 (buffer, 1, NULL);
4512 do_spec_1 (multilib_dir, 1, NULL);
4513 /* Make this a separate argument. */
4514 do_spec_1 (" ", 0, NULL);
4517 if (!pl->require_machine_suffix)
4519 if (is_directory (pl->prefix, multi_dir, 1))
4521 do_spec_1 ("-L", 0, NULL);
4522 #ifdef SPACE_AFTER_L_OPTION
4523 do_spec_1 (" ", 0, NULL);
4525 do_spec_1 (pl->prefix, 1, NULL);
4526 do_spec_1 (multi_dir, 1, NULL);
4527 /* Make this a separate argument. */
4528 do_spec_1 (" ", 0, NULL);
4534 if (is_directory (pl->prefix, machine_suffix, 1))
4536 do_spec_1 ("-L", 0, NULL);
4537 #ifdef SPACE_AFTER_L_OPTION
4538 do_spec_1 (" ", 0, NULL);
4540 do_spec_1 (pl->prefix, 1, NULL);
4541 /* Remove slash from machine_suffix. */
4542 if (strlen (machine_suffix) >= bufsize)
4543 bufsize = strlen (machine_suffix) * 2 + 1;
4544 buffer = xrealloc (buffer, bufsize);
4545 strcpy (buffer, machine_suffix);
4546 idx = strlen (buffer);
4547 if (IS_DIR_SEPARATOR (buffer[idx - 1]))
4548 buffer[idx - 1] = 0;
4549 do_spec_1 (buffer, 1, NULL);
4550 /* Make this a separate argument. */
4551 do_spec_1 (" ", 0, NULL);
4554 if (!pl->require_machine_suffix)
4556 if (is_directory (pl->prefix, "", 1))
4558 do_spec_1 ("-L", 0, NULL);
4559 #ifdef SPACE_AFTER_L_OPTION
4560 do_spec_1 (" ", 0, NULL);
4562 /* Remove slash from pl->prefix. */
4563 if (strlen (pl->prefix) >= bufsize)
4564 bufsize = strlen (pl->prefix) * 2 + 1;
4565 buffer = xrealloc (buffer, bufsize);
4566 strcpy (buffer, pl->prefix);
4567 idx = strlen (buffer);
4568 if (IS_DIR_SEPARATOR (buffer[idx - 1]))
4569 buffer[idx - 1] = 0;
4570 do_spec_1 (buffer, 1, NULL);
4571 /* Make this a separate argument. */
4572 do_spec_1 (" ", 0, NULL);
4581 /* %efoo means report an error with `foo' as error message
4582 and don't execute any more commands for this file. */
4586 while (*p != 0 && *p != '\n')
4588 buf = alloca (p - q + 1);
4589 strncpy (buf, q, p - q);
4596 /* %nfoo means report a notice with `foo' on stderr. */
4600 while (*p != 0 && *p != '\n')
4602 buf = alloca (p - q + 1);
4603 strncpy (buf, q, p - q);
4605 notice ("%s\n", buf);
4615 /* If save_temps_flag is off, and the HOST_BIT_BUCKET is
4616 defined, and it is not a directory, and it is
4617 writable, use it. Otherwise, treat this like any
4618 other temporary file. */
4620 if ((!save_temps_flag)
4621 && (stat (HOST_BIT_BUCKET, &st) == 0) && (!S_ISDIR (st.st_mode))
4622 && (access (HOST_BIT_BUCKET, W_OK) == 0))
4624 obstack_grow (&obstack, HOST_BIT_BUCKET,
4625 strlen (HOST_BIT_BUCKET));
4626 delete_this_arg = 0;
4631 goto create_temp_file;
4635 obstack_1grow (&obstack, '-');
4636 delete_this_arg = 0;
4639 /* consume suffix */
4640 while (*p == '.' || ISALPHA ((unsigned char) *p))
4642 if (p[0] == '%' && p[1] == 'O')
4647 goto create_temp_file;
4651 /* consume suffix */
4652 while (*p == '.' || ISALPHA ((unsigned char) *p))
4654 if (p[0] == '%' && p[1] == 'O')
4659 goto create_temp_file;
4665 struct temp_name *t;
4667 const char *suffix = p;
4668 char *saved_suffix = NULL;
4670 while (*p == '.' || ISALPHA ((unsigned char) *p))
4672 suffix_length = p - suffix;
4673 if (p[0] == '%' && p[1] == 'O')
4676 /* We don't support extra suffix characters after %O. */
4677 if (*p == '.' || ISALPHA ((unsigned char) *p))
4679 if (suffix_length == 0)
4680 suffix = TARGET_OBJECT_SUFFIX;
4684 = xmalloc (suffix_length
4685 + strlen (TARGET_OBJECT_SUFFIX));
4686 strncpy (saved_suffix, suffix, suffix_length);
4687 strcpy (saved_suffix + suffix_length,
4688 TARGET_OBJECT_SUFFIX);
4690 suffix_length += strlen (TARGET_OBJECT_SUFFIX);
4693 /* If the input_filename has the same suffix specified
4694 for the %g, %u, or %U, and -save-temps is specified,
4695 we could end up using that file as an intermediate
4696 thus clobbering the user's source file (.e.g.,
4697 gcc -save-temps foo.s would clobber foo.s with the
4698 output of cpp0). So check for this condition and
4699 generate a temp file as the intermediate. */
4701 if (save_temps_flag)
4703 temp_filename_length = basename_length + suffix_length;
4704 temp_filename = alloca (temp_filename_length + 1);
4705 strncpy ((char *) temp_filename, input_basename, basename_length);
4706 strncpy ((char *) temp_filename + basename_length, suffix,
4708 *((char *) temp_filename + temp_filename_length) = '\0';
4709 if (strcmp (temp_filename, input_filename) != 0)
4711 struct stat st_temp;
4713 /* Note, set_input() resets input_stat_set to 0. */
4714 if (input_stat_set == 0)
4716 input_stat_set = stat (input_filename, &input_stat);
4717 if (input_stat_set >= 0)
4721 /* If we have the stat for the input_filename
4722 and we can do the stat for the temp_filename
4723 then the they could still refer to the same
4724 file if st_dev/st_ino's are the same. */
4726 if (input_stat_set != 1
4727 || stat (temp_filename, &st_temp) < 0
4728 || input_stat.st_dev != st_temp.st_dev
4729 || input_stat.st_ino != st_temp.st_ino)
4731 temp_filename = save_string (temp_filename,
4732 temp_filename_length + 1);
4733 obstack_grow (&obstack, temp_filename,
4734 temp_filename_length);
4736 delete_this_arg = 0;
4742 /* See if we already have an association of %g/%u/%U and
4744 for (t = temp_names; t; t = t->next)
4745 if (t->length == suffix_length
4746 && strncmp (t->suffix, suffix, suffix_length) == 0
4747 && t->unique == (c == 'u' || c == 'U' || c == 'j'))
4750 /* Make a new association if needed. %u and %j
4752 if (t == 0 || c == 'u' || c == 'j')
4756 t = xmalloc (sizeof (struct temp_name));
4757 t->next = temp_names;
4760 t->length = suffix_length;
4763 t->suffix = saved_suffix;
4764 saved_suffix = NULL;
4767 t->suffix = save_string (suffix, suffix_length);
4768 t->unique = (c == 'u' || c == 'U' || c == 'j');
4769 temp_filename = make_temp_file (t->suffix);
