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,
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
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
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". */
35 #include "coretypes.h"
36 #include "multilib.h" /* before tm.h */
43 #include "diagnostic.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
56 /* By default there is no special suffix for host executables. */
57 #ifdef HOST_EXECUTABLE_SUFFIX
58 #define HAVE_HOST_EXECUTABLE_SUFFIX
60 #define HOST_EXECUTABLE_SUFFIX ""
63 /* By default, the suffix for target object files is ".o". */
64 #ifdef TARGET_OBJECT_SUFFIX
65 #define HAVE_TARGET_OBJECT_SUFFIX
67 #define TARGET_OBJECT_SUFFIX ".o"
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"
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. */
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
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
;
121 static const char *target_system_root
= 0;
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 */
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";
167 static const char *cross_compile
= "0";
170 /* Greatest exit code of sub-processes that has been encountered up to
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
183 static struct obstack collect_obstack
;
185 /* Forward declaration for prototypes. */
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 *,
198 static void xputenv (const char *);
199 static void putenv_from_prefixes (const struct path_prefix
*, const char *,
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 *,
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 *,
252 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
253 static const char *convert_filename (const char *, int, int);
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).
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.
306 like %g, but if -pipe is in effect, expands simply to "-".
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.)
312 like %g, but generates a new temporary file name even if %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.
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
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
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".
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
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
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
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
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
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
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
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. */
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 ""
485 /* config.h can define CPP_SPEC to provide extra args to the C preprocessor
486 or extra switch-translations. */
491 /* config.h can define CC1_SPEC to provide extra args to cc1 and cc1plus
492 or extra switch-translations. */
497 /* config.h can define CC1PLUS_SPEC to provide extra args to cc1plus
498 or extra switch-translations. */
500 #define CC1PLUS_SPEC ""
503 /* config.h can define LINK_SPEC to provide extra args to the linker
504 or extra switch-translations. */
509 /* config.h can define LIB_SPEC to override the default libraries. */
511 #define LIB_SPEC "%{!shared:%{g*:-lg} %{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p}}"
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}"
525 #define MFLIB_SPEC "%{fmudflap|fmudflapth: -export-dynamic}"
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
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
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"
547 #define LIBGCC_SPEC "-lgcc"
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}}}"
557 /* config.h can define ENDFILE_SPEC to override the default crtn files. */
559 #define ENDFILE_SPEC ""
563 #define LINKER_NAME "collect2"
566 #ifdef HAVE_AS_DEBUG_PREFIX_MAP
567 #define ASM_MAP " %{fdebug-prefix-map=*:--debug-prefix-map %*}"
572 /* Define ASM_DEBUG_SPEC to be a spec suitable for translating '-g'
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)
582 # if defined(DBX_DEBUGGING_INFO) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
583 # define ASM_DEBUG_SPEC "%{g*:%{!g0:--gstabs}}" ASM_MAP
585 # if defined(DWARF2_DEBUGGING_INFO) && defined(HAVE_AS_GDWARF2_DEBUG_FLAG)
586 # define ASM_DEBUG_SPEC "%{g*:%{!g0:--gdwarf2}}" ASM_MAP
590 #ifndef ASM_DEBUG_SPEC
591 # define ASM_DEBUG_SPEC ""
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"
603 #ifndef LINK_SSP_SPEC
604 #ifdef TARGET_LIBC_PROVIDES_SSP
605 #define LINK_SSP_SPEC "%{fstack-protector:}"
607 #define LINK_SSP_SPEC "%{fstack-protector|fstack-protector-all:-lssp_nonshared -lssp}"
611 #ifndef LINK_PIE_SPEC
613 #define LINK_PIE_SPEC "%{pie:-pie} "
615 #define LINK_PIE_SPEC "%{pie:} "
619 #ifndef LINK_BUILDID_SPEC
620 # if defined(HAVE_LD_BUILDID) && defined(ENABLE_LD_BUILDID)
621 # define LINK_BUILDID_SPEC "%{!r:--build-id} "
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 "}"
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 ""
644 #define LINK_PLUGIN_SPEC \
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))}} \
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}"
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
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:\
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 %{fgnu-tm:%:include(libitm.spec)%(link_itm)}\
679 %(mflib) " STACK_SPLIT_SPEC "\
680 %{fprofile-arcs|fprofile-generate*|coverage:-lgcov}\
681 %{!nostdlib:%{!nodefaultlibs:%(link_ssp) %(link_gcc_c_sequence)}}\
682 %{!nostdlib:%{!nostartfiles:%E}} %{T*} }}}}}}"
685 #ifndef LINK_LIBGCC_SPEC
686 /* Generate -L options for startfile prefix list. */
687 # define LINK_LIBGCC_SPEC "%D"
690 #ifndef STARTFILE_PREFIX_SPEC
691 # define STARTFILE_PREFIX_SPEC ""
695 # define SYSROOT_SPEC "--sysroot=%R"
698 #ifndef SYSROOT_SUFFIX_SPEC
699 # define SYSROOT_SUFFIX_SPEC ""
702 #ifndef SYSROOT_HEADERS_SUFFIX_SPEC
703 # define SYSROOT_HEADERS_SUFFIX_SPEC ""
706 static const char *asm_debug
;
707 static const char *cpp_spec
= CPP_SPEC
;
708 static const char *cc1_spec
= CC1_SPEC
;
709 static const char *cc1plus_spec
= CC1PLUS_SPEC
;
710 static const char *link_gcc_c_sequence_spec
= LINK_GCC_C_SEQUENCE_SPEC
;
711 static const char *link_ssp_spec
= LINK_SSP_SPEC
;
712 static const char *asm_spec
= ASM_SPEC
;
713 static const char *asm_final_spec
= ASM_FINAL_SPEC
;
714 static const char *link_spec
= LINK_SPEC
;
715 static const char *lib_spec
= LIB_SPEC
;
716 static const char *mfwrap_spec
= MFWRAP_SPEC
;
717 static const char *mflib_spec
= MFLIB_SPEC
;
718 static const char *link_gomp_spec
= "";
719 static const char *libgcc_spec
= LIBGCC_SPEC
;
720 static const char *endfile_spec
= ENDFILE_SPEC
;
721 static const char *startfile_spec
= STARTFILE_SPEC
;
722 static const char *linker_name_spec
= LINKER_NAME
;
723 static const char *linker_plugin_file_spec
= "";
724 static const char *lto_wrapper_spec
= "";
725 static const char *lto_gcc_spec
= "";
726 static const char *link_command_spec
= LINK_COMMAND_SPEC
;
727 static const char *link_libgcc_spec
= LINK_LIBGCC_SPEC
;
728 static const char *startfile_prefix_spec
= STARTFILE_PREFIX_SPEC
;
729 static const char *sysroot_spec
= SYSROOT_SPEC
;
730 static const char *sysroot_suffix_spec
= SYSROOT_SUFFIX_SPEC
;
731 static const char *sysroot_hdrs_suffix_spec
= SYSROOT_HEADERS_SUFFIX_SPEC
;
732 static const char *self_spec
= "";
734 /* Standard options to cpp, cc1, and as, to reduce duplication in specs.
735 There should be no need to override these in target dependent files,
736 but we need to copy them to the specs file so that newer versions
737 of the GCC driver can correctly drive older tool chains with the
738 appropriate -B options. */
740 /* When cpplib handles traditional preprocessing, get rid of this, and
741 call cc1 (or cc1obj in objc/lang-specs.h) from the main specs so
742 that we default the front end language better. */
743 static const char *trad_capable_cpp
=
744 "cc1 -E %{traditional|traditional-cpp:-traditional-cpp}";
746 /* We don't wrap .d files in %W{} since a missing .d file, and
747 therefore no dependency entry, confuses make into thinking a .o
748 file that happens to exist is up-to-date. */
749 static const char *cpp_unique_options
=
750 "%{!Q:-quiet} %{nostdinc*} %{C} %{CC} %{v} %{I*&F*} %{P} %I\
751 %{MD:-MD %{!o:%b.d}%{o*:%.d%*}}\
752 %{MMD:-MMD %{!o:%b.d}%{o*:%.d%*}}\
753 %{M} %{MM} %{MF*} %{MG} %{MP} %{MQ*} %{MT*}\
754 %{!E:%{!M:%{!MM:%{!MT:%{!MQ:%{MD|MMD:%{o*:-MQ %*}}}}}}}\
755 %{remap} %{g3|ggdb3|gstabs3|gcoff3|gxcoff3|gvms3:-dD}\
756 %{!iplugindir*:%{fplugin*:%:find-plugindir()}}\
757 %{H} %C %{D*&U*&A*} %{i*} %Z %i\
758 %{fmudflap:-D_MUDFLAP -include mf-runtime.h}\
759 %{fmudflapth:-D_MUDFLAP -D_MUDFLAPTH -include mf-runtime.h}\
762 /* This contains cpp options which are common with cc1_options and are passed
763 only when preprocessing only to avoid duplication. We pass the cc1 spec
764 options to the preprocessor so that it the cc1 spec may manipulate
765 options used to set target flags. Those special target flags settings may
766 in turn cause preprocessor symbols to be defined specially. */
767 static const char *cpp_options
=
768 "%(cpp_unique_options) %1 %{m*} %{std*&ansi&trigraphs} %{W*&pedantic*} %{w}\
769 %{f*} %{g*:%{!g0:%{g*} %{!fno-working-directory:-fworking-directory}}} %{O*}\
770 %{undef} %{save-temps*:-fpch-preprocess}";
772 /* This contains cpp options which are not passed when the preprocessor
773 output will be used by another program. */
774 static const char *cpp_debug_options
= "%{d*}";
776 /* NB: This is shared amongst all front-ends, except for Ada. */
777 static const char *cc1_options
=
778 "%{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\
779 %{!iplugindir*:%{fplugin*:%:find-plugindir()}}\
780 %1 %{!Q:-quiet} %{!dumpbase:-dumpbase %B} %{d*} %{m*} %{aux-info*}\
781 %{fcompare-debug-second:%:compare-debug-auxbase-opt(%b)} \
782 %{!fcompare-debug-second:%{c|S:%{o*:-auxbase-strip %*}%{!o*:-auxbase %b}}}%{!c:%{!S:-auxbase %b}} \
783 %{g*} %{O*} %{W*&pedantic*} %{w} %{std*&ansi&trigraphs}\
784 %{v:-version} %{pg:-p} %{p} %{f*} %{undef}\
785 %{Qn:-fno-ident} %{Qy:} %{-help:--help}\
786 %{-target-help:--target-help}\
787 %{-version:--version}\
788 %{-help=*:--help=%*}\
789 %{!fsyntax-only:%{S:%W{o*}%{!o*:-o %b.s}}}\
790 %{fsyntax-only:-o %j} %{-param*}\
791 %{fmudflap|fmudflapth:-fno-builtin -fno-merge-constants}\
792 %{coverage:-fprofile-arcs -ftest-coverage}";
794 static const char *asm_options
=
795 "%{-target-help:%:print-asm-header()} "
797 /* If GNU AS is used, then convert -w (no warnings), -I, and -v
798 to the assembler equivalents. */
799 "%{v} %{w:-W} %{I*} "
801 "%a %Y %{c:%W{o*}%{!o*:-o %w%b%O}}%{!c:-o %d%w%u%O}";
803 static const char *invoke_as
=
804 #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT
806 %{fcompare-debug=*|fdump-final-insns=*:%:compare-debug-dump-opt()}\
807 %{!S:-o %|.s |\n as %(asm_options) %|.s %A }\
811 %{fcompare-debug=*|fdump-final-insns=*:%:compare-debug-dump-opt()}\
812 %{!S:-o %|.s |\n as %(asm_options) %m.s %A }\
816 /* Some compilers have limits on line lengths, and the multilib_select
817 and/or multilib_matches strings can be very long, so we build them at
819 static struct obstack multilib_obstack
;
820 static const char *multilib_select
;
821 static const char *multilib_matches
;
822 static const char *multilib_defaults
;
823 static const char *multilib_exclusions
;
825 /* Check whether a particular argument is a default argument. */
827 #ifndef MULTILIB_DEFAULTS
828 #define MULTILIB_DEFAULTS { "" }
831 static const char *const multilib_defaults_raw
[] = MULTILIB_DEFAULTS
;
833 #ifndef DRIVER_SELF_SPECS
834 #define DRIVER_SELF_SPECS ""
837 /* Adding -fopenmp should imply pthreads. This is particularly important
838 for targets that use different start files and suchlike. */
839 #ifndef GOMP_SELF_SPECS
840 #define GOMP_SELF_SPECS "%{fopenmp|ftree-parallelize-loops=*: -pthread}"
843 /* Likewise for -fgnu-tm. */
844 #ifndef GTM_SELF_SPECS
845 #define GTM_SELF_SPECS "%{fgnu-tm: -pthread}"
848 static const char *const driver_self_specs
[] = {
849 "%{fdump-final-insns:-fdump-final-insns=.} %<fdump-final-insns",
850 DRIVER_SELF_SPECS
, CONFIGURE_SPECS
, GOMP_SELF_SPECS
, GTM_SELF_SPECS
853 #ifndef OPTION_DEFAULT_SPECS
854 #define OPTION_DEFAULT_SPECS { "", "" }
863 static const struct default_spec
864 option_default_specs
[] = { OPTION_DEFAULT_SPECS
};
868 struct user_specs
*next
;
869 const char *filename
;
872 static struct user_specs
*user_specs_head
, *user_specs_tail
;
875 /* Record the mapping from file suffixes for compilation specs. */
879 const char *suffix
; /* Use this compiler for input files
880 whose names end in this suffix. */
882 const char *spec
; /* To use this compiler, run this spec. */
884 const char *cpp_spec
; /* If non-NULL, substitute this spec
885 for `%C', rather than the usual
887 const int combinable
; /* If nonzero, compiler can deal with
888 multiple source files at once (IMA). */
889 const int needs_preprocessing
; /* If nonzero, source files need to
890 be run through a preprocessor. */
893 /* Pointer to a vector of `struct compiler' that gives the spec for
894 compiling a file, based on its suffix.
895 A file that does not end in any of these suffixes will be passed
896 unchanged to the loader and nothing else will be done to it.
898 An entry containing two 0s is used to terminate the vector.
900 If multiple entries match a file, the last matching one is used. */
902 static struct compiler
*compilers
;
904 /* Number of entries in `compilers', not counting the null terminator. */
906 static int n_compilers
;
908 /* The default list of file name suffixes and their compilation specs. */
910 static const struct compiler default_compilers
[] =
912 /* Add lists of suffixes of known languages here. If those languages
913 were not present when we built the driver, we will hit these copies
914 and be given a more meaningful error than "file not used since
915 linking is not done". */
916 {".m", "#Objective-C", 0, 0, 0}, {".mi", "#Objective-C", 0, 0, 0},
917 {".mm", "#Objective-C++", 0, 0, 0}, {".M", "#Objective-C++", 0, 0, 0},
918 {".mii", "#Objective-C++", 0, 0, 0},
919 {".cc", "#C++", 0, 0, 0}, {".cxx", "#C++", 0, 0, 0},
920 {".cpp", "#C++", 0, 0, 0}, {".cp", "#C++", 0, 0, 0},
921 {".c++", "#C++", 0, 0, 0}, {".C", "#C++", 0, 0, 0},
922 {".CPP", "#C++", 0, 0, 0}, {".ii", "#C++", 0, 0, 0},
923 {".ads", "#Ada", 0, 0, 0}, {".adb", "#Ada", 0, 0, 0},
924 {".f", "#Fortran", 0, 0, 0}, {".F", "#Fortran", 0, 0, 0},
925 {".for", "#Fortran", 0, 0, 0}, {".FOR", "#Fortran", 0, 0, 0},
926 {".ftn", "#Fortran", 0, 0, 0}, {".FTN", "#Fortran", 0, 0, 0},
927 {".fpp", "#Fortran", 0, 0, 0}, {".FPP", "#Fortran", 0, 0, 0},
928 {".f90", "#Fortran", 0, 0, 0}, {".F90", "#Fortran", 0, 0, 0},
929 {".f95", "#Fortran", 0, 0, 0}, {".F95", "#Fortran", 0, 0, 0},
930 {".f03", "#Fortran", 0, 0, 0}, {".F03", "#Fortran", 0, 0, 0},
931 {".f08", "#Fortran", 0, 0, 0}, {".F08", "#Fortran", 0, 0, 0},
932 {".r", "#Ratfor", 0, 0, 0},
933 {".p", "#Pascal", 0, 0, 0}, {".pas", "#Pascal", 0, 0, 0},
934 {".java", "#Java", 0, 0, 0}, {".class", "#Java", 0, 0, 0},
935 {".zip", "#Java", 0, 0, 0}, {".jar", "#Java", 0, 0, 0},
936 {".go", "#Go", 0, 1, 0},
937 /* Next come the entries for C. */
938 {".c", "@c", 0, 0, 1},
940 /* cc1 has an integrated ISO C preprocessor. We should invoke the
941 external preprocessor if -save-temps is given. */
942 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\
945 %eGNU C no longer supports -traditional without -E}\
946 %{save-temps*|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
947 %(cpp_options) -o %{save-temps*:%b.i} %{!save-temps*:%g.i} \n\
948 cc1 -fpreprocessed %{save-temps*:%b.i} %{!save-temps*:%g.i} \
950 %{!save-temps*:%{!traditional-cpp:%{!no-integrated-cpp:\
951 cc1 %(cpp_unique_options) %(cc1_options)}}}\
952 %{!fsyntax-only:%(invoke_as)}}}}", 0, 0, 1},
954 "%{!E:%e-E or -x required when input is from standard input}\
955 %(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)", 0, 0, 0},
956 {".h", "@c-header", 0, 0, 0},
958 /* cc1 has an integrated ISO C preprocessor. We should invoke the
959 external preprocessor if -save-temps is given. */
960 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\
962 %{save-temps*|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
963 %(cpp_options) -o %{save-temps*:%b.i} %{!save-temps*:%g.i} \n\
964 cc1 -fpreprocessed %{save-temps*:%b.i} %{!save-temps*:%g.i} \
966 %{!fdump-ada-spec*:-o %g.s %{!o*:--output-pch=%i.gch}\
967 %W{o*:--output-pch=%*}}%V}\
968 %{!save-temps*:%{!traditional-cpp:%{!no-integrated-cpp:\
969 cc1 %(cpp_unique_options) %(cc1_options)\
970 %{!fdump-ada-spec*:-o %g.s %{!o*:--output-pch=%i.gch}\
971 %W{o*:--output-pch=%*}}%V}}}}}}", 0, 0, 0},
972 {".i", "@cpp-output", 0, 0, 0},
974 "%{!M:%{!MM:%{!E:cc1 -fpreprocessed %i %(cc1_options) %{!fsyntax-only:%(invoke_as)}}}}", 0, 0, 0},
975 {".s", "@assembler", 0, 0, 0},
977 "%{!M:%{!MM:%{!E:%{!S:as %(asm_debug) %(asm_options) %i %A }}}}", 0, 0, 0},
978 {".sx", "@assembler-with-cpp", 0, 0, 0},
979 {".S", "@assembler-with-cpp", 0, 0, 0},
980 {"@assembler-with-cpp",
981 #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT
982 "%(trad_capable_cpp) -lang-asm %(cpp_options) -fno-directives-only\
983 %{E|M|MM:%(cpp_debug_options)}\
984 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\
985 as %(asm_debug) %(asm_options) %|.s %A }}}}"
987 "%(trad_capable_cpp) -lang-asm %(cpp_options) -fno-directives-only\
988 %{E|M|MM:%(cpp_debug_options)}\
989 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\
990 as %(asm_debug) %(asm_options) %m.s %A }}}}"
995 /* Mark end of table. */
999 /* Number of elements in default_compilers, not counting the terminator. */
1001 static const int n_default_compilers
= ARRAY_SIZE (default_compilers
) - 1;
1003 typedef char *char_p
; /* For DEF_VEC_P. */
1005 DEF_VEC_ALLOC_P(char_p
,heap
);
1007 /* A vector of options to give to the linker.
1008 These options are accumulated by %x,
1009 and substituted into the linker command with %X. */
1010 static VEC(char_p
,heap
) *linker_options
;
1012 /* A vector of options to give to the assembler.
1013 These options are accumulated by -Wa,
1014 and substituted into the assembler command with %Y. */
1015 static VEC(char_p
,heap
) *assembler_options
;
1017 /* A vector of options to give to the preprocessor.
1018 These options are accumulated by -Wp,
1019 and substituted into the preprocessor command with %Z. */
1020 static VEC(char_p
,heap
) *preprocessor_options
;
1023 skip_whitespace (char *p
)
1027 /* A fully-blank line is a delimiter in the SPEC file and shouldn't
1028 be considered whitespace. */
1029 if (p
[0] == '\n' && p
[1] == '\n' && p
[2] == '\n')
1031 else if (*p
== '\n' || *p
== ' ' || *p
== '\t')
1045 /* Structures to keep track of prefixes to try when looking for files. */
1049 const char *prefix
; /* String to prepend to the path. */
1050 struct prefix_list
*next
; /* Next in linked list. */
1051 int require_machine_suffix
; /* Don't use without machine_suffix. */
1052 /* 2 means try both machine_suffix and just_machine_suffix. */
1053 int priority
; /* Sort key - priority within list. */
1054 int os_multilib
; /* 1 if OS multilib scheme should be used,
1055 0 for GCC multilib scheme. */
1060 struct prefix_list
*plist
; /* List of prefixes to try */
1061 int max_len
; /* Max length of a prefix in PLIST */
1062 const char *name
; /* Name of this list (used in config stuff) */
1065 /* List of prefixes to try when looking for executables. */
1067 static struct path_prefix exec_prefixes
= { 0, 0, "exec" };
1069 /* List of prefixes to try when looking for startup (crt0) files. */
1071 static struct path_prefix startfile_prefixes
= { 0, 0, "startfile" };
1073 /* List of prefixes to try when looking for include files. */
1075 static struct path_prefix include_prefixes
= { 0, 0, "include" };
1077 /* Suffix to attach to directories searched for commands.
1078 This looks like `MACHINE/VERSION/'. */
1080 static const char *machine_suffix
= 0;
1082 /* Suffix to attach to directories searched for commands.
1083 This is just `MACHINE/'. */
1085 static const char *just_machine_suffix
= 0;
1087 /* Adjusted value of GCC_EXEC_PREFIX envvar. */
1089 static const char *gcc_exec_prefix
;
1091 /* Adjusted value of standard_libexec_prefix. */
1093 static const char *gcc_libexec_prefix
;
1095 /* Default prefixes to attach to command names. */
1097 #ifndef STANDARD_STARTFILE_PREFIX_1
1098 #define STANDARD_STARTFILE_PREFIX_1 "/lib/"
1100 #ifndef STANDARD_STARTFILE_PREFIX_2
1101 #define STANDARD_STARTFILE_PREFIX_2 "/usr/lib/"
1104 #ifdef CROSS_DIRECTORY_STRUCTURE /* Don't use these prefixes for a cross compiler. */
1105 #undef MD_EXEC_PREFIX
1106 #undef MD_STARTFILE_PREFIX
1107 #undef MD_STARTFILE_PREFIX_1
1110 /* If no prefixes defined, use the null string, which will disable them. */
1111 #ifndef MD_EXEC_PREFIX
1112 #define MD_EXEC_PREFIX ""
1114 #ifndef MD_STARTFILE_PREFIX
1115 #define MD_STARTFILE_PREFIX ""
1117 #ifndef MD_STARTFILE_PREFIX_1
1118 #define MD_STARTFILE_PREFIX_1 ""
1121 /* These directories are locations set at configure-time based on the
1122 --prefix option provided to configure. Their initializers are
1123 defined in Makefile.in. These paths are not *directly* used when
1124 gcc_exec_prefix is set because, in that case, we know where the
1125 compiler has been installed, and use paths relative to that
1126 location instead. */
1127 static const char *const standard_exec_prefix
= STANDARD_EXEC_PREFIX
;
1128 static const char *const standard_libexec_prefix
= STANDARD_LIBEXEC_PREFIX
;
1129 static const char *const standard_bindir_prefix
= STANDARD_BINDIR_PREFIX
;
1130 static const char *const standard_startfile_prefix
= STANDARD_STARTFILE_PREFIX
;
1132 /* For native compilers, these are well-known paths containing
1133 components that may be provided by the system. For cross
1134 compilers, these paths are not used. */
1135 static const char *md_exec_prefix
= MD_EXEC_PREFIX
;
1136 static const char *md_startfile_prefix
= MD_STARTFILE_PREFIX
;
1137 static const char *md_startfile_prefix_1
= MD_STARTFILE_PREFIX_1
;
1138 static const char *const standard_startfile_prefix_1
1139 = STANDARD_STARTFILE_PREFIX_1
;
1140 static const char *const standard_startfile_prefix_2
1141 = STANDARD_STARTFILE_PREFIX_2
;
1143 /* A relative path to be used in finding the location of tools
1144 relative to the driver. */
1145 static const char *const tooldir_base_prefix
= TOOLDIR_BASE_PREFIX
;
1147 /* Subdirectory to use for locating libraries. Set by
1148 set_multilib_dir based on the compilation options. */
1150 static const char *multilib_dir
;
1152 /* Subdirectory to use for locating libraries in OS conventions. Set by
1153 set_multilib_dir based on the compilation options. */
1155 static const char *multilib_os_dir
;
1157 /* Structure to keep track of the specs that have been defined so far.
