name-lookup.c (lookup_arg_dependent): Use conditional timevars.
[official-gcc.git] / gcc / gcc.c
blobddec8db706b77d0f27aa2627414424e7088870f1
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, 2005, 2006, 2007, 2008, 2009,
4 2010, 2011
5 Free Software Foundation, Inc.
7 This file is part of GCC.
9 GCC is free software; you can redistribute it and/or modify it under
10 the terms of the GNU General Public License as published by the Free
11 Software Foundation; either version 3, or (at your option) any later
12 version.
14 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
15 WARRANTY; without even the implied warranty of MERCHANTABILITY or
16 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
17 for more details.
19 You should have received a copy of the GNU General Public License
20 along with GCC; see the file COPYING3. If not see
21 <http://www.gnu.org/licenses/>. */
23 /* This program is the user interface to the C compiler and possibly to
24 other compilers. It is used because compilation is a complicated procedure
25 which involves running several programs and passing temporary files between
26 them, forwarding the users switches to those programs selectively,
27 and deleting the temporary files at the end.
29 CC recognizes how to compile each input file by suffixes in the file names.
30 Once it knows which kind of compilation to perform, the procedure for
31 compilation is specified by a string called a "spec". */
33 #include "config.h"
34 #include "system.h"
35 #include "coretypes.h"
36 #include "multilib.h" /* before tm.h */
37 #include "tm.h"
38 #include "xregex.h"
39 #include "obstack.h"
40 #include "intl.h"
41 #include "prefix.h"
42 #include "gcc.h"
43 #include "diagnostic.h"
44 #include "flags.h"
45 #include "opts.h"
46 #include "params.h"
47 #include "vec.h"
48 #include "filenames.h"
50 /* By default there is no special suffix for target executables. */
51 /* FIXME: when autoconf is fixed, remove the host check - dj */
52 #if defined(TARGET_EXECUTABLE_SUFFIX) && defined(HOST_EXECUTABLE_SUFFIX)
53 #define HAVE_TARGET_EXECUTABLE_SUFFIX
54 #endif
56 /* By default there is no special suffix for host executables. */
57 #ifdef HOST_EXECUTABLE_SUFFIX
58 #define HAVE_HOST_EXECUTABLE_SUFFIX
59 #else
60 #define HOST_EXECUTABLE_SUFFIX ""
61 #endif
63 /* By default, the suffix for target object files is ".o". */
64 #ifdef TARGET_OBJECT_SUFFIX
65 #define HAVE_TARGET_OBJECT_SUFFIX
66 #else
67 #define TARGET_OBJECT_SUFFIX ".o"
68 #endif
70 static const char dir_separator_str[] = { DIR_SEPARATOR, 0 };
72 /* Most every one is fine with LIBRARY_PATH. For some, it conflicts. */
73 #ifndef LIBRARY_PATH_ENV
74 #define LIBRARY_PATH_ENV "LIBRARY_PATH"
75 #endif
77 /* If a stage of compilation returns an exit status >= 1,
78 compilation of that file ceases. */
80 #define MIN_FATAL_STATUS 1
82 /* Flag set by cppspec.c to 1. */
83 int is_cpp_driver;
85 /* Flag set to nonzero if an @file argument has been supplied to gcc. */
86 static bool at_file_supplied;
88 /* Definition of string containing the arguments given to configure. */
89 #include "configargs.h"
91 /* Flag saying to print the command line options understood by gcc and its
92 sub-processes. */
94 static int print_help_list;
96 /* Flag saying to print the version of gcc and its sub-processes. */
98 static int print_version;
100 /* Flag indicating whether we should ONLY print the command and
101 arguments (like verbose_flag) without executing the command.
102 Displayed arguments are quoted so that the generated command
103 line is suitable for execution. This is intended for use in
104 shell scripts to capture the driver-generated command line. */
105 static int verbose_only_flag;
107 /* Flag indicating how to print command line options of sub-processes. */
109 static int print_subprocess_help;
111 /* Whether we should report subprocess execution times to a file. */
113 FILE *report_times_to_file = NULL;
115 /* Nonzero means place this string before uses of /, so that include
116 and library files can be found in an alternate location. */
118 #ifdef TARGET_SYSTEM_ROOT
119 static const char *target_system_root = TARGET_SYSTEM_ROOT;
120 #else
121 static const char *target_system_root = 0;
122 #endif
124 /* Nonzero means pass the updated target_system_root to the compiler. */
126 static int target_system_root_changed;
128 /* Nonzero means append this string to target_system_root. */
130 static const char *target_sysroot_suffix = 0;
132 /* Nonzero means append this string to target_system_root for headers. */
134 static const char *target_sysroot_hdrs_suffix = 0;
136 /* Nonzero means write "temp" files in source directory
137 and use the source file's name in them, and don't delete them. */
139 static enum save_temps {
140 SAVE_TEMPS_NONE, /* no -save-temps */
141 SAVE_TEMPS_CWD, /* -save-temps in current directory */
142 SAVE_TEMPS_OBJ /* -save-temps in object directory */
143 } save_temps_flag;
145 /* Output file to use to get the object directory for -save-temps=obj */
146 static char *save_temps_prefix = 0;
147 static size_t save_temps_length = 0;
149 /* The compiler version. */
151 static const char *compiler_version;
153 /* The target version. */
155 static const char *const spec_version = DEFAULT_TARGET_VERSION;
157 /* The target machine. */
159 static const char *spec_machine = DEFAULT_TARGET_MACHINE;
161 /* Nonzero if cross-compiling.
162 When -b is used, the value comes from the `specs' file. */
164 #ifdef CROSS_DIRECTORY_STRUCTURE
165 static const char *cross_compile = "1";
166 #else
167 static const char *cross_compile = "0";
168 #endif
170 /* Greatest exit code of sub-processes that has been encountered up to
171 now. */
172 static int greatest_status = 1;
174 /* This is the obstack which we use to allocate many strings. */
176 static struct obstack obstack;
178 /* This is the obstack to build an environment variable to pass to
179 collect2 that describes all of the relevant switches of what to
180 pass the compiler in building the list of pointers to constructors
181 and destructors. */
183 static struct obstack collect_obstack;
185 /* Forward declaration for prototypes. */
186 struct path_prefix;
187 struct prefix_list;
189 static void init_spec (void);
190 static void store_arg (const char *, int, int);
191 static void insert_wrapper (const char *);
192 static char *load_specs (const char *);
193 static void read_specs (const char *, int);
194 static void set_spec (const char *, const char *);
195 static struct compiler *lookup_compiler (const char *, size_t, const char *);
196 static char *build_search_list (const struct path_prefix *, const char *,
197 bool, bool);
198 static void xputenv (const char *);
199 static void putenv_from_prefixes (const struct path_prefix *, const char *,
200 bool);
201 static int access_check (const char *, int);
202 static char *find_a_file (const struct path_prefix *, const char *, int, bool);
203 static void add_prefix (struct path_prefix *, const char *, const char *,
204 int, int, int);
205 static void add_sysrooted_prefix (struct path_prefix *, const char *,
206 const char *, int, int, int);
207 static char *skip_whitespace (char *);
208 static void delete_if_ordinary (const char *);
209 static void delete_temp_files (void);
210 static void delete_failure_queue (void);
211 static void clear_failure_queue (void);
212 static int check_live_switch (int, int);
213 static const char *handle_braces (const char *);
214 static inline bool input_suffix_matches (const char *, const char *);
215 static inline bool switch_matches (const char *, const char *, int);
216 static inline void mark_matching_switches (const char *, const char *, int);
217 static inline void process_marked_switches (void);
218 static const char *process_brace_body (const char *, const char *, const char *, int, int);
219 static const struct spec_function *lookup_spec_function (const char *);
220 static const char *eval_spec_function (const char *, const char *);
221 static const char *handle_spec_function (const char *);
222 static char *save_string (const char *, int);
223 static void set_collect_gcc_options (void);
224 static int do_spec_1 (const char *, int, const char *);
225 static int do_spec_2 (const char *);
226 static void do_option_spec (const char *, const char *);
227 static void do_self_spec (const char *);
228 static const char *find_file (const char *);
229 static int is_directory (const char *, bool);
230 static const char *validate_switches (const char *);
231 static void validate_all_switches (void);
232 static inline void validate_switches_from_spec (const char *);
233 static void give_switch (int, int);
234 static int used_arg (const char *, int);
235 static int default_arg (const char *, int);
236 static void set_multilib_dir (void);
237 static void print_multilib_info (void);
238 static void perror_with_name (const char *);
239 static void display_help (void);
240 static void add_preprocessor_option (const char *, int);
241 static void add_assembler_option (const char *, int);
242 static void add_linker_option (const char *, int);
243 static void process_command (unsigned int, struct cl_decoded_option *);
244 static int execute (void);
245 static void alloc_args (void);
246 static void clear_args (void);
247 static void fatal_signal (int);
248 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
249 static void init_gcc_specs (struct obstack *, const char *, const char *,
250 const char *);
251 #endif
252 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
253 static const char *convert_filename (const char *, int, int);
254 #endif
256 static const char *getenv_spec_function (int, const char **);
257 static const char *if_exists_spec_function (int, const char **);
258 static const char *if_exists_else_spec_function (int, const char **);
259 static const char *replace_outfile_spec_function (int, const char **);
260 static const char *remove_outfile_spec_function (int, const char **);
261 static const char *version_compare_spec_function (int, const char **);
262 static const char *include_spec_function (int, const char **);
263 static const char *find_file_spec_function (int, const char **);
264 static const char *find_plugindir_spec_function (int, const char **);
265 static const char *print_asm_header_spec_function (int, const char **);
266 static const char *compare_debug_dump_opt_spec_function (int, const char **);
267 static const char *compare_debug_self_opt_spec_function (int, const char **);
268 static const char *compare_debug_auxbase_opt_spec_function (int, const char **);
269 static const char *pass_through_libs_spec_func (int, const char **);
271 /* The Specs Language
273 Specs are strings containing lines, each of which (if not blank)
274 is made up of a program name, and arguments separated by spaces.
275 The program name must be exact and start from root, since no path
276 is searched and it is unreliable to depend on the current working directory.
277 Redirection of input or output is not supported; the subprograms must
278 accept filenames saying what files to read and write.
280 In addition, the specs can contain %-sequences to substitute variable text
281 or for conditional text. Here is a table of all defined %-sequences.
282 Note that spaces are not generated automatically around the results of
283 expanding these sequences; therefore, you can concatenate them together
284 or with constant text in a single argument.
286 %% substitute one % into the program name or argument.
287 %i substitute the name of the input file being processed.
288 %b substitute the basename of the input file being processed.
289 This is the substring up to (and not including) the last period
290 and not including the directory unless -save-temps was specified
291 to put temporaries in a different location.
292 %B same as %b, but include the file suffix (text after the last period).
293 %gSUFFIX
294 substitute a file name that has suffix SUFFIX and is chosen
295 once per compilation, and mark the argument a la %d. To reduce
296 exposure to denial-of-service attacks, the file name is now
297 chosen in a way that is hard to predict even when previously
298 chosen file names are known. For example, `%g.s ... %g.o ... %g.s'
299 might turn into `ccUVUUAU.s ccXYAXZ12.o ccUVUUAU.s'. SUFFIX matches
300 the regexp "[.0-9A-Za-z]*%O"; "%O" is treated exactly as if it
301 had been pre-processed. Previously, %g was simply substituted
302 with a file name chosen once per compilation, without regard
303 to any appended suffix (which was therefore treated just like
304 ordinary text), making such attacks more likely to succeed.
305 %|SUFFIX
306 like %g, but if -pipe is in effect, expands simply to "-".
307 %mSUFFIX
308 like %g, but if -pipe is in effect, expands to nothing. (We have both
309 %| and %m to accommodate differences between system assemblers; see
310 the AS_NEEDS_DASH_FOR_PIPED_INPUT target macro.)
311 %uSUFFIX
312 like %g, but generates a new temporary file name even if %uSUFFIX
313 was already seen.
314 %USUFFIX
315 substitutes the last file name generated with %uSUFFIX, generating a
316 new one if there is no such last file name. In the absence of any
317 %uSUFFIX, this is just like %gSUFFIX, except they don't share
318 the same suffix "space", so `%g.s ... %U.s ... %g.s ... %U.s'
319 would involve the generation of two distinct file names, one
320 for each `%g.s' and another for each `%U.s'. Previously, %U was
321 simply substituted with a file name chosen for the previous %u,
322 without regard to any appended suffix.
323 %jSUFFIX
324 substitutes the name of the HOST_BIT_BUCKET, if any, and if it is
325 writable, and if save-temps is off; otherwise, substitute the name
326 of a temporary file, just like %u. This temporary file is not
327 meant for communication between processes, but rather as a junk
328 disposal mechanism.
329 %.SUFFIX
330 substitutes .SUFFIX for the suffixes of a matched switch's args when
331 it is subsequently output with %*. SUFFIX is terminated by the next
332 space or %.
333 %d marks the argument containing or following the %d as a
334 temporary file name, so that that file will be deleted if GCC exits
335 successfully. Unlike %g, this contributes no text to the argument.
336 %w marks the argument containing or following the %w as the
337 "output file" of this compilation. This puts the argument
338 into the sequence of arguments that %o will substitute later.
339 %V indicates that this compilation produces no "output file".
340 %W{...}
341 like %{...} but mark last argument supplied within
342 as a file to be deleted on failure.
343 %o substitutes the names of all the output files, with spaces
344 automatically placed around them. You should write spaces
345 around the %o as well or the results are undefined.
346 %o is for use in the specs for running the linker.
347 Input files whose names have no recognized suffix are not compiled
348 at all, but they are included among the output files, so they will
349 be linked.
350 %O substitutes the suffix for object files. Note that this is
351 handled specially when it immediately follows %g, %u, or %U
352 (with or without a suffix argument) because of the need for
353 those to form complete file names. The handling is such that
354 %O is treated exactly as if it had already been substituted,
355 except that %g, %u, and %U do not currently support additional
356 SUFFIX characters following %O as they would following, for
357 example, `.o'.
358 %I Substitute any of -iprefix (made from GCC_EXEC_PREFIX), -isysroot
359 (made from TARGET_SYSTEM_ROOT), -isystem (made from COMPILER_PATH
360 and -B options) and -imultilib as necessary.
361 %s current argument is the name of a library or startup file of some sort.
362 Search for that file in a standard list of directories
363 and substitute the full name found.
364 %eSTR Print STR as an error message. STR is terminated by a newline.
365 Use this when inconsistent options are detected.
366 %nSTR Print STR as a notice. STR is terminated by a newline.
367 %x{OPTION} Accumulate an option for %X.
368 %X Output the accumulated linker options specified by compilations.
369 %Y Output the accumulated assembler options specified by compilations.
370 %Z Output the accumulated preprocessor options specified by compilations.
371 %a process ASM_SPEC as a spec.
372 This allows config.h to specify part of the spec for running as.
373 %A process ASM_FINAL_SPEC as a spec. A capital A is actually
374 used here. This can be used to run a post-processor after the
375 assembler has done its job.
376 %D Dump out a -L option for each directory in startfile_prefixes.
377 If multilib_dir is set, extra entries are generated with it affixed.
378 %l process LINK_SPEC as a spec.
379 %L process LIB_SPEC as a spec.
380 %G process LIBGCC_SPEC as a spec.
381 %R Output the concatenation of target_system_root and
382 target_sysroot_suffix.
383 %S process STARTFILE_SPEC as a spec. A capital S is actually used here.
384 %E process ENDFILE_SPEC as a spec. A capital E is actually used here.
385 %C process CPP_SPEC as a spec.
386 %1 process CC1_SPEC as a spec.
387 %2 process CC1PLUS_SPEC as a spec.
388 %* substitute the variable part of a matched option. (See below.)
389 Note that each comma in the substituted string is replaced by
390 a single space.
391 %<S remove all occurrences of -S from the command line.
392 Note - this command is position dependent. % commands in the
393 spec string before this one will see -S, % commands in the
394 spec string after this one will not.
395 %>S Similar to "%<S", but keep it in the GCC command line.
396 %<S* remove all occurrences of all switches beginning with -S from the
397 command line.
398 %:function(args)
399 Call the named function FUNCTION, passing it ARGS. ARGS is
400 first processed as a nested spec string, then split into an
401 argument vector in the usual fashion. The function returns
402 a string which is processed as if it had appeared literally
403 as part of the current spec.
404 %{S} substitutes the -S switch, if that switch was given to GCC.
405 If that switch was not specified, this substitutes nothing.
406 Here S is a metasyntactic variable.
407 %{S*} substitutes all the switches specified to GCC whose names start
408 with -S. This is used for -o, -I, etc; switches that take
409 arguments. GCC considers `-o foo' as being one switch whose
410 name starts with `o'. %{o*} would substitute this text,
411 including the space; thus, two arguments would be generated.
412 %{S*&T*} likewise, but preserve order of S and T options (the order
413 of S and T in the spec is not significant). Can be any number
414 of ampersand-separated variables; for each the wild card is
415 optional. Useful for CPP as %{D*&U*&A*}.
417 %{S:X} substitutes X, if the -S switch was given to GCC.
418 %{!S:X} substitutes X, if the -S switch was NOT given to GCC.
419 %{S*:X} substitutes X if one or more switches whose names start
420 with -S was given to GCC. Normally X is substituted only
421 once, no matter how many such switches appeared. However,
422 if %* appears somewhere in X, then X will be substituted
423 once for each matching switch, with the %* replaced by the
424 part of that switch that matched the '*'.
425 %{.S:X} substitutes X, if processing a file with suffix S.
426 %{!.S:X} substitutes X, if NOT processing a file with suffix S.
427 %{,S:X} substitutes X, if processing a file which will use spec S.
428 %{!,S:X} substitutes X, if NOT processing a file which will use spec S.
430 %{S|T:X} substitutes X if either -S or -T was given to GCC. This may be
431 combined with '!', '.', ',', and '*' as above binding stronger
432 than the OR.
433 If %* appears in X, all of the alternatives must be starred, and
434 only the first matching alternative is substituted.
435 %{S:X; if S was given to GCC, substitutes X;
436 T:Y; else if T was given to GCC, substitutes Y;
437 :D} else substitutes D. There can be as many clauses as you need.
438 This may be combined with '.', '!', ',', '|', and '*' as above.
440 %(Spec) processes a specification defined in a specs file as *Spec:
442 The conditional text X in a %{S:X} or similar construct may contain
443 other nested % constructs or spaces, or even newlines. They are
444 processed as usual, as described above. Trailing white space in X is
445 ignored. White space may also appear anywhere on the left side of the
446 colon in these constructs, except between . or * and the corresponding
447 word.
449 The -O, -f, -m, and -W switches are handled specifically in these
450 constructs. If another value of -O or the negated form of a -f, -m, or
451 -W switch is found later in the command line, the earlier switch
452 value is ignored, except with {S*} where S is just one letter; this
453 passes all matching options.
455 The character | at the beginning of the predicate text is used to indicate
456 that a command should be piped to the following command, but only if -pipe
457 is specified.
459 Note that it is built into GCC which switches take arguments and which
460 do not. You might think it would be useful to generalize this to
461 allow each compiler's spec to say which switches take arguments. But
462 this cannot be done in a consistent fashion. GCC cannot even decide
463 which input files have been specified without knowing which switches
464 take arguments, and it must know which input files to compile in order
465 to tell which compilers to run.
467 GCC also knows implicitly that arguments starting in `-l' are to be
468 treated as compiler output files, and passed to the linker in their
469 proper position among the other output files. */
471 /* Define the macros used for specs %a, %l, %L, %S, %C, %1. */
473 /* config.h can define ASM_SPEC to provide extra args to the assembler
474 or extra switch-translations. */
475 #ifndef ASM_SPEC
476 #define ASM_SPEC ""
477 #endif
479 /* config.h can define ASM_FINAL_SPEC to run a post processor after
480 the assembler has run. */
481 #ifndef ASM_FINAL_SPEC
482 #define ASM_FINAL_SPEC ""
483 #endif
485 /* config.h can define CPP_SPEC to provide extra args to the C preprocessor
486 or extra switch-translations. */
487 #ifndef CPP_SPEC
488 #define CPP_SPEC ""
489 #endif
491 /* config.h can define CC1_SPEC to provide extra args to cc1 and cc1plus
492 or extra switch-translations. */
493 #ifndef CC1_SPEC
494 #define CC1_SPEC ""
495 #endif
497 /* config.h can define CC1PLUS_SPEC to provide extra args to cc1plus
498 or extra switch-translations. */
499 #ifndef CC1PLUS_SPEC
500 #define CC1PLUS_SPEC ""
501 #endif
503 /* config.h can define LINK_SPEC to provide extra args to the linker
504 or extra switch-translations. */
505 #ifndef LINK_SPEC
506 #define LINK_SPEC ""
507 #endif
509 /* config.h can define LIB_SPEC to override the default libraries. */
510 #ifndef LIB_SPEC
511 #define LIB_SPEC "%{!shared:%{g*:-lg} %{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p}}"
512 #endif
514 /* mudflap specs */
515 #ifndef MFWRAP_SPEC
516 /* XXX: valid only for GNU ld */
517 /* XXX: should exactly match hooks provided by libmudflap.a */
518 #define MFWRAP_SPEC " %{static: %{fmudflap|fmudflapth: \
519 --wrap=malloc --wrap=free --wrap=calloc --wrap=realloc\
520 --wrap=mmap --wrap=mmap64 --wrap=munmap --wrap=alloca\
521 } %{fmudflapth: --wrap=pthread_create\
522 }} %{fmudflap|fmudflapth: --wrap=main}"
523 #endif
524 #ifndef MFLIB_SPEC
525 #define MFLIB_SPEC "%{fmudflap|fmudflapth: -export-dynamic}"
526 #endif
528 /* When using -fsplit-stack we need to wrap pthread_create, in order
529 to initialize the stack guard. We always use wrapping, rather than
530 shared library ordering, and we keep the wrapper function in
531 libgcc. This is not yet a real spec, though it could become one;
532 it is currently just stuffed into LINK_SPEC. FIXME: This wrapping
533 only works with GNU ld and gold. FIXME: This is incompatible with
534 -fmudflap when linking statically, which wants to do its own
535 wrapping. */
536 #define STACK_SPLIT_SPEC " %{fsplit-stack: --wrap=pthread_create}"
538 /* config.h can define LIBGCC_SPEC to override how and when libgcc.a is
539 included. */
540 #ifndef LIBGCC_SPEC
541 #if defined(REAL_LIBGCC_SPEC)
542 #define LIBGCC_SPEC REAL_LIBGCC_SPEC
543 #elif defined(LINK_LIBGCC_SPECIAL_1)
544 /* Have gcc do the search for libgcc.a. */
545 #define LIBGCC_SPEC "libgcc.a%s"
546 #else
547 #define LIBGCC_SPEC "-lgcc"
548 #endif
549 #endif
551 /* config.h can define STARTFILE_SPEC to override the default crt0 files. */
552 #ifndef STARTFILE_SPEC
553 #define STARTFILE_SPEC \
554 "%{!shared:%{pg:gcrt0%O%s}%{!pg:%{p:mcrt0%O%s}%{!p:crt0%O%s}}}"
555 #endif
557 /* config.h can define ENDFILE_SPEC to override the default crtn files. */
558 #ifndef ENDFILE_SPEC
559 #define ENDFILE_SPEC ""
560 #endif
562 #ifndef LINKER_NAME
563 #define LINKER_NAME "collect2"
564 #endif
566 #ifdef HAVE_AS_DEBUG_PREFIX_MAP
567 #define ASM_MAP " %{fdebug-prefix-map=*:--debug-prefix-map %*}"
568 #else
569 #define ASM_MAP ""
570 #endif
572 /* Define ASM_DEBUG_SPEC to be a spec suitable for translating '-g'
573 to the assembler. */
574 #ifndef ASM_DEBUG_SPEC
575 # if defined(DBX_DEBUGGING_INFO) && defined(DWARF2_DEBUGGING_INFO) \
576 && defined(HAVE_AS_GDWARF2_DEBUG_FLAG) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
577 # define ASM_DEBUG_SPEC \
578 (PREFERRED_DEBUGGING_TYPE == DBX_DEBUG \
579 ? "%{!g0:%{gdwarf-2*:--gdwarf2}%{!gdwarf-2*:%{g*:--gstabs}}}" ASM_MAP \
580 : "%{!g0:%{gstabs*:--gstabs}%{!gstabs*:%{g*:--gdwarf2}}}" ASM_MAP)
581 # else
582 # if defined(DBX_DEBUGGING_INFO) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
583 # define ASM_DEBUG_SPEC "%{g*:%{!g0:--gstabs}}" ASM_MAP
584 # endif
585 # if defined(DWARF2_DEBUGGING_INFO) && defined(HAVE_AS_GDWARF2_DEBUG_FLAG)
586 # define ASM_DEBUG_SPEC "%{g*:%{!g0:--gdwarf2}}" ASM_MAP
587 # endif
588 # endif
589 #endif
590 #ifndef ASM_DEBUG_SPEC
591 # define ASM_DEBUG_SPEC ""
592 #endif
594 /* Here is the spec for running the linker, after compiling all files. */
596 /* This is overridable by the target in case they need to specify the
597 -lgcc and -lc order specially, yet not require them to override all
598 of LINK_COMMAND_SPEC. */
599 #ifndef LINK_GCC_C_SEQUENCE_SPEC
600 #define LINK_GCC_C_SEQUENCE_SPEC "%G %L %G"
601 #endif
603 #ifndef LINK_SSP_SPEC
604 #ifdef TARGET_LIBC_PROVIDES_SSP
605 #define LINK_SSP_SPEC "%{fstack-protector:}"
606 #else
607 #define LINK_SSP_SPEC "%{fstack-protector|fstack-protector-all:-lssp_nonshared -lssp}"
608 #endif
609 #endif
611 #ifndef LINK_PIE_SPEC
612 #ifdef HAVE_LD_PIE
613 #define LINK_PIE_SPEC "%{pie:-pie} "
614 #else
615 #define LINK_PIE_SPEC "%{pie:} "
616 #endif
617 #endif
619 #ifndef LINK_BUILDID_SPEC
620 # if defined(HAVE_LD_BUILDID) && defined(ENABLE_LD_BUILDID)
621 # define LINK_BUILDID_SPEC "%{!r:--build-id} "
622 # endif
623 #endif
625 /* Conditional to test whether the LTO plugin is used or not.
626 FIXME: For slim LTO we will need to enable plugin unconditionally. This
627 still cause problems with PLUGIN_LD != LD and when plugin is built but
628 not useable. For GCC 4.6 we don't support slim LTO and thus we can enable
629 plugin only when LTO is enabled. We still honor explicit
630 -fuse-linker-plugin if the linker used understands -plugin. */
632 /* The linker has some plugin support. */
633 #if HAVE_LTO_PLUGIN > 0
634 /* The linker used has full plugin support, use LTO plugin by default. */
635 #if HAVE_LTO_PLUGIN == 2
636 #define PLUGIN_COND "!fno-use-linker-plugin:%{flto|flto=*|fuse-linker-plugin"
637 #define PLUGIN_COND_CLOSE "}"
638 #else
639 /* The linker used has limited plugin support, use LTO plugin with explicit
640 -fuse-linker-plugin. */
641 #define PLUGIN_COND "fuse-linker-plugin"
642 #define PLUGIN_COND_CLOSE ""
643 #endif
644 #define LINK_PLUGIN_SPEC \
645 "%{"PLUGIN_COND": \
646 -plugin %(linker_plugin_file) \
647 -plugin-opt=%(lto_wrapper) \
648 -plugin-opt=-fresolution=%u.res \
649 %{!nostdlib:%{!nodefaultlibs:%:pass-through-libs(%(link_gcc_c_sequence))}} \
650 }"PLUGIN_COND_CLOSE
651 #else
652 /* The linker used doesn't support -plugin, reject -fuse-linker-plugin. */
653 #define LINK_PLUGIN_SPEC "%{fuse-linker-plugin:\
654 %e-fuse-linker-plugin is not supported in this configuration}"
655 #endif
658 /* -u* was put back because both BSD and SysV seem to support it. */
659 /* %{static:} simply prevents an error message if the target machine
660 doesn't handle -static. */
661 /* We want %{T*} after %{L*} and %D so that it can be used to specify linker
662 scripts which exist in user specified directories, or in standard
663 directories. */
664 /* We pass any -flto flags on to the linker, which is expected
665 to understand them. In practice, this means it had better be collect2. */
666 /* %{e*} includes -export-dynamic; see comment in common.opt. */
667 #ifndef LINK_COMMAND_SPEC
668 #define LINK_COMMAND_SPEC "\
669 %{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:\
670 %(linker) " \
671 LINK_PLUGIN_SPEC \
672 "%{flto|flto=*:%<fcompare-debug*} \
673 %{flto} %{flto=*} %l " LINK_PIE_SPEC \
674 "%X %{o*} %{e*} %{N} %{n} %{r}\
675 %{s} %{t} %{u*} %{z} %{Z} %{!nostdlib:%{!nostartfiles:%S}}\
676 %{static:} %{L*} %(mfwrap) %(link_libgcc) %o\
677 %{fopenmp|ftree-parallelize-loops=*:%:include(libgomp.spec)%(link_gomp)}\
678 %(mflib) " STACK_SPLIT_SPEC "\
679 %{fprofile-arcs|fprofile-generate*|coverage:-lgcov}\
680 %{!nostdlib:%{!nodefaultlibs:%(link_ssp) %(link_gcc_c_sequence)}}\
681 %{!nostdlib:%{!nostartfiles:%E}} %{T*} }}}}}}"
682 #endif
684 #ifndef LINK_LIBGCC_SPEC
685 /* Generate -L options for startfile prefix list. */
686 # define LINK_LIBGCC_SPEC "%D"
687 #endif
689 #ifndef STARTFILE_PREFIX_SPEC
690 # define STARTFILE_PREFIX_SPEC ""
691 #endif
693 #ifndef SYSROOT_SPEC
694 # define SYSROOT_SPEC "--sysroot=%R"
695 #endif
697 #ifndef SYSROOT_SUFFIX_SPEC
698 # define SYSROOT_SUFFIX_SPEC ""
699 #endif
701 #ifndef SYSROOT_HEADERS_SUFFIX_SPEC
702 # define SYSROOT_HEADERS_SUFFIX_SPEC ""
703 #endif
705 static const char *asm_debug;
706 static const char *cpp_spec = CPP_SPEC;
707 static const char *cc1_spec = CC1_SPEC;
708 static const char *cc1plus_spec = CC1PLUS_SPEC;
709 static const char *link_gcc_c_sequence_spec = LINK_GCC_C_SEQUENCE_SPEC;
710 static const char *link_ssp_spec = LINK_SSP_SPEC;
711 static const char *asm_spec = ASM_SPEC;
712 static const char *asm_final_spec = ASM_FINAL_SPEC;
713 static const char *link_spec = LINK_SPEC;
714 static const char *lib_spec = LIB_SPEC;
715 static const char *mfwrap_spec = MFWRAP_SPEC;
716 static const char *mflib_spec = MFLIB_SPEC;
717 static const char *link_gomp_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 *linker_name_spec = LINKER_NAME;
722 static const char *linker_plugin_file_spec = "";
723 static const char *lto_wrapper_spec = "";
724 static const char *lto_gcc_spec = "";
725 static const char *link_command_spec = LINK_COMMAND_SPEC;
726 static const char *link_libgcc_spec = LINK_LIBGCC_SPEC;
727 static const char *startfile_prefix_spec = STARTFILE_PREFIX_SPEC;
728 static const char *sysroot_spec = SYSROOT_SPEC;
729 static const char *sysroot_suffix_spec = SYSROOT_SUFFIX_SPEC;
730 static const char *sysroot_hdrs_suffix_spec = SYSROOT_HEADERS_SUFFIX_SPEC;
731 static const char *self_spec = "";
733 /* Standard options to cpp, cc1, and as, to reduce duplication in specs.