4770 temp_filename_length = strlen (temp_filename);
4771 t->filename = temp_filename;
4772 t->filename_length = temp_filename_length;
4776 free (saved_suffix);
4778 obstack_grow (&obstack, t->filename, t->filename_length);
4779 delete_this_arg = 1;
4787 for (i = 0; (int) i < n_infiles; i++)
4788 store_arg (infiles[i].name, 0, 0);
4792 obstack_grow (&obstack, input_filename, input_filename_length);
4799 struct prefix_list *pl = include_prefixes.plist;
4801 if (gcc_exec_prefix)
4803 do_spec_1 ("-iprefix", 1, NULL);
4804 /* Make this a separate argument. */
4805 do_spec_1 (" ", 0, NULL);
4806 do_spec_1 (gcc_exec_prefix, 1, NULL);
4807 do_spec_1 (" ", 0, NULL);
4810 if (target_system_root_changed ||
4811 (target_system_root && target_sysroot_hdrs_suffix))
4813 do_spec_1 ("-isysroot", 1, NULL);
4814 /* Make this a separate argument. */
4815 do_spec_1 (" ", 0, NULL);
4816 do_spec_1 (target_system_root, 1, NULL);
4817 if (target_sysroot_hdrs_suffix)
4818 do_spec_1 (target_sysroot_hdrs_suffix, 1, NULL);
4819 do_spec_1 (" ", 0, NULL);
4822 for (; pl; pl = pl->next)
4824 do_spec_1 ("-isystem", 1, NULL);
4825 /* Make this a separate argument. */
4826 do_spec_1 (" ", 0, NULL);
4827 do_spec_1 (pl->prefix, 1, NULL);
4828 do_spec_1 (" ", 0, NULL);
4835 int max = n_infiles;
4836 max += lang_specific_extra_outfiles;
4838 for (i = 0; i < max; i++)
4840 store_arg (outfiles[i], 0, 0);
4845 obstack_grow (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX));
4850 this_is_library_file = 1;
4854 outfiles[input_file_number] = NULL;
4858 this_is_output_file = 1;
4863 int cur_index = argbuf_index;
4864 /* Handle the {...} following the %W. */
4867 p = handle_braces (p + 1);
4870 /* End any pending argument. */
4873 obstack_1grow (&obstack, 0);
4874 string = obstack_finish (&obstack);
4875 if (this_is_library_file)
4876 string = find_file (string);
4877 store_arg (string, delete_this_arg, this_is_output_file);
4878 if (this_is_output_file)
4879 outfiles[input_file_number] = string;
4882 /* If any args were output, mark the last one for deletion
4884 if (argbuf_index != cur_index)
4885 record_temp_file (argbuf[argbuf_index - 1], 0, 1);
4889 /* %x{OPTION} records OPTION for %X to output. */
4895 /* Skip past the option value and make a copy. */
4900 string = save_string (p1 + 1, p - p1 - 2);
4902 /* See if we already recorded this option. */
4903 for (i = 0; i < n_linker_options; i++)
4904 if (! strcmp (string, linker_options[i]))
4910 /* This option is new; add it. */
4911 add_linker_option (string, strlen (string));
4915 /* Dump out the options accumulated previously using %x. */
4917 for (i = 0; i < n_linker_options; i++)
4919 do_spec_1 (linker_options[i], 1, NULL);
4920 /* Make each accumulated option a separate argument. */
4921 do_spec_1 (" ", 0, NULL);
4925 /* Dump out the options accumulated previously using -Wa,. */
4927 for (i = 0; i < n_assembler_options; i++)
4929 do_spec_1 (assembler_options[i], 1, NULL);
4930 /* Make each accumulated option a separate argument. */
4931 do_spec_1 (" ", 0, NULL);
4935 /* Dump out the options accumulated previously using -Wp,. */
4937 for (i = 0; i < n_preprocessor_options; i++)
4939 do_spec_1 (preprocessor_options[i], 1, NULL);
4940 /* Make each accumulated option a separate argument. */
4941 do_spec_1 (" ", 0, NULL);
4945 /* Here are digits and numbers that just process
4946 a certain constant string as a spec. */
4949 value = do_spec_1 (cc1_spec, 0, NULL);
4955 value = do_spec_1 (cc1plus_spec, 0, NULL);
4961 value = do_spec_1 (asm_spec, 0, NULL);
4967 value = do_spec_1 (asm_final_spec, 0, NULL);
4974 const char *const spec
4975 = (input_file_compiler->cpp_spec
4976 ? input_file_compiler->cpp_spec
4978 value = do_spec_1 (spec, 0, NULL);
4985 value = do_spec_1 (endfile_spec, 0, NULL);
4991 value = do_spec_1 (link_spec, 0, NULL);
4997 value = do_spec_1 (lib_spec, 0, NULL);
5003 value = do_spec_1 (libgcc_spec, 0, NULL);
5009 if (multilib_dir && strcmp (multilib_dir, ".") != 0)
5015 len = strlen (multilib_dir);
5016 obstack_blank (&obstack, len + 1);
5017 p = obstack_next_free (&obstack) - (len + 1);
5020 for (q = multilib_dir; *q ; ++q, ++p)
5021 *p = (IS_DIR_SEPARATOR (*q) ? '_' : *q);
5026 /* We assume there is a directory
5027 separator at the end of this string. */
5028 if (target_system_root)
5030 obstack_grow (&obstack, target_system_root,
5031 strlen (target_system_root));
5032 if (target_sysroot_suffix)
5033 obstack_grow (&obstack, target_sysroot_suffix,
5034 strlen (target_sysroot_suffix));
5039 value = do_spec_1 (startfile_spec, 0, NULL);
5044 /* Here we define characters other than letters and digits. */
5047 p = handle_braces (p);
5053 p = handle_spec_function (p);
5059 obstack_1grow (&obstack, '%');
5066 while (p[len] && p[len] != ' ' && p[len] != '%')
5068 suffix_subst = save_string (p - 1, len + 1);
5073 /* Henceforth ignore the option(s) matching the pattern
5078 int have_wildcard = 0;
5081 while (p[len] && p[len] != ' ' && p[len] != '\t')
5084 if (p[len-1] == '*')
5087 for (i = 0; i < n_switches; i++)
5088 if (!strncmp (switches[i].part1, p, len - have_wildcard)
5089 && (have_wildcard || switches[i].part1[len] == '\0'))
5091 switches[i].live_cond = SWITCH_IGNORE;
5092 switches[i].validated = 1;
5100 if (soft_matched_part)
5102 do_spec_1 (soft_matched_part, 1, NULL);
5103 do_spec_1 (" ", 0, NULL);
5106 /* Catch the case where a spec string contains something like
5107 '%{foo:%*}'. ie there is no * in the pattern on the left
5108 hand side of the :. */
5109 error ("spec failure: '%%*' has not been initialized by pattern match");
5112 /* Process a string found as the value of a spec given by name.
5113 This feature allows individual machine descriptions
5114 to add and use their own specs.