1158 These are accessed using %(specname) in a compiler or link
1163 /* The following 2 fields must be first */
1164 /* to allow EXTRA_SPECS to be initialized */
1165 const char *name
; /* name of the spec. */
1166 const char *ptr
; /* available ptr if no static pointer */
1168 /* The following fields are not initialized */
1169 /* by EXTRA_SPECS */
1170 const char **ptr_spec
; /* pointer to the spec itself. */
1171 struct spec_list
*next
; /* Next spec in linked list. */
1172 int name_len
; /* length of the name */
1173 int alloc_p
; /* whether string was allocated */
1176 #define INIT_STATIC_SPEC(NAME,PTR) \
1177 { NAME, NULL, PTR, (struct spec_list *) 0, sizeof (NAME) - 1, 0 }
1179 /* List of statically defined specs. */
1180 static struct spec_list static_specs
[] =
1182 INIT_STATIC_SPEC ("asm", &asm_spec
),
1183 INIT_STATIC_SPEC ("asm_debug", &asm_debug
),
1184 INIT_STATIC_SPEC ("asm_final", &asm_final_spec
),
1185 INIT_STATIC_SPEC ("asm_options", &asm_options
),
1186 INIT_STATIC_SPEC ("invoke_as", &invoke_as
),
1187 INIT_STATIC_SPEC ("cpp", &cpp_spec
),
1188 INIT_STATIC_SPEC ("cpp_options", &cpp_options
),
1189 INIT_STATIC_SPEC ("cpp_debug_options", &cpp_debug_options
),
1190 INIT_STATIC_SPEC ("cpp_unique_options", &cpp_unique_options
),
1191 INIT_STATIC_SPEC ("trad_capable_cpp", &trad_capable_cpp
),
1192 INIT_STATIC_SPEC ("cc1", &cc1_spec
),
1193 INIT_STATIC_SPEC ("cc1_options", &cc1_options
),
1194 INIT_STATIC_SPEC ("cc1plus", &cc1plus_spec
),
1195 INIT_STATIC_SPEC ("link_gcc_c_sequence", &link_gcc_c_sequence_spec
),
1196 INIT_STATIC_SPEC ("link_ssp", &link_ssp_spec
),
1197 INIT_STATIC_SPEC ("endfile", &endfile_spec
),
1198 INIT_STATIC_SPEC ("link", &link_spec
),
1199 INIT_STATIC_SPEC ("lib", &lib_spec
),
1200 INIT_STATIC_SPEC ("mfwrap", &mfwrap_spec
),
1201 INIT_STATIC_SPEC ("mflib", &mflib_spec
),
1202 INIT_STATIC_SPEC ("link_gomp", &link_gomp_spec
),
1203 INIT_STATIC_SPEC ("libgcc", &libgcc_spec
),
1204 INIT_STATIC_SPEC ("startfile", &startfile_spec
),
1205 INIT_STATIC_SPEC ("cross_compile", &cross_compile
),
1206 INIT_STATIC_SPEC ("version", &compiler_version
),
1207 INIT_STATIC_SPEC ("multilib", &multilib_select
),
1208 INIT_STATIC_SPEC ("multilib_defaults", &multilib_defaults
),
1209 INIT_STATIC_SPEC ("multilib_extra", &multilib_extra
),
1210 INIT_STATIC_SPEC ("multilib_matches", &multilib_matches
),
1211 INIT_STATIC_SPEC ("multilib_exclusions", &multilib_exclusions
),
1212 INIT_STATIC_SPEC ("multilib_options", &multilib_options
),
1213 INIT_STATIC_SPEC ("linker", &linker_name_spec
),
1214 INIT_STATIC_SPEC ("linker_plugin_file", &linker_plugin_file_spec
),
1215 INIT_STATIC_SPEC ("lto_wrapper", <o_wrapper_spec
),
1216 INIT_STATIC_SPEC ("lto_gcc", <o_gcc_spec
),
1217 INIT_STATIC_SPEC ("link_libgcc", &link_libgcc_spec
),
1218 INIT_STATIC_SPEC ("md_exec_prefix", &md_exec_prefix
),
1219 INIT_STATIC_SPEC ("md_startfile_prefix", &md_startfile_prefix
),
1220 INIT_STATIC_SPEC ("md_startfile_prefix_1", &md_startfile_prefix_1
),
1221 INIT_STATIC_SPEC ("startfile_prefix_spec", &startfile_prefix_spec
),
1222 INIT_STATIC_SPEC ("sysroot_spec", &sysroot_spec
),
1223 INIT_STATIC_SPEC ("sysroot_suffix_spec", &sysroot_suffix_spec
),
1224 INIT_STATIC_SPEC ("sysroot_hdrs_suffix_spec", &sysroot_hdrs_suffix_spec
),
1225 INIT_STATIC_SPEC ("self_spec", &self_spec
),
1228 #ifdef EXTRA_SPECS /* additional specs needed */
1229 /* Structure to keep track of just the first two args of a spec_list.
1230 That is all that the EXTRA_SPECS macro gives us. */
1233 const char *const name
;
1234 const char *const ptr
;
1237 static const struct spec_list_1 extra_specs_1
[] = { EXTRA_SPECS
};
1238 static struct spec_list
*extra_specs
= (struct spec_list
*) 0;
1241 /* List of dynamically allocates specs that have been defined so far. */
1243 static struct spec_list
*specs
= (struct spec_list
*) 0;
1245 /* List of static spec functions. */
1247 static const struct spec_function static_spec_functions
[] =
1249 { "getenv", getenv_spec_function
},
1250 { "if-exists", if_exists_spec_function
},
1251 { "if-exists-else", if_exists_else_spec_function
},
1252 { "replace-outfile", replace_outfile_spec_function
},
1253 { "remove-outfile", remove_outfile_spec_function
},
1254 { "version-compare", version_compare_spec_function
},
1255 { "include", include_spec_function
},
1256 { "find-file", find_file_spec_function
},
1257 { "find-plugindir", find_plugindir_spec_function
},
1258 { "print-asm-header", print_asm_header_spec_function
},
1259 { "compare-debug-dump-opt", compare_debug_dump_opt_spec_function
},
1260 { "compare-debug-self-opt", compare_debug_self_opt_spec_function
},
1261 { "compare-debug-auxbase-opt", compare_debug_auxbase_opt_spec_function
},
1262 { "pass-through-libs", pass_through_libs_spec_func
},
1263 #ifdef EXTRA_SPEC_FUNCTIONS
1264 EXTRA_SPEC_FUNCTIONS
1269 static int processing_spec_function
;
1271 /* Add appropriate libgcc specs to OBSTACK, taking into account
1272 various permutations of -shared-libgcc, -shared, and such. */
1274 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
1276 #ifndef USE_LD_AS_NEEDED
1277 #define USE_LD_AS_NEEDED 0
1281 init_gcc_specs (struct obstack
*obstack
, const char *shared_name
,
1282 const char *static_name
, const char *eh_name
)
1286 buf
= concat ("%{static|static-libgcc:", static_name
, " ", eh_name
, "}"
1287 "%{!static:%{!static-libgcc:"
1288 #if USE_LD_AS_NEEDED
1289 "%{!shared-libgcc:",
1290 static_name
, " --as-needed ", shared_name
, " --no-as-needed"
1293 shared_name
, "%{!shared: ", static_name
, "}"
1297 "%{!shared-libgcc:", static_name
, " ", eh_name
, "}"
1298 "%{shared-libgcc:", shared_name
, " ", static_name
, "}"
1302 "%{shared-libgcc:", shared_name
, "}"
1303 "%{!shared-libgcc:", static_name
, "}"
1306 "%{shared:", shared_name
, "}"
1311 obstack_grow (obstack
, buf
, strlen (buf
));
1314 #endif /* ENABLE_SHARED_LIBGCC */
1316 /* Initialize the specs lookup routines. */
1321 struct spec_list
*next
= (struct spec_list
*) 0;
1322 struct spec_list
*sl
= (struct spec_list
*) 0;
1326 return; /* Already initialized. */
1329 fnotice (stderr
, "Using built-in specs.\n");
1332 extra_specs
= XCNEWVEC (struct spec_list
, ARRAY_SIZE (extra_specs_1
));
1334 for (i
= ARRAY_SIZE (extra_specs_1
) - 1; i
>= 0; i
--)
1336 sl
= &extra_specs
[i
];
1337 sl
->name
= extra_specs_1
[i
].name
;
1338 sl
->ptr
= extra_specs_1
[i
].ptr
;
1340 sl
->name_len
= strlen (sl
->name
);
1341 sl
->ptr_spec
= &sl
->ptr
;
1346 for (i
= ARRAY_SIZE (static_specs
) - 1; i
>= 0; i
--)
1348 sl
= &static_specs
[i
];
1353 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
1354 /* ??? If neither -shared-libgcc nor --static-libgcc was
1355 seen, then we should be making an educated guess. Some proposed
1356 heuristics for ELF include:
1358 (1) If "-Wl,--export-dynamic", then it's a fair bet that the
1359 program will be doing dynamic loading, which will likely
1360 need the shared libgcc.
1362 (2) If "-ldl", then it's also a fair bet that we're doing
1365 (3) For each ET_DYN we're linking against (either through -lfoo
1366 or /some/path/foo.so), check to see whether it or one of
1367 its dependencies depends on a shared libgcc.
1371 If the runtime is fixed to look for program headers instead
1372 of calling __register_frame_info at all, for each object,
1373 use the shared libgcc if any EH symbol referenced.
1375 If crtstuff is fixed to not invoke __register_frame_info
1376 automatically, for each object, use the shared libgcc if
1377 any non-empty unwind section found.
1379 Doing any of this probably requires invoking an external program to
1380 do the actual object file scanning. */
1382 const char *p
= libgcc_spec
;
1385 /* Transform the extant libgcc_spec into one that uses the shared libgcc
1386 when given the proper command line arguments. */
1389 if (in_sep
&& *p
== '-' && strncmp (p
, "-lgcc", 5) == 0)
1391 init_gcc_specs (&obstack
,
1393 #ifdef USE_LIBUNWIND_EXCEPTIONS
1399 #ifdef USE_LIBUNWIND_EXCEPTIONS
1400 # ifdef HAVE_LD_STATIC_DYNAMIC
1401 " %{!static:" LD_STATIC_OPTION
"} -lunwind"
1402 " %{!static:" LD_DYNAMIC_OPTION
"}"
1412 else if (in_sep
&& *p
== 'l' && strncmp (p
, "libgcc.a%s", 10) == 0)
1414 /* Ug. We don't know shared library extensions. Hope that
1415 systems that use this form don't do shared libraries. */
1416 init_gcc_specs (&obstack
,
1420 #ifdef USE_LIBUNWIND_EXCEPTIONS
1429 obstack_1grow (&obstack
, *p
);
1430 in_sep
= (*p
== ' ');
1435 obstack_1grow (&obstack
, '\0');
1436 libgcc_spec
= XOBFINISH (&obstack
, const char *);
1439 #ifdef USE_AS_TRADITIONAL_FORMAT
1440 /* Prepend "--traditional-format" to whatever asm_spec we had before. */
1442 static const char tf
[] = "--traditional-format ";
1443 obstack_grow (&obstack
, tf
, sizeof(tf
) - 1);
1444 obstack_grow0 (&obstack
, asm_spec
, strlen (asm_spec
));
1445 asm_spec
= XOBFINISH (&obstack
, const char *);
1449 #if defined LINK_EH_SPEC || defined LINK_BUILDID_SPEC || \
1450 defined LINKER_HASH_STYLE
1451 # ifdef LINK_BUILDID_SPEC
1452 /* Prepend LINK_BUILDID_SPEC to whatever link_spec we had before. */
1453 obstack_grow (&obstack
, LINK_BUILDID_SPEC
, sizeof(LINK_BUILDID_SPEC
) - 1);
1455 # ifdef LINK_EH_SPEC
1456 /* Prepend LINK_EH_SPEC to whatever link_spec we had before. */
1457 obstack_grow (&obstack
, LINK_EH_SPEC
, sizeof(LINK_EH_SPEC
) - 1);
1459 # ifdef LINKER_HASH_STYLE
1460 /* Prepend --hash-style=LINKER_HASH_STYLE to whatever link_spec we had
1463 static const char hash_style
[] = "--hash-style=";
1464 obstack_grow (&obstack
, hash_style
, sizeof(hash_style
) - 1);
1465 obstack_grow (&obstack
, LINKER_HASH_STYLE
, sizeof(LINKER_HASH_STYLE
) - 1);
1466 obstack_1grow (&obstack
, ' ');
1469 obstack_grow0 (&obstack
, link_spec
, strlen (link_spec
));
1470 link_spec
= XOBFINISH (&obstack
, const char *);
1476 /* Change the value of spec NAME to SPEC. If SPEC is empty, then the spec is
1477 removed; If the spec starts with a + then SPEC is added to the end of the
1481 set_spec (const char *name
, const char *spec
)
1483 struct spec_list
*sl
;
1484 const char *old_spec
;
1485 int name_len
= strlen (name
);
1488 /* If this is the first call, initialize the statically allocated specs. */
1491 struct spec_list
*next
= (struct spec_list
*) 0;
1492 for (i
= ARRAY_SIZE (static_specs
) - 1; i
>= 0; i
--)
1494 sl
= &static_specs
[i
];
1501 /* See if the spec already exists. */
1502 for (sl
= specs
; sl
; sl
= sl
->next
)
1503 if (name_len
== sl
->name_len
&& !strcmp (sl
->name
, name
))
1508 /* Not found - make it. */
1509 sl
= XNEW (struct spec_list
);
1510 sl
->name
= xstrdup (name
);
1511 sl
->name_len
= name_len
;
1512 sl
->ptr_spec
= &sl
->ptr
;
1514 *(sl
->ptr_spec
) = "";
1519 old_spec
= *(sl
->ptr_spec
);
1520 *(sl
->ptr_spec
) = ((spec
[0] == '+' && ISSPACE ((unsigned char)spec
[1]))
1521 ? concat (old_spec
, spec
+ 1, NULL
)
1526 fnotice (stderr
, "Setting spec %s to '%s'\n\n", name
, *(sl
->ptr_spec
));
1529 /* Free the old spec. */
1530 if (old_spec
&& sl
->alloc_p
)
1531 free (CONST_CAST(char *, old_spec
));
1536 /* Accumulate a command (program name and args), and run it. */
1538 typedef const char *const_char_p
; /* For DEF_VEC_P. */
1539 DEF_VEC_P(const_char_p
);
1540 DEF_VEC_ALLOC_P(const_char_p
,heap
);
1542 /* Vector of pointers to arguments in the current line of specifications. */
1544 static VEC(const_char_p
,heap
) *argbuf
;
1546 /* Position in the argbuf vector containing the name of the output file
1547 (the value associated with the "-o" flag). */
1549 static int have_o_argbuf_index
= 0;
1551 /* Were the options -c, -S or -E passed. */
1552 static int have_c
= 0;
1554 /* Was the option -o passed. */
1555 static int have_o
= 0;
1557 /* This is the list of suffixes and codes (%g/%u/%U/%j) and the associated
1558 temp file. If the HOST_BIT_BUCKET is used for %j, no entry is made for
1561 static struct temp_name
{
1562 const char *suffix
; /* suffix associated with the code. */
1563 int length
; /* strlen (suffix). */
1564 int unique
; /* Indicates whether %g or %u/%U was used. */
1565 const char *filename
; /* associated filename. */
1566 int filename_length
; /* strlen (filename). */
1567 struct temp_name
*next
;
1570 /* Number of commands executed so far. */
1572 static int execution_count
;
1574 /* Number of commands that exited with a signal. */
1576 static int signal_count
;
1578 /* Allocate the argument vector. */
1583 argbuf
= VEC_alloc (const_char_p
, heap
, 10);
1586 /* Clear out the vector of arguments (after a command is executed). */
1591 VEC_truncate (const_char_p
, argbuf
, 0);
1594 /* Add one argument to the vector at the end.
1595 This is done when a space is seen or at the end of the line.
1596 If DELETE_ALWAYS is nonzero, the arg is a filename
1597 and the file should be deleted eventually.
1598 If DELETE_FAILURE is nonzero, the arg is a filename
1599 and the file should be deleted if this compilation fails. */
1602 store_arg (const char *arg
, int delete_always
, int delete_failure
)
1604 VEC_safe_push (const_char_p
, heap
, argbuf
, arg
);
1606 if (strcmp (arg
, "-o") == 0)
1607 have_o_argbuf_index
= VEC_length (const_char_p
, argbuf
);
1608 if (delete_always
|| delete_failure
)
1611 /* If the temporary file we should delete is specified as
1612 part of a joined argument extract the filename. */
1614 && (p
= strrchr (arg
, '=')))
1616 record_temp_file (arg
, delete_always
, delete_failure
);
1620 /* Load specs from a file name named FILENAME, replacing occurrences of
1621 various different types of line-endings, \r\n, \n\r and just \r, with
1625 load_specs (const char *filename
)
1629 struct stat statbuf
;
1636 fnotice (stderr
, "Reading specs from %s\n", filename
);
1638 /* Open and stat the file. */
1639 desc
= open (filename
, O_RDONLY
, 0);
1641 pfatal_with_name (filename
);
1642 if (stat (filename
, &statbuf
) < 0)
1643 pfatal_with_name (filename
);
1645 /* Read contents of file into BUFFER. */
1646 buffer
= XNEWVEC (char, statbuf
.st_size
+ 1);
1647 readlen
= read (desc
, buffer
, (unsigned) statbuf
.st_size
);
1649 pfatal_with_name (filename
);
1650 buffer
[readlen
] = 0;
1653 specs
= XNEWVEC (char, readlen
+ 1);
1655 for (buffer_p
= buffer
; buffer_p
&& *buffer_p
; buffer_p
++)
1661 if (buffer_p
> buffer
&& *(buffer_p
- 1) == '\n') /* \n\r */
1663 else if (*(buffer_p
+ 1) == '\n') /* \r\n */
1677 /* Read compilation specs from a file named FILENAME,
1678 replacing the default ones.
1680 A suffix which starts with `*' is a definition for
1681 one of the machine-specific sub-specs. The "suffix" should be
1682 *asm, *cc1, *cpp, *link, *startfile, etc.
1683 The corresponding spec is stored in asm_spec, etc.,
1684 rather than in the `compilers' vector.
1686 Anything invalid in the file is a fatal error. */
1689 read_specs (const char *filename
, int main_p
)
1694 buffer
= load_specs (filename
);
1696 /* Scan BUFFER for specs, putting them in the vector. */
1702 char *in
, *out
, *p1
, *p2
, *p3
;
1704 /* Advance P in BUFFER to the next nonblank nocomment line. */
1705 p
= skip_whitespace (p
);
1709 /* Is this a special command that starts with '%'? */
1710 /* Don't allow this for the main specs file, since it would
1711 encourage people to overwrite it. */
1712 if (*p
== '%' && !main_p
)
1715 while (*p
&& *p
!= '\n')
1721 if (!strncmp (p1
, "%include", sizeof ("%include") - 1)
1722 && (p1
[sizeof "%include" - 1] == ' '
1723 || p1
[sizeof "%include" - 1] == '\t'))
1727 p1
+= sizeof ("%include");
1728 while (*p1
== ' ' || *p1
== '\t')
1731 if (*p1
++ != '<' || p
[-2] != '>')
1732 fatal_error ("specs %%include syntax malformed after "
1734 (long) (p1
- buffer
+ 1));
1737 new_filename
= find_a_file (&startfile_prefixes
, p1
, R_OK
, true);
1738 read_specs (new_filename
? new_filename
: p1
, FALSE
);
1741 else if (!strncmp (p1
, "%include_noerr", sizeof "%include_noerr" - 1)
1742 && (p1
[sizeof "%include_noerr" - 1] == ' '
1743 || p1
[sizeof "%include_noerr" - 1] == '\t'))
1747 p1
+= sizeof "%include_noerr";
1748 while (*p1
== ' ' || *p1
== '\t')
1751 if (*p1
++ != '<' || p
[-2] != '>')
1752 fatal_error ("specs %%include syntax malformed after "
1754 (long) (p1
- buffer
+ 1));
1757 new_filename
= find_a_file (&startfile_prefixes
, p1
, R_OK
, true);
1759 read_specs (new_filename
, FALSE
);
1760 else if (verbose_flag
)
1761 fnotice (stderr
, "could not find specs file %s\n", p1
);
1764 else if (!strncmp (p1
, "%rename", sizeof "%rename" - 1)
1765 && (p1
[sizeof "%rename" - 1] == ' '
1766 || p1
[sizeof "%rename" - 1] == '\t'))
1769 struct spec_list
*sl
;
1770 struct spec_list
*newsl
;
1772 /* Get original name. */
1773 p1
+= sizeof "%rename";
1774 while (*p1
== ' ' || *p1
== '\t')
1777 if (! ISALPHA ((unsigned char) *p1
))
1778 fatal_error ("specs %%rename syntax malformed after "
1780 (long) (p1
- buffer
));
1783 while (*p2
&& !ISSPACE ((unsigned char) *p2
))
1786 if (*p2
!= ' ' && *p2
!= '\t')
1787 fatal_error ("specs %%rename syntax malformed after "
1789 (long) (p2
- buffer
));
1793 while (*p2
== ' ' || *p2
== '\t')
1796 if (! ISALPHA ((unsigned char) *p2
))
1797 fatal_error ("specs %%rename syntax malformed after "
1799 (long) (p2
- buffer
));
1801 /* Get new spec name. */
1803 while (*p3
&& !ISSPACE ((unsigned char) *p3
))
1807 fatal_error ("specs %%rename syntax malformed after "
1809 (long) (p3
- buffer
));
1812 for (sl
= specs
; sl
; sl
= sl
->next
)
1813 if (name_len
== sl
->name_len
&& !strcmp (sl
->name
, p1
))
1817 fatal_error ("specs %s spec was not found to be renamed", p1
);
1819 if (strcmp (p1
, p2
) == 0)
1822 for (newsl
= specs
; newsl
; newsl
= newsl
->next
)
1823 if (strcmp (newsl
->name
, p2
) == 0)
1824 fatal_error ("%s: attempt to rename spec %qs to "
1825 "already defined spec %qs",
1830 fnotice (stderr
, "rename spec %s to %s\n", p1
, p2
);
1832 fnotice (stderr
, "spec is '%s'\n\n", *(sl
->ptr_spec
));
1836 set_spec (p2
, *(sl
->ptr_spec
));
1838 free (CONST_CAST (char *, *(sl
->ptr_spec
)));
1840 *(sl
->ptr_spec
) = "";
1845 fatal_error ("specs unknown %% command after %ld characters",
1846 (long) (p1
- buffer
));
1849 /* Find the colon that should end the suffix. */
1851 while (*p1
&& *p1
!= ':' && *p1
!= '\n')
1854 /* The colon shouldn't be missing. */
1856 fatal_error ("specs file malformed after %ld characters",
1857 (long) (p1
- buffer
));
1859 /* Skip back over trailing whitespace. */
1861 while (p2
> buffer
&& (p2
[-1] == ' ' || p2
[-1] == '\t'))
1864 /* Copy the suffix to a string. */
1865 suffix
= save_string (p
, p2
- p
);
1866 /* Find the next line. */
1867 p
= skip_whitespace (p1
+ 1);
1869 fatal_error ("specs file malformed after %ld characters",
1870 (long) (p
- buffer
));
1873 /* Find next blank line or end of string. */
1874 while (*p1
&& !(*p1
== '\n' && (p1
[1] == '\n' || p1
[1] == '\0')))
1877 /* Specs end at the blank line and do not include the newline. */
1878 spec
= save_string (p
, p1
- p
);
1881 /* Delete backslash-newline sequences from the spec. */
1886 if (in
[0] == '\\' && in
[1] == '\n')
1888 else if (in
[0] == '#')
1889 while (*in
&& *in
!= '\n')
1897 if (suffix
[0] == '*')
1899 if (! strcmp (suffix
, "*link_command"))
1900 link_command_spec
= spec
;
1902 set_spec (suffix
+ 1, spec
);
1906 /* Add this pair to the vector. */
1908 = XRESIZEVEC (struct compiler
, compilers
, n_compilers
+ 2);
1910 compilers
[n_compilers
].suffix
= suffix
;
1911 compilers
[n_compilers
].spec
= spec
;
1913 memset (&compilers
[n_compilers
], 0, sizeof compilers
[n_compilers
]);
1917 link_command_spec
= spec
;
1920 if (link_command_spec
== 0)
1921 fatal_error ("spec file has no spec for linking");
1924 /* Record the names of temporary files we tell compilers to write,
1925 and delete them at the end of the run. */
1927 /* This is the common prefix we use to make temp file names.
1928 It is chosen once for each run of this program.
1929 It is substituted into a spec by %g or %j.
1930 Thus, all temp file names contain this prefix.
1931 In practice, all temp file names start with this prefix.
1933 This prefix comes from the envvar TMPDIR if it is defined;
1934 otherwise, from the P_tmpdir macro if that is defined;
1935 otherwise, in /usr/tmp or /tmp;
1936 or finally the current directory if all else fails. */
1938 static const char *temp_filename
;
1940 /* Length of the prefix. */
1942 static int temp_filename_length
;
1944 /* Define the list of temporary files to delete. */
1949 struct temp_file
*next
;
1952 /* Queue of files to delete on success or failure of compilation. */
1953 static struct temp_file
*always_delete_queue
;
1954 /* Queue of files to delete on failure of compilation. */
1955 static struct temp_file
*failure_delete_queue
;
1957 /* Record FILENAME as a file to be deleted automatically.
1958 ALWAYS_DELETE nonzero means delete it if all compilation succeeds;
1959 otherwise delete it in any case.
1960 FAIL_DELETE nonzero means delete it if a compilation step fails;
1961 otherwise delete it in any case. */
1964 record_temp_file (const char *filename
, int always_delete
, int fail_delete
)
1966 char *const name
= xstrdup (filename
);
1970 struct temp_file
*temp
;
1971 for (temp
= always_delete_queue
; temp
; temp
= temp
->next
)
1972 if (! filename_cmp (name
, temp
->name
))
1975 temp
= XNEW (struct temp_file
);
1976 temp
->next
= always_delete_queue
;
1978 always_delete_queue
= temp
;
1985 struct temp_file
*temp
;
1986 for (temp
= failure_delete_queue
; temp
; temp
= temp
->next
)
1987 if (! filename_cmp (name
, temp
->name
))
1990 temp
= XNEW (struct temp_file
);
1991 temp
->next
= failure_delete_queue
;
1993 failure_delete_queue
= temp
;
1999 /* Delete all the temporary files whose names we previously recorded. */
2001 #ifndef DELETE_IF_ORDINARY
2002 #define DELETE_IF_ORDINARY(NAME,ST,VERBOSE_FLAG) \
2005 if (stat (NAME, &ST) >= 0 && S_ISREG (ST.st_mode)) \
2006 if (unlink (NAME) < 0) \
2008 perror_with_name (NAME); \
2013 delete_if_ordinary (const char *name
)
2019 printf ("Delete %s? (y or n) ", name
);
2023 while ((c
= getchar ()) != '\n' && c
!= EOF
)
2026 if (i
== 'y' || i
== 'Y')
2028 DELETE_IF_ORDINARY (name
, st
, verbose_flag
);
2032 delete_temp_files (void)
2034 struct temp_file
*temp
;
2036 for (temp
= always_delete_queue
; temp
; temp
= temp
->next
)
2037 delete_if_ordinary (temp
->name
);
2038 always_delete_queue
= 0;
2041 /* Delete all the files to be deleted on error. */
2044 delete_failure_queue (void)
2046 struct temp_file
*temp
;
2048 for (temp
= failure_delete_queue
; temp
; temp
= temp
->next
)
2049 delete_if_ordinary (temp
->name
);
2053 clear_failure_queue (void)
2055 failure_delete_queue
= 0;
2058 /* Call CALLBACK for each path in PATHS, breaking out early if CALLBACK
2060 If DO_MULTI is true iterate over the paths twice, first with multilib
2061 suffix then without, otherwise iterate over the paths once without
2062 adding a multilib suffix. When DO_MULTI is true, some attempt is made
2063 to avoid visiting the same path twice, but we could do better. For
2064 instance, /usr/lib/../lib is considered different from /usr/lib.
2065 At least EXTRA_SPACE chars past the end of the path passed to
2066 CALLBACK are available for use by the callback.
2067 CALLBACK_INFO allows extra parameters to be passed to CALLBACK.
2069 Returns the value returned by CALLBACK. */
2072 for_each_path (const struct path_prefix
*paths
,
2075 void *(*callback
) (char *, void *),
2076 void *callback_info
)
2078 struct prefix_list
*pl
;
2079 const char *multi_dir
= NULL
;
2080 const char *multi_os_dir
= NULL
;
2081 const char *multi_suffix
;
2082 const char *just_multi_suffix
;
2085 bool skip_multi_dir
= false;
2086 bool skip_multi_os_dir
= false;
2088 multi_suffix
= machine_suffix
;
2089 just_multi_suffix
= just_machine_suffix
;
2090 if (do_multi
&& multilib_dir
&& strcmp (multilib_dir
, ".") != 0)
2092 multi_dir
= concat (multilib_dir
, dir_separator_str
, NULL
);
2093 multi_suffix
= concat (multi_suffix
, multi_dir
, NULL
);
2094 just_multi_suffix
= concat (just_multi_suffix
, multi_dir
, NULL
);
2096 if (do_multi
&& multilib_os_dir
&& strcmp (multilib_os_dir
, ".") != 0)
2097 multi_os_dir
= concat (multilib_os_dir
, dir_separator_str
, NULL
);
2101 size_t multi_dir_len
= 0;
2102 size_t multi_os_dir_len
= 0;
2104 size_t just_suffix_len
;
2108 multi_dir_len
= strlen (multi_dir
);
2110 multi_os_dir_len
= strlen (multi_os_dir
);
2111 suffix_len
= strlen (multi_suffix
);
2112 just_suffix_len
= strlen (just_multi_suffix
);
2116 len
= paths
->max_len
+ extra_space
+ 1;
2117 if (suffix_len
> multi_os_dir_len
)
2120 len
+= multi_os_dir_len
;
2121 path
= XNEWVEC (char, len
);
2124 for (pl
= paths
->plist
; pl
!= 0; pl
= pl
->next
)
2126 len
= strlen (pl
->prefix
);
2127 memcpy (path
, pl
->prefix
, len
);
2129 /* Look first in MACHINE/VERSION subdirectory. */
2130 if (!skip_multi_dir
)
2132 memcpy (path
+ len
, multi_suffix
, suffix_len
+ 1);
2133 ret
= callback (path
, callback_info
);
2138 /* Some paths are tried with just the machine (ie. target)
2139 subdir. This is used for finding as, ld, etc. */
2141 && pl
->require_machine_suffix
== 2)
2143 memcpy (path
+ len
, just_multi_suffix
, just_suffix_len
+ 1);
2144 ret
= callback (path
, callback_info
);
2149 /* Now try the base path. */
2150 if (!pl
->require_machine_suffix
2151 && !(pl
->os_multilib
? skip_multi_os_dir
: skip_multi_dir
))
2153 const char *this_multi
;
2154 size_t this_multi_len
;
2156 if (pl
->os_multilib
)
2158 this_multi
= multi_os_dir
;
2159 this_multi_len
= multi_os_dir_len
;
2163 this_multi
= multi_dir
;
2164 this_multi_len
= multi_dir_len
;
2168 memcpy (path
+ len
, this_multi
, this_multi_len
+ 1);
2172 ret
= callback (path
, callback_info
);
2180 if (multi_dir
== NULL
&& multi_os_dir
== NULL
)
2183 /* Run through the paths again, this time without multilibs.