734 There should be no need to override these in target dependent files,
735 but we need to copy them to the specs file so that newer versions
736 of the GCC driver can correctly drive older tool chains with the
737 appropriate -B options. */
739 /* When cpplib handles traditional preprocessing, get rid of this, and
740 call cc1 (or cc1obj in objc/lang-specs.h) from the main specs so
741 that we default the front end language better. */
742 static const char *trad_capable_cpp =
743 "cc1 -E %{traditional|traditional-cpp:-traditional-cpp}";
745 /* We don't wrap .d files in %W{} since a missing .d file, and
746 therefore no dependency entry, confuses make into thinking a .o
747 file that happens to exist is up-to-date. */
748 static const char *cpp_unique_options =
749 "%{!Q:-quiet} %{nostdinc*} %{C} %{CC} %{v} %{I*&F*} %{P} %I\
750 %{MD:-MD %{!o:%b.d}%{o*:%.d%*}}\
751 %{MMD:-MMD %{!o:%b.d}%{o*:%.d%*}}\
752 %{M} %{MM} %{MF*} %{MG} %{MP} %{MQ*} %{MT*}\
753 %{!E:%{!M:%{!MM:%{!MT:%{!MQ:%{MD|MMD:%{o*:-MQ %*}}}}}}}\
754 %{remap} %{g3|ggdb3|gstabs3|gcoff3|gxcoff3|gvms3:-dD}\
755 %{!iplugindir*:%{fplugin*:%:find-plugindir()}}\
756 %{H} %C %{D*&U*&A*} %{i*} %Z %i\
757 %{fmudflap:-D_MUDFLAP -include mf-runtime.h}\
758 %{fmudflapth:-D_MUDFLAP -D_MUDFLAPTH -include mf-runtime.h}\
759 %{E|M|MM:%W{o*}}";
761 /* This contains cpp options which are common with cc1_options and are passed
762 only when preprocessing only to avoid duplication. We pass the cc1 spec
763 options to the preprocessor so that it the cc1 spec may manipulate
764 options used to set target flags. Those special target flags settings may
765 in turn cause preprocessor symbols to be defined specially. */
766 static const char *cpp_options =
767 "%(cpp_unique_options) %1 %{m*} %{std*&ansi&trigraphs} %{W*&pedantic*} %{w}\
768 %{f*} %{g*:%{!g0:%{g*} %{!fno-working-directory:-fworking-directory}}} %{O*}\
769 %{undef} %{save-temps*:-fpch-preprocess}";
771 /* This contains cpp options which are not passed when the preprocessor
772 output will be used by another program. */
773 static const char *cpp_debug_options = "%{d*}";
775 /* NB: This is shared amongst all front-ends, except for Ada. */
776 static const char *cc1_options =
777 "%{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\
778 %{!iplugindir*:%{fplugin*:%:find-plugindir()}}\
779 %1 %{!Q:-quiet} %{!dumpbase:-dumpbase %B} %{d*} %{m*} %{aux-info*}\
780 %{fcompare-debug-second:%:compare-debug-auxbase-opt(%b)} \
781 %{!fcompare-debug-second:%{c|S:%{o*:-auxbase-strip %*}%{!o*:-auxbase %b}}}%{!c:%{!S:-auxbase %b}} \
782 %{g*} %{O*} %{W*&pedantic*} %{w} %{std*&ansi&trigraphs}\
783 %{v:-version} %{pg:-p} %{p} %{f*} %{undef}\
784 %{Qn:-fno-ident} %{Qy:} %{-help:--help}\
785 %{-target-help:--target-help}\
786 %{-version:--version}\
787 %{-help=*:--help=%*}\
788 %{!fsyntax-only:%{S:%W{o*}%{!o*:-o %b.s}}}\
789 %{fsyntax-only:-o %j} %{-param*}\
790 %{fmudflap|fmudflapth:-fno-builtin -fno-merge-constants}\
791 %{coverage:-fprofile-arcs -ftest-coverage}";
793 static const char *asm_options =
794 "%{-target-help:%:print-asm-header()} "
795 #if HAVE_GNU_AS
796 /* If GNU AS is used, then convert -w (no warnings), -I, and -v
797 to the assembler equivalents. */
798 "%{v} %{w:-W} %{I*} "
799 #endif
800 "%a %Y %{c:%W{o*}%{!o*:-o %w%b%O}}%{!c:-o %d%w%u%O}";
802 static const char *invoke_as =
803 #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT
804 "%{!fwpa:\
805 %{fcompare-debug=*|fdump-final-insns=*:%:compare-debug-dump-opt()}\
806 %{!S:-o %|.s |\n as %(asm_options) %|.s %A }\
808 #else
809 "%{!fwpa:\
810 %{fcompare-debug=*|fdump-final-insns=*:%:compare-debug-dump-opt()}\
811 %{!S:-o %|.s |\n as %(asm_options) %m.s %A }\
813 #endif
815 /* Some compilers have limits on line lengths, and the multilib_select
816 and/or multilib_matches strings can be very long, so we build them at
817 run time. */
818 static struct obstack multilib_obstack;
819 static const char *multilib_select;
820 static const char *multilib_matches;
821 static const char *multilib_defaults;
822 static const char *multilib_exclusions;
824 /* Check whether a particular argument is a default argument. */
826 #ifndef MULTILIB_DEFAULTS
827 #define MULTILIB_DEFAULTS { "" }
828 #endif
830 static const char *const multilib_defaults_raw[] = MULTILIB_DEFAULTS;
832 #ifndef DRIVER_SELF_SPECS
833 #define DRIVER_SELF_SPECS ""
834 #endif
836 /* Adding -fopenmp should imply pthreads. This is particularly important
837 for targets that use different start files and suchlike. */
838 #ifndef GOMP_SELF_SPECS
839 #define GOMP_SELF_SPECS "%{fopenmp|ftree-parallelize-loops=*: -pthread}"
840 #endif
842 static const char *const driver_self_specs[] = {
843 "%{fdump-final-insns:-fdump-final-insns=.} %<fdump-final-insns",
844 DRIVER_SELF_SPECS, CONFIGURE_SPECS, GOMP_SELF_SPECS
847 #ifndef OPTION_DEFAULT_SPECS
848 #define OPTION_DEFAULT_SPECS { "", "" }
849 #endif
851 struct default_spec
853 const char *name;
854 const char *spec;
857 static const struct default_spec
858 option_default_specs[] = { OPTION_DEFAULT_SPECS };
860 struct user_specs
862 struct user_specs *next;
863 const char *filename;
866 static struct user_specs *user_specs_head, *user_specs_tail;
869 /* Record the mapping from file suffixes for compilation specs. */
871 struct compiler
873 const char *suffix; /* Use this compiler for input files
874 whose names end in this suffix. */
876 const char *spec; /* To use this compiler, run this spec. */
878 const char *cpp_spec; /* If non-NULL, substitute this spec
879 for `%C', rather than the usual
880 cpp_spec. */
881 const int combinable; /* If nonzero, compiler can deal with
882 multiple source files at once (IMA). */
883 const int needs_preprocessing; /* If nonzero, source files need to
884 be run through a preprocessor. */
887 /* Pointer to a vector of `struct compiler' that gives the spec for
888 compiling a file, based on its suffix.
889 A file that does not end in any of these suffixes will be passed
890 unchanged to the loader and nothing else will be done to it.
892 An entry containing two 0s is used to terminate the vector.
894 If multiple entries match a file, the last matching one is used. */
896 static struct compiler *compilers;
898 /* Number of entries in `compilers', not counting the null terminator. */
900 static int n_compilers;
902 /* The default list of file name suffixes and their compilation specs. */
904 static const struct compiler default_compilers[] =
906 /* Add lists of suffixes of known languages here. If those languages
907 were not present when we built the driver, we will hit these copies
908 and be given a more meaningful error than "file not used since
909 linking is not done". */
910 {".m", "#Objective-C", 0, 0, 0}, {".mi", "#Objective-C", 0, 0, 0},
911 {".mm", "#Objective-C++", 0, 0, 0}, {".M", "#Objective-C++", 0, 0, 0},
912 {".mii", "#Objective-C++", 0, 0, 0},
913 {".cc", "#C++", 0, 0, 0}, {".cxx", "#C++", 0, 0, 0},
914 {".cpp", "#C++", 0, 0, 0}, {".cp", "#C++", 0, 0, 0},
915 {".c++", "#C++", 0, 0, 0}, {".C", "#C++", 0, 0, 0},
916 {".CPP", "#C++", 0, 0, 0}, {".ii", "#C++", 0, 0, 0},
917 {".ads", "#Ada", 0, 0, 0}, {".adb", "#Ada", 0, 0, 0},
918 {".f", "#Fortran", 0, 0, 0}, {".F", "#Fortran", 0, 0, 0},
919 {".for", "#Fortran", 0, 0, 0}, {".FOR", "#Fortran", 0, 0, 0},
920 {".ftn", "#Fortran", 0, 0, 0}, {".FTN", "#Fortran", 0, 0, 0},
921 {".fpp", "#Fortran", 0, 0, 0}, {".FPP", "#Fortran", 0, 0, 0},
922 {".f90", "#Fortran", 0, 0, 0}, {".F90", "#Fortran", 0, 0, 0},
923 {".f95", "#Fortran", 0, 0, 0}, {".F95", "#Fortran", 0, 0, 0},
924 {".f03", "#Fortran", 0, 0, 0}, {".F03", "#Fortran", 0, 0, 0},
925 {".f08", "#Fortran", 0, 0, 0}, {".F08", "#Fortran", 0, 0, 0},
926 {".r", "#Ratfor", 0, 0, 0},
927 {".p", "#Pascal", 0, 0, 0}, {".pas", "#Pascal", 0, 0, 0},
928 {".java", "#Java", 0, 0, 0}, {".class", "#Java", 0, 0, 0},
929 {".zip", "#Java", 0, 0, 0}, {".jar", "#Java", 0, 0, 0},
930 {".go", "#Go", 0, 1, 0},
931 /* Next come the entries for C. */
932 {".c", "@c", 0, 0, 1},
933 {"@c",
934 /* cc1 has an integrated ISO C preprocessor. We should invoke the
935 external preprocessor if -save-temps is given. */
936 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\
937 %{!E:%{!M:%{!MM:\
938 %{traditional:\
939 %eGNU C no longer supports -traditional without -E}\
940 %{save-temps*|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
941 %(cpp_options) -o %{save-temps*:%b.i} %{!save-temps*:%g.i} \n\
942 cc1 -fpreprocessed %{save-temps*:%b.i} %{!save-temps*:%g.i} \
943 %(cc1_options)}\
944 %{!save-temps*:%{!traditional-cpp:%{!no-integrated-cpp:\
945 cc1 %(cpp_unique_options) %(cc1_options)}}}\
946 %{!fsyntax-only:%(invoke_as)}}}}", 0, 0, 1},
947 {"-",
948 "%{!E:%e-E or -x required when input is from standard input}\
949 %(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)", 0, 0, 0},
950 {".h", "@c-header", 0, 0, 0},
951 {"@c-header",
952 /* cc1 has an integrated ISO C preprocessor. We should invoke the
953 external preprocessor if -save-temps is given. */
954 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\
955 %{!E:%{!M:%{!MM:\
956 %{save-temps*|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
957 %(cpp_options) -o %{save-temps*:%b.i} %{!save-temps*:%g.i} \n\
958 cc1 -fpreprocessed %{save-temps*:%b.i} %{!save-temps*:%g.i} \
959 %(cc1_options)\
960 %{!fdump-ada-spec*:-o %g.s %{!o*:--output-pch=%i.gch}\
961 %W{o*:--output-pch=%*}}%V}\
962 %{!save-temps*:%{!traditional-cpp:%{!no-integrated-cpp:\
963 cc1 %(cpp_unique_options) %(cc1_options)\
964 %{!fdump-ada-spec*:-o %g.s %{!o*:--output-pch=%i.gch}\
965 %W{o*:--output-pch=%*}}%V}}}}}}", 0, 0, 0},
966 {".i", "@cpp-output", 0, 0, 0},
967 {"@cpp-output",
968 "%{!M:%{!MM:%{!E:cc1 -fpreprocessed %i %(cc1_options) %{!fsyntax-only:%(invoke_as)}}}}", 0, 0, 0},
969 {".s", "@assembler", 0, 0, 0},
970 {"@assembler",
971 "%{!M:%{!MM:%{!E:%{!S:as %(asm_debug) %(asm_options) %i %A }}}}", 0, 0, 0},
972 {".sx", "@assembler-with-cpp", 0, 0, 0},
973 {".S", "@assembler-with-cpp", 0, 0, 0},
974 {"@assembler-with-cpp",
975 #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT
976 "%(trad_capable_cpp) -lang-asm %(cpp_options) -fno-directives-only\
977 %{E|M|MM:%(cpp_debug_options)}\
978 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\
979 as %(asm_debug) %(asm_options) %|.s %A }}}}"
980 #else
981 "%(trad_capable_cpp) -lang-asm %(cpp_options) -fno-directives-only\
982 %{E|M|MM:%(cpp_debug_options)}\
983 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\
984 as %(asm_debug) %(asm_options) %m.s %A }}}}"
985 #endif
986 , 0, 0, 0},
988 #include "specs.h"
989 /* Mark end of table. */
990 {0, 0, 0, 0, 0}
993 /* Number of elements in default_compilers, not counting the terminator. */
995 static const int n_default_compilers = ARRAY_SIZE (default_compilers) - 1;
997 typedef char *char_p; /* For DEF_VEC_P. */
998 DEF_VEC_P(char_p);
999 DEF_VEC_ALLOC_P(char_p,heap);
1001 /* A vector of options to give to the linker.
1002 These options are accumulated by %x,
1003 and substituted into the linker command with %X. */
1004 static VEC(char_p,heap) *linker_options;
1006 /* A vector of options to give to the assembler.
1007 These options are accumulated by -Wa,
1008 and substituted into the assembler command with %Y. */
1009 static VEC(char_p,heap) *assembler_options;
1011 /* A vector of options to give to the preprocessor.
1012 These options are accumulated by -Wp,
1013 and substituted into the preprocessor command with %Z. */
1014 static VEC(char_p,heap) *preprocessor_options;
1016 static char *
1017 skip_whitespace (char *p)
1019 while (1)
1021 /* A fully-blank line is a delimiter in the SPEC file and shouldn't
1022 be considered whitespace. */
1023 if (p[0] == '\n' && p[1] == '\n' && p[2] == '\n')
1024 return p + 1;
1025 else if (*p == '\n' || *p == ' ' || *p == '\t')
1026 p++;
1027 else if (*p == '#')
1029 while (*p != '\n')
1030 p++;
1031 p++;
1033 else
1034 break;
1037 return p;
1039 /* Structures to keep track of prefixes to try when looking for files. */
1041 struct prefix_list
1043 const char *prefix; /* String to prepend to the path. */
1044 struct prefix_list *next; /* Next in linked list. */
1045 int require_machine_suffix; /* Don't use without machine_suffix. */
1046 /* 2 means try both machine_suffix and just_machine_suffix. */
1047 int priority; /* Sort key - priority within list. */
1048 int os_multilib; /* 1 if OS multilib scheme should be used,
1049 0 for GCC multilib scheme. */
1052 struct path_prefix
1054 struct prefix_list *plist; /* List of prefixes to try */
1055 int max_len; /* Max length of a prefix in PLIST */
1056 const char *name; /* Name of this list (used in config stuff) */
1059 /* List of prefixes to try when looking for executables. */
1061 static struct path_prefix exec_prefixes = { 0, 0, "exec" };
1063 /* List of prefixes to try when looking for startup (crt0) files. */
1065 static struct path_prefix startfile_prefixes = { 0, 0, "startfile" };
1067 /* List of prefixes to try when looking for include files. */
1069 static struct path_prefix include_prefixes = { 0, 0, "include" };
1071 /* Suffix to attach to directories searched for commands.
1072 This looks like `MACHINE/VERSION/'. */
1074 static const char *machine_suffix = 0;
1076 /* Suffix to attach to directories searched for commands.
1077 This is just `MACHINE/'. */
1079 static const char *just_machine_suffix = 0;
1081 /* Adjusted value of GCC_EXEC_PREFIX envvar. */
1083 static const char *gcc_exec_prefix;
1085 /* Adjusted value of standard_libexec_prefix. */
1087 static const char *gcc_libexec_prefix;
1089 /* Default prefixes to attach to command names. */
1091 #ifndef STANDARD_STARTFILE_PREFIX_1
1092 #define STANDARD_STARTFILE_PREFIX_1 "/lib/"
1093 #endif
1094 #ifndef STANDARD_STARTFILE_PREFIX_2
1095 #define STANDARD_STARTFILE_PREFIX_2 "/usr/lib/"
1096 #endif
1098 #ifdef CROSS_DIRECTORY_STRUCTURE /* Don't use these prefixes for a cross compiler. */
1099 #undef MD_EXEC_PREFIX
1100 #undef MD_STARTFILE_PREFIX
1101 #undef MD_STARTFILE_PREFIX_1
1102 #endif
1104 /* If no prefixes defined, use the null string, which will disable them. */
1105 #ifndef MD_EXEC_PREFIX
1106 #define MD_EXEC_PREFIX ""
1107 #endif
1108 #ifndef MD_STARTFILE_PREFIX
1109 #define MD_STARTFILE_PREFIX ""
1110 #endif
1111 #ifndef MD_STARTFILE_PREFIX_1
1112 #define MD_STARTFILE_PREFIX_1 ""
1113 #endif
1115 /* These directories are locations set at configure-time based on the
1116 --prefix option provided to configure. Their initializers are
1117 defined in Makefile.in. These paths are not *directly* used when
1118 gcc_exec_prefix is set because, in that case, we know where the
1119 compiler has been installed, and use paths relative to that
1120 location instead. */
1121 static const char *const standard_exec_prefix = STANDARD_EXEC_PREFIX;
1122 static const char *const standard_libexec_prefix = STANDARD_LIBEXEC_PREFIX;
1123 static const char *const standard_bindir_prefix = STANDARD_BINDIR_PREFIX;
1124 static const char *const standard_startfile_prefix = STANDARD_STARTFILE_PREFIX;
1126 /* For native compilers, these are well-known paths containing
1127 components that may be provided by the system. For cross
1128 compilers, these paths are not used. */
1129 static const char *md_exec_prefix = MD_EXEC_PREFIX;
1130 static const char *md_startfile_prefix = MD_STARTFILE_PREFIX;
1131 static const char *md_startfile_prefix_1 = MD_STARTFILE_PREFIX_1;
1132 static const char *const standard_startfile_prefix_1
1133 = STANDARD_STARTFILE_PREFIX_1;
1134 static const char *const standard_startfile_prefix_2
1135 = STANDARD_STARTFILE_PREFIX_2;
1137 /* A relative path to be used in finding the location of tools
1138 relative to the driver. */
1139 static const char *const tooldir_base_prefix = TOOLDIR_BASE_PREFIX;
1141 /* Subdirectory to use for locating libraries. Set by
1142 set_multilib_dir based on the compilation options. */
1144 static const char *multilib_dir;
1146 /* Subdirectory to use for locating libraries in OS conventions. Set by
1147 set_multilib_dir based on the compilation options. */
1149 static const char *multilib_os_dir;
1151 /* Structure to keep track of the specs that have been defined so far.
1152 These are accessed using %(specname) in a compiler or link
1153 spec. */
1155 struct spec_list
1157 /* The following 2 fields must be first */
1158 /* to allow EXTRA_SPECS to be initialized */
1159 const char *name; /* name of the spec. */
1160 const char *ptr; /* available ptr if no static pointer */
1162 /* The following fields are not initialized */
1163 /* by EXTRA_SPECS */
1164 const char **ptr_spec; /* pointer to the spec itself. */
1165 struct spec_list *next; /* Next spec in linked list. */
1166 int name_len; /* length of the name */
1167 int alloc_p; /* whether string was allocated */
1170 #define INIT_STATIC_SPEC(NAME,PTR) \
1171 { NAME, NULL, PTR, (struct spec_list *) 0, sizeof (NAME) - 1, 0 }
1173 /* List of statically defined specs. */
1174 static struct spec_list static_specs[] =
1176 INIT_STATIC_SPEC ("asm", &asm_spec),
1177 INIT_STATIC_SPEC ("asm_debug", &asm_debug),
1178 INIT_STATIC_SPEC ("asm_final", &asm_final_spec),
1179 INIT_STATIC_SPEC ("asm_options", &asm_options),
1180 INIT_STATIC_SPEC ("invoke_as", &invoke_as),
1181 INIT_STATIC_SPEC ("cpp", &cpp_spec),
1182 INIT_STATIC_SPEC ("cpp_options", &cpp_options),
1183 INIT_STATIC_SPEC ("cpp_debug_options", &cpp_debug_options),
1184 INIT_STATIC_SPEC ("cpp_unique_options", &cpp_unique_options),
1185 INIT_STATIC_SPEC ("trad_capable_cpp", &trad_capable_cpp),
1186 INIT_STATIC_SPEC ("cc1", &cc1_spec),
1187 INIT_STATIC_SPEC ("cc1_options", &cc1_options),
1188 INIT_STATIC_SPEC ("cc1plus", &cc1plus_spec),
1189 INIT_STATIC_SPEC ("link_gcc_c_sequence", &link_gcc_c_sequence_spec),
1190 INIT_STATIC_SPEC ("link_ssp", &link_ssp_spec),
1191 INIT_STATIC_SPEC ("endfile", &endfile_spec),
1192 INIT_STATIC_SPEC ("link", &link_spec),
1193 INIT_STATIC_SPEC ("lib", &lib_spec),
1194 INIT_STATIC_SPEC ("mfwrap", &mfwrap_spec),
1195 INIT_STATIC_SPEC ("mflib", &mflib_spec),
1196 INIT_STATIC_SPEC ("link_gomp", &link_gomp_spec),
1197 INIT_STATIC_SPEC ("libgcc", &libgcc_spec),
1198 INIT_STATIC_SPEC ("startfile", &startfile_spec),
1199 INIT_STATIC_SPEC ("cross_compile", &cross_compile),
1200 INIT_STATIC_SPEC ("version", &compiler_version),
1201 INIT_STATIC_SPEC ("multilib", &multilib_select),
1202 INIT_STATIC_SPEC ("multilib_defaults", &multilib_defaults),
1203 INIT_STATIC_SPEC ("multilib_extra", &multilib_extra),
1204 INIT_STATIC_SPEC ("multilib_matches", &multilib_matches),
1205 INIT_STATIC_SPEC ("multilib_exclusions", &multilib_exclusions),
1206 INIT_STATIC_SPEC ("multilib_options", &multilib_options),
1207 INIT_STATIC_SPEC ("linker", &linker_name_spec),
1208 INIT_STATIC_SPEC ("linker_plugin_file", &linker_plugin_file_spec),
1209 INIT_STATIC_SPEC ("lto_wrapper", &lto_wrapper_spec),
1210 INIT_STATIC_SPEC ("lto_gcc", &lto_gcc_spec),
1211 INIT_STATIC_SPEC ("link_libgcc", &link_libgcc_spec),
1212 INIT_STATIC_SPEC ("md_exec_prefix", &md_exec_prefix),
1213 INIT_STATIC_SPEC ("md_startfile_prefix", &md_startfile_prefix),
1214 INIT_STATIC_SPEC ("md_startfile_prefix_1", &md_startfile_prefix_1),
1215 INIT_STATIC_SPEC ("startfile_prefix_spec", &startfile_prefix_spec),
1216 INIT_STATIC_SPEC ("sysroot_spec", &sysroot_spec),
1217 INIT_STATIC_SPEC ("sysroot_suffix_spec", &sysroot_suffix_spec),
1218 INIT_STATIC_SPEC ("sysroot_hdrs_suffix_spec", &sysroot_hdrs_suffix_spec),
1219 INIT_STATIC_SPEC ("self_spec", &self_spec),
1222 #ifdef EXTRA_SPECS /* additional specs needed */
1223 /* Structure to keep track of just the first two args of a spec_list.
1224 That is all that the EXTRA_SPECS macro gives us. */
1225 struct spec_list_1
1227 const char *const name;
1228 const char *const ptr;
1231 static const struct spec_list_1 extra_specs_1[] = { EXTRA_SPECS };
1232 static struct spec_list *extra_specs = (struct spec_list *) 0;
1233 #endif
1235 /* List of dynamically allocates specs that have been defined so far. */
1237 static struct spec_list *specs = (struct spec_list *) 0;
1239 /* List of static spec functions. */
1241 static const struct spec_function static_spec_functions[] =
1243 { "getenv", getenv_spec_function },
1244 { "if-exists", if_exists_spec_function },
1245 { "if-exists-else", if_exists_else_spec_function },
1246 { "replace-outfile", replace_outfile_spec_function },
1247 { "remove-outfile", remove_outfile_spec_function },
1248 { "version-compare", version_compare_spec_function },
1249 { "include", include_spec_function },
1250 { "find-file", find_file_spec_function },
1251 { "find-plugindir", find_plugindir_spec_function },
1252 { "print-asm-header", print_asm_header_spec_function },
1253 { "compare-debug-dump-opt", compare_debug_dump_opt_spec_function },
1254 { "compare-debug-self-opt", compare_debug_self_opt_spec_function },
1255 { "compare-debug-auxbase-opt", compare_debug_auxbase_opt_spec_function },
1256 { "pass-through-libs", pass_through_libs_spec_func },
1257 #ifdef EXTRA_SPEC_FUNCTIONS
1258 EXTRA_SPEC_FUNCTIONS
1259 #endif
1260 { 0, 0 }
1263 static int processing_spec_function;
1265 /* Add appropriate libgcc specs to OBSTACK, taking into account
1266 various permutations of -shared-libgcc, -shared, and such. */
1268 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
1270 #ifndef USE_LD_AS_NEEDED
1271 #define USE_LD_AS_NEEDED 0
1272 #endif
1274 static void
1275 init_gcc_specs (struct obstack *obstack, const char *shared_name,
1276 const char *static_name, const char *eh_name)
1278 char *buf;
1280 buf = concat ("%{static|static-libgcc:", static_name, " ", eh_name, "}"
1281 "%{!static:%{!static-libgcc:"
1282 #if USE_LD_AS_NEEDED
1283 "%{!shared-libgcc:",
1284 static_name, " --as-needed ", shared_name, " --no-as-needed"
1286 "%{shared-libgcc:",
1287 shared_name, "%{!shared: ", static_name, "}"
1289 #else
1290 "%{!shared:"
1291 "%{!shared-libgcc:", static_name, " ", eh_name, "}"
1292 "%{shared-libgcc:", shared_name, " ", static_name, "}"
1294 #ifdef LINK_EH_SPEC
1295 "%{shared:"
1296 "%{shared-libgcc:", shared_name, "}"
1297 "%{!shared-libgcc:", static_name, "}"
1299 #else
1300 "%{shared:", shared_name, "}"
1301 #endif
1302 #endif
1303 "}}", NULL);
1305 obstack_grow (obstack, buf, strlen (buf));
1306 free (buf);
1308 #endif /* ENABLE_SHARED_LIBGCC */
1310 /* Initialize the specs lookup routines. */
1312 static void
1313 init_spec (void)
1315 struct spec_list *next = (struct spec_list *) 0;
1316 struct spec_list *sl = (struct spec_list *) 0;
1317 int i;
1319 if (specs)
1320 return; /* Already initialized. */
1322 if (verbose_flag)
1323 fnotice (stderr, "Using built-in specs.\n");
1325 #ifdef EXTRA_SPECS
1326 extra_specs = XCNEWVEC (struct spec_list, ARRAY_SIZE (extra_specs_1));
1328 for (i = ARRAY_SIZE (extra_specs_1) - 1; i >= 0; i--)
1330 sl = &extra_specs[i];
1331 sl->name = extra_specs_1[i].name;
1332 sl->ptr = extra_specs_1[i].ptr;
1333 sl->next = next;
1334 sl->name_len = strlen (sl->name);
1335 sl->ptr_spec = &sl->ptr;
1336 next = sl;
1338 #endif
1340 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--)
1342 sl = &static_specs[i];
1343 sl->next = next;
1344 next = sl;
1347 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
1348 /* ??? If neither -shared-libgcc nor --static-libgcc was
1349 seen, then we should be making an educated guess. Some proposed
1350 heuristics for ELF include:
1352 (1) If "-Wl,--export-dynamic", then it's a fair bet that the
1353 program will be doing dynamic loading, which will likely
1354 need the shared libgcc.
1356 (2) If "-ldl", then it's also a fair bet that we're doing
1357 dynamic loading.
1359 (3) For each ET_DYN we're linking against (either through -lfoo
1360 or /some/path/foo.so), check to see whether it or one of
1361 its dependencies depends on a shared libgcc.
1363 (4) If "-shared"
1365 If the runtime is fixed to look for program headers instead
1366 of calling __register_frame_info at all, for each object,
1367 use the shared libgcc if any EH symbol referenced.
1369 If crtstuff is fixed to not invoke __register_frame_info
1370 automatically, for each object, use the shared libgcc if
1371 any non-empty unwind section found.
1373 Doing any of this probably requires invoking an external program to
1374 do the actual object file scanning. */
1376 const char *p = libgcc_spec;
1377 int in_sep = 1;
1379 /* Transform the extant libgcc_spec into one that uses the shared libgcc
1380 when given the proper command line arguments. */
1381 while (*p)
1383 if (in_sep && *p == '-' && strncmp (p, "-lgcc", 5) == 0)
1385 init_gcc_specs (&obstack,
1386 "-lgcc_s"
1387 #ifdef USE_LIBUNWIND_EXCEPTIONS
1388 " -lunwind"
1389 #endif
1391 "-lgcc",
1392 "-lgcc_eh"
1393 #ifdef USE_LIBUNWIND_EXCEPTIONS
1394 # ifdef HAVE_LD_STATIC_DYNAMIC
1395 " %{!static:" LD_STATIC_OPTION "} -lunwind"
1396 " %{!static:" LD_DYNAMIC_OPTION "}"
1397 # else
1398 " -lunwind"
1399 # endif
1400 #endif
1403 p += 5;
1404 in_sep = 0;
1406 else if (in_sep && *p == 'l' && strncmp (p, "libgcc.a%s", 10) == 0)
1408 /* Ug. We don't know shared library extensions. Hope that
1409 systems that use this form don't do shared libraries. */
1410 init_gcc_specs (&obstack,
1411 "-lgcc_s",
1412 "libgcc.a%s",
1413 "libgcc_eh.a%s"
1414 #ifdef USE_LIBUNWIND_EXCEPTIONS
1415 " -lunwind"
1416 #endif
1418 p += 10;
1419 in_sep = 0;
1421 else
1423 obstack_1grow (&obstack, *p);
1424 in_sep = (*p == ' ');
1425 p += 1;
1429 obstack_1grow (&obstack, '\0');
1430 libgcc_spec = XOBFINISH (&obstack, const char *);
1432 #endif
1433 #ifdef USE_AS_TRADITIONAL_FORMAT
1434 /* Prepend "--traditional-format" to whatever asm_spec we had before. */
1436 static const char tf[] = "--traditional-format ";
1437 obstack_grow (&obstack, tf, sizeof(tf) - 1);
1438 obstack_grow0 (&obstack, asm_spec, strlen (asm_spec));
1439 asm_spec = XOBFINISH (&obstack, const char *);
1441 #endif
1443 #if defined LINK_EH_SPEC || defined LINK_BUILDID_SPEC || \
1444 defined LINKER_HASH_STYLE
1445 # ifdef LINK_BUILDID_SPEC
1446 /* Prepend LINK_BUILDID_SPEC to whatever link_spec we had before. */
1447 obstack_grow (&obstack, LINK_BUILDID_SPEC, sizeof(LINK_BUILDID_SPEC) - 1);
1448 # endif
1449 # ifdef LINK_EH_SPEC
1450 /* Prepend LINK_EH_SPEC to whatever link_spec we had before. */
1451 obstack_grow (&obstack, LINK_EH_SPEC, sizeof(LINK_EH_SPEC) - 1);
1452 # endif
1453 # ifdef LINKER_HASH_STYLE
1454 /* Prepend --hash-style=LINKER_HASH_STYLE to whatever link_spec we had
1455 before. */
1457 static const char hash_style[] = "--hash-style=";
1458 obstack_grow (&obstack, hash_style, sizeof(hash_style) - 1);
1459 obstack_grow (&obstack, LINKER_HASH_STYLE, sizeof(LINKER_HASH_STYLE) - 1);
1460 obstack_1grow (&obstack, ' ');
1462 # endif
1463 obstack_grow0 (&obstack, link_spec, strlen (link_spec));
1464 link_spec = XOBFINISH (&obstack, const char *);
1465 #endif
1467 specs = sl;
1470 /* Change the value of spec NAME to SPEC. If SPEC is empty, then the spec is
1471 removed; If the spec starts with a + then SPEC is added to the end of the
1472 current spec. */
1474 static void
1475 set_spec (const char *name, const char *spec)
1477 struct spec_list *sl;
1478 const char *old_spec;
1479 int name_len = strlen (name);
1480 int i;
1482 /* If this is the first call, initialize the statically allocated specs. */
1483 if (!specs)
1485 struct spec_list *next = (struct spec_list *) 0;
1486 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--)
1488 sl = &static_specs[i];
1489 sl->next = next;
1490 next = sl;
1492 specs = sl;
1495 /* See if the spec already exists. */
1496 for (sl = specs; sl; sl = sl->next)
1497 if (name_len == sl->name_len && !strcmp (sl->name, name))
1498 break;
1500 if (!sl)
1502 /* Not found - make it. */
1503 sl = XNEW (struct spec_list);
1504 sl->name = xstrdup (name);
1505 sl->name_len = name_len;
1506 sl->ptr_spec = &sl->ptr;
1507 sl->alloc_p = 0;
1508 *(sl->ptr_spec) = "";
1509 sl->next = specs;
1510 specs = sl;
1513 old_spec = *(sl->ptr_spec);
1514 *(sl->ptr_spec) = ((spec[0] == '+' && ISSPACE ((unsigned char)spec[1]))
1515 ? concat (old_spec, spec + 1, NULL)
1516 : xstrdup (spec));
1518 #ifdef DEBUG_SPECS
1519 if (verbose_flag)
1520 fnotice (stderr, "Setting spec %s to '%s'\n\n", name, *(sl->ptr_spec));
1521 #endif
1523 /* Free the old spec. */
1524 if (old_spec && sl->alloc_p)
1525 free (CONST_CAST(char *, old_spec));
1527 sl->alloc_p = 1;
1530 /* Accumulate a command (program name and args), and run it. */
1532 typedef const char *const_char_p; /* For DEF_VEC_P. */
1533 DEF_VEC_P(const_char_p);
1534 DEF_VEC_ALLOC_P(const_char_p,heap);
1536 /* Vector of pointers to arguments in the current line of specifications. */
1538 static VEC(const_char_p,heap) *argbuf;
1540 /* Position in the argbuf vector containing the name of the output file
1541 (the value associated with the "-o" flag). */
1543 static int have_o_argbuf_index = 0;
1545 /* Were the options -c, -S or -E passed. */
1546 static int have_c = 0;
1548 /* Was the option -o passed. */
1549 static int have_o = 0;
1551 /* This is the list of suffixes and codes (%g/%u/%U/%j) and the associated
1552 temp file. If the HOST_BIT_BUCKET is used for %j, no entry is made for
1553 it here. */
1555 static struct temp_name {
1556 const char *suffix; /* suffix associated with the code. */
1557 int length; /* strlen (suffix). */
1558 int unique; /* Indicates whether %g or %u/%U was used. */
1559 const char *filename; /* associated filename. */
1560 int filename_length; /* strlen (filename). */
1561 struct temp_name *next;
1562 } *temp_names;
1564 /* Number of commands executed so far. */
1566 static int execution_count;
1568 /* Number of commands that exited with a signal. */
1570 static int signal_count;
1572 /* Allocate the argument vector. */
1574 static void
1575 alloc_args (void)
1577 argbuf = VEC_alloc (const_char_p, heap, 10);
1580 /* Clear out the vector of arguments (after a command is executed). */
1582 static void
1583 clear_args (void)
1585 VEC_truncate (const_char_p, argbuf, 0);
1588 /* Add one argument to the vector at the end.
