1 /* Compiler driver program that can handle many languages.
2 Copyright (C) 1987, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
3 1999, 2000, 2001, 2002, 2003, 2004 Free Software Foundation, Inc.
5 This file is part of GCC.
7 GCC is free software; you can redistribute it and/or modify it under
8 the terms of the GNU General Public License as published by the Free
9 Software Foundation; either version 2, or (at your option) any later
12 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
13 WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
17 You should have received a copy of the GNU General Public License
18 along with GCC; see the file COPYING. If not, write to the Free
19 Software Foundation, 59 Temple Place - Suite 330, Boston, MA
22 This paragraph is here to try to keep Sun CC from dying.
23 The number of chars here seems crucial!!!! */
25 /* This program is the user interface to the C compiler and possibly to
26 other compilers. It is used because compilation is a complicated procedure
27 which involves running several programs and passing temporary files between
28 them, forwarding the users switches to those programs selectively,
29 and deleting the temporary files at the end.
31 CC recognizes how to compile each input file by suffixes in the file names.
32 Once it knows which kind of compilation to perform, the procedure for
33 compilation is specified by a string called a "spec". */
35 /* A Short Introduction to Adding a Command-Line Option.
37 Before adding a command-line option, consider if it is really
38 necessary. Each additional command-line option adds complexity and
39 is difficult to remove in subsequent versions.
41 In the following, consider adding the command-line argument
44 1. Each command-line option is specified in the specs file. The
45 notation is described below in the comment entitled "The Specs
48 2. In this file, add an entry to "option_map" equating the long
49 `--' argument version and any shorter, single letter version. Read
50 the comments in the declaration of "struct option_map" for an
51 explanation. Do not omit the first `-'.
53 3. Look in the "specs" file to determine which program or option
54 list should be given the argument, e.g., "cc1_options". Add the
55 appropriate syntax for the shorter option version to the
56 corresponding "const char *" entry in this file. Omit the first
57 `-' from the option. For example, use `-bar', rather than `--bar'.
59 4. If the argument takes an argument, e.g., `--baz argument1',
60 modify either DEFAULT_SWITCH_TAKES_ARG or
61 DEFAULT_WORD_SWITCH_TAKES_ARG in this file. Omit the first `-'
64 5. Document the option in this file's display_help(). If the
65 option is passed to a subprogram, modify its corresponding
66 function, e.g., cppinit.c:print_help() or toplev.c:display_help(),
69 6. Compile and test. Make sure that your new specs file is being
70 read. For example, use a debugger to investigate the value of
71 "specs_file" in main(). */
75 #include "coretypes.h"
76 #include "multilib.h" /* before tm.h */
79 #if ! defined( SIGCHLD ) && defined( SIGCLD )
80 # define SIGCHLD SIGCLD
88 #ifdef HAVE_SYS_RESOURCE_H
89 #include <sys/resource.h>
91 #if defined (HAVE_DECL_GETRUSAGE) && !HAVE_DECL_GETRUSAGE
92 extern int getrusage (int, struct rusage *);
95 /* By default there is no special suffix for target executables. */
96 /* FIXME: when autoconf is fixed, remove the host check - dj */
97 #if defined(TARGET_EXECUTABLE_SUFFIX) && defined(HOST_EXECUTABLE_SUFFIX)
98 #define HAVE_TARGET_EXECUTABLE_SUFFIX
101 /* By default there is no special suffix for host executables. */
102 #ifdef HOST_EXECUTABLE_SUFFIX
103 #define HAVE_HOST_EXECUTABLE_SUFFIX
105 #define HOST_EXECUTABLE_SUFFIX ""
108 /* By default, the suffix for target object files is ".o". */
109 #ifdef TARGET_OBJECT_SUFFIX
110 #define HAVE_TARGET_OBJECT_SUFFIX
112 #define TARGET_OBJECT_SUFFIX ".o"
115 static const char dir_separator_str[] = { DIR_SEPARATOR, 0 };
117 /* Most every one is fine with LIBRARY_PATH. For some, it conflicts. */
118 #ifndef LIBRARY_PATH_ENV
119 #define LIBRARY_PATH_ENV "LIBRARY_PATH"
123 #define kill(p,s) raise(s)
126 /* If a stage of compilation returns an exit status >= 1,
127 compilation of that file ceases. */
129 #define MIN_FATAL_STATUS 1
131 /* Flag set by cppspec.c to 1. */
134 /* Flag saying to pass the greatest exit code returned by a sub-process
135 to the calling program. */
136 static int pass_exit_codes;
138 /* Definition of string containing the arguments given to configure. */
139 #include "configargs.h"
141 /* Flag saying to print the directories gcc will search through looking for
142 programs, libraries, etc. */
144 static int print_search_dirs;
146 /* Flag saying to print the full filename of this file
147 as found through our usual search mechanism. */
149 static const char *print_file_name = NULL;
151 /* As print_file_name, but search for executable file. */
153 static const char *print_prog_name = NULL;
155 /* Flag saying to print the relative path we'd use to
156 find libgcc.a given the current compiler flags. */
158 static int print_multi_directory;
160 /* Flag saying to print the relative path we'd use to
161 find OS libraries given the current compiler flags. */
163 static int print_multi_os_directory;
165 /* Flag saying to print the list of subdirectories and
166 compiler flags used to select them in a standard form. */
168 static int print_multi_lib;
170 /* Flag saying to print the command line options understood by gcc and its
173 static int print_help_list;
175 /* Flag indicating whether we should print the command and arguments */
177 static int verbose_flag;
179 /* Flag indicating whether we should ONLY print the command and
180 arguments (like verbose_flag) without executing the command.
181 Displayed arguments are quoted so that the generated command
182 line is suitable for execution. This is intended for use in
183 shell scripts to capture the driver-generated command line. */
184 static int verbose_only_flag;
186 /* Flag indicating to print target specific command line options. */
188 static int target_help_flag;
190 /* Flag indicating whether we should report subprocess execution times
191 (if this is supported by the system - see pexecute.c). */
193 static int report_times;
195 /* Nonzero means place this string before uses of /, so that include
196 and library files can be found in an alternate location. */
198 #ifdef TARGET_SYSTEM_ROOT
199 static const char *target_system_root = TARGET_SYSTEM_ROOT;
201 static const char *target_system_root = 0;
204 /* Nonzero means pass the updated target_system_root to the compiler. */
206 static int target_system_root_changed;
208 /* Nonzero means append this string to target_system_root. */
210 static const char *target_sysroot_suffix = 0;
212 /* Nonzero means append this string to target_system_root for headers. */
214 static const char *target_sysroot_hdrs_suffix = 0;
216 /* Nonzero means write "temp" files in source directory
217 and use the source file's name in them, and don't delete them. */
219 static int save_temps_flag;
221 /* Nonzero means use pipes to communicate between subprocesses.
222 Overridden by either of the above two flags. */
224 static int use_pipes;
226 /* The compiler version. */
228 static const char *compiler_version;
230 /* The target version specified with -V */
232 static const char *const spec_version = DEFAULT_TARGET_VERSION;
234 /* The target machine specified with -b. */
236 static const char *spec_machine = DEFAULT_TARGET_MACHINE;
238 /* Nonzero if cross-compiling.
239 When -b is used, the value comes from the `specs' file. */
242 static const char *cross_compile = "1";
244 static const char *cross_compile = "0";
247 #ifdef MODIFY_TARGET_NAME
249 /* Information on how to alter the target name based on a command-line
250 switch. The only case we support now is simply appending or deleting a
251 string to or from the end of the first part of the configuration name. */
253 static const struct modify_target
255 const char *const sw;
256 const enum add_del {ADD, DELETE} add_del;
257 const char *const str;
259 modify_target[] = MODIFY_TARGET_NAME;
262 /* The number of errors that have occurred; the link phase will not be
263 run if this is nonzero. */
264 static int error_count = 0;
266 /* Greatest exit code of sub-processes that has been encountered up to
268 static int greatest_status = 1;
270 /* This is the obstack which we use to allocate many strings. */
272 static struct obstack obstack;
274 /* This is the obstack to build an environment variable to pass to
275 collect2 that describes all of the relevant switches of what to
276 pass the compiler in building the list of pointers to constructors
279 static struct obstack collect_obstack;
281 /* These structs are used to collect resource usage information for
283 #ifdef HAVE_GETRUSAGE
284 static struct rusage rus, prus;
287 /* Forward declaration for prototypes. */
290 static void init_spec (void);
291 static void store_arg (const char *, int, int);
292 static char *load_specs (const char *);
293 static void read_specs (const char *, int);
294 static void set_spec (const char *, const char *);
295 static struct compiler *lookup_compiler (const char *, size_t, const char *);
296 static char *build_search_list (struct path_prefix *, const char *, int);
297 static void putenv_from_prefixes (struct path_prefix *, const char *);
298 static int access_check (const char *, int);
299 static char *find_a_file (struct path_prefix *, const char *, int, int);
300 static void add_prefix (struct path_prefix *, const char *, const char *,
301 int, int, int *, int);
302 static void add_sysrooted_prefix (struct path_prefix *, const char *,
303 const char *, int, int, int *, int);
304 static void translate_options (int *, const char *const **);
305 static char *skip_whitespace (char *);
306 static void delete_if_ordinary (const char *);
307 static void delete_temp_files (void);
308 static void delete_failure_queue (void);
309 static void clear_failure_queue (void);
310 static int check_live_switch (int, int);
311 static const char *handle_braces (const char *);
312 static inline bool input_suffix_matches (const char *, const char *);
313 static inline bool switch_matches (const char *, const char *, int);
314 static inline void mark_matching_switches (const char *, const char *, int);
315 static inline void process_marked_switches (void);
316 static const char *process_brace_body (const char *, const char *, const char *, int, int);
317 static const struct spec_function *lookup_spec_function (const char *);
318 static const char *eval_spec_function (const char *, const char *);
319 static const char *handle_spec_function (const char *);
320 static char *save_string (const char *, int);
321 static void set_collect_gcc_options (void);
322 static int do_spec_1 (const char *, int, const char *);
323 static int do_spec_2 (const char *);
324 static void do_option_spec (const char *, const char *);
325 static void do_self_spec (const char *);
326 static const char *find_file (const char *);
327 static int is_directory (const char *, const char *, int);
328 static const char *validate_switches (const char *);
329 static void validate_all_switches (void);
330 static inline void validate_switches_from_spec (const char *);
331 static void give_switch (int, int);
332 static int used_arg (const char *, int);
333 static int default_arg (const char *, int);
334 static void set_multilib_dir (void);
335 static void print_multilib_info (void);
336 static void perror_with_name (const char *);
337 static void pfatal_pexecute (const char *, const char *) ATTRIBUTE_NORETURN;
338 static void notice (const char *, ...) ATTRIBUTE_PRINTF_1;
339 static void display_help (void);
340 static void add_preprocessor_option (const char *, int);
341 static void add_assembler_option (const char *, int);
342 static void add_linker_option (const char *, int);
343 static void process_command (int, const char **);
344 static int execute (void);
345 static void alloc_args (void);
346 static void clear_args (void);
347 static void fatal_error (int);
348 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
349 static void init_gcc_specs (struct obstack *, const char *, const char *,
352 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
353 static const char *convert_filename (const char *, int, int);
356 static const char *if_exists_spec_function (int, const char **);
357 static const char *if_exists_else_spec_function (int, const char **);
359 /* The Specs Language
361 Specs are strings containing lines, each of which (if not blank)
362 is made up of a program name, and arguments separated by spaces.
363 The program name must be exact and start from root, since no path
364 is searched and it is unreliable to depend on the current working directory.
365 Redirection of input or output is not supported; the subprograms must
366 accept filenames saying what files to read and write.
368 In addition, the specs can contain %-sequences to substitute variable text
369 or for conditional text. Here is a table of all defined %-sequences.
370 Note that spaces are not generated automatically around the results of
371 expanding these sequences; therefore, you can concatenate them together
372 or with constant text in a single argument.
374 %% substitute one % into the program name or argument.
375 %i substitute the name of the input file being processed.
376 %b substitute the basename of the input file being processed.
377 This is the substring up to (and not including) the last period
378 and not including the directory.
379 %B same as %b, but include the file suffix (text after the last period).
381 substitute a file name that has suffix SUFFIX and is chosen
382 once per compilation, and mark the argument a la %d. To reduce
383 exposure to denial-of-service attacks, the file name is now
384 chosen in a way that is hard to predict even when previously
385 chosen file names are known. For example, `%g.s ... %g.o ... %g.s'
386 might turn into `ccUVUUAU.s ccXYAXZ12.o ccUVUUAU.s'. SUFFIX matches
387 the regexp "[.A-Za-z]*%O"; "%O" is treated exactly as if it
388 had been pre-processed. Previously, %g was simply substituted
389 with a file name chosen once per compilation, without regard
390 to any appended suffix (which was therefore treated just like
391 ordinary text), making such attacks more likely to succeed.
393 like %g, but if -pipe is in effect, expands simply to "-".
395 like %g, but if -pipe is in effect, expands to nothing. (We have both
396 %| and %m to accommodate differences between system assemblers; see
397 the AS_NEEDS_DASH_FOR_PIPED_INPUT target macro.)
399 like %g, but generates a new temporary file name even if %uSUFFIX
402 substitutes the last file name generated with %uSUFFIX, generating a
403 new one if there is no such last file name. In the absence of any
404 %uSUFFIX, this is just like %gSUFFIX, except they don't share
405 the same suffix "space", so `%g.s ... %U.s ... %g.s ... %U.s'
406 would involve the generation of two distinct file names, one
407 for each `%g.s' and another for each `%U.s'. Previously, %U was
408 simply substituted with a file name chosen for the previous %u,
409 without regard to any appended suffix.
411 substitutes the name of the HOST_BIT_BUCKET, if any, and if it is
412 writable, and if save-temps is off; otherwise, substitute the name
413 of a temporary file, just like %u. This temporary file is not
414 meant for communication between processes, but rather as a junk
417 substitutes .SUFFIX for the suffixes of a matched switch's args when
418 it is subsequently output with %*. SUFFIX is terminated by the next
420 %d marks the argument containing or following the %d as a
421 temporary file name, so that that file will be deleted if CC exits
422 successfully. Unlike %g, this contributes no text to the argument.
423 %w marks the argument containing or following the %w as the
424 "output file" of this compilation. This puts the argument
425 into the sequence of arguments that %o will substitute later.
426 %V indicates that this compilation produces no "output file".
428 like %{...} but mark last argument supplied within
429 as a file to be deleted on failure.
430 %o substitutes the names of all the output files, with spaces
431 automatically placed around them. You should write spaces
432 around the %o as well or the results are undefined.
433 %o is for use in the specs for running the linker.
434 Input files whose names have no recognized suffix are not compiled
435 at all, but they are included among the output files, so they will
437 %O substitutes the suffix for object files. Note that this is
438 handled specially when it immediately follows %g, %u, or %U
439 (with or without a suffix argument) because of the need for
440 those to form complete file names. The handling is such that
441 %O is treated exactly as if it had already been substituted,
442 except that %g, %u, and %U do not currently support additional
443 SUFFIX characters following %O as they would following, for
445 %I Substitute any of -iprefix (made from GCC_EXEC_PREFIX), -isysroot
446 (made from TARGET_SYSTEM_ROOT), and -isystem (made from COMPILER_PATH
447 and -B options) as necessary.
448 %s current argument is the name of a library or startup file of some sort.
449 Search for that file in a standard list of directories
450 and substitute the full name found.
451 %eSTR Print STR as an error message. STR is terminated by a newline.
452 Use this when inconsistent options are detected.
453 %nSTR Print STR as a notice. STR is terminated by a newline.
454 %x{OPTION} Accumulate an option for %X.
455 %X Output the accumulated linker options specified by compilations.
456 %Y Output the accumulated assembler options specified by compilations.
457 %Z Output the accumulated preprocessor options specified by compilations.
458 %a process ASM_SPEC as a spec.
459 This allows config.h to specify part of the spec for running as.
460 %A process ASM_FINAL_SPEC as a spec. A capital A is actually
461 used here. This can be used to run a post-processor after the
462 assembler has done its job.
463 %D Dump out a -L option for each directory in startfile_prefixes.
464 If multilib_dir is set, extra entries are generated with it affixed.
465 %l process LINK_SPEC as a spec.
466 %L process LIB_SPEC as a spec.
467 %G process LIBGCC_SPEC as a spec.
468 %M output multilib_dir with directory separators replaced with "_";
469 if multilib_dir is not set or is ".", output "".
470 %S process STARTFILE_SPEC as a spec. A capital S is actually used here.
471 %E process ENDFILE_SPEC as a spec. A capital E is actually used here.
472 %C process CPP_SPEC as a spec.
473 %1 process CC1_SPEC as a spec.
474 %2 process CC1PLUS_SPEC as a spec.
475 %* substitute the variable part of a matched option. (See below.)
476 Note that each comma in the substituted string is replaced by
478 %<S remove all occurrences of -S from the command line.
479 Note - this command is position dependent. % commands in the
480 spec string before this one will see -S, % commands in the
481 spec string after this one will not.
482 %<S* remove all occurrences of all switches beginning with -S from the
485 Call the named function FUNCTION, passing it ARGS. ARGS is
486 first processed as a nested spec string, then split into an
487 argument vector in the usual fashion. The function returns
488 a string which is processed as if it had appeared literally
489 as part of the current spec.
490 %{S} substitutes the -S switch, if that switch was given to CC.
491 If that switch was not specified, this substitutes nothing.
492 Here S is a metasyntactic variable.
493 %{S*} substitutes all the switches specified to CC whose names start
494 with -S. This is used for -o, -I, etc; switches that take
495 arguments. CC considers `-o foo' as being one switch whose
496 name starts with `o'. %{o*} would substitute this text,
497 including the space; thus, two arguments would be generated.
498 %{S*&T*} likewise, but preserve order of S and T options (the order
499 of S and T in the spec is not significant). Can be any number
500 of ampersand-separated variables; for each the wild card is
501 optional. Useful for CPP as %{D*&U*&A*}.
503 %{S:X} substitutes X, if the -S switch was given to CC.
504 %{!S:X} substitutes X, if the -S switch was NOT given to CC.
505 %{S*:X} substitutes X if one or more switches whose names start
506 with -S was given to CC. Normally X is substituted only
507 once, no matter how many such switches appeared. However,
508 if %* appears somewhere in X, then X will be substituted
509 once for each matching switch, with the %* replaced by the
510 part of that switch that matched the '*'.
511 %{.S:X} substitutes X, if processing a file with suffix S.
512 %{!.S:X} substitutes X, if NOT processing a file with suffix S.
514 %{S|T:X} substitutes X if either -S or -T was given to CC. This may be
515 combined with !, ., and * as above binding stronger than the OR.
516 If %* appears in X, all of the alternatives must be starred, and
517 only the first matching alternative is substituted.
518 %{S:X; if S was given to CC, substitutes X;
519 T:Y; else if T was given to CC, substitutes Y;
520 :D} else substitutes D. There can be as many clauses as you need.
521 This may be combined with ., !, |, and * as above.
523 %(Spec) processes a specification defined in a specs file as *Spec:
524 %[Spec] as above, but put __ around -D arguments
526 The conditional text X in a %{S:X} or similar construct may contain
527 other nested % constructs or spaces, or even newlines. They are
528 processed as usual, as described above. Trailing white space in X is
529 ignored. White space may also appear anywhere on the left side of the
530 colon in these constructs, except between . or * and the corresponding
533 The -O, -f, -m, and -W switches are handled specifically in these
534 constructs. If another value of -O or the negated form of a -f, -m, or
535 -W switch is found later in the command line, the earlier switch
536 value is ignored, except with {S*} where S is just one letter; this
537 passes all matching options.
539 The character | at the beginning of the predicate text is used to indicate
540 that a command should be piped to the following command, but only if -pipe
543 Note that it is built into CC which switches take arguments and which
544 do not. You might think it would be useful to generalize this to
545 allow each compiler's spec to say which switches take arguments. But
546 this cannot be done in a consistent fashion. CC cannot even decide
547 which input files have been specified without knowing which switches
548 take arguments, and it must know which input files to compile in order
549 to tell which compilers to run.
551 CC also knows implicitly that arguments starting in `-l' are to be
552 treated as compiler output files, and passed to the linker in their
553 proper position among the other output files. */
555 /* Define the macros used for specs %a, %l, %L, %S, %C, %1. */
557 /* config.h can define ASM_SPEC to provide extra args to the assembler
558 or extra switch-translations. */
563 /* config.h can define ASM_FINAL_SPEC to run a post processor after
564 the assembler has run. */
565 #ifndef ASM_FINAL_SPEC
566 #define ASM_FINAL_SPEC ""
569 /* config.h can define CPP_SPEC to provide extra args to the C preprocessor
570 or extra switch-translations. */
575 /* config.h can define CC1_SPEC to provide extra args to cc1 and cc1plus
576 or extra switch-translations. */
581 /* config.h can define CC1PLUS_SPEC to provide extra args to cc1plus
582 or extra switch-translations. */
584 #define CC1PLUS_SPEC ""
587 /* config.h can define LINK_SPEC to provide extra args to the linker
588 or extra switch-translations. */
593 /* config.h can define LIB_SPEC to override the default libraries. */
595 #define LIB_SPEC "%{!shared:%{g*:-lg} %{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p}}"
598 /* config.h can define LIBGCC_SPEC to override how and when libgcc.a is
601 #if defined(REAL_LIBGCC_SPEC)
602 #define LIBGCC_SPEC REAL_LIBGCC_SPEC
603 #elif defined(LINK_LIBGCC_SPECIAL) || defined(LINK_LIBGCC_SPECIAL_1)
604 /* Have gcc do the search for libgcc.a. */
605 #define LIBGCC_SPEC "libgcc.a%s"
607 #define LIBGCC_SPEC "-lgcc"
611 /* config.h can define STARTFILE_SPEC to override the default crt0 files. */
612 #ifndef STARTFILE_SPEC
613 #define STARTFILE_SPEC \
614 "%{!shared:%{pg:gcrt0%O%s}%{!pg:%{p:mcrt0%O%s}%{!p:crt0%O%s}}}"
617 /* config.h can define SWITCHES_NEED_SPACES to control which options
618 require spaces between the option and the argument. */
619 #ifndef SWITCHES_NEED_SPACES
620 #define SWITCHES_NEED_SPACES ""
623 /* config.h can define ENDFILE_SPEC to override the default crtn files. */
625 #define ENDFILE_SPEC ""
629 #define LINKER_NAME "collect2"
632 /* Define ASM_DEBUG_SPEC to be a spec suitable for translating '-g'
634 #ifndef ASM_DEBUG_SPEC
635 # if defined(DBX_DEBUGGING_INFO) && defined(DWARF2_DEBUGGING_INFO) \
636 && defined(HAVE_AS_GDWARF2_DEBUG_FLAG) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
637 # define ASM_DEBUG_SPEC \
638 (PREFERRED_DEBUGGING_TYPE == DBX_DEBUG \
639 ? "%{gdwarf-2*:--gdwarf2}%{!gdwarf-2*:%{g*:--gstabs}}" \
640 : "%{gstabs*:--gstabs}%{!gstabs*:%{g*:--gdwarf2}}")
642 # if defined(DBX_DEBUGGING_INFO) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
643 # define ASM_DEBUG_SPEC "%{g*:--gstabs}"
645 # if defined(DWARF2_DEBUGGING_INFO) && defined(HAVE_AS_GDWARF2_DEBUG_FLAG)
646 # define ASM_DEBUG_SPEC "%{g*:--gdwarf2}"
650 #ifndef ASM_DEBUG_SPEC
651 # define ASM_DEBUG_SPEC ""
654 /* Here is the spec for running the linker, after compiling all files. */
656 /* This is overridable by the target in case they need to specify the
657 -lgcc and -lc order specially, yet not require them to override all
658 of LINK_COMMAND_SPEC. */
659 #ifndef LINK_GCC_C_SEQUENCE_SPEC
660 #define LINK_GCC_C_SEQUENCE_SPEC "%G %L %G"
663 #ifndef LINK_PIE_SPEC
665 #define LINK_PIE_SPEC "%{pie:-pie} "
667 #define LINK_PIE_SPEC "%{pie:} "
671 /* -u* was put back because both BSD and SysV seem to support it. */
672 /* %{static:} simply prevents an error message if the target machine
673 doesn't handle -static. */
674 /* We want %{T*} after %{L*} and %D so that it can be used to specify linker
675 scripts which exist in user specified directories, or in standard
677 #ifndef LINK_COMMAND_SPEC
678 #define LINK_COMMAND_SPEC "\
679 %{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:\
680 %(linker) %l " LINK_PIE_SPEC "%X %{o*} %{A} %{d} %{e*} %{m} %{N} %{n} %{r}\
681 %{s} %{t} %{u*} %{x} %{z} %{Z} %{!A:%{!nostdlib:%{!nostartfiles:%S}}}\
682 %{static:} %{L*} %(link_libgcc) %o %{fprofile-arcs|fprofile-generate:-lgcov}\
683 %{!nostdlib:%{!nodefaultlibs:%(link_gcc_c_sequence)}}\
684 %{!A:%{!nostdlib:%{!nostartfiles:%E}}} %{T*} }}}}}}"
687 #ifndef LINK_LIBGCC_SPEC
688 # ifdef LINK_LIBGCC_SPECIAL
689 /* Don't generate -L options for startfile prefix list. */
690 # define LINK_LIBGCC_SPEC ""
692 /* Do generate them. */
693 # define LINK_LIBGCC_SPEC "%D"
697 #ifndef STARTFILE_PREFIX_SPEC
698 # define STARTFILE_PREFIX_SPEC ""
701 #ifndef SYSROOT_SUFFIX_SPEC
702 # define SYSROOT_SUFFIX_SPEC ""
705 #ifndef SYSROOT_HEADERS_SUFFIX_SPEC
706 # define SYSROOT_HEADERS_SUFFIX_SPEC ""
709 static const char *asm_debug;
710 static const char *cpp_spec = CPP_SPEC;
711 static const char *cc1_spec = CC1_SPEC;
712 static const char *cc1plus_spec = CC1PLUS_SPEC;
713 static const char *link_gcc_c_sequence_spec = LINK_GCC_C_SEQUENCE_SPEC;
714 static const char *asm_spec = ASM_SPEC;
715 static const char *asm_final_spec = ASM_FINAL_SPEC;
716 static const char *link_spec = LINK_SPEC;
717 static const char *lib_spec = LIB_SPEC;
718 static const char *libgcc_spec = LIBGCC_SPEC;
719 static const char *endfile_spec = ENDFILE_SPEC;
720 static const char *startfile_spec = STARTFILE_SPEC;
721 static const char *switches_need_spaces = SWITCHES_NEED_SPACES;
722 static const char *linker_name_spec = LINKER_NAME;
723 static const char *link_command_spec = LINK_COMMAND_SPEC;
724 static const char *link_libgcc_spec = LINK_LIBGCC_SPEC;
725 static const char *startfile_prefix_spec = STARTFILE_PREFIX_SPEC;
726 static const char *sysroot_suffix_spec = SYSROOT_SUFFIX_SPEC;
727 static const char *sysroot_hdrs_suffix_spec = SYSROOT_HEADERS_SUFFIX_SPEC;
729 /* Standard options to cpp, cc1, and as, to reduce duplication in specs.
