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 %M Output multilib_os_dir.
381 %G process LIBGCC_SPEC as a spec.
382 %R Output the concatenation of target_system_root and
383 target_sysroot_suffix.
384 %S process STARTFILE_SPEC as a spec. A capital S is actually used here.
385 %E process ENDFILE_SPEC as a spec. A capital E is actually used here.
386 %C process CPP_SPEC as a spec.
387 %1 process CC1_SPEC as a spec.
388 %2 process CC1PLUS_SPEC as a spec.
389 %* substitute the variable part of a matched option. (See below.)
390 Note that each comma in the substituted string is replaced by
392 %<S remove all occurrences of -S from the command line.
393 Note - this command is position dependent. % commands in the
394 spec string before this one will see -S, % commands in the
395 spec string after this one will not.
396 %>S Similar to "%<S", but keep it in the GCC command line.
397 %<S* remove all occurrences of all switches beginning with -S from the
400 Call the named function FUNCTION, passing it ARGS. ARGS is
401 first processed as a nested spec string, then split into an
402 argument vector in the usual fashion. The function returns
403 a string which is processed as if it had appeared literally
404 as part of the current spec.
405 %{S} substitutes the -S switch, if that switch was given to GCC.
406 If that switch was not specified, this substitutes nothing.
407 Here S is a metasyntactic variable.
408 %{S*} substitutes all the switches specified to GCC whose names start
409 with -S. This is used for -o, -I, etc; switches that take
410 arguments. GCC considers `-o foo' as being one switch whose
411 name starts with `o'. %{o*} would substitute this text,
412 including the space; thus, two arguments would be generated.
413 %{S*&T*} likewise, but preserve order of S and T options (the order
414 of S and T in the spec is not significant). Can be any number
415 of ampersand-separated variables; for each the wild card is
416 optional. Useful for CPP as %{D*&U*&A*}.
418 %{S:X} substitutes X, if the -S switch was given to GCC.
419 %{!S:X} substitutes X, if the -S switch was NOT given to GCC.
420 %{S*:X} substitutes X if one or more switches whose names start
421 with -S was given to GCC. Normally X is substituted only
422 once, no matter how many such switches appeared. However,
423 if %* appears somewhere in X, then X will be substituted
424 once for each matching switch, with the %* replaced by the
425 part of that switch that matched the '*'.
426 %{.S:X} substitutes X, if processing a file with suffix S.
427 %{!.S:X} substitutes X, if NOT processing a file with suffix S.
428 %{,S:X} substitutes X, if processing a file which will use spec S.
429 %{!,S:X} substitutes X, if NOT processing a file which will use spec S.
431 %{S|T:X} substitutes X if either -S or -T was given to GCC. This may be
432 combined with '!', '.', ',', and '*' as above binding stronger
434 If %* appears in X, all of the alternatives must be starred, and
435 only the first matching alternative is substituted.
436 %{S:X; if S was given to GCC, substitutes X;
437 T:Y; else if T was given to GCC, substitutes Y;
438 :D} else substitutes D. There can be as many clauses as you need.
439 This may be combined with '.', '!', ',', '|', and '*' as above.
441 %(Spec) processes a specification defined in a specs file as *Spec:
443 The conditional text X in a %{S:X} or similar construct may contain
444 other nested % constructs or spaces, or even newlines. They are
445 processed as usual, as described above. Trailing white space in X is
446 ignored. White space may also appear anywhere on the left side of the
447 colon in these constructs, except between . or * and the corresponding
450 The -O, -f, -m, and -W switches are handled specifically in these
451 constructs. If another value of -O or the negated form of a -f, -m, or
452 -W switch is found later in the command line, the earlier switch
453 value is ignored, except with {S*} where S is just one letter; this
454 passes all matching options.
456 The character | at the beginning of the predicate text is used to indicate
457 that a command should be piped to the following command, but only if -pipe
460 Note that it is built into GCC which switches take arguments and which
461 do not. You might think it would be useful to generalize this to
462 allow each compiler's spec to say which switches take arguments. But
463 this cannot be done in a consistent fashion. GCC cannot even decide
464 which input files have been specified without knowing which switches
465 take arguments, and it must know which input files to compile in order
466 to tell which compilers to run.
468 GCC also knows implicitly that arguments starting in `-l' are to be
469 treated as compiler output files, and passed to the linker in their
470 proper position among the other output files. */
472 /* Define the macros used for specs %a, %l, %L, %S, %C, %1. */
474 /* config.h can define ASM_SPEC to provide extra args to the assembler
475 or extra switch-translations. */
480 /* config.h can define ASM_FINAL_SPEC to run a post processor after
481 the assembler has run. */
482 #ifndef ASM_FINAL_SPEC
483 #define ASM_FINAL_SPEC ""
486 /* config.h can define CPP_SPEC to provide extra args to the C preprocessor
487 or extra switch-translations. */
492 /* config.h can define CC1_SPEC to provide extra args to cc1 and cc1plus
493 or extra switch-translations. */
498 /* config.h can define CC1PLUS_SPEC to provide extra args to cc1plus
499 or extra switch-translations. */
501 #define CC1PLUS_SPEC ""
504 /* config.h can define LINK_SPEC to provide extra args to the linker
505 or extra switch-translations. */
510 /* config.h can define LIB_SPEC to override the default libraries. */
512 #define LIB_SPEC "%{!shared:%{g*:-lg} %{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p}}"
517 /* XXX: valid only for GNU ld */
518 /* XXX: should exactly match hooks provided by libmudflap.a */
519 #define MFWRAP_SPEC " %{static: %{fmudflap|fmudflapth: \
520 --wrap=malloc --wrap=free --wrap=calloc --wrap=realloc\
521 --wrap=mmap --wrap=mmap64 --wrap=munmap --wrap=alloca\
522 } %{fmudflapth: --wrap=pthread_create\
523 }} %{fmudflap|fmudflapth: --wrap=main}"
526 #define MFLIB_SPEC "%{fmudflap|fmudflapth: -export-dynamic}"
529 /* When using -fsplit-stack we need to wrap pthread_create, in order
530 to initialize the stack guard. We always use wrapping, rather than
531 shared library ordering, and we keep the wrapper function in
532 libgcc. This is not yet a real spec, though it could become one;
533 it is currently just stuffed into LINK_SPEC. FIXME: This wrapping
534 only works with GNU ld and gold. FIXME: This is incompatible with
535 -fmudflap when linking statically, which wants to do its own
537 #define STACK_SPLIT_SPEC " %{fsplit-stack: --wrap=pthread_create}"
539 /* config.h can define LIBGCC_SPEC to override how and when libgcc.a is
542 #if defined(REAL_LIBGCC_SPEC)
543 #define LIBGCC_SPEC REAL_LIBGCC_SPEC
544 #elif defined(LINK_LIBGCC_SPECIAL_1)
545 /* Have gcc do the search for libgcc.a. */
546 #define LIBGCC_SPEC "libgcc.a%s"
548 #define LIBGCC_SPEC "-lgcc"
552 /* config.h can define STARTFILE_SPEC to override the default crt0 files. */
553 #ifndef STARTFILE_SPEC
554 #define STARTFILE_SPEC \
555 "%{!shared:%{pg:gcrt0%O%s}%{!pg:%{p:mcrt0%O%s}%{!p:crt0%O%s}}}"
558 /* config.h can define ENDFILE_SPEC to override the default crtn files. */
560 #define ENDFILE_SPEC ""
564 #define LINKER_NAME "collect2"
567 #ifdef HAVE_AS_DEBUG_PREFIX_MAP
568 #define ASM_MAP " %{fdebug-prefix-map=*:--debug-prefix-map %*}"
573 /* Define ASM_DEBUG_SPEC to be a spec suitable for translating '-g'
575 #ifndef ASM_DEBUG_SPEC
576 # if defined(DBX_DEBUGGING_INFO) && defined(DWARF2_DEBUGGING_INFO) \
577 && defined(HAVE_AS_GDWARF2_DEBUG_FLAG) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
578 # define ASM_DEBUG_SPEC \
579 (PREFERRED_DEBUGGING_TYPE == DBX_DEBUG \
580 ? "%{!g0:%{gdwarf-2*:--gdwarf2}%{!gdwarf-2*:%{g*:--gstabs}}}" ASM_MAP \
581 : "%{!g0:%{gstabs*:--gstabs}%{!gstabs*:%{g*:--gdwarf2}}}" ASM_MAP)
583 # if defined(DBX_DEBUGGING_INFO) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
584 # define ASM_DEBUG_SPEC "%{g*:%{!g0:--gstabs}}" ASM_MAP
586 # if defined(DWARF2_DEBUGGING_INFO) && defined(HAVE_AS_GDWARF2_DEBUG_FLAG)
587 # define ASM_DEBUG_SPEC "%{g*:%{!g0:--gdwarf2}}" ASM_MAP
591 #ifndef ASM_DEBUG_SPEC
592 # define ASM_DEBUG_SPEC ""
595 /* Here is the spec for running the linker, after compiling all files. */
597 /* This is overridable by the target in case they need to specify the
598 -lgcc and -lc order specially, yet not require them to override all
599 of LINK_COMMAND_SPEC. */
600 #ifndef LINK_GCC_C_SEQUENCE_SPEC
601 #define LINK_GCC_C_SEQUENCE_SPEC "%G %L %G"
604 #ifndef LINK_SSP_SPEC
605 #ifdef TARGET_LIBC_PROVIDES_SSP
606 #define LINK_SSP_SPEC "%{fstack-protector:}"
608 #define LINK_SSP_SPEC "%{fstack-protector|fstack-protector-all:-lssp_nonshared -lssp}"
612 #ifndef LINK_PIE_SPEC
614 #define LINK_PIE_SPEC "%{pie:-pie} "
616 #define LINK_PIE_SPEC "%{pie:} "
620 #ifndef LINK_BUILDID_SPEC
621 # if defined(HAVE_LD_BUILDID) && defined(ENABLE_LD_BUILDID)
622 # define LINK_BUILDID_SPEC "%{!r:--build-id} "
626 /* Conditional to test whether the LTO plugin is used or not.
