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 Free Software Foundation, Inc.
5 This file is part of GCC.
7 GCC is free software; you can redistribute it and/or modify it under
8 the terms of the GNU General Public License as published by the Free
9 Software Foundation; either version 2, or (at your option) any later
12 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
13 WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
17 You should have received a copy of the GNU General Public License
18 along with GCC; see the file COPYING. If not, write to the Free
19 Software Foundation, 59 Temple Place - Suite 330, Boston, MA
22 This paragraph is here to try to keep Sun CC from dying.
23 The number of chars here seems crucial!!!! */
25 /* This program is the user interface to the C compiler and possibly to
26 other compilers. It is used because compilation is a complicated procedure
27 which involves running several programs and passing temporary files between
28 them, forwarding the users switches to those programs selectively,
29 and deleting the temporary files at the end.
31 CC recognizes how to compile each input file by suffixes in the file names.
32 Once it knows which kind of compilation to perform, the procedure for
33 compilation is specified by a string called a "spec". */
35 /* A Short Introduction to Adding a Command-Line Option.
37 Before adding a command-line option, consider if it is really
38 necessary. Each additional command-line option adds complexity and
39 is difficult to remove in subsequent versions.
41 In the following, consider adding the command-line argument
44 1. Each command-line option is specified in the specs file. The
45 notation is described below in the comment entitled "The Specs
48 2. In this file, add an entry to "option_map" equating the long
49 `--' argument version and any shorter, single letter version. Read
50 the comments in the declaration of "struct option_map" for an
51 explanation. Do not omit the first `-'.
53 3. Look in the "specs" file to determine which program or option
54 list should be given the argument, e.g., "cc1_options". Add the
55 appropriate syntax for the shorter option version to the
56 corresponding "const char *" entry in this file. Omit the first
57 `-' from the option. For example, use `-bar', rather than `--bar'.
59 4. If the argument takes an argument, e.g., `--baz argument1',
60 modify either DEFAULT_SWITCH_TAKES_ARG or
61 DEFAULT_WORD_SWITCH_TAKES_ARG in this file. Omit the first `-'
64 5. Document the option in this file's display_help(). If the
65 option is passed to a subprogram, modify its corresponding
66 function, e.g., cppinit.c:print_help() or toplev.c:display_help(),
69 6. Compile and test. Make sure that your new specs file is being
70 read. For example, use a debugger to investigate the value of
71 "specs_file" in main(). */
76 #if ! defined( SIGCHLD ) && defined( SIGCLD )
77 # define SIGCHLD SIGCLD
85 #ifdef HAVE_SYS_RESOURCE_H
86 #include <sys/resource.h>
88 #if defined (HAVE_DECL_GETRUSAGE) && !HAVE_DECL_GETRUSAGE
89 extern int getrusage PARAMS ((int, struct rusage *));
92 /* By default there is no special suffix for target executables. */
93 /* FIXME: when autoconf is fixed, remove the host check - dj */
94 #if defined(TARGET_EXECUTABLE_SUFFIX) && defined(HOST_EXECUTABLE_SUFFIX)
95 #define HAVE_TARGET_EXECUTABLE_SUFFIX
98 /* By default there is no special suffix for host executables. */
99 #ifdef HOST_EXECUTABLE_SUFFIX
100 #define HAVE_HOST_EXECUTABLE_SUFFIX
102 #define HOST_EXECUTABLE_SUFFIX ""
105 /* By default, the suffix for target object files is ".o". */
106 #ifdef TARGET_OBJECT_SUFFIX
107 #define HAVE_TARGET_OBJECT_SUFFIX
109 #define TARGET_OBJECT_SUFFIX ".o"
113 /* FIXME: the location independence code for VMS is hairier than this,
114 and hasn't been written. */
120 static const char dir_separator_str[] = { DIR_SEPARATOR, 0 };
122 /* Most every one is fine with LIBRARY_PATH. For some, it conflicts. */
123 #ifndef LIBRARY_PATH_ENV
124 #define LIBRARY_PATH_ENV "LIBRARY_PATH"
128 #define kill(p,s) raise(s)
131 /* If a stage of compilation returns an exit status >= 1,
132 compilation of that file ceases. */
134 #define MIN_FATAL_STATUS 1
136 /* Flag set by cppspec.c to 1. */
139 /* Flag saying to pass the greatest exit code returned by a sub-process
140 to the calling program. */
141 static int pass_exit_codes;
143 /* Definition of string containing the arguments given to configure. */
144 #include "configargs.h"
146 /* Flag saying to print the directories gcc will search through looking for
147 programs, libraries, etc. */
149 static int print_search_dirs;
151 /* Flag saying to print the full filename of this file
152 as found through our usual search mechanism. */
154 static const char *print_file_name = NULL;
156 /* As print_file_name, but search for executable file. */
158 static const char *print_prog_name = NULL;
160 /* Flag saying to print the relative path we'd use to
161 find libgcc.a given the current compiler flags. */
163 static int print_multi_directory;
165 /* Flag saying to print the relative path we'd use to
166 find OS libraries given the current compiler flags. */
168 static int print_multi_os_directory;
170 /* Flag saying to print the list of subdirectories and
171 compiler flags used to select them in a standard form. */
173 static int print_multi_lib;
175 /* Flag saying to print the command line options understood by gcc and its
178 static int print_help_list;
180 /* Flag indicating whether we should print the command and arguments */
182 static int verbose_flag;
184 /* Flag indicating whether we should ONLY print the command and
185 arguments (like verbose_flag) without executing the command.
186 Displayed arguments are quoted so that the generated command
187 line is suitable for execution. This is intended for use in
188 shell scripts to capture the driver-generated command line. */
189 static int verbose_only_flag;
191 /* Flag indicating to print target specific command line options. */
193 static int target_help_flag;
195 /* Flag indicating whether we should report subprocess execution times
196 (if this is supported by the system - see pexecute.c). */
198 static int report_times;
200 /* Nonzero means write "temp" files in source directory
201 and use the source file's name in them, and don't delete them. */
203 static int save_temps_flag;
205 /* The compiler version. */
207 static const char *compiler_version;
209 /* The target version specified with -V */
211 static const char *const spec_version = DEFAULT_TARGET_VERSION;
213 /* The target machine specified with -b. */
215 static const char *spec_machine = DEFAULT_TARGET_MACHINE;
217 /* Nonzero if cross-compiling.
218 When -b is used, the value comes from the `specs' file. */
221 static const char *cross_compile = "1";
223 static const char *cross_compile = "0";
226 #ifdef MODIFY_TARGET_NAME
228 /* Information on how to alter the target name based on a command-line
229 switch. The only case we support now is simply appending or deleting a
230 string to or from the end of the first part of the configuration name. */
232 static const struct modify_target
234 const char *const sw;
235 const enum add_del {ADD, DELETE} add_del;
236 const char *const str;
238 modify_target[] = MODIFY_TARGET_NAME;
241 /* The number of errors that have occurred; the link phase will not be
242 run if this is nonzero. */
243 static int error_count = 0;
245 /* Greatest exit code of sub-processes that has been encountered up to
247 static int greatest_status = 1;
249 /* This is the obstack which we use to allocate many strings. */
251 static struct obstack obstack;
253 /* This is the obstack to build an environment variable to pass to
254 collect2 that describes all of the relevant switches of what to
255 pass the compiler in building the list of pointers to constructors
258 static struct obstack collect_obstack;
260 /* These structs are used to collect resource usage information for
262 #ifdef HAVE_GETRUSAGE
263 static struct rusage rus, prus;
266 /* Forward declaration for prototypes. */
269 static void init_spec PARAMS ((void));
270 static void store_arg PARAMS ((const char *, int, int));
271 static char *load_specs PARAMS ((const char *));
272 static void read_specs PARAMS ((const char *, int));
273 static void set_spec PARAMS ((const char *, const char *));
274 static struct compiler *lookup_compiler PARAMS ((const char *, size_t, const char *));
275 static char *build_search_list PARAMS ((struct path_prefix *, const char *, int));
276 static void putenv_from_prefixes PARAMS ((struct path_prefix *, const char *));
277 static int access_check PARAMS ((const char *, int));
278 static char *find_a_file PARAMS ((struct path_prefix *, const char *,
280 static void add_prefix PARAMS ((struct path_prefix *, const char *,
281 const char *, int, int, int *, int));
282 static void translate_options PARAMS ((int *, const char *const **));
283 static char *skip_whitespace PARAMS ((char *));
284 static void delete_if_ordinary PARAMS ((const char *));
285 static void delete_temp_files PARAMS ((void));
286 static void delete_failure_queue PARAMS ((void));
287 static void clear_failure_queue PARAMS ((void));
288 static int check_live_switch PARAMS ((int, int));
289 static const char *handle_braces PARAMS ((const char *));
290 static const struct spec_function *lookup_spec_function PARAMS ((const char *));
291 static const char *eval_spec_function PARAMS ((const char *, const char *));
292 static const char *handle_spec_function PARAMS ((const char *));
293 static char *save_string PARAMS ((const char *, int));
294 static void set_collect_gcc_options PARAMS ((void));
295 static int do_spec_1 PARAMS ((const char *, int, const char *));
296 static int do_spec_2 PARAMS ((const char *));
297 static void do_self_spec PARAMS ((const char *));
298 static const char *find_file PARAMS ((const char *));
299 static int is_directory PARAMS ((const char *, const char *, int));
300 static void validate_switches PARAMS ((const char *));
301 static void validate_all_switches PARAMS ((void));
302 static void give_switch PARAMS ((int, int, int));
303 static int used_arg PARAMS ((const char *, int));
304 static int default_arg PARAMS ((const char *, int));
305 static void set_multilib_dir PARAMS ((void));
306 static void print_multilib_info PARAMS ((void));
307 static void perror_with_name PARAMS ((const char *));
308 static void pfatal_pexecute PARAMS ((const char *, const char *))
310 static void notice PARAMS ((const char *, ...))
312 static void display_help PARAMS ((void));
313 static void add_preprocessor_option PARAMS ((const char *, int));
314 static void add_assembler_option PARAMS ((const char *, int));
315 static void add_linker_option PARAMS ((const char *, int));
316 static void process_command PARAMS ((int, const char *const *));
317 static int execute PARAMS ((void));
318 static void alloc_args PARAMS ((void));
319 static void clear_args PARAMS ((void));
320 static void fatal_error PARAMS ((int));
321 #ifdef ENABLE_SHARED_LIBGCC
322 static void init_gcc_specs PARAMS ((struct obstack *,
323 const char *, const char *,
326 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
327 static const char *convert_filename PARAMS ((const char *, int, int));
330 static const char *if_exists_spec_function PARAMS ((int, const char **));
331 static const char *if_exists_else_spec_function PARAMS ((int, const char **));
333 /* The Specs Language
335 Specs are strings containing lines, each of which (if not blank)
336 is made up of a program name, and arguments separated by spaces.
337 The program name must be exact and start from root, since no path
338 is searched and it is unreliable to depend on the current working directory.
339 Redirection of input or output is not supported; the subprograms must
340 accept filenames saying what files to read and write.
342 In addition, the specs can contain %-sequences to substitute variable text
343 or for conditional text. Here is a table of all defined %-sequences.
344 Note that spaces are not generated automatically around the results of
345 expanding these sequences; therefore, you can concatenate them together
346 or with constant text in a single argument.
348 %% substitute one % into the program name or argument.
349 %i substitute the name of the input file being processed.
350 %b substitute the basename of the input file being processed.
351 This is the substring up to (and not including) the last period
352 and not including the directory.
353 %B same as %b, but include the file suffix (text after the last period).
355 substitute a file name that has suffix SUFFIX and is chosen
356 once per compilation, and mark the argument a la %d. To reduce
357 exposure to denial-of-service attacks, the file name is now
358 chosen in a way that is hard to predict even when previously
359 chosen file names are known. For example, `%g.s ... %g.o ... %g.s'
360 might turn into `ccUVUUAU.s ccXYAXZ12.o ccUVUUAU.s'. SUFFIX matches
361 the regexp "[.A-Za-z]*%O"; "%O" is treated exactly as if it
362 had been pre-processed. Previously, %g was simply substituted
363 with a file name chosen once per compilation, without regard
364 to any appended suffix (which was therefore treated just like
365 ordinary text), making such attacks more likely to succeed.
367 like %g, but generates a new temporary file name even if %uSUFFIX
370 substitutes the last file name generated with %uSUFFIX, generating a
371 new one if there is no such last file name. In the absence of any
372 %uSUFFIX, this is just like %gSUFFIX, except they don't share
373 the same suffix "space", so `%g.s ... %U.s ... %g.s ... %U.s'
374 would involve the generation of two distinct file names, one
375 for each `%g.s' and another for each `%U.s'. Previously, %U was
376 simply substituted with a file name chosen for the previous %u,
377 without regard to any appended suffix.
379 substitutes the name of the HOST_BIT_BUCKET, if any, and if it is
380 writable, and if save-temps is off; otherwise, substitute the name
381 of a temporary file, just like %u. This temporary file is not
382 meant for communication between processes, but rather as a junk
385 substitutes .SUFFIX for the suffixes of a matched switch's args when
386 it is subsequently output with %*. SUFFIX is terminated by the next
388 %d marks the argument containing or following the %d as a
389 temporary file name, so that that file will be deleted if CC exits
390 successfully. Unlike %g, this contributes no text to the argument.
391 %w marks the argument containing or following the %w as the
392 "output file" of this compilation. This puts the argument
393 into the sequence of arguments that %o will substitute later.
395 like %{...} but mark last argument supplied within
396 as a file to be deleted on failure.
397 %o substitutes the names of all the output files, with spaces
398 automatically placed around them. You should write spaces
399 around the %o as well or the results are undefined.
400 %o is for use in the specs for running the linker.
401 Input files whose names have no recognized suffix are not compiled
402 at all, but they are included among the output files, so they will
404 %O substitutes the suffix for object files. Note that this is
405 handled specially when it immediately follows %g, %u, or %U
406 (with or without a suffix argument) because of the need for
407 those to form complete file names. The handling is such that
408 %O is treated exactly as if it had already been substituted,
409 except that %g, %u, and %U do not currently support additional
410 SUFFIX characters following %O as they would following, for
412 %p substitutes the standard macro predefinitions for the
413 current target machine. Use this when running cpp.
414 %P like %p, but puts `__' before and after the name of each macro.
415 (Except macros that already have __.)
417 %I Substitute a -iprefix option made from GCC_EXEC_PREFIX.
418 %s current argument is the name of a library or startup file of some sort.
419 Search for that file in a standard list of directories
420 and substitute the full name found.
421 %eSTR Print STR as an error message. STR is terminated by a newline.
422 Use this when inconsistent options are detected.
423 %nSTR Print STR as an notice. STR is terminated by a newline.
424 %x{OPTION} Accumulate an option for %X.
425 %X Output the accumulated linker options specified by compilations.
426 %Y Output the accumulated assembler options specified by compilations.
427 %Z Output the accumulated preprocessor options specified by compilations.
428 %v1 Substitute the major version number of GCC.
429 (For version 2.5.3, this is 2.)
430 %v2 Substitute the minor version number of GCC.
431 (For version 2.5.3, this is 5.)
432 %v3 Substitute the patch level number of GCC.
433 (For version 2.5.3, this is 3.)
434 %a process ASM_SPEC as a spec.
435 This allows config.h to specify part of the spec for running as.
436 %A process ASM_FINAL_SPEC as a spec. A capital A is actually
437 used here. This can be used to run a post-processor after the
438 assembler has done its job.
439 %D Dump out a -L option for each directory in startfile_prefixes.
440 If multilib_dir is set, extra entries are generated with it affixed.
441 %l process LINK_SPEC as a spec.
442 %L process LIB_SPEC as a spec.
443 %G process LIBGCC_SPEC as a spec.
444 %M output multilib_dir with directory separators replaced with "_";
445 if multilib_dir is not set or is ".", output "".
446 %S process STARTFILE_SPEC as a spec. A capital S is actually used here.
447 %E process ENDFILE_SPEC as a spec. A capital E is actually used here.
448 %C process CPP_SPEC as a spec.
449 %1 process CC1_SPEC as a spec.
450 %2 process CC1PLUS_SPEC as a spec.
451 %| output "-" if the input for the current command is coming from a pipe.
452 %* substitute the variable part of a matched option. (See below.)
453 Note that each comma in the substituted string is replaced by
456 Call the named function FUNCTION, passing it ARGS. ARGS is
457 first processed as a nested spec string, then split into an
458 argument vector in the usual fashion. The function returns
459 a string which is processed as if it had appeared literally
460 as part of the current spec.
461 %{S} substitutes the -S switch, if that switch was given to CC.
462 If that switch was not specified, this substitutes nothing.
463 Here S is a metasyntactic variable.
464 %{S*} substitutes all the switches specified to CC whose names start
465 with -S. This is used for -o, -I, etc; switches that take
466 arguments. CC considers `-o foo' as being one switch whose
467 name starts with `o'. %{o*} would substitute this text,
468 including the space; thus, two arguments would be generated.
469 %{^S*} likewise, but don't put a blank between a switch and any args.
470 %{S*&T*} likewise, but preserve order of S and T options (the order
471 of S and T in the spec is not significant). Can be any number
472 of ampersand-separated variables; for each the wild card is
473 optional. Useful for CPP as %{D*&U*&A*}.
474 %{S*:X} substitutes X if one or more switches whose names start with -S are
475 specified to CC. Note that the tail part of the -S option
476 (i.e. the part matched by the `*') will be substituted for each
477 occurrence of %* within X.
478 %{<S} remove all occurrences of -S from the command line.
479 Note - this option is position dependent. % commands in the
480 spec string before this option will see -S, % commands in the
481 spec string after this option will not.
482 %{S:X} substitutes X, but only if the -S switch was given to CC.
483 %{!S:X} substitutes X, but only if the -S switch was NOT given to CC.
484 %{|S:X} like %{S:X}, but if no S switch, substitute `-'.
485 %{|!S:X} like %{!S:X}, but if there is an S switch, substitute `-'.
486 %{.S:X} substitutes X, but only if processing a file with suffix S.
487 %{!.S:X} substitutes X, but only if NOT processing a file with suffix S.
488 %{S|P:X} substitutes X if either -S or -P was given to CC. This may be
489 combined with ! and . as above binding stronger than the OR.
490 %(Spec) processes a specification defined in a specs file as *Spec:
491 %[Spec] as above, but put __ around -D arguments
493 The conditional text X in a %{S:X} or %{!S:X} construct may contain
494 other nested % constructs or spaces, or even newlines. They are
495 processed as usual, as described above.
497 The -O, -f, -m, and -W switches are handled specifically in these
498 constructs. If another value of -O or the negated form of a -f, -m, or
499 -W switch is found later in the command line, the earlier switch
500 value is ignored, except with {S*} where S is just one letter; this
501 passes all matching options.
503 The character | at the beginning of the predicate text is used to indicate
504 that a command should be piped to the following command, but only if -pipe
507 Note that it is built into CC which switches take arguments and which
508 do not. You might think it would be useful to generalize this to
509 allow each compiler's spec to say which switches take arguments. But
510 this cannot be done in a consistent fashion. CC cannot even decide
511 which input files have been specified without knowing which switches
512 take arguments, and it must know which input files to compile in order
513 to tell which compilers to run.
515 CC also knows implicitly that arguments starting in `-l' are to be
516 treated as compiler output files, and passed to the linker in their
517 proper position among the other output files. */
519 /* Define the macros used for specs %a, %l, %L, %S, %C, %1. */
521 /* config.h can define ASM_SPEC to provide extra args to the assembler
522 or extra switch-translations. */
527 /* config.h can define ASM_FINAL_SPEC to run a post processor after
528 the assembler has run. */
529 #ifndef ASM_FINAL_SPEC
530 #define ASM_FINAL_SPEC ""
533 /* config.h can define CPP_SPEC to provide extra args to the C preprocessor
534 or extra switch-translations. */
539 /* config.h can define CC1_SPEC to provide extra args to cc1 and cc1plus
540 or extra switch-translations. */
545 /* config.h can define CC1PLUS_SPEC to provide extra args to cc1plus
546 or extra switch-translations. */
548 #define CC1PLUS_SPEC ""
551 /* config.h can define LINK_SPEC to provide extra args to the linker
552 or extra switch-translations. */
557 /* config.h can define LIB_SPEC to override the default libraries. */
559 #define LIB_SPEC "%{!shared:%{g*:-lg} %{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p}}"
562 /* config.h can define LIBGCC_SPEC to override how and when libgcc.a is
565 #if defined(LINK_LIBGCC_SPECIAL) || defined(LINK_LIBGCC_SPECIAL_1)
566 /* Have gcc do the search for libgcc.a. */
567 #define LIBGCC_SPEC "libgcc.a%s"
569 #define LIBGCC_SPEC "-lgcc"
573 /* config.h can define STARTFILE_SPEC to override the default crt0 files. */
574 #ifndef STARTFILE_SPEC
575 #define STARTFILE_SPEC \
576 "%{!shared:%{pg:gcrt0%O%s}%{!pg:%{p:mcrt0%O%s}%{!p:crt0%O%s}}}"
579 /* config.h can define SWITCHES_NEED_SPACES to control which options
580 require spaces between the option and the argument. */
581 #ifndef SWITCHES_NEED_SPACES
582 #define SWITCHES_NEED_SPACES ""
585 /* config.h can define ENDFILE_SPEC to override the default crtn files. */
587 #define ENDFILE_SPEC ""
591 #define LINKER_NAME "collect2"
594 /* Define ASM_DEBUG_SPEC to be a spec suitable for translating '-g'
596 #ifndef ASM_DEBUG_SPEC
597 # if defined(DBX_DEBUGGING_INFO) && defined(DWARF2_DEBUGGING_INFO) \
598 && defined(HAVE_AS_GDWARF2_DEBUG_FLAG) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
599 # define ASM_DEBUG_SPEC \
600 (PREFERRED_DEBUGGING_TYPE == DBX_DEBUG \
601 ? "%{gdwarf-2*:--gdwarf2}%{!gdwarf-2*:%{g*:--gstabs}}" \
602 : "%{gstabs*:--gstabs}%{!gstabs*:%{g*:--gdwarf2}}")
604 # if defined(DBX_DEBUGGING_INFO) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
605 # define ASM_DEBUG_SPEC "%{g*:--gstabs}"
607 # if defined(DWARF2_DEBUGGING_INFO) && defined(HAVE_AS_GDWARF2_DEBUG_FLAG)
608 # define ASM_DEBUG_SPEC "%{g*:--gdwarf2}"
612 #ifndef ASM_DEBUG_SPEC
613 # define ASM_DEBUG_SPEC ""
616 /* Here is the spec for running the linker, after compiling all files. */
618 /* This is overridable by the target in case they need to specify the
619 -lgcc and -lc order specially, yet not require them to override all
620 of LINK_COMMAND_SPEC. */
621 #ifndef LINK_GCC_C_SEQUENCE_SPEC
622 #define LINK_GCC_C_SEQUENCE_SPEC "%G %L %G"
625 /* -u* was put back because both BSD and SysV seem to support it. */
626 /* %{static:} simply prevents an error message if the target machine
627 doesn't handle -static. */
628 /* We want %{T*} after %{L*} and %D so that it can be used to specify linker
629 scripts which exist in user specified directories, or in standard
631 #ifndef LINK_COMMAND_SPEC
632 #define LINK_COMMAND_SPEC "\
633 %{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:\
634 %(linker) %l %X %{o*} %{A} %{d} %{e*} %{m} %{N} %{n} %{r} %{s} %{t}\
635 %{u*} %{x} %{z} %{Z} %{!A:%{!nostdlib:%{!nostartfiles:%S}}}\
636 %{static:} %{L*} %(link_libgcc) %o %{!nostdlib:%{!nodefaultlibs:%(link_gcc_c_sequence)}}\
637 %{!A:%{!nostdlib:%{!nostartfiles:%E}}} %{T*} }}}}}}"
640 #ifndef LINK_LIBGCC_SPEC
641 # ifdef LINK_LIBGCC_SPECIAL
642 /* Don't generate -L options for startfile prefix list. */
643 # define LINK_LIBGCC_SPEC ""
645 /* Do generate them. */
646 # define LINK_LIBGCC_SPEC "%D"
650 #ifndef STARTFILE_PREFIX_SPEC
651 # define STARTFILE_PREFIX_SPEC ""
654 static const char *asm_debug;
655 static const char *cpp_spec = CPP_SPEC;
656 static const char *cpp_predefines = CPP_PREDEFINES;
657 static const char *cc1_spec = CC1_SPEC;
658 static const char *cc1plus_spec = CC1PLUS_SPEC;
659 static const char *link_gcc_c_sequence_spec = LINK_GCC_C_SEQUENCE_SPEC;
660 static const char *asm_spec = ASM_SPEC;
661 static const char *asm_final_spec = ASM_FINAL_SPEC;
662 static const char *link_spec = LINK_SPEC;
663 static const char *lib_spec = LIB_SPEC;
664 static const char *libgcc_spec = LIBGCC_SPEC;
665 static const char *endfile_spec = ENDFILE_SPEC;
666 static const char *startfile_spec = STARTFILE_SPEC;
667 static const char *switches_need_spaces = SWITCHES_NEED_SPACES;
668 static const char *linker_name_spec = LINKER_NAME;
669 static const char *link_command_spec = LINK_COMMAND_SPEC;
670 static const char *link_libgcc_spec = LINK_LIBGCC_SPEC;
671 static const char *startfile_prefix_spec = STARTFILE_PREFIX_SPEC;
673 /* Standard options to cpp, cc1, and as, to reduce duplication in specs.