730 There should be no need to override these in target dependent files,
731 but we need to copy them to the specs file so that newer versions
732 of the GCC driver can correctly drive older tool chains with the
733 appropriate -B options. */
735 /* When cpplib handles traditional preprocessing, get rid of this, and
736 call cc1 (or cc1obj in objc/lang-specs.h) from the main specs so
737 that we default the front end language better. */
738 static const char *trad_capable_cpp =
739 "cc1 -E %{traditional|ftraditional|traditional-cpp:-traditional-cpp}";
741 /* We don't wrap .d files in %W{} since a missing .d file, and
742 therefore no dependency entry, confuses make into thinking a .o
743 file that happens to exist is up-to-date. */
744 static const char *cpp_unique_options =
745 "%{C|CC:%{!E:%eGCC does not support -C or -CC without -E}}\
746 %{!Q:-quiet} %{nostdinc*} %{C} %{CC} %{v} %{I*&F*} %{P} %I\
747 %{MD:-MD %{!o:%b.d}%{o*:%.d%*}}\
748 %{MMD:-MMD %{!o:%b.d}%{o*:%.d%*}}\
749 %{M} %{MM} %{MF*} %{MG} %{MP} %{MQ*} %{MT*}\
750 %{!E:%{!M:%{!MM:%{MD|MMD:%{o*:-MQ %*}}}}}\
751 %{trigraphs} %{remap} %{g3:-dD} %{H} %C %{D*&U*&A*} %{i*} %Z %i\
754 /* This contains cpp options which are common with cc1_options and are passed
755 only when preprocessing only to avoid duplication. We pass the cc1 spec
756 options to the preprocessor so that it the cc1 spec may manipulate
757 options used to set target flags. Those special target flags settings may
758 in turn cause preprocessor symbols to be defined specially. */
759 static const char *cpp_options =
760 "%(cpp_unique_options) %1 %{m*} %{std*} %{ansi} %{W*&pedantic*} %{w} %{f*}\
761 %{g*:%{!g0:%{!fno-working-directory:-fworking-directory}}} %{O*} %{undef}";
763 /* This contains cpp options which are not passed when the preprocessor
764 output will be used by another program. */
765 static const char *cpp_debug_options = "%{d*}";
767 /* NB: This is shared amongst all front-ends. */
768 static const char *cc1_options =
769 "%{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\
770 %1 %{!Q:-quiet} -dumpbase %B %{d*} %{m*} %{a*}\
771 %{c|S:%{o*:-auxbase-strip %*}%{!o*:-auxbase %b}}%{!c:%{!S:-auxbase %b}}\
772 %{g*} %{O*} %{W*&pedantic*} %{w} %{std*} %{ansi}\
773 %{v:-version} %{pg:-p} %{p} %{f*} %{undef}\
774 %{Qn:-fno-ident} %{--help:--help}\
775 %{--target-help:--target-help}\
776 %{!fsyntax-only:%{S:%W{o*}%{!o*:-o %b.s}}}\
777 %{fsyntax-only:-o %j} %{-param*}";
779 static const char *asm_options =
780 "%a %Y %{c:%W{o*}%{!o*:-o %w%b%O}}%{!c:-o %d%w%u%O}";
782 static const char *invoke_as =
783 #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT
784 "%{!S:-o %|.s |\n as %(asm_options) %|.s %A }";
786 "%{!S:-o %|.s |\n as %(asm_options) %m.s %A }";
789 /* Some compilers have limits on line lengths, and the multilib_select
790 and/or multilib_matches strings can be very long, so we build them at
792 static struct obstack multilib_obstack;
793 static const char *multilib_select;
794 static const char *multilib_matches;
795 static const char *multilib_defaults;
796 static const char *multilib_exclusions;
798 /* Check whether a particular argument is a default argument. */
800 #ifndef MULTILIB_DEFAULTS
801 #define MULTILIB_DEFAULTS { "" }
804 static const char *const multilib_defaults_raw[] = MULTILIB_DEFAULTS;
806 #ifndef DRIVER_SELF_SPECS
807 #define DRIVER_SELF_SPECS ""
810 static const char *const driver_self_specs[] = { DRIVER_SELF_SPECS };
812 #ifndef OPTION_DEFAULT_SPECS
813 #define OPTION_DEFAULT_SPECS { "", "" }
822 static const struct default_spec
823 option_default_specs[] = { OPTION_DEFAULT_SPECS };
827 struct user_specs *next;
828 const char *filename;
831 static struct user_specs *user_specs_head, *user_specs_tail;
833 #ifndef SWITCH_TAKES_ARG
834 #define SWITCH_TAKES_ARG(CHAR) DEFAULT_SWITCH_TAKES_ARG(CHAR)
837 #ifndef WORD_SWITCH_TAKES_ARG
838 #define WORD_SWITCH_TAKES_ARG(STR) DEFAULT_WORD_SWITCH_TAKES_ARG (STR)
841 #ifdef HAVE_TARGET_EXECUTABLE_SUFFIX
842 /* This defines which switches stop a full compilation. */
843 #define DEFAULT_SWITCH_CURTAILS_COMPILATION(CHAR) \
844 ((CHAR) == 'c' || (CHAR) == 'S')
846 #ifndef SWITCH_CURTAILS_COMPILATION
847 #define SWITCH_CURTAILS_COMPILATION(CHAR) \
848 DEFAULT_SWITCH_CURTAILS_COMPILATION(CHAR)
852 /* Record the mapping from file suffixes for compilation specs. */
856 const char *suffix; /* Use this compiler for input files
857 whose names end in this suffix. */
859 const char *spec; /* To use this compiler, run this spec. */
861 const char *cpp_spec; /* If non-NULL, substitute this spec
862 for `%C', rather than the usual
866 /* Pointer to a vector of `struct compiler' that gives the spec for
867 compiling a file, based on its suffix.
868 A file that does not end in any of these suffixes will be passed
869 unchanged to the loader and nothing else will be done to it.
871 An entry containing two 0s is used to terminate the vector.
873 If multiple entries match a file, the last matching one is used. */
875 static struct compiler *compilers;
877 /* Number of entries in `compilers', not counting the null terminator. */
879 static int n_compilers;
881 /* The default list of file name suffixes and their compilation specs. */
883 static const struct compiler default_compilers[] =
885 /* Add lists of suffixes of known languages here. If those languages
886 were not present when we built the driver, we will hit these copies
887 and be given a more meaningful error than "file not used since
888 linking is not done". */
889 {".m", "#Objective-C", 0}, {".mi", "#Objective-C", 0},
890 {".cc", "#C++", 0}, {".cxx", "#C++", 0}, {".cpp", "#C++", 0},
891 {".cp", "#C++", 0}, {".c++", "#C++", 0}, {".C", "#C++", 0},
892 {".CPP", "#C++", 0}, {".ii", "#C++", 0},
893 {".ads", "#Ada", 0}, {".adb", "#Ada", 0},
894 {".f", "#Fortran", 0}, {".for", "#Fortran", 0}, {".fpp", "#Fortran", 0},
895 {".F", "#Fortran", 0}, {".FOR", "#Fortran", 0}, {".FPP", "#Fortran", 0},
896 {".r", "#Ratfor", 0},
897 {".p", "#Pascal", 0}, {".pas", "#Pascal", 0},
898 {".java", "#Java", 0}, {".class", "#Java", 0},
899 {".zip", "#Java", 0}, {".jar", "#Java", 0},
900 /* Next come the entries for C. */
903 /* cc1 has an integrated ISO C preprocessor. We should invoke the
904 external preprocessor if -save-temps is given. */
905 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\
907 %{traditional|ftraditional:\
908 %eGNU C no longer supports -traditional without -E}\
909 %{save-temps|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
910 %(cpp_options) -o %{save-temps:%b.i} %{!save-temps:%g.i} \n\
911 cc1 -fpreprocessed %{save-temps:%b.i} %{!save-temps:%g.i} \
913 %{!save-temps:%{!traditional-cpp:%{!no-integrated-cpp:\
914 cc1 %(cpp_unique_options) %(cc1_options)}}}\
915 %{!fsyntax-only:%(invoke_as)}}}}", 0},
917 "%{!E:%e-E required when input is from standard input}\
918 %(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)", 0},
919 {".h", "@c-header", 0},
921 /* cc1 has an integrated ISO C preprocessor. We should invoke the
922 external preprocessor if -save-temps is given. */
923 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\
925 %{save-temps|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
926 %(cpp_options) -o %{save-temps:%b.i} %{!save-temps:%g.i} \n\
927 cc1 -fpreprocessed %{save-temps:%b.i} %{!save-temps:%g.i} \
929 -o %g.s %{!o*:--output-pch=%i.gch}\
930 %W{o*:--output-pch=%*}%V}\
931 %{!save-temps:%{!traditional-cpp:%{!no-integrated-cpp:\
932 cc1 %(cpp_unique_options) %(cc1_options)\
933 -o %g.s %{!o*:--output-pch=%i.gch}\
934 %W{o*:--output-pch=%*}%V}}}}}}", 0},
935 {".i", "@cpp-output", 0},
937 "%{!M:%{!MM:%{!E:cc1 -fpreprocessed %i %(cc1_options) %{!fsyntax-only:%(invoke_as)}}}}", 0},
938 {".s", "@assembler", 0},
940 "%{!M:%{!MM:%{!E:%{!S:as %(asm_debug) %(asm_options) %i %A }}}}", 0},
941 {".S", "@assembler-with-cpp", 0},
942 {"@assembler-with-cpp",
943 #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT
944 "%(trad_capable_cpp) -lang-asm %(cpp_options)\
945 %{E|M|MM:%(cpp_debug_options)}\
946 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\
947 as %(asm_debug) %(asm_options) %|.s %A }}}}"
949 "%(trad_capable_cpp) -lang-asm %(cpp_options)\
950 %{E|M|MM:%(cpp_debug_options)}\
951 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\
952 as %(asm_debug) %(asm_options) %m.s %A }}}}"
957 /* Mark end of table. */
961 /* Number of elements in default_compilers, not counting the terminator. */
963 static const int n_default_compilers = ARRAY_SIZE (default_compilers) - 1;
965 /* A vector of options to give to the linker.
966 These options are accumulated by %x,
967 and substituted into the linker command with %X. */
968 static int n_linker_options;
969 static char **linker_options;
971 /* A vector of options to give to the assembler.
972 These options are accumulated by -Wa,
973 and substituted into the assembler command with %Y. */
974 static int n_assembler_options;
975 static char **assembler_options;
977 /* A vector of options to give to the preprocessor.
978 These options are accumulated by -Wp,
979 and substituted into the preprocessor command with %Z. */
980 static int n_preprocessor_options;
981 static char **preprocessor_options;
983 /* Define how to map long options into short ones. */
985 /* This structure describes one mapping. */
988 /* The long option's name. */
989 const char *const name;
990 /* The equivalent short option. */
991 const char *const equivalent;
992 /* Argument info. A string of flag chars; NULL equals no options.
993 a => argument required.
994 o => argument optional.
995 j => join argument to equivalent, making one word.
996 * => require other text after NAME as an argument. */
997 const char *const arg_info;
1000 /* This is the table of mappings. Mappings are tried sequentially
1001 for each option encountered; the first one that matches, wins. */
1003 static const struct option_map option_map[] =
1005 {"--all-warnings", "-Wall", 0},
1006 {"--ansi", "-ansi", 0},
1007 {"--assemble", "-S", 0},
1008 {"--assert", "-A", "a"},
1009 {"--classpath", "-fclasspath=", "aj"},
1010 {"--bootclasspath", "-fbootclasspath=", "aj"},
1011 {"--CLASSPATH", "-fclasspath=", "aj"},
1012 {"--comments", "-C", 0},
1013 {"--comments-in-macros", "-CC", 0},
1014 {"--compile", "-c", 0},
1015 {"--debug", "-g", "oj"},
1016 {"--define-macro", "-D", "aj"},
1017 {"--dependencies", "-M", 0},
1018 {"--dump", "-d", "a"},
1019 {"--dumpbase", "-dumpbase", "a"},
1020 {"--entry", "-e", 0},
1021 {"--extra-warnings", "-W", 0},
1022 {"--for-assembler", "-Wa", "a"},
1023 {"--for-linker", "-Xlinker", "a"},
1024 {"--force-link", "-u", "a"},
1025 {"--imacros", "-imacros", "a"},
1026 {"--include", "-include", "a"},
1027 {"--include-barrier", "-I-", 0},
1028 {"--include-directory", "-I", "aj"},
1029 {"--include-directory-after", "-idirafter", "a"},
1030 {"--include-prefix", "-iprefix", "a"},
1031 {"--include-with-prefix", "-iwithprefix", "a"},
1032 {"--include-with-prefix-before", "-iwithprefixbefore", "a"},
1033 {"--include-with-prefix-after", "-iwithprefix", "a"},
1034 {"--language", "-x", "a"},
1035 {"--library-directory", "-L", "a"},
1036 {"--machine", "-m", "aj"},
1037 {"--machine-", "-m", "*j"},
1038 {"--no-integrated-cpp", "-no-integrated-cpp", 0},
1039 {"--no-line-commands", "-P", 0},
1040 {"--no-precompiled-includes", "-noprecomp", 0},
1041 {"--no-standard-includes", "-nostdinc", 0},
1042 {"--no-standard-libraries", "-nostdlib", 0},
1043 {"--no-warnings", "-w", 0},
1044 {"--optimize", "-O", "oj"},
1045 {"--output", "-o", "a"},
1046 {"--output-class-directory", "-foutput-class-dir=", "ja"},
1047 {"--param", "--param", "a"},
1048 {"--pedantic", "-pedantic", 0},
1049 {"--pedantic-errors", "-pedantic-errors", 0},
1050 {"--pie", "-pie", 0},
1051 {"--pipe", "-pipe", 0},
1052 {"--prefix", "-B", "a"},
1053 {"--preprocess", "-E", 0},
1054 {"--print-search-dirs", "-print-search-dirs", 0},
1055 {"--print-file-name", "-print-file-name=", "aj"},
1056 {"--print-libgcc-file-name", "-print-libgcc-file-name", 0},
1057 {"--print-missing-file-dependencies", "-MG", 0},
1058 {"--print-multi-lib", "-print-multi-lib", 0},
1059 {"--print-multi-directory", "-print-multi-directory", 0},
1060 {"--print-multi-os-directory", "-print-multi-os-directory", 0},
1061 {"--print-prog-name", "-print-prog-name=", "aj"},
1062 {"--profile", "-p", 0},
1063 {"--profile-blocks", "-a", 0},
1064 {"--quiet", "-q", 0},
1065 {"--resource", "-fcompile-resource=", "aj"},
1066 {"--save-temps", "-save-temps", 0},
1067 {"--shared", "-shared", 0},
1068 {"--silent", "-q", 0},
1069 {"--specs", "-specs=", "aj"},
1070 {"--static", "-static", 0},
1071 {"--std", "-std=", "aj"},
1072 {"--symbolic", "-symbolic", 0},
1073 {"--time", "-time", 0},
1074 {"--trace-includes", "-H", 0},
1075 {"--traditional", "-traditional", 0},
1076 {"--traditional-cpp", "-traditional-cpp", 0},
1077 {"--trigraphs", "-trigraphs", 0},
1078 {"--undefine-macro", "-U", "aj"},
1079 {"--user-dependencies", "-MM", 0},
1080 {"--verbose", "-v", 0},
1081 {"--warn-", "-W", "*j"},
1082 {"--write-dependencies", "-MD", 0},
1083 {"--write-user-dependencies", "-MMD", 0},
1088 #ifdef TARGET_OPTION_TRANSLATE_TABLE
1089 static const struct {
1090 const char *const option_found;
1091 const char *const replacements;
1092 } target_option_translations[] =
1094 TARGET_OPTION_TRANSLATE_TABLE,
1099 /* Translate the options described by *ARGCP and *ARGVP.
1100 Make a new vector and store it back in *ARGVP,
1101 and store its length in *ARGVC. */
1104 translate_options (int *argcp, const char *const **argvp)
1108 const char *const *argv = *argvp;
1109 int newvsize = (argc + 2) * 2 * sizeof (const char *);
1110 const char **newv = xmalloc (newvsize);
1114 newv[newindex++] = argv[i++];
1118 #ifdef TARGET_OPTION_TRANSLATE_TABLE
1122 target_option_translations[tott_idx].option_found;
1125 if (strcmp (target_option_translations[tott_idx].option_found,
1132 for (sp = target_option_translations[tott_idx].replacements;
1139 newvsize += spaces * sizeof (const char *);
1140 newv = xrealloc (newv, newvsize);
1142 sp = target_option_translations[tott_idx].replacements;
1151 newv[newindex++] = np;
1152 while (*np != ' ' && *np)
1163 if (target_option_translations[tott_idx].option_found)
1167 /* Translate -- options. */
1168 if (argv[i][0] == '-' && argv[i][1] == '-')
1171 /* Find a mapping that applies to this option. */
1172 for (j = 0; j < ARRAY_SIZE (option_map); j++)
1174 size_t optlen = strlen (option_map[j].name);
1175 size_t arglen = strlen (argv[i]);
1176 size_t complen = arglen > optlen ? optlen : arglen;
1177 const char *arginfo = option_map[j].arg_info;
1182 if (!strncmp (argv[i], option_map[j].name, complen))
1184 const char *arg = 0;
1186 if (arglen < optlen)
1189 for (k = j + 1; k < ARRAY_SIZE (option_map); k++)
1190 if (strlen (option_map[k].name) >= arglen
1191 && !strncmp (argv[i], option_map[k].name, arglen))
1193 error ("ambiguous abbreviation %s", argv[i]);
1197 if (k != ARRAY_SIZE (option_map))
1201 if (arglen > optlen)
1203 /* If the option has an argument, accept that. */
1204 if (argv[i][optlen] == '=')
1205 arg = argv[i] + optlen + 1;
1207 /* If this mapping requires extra text at end of name,
1208 accept that as "argument". */
1209 else if (strchr (arginfo, '*') != 0)
1210 arg = argv[i] + optlen;
1212 /* Otherwise, extra text at end means mismatch.
1213 Try other mappings. */
1218 else if (strchr (arginfo, '*') != 0)
1220 error ("incomplete `%s' option", option_map[j].name);
1224 /* Handle arguments. */
1225 if (strchr (arginfo, 'a') != 0)
1231 error ("missing argument to `%s' option",
1232 option_map[j].name);
1239 else if (strchr (arginfo, '*') != 0)
1241 else if (strchr (arginfo, 'o') == 0)
1244 error ("extraneous argument to `%s' option",
1245 option_map[j].name);
1249 /* Store the translation as one argv elt or as two. */
1250 if (arg != 0 && strchr (arginfo, 'j') != 0)
1251 newv[newindex++] = concat (option_map[j].equivalent, arg,
1255 newv[newindex++] = option_map[j].equivalent;
1256 newv[newindex++] = arg;
1259 newv[newindex++] = option_map[j].equivalent;
1267 /* Handle old-fashioned options--just copy them through,
1268 with their arguments. */
1269 else if (argv[i][0] == '-')
1271 const char *p = argv[i] + 1;
1275 if (SWITCH_TAKES_ARG (c) > (p[1] != 0))
1276 nskip += SWITCH_TAKES_ARG (c) - (p[1] != 0);
1277 else if (WORD_SWITCH_TAKES_ARG (p))
1278 nskip += WORD_SWITCH_TAKES_ARG (p);
1279 else if ((c == 'B' || c == 'b' || c == 'x')
1282 else if (! strcmp (p, "Xlinker"))
1284 else if (! strcmp (p, "Xpreprocessor"))
1286 else if (! strcmp (p, "Xassembler"))
1289 /* Watch out for an option at the end of the command line that
1290 is missing arguments, and avoid skipping past the end of the
1292 if (nskip + i > argc)
1297 newv[newindex++] = argv[i++];
1302 /* Ordinary operands, or +e options. */
1303 newv[newindex++] = argv[i++];
1313 skip_whitespace (char *p)
1317 /* A fully-blank line is a delimiter in the SPEC file and shouldn't
1318 be considered whitespace. */
1319 if (p[0] == '\n' && p[1] == '\n' && p[2] == '\n')
1321 else if (*p == '\n' || *p == ' ' || *p == '\t')
1335 /* Structures to keep track of prefixes to try when looking for files. */
1339 const char *prefix; /* String to prepend to the path. */
1340 struct prefix_list *next; /* Next in linked list. */
1341 int require_machine_suffix; /* Don't use without machine_suffix. */
1342 /* 2 means try both machine_suffix and just_machine_suffix. */
1343 int *used_flag_ptr; /* 1 if a file was found with this prefix. */
1344 int priority; /* Sort key - priority within list. */
1345 int os_multilib; /* 1 if OS multilib scheme should be used,
1346 0 for GCC multilib scheme. */
1351 struct prefix_list *plist; /* List of prefixes to try */
1352 int max_len; /* Max length of a prefix in PLIST */
1353 const char *name; /* Name of this list (used in config stuff) */
1356 /* List of prefixes to try when looking for executables. */
1358 static struct path_prefix exec_prefixes = { 0, 0, "exec" };
1360 /* List of prefixes to try when looking for startup (crt0) files. */
1362 static struct path_prefix startfile_prefixes = { 0, 0, "startfile" };
1364 /* List of prefixes to try when looking for include files. */
1366 static struct path_prefix include_prefixes = { 0, 0, "include" };
1368 /* Suffix to attach to directories searched for commands.
1369 This looks like `MACHINE/VERSION/'. */
1371 static const char *machine_suffix = 0;
1373 /* Suffix to attach to directories searched for commands.
1374 This is just `MACHINE/'. */
1376 static const char *just_machine_suffix = 0;
1378 /* Adjusted value of GCC_EXEC_PREFIX envvar. */
1380 static const char *gcc_exec_prefix;
1382 /* Adjusted value of standard_libexec_prefix. */
1384 static const char *gcc_libexec_prefix;
1386 /* Default prefixes to attach to command names. */
1388 #ifdef CROSS_COMPILE /* Don't use these prefixes for a cross compiler. */
1389 #undef MD_EXEC_PREFIX
1390 #undef MD_STARTFILE_PREFIX
1391 #undef MD_STARTFILE_PREFIX_1
1394 /* If no prefixes defined, use the null string, which will disable them. */
1395 #ifndef MD_EXEC_PREFIX
1396 #define MD_EXEC_PREFIX ""
1398 #ifndef MD_STARTFILE_PREFIX
1399 #define MD_STARTFILE_PREFIX ""
1401 #ifndef MD_STARTFILE_PREFIX_1
1402 #define MD_STARTFILE_PREFIX_1 ""
1405 static const char *const standard_exec_prefix = STANDARD_EXEC_PREFIX;
1406 static const char *const standard_exec_prefix_1 = "/usr/libexec/gcc/";
1407 static const char *const standard_exec_prefix_2 = "/usr/lib/gcc/";
1408 static const char *md_exec_prefix = MD_EXEC_PREFIX;
1410 static const char *md_startfile_prefix = MD_STARTFILE_PREFIX;
1411 static const char *md_startfile_prefix_1 = MD_STARTFILE_PREFIX_1;
1412 static const char *const standard_startfile_prefix = STANDARD_STARTFILE_PREFIX;
1413 static const char *const standard_startfile_prefix_1 = "/lib/";
1414 static const char *const standard_startfile_prefix_2 = "/usr/lib/";
1416 static const char *const tooldir_base_prefix = TOOLDIR_BASE_PREFIX;
1417 static const char *tooldir_prefix;
1419 static const char *const standard_bindir_prefix = STANDARD_BINDIR_PREFIX;
1421 static const char *standard_libexec_prefix = STANDARD_LIBEXEC_PREFIX;
1423 /* Subdirectory to use for locating libraries. Set by
1424 set_multilib_dir based on the compilation options. */
1426 static const char *multilib_dir;
1428 /* Subdirectory to use for locating libraries in OS conventions. Set by
1429 set_multilib_dir based on the compilation options. */
1431 static const char *multilib_os_dir;
1433 /* Structure to keep track of the specs that have been defined so far.