5115 %[...] modifies -D options the way %P does;
5116 %(...) uses the spec unmodified. */
5118 error ("warning: use of obsolete %%[ operator in specs");
5121 const char *name = p;
5122 struct spec_list *sl;
5125 /* The string after the S/P is the name of a spec that is to be
5127 while (*p && *p != ')' && *p != ']')
5130 /* See if it's in the list. */
5131 for (len = p - name, sl = specs; sl; sl = sl->next)
5132 if (sl->name_len == len && !strncmp (sl->name, name, len))
5134 name = *(sl->ptr_spec);
5136 notice ("Processing spec %c%s%c, which is '%s'\n",
5137 c, sl->name, (c == '(') ? ')' : ']', name);
5146 value = do_spec_1 (name, 0, NULL);
5152 char *x = alloca (strlen (name) * 2 + 1);
5154 const char *y = name;
5157 /* Copy all of NAME into BUF, but put __ after
5158 every -D and at the end of each arg. */
5161 if (! strncmp (y, "-D", 2))
5172 && (*y == ' ' || *y == '\t' || *y == '='
5173 || *y == '}' || *y == 0))
5186 value = do_spec_1 (buf, 0, NULL);
5192 /* Discard the closing paren or bracket. */
5199 error ("spec failure: unrecognized spec option '%c'", c);
5205 /* Backslash: treat next character as ordinary. */
5210 /* Ordinary character: put it into the current argument. */
5211 obstack_1grow (&obstack, c);
5215 /* End of string. If we are processing a spec function, we need to
5216 end any pending argument. */
5217 if (processing_spec_function && arg_going)
5219 obstack_1grow (&obstack, 0);
5220 string = obstack_finish (&obstack);
5221 if (this_is_library_file)
5222 string = find_file (string);
5223 store_arg (string, delete_this_arg, this_is_output_file);
5224 if (this_is_output_file)
5225 outfiles[input_file_number] = string;
5232 /* Look up a spec function. */
5234 static const struct spec_function *
5235 lookup_spec_function (const char *name)
5237 static const struct spec_function * const spec_function_tables[] =
5239 static_spec_functions,
5240 lang_specific_spec_functions,
5242 const struct spec_function *sf;
5245 for (i = 0; i < ARRAY_SIZE (spec_function_tables); i++)
5247 for (sf = spec_function_tables[i]; sf->name != NULL; sf++)
5248 if (strcmp (sf->name, name) == 0)
5255 /* Evaluate a spec function. */
5258 eval_spec_function (const char *func, const char *args)
5260 const struct spec_function *sf;
5261 const char *funcval;
5263 /* Saved spec processing context. */
5264 int save_argbuf_index;
5265 int save_argbuf_length;
5266 const char **save_argbuf;
5269 int save_delete_this_arg;
5270 int save_this_is_output_file;
5271 int save_this_is_library_file;
5272 int save_input_from_pipe;
5273 const char *save_suffix_subst;
5276 sf = lookup_spec_function (func);
5278 fatal ("unknown spec function `%s'", func);
5280 /* Push the spec processing context. */
5281 save_argbuf_index = argbuf_index;
5282 save_argbuf_length = argbuf_length;
5283 save_argbuf = argbuf;
5285 save_arg_going = arg_going;
5286 save_delete_this_arg = delete_this_arg;
5287 save_this_is_output_file = this_is_output_file;
5288 save_this_is_library_file = this_is_library_file;
5289 save_input_from_pipe = input_from_pipe;
5290 save_suffix_subst = suffix_subst;
5292 /* Create a new spec processing context, and build the function
5296 if (do_spec_2 (args) < 0)
5297 fatal ("error in args to spec function `%s'", func);
5299 /* argbuf_index is an index for the next argument to be inserted, and
5300 so contains the count of the args already inserted. */
5302 funcval = (*sf->func) (argbuf_index, argbuf);
5304 /* Pop the spec processing context. */
5305 argbuf_index = save_argbuf_index;
5306 argbuf_length = save_argbuf_length;
5308 argbuf = save_argbuf;
5310 arg_going = save_arg_going;
5311 delete_this_arg = save_delete_this_arg;
5312 this_is_output_file = save_this_is_output_file;
5313 this_is_library_file = save_this_is_library_file;
5314 input_from_pipe = save_input_from_pipe;
5315 suffix_subst = save_suffix_subst;
5320 /* Handle a spec function call of the form:
5324 ARGS is processed as a spec in a separate context and split into an
5325 argument vector in the normal fashion. The function returns a string
5326 containing a spec which we then process in the caller's context, or
5327 NULL if no processing is required. */
5330 handle_spec_function (const char *p)
5333 const char *endp, *funcval;
5336 processing_spec_function++;
5338 /* Get the function name. */
5339 for (endp = p; *endp != '\0'; endp++)
5341 if (*endp == '(') /* ) */
5343 /* Only allow [A-Za-z0-9], -, and _ in function names. */
5344 if (!ISALNUM (*endp) && !(*endp == '-' || *endp == '_'))
5345 fatal ("malformed spec function name");
5347 if (*endp != '(') /* ) */
5348 fatal ("no arguments for spec function");
5349 func = save_string (p, endp - p);
5352 /* Get the arguments. */
5353 for (count = 0; *endp != '\0'; endp++)
5362 else if (*endp == '(') /* ) */
5367 fatal ("malformed spec function arguments");
5368 args = save_string (p, endp - p);
5371 /* p now points to just past the end of the spec function expression. */
5373 funcval = eval_spec_function (func, args);
5374 if (funcval != NULL && do_spec_1 (funcval, 0, NULL) < 0)
5380 processing_spec_function--;
5385 /* Inline subroutine of handle_braces. Returns true if the current
5386 input suffix matches the atom bracketed by ATOM and END_ATOM. */
5388 input_suffix_matches (const char *atom, const char *end_atom)
5390 return (input_suffix
5391 && !strncmp (input_suffix, atom, end_atom - atom)
5392 && input_suffix[end_atom - atom] == '\0');
5395 /* Inline subroutine of handle_braces. Returns true if a switch
5396 matching the atom bracketed by ATOM and END_ATOM appeared on the
5399 switch_matches (const char *atom, const char *end_atom, int starred)
5402 int len = end_atom - atom;
5403 int plen = starred ? len : -1;
5405 for (i = 0; i < n_switches; i++)
5406 if (!strncmp (switches[i].part1, atom, len)
5407 && (starred || switches[i].part1[len] == '\0')
5408 && check_live_switch (i, plen))
5414 /* Inline subroutine of handle_braces. Mark all of the switches which
5415 match ATOM (extends to END_ATOM; STARRED indicates whether there
5416 was a star after the atom) for later processing. */
5418 mark_matching_switches (const char *atom, const char *end_atom, int starred)
5421 int len = end_atom - atom;
5422 int plen = starred ? len : -1;
5424 for (i = 0; i < n_switches; i++)
5425 if (!strncmp (switches[i].part1, atom, len)
5426 && (starred || switches[i].part1[len] == '\0')
5427 && check_live_switch (i, plen))
5428 switches[i].ordering = 1;
5431 /* Inline subroutine of handle_braces. Process all the currently
5432 marked switches through give_switch, and clear the marks. */
5434 process_marked_switches (void)
5438 for (i = 0; i < n_switches; i++)
5439 if (switches[i].ordering == 1)
5441 switches[i].ordering = 0;
5446 /* Handle a %{ ... } construct. P points just inside the leading {.
5447 Returns a pointer one past the end of the brace block, or 0
5448 if we call do_spec_1 and that returns -1. */
5451 handle_braces (const char *p)
5453 const char *atom, *end_atom;
5454 const char *d_atom = NULL, *d_end_atom = NULL;
5461 bool a_must_be_last = false;
5462 bool ordered_set = false;
5463 bool disjunct_set = false;
5464 bool disj_matched = false;
5465 bool disj_starred = true;
5466 bool n_way_choice = false;
5467 bool n_way_matched = false;
5469 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
5476 /* Scan one "atom" (S in the description above of %{}, possibly
5477 with !, ., or * modifiers). */
5478 a_matched = a_is_suffix = a_is_starred = a_is_negated = false;
5482 p++, a_is_negated = true;
5486 p++, a_is_suffix = true;
5489 while (ISIDNUM(*p) || *p == '-' || *p == '+' || *p == '='
5490 || *p == ',' || *p == '.' || *p == '@')
5495 p++, a_is_starred = 1;
5498 if (*p == '&' || *p == '}')
5500 /* Substitute the switch(es) indicated by the current atom. */
5502 if (disjunct_set || n_way_choice || a_is_negated || a_is_suffix
5503 || atom == end_atom)
5506 mark_matching_switches (atom, end_atom, a_is_starred);
5509 process_marked_switches ();
5511 else if (*p == '|' || *p == ':')
5513 /* Substitute some text if the current atom appears as a switch
5515 disjunct_set = true;
5519 if (atom == end_atom)
5521 if (!n_way_choice || disj_matched || *p == '|'
5522 || a_is_negated || a_is_suffix || a_is_starred)
5525 /* An empty term may appear as the last choice of an
5526 N-way choice set; it means "otherwise". */
5527 a_must_be_last = true;
5528 disj_matched = !n_way_matched;
5529 disj_starred = false;
5533 if (a_is_suffix && a_is_starred)
5537 disj_starred = false;
5539 /* Don't bother testing this atom if we already have a
5541 if (!disj_matched && !n_way_matched)
5544 a_matched = input_suffix_matches (atom, end_atom);
5546 a_matched = switch_matches (atom, end_atom, a_is_starred);
5548 if (a_matched != a_is_negated)
5550 disj_matched = true;
5552 d_end_atom = end_atom;
5559 /* Found the body, that is, the text to substitute if the
5560 current disjunction matches. */
5561 p = process_brace_body (p + 1, d_atom, d_end_atom, disj_starred,
5562 disj_matched && !n_way_matched);
5566 /* If we have an N-way choice, reset state for the next
5570 n_way_choice = true;
5571 n_way_matched |= disj_matched;
5572 disj_matched = false;
5573 disj_starred = true;
5574 d_atom = d_end_atom = NULL;
5581 while (*p++ != '}');
5588 /* Subroutine of handle_braces. Scan and process a brace substitution body
5589 (X in the description of %{} syntax). P points one past the colon;
5590 ATOM and END_ATOM bracket the first atom which was found to be true
5591 (present) in the current disjunction; STARRED indicates whether all
5592 the atoms in the current disjunction were starred (for syntax validation);
5593 MATCHED indicates whether the disjunction matched or not, and therefore
5594 whether or not the body is to be processed through do_spec_1 or just
5595 skipped. Returns a pointer to the closing } or ;, or 0 if do_spec_1
5599 process_brace_body (const char *p, const char *atom, const char *end_atom,
5600 int starred, int matched)
5602 const char *body, *end_body;
5603 unsigned int nesting_level;
5604 bool have_subst = false;
5606 /* Locate the closing } or ;, honoring nested braces.