1589 This is done when a space is seen or at the end of the line.
1590 If DELETE_ALWAYS is nonzero, the arg is a filename
1591 and the file should be deleted eventually.
1592 If DELETE_FAILURE is nonzero, the arg is a filename
1593 and the file should be deleted if this compilation fails. */
1595 static void
1596 store_arg (const char *arg, int delete_always, int delete_failure)
1598 VEC_safe_push (const_char_p, heap, argbuf, arg);
1600 if (strcmp (arg, "-o") == 0)
1601 have_o_argbuf_index = VEC_length (const_char_p, argbuf);
1602 if (delete_always || delete_failure)
1604 const char *p;
1605 /* If the temporary file we should delete is specified as
1606 part of a joined argument extract the filename. */
1607 if (arg[0] == '-'
1608 && (p = strrchr (arg, '=')))
1609 arg = p + 1;
1610 record_temp_file (arg, delete_always, delete_failure);
1614 /* Load specs from a file name named FILENAME, replacing occurrences of
1615 various different types of line-endings, \r\n, \n\r and just \r, with
1616 a single \n. */
1618 static char *
1619 load_specs (const char *filename)
1621 int desc;
1622 int readlen;
1623 struct stat statbuf;
1624 char *buffer;
1625 char *buffer_p;
1626 char *specs;
1627 char *specs_p;
1629 if (verbose_flag)
1630 fnotice (stderr, "Reading specs from %s\n", filename);
1632 /* Open and stat the file. */
1633 desc = open (filename, O_RDONLY, 0);
1634 if (desc < 0)
1635 pfatal_with_name (filename);
1636 if (stat (filename, &statbuf) < 0)
1637 pfatal_with_name (filename);
1639 /* Read contents of file into BUFFER. */
1640 buffer = XNEWVEC (char, statbuf.st_size + 1);
1641 readlen = read (desc, buffer, (unsigned) statbuf.st_size);
1642 if (readlen < 0)
1643 pfatal_with_name (filename);
1644 buffer[readlen] = 0;
1645 close (desc);
1647 specs = XNEWVEC (char, readlen + 1);
1648 specs_p = specs;
1649 for (buffer_p = buffer; buffer_p && *buffer_p; buffer_p++)
1651 int skip = 0;
1652 char c = *buffer_p;
1653 if (c == '\r')
1655 if (buffer_p > buffer && *(buffer_p - 1) == '\n') /* \n\r */
1656 skip = 1;
1657 else if (*(buffer_p + 1) == '\n') /* \r\n */
1658 skip = 1;
1659 else /* \r */
1660 c = '\n';
1662 if (! skip)
1663 *specs_p++ = c;
1665 *specs_p = '\0';
1667 free (buffer);
1668 return (specs);
1671 /* Read compilation specs from a file named FILENAME,
1672 replacing the default ones.
1674 A suffix which starts with `*' is a definition for
1675 one of the machine-specific sub-specs. The "suffix" should be
1676 *asm, *cc1, *cpp, *link, *startfile, etc.
1677 The corresponding spec is stored in asm_spec, etc.,
1678 rather than in the `compilers' vector.
1680 Anything invalid in the file is a fatal error. */
1682 static void
1683 read_specs (const char *filename, int main_p)
1685 char *buffer;
1686 char *p;
1688 buffer = load_specs (filename);
1690 /* Scan BUFFER for specs, putting them in the vector. */
1691 p = buffer;
1692 while (1)
1694 char *suffix;
1695 char *spec;
1696 char *in, *out, *p1, *p2, *p3;
1698 /* Advance P in BUFFER to the next nonblank nocomment line. */
1699 p = skip_whitespace (p);
1700 if (*p == 0)
1701 break;
1703 /* Is this a special command that starts with '%'? */
1704 /* Don't allow this for the main specs file, since it would
1705 encourage people to overwrite it. */
1706 if (*p == '%' && !main_p)
1708 p1 = p;
1709 while (*p && *p != '\n')
1710 p++;
1712 /* Skip '\n'. */
1713 p++;
1715 if (!strncmp (p1, "%include", sizeof ("%include") - 1)
1716 && (p1[sizeof "%include" - 1] == ' '
1717 || p1[sizeof "%include" - 1] == '\t'))
1719 char *new_filename;
1721 p1 += sizeof ("%include");
1722 while (*p1 == ' ' || *p1 == '\t')
1723 p1++;
1725 if (*p1++ != '<' || p[-2] != '>')
1726 fatal_error ("specs %%include syntax malformed after "
1727 "%ld characters",
1728 (long) (p1 - buffer + 1));
1730 p[-2] = '\0';
1731 new_filename = find_a_file (&startfile_prefixes, p1, R_OK, true);
1732 read_specs (new_filename ? new_filename : p1, FALSE);
1733 continue;
1735 else if (!strncmp (p1, "%include_noerr", sizeof "%include_noerr" - 1)
1736 && (p1[sizeof "%include_noerr" - 1] == ' '
1737 || p1[sizeof "%include_noerr" - 1] == '\t'))
1739 char *new_filename;
1741 p1 += sizeof "%include_noerr";
1742 while (*p1 == ' ' || *p1 == '\t')
1743 p1++;
1745 if (*p1++ != '<' || p[-2] != '>')
1746 fatal_error ("specs %%include syntax malformed after "
1747 "%ld characters",
1748 (long) (p1 - buffer + 1));
1750 p[-2] = '\0';
1751 new_filename = find_a_file (&startfile_prefixes, p1, R_OK, true);
1752 if (new_filename)
1753 read_specs (new_filename, FALSE);
1754 else if (verbose_flag)
1755 fnotice (stderr, "could not find specs file %s\n", p1);
1756 continue;
1758 else if (!strncmp (p1, "%rename", sizeof "%rename" - 1)
1759 && (p1[sizeof "%rename" - 1] == ' '
1760 || p1[sizeof "%rename" - 1] == '\t'))
1762 int name_len;
1763 struct spec_list *sl;
1764 struct spec_list *newsl;
1766 /* Get original name. */
1767 p1 += sizeof "%rename";
1768 while (*p1 == ' ' || *p1 == '\t')
1769 p1++;
1771 if (! ISALPHA ((unsigned char) *p1))
1772 fatal_error ("specs %%rename syntax malformed after "
1773 "%ld characters",
1774 (long) (p1 - buffer));
1776 p2 = p1;
1777 while (*p2 && !ISSPACE ((unsigned char) *p2))
1778 p2++;
1780 if (*p2 != ' ' && *p2 != '\t')
1781 fatal_error ("specs %%rename syntax malformed after "
1782 "%ld characters",
1783 (long) (p2 - buffer));
1785 name_len = p2 - p1;
1786 *p2++ = '\0';
1787 while (*p2 == ' ' || *p2 == '\t')
1788 p2++;
1790 if (! ISALPHA ((unsigned char) *p2))
1791 fatal_error ("specs %%rename syntax malformed after "
1792 "%ld characters",
1793 (long) (p2 - buffer));
1795 /* Get new spec name. */
1796 p3 = p2;
1797 while (*p3 && !ISSPACE ((unsigned char) *p3))
1798 p3++;
1800 if (p3 != p - 1)
1801 fatal_error ("specs %%rename syntax malformed after "
1802 "%ld characters",
1803 (long) (p3 - buffer));
1804 *p3 = '\0';
1806 for (sl = specs; sl; sl = sl->next)
1807 if (name_len == sl->name_len && !strcmp (sl->name, p1))
1808 break;
1810 if (!sl)
1811 fatal_error ("specs %s spec was not found to be renamed", p1);
1813 if (strcmp (p1, p2) == 0)
1814 continue;
1816 for (newsl = specs; newsl; newsl = newsl->next)
1817 if (strcmp (newsl->name, p2) == 0)
1818 fatal_error ("%s: attempt to rename spec %qs to "
1819 "already defined spec %qs",
1820 filename, p1, p2);
1822 if (verbose_flag)
1824 fnotice (stderr, "rename spec %s to %s\n", p1, p2);
1825 #ifdef DEBUG_SPECS
1826 fnotice (stderr, "spec is '%s'\n\n", *(sl->ptr_spec));
1827 #endif
1830 set_spec (p2, *(sl->ptr_spec));
1831 if (sl->alloc_p)
1832 free (CONST_CAST (char *, *(sl->ptr_spec)));
1834 *(sl->ptr_spec) = "";
1835 sl->alloc_p = 0;
1836 continue;
1838 else
1839 fatal_error ("specs unknown %% command after %ld characters",
1840 (long) (p1 - buffer));
1843 /* Find the colon that should end the suffix. */
1844 p1 = p;
1845 while (*p1 && *p1 != ':' && *p1 != '\n')
1846 p1++;
1848 /* The colon shouldn't be missing. */
1849 if (*p1 != ':')
1850 fatal_error ("specs file malformed after %ld characters",
1851 (long) (p1 - buffer));
1853 /* Skip back over trailing whitespace. */
1854 p2 = p1;
1855 while (p2 > buffer && (p2[-1] == ' ' || p2[-1] == '\t'))
1856 p2--;
1858 /* Copy the suffix to a string. */
1859 suffix = save_string (p, p2 - p);
1860 /* Find the next line. */
1861 p = skip_whitespace (p1 + 1);
1862 if (p[1] == 0)
1863 fatal_error ("specs file malformed after %ld characters",
1864 (long) (p - buffer));
1866 p1 = p;
1867 /* Find next blank line or end of string. */
1868 while (*p1 && !(*p1 == '\n' && (p1[1] == '\n' || p1[1] == '\0')))
1869 p1++;
1871 /* Specs end at the blank line and do not include the newline. */
1872 spec = save_string (p, p1 - p);
1873 p = p1;
1875 /* Delete backslash-newline sequences from the spec. */
1876 in = spec;
1877 out = spec;
1878 while (*in != 0)
1880 if (in[0] == '\\' && in[1] == '\n')
1881 in += 2;
1882 else if (in[0] == '#')
1883 while (*in && *in != '\n')
1884 in++;
1886 else
1887 *out++ = *in++;
1889 *out = 0;
1891 if (suffix[0] == '*')
1893 if (! strcmp (suffix, "*link_command"))
1894 link_command_spec = spec;
1895 else
1896 set_spec (suffix + 1, spec);
1898 else
1900 /* Add this pair to the vector. */
1901 compilers
1902 = XRESIZEVEC (struct compiler, compilers, n_compilers + 2);
1904 compilers[n_compilers].suffix = suffix;
1905 compilers[n_compilers].spec = spec;
1906 n_compilers++;
1907 memset (&compilers[n_compilers], 0, sizeof compilers[n_compilers]);
1910 if (*suffix == 0)
1911 link_command_spec = spec;
1914 if (link_command_spec == 0)
1915 fatal_error ("spec file has no spec for linking");
1918 /* Record the names of temporary files we tell compilers to write,
1919 and delete them at the end of the run. */
1921 /* This is the common prefix we use to make temp file names.
1922 It is chosen once for each run of this program.
1923 It is substituted into a spec by %g or %j.
1924 Thus, all temp file names contain this prefix.
1925 In practice, all temp file names start with this prefix.
1927 This prefix comes from the envvar TMPDIR if it is defined;
1928 otherwise, from the P_tmpdir macro if that is defined;
1929 otherwise, in /usr/tmp or /tmp;
1930 or finally the current directory if all else fails. */
1932 static const char *temp_filename;
1934 /* Length of the prefix. */
1936 static int temp_filename_length;
1938 /* Define the list of temporary files to delete. */
1940 struct temp_file
1942 const char *name;
1943 struct temp_file *next;
1946 /* Queue of files to delete on success or failure of compilation. */
1947 static struct temp_file *always_delete_queue;
1948 /* Queue of files to delete on failure of compilation. */
1949 static struct temp_file *failure_delete_queue;
1951 /* Record FILENAME as a file to be deleted automatically.
1952 ALWAYS_DELETE nonzero means delete it if all compilation succeeds;
1953 otherwise delete it in any case.
1954 FAIL_DELETE nonzero means delete it if a compilation step fails;
1955 otherwise delete it in any case. */
1957 void
1958 record_temp_file (const char *filename, int always_delete, int fail_delete)
1960 char *const name = xstrdup (filename);
1962 if (always_delete)
1964 struct temp_file *temp;
1965 for (temp = always_delete_queue; temp; temp = temp->next)
1966 if (! filename_cmp (name, temp->name))
1967 goto already1;
1969 temp = XNEW (struct temp_file);
1970 temp->next = always_delete_queue;
1971 temp->name = name;
1972 always_delete_queue = temp;
1974 already1:;
1977 if (fail_delete)
1979 struct temp_file *temp;
1980 for (temp = failure_delete_queue; temp; temp = temp->next)
1981 if (! filename_cmp (name, temp->name))
1982 goto already2;
1984 temp = XNEW (struct temp_file);
1985 temp->next = failure_delete_queue;
1986 temp->name = name;
1987 failure_delete_queue = temp;
1989 already2:;
1993 /* Delete all the temporary files whose names we previously recorded. */
1995 #ifndef DELETE_IF_ORDINARY
1996 #define DELETE_IF_ORDINARY(NAME,ST,VERBOSE_FLAG) \
1997 do \
1999 if (stat (NAME, &ST) >= 0 && S_ISREG (ST.st_mode)) \
2000 if (unlink (NAME) < 0) \
2001 if (VERBOSE_FLAG) \
2002 perror_with_name (NAME); \
2003 } while (0)
2004 #endif
2006 static void
2007 delete_if_ordinary (const char *name)
2009 struct stat st;
2010 #ifdef DEBUG
2011 int i, c;
2013 printf ("Delete %s? (y or n) ", name);
2014 fflush (stdout);
2015 i = getchar ();
2016 if (i != '\n')
2017 while ((c = getchar ()) != '\n' && c != EOF)
2020 if (i == 'y' || i == 'Y')
2021 #endif /* DEBUG */
2022 DELETE_IF_ORDINARY (name, st, verbose_flag);
2025 static void
2026 delete_temp_files (void)
2028 struct temp_file *temp;
2030 for (temp = always_delete_queue; temp; temp = temp->next)
2031 delete_if_ordinary (temp->name);
2032 always_delete_queue = 0;
2035 /* Delete all the files to be deleted on error. */
2037 static void
2038 delete_failure_queue (void)
2040 struct temp_file *temp;
2042 for (temp = failure_delete_queue; temp; temp = temp->next)
2043 delete_if_ordinary (temp->name);
2046 static void
2047 clear_failure_queue (void)
2049 failure_delete_queue = 0;
2052 /* Call CALLBACK for each path in PATHS, breaking out early if CALLBACK
2053 returns non-NULL.
2054 If DO_MULTI is true iterate over the paths twice, first with multilib
2055 suffix then without, otherwise iterate over the paths once without
2056 adding a multilib suffix. When DO_MULTI is true, some attempt is made
2057 to avoid visiting the same path twice, but we could do better. For
2058 instance, /usr/lib/../lib is considered different from /usr/lib.
2059 At least EXTRA_SPACE chars past the end of the path passed to
2060 CALLBACK are available for use by the callback.
2061 CALLBACK_INFO allows extra parameters to be passed to CALLBACK.
2063 Returns the value returned by CALLBACK. */
2065 static void *
2066 for_each_path (const struct path_prefix *paths,
2067 bool do_multi,
2068 size_t extra_space,
2069 void *(*callback) (char *, void *),
2070 void *callback_info)
2072 struct prefix_list *pl;
2073 const char *multi_dir = NULL;
2074 const char *multi_os_dir = NULL;
2075 const char *multi_suffix;
2076 const char *just_multi_suffix;
2077 char *path = NULL;
2078 void *ret = NULL;
2079 bool skip_multi_dir = false;
2080 bool skip_multi_os_dir = false;
2082 multi_suffix = machine_suffix;
2083 just_multi_suffix = just_machine_suffix;
2084 if (do_multi && multilib_dir && strcmp (multilib_dir, ".") != 0)
2086 multi_dir = concat (multilib_dir, dir_separator_str, NULL);
2087 multi_suffix = concat (multi_suffix, multi_dir, NULL);
2088 just_multi_suffix = concat (just_multi_suffix, multi_dir, NULL);
2090 if (do_multi && multilib_os_dir && strcmp (multilib_os_dir, ".") != 0)
2091 multi_os_dir = concat (multilib_os_dir, dir_separator_str, NULL);
2093 while (1)
2095 size_t multi_dir_len = 0;
2096 size_t multi_os_dir_len = 0;
2097 size_t suffix_len;
2098 size_t just_suffix_len;
2099 size_t len;
2101 if (multi_dir)
2102 multi_dir_len = strlen (multi_dir);
2103 if (multi_os_dir)
2104 multi_os_dir_len = strlen (multi_os_dir);
2105 suffix_len = strlen (multi_suffix);
2106 just_suffix_len = strlen (just_multi_suffix);
2108 if (path == NULL)
2110 len = paths->max_len + extra_space + 1;
2111 if (suffix_len > multi_os_dir_len)
2112 len += suffix_len;
2113 else
2114 len += multi_os_dir_len;
2115 path = XNEWVEC (char, len);
2118 for (pl = paths->plist; pl != 0; pl = pl->next)
2120 len = strlen (pl->prefix);
2121 memcpy (path, pl->prefix, len);
2123 /* Look first in MACHINE/VERSION subdirectory. */
2124 if (!skip_multi_dir)
2126 memcpy (path + len, multi_suffix, suffix_len + 1);
2127 ret = callback (path, callback_info);
2128 if (ret)
2129 break;
2132 /* Some paths are tried with just the machine (ie. target)
2133 subdir. This is used for finding as, ld, etc. */
2134 if (!skip_multi_dir
2135 && pl->require_machine_suffix == 2)
2137 memcpy (path + len, just_multi_suffix, just_suffix_len + 1);
2138 ret = callback (path, callback_info);
2139 if (ret)
2140 break;
2143 /* Now try the base path. */
2144 if (!pl->require_machine_suffix
2145 && !(pl->os_multilib ? skip_multi_os_dir : skip_multi_dir))
2147 const char *this_multi;
2148 size_t this_multi_len;
2150 if (pl->os_multilib)
2152 this_multi = multi_os_dir;
2153 this_multi_len = multi_os_dir_len;
2155 else
2157 this_multi = multi_dir;
2158 this_multi_len = multi_dir_len;
2161 if (this_multi_len)
2162 memcpy (path + len, this_multi, this_multi_len + 1);
2163 else
2164 path[len] = '\0';
2166 ret = callback (path, callback_info);
2167 if (ret)
2168 break;
2171 if (pl)
2172 break;
2174 if (multi_dir == NULL && multi_os_dir == NULL)
2175 break;
2177 /* Run through the paths again, this time without multilibs.
2178 Don't repeat any we have already seen. */
2179 if (multi_dir)
2181 free (CONST_CAST (char *, multi_dir));
2182 multi_dir = NULL;
2183 free (CONST_CAST (char *, multi_suffix));
2184 multi_suffix = machine_suffix;
2185 free (CONST_CAST (char *, just_multi_suffix));
2186 just_multi_suffix = just_machine_suffix;
2188 else
2189 skip_multi_dir = true;
2190 if (multi_os_dir)
2192 free (CONST_CAST (char *, multi_os_dir));
2193 multi_os_dir = NULL;
2195 else
2196 skip_multi_os_dir = true;
2199 if (multi_dir)
2201 free (CONST_CAST (char *, multi_dir));
2202 free (CONST_CAST (char *, multi_suffix));
2203 free (CONST_CAST (char *, just_multi_suffix));
2205 if (multi_os_dir)
2206 free (CONST_CAST (char *, multi_os_dir));
2207 if (ret != path)
2208 free (path);
2209 return ret;
2212 /* Callback for build_search_list. Adds path to obstack being built. */
2214 struct add_to_obstack_info {
2215 struct obstack *ob;
2216 bool check_dir;
2217 bool first_time;
2220 static void *
2221 add_to_obstack (char *path, void *data)
2223 struct add_to_obstack_info *info = (struct add_to_obstack_info *) data;
2225 if (info->check_dir && !is_directory (path, false))
2226 return NULL;
2228 if (!info->first_time)
2229 obstack_1grow (info->ob, PATH_SEPARATOR);
2231 obstack_grow (info->ob, path, strlen (path));
2233 info->first_time = false;
2234 return NULL;
2237 /* Add or change the value of an environment variable, outputting the
2238 change to standard error if in verbose mode. */
2239 static void
2240 xputenv (const char *string)
2242 if (verbose_flag)
2243 fnotice (stderr, "%s\n", string);
2244 putenv (CONST_CAST (char *, string));
2247 /* Build a list of search directories from PATHS.
2248 PREFIX is a string to prepend to the list.
2249 If CHECK_DIR_P is true we ensure the directory exists.
2250 If DO_MULTI is true, multilib paths are output first, then
2251 non-multilib paths.
2252 This is used mostly by putenv_from_prefixes so we use `collect_obstack'.
2253 It is also used by the --print-search-dirs flag. */
2255 static char *
2256 build_search_list (const struct path_prefix *paths, const char *prefix,
2257 bool check_dir, bool do_multi)
2259 struct add_to_obstack_info info;
2261 info.ob = &collect_obstack;
2262 info.check_dir = check_dir;
2263 info.first_time = true;
2265 obstack_grow (&collect_obstack, prefix, strlen (prefix));
2266 obstack_1grow (&collect_obstack, '=');
2268 for_each_path (paths, do_multi, 0, add_to_obstack, &info);
2270 obstack_1grow (&collect_obstack, '\0');
2271 return XOBFINISH (&collect_obstack, char *);
2274 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
2275 for collect. */
2277 static void
2278 putenv_from_prefixes (const struct path_prefix *paths, const char *env_var,
2279 bool do_multi)
2281 xputenv (build_search_list (paths, env_var, true, do_multi));
2284 /* Check whether NAME can be accessed in MODE. This is like access,
2285 except that it never considers directories to be executable. */
2287 static int
2288 access_check (const char *name, int mode)
2290 if (mode == X_OK)
2292 struct stat st;
2294 if (stat (name, &st) < 0
2295 || S_ISDIR (st.st_mode))
2296 return -1;
2299 return access (name, mode);
2302 /* Callback for find_a_file. Appends the file name to the directory
2303 path. If the resulting file exists in the right mode, return the
2304 full pathname to the file. */
2306 struct file_at_path_info {
2307 const char *name;
2308 const char *suffix;
2309 int name_len;
2310 int suffix_len;
2311 int mode;
2314 static void *
2315 file_at_path (char *path, void *data)
2317 struct file_at_path_info *info = (struct file_at_path_info *) data;
2318 size_t len = strlen (path);
2320 memcpy (path + len, info->name, info->name_len);
2321 len += info->name_len;
2323 /* Some systems have a suffix for executable files.
2324 So try appending that first. */
2325 if (info->suffix_len)
2327 memcpy (path + len, info->suffix, info->suffix_len + 1);
2328 if (access_check (path, info->mode) == 0)
2329 return path;
2332 path[len] = '\0';
2333 if (access_check (path, info->mode) == 0)
2334 return path;
2336 return NULL;
2339 /* Search for NAME using the prefix list PREFIXES. MODE is passed to
2340 access to check permissions. If DO_MULTI is true, search multilib
2341 paths then non-multilib paths, otherwise do not search multilib paths.
2342 Return 0 if not found, otherwise return its name, allocated with malloc. */
2344 static char *
2345 find_a_file (const struct path_prefix *pprefix, const char *name, int mode,
2346 bool do_multi)
2348 struct file_at_path_info info;
2350 #ifdef DEFAULT_ASSEMBLER
2351 if (! strcmp (name, "as") && access (DEFAULT_ASSEMBLER, mode) == 0)
2352 return xstrdup (DEFAULT_ASSEMBLER);
2353 #endif
2355 #ifdef DEFAULT_LINKER
2356 if (! strcmp(name, "ld") && access (DEFAULT_LINKER, mode) == 0)
2357 return xstrdup (DEFAULT_LINKER);
2358 #endif
2360 /* Determine the filename to execute (special case for absolute paths). */
2362 if (IS_ABSOLUTE_PATH (name))
2364 if (access (name, mode) == 0)
2365 return xstrdup (name);
2367 return NULL;
2370 info.name = name;
2371 info.suffix = (mode & X_OK) != 0 ? HOST_EXECUTABLE_SUFFIX : "";
2372 info.name_len = strlen (info.name);
2373 info.suffix_len = strlen (info.suffix);
2374 info.mode = mode;
2376 return (char*) for_each_path (pprefix, do_multi,
2377 info.name_len + info.suffix_len,
2378 file_at_path, &info);
2381 /* Ranking of prefixes in the sort list. -B prefixes are put before
2382 all others. */
2384 enum path_prefix_priority
2386 PREFIX_PRIORITY_B_OPT,
2387 PREFIX_PRIORITY_LAST
2390 /* Add an entry for PREFIX in PLIST. The PLIST is kept in ascending
2391 order according to PRIORITY. Within each PRIORITY, new entries are
2392 appended.
2394 If WARN is nonzero, we will warn if no file is found
2395 through this prefix. WARN should point to an int
2396 which will be set to 1 if this entry is used.
2398 COMPONENT is the value to be passed to update_path.
2400 REQUIRE_MACHINE_SUFFIX is 1 if this prefix can't be used without
2401 the complete value of machine_suffix.
2402 2 means try both machine_suffix and just_machine_suffix. */
2404 static void
2405 add_prefix (struct path_prefix *pprefix, const char *prefix,
2406 const char *component, /* enum prefix_priority */ int priority,
2407 int require_machine_suffix, int os_multilib)
2409 struct prefix_list *pl, **prev;
2410 int len;
2412 for (prev = &pprefix->plist;
2413 (*prev) != NULL && (*prev)->priority <= priority;
2414 prev = &(*prev)->next)
2417 /* Keep track of the longest prefix. */
2419 prefix = update_path (prefix, component);
2420 len = strlen (prefix);
2421 if (len > pprefix->max_len)
2422 pprefix->max_len = len;
2424 pl = XNEW (struct prefix_list);
2425 pl->prefix = prefix;
2426 pl->require_machine_suffix = require_machine_suffix;
2427 pl->priority = priority;
2428 pl->os_multilib = os_multilib;
2430 /* Insert after PREV. */
2431 pl->next = (*prev);
2432 (*prev) = pl;
2435 /* Same as add_prefix, but prepending target_system_root to prefix. */
2436 /* The target_system_root prefix has been relocated by gcc_exec_prefix. */
2437 static void
2438 add_sysrooted_prefix (struct path_prefix *pprefix, const char *prefix,
2439 const char *component,
2440 /* enum prefix_priority */ int priority,
2441 int require_machine_suffix, int os_multilib)
2443 if (!IS_ABSOLUTE_PATH (prefix))
2444 fatal_error ("system path %qs is not absolute", prefix);
2446 if (target_system_root)
2448 if (target_sysroot_suffix)
2449 prefix = concat (target_sysroot_suffix, prefix, NULL);
2450 prefix = concat (target_system_root, prefix, NULL);
2452 /* We have to override this because GCC's notion of sysroot
2453 moves along with GCC. */
2454 component = "GCC";
2457 add_prefix (pprefix, prefix, component, priority,
2458 require_machine_suffix, os_multilib);
2461 /* Execute the command specified by the arguments on the current line of spec.
2462 When using pipes, this includes several piped-together commands
2463 with `|' between them.
2465 Return 0 if successful, -1 if failed. */
2467 static int
2468 execute (void)
2470 int i;
2471 int n_commands; /* # of command. */
2472 char *string;
2473 struct pex_obj *pex;
2474 struct command
2476 const char *prog; /* program name. */
2477 const char **argv; /* vector of args. */
2479 const char *arg;
2481 struct command *commands; /* each command buffer with above info. */
2483 gcc_assert (!processing_spec_function);
2485 if (wrapper_string)
2487 string = find_a_file (&exec_prefixes,
2488 VEC_index (const_char_p, argbuf, 0), X_OK, false);
2489 if (string)
2490 VEC_replace (const_char_p, argbuf, 0, string);
2491 insert_wrapper (wrapper_string);
2494 /* Count # of piped commands. */
2495 for (n_commands = 1, i = 0; VEC_iterate (const_char_p, argbuf, i, arg); i++)
2496 if (strcmp (arg, "|") == 0)
2497 n_commands++;
2499 /* Get storage for each command. */
2500 commands = (struct command *) alloca (n_commands * sizeof (struct command));
2502 /* Split argbuf into its separate piped processes,
2503 and record info about each one.
2504 Also search for the programs that are to be run. */
2506 VEC_safe_push (const_char_p, heap, argbuf, 0);
2508 commands[0].prog = VEC_index (const_char_p, argbuf, 0); /* first command. */
2509 commands[0].argv = VEC_address (const_char_p, argbuf);
2511 if (!wrapper_string)
2513 string = find_a_file (&exec_prefixes, commands[0].prog, X_OK, false);
2514 commands[0].argv[0] = (string) ? string : commands[0].argv[0];
2517 for (n_commands = 1, i = 0; VEC_iterate (const_char_p, argbuf, i, arg); i++)
2518 if (arg && strcmp (arg, "|") == 0)
2519 { /* each command. */
2520 #if defined (__MSDOS__) || defined (OS2) || defined (VMS)
2521 fatal_error ("-pipe not supported");
2522 #endif
2523 VEC_replace (const_char_p, argbuf, i, 0); /* Termination of
2524 command args. */
2525 commands[n_commands].prog = VEC_index (const_char_p, argbuf, i + 1);
2526 commands[n_commands].argv
2527 = &(VEC_address (const_char_p, argbuf))[i + 1];
2528 string = find_a_file (&exec_prefixes, commands[n_commands].prog,
2529 X_OK, false);
2530 if (string)
2531 commands[n_commands].argv[0] = string;
2532 n_commands++;
2535 /* If -v, print what we are about to do, and maybe query. */
2537 if (verbose_flag)
2539 /* For help listings, put a blank line between sub-processes. */
2540 if (print_help_list)
2541 fputc ('\n', stderr);
2543 /* Print each piped command as a separate line. */
2544 for (i = 0; i < n_commands; i++)
2546 const char *const *j;
2548 if (verbose_only_flag)
2550 for (j = commands[i].argv; *j; j++)
2552 const char *p;
2553 for (p = *j; *p; ++p)
2554 if (!ISALNUM ((unsigned char) *p)
2555 && *p != '_' && *p != '/' && *p != '-' && *p != '.')
2556 break;
2557 if (*p || !*j)
2559 fprintf (stderr, " \"");
2560 for (p = *j; *p; ++p)
2562 if (*p == '"' || *p == '\\' || *p == '$')
2563 fputc ('\\', stderr);
2564 fputc (*p, stderr);
2566 fputc ('"', stderr);
2568 /* If it's empty, print "". */
2569 else if (!**j)
2570 fprintf (stderr, " \"\"");
2571 else
2572 fprintf (stderr, " %s", *j);
2575 else
2576 for (j = commands[i].argv; *j; j++)
2577 /* If it's empty, print "". */
2578 if (!**j)
2579 fprintf (stderr, " \"\"");
2580 else
2581 fprintf (stderr, " %s", *j);
2583 /* Print a pipe symbol after all but the last command. */
2584 if (i + 1 != n_commands)
2585 fprintf (stderr, " |");
2586 fprintf (stderr, "\n");
2588 fflush (stderr);
2589 if (verbose_only_flag != 0)
2591 /* verbose_only_flag should act as if the spec was
2592 executed, so increment execution_count before
2593 returning. This prevents spurious warnings about
2594 unused linker input files, etc. */
2595 execution_count++;
2596 return 0;
2598 #ifdef DEBUG
2599 fnotice (stderr, "\nGo ahead? (y or n) ");
2600 fflush (stderr);
2601 i = getchar ();
2602 if (i != '\n')
2603 while (getchar () != '\n')
2606 if (i != 'y' && i != 'Y')
2607 return 0;
2608 #endif /* DEBUG */
2611 #ifdef ENABLE_VALGRIND_CHECKING
2612 /* Run the each command through valgrind. To simplify prepending the
2613 path to valgrind and the option "-q" (for quiet operation unless
2614 something triggers), we allocate a separate argv array. */
2616 for (i = 0; i < n_commands; i++)
2618 const char **argv;
2619 int argc;
2620 int j;
2622 for (argc = 0; commands[i].argv[argc] != NULL; argc++)
2625 argv = XALLOCAVEC (const char *, argc + 3);
2627 argv[0] = VALGRIND_PATH;
2628 argv[1] = "-q";
2629 for (j = 2; j < argc + 2; j++)
2630 argv[j] = commands[i].argv[j - 2];
2631 argv[j] = NULL;
2633 commands[i].argv = argv;
2634 commands[i].prog = argv[0];
2636 #endif
2638 /* Run each piped subprocess. */
2640 pex = pex_init (PEX_USE_PIPES | ((report_times || report_times_to_file)
2641 ? PEX_RECORD_TIMES : 0),
2642 progname, temp_filename);
2643 if (pex == NULL)
2644 fatal_error ("pex_init failed: %m");
2646 for (i = 0; i < n_commands; i++)
2648 const char *errmsg;
2649 int err;
2650 const char *string = commands[i].argv[0];
2652 errmsg = pex_run (pex,
2653 ((i + 1 == n_commands ? PEX_LAST : 0)
2654 | (string == commands[i].prog ? PEX_SEARCH : 0)),
2655 string, CONST_CAST (char **, commands[i].argv),
2656 NULL, NULL, &err);
2657 if (errmsg != NULL)
2659 if (err == 0)
2660 fatal_error (errmsg);
2661 else
2663 errno = err;
2664 pfatal_with_name (errmsg);
2668 if (string != commands[i].prog)
2669 free (CONST_CAST (char *, string));
2672 execution_count++;
2674 /* Wait for all the subprocesses to finish. */
2677 int *statuses;
2678 struct pex_time *times = NULL;
2679 int ret_code = 0;
2681 statuses = (int *) alloca (n_commands * sizeof (int));
2682 if (!pex_get_status (pex, n_commands, statuses))
2683 fatal_error ("failed to get exit status: %m");
2685 if (report_times || report_times_to_file)
2687 times = (struct pex_time *) alloca (n_commands * sizeof (struct pex_time));
2688 if (!pex_get_times (pex, n_commands, times))
2689 fatal_error ("failed to get process times: %m");
2692 pex_free (pex);
2694 for (i = 0; i < n_commands; ++i)
2696 int status = statuses[i];
2698 if (WIFSIGNALED (status))
2700 #ifdef SIGPIPE
2701 /* SIGPIPE is a special case. It happens in -pipe mode
2702 when the compiler dies before the preprocessor is done,
2703 or the assembler dies before the compiler is done.