1434 These are accessed using %(specname) or %[specname] in a compiler
1439 /* The following 2 fields must be first */
1440 /* to allow EXTRA_SPECS to be initialized */
1441 const char *name; /* name of the spec. */
1442 const char *ptr; /* available ptr if no static pointer */
1444 /* The following fields are not initialized */
1445 /* by EXTRA_SPECS */
1446 const char **ptr_spec; /* pointer to the spec itself. */
1447 struct spec_list *next; /* Next spec in linked list. */
1448 int name_len; /* length of the name */
1449 int alloc_p; /* whether string was allocated */
1452 #define INIT_STATIC_SPEC(NAME,PTR) \
1453 { NAME, NULL, PTR, (struct spec_list *) 0, sizeof (NAME) - 1, 0 }
1455 /* List of statically defined specs. */
1456 static struct spec_list static_specs[] =
1458 INIT_STATIC_SPEC ("asm", &asm_spec),
1459 INIT_STATIC_SPEC ("asm_debug", &asm_debug),
1460 INIT_STATIC_SPEC ("asm_final", &asm_final_spec),
1461 INIT_STATIC_SPEC ("asm_options", &asm_options),
1462 INIT_STATIC_SPEC ("invoke_as", &invoke_as),
1463 INIT_STATIC_SPEC ("cpp", &cpp_spec),
1464 INIT_STATIC_SPEC ("cpp_options", &cpp_options),
1465 INIT_STATIC_SPEC ("cpp_debug_options", &cpp_debug_options),
1466 INIT_STATIC_SPEC ("cpp_unique_options", &cpp_unique_options),
1467 INIT_STATIC_SPEC ("trad_capable_cpp", &trad_capable_cpp),
1468 INIT_STATIC_SPEC ("cc1", &cc1_spec),
1469 INIT_STATIC_SPEC ("cc1_options", &cc1_options),
1470 INIT_STATIC_SPEC ("cc1plus", &cc1plus_spec),
1471 INIT_STATIC_SPEC ("link_gcc_c_sequence", &link_gcc_c_sequence_spec),
1472 INIT_STATIC_SPEC ("endfile", &endfile_spec),
1473 INIT_STATIC_SPEC ("link", &link_spec),
1474 INIT_STATIC_SPEC ("lib", &lib_spec),
1475 INIT_STATIC_SPEC ("libgcc", &libgcc_spec),
1476 INIT_STATIC_SPEC ("startfile", &startfile_spec),
1477 INIT_STATIC_SPEC ("switches_need_spaces", &switches_need_spaces),
1478 INIT_STATIC_SPEC ("cross_compile", &cross_compile),
1479 INIT_STATIC_SPEC ("version", &compiler_version),
1480 INIT_STATIC_SPEC ("multilib", &multilib_select),
1481 INIT_STATIC_SPEC ("multilib_defaults", &multilib_defaults),
1482 INIT_STATIC_SPEC ("multilib_extra", &multilib_extra),
1483 INIT_STATIC_SPEC ("multilib_matches", &multilib_matches),
1484 INIT_STATIC_SPEC ("multilib_exclusions", &multilib_exclusions),
1485 INIT_STATIC_SPEC ("multilib_options", &multilib_options),
1486 INIT_STATIC_SPEC ("linker", &linker_name_spec),
1487 INIT_STATIC_SPEC ("link_libgcc", &link_libgcc_spec),
1488 INIT_STATIC_SPEC ("md_exec_prefix", &md_exec_prefix),
1489 INIT_STATIC_SPEC ("md_startfile_prefix", &md_startfile_prefix),
1490 INIT_STATIC_SPEC ("md_startfile_prefix_1", &md_startfile_prefix_1),
1491 INIT_STATIC_SPEC ("startfile_prefix_spec", &startfile_prefix_spec),
1492 INIT_STATIC_SPEC ("sysroot_suffix_spec", &sysroot_suffix_spec),
1493 INIT_STATIC_SPEC ("sysroot_hdrs_suffix_spec", &sysroot_hdrs_suffix_spec),
1496 #ifdef EXTRA_SPECS /* additional specs needed */
1497 /* Structure to keep track of just the first two args of a spec_list.
1498 That is all that the EXTRA_SPECS macro gives us. */
1501 const char *const name;
1502 const char *const ptr;
1505 static const struct spec_list_1 extra_specs_1[] = { EXTRA_SPECS };
1506 static struct spec_list *extra_specs = (struct spec_list *) 0;
1509 /* List of dynamically allocates specs that have been defined so far. */
1511 static struct spec_list *specs = (struct spec_list *) 0;
1513 /* List of static spec functions. */
1515 static const struct spec_function static_spec_functions[] =
1517 { "if-exists", if_exists_spec_function },
1518 { "if-exists-else", if_exists_else_spec_function },
1522 static int processing_spec_function;
1524 /* Add appropriate libgcc specs to OBSTACK, taking into account
1525 various permutations of -shared-libgcc, -shared, and such. */
1527 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
1529 init_gcc_specs (struct obstack *obstack, const char *shared_name,
1530 const char *static_name, const char *eh_name)
1534 buf = concat ("%{static|static-libgcc:", static_name, " ", eh_name,
1535 "}%{!static:%{!static-libgcc:",
1536 #ifdef HAVE_LD_AS_NEEDED
1537 "%{!shared-libgcc:", static_name,
1538 " --as-needed ", shared_name, " --no-as-needed}"
1539 "%{shared-libgcc:", shared_name, "%{!shared: ", static_name,
1542 "%{!shared:%{!shared-libgcc:", static_name, " ",
1543 eh_name, "}%{shared-libgcc:", shared_name, " ",
1544 static_name, "}}%{shared:",
1546 "%{shared-libgcc:", shared_name,
1547 "}%{!shared-libgcc:", static_name, "}",
1554 obstack_grow (obstack, buf, strlen (buf));
1557 #endif /* ENABLE_SHARED_LIBGCC */
1559 /* Initialize the specs lookup routines. */
1564 struct spec_list *next = (struct spec_list *) 0;
1565 struct spec_list *sl = (struct spec_list *) 0;
1569 return; /* Already initialized. */
1572 notice ("Using built-in specs.\n");
1575 extra_specs = xcalloc (sizeof (struct spec_list),
1576 ARRAY_SIZE (extra_specs_1));
1578 for (i = ARRAY_SIZE (extra_specs_1) - 1; i >= 0; i--)
1580 sl = &extra_specs[i];
1581 sl->name = extra_specs_1[i].name;
1582 sl->ptr = extra_specs_1[i].ptr;
1584 sl->name_len = strlen (sl->name);
1585 sl->ptr_spec = &sl->ptr;
1590 /* Initialize here, not in definition. The IRIX 6 O32 cc sometimes chokes
1591 on ?: in file-scope variable initializations. */
1592 asm_debug = ASM_DEBUG_SPEC;
1594 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--)
1596 sl = &static_specs[i];
1601 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
1602 /* ??? If neither -shared-libgcc nor --static-libgcc was
1603 seen, then we should be making an educated guess. Some proposed
1604 heuristics for ELF include:
1606 (1) If "-Wl,--export-dynamic", then it's a fair bet that the
1607 program will be doing dynamic loading, which will likely
1608 need the shared libgcc.
1610 (2) If "-ldl", then it's also a fair bet that we're doing
1613 (3) For each ET_DYN we're linking against (either through -lfoo
1614 or /some/path/foo.so), check to see whether it or one of
1615 its dependencies depends on a shared libgcc.
1619 If the runtime is fixed to look for program headers instead
1620 of calling __register_frame_info at all, for each object,
1621 use the shared libgcc if any EH symbol referenced.
1623 If crtstuff is fixed to not invoke __register_frame_info
1624 automatically, for each object, use the shared libgcc if
1625 any non-empty unwind section found.
1627 Doing any of this probably requires invoking an external program to
1628 do the actual object file scanning. */
1630 const char *p = libgcc_spec;
1633 /* Transform the extant libgcc_spec into one that uses the shared libgcc
1634 when given the proper command line arguments. */
1637 if (in_sep && *p == '-' && strncmp (p, "-lgcc", 5) == 0)
1639 init_gcc_specs (&obstack,
1640 #ifdef NO_SHARED_LIBGCC_MULTILIB
1648 #ifdef USE_LIBUNWIND_EXCEPTIONS
1656 else if (in_sep && *p == 'l' && strncmp (p, "libgcc.a%s", 10) == 0)
1658 /* Ug. We don't know shared library extensions. Hope that
1659 systems that use this form don't do shared libraries. */
1660 init_gcc_specs (&obstack,
1661 #ifdef NO_SHARED_LIBGCC_MULTILIB
1669 #ifdef USE_LIBUNWIND_EXCEPTIONS
1678 obstack_1grow (&obstack, *p);
1679 in_sep = (*p == ' ');
1684 obstack_1grow (&obstack, '\0');
1685 libgcc_spec = obstack_finish (&obstack);
1688 #ifdef USE_AS_TRADITIONAL_FORMAT
1689 /* Prepend "--traditional-format" to whatever asm_spec we had before. */
1691 static const char tf[] = "--traditional-format ";
1692 obstack_grow (&obstack, tf, sizeof(tf) - 1);
1693 obstack_grow0 (&obstack, asm_spec, strlen (asm_spec));
1694 asm_spec = obstack_finish (&obstack);
1698 /* Prepend LINK_EH_SPEC to whatever link_spec we had before. */
1699 obstack_grow (&obstack, LINK_EH_SPEC, sizeof(LINK_EH_SPEC) - 1);
1700 obstack_grow0 (&obstack, link_spec, strlen (link_spec));
1701 link_spec = obstack_finish (&obstack);
1707 /* Change the value of spec NAME to SPEC. If SPEC is empty, then the spec is
1708 removed; If the spec starts with a + then SPEC is added to the end of the
1712 set_spec (const char *name, const char *spec)
1714 struct spec_list *sl;
1715 const char *old_spec;
1716 int name_len = strlen (name);
1719 /* If this is the first call, initialize the statically allocated specs. */
1722 struct spec_list *next = (struct spec_list *) 0;
1723 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--)
1725 sl = &static_specs[i];
1732 /* See if the spec already exists. */
1733 for (sl = specs; sl; sl = sl->next)
1734 if (name_len == sl->name_len && !strcmp (sl->name, name))
1739 /* Not found - make it. */
1740 sl = xmalloc (sizeof (struct spec_list));
1741 sl->name = xstrdup (name);
1742 sl->name_len = name_len;
1743 sl->ptr_spec = &sl->ptr;
1745 *(sl->ptr_spec) = "";
1750 old_spec = *(sl->ptr_spec);
1751 *(sl->ptr_spec) = ((spec[0] == '+' && ISSPACE ((unsigned char)spec[1]))
1752 ? concat (old_spec, spec + 1, NULL)
1757 notice ("Setting spec %s to '%s'\n\n", name, *(sl->ptr_spec));
1760 /* Free the old spec. */
1761 if (old_spec && sl->alloc_p)
1762 free ((void *) old_spec);
1767 /* Accumulate a command (program name and args), and run it. */
1769 /* Vector of pointers to arguments in the current line of specifications. */
1771 static const char **argbuf;
1773 /* Number of elements allocated in argbuf. */
1775 static int argbuf_length;
1777 /* Number of elements in argbuf currently in use (containing args). */
1779 static int argbuf_index;
1781 /* This is the list of suffixes and codes (%g/%u/%U/%j) and the associated
1782 temp file. If the HOST_BIT_BUCKET is used for %j, no entry is made for
1785 static struct temp_name {
1786 const char *suffix; /* suffix associated with the code. */
1787 int length; /* strlen (suffix). */
1788 int unique; /* Indicates whether %g or %u/%U was used. */
1789 const char *filename; /* associated filename. */
1790 int filename_length; /* strlen (filename). */
1791 struct temp_name *next;
1794 /* Number of commands executed so far. */
1796 static int execution_count;
1798 /* Number of commands that exited with a signal. */
1800 static int signal_count;
1802 /* Name with which this program was invoked. */
1804 static const char *programname;
1806 /* Allocate the argument vector. */
1812 argbuf = xmalloc (argbuf_length * sizeof (const char *));
1815 /* Clear out the vector of arguments (after a command is executed). */
1823 /* Add one argument to the vector at the end.
1824 This is done when a space is seen or at the end of the line.
1825 If DELETE_ALWAYS is nonzero, the arg is a filename
1826 and the file should be deleted eventually.
1827 If DELETE_FAILURE is nonzero, the arg is a filename
1828 and the file should be deleted if this compilation fails. */
1831 store_arg (const char *arg, int delete_always, int delete_failure)
1833 if (argbuf_index + 1 == argbuf_length)
1834 argbuf = xrealloc (argbuf, (argbuf_length *= 2) * sizeof (const char *));
1836 argbuf[argbuf_index++] = arg;
1837 argbuf[argbuf_index] = 0;
1839 if (delete_always || delete_failure)
1840 record_temp_file (arg, delete_always, delete_failure);
1843 /* Load specs from a file name named FILENAME, replacing occurrences of
1844 various different types of line-endings, \r\n, \n\r and just \r, with
1848 load_specs (const char *filename)
1852 struct stat statbuf;
1859 notice ("Reading specs from %s\n", filename);
1861 /* Open and stat the file. */
1862 desc = open (filename, O_RDONLY, 0);
1864 pfatal_with_name (filename);
1865 if (stat (filename, &statbuf) < 0)
1866 pfatal_with_name (filename);
1868 /* Read contents of file into BUFFER. */
1869 buffer = xmalloc ((unsigned) statbuf.st_size + 1);
1870 readlen = read (desc, buffer, (unsigned) statbuf.st_size);
1872 pfatal_with_name (filename);
1873 buffer[readlen] = 0;
1876 specs = xmalloc (readlen + 1);
1878 for (buffer_p = buffer; buffer_p && *buffer_p; buffer_p++)
1884 if (buffer_p > buffer && *(buffer_p - 1) == '\n') /* \n\r */
1886 else if (*(buffer_p + 1) == '\n') /* \r\n */
1900 /* Read compilation specs from a file named FILENAME,
1901 replacing the default ones.
1903 A suffix which starts with `*' is a definition for
1904 one of the machine-specific sub-specs. The "suffix" should be
1905 *asm, *cc1, *cpp, *link, *startfile, etc.
1906 The corresponding spec is stored in asm_spec, etc.,
1907 rather than in the `compilers' vector.
1909 Anything invalid in the file is a fatal error. */
1912 read_specs (const char *filename, int main_p)
1917 buffer = load_specs (filename);
1919 /* Scan BUFFER for specs, putting them in the vector. */
1925 char *in, *out, *p1, *p2, *p3;
1927 /* Advance P in BUFFER to the next nonblank nocomment line. */
1928 p = skip_whitespace (p);
1932 /* Is this a special command that starts with '%'? */
1933 /* Don't allow this for the main specs file, since it would
1934 encourage people to overwrite it. */
1935 if (*p == '%' && !main_p)
1938 while (*p && *p != '\n')
1944 if (!strncmp (p1, "%include", sizeof ("%include") - 1)
1945 && (p1[sizeof "%include" - 1] == ' '
1946 || p1[sizeof "%include" - 1] == '\t'))
1950 p1 += sizeof ("%include");
1951 while (*p1 == ' ' || *p1 == '\t')
1954 if (*p1++ != '<' || p[-2] != '>')
1955 fatal ("specs %%include syntax malformed after %ld characters",
1956 (long) (p1 - buffer + 1));
1959 new_filename = find_a_file (&startfile_prefixes, p1, R_OK, 0);
1960 read_specs (new_filename ? new_filename : p1, FALSE);
1963 else if (!strncmp (p1, "%include_noerr", sizeof "%include_noerr" - 1)
1964 && (p1[sizeof "%include_noerr" - 1] == ' '
1965 || p1[sizeof "%include_noerr" - 1] == '\t'))
1969 p1 += sizeof "%include_noerr";
1970 while (*p1 == ' ' || *p1 == '\t')
1973 if (*p1++ != '<' || p[-2] != '>')
1974 fatal ("specs %%include syntax malformed after %ld characters",
1975 (long) (p1 - buffer + 1));
1978 new_filename = find_a_file (&startfile_prefixes, p1, R_OK, 0);
1980 read_specs (new_filename, FALSE);
1981 else if (verbose_flag)
1982 notice ("could not find specs file %s\n", p1);
1985 else if (!strncmp (p1, "%rename", sizeof "%rename" - 1)
1986 && (p1[sizeof "%rename" - 1] == ' '
1987 || p1[sizeof "%rename" - 1] == '\t'))
1990 struct spec_list *sl;
1991 struct spec_list *newsl;
1993 /* Get original name. */
1994 p1 += sizeof "%rename";
1995 while (*p1 == ' ' || *p1 == '\t')
1998 if (! ISALPHA ((unsigned char) *p1))
1999 fatal ("specs %%rename syntax malformed after %ld characters",
2000 (long) (p1 - buffer));
2003 while (*p2 && !ISSPACE ((unsigned char) *p2))
2006 if (*p2 != ' ' && *p2 != '\t')
2007 fatal ("specs %%rename syntax malformed after %ld characters",
2008 (long) (p2 - buffer));
2012 while (*p2 == ' ' || *p2 == '\t')
2015 if (! ISALPHA ((unsigned char) *p2))
2016 fatal ("specs %%rename syntax malformed after %ld characters",
2017 (long) (p2 - buffer));
2019 /* Get new spec name. */
2021 while (*p3 && !ISSPACE ((unsigned char) *p3))
2025 fatal ("specs %%rename syntax malformed after %ld characters",
2026 (long) (p3 - buffer));
2029 for (sl = specs; sl; sl = sl->next)
2030 if (name_len == sl->name_len && !strcmp (sl->name, p1))
2034 fatal ("specs %s spec was not found to be renamed", p1);
2036 if (strcmp (p1, p2) == 0)
2039 for (newsl = specs; newsl; newsl = newsl->next)
2040 if (strcmp (newsl->name, p2) == 0)
2041 fatal ("%s: attempt to rename spec '%s' to already defined spec '%s'",
2046 notice ("rename spec %s to %s\n", p1, p2);
2048 notice ("spec is '%s'\n\n", *(sl->ptr_spec));
2052 set_spec (p2, *(sl->ptr_spec));
2054 free ((void *) *(sl->ptr_spec));
2056 *(sl->ptr_spec) = "";
2061 fatal ("specs unknown %% command after %ld characters",
2062 (long) (p1 - buffer));
2065 /* Find the colon that should end the suffix. */
2067 while (*p1 && *p1 != ':' && *p1 != '\n')
2070 /* The colon shouldn't be missing. */
2072 fatal ("specs file malformed after %ld characters",
2073 (long) (p1 - buffer));
2075 /* Skip back over trailing whitespace. */
2077 while (p2 > buffer && (p2[-1] == ' ' || p2[-1] == '\t'))
2080 /* Copy the suffix to a string. */
2081 suffix = save_string (p, p2 - p);
2082 /* Find the next line. */
2083 p = skip_whitespace (p1 + 1);
2085 fatal ("specs file malformed after %ld characters",
2086 (long) (p - buffer));
2089 /* Find next blank line or end of string. */
2090 while (*p1 && !(*p1 == '\n' && (p1[1] == '\n' || p1[1] == '\0')))
2093 /* Specs end at the blank line and do not include the newline. */
2094 spec = save_string (p, p1 - p);
2097 /* Delete backslash-newline sequences from the spec. */
2102 if (in[0] == '\\' && in[1] == '\n')
2104 else if (in[0] == '#')
2105 while (*in && *in != '\n')
2113 if (suffix[0] == '*')
2115 if (! strcmp (suffix, "*link_command"))
2116 link_command_spec = spec;
2118 set_spec (suffix + 1, spec);
2122 /* Add this pair to the vector. */
2124 = xrealloc (compilers,
2125 (n_compilers + 2) * sizeof (struct compiler));
2127 compilers[n_compilers].suffix = suffix;
2128 compilers[n_compilers].spec = spec;
2130 memset (&compilers[n_compilers], 0, sizeof compilers[n_compilers]);
2134 link_command_spec = spec;
2137 if (link_command_spec == 0)
2138 fatal ("spec file has no spec for linking");
2141 /* Record the names of temporary files we tell compilers to write,
2142 and delete them at the end of the run. */
2144 /* This is the common prefix we use to make temp file names.
2145 It is chosen once for each run of this program.
2146 It is substituted into a spec by %g or %j.
2147 Thus, all temp file names contain this prefix.
2148 In practice, all temp file names start with this prefix.
2150 This prefix comes from the envvar TMPDIR if it is defined;
2151 otherwise, from the P_tmpdir macro if that is defined;
2152 otherwise, in /usr/tmp or /tmp;
2153 or finally the current directory if all else fails. */
2155 static const char *temp_filename;
2157 /* Length of the prefix. */
2159 static int temp_filename_length;
2161 /* Define the list of temporary files to delete. */
2166 struct temp_file *next;
2169 /* Queue of files to delete on success or failure of compilation. */
2170 static struct temp_file *always_delete_queue;
2171 /* Queue of files to delete on failure of compilation. */
2172 static struct temp_file *failure_delete_queue;
2174 /* Record FILENAME as a file to be deleted automatically.
2175 ALWAYS_DELETE nonzero means delete it if all compilation succeeds;
2176 otherwise delete it in any case.
2177 FAIL_DELETE nonzero means delete it if a compilation step fails;
2178 otherwise delete it in any case. */
2181 record_temp_file (const char *filename, int always_delete, int fail_delete)
2183 char *const name = xstrdup (filename);
2187 struct temp_file *temp;
2188 for (temp = always_delete_queue; temp; temp = temp->next)
2189 if (! strcmp (name, temp->name))
2192 temp = xmalloc (sizeof (struct temp_file));
2193 temp->next = always_delete_queue;
2195 always_delete_queue = temp;
2202 struct temp_file *temp;
2203 for (temp = failure_delete_queue; temp; temp = temp->next)
2204 if (! strcmp (name, temp->name))
2207 temp = xmalloc (sizeof (struct temp_file));
2208 temp->next = failure_delete_queue;
2210 failure_delete_queue = temp;
2216 /* Delete all the temporary files whose names we previously recorded. */
2219 delete_if_ordinary (const char *name)
2225 printf ("Delete %s? (y or n) ", name);
2229 while ((c = getchar ()) != '\n' && c != EOF)
2232 if (i == 'y' || i == 'Y')
2234 if (stat (name, &st) >= 0 && S_ISREG (st.st_mode))
2235 if (unlink (name) < 0)
2237 perror_with_name (name);
2241 delete_temp_files (void)
2243 struct temp_file *temp;
2245 for (temp = always_delete_queue; temp; temp = temp->next)
2246 delete_if_ordinary (temp->name);
2247 always_delete_queue = 0;
2250 /* Delete all the files to be deleted on error. */
2253 delete_failure_queue (void)
2255 struct temp_file *temp;
2257 for (temp = failure_delete_queue; temp; temp = temp->next)
2258 delete_if_ordinary (temp->name);
2262 clear_failure_queue (void)
2264 failure_delete_queue = 0;
2267 /* Build a list of search directories from PATHS.
2268 PREFIX is a string to prepend to the list.
2269 If CHECK_DIR_P is nonzero we ensure the directory exists.
2270 This is used mostly by putenv_from_prefixes so we use `collect_obstack'.
2271 It is also used by the --print-search-dirs flag. */
2274 build_search_list (struct path_prefix *paths, const char *prefix,
2277 int suffix_len = (machine_suffix) ? strlen (machine_suffix) : 0;
2279 = (just_machine_suffix) ? strlen (just_machine_suffix) : 0;
2280 int first_time = TRUE;
2281 struct prefix_list *pprefix;
2283 obstack_grow (&collect_obstack, prefix, strlen (prefix));
2284 obstack_1grow (&collect_obstack, '=');
2286 for (pprefix = paths->plist; pprefix != 0; pprefix = pprefix->next)
2288 int len = strlen (pprefix->prefix);
2292 || is_directory (pprefix->prefix, machine_suffix, 0)))
2295 obstack_1grow (&collect_obstack, PATH_SEPARATOR);
2298 obstack_grow (&collect_obstack, pprefix->prefix, len);
2299 obstack_grow (&collect_obstack, machine_suffix, suffix_len);
2302 if (just_machine_suffix
2303 && pprefix->require_machine_suffix == 2
2305 || is_directory (pprefix->prefix, just_machine_suffix, 0)))
2308 obstack_1grow (&collect_obstack, PATH_SEPARATOR);
2311 obstack_grow (&collect_obstack, pprefix->prefix, len);
2312 obstack_grow (&collect_obstack, just_machine_suffix,
2316 if (! pprefix->require_machine_suffix)
2319 obstack_1grow (&collect_obstack, PATH_SEPARATOR);
2322 obstack_grow (&collect_obstack, pprefix->prefix, len);
2326 obstack_1grow (&collect_obstack, '\0');
2327 return obstack_finish (&collect_obstack);
2330 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
2334 putenv_from_prefixes (struct path_prefix *paths, const char *env_var)
2336 putenv (build_search_list (paths, env_var, 1));
2339 /* Check whether NAME can be accessed in MODE. This is like access,
2340 except that it never considers directories to be executable. */
2343 access_check (const char *name, int mode)
2349 if (stat (name, &st) < 0
2350 || S_ISDIR (st.st_mode))
2354 return access (name, mode);
2357 /* Search for NAME using the prefix list PREFIXES. MODE is passed to
2358 access to check permissions.