627 FIXME: For slim LTO we will need to enable plugin unconditionally. This
628 still cause problems with PLUGIN_LD != LD and when plugin is built but
629 not useable. For GCC 4.6 we don't support slim LTO and thus we can enable
630 plugin only when LTO is enabled. We still honor explicit
631 -fuse-linker-plugin if the linker used understands -plugin. */
633 /* The linker has some plugin support. */
634 #if HAVE_LTO_PLUGIN > 0
635 /* The linker used has full plugin support, use LTO plugin by default. */
636 #if HAVE_LTO_PLUGIN == 2
637 #define PLUGIN_COND "!fno-use-linker-plugin:%{flto|flto=*|fuse-linker-plugin"
638 #define PLUGIN_COND_CLOSE "}"
640 /* The linker used has limited plugin support, use LTO plugin with explicit
641 -fuse-linker-plugin. */
642 #define PLUGIN_COND "fuse-linker-plugin"
643 #define PLUGIN_COND_CLOSE ""
645 #define LINK_PLUGIN_SPEC \
647 -plugin %(linker_plugin_file) \
648 -plugin-opt=%(lto_wrapper) \
649 -plugin-opt=-fresolution=%u.res \
650 %{!nostdlib:%{!nodefaultlibs:%:pass-through-libs(%(link_gcc_c_sequence))}} \
653 /* The linker used doesn't support -plugin, reject -fuse-linker-plugin. */
654 #define LINK_PLUGIN_SPEC "%{fuse-linker-plugin:\
655 %e-fuse-linker-plugin is not supported in this configuration}"
659 /* -u* was put back because both BSD and SysV seem to support it. */
660 /* %{static:} simply prevents an error message if the target machine
661 doesn't handle -static. */
662 /* We want %{T*} after %{L*} and %D so that it can be used to specify linker
663 scripts which exist in user specified directories, or in standard
665 /* We pass any -flto flags on to the linker, which is expected
666 to understand them. In practice, this means it had better be collect2. */
667 /* %{e*} includes -export-dynamic; see comment in common.opt. */
668 #ifndef LINK_COMMAND_SPEC
669 #define LINK_COMMAND_SPEC "\
670 %{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:\
673 "%{flto|flto=*:%<fcompare-debug*} \
674 %{flto} %{flto=*} %l " LINK_PIE_SPEC \
675 "%X %{o*} %{e*} %{N} %{n} %{r}\
676 %{s} %{t} %{u*} %{z} %{Z} %{!nostdlib:%{!nostartfiles:%S}}\
677 %{static:} %{L*} %(mfwrap) %(link_libgcc) %o\
678 %{fopenmp|ftree-parallelize-loops=*:%:include(libgomp.spec)%(link_gomp)}\
679 %{fgnu-tm:%:include(libitm.spec)%(link_itm)}\
680 %(mflib) " STACK_SPLIT_SPEC "\
681 %{fprofile-arcs|fprofile-generate*|coverage:-lgcov}\
682 %{!nostdlib:%{!nodefaultlibs:%(link_ssp) %(link_gcc_c_sequence)}}\
683 %{!nostdlib:%{!nostartfiles:%E}} %{T*} }}}}}}"
686 #ifndef LINK_LIBGCC_SPEC
687 /* Generate -L options for startfile prefix list. */
688 # define LINK_LIBGCC_SPEC "%D"
691 #ifndef STARTFILE_PREFIX_SPEC
692 # define STARTFILE_PREFIX_SPEC ""
696 # define SYSROOT_SPEC "--sysroot=%R"
699 #ifndef SYSROOT_SUFFIX_SPEC
700 # define SYSROOT_SUFFIX_SPEC ""
703 #ifndef SYSROOT_HEADERS_SUFFIX_SPEC
704 # define SYSROOT_HEADERS_SUFFIX_SPEC ""
707 static const char *asm_debug
= ASM_DEBUG_SPEC
;
708 static const char *cpp_spec
= CPP_SPEC
;
709 static const char *cc1_spec
= CC1_SPEC
;
710 static const char *cc1plus_spec
= CC1PLUS_SPEC
;
711 static const char *link_gcc_c_sequence_spec
= LINK_GCC_C_SEQUENCE_SPEC
;
712 static const char *link_ssp_spec
= LINK_SSP_SPEC
;
713 static const char *asm_spec
= ASM_SPEC
;
714 static const char *asm_final_spec
= ASM_FINAL_SPEC
;
715 static const char *link_spec
= LINK_SPEC
;
716 static const char *lib_spec
= LIB_SPEC
;
717 static const char *mfwrap_spec
= MFWRAP_SPEC
;
718 static const char *mflib_spec
= MFLIB_SPEC
;
719 static const char *link_gomp_spec
= "";
720 static const char *libgcc_spec
= LIBGCC_SPEC
;
721 static const char *endfile_spec
= ENDFILE_SPEC
;
722 static const char *startfile_spec
= STARTFILE_SPEC
;
723 static const char *linker_name_spec
= LINKER_NAME
;
724 static const char *linker_plugin_file_spec
= "";
725 static const char *lto_wrapper_spec
= "";
726 static const char *lto_gcc_spec
= "";
727 static const char *link_command_spec
= LINK_COMMAND_SPEC
;
728 static const char *link_libgcc_spec
= LINK_LIBGCC_SPEC
;
729 static const char *startfile_prefix_spec
= STARTFILE_PREFIX_SPEC
;
730 static const char *sysroot_spec
= SYSROOT_SPEC
;
731 static const char *sysroot_suffix_spec
= SYSROOT_SUFFIX_SPEC
;
732 static const char *sysroot_hdrs_suffix_spec
= SYSROOT_HEADERS_SUFFIX_SPEC
;
733 static const char *self_spec
= "";
735 /* Standard options to cpp, cc1, and as, to reduce duplication in specs.
736 There should be no need to override these in target dependent files,
737 but we need to copy them to the specs file so that newer versions
738 of the GCC driver can correctly drive older tool chains with the
739 appropriate -B options. */
741 /* When cpplib handles traditional preprocessing, get rid of this, and
742 call cc1 (or cc1obj in objc/lang-specs.h) from the main specs so
743 that we default the front end language better. */
744 static const char *trad_capable_cpp
=
745 "cc1 -E %{traditional|traditional-cpp:-traditional-cpp}";
747 /* We don't wrap .d files in %W{} since a missing .d file, and
748 therefore no dependency entry, confuses make into thinking a .o
749 file that happens to exist is up-to-date. */
750 static const char *cpp_unique_options
=
751 "%{!Q:-quiet} %{nostdinc*} %{C} %{CC} %{v} %{I*&F*} %{P} %I\
752 %{MD:-MD %{!o:%b.d}%{o*:%.d%*}}\
753 %{MMD:-MMD %{!o:%b.d}%{o*:%.d%*}}\
754 %{M} %{MM} %{MF*} %{MG} %{MP} %{MQ*} %{MT*}\
755 %{!E:%{!M:%{!MM:%{!MT:%{!MQ:%{MD|MMD:%{o*:-MQ %*}}}}}}}\
756 %{remap} %{g3|ggdb3|gstabs3|gcoff3|gxcoff3|gvms3:-dD}\
757 %{!iplugindir*:%{fplugin*:%:find-plugindir()}}\
758 %{H} %C %{D*&U*&A*} %{i*} %Z %i\
759 %{fmudflap:-D_MUDFLAP -include mf-runtime.h}\
760 %{fmudflapth:-D_MUDFLAP -D_MUDFLAPTH -include mf-runtime.h}\
763 /* This contains cpp options which are common with cc1_options and are passed
764 only when preprocessing only to avoid duplication. We pass the cc1 spec
765 options to the preprocessor so that it the cc1 spec may manipulate
766 options used to set target flags. Those special target flags settings may
767 in turn cause preprocessor symbols to be defined specially. */
768 static const char *cpp_options
=
769 "%(cpp_unique_options) %1 %{m*} %{std*&ansi&trigraphs} %{W*&pedantic*} %{w}\
770 %{f*} %{g*:%{!g0:%{g*} %{!fno-working-directory:-fworking-directory}}} %{O*}\
771 %{undef} %{save-temps*:-fpch-preprocess}";
773 /* This contains cpp options which are not passed when the preprocessor
774 output will be used by another program. */
775 static const char *cpp_debug_options
= "%{d*}";
777 /* NB: This is shared amongst all front-ends, except for Ada. */
778 static const char *cc1_options
=
779 "%{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\
780 %{!iplugindir*:%{fplugin*:%:find-plugindir()}}\
781 %1 %{!Q:-quiet} %{!dumpbase:-dumpbase %B} %{d*} %{m*} %{aux-info*}\
782 %{fcompare-debug-second:%:compare-debug-auxbase-opt(%b)} \
783 %{!fcompare-debug-second:%{c|S:%{o*:-auxbase-strip %*}%{!o*:-auxbase %b}}}%{!c:%{!S:-auxbase %b}} \
784 %{g*} %{O*} %{W*&pedantic*} %{w} %{std*&ansi&trigraphs}\
785 %{v:-version} %{pg:-p} %{p} %{f*} %{undef}\
786 %{Qn:-fno-ident} %{Qy:} %{-help:--help}\
787 %{-target-help:--target-help}\
788 %{-version:--version}\
789 %{-help=*:--help=%*}\
790 %{!fsyntax-only:%{S:%W{o*}%{!o*:-o %b.s}}}\
791 %{fsyntax-only:-o %j} %{-param*}\
792 %{fmudflap|fmudflapth:-fno-builtin -fno-merge-constants}\
793 %{coverage:-fprofile-arcs -ftest-coverage}";
795 static const char *asm_options
=
796 "%{-target-help:%:print-asm-header()} "
798 /* If GNU AS is used, then convert -w (no warnings), -I, and -v
799 to the assembler equivalents. */
800 "%{v} %{w:-W} %{I*} "
802 "%a %Y %{c:%W{o*}%{!o*:-o %w%b%O}}%{!c:-o %d%w%u%O}";
804 static const char *invoke_as
=
805 #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT
807 %{fcompare-debug=*|fdump-final-insns=*:%:compare-debug-dump-opt()}\
808 %{!S:-o %|.s |\n as %(asm_options) %|.s %A }\
812 %{fcompare-debug=*|fdump-final-insns=*:%:compare-debug-dump-opt()}\
813 %{!S:-o %|.s |\n as %(asm_options) %m.s %A }\
817 /* Some compilers have limits on line lengths, and the multilib_select
818 and/or multilib_matches strings can be very long, so we build them at
820 static struct obstack multilib_obstack
;
821 static const char *multilib_select
;
822 static const char *multilib_matches
;
823 static const char *multilib_defaults
;
824 static const char *multilib_exclusions
;
826 /* Check whether a particular argument is a default argument. */
828 #ifndef MULTILIB_DEFAULTS
829 #define MULTILIB_DEFAULTS { "" }
832 static const char *const multilib_defaults_raw
[] = MULTILIB_DEFAULTS
;
834 #ifndef DRIVER_SELF_SPECS
835 #define DRIVER_SELF_SPECS ""
838 /* Adding -fopenmp should imply pthreads. This is particularly important
839 for targets that use different start files and suchlike. */
840 #ifndef GOMP_SELF_SPECS
841 #define GOMP_SELF_SPECS "%{fopenmp|ftree-parallelize-loops=*: -pthread}"
844 /* Likewise for -fgnu-tm. */
845 #ifndef GTM_SELF_SPECS
846 #define GTM_SELF_SPECS "%{fgnu-tm: -pthread}"
849 static const char *const driver_self_specs
[] = {
850 "%{fdump-final-insns:-fdump-final-insns=.} %<fdump-final-insns",
851 DRIVER_SELF_SPECS
, CONFIGURE_SPECS
, GOMP_SELF_SPECS
, GTM_SELF_SPECS
854 #ifndef OPTION_DEFAULT_SPECS
855 #define OPTION_DEFAULT_SPECS { "", "" }
864 static const struct default_spec
865 option_default_specs
[] = { OPTION_DEFAULT_SPECS
};
869 struct user_specs
*next
;
870 const char *filename
;
873 static struct user_specs
*user_specs_head
, *user_specs_tail
;
876 /* Record the mapping from file suffixes for compilation specs. */
880 const char *suffix
; /* Use this compiler for input files
881 whose names end in this suffix. */
883 const char *spec
; /* To use this compiler, run this spec. */
885 const char *cpp_spec
; /* If non-NULL, substitute this spec
886 for `%C', rather than the usual
888 const int combinable
; /* If nonzero, compiler can deal with
889 multiple source files at once (IMA). */
890 const int needs_preprocessing
; /* If nonzero, source files need to
891 be run through a preprocessor. */
894 /* Pointer to a vector of `struct compiler' that gives the spec for
895 compiling a file, based on its suffix.
896 A file that does not end in any of these suffixes will be passed
897 unchanged to the loader and nothing else will be done to it.
