1 /* Compiler driver program that can handle many languages.
2 Copyright (C) 1987, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
3 1999, 2000, 2001, 2002, 2003, 2004 Free Software Foundation, Inc.
5 This file is part of GCC.
7 GCC is free software; you can redistribute it and/or modify it under
8 the terms of the GNU General Public License as published by the Free
9 Software Foundation; either version 2, or (at your option) any later
12 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
13 WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
17 You should have received a copy of the GNU General Public License
18 along with GCC; see the file COPYING. If not, write to the Free
19 Software Foundation, 59 Temple Place - Suite 330, Boston, MA
22 This paragraph is here to try to keep Sun CC from dying.
23 The number of chars here seems crucial!!!! */
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 #ifndef FREEBSD_NATIVE
1421 static const char *const standard_bindir_prefix = STANDARD_BINDIR_PREFIX;
1422 #endif /* not FREEBSD_NATIVE */
1424 static const char *standard_libexec_prefix = STANDARD_LIBEXEC_PREFIX;
1426 /* Subdirectory to use for locating libraries. Set by
1427 set_multilib_dir based on the compilation options. */
1429 static const char *multilib_dir;
1431 /* Subdirectory to use for locating libraries in OS conventions. Set by
1432 set_multilib_dir based on the compilation options. */
1434 static const char *multilib_os_dir;
1436 /* Structure to keep track of the specs that have been defined so far.
1437 These are accessed using %(specname) or %[specname] in a compiler
1442 /* The following 2 fields must be first */
1443 /* to allow EXTRA_SPECS to be initialized */
1444 const char *name; /* name of the spec. */
1445 const char *ptr; /* available ptr if no static pointer */
1447 /* The following fields are not initialized */
1448 /* by EXTRA_SPECS */
1449 const char **ptr_spec; /* pointer to the spec itself. */
1450 struct spec_list *next; /* Next spec in linked list. */
1451 int name_len; /* length of the name */
1452 int alloc_p; /* whether string was allocated */
1455 #define INIT_STATIC_SPEC(NAME,PTR) \
1456 { NAME, NULL, PTR, (struct spec_list *) 0, sizeof (NAME) - 1, 0 }
1458 /* List of statically defined specs. */
1459 static struct spec_list static_specs[] =
1461 INIT_STATIC_SPEC ("asm", &asm_spec),
1462 INIT_STATIC_SPEC ("asm_debug", &asm_debug),
1463 INIT_STATIC_SPEC ("asm_final", &asm_final_spec),
1464 INIT_STATIC_SPEC ("asm_options", &asm_options),
1465 INIT_STATIC_SPEC ("invoke_as", &invoke_as),
1466 INIT_STATIC_SPEC ("cpp", &cpp_spec),
1467 INIT_STATIC_SPEC ("cpp_options", &cpp_options),
1468 INIT_STATIC_SPEC ("cpp_debug_options", &cpp_debug_options),
1469 INIT_STATIC_SPEC ("cpp_unique_options", &cpp_unique_options),
1470 INIT_STATIC_SPEC ("trad_capable_cpp", &trad_capable_cpp),
1471 INIT_STATIC_SPEC ("cc1", &cc1_spec),
1472 INIT_STATIC_SPEC ("cc1_options", &cc1_options),
1473 INIT_STATIC_SPEC ("cc1plus", &cc1plus_spec),
1474 INIT_STATIC_SPEC ("link_gcc_c_sequence", &link_gcc_c_sequence_spec),
1475 INIT_STATIC_SPEC ("endfile", &endfile_spec),
1476 INIT_STATIC_SPEC ("link", &link_spec),
1477 INIT_STATIC_SPEC ("lib", &lib_spec),
1478 INIT_STATIC_SPEC ("libgcc", &libgcc_spec),
1479 INIT_STATIC_SPEC ("startfile", &startfile_spec),
1480 INIT_STATIC_SPEC ("switches_need_spaces", &switches_need_spaces),
1481 INIT_STATIC_SPEC ("cross_compile", &cross_compile),
1482 INIT_STATIC_SPEC ("version", &compiler_version),
1483 INIT_STATIC_SPEC ("multilib", &multilib_select),
1484 INIT_STATIC_SPEC ("multilib_defaults", &multilib_defaults),
1485 INIT_STATIC_SPEC ("multilib_extra", &multilib_extra),
1486 INIT_STATIC_SPEC ("multilib_matches", &multilib_matches),
1487 INIT_STATIC_SPEC ("multilib_exclusions", &multilib_exclusions),
1488 INIT_STATIC_SPEC ("multilib_options", &multilib_options),
1489 INIT_STATIC_SPEC ("linker", &linker_name_spec),
1490 INIT_STATIC_SPEC ("link_libgcc", &link_libgcc_spec),
1491 INIT_STATIC_SPEC ("md_exec_prefix", &md_exec_prefix),
1492 INIT_STATIC_SPEC ("md_startfile_prefix", &md_startfile_prefix),
1493 INIT_STATIC_SPEC ("md_startfile_prefix_1", &md_startfile_prefix_1),
1494 INIT_STATIC_SPEC ("startfile_prefix_spec", &startfile_prefix_spec),
1495 INIT_STATIC_SPEC ("sysroot_suffix_spec", &sysroot_suffix_spec),
1496 INIT_STATIC_SPEC ("sysroot_hdrs_suffix_spec", &sysroot_hdrs_suffix_spec),
1499 #ifdef EXTRA_SPECS /* additional specs needed */
1500 /* Structure to keep track of just the first two args of a spec_list.
1501 That is all that the EXTRA_SPECS macro gives us. */
1504 const char *const name;
1505 const char *const ptr;
1508 static const struct spec_list_1 extra_specs_1[] = { EXTRA_SPECS };
1509 static struct spec_list *extra_specs = (struct spec_list *) 0;
1512 /* List of dynamically allocates specs that have been defined so far. */
1514 static struct spec_list *specs = (struct spec_list *) 0;
1516 /* List of static spec functions. */
1518 static const struct spec_function static_spec_functions[] =
1520 { "if-exists", if_exists_spec_function },
1521 { "if-exists-else", if_exists_else_spec_function },
1525 static int processing_spec_function;
1527 /* Add appropriate libgcc specs to OBSTACK, taking into account
1528 various permutations of -shared-libgcc, -shared, and such. */
1530 #ifdef ENABLE_SHARED_LIBGCC
1532 init_gcc_specs (struct obstack *obstack, const char *shared_name,
1533 const char *static_name, const char *eh_name)
1537 buf = concat ("%{static|static-libgcc:", static_name, " ", eh_name,
1538 "}%{!static:%{!static-libgcc:",
1539 #ifdef HAVE_LD_AS_NEEDED
1540 "%{!shared-libgcc:", static_name,
1541 " --as-needed ", shared_name, " --no-as-needed}"
1542 "%{shared-libgcc:", shared_name, "%{!shared: ", static_name,
1545 "%{!shared:%{!shared-libgcc:", static_name, " ",
1546 eh_name, "}%{shared-libgcc:", shared_name, " ",
1547 static_name, "}}%{shared:",
1549 "%{shared-libgcc:", shared_name,
1550 "}%{!shared-libgcc:", static_name, "}",
1557 obstack_grow (obstack, buf, strlen (buf));
1560 #endif /* ENABLE_SHARED_LIBGCC */
1562 /* Initialize the specs lookup routines. */
1567 struct spec_list *next = (struct spec_list *) 0;
1568 struct spec_list *sl = (struct spec_list *) 0;
1572 return; /* Already initialized. */
1575 notice ("Using built-in specs.\n");
1578 extra_specs = xcalloc (sizeof (struct spec_list),
1579 ARRAY_SIZE (extra_specs_1));
1581 for (i = ARRAY_SIZE (extra_specs_1) - 1; i >= 0; i--)
1583 sl = &extra_specs[i];
1584 sl->name = extra_specs_1[i].name;
1585 sl->ptr = extra_specs_1[i].ptr;
1587 sl->name_len = strlen (sl->name);
1588 sl->ptr_spec = &sl->ptr;
1593 /* Initialize here, not in definition. The IRIX 6 O32 cc sometimes chokes
1594 on ?: in file-scope variable initializations. */
1595 asm_debug = ASM_DEBUG_SPEC;
1597 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--)
1599 sl = &static_specs[i];
1604 #ifdef ENABLE_SHARED_LIBGCC
1605 /* ??? If neither -shared-libgcc nor --static-libgcc was
1606 seen, then we should be making an educated guess. Some proposed
1607 heuristics for ELF include:
1609 (1) If "-Wl,--export-dynamic", then it's a fair bet that the
1610 program will be doing dynamic loading, which will likely
1611 need the shared libgcc.
1613 (2) If "-ldl", then it's also a fair bet that we're doing
1616 (3) For each ET_DYN we're linking against (either through -lfoo
1617 or /some/path/foo.so), check to see whether it or one of
1618 its dependencies depends on a shared libgcc.
1622 If the runtime is fixed to look for program headers instead
1623 of calling __register_frame_info at all, for each object,
1624 use the shared libgcc if any EH symbol referenced.
1626 If crtstuff is fixed to not invoke __register_frame_info
1627 automatically, for each object, use the shared libgcc if
1628 any non-empty unwind section found.
1630 Doing any of this probably requires invoking an external program to
1631 do the actual object file scanning. */
1633 const char *p = libgcc_spec;
1636 /* Transform the extant libgcc_spec into one that uses the shared libgcc
1637 when given the proper command line arguments. */
1640 if (in_sep && *p == '-' && strncmp (p, "-lgcc", 5) == 0)
1642 init_gcc_specs (&obstack,
1643 #ifdef NO_SHARED_LIBGCC_MULTILIB
1648 #ifdef USE_LIBUNWIND_EXCEPTIONS
1654 #ifdef USE_LIBUNWIND_EXCEPTIONS
1655 # ifdef HAVE_LD_STATIC_DYNAMIC
1656 " %{!static:-Bstatic} -lunwind %{!static:-Bdynamic}"
1666 else if (in_sep && *p == 'l' && strncmp (p, "libgcc.a%s", 10) == 0)
1668 /* Ug. We don't know shared library extensions. Hope that
1669 systems that use this form don't do shared libraries. */
1670 init_gcc_specs (&obstack,
1671 #ifdef NO_SHARED_LIBGCC_MULTILIB
1679 #ifdef USE_LIBUNWIND_EXCEPTIONS
1688 obstack_1grow (&obstack, *p);
1689 in_sep = (*p == ' ');
1694 obstack_1grow (&obstack, '\0');
1695 libgcc_spec = obstack_finish (&obstack);
1698 #ifdef USE_AS_TRADITIONAL_FORMAT
1699 /* Prepend "--traditional-format" to whatever asm_spec we had before. */
1701 static const char tf[] = "--traditional-format ";
1702 obstack_grow (&obstack, tf, sizeof(tf) - 1);
1703 obstack_grow0 (&obstack, asm_spec, strlen (asm_spec));
1704 asm_spec = obstack_finish (&obstack);
1708 /* Prepend LINK_EH_SPEC to whatever link_spec we had before. */
1709 obstack_grow (&obstack, LINK_EH_SPEC, sizeof(LINK_EH_SPEC) - 1);
1710 obstack_grow0 (&obstack, link_spec, strlen (link_spec));
1711 link_spec = obstack_finish (&obstack);
1717 /* Change the value of spec NAME to SPEC. If SPEC is empty, then the spec is
1718 removed; If the spec starts with a + then SPEC is added to the end of the
1722 set_spec (const char *name, const char *spec)
1724 struct spec_list *sl;
1725 const char *old_spec;
1726 int name_len = strlen (name);
1729 /* If this is the first call, initialize the statically allocated specs. */
1732 struct spec_list *next = (struct spec_list *) 0;
1733 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--)
1735 sl = &static_specs[i];
1742 /* See if the spec already exists. */
1743 for (sl = specs; sl; sl = sl->next)
1744 if (name_len == sl->name_len && !strcmp (sl->name, name))
1749 /* Not found - make it. */
1750 sl = xmalloc (sizeof (struct spec_list));
1751 sl->name = xstrdup (name);
1752 sl->name_len = name_len;
1753 sl->ptr_spec = &sl->ptr;
1755 *(sl->ptr_spec) = "";
1760 old_spec = *(sl->ptr_spec);
1761 *(sl->ptr_spec) = ((spec[0] == '+' && ISSPACE ((unsigned char)spec[1]))
1762 ? concat (old_spec, spec + 1, NULL)
1767 notice ("Setting spec %s to '%s'\n\n", name, *(sl->ptr_spec));
1770 /* Free the old spec. */
1771 if (old_spec && sl->alloc_p)
1772 free ((void *) old_spec);
1777 /* Accumulate a command (program name and args), and run it. */
1779 /* Vector of pointers to arguments in the current line of specifications. */
1781 static const char **argbuf;
1783 /* Number of elements allocated in argbuf. */
1785 static int argbuf_length;
1787 /* Number of elements in argbuf currently in use (containing args). */
1789 static int argbuf_index;
1791 /* This is the list of suffixes and codes (%g/%u/%U/%j) and the associated
1792 temp file. If the HOST_BIT_BUCKET is used for %j, no entry is made for
1795 static struct temp_name {
1796 const char *suffix; /* suffix associated with the code. */
1797 int length; /* strlen (suffix). */
1798 int unique; /* Indicates whether %g or %u/%U was used. */
1799 const char *filename; /* associated filename. */
1800 int filename_length; /* strlen (filename). */
1801 struct temp_name *next;
1804 /* Number of commands executed so far. */
1806 static int execution_count;
1808 /* Number of commands that exited with a signal. */
1810 static int signal_count;
1812 /* Name with which this program was invoked. */
1814 static const char *programname;
1816 /* Allocate the argument vector. */
1822 argbuf = xmalloc (argbuf_length * sizeof (const char *));
1825 /* Clear out the vector of arguments (after a command is executed). */
1833 /* Add one argument to the vector at the end.
1834 This is done when a space is seen or at the end of the line.
1835 If DELETE_ALWAYS is nonzero, the arg is a filename
1836 and the file should be deleted eventually.
1837 If DELETE_FAILURE is nonzero, the arg is a filename
1838 and the file should be deleted if this compilation fails. */
1841 store_arg (const char *arg, int delete_always, int delete_failure)
1843 if (argbuf_index + 1 == argbuf_length)
1844 argbuf = xrealloc (argbuf, (argbuf_length *= 2) * sizeof (const char *));
1846 argbuf[argbuf_index++] = arg;
1847 argbuf[argbuf_index] = 0;
1849 if (delete_always || delete_failure)
1850 record_temp_file (arg, delete_always, delete_failure);
1853 /* Load specs from a file name named FILENAME, replacing occurrences of
1854 various different types of line-endings, \r\n, \n\r and just \r, with
1858 load_specs (const char *filename)
1862 struct stat statbuf;
1869 notice ("Reading specs from %s\n", filename);
1871 /* Open and stat the file. */
1872 desc = open (filename, O_RDONLY, 0);
1874 pfatal_with_name (filename);
1875 if (stat (filename, &statbuf) < 0)
1876 pfatal_with_name (filename);
1878 /* Read contents of file into BUFFER. */
1879 buffer = xmalloc ((unsigned) statbuf.st_size + 1);
1880 readlen = read (desc, buffer, (unsigned) statbuf.st_size);
1882 pfatal_with_name (filename);
1883 buffer[readlen] = 0;
1886 specs = xmalloc (readlen + 1);
1888 for (buffer_p = buffer; buffer_p && *buffer_p; buffer_p++)
1894 if (buffer_p > buffer && *(buffer_p - 1) == '\n') /* \n\r */
1896 else if (*(buffer_p + 1) == '\n') /* \r\n */
1910 /* Read compilation specs from a file named FILENAME,
1911 replacing the default ones.
1913 A suffix which starts with `*' is a definition for
1914 one of the machine-specific sub-specs. The "suffix" should be
1915 *asm, *cc1, *cpp, *link, *startfile, etc.
1916 The corresponding spec is stored in asm_spec, etc.,
1917 rather than in the `compilers' vector.
1919 Anything invalid in the file is a fatal error. */
1922 read_specs (const char *filename, int main_p)
1927 buffer = load_specs (filename);
1929 /* Scan BUFFER for specs, putting them in the vector. */
1935 char *in, *out, *p1, *p2, *p3;
1937 /* Advance P in BUFFER to the next nonblank nocomment line. */
1938 p = skip_whitespace (p);
1942 /* Is this a special command that starts with '%'? */
1943 /* Don't allow this for the main specs file, since it would
1944 encourage people to overwrite it. */
1945 if (*p == '%' && !main_p)
1948 while (*p && *p != '\n')
1954 if (!strncmp (p1, "%include", sizeof ("%include") - 1)
1955 && (p1[sizeof "%include" - 1] == ' '
1956 || p1[sizeof "%include" - 1] == '\t'))
1960 p1 += sizeof ("%include");
1961 while (*p1 == ' ' || *p1 == '\t')
1964 if (*p1++ != '<' || p[-2] != '>')
1965 fatal ("specs %%include syntax malformed after %ld characters",
1966 (long) (p1 - buffer + 1));
1969 new_filename = find_a_file (&startfile_prefixes, p1, R_OK, 0);
1970 read_specs (new_filename ? new_filename : p1, FALSE);
1973 else if (!strncmp (p1, "%include_noerr", sizeof "%include_noerr" - 1)
1974 && (p1[sizeof "%include_noerr" - 1] == ' '
1975 || p1[sizeof "%include_noerr" - 1] == '\t'))
1979 p1 += sizeof "%include_noerr";
1980 while (*p1 == ' ' || *p1 == '\t')
1983 if (*p1++ != '<' || p[-2] != '>')
1984 fatal ("specs %%include syntax malformed after %ld characters",
1985 (long) (p1 - buffer + 1));
1988 new_filename = find_a_file (&startfile_prefixes, p1, R_OK, 0);
1990 read_specs (new_filename, FALSE);
1991 else if (verbose_flag)
1992 notice ("could not find specs file %s\n", p1);
1995 else if (!strncmp (p1, "%rename", sizeof "%rename" - 1)
1996 && (p1[sizeof "%rename" - 1] == ' '
1997 || p1[sizeof "%rename" - 1] == '\t'))
2000 struct spec_list *sl;
2001 struct spec_list *newsl;
2003 /* Get original name. */
2004 p1 += sizeof "%rename";
2005 while (*p1 == ' ' || *p1 == '\t')
2008 if (! ISALPHA ((unsigned char) *p1))
2009 fatal ("specs %%rename syntax malformed after %ld characters",
2010 (long) (p1 - buffer));
2013 while (*p2 && !ISSPACE ((unsigned char) *p2))
2016 if (*p2 != ' ' && *p2 != '\t')
2017 fatal ("specs %%rename syntax malformed after %ld characters",
2018 (long) (p2 - buffer));
2022 while (*p2 == ' ' || *p2 == '\t')
2025 if (! ISALPHA ((unsigned char) *p2))
2026 fatal ("specs %%rename syntax malformed after %ld characters",
2027 (long) (p2 - buffer));
2029 /* Get new spec name. */
2031 while (*p3 && !ISSPACE ((unsigned char) *p3))
2035 fatal ("specs %%rename syntax malformed after %ld characters",
2036 (long) (p3 - buffer));
2039 for (sl = specs; sl; sl = sl->next)
2040 if (name_len == sl->name_len && !strcmp (sl->name, p1))
2044 fatal ("specs %s spec was not found to be renamed", p1);
2046 if (strcmp (p1, p2) == 0)
2049 for (newsl = specs; newsl; newsl = newsl->next)
2050 if (strcmp (newsl->name, p2) == 0)
2051 fatal ("%s: attempt to rename spec '%s' to already defined spec '%s'",
2056 notice ("rename spec %s to %s\n", p1, p2);
2058 notice ("spec is '%s'\n\n", *(sl->ptr_spec));
2062 set_spec (p2, *(sl->ptr_spec));
2064 free ((void *) *(sl->ptr_spec));
2066 *(sl->ptr_spec) = "";
2071 fatal ("specs unknown %% command after %ld characters",
2072 (long) (p1 - buffer));
2075 /* Find the colon that should end the suffix. */
2077 while (*p1 && *p1 != ':' && *p1 != '\n')
2080 /* The colon shouldn't be missing. */
2082 fatal ("specs file malformed after %ld characters",
2083 (long) (p1 - buffer));
2085 /* Skip back over trailing whitespace. */
2087 while (p2 > buffer && (p2[-1] == ' ' || p2[-1] == '\t'))
2090 /* Copy the suffix to a string. */
2091 suffix = save_string (p, p2 - p);
2092 /* Find the next line. */
2093 p = skip_whitespace (p1 + 1);
2095 fatal ("specs file malformed after %ld characters",
2096 (long) (p - buffer));
2099 /* Find next blank line or end of string. */
2100 while (*p1 && !(*p1 == '\n' && (p1[1] == '\n' || p1[1] == '\0')))
2103 /* Specs end at the blank line and do not include the newline. */
2104 spec = save_string (p, p1 - p);
2107 /* Delete backslash-newline sequences from the spec. */
2112 if (in[0] == '\\' && in[1] == '\n')
2114 else if (in[0] == '#')
2115 while (*in && *in != '\n')
2123 if (suffix[0] == '*')
2125 if (! strcmp (suffix, "*link_command"))
2126 link_command_spec = spec;
2128 set_spec (suffix + 1, spec);
2132 /* Add this pair to the vector. */
2134 = xrealloc (compilers,
2135 (n_compilers + 2) * sizeof (struct compiler));
2137 compilers[n_compilers].suffix = suffix;
2138 compilers[n_compilers].spec = spec;
2140 memset (&compilers[n_compilers], 0, sizeof compilers[n_compilers]);
2144 link_command_spec = spec;
2147 if (link_command_spec == 0)
2148 fatal ("spec file has no spec for linking");
2151 /* Record the names of temporary files we tell compilers to write,
2152 and delete them at the end of the run. */
2154 /* This is the common prefix we use to make temp file names.