2359 Return 0 if not found, otherwise return its name, allocated with malloc. */
2362 find_a_file (struct path_prefix *pprefix, const char *name, int mode,
2366 const char *const file_suffix =
2367 ((mode & X_OK) != 0 ? HOST_EXECUTABLE_SUFFIX : "");
2368 struct prefix_list *pl;
2369 int len = pprefix->max_len + strlen (name) + strlen (file_suffix) + 1;
2370 const char *multilib_name, *multilib_os_name;
2372 #ifdef DEFAULT_ASSEMBLER
2373 if (! strcmp (name, "as") && access (DEFAULT_ASSEMBLER, mode) == 0)
2374 return xstrdup (DEFAULT_ASSEMBLER);
2377 #ifdef DEFAULT_LINKER
2378 if (! strcmp(name, "ld") && access (DEFAULT_LINKER, mode) == 0)
2379 return xstrdup (DEFAULT_LINKER);
2383 len += strlen (machine_suffix);
2385 multilib_name = name;
2386 multilib_os_name = name;
2387 if (multilib && multilib_os_dir)
2389 int len1 = multilib_dir ? strlen (multilib_dir) + 1 : 0;
2390 int len2 = strlen (multilib_os_dir) + 1;
2392 len += len1 > len2 ? len1 : len2;
2394 multilib_name = ACONCAT ((multilib_dir, dir_separator_str, name,
2396 if (strcmp (multilib_os_dir, ".") != 0)
2397 multilib_os_name = ACONCAT ((multilib_os_dir, dir_separator_str, name,
2401 temp = xmalloc (len);
2403 /* Determine the filename to execute (special case for absolute paths). */
2405 if (IS_ABSOLUTE_PATH (name))
2407 if (access (name, mode) == 0)
2409 strcpy (temp, name);
2414 for (pl = pprefix->plist; pl; pl = pl->next)
2416 const char *this_name
2417 = pl->os_multilib ? multilib_os_name : multilib_name;
2421 /* Some systems have a suffix for executable files.
2422 So try appending that first. */
2423 if (file_suffix[0] != 0)
2425 strcpy (temp, pl->prefix);
2426 strcat (temp, machine_suffix);
2427 strcat (temp, multilib_name);
2428 strcat (temp, file_suffix);
2429 if (access_check (temp, mode) == 0)
2431 if (pl->used_flag_ptr != 0)
2432 *pl->used_flag_ptr = 1;
2437 /* Now try just the multilib_name. */
2438 strcpy (temp, pl->prefix);
2439 strcat (temp, machine_suffix);
2440 strcat (temp, multilib_name);
2441 if (access_check (temp, mode) == 0)
2443 if (pl->used_flag_ptr != 0)
2444 *pl->used_flag_ptr = 1;
2449 /* Certain prefixes are tried with just the machine type,
2450 not the version. This is used for finding as, ld, etc. */
2451 if (just_machine_suffix && pl->require_machine_suffix == 2)
2453 /* Some systems have a suffix for executable files.
2454 So try appending that first. */
2455 if (file_suffix[0] != 0)
2457 strcpy (temp, pl->prefix);
2458 strcat (temp, just_machine_suffix);
2459 strcat (temp, multilib_name);
2460 strcat (temp, file_suffix);
2461 if (access_check (temp, mode) == 0)
2463 if (pl->used_flag_ptr != 0)
2464 *pl->used_flag_ptr = 1;
2469 strcpy (temp, pl->prefix);
2470 strcat (temp, just_machine_suffix);
2471 strcat (temp, multilib_name);
2472 if (access_check (temp, mode) == 0)
2474 if (pl->used_flag_ptr != 0)
2475 *pl->used_flag_ptr = 1;
2480 /* Certain prefixes can't be used without the machine suffix
2481 when the machine or version is explicitly specified. */
2482 if (! pl->require_machine_suffix)
2484 /* Some systems have a suffix for executable files.
2485 So try appending that first. */
2486 if (file_suffix[0] != 0)
2488 strcpy (temp, pl->prefix);
2489 strcat (temp, this_name);
2490 strcat (temp, file_suffix);
2491 if (access_check (temp, mode) == 0)
2493 if (pl->used_flag_ptr != 0)
2494 *pl->used_flag_ptr = 1;
2499 strcpy (temp, pl->prefix);
2500 strcat (temp, this_name);
2501 if (access_check (temp, mode) == 0)
2503 if (pl->used_flag_ptr != 0)
2504 *pl->used_flag_ptr = 1;
2514 /* Ranking of prefixes in the sort list. -B prefixes are put before
2517 enum path_prefix_priority
2519 PREFIX_PRIORITY_B_OPT,
2520 PREFIX_PRIORITY_LAST
2523 /* Add an entry for PREFIX in PLIST. The PLIST is kept in ascending
2524 order according to PRIORITY. Within each PRIORITY, new entries are
2527 If WARN is nonzero, we will warn if no file is found
2528 through this prefix. WARN should point to an int
2529 which will be set to 1 if this entry is used.
2531 COMPONENT is the value to be passed to update_path.
2533 REQUIRE_MACHINE_SUFFIX is 1 if this prefix can't be used without
2534 the complete value of machine_suffix.
2535 2 means try both machine_suffix and just_machine_suffix. */
2538 add_prefix (struct path_prefix *pprefix, const char *prefix,
2539 const char *component, /* enum prefix_priority */ int priority,
2540 int require_machine_suffix, int *warn, int os_multilib)
2542 struct prefix_list *pl, **prev;
2545 for (prev = &pprefix->plist;
2546 (*prev) != NULL && (*prev)->priority <= priority;
2547 prev = &(*prev)->next)
2550 /* Keep track of the longest prefix. */
2552 prefix = update_path (prefix, component);
2553 len = strlen (prefix);
2554 if (len > pprefix->max_len)
2555 pprefix->max_len = len;
2557 pl = xmalloc (sizeof (struct prefix_list));
2558 pl->prefix = prefix;
2559 pl->require_machine_suffix = require_machine_suffix;
2560 pl->used_flag_ptr = warn;
2561 pl->priority = priority;
2562 pl->os_multilib = os_multilib;
2566 /* Insert after PREV. */
2571 /* Same as add_prefix, but prepending target_system_root to prefix. */
2573 add_sysrooted_prefix (struct path_prefix *pprefix, const char *prefix,
2574 const char *component,
2575 /* enum prefix_priority */ int priority,
2576 int require_machine_suffix, int *warn, int os_multilib)
2578 if (!IS_ABSOLUTE_PATH (prefix))
2581 if (target_system_root)
2583 if (target_sysroot_suffix)
2584 prefix = concat (target_sysroot_suffix, prefix, NULL);
2585 prefix = concat (target_system_root, prefix, NULL);
2587 /* We have to override this because GCC's notion of sysroot
2588 moves along with GCC. */
2592 add_prefix (pprefix, prefix, component, priority,
2593 require_machine_suffix, warn, os_multilib);
2596 /* Execute the command specified by the arguments on the current line of spec.
2597 When using pipes, this includes several piped-together commands
2598 with `|' between them.
2600 Return 0 if successful, -1 if failed. */
2606 int n_commands; /* # of command. */
2610 const char *prog; /* program name. */
2611 const char **argv; /* vector of args. */
2612 int pid; /* pid of process for this command. */
2615 struct command *commands; /* each command buffer with above info. */
2617 if (processing_spec_function)
2620 /* Count # of piped commands. */
2621 for (n_commands = 1, i = 0; i < argbuf_index; i++)
2622 if (strcmp (argbuf[i], "|") == 0)
2625 /* Get storage for each command. */
2626 commands = alloca (n_commands * sizeof (struct command));
2628 /* Split argbuf into its separate piped processes,
2629 and record info about each one.
2630 Also search for the programs that are to be run. */
2632 commands[0].prog = argbuf[0]; /* first command. */
2633 commands[0].argv = &argbuf[0];
2634 string = find_a_file (&exec_prefixes, commands[0].prog, X_OK, 0);
2637 commands[0].argv[0] = string;
2639 for (n_commands = 1, i = 0; i < argbuf_index; i++)
2640 if (strcmp (argbuf[i], "|") == 0)
2641 { /* each command. */
2642 #if defined (__MSDOS__) || defined (OS2) || defined (VMS)
2643 fatal ("-pipe not supported");
2645 argbuf[i] = 0; /* termination of command args. */
2646 commands[n_commands].prog = argbuf[i + 1];
2647 commands[n_commands].argv = &argbuf[i + 1];
2648 string = find_a_file (&exec_prefixes, commands[n_commands].prog,
2651 commands[n_commands].argv[0] = string;
2655 argbuf[argbuf_index] = 0;
2657 /* If -v, print what we are about to do, and maybe query. */
2661 /* For help listings, put a blank line between sub-processes. */
2662 if (print_help_list)
2663 fputc ('\n', stderr);
2665 /* Print each piped command as a separate line. */
2666 for (i = 0; i < n_commands; i++)
2668 const char *const *j;
2670 if (verbose_only_flag)
2672 for (j = commands[i].argv; *j; j++)
2675 fprintf (stderr, " \"");
2676 for (p = *j; *p; ++p)
2678 if (*p == '"' || *p == '\\' || *p == '$')
2679 fputc ('\\', stderr);
2682 fputc ('"', stderr);
2686 for (j = commands[i].argv; *j; j++)
2687 fprintf (stderr, " %s", *j);
2689 /* Print a pipe symbol after all but the last command. */
2690 if (i + 1 != n_commands)
2691 fprintf (stderr, " |");
2692 fprintf (stderr, "\n");
2695 if (verbose_only_flag != 0)
2697 /* verbose_only_flag should act as if the spec was
2698 executed, so increment execution_count before
2699 returning. This prevents spurious warnings about
2700 unused linker input files, etc. */
2705 notice ("\nGo ahead? (y or n) ");
2709 while (getchar () != '\n')
2712 if (i != 'y' && i != 'Y')
2717 #ifdef ENABLE_VALGRIND_CHECKING
2718 /* Run the each command through valgrind. To simplify prepending the
2719 path to valgrind and the option "-q" (for quiet operation unless
2720 something triggers), we allocate a separate argv array. */
2722 for (i = 0; i < n_commands; i++)
2728 for (argc = 0; commands[i].argv[argc] != NULL; argc++)
2731 argv = alloca ((argc + 3) * sizeof (char *));
2733 argv[0] = VALGRIND_PATH;
2735 for (j = 2; j < argc + 2; j++)
2736 argv[j] = commands[i].argv[j - 2];
2739 commands[i].argv = argv;
2740 commands[i].prog = argv[0];
2744 /* Run each piped subprocess. */
2746 for (i = 0; i < n_commands; i++)
2748 char *errmsg_fmt, *errmsg_arg;
2749 const char *string = commands[i].argv[0];
2751 /* For some bizarre reason, the second argument of execvp() is
2752 char *const *, not const char *const *. */
2753 commands[i].pid = pexecute (string, (char *const *) commands[i].argv,
2754 programname, temp_filename,
2755 &errmsg_fmt, &errmsg_arg,
2756 ((i == 0 ? PEXECUTE_FIRST : 0)
2757 | (i + 1 == n_commands ? PEXECUTE_LAST : 0)
2758 | (string == commands[i].prog
2759 ? PEXECUTE_SEARCH : 0)
2760 | (verbose_flag ? PEXECUTE_VERBOSE : 0)));
2762 if (commands[i].pid == -1)
2763 pfatal_pexecute (errmsg_fmt, errmsg_arg);
2765 if (string != commands[i].prog)
2766 free ((void *) string);
2771 /* Wait for all the subprocesses to finish.
2772 We don't care what order they finish in;
2773 we know that N_COMMANDS waits will get them all.
2774 Ignore subprocesses that we don't know about,
2775 since they can be spawned by the process that exec'ed us. */
2779 #ifdef HAVE_GETRUSAGE
2781 double ut = 0.0, st = 0.0;
2784 for (i = 0; i < n_commands;)
2790 pid = pwait (commands[i].pid, &status, 0);
2794 #ifdef HAVE_GETRUSAGE
2797 /* getrusage returns the total resource usage of all children
2798 up to now. Copy the previous values into prus, get the
2799 current statistics, then take the difference. */
2802 getrusage (RUSAGE_CHILDREN, &rus);
2803 d.tv_sec = rus.ru_utime.tv_sec - prus.ru_utime.tv_sec;
2804 d.tv_usec = rus.ru_utime.tv_usec - prus.ru_utime.tv_usec;
2805 ut = (double) d.tv_sec + (double) d.tv_usec / 1.0e6;
2807 d.tv_sec = rus.ru_stime.tv_sec - prus.ru_stime.tv_sec;
2808 d.tv_usec = rus.ru_stime.tv_usec - prus.ru_stime.tv_usec;
2809 st = (double) d.tv_sec + (double) d.tv_usec / 1.0e6;
2813 for (j = 0; j < n_commands; j++)
2814 if (commands[j].pid == pid)
2817 if (WIFSIGNALED (status))
2820 /* SIGPIPE is a special case. It happens in -pipe mode
2821 when the compiler dies before the preprocessor is
2822 done, or the assembler dies before the compiler is
2823 done. There's generally been an error already, and
2824 this is just fallout. So don't generate another error
2825 unless we would otherwise have succeeded. */
2826 if (WTERMSIG (status) == SIGPIPE
2827 && (signal_count || greatest_status >= MIN_FATAL_STATUS))
2832 Internal error: %s (program %s)\n\
2833 Please submit a full bug report.\n\
2834 See %s for instructions.",
2835 strsignal (WTERMSIG (status)), commands[j].prog,
2840 else if (WIFEXITED (status)
2841 && WEXITSTATUS (status) >= MIN_FATAL_STATUS)
2843 if (WEXITSTATUS (status) > greatest_status)
2844 greatest_status = WEXITSTATUS (status);
2847 #ifdef HAVE_GETRUSAGE
2848 if (report_times && ut + st != 0)
2849 notice ("# %s %.2f %.2f\n", commands[j].prog, ut, st);
2858 /* Find all the switches given to us
2859 and make a vector describing them.
2860 The elements of the vector are strings, one per switch given.
2861 If a switch uses following arguments, then the `part1' field
2862 is the switch itself and the `args' field
2863 is a null-terminated vector containing the following arguments.
2864 The `live_cond' field is:
2866 1 if the switch is true in a conditional spec,
2867 -1 if false (overridden by a later switch)
2868 -2 if this switch should be ignored (used in %<S)
2869 The `validated' field is nonzero if any spec has looked at this switch;
2870 if it remains zero at the end of the run, it must be meaningless. */
2873 #define SWITCH_FALSE -1
2874 #define SWITCH_IGNORE -2
2875 #define SWITCH_LIVE 1
2882 unsigned char validated;
2883 unsigned char ordering;
2886 static struct switchstr *switches;
2888 static int n_switches;
2893 const char *language;
2896 /* Also a vector of input files specified. */
2898 static struct infile *infiles;
2902 /* True if multiple input files are being compiled to a single
2905 static bool combine_inputs;
2907 /* This counts the number of libraries added by lang_specific_driver, so that
2908 we can tell if there were any user supplied any files or libraries. */
2910 static int added_libraries;
2912 /* And a vector of corresponding output files is made up later. */
2914 const char **outfiles;
2916 /* Used to track if none of the -B paths are used. */
2919 /* Gives value to pass as "warn" to add_prefix for standard prefixes. */
2920 static int *warn_std_ptr = 0;
2922 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2924 /* Convert NAME to a new name if it is the standard suffix. DO_EXE
2925 is true if we should look for an executable suffix. DO_OBJ
2926 is true if we should look for an object suffix. */
2929 convert_filename (const char *name, int do_exe ATTRIBUTE_UNUSED,
2930 int do_obj ATTRIBUTE_UNUSED)
2932 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2940 len = strlen (name);
2942 #ifdef HAVE_TARGET_OBJECT_SUFFIX
2943 /* Convert x.o to x.obj if TARGET_OBJECT_SUFFIX is ".obj". */
2944 if (do_obj && len > 2
2945 && name[len - 2] == '.'
2946 && name[len - 1] == 'o')
2948 obstack_grow (&obstack, name, len - 2);
2949 obstack_grow0 (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX));
2950 name = obstack_finish (&obstack);
2954 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2955 /* If there is no filetype, make it the executable suffix (which includes
2956 the "."). But don't get confused if we have just "-o". */
2957 if (! do_exe || TARGET_EXECUTABLE_SUFFIX[0] == 0 || (len == 2 && name[0] == '-'))
2960 for (i = len - 1; i >= 0; i--)
2961 if (IS_DIR_SEPARATOR (name[i]))
2964 for (i++; i < len; i++)
2968 obstack_grow (&obstack, name, len);
2969 obstack_grow0 (&obstack, TARGET_EXECUTABLE_SUFFIX,
2970 strlen (TARGET_EXECUTABLE_SUFFIX));
2971 name = obstack_finish (&obstack);
2978 /* Display the command line switches accepted by gcc. */
2982 printf (_("Usage: %s [options] file...\n"), programname);
2983 fputs (_("Options:\n"), stdout);
2985 fputs (_(" -pass-exit-codes Exit with highest error code from a phase\n"), stdout);
2986 fputs (_(" --help Display this information\n"), stdout);
2987 fputs (_(" --target-help Display target specific command line options\n"), stdout);
2989 fputs (_(" (Use '-v --help' to display command line options of sub-processes)\n"), stdout);
2990 fputs (_(" -dumpspecs Display all of the built in spec strings\n"), stdout);
2991 fputs (_(" -dumpversion Display the version of the compiler\n"), stdout);
2992 fputs (_(" -dumpmachine Display the compiler's target processor\n"), stdout);
2993 fputs (_(" -print-search-dirs Display the directories in the compiler's search path\n"), stdout);
2994 fputs (_(" -print-libgcc-file-name Display the name of the compiler's companion library\n"), stdout);
2995 fputs (_(" -print-file-name=<lib> Display the full path to library <lib>\n"), stdout);
2996 fputs (_(" -print-prog-name=<prog> Display the full path to compiler component <prog>\n"), stdout);
2997 fputs (_(" -print-multi-directory Display the root directory for versions of libgcc\n"), stdout);
2999 -print-multi-lib Display the mapping between command line options and\n\
3000 multiple library search directories\n"), stdout);
3001 fputs (_(" -print-multi-os-directory Display the relative path to OS libraries\n"), stdout);
3002 fputs (_(" -Wa,<options> Pass comma-separated <options> on to the assembler\n"), stdout);
3003 fputs (_(" -Wp,<options> Pass comma-separated <options> on to the preprocessor\n"), stdout);
3004 fputs (_(" -Wl,<options> Pass comma-separated <options> on to the linker\n"), stdout);
3005 fputs (_(" -Xassembler <arg> Pass <arg> on to the assembler\n"), stdout);
3006 fputs (_(" -Xpreprocessor <arg> Pass <arg> on to the preprocessor\n"), stdout);
3007 fputs (_(" -Xlinker <arg> Pass <arg> on to the linker\n"), stdout);
3008 fputs (_(" -save-temps Do not delete intermediate files\n"), stdout);
3009 fputs (_(" -pipe Use pipes rather than intermediate files\n"), stdout);
3010 fputs (_(" -time Time the execution of each subprocess\n"), stdout);
3011 fputs (_(" -specs=<file> Override built-in specs with the contents of <file>\n"), stdout);
3012 fputs (_(" -std=<standard> Assume that the input sources are for <standard>\n"), stdout);
3013 fputs (_(" -B <directory> Add <directory> to the compiler's search paths\n"), stdout);
3014 fputs (_(" -b <machine> Run gcc for target <machine>, if installed\n"), stdout);
3015 fputs (_(" -V <version> Run gcc version number <version>, if installed\n"), stdout);
3016 fputs (_(" -v Display the programs invoked by the compiler\n"), stdout);
3017 fputs (_(" -### Like -v but options quoted and commands not executed\n"), stdout);
3018 fputs (_(" -E Preprocess only; do not compile, assemble or link\n"), stdout);
3019 fputs (_(" -S Compile only; do not assemble or link\n"), stdout);
3020 fputs (_(" -c Compile and assemble, but do not link\n"), stdout);
3021 fputs (_(" -o <file> Place the output into <file>\n"), stdout);
3023 -x <language> Specify the language of the following input files\n\
3024 Permissible languages include: c c++ assembler none\n\
3025 'none' means revert to the default behavior of\n\
3026 guessing the language based on the file's extension\n\
3030 \nOptions starting with -g, -f, -m, -O, -W, or --param are automatically\n\
3031 passed on to the various sub-processes invoked by %s. In order to pass\n\
3032 other options on to these processes the -W<letter> options must be used.\n\
3035 /* The rest of the options are displayed by invocations of the various
3040 add_preprocessor_option (const char *option, int len)
3042 n_preprocessor_options++;
3044 if (! preprocessor_options)
3045 preprocessor_options = xmalloc (n_preprocessor_options * sizeof (char *));
3047 preprocessor_options = xrealloc (preprocessor_options,
3048 n_preprocessor_options * sizeof (char *));
3050 preprocessor_options [n_preprocessor_options - 1] =
3051 save_string (option, len);
3055 add_assembler_option (const char *option, int len)
3057 n_assembler_options++;
3059 if (! assembler_options)
3060 assembler_options = xmalloc (n_assembler_options * sizeof (char *));
3062 assembler_options = xrealloc (assembler_options,
3063 n_assembler_options * sizeof (char *));
3065 assembler_options [n_assembler_options - 1] = save_string (option, len);
3069 add_linker_option (const char *option, int len)
3073 if (! linker_options)
3074 linker_options = xmalloc (n_linker_options * sizeof (char *));
3076 linker_options = xrealloc (linker_options,
3077 n_linker_options * sizeof (char *));
3079 linker_options [n_linker_options - 1] = save_string (option, len);
3082 /* Create the vector `switches' and its contents.
3083 Store its length in `n_switches'. */
3086 process_command (int argc, const char **argv)
3091 const char *spec_lang = 0;
3092 int last_language_n_infiles;
3095 int lang_n_infiles = 0;
3096 #ifdef MODIFY_TARGET_NAME
3097 int is_modify_target_name;
3101 GET_ENVIRONMENT (gcc_exec_prefix, "GCC_EXEC_PREFIX");
3105 added_libraries = 0;
3107 /* Figure compiler version from version string. */
3109 compiler_version = temp1 = xstrdup (version_string);
3111 for (; *temp1; ++temp1)
3120 /* If there is a -V or -b option (or both), process it now, before
3121 trying to interpret the rest of the command line. */
3122 if (argc > 1 && argv[1][0] == '-'
3123 && (argv[1][1] == 'V' || argv[1][1] == 'b'))
3125 const char *new_version = DEFAULT_TARGET_VERSION;
3126 const char *new_machine = DEFAULT_TARGET_MACHINE;
3127 const char *progname = argv[0];
3132 while (argc > 1 && argv[1][0] == '-'
3133 && (argv[1][1] == 'V' || argv[1][1] == 'b'))
3135 char opt = argv[1][1];
3137 if (argv[1][2] != '\0')
3150 fatal ("`-%c' option must have argument", opt);
3157 for (baselen = strlen (progname); baselen > 0; baselen--)
3158 if (IS_DIR_SEPARATOR (progname[baselen-1]))
3160 new_argv0 = xmemdup (progname, baselen,
3161 baselen + concat_length (new_version, new_machine,
3162 "-gcc-", NULL) + 1);
3163 strcpy (new_argv0 + baselen, new_machine);
3164 strcat (new_argv0, "-gcc-");
3165 strcat (new_argv0, new_version);
3167 new_argv = xmemdup (argv, (argc + 1) * sizeof (argv[0]),
3168 (argc + 1) * sizeof (argv[0]));
3169 new_argv[0] = new_argv0;
3171 execvp (new_argv0, new_argv);
3172 fatal ("couldn't run `%s': %s", new_argv0, xstrerror (errno));
3175 /* Set up the default search paths. If there is no GCC_EXEC_PREFIX,
3176 see if we can create it from the pathname specified in argv[0]. */
3178 gcc_libexec_prefix = standard_libexec_prefix;
3180 /* FIXME: make_relative_prefix doesn't yet work for VMS. */
3181 if (!gcc_exec_prefix)
3183 gcc_exec_prefix = make_relative_prefix (argv[0], standard_bindir_prefix,
3184 standard_exec_prefix);
3185 gcc_libexec_prefix = make_relative_prefix (argv[0],
3186 standard_bindir_prefix,
3187 standard_libexec_prefix);
3188 if (gcc_exec_prefix)
3189 putenv (concat ("GCC_EXEC_PREFIX=", gcc_exec_prefix, NULL));
3192 gcc_libexec_prefix = make_relative_prefix (gcc_exec_prefix,
3193 standard_exec_prefix,
3194 standard_libexec_prefix);
3198 if (gcc_exec_prefix)
3200 int len = strlen (gcc_exec_prefix);
3202 if (len > (int) sizeof ("/lib/gcc/") - 1
3203 && (IS_DIR_SEPARATOR (gcc_exec_prefix[len-1])))
3205 temp = gcc_exec_prefix + len - sizeof ("/lib/gcc/") + 1;
3206 if (IS_DIR_SEPARATOR (*temp)
3207 && strncmp (temp + 1, "lib", 3) == 0
3208 && IS_DIR_SEPARATOR (temp[4])
3209 && strncmp (temp + 5, "gcc", 3) == 0)
3210 len -= sizeof ("/lib/gcc/") - 1;
3213 set_std_prefix (gcc_exec_prefix, len);
3214 add_prefix (&exec_prefixes, gcc_libexec_prefix, "GCC",
3215 PREFIX_PRIORITY_LAST, 0, NULL, 0);
3216 add_prefix (&startfile_prefixes, gcc_exec_prefix, "GCC",
3217 PREFIX_PRIORITY_LAST, 0, NULL, 0);
3220 /* COMPILER_PATH and LIBRARY_PATH have values
3221 that are lists of directory names with colons. */
3223 GET_ENVIRONMENT (temp, "COMPILER_PATH");
3226 const char *startp, *endp;
3227 char *nstore = alloca (strlen (temp) + 3);
3229 startp = endp = temp;
3232 if (*endp == PATH_SEPARATOR || *endp == 0)
3234 strncpy (nstore, startp, endp - startp);
3236 strcpy (nstore, concat (".", dir_separator_str, NULL));
3237 else if (!IS_DIR_SEPARATOR (endp[-1]))
3239 nstore[endp - startp] = DIR_SEPARATOR;
3240 nstore[endp - startp + 1] = 0;
3243 nstore[endp - startp] = 0;
3244 add_prefix (&exec_prefixes, nstore, 0,
3245 PREFIX_PRIORITY_LAST, 0, NULL, 0);
3246 add_prefix (&include_prefixes,
3247 concat (nstore, "include", NULL),
3248 0, PREFIX_PRIORITY_LAST, 0, NULL, 0);
3251 endp = startp = endp + 1;
3258 GET_ENVIRONMENT (temp, LIBRARY_PATH_ENV);
3259 if (temp && *cross_compile == '0')
3261 const char *startp, *endp;
3262 char *nstore = alloca (strlen (temp) + 3);
3264 startp = endp = temp;
3267 if (*endp == PATH_SEPARATOR || *endp == 0)
3269 strncpy (nstore, startp, endp - startp);
3271 strcpy (nstore, concat (".", dir_separator_str, NULL));
3272 else if (!IS_DIR_SEPARATOR (endp[-1]))
3274 nstore[endp - startp] = DIR_SEPARATOR;
3275 nstore[endp - startp + 1] = 0;
3278 nstore[endp - startp] = 0;
3279 add_prefix (&startfile_prefixes, nstore, NULL,
3280 PREFIX_PRIORITY_LAST, 0, NULL, 1);
3283 endp = startp = endp + 1;
3290 /* Use LPATH like LIBRARY_PATH (for the CMU build program). */
3291 GET_ENVIRONMENT (temp, "LPATH");
3292 if (temp && *cross_compile == '0')
3294 const char *startp, *endp;
3295 char *nstore = alloca (strlen (temp) + 3);
3297 startp = endp = temp;
3300 if (*endp == PATH_SEPARATOR || *endp == 0)
3302 strncpy (nstore, startp, endp - startp);
3304 strcpy (nstore, concat (".", dir_separator_str, NULL));
3305 else if (!IS_DIR_SEPARATOR (endp[-1]))
3307 nstore[endp - startp] = DIR_SEPARATOR;
3308 nstore[endp - startp + 1] = 0;
3311 nstore[endp - startp] = 0;
3312 add_prefix (&startfile_prefixes, nstore, NULL,
3313 PREFIX_PRIORITY_LAST, 0, NULL, 1);
3316 endp = startp = endp + 1;
3323 /* Convert new-style -- options to old-style. */
3324 translate_options (&argc, (const char *const **) &argv);
3326 /* Do language-specific adjustment/addition of flags. */
3327 lang_specific_driver (&argc, (const char *const **) &argv, &added_libraries);
3329 /* Scan argv twice. Here, the first time, just count how many switches
3330 there will be in their vector, and how many input files in theirs.