2704 There's generally been an error already, and this is
2705 just fallout. So don't generate another error unless
2706 we would otherwise have succeeded. */
2707 if (WTERMSIG (status) == SIGPIPE
2708 && (signal_count || greatest_status >= MIN_FATAL_STATUS))
2710 signal_count++;
2711 ret_code = -1;
2713 else
2714 #endif
2715 internal_error ("%s (program %s)",
2716 strsignal (WTERMSIG (status)), commands[i].prog);
2718 else if (WIFEXITED (status)
2719 && WEXITSTATUS (status) >= MIN_FATAL_STATUS)
2721 if (WEXITSTATUS (status) > greatest_status)
2722 greatest_status = WEXITSTATUS (status);
2723 ret_code = -1;
2726 if (report_times || report_times_to_file)
2728 struct pex_time *pt = &times[i];
2729 double ut, st;
2731 ut = ((double) pt->user_seconds
2732 + (double) pt->user_microseconds / 1.0e6);
2733 st = ((double) pt->system_seconds
2734 + (double) pt->system_microseconds / 1.0e6);
2736 if (ut + st != 0)
2738 if (report_times)
2739 fnotice (stderr, "# %s %.2f %.2f\n",
2740 commands[i].prog, ut, st);
2742 if (report_times_to_file)
2744 int c = 0;
2745 const char *const *j;
2747 fprintf (report_times_to_file, "%g %g", ut, st);
2749 for (j = &commands[i].prog; *j; j = &commands[i].argv[++c])
2751 const char *p;
2752 for (p = *j; *p; ++p)
2753 if (*p == '"' || *p == '\\' || *p == '$'
2754 || ISSPACE (*p))
2755 break;
2757 if (*p)
2759 fprintf (report_times_to_file, " \"");
2760 for (p = *j; *p; ++p)
2762 if (*p == '"' || *p == '\\' || *p == '$')
2763 fputc ('\\', report_times_to_file);
2764 fputc (*p, report_times_to_file);
2766 fputc ('"', report_times_to_file);
2768 else
2769 fprintf (report_times_to_file, " %s", *j);
2772 fputc ('\n', report_times_to_file);
2778 return ret_code;
2782 /* Find all the switches given to us
2783 and make a vector describing them.
2784 The elements of the vector are strings, one per switch given.
2785 If a switch uses following arguments, then the `part1' field
2786 is the switch itself and the `args' field
2787 is a null-terminated vector containing the following arguments.
2788 Bits in the `live_cond' field are:
2789 SWITCH_LIVE to indicate this switch is true in a conditional spec.
2790 SWITCH_FALSE to indicate this switch is overridden by a later switch.
2791 SWITCH_IGNORE to indicate this switch should be ignored (used in %<S).
2792 SWITCH_IGNORE_PERMANENTLY to indicate this switch should be ignored
2793 in all do_spec calls afterwards. Used for %<S from self specs.
2794 The `validated' field is nonzero if any spec has looked at this switch;
2795 if it remains zero at the end of the run, it must be meaningless. */
2797 #define SWITCH_LIVE (1 << 0)
2798 #define SWITCH_FALSE (1 << 1)
2799 #define SWITCH_IGNORE (1 << 2)
2800 #define SWITCH_IGNORE_PERMANENTLY (1 << 3)
2801 #define SWITCH_KEEP_FOR_GCC (1 << 4)
2803 struct switchstr
2805 const char *part1;
2806 const char **args;
2807 unsigned int live_cond;
2808 unsigned char validated;
2809 unsigned char ordering;
2812 static struct switchstr *switches;
2814 static int n_switches;
2816 static int n_switches_alloc;
2818 /* Set to zero if -fcompare-debug is disabled, positive if it's
2819 enabled and we're running the first compilation, negative if it's
2820 enabled and we're running the second compilation. For most of the
2821 time, it's in the range -1..1, but it can be temporarily set to 2
2822 or 3 to indicate that the -fcompare-debug flags didn't come from
2823 the command-line, but rather from the GCC_COMPARE_DEBUG environment
2824 variable, until a synthesized -fcompare-debug flag is added to the
2825 command line. */
2826 int compare_debug;
2828 /* Set to nonzero if we've seen the -fcompare-debug-second flag. */
2829 int compare_debug_second;
2831 /* Set to the flags that should be passed to the second compilation in
2832 a -fcompare-debug compilation. */
2833 const char *compare_debug_opt;
2835 static struct switchstr *switches_debug_check[2];
2837 static int n_switches_debug_check[2];
2839 static int n_switches_alloc_debug_check[2];
2841 static char *debug_check_temp_file[2];
2843 /* Language is one of three things:
2845 1) The name of a real programming language.
2846 2) NULL, indicating that no one has figured out
2847 what it is yet.
2848 3) '*', indicating that the file should be passed
2849 to the linker. */
2850 struct infile
2852 const char *name;
2853 const char *language;
2854 struct compiler *incompiler;
2855 bool compiled;
2856 bool preprocessed;
2859 /* Also a vector of input files specified. */
2861 static struct infile *infiles;
2863 int n_infiles;
2865 static int n_infiles_alloc;
2867 /* True if multiple input files are being compiled to a single
2868 assembly file. */
2870 static bool combine_inputs;
2872 /* This counts the number of libraries added by lang_specific_driver, so that
2873 we can tell if there were any user supplied any files or libraries. */
2875 static int added_libraries;
2877 /* And a vector of corresponding output files is made up later. */
2879 const char **outfiles;
2881 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2883 /* Convert NAME to a new name if it is the standard suffix. DO_EXE
2884 is true if we should look for an executable suffix. DO_OBJ
2885 is true if we should look for an object suffix. */
2887 static const char *
2888 convert_filename (const char *name, int do_exe ATTRIBUTE_UNUSED,
2889 int do_obj ATTRIBUTE_UNUSED)
2891 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2892 int i;
2893 #endif
2894 int len;
2896 if (name == NULL)
2897 return NULL;
2899 len = strlen (name);
2901 #ifdef HAVE_TARGET_OBJECT_SUFFIX
2902 /* Convert x.o to x.obj if TARGET_OBJECT_SUFFIX is ".obj". */
2903 if (do_obj && len > 2
2904 && name[len - 2] == '.'
2905 && name[len - 1] == 'o')
2907 obstack_grow (&obstack, name, len - 2);
2908 obstack_grow0 (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX));
2909 name = XOBFINISH (&obstack, const char *);
2911 #endif
2913 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2914 /* If there is no filetype, make it the executable suffix (which includes
2915 the "."). But don't get confused if we have just "-o". */
2916 if (! do_exe || TARGET_EXECUTABLE_SUFFIX[0] == 0 || (len == 2 && name[0] == '-'))
2917 return name;
2919 for (i = len - 1; i >= 0; i--)
2920 if (IS_DIR_SEPARATOR (name[i]))
2921 break;
2923 for (i++; i < len; i++)
2924 if (name[i] == '.')
2925 return name;
2927 obstack_grow (&obstack, name, len);
2928 obstack_grow0 (&obstack, TARGET_EXECUTABLE_SUFFIX,
2929 strlen (TARGET_EXECUTABLE_SUFFIX));
2930 name = XOBFINISH (&obstack, const char *);
2931 #endif
2933 return name;
2935 #endif
2937 /* Display the command line switches accepted by gcc. */
2938 static void
2939 display_help (void)
2941 printf (_("Usage: %s [options] file...\n"), progname);
2942 fputs (_("Options:\n"), stdout);
2944 fputs (_(" -pass-exit-codes Exit with highest error code from a phase\n"), stdout);
2945 fputs (_(" --help Display this information\n"), stdout);
2946 fputs (_(" --target-help Display target specific command line options\n"), stdout);
2947 fputs (_(" --help={target|optimizers|warnings|params|[^]{joined|separate|undocumented}}[,...]\n"), stdout);
2948 fputs (_(" Display specific types of command line options\n"), stdout);
2949 if (! verbose_flag)
2950 fputs (_(" (Use '-v --help' to display command line options of sub-processes)\n"), stdout);
2951 fputs (_(" --version Display compiler version information\n"), stdout);
2952 fputs (_(" -dumpspecs Display all of the built in spec strings\n"), stdout);
2953 fputs (_(" -dumpversion Display the version of the compiler\n"), stdout);
2954 fputs (_(" -dumpmachine Display the compiler's target processor\n"), stdout);
2955 fputs (_(" -print-search-dirs Display the directories in the compiler's search path\n"), stdout);
2956 fputs (_(" -print-libgcc-file-name Display the name of the compiler's companion library\n"), stdout);
2957 fputs (_(" -print-file-name=<lib> Display the full path to library <lib>\n"), stdout);
2958 fputs (_(" -print-prog-name=<prog> Display the full path to compiler component <prog>\n"), stdout);
2959 fputs (_(" -print-multi-directory Display the root directory for versions of libgcc\n"), stdout);
2960 fputs (_("\
2961 -print-multi-lib Display the mapping between command line options and\n\
2962 multiple library search directories\n"), stdout);
2963 fputs (_(" -print-multi-os-directory Display the relative path to OS libraries\n"), stdout);
2964 fputs (_(" -print-sysroot Display the target libraries directory\n"), stdout);
2965 fputs (_(" -print-sysroot-headers-suffix Display the sysroot suffix used to find headers\n"), stdout);
2966 fputs (_(" -Wa,<options> Pass comma-separated <options> on to the assembler\n"), stdout);
2967 fputs (_(" -Wp,<options> Pass comma-separated <options> on to the preprocessor\n"), stdout);
2968 fputs (_(" -Wl,<options> Pass comma-separated <options> on to the linker\n"), stdout);
2969 fputs (_(" -Xassembler <arg> Pass <arg> on to the assembler\n"), stdout);
2970 fputs (_(" -Xpreprocessor <arg> Pass <arg> on to the preprocessor\n"), stdout);
2971 fputs (_(" -Xlinker <arg> Pass <arg> on to the linker\n"), stdout);
2972 fputs (_(" -save-temps Do not delete intermediate files\n"), stdout);
2973 fputs (_(" -save-temps=<arg> Do not delete intermediate files\n"), stdout);
2974 fputs (_("\
2975 -no-canonical-prefixes Do not canonicalize paths when building relative\n\
2976 prefixes to other gcc components\n"), stdout);
2977 fputs (_(" -pipe Use pipes rather than intermediate files\n"), stdout);
2978 fputs (_(" -time Time the execution of each subprocess\n"), stdout);
2979 fputs (_(" -specs=<file> Override built-in specs with the contents of <file>\n"), stdout);
2980 fputs (_(" -std=<standard> Assume that the input sources are for <standard>\n"), stdout);
2981 fputs (_("\
2982 --sysroot=<directory> Use <directory> as the root directory for headers\n\
2983 and libraries\n"), stdout);
2984 fputs (_(" -B <directory> Add <directory> to the compiler's search paths\n"), stdout);
2985 fputs (_(" -v Display the programs invoked by the compiler\n"), stdout);
2986 fputs (_(" -### Like -v but options quoted and commands not executed\n"), stdout);
2987 fputs (_(" -E Preprocess only; do not compile, assemble or link\n"), stdout);
2988 fputs (_(" -S Compile only; do not assemble or link\n"), stdout);
2989 fputs (_(" -c Compile and assemble, but do not link\n"), stdout);
2990 fputs (_(" -o <file> Place the output into <file>\n"), stdout);
2991 fputs (_("\
2992 -x <language> Specify the language of the following input files\n\
2993 Permissible languages include: c c++ assembler none\n\
2994 'none' means revert to the default behavior of\n\
2995 guessing the language based on the file's extension\n\
2996 "), stdout);
2998 printf (_("\
2999 \nOptions starting with -g, -f, -m, -O, -W, or --param are automatically\n\
3000 passed on to the various sub-processes invoked by %s. In order to pass\n\
3001 other options on to these processes the -W<letter> options must be used.\n\
3002 "), progname);
3004 /* The rest of the options are displayed by invocations of the various
3005 sub-processes. */
3008 static void
3009 add_preprocessor_option (const char *option, int len)
3011 VEC_safe_push (char_p, heap, preprocessor_options,
3012 save_string (option, len));
3015 static void
3016 add_assembler_option (const char *option, int len)
3018 VEC_safe_push (char_p, heap, assembler_options, save_string (option, len));
3021 static void
3022 add_linker_option (const char *option, int len)
3024 VEC_safe_push (char_p, heap, linker_options, save_string (option, len));
3027 /* Allocate space for an input file in infiles. */
3029 static void
3030 alloc_infile (void)
3032 if (n_infiles_alloc == 0)
3034 n_infiles_alloc = 16;
3035 infiles = XNEWVEC (struct infile, n_infiles_alloc);
3037 else if (n_infiles_alloc == n_infiles)
3039 n_infiles_alloc *= 2;
3040 infiles = XRESIZEVEC (struct infile, infiles, n_infiles_alloc);
3044 /* Store an input file with the given NAME and LANGUAGE in
3045 infiles. */
3047 static void
3048 add_infile (const char *name, const char *language)
3050 alloc_infile ();
3051 infiles[n_infiles].name = name;
3052 infiles[n_infiles++].language = language;
3055 /* Allocate space for a switch in switches. */
3057 static void
3058 alloc_switch (void)
3060 if (n_switches_alloc == 0)
3062 n_switches_alloc = 16;
3063 switches = XNEWVEC (struct switchstr, n_switches_alloc);
3065 else if (n_switches_alloc == n_switches)
3067 n_switches_alloc *= 2;
3068 switches = XRESIZEVEC (struct switchstr, switches, n_switches_alloc);
3072 /* Save an option OPT with N_ARGS arguments in array ARGS, marking it
3073 as validated if VALIDATED. */
3075 static void
3076 save_switch (const char *opt, size_t n_args, const char *const *args,
3077 bool validated)
3079 alloc_switch ();
3080 switches[n_switches].part1 = opt + 1;
3081 if (n_args == 0)
3082 switches[n_switches].args = 0;
3083 else
3085 switches[n_switches].args = XNEWVEC (const char *, n_args + 1);
3086 memcpy (switches[n_switches].args, args, n_args * sizeof (const char *));
3087 switches[n_switches].args[n_args] = NULL;
3090 switches[n_switches].live_cond = 0;
3091 switches[n_switches].validated = validated;
3092 switches[n_switches].ordering = 0;
3093 n_switches++;
3096 /* Handle an option DECODED that is unknown to the option-processing
3097 machinery. */
3099 static bool
3100 driver_unknown_option_callback (const struct cl_decoded_option *decoded)
3102 const char *opt = decoded->arg;
3103 if (opt[1] == 'W' && opt[2] == 'n' && opt[3] == 'o' && opt[4] == '-'
3104 && !(decoded->errors & CL_ERR_NEGATIVE))
3106 /* Leave unknown -Wno-* options for the compiler proper, to be
3107 diagnosed only if there are warnings. */
3108 save_switch (decoded->canonical_option[0],
3109 decoded->canonical_option_num_elements - 1,
3110 &decoded->canonical_option[1], false);
3111 return false;
3113 else
3114 return true;
3117 /* Handle an option DECODED that is not marked as CL_DRIVER.
3118 LANG_MASK will always be CL_DRIVER. */
3120 static void
3121 driver_wrong_lang_callback (const struct cl_decoded_option *decoded,
3122 unsigned int lang_mask ATTRIBUTE_UNUSED)
3124 /* At this point, non-driver options are accepted (and expected to
3125 be passed down by specs) unless marked to be rejected by the
3126 driver. Options to be rejected by the driver but accepted by the
3127 compilers proper are treated just like completely unknown
3128 options. */
3129 const struct cl_option *option = &cl_options[decoded->opt_index];
3131 if (option->cl_reject_driver)
3132 error ("unrecognized command line option %qs",
3133 decoded->orig_option_with_args_text);
3134 else
3135 save_switch (decoded->canonical_option[0],
3136 decoded->canonical_option_num_elements - 1,
3137 &decoded->canonical_option[1], false);
3140 /* Note that an option (index OPT_INDEX, argument ARG, value VALUE)
3141 has been successfully handled with a handler for mask MASK. */
3143 static void
3144 driver_post_handling_callback (const struct cl_decoded_option *decoded ATTRIBUTE_UNUSED,
3145 unsigned int mask ATTRIBUTE_UNUSED)
3147 /* Nothing to do here. */
3150 static const char *spec_lang = 0;
3151 static int last_language_n_infiles;
3153 /* Handle a driver option; arguments and return value as for
3154 handle_option. */
3156 static bool
3157 driver_handle_option (struct gcc_options *opts,
3158 struct gcc_options *opts_set,
3159 const struct cl_decoded_option *decoded,
3160 unsigned int lang_mask ATTRIBUTE_UNUSED, int kind,
3161 location_t loc,
3162 const struct cl_option_handlers *handlers ATTRIBUTE_UNUSED,
3163 diagnostic_context *dc)
3165 size_t opt_index = decoded->opt_index;
3166 const char *arg = decoded->arg;
3167 const char *compare_debug_replacement_opt;
3168 int value = decoded->value;
3169 bool validated = false;
3170 bool do_save = true;
3172 gcc_assert (opts == &global_options);
3173 gcc_assert (opts_set == &global_options_set);
3174 gcc_assert (kind == DK_UNSPECIFIED);
3175 gcc_assert (loc == UNKNOWN_LOCATION);
3176 gcc_assert (dc == global_dc);
3178 switch (opt_index)
3180 case OPT_dumpspecs:
3182 struct spec_list *sl;
3183 init_spec ();
3184 for (sl = specs; sl; sl = sl->next)
3185 printf ("*%s:\n%s\n\n", sl->name, *(sl->ptr_spec));
3186 if (link_command_spec)
3187 printf ("*link_command:\n%s\n\n", link_command_spec);
3188 exit (0);
3191 case OPT_dumpversion:
3192 printf ("%s\n", spec_version);
3193 exit (0);
3195 case OPT_dumpmachine:
3196 printf ("%s\n", spec_machine);
3197 exit (0);
3199 case OPT__version:
3200 print_version = 1;
3202 /* CPP driver cannot obtain switch from cc1_options. */
3203 if (is_cpp_driver)
3204 add_preprocessor_option ("--version", strlen ("--version"));
3205 add_assembler_option ("--version", strlen ("--version"));
3206 add_linker_option ("--version", strlen ("--version"));
3207 break;
3209 case OPT__help:
3210 print_help_list = 1;
3212 /* CPP driver cannot obtain switch from cc1_options. */
3213 if (is_cpp_driver)
3214 add_preprocessor_option ("--help", 6);
3215 add_assembler_option ("--help", 6);
3216 add_linker_option ("--help", 6);
3217 break;
3219 case OPT__help_:
3220 print_subprocess_help = 2;
3221 break;
3223 case OPT__target_help:
3224 print_subprocess_help = 1;
3226 /* CPP driver cannot obtain switch from cc1_options. */
3227 if (is_cpp_driver)
3228 add_preprocessor_option ("--target-help", 13);
3229 add_assembler_option ("--target-help", 13);
3230 add_linker_option ("--target-help", 13);
3231 break;
3233 case OPT_pass_exit_codes:
3234 case OPT_print_search_dirs:
3235 case OPT_print_file_name_:
3236 case OPT_print_prog_name_:
3237 case OPT_print_multi_lib:
3238 case OPT_print_multi_directory:
3239 case OPT_print_sysroot:
3240 case OPT_print_multi_os_directory:
3241 case OPT_print_sysroot_headers_suffix:
3242 case OPT_time:
3243 case OPT_wrapper:
3244 /* These options set the variables specified in common.opt
3245 automatically, and do not need to be saved for spec
3246 processing. */
3247 do_save = false;
3248 break;
3250 case OPT_print_libgcc_file_name:
3251 print_file_name = "libgcc.a";
3252 do_save = false;
3253 break;
3255 case OPT_fcompare_debug_second:
3256 compare_debug_second = 1;
3257 break;
3259 case OPT_fcompare_debug:
3260 switch (value)
3262 case 0:
3263 compare_debug_replacement_opt = "-fcompare-debug=";
3264 arg = "";
3265 goto compare_debug_with_arg;
3267 case 1:
3268 compare_debug_replacement_opt = "-fcompare-debug=-gtoggle";
3269 arg = "-gtoggle";
3270 goto compare_debug_with_arg;
3272 default:
3273 gcc_unreachable ();
3275 break;
3277 case OPT_fcompare_debug_:
3278 compare_debug_replacement_opt = decoded->canonical_option[0];
3279 compare_debug_with_arg:
3280 gcc_assert (decoded->canonical_option_num_elements == 1);
3281 gcc_assert (arg != NULL);
3282 if (*arg)
3283 compare_debug = 1;
3284 else
3285 compare_debug = -1;
3286 if (compare_debug < 0)
3287 compare_debug_opt = NULL;
3288 else
3289 compare_debug_opt = arg;
3290 save_switch (compare_debug_replacement_opt, 0, NULL, validated);
3291 return true;
3293 case OPT_Wa_:
3295 int prev, j;
3296 /* Pass the rest of this option to the assembler. */
3298 /* Split the argument at commas. */
3299 prev = 0;
3300 for (j = 0; arg[j]; j++)
3301 if (arg[j] == ',')
3303 add_assembler_option (arg + prev, j - prev);
3304 prev = j + 1;
3307 /* Record the part after the last comma. */
3308 add_assembler_option (arg + prev, j - prev);
3310 do_save = false;
3311 break;
3313 case OPT_Wp_:
3315 int prev, j;
3316 /* Pass the rest of this option to the preprocessor. */
3318 /* Split the argument at commas. */
3319 prev = 0;
3320 for (j = 0; arg[j]; j++)
3321 if (arg[j] == ',')
3323 add_preprocessor_option (arg + prev, j - prev);
3324 prev = j + 1;
3327 /* Record the part after the last comma. */
3328 add_preprocessor_option (arg + prev, j - prev);
3330 do_save = false;
3331 break;
3333 case OPT_Wl_:
3335 int prev, j;
3336 /* Split the argument at commas. */
3337 prev = 0;
3338 for (j = 0; arg[j]; j++)
3339 if (arg[j] == ',')
3341 add_infile (save_string (arg + prev, j - prev), "*");
3342 prev = j + 1;
3344 /* Record the part after the last comma. */
3345 add_infile (arg + prev, "*");
3347 do_save = false;
3348 break;
3350 case OPT_Xlinker:
3351 add_infile (arg, "*");
3352 do_save = false;
3353 break;
3355 case OPT_Xpreprocessor:
3356 add_preprocessor_option (arg, strlen (arg));
3357 do_save = false;
3358 break;
3360 case OPT_Xassembler:
3361 add_assembler_option (arg, strlen (arg));
3362 do_save = false;
3363 break;
3365 case OPT_l:
3366 /* POSIX allows separation of -l and the lib arg; canonicalize
3367 by concatenating -l with its arg */
3368 add_infile (concat ("-l", arg, NULL), "*");
3369 do_save = false;
3370 break;
3372 case OPT_L:
3373 /* Similarly, canonicalize -L for linkers that may not accept
3374 separate arguments. */
3375 save_switch (concat ("-L", arg, NULL), 0, NULL, validated);
3376 return true;
3378 case OPT_F:
3379 /* Likewise -F. */
3380 save_switch (concat ("-F", arg, NULL), 0, NULL, validated);
3381 return true;
3383 case OPT_save_temps:
3384 save_temps_flag = SAVE_TEMPS_CWD;
3385 validated = true;
3386 break;
3388 case OPT_save_temps_:
3389 if (strcmp (arg, "cwd") == 0)
3390 save_temps_flag = SAVE_TEMPS_CWD;
3391 else if (strcmp (arg, "obj") == 0
3392 || strcmp (arg, "object") == 0)
3393 save_temps_flag = SAVE_TEMPS_OBJ;
3394 else
3395 fatal_error ("%qs is an unknown -save-temps option",
3396 decoded->orig_option_with_args_text);
3397 break;
3399 case OPT_no_canonical_prefixes:
3400 /* Already handled as a special case, so ignored here. */
3401 do_save = false;
3402 break;
3404 case OPT_pipe:
3405 validated = true;
3406 /* These options set the variables specified in common.opt
3407 automatically, but do need to be saved for spec
3408 processing. */
3409 break;
3411 case OPT_specs_:
3413 struct user_specs *user = XNEW (struct user_specs);
3415 user->next = (struct user_specs *) 0;
3416 user->filename = arg;
3417 if (user_specs_tail)
3418 user_specs_tail->next = user;
3419 else
3420 user_specs_head = user;
3421 user_specs_tail = user;
3423 do_save = false;
3424 break;
3426 case OPT__sysroot_:
3427 target_system_root = arg;
3428 target_system_root_changed = 1;
3429 do_save = false;
3430 break;
3432 case OPT_time_:
3433 if (report_times_to_file)
3434 fclose (report_times_to_file);
3435 report_times_to_file = fopen (arg, "a");
3436 do_save = false;
3437 break;
3439 case OPT____:
3440 /* "-###"
3441 This is similar to -v except that there is no execution
3442 of the commands and the echoed arguments are quoted. It
3443 is intended for use in shell scripts to capture the
3444 driver-generated command line. */
3445 verbose_only_flag++;
3446 verbose_flag = 1;
3447 do_save = false;
3448 break;
3450 case OPT_B:
3452 size_t len = strlen (arg);
3454 /* Catch the case where the user has forgotten to append a
3455 directory separator to the path. Note, they may be using
3456 -B to add an executable name prefix, eg "i386-elf-", in
3457 order to distinguish between multiple installations of
3458 GCC in the same directory. Hence we must check to see
3459 if appending a directory separator actually makes a
3460 valid directory name. */
3461 if (!IS_DIR_SEPARATOR (arg[len - 1])
3462 && is_directory (arg, false))
3464 char *tmp = XNEWVEC (char, len + 2);
3465 strcpy (tmp, arg);
3466 tmp[len] = DIR_SEPARATOR;
3467 tmp[++len] = 0;
3468 arg = tmp;
3471 add_prefix (&exec_prefixes, arg, NULL,
3472 PREFIX_PRIORITY_B_OPT, 0, 0);
3473 add_prefix (&startfile_prefixes, arg, NULL,
3474 PREFIX_PRIORITY_B_OPT, 0, 0);
3475 add_prefix (&include_prefixes, arg, NULL,
3476 PREFIX_PRIORITY_B_OPT, 0, 0);
3478 validated = true;
3479 break;
3481 case OPT_x:
3482 spec_lang = arg;
3483 if (!strcmp (spec_lang, "none"))
3484 /* Suppress the warning if -xnone comes after the last input
3485 file, because alternate command interfaces like g++ might
3486 find it useful to place -xnone after each input file. */
3487 spec_lang = 0;
3488 else
3489 last_language_n_infiles = n_infiles;
3490 do_save = false;
3491 break;
3493 case OPT_o:
3494 have_o = 1;
3495 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX) || defined(HAVE_TARGET_OBJECT_SUFFIX)
3496 arg = convert_filename (arg, ! have_c, 0);
3497 #endif
3498 /* Save the output name in case -save-temps=obj was used. */
3499 save_temps_prefix = xstrdup (arg);
3500 /* On some systems, ld cannot handle "-o" without a space. So
3501 split the option from its argument. */
3502 save_switch ("-o", 1, &arg, validated);
3503 return true;
3505 case OPT_static_libgcc:
3506 case OPT_shared_libgcc:
3507 case OPT_static_libgfortran:
3508 case OPT_static_libstdc__:
3509 /* These are always valid, since gcc.c itself understands the
3510 first two, gfortranspec.c understands -static-libgfortran and
3511 g++spec.c understands -static-libstdc++ */
3512 validated = true;
3513 break;
3515 default:
3516 /* Various driver options need no special processing at this
3517 point, having been handled in a prescan above or being
3518 handled by specs. */
3519 break;
3522 if (do_save)
3523 save_switch (decoded->canonical_option[0],
3524 decoded->canonical_option_num_elements - 1,
3525 &decoded->canonical_option[1], validated);
3526 return true;
3529 /* Put the driver's standard set of option handlers in *HANDLERS. */
3531 static void
3532 set_option_handlers (struct cl_option_handlers *handlers)
3534 handlers->unknown_option_callback = driver_unknown_option_callback;
3535 handlers->wrong_lang_callback = driver_wrong_lang_callback;
3536 handlers->post_handling_callback = driver_post_handling_callback;
3537 handlers->num_handlers = 3;
3538 handlers->handlers[0].handler = driver_handle_option;
3539 handlers->handlers[0].mask = CL_DRIVER;
3540 handlers->handlers[1].handler = common_handle_option;
3541 handlers->handlers[1].mask = CL_COMMON;
3542 handlers->handlers[2].handler = target_handle_option;
3543 handlers->handlers[2].mask = CL_TARGET;
3546 /* Create the vector `switches' and its contents.
