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 -auxbase%{c|S:%{o*:-strip %*}%{!o*: %b}}%{!c:%{!S: %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 "%{!shared:%{!shared-libgcc:", static_name, " ",
1537 eh_name, "}%{shared-libgcc:", shared_name, " ",
1538 static_name, "}}%{shared:",
1540 "%{shared-libgcc:", shared_name,
1541 "}%{!shared-libgcc:", static_name, "}",
1547 obstack_grow (obstack, buf, strlen (buf));
1550 #endif /* ENABLE_SHARED_LIBGCC */
1552 /* Initialize the specs lookup routines. */
1557 struct spec_list *next = (struct spec_list *) 0;
1558 struct spec_list *sl = (struct spec_list *) 0;
1562 return; /* Already initialized. */
1565 notice ("Using built-in specs.\n");
1568 extra_specs = xcalloc (sizeof (struct spec_list),
1569 ARRAY_SIZE (extra_specs_1));
1571 for (i = ARRAY_SIZE (extra_specs_1) - 1; i >= 0; i--)
1573 sl = &extra_specs[i];
1574 sl->name = extra_specs_1[i].name;
1575 sl->ptr = extra_specs_1[i].ptr;
1577 sl->name_len = strlen (sl->name);
1578 sl->ptr_spec = &sl->ptr;
1583 /* Initialize here, not in definition. The IRIX 6 O32 cc sometimes chokes
1584 on ?: in file-scope variable initializations. */
1585 asm_debug = ASM_DEBUG_SPEC;
1587 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--)
1589 sl = &static_specs[i];
1594 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
1595 /* ??? If neither -shared-libgcc nor --static-libgcc was
1596 seen, then we should be making an educated guess. Some proposed
1597 heuristics for ELF include:
1599 (1) If "-Wl,--export-dynamic", then it's a fair bet that the
1600 program will be doing dynamic loading, which will likely
1601 need the shared libgcc.
1603 (2) If "-ldl", then it's also a fair bet that we're doing
1606 (3) For each ET_DYN we're linking against (either through -lfoo
1607 or /some/path/foo.so), check to see whether it or one of
1608 its dependencies depends on a shared libgcc.
1612 If the runtime is fixed to look for program headers instead
1613 of calling __register_frame_info at all, for each object,
1614 use the shared libgcc if any EH symbol referenced.
1616 If crtstuff is fixed to not invoke __register_frame_info
1617 automatically, for each object, use the shared libgcc if
1618 any non-empty unwind section found.
1620 Doing any of this probably requires invoking an external program to
1621 do the actual object file scanning. */
1623 const char *p = libgcc_spec;
1626 /* Transform the extant libgcc_spec into one that uses the shared libgcc
1627 when given the proper command line arguments. */
1630 if (in_sep && *p == '-' && strncmp (p, "-lgcc", 5) == 0)
1632 init_gcc_specs (&obstack,
1633 #ifdef NO_SHARED_LIBGCC_MULTILIB
1641 #ifdef USE_LIBUNWIND_EXCEPTIONS
1649 else if (in_sep && *p == 'l' && strncmp (p, "libgcc.a%s", 10) == 0)
1651 /* Ug. We don't know shared library extensions. Hope that
1652 systems that use this form don't do shared libraries. */
1653 init_gcc_specs (&obstack,
1654 #ifdef NO_SHARED_LIBGCC_MULTILIB
1662 #ifdef USE_LIBUNWIND_EXCEPTIONS
1671 obstack_1grow (&obstack, *p);
1672 in_sep = (*p == ' ');
1677 obstack_1grow (&obstack, '\0');
1678 libgcc_spec = obstack_finish (&obstack);
1681 #ifdef USE_AS_TRADITIONAL_FORMAT
1682 /* Prepend "--traditional-format" to whatever asm_spec we had before. */
1684 static const char tf[] = "--traditional-format ";
1685 obstack_grow (&obstack, tf, sizeof(tf) - 1);
1686 obstack_grow0 (&obstack, asm_spec, strlen (asm_spec));
1687 asm_spec = obstack_finish (&obstack);
1691 /* Prepend LINK_EH_SPEC to whatever link_spec we had before. */
1692 obstack_grow (&obstack, LINK_EH_SPEC, sizeof(LINK_EH_SPEC) - 1);
1693 obstack_grow0 (&obstack, link_spec, strlen (link_spec));
1694 link_spec = obstack_finish (&obstack);
1700 /* Change the value of spec NAME to SPEC. If SPEC is empty, then the spec is
1701 removed; If the spec starts with a + then SPEC is added to the end of the
1705 set_spec (const char *name, const char *spec)
1707 struct spec_list *sl;
1708 const char *old_spec;
1709 int name_len = strlen (name);
1712 /* If this is the first call, initialize the statically allocated specs. */
1715 struct spec_list *next = (struct spec_list *) 0;
1716 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--)
1718 sl = &static_specs[i];
1725 /* See if the spec already exists. */
1726 for (sl = specs; sl; sl = sl->next)
1727 if (name_len == sl->name_len && !strcmp (sl->name, name))
1732 /* Not found - make it. */
1733 sl = xmalloc (sizeof (struct spec_list));
1734 sl->name = xstrdup (name);
1735 sl->name_len = name_len;
1736 sl->ptr_spec = &sl->ptr;
1738 *(sl->ptr_spec) = "";
1743 old_spec = *(sl->ptr_spec);
1744 *(sl->ptr_spec) = ((spec[0] == '+' && ISSPACE ((unsigned char)spec[1]))
1745 ? concat (old_spec, spec + 1, NULL)
1750 notice ("Setting spec %s to '%s'\n\n", name, *(sl->ptr_spec));
1753 /* Free the old spec. */
1754 if (old_spec && sl->alloc_p)
1755 free ((void *) old_spec);
1760 /* Accumulate a command (program name and args), and run it. */
1762 /* Vector of pointers to arguments in the current line of specifications. */
1764 static const char **argbuf;
1766 /* Number of elements allocated in argbuf. */
1768 static int argbuf_length;
1770 /* Number of elements in argbuf currently in use (containing args). */
1772 static int argbuf_index;
1774 /* This is the list of suffixes and codes (%g/%u/%U/%j) and the associated
1775 temp file. If the HOST_BIT_BUCKET is used for %j, no entry is made for
1778 static struct temp_name {
1779 const char *suffix; /* suffix associated with the code. */
1780 int length; /* strlen (suffix). */
1781 int unique; /* Indicates whether %g or %u/%U was used. */
1782 const char *filename; /* associated filename. */
1783 int filename_length; /* strlen (filename). */
1784 struct temp_name *next;
1787 /* Number of commands executed so far. */
1789 static int execution_count;
1791 /* Number of commands that exited with a signal. */
1793 static int signal_count;
1795 /* Name with which this program was invoked. */
1797 static const char *programname;
1799 /* Allocate the argument vector. */
1805 argbuf = xmalloc (argbuf_length * sizeof (const char *));
1808 /* Clear out the vector of arguments (after a command is executed). */
1816 /* Add one argument to the vector at the end.