5607 Trim trailing whitespace. */
5616 if (!--nesting_level)
5619 else if (*p == ';' && nesting_level == 1)
5621 else if (*p == '%' && p[1] == '*' && nesting_level == 1)
5623 else if (*p == '\0')
5629 while (end_body[-1] == ' ' || end_body[-1] == '\t')
5632 if (have_subst && !starred)
5637 /* Copy the substitution body to permanent storage and execute it.
5638 If have_subst is false, this is a simple matter of running the
5639 body through do_spec_1... */
5640 char *string = save_string (body, end_body - body);
5643 if (do_spec_1 (string, 0, NULL) < 0)
5648 /* ... but if have_subst is true, we have to process the
5649 body once for each matching switch, with %* set to the
5650 variant part of the switch. */
5651 unsigned int hard_match_len = end_atom - atom;
5654 for (i = 0; i < n_switches; i++)
5655 if (!strncmp (switches[i].part1, atom, hard_match_len)
5656 && check_live_switch (i, hard_match_len))
5658 if (do_spec_1 (string, 0,
5659 &switches[i].part1[hard_match_len]) < 0)
5661 /* Pass any arguments this switch has. */
5663 suffix_subst = NULL;
5671 /* Return 0 iff switch number SWITCHNUM is obsoleted by a later switch
5672 on the command line. PREFIX_LENGTH is the length of XXX in an {XXX*}
5673 spec, or -1 if either exact match or %* is used.
5675 A -O switch is obsoleted by a later -O switch. A -f, -m, or -W switch
5676 whose value does not begin with "no-" is obsoleted by the same value
5677 with the "no-", similarly for a switch with the "no-" prefix. */
5680 check_live_switch (int switchnum, int prefix_length)
5682 const char *name = switches[switchnum].part1;
5685 /* In the common case of {<at-most-one-letter>*}, a negating
5686 switch would always match, so ignore that case. We will just
5687 send the conflicting switches to the compiler phase. */
5688 if (prefix_length >= 0 && prefix_length <= 1)
5691 /* If we already processed this switch and determined if it was
5692 live or not, return our past determination. */
5693 if (switches[switchnum].live_cond != 0)
5694 return switches[switchnum].live_cond > 0;
5696 /* Now search for duplicate in a manner that depends on the name. */
5700 for (i = switchnum + 1; i < n_switches; i++)
5701 if (switches[i].part1[0] == 'O')
5703 switches[switchnum].validated = 1;
5704 switches[switchnum].live_cond = SWITCH_FALSE;
5709 case 'W': case 'f': case 'm':
5710 if (! strncmp (name + 1, "no-", 3))
5712 /* We have Xno-YYY, search for XYYY. */
5713 for (i = switchnum + 1; i < n_switches; i++)
5714 if (switches[i].part1[0] == name[0]
5715 && ! strcmp (&switches[i].part1[1], &name[4]))
5717 switches[switchnum].validated = 1;
5718 switches[switchnum].live_cond = SWITCH_FALSE;
5724 /* We have XYYY, search for Xno-YYY. */
5725 for (i = switchnum + 1; i < n_switches; i++)
5726 if (switches[i].part1[0] == name[0]
5727 && switches[i].part1[1] == 'n'
5728 && switches[i].part1[2] == 'o'
5729 && switches[i].part1[3] == '-'
5730 && !strcmp (&switches[i].part1[4], &name[1]))
5732 switches[switchnum].validated = 1;
5733 switches[switchnum].live_cond = SWITCH_FALSE;
5740 /* Otherwise the switch is live. */
5741 switches[switchnum].live_cond = SWITCH_LIVE;
5745 /* Pass a switch to the current accumulating command
5746 in the same form that we received it.
5747 SWITCHNUM identifies the switch; it is an index into
5748 the vector of switches gcc received, which is `switches'.
5749 This cannot fail since it never finishes a command line.
5751 If OMIT_FIRST_WORD is nonzero, then we omit .part1 of the argument. */
5754 give_switch (int switchnum, int omit_first_word)
5756 if (switches[switchnum].live_cond == SWITCH_IGNORE)
5759 if (!omit_first_word)
5761 do_spec_1 ("-", 0, NULL);
5762 do_spec_1 (switches[switchnum].part1, 1, NULL);
5765 if (switches[switchnum].args != 0)
5768 for (p = switches[switchnum].args; *p; p++)
5770 const char *arg = *p;
5772 do_spec_1 (" ", 0, NULL);
5775 unsigned length = strlen (arg);
5778 while (length-- && !IS_DIR_SEPARATOR (arg[length]))
5779 if (arg[length] == '.')
5781 ((char *)arg)[length] = 0;
5785 do_spec_1 (arg, 1, NULL);
5787 ((char *)arg)[length] = '.';
5788 do_spec_1 (suffix_subst, 1, NULL);
5791 do_spec_1 (arg, 1, NULL);
5795 do_spec_1 (" ", 0, NULL);
5796 switches[switchnum].validated = 1;
5799 /* Search for a file named NAME trying various prefixes including the
5800 user's -B prefix and some standard ones.
5801 Return the absolute file name found. If nothing is found, return NAME. */
5804 find_file (const char *name)
5808 /* Try multilib_dir if it is defined. */
5809 if (multilib_os_dir != NULL)
5811 newname = find_a_file (&startfile_prefixes, name, R_OK, 1);
5813 /* If we don't find it in the multi library dir, then fall
5814 through and look for it in the normal places. */
5815 if (newname != NULL)
5819 newname = find_a_file (&startfile_prefixes, name, R_OK, 0);
5820 return newname ? newname : name;
5823 /* Determine whether a directory exists. If LINKER, return 0 for
5824 certain fixed names not needed by the linker. If not LINKER, it is
5825 only important to return 0 if the host machine has a small ARG_MAX
5829 is_directory (const char *path1, const char *path2, int linker)
5831 int len1 = strlen (path1);
5832 int len2 = strlen (path2);
5833 char *path = alloca (3 + len1 + len2);
5837 #ifndef SMALL_ARG_MAX
5842 /* Construct the path from the two parts. Ensure the string ends with "/.".
5843 The resulting path will be a directory even if the given path is a
5845 memcpy (path, path1, len1);
5846 memcpy (path + len1, path2, len2);
5847 cp = path + len1 + len2;
5848 if (!IS_DIR_SEPARATOR (cp[-1]))
5849 *cp++ = DIR_SEPARATOR;
5853 /* Exclude directories that the linker is known to search. */
5856 && strcmp (path, concat (dir_separator_str, "lib",
5857 dir_separator_str, ".", NULL)) == 0)
5859 && strcmp (path, concat (dir_separator_str, "usr",
5860 dir_separator_str, "lib",
5861 dir_separator_str, ".", NULL)) == 0)))
5864 return (stat (path, &st) >= 0 && S_ISDIR (st.st_mode));
5867 /* Set up the various global variables to indicate that we're processing
5868 the input file named FILENAME. */
5871 set_input (const char *filename)
5875 input_filename = filename;
5876 input_filename_length = strlen (input_filename);
5878 input_basename = input_filename;
5879 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
5880 /* Skip drive name so 'x:foo' is handled properly. */
5881 if (input_basename[1] == ':')
5882 input_basename += 2;
5884 for (p = input_basename; *p; p++)
5885 if (IS_DIR_SEPARATOR (*p))
5886 input_basename = p + 1;
5888 /* Find a suffix starting with the last period,
5889 and set basename_length to exclude that suffix. */
5890 basename_length = strlen (input_basename);
5891 suffixed_basename_length = basename_length;
5892 p = input_basename + basename_length;
5893 while (p != input_basename && *p != '.')