2184 Don't repeat any we have already seen. */
2187 free (CONST_CAST (char *, multi_dir
));
2189 free (CONST_CAST (char *, multi_suffix
));
2190 multi_suffix
= machine_suffix
;
2191 free (CONST_CAST (char *, just_multi_suffix
));
2192 just_multi_suffix
= just_machine_suffix
;
2195 skip_multi_dir
= true;
2198 free (CONST_CAST (char *, multi_os_dir
));
2199 multi_os_dir
= NULL
;
2202 skip_multi_os_dir
= true;
2207 free (CONST_CAST (char *, multi_dir
));
2208 free (CONST_CAST (char *, multi_suffix
));
2209 free (CONST_CAST (char *, just_multi_suffix
));
2212 free (CONST_CAST (char *, multi_os_dir
));
2218 /* Callback for build_search_list. Adds path to obstack being built. */
2220 struct add_to_obstack_info
{
2227 add_to_obstack (char *path
, void *data
)
2229 struct add_to_obstack_info
*info
= (struct add_to_obstack_info
*) data
;
2231 if (info
->check_dir
&& !is_directory (path
, false))
2234 if (!info
->first_time
)
2235 obstack_1grow (info
->ob
, PATH_SEPARATOR
);
2237 obstack_grow (info
->ob
, path
, strlen (path
));
2239 info
->first_time
= false;
2243 /* Add or change the value of an environment variable, outputting the
2244 change to standard error if in verbose mode. */
2246 xputenv (const char *string
)
2249 fnotice (stderr
, "%s\n", string
);
2250 putenv (CONST_CAST (char *, string
));
2253 /* Build a list of search directories from PATHS.
2254 PREFIX is a string to prepend to the list.
2255 If CHECK_DIR_P is true we ensure the directory exists.
2256 If DO_MULTI is true, multilib paths are output first, then
2258 This is used mostly by putenv_from_prefixes so we use `collect_obstack'.
2259 It is also used by the --print-search-dirs flag. */
2262 build_search_list (const struct path_prefix
*paths
, const char *prefix
,
2263 bool check_dir
, bool do_multi
)
2265 struct add_to_obstack_info info
;
2267 info
.ob
= &collect_obstack
;
2268 info
.check_dir
= check_dir
;
2269 info
.first_time
= true;
2271 obstack_grow (&collect_obstack
, prefix
, strlen (prefix
));
2272 obstack_1grow (&collect_obstack
, '=');
2274 for_each_path (paths
, do_multi
, 0, add_to_obstack
, &info
);
2276 obstack_1grow (&collect_obstack
, '\0');
2277 return XOBFINISH (&collect_obstack
, char *);
2280 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
2284 putenv_from_prefixes (const struct path_prefix
*paths
, const char *env_var
,
2287 xputenv (build_search_list (paths
, env_var
, true, do_multi
));
2290 /* Check whether NAME can be accessed in MODE. This is like access,
2291 except that it never considers directories to be executable. */
2294 access_check (const char *name
, int mode
)
2300 if (stat (name
, &st
) < 0
2301 || S_ISDIR (st
.st_mode
))
2305 return access (name
, mode
);
2308 /* Callback for find_a_file. Appends the file name to the directory
2309 path. If the resulting file exists in the right mode, return the
2310 full pathname to the file. */
2312 struct file_at_path_info
{
2321 file_at_path (char *path
, void *data
)
2323 struct file_at_path_info
*info
= (struct file_at_path_info
*) data
;
2324 size_t len
= strlen (path
);
2326 memcpy (path
+ len
, info
->name
, info
->name_len
);
2327 len
+= info
->name_len
;
2329 /* Some systems have a suffix for executable files.
2330 So try appending that first. */
2331 if (info
->suffix_len
)
2333 memcpy (path
+ len
, info
->suffix
, info
->suffix_len
+ 1);
2334 if (access_check (path
, info
->mode
) == 0)
2339 if (access_check (path
, info
->mode
) == 0)
2345 /* Search for NAME using the prefix list PREFIXES. MODE is passed to
2346 access to check permissions. If DO_MULTI is true, search multilib
2347 paths then non-multilib paths, otherwise do not search multilib paths.
2348 Return 0 if not found, otherwise return its name, allocated with malloc. */
2351 find_a_file (const struct path_prefix
*pprefix
, const char *name
, int mode
,
2354 struct file_at_path_info info
;
2356 #ifdef DEFAULT_ASSEMBLER
2357 if (! strcmp (name
, "as") && access (DEFAULT_ASSEMBLER
, mode
) == 0)
2358 return xstrdup (DEFAULT_ASSEMBLER
);
2361 #ifdef DEFAULT_LINKER
2362 if (! strcmp(name
, "ld") && access (DEFAULT_LINKER
, mode
) == 0)
2363 return xstrdup (DEFAULT_LINKER
);
2366 /* Determine the filename to execute (special case for absolute paths). */
2368 if (IS_ABSOLUTE_PATH (name
))
2370 if (access (name
, mode
) == 0)
2371 return xstrdup (name
);
2377 info
.suffix
= (mode
& X_OK
) != 0 ? HOST_EXECUTABLE_SUFFIX
: "";
2378 info
.name_len
= strlen (info
.name
);
2379 info
.suffix_len
= strlen (info
.suffix
);
2382 return (char*) for_each_path (pprefix
, do_multi
,
2383 info
.name_len
+ info
.suffix_len
,
2384 file_at_path
, &info
);
2387 /* Ranking of prefixes in the sort list. -B prefixes are put before
2390 enum path_prefix_priority
2392 PREFIX_PRIORITY_B_OPT
,
2393 PREFIX_PRIORITY_LAST
2396 /* Add an entry for PREFIX in PLIST. The PLIST is kept in ascending
2397 order according to PRIORITY. Within each PRIORITY, new entries are
2400 If WARN is nonzero, we will warn if no file is found
2401 through this prefix. WARN should point to an int
2402 which will be set to 1 if this entry is used.
2404 COMPONENT is the value to be passed to update_path.
2406 REQUIRE_MACHINE_SUFFIX is 1 if this prefix can't be used without
2407 the complete value of machine_suffix.
2408 2 means try both machine_suffix and just_machine_suffix. */
2411 add_prefix (struct path_prefix
*pprefix
, const char *prefix
,
2412 const char *component
, /* enum prefix_priority */ int priority
,
2413 int require_machine_suffix
, int os_multilib
)
2415 struct prefix_list
*pl
, **prev
;
2418 for (prev
= &pprefix
->plist
;
2419 (*prev
) != NULL
&& (*prev
)->priority
<= priority
;
2420 prev
= &(*prev
)->next
)
2423 /* Keep track of the longest prefix. */
2425 prefix
= update_path (prefix
, component
);
2426 len
= strlen (prefix
);
2427 if (len
> pprefix
->max_len
)
2428 pprefix
->max_len
= len
;
2430 pl
= XNEW (struct prefix_list
);
2431 pl
->prefix
= prefix
;
2432 pl
->require_machine_suffix
= require_machine_suffix
;
2433 pl
->priority
= priority
;
2434 pl
->os_multilib
= os_multilib
;
2436 /* Insert after PREV. */
2441 /* Same as add_prefix, but prepending target_system_root to prefix. */
2442 /* The target_system_root prefix has been relocated by gcc_exec_prefix. */
2444 add_sysrooted_prefix (struct path_prefix
*pprefix
, const char *prefix
,
2445 const char *component
,
2446 /* enum prefix_priority */ int priority
,
2447 int require_machine_suffix
, int os_multilib
)
2449 if (!IS_ABSOLUTE_PATH (prefix
))
2450 fatal_error ("system path %qs is not absolute", prefix
);
2452 if (target_system_root
)
2454 char *sysroot_no_trailing_dir_separator
= xstrdup (target_system_root
);
2455 size_t sysroot_len
= strlen (target_system_root
);
2458 && target_system_root
[sysroot_len
- 1] == DIR_SEPARATOR
)
2459 sysroot_no_trailing_dir_separator
[sysroot_len
- 1] = '\0';
2461 if (target_sysroot_suffix
)
2462 prefix
= concat (target_sysroot_suffix
, prefix
, NULL
);
2463 prefix
= concat (sysroot_no_trailing_dir_separator
, prefix
, NULL
);
2464 free (sysroot_no_trailing_dir_separator
);
2466 /* We have to override this because GCC's notion of sysroot
2467 moves along with GCC. */
2471 add_prefix (pprefix
, prefix
, component
, priority
,
2472 require_machine_suffix
, os_multilib
);
2475 /* Execute the command specified by the arguments on the current line of spec.
2476 When using pipes, this includes several piped-together commands
2477 with `|' between them.
2479 Return 0 if successful, -1 if failed. */
2485 int n_commands
; /* # of command. */
2487 struct pex_obj
*pex
;
2490 const char *prog
; /* program name. */
2491 const char **argv
; /* vector of args. */
2495 struct command
*commands
; /* each command buffer with above info. */
2497 gcc_assert (!processing_spec_function
);
2501 string
= find_a_file (&exec_prefixes
,
2502 VEC_index (const_char_p
, argbuf
, 0), X_OK
, false);
2504 VEC_replace (const_char_p
, argbuf
, 0, string
);
2505 insert_wrapper (wrapper_string
);
2508 /* Count # of piped commands. */
2509 for (n_commands
= 1, i
= 0; VEC_iterate (const_char_p
, argbuf
, i
, arg
); i
++)
2510 if (strcmp (arg
, "|") == 0)
2513 /* Get storage for each command. */
2514 commands
= (struct command
*) alloca (n_commands
* sizeof (struct command
));
2516 /* Split argbuf into its separate piped processes,
2517 and record info about each one.
2518 Also search for the programs that are to be run. */
2520 VEC_safe_push (const_char_p
, heap
, argbuf
, 0);
2522 commands
[0].prog
= VEC_index (const_char_p
, argbuf
, 0); /* first command. */
2523 commands
[0].argv
= VEC_address (const_char_p
, argbuf
);
2525 if (!wrapper_string
)
2527 string
= find_a_file (&exec_prefixes
, commands
[0].prog
, X_OK
, false);
2528 commands
[0].argv
[0] = (string
) ? string
: commands
[0].argv
[0];
2531 for (n_commands
= 1, i
= 0; VEC_iterate (const_char_p
, argbuf
, i
, arg
); i
++)
2532 if (arg
&& strcmp (arg
, "|") == 0)
2533 { /* each command. */
2534 #if defined (__MSDOS__) || defined (OS2) || defined (VMS)
2535 fatal_error ("-pipe not supported");
2537 VEC_replace (const_char_p
, argbuf
, i
, 0); /* Termination of
2539 commands
[n_commands
].prog
= VEC_index (const_char_p
, argbuf
, i
+ 1);
2540 commands
[n_commands
].argv
2541 = &(VEC_address (const_char_p
, argbuf
))[i
+ 1];
2542 string
= find_a_file (&exec_prefixes
, commands
[n_commands
].prog
,
2545 commands
[n_commands
].argv
[0] = string
;
2549 /* If -v, print what we are about to do, and maybe query. */
2553 /* For help listings, put a blank line between sub-processes. */
2554 if (print_help_list
)
2555 fputc ('\n', stderr
);
2557 /* Print each piped command as a separate line. */
2558 for (i
= 0; i
< n_commands
; i
++)
2560 const char *const *j
;
2562 if (verbose_only_flag
)
2564 for (j
= commands
[i
].argv
; *j
; j
++)
2567 for (p
= *j
; *p
; ++p
)
2568 if (!ISALNUM ((unsigned char) *p
)
2569 && *p
!= '_' && *p
!= '/' && *p
!= '-' && *p
!= '.')
2573 fprintf (stderr
, " \"");
2574 for (p
= *j
; *p
; ++p
)
2576 if (*p
== '"' || *p
== '\\' || *p
== '$')
2577 fputc ('\\', stderr
);
2580 fputc ('"', stderr
);
2582 /* If it's empty, print "". */
2584 fprintf (stderr
, " \"\"");
2586 fprintf (stderr
, " %s", *j
);
2590 for (j
= commands
[i
].argv
; *j
; j
++)
2591 /* If it's empty, print "". */
2593 fprintf (stderr
, " \"\"");
2595 fprintf (stderr
, " %s", *j
);
2597 /* Print a pipe symbol after all but the last command. */
2598 if (i
+ 1 != n_commands
)
2599 fprintf (stderr
, " |");
2600 fprintf (stderr
, "\n");
2603 if (verbose_only_flag
!= 0)
2605 /* verbose_only_flag should act as if the spec was
2606 executed, so increment execution_count before
2607 returning. This prevents spurious warnings about
2608 unused linker input files, etc. */
2613 fnotice (stderr
, "\nGo ahead? (y or n) ");
2617 while (getchar () != '\n')
2620 if (i
!= 'y' && i
!= 'Y')
2625 #ifdef ENABLE_VALGRIND_CHECKING
2626 /* Run the each command through valgrind. To simplify prepending the
2627 path to valgrind and the option "-q" (for quiet operation unless
2628 something triggers), we allocate a separate argv array. */
2630 for (i
= 0; i
< n_commands
; i
++)
2636 for (argc
= 0; commands
[i
].argv
[argc
] != NULL
; argc
++)
2639 argv
= XALLOCAVEC (const char *, argc
+ 3);
2641 argv
[0] = VALGRIND_PATH
;
2643 for (j
= 2; j
< argc
+ 2; j
++)
2644 argv
[j
] = commands
[i
].argv
[j
- 2];
2647 commands
[i
].argv
= argv
;
2648 commands
[i
].prog
= argv
[0];
2652 /* Run each piped subprocess. */
2654 pex
= pex_init (PEX_USE_PIPES
| ((report_times
|| report_times_to_file
)
2655 ? PEX_RECORD_TIMES
: 0),
2656 progname
, temp_filename
);
2658 fatal_error ("pex_init failed: %m");
2660 for (i
= 0; i
< n_commands
; i
++)
2664 const char *string
= commands
[i
].argv
[0];
2666 errmsg
= pex_run (pex
,
2667 ((i
+ 1 == n_commands
? PEX_LAST
: 0)
2668 | (string
== commands
[i
].prog
? PEX_SEARCH
: 0)),
2669 string
, CONST_CAST (char **, commands
[i
].argv
),
2674 fatal_error (errmsg
);
2678 pfatal_with_name (errmsg
);
2682 if (string
!= commands
[i
].prog
)
2683 free (CONST_CAST (char *, string
));
2688 /* Wait for all the subprocesses to finish. */
2692 struct pex_time
*times
= NULL
;
2695 statuses
= (int *) alloca (n_commands
* sizeof (int));
2696 if (!pex_get_status (pex
, n_commands
, statuses
))
2697 fatal_error ("failed to get exit status: %m");
2699 if (report_times
|| report_times_to_file
)
2701 times
= (struct pex_time
*) alloca (n_commands
* sizeof (struct pex_time
));
2702 if (!pex_get_times (pex
, n_commands
, times
))
2703 fatal_error ("failed to get process times: %m");
2708 for (i
= 0; i
< n_commands
; ++i
)
2710 int status
= statuses
[i
];
2712 if (WIFSIGNALED (status
))
2715 /* SIGPIPE is a special case. It happens in -pipe mode
2716 when the compiler dies before the preprocessor is done,
2717 or the assembler dies before the compiler is done.
2718 There's generally been an error already, and this is
2719 just fallout. So don't generate another error unless
2720 we would otherwise have succeeded. */
2721 if (WTERMSIG (status
) == SIGPIPE
2722 && (signal_count
|| greatest_status
>= MIN_FATAL_STATUS
))
2729 internal_error ("%s (program %s)",
2730 strsignal (WTERMSIG (status
)), commands
[i
].prog
);
2732 else if (WIFEXITED (status
)
2733 && WEXITSTATUS (status
) >= MIN_FATAL_STATUS
)
2735 if (WEXITSTATUS (status
) > greatest_status
)
2736 greatest_status
= WEXITSTATUS (status
);
2740 if (report_times
|| report_times_to_file
)
2742 struct pex_time
*pt
= ×
[i
];
2745 ut
= ((double) pt
->user_seconds
2746 + (double) pt
->user_microseconds
/ 1.0e6
);
2747 st
= ((double) pt
->system_seconds
2748 + (double) pt
->system_microseconds
/ 1.0e6
);
2753 fnotice (stderr
, "# %s %.2f %.2f\n",
2754 commands
[i
].prog
, ut
, st
);
2756 if (report_times_to_file
)
2759 const char *const *j
;
2761 fprintf (report_times_to_file
, "%g %g", ut
, st
);
2763 for (j
= &commands
[i
].prog
; *j
; j
= &commands
[i
].argv
[++c
])
2766 for (p
= *j
; *p
; ++p
)
2767 if (*p
== '"' || *p
== '\\' || *p
== '$'
2773 fprintf (report_times_to_file
, " \"");
2774 for (p
= *j
; *p
; ++p
)
2776 if (*p
== '"' || *p
== '\\' || *p
== '$')
2777 fputc ('\\', report_times_to_file
);
2778 fputc (*p
, report_times_to_file
);
2780 fputc ('"', report_times_to_file
);
2783 fprintf (report_times_to_file
, " %s", *j
);
2786 fputc ('\n', report_times_to_file
);
2796 /* Find all the switches given to us
2797 and make a vector describing them.
2798 The elements of the vector are strings, one per switch given.
2799 If a switch uses following arguments, then the `part1' field
2800 is the switch itself and the `args' field
2801 is a null-terminated vector containing the following arguments.
2802 Bits in the `live_cond' field are:
2803 SWITCH_LIVE to indicate this switch is true in a conditional spec.
2804 SWITCH_FALSE to indicate this switch is overridden by a later switch.
2805 SWITCH_IGNORE to indicate this switch should be ignored (used in %<S).
2806 SWITCH_IGNORE_PERMANENTLY to indicate this switch should be ignored
2807 in all do_spec calls afterwards. Used for %<S from self specs.
2808 The `validated' field is nonzero if any spec has looked at this switch;
2809 if it remains zero at the end of the run, it must be meaningless. */
2811 #define SWITCH_LIVE (1 << 0)
2812 #define SWITCH_FALSE (1 << 1)
2813 #define SWITCH_IGNORE (1 << 2)
2814 #define SWITCH_IGNORE_PERMANENTLY (1 << 3)
2815 #define SWITCH_KEEP_FOR_GCC (1 << 4)
2821 unsigned int live_cond
;
2822 unsigned char validated
;
2823 unsigned char ordering
;
2826 static struct switchstr
*switches
;
2828 static int n_switches
;
2830 static int n_switches_alloc
;
2832 /* Set to zero if -fcompare-debug is disabled, positive if it's
2833 enabled and we're running the first compilation, negative if it's
2834 enabled and we're running the second compilation. For most of the
2835 time, it's in the range -1..1, but it can be temporarily set to 2
2836 or 3 to indicate that the -fcompare-debug flags didn't come from
2837 the command-line, but rather from the GCC_COMPARE_DEBUG environment
2838 variable, until a synthesized -fcompare-debug flag is added to the
2842 /* Set to nonzero if we've seen the -fcompare-debug-second flag. */
2843 int compare_debug_second
;
2845 /* Set to the flags that should be passed to the second compilation in
2846 a -fcompare-debug compilation. */
2847 const char *compare_debug_opt
;
2849 static struct switchstr
*switches_debug_check
[2];
2851 static int n_switches_debug_check
[2];
2853 static int n_switches_alloc_debug_check
[2];
2855 static char *debug_check_temp_file
[2];
2857 /* Language is one of three things:
2859 1) The name of a real programming language.
2860 2) NULL, indicating that no one has figured out
2862 3) '*', indicating that the file should be passed
2867 const char *language
;
2868 struct compiler
*incompiler
;
2873 /* Also a vector of input files specified. */
2875 static struct infile
*infiles
;
2879 static int n_infiles_alloc
;
2881 /* True if multiple input files are being compiled to a single
2884 static bool combine_inputs
;
2886 /* This counts the number of libraries added by lang_specific_driver, so that
2887 we can tell if there were any user supplied any files or libraries. */
2889 static int added_libraries
;
2891 /* And a vector of corresponding output files is made up later. */
2893 const char **outfiles
;
2895 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2897 /* Convert NAME to a new name if it is the standard suffix. DO_EXE
2898 is true if we should look for an executable suffix. DO_OBJ
2899 is true if we should look for an object suffix. */
2902 convert_filename (const char *name
, int do_exe ATTRIBUTE_UNUSED
,
2903 int do_obj ATTRIBUTE_UNUSED
)
2905 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2913 len
= strlen (name
);
2915 #ifdef HAVE_TARGET_OBJECT_SUFFIX
2916 /* Convert x.o to x.obj if TARGET_OBJECT_SUFFIX is ".obj". */
2917 if (do_obj
&& len
> 2
2918 && name
[len
- 2] == '.'
2919 && name
[len
- 1] == 'o')
2921 obstack_grow (&obstack
, name
, len
- 2);
2922 obstack_grow0 (&obstack
, TARGET_OBJECT_SUFFIX
, strlen (TARGET_OBJECT_SUFFIX
));
2923 name
= XOBFINISH (&obstack
, const char *);
2927 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2928 /* If there is no filetype, make it the executable suffix (which includes
2929 the "."). But don't get confused if we have just "-o". */
2930 if (! do_exe
|| TARGET_EXECUTABLE_SUFFIX
[0] == 0 || (len
== 2 && name
[0] == '-'))
2933 for (i
= len
- 1; i
>= 0; i
--)
2934 if (IS_DIR_SEPARATOR (name
[i
]))
2937 for (i
++; i
< len
; i
++)
2941 obstack_grow (&obstack
, name
, len
);
2942 obstack_grow0 (&obstack
, TARGET_EXECUTABLE_SUFFIX
,
2943 strlen (TARGET_EXECUTABLE_SUFFIX
));
2944 name
= XOBFINISH (&obstack
, const char *);
2951 /* Display the command line switches accepted by gcc. */
2955 printf (_("Usage: %s [options] file...\n"), progname
);
2956 fputs (_("Options:\n"), stdout
);
2958 fputs (_(" -pass-exit-codes Exit with highest error code from a phase\n"), stdout
);
2959 fputs (_(" --help Display this information\n"), stdout
);
2960 fputs (_(" --target-help Display target specific command line options\n"), stdout
);
2961 fputs (_(" --help={target|optimizers|warnings|params|[^]{joined|separate|undocumented}}[,...]\n"), stdout
);
2962 fputs (_(" Display specific types of command line options\n"), stdout
);
2964 fputs (_(" (Use '-v --help' to display command line options of sub-processes)\n"), stdout
);
2965 fputs (_(" --version Display compiler version information\n"), stdout
);
2966 fputs (_(" -dumpspecs Display all of the built in spec strings\n"), stdout
);
2967 fputs (_(" -dumpversion Display the version of the compiler\n"), stdout
);
2968 fputs (_(" -dumpmachine Display the compiler's target processor\n"), stdout
);
2969 fputs (_(" -print-search-dirs Display the directories in the compiler's search path\n"), stdout
);
2970 fputs (_(" -print-libgcc-file-name Display the name of the compiler's companion library\n"), stdout
);
2971 fputs (_(" -print-file-name=<lib> Display the full path to library <lib>\n"), stdout
);
2972 fputs (_(" -print-prog-name=<prog> Display the full path to compiler component <prog>\n"), stdout
);
2973 fputs (_(" -print-multi-directory Display the root directory for versions of libgcc\n"), stdout
);
2975 -print-multi-lib Display the mapping between command line options and\n\
2976 multiple library search directories\n"), stdout
);
2977 fputs (_(" -print-multi-os-directory Display the relative path to OS libraries\n"), stdout
);
2978 fputs (_(" -print-sysroot Display the target libraries directory\n"), stdout
);
2979 fputs (_(" -print-sysroot-headers-suffix Display the sysroot suffix used to find headers\n"), stdout
);
2980 fputs (_(" -Wa,<options> Pass comma-separated <options> on to the assembler\n"), stdout
);
2981 fputs (_(" -Wp,<options> Pass comma-separated <options> on to the preprocessor\n"), stdout
);
2982 fputs (_(" -Wl,<options> Pass comma-separated <options> on to the linker\n"), stdout
);
2983 fputs (_(" -Xassembler <arg> Pass <arg> on to the assembler\n"), stdout
);
2984 fputs (_(" -Xpreprocessor <arg> Pass <arg> on to the preprocessor\n"), stdout
);
2985 fputs (_(" -Xlinker <arg> Pass <arg> on to the linker\n"), stdout
);
2986 fputs (_(" -save-temps Do not delete intermediate files\n"), stdout
);
2987 fputs (_(" -save-temps=<arg> Do not delete intermediate files\n"), stdout
);
2989 -no-canonical-prefixes Do not canonicalize paths when building relative\n\
2990 prefixes to other gcc components\n"), stdout
);
2991 fputs (_(" -pipe Use pipes rather than intermediate files\n"), stdout
);
2992 fputs (_(" -time Time the execution of each subprocess\n"), stdout
);
2993 fputs (_(" -specs=<file> Override built-in specs with the contents of <file>\n"), stdout
);
2994 fputs (_(" -std=<standard> Assume that the input sources are for <standard>\n"), stdout
);
2996 --sysroot=<directory> Use <directory> as the root directory for headers\n\
2997 and libraries\n"), stdout
);
2998 fputs (_(" -B <directory> Add <directory> to the compiler's search paths\n"), stdout
);
2999 fputs (_(" -v Display the programs invoked by the compiler\n"), stdout
);
3000 fputs (_(" -### Like -v but options quoted and commands not executed\n"), stdout
);
3001 fputs (_(" -E Preprocess only; do not compile, assemble or link\n"), stdout
);
3002 fputs (_(" -S Compile only; do not assemble or link\n"), stdout
);
3003 fputs (_(" -c Compile and assemble, but do not link\n"), stdout
);
3004 fputs (_(" -o <file> Place the output into <file>\n"), stdout
);
3005 fputs (_(" -pie Create a position independent executable\n"), stdout
);
3006 fputs (_(" -shared Create a shared library\n"), stdout
);
3008 -x <language> Specify the language of the following input files\n\
3009 Permissible languages include: c c++ assembler none\n\
3010 'none' means revert to the default behavior of\n\
3011 guessing the language based on the file's extension\n\
3015 \nOptions starting with -g, -f, -m, -O, -W, or --param are automatically\n\
3016 passed on to the various sub-processes invoked by %s. In order to pass\n\
3017 other options on to these processes the -W<letter> options must be used.\n\
3020 /* The rest of the options are displayed by invocations of the various
3025 add_preprocessor_option (const char *option
, int len
)
3027 VEC_safe_push (char_p
, heap
, preprocessor_options
,
3028 save_string (option
, len
));
3032 add_assembler_option (const char *option
, int len
)
3034 VEC_safe_push (char_p
, heap
, assembler_options
, save_string (option
, len
));
3038 add_linker_option (const char *option
, int len
)
3040 VEC_safe_push (char_p
, heap
, linker_options
, save_string (option
, len
));
3043 /* Allocate space for an input file in infiles. */
3048 if (n_infiles_alloc
== 0)
3050 n_infiles_alloc
= 16;
3051 infiles
= XNEWVEC (struct infile
, n_infiles_alloc
);
3053 else if (n_infiles_alloc
== n_infiles
)
3055 n_infiles_alloc
*= 2;
3056 infiles
= XRESIZEVEC (struct infile
, infiles
, n_infiles_alloc
);
3060 /* Store an input file with the given NAME and LANGUAGE in
3064 add_infile (const char *name
, const char *language
)
3067 infiles
[n_infiles
].name
= name
;
3068 infiles
[n_infiles
++].language
= language
;
3071 /* Allocate space for a switch in switches. */
3076 if (n_switches_alloc
== 0)
3078 n_switches_alloc
= 16;
3079 switches
= XNEWVEC (struct switchstr
, n_switches_alloc
);
3081 else if (n_switches_alloc
== n_switches
)
3083 n_switches_alloc
*= 2;
3084 switches
= XRESIZEVEC (struct switchstr
, switches
, n_switches_alloc
);
3088 /* Save an option OPT with N_ARGS arguments in array ARGS, marking it
3089 as validated if VALIDATED. */
3092 save_switch (const char *opt
, size_t n_args
, const char *const *args
,
3096 switches
[n_switches
].part1
= opt
+ 1;
3098 switches
[n_switches
].args
= 0;
3101 switches
[n_switches
].args
= XNEWVEC (const char *, n_args
+ 1);
3102 memcpy (switches
[n_switches
].args
, args
, n_args
* sizeof (const char *));
3103 switches
[n_switches
].args
[n_args
] = NULL
;
3106 switches
[n_switches
].live_cond
= 0;
3107 switches
[n_switches
].validated
= validated
;
3108 switches
[n_switches
].ordering
= 0;
3112 /* Handle an option DECODED that is unknown to the option-processing
3116 driver_unknown_option_callback (const struct cl_decoded_option
*decoded
)
3118 const char *opt
= decoded
->arg
;
3119 if (opt
[1] == 'W' && opt
[2] == 'n' && opt
[3] == 'o' && opt
[4] == '-'
3120 && !(decoded
->errors
& CL_ERR_NEGATIVE
))
3122 /* Leave unknown -Wno-* options for the compiler proper, to be
3123 diagnosed only if there are warnings. */
3124 save_switch (decoded
->canonical_option
[0],
3125 decoded
->canonical_option_num_elements
- 1,
3126 &decoded
->canonical_option
[1], false);
3133 /* Handle an option DECODED that is not marked as CL_DRIVER.