2155 It is chosen once for each run of this program.
2156 It is substituted into a spec by %g or %j.
2157 Thus, all temp file names contain this prefix.
2158 In practice, all temp file names start with this prefix.
2160 This prefix comes from the envvar TMPDIR if it is defined;
2161 otherwise, from the P_tmpdir macro if that is defined;
2162 otherwise, in /usr/tmp or /tmp;
2163 or finally the current directory if all else fails. */
2165 static const char *temp_filename;
2167 /* Length of the prefix. */
2169 static int temp_filename_length;
2171 /* Define the list of temporary files to delete. */
2176 struct temp_file *next;
2179 /* Queue of files to delete on success or failure of compilation. */
2180 static struct temp_file *always_delete_queue;
2181 /* Queue of files to delete on failure of compilation. */
2182 static struct temp_file *failure_delete_queue;
2184 /* Record FILENAME as a file to be deleted automatically.
2185 ALWAYS_DELETE nonzero means delete it if all compilation succeeds;
2186 otherwise delete it in any case.
2187 FAIL_DELETE nonzero means delete it if a compilation step fails;
2188 otherwise delete it in any case. */
2191 record_temp_file (const char *filename, int always_delete, int fail_delete)
2193 char *const name = xstrdup (filename);
2197 struct temp_file *temp;
2198 for (temp = always_delete_queue; temp; temp = temp->next)
2199 if (! strcmp (name, temp->name))
2202 temp = xmalloc (sizeof (struct temp_file));
2203 temp->next = always_delete_queue;
2205 always_delete_queue = temp;
2212 struct temp_file *temp;
2213 for (temp = failure_delete_queue; temp; temp = temp->next)
2214 if (! strcmp (name, temp->name))
2217 temp = xmalloc (sizeof (struct temp_file));
2218 temp->next = failure_delete_queue;
2220 failure_delete_queue = temp;
2226 /* Delete all the temporary files whose names we previously recorded. */
2229 delete_if_ordinary (const char *name)
2235 printf ("Delete %s? (y or n) ", name);
2239 while ((c = getchar ()) != '\n' && c != EOF)
2242 if (i == 'y' || i == 'Y')
2244 if (stat (name, &st) >= 0 && S_ISREG (st.st_mode))
2245 if (unlink (name) < 0)
2247 perror_with_name (name);
2251 delete_temp_files (void)
2253 struct temp_file *temp;
2255 for (temp = always_delete_queue; temp; temp = temp->next)
2256 delete_if_ordinary (temp->name);
2257 always_delete_queue = 0;
2260 /* Delete all the files to be deleted on error. */
2263 delete_failure_queue (void)
2265 struct temp_file *temp;
2267 for (temp = failure_delete_queue; temp; temp = temp->next)
2268 delete_if_ordinary (temp->name);
2272 clear_failure_queue (void)
2274 failure_delete_queue = 0;
2277 /* Build a list of search directories from PATHS.
2278 PREFIX is a string to prepend to the list.
2279 If CHECK_DIR_P is nonzero we ensure the directory exists.
2280 This is used mostly by putenv_from_prefixes so we use `collect_obstack'.
2281 It is also used by the --print-search-dirs flag. */
2284 build_search_list (struct path_prefix *paths, const char *prefix,
2287 int suffix_len = (machine_suffix) ? strlen (machine_suffix) : 0;
2289 = (just_machine_suffix) ? strlen (just_machine_suffix) : 0;
2290 int first_time = TRUE;
2291 struct prefix_list *pprefix;
2293 obstack_grow (&collect_obstack, prefix, strlen (prefix));
2294 obstack_1grow (&collect_obstack, '=');
2296 for (pprefix = paths->plist; pprefix != 0; pprefix = pprefix->next)
2298 int len = strlen (pprefix->prefix);
2302 || is_directory (pprefix->prefix, machine_suffix, 0)))
2305 obstack_1grow (&collect_obstack, PATH_SEPARATOR);
2308 obstack_grow (&collect_obstack, pprefix->prefix, len);
2309 obstack_grow (&collect_obstack, machine_suffix, suffix_len);
2312 if (just_machine_suffix
2313 && pprefix->require_machine_suffix == 2
2315 || is_directory (pprefix->prefix, just_machine_suffix, 0)))
2318 obstack_1grow (&collect_obstack, PATH_SEPARATOR);
2321 obstack_grow (&collect_obstack, pprefix->prefix, len);
2322 obstack_grow (&collect_obstack, just_machine_suffix,
2326 if (! pprefix->require_machine_suffix)
2329 obstack_1grow (&collect_obstack, PATH_SEPARATOR);
2332 obstack_grow (&collect_obstack, pprefix->prefix, len);
2336 obstack_1grow (&collect_obstack, '\0');
2337 return obstack_finish (&collect_obstack);
2340 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
2344 putenv_from_prefixes (struct path_prefix *paths, const char *env_var)
2346 putenv (build_search_list (paths, env_var, 1));
2349 /* Check whether NAME can be accessed in MODE. This is like access,
2350 except that it never considers directories to be executable. */
2353 access_check (const char *name, int mode)
2359 if (stat (name, &st) < 0
2360 || S_ISDIR (st.st_mode))
2364 return access (name, mode);
2367 /* Search for NAME using the prefix list PREFIXES. MODE is passed to
2368 access to check permissions.
2369 Return 0 if not found, otherwise return its name, allocated with malloc. */
2372 find_a_file (struct path_prefix *pprefix, const char *name, int mode,
2376 const char *const file_suffix =
2377 ((mode & X_OK) != 0 ? HOST_EXECUTABLE_SUFFIX : "");
2378 struct prefix_list *pl;
2379 int len = pprefix->max_len + strlen (name) + strlen (file_suffix) + 1;
2380 const char *multilib_name, *multilib_os_name;
2382 #ifdef DEFAULT_ASSEMBLER
2383 if (! strcmp (name, "as") && access (DEFAULT_ASSEMBLER, mode) == 0)
2384 return xstrdup (DEFAULT_ASSEMBLER);
2387 #ifdef DEFAULT_LINKER
2388 if (! strcmp(name, "ld") && access (DEFAULT_LINKER, mode) == 0)
2389 return xstrdup (DEFAULT_LINKER);
2393 len += strlen (machine_suffix);
2395 multilib_name = name;
2396 multilib_os_name = name;
2397 if (multilib && multilib_os_dir)
2399 int len1 = multilib_dir ? strlen (multilib_dir) + 1 : 0;
2400 int len2 = strlen (multilib_os_dir) + 1;
2402 len += len1 > len2 ? len1 : len2;
2404 multilib_name = ACONCAT ((multilib_dir, dir_separator_str, name,
2406 if (strcmp (multilib_os_dir, ".") != 0)
2407 multilib_os_name = ACONCAT ((multilib_os_dir, dir_separator_str, name,
2411 temp = xmalloc (len);
2413 /* Determine the filename to execute (special case for absolute paths). */
2415 if (IS_ABSOLUTE_PATH (name))
2417 if (access (name, mode) == 0)
2419 strcpy (temp, name);
2424 for (pl = pprefix->plist; pl; pl = pl->next)
2426 const char *this_name
2427 = pl->os_multilib ? multilib_os_name : multilib_name;
2431 /* Some systems have a suffix for executable files.
2432 So try appending that first. */
2433 if (file_suffix[0] != 0)
2435 strcpy (temp, pl->prefix);
2436 strcat (temp, machine_suffix);
2437 strcat (temp, multilib_name);
2438 strcat (temp, file_suffix);
2439 if (access_check (temp, mode) == 0)
2441 if (pl->used_flag_ptr != 0)
2442 *pl->used_flag_ptr = 1;
2447 /* Now try just the multilib_name. */
2448 strcpy (temp, pl->prefix);
2449 strcat (temp, machine_suffix);
2450 strcat (temp, multilib_name);
2451 if (access_check (temp, mode) == 0)
2453 if (pl->used_flag_ptr != 0)
2454 *pl->used_flag_ptr = 1;
2459 /* Certain prefixes are tried with just the machine type,
2460 not the version. This is used for finding as, ld, etc. */
2461 if (just_machine_suffix && pl->require_machine_suffix == 2)
2463 /* Some systems have a suffix for executable files.
2464 So try appending that first. */
2465 if (file_suffix[0] != 0)
2467 strcpy (temp, pl->prefix);
2468 strcat (temp, just_machine_suffix);
2469 strcat (temp, multilib_name);
2470 strcat (temp, file_suffix);
2471 if (access_check (temp, mode) == 0)
2473 if (pl->used_flag_ptr != 0)
2474 *pl->used_flag_ptr = 1;
2479 strcpy (temp, pl->prefix);
2480 strcat (temp, just_machine_suffix);
2481 strcat (temp, multilib_name);
2482 if (access_check (temp, mode) == 0)
2484 if (pl->used_flag_ptr != 0)
2485 *pl->used_flag_ptr = 1;
2490 /* Certain prefixes can't be used without the machine suffix
2491 when the machine or version is explicitly specified. */
2492 if (! pl->require_machine_suffix)
2494 /* Some systems have a suffix for executable files.
2495 So try appending that first. */
2496 if (file_suffix[0] != 0)
2498 strcpy (temp, pl->prefix);
2499 strcat (temp, this_name);
2500 strcat (temp, file_suffix);
2501 if (access_check (temp, mode) == 0)
2503 if (pl->used_flag_ptr != 0)
2504 *pl->used_flag_ptr = 1;
2509 strcpy (temp, pl->prefix);
2510 strcat (temp, this_name);
2511 if (access_check (temp, mode) == 0)
2513 if (pl->used_flag_ptr != 0)
2514 *pl->used_flag_ptr = 1;
2524 /* Ranking of prefixes in the sort list. -B prefixes are put before
2527 enum path_prefix_priority
2529 PREFIX_PRIORITY_B_OPT,
2530 PREFIX_PRIORITY_LAST
2533 /* Add an entry for PREFIX in PLIST. The PLIST is kept in ascending
2534 order according to PRIORITY. Within each PRIORITY, new entries are
2537 If WARN is nonzero, we will warn if no file is found
2538 through this prefix. WARN should point to an int
2539 which will be set to 1 if this entry is used.
2541 COMPONENT is the value to be passed to update_path.
2543 REQUIRE_MACHINE_SUFFIX is 1 if this prefix can't be used without
2544 the complete value of machine_suffix.
2545 2 means try both machine_suffix and just_machine_suffix. */
2548 add_prefix (struct path_prefix *pprefix, const char *prefix,
2549 const char *component, /* enum prefix_priority */ int priority,
2550 int require_machine_suffix, int *warn, int os_multilib)
2552 struct prefix_list *pl, **prev;
2555 for (prev = &pprefix->plist;
2556 (*prev) != NULL && (*prev)->priority <= priority;
2557 prev = &(*prev)->next)
2560 /* Keep track of the longest prefix. */
2562 prefix = update_path (prefix, component);
2563 len = strlen (prefix);
2564 if (len > pprefix->max_len)
2565 pprefix->max_len = len;
2567 pl = xmalloc (sizeof (struct prefix_list));
2568 pl->prefix = prefix;
2569 pl->require_machine_suffix = require_machine_suffix;
2570 pl->used_flag_ptr = warn;
2571 pl->priority = priority;
2572 pl->os_multilib = os_multilib;
2576 /* Insert after PREV. */
2581 /* Same as add_prefix, but prepending target_system_root to prefix. */
2583 add_sysrooted_prefix (struct path_prefix *pprefix, const char *prefix,
2584 const char *component,
2585 /* enum prefix_priority */ int priority,
2586 int require_machine_suffix, int *warn, int os_multilib)
2588 if (!IS_ABSOLUTE_PATH (prefix))
2591 if (target_system_root)
2593 if (target_sysroot_suffix)
2594 prefix = concat (target_sysroot_suffix, prefix, NULL);
2595 prefix = concat (target_system_root, prefix, NULL);
2597 /* We have to override this because GCC's notion of sysroot
2598 moves along with GCC. */
2602 add_prefix (pprefix, prefix, component, priority,
2603 require_machine_suffix, warn, os_multilib);
2606 /* Execute the command specified by the arguments on the current line of spec.
2607 When using pipes, this includes several piped-together commands
2608 with `|' between them.
2610 Return 0 if successful, -1 if failed. */
2616 int n_commands; /* # of command. */
2620 const char *prog; /* program name. */
2621 const char **argv; /* vector of args. */
2622 int pid; /* pid of process for this command. */
2625 struct command *commands; /* each command buffer with above info. */
2627 if (processing_spec_function)
2630 /* Count # of piped commands. */
2631 for (n_commands = 1, i = 0; i < argbuf_index; i++)
2632 if (strcmp (argbuf[i], "|") == 0)
2635 /* Get storage for each command. */
2636 commands = alloca (n_commands * sizeof (struct command));
2638 /* Split argbuf into its separate piped processes,
2639 and record info about each one.
2640 Also search for the programs that are to be run. */
2642 commands[0].prog = argbuf[0]; /* first command. */
2643 commands[0].argv = &argbuf[0];
2644 string = find_a_file (&exec_prefixes, commands[0].prog, X_OK, 0);
2647 commands[0].argv[0] = string;
2649 for (n_commands = 1, i = 0; i < argbuf_index; i++)
2650 if (strcmp (argbuf[i], "|") == 0)
2651 { /* each command. */
2652 #if defined (__MSDOS__) || defined (OS2) || defined (VMS)
2653 fatal ("-pipe not supported");
2655 argbuf[i] = 0; /* termination of command args. */
2656 commands[n_commands].prog = argbuf[i + 1];
2657 commands[n_commands].argv = &argbuf[i + 1];
2658 string = find_a_file (&exec_prefixes, commands[n_commands].prog,
2661 commands[n_commands].argv[0] = string;
2665 argbuf[argbuf_index] = 0;
2667 /* If -v, print what we are about to do, and maybe query. */
2671 /* For help listings, put a blank line between sub-processes. */
2672 if (print_help_list)
2673 fputc ('\n', stderr);
2675 /* Print each piped command as a separate line. */
2676 for (i = 0; i < n_commands; i++)
2678 const char *const *j;
2680 if (verbose_only_flag)
2682 for (j = commands[i].argv; *j; j++)
2685 fprintf (stderr, " \"");
2686 for (p = *j; *p; ++p)
2688 if (*p == '"' || *p == '\\' || *p == '$')
2689 fputc ('\\', stderr);
2692 fputc ('"', stderr);
2696 for (j = commands[i].argv; *j; j++)
2697 fprintf (stderr, " %s", *j);
2699 /* Print a pipe symbol after all but the last command. */
2700 if (i + 1 != n_commands)
2701 fprintf (stderr, " |");
2702 fprintf (stderr, "\n");
2705 if (verbose_only_flag != 0)
2707 /* verbose_only_flag should act as if the spec was
2708 executed, so increment execution_count before
2709 returning. This prevents spurious warnings about
2710 unused linker input files, etc. */
2715 notice ("\nGo ahead? (y or n) ");
2719 while (getchar () != '\n')
2722 if (i != 'y' && i != 'Y')
2727 #ifdef ENABLE_VALGRIND_CHECKING
2728 /* Run the each command through valgrind. To simplify prepending the
2729 path to valgrind and the option "-q" (for quiet operation unless
2730 something triggers), we allocate a separate argv array. */
2732 for (i = 0; i < n_commands; i++)
2738 for (argc = 0; commands[i].argv[argc] != NULL; argc++)
2741 argv = alloca ((argc + 3) * sizeof (char *));
2743 argv[0] = VALGRIND_PATH;
2745 for (j = 2; j < argc + 2; j++)
2746 argv[j] = commands[i].argv[j - 2];
2749 commands[i].argv = argv;
2750 commands[i].prog = argv[0];
2754 /* Run each piped subprocess. */
2756 for (i = 0; i < n_commands; i++)
2758 char *errmsg_fmt, *errmsg_arg;
2759 const char *string = commands[i].argv[0];
2761 /* For some bizarre reason, the second argument of execvp() is
2762 char *const *, not const char *const *. */
2763 commands[i].pid = pexecute (string, (char *const *) commands[i].argv,
2764 programname, temp_filename,
2765 &errmsg_fmt, &errmsg_arg,
2766 ((i == 0 ? PEXECUTE_FIRST : 0)
2767 | (i + 1 == n_commands ? PEXECUTE_LAST : 0)
2768 | (string == commands[i].prog
2769 ? PEXECUTE_SEARCH : 0)
2770 | (verbose_flag ? PEXECUTE_VERBOSE : 0)));
2772 if (commands[i].pid == -1)
2773 pfatal_pexecute (errmsg_fmt, errmsg_arg);
2775 if (string != commands[i].prog)
2776 free ((void *) string);
2781 /* Wait for all the subprocesses to finish.
2782 We don't care what order they finish in;
2783 we know that N_COMMANDS waits will get them all.