5895 if (*p == '.' && p != input_basename)
5897 basename_length = p - input_basename;
5898 input_suffix = p + 1;
5903 /* If a spec for 'g', 'u', or 'U' is seen with -save-temps then
5904 we will need to do a stat on the input_filename. The
5905 INPUT_STAT_SET signals that the stat is needed. */
5909 /* On fatal signals, delete all the temporary files. */
5912 fatal_error (int signum)
5914 signal (signum, SIG_DFL);
5915 delete_failure_queue ();
5916 delete_temp_files ();
5917 /* Get the same signal again, this time not handled,
5918 so its normal effect occurs. */
5919 kill (getpid (), signum);
5922 extern int main (int, const char **);
5925 main (int argc, const char **argv)
5929 int linker_was_run = 0;
5930 int num_linker_inputs = 0;
5931 char *explicit_link_files;
5934 struct user_specs *uptr;
5936 p = argv[0] + strlen (argv[0]);
5937 while (p != argv[0] && !IS_DIR_SEPARATOR (p[-1]))
5941 xmalloc_set_program_name (programname);
5943 #ifdef GCC_DRIVER_HOST_INITIALIZATION
5944 /* Perform host dependent initialization when needed. */
5945 GCC_DRIVER_HOST_INITIALIZATION;
5948 gcc_init_libintl ();
5950 if (signal (SIGINT, SIG_IGN) != SIG_IGN)
5951 signal (SIGINT, fatal_error);
5953 if (signal (SIGHUP, SIG_IGN) != SIG_IGN)
5954 signal (SIGHUP, fatal_error);
5956 if (signal (SIGTERM, SIG_IGN) != SIG_IGN)
5957 signal (SIGTERM, fatal_error);
5959 if (signal (SIGPIPE, SIG_IGN) != SIG_IGN)
5960 signal (SIGPIPE, fatal_error);
5963 /* We *MUST* set SIGCHLD to SIG_DFL so that the wait4() call will
5964 receive the signal. A different setting is inheritable */
5965 signal (SIGCHLD, SIG_DFL);
5968 /* Allocate the argument vector. */
5971 obstack_init (&obstack);
5973 /* Build multilib_select, et. al from the separate lines that make up each
5974 multilib selection. */
5976 const char *const *q = multilib_raw;
5979 obstack_init (&multilib_obstack);
5980 while ((p = *q++) != (char *) 0)
5981 obstack_grow (&multilib_obstack, p, strlen (p));
5983 obstack_1grow (&multilib_obstack, 0);
5984 multilib_select = obstack_finish (&multilib_obstack);
5986 q = multilib_matches_raw;
5987 while ((p = *q++) != (char *) 0)
5988 obstack_grow (&multilib_obstack, p, strlen (p));
5990 obstack_1grow (&multilib_obstack, 0);
5991 multilib_matches = obstack_finish (&multilib_obstack);
5993 q = multilib_exclusions_raw;
5994 while ((p = *q++) != (char *) 0)
5995 obstack_grow (&multilib_obstack, p, strlen (p));
5997 obstack_1grow (&multilib_obstack, 0);
5998 multilib_exclusions = obstack_finish (&multilib_obstack);
6001 for (i = 0; i < ARRAY_SIZE (multilib_defaults_raw); i++)
6004 obstack_1grow (&multilib_obstack, ' ');
6005 obstack_grow (&multilib_obstack,
6006 multilib_defaults_raw[i],
6007 strlen (multilib_defaults_raw[i]));
6011 obstack_1grow (&multilib_obstack, 0);
6012 multilib_defaults = obstack_finish (&multilib_obstack);
6015 /* Set up to remember the pathname of gcc and any options
6016 needed for collect. We use argv[0] instead of programname because
6017 we need the complete pathname. */
6018 obstack_init (&collect_obstack);
6019 obstack_grow (&collect_obstack, "COLLECT_GCC=", sizeof ("COLLECT_GCC=") - 1);
6020 obstack_grow (&collect_obstack, argv[0], strlen (argv[0]) + 1);
6021 putenv (obstack_finish (&collect_obstack));
6023 #ifdef INIT_ENVIRONMENT
6024 /* Set up any other necessary machine specific environment variables. */
6025 putenv (INIT_ENVIRONMENT);
6028 /* Make a table of what switches there are (switches, n_switches).
6029 Make a table of specified input files (infiles, n_infiles).
6030 Decode switches that are handled locally. */
6032 process_command (argc, argv);
6034 /* Initialize the vector of specs to just the default.
6035 This means one element containing 0s, as a terminator. */
6037 compilers = xmalloc (sizeof default_compilers);
6038 memcpy (compilers, default_compilers, sizeof default_compilers);
6039 n_compilers = n_default_compilers;
6041 /* Read specs from a file if there is one. */
6043 machine_suffix = concat (spec_machine, dir_separator_str,
6044 spec_version, dir_separator_str, NULL);
6045 just_machine_suffix = concat (spec_machine, dir_separator_str, NULL);
6047 specs_file = find_a_file (&startfile_prefixes, "specs", R_OK, 0);
6048 /* Read the specs file unless it is a default one. */
6049 if (specs_file != 0 && strcmp (specs_file, "specs"))
6050 read_specs (specs_file, TRUE);
6054 /* We need to check standard_exec_prefix/just_machine_suffix/specs
6055 for any override of as, ld and libraries. */
6056 specs_file = alloca (strlen (standard_exec_prefix)
6057 + strlen (just_machine_suffix) + sizeof ("specs"));
6059 strcpy (specs_file, standard_exec_prefix);
6060 strcat (specs_file, just_machine_suffix);
6061 strcat (specs_file, "specs");
6062 if (access (specs_file, R_OK) == 0)
6063 read_specs (specs_file, TRUE);
6065 /* Process any configure-time defaults specified for the command line
6066 options, via OPTION_DEFAULT_SPECS. */
6067 for (i = 0; i < ARRAY_SIZE (option_default_specs); i++)
6068 do_option_spec (option_default_specs[i].name,
6069 option_default_specs[i].spec);
6071 /* Process DRIVER_SELF_SPECS, adding any new options to the end
6072 of the command line. */
6074 for (i = 0; i < ARRAY_SIZE (driver_self_specs); i++)
6075 do_self_spec (driver_self_specs[i]);
6077 /* If not cross-compiling, look for executables in the standard
6079 if (*cross_compile == '0')
6081 if (*md_exec_prefix)
6083 add_prefix (&exec_prefixes, md_exec_prefix, "GCC",
6084 PREFIX_PRIORITY_LAST, 0, NULL, 0);
6088 /* Process sysroot_suffix_spec. */
6089 if (*sysroot_suffix_spec != 0
6090 && do_spec_2 (sysroot_suffix_spec) == 0)
6092 if (argbuf_index > 1)
6093 error ("spec failure: more than one arg to SYSROOT_SUFFIX_SPEC.");
6094 else if (argbuf_index == 1)
6095 target_sysroot_suffix = xstrdup (argbuf[argbuf_index -1]);
6098 /* Process sysroot_hdrs_suffix_spec. */
6099 if (*sysroot_hdrs_suffix_spec != 0
6100 && do_spec_2 (sysroot_hdrs_suffix_spec) == 0)
6102 if (argbuf_index > 1)
6103 error ("spec failure: more than one arg to SYSROOT_HEADERS_SUFFIX_SPEC.");
6104 else if (argbuf_index == 1)
6105 target_sysroot_hdrs_suffix = xstrdup (argbuf[argbuf_index -1]);
6108 /* Look for startfiles in the standard places. */
6109 if (*startfile_prefix_spec != 0
6110 && do_spec_2 (startfile_prefix_spec) == 0
6111 && do_spec_1 (" ", 0, NULL) == 0)
6114 for (ndx = 0; ndx < argbuf_index; ndx++)
6115 add_sysrooted_prefix (&startfile_prefixes, argbuf[ndx], "BINUTILS",
6116 PREFIX_PRIORITY_LAST, 0, NULL, 1);
6118 /* We should eventually get rid of all these and stick to
6119 startfile_prefix_spec exclusively. */
6120 else if (*cross_compile == '0' || target_system_root)
6122 if (*md_exec_prefix)
6123 add_sysrooted_prefix (&startfile_prefixes, md_exec_prefix, "GCC",
6124 PREFIX_PRIORITY_LAST, 0, NULL, 1);
6126 if (*md_startfile_prefix)
6127 add_sysrooted_prefix (&startfile_prefixes, md_startfile_prefix,
6128 "GCC", PREFIX_PRIORITY_LAST, 0, NULL, 1);
6130 if (*md_startfile_prefix_1)
6131 add_sysrooted_prefix (&startfile_prefixes, md_startfile_prefix_1,
6132 "GCC", PREFIX_PRIORITY_LAST, 0, NULL, 1);
6134 /* If standard_startfile_prefix is relative, base it on
6135 standard_exec_prefix. This lets us move the installed tree
6136 as a unit. If GCC_EXEC_PREFIX is defined, base
6137 standard_startfile_prefix on that as well.