674 There should be no need to override these in target dependent files,
675 but we need to copy them to the specs file so that newer versions
676 of the GCC driver can correctly drive older tool chains with the
677 appropriate -B options. */
679 /* When cpplib handles traditional preprocessing, get rid of this, and
680 call cc1 (or cc1obj in objc/lang-specs.h) from the main specs so
681 that we default the front end language better. */
682 static const char *trad_capable_cpp =
683 "cc1 -E %{traditional|ftraditional|traditional-cpp:-traditional-cpp}";
685 /* We don't wrap .d files in %W{} since a missing .d file, and
686 therefore no dependency entry, confuses make into thinking a .o
687 file that happens to exist is up-to-date. */
688 static const char *cpp_unique_options =
689 "%{C:%{!E:%eGNU C does not support -C without using -E}}\
690 %{CC:%{!E:%eGNU C does not support -CC without using -E}}\
691 %{!Q:-quiet} %{nostdinc*} %{C} %{CC} %{v} %{I*} %{P} %I\
692 %{MD:-MD %{!o:%b.d}%{o*:%.d%*}}\
693 %{MMD:-MMD %{!o:%b.d}%{o*:%.d%*}}\
694 %{M} %{MM} %{MF*} %{MG} %{MP} %{MQ*} %{MT*}\
695 %{!E:%{!M:%{!MM:%{MD|MMD:%{o*:-MQ %*}}}}}\
696 %{!no-gcc:-D__GNUC__=%v1 -D__GNUC_MINOR__=%v2 -D__GNUC_PATCHLEVEL__=%v3}\
697 %{!undef:%{!ansi:%{!std=*:%p}%{std=gnu*:%p}} %P} %{trigraphs}\
698 %{remap} %{g3:-dD} %{H} %C %{D*&U*&A*} %{i*} %Z %i\
701 /* This contains cpp options which are common with cc1_options and are passed
702 only when preprocessing only to avoid duplication. We pass the cc1 spec
703 options to the preprocessor so that it the cc1 spec may manipulate
704 options used to set target flags. Those special target flags settings may
705 in turn cause preprocessor symbols to be defined specially. */
706 static const char *cpp_options =
707 "%(cpp_unique_options) %1 %{m*} %{std*} %{ansi} %{W*&pedantic*} %{w} %{f*}\
710 /* This contains cpp options which are not passed when the preprocessor
711 output will be used by another program. */
712 static const char *cpp_debug_options = "%{d*}";
714 /* NB: This is shared amongst all front-ends. */
715 static const char *cc1_options =
716 "%{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\
717 %1 %{!Q:-quiet} -dumpbase %B %{d*} %{m*} %{a*}\
718 -auxbase%{c|S:%{o*:-strip %*}%{!o*: %b}}%{!c:%{!S: %b}}\
719 %{g*} %{O*} %{W*&pedantic*} %{w} %{std*} %{ansi}\
720 %{v:-version} %{pg:-p} %{p} %{f*} %{undef}\
721 %{Qn:-fno-ident} %{--help:--help}\
722 %{--target-help:--target-help}\
723 %{!fsyntax-only:%{S:%W{o*}%{!o*:-o %b.s}}}\
724 %{fsyntax-only:-o %j} %{-param*}";
726 static const char *asm_options =
727 "%a %Y %{c:%W{o*}%{!o*:-o %w%b%O}}%{!c:-o %d%w%u%O}";
729 static const char *invoke_as =
730 "%{!S:-o %{|!pipe:%g.s} |\n as %(asm_options) %{!pipe:%g.s} %A }";
732 /* Some compilers have limits on line lengths, and the multilib_select
733 and/or multilib_matches strings can be very long, so we build them at
735 static struct obstack multilib_obstack;
736 static const char *multilib_select;
737 static const char *multilib_matches;
738 static const char *multilib_defaults;
739 static const char *multilib_exclusions;
740 #include "multilib.h"
742 /* Check whether a particular argument is a default argument. */
744 #ifndef MULTILIB_DEFAULTS
745 #define MULTILIB_DEFAULTS { "" }
748 static const char *const multilib_defaults_raw[] = MULTILIB_DEFAULTS;
750 #ifndef DRIVER_SELF_SPECS
751 #define DRIVER_SELF_SPECS ""
754 static const char *const driver_self_specs[] = { DRIVER_SELF_SPECS };
758 struct user_specs *next;
759 const char *filename;
762 static struct user_specs *user_specs_head, *user_specs_tail;
764 /* This defines which switch letters take arguments. */
766 #define DEFAULT_SWITCH_TAKES_ARG(CHAR) \
767 ((CHAR) == 'D' || (CHAR) == 'U' || (CHAR) == 'o' \
768 || (CHAR) == 'e' || (CHAR) == 'T' || (CHAR) == 'u' \
769 || (CHAR) == 'I' || (CHAR) == 'm' || (CHAR) == 'x' \
770 || (CHAR) == 'L' || (CHAR) == 'A' || (CHAR) == 'B' || (CHAR) == 'b')
772 #ifndef SWITCH_TAKES_ARG
773 #define SWITCH_TAKES_ARG(CHAR) DEFAULT_SWITCH_TAKES_ARG(CHAR)
776 /* This defines which multi-letter switches take arguments. */
778 #define DEFAULT_WORD_SWITCH_TAKES_ARG(STR) \
779 (!strcmp (STR, "Tdata") || !strcmp (STR, "Ttext") \
780 || !strcmp (STR, "Tbss") || !strcmp (STR, "include") \
781 || !strcmp (STR, "imacros") || !strcmp (STR, "aux-info") \
782 || !strcmp (STR, "idirafter") || !strcmp (STR, "iprefix") \
783 || !strcmp (STR, "iwithprefix") || !strcmp (STR, "iwithprefixbefore") \
784 || !strcmp (STR, "isystem") || !strcmp (STR, "-param") \
785 || !strcmp (STR, "specs") \
786 || !strcmp (STR, "MF") || !strcmp (STR, "MT") || !strcmp (STR, "MQ"))
788 #ifndef WORD_SWITCH_TAKES_ARG
789 #define WORD_SWITCH_TAKES_ARG(STR) DEFAULT_WORD_SWITCH_TAKES_ARG (STR)
792 #ifdef HAVE_TARGET_EXECUTABLE_SUFFIX
793 /* This defines which switches stop a full compilation. */
794 #define DEFAULT_SWITCH_CURTAILS_COMPILATION(CHAR) \
795 ((CHAR) == 'c' || (CHAR) == 'S')
797 #ifndef SWITCH_CURTAILS_COMPILATION
798 #define SWITCH_CURTAILS_COMPILATION(CHAR) \
799 DEFAULT_SWITCH_CURTAILS_COMPILATION(CHAR)
803 /* Record the mapping from file suffixes for compilation specs. */
807 const char *suffix; /* Use this compiler for input files
808 whose names end in this suffix. */
810 const char *spec; /* To use this compiler, run this spec. */
812 const char *cpp_spec; /* If non-NULL, substitute this spec
813 for `%C', rather than the usual
817 /* Pointer to a vector of `struct compiler' that gives the spec for
818 compiling a file, based on its suffix.
819 A file that does not end in any of these suffixes will be passed
820 unchanged to the loader and nothing else will be done to it.
822 An entry containing two 0s is used to terminate the vector.
824 If multiple entries match a file, the last matching one is used. */
826 static struct compiler *compilers;
828 /* Number of entries in `compilers', not counting the null terminator. */
830 static int n_compilers;
832 /* The default list of file name suffixes and their compilation specs. */
834 static const struct compiler default_compilers[] =
836 /* Add lists of suffixes of known languages here. If those languages
837 were not present when we built the driver, we will hit these copies
838 and be given a more meaningful error than "file not used since
839 linking is not done". */
840 {".m", "#Objective-C", 0}, {".mi", "#Objective-C", 0},
841 {".cc", "#C++", 0}, {".cxx", "#C++", 0}, {".cpp", "#C++", 0},
842 {".cp", "#C++", 0}, {".c++", "#C++", 0}, {".C", "#C++", 0},
844 {".ads", "#Ada", 0}, {".adb", "#Ada", 0},
845 {".f", "#Fortran", 0}, {".for", "#Fortran", 0}, {".fpp", "#Fortran", 0},
846 {".F", "#Fortran", 0}, {".FOR", "#Fortran", 0}, {".FPP", "#Fortran", 0},
847 {".r", "#Ratfor", 0},
848 {".p", "#Pascal", 0}, {".pas", "#Pascal", 0},
849 {".java", "#Java", 0}, {".class", "#Java", 0},
850 {".zip", "#Java", 0}, {".jar", "#Java", 0},
851 /* Next come the entries for C. */
854 /* cc1 has an integrated ISO C preprocessor. We should invoke the
855 external preprocessor if -save-temps is given. */
856 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\
858 %{traditional|ftraditional:\
859 %eGNU C no longer supports -traditional without -E}\
860 %{save-temps|traditional-cpp:%(trad_capable_cpp) \
861 %(cpp_options) %b.i \n\
862 cc1 -fpreprocessed %b.i %(cc1_options)}\
863 %{!save-temps:%{!traditional-cpp:\
864 cc1 %(cpp_unique_options) %(cc1_options)}}\
865 %{!fsyntax-only:%(invoke_as)}}}}", 0},
867 "%{!E:%e-E required when input is from standard input}\
868 %(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)", 0},
869 {".h", "@c-header", 0},
871 "%{!E:%ecompilation of header file requested} \
872 %(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)",
874 {".i", "@cpp-output", 0},
876 "%{!M:%{!MM:%{!E:cc1 -fpreprocessed %i %(cc1_options) %{!fsyntax-only:%(invoke_as)}}}}", 0},
877 {".s", "@assembler", 0},
879 "%{!M:%{!MM:%{!E:%{!S:as %(asm_debug) %(asm_options) %i %A }}}}", 0},
880 {".S", "@assembler-with-cpp", 0},
881 {"@assembler-with-cpp",
882 "%(trad_capable_cpp) -lang-asm %(cpp_options)\
883 %{E|M|MM:%(cpp_debug_options)}\
884 %{!M:%{!MM:%{!E:%{!S:-o %{|!pipe:%g.s} |\n\
885 as %(asm_debug) %(asm_options) %{!pipe:%g.s} %A }}}}", 0},
887 /* Mark end of table */
891 /* Number of elements in default_compilers, not counting the terminator. */
893 static const int n_default_compilers = ARRAY_SIZE (default_compilers) - 1;
895 /* A vector of options to give to the linker.
896 These options are accumulated by %x,
897 and substituted into the linker command with %X. */
898 static int n_linker_options;
899 static char **linker_options;
901 /* A vector of options to give to the assembler.
902 These options are accumulated by -Wa,
903 and substituted into the assembler command with %Y. */
904 static int n_assembler_options;
905 static char **assembler_options;
907 /* A vector of options to give to the preprocessor.
908 These options are accumulated by -Wp,
909 and substituted into the preprocessor command with %Z. */
910 static int n_preprocessor_options;
911 static char **preprocessor_options;
913 /* Define how to map long options into short ones. */
915 /* This structure describes one mapping. */
918 /* The long option's name. */
919 const char *const name;
920 /* The equivalent short option. */
921 const char *const equivalent;
922 /* Argument info. A string of flag chars; NULL equals no options.
923 a => argument required.
924 o => argument optional.
925 j => join argument to equivalent, making one word.
926 * => require other text after NAME as an argument. */
927 const char *const arg_info;
930 /* This is the table of mappings. Mappings are tried sequentially
931 for each option encountered; the first one that matches, wins. */
933 static const struct option_map option_map[] =
935 {"--all-warnings", "-Wall", 0},
936 {"--ansi", "-ansi", 0},
937 {"--assemble", "-S", 0},
938 {"--assert", "-A", "a"},
939 {"--classpath", "-fclasspath=", "aj"},
940 {"--bootclasspath", "-fbootclasspath=", "aj"},
941 {"--CLASSPATH", "-fclasspath=", "aj"},
942 {"--comments", "-C", 0},
943 {"--comments-in-macros", "-CC", 0},
944 {"--compile", "-c", 0},
945 {"--debug", "-g", "oj"},
946 {"--define-macro", "-D", "aj"},
947 {"--dependencies", "-M", 0},
948 {"--dump", "-d", "a"},
949 {"--dumpbase", "-dumpbase", "a"},
950 {"--entry", "-e", 0},
951 {"--extra-warnings", "-W", 0},
952 {"--for-assembler", "-Wa", "a"},
953 {"--for-linker", "-Xlinker", "a"},
954 {"--force-link", "-u", "a"},
955 {"--imacros", "-imacros", "a"},
956 {"--include", "-include", "a"},
957 {"--include-barrier", "-I-", 0},
958 {"--include-directory", "-I", "aj"},
959 {"--include-directory-after", "-idirafter", "a"},
960 {"--include-prefix", "-iprefix", "a"},
961 {"--include-with-prefix", "-iwithprefix", "a"},
962 {"--include-with-prefix-before", "-iwithprefixbefore", "a"},
963 {"--include-with-prefix-after", "-iwithprefix", "a"},
964 {"--language", "-x", "a"},
965 {"--library-directory", "-L", "a"},
966 {"--machine", "-m", "aj"},
967 {"--machine-", "-m", "*j"},
968 {"--no-line-commands", "-P", 0},
969 {"--no-precompiled-includes", "-noprecomp", 0},
970 {"--no-standard-includes", "-nostdinc", 0},
971 {"--no-standard-libraries", "-nostdlib", 0},
972 {"--no-warnings", "-w", 0},
973 {"--optimize", "-O", "oj"},
974 {"--output", "-o", "a"},
975 {"--output-class-directory", "-foutput-class-dir=", "ja"},
976 {"--param", "--param", "a"},
977 {"--pedantic", "-pedantic", 0},
978 {"--pedantic-errors", "-pedantic-errors", 0},
979 {"--pipe", "-pipe", 0},
980 {"--prefix", "-B", "a"},
981 {"--preprocess", "-E", 0},
982 {"--print-search-dirs", "-print-search-dirs", 0},
983 {"--print-file-name", "-print-file-name=", "aj"},
984 {"--print-libgcc-file-name", "-print-libgcc-file-name", 0},
985 {"--print-missing-file-dependencies", "-MG", 0},
986 {"--print-multi-lib", "-print-multi-lib", 0},
987 {"--print-multi-directory", "-print-multi-directory", 0},
988 {"--print-multi-os-directory", "-print-multi-os-directory", 0},
989 {"--print-prog-name", "-print-prog-name=", "aj"},
990 {"--profile", "-p", 0},
991 {"--profile-blocks", "-a", 0},
992 {"--quiet", "-q", 0},
993 {"--resource", "-fcompile-resource=", "aj"},
994 {"--save-temps", "-save-temps", 0},
995 {"--shared", "-shared", 0},
996 {"--silent", "-q", 0},
997 {"--specs", "-specs=", "aj"},
998 {"--static", "-static", 0},
999 {"--std", "-std=", "aj"},
1000 {"--symbolic", "-symbolic", 0},
1001 {"--target", "-b", "a"},
1002 {"--time", "-time", 0},
1003 {"--trace-includes", "-H", 0},
1004 {"--traditional", "-traditional", 0},
1005 {"--traditional-cpp", "-traditional-cpp", 0},
1006 {"--trigraphs", "-trigraphs", 0},
1007 {"--undefine-macro", "-U", "aj"},
1008 {"--use-version", "-V", "a"},
1009 {"--user-dependencies", "-MM", 0},
1010 {"--verbose", "-v", 0},
1011 {"--warn-", "-W", "*j"},
1012 {"--write-dependencies", "-MD", 0},
1013 {"--write-user-dependencies", "-MMD", 0},
1018 #ifdef TARGET_OPTION_TRANSLATE_TABLE
1019 static const struct {
1020 const char *const option_found;
1021 const char *const replacements;
1022 } target_option_translations[] =
1024 TARGET_OPTION_TRANSLATE_TABLE,
1029 /* Translate the options described by *ARGCP and *ARGVP.
1030 Make a new vector and store it back in *ARGVP,
1031 and store its length in *ARGVC. */
1034 translate_options (argcp, argvp)
1036 const char *const **argvp;
1040 const char *const *argv = *argvp;
1041 int newvsize = (argc + 2) * 2 * sizeof (const char *);
1043 (const char **) xmalloc (newvsize);
1047 newv[newindex++] = argv[i++];
1051 #ifdef TARGET_OPTION_TRANSLATE_TABLE
1055 target_option_translations[tott_idx].option_found;
1058 if (strcmp (target_option_translations[tott_idx].option_found,
1065 for (sp = target_option_translations[tott_idx].replacements;
1072 newvsize += spaces * sizeof (const char *);
1073 newv = (const char **) xrealloc (newv, newvsize);
1075 sp = target_option_translations[tott_idx].replacements;
1084 newv[newindex++] = np;
1085 while (*np != ' ' && *np)
1096 if (target_option_translations[tott_idx].option_found)
1100 /* Translate -- options. */
1101 if (argv[i][0] == '-' && argv[i][1] == '-')
1104 /* Find a mapping that applies to this option. */
1105 for (j = 0; j < ARRAY_SIZE (option_map); j++)
1107 size_t optlen = strlen (option_map[j].name);
1108 size_t arglen = strlen (argv[i]);
1109 size_t complen = arglen > optlen ? optlen : arglen;
1110 const char *arginfo = option_map[j].arg_info;
1115 if (!strncmp (argv[i], option_map[j].name, complen))
1117 const char *arg = 0;
1119 if (arglen < optlen)
1122 for (k = j + 1; k < ARRAY_SIZE (option_map); k++)
1123 if (strlen (option_map[k].name) >= arglen
1124 && !strncmp (argv[i], option_map[k].name, arglen))
1126 error ("ambiguous abbreviation %s", argv[i]);
1130 if (k != ARRAY_SIZE (option_map))
1134 if (arglen > optlen)
1136 /* If the option has an argument, accept that. */
1137 if (argv[i][optlen] == '=')
1138 arg = argv[i] + optlen + 1;
1140 /* If this mapping requires extra text at end of name,
1141 accept that as "argument". */
1142 else if (strchr (arginfo, '*') != 0)
1143 arg = argv[i] + optlen;
1145 /* Otherwise, extra text at end means mismatch.
1146 Try other mappings. */
1151 else if (strchr (arginfo, '*') != 0)
1153 error ("incomplete `%s' option", option_map[j].name);
1157 /* Handle arguments. */
1158 if (strchr (arginfo, 'a') != 0)
1164 error ("missing argument to `%s' option",
1165 option_map[j].name);
1172 else if (strchr (arginfo, '*') != 0)
1174 else if (strchr (arginfo, 'o') == 0)
1177 error ("extraneous argument to `%s' option",
1178 option_map[j].name);
1182 /* Store the translation as one argv elt or as two. */
1183 if (arg != 0 && strchr (arginfo, 'j') != 0)
1184 newv[newindex++] = concat (option_map[j].equivalent, arg,
1188 newv[newindex++] = option_map[j].equivalent;
1189 newv[newindex++] = arg;
1192 newv[newindex++] = option_map[j].equivalent;
1200 /* Handle old-fashioned options--just copy them through,
1201 with their arguments. */
1202 else if (argv[i][0] == '-')
1204 const char *p = argv[i] + 1;
1208 if (SWITCH_TAKES_ARG (c) > (p[1] != 0))
1209 nskip += SWITCH_TAKES_ARG (c) - (p[1] != 0);
1210 else if (WORD_SWITCH_TAKES_ARG (p))
1211 nskip += WORD_SWITCH_TAKES_ARG (p);
1212 else if ((c == 'B' || c == 'b' || c == 'x')
1215 else if (! strcmp (p, "Xlinker"))
1218 /* Watch out for an option at the end of the command line that
1219 is missing arguments, and avoid skipping past the end of the
1221 if (nskip + i > argc)
1226 newv[newindex++] = argv[i++];
1231 /* Ordinary operands, or +e options. */
1232 newv[newindex++] = argv[i++];
1247 /* A fully-blank line is a delimiter in the SPEC file and shouldn't
1248 be considered whitespace. */
1249 if (p[0] == '\n' && p[1] == '\n' && p[2] == '\n')
1251 else if (*p == '\n' || *p == ' ' || *p == '\t')
1265 /* Structures to keep track of prefixes to try when looking for files. */
1269 const char *prefix; /* String to prepend to the path. */
1270 struct prefix_list *next; /* Next in linked list. */
1271 int require_machine_suffix; /* Don't use without machine_suffix. */
1272 /* 2 means try both machine_suffix and just_machine_suffix. */
1273 int *used_flag_ptr; /* 1 if a file was found with this prefix. */
1274 int priority; /* Sort key - priority within list. */
1275 int os_multilib; /* 1 if OS multilib scheme should be used,
1276 0 for GCC multilib scheme. */
1281 struct prefix_list *plist; /* List of prefixes to try */
1282 int max_len; /* Max length of a prefix in PLIST */
1283 const char *name; /* Name of this list (used in config stuff) */
1286 /* List of prefixes to try when looking for executables. */
1288 static struct path_prefix exec_prefixes = { 0, 0, "exec" };
1290 /* List of prefixes to try when looking for startup (crt0) files. */
1292 static struct path_prefix startfile_prefixes = { 0, 0, "startfile" };
1294 /* List of prefixes to try when looking for include files. */
1296 static struct path_prefix include_prefixes = { 0, 0, "include" };
1298 /* Suffix to attach to directories searched for commands.
1299 This looks like `MACHINE/VERSION/'. */
1301 static const char *machine_suffix = 0;
1303 /* Suffix to attach to directories searched for commands.
1304 This is just `MACHINE/'. */
1306 static const char *just_machine_suffix = 0;
1308 /* Adjusted value of GCC_EXEC_PREFIX envvar. */
1310 static const char *gcc_exec_prefix;
1312 /* Default prefixes to attach to command names. */
1314 #ifdef CROSS_COMPILE /* Don't use these prefixes for a cross compiler. */
1315 #undef MD_EXEC_PREFIX
1316 #undef MD_STARTFILE_PREFIX
1317 #undef MD_STARTFILE_PREFIX_1
1320 /* If no prefixes defined, use the null string, which will disable them. */
1321 #ifndef MD_EXEC_PREFIX
1322 #define MD_EXEC_PREFIX ""
1324 #ifndef MD_STARTFILE_PREFIX
1325 #define MD_STARTFILE_PREFIX ""
1327 #ifndef MD_STARTFILE_PREFIX_1
1328 #define MD_STARTFILE_PREFIX_1 ""
1331 /* Supply defaults for the standard prefixes. */
1333 #ifndef STANDARD_EXEC_PREFIX
1334 #define STANDARD_EXEC_PREFIX "/usr/local/lib/gcc-lib/"
1336 #ifndef STANDARD_STARTFILE_PREFIX
1337 #define STANDARD_STARTFILE_PREFIX "/usr/local/lib/"
1339 #ifndef TOOLDIR_BASE_PREFIX
1340 #define TOOLDIR_BASE_PREFIX "/usr/local/"
1342 #ifndef STANDARD_BINDIR_PREFIX
1343 #define STANDARD_BINDIR_PREFIX "/usr/local/bin"
1346 static const char *const standard_exec_prefix = STANDARD_EXEC_PREFIX;
1347 static const char *const standard_exec_prefix_1 = "/usr/lib/gcc/";
1348 static const char *md_exec_prefix = MD_EXEC_PREFIX;
1350 static const char *md_startfile_prefix = MD_STARTFILE_PREFIX;
1351 static const char *md_startfile_prefix_1 = MD_STARTFILE_PREFIX_1;
1352 static const char *const standard_startfile_prefix = STANDARD_STARTFILE_PREFIX;
1353 static const char *const standard_startfile_prefix_1 = "/lib/";
1354 static const char *const standard_startfile_prefix_2 = "/usr/lib/";
1356 static const char *const tooldir_base_prefix = TOOLDIR_BASE_PREFIX;
1357 static const char *tooldir_prefix;
1359 static const char *const standard_bindir_prefix = STANDARD_BINDIR_PREFIX;
1361 /* Subdirectory to use for locating libraries. Set by
1362 set_multilib_dir based on the compilation options. */
1364 static const char *multilib_dir;
1366 /* Subdirectory to use for locating libraries in OS conventions. Set by
1367 set_multilib_dir based on the compilation options. */
1369 static const char *multilib_os_dir;
1371 /* Structure to keep track of the specs that have been defined so far.