2784 Ignore subprocesses that we don't know about,
2785 since they can be spawned by the process that exec'ed us. */
2789 #ifdef HAVE_GETRUSAGE
2791 double ut = 0.0, st = 0.0;
2794 for (i = 0; i < n_commands;)
2800 pid = pwait (commands[i].pid, &status, 0);
2804 #ifdef HAVE_GETRUSAGE
2807 /* getrusage returns the total resource usage of all children
2808 up to now. Copy the previous values into prus, get the
2809 current statistics, then take the difference. */
2812 getrusage (RUSAGE_CHILDREN, &rus);
2813 d.tv_sec = rus.ru_utime.tv_sec - prus.ru_utime.tv_sec;
2814 d.tv_usec = rus.ru_utime.tv_usec - prus.ru_utime.tv_usec;
2815 ut = (double) d.tv_sec + (double) d.tv_usec / 1.0e6;
2817 d.tv_sec = rus.ru_stime.tv_sec - prus.ru_stime.tv_sec;
2818 d.tv_usec = rus.ru_stime.tv_usec - prus.ru_stime.tv_usec;
2819 st = (double) d.tv_sec + (double) d.tv_usec / 1.0e6;
2823 for (j = 0; j < n_commands; j++)
2824 if (commands[j].pid == pid)
2827 if (WIFSIGNALED (status))
2830 /* SIGPIPE is a special case. It happens in -pipe mode
2831 when the compiler dies before the preprocessor is
2832 done, or the assembler dies before the compiler is
2833 done. There's generally been an error already, and
2834 this is just fallout. So don't generate another error
2835 unless we would otherwise have succeeded. */
2836 if (WTERMSIG (status) == SIGPIPE
2837 && (signal_count || greatest_status >= MIN_FATAL_STATUS))
2842 Internal error: %s (program %s)\n\
2843 Please submit a full bug report.\n\
2844 See %s for instructions.",
2845 strsignal (WTERMSIG (status)), commands[j].prog,
2850 else if (WIFEXITED (status)
2851 && WEXITSTATUS (status) >= MIN_FATAL_STATUS)
2853 if (WEXITSTATUS (status) > greatest_status)
2854 greatest_status = WEXITSTATUS (status);
2857 #ifdef HAVE_GETRUSAGE
2858 if (report_times && ut + st != 0)
2859 notice ("# %s %.2f %.2f\n", commands[j].prog, ut, st);
2868 /* Find all the switches given to us
2869 and make a vector describing them.
2870 The elements of the vector are strings, one per switch given.
2871 If a switch uses following arguments, then the `part1' field
2872 is the switch itself and the `args' field
2873 is a null-terminated vector containing the following arguments.
2874 The `live_cond' field is:
2876 1 if the switch is true in a conditional spec,
2877 -1 if false (overridden by a later switch)
2878 -2 if this switch should be ignored (used in %<S)
2879 The `validated' field is nonzero if any spec has looked at this switch;
2880 if it remains zero at the end of the run, it must be meaningless. */
2883 #define SWITCH_FALSE -1
2884 #define SWITCH_IGNORE -2
2885 #define SWITCH_LIVE 1
2892 unsigned char validated;
2893 unsigned char ordering;
2896 static struct switchstr *switches;
2898 static int n_switches;
2903 const char *language;
2906 /* Also a vector of input files specified. */
2908 static struct infile *infiles;
2912 /* True if multiple input files are being compiled to a single
2915 static bool combine_inputs;
2917 /* This counts the number of libraries added by lang_specific_driver, so that
2918 we can tell if there were any user supplied any files or libraries. */
2920 static int added_libraries;
2922 /* And a vector of corresponding output files is made up later. */
2924 const char **outfiles;
2926 /* Used to track if none of the -B paths are used. */
2929 /* Gives value to pass as "warn" to add_prefix for standard prefixes. */
2930 static int *warn_std_ptr = 0;
2932 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2934 /* Convert NAME to a new name if it is the standard suffix. DO_EXE
2935 is true if we should look for an executable suffix. DO_OBJ
2936 is true if we should look for an object suffix. */
2939 convert_filename (const char *name, int do_exe ATTRIBUTE_UNUSED,
2940 int do_obj ATTRIBUTE_UNUSED)
2942 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2950 len = strlen (name);
2952 #ifdef HAVE_TARGET_OBJECT_SUFFIX
2953 /* Convert x.o to x.obj if TARGET_OBJECT_SUFFIX is ".obj". */
2954 if (do_obj && len > 2
2955 && name[len - 2] == '.'
2956 && name[len - 1] == 'o')
2958 obstack_grow (&obstack, name, len - 2);
2959 obstack_grow0 (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX));
2960 name = obstack_finish (&obstack);
2964 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2965 /* If there is no filetype, make it the executable suffix (which includes
2966 the "."). But don't get confused if we have just "-o". */
2967 if (! do_exe || TARGET_EXECUTABLE_SUFFIX[0] == 0 || (len == 2 && name[0] == '-'))
2970 for (i = len - 1; i >= 0; i--)
2971 if (IS_DIR_SEPARATOR (name[i]))
2974 for (i++; i < len; i++)
2978 obstack_grow (&obstack, name, len);
2979 obstack_grow0 (&obstack, TARGET_EXECUTABLE_SUFFIX,
2980 strlen (TARGET_EXECUTABLE_SUFFIX));
2981 name = obstack_finish (&obstack);
2988 /* Display the command line switches accepted by gcc. */
2992 printf (_("Usage: %s [options] file...\n"), programname);
2993 fputs (_("Options:\n"), stdout);
2995 fputs (_(" -pass-exit-codes Exit with highest error code from a phase\n"), stdout);
2996 fputs (_(" --help Display this information\n"), stdout);
2997 fputs (_(" --target-help Display target specific command line options\n"), stdout);
2999 fputs (_(" (Use '-v --help' to display command line options of sub-processes)\n"), stdout);
3000 fputs (_(" -dumpspecs Display all of the built in spec strings\n"), stdout);
3001 fputs (_(" -dumpversion Display the version of the compiler\n"), stdout);
3002 fputs (_(" -dumpmachine Display the compiler's target processor\n"), stdout);
3003 fputs (_(" -print-search-dirs Display the directories in the compiler's search path\n"), stdout);
3004 fputs (_(" -print-libgcc-file-name Display the name of the compiler's companion library\n"), stdout);
3005 fputs (_(" -print-file-name=<lib> Display the full path to library <lib>\n"), stdout);
3006 fputs (_(" -print-prog-name=<prog> Display the full path to compiler component <prog>\n"), stdout);
3007 fputs (_(" -print-multi-directory Display the root directory for versions of libgcc\n"), stdout);
3009 -print-multi-lib Display the mapping between command line options and\n\
3010 multiple library search directories\n"), stdout);
3011 fputs (_(" -print-multi-os-directory Display the relative path to OS libraries\n"), stdout);
3012 fputs (_(" -Wa,<options> Pass comma-separated <options> on to the assembler\n"), stdout);
3013 fputs (_(" -Wp,<options> Pass comma-separated <options> on to the preprocessor\n"), stdout);
3014 fputs (_(" -Wl,<options> Pass comma-separated <options> on to the linker\n"), stdout);
3015 fputs (_(" -Xassembler <arg> Pass <arg> on to the assembler\n"), stdout);
3016 fputs (_(" -Xpreprocessor <arg> Pass <arg> on to the preprocessor\n"), stdout);
3017 fputs (_(" -Xlinker <arg> Pass <arg> on to the linker\n"), stdout);
3018 fputs (_(" -save-temps Do not delete intermediate files\n"), stdout);
3019 fputs (_(" -pipe Use pipes rather than intermediate files\n"), stdout);
3020 fputs (_(" -time Time the execution of each subprocess\n"), stdout);
3021 fputs (_(" -specs=<file> Override built-in specs with the contents of <file>\n"), stdout);
3022 fputs (_(" -std=<standard> Assume that the input sources are for <standard>\n"), stdout);
3023 fputs (_(" -B <directory> Add <directory> to the compiler's search paths\n"), stdout);
3024 fputs (_(" -b <machine> Run gcc for target <machine>, if installed\n"), stdout);
3025 fputs (_(" -V <version> Run gcc version number <version>, if installed\n"), stdout);
3026 fputs (_(" -v Display the programs invoked by the compiler\n"), stdout);
3027 fputs (_(" -### Like -v but options quoted and commands not executed\n"), stdout);
3028 fputs (_(" -E Preprocess only; do not compile, assemble or link\n"), stdout);
3029 fputs (_(" -S Compile only; do not assemble or link\n"), stdout);
3030 fputs (_(" -c Compile and assemble, but do not link\n"), stdout);
3031 fputs (_(" -o <file> Place the output into <file>\n"), stdout);
3033 -x <language> Specify the language of the following input files\n\
3034 Permissible languages include: c c++ assembler none\n\
3035 'none' means revert to the default behavior of\n\
3036 guessing the language based on the file's extension\n\
3040 \nOptions starting with -g, -f, -m, -O, -W, or --param are automatically\n\
3041 passed on to the various sub-processes invoked by %s. In order to pass\n\
3042 other options on to these processes the -W<letter> options must be used.\n\
3045 /* The rest of the options are displayed by invocations of the various
3050 add_preprocessor_option (const char *option, int len)
3052 n_preprocessor_options++;
3054 if (! preprocessor_options)
3055 preprocessor_options = xmalloc (n_preprocessor_options * sizeof (char *));
3057 preprocessor_options = xrealloc (preprocessor_options,
3058 n_preprocessor_options * sizeof (char *));
3060 preprocessor_options [n_preprocessor_options - 1] =
3061 save_string (option, len);
3065 add_assembler_option (const char *option, int len)
3067 n_assembler_options++;
3069 if (! assembler_options)
3070 assembler_options = xmalloc (n_assembler_options * sizeof (char *));
3072 assembler_options = xrealloc (assembler_options,
3073 n_assembler_options * sizeof (char *));
3075 assembler_options [n_assembler_options - 1] = save_string (option, len);
3079 add_linker_option (const char *option, int len)
3083 if (! linker_options)
3084 linker_options = xmalloc (n_linker_options * sizeof (char *));
3086 linker_options = xrealloc (linker_options,
3087 n_linker_options * sizeof (char *));
3089 linker_options [n_linker_options - 1] = save_string (option, len);
3092 /* Create the vector `switches' and its contents.
3093 Store its length in `n_switches'. */
3096 process_command (int argc, const char **argv)
3101 const char *spec_lang = 0;
3102 int last_language_n_infiles;
3105 int lang_n_infiles = 0;
3106 #ifdef MODIFY_TARGET_NAME
3107 int is_modify_target_name;
3111 GET_ENVIRONMENT (gcc_exec_prefix, "GCC_EXEC_PREFIX");
3115 added_libraries = 0;
3117 /* Figure compiler version from version string. */
3119 compiler_version = temp1 = xstrdup (version_string);
3121 for (; *temp1; ++temp1)
3130 /* If there is a -V or -b option (or both), process it now, before
3131 trying to interpret the rest of the command line. */
3132 if (argc > 1 && argv[1][0] == '-'
3133 && (argv[1][1] == 'V' || argv[1][1] == 'b'))
3135 const char *new_version = DEFAULT_TARGET_VERSION;
3136 const char *new_machine = DEFAULT_TARGET_MACHINE;
3137 const char *progname = argv[0];
3142 while (argc > 1 && argv[1][0] == '-'
3143 && (argv[1][1] == 'V' || argv[1][1] == 'b'))
3145 char opt = argv[1][1];
3147 if (argv[1][2] != '\0')
3160 fatal ("`-%c' option must have argument", opt);
3167 for (baselen = strlen (progname); baselen > 0; baselen--)
3168 if (IS_DIR_SEPARATOR (progname[baselen-1]))
3170 new_argv0 = xmemdup (progname, baselen,
3171 baselen + concat_length (new_version, new_machine,
3172 "-gcc-", NULL) + 1);
3173 strcpy (new_argv0 + baselen, new_machine);
3174 strcat (new_argv0, "-gcc-");
3175 strcat (new_argv0, new_version);
3177 new_argv = xmemdup (argv, (argc + 1) * sizeof (argv[0]),
3178 (argc + 1) * sizeof (argv[0]));
3179 new_argv[0] = new_argv0;
3181 execvp (new_argv0, new_argv);
3182 fatal ("couldn't run `%s': %s", new_argv0, xstrerror (errno));
3185 /* Set up the default search paths. If there is no GCC_EXEC_PREFIX,
3186 see if we can create it from the pathname specified in argv[0]. */
3188 gcc_libexec_prefix = standard_libexec_prefix;
3189 #ifndef FREEBSD_NATIVE
3191 /* FIXME: make_relative_prefix doesn't yet work for VMS. */
3192 if (!gcc_exec_prefix)
3194 gcc_exec_prefix = make_relative_prefix (argv[0], standard_bindir_prefix,
3195 standard_exec_prefix);
3196 gcc_libexec_prefix = make_relative_prefix (argv[0],
3197 standard_bindir_prefix,
3198 standard_libexec_prefix);
3199 if (gcc_exec_prefix)
3200 putenv (concat ("GCC_EXEC_PREFIX=", gcc_exec_prefix, NULL));
3203 gcc_libexec_prefix = make_relative_prefix (gcc_exec_prefix,
3204 standard_exec_prefix,
3205 standard_libexec_prefix);
3208 #endif /* not FREEBSD_NATIVE */
3210 if (gcc_exec_prefix)
3212 int len = strlen (gcc_exec_prefix);
3214 if (len > (int) sizeof ("/lib/gcc/") - 1
3215 && (IS_DIR_SEPARATOR (gcc_exec_prefix[len-1])))
3217 temp = gcc_exec_prefix + len - sizeof ("/lib/gcc/") + 1;
3218 if (IS_DIR_SEPARATOR (*temp)
3219 && strncmp (temp + 1, "lib", 3) == 0
3220 && IS_DIR_SEPARATOR (temp[4])
3221 && strncmp (temp + 5, "gcc", 3) == 0)
3222 len -= sizeof ("/lib/gcc/") - 1;
3225 set_std_prefix (gcc_exec_prefix, len);
3226 add_prefix (&exec_prefixes, gcc_libexec_prefix, "GCC",
3227 PREFIX_PRIORITY_LAST, 0, NULL, 0);
3228 add_prefix (&startfile_prefixes, gcc_exec_prefix, "GCC",
3229 PREFIX_PRIORITY_LAST, 0, NULL, 0);
3232 /* COMPILER_PATH and LIBRARY_PATH have values
3233 that are lists of directory names with colons. */
3235 GET_ENVIRONMENT (temp, "COMPILER_PATH");
3238 const char *startp, *endp;
3239 char *nstore = alloca (strlen (temp) + 3);
3241 startp = endp = temp;
3244 if (*endp == PATH_SEPARATOR || *endp == 0)
3246 strncpy (nstore, startp, endp - startp);
3248 strcpy (nstore, concat (".", dir_separator_str, NULL));
3249 else if (!IS_DIR_SEPARATOR (endp[-1]))
3251 nstore[endp - startp] = DIR_SEPARATOR;
3252 nstore[endp - startp + 1] = 0;
3255 nstore[endp - startp] = 0;
3256 add_prefix (&exec_prefixes, nstore, 0,
3257 PREFIX_PRIORITY_LAST, 0, NULL, 0);
3258 add_prefix (&include_prefixes,
3259 concat (nstore, "include", NULL),
3260 0, PREFIX_PRIORITY_LAST, 0, NULL, 0);
3263 endp = startp = endp + 1;
3270 GET_ENVIRONMENT (temp, LIBRARY_PATH_ENV);
3271 if (temp && *cross_compile == '0')
3273 const char *startp, *endp;
3274 char *nstore = alloca (strlen (temp) + 3);
3276 startp = endp = temp;
3279 if (*endp == PATH_SEPARATOR || *endp == 0)
3281 strncpy (nstore, startp, endp - startp);
3283 strcpy (nstore, concat (".", dir_separator_str, NULL));
3284 else if (!IS_DIR_SEPARATOR (endp[-1]))
3286 nstore[endp - startp] = DIR_SEPARATOR;
3287 nstore[endp - startp + 1] = 0;
3290 nstore[endp - startp] = 0;
3291 add_prefix (&startfile_prefixes, nstore, NULL,
3292 PREFIX_PRIORITY_LAST, 0, NULL, 1);
3295 endp = startp = endp + 1;
3302 /* Use LPATH like LIBRARY_PATH (for the CMU build program). */
3303 GET_ENVIRONMENT (temp, "LPATH");
3304 if (temp && *cross_compile == '0')
3306 const char *startp, *endp;
3307 char *nstore = alloca (strlen (temp) + 3);
3309 startp = endp = temp;
3312 if (*endp == PATH_SEPARATOR || *endp == 0)
3314 strncpy (nstore, startp, endp - startp);
3316 strcpy (nstore, concat (".", dir_separator_str, NULL));
3317 else if (!IS_DIR_SEPARATOR (endp[-1]))
3319 nstore[endp - startp] = DIR_SEPARATOR;
3320 nstore[endp - startp + 1] = 0;
3323 nstore[endp - startp] = 0;
3324 add_prefix (&startfile_prefixes, nstore, NULL,
3325 PREFIX_PRIORITY_LAST, 0, NULL, 1);
3328 endp = startp = endp + 1;
3335 /* Options specified as if they appeared on the command line. */
3336 temp = getenv ("GCC_OPTIONS");
3337 if ((temp) && (strlen (temp) > 0))
3342 const char **new_argv;
3345 while (isspace (*temp))
3347 len = strlen (temp);
3348 envopts = (char *) xmalloc (len + 1);
3349 strcpy (envopts, temp);
3351 for (i = 0; i < (len - 1); i++)
3352 if ((isspace (envopts[i])) && ! (isspace (envopts[i+1])))
3355 new_argv = (const char **) alloca ((optc + argc) * sizeof(char *));
3357 for (i = 0, new_argc = 1; new_argc <= optc; new_argc++)
3359 while (isspace (envopts[i]))
3361 new_argv[new_argc] = envopts + i;
3362 while (!isspace (envopts[i]) && (envopts[i] != '\0'))
3364 envopts[i++] = '\0';
3366 for (i = 1; i < argc; i++)
3367 new_argv[new_argc++] = argv[i];
3373 /* Convert new-style -- options to old-style. */
3374 translate_options (&argc, (const char *const **) &argv);
3376 /* Do language-specific adjustment/addition of flags. */
3377 lang_specific_driver (&argc, (const char *const **) &argv, &added_libraries);
3379 /* Scan argv twice. Here, the first time, just count how many switches
3380 there will be in their vector, and how many input files in theirs.