899 An entry containing two 0s is used to terminate the vector.
901 If multiple entries match a file, the last matching one is used. */
903 static struct compiler
*compilers
;
905 /* Number of entries in `compilers', not counting the null terminator. */
907 static int n_compilers
;
909 /* The default list of file name suffixes and their compilation specs. */
911 static const struct compiler default_compilers
[] =
913 /* Add lists of suffixes of known languages here. If those languages
914 were not present when we built the driver, we will hit these copies
915 and be given a more meaningful error than "file not used since
916 linking is not done". */
917 {".m", "#Objective-C", 0, 0, 0}, {".mi", "#Objective-C", 0, 0, 0},
918 {".mm", "#Objective-C++", 0, 0, 0}, {".M", "#Objective-C++", 0, 0, 0},
919 {".mii", "#Objective-C++", 0, 0, 0},
920 {".cc", "#C++", 0, 0, 0}, {".cxx", "#C++", 0, 0, 0},
921 {".cpp", "#C++", 0, 0, 0}, {".cp", "#C++", 0, 0, 0},
922 {".c++", "#C++", 0, 0, 0}, {".C", "#C++", 0, 0, 0},
923 {".CPP", "#C++", 0, 0, 0}, {".ii", "#C++", 0, 0, 0},
924 {".ads", "#Ada", 0, 0, 0}, {".adb", "#Ada", 0, 0, 0},
925 {".f", "#Fortran", 0, 0, 0}, {".F", "#Fortran", 0, 0, 0},
926 {".for", "#Fortran", 0, 0, 0}, {".FOR", "#Fortran", 0, 0, 0},
927 {".ftn", "#Fortran", 0, 0, 0}, {".FTN", "#Fortran", 0, 0, 0},
928 {".fpp", "#Fortran", 0, 0, 0}, {".FPP", "#Fortran", 0, 0, 0},
929 {".f90", "#Fortran", 0, 0, 0}, {".F90", "#Fortran", 0, 0, 0},
930 {".f95", "#Fortran", 0, 0, 0}, {".F95", "#Fortran", 0, 0, 0},
931 {".f03", "#Fortran", 0, 0, 0}, {".F03", "#Fortran", 0, 0, 0},
932 {".f08", "#Fortran", 0, 0, 0}, {".F08", "#Fortran", 0, 0, 0},
933 {".r", "#Ratfor", 0, 0, 0},
934 {".p", "#Pascal", 0, 0, 0}, {".pas", "#Pascal", 0, 0, 0},
935 {".java", "#Java", 0, 0, 0}, {".class", "#Java", 0, 0, 0},
936 {".zip", "#Java", 0, 0, 0}, {".jar", "#Java", 0, 0, 0},
937 {".go", "#Go", 0, 1, 0},
938 /* Next come the entries for C. */
939 {".c", "@c", 0, 0, 1},
941 /* cc1 has an integrated ISO C preprocessor. We should invoke the
942 external preprocessor if -save-temps is given. */
943 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\
946 %eGNU C no longer supports -traditional without -E}\
947 %{save-temps*|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
948 %(cpp_options) -o %{save-temps*:%b.i} %{!save-temps*:%g.i} \n\
949 cc1 -fpreprocessed %{save-temps*:%b.i} %{!save-temps*:%g.i} \
951 %{!save-temps*:%{!traditional-cpp:%{!no-integrated-cpp:\
952 cc1 %(cpp_unique_options) %(cc1_options)}}}\
953 %{!fsyntax-only:%(invoke_as)}}}}", 0, 0, 1},
955 "%{!E:%e-E or -x required when input is from standard input}\
956 %(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)", 0, 0, 0},
957 {".h", "@c-header", 0, 0, 0},
959 /* cc1 has an integrated ISO C preprocessor. We should invoke the
960 external preprocessor if -save-temps is given. */
961 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\
963 %{save-temps*|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
964 %(cpp_options) -o %{save-temps*:%b.i} %{!save-temps*:%g.i} \n\
965 cc1 -fpreprocessed %{save-temps*:%b.i} %{!save-temps*:%g.i} \
967 %{!fdump-ada-spec*:-o %g.s %{!o*:--output-pch=%i.gch}\
968 %W{o*:--output-pch=%*}}%V}\
969 %{!save-temps*:%{!traditional-cpp:%{!no-integrated-cpp:\
970 cc1 %(cpp_unique_options) %(cc1_options)\
971 %{!fdump-ada-spec*:-o %g.s %{!o*:--output-pch=%i.gch}\
972 %W{o*:--output-pch=%*}}%V}}}}}}", 0, 0, 0},
973 {".i", "@cpp-output", 0, 0, 0},
975 "%{!M:%{!MM:%{!E:cc1 -fpreprocessed %i %(cc1_options) %{!fsyntax-only:%(invoke_as)}}}}", 0, 0, 0},
976 {".s", "@assembler", 0, 0, 0},
978 "%{!M:%{!MM:%{!E:%{!S:as %(asm_debug) %(asm_options) %i %A }}}}", 0, 0, 0},
979 {".sx", "@assembler-with-cpp", 0, 0, 0},
980 {".S", "@assembler-with-cpp", 0, 0, 0},
981 {"@assembler-with-cpp",
982 #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT
983 "%(trad_capable_cpp) -lang-asm %(cpp_options) -fno-directives-only\
984 %{E|M|MM:%(cpp_debug_options)}\
985 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\
986 as %(asm_debug) %(asm_options) %|.s %A }}}}"
988 "%(trad_capable_cpp) -lang-asm %(cpp_options) -fno-directives-only\
989 %{E|M|MM:%(cpp_debug_options)}\
990 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\
991 as %(asm_debug) %(asm_options) %m.s %A }}}}"
996 /* Mark end of table. */
1000 /* Number of elements in default_compilers, not counting the terminator. */
1002 static const int n_default_compilers
= ARRAY_SIZE (default_compilers
) - 1;
1004 typedef char *char_p
; /* For DEF_VEC_P. */
1006 DEF_VEC_ALLOC_P(char_p
,heap
);
1008 /* A vector of options to give to the linker.
1009 These options are accumulated by %x,
1010 and substituted into the linker command with %X. */
1011 static VEC(char_p
,heap
) *linker_options
;
1013 /* A vector of options to give to the assembler.
1014 These options are accumulated by -Wa,
1015 and substituted into the assembler command with %Y. */
1016 static VEC(char_p
,heap
) *assembler_options
;
1018 /* A vector of options to give to the preprocessor.
1019 These options are accumulated by -Wp,
1020 and substituted into the preprocessor command with %Z. */
1021 static VEC(char_p
,heap
) *preprocessor_options
;
1024 skip_whitespace (char *p
)
1028 /* A fully-blank line is a delimiter in the SPEC file and shouldn't
1029 be considered whitespace. */
1030 if (p
[0] == '\n' && p
[1] == '\n' && p
[2] == '\n')
1032 else if (*p
== '\n' || *p
== ' ' || *p
== '\t')
1046 /* Structures to keep track of prefixes to try when looking for files. */
1050 const char *prefix
; /* String to prepend to the path. */
1051 struct prefix_list
*next
; /* Next in linked list. */
1052 int require_machine_suffix
; /* Don't use without machine_suffix. */
1053 /* 2 means try both machine_suffix and just_machine_suffix. */
1054 int priority
; /* Sort key - priority within list. */
1055 int os_multilib
; /* 1 if OS multilib scheme should be used,
1056 0 for GCC multilib scheme. */
1061 struct prefix_list
*plist
; /* List of prefixes to try */
1062 int max_len
; /* Max length of a prefix in PLIST */
1063 const char *name
; /* Name of this list (used in config stuff) */
1066 /* List of prefixes to try when looking for executables. */
1068 static struct path_prefix exec_prefixes
= { 0, 0, "exec" };
1070 /* List of prefixes to try when looking for startup (crt0) files. */
1072 static struct path_prefix startfile_prefixes
= { 0, 0, "startfile" };
1074 /* List of prefixes to try when looking for include files. */
1076 static struct path_prefix include_prefixes
= { 0, 0, "include" };
1078 /* Suffix to attach to directories searched for commands.
1079 This looks like `MACHINE/VERSION/'. */
1081 static const char *machine_suffix
= 0;
1083 /* Suffix to attach to directories searched for commands.
1084 This is just `MACHINE/'. */
1086 static const char *just_machine_suffix
= 0;
1088 /* Adjusted value of GCC_EXEC_PREFIX envvar. */
1090 static const char *gcc_exec_prefix
;
1092 /* Adjusted value of standard_libexec_prefix. */
1094 static const char *gcc_libexec_prefix
;
1096 /* Default prefixes to attach to command names. */
1098 #ifndef STANDARD_STARTFILE_PREFIX_1
1099 #define STANDARD_STARTFILE_PREFIX_1 "/lib/"
1101 #ifndef STANDARD_STARTFILE_PREFIX_2
1102 #define STANDARD_STARTFILE_PREFIX_2 "/usr/lib/"
1105 #ifdef CROSS_DIRECTORY_STRUCTURE /* Don't use these prefixes for a cross compiler. */
1106 #undef MD_EXEC_PREFIX
1107 #undef MD_STARTFILE_PREFIX
1108 #undef MD_STARTFILE_PREFIX_1
1111 /* If no prefixes defined, use the null string, which will disable them. */
1112 #ifndef MD_EXEC_PREFIX
1113 #define MD_EXEC_PREFIX ""
1115 #ifndef MD_STARTFILE_PREFIX
1116 #define MD_STARTFILE_PREFIX ""
1118 #ifndef MD_STARTFILE_PREFIX_1
1119 #define MD_STARTFILE_PREFIX_1 ""
1122 /* These directories are locations set at configure-time based on the
1123 --prefix option provided to configure. Their initializers are
1124 defined in Makefile.in. These paths are not *directly* used when
1125 gcc_exec_prefix is set because, in that case, we know where the
1126 compiler has been installed, and use paths relative to that
1127 location instead. */
1128 static const char *const standard_exec_prefix
= STANDARD_EXEC_PREFIX
;
1129 static const char *const standard_libexec_prefix
= STANDARD_LIBEXEC_PREFIX
;
1130 static const char *const standard_bindir_prefix
= STANDARD_BINDIR_PREFIX
;
1131 static const char *const standard_startfile_prefix
= STANDARD_STARTFILE_PREFIX
;
1133 /* For native compilers, these are well-known paths containing
1134 components that may be provided by the system. For cross
1135 compilers, these paths are not used. */
1136 static const char *md_exec_prefix
= MD_EXEC_PREFIX
;
1137 static const char *md_startfile_prefix
= MD_STARTFILE_PREFIX
;
1138 static const char *md_startfile_prefix_1
= MD_STARTFILE_PREFIX_1
;
1139 static const char *const standard_startfile_prefix_1
1140 = STANDARD_STARTFILE_PREFIX_1
;
1141 static const char *const standard_startfile_prefix_2
1142 = STANDARD_STARTFILE_PREFIX_2
;
1144 /* A relative path to be used in finding the location of tools
1145 relative to the driver. */
1146 static const char *const tooldir_base_prefix
= TOOLDIR_BASE_PREFIX
;
1148 /* Subdirectory to use for locating libraries. Set by
1149 set_multilib_dir based on the compilation options. */
1151 static const char *multilib_dir
;
1153 /* Subdirectory to use for locating libraries in OS conventions. Set by
1154 set_multilib_dir based on the compilation options. */
1156 static const char *multilib_os_dir
;
1158 /* Structure to keep track of the specs that have been defined so far.
1159 These are accessed using %(specname) in a compiler or link
1164 /* The following 2 fields must be first */
1165 /* to allow EXTRA_SPECS to be initialized */
1166 const char *name
; /* name of the spec. */
1167 const char *ptr
; /* available ptr if no static pointer */
1169 /* The following fields are not initialized */
1170 /* by EXTRA_SPECS */
1171 const char **ptr_spec
; /* pointer to the spec itself. */
1172 struct spec_list
*next
; /* Next spec in linked list. */
1173 int name_len
; /* length of the name */
1174 int alloc_p
; /* whether string was allocated */
1177 #define INIT_STATIC_SPEC(NAME,PTR) \
1178 { NAME, NULL, PTR, (struct spec_list *) 0, sizeof (NAME) - 1, 0 }
1180 /* List of statically defined specs. */
1181 static struct spec_list static_specs
[] =
1183 INIT_STATIC_SPEC ("asm", &asm_spec
),
1184 INIT_STATIC_SPEC ("asm_debug", &asm_debug
),
1185 INIT_STATIC_SPEC ("asm_final", &asm_final_spec
),
1186 INIT_STATIC_SPEC ("asm_options", &asm_options
),
1187 INIT_STATIC_SPEC ("invoke_as", &invoke_as
),
1188 INIT_STATIC_SPEC ("cpp", &cpp_spec
),
1189 INIT_STATIC_SPEC ("cpp_options", &cpp_options
),
1190 INIT_STATIC_SPEC ("cpp_debug_options", &cpp_debug_options
),
1191 INIT_STATIC_SPEC ("cpp_unique_options", &cpp_unique_options
),
1192 INIT_STATIC_SPEC ("trad_capable_cpp", &trad_capable_cpp
),
1193 INIT_STATIC_SPEC ("cc1", &cc1_spec
),
1194 INIT_STATIC_SPEC ("cc1_options", &cc1_options
),
1195 INIT_STATIC_SPEC ("cc1plus", &cc1plus_spec
),
1196 INIT_STATIC_SPEC ("link_gcc_c_sequence", &link_gcc_c_sequence_spec
),
1197 INIT_STATIC_SPEC ("link_ssp", &link_ssp_spec
),
1198 INIT_STATIC_SPEC ("endfile", &endfile_spec
),
1199 INIT_STATIC_SPEC ("link", &link_spec
),
1200 INIT_STATIC_SPEC ("lib", &lib_spec
),
1201 INIT_STATIC_SPEC ("mfwrap", &mfwrap_spec
),
1202 INIT_STATIC_SPEC ("mflib", &mflib_spec
),
1203 INIT_STATIC_SPEC ("link_gomp", &link_gomp_spec
),
1204 INIT_STATIC_SPEC ("libgcc", &libgcc_spec
),
1205 INIT_STATIC_SPEC ("startfile", &startfile_spec
),
1206 INIT_STATIC_SPEC ("cross_compile", &cross_compile
),
1207 INIT_STATIC_SPEC ("version", &compiler_version
),
1208 INIT_STATIC_SPEC ("multilib", &multilib_select
),
1209 INIT_STATIC_SPEC ("multilib_defaults", &multilib_defaults
),
1210 INIT_STATIC_SPEC ("multilib_extra", &multilib_extra
),
1211 INIT_STATIC_SPEC ("multilib_matches", &multilib_matches
),
1212 INIT_STATIC_SPEC ("multilib_exclusions", &multilib_exclusions
),
1213 INIT_STATIC_SPEC ("multilib_options", &multilib_options
),
1214 INIT_STATIC_SPEC ("linker", &linker_name_spec
),
1215 INIT_STATIC_SPEC ("linker_plugin_file", &linker_plugin_file_spec
),
1216 INIT_STATIC_SPEC ("lto_wrapper", <o_wrapper_spec
),
1217 INIT_STATIC_SPEC ("lto_gcc", <o_gcc_spec
),
1218 INIT_STATIC_SPEC ("link_libgcc", &link_libgcc_spec
),
1219 INIT_STATIC_SPEC ("md_exec_prefix", &md_exec_prefix
),
1220 INIT_STATIC_SPEC ("md_startfile_prefix", &md_startfile_prefix
),
1221 INIT_STATIC_SPEC ("md_startfile_prefix_1", &md_startfile_prefix_1
),
1222 INIT_STATIC_SPEC ("startfile_prefix_spec", &startfile_prefix_spec
),
1223 INIT_STATIC_SPEC ("sysroot_spec", &sysroot_spec
),
1224 INIT_STATIC_SPEC ("sysroot_suffix_spec", &sysroot_suffix_spec
),
1225 INIT_STATIC_SPEC ("sysroot_hdrs_suffix_spec", &sysroot_hdrs_suffix_spec
),
1226 INIT_STATIC_SPEC ("self_spec", &self_spec
),
1229 #ifdef EXTRA_SPECS /* additional specs needed */
1230 /* Structure to keep track of just the first two args of a spec_list.