1372 These are accessed using %(specname) or %[specname] in a compiler
1377 /* The following 2 fields must be first */
1378 /* to allow EXTRA_SPECS to be initialized */
1379 const char *name; /* name of the spec. */
1380 const char *ptr; /* available ptr if no static pointer */
1382 /* The following fields are not initialized */
1383 /* by EXTRA_SPECS */
1384 const char **ptr_spec; /* pointer to the spec itself. */
1385 struct spec_list *next; /* Next spec in linked list. */
1386 int name_len; /* length of the name */
1387 int alloc_p; /* whether string was allocated */
1390 #define INIT_STATIC_SPEC(NAME,PTR) \
1391 { NAME, NULL, PTR, (struct spec_list *) 0, sizeof (NAME) - 1, 0 }
1393 /* List of statically defined specs. */
1394 static struct spec_list static_specs[] =
1396 INIT_STATIC_SPEC ("asm", &asm_spec),
1397 INIT_STATIC_SPEC ("asm_debug", &asm_debug),
1398 INIT_STATIC_SPEC ("asm_final", &asm_final_spec),
1399 INIT_STATIC_SPEC ("asm_options", &asm_options),
1400 INIT_STATIC_SPEC ("invoke_as", &invoke_as),
1401 INIT_STATIC_SPEC ("cpp", &cpp_spec),
1402 INIT_STATIC_SPEC ("cpp_options", &cpp_options),
1403 INIT_STATIC_SPEC ("cpp_debug_options", &cpp_debug_options),
1404 INIT_STATIC_SPEC ("cpp_unique_options", &cpp_unique_options),
1405 INIT_STATIC_SPEC ("trad_capable_cpp", &trad_capable_cpp),
1406 INIT_STATIC_SPEC ("cc1", &cc1_spec),
1407 INIT_STATIC_SPEC ("cc1_options", &cc1_options),
1408 INIT_STATIC_SPEC ("cc1plus", &cc1plus_spec),
1409 INIT_STATIC_SPEC ("link_gcc_c_sequence", &link_gcc_c_sequence_spec),
1410 INIT_STATIC_SPEC ("endfile", &endfile_spec),
1411 INIT_STATIC_SPEC ("link", &link_spec),
1412 INIT_STATIC_SPEC ("lib", &lib_spec),
1413 INIT_STATIC_SPEC ("libgcc", &libgcc_spec),
1414 INIT_STATIC_SPEC ("startfile", &startfile_spec),
1415 INIT_STATIC_SPEC ("switches_need_spaces", &switches_need_spaces),
1416 INIT_STATIC_SPEC ("predefines", &cpp_predefines),
1417 INIT_STATIC_SPEC ("cross_compile", &cross_compile),
1418 INIT_STATIC_SPEC ("version", &compiler_version),
1419 INIT_STATIC_SPEC ("multilib", &multilib_select),
1420 INIT_STATIC_SPEC ("multilib_defaults", &multilib_defaults),
1421 INIT_STATIC_SPEC ("multilib_extra", &multilib_extra),
1422 INIT_STATIC_SPEC ("multilib_matches", &multilib_matches),
1423 INIT_STATIC_SPEC ("multilib_exclusions", &multilib_exclusions),
1424 INIT_STATIC_SPEC ("multilib_options", &multilib_options),
1425 INIT_STATIC_SPEC ("linker", &linker_name_spec),
1426 INIT_STATIC_SPEC ("link_libgcc", &link_libgcc_spec),
1427 INIT_STATIC_SPEC ("md_exec_prefix", &md_exec_prefix),
1428 INIT_STATIC_SPEC ("md_startfile_prefix", &md_startfile_prefix),
1429 INIT_STATIC_SPEC ("md_startfile_prefix_1", &md_startfile_prefix_1),
1430 INIT_STATIC_SPEC ("startfile_prefix_spec", &startfile_prefix_spec),
1433 #ifdef EXTRA_SPECS /* additional specs needed */
1434 /* Structure to keep track of just the first two args of a spec_list.
1435 That is all that the EXTRA_SPECS macro gives us. */
1438 const char *const name;
1439 const char *const ptr;
1442 static const struct spec_list_1 extra_specs_1[] = { EXTRA_SPECS };
1443 static struct spec_list *extra_specs = (struct spec_list *) 0;
1446 /* List of dynamically allocates specs that have been defined so far. */
1448 static struct spec_list *specs = (struct spec_list *) 0;
1450 /* List of static spec functions. */
1452 static const struct spec_function static_spec_functions[] =
1454 { "if-exists", if_exists_spec_function },
1455 { "if-exists-else", if_exists_else_spec_function },
1459 static int processing_spec_function;
1461 /* Add appropriate libgcc specs to OBSTACK, taking into account
1462 various permutations of -shared-libgcc, -shared, and such. */
1464 #ifdef ENABLE_SHARED_LIBGCC
1466 init_gcc_specs (obstack, shared_name, static_name, eh_name)
1467 struct obstack *obstack;
1468 const char *shared_name;
1469 const char *static_name;
1470 const char *eh_name;
1474 buf = concat ("%{static|static-libgcc:", static_name, " ", eh_name,
1475 "}%{!static:%{!static-libgcc:",
1476 "%{!shared:%{!shared-libgcc:", static_name, " ",
1477 eh_name, "}%{shared-libgcc:", shared_name, " ",
1478 static_name, "}}%{shared:",
1480 "%{shared-libgcc:", shared_name,
1481 "}%{!shared-libgcc:", static_name, "}",
1487 obstack_grow (obstack, buf, strlen (buf));
1490 #endif /* ENABLE_SHARED_LIBGCC */
1492 /* Initialize the specs lookup routines. */
1497 struct spec_list *next = (struct spec_list *) 0;
1498 struct spec_list *sl = (struct spec_list *) 0;
1502 return; /* Already initialized. */
1505 notice ("Using built-in specs.\n");
1508 extra_specs = (struct spec_list *)
1509 xcalloc (sizeof (struct spec_list), ARRAY_SIZE (extra_specs_1));
1511 for (i = ARRAY_SIZE (extra_specs_1) - 1; i >= 0; i--)
1513 sl = &extra_specs[i];
1514 sl->name = extra_specs_1[i].name;
1515 sl->ptr = extra_specs_1[i].ptr;
1517 sl->name_len = strlen (sl->name);
1518 sl->ptr_spec = &sl->ptr;
1523 /* Initialize here, not in definition. The IRIX 6 O32 cc sometimes chokes
1524 on ?: in file-scope variable initializations. */
1525 asm_debug = ASM_DEBUG_SPEC;
1527 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--)
1529 sl = &static_specs[i];
1534 #ifdef ENABLE_SHARED_LIBGCC
1535 /* ??? If neither -shared-libgcc nor --static-libgcc was
1536 seen, then we should be making an educated guess. Some proposed
1537 heuristics for ELF include:
1539 (1) If "-Wl,--export-dynamic", then it's a fair bet that the
1540 program will be doing dynamic loading, which will likely
1541 need the shared libgcc.
1543 (2) If "-ldl", then it's also a fair bet that we're doing
1546 (3) For each ET_DYN we're linking against (either through -lfoo
1547 or /some/path/foo.so), check to see whether it or one of
1548 its dependencies depends on a shared libgcc.
1552 If the runtime is fixed to look for program headers instead
1553 of calling __register_frame_info at all, for each object,
1554 use the shared libgcc if any EH symbol referenced.
1556 If crtstuff is fixed to not invoke __register_frame_info
1557 automatically, for each object, use the shared libgcc if
1558 any non-empty unwind section found.
1560 Doing any of this probably requires invoking an external program to
1561 do the actual object file scanning. */
1563 const char *p = libgcc_spec;
1566 /* Transform the extant libgcc_spec into one that uses the shared libgcc
1567 when given the proper command line arguments. */
1570 if (in_sep && *p == '-' && strncmp (p, "-lgcc", 5) == 0)
1572 init_gcc_specs (&obstack,
1573 #ifdef NO_SHARED_LIBGCC_MULTILIB
1584 else if (in_sep && *p == 'l' && strncmp (p, "libgcc.a%s", 10) == 0)
1586 /* Ug. We don't know shared library extensions. Hope that
1587 systems that use this form don't do shared libraries. */
1588 init_gcc_specs (&obstack,
1589 #ifdef NO_SHARED_LIBGCC_MULTILIB
1602 obstack_1grow (&obstack, *p);
1603 in_sep = (*p == ' ');
1608 obstack_1grow (&obstack, '\0');
1609 libgcc_spec = obstack_finish (&obstack);
1612 #ifdef USE_AS_TRADITIONAL_FORMAT
1613 /* Prepend "--traditional-format" to whatever asm_spec we had before. */
1615 static const char tf[] = "--traditional-format ";
1616 obstack_grow (&obstack, tf, sizeof(tf) - 1);
1617 obstack_grow0 (&obstack, asm_spec, strlen (asm_spec));
1618 asm_spec = obstack_finish (&obstack);
1622 /* Prepend LINK_EH_SPEC to whatever link_spec we had before. */
1623 obstack_grow (&obstack, LINK_EH_SPEC, sizeof(LINK_EH_SPEC) - 1);
1624 obstack_grow0 (&obstack, link_spec, strlen (link_spec));
1625 link_spec = obstack_finish (&obstack);
1631 /* Change the value of spec NAME to SPEC. If SPEC is empty, then the spec is
1632 removed; If the spec starts with a + then SPEC is added to the end of the
1636 set_spec (name, spec)
1640 struct spec_list *sl;
1641 const char *old_spec;
1642 int name_len = strlen (name);
1645 /* If this is the first call, initialize the statically allocated specs. */
1648 struct spec_list *next = (struct spec_list *) 0;
1649 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--)
1651 sl = &static_specs[i];
1658 /* See if the spec already exists. */
1659 for (sl = specs; sl; sl = sl->next)
1660 if (name_len == sl->name_len && !strcmp (sl->name, name))
1665 /* Not found - make it. */
1666 sl = (struct spec_list *) xmalloc (sizeof (struct spec_list));
1667 sl->name = xstrdup (name);
1668 sl->name_len = name_len;
1669 sl->ptr_spec = &sl->ptr;
1671 *(sl->ptr_spec) = "";
1676 old_spec = *(sl->ptr_spec);
1677 *(sl->ptr_spec) = ((spec[0] == '+' && ISSPACE ((unsigned char)spec[1]))
1678 ? concat (old_spec, spec + 1, NULL)
1683 notice ("Setting spec %s to '%s'\n\n", name, *(sl->ptr_spec));
1686 /* Free the old spec. */
1687 if (old_spec && sl->alloc_p)
1688 free ((PTR) old_spec);
1693 /* Accumulate a command (program name and args), and run it. */
1695 /* Vector of pointers to arguments in the current line of specifications. */
1697 static const char **argbuf;
1699 /* Number of elements allocated in argbuf. */
1701 static int argbuf_length;
1703 /* Number of elements in argbuf currently in use (containing args). */
1705 static int argbuf_index;
1707 /* This is the list of suffixes and codes (%g/%u/%U/%j) and the associated
1708 temp file. If the HOST_BIT_BUCKET is used for %j, no entry is made for
1711 static struct temp_name {
1712 const char *suffix; /* suffix associated with the code. */
1713 int length; /* strlen (suffix). */
1714 int unique; /* Indicates whether %g or %u/%U was used. */
1715 const char *filename; /* associated filename. */
1716 int filename_length; /* strlen (filename). */
1717 struct temp_name *next;
1720 /* Number of commands executed so far. */
1722 static int execution_count;
1724 /* Number of commands that exited with a signal. */
1726 static int signal_count;
1728 /* Name with which this program was invoked. */
1730 static const char *programname;
1732 /* Allocate the argument vector. */
1738 argbuf = (const char **) xmalloc (argbuf_length * sizeof (const char *));
1741 /* Clear out the vector of arguments (after a command is executed). */
1749 /* Add one argument to the vector at the end.
1750 This is done when a space is seen or at the end of the line.
1751 If DELETE_ALWAYS is nonzero, the arg is a filename
1752 and the file should be deleted eventually.
1753 If DELETE_FAILURE is nonzero, the arg is a filename
1754 and the file should be deleted if this compilation fails. */
1757 store_arg (arg, delete_always, delete_failure)
1759 int delete_always, delete_failure;
1761 if (argbuf_index + 1 == argbuf_length)
1763 = (const char **) xrealloc (argbuf,
1764 (argbuf_length *= 2) * sizeof (const char *));
1766 argbuf[argbuf_index++] = arg;
1767 argbuf[argbuf_index] = 0;
1769 if (delete_always || delete_failure)
1770 record_temp_file (arg, delete_always, delete_failure);
1773 /* Load specs from a file name named FILENAME, replacing occurrences of
1774 various different types of line-endings, \r\n, \n\r and just \r, with
1778 load_specs (filename)
1779 const char *filename;
1783 struct stat statbuf;
1790 notice ("Reading specs from %s\n", filename);
1792 /* Open and stat the file. */
1793 desc = open (filename, O_RDONLY, 0);
1795 pfatal_with_name (filename);
1796 if (stat (filename, &statbuf) < 0)
1797 pfatal_with_name (filename);
1799 /* Read contents of file into BUFFER. */
1800 buffer = xmalloc ((unsigned) statbuf.st_size + 1);
1801 readlen = read (desc, buffer, (unsigned) statbuf.st_size);
1803 pfatal_with_name (filename);
1804 buffer[readlen] = 0;
1807 specs = xmalloc (readlen + 1);
1809 for (buffer_p = buffer; buffer_p && *buffer_p; buffer_p++)
1815 if (buffer_p > buffer && *(buffer_p - 1) == '\n') /* \n\r */
1817 else if (*(buffer_p + 1) == '\n') /* \r\n */
1831 /* Read compilation specs from a file named FILENAME,
1832 replacing the default ones.
1834 A suffix which starts with `*' is a definition for
1835 one of the machine-specific sub-specs. The "suffix" should be
1836 *asm, *cc1, *cpp, *link, *startfile, etc.
1837 The corresponding spec is stored in asm_spec, etc.,
1838 rather than in the `compilers' vector.
1840 Anything invalid in the file is a fatal error. */
1843 read_specs (filename, main_p)
1844 const char *filename;
1850 buffer = load_specs (filename);
1852 /* Scan BUFFER for specs, putting them in the vector. */
1858 char *in, *out, *p1, *p2, *p3;
1860 /* Advance P in BUFFER to the next nonblank nocomment line. */
1861 p = skip_whitespace (p);
1865 /* Is this a special command that starts with '%'? */
1866 /* Don't allow this for the main specs file, since it would
1867 encourage people to overwrite it. */
1868 if (*p == '%' && !main_p)
1871 while (*p && *p != '\n')
1877 if (!strncmp (p1, "%include", sizeof ("%include") - 1)
1878 && (p1[sizeof "%include" - 1] == ' '
1879 || p1[sizeof "%include" - 1] == '\t'))
1883 p1 += sizeof ("%include");
1884 while (*p1 == ' ' || *p1 == '\t')
1887 if (*p1++ != '<' || p[-2] != '>')
1888 fatal ("specs %%include syntax malformed after %ld characters",
1889 (long) (p1 - buffer + 1));
1892 new_filename = find_a_file (&startfile_prefixes, p1, R_OK, 0);
1893 read_specs (new_filename ? new_filename : p1, FALSE);
1896 else if (!strncmp (p1, "%include_noerr", sizeof "%include_noerr" - 1)
1897 && (p1[sizeof "%include_noerr" - 1] == ' '
1898 || p1[sizeof "%include_noerr" - 1] == '\t'))
1902 p1 += sizeof "%include_noerr";
1903 while (*p1 == ' ' || *p1 == '\t')
1906 if (*p1++ != '<' || p[-2] != '>')
1907 fatal ("specs %%include syntax malformed after %ld characters",
1908 (long) (p1 - buffer + 1));
1911 new_filename = find_a_file (&startfile_prefixes, p1, R_OK, 0);
1913 read_specs (new_filename, FALSE);
1914 else if (verbose_flag)
1915 notice ("could not find specs file %s\n", p1);
1918 else if (!strncmp (p1, "%rename", sizeof "%rename" - 1)
1919 && (p1[sizeof "%rename" - 1] == ' '
1920 || p1[sizeof "%rename" - 1] == '\t'))
1923 struct spec_list *sl;
1924 struct spec_list *newsl;
1926 /* Get original name. */
1927 p1 += sizeof "%rename";
1928 while (*p1 == ' ' || *p1 == '\t')
1931 if (! ISALPHA ((unsigned char) *p1))
1932 fatal ("specs %%rename syntax malformed after %ld characters",
1933 (long) (p1 - buffer));
1936 while (*p2 && !ISSPACE ((unsigned char) *p2))
1939 if (*p2 != ' ' && *p2 != '\t')
1940 fatal ("specs %%rename syntax malformed after %ld characters",
1941 (long) (p2 - buffer));
1945 while (*p2 == ' ' || *p2 == '\t')
1948 if (! ISALPHA ((unsigned char) *p2))
1949 fatal ("specs %%rename syntax malformed after %ld characters",
1950 (long) (p2 - buffer));
1952 /* Get new spec name. */
1954 while (*p3 && !ISSPACE ((unsigned char) *p3))
1958 fatal ("specs %%rename syntax malformed after %ld characters",
1959 (long) (p3 - buffer));
1962 for (sl = specs; sl; sl = sl->next)
1963 if (name_len == sl->name_len && !strcmp (sl->name, p1))
1967 fatal ("specs %s spec was not found to be renamed", p1);
1969 if (strcmp (p1, p2) == 0)
1972 for (newsl = specs; newsl; newsl = newsl->next)
1973 if (strcmp (newsl->name, p2) == 0)
1974 fatal ("%s: attempt to rename spec '%s' to already defined spec '%s'",
1979 notice ("rename spec %s to %s\n", p1, p2);
1981 notice ("spec is '%s'\n\n", *(sl->ptr_spec));
1985 set_spec (p2, *(sl->ptr_spec));
1987 free ((PTR) *(sl->ptr_spec));
1989 *(sl->ptr_spec) = "";
1994 fatal ("specs unknown %% command after %ld characters",
1995 (long) (p1 - buffer));
1998 /* Find the colon that should end the suffix. */
2000 while (*p1 && *p1 != ':' && *p1 != '\n')
2003 /* The colon shouldn't be missing. */
2005 fatal ("specs file malformed after %ld characters",
2006 (long) (p1 - buffer));
2008 /* Skip back over trailing whitespace. */
2010 while (p2 > buffer && (p2[-1] == ' ' || p2[-1] == '\t'))
2013 /* Copy the suffix to a string. */
2014 suffix = save_string (p, p2 - p);
2015 /* Find the next line. */
2016 p = skip_whitespace (p1 + 1);
2018 fatal ("specs file malformed after %ld characters",
2019 (long) (p - buffer));
2022 /* Find next blank line or end of string. */
2023 while (*p1 && !(*p1 == '\n' && (p1[1] == '\n' || p1[1] == '\0')))
2026 /* Specs end at the blank line and do not include the newline. */
2027 spec = save_string (p, p1 - p);
2030 /* Delete backslash-newline sequences from the spec. */
2035 if (in[0] == '\\' && in[1] == '\n')
2037 else if (in[0] == '#')
2038 while (*in && *in != '\n')
2046 if (suffix[0] == '*')
2048 if (! strcmp (suffix, "*link_command"))
2049 link_command_spec = spec;
2051 set_spec (suffix + 1, spec);
2055 /* Add this pair to the vector. */
2057 = ((struct compiler *)
2058 xrealloc (compilers,
2059 (n_compilers + 2) * sizeof (struct compiler)));
2061 compilers[n_compilers].suffix = suffix;
2062 compilers[n_compilers].spec = spec;
2064 memset (&compilers[n_compilers], 0, sizeof compilers[n_compilers]);
2068 link_command_spec = spec;
2071 if (link_command_spec == 0)
2072 fatal ("spec file has no spec for linking");
2075 /* Record the names of temporary files we tell compilers to write,
2076 and delete them at the end of the run. */
2078 /* This is the common prefix we use to make temp file names.
2079 It is chosen once for each run of this program.
2080 It is substituted into a spec by %g or %j.
2081 Thus, all temp file names contain this prefix.
2082 In practice, all temp file names start with this prefix.
2084 This prefix comes from the envvar TMPDIR if it is defined;
2085 otherwise, from the P_tmpdir macro if that is defined;
2086 otherwise, in /usr/tmp or /tmp;
2087 or finally the current directory if all else fails. */
2089 static const char *temp_filename;
2091 /* Length of the prefix. */
2093 static int temp_filename_length;
2095 /* Define the list of temporary files to delete. */
2100 struct temp_file *next;
2103 /* Queue of files to delete on success or failure of compilation. */
2104 static struct temp_file *always_delete_queue;
2105 /* Queue of files to delete on failure of compilation. */
2106 static struct temp_file *failure_delete_queue;
2108 /* Record FILENAME as a file to be deleted automatically.
2109 ALWAYS_DELETE nonzero means delete it if all compilation succeeds;
2110 otherwise delete it in any case.
2111 FAIL_DELETE nonzero means delete it if a compilation step fails;
2112 otherwise delete it in any case. */
2115 record_temp_file (filename, always_delete, fail_delete)
2116 const char *filename;
2120 char *const name = xstrdup (filename);
2124 struct temp_file *temp;
2125 for (temp = always_delete_queue; temp; temp = temp->next)
2126 if (! strcmp (name, temp->name))
2129 temp = (struct temp_file *) xmalloc (sizeof (struct temp_file));
2130 temp->next = always_delete_queue;
2132 always_delete_queue = temp;
2139 struct temp_file *temp;
2140 for (temp = failure_delete_queue; temp; temp = temp->next)
2141 if (! strcmp (name, temp->name))
2144 temp = (struct temp_file *) xmalloc (sizeof (struct temp_file));
2145 temp->next = failure_delete_queue;
2147 failure_delete_queue = temp;
2153 /* Delete all the temporary files whose names we previously recorded. */
2156 delete_if_ordinary (name)
2163 printf ("Delete %s? (y or n) ", name);
2167 while ((c = getchar ()) != '\n' && c != EOF)
2170 if (i == 'y' || i == 'Y')
2172 if (stat (name, &st) >= 0 && S_ISREG (st.st_mode))
2173 if (unlink (name) < 0)
2175 perror_with_name (name);
2179 delete_temp_files ()
2181 struct temp_file *temp;
2183 for (temp = always_delete_queue; temp; temp = temp->next)
2184 delete_if_ordinary (temp->name);
2185 always_delete_queue = 0;
2188 /* Delete all the files to be deleted on error. */
2191 delete_failure_queue ()
2193 struct temp_file *temp;
2195 for (temp = failure_delete_queue; temp; temp = temp->next)
2196 delete_if_ordinary (temp->name);
2200 clear_failure_queue ()
2202 failure_delete_queue = 0;
2205 /* Build a list of search directories from PATHS.