3547 Store its length in `n_switches'. */
3549 static void
3550 process_command (unsigned int decoded_options_count,
3551 struct cl_decoded_option *decoded_options)
3553 const char *temp;
3554 char *temp1;
3555 const char *tooldir_prefix;
3556 char *(*get_relative_prefix) (const char *, const char *,
3557 const char *) = NULL;
3558 struct cl_option_handlers handlers;
3559 unsigned int j;
3561 gcc_exec_prefix = getenv ("GCC_EXEC_PREFIX");
3563 n_switches = 0;
3564 n_infiles = 0;
3565 added_libraries = 0;
3567 /* Figure compiler version from version string. */
3569 compiler_version = temp1 = xstrdup (version_string);
3571 for (; *temp1; ++temp1)
3573 if (*temp1 == ' ')
3575 *temp1 = '\0';
3576 break;
3580 /* Handle any -no-canonical-prefixes flag early, to assign the function
3581 that builds relative prefixes. This function creates default search
3582 paths that are needed later in normal option handling. */
3584 for (j = 1; j < decoded_options_count; j++)
3586 if (decoded_options[j].opt_index == OPT_no_canonical_prefixes)
3588 get_relative_prefix = make_relative_prefix_ignore_links;
3589 break;
3592 if (! get_relative_prefix)
3593 get_relative_prefix = make_relative_prefix;
3595 /* Set up the default search paths. If there is no GCC_EXEC_PREFIX,
3596 see if we can create it from the pathname specified in
3597 decoded_options[0].arg. */
3599 gcc_libexec_prefix = standard_libexec_prefix;
3600 #ifndef VMS
3601 /* FIXME: make_relative_prefix doesn't yet work for VMS. */
3602 if (!gcc_exec_prefix)
3604 gcc_exec_prefix = get_relative_prefix (decoded_options[0].arg,
3605 standard_bindir_prefix,
3606 standard_exec_prefix);
3607 gcc_libexec_prefix = get_relative_prefix (decoded_options[0].arg,
3608 standard_bindir_prefix,
3609 standard_libexec_prefix);
3610 if (gcc_exec_prefix)
3611 xputenv (concat ("GCC_EXEC_PREFIX=", gcc_exec_prefix, NULL));
3613 else
3615 /* make_relative_prefix requires a program name, but
3616 GCC_EXEC_PREFIX is typically a directory name with a trailing
3617 / (which is ignored by make_relative_prefix), so append a
3618 program name. */
3619 char *tmp_prefix = concat (gcc_exec_prefix, "gcc", NULL);
3620 gcc_libexec_prefix = get_relative_prefix (tmp_prefix,
3621 standard_exec_prefix,
3622 standard_libexec_prefix);
3624 /* The path is unrelocated, so fallback to the original setting. */
3625 if (!gcc_libexec_prefix)
3626 gcc_libexec_prefix = standard_libexec_prefix;
3628 free (tmp_prefix);
3630 #else
3631 #endif
3632 /* From this point onward, gcc_exec_prefix is non-null if the toolchain
3633 is relocated. The toolchain was either relocated using GCC_EXEC_PREFIX
3634 or an automatically created GCC_EXEC_PREFIX from
3635 decoded_options[0].arg. */
3637 /* Do language-specific adjustment/addition of flags. */
3638 lang_specific_driver (&decoded_options, &decoded_options_count,
3639 &added_libraries);
3641 if (gcc_exec_prefix)
3643 int len = strlen (gcc_exec_prefix);
3645 if (len > (int) sizeof ("/lib/gcc/") - 1
3646 && (IS_DIR_SEPARATOR (gcc_exec_prefix[len-1])))
3648 temp = gcc_exec_prefix + len - sizeof ("/lib/gcc/") + 1;
3649 if (IS_DIR_SEPARATOR (*temp)
3650 && filename_ncmp (temp + 1, "lib", 3) == 0
3651 && IS_DIR_SEPARATOR (temp[4])
3652 && filename_ncmp (temp + 5, "gcc", 3) == 0)
3653 len -= sizeof ("/lib/gcc/") - 1;
3656 set_std_prefix (gcc_exec_prefix, len);
3657 add_prefix (&exec_prefixes, gcc_libexec_prefix, "GCC",
3658 PREFIX_PRIORITY_LAST, 0, 0);
3659 add_prefix (&startfile_prefixes, gcc_exec_prefix, "GCC",
3660 PREFIX_PRIORITY_LAST, 0, 0);
3663 /* COMPILER_PATH and LIBRARY_PATH have values
3664 that are lists of directory names with colons. */
3666 temp = getenv ("COMPILER_PATH");
3667 if (temp)
3669 const char *startp, *endp;
3670 char *nstore = (char *) alloca (strlen (temp) + 3);
3672 startp = endp = temp;
3673 while (1)
3675 if (*endp == PATH_SEPARATOR || *endp == 0)
3677 strncpy (nstore, startp, endp - startp);
3678 if (endp == startp)
3679 strcpy (nstore, concat (".", dir_separator_str, NULL));
3680 else if (!IS_DIR_SEPARATOR (endp[-1]))
3682 nstore[endp - startp] = DIR_SEPARATOR;
3683 nstore[endp - startp + 1] = 0;
3685 else
3686 nstore[endp - startp] = 0;
3687 add_prefix (&exec_prefixes, nstore, 0,
3688 PREFIX_PRIORITY_LAST, 0, 0);
3689 add_prefix (&include_prefixes, nstore, 0,
3690 PREFIX_PRIORITY_LAST, 0, 0);
3691 if (*endp == 0)
3692 break;
3693 endp = startp = endp + 1;
3695 else
3696 endp++;
3700 temp = getenv (LIBRARY_PATH_ENV);
3701 if (temp && *cross_compile == '0')
3703 const char *startp, *endp;
3704 char *nstore = (char *) alloca (strlen (temp) + 3);
3706 startp = endp = temp;
3707 while (1)
3709 if (*endp == PATH_SEPARATOR || *endp == 0)
3711 strncpy (nstore, startp, endp - startp);
3712 if (endp == startp)
3713 strcpy (nstore, concat (".", dir_separator_str, NULL));
3714 else if (!IS_DIR_SEPARATOR (endp[-1]))
3716 nstore[endp - startp] = DIR_SEPARATOR;
3717 nstore[endp - startp + 1] = 0;
3719 else
3720 nstore[endp - startp] = 0;
3721 add_prefix (&startfile_prefixes, nstore, NULL,
3722 PREFIX_PRIORITY_LAST, 0, 1);
3723 if (*endp == 0)
3724 break;
3725 endp = startp = endp + 1;
3727 else
3728 endp++;
3732 /* Use LPATH like LIBRARY_PATH (for the CMU build program). */
3733 temp = getenv ("LPATH");
3734 if (temp && *cross_compile == '0')
3736 const char *startp, *endp;
3737 char *nstore = (char *) alloca (strlen (temp) + 3);
3739 startp = endp = temp;
3740 while (1)
3742 if (*endp == PATH_SEPARATOR || *endp == 0)
3744 strncpy (nstore, startp, endp - startp);
3745 if (endp == startp)
3746 strcpy (nstore, concat (".", dir_separator_str, NULL));
3747 else if (!IS_DIR_SEPARATOR (endp[-1]))
3749 nstore[endp - startp] = DIR_SEPARATOR;
3750 nstore[endp - startp + 1] = 0;
3752 else
3753 nstore[endp - startp] = 0;
3754 add_prefix (&startfile_prefixes, nstore, NULL,
3755 PREFIX_PRIORITY_LAST, 0, 1);
3756 if (*endp == 0)
3757 break;
3758 endp = startp = endp + 1;
3760 else
3761 endp++;
3765 /* Process the options and store input files and switches in their
3766 vectors. */
3768 last_language_n_infiles = -1;
3770 set_option_handlers (&handlers);
3772 for (j = 1; j < decoded_options_count; j++)
3774 switch (decoded_options[j].opt_index)
3776 case OPT_S:
3777 case OPT_c:
3778 case OPT_E:
3779 have_c = 1;
3780 break;
3782 if (have_c)
3783 break;
3786 for (j = 1; j < decoded_options_count; j++)
3788 if (decoded_options[j].opt_index == OPT_SPECIAL_input_file)
3790 const char *arg = decoded_options[j].arg;
3791 const char *p = strrchr (arg, '@');
3792 char *fname;
3793 long offset;
3794 int consumed;
3795 #ifdef HAVE_TARGET_OBJECT_SUFFIX
3796 arg = convert_filename (arg, 0, access (arg, F_OK));
3797 #endif
3798 /* For LTO static archive support we handle input file
3799 specifications that are composed of a filename and
3800 an offset like FNAME@OFFSET. */
3801 if (p
3802 && p != arg
3803 && sscanf (p, "@%li%n", &offset, &consumed) >= 1
3804 && strlen (p) == (unsigned int)consumed)
3806 fname = (char *)xmalloc (p - arg + 1);
3807 memcpy (fname, arg, p - arg);
3808 fname[p - arg] = '\0';
3809 /* Only accept non-stdin and existing FNAME parts, otherwise
3810 try with the full name. */
3811 if (strcmp (fname, "-") == 0 || access (fname, F_OK) < 0)
3813 free (fname);
3814 fname = xstrdup (arg);
3817 else
3818 fname = xstrdup (arg);
3820 if (strcmp (fname, "-") != 0 && access (fname, F_OK) < 0)
3821 perror_with_name (fname);
3822 else
3823 add_infile (arg, spec_lang);
3825 free (fname);
3826 continue;
3829 read_cmdline_option (&global_options, &global_options_set,
3830 decoded_options + j, UNKNOWN_LOCATION,
3831 CL_DRIVER, &handlers, global_dc);
3834 /* If -save-temps=obj and -o name, create the prefix to use for %b.
3835 Otherwise just make -save-temps=obj the same as -save-temps=cwd. */
3836 if (save_temps_flag == SAVE_TEMPS_OBJ && save_temps_prefix != NULL)
3838 save_temps_length = strlen (save_temps_prefix);
3839 temp = strrchr (lbasename (save_temps_prefix), '.');
3840 if (temp)
3842 save_temps_length -= strlen (temp);
3843 save_temps_prefix[save_temps_length] = '\0';
3847 else if (save_temps_prefix != NULL)
3849 free (save_temps_prefix);
3850 save_temps_prefix = NULL;
3853 if (save_temps_flag && use_pipes)
3855 /* -save-temps overrides -pipe, so that temp files are produced */
3856 if (save_temps_flag)
3857 warning (0, "-pipe ignored because -save-temps specified");
3858 use_pipes = 0;
3861 if (!compare_debug)
3863 const char *gcd = getenv ("GCC_COMPARE_DEBUG");
3865 if (gcd && gcd[0] == '-')
3867 compare_debug = 2;
3868 compare_debug_opt = gcd;
3870 else if (gcd && *gcd && strcmp (gcd, "0"))
3872 compare_debug = 3;
3873 compare_debug_opt = "-gtoggle";
3876 else if (compare_debug < 0)
3878 compare_debug = 0;
3879 gcc_assert (!compare_debug_opt);
3882 /* Set up the search paths. We add directories that we expect to
3883 contain GNU Toolchain components before directories specified by
3884 the machine description so that we will find GNU components (like
3885 the GNU assembler) before those of the host system. */
3887 /* If we don't know where the toolchain has been installed, use the
3888 configured-in locations. */
3889 if (!gcc_exec_prefix)
3891 #ifndef OS2
3892 add_prefix (&exec_prefixes, standard_libexec_prefix, "GCC",
3893 PREFIX_PRIORITY_LAST, 1, 0);
3894 add_prefix (&exec_prefixes, standard_libexec_prefix, "BINUTILS",
3895 PREFIX_PRIORITY_LAST, 2, 0);
3896 add_prefix (&exec_prefixes, standard_exec_prefix, "BINUTILS",
3897 PREFIX_PRIORITY_LAST, 2, 0);
3898 #endif
3899 add_prefix (&startfile_prefixes, standard_exec_prefix, "BINUTILS",
3900 PREFIX_PRIORITY_LAST, 1, 0);
3903 gcc_assert (!IS_ABSOLUTE_PATH (tooldir_base_prefix));
3904 tooldir_prefix = concat (tooldir_base_prefix, spec_machine,
3905 dir_separator_str, NULL);
3907 /* Look for tools relative to the location from which the driver is
3908 running, or, if that is not available, the configured prefix. */
3909 tooldir_prefix
3910 = concat (gcc_exec_prefix ? gcc_exec_prefix : standard_exec_prefix,
3911 spec_machine, dir_separator_str,
3912 spec_version, dir_separator_str, tooldir_prefix, NULL);
3914 add_prefix (&exec_prefixes,
3915 concat (tooldir_prefix, "bin", dir_separator_str, NULL),
3916 "BINUTILS", PREFIX_PRIORITY_LAST, 0, 0);
3917 add_prefix (&startfile_prefixes,
3918 concat (tooldir_prefix, "lib", dir_separator_str, NULL),
3919 "BINUTILS", PREFIX_PRIORITY_LAST, 0, 1);
3921 #if defined(TARGET_SYSTEM_ROOT_RELOCATABLE) && !defined(VMS)
3922 /* If the normal TARGET_SYSTEM_ROOT is inside of $exec_prefix,
3923 then consider it to relocate with the rest of the GCC installation
3924 if GCC_EXEC_PREFIX is set.
3925 ``make_relative_prefix'' is not compiled for VMS, so don't call it. */
3926 if (target_system_root && !target_system_root_changed && gcc_exec_prefix)
3928 char *tmp_prefix = get_relative_prefix (decoded_options[0].arg,
3929 standard_bindir_prefix,
3930 target_system_root);
3931 if (tmp_prefix && access_check (tmp_prefix, F_OK) == 0)
3933 target_system_root = tmp_prefix;
3934 target_system_root_changed = 1;
3937 #endif
3939 /* More prefixes are enabled in main, after we read the specs file
3940 and determine whether this is cross-compilation or not. */
3942 if (n_infiles == last_language_n_infiles && spec_lang != 0)
3943 warning (0, "%<-x %s%> after last input file has no effect", spec_lang);
3945 if (compare_debug == 2 || compare_debug == 3)
3947 alloc_switch ();
3948 switches[n_switches].part1 = concat ("fcompare-debug=",
3949 compare_debug_opt,
3950 NULL);
3951 switches[n_switches].args = 0;
3952 switches[n_switches].live_cond = 0;
3953 switches[n_switches].validated = 0;
3954 switches[n_switches].ordering = 0;
3955 n_switches++;
3956 compare_debug = 1;
3959 /* Ensure we only invoke each subprocess once. */
3960 if (print_subprocess_help || print_help_list || print_version)
3962 n_infiles = 0;
3964 /* Create a dummy input file, so that we can pass
3965 the help option on to the various sub-processes. */
3966 add_infile ("help-dummy", "c");
3969 alloc_switch ();
3970 switches[n_switches].part1 = 0;
3971 alloc_infile ();
3972 infiles[n_infiles].name = 0;
3975 /* Store switches not filtered out by %<S in spec in COLLECT_GCC_OPTIONS
3976 and place that in the environment. */
3978 static void
3979 set_collect_gcc_options (void)
3981 int i;
3982 int first_time;
3984 /* Build COLLECT_GCC_OPTIONS to have all of the options specified to
3985 the compiler. */
3986 obstack_grow (&collect_obstack, "COLLECT_GCC_OPTIONS=",
3987 sizeof ("COLLECT_GCC_OPTIONS=") - 1);
3989 first_time = TRUE;
3990 for (i = 0; (int) i < n_switches; i++)
3992 const char *const *args;
3993 const char *p, *q;
3994 if (!first_time)
3995 obstack_grow (&collect_obstack, " ", 1);
3997 first_time = FALSE;
3999 /* Ignore elided switches. */
4000 if ((switches[i].live_cond
4001 & (SWITCH_IGNORE | SWITCH_KEEP_FOR_GCC))
4002 == SWITCH_IGNORE)
4003 continue;
4005 obstack_grow (&collect_obstack, "'-", 2);
4006 q = switches[i].part1;
4007 while ((p = strchr (q, '\'')))
4009 obstack_grow (&collect_obstack, q, p - q);
4010 obstack_grow (&collect_obstack, "'\\''", 4);
4011 q = ++p;
4013 obstack_grow (&collect_obstack, q, strlen (q));
4014 obstack_grow (&collect_obstack, "'", 1);
4016 for (args = switches[i].args; args && *args; args++)
4018 obstack_grow (&collect_obstack, " '", 2);
4019 q = *args;
4020 while ((p = strchr (q, '\'')))
4022 obstack_grow (&collect_obstack, q, p - q);
4023 obstack_grow (&collect_obstack, "'\\''", 4);
4024 q = ++p;
4026 obstack_grow (&collect_obstack, q, strlen (q));
4027 obstack_grow (&collect_obstack, "'", 1);
4030 obstack_grow (&collect_obstack, "\0", 1);
4031 xputenv (XOBFINISH (&collect_obstack, char *));
4034 /* Process a spec string, accumulating and running commands. */
4036 /* These variables describe the input file name.
4037 input_file_number is the index on outfiles of this file,
4038 so that the output file name can be stored for later use by %o.
4039 input_basename is the start of the part of the input file
4040 sans all directory names, and basename_length is the number
4041 of characters starting there excluding the suffix .c or whatever. */
4043 static const char *gcc_input_filename;
4044 static int input_file_number;
4045 size_t input_filename_length;
4046 static int basename_length;
4047 static int suffixed_basename_length;
4048 static const char *input_basename;
4049 static const char *input_suffix;
4050 #ifndef HOST_LACKS_INODE_NUMBERS
4051 static struct stat input_stat;
4052 #endif
4053 static int input_stat_set;
4055 /* The compiler used to process the current input file. */
4056 static struct compiler *input_file_compiler;
4058 /* These are variables used within do_spec and do_spec_1. */
4060 /* Nonzero if an arg has been started and not yet terminated
4061 (with space, tab or newline). */
4062 static int arg_going;
4064 /* Nonzero means %d or %g has been seen; the next arg to be terminated
4065 is a temporary file name. */
4066 static int delete_this_arg;
4068 /* Nonzero means %w has been seen; the next arg to be terminated
4069 is the output file name of this compilation. */
4070 static int this_is_output_file;
4072 /* Nonzero means %s has been seen; the next arg to be terminated
4073 is the name of a library file and we should try the standard
4074 search dirs for it. */
4075 static int this_is_library_file;
4077 /* Nonzero means %T has been seen; the next arg to be terminated
4078 is the name of a linker script and we should try all of the
4079 standard search dirs for it. If it is found insert a --script
4080 command line switch and then substitute the full path in place,
4081 otherwise generate an error message. */
4082 static int this_is_linker_script;
4084 /* Nonzero means that the input of this command is coming from a pipe. */
4085 static int input_from_pipe;
4087 /* Nonnull means substitute this for any suffix when outputting a switches
4088 arguments. */
4089 static const char *suffix_subst;
4091 /* If there is an argument being accumulated, terminate it and store it. */
4093 static void
4094 end_going_arg (void)
4096 if (arg_going)
4098 const char *string;
4100 obstack_1grow (&obstack, 0);
4101 string = XOBFINISH (&obstack, const char *);
4102 if (this_is_library_file)
4103 string = find_file (string);
4104 if (this_is_linker_script)
4106 char * full_script_path = find_a_file (&startfile_prefixes, string, R_OK, true);
4108 if (full_script_path == NULL)
4110 error ("unable to locate default linker script %qs in the library search paths", string);
4111 /* Script was not found on search path. */
4112 return;
4114 store_arg ("--script", false, false);
4115 string = full_script_path;
4117 store_arg (string, delete_this_arg, this_is_output_file);
4118 if (this_is_output_file)
4119 outfiles[input_file_number] = string;
4120 arg_going = 0;
4125 /* Parse the WRAPPER string which is a comma separated list of the command line
4126 and insert them into the beginning of argbuf. */
4128 static void
4129 insert_wrapper (const char *wrapper)
4131 int n = 0;
4132 int i;
4133 char *buf = xstrdup (wrapper);
4134 char *p = buf;
4135 unsigned int old_length = VEC_length (const_char_p, argbuf);
4139 n++;
4140 while (*p == ',')
4141 p++;
4143 while ((p = strchr (p, ',')) != NULL);
4145 VEC_safe_grow (const_char_p, heap, argbuf, old_length + n);
4146 memmove (VEC_address (const_char_p, argbuf) + n,
4147 VEC_address (const_char_p, argbuf),
4148 old_length * sizeof (const_char_p));
4150 i = 0;
4151 p = buf;
4154 while (*p == ',')
4156 *p = 0;
4157 p++;
4159 VEC_replace (const_char_p, argbuf, i, p);
4160 i++;
4162 while ((p = strchr (p, ',')) != NULL);
4163 gcc_assert (i == n);
4166 /* Process the spec SPEC and run the commands specified therein.
4167 Returns 0 if the spec is successfully processed; -1 if failed. */
4170 do_spec (const char *spec)
4172 int value;
4174 value = do_spec_2 (spec);
4176 /* Force out any unfinished command.
4177 If -pipe, this forces out the last command if it ended in `|'. */
4178 if (value == 0)
4180 if (VEC_length (const_char_p, argbuf) > 0
4181 && !strcmp (VEC_last (const_char_p, argbuf), "|"))
4182 VEC_pop (const_char_p, argbuf);
4184 set_collect_gcc_options ();
4186 if (VEC_length (const_char_p, argbuf) > 0)
4187 value = execute ();
4190 return value;
4193 static int
4194 do_spec_2 (const char *spec)
4196 int result;
4198 clear_args ();
4199 arg_going = 0;
4200 delete_this_arg = 0;
4201 this_is_output_file = 0;
4202 this_is_library_file = 0;
4203 this_is_linker_script = 0;
4204 input_from_pipe = 0;
4205 suffix_subst = NULL;
4207 result = do_spec_1 (spec, 0, NULL);
4209 end_going_arg ();
4211 return result;
4215 /* Process the given spec string and add any new options to the end
4216 of the switches/n_switches array. */
4218 static void
4219 do_option_spec (const char *name, const char *spec)
4221 unsigned int i, value_count, value_len;
4222 const char *p, *q, *value;
4223 char *tmp_spec, *tmp_spec_p;
4225 if (configure_default_options[0].name == NULL)
4226 return;
4228 for (i = 0; i < ARRAY_SIZE (configure_default_options); i++)
4229 if (strcmp (configure_default_options[i].name, name) == 0)
4230 break;
4231 if (i == ARRAY_SIZE (configure_default_options))
4232 return;
4234 value = configure_default_options[i].value;
4235 value_len = strlen (value);
4237 /* Compute the size of the final spec. */
4238 value_count = 0;
4239 p = spec;
4240 while ((p = strstr (p, "%(VALUE)")) != NULL)
4242 p ++;
4243 value_count ++;
4246 /* Replace each %(VALUE) by the specified value. */
4247 tmp_spec = (char *) alloca (strlen (spec) + 1
4248 + value_count * (value_len - strlen ("%(VALUE)")));
4249 tmp_spec_p = tmp_spec;
4250 q = spec;
4251 while ((p = strstr (q, "%(VALUE)")) != NULL)
4253 memcpy (tmp_spec_p, q, p - q);
4254 tmp_spec_p = tmp_spec_p + (p - q);
4255 memcpy (tmp_spec_p, value, value_len);
4256 tmp_spec_p += value_len;
4257 q = p + strlen ("%(VALUE)");
4259 strcpy (tmp_spec_p, q);
4261 do_self_spec (tmp_spec);
4264 /* Process the given spec string and add any new options to the end
4265 of the switches/n_switches array. */
4267 static void
4268 do_self_spec (const char *spec)
4270 int i;
4272 do_spec_2 (spec);
4273 do_spec_1 (" ", 0, NULL);
4275 /* Mark %<S switches processed by do_self_spec to be ignored permanently.
4276 do_self_specs adds the replacements to switches array, so it shouldn't
4277 be processed afterwards. */
4278 for (i = 0; i < n_switches; i++)
4279 if ((switches[i].live_cond & SWITCH_IGNORE))
4280 switches[i].live_cond |= SWITCH_IGNORE_PERMANENTLY;
4282 if (VEC_length (const_char_p, argbuf) > 0)
4284 const char **argbuf_copy;
4285 struct cl_decoded_option *decoded_options;
4286 struct cl_option_handlers handlers;
4287 unsigned int decoded_options_count;
4288 unsigned int j;
4290 /* Create a copy of argbuf with a dummy argv[0] entry for
4291 decode_cmdline_options_to_array. */
4292 argbuf_copy = XNEWVEC (const char *,
4293 VEC_length (const_char_p, argbuf) + 1);
4294 argbuf_copy[0] = "";
4295 memcpy (argbuf_copy + 1, VEC_address (const_char_p, argbuf),
4296 VEC_length (const_char_p, argbuf) * sizeof (const char *));
4298 decode_cmdline_options_to_array (VEC_length (const_char_p, argbuf) + 1,
4299 argbuf_copy,
4300 CL_DRIVER, &decoded_options,
4301 &decoded_options_count);
4303 set_option_handlers (&handlers);
4305 for (j = 1; j < decoded_options_count; j++)
4307 switch (decoded_options[j].opt_index)
4309 case OPT_SPECIAL_input_file:
4310 /* Specs should only generate options, not input
4311 files. */
4312 if (strcmp (decoded_options[j].arg, "-") != 0)
4313 fatal_error ("switch %qs does not start with %<-%>",
4314 decoded_options[j].arg);
4315 else
4316 fatal_error ("spec-generated switch is just %<-%>");
4317 break;
4319 case OPT_fcompare_debug_second:
4320 case OPT_fcompare_debug:
4321 case OPT_fcompare_debug_:
4322 case OPT_o:
4323 /* Avoid duplicate processing of some options from
4324 compare-debug specs; just save them here. */
4325 save_switch (decoded_options[j].canonical_option[0],
4326 (decoded_options[j].canonical_option_num_elements
4327 - 1),
4328 &decoded_options[j].canonical_option[1], false);
4329 break;
4331 default:
4332 read_cmdline_option (&global_options, &global_options_set,
4333 decoded_options + j, UNKNOWN_LOCATION,
4334 CL_DRIVER, &handlers, global_dc);
4335 break;
4339 alloc_switch ();
4340 switches[n_switches].part1 = 0;
4344 /* Callback for processing %D and %I specs. */
4346 struct spec_path_info {
4347 const char *option;
4348 const char *append;
4349 size_t append_len;
4350 bool omit_relative;
4351 bool separate_options;
4354 static void *
4355 spec_path (char *path, void *data)
4357 struct spec_path_info *info = (struct spec_path_info *) data;
4358 size_t len = 0;
4359 char save = 0;
4361 if (info->omit_relative && !IS_ABSOLUTE_PATH (path))
4362 return NULL;
4364 if (info->append_len != 0)
4366 len = strlen (path);
4367 memcpy (path + len, info->append, info->append_len + 1);
4370 if (!is_directory (path, true))
4371 return NULL;
4373 do_spec_1 (info->option, 1, NULL);
4374 if (info->separate_options)
4375 do_spec_1 (" ", 0, NULL);
4377 if (info->append_len == 0)
4379 len = strlen (path);
4380 save = path[len - 1];
4381 if (IS_DIR_SEPARATOR (path[len - 1]))
4382 path[len - 1] = '\0';
4385 do_spec_1 (path, 1, NULL);
4386 do_spec_1 (" ", 0, NULL);
4388 /* Must not damage the original path. */
4389 if (info->append_len == 0)
4390 path[len - 1] = save;
4392 return NULL;
4395 /* Create a temporary FILE with the contents of ARGV. Add @FILE to the
4396 argument list. */
4398 static void
4399 create_at_file (char **argv)
4401 char *temp_file = make_temp_file ("");
4402 char *at_argument = concat ("@", temp_file, NULL);
4403 FILE *f = fopen (temp_file, "w");
4404 int status;
4406 if (f == NULL)
4407 fatal_error ("could not open temporary response file %s",
4408 temp_file);
4410 status = writeargv (argv, f);
4412 if (status)
4413 fatal_error ("could not write to temporary response file %s",
4414 temp_file);
4416 status = fclose (f);
4418 if (EOF == status)
4419 fatal_error ("could not close temporary response file %s",
4420 temp_file);
4422 store_arg (at_argument, 0, 0);
4424 record_temp_file (temp_file, !save_temps_flag, !save_temps_flag);
4427 /* True if we should compile INFILE. */
4429 static bool
4430 compile_input_file_p (struct infile *infile)
4432 if ((!infile->language) || (infile->language[0] != '*'))
4433 if (infile->incompiler == input_file_compiler)
4434 return true;
4435 return false;
4438 /* Process each member of VEC as a spec. */
4440 static void
4441 do_specs_vec (VEC(char_p,heap) *vec)
4443 unsigned ix;
4444 char *opt;
4446 FOR_EACH_VEC_ELT (char_p, vec, ix, opt)
4448 do_spec_1 (opt, 1, NULL);
4449 /* Make each accumulated option a separate argument. */
4450 do_spec_1 (" ", 0, NULL);
4454 /* Process the sub-spec SPEC as a portion of a larger spec.
4455 This is like processing a whole spec except that we do
4456 not initialize at the beginning and we do not supply a
4457 newline by default at the end.
4458 INSWITCH nonzero means don't process %-sequences in SPEC;
4459 in this case, % is treated as an ordinary character.
4460 This is used while substituting switches.
4461 INSWITCH nonzero also causes SPC not to terminate an argument.
4463 Value is zero unless a line was finished
4464 and the command on that line reported an error. */
4466 static int
4467 do_spec_1 (const char *spec, int inswitch, const char *soft_matched_part)
4469 const char *p = spec;
4470 int c;
4471 int i;
4472 int value;
4474 /* If it's an empty string argument to a switch, keep it as is. */
4475 if (inswitch && !*p)
4476 arg_going = 1;
4478 while ((c = *p++))
4479 /* If substituting a switch, treat all chars like letters.
4480 Otherwise, NL, SPC, TAB and % are special. */
4481 switch (inswitch ? 'a' : c)
4483 case '\n':
4484 end_going_arg ();
4486 if (VEC_length (const_char_p, argbuf) > 0
4487 && !strcmp (VEC_last (const_char_p, argbuf), "|"))
4489 /* A `|' before the newline means use a pipe here,
4490 but only if -pipe was specified.
4491 Otherwise, execute now and don't pass the `|' as an arg. */
4492 if (use_pipes)
4494 input_from_pipe = 1;
4495 break;
4497 else
4498 VEC_pop (const_char_p, argbuf);
4501 set_collect_gcc_options ();
4503 if (VEC_length (const_char_p, argbuf) > 0)
4505 value = execute ();
4506 if (value)
4507 return value;
4509 /* Reinitialize for a new command, and for a new argument. */
4510 clear_args ();
4511 arg_going = 0;
4512 delete_this_arg = 0;
4513 this_is_output_file = 0;
4514 this_is_library_file = 0;
4515 this_is_linker_script = 0;
4516 input_from_pipe = 0;
4517 break;
4519 case '|':
4520 end_going_arg ();
4522 /* Use pipe */
4523 obstack_1grow (&obstack, c);
4524 arg_going = 1;
4525 break;
4527 case '\t':
4528 case ' ':
4529 end_going_arg ();
4531 /* Reinitialize for a new argument. */
4532 delete_this_arg = 0;
4533 this_is_output_file = 0;
4534 this_is_library_file = 0;
4535 this_is_linker_script = 0;
4536 break;
4538 case '%':
4539 switch (c = *p++)
4541 case 0:
4542 fatal_error ("spec %qs invalid", spec);
4544 case 'b':
4545 if (save_temps_length)
4546 obstack_grow (&obstack, save_temps_prefix, save_temps_length);
4547 else
4548 obstack_grow (&obstack, input_basename, basename_length);
4549 if (compare_debug < 0)
4550 obstack_grow (&obstack, ".gk", 3);
4551 arg_going = 1;
4552 break;
4554 case 'B':
4555 if (save_temps_length)
4556 obstack_grow (&obstack, save_temps_prefix, save_temps_length);
4557 else
4558 obstack_grow (&obstack, input_basename, suffixed_basename_length);
4559 if (compare_debug < 0)
4560 obstack_grow (&obstack, ".gk", 3);
4561 arg_going = 1;
4562 break;
4564 case 'd':
4565 delete_this_arg = 2;
4566 break;
4568 /* Dump out the directories specified with LIBRARY_PATH,
4569 followed by the absolute directories
4570 that we search for startfiles. */
4571 case 'D':
4573 struct spec_path_info info;
4575 info.option = "-L";
4576 info.append_len = 0;
4577 #ifdef RELATIVE_PREFIX_NOT_LINKDIR
4578 /* Used on systems which record the specified -L dirs
4579 and use them to search for dynamic linking.