3331 Here we also parse the switches that cc itself uses (e.g. -v). */
3333 for (i = 1; i < argc; i++)
3335 if (! strcmp (argv[i], "-dumpspecs"))
3337 struct spec_list *sl;
3339 for (sl = specs; sl; sl = sl->next)
3340 printf ("*%s:\n%s\n\n", sl->name, *(sl->ptr_spec));
3341 if (link_command_spec)
3342 printf ("*link_command:\n%s\n\n", link_command_spec);
3345 else if (! strcmp (argv[i], "-dumpversion"))
3347 printf ("%s\n", spec_version);
3350 else if (! strcmp (argv[i], "-dumpmachine"))
3352 printf ("%s\n", spec_machine);
3355 else if (strcmp (argv[i], "-fversion") == 0)
3357 /* translate_options () has turned --version into -fversion. */
3358 printf (_("%s (GCC) %s\n"), programname, version_string);
3359 printf ("Copyright %s 2004 Free Software Foundation, Inc.\n",
3361 fputs (_("This is free software; see the source for copying conditions. There is NO\n\
3362 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\n"),
3366 else if (strcmp (argv[i], "-fhelp") == 0)
3368 /* translate_options () has turned --help into -fhelp. */
3369 print_help_list = 1;
3371 /* We will be passing a dummy file on to the sub-processes. */
3375 /* CPP driver cannot obtain switch from cc1_options. */
3377 add_preprocessor_option ("--help", 6);
3378 add_assembler_option ("--help", 6);
3379 add_linker_option ("--help", 6);
3381 else if (strcmp (argv[i], "-ftarget-help") == 0)
3383 /* translate_options() has turned --target-help into -ftarget-help. */
3384 target_help_flag = 1;
3386 /* We will be passing a dummy file on to the sub-processes. */
3390 /* CPP driver cannot obtain switch from cc1_options. */
3392 add_preprocessor_option ("--target-help", 13);
3393 add_assembler_option ("--target-help", 13);
3394 add_linker_option ("--target-help", 13);
3396 else if (! strcmp (argv[i], "-pass-exit-codes"))
3398 pass_exit_codes = 1;
3401 else if (! strcmp (argv[i], "-print-search-dirs"))
3402 print_search_dirs = 1;
3403 else if (! strcmp (argv[i], "-print-libgcc-file-name"))
3404 print_file_name = "libgcc.a";
3405 else if (! strncmp (argv[i], "-print-file-name=", 17))
3406 print_file_name = argv[i] + 17;
3407 else if (! strncmp (argv[i], "-print-prog-name=", 17))
3408 print_prog_name = argv[i] + 17;
3409 else if (! strcmp (argv[i], "-print-multi-lib"))
3410 print_multi_lib = 1;
3411 else if (! strcmp (argv[i], "-print-multi-directory"))
3412 print_multi_directory = 1;
3413 else if (! strcmp (argv[i], "-print-multi-os-directory"))
3414 print_multi_os_directory = 1;
3415 else if (! strncmp (argv[i], "-Wa,", 4))
3418 /* Pass the rest of this option to the assembler. */
3420 /* Split the argument at commas. */
3422 for (j = 4; argv[i][j]; j++)
3423 if (argv[i][j] == ',')
3425 add_assembler_option (argv[i] + prev, j - prev);
3429 /* Record the part after the last comma. */
3430 add_assembler_option (argv[i] + prev, j - prev);
3432 else if (! strncmp (argv[i], "-Wp,", 4))
3435 /* Pass the rest of this option to the preprocessor. */
3437 /* Split the argument at commas. */
3439 for (j = 4; argv[i][j]; j++)
3440 if (argv[i][j] == ',')
3442 add_preprocessor_option (argv[i] + prev, j - prev);
3446 /* Record the part after the last comma. */
3447 add_preprocessor_option (argv[i] + prev, j - prev);
3449 else if (argv[i][0] == '+' && argv[i][1] == 'e')
3450 /* The +e options to the C++ front-end. */
3452 else if (strncmp (argv[i], "-Wl,", 4) == 0)
3455 /* Split the argument at commas. */
3456 for (j = 3; argv[i][j]; j++)
3457 n_infiles += (argv[i][j] == ',');
3459 else if (strcmp (argv[i], "-Xlinker") == 0)
3462 fatal ("argument to `-Xlinker' is missing");
3467 else if (strcmp (argv[i], "-Xpreprocessor") == 0)
3470 fatal ("argument to `-Xpreprocessor' is missing");
3472 add_preprocessor_option (argv[i+1], strlen (argv[i+1]));
3474 else if (strcmp (argv[i], "-Xassembler") == 0)
3477 fatal ("argument to `-Xassembler' is missing");
3479 add_assembler_option (argv[i+1], strlen (argv[i+1]));
3481 else if (strcmp (argv[i], "-l") == 0)
3484 fatal ("argument to `-l' is missing");
3489 else if (strncmp (argv[i], "-l", 2) == 0)
3491 else if (strcmp (argv[i], "-save-temps") == 0)
3493 save_temps_flag = 1;
3496 else if (strcmp (argv[i], "-specs") == 0)
3498 struct user_specs *user = xmalloc (sizeof (struct user_specs));
3500 fatal ("argument to `-specs' is missing");
3502 user->next = (struct user_specs *) 0;
3503 user->filename = argv[i];
3504 if (user_specs_tail)
3505 user_specs_tail->next = user;
3507 user_specs_head = user;
3508 user_specs_tail = user;
3510 else if (strncmp (argv[i], "-specs=", 7) == 0)
3512 struct user_specs *user = xmalloc (sizeof (struct user_specs));
3513 if (strlen (argv[i]) == 7)
3514 fatal ("argument to `-specs=' is missing");
3516 user->next = (struct user_specs *) 0;
3517 user->filename = argv[i] + 7;
3518 if (user_specs_tail)
3519 user_specs_tail->next = user;
3521 user_specs_head = user;
3522 user_specs_tail = user;
3524 else if (strcmp (argv[i], "-time") == 0)
3526 else if (strcmp (argv[i], "-pipe") == 0)
3528 /* -pipe has to go into the switches array as well as
3533 else if (strcmp (argv[i], "-###") == 0)
3535 /* This is similar to -v except that there is no execution
3536 of the commands and the echoed arguments are quoted. It
3537 is intended for use in shell scripts to capture the
3538 driver-generated command line. */
3539 verbose_only_flag++;
3542 else if (argv[i][0] == '-' && argv[i][1] != 0)
3544 const char *p = &argv[i][1];
3551 fatal ("`-%c' must come at the start of the command line", c);
3559 if (p[1] == 0 && i + 1 == argc)
3560 fatal ("argument to `-B' is missing");
3566 len = strlen (value);
3568 /* Catch the case where the user has forgotten to append a
3569 directory separator to the path. Note, they may be using
3570 -B to add an executable name prefix, eg "i386-elf-", in
3571 order to distinguish between multiple installations of
3572 GCC in the same directory. Hence we must check to see
3573 if appending a directory separator actually makes a
3574 valid directory name. */
3575 if (! IS_DIR_SEPARATOR (value [len - 1])
3576 && is_directory (value, "", 0))
3578 char *tmp = xmalloc (len + 2);
3579 strcpy (tmp, value);
3580 tmp[len] = DIR_SEPARATOR;
3585 /* As a kludge, if the arg is "[foo/]stageN/", just
3586 add "[foo/]include" to the include prefix. */
3589 && (IS_DIR_SEPARATOR (value[len - 8]))))
3590 && strncmp (value + len - 7, "stage", 5) == 0
3591 && ISDIGIT (value[len - 2])
3592 && (IS_DIR_SEPARATOR (value[len - 1])))
3595 add_prefix (&include_prefixes, "include", NULL,
3596 PREFIX_PRIORITY_B_OPT, 0, NULL, 0);
3599 char * string = xmalloc (len + 1);
3601 strncpy (string, value, len - 7);
3602 strcpy (string + len - 7, "include");
3603 add_prefix (&include_prefixes, string, NULL,
3604 PREFIX_PRIORITY_B_OPT, 0, NULL, 0);
3608 add_prefix (&exec_prefixes, value, NULL,
3609 PREFIX_PRIORITY_B_OPT, 0, &warn_B, 0);
3610 add_prefix (&startfile_prefixes, value, NULL,
3611 PREFIX_PRIORITY_B_OPT, 0, &warn_B, 0);
3612 add_prefix (&include_prefixes, concat (value, "include", NULL),
3613 NULL, PREFIX_PRIORITY_B_OPT, 0, NULL, 0);
3618 case 'v': /* Print our subcommands and print versions. */
3620 /* If they do anything other than exactly `-v', don't set
3621 verbose_flag; rather, continue on to give the error. */
3639 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3644 /* Forward scan, just in case -S or -c is specified
3651 if (argv[j][0] == '-')
3653 if (SWITCH_CURTAILS_COMPILATION (argv[j][1])
3659 else if ((skip = SWITCH_TAKES_ARG (argv[j][1])))
3660 j += skip - (argv[j][2] != 0);
3661 else if ((skip = WORD_SWITCH_TAKES_ARG (argv[j] + 1)))
3668 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX) || defined(HAVE_TARGET_OBJECT_SUFFIX)
3670 argv[i + 1] = convert_filename (argv[i + 1], ! have_c, 0);
3672 argv[i] = convert_filename (argv[i], ! have_c, 0);
3679 #ifdef MODIFY_TARGET_NAME
3680 is_modify_target_name = 0;
3682 for (j = 0; j < ARRAY_SIZE (modify_target); j++)
3683 if (! strcmp (argv[i], modify_target[j].sw))
3685 char *new_name = xmalloc (strlen (modify_target[j].str)
3686 + strlen (spec_machine));
3689 int made_addition = 0;
3691 is_modify_target_name = 1;
3692 for (p = spec_machine, q = new_name; *p != 0; )
3694 if (modify_target[j].add_del == DELETE
3695 && (! strncmp (q, modify_target[j].str,
3696 strlen (modify_target[j].str))))
3697 p += strlen (modify_target[j].str);
3698 else if (modify_target[j].add_del == ADD
3699 && ! made_addition && *p == '-')
3701 for (r = modify_target[j].str; *r != 0; )
3709 spec_machine = new_name;
3712 if (is_modify_target_name)
3718 if (SWITCH_TAKES_ARG (c) > (p[1] != 0))
3719 i += SWITCH_TAKES_ARG (c) - (p[1] != 0);
3720 else if (WORD_SWITCH_TAKES_ARG (p))
3721 i += WORD_SWITCH_TAKES_ARG (p);
3731 combine_inputs = (have_c && have_o && lang_n_infiles > 1);
3733 if ((save_temps_flag || report_times) && use_pipes)
3735 /* -save-temps overrides -pipe, so that temp files are produced */
3736 if (save_temps_flag)
3737 error ("warning: -pipe ignored because -save-temps specified");
3738 /* -time overrides -pipe because we can't get correct stats when
3739 multiple children are running at once. */
3740 else if (report_times)
3741 error ("warning: -pipe ignored because -time specified");
3746 /* Set up the search paths before we go looking for config files. */
3748 /* These come before the md prefixes so that we will find gcc's subcommands
3749 (such as cpp) rather than those of the host system. */
3750 /* Use 2 as fourth arg meaning try just the machine as a suffix,
3751 as well as trying the machine and the version. */
3753 add_prefix (&exec_prefixes, standard_libexec_prefix, "GCC",
3754 PREFIX_PRIORITY_LAST, 1, warn_std_ptr, 0);
3755 add_prefix (&exec_prefixes, standard_libexec_prefix, "BINUTILS",
3756 PREFIX_PRIORITY_LAST, 2, warn_std_ptr, 0);
3757 add_prefix (&exec_prefixes, standard_exec_prefix, "BINUTILS",
3758 PREFIX_PRIORITY_LAST, 2, warn_std_ptr, 0);
3759 add_prefix (&exec_prefixes, standard_exec_prefix_1, "BINUTILS",
3760 PREFIX_PRIORITY_LAST, 2, warn_std_ptr, 0);
3761 add_prefix (&exec_prefixes, standard_exec_prefix_2, "BINUTILS",
3762 PREFIX_PRIORITY_LAST, 2, warn_std_ptr, 0);
3765 add_prefix (&startfile_prefixes, standard_exec_prefix, "BINUTILS",
3766 PREFIX_PRIORITY_LAST, 1, warn_std_ptr, 0);
3767 add_prefix (&startfile_prefixes, standard_exec_prefix_2, "BINUTILS",
3768 PREFIX_PRIORITY_LAST, 1, warn_std_ptr, 0);
3770 tooldir_prefix = concat (tooldir_base_prefix, spec_machine,
3771 dir_separator_str, NULL);
3773 /* If tooldir is relative, base it on exec_prefixes. A relative
3774 tooldir lets us move the installed tree as a unit.
3776 If GCC_EXEC_PREFIX is defined, then we want to add two relative
3777 directories, so that we can search both the user specified directory
3778 and the standard place. */
3780 if (!IS_ABSOLUTE_PATH (tooldir_prefix))
3782 if (gcc_exec_prefix)
3784 char *gcc_exec_tooldir_prefix
3785 = concat (gcc_exec_prefix, spec_machine, dir_separator_str,
3786 spec_version, dir_separator_str, tooldir_prefix, NULL);
3788 add_prefix (&exec_prefixes,
3789 concat (gcc_exec_tooldir_prefix, "bin",
3790 dir_separator_str, NULL),
3791 NULL, PREFIX_PRIORITY_LAST, 0, NULL, 0);
3792 add_prefix (&startfile_prefixes,
3793 concat (gcc_exec_tooldir_prefix, "lib",
3794 dir_separator_str, NULL),
3795 NULL, PREFIX_PRIORITY_LAST, 0, NULL, 1);
3798 tooldir_prefix = concat (standard_exec_prefix, spec_machine,
3799 dir_separator_str, spec_version,
3800 dir_separator_str, tooldir_prefix, NULL);
3803 add_prefix (&exec_prefixes,
3804 concat (tooldir_prefix, "bin", dir_separator_str, NULL),
3805 "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL, 0);
3806 add_prefix (&startfile_prefixes,
3807 concat (tooldir_prefix, "lib", dir_separator_str, NULL),
3808 "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL, 1);
3810 #if defined(TARGET_SYSTEM_ROOT_RELOCATABLE) && !defined(VMS)
3811 /* If the normal TARGET_SYSTEM_ROOT is inside of $exec_prefix,
3812 then consider it to relocate with the rest of the GCC installation
3813 if GCC_EXEC_PREFIX is set.
3814 ``make_relative_prefix'' is not compiled for VMS, so don't call it. */
3815 if (target_system_root && gcc_exec_prefix)
3817 char *tmp_prefix = make_relative_prefix (argv[0],
3818 standard_bindir_prefix,
3819 target_system_root);
3820 if (tmp_prefix && access_check (tmp_prefix, F_OK) == 0)
3822 target_system_root = tmp_prefix;
3823 target_system_root_changed = 1;
3828 /* More prefixes are enabled in main, after we read the specs file
3829 and determine whether this is cross-compilation or not. */
3831 /* Then create the space for the vectors and scan again. */
3833 switches = xmalloc ((n_switches + 1) * sizeof (struct switchstr));
3834 infiles = xmalloc ((n_infiles + 1) * sizeof (struct infile));
3837 last_language_n_infiles = -1;
3839 /* This, time, copy the text of each switch and store a pointer
3840 to the copy in the vector of switches.
3841 Store all the infiles in their vector. */
3843 for (i = 1; i < argc; i++)
3845 /* Just skip the switches that were handled by the preceding loop. */
3846 #ifdef MODIFY_TARGET_NAME
3847 is_modify_target_name = 0;
3849 for (j = 0; j < ARRAY_SIZE (modify_target); j++)
3850 if (! strcmp (argv[i], modify_target[j].sw))
3851 is_modify_target_name = 1;
3853 if (is_modify_target_name)
3857 if (! strncmp (argv[i], "-Wa,", 4))
3859 else if (! strncmp (argv[i], "-Wp,", 4))
3861 else if (! strcmp (argv[i], "-pass-exit-codes"))
3863 else if (! strcmp (argv[i], "-print-search-dirs"))
3865 else if (! strcmp (argv[i], "-print-libgcc-file-name"))
3867 else if (! strncmp (argv[i], "-print-file-name=", 17))
3869 else if (! strncmp (argv[i], "-print-prog-name=", 17))
3871 else if (! strcmp (argv[i], "-print-multi-lib"))
3873 else if (! strcmp (argv[i], "-print-multi-directory"))
3875 else if (! strcmp (argv[i], "-print-multi-os-directory"))
3877 else if (! strcmp (argv[i], "-ftarget-help"))
3879 else if (! strcmp (argv[i], "-fhelp"))
3881 else if (argv[i][0] == '+' && argv[i][1] == 'e')
3883 /* Compensate for the +e options to the C++ front-end;
3884 they're there simply for cfront call-compatibility. We do
3885 some magic in default_compilers to pass them down properly.
3886 Note we deliberately start at the `+' here, to avoid passing
3887 -e0 or -e1 down into the linker. */
3888 switches[n_switches].part1 = &argv[i][0];
3889 switches[n_switches].args = 0;
3890 switches[n_switches].live_cond = SWITCH_OK;
3891 switches[n_switches].validated = 0;
3894 else if (strncmp (argv[i], "-Wl,", 4) == 0)
3897 /* Split the argument at commas. */
3899 for (j = 4; argv[i][j]; j++)
3900 if (argv[i][j] == ',')
3902 infiles[n_infiles].language = "*";
3903 infiles[n_infiles++].name
3904 = save_string (argv[i] + prev, j - prev);
3907 /* Record the part after the last comma. */
3908 infiles[n_infiles].language = "*";
3909 infiles[n_infiles++].name = argv[i] + prev;
3911 else if (strcmp (argv[i], "-Xlinker") == 0)
3913 infiles[n_infiles].language = "*";
3914 infiles[n_infiles++].name = argv[++i];
3916 else if (strcmp (argv[i], "-Xassembler") == 0)
3918 infiles[n_infiles].language = "*";
3919 infiles[n_infiles++].name = argv[++i];
3921 else if (strcmp (argv[i], "-Xpreprocessor") == 0)
3923 infiles[n_infiles].language = "*";
3924 infiles[n_infiles++].name = argv[++i];
3926 else if (strcmp (argv[i], "-l") == 0)
3927 { /* POSIX allows separation of -l and the lib arg;
3928 canonicalize by concatenating -l with its arg */
3929 infiles[n_infiles].language = "*";
3930 infiles[n_infiles++].name = concat ("-l", argv[++i], NULL);
3932 else if (strncmp (argv[i], "-l", 2) == 0)
3934 infiles[n_infiles].language = "*";
3935 infiles[n_infiles++].name = argv[i];
3937 else if (strcmp (argv[i], "-specs") == 0)
3939 else if (strncmp (argv[i], "-specs=", 7) == 0)
3941 else if (strcmp (argv[i], "-time") == 0)
3943 else if (strcmp (argv[i], "-###") == 0)
3945 else if (argv[i][0] == '-' && argv[i][1] != 0)
3947 const char *p = &argv[i][1];
3952 if (p[1] == 0 && i + 1 == argc)
3953 fatal ("argument to `-x' is missing");
3955 spec_lang = argv[++i];
3958 if (! strcmp (spec_lang, "none"))
3959 /* Suppress the warning if -xnone comes after the last input
3960 file, because alternate command interfaces like g++ might
3961 find it useful to place -xnone after each input file. */
3964 last_language_n_infiles = n_infiles;
3967 switches[n_switches].part1 = p;
3968 /* Deal with option arguments in separate argv elements. */
3969 if ((SWITCH_TAKES_ARG (c) > (p[1] != 0))
3970 || WORD_SWITCH_TAKES_ARG (p))
3973 int n_args = WORD_SWITCH_TAKES_ARG (p);
3977 /* Count only the option arguments in separate argv elements. */
3978 n_args = SWITCH_TAKES_ARG (c) - (p[1] != 0);
3980 if (i + n_args >= argc)
3981 fatal ("argument to `-%s' is missing", p);
3982 switches[n_switches].args
3983 = xmalloc ((n_args + 1) * sizeof(const char *));
3985 switches[n_switches].args[j++] = argv[++i];
3986 /* Null-terminate the vector. */
3987 switches[n_switches].args[j] = 0;
3989 else if (strchr (switches_need_spaces, c))
3991 /* On some systems, ld cannot handle some options without
3992 a space. So split the option from its argument. */
3993 char *part1 = xmalloc (2);
3997 switches[n_switches].part1 = part1;
3998 switches[n_switches].args = xmalloc (2 * sizeof (const char *));
3999 switches[n_switches].args[0] = xstrdup (p+1);
4000 switches[n_switches].args[1] = 0;
4003 switches[n_switches].args = 0;
4005 switches[n_switches].live_cond = SWITCH_OK;
4006 switches[n_switches].validated = 0;
4007 switches[n_switches].ordering = 0;
4008 /* These are always valid, since gcc.c itself understands them. */
4009 if (!strcmp (p, "save-temps")
4010 || !strcmp (p, "static-libgcc")
4011 || !strcmp (p, "shared-libgcc")
4012 || !strcmp (p, "pipe"))
4013 switches[n_switches].validated = 1;
4016 char ch = switches[n_switches].part1[0];
4018 switches[n_switches].validated = 1;
4024 #ifdef HAVE_TARGET_OBJECT_SUFFIX
4025 argv[i] = convert_filename (argv[i], 0, access (argv[i], F_OK));
4028 if (strcmp (argv[i], "-") != 0 && access (argv[i], F_OK) < 0)
4030 perror_with_name (argv[i]);
4035 infiles[n_infiles].language = spec_lang;
4036 infiles[n_infiles++].name = argv[i];
4041 if (n_infiles == last_language_n_infiles && spec_lang != 0)
4042 error ("warning: `-x %s' after last input file has no effect", spec_lang);
4044 /* Ensure we only invoke each subprocess once. */
4045 if (target_help_flag || print_help_list)
4049 /* Create a dummy input file, so that we can pass --target-help on to
4050 the various sub-processes. */
4051 infiles[0].language = "c";
4052 infiles[0].name = "help-dummy";
4054 if (target_help_flag)
4056 switches[n_switches].part1 = "--target-help";
4057 switches[n_switches].args = 0;
4058 switches[n_switches].live_cond = SWITCH_OK;
4059 switches[n_switches].validated = 0;
4064 if (print_help_list)
4066 switches[n_switches].part1 = "--help";
4067 switches[n_switches].args = 0;
4068 switches[n_switches].live_cond = SWITCH_OK;
4069 switches[n_switches].validated = 0;
4075 switches[n_switches].part1 = 0;
4076 infiles[n_infiles].name = 0;
4079 /* Store switches not filtered out by %<S in spec in COLLECT_GCC_OPTIONS
4080 and place that in the environment. */
4083 set_collect_gcc_options (void)
4088 /* Build COLLECT_GCC_OPTIONS to have all of the options specified to
4090 obstack_grow (&collect_obstack, "COLLECT_GCC_OPTIONS=",
4091 sizeof ("COLLECT_GCC_OPTIONS=") - 1);
4094 for (i = 0; (int) i < n_switches; i++)
4096 const char *const *args;
4099 obstack_grow (&collect_obstack, " ", 1);
4103 /* Ignore elided switches. */
4104 if (switches[i].live_cond == SWITCH_IGNORE)
4107 obstack_grow (&collect_obstack, "'-", 2);
4108 q = switches[i].part1;
4109 while ((p = strchr (q, '\'')))
4111 obstack_grow (&collect_obstack, q, p - q);
4112 obstack_grow (&collect_obstack, "'\\''", 4);
4115 obstack_grow (&collect_obstack, q, strlen (q));
4116 obstack_grow (&collect_obstack, "'", 1);
4118 for (args = switches[i].args; args && *args; args++)
4120 obstack_grow (&collect_obstack, " '", 2);
4122 while ((p = strchr (q, '\'')))
4124 obstack_grow (&collect_obstack, q, p - q);
4125 obstack_grow (&collect_obstack, "'\\''", 4);
4128 obstack_grow (&collect_obstack, q, strlen (q));
4129 obstack_grow (&collect_obstack, "'", 1);
4132 obstack_grow (&collect_obstack, "\0", 1);
4133 putenv (obstack_finish (&collect_obstack));
4136 /* Process a spec string, accumulating and running commands. */
4138 /* These variables describe the input file name.