3134 LANG_MASK will always be CL_DRIVER. */
3137 driver_wrong_lang_callback (const struct cl_decoded_option
*decoded
,
3138 unsigned int lang_mask ATTRIBUTE_UNUSED
)
3140 /* At this point, non-driver options are accepted (and expected to
3141 be passed down by specs) unless marked to be rejected by the
3142 driver. Options to be rejected by the driver but accepted by the
3143 compilers proper are treated just like completely unknown
3145 const struct cl_option
*option
= &cl_options
[decoded
->opt_index
];
3147 if (option
->cl_reject_driver
)
3148 error ("unrecognized command line option %qs",
3149 decoded
->orig_option_with_args_text
);
3151 save_switch (decoded
->canonical_option
[0],
3152 decoded
->canonical_option_num_elements
- 1,
3153 &decoded
->canonical_option
[1], false);
3156 static const char *spec_lang
= 0;
3157 static int last_language_n_infiles
;
3159 /* Handle a driver option; arguments and return value as for
3163 driver_handle_option (struct gcc_options
*opts
,
3164 struct gcc_options
*opts_set
,
3165 const struct cl_decoded_option
*decoded
,
3166 unsigned int lang_mask ATTRIBUTE_UNUSED
, int kind
,
3168 const struct cl_option_handlers
*handlers ATTRIBUTE_UNUSED
,
3169 diagnostic_context
*dc
)
3171 size_t opt_index
= decoded
->opt_index
;
3172 const char *arg
= decoded
->arg
;
3173 const char *compare_debug_replacement_opt
;
3174 int value
= decoded
->value
;
3175 bool validated
= false;
3176 bool do_save
= true;
3178 gcc_assert (opts
== &global_options
);
3179 gcc_assert (opts_set
== &global_options_set
);
3180 gcc_assert (kind
== DK_UNSPECIFIED
);
3181 gcc_assert (loc
== UNKNOWN_LOCATION
);
3182 gcc_assert (dc
== global_dc
);
3188 struct spec_list
*sl
;
3190 for (sl
= specs
; sl
; sl
= sl
->next
)
3191 printf ("*%s:\n%s\n\n", sl
->name
, *(sl
->ptr_spec
));
3192 if (link_command_spec
)
3193 printf ("*link_command:\n%s\n\n", link_command_spec
);
3197 case OPT_dumpversion
:
3198 printf ("%s\n", spec_version
);
3201 case OPT_dumpmachine
:
3202 printf ("%s\n", spec_machine
);
3208 /* CPP driver cannot obtain switch from cc1_options. */
3210 add_preprocessor_option ("--version", strlen ("--version"));
3211 add_assembler_option ("--version", strlen ("--version"));
3212 add_linker_option ("--version", strlen ("--version"));
3216 print_help_list
= 1;
3218 /* CPP driver cannot obtain switch from cc1_options. */
3220 add_preprocessor_option ("--help", 6);
3221 add_assembler_option ("--help", 6);
3222 add_linker_option ("--help", 6);
3226 print_subprocess_help
= 2;
3229 case OPT__target_help
:
3230 print_subprocess_help
= 1;
3232 /* CPP driver cannot obtain switch from cc1_options. */
3234 add_preprocessor_option ("--target-help", 13);
3235 add_assembler_option ("--target-help", 13);
3236 add_linker_option ("--target-help", 13);
3239 case OPT_pass_exit_codes
:
3240 case OPT_print_search_dirs
:
3241 case OPT_print_file_name_
:
3242 case OPT_print_prog_name_
:
3243 case OPT_print_multi_lib
:
3244 case OPT_print_multi_directory
:
3245 case OPT_print_sysroot
:
3246 case OPT_print_multi_os_directory
:
3247 case OPT_print_sysroot_headers_suffix
:
3250 /* These options set the variables specified in common.opt
3251 automatically, and do not need to be saved for spec
3256 case OPT_print_libgcc_file_name
:
3257 print_file_name
= "libgcc.a";
3261 case OPT_fcompare_debug_second
:
3262 compare_debug_second
= 1;
3265 case OPT_fcompare_debug
:
3269 compare_debug_replacement_opt
= "-fcompare-debug=";
3271 goto compare_debug_with_arg
;
3274 compare_debug_replacement_opt
= "-fcompare-debug=-gtoggle";
3276 goto compare_debug_with_arg
;
3283 case OPT_fcompare_debug_
:
3284 compare_debug_replacement_opt
= decoded
->canonical_option
[0];
3285 compare_debug_with_arg
:
3286 gcc_assert (decoded
->canonical_option_num_elements
== 1);
3287 gcc_assert (arg
!= NULL
);
3292 if (compare_debug
< 0)
3293 compare_debug_opt
= NULL
;
3295 compare_debug_opt
= arg
;
3296 save_switch (compare_debug_replacement_opt
, 0, NULL
, validated
);
3302 /* Pass the rest of this option to the assembler. */
3304 /* Split the argument at commas. */
3306 for (j
= 0; arg
[j
]; j
++)
3309 add_assembler_option (arg
+ prev
, j
- prev
);
3313 /* Record the part after the last comma. */
3314 add_assembler_option (arg
+ prev
, j
- prev
);
3322 /* Pass the rest of this option to the preprocessor. */
3324 /* Split the argument at commas. */
3326 for (j
= 0; arg
[j
]; j
++)
3329 add_preprocessor_option (arg
+ prev
, j
- prev
);
3333 /* Record the part after the last comma. */
3334 add_preprocessor_option (arg
+ prev
, j
- prev
);
3342 /* Split the argument at commas. */
3344 for (j
= 0; arg
[j
]; j
++)
3347 add_infile (save_string (arg
+ prev
, j
- prev
), "*");
3350 /* Record the part after the last comma. */
3351 add_infile (arg
+ prev
, "*");
3357 add_infile (arg
, "*");
3361 case OPT_Xpreprocessor
:
3362 add_preprocessor_option (arg
, strlen (arg
));
3366 case OPT_Xassembler
:
3367 add_assembler_option (arg
, strlen (arg
));
3372 /* POSIX allows separation of -l and the lib arg; canonicalize
3373 by concatenating -l with its arg */
3374 add_infile (concat ("-l", arg
, NULL
), "*");
3379 /* Similarly, canonicalize -L for linkers that may not accept
3380 separate arguments. */
3381 save_switch (concat ("-L", arg
, NULL
), 0, NULL
, validated
);
3386 save_switch (concat ("-F", arg
, NULL
), 0, NULL
, validated
);
3389 case OPT_save_temps
:
3390 save_temps_flag
= SAVE_TEMPS_CWD
;
3394 case OPT_save_temps_
:
3395 if (strcmp (arg
, "cwd") == 0)
3396 save_temps_flag
= SAVE_TEMPS_CWD
;
3397 else if (strcmp (arg
, "obj") == 0
3398 || strcmp (arg
, "object") == 0)
3399 save_temps_flag
= SAVE_TEMPS_OBJ
;
3401 fatal_error ("%qs is an unknown -save-temps option",
3402 decoded
->orig_option_with_args_text
);
3405 case OPT_no_canonical_prefixes
:
3406 /* Already handled as a special case, so ignored here. */
3412 /* These options set the variables specified in common.opt
3413 automatically, but do need to be saved for spec
3419 struct user_specs
*user
= XNEW (struct user_specs
);
3421 user
->next
= (struct user_specs
*) 0;
3422 user
->filename
= arg
;
3423 if (user_specs_tail
)
3424 user_specs_tail
->next
= user
;
3426 user_specs_head
= user
;
3427 user_specs_tail
= user
;
3433 target_system_root
= arg
;
3434 target_system_root_changed
= 1;
3439 if (report_times_to_file
)
3440 fclose (report_times_to_file
);
3441 report_times_to_file
= fopen (arg
, "a");
3447 This is similar to -v except that there is no execution
3448 of the commands and the echoed arguments are quoted. It
3449 is intended for use in shell scripts to capture the
3450 driver-generated command line. */
3451 verbose_only_flag
++;
3458 size_t len
= strlen (arg
);
3460 /* Catch the case where the user has forgotten to append a
3461 directory separator to the path. Note, they may be using
3462 -B to add an executable name prefix, eg "i386-elf-", in
3463 order to distinguish between multiple installations of
3464 GCC in the same directory. Hence we must check to see
3465 if appending a directory separator actually makes a
3466 valid directory name. */
3467 if (!IS_DIR_SEPARATOR (arg
[len
- 1])
3468 && is_directory (arg
, false))
3470 char *tmp
= XNEWVEC (char, len
+ 2);
3472 tmp
[len
] = DIR_SEPARATOR
;
3477 add_prefix (&exec_prefixes
, arg
, NULL
,
3478 PREFIX_PRIORITY_B_OPT
, 0, 0);
3479 add_prefix (&startfile_prefixes
, arg
, NULL
,
3480 PREFIX_PRIORITY_B_OPT
, 0, 0);
3481 add_prefix (&include_prefixes
, arg
, NULL
,
3482 PREFIX_PRIORITY_B_OPT
, 0, 0);
3489 if (!strcmp (spec_lang
, "none"))
3490 /* Suppress the warning if -xnone comes after the last input
3491 file, because alternate command interfaces like g++ might
3492 find it useful to place -xnone after each input file. */
3495 last_language_n_infiles
= n_infiles
;
3501 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX) || defined(HAVE_TARGET_OBJECT_SUFFIX)
3502 arg
= convert_filename (arg
, ! have_c
, 0);
3504 /* Save the output name in case -save-temps=obj was used. */
3505 save_temps_prefix
= xstrdup (arg
);
3506 /* On some systems, ld cannot handle "-o" without a space. So
3507 split the option from its argument. */
3508 save_switch ("-o", 1, &arg
, validated
);
3511 case OPT_static_libgcc
:
3512 case OPT_shared_libgcc
:
3513 case OPT_static_libgfortran
:
3514 case OPT_static_libstdc__
:
3515 /* These are always valid, since gcc.c itself understands the
3516 first two, gfortranspec.c understands -static-libgfortran and
3517 g++spec.c understands -static-libstdc++ */
3522 /* Various driver options need no special processing at this
3523 point, having been handled in a prescan above or being
3524 handled by specs. */
3529 save_switch (decoded
->canonical_option
[0],
3530 decoded
->canonical_option_num_elements
- 1,
3531 &decoded
->canonical_option
[1], validated
);
3535 /* Put the driver's standard set of option handlers in *HANDLERS. */
3538 set_option_handlers (struct cl_option_handlers
*handlers
)
3540 handlers
->unknown_option_callback
= driver_unknown_option_callback
;
3541 handlers
->wrong_lang_callback
= driver_wrong_lang_callback
;
3542 handlers
->num_handlers
= 3;
3543 handlers
->handlers
[0].handler
= driver_handle_option
;
3544 handlers
->handlers
[0].mask
= CL_DRIVER
;
3545 handlers
->handlers
[1].handler
= common_handle_option
;
3546 handlers
->handlers
[1].mask
= CL_COMMON
;
3547 handlers
->handlers
[2].handler
= target_handle_option
;
3548 handlers
->handlers
[2].mask
= CL_TARGET
;
3551 /* Create the vector `switches' and its contents.
3552 Store its length in `n_switches'. */
3555 process_command (unsigned int decoded_options_count
,
3556 struct cl_decoded_option
*decoded_options
)
3560 const char *tooldir_prefix
;
3561 char *(*get_relative_prefix
) (const char *, const char *,
3562 const char *) = NULL
;
3563 struct cl_option_handlers handlers
;
3566 gcc_exec_prefix
= getenv ("GCC_EXEC_PREFIX");
3570 added_libraries
= 0;
3572 /* Figure compiler version from version string. */
3574 compiler_version
= temp1
= xstrdup (version_string
);
3576 for (; *temp1
; ++temp1
)
3585 /* Handle any -no-canonical-prefixes flag early, to assign the function
3586 that builds relative prefixes. This function creates default search
3587 paths that are needed later in normal option handling. */
3589 for (j
= 1; j
< decoded_options_count
; j
++)
3591 if (decoded_options
[j
].opt_index
== OPT_no_canonical_prefixes
)
3593 get_relative_prefix
= make_relative_prefix_ignore_links
;
3597 if (! get_relative_prefix
)
3598 get_relative_prefix
= make_relative_prefix
;
3600 /* Set up the default search paths. If there is no GCC_EXEC_PREFIX,
3601 see if we can create it from the pathname specified in
3602 decoded_options[0].arg. */
3604 gcc_libexec_prefix
= standard_libexec_prefix
;
3606 /* FIXME: make_relative_prefix doesn't yet work for VMS. */
3607 if (!gcc_exec_prefix
)
3609 gcc_exec_prefix
= get_relative_prefix (decoded_options
[0].arg
,
3610 standard_bindir_prefix
,
3611 standard_exec_prefix
);
3612 gcc_libexec_prefix
= get_relative_prefix (decoded_options
[0].arg
,
3613 standard_bindir_prefix
,
3614 standard_libexec_prefix
);
3615 if (gcc_exec_prefix
)
3616 xputenv (concat ("GCC_EXEC_PREFIX=", gcc_exec_prefix
, NULL
));
3620 /* make_relative_prefix requires a program name, but
3621 GCC_EXEC_PREFIX is typically a directory name with a trailing
3622 / (which is ignored by make_relative_prefix), so append a
3624 char *tmp_prefix
= concat (gcc_exec_prefix
, "gcc", NULL
);
3625 gcc_libexec_prefix
= get_relative_prefix (tmp_prefix
,
3626 standard_exec_prefix
,
3627 standard_libexec_prefix
);
3629 /* The path is unrelocated, so fallback to the original setting. */
3630 if (!gcc_libexec_prefix
)
3631 gcc_libexec_prefix
= standard_libexec_prefix
;
3637 /* From this point onward, gcc_exec_prefix is non-null if the toolchain
3638 is relocated. The toolchain was either relocated using GCC_EXEC_PREFIX
3639 or an automatically created GCC_EXEC_PREFIX from
3640 decoded_options[0].arg. */
3642 /* Do language-specific adjustment/addition of flags. */
3643 lang_specific_driver (&decoded_options
, &decoded_options_count
,
3646 if (gcc_exec_prefix
)
3648 int len
= strlen (gcc_exec_prefix
);
3650 if (len
> (int) sizeof ("/lib/gcc/") - 1
3651 && (IS_DIR_SEPARATOR (gcc_exec_prefix
[len
-1])))
3653 temp
= gcc_exec_prefix
+ len
- sizeof ("/lib/gcc/") + 1;
3654 if (IS_DIR_SEPARATOR (*temp
)
3655 && filename_ncmp (temp
+ 1, "lib", 3) == 0
3656 && IS_DIR_SEPARATOR (temp
[4])
3657 && filename_ncmp (temp
+ 5, "gcc", 3) == 0)
3658 len
-= sizeof ("/lib/gcc/") - 1;
3661 set_std_prefix (gcc_exec_prefix
, len
);
3662 add_prefix (&exec_prefixes
, gcc_libexec_prefix
, "GCC",
3663 PREFIX_PRIORITY_LAST
, 0, 0);
3664 add_prefix (&startfile_prefixes
, gcc_exec_prefix
, "GCC",
3665 PREFIX_PRIORITY_LAST
, 0, 0);
3668 /* COMPILER_PATH and LIBRARY_PATH have values
3669 that are lists of directory names with colons. */
3671 temp
= getenv ("COMPILER_PATH");
3674 const char *startp
, *endp
;
3675 char *nstore
= (char *) alloca (strlen (temp
) + 3);
3677 startp
= endp
= temp
;
3680 if (*endp
== PATH_SEPARATOR
|| *endp
== 0)
3682 strncpy (nstore
, startp
, endp
- startp
);
3684 strcpy (nstore
, concat (".", dir_separator_str
, NULL
));
3685 else if (!IS_DIR_SEPARATOR (endp
[-1]))
3687 nstore
[endp
- startp
] = DIR_SEPARATOR
;
3688 nstore
[endp
- startp
+ 1] = 0;
3691 nstore
[endp
- startp
] = 0;
3692 add_prefix (&exec_prefixes
, nstore
, 0,
3693 PREFIX_PRIORITY_LAST
, 0, 0);
3694 add_prefix (&include_prefixes
, nstore
, 0,
3695 PREFIX_PRIORITY_LAST
, 0, 0);
3698 endp
= startp
= endp
+ 1;
3705 temp
= getenv (LIBRARY_PATH_ENV
);
3706 if (temp
&& *cross_compile
== '0')
3708 const char *startp
, *endp
;
3709 char *nstore
= (char *) alloca (strlen (temp
) + 3);
3711 startp
= endp
= temp
;
3714 if (*endp
== PATH_SEPARATOR
|| *endp
== 0)
3716 strncpy (nstore
, startp
, endp
- startp
);
3718 strcpy (nstore
, concat (".", dir_separator_str
, NULL
));
3719 else if (!IS_DIR_SEPARATOR (endp
[-1]))
3721 nstore
[endp
- startp
] = DIR_SEPARATOR
;
3722 nstore
[endp
- startp
+ 1] = 0;
3725 nstore
[endp
- startp
] = 0;
3726 add_prefix (&startfile_prefixes
, nstore
, NULL
,
3727 PREFIX_PRIORITY_LAST
, 0, 1);
3730 endp
= startp
= endp
+ 1;
3737 /* Use LPATH like LIBRARY_PATH (for the CMU build program). */
3738 temp
= getenv ("LPATH");
3739 if (temp
&& *cross_compile
== '0')
3741 const char *startp
, *endp
;
3742 char *nstore
= (char *) alloca (strlen (temp
) + 3);
3744 startp
= endp
= temp
;
3747 if (*endp
== PATH_SEPARATOR
|| *endp
== 0)
3749 strncpy (nstore
, startp
, endp
- startp
);
3751 strcpy (nstore
, concat (".", dir_separator_str
, NULL
));
3752 else if (!IS_DIR_SEPARATOR (endp
[-1]))
3754 nstore
[endp
- startp
] = DIR_SEPARATOR
;
3755 nstore
[endp
- startp
+ 1] = 0;
3758 nstore
[endp
- startp
] = 0;
3759 add_prefix (&startfile_prefixes
, nstore
, NULL
,
3760 PREFIX_PRIORITY_LAST
, 0, 1);
3763 endp
= startp
= endp
+ 1;
3770 /* Process the options and store input files and switches in their
3773 last_language_n_infiles
= -1;
3775 set_option_handlers (&handlers
);
3777 for (j
= 1; j
< decoded_options_count
; j
++)
3779 switch (decoded_options
[j
].opt_index
)
3791 for (j
= 1; j
< decoded_options_count
; j
++)
3793 if (decoded_options
[j
].opt_index
== OPT_SPECIAL_input_file
)
3795 const char *arg
= decoded_options
[j
].arg
;
3796 const char *p
= strrchr (arg
, '@');
3800 #ifdef HAVE_TARGET_OBJECT_SUFFIX
3801 arg
= convert_filename (arg
, 0, access (arg
, F_OK
));
3803 /* For LTO static archive support we handle input file
3804 specifications that are composed of a filename and
3805 an offset like FNAME@OFFSET. */
3808 && sscanf (p
, "@%li%n", &offset
, &consumed
) >= 1
3809 && strlen (p
) == (unsigned int)consumed
)
3811 fname
= (char *)xmalloc (p
- arg
+ 1);
3812 memcpy (fname
, arg
, p
- arg
);
3813 fname
[p
- arg
] = '\0';
3814 /* Only accept non-stdin and existing FNAME parts, otherwise
3815 try with the full name. */
3816 if (strcmp (fname
, "-") == 0 || access (fname
, F_OK
) < 0)
3819 fname
= xstrdup (arg
);
3823 fname
= xstrdup (arg
);
3825 if (strcmp (fname
, "-") != 0 && access (fname
, F_OK
) < 0)
3826 perror_with_name (fname
);
3828 add_infile (arg
, spec_lang
);
3834 read_cmdline_option (&global_options
, &global_options_set
,
3835 decoded_options
+ j
, UNKNOWN_LOCATION
,
3836 CL_DRIVER
, &handlers
, global_dc
);
3839 /* If -save-temps=obj and -o name, create the prefix to use for %b.
3840 Otherwise just make -save-temps=obj the same as -save-temps=cwd. */
3841 if (save_temps_flag
== SAVE_TEMPS_OBJ
&& save_temps_prefix
!= NULL
)
3843 save_temps_length
= strlen (save_temps_prefix
);
3844 temp
= strrchr (lbasename (save_temps_prefix
), '.');
3847 save_temps_length
-= strlen (temp
);
3848 save_temps_prefix
[save_temps_length
] = '\0';
3852 else if (save_temps_prefix
!= NULL
)
3854 free (save_temps_prefix
);
3855 save_temps_prefix
= NULL
;
3858 if (save_temps_flag
&& use_pipes
)
3860 /* -save-temps overrides -pipe, so that temp files are produced */
3861 if (save_temps_flag
)
3862 warning (0, "-pipe ignored because -save-temps specified");
3868 const char *gcd
= getenv ("GCC_COMPARE_DEBUG");
3870 if (gcd
&& gcd
[0] == '-')
3873 compare_debug_opt
= gcd
;
3875 else if (gcd
&& *gcd
&& strcmp (gcd
, "0"))
3878 compare_debug_opt
= "-gtoggle";
3881 else if (compare_debug
< 0)
3884 gcc_assert (!compare_debug_opt
);
3887 /* Set up the search paths. We add directories that we expect to
3888 contain GNU Toolchain components before directories specified by
3889 the machine description so that we will find GNU components (like
3890 the GNU assembler) before those of the host system. */
3892 /* If we don't know where the toolchain has been installed, use the
3893 configured-in locations. */
3894 if (!gcc_exec_prefix
)
3897 add_prefix (&exec_prefixes
, standard_libexec_prefix
, "GCC",
3898 PREFIX_PRIORITY_LAST
, 1, 0);
3899 add_prefix (&exec_prefixes
, standard_libexec_prefix
, "BINUTILS",
3900 PREFIX_PRIORITY_LAST
, 2, 0);
3901 add_prefix (&exec_prefixes
, standard_exec_prefix
, "BINUTILS",
3902 PREFIX_PRIORITY_LAST
, 2, 0);
3904 add_prefix (&startfile_prefixes
, standard_exec_prefix
, "BINUTILS",
3905 PREFIX_PRIORITY_LAST
, 1, 0);
3908 gcc_assert (!IS_ABSOLUTE_PATH (tooldir_base_prefix
));
3909 tooldir_prefix
= concat (tooldir_base_prefix
, spec_machine
,
3910 dir_separator_str
, NULL
);
3912 /* Look for tools relative to the location from which the driver is
3913 running, or, if that is not available, the configured prefix. */
3915 = concat (gcc_exec_prefix
? gcc_exec_prefix
: standard_exec_prefix
,
3916 spec_machine
, dir_separator_str
,
3917 spec_version
, dir_separator_str
, tooldir_prefix
, NULL
);
3919 add_prefix (&exec_prefixes
,
3920 concat (tooldir_prefix
, "bin", dir_separator_str
, NULL
),
3921 "BINUTILS", PREFIX_PRIORITY_LAST
, 0, 0);
3922 add_prefix (&startfile_prefixes
,
3923 concat (tooldir_prefix
, "lib", dir_separator_str
, NULL
),
3924 "BINUTILS", PREFIX_PRIORITY_LAST
, 0, 1);
3926 #if defined(TARGET_SYSTEM_ROOT_RELOCATABLE) && !defined(VMS)
3927 /* If the normal TARGET_SYSTEM_ROOT is inside of $exec_prefix,
3928 then consider it to relocate with the rest of the GCC installation
3929 if GCC_EXEC_PREFIX is set.