1817 This is done when a space is seen or at the end of the line.
1818 If DELETE_ALWAYS is nonzero, the arg is a filename
1819 and the file should be deleted eventually.
1820 If DELETE_FAILURE is nonzero, the arg is a filename
1821 and the file should be deleted if this compilation fails. */
1824 store_arg (const char *arg, int delete_always, int delete_failure)
1826 if (argbuf_index + 1 == argbuf_length)
1827 argbuf = xrealloc (argbuf, (argbuf_length *= 2) * sizeof (const char *));
1829 argbuf[argbuf_index++] = arg;
1830 argbuf[argbuf_index] = 0;
1832 if (delete_always || delete_failure)
1833 record_temp_file (arg, delete_always, delete_failure);
1836 /* Load specs from a file name named FILENAME, replacing occurrences of
1837 various different types of line-endings, \r\n, \n\r and just \r, with
1841 load_specs (const char *filename)
1845 struct stat statbuf;
1852 notice ("Reading specs from %s\n", filename);
1854 /* Open and stat the file. */
1855 desc = open (filename, O_RDONLY, 0);
1857 pfatal_with_name (filename);
1858 if (stat (filename, &statbuf) < 0)
1859 pfatal_with_name (filename);
1861 /* Read contents of file into BUFFER. */
1862 buffer = xmalloc ((unsigned) statbuf.st_size + 1);
1863 readlen = read (desc, buffer, (unsigned) statbuf.st_size);
1865 pfatal_with_name (filename);
1866 buffer[readlen] = 0;
1869 specs = xmalloc (readlen + 1);
1871 for (buffer_p = buffer; buffer_p && *buffer_p; buffer_p++)
1877 if (buffer_p > buffer && *(buffer_p - 1) == '\n') /* \n\r */
1879 else if (*(buffer_p + 1) == '\n') /* \r\n */
1893 /* Read compilation specs from a file named FILENAME,
1894 replacing the default ones.
1896 A suffix which starts with `*' is a definition for
1897 one of the machine-specific sub-specs. The "suffix" should be
1898 *asm, *cc1, *cpp, *link, *startfile, etc.
1899 The corresponding spec is stored in asm_spec, etc.,
1900 rather than in the `compilers' vector.
1902 Anything invalid in the file is a fatal error. */
1905 read_specs (const char *filename, int main_p)
1910 buffer = load_specs (filename);
1912 /* Scan BUFFER for specs, putting them in the vector. */
1918 char *in, *out, *p1, *p2, *p3;
1920 /* Advance P in BUFFER to the next nonblank nocomment line. */
1921 p = skip_whitespace (p);
1925 /* Is this a special command that starts with '%'? */
1926 /* Don't allow this for the main specs file, since it would
1927 encourage people to overwrite it. */
1928 if (*p == '%' && !main_p)
1931 while (*p && *p != '\n')
1937 if (!strncmp (p1, "%include", sizeof ("%include") - 1)
1938 && (p1[sizeof "%include" - 1] == ' '
1939 || p1[sizeof "%include" - 1] == '\t'))
1943 p1 += sizeof ("%include");
1944 while (*p1 == ' ' || *p1 == '\t')
1947 if (*p1++ != '<' || p[-2] != '>')
1948 fatal ("specs %%include syntax malformed after %ld characters",
1949 (long) (p1 - buffer + 1));
1952 new_filename = find_a_file (&startfile_prefixes, p1, R_OK, 0);
1953 read_specs (new_filename ? new_filename : p1, FALSE);
1956 else if (!strncmp (p1, "%include_noerr", sizeof "%include_noerr" - 1)
1957 && (p1[sizeof "%include_noerr" - 1] == ' '
1958 || p1[sizeof "%include_noerr" - 1] == '\t'))
1962 p1 += sizeof "%include_noerr";
1963 while (*p1 == ' ' || *p1 == '\t')
1966 if (*p1++ != '<' || p[-2] != '>')
1967 fatal ("specs %%include syntax malformed after %ld characters",
1968 (long) (p1 - buffer + 1));
1971 new_filename = find_a_file (&startfile_prefixes, p1, R_OK, 0);
1973 read_specs (new_filename, FALSE);
1974 else if (verbose_flag)
1975 notice ("could not find specs file %s\n", p1);
1978 else if (!strncmp (p1, "%rename", sizeof "%rename" - 1)
1979 && (p1[sizeof "%rename" - 1] == ' '
1980 || p1[sizeof "%rename" - 1] == '\t'))
1983 struct spec_list *sl;
1984 struct spec_list *newsl;
1986 /* Get original name. */
1987 p1 += sizeof "%rename";
1988 while (*p1 == ' ' || *p1 == '\t')
1991 if (! ISALPHA ((unsigned char) *p1))
1992 fatal ("specs %%rename syntax malformed after %ld characters",
1993 (long) (p1 - buffer));
1996 while (*p2 && !ISSPACE ((unsigned char) *p2))
1999 if (*p2 != ' ' && *p2 != '\t')
2000 fatal ("specs %%rename syntax malformed after %ld characters",
2001 (long) (p2 - buffer));
2005 while (*p2 == ' ' || *p2 == '\t')
2008 if (! ISALPHA ((unsigned char) *p2))
2009 fatal ("specs %%rename syntax malformed after %ld characters",
2010 (long) (p2 - buffer));
2012 /* Get new spec name. */
2014 while (*p3 && !ISSPACE ((unsigned char) *p3))
2018 fatal ("specs %%rename syntax malformed after %ld characters",
2019 (long) (p3 - buffer));
2022 for (sl = specs; sl; sl = sl->next)
2023 if (name_len == sl->name_len && !strcmp (sl->name, p1))
2027 fatal ("specs %s spec was not found to be renamed", p1);
2029 if (strcmp (p1, p2) == 0)
2032 for (newsl = specs; newsl; newsl = newsl->next)
2033 if (strcmp (newsl->name, p2) == 0)
2034 fatal ("%s: attempt to rename spec '%s' to already defined spec '%s'",
2039 notice ("rename spec %s to %s\n", p1, p2);
2041 notice ("spec is '%s'\n\n", *(sl->ptr_spec));
2045 set_spec (p2, *(sl->ptr_spec));
2047 free ((void *) *(sl->ptr_spec));
2049 *(sl->ptr_spec) = "";
2054 fatal ("specs unknown %% command after %ld characters",
2055 (long) (p1 - buffer));
2058 /* Find the colon that should end the suffix. */
2060 while (*p1 && *p1 != ':' && *p1 != '\n')
2063 /* The colon shouldn't be missing. */
2065 fatal ("specs file malformed after %ld characters",
2066 (long) (p1 - buffer));
2068 /* Skip back over trailing whitespace. */
2070 while (p2 > buffer && (p2[-1] == ' ' || p2[-1] == '\t'))
2073 /* Copy the suffix to a string. */
2074 suffix = save_string (p, p2 - p);
2075 /* Find the next line. */
2076 p = skip_whitespace (p1 + 1);
2078 fatal ("specs file malformed after %ld characters",
2079 (long) (p - buffer));
2082 /* Find next blank line or end of string. */
2083 while (*p1 && !(*p1 == '\n' && (p1[1] == '\n' || p1[1] == '\0')))
2086 /* Specs end at the blank line and do not include the newline. */
2087 spec = save_string (p, p1 - p);
2090 /* Delete backslash-newline sequences from the spec. */
2095 if (in[0] == '\\' && in[1] == '\n')
2097 else if (in[0] == '#')
2098 while (*in && *in != '\n')
2106 if (suffix[0] == '*')
2108 if (! strcmp (suffix, "*link_command"))
2109 link_command_spec = spec;
2111 set_spec (suffix + 1, spec);
2115 /* Add this pair to the vector. */
2117 = xrealloc (compilers,
2118 (n_compilers + 2) * sizeof (struct compiler));
2120 compilers[n_compilers].suffix = suffix;
2121 compilers[n_compilers].spec = spec;
2123 memset (&compilers[n_compilers], 0, sizeof compilers[n_compilers]);
2127 link_command_spec = spec;
2130 if (link_command_spec == 0)
2131 fatal ("spec file has no spec for linking");
2134 /* Record the names of temporary files we tell compilers to write,
2135 and delete them at the end of the run. */
2137 /* This is the common prefix we use to make temp file names.