1231 That is all that the EXTRA_SPECS macro gives us. */
1234 const char *const name
;
1235 const char *const ptr
;
1238 static const struct spec_list_1 extra_specs_1
[] = { EXTRA_SPECS
};
1239 static struct spec_list
*extra_specs
= (struct spec_list
*) 0;
1242 /* List of dynamically allocates specs that have been defined so far. */
1244 static struct spec_list
*specs
= (struct spec_list
*) 0;
1246 /* List of static spec functions. */
1248 static const struct spec_function static_spec_functions
[] =
1250 { "getenv", getenv_spec_function
},
1251 { "if-exists", if_exists_spec_function
},
1252 { "if-exists-else", if_exists_else_spec_function
},
1253 { "replace-outfile", replace_outfile_spec_function
},
1254 { "remove-outfile", remove_outfile_spec_function
},
1255 { "version-compare", version_compare_spec_function
},
1256 { "include", include_spec_function
},
1257 { "find-file", find_file_spec_function
},
1258 { "find-plugindir", find_plugindir_spec_function
},
1259 { "print-asm-header", print_asm_header_spec_function
},
1260 { "compare-debug-dump-opt", compare_debug_dump_opt_spec_function
},
1261 { "compare-debug-self-opt", compare_debug_self_opt_spec_function
},
1262 { "compare-debug-auxbase-opt", compare_debug_auxbase_opt_spec_function
},
1263 { "pass-through-libs", pass_through_libs_spec_func
},
1264 #ifdef EXTRA_SPEC_FUNCTIONS
1265 EXTRA_SPEC_FUNCTIONS
1270 static int processing_spec_function
;
1272 /* Add appropriate libgcc specs to OBSTACK, taking into account
1273 various permutations of -shared-libgcc, -shared, and such. */
1275 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
1277 #ifndef USE_LD_AS_NEEDED
1278 #define USE_LD_AS_NEEDED 0
1282 init_gcc_specs (struct obstack
*obstack
, const char *shared_name
,
1283 const char *static_name
, const char *eh_name
)
1287 buf
= concat ("%{static|static-libgcc:", static_name
, " ", eh_name
, "}"
1288 "%{!static:%{!static-libgcc:"
1289 #if USE_LD_AS_NEEDED
1290 "%{!shared-libgcc:",
1291 static_name
, " --as-needed ", shared_name
, " --no-as-needed"
1294 shared_name
, "%{!shared: ", static_name
, "}"
1298 "%{!shared-libgcc:", static_name
, " ", eh_name
, "}"
1299 "%{shared-libgcc:", shared_name
, " ", static_name
, "}"
1303 "%{shared-libgcc:", shared_name
, "}"
1304 "%{!shared-libgcc:", static_name
, "}"
1307 "%{shared:", shared_name
, "}"
1312 obstack_grow (obstack
, buf
, strlen (buf
));
1315 #endif /* ENABLE_SHARED_LIBGCC */
1317 /* Initialize the specs lookup routines. */
1322 struct spec_list
*next
= (struct spec_list
*) 0;
1323 struct spec_list
*sl
= (struct spec_list
*) 0;
1327 return; /* Already initialized. */
1330 fnotice (stderr
, "Using built-in specs.\n");
1333 extra_specs
= XCNEWVEC (struct spec_list
, ARRAY_SIZE (extra_specs_1
));
1335 for (i
= ARRAY_SIZE (extra_specs_1
) - 1; i
>= 0; i
--)
1337 sl
= &extra_specs
[i
];
1338 sl
->name
= extra_specs_1
[i
].name
;
1339 sl
->ptr
= extra_specs_1
[i
].ptr
;
1341 sl
->name_len
= strlen (sl
->name
);
1342 sl
->ptr_spec
= &sl
->ptr
;
1347 for (i
= ARRAY_SIZE (static_specs
) - 1; i
>= 0; i
--)
1349 sl
= &static_specs
[i
];
1354 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
1355 /* ??? If neither -shared-libgcc nor --static-libgcc was
1356 seen, then we should be making an educated guess. Some proposed
1357 heuristics for ELF include:
1359 (1) If "-Wl,--export-dynamic", then it's a fair bet that the
1360 program will be doing dynamic loading, which will likely
1361 need the shared libgcc.
1363 (2) If "-ldl", then it's also a fair bet that we're doing
1366 (3) For each ET_DYN we're linking against (either through -lfoo
1367 or /some/path/foo.so), check to see whether it or one of
1368 its dependencies depends on a shared libgcc.
1372 If the runtime is fixed to look for program headers instead
1373 of calling __register_frame_info at all, for each object,
1374 use the shared libgcc if any EH symbol referenced.
1376 If crtstuff is fixed to not invoke __register_frame_info
1377 automatically, for each object, use the shared libgcc if
1378 any non-empty unwind section found.
1380 Doing any of this probably requires invoking an external program to
1381 do the actual object file scanning. */
1383 const char *p
= libgcc_spec
;
1386 /* Transform the extant libgcc_spec into one that uses the shared libgcc
1387 when given the proper command line arguments. */
1390 if (in_sep
&& *p
== '-' && strncmp (p
, "-lgcc", 5) == 0)
1392 init_gcc_specs (&obstack
,
1394 #ifdef USE_LIBUNWIND_EXCEPTIONS
1400 #ifdef USE_LIBUNWIND_EXCEPTIONS
1401 # ifdef HAVE_LD_STATIC_DYNAMIC
1402 " %{!static:" LD_STATIC_OPTION
"} -lunwind"
1403 " %{!static:" LD_DYNAMIC_OPTION
"}"
1413 else if (in_sep
&& *p
== 'l' && strncmp (p
, "libgcc.a%s", 10) == 0)
1415 /* Ug. We don't know shared library extensions. Hope that
1416 systems that use this form don't do shared libraries. */
1417 init_gcc_specs (&obstack
,
1421 #ifdef USE_LIBUNWIND_EXCEPTIONS
1430 obstack_1grow (&obstack
, *p
);
1431 in_sep
= (*p
== ' ');
1436 obstack_1grow (&obstack
, '\0');
1437 libgcc_spec
= XOBFINISH (&obstack
, const char *);
1440 #ifdef USE_AS_TRADITIONAL_FORMAT
1441 /* Prepend "--traditional-format" to whatever asm_spec we had before. */
1443 static const char tf
[] = "--traditional-format ";
1444 obstack_grow (&obstack
, tf
, sizeof(tf
) - 1);
1445 obstack_grow0 (&obstack
, asm_spec
, strlen (asm_spec
));
1446 asm_spec
= XOBFINISH (&obstack
, const char *);
1450 #if defined LINK_EH_SPEC || defined LINK_BUILDID_SPEC || \
1451 defined LINKER_HASH_STYLE
1452 # ifdef LINK_BUILDID_SPEC
1453 /* Prepend LINK_BUILDID_SPEC to whatever link_spec we had before. */
1454 obstack_grow (&obstack
, LINK_BUILDID_SPEC
, sizeof(LINK_BUILDID_SPEC
) - 1);
1456 # ifdef LINK_EH_SPEC
1457 /* Prepend LINK_EH_SPEC to whatever link_spec we had before. */
1458 obstack_grow (&obstack
, LINK_EH_SPEC
, sizeof(LINK_EH_SPEC
) - 1);
1460 # ifdef LINKER_HASH_STYLE
1461 /* Prepend --hash-style=LINKER_HASH_STYLE to whatever link_spec we had
1464 static const char hash_style
[] = "--hash-style=";
1465 obstack_grow (&obstack
, hash_style
, sizeof(hash_style
) - 1);
1466 obstack_grow (&obstack
, LINKER_HASH_STYLE
, sizeof(LINKER_HASH_STYLE
) - 1);
1467 obstack_1grow (&obstack
, ' ');
1470 obstack_grow0 (&obstack
, link_spec
, strlen (link_spec
));
1471 link_spec
= XOBFINISH (&obstack
, const char *);
1477 /* Change the value of spec NAME to SPEC. If SPEC is empty, then the spec is
1478 removed; If the spec starts with a + then SPEC is added to the end of the
1482 set_spec (const char *name
, const char *spec
)
1484 struct spec_list
*sl
;
1485 const char *old_spec
;
1486 int name_len
= strlen (name
);
1489 /* If this is the first call, initialize the statically allocated specs. */
1492 struct spec_list
*next
= (struct spec_list
*) 0;
1493 for (i
= ARRAY_SIZE (static_specs
) - 1; i
>= 0; i
--)
1495 sl
= &static_specs
[i
];
1502 /* See if the spec already exists. */
1503 for (sl
= specs
; sl
; sl
= sl
->next
)
1504 if (name_len
== sl
->name_len
&& !strcmp (sl
->name
, name
))
1509 /* Not found - make it. */
1510 sl
= XNEW (struct spec_list
);
1511 sl
->name
= xstrdup (name
);
1512 sl
->name_len
= name_len
;
1513 sl
->ptr_spec
= &sl
->ptr
;
1515 *(sl
->ptr_spec
) = "";
1520 old_spec
= *(sl
->ptr_spec
);
1521 *(sl
->ptr_spec
) = ((spec
[0] == '+' && ISSPACE ((unsigned char)spec
[1]))
1522 ? concat (old_spec
, spec
+ 1, NULL
)
1527 fnotice (stderr
, "Setting spec %s to '%s'\n\n", name
, *(sl
->ptr_spec
));
1530 /* Free the old spec. */
1531 if (old_spec
&& sl
->alloc_p
)
1532 free (CONST_CAST(char *, old_spec
));
1537 /* Accumulate a command (program name and args), and run it. */
1539 typedef const char *const_char_p
; /* For DEF_VEC_P. */
1540 DEF_VEC_P(const_char_p
);
1541 DEF_VEC_ALLOC_P(const_char_p
,heap
);
1543 /* Vector of pointers to arguments in the current line of specifications. */
1545 static VEC(const_char_p
,heap
) *argbuf
;
1547 /* Position in the argbuf vector containing the name of the output file
1548 (the value associated with the "-o" flag). */
1550 static int have_o_argbuf_index
= 0;
1552 /* Were the options -c, -S or -E passed. */
1553 static int have_c
= 0;
1555 /* Was the option -o passed. */
1556 static int have_o
= 0;
1558 /* This is the list of suffixes and codes (%g/%u/%U/%j) and the associated
1559 temp file. If the HOST_BIT_BUCKET is used for %j, no entry is made for
1562 static struct temp_name
{
1563 const char *suffix
; /* suffix associated with the code. */
1564 int length
; /* strlen (suffix). */
1565 int unique
; /* Indicates whether %g or %u/%U was used. */
1566 const char *filename
; /* associated filename. */
1567 int filename_length
; /* strlen (filename). */
1568 struct temp_name
*next
;
1571 /* Number of commands executed so far. */
1573 static int execution_count
;
1575 /* Number of commands that exited with a signal. */
1577 static int signal_count
;
1579 /* Allocate the argument vector. */
1584 argbuf
= VEC_alloc (const_char_p
, heap
, 10);
1587 /* Clear out the vector of arguments (after a command is executed). */
1592 VEC_truncate (const_char_p
, argbuf
, 0);
1595 /* Add one argument to the vector at the end.