3930 ``make_relative_prefix'' is not compiled for VMS, so don't call it. */
3931 if (target_system_root
&& !target_system_root_changed
&& gcc_exec_prefix
)
3933 char *tmp_prefix
= get_relative_prefix (decoded_options
[0].arg
,
3934 standard_bindir_prefix
,
3935 target_system_root
);
3936 if (tmp_prefix
&& access_check (tmp_prefix
, F_OK
) == 0)
3938 target_system_root
= tmp_prefix
;
3939 target_system_root_changed
= 1;
3944 /* More prefixes are enabled in main, after we read the specs file
3945 and determine whether this is cross-compilation or not. */
3947 if (n_infiles
== last_language_n_infiles
&& spec_lang
!= 0)
3948 warning (0, "%<-x %s%> after last input file has no effect", spec_lang
);
3950 if (compare_debug
== 2 || compare_debug
== 3)
3953 switches
[n_switches
].part1
= concat ("fcompare-debug=",
3956 switches
[n_switches
].args
= 0;
3957 switches
[n_switches
].live_cond
= 0;
3958 switches
[n_switches
].validated
= 0;
3959 switches
[n_switches
].ordering
= 0;
3964 /* Ensure we only invoke each subprocess once. */
3965 if (print_subprocess_help
|| print_help_list
|| print_version
)
3969 /* Create a dummy input file, so that we can pass
3970 the help option on to the various sub-processes. */
3971 add_infile ("help-dummy", "c");
3975 switches
[n_switches
].part1
= 0;
3977 infiles
[n_infiles
].name
= 0;
3980 /* Store switches not filtered out by %<S in spec in COLLECT_GCC_OPTIONS
3981 and place that in the environment. */
3984 set_collect_gcc_options (void)
3989 /* Build COLLECT_GCC_OPTIONS to have all of the options specified to
3991 obstack_grow (&collect_obstack
, "COLLECT_GCC_OPTIONS=",
3992 sizeof ("COLLECT_GCC_OPTIONS=") - 1);
3995 for (i
= 0; (int) i
< n_switches
; i
++)
3997 const char *const *args
;
4000 obstack_grow (&collect_obstack
, " ", 1);
4004 /* Ignore elided switches. */
4005 if ((switches
[i
].live_cond
4006 & (SWITCH_IGNORE
| SWITCH_KEEP_FOR_GCC
))
4010 obstack_grow (&collect_obstack
, "'-", 2);
4011 q
= switches
[i
].part1
;
4012 while ((p
= strchr (q
, '\'')))
4014 obstack_grow (&collect_obstack
, q
, p
- q
);
4015 obstack_grow (&collect_obstack
, "'\\''", 4);
4018 obstack_grow (&collect_obstack
, q
, strlen (q
));
4019 obstack_grow (&collect_obstack
, "'", 1);
4021 for (args
= switches
[i
].args
; args
&& *args
; args
++)
4023 obstack_grow (&collect_obstack
, " '", 2);
4025 while ((p
= strchr (q
, '\'')))
4027 obstack_grow (&collect_obstack
, q
, p
- q
);
4028 obstack_grow (&collect_obstack
, "'\\''", 4);
4031 obstack_grow (&collect_obstack
, q
, strlen (q
));
4032 obstack_grow (&collect_obstack
, "'", 1);
4035 obstack_grow (&collect_obstack
, "\0", 1);
4036 xputenv (XOBFINISH (&collect_obstack
, char *));
4039 /* Process a spec string, accumulating and running commands. */
4041 /* These variables describe the input file name.
4042 input_file_number is the index on outfiles of this file,
4043 so that the output file name can be stored for later use by %o.
4044 input_basename is the start of the part of the input file
4045 sans all directory names, and basename_length is the number
4046 of characters starting there excluding the suffix .c or whatever. */
4048 static const char *gcc_input_filename
;
4049 static int input_file_number
;
4050 size_t input_filename_length
;
4051 static int basename_length
;
4052 static int suffixed_basename_length
;
4053 static const char *input_basename
;
4054 static const char *input_suffix
;
4055 #ifndef HOST_LACKS_INODE_NUMBERS
4056 static struct stat input_stat
;
4058 static int input_stat_set
;
4060 /* The compiler used to process the current input file. */
4061 static struct compiler
*input_file_compiler
;
4063 /* These are variables used within do_spec and do_spec_1. */
4065 /* Nonzero if an arg has been started and not yet terminated
4066 (with space, tab or newline). */
4067 static int arg_going
;
4069 /* Nonzero means %d or %g has been seen; the next arg to be terminated
4070 is a temporary file name. */
4071 static int delete_this_arg
;
4073 /* Nonzero means %w has been seen; the next arg to be terminated
4074 is the output file name of this compilation. */
4075 static int this_is_output_file
;
4077 /* Nonzero means %s has been seen; the next arg to be terminated
4078 is the name of a library file and we should try the standard
4079 search dirs for it. */
4080 static int this_is_library_file
;
4082 /* Nonzero means %T has been seen; the next arg to be terminated
4083 is the name of a linker script and we should try all of the
4084 standard search dirs for it. If it is found insert a --script
4085 command line switch and then substitute the full path in place,
4086 otherwise generate an error message. */
4087 static int this_is_linker_script
;
4089 /* Nonzero means that the input of this command is coming from a pipe. */
4090 static int input_from_pipe
;
4092 /* Nonnull means substitute this for any suffix when outputting a switches
4094 static const char *suffix_subst
;
4096 /* If there is an argument being accumulated, terminate it and store it. */
4099 end_going_arg (void)
4105 obstack_1grow (&obstack
, 0);
4106 string
= XOBFINISH (&obstack
, const char *);
4107 if (this_is_library_file
)
4108 string
= find_file (string
);
4109 if (this_is_linker_script
)
4111 char * full_script_path
= find_a_file (&startfile_prefixes
, string
, R_OK
, true);
4113 if (full_script_path
== NULL
)
4115 error ("unable to locate default linker script %qs in the library search paths", string
);
4116 /* Script was not found on search path. */
4119 store_arg ("--script", false, false);
4120 string
= full_script_path
;
4122 store_arg (string
, delete_this_arg
, this_is_output_file
);
4123 if (this_is_output_file
)
4124 outfiles
[input_file_number
] = string
;
4130 /* Parse the WRAPPER string which is a comma separated list of the command line
4131 and insert them into the beginning of argbuf. */
4134 insert_wrapper (const char *wrapper
)
4138 char *buf
= xstrdup (wrapper
);
4140 unsigned int old_length
= VEC_length (const_char_p
, argbuf
);
4148 while ((p
= strchr (p
, ',')) != NULL
);
4150 VEC_safe_grow (const_char_p
, heap
, argbuf
, old_length
+ n
);
4151 memmove (VEC_address (const_char_p
, argbuf
) + n
,
4152 VEC_address (const_char_p
, argbuf
),
4153 old_length
* sizeof (const_char_p
));
4164 VEC_replace (const_char_p
, argbuf
, i
, p
);
4167 while ((p
= strchr (p
, ',')) != NULL
);
4168 gcc_assert (i
== n
);
4171 /* Process the spec SPEC and run the commands specified therein.
4172 Returns 0 if the spec is successfully processed; -1 if failed. */
4175 do_spec (const char *spec
)
4179 value
= do_spec_2 (spec
);
4181 /* Force out any unfinished command.
4182 If -pipe, this forces out the last command if it ended in `|'. */
4185 if (VEC_length (const_char_p
, argbuf
) > 0
4186 && !strcmp (VEC_last (const_char_p
, argbuf
), "|"))
4187 VEC_pop (const_char_p
, argbuf
);
4189 set_collect_gcc_options ();
4191 if (VEC_length (const_char_p
, argbuf
) > 0)
4199 do_spec_2 (const char *spec
)
4205 delete_this_arg
= 0;
4206 this_is_output_file
= 0;
4207 this_is_library_file
= 0;
4208 this_is_linker_script
= 0;
4209 input_from_pipe
= 0;
4210 suffix_subst
= NULL
;
4212 result
= do_spec_1 (spec
, 0, NULL
);
4220 /* Process the given spec string and add any new options to the end
4221 of the switches/n_switches array. */
4224 do_option_spec (const char *name
, const char *spec
)
4226 unsigned int i
, value_count
, value_len
;
4227 const char *p
, *q
, *value
;
4228 char *tmp_spec
, *tmp_spec_p
;
4230 if (configure_default_options
[0].name
== NULL
)
4233 for (i
= 0; i
< ARRAY_SIZE (configure_default_options
); i
++)
4234 if (strcmp (configure_default_options
[i
].name
, name
) == 0)
4236 if (i
== ARRAY_SIZE (configure_default_options
))
4239 value
= configure_default_options
[i
].value
;
4240 value_len
= strlen (value
);
4242 /* Compute the size of the final spec. */
4245 while ((p
= strstr (p
, "%(VALUE)")) != NULL
)
4251 /* Replace each %(VALUE) by the specified value. */
4252 tmp_spec
= (char *) alloca (strlen (spec
) + 1
4253 + value_count
* (value_len
- strlen ("%(VALUE)")));
4254 tmp_spec_p
= tmp_spec
;
4256 while ((p
= strstr (q
, "%(VALUE)")) != NULL
)
4258 memcpy (tmp_spec_p
, q
, p
- q
);
4259 tmp_spec_p
= tmp_spec_p
+ (p
- q
);
4260 memcpy (tmp_spec_p
, value
, value_len
);
4261 tmp_spec_p
+= value_len
;
4262 q
= p
+ strlen ("%(VALUE)");
4264 strcpy (tmp_spec_p
, q
);
4266 do_self_spec (tmp_spec
);
4269 /* Process the given spec string and add any new options to the end
4270 of the switches/n_switches array. */
4273 do_self_spec (const char *spec
)
4278 do_spec_1 (" ", 0, NULL
);
4280 /* Mark %<S switches processed by do_self_spec to be ignored permanently.
4281 do_self_specs adds the replacements to switches array, so it shouldn't
4282 be processed afterwards. */
4283 for (i
= 0; i
< n_switches
; i
++)
4284 if ((switches
[i
].live_cond
& SWITCH_IGNORE
))
4285 switches
[i
].live_cond
|= SWITCH_IGNORE_PERMANENTLY
;
4287 if (VEC_length (const_char_p
, argbuf
) > 0)
4289 const char **argbuf_copy
;
4290 struct cl_decoded_option
*decoded_options
;
4291 struct cl_option_handlers handlers
;
4292 unsigned int decoded_options_count
;
4295 /* Create a copy of argbuf with a dummy argv[0] entry for
4296 decode_cmdline_options_to_array. */
4297 argbuf_copy
= XNEWVEC (const char *,
4298 VEC_length (const_char_p
, argbuf
) + 1);
4299 argbuf_copy
[0] = "";
4300 memcpy (argbuf_copy
+ 1, VEC_address (const_char_p
, argbuf
),
4301 VEC_length (const_char_p
, argbuf
) * sizeof (const char *));
4303 decode_cmdline_options_to_array (VEC_length (const_char_p
, argbuf
) + 1,
4305 CL_DRIVER
, &decoded_options
,
4306 &decoded_options_count
);
4308 set_option_handlers (&handlers
);
4310 for (j
= 1; j
< decoded_options_count
; j
++)
4312 switch (decoded_options
[j
].opt_index
)
4314 case OPT_SPECIAL_input_file
:
4315 /* Specs should only generate options, not input
4317 if (strcmp (decoded_options
[j
].arg
, "-") != 0)
4318 fatal_error ("switch %qs does not start with %<-%>",
4319 decoded_options
[j
].arg
);
4321 fatal_error ("spec-generated switch is just %<-%>");
4324 case OPT_fcompare_debug_second
:
4325 case OPT_fcompare_debug
:
4326 case OPT_fcompare_debug_
:
4328 /* Avoid duplicate processing of some options from
4329 compare-debug specs; just save them here. */
4330 save_switch (decoded_options
[j
].canonical_option
[0],
4331 (decoded_options
[j
].canonical_option_num_elements
4333 &decoded_options
[j
].canonical_option
[1], false);
4337 read_cmdline_option (&global_options
, &global_options_set
,
4338 decoded_options
+ j
, UNKNOWN_LOCATION
,
4339 CL_DRIVER
, &handlers
, global_dc
);
4345 switches
[n_switches
].part1
= 0;
4349 /* Callback for processing %D and %I specs. */
4351 struct spec_path_info
{
4356 bool separate_options
;
4360 spec_path (char *path
, void *data
)
4362 struct spec_path_info
*info
= (struct spec_path_info
*) data
;
4366 if (info
->omit_relative
&& !IS_ABSOLUTE_PATH (path
))
4369 if (info
->append_len
!= 0)
4371 len
= strlen (path
);
4372 memcpy (path
+ len
, info
->append
, info
->append_len
+ 1);
4375 if (!is_directory (path
, true))
4378 do_spec_1 (info
->option
, 1, NULL
);
4379 if (info
->separate_options
)
4380 do_spec_1 (" ", 0, NULL
);
4382 if (info
->append_len
== 0)
4384 len
= strlen (path
);
4385 save
= path
[len
- 1];
4386 if (IS_DIR_SEPARATOR (path
[len
- 1]))
4387 path
[len
- 1] = '\0';
4390 do_spec_1 (path
, 1, NULL
);
4391 do_spec_1 (" ", 0, NULL
);
4393 /* Must not damage the original path. */
4394 if (info
->append_len
== 0)
4395 path
[len
- 1] = save
;
4400 /* Create a temporary FILE with the contents of ARGV. Add @FILE to the
4404 create_at_file (char **argv
)
4406 char *temp_file
= make_temp_file ("");
4407 char *at_argument
= concat ("@", temp_file
, NULL
);
4408 FILE *f
= fopen (temp_file
, "w");
4412 fatal_error ("could not open temporary response file %s",
4415 status
= writeargv (argv
, f
);
4418 fatal_error ("could not write to temporary response file %s",
4421 status
= fclose (f
);
4424 fatal_error ("could not close temporary response file %s",
4427 store_arg (at_argument
, 0, 0);
4429 record_temp_file (temp_file
, !save_temps_flag
, !save_temps_flag
);
4432 /* True if we should compile INFILE. */
4435 compile_input_file_p (struct infile
*infile
)
4437 if ((!infile
->language
) || (infile
->language
[0] != '*'))
4438 if (infile
->incompiler
== input_file_compiler
)
4443 /* Process each member of VEC as a spec. */
4446 do_specs_vec (VEC(char_p
,heap
) *vec
)
4451 FOR_EACH_VEC_ELT (char_p
, vec
, ix
, opt
)
4453 do_spec_1 (opt
, 1, NULL
);
4454 /* Make each accumulated option a separate argument. */
4455 do_spec_1 (" ", 0, NULL
);
4459 /* Process the sub-spec SPEC as a portion of a larger spec.
4460 This is like processing a whole spec except that we do
4461 not initialize at the beginning and we do not supply a
4462 newline by default at the end.
4463 INSWITCH nonzero means don't process %-sequences in SPEC;
4464 in this case, % is treated as an ordinary character.
4465 This is used while substituting switches.
4466 INSWITCH nonzero also causes SPC not to terminate an argument.
4468 Value is zero unless a line was finished
4469 and the command on that line reported an error. */
4472 do_spec_1 (const char *spec
, int inswitch
, const char *soft_matched_part
)
4474 const char *p
= spec
;
4479 /* If it's an empty string argument to a switch, keep it as is. */
4480 if (inswitch
&& !*p
)
4484 /* If substituting a switch, treat all chars like letters.
4485 Otherwise, NL, SPC, TAB and % are special. */
4486 switch (inswitch
? 'a' : c
)
4491 if (VEC_length (const_char_p
, argbuf
) > 0
4492 && !strcmp (VEC_last (const_char_p
, argbuf
), "|"))
4494 /* A `|' before the newline means use a pipe here,
4495 but only if -pipe was specified.
4496 Otherwise, execute now and don't pass the `|' as an arg. */
4499 input_from_pipe
= 1;
4503 VEC_pop (const_char_p
, argbuf
);
4506 set_collect_gcc_options ();
4508 if (VEC_length (const_char_p
, argbuf
) > 0)
4514 /* Reinitialize for a new command, and for a new argument. */
4517 delete_this_arg
= 0;
4518 this_is_output_file
= 0;
4519 this_is_library_file
= 0;
4520 this_is_linker_script
= 0;
4521 input_from_pipe
= 0;
4528 obstack_1grow (&obstack
, c
);
4536 /* Reinitialize for a new argument. */
4537 delete_this_arg
= 0;
4538 this_is_output_file
= 0;
4539 this_is_library_file
= 0;
4540 this_is_linker_script
= 0;
4547 fatal_error ("spec %qs invalid", spec
);
4550 if (save_temps_length
)
4551 obstack_grow (&obstack
, save_temps_prefix
, save_temps_length
);
4553 obstack_grow (&obstack
, input_basename
, basename_length
);
4554 if (compare_debug
< 0)
4555 obstack_grow (&obstack
, ".gk", 3);
4560 if (save_temps_length
)
4561 obstack_grow (&obstack
, save_temps_prefix
, save_temps_length
);
4563 obstack_grow (&obstack
, input_basename
, suffixed_basename_length
);
4564 if (compare_debug
< 0)
4565 obstack_grow (&obstack
, ".gk", 3);
4570 delete_this_arg
= 2;
4573 /* Dump out the directories specified with LIBRARY_PATH,
4574 followed by the absolute directories
4575 that we search for startfiles. */
4578 struct spec_path_info info
;
4581 info
.append_len
= 0;
4582 #ifdef RELATIVE_PREFIX_NOT_LINKDIR
4583 /* Used on systems which record the specified -L dirs
4584 and use them to search for dynamic linking.
4585 Relative directories always come from -B,
4586 and it is better not to use them for searching
4587 at run time. In particular, stage1 loses. */
4588 info
.omit_relative
= true;
4590 info
.omit_relative
= false;
4592 info
.separate_options
= false;
4594 for_each_path (&startfile_prefixes
, true, 0, spec_path
, &info
);
4599 /* %efoo means report an error with `foo' as error message
4600 and don't execute any more commands for this file. */
4604 while (*p
!= 0 && *p
!= '\n')
4606 buf
= (char *) alloca (p
- q
+ 1);
4607 strncpy (buf
, q
, p
- q
);
4609 error ("%s", _(buf
));
4614 /* %nfoo means report a notice with `foo' on stderr. */
4618 while (*p
!= 0 && *p
!= '\n')
4620 buf
= (char *) alloca (p
- q
+ 1);
4621 strncpy (buf
, q
, p
- q
);
4623 inform (0, "%s", _(buf
));
4633 /* If save_temps_flag is off, and the HOST_BIT_BUCKET is
4634 defined, and it is not a directory, and it is
4635 writable, use it. Otherwise, treat this like any
4636 other temporary file. */
4638 if ((!save_temps_flag
)
4639 && (stat (HOST_BIT_BUCKET
, &st
) == 0) && (!S_ISDIR (st
.st_mode
))
4640 && (access (HOST_BIT_BUCKET
, W_OK
) == 0))
4642 obstack_grow (&obstack
, HOST_BIT_BUCKET
,
4643 strlen (HOST_BIT_BUCKET
));
4644 delete_this_arg
= 0;
4649 goto create_temp_file
;
4653 obstack_1grow (&obstack
, '-');
4654 delete_this_arg
= 0;
4657 /* consume suffix */
4658 while (*p
== '.' || ISALNUM ((unsigned char) *p
))
4660 if (p
[0] == '%' && p
[1] == 'O')
4665 goto create_temp_file
;
4669 /* consume suffix */
4670 while (*p
== '.' || ISALNUM ((unsigned char) *p
))
4672 if (p
[0] == '%' && p
[1] == 'O')
4677 goto create_temp_file
;
4683 struct temp_name
*t
;
4685 const char *suffix
= p
;
4686 char *saved_suffix
= NULL
;
4688 while (*p
== '.' || ISALNUM ((unsigned char) *p
))
4690 suffix_length
= p
- suffix
;
4691 if (p
[0] == '%' && p
[1] == 'O')
4694 /* We don't support extra suffix characters after %O. */
4695 if (*p
== '.' || ISALNUM ((unsigned char) *p
))
4696 fatal_error ("spec %qs has invalid %<%%0%c%>", spec
, *p
);
4697 if (suffix_length
== 0)
4698 suffix
= TARGET_OBJECT_SUFFIX
;
4702 = XNEWVEC (char, suffix_length
4703 + strlen (TARGET_OBJECT_SUFFIX
));
4704 strncpy (saved_suffix
, suffix
, suffix_length
);
4705 strcpy (saved_suffix
+ suffix_length
,
4706 TARGET_OBJECT_SUFFIX
);
4708 suffix_length
+= strlen (TARGET_OBJECT_SUFFIX
);
4711 if (compare_debug
< 0)
4713 suffix
= concat (".gk", suffix
, NULL
);
4717 /* If -save-temps=obj and -o were specified, use that for the
4719 if (save_temps_length
)
4722 temp_filename_length
4723 = save_temps_length
+ suffix_length
+ 1;
4724 tmp
= (char *) alloca (temp_filename_length
);
4725 memcpy (tmp
, save_temps_prefix
, save_temps_length
);
4726 memcpy (tmp
+ save_temps_length
, suffix
, suffix_length
);
4727 tmp
[save_temps_length
+ suffix_length
] = '\0';
4728 temp_filename
= save_string (tmp
,
4729 temp_filename_length
+ 1);
4730 obstack_grow (&obstack
, temp_filename
,
4731 temp_filename_length
);
4733 delete_this_arg
= 0;
4737 /* If the gcc_input_filename has the same suffix specified
4738 for the %g, %u, or %U, and -save-temps is specified,
4739 we could end up using that file as an intermediate
4740 thus clobbering the user's source file (.e.g.,
4741 gcc -save-temps foo.s would clobber foo.s with the
4742 output of cpp0). So check for this condition and
4743 generate a temp file as the intermediate. */
4745 if (save_temps_flag
)
4748 temp_filename_length
= basename_length
+ suffix_length
+ 1;
4749 tmp
= (char *) alloca (temp_filename_length
);
4750 memcpy (tmp
, input_basename
, basename_length
);
4751 memcpy (tmp
+ basename_length
, suffix
, suffix_length
);
4752 tmp
[basename_length
+ suffix_length
] = '\0';
4753 temp_filename
= tmp
;
4755 if (filename_cmp (temp_filename
, gcc_input_filename
) != 0)
4757 #ifndef HOST_LACKS_INODE_NUMBERS
4758 struct stat st_temp
;
4760 /* Note, set_input() resets input_stat_set to 0. */
4761 if (input_stat_set
== 0)
4763 input_stat_set
= stat (gcc_input_filename
,
4765 if (input_stat_set
>= 0)
4769 /* If we have the stat for the gcc_input_filename
4770 and we can do the stat for the temp_filename
4771 then the they could still refer to the same
4772 file if st_dev/st_ino's are the same. */
4773 if (input_stat_set
!= 1
4774 || stat (temp_filename
, &st_temp
) < 0
4775 || input_stat
.st_dev
!= st_temp
.st_dev
4776 || input_stat
.st_ino
!= st_temp
.st_ino
)
4778 /* Just compare canonical pathnames. */
4779 char* input_realname
= lrealpath (gcc_input_filename
);
4780 char* temp_realname
= lrealpath (temp_filename
);
4781 bool files_differ
= filename_cmp (input_realname
, temp_realname
);
4782 free (input_realname
);
4783 free (temp_realname
);
4787 temp_filename
= save_string (temp_filename
,
4788 temp_filename_length
+ 1);
4789 obstack_grow (&obstack
, temp_filename
,
4790 temp_filename_length
);
4792 delete_this_arg
= 0;
4798 /* See if we already have an association of %g/%u/%U and
4800 for (t
= temp_names
; t
; t
= t
->next
)
4801 if (t
->length
== suffix_length
4802 && strncmp (t
->suffix
, suffix
, suffix_length
) == 0
4803 && t
->unique
== (c
== 'u' || c
== 'U' || c
== 'j'))
4806 /* Make a new association if needed. %u and %j
4808 if (t
== 0 || c
== 'u' || c
== 'j')
4812 t
= XNEW (struct temp_name
);
4813 t
->next
= temp_names
;
4816 t
->length
= suffix_length
;
4819 t
->suffix
= saved_suffix
;
4820 saved_suffix
= NULL
;
4823 t
->suffix
= save_string (suffix
, suffix_length
);
4824 t
->unique
= (c
== 'u' || c
== 'U' || c
== 'j');
4825 temp_filename
= make_temp_file (t
->suffix
);
4826 temp_filename_length
= strlen (temp_filename
);
4827 t
->filename
= temp_filename
;
4828 t
->filename_length
= temp_filename_length
;
4831 free (saved_suffix
);
4833 obstack_grow (&obstack
, t
->filename
, t
->filename_length
);
4834 delete_this_arg
= 1;
4842 if (at_file_supplied
)
4844 /* We are going to expand `%i' to `@FILE', where FILE
4845 is a newly-created temporary filename. The filenames
4846 that would usually be expanded in place of %o will be
4847 written to the temporary file. */
4852 for (i
= 0; i
< n_infiles
; i
++)
4853 if (compile_input_file_p (&infiles
[i
]))
4856 argv
= (char **) alloca (sizeof (char *) * (n_files
+ 1));
4858 /* Copy the strings over. */
4859 for (i
= 0, j
= 0; i
< n_infiles
; i
++)
4860 if (compile_input_file_p (&infiles
[i
]))
4862 argv
[j
] = CONST_CAST (char *, infiles
[i
].name
);
4863 infiles
[i
].compiled
= true;
4868 create_at_file (argv
);
4871 for (i
= 0; (int) i
< n_infiles
; i
++)
4872 if (compile_input_file_p (&infiles
[i
]))
4874 store_arg (infiles
[i
].name
, 0, 0);
4875 infiles
[i
].compiled
= true;
4880 obstack_grow (&obstack
, gcc_input_filename
,
4881 input_filename_length
);
4888 struct spec_path_info info
;
4892 do_spec_1 ("-imultilib", 1, NULL
);
4893 /* Make this a separate argument. */
4894 do_spec_1 (" ", 0, NULL
);
4895 do_spec_1 (multilib_dir
, 1, NULL
);
4896 do_spec_1 (" ", 0, NULL
);
4899 if (gcc_exec_prefix
)
4901 do_spec_1 ("-iprefix", 1, NULL
);
4902 /* Make this a separate argument. */
4903 do_spec_1 (" ", 0, NULL
);
4904 do_spec_1 (gcc_exec_prefix
, 1, NULL
);
4905 do_spec_1 (" ", 0, NULL
);
4908 if (target_system_root_changed
||
4909 (target_system_root
&& target_sysroot_hdrs_suffix
))
4911 do_spec_1 ("-isysroot", 1, NULL
);
4912 /* Make this a separate argument. */
4913 do_spec_1 (" ", 0, NULL
);
4914 do_spec_1 (target_system_root
, 1, NULL
);
4915 if (target_sysroot_hdrs_suffix
)
4916 do_spec_1 (target_sysroot_hdrs_suffix
, 1, NULL
);
4917 do_spec_1 (" ", 0, NULL
);
4920 info
.option
= "-isystem";
4921 info
.append
= "include";
4922 info
.append_len
= strlen (info
.append
);
4923 info
.omit_relative
= false;
4924 info
.separate_options
= true;
4926 for_each_path (&include_prefixes
, false, info
.append_len
,
4929 info
.append
= "include-fixed";
4930 if (*sysroot_hdrs_suffix_spec
)
4931 info
.append
= concat (info
.append
, dir_separator_str
,
4932 multilib_dir
, NULL
);
4933 info
.append_len
= strlen (info
.append
);
4934 for_each_path (&include_prefixes
, false, info
.append_len
,
4941 int max
= n_infiles
;
4942 max
+= lang_specific_extra_outfiles
;
4944 if (HAVE_GNU_LD
&& at_file_supplied
)
4946 /* We are going to expand `%o' to `@FILE', where FILE
4947 is a newly-created temporary filename. The filenames
4948 that would usually be expanded in place of %o will be
4949 written to the temporary file. */
4954 /* Convert OUTFILES into a form suitable for writeargv. */
4956 /* Determine how many are non-NULL. */
4957 for (n_files
= 0, i
= 0; i
< max
; i
++)
4958 n_files
+= outfiles
[i
] != NULL
;
4960 argv
= (char **) alloca (sizeof (char *) * (n_files
+ 1));
4962 /* Copy the strings over. */
4963 for (i
= 0, j
= 0; i
< max
; i
++)
4966 argv
[j
] = CONST_CAST (char *, outfiles
[i
]);
4971 create_at_file (argv
);
4974 for (i
= 0; i
< max
; i
++)
4976 store_arg (outfiles
[i
], 0, 0);
4981 obstack_grow (&obstack
, TARGET_OBJECT_SUFFIX
, strlen (TARGET_OBJECT_SUFFIX
));
4986 this_is_library_file
= 1;
4990 this_is_linker_script
= 1;
4994 outfiles
[input_file_number
] = NULL
;
4998 this_is_output_file
= 1;
5003 unsigned int cur_index
= VEC_length (const_char_p
, argbuf
);
5004 /* Handle the {...} following the %W. */
5006 fatal_error ("spec %qs has invalid %<%%W%c%>", spec
, *p
);
5007 p
= handle_braces (p
+ 1);
5011 /* If any args were output, mark the last one for deletion
5013 if (VEC_length (const_char_p
, argbuf
) != cur_index
)
5014 record_temp_file (VEC_last (const_char_p
, argbuf
), 0, 1);
5018 /* %x{OPTION} records OPTION for %X to output. */
5026 /* Skip past the option value and make a copy. */
5028 fatal_error ("spec %qs has invalid %<%%x%c%>", spec
, *p
);
5031 string
= save_string (p1
+ 1, p
- p1
- 2);
5033 /* See if we already recorded this option. */
5034 FOR_EACH_VEC_ELT (char_p
, linker_options
, ix
, opt
)
5035 if (! strcmp (string
, opt
))
5041 /* This option is new; add it. */
5042 add_linker_option (string
, strlen (string
));
5046 /* Dump out the options accumulated previously using %x. */
5048 do_specs_vec (linker_options
);
5051 /* Dump out the options accumulated previously using -Wa,. */
5053 do_specs_vec (assembler_options
);
5056 /* Dump out the options accumulated previously using -Wp,. */
5058 do_specs_vec (preprocessor_options
);
5061 /* Here are digits and numbers that just process
5062 a certain constant string as a spec. */
5065 value
= do_spec_1 (cc1_spec
, 0, NULL
);
5071 value
= do_spec_1 (cc1plus_spec
, 0, NULL
);
5077 value
= do_spec_1 (asm_spec
, 0, NULL
);
5083 value
= do_spec_1 (asm_final_spec
, 0, NULL
);
5090 const char *const spec
5091 = (input_file_compiler
->cpp_spec
5092 ? input_file_compiler
->cpp_spec
5094 value
= do_spec_1 (spec
, 0, NULL
);
5101 value
= do_spec_1 (endfile_spec
, 0, NULL
);
5107 value
= do_spec_1 (link_spec
, 0, NULL
);
5113 value
= do_spec_1 (lib_spec
, 0, NULL
);
5119 value
= do_spec_1 (libgcc_spec
, 0, NULL
);
5125 /* We assume there is a directory
5126 separator at the end of this string. */
5127 if (target_system_root
)
5129 obstack_grow (&obstack
, target_system_root
,
5130 strlen (target_system_root
));
5131 if (target_sysroot_suffix
)
5132 obstack_grow (&obstack
, target_sysroot_suffix
,
5133 strlen (target_sysroot_suffix
));
5138 value
= do_spec_1 (startfile_spec
, 0, NULL
);
5143 /* Here we define characters other than letters and digits. */
5146 p
= handle_braces (p
);
5152 p
= handle_spec_function (p
);
5158 obstack_1grow (&obstack
, '%');
5165 while (p
[len
] && p
[len
] != ' ' && p
[len
] != '%')
5167 suffix_subst
= save_string (p
- 1, len
+ 1);
5172 /* Henceforth ignore the option(s) matching the pattern
5178 int have_wildcard
= 0;
5183 switch_option
= SWITCH_IGNORE
| SWITCH_KEEP_FOR_GCC
;
5185 switch_option
= SWITCH_IGNORE
;
5187 while (p
[len
] && p
[len
] != ' ' && p
[len
] != '\t')
5190 if (p
[len
-1] == '*')
5193 for (i
= 0; i
< n_switches
; i
++)
5194 if (!strncmp (switches
[i
].part1
, p
, len
- have_wildcard
)
5195 && (have_wildcard
|| switches
[i
].part1
[len
] == '\0'))
5197 switches
[i
].live_cond
|= switch_option
;
5198 switches
[i
].validated
= 1;
5206 if (soft_matched_part
)
5208 if (soft_matched_part
[0])
5209 do_spec_1 (soft_matched_part
, 1, NULL
);
5210 do_spec_1 (" ", 0, NULL
);
5213 /* Catch the case where a spec string contains something like
5214 '%{foo:%*}'. i.e. there is no * in the pattern on the left
5215 hand side of the :. */
5216 error ("spec failure: %<%%*%> has not been initialized by pattern match");
5219 /* Process a string found as the value of a spec given by name.