4139 input_file_number is the index on outfiles of this file,
4140 so that the output file name can be stored for later use by %o.
4141 input_basename is the start of the part of the input file
4142 sans all directory names, and basename_length is the number
4143 of characters starting there excluding the suffix .c or whatever. */
4145 static const char *input_filename;
4146 static int input_file_number;
4147 size_t input_filename_length;
4148 static int basename_length;
4149 static int suffixed_basename_length;
4150 static const char *input_basename;
4151 static const char *input_suffix;
4152 static struct stat input_stat;
4153 static int input_stat_set;
4155 /* The compiler used to process the current input file. */
4156 static struct compiler *input_file_compiler;
4158 /* These are variables used within do_spec and do_spec_1. */
4160 /* Nonzero if an arg has been started and not yet terminated
4161 (with space, tab or newline). */
4162 static int arg_going;
4164 /* Nonzero means %d or %g has been seen; the next arg to be terminated
4165 is a temporary file name. */
4166 static int delete_this_arg;
4168 /* Nonzero means %w has been seen; the next arg to be terminated
4169 is the output file name of this compilation. */
4170 static int this_is_output_file;
4172 /* Nonzero means %s has been seen; the next arg to be terminated
4173 is the name of a library file and we should try the standard
4174 search dirs for it. */
4175 static int this_is_library_file;
4177 /* Nonzero means that the input of this command is coming from a pipe. */
4178 static int input_from_pipe;
4180 /* Nonnull means substitute this for any suffix when outputting a switches
4182 static const char *suffix_subst;
4184 /* Process the spec SPEC and run the commands specified therein.
4185 Returns 0 if the spec is successfully processed; -1 if failed. */
4188 do_spec (const char *spec)
4192 value = do_spec_2 (spec);
4194 /* Force out any unfinished command.
4195 If -pipe, this forces out the last command if it ended in `|'. */
4198 if (argbuf_index > 0 && !strcmp (argbuf[argbuf_index - 1], "|"))
4201 set_collect_gcc_options ();
4203 if (argbuf_index > 0)
4211 do_spec_2 (const char *spec)
4218 delete_this_arg = 0;
4219 this_is_output_file = 0;
4220 this_is_library_file = 0;
4221 input_from_pipe = 0;
4222 suffix_subst = NULL;
4224 result = do_spec_1 (spec, 0, NULL);
4226 /* End any pending argument. */
4229 obstack_1grow (&obstack, 0);
4230 string = obstack_finish (&obstack);
4231 if (this_is_library_file)
4232 string = find_file (string);
4233 store_arg (string, delete_this_arg, this_is_output_file);
4234 if (this_is_output_file)
4235 outfiles[input_file_number] = string;
4243 /* Process the given spec string and add any new options to the end
4244 of the switches/n_switches array. */
4247 do_option_spec (const char *name, const char *spec)
4249 unsigned int i, value_count, value_len;
4250 const char *p, *q, *value;
4251 char *tmp_spec, *tmp_spec_p;
4253 if (configure_default_options[0].name == NULL)
4256 for (i = 0; i < ARRAY_SIZE (configure_default_options); i++)
4257 if (strcmp (configure_default_options[i].name, name) == 0)
4259 if (i == ARRAY_SIZE (configure_default_options))
4262 value = configure_default_options[i].value;
4263 value_len = strlen (value);
4265 /* Compute the size of the final spec. */
4268 while ((p = strstr (p, "%(VALUE)")) != NULL)
4274 /* Replace each %(VALUE) by the specified value. */
4275 tmp_spec = alloca (strlen (spec) + 1
4276 + value_count * (value_len - strlen ("%(VALUE)")));
4277 tmp_spec_p = tmp_spec;
4279 while ((p = strstr (q, "%(VALUE)")) != NULL)
4281 memcpy (tmp_spec_p, q, p - q);
4282 tmp_spec_p = tmp_spec_p + (p - q);
4283 memcpy (tmp_spec_p, value, value_len);
4284 tmp_spec_p += value_len;
4285 q = p + strlen ("%(VALUE)");
4287 strcpy (tmp_spec_p, q);
4289 do_self_spec (tmp_spec);
4292 /* Process the given spec string and add any new options to the end
4293 of the switches/n_switches array. */
4296 do_self_spec (const char *spec)
4299 do_spec_1 (" ", 0, NULL);
4301 if (argbuf_index > 0)
4306 n_switches += argbuf_index;
4307 switches = xrealloc (switches,
4308 sizeof (struct switchstr) * (n_switches + 1));
4310 switches[n_switches] = switches[first];
4311 for (i = 0; i < argbuf_index; i++)
4313 struct switchstr *sw;
4315 /* Each switch should start with '-'. */
4316 if (argbuf[i][0] != '-')
4319 sw = &switches[i + first];
4320 sw->part1 = &argbuf[i][1];
4322 sw->live_cond = SWITCH_OK;
4329 /* Process the sub-spec SPEC as a portion of a larger spec.
4330 This is like processing a whole spec except that we do
4331 not initialize at the beginning and we do not supply a
4332 newline by default at the end.
4333 INSWITCH nonzero means don't process %-sequences in SPEC;
4334 in this case, % is treated as an ordinary character.
4335 This is used while substituting switches.
4336 INSWITCH nonzero also causes SPC not to terminate an argument.
4338 Value is zero unless a line was finished
4339 and the command on that line reported an error. */
4342 do_spec_1 (const char *spec, int inswitch, const char *soft_matched_part)
4344 const char *p = spec;
4351 /* If substituting a switch, treat all chars like letters.
4352 Otherwise, NL, SPC, TAB and % are special. */
4353 switch (inswitch ? 'a' : c)
4356 /* End of line: finish any pending argument,
4357 then run the pending command if one has been started. */
4360 obstack_1grow (&obstack, 0);
4361 string = obstack_finish (&obstack);
4362 if (this_is_library_file)
4363 string = find_file (string);
4364 store_arg (string, delete_this_arg, this_is_output_file);
4365 if (this_is_output_file)
4366 outfiles[input_file_number] = string;
4370 if (argbuf_index > 0 && !strcmp (argbuf[argbuf_index - 1], "|"))
4372 /* A `|' before the newline means use a pipe here,
4373 but only if -pipe was specified.
4374 Otherwise, execute now and don't pass the `|' as an arg. */
4377 input_from_pipe = 1;
4384 set_collect_gcc_options ();
4386 if (argbuf_index > 0)
4392 /* Reinitialize for a new command, and for a new argument. */
4395 delete_this_arg = 0;
4396 this_is_output_file = 0;
4397 this_is_library_file = 0;
4398 input_from_pipe = 0;
4402 /* End any pending argument. */
4405 obstack_1grow (&obstack, 0);
4406 string = obstack_finish (&obstack);
4407 if (this_is_library_file)
4408 string = find_file (string);
4409 store_arg (string, delete_this_arg, this_is_output_file);
4410 if (this_is_output_file)
4411 outfiles[input_file_number] = string;
4415 obstack_1grow (&obstack, c);
4421 /* Space or tab ends an argument if one is pending. */
4424 obstack_1grow (&obstack, 0);
4425 string = obstack_finish (&obstack);
4426 if (this_is_library_file)
4427 string = find_file (string);
4428 store_arg (string, delete_this_arg, this_is_output_file);
4429 if (this_is_output_file)
4430 outfiles[input_file_number] = string;
4432 /* Reinitialize for a new argument. */
4434 delete_this_arg = 0;
4435 this_is_output_file = 0;
4436 this_is_library_file = 0;
4443 fatal ("invalid specification! Bug in cc");
4446 obstack_grow (&obstack, input_basename, basename_length);
4451 obstack_grow (&obstack, input_basename, suffixed_basename_length);
4456 delete_this_arg = 2;
4459 /* Dump out the directories specified with LIBRARY_PATH,
4460 followed by the absolute directories
4461 that we search for startfiles. */
4464 struct prefix_list *pl = startfile_prefixes.plist;
4465 size_t bufsize = 100;
4466 char *buffer = xmalloc (bufsize);
4469 for (; pl; pl = pl->next)
4471 #ifdef RELATIVE_PREFIX_NOT_LINKDIR
4472 /* Used on systems which record the specified -L dirs
4473 and use them to search for dynamic linking. */
4474 /* Relative directories always come from -B,
4475 and it is better not to use them for searching
4476 at run time. In particular, stage1 loses. */
4477 if (!IS_ABSOLUTE_PATH (pl->prefix))
4480 /* Try subdirectory if there is one. */
4481 if (multilib_dir != NULL
4482 || (pl->os_multilib && multilib_os_dir != NULL))
4484 const char *multi_dir;
4486 multi_dir = pl->os_multilib ? multilib_os_dir
4488 if (machine_suffix && multilib_dir)
4490 if (strlen (pl->prefix) + strlen (machine_suffix)
4492 bufsize = (strlen (pl->prefix)
4493 + strlen (machine_suffix)) * 2 + 1;
4494 buffer = xrealloc (buffer, bufsize);
4495 strcpy (buffer, pl->prefix);
4496 strcat (buffer, machine_suffix);
4497 if (is_directory (buffer, multilib_dir, 1))
4499 do_spec_1 ("-L", 0, NULL);
4500 #ifdef SPACE_AFTER_L_OPTION
4501 do_spec_1 (" ", 0, NULL);
4503 do_spec_1 (buffer, 1, NULL);
4504 do_spec_1 (multilib_dir, 1, NULL);
4505 /* Make this a separate argument. */
4506 do_spec_1 (" ", 0, NULL);
4509 if (!pl->require_machine_suffix)
4511 if (is_directory (pl->prefix, multi_dir, 1))
4513 do_spec_1 ("-L", 0, NULL);
4514 #ifdef SPACE_AFTER_L_OPTION
4515 do_spec_1 (" ", 0, NULL);
4517 do_spec_1 (pl->prefix, 1, NULL);
4518 do_spec_1 (multi_dir, 1, NULL);
4519 /* Make this a separate argument. */
4520 do_spec_1 (" ", 0, NULL);
4526 if (is_directory (pl->prefix, machine_suffix, 1))
4528 do_spec_1 ("-L", 0, NULL);
4529 #ifdef SPACE_AFTER_L_OPTION
4530 do_spec_1 (" ", 0, NULL);
4532 do_spec_1 (pl->prefix, 1, NULL);
4533 /* Remove slash from machine_suffix. */
4534 if (strlen (machine_suffix) >= bufsize)
4535 bufsize = strlen (machine_suffix) * 2 + 1;
4536 buffer = xrealloc (buffer, bufsize);
4537 strcpy (buffer, machine_suffix);
4538 idx = strlen (buffer);
4539 if (IS_DIR_SEPARATOR (buffer[idx - 1]))
4540 buffer[idx - 1] = 0;
4541 do_spec_1 (buffer, 1, NULL);
4542 /* Make this a separate argument. */
4543 do_spec_1 (" ", 0, NULL);
4546 if (!pl->require_machine_suffix)
4548 if (is_directory (pl->prefix, "", 1))
4550 do_spec_1 ("-L", 0, NULL);
4551 #ifdef SPACE_AFTER_L_OPTION
4552 do_spec_1 (" ", 0, NULL);
4554 /* Remove slash from pl->prefix. */
4555 if (strlen (pl->prefix) >= bufsize)
4556 bufsize = strlen (pl->prefix) * 2 + 1;
4557 buffer = xrealloc (buffer, bufsize);
4558 strcpy (buffer, pl->prefix);
4559 idx = strlen (buffer);
4560 if (IS_DIR_SEPARATOR (buffer[idx - 1]))
4561 buffer[idx - 1] = 0;
4562 do_spec_1 (buffer, 1, NULL);
4563 /* Make this a separate argument. */
4564 do_spec_1 (" ", 0, NULL);
4573 /* %efoo means report an error with `foo' as error message
4574 and don't execute any more commands for this file. */
4578 while (*p != 0 && *p != '\n')
4580 buf = alloca (p - q + 1);
4581 strncpy (buf, q, p - q);
4588 /* %nfoo means report a notice with `foo' on stderr. */
4592 while (*p != 0 && *p != '\n')
4594 buf = alloca (p - q + 1);
4595 strncpy (buf, q, p - q);
4597 notice ("%s\n", buf);
4607 /* If save_temps_flag is off, and the HOST_BIT_BUCKET is
4608 defined, and it is not a directory, and it is
4609 writable, use it. Otherwise, treat this like any
4610 other temporary file. */
4612 if ((!save_temps_flag)
4613 && (stat (HOST_BIT_BUCKET, &st) == 0) && (!S_ISDIR (st.st_mode))
4614 && (access (HOST_BIT_BUCKET, W_OK) == 0))
4616 obstack_grow (&obstack, HOST_BIT_BUCKET,
4617 strlen (HOST_BIT_BUCKET));
4618 delete_this_arg = 0;
4623 goto create_temp_file;
4627 obstack_1grow (&obstack, '-');
4628 delete_this_arg = 0;
4631 /* consume suffix */
4632 while (*p == '.' || ISALPHA ((unsigned char) *p))
4634 if (p[0] == '%' && p[1] == 'O')
4639 goto create_temp_file;
4643 /* consume suffix */
4644 while (*p == '.' || ISALPHA ((unsigned char) *p))
4646 if (p[0] == '%' && p[1] == 'O')
4651 goto create_temp_file;
4657 struct temp_name *t;
4659 const char *suffix = p;
4660 char *saved_suffix = NULL;
4662 while (*p == '.' || ISALPHA ((unsigned char) *p))
4664 suffix_length = p - suffix;
4665 if (p[0] == '%' && p[1] == 'O')
4668 /* We don't support extra suffix characters after %O. */
4669 if (*p == '.' || ISALPHA ((unsigned char) *p))
4671 if (suffix_length == 0)
4672 suffix = TARGET_OBJECT_SUFFIX;
4676 = xmalloc (suffix_length
4677 + strlen (TARGET_OBJECT_SUFFIX));
4678 strncpy (saved_suffix, suffix, suffix_length);
4679 strcpy (saved_suffix + suffix_length,
4680 TARGET_OBJECT_SUFFIX);
4682 suffix_length += strlen (TARGET_OBJECT_SUFFIX);
4685 /* If the input_filename has the same suffix specified
4686 for the %g, %u, or %U, and -save-temps is specified,
4687 we could end up using that file as an intermediate
4688 thus clobbering the user's source file (.e.g.,
4689 gcc -save-temps foo.s would clobber foo.s with the
4690 output of cpp0). So check for this condition and
4691 generate a temp file as the intermediate. */
4693 if (save_temps_flag)
4695 temp_filename_length = basename_length + suffix_length;
4696 temp_filename = alloca (temp_filename_length + 1);
4697 strncpy ((char *) temp_filename, input_basename, basename_length);
4698 strncpy ((char *) temp_filename + basename_length, suffix,
4700 *((char *) temp_filename + temp_filename_length) = '\0';
4701 if (strcmp (temp_filename, input_filename) != 0)
4703 struct stat st_temp;
4705 /* Note, set_input() resets input_stat_set to 0. */
4706 if (input_stat_set == 0)
4708 input_stat_set = stat (input_filename, &input_stat);
4709 if (input_stat_set >= 0)
4713 /* If we have the stat for the input_filename
4714 and we can do the stat for the temp_filename
4715 then the they could still refer to the same
4716 file if st_dev/st_ino's are the same. */
4718 if (input_stat_set != 1
4719 || stat (temp_filename, &st_temp) < 0
4720 || input_stat.st_dev != st_temp.st_dev
4721 || input_stat.st_ino != st_temp.st_ino)
4723 temp_filename = save_string (temp_filename,
4724 temp_filename_length + 1);
4725 obstack_grow (&obstack, temp_filename,
4726 temp_filename_length);
4728 delete_this_arg = 0;
4734 /* See if we already have an association of %g/%u/%U and
4736 for (t = temp_names; t; t = t->next)
4737 if (t->length == suffix_length
4738 && strncmp (t->suffix, suffix, suffix_length) == 0
4739 && t->unique == (c == 'u' || c == 'U' || c == 'j'))
4742 /* Make a new association if needed. %u and %j
4744 if (t == 0 || c == 'u' || c == 'j')
4748 t = xmalloc (sizeof (struct temp_name));
4749 t->next = temp_names;
4752 t->length = suffix_length;
4755 t->suffix = saved_suffix;
4756 saved_suffix = NULL;
4759 t->suffix = save_string (suffix, suffix_length);
4760 t->unique = (c == 'u' || c == 'U' || c == 'j');
4761 temp_filename = make_temp_file (t->suffix);
4762 temp_filename_length = strlen (temp_filename);
4763 t->filename = temp_filename;
4764 t->filename_length = temp_filename_length;
4768 free (saved_suffix);
4770 obstack_grow (&obstack, t->filename, t->filename_length);
4771 delete_this_arg = 1;
4779 for (i = 0; (int) i < n_infiles; i++)
4780 store_arg (infiles[i].name, 0, 0);
4784 obstack_grow (&obstack, input_filename, input_filename_length);
4791 struct prefix_list *pl = include_prefixes.plist;
4793 if (gcc_exec_prefix)
4795 do_spec_1 ("-iprefix", 1, NULL);
4796 /* Make this a separate argument. */
4797 do_spec_1 (" ", 0, NULL);
4798 do_spec_1 (gcc_exec_prefix, 1, NULL);
4799 do_spec_1 (" ", 0, NULL);
4802 if (target_system_root_changed ||
4803 (target_system_root && target_sysroot_hdrs_suffix))
4805 do_spec_1 ("-isysroot", 1, NULL);
4806 /* Make this a separate argument. */
4807 do_spec_1 (" ", 0, NULL);
4808 do_spec_1 (target_system_root, 1, NULL);
4809 if (target_sysroot_hdrs_suffix)
4810 do_spec_1 (target_sysroot_hdrs_suffix, 1, NULL);
4811 do_spec_1 (" ", 0, NULL);
4814 for (; pl; pl = pl->next)
4816 do_spec_1 ("-isystem", 1, NULL);
4817 /* Make this a separate argument. */
4818 do_spec_1 (" ", 0, NULL);
4819 do_spec_1 (pl->prefix, 1, NULL);
4820 do_spec_1 (" ", 0, NULL);
4827 int max = n_infiles;
4828 max += lang_specific_extra_outfiles;
4830 for (i = 0; i < max; i++)
4832 store_arg (outfiles[i], 0, 0);
4837 obstack_grow (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX));
4842 this_is_library_file = 1;
4846 outfiles[input_file_number] = NULL;
4850 this_is_output_file = 1;
4855 int cur_index = argbuf_index;
4856 /* Handle the {...} following the %W. */
4859 p = handle_braces (p + 1);
4862 /* End any pending argument. */
4865 obstack_1grow (&obstack, 0);
4866 string = obstack_finish (&obstack);
4867 if (this_is_library_file)
4868 string = find_file (string);
4869 store_arg (string, delete_this_arg, this_is_output_file);
4870 if (this_is_output_file)
4871 outfiles[input_file_number] = string;
4874 /* If any args were output, mark the last one for deletion
4876 if (argbuf_index != cur_index)
4877 record_temp_file (argbuf[argbuf_index - 1], 0, 1);
4881 /* %x{OPTION} records OPTION for %X to output. */
4887 /* Skip past the option value and make a copy. */
4892 string = save_string (p1 + 1, p - p1 - 2);
4894 /* See if we already recorded this option. */
4895 for (i = 0; i < n_linker_options; i++)
4896 if (! strcmp (string, linker_options[i]))
4902 /* This option is new; add it. */
4903 add_linker_option (string, strlen (string));
4907 /* Dump out the options accumulated previously using %x. */
4909 for (i = 0; i < n_linker_options; i++)
4911 do_spec_1 (linker_options[i], 1, NULL);
4912 /* Make each accumulated option a separate argument. */
4913 do_spec_1 (" ", 0, NULL);
4917 /* Dump out the options accumulated previously using -Wa,. */
4919 for (i = 0; i < n_assembler_options; i++)
4921 do_spec_1 (assembler_options[i], 1, NULL);
4922 /* Make each accumulated option a separate argument. */
4923 do_spec_1 (" ", 0, NULL);
4927 /* Dump out the options accumulated previously using -Wp,. */
4929 for (i = 0; i < n_preprocessor_options; i++)
4931 do_spec_1 (preprocessor_options[i], 1, NULL);
4932 /* Make each accumulated option a separate argument. */
4933 do_spec_1 (" ", 0, NULL);
4937 /* Here are digits and numbers that just process
4938 a certain constant string as a spec. */
4941 value = do_spec_1 (cc1_spec, 0, NULL);
4947 value = do_spec_1 (cc1plus_spec, 0, NULL);
4953 value = do_spec_1 (asm_spec, 0, NULL);
4959 value = do_spec_1 (asm_final_spec, 0, NULL);
4966 const char *const spec
4967 = (input_file_compiler->cpp_spec
4968 ? input_file_compiler->cpp_spec
4970 value = do_spec_1 (spec, 0, NULL);
4977 value = do_spec_1 (endfile_spec, 0, NULL);
4983 value = do_spec_1 (link_spec, 0, NULL);
4989 value = do_spec_1 (lib_spec, 0, NULL);
4995 value = do_spec_1 (libgcc_spec, 0, NULL);
5001 if (multilib_dir && strcmp (multilib_dir, ".") != 0)
5007 len = strlen (multilib_dir);
5008 obstack_blank (&obstack, len + 1);
5009 p = obstack_next_free (&obstack) - (len + 1);
5012 for (q = multilib_dir; *q ; ++q, ++p)
5013 *p = (IS_DIR_SEPARATOR (*q) ? '_' : *q);
5018 /* We assume there is a directory
5019 separator at the end of this string. */
5020 if (target_system_root)
5022 obstack_grow (&obstack, target_system_root,
5023 strlen (target_system_root));
5024 if (target_sysroot_suffix)
5025 obstack_grow (&obstack, target_sysroot_suffix,
5026 strlen (target_sysroot_suffix));
5031 value = do_spec_1 (startfile_spec, 0, NULL);
5036 /* Here we define characters other than letters and digits. */
5039 p = handle_braces (p);
5045 p = handle_spec_function (p);
5051 obstack_1grow (&obstack, '%');
5058 while (p[len] && p[len] != ' ' && p[len] != '%')
5060 suffix_subst = save_string (p - 1, len + 1);
5065 /* Henceforth ignore the option(s) matching the pattern
5070 int have_wildcard = 0;
5073 while (p[len] && p[len] != ' ' && p[len] != '\t')
5076 if (p[len-1] == '*')
5079 for (i = 0; i < n_switches; i++)
5080 if (!strncmp (switches[i].part1, p, len - have_wildcard)
5081 && (have_wildcard || switches[i].part1[len] == '\0'))
5083 switches[i].live_cond = SWITCH_IGNORE;
5084 switches[i].validated = 1;
5092 if (soft_matched_part)
5094 do_spec_1 (soft_matched_part, 1, NULL);
5095 do_spec_1 (" ", 0, NULL);
5098 /* Catch the case where a spec string contains something like
5099 '%{foo:%*}'. ie there is no * in the pattern on the left
5100 hand side of the :. */
5101 error ("spec failure: '%%*' has not been initialized by pattern match");
5104 /* Process a string found as the value of a spec given by name.
5105 This feature allows individual machine descriptions
5106 to add and use their own specs.