4580 Relative directories always come from -B,
4581 and it is better not to use them for searching
4582 at run time. In particular, stage1 loses. */
4583 info.omit_relative = true;
4584 #else
4585 info.omit_relative = false;
4586 #endif
4587 info.separate_options = false;
4589 for_each_path (&startfile_prefixes, true, 0, spec_path, &info);
4591 break;
4593 case 'e':
4594 /* %efoo means report an error with `foo' as error message
4595 and don't execute any more commands for this file. */
4597 const char *q = p;
4598 char *buf;
4599 while (*p != 0 && *p != '\n')
4600 p++;
4601 buf = (char *) alloca (p - q + 1);
4602 strncpy (buf, q, p - q);
4603 buf[p - q] = 0;
4604 error ("%s", _(buf));
4605 return -1;
4607 break;
4608 case 'n':
4609 /* %nfoo means report a notice with `foo' on stderr. */
4611 const char *q = p;
4612 char *buf;
4613 while (*p != 0 && *p != '\n')
4614 p++;
4615 buf = (char *) alloca (p - q + 1);
4616 strncpy (buf, q, p - q);
4617 buf[p - q] = 0;
4618 inform (0, "%s", _(buf));
4619 if (*p)
4620 p++;
4622 break;
4624 case 'j':
4626 struct stat st;
4628 /* If save_temps_flag is off, and the HOST_BIT_BUCKET is
4629 defined, and it is not a directory, and it is
4630 writable, use it. Otherwise, treat this like any
4631 other temporary file. */
4633 if ((!save_temps_flag)
4634 && (stat (HOST_BIT_BUCKET, &st) == 0) && (!S_ISDIR (st.st_mode))
4635 && (access (HOST_BIT_BUCKET, W_OK) == 0))
4637 obstack_grow (&obstack, HOST_BIT_BUCKET,
4638 strlen (HOST_BIT_BUCKET));
4639 delete_this_arg = 0;
4640 arg_going = 1;
4641 break;
4644 goto create_temp_file;
4645 case '|':
4646 if (use_pipes)
4648 obstack_1grow (&obstack, '-');
4649 delete_this_arg = 0;
4650 arg_going = 1;
4652 /* consume suffix */
4653 while (*p == '.' || ISALNUM ((unsigned char) *p))
4654 p++;
4655 if (p[0] == '%' && p[1] == 'O')
4656 p += 2;
4658 break;
4660 goto create_temp_file;
4661 case 'm':
4662 if (use_pipes)
4664 /* consume suffix */
4665 while (*p == '.' || ISALNUM ((unsigned char) *p))
4666 p++;
4667 if (p[0] == '%' && p[1] == 'O')
4668 p += 2;
4670 break;
4672 goto create_temp_file;
4673 case 'g':
4674 case 'u':
4675 case 'U':
4676 create_temp_file:
4678 struct temp_name *t;
4679 int suffix_length;
4680 const char *suffix = p;
4681 char *saved_suffix = NULL;
4683 while (*p == '.' || ISALNUM ((unsigned char) *p))
4684 p++;
4685 suffix_length = p - suffix;
4686 if (p[0] == '%' && p[1] == 'O')
4688 p += 2;
4689 /* We don't support extra suffix characters after %O. */
4690 if (*p == '.' || ISALNUM ((unsigned char) *p))
4691 fatal_error ("spec %qs has invalid %<%%0%c%>", spec, *p);
4692 if (suffix_length == 0)
4693 suffix = TARGET_OBJECT_SUFFIX;
4694 else
4696 saved_suffix
4697 = XNEWVEC (char, suffix_length
4698 + strlen (TARGET_OBJECT_SUFFIX));
4699 strncpy (saved_suffix, suffix, suffix_length);
4700 strcpy (saved_suffix + suffix_length,
4701 TARGET_OBJECT_SUFFIX);
4703 suffix_length += strlen (TARGET_OBJECT_SUFFIX);
4706 if (compare_debug < 0)
4708 suffix = concat (".gk", suffix, NULL);
4709 suffix_length += 3;
4712 /* If -save-temps=obj and -o were specified, use that for the
4713 temp file. */
4714 if (save_temps_length)
4716 char *tmp;
4717 temp_filename_length
4718 = save_temps_length + suffix_length + 1;
4719 tmp = (char *) alloca (temp_filename_length);
4720 memcpy (tmp, save_temps_prefix, save_temps_length);
4721 memcpy (tmp + save_temps_length, suffix, suffix_length);
4722 tmp[save_temps_length + suffix_length] = '\0';
4723 temp_filename = save_string (tmp,
4724 temp_filename_length + 1);
4725 obstack_grow (&obstack, temp_filename,
4726 temp_filename_length);
4727 arg_going = 1;
4728 delete_this_arg = 0;
4729 break;
4732 /* If the gcc_input_filename has the same suffix specified
4733 for the %g, %u, or %U, and -save-temps is specified,
4734 we could end up using that file as an intermediate
4735 thus clobbering the user's source file (.e.g.,
4736 gcc -save-temps foo.s would clobber foo.s with the
4737 output of cpp0). So check for this condition and
4738 generate a temp file as the intermediate. */
4740 if (save_temps_flag)
4742 char *tmp;
4743 temp_filename_length = basename_length + suffix_length + 1;
4744 tmp = (char *) alloca (temp_filename_length);
4745 memcpy (tmp, input_basename, basename_length);
4746 memcpy (tmp + basename_length, suffix, suffix_length);
4747 tmp[basename_length + suffix_length] = '\0';
4748 temp_filename = tmp;
4750 if (filename_cmp (temp_filename, gcc_input_filename) != 0)
4752 #ifndef HOST_LACKS_INODE_NUMBERS
4753 struct stat st_temp;
4755 /* Note, set_input() resets input_stat_set to 0. */
4756 if (input_stat_set == 0)
4758 input_stat_set = stat (gcc_input_filename,
4759 &input_stat);
4760 if (input_stat_set >= 0)
4761 input_stat_set = 1;
4764 /* If we have the stat for the gcc_input_filename
4765 and we can do the stat for the temp_filename
4766 then the they could still refer to the same
4767 file if st_dev/st_ino's are the same. */
4768 if (input_stat_set != 1
4769 || stat (temp_filename, &st_temp) < 0
4770 || input_stat.st_dev != st_temp.st_dev
4771 || input_stat.st_ino != st_temp.st_ino)
4772 #else
4773 /* Just compare canonical pathnames. */
4774 char* input_realname = lrealpath (gcc_input_filename);
4775 char* temp_realname = lrealpath (temp_filename);
4776 bool files_differ = filename_cmp (input_realname, temp_realname);
4777 free (input_realname);
4778 free (temp_realname);
4779 if (files_differ)
4780 #endif
4782 temp_filename = save_string (temp_filename,
4783 temp_filename_length + 1);
4784 obstack_grow (&obstack, temp_filename,
4785 temp_filename_length);
4786 arg_going = 1;
4787 delete_this_arg = 0;
4788 break;
4793 /* See if we already have an association of %g/%u/%U and
4794 suffix. */
4795 for (t = temp_names; t; t = t->next)
4796 if (t->length == suffix_length
4797 && strncmp (t->suffix, suffix, suffix_length) == 0
4798 && t->unique == (c == 'u' || c == 'U' || c == 'j'))
4799 break;
4801 /* Make a new association if needed. %u and %j
4802 require one. */
4803 if (t == 0 || c == 'u' || c == 'j')
4805 if (t == 0)
4807 t = XNEW (struct temp_name);
4808 t->next = temp_names;
4809 temp_names = t;
4811 t->length = suffix_length;
4812 if (saved_suffix)
4814 t->suffix = saved_suffix;
4815 saved_suffix = NULL;
4817 else
4818 t->suffix = save_string (suffix, suffix_length);
4819 t->unique = (c == 'u' || c == 'U' || c == 'j');
4820 temp_filename = make_temp_file (t->suffix);
4821 temp_filename_length = strlen (temp_filename);
4822 t->filename = temp_filename;
4823 t->filename_length = temp_filename_length;
4826 free (saved_suffix);
4828 obstack_grow (&obstack, t->filename, t->filename_length);
4829 delete_this_arg = 1;
4831 arg_going = 1;
4832 break;
4834 case 'i':
4835 if (combine_inputs)
4837 if (at_file_supplied)
4839 /* We are going to expand `%i' to `@FILE', where FILE
4840 is a newly-created temporary filename. The filenames
4841 that would usually be expanded in place of %o will be
4842 written to the temporary file. */
4843 char **argv;
4844 int n_files = 0;
4845 int j;
4847 for (i = 0; i < n_infiles; i++)
4848 if (compile_input_file_p (&infiles[i]))
4849 n_files++;
4851 argv = (char **) alloca (sizeof (char *) * (n_files + 1));
4853 /* Copy the strings over. */
4854 for (i = 0, j = 0; i < n_infiles; i++)
4855 if (compile_input_file_p (&infiles[i]))
4857 argv[j] = CONST_CAST (char *, infiles[i].name);
4858 infiles[i].compiled = true;
4859 j++;
4861 argv[j] = NULL;
4863 create_at_file (argv);
4865 else
4866 for (i = 0; (int) i < n_infiles; i++)
4867 if (compile_input_file_p (&infiles[i]))
4869 store_arg (infiles[i].name, 0, 0);
4870 infiles[i].compiled = true;
4873 else
4875 obstack_grow (&obstack, gcc_input_filename,
4876 input_filename_length);
4877 arg_going = 1;
4879 break;
4881 case 'I':
4883 struct spec_path_info info;
4885 if (multilib_dir)
4887 do_spec_1 ("-imultilib", 1, NULL);
4888 /* Make this a separate argument. */
4889 do_spec_1 (" ", 0, NULL);
4890 do_spec_1 (multilib_dir, 1, NULL);
4891 do_spec_1 (" ", 0, NULL);
4894 if (gcc_exec_prefix)
4896 do_spec_1 ("-iprefix", 1, NULL);
4897 /* Make this a separate argument. */
4898 do_spec_1 (" ", 0, NULL);
4899 do_spec_1 (gcc_exec_prefix, 1, NULL);
4900 do_spec_1 (" ", 0, NULL);
4903 if (target_system_root_changed ||
4904 (target_system_root && target_sysroot_hdrs_suffix))
4906 do_spec_1 ("-isysroot", 1, NULL);
4907 /* Make this a separate argument. */
4908 do_spec_1 (" ", 0, NULL);
4909 do_spec_1 (target_system_root, 1, NULL);
4910 if (target_sysroot_hdrs_suffix)
4911 do_spec_1 (target_sysroot_hdrs_suffix, 1, NULL);
4912 do_spec_1 (" ", 0, NULL);
4915 info.option = "-isystem";
4916 info.append = "include";
4917 info.append_len = strlen (info.append);
4918 info.omit_relative = false;
4919 info.separate_options = true;
4921 for_each_path (&include_prefixes, false, info.append_len,
4922 spec_path, &info);
4924 info.append = "include-fixed";
4925 if (*sysroot_hdrs_suffix_spec)
4926 info.append = concat (info.append, dir_separator_str,
4927 multilib_dir, NULL);
4928 info.append_len = strlen (info.append);
4929 for_each_path (&include_prefixes, false, info.append_len,
4930 spec_path, &info);
4932 break;
4934 case 'o':
4936 int max = n_infiles;
4937 max += lang_specific_extra_outfiles;
4939 if (HAVE_GNU_LD && at_file_supplied)
4941 /* We are going to expand `%o' to `@FILE', where FILE
4942 is a newly-created temporary filename. The filenames
4943 that would usually be expanded in place of %o will be
4944 written to the temporary file. */
4946 char **argv;
4947 int n_files, j;
4949 /* Convert OUTFILES into a form suitable for writeargv. */
4951 /* Determine how many are non-NULL. */
4952 for (n_files = 0, i = 0; i < max; i++)
4953 n_files += outfiles[i] != NULL;
4955 argv = (char **) alloca (sizeof (char *) * (n_files + 1));
4957 /* Copy the strings over. */
4958 for (i = 0, j = 0; i < max; i++)
4959 if (outfiles[i])
4961 argv[j] = CONST_CAST (char *, outfiles[i]);
4962 j++;
4964 argv[j] = NULL;
4966 create_at_file (argv);
4968 else
4969 for (i = 0; i < max; i++)
4970 if (outfiles[i])
4971 store_arg (outfiles[i], 0, 0);
4972 break;
4975 case 'O':
4976 obstack_grow (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX));
4977 arg_going = 1;
4978 break;
4980 case 's':
4981 this_is_library_file = 1;
4982 break;
4984 case 'T':
4985 this_is_linker_script = 1;
4986 break;
4988 case 'V':
4989 outfiles[input_file_number] = NULL;
4990 break;
4992 case 'w':
4993 this_is_output_file = 1;
4994 break;
4996 case 'W':
4998 unsigned int cur_index = VEC_length (const_char_p, argbuf);
4999 /* Handle the {...} following the %W. */
5000 if (*p != '{')
5001 fatal_error ("spec %qs has invalid %<%%W%c%>", spec, *p);
5002 p = handle_braces (p + 1);
5003 if (p == 0)
5004 return -1;
5005 end_going_arg ();
5006 /* If any args were output, mark the last one for deletion
5007 on failure. */
5008 if (VEC_length (const_char_p, argbuf) != cur_index)
5009 record_temp_file (VEC_last (const_char_p, argbuf), 0, 1);
5010 break;
5013 /* %x{OPTION} records OPTION for %X to output. */
5014 case 'x':
5016 const char *p1 = p;
5017 char *string;
5018 char *opt;
5019 unsigned ix;
5021 /* Skip past the option value and make a copy. */
5022 if (*p != '{')
5023 fatal_error ("spec %qs has invalid %<%%x%c%>", spec, *p);
5024 while (*p++ != '}')
5026 string = save_string (p1 + 1, p - p1 - 2);
5028 /* See if we already recorded this option. */
5029 FOR_EACH_VEC_ELT (char_p, linker_options, ix, opt)
5030 if (! strcmp (string, opt))
5032 free (string);
5033 return 0;
5036 /* This option is new; add it. */
5037 add_linker_option (string, strlen (string));
5039 break;
5041 /* Dump out the options accumulated previously using %x. */
5042 case 'X':
5043 do_specs_vec (linker_options);
5044 break;
5046 /* Dump out the options accumulated previously using -Wa,. */
5047 case 'Y':
5048 do_specs_vec (assembler_options);
5049 break;
5051 /* Dump out the options accumulated previously using -Wp,. */
5052 case 'Z':
5053 do_specs_vec (preprocessor_options);
5054 break;
5056 /* Here are digits and numbers that just process
5057 a certain constant string as a spec. */
5059 case '1':
5060 value = do_spec_1 (cc1_spec, 0, NULL);
5061 if (value != 0)
5062 return value;
5063 break;
5065 case '2':
5066 value = do_spec_1 (cc1plus_spec, 0, NULL);
5067 if (value != 0)
5068 return value;
5069 break;
5071 case 'a':
5072 value = do_spec_1 (asm_spec, 0, NULL);
5073 if (value != 0)
5074 return value;
5075 break;
5077 case 'A':
5078 value = do_spec_1 (asm_final_spec, 0, NULL);
5079 if (value != 0)
5080 return value;
5081 break;
5083 case 'C':
5085 const char *const spec
5086 = (input_file_compiler->cpp_spec
5087 ? input_file_compiler->cpp_spec
5088 : cpp_spec);
5089 value = do_spec_1 (spec, 0, NULL);
5090 if (value != 0)
5091 return value;
5093 break;
5095 case 'E':
5096 value = do_spec_1 (endfile_spec, 0, NULL);
5097 if (value != 0)
5098 return value;
5099 break;
5101 case 'l':
5102 value = do_spec_1 (link_spec, 0, NULL);
5103 if (value != 0)
5104 return value;
5105 break;
5107 case 'L':
5108 value = do_spec_1 (lib_spec, 0, NULL);
5109 if (value != 0)
5110 return value;
5111 break;
5113 case 'G':
5114 value = do_spec_1 (libgcc_spec, 0, NULL);
5115 if (value != 0)
5116 return value;
5117 break;
5119 case 'R':
5120 /* We assume there is a directory
5121 separator at the end of this string. */
5122 if (target_system_root)
5124 obstack_grow (&obstack, target_system_root,
5125 strlen (target_system_root));
5126 if (target_sysroot_suffix)
5127 obstack_grow (&obstack, target_sysroot_suffix,
5128 strlen (target_sysroot_suffix));
5130 break;
5132 case 'S':
5133 value = do_spec_1 (startfile_spec, 0, NULL);
5134 if (value != 0)
5135 return value;
5136 break;
5138 /* Here we define characters other than letters and digits. */
5140 case '{':
5141 p = handle_braces (p);
5142 if (p == 0)
5143 return -1;
5144 break;
5146 case ':':
5147 p = handle_spec_function (p);
5148 if (p == 0)
5149 return -1;
5150 break;
5152 case '%':
5153 obstack_1grow (&obstack, '%');
5154 break;
5156 case '.':
5158 unsigned len = 0;
5160 while (p[len] && p[len] != ' ' && p[len] != '%')
5161 len++;
5162 suffix_subst = save_string (p - 1, len + 1);
5163 p += len;
5165 break;
5167 /* Henceforth ignore the option(s) matching the pattern
5168 after the %<. */
5169 case '<':
5170 case '>':
5172 unsigned len = 0;
5173 int have_wildcard = 0;
5174 int i;
5175 int switch_option;
5177 if (c == '>')
5178 switch_option = SWITCH_IGNORE | SWITCH_KEEP_FOR_GCC;
5179 else
5180 switch_option = SWITCH_IGNORE;
5182 while (p[len] && p[len] != ' ' && p[len] != '\t')
5183 len++;
5185 if (p[len-1] == '*')
5186 have_wildcard = 1;
5188 for (i = 0; i < n_switches; i++)
5189 if (!strncmp (switches[i].part1, p, len - have_wildcard)
5190 && (have_wildcard || switches[i].part1[len] == '\0'))
5192 switches[i].live_cond |= switch_option;
5193 switches[i].validated = 1;
5196 p += len;
5198 break;
5200 case '*':
5201 if (soft_matched_part)
5203 if (soft_matched_part[0])
5204 do_spec_1 (soft_matched_part, 1, NULL);
5205 do_spec_1 (" ", 0, NULL);
5207 else
5208 /* Catch the case where a spec string contains something like
5209 '%{foo:%*}'. i.e. there is no * in the pattern on the left
5210 hand side of the :. */
5211 error ("spec failure: %<%%*%> has not been initialized by pattern match");
5212 break;
5214 /* Process a string found as the value of a spec given by name.
5215 This feature allows individual machine descriptions
5216 to add and use their own specs. */
5217 case '(':
5219 const char *name = p;
5220 struct spec_list *sl;
5221 int len;
5223 /* The string after the S/P is the name of a spec that is to be
5224 processed. */
5225 while (*p && *p != ')')
5226 p++;
5228 /* See if it's in the list. */
5229 for (len = p - name, sl = specs; sl; sl = sl->next)
5230 if (sl->name_len == len && !strncmp (sl->name, name, len))
5232 name = *(sl->ptr_spec);
5233 #ifdef DEBUG_SPECS
5234 fnotice (stderr, "Processing spec (%s), which is '%s'\n",
5235 sl->name, name);
5236 #endif
5237 break;
5240 if (sl)
5242 value = do_spec_1 (name, 0, NULL);
5243 if (value != 0)
5244 return value;
5247 /* Discard the closing paren. */
5248 if (*p)
5249 p++;
5251 break;
5253 default:
5254 error ("spec failure: unrecognized spec option %qc", c);
5255 break;
5257 break;
5259 case '\\':
5260 /* Backslash: treat next character as ordinary. */
5261 c = *p++;
5263 /* Fall through. */
5264 default:
5265 /* Ordinary character: put it into the current argument. */
5266 obstack_1grow (&obstack, c);
5267 arg_going = 1;
5270 /* End of string. If we are processing a spec function, we need to
5271 end any pending argument. */
5272 if (processing_spec_function)
5273 end_going_arg ();
5275 return 0;
5278 /* Look up a spec function. */
5280 static const struct spec_function *
5281 lookup_spec_function (const char *name)
5283 const struct spec_function *sf;
5285 for (sf = static_spec_functions; sf->name != NULL; sf++)
5286 if (strcmp (sf->name, name) == 0)
5287 return sf;
5289 return NULL;
5292 /* Evaluate a spec function. */
5294 static const char *
5295 eval_spec_function (const char *func, const char *args)
5297 const struct spec_function *sf;
5298 const char *funcval;
5300 /* Saved spec processing context. */
5301 VEC(const_char_p,heap) *save_argbuf;
5303 int save_arg_going;
5304 int save_delete_this_arg;
5305 int save_this_is_output_file;
5306 int save_this_is_library_file;
5307 int save_input_from_pipe;
5308 int save_this_is_linker_script;
5309 const char *save_suffix_subst;
5312 sf = lookup_spec_function (func);
5313 if (sf == NULL)
5314 fatal_error ("unknown spec function %qs", func);
5316 /* Push the spec processing context. */
5317 save_argbuf = argbuf;
5319 save_arg_going = arg_going;
5320 save_delete_this_arg = delete_this_arg;
5321 save_this_is_output_file = this_is_output_file;
5322 save_this_is_library_file = this_is_library_file;
5323 save_this_is_linker_script = this_is_linker_script;
5324 save_input_from_pipe = input_from_pipe;
5325 save_suffix_subst = suffix_subst;
5327 /* Create a new spec processing context, and build the function
5328 arguments. */
5330 alloc_args ();
5331 if (do_spec_2 (args) < 0)
5332 fatal_error ("error in args to spec function %qs", func);
5334 /* argbuf_index is an index for the next argument to be inserted, and
5335 so contains the count of the args already inserted. */
5337 funcval = (*sf->func) (VEC_length (const_char_p, argbuf),
5338 VEC_address (const_char_p, argbuf));
5340 /* Pop the spec processing context. */
5341 VEC_free (const_char_p, heap, argbuf);
5342 argbuf = save_argbuf;
5344 arg_going = save_arg_going;
5345 delete_this_arg = save_delete_this_arg;
5346 this_is_output_file = save_this_is_output_file;
5347 this_is_library_file = save_this_is_library_file;
5348 this_is_linker_script = save_this_is_linker_script;
5349 input_from_pipe = save_input_from_pipe;
5350 suffix_subst = save_suffix_subst;
5352 return funcval;
5355 /* Handle a spec function call of the form:
5357 %:function(args)
5359 ARGS is processed as a spec in a separate context and split into an
5360 argument vector in the normal fashion. The function returns a string
5361 containing a spec which we then process in the caller's context, or
5362 NULL if no processing is required. */
5364 static const char *
5365 handle_spec_function (const char *p)
5367 char *func, *args;
5368 const char *endp, *funcval;
5369 int count;
5371 processing_spec_function++;
5373 /* Get the function name. */
5374 for (endp = p; *endp != '\0'; endp++)
5376 if (*endp == '(') /* ) */
5377 break;
5378 /* Only allow [A-Za-z0-9], -, and _ in function names. */
5379 if (!ISALNUM (*endp) && !(*endp == '-' || *endp == '_'))
5380 fatal_error ("malformed spec function name");
5382 if (*endp != '(') /* ) */
5383 fatal_error ("no arguments for spec function");
5384 func = save_string (p, endp - p);
5385 p = ++endp;
5387 /* Get the arguments. */
5388 for (count = 0; *endp != '\0'; endp++)
5390 /* ( */
5391 if (*endp == ')')
5393 if (count == 0)
5394 break;
5395 count--;
5397 else if (*endp == '(') /* ) */
5398 count++;
5400 /* ( */
5401 if (*endp != ')')
5402 fatal_error ("malformed spec function arguments");
5403 args = save_string (p, endp - p);
5404 p = ++endp;
5406 /* p now points to just past the end of the spec function expression. */
5408 funcval = eval_spec_function (func, args);
5409 if (funcval != NULL && do_spec_1 (funcval, 0, NULL) < 0)
5410 p = NULL;
5412 free (func);
5413 free (args);
5415 processing_spec_function--;
5417 return p;
5420 /* Inline subroutine of handle_braces. Returns true if the current
5421 input suffix matches the atom bracketed by ATOM and END_ATOM. */
5422 static inline bool
5423 input_suffix_matches (const char *atom, const char *end_atom)
5425 return (input_suffix
5426 && !strncmp (input_suffix, atom, end_atom - atom)
5427 && input_suffix[end_atom - atom] == '\0');
5430 /* Subroutine of handle_braces. Returns true if the current
5431 input file's spec name matches the atom bracketed by ATOM and END_ATOM. */
5432 static bool
5433 input_spec_matches (const char *atom, const char *end_atom)
5435 return (input_file_compiler
5436 && input_file_compiler->suffix
5437 && input_file_compiler->suffix[0] != '\0'
5438 && !strncmp (input_file_compiler->suffix + 1, atom,
5439 end_atom - atom)
5440 && input_file_compiler->suffix[end_atom - atom + 1] == '\0');
5443 /* Subroutine of handle_braces. Returns true if a switch
5444 matching the atom bracketed by ATOM and END_ATOM appeared on the
5445 command line. */
5446 static bool
5447 switch_matches (const char *atom, const char *end_atom, int starred)
5449 int i;
5450 int len = end_atom - atom;
5451 int plen = starred ? len : -1;
5453 for (i = 0; i < n_switches; i++)
5454 if (!strncmp (switches[i].part1, atom, len)
5455 && (starred || switches[i].part1[len] == '\0')
5456 && check_live_switch (i, plen))
5457 return true;
5459 return false;
5462 /* Inline subroutine of handle_braces. Mark all of the switches which
5463 match ATOM (extends to END_ATOM; STARRED indicates whether there
5464 was a star after the atom) for later processing. */
5465 static inline void
5466 mark_matching_switches (const char *atom, const char *end_atom, int starred)
5468 int i;
5469 int len = end_atom - atom;
5470 int plen = starred ? len : -1;
5472 for (i = 0; i < n_switches; i++)
5473 if (!strncmp (switches[i].part1, atom, len)
5474 && (starred || switches[i].part1[len] == '\0')
5475 && check_live_switch (i, plen))
5476 switches[i].ordering = 1;
5479 /* Inline subroutine of handle_braces. Process all the currently
5480 marked switches through give_switch, and clear the marks. */
5481 static inline void
5482 process_marked_switches (void)
5484 int i;
5486 for (i = 0; i < n_switches; i++)
5487 if (switches[i].ordering == 1)
5489 switches[i].ordering = 0;
5490 give_switch (i, 0);
5494 /* Handle a %{ ... } construct. P points just inside the leading {.
5495 Returns a pointer one past the end of the brace block, or 0
5496 if we call do_spec_1 and that returns -1. */
5498 static const char *
5499 handle_braces (const char *p)
5501 const char *atom, *end_atom;
5502 const char *d_atom = NULL, *d_end_atom = NULL;
5503 const char *orig = p;
5505 bool a_is_suffix;
5506 bool a_is_spectype;
5507 bool a_is_starred;
5508 bool a_is_negated;
5509 bool a_matched;
5511 bool a_must_be_last = false;
5512 bool ordered_set = false;
5513 bool disjunct_set = false;
5514 bool disj_matched = false;
5515 bool disj_starred = true;
5516 bool n_way_choice = false;
5517 bool n_way_matched = false;
5519 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
5523 if (a_must_be_last)
5524 goto invalid;
5526 /* Scan one "atom" (S in the description above of %{}, possibly
5527 with '!', '.', '@', ',', or '*' modifiers). */
5528 a_matched = false;
5529 a_is_suffix = false;
5530 a_is_starred = false;
5531 a_is_negated = false;
5532 a_is_spectype = false;
5534 SKIP_WHITE();
5535 if (*p == '!')
5536 p++, a_is_negated = true;
5538 SKIP_WHITE();
5539 if (*p == '.')
5540 p++, a_is_suffix = true;
5541 else if (*p == ',')
5542 p++, a_is_spectype = true;
5544 atom = p;
5545 while (ISIDNUM(*p) || *p == '-' || *p == '+' || *p == '='
5546 || *p == ',' || *p == '.' || *p == '@')
5547 p++;
5548 end_atom = p;
5550 if (*p == '*')
5551 p++, a_is_starred = 1;
5553 SKIP_WHITE();
5554 switch (*p)
5556 case '&': case '}':
5557 /* Substitute the switch(es) indicated by the current atom. */
5558 ordered_set = true;
5559 if (disjunct_set || n_way_choice || a_is_negated || a_is_suffix
5560 || a_is_spectype || atom == end_atom)
5561 goto invalid;
5563 mark_matching_switches (atom, end_atom, a_is_starred);
5565 if (*p == '}')
5566 process_marked_switches ();
5567 break;
5569 case '|': case ':':
5570 /* Substitute some text if the current atom appears as a switch
5571 or suffix. */
5572 disjunct_set = true;
5573 if (ordered_set)
5574 goto invalid;
5576 if (atom == end_atom)
5578 if (!n_way_choice || disj_matched || *p == '|'
5579 || a_is_negated || a_is_suffix || a_is_spectype
5580 || a_is_starred)
5581 goto invalid;
5583 /* An empty term may appear as the last choice of an
5584 N-way choice set; it means "otherwise". */
5585 a_must_be_last = true;
5586 disj_matched = !n_way_matched;
5587 disj_starred = false;
5589 else
5591 if ((a_is_suffix || a_is_spectype) && a_is_starred)
5592 goto invalid;
5594 if (!a_is_starred)
5595 disj_starred = false;
5597 /* Don't bother testing this atom if we already have a
5598 match. */
5599 if (!disj_matched && !n_way_matched)
5601 if (a_is_suffix)
5602 a_matched = input_suffix_matches (atom, end_atom);
5603 else if (a_is_spectype)
5604 a_matched = input_spec_matches (atom, end_atom);
5605 else
5606 a_matched = switch_matches (atom, end_atom, a_is_starred);
5608 if (a_matched != a_is_negated)
5610 disj_matched = true;
5611 d_atom = atom;
5612 d_end_atom = end_atom;
5617 if (*p == ':')
5619 /* Found the body, that is, the text to substitute if the
5620 current disjunction matches. */
5621 p = process_brace_body (p + 1, d_atom, d_end_atom, disj_starred,
5622 disj_matched && !n_way_matched);
5623 if (p == 0)
5624 return 0;
5626 /* If we have an N-way choice, reset state for the next
5627 disjunction. */
5628 if (*p == ';')
5630 n_way_choice = true;
5631 n_way_matched |= disj_matched;
5632 disj_matched = false;
5633 disj_starred = true;
5634 d_atom = d_end_atom = NULL;
5637 break;
5639 default:
5640 goto invalid;
5643 while (*p++ != '}');
5645 return p;
5647 invalid:
5648 fatal_error ("braced spec %qs is invalid at %qc", orig, *p);
5650 #undef SKIP_WHITE
5653 /* Subroutine of handle_braces. Scan and process a brace substitution body
5654 (X in the description of %{} syntax). P points one past the colon;
5655 ATOM and END_ATOM bracket the first atom which was found to be true
5656 (present) in the current disjunction; STARRED indicates whether all
5657 the atoms in the current disjunction were starred (for syntax validation);
5658 MATCHED indicates whether the disjunction matched or not, and therefore
5659 whether or not the body is to be processed through do_spec_1 or just
5660 skipped. Returns a pointer to the closing } or ;, or 0 if do_spec_1
5661 returns -1. */
5663 static const char *
5664 process_brace_body (const char *p, const char *atom, const char *end_atom,
5665 int starred, int matched)
5667 const char *body, *end_body;
5668 unsigned int nesting_level;
5669 bool have_subst = false;
5671 /* Locate the closing } or ;, honoring nested braces.
5672 Trim trailing whitespace. */
5673 body = p;
5674 nesting_level = 1;
5675 for (;;)
5677 if (*p == '{')
5678 nesting_level++;
5679 else if (*p == '}')
5681 if (!--nesting_level)
5682 break;
5684 else if (*p == ';' && nesting_level == 1)
5685 break;
5686 else if (*p == '%' && p[1] == '*' && nesting_level == 1)
5687 have_subst = true;
5688 else if (*p == '\0')
5689 goto invalid;
5690 p++;
5693 end_body = p;
5694 while (end_body[-1] == ' ' || end_body[-1] == '\t')
5695 end_body--;
5697 if (have_subst && !starred)
5698 goto invalid;
5700 if (matched)
5702 /* Copy the substitution body to permanent storage and execute it.
5703 If have_subst is false, this is a simple matter of running the
5704 body through do_spec_1... */
5705 char *string = save_string (body, end_body - body);
5706 if (!have_subst)
5708 if (do_spec_1 (string, 0, NULL) < 0)
5709 return 0;
5711 else
5713 /* ... but if have_subst is true, we have to process the
5714 body once for each matching switch, with %* set to the
5715 variant part of the switch. */
5716 unsigned int hard_match_len = end_atom - atom;
5717 int i;
5719 for (i = 0; i < n_switches; i++)
5720 if (!strncmp (switches[i].part1, atom, hard_match_len)
5721 && check_live_switch (i, hard_match_len))
5723 if (do_spec_1 (string, 0,
5724 &switches[i].part1[hard_match_len]) < 0)
5725 return 0;
5726 /* Pass any arguments this switch has. */
5727 give_switch (i, 1);
5728 suffix_subst = NULL;
5733 return p;
5735 invalid:
5736 fatal_error ("braced spec body %qs is invalid", body);
5739 /* Return 0 iff switch number SWITCHNUM is obsoleted by a later switch
5740 on the command line. PREFIX_LENGTH is the length of XXX in an {XXX*}
5741 spec, or -1 if either exact match or %* is used.
5743 A -O switch is obsoleted by a later -O switch. A -f, -m, or -W switch
5744 whose value does not begin with "no-" is obsoleted by the same value
5745 with the "no-", similarly for a switch with the "no-" prefix. */
5747 static int
5748 check_live_switch (int switchnum, int prefix_length)
5750 const char *name = switches[switchnum].part1;
5751 int i;
5753 /* If we already processed this switch and determined if it was
5754 live or not, return our past determination. */
5755 if (switches[switchnum].live_cond != 0)
5756 return ((switches[switchnum].live_cond & SWITCH_LIVE) != 0
5757 && (switches[switchnum].live_cond & SWITCH_FALSE) == 0
5758 && (switches[switchnum].live_cond & SWITCH_IGNORE_PERMANENTLY)
5759 == 0);
5761 /* In the common case of {<at-most-one-letter>*}, a negating
5762 switch would always match, so ignore that case. We will just
5763 send the conflicting switches to the compiler phase. */
5764 if (prefix_length >= 0 && prefix_length <= 1)
5765 return 1;
5767 /* Now search for duplicate in a manner that depends on the name. */
5768 switch (*name)
5770 case 'O':
5771 for (i = switchnum + 1; i < n_switches; i++)
5772 if (switches[i].part1[0] == 'O')
5774 switches[switchnum].validated = 1;
5775 switches[switchnum].live_cond = SWITCH_FALSE;
5776 return 0;
5778 break;
5780 case 'W': case 'f': case 'm':
5781 if (! strncmp (name + 1, "no-", 3))
5783 /* We have Xno-YYY, search for XYYY. */
5784 for (i = switchnum + 1; i < n_switches; i++)
5785 if (switches[i].part1[0] == name[0]
5786 && ! strcmp (&switches[i].part1[1], &name[4]))
5788 switches[switchnum].validated = 1;
5789 switches[switchnum].live_cond = SWITCH_FALSE;
5790 return 0;
5793 else
5795 /* We have XYYY, search for Xno-YYY. */
5796 for (i = switchnum + 1; i < n_switches; i++)
5797 if (switches[i].part1[0] == name[0]
5798 && switches[i].part1[1] == 'n'
5799 && switches[i].part1[2] == 'o'
5800 && switches[i].part1[3] == '-'
5801 && !strcmp (&switches[i].part1[4], &name[1]))
5803 switches[switchnum].validated = 1;
5804 switches[switchnum].live_cond = SWITCH_FALSE;
5805 return 0;
5808 break;
5811 /* Otherwise the switch is live. */
5812 switches[switchnum].live_cond |= SWITCH_LIVE;
5813 return 1;
5816 /* Pass a switch to the current accumulating command
5817 in the same form that we received it.
5818 SWITCHNUM identifies the switch; it is an index into
5819 the vector of switches gcc received, which is `switches'.
5820 This cannot fail since it never finishes a command line.
5822 If OMIT_FIRST_WORD is nonzero, then we omit .part1 of the argument. */
5824 static void
5825 give_switch (int switchnum, int omit_first_word)
5827 if ((switches[switchnum].live_cond & SWITCH_IGNORE) != 0)
5828 return;
5830 if (!omit_first_word)
5832 do_spec_1 ("-", 0, NULL);
5833 do_spec_1 (switches[switchnum].part1, 1, NULL);
5836 if (switches[switchnum].args != 0)
5838 const char **p;
5839 for (p = switches[switchnum].args; *p; p++)
5841 const char *arg = *p;
5843 do_spec_1 (" ", 0, NULL);
5844 if (suffix_subst)
5846 unsigned length = strlen (arg);
5847 int dot = 0;
5849 while (length-- && !IS_DIR_SEPARATOR (arg[length]))
5850 if (arg[length] == '.')
5852 (CONST_CAST(char *, arg))[length] = 0;
5853 dot = 1;
5854 break;
5856 do_spec_1 (arg, 1, NULL);
5857 if (dot)
5858 (CONST_CAST(char *, arg))[length] = '.';
5859 do_spec_1 (suffix_subst, 1, NULL);
5861 else
5862 do_spec_1 (arg, 1, NULL);
5866 do_spec_1 (" ", 0, NULL);
5867 switches[switchnum].validated = 1;
5870 /* Search for a file named NAME trying various prefixes including the
5871 user's -B prefix and some standard ones.
5872 Return the absolute file name found. If nothing is found, return NAME. */
5874 static const char *
5875 find_file (const char *name)
5877 char *newname = find_a_file (&startfile_prefixes, name, R_OK, true);
5878 return newname ? newname : name;
5881 /* Determine whether a directory exists. If LINKER, return 0 for
5882 certain fixed names not needed by the linker. */
5884 static int
5885 is_directory (const char *path1, bool linker)
5887 int len1;
5888 char *path;
5889 char *cp;
5890 struct stat st;
5892 /* Ensure the string ends with "/.". The resulting path will be a
5893 directory even if the given path is a symbolic link. */
5894 len1 = strlen (path1);
5895 path = (char *) alloca (3 + len1);
5896 memcpy (path, path1, len1);
5897 cp = path + len1;
5898 if (!IS_DIR_SEPARATOR (cp[-1]))
5899 *cp++ = DIR_SEPARATOR;
5900 *cp++ = '.';
5901 *cp = '\0';
5903 /* Exclude directories that the linker is known to search. */
5904 if (linker
5905 && IS_DIR_SEPARATOR (path[0])
5906 && ((cp - path == 6
5907 && filename_ncmp (path + 1, "lib", 3) == 0)
5908 || (cp - path == 10
5909 && filename_ncmp (path + 1, "usr", 3) == 0
5910 && IS_DIR_SEPARATOR (path[4])
5911 && filename_ncmp (path + 5, "lib", 3) == 0)))
5912 return 0;
5914 return (stat (path, &st) >= 0 && S_ISDIR (st.st_mode));
5917 /* Set up the various global variables to indicate that we're processing
5918 the input file named FILENAME. */
5920 void
5921 set_input (const char *filename)
5923 const char *p;
5925 gcc_input_filename = filename;
5926 input_filename_length = strlen (gcc_input_filename);
5927 input_basename = lbasename (gcc_input_filename);
5929 /* Find a suffix starting with the last period,
5930 and set basename_length to exclude that suffix. */
5931 basename_length = strlen (input_basename);
5932 suffixed_basename_length = basename_length;
5933 p = input_basename + basename_length;
5934 while (p != input_basename && *p != '.')