2138 It is chosen once for each run of this program.
2139 It is substituted into a spec by %g or %j.
2140 Thus, all temp file names contain this prefix.
2141 In practice, all temp file names start with this prefix.
2143 This prefix comes from the envvar TMPDIR if it is defined;
2144 otherwise, from the P_tmpdir macro if that is defined;
2145 otherwise, in /usr/tmp or /tmp;
2146 or finally the current directory if all else fails. */
2148 static const char *temp_filename;
2150 /* Length of the prefix. */
2152 static int temp_filename_length;
2154 /* Define the list of temporary files to delete. */
2159 struct temp_file *next;
2162 /* Queue of files to delete on success or failure of compilation. */
2163 static struct temp_file *always_delete_queue;
2164 /* Queue of files to delete on failure of compilation. */
2165 static struct temp_file *failure_delete_queue;
2167 /* Record FILENAME as a file to be deleted automatically.
2168 ALWAYS_DELETE nonzero means delete it if all compilation succeeds;
2169 otherwise delete it in any case.
2170 FAIL_DELETE nonzero means delete it if a compilation step fails;
2171 otherwise delete it in any case. */
2174 record_temp_file (const char *filename, int always_delete, int fail_delete)
2176 char *const name = xstrdup (filename);
2180 struct temp_file *temp;
2181 for (temp = always_delete_queue; temp; temp = temp->next)
2182 if (! strcmp (name, temp->name))
2185 temp = xmalloc (sizeof (struct temp_file));
2186 temp->next = always_delete_queue;
2188 always_delete_queue = temp;
2195 struct temp_file *temp;
2196 for (temp = failure_delete_queue; temp; temp = temp->next)
2197 if (! strcmp (name, temp->name))
2200 temp = xmalloc (sizeof (struct temp_file));
2201 temp->next = failure_delete_queue;
2203 failure_delete_queue = temp;
2209 /* Delete all the temporary files whose names we previously recorded. */
2212 delete_if_ordinary (const char *name)
2218 printf ("Delete %s? (y or n) ", name);
2222 while ((c = getchar ()) != '\n' && c != EOF)
2225 if (i == 'y' || i == 'Y')
2227 if (stat (name, &st) >= 0 && S_ISREG (st.st_mode))
2228 if (unlink (name) < 0)
2230 perror_with_name (name);
2234 delete_temp_files (void)
2236 struct temp_file *temp;
2238 for (temp = always_delete_queue; temp; temp = temp->next)
2239 delete_if_ordinary (temp->name);
2240 always_delete_queue = 0;
2243 /* Delete all the files to be deleted on error. */
2246 delete_failure_queue (void)
2248 struct temp_file *temp;
2250 for (temp = failure_delete_queue; temp; temp = temp->next)
2251 delete_if_ordinary (temp->name);
2255 clear_failure_queue (void)
2257 failure_delete_queue = 0;
2260 /* Build a list of search directories from PATHS.
2261 PREFIX is a string to prepend to the list.
2262 If CHECK_DIR_P is nonzero we ensure the directory exists.
2263 This is used mostly by putenv_from_prefixes so we use `collect_obstack'.
2264 It is also used by the --print-search-dirs flag. */
2267 build_search_list (struct path_prefix *paths, const char *prefix,
2270 int suffix_len = (machine_suffix) ? strlen (machine_suffix) : 0;
2272 = (just_machine_suffix) ? strlen (just_machine_suffix) : 0;
2273 int first_time = TRUE;
2274 struct prefix_list *pprefix;
2276 obstack_grow (&collect_obstack, prefix, strlen (prefix));
2277 obstack_1grow (&collect_obstack, '=');
2279 for (pprefix = paths->plist; pprefix != 0; pprefix = pprefix->next)
2281 int len = strlen (pprefix->prefix);
2285 || is_directory (pprefix->prefix, machine_suffix, 0)))
2288 obstack_1grow (&collect_obstack, PATH_SEPARATOR);
2291 obstack_grow (&collect_obstack, pprefix->prefix, len);
2292 obstack_grow (&collect_obstack, machine_suffix, suffix_len);
2295 if (just_machine_suffix
2296 && pprefix->require_machine_suffix == 2
2298 || is_directory (pprefix->prefix, just_machine_suffix, 0)))
2301 obstack_1grow (&collect_obstack, PATH_SEPARATOR);
2304 obstack_grow (&collect_obstack, pprefix->prefix, len);
2305 obstack_grow (&collect_obstack, just_machine_suffix,
2309 if (! pprefix->require_machine_suffix)
2312 obstack_1grow (&collect_obstack, PATH_SEPARATOR);
2315 obstack_grow (&collect_obstack, pprefix->prefix, len);
2319 obstack_1grow (&collect_obstack, '\0');
2320 return obstack_finish (&collect_obstack);
2323 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
2327 putenv_from_prefixes (struct path_prefix *paths, const char *env_var)
2329 putenv (build_search_list (paths, env_var, 1));
2332 /* Check whether NAME can be accessed in MODE. This is like access,
2333 except that it never considers directories to be executable. */
2336 access_check (const char *name, int mode)
2342 if (stat (name, &st) < 0
2343 || S_ISDIR (st.st_mode))
2347 return access (name, mode);
2350 /* Search for NAME using the prefix list PREFIXES. MODE is passed to
2351 access to check permissions.