5220 This feature allows individual machine descriptions
5221 to add and use their own specs. */
5224 const char *name
= p
;
5225 struct spec_list
*sl
;
5228 /* The string after the S/P is the name of a spec that is to be
5230 while (*p
&& *p
!= ')')
5233 /* See if it's in the list. */
5234 for (len
= p
- name
, sl
= specs
; sl
; sl
= sl
->next
)
5235 if (sl
->name_len
== len
&& !strncmp (sl
->name
, name
, len
))
5237 name
= *(sl
->ptr_spec
);
5239 fnotice (stderr
, "Processing spec (%s), which is '%s'\n",
5247 value
= do_spec_1 (name
, 0, NULL
);
5252 /* Discard the closing paren. */
5259 error ("spec failure: unrecognized spec option %qc", c
);
5265 /* Backslash: treat next character as ordinary. */
5270 /* Ordinary character: put it into the current argument. */
5271 obstack_1grow (&obstack
, c
);
5275 /* End of string. If we are processing a spec function, we need to
5276 end any pending argument. */
5277 if (processing_spec_function
)
5283 /* Look up a spec function. */
5285 static const struct spec_function
*
5286 lookup_spec_function (const char *name
)
5288 const struct spec_function
*sf
;
5290 for (sf
= static_spec_functions
; sf
->name
!= NULL
; sf
++)
5291 if (strcmp (sf
->name
, name
) == 0)
5297 /* Evaluate a spec function. */
5300 eval_spec_function (const char *func
, const char *args
)
5302 const struct spec_function
*sf
;
5303 const char *funcval
;
5305 /* Saved spec processing context. */
5306 VEC(const_char_p
,heap
) *save_argbuf
;
5309 int save_delete_this_arg
;
5310 int save_this_is_output_file
;
5311 int save_this_is_library_file
;
5312 int save_input_from_pipe
;
5313 int save_this_is_linker_script
;
5314 const char *save_suffix_subst
;
5317 sf
= lookup_spec_function (func
);
5319 fatal_error ("unknown spec function %qs", func
);
5321 /* Push the spec processing context. */
5322 save_argbuf
= argbuf
;
5324 save_arg_going
= arg_going
;
5325 save_delete_this_arg
= delete_this_arg
;
5326 save_this_is_output_file
= this_is_output_file
;
5327 save_this_is_library_file
= this_is_library_file
;
5328 save_this_is_linker_script
= this_is_linker_script
;
5329 save_input_from_pipe
= input_from_pipe
;
5330 save_suffix_subst
= suffix_subst
;
5332 /* Create a new spec processing context, and build the function
5336 if (do_spec_2 (args
) < 0)
5337 fatal_error ("error in args to spec function %qs", func
);
5339 /* argbuf_index is an index for the next argument to be inserted, and
5340 so contains the count of the args already inserted. */
5342 funcval
= (*sf
->func
) (VEC_length (const_char_p
, argbuf
),
5343 VEC_address (const_char_p
, argbuf
));
5345 /* Pop the spec processing context. */
5346 VEC_free (const_char_p
, heap
, argbuf
);
5347 argbuf
= save_argbuf
;
5349 arg_going
= save_arg_going
;
5350 delete_this_arg
= save_delete_this_arg
;
5351 this_is_output_file
= save_this_is_output_file
;
5352 this_is_library_file
= save_this_is_library_file
;
5353 this_is_linker_script
= save_this_is_linker_script
;
5354 input_from_pipe
= save_input_from_pipe
;
5355 suffix_subst
= save_suffix_subst
;
5360 /* Handle a spec function call of the form:
5364 ARGS is processed as a spec in a separate context and split into an
5365 argument vector in the normal fashion. The function returns a string
5366 containing a spec which we then process in the caller's context, or
5367 NULL if no processing is required. */
5370 handle_spec_function (const char *p
)
5373 const char *endp
, *funcval
;
5376 processing_spec_function
++;
5378 /* Get the function name. */
5379 for (endp
= p
; *endp
!= '\0'; endp
++)
5381 if (*endp
== '(') /* ) */
5383 /* Only allow [A-Za-z0-9], -, and _ in function names. */
5384 if (!ISALNUM (*endp
) && !(*endp
== '-' || *endp
== '_'))
5385 fatal_error ("malformed spec function name");
5387 if (*endp
!= '(') /* ) */
5388 fatal_error ("no arguments for spec function");
5389 func
= save_string (p
, endp
- p
);
5392 /* Get the arguments. */
5393 for (count
= 0; *endp
!= '\0'; endp
++)
5402 else if (*endp
== '(') /* ) */
5407 fatal_error ("malformed spec function arguments");
5408 args
= save_string (p
, endp
- p
);
5411 /* p now points to just past the end of the spec function expression. */
5413 funcval
= eval_spec_function (func
, args
);
5414 if (funcval
!= NULL
&& do_spec_1 (funcval
, 0, NULL
) < 0)
5420 processing_spec_function
--;
5425 /* Inline subroutine of handle_braces. Returns true if the current
5426 input suffix matches the atom bracketed by ATOM and END_ATOM. */
5428 input_suffix_matches (const char *atom
, const char *end_atom
)
5430 return (input_suffix
5431 && !strncmp (input_suffix
, atom
, end_atom
- atom
)
5432 && input_suffix
[end_atom
- atom
] == '\0');
5435 /* Subroutine of handle_braces. Returns true if the current
5436 input file's spec name matches the atom bracketed by ATOM and END_ATOM. */
5438 input_spec_matches (const char *atom
, const char *end_atom
)
5440 return (input_file_compiler
5441 && input_file_compiler
->suffix
5442 && input_file_compiler
->suffix
[0] != '\0'
5443 && !strncmp (input_file_compiler
->suffix
+ 1, atom
,
5445 && input_file_compiler
->suffix
[end_atom
- atom
+ 1] == '\0');
5448 /* Subroutine of handle_braces. Returns true if a switch
5449 matching the atom bracketed by ATOM and END_ATOM appeared on the
5452 switch_matches (const char *atom
, const char *end_atom
, int starred
)
5455 int len
= end_atom
- atom
;
5456 int plen
= starred
? len
: -1;
5458 for (i
= 0; i
< n_switches
; i
++)
5459 if (!strncmp (switches
[i
].part1
, atom
, len
)
5460 && (starred
|| switches
[i
].part1
[len
] == '\0')
5461 && check_live_switch (i
, plen
))
5464 /* Check if a switch with separated form matching the atom.
5465 We check -D and -U switches. */
5466 else if (switches
[i
].args
!= 0)
5468 if ((*switches
[i
].part1
== 'D' || *switches
[i
].part1
== 'U')
5469 && *switches
[i
].part1
== atom
[0])
5471 if (!strncmp (switches
[i
].args
[0], &atom
[1], len
- 1)
5472 && (starred
|| (switches
[i
].part1
[1] == '\0'
5473 && switches
[i
].args
[0][len
- 1] == '\0'))
5474 && check_live_switch (i
, (starred
? 1 : -1)))
5482 /* Inline subroutine of handle_braces. Mark all of the switches which
5483 match ATOM (extends to END_ATOM; STARRED indicates whether there
5484 was a star after the atom) for later processing. */
5486 mark_matching_switches (const char *atom
, const char *end_atom
, int starred
)
5489 int len
= end_atom
- atom
;
5490 int plen
= starred
? len
: -1;
5492 for (i
= 0; i
< n_switches
; i
++)
5493 if (!strncmp (switches
[i
].part1
, atom
, len
)
5494 && (starred
|| switches
[i
].part1
[len
] == '\0')
5495 && check_live_switch (i
, plen
))
5496 switches
[i
].ordering
= 1;
5499 /* Inline subroutine of handle_braces. Process all the currently
5500 marked switches through give_switch, and clear the marks. */
5502 process_marked_switches (void)
5506 for (i
= 0; i
< n_switches
; i
++)
5507 if (switches
[i
].ordering
== 1)
5509 switches
[i
].ordering
= 0;
5514 /* Handle a %{ ... } construct. P points just inside the leading {.
5515 Returns a pointer one past the end of the brace block, or 0
5516 if we call do_spec_1 and that returns -1. */
5519 handle_braces (const char *p
)
5521 const char *atom
, *end_atom
;
5522 const char *d_atom
= NULL
, *d_end_atom
= NULL
;
5523 const char *orig
= p
;
5531 bool a_must_be_last
= false;
5532 bool ordered_set
= false;
5533 bool disjunct_set
= false;
5534 bool disj_matched
= false;
5535 bool disj_starred
= true;
5536 bool n_way_choice
= false;
5537 bool n_way_matched
= false;
5539 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
5546 /* Scan one "atom" (S in the description above of %{}, possibly
5547 with '!', '.', '@', ',', or '*' modifiers). */
5549 a_is_suffix
= false;
5550 a_is_starred
= false;
5551 a_is_negated
= false;
5552 a_is_spectype
= false;
5556 p
++, a_is_negated
= true;
5560 p
++, a_is_suffix
= true;
5562 p
++, a_is_spectype
= true;
5565 while (ISIDNUM(*p
) || *p
== '-' || *p
== '+' || *p
== '='
5566 || *p
== ',' || *p
== '.' || *p
== '@')
5571 p
++, a_is_starred
= 1;
5577 /* Substitute the switch(es) indicated by the current atom. */
5579 if (disjunct_set
|| n_way_choice
|| a_is_negated
|| a_is_suffix
5580 || a_is_spectype
|| atom
== end_atom
)
5583 mark_matching_switches (atom
, end_atom
, a_is_starred
);
5586 process_marked_switches ();
5590 /* Substitute some text if the current atom appears as a switch
5592 disjunct_set
= true;
5596 if (atom
== end_atom
)
5598 if (!n_way_choice
|| disj_matched
|| *p
== '|'
5599 || a_is_negated
|| a_is_suffix
|| a_is_spectype
5603 /* An empty term may appear as the last choice of an
5604 N-way choice set; it means "otherwise". */
5605 a_must_be_last
= true;
5606 disj_matched
= !n_way_matched
;
5607 disj_starred
= false;
5611 if ((a_is_suffix
|| a_is_spectype
) && a_is_starred
)
5615 disj_starred
= false;
5617 /* Don't bother testing this atom if we already have a
5619 if (!disj_matched
&& !n_way_matched
)
5622 a_matched
= input_suffix_matches (atom
, end_atom
);
5623 else if (a_is_spectype
)
5624 a_matched
= input_spec_matches (atom
, end_atom
);
5626 a_matched
= switch_matches (atom
, end_atom
, a_is_starred
);
5628 if (a_matched
!= a_is_negated
)
5630 disj_matched
= true;
5632 d_end_atom
= end_atom
;
5639 /* Found the body, that is, the text to substitute if the
5640 current disjunction matches. */
5641 p
= process_brace_body (p
+ 1, d_atom
, d_end_atom
, disj_starred
,
5642 disj_matched
&& !n_way_matched
);
5646 /* If we have an N-way choice, reset state for the next
5650 n_way_choice
= true;
5651 n_way_matched
|= disj_matched
;
5652 disj_matched
= false;
5653 disj_starred
= true;
5654 d_atom
= d_end_atom
= NULL
;
5663 while (*p
++ != '}');
5668 fatal_error ("braced spec %qs is invalid at %qc", orig
, *p
);
5673 /* Subroutine of handle_braces. Scan and process a brace substitution body
5674 (X in the description of %{} syntax). P points one past the colon;
5675 ATOM and END_ATOM bracket the first atom which was found to be true
5676 (present) in the current disjunction; STARRED indicates whether all
5677 the atoms in the current disjunction were starred (for syntax validation);
5678 MATCHED indicates whether the disjunction matched or not, and therefore
5679 whether or not the body is to be processed through do_spec_1 or just
5680 skipped. Returns a pointer to the closing } or ;, or 0 if do_spec_1
5684 process_brace_body (const char *p
, const char *atom
, const char *end_atom
,
5685 int starred
, int matched
)
5687 const char *body
, *end_body
;
5688 unsigned int nesting_level
;
5689 bool have_subst
= false;
5691 /* Locate the closing } or ;, honoring nested braces.
5692 Trim trailing whitespace. */
5701 if (!--nesting_level
)
5704 else if (*p
== ';' && nesting_level
== 1)
5706 else if (*p
== '%' && p
[1] == '*' && nesting_level
== 1)
5708 else if (*p
== '\0')
5714 while (end_body
[-1] == ' ' || end_body
[-1] == '\t')
5717 if (have_subst
&& !starred
)
5722 /* Copy the substitution body to permanent storage and execute it.
5723 If have_subst is false, this is a simple matter of running the
5724 body through do_spec_1... */
5725 char *string
= save_string (body
, end_body
- body
);
5728 if (do_spec_1 (string
, 0, NULL
) < 0)
5733 /* ... but if have_subst is true, we have to process the
5734 body once for each matching switch, with %* set to the
5735 variant part of the switch. */
5736 unsigned int hard_match_len
= end_atom
- atom
;
5739 for (i
= 0; i
< n_switches
; i
++)
5740 if (!strncmp (switches
[i
].part1
, atom
, hard_match_len
)
5741 && check_live_switch (i
, hard_match_len
))
5743 if (do_spec_1 (string
, 0,
5744 &switches
[i
].part1
[hard_match_len
]) < 0)
5746 /* Pass any arguments this switch has. */
5748 suffix_subst
= NULL
;
5756 fatal_error ("braced spec body %qs is invalid", body
);
5759 /* Return 0 iff switch number SWITCHNUM is obsoleted by a later switch
5760 on the command line. PREFIX_LENGTH is the length of XXX in an {XXX*}
5761 spec, or -1 if either exact match or %* is used.
5763 A -O switch is obsoleted by a later -O switch. A -f, -m, or -W switch
5764 whose value does not begin with "no-" is obsoleted by the same value
5765 with the "no-", similarly for a switch with the "no-" prefix. */
5768 check_live_switch (int switchnum
, int prefix_length
)
5770 const char *name
= switches
[switchnum
].part1
;
5773 /* If we already processed this switch and determined if it was
5774 live or not, return our past determination. */
5775 if (switches
[switchnum
].live_cond
!= 0)
5776 return ((switches
[switchnum
].live_cond
& SWITCH_LIVE
) != 0
5777 && (switches
[switchnum
].live_cond
& SWITCH_FALSE
) == 0
5778 && (switches
[switchnum
].live_cond
& SWITCH_IGNORE_PERMANENTLY
)
5781 /* In the common case of {<at-most-one-letter>*}, a negating
5782 switch would always match, so ignore that case. We will just
5783 send the conflicting switches to the compiler phase. */
5784 if (prefix_length
>= 0 && prefix_length
<= 1)
5787 /* Now search for duplicate in a manner that depends on the name. */
5791 for (i
= switchnum
+ 1; i
< n_switches
; i
++)
5792 if (switches
[i
].part1
[0] == 'O')
5794 switches
[switchnum
].validated
= 1;
5795 switches
[switchnum
].live_cond
= SWITCH_FALSE
;
5800 case 'W': case 'f': case 'm':
5801 if (! strncmp (name
+ 1, "no-", 3))
5803 /* We have Xno-YYY, search for XYYY. */
5804 for (i
= switchnum
+ 1; i
< n_switches
; i
++)
5805 if (switches
[i
].part1
[0] == name
[0]
5806 && ! strcmp (&switches
[i
].part1
[1], &name
[4]))
5808 switches
[switchnum
].validated
= 1;
5809 switches
[switchnum
].live_cond
= SWITCH_FALSE
;
5815 /* We have XYYY, search for Xno-YYY. */
5816 for (i
= switchnum
+ 1; i
< n_switches
; i
++)
5817 if (switches
[i
].part1
[0] == name
[0]
5818 && switches
[i
].part1
[1] == 'n'
5819 && switches
[i
].part1
[2] == 'o'
5820 && switches
[i
].part1
[3] == '-'
5821 && !strcmp (&switches
[i
].part1
[4], &name
[1]))
5823 switches
[switchnum
].validated
= 1;
5824 switches
[switchnum
].live_cond
= SWITCH_FALSE
;
5831 /* Otherwise the switch is live. */
5832 switches
[switchnum
].live_cond
|= SWITCH_LIVE
;
5836 /* Pass a switch to the current accumulating command
5837 in the same form that we received it.
5838 SWITCHNUM identifies the switch; it is an index into
5839 the vector of switches gcc received, which is `switches'.
5840 This cannot fail since it never finishes a command line.
5842 If OMIT_FIRST_WORD is nonzero, then we omit .part1 of the argument. */
5845 give_switch (int switchnum
, int omit_first_word
)
5847 if ((switches
[switchnum
].live_cond
& SWITCH_IGNORE
) != 0)
5850 if (!omit_first_word
)
5852 do_spec_1 ("-", 0, NULL
);
5853 do_spec_1 (switches
[switchnum
].part1
, 1, NULL
);
5856 if (switches
[switchnum
].args
!= 0)
5859 for (p
= switches
[switchnum
].args
; *p
; p
++)
5861 const char *arg
= *p
;
5863 do_spec_1 (" ", 0, NULL
);
5866 unsigned length
= strlen (arg
);
5869 while (length
-- && !IS_DIR_SEPARATOR (arg
[length
]))
5870 if (arg
[length
] == '.')
5872 (CONST_CAST(char *, arg
))[length
] = 0;
5876 do_spec_1 (arg
, 1, NULL
);
5878 (CONST_CAST(char *, arg
))[length
] = '.';
5879 do_spec_1 (suffix_subst
, 1, NULL
);
5882 do_spec_1 (arg
, 1, NULL
);
5886 do_spec_1 (" ", 0, NULL
);
5887 switches
[switchnum
].validated
= 1;
5890 /* Search for a file named NAME trying various prefixes including the
5891 user's -B prefix and some standard ones.
5892 Return the absolute file name found. If nothing is found, return NAME. */
5895 find_file (const char *name
)
5897 char *newname
= find_a_file (&startfile_prefixes
, name
, R_OK
, true);
5898 return newname
? newname
: name
;
5901 /* Determine whether a directory exists. If LINKER, return 0 for
5902 certain fixed names not needed by the linker. */
5905 is_directory (const char *path1
, bool linker
)
5912 /* Ensure the string ends with "/.". The resulting path will be a
5913 directory even if the given path is a symbolic link. */
5914 len1
= strlen (path1
);
5915 path
= (char *) alloca (3 + len1
);
5916 memcpy (path
, path1
, len1
);
5918 if (!IS_DIR_SEPARATOR (cp
[-1]))
5919 *cp
++ = DIR_SEPARATOR
;
5923 /* Exclude directories that the linker is known to search. */
5925 && IS_DIR_SEPARATOR (path
[0])
5927 && filename_ncmp (path
+ 1, "lib", 3) == 0)
5929 && filename_ncmp (path
+ 1, "usr", 3) == 0
5930 && IS_DIR_SEPARATOR (path
[4])
5931 && filename_ncmp (path
+ 5, "lib", 3) == 0)))
5934 return (stat (path
, &st
) >= 0 && S_ISDIR (st
.st_mode
));
5937 /* Set up the various global variables to indicate that we're processing
5938 the input file named FILENAME. */
5941 set_input (const char *filename
)
5945 gcc_input_filename
= filename
;
5946 input_filename_length
= strlen (gcc_input_filename
);
5947 input_basename
= lbasename (gcc_input_filename
);
5949 /* Find a suffix starting with the last period,
5950 and set basename_length to exclude that suffix. */
5951 basename_length
= strlen (input_basename
);
5952 suffixed_basename_length
= basename_length
;
5953 p
= input_basename
+ basename_length
;
5954 while (p
!= input_basename
&& *p
!= '.')
5956 if (*p
== '.' && p
!= input_basename
)
5958 basename_length
= p
- input_basename
;
5959 input_suffix
= p
+ 1;
5964 /* If a spec for 'g', 'u', or 'U' is seen with -save-temps then
5965 we will need to do a stat on the gcc_input_filename. The
5966 INPUT_STAT_SET signals that the stat is needed. */
5970 /* On fatal signals, delete all the temporary files. */
5973 fatal_signal (int signum
)
5975 signal (signum
, SIG_DFL
);
5976 delete_failure_queue ();
5977 delete_temp_files ();
5978 /* Get the same signal again, this time not handled,
5979 so its normal effect occurs. */
5980 kill (getpid (), signum
);
5983 /* Compare the contents of the two files named CMPFILE[0] and
5984 CMPFILE[1]. Return zero if they're identical, nonzero
5988 compare_files (char *cmpfile
[])
5991 FILE *temp
[2] = { NULL
, NULL
};
5997 void *map
[2] = { NULL
, NULL
};
5999 for (i
= 0; i
< 2; i
++)
6003 if (stat (cmpfile
[i
], &st
) < 0 || !S_ISREG (st
.st_mode
))
6005 error ("%s: could not determine length of compare-debug file %s",
6006 gcc_input_filename
, cmpfile
[i
]);
6011 length
[i
] = st
.st_size
;
6014 if (!ret
&& length
[0] != length
[1])
6016 error ("%s: -fcompare-debug failure (length)", gcc_input_filename
);
6021 for (i
= 0; i
< 2; i
++)
6023 int fd
= open (cmpfile
[i
], O_RDONLY
);
6026 error ("%s: could not open compare-debug file %s",
6027 gcc_input_filename
, cmpfile
[i
]);
6032 map
[i
] = mmap (NULL
, length
[i
], PROT_READ
, MAP_PRIVATE
, fd
, 0);
6035 if (map
[i
] == (void *) MAP_FAILED
)
6044 if (memcmp (map
[0], map
[1], length
[0]) != 0)
6046 error ("%s: -fcompare-debug failure", gcc_input_filename
);
6051 for (i
= 0; i
< 2; i
++)
6053 munmap ((caddr_t
) map
[i
], length
[i
]);
6062 for (i
= 0; i
< 2; i
++)
6064 temp
[i
] = fopen (cmpfile
[i
], "r");
6067 error ("%s: could not open compare-debug file %s",
6068 gcc_input_filename
, cmpfile
[i
]);
6074 if (!ret
&& temp
[0] && temp
[1])
6078 c0
= fgetc (temp
[0]);
6079 c1
= fgetc (temp
[1]);
6083 error ("%s: -fcompare-debug failure",
6084 gcc_input_filename
);
6093 for (i
= 1; i
>= 0; i
--)
6102 extern int main (int, char **);
6105 main (int argc
, char **argv
)
6109 int linker_was_run
= 0;
6110 int lang_n_infiles
= 0;
6111 int num_linker_inputs
= 0;
6112 char *explicit_link_files
;
6114 char *lto_wrapper_file
;
6116 struct user_specs
*uptr
;
6117 char **old_argv
= argv
;
6118 struct cl_decoded_option
*decoded_options
;
6119 unsigned int decoded_options_count
;
6121 /* Initialize here, not in definition. The IRIX 6 O32 cc sometimes chokes
6122 on ?: in file-scope variable initializations. */
6123 asm_debug
= ASM_DEBUG_SPEC
;
6125 p
= argv
[0] + strlen (argv
[0]);
6126 while (p
!= argv
[0] && !IS_DIR_SEPARATOR (p
[-1]))
6130 xmalloc_set_program_name (progname
);
6132 expandargv (&argc
, &argv
);
6134 /* Determine if any expansions were made. */
6135 if (argv
!= old_argv
)
6136 at_file_supplied
= true;
6138 /* Register the language-independent parameters. */
6139 global_init_params ();
6142 init_options_struct (&global_options
, &global_options_set
);
6144 decode_cmdline_options_to_array (argc
, CONST_CAST2 (const char **, char **,
6147 &decoded_options
, &decoded_options_count
);
6149 #ifdef GCC_DRIVER_HOST_INITIALIZATION
6150 /* Perform host dependent initialization when needed. */
6151 GCC_DRIVER_HOST_INITIALIZATION
;
6154 /* Unlock the stdio streams. */
6155 unlock_std_streams ();
6157 gcc_init_libintl ();
6159 diagnostic_initialize (global_dc
, 0);
6160 if (atexit (delete_temp_files
) != 0)
6161 fatal_error ("atexit failed");
6163 if (signal (SIGINT
, SIG_IGN
) != SIG_IGN
)
6164 signal (SIGINT
, fatal_signal
);
6166 if (signal (SIGHUP
, SIG_IGN
) != SIG_IGN
)
6167 signal (SIGHUP
, fatal_signal
);
6169 if (signal (SIGTERM
, SIG_IGN
) != SIG_IGN
)
6170 signal (SIGTERM
, fatal_signal
);
6172 if (signal (SIGPIPE
, SIG_IGN
) != SIG_IGN
)
6173 signal (SIGPIPE
, fatal_signal
);
6176 /* We *MUST* set SIGCHLD to SIG_DFL so that the wait4() call will
6177 receive the signal. A different setting is inheritable */
6178 signal (SIGCHLD
, SIG_DFL
);
6181 /* Parsing and gimplification sometimes need quite large stack.