3381 Here we also parse the switches that cc itself uses (e.g. -v). */
3383 for (i = 1; i < argc; i++)
3385 if (! strcmp (argv[i], "-dumpspecs"))
3387 struct spec_list *sl;
3389 for (sl = specs; sl; sl = sl->next)
3390 printf ("*%s:\n%s\n\n", sl->name, *(sl->ptr_spec));
3391 if (link_command_spec)
3392 printf ("*link_command:\n%s\n\n", link_command_spec);
3395 else if (! strcmp (argv[i], "-dumpversion"))
3397 printf ("%s\n", spec_version);
3400 else if (! strcmp (argv[i], "-dumpmachine"))
3402 printf ("%s\n", spec_machine);
3405 else if (strcmp (argv[i], "-fversion") == 0)
3407 /* translate_options () has turned --version into -fversion. */
3408 printf (_("%s (GCC) %s\n"), programname, version_string);
3409 printf ("Copyright %s 2004 Free Software Foundation, Inc.\n",
3411 fputs (_("This is free software; see the source for copying conditions. There is NO\n\
3412 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\n"),
3416 else if (strcmp (argv[i], "-fhelp") == 0)
3418 /* translate_options () has turned --help into -fhelp. */
3419 print_help_list = 1;
3421 /* We will be passing a dummy file on to the sub-processes. */
3425 /* CPP driver cannot obtain switch from cc1_options. */
3427 add_preprocessor_option ("--help", 6);
3428 add_assembler_option ("--help", 6);
3429 add_linker_option ("--help", 6);
3431 else if (strcmp (argv[i], "-ftarget-help") == 0)
3433 /* translate_options() has turned --target-help into -ftarget-help. */
3434 target_help_flag = 1;
3436 /* We will be passing a dummy file on to the sub-processes. */
3440 /* CPP driver cannot obtain switch from cc1_options. */
3442 add_preprocessor_option ("--target-help", 13);
3443 add_assembler_option ("--target-help", 13);
3444 add_linker_option ("--target-help", 13);
3446 else if (! strcmp (argv[i], "-pass-exit-codes"))
3448 pass_exit_codes = 1;
3451 else if (! strcmp (argv[i], "-print-search-dirs"))
3452 print_search_dirs = 1;
3453 else if (! strcmp (argv[i], "-print-libgcc-file-name"))
3454 print_file_name = "libgcc.a";
3455 else if (! strncmp (argv[i], "-print-file-name=", 17))
3456 print_file_name = argv[i] + 17;
3457 else if (! strncmp (argv[i], "-print-prog-name=", 17))
3458 print_prog_name = argv[i] + 17;
3459 else if (! strcmp (argv[i], "-print-multi-lib"))
3460 print_multi_lib = 1;
3461 else if (! strcmp (argv[i], "-print-multi-directory"))
3462 print_multi_directory = 1;
3463 else if (! strcmp (argv[i], "-print-multi-os-directory"))
3464 print_multi_os_directory = 1;
3465 else if (! strncmp (argv[i], "-Wa,", 4))
3468 /* Pass the rest of this option to the assembler. */
3470 /* Split the argument at commas. */
3472 for (j = 4; argv[i][j]; j++)
3473 if (argv[i][j] == ',')
3475 add_assembler_option (argv[i] + prev, j - prev);
3479 /* Record the part after the last comma. */
3480 add_assembler_option (argv[i] + prev, j - prev);
3482 else if (! strncmp (argv[i], "-Wp,", 4))
3485 /* Pass the rest of this option to the preprocessor. */
3487 /* Split the argument at commas. */
3489 for (j = 4; argv[i][j]; j++)
3490 if (argv[i][j] == ',')
3492 add_preprocessor_option (argv[i] + prev, j - prev);
3496 /* Record the part after the last comma. */
3497 add_preprocessor_option (argv[i] + prev, j - prev);
3499 else if (argv[i][0] == '+' && argv[i][1] == 'e')
3500 /* The +e options to the C++ front-end. */
3502 else if (strncmp (argv[i], "-Wl,", 4) == 0)
3505 /* Split the argument at commas. */
3506 for (j = 3; argv[i][j]; j++)
3507 n_infiles += (argv[i][j] == ',');
3509 else if (strcmp (argv[i], "-Xlinker") == 0)
3512 fatal ("argument to `-Xlinker' is missing");
3517 else if (strcmp (argv[i], "-Xpreprocessor") == 0)
3520 fatal ("argument to `-Xpreprocessor' is missing");
3522 add_preprocessor_option (argv[i+1], strlen (argv[i+1]));
3524 else if (strcmp (argv[i], "-Xassembler") == 0)
3527 fatal ("argument to `-Xassembler' is missing");
3529 add_assembler_option (argv[i+1], strlen (argv[i+1]));
3531 else if (strcmp (argv[i], "-l") == 0)
3534 fatal ("argument to `-l' is missing");
3539 else if (strncmp (argv[i], "-l", 2) == 0)
3541 else if (strcmp (argv[i], "-save-temps") == 0)
3543 save_temps_flag = 1;
3546 else if (strcmp (argv[i], "-specs") == 0)
3548 struct user_specs *user = xmalloc (sizeof (struct user_specs));
3550 fatal ("argument to `-specs' is missing");
3552 user->next = (struct user_specs *) 0;
3553 user->filename = argv[i];
3554 if (user_specs_tail)
3555 user_specs_tail->next = user;
3557 user_specs_head = user;
3558 user_specs_tail = user;
3560 else if (strncmp (argv[i], "-specs=", 7) == 0)
3562 struct user_specs *user = xmalloc (sizeof (struct user_specs));
3563 if (strlen (argv[i]) == 7)
3564 fatal ("argument to `-specs=' is missing");
3566 user->next = (struct user_specs *) 0;
3567 user->filename = argv[i] + 7;
3568 if (user_specs_tail)
3569 user_specs_tail->next = user;
3571 user_specs_head = user;
3572 user_specs_tail = user;
3574 else if (strcmp (argv[i], "-time") == 0)
3576 else if (strcmp (argv[i], "-pipe") == 0)
3578 /* -pipe has to go into the switches array as well as
3583 else if (strcmp (argv[i], "-###") == 0)
3585 /* This is similar to -v except that there is no execution
3586 of the commands and the echoed arguments are quoted. It
3587 is intended for use in shell scripts to capture the
3588 driver-generated command line. */
3589 verbose_only_flag++;
3592 else if (argv[i][0] == '-' && argv[i][1] != 0)
3594 const char *p = &argv[i][1];
3601 fatal ("`-%c' must come at the start of the command line", c);
3609 if (p[1] == 0 && i + 1 == argc)
3610 fatal ("argument to `-B' is missing");
3616 len = strlen (value);
3618 /* Catch the case where the user has forgotten to append a
3619 directory separator to the path. Note, they may be using
3620 -B to add an executable name prefix, eg "i386-elf-", in
3621 order to distinguish between multiple installations of
3622 GCC in the same directory. Hence we must check to see
3623 if appending a directory separator actually makes a
3624 valid directory name. */
3625 if (! IS_DIR_SEPARATOR (value [len - 1])
3626 && is_directory (value, "", 0))
3628 char *tmp = xmalloc (len + 2);
3629 strcpy (tmp, value);
3630 tmp[len] = DIR_SEPARATOR;
3635 /* As a kludge, if the arg is "[foo/]stageN/", just
3636 add "[foo/]include" to the include prefix. */
3639 && (IS_DIR_SEPARATOR (value[len - 8]))))
3640 && strncmp (value + len - 7, "stage", 5) == 0
3641 && ISDIGIT (value[len - 2])
3642 && (IS_DIR_SEPARATOR (value[len - 1])))
3645 add_prefix (&include_prefixes, "include", NULL,
3646 PREFIX_PRIORITY_B_OPT, 0, NULL, 0);
3649 char * string = xmalloc (len + 1);
3651 strncpy (string, value, len - 7);
3652 strcpy (string + len - 7, "include");
3653 add_prefix (&include_prefixes, string, NULL,
3654 PREFIX_PRIORITY_B_OPT, 0, NULL, 0);
3658 add_prefix (&exec_prefixes, value, NULL,
3659 PREFIX_PRIORITY_B_OPT, 0, &warn_B, 0);
3660 add_prefix (&startfile_prefixes, value, NULL,
3661 PREFIX_PRIORITY_B_OPT, 0, &warn_B, 0);
3662 add_prefix (&include_prefixes, concat (value, "include", NULL),
3663 NULL, PREFIX_PRIORITY_B_OPT, 0, NULL, 0);
3668 case 'v': /* Print our subcommands and print versions. */
3670 /* If they do anything other than exactly `-v', don't set
3671 verbose_flag; rather, continue on to give the error. */
3689 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3694 /* Forward scan, just in case -S or -c is specified
3701 if (argv[j][0] == '-')
3703 if (SWITCH_CURTAILS_COMPILATION (argv[j][1])
3709 else if ((skip = SWITCH_TAKES_ARG (argv[j][1])))
3710 j += skip - (argv[j][2] != 0);
3711 else if ((skip = WORD_SWITCH_TAKES_ARG (argv[j] + 1)))
3718 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX) || defined(HAVE_TARGET_OBJECT_SUFFIX)
3720 argv[i + 1] = convert_filename (argv[i + 1], ! have_c, 0);
3722 argv[i] = convert_filename (argv[i], ! have_c, 0);
3729 #ifdef MODIFY_TARGET_NAME
3730 is_modify_target_name = 0;
3732 for (j = 0; j < ARRAY_SIZE (modify_target); j++)
3733 if (! strcmp (argv[i], modify_target[j].sw))
3735 char *new_name = xmalloc (strlen (modify_target[j].str)
3736 + strlen (spec_machine));
3739 int made_addition = 0;
3741 is_modify_target_name = 1;
3742 for (p = spec_machine, q = new_name; *p != 0; )
3744 if (modify_target[j].add_del == DELETE
3745 && (! strncmp (q, modify_target[j].str,
3746 strlen (modify_target[j].str))))
3747 p += strlen (modify_target[j].str);
3748 else if (modify_target[j].add_del == ADD
3749 && ! made_addition && *p == '-')
3751 for (r = modify_target[j].str; *r != 0; )
3759 spec_machine = new_name;
3762 if (is_modify_target_name)
3768 if (SWITCH_TAKES_ARG (c) > (p[1] != 0))
3769 i += SWITCH_TAKES_ARG (c) - (p[1] != 0);
3770 else if (WORD_SWITCH_TAKES_ARG (p))
3771 i += WORD_SWITCH_TAKES_ARG (p);
3781 combine_inputs = (have_c && have_o && lang_n_infiles > 1);
3783 if ((save_temps_flag || report_times) && use_pipes)
3785 /* -save-temps overrides -pipe, so that temp files are produced */
3786 if (save_temps_flag)
3787 error ("warning: -pipe ignored because -save-temps specified");
3788 /* -time overrides -pipe because we can't get correct stats when
3789 multiple children are running at once. */
3790 else if (report_times)
3791 error ("warning: -pipe ignored because -time specified");
3796 /* Set up the search paths before we go looking for config files. */
3798 /* These come before the md prefixes so that we will find gcc's subcommands
3799 (such as cpp) rather than those of the host system. */
3800 /* Use 2 as fourth arg meaning try just the machine as a suffix,
3801 as well as trying the machine and the version. */
3802 #ifdef FREEBSD_NATIVE
3803 add_prefix (&exec_prefixes, PREFIX"/bin/", "BINUTILS",
3804 PREFIX_PRIORITY_LAST, 0, warn_std_ptr, 0);
3805 #endif /* FREEBSD_NATIVE */
3807 add_prefix (&exec_prefixes, standard_libexec_prefix, "GCC",
3808 PREFIX_PRIORITY_LAST, 1, warn_std_ptr, 0);
3809 add_prefix (&exec_prefixes, standard_libexec_prefix, "BINUTILS",
3810 PREFIX_PRIORITY_LAST, 2, warn_std_ptr, 0);
3811 #ifndef FREEBSD_NATIVE
3812 add_prefix (&exec_prefixes, standard_exec_prefix, "BINUTILS",
3813 PREFIX_PRIORITY_LAST, 2, warn_std_ptr, 0);
3814 add_prefix (&exec_prefixes, standard_exec_prefix_1, "BINUTILS",
3815 PREFIX_PRIORITY_LAST, 2, warn_std_ptr, 0);
3816 add_prefix (&exec_prefixes, standard_exec_prefix_2, "BINUTILS",
3817 PREFIX_PRIORITY_LAST, 2, warn_std_ptr, 0);
3818 #endif /* FREEBSD_NATIVE */
3821 #ifndef FREEBSD_NATIVE
3822 add_prefix (&startfile_prefixes, standard_exec_prefix, "BINUTILS",
3823 PREFIX_PRIORITY_LAST, 1, warn_std_ptr, 0);
3824 add_prefix (&startfile_prefixes, standard_exec_prefix_2, "BINUTILS",
3825 PREFIX_PRIORITY_LAST, 1, warn_std_ptr, 0);
3826 #endif /* not FREEBSD_NATIVE */
3828 tooldir_prefix = concat (tooldir_base_prefix, spec_machine,
3829 dir_separator_str, NULL);
3831 /* If tooldir is relative, base it on exec_prefixes. A relative
3832 tooldir lets us move the installed tree as a unit.
3834 If GCC_EXEC_PREFIX is defined, then we want to add two relative
3835 directories, so that we can search both the user specified directory
3836 and the standard place. */
3838 if (!IS_ABSOLUTE_PATH (tooldir_prefix))
3840 if (gcc_exec_prefix)
3842 char *gcc_exec_tooldir_prefix
3843 = concat (gcc_exec_prefix, spec_machine, dir_separator_str,
3844 spec_version, dir_separator_str, tooldir_prefix, NULL);
3846 add_prefix (&exec_prefixes,
3847 concat (gcc_exec_tooldir_prefix, "bin",
3848 dir_separator_str, NULL),
3849 NULL, PREFIX_PRIORITY_LAST, 0, NULL, 0);
3850 add_prefix (&startfile_prefixes,
3851 concat (gcc_exec_tooldir_prefix, "lib",
3852 dir_separator_str, NULL),
3853 NULL, PREFIX_PRIORITY_LAST, 0, NULL, 1);
3856 tooldir_prefix = concat (standard_exec_prefix, spec_machine,
3857 dir_separator_str, spec_version,
3858 dir_separator_str, tooldir_prefix, NULL);
3861 #ifndef FREEBSD_NATIVE
3862 add_prefix (&exec_prefixes,
3863 concat (tooldir_prefix, "bin", dir_separator_str, NULL),
3864 "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL, 0);
3865 add_prefix (&startfile_prefixes,
3866 concat (tooldir_prefix, "lib", dir_separator_str, NULL),
3867 "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL, 1);
3869 #if defined(TARGET_SYSTEM_ROOT_RELOCATABLE) && !defined(VMS)
3870 /* If the normal TARGET_SYSTEM_ROOT is inside of $exec_prefix,
3871 then consider it to relocate with the rest of the GCC installation
3872 if GCC_EXEC_PREFIX is set.
3873 ``make_relative_prefix'' is not compiled for VMS, so don't call it. */
3874 if (target_system_root && gcc_exec_prefix)
3876 char *tmp_prefix = make_relative_prefix (argv[0],
3877 standard_bindir_prefix,
3878 target_system_root);
3879 if (tmp_prefix && access_check (tmp_prefix, F_OK) == 0)
3881 target_system_root = tmp_prefix;
3882 target_system_root_changed = 1;
3886 #endif /* FREEBSD_NATIVE */
3888 /* More prefixes are enabled in main, after we read the specs file
3889 and determine whether this is cross-compilation or not. */
3891 /* Then create the space for the vectors and scan again. */
3893 switches = xmalloc ((n_switches + 1) * sizeof (struct switchstr));
3894 infiles = xmalloc ((n_infiles + 1) * sizeof (struct infile));
3897 last_language_n_infiles = -1;
3899 /* This, time, copy the text of each switch and store a pointer
3900 to the copy in the vector of switches.
3901 Store all the infiles in their vector. */
3903 for (i = 1; i < argc; i++)
3905 /* Just skip the switches that were handled by the preceding loop. */
3906 #ifdef MODIFY_TARGET_NAME
3907 is_modify_target_name = 0;
3909 for (j = 0; j < ARRAY_SIZE (modify_target); j++)
3910 if (! strcmp (argv[i], modify_target[j].sw))
3911 is_modify_target_name = 1;
3913 if (is_modify_target_name)
3917 if (! strncmp (argv[i], "-Wa,", 4))
3919 else if (! strncmp (argv[i], "-Wp,", 4))
3921 else if (! strcmp (argv[i], "-pass-exit-codes"))
3923 else if (! strcmp (argv[i], "-print-search-dirs"))
3925 else if (! strcmp (argv[i], "-print-libgcc-file-name"))
3927 else if (! strncmp (argv[i], "-print-file-name=", 17))
3929 else if (! strncmp (argv[i], "-print-prog-name=", 17))
3931 else if (! strcmp (argv[i], "-print-multi-lib"))
3933 else if (! strcmp (argv[i], "-print-multi-directory"))
3935 else if (! strcmp (argv[i], "-print-multi-os-directory"))
3937 else if (! strcmp (argv[i], "-ftarget-help"))
3939 else if (! strcmp (argv[i], "-fhelp"))
3941 else if (argv[i][0] == '+' && argv[i][1] == 'e')
3943 /* Compensate for the +e options to the C++ front-end;
3944 they're there simply for cfront call-compatibility. We do
3945 some magic in default_compilers to pass them down properly.
3946 Note we deliberately start at the `+' here, to avoid passing
3947 -e0 or -e1 down into the linker. */
3948 switches[n_switches].part1 = &argv[i][0];
3949 switches[n_switches].args = 0;
3950 switches[n_switches].live_cond = SWITCH_OK;
3951 switches[n_switches].validated = 0;
3954 else if (strncmp (argv[i], "-Wl,", 4) == 0)
3957 /* Split the argument at commas. */
3959 for (j = 4; argv[i][j]; j++)
3960 if (argv[i][j] == ',')
3962 infiles[n_infiles].language = "*";
3963 infiles[n_infiles++].name
3964 = save_string (argv[i] + prev, j - prev);
3967 /* Record the part after the last comma. */
3968 infiles[n_infiles].language = "*";
3969 infiles[n_infiles++].name = argv[i] + prev;
3971 else if (strcmp (argv[i], "-Xlinker") == 0)
3973 infiles[n_infiles].language = "*";
3974 infiles[n_infiles++].name = argv[++i];
3976 else if (strcmp (argv[i], "-Xassembler") == 0)
3978 infiles[n_infiles].language = "*";
3979 infiles[n_infiles++].name = argv[++i];
3981 else if (strcmp (argv[i], "-Xpreprocessor") == 0)
3983 infiles[n_infiles].language = "*";
3984 infiles[n_infiles++].name = argv[++i];
3986 else if (strcmp (argv[i], "-l") == 0)
3987 { /* POSIX allows separation of -l and the lib arg;
3988 canonicalize by concatenating -l with its arg */
3989 infiles[n_infiles].language = "*";
3990 infiles[n_infiles++].name = concat ("-l", argv[++i], NULL);
3992 else if (strncmp (argv[i], "-l", 2) == 0)
3994 infiles[n_infiles].language = "*";
3995 infiles[n_infiles++].name = argv[i];
3997 else if (strcmp (argv[i], "-specs") == 0)
3999 else if (strncmp (argv[i], "-specs=", 7) == 0)
4001 else if (strcmp (argv[i], "-time") == 0)
4003 else if (strcmp (argv[i], "-###") == 0)
4005 else if (argv[i][0] == '-' && argv[i][1] != 0)
4007 const char *p = &argv[i][1];
4012 if (p[1] == 0 && i + 1 == argc)
4013 fatal ("argument to `-x' is missing");
4015 spec_lang = argv[++i];
4018 if (! strcmp (spec_lang, "none"))
4019 /* Suppress the warning if -xnone comes after the last input
4020 file, because alternate command interfaces like g++ might
4021 find it useful to place -xnone after each input file. */
4024 last_language_n_infiles = n_infiles;
4027 switches[n_switches].part1 = p;
4028 /* Deal with option arguments in separate argv elements. */
4029 if ((SWITCH_TAKES_ARG (c) > (p[1] != 0))
4030 || WORD_SWITCH_TAKES_ARG (p))
4033 int n_args = WORD_SWITCH_TAKES_ARG (p);
4037 /* Count only the option arguments in separate argv elements. */
4038 n_args = SWITCH_TAKES_ARG (c) - (p[1] != 0);
4040 if (i + n_args >= argc)
4041 fatal ("argument to `-%s' is missing", p);
4042 switches[n_switches].args
4043 = xmalloc ((n_args + 1) * sizeof(const char *));
4045 switches[n_switches].args[j++] = argv[++i];
4046 /* Null-terminate the vector. */
4047 switches[n_switches].args[j] = 0;
4049 else if (strchr (switches_need_spaces, c))
4051 /* On some systems, ld cannot handle some options without
4052 a space. So split the option from its argument. */
4053 char *part1 = xmalloc (2);
4057 switches[n_switches].part1 = part1;
4058 switches[n_switches].args = xmalloc (2 * sizeof (const char *));
4059 switches[n_switches].args[0] = xstrdup (p+1);
4060 switches[n_switches].args[1] = 0;
4063 switches[n_switches].args = 0;
4065 switches[n_switches].live_cond = SWITCH_OK;
4066 switches[n_switches].validated = 0;
4067 switches[n_switches].ordering = 0;
4068 /* These are always valid, since gcc.c itself understands them. */
4069 if (!strcmp (p, "save-temps")
4070 || !strcmp (p, "static-libgcc")
4071 || !strcmp (p, "shared-libgcc")
4072 || !strcmp (p, "pipe"))
4073 switches[n_switches].validated = 1;
4076 char ch = switches[n_switches].part1[0];
4078 switches[n_switches].validated = 1;
4084 #ifdef HAVE_TARGET_OBJECT_SUFFIX
4085 argv[i] = convert_filename (argv[i], 0, access (argv[i], F_OK));
4088 if (strcmp (argv[i], "-") != 0 && access (argv[i], F_OK) < 0)
4090 perror_with_name (argv[i]);
4095 infiles[n_infiles].language = spec_lang;
4096 infiles[n_infiles++].name = argv[i];
4101 if (n_infiles == last_language_n_infiles && spec_lang != 0)
4102 error ("warning: `-x %s' after last input file has no effect", spec_lang);
4104 /* Ensure we only invoke each subprocess once. */
4105 if (target_help_flag || print_help_list)
4109 /* Create a dummy input file, so that we can pass --target-help on to
4110 the various sub-processes. */
4111 infiles[0].language = "c";
4112 infiles[0].name = "help-dummy";
4114 if (target_help_flag)
4116 switches[n_switches].part1 = "--target-help";
4117 switches[n_switches].args = 0;
4118 switches[n_switches].live_cond = SWITCH_OK;
4119 switches[n_switches].validated = 0;
4124 if (print_help_list)
4126 switches[n_switches].part1 = "--help";
4127 switches[n_switches].args = 0;
4128 switches[n_switches].live_cond = SWITCH_OK;
4129 switches[n_switches].validated = 0;
4135 switches[n_switches].part1 = 0;
4136 infiles[n_infiles].name = 0;
4139 /* Store switches not filtered out by %<S in spec in COLLECT_GCC_OPTIONS
4140 and place that in the environment. */
4143 set_collect_gcc_options (void)
4148 /* Build COLLECT_GCC_OPTIONS to have all of the options specified to
4150 obstack_grow (&collect_obstack, "COLLECT_GCC_OPTIONS=",
4151 sizeof ("COLLECT_GCC_OPTIONS=") - 1);
4154 for (i = 0; (int) i < n_switches; i++)
4156 const char *const *args;
4159 obstack_grow (&collect_obstack, " ", 1);
4163 /* Ignore elided switches. */
4164 if (switches[i].live_cond == SWITCH_IGNORE)
4167 obstack_grow (&collect_obstack, "'-", 2);
4168 q = switches[i].part1;
4169 while ((p = strchr (q, '\'')))
4171 obstack_grow (&collect_obstack, q, p - q);
4172 obstack_grow (&collect_obstack, "'\\''", 4);
4175 obstack_grow (&collect_obstack, q, strlen (q));
4176 obstack_grow (&collect_obstack, "'", 1);
4178 for (args = switches[i].args; args && *args; args++)
4180 obstack_grow (&collect_obstack, " '", 2);
4182 while ((p = strchr (q, '\'')))
4184 obstack_grow (&collect_obstack, q, p - q);
4185 obstack_grow (&collect_obstack, "'\\''", 4);
4188 obstack_grow (&collect_obstack, q, strlen (q));
4189 obstack_grow (&collect_obstack, "'", 1);
4192 obstack_grow (&collect_obstack, "\0", 1);
4193 putenv (obstack_finish (&collect_obstack));
4196 /* Process a spec string, accumulating and running commands. */
4198 /* These variables describe the input file name.