2206 PREFIX is a string to prepend to the list.
2207 If CHECK_DIR_P is nonzero we ensure the directory exists.
2208 This is used mostly by putenv_from_prefixes so we use `collect_obstack'.
2209 It is also used by the --print-search-dirs flag. */
2212 build_search_list (paths, prefix, check_dir_p)
2213 struct path_prefix *paths;
2217 int suffix_len = (machine_suffix) ? strlen (machine_suffix) : 0;
2219 = (just_machine_suffix) ? strlen (just_machine_suffix) : 0;
2220 int first_time = TRUE;
2221 struct prefix_list *pprefix;
2223 obstack_grow (&collect_obstack, prefix, strlen (prefix));
2224 obstack_1grow (&collect_obstack, '=');
2226 for (pprefix = paths->plist; pprefix != 0; pprefix = pprefix->next)
2228 int len = strlen (pprefix->prefix);
2232 || is_directory (pprefix->prefix, machine_suffix, 0)))
2235 obstack_1grow (&collect_obstack, PATH_SEPARATOR);
2238 obstack_grow (&collect_obstack, pprefix->prefix, len);
2239 obstack_grow (&collect_obstack, machine_suffix, suffix_len);
2242 if (just_machine_suffix
2243 && pprefix->require_machine_suffix == 2
2245 || is_directory (pprefix->prefix, just_machine_suffix, 0)))
2248 obstack_1grow (&collect_obstack, PATH_SEPARATOR);
2251 obstack_grow (&collect_obstack, pprefix->prefix, len);
2252 obstack_grow (&collect_obstack, just_machine_suffix,
2256 if (! pprefix->require_machine_suffix)
2259 obstack_1grow (&collect_obstack, PATH_SEPARATOR);
2262 obstack_grow (&collect_obstack, pprefix->prefix, len);
2266 obstack_1grow (&collect_obstack, '\0');
2267 return obstack_finish (&collect_obstack);
2270 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
2274 putenv_from_prefixes (paths, env_var)
2275 struct path_prefix *paths;
2276 const char *env_var;
2278 putenv (build_search_list (paths, env_var, 1));
2281 /* Check whether NAME can be accessed in MODE. This is like access,
2282 except that it never considers directories to be executable. */
2285 access_check (name, mode)
2293 if (stat (name, &st) < 0
2294 || S_ISDIR (st.st_mode))
2298 return access (name, mode);
2301 /* Search for NAME using the prefix list PREFIXES. MODE is passed to
2302 access to check permissions.
2303 Return 0 if not found, otherwise return its name, allocated with malloc. */
2306 find_a_file (pprefix, name, mode, multilib)
2307 struct path_prefix *pprefix;
2312 const char *const file_suffix =
2313 ((mode & X_OK) != 0 ? HOST_EXECUTABLE_SUFFIX : "");
2314 struct prefix_list *pl;
2315 int len = pprefix->max_len + strlen (name) + strlen (file_suffix) + 1;
2316 const char *multilib_name, *multilib_os_name;
2318 #ifdef DEFAULT_ASSEMBLER
2319 if (! strcmp (name, "as") && access (DEFAULT_ASSEMBLER, mode) == 0)
2320 return xstrdup (DEFAULT_ASSEMBLER);
2323 #ifdef DEFAULT_LINKER
2324 if (! strcmp(name, "ld") && access (DEFAULT_LINKER, mode) == 0)
2325 return xstrdup (DEFAULT_LINKER);
2329 len += strlen (machine_suffix);
2331 multilib_name = name;
2332 multilib_os_name = name;
2333 if (multilib && multilib_os_dir)
2335 int len1 = multilib_dir ? strlen (multilib_dir) + 1 : 0;
2336 int len2 = strlen (multilib_os_dir) + 1;
2338 len += len1 > len2 ? len1 : len2;
2340 multilib_name = ACONCAT ((multilib_dir, dir_separator_str, name,
2342 if (strcmp (multilib_os_dir, ".") != 0)
2343 multilib_os_name = ACONCAT ((multilib_os_dir, dir_separator_str, name,
2347 temp = xmalloc (len);
2349 /* Determine the filename to execute (special case for absolute paths). */
2351 if (IS_ABSOLUTE_PATHNAME (name))
2353 if (access (name, mode) == 0)
2355 strcpy (temp, name);
2360 for (pl = pprefix->plist; pl; pl = pl->next)
2362 const char *this_name
2363 = pl->os_multilib ? multilib_os_name : multilib_name;
2367 /* Some systems have a suffix for executable files.
2368 So try appending that first. */
2369 if (file_suffix[0] != 0)
2371 strcpy (temp, pl->prefix);
2372 strcat (temp, machine_suffix);
2373 strcat (temp, multilib_name);
2374 strcat (temp, file_suffix);
2375 if (access_check (temp, mode) == 0)
2377 if (pl->used_flag_ptr != 0)
2378 *pl->used_flag_ptr = 1;
2383 /* Now try just the multilib_name. */
2384 strcpy (temp, pl->prefix);
2385 strcat (temp, machine_suffix);
2386 strcat (temp, multilib_name);
2387 if (access_check (temp, mode) == 0)
2389 if (pl->used_flag_ptr != 0)
2390 *pl->used_flag_ptr = 1;
2395 /* Certain prefixes are tried with just the machine type,
2396 not the version. This is used for finding as, ld, etc. */
2397 if (just_machine_suffix && pl->require_machine_suffix == 2)
2399 /* Some systems have a suffix for executable files.
2400 So try appending that first. */
2401 if (file_suffix[0] != 0)
2403 strcpy (temp, pl->prefix);
2404 strcat (temp, just_machine_suffix);
2405 strcat (temp, multilib_name);
2406 strcat (temp, file_suffix);
2407 if (access_check (temp, mode) == 0)
2409 if (pl->used_flag_ptr != 0)
2410 *pl->used_flag_ptr = 1;
2415 strcpy (temp, pl->prefix);
2416 strcat (temp, just_machine_suffix);
2417 strcat (temp, multilib_name);
2418 if (access_check (temp, mode) == 0)
2420 if (pl->used_flag_ptr != 0)
2421 *pl->used_flag_ptr = 1;
2426 /* Certain prefixes can't be used without the machine suffix
2427 when the machine or version is explicitly specified. */
2428 if (! pl->require_machine_suffix)
2430 /* Some systems have a suffix for executable files.
2431 So try appending that first. */
2432 if (file_suffix[0] != 0)
2434 strcpy (temp, pl->prefix);
2435 strcat (temp, this_name);
2436 strcat (temp, file_suffix);
2437 if (access_check (temp, mode) == 0)
2439 if (pl->used_flag_ptr != 0)
2440 *pl->used_flag_ptr = 1;
2445 strcpy (temp, pl->prefix);
2446 strcat (temp, this_name);
2447 if (access_check (temp, mode) == 0)
2449 if (pl->used_flag_ptr != 0)
2450 *pl->used_flag_ptr = 1;
2460 /* Ranking of prefixes in the sort list. -B prefixes are put before
2463 enum path_prefix_priority
2465 PREFIX_PRIORITY_B_OPT,
2466 PREFIX_PRIORITY_LAST
2469 /* Add an entry for PREFIX in PLIST. The PLIST is kept in assending
2470 order according to PRIORITY. Within each PRIORITY, new entries are
2473 If WARN is nonzero, we will warn if no file is found
2474 through this prefix. WARN should point to an int
2475 which will be set to 1 if this entry is used.
2477 COMPONENT is the value to be passed to update_path.
2479 REQUIRE_MACHINE_SUFFIX is 1 if this prefix can't be used without
2480 the complete value of machine_suffix.
2481 2 means try both machine_suffix and just_machine_suffix. */
2484 add_prefix (pprefix, prefix, component, priority, require_machine_suffix,
2486 struct path_prefix *pprefix;
2488 const char *component;
2489 /* enum prefix_priority */ int priority;
2490 int require_machine_suffix;
2494 struct prefix_list *pl, **prev;
2497 for (prev = &pprefix->plist;
2498 (*prev) != NULL && (*prev)->priority <= priority;
2499 prev = &(*prev)->next)
2502 /* Keep track of the longest prefix */
2504 prefix = update_path (prefix, component);
2505 len = strlen (prefix);
2506 if (len > pprefix->max_len)
2507 pprefix->max_len = len;
2509 pl = (struct prefix_list *) xmalloc (sizeof (struct prefix_list));
2510 pl->prefix = prefix;
2511 pl->require_machine_suffix = require_machine_suffix;
2512 pl->used_flag_ptr = warn;
2513 pl->priority = priority;
2514 pl->os_multilib = os_multilib;
2518 /* Insert after PREV */
2523 /* Execute the command specified by the arguments on the current line of spec.
2524 When using pipes, this includes several piped-together commands
2525 with `|' between them.
2527 Return 0 if successful, -1 if failed. */
2533 int n_commands; /* # of command. */
2537 const char *prog; /* program name. */
2538 const char **argv; /* vector of args. */
2539 int pid; /* pid of process for this command. */
2542 struct command *commands; /* each command buffer with above info. */
2544 if (processing_spec_function)
2547 /* Count # of piped commands. */
2548 for (n_commands = 1, i = 0; i < argbuf_index; i++)
2549 if (strcmp (argbuf[i], "|") == 0)
2552 /* Get storage for each command. */
2553 commands = (struct command *) alloca (n_commands * sizeof (struct command));
2555 /* Split argbuf into its separate piped processes,
2556 and record info about each one.
2557 Also search for the programs that are to be run. */
2559 commands[0].prog = argbuf[0]; /* first command. */
2560 commands[0].argv = &argbuf[0];
2561 string = find_a_file (&exec_prefixes, commands[0].prog, X_OK, 0);
2564 commands[0].argv[0] = string;
2566 for (n_commands = 1, i = 0; i < argbuf_index; i++)
2567 if (strcmp (argbuf[i], "|") == 0)
2568 { /* each command. */
2569 #if defined (__MSDOS__) || defined (OS2) || defined (VMS)
2570 fatal ("-pipe not supported");
2572 argbuf[i] = 0; /* termination of command args. */
2573 commands[n_commands].prog = argbuf[i + 1];
2574 commands[n_commands].argv = &argbuf[i + 1];
2575 string = find_a_file (&exec_prefixes, commands[n_commands].prog,
2578 commands[n_commands].argv[0] = string;
2582 argbuf[argbuf_index] = 0;
2584 /* If -v, print what we are about to do, and maybe query. */
2588 /* For help listings, put a blank line between sub-processes. */
2589 if (print_help_list)
2590 fputc ('\n', stderr);
2592 /* Print each piped command as a separate line. */
2593 for (i = 0; i < n_commands; i++)
2595 const char *const *j;
2597 if (verbose_only_flag)
2599 for (j = commands[i].argv; *j; j++)
2602 fprintf (stderr, " \"");
2603 for (p = *j; *p; ++p)
2605 if (*p == '"' || *p == '\\' || *p == '$')
2606 fputc ('\\', stderr);
2609 fputc ('"', stderr);
2613 for (j = commands[i].argv; *j; j++)
2614 fprintf (stderr, " %s", *j);
2616 /* Print a pipe symbol after all but the last command. */
2617 if (i + 1 != n_commands)
2618 fprintf (stderr, " |");
2619 fprintf (stderr, "\n");
2622 if (verbose_only_flag != 0)
2625 notice ("\nGo ahead? (y or n) ");
2629 while (getchar () != '\n')
2632 if (i != 'y' && i != 'Y')
2637 #ifdef ENABLE_VALGRIND_CHECKING
2638 /* Run the each command through valgrind. To simplifiy prepending the
2639 path to valgrind and the option "-q" (for quiet operation unless
2640 something triggers), we allocate a separate argv array. */
2642 for (i = 0; i < n_commands; i++)
2648 for (argc = 0; commands[i].argv[argc] != NULL; argc++)
2651 argv = alloca ((argc + 3) * sizeof (char *));
2653 argv[0] = VALGRIND_PATH;
2655 for (j = 2; j < argc + 2; j++)
2656 argv[j] = commands[i].argv[j - 2];
2659 commands[i].argv = argv;
2660 commands[i].prog = argv[0];
2664 /* Run each piped subprocess. */
2666 for (i = 0; i < n_commands; i++)
2668 char *errmsg_fmt, *errmsg_arg;
2669 const char *string = commands[i].argv[0];
2671 /* For some bizarre reason, the second argument of execvp() is
2672 char *const *, not const char *const *. */
2673 commands[i].pid = pexecute (string, (char *const *) commands[i].argv,
2674 programname, temp_filename,
2675 &errmsg_fmt, &errmsg_arg,
2676 ((i == 0 ? PEXECUTE_FIRST : 0)
2677 | (i + 1 == n_commands ? PEXECUTE_LAST : 0)
2678 | (string == commands[i].prog
2679 ? PEXECUTE_SEARCH : 0)
2680 | (verbose_flag ? PEXECUTE_VERBOSE : 0)));
2682 if (commands[i].pid == -1)
2683 pfatal_pexecute (errmsg_fmt, errmsg_arg);
2685 if (string != commands[i].prog)
2686 free ((PTR) string);
2691 /* Wait for all the subprocesses to finish.
2692 We don't care what order they finish in;
2693 we know that N_COMMANDS waits will get them all.
2694 Ignore subprocesses that we don't know about,
2695 since they can be spawned by the process that exec'ed us. */
2699 #ifdef HAVE_GETRUSAGE
2701 double ut = 0.0, st = 0.0;
2704 for (i = 0; i < n_commands;)
2710 pid = pwait (commands[i].pid, &status, 0);
2714 #ifdef HAVE_GETRUSAGE
2717 /* getrusage returns the total resource usage of all children
2718 up to now. Copy the previous values into prus, get the
2719 current statistics, then take the difference. */
2722 getrusage (RUSAGE_CHILDREN, &rus);
2723 d.tv_sec = rus.ru_utime.tv_sec - prus.ru_utime.tv_sec;
2724 d.tv_usec = rus.ru_utime.tv_usec - prus.ru_utime.tv_usec;
2725 ut = (double) d.tv_sec + (double) d.tv_usec / 1.0e6;
2727 d.tv_sec = rus.ru_stime.tv_sec - prus.ru_stime.tv_sec;
2728 d.tv_usec = rus.ru_stime.tv_usec - prus.ru_stime.tv_usec;
2729 st = (double) d.tv_sec + (double) d.tv_usec / 1.0e6;
2733 for (j = 0; j < n_commands; j++)
2734 if (commands[j].pid == pid)
2737 if (WIFSIGNALED (status))
2740 /* SIGPIPE is a special case. It happens in -pipe mode
2741 when the compiler dies before the preprocessor is
2742 done, or the assembler dies before the compiler is
2743 done. There's generally been an error already, and
2744 this is just fallout. So don't generate another error
2745 unless we would otherwise have succeeded. */
2746 if (WTERMSIG (status) == SIGPIPE
2747 && (signal_count || greatest_status >= MIN_FATAL_STATUS))
2752 Internal error: %s (program %s)\n\
2753 Please submit a full bug report.\n\
2754 See %s for instructions.",
2755 strsignal (WTERMSIG (status)), commands[j].prog,
2760 else if (WIFEXITED (status)
2761 && WEXITSTATUS (status) >= MIN_FATAL_STATUS)
2763 if (WEXITSTATUS (status) > greatest_status)
2764 greatest_status = WEXITSTATUS (status);
2767 #ifdef HAVE_GETRUSAGE
2768 if (report_times && ut + st != 0)
2769 notice ("# %s %.2f %.2f\n", commands[j].prog, ut, st);
2778 /* Find all the switches given to us
2779 and make a vector describing them.
2780 The elements of the vector are strings, one per switch given.
2781 If a switch uses following arguments, then the `part1' field
2782 is the switch itself and the `args' field
2783 is a null-terminated vector containing the following arguments.
2784 The `live_cond' field is:
2786 1 if the switch is true in a conditional spec,
2787 -1 if false (overridden by a later switch)
2788 -2 if this switch should be ignored (used in %{<S})
2789 The `validated' field is nonzero if any spec has looked at this switch;
2790 if it remains zero at the end of the run, it must be meaningless. */
2793 #define SWITCH_FALSE -1
2794 #define SWITCH_IGNORE -2
2795 #define SWITCH_LIVE 1
2802 unsigned char validated;
2803 unsigned char ordering;
2806 static struct switchstr *switches;
2808 static int n_switches;
2813 const char *language;
2816 /* Also a vector of input files specified. */
2818 static struct infile *infiles;
2822 /* This counts the number of libraries added by lang_specific_driver, so that
2823 we can tell if there were any user supplied any files or libraries. */
2825 static int added_libraries;
2827 /* And a vector of corresponding output files is made up later. */
2829 const char **outfiles;
2831 /* Used to track if none of the -B paths are used. */
2834 /* Gives value to pass as "warn" to add_prefix for standard prefixes. */
2835 static int *warn_std_ptr = 0;
2837 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2839 /* Convert NAME to a new name if it is the standard suffix. DO_EXE
2840 is true if we should look for an executable suffix. DO_OBJ
2841 is true if we should look for an object suffix. */
2844 convert_filename (name, do_exe, do_obj)
2846 int do_exe ATTRIBUTE_UNUSED;
2847 int do_obj ATTRIBUTE_UNUSED;
2849 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2857 len = strlen (name);
2859 #ifdef HAVE_TARGET_OBJECT_SUFFIX
2860 /* Convert x.o to x.obj if TARGET_OBJECT_SUFFIX is ".obj". */
2861 if (do_obj && len > 2
2862 && name[len - 2] == '.'
2863 && name[len - 1] == 'o')
2865 obstack_grow (&obstack, name, len - 2);
2866 obstack_grow0 (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX));
2867 name = obstack_finish (&obstack);
2871 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2872 /* If there is no filetype, make it the executable suffix (which includes
2873 the "."). But don't get confused if we have just "-o". */
2874 if (! do_exe || TARGET_EXECUTABLE_SUFFIX[0] == 0 || (len == 2 && name[0] == '-'))
2877 for (i = len - 1; i >= 0; i--)
2878 if (IS_DIR_SEPARATOR (name[i]))
2881 for (i++; i < len; i++)
2885 obstack_grow (&obstack, name, len);
2886 obstack_grow0 (&obstack, TARGET_EXECUTABLE_SUFFIX,
2887 strlen (TARGET_EXECUTABLE_SUFFIX));
2888 name = obstack_finish (&obstack);
2895 /* Display the command line switches accepted by gcc. */
2899 printf (_("Usage: %s [options] file...\n"), programname);
2900 fputs (_("Options:\n"), stdout);
2902 fputs (_(" -pass-exit-codes Exit with highest error code from a phase\n"), stdout);
2903 fputs (_(" --help Display this information\n"), stdout);
2904 fputs (_(" --target-help Display target specific command line options\n"), stdout);
2906 fputs (_(" (Use '-v --help' to display command line options of sub-processes)\n"), stdout);
2907 fputs (_(" -dumpspecs Display all of the built in spec strings\n"), stdout);
2908 fputs (_(" -dumpversion Display the version of the compiler\n"), stdout);
2909 fputs (_(" -dumpmachine Display the compiler's target processor\n"), stdout);
2910 fputs (_(" -print-search-dirs Display the directories in the compiler's search path\n"), stdout);
2911 fputs (_(" -print-libgcc-file-name Display the name of the compiler's companion library\n"), stdout);
2912 fputs (_(" -print-file-name=<lib> Display the full path to library <lib>\n"), stdout);
2913 fputs (_(" -print-prog-name=<prog> Display the full path to compiler component <prog>\n"), stdout);
2914 fputs (_(" -print-multi-directory Display the root directory for versions of libgcc\n"), stdout);
2916 -print-multi-lib Display the mapping between command line options and\n\
2917 multiple library search directories\n"), stdout);
2918 fputs (_(" -print-multi-os-directory Display the relative path to OS libraries\n"), stdout);
2919 fputs (_(" -Wa,<options> Pass comma-separated <options> on to the assembler\n"), stdout);
2920 fputs (_(" -Wp,<options> Pass comma-separated <options> on to the preprocessor\n"), stdout);
2921 fputs (_(" -Wl,<options> Pass comma-separated <options> on to the linker\n"), stdout);
2922 fputs (_(" -Xlinker <arg> Pass <arg> on to the linker\n"), stdout);
2923 fputs (_(" -save-temps Do not delete intermediate files\n"), stdout);
2924 fputs (_(" -pipe Use pipes rather than intermediate files\n"), stdout);
2925 fputs (_(" -time Time the execution of each subprocess\n"), stdout);
2926 fputs (_(" -specs=<file> Override built-in specs with the contents of <file>\n"), stdout);
2927 fputs (_(" -std=<standard> Assume that the input sources are for <standard>\n"), stdout);
2928 fputs (_(" -B <directory> Add <directory> to the compiler's search paths\n"), stdout);
2929 fputs (_(" -b <machine> Run gcc for target <machine>, if installed\n"), stdout);
2930 fputs (_(" -V <version> Run gcc version number <version>, if installed\n"), stdout);
2931 fputs (_(" -v Display the programs invoked by the compiler\n"), stdout);
2932 fputs (_(" -### Like -v but options quoted and commands not executed\n"), stdout);
2933 fputs (_(" -E Preprocess only; do not compile, assemble or link\n"), stdout);
2934 fputs (_(" -S Compile only; do not assemble or link\n"), stdout);
2935 fputs (_(" -c Compile and assemble, but do not link\n"), stdout);
2936 fputs (_(" -o <file> Place the output into <file>\n"), stdout);
2938 -x <language> Specify the language of the following input files\n\
2939 Permissable languages include: c c++ assembler none\n\
2940 'none' means revert to the default behavior of\n\
2941 guessing the language based on the file's extension\n\
2945 \nOptions starting with -g, -f, -m, -O, -W, or --param are automatically\n\
2946 passed on to the various sub-processes invoked by %s. In order to pass\n\
2947 other options on to these processes the -W<letter> options must be used.\n\
2950 /* The rest of the options are displayed by invocations of the various
2955 add_preprocessor_option (option, len)
2959 n_preprocessor_options++;
2961 if (! preprocessor_options)
2962 preprocessor_options
2963 = (char **) xmalloc (n_preprocessor_options * sizeof (char *));
2965 preprocessor_options
2966 = (char **) xrealloc (preprocessor_options,
2967 n_preprocessor_options * sizeof (char *));
2969 preprocessor_options [n_preprocessor_options - 1] =
2970 save_string (option, len);
2974 add_assembler_option (option, len)
2978 n_assembler_options++;
2980 if (! assembler_options)
2982 = (char **) xmalloc (n_assembler_options * sizeof (char *));
2985 = (char **) xrealloc (assembler_options,
2986 n_assembler_options * sizeof (char *));
2988 assembler_options [n_assembler_options - 1] = save_string (option, len);
2992 add_linker_option (option, len)
2998 if (! linker_options)
3000 = (char **) xmalloc (n_linker_options * sizeof (char *));
3003 = (char **) xrealloc (linker_options,
3004 n_linker_options * sizeof (char *));
3006 linker_options [n_linker_options - 1] = save_string (option, len);
3009 /* Create the vector `switches' and its contents.