6182 Increase stack size limits if possible. */
6183 stack_limit_increase (64 * 1024 * 1024);
6185 /* Allocate the argument vector. */
6188 obstack_init (&obstack
);
6190 /* Build multilib_select, et. al from the separate lines that make up each
6191 multilib selection. */
6193 const char *const *q
= multilib_raw
;
6196 obstack_init (&multilib_obstack
);
6197 while ((p
= *q
++) != (char *) 0)
6198 obstack_grow (&multilib_obstack
, p
, strlen (p
));
6200 obstack_1grow (&multilib_obstack
, 0);
6201 multilib_select
= XOBFINISH (&multilib_obstack
, const char *);
6203 q
= multilib_matches_raw
;
6204 while ((p
= *q
++) != (char *) 0)
6205 obstack_grow (&multilib_obstack
, p
, strlen (p
));
6207 obstack_1grow (&multilib_obstack
, 0);
6208 multilib_matches
= XOBFINISH (&multilib_obstack
, const char *);
6210 q
= multilib_exclusions_raw
;
6211 while ((p
= *q
++) != (char *) 0)
6212 obstack_grow (&multilib_obstack
, p
, strlen (p
));
6214 obstack_1grow (&multilib_obstack
, 0);
6215 multilib_exclusions
= XOBFINISH (&multilib_obstack
, const char *);
6218 for (i
= 0; i
< ARRAY_SIZE (multilib_defaults_raw
); i
++)
6221 obstack_1grow (&multilib_obstack
, ' ');
6222 obstack_grow (&multilib_obstack
,
6223 multilib_defaults_raw
[i
],
6224 strlen (multilib_defaults_raw
[i
]));
6228 obstack_1grow (&multilib_obstack
, 0);
6229 multilib_defaults
= XOBFINISH (&multilib_obstack
, const char *);
6232 #ifdef INIT_ENVIRONMENT
6233 /* Set up any other necessary machine specific environment variables. */
6234 xputenv (INIT_ENVIRONMENT
);
6237 /* Make a table of what switches there are (switches, n_switches).
6238 Make a table of specified input files (infiles, n_infiles).
6239 Decode switches that are handled locally. */
6241 process_command (decoded_options_count
, decoded_options
);
6243 /* Initialize the vector of specs to just the default.
6244 This means one element containing 0s, as a terminator. */
6246 compilers
= XNEWVAR (struct compiler
, sizeof default_compilers
);
6247 memcpy (compilers
, default_compilers
, sizeof default_compilers
);
6248 n_compilers
= n_default_compilers
;
6250 /* Read specs from a file if there is one. */
6252 machine_suffix
= concat (spec_machine
, dir_separator_str
,
6253 spec_version
, dir_separator_str
, NULL
);
6254 just_machine_suffix
= concat (spec_machine
, dir_separator_str
, NULL
);
6256 specs_file
= find_a_file (&startfile_prefixes
, "specs", R_OK
, true);
6257 /* Read the specs file unless it is a default one. */
6258 if (specs_file
!= 0 && strcmp (specs_file
, "specs"))
6259 read_specs (specs_file
, TRUE
);
6263 /* We need to check standard_exec_prefix/just_machine_suffix/specs
6264 for any override of as, ld and libraries. */
6265 specs_file
= (char *) alloca (strlen (standard_exec_prefix
)
6266 + strlen (just_machine_suffix
) + sizeof ("specs"));
6268 strcpy (specs_file
, standard_exec_prefix
);
6269 strcat (specs_file
, just_machine_suffix
);
6270 strcat (specs_file
, "specs");
6271 if (access (specs_file
, R_OK
) == 0)
6272 read_specs (specs_file
, TRUE
);
6274 /* Process any configure-time defaults specified for the command line
6275 options, via OPTION_DEFAULT_SPECS. */
6276 for (i
= 0; i
< ARRAY_SIZE (option_default_specs
); i
++)
6277 do_option_spec (option_default_specs
[i
].name
,
6278 option_default_specs
[i
].spec
);
6280 /* Process DRIVER_SELF_SPECS, adding any new options to the end
6281 of the command line. */
6283 for (i
= 0; i
< ARRAY_SIZE (driver_self_specs
); i
++)
6284 do_self_spec (driver_self_specs
[i
]);
6286 /* If not cross-compiling, look for executables in the standard
6288 if (*cross_compile
== '0')
6290 if (*md_exec_prefix
)
6292 add_prefix (&exec_prefixes
, md_exec_prefix
, "GCC",
6293 PREFIX_PRIORITY_LAST
, 0, 0);
6297 /* Process sysroot_suffix_spec. */
6298 if (*sysroot_suffix_spec
!= 0
6299 && do_spec_2 (sysroot_suffix_spec
) == 0)
6301 if (VEC_length (const_char_p
, argbuf
) > 1)
6302 error ("spec failure: more than one arg to SYSROOT_SUFFIX_SPEC");
6303 else if (VEC_length (const_char_p
, argbuf
) == 1)
6304 target_sysroot_suffix
= xstrdup (VEC_last (const_char_p
, argbuf
));
6307 #ifdef HAVE_LD_SYSROOT
6308 /* Pass the --sysroot option to the linker, if it supports that. If
6309 there is a sysroot_suffix_spec, it has already been processed by
6310 this point, so target_system_root really is the system root we
6312 if (target_system_root
)
6314 obstack_grow (&obstack
, "%(sysroot_spec) ", strlen ("%(sysroot_spec) "));
6315 obstack_grow0 (&obstack
, link_spec
, strlen (link_spec
));
6316 set_spec ("link", XOBFINISH (&obstack
, const char *));
6320 /* Process sysroot_hdrs_suffix_spec. */
6321 if (*sysroot_hdrs_suffix_spec
!= 0
6322 && do_spec_2 (sysroot_hdrs_suffix_spec
) == 0)
6324 if (VEC_length (const_char_p
, argbuf
) > 1)
6325 error ("spec failure: more than one arg to SYSROOT_HEADERS_SUFFIX_SPEC");
6326 else if (VEC_length (const_char_p
, argbuf
) == 1)
6327 target_sysroot_hdrs_suffix
= xstrdup (VEC_last (const_char_p
, argbuf
));
6330 /* Look for startfiles in the standard places. */
6331 if (*startfile_prefix_spec
!= 0
6332 && do_spec_2 (startfile_prefix_spec
) == 0
6333 && do_spec_1 (" ", 0, NULL
) == 0)
6337 FOR_EACH_VEC_ELT (const_char_p
, argbuf
, ndx
, arg
)
6338 add_sysrooted_prefix (&startfile_prefixes
, arg
, "BINUTILS",
6339 PREFIX_PRIORITY_LAST
, 0, 1);
6341 /* We should eventually get rid of all these and stick to
6342 startfile_prefix_spec exclusively. */
6343 else if (*cross_compile
== '0' || target_system_root
)
6345 if (*md_startfile_prefix
)
6346 add_sysrooted_prefix (&startfile_prefixes
, md_startfile_prefix
,
6347 "GCC", PREFIX_PRIORITY_LAST
, 0, 1);
6349 if (*md_startfile_prefix_1
)
6350 add_sysrooted_prefix (&startfile_prefixes
, md_startfile_prefix_1
,
6351 "GCC", PREFIX_PRIORITY_LAST
, 0, 1);
6353 /* If standard_startfile_prefix is relative, base it on
6354 standard_exec_prefix. This lets us move the installed tree
6355 as a unit. If GCC_EXEC_PREFIX is defined, base
6356 standard_startfile_prefix on that as well.
6358 If the prefix is relative, only search it for native compilers;
6359 otherwise we will search a directory containing host libraries. */
6360 if (IS_ABSOLUTE_PATH (standard_startfile_prefix
))
6361 add_sysrooted_prefix (&startfile_prefixes
,
6362 standard_startfile_prefix
, "BINUTILS",
6363 PREFIX_PRIORITY_LAST
, 0, 1);
6364 else if (*cross_compile
== '0')
6366 add_prefix (&startfile_prefixes
,
6367 concat (gcc_exec_prefix
6368 ? gcc_exec_prefix
: standard_exec_prefix
,
6370 standard_startfile_prefix
, NULL
),
6371 NULL
, PREFIX_PRIORITY_LAST
, 0, 1);
6374 /* Sysrooted prefixes are relocated because target_system_root is
6375 also relocated by gcc_exec_prefix. */
6376 if (*standard_startfile_prefix_1
)
6377 add_sysrooted_prefix (&startfile_prefixes
,
6378 standard_startfile_prefix_1
, "BINUTILS",
6379 PREFIX_PRIORITY_LAST
, 0, 1);
6380 if (*standard_startfile_prefix_2
)
6381 add_sysrooted_prefix (&startfile_prefixes
,
6382 standard_startfile_prefix_2
, "BINUTILS",
6383 PREFIX_PRIORITY_LAST
, 0, 1);
6386 /* Process any user specified specs in the order given on the command
6388 for (uptr
= user_specs_head
; uptr
; uptr
= uptr
->next
)
6390 char *filename
= find_a_file (&startfile_prefixes
, uptr
->filename
,
6392 read_specs (filename
? filename
: uptr
->filename
, FALSE
);
6395 /* Process any user self specs. */
6397 struct spec_list
*sl
;
6398 for (sl
= specs
; sl
; sl
= sl
->next
)
6399 if (sl
->name_len
== sizeof "self_spec" - 1
6400 && !strcmp (sl
->name
, "self_spec"))
6401 do_self_spec (*sl
->ptr_spec
);
6406 enum save_temps save
;
6408 if (!compare_debug_second
)
6410 n_switches_debug_check
[1] = n_switches
;
6411 n_switches_alloc_debug_check
[1] = n_switches_alloc
;
6412 switches_debug_check
[1] = XDUPVEC (struct switchstr
, switches
,
6415 do_self_spec ("%:compare-debug-self-opt()");
6416 n_switches_debug_check
[0] = n_switches
;
6417 n_switches_alloc_debug_check
[0] = n_switches_alloc
;
6418 switches_debug_check
[0] = switches
;
6420 n_switches
= n_switches_debug_check
[1];
6421 n_switches_alloc
= n_switches_alloc_debug_check
[1];
6422 switches
= switches_debug_check
[1];
6425 /* Avoid crash when computing %j in this early. */
6426 save
= save_temps_flag
;
6427 save_temps_flag
= SAVE_TEMPS_NONE
;
6429 compare_debug
= -compare_debug
;
6430 do_self_spec ("%:compare-debug-self-opt()");
6432 save_temps_flag
= save
;
6434 if (!compare_debug_second
)
6436 n_switches_debug_check
[1] = n_switches
;
6437 n_switches_alloc_debug_check
[1] = n_switches_alloc
;
6438 switches_debug_check
[1] = switches
;
6439 compare_debug
= -compare_debug
;
6440 n_switches
= n_switches_debug_check
[0];
6441 n_switches_alloc
= n_switches_debug_check
[0];
6442 switches
= switches_debug_check
[0];
6447 /* If we have a GCC_EXEC_PREFIX envvar, modify it for cpp's sake. */
6448 if (gcc_exec_prefix
)
6449 gcc_exec_prefix
= concat (gcc_exec_prefix
, spec_machine
, dir_separator_str
,
6450 spec_version
, dir_separator_str
, NULL
);
6452 /* Now we have the specs.
6453 Set the `valid' bits for switches that match anything in any spec. */
6455 validate_all_switches ();
6457 /* Now that we have the switches and the specs, set
6458 the subdirectory based on the options. */
6459 set_multilib_dir ();
6461 /* Set up to remember the pathname of gcc and any options
6462 needed for collect. We use argv[0] instead of progname because
6463 we need the complete pathname. */
6464 obstack_init (&collect_obstack
);
6465 obstack_grow (&collect_obstack
, "COLLECT_GCC=", sizeof ("COLLECT_GCC=") - 1);
6466 obstack_grow (&collect_obstack
, argv
[0], strlen (argv
[0]) + 1);
6467 xputenv (XOBFINISH (&collect_obstack
, char *));
6469 /* Set up to remember the pathname of the lto wrapper. */
6472 lto_wrapper_file
= NULL
;
6474 lto_wrapper_file
= find_a_file (&exec_prefixes
, "lto-wrapper",
6476 if (lto_wrapper_file
)
6478 lto_wrapper_spec
= lto_wrapper_file
;
6479 obstack_init (&collect_obstack
);
6480 obstack_grow (&collect_obstack
, "COLLECT_LTO_WRAPPER=",
6481 sizeof ("COLLECT_LTO_WRAPPER=") - 1);
6482 obstack_grow (&collect_obstack
, lto_wrapper_spec
,
6483 strlen (lto_wrapper_spec
) + 1);
6484 xputenv (XOBFINISH (&collect_obstack
, char *));
6487 /* Warn about any switches that no pass was interested in. */
6489 for (i
= 0; (int) i
< n_switches
; i
++)
6490 if (! switches
[i
].validated
)
6491 error ("unrecognized option %<-%s%>", switches
[i
].part1
);
6493 /* Obey some of the options. */
6495 if (print_search_dirs
)
6497 printf (_("install: %s%s\n"),
6498 gcc_exec_prefix
? gcc_exec_prefix
: standard_exec_prefix
,
6499 gcc_exec_prefix
? "" : machine_suffix
);
6500 printf (_("programs: %s\n"),
6501 build_search_list (&exec_prefixes
, "", false, false));
6502 printf (_("libraries: %s\n"),
6503 build_search_list (&startfile_prefixes
, "", false, true));
6507 if (print_file_name
)
6509 printf ("%s\n", find_file (print_file_name
));
6513 if (print_prog_name
)
6515 char *newname
= find_a_file (&exec_prefixes
, print_prog_name
, X_OK
, 0);
6516 printf ("%s\n", (newname
? newname
: print_prog_name
));
6520 if (print_multi_lib
)
6522 print_multilib_info ();
6526 if (print_multi_directory
)
6528 if (multilib_dir
== NULL
)
6531 printf ("%s\n", multilib_dir
);
6537 if (target_system_root
)
6539 if (target_sysroot_suffix
)
6540 printf ("%s%s\n", target_system_root
, target_sysroot_suffix
);
6542 printf ("%s\n", target_system_root
);
6547 if (print_multi_os_directory
)
6549 if (multilib_os_dir
== NULL
)
6552 printf ("%s\n", multilib_os_dir
);
6556 if (print_sysroot_headers_suffix
)
6558 if (*sysroot_hdrs_suffix_spec
)
6560 printf("%s\n", (target_sysroot_hdrs_suffix
6561 ? target_sysroot_hdrs_suffix
6566 /* The error status indicates that only one set of fixed
6567 headers should be built. */
6568 fatal_error ("not configured with sysroot headers suffix");
6571 if (print_help_list
)
6577 printf (_("\nFor bug reporting instructions, please see:\n"));
6578 printf ("%s.\n", bug_report_url
);
6583 /* We do not exit here. Instead we have created a fake input file
6584 called 'help-dummy' which needs to be compiled, and we pass this
6585 on the various sub-processes, along with the --help switch.
6586 Ensure their output appears after ours. */
6587 fputc ('\n', stdout
);
6593 printf (_("%s %s%s\n"), progname
, pkgversion_string
,
6595 printf ("Copyright %s 2012 Free Software Foundation, Inc.\n",
6597 fputs (_("This is free software; see the source for copying conditions. There is NO\n\
6598 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\n"),
6603 /* We do not exit here. We use the same mechanism of --help to print
6604 the version of the sub-processes. */
6605 fputc ('\n', stdout
);
6614 fnotice (stderr
, "Target: %s\n", spec_machine
);
6615 fnotice (stderr
, "Configured with: %s\n", configuration_arguments
);
6617 #ifdef THREAD_MODEL_SPEC
6618 /* We could have defined THREAD_MODEL_SPEC to "%*" by default,
6619 but there's no point in doing all this processing just to get
6620 thread_model back. */
6621 obstack_init (&obstack
);
6622 do_spec_1 (THREAD_MODEL_SPEC
, 0, thread_model
);
6623 obstack_1grow (&obstack
, '\0');
6624 thrmod
= XOBFINISH (&obstack
, const char *);
6626 thrmod
= thread_model
;
6629 fnotice (stderr
, "Thread model: %s\n", thrmod
);
6631 /* compiler_version is truncated at the first space when initialized
6632 from version string, so truncate version_string at the first space
6633 before comparing. */
6634 for (n
= 0; version_string
[n
]; n
++)
6635 if (version_string
[n
] == ' ')
6638 if (! strncmp (version_string
, compiler_version
, n
)
6639 && compiler_version
[n
] == 0)
6640 fnotice (stderr
, "gcc version %s %s\n", version_string
,
6643 fnotice (stderr
, "gcc driver version %s %sexecuting gcc version %s\n",
6644 version_string
, pkgversion_string
, compiler_version
);
6650 if (n_infiles
== added_libraries
)
6651 fatal_error ("no input files");
6656 /* Make a place to record the compiler output file names
6657 that correspond to the input files. */
6660 i
+= lang_specific_extra_outfiles
;
6661 outfiles
= XCNEWVEC (const char *, i
);
6663 /* Record which files were specified explicitly as link input. */
6665 explicit_link_files
= XCNEWVEC (char, n_infiles
);
6667 combine_inputs
= have_o
|| flag_wpa
;
6669 for (i
= 0; (int) i
< n_infiles
; i
++)
6671 const char *name
= infiles
[i
].name
;
6672 struct compiler
*compiler
= lookup_compiler (name
,
6674 infiles
[i
].language
);
6676 if (compiler
&& !(compiler
->combinable
))
6677 combine_inputs
= false;
6679 if (lang_n_infiles
> 0 && compiler
!= input_file_compiler
6680 && infiles
[i
].language
&& infiles
[i
].language
[0] != '*')
6681 infiles
[i
].incompiler
= compiler
;
6685 input_file_compiler
= compiler
;
6686 infiles
[i
].incompiler
= compiler
;
6690 /* Since there is no compiler for this input file, assume it is a
6692 explicit_link_files
[i
] = 1;
6693 infiles
[i
].incompiler
= NULL
;
6695 infiles
[i
].compiled
= false;
6696 infiles
[i
].preprocessed
= false;
6699 if (!combine_inputs
&& have_c
&& have_o
&& lang_n_infiles
> 1)
6700 fatal_error ("cannot specify -o with -c, -S or -E with multiple files");
6702 for (i
= 0; (int) i
< n_infiles
; i
++)
6704 int this_file_error
= 0;
6706 /* Tell do_spec what to substitute for %i. */
6708 input_file_number
= i
;
6709 set_input (infiles
[i
].name
);
6711 if (infiles
[i
].compiled
)
6714 /* Use the same thing in %o, unless cp->spec says otherwise. */
6716 outfiles
[i
] = gcc_input_filename
;
6718 /* Figure out which compiler from the file's suffix. */
6721 = lookup_compiler (infiles
[i
].name
, input_filename_length
,
6722 infiles
[i
].language
);
6724 if (input_file_compiler
)
6726 /* Ok, we found an applicable compiler. Run its spec. */
6728 if (input_file_compiler
->spec
[0] == '#')
6730 error ("%s: %s compiler not installed on this system",
6731 gcc_input_filename
, &input_file_compiler
->spec
[1]);
6732 this_file_error
= 1;
6738 free (debug_check_temp_file
[0]);
6739 debug_check_temp_file
[0] = NULL
;
6741 free (debug_check_temp_file
[1]);
6742 debug_check_temp_file
[1] = NULL
;
6745 value
= do_spec (input_file_compiler
->spec
);
6746 infiles
[i
].compiled
= true;
6748 this_file_error
= 1;
6749 else if (compare_debug
&& debug_check_temp_file
[0])
6752 inform (0, "recompiling with -fcompare-debug");
6754 compare_debug
= -compare_debug
;
6755 n_switches
= n_switches_debug_check
[1];
6756 n_switches_alloc
= n_switches_alloc_debug_check
[1];
6757 switches
= switches_debug_check
[1];
6759 value
= do_spec (input_file_compiler
->spec
);
6761 compare_debug
= -compare_debug
;
6762 n_switches
= n_switches_debug_check
[0];
6763 n_switches_alloc
= n_switches_alloc_debug_check
[0];
6764 switches
= switches_debug_check
[0];
6768 error ("during -fcompare-debug recompilation");
6769 this_file_error
= 1;
6772 gcc_assert (debug_check_temp_file
[1]
6773 && filename_cmp (debug_check_temp_file
[0],
6774 debug_check_temp_file
[1]));
6777 inform (0, "comparing final insns dumps");
6779 if (compare_files (debug_check_temp_file
))
6780 this_file_error
= 1;
6785 free (debug_check_temp_file
[0]);
6786 debug_check_temp_file
[0] = NULL
;
6788 free (debug_check_temp_file
[1]);
6789 debug_check_temp_file
[1] = NULL
;
6794 /* If this file's name does not contain a recognized suffix,
6795 record it as explicit linker input. */
6798 explicit_link_files
[i
] = 1;
6800 /* Clear the delete-on-failure queue, deleting the files in it
6801 if this compilation failed. */
6803 if (this_file_error
)
6805 delete_failure_queue ();
6808 /* If this compilation succeeded, don't delete those files later. */
6809 clear_failure_queue ();
6812 /* Reset the input file name to the first compile/object file name, for use
6813 with %b in LINK_SPEC. We use the first input file that we can find
6814 a compiler to compile it instead of using infiles.language since for
6815 languages other than C we use aliases that we then lookup later. */
6820 for (i
= 0; i
< n_infiles
; i
++)
6821 if (infiles
[i
].incompiler
6822 || (infiles
[i
].language
&& infiles
[i
].language
[0] != '*'))
6824 set_input (infiles
[i
].name
);
6831 /* Make sure INPUT_FILE_NUMBER points to first available open
6833 input_file_number
= n_infiles
;
6834 if (lang_specific_pre_link ())
6838 /* Determine if there are any linker input files. */
6839 num_linker_inputs
= 0;
6840 for (i
= 0; (int) i
< n_infiles
; i
++)
6841 if (explicit_link_files
[i
] || outfiles
[i
] != NULL
)
6842 num_linker_inputs
++;
6844 /* Run ld to link all the compiler output files. */
6846 if (num_linker_inputs
> 0 && !seen_error () && print_subprocess_help
< 2)
6848 int tmp
= execution_count
;
6852 #if HAVE_LTO_PLUGIN > 0
6853 #if HAVE_LTO_PLUGIN == 2
6854 const char *fno_use_linker_plugin
= "fno-use-linker-plugin";
6856 const char *fuse_linker_plugin
= "fuse-linker-plugin";
6860 /* We'll use ld if we can't find collect2. */
6861 if (! strcmp (linker_name_spec
, "collect2"))
6863 char *s
= find_a_file (&exec_prefixes
, "collect2", X_OK
, false);
6865 linker_name_spec
= "ld";
6868 #if HAVE_LTO_PLUGIN > 0
6869 #if HAVE_LTO_PLUGIN == 2
6870 if (!switch_matches (fno_use_linker_plugin
,
6871 fno_use_linker_plugin
6872 + strlen (fno_use_linker_plugin
), 0))
6874 if (switch_matches (fuse_linker_plugin
,
6876 + strlen (fuse_linker_plugin
), 0))
6879 linker_plugin_file_spec
= find_a_file (&exec_prefixes
,
6880 LTOPLUGINSONAME
, R_OK
,
6882 if (!linker_plugin_file_spec
)
6883 fatal_error ("-fuse-linker-plugin, but %s not found",
6887 lto_gcc_spec
= argv
[0];
6890 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
6892 putenv_from_prefixes (&exec_prefixes
, "COMPILER_PATH", false);
6893 putenv_from_prefixes (&startfile_prefixes
, LIBRARY_PATH_ENV
, true);
6895 if (print_subprocess_help
== 1)
6897 printf (_("\nLinker options\n==============\n\n"));
6898 printf (_("Use \"-Wl,OPTION\" to pass \"OPTION\""
6899 " to the linker.\n\n"));
6902 value
= do_spec (link_command_spec
);
6905 linker_was_run
= (tmp
!= execution_count
);
6908 /* If options said don't run linker,
6909 complain about input files to be given to the linker. */
6911 if (! linker_was_run
&& !seen_error ())
6912 for (i
= 0; (int) i
< n_infiles
; i
++)
6913 if (explicit_link_files
[i
]
6914 && !(infiles
[i
].language
&& infiles
[i
].language
[0] == '*'))
6915 warning (0, "%s: linker input file unused because linking not done",
6918 /* Delete some or all of the temporary files we made. */
6921 delete_failure_queue ();
6922 delete_temp_files ();
6924 if (print_help_list
)
6926 printf (("\nFor bug reporting instructions, please see:\n"));
6927 printf ("%s\n", bug_report_url
);
6931 return (signal_count
!= 0 ? 2
6932 : seen_error () ? (pass_exit_codes
? greatest_status
: 1)
6936 /* Find the proper compilation spec for the file name NAME,
6937 whose length is LENGTH. LANGUAGE is the specified language,
6938 or 0 if this file is to be passed to the linker. */
6940 static struct compiler
*
6941 lookup_compiler (const char *name
, size_t length
, const char *language
)
6943 struct compiler
*cp
;
6945 /* If this was specified by the user to be a linker input, indicate that. */
6946 if (language
!= 0 && language
[0] == '*')
6949 /* Otherwise, look for the language, if one is spec'd. */
6952 for (cp
= compilers
+ n_compilers
- 1; cp
>= compilers
; cp
--)
6953 if (cp
->suffix
[0] == '@' && !strcmp (cp
->suffix
+ 1, language
))
6956 error ("language %s not recognized", language
);
6960 /* Look for a suffix. */
6961 for (cp
= compilers
+ n_compilers
- 1; cp
>= compilers
; cp
--)
6963 if (/* The suffix `-' matches only the file name `-'. */
6964 (!strcmp (cp
->suffix
, "-") && !strcmp (name
, "-"))
6965 || (strlen (cp
->suffix
) < length
6966 /* See if the suffix matches the end of NAME. */
6967 && !strcmp (cp
->suffix
,
6968 name
+ length
- strlen (cp
->suffix
))
6973 #if defined (OS2) ||defined (HAVE_DOS_BASED_FILE_SYSTEM)
6974 /* Look again, but case-insensitively this time. */
6976 for (cp
= compilers
+ n_compilers
- 1; cp
>= compilers
; cp
--)
6978 if (/* The suffix `-' matches only the file name `-'. */
6979 (!strcmp (cp
->suffix
, "-") && !strcmp (name
, "-"))
6980 || (strlen (cp
->suffix
) < length
6981 /* See if the suffix matches the end of NAME. */
6982 && ((!strcmp (cp
->suffix
,
6983 name
+ length
- strlen (cp
->suffix
))
6984 || !strpbrk (cp
->suffix
, "ABCDEFGHIJKLMNOPQRSTUVWXYZ"))
6985 && !strcasecmp (cp
->suffix
,
6986 name
+ length
- strlen (cp
->suffix
)))
6992 if (cp
>= compilers
)
6994 if (cp
->spec
[0] != '@')
6995 /* A non-alias entry: return it. */
6998 /* An alias entry maps a suffix to a language.