4199 input_file_number is the index on outfiles of this file,
4200 so that the output file name can be stored for later use by %o.
4201 input_basename is the start of the part of the input file
4202 sans all directory names, and basename_length is the number
4203 of characters starting there excluding the suffix .c or whatever. */
4205 static const char *input_filename;
4206 static int input_file_number;
4207 size_t input_filename_length;
4208 static int basename_length;
4209 static int suffixed_basename_length;
4210 static const char *input_basename;
4211 static const char *input_suffix;
4212 static struct stat input_stat;
4213 static int input_stat_set;
4215 /* The compiler used to process the current input file. */
4216 static struct compiler *input_file_compiler;
4218 /* These are variables used within do_spec and do_spec_1. */
4220 /* Nonzero if an arg has been started and not yet terminated
4221 (with space, tab or newline). */
4222 static int arg_going;
4224 /* Nonzero means %d or %g has been seen; the next arg to be terminated
4225 is a temporary file name. */
4226 static int delete_this_arg;
4228 /* Nonzero means %w has been seen; the next arg to be terminated
4229 is the output file name of this compilation. */
4230 static int this_is_output_file;
4232 /* Nonzero means %s has been seen; the next arg to be terminated
4233 is the name of a library file and we should try the standard
4234 search dirs for it. */
4235 static int this_is_library_file;
4237 /* Nonzero means that the input of this command is coming from a pipe. */
4238 static int input_from_pipe;
4240 /* Nonnull means substitute this for any suffix when outputting a switches
4242 static const char *suffix_subst;
4244 /* Process the spec SPEC and run the commands specified therein.
4245 Returns 0 if the spec is successfully processed; -1 if failed. */
4248 do_spec (const char *spec)
4252 value = do_spec_2 (spec);
4254 /* Force out any unfinished command.
4255 If -pipe, this forces out the last command if it ended in `|'. */
4258 if (argbuf_index > 0 && !strcmp (argbuf[argbuf_index - 1], "|"))
4261 set_collect_gcc_options ();
4263 if (argbuf_index > 0)
4271 do_spec_2 (const char *spec)
4278 delete_this_arg = 0;
4279 this_is_output_file = 0;
4280 this_is_library_file = 0;
4281 input_from_pipe = 0;
4282 suffix_subst = NULL;
4284 result = do_spec_1 (spec, 0, NULL);
4286 /* End any pending argument. */
4289 obstack_1grow (&obstack, 0);
4290 string = obstack_finish (&obstack);
4291 if (this_is_library_file)
4292 string = find_file (string);
4293 store_arg (string, delete_this_arg, this_is_output_file);
4294 if (this_is_output_file)
4295 outfiles[input_file_number] = string;
4303 /* Process the given spec string and add any new options to the end
4304 of the switches/n_switches array. */
4307 do_option_spec (const char *name, const char *spec)
4309 unsigned int i, value_count, value_len;
4310 const char *p, *q, *value;
4311 char *tmp_spec, *tmp_spec_p;
4313 if (configure_default_options[0].name == NULL)
4316 for (i = 0; i < ARRAY_SIZE (configure_default_options); i++)
4317 if (strcmp (configure_default_options[i].name, name) == 0)
4319 if (i == ARRAY_SIZE (configure_default_options))
4322 value = configure_default_options[i].value;
4323 value_len = strlen (value);
4325 /* Compute the size of the final spec. */
4328 while ((p = strstr (p, "%(VALUE)")) != NULL)
4334 /* Replace each %(VALUE) by the specified value. */
4335 tmp_spec = alloca (strlen (spec) + 1
4336 + value_count * (value_len - strlen ("%(VALUE)")));
4337 tmp_spec_p = tmp_spec;
4339 while ((p = strstr (q, "%(VALUE)")) != NULL)
4341 memcpy (tmp_spec_p, q, p - q);
4342 tmp_spec_p = tmp_spec_p + (p - q);
4343 memcpy (tmp_spec_p, value, value_len);
4344 tmp_spec_p += value_len;
4345 q = p + strlen ("%(VALUE)");
4347 strcpy (tmp_spec_p, q);
4349 do_self_spec (tmp_spec);
4352 /* Process the given spec string and add any new options to the end
4353 of the switches/n_switches array. */
4356 do_self_spec (const char *spec)
4359 do_spec_1 (" ", 0, NULL);
4361 if (argbuf_index > 0)
4366 n_switches += argbuf_index;
4367 switches = xrealloc (switches,
4368 sizeof (struct switchstr) * (n_switches + 1));
4370 switches[n_switches] = switches[first];
4371 for (i = 0; i < argbuf_index; i++)
4373 struct switchstr *sw;
4375 /* Each switch should start with '-'. */
4376 if (argbuf[i][0] != '-')
4379 sw = &switches[i + first];
4380 sw->part1 = &argbuf[i][1];
4382 sw->live_cond = SWITCH_OK;
4389 /* Process the sub-spec SPEC as a portion of a larger spec.
4390 This is like processing a whole spec except that we do
4391 not initialize at the beginning and we do not supply a
4392 newline by default at the end.
4393 INSWITCH nonzero means don't process %-sequences in SPEC;
4394 in this case, % is treated as an ordinary character.
4395 This is used while substituting switches.
4396 INSWITCH nonzero also causes SPC not to terminate an argument.
4398 Value is zero unless a line was finished
4399 and the command on that line reported an error. */
4402 do_spec_1 (const char *spec, int inswitch, const char *soft_matched_part)
4404 const char *p = spec;
4411 /* If substituting a switch, treat all chars like letters.
4412 Otherwise, NL, SPC, TAB and % are special. */
4413 switch (inswitch ? 'a' : c)
4416 /* End of line: finish any pending argument,
4417 then run the pending command if one has been started. */
4420 obstack_1grow (&obstack, 0);
4421 string = obstack_finish (&obstack);
4422 if (this_is_library_file)
4423 string = find_file (string);
4424 store_arg (string, delete_this_arg, this_is_output_file);
4425 if (this_is_output_file)
4426 outfiles[input_file_number] = string;
4430 if (argbuf_index > 0 && !strcmp (argbuf[argbuf_index - 1], "|"))
4432 /* A `|' before the newline means use a pipe here,
4433 but only if -pipe was specified.
4434 Otherwise, execute now and don't pass the `|' as an arg. */
4437 input_from_pipe = 1;
4444 set_collect_gcc_options ();
4446 if (argbuf_index > 0)
4452 /* Reinitialize for a new command, and for a new argument. */
4455 delete_this_arg = 0;
4456 this_is_output_file = 0;
4457 this_is_library_file = 0;
4458 input_from_pipe = 0;
4462 /* End any pending argument. */
4465 obstack_1grow (&obstack, 0);
4466 string = obstack_finish (&obstack);
4467 if (this_is_library_file)
4468 string = find_file (string);
4469 store_arg (string, delete_this_arg, this_is_output_file);
4470 if (this_is_output_file)
4471 outfiles[input_file_number] = string;
4475 obstack_1grow (&obstack, c);
4481 /* Space or tab ends an argument if one is pending. */
4484 obstack_1grow (&obstack, 0);
4485 string = obstack_finish (&obstack);
4486 if (this_is_library_file)
4487 string = find_file (string);
4488 store_arg (string, delete_this_arg, this_is_output_file);
4489 if (this_is_output_file)
4490 outfiles[input_file_number] = string;
4492 /* Reinitialize for a new argument. */
4494 delete_this_arg = 0;
4495 this_is_output_file = 0;
4496 this_is_library_file = 0;
4503 fatal ("invalid specification! Bug in cc");
4506 obstack_grow (&obstack, input_basename, basename_length);
4511 obstack_grow (&obstack, input_basename, suffixed_basename_length);
4516 delete_this_arg = 2;
4519 /* Dump out the directories specified with LIBRARY_PATH,
4520 followed by the absolute directories
4521 that we search for startfiles. */
4524 struct prefix_list *pl = startfile_prefixes.plist;
4525 size_t bufsize = 100;
4526 char *buffer = xmalloc (bufsize);
4529 for (; pl; pl = pl->next)
4531 #ifdef RELATIVE_PREFIX_NOT_LINKDIR
4532 /* Used on systems which record the specified -L dirs
4533 and use them to search for dynamic linking. */
4534 /* Relative directories always come from -B,
4535 and it is better not to use them for searching
4536 at run time. In particular, stage1 loses. */
4537 if (!IS_ABSOLUTE_PATH (pl->prefix))
4540 /* Try subdirectory if there is one. */
4541 if (multilib_dir != NULL
4542 || (pl->os_multilib && multilib_os_dir != NULL))
4544 const char *multi_dir;
4546 multi_dir = pl->os_multilib ? multilib_os_dir
4548 if (machine_suffix && multilib_dir)
4550 if (strlen (pl->prefix) + strlen (machine_suffix)
4552 bufsize = (strlen (pl->prefix)
4553 + strlen (machine_suffix)) * 2 + 1;
4554 buffer = xrealloc (buffer, bufsize);
4555 strcpy (buffer, pl->prefix);
4556 strcat (buffer, machine_suffix);
4557 if (is_directory (buffer, multilib_dir, 1))
4559 do_spec_1 ("-L", 0, NULL);
4560 #ifdef SPACE_AFTER_L_OPTION
4561 do_spec_1 (" ", 0, NULL);
4563 do_spec_1 (buffer, 1, NULL);
4564 do_spec_1 (multilib_dir, 1, NULL);
4565 /* Make this a separate argument. */
4566 do_spec_1 (" ", 0, NULL);
4569 if (!pl->require_machine_suffix)
4571 if (is_directory (pl->prefix, multi_dir, 1))
4573 do_spec_1 ("-L", 0, NULL);
4574 #ifdef SPACE_AFTER_L_OPTION
4575 do_spec_1 (" ", 0, NULL);
4577 do_spec_1 (pl->prefix, 1, NULL);
4578 do_spec_1 (multi_dir, 1, NULL);
4579 /* Make this a separate argument. */
4580 do_spec_1 (" ", 0, NULL);
4586 if (is_directory (pl->prefix, machine_suffix, 1))
4588 do_spec_1 ("-L", 0, NULL);
4589 #ifdef SPACE_AFTER_L_OPTION
4590 do_spec_1 (" ", 0, NULL);
4592 do_spec_1 (pl->prefix, 1, NULL);
4593 /* Remove slash from machine_suffix. */
4594 if (strlen (machine_suffix) >= bufsize)
4595 bufsize = strlen (machine_suffix) * 2 + 1;
4596 buffer = xrealloc (buffer, bufsize);
4597 strcpy (buffer, machine_suffix);
4598 idx = strlen (buffer);
4599 if (IS_DIR_SEPARATOR (buffer[idx - 1]))
4600 buffer[idx - 1] = 0;
4601 do_spec_1 (buffer, 1, NULL);
4602 /* Make this a separate argument. */
4603 do_spec_1 (" ", 0, NULL);
4606 if (!pl->require_machine_suffix)
4608 if (is_directory (pl->prefix, "", 1))
4610 do_spec_1 ("-L", 0, NULL);
4611 #ifdef SPACE_AFTER_L_OPTION
4612 do_spec_1 (" ", 0, NULL);
4614 /* Remove slash from pl->prefix. */
4615 if (strlen (pl->prefix) >= bufsize)
4616 bufsize = strlen (pl->prefix) * 2 + 1;
4617 buffer = xrealloc (buffer, bufsize);
4618 strcpy (buffer, pl->prefix);
4619 idx = strlen (buffer);
4620 if (IS_DIR_SEPARATOR (buffer[idx - 1]))
4621 buffer[idx - 1] = 0;
4622 do_spec_1 (buffer, 1, NULL);
4623 /* Make this a separate argument. */
4624 do_spec_1 (" ", 0, NULL);
4633 /* %efoo means report an error with `foo' as error message
4634 and don't execute any more commands for this file. */
4638 while (*p != 0 && *p != '\n')
4640 buf = alloca (p - q + 1);
4641 strncpy (buf, q, p - q);
4648 /* %nfoo means report a notice with `foo' on stderr. */
4652 while (*p != 0 && *p != '\n')
4654 buf = alloca (p - q + 1);
4655 strncpy (buf, q, p - q);
4657 notice ("%s\n", buf);
4667 /* If save_temps_flag is off, and the HOST_BIT_BUCKET is
4668 defined, and it is not a directory, and it is
4669 writable, use it. Otherwise, treat this like any
4670 other temporary file. */
4672 if ((!save_temps_flag)
4673 && (stat (HOST_BIT_BUCKET, &st) == 0) && (!S_ISDIR (st.st_mode))
4674 && (access (HOST_BIT_BUCKET, W_OK) == 0))
4676 obstack_grow (&obstack, HOST_BIT_BUCKET,
4677 strlen (HOST_BIT_BUCKET));
4678 delete_this_arg = 0;
4683 goto create_temp_file;
4687 obstack_1grow (&obstack, '-');
4688 delete_this_arg = 0;
4691 /* consume suffix */
4692 while (*p == '.' || ISALPHA ((unsigned char) *p))
4694 if (p[0] == '%' && p[1] == 'O')
4699 goto create_temp_file;
4703 /* consume suffix */
4704 while (*p == '.' || ISALPHA ((unsigned char) *p))
4706 if (p[0] == '%' && p[1] == 'O')
4711 goto create_temp_file;
4717 struct temp_name *t;
4719 const char *suffix = p;
4720 char *saved_suffix = NULL;
4722 while (*p == '.' || ISALPHA ((unsigned char) *p))
4724 suffix_length = p - suffix;
4725 if (p[0] == '%' && p[1] == 'O')
4728 /* We don't support extra suffix characters after %O. */
4729 if (*p == '.' || ISALPHA ((unsigned char) *p))
4731 if (suffix_length == 0)
4732 suffix = TARGET_OBJECT_SUFFIX;
4736 = xmalloc (suffix_length
4737 + strlen (TARGET_OBJECT_SUFFIX));
4738 strncpy (saved_suffix, suffix, suffix_length);
4739 strcpy (saved_suffix + suffix_length,
4740 TARGET_OBJECT_SUFFIX);
4742 suffix_length += strlen (TARGET_OBJECT_SUFFIX);
4745 /* If the input_filename has the same suffix specified
4746 for the %g, %u, or %U, and -save-temps is specified,
4747 we could end up using that file as an intermediate
4748 thus clobbering the user's source file (.e.g.,
4749 gcc -save-temps foo.s would clobber foo.s with the
4750 output of cpp0). So check for this condition and
4751 generate a temp file as the intermediate. */
4753 if (save_temps_flag)
4755 temp_filename_length = basename_length + suffix_length;
4756 temp_filename = alloca (temp_filename_length + 1);
4757 strncpy ((char *) temp_filename, input_basename, basename_length);
4758 strncpy ((char *) temp_filename + basename_length, suffix,
4760 *((char *) temp_filename + temp_filename_length) = '\0';
4761 if (strcmp (temp_filename, input_filename) != 0)
4763 struct stat st_temp;
4765 /* Note, set_input() resets input_stat_set to 0. */
4766 if (input_stat_set == 0)
4768 input_stat_set = stat (input_filename, &input_stat);
4769 if (input_stat_set >= 0)
4773 /* If we have the stat for the input_filename
4774 and we can do the stat for the temp_filename
4775 then the they could still refer to the same
4776 file if st_dev/st_ino's are the same. */
4778 if (input_stat_set != 1
4779 || stat (temp_filename, &st_temp) < 0
4780 || input_stat.st_dev != st_temp.st_dev
4781 || input_stat.st_ino != st_temp.st_ino)
4783 temp_filename = save_string (temp_filename,
4784 temp_filename_length + 1);
4785 obstack_grow (&obstack, temp_filename,
4786 temp_filename_length);
4788 delete_this_arg = 0;
4794 /* See if we already have an association of %g/%u/%U and
4796 for (t = temp_names; t; t = t->next)
4797 if (t->length == suffix_length
4798 && strncmp (t->suffix, suffix, suffix_length) == 0
4799 && t->unique == (c == 'u' || c == 'U' || c == 'j'))
4802 /* Make a new association if needed. %u and %j
4804 if (t == 0 || c == 'u' || c == 'j')
4808 t = xmalloc (sizeof (struct temp_name));
4809 t->next = temp_names;
4812 t->length = suffix_length;
4815 t->suffix = saved_suffix;
4816 saved_suffix = NULL;
4819 t->suffix = save_string (suffix, suffix_length);
4820 t->unique = (c == 'u' || c == 'U' || c == 'j');
4821 temp_filename = make_temp_file (t->suffix);
4822 temp_filename_length = strlen (temp_filename);
4823 t->filename = temp_filename;
4824 t->filename_length = temp_filename_length;
4828 free (saved_suffix);
4830 obstack_grow (&obstack, t->filename, t->filename_length);
4831 delete_this_arg = 1;
4839 for (i = 0; (int) i < n_infiles; i++)
4840 store_arg (infiles[i].name, 0, 0);
4844 obstack_grow (&obstack, input_filename, input_filename_length);
4851 struct prefix_list *pl = include_prefixes.plist;
4853 if (gcc_exec_prefix)
4855 do_spec_1 ("-iprefix", 1, NULL);
4856 /* Make this a separate argument. */
4857 do_spec_1 (" ", 0, NULL);
4858 do_spec_1 (gcc_exec_prefix, 1, NULL);
4859 do_spec_1 (" ", 0, NULL);
4862 if (target_system_root_changed ||
4863 (target_system_root && target_sysroot_hdrs_suffix))
4865 do_spec_1 ("-isysroot", 1, NULL);
4866 /* Make this a separate argument. */
4867 do_spec_1 (" ", 0, NULL);
4868 do_spec_1 (target_system_root, 1, NULL);
4869 if (target_sysroot_hdrs_suffix)
4870 do_spec_1 (target_sysroot_hdrs_suffix, 1, NULL);
4871 do_spec_1 (" ", 0, NULL);
4874 for (; pl; pl = pl->next)
4876 do_spec_1 ("-isystem", 1, NULL);
4877 /* Make this a separate argument. */
4878 do_spec_1 (" ", 0, NULL);
4879 do_spec_1 (pl->prefix, 1, NULL);
4880 do_spec_1 (" ", 0, NULL);
4887 int max = n_infiles;
4888 max += lang_specific_extra_outfiles;
4890 for (i = 0; i < max; i++)
4892 store_arg (outfiles[i], 0, 0);
4897 obstack_grow (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX));