5107 %[...] modifies -D options the way %P does;
5108 %(...) uses the spec unmodified. */
5110 error ("warning: use of obsolete %%[ operator in specs");
5113 const char *name = p;
5114 struct spec_list *sl;
5117 /* The string after the S/P is the name of a spec that is to be
5119 while (*p && *p != ')' && *p != ']')
5122 /* See if it's in the list. */
5123 for (len = p - name, sl = specs; sl; sl = sl->next)
5124 if (sl->name_len == len && !strncmp (sl->name, name, len))
5126 name = *(sl->ptr_spec);
5128 notice ("Processing spec %c%s%c, which is '%s'\n",
5129 c, sl->name, (c == '(') ? ')' : ']', name);
5138 value = do_spec_1 (name, 0, NULL);
5144 char *x = alloca (strlen (name) * 2 + 1);
5146 const char *y = name;
5149 /* Copy all of NAME into BUF, but put __ after
5150 every -D and at the end of each arg. */
5153 if (! strncmp (y, "-D", 2))
5164 && (*y == ' ' || *y == '\t' || *y == '='
5165 || *y == '}' || *y == 0))
5178 value = do_spec_1 (buf, 0, NULL);
5184 /* Discard the closing paren or bracket. */
5191 error ("spec failure: unrecognized spec option '%c'", c);
5197 /* Backslash: treat next character as ordinary. */
5202 /* Ordinary character: put it into the current argument. */
5203 obstack_1grow (&obstack, c);
5207 /* End of string. If we are processing a spec function, we need to
5208 end any pending argument. */
5209 if (processing_spec_function && arg_going)
5211 obstack_1grow (&obstack, 0);
5212 string = obstack_finish (&obstack);
5213 if (this_is_library_file)
5214 string = find_file (string);
5215 store_arg (string, delete_this_arg, this_is_output_file);
5216 if (this_is_output_file)
5217 outfiles[input_file_number] = string;
5224 /* Look up a spec function. */
5226 static const struct spec_function *
5227 lookup_spec_function (const char *name)
5229 static const struct spec_function * const spec_function_tables[] =
5231 static_spec_functions,
5232 lang_specific_spec_functions,
5234 const struct spec_function *sf;
5237 for (i = 0; i < ARRAY_SIZE (spec_function_tables); i++)
5239 for (sf = spec_function_tables[i]; sf->name != NULL; sf++)
5240 if (strcmp (sf->name, name) == 0)
5247 /* Evaluate a spec function. */
5250 eval_spec_function (const char *func, const char *args)
5252 const struct spec_function *sf;
5253 const char *funcval;
5255 /* Saved spec processing context. */
5256 int save_argbuf_index;
5257 int save_argbuf_length;
5258 const char **save_argbuf;
5261 int save_delete_this_arg;
5262 int save_this_is_output_file;
5263 int save_this_is_library_file;
5264 int save_input_from_pipe;
5265 const char *save_suffix_subst;
5268 sf = lookup_spec_function (func);
5270 fatal ("unknown spec function `%s'", func);
5272 /* Push the spec processing context. */
5273 save_argbuf_index = argbuf_index;
5274 save_argbuf_length = argbuf_length;
5275 save_argbuf = argbuf;
5277 save_arg_going = arg_going;
5278 save_delete_this_arg = delete_this_arg;
5279 save_this_is_output_file = this_is_output_file;
5280 save_this_is_library_file = this_is_library_file;
5281 save_input_from_pipe = input_from_pipe;
5282 save_suffix_subst = suffix_subst;
5284 /* Create a new spec processing context, and build the function
5288 if (do_spec_2 (args) < 0)
5289 fatal ("error in args to spec function `%s'", func);
5291 /* argbuf_index is an index for the next argument to be inserted, and
5292 so contains the count of the args already inserted. */
5294 funcval = (*sf->func) (argbuf_index, argbuf);
5296 /* Pop the spec processing context. */
5297 argbuf_index = save_argbuf_index;
5298 argbuf_length = save_argbuf_length;
5300 argbuf = save_argbuf;
5302 arg_going = save_arg_going;
5303 delete_this_arg = save_delete_this_arg;
5304 this_is_output_file = save_this_is_output_file;
5305 this_is_library_file = save_this_is_library_file;
5306 input_from_pipe = save_input_from_pipe;
5307 suffix_subst = save_suffix_subst;
5312 /* Handle a spec function call of the form:
5316 ARGS is processed as a spec in a separate context and split into an
5317 argument vector in the normal fashion. The function returns a string
5318 containing a spec which we then process in the caller's context, or
5319 NULL if no processing is required. */
5322 handle_spec_function (const char *p)
5325 const char *endp, *funcval;
5328 processing_spec_function++;
5330 /* Get the function name. */
5331 for (endp = p; *endp != '\0'; endp++)
5333 if (*endp == '(') /* ) */
5335 /* Only allow [A-Za-z0-9], -, and _ in function names. */
5336 if (!ISALNUM (*endp) && !(*endp == '-' || *endp == '_'))
5337 fatal ("malformed spec function name");
5339 if (*endp != '(') /* ) */
5340 fatal ("no arguments for spec function");
5341 func = save_string (p, endp - p);
5344 /* Get the arguments. */
5345 for (count = 0; *endp != '\0'; endp++)
5354 else if (*endp == '(') /* ) */
5359 fatal ("malformed spec function arguments");
5360 args = save_string (p, endp - p);
5363 /* p now points to just past the end of the spec function expression. */
5365 funcval = eval_spec_function (func, args);
5366 if (funcval != NULL && do_spec_1 (funcval, 0, NULL) < 0)
5372 processing_spec_function--;
5377 /* Inline subroutine of handle_braces. Returns true if the current
5378 input suffix matches the atom bracketed by ATOM and END_ATOM. */
5380 input_suffix_matches (const char *atom, const char *end_atom)
5382 return (input_suffix
5383 && !strncmp (input_suffix, atom, end_atom - atom)
5384 && input_suffix[end_atom - atom] == '\0');
5387 /* Inline subroutine of handle_braces. Returns true if a switch
5388 matching the atom bracketed by ATOM and END_ATOM appeared on the
5391 switch_matches (const char *atom, const char *end_atom, int starred)
5394 int len = end_atom - atom;
5395 int plen = starred ? len : -1;
5397 for (i = 0; i < n_switches; i++)
5398 if (!strncmp (switches[i].part1, atom, len)
5399 && (starred || switches[i].part1[len] == '\0')
5400 && check_live_switch (i, plen))
5406 /* Inline subroutine of handle_braces. Mark all of the switches which
5407 match ATOM (extends to END_ATOM; STARRED indicates whether there
5408 was a star after the atom) for later processing. */
5410 mark_matching_switches (const char *atom, const char *end_atom, int starred)
5413 int len = end_atom - atom;
5414 int plen = starred ? len : -1;
5416 for (i = 0; i < n_switches; i++)
5417 if (!strncmp (switches[i].part1, atom, len)
5418 && (starred || switches[i].part1[len] == '\0')
5419 && check_live_switch (i, plen))
5420 switches[i].ordering = 1;
5423 /* Inline subroutine of handle_braces. Process all the currently
5424 marked switches through give_switch, and clear the marks. */
5426 process_marked_switches (void)
5430 for (i = 0; i < n_switches; i++)
5431 if (switches[i].ordering == 1)
5433 switches[i].ordering = 0;
5438 /* Handle a %{ ... } construct. P points just inside the leading {.
5439 Returns a pointer one past the end of the brace block, or 0
5440 if we call do_spec_1 and that returns -1. */
5443 handle_braces (const char *p)
5445 const char *atom, *end_atom;
5446 const char *d_atom = NULL, *d_end_atom = NULL;
5453 bool a_must_be_last = false;
5454 bool ordered_set = false;
5455 bool disjunct_set = false;
5456 bool disj_matched = false;
5457 bool disj_starred = true;
5458 bool n_way_choice = false;
5459 bool n_way_matched = false;
5461 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
5468 /* Scan one "atom" (S in the description above of %{}, possibly
5469 with !, ., or * modifiers). */
5470 a_matched = a_is_suffix = a_is_starred = a_is_negated = false;
5474 p++, a_is_negated = true;
5478 p++, a_is_suffix = true;
5481 while (ISIDNUM(*p) || *p == '-' || *p == '+' || *p == '='
5482 || *p == ',' || *p == '.' || *p == '@')
5487 p++, a_is_starred = 1;
5490 if (*p == '&' || *p == '}')
5492 /* Substitute the switch(es) indicated by the current atom. */
5494 if (disjunct_set || n_way_choice || a_is_negated || a_is_suffix
5495 || atom == end_atom)
5498 mark_matching_switches (atom, end_atom, a_is_starred);
5501 process_marked_switches ();
5503 else if (*p == '|' || *p == ':')
5505 /* Substitute some text if the current atom appears as a switch
5507 disjunct_set = true;
5511 if (atom == end_atom)
5513 if (!n_way_choice || disj_matched || *p == '|'
5514 || a_is_negated || a_is_suffix || a_is_starred)
5517 /* An empty term may appear as the last choice of an
5518 N-way choice set; it means "otherwise". */
5519 a_must_be_last = true;
5520 disj_matched = !n_way_matched;
5521 disj_starred = false;
5525 if (a_is_suffix && a_is_starred)
5529 disj_starred = false;
5531 /* Don't bother testing this atom if we already have a
5533 if (!disj_matched && !n_way_matched)
5536 a_matched = input_suffix_matches (atom, end_atom);
5538 a_matched = switch_matches (atom, end_atom, a_is_starred);
5540 if (a_matched != a_is_negated)
5542 disj_matched = true;
5544 d_end_atom = end_atom;
5551 /* Found the body, that is, the text to substitute if the
5552 current disjunction matches. */
5553 p = process_brace_body (p + 1, d_atom, d_end_atom, disj_starred,
5554 disj_matched && !n_way_matched);
5558 /* If we have an N-way choice, reset state for the next
5562 n_way_choice = true;
5563 n_way_matched |= disj_matched;
5564 disj_matched = false;
5565 disj_starred = true;
5566 d_atom = d_end_atom = NULL;
5573 while (*p++ != '}');
5580 /* Subroutine of handle_braces. Scan and process a brace substitution body
5581 (X in the description of %{} syntax). P points one past the colon;
5582 ATOM and END_ATOM bracket the first atom which was found to be true
5583 (present) in the current disjunction; STARRED indicates whether all
5584 the atoms in the current disjunction were starred (for syntax validation);
5585 MATCHED indicates whether the disjunction matched or not, and therefore
5586 whether or not the body is to be processed through do_spec_1 or just
5587 skipped. Returns a pointer to the closing } or ;, or 0 if do_spec_1
5591 process_brace_body (const char *p, const char *atom, const char *end_atom,
5592 int starred, int matched)
5594 const char *body, *end_body;
5595 unsigned int nesting_level;
5596 bool have_subst = false;
5598 /* Locate the closing } or ;, honoring nested braces.
5599 Trim trailing whitespace. */
5608 if (!--nesting_level)
5611 else if (*p == ';' && nesting_level == 1)
5613 else if (*p == '%' && p[1] == '*' && nesting_level == 1)
5615 else if (*p == '\0')
5621 while (end_body[-1] == ' ' || end_body[-1] == '\t')
5624 if (have_subst && !starred)
5629 /* Copy the substitution body to permanent storage and execute it.
5630 If have_subst is false, this is a simple matter of running the
5631 body through do_spec_1... */
5632 char *string = save_string (body, end_body - body);
5635 if (do_spec_1 (string, 0, NULL) < 0)
5640 /* ... but if have_subst is true, we have to process the
5641 body once for each matching switch, with %* set to the
5642 variant part of the switch. */
5643 unsigned int hard_match_len = end_atom - atom;
5646 for (i = 0; i < n_switches; i++)
5647 if (!strncmp (switches[i].part1, atom, hard_match_len)
5648 && check_live_switch (i, hard_match_len))
5650 if (do_spec_1 (string, 0,
5651 &switches[i].part1[hard_match_len]) < 0)
5653 /* Pass any arguments this switch has. */
5655 suffix_subst = NULL;
5663 /* Return 0 iff switch number SWITCHNUM is obsoleted by a later switch
5664 on the command line. PREFIX_LENGTH is the length of XXX in an {XXX*}
5665 spec, or -1 if either exact match or %* is used.
5667 A -O switch is obsoleted by a later -O switch. A -f, -m, or -W switch
5668 whose value does not begin with "no-" is obsoleted by the same value
5669 with the "no-", similarly for a switch with the "no-" prefix. */
5672 check_live_switch (int switchnum, int prefix_length)
5674 const char *name = switches[switchnum].part1;
5677 /* In the common case of {<at-most-one-letter>*}, a negating
5678 switch would always match, so ignore that case. We will just
5679 send the conflicting switches to the compiler phase. */
5680 if (prefix_length >= 0 && prefix_length <= 1)
5683 /* If we already processed this switch and determined if it was
5684 live or not, return our past determination. */
5685 if (switches[switchnum].live_cond != 0)
5686 return switches[switchnum].live_cond > 0;
5688 /* Now search for duplicate in a manner that depends on the name. */
5692 for (i = switchnum + 1; i < n_switches; i++)
5693 if (switches[i].part1[0] == 'O')
5695 switches[switchnum].validated = 1;
5696 switches[switchnum].live_cond = SWITCH_FALSE;
5701 case 'W': case 'f': case 'm':
5702 if (! strncmp (name + 1, "no-", 3))
5704 /* We have Xno-YYY, search for XYYY. */
5705 for (i = switchnum + 1; i < n_switches; i++)
5706 if (switches[i].part1[0] == name[0]
5707 && ! strcmp (&switches[i].part1[1], &name[4]))
5709 switches[switchnum].validated = 1;
5710 switches[switchnum].live_cond = SWITCH_FALSE;
5716 /* We have XYYY, search for Xno-YYY. */
5717 for (i = switchnum + 1; i < n_switches; i++)
5718 if (switches[i].part1[0] == name[0]
5719 && switches[i].part1[1] == 'n'
5720 && switches[i].part1[2] == 'o'
5721 && switches[i].part1[3] == '-'
5722 && !strcmp (&switches[i].part1[4], &name[1]))
5724 switches[switchnum].validated = 1;
5725 switches[switchnum].live_cond = SWITCH_FALSE;
5732 /* Otherwise the switch is live. */
5733 switches[switchnum].live_cond = SWITCH_LIVE;
5737 /* Pass a switch to the current accumulating command
5738 in the same form that we received it.
5739 SWITCHNUM identifies the switch; it is an index into
5740 the vector of switches gcc received, which is `switches'.
5741 This cannot fail since it never finishes a command line.
5743 If OMIT_FIRST_WORD is nonzero, then we omit .part1 of the argument. */
5746 give_switch (int switchnum, int omit_first_word)
5748 if (switches[switchnum].live_cond == SWITCH_IGNORE)
5751 if (!omit_first_word)
5753 do_spec_1 ("-", 0, NULL);
5754 do_spec_1 (switches[switchnum].part1, 1, NULL);
5757 if (switches[switchnum].args != 0)
5760 for (p = switches[switchnum].args; *p; p++)
5762 const char *arg = *p;
5764 do_spec_1 (" ", 0, NULL);
5767 unsigned length = strlen (arg);
5770 while (length-- && !IS_DIR_SEPARATOR (arg[length]))
5771 if (arg[length] == '.')
5773 ((char *)arg)[length] = 0;
5777 do_spec_1 (arg, 1, NULL);
5779 ((char *)arg)[length] = '.';
5780 do_spec_1 (suffix_subst, 1, NULL);
5783 do_spec_1 (arg, 1, NULL);
5787 do_spec_1 (" ", 0, NULL);
5788 switches[switchnum].validated = 1;
5791 /* Search for a file named NAME trying various prefixes including the
5792 user's -B prefix and some standard ones.
5793 Return the absolute file name found. If nothing is found, return NAME. */
5796 find_file (const char *name)
5800 /* Try multilib_dir if it is defined. */
5801 if (multilib_os_dir != NULL)
5803 newname = find_a_file (&startfile_prefixes, name, R_OK, 1);
5805 /* If we don't find it in the multi library dir, then fall
5806 through and look for it in the normal places. */
5807 if (newname != NULL)
5811 newname = find_a_file (&startfile_prefixes, name, R_OK, 0);
5812 return newname ? newname : name;
5815 /* Determine whether a directory exists. If LINKER, return 0 for
5816 certain fixed names not needed by the linker. If not LINKER, it is
5817 only important to return 0 if the host machine has a small ARG_MAX
5821 is_directory (const char *path1, const char *path2, int linker)
5823 int len1 = strlen (path1);
5824 int len2 = strlen (path2);
5825 char *path = alloca (3 + len1 + len2);
5829 #ifndef SMALL_ARG_MAX
5834 /* Construct the path from the two parts. Ensure the string ends with "/.".
5835 The resulting path will be a directory even if the given path is a
5837 memcpy (path, path1, len1);
5838 memcpy (path + len1, path2, len2);
5839 cp = path + len1 + len2;
5840 if (!IS_DIR_SEPARATOR (cp[-1]))
5841 *cp++ = DIR_SEPARATOR;
5845 /* Exclude directories that the linker is known to search. */
5848 && strcmp (path, concat (dir_separator_str, "lib",
5849 dir_separator_str, ".", NULL)) == 0)
5851 && strcmp (path, concat (dir_separator_str, "usr",
5852 dir_separator_str, "lib",
5853 dir_separator_str, ".", NULL)) == 0)))
5856 return (stat (path, &st) >= 0 && S_ISDIR (st.st_mode));
5859 /* Set up the various global variables to indicate that we're processing
5860 the input file named FILENAME. */
5863 set_input (const char *filename)
5867 input_filename = filename;
5868 input_filename_length = strlen (input_filename);
5870 input_basename = input_filename;
5871 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
5872 /* Skip drive name so 'x:foo' is handled properly. */
5873 if (input_basename[1] == ':')
5874 input_basename += 2;
5876 for (p = input_basename; *p; p++)
5877 if (IS_DIR_SEPARATOR (*p))
5878 input_basename = p + 1;
5880 /* Find a suffix starting with the last period,
5881 and set basename_length to exclude that suffix. */
5882 basename_length = strlen (input_basename);
5883 suffixed_basename_length = basename_length;
5884 p = input_basename + basename_length;
5885 while (p != input_basename && *p != '.')
5887 if (*p == '.' && p != input_basename)
5889 basename_length = p - input_basename;
5890 input_suffix = p + 1;
5895 /* If a spec for 'g', 'u', or 'U' is seen with -save-temps then
5896 we will need to do a stat on the input_filename. The
5897 INPUT_STAT_SET signals that the stat is needed. */
5901 /* On fatal signals, delete all the temporary files. */
5904 fatal_error (int signum)
5906 signal (signum, SIG_DFL);
5907 delete_failure_queue ();
5908 delete_temp_files ();
5909 /* Get the same signal again, this time not handled,
5910 so its normal effect occurs. */
5911 kill (getpid (), signum);
5914 extern int main (int, const char **);
5917 main (int argc, const char **argv)
5921 int linker_was_run = 0;
5922 int num_linker_inputs = 0;
5923 char *explicit_link_files;
5926 struct user_specs *uptr;
5928 p = argv[0] + strlen (argv[0]);
5929 while (p != argv[0] && !IS_DIR_SEPARATOR (p[-1]))
5933 xmalloc_set_program_name (programname);
5935 #ifdef GCC_DRIVER_HOST_INITIALIZATION
5936 /* Perform host dependent initialization when needed. */
5937 GCC_DRIVER_HOST_INITIALIZATION;
5940 gcc_init_libintl ();
5942 if (signal (SIGINT, SIG_IGN) != SIG_IGN)
5943 signal (SIGINT, fatal_error);
5945 if (signal (SIGHUP, SIG_IGN) != SIG_IGN)
5946 signal (SIGHUP, fatal_error);
5948 if (signal (SIGTERM, SIG_IGN) != SIG_IGN)
5949 signal (SIGTERM, fatal_error);
5951 if (signal (SIGPIPE, SIG_IGN) != SIG_IGN)
5952 signal (SIGPIPE, fatal_error);
5955 /* We *MUST* set SIGCHLD to SIG_DFL so that the wait4() call will
5956 receive the signal. A different setting is inheritable */
5957 signal (SIGCHLD, SIG_DFL);
5960 /* Allocate the argument vector. */
5963 obstack_init (&obstack);
5965 /* Build multilib_select, et. al from the separate lines that make up each
5966 multilib selection. */
5968 const char *const *q = multilib_raw;
5971 obstack_init (&multilib_obstack);
5972 while ((p = *q++) != (char *) 0)
5973 obstack_grow (&multilib_obstack, p, strlen (p));
5975 obstack_1grow (&multilib_obstack, 0);
5976 multilib_select = obstack_finish (&multilib_obstack);
5978 q = multilib_matches_raw;
5979 while ((p = *q++) != (char *) 0)
5980 obstack_grow (&multilib_obstack, p, strlen (p));
5982 obstack_1grow (&multilib_obstack, 0);
5983 multilib_matches = obstack_finish (&multilib_obstack);
5985 q = multilib_exclusions_raw;
5986 while ((p = *q++) != (char *) 0)
5987 obstack_grow (&multilib_obstack, p, strlen (p));
5989 obstack_1grow (&multilib_obstack, 0);
5990 multilib_exclusions = obstack_finish (&multilib_obstack);
5993 for (i = 0; i < ARRAY_SIZE (multilib_defaults_raw); i++)
5996 obstack_1grow (&multilib_obstack, ' ');
5997 obstack_grow (&multilib_obstack,
5998 multilib_defaults_raw[i],
5999 strlen (multilib_defaults_raw[i]));
6003 obstack_1grow (&multilib_obstack, 0);
6004 multilib_defaults = obstack_finish (&multilib_obstack);
6007 /* Set up to remember the pathname of gcc and any options
6008 needed for collect. We use argv[0] instead of programname because
6009 we need the complete pathname. */
6010 obstack_init (&collect_obstack);
6011 obstack_grow (&collect_obstack, "COLLECT_GCC=", sizeof ("COLLECT_GCC=") - 1);
6012 obstack_grow (&collect_obstack, argv[0], strlen (argv[0]) + 1);
6013 putenv (obstack_finish (&collect_obstack));
6015 #ifdef INIT_ENVIRONMENT
6016 /* Set up any other necessary machine specific environment variables. */
6017 putenv (INIT_ENVIRONMENT);
6020 /* Make a table of what switches there are (switches, n_switches).
6021 Make a table of specified input files (infiles, n_infiles).
6022 Decode switches that are handled locally. */
6024 process_command (argc, argv);
6026 /* Initialize the vector of specs to just the default.
6027 This means one element containing 0s, as a terminator. */
6029 compilers = xmalloc (sizeof default_compilers);
6030 memcpy (compilers, default_compilers, sizeof default_compilers);
6031 n_compilers = n_default_compilers;
6033 /* Read specs from a file if there is one. */
6035 machine_suffix = concat (spec_machine, dir_separator_str,
6036 spec_version, dir_separator_str, NULL);
6037 just_machine_suffix = concat (spec_machine, dir_separator_str, NULL);
6039 specs_file = find_a_file (&startfile_prefixes, "specs", R_OK, 0);
6040 /* Read the specs file unless it is a default one. */
6041 if (specs_file != 0 && strcmp (specs_file, "specs"))
6042 read_specs (specs_file, TRUE);
6046 /* We need to check standard_exec_prefix/just_machine_suffix/specs
6047 for any override of as, ld and libraries. */
6048 specs_file = alloca (strlen (standard_exec_prefix)
6049 + strlen (just_machine_suffix) + sizeof ("specs"));
6051 strcpy (specs_file, standard_exec_prefix);
6052 strcat (specs_file, just_machine_suffix);
6053 strcat (specs_file, "specs");
6054 if (access (specs_file, R_OK) == 0)
6055 read_specs (specs_file, TRUE);
6057 /* Process any configure-time defaults specified for the command line
6058 options, via OPTION_DEFAULT_SPECS. */
6059 for (i = 0; i < ARRAY_SIZE (option_default_specs); i++)
6060 do_option_spec (option_default_specs[i].name,
6061 option_default_specs[i].spec);
6063 /* Process DRIVER_SELF_SPECS, adding any new options to the end
6064 of the command line. */
6066 for (i = 0; i < ARRAY_SIZE (driver_self_specs); i++)
6067 do_self_spec (driver_self_specs[i]);
6069 /* If not cross-compiling, look for executables in the standard
6071 if (*cross_compile == '0')
6073 if (*md_exec_prefix)
6075 add_prefix (&exec_prefixes, md_exec_prefix, "GCC",
6076 PREFIX_PRIORITY_LAST, 0, NULL, 0);
6080 /* Process sysroot_suffix_spec. */
6081 if (*sysroot_suffix_spec != 0
6082 && do_spec_2 (sysroot_suffix_spec) == 0)
6084 if (argbuf_index > 1)
6085 error ("spec failure: more than one arg to SYSROOT_SUFFIX_SPEC.");
6086 else if (argbuf_index == 1)
6087 target_sysroot_suffix = xstrdup (argbuf[argbuf_index -1]);
6090 /* Process sysroot_hdrs_suffix_spec. */
6091 if (*sysroot_hdrs_suffix_spec != 0
6092 && do_spec_2 (sysroot_hdrs_suffix_spec) == 0)
6094 if (argbuf_index > 1)
6095 error ("spec failure: more than one arg to SYSROOT_HEADERS_SUFFIX_SPEC.");
6096 else if (argbuf_index == 1)
6097 target_sysroot_hdrs_suffix = xstrdup (argbuf[argbuf_index -1]);
6100 /* Look for startfiles in the standard places. */
6101 if (*startfile_prefix_spec != 0
6102 && do_spec_2 (startfile_prefix_spec) == 0
6103 && do_spec_1 (" ", 0, NULL) == 0)
6106 for (ndx = 0; ndx < argbuf_index; ndx++)
6107 add_sysrooted_prefix (&startfile_prefixes, argbuf[ndx], "BINUTILS",
6108 PREFIX_PRIORITY_LAST, 0, NULL, 1);
6110 /* We should eventually get rid of all these and stick to
6111 startfile_prefix_spec exclusively. */
6112 else if (*cross_compile == '0' || target_system_root)
6114 if (*md_exec_prefix)
6115 add_sysrooted_prefix (&startfile_prefixes, md_exec_prefix, "GCC",
6116 PREFIX_PRIORITY_LAST, 0, NULL, 1);
6118 if (*md_startfile_prefix)
6119 add_sysrooted_prefix (&startfile_prefixes, md_startfile_prefix,
6120 "GCC", PREFIX_PRIORITY_LAST, 0, NULL, 1);
6122 if (*md_startfile_prefix_1)
6123 add_sysrooted_prefix (&startfile_prefixes, md_startfile_prefix_1,
6124 "GCC", PREFIX_PRIORITY_LAST, 0, NULL, 1);
6126 /* If standard_startfile_prefix is relative, base it on
6127 standard_exec_prefix. This lets us move the installed tree
6128 as a unit. If GCC_EXEC_PREFIX is defined, base
6129 standard_startfile_prefix on that as well.