5935 --p;
5936 if (*p == '.' && p != input_basename)
5938 basename_length = p - input_basename;
5939 input_suffix = p + 1;
5941 else
5942 input_suffix = "";
5944 /* If a spec for 'g', 'u', or 'U' is seen with -save-temps then
5945 we will need to do a stat on the gcc_input_filename. The
5946 INPUT_STAT_SET signals that the stat is needed. */
5947 input_stat_set = 0;
5950 /* On fatal signals, delete all the temporary files. */
5952 static void
5953 fatal_signal (int signum)
5955 signal (signum, SIG_DFL);
5956 delete_failure_queue ();
5957 delete_temp_files ();
5958 /* Get the same signal again, this time not handled,
5959 so its normal effect occurs. */
5960 kill (getpid (), signum);
5963 /* Compare the contents of the two files named CMPFILE[0] and
5964 CMPFILE[1]. Return zero if they're identical, nonzero
5965 otherwise. */
5967 static int
5968 compare_files (char *cmpfile[])
5970 int ret = 0;
5971 FILE *temp[2] = { NULL, NULL };
5972 int i;
5974 #if HAVE_MMAP_FILE
5976 size_t length[2];
5977 void *map[2] = { NULL, NULL };
5979 for (i = 0; i < 2; i++)
5981 struct stat st;
5983 if (stat (cmpfile[i], &st) < 0 || !S_ISREG (st.st_mode))
5985 error ("%s: could not determine length of compare-debug file %s",
5986 gcc_input_filename, cmpfile[i]);
5987 ret = 1;
5988 break;
5991 length[i] = st.st_size;
5994 if (!ret && length[0] != length[1])
5996 error ("%s: -fcompare-debug failure (length)", gcc_input_filename);
5997 ret = 1;
6000 if (!ret)
6001 for (i = 0; i < 2; i++)
6003 int fd = open (cmpfile[i], O_RDONLY);
6004 if (fd < 0)
6006 error ("%s: could not open compare-debug file %s",
6007 gcc_input_filename, cmpfile[i]);
6008 ret = 1;
6009 break;
6012 map[i] = mmap (NULL, length[i], PROT_READ, MAP_PRIVATE, fd, 0);
6013 close (fd);
6015 if (map[i] == (void *) MAP_FAILED)
6017 ret = -1;
6018 break;
6022 if (!ret)
6024 if (memcmp (map[0], map[1], length[0]) != 0)
6026 error ("%s: -fcompare-debug failure", gcc_input_filename);
6027 ret = 1;
6031 for (i = 0; i < 2; i++)
6032 if (map[i])
6033 munmap ((caddr_t) map[i], length[i]);
6035 if (ret >= 0)
6036 return ret;
6038 ret = 0;
6040 #endif
6042 for (i = 0; i < 2; i++)
6044 temp[i] = fopen (cmpfile[i], "r");
6045 if (!temp[i])
6047 error ("%s: could not open compare-debug file %s",
6048 gcc_input_filename, cmpfile[i]);
6049 ret = 1;
6050 break;
6054 if (!ret && temp[0] && temp[1])
6055 for (;;)
6057 int c0, c1;
6058 c0 = fgetc (temp[0]);
6059 c1 = fgetc (temp[1]);
6061 if (c0 != c1)
6063 error ("%s: -fcompare-debug failure",
6064 gcc_input_filename);
6065 ret = 1;
6066 break;
6069 if (c0 == EOF)
6070 break;
6073 for (i = 1; i >= 0; i--)
6075 if (temp[i])
6076 fclose (temp[i]);
6079 return ret;
6082 extern int main (int, char **);
6085 main (int argc, char **argv)
6087 size_t i;
6088 int value;
6089 int linker_was_run = 0;
6090 int lang_n_infiles = 0;
6091 int num_linker_inputs = 0;
6092 char *explicit_link_files;
6093 char *specs_file;
6094 char *lto_wrapper_file;
6095 const char *p;
6096 struct user_specs *uptr;
6097 char **old_argv = argv;
6098 struct cl_decoded_option *decoded_options;
6099 unsigned int decoded_options_count;
6101 /* Initialize here, not in definition. The IRIX 6 O32 cc sometimes chokes
6102 on ?: in file-scope variable initializations. */
6103 asm_debug = ASM_DEBUG_SPEC;
6105 p = argv[0] + strlen (argv[0]);
6106 while (p != argv[0] && !IS_DIR_SEPARATOR (p[-1]))
6107 --p;
6108 progname = p;
6110 xmalloc_set_program_name (progname);
6112 expandargv (&argc, &argv);
6114 /* Determine if any expansions were made. */
6115 if (argv != old_argv)
6116 at_file_supplied = true;
6118 /* Register the language-independent parameters. */
6119 global_init_params ();
6120 finish_params ();
6122 init_options_struct (&global_options, &global_options_set);
6124 decode_cmdline_options_to_array (argc, CONST_CAST2 (const char **, char **,
6125 argv),
6126 CL_DRIVER,
6127 &decoded_options, &decoded_options_count);
6129 #ifdef GCC_DRIVER_HOST_INITIALIZATION
6130 /* Perform host dependent initialization when needed. */
6131 GCC_DRIVER_HOST_INITIALIZATION;
6132 #endif
6134 /* Unlock the stdio streams. */
6135 unlock_std_streams ();
6137 gcc_init_libintl ();
6139 diagnostic_initialize (global_dc, 0);
6140 if (atexit (delete_temp_files) != 0)
6141 fatal_error ("atexit failed");
6143 if (signal (SIGINT, SIG_IGN) != SIG_IGN)
6144 signal (SIGINT, fatal_signal);
6145 #ifdef SIGHUP
6146 if (signal (SIGHUP, SIG_IGN) != SIG_IGN)
6147 signal (SIGHUP, fatal_signal);
6148 #endif
6149 if (signal (SIGTERM, SIG_IGN) != SIG_IGN)
6150 signal (SIGTERM, fatal_signal);
6151 #ifdef SIGPIPE
6152 if (signal (SIGPIPE, SIG_IGN) != SIG_IGN)
6153 signal (SIGPIPE, fatal_signal);
6154 #endif
6155 #ifdef SIGCHLD
6156 /* We *MUST* set SIGCHLD to SIG_DFL so that the wait4() call will
6157 receive the signal. A different setting is inheritable */
6158 signal (SIGCHLD, SIG_DFL);
6159 #endif
6161 /* Parsing and gimplification sometimes need quite large stack.
6162 Increase stack size limits if possible. */
6163 stack_limit_increase (64 * 1024 * 1024);
6165 /* Allocate the argument vector. */
6166 alloc_args ();
6168 obstack_init (&obstack);
6170 /* Build multilib_select, et. al from the separate lines that make up each
6171 multilib selection. */
6173 const char *const *q = multilib_raw;
6174 int need_space;
6176 obstack_init (&multilib_obstack);
6177 while ((p = *q++) != (char *) 0)
6178 obstack_grow (&multilib_obstack, p, strlen (p));
6180 obstack_1grow (&multilib_obstack, 0);
6181 multilib_select = XOBFINISH (&multilib_obstack, const char *);
6183 q = multilib_matches_raw;
6184 while ((p = *q++) != (char *) 0)
6185 obstack_grow (&multilib_obstack, p, strlen (p));
6187 obstack_1grow (&multilib_obstack, 0);
6188 multilib_matches = XOBFINISH (&multilib_obstack, const char *);
6190 q = multilib_exclusions_raw;
6191 while ((p = *q++) != (char *) 0)
6192 obstack_grow (&multilib_obstack, p, strlen (p));
6194 obstack_1grow (&multilib_obstack, 0);
6195 multilib_exclusions = XOBFINISH (&multilib_obstack, const char *);
6197 need_space = FALSE;
6198 for (i = 0; i < ARRAY_SIZE (multilib_defaults_raw); i++)
6200 if (need_space)
6201 obstack_1grow (&multilib_obstack, ' ');
6202 obstack_grow (&multilib_obstack,
6203 multilib_defaults_raw[i],
6204 strlen (multilib_defaults_raw[i]));
6205 need_space = TRUE;
6208 obstack_1grow (&multilib_obstack, 0);
6209 multilib_defaults = XOBFINISH (&multilib_obstack, const char *);
6212 #ifdef INIT_ENVIRONMENT
6213 /* Set up any other necessary machine specific environment variables. */
6214 xputenv (INIT_ENVIRONMENT);
6215 #endif
6217 /* Make a table of what switches there are (switches, n_switches).
6218 Make a table of specified input files (infiles, n_infiles).
6219 Decode switches that are handled locally. */
6221 process_command (decoded_options_count, decoded_options);
6223 /* Initialize the vector of specs to just the default.
6224 This means one element containing 0s, as a terminator. */
6226 compilers = XNEWVAR (struct compiler, sizeof default_compilers);
6227 memcpy (compilers, default_compilers, sizeof default_compilers);
6228 n_compilers = n_default_compilers;
6230 /* Read specs from a file if there is one. */
6232 machine_suffix = concat (spec_machine, dir_separator_str,
6233 spec_version, dir_separator_str, NULL);
6234 just_machine_suffix = concat (spec_machine, dir_separator_str, NULL);
6236 specs_file = find_a_file (&startfile_prefixes, "specs", R_OK, true);
6237 /* Read the specs file unless it is a default one. */
6238 if (specs_file != 0 && strcmp (specs_file, "specs"))
6239 read_specs (specs_file, TRUE);
6240 else
6241 init_spec ();
6243 /* We need to check standard_exec_prefix/just_machine_suffix/specs
6244 for any override of as, ld and libraries. */
6245 specs_file = (char *) alloca (strlen (standard_exec_prefix)
6246 + strlen (just_machine_suffix) + sizeof ("specs"));
6248 strcpy (specs_file, standard_exec_prefix);
6249 strcat (specs_file, just_machine_suffix);
6250 strcat (specs_file, "specs");
6251 if (access (specs_file, R_OK) == 0)
6252 read_specs (specs_file, TRUE);
6254 /* Process any configure-time defaults specified for the command line
6255 options, via OPTION_DEFAULT_SPECS. */
6256 for (i = 0; i < ARRAY_SIZE (option_default_specs); i++)
6257 do_option_spec (option_default_specs[i].name,
6258 option_default_specs[i].spec);
6260 /* Process DRIVER_SELF_SPECS, adding any new options to the end
6261 of the command line. */
6263 for (i = 0; i < ARRAY_SIZE (driver_self_specs); i++)
6264 do_self_spec (driver_self_specs[i]);
6266 /* If not cross-compiling, look for executables in the standard
6267 places. */
6268 if (*cross_compile == '0')
6270 if (*md_exec_prefix)
6272 add_prefix (&exec_prefixes, md_exec_prefix, "GCC",
6273 PREFIX_PRIORITY_LAST, 0, 0);
6277 /* Process sysroot_suffix_spec. */
6278 if (*sysroot_suffix_spec != 0
6279 && do_spec_2 (sysroot_suffix_spec) == 0)
6281 if (VEC_length (const_char_p, argbuf) > 1)
6282 error ("spec failure: more than one arg to SYSROOT_SUFFIX_SPEC");
6283 else if (VEC_length (const_char_p, argbuf) == 1)
6284 target_sysroot_suffix = xstrdup (VEC_last (const_char_p, argbuf));
6287 #ifdef HAVE_LD_SYSROOT
6288 /* Pass the --sysroot option to the linker, if it supports that. If
6289 there is a sysroot_suffix_spec, it has already been processed by
6290 this point, so target_system_root really is the system root we
6291 should be using. */
6292 if (target_system_root)
6294 obstack_grow (&obstack, "%(sysroot_spec) ", strlen ("%(sysroot_spec) "));
6295 obstack_grow0 (&obstack, link_spec, strlen (link_spec));
6296 set_spec ("link", XOBFINISH (&obstack, const char *));
6298 #endif
6300 /* Process sysroot_hdrs_suffix_spec. */
6301 if (*sysroot_hdrs_suffix_spec != 0
6302 && do_spec_2 (sysroot_hdrs_suffix_spec) == 0)
6304 if (VEC_length (const_char_p, argbuf) > 1)
6305 error ("spec failure: more than one arg to SYSROOT_HEADERS_SUFFIX_SPEC");
6306 else if (VEC_length (const_char_p, argbuf) == 1)
6307 target_sysroot_hdrs_suffix = xstrdup (VEC_last (const_char_p, argbuf));
6310 /* Look for startfiles in the standard places. */
6311 if (*startfile_prefix_spec != 0
6312 && do_spec_2 (startfile_prefix_spec) == 0
6313 && do_spec_1 (" ", 0, NULL) == 0)
6315 const char *arg;
6316 int ndx;
6317 FOR_EACH_VEC_ELT (const_char_p, argbuf, ndx, arg)
6318 add_sysrooted_prefix (&startfile_prefixes, arg, "BINUTILS",
6319 PREFIX_PRIORITY_LAST, 0, 1);
6321 /* We should eventually get rid of all these and stick to
6322 startfile_prefix_spec exclusively. */
6323 else if (*cross_compile == '0' || target_system_root)
6325 if (*md_startfile_prefix)
6326 add_sysrooted_prefix (&startfile_prefixes, md_startfile_prefix,
6327 "GCC", PREFIX_PRIORITY_LAST, 0, 1);
6329 if (*md_startfile_prefix_1)
6330 add_sysrooted_prefix (&startfile_prefixes, md_startfile_prefix_1,
6331 "GCC", PREFIX_PRIORITY_LAST, 0, 1);
6333 /* If standard_startfile_prefix is relative, base it on
6334 standard_exec_prefix. This lets us move the installed tree
6335 as a unit. If GCC_EXEC_PREFIX is defined, base
6336 standard_startfile_prefix on that as well.
6338 If the prefix is relative, only search it for native compilers;
6339 otherwise we will search a directory containing host libraries. */
6340 if (IS_ABSOLUTE_PATH (standard_startfile_prefix))
6341 add_sysrooted_prefix (&startfile_prefixes,
6342 standard_startfile_prefix, "BINUTILS",
6343 PREFIX_PRIORITY_LAST, 0, 1);
6344 else if (*cross_compile == '0')
6346 add_prefix (&startfile_prefixes,
6347 concat (gcc_exec_prefix
6348 ? gcc_exec_prefix : standard_exec_prefix,
6349 machine_suffix,
6350 standard_startfile_prefix, NULL),
6351 NULL, PREFIX_PRIORITY_LAST, 0, 1);
6354 /* Sysrooted prefixes are relocated because target_system_root is
6355 also relocated by gcc_exec_prefix. */
6356 if (*standard_startfile_prefix_1)
6357 add_sysrooted_prefix (&startfile_prefixes,
6358 standard_startfile_prefix_1, "BINUTILS",
6359 PREFIX_PRIORITY_LAST, 0, 1);
6360 if (*standard_startfile_prefix_2)
6361 add_sysrooted_prefix (&startfile_prefixes,
6362 standard_startfile_prefix_2, "BINUTILS",
6363 PREFIX_PRIORITY_LAST, 0, 1);
6366 /* Process any user specified specs in the order given on the command
6367 line. */
6368 for (uptr = user_specs_head; uptr; uptr = uptr->next)
6370 char *filename = find_a_file (&startfile_prefixes, uptr->filename,
6371 R_OK, true);
6372 read_specs (filename ? filename : uptr->filename, FALSE);
6375 /* Process any user self specs. */
6377 struct spec_list *sl;
6378 for (sl = specs; sl; sl = sl->next)
6379 if (sl->name_len == sizeof "self_spec" - 1
6380 && !strcmp (sl->name, "self_spec"))
6381 do_self_spec (*sl->ptr_spec);
6384 if (compare_debug)
6386 enum save_temps save;
6388 if (!compare_debug_second)
6390 n_switches_debug_check[1] = n_switches;
6391 n_switches_alloc_debug_check[1] = n_switches_alloc;
6392 switches_debug_check[1] = XDUPVEC (struct switchstr, switches,
6393 n_switches_alloc);
6395 do_self_spec ("%:compare-debug-self-opt()");
6396 n_switches_debug_check[0] = n_switches;
6397 n_switches_alloc_debug_check[0] = n_switches_alloc;
6398 switches_debug_check[0] = switches;
6400 n_switches = n_switches_debug_check[1];
6401 n_switches_alloc = n_switches_alloc_debug_check[1];
6402 switches = switches_debug_check[1];
6405 /* Avoid crash when computing %j in this early. */
6406 save = save_temps_flag;
6407 save_temps_flag = SAVE_TEMPS_NONE;
6409 compare_debug = -compare_debug;
6410 do_self_spec ("%:compare-debug-self-opt()");
6412 save_temps_flag = save;
6414 if (!compare_debug_second)
6416 n_switches_debug_check[1] = n_switches;
6417 n_switches_alloc_debug_check[1] = n_switches_alloc;
6418 switches_debug_check[1] = switches;
6419 compare_debug = -compare_debug;
6420 n_switches = n_switches_debug_check[0];
6421 n_switches_alloc = n_switches_debug_check[0];
6422 switches = switches_debug_check[0];
6427 /* If we have a GCC_EXEC_PREFIX envvar, modify it for cpp's sake. */
6428 if (gcc_exec_prefix)
6429 gcc_exec_prefix = concat (gcc_exec_prefix, spec_machine, dir_separator_str,
6430 spec_version, dir_separator_str, NULL);
6432 /* Now we have the specs.
6433 Set the `valid' bits for switches that match anything in any spec. */
6435 validate_all_switches ();
6437 /* Now that we have the switches and the specs, set
6438 the subdirectory based on the options. */
6439 set_multilib_dir ();
6441 /* Set up to remember the pathname of gcc and any options
6442 needed for collect. We use argv[0] instead of progname because
6443 we need the complete pathname. */
6444 obstack_init (&collect_obstack);
6445 obstack_grow (&collect_obstack, "COLLECT_GCC=", sizeof ("COLLECT_GCC=") - 1);
6446 obstack_grow (&collect_obstack, argv[0], strlen (argv[0]) + 1);
6447 xputenv (XOBFINISH (&collect_obstack, char *));
6449 /* Set up to remember the pathname of the lto wrapper. */
6451 lto_wrapper_file = find_a_file (&exec_prefixes, "lto-wrapper", X_OK, false);
6452 if (lto_wrapper_file)
6454 lto_wrapper_spec = lto_wrapper_file;
6455 obstack_init (&collect_obstack);
6456 obstack_grow (&collect_obstack, "COLLECT_LTO_WRAPPER=",
6457 sizeof ("COLLECT_LTO_WRAPPER=") - 1);
6458 obstack_grow (&collect_obstack, lto_wrapper_spec,
6459 strlen (lto_wrapper_spec) + 1);
6460 xputenv (XOBFINISH (&collect_obstack, char *));
6463 /* Warn about any switches that no pass was interested in. */
6465 for (i = 0; (int) i < n_switches; i++)
6466 if (! switches[i].validated)
6467 error ("unrecognized option %<-%s%>", switches[i].part1);
6469 /* Obey some of the options. */
6471 if (print_search_dirs)
6473 printf (_("install: %s%s\n"),
6474 gcc_exec_prefix ? gcc_exec_prefix : standard_exec_prefix,
6475 gcc_exec_prefix ? "" : machine_suffix);
6476 printf (_("programs: %s\n"),
6477 build_search_list (&exec_prefixes, "", false, false));
6478 printf (_("libraries: %s\n"),
6479 build_search_list (&startfile_prefixes, "", false, true));
6480 return (0);
6483 if (print_file_name)
6485 printf ("%s\n", find_file (print_file_name));
6486 return (0);
6489 if (print_prog_name)
6491 char *newname = find_a_file (&exec_prefixes, print_prog_name, X_OK, 0);
6492 printf ("%s\n", (newname ? newname : print_prog_name));
6493 return (0);
6496 if (print_multi_lib)
6498 print_multilib_info ();
6499 return (0);
6502 if (print_multi_directory)
6504 if (multilib_dir == NULL)
6505 printf (".\n");
6506 else
6507 printf ("%s\n", multilib_dir);
6508 return (0);
6511 if (print_sysroot)
6513 if (target_system_root)
6515 if (target_sysroot_suffix)
6516 printf ("%s%s\n", target_system_root, target_sysroot_suffix);
6517 else
6518 printf ("%s\n", target_system_root);
6520 return (0);
6523 if (print_multi_os_directory)
6525 if (multilib_os_dir == NULL)
6526 printf (".\n");
6527 else
6528 printf ("%s\n", multilib_os_dir);
6529 return (0);
6532 if (print_sysroot_headers_suffix)
6534 if (*sysroot_hdrs_suffix_spec)
6536 printf("%s\n", (target_sysroot_hdrs_suffix
6537 ? target_sysroot_hdrs_suffix
6538 : ""));
6539 return (0);
6541 else
6542 /* The error status indicates that only one set of fixed
6543 headers should be built. */
6544 fatal_error ("not configured with sysroot headers suffix");
6547 if (print_help_list)
6549 display_help ();
6551 if (! verbose_flag)
6553 printf (_("\nFor bug reporting instructions, please see:\n"));
6554 printf ("%s.\n", bug_report_url);
6556 return (0);
6559 /* We do not exit here. Instead we have created a fake input file
6560 called 'help-dummy' which needs to be compiled, and we pass this
6561 on the various sub-processes, along with the --help switch.
6562 Ensure their output appears after ours. */
6563 fputc ('\n', stdout);
6564 fflush (stdout);
6567 if (print_version)
6569 printf (_("%s %s%s\n"), progname, pkgversion_string,
6570 version_string);
6571 printf ("Copyright %s 2011 Free Software Foundation, Inc.\n",
6572 _("(C)"));
6573 fputs (_("This is free software; see the source for copying conditions. There is NO\n\
6574 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\n"),
6575 stdout);
6576 if (! verbose_flag)
6577 return 0;
6579 /* We do not exit here. We use the same mechanism of --help to print
6580 the version of the sub-processes. */
6581 fputc ('\n', stdout);
6582 fflush (stdout);
6585 if (verbose_flag)
6587 int n;
6588 const char *thrmod;
6590 fnotice (stderr, "Target: %s\n", spec_machine);
6591 fnotice (stderr, "Configured with: %s\n", configuration_arguments);
6593 #ifdef THREAD_MODEL_SPEC
6594 /* We could have defined THREAD_MODEL_SPEC to "%*" by default,
6595 but there's no point in doing all this processing just to get
6596 thread_model back. */
6597 obstack_init (&obstack);
6598 do_spec_1 (THREAD_MODEL_SPEC, 0, thread_model);
6599 obstack_1grow (&obstack, '\0');
6600 thrmod = XOBFINISH (&obstack, const char *);
6601 #else
6602 thrmod = thread_model;
6603 #endif
6605 fnotice (stderr, "Thread model: %s\n", thrmod);
6607 /* compiler_version is truncated at the first space when initialized
6608 from version string, so truncate version_string at the first space
6609 before comparing. */
6610 for (n = 0; version_string[n]; n++)
6611 if (version_string[n] == ' ')
6612 break;
6614 if (! strncmp (version_string, compiler_version, n)
6615 && compiler_version[n] == 0)
6616 fnotice (stderr, "gcc version %s %s\n", version_string,
6617 pkgversion_string);
6618 else
6619 fnotice (stderr, "gcc driver version %s %sexecuting gcc version %s\n",
6620 version_string, pkgversion_string, compiler_version);
6622 if (n_infiles == 0)
6623 return (0);
6626 if (n_infiles == added_libraries)
6627 fatal_error ("no input files");
6629 if (seen_error ())
6630 goto out;
6632 /* Make a place to record the compiler output file names
6633 that correspond to the input files. */
6635 i = n_infiles;
6636 i += lang_specific_extra_outfiles;
6637 outfiles = XCNEWVEC (const char *, i);
6639 /* Record which files were specified explicitly as link input. */
6641 explicit_link_files = XCNEWVEC (char, n_infiles);
6643 combine_inputs = have_o || flag_wpa;
6645 for (i = 0; (int) i < n_infiles; i++)
6647 const char *name = infiles[i].name;
6648 struct compiler *compiler = lookup_compiler (name,
6649 strlen (name),
6650 infiles[i].language);
6652 if (compiler && !(compiler->combinable))
6653 combine_inputs = false;
6655 if (lang_n_infiles > 0 && compiler != input_file_compiler
6656 && infiles[i].language && infiles[i].language[0] != '*')
6657 infiles[i].incompiler = compiler;
6658 else if (compiler)
6660 lang_n_infiles++;
6661 input_file_compiler = compiler;
6662 infiles[i].incompiler = compiler;
6664 else
6666 /* Since there is no compiler for this input file, assume it is a
6667 linker file. */
6668 explicit_link_files[i] = 1;
6669 infiles[i].incompiler = NULL;
6671 infiles[i].compiled = false;
6672 infiles[i].preprocessed = false;
6675 if (!combine_inputs && have_c && have_o && lang_n_infiles > 1)
6676 fatal_error ("cannot specify -o with -c, -S or -E with multiple files");
6678 for (i = 0; (int) i < n_infiles; i++)
6680 int this_file_error = 0;
6682 /* Tell do_spec what to substitute for %i. */
6684 input_file_number = i;
6685 set_input (infiles[i].name);
6687 if (infiles[i].compiled)
6688 continue;
6690 /* Use the same thing in %o, unless cp->spec says otherwise. */
6692 outfiles[i] = gcc_input_filename;
6694 /* Figure out which compiler from the file's suffix. */
6696 input_file_compiler
6697 = lookup_compiler (infiles[i].name, input_filename_length,
6698 infiles[i].language);
6700 if (input_file_compiler)
6702 /* Ok, we found an applicable compiler. Run its spec. */
6704 if (input_file_compiler->spec[0] == '#')
6706 error ("%s: %s compiler not installed on this system",
6707 gcc_input_filename, &input_file_compiler->spec[1]);
6708 this_file_error = 1;
6710 else
6712 if (compare_debug)
6714 free (debug_check_temp_file[0]);
6715 debug_check_temp_file[0] = NULL;
6717 free (debug_check_temp_file[1]);
6718 debug_check_temp_file[1] = NULL;
6721 value = do_spec (input_file_compiler->spec);
6722 infiles[i].compiled = true;
6723 if (value < 0)
6724 this_file_error = 1;
6725 else if (compare_debug && debug_check_temp_file[0])
6727 if (verbose_flag)
6728 inform (0, "recompiling with -fcompare-debug");
6730 compare_debug = -compare_debug;
6731 n_switches = n_switches_debug_check[1];
6732 n_switches_alloc = n_switches_alloc_debug_check[1];
6733 switches = switches_debug_check[1];
6735 value = do_spec (input_file_compiler->spec);
6737 compare_debug = -compare_debug;
6738 n_switches = n_switches_debug_check[0];
6739 n_switches_alloc = n_switches_alloc_debug_check[0];
6740 switches = switches_debug_check[0];
6742 if (value < 0)
6744 error ("during -fcompare-debug recompilation");
6745 this_file_error = 1;
6748 gcc_assert (debug_check_temp_file[1]
6749 && filename_cmp (debug_check_temp_file[0],
6750 debug_check_temp_file[1]));
6752 if (verbose_flag)
6753 inform (0, "comparing final insns dumps");
6755 if (compare_files (debug_check_temp_file))
6756 this_file_error = 1;
6759 if (compare_debug)
6761 free (debug_check_temp_file[0]);
6762 debug_check_temp_file[0] = NULL;
6764 free (debug_check_temp_file[1]);
6765 debug_check_temp_file[1] = NULL;
6770 /* If this file's name does not contain a recognized suffix,
6771 record it as explicit linker input. */
6773 else
6774 explicit_link_files[i] = 1;
6776 /* Clear the delete-on-failure queue, deleting the files in it
6777 if this compilation failed. */
6779 if (this_file_error)
6781 delete_failure_queue ();
6782 errorcount++;
6784 /* If this compilation succeeded, don't delete those files later. */
6785 clear_failure_queue ();
6788 /* Reset the input file name to the first compile/object file name, for use
6789 with %b in LINK_SPEC. We use the first input file that we can find
6790 a compiler to compile it instead of using infiles.language since for
6791 languages other than C we use aliases that we then lookup later. */
6792 if (n_infiles > 0)
6794 int i;
6796 for (i = 0; i < n_infiles ; i++)
6797 if (infiles[i].incompiler
6798 || (infiles[i].language && infiles[i].language[0] != '*'))
6800 set_input (infiles[i].name);
6801 break;
6805 if (!seen_error ())
6807 /* Make sure INPUT_FILE_NUMBER points to first available open
6808 slot. */
6809 input_file_number = n_infiles;
6810 if (lang_specific_pre_link ())
6811 errorcount++;
6814 /* Determine if there are any linker input files. */
6815 num_linker_inputs = 0;
6816 for (i = 0; (int) i < n_infiles; i++)
6817 if (explicit_link_files[i] || outfiles[i] != NULL)
6818 num_linker_inputs++;
6820 /* Run ld to link all the compiler output files. */
6822 if (num_linker_inputs > 0 && !seen_error () && print_subprocess_help < 2)
6824 int tmp = execution_count;
6825 #if HAVE_LTO_PLUGIN > 0
6826 #if HAVE_LTO_PLUGIN == 2
6827 const char *fno_use_linker_plugin = "fno-use-linker-plugin";
6828 #else
6829 const char *fuse_linker_plugin = "fuse-linker-plugin";
6830 #endif
6831 #endif
6833 /* We'll use ld if we can't find collect2. */
6834 if (! strcmp (linker_name_spec, "collect2"))
6836 char *s = find_a_file (&exec_prefixes, "collect2", X_OK, false);
6837 if (s == NULL)
6838 linker_name_spec = "ld";
6841 #if HAVE_LTO_PLUGIN > 0
6842 #if HAVE_LTO_PLUGIN == 2
6843 if (!switch_matches (fno_use_linker_plugin,
6844 fno_use_linker_plugin + strlen (fno_use_linker_plugin), 0))
6845 #else
6846 if (switch_matches (fuse_linker_plugin,
6847 fuse_linker_plugin + strlen (fuse_linker_plugin), 0))
6848 #endif
6850 linker_plugin_file_spec = find_a_file (&exec_prefixes,
6851 LTOPLUGINSONAME, R_OK,
6852 false);
6853 if (!linker_plugin_file_spec)
6854 fatal_error ("-fuse-linker-plugin, but " LTOPLUGINSONAME " not found");
6856 #endif
6857 lto_gcc_spec = argv[0];
6859 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
6860 for collect. */
6861 putenv_from_prefixes (&exec_prefixes, "COMPILER_PATH", false);
6862 putenv_from_prefixes (&startfile_prefixes, LIBRARY_PATH_ENV, true);
6864 if (print_subprocess_help == 1)
6866 printf (_("\nLinker options\n==============\n\n"));
6867 printf (_("Use \"-Wl,OPTION\" to pass \"OPTION\""
6868 " to the linker.\n\n"));
6869 fflush (stdout);
6871 value = do_spec (link_command_spec);
6872 if (value < 0)
6873 errorcount = 1;
6874 linker_was_run = (tmp != execution_count);
6877 /* If options said don't run linker,
6878 complain about input files to be given to the linker. */
6880 if (! linker_was_run && !seen_error ())
6881 for (i = 0; (int) i < n_infiles; i++)
6882 if (explicit_link_files[i]
6883 && !(infiles[i].language && infiles[i].language[0] == '*'))
6884 warning (0, "%s: linker input file unused because linking not done",
6885 outfiles[i]);
6887 /* Delete some or all of the temporary files we made. */
6889 if (seen_error ())
6890 delete_failure_queue ();
6891 delete_temp_files ();
6893 if (print_help_list)
6895 printf (("\nFor bug reporting instructions, please see:\n"));
6896 printf ("%s\n", bug_report_url);
6899 out:
6900 return (signal_count != 0 ? 2
6901 : seen_error () ? (pass_exit_codes ? greatest_status : 1)
6902 : 0);
6905 /* Find the proper compilation spec for the file name NAME,
6906 whose length is LENGTH. LANGUAGE is the specified language,
6907 or 0 if this file is to be passed to the linker. */
6909 static struct compiler *
6910 lookup_compiler (const char *name, size_t length, const char *language)
6912 struct compiler *cp;
6914 /* If this was specified by the user to be a linker input, indicate that. */
6915 if (language != 0 && language[0] == '*')
6916 return 0;
6918 /* Otherwise, look for the language, if one is spec'd. */
6919 if (language != 0)
6921 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6922 if (cp->suffix[0] == '@' && !strcmp (cp->suffix + 1, language))
6923 return cp;
6925 error ("language %s not recognized", language);
6926 return 0;
6929 /* Look for a suffix. */
6930 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6932 if (/* The suffix `-' matches only the file name `-'. */
6933 (!strcmp (cp->suffix, "-") && !strcmp (name, "-"))
6934 || (strlen (cp->suffix) < length
6935 /* See if the suffix matches the end of NAME. */
6936 && !strcmp (cp->suffix,
6937 name + length - strlen (cp->suffix))
6939 break;
6942 #if defined (OS2) ||defined (HAVE_DOS_BASED_FILE_SYSTEM)
6943 /* Look again, but case-insensitively this time. */
6944 if (cp < compilers)
6945 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6947 if (/* The suffix `-' matches only the file name `-'. */
6948 (!strcmp (cp->suffix, "-") && !strcmp (name, "-"))
6949 || (strlen (cp->suffix) < length
6950 /* See if the suffix matches the end of NAME. */
6951 && ((!strcmp (cp->suffix,
6952 name + length - strlen (cp->suffix))
6953 || !strpbrk (cp->suffix, "ABCDEFGHIJKLMNOPQRSTUVWXYZ"))
6954 && !strcasecmp (cp->suffix,
6955 name + length - strlen (cp->suffix)))
6957 break;
6959 #endif
6961 if (cp >= compilers)
6963 if (cp->spec[0] != '@')
6964 /* A non-alias entry: return it. */
6965 return cp;
6967 /* An alias entry maps a suffix to a language.