1596 This is done when a space is seen or at the end of the line.
1597 If DELETE_ALWAYS is nonzero, the arg is a filename
1598 and the file should be deleted eventually.
1599 If DELETE_FAILURE is nonzero, the arg is a filename
1600 and the file should be deleted if this compilation fails. */
1603 store_arg (const char *arg
, int delete_always
, int delete_failure
)
1605 VEC_safe_push (const_char_p
, heap
, argbuf
, arg
);
1607 if (strcmp (arg
, "-o") == 0)
1608 have_o_argbuf_index
= VEC_length (const_char_p
, argbuf
);
1609 if (delete_always
|| delete_failure
)
1612 /* If the temporary file we should delete is specified as
1613 part of a joined argument extract the filename. */
1615 && (p
= strrchr (arg
, '=')))
1617 record_temp_file (arg
, delete_always
, delete_failure
);
1621 /* Load specs from a file name named FILENAME, replacing occurrences of
1622 various different types of line-endings, \r\n, \n\r and just \r, with
1626 load_specs (const char *filename
)
1630 struct stat statbuf
;
1637 fnotice (stderr
, "Reading specs from %s\n", filename
);
1639 /* Open and stat the file. */
1640 desc
= open (filename
, O_RDONLY
, 0);
1642 pfatal_with_name (filename
);
1643 if (stat (filename
, &statbuf
) < 0)
1644 pfatal_with_name (filename
);
1646 /* Read contents of file into BUFFER. */
1647 buffer
= XNEWVEC (char, statbuf
.st_size
+ 1);
1648 readlen
= read (desc
, buffer
, (unsigned) statbuf
.st_size
);
1650 pfatal_with_name (filename
);
1651 buffer
[readlen
] = 0;
1654 specs
= XNEWVEC (char, readlen
+ 1);
1656 for (buffer_p
= buffer
; buffer_p
&& *buffer_p
; buffer_p
++)
1662 if (buffer_p
> buffer
&& *(buffer_p
- 1) == '\n') /* \n\r */
1664 else if (*(buffer_p
+ 1) == '\n') /* \r\n */
1678 /* Read compilation specs from a file named FILENAME,
1679 replacing the default ones.
1681 A suffix which starts with `*' is a definition for
1682 one of the machine-specific sub-specs. The "suffix" should be
1683 *asm, *cc1, *cpp, *link, *startfile, etc.
1684 The corresponding spec is stored in asm_spec, etc.,
1685 rather than in the `compilers' vector.
1687 Anything invalid in the file is a fatal error. */
1690 read_specs (const char *filename
, int main_p
)
1695 buffer
= load_specs (filename
);
1697 /* Scan BUFFER for specs, putting them in the vector. */
1703 char *in
, *out
, *p1
, *p2
, *p3
;
1705 /* Advance P in BUFFER to the next nonblank nocomment line. */
1706 p
= skip_whitespace (p
);
1710 /* Is this a special command that starts with '%'? */
1711 /* Don't allow this for the main specs file, since it would
1712 encourage people to overwrite it. */
1713 if (*p
== '%' && !main_p
)
1716 while (*p
&& *p
!= '\n')
1722 if (!strncmp (p1
, "%include", sizeof ("%include") - 1)
1723 && (p1
[sizeof "%include" - 1] == ' '
1724 || p1
[sizeof "%include" - 1] == '\t'))
1728 p1
+= sizeof ("%include");
1729 while (*p1
== ' ' || *p1
== '\t')
1732 if (*p1
++ != '<' || p
[-2] != '>')
1733 fatal_error ("specs %%include syntax malformed after "
1735 (long) (p1
- buffer
+ 1));
1738 new_filename
= find_a_file (&startfile_prefixes
, p1
, R_OK
, true);
1739 read_specs (new_filename
? new_filename
: p1
, FALSE
);
1742 else if (!strncmp (p1
, "%include_noerr", sizeof "%include_noerr" - 1)
1743 && (p1
[sizeof "%include_noerr" - 1] == ' '
1744 || p1
[sizeof "%include_noerr" - 1] == '\t'))
1748 p1
+= sizeof "%include_noerr";
1749 while (*p1
== ' ' || *p1
== '\t')
1752 if (*p1
++ != '<' || p
[-2] != '>')
1753 fatal_error ("specs %%include syntax malformed after "
1755 (long) (p1
- buffer
+ 1));
1758 new_filename
= find_a_file (&startfile_prefixes
, p1
, R_OK
, true);
1760 read_specs (new_filename
, FALSE
);
1761 else if (verbose_flag
)
1762 fnotice (stderr
, "could not find specs file %s\n", p1
);
1765 else if (!strncmp (p1
, "%rename", sizeof "%rename" - 1)
1766 && (p1
[sizeof "%rename" - 1] == ' '
1767 || p1
[sizeof "%rename" - 1] == '\t'))
1770 struct spec_list
*sl
;
1771 struct spec_list
*newsl
;
1773 /* Get original name. */
1774 p1
+= sizeof "%rename";
1775 while (*p1
== ' ' || *p1
== '\t')
1778 if (! ISALPHA ((unsigned char) *p1
))
1779 fatal_error ("specs %%rename syntax malformed after "
1781 (long) (p1
- buffer
));
1784 while (*p2
&& !ISSPACE ((unsigned char) *p2
))
1787 if (*p2
!= ' ' && *p2
!= '\t')
1788 fatal_error ("specs %%rename syntax malformed after "
1790 (long) (p2
- buffer
));
1794 while (*p2
== ' ' || *p2
== '\t')
1797 if (! ISALPHA ((unsigned char) *p2
))
1798 fatal_error ("specs %%rename syntax malformed after "
1800 (long) (p2
- buffer
));
1802 /* Get new spec name. */
1804 while (*p3
&& !ISSPACE ((unsigned char) *p3
))
1808 fatal_error ("specs %%rename syntax malformed after "
1810 (long) (p3
- buffer
));
1813 for (sl
= specs
; sl
; sl
= sl
->next
)
1814 if (name_len
== sl
->name_len
&& !strcmp (sl
->name
, p1
))
1818 fatal_error ("specs %s spec was not found to be renamed", p1
);
1820 if (strcmp (p1
, p2
) == 0)
1823 for (newsl
= specs
; newsl
; newsl
= newsl
->next
)
1824 if (strcmp (newsl
->name
, p2
) == 0)
1825 fatal_error ("%s: attempt to rename spec %qs to "
1826 "already defined spec %qs",
1831 fnotice (stderr
, "rename spec %s to %s\n", p1
, p2
);
1833 fnotice (stderr
, "spec is '%s'\n\n", *(sl
->ptr_spec
));
1837 set_spec (p2
, *(sl
->ptr_spec
));
1839 free (CONST_CAST (char *, *(sl
->ptr_spec
)));
1841 *(sl
->ptr_spec
) = "";
1846 fatal_error ("specs unknown %% command after %ld characters",
1847 (long) (p1
- buffer
));
1850 /* Find the colon that should end the suffix. */
1852 while (*p1
&& *p1
!= ':' && *p1
!= '\n')
1855 /* The colon shouldn't be missing. */
1857 fatal_error ("specs file malformed after %ld characters",
1858 (long) (p1
- buffer
));
1860 /* Skip back over trailing whitespace. */
1862 while (p2
> buffer
&& (p2
[-1] == ' ' || p2
[-1] == '\t'))
1865 /* Copy the suffix to a string. */
1866 suffix
= save_string (p
, p2
- p
);
1867 /* Find the next line. */
1868 p
= skip_whitespace (p1
+ 1);
1870 fatal_error ("specs file malformed after %ld characters",
1871 (long) (p
- buffer
));
1874 /* Find next blank line or end of string. */
1875 while (*p1
&& !(*p1
== '\n' && (p1
[1] == '\n' || p1
[1] == '\0')))
1878 /* Specs end at the blank line and do not include the newline. */
1879 spec
= save_string (p
, p1
- p
);
1882 /* Delete backslash-newline sequences from the spec. */
1887 if (in
[0] == '\\' && in
[1] == '\n')
1889 else if (in
[0] == '#')
1890 while (*in
&& *in
!= '\n')
1898 if (suffix
[0] == '*')
1900 if (! strcmp (suffix
, "*link_command"))
1901 link_command_spec
= spec
;
1903 set_spec (suffix
+ 1, spec
);
1907 /* Add this pair to the vector. */
1909 = XRESIZEVEC (struct compiler
, compilers
, n_compilers
+ 2);
1911 compilers
[n_compilers
].suffix
= suffix
;
1912 compilers
[n_compilers
].spec
= spec
;
1914 memset (&compilers
[n_compilers
], 0, sizeof compilers
[n_compilers
]);
1918 link_command_spec
= spec
;
1921 if (link_command_spec
== 0)
1922 fatal_error ("spec file has no spec for linking");
1925 /* Record the names of temporary files we tell compilers to write,
1926 and delete them at the end of the run. */
1928 /* This is the common prefix we use to make temp file names.
1929 It is chosen once for each run of this program.
1930 It is substituted into a spec by %g or %j.
1931 Thus, all temp file names contain this prefix.
1932 In practice, all temp file names start with this prefix.
1934 This prefix comes from the envvar TMPDIR if it is defined;
1935 otherwise, from the P_tmpdir macro if that is defined;
1936 otherwise, in /usr/tmp or /tmp;
1937 or finally the current directory if all else fails. */
1939 static const char *temp_filename
;
1941 /* Length of the prefix. */
1943 static int temp_filename_length
;
1945 /* Define the list of temporary files to delete. */
1950 struct temp_file
*next
;
1953 /* Queue of files to delete on success or failure of compilation. */
1954 static struct temp_file
*always_delete_queue
;
1955 /* Queue of files to delete on failure of compilation. */
1956 static struct temp_file
*failure_delete_queue
;
1958 /* Record FILENAME as a file to be deleted automatically.
1959 ALWAYS_DELETE nonzero means delete it if all compilation succeeds;
1960 otherwise delete it in any case.
1961 FAIL_DELETE nonzero means delete it if a compilation step fails;
1962 otherwise delete it in any case. */
1965 record_temp_file (const char *filename
, int always_delete
, int fail_delete
)
1967 char *const name
= xstrdup (filename
);
1971 struct temp_file
*temp
;
1972 for (temp
= always_delete_queue
; temp
; temp
= temp
->next
)
1973 if (! filename_cmp (name
, temp
->name
))
1976 temp
= XNEW (struct temp_file
);
1977 temp
->next
= always_delete_queue
;
1979 always_delete_queue
= temp
;
1986 struct temp_file
*temp
;
1987 for (temp
= failure_delete_queue
; temp
; temp
= temp
->next
)
1988 if (! filename_cmp (name
, temp
->name
))
1991 temp
= XNEW (struct temp_file
);
1992 temp
->next
= failure_delete_queue
;
1994 failure_delete_queue
= temp
;
2000 /* Delete all the temporary files whose names we previously recorded. */
2002 #ifndef DELETE_IF_ORDINARY
2003 #define DELETE_IF_ORDINARY(NAME,ST,VERBOSE_FLAG) \
2006 if (stat (NAME, &ST) >= 0 && S_ISREG (ST.st_mode)) \
2007 if (unlink (NAME) < 0) \
2009 perror_with_name (NAME); \
2014 delete_if_ordinary (const char *name
)
2020 printf ("Delete %s? (y or n) ", name
);
2024 while ((c
= getchar ()) != '\n' && c
!= EOF
)
2027 if (i
== 'y' || i
== 'Y')
2029 DELETE_IF_ORDINARY (name
, st
, verbose_flag
);
2033 delete_temp_files (void)
2035 struct temp_file
*temp
;
2037 for (temp
= always_delete_queue
; temp
; temp
= temp
->next
)
2038 delete_if_ordinary (temp
->name
);
2039 always_delete_queue
= 0;
2042 /* Delete all the files to be deleted on error. */
2045 delete_failure_queue (void)
2047 struct temp_file
*temp
;
2049 for (temp
= failure_delete_queue
; temp
; temp
= temp
->next
)
2050 delete_if_ordinary (temp
->name
);
2054 clear_failure_queue (void)
2056 failure_delete_queue
= 0;
2059 /* Call CALLBACK for each path in PATHS, breaking out early if CALLBACK
2061 If DO_MULTI is true iterate over the paths twice, first with multilib
2062 suffix then without, otherwise iterate over the paths once without
2063 adding a multilib suffix. When DO_MULTI is true, some attempt is made
2064 to avoid visiting the same path twice, but we could do better. For
2065 instance, /usr/lib/../lib is considered different from /usr/lib.