6131 If the prefix is relative, only search it for native compilers;
6132 otherwise we will search a directory containing host libraries. */
6133 if (IS_ABSOLUTE_PATH (standard_startfile_prefix))
6134 add_sysrooted_prefix (&startfile_prefixes,
6135 standard_startfile_prefix, "BINUTILS",
6136 PREFIX_PRIORITY_LAST, 0, NULL, 1);
6137 else if (*cross_compile == '0')
6139 if (gcc_exec_prefix)
6140 add_prefix (&startfile_prefixes,
6141 concat (gcc_exec_prefix, machine_suffix,
6142 standard_startfile_prefix, NULL),
6143 NULL, PREFIX_PRIORITY_LAST, 0, NULL, 1);
6144 add_prefix (&startfile_prefixes,
6145 concat (standard_exec_prefix,
6147 standard_startfile_prefix, NULL),
6148 NULL, PREFIX_PRIORITY_LAST, 0, NULL, 1);
6151 add_sysrooted_prefix (&startfile_prefixes, standard_startfile_prefix_1,
6152 "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL, 1);
6153 add_sysrooted_prefix (&startfile_prefixes, standard_startfile_prefix_2,
6154 "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL, 1);
6155 #if 0 /* Can cause surprises, and one can use -B./ instead. */
6156 add_prefix (&startfile_prefixes, "./", NULL,
6157 PREFIX_PRIORITY_LAST, 1, NULL, 0);
6161 /* Process any user specified specs in the order given on the command
6163 for (uptr = user_specs_head; uptr; uptr = uptr->next)
6165 char *filename = find_a_file (&startfile_prefixes, uptr->filename,
6167 read_specs (filename ? filename : uptr->filename, FALSE);
6170 /* If we have a GCC_EXEC_PREFIX envvar, modify it for cpp's sake. */
6171 if (gcc_exec_prefix)
6172 gcc_exec_prefix = concat (gcc_exec_prefix, spec_machine, dir_separator_str,
6173 spec_version, dir_separator_str, NULL);
6175 /* Now we have the specs.
6176 Set the `valid' bits for switches that match anything in any spec. */
6178 validate_all_switches ();
6180 /* Now that we have the switches and the specs, set
6181 the subdirectory based on the options. */
6182 set_multilib_dir ();
6184 /* Warn about any switches that no pass was interested in. */
6186 for (i = 0; (int) i < n_switches; i++)
6187 if (! switches[i].validated)
6188 error ("unrecognized option `-%s'", switches[i].part1);
6190 /* Obey some of the options. */
6192 if (print_search_dirs)
6194 printf (_("install: %s%s\n"), standard_exec_prefix, machine_suffix);
6195 printf (_("programs: %s\n"), build_search_list (&exec_prefixes, "", 0));
6196 printf (_("libraries: %s\n"), build_search_list (&startfile_prefixes, "", 0));
6200 if (print_file_name)
6202 printf ("%s\n", find_file (print_file_name));
6206 if (print_prog_name)
6208 char *newname = find_a_file (&exec_prefixes, print_prog_name, X_OK, 0);
6209 printf ("%s\n", (newname ? newname : print_prog_name));
6213 if (print_multi_lib)
6215 print_multilib_info ();
6219 if (print_multi_directory)
6221 if (multilib_dir == NULL)
6224 printf ("%s\n", multilib_dir);
6228 if (print_multi_os_directory)
6230 if (multilib_os_dir == NULL)
6233 printf ("%s\n", multilib_os_dir);
6237 if (target_help_flag)
6239 /* Print if any target specific options. */
6241 /* We do not exit here. Instead we have created a fake input file
6242 called 'target-dummy' which needs to be compiled, and we pass this
6243 on to the various sub-processes, along with the --target-help
6247 if (print_help_list)
6253 printf (_("\nFor bug reporting instructions, please see:\n"));
6254 printf ("%s.\n", bug_report_url);
6259 /* We do not exit here. Instead we have created a fake input file
6260 called 'help-dummy' which needs to be compiled, and we pass this
6261 on the various sub-processes, along with the --help switch. */
6269 notice ("Configured with: %s\n", configuration_arguments);
6271 #ifdef THREAD_MODEL_SPEC
6272 /* We could have defined THREAD_MODEL_SPEC to "%*" by default,
6273 but there's no point in doing all this processing just to get
6274 thread_model back. */
6275 obstack_init (&obstack);
6276 do_spec_1 (THREAD_MODEL_SPEC, 0, thread_model);
6277 obstack_1grow (&obstack, '\0');
6278 thrmod = obstack_finish (&obstack);
6280 thrmod = thread_model;
6283 notice ("Thread model: %s\n", thrmod);
6285 /* compiler_version is truncated at the first space when initialized
6286 from version string, so truncate version_string at the first space
6287 before comparing. */
6288 for (n = 0; version_string[n]; n++)
6289 if (version_string[n] == ' ')
6292 if (! strncmp (version_string, compiler_version, n)
6293 && compiler_version[n] == 0)
6294 notice ("gcc version %s\n", version_string);
6296 notice ("gcc driver version %s executing gcc version %s\n",
6297 version_string, compiler_version);
6303 if (n_infiles == added_libraries)
6304 fatal ("no input files");
6306 /* Make a place to record the compiler output file names
6307 that correspond to the input files. */
6310 i += lang_specific_extra_outfiles;
6311 outfiles = xcalloc (i, sizeof (char *));
6313 /* Record which files were specified explicitly as link input. */
6315 explicit_link_files = xcalloc (1, n_infiles);
6319 int lang_n_infiles = 0;
6320 for (i = 0; (int) i < n_infiles; i++)
6322 const char *name = infiles[i].name;
6323 struct compiler *compiler
6324 = lookup_compiler (name, strlen (name), infiles[i].language);
6325 if (compiler == NULL)
6326 error ("%s: linker input file unused because linking not done",
6328 else if (lang_n_infiles > 0 && compiler != input_file_compiler)
6329 fatal ("cannot specify -o with -c or -S and multiple languages");
6333 input_file_compiler = compiler;
6338 for (i = 0; (int) i < (combine_inputs ? 1 : n_infiles); i++)
6340 int this_file_error = 0;
6342 /* Tell do_spec what to substitute for %i. */
6344 input_file_number = i;
6345 set_input (infiles[i].name);
6347 /* Use the same thing in %o, unless cp->spec says otherwise. */
6349 outfiles[i] = input_filename;
6351 /* Figure out which compiler from the file's suffix. */
6353 if (! combine_inputs)
6355 = lookup_compiler (infiles[i].name, input_filename_length,
6356 infiles[i].language);
6358 if (input_file_compiler)
6360 /* Ok, we found an applicable compiler. Run its spec. */
6362 if (input_file_compiler->spec[0] == '#')
6364 error ("%s: %s compiler not installed on this system",
6365 input_filename, &input_file_compiler->spec[1]);
6366 this_file_error = 1;
6370 value = do_spec (input_file_compiler->spec);
6372 this_file_error = 1;
6376 /* If this file's name does not contain a recognized suffix,
6377 record it as explicit linker input. */
6380 explicit_link_files[i] = 1;
6382 /* Clear the delete-on-failure queue, deleting the files in it
6383 if this compilation failed. */
6385 if (this_file_error)
6387 delete_failure_queue ();
6390 /* If this compilation succeeded, don't delete those files later. */
6391 clear_failure_queue ();
6394 /* Reset the output file name to the first input file name, for use
6395 with %b in LINK_SPEC on a target that prefers not to emit a.out
6398 set_input (infiles[0].name);
6400 if (error_count == 0)
6402 /* Make sure INPUT_FILE_NUMBER points to first available open
6404 input_file_number = n_infiles;
6405 if (lang_specific_pre_link ())
6409 /* Determine if there are any linker input files. */
6410 num_linker_inputs = 0;
6411 for (i = 0; (int) i < n_infiles; i++)
6412 if (explicit_link_files[i] || outfiles[i] != NULL)
6413 num_linker_inputs++;
6415 /* Run ld to link all the compiler output files. */
6417 if (num_linker_inputs > 0 && error_count == 0)
6419 int tmp = execution_count;
6421 /* We'll use ld if we can't find collect2. */
6422 if (! strcmp (linker_name_spec, "collect2"))
6424 char *s = find_a_file (&exec_prefixes, "collect2", X_OK, 0);
6426 linker_name_spec = "ld";
6428 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
6430 putenv_from_prefixes (&exec_prefixes, "COMPILER_PATH");
6431 putenv_from_prefixes (&startfile_prefixes, LIBRARY_PATH_ENV);
6433 value = do_spec (link_command_spec);
6436 linker_was_run = (tmp != execution_count);
6439 /* If options said don't run linker,
6440 complain about input files to be given to the linker. */
6442 if (! linker_was_run && error_count == 0)
6443 for (i = 0; (int) i < n_infiles; i++)
6444 if (explicit_link_files[i])
6445 error ("%s: linker input file unused because linking not done",
6448 /* Delete some or all of the temporary files we made. */
6451 delete_failure_queue ();
6452 delete_temp_files ();
6454 if (print_help_list)
6456 printf (("\nFor bug reporting instructions, please see:\n"));
6457 printf ("%s\n", bug_report_url);
6460 return (signal_count != 0 ? 2
6461 : error_count > 0 ? (pass_exit_codes ? greatest_status : 1)
6465 /* Find the proper compilation spec for the file name NAME,
6466 whose length is LENGTH. LANGUAGE is the specified language,
6467 or 0 if this file is to be passed to the linker. */
6469 static struct compiler *
6470 lookup_compiler (const char *name, size_t length, const char *language)
6472 struct compiler *cp;
6474 /* If this was specified by the user to be a linker input, indicate that. */
6475 if (language != 0 && language[0] == '*')
6478 /* Otherwise, look for the language, if one is spec'd. */
6481 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6482 if (cp->suffix[0] == '@' && !strcmp (cp->suffix + 1, language))
6485 error ("language %s not recognized", language);
6489 /* Look for a suffix. */
6490 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6492 if (/* The suffix `-' matches only the file name `-'. */
6493 (!strcmp (cp->suffix, "-") && !strcmp (name, "-"))
6494 || (strlen (cp->suffix) < length
6495 /* See if the suffix matches the end of NAME. */
6496 && !strcmp (cp->suffix,
6497 name + length - strlen (cp->suffix))
6502 #if defined (OS2) ||defined (HAVE_DOS_BASED_FILE_SYSTEM)
6503 /* Look again, but case-insensitively this time. */
6505 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6507 if (/* The suffix `-' matches only the file name `-'. */
6508 (!strcmp (cp->suffix, "-") && !strcmp (name, "-"))
6509 || (strlen (cp->suffix) < length
6510 /* See if the suffix matches the end of NAME. */
6511 && ((!strcmp (cp->suffix,
6512 name + length - strlen (cp->suffix))
6513 || !strpbrk (cp->suffix, "ABCDEFGHIJKLMNOPQRSTUVWXYZ"))
6514 && !strcasecmp (cp->suffix,
6515 name + length - strlen (cp->suffix)))
6521 if (cp >= compilers)
6523 if (cp->spec[0] != '@')
6524 /* A non-alias entry: return it. */
6527 /* An alias entry maps a suffix to a language.
6528 Search for the language; pass 0 for NAME and LENGTH
6529 to avoid infinite recursion if language not found. */
6530 return lookup_compiler (NULL, 0, cp->spec + 1);
6536 save_string (const char *s, int len)
6538 char *result = xmalloc (len + 1);
6540 memcpy (result, s, len);
6546 pfatal_with_name (const char *name)
6548 perror_with_name (name);
6549 delete_temp_files ();
6554 perror_with_name (const char *name)
6556 error ("%s: %s", name, xstrerror (errno));
6560 pfatal_pexecute (const char *errmsg_fmt, const char *errmsg_arg)
6564 int save_errno = errno;
6566 /* Space for trailing '\0' is in %s. */
6567 char *msg = xmalloc (strlen (errmsg_fmt) + strlen (errmsg_arg));
6568 sprintf (msg, errmsg_fmt, errmsg_arg);
6574 pfatal_with_name (errmsg_fmt);
6577 /* Output an error message and exit. */
6582 fatal ("internal gcc abort");
6585 /* Output an error message and exit. */
6588 fatal (const char *msgid, ...)
6592 va_start (ap, msgid);
6594 fprintf (stderr, "%s: ", programname);
6595 vfprintf (stderr, _(msgid), ap);
6597 fprintf (stderr, "\n");
6598 delete_temp_files ();
6603 error (const char *msgid, ...)
6607 va_start (ap, msgid);
6608 fprintf (stderr, "%s: ", programname);
6609 vfprintf (stderr, _(msgid), ap);
6612 fprintf (stderr, "\n");
6616 notice (const char *msgid, ...)
6620 va_start (ap, msgid);
6621 vfprintf (stderr, _(msgid), ap);
6626 validate_switches_from_spec (const char *spec)
6628 const char *p = spec;
6631 if (c == '%' && (*p == '{' || *p == '<' || (*p == 'W' && *++p == '{')))
6632 /* We have a switch spec. */
6633 p = validate_switches (p + 1);
6637 validate_all_switches (void)
6639 struct compiler *comp;
6640 struct spec_list *spec;
6642 for (comp = compilers; comp->spec; comp++)
6643 validate_switches_from_spec (comp->spec);
6645 /* Look through the linked list of specs read from the specs file. */
6646 for (spec = specs; spec; spec = spec->next)
6647 validate_switches_from_spec (*spec->ptr_spec);
6649 validate_switches_from_spec (link_command_spec);
6652 /* Look at the switch-name that comes after START
6653 and mark as valid all supplied switches that match it. */
6656 validate_switches (const char *start)
6658 const char *p = start;
6662 bool suffix = false;
6663 bool starred = false;
6665 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
6678 while (ISIDNUM (*p) || *p == '-' || *p == '+' || *p == '='
6679 || *p == ',' || *p == '.' || *p == '@')
6684 starred = true, p++;
6690 /* Mark all matching switches as valid. */
6691 for (i = 0; i < n_switches; i++)
6692 if (!strncmp (switches[i].part1, atom, len)
6693 && (starred || switches[i].part1[len] == 0))
6694 switches[i].validated = 1;
6698 if (*p && (p[-1] == '|' || p[-1] == '&'))
6701 if (*p && p[-1] == ':')
6703 while (*p && *p != ';' && *p != '}')
6708 if (*p == '{' || *p == '<')
6709 p = validate_switches (p+1);
6710 else if (p[0] == 'W' && p[1] == '{')
6711 p = validate_switches (p+2);
6718 if (*p && p[-1] == ';')
6732 static struct mdswitchstr *mdswitches;
6733 static int n_mdswitches;
6735 /* Check whether a particular argument was used. The first time we
6736 canonicalize the switches to keep only the ones we care about. */
6739 used_arg (const char *p, int len)
6744 const char *replace;
6749 static struct mswitchstr *mswitches;
6750 static int n_mswitches;
6755 struct mswitchstr *matches;
6759 /* Break multilib_matches into the component strings of string
6760 and replacement string. */
6761 for (q = multilib_matches; *q != '\0'; q++)
6765 matches = alloca ((sizeof (struct mswitchstr)) * cnt);
6767 q = multilib_matches;
6777 matches[i].len = q - matches[i].str;
6779 matches[i].replace = ++q;
6780 while (*q != ';' && *q != '\0')
6786 matches[i].rep_len = q - matches[i].replace;
6792 /* Now build a list of the replacement string for switches that we care
6793 about. Make sure we allocate at least one entry. This prevents
6794 xmalloc from calling fatal, and prevents us from re-executing this
6797 = xmalloc (sizeof (struct mswitchstr)
6798 * (n_mdswitches + (n_switches ? n_switches : 1)));
6799 for (i = 0; i < n_switches; i++)
6801 int xlen = strlen (switches[i].part1);
6802 for (j = 0; j < cnt; j++)
6803 if (xlen == matches[j].len
6804 && ! strncmp (switches[i].part1, matches[j].str, xlen))
6806 mswitches[n_mswitches].str = matches[j].replace;
6807 mswitches[n_mswitches].len = matches[j].rep_len;
6808 mswitches[n_mswitches].replace = (char *) 0;
6809 mswitches[n_mswitches].rep_len = 0;
6815 /* Add MULTILIB_DEFAULTS switches too, as long as they were not present
6816 on the command line nor any options mutually incompatible with
6818 for (i = 0; i < n_mdswitches; i++)
6822 for (q = multilib_options; *q != '\0'; q++)
6828 while (strncmp (q, mdswitches[i].str, mdswitches[i].len) != 0
6829 || strchr (" /", q[mdswitches[i].len]) == NULL)
6831 while (*q != ' ' && *q != '/' && *q != '\0')
6838 if (*q != ' ' && *q != '\0')
6840 while (*r != ' ' && *r != '\0')
6843 while (*q != ' ' && *q != '/' && *q != '\0')
6846 if (used_arg (r, q - r))
6851 mswitches[n_mswitches].str = mdswitches[i].str;
6852 mswitches[n_mswitches].len = mdswitches[i].len;
6853 mswitches[n_mswitches].replace = (char *) 0;
6854 mswitches[n_mswitches].rep_len = 0;
6867 for (i = 0; i < n_mswitches; i++)
6868 if (len == mswitches[i].len && ! strncmp (p, mswitches[i].str, len))
6875 default_arg (const char *p, int len)
6879 for (i = 0; i < n_mdswitches; i++)
6880 if (len == mdswitches[i].len && ! strncmp (p, mdswitches[i].str, len))
6886 /* Work out the subdirectory to use based on the options. The format of
6887 multilib_select is a list of elements. Each element is a subdirectory
6888 name followed by a list of options followed by a semicolon. The format
6889 of multilib_exclusions is the same, but without the preceding
6890 directory. First gcc will check the exclusions, if none of the options
6891 beginning with an exclamation point are present, and all of the other
6892 options are present, then we will ignore this completely. Passing
6893 that, gcc will consider each multilib_select in turn using the same
6894 rules for matching the options. If a match is found, that subdirectory
6898 set_multilib_dir (void)
6901 unsigned int this_path_len;
6902 const char *this_path, *this_arg;
6903 const char *start, *end;
6905 int ok, ndfltok, first;
6908 start = multilib_defaults;
6909 while (*start == ' ' || *start == '\t')
6911 while (*start != '\0')
6914 while (*start != ' ' && *start != '\t' && *start != '\0')
6916 while (*start == ' ' || *start == '\t')
6924 mdswitches = xmalloc (sizeof (struct mdswitchstr) * n_mdswitches);
6925 for (start = multilib_defaults; *start != '\0'; start = end + 1)
6927 while (*start == ' ' || *start == '\t')
6933 for (end = start + 1;
6934 *end != ' ' && *end != '\t' && *end != '\0'; end++)
6937 obstack_grow (&multilib_obstack, start, end - start);
6938 obstack_1grow (&multilib_obstack, 0);
6939 mdswitches[i].str = obstack_finish (&multilib_obstack);
6940 mdswitches[i++].len = end - start;
6947 p = multilib_exclusions;
6950 /* Ignore newlines. */
6957 /* Check the arguments. */
6971 while (*p != ' ' && *p != ';')
6978 if (*this_arg != '!')
6986 ok = used_arg (this_arg, p - this_arg);
7001 p = multilib_select;
7004 /* Ignore newlines. */
7011 /* Get the initial path. */
7019 this_path_len = p - this_path;
7021 /* Check the arguments. */
7037 while (*p != ' ' && *p != ';')
7044 if (*this_arg != '!')
7052 /* If this is a default argument, we can just ignore it.
7053 This is true even if this_arg begins with '!'. Beginning
7054 with '!' does not mean that this argument is necessarily
7055 inappropriate for this library: it merely means that
7056 there is a more specific library which uses this
7057 argument. If this argument is a default, we need not
7058 consider that more specific library. */
7059 ok = used_arg (this_arg, p - this_arg);
7066 if (default_arg (this_arg, p - this_arg))
7075 if (this_path_len != 1
7076 || this_path[0] != '.')
7078 char *new_multilib_dir = xmalloc (this_path_len + 1);
7081 strncpy (new_multilib_dir, this_path, this_path_len);
7082 new_multilib_dir[this_path_len] = '\0';
7083 q = strchr (new_multilib_dir, ':');
7086 multilib_dir = new_multilib_dir;
7093 const char *q = this_path, *end = this_path + this_path_len;
7095 while (q < end && *q != ':')
7099 char *new_multilib_os_dir = xmalloc (end - q);
7100 memcpy (new_multilib_os_dir, q + 1, end - q - 1);
7101 new_multilib_os_dir[end - q - 1] = '\0';
7102 multilib_os_dir = new_multilib_os_dir;
7110 if (multilib_dir == NULL && multilib_os_dir != NULL
7111 && strcmp (multilib_os_dir, ".") == 0)
7113 free ((char *) multilib_os_dir);
7114 multilib_os_dir = NULL;
7116 else if (multilib_dir != NULL && multilib_os_dir == NULL)
7117 multilib_os_dir = multilib_dir;
7120 /* Print out the multiple library subdirectory selection
7121 information. This prints out a series of lines. Each line looks
7122 like SUBDIRECTORY;@OPTION@OPTION, with as many options as is
7123 required. Only the desired options are printed out, the negative
7124 matches. The options are print without a leading dash. There are
7125 no spaces to make it easy to use the information in the shell.
7126 Each subdirectory is printed only once. This assumes the ordering
7127 generated by the genmultilib script. Also, we leave out ones that match
7131 print_multilib_info (void)
7133 const char *p = multilib_select;
7134 const char *last_path = 0, *this_path;
7136 unsigned int last_path_len = 0;
7141 /* Ignore newlines. */
7148 /* Get the initial path. */
7157 /* When --disable-multilib was used but target defines
7158 MULTILIB_OSDIRNAMES, entries starting with .: are there just
7159 to find multilib_os_dir, so skip them from output. */
7160 if (this_path[0] == '.' && this_path[1] == ':')
7163 /* Check for matches with the multilib_exclusions. We don't bother
7164 with the '!' in either list. If any of the exclusion rules match
7165 all of its options with the select rule, we skip it. */
7167 const char *e = multilib_exclusions;
7168 const char *this_arg;
7173 /* Ignore newlines. */
7180 /* Check the arguments. */
7197 while (*e != ' ' && *e != ';')
7208 int len = e - this_arg;
7215 while (*q != ' ' && *q != ';')
7222 if (! strncmp (arg, this_arg, (len < q - arg) ? q - arg : len) ||
7223 default_arg (this_arg, e - this_arg))
7253 /* If this is a duplicate, skip it. */
7254 skip = (last_path != 0 && (unsigned int) (p - this_path) == last_path_len
7255 && ! strncmp (last_path, this_path, last_path_len));
7257 last_path = this_path;
7258 last_path_len = p - this_path;
7261 /* If this directory requires any default arguments, we can skip
7262 it. We will already have printed a directory identical to
7263 this one which does not require that default argument. */
7281 while (*q != ' ' && *q != ';')
7289 && default_arg (arg, q - arg))
7304 for (p1 = last_path; p1 < p && *p1 != ':'; p1++)
7323 use_arg = *p != '!';
7328 while (*p != ' ' && *p != ';')
7343 /* If there are extra options, print them now. */
7344 if (multilib_extra && *multilib_extra)
7346 int print_at = TRUE;
7349 for (q = multilib_extra; *q != '\0'; q++)
7370 /* if-exists built-in spec function.
7372 Checks to see if the file specified by the absolute pathname in
7373 ARGS exists. Returns that pathname if found.
7375 The usual use for this function is to check for a library file
7376 (whose name has been expanded with %s). */
7379 if_exists_spec_function (int argc, const char **argv)
7381 /* Must have only one argument. */
7382 if (argc == 1 && IS_ABSOLUTE_PATH (argv[0]) && ! access (argv[0], R_OK))
7388 /* if-exists-else built-in spec function.
7390 This is like if-exists, but takes an additional argument which
7391 is returned if the first argument does not exist. */
7394 if_exists_else_spec_function (int argc, const char **argv)
7396 /* Must have exactly two arguments. */
7400 if (IS_ABSOLUTE_PATH (argv[0]) && ! access (argv[0], R_OK))