6968 Search for the language; pass 0 for NAME and LENGTH
6969 to avoid infinite recursion if language not found. */
6970 return lookup_compiler (NULL, 0, cp->spec + 1);
6972 return 0;
6975 static char *
6976 save_string (const char *s, int len)
6978 char *result = XNEWVEC (char, len + 1);
6980 memcpy (result, s, len);
6981 result[len] = 0;
6982 return result;
6985 void
6986 pfatal_with_name (const char *name)
6988 perror_with_name (name);
6989 delete_temp_files ();
6990 exit (1);
6993 static void
6994 perror_with_name (const char *name)
6996 error ("%s: %m", name);
6999 static inline void
7000 validate_switches_from_spec (const char *spec)
7002 const char *p = spec;
7003 char c;
7004 while ((c = *p++))
7005 if (c == '%' && (*p == '{' || *p == '<' || (*p == 'W' && *++p == '{')))
7006 /* We have a switch spec. */
7007 p = validate_switches (p + 1);
7010 static void
7011 validate_all_switches (void)
7013 struct compiler *comp;
7014 struct spec_list *spec;
7016 for (comp = compilers; comp->spec; comp++)
7017 validate_switches_from_spec (comp->spec);
7019 /* Look through the linked list of specs read from the specs file. */
7020 for (spec = specs; spec; spec = spec->next)
7021 validate_switches_from_spec (*spec->ptr_spec);
7023 validate_switches_from_spec (link_command_spec);
7026 /* Look at the switch-name that comes after START
7027 and mark as valid all supplied switches that match it. */
7029 static const char *
7030 validate_switches (const char *start)
7032 const char *p = start;
7033 const char *atom;
7034 size_t len;
7035 int i;
7036 bool suffix = false;
7037 bool starred = false;
7039 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
7041 next_member:
7042 SKIP_WHITE ();
7044 if (*p == '!')
7045 p++;
7047 SKIP_WHITE ();
7048 if (*p == '.' || *p == ',')
7049 suffix = true, p++;
7051 atom = p;
7052 while (ISIDNUM (*p) || *p == '-' || *p == '+' || *p == '='
7053 || *p == ',' || *p == '.' || *p == '@')
7054 p++;
7055 len = p - atom;
7057 if (*p == '*')
7058 starred = true, p++;
7060 SKIP_WHITE ();
7062 if (!suffix)
7064 /* Mark all matching switches as valid. */
7065 for (i = 0; i < n_switches; i++)
7066 if (!strncmp (switches[i].part1, atom, len)
7067 && (starred || switches[i].part1[len] == 0))
7068 switches[i].validated = 1;
7071 if (*p) p++;
7072 if (*p && (p[-1] == '|' || p[-1] == '&'))
7073 goto next_member;
7075 if (*p && p[-1] == ':')
7077 while (*p && *p != ';' && *p != '}')
7079 if (*p == '%')
7081 p++;
7082 if (*p == '{' || *p == '<')
7083 p = validate_switches (p+1);
7084 else if (p[0] == 'W' && p[1] == '{')
7085 p = validate_switches (p+2);
7087 else
7088 p++;
7091 if (*p) p++;
7092 if (*p && p[-1] == ';')
7093 goto next_member;
7096 return p;
7097 #undef SKIP_WHITE
7100 struct mdswitchstr
7102 const char *str;
7103 int len;
7106 static struct mdswitchstr *mdswitches;
7107 static int n_mdswitches;
7109 /* Check whether a particular argument was used. The first time we
7110 canonicalize the switches to keep only the ones we care about. */
7112 static int
7113 used_arg (const char *p, int len)
7115 struct mswitchstr
7117 const char *str;
7118 const char *replace;
7119 int len;
7120 int rep_len;
7123 static struct mswitchstr *mswitches;
7124 static int n_mswitches;
7125 int i, j;
7127 if (!mswitches)
7129 struct mswitchstr *matches;
7130 const char *q;
7131 int cnt = 0;
7133 /* Break multilib_matches into the component strings of string
7134 and replacement string. */
7135 for (q = multilib_matches; *q != '\0'; q++)
7136 if (*q == ';')
7137 cnt++;
7139 matches
7140 = (struct mswitchstr *) alloca ((sizeof (struct mswitchstr)) * cnt);
7141 i = 0;
7142 q = multilib_matches;
7143 while (*q != '\0')
7145 matches[i].str = q;
7146 while (*q != ' ')
7148 if (*q == '\0')
7150 invalid_matches:
7151 fatal_error ("multilib spec %qs is invalid",
7152 multilib_matches);
7154 q++;
7156 matches[i].len = q - matches[i].str;
7158 matches[i].replace = ++q;
7159 while (*q != ';' && *q != '\0')
7161 if (*q == ' ')
7162 goto invalid_matches;
7163 q++;
7165 matches[i].rep_len = q - matches[i].replace;
7166 i++;
7167 if (*q == ';')
7168 q++;
7171 /* Now build a list of the replacement string for switches that we care
7172 about. Make sure we allocate at least one entry. This prevents
7173 xmalloc from calling fatal, and prevents us from re-executing this
7174 block of code. */
7175 mswitches
7176 = XNEWVEC (struct mswitchstr, n_mdswitches + (n_switches ? n_switches : 1));
7177 for (i = 0; i < n_switches; i++)
7178 if ((switches[i].live_cond & SWITCH_IGNORE) == 0)
7180 int xlen = strlen (switches[i].part1);
7181 for (j = 0; j < cnt; j++)
7182 if (xlen == matches[j].len
7183 && ! strncmp (switches[i].part1, matches[j].str, xlen))
7185 mswitches[n_mswitches].str = matches[j].replace;
7186 mswitches[n_mswitches].len = matches[j].rep_len;
7187 mswitches[n_mswitches].replace = (char *) 0;
7188 mswitches[n_mswitches].rep_len = 0;
7189 n_mswitches++;
7190 break;
7194 /* Add MULTILIB_DEFAULTS switches too, as long as they were not present
7195 on the command line nor any options mutually incompatible with
7196 them. */
7197 for (i = 0; i < n_mdswitches; i++)
7199 const char *r;
7201 for (q = multilib_options; *q != '\0'; q++)
7203 while (*q == ' ')
7204 q++;
7206 r = q;
7207 while (strncmp (q, mdswitches[i].str, mdswitches[i].len) != 0
7208 || strchr (" /", q[mdswitches[i].len]) == NULL)
7210 while (*q != ' ' && *q != '/' && *q != '\0')
7211 q++;
7212 if (*q != '/')
7213 break;
7214 q++;
7217 if (*q != ' ' && *q != '\0')
7219 while (*r != ' ' && *r != '\0')
7221 q = r;
7222 while (*q != ' ' && *q != '/' && *q != '\0')
7223 q++;
7225 if (used_arg (r, q - r))
7226 break;
7228 if (*q != '/')
7230 mswitches[n_mswitches].str = mdswitches[i].str;
7231 mswitches[n_mswitches].len = mdswitches[i].len;
7232 mswitches[n_mswitches].replace = (char *) 0;
7233 mswitches[n_mswitches].rep_len = 0;
7234 n_mswitches++;
7235 break;
7238 r = q + 1;
7240 break;
7246 for (i = 0; i < n_mswitches; i++)
7247 if (len == mswitches[i].len && ! strncmp (p, mswitches[i].str, len))
7248 return 1;
7250 return 0;
7253 static int
7254 default_arg (const char *p, int len)
7256 int i;
7258 for (i = 0; i < n_mdswitches; i++)
7259 if (len == mdswitches[i].len && ! strncmp (p, mdswitches[i].str, len))
7260 return 1;
7262 return 0;
7265 /* Work out the subdirectory to use based on the options. The format of
7266 multilib_select is a list of elements. Each element is a subdirectory
7267 name followed by a list of options followed by a semicolon. The format
7268 of multilib_exclusions is the same, but without the preceding
7269 directory. First gcc will check the exclusions, if none of the options
7270 beginning with an exclamation point are present, and all of the other
7271 options are present, then we will ignore this completely. Passing
7272 that, gcc will consider each multilib_select in turn using the same
7273 rules for matching the options. If a match is found, that subdirectory
7274 will be used. */
7276 static void
7277 set_multilib_dir (void)
7279 const char *p;
7280 unsigned int this_path_len;
7281 const char *this_path, *this_arg;
7282 const char *start, *end;
7283 int not_arg;
7284 int ok, ndfltok, first;
7286 n_mdswitches = 0;
7287 start = multilib_defaults;
7288 while (*start == ' ' || *start == '\t')
7289 start++;
7290 while (*start != '\0')
7292 n_mdswitches++;
7293 while (*start != ' ' && *start != '\t' && *start != '\0')
7294 start++;
7295 while (*start == ' ' || *start == '\t')
7296 start++;
7299 if (n_mdswitches)
7301 int i = 0;
7303 mdswitches = XNEWVEC (struct mdswitchstr, n_mdswitches);
7304 for (start = multilib_defaults; *start != '\0'; start = end + 1)
7306 while (*start == ' ' || *start == '\t')
7307 start++;
7309 if (*start == '\0')
7310 break;
7312 for (end = start + 1;
7313 *end != ' ' && *end != '\t' && *end != '\0'; end++)
7316 obstack_grow (&multilib_obstack, start, end - start);
7317 obstack_1grow (&multilib_obstack, 0);
7318 mdswitches[i].str = XOBFINISH (&multilib_obstack, const char *);
7319 mdswitches[i++].len = end - start;
7321 if (*end == '\0')
7322 break;
7326 p = multilib_exclusions;
7327 while (*p != '\0')
7329 /* Ignore newlines. */
7330 if (*p == '\n')
7332 ++p;
7333 continue;
7336 /* Check the arguments. */
7337 ok = 1;
7338 while (*p != ';')
7340 if (*p == '\0')
7342 invalid_exclusions:
7343 fatal_error ("multilib exclusions %qs is invalid",
7344 multilib_exclusions);
7347 if (! ok)
7349 ++p;
7350 continue;
7353 this_arg = p;
7354 while (*p != ' ' && *p != ';')
7356 if (*p == '\0')
7357 goto invalid_exclusions;
7358 ++p;
7361 if (*this_arg != '!')
7362 not_arg = 0;
7363 else
7365 not_arg = 1;
7366 ++this_arg;
7369 ok = used_arg (this_arg, p - this_arg);
7370 if (not_arg)
7371 ok = ! ok;
7373 if (*p == ' ')
7374 ++p;
7377 if (ok)
7378 return;
7380 ++p;
7383 first = 1;
7384 p = multilib_select;
7385 while (*p != '\0')
7387 /* Ignore newlines. */
7388 if (*p == '\n')
7390 ++p;
7391 continue;
7394 /* Get the initial path. */
7395 this_path = p;
7396 while (*p != ' ')
7398 if (*p == '\0')
7400 invalid_select:
7401 fatal_error ("multilib select %qs is invalid",
7402 multilib_select);
7404 ++p;
7406 this_path_len = p - this_path;
7408 /* Check the arguments. */
7409 ok = 1;
7410 ndfltok = 1;
7411 ++p;
7412 while (*p != ';')
7414 if (*p == '\0')
7415 goto invalid_select;
7417 if (! ok)
7419 ++p;
7420 continue;
7423 this_arg = p;
7424 while (*p != ' ' && *p != ';')
7426 if (*p == '\0')
7427 goto invalid_select;
7428 ++p;
7431 if (*this_arg != '!')
7432 not_arg = 0;
7433 else
7435 not_arg = 1;
7436 ++this_arg;
7439 /* If this is a default argument, we can just ignore it.
7440 This is true even if this_arg begins with '!'. Beginning
7441 with '!' does not mean that this argument is necessarily
7442 inappropriate for this library: it merely means that
7443 there is a more specific library which uses this
7444 argument. If this argument is a default, we need not
7445 consider that more specific library. */
7446 ok = used_arg (this_arg, p - this_arg);
7447 if (not_arg)
7448 ok = ! ok;
7450 if (! ok)
7451 ndfltok = 0;
7453 if (default_arg (this_arg, p - this_arg))
7454 ok = 1;
7456 if (*p == ' ')
7457 ++p;
7460 if (ok && first)
7462 if (this_path_len != 1
7463 || this_path[0] != '.')
7465 char *new_multilib_dir = XNEWVEC (char, this_path_len + 1);
7466 char *q;
7468 strncpy (new_multilib_dir, this_path, this_path_len);
7469 new_multilib_dir[this_path_len] = '\0';
7470 q = strchr (new_multilib_dir, ':');
7471 if (q != NULL)
7472 *q = '\0';
7473 multilib_dir = new_multilib_dir;
7475 first = 0;
7478 if (ndfltok)
7480 const char *q = this_path, *end = this_path + this_path_len;
7482 while (q < end && *q != ':')
7483 q++;
7484 if (q < end)
7486 char *new_multilib_os_dir = XNEWVEC (char, end - q);
7487 memcpy (new_multilib_os_dir, q + 1, end - q - 1);
7488 new_multilib_os_dir[end - q - 1] = '\0';
7489 multilib_os_dir = new_multilib_os_dir;
7490 break;
7494 ++p;
7497 if (multilib_dir == NULL && multilib_os_dir != NULL
7498 && strcmp (multilib_os_dir, ".") == 0)
7500 free (CONST_CAST (char *, multilib_os_dir));
7501 multilib_os_dir = NULL;
7503 else if (multilib_dir != NULL && multilib_os_dir == NULL)
7504 multilib_os_dir = multilib_dir;
7507 /* Print out the multiple library subdirectory selection
7508 information. This prints out a series of lines. Each line looks
7509 like SUBDIRECTORY;@OPTION@OPTION, with as many options as is
7510 required. Only the desired options are printed out, the negative
7511 matches. The options are print without a leading dash. There are
7512 no spaces to make it easy to use the information in the shell.
7513 Each subdirectory is printed only once. This assumes the ordering
7514 generated by the genmultilib script. Also, we leave out ones that match
7515 the exclusions. */
7517 static void
7518 print_multilib_info (void)
7520 const char *p = multilib_select;
7521 const char *last_path = 0, *this_path;
7522 int skip;
7523 unsigned int last_path_len = 0;
7525 while (*p != '\0')
7527 skip = 0;
7528 /* Ignore newlines. */
7529 if (*p == '\n')
7531 ++p;
7532 continue;
7535 /* Get the initial path. */
7536 this_path = p;
7537 while (*p != ' ')
7539 if (*p == '\0')
7541 invalid_select:
7542 fatal_error ("multilib select %qs is invalid", multilib_select);
7545 ++p;
7548 /* When --disable-multilib was used but target defines
7549 MULTILIB_OSDIRNAMES, entries starting with .: are there just
7550 to find multilib_os_dir, so skip them from output. */
7551 if (this_path[0] == '.' && this_path[1] == ':')
7552 skip = 1;
7554 /* Check for matches with the multilib_exclusions. We don't bother
7555 with the '!' in either list. If any of the exclusion rules match
7556 all of its options with the select rule, we skip it. */
7558 const char *e = multilib_exclusions;
7559 const char *this_arg;
7561 while (*e != '\0')
7563 int m = 1;
7564 /* Ignore newlines. */
7565 if (*e == '\n')
7567 ++e;
7568 continue;
7571 /* Check the arguments. */
7572 while (*e != ';')
7574 const char *q;
7575 int mp = 0;
7577 if (*e == '\0')
7579 invalid_exclusion:
7580 fatal_error ("multilib exclusion %qs is invalid",
7581 multilib_exclusions);
7584 if (! m)
7586 ++e;
7587 continue;
7590 this_arg = e;
7592 while (*e != ' ' && *e != ';')
7594 if (*e == '\0')
7595 goto invalid_exclusion;
7596 ++e;
7599 q = p + 1;
7600 while (*q != ';')
7602 const char *arg;
7603 int len = e - this_arg;
7605 if (*q == '\0')
7606 goto invalid_select;
7608 arg = q;
7610 while (*q != ' ' && *q != ';')
7612 if (*q == '\0')
7613 goto invalid_select;
7614 ++q;
7617 if (! strncmp (arg, this_arg,
7618 (len < q - arg) ? q - arg : len)
7619 || default_arg (this_arg, e - this_arg))
7621 mp = 1;
7622 break;
7625 if (*q == ' ')
7626 ++q;
7629 if (! mp)
7630 m = 0;
7632 if (*e == ' ')
7633 ++e;
7636 if (m)
7638 skip = 1;
7639 break;
7642 if (*e != '\0')
7643 ++e;
7647 if (! skip)
7649 /* If this is a duplicate, skip it. */
7650 skip = (last_path != 0
7651 && (unsigned int) (p - this_path) == last_path_len
7652 && ! filename_ncmp (last_path, this_path, last_path_len));
7654 last_path = this_path;
7655 last_path_len = p - this_path;
7658 /* If this directory requires any default arguments, we can skip
7659 it. We will already have printed a directory identical to
7660 this one which does not require that default argument. */
7661 if (! skip)
7663 const char *q;
7665 q = p + 1;
7666 while (*q != ';')
7668 const char *arg;
7670 if (*q == '\0')
7671 goto invalid_select;
7673 if (*q == '!')
7674 arg = NULL;
7675 else
7676 arg = q;
7678 while (*q != ' ' && *q != ';')
7680 if (*q == '\0')
7681 goto invalid_select;
7682 ++q;
7685 if (arg != NULL
7686 && default_arg (arg, q - arg))
7688 skip = 1;
7689 break;
7692 if (*q == ' ')
7693 ++q;
7697 if (! skip)
7699 const char *p1;
7701 for (p1 = last_path; p1 < p && *p1 != ':'; p1++)
7702 putchar (*p1);
7703 putchar (';');
7706 ++p;
7707 while (*p != ';')
7709 int use_arg;
7711 if (*p == '\0')
7712 goto invalid_select;
7714 if (skip)
7716 ++p;
7717 continue;
7720 use_arg = *p != '!';
7722 if (use_arg)
7723 putchar ('@');
7725 while (*p != ' ' && *p != ';')
7727 if (*p == '\0')
7728 goto invalid_select;
7729 if (use_arg)
7730 putchar (*p);
7731 ++p;
7734 if (*p == ' ')
7735 ++p;
7738 if (! skip)
7740 /* If there are extra options, print them now. */
7741 if (multilib_extra && *multilib_extra)
7743 int print_at = TRUE;
7744 const char *q;
7746 for (q = multilib_extra; *q != '\0'; q++)
7748 if (*q == ' ')
7749 print_at = TRUE;
7750 else
7752 if (print_at)
7753 putchar ('@');
7754 putchar (*q);
7755 print_at = FALSE;
7760 putchar ('\n');
7763 ++p;
7767 /* getenv built-in spec function.
7769 Returns the value of the environment variable given by its first
7770 argument, concatenated with the second argument. If the
7771 environment variable is not defined, a fatal error is issued. */
7773 static const char *
7774 getenv_spec_function (int argc, const char **argv)
7776 char *value;
7777 char *result;
7778 char *ptr;
7779 size_t len;
7781 if (argc != 2)
7782 return NULL;
7784 value = getenv (argv[0]);
7785 if (!value)
7786 fatal_error ("environment variable %qs not defined", argv[0]);
7788 /* We have to escape every character of the environment variable so
7789 they are not interpreted as active spec characters. A
7790 particularly painful case is when we are reading a variable
7791 holding a windows path complete with \ separators. */
7792 len = strlen (value) * 2 + strlen (argv[1]) + 1;
7793 result = XNEWVAR (char, len);
7794 for (ptr = result; *value; ptr += 2)
7796 ptr[0] = '\\';
7797 ptr[1] = *value++;
7800 strcpy (ptr, argv[1]);
7802 return result;
7805 /* if-exists built-in spec function.
7807 Checks to see if the file specified by the absolute pathname in
7808 ARGS exists. Returns that pathname if found.
7810 The usual use for this function is to check for a library file
7811 (whose name has been expanded with %s). */
7813 static const char *
7814 if_exists_spec_function (int argc, const char **argv)
7816 /* Must have only one argument. */
7817 if (argc == 1 && IS_ABSOLUTE_PATH (argv[0]) && ! access (argv[0], R_OK))
7818 return argv[0];
7820 return NULL;
7823 /* if-exists-else built-in spec function.
7825 This is like if-exists, but takes an additional argument which
7826 is returned if the first argument does not exist. */
7828 static const char *
7829 if_exists_else_spec_function (int argc, const char **argv)
7831 /* Must have exactly two arguments. */
7832 if (argc != 2)
7833 return NULL;
7835 if (IS_ABSOLUTE_PATH (argv[0]) && ! access (argv[0], R_OK))
7836 return argv[0];
7838 return argv[1];
7841 /* replace-outfile built-in spec function.
7843 This looks for the first argument in the outfiles array's name and
7844 replaces it with the second argument. */
7846 static const char *
7847 replace_outfile_spec_function (int argc, const char **argv)
7849 int i;
7850 /* Must have exactly two arguments. */
7851 if (argc != 2)
7852 abort ();
7854 for (i = 0; i < n_infiles; i++)
7856 if (outfiles[i] && !filename_cmp (outfiles[i], argv[0]))
7857 outfiles[i] = xstrdup (argv[1]);
7859 return NULL;
7862 /* remove-outfile built-in spec function.
7864 * This looks for the first argument in the outfiles array's name and
7865 * removes it. */
7867 static const char *
7868 remove_outfile_spec_function (int argc, const char **argv)
7870 int i;
7871 /* Must have exactly one argument. */
7872 if (argc != 1)
7873 abort ();
7875 for (i = 0; i < n_infiles; i++)
7877 if (outfiles[i] && !filename_cmp (outfiles[i], argv[0]))
7878 outfiles[i] = NULL;
7880 return NULL;
7883 /* Given two version numbers, compares the two numbers.
7884 A version number must match the regular expression
7885 ([1-9][0-9]*|0)(\.([1-9][0-9]*|0))*
7887 static int
7888 compare_version_strings (const char *v1, const char *v2)
7890 int rresult;
7891 regex_t r;
7893 if (regcomp (&r, "^([1-9][0-9]*|0)(\\.([1-9][0-9]*|0))*$",
7894 REG_EXTENDED | REG_NOSUB) != 0)
7895 abort ();
7896 rresult = regexec (&r, v1, 0, NULL, 0);
7897 if (rresult == REG_NOMATCH)
7898 fatal_error ("invalid version number %qs", v1);
7899 else if (rresult != 0)
7900 abort ();
7901 rresult = regexec (&r, v2, 0, NULL, 0);
7902 if (rresult == REG_NOMATCH)
7903 fatal_error ("invalid version number %qs", v2);
7904 else if (rresult != 0)
7905 abort ();
7907 return strverscmp (v1, v2);
7911 /* version_compare built-in spec function.
7913 This takes an argument of the following form:
7915 <comparison-op> <arg1> [<arg2>] <switch> <result>
7917 and produces "result" if the comparison evaluates to true,
7918 and nothing if it doesn't.
7920 The supported <comparison-op> values are:
7922 >= true if switch is a later (or same) version than arg1
7923 !> opposite of >=
7924 < true if switch is an earlier version than arg1
7925 !< opposite of <
7926 >< true if switch is arg1 or later, and earlier than arg2
7927 <> true if switch is earlier than arg1 or is arg2 or later
7929 If the switch is not present, the condition is false unless
7930 the first character of the <comparison-op> is '!'.
7932 For example,
7933 %:version-compare(>= 10.3 mmacosx-version-min= -lmx)
7934 adds -lmx if -mmacosx-version-min=10.3.9 was passed. */
7936 static const char *
7937 version_compare_spec_function (int argc, const char **argv)
7939 int comp1, comp2;
7940 size_t switch_len;
7941 const char *switch_value = NULL;
7942 int nargs = 1, i;
7943 bool result;
7945 if (argc < 3)
7946 fatal_error ("too few arguments to %%:version-compare");
7947 if (argv[0][0] == '\0')
7948 abort ();
7949 if ((argv[0][1] == '<' || argv[0][1] == '>') && argv[0][0] != '!')
7950 nargs = 2;
7951 if (argc != nargs + 3)
7952 fatal_error ("too many arguments to %%:version-compare");
7954 switch_len = strlen (argv[nargs + 1]);
7955 for (i = 0; i < n_switches; i++)
7956 if (!strncmp (switches[i].part1, argv[nargs + 1], switch_len)
7957 && check_live_switch (i, switch_len))
7958 switch_value = switches[i].part1 + switch_len;
7960 if (switch_value == NULL)
7961 comp1 = comp2 = -1;
7962 else
7964 comp1 = compare_version_strings (switch_value, argv[1]);
7965 if (nargs == 2)
7966 comp2 = compare_version_strings (switch_value, argv[2]);
7967 else
7968 comp2 = -1; /* This value unused. */
7971 switch (argv[0][0] << 8 | argv[0][1])
7973 case '>' << 8 | '=':
7974 result = comp1 >= 0;
7975 break;
7976 case '!' << 8 | '<':
7977 result = comp1 >= 0 || switch_value == NULL;
7978 break;
7979 case '<' << 8:
7980 result = comp1 < 0;
7981 break;
7982 case '!' << 8 | '>':
7983 result = comp1 < 0 || switch_value == NULL;
7984 break;
7985 case '>' << 8 | '<':
7986 result = comp1 >= 0 && comp2 < 0;
7987 break;
7988 case '<' << 8 | '>':
7989 result = comp1 < 0 || comp2 >= 0;
7990 break;
7992 default:
7993 fatal_error ("unknown operator %qs in %%:version-compare", argv[0]);
7995 if (! result)
7996 return NULL;
7998 return argv[nargs + 2];
8001 /* %:include builtin spec function. This differs from %include in that it
8002 can be nested inside a spec, and thus be conditionalized. It takes
8003 one argument, the filename, and looks for it in the startfile path.
8004 The result is always NULL, i.e. an empty expansion. */
8006 static const char *
8007 include_spec_function (int argc, const char **argv)
8009 char *file;
8011 if (argc != 1)
8012 abort ();
8014 file = find_a_file (&startfile_prefixes, argv[0], R_OK, true);
8015 read_specs (file ? file : argv[0], FALSE);
8017 return NULL;
8020 /* %:find-file spec function. This function replaces its argument by
8021 the file found thru find_file, that is the -print-file-name gcc
8022 program option. */
8023 static const char *
8024 find_file_spec_function (int argc, const char **argv)
8026 const char *file;
8028 if (argc != 1)
8029 abort ();
8031 file = find_file (argv[0]);
8032 return file;
8036 /* %:find-plugindir spec function. This function replaces its argument
8037 by the -iplugindir=<dir> option. `dir' is found thru find_file, that
8038 is the -print-file-name gcc program option. */
8039 static const char *
8040 find_plugindir_spec_function (int argc, const char **argv ATTRIBUTE_UNUSED)
8042 const char *option;
8044 if (argc != 0)
8045 abort ();
8047 option = concat ("-iplugindir=", find_file ("plugin"), NULL);
8048 return option;
8052 /* %:print-asm-header spec function. Print a banner to say that the
8053 following output is from the assembler. */
8055 static const char *
8056 print_asm_header_spec_function (int arg ATTRIBUTE_UNUSED,
8057 const char **argv ATTRIBUTE_UNUSED)
8059 printf (_("Assembler options\n=================\n\n"));
8060 printf (_("Use \"-Wa,OPTION\" to pass \"OPTION\" to the assembler.\n\n"));
8061 fflush (stdout);
8062 return NULL;
8065 /* Compute a timestamp to initialize flag_random_seed. */
8067 static unsigned
8068 get_local_tick (void)
8070 unsigned ret = 0;
8072 /* Get some more or less random data. */
8073 #ifdef HAVE_GETTIMEOFDAY
8075 struct timeval tv;
8077 gettimeofday (&tv, NULL);
8078 ret = tv.tv_sec * 1000 + tv.tv_usec / 1000;
8080 #else
8082 time_t now = time (NULL);
8084 if (now != (time_t)-1)
8085 ret = (unsigned) now;
8087 #endif
8089 return ret;
8092 /* %:compare-debug-dump-opt spec function. Save the last argument,
8093 expected to be the last -fdump-final-insns option, or generate a
8094 temporary. */
8096 static const char *
8097 compare_debug_dump_opt_spec_function (int arg,
8098 const char **argv ATTRIBUTE_UNUSED)
8100 const char *ret;
8101 char *name;
8102 int which;
8103 static char random_seed[HOST_BITS_PER_WIDE_INT / 4 + 3];
8105 if (arg != 0)
8106 fatal_error ("too many arguments to %%:compare-debug-dump-opt");
8108 do_spec_2 ("%{fdump-final-insns=*:%*}");
8109 do_spec_1 (" ", 0, NULL);
8111 if (VEC_length (const_char_p, argbuf) > 0
8112 && strcmp (argv[VEC_length (const_char_p, argbuf) - 1], "."))
8114 if (!compare_debug)
8115 return NULL;
8117 name = xstrdup (argv[VEC_length (const_char_p, argbuf) - 1]);
8118 ret = NULL;
8120 else
8122 const char *ext = NULL;
8124 if (VEC_length (const_char_p, argbuf) > 0)
8126 do_spec_2 ("%{o*:%*}%{!o:%{!S:%b%O}%{S:%b.s}}");
8127 ext = ".gkd";
8129 else if (!compare_debug)
8130 return NULL;
8131 else
8132 do_spec_2 ("%g.gkd");
8134 do_spec_1 (" ", 0, NULL);
8136 gcc_assert (VEC_length (const_char_p, argbuf) > 0);
8138 name = concat (VEC_last (const_char_p, argbuf), ext, NULL);
8140 ret = concat ("-fdump-final-insns=", name, NULL);
8143 which = compare_debug < 0;
8144 debug_check_temp_file[which] = name;
8146 if (!which)
8148 unsigned HOST_WIDE_INT value = get_local_tick () ^ getpid ();
8150 sprintf (random_seed, HOST_WIDE_INT_PRINT_HEX, value);
8153 if (*random_seed)
8154 ret = concat ("%{!frandom-seed=*:-frandom-seed=", random_seed, "} ",
8155 ret, NULL);
8157 if (which)
8158 *random_seed = 0;
8160 return ret;
8163 static const char *debug_auxbase_opt;
8165 /* %:compare-debug-self-opt spec function. Expands to the options
8166 that are to be passed in the second compilation of
8167 compare-debug. */
8169 static const char *
8170 compare_debug_self_opt_spec_function (int arg,
8171 const char **argv ATTRIBUTE_UNUSED)
8173 if (arg != 0)
8174 fatal_error ("too many arguments to %%:compare-debug-self-opt");
8176 if (compare_debug >= 0)
8177 return NULL;
8179 do_spec_2 ("%{c|S:%{o*:%*}}");
8180 do_spec_1 (" ", 0, NULL);
8182 if (VEC_length (const_char_p, argbuf) > 0)
8183 debug_auxbase_opt = concat ("-auxbase-strip ",
8184 VEC_last (const_char_p, argbuf),
8185 NULL);
8186 else
8187 debug_auxbase_opt = NULL;
8189 return concat ("\
8190 %<o %<MD %<MMD %<MF* %<MG %<MP %<MQ* %<MT* \
8191 %<fdump-final-insns=* -w -S -o %j \
8192 %{!fcompare-debug-second:-fcompare-debug-second} \
8193 ", compare_debug_opt, NULL);
8196 /* %:compare-debug-auxbase-opt spec function. Expands to the auxbase
8197 options that are to be passed in the second compilation of
8198 compare-debug. It expects, as an argument, the basename of the
8199 current input file name, with the .gk suffix appended to it. */
8201 static const char *
8202 compare_debug_auxbase_opt_spec_function (int arg,
8203 const char **argv)
8205 char *name;
8206 int len;
8208 if (arg == 0)
8209 fatal_error ("too few arguments to %%:compare-debug-auxbase-opt");
8211 if (arg != 1)
8212 fatal_error ("too many arguments to %%:compare-debug-auxbase-opt");
8214 if (compare_debug >= 0)
8215 return NULL;
8217 len = strlen (argv[0]);
8218 if (len < 3 || strcmp (argv[0] + len - 3, ".gk") != 0)
8219 fatal_error ("argument to %%:compare-debug-auxbase-opt "
8220 "does not end in .gk");
8222 if (debug_auxbase_opt)
8223 return debug_auxbase_opt;
8225 #define OPT "-auxbase "
8227 len -= 3;
8228 name = (char*) xmalloc (sizeof (OPT) + len);
8229 memcpy (name, OPT, sizeof (OPT) - 1);
8230 memcpy (name + sizeof (OPT) - 1, argv[0], len);
8231 name[sizeof (OPT) - 1 + len] = '\0';
8233 #undef OPT
8235 return name;
8238 /* %:pass-through-libs spec function. Finds all -l options and input
8239 file names in the lib spec passed to it, and makes a list of them
8240 prepended with the plugin option to cause them to be passed through
8241 to the final link after all the new object files have been added. */
8243 const char *
8244 pass_through_libs_spec_func (int argc, const char **argv)
8246 char *prepended = xstrdup (" ");
8247 int n;
8248 /* Shlemiel the painter's algorithm. Innately horrible, but at least
8249 we know that there will never be more than a handful of strings to
8250 concat, and it's only once per run, so it's not worth optimising. */
8251 for (n = 0; n < argc; n++)
8253 char *old = prepended;
8254 /* Anything that isn't an option is a full path to an output
8255 file; pass it through if it ends in '.a'. Among options,
8256 pass only -l. */
8257 if (argv[n][0] == '-' && argv[n][1] == 'l')
8259 const char *lopt = argv[n] + 2;
8260 /* Handle both joined and non-joined -l options. If for any
8261 reason there's a trailing -l with no joined or following
8262 arg just discard it. */
8263 if (!*lopt && ++n >= argc)
8264 break;
8265 else if (!*lopt)
8266 lopt = argv[n];
8267 prepended = concat (prepended, "-plugin-opt=-pass-through=-l",
8268 lopt, " ", NULL);
8270 else if (!strcmp (".a", argv[n] + strlen (argv[n]) - 2))
8272 prepended = concat (prepended, "-plugin-opt=-pass-through=",
8273 argv[n], " ", NULL);
8275 if (prepended != old)
8276 free (old);
8278 return prepended;