2352 Return 0 if not found, otherwise return its name, allocated with malloc. */
2355 find_a_file (struct path_prefix *pprefix, const char *name, int mode,
2359 const char *const file_suffix =
2360 ((mode & X_OK) != 0 ? HOST_EXECUTABLE_SUFFIX : "");
2361 struct prefix_list *pl;
2362 int len = pprefix->max_len + strlen (name) + strlen (file_suffix) + 1;
2363 const char *multilib_name, *multilib_os_name;
2365 #ifdef DEFAULT_ASSEMBLER
2366 if (! strcmp (name, "as") && access (DEFAULT_ASSEMBLER, mode) == 0)
2367 return xstrdup (DEFAULT_ASSEMBLER);
2370 #ifdef DEFAULT_LINKER
2371 if (! strcmp(name, "ld") && access (DEFAULT_LINKER, mode) == 0)
2372 return xstrdup (DEFAULT_LINKER);
2376 len += strlen (machine_suffix);
2378 multilib_name = name;
2379 multilib_os_name = name;
2380 if (multilib && multilib_os_dir)
2382 int len1 = multilib_dir ? strlen (multilib_dir) + 1 : 0;
2383 int len2 = strlen (multilib_os_dir) + 1;
2385 len += len1 > len2 ? len1 : len2;
2387 multilib_name = ACONCAT ((multilib_dir, dir_separator_str, name,
2389 if (strcmp (multilib_os_dir, ".") != 0)
2390 multilib_os_name = ACONCAT ((multilib_os_dir, dir_separator_str, name,
2394 temp = xmalloc (len);
2396 /* Determine the filename to execute (special case for absolute paths). */
2398 if (IS_ABSOLUTE_PATH (name))
2400 if (access (name, mode) == 0)
2402 strcpy (temp, name);
2407 for (pl = pprefix->plist; pl; pl = pl->next)
2409 const char *this_name
2410 = pl->os_multilib ? multilib_os_name : multilib_name;
2414 /* Some systems have a suffix for executable files.
2415 So try appending that first. */
2416 if (file_suffix[0] != 0)
2418 strcpy (temp, pl->prefix);
2419 strcat (temp, machine_suffix);
2420 strcat (temp, multilib_name);
2421 strcat (temp, file_suffix);
2422 if (access_check (temp, mode) == 0)
2424 if (pl->used_flag_ptr != 0)
2425 *pl->used_flag_ptr = 1;
2430 /* Now try just the multilib_name. */
2431 strcpy (temp, pl->prefix);
2432 strcat (temp, machine_suffix);
2433 strcat (temp, multilib_name);
2434 if (access_check (temp, mode) == 0)
2436 if (pl->used_flag_ptr != 0)
2437 *pl->used_flag_ptr = 1;
2442 /* Certain prefixes are tried with just the machine type,
2443 not the version. This is used for finding as, ld, etc. */
2444 if (just_machine_suffix && pl->require_machine_suffix == 2)
2446 /* Some systems have a suffix for executable files.
2447 So try appending that first. */
2448 if (file_suffix[0] != 0)
2450 strcpy (temp, pl->prefix);
2451 strcat (temp, just_machine_suffix);
2452 strcat (temp, multilib_name);
2453 strcat (temp, file_suffix);
2454 if (access_check (temp, mode) == 0)
2456 if (pl->used_flag_ptr != 0)
2457 *pl->used_flag_ptr = 1;
2462 strcpy (temp, pl->prefix);
2463 strcat (temp, just_machine_suffix);
2464 strcat (temp, multilib_name);
2465 if (access_check (temp, mode) == 0)
2467 if (pl->used_flag_ptr != 0)
2468 *pl->used_flag_ptr = 1;
2473 /* Certain prefixes can't be used without the machine suffix
2474 when the machine or version is explicitly specified. */
2475 if (! pl->require_machine_suffix)
2477 /* Some systems have a suffix for executable files.
2478 So try appending that first. */
2479 if (file_suffix[0] != 0)
2481 strcpy (temp, pl->prefix);
2482 strcat (temp, this_name);
2483 strcat (temp, file_suffix);
2484 if (access_check (temp, mode) == 0)
2486 if (pl->used_flag_ptr != 0)
2487 *pl->used_flag_ptr = 1;
2492 strcpy (temp, pl->prefix);
2493 strcat (temp, this_name);
2494 if (access_check (temp, mode) == 0)
2496 if (pl->used_flag_ptr != 0)
2497 *pl->used_flag_ptr = 1;
2507 /* Ranking of prefixes in the sort list. -B prefixes are put before
2510 enum path_prefix_priority
2512 PREFIX_PRIORITY_B_OPT,
2513 PREFIX_PRIORITY_LAST
2516 /* Add an entry for PREFIX in PLIST. The PLIST is kept in ascending
2517 order according to PRIORITY. Within each PRIORITY, new entries are
2520 If WARN is nonzero, we will warn if no file is found
2521 through this prefix. WARN should point to an int
2522 which will be set to 1 if this entry is used.
2524 COMPONENT is the value to be passed to update_path.
2526 REQUIRE_MACHINE_SUFFIX is 1 if this prefix can't be used without
2527 the complete value of machine_suffix.
2528 2 means try both machine_suffix and just_machine_suffix. */
2531 add_prefix (struct path_prefix *pprefix, const char *prefix,
2532 const char *component, /* enum prefix_priority */ int priority,
2533 int require_machine_suffix, int *warn, int os_multilib)
2535 struct prefix_list *pl, **prev;
2538 for (prev = &pprefix->plist;
2539 (*prev) != NULL && (*prev)->priority <= priority;
2540 prev = &(*prev)->next)
2543 /* Keep track of the longest prefix. */
2545 prefix = update_path (prefix, component);
2546 len = strlen (prefix);
2547 if (len > pprefix->max_len)
2548 pprefix->max_len = len;
2550 pl = xmalloc (sizeof (struct prefix_list));
2551 pl->prefix = prefix;
2552 pl->require_machine_suffix = require_machine_suffix;
2553 pl->used_flag_ptr = warn;
2554 pl->priority = priority;
2555 pl->os_multilib = os_multilib;
2559 /* Insert after PREV. */
2564 /* Same as add_prefix, but prepending target_system_root to prefix. */
2566 add_sysrooted_prefix (struct path_prefix *pprefix, const char *prefix,
2567 const char *component,
2568 /* enum prefix_priority */ int priority,
2569 int require_machine_suffix, int *warn, int os_multilib)
2571 if (!IS_ABSOLUTE_PATH (prefix))
2574 if (target_system_root)
2576 if (target_sysroot_suffix)
2577 prefix = concat (target_sysroot_suffix, prefix, NULL);
2578 prefix = concat (target_system_root, prefix, NULL);
2580 /* We have to override this because GCC's notion of sysroot
2581 moves along with GCC. */
2585 add_prefix (pprefix, prefix, component, priority,
2586 require_machine_suffix, warn, os_multilib);
2589 /* Execute the command specified by the arguments on the current line of spec.
2590 When using pipes, this includes several piped-together commands
2591 with `|' between them.
2593 Return 0 if successful, -1 if failed. */
2599 int n_commands; /* # of command. */
2603 const char *prog; /* program name. */
2604 const char **argv; /* vector of args. */
2605 int pid; /* pid of process for this command. */
2608 struct command *commands; /* each command buffer with above info. */
2610 if (processing_spec_function)
2613 /* Count # of piped commands. */
2614 for (n_commands = 1, i = 0; i < argbuf_index; i++)
2615 if (strcmp (argbuf[i], "|") == 0)
2618 /* Get storage for each command. */
2619 commands = alloca (n_commands * sizeof (struct command));
2621 /* Split argbuf into its separate piped processes,
2622 and record info about each one.