6139 If the prefix is relative, only search it for native compilers;
6140 otherwise we will search a directory containing host libraries. */
6141 if (IS_ABSOLUTE_PATH (standard_startfile_prefix))
6142 add_sysrooted_prefix (&startfile_prefixes,
6143 standard_startfile_prefix, "BINUTILS",
6144 PREFIX_PRIORITY_LAST, 0, NULL, 1);
6145 else if (*cross_compile == '0')
6147 if (gcc_exec_prefix)
6148 add_prefix (&startfile_prefixes,
6149 concat (gcc_exec_prefix, machine_suffix,
6150 standard_startfile_prefix, NULL),
6151 NULL, PREFIX_PRIORITY_LAST, 0, NULL, 1);
6152 add_prefix (&startfile_prefixes,
6153 concat (standard_exec_prefix,
6155 standard_startfile_prefix, NULL),
6156 NULL, PREFIX_PRIORITY_LAST, 0, NULL, 1);
6159 add_sysrooted_prefix (&startfile_prefixes, standard_startfile_prefix_1,
6160 "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL, 1);
6161 add_sysrooted_prefix (&startfile_prefixes, standard_startfile_prefix_2,
6162 "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL, 1);
6163 #if 0 /* Can cause surprises, and one can use -B./ instead. */
6164 add_prefix (&startfile_prefixes, "./", NULL,
6165 PREFIX_PRIORITY_LAST, 1, NULL, 0);
6169 /* Process any user specified specs in the order given on the command
6171 for (uptr = user_specs_head; uptr; uptr = uptr->next)
6173 char *filename = find_a_file (&startfile_prefixes, uptr->filename,
6175 read_specs (filename ? filename : uptr->filename, FALSE);
6178 /* If we have a GCC_EXEC_PREFIX envvar, modify it for cpp's sake. */
6179 if (gcc_exec_prefix)
6180 gcc_exec_prefix = concat (gcc_exec_prefix, spec_machine, dir_separator_str,
6181 spec_version, dir_separator_str, NULL);
6183 /* Now we have the specs.
6184 Set the `valid' bits for switches that match anything in any spec. */
6186 validate_all_switches ();
6188 /* Now that we have the switches and the specs, set
6189 the subdirectory based on the options. */
6190 set_multilib_dir ();
6192 /* Warn about any switches that no pass was interested in. */
6194 for (i = 0; (int) i < n_switches; i++)
6195 if (! switches[i].validated)
6196 error ("unrecognized option `-%s'", switches[i].part1);
6198 /* Obey some of the options. */
6200 if (print_search_dirs)
6202 printf (_("install: %s%s\n"), standard_exec_prefix, machine_suffix);
6203 printf (_("programs: %s\n"), build_search_list (&exec_prefixes, "", 0));
6204 printf (_("libraries: %s\n"), build_search_list (&startfile_prefixes, "", 0));
6208 if (print_file_name)
6210 printf ("%s\n", find_file (print_file_name));
6214 if (print_prog_name)
6216 char *newname = find_a_file (&exec_prefixes, print_prog_name, X_OK, 0);
6217 printf ("%s\n", (newname ? newname : print_prog_name));
6221 if (print_multi_lib)
6223 print_multilib_info ();
6227 if (print_multi_directory)
6229 if (multilib_dir == NULL)
6232 printf ("%s\n", multilib_dir);
6236 if (print_multi_os_directory)
6238 if (multilib_os_dir == NULL)
6241 printf ("%s\n", multilib_os_dir);
6245 if (target_help_flag)
6247 /* Print if any target specific options. */
6249 /* We do not exit here. Instead we have created a fake input file
6250 called 'target-dummy' which needs to be compiled, and we pass this
6251 on to the various sub-processes, along with the --target-help
6255 if (print_help_list)
6261 printf (_("\nFor bug reporting instructions, please see:\n"));
6262 printf ("%s.\n", bug_report_url);
6267 /* We do not exit here. Instead we have created a fake input file
6268 called 'help-dummy' which needs to be compiled, and we pass this
6269 on the various sub-processes, along with the --help switch. */
6277 notice ("Configured with: %s\n", configuration_arguments);
6279 #ifdef THREAD_MODEL_SPEC
6280 /* We could have defined THREAD_MODEL_SPEC to "%*" by default,
6281 but there's no point in doing all this processing just to get
6282 thread_model back. */
6283 obstack_init (&obstack);
6284 do_spec_1 (THREAD_MODEL_SPEC, 0, thread_model);
6285 obstack_1grow (&obstack, '\0');
6286 thrmod = obstack_finish (&obstack);
6288 thrmod = thread_model;
6291 notice ("Thread model: %s\n", thrmod);
6293 /* compiler_version is truncated at the first space when initialized
6294 from version string, so truncate version_string at the first space
6295 before comparing. */
6296 for (n = 0; version_string[n]; n++)
6297 if (version_string[n] == ' ')
6300 if (! strncmp (version_string, compiler_version, n)
6301 && compiler_version[n] == 0)
6302 notice ("gcc version %s\n", version_string);
6304 notice ("gcc driver version %s executing gcc version %s\n",
6305 version_string, compiler_version);
6311 if (n_infiles == added_libraries)
6312 fatal ("no input files");
6314 /* Make a place to record the compiler output file names
6315 that correspond to the input files. */
6318 i += lang_specific_extra_outfiles;
6319 outfiles = xcalloc (i, sizeof (char *));
6321 /* Record which files were specified explicitly as link input. */
6323 explicit_link_files = xcalloc (1, n_infiles);
6327 int lang_n_infiles = 0;
6328 for (i = 0; (int) i < n_infiles; i++)
6330 const char *name = infiles[i].name;
6331 struct compiler *compiler
6332 = lookup_compiler (name, strlen (name), infiles[i].language);
6333 if (compiler == NULL)
6334 error ("%s: linker input file unused because linking not done",
6336 else if (lang_n_infiles > 0 && compiler != input_file_compiler)
6337 fatal ("cannot specify -o with -c or -S and multiple languages");
6341 input_file_compiler = compiler;
6346 for (i = 0; (int) i < (combine_inputs ? 1 : n_infiles); i++)
6348 int this_file_error = 0;
6350 /* Tell do_spec what to substitute for %i. */
6352 input_file_number = i;
6353 set_input (infiles[i].name);
6355 /* Use the same thing in %o, unless cp->spec says otherwise. */
6357 outfiles[i] = input_filename;
6359 /* Figure out which compiler from the file's suffix. */
6361 if (! combine_inputs)
6363 = lookup_compiler (infiles[i].name, input_filename_length,
6364 infiles[i].language);
6366 if (input_file_compiler)
6368 /* Ok, we found an applicable compiler. Run its spec. */
6370 if (input_file_compiler->spec[0] == '#')
6372 error ("%s: %s compiler not installed on this system",
6373 input_filename, &input_file_compiler->spec[1]);
6374 this_file_error = 1;
6378 value = do_spec (input_file_compiler->spec);
6380 this_file_error = 1;
6384 /* If this file's name does not contain a recognized suffix,
6385 record it as explicit linker input. */
6388 explicit_link_files[i] = 1;
6390 /* Clear the delete-on-failure queue, deleting the files in it
6391 if this compilation failed. */
6393 if (this_file_error)
6395 delete_failure_queue ();
6398 /* If this compilation succeeded, don't delete those files later. */
6399 clear_failure_queue ();
6402 /* Reset the output file name to the first input file name, for use
6403 with %b in LINK_SPEC on a target that prefers not to emit a.out
6406 set_input (infiles[0].name);
6408 if (error_count == 0)
6410 /* Make sure INPUT_FILE_NUMBER points to first available open
6412 input_file_number = n_infiles;
6413 if (lang_specific_pre_link ())
6417 /* Determine if there are any linker input files. */
6418 num_linker_inputs = 0;
6419 for (i = 0; (int) i < n_infiles; i++)
6420 if (explicit_link_files[i] || outfiles[i] != NULL)
6421 num_linker_inputs++;
6423 /* Run ld to link all the compiler output files. */
6425 if (num_linker_inputs > 0 && error_count == 0)
6427 int tmp = execution_count;
6429 /* We'll use ld if we can't find collect2. */