4902 this_is_library_file = 1;
4906 outfiles[input_file_number] = NULL;
4910 this_is_output_file = 1;
4915 int cur_index = argbuf_index;
4916 /* Handle the {...} following the %W. */
4919 p = handle_braces (p + 1);
4922 /* End any pending argument. */
4925 obstack_1grow (&obstack, 0);
4926 string = obstack_finish (&obstack);
4927 if (this_is_library_file)
4928 string = find_file (string);
4929 store_arg (string, delete_this_arg, this_is_output_file);
4930 if (this_is_output_file)
4931 outfiles[input_file_number] = string;
4934 /* If any args were output, mark the last one for deletion
4936 if (argbuf_index != cur_index)
4937 record_temp_file (argbuf[argbuf_index - 1], 0, 1);
4941 /* %x{OPTION} records OPTION for %X to output. */
4947 /* Skip past the option value and make a copy. */
4952 string = save_string (p1 + 1, p - p1 - 2);
4954 /* See if we already recorded this option. */
4955 for (i = 0; i < n_linker_options; i++)
4956 if (! strcmp (string, linker_options[i]))
4962 /* This option is new; add it. */
4963 add_linker_option (string, strlen (string));
4967 /* Dump out the options accumulated previously using %x. */
4969 for (i = 0; i < n_linker_options; i++)
4971 do_spec_1 (linker_options[i], 1, NULL);
4972 /* Make each accumulated option a separate argument. */
4973 do_spec_1 (" ", 0, NULL);
4977 /* Dump out the options accumulated previously using -Wa,. */
4979 for (i = 0; i < n_assembler_options; i++)
4981 do_spec_1 (assembler_options[i], 1, NULL);
4982 /* Make each accumulated option a separate argument. */
4983 do_spec_1 (" ", 0, NULL);
4987 /* Dump out the options accumulated previously using -Wp,. */
4989 for (i = 0; i < n_preprocessor_options; i++)
4991 do_spec_1 (preprocessor_options[i], 1, NULL);
4992 /* Make each accumulated option a separate argument. */
4993 do_spec_1 (" ", 0, NULL);
4997 /* Here are digits and numbers that just process
4998 a certain constant string as a spec. */
5001 value = do_spec_1 (cc1_spec, 0, NULL);
5007 value = do_spec_1 (cc1plus_spec, 0, NULL);
5013 value = do_spec_1 (asm_spec, 0, NULL);
5019 value = do_spec_1 (asm_final_spec, 0, NULL);
5026 const char *const spec
5027 = (input_file_compiler->cpp_spec
5028 ? input_file_compiler->cpp_spec
5030 value = do_spec_1 (spec, 0, NULL);
5037 value = do_spec_1 (endfile_spec, 0, NULL);
5043 value = do_spec_1 (link_spec, 0, NULL);
5049 value = do_spec_1 (lib_spec, 0, NULL);
5055 value = do_spec_1 (libgcc_spec, 0, NULL);
5061 if (multilib_dir && strcmp (multilib_dir, ".") != 0)
5067 len = strlen (multilib_dir);
5068 obstack_blank (&obstack, len + 1);
5069 p = obstack_next_free (&obstack) - (len + 1);
5072 for (q = multilib_dir; *q ; ++q, ++p)
5073 *p = (IS_DIR_SEPARATOR (*q) ? '_' : *q);
5078 /* We assume there is a directory
5079 separator at the end of this string. */
5080 if (target_system_root)
5082 obstack_grow (&obstack, target_system_root,
5083 strlen (target_system_root));
5084 if (target_sysroot_suffix)
5085 obstack_grow (&obstack, target_sysroot_suffix,
5086 strlen (target_sysroot_suffix));
5091 value = do_spec_1 (startfile_spec, 0, NULL);
5096 /* Here we define characters other than letters and digits. */
5099 p = handle_braces (p);
5105 p = handle_spec_function (p);
5111 obstack_1grow (&obstack, '%');
5118 while (p[len] && p[len] != ' ' && p[len] != '%')
5120 suffix_subst = save_string (p - 1, len + 1);
5125 /* Henceforth ignore the option(s) matching the pattern
5130 int have_wildcard = 0;
5133 while (p[len] && p[len] != ' ' && p[len] != '\t')
5136 if (p[len-1] == '*')
5139 for (i = 0; i < n_switches; i++)
5140 if (!strncmp (switches[i].part1, p, len - have_wildcard)
5141 && (have_wildcard || switches[i].part1[len] == '\0'))
5143 switches[i].live_cond = SWITCH_IGNORE;
5144 switches[i].validated = 1;
5152 if (soft_matched_part)
5154 do_spec_1 (soft_matched_part, 1, NULL);
5155 do_spec_1 (" ", 0, NULL);
5158 /* Catch the case where a spec string contains something like
5159 '%{foo:%*}'. ie there is no * in the pattern on the left
5160 hand side of the :. */
5161 error ("spec failure: '%%*' has not been initialized by pattern match");
5164 /* Process a string found as the value of a spec given by name.
5165 This feature allows individual machine descriptions
5166 to add and use their own specs.
5167 %[...] modifies -D options the way %P does;
5168 %(...) uses the spec unmodified. */
5170 error ("warning: use of obsolete %%[ operator in specs");
5173 const char *name = p;
5174 struct spec_list *sl;
5177 /* The string after the S/P is the name of a spec that is to be
5179 while (*p && *p != ')' && *p != ']')
5182 /* See if it's in the list. */
5183 for (len = p - name, sl = specs; sl; sl = sl->next)
5184 if (sl->name_len == len && !strncmp (sl->name, name, len))
5186 name = *(sl->ptr_spec);
5188 notice ("Processing spec %c%s%c, which is '%s'\n",
5189 c, sl->name, (c == '(') ? ')' : ']', name);
5198 value = do_spec_1 (name, 0, NULL);
5204 char *x = alloca (strlen (name) * 2 + 1);
5206 const char *y = name;
5209 /* Copy all of NAME into BUF, but put __ after
5210 every -D and at the end of each arg. */
5213 if (! strncmp (y, "-D", 2))
5224 && (*y == ' ' || *y == '\t' || *y == '='
5225 || *y == '}' || *y == 0))
5238 value = do_spec_1 (buf, 0, NULL);
5244 /* Discard the closing paren or bracket. */
5251 error ("spec failure: unrecognized spec option '%c'", c);
5257 /* Backslash: treat next character as ordinary. */
5262 /* Ordinary character: put it into the current argument. */
5263 obstack_1grow (&obstack, c);
5267 /* End of string. If we are processing a spec function, we need to
5268 end any pending argument. */
5269 if (processing_spec_function && arg_going)
5271 obstack_1grow (&obstack, 0);
5272 string = obstack_finish (&obstack);
5273 if (this_is_library_file)
5274 string = find_file (string);
5275 store_arg (string, delete_this_arg, this_is_output_file);
5276 if (this_is_output_file)
5277 outfiles[input_file_number] = string;
5284 /* Look up a spec function. */
5286 static const struct spec_function *
5287 lookup_spec_function (const char *name)
5289 static const struct spec_function * const spec_function_tables[] =
5291 static_spec_functions,
5292 lang_specific_spec_functions,
5294 const struct spec_function *sf;
5297 for (i = 0; i < ARRAY_SIZE (spec_function_tables); i++)
5299 for (sf = spec_function_tables[i]; sf->name != NULL; sf++)
5300 if (strcmp (sf->name, name) == 0)
5307 /* Evaluate a spec function. */
5310 eval_spec_function (const char *func, const char *args)
5312 const struct spec_function *sf;
5313 const char *funcval;
5315 /* Saved spec processing context. */
5316 int save_argbuf_index;
5317 int save_argbuf_length;
5318 const char **save_argbuf;
5321 int save_delete_this_arg;
5322 int save_this_is_output_file;
5323 int save_this_is_library_file;
5324 int save_input_from_pipe;
5325 const char *save_suffix_subst;
5328 sf = lookup_spec_function (func);
5330 fatal ("unknown spec function `%s'", func);
5332 /* Push the spec processing context. */
5333 save_argbuf_index = argbuf_index;
5334 save_argbuf_length = argbuf_length;
5335 save_argbuf = argbuf;
5337 save_arg_going = arg_going;
5338 save_delete_this_arg = delete_this_arg;
5339 save_this_is_output_file = this_is_output_file;
5340 save_this_is_library_file = this_is_library_file;
5341 save_input_from_pipe = input_from_pipe;
5342 save_suffix_subst = suffix_subst;
5344 /* Create a new spec processing context, and build the function
5348 if (do_spec_2 (args) < 0)
5349 fatal ("error in args to spec function `%s'", func);
5351 /* argbuf_index is an index for the next argument to be inserted, and
5352 so contains the count of the args already inserted. */
5354 funcval = (*sf->func) (argbuf_index, argbuf);
5356 /* Pop the spec processing context. */
5357 argbuf_index = save_argbuf_index;
5358 argbuf_length = save_argbuf_length;
5360 argbuf = save_argbuf;
5362 arg_going = save_arg_going;
5363 delete_this_arg = save_delete_this_arg;
5364 this_is_output_file = save_this_is_output_file;
5365 this_is_library_file = save_this_is_library_file;
5366 input_from_pipe = save_input_from_pipe;
5367 suffix_subst = save_suffix_subst;
5372 /* Handle a spec function call of the form:
5376 ARGS is processed as a spec in a separate context and split into an
5377 argument vector in the normal fashion. The function returns a string
5378 containing a spec which we then process in the caller's context, or
5379 NULL if no processing is required. */
5382 handle_spec_function (const char *p)
5385 const char *endp, *funcval;
5388 processing_spec_function++;
5390 /* Get the function name. */
5391 for (endp = p; *endp != '\0'; endp++)
5393 if (*endp == '(') /* ) */
5395 /* Only allow [A-Za-z0-9], -, and _ in function names. */
5396 if (!ISALNUM (*endp) && !(*endp == '-' || *endp == '_'))
5397 fatal ("malformed spec function name");
5399 if (*endp != '(') /* ) */
5400 fatal ("no arguments for spec function");
5401 func = save_string (p, endp - p);
5404 /* Get the arguments. */
5405 for (count = 0; *endp != '\0'; endp++)
5414 else if (*endp == '(') /* ) */
5419 fatal ("malformed spec function arguments");
5420 args = save_string (p, endp - p);
5423 /* p now points to just past the end of the spec function expression. */
5425 funcval = eval_spec_function (func, args);
5426 if (funcval != NULL && do_spec_1 (funcval, 0, NULL) < 0)
5432 processing_spec_function--;
5437 /* Inline subroutine of handle_braces. Returns true if the current
5438 input suffix matches the atom bracketed by ATOM and END_ATOM. */
5440 input_suffix_matches (const char *atom, const char *end_atom)
5442 return (input_suffix
5443 && !strncmp (input_suffix, atom, end_atom - atom)
5444 && input_suffix[end_atom - atom] == '\0');
5447 /* Inline subroutine of handle_braces. Returns true if a switch
5448 matching the atom bracketed by ATOM and END_ATOM appeared on the
5451 switch_matches (const char *atom, const char *end_atom, int starred)
5454 int len = end_atom - atom;
5455 int plen = starred ? len : -1;
5457 for (i = 0; i < n_switches; i++)
5458 if (!strncmp (switches[i].part1, atom, len)
5459 && (starred || switches[i].part1[len] == '\0')
5460 && check_live_switch (i, plen))
5466 /* Inline subroutine of handle_braces. Mark all of the switches which
5467 match ATOM (extends to END_ATOM; STARRED indicates whether there
5468 was a star after the atom) for later processing. */
5470 mark_matching_switches (const char *atom, const char *end_atom, int starred)
5473 int len = end_atom - atom;
5474 int plen = starred ? len : -1;
5476 for (i = 0; i < n_switches; i++)
5477 if (!strncmp (switches[i].part1, atom, len)
5478 && (starred || switches[i].part1[len] == '\0')
5479 && check_live_switch (i, plen))
5480 switches[i].ordering = 1;
5483 /* Inline subroutine of handle_braces. Process all the currently
5484 marked switches through give_switch, and clear the marks. */
5486 process_marked_switches (void)
5490 for (i = 0; i < n_switches; i++)
5491 if (switches[i].ordering == 1)
5493 switches[i].ordering = 0;
5498 /* Handle a %{ ... } construct. P points just inside the leading {.
5499 Returns a pointer one past the end of the brace block, or 0
5500 if we call do_spec_1 and that returns -1. */
5503 handle_braces (const char *p)
5505 const char *atom, *end_atom;
5506 const char *d_atom = NULL, *d_end_atom = NULL;
5513 bool a_must_be_last = false;
5514 bool ordered_set = false;
5515 bool disjunct_set = false;
5516 bool disj_matched = false;
5517 bool disj_starred = true;
5518 bool n_way_choice = false;
5519 bool n_way_matched = false;
5521 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
5528 /* Scan one "atom" (S in the description above of %{}, possibly
5529 with !, ., or * modifiers). */
5530 a_matched = a_is_suffix = a_is_starred = a_is_negated = false;
5534 p++, a_is_negated = true;
5538 p++, a_is_suffix = true;
5541 while (ISIDNUM(*p) || *p == '-' || *p == '+' || *p == '='
5542 || *p == ',' || *p == '.' || *p == '@')
5547 p++, a_is_starred = 1;
5550 if (*p == '&' || *p == '}')
5552 /* Substitute the switch(es) indicated by the current atom. */
5554 if (disjunct_set || n_way_choice || a_is_negated || a_is_suffix
5555 || atom == end_atom)
5558 mark_matching_switches (atom, end_atom, a_is_starred);
5561 process_marked_switches ();
5563 else if (*p == '|' || *p == ':')
5565 /* Substitute some text if the current atom appears as a switch
5567 disjunct_set = true;
5571 if (atom == end_atom)
5573 if (!n_way_choice || disj_matched || *p == '|'
5574 || a_is_negated || a_is_suffix || a_is_starred)
5577 /* An empty term may appear as the last choice of an
5578 N-way choice set; it means "otherwise". */
5579 a_must_be_last = true;
5580 disj_matched = !n_way_matched;
5581 disj_starred = false;
5585 if (a_is_suffix && a_is_starred)
5589 disj_starred = false;
5591 /* Don't bother testing this atom if we already have a
5593 if (!disj_matched && !n_way_matched)
5596 a_matched = input_suffix_matches (atom, end_atom);
5598 a_matched = switch_matches (atom, end_atom, a_is_starred);
5600 if (a_matched != a_is_negated)
5602 disj_matched = true;
5604 d_end_atom = end_atom;
5611 /* Found the body, that is, the text to substitute if the
5612 current disjunction matches. */
5613 p = process_brace_body (p + 1, d_atom, d_end_atom, disj_starred,
5614 disj_matched && !n_way_matched);
5618 /* If we have an N-way choice, reset state for the next
5622 n_way_choice = true;
5623 n_way_matched |= disj_matched;
5624 disj_matched = false;
5625 disj_starred = true;
5626 d_atom = d_end_atom = NULL;
5633 while (*p++ != '}');
5640 /* Subroutine of handle_braces. Scan and process a brace substitution body
5641 (X in the description of %{} syntax). P points one past the colon;
5642 ATOM and END_ATOM bracket the first atom which was found to be true
5643 (present) in the current disjunction; STARRED indicates whether all
5644 the atoms in the current disjunction were starred (for syntax validation);
5645 MATCHED indicates whether the disjunction matched or not, and therefore
5646 whether or not the body is to be processed through do_spec_1 or just
5647 skipped. Returns a pointer to the closing } or ;, or 0 if do_spec_1
5651 process_brace_body (const char *p, const char *atom, const char *end_atom,
5652 int starred, int matched)
5654 const char *body, *end_body;
5655 unsigned int nesting_level;
5656 bool have_subst = false;
5658 /* Locate the closing } or ;, honoring nested braces.
5659 Trim trailing whitespace. */
5668 if (!--nesting_level)
5671 else if (*p == ';' && nesting_level == 1)
5673 else if (*p == '%' && p[1] == '*' && nesting_level == 1)
5675 else if (*p == '\0')
5681 while (end_body[-1] == ' ' || end_body[-1] == '\t')
5684 if (have_subst && !starred)
5689 /* Copy the substitution body to permanent storage and execute it.
5690 If have_subst is false, this is a simple matter of running the
5691 body through do_spec_1... */
5692 char *string = save_string (body, end_body - body);
5695 if (do_spec_1 (string, 0, NULL) < 0)
5700 /* ... but if have_subst is true, we have to process the
5701 body once for each matching switch, with %* set to the
5702 variant part of the switch. */
5703 unsigned int hard_match_len = end_atom - atom;
5706 for (i = 0; i < n_switches; i++)
5707 if (!strncmp (switches[i].part1, atom, hard_match_len)
5708 && check_live_switch (i, hard_match_len))
5710 if (do_spec_1 (string, 0,
5711 &switches[i].part1[hard_match_len]) < 0)
5713 /* Pass any arguments this switch has. */
5715 suffix_subst = NULL;
5723 /* Return 0 iff switch number SWITCHNUM is obsoleted by a later switch
5724 on the command line. PREFIX_LENGTH is the length of XXX in an {XXX*}
5725 spec, or -1 if either exact match or %* is used.