2623 Also search for the programs that are to be run. */
2625 commands[0].prog = argbuf[0]; /* first command. */
2626 commands[0].argv = &argbuf[0];
2627 string = find_a_file (&exec_prefixes, commands[0].prog, X_OK, 0);
2630 commands[0].argv[0] = string;
2632 for (n_commands = 1, i = 0; i < argbuf_index; i++)
2633 if (strcmp (argbuf[i], "|") == 0)
2634 { /* each command. */
2635 #if defined (__MSDOS__) || defined (OS2) || defined (VMS)
2636 fatal ("-pipe not supported");
2638 argbuf[i] = 0; /* termination of command args. */
2639 commands[n_commands].prog = argbuf[i + 1];
2640 commands[n_commands].argv = &argbuf[i + 1];
2641 string = find_a_file (&exec_prefixes, commands[n_commands].prog,
2644 commands[n_commands].argv[0] = string;
2648 argbuf[argbuf_index] = 0;
2650 /* If -v, print what we are about to do, and maybe query. */
2654 /* For help listings, put a blank line between sub-processes. */
2655 if (print_help_list)
2656 fputc ('\n', stderr);
2658 /* Print each piped command as a separate line. */
2659 for (i = 0; i < n_commands; i++)
2661 const char *const *j;
2663 if (verbose_only_flag)
2665 for (j = commands[i].argv; *j; j++)
2668 fprintf (stderr, " \"");
2669 for (p = *j; *p; ++p)
2671 if (*p == '"' || *p == '\\' || *p == '$')
2672 fputc ('\\', stderr);
2675 fputc ('"', stderr);
2679 for (j = commands[i].argv; *j; j++)
2680 fprintf (stderr, " %s", *j);
2682 /* Print a pipe symbol after all but the last command. */
2683 if (i + 1 != n_commands)
2684 fprintf (stderr, " |");
2685 fprintf (stderr, "\n");
2688 if (verbose_only_flag != 0)
2690 /* verbose_only_flag should act as if the spec was
2691 executed, so increment execution_count before
2692 returning. This prevents spurious warnings about
2693 unused linker input files, etc. */
2698 notice ("\nGo ahead? (y or n) ");
2702 while (getchar () != '\n')
2705 if (i != 'y' && i != 'Y')
2710 #ifdef ENABLE_VALGRIND_CHECKING
2711 /* Run the each command through valgrind. To simplify prepending the
2712 path to valgrind and the option "-q" (for quiet operation unless
2713 something triggers), we allocate a separate argv array. */
2715 for (i = 0; i < n_commands; i++)
2721 for (argc = 0; commands[i].argv[argc] != NULL; argc++)
2724 argv = alloca ((argc + 3) * sizeof (char *));
2726 argv[0] = VALGRIND_PATH;
2728 for (j = 2; j < argc + 2; j++)
2729 argv[j] = commands[i].argv[j - 2];
2732 commands[i].argv = argv;
2733 commands[i].prog = argv[0];
2737 /* Run each piped subprocess. */
2739 for (i = 0; i < n_commands; i++)
2741 char *errmsg_fmt, *errmsg_arg;
2742 const char *string = commands[i].argv[0];
2744 /* For some bizarre reason, the second argument of execvp() is
2745 char *const *, not const char *const *. */
2746 commands[i].pid = pexecute (string, (char *const *) commands[i].argv,
2747 programname, temp_filename,
2748 &errmsg_fmt, &errmsg_arg,
2749 ((i == 0 ? PEXECUTE_FIRST : 0)
2750 | (i + 1 == n_commands ? PEXECUTE_LAST : 0)
2751 | (string == commands[i].prog
2752 ? PEXECUTE_SEARCH : 0)
2753 | (verbose_flag ? PEXECUTE_VERBOSE : 0)));
2755 if (commands[i].pid == -1)
2756 pfatal_pexecute (errmsg_fmt, errmsg_arg);
2758 if (string != commands[i].prog)
2759 free ((void *) string);
2764 /* Wait for all the subprocesses to finish.
2765 We don't care what order they finish in;
2766 we know that N_COMMANDS waits will get them all.
2767 Ignore subprocesses that we don't know about,
2768 since they can be spawned by the process that exec'ed us. */
2772 #ifdef HAVE_GETRUSAGE
2774 double ut = 0.0, st = 0.0;
2777 for (i = 0; i < n_commands;)
2783 pid = pwait (commands[i].pid, &status, 0);
2787 #ifdef HAVE_GETRUSAGE
2790 /* getrusage returns the total resource usage of all children
2791 up to now. Copy the previous values into prus, get the
2792 current statistics, then take the difference. */
2795 getrusage (RUSAGE_CHILDREN, &rus);
2796 d.tv_sec = rus.ru_utime.tv_sec - prus.ru_utime.tv_sec;
2797 d.tv_usec = rus.ru_utime.tv_usec - prus.ru_utime.tv_usec;
2798 ut = (double) d.tv_sec + (double) d.tv_usec / 1.0e6;
2800 d.tv_sec = rus.ru_stime.tv_sec - prus.ru_stime.tv_sec;
2801 d.tv_usec = rus.ru_stime.tv_usec - prus.ru_stime.tv_usec;
2802 st = (double) d.tv_sec + (double) d.tv_usec / 1.0e6;
2806 for (j = 0; j < n_commands; j++)
2807 if (commands[j].pid == pid)
2810 if (WIFSIGNALED (status))
2813 /* SIGPIPE is a special case. It happens in -pipe mode
2814 when the compiler dies before the preprocessor is
2815 done, or the assembler dies before the compiler is
2816 done. There's generally been an error already, and
2817 this is just fallout. So don't generate another error
2818 unless we would otherwise have succeeded. */
2819 if (WTERMSIG (status) == SIGPIPE
2820 && (signal_count || greatest_status >= MIN_FATAL_STATUS))
2825 Internal error: %s (program %s)\n\
2826 Please submit a full bug report.\n\
2827 See %s for instructions.",
2828 strsignal (WTERMSIG (status)), commands[j].prog,
2833 else if (WIFEXITED (status)
2834 && WEXITSTATUS (status) >= MIN_FATAL_STATUS)
2836 if (WEXITSTATUS (status) > greatest_status)
2837 greatest_status = WEXITSTATUS (status);
2840 #ifdef HAVE_GETRUSAGE
2841 if (report_times && ut + st != 0)
2842 notice ("# %s %.2f %.2f\n", commands[j].prog, ut, st);
2851 /* Find all the switches given to us
2852 and make a vector describing them.
2853 The elements of the vector are strings, one per switch given.
2854 If a switch uses following arguments, then the `part1' field
2855 is the switch itself and the `args' field
2856 is a null-terminated vector containing the following arguments.