6430 if (! strcmp (linker_name_spec, "collect2"))
6432 char *s = find_a_file (&exec_prefixes, "collect2", X_OK, 0);
6434 linker_name_spec = "ld";
6436 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
6438 putenv_from_prefixes (&exec_prefixes, "COMPILER_PATH");
6439 putenv_from_prefixes (&startfile_prefixes, LIBRARY_PATH_ENV);
6441 value = do_spec (link_command_spec);
6444 linker_was_run = (tmp != execution_count);
6447 /* If options said don't run linker,
6448 complain about input files to be given to the linker. */
6450 if (! linker_was_run && error_count == 0)
6451 for (i = 0; (int) i < n_infiles; i++)
6452 if (explicit_link_files[i])
6453 error ("%s: linker input file unused because linking not done",
6456 /* Delete some or all of the temporary files we made. */
6459 delete_failure_queue ();
6460 delete_temp_files ();
6462 if (print_help_list)
6464 printf (("\nFor bug reporting instructions, please see:\n"));
6465 printf ("%s\n", bug_report_url);
6468 return (signal_count != 0 ? 2
6469 : error_count > 0 ? (pass_exit_codes ? greatest_status : 1)
6473 /* Find the proper compilation spec for the file name NAME,
6474 whose length is LENGTH. LANGUAGE is the specified language,
6475 or 0 if this file is to be passed to the linker. */
6477 static struct compiler *
6478 lookup_compiler (const char *name, size_t length, const char *language)
6480 struct compiler *cp;
6482 /* If this was specified by the user to be a linker input, indicate that. */
6483 if (language != 0 && language[0] == '*')
6486 /* Otherwise, look for the language, if one is spec'd. */
6489 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6490 if (cp->suffix[0] == '@' && !strcmp (cp->suffix + 1, language))
6493 error ("language %s not recognized", language);
6497 /* Look for a suffix. */
6498 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6500 if (/* The suffix `-' matches only the file name `-'. */
6501 (!strcmp (cp->suffix, "-") && !strcmp (name, "-"))
6502 || (strlen (cp->suffix) < length
6503 /* See if the suffix matches the end of NAME. */
6504 && !strcmp (cp->suffix,
6505 name + length - strlen (cp->suffix))
6510 #if defined (OS2) ||defined (HAVE_DOS_BASED_FILE_SYSTEM)
6511 /* look again, but case-insensitively this time. */
6513 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6515 if (/* The suffix `-' matches only the file name `-'. */
6516 (!strcmp (cp->suffix, "-") && !strcmp (name, "-"))
6517 || (strlen (cp->suffix) < length
6518 /* See if the suffix matches the end of NAME. */
6519 && ((!strcmp (cp->suffix,
6520 name + length - strlen (cp->suffix))
6521 || !strpbrk (cp->suffix, "ABCDEFGHIJKLMNOPQRSTUVWXYZ"))
6522 && !strcasecmp (cp->suffix,
6523 name + length - strlen (cp->suffix)))
6529 if (cp >= compilers)
6531 if (cp->spec[0] != '@')
6532 /* A non-alias entry: return it. */
6535 /* An alias entry maps a suffix to a language.
6536 Search for the language; pass 0 for NAME and LENGTH
6537 to avoid infinite recursion if language not found. */
6538 return lookup_compiler (NULL, 0, cp->spec + 1);
6544 save_string (const char *s, int len)
6546 char *result = xmalloc (len + 1);
6548 memcpy (result, s, len);
6554 pfatal_with_name (const char *name)
6556 perror_with_name (name);
6557 delete_temp_files ();
6562 perror_with_name (const char *name)
6564 error ("%s: %s", name, xstrerror (errno));
6568 pfatal_pexecute (const char *errmsg_fmt, const char *errmsg_arg)
6572 int save_errno = errno;
6574 /* Space for trailing '\0' is in %s. */
6575 char *msg = xmalloc (strlen (errmsg_fmt) + strlen (errmsg_arg));
6576 sprintf (msg, errmsg_fmt, errmsg_arg);
6582 pfatal_with_name (errmsg_fmt);
6585 /* Output an error message and exit. */
6590 fatal ("internal gcc abort");
6593 /* Output an error message and exit. */
6596 fatal (const char *msgid, ...)
6600 va_start (ap, msgid);
6602 fprintf (stderr, "%s: ", programname);
6603 vfprintf (stderr, _(msgid), ap);
6605 fprintf (stderr, "\n");
6606 delete_temp_files ();
6611 error (const char *msgid, ...)
6615 va_start (ap, msgid);
6616 fprintf (stderr, "%s: ", programname);
6617 vfprintf (stderr, _(msgid), ap);
6620 fprintf (stderr, "\n");
6624 notice (const char *msgid, ...)
6628 va_start (ap, msgid);
6629 vfprintf (stderr, _(msgid), ap);
6634 validate_switches_from_spec (const char *spec)
6636 const char *p = spec;
6639 if (c == '%' && (*p == '{' || *p == '<' || (*p == 'W' && *++p == '{')))
6640 /* We have a switch spec. */
6641 p = validate_switches (p + 1);
6645 validate_all_switches (void)
6647 struct compiler *comp;
6648 struct spec_list *spec;
6650 for (comp = compilers; comp->spec; comp++)
6651 validate_switches_from_spec (comp->spec);
6653 /* Look through the linked list of specs read from the specs file. */
6654 for (spec = specs; spec; spec = spec->next)
6655 validate_switches_from_spec (*spec->ptr_spec);
6657 validate_switches_from_spec (link_command_spec);
6660 /* Look at the switch-name that comes after START
6661 and mark as valid all supplied switches that match it. */
6664 validate_switches (const char *start)
6666 const char *p = start;
6670 bool suffix = false;
6671 bool starred = false;
6673 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
6686 while (ISIDNUM (*p) || *p == '-' || *p == '+' || *p == '='
6687 || *p == ',' || *p == '.' || *p == '@')
6692 starred = true, p++;
6698 /* Mark all matching switches as valid. */
6699 for (i = 0; i < n_switches; i++)
6700 if (!strncmp (switches[i].part1, atom, len)
6701 && (starred || switches[i].part1[len] == 0))
6702 switches[i].validated = 1;
6706 if (*p && (p[-1] == '|' || p[-1] == '&'))
6709 if (*p && p[-1] == ':')
6711 while (*p && *p != ';' && *p != '}')
6716 if (*p == '{' || *p == '<')
6717 p = validate_switches (p+1);
6718 else if (p[0] == 'W' && p[1] == '{')
6719 p = validate_switches (p+2);
6726 if (*p && p[-1] == ';')
6740 static struct mdswitchstr *mdswitches;
6741 static int n_mdswitches;
6743 /* Check whether a particular argument was used. The first time we
6744 canonicalize the switches to keep only the ones we care about. */
6747 used_arg (const char *p, int len)
6752 const char *replace;
6757 static struct mswitchstr *mswitches;
6758 static int n_mswitches;
6763 struct mswitchstr *matches;
6767 /* Break multilib_matches into the component strings of string
6768 and replacement string. */
6769 for (q = multilib_matches; *q != '\0'; q++)
6773 matches = alloca ((sizeof (struct mswitchstr)) * cnt);
6775 q = multilib_matches;
6785 matches[i].len = q - matches[i].str;
6787 matches[i].replace = ++q;
6788 while (*q != ';' && *q != '\0')
6794 matches[i].rep_len = q - matches[i].replace;
6800 /* Now build a list of the replacement string for switches that we care
6801 about. Make sure we allocate at least one entry. This prevents
6802 xmalloc from calling fatal, and prevents us from re-executing this
6805 = xmalloc (sizeof (struct mswitchstr)
6806 * (n_mdswitches + (n_switches ? n_switches : 1)));
6807 for (i = 0; i < n_switches; i++)
6809 int xlen = strlen (switches[i].part1);
6810 for (j = 0; j < cnt; j++)
6811 if (xlen == matches[j].len
6812 && ! strncmp (switches[i].part1, matches[j].str, xlen))
6814 mswitches[n_mswitches].str = matches[j].replace;
6815 mswitches[n_mswitches].len = matches[j].rep_len;
6816 mswitches[n_mswitches].replace = (char *) 0;
6817 mswitches[n_mswitches].rep_len = 0;
6823 /* Add MULTILIB_DEFAULTS switches too, as long as they were not present