2066 At least EXTRA_SPACE chars past the end of the path passed to
2067 CALLBACK are available for use by the callback.
2068 CALLBACK_INFO allows extra parameters to be passed to CALLBACK.
2070 Returns the value returned by CALLBACK. */
2073 for_each_path (const struct path_prefix
*paths
,
2076 void *(*callback
) (char *, void *),
2077 void *callback_info
)
2079 struct prefix_list
*pl
;
2080 const char *multi_dir
= NULL
;
2081 const char *multi_os_dir
= NULL
;
2082 const char *multi_suffix
;
2083 const char *just_multi_suffix
;
2086 bool skip_multi_dir
= false;
2087 bool skip_multi_os_dir
= false;
2089 multi_suffix
= machine_suffix
;
2090 just_multi_suffix
= just_machine_suffix
;
2091 if (do_multi
&& multilib_dir
&& strcmp (multilib_dir
, ".") != 0)
2093 multi_dir
= concat (multilib_dir
, dir_separator_str
, NULL
);
2094 multi_suffix
= concat (multi_suffix
, multi_dir
, NULL
);
2095 just_multi_suffix
= concat (just_multi_suffix
, multi_dir
, NULL
);
2097 if (do_multi
&& multilib_os_dir
&& strcmp (multilib_os_dir
, ".") != 0)
2098 multi_os_dir
= concat (multilib_os_dir
, dir_separator_str
, NULL
);
2102 size_t multi_dir_len
= 0;
2103 size_t multi_os_dir_len
= 0;
2105 size_t just_suffix_len
;
2109 multi_dir_len
= strlen (multi_dir
);
2111 multi_os_dir_len
= strlen (multi_os_dir
);
2112 suffix_len
= strlen (multi_suffix
);
2113 just_suffix_len
= strlen (just_multi_suffix
);
2117 len
= paths
->max_len
+ extra_space
+ 1;
2118 if (suffix_len
> multi_os_dir_len
)
2121 len
+= multi_os_dir_len
;
2122 path
= XNEWVEC (char, len
);
2125 for (pl
= paths
->plist
; pl
!= 0; pl
= pl
->next
)
2127 len
= strlen (pl
->prefix
);
2128 memcpy (path
, pl
->prefix
, len
);
2130 /* Look first in MACHINE/VERSION subdirectory. */
2131 if (!skip_multi_dir
)
2133 memcpy (path
+ len
, multi_suffix
, suffix_len
+ 1);
2134 ret
= callback (path
, callback_info
);
2139 /* Some paths are tried with just the machine (ie. target)
2140 subdir. This is used for finding as, ld, etc. */
2142 && pl
->require_machine_suffix
== 2)
2144 memcpy (path
+ len
, just_multi_suffix
, just_suffix_len
+ 1);
2145 ret
= callback (path
, callback_info
);
2150 /* Now try the base path. */
2151 if (!pl
->require_machine_suffix
2152 && !(pl
->os_multilib
? skip_multi_os_dir
: skip_multi_dir
))
2154 const char *this_multi
;
2155 size_t this_multi_len
;
2157 if (pl
->os_multilib
)
2159 this_multi
= multi_os_dir
;
2160 this_multi_len
= multi_os_dir_len
;
2164 this_multi
= multi_dir
;
2165 this_multi_len
= multi_dir_len
;
2169 memcpy (path
+ len
, this_multi
, this_multi_len
+ 1);
2173 ret
= callback (path
, callback_info
);
2181 if (multi_dir
== NULL
&& multi_os_dir
== NULL
)
2184 /* Run through the paths again, this time without multilibs.
2185 Don't repeat any we have already seen. */
2188 free (CONST_CAST (char *, multi_dir
));
2190 free (CONST_CAST (char *, multi_suffix
));
2191 multi_suffix
= machine_suffix
;
2192 free (CONST_CAST (char *, just_multi_suffix
));
2193 just_multi_suffix
= just_machine_suffix
;
2196 skip_multi_dir
= true;
2199 free (CONST_CAST (char *, multi_os_dir
));
2200 multi_os_dir
= NULL
;
2203 skip_multi_os_dir
= true;
2208 free (CONST_CAST (char *, multi_dir
));
2209 free (CONST_CAST (char *, multi_suffix
));
2210 free (CONST_CAST (char *, just_multi_suffix
));
2213 free (CONST_CAST (char *, multi_os_dir
));
2219 /* Callback for build_search_list. Adds path to obstack being built. */
2221 struct add_to_obstack_info
{
2228 add_to_obstack (char *path
, void *data
)
2230 struct add_to_obstack_info
*info
= (struct add_to_obstack_info
*) data
;
2232 if (info
->check_dir
&& !is_directory (path
, false))
2235 if (!info
->first_time
)
2236 obstack_1grow (info
->ob
, PATH_SEPARATOR
);
2238 obstack_grow (info
->ob
, path
, strlen (path
));
2240 info
->first_time
= false;
2244 /* Add or change the value of an environment variable, outputting the
2245 change to standard error if in verbose mode. */
2247 xputenv (const char *string
)
2250 fnotice (stderr
, "%s\n", string
);
2251 putenv (CONST_CAST (char *, string
));
2254 /* Build a list of search directories from PATHS.
2255 PREFIX is a string to prepend to the list.
2256 If CHECK_DIR_P is true we ensure the directory exists.
2257 If DO_MULTI is true, multilib paths are output first, then
2259 This is used mostly by putenv_from_prefixes so we use `collect_obstack'.
2260 It is also used by the --print-search-dirs flag. */
2263 build_search_list (const struct path_prefix
*paths
, const char *prefix
,
2264 bool check_dir
, bool do_multi
)
2266 struct add_to_obstack_info info
;
2268 info
.ob
= &collect_obstack
;
2269 info
.check_dir
= check_dir
;
2270 info
.first_time
= true;
2272 obstack_grow (&collect_obstack
, prefix
, strlen (prefix
));
2273 obstack_1grow (&collect_obstack
, '=');
2275 for_each_path (paths
, do_multi
, 0, add_to_obstack
, &info
);
2277 obstack_1grow (&collect_obstack
, '\0');
2278 return XOBFINISH (&collect_obstack
, char *);
2281 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
2285 putenv_from_prefixes (const struct path_prefix
*paths
, const char *env_var
,
2288 xputenv (build_search_list (paths
, env_var
, true, do_multi
));
2291 /* Check whether NAME can be accessed in MODE. This is like access,
2292 except that it never considers directories to be executable. */
2295 access_check (const char *name
, int mode
)
2301 if (stat (name
, &st
) < 0
2302 || S_ISDIR (st
.st_mode
))
2306 return access (name
, mode
);
2309 /* Callback for find_a_file. Appends the file name to the directory
2310 path. If the resulting file exists in the right mode, return the
2311 full pathname to the file. */
2313 struct file_at_path_info
{
2322 file_at_path (char *path
, void *data
)
2324 struct file_at_path_info
*info
= (struct file_at_path_info
*) data
;
2325 size_t len
= strlen (path
);
2327 memcpy (path
+ len
, info
->name
, info
->name_len
);
2328 len
+= info
->name_len
;
2330 /* Some systems have a suffix for executable files.
2331 So try appending that first. */
2332 if (info
->suffix_len
)
2334 memcpy (path
+ len
, info
->suffix
, info
->suffix_len
+ 1);
2335 if (access_check (path
, info
->mode
) == 0)
2340 if (access_check (path
, info
->mode
) == 0)
2346 /* Search for NAME using the prefix list PREFIXES. MODE is passed to
2347 access to check permissions. If DO_MULTI is true, search multilib
2348 paths then non-multilib paths, otherwise do not search multilib paths.
2349 Return 0 if not found, otherwise return its name, allocated with malloc. */
2352 find_a_file (const struct path_prefix
*pprefix
, const char *name
, int mode
,
2355 struct file_at_path_info info
;
2357 #ifdef DEFAULT_ASSEMBLER
2358 if (! strcmp (name
, "as") && access (DEFAULT_ASSEMBLER
, mode
) == 0)
2359 return xstrdup (DEFAULT_ASSEMBLER
);
2362 #ifdef DEFAULT_LINKER
2363 if (! strcmp(name
, "ld") && access (DEFAULT_LINKER
, mode
) == 0)
2364 return xstrdup (DEFAULT_LINKER
);
2367 /* Determine the filename to execute (special case for absolute paths). */
2369 if (IS_ABSOLUTE_PATH (name
))
2371 if (access (name
, mode
) == 0)
2372 return xstrdup (name
);
2378 info
.suffix
= (mode
& X_OK
) != 0 ? HOST_EXECUTABLE_SUFFIX
: "";
2379 info
.name_len
= strlen (info
.name
);
2380 info
.suffix_len
= strlen (info
.suffix
);
2383 return (char*) for_each_path (pprefix
, do_multi
,
2384 info
.name_len
+ info
.suffix_len
,
2385 file_at_path
, &info
);
2388 /* Ranking of prefixes in the sort list. -B prefixes are put before
2391 enum path_prefix_priority
2393 PREFIX_PRIORITY_B_OPT
,
2394 PREFIX_PRIORITY_LAST
2397 /* Add an entry for PREFIX in PLIST. The PLIST is kept in ascending
2398 order according to PRIORITY. Within each PRIORITY, new entries are
2401 If WARN is nonzero, we will warn if no file is found
2402 through this prefix. WARN should point to an int
2403 which will be set to 1 if this entry is used.
2405 COMPONENT is the value to be passed to update_path.
2407 REQUIRE_MACHINE_SUFFIX is 1 if this prefix can't be used without
2408 the complete value of machine_suffix.
2409 2 means try both machine_suffix and just_machine_suffix. */
2412 add_prefix (struct path_prefix
*pprefix
, const char *prefix
,
2413 const char *component
, /* enum prefix_priority */ int priority
,
2414 int require_machine_suffix
, int os_multilib
)
2416 struct prefix_list
*pl
, **prev
;
2419 for (prev
= &pprefix
->plist
;
2420 (*prev
) != NULL
&& (*prev
)->priority
<= priority
;
2421 prev
= &(*prev
)->next
)
2424 /* Keep track of the longest prefix. */
2426 prefix
= update_path (prefix
, component
);
2427 len
= strlen (prefix
);
2428 if (len
> pprefix
->max_len
)
2429 pprefix
->max_len
= len
;
2431 pl
= XNEW (struct prefix_list
);
2432 pl
->prefix
= prefix
;
2433 pl
->require_machine_suffix
= require_machine_suffix
;
2434 pl
->priority
= priority
;
2435 pl
->os_multilib
= os_multilib
;
2437 /* Insert after PREV. */
2442 /* Same as add_prefix, but prepending target_system_root to prefix. */
2443 /* The target_system_root prefix has been relocated by gcc_exec_prefix. */
2445 add_sysrooted_prefix (struct path_prefix
*pprefix
, const char *prefix
,
2446 const char *component
,
2447 /* enum prefix_priority */ int priority
,
2448 int require_machine_suffix
, int os_multilib
)
2450 if (!IS_ABSOLUTE_PATH (prefix
))
2451 fatal_error ("system path %qs is not absolute", prefix
);
2453 if (target_system_root
)
2455 char *sysroot_no_trailing_dir_separator
= xstrdup (target_system_root
);
2456 size_t sysroot_len
= strlen (target_system_root
);
2459 && target_system_root
[sysroot_len
- 1] == DIR_SEPARATOR
)
2460 sysroot_no_trailing_dir_separator
[sysroot_len
- 1] = '\0';
2462 if (target_sysroot_suffix
)
2463 prefix
= concat (target_sysroot_suffix
, prefix
, NULL
);
2464 prefix
= concat (sysroot_no_trailing_dir_separator
, prefix
, NULL
);
2465 free (sysroot_no_trailing_dir_separator
);
2467 /* We have to override this because GCC's notion of sysroot
2468 moves along with GCC. */
2472 add_prefix (pprefix
, prefix
, component
, priority
,
2473 require_machine_suffix
, os_multilib
);
2476 /* Execute the command specified by the arguments on the current line of spec.
2477 When using pipes, this includes several piped-together commands
2478 with `|' between them.