5727 A -O switch is obsoleted by a later -O switch. A -f, -m, or -W switch
5728 whose value does not begin with "no-" is obsoleted by the same value
5729 with the "no-", similarly for a switch with the "no-" prefix. */
5732 check_live_switch (int switchnum, int prefix_length)
5734 const char *name = switches[switchnum].part1;
5737 /* In the common case of {<at-most-one-letter>*}, a negating
5738 switch would always match, so ignore that case. We will just
5739 send the conflicting switches to the compiler phase. */
5740 if (prefix_length >= 0 && prefix_length <= 1)
5743 /* If we already processed this switch and determined if it was
5744 live or not, return our past determination. */
5745 if (switches[switchnum].live_cond != 0)
5746 return switches[switchnum].live_cond > 0;
5748 /* Now search for duplicate in a manner that depends on the name. */
5752 for (i = switchnum + 1; i < n_switches; i++)
5753 if (switches[i].part1[0] == 'O')
5755 switches[switchnum].validated = 1;
5756 switches[switchnum].live_cond = SWITCH_FALSE;
5761 case 'W': case 'f': case 'm':
5762 if (! strncmp (name + 1, "no-", 3))
5764 /* We have Xno-YYY, search for XYYY. */
5765 for (i = switchnum + 1; i < n_switches; i++)
5766 if (switches[i].part1[0] == name[0]
5767 && ! strcmp (&switches[i].part1[1], &name[4]))
5769 switches[switchnum].validated = 1;
5770 switches[switchnum].live_cond = SWITCH_FALSE;
5776 /* We have XYYY, search for Xno-YYY. */
5777 for (i = switchnum + 1; i < n_switches; i++)
5778 if (switches[i].part1[0] == name[0]
5779 && switches[i].part1[1] == 'n'
5780 && switches[i].part1[2] == 'o'
5781 && switches[i].part1[3] == '-'
5782 && !strcmp (&switches[i].part1[4], &name[1]))
5784 switches[switchnum].validated = 1;
5785 switches[switchnum].live_cond = SWITCH_FALSE;
5792 /* Otherwise the switch is live. */
5793 switches[switchnum].live_cond = SWITCH_LIVE;
5797 /* Pass a switch to the current accumulating command
5798 in the same form that we received it.
5799 SWITCHNUM identifies the switch; it is an index into
5800 the vector of switches gcc received, which is `switches'.
5801 This cannot fail since it never finishes a command line.
5803 If OMIT_FIRST_WORD is nonzero, then we omit .part1 of the argument. */
5806 give_switch (int switchnum, int omit_first_word)
5808 if (switches[switchnum].live_cond == SWITCH_IGNORE)
5811 if (!omit_first_word)
5813 do_spec_1 ("-", 0, NULL);
5814 do_spec_1 (switches[switchnum].part1, 1, NULL);
5817 if (switches[switchnum].args != 0)
5820 for (p = switches[switchnum].args; *p; p++)
5822 const char *arg = *p;
5824 do_spec_1 (" ", 0, NULL);
5827 unsigned length = strlen (arg);
5830 while (length-- && !IS_DIR_SEPARATOR (arg[length]))
5831 if (arg[length] == '.')
5833 ((char *)arg)[length] = 0;
5837 do_spec_1 (arg, 1, NULL);
5839 ((char *)arg)[length] = '.';
5840 do_spec_1 (suffix_subst, 1, NULL);
5843 do_spec_1 (arg, 1, NULL);
5847 do_spec_1 (" ", 0, NULL);
5848 switches[switchnum].validated = 1;
5851 /* Search for a file named NAME trying various prefixes including the
5852 user's -B prefix and some standard ones.
5853 Return the absolute file name found. If nothing is found, return NAME. */
5856 find_file (const char *name)
5860 /* Try multilib_dir if it is defined. */
5861 if (multilib_os_dir != NULL)
5863 newname = find_a_file (&startfile_prefixes, name, R_OK, 1);
5865 /* If we don't find it in the multi library dir, then fall
5866 through and look for it in the normal places. */
5867 if (newname != NULL)
5871 newname = find_a_file (&startfile_prefixes, name, R_OK, 0);
5872 return newname ? newname : name;
5875 /* Determine whether a directory exists. If LINKER, return 0 for
5876 certain fixed names not needed by the linker. If not LINKER, it is
5877 only important to return 0 if the host machine has a small ARG_MAX
5881 is_directory (const char *path1, const char *path2, int linker)
5883 int len1 = strlen (path1);
5884 int len2 = strlen (path2);
5885 char *path = alloca (3 + len1 + len2);
5889 #ifndef SMALL_ARG_MAX
5894 /* Construct the path from the two parts. Ensure the string ends with "/.".
5895 The resulting path will be a directory even if the given path is a
5897 memcpy (path, path1, len1);
5898 memcpy (path + len1, path2, len2);
5899 cp = path + len1 + len2;
5900 if (!IS_DIR_SEPARATOR (cp[-1]))
5901 *cp++ = DIR_SEPARATOR;
5905 #ifndef FREEBSD_NATIVE
5906 /* Exclude directories that the linker is known to search. */
5909 && strcmp (path, concat (dir_separator_str, "lib",
5910 dir_separator_str, ".", NULL)) == 0)
5912 && strcmp (path, concat (dir_separator_str, "usr",
5913 dir_separator_str, "lib",
5914 dir_separator_str, ".", NULL)) == 0)))
5916 #endif /* FREEBSD_NATIVE */
5918 return (stat (path, &st) >= 0 && S_ISDIR (st.st_mode));
5921 /* Set up the various global variables to indicate that we're processing
5922 the input file named FILENAME. */
5925 set_input (const char *filename)
5929 input_filename = filename;
5930 input_filename_length = strlen (input_filename);
5932 input_basename = input_filename;
5933 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
5934 /* Skip drive name so 'x:foo' is handled properly. */
5935 if (input_basename[1] == ':')
5936 input_basename += 2;
5938 for (p = input_basename; *p; p++)
5939 if (IS_DIR_SEPARATOR (*p))
5940 input_basename = p + 1;
5942 /* Find a suffix starting with the last period,
5943 and set basename_length to exclude that suffix. */
5944 basename_length = strlen (input_basename);
5945 suffixed_basename_length = basename_length;
5946 p = input_basename + basename_length;
5947 while (p != input_basename && *p != '.')
5949 if (*p == '.' && p != input_basename)
5951 basename_length = p - input_basename;
5952 input_suffix = p + 1;
5957 /* If a spec for 'g', 'u', or 'U' is seen with -save-temps then
5958 we will need to do a stat on the input_filename. The
5959 INPUT_STAT_SET signals that the stat is needed. */
5963 /* On fatal signals, delete all the temporary files. */
5966 fatal_error (int signum)
5968 signal (signum, SIG_DFL);
5969 delete_failure_queue ();
5970 delete_temp_files ();
5971 /* Get the same signal again, this time not handled,
5972 so its normal effect occurs. */
5973 kill (getpid (), signum);
5976 extern int main (int, const char **);
5979 main (int argc, const char **argv)
5983 int linker_was_run = 0;
5984 int num_linker_inputs = 0;
5985 char *explicit_link_files;
5988 struct user_specs *uptr;
5990 p = argv[0] + strlen (argv[0]);
5991 while (p != argv[0] && !IS_DIR_SEPARATOR (p[-1]))
5995 xmalloc_set_program_name (programname);
5997 #ifdef GCC_DRIVER_HOST_INITIALIZATION
5998 /* Perform host dependent initialization when needed. */
5999 GCC_DRIVER_HOST_INITIALIZATION;
6002 gcc_init_libintl ();
6004 if (signal (SIGINT, SIG_IGN) != SIG_IGN)
6005 signal (SIGINT, fatal_error);
6007 if (signal (SIGHUP, SIG_IGN) != SIG_IGN)
6008 signal (SIGHUP, fatal_error);
6010 if (signal (SIGTERM, SIG_IGN) != SIG_IGN)
6011 signal (SIGTERM, fatal_error);
6013 if (signal (SIGPIPE, SIG_IGN) != SIG_IGN)
6014 signal (SIGPIPE, fatal_error);
6017 /* We *MUST* set SIGCHLD to SIG_DFL so that the wait4() call will
6018 receive the signal. A different setting is inheritable */
6019 signal (SIGCHLD, SIG_DFL);
6022 /* Allocate the argument vector. */
6025 obstack_init (&obstack);
6027 /* Build multilib_select, et. al from the separate lines that make up each
6028 multilib selection. */
6030 const char *const *q = multilib_raw;
6033 obstack_init (&multilib_obstack);
6034 while ((p = *q++) != (char *) 0)
6035 obstack_grow (&multilib_obstack, p, strlen (p));
6037 obstack_1grow (&multilib_obstack, 0);
6038 multilib_select = obstack_finish (&multilib_obstack);
6040 q = multilib_matches_raw;
6041 while ((p = *q++) != (char *) 0)
6042 obstack_grow (&multilib_obstack, p, strlen (p));
6044 obstack_1grow (&multilib_obstack, 0);
6045 multilib_matches = obstack_finish (&multilib_obstack);
6047 q = multilib_exclusions_raw;
6048 while ((p = *q++) != (char *) 0)
6049 obstack_grow (&multilib_obstack, p, strlen (p));
6051 obstack_1grow (&multilib_obstack, 0);
6052 multilib_exclusions = obstack_finish (&multilib_obstack);
6055 for (i = 0; i < ARRAY_SIZE (multilib_defaults_raw); i++)
6058 obstack_1grow (&multilib_obstack, ' ');
6059 obstack_grow (&multilib_obstack,
6060 multilib_defaults_raw[i],
6061 strlen (multilib_defaults_raw[i]));
6065 obstack_1grow (&multilib_obstack, 0);
6066 multilib_defaults = obstack_finish (&multilib_obstack);
6069 /* Set up to remember the pathname of gcc and any options
6070 needed for collect. We use argv[0] instead of programname because
6071 we need the complete pathname. */
6072 obstack_init (&collect_obstack);
6073 obstack_grow (&collect_obstack, "COLLECT_GCC=", sizeof ("COLLECT_GCC=") - 1);
6074 obstack_grow (&collect_obstack, argv[0], strlen (argv[0]) + 1);
6075 putenv (obstack_finish (&collect_obstack));
6077 #ifdef INIT_ENVIRONMENT
6078 /* Set up any other necessary machine specific environment variables. */
6079 putenv (INIT_ENVIRONMENT);
6082 /* Make a table of what switches there are (switches, n_switches).
6083 Make a table of specified input files (infiles, n_infiles).
6084 Decode switches that are handled locally. */
6086 process_command (argc, argv);
6088 /* Initialize the vector of specs to just the default.
6089 This means one element containing 0s, as a terminator. */
6091 compilers = xmalloc (sizeof default_compilers);
6092 memcpy (compilers, default_compilers, sizeof default_compilers);
6093 n_compilers = n_default_compilers;
6095 /* Read specs from a file if there is one. */
6097 #ifdef FREEBSD_NATIVE
6098 just_machine_suffix = "";
6099 #else /* FREEBSD_NATIVE */
6100 machine_suffix = concat (spec_machine, dir_separator_str,
6101 spec_version, dir_separator_str, NULL);
6102 just_machine_suffix = concat (spec_machine, dir_separator_str, NULL);
6103 #endif /* FREEBSD_NATIVE */
6105 specs_file = find_a_file (&startfile_prefixes, "specs", R_OK, 0);
6106 /* Read the specs file unless it is a default one. */
6107 if (specs_file != 0 && strcmp (specs_file, "specs"))
6108 read_specs (specs_file, TRUE);
6112 /* We need to check standard_exec_prefix/just_machine_suffix/specs
6113 for any override of as, ld and libraries. */
6114 specs_file = (char *) alloca (strlen (FBSD_DATA_PREFIX)
6115 + strlen (just_machine_suffix)
6116 + sizeof ("specs"));
6118 strcpy (specs_file, FBSD_DATA_PREFIX);
6119 strcat (specs_file, just_machine_suffix);
6120 strcat (specs_file, "specs");
6121 if (access (specs_file, R_OK) == 0)
6122 read_specs (specs_file, TRUE);
6124 /* Process any configure-time defaults specified for the command line
6125 options, via OPTION_DEFAULT_SPECS. */
6126 for (i = 0; i < ARRAY_SIZE (option_default_specs); i++)
6127 do_option_spec (option_default_specs[i].name,
6128 option_default_specs[i].spec);
6130 /* Process DRIVER_SELF_SPECS, adding any new options to the end
6131 of the command line. */
6133 for (i = 0; i < ARRAY_SIZE (driver_self_specs); i++)
6134 do_self_spec (driver_self_specs[i]);
6136 /* If not cross-compiling, look for executables in the standard
6138 if (*cross_compile == '0')
6140 if (*md_exec_prefix)
6142 add_prefix (&exec_prefixes, md_exec_prefix, "GCC",
6143 PREFIX_PRIORITY_LAST, 0, NULL, 0);
6147 /* Process sysroot_suffix_spec. */
6148 if (*sysroot_suffix_spec != 0
6149 && do_spec_2 (sysroot_suffix_spec) == 0)
6151 if (argbuf_index > 1)
6152 error ("spec failure: more than one arg to SYSROOT_SUFFIX_SPEC.");
6153 else if (argbuf_index == 1)
6154 target_sysroot_suffix = xstrdup (argbuf[argbuf_index -1]);
6157 /* Process sysroot_hdrs_suffix_spec. */
6158 if (*sysroot_hdrs_suffix_spec != 0
6159 && do_spec_2 (sysroot_hdrs_suffix_spec) == 0)
6161 if (argbuf_index > 1)
6162 error ("spec failure: more than one arg to SYSROOT_HEADERS_SUFFIX_SPEC.");
6163 else if (argbuf_index == 1)
6164 target_sysroot_hdrs_suffix = xstrdup (argbuf[argbuf_index -1]);
6167 /* Look for startfiles in the standard places. */
6168 if (*startfile_prefix_spec != 0
6169 && do_spec_2 (startfile_prefix_spec) == 0
6170 && do_spec_1 (" ", 0, NULL) == 0)
6173 for (ndx = 0; ndx < argbuf_index; ndx++)
6174 add_sysrooted_prefix (&startfile_prefixes, argbuf[ndx], "BINUTILS",
6175 PREFIX_PRIORITY_LAST, 0, NULL, 1);
6177 /* We should eventually get rid of all these and stick to
6178 startfile_prefix_spec exclusively. */
6179 else if (*cross_compile == '0' || target_system_root)
6181 if (*md_exec_prefix)
6182 add_sysrooted_prefix (&startfile_prefixes, md_exec_prefix, "GCC",
6183 PREFIX_PRIORITY_LAST, 0, NULL, 1);
6185 if (*md_startfile_prefix)
6186 add_sysrooted_prefix (&startfile_prefixes, md_startfile_prefix,
6187 "GCC", PREFIX_PRIORITY_LAST, 0, NULL, 1);
6189 if (*md_startfile_prefix_1)
6190 add_sysrooted_prefix (&startfile_prefixes, md_startfile_prefix_1,
6191 "GCC", PREFIX_PRIORITY_LAST, 0, NULL, 1);
6193 /* If standard_startfile_prefix is relative, base it on
6194 standard_exec_prefix. This lets us move the installed tree
6195 as a unit. If GCC_EXEC_PREFIX is defined, base
6196 standard_startfile_prefix on that as well.
6198 If the prefix is relative, only search it for native compilers;
6199 otherwise we will search a directory containing host libraries. */
6200 if (IS_ABSOLUTE_PATH (standard_startfile_prefix))
6201 add_sysrooted_prefix (&startfile_prefixes,
6202 standard_startfile_prefix, "BINUTILS",
6203 PREFIX_PRIORITY_LAST, 0, NULL, 1);
6204 else if (*cross_compile == '0')
6206 if (gcc_exec_prefix)
6207 add_prefix (&startfile_prefixes,
6208 concat (gcc_exec_prefix, machine_suffix,
6209 standard_startfile_prefix, NULL),
6210 NULL, PREFIX_PRIORITY_LAST, 0, NULL, 1);
6211 add_prefix (&startfile_prefixes,
6212 concat (standard_exec_prefix,
6214 standard_startfile_prefix, NULL),
6215 NULL, PREFIX_PRIORITY_LAST, 0, NULL, 1);
6218 #ifndef FREEBSD_NATIVE
6219 add_sysrooted_prefix (&startfile_prefixes, standard_startfile_prefix_1,
6220 "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL, 1);
6221 add_sysrooted_prefix (&startfile_prefixes, standard_startfile_prefix_2,
6222 "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL, 1);
6223 #endif /* not FREEBSD_NATIVE */
6224 #if 0 /* Can cause surprises, and one can use -B./ instead. */
6225 add_prefix (&startfile_prefixes, "./", NULL,
6226 PREFIX_PRIORITY_LAST, 1, NULL, 0);
6230 /* Process any user specified specs in the order given on the command
6232 for (uptr = user_specs_head; uptr; uptr = uptr->next)
6234 char *filename = find_a_file (&startfile_prefixes, uptr->filename,
6236 read_specs (filename ? filename : uptr->filename, FALSE);
6239 /* If we have a GCC_EXEC_PREFIX envvar, modify it for cpp's sake. */
6240 if (gcc_exec_prefix)
6241 gcc_exec_prefix = concat (gcc_exec_prefix, spec_machine, dir_separator_str,
6242 spec_version, dir_separator_str, NULL);
6244 /* Now we have the specs.