3010 Store its length in `n_switches'. */
3013 process_command (argc, argv)
3015 const char *const *argv;
3020 const char *spec_lang = 0;
3021 int last_language_n_infiles;
3024 int lang_n_infiles = 0;
3025 #ifdef MODIFY_TARGET_NAME
3026 int is_modify_target_name;
3030 GET_ENVIRONMENT (gcc_exec_prefix, "GCC_EXEC_PREFIX");
3034 added_libraries = 0;
3036 /* Figure compiler version from version string. */
3038 compiler_version = temp1 = xstrdup (version_string);
3040 for (; *temp1; ++temp1)
3049 /* If there is a -V or -b option (or both), process it now, before
3050 trying to interpret the rest of the command line. */
3051 if (argc > 1 && argv[1][0] == '-'
3052 && (argv[1][1] == 'V' || argv[1][1] == 'b'))
3054 const char *new_version = DEFAULT_TARGET_VERSION;
3055 const char *new_machine = DEFAULT_TARGET_MACHINE;
3056 const char *progname = argv[0];
3061 while (argc > 1 && argv[1][0] == '-'
3062 && (argv[1][1] == 'V' || argv[1][1] == 'b'))
3064 char opt = argv[1][1];
3066 if (argv[1][2] != '\0')
3079 fatal ("`-%c' option must have argument", opt);
3086 for (baselen = strlen (progname); baselen > 0; baselen--)
3087 if (IS_DIR_SEPARATOR (progname[baselen-1]))
3089 new_argv0 = xmemdup (progname, baselen,
3090 baselen + concat_length (new_version, new_machine,
3091 "-gcc-", NULL) + 1);
3092 strcpy (new_argv0 + baselen, new_machine);
3093 strcat (new_argv0, "-gcc-");
3094 strcat (new_argv0, new_version);
3096 new_argv = xmemdup (argv, (argc + 1) * sizeof (argv[0]),
3097 (argc + 1) * sizeof (argv[0]));
3098 new_argv[0] = new_argv0;
3100 execvp (new_argv0, new_argv);
3101 fatal ("couldn't run `%s': %s", new_argv0, xstrerror (errno));
3104 /* Set up the default search paths. If there is no GCC_EXEC_PREFIX,
3105 see if we can create it from the pathname specified in argv[0]. */
3108 /* FIXME: make_relative_prefix doesn't yet work for VMS. */
3109 if (!gcc_exec_prefix)
3111 gcc_exec_prefix = make_relative_prefix (argv[0], standard_bindir_prefix,
3112 standard_exec_prefix);
3113 if (gcc_exec_prefix)
3114 putenv (concat ("GCC_EXEC_PREFIX=", gcc_exec_prefix, NULL));
3118 if (gcc_exec_prefix)
3120 int len = strlen (gcc_exec_prefix);
3122 if (len > (int) sizeof ("/lib/gcc-lib/") - 1
3123 && (IS_DIR_SEPARATOR (gcc_exec_prefix[len-1])))
3125 temp = gcc_exec_prefix + len - sizeof ("/lib/gcc-lib/") + 1;
3126 if (IS_DIR_SEPARATOR (*temp)
3127 && strncmp (temp + 1, "lib", 3) == 0
3128 && IS_DIR_SEPARATOR (temp[4])
3129 && strncmp (temp + 5, "gcc-lib", 7) == 0)
3130 len -= sizeof ("/lib/gcc-lib/") - 1;
3133 set_std_prefix (gcc_exec_prefix, len);
3134 add_prefix (&exec_prefixes, gcc_exec_prefix, "GCC",
3135 PREFIX_PRIORITY_LAST, 0, NULL, 0);
3136 add_prefix (&startfile_prefixes, gcc_exec_prefix, "GCC",
3137 PREFIX_PRIORITY_LAST, 0, NULL, 0);
3140 /* COMPILER_PATH and LIBRARY_PATH have values
3141 that are lists of directory names with colons. */
3143 GET_ENVIRONMENT (temp, "COMPILER_PATH");
3146 const char *startp, *endp;
3147 char *nstore = (char *) alloca (strlen (temp) + 3);
3149 startp = endp = temp;
3152 if (*endp == PATH_SEPARATOR || *endp == 0)
3154 strncpy (nstore, startp, endp - startp);
3156 strcpy (nstore, concat (".", dir_separator_str, NULL));
3157 else if (!IS_DIR_SEPARATOR (endp[-1]))
3159 nstore[endp - startp] = DIR_SEPARATOR;
3160 nstore[endp - startp + 1] = 0;
3163 nstore[endp - startp] = 0;
3164 add_prefix (&exec_prefixes, nstore, 0,
3165 PREFIX_PRIORITY_LAST, 0, NULL, 0);
3166 add_prefix (&include_prefixes,
3167 concat (nstore, "include", NULL),
3168 0, PREFIX_PRIORITY_LAST, 0, NULL, 0);
3171 endp = startp = endp + 1;
3178 GET_ENVIRONMENT (temp, LIBRARY_PATH_ENV);
3179 if (temp && *cross_compile == '0')
3181 const char *startp, *endp;
3182 char *nstore = (char *) alloca (strlen (temp) + 3);
3184 startp = endp = temp;
3187 if (*endp == PATH_SEPARATOR || *endp == 0)
3189 strncpy (nstore, startp, endp - startp);
3191 strcpy (nstore, concat (".", dir_separator_str, NULL));
3192 else if (!IS_DIR_SEPARATOR (endp[-1]))
3194 nstore[endp - startp] = DIR_SEPARATOR;
3195 nstore[endp - startp + 1] = 0;
3198 nstore[endp - startp] = 0;
3199 add_prefix (&startfile_prefixes, nstore, NULL,
3200 PREFIX_PRIORITY_LAST, 0, NULL, 1);
3203 endp = startp = endp + 1;
3210 /* Use LPATH like LIBRARY_PATH (for the CMU build program). */
3211 GET_ENVIRONMENT (temp, "LPATH");
3212 if (temp && *cross_compile == '0')
3214 const char *startp, *endp;
3215 char *nstore = (char *) alloca (strlen (temp) + 3);
3217 startp = endp = temp;
3220 if (*endp == PATH_SEPARATOR || *endp == 0)
3222 strncpy (nstore, startp, endp - startp);
3224 strcpy (nstore, concat (".", dir_separator_str, NULL));
3225 else if (!IS_DIR_SEPARATOR (endp[-1]))
3227 nstore[endp - startp] = DIR_SEPARATOR;
3228 nstore[endp - startp + 1] = 0;
3231 nstore[endp - startp] = 0;
3232 add_prefix (&startfile_prefixes, nstore, NULL,
3233 PREFIX_PRIORITY_LAST, 0, NULL, 1);
3236 endp = startp = endp + 1;
3243 /* Convert new-style -- options to old-style. */
3244 translate_options (&argc, &argv);
3246 /* Do language-specific adjustment/addition of flags. */
3247 lang_specific_driver (&argc, &argv, &added_libraries);
3249 /* Scan argv twice. Here, the first time, just count how many switches
3250 there will be in their vector, and how many input files in theirs.
3251 Here we also parse the switches that cc itself uses (e.g. -v). */
3253 for (i = 1; i < argc; i++)
3255 if (! strcmp (argv[i], "-dumpspecs"))
3257 struct spec_list *sl;
3259 for (sl = specs; sl; sl = sl->next)
3260 printf ("*%s:\n%s\n\n", sl->name, *(sl->ptr_spec));
3261 if (link_command_spec)
3262 printf ("*link_command:\n%s\n\n", link_command_spec);
3265 else if (! strcmp (argv[i], "-dumpversion"))
3267 printf ("%s\n", spec_version);
3270 else if (! strcmp (argv[i], "-dumpmachine"))
3272 printf ("%s\n", spec_machine);
3275 else if (strcmp (argv[i], "-fversion") == 0)
3277 /* translate_options () has turned --version into -fversion. */
3278 printf (_("%s (GCC) %s\n"), programname, version_string);
3279 fputs (_("Copyright (C) 2002 Free Software Foundation, Inc.\n"),
3281 fputs (_("This is free software; see the source for copying conditions. There is NO\n\
3282 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\n"),
3286 else if (strcmp (argv[i], "-fhelp") == 0)
3288 /* translate_options () has turned --help into -fhelp. */
3289 print_help_list = 1;
3291 /* We will be passing a dummy file on to the sub-processes. */
3295 /* CPP driver cannot obtain switch from cc1_options. */
3297 add_preprocessor_option ("--help", 6);
3298 add_assembler_option ("--help", 6);
3299 add_linker_option ("--help", 6);
3301 else if (strcmp (argv[i], "-ftarget-help") == 0)
3303 /* translate_options() has turned --target-help into -ftarget-help. */
3304 target_help_flag = 1;
3306 /* We will be passing a dummy file on to the sub-processes. */
3310 /* CPP driver cannot obtain switch from cc1_options. */
3312 add_preprocessor_option ("--target-help", 13);
3313 add_assembler_option ("--target-help", 13);
3314 add_linker_option ("--target-help", 13);
3316 else if (! strcmp (argv[i], "-pass-exit-codes"))
3318 pass_exit_codes = 1;
3321 else if (! strcmp (argv[i], "-print-search-dirs"))
3322 print_search_dirs = 1;
3323 else if (! strcmp (argv[i], "-print-libgcc-file-name"))
3324 print_file_name = "libgcc.a";
3325 else if (! strncmp (argv[i], "-print-file-name=", 17))
3326 print_file_name = argv[i] + 17;
3327 else if (! strncmp (argv[i], "-print-prog-name=", 17))
3328 print_prog_name = argv[i] + 17;
3329 else if (! strcmp (argv[i], "-print-multi-lib"))
3330 print_multi_lib = 1;
3331 else if (! strcmp (argv[i], "-print-multi-directory"))
3332 print_multi_directory = 1;
3333 else if (! strcmp (argv[i], "-print-multi-os-directory"))
3334 print_multi_os_directory = 1;
3335 else if (! strncmp (argv[i], "-Wa,", 4))
3338 /* Pass the rest of this option to the assembler. */
3340 /* Split the argument at commas. */
3342 for (j = 4; argv[i][j]; j++)
3343 if (argv[i][j] == ',')
3345 add_assembler_option (argv[i] + prev, j - prev);
3349 /* Record the part after the last comma. */
3350 add_assembler_option (argv[i] + prev, j - prev);
3352 else if (! strncmp (argv[i], "-Wp,", 4))
3355 /* Pass the rest of this option to the preprocessor. */
3357 /* Split the argument at commas. */
3359 for (j = 4; argv[i][j]; j++)
3360 if (argv[i][j] == ',')
3362 add_preprocessor_option (argv[i] + prev, j - prev);
3366 /* Record the part after the last comma. */
3367 add_preprocessor_option (argv[i] + prev, j - prev);
3369 else if (argv[i][0] == '+' && argv[i][1] == 'e')
3370 /* The +e options to the C++ front-end. */
3372 else if (strncmp (argv[i], "-Wl,", 4) == 0)
3375 /* Split the argument at commas. */
3376 for (j = 3; argv[i][j]; j++)
3377 n_infiles += (argv[i][j] == ',');
3379 else if (strcmp (argv[i], "-Xlinker") == 0)
3382 fatal ("argument to `-Xlinker' is missing");
3387 else if (strcmp (argv[i], "-l") == 0)
3390 fatal ("argument to `-l' is missing");
3395 else if (strncmp (argv[i], "-l", 2) == 0)
3397 else if (strcmp (argv[i], "-save-temps") == 0)
3399 save_temps_flag = 1;
3402 else if (strcmp (argv[i], "-specs") == 0)
3404 struct user_specs *user = (struct user_specs *)
3405 xmalloc (sizeof (struct user_specs));
3407 fatal ("argument to `-specs' is missing");
3409 user->next = (struct user_specs *) 0;
3410 user->filename = argv[i];
3411 if (user_specs_tail)
3412 user_specs_tail->next = user;
3414 user_specs_head = user;
3415 user_specs_tail = user;
3417 else if (strncmp (argv[i], "-specs=", 7) == 0)
3419 struct user_specs *user = (struct user_specs *)
3420 xmalloc (sizeof (struct user_specs));
3421 if (strlen (argv[i]) == 7)
3422 fatal ("argument to `-specs=' is missing");
3424 user->next = (struct user_specs *) 0;
3425 user->filename = argv[i] + 7;
3426 if (user_specs_tail)
3427 user_specs_tail->next = user;
3429 user_specs_head = user;
3430 user_specs_tail = user;
3432 else if (strcmp (argv[i], "-time") == 0)
3434 else if (strcmp (argv[i], "-###") == 0)
3436 /* This is similar to -v except that there is no execution
3437 of the commands and the echoed arguments are quoted. It
3438 is intended for use in shell scripts to capture the
3439 driver-generated command line. */
3440 verbose_only_flag++;
3443 else if (argv[i][0] == '-' && argv[i][1] != 0)
3445 const char *p = &argv[i][1];
3452 fatal ("`-%c' must come at the start of the command line", c);
3460 if (p[1] == 0 && i + 1 == argc)
3461 fatal ("argument to `-B' is missing");
3467 len = strlen (value);
3469 /* Catch the case where the user has forgotten to append a
3470 directory separator to the path. Note, they may be using
3471 -B to add an executable name prefix, eg "i386-elf-", in
3472 order to distinguish between multiple installations of
3473 GCC in the same directory. Hence we must check to see
3474 if appending a directory separator actually makes a
3475 valid directory name. */
3476 if (! IS_DIR_SEPARATOR (value [len - 1])
3477 && is_directory (value, "", 0))
3479 char *tmp = xmalloc (len + 2);
3480 strcpy (tmp, value);
3481 tmp[len] = DIR_SEPARATOR;
3486 /* As a kludge, if the arg is "[foo/]stageN/", just
3487 add "[foo/]include" to the include prefix. */
3490 && (IS_DIR_SEPARATOR (value[len - 8]))))
3491 && strncmp (value + len - 7, "stage", 5) == 0
3492 && ISDIGIT (value[len - 2])
3493 && (IS_DIR_SEPARATOR (value[len - 1])))
3496 add_prefix (&include_prefixes, "include", NULL,
3497 PREFIX_PRIORITY_B_OPT, 0, NULL, 0);
3500 char * string = xmalloc (len + 1);
3502 strncpy (string, value, len - 7);
3503 strcpy (string + len - 7, "include");
3504 add_prefix (&include_prefixes, string, NULL,
3505 PREFIX_PRIORITY_B_OPT, 0, NULL, 0);
3509 add_prefix (&exec_prefixes, value, NULL,
3510 PREFIX_PRIORITY_B_OPT, 0, &warn_B, 0);
3511 add_prefix (&startfile_prefixes, value, NULL,
3512 PREFIX_PRIORITY_B_OPT, 0, &warn_B, 0);
3513 add_prefix (&include_prefixes, concat (value, "include", NULL),
3514 NULL, PREFIX_PRIORITY_B_OPT, 0, NULL, 0);
3519 case 'v': /* Print our subcommands and print versions. */
3521 /* If they do anything other than exactly `-v', don't set
3522 verbose_flag; rather, continue on to give the error. */
3540 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3545 /* Forward scan, just in case -S or -c is specified
3552 if (argv[j][0] == '-')
3554 if (SWITCH_CURTAILS_COMPILATION (argv[j][1])
3560 else if ((skip = SWITCH_TAKES_ARG (argv[j][1])))
3561 j += skip - (argv[j][2] != 0);
3562 else if ((skip = WORD_SWITCH_TAKES_ARG (argv[j] + 1)))
3569 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX) || defined(HAVE_TARGET_OBJECT_SUFFIX)
3571 argv[i + 1] = convert_filename (argv[i + 1], ! have_c, 0);
3573 argv[i] = convert_filename (argv[i], ! have_c, 0);
3580 #ifdef MODIFY_TARGET_NAME
3581 is_modify_target_name = 0;
3583 for (j = 0; j < ARRAY_SIZE (modify_target); j++)
3584 if (! strcmp (argv[i], modify_target[j].sw))
3587 = (char *) xmalloc (strlen (modify_target[j].str)
3588 + strlen (spec_machine));
3591 int made_addition = 0;
3593 is_modify_target_name = 1;
3594 for (p = spec_machine, q = new_name; *p != 0; )
3596 if (modify_target[j].add_del == DELETE
3597 && (! strncmp (q, modify_target[j].str,
3598 strlen (modify_target[j].str))))
3599 p += strlen (modify_target[j].str);
3600 else if (modify_target[j].add_del == ADD
3601 && ! made_addition && *p == '-')
3603 for (r = modify_target[j].str; *r != 0; )
3611 spec_machine = new_name;
3614 if (is_modify_target_name)
3620 if (SWITCH_TAKES_ARG (c) > (p[1] != 0))
3621 i += SWITCH_TAKES_ARG (c) - (p[1] != 0);
3622 else if (WORD_SWITCH_TAKES_ARG (p))
3623 i += WORD_SWITCH_TAKES_ARG (p);
3633 if (have_c && have_o && lang_n_infiles > 1)
3634 fatal ("cannot specify -o with -c or -S and multiple compilations");
3636 /* Set up the search paths before we go looking for config files. */
3638 /* These come before the md prefixes so that we will find gcc's subcommands
3639 (such as cpp) rather than those of the host system. */
3640 /* Use 2 as fourth arg meaning try just the machine as a suffix,
3641 as well as trying the machine and the version. */
3643 add_prefix (&exec_prefixes, standard_exec_prefix, "GCC",
3644 PREFIX_PRIORITY_LAST, 1, warn_std_ptr, 0);
3645 add_prefix (&exec_prefixes, standard_exec_prefix, "BINUTILS",
3646 PREFIX_PRIORITY_LAST, 2, warn_std_ptr, 0);
3647 add_prefix (&exec_prefixes, standard_exec_prefix_1, "BINUTILS",
3648 PREFIX_PRIORITY_LAST, 2, warn_std_ptr, 0);
3651 add_prefix (&startfile_prefixes, standard_exec_prefix, "BINUTILS",
3652 PREFIX_PRIORITY_LAST, 1, warn_std_ptr, 0);
3653 add_prefix (&startfile_prefixes, standard_exec_prefix_1, "BINUTILS",
3654 PREFIX_PRIORITY_LAST, 1, warn_std_ptr, 0);
3656 tooldir_prefix = concat (tooldir_base_prefix, spec_machine,
3657 dir_separator_str, NULL);
3659 /* If tooldir is relative, base it on exec_prefixes. A relative
3660 tooldir lets us move the installed tree as a unit.
3662 If GCC_EXEC_PREFIX is defined, then we want to add two relative
3663 directories, so that we can search both the user specified directory
3664 and the standard place. */
3666 if (!IS_ABSOLUTE_PATHNAME (tooldir_prefix))
3668 if (gcc_exec_prefix)
3670 char *gcc_exec_tooldir_prefix
3671 = concat (gcc_exec_prefix, spec_machine, dir_separator_str,
3672 spec_version, dir_separator_str, tooldir_prefix, NULL);
3674 add_prefix (&exec_prefixes,
3675 concat (gcc_exec_tooldir_prefix, "bin",
3676 dir_separator_str, NULL),
3677 NULL, PREFIX_PRIORITY_LAST, 0, NULL, 0);
3678 add_prefix (&startfile_prefixes,
3679 concat (gcc_exec_tooldir_prefix, "lib",
3680 dir_separator_str, NULL),
3681 NULL, PREFIX_PRIORITY_LAST, 0, NULL, 1);
3684 tooldir_prefix = concat (standard_exec_prefix, spec_machine,
3685 dir_separator_str, spec_version,
3686 dir_separator_str, tooldir_prefix, NULL);
3689 add_prefix (&exec_prefixes,
3690 concat (tooldir_prefix, "bin", dir_separator_str, NULL),
3691 "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL, 0);
3692 add_prefix (&startfile_prefixes,
3693 concat (tooldir_prefix, "lib", dir_separator_str, NULL),
3694 "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL, 1);
3696 /* More prefixes are enabled in main, after we read the specs file
3697 and determine whether this is cross-compilation or not. */
3699 /* Then create the space for the vectors and scan again. */
3701 switches = ((struct switchstr *)
3702 xmalloc ((n_switches + 1) * sizeof (struct switchstr)));
3703 infiles = (struct infile *) xmalloc ((n_infiles + 1) * sizeof (struct infile));
3706 last_language_n_infiles = -1;
3708 /* This, time, copy the text of each switch and store a pointer
3709 to the copy in the vector of switches.
3710 Store all the infiles in their vector. */
3712 for (i = 1; i < argc; i++)
3714 /* Just skip the switches that were handled by the preceding loop. */
3715 #ifdef MODIFY_TARGET_NAME
3716 is_modify_target_name = 0;
3718 for (j = 0; j < ARRAY_SIZE (modify_target); j++)
3719 if (! strcmp (argv[i], modify_target[j].sw))
3720 is_modify_target_name = 1;
3722 if (is_modify_target_name)
3726 if (! strncmp (argv[i], "-Wa,", 4))
3728 else if (! strncmp (argv[i], "-Wp,", 4))
3730 else if (! strcmp (argv[i], "-pass-exit-codes"))
3732 else if (! strcmp (argv[i], "-print-search-dirs"))
3734 else if (! strcmp (argv[i], "-print-libgcc-file-name"))
3736 else if (! strncmp (argv[i], "-print-file-name=", 17))
3738 else if (! strncmp (argv[i], "-print-prog-name=", 17))
3740 else if (! strcmp (argv[i], "-print-multi-lib"))
3742 else if (! strcmp (argv[i], "-print-multi-directory"))
3744 else if (! strcmp (argv[i], "-print-multi-os-directory"))
3746 else if (! strcmp (argv[i], "-ftarget-help"))
3748 else if (! strcmp (argv[i], "-fhelp"))
3750 else if (argv[i][0] == '+' && argv[i][1] == 'e')
3752 /* Compensate for the +e options to the C++ front-end;
3753 they're there simply for cfront call-compatibility. We do
3754 some magic in default_compilers to pass them down properly.
3755 Note we deliberately start at the `+' here, to avoid passing
3756 -e0 or -e1 down into the linker. */
3757 switches[n_switches].part1 = &argv[i][0];
3758 switches[n_switches].args = 0;
3759 switches[n_switches].live_cond = SWITCH_OK;
3760 switches[n_switches].validated = 0;
3763 else if (strncmp (argv[i], "-Wl,", 4) == 0)
3766 /* Split the argument at commas. */
3768 for (j = 4; argv[i][j]; j++)
3769 if (argv[i][j] == ',')
3771 infiles[n_infiles].language = "*";
3772 infiles[n_infiles++].name
3773 = save_string (argv[i] + prev, j - prev);
3776 /* Record the part after the last comma. */
3777 infiles[n_infiles].language = "*";
3778 infiles[n_infiles++].name = argv[i] + prev;
3780 else if (strcmp (argv[i], "-Xlinker") == 0)
3782 infiles[n_infiles].language = "*";
3783 infiles[n_infiles++].name = argv[++i];
3785 else if (strcmp (argv[i], "-l") == 0)
3786 { /* POSIX allows separation of -l and the lib arg;
3787 canonicalize by concatenating -l with its arg */
3788 infiles[n_infiles].language = "*";
3789 infiles[n_infiles++].name = concat ("-l", argv[++i], NULL);
3791 else if (strncmp (argv[i], "-l", 2) == 0)
3793 infiles[n_infiles].language = "*";
3794 infiles[n_infiles++].name = argv[i];
3796 else if (strcmp (argv[i], "-specs") == 0)
3798 else if (strncmp (argv[i], "-specs=", 7) == 0)
3800 else if (strcmp (argv[i], "-time") == 0)
3802 else if ((save_temps_flag || report_times)
3803 && strcmp (argv[i], "-pipe") == 0)
3805 /* -save-temps overrides -pipe, so that temp files are produced */
3806 if (save_temps_flag)
3807 error ("warning: -pipe ignored because -save-temps specified");
3808 /* -time overrides -pipe because we can't get correct stats when
3809 multiple children are running at once. */
3810 else if (report_times)
3811 error ("warning: -pipe ignored because -time specified");
3813 else if (strcmp (argv[i], "-###") == 0)
3815 else if (argv[i][0] == '-' && argv[i][1] != 0)
3817 const char *p = &argv[i][1];
3822 if (p[1] == 0 && i + 1 == argc)
3823 fatal ("argument to `-x' is missing");
3825 spec_lang = argv[++i];
3828 if (! strcmp (spec_lang, "none"))
3829 /* Suppress the warning if -xnone comes after the last input
3830 file, because alternate command interfaces like g++ might
3831 find it useful to place -xnone after each input file. */
3834 last_language_n_infiles = n_infiles;
3837 switches[n_switches].part1 = p;
3838 /* Deal with option arguments in separate argv elements. */
3839 if ((SWITCH_TAKES_ARG (c) > (p[1] != 0))
3840 || WORD_SWITCH_TAKES_ARG (p))
3843 int n_args = WORD_SWITCH_TAKES_ARG (p);
3847 /* Count only the option arguments in separate argv elements. */
3848 n_args = SWITCH_TAKES_ARG (c) - (p[1] != 0);
3850 if (i + n_args >= argc)
3851 fatal ("argument to `-%s' is missing", p);
3852 switches[n_switches].args
3853 = (const char **) xmalloc ((n_args + 1) * sizeof(const char *));
3855 switches[n_switches].args[j++] = argv[++i];
3856 /* Null-terminate the vector. */
3857 switches[n_switches].args[j] = 0;
3859 else if (strchr (switches_need_spaces, c))
3861 /* On some systems, ld cannot handle some options without
3862 a space. So split the option from its argument. */
3863 char *part1 = (char *) xmalloc (2);
3867 switches[n_switches].part1 = part1;
3868 switches[n_switches].args
3869 = (const char **) xmalloc (2 * sizeof (const char *));
3870 switches[n_switches].args[0] = xstrdup (p+1);
3871 switches[n_switches].args[1] = 0;
3874 switches[n_switches].args = 0;
3876 switches[n_switches].live_cond = SWITCH_OK;
3877 switches[n_switches].validated = 0;
3878 switches[n_switches].ordering = 0;
3879 /* These are always valid, since gcc.c itself understands it. */
3880 if (!strcmp (p, "save-temps")
3881 || !strcmp (p, "static-libgcc")
3882 || !strcmp (p, "shared-libgcc"))
3883 switches[n_switches].validated = 1;
3886 char ch = switches[n_switches].part1[0];
3888 switches[n_switches].validated = 1;
3894 #ifdef HAVE_TARGET_OBJECT_SUFFIX
3895 argv[i] = convert_filename (argv[i], 0, access (argv[i], F_OK));
3898 if (strcmp (argv[i], "-") != 0 && access (argv[i], F_OK) < 0)
3900 perror_with_name (argv[i]);
3905 infiles[n_infiles].language = spec_lang;
3906 infiles[n_infiles++].name = argv[i];
3911 if (n_infiles == last_language_n_infiles && spec_lang != 0)
3912 error ("warning: `-x %s' after last input file has no effect", spec_lang);
3914 /* Ensure we only invoke each subprocess once. */
3915 if (target_help_flag || print_help_list)
3919 /* Create a dummy input file, so that we can pass --target-help on to
3920 the various sub-processes. */
3921 infiles[0].language = "c";
3922 infiles[0].name = "help-dummy";
3924 if (target_help_flag)
3926 switches[n_switches].part1 = "--target-help";
3927 switches[n_switches].args = 0;
3928 switches[n_switches].live_cond = SWITCH_OK;
3929 switches[n_switches].validated = 0;
3934 if (print_help_list)
3936 switches[n_switches].part1 = "--help";
3937 switches[n_switches].args = 0;
3938 switches[n_switches].live_cond = SWITCH_OK;
3939 switches[n_switches].validated = 0;
3945 switches[n_switches].part1 = 0;
3946 infiles[n_infiles].name = 0;
3949 /* Store switches not filtered out by %{<S} in spec in COLLECT_GCC_OPTIONS
3950 and place that in the environment. */
3953 set_collect_gcc_options ()
3958 /* Build COLLECT_GCC_OPTIONS to have all of the options specified to
3960 obstack_grow (&collect_obstack, "COLLECT_GCC_OPTIONS=",
3961 sizeof ("COLLECT_GCC_OPTIONS=") - 1);
3964 for (i = 0; (int) i < n_switches; i++)
3966 const char *const *args;
3969 obstack_grow (&collect_obstack, " ", 1);
3973 /* Ignore elided switches. */
3974 if (switches[i].live_cond == SWITCH_IGNORE)
3977 obstack_grow (&collect_obstack, "'-", 2);
3978 q = switches[i].part1;
3979 while ((p = strchr (q, '\'')))
3981 obstack_grow (&collect_obstack, q, p - q);
3982 obstack_grow (&collect_obstack, "'\\''", 4);
3985 obstack_grow (&collect_obstack, q, strlen (q));
3986 obstack_grow (&collect_obstack, "'", 1);
3988 for (args = switches[i].args; args && *args; args++)
3990 obstack_grow (&collect_obstack, " '", 2);
3992 while ((p = strchr (q, '\'')))
3994 obstack_grow (&collect_obstack, q, p - q);
3995 obstack_grow (&collect_obstack, "'\\''", 4);
3998 obstack_grow (&collect_obstack, q, strlen (q));
3999 obstack_grow (&collect_obstack, "'", 1);
4002 obstack_grow (&collect_obstack, "\0", 1);
4003 putenv (obstack_finish (&collect_obstack));
4006 /* Process a spec string, accumulating and running commands. */
4008 /* These variables describe the input file name.