6824 on the command line nor any options mutually incompatible with
6826 for (i = 0; i < n_mdswitches; i++)
6830 for (q = multilib_options; *q != '\0'; q++)
6836 while (strncmp (q, mdswitches[i].str, mdswitches[i].len) != 0
6837 || strchr (" /", q[mdswitches[i].len]) == NULL)
6839 while (*q != ' ' && *q != '/' && *q != '\0')
6846 if (*q != ' ' && *q != '\0')
6848 while (*r != ' ' && *r != '\0')
6851 while (*q != ' ' && *q != '/' && *q != '\0')
6854 if (used_arg (r, q - r))
6859 mswitches[n_mswitches].str = mdswitches[i].str;
6860 mswitches[n_mswitches].len = mdswitches[i].len;
6861 mswitches[n_mswitches].replace = (char *) 0;
6862 mswitches[n_mswitches].rep_len = 0;
6875 for (i = 0; i < n_mswitches; i++)
6876 if (len == mswitches[i].len && ! strncmp (p, mswitches[i].str, len))
6883 default_arg (const char *p, int len)
6887 for (i = 0; i < n_mdswitches; i++)
6888 if (len == mdswitches[i].len && ! strncmp (p, mdswitches[i].str, len))
6894 /* Work out the subdirectory to use based on the options. The format of
6895 multilib_select is a list of elements. Each element is a subdirectory
6896 name followed by a list of options followed by a semicolon. The format
6897 of multilib_exclusions is the same, but without the preceding
6898 directory. First gcc will check the exclusions, if none of the options
6899 beginning with an exclamation point are present, and all of the other
6900 options are present, then we will ignore this completely. Passing
6901 that, gcc will consider each multilib_select in turn using the same
6902 rules for matching the options. If a match is found, that subdirectory
6906 set_multilib_dir (void)
6909 unsigned int this_path_len;
6910 const char *this_path, *this_arg;
6911 const char *start, *end;
6913 int ok, ndfltok, first;
6916 start = multilib_defaults;
6917 while (*start == ' ' || *start == '\t')
6919 while (*start != '\0')
6922 while (*start != ' ' && *start != '\t' && *start != '\0')
6924 while (*start == ' ' || *start == '\t')
6932 mdswitches = xmalloc (sizeof (struct mdswitchstr) * n_mdswitches);
6933 for (start = multilib_defaults; *start != '\0'; start = end + 1)
6935 while (*start == ' ' || *start == '\t')
6941 for (end = start + 1;
6942 *end != ' ' && *end != '\t' && *end != '\0'; end++)
6945 obstack_grow (&multilib_obstack, start, end - start);
6946 obstack_1grow (&multilib_obstack, 0);
6947 mdswitches[i].str = obstack_finish (&multilib_obstack);
6948 mdswitches[i++].len = end - start;
6955 p = multilib_exclusions;
6958 /* Ignore newlines. */
6965 /* Check the arguments. */
6979 while (*p != ' ' && *p != ';')
6986 if (*this_arg != '!')
6994 ok = used_arg (this_arg, p - this_arg);
7009 p = multilib_select;
7012 /* Ignore newlines. */
7019 /* Get the initial path. */
7027 this_path_len = p - this_path;
7029 /* Check the arguments. */
7045 while (*p != ' ' && *p != ';')
7052 if (*this_arg != '!')
7060 /* If this is a default argument, we can just ignore it.
7061 This is true even if this_arg begins with '!'. Beginning
7062 with '!' does not mean that this argument is necessarily
7063 inappropriate for this library: it merely means that
7064 there is a more specific library which uses this
7065 argument. If this argument is a default, we need not
7066 consider that more specific library. */
7067 ok = used_arg (this_arg, p - this_arg);
7074 if (default_arg (this_arg, p - this_arg))
7083 if (this_path_len != 1
7084 || this_path[0] != '.')
7086 char *new_multilib_dir = xmalloc (this_path_len + 1);
7089 strncpy (new_multilib_dir, this_path, this_path_len);
7090 new_multilib_dir[this_path_len] = '\0';
7091 q = strchr (new_multilib_dir, ':');
7094 multilib_dir = new_multilib_dir;
7101 const char *q = this_path, *end = this_path + this_path_len;
7103 while (q < end && *q != ':')
7107 char *new_multilib_os_dir = xmalloc (end - q);
7108 memcpy (new_multilib_os_dir, q + 1, end - q - 1);
7109 new_multilib_os_dir[end - q - 1] = '\0';
7110 multilib_os_dir = new_multilib_os_dir;
7118 if (multilib_dir == NULL && multilib_os_dir != NULL
7119 && strcmp (multilib_os_dir, ".") == 0)
7121 free ((char *) multilib_os_dir);
7122 multilib_os_dir = NULL;
7124 else if (multilib_dir != NULL && multilib_os_dir == NULL)
7125 multilib_os_dir = multilib_dir;
7128 /* Print out the multiple library subdirectory selection
7129 information. This prints out a series of lines. Each line looks
7130 like SUBDIRECTORY;@OPTION@OPTION, with as many options as is
7131 required. Only the desired options are printed out, the negative
7132 matches. The options are print without a leading dash. There are
7133 no spaces to make it easy to use the information in the shell.
7134 Each subdirectory is printed only once. This assumes the ordering
7135 generated by the genmultilib script. Also, we leave out ones that match
7139 print_multilib_info (void)
7141 const char *p = multilib_select;
7142 const char *last_path = 0, *this_path;
7144 unsigned int last_path_len = 0;
7149 /* Ignore newlines. */
7156 /* Get the initial path. */
7165 /* When --disable-multilib was used but target defines
7166 MULTILIB_OSDIRNAMES, entries starting with .: are there just
7167 to find multilib_os_dir, so skip them from output. */
7168 if (this_path[0] == '.' && this_path[1] == ':')
7171 /* Check for matches with the multilib_exclusions. We don't bother
7172 with the '!' in either list. If any of the exclusion rules match
7173 all of its options with the select rule, we skip it. */
7175 const char *e = multilib_exclusions;
7176 const char *this_arg;
7181 /* Ignore newlines. */
7188 /* Check the arguments. */
7205 while (*e != ' ' && *e != ';')
7216 int len = e - this_arg;
7223 while (*q != ' ' && *q != ';')
7230 if (! strncmp (arg, this_arg, (len < q - arg) ? q - arg : len) ||
7231 default_arg (this_arg, e - this_arg))
7261 /* If this is a duplicate, skip it. */
7262 skip = (last_path != 0 && (unsigned int) (p - this_path) == last_path_len
7263 && ! strncmp (last_path, this_path, last_path_len));
7265 last_path = this_path;
7266 last_path_len = p - this_path;
7269 /* If this directory requires any default arguments, we can skip
7270 it. We will already have printed a directory identical to
7271 this one which does not require that default argument. */
7289 while (*q != ' ' && *q != ';')
7297 && default_arg (arg, q - arg))
7312 for (p1 = last_path; p1 < p && *p1 != ':'; p1++)
7331 use_arg = *p != '!';
7336 while (*p != ' ' && *p != ';')
7351 /* If there are extra options, print them now. */
7352 if (multilib_extra && *multilib_extra)
7354 int print_at = TRUE;
7357 for (q = multilib_extra; *q != '\0'; q++)
7378 /* if-exists built-in spec function.
7380 Checks to see if the file specified by the absolute pathname in
7381 ARGS exists. Returns that pathname if found.
7383 The usual use for this function is to check for a library file
7384 (whose name has been expanded with %s). */
7387 if_exists_spec_function (int argc, const char **argv)
7389 /* Must have only one argument. */
7390 if (argc == 1 && IS_ABSOLUTE_PATH (argv[0]) && ! access (argv[0], R_OK))
7396 /* if-exists-else built-in spec function.
7398 This is like if-exists, but takes an additional argument which
7399 is returned if the first argument does not exist. */
7402 if_exists_else_spec_function (int argc, const char **argv)
7404 /* Must have exactly two arguments. */
7408 if (IS_ABSOLUTE_PATH (argv[0]) && ! access (argv[0], R_OK))