2480 Return 0 if successful, -1 if failed. */
2486 int n_commands
; /* # of command. */
2488 struct pex_obj
*pex
;
2491 const char *prog
; /* program name. */
2492 const char **argv
; /* vector of args. */
2496 struct command
*commands
; /* each command buffer with above info. */
2498 gcc_assert (!processing_spec_function
);
2502 string
= find_a_file (&exec_prefixes
,
2503 VEC_index (const_char_p
, argbuf
, 0), X_OK
, false);
2505 VEC_replace (const_char_p
, argbuf
, 0, string
);
2506 insert_wrapper (wrapper_string
);
2509 /* Count # of piped commands. */
2510 for (n_commands
= 1, i
= 0; VEC_iterate (const_char_p
, argbuf
, i
, arg
); i
++)
2511 if (strcmp (arg
, "|") == 0)
2514 /* Get storage for each command. */
2515 commands
= (struct command
*) alloca (n_commands
* sizeof (struct command
));
2517 /* Split argbuf into its separate piped processes,
2518 and record info about each one.
2519 Also search for the programs that are to be run. */
2521 VEC_safe_push (const_char_p
, heap
, argbuf
, 0);
2523 commands
[0].prog
= VEC_index (const_char_p
, argbuf
, 0); /* first command. */
2524 commands
[0].argv
= VEC_address (const_char_p
, argbuf
);
2526 if (!wrapper_string
)
2528 string
= find_a_file (&exec_prefixes
, commands
[0].prog
, X_OK
, false);
2529 commands
[0].argv
[0] = (string
) ? string
: commands
[0].argv
[0];
2532 for (n_commands
= 1, i
= 0; VEC_iterate (const_char_p
, argbuf
, i
, arg
); i
++)
2533 if (arg
&& strcmp (arg
, "|") == 0)
2534 { /* each command. */
2535 #if defined (__MSDOS__) || defined (OS2) || defined (VMS)
2536 fatal_error ("-pipe not supported");
2538 VEC_replace (const_char_p
, argbuf
, i
, 0); /* Termination of
2540 commands
[n_commands
].prog
= VEC_index (const_char_p
, argbuf
, i
+ 1);
2541 commands
[n_commands
].argv
2542 = &(VEC_address (const_char_p
, argbuf
))[i
+ 1];
2543 string
= find_a_file (&exec_prefixes
, commands
[n_commands
].prog
,
2546 commands
[n_commands
].argv
[0] = string
;
2550 /* If -v, print what we are about to do, and maybe query. */
2554 /* For help listings, put a blank line between sub-processes. */
2555 if (print_help_list
)
2556 fputc ('\n', stderr
);
2558 /* Print each piped command as a separate line. */
2559 for (i
= 0; i
< n_commands
; i
++)
2561 const char *const *j
;
2563 if (verbose_only_flag
)
2565 for (j
= commands
[i
].argv
; *j
; j
++)
2568 for (p
= *j
; *p
; ++p
)
2569 if (!ISALNUM ((unsigned char) *p
)
2570 && *p
!= '_' && *p
!= '/' && *p
!= '-' && *p
!= '.')
2574 fprintf (stderr
, " \"");
2575 for (p
= *j
; *p
; ++p
)
2577 if (*p
== '"' || *p
== '\\' || *p
== '$')
2578 fputc ('\\', stderr
);
2581 fputc ('"', stderr
);
2583 /* If it's empty, print "". */
2585 fprintf (stderr
, " \"\"");
2587 fprintf (stderr
, " %s", *j
);
2591 for (j
= commands
[i
].argv
; *j
; j
++)
2592 /* If it's empty, print "". */
2594 fprintf (stderr
, " \"\"");
2596 fprintf (stderr
, " %s", *j
);
2598 /* Print a pipe symbol after all but the last command. */
2599 if (i
+ 1 != n_commands
)
2600 fprintf (stderr
, " |");
2601 fprintf (stderr
, "\n");
2604 if (verbose_only_flag
!= 0)
2606 /* verbose_only_flag should act as if the spec was
2607 executed, so increment execution_count before
2608 returning. This prevents spurious warnings about
2609 unused linker input files, etc. */
2614 fnotice (stderr
, "\nGo ahead? (y or n) ");
2618 while (getchar () != '\n')
2621 if (i
!= 'y' && i
!= 'Y')
2626 #ifdef ENABLE_VALGRIND_CHECKING
2627 /* Run the each command through valgrind. To simplify prepending the
2628 path to valgrind and the option "-q" (for quiet operation unless
2629 something triggers), we allocate a separate argv array. */
2631 for (i
= 0; i
< n_commands
; i
++)
2637 for (argc
= 0; commands
[i
].argv
[argc
] != NULL
; argc
++)
2640 argv
= XALLOCAVEC (const char *, argc
+ 3);
2642 argv
[0] = VALGRIND_PATH
;
2644 for (j
= 2; j
< argc
+ 2; j
++)
2645 argv
[j
] = commands
[i
].argv
[j
- 2];
2648 commands
[i
].argv
= argv
;
2649 commands
[i
].prog
= argv
[0];
2653 /* Run each piped subprocess. */
2655 pex
= pex_init (PEX_USE_PIPES
| ((report_times
|| report_times_to_file
)
2656 ? PEX_RECORD_TIMES
: 0),
2657 progname
, temp_filename
);
2659 fatal_error ("pex_init failed: %m");
2661 for (i
= 0; i
< n_commands
; i
++)
2665 const char *string
= commands
[i
].argv
[0];
2667 errmsg
= pex_run (pex
,
2668 ((i
+ 1 == n_commands
? PEX_LAST
: 0)
2669 | (string
== commands
[i
].prog
? PEX_SEARCH
: 0)),
2670 string
, CONST_CAST (char **, commands
[i
].argv
),
2675 fatal_error (errmsg
);
2679 pfatal_with_name (errmsg
);
2683 if (string
!= commands
[i
].prog
)
2684 free (CONST_CAST (char *, string
));
2689 /* Wait for all the subprocesses to finish. */
2693 struct pex_time
*times
= NULL
;
2696 statuses
= (int *) alloca (n_commands
* sizeof (int));
2697 if (!pex_get_status (pex
, n_commands
, statuses
))
2698 fatal_error ("failed to get exit status: %m");
2700 if (report_times
|| report_times_to_file
)
2702 times
= (struct pex_time
*) alloca (n_commands
* sizeof (struct pex_time
));
2703 if (!pex_get_times (pex
, n_commands
, times
))
2704 fatal_error ("failed to get process times: %m");
2709 for (i
= 0; i
< n_commands
; ++i
)
2711 int status
= statuses
[i
];
2713 if (WIFSIGNALED (status
))
2716 /* SIGPIPE is a special case. It happens in -pipe mode
2717 when the compiler dies before the preprocessor is done,
2718 or the assembler dies before the compiler is done.
2719 There's generally been an error already, and this is
2720 just fallout. So don't generate another error unless
2721 we would otherwise have succeeded. */
2722 if (WTERMSIG (status
) == SIGPIPE
2723 && (signal_count
|| greatest_status
>= MIN_FATAL_STATUS
))
2730 internal_error ("%s (program %s)",
2731 strsignal (WTERMSIG (status
)), commands
[i
].prog
);
2733 else if (WIFEXITED (status
)
2734 && WEXITSTATUS (status
) >= MIN_FATAL_STATUS
)
2736 if (WEXITSTATUS (status
) > greatest_status
)
2737 greatest_status
= WEXITSTATUS (status
);
2741 if (report_times
|| report_times_to_file
)
2743 struct pex_time
*pt
= ×
[i
];
2746 ut
= ((double) pt
->user_seconds
2747 + (double) pt
->user_microseconds
/ 1.0e6
);
2748 st
= ((double) pt
->system_seconds
2749 + (double) pt
->system_microseconds
/ 1.0e6
);
2754 fnotice (stderr
, "# %s %.2f %.2f\n",
2755 commands
[i
].prog
, ut
, st
);
2757 if (report_times_to_file
)
2760 const char *const *j
;
2762 fprintf (report_times_to_file
, "%g %g", ut
, st
);
2764 for (j
= &commands
[i
].prog
; *j
; j
= &commands
[i
].argv
[++c
])
2767 for (p
= *j
; *p
; ++p
)
2768 if (*p
== '"' || *p
== '\\' || *p
== '$'
2774 fprintf (report_times_to_file
, " \"");
2775 for (p
= *j
; *p
; ++p
)
2777 if (*p
== '"' || *p
== '\\' || *p
== '$')
2778 fputc ('\\', report_times_to_file
);
2779 fputc (*p
, report_times_to_file
);
2781 fputc ('"', report_times_to_file
);
2784 fprintf (report_times_to_file
, " %s", *j
);
2787 fputc ('\n', report_times_to_file
);
2797 /* Find all the switches given to us
2798 and make a vector describing them.
2799 The elements of the vector are strings, one per switch given.
2800 If a switch uses following arguments, then the `part1' field
2801 is the switch itself and the `args' field
2802 is a null-terminated vector containing the following arguments.
2803 Bits in the `live_cond' field are:
2804 SWITCH_LIVE to indicate this switch is true in a conditional spec.
2805 SWITCH_FALSE to indicate this switch is overridden by a later switch.
2806 SWITCH_IGNORE to indicate this switch should be ignored (used in %<S).
2807 SWITCH_IGNORE_PERMANENTLY to indicate this switch should be ignored
2808 in all do_spec calls afterwards. Used for %<S from self specs.
2809 The `validated' field is nonzero if any spec has looked at this switch;
2810 if it remains zero at the end of the run, it must be meaningless. */
2812 #define SWITCH_LIVE (1 << 0)
2813 #define SWITCH_FALSE (1 << 1)
2814 #define SWITCH_IGNORE (1 << 2)
2815 #define SWITCH_IGNORE_PERMANENTLY (1 << 3)
2816 #define SWITCH_KEEP_FOR_GCC (1 << 4)
2822 unsigned int live_cond
;
2823 unsigned char validated
;
2824 unsigned char ordering
;
2827 static struct switchstr
*switches
;
2829 static int n_switches
;
2831 static int n_switches_alloc
;
2833 /* Set to zero if -fcompare-debug is disabled, positive if it's
2834 enabled and we're running the first compilation, negative if it's
2835 enabled and we're running the second compilation. For most of the
2836 time, it's in the range -1..1, but it can be temporarily set to 2
2837 or 3 to indicate that the -fcompare-debug flags didn't come from
2838 the command-line, but rather from the GCC_COMPARE_DEBUG environment
2839 variable, until a synthesized -fcompare-debug flag is added to the
2843 /* Set to nonzero if we've seen the -fcompare-debug-second flag. */
2844 int compare_debug_second
;
2846 /* Set to the flags that should be passed to the second compilation in
2847 a -fcompare-debug compilation. */
2848 const char *compare_debug_opt
;
2850 static struct switchstr
*switches_debug_check
[2];
2852 static int n_switches_debug_check
[2];
2854 static int n_switches_alloc_debug_check
[2];
2856 static char *debug_check_temp_file
[2];
2858 /* Language is one of three things:
2860 1) The name of a real programming language.
2861 2) NULL, indicating that no one has figured out
2863 3) '*', indicating that the file should be passed
2868 const char *language
;
2869 struct compiler
*incompiler
;
2874 /* Also a vector of input files specified. */
2876 static struct infile
*infiles
;
2880 static int n_infiles_alloc
;
2882 /* True if multiple input files are being compiled to a single
2885 static bool combine_inputs
;
2887 /* This counts the number of libraries added by lang_specific_driver, so that
2888 we can tell if there were any user supplied any files or libraries. */
2890 static int added_libraries
;
2892 /* And a vector of corresponding output files is made up later. */
2894 const char **outfiles
;
2896 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2898 /* Convert NAME to a new name if it is the standard suffix. DO_EXE
2899 is true if we should look for an executable suffix. DO_OBJ
2900 is true if we should look for an object suffix. */
2903 convert_filename (const char *name
, int do_exe ATTRIBUTE_UNUSED
,
2904 int do_obj ATTRIBUTE_UNUSED
)
2906 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2914 len
= strlen (name
);
2916 #ifdef HAVE_TARGET_OBJECT_SUFFIX
2917 /* Convert x.o to x.obj if TARGET_OBJECT_SUFFIX is ".obj". */
2918 if (do_obj
&& len
> 2
2919 && name
[len
- 2] == '.'