4009 input_file_number is the index on outfiles of this file,
4010 so that the output file name can be stored for later use by %o.
4011 input_basename is the start of the part of the input file
4012 sans all directory names, and basename_length is the number
4013 of characters starting there excluding the suffix .c or whatever. */
4015 const char *input_filename;
4016 static int input_file_number;
4017 size_t input_filename_length;
4018 static int basename_length;
4019 static int suffixed_basename_length;
4020 static const char *input_basename;
4021 static const char *input_suffix;
4022 static struct stat input_stat;
4023 static int input_stat_set;
4025 /* The compiler used to process the current input file. */
4026 static struct compiler *input_file_compiler;
4028 /* These are variables used within do_spec and do_spec_1. */
4030 /* Nonzero if an arg has been started and not yet terminated
4031 (with space, tab or newline). */
4032 static int arg_going;
4034 /* Nonzero means %d or %g has been seen; the next arg to be terminated
4035 is a temporary file name. */
4036 static int delete_this_arg;
4038 /* Nonzero means %w has been seen; the next arg to be terminated
4039 is the output file name of this compilation. */
4040 static int this_is_output_file;
4042 /* Nonzero means %s has been seen; the next arg to be terminated
4043 is the name of a library file and we should try the standard
4044 search dirs for it. */
4045 static int this_is_library_file;
4047 /* Nonzero means that the input of this command is coming from a pipe. */
4048 static int input_from_pipe;
4050 /* Nonnull means substitute this for any suffix when outputting a switches
4052 static const char *suffix_subst;
4054 /* Process the spec SPEC and run the commands specified therein.
4055 Returns 0 if the spec is successfully processed; -1 if failed. */
4063 value = do_spec_2 (spec);
4065 /* Force out any unfinished command.
4066 If -pipe, this forces out the last command if it ended in `|'. */
4069 if (argbuf_index > 0 && !strcmp (argbuf[argbuf_index - 1], "|"))
4072 set_collect_gcc_options ();
4074 if (argbuf_index > 0)
4087 delete_this_arg = 0;
4088 this_is_output_file = 0;
4089 this_is_library_file = 0;
4090 input_from_pipe = 0;
4091 suffix_subst = NULL;
4093 return do_spec_1 (spec, 0, NULL);
4097 /* Process the given spec string and add any new options to the end
4098 of the switches/n_switches array. */
4105 do_spec_1 (" ", 0, NULL);
4107 if (argbuf_index > 0)
4112 n_switches += argbuf_index;
4113 switches = xrealloc (switches,
4114 sizeof (struct switchstr) * (n_switches + 1));
4116 switches[n_switches] = switches[first];
4117 for (i = 0; i < argbuf_index; i++)
4119 struct switchstr *sw;
4121 /* Each switch should start with '-'. */
4122 if (argbuf[i][0] != '-')
4125 sw = &switches[i + first];
4126 sw->part1 = &argbuf[i][1];
4128 sw->live_cond = SWITCH_OK;
4135 /* Process the sub-spec SPEC as a portion of a larger spec.
4136 This is like processing a whole spec except that we do
4137 not initialize at the beginning and we do not supply a
4138 newline by default at the end.
4139 INSWITCH nonzero means don't process %-sequences in SPEC;
4140 in this case, % is treated as an ordinary character.
4141 This is used while substituting switches.
4142 INSWITCH nonzero also causes SPC not to terminate an argument.
4144 Value is zero unless a line was finished
4145 and the command on that line reported an error. */
4148 do_spec_1 (spec, inswitch, soft_matched_part)
4151 const char *soft_matched_part;
4153 const char *p = spec;
4160 /* If substituting a switch, treat all chars like letters.
4161 Otherwise, NL, SPC, TAB and % are special. */
4162 switch (inswitch ? 'a' : c)
4165 /* End of line: finish any pending argument,
4166 then run the pending command if one has been started. */
4169 obstack_1grow (&obstack, 0);
4170 string = obstack_finish (&obstack);
4171 if (this_is_library_file)
4172 string = find_file (string);
4173 store_arg (string, delete_this_arg, this_is_output_file);
4174 if (this_is_output_file)
4175 outfiles[input_file_number] = string;
4179 if (argbuf_index > 0 && !strcmp (argbuf[argbuf_index - 1], "|"))
4181 for (i = 0; i < n_switches; i++)
4182 if (!strcmp (switches[i].part1, "pipe"))
4185 /* A `|' before the newline means use a pipe here,
4186 but only if -pipe was specified.
4187 Otherwise, execute now and don't pass the `|' as an arg. */
4190 input_from_pipe = 1;
4191 switches[i].validated = 1;
4198 set_collect_gcc_options ();
4200 if (argbuf_index > 0)
4206 /* Reinitialize for a new command, and for a new argument. */
4209 delete_this_arg = 0;
4210 this_is_output_file = 0;
4211 this_is_library_file = 0;
4212 input_from_pipe = 0;
4216 /* End any pending argument. */
4219 obstack_1grow (&obstack, 0);
4220 string = obstack_finish (&obstack);
4221 if (this_is_library_file)
4222 string = find_file (string);
4223 store_arg (string, delete_this_arg, this_is_output_file);
4224 if (this_is_output_file)
4225 outfiles[input_file_number] = string;
4229 obstack_1grow (&obstack, c);
4235 /* Space or tab ends an argument if one is pending. */
4238 obstack_1grow (&obstack, 0);
4239 string = obstack_finish (&obstack);
4240 if (this_is_library_file)
4241 string = find_file (string);
4242 store_arg (string, delete_this_arg, this_is_output_file);
4243 if (this_is_output_file)
4244 outfiles[input_file_number] = string;
4246 /* Reinitialize for a new argument. */
4248 delete_this_arg = 0;
4249 this_is_output_file = 0;
4250 this_is_library_file = 0;
4257 fatal ("invalid specification! Bug in cc");
4260 obstack_grow (&obstack, input_basename, basename_length);
4265 obstack_grow (&obstack, input_basename, suffixed_basename_length);
4270 delete_this_arg = 2;
4273 /* Dump out the directories specified with LIBRARY_PATH,
4274 followed by the absolute directories
4275 that we search for startfiles. */
4278 struct prefix_list *pl = startfile_prefixes.plist;
4279 size_t bufsize = 100;
4280 char *buffer = (char *) xmalloc (bufsize);
4283 for (; pl; pl = pl->next)
4285 #ifdef RELATIVE_PREFIX_NOT_LINKDIR
4286 /* Used on systems which record the specified -L dirs
4287 and use them to search for dynamic linking. */
4288 /* Relative directories always come from -B,
4289 and it is better not to use them for searching
4290 at run time. In particular, stage1 loses. */
4291 if (!IS_ABSOLUTE_PATHNAME (pl->prefix))
4294 /* Try subdirectory if there is one. */
4295 if (multilib_dir != NULL
4296 || (pl->os_multilib && multilib_os_dir != NULL))
4298 const char *multi_dir;
4300 multi_dir = pl->os_multilib ? multilib_os_dir
4302 if (machine_suffix && multilib_dir)
4304 if (strlen (pl->prefix) + strlen (machine_suffix)
4306 bufsize = (strlen (pl->prefix)
4307 + strlen (machine_suffix)) * 2 + 1;
4308 buffer = (char *) xrealloc (buffer, bufsize);
4309 strcpy (buffer, pl->prefix);
4310 strcat (buffer, machine_suffix);
4311 if (is_directory (buffer, multilib_dir, 1))
4313 do_spec_1 ("-L", 0, NULL);
4314 #ifdef SPACE_AFTER_L_OPTION
4315 do_spec_1 (" ", 0, NULL);
4317 do_spec_1 (buffer, 1, NULL);
4318 do_spec_1 (multilib_dir, 1, NULL);
4319 /* Make this a separate argument. */
4320 do_spec_1 (" ", 0, NULL);
4323 if (!pl->require_machine_suffix)
4325 if (is_directory (pl->prefix, multi_dir, 1))
4327 do_spec_1 ("-L", 0, NULL);
4328 #ifdef SPACE_AFTER_L_OPTION
4329 do_spec_1 (" ", 0, NULL);
4331 do_spec_1 (pl->prefix, 1, NULL);
4332 do_spec_1 (multi_dir, 1, NULL);
4333 /* Make this a separate argument. */
4334 do_spec_1 (" ", 0, NULL);
4340 if (is_directory (pl->prefix, machine_suffix, 1))
4342 do_spec_1 ("-L", 0, NULL);
4343 #ifdef SPACE_AFTER_L_OPTION
4344 do_spec_1 (" ", 0, NULL);
4346 do_spec_1 (pl->prefix, 1, NULL);
4347 /* Remove slash from machine_suffix. */
4348 if (strlen (machine_suffix) >= bufsize)
4349 bufsize = strlen (machine_suffix) * 2 + 1;
4350 buffer = (char *) xrealloc (buffer, bufsize);
4351 strcpy (buffer, machine_suffix);
4352 idx = strlen (buffer);
4353 if (IS_DIR_SEPARATOR (buffer[idx - 1]))
4354 buffer[idx - 1] = 0;
4355 do_spec_1 (buffer, 1, NULL);
4356 /* Make this a separate argument. */
4357 do_spec_1 (" ", 0, NULL);
4360 if (!pl->require_machine_suffix)
4362 if (is_directory (pl->prefix, "", 1))
4364 do_spec_1 ("-L", 0, NULL);
4365 #ifdef SPACE_AFTER_L_OPTION
4366 do_spec_1 (" ", 0, NULL);
4368 /* Remove slash from pl->prefix. */
4369 if (strlen (pl->prefix) >= bufsize)
4370 bufsize = strlen (pl->prefix) * 2 + 1;
4371 buffer = (char *) xrealloc (buffer, bufsize);
4372 strcpy (buffer, pl->prefix);
4373 idx = strlen (buffer);
4374 if (IS_DIR_SEPARATOR (buffer[idx - 1]))
4375 buffer[idx - 1] = 0;
4376 do_spec_1 (buffer, 1, NULL);
4377 /* Make this a separate argument. */
4378 do_spec_1 (" ", 0, NULL);
4387 /* %efoo means report an error with `foo' as error message
4388 and don't execute any more commands for this file. */
4392 while (*p != 0 && *p != '\n')
4394 buf = (char *) alloca (p - q + 1);
4395 strncpy (buf, q, p - q);
4402 /* %nfoo means report an notice with `foo' on stderr. */
4406 while (*p != 0 && *p != '\n')
4408 buf = (char *) alloca (p - q + 1);
4409 strncpy (buf, q, p - q);
4411 notice ("%s\n", buf);
4421 /* If save_temps_flag is off, and the HOST_BIT_BUCKET is defined,
4422 and it is not a directory, and it is writable, use it.
4423 Otherwise, fall through and treat this like any other
4426 if ((!save_temps_flag)
4427 && (stat (HOST_BIT_BUCKET, &st) == 0) && (!S_ISDIR (st.st_mode))
4428 && (access (HOST_BIT_BUCKET, W_OK) == 0))
4430 obstack_grow (&obstack, HOST_BIT_BUCKET,
4431 strlen (HOST_BIT_BUCKET));
4432 delete_this_arg = 0;
4441 struct temp_name *t;
4443 const char *suffix = p;
4444 char *saved_suffix = NULL;
4446 while (*p == '.' || ISALPHA ((unsigned char) *p))
4448 suffix_length = p - suffix;
4449 if (p[0] == '%' && p[1] == 'O')
4452 /* We don't support extra suffix characters after %O. */
4453 if (*p == '.' || ISALPHA ((unsigned char) *p))
4455 if (suffix_length == 0)
4456 suffix = TARGET_OBJECT_SUFFIX;
4460 = (char *) xmalloc (suffix_length
4461 + strlen (TARGET_OBJECT_SUFFIX));
4462 strncpy (saved_suffix, suffix, suffix_length);
4463 strcpy (saved_suffix + suffix_length,
4464 TARGET_OBJECT_SUFFIX);
4466 suffix_length += strlen (TARGET_OBJECT_SUFFIX);
4469 /* If the input_filename has the same suffix specified
4470 for the %g, %u, or %U, and -save-temps is specified,
4471 we could end up using that file as an intermediate
4472 thus clobbering the user's source file (.e.g.,
4473 gcc -save-temps foo.s would clobber foo.s with the
4474 output of cpp0). So check for this condition and
4475 generate a temp file as the intermediate. */
4477 if (save_temps_flag)
4479 temp_filename_length = basename_length + suffix_length;
4480 temp_filename = alloca (temp_filename_length + 1);
4481 strncpy ((char *) temp_filename, input_basename, basename_length);
4482 strncpy ((char *) temp_filename + basename_length, suffix,
4484 *((char *) temp_filename + temp_filename_length) = '\0';
4485 if (strcmp (temp_filename, input_filename) != 0)
4487 struct stat st_temp;
4489 /* Note, set_input() resets input_stat_set to 0. */
4490 if (input_stat_set == 0)
4492 input_stat_set = stat (input_filename, &input_stat);
4493 if (input_stat_set >= 0)
4497 /* If we have the stat for the input_filename
4498 and we can do the stat for the temp_filename
4499 then the they could still refer to the same
4500 file if st_dev/st_ino's are the same. */
4502 if (input_stat_set != 1
4503 || stat (temp_filename, &st_temp) < 0
4504 || input_stat.st_dev != st_temp.st_dev
4505 || input_stat.st_ino != st_temp.st_ino)
4507 temp_filename = save_string (temp_filename,
4508 temp_filename_length + 1);
4509 obstack_grow (&obstack, temp_filename,
4510 temp_filename_length);
4512 delete_this_arg = 0;
4518 /* See if we already have an association of %g/%u/%U and
4520 for (t = temp_names; t; t = t->next)
4521 if (t->length == suffix_length
4522 && strncmp (t->suffix, suffix, suffix_length) == 0
4523 && t->unique == (c != 'g'))
4526 /* Make a new association if needed. %u and %j
4528 if (t == 0 || c == 'u' || c == 'j')
4532 t = (struct temp_name *) xmalloc (sizeof (struct temp_name));
4533 t->next = temp_names;
4536 t->length = suffix_length;
4539 t->suffix = saved_suffix;
4540 saved_suffix = NULL;
4543 t->suffix = save_string (suffix, suffix_length);
4544 t->unique = (c != 'g');
4545 temp_filename = make_temp_file (t->suffix);
4546 temp_filename_length = strlen (temp_filename);
4547 t->filename = temp_filename;
4548 t->filename_length = temp_filename_length;
4552 free (saved_suffix);
4554 obstack_grow (&obstack, t->filename, t->filename_length);
4555 delete_this_arg = 1;
4561 obstack_grow (&obstack, input_filename, input_filename_length);
4567 struct prefix_list *pl = include_prefixes.plist;
4569 if (gcc_exec_prefix)
4571 do_spec_1 ("-iprefix", 1, NULL);
4572 /* Make this a separate argument. */
4573 do_spec_1 (" ", 0, NULL);
4574 do_spec_1 (gcc_exec_prefix, 1, NULL);
4575 do_spec_1 (" ", 0, NULL);
4578 for (; pl; pl = pl->next)
4580 do_spec_1 ("-isystem", 1, NULL);
4581 /* Make this a separate argument. */
4582 do_spec_1 (" ", 0, NULL);
4583 do_spec_1 (pl->prefix, 1, NULL);
4584 do_spec_1 (" ", 0, NULL);
4591 int max = n_infiles;
4592 max += lang_specific_extra_outfiles;
4594 for (i = 0; i < max; i++)
4596 store_arg (outfiles[i], 0, 0);
4601 obstack_grow (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX));
4606 this_is_library_file = 1;
4610 this_is_output_file = 1;
4615 int cur_index = argbuf_index;
4616 /* Handle the {...} following the %W. */
4619 p = handle_braces (p + 1);
4622 /* If any args were output, mark the last one for deletion
4624 if (argbuf_index != cur_index)
4625 record_temp_file (argbuf[argbuf_index - 1], 0, 1);
4629 /* %x{OPTION} records OPTION for %X to output. */
4635 /* Skip past the option value and make a copy. */
4640 string = save_string (p1 + 1, p - p1 - 2);
4642 /* See if we already recorded this option. */
4643 for (i = 0; i < n_linker_options; i++)
4644 if (! strcmp (string, linker_options[i]))
4650 /* This option is new; add it. */
4651 add_linker_option (string, strlen (string));
4655 /* Dump out the options accumulated previously using %x. */
4657 for (i = 0; i < n_linker_options; i++)
4659 do_spec_1 (linker_options[i], 1, NULL);
4660 /* Make each accumulated option a separate argument. */
4661 do_spec_1 (" ", 0, NULL);
4665 /* Dump out the options accumulated previously using -Wa,. */
4667 for (i = 0; i < n_assembler_options; i++)
4669 do_spec_1 (assembler_options[i], 1, NULL);
4670 /* Make each accumulated option a separate argument. */
4671 do_spec_1 (" ", 0, NULL);
4675 /* Dump out the options accumulated previously using -Wp,. */
4677 for (i = 0; i < n_preprocessor_options; i++)
4679 do_spec_1 (preprocessor_options[i], 1, NULL);
4680 /* Make each accumulated option a separate argument. */
4681 do_spec_1 (" ", 0, NULL);
4685 /* Here are digits and numbers that just process
4686 a certain constant string as a spec. */
4689 value = do_spec_1 (cc1_spec, 0, NULL);
4695 value = do_spec_1 (cc1plus_spec, 0, NULL);
4701 value = do_spec_1 (asm_spec, 0, NULL);
4707 value = do_spec_1 (asm_final_spec, 0, NULL);
4714 const char *const spec
4715 = (input_file_compiler->cpp_spec
4716 ? input_file_compiler->cpp_spec
4718 value = do_spec_1 (spec, 0, NULL);
4725 value = do_spec_1 (endfile_spec, 0, NULL);
4731 value = do_spec_1 (link_spec, 0, NULL);
4737 value = do_spec_1 (lib_spec, 0, NULL);
4743 value = do_spec_1 (libgcc_spec, 0, NULL);
4749 if (multilib_dir && strcmp (multilib_dir, ".") != 0)
4755 len = strlen (multilib_dir);
4756 obstack_blank (&obstack, len + 1);
4757 p = obstack_next_free (&obstack) - (len + 1);
4760 for (q = multilib_dir; *q ; ++q, ++p)
4761 *p = (IS_DIR_SEPARATOR (*q) ? '_' : *q);
4767 char *x = (char *) alloca (strlen (cpp_predefines) + 1);
4771 /* Copy all of the -D options in CPP_PREDEFINES into BUF. */
4775 if (! strncmp (y, "-D", 2))
4776 /* Copy the whole option. */
4777 while (*y && *y != ' ' && *y != '\t')
4779 else if (*y == ' ' || *y == '\t')
4780 /* Copy whitespace to the result. */
4782 /* Don't copy other options. */
4789 value = do_spec_1 (buf, 0, NULL);
4797 char *x = (char *) alloca (strlen (cpp_predefines) * 4 + 1);
4801 /* Copy all of CPP_PREDEFINES into BUF,
4802 but force them all into the reserved name space if they
4803 aren't already there. The reserved name space is all
4804 identifiers beginning with two underscores or with one
4805 underscore and a capital letter. We do the forcing by
4806 adding up to two underscores to the beginning and end
4807 of each symbol. e.g. mips, _mips, mips_, and _mips_ all
4812 if (! strncmp (y, "-D", 2))
4821 && ! ISUPPER ((unsigned char) *(y + 1))))
4823 /* Stick __ at front of macro name. */
4827 /* Arrange to stick __ at the end as well. */
4831 /* Copy the macro name. */
4832 while (*y && *y != '=' && *y != ' ' && *y != '\t')
4845 /* Copy the value given, if any. */
4846 while (*y && *y != ' ' && *y != '\t')
4849 else if (*y == ' ' || *y == '\t')
4850 /* Copy whitespace to the result. */
4852 /* Don't copy -A options */
4858 /* Copy all of CPP_PREDEFINES into BUF,
4859 but put __ after every -D. */
4863 if (! strncmp (y, "-D", 2))
4869 && ! ISUPPER ((unsigned char) *(y + 1))))
4871 /* Stick -D__ at front of macro name. */
4878 /* Copy the macro name. */
4879 while (*y && *y != '=' && *y != ' ' && *y != '\t')
4882 /* Copy the value given, if any. */
4883 while (*y && *y != ' ' && *y != '\t')
4888 /* Do not copy this macro - we have just done it before */
4889 while (*y && *y != ' ' && *y != '\t')
4893 else if (*y == ' ' || *y == '\t')
4894 /* Copy whitespace to the result. */
4896 /* Don't copy -A options. */
4902 /* Copy all of the -A options in CPP_PREDEFINES into BUF. */
4906 if (! strncmp (y, "-A", 2))
4907 /* Copy the whole option. */
4908 while (*y && *y != ' ' && *y != '\t')
4910 else if (*y == ' ' || *y == '\t')
4911 /* Copy whitespace to the result. */
4913 /* Don't copy other options. */
4920 value = do_spec_1 (buf, 0, NULL);
4927 value = do_spec_1 (startfile_spec, 0, NULL);
4932 /* Here we define characters other than letters and digits. */
4935 p = handle_braces (p);
4941 p = handle_spec_function (p);
4947 obstack_1grow (&obstack, '%');
4954 while (p[len] && p[len] != ' ' && p[len] != '%')
4956 suffix_subst = save_string (p - 1, len + 1);
4962 if (soft_matched_part)
4964 do_spec_1 (soft_matched_part, 1, NULL);
4965 do_spec_1 (" ", 0, NULL);
4968 /* Catch the case where a spec string contains something like
4969 '%{foo:%*}'. ie there is no * in the pattern on the left
4970 hand side of the :. */
4971 error ("spec failure: '%%*' has not been initialized by pattern match");
4974 /* Process a string found as the value of a spec given by name.