2857 The `live_cond' field is:
2859 1 if the switch is true in a conditional spec,
2860 -1 if false (overridden by a later switch)
2861 -2 if this switch should be ignored (used in %<S)
2862 The `validated' field is nonzero if any spec has looked at this switch;
2863 if it remains zero at the end of the run, it must be meaningless. */
2866 #define SWITCH_FALSE -1
2867 #define SWITCH_IGNORE -2
2868 #define SWITCH_LIVE 1
2875 unsigned char validated;
2876 unsigned char ordering;
2879 static struct switchstr *switches;
2881 static int n_switches;
2886 const char *language;
2889 /* Also a vector of input files specified. */
2891 static struct infile *infiles;
2895 /* True if multiple input files are being compiled to a single
2898 static bool combine_inputs;
2900 /* This counts the number of libraries added by lang_specific_driver, so that
2901 we can tell if there were any user supplied any files or libraries. */
2903 static int added_libraries;
2905 /* And a vector of corresponding output files is made up later. */
2907 const char **outfiles;
2909 /* Used to track if none of the -B paths are used. */
2912 /* Gives value to pass as "warn" to add_prefix for standard prefixes. */
2913 static int *warn_std_ptr = 0;
2915 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2917 /* Convert NAME to a new name if it is the standard suffix. DO_EXE
2918 is true if we should look for an executable suffix. DO_OBJ
2919 is true if we should look for an object suffix. */
2922 convert_filename (const char *name, int do_exe ATTRIBUTE_UNUSED,
2923 int do_obj ATTRIBUTE_UNUSED)
2925 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2933 len = strlen (name);
2935 #ifdef HAVE_TARGET_OBJECT_SUFFIX
2936 /* Convert x.o to x.obj if TARGET_OBJECT_SUFFIX is ".obj". */
2937 if (do_obj && len > 2
2938 && name[len - 2] == '.'
2939 && name[len - 1] == 'o')
2941 obstack_grow (&obstack, name, len - 2);
2942 obstack_grow0 (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX));
2943 name = obstack_finish (&obstack);
2947 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2948 /* If there is no filetype, make it the executable suffix (which includes
2949 the "."). But don't get confused if we have just "-o". */
2950 if (! do_exe || TARGET_EXECUTABLE_SUFFIX[0] == 0 || (len == 2 && name[0] == '-'))
2953 for (i = len - 1; i >= 0; i--)
2954 if (IS_DIR_SEPARATOR (name[i]))
2957 for (i++; i < len; i++)
2961 obstack_grow (&obstack, name, len);
2962 obstack_grow0 (&obstack, TARGET_EXECUTABLE_SUFFIX,
2963 strlen (TARGET_EXECUTABLE_SUFFIX));
2964 name = obstack_finish (&obstack);
2971 /* Display the command line switches accepted by gcc. */
2975 printf (_("Usage: %s [options] file...\n"), programname);
2976 fputs (_("Options:\n"), stdout);
2978 fputs (_(" -pass-exit-codes Exit with highest error code from a phase\n"), stdout);
2979 fputs (_(" --help Display this information\n"), stdout);
2980 fputs (_(" --target-help Display target specific command line options\n"), stdout);
2982 fputs (_(" (Use '-v --help' to display command line options of sub-processes)\n"), stdout);
2983 fputs (_(" -dumpspecs Display all of the built in spec strings\n"), stdout);
2984 fputs (_(" -dumpversion Display the version of the compiler\n"), stdout);
2985 fputs (_(" -dumpmachine Display the compiler's target processor\n"), stdout);
2986 fputs (_(" -print-search-dirs Display the directories in the compiler's search path\n"), stdout);
2987 fputs (_(" -print-libgcc-file-name Display the name of the compiler's companion library\n"), stdout);
2988 fputs (_(" -print-file-name=<lib> Display the full path to library <lib>\n"), stdout);
2989 fputs (_(" -print-prog-name=<prog> Display the full path to compiler component <prog>\n"), stdout);
2990 fputs (_(" -print-multi-directory Display the root directory for versions of libgcc\n"), stdout);
2992 -print-multi-lib Display the mapping between command line options and\n\
2993 multiple library search directories\n"), stdout);
2994 fputs (_(" -print-multi-os-directory Display the relative path to OS libraries\n"), stdout);
2995 fputs (_(" -Wa,<options> Pass comma-separated <options> on to the assembler\n"), stdout);
2996 fputs (_(" -Wp,<options> Pass comma-separated <options> on to the preprocessor\n"), stdout);
2997 fputs (_(" -Wl,<options> Pass comma-separated <options> on to the linker\n"), stdout);
2998 fputs (_(" -Xassembler <arg> Pass <arg> on to the assembler\n"), stdout);
2999 fputs (_(" -Xpreprocessor <arg> Pass <arg> on to the preprocessor\n"), stdout);
3000 fputs (_(" -Xlinker <arg> Pass <arg> on to the linker\n"), stdout);
3001 fputs (_(" -save-temps Do not delete intermediate files\n"), stdout);
3002 fputs (_(" -pipe Use pipes rather than intermediate files\n"), stdout);
3003 fputs (_(" -time Time the execution of each subprocess\n"), stdout);
3004 fputs (_(" -specs=<file> Override built-in specs with the contents of <file>\n"), stdout);
3005 fputs (_(" -std=<standard> Assume that the input sources are for <standard>\n"), stdout);
3006 fputs (_(" -B <directory> Add <directory> to the compiler's search paths\n"), stdout);
3007 fputs (_(" -b <machine> Run gcc for target <machine>, if installed\n"), stdout);
3008 fputs (_(" -V <version> Run gcc version number <version>, if installed\n"), stdout);
3009 fputs (_(" -v Display the programs invoked by the compiler\n"), stdout);
3010 fputs (_(" -### Like -v but options quoted and commands not executed\n"), stdout);
3011 fputs (_(" -E Preprocess only; do not compile, assemble or link\n"), stdout);
3012 fputs (_(" -S Compile only; do not assemble or link\n"), stdout);
3013 fputs (_(" -c Compile and assemble, but do not link\n"), stdout);
3014 fputs (_(" -o <file> Place the output into <file>\n"), stdout);
3016 -x <language> Specify the language of the following input files\n\
3017 Permissible languages include: c c++ assembler none\n\
3018 'none' means revert to the default behavior of\n\
3019 guessing the language based on the file's extension\n\
3023 \nOptions starting with -g, -f, -m, -O, -W, or --param are automatically\n\
3024 passed on to the various sub-processes invoked by %s. In order to pass\n\
3025 other options on to these processes the -W<letter> options must be used.\n\
3028 /* The rest of the options are displayed by invocations of the various
3033 add_preprocessor_option (const char *option, int len)
3035 n_preprocessor_options++;
3037 if (! preprocessor_options)
3038 preprocessor_options = xmalloc (n_preprocessor_options * sizeof (char *));
3040 preprocessor_options = xrealloc (preprocessor_options,
3041 n_preprocessor_options * sizeof (char *));
3043 preprocessor_options [n_preprocessor_options - 1] =
3044 save_string (option, len);
3048 add_assembler_option (const char *option, int len)
3050 n_assembler_options++;
3052 if (! assembler_options)
3053 assembler_options = xmalloc (n_assembler_options * sizeof (char *));
3055 assembler_options = xrealloc (assembler_options,
3056 n_assembler_options * sizeof (char *));
3058 assembler_options [n_assembler_options - 1] = save_string (option, len);
3062 add_linker_option (const char *option, int len)
3066 if (! linker_options)
3067 linker_options = xmalloc (n_linker_options * sizeof (char *));
3069 linker_options = xrealloc (linker_options,
3070 n_linker_options * sizeof (char *));
3072 linker_options [n_linker_options - 1] = save_string (option, len);
3075 /* Create the vector `switches' and its contents.