6245 Set the `valid' bits for switches that match anything in any spec. */
6247 validate_all_switches ();
6249 /* Now that we have the switches and the specs, set
6250 the subdirectory based on the options. */
6251 set_multilib_dir ();
6253 /* Warn about any switches that no pass was interested in. */
6255 for (i = 0; (int) i < n_switches; i++)
6256 if (! switches[i].validated)
6257 error ("unrecognized option `-%s'", switches[i].part1);
6259 /* Obey some of the options. */
6261 if (print_search_dirs)
6263 printf (_("install: %s%s\n"), standard_exec_prefix, machine_suffix);
6264 printf (_("programs: %s\n"), build_search_list (&exec_prefixes, "", 0));
6265 printf (_("libraries: %s\n"), build_search_list (&startfile_prefixes, "", 0));
6269 if (print_file_name)
6271 printf ("%s\n", find_file (print_file_name));
6275 if (print_prog_name)
6277 char *newname = find_a_file (&exec_prefixes, print_prog_name, X_OK, 0);
6278 printf ("%s\n", (newname ? newname : print_prog_name));
6282 if (print_multi_lib)
6284 print_multilib_info ();
6288 if (print_multi_directory)
6290 if (multilib_dir == NULL)
6293 printf ("%s\n", multilib_dir);
6297 if (print_multi_os_directory)
6299 if (multilib_os_dir == NULL)
6302 printf ("%s\n", multilib_os_dir);
6306 if (target_help_flag)
6308 /* Print if any target specific options. */
6310 /* We do not exit here. Instead we have created a fake input file
6311 called 'target-dummy' which needs to be compiled, and we pass this
6312 on to the various sub-processes, along with the --target-help
6316 if (print_help_list)
6322 printf (_("\nFor bug reporting instructions, please see:\n"));
6323 printf ("%s.\n", bug_report_url);
6328 /* We do not exit here. Instead we have created a fake input file
6329 called 'help-dummy' which needs to be compiled, and we pass this
6330 on the various sub-processes, along with the --help switch. */
6338 notice ("Configured with: %s\n", configuration_arguments);
6340 #ifdef THREAD_MODEL_SPEC
6341 /* We could have defined THREAD_MODEL_SPEC to "%*" by default,
6342 but there's no point in doing all this processing just to get
6343 thread_model back. */
6344 obstack_init (&obstack);
6345 do_spec_1 (THREAD_MODEL_SPEC, 0, thread_model);
6346 obstack_1grow (&obstack, '\0');
6347 thrmod = obstack_finish (&obstack);
6349 thrmod = thread_model;
6352 notice ("Thread model: %s\n", thrmod);
6354 /* compiler_version is truncated at the first space when initialized
6355 from version string, so truncate version_string at the first space
6356 before comparing. */
6357 for (n = 0; version_string[n]; n++)
6358 if (version_string[n] == ' ')
6361 if (! strncmp (version_string, compiler_version, n)
6362 && compiler_version[n] == 0)
6363 notice ("gcc version %s\n", version_string);
6365 notice ("gcc driver version %s executing gcc version %s\n",
6366 version_string, compiler_version);
6372 if (n_infiles == added_libraries)
6373 fatal ("No input files specified");
6375 /* Make a place to record the compiler output file names
6376 that correspond to the input files. */
6379 i += lang_specific_extra_outfiles;
6380 outfiles = xcalloc (i, sizeof (char *));
6382 /* Record which files were specified explicitly as link input. */
6384 explicit_link_files = xcalloc (1, n_infiles);
6388 int lang_n_infiles = 0;
6389 for (i = 0; (int) i < n_infiles; i++)
6391 const char *name = infiles[i].name;
6392 struct compiler *compiler
6393 = lookup_compiler (name, strlen (name), infiles[i].language);
6394 if (compiler == NULL)
6395 error ("%s: linker input file unused because linking not done",
6397 else if (lang_n_infiles > 0 && compiler != input_file_compiler)
6398 fatal ("cannot specify -o with -c or -S and multiple languages");
6402 input_file_compiler = compiler;
6407 for (i = 0; (int) i < (combine_inputs ? 1 : n_infiles); i++)
6409 int this_file_error = 0;
6411 /* Tell do_spec what to substitute for %i. */
6413 input_file_number = i;
6414 set_input (infiles[i].name);
6416 /* Use the same thing in %o, unless cp->spec says otherwise. */
6418 outfiles[i] = input_filename;
6420 /* Figure out which compiler from the file's suffix. */
6422 if (! combine_inputs)
6424 = lookup_compiler (infiles[i].name, input_filename_length,
6425 infiles[i].language);
6427 if (input_file_compiler)
6429 /* Ok, we found an applicable compiler. Run its spec. */
6431 if (input_file_compiler->spec[0] == '#')
6433 error ("%s: %s compiler not installed on this system",
6434 input_filename, &input_file_compiler->spec[1]);
6435 this_file_error = 1;
6439 value = do_spec (input_file_compiler->spec);
6441 this_file_error = 1;
6445 /* If this file's name does not contain a recognized suffix,
6446 record it as explicit linker input. */
6449 explicit_link_files[i] = 1;
6451 /* Clear the delete-on-failure queue, deleting the files in it
6452 if this compilation failed. */
6454 if (this_file_error)
6456 delete_failure_queue ();
6459 /* If this compilation succeeded, don't delete those files later. */
6460 clear_failure_queue ();
6463 /* Reset the output file name to the first input file name, for use
6464 with %b in LINK_SPEC on a target that prefers not to emit a.out
6467 set_input (infiles[0].name);
6469 if (error_count == 0)
6471 /* Make sure INPUT_FILE_NUMBER points to first available open
6473 input_file_number = n_infiles;
6474 if (lang_specific_pre_link ())
6478 /* Determine if there are any linker input files. */
6479 num_linker_inputs = 0;
6480 for (i = 0; (int) i < n_infiles; i++)
6481 if (explicit_link_files[i] || outfiles[i] != NULL)
6482 num_linker_inputs++;
6484 /* Run ld to link all the compiler output files. */
6486 if (num_linker_inputs > 0 && error_count == 0)
6488 int tmp = execution_count;
6490 /* We'll use ld if we can't find collect2. */
6491 if (! strcmp (linker_name_spec, "collect2"))
6493 char *s = find_a_file (&exec_prefixes, "collect2", X_OK, 0);
6495 linker_name_spec = "ld";
6497 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
6499 putenv_from_prefixes (&exec_prefixes, "COMPILER_PATH");
6500 putenv_from_prefixes (&startfile_prefixes, LIBRARY_PATH_ENV);
6502 value = do_spec (link_command_spec);
6505 linker_was_run = (tmp != execution_count);
6508 /* If options said don't run linker,
6509 complain about input files to be given to the linker. */
6511 if (! linker_was_run && error_count == 0)
6512 for (i = 0; (int) i < n_infiles; i++)
6513 if (explicit_link_files[i])
6514 error ("%s: linker input file unused because linking not done",
6517 /* Delete some or all of the temporary files we made. */
6520 delete_failure_queue ();
6521 delete_temp_files ();
6523 if (print_help_list)
6525 printf (("\nFor bug reporting instructions, please see:\n"));
6526 printf ("%s\n", bug_report_url);
6529 return (signal_count != 0 ? 2
6530 : error_count > 0 ? (pass_exit_codes ? greatest_status : 1)
6534 /* Find the proper compilation spec for the file name NAME,
6535 whose length is LENGTH. LANGUAGE is the specified language,
6536 or 0 if this file is to be passed to the linker. */
6538 static struct compiler *
6539 lookup_compiler (const char *name, size_t length, const char *language)
6541 struct compiler *cp;
6543 /* If this was specified by the user to be a linker input, indicate that. */
6544 if (language != 0 && language[0] == '*')
6547 /* Otherwise, look for the language, if one is spec'd. */
6550 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6551 if (cp->suffix[0] == '@' && !strcmp (cp->suffix + 1, language))
6554 error ("language %s not recognized", language);
6558 /* Look for a suffix. */
6559 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6561 if (/* The suffix `-' matches only the file name `-'. */
6562 (!strcmp (cp->suffix, "-") && !strcmp (name, "-"))
6563 || (strlen (cp->suffix) < length
6564 /* See if the suffix matches the end of NAME. */
6565 && !strcmp (cp->suffix,
6566 name + length - strlen (cp->suffix))
6571 #if defined (OS2) ||defined (HAVE_DOS_BASED_FILE_SYSTEM)
6572 /* look again, but case-insensitively this time. */
6574 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6576 if (/* The suffix `-' matches only the file name `-'. */
6577 (!strcmp (cp->suffix, "-") && !strcmp (name, "-"))
6578 || (strlen (cp->suffix) < length
6579 /* See if the suffix matches the end of NAME. */
6580 && ((!strcmp (cp->suffix,
6581 name + length - strlen (cp->suffix))
6582 || !strpbrk (cp->suffix, "ABCDEFGHIJKLMNOPQRSTUVWXYZ"))
6583 && !strcasecmp (cp->suffix,
6584 name + length - strlen (cp->suffix)))
6590 if (cp >= compilers)
6592 if (cp->spec[0] != '@')
6593 /* A non-alias entry: return it. */
6596 /* An alias entry maps a suffix to a language.
6597 Search for the language; pass 0 for NAME and LENGTH
6598 to avoid infinite recursion if language not found. */
6599 return lookup_compiler (NULL, 0, cp->spec + 1);
6605 save_string (const char *s, int len)
6607 char *result = xmalloc (len + 1);
6609 memcpy (result, s, len);
6615 pfatal_with_name (const char *name)
6617 perror_with_name (name);
6618 delete_temp_files ();
6623 perror_with_name (const char *name)
6625 error ("%s: %s", name, xstrerror (errno));
6629 pfatal_pexecute (const char *errmsg_fmt, const char *errmsg_arg)
6633 int save_errno = errno;
6635 /* Space for trailing '\0' is in %s. */
6636 char *msg = xmalloc (strlen (errmsg_fmt) + strlen (errmsg_arg));
6637 sprintf (msg, errmsg_fmt, errmsg_arg);
6643 pfatal_with_name (errmsg_fmt);
6646 /* Output an error message and exit. */
6651 fatal ("internal gcc abort");
6654 /* Output an error message and exit. */
6657 fatal (const char *msgid, ...)
6661 va_start (ap, msgid);
6663 fprintf (stderr, "%s: ", programname);
6664 vfprintf (stderr, _(msgid), ap);
6666 fprintf (stderr, "\n");
6667 delete_temp_files ();
6672 error (const char *msgid, ...)
6676 va_start (ap, msgid);
6677 fprintf (stderr, "%s: ", programname);
6678 vfprintf (stderr, _(msgid), ap);
6681 fprintf (stderr, "\n");
6685 notice (const char *msgid, ...)
6689 va_start (ap, msgid);
6690 vfprintf (stderr, _(msgid), ap);
6695 validate_switches_from_spec (const char *spec)
6697 const char *p = spec;
6700 if (c == '%' && (*p == '{' || *p == '<' || (*p == 'W' && *++p == '{')))
6701 /* We have a switch spec. */
6702 p = validate_switches (p + 1);
6706 validate_all_switches (void)
6708 struct compiler *comp;
6709 struct spec_list *spec;
6711 for (comp = compilers; comp->spec; comp++)
6712 validate_switches_from_spec (comp->spec);
6714 /* Look through the linked list of specs read from the specs file. */
6715 for (spec = specs; spec; spec = spec->next)
6716 validate_switches_from_spec (*spec->ptr_spec);
6718 validate_switches_from_spec (link_command_spec);
6721 /* Look at the switch-name that comes after START
6722 and mark as valid all supplied switches that match it. */
6725 validate_switches (const char *start)
6727 const char *p = start;
6731 bool suffix = false;
6732 bool starred = false;
6734 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
6747 while (ISIDNUM (*p) || *p == '-' || *p == '+' || *p == '='
6748 || *p == ',' || *p == '.' || *p == '@')
6753 starred = true, p++;
6759 /* Mark all matching switches as valid. */
6760 for (i = 0; i < n_switches; i++)
6761 if (!strncmp (switches[i].part1, atom, len)
6762 && (starred || switches[i].part1[len] == 0))
6763 switches[i].validated = 1;
6767 if (*p && (p[-1] == '|' || p[-1] == '&'))
6770 if (*p && p[-1] == ':')
6772 while (*p && *p != ';' && *p != '}')
6777 if (*p == '{' || *p == '<')
6778 p = validate_switches (p+1);
6779 else if (p[0] == 'W' && p[1] == '{')
6780 p = validate_switches (p+2);
6787 if (*p && p[-1] == ';')
6801 static struct mdswitchstr *mdswitches;
6802 static int n_mdswitches;
6804 /* Check whether a particular argument was used. The first time we
6805 canonicalize the switches to keep only the ones we care about. */
6808 used_arg (const char *p, int len)
6813 const char *replace;
6818 static struct mswitchstr *mswitches;
6819 static int n_mswitches;
6824 struct mswitchstr *matches;
6828 /* Break multilib_matches into the component strings of string
6829 and replacement string. */
6830 for (q = multilib_matches; *q != '\0'; q++)
6834 matches = alloca ((sizeof (struct mswitchstr)) * cnt);
6836 q = multilib_matches;
6846 matches[i].len = q - matches[i].str;
6848 matches[i].replace = ++q;
6849 while (*q != ';' && *q != '\0')
6855 matches[i].rep_len = q - matches[i].replace;
6861 /* Now build a list of the replacement string for switches that we care
6862 about. Make sure we allocate at least one entry. This prevents
6863 xmalloc from calling fatal, and prevents us from re-executing this
6866 = xmalloc (sizeof (struct mswitchstr)
6867 * (n_mdswitches + (n_switches ? n_switches : 1)));
6868 for (i = 0; i < n_switches; i++)
6870 int xlen = strlen (switches[i].part1);
6871 for (j = 0; j < cnt; j++)
6872 if (xlen == matches[j].len
6873 && ! strncmp (switches[i].part1, matches[j].str, xlen))
6875 mswitches[n_mswitches].str = matches[j].replace;
6876 mswitches[n_mswitches].len = matches[j].rep_len;
6877 mswitches[n_mswitches].replace = (char *) 0;
6878 mswitches[n_mswitches].rep_len = 0;
6884 /* Add MULTILIB_DEFAULTS switches too, as long as they were not present
6885 on the command line nor any options mutually incompatible with
6887 for (i = 0; i < n_mdswitches; i++)
6891 for (q = multilib_options; *q != '\0'; q++)
6897 while (strncmp (q, mdswitches[i].str, mdswitches[i].len) != 0
6898 || strchr (" /", q[mdswitches[i].len]) == NULL)
6900 while (*q != ' ' && *q != '/' && *q != '\0')
6907 if (*q != ' ' && *q != '\0')
6909 while (*r != ' ' && *r != '\0')
6912 while (*q != ' ' && *q != '/' && *q != '\0')
6915 if (used_arg (r, q - r))
6920 mswitches[n_mswitches].str = mdswitches[i].str;
6921 mswitches[n_mswitches].len = mdswitches[i].len;
6922 mswitches[n_mswitches].replace = (char *) 0;
6923 mswitches[n_mswitches].rep_len = 0;
6936 for (i = 0; i < n_mswitches; i++)
6937 if (len == mswitches[i].len && ! strncmp (p, mswitches[i].str, len))
6944 default_arg (const char *p, int len)
6948 for (i = 0; i < n_mdswitches; i++)
6949 if (len == mdswitches[i].len && ! strncmp (p, mdswitches[i].str, len))
6955 /* Work out the subdirectory to use based on the options. The format of
6956 multilib_select is a list of elements. Each element is a subdirectory
6957 name followed by a list of options followed by a semicolon. The format
6958 of multilib_exclusions is the same, but without the preceding
6959 directory. First gcc will check the exclusions, if none of the options
6960 beginning with an exclamation point are present, and all of the other
6961 options are present, then we will ignore this completely. Passing
6962 that, gcc will consider each multilib_select in turn using the same
6963 rules for matching the options. If a match is found, that subdirectory
6967 set_multilib_dir (void)
6970 unsigned int this_path_len;
6971 const char *this_path, *this_arg;
6972 const char *start, *end;
6974 int ok, ndfltok, first;
6977 start = multilib_defaults;
6978 while (*start == ' ' || *start == '\t')
6980 while (*start != '\0')
6983 while (*start != ' ' && *start != '\t' && *start != '\0')
6985 while (*start == ' ' || *start == '\t')
6993 mdswitches = xmalloc (sizeof (struct mdswitchstr) * n_mdswitches);
6994 for (start = multilib_defaults; *start != '\0'; start = end + 1)
6996 while (*start == ' ' || *start == '\t')
7002 for (end = start + 1;
7003 *end != ' ' && *end != '\t' && *end != '\0'; end++)
7006 obstack_grow (&multilib_obstack, start, end - start);
7007 obstack_1grow (&multilib_obstack, 0);
7008 mdswitches[i].str = obstack_finish (&multilib_obstack);
7009 mdswitches[i++].len = end - start;
7016 p = multilib_exclusions;
7019 /* Ignore newlines. */
7026 /* Check the arguments. */
7040 while (*p != ' ' && *p != ';')
7047 if (*this_arg != '!')
7055 ok = used_arg (this_arg, p - this_arg);
7070 p = multilib_select;
7073 /* Ignore newlines. */
7080 /* Get the initial path. */
7088 this_path_len = p - this_path;
7090 /* Check the arguments. */
7106 while (*p != ' ' && *p != ';')
7113 if (*this_arg != '!')
7121 /* If this is a default argument, we can just ignore it.
7122 This is true even if this_arg begins with '!'. Beginning
7123 with '!' does not mean that this argument is necessarily
7124 inappropriate for this library: it merely means that
7125 there is a more specific library which uses this
7126 argument. If this argument is a default, we need not
7127 consider that more specific library. */
7128 ok = used_arg (this_arg, p - this_arg);
7135 if (default_arg (this_arg, p - this_arg))
7144 if (this_path_len != 1
7145 || this_path[0] != '.')
7147 char *new_multilib_dir = xmalloc (this_path_len + 1);
7150 strncpy (new_multilib_dir, this_path, this_path_len);
7151 new_multilib_dir[this_path_len] = '\0';
7152 q = strchr (new_multilib_dir, ':');
7155 multilib_dir = new_multilib_dir;
7162 const char *q = this_path, *end = this_path + this_path_len;
7164 while (q < end && *q != ':')
7168 char *new_multilib_os_dir = xmalloc (end - q);
7169 memcpy (new_multilib_os_dir, q + 1, end - q - 1);
7170 new_multilib_os_dir[end - q - 1] = '\0';
7171 multilib_os_dir = new_multilib_os_dir;
7179 if (multilib_dir == NULL && multilib_os_dir != NULL
7180 && strcmp (multilib_os_dir, ".") == 0)
7182 free ((char *) multilib_os_dir);
7183 multilib_os_dir = NULL;
7185 else if (multilib_dir != NULL && multilib_os_dir == NULL)
7186 multilib_os_dir = multilib_dir;
7189 /* Print out the multiple library subdirectory selection
7190 information. This prints out a series of lines. Each line looks
7191 like SUBDIRECTORY;@OPTION@OPTION, with as many options as is
7192 required. Only the desired options are printed out, the negative
7193 matches. The options are print without a leading dash. There are
7194 no spaces to make it easy to use the information in the shell.
7195 Each subdirectory is printed only once. This assumes the ordering
7196 generated by the genmultilib script. Also, we leave out ones that match
7200 print_multilib_info (void)
7202 const char *p = multilib_select;
7203 const char *last_path = 0, *this_path;
7205 unsigned int last_path_len = 0;
7210 /* Ignore newlines. */
7217 /* Get the initial path. */
7226 /* When --disable-multilib was used but target defines
7227 MULTILIB_OSDIRNAMES, entries starting with .: are there just
7228 to find multilib_os_dir, so skip them from output. */
7229 if (this_path[0] == '.' && this_path[1] == ':')
7232 /* Check for matches with the multilib_exclusions. We don't bother
7233 with the '!' in either list. If any of the exclusion rules match
7234 all of its options with the select rule, we skip it. */
7236 const char *e = multilib_exclusions;
7237 const char *this_arg;
7242 /* Ignore newlines. */
7249 /* Check the arguments. */
7266 while (*e != ' ' && *e != ';')
7277 int len = e - this_arg;
7284 while (*q != ' ' && *q != ';')
7291 if (! strncmp (arg, this_arg, (len < q - arg) ? q - arg : len) ||
7292 default_arg (this_arg, e - this_arg))
7322 /* If this is a duplicate, skip it. */
7323 skip = (last_path != 0 && (unsigned int) (p - this_path) == last_path_len
7324 && ! strncmp (last_path, this_path, last_path_len));
7326 last_path = this_path;
7327 last_path_len = p - this_path;
7330 /* If this directory requires any default arguments, we can skip
7331 it. We will already have printed a directory identical to
7332 this one which does not require that default argument. */
7350 while (*q != ' ' && *q != ';')
7358 && default_arg (arg, q - arg))
7373 for (p1 = last_path; p1 < p && *p1 != ':'; p1++)
7392 use_arg = *p != '!';
7397 while (*p != ' ' && *p != ';')
7412 /* If there are extra options, print them now. */
7413 if (multilib_extra && *multilib_extra)
7415 int print_at = TRUE;
7418 for (q = multilib_extra; *q != '\0'; q++)
7439 /* if-exists built-in spec function.
7441 Checks to see if the file specified by the absolute pathname in
7442 ARGS exists. Returns that pathname if found.
7444 The usual use for this function is to check for a library file
7445 (whose name has been expanded with %s). */
7448 if_exists_spec_function (int argc, const char **argv)
7450 /* Must have only one argument. */
7451 if (argc == 1 && IS_ABSOLUTE_PATH (argv[0]) && ! access (argv[0], R_OK))
7457 /* if-exists-else built-in spec function.
7459 This is like if-exists, but takes an additional argument which
7460 is returned if the first argument does not exist. */
7463 if_exists_else_spec_function (int argc, const char **argv)
7465 /* Must have exactly two arguments. */
7469 if (IS_ABSOLUTE_PATH (argv[0]) && ! access (argv[0], R_OK))