4975 This feature allows individual machine descriptions
4976 to add and use their own specs.
4977 %[...] modifies -D options the way %P does;
4978 %(...) uses the spec unmodified. */
4980 error ("warning: use of obsolete %%[ operator in specs");
4983 const char *name = p;
4984 struct spec_list *sl;
4987 /* The string after the S/P is the name of a spec that is to be
4989 while (*p && *p != ')' && *p != ']')
4992 /* See if it's in the list. */
4993 for (len = p - name, sl = specs; sl; sl = sl->next)
4994 if (sl->name_len == len && !strncmp (sl->name, name, len))
4996 name = *(sl->ptr_spec);
4998 notice ("Processing spec %c%s%c, which is '%s'\n",
4999 c, sl->name, (c == '(') ? ')' : ']', name);
5008 value = do_spec_1 (name, 0, NULL);
5014 char *x = (char *) alloca (strlen (name) * 2 + 1);
5016 const char *y = name;
5019 /* Copy all of NAME into BUF, but put __ after
5020 every -D and at the end of each arg. */
5023 if (! strncmp (y, "-D", 2))
5034 && (*y == ' ' || *y == '\t' || *y == '='
5035 || *y == '}' || *y == 0))
5048 value = do_spec_1 (buf, 0, NULL);
5054 /* Discard the closing paren or bracket. */
5062 int c1 = *p++; /* Select first or second version number. */
5063 const char *v = compiler_version;
5065 static const char zeroc = '0';
5067 /* The format of the version string is
5068 ([^0-9]*-)?[0-9]+[.][0-9]+([.][0-9]+)?([- ].*)? */
5070 /* Ignore leading non-digits. i.e. "foo-" in "foo-2.7.2". */
5071 while (! ISDIGIT (*v))
5073 if (v > compiler_version && v[-1] != '-')
5076 /* If desired, advance to second version number. */
5079 /* Set V after the first period. */
5080 while (ISDIGIT (*v))
5087 /* If desired, advance to third version number.
5088 But don't complain if it's not present */
5091 /* Set V after the second period. */
5092 while (ISDIGIT (*v))
5094 if ((*v != 0) && (*v != ' ') && (*v != '.') && (*v != '-'))
5100 /* Set Q at the next period or at the end. */
5102 while (ISDIGIT (*q))
5104 if (*q != 0 && q > v && *q != ' ' && *q != '.' && *q != '-')
5108 /* Put that part into the command. */
5109 obstack_grow (&obstack, v, q - v);
5111 /* Default to "0" */
5112 obstack_grow (&obstack, &zeroc, 1);
5118 if (input_from_pipe)
5119 do_spec_1 ("-", 0, NULL);
5123 error ("spec failure: unrecognized spec option '%c'", c);
5129 /* Backslash: treat next character as ordinary. */
5134 /* Ordinary character: put it into the current argument. */
5135 obstack_1grow (&obstack, c);
5139 /* End of string. If we are processing a spec function, we need to
5140 end any pending argument. */
5141 if (processing_spec_function && arg_going)
5143 obstack_1grow (&obstack, 0);
5144 string = obstack_finish (&obstack);
5145 if (this_is_library_file)
5146 string = find_file (string);
5147 store_arg (string, delete_this_arg, this_is_output_file);
5148 if (this_is_output_file)
5149 outfiles[input_file_number] = string;
5156 /* Look up a spec function. */
5158 static const struct spec_function *
5159 lookup_spec_function (name)
5162 static const struct spec_function * const spec_function_tables[] =
5164 static_spec_functions,
5165 lang_specific_spec_functions,
5167 const struct spec_function *sf;
5170 for (i = 0; i < ARRAY_SIZE (spec_function_tables); i++)
5172 for (sf = spec_function_tables[i]; sf->name != NULL; sf++)
5173 if (strcmp (sf->name, name) == 0)
5180 /* Evaluate a spec function. */
5183 eval_spec_function (func, args)
5184 const char *func, *args;
5186 const struct spec_function *sf;
5187 const char *funcval;
5189 /* Saved spec processing context. */
5190 int save_argbuf_index;
5191 int save_argbuf_length;
5192 const char **save_argbuf;
5195 int save_delete_this_arg;
5196 int save_this_is_output_file;
5197 int save_this_is_library_file;
5198 int save_input_from_pipe;
5199 const char *save_suffix_subst;
5202 sf = lookup_spec_function (func);
5204 fatal ("unknown spec function `%s'", func);
5206 /* Push the spec processing context. */
5207 save_argbuf_index = argbuf_index;
5208 save_argbuf_length = argbuf_length;
5209 save_argbuf = argbuf;
5211 save_arg_going = arg_going;
5212 save_delete_this_arg = delete_this_arg;
5213 save_this_is_output_file = this_is_output_file;
5214 save_this_is_library_file = this_is_library_file;
5215 save_input_from_pipe = input_from_pipe;
5216 save_suffix_subst = suffix_subst;
5218 /* Create a new spec processing context, and build the function
5222 if (do_spec_2 (args) < 0)
5223 fatal ("error in args to spec function `%s'", func);
5225 /* argbuf_index is an index for the next argument to be inserted, and
5226 so contains the count of the args already inserted. */
5228 funcval = (*sf->func) (argbuf_index, argbuf);
5230 /* Pop the spec processing context. */
5231 argbuf_index = save_argbuf_index;
5232 argbuf_length = save_argbuf_length;
5234 argbuf = save_argbuf;
5236 arg_going = save_arg_going;
5237 delete_this_arg = save_delete_this_arg;
5238 this_is_output_file = save_this_is_output_file;
5239 this_is_library_file = save_this_is_library_file;
5240 input_from_pipe = save_input_from_pipe;
5241 suffix_subst = save_suffix_subst;
5246 /* Handle a spec function call of the form:
5250 ARGS is processed as a spec in a separate context and split into an
5251 argument vector in the normal fashion. The function returns a string
5252 containing a spec which we then process in the caller's context, or
5253 NULL if no processing is required. */
5256 handle_spec_function (p)
5260 const char *endp, *funcval;
5263 processing_spec_function++;
5265 /* Get the function name. */
5266 for (endp = p; *endp != '\0'; endp++)
5268 if (*endp == '(') /* ) */
5270 /* Only allow [A-Za-z0-9], -, and _ in function names. */
5271 if (!ISALNUM (*endp) && !(*endp == '-' || *endp == '_'))
5272 fatal ("malformed spec function name");
5274 if (*endp != '(') /* ) */
5275 fatal ("no arguments for spec function");
5276 func = save_string (p, endp - p);
5279 /* Get the arguments. */
5280 for (count = 0; *endp != '\0'; endp++)
5289 else if (*endp == '(') /* ) */
5294 fatal ("malformed spec function arguments");
5295 args = save_string (p, endp - p);
5298 /* p now points to just past the end of the spec function expression. */
5300 funcval = eval_spec_function (func, args);
5301 if (funcval != NULL && do_spec_1 (funcval, 0, NULL) < 0)
5307 processing_spec_function--;
5312 /* Return 0 if we call do_spec_1 and that returns -1. */
5318 const char *filter, *body = NULL, *endbody = NULL;
5320 int true_once = 0; /* If, in %{a|b:d}, at least one of a,b was seen. */
5323 int include_blanks = 1;
5324 int elide_switch = 0;
5329 /* A '^' after the open-brace means to not give blanks before args. */
5336 /* A `|' after the open-brace means,
5337 if the test fails, output a single minus sign rather than nothing.
5338 This is used in %{|!pipe:...}. */
5345 /* A `<' after the open-brace means that the switch should be
5346 removed from the command-line. */
5352 negate = suffix = 0;
5355 /* A `!' after the open-brace negates the condition:
5356 succeed if the specified switch is not present. */
5360 /* A `.' after the open-brace means test against the current suffix. */
5369 if (elide_switch && (negate || pipe_p || suffix))
5371 /* It doesn't make sense to mix elision with other flags. We
5372 could fatal() here, but the standard seems to be to abort. */
5378 while (*p != ':' && *p != '}' && *p != '|' && *p != '&')
5381 if (*p == '|' && (pipe_p || ordered))
5386 if (*p != '}' && *p != '&')
5402 fatal ("mismatched braces in specs");
5408 body = p, endbody = p + 1;
5413 int found = (input_suffix != 0
5414 && (long) strlen (input_suffix) == (long) (p - filter)
5415 && strncmp (input_suffix, filter, p - filter) == 0);
5421 && do_spec_1 (save_string (body, endbody-body-1), 0, NULL) < 0)
5424 else if (p[-1] == '*' && (p[0] == '}' || p[0] == '&'))
5426 /* Substitute all matching switches as separate args. */
5429 for (i = 0; i < n_switches; i++)
5430 if (!strncmp (switches[i].part1, filter, p - 1 - filter)
5431 && check_live_switch (i, p - 1 - filter))
5435 switches[i].live_cond = SWITCH_IGNORE;
5436 switches[i].validated = 1;
5439 ordered = 1, switches[i].ordering = 1;
5444 /* Test for presence of the specified switch. */
5448 /* If name specified ends in *, as in {x*:...},
5449 check for %* and handle that case. */
5450 if (p[-1] == '*' && !negate)
5453 const char *r = body;
5455 /* First see whether we have %*. */
5459 if (*r == '%' && r[1] == '*')
5463 /* If we do, handle that case. */
5466 /* Substitute all matching switches as separate args.
5467 But do this by substituting for %*
5468 in the text that follows the colon. */
5470 unsigned hard_match_len = p - filter - 1;
5471 char *string = save_string (body, endbody - body - 1);
5473 for (i = 0; i < n_switches; i++)
5474 if (!strncmp (switches[i].part1, filter, hard_match_len)
5475 && check_live_switch (i, -1))
5477 do_spec_1 (string, 0, &switches[i].part1[hard_match_len]);
5478 /* Pass any arguments this switch has. */
5479 give_switch (i, 1, 1);
5480 suffix_subst = NULL;
5483 /* We didn't match. Try again. */
5490 /* If name specified ends in *, as in {x*:...},
5491 check for presence of any switch name starting with x. */
5494 for (i = 0; i < n_switches; i++)
5496 unsigned hard_match_len = p - filter - 1;
5498 if (!strncmp (switches[i].part1, filter, hard_match_len)
5499 && check_live_switch (i, hard_match_len))
5506 /* Otherwise, check for presence of exact name specified. */
5509 for (i = 0; i < n_switches; i++)
5511 if (!strncmp (switches[i].part1, filter, p - filter)
5512 && switches[i].part1[p - filter] == 0
5513 && check_live_switch (i, -1))
5521 /* If it is as desired (present for %{s...}, absent for %{!s...})
5522 then substitute either the switch or the specified
5523 conditional text. */
5524 if (present != negate)
5528 switches[i].live_cond = SWITCH_IGNORE;
5529 switches[i].validated = 1;
5531 else if (ordered || *p == '&')
5532 ordered = 1, switches[i].ordering = 1;
5534 give_switch (i, 0, include_blanks);
5536 /* Even if many alternatives are matched, only output once. */
5541 /* Here if a %{|...} conditional fails: output a minus sign,
5542 which means "standard output" or "standard input". */
5543 do_spec_1 ("-", 0, NULL);
5548 /* We didn't match; try again. */
5555 goto next_ampersand;
5561 /* Doing this set of switches later preserves their command-line
5562 ordering. This is needed for e.g. -U, -D and -A. */
5563 for (i = 0; i < n_switches; i++)
5564 if (switches[i].ordering == 1)
5566 switches[i].ordering = 0;
5567 give_switch (i, 0, include_blanks);
5570 /* Process the spec just once, regardless of match count. */
5573 if (do_spec_1 (save_string (body, endbody - body - 1),
5581 /* Return 0 iff switch number SWITCHNUM is obsoleted by a later switch
5582 on the command line. PREFIX_LENGTH is the length of XXX in an {XXX*}
5583 spec, or -1 if either exact match or %* is used.
5585 A -O switch is obsoleted by a later -O switch. A -f, -m, or -W switch
5586 whose value does not begin with "no-" is obsoleted by the same value
5587 with the "no-", similarly for a switch with the "no-" prefix. */
5590 check_live_switch (switchnum, prefix_length)
5594 const char *name = switches[switchnum].part1;
5597 /* In the common case of {<at-most-one-letter>*}, a negating
5598 switch would always match, so ignore that case. We will just
5599 send the conflicting switches to the compiler phase. */
5600 if (prefix_length >= 0 && prefix_length <= 1)
5603 /* If we already processed this switch and determined if it was
5604 live or not, return our past determination. */
5605 if (switches[switchnum].live_cond != 0)
5606 return switches[switchnum].live_cond > 0;
5608 /* Now search for duplicate in a manner that depends on the name. */
5612 for (i = switchnum + 1; i < n_switches; i++)
5613 if (switches[i].part1[0] == 'O')
5615 switches[switchnum].validated = 1;
5616 switches[switchnum].live_cond = SWITCH_FALSE;
5621 case 'W': case 'f': case 'm':
5622 if (! strncmp (name + 1, "no-", 3))
5624 /* We have Xno-YYY, search for XYYY. */
5625 for (i = switchnum + 1; i < n_switches; i++)
5626 if (switches[i].part1[0] == name[0]
5627 && ! strcmp (&switches[i].part1[1], &name[4]))
5629 switches[switchnum].validated = 1;
5630 switches[switchnum].live_cond = SWITCH_FALSE;
5636 /* We have XYYY, search for Xno-YYY. */
5637 for (i = switchnum + 1; i < n_switches; i++)
5638 if (switches[i].part1[0] == name[0]
5639 && switches[i].part1[1] == 'n'
5640 && switches[i].part1[2] == 'o'
5641 && switches[i].part1[3] == '-'
5642 && !strcmp (&switches[i].part1[4], &name[1]))
5644 switches[switchnum].validated = 1;
5645 switches[switchnum].live_cond = SWITCH_FALSE;
5652 /* Otherwise the switch is live. */
5653 switches[switchnum].live_cond = SWITCH_LIVE;
5657 /* Pass a switch to the current accumulating command
5658 in the same form that we received it.
5659 SWITCHNUM identifies the switch; it is an index into
5660 the vector of switches gcc received, which is `switches'.
5661 This cannot fail since it never finishes a command line.
5663 If OMIT_FIRST_WORD is nonzero, then we omit .part1 of the argument.
5665 If INCLUDE_BLANKS is nonzero, then we include blanks before each argument
5669 give_switch (switchnum, omit_first_word, include_blanks)
5671 int omit_first_word;
5674 if (switches[switchnum].live_cond == SWITCH_IGNORE)
5677 if (!omit_first_word)
5679 do_spec_1 ("-", 0, NULL);
5680 do_spec_1 (switches[switchnum].part1, 1, NULL);
5683 if (switches[switchnum].args != 0)
5686 for (p = switches[switchnum].args; *p; p++)
5688 const char *arg = *p;
5691 do_spec_1 (" ", 0, NULL);
5694 unsigned length = strlen (arg);
5697 while (length-- && !IS_DIR_SEPARATOR (arg[length]))
5698 if (arg[length] == '.')
5700 ((char *)arg)[length] = 0;
5704 do_spec_1 (arg, 1, NULL);
5706 ((char *)arg)[length] = '.';
5707 do_spec_1 (suffix_subst, 1, NULL);
5710 do_spec_1 (arg, 1, NULL);
5714 do_spec_1 (" ", 0, NULL);
5715 switches[switchnum].validated = 1;
5718 /* Search for a file named NAME trying various prefixes including the
5719 user's -B prefix and some standard ones.
5720 Return the absolute file name found. If nothing is found, return NAME. */
5728 /* Try multilib_dir if it is defined. */
5729 if (multilib_os_dir != NULL)
5731 newname = find_a_file (&startfile_prefixes, name, R_OK, 1);
5733 /* If we don't find it in the multi library dir, then fall
5734 through and look for it in the normal places. */
5735 if (newname != NULL)
5739 newname = find_a_file (&startfile_prefixes, name, R_OK, 0);
5740 return newname ? newname : name;
5743 /* Determine whether a directory exists. If LINKER, return 0 for
5744 certain fixed names not needed by the linker. If not LINKER, it is
5745 only important to return 0 if the host machine has a small ARG_MAX
5749 is_directory (path1, path2, linker)
5754 int len1 = strlen (path1);
5755 int len2 = strlen (path2);
5756 char *path = (char *) alloca (3 + len1 + len2);
5760 #ifndef SMALL_ARG_MAX
5765 /* Construct the path from the two parts. Ensure the string ends with "/.".
5766 The resulting path will be a directory even if the given path is a
5768 memcpy (path, path1, len1);
5769 memcpy (path + len1, path2, len2);
5770 cp = path + len1 + len2;
5771 if (!IS_DIR_SEPARATOR (cp[-1]))
5772 *cp++ = DIR_SEPARATOR;
5776 /* Exclude directories that the linker is known to search. */
5779 && strcmp (path, concat (dir_separator_str, "lib",
5780 dir_separator_str, ".", NULL)) == 0)
5782 && strcmp (path, concat (dir_separator_str, "usr",
5783 dir_separator_str, "lib",
5784 dir_separator_str, ".", NULL)) == 0)))
5787 return (stat (path, &st) >= 0 && S_ISDIR (st.st_mode));
5790 /* Set up the various global variables to indicate that we're processing
5791 the input file named FILENAME. */
5794 set_input (filename)
5795 const char *filename;
5799 input_filename = filename;
5800 input_filename_length = strlen (input_filename);
5802 input_basename = input_filename;
5803 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
5804 /* Skip drive name so 'x:foo' is handled properly. */
5805 if (input_basename[1] == ':')
5806 input_basename += 2;
5808 for (p = input_basename; *p; p++)
5809 if (IS_DIR_SEPARATOR (*p))
5810 input_basename = p + 1;
5812 /* Find a suffix starting with the last period,
5813 and set basename_length to exclude that suffix. */
5814 basename_length = strlen (input_basename);
5815 suffixed_basename_length = basename_length;
5816 p = input_basename + basename_length;
5817 while (p != input_basename && *p != '.')
5819 if (*p == '.' && p != input_basename)
5821 basename_length = p - input_basename;
5822 input_suffix = p + 1;
5827 /* If a spec for 'g', 'u', or 'U' is seen with -save-temps then
5828 we will need to do a stat on the input_filename. The
5829 INPUT_STAT_SET signals that the stat is needed. */
5833 /* On fatal signals, delete all the temporary files. */
5836 fatal_error (signum)
5839 signal (signum, SIG_DFL);
5840 delete_failure_queue ();
5841 delete_temp_files ();
5842 /* Get the same signal again, this time not handled,
5843 so its normal effect occurs. */
5844 kill (getpid (), signum);
5847 extern int main PARAMS ((int, const char *const *));
5852 const char *const *argv;
5856 int linker_was_run = 0;
5857 char *explicit_link_files;
5860 struct user_specs *uptr;
5862 p = argv[0] + strlen (argv[0]);
5863 while (p != argv[0] && !IS_DIR_SEPARATOR (p[-1]))
5867 xmalloc_set_program_name (programname);
5869 #ifdef GCC_DRIVER_HOST_INITIALIZATION
5870 /* Perform host dependent initialization when needed. */
5871 GCC_DRIVER_HOST_INITIALIZATION;
5874 gcc_init_libintl ();
5876 if (signal (SIGINT, SIG_IGN) != SIG_IGN)
5877 signal (SIGINT, fatal_error);
5879 if (signal (SIGHUP, SIG_IGN) != SIG_IGN)
5880 signal (SIGHUP, fatal_error);
5882 if (signal (SIGTERM, SIG_IGN) != SIG_IGN)
5883 signal (SIGTERM, fatal_error);
5885 if (signal (SIGPIPE, SIG_IGN) != SIG_IGN)
5886 signal (SIGPIPE, fatal_error);
5889 /* We *MUST* set SIGCHLD to SIG_DFL so that the wait4() call will
5890 receive the signal. A different setting is inheritable */
5891 signal (SIGCHLD, SIG_DFL);
5894 /* Allocate the argument vector. */
5897 obstack_init (&obstack);
5899 /* Build multilib_select, et. al from the separate lines that make up each
5900 multilib selection. */
5902 const char *const *q = multilib_raw;
5905 obstack_init (&multilib_obstack);
5906 while ((p = *q++) != (char *) 0)
5907 obstack_grow (&multilib_obstack, p, strlen (p));
5909 obstack_1grow (&multilib_obstack, 0);
5910 multilib_select = obstack_finish (&multilib_obstack);
5912 q = multilib_matches_raw;
5913 while ((p = *q++) != (char *) 0)
5914 obstack_grow (&multilib_obstack, p, strlen (p));
5916 obstack_1grow (&multilib_obstack, 0);
5917 multilib_matches = obstack_finish (&multilib_obstack);
5919 q = multilib_exclusions_raw;
5920 while ((p = *q++) != (char *) 0)
5921 obstack_grow (&multilib_obstack, p, strlen (p));
5923 obstack_1grow (&multilib_obstack, 0);
5924 multilib_exclusions = obstack_finish (&multilib_obstack);
5927 for (i = 0; i < ARRAY_SIZE (multilib_defaults_raw); i++)
5930 obstack_1grow (&multilib_obstack, ' ');
5931 obstack_grow (&multilib_obstack,
5932 multilib_defaults_raw[i],
5933 strlen (multilib_defaults_raw[i]));
5937 obstack_1grow (&multilib_obstack, 0);
5938 multilib_defaults = obstack_finish (&multilib_obstack);
5941 /* Set up to remember the pathname of gcc and any options
5942 needed for collect. We use argv[0] instead of programname because
5943 we need the complete pathname. */
5944 obstack_init (&collect_obstack);
5945 obstack_grow (&collect_obstack, "COLLECT_GCC=", sizeof ("COLLECT_GCC=") - 1);
5946 obstack_grow (&collect_obstack, argv[0], strlen (argv[0]) + 1);
5947 putenv (obstack_finish (&collect_obstack));
5949 #ifdef INIT_ENVIRONMENT
5950 /* Set up any other necessary machine specific environment variables. */
5951 putenv (INIT_ENVIRONMENT);
5954 /* Make a table of what switches there are (switches, n_switches).
5955 Make a table of specified input files (infiles, n_infiles).
5956 Decode switches that are handled locally. */
5958 process_command (argc, argv);
5960 /* Process DRIVER_SELF_SPECS, adding any new options to the end
5961 of the command line. */
5963 for (i = 0; i < ARRAY_SIZE (driver_self_specs); i++)
5964 do_self_spec (driver_self_specs[i]);
5966 /* Initialize the vector of specs to just the default.
5967 This means one element containing 0s, as a terminator. */
5969 compilers = (struct compiler *) xmalloc (sizeof default_compilers);
5970 memcpy ((char *) compilers, (char *) default_compilers,
5971 sizeof default_compilers);
5972 n_compilers = n_default_compilers;
5974 /* Read specs from a file if there is one. */
5976 machine_suffix = concat (spec_machine, dir_separator_str,
5977 spec_version, dir_separator_str, NULL);
5978 just_machine_suffix = concat (spec_machine, dir_separator_str, NULL);
5980 specs_file = find_a_file (&startfile_prefixes, "specs", R_OK, 0);
5981 /* Read the specs file unless it is a default one. */
5982 if (specs_file != 0 && strcmp (specs_file, "specs"))
5983 read_specs (specs_file, TRUE);
5987 /* We need to check standard_exec_prefix/just_machine_suffix/specs
5988 for any override of as, ld and libraries. */
5989 specs_file = (char *) alloca (strlen (standard_exec_prefix)
5990 + strlen (just_machine_suffix)
5991 + sizeof ("specs"));
5993 strcpy (specs_file, standard_exec_prefix);
5994 strcat (specs_file, just_machine_suffix);
5995 strcat (specs_file, "specs");
5996 if (access (specs_file, R_OK) == 0)
5997 read_specs (specs_file, TRUE);
5999 /* If not cross-compiling, look for startfiles in the standard places.