3076 Store its length in `n_switches'. */
3079 process_command (int argc, const char **argv)
3084 const char *spec_lang = 0;
3085 int last_language_n_infiles;
3088 int lang_n_infiles = 0;
3089 #ifdef MODIFY_TARGET_NAME
3090 int is_modify_target_name;
3094 GET_ENVIRONMENT (gcc_exec_prefix, "GCC_EXEC_PREFIX");
3098 added_libraries = 0;
3100 /* Figure compiler version from version string. */
3102 compiler_version = temp1 = xstrdup (version_string);
3104 for (; *temp1; ++temp1)
3113 /* If there is a -V or -b option (or both), process it now, before
3114 trying to interpret the rest of the command line. */
3115 if (argc > 1 && argv[1][0] == '-'
3116 && (argv[1][1] == 'V' || argv[1][1] == 'b'))
3118 const char *new_version = DEFAULT_TARGET_VERSION;
3119 const char *new_machine = DEFAULT_TARGET_MACHINE;
3120 const char *progname = argv[0];
3125 while (argc > 1 && argv[1][0] == '-'
3126 && (argv[1][1] == 'V' || argv[1][1] == 'b'))
3128 char opt = argv[1][1];
3130 if (argv[1][2] != '\0')
3143 fatal ("`-%c' option must have argument", opt);
3150 for (baselen = strlen (progname); baselen > 0; baselen--)
3151 if (IS_DIR_SEPARATOR (progname[baselen-1]))
3153 new_argv0 = xmemdup (progname, baselen,
3154 baselen + concat_length (new_version, new_machine,
3155 "-gcc-", NULL) + 1);
3156 strcpy (new_argv0 + baselen, new_machine);
3157 strcat (new_argv0, "-gcc-");
3158 strcat (new_argv0, new_version);
3160 new_argv = xmemdup (argv, (argc + 1) * sizeof (argv[0]),
3161 (argc + 1) * sizeof (argv[0]));
3162 new_argv[0] = new_argv0;
3164 execvp (new_argv0, new_argv);
3165 fatal ("couldn't run `%s': %s", new_argv0, xstrerror (errno));
3168 /* Set up the default search paths. If there is no GCC_EXEC_PREFIX,
3169 see if we can create it from the pathname specified in argv[0]. */
3171 gcc_libexec_prefix = standard_libexec_prefix;
3173 /* FIXME: make_relative_prefix doesn't yet work for VMS. */
3174 if (!gcc_exec_prefix)
3176 gcc_exec_prefix = make_relative_prefix (argv[0], standard_bindir_prefix,
3177 standard_exec_prefix);
3178 gcc_libexec_prefix = make_relative_prefix (argv[0],
3179 standard_bindir_prefix,
3180 standard_libexec_prefix);
3181 if (gcc_exec_prefix)
3182 putenv (concat ("GCC_EXEC_PREFIX=", gcc_exec_prefix, NULL));
3185 gcc_libexec_prefix = make_relative_prefix (gcc_exec_prefix,
3186 standard_exec_prefix,
3187 standard_libexec_prefix);
3191 if (gcc_exec_prefix)
3193 int len = strlen (gcc_exec_prefix);
3195 if (len > (int) sizeof ("/lib/gcc/") - 1
3196 && (IS_DIR_SEPARATOR (gcc_exec_prefix[len-1])))
3198 temp = gcc_exec_prefix + len - sizeof ("/lib/gcc/") + 1;
3199 if (IS_DIR_SEPARATOR (*temp)
3200 && strncmp (temp + 1, "lib", 3) == 0
3201 && IS_DIR_SEPARATOR (temp[4])
3202 && strncmp (temp + 5, "gcc", 3) == 0)
3203 len -= sizeof ("/lib/gcc/") - 1;
3206 set_std_prefix (gcc_exec_prefix, len);
3207 add_prefix (&exec_prefixes, gcc_libexec_prefix, "GCC",
3208 PREFIX_PRIORITY_LAST, 0, NULL, 0);
3209 add_prefix (&startfile_prefixes, gcc_exec_prefix, "GCC",
3210 PREFIX_PRIORITY_LAST, 0, NULL, 0);
3213 /* COMPILER_PATH and LIBRARY_PATH have values
3214 that are lists of directory names with colons. */
3216 GET_ENVIRONMENT (temp, "COMPILER_PATH");
3219 const char *startp, *endp;
3220 char *nstore = alloca (strlen (temp) + 3);
3222 startp = endp = temp;
3225 if (*endp == PATH_SEPARATOR || *endp == 0)
3227 strncpy (nstore, startp, endp - startp);
3229 strcpy (nstore, concat (".", dir_separator_str, NULL));
3230 else if (!IS_DIR_SEPARATOR (endp[-1]))
3232 nstore[endp - startp] = DIR_SEPARATOR;
3233 nstore[endp - startp + 1] = 0;
3236 nstore[endp - startp] = 0;
3237 add_prefix (&exec_prefixes, nstore, 0,
3238 PREFIX_PRIORITY_LAST, 0, NULL, 0);
3239 add_prefix (&include_prefixes,
3240 concat (nstore, "include", NULL),
3241 0, PREFIX_PRIORITY_LAST, 0, NULL, 0);
3244 endp = startp = endp + 1;
3251 GET_ENVIRONMENT (temp, LIBRARY_PATH_ENV);
3252 if (temp && *cross_compile == '0')
3254 const char *startp, *endp;
3255 char *nstore = alloca (strlen (temp) + 3);
3257 startp = endp = temp;
3260 if (*endp == PATH_SEPARATOR || *endp == 0)
3262 strncpy (nstore, startp, endp - startp);
3264 strcpy (nstore, concat (".", dir_separator_str, NULL));
3265 else if (!IS_DIR_SEPARATOR (endp[-1]))
3267 nstore[endp - startp] = DIR_SEPARATOR;
3268 nstore[endp - startp + 1] = 0;
3271 nstore[endp - startp] = 0;
3272 add_prefix (&startfile_prefixes, nstore, NULL,
3273 PREFIX_PRIORITY_LAST, 0, NULL, 1);
3276 endp = startp = endp + 1;
3283 /* Use LPATH like LIBRARY_PATH (for the CMU build program). */
3284 GET_ENVIRONMENT (temp, "LPATH");
3285 if (temp && *cross_compile == '0')
3287 const char *startp, *endp;
3288 char *nstore = alloca (strlen (temp) + 3);
3290 startp = endp = temp;
3293 if (*endp == PATH_SEPARATOR || *endp == 0)
3295 strncpy (nstore, startp, endp - startp);
3297 strcpy (nstore, concat (".", dir_separator_str, NULL));
3298 else if (!IS_DIR_SEPARATOR (endp[-1]))
3300 nstore[endp - startp] = DIR_SEPARATOR;
3301 nstore[endp - startp + 1] = 0;
3304 nstore[endp - startp] = 0;
3305 add_prefix (&startfile_prefixes, nstore, NULL,
3306 PREFIX_PRIORITY_LAST, 0, NULL, 1);
3309 endp = startp = endp + 1;
3316 /* Convert new-style -- options to old-style. */
3317 translate_options (&argc, (const char *const **) &argv);
3319 /* Do language-specific adjustment/addition of flags. */
3320 lang_specific_driver (&argc, (const char *const **) &argv, &added_libraries);
3322 /* Scan argv twice. Here, the first time, just count how many switches
3323 there will be in their vector, and how many input files in theirs.