6999 Search for the language; pass 0 for NAME and LENGTH
7000 to avoid infinite recursion if language not found. */
7001 return lookup_compiler (NULL
, 0, cp
->spec
+ 1);
7007 save_string (const char *s
, int len
)
7009 char *result
= XNEWVEC (char, len
+ 1);
7011 memcpy (result
, s
, len
);
7017 pfatal_with_name (const char *name
)
7019 perror_with_name (name
);
7020 delete_temp_files ();
7025 perror_with_name (const char *name
)
7027 error ("%s: %m", name
);
7031 validate_switches_from_spec (const char *spec
)
7033 const char *p
= spec
;
7036 if (c
== '%' && (*p
== '{' || *p
== '<' || (*p
== 'W' && *++p
== '{')))
7037 /* We have a switch spec. */
7038 p
= validate_switches (p
+ 1);
7042 validate_all_switches (void)
7044 struct compiler
*comp
;
7045 struct spec_list
*spec
;
7047 for (comp
= compilers
; comp
->spec
; comp
++)
7048 validate_switches_from_spec (comp
->spec
);
7050 /* Look through the linked list of specs read from the specs file. */
7051 for (spec
= specs
; spec
; spec
= spec
->next
)
7052 validate_switches_from_spec (*spec
->ptr_spec
);
7054 validate_switches_from_spec (link_command_spec
);
7057 /* Look at the switch-name that comes after START
7058 and mark as valid all supplied switches that match it. */
7061 validate_switches (const char *start
)
7063 const char *p
= start
;
7067 bool suffix
= false;
7068 bool starred
= false;
7070 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
7079 if (*p
== '.' || *p
== ',')
7083 while (ISIDNUM (*p
) || *p
== '-' || *p
== '+' || *p
== '='
7084 || *p
== ',' || *p
== '.' || *p
== '@')
7089 starred
= true, p
++;
7095 /* Mark all matching switches as valid. */
7096 for (i
= 0; i
< n_switches
; i
++)
7097 if (!strncmp (switches
[i
].part1
, atom
, len
)
7098 && (starred
|| switches
[i
].part1
[len
] == 0))
7099 switches
[i
].validated
= 1;
7103 if (*p
&& (p
[-1] == '|' || p
[-1] == '&'))
7106 if (*p
&& p
[-1] == ':')
7108 while (*p
&& *p
!= ';' && *p
!= '}')
7113 if (*p
== '{' || *p
== '<')
7114 p
= validate_switches (p
+1);
7115 else if (p
[0] == 'W' && p
[1] == '{')
7116 p
= validate_switches (p
+2);
7123 if (*p
&& p
[-1] == ';')
7137 static struct mdswitchstr
*mdswitches
;
7138 static int n_mdswitches
;
7140 /* Check whether a particular argument was used. The first time we
7141 canonicalize the switches to keep only the ones we care about. */
7144 used_arg (const char *p
, int len
)
7149 const char *replace
;
7154 static struct mswitchstr
*mswitches
;
7155 static int n_mswitches
;
7160 struct mswitchstr
*matches
;
7164 /* Break multilib_matches into the component strings of string
7165 and replacement string. */
7166 for (q
= multilib_matches
; *q
!= '\0'; q
++)
7171 = (struct mswitchstr
*) alloca ((sizeof (struct mswitchstr
)) * cnt
);
7173 q
= multilib_matches
;
7182 fatal_error ("multilib spec %qs is invalid",
7187 matches
[i
].len
= q
- matches
[i
].str
;
7189 matches
[i
].replace
= ++q
;
7190 while (*q
!= ';' && *q
!= '\0')
7193 goto invalid_matches
;
7196 matches
[i
].rep_len
= q
- matches
[i
].replace
;
7202 /* Now build a list of the replacement string for switches that we care
7203 about. Make sure we allocate at least one entry. This prevents
7204 xmalloc from calling fatal, and prevents us from re-executing this
7207 = XNEWVEC (struct mswitchstr
, n_mdswitches
+ (n_switches
? n_switches
: 1));
7208 for (i
= 0; i
< n_switches
; i
++)
7209 if ((switches
[i
].live_cond
& SWITCH_IGNORE
) == 0)
7211 int xlen
= strlen (switches
[i
].part1
);
7212 for (j
= 0; j
< cnt
; j
++)
7213 if (xlen
== matches
[j
].len
7214 && ! strncmp (switches
[i
].part1
, matches
[j
].str
, xlen
))
7216 mswitches
[n_mswitches
].str
= matches
[j
].replace
;
7217 mswitches
[n_mswitches
].len
= matches
[j
].rep_len
;
7218 mswitches
[n_mswitches
].replace
= (char *) 0;
7219 mswitches
[n_mswitches
].rep_len
= 0;
7225 /* Add MULTILIB_DEFAULTS switches too, as long as they were not present
7226 on the command line nor any options mutually incompatible with
7228 for (i
= 0; i
< n_mdswitches
; i
++)
7232 for (q
= multilib_options
; *q
!= '\0'; q
++)
7238 while (strncmp (q
, mdswitches
[i
].str
, mdswitches
[i
].len
) != 0
7239 || strchr (" /", q
[mdswitches
[i
].len
]) == NULL
)
7241 while (*q
!= ' ' && *q
!= '/' && *q
!= '\0')
7248 if (*q
!= ' ' && *q
!= '\0')
7250 while (*r
!= ' ' && *r
!= '\0')
7253 while (*q
!= ' ' && *q
!= '/' && *q
!= '\0')
7256 if (used_arg (r
, q
- r
))
7261 mswitches
[n_mswitches
].str
= mdswitches
[i
].str
;
7262 mswitches
[n_mswitches
].len
= mdswitches
[i
].len
;
7263 mswitches
[n_mswitches
].replace
= (char *) 0;
7264 mswitches
[n_mswitches
].rep_len
= 0;
7277 for (i
= 0; i
< n_mswitches
; i
++)
7278 if (len
== mswitches
[i
].len
&& ! strncmp (p
, mswitches
[i
].str
, len
))
7285 default_arg (const char *p
, int len
)
7289 for (i
= 0; i
< n_mdswitches
; i
++)
7290 if (len
== mdswitches
[i
].len
&& ! strncmp (p
, mdswitches
[i
].str
, len
))
7296 /* Work out the subdirectory to use based on the options. The format of
7297 multilib_select is a list of elements. Each element is a subdirectory
7298 name followed by a list of options followed by a semicolon. The format
7299 of multilib_exclusions is the same, but without the preceding
7300 directory. First gcc will check the exclusions, if none of the options
7301 beginning with an exclamation point are present, and all of the other
7302 options are present, then we will ignore this completely. Passing
7303 that, gcc will consider each multilib_select in turn using the same
7304 rules for matching the options. If a match is found, that subdirectory
7308 set_multilib_dir (void)
7311 unsigned int this_path_len
;
7312 const char *this_path
, *this_arg
;
7313 const char *start
, *end
;
7315 int ok
, ndfltok
, first
;
7318 start
= multilib_defaults
;
7319 while (*start
== ' ' || *start
== '\t')
7321 while (*start
!= '\0')
7324 while (*start
!= ' ' && *start
!= '\t' && *start
!= '\0')
7326 while (*start
== ' ' || *start
== '\t')
7334 mdswitches
= XNEWVEC (struct mdswitchstr
, n_mdswitches
);
7335 for (start
= multilib_defaults
; *start
!= '\0'; start
= end
+ 1)
7337 while (*start
== ' ' || *start
== '\t')
7343 for (end
= start
+ 1;
7344 *end
!= ' ' && *end
!= '\t' && *end
!= '\0'; end
++)
7347 obstack_grow (&multilib_obstack
, start
, end
- start
);
7348 obstack_1grow (&multilib_obstack
, 0);
7349 mdswitches
[i
].str
= XOBFINISH (&multilib_obstack
, const char *);
7350 mdswitches
[i
++].len
= end
- start
;
7357 p
= multilib_exclusions
;
7360 /* Ignore newlines. */
7367 /* Check the arguments. */
7374 fatal_error ("multilib exclusions %qs is invalid",
7375 multilib_exclusions
);
7385 while (*p
!= ' ' && *p
!= ';')
7388 goto invalid_exclusions
;
7392 if (*this_arg
!= '!')
7400 ok
= used_arg (this_arg
, p
- this_arg
);
7415 p
= multilib_select
;
7418 /* Ignore newlines. */
7425 /* Get the initial path. */
7432 fatal_error ("multilib select %qs is invalid",
7437 this_path_len
= p
- this_path
;
7439 /* Check the arguments. */
7446 goto invalid_select
;
7455 while (*p
!= ' ' && *p
!= ';')
7458 goto invalid_select
;
7462 if (*this_arg
!= '!')
7470 /* If this is a default argument, we can just ignore it.
7471 This is true even if this_arg begins with '!'. Beginning
7472 with '!' does not mean that this argument is necessarily
7473 inappropriate for this library: it merely means that
7474 there is a more specific library which uses this
7475 argument. If this argument is a default, we need not
7476 consider that more specific library. */
7477 ok
= used_arg (this_arg
, p
- this_arg
);
7484 if (default_arg (this_arg
, p
- this_arg
))
7493 if (this_path_len
!= 1
7494 || this_path
[0] != '.')
7496 char *new_multilib_dir
= XNEWVEC (char, this_path_len
+ 1);
7499 strncpy (new_multilib_dir
, this_path
, this_path_len
);
7500 new_multilib_dir
[this_path_len
] = '\0';
7501 q
= strchr (new_multilib_dir
, ':');
7504 multilib_dir
= new_multilib_dir
;
7511 const char *q
= this_path
, *end
= this_path
+ this_path_len
;
7513 while (q
< end
&& *q
!= ':')
7517 char *new_multilib_os_dir
= XNEWVEC (char, end
- q
);
7518 memcpy (new_multilib_os_dir
, q
+ 1, end
- q
- 1);
7519 new_multilib_os_dir
[end
- q
- 1] = '\0';
7520 multilib_os_dir
= new_multilib_os_dir
;
7528 if (multilib_dir
== NULL
&& multilib_os_dir
!= NULL
7529 && strcmp (multilib_os_dir
, ".") == 0)
7531 free (CONST_CAST (char *, multilib_os_dir
));
7532 multilib_os_dir
= NULL
;
7534 else if (multilib_dir
!= NULL
&& multilib_os_dir
== NULL
)
7535 multilib_os_dir
= multilib_dir
;
7538 /* Print out the multiple library subdirectory selection
7539 information. This prints out a series of lines. Each line looks
7540 like SUBDIRECTORY;@OPTION@OPTION, with as many options as is
7541 required. Only the desired options are printed out, the negative
7542 matches. The options are print without a leading dash. There are
7543 no spaces to make it easy to use the information in the shell.
7544 Each subdirectory is printed only once. This assumes the ordering
7545 generated by the genmultilib script. Also, we leave out ones that match
7549 print_multilib_info (void)
7551 const char *p
= multilib_select
;
7552 const char *last_path
= 0, *this_path
;
7554 unsigned int last_path_len
= 0;
7559 /* Ignore newlines. */
7566 /* Get the initial path. */
7573 fatal_error ("multilib select %qs is invalid", multilib_select
);
7579 /* When --disable-multilib was used but target defines
7580 MULTILIB_OSDIRNAMES, entries starting with .: are there just
7581 to find multilib_os_dir, so skip them from output. */
7582 if (this_path
[0] == '.' && this_path
[1] == ':')
7585 /* Check for matches with the multilib_exclusions. We don't bother
7586 with the '!' in either list. If any of the exclusion rules match
7587 all of its options with the select rule, we skip it. */
7589 const char *e
= multilib_exclusions
;
7590 const char *this_arg
;
7595 /* Ignore newlines. */
7602 /* Check the arguments. */
7611 fatal_error ("multilib exclusion %qs is invalid",
7612 multilib_exclusions
);
7623 while (*e
!= ' ' && *e
!= ';')
7626 goto invalid_exclusion
;
7634 int len
= e
- this_arg
;
7637 goto invalid_select
;
7641 while (*q
!= ' ' && *q
!= ';')
7644 goto invalid_select
;
7648 if (! strncmp (arg
, this_arg
,
7649 (len
< q
- arg
) ? q
- arg
: len
)
7650 || default_arg (this_arg
, e
- this_arg
))
7680 /* If this is a duplicate, skip it. */
7681 skip
= (last_path
!= 0
7682 && (unsigned int) (p
- this_path
) == last_path_len
7683 && ! filename_ncmp (last_path
, this_path
, last_path_len
));
7685 last_path
= this_path
;
7686 last_path_len
= p
- this_path
;
7689 /* If this directory requires any default arguments, we can skip
7690 it. We will already have printed a directory identical to
7691 this one which does not require that default argument. */
7702 goto invalid_select
;
7709 while (*q
!= ' ' && *q
!= ';')
7712 goto invalid_select
;
7717 && default_arg (arg
, q
- arg
))
7732 for (p1
= last_path
; p1
< p
&& *p1
!= ':'; p1
++)
7743 goto invalid_select
;
7751 use_arg
= *p
!= '!';
7756 while (*p
!= ' ' && *p
!= ';')
7759 goto invalid_select
;
7771 /* If there are extra options, print them now. */
7772 if (multilib_extra
&& *multilib_extra
)
7774 int print_at
= TRUE
;
7777 for (q
= multilib_extra
; *q
!= '\0'; q
++)
7798 /* getenv built-in spec function.
7800 Returns the value of the environment variable given by its first
7801 argument, concatenated with the second argument. If the
7802 environment variable is not defined, a fatal error is issued. */
7805 getenv_spec_function (int argc
, const char **argv
)
7815 value
= getenv (argv
[0]);
7817 fatal_error ("environment variable %qs not defined", argv
[0]);
7819 /* We have to escape every character of the environment variable so
7820 they are not interpreted as active spec characters. A
7821 particularly painful case is when we are reading a variable
7822 holding a windows path complete with \ separators. */
7823 len
= strlen (value
) * 2 + strlen (argv
[1]) + 1;
7824 result
= XNEWVAR (char, len
);
7825 for (ptr
= result
; *value
; ptr
+= 2)
7831 strcpy (ptr
, argv
[1]);
7836 /* if-exists built-in spec function.
7838 Checks to see if the file specified by the absolute pathname in
7839 ARGS exists. Returns that pathname if found.
7841 The usual use for this function is to check for a library file
7842 (whose name has been expanded with %s). */
7845 if_exists_spec_function (int argc
, const char **argv
)
7847 /* Must have only one argument. */
7848 if (argc
== 1 && IS_ABSOLUTE_PATH (argv
[0]) && ! access (argv
[0], R_OK
))
7854 /* if-exists-else built-in spec function.
7856 This is like if-exists, but takes an additional argument which
7857 is returned if the first argument does not exist. */
7860 if_exists_else_spec_function (int argc
, const char **argv
)
7862 /* Must have exactly two arguments. */
7866 if (IS_ABSOLUTE_PATH (argv
[0]) && ! access (argv
[0], R_OK
))
7872 /* replace-outfile built-in spec function.
7874 This looks for the first argument in the outfiles array's name and
7875 replaces it with the second argument. */
7878 replace_outfile_spec_function (int argc
, const char **argv
)
7881 /* Must have exactly two arguments. */
7885 for (i
= 0; i
< n_infiles
; i
++)
7887 if (outfiles
[i
] && !filename_cmp (outfiles
[i
], argv
[0]))
7888 outfiles
[i
] = xstrdup (argv
[1]);
7893 /* remove-outfile built-in spec function.
7895 * This looks for the first argument in the outfiles array's name and
7899 remove_outfile_spec_function (int argc
, const char **argv
)
7902 /* Must have exactly one argument. */
7906 for (i
= 0; i
< n_infiles
; i
++)
7908 if (outfiles
[i
] && !filename_cmp (outfiles
[i
], argv
[0]))
7914 /* Given two version numbers, compares the two numbers.
7915 A version number must match the regular expression
7916 ([1-9][0-9]*|0)(\.([1-9][0-9]*|0))*
7919 compare_version_strings (const char *v1
, const char *v2
)
7924 if (regcomp (&r
, "^([1-9][0-9]*|0)(\\.([1-9][0-9]*|0))*$",
7925 REG_EXTENDED
| REG_NOSUB
) != 0)
7927 rresult
= regexec (&r
, v1
, 0, NULL
, 0);
7928 if (rresult
== REG_NOMATCH
)
7929 fatal_error ("invalid version number %qs", v1
);
7930 else if (rresult
!= 0)
7932 rresult
= regexec (&r
, v2
, 0, NULL
, 0);
7933 if (rresult
== REG_NOMATCH
)
7934 fatal_error ("invalid version number %qs", v2
);
7935 else if (rresult
!= 0)
7938 return strverscmp (v1
, v2
);
7942 /* version_compare built-in spec function.
7944 This takes an argument of the following form:
7946 <comparison-op> <arg1> [<arg2>] <switch> <result>
7948 and produces "result" if the comparison evaluates to true,
7949 and nothing if it doesn't.
7951 The supported <comparison-op> values are:
7953 >= true if switch is a later (or same) version than arg1
7955 < true if switch is an earlier version than arg1
7957 >< true if switch is arg1 or later, and earlier than arg2
7958 <> true if switch is earlier than arg1 or is arg2 or later
7960 If the switch is not present, the condition is false unless
7961 the first character of the <comparison-op> is '!'.
7964 %:version-compare(>= 10.3 mmacosx-version-min= -lmx)
7965 adds -lmx if -mmacosx-version-min=10.3.9 was passed. */
7968 version_compare_spec_function (int argc
, const char **argv
)
7972 const char *switch_value
= NULL
;
7977 fatal_error ("too few arguments to %%:version-compare");
7978 if (argv
[0][0] == '\0')
7980 if ((argv
[0][1] == '<' || argv
[0][1] == '>') && argv
[0][0] != '!')
7982 if (argc
!= nargs
+ 3)
7983 fatal_error ("too many arguments to %%:version-compare");
7985 switch_len
= strlen (argv
[nargs
+ 1]);
7986 for (i
= 0; i
< n_switches
; i
++)
7987 if (!strncmp (switches
[i
].part1
, argv
[nargs
+ 1], switch_len
)
7988 && check_live_switch (i
, switch_len
))
7989 switch_value
= switches
[i
].part1
+ switch_len
;
7991 if (switch_value
== NULL
)
7995 comp1
= compare_version_strings (switch_value
, argv
[1]);
7997 comp2
= compare_version_strings (switch_value
, argv
[2]);
7999 comp2
= -1; /* This value unused. */
8002 switch (argv
[0][0] << 8 | argv
[0][1])
8004 case '>' << 8 | '=':
8005 result
= comp1
>= 0;
8007 case '!' << 8 | '<':
8008 result
= comp1
>= 0 || switch_value
== NULL
;
8013 case '!' << 8 | '>':
8014 result
= comp1
< 0 || switch_value
== NULL
;
8016 case '>' << 8 | '<':
8017 result
= comp1
>= 0 && comp2
< 0;
8019 case '<' << 8 | '>':
8020 result
= comp1
< 0 || comp2
>= 0;
8024 fatal_error ("unknown operator %qs in %%:version-compare", argv
[0]);
8029 return argv
[nargs
+ 2];
8032 /* %:include builtin spec function. This differs from %include in that it
8033 can be nested inside a spec, and thus be conditionalized. It takes
8034 one argument, the filename, and looks for it in the startfile path.
8035 The result is always NULL, i.e. an empty expansion. */
8038 include_spec_function (int argc
, const char **argv
)
8045 file
= find_a_file (&startfile_prefixes
, argv
[0], R_OK
, true);
8046 read_specs (file
? file
: argv
[0], FALSE
);
8051 /* %:find-file spec function. This function replaces its argument by
8052 the file found thru find_file, that is the -print-file-name gcc
8055 find_file_spec_function (int argc
, const char **argv
)
8062 file
= find_file (argv
[0]);
8067 /* %:find-plugindir spec function. This function replaces its argument
8068 by the -iplugindir=<dir> option. `dir' is found thru find_file, that
8069 is the -print-file-name gcc program option. */
8071 find_plugindir_spec_function (int argc
, const char **argv ATTRIBUTE_UNUSED
)
8078 option
= concat ("-iplugindir=", find_file ("plugin"), NULL
);
8083 /* %:print-asm-header spec function. Print a banner to say that the
8084 following output is from the assembler. */
8087 print_asm_header_spec_function (int arg ATTRIBUTE_UNUSED
,
8088 const char **argv ATTRIBUTE_UNUSED
)
8090 printf (_("Assembler options\n=================\n\n"));
8091 printf (_("Use \"-Wa,OPTION\" to pass \"OPTION\" to the assembler.\n\n"));
8096 /* Get a random number for -frandom-seed */
8098 static unsigned HOST_WIDE_INT
8099 get_random_number (void)
8101 unsigned HOST_WIDE_INT ret
= 0;
8104 fd
= open ("/dev/urandom", O_RDONLY
);
8107 read (fd
, &ret
, sizeof (HOST_WIDE_INT
));
8113 /* Get some more or less random data. */
8114 #ifdef HAVE_GETTIMEOFDAY
8118 gettimeofday (&tv
, NULL
);
8119 ret
= tv
.tv_sec
* 1000 + tv
.tv_usec
/ 1000;
8123 time_t now
= time (NULL
);
8125 if (now
!= (time_t)-1)
8126 ret
= (unsigned) now
;
8130 return ret
^ getpid();
8133 /* %:compare-debug-dump-opt spec function. Save the last argument,
8134 expected to be the last -fdump-final-insns option, or generate a
8138 compare_debug_dump_opt_spec_function (int arg
,
8139 const char **argv ATTRIBUTE_UNUSED
)
8144 static char random_seed
[HOST_BITS_PER_WIDE_INT
/ 4 + 3];
8147 fatal_error ("too many arguments to %%:compare-debug-dump-opt");
8149 do_spec_2 ("%{fdump-final-insns=*:%*}");
8150 do_spec_1 (" ", 0, NULL
);
8152 if (VEC_length (const_char_p
, argbuf
) > 0
8153 && strcmp (argv
[VEC_length (const_char_p
, argbuf
) - 1], "."))
8158 name
= xstrdup (argv
[VEC_length (const_char_p
, argbuf
) - 1]);
8163 const char *ext
= NULL
;
8165 if (VEC_length (const_char_p
, argbuf
) > 0)
8167 do_spec_2 ("%{o*:%*}%{!o:%{!S:%b%O}%{S:%b.s}}");
8170 else if (!compare_debug
)
8173 do_spec_2 ("%g.gkd");
8175 do_spec_1 (" ", 0, NULL
);
8177 gcc_assert (VEC_length (const_char_p
, argbuf
) > 0);
8179 name
= concat (VEC_last (const_char_p
, argbuf
), ext
, NULL
);
8181 ret
= concat ("-fdump-final-insns=", name
, NULL
);
8184 which
= compare_debug
< 0;
8185 debug_check_temp_file
[which
] = name
;
8189 unsigned HOST_WIDE_INT value
= get_random_number ();
8191 sprintf (random_seed
, HOST_WIDE_INT_PRINT_HEX
, value
);
8195 ret
= concat ("%{!frandom-seed=*:-frandom-seed=", random_seed
, "} ",
8204 static const char *debug_auxbase_opt
;
8206 /* %:compare-debug-self-opt spec function. Expands to the options
8207 that are to be passed in the second compilation of
8211 compare_debug_self_opt_spec_function (int arg
,
8212 const char **argv ATTRIBUTE_UNUSED
)
8215 fatal_error ("too many arguments to %%:compare-debug-self-opt");
8217 if (compare_debug
>= 0)
8220 do_spec_2 ("%{c|S:%{o*:%*}}");
8221 do_spec_1 (" ", 0, NULL
);
8223 if (VEC_length (const_char_p
, argbuf
) > 0)
8224 debug_auxbase_opt
= concat ("-auxbase-strip ",
8225 VEC_last (const_char_p
, argbuf
),
8228 debug_auxbase_opt
= NULL
;
8231 %<o %<MD %<MMD %<MF* %<MG %<MP %<MQ* %<MT* \
8232 %<fdump-final-insns=* -w -S -o %j \
8233 %{!fcompare-debug-second:-fcompare-debug-second} \
8234 ", compare_debug_opt
, NULL
);
8237 /* %:compare-debug-auxbase-opt spec function. Expands to the auxbase
8238 options that are to be passed in the second compilation of
8239 compare-debug. It expects, as an argument, the basename of the
8240 current input file name, with the .gk suffix appended to it. */
8243 compare_debug_auxbase_opt_spec_function (int arg
,
8250 fatal_error ("too few arguments to %%:compare-debug-auxbase-opt");
8253 fatal_error ("too many arguments to %%:compare-debug-auxbase-opt");
8255 if (compare_debug
>= 0)
8258 len
= strlen (argv
[0]);
8259 if (len
< 3 || strcmp (argv
[0] + len
- 3, ".gk") != 0)
8260 fatal_error ("argument to %%:compare-debug-auxbase-opt "
8261 "does not end in .gk");
8263 if (debug_auxbase_opt
)
8264 return debug_auxbase_opt
;
8266 #define OPT "-auxbase "
8269 name
= (char*) xmalloc (sizeof (OPT
) + len
);
8270 memcpy (name
, OPT
, sizeof (OPT
) - 1);
8271 memcpy (name
+ sizeof (OPT
) - 1, argv
[0], len
);
8272 name
[sizeof (OPT
) - 1 + len
] = '\0';
8279 /* %:pass-through-libs spec function. Finds all -l options and input
8280 file names in the lib spec passed to it, and makes a list of them
8281 prepended with the plugin option to cause them to be passed through
8282 to the final link after all the new object files have been added. */
8285 pass_through_libs_spec_func (int argc
, const char **argv
)
8287 char *prepended
= xstrdup (" ");
8289 /* Shlemiel the painter's algorithm. Innately horrible, but at least
8290 we know that there will never be more than a handful of strings to
8291 concat, and it's only once per run, so it's not worth optimising. */
8292 for (n
= 0; n
< argc
; n
++)
8294 char *old
= prepended
;
8295 /* Anything that isn't an option is a full path to an output
8296 file; pass it through if it ends in '.a'. Among options,
8298 if (argv
[n
][0] == '-' && argv
[n
][1] == 'l')
8300 const char *lopt
= argv
[n
] + 2;
8301 /* Handle both joined and non-joined -l options. If for any
8302 reason there's a trailing -l with no joined or following
8303 arg just discard it. */
8304 if (!*lopt
&& ++n
>= argc
)
8308 prepended
= concat (prepended
, "-plugin-opt=-pass-through=-l",
8311 else if (!strcmp (".a", argv
[n
] + strlen (argv
[n
]) - 2))
8313 prepended
= concat (prepended
, "-plugin-opt=-pass-through=",
8314 argv
[n
], " ", NULL
);
8316 if (prepended
!= old
)