6000 Similarly, don't add the standard prefixes if startfile handling
6001 will be under control of startfile_prefix_spec. */
6002 if (*cross_compile == '0' && *startfile_prefix_spec == 0)
6004 if (*md_exec_prefix)
6006 add_prefix (&exec_prefixes, md_exec_prefix, "GCC",
6007 PREFIX_PRIORITY_LAST, 0, NULL, 0);
6008 add_prefix (&startfile_prefixes, md_exec_prefix, "GCC",
6009 PREFIX_PRIORITY_LAST, 0, NULL, 0);
6012 if (*md_startfile_prefix)
6013 add_prefix (&startfile_prefixes, md_startfile_prefix, "GCC",
6014 PREFIX_PRIORITY_LAST, 0, NULL, 1);
6016 if (*md_startfile_prefix_1)
6017 add_prefix (&startfile_prefixes, md_startfile_prefix_1, "GCC",
6018 PREFIX_PRIORITY_LAST, 0, NULL, 1);
6020 /* If standard_startfile_prefix is relative, base it on
6021 standard_exec_prefix. This lets us move the installed tree
6022 as a unit. If GCC_EXEC_PREFIX is defined, base
6023 standard_startfile_prefix on that as well. */
6024 if (IS_ABSOLUTE_PATHNAME (standard_startfile_prefix))
6025 add_prefix (&startfile_prefixes, standard_startfile_prefix, "BINUTILS",
6026 PREFIX_PRIORITY_LAST, 0, NULL, 1);
6029 if (gcc_exec_prefix)
6030 add_prefix (&startfile_prefixes,
6031 concat (gcc_exec_prefix, machine_suffix,
6032 standard_startfile_prefix, NULL),
6033 NULL, PREFIX_PRIORITY_LAST, 0, NULL, 1);
6034 add_prefix (&startfile_prefixes,
6035 concat (standard_exec_prefix,
6037 standard_startfile_prefix, NULL),
6038 NULL, PREFIX_PRIORITY_LAST, 0, NULL, 1);
6041 add_prefix (&startfile_prefixes, standard_startfile_prefix_1,
6042 "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL, 1);
6043 add_prefix (&startfile_prefixes, standard_startfile_prefix_2,
6044 "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL, 1);
6045 #if 0 /* Can cause surprises, and one can use -B./ instead. */
6046 add_prefix (&startfile_prefixes, "./", NULL,
6047 PREFIX_PRIORITY_LAST, 1, NULL, 0);
6052 if (!IS_ABSOLUTE_PATHNAME (standard_startfile_prefix)
6054 add_prefix (&startfile_prefixes,
6055 concat (gcc_exec_prefix, machine_suffix,
6056 standard_startfile_prefix, NULL),
6057 "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL, 1);
6060 if (*startfile_prefix_spec != 0
6061 && do_spec_2 (startfile_prefix_spec) == 0
6062 && do_spec_1 (" ", 0, NULL) == 0)
6065 for (ndx = 0; ndx < argbuf_index; ndx++)
6066 add_prefix (&startfile_prefixes, argbuf[ndx], "BINUTILS",
6067 PREFIX_PRIORITY_LAST, 0, NULL, 1);
6070 /* Process any user specified specs in the order given on the command
6072 for (uptr = user_specs_head; uptr; uptr = uptr->next)
6074 char *filename = find_a_file (&startfile_prefixes, uptr->filename,
6076 read_specs (filename ? filename : uptr->filename, FALSE);
6079 /* If we have a GCC_EXEC_PREFIX envvar, modify it for cpp's sake. */
6080 if (gcc_exec_prefix)
6081 gcc_exec_prefix = concat (gcc_exec_prefix, spec_machine, dir_separator_str,
6082 spec_version, dir_separator_str, NULL);
6084 /* Now we have the specs.
6085 Set the `valid' bits for switches that match anything in any spec. */
6087 validate_all_switches ();
6089 /* Now that we have the switches and the specs, set
6090 the subdirectory based on the options. */
6091 set_multilib_dir ();
6093 /* Warn about any switches that no pass was interested in. */
6095 for (i = 0; (int) i < n_switches; i++)
6096 if (! switches[i].validated)
6097 error ("unrecognized option `-%s'", switches[i].part1);
6099 /* Obey some of the options. */
6101 if (print_search_dirs)
6103 printf (_("install: %s%s\n"), standard_exec_prefix, machine_suffix);
6104 printf (_("programs: %s\n"), build_search_list (&exec_prefixes, "", 0));
6105 printf (_("libraries: %s\n"), build_search_list (&startfile_prefixes, "", 0));
6109 if (print_file_name)
6111 printf ("%s\n", find_file (print_file_name));
6115 if (print_prog_name)
6117 char *newname = find_a_file (&exec_prefixes, print_prog_name, X_OK, 0);
6118 printf ("%s\n", (newname ? newname : print_prog_name));
6122 if (print_multi_lib)
6124 print_multilib_info ();
6128 if (print_multi_directory)
6130 if (multilib_dir == NULL)
6133 printf ("%s\n", multilib_dir);
6137 if (print_multi_os_directory)
6139 if (multilib_os_dir == NULL)
6142 printf ("%s\n", multilib_os_dir);
6146 if (target_help_flag)
6148 /* Print if any target specific options. */
6150 /* We do not exit here. Instead we have created a fake input file
6151 called 'target-dummy' which needs to be compiled, and we pass this
6152 on to the various sub-processes, along with the --target-help
6156 if (print_help_list)
6162 printf (_("\nFor bug reporting instructions, please see:\n"));
6163 printf ("%s.\n", bug_report_url);
6168 /* We do not exit here. Instead we have created a fake input file
6169 called 'help-dummy' which needs to be compiled, and we pass this
6170 on the various sub-processes, along with the --help switch. */
6178 notice ("Configured with: %s\n", configuration_arguments);
6180 #ifdef THREAD_MODEL_SPEC
6181 /* We could have defined THREAD_MODEL_SPEC to "%*" by default,
6182 but there's no point in doing all this processing just to get
6183 thread_model back. */
6184 obstack_init (&obstack);
6185 do_spec_1 (THREAD_MODEL_SPEC, 0, thread_model);
6186 obstack_1grow (&obstack, '\0');
6187 thrmod = obstack_finish (&obstack);
6189 thrmod = thread_model;
6192 notice ("Thread model: %s\n", thrmod);
6194 /* compiler_version is truncated at the first space when initialized
6195 from version string, so truncate version_string at the first space
6196 before comparing. */
6197 for (n = 0; version_string[n]; n++)
6198 if (version_string[n] == ' ')
6201 if (! strncmp (version_string, compiler_version, n)
6202 && compiler_version[n] == 0)
6203 notice ("gcc version %s\n", version_string);
6205 notice ("gcc driver version %s executing gcc version %s\n",
6206 version_string, compiler_version);
6212 if (n_infiles == added_libraries)
6213 fatal ("no input files");
6215 /* Make a place to record the compiler output file names
6216 that correspond to the input files. */
6219 i += lang_specific_extra_outfiles;
6220 outfiles = (const char **) xcalloc (i, sizeof (char *));
6222 /* Record which files were specified explicitly as link input. */
6224 explicit_link_files = xcalloc (1, n_infiles);
6226 for (i = 0; (int) i < n_infiles; i++)
6228 int this_file_error = 0;
6230 /* Tell do_spec what to substitute for %i. */
6232 input_file_number = i;
6233 set_input (infiles[i].name);
6235 /* Use the same thing in %o, unless cp->spec says otherwise. */
6237 outfiles[i] = input_filename;
6239 /* Figure out which compiler from the file's suffix. */
6242 = lookup_compiler (infiles[i].name, input_filename_length,
6243 infiles[i].language);
6245 if (input_file_compiler)
6247 /* Ok, we found an applicable compiler. Run its spec. */
6249 if (input_file_compiler->spec[0] == '#')
6251 error ("%s: %s compiler not installed on this system",
6252 input_filename, &input_file_compiler->spec[1]);
6253 this_file_error = 1;
6257 value = do_spec (input_file_compiler->spec);
6259 this_file_error = 1;
6263 /* If this file's name does not contain a recognized suffix,
6264 record it as explicit linker input. */
6267 explicit_link_files[i] = 1;
6269 /* Clear the delete-on-failure queue, deleting the files in it
6270 if this compilation failed. */
6272 if (this_file_error)
6274 delete_failure_queue ();
6277 /* If this compilation succeeded, don't delete those files later. */
6278 clear_failure_queue ();
6281 /* Reset the output file name to the first input file name, for use
6282 with %b in LINK_SPEC on a target that prefers not to emit a.out
6285 set_input (infiles[0].name);
6287 if (error_count == 0)
6289 /* Make sure INPUT_FILE_NUMBER points to first available open
6291 input_file_number = n_infiles;
6292 if (lang_specific_pre_link ())
6296 /* Run ld to link all the compiler output files. */
6298 if (error_count == 0)
6300 int tmp = execution_count;
6302 /* We'll use ld if we can't find collect2. */
6303 if (! strcmp (linker_name_spec, "collect2"))
6305 char *s = find_a_file (&exec_prefixes, "collect2", X_OK, 0);
6307 linker_name_spec = "ld";
6309 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
6311 putenv_from_prefixes (&exec_prefixes, "COMPILER_PATH");
6312 putenv_from_prefixes (&startfile_prefixes, LIBRARY_PATH_ENV);
6314 value = do_spec (link_command_spec);
6317 linker_was_run = (tmp != execution_count);
6320 /* If options said don't run linker,
6321 complain about input files to be given to the linker. */
6323 if (! linker_was_run && error_count == 0)
6324 for (i = 0; (int) i < n_infiles; i++)
6325 if (explicit_link_files[i])
6326 error ("%s: linker input file unused because linking not done",
6329 /* Delete some or all of the temporary files we made. */
6332 delete_failure_queue ();
6333 delete_temp_files ();
6335 if (print_help_list)
6337 printf (("\nFor bug reporting instructions, please see:\n"));
6338 printf ("%s\n", bug_report_url);
6341 return (signal_count != 0 ? 2
6342 : error_count > 0 ? (pass_exit_codes ? greatest_status : 1)
6346 /* Find the proper compilation spec for the file name NAME,
6347 whose length is LENGTH. LANGUAGE is the specified language,
6348 or 0 if this file is to be passed to the linker. */
6350 static struct compiler *
6351 lookup_compiler (name, length, language)
6354 const char *language;
6356 struct compiler *cp;
6358 /* If this was specified by the user to be a linker input, indicate that. */
6359 if (language != 0 && language[0] == '*')
6362 /* Otherwise, look for the language, if one is spec'd. */
6365 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6366 if (cp->suffix[0] == '@' && !strcmp (cp->suffix + 1, language))
6369 error ("language %s not recognized", language);
6373 /* Look for a suffix. */
6374 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6376 if (/* The suffix `-' matches only the file name `-'. */
6377 (!strcmp (cp->suffix, "-") && !strcmp (name, "-"))
6378 || (strlen (cp->suffix) < length
6379 /* See if the suffix matches the end of NAME. */
6380 && !strcmp (cp->suffix,
6381 name + length - strlen (cp->suffix))
6386 #if defined (OS2) ||defined (HAVE_DOS_BASED_FILE_SYSTEM)
6387 /* look again, but case-insensitively this time. */
6389 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6391 if (/* The suffix `-' matches only the file name `-'. */
6392 (!strcmp (cp->suffix, "-") && !strcmp (name, "-"))
6393 || (strlen (cp->suffix) < length
6394 /* See if the suffix matches the end of NAME. */
6395 && ((!strcmp (cp->suffix,
6396 name + length - strlen (cp->suffix))
6397 || !strpbrk (cp->suffix, "ABCDEFGHIJKLMNOPQRSTUVWXYZ"))
6398 && !strcasecmp (cp->suffix,
6399 name + length - strlen (cp->suffix)))
6405 if (cp >= compilers)
6407 if (cp->spec[0] != '@')
6408 /* A non-alias entry: return it. */
6411 /* An alias entry maps a suffix to a language.
6412 Search for the language; pass 0 for NAME and LENGTH
6413 to avoid infinite recursion if language not found. */
6414 return lookup_compiler (NULL, 0, cp->spec + 1);
6420 save_string (s, len)
6424 char *result = xmalloc (len + 1);
6426 memcpy (result, s, len);
6432 pfatal_with_name (name)
6435 perror_with_name (name);
6436 delete_temp_files ();
6441 perror_with_name (name)
6444 error ("%s: %s", name, xstrerror (errno));
6448 pfatal_pexecute (errmsg_fmt, errmsg_arg)
6449 const char *errmsg_fmt;
6450 const char *errmsg_arg;
6454 int save_errno = errno;
6456 /* Space for trailing '\0' is in %s. */
6457 char *msg = xmalloc (strlen (errmsg_fmt) + strlen (errmsg_arg));
6458 sprintf (msg, errmsg_fmt, errmsg_arg);
6464 pfatal_with_name (errmsg_fmt);
6467 /* Output an error message and exit */
6472 fatal ("internal gcc abort");
6475 /* Output an error message and exit */
6478 fatal VPARAMS ((const char *msgid, ...))
6480 VA_OPEN (ap, msgid);
6481 VA_FIXEDARG (ap, const char *, msgid);
6483 fprintf (stderr, "%s: ", programname);
6484 vfprintf (stderr, _(msgid), ap);
6486 fprintf (stderr, "\n");
6487 delete_temp_files ();
6492 error VPARAMS ((const char *msgid, ...))
6494 VA_OPEN (ap, msgid);
6495 VA_FIXEDARG (ap, const char *, msgid);
6497 fprintf (stderr, "%s: ", programname);
6498 vfprintf (stderr, _(msgid), ap);
6501 fprintf (stderr, "\n");
6505 notice VPARAMS ((const char *msgid, ...))
6507 VA_OPEN (ap, msgid);
6508 VA_FIXEDARG (ap, const char *, msgid);
6510 vfprintf (stderr, _(msgid), ap);
6515 validate_all_switches ()
6517 struct compiler *comp;
6520 struct spec_list *spec;
6522 for (comp = compilers; comp->spec; comp++)
6526 if (c == '%' && (*p == '{' || (*p == 'W' && *++p == '{')))
6527 /* We have a switch spec. */
6528 validate_switches (p + 1);
6531 /* Look through the linked list of specs read from the specs file. */
6532 for (spec = specs; spec; spec = spec->next)
6534 p = *(spec->ptr_spec);
6536 if (c == '%' && (*p == '{' || (*p == 'W' && *++p == '{')))
6537 /* We have a switch spec. */
6538 validate_switches (p + 1);
6541 p = link_command_spec;
6543 if (c == '%' && (*p == '{' || (*p == 'W' && *++p == '{')))
6544 /* We have a switch spec. */
6545 validate_switches (p + 1);
6548 /* Look at the switch-name that comes after START
6549 and mark as valid all supplied switches that match it. */
6552 validate_switches (start)
6555 const char *p = start;
6572 while (*p != ':' && *p != '}' && *p != '|' && *p != '&')
6577 else if (p[-1] == '*')
6579 /* Mark all matching switches as valid. */
6580 for (i = 0; i < n_switches; i++)
6581 if (!strncmp (switches[i].part1, filter, p - filter - 1))
6582 switches[i].validated = 1;
6586 /* Mark an exact matching switch as valid. */
6587 for (i = 0; i < n_switches; i++)
6589 if (!strncmp (switches[i].part1, filter, p - filter)
6590 && switches[i].part1[p - filter] == 0)
6591 switches[i].validated = 1;
6595 if (*p++ == '|' || p[-1] == '&')
6605 static struct mdswitchstr *mdswitches;
6606 static int n_mdswitches;
6608 /* Check whether a particular argument was used. The first time we
6609 canonicalize the switches to keep only the ones we care about. */
6619 const char *replace;
6624 static struct mswitchstr *mswitches;
6625 static int n_mswitches;
6630 struct mswitchstr *matches;
6634 /* Break multilib_matches into the component strings of string
6635 and replacement string. */
6636 for (q = multilib_matches; *q != '\0'; q++)
6641 (struct mswitchstr *) alloca ((sizeof (struct mswitchstr)) * cnt);
6643 q = multilib_matches;
6653 matches[i].len = q - matches[i].str;
6655 matches[i].replace = ++q;
6656 while (*q != ';' && *q != '\0')
6662 matches[i].rep_len = q - matches[i].replace;
6668 /* Now build a list of the replacement string for switches that we care
6669 about. Make sure we allocate at least one entry. This prevents
6670 xmalloc from calling fatal, and prevents us from re-executing this
6673 = (struct mswitchstr *)
6674 xmalloc (sizeof (struct mswitchstr)
6675 * (n_mdswitches + (n_switches ? n_switches : 1)));
6676 for (i = 0; i < n_switches; i++)
6678 int xlen = strlen (switches[i].part1);
6679 for (j = 0; j < cnt; j++)
6680 if (xlen == matches[j].len
6681 && ! strncmp (switches[i].part1, matches[j].str, xlen))
6683 mswitches[n_mswitches].str = matches[j].replace;
6684 mswitches[n_mswitches].len = matches[j].rep_len;
6685 mswitches[n_mswitches].replace = (char *) 0;
6686 mswitches[n_mswitches].rep_len = 0;
6692 /* Add MULTILIB_DEFAULTS switches too, as long as they were not present
6693 on the command line nor any options mutually incompatible with
6695 for (i = 0; i < n_mdswitches; i++)
6699 for (q = multilib_options; *q != '\0'; q++)
6705 while (strncmp (q, mdswitches[i].str, mdswitches[i].len) != 0
6706 || strchr (" /", q[mdswitches[i].len]) == NULL)
6708 while (*q != ' ' && *q != '/' && *q != '\0')
6715 if (*q != ' ' && *q != '\0')
6717 while (*r != ' ' && *r != '\0')
6720 while (*q != ' ' && *q != '/' && *q != '\0')
6723 if (used_arg (r, q - r))
6728 mswitches[n_mswitches].str = mdswitches[i].str;
6729 mswitches[n_mswitches].len = mdswitches[i].len;
6730 mswitches[n_mswitches].replace = (char *) 0;
6731 mswitches[n_mswitches].rep_len = 0;
6744 for (i = 0; i < n_mswitches; i++)
6745 if (len == mswitches[i].len && ! strncmp (p, mswitches[i].str, len))
6752 default_arg (p, len)
6758 for (i = 0; i < n_mdswitches; i++)
6759 if (len == mdswitches[i].len && ! strncmp (p, mdswitches[i].str, len))
6765 /* Work out the subdirectory to use based on the options. The format of
6766 multilib_select is a list of elements. Each element is a subdirectory
6767 name followed by a list of options followed by a semicolon. The format
6768 of multilib_exclusions is the same, but without the preceding
6769 directory. First gcc will check the exclusions, if none of the options
6770 beginning with an exclamation point are present, and all of the other
6771 options are present, then we will ignore this completely. Passing
6772 that, gcc will consider each multilib_select in turn using the same
6773 rules for matching the options. If a match is found, that subdirectory
6780 unsigned int this_path_len;
6781 const char *this_path, *this_arg;
6782 const char *start, *end;
6784 int ok, ndfltok, first;
6787 start = multilib_defaults;
6788 while (*start == ' ' || *start == '\t')
6790 while (*start != '\0')
6793 while (*start != ' ' && *start != '\t' && *start != '\0')
6795 while (*start == ' ' || *start == '\t')
6804 = (struct mdswitchstr *) xmalloc (sizeof (struct mdswitchstr)
6806 for (start = multilib_defaults; *start != '\0'; start = end + 1)
6808 while (*start == ' ' || *start == '\t')
6814 for (end = start + 1;
6815 *end != ' ' && *end != '\t' && *end != '\0'; end++)
6818 obstack_grow (&multilib_obstack, start, end - start);
6819 obstack_1grow (&multilib_obstack, 0);
6820 mdswitches[i].str = obstack_finish (&multilib_obstack);
6821 mdswitches[i++].len = end - start;
6828 p = multilib_exclusions;
6831 /* Ignore newlines. */
6838 /* Check the arguments. */
6852 while (*p != ' ' && *p != ';')
6859 if (*this_arg != '!')
6867 ok = used_arg (this_arg, p - this_arg);
6882 p = multilib_select;
6885 /* Ignore newlines. */
6892 /* Get the initial path. */
6900 this_path_len = p - this_path;
6902 /* Check the arguments. */
6918 while (*p != ' ' && *p != ';')
6925 if (*this_arg != '!')
6933 /* If this is a default argument, we can just ignore it.
6934 This is true even if this_arg begins with '!'. Beginning
6935 with '!' does not mean that this argument is necessarily
6936 inappropriate for this library: it merely means that
6937 there is a more specific library which uses this
6938 argument. If this argument is a default, we need not
6939 consider that more specific library. */
6940 ok = used_arg (this_arg, p - this_arg);
6947 if (default_arg (this_arg, p - this_arg))
6956 if (this_path_len != 1
6957 || this_path[0] != '.')
6959 char *new_multilib_dir = xmalloc (this_path_len + 1);
6962 strncpy (new_multilib_dir, this_path, this_path_len);
6963 new_multilib_dir[this_path_len] = '\0';
6964 q = strchr (new_multilib_dir, ':');
6967 multilib_dir = new_multilib_dir;
6974 const char *q = this_path, *end = this_path + this_path_len;
6976 while (q < end && *q != ':')
6980 char *new_multilib_os_dir = xmalloc (end - q);
6981 memcpy (new_multilib_os_dir, q + 1, end - q - 1);
6982 new_multilib_os_dir[end - q - 1] = '\0';
6983 multilib_os_dir = new_multilib_os_dir;
6991 if (multilib_dir == NULL && multilib_os_dir != NULL
6992 && strcmp (multilib_os_dir, ".") == 0)
6994 free ((char *) multilib_os_dir);
6995 multilib_os_dir = NULL;
6997 else if (multilib_dir != NULL && multilib_os_dir == NULL)
6998 multilib_os_dir = multilib_dir;
7001 /* Print out the multiple library subdirectory selection
7002 information. This prints out a series of lines. Each line looks
7003 like SUBDIRECTORY;@OPTION@OPTION, with as many options as is
7004 required. Only the desired options are printed out, the negative
7005 matches. The options are print without a leading dash. There are
7006 no spaces to make it easy to use the information in the shell.
7007 Each subdirectory is printed only once. This assumes the ordering
7008 generated by the genmultilib script. Also, we leave out ones that match
7012 print_multilib_info ()
7014 const char *p = multilib_select;
7015 const char *last_path = 0, *this_path;
7017 unsigned int last_path_len = 0;
7022 /* Ignore newlines. */
7029 /* Get the initial path. */
7038 /* When --disable-multilib was used but target defines
7039 MULTILIB_OSDIRNAMES, entries starting with .: are there just
7040 to find multilib_os_dir, so skip them from output. */
7041 if (this_path[0] == '.' && this_path[1] == ':')
7044 /* Check for matches with the multilib_exclusions. We don't bother
7045 with the '!' in either list. If any of the exclusion rules match
7046 all of its options with the select rule, we skip it. */
7048 const char *e = multilib_exclusions;
7049 const char *this_arg;
7054 /* Ignore newlines. */
7061 /* Check the arguments. */
7078 while (*e != ' ' && *e != ';')
7089 int len = e - this_arg;
7096 while (*q != ' ' && *q != ';')
7103 if (! strncmp (arg, this_arg, (len < q - arg) ? q - arg : len) ||
7104 default_arg (this_arg, e - this_arg))
7134 /* If this is a duplicate, skip it. */
7135 skip = (last_path != 0 && (unsigned int) (p - this_path) == last_path_len
7136 && ! strncmp (last_path, this_path, last_path_len));
7138 last_path = this_path;
7139 last_path_len = p - this_path;
7142 /* If this directory requires any default arguments, we can skip
7143 it. We will already have printed a directory identical to
7144 this one which does not require that default argument. */
7162 while (*q != ' ' && *q != ';')
7170 && default_arg (arg, q - arg))
7185 for (p1 = last_path; p1 < p && *p1 != ':'; p1++)
7204 use_arg = *p != '!';
7209 while (*p != ' ' && *p != ';')
7224 /* If there are extra options, print them now. */
7225 if (multilib_extra && *multilib_extra)
7227 int print_at = TRUE;
7230 for (q = multilib_extra; *q != '\0'; q++)
7251 /* if-exists built-in spec function.
7253 Checks to see if the file specified by the absolute pathname in
7254 ARGS exists. Returns that pathname if found.
7256 The usual use for this function is to check for a library file
7257 (whose name has been expanded with %s). */
7260 if_exists_spec_function (argc, argv)
7264 /* Must have only one argument. */
7265 if (argc == 1 && IS_ABSOLUTE_PATHNAME (argv[0]) && ! access (argv[0], R_OK))
7271 /* if-exists-else built-in spec function.
7273 This is like if-exists, but takes an additional argument which
7274 is returned if the first argument does not exist. */
7277 if_exists_else_spec_function (argc, argv)
7281 /* Must have exactly two arguments. */
7285 if (IS_ABSOLUTE_PATHNAME (argv[0]) && ! access (argv[0], R_OK))