3324 Here we also parse the switches that cc itself uses (e.g. -v). */
3326 for (i = 1; i < argc; i++)
3328 if (! strcmp (argv[i], "-dumpspecs"))
3330 struct spec_list *sl;
3332 for (sl = specs; sl; sl = sl->next)
3333 printf ("*%s:\n%s\n\n", sl->name, *(sl->ptr_spec));
3334 if (link_command_spec)
3335 printf ("*link_command:\n%s\n\n", link_command_spec);
3338 else if (! strcmp (argv[i], "-dumpversion"))
3340 printf ("%s\n", spec_version);
3343 else if (! strcmp (argv[i], "-dumpmachine"))
3345 printf ("%s\n", spec_machine);
3348 else if (strcmp (argv[i], "-fversion") == 0)
3350 /* translate_options () has turned --version into -fversion. */
3351 printf (_("%s (GCC) %s\n"), programname, version_string);
3352 printf ("Copyright %s 2004 Free Software Foundation, Inc.\n",
3354 fputs (_("This is free software; see the source for copying conditions. There is NO\n\
3355 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\n"),
3359 else if (strcmp (argv[i], "-fhelp") == 0)
3361 /* translate_options () has turned --help into -fhelp. */
3362 print_help_list = 1;
3364 /* We will be passing a dummy file on to the sub-processes. */
3368 /* CPP driver cannot obtain switch from cc1_options. */
3370 add_preprocessor_option ("--help", 6);
3371 add_assembler_option ("--help", 6);
3372 add_linker_option ("--help", 6);
3374 else if (strcmp (argv[i], "-ftarget-help") == 0)
3376 /* translate_options() has turned --target-help into -ftarget-help. */
3377 target_help_flag = 1;
3379 /* We will be passing a dummy file on to the sub-processes. */
3383 /* CPP driver cannot obtain switch from cc1_options. */
3385 add_preprocessor_option ("--target-help", 13);
3386 add_assembler_option ("--target-help", 13);
3387 add_linker_option ("--target-help", 13);
3389 else if (! strcmp (argv[i], "-pass-exit-codes"))
3391 pass_exit_codes = 1;
3394 else if (! strcmp (argv[i], "-print-search-dirs"))
3395 print_search_dirs = 1;
3396 else if (! strcmp (argv[i], "-print-libgcc-file-name"))
3397 print_file_name = "libgcc.a";
3398 else if (! strncmp (argv[i], "-print-file-name=", 17))
3399 print_file_name = argv[i] + 17;
3400 else if (! strncmp (argv[i], "-print-prog-name=", 17))
3401 print_prog_name = argv[i] + 17;
3402 else if (! strcmp (argv[i], "-print-multi-lib"))
3403 print_multi_lib = 1;
3404 else if (! strcmp (argv[i], "-print-multi-directory"))
3405 print_multi_directory = 1;
3406 else if (! strcmp (argv[i], "-print-multi-os-directory"))
3407 print_multi_os_directory = 1;
3408 else if (! strncmp (argv[i], "-Wa,", 4))
3411 /* Pass the rest of this option to the assembler. */
3413 /* Split the argument at commas. */
3415 for (j = 4; argv[i][j]; j++)
3416 if (argv[i][j] == ',')
3418 add_assembler_option (argv[i] + prev, j - prev);
3422 /* Record the part after the last comma. */
3423 add_assembler_option (argv[i] + prev, j - prev);
3425 else if (! strncmp (argv[i], "-Wp,", 4))
3428 /* Pass the rest of this option to the preprocessor. */
3430 /* Split the argument at commas. */
3432 for (j = 4; argv[i][j]; j++)
3433 if (argv[i][j] == ',')
3435 add_preprocessor_option (argv[i] + prev, j - prev);
3439 /* Record the part after the last comma. */
3440 add_preprocessor_option (argv[i] + prev, j - prev);
3442 else if (argv[i][0] == '+' && argv[i][1] == 'e')
3443 /* The +e options to the C++ front-end. */
3445 else if (strncmp (argv[i], "-Wl,", 4) == 0)
3448 /* Split the argument at commas. */
3449 for (j = 3; argv[i][j]; j++)
3450 n_infiles += (argv[i][j] == ',');
3452 else if (strcmp (argv[i], "-Xlinker") == 0)
3455 fatal ("argument to `-Xlinker' is missing");
3460 else if (strcmp (argv[i], "-Xpreprocessor") == 0)
3463 fatal ("argument to `-Xpreprocessor' is missing");
3465 add_preprocessor_option (argv[i+1], strlen (argv[i+1]));
3467 else if (strcmp (argv[i], "-Xassembler") == 0)
3470 fatal ("argument to `-Xassembler' is missing");
3472 add_assembler_option (argv[i+1], strlen (argv[i+1]));
3474 else if (strcmp (argv[i], "-l") == 0)
3477 fatal ("argument to `-l' is missing");
3482 else if (strncmp (argv[i], "-l", 2) == 0)
3484 else if (strcmp (argv[i], "-save-temps") == 0)
3486 save_temps_flag = 1;
3489 else if (strcmp (argv[i], "-specs") == 0)
3491 struct user_specs *user = xmalloc (sizeof (struct user_specs));
3493 fatal ("argument to `-specs' is missing");
3495 user->next = (struct user_specs *) 0;
3496 user->filename = argv[i];
3497 if (user_specs_tail)
3498 user_specs_tail->next = user;
3500 user_specs_head = user;
3501 user_specs_tail = user;
3503 else if (strncmp (argv[i], "-specs=", 7) == 0)
3505 struct user_specs *user = xmalloc (sizeof (struct user_specs));
3506 if (strlen (argv[i]) == 7)
3507 fatal ("argument to `-specs=' is missing");
3509 user->next = (struct user_specs *) 0;
3510 user->filename = argv[i] + 7;
3511 if (user_specs_tail)
3512 user_specs_tail->next = user;
3514 user_specs_head = user;
3515 user_specs_tail = user;
3517 else if (strcmp (argv[i], "-time") == 0)
3519 else if (strcmp (argv[i], "-pipe") == 0)
3521 /* -pipe has to go into the switches array as well as
3526 else if (strcmp (argv[i], "-###") == 0)
3528 /* This is similar to -v except that there is no execution
3529 of the commands and the echoed arguments are quoted. It