2920 && name
[len
- 1] == 'o')
2922 obstack_grow (&obstack
, name
, len
- 2);
2923 obstack_grow0 (&obstack
, TARGET_OBJECT_SUFFIX
, strlen (TARGET_OBJECT_SUFFIX
));
2924 name
= XOBFINISH (&obstack
, const char *);
2928 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2929 /* If there is no filetype, make it the executable suffix (which includes
2930 the "."). But don't get confused if we have just "-o". */
2931 if (! do_exe
|| TARGET_EXECUTABLE_SUFFIX
[0] == 0 || (len
== 2 && name
[0] == '-'))
2934 for (i
= len
- 1; i
>= 0; i
--)
2935 if (IS_DIR_SEPARATOR (name
[i
]))
2938 for (i
++; i
< len
; i
++)
2942 obstack_grow (&obstack
, name
, len
);
2943 obstack_grow0 (&obstack
, TARGET_EXECUTABLE_SUFFIX
,
2944 strlen (TARGET_EXECUTABLE_SUFFIX
));
2945 name
= XOBFINISH (&obstack
, const char *);
2952 /* Display the command line switches accepted by gcc. */
2956 printf (_("Usage: %s [options] file...\n"), progname
);
2957 fputs (_("Options:\n"), stdout
);
2959 fputs (_(" -pass-exit-codes Exit with highest error code from a phase\n"), stdout
);
2960 fputs (_(" --help Display this information\n"), stdout
);
2961 fputs (_(" --target-help Display target specific command line options\n"), stdout
);
2962 fputs (_(" --help={common|optimizers|params|target|warnings|[^]{joined|separate|undocumented}}[,...]\n"), stdout
);
2963 fputs (_(" Display specific types of command line options\n"), stdout
);
2965 fputs (_(" (Use '-v --help' to display command line options of sub-processes)\n"), stdout
);
2966 fputs (_(" --version Display compiler version information\n"), stdout
);
2967 fputs (_(" -dumpspecs Display all of the built in spec strings\n"), stdout
);
2968 fputs (_(" -dumpversion Display the version of the compiler\n"), stdout
);
2969 fputs (_(" -dumpmachine Display the compiler's target processor\n"), stdout
);
2970 fputs (_(" -print-search-dirs Display the directories in the compiler's search path\n"), stdout
);
2971 fputs (_(" -print-libgcc-file-name Display the name of the compiler's companion library\n"), stdout
);
2972 fputs (_(" -print-file-name=<lib> Display the full path to library <lib>\n"), stdout
);
2973 fputs (_(" -print-prog-name=<prog> Display the full path to compiler component <prog>\n"), stdout
);
2974 fputs (_(" -print-multi-directory Display the root directory for versions of libgcc\n"), stdout
);
2976 -print-multi-lib Display the mapping between command line options and\n\
2977 multiple library search directories\n"), stdout
);
2978 fputs (_(" -print-multi-os-directory Display the relative path to OS libraries\n"), stdout
);
2979 fputs (_(" -print-sysroot Display the target libraries directory\n"), stdout
);
2980 fputs (_(" -print-sysroot-headers-suffix Display the sysroot suffix used to find headers\n"), stdout
);
2981 fputs (_(" -Wa,<options> Pass comma-separated <options> on to the assembler\n"), stdout
);
2982 fputs (_(" -Wp,<options> Pass comma-separated <options> on to the preprocessor\n"), stdout
);
2983 fputs (_(" -Wl,<options> Pass comma-separated <options> on to the linker\n"), stdout
);
2984 fputs (_(" -Xassembler <arg> Pass <arg> on to the assembler\n"), stdout
);
2985 fputs (_(" -Xpreprocessor <arg> Pass <arg> on to the preprocessor\n"), stdout
);
2986 fputs (_(" -Xlinker <arg> Pass <arg> on to the linker\n"), stdout
);
2987 fputs (_(" -save-temps Do not delete intermediate files\n"), stdout
);
2988 fputs (_(" -save-temps=<arg> Do not delete intermediate files\n"), stdout
);
2990 -no-canonical-prefixes Do not canonicalize paths when building relative\n\
2991 prefixes to other gcc components\n"), stdout
);
2992 fputs (_(" -pipe Use pipes rather than intermediate files\n"), stdout
);
2993 fputs (_(" -time Time the execution of each subprocess\n"), stdout
);
2994 fputs (_(" -specs=<file> Override built-in specs with the contents of <file>\n"), stdout
);
2995 fputs (_(" -std=<standard> Assume that the input sources are for <standard>\n"), stdout
);
2997 --sysroot=<directory> Use <directory> as the root directory for headers\n\
2998 and libraries\n"), stdout
);
2999 fputs (_(" -B <directory> Add <directory> to the compiler's search paths\n"), stdout
);
3000 fputs (_(" -v Display the programs invoked by the compiler\n"), stdout
);
3001 fputs (_(" -### Like -v but options quoted and commands not executed\n"), stdout
);
3002 fputs (_(" -E Preprocess only; do not compile, assemble or link\n"), stdout
);
3003 fputs (_(" -S Compile only; do not assemble or link\n"), stdout
);
3004 fputs (_(" -c Compile and assemble, but do not link\n"), stdout
);
3005 fputs (_(" -o <file> Place the output into <file>\n"), stdout
);
3006 fputs (_(" -pie Create a position independent executable\n"), stdout
);
3007 fputs (_(" -shared Create a shared library\n"), stdout
);
3009 -x <language> Specify the language of the following input files\n\
3010 Permissible languages include: c c++ assembler none\n\
3011 'none' means revert to the default behavior of\n\
3012 guessing the language based on the file's extension\n\
3016 \nOptions starting with -g, -f, -m, -O, -W, or --param are automatically\n\
3017 passed on to the various sub-processes invoked by %s. In order to pass\n\
3018 other options on to these processes the -W<letter> options must be used.\n\
3021 /* The rest of the options are displayed by invocations of the various
3026 add_preprocessor_option (const char *option
, int len
)
3028 VEC_safe_push (char_p
, heap
, preprocessor_options
,
3029 save_string (option
, len
));
3033 add_assembler_option (const char *option
, int len
)
3035 VEC_safe_push (char_p
, heap
, assembler_options
, save_string (option
, len
));
3039 add_linker_option (const char *option
, int len
)
3041 VEC_safe_push (char_p
, heap
, linker_options
, save_string (option
, len
));
3044 /* Allocate space for an input file in infiles. */
3049 if (n_infiles_alloc
== 0)
3051 n_infiles_alloc
= 16;
3052 infiles
= XNEWVEC (struct infile
, n_infiles_alloc
);
3054 else if (n_infiles_alloc
== n_infiles
)
3056 n_infiles_alloc
*= 2;
3057 infiles
= XRESIZEVEC (struct infile
, infiles
, n_infiles_alloc
);
3061 /* Store an input file with the given NAME and LANGUAGE in
3065 add_infile (const char *name
, const char *language
)
3068 infiles
[n_infiles
].name
= name
;
3069 infiles
[n_infiles
++].language
= language
;
3072 /* Allocate space for a switch in switches. */
3077 if (n_switches_alloc
== 0)
3079 n_switches_alloc
= 16;
3080 switches
= XNEWVEC (struct switchstr
, n_switches_alloc
);
3082 else if (n_switches_alloc
== n_switches
)
3084 n_switches_alloc
*= 2;
3085 switches
= XRESIZEVEC (struct switchstr
, switches
, n_switches_alloc
);
3089 /* Save an option OPT with N_ARGS arguments in array ARGS, marking it
3090 as validated if VALIDATED. */
3093 save_switch (const char *opt
, size_t n_args
, const char *const *args
,
3097 switches
[n_switches
].part1
= opt
+ 1;
3099 switches
[n_switches
].args
= 0;
3102 switches
[n_switches
].args
= XNEWVEC (const char *, n_args
+ 1);
3103 memcpy (switches
[n_switches
].args
, args
, n_args
* sizeof (const char *));
3104 switches
[n_switches
].args
[n_args
] = NULL
;
3107 switches
[n_switches
].live_cond
= 0;
3108 switches
[n_switches
].validated
= validated
;
3109 switches
[n_switches
].ordering
= 0;
3113 /* Handle an option DECODED that is unknown to the option-processing
3117 driver_unknown_option_callback (const struct cl_decoded_option
*decoded
)
3119 const char *opt
= decoded
->arg
;
3120 if (opt
[1] == 'W' && opt
[2] == 'n' && opt
[3] == 'o' && opt
[4] == '-'
3121 && !(decoded
->errors
& CL_ERR_NEGATIVE
))
3123 /* Leave unknown -Wno-* options for the compiler proper, to be
3124 diagnosed only if there are warnings. */
3125 save_switch (decoded
->canonical_option
[0],
3126 decoded
->canonical_option_num_elements
- 1,
3127 &decoded
->canonical_option
[1], false);
3134 /* Handle an option DECODED that is not marked as CL_DRIVER.
3135 LANG_MASK will always be CL_DRIVER. */
3138 driver_wrong_lang_callback (const struct cl_decoded_option
*decoded
,
3139 unsigned int lang_mask ATTRIBUTE_UNUSED
)
3141 /* At this point, non-driver options are accepted (and expected to
3142 be passed down by specs) unless marked to be rejected by the
3143 driver. Options to be rejected by the driver but accepted by the
3144 compilers proper are treated just like completely unknown
3146 const struct cl_option
*option
= &cl_options
[decoded
->opt_index
];
3148 if (option
->cl_reject_driver
)
3149 error ("unrecognized command line option %qs",
3150 decoded
->orig_option_with_args_text
);
3152 save_switch (decoded
->canonical_option
[0],
3153 decoded
->canonical_option_num_elements
- 1,
3154 &decoded
->canonical_option
[1], false);
3157 static const char *spec_lang
= 0;
3158 static int last_language_n_infiles
;
3160 /* Handle a driver option; arguments and return value as for
3164 driver_handle_option (struct gcc_options
*opts
,
3165 struct gcc_options
*opts_set
,
3166 const struct cl_decoded_option
*decoded
,
3167 unsigned int lang_mask ATTRIBUTE_UNUSED
, int kind
,
3169 const struct cl_option_handlers
*handlers ATTRIBUTE_UNUSED
,
3170 diagnostic_context
*dc
)
3172 size_t opt_index
= decoded
->opt_index
;
3173 const char *arg
= decoded
->arg
;
3174 const char *compare_debug_replacement_opt
;
3175 int value
= decoded
->value
;
3176 bool validated
= false;
3177 bool do_save
= true;
3179 gcc_assert (opts
== &global_options
);
3180 gcc_assert (opts_set
== &global_options_set
);
3181 gcc_assert (kind
== DK_UNSPECIFIED
);
3182 gcc_assert (loc
== UNKNOWN_LOCATION
);
3183 gcc_assert (dc
== global_dc
);
3189 struct spec_list
*sl
;
3191 for (sl
= specs
; sl
; sl
= sl
->next
)
3192 printf ("*%s:\n%s\n\n", sl
->name
, *(sl
->ptr_spec
));
3193 if (link_command_spec
)
3194 printf ("*link_command:\n%s\n\n", link_command_spec
);
3198 case OPT_dumpversion
:
3199 printf ("%s\n", spec_version
);
3202 case OPT_dumpmachine
:
3203 printf ("%s\n", spec_machine
);
3209 /* CPP driver cannot obtain switch from cc1_options. */
3211 add_preprocessor_option ("--version", strlen ("--version"));
3212 add_assembler_option ("--version", strlen ("--version"));
3213 add_linker_option ("--version", strlen ("--version"));
3217 print_help_list
= 1;
3219 /* CPP driver cannot obtain switch from cc1_options. */
3221 add_preprocessor_option ("--help", 6);
3222 add_assembler_option ("--help", 6);
3223 add_linker_option ("--help", 6);
3227 print_subprocess_help
= 2;
3230 case OPT__target_help
:
3231 print_subprocess_help
= 1;
3233 /* CPP driver cannot obtain switch from cc1_options. */
3235 add_preprocessor_option ("--target-help", 13);
3236 add_assembler_option ("--target-help", 13);
3237 add_linker_option ("--target-help", 13);
3240 case OPT_pass_exit_codes
:
3241 case OPT_print_search_dirs
:
3242 case OPT_print_file_name_
:
3243 case OPT_print_prog_name_
:
3244 case OPT_print_multi_lib
:
3245 case OPT_print_multi_directory
:
3246 case OPT_print_sysroot
:
3247 case OPT_print_multi_os_directory
:
3248 case OPT_print_sysroot_headers_suffix
:
3251 /* These options set the variables specified in common.opt
3252 automatically, and do not need to be saved for spec
3257 case OPT_print_libgcc_file_name
:
3258 print_file_name
= "libgcc.a";
3262 case OPT_fcompare_debug_second
:
3263 compare_debug_second
= 1;
3266 case OPT_fcompare_debug
:
3270 compare_debug_replacement_opt
= "-fcompare-debug=";
3272 goto compare_debug_with_arg
;
3275 compare_debug_replacement_opt
= "-fcompare-debug=-gtoggle";
3277 goto compare_debug_with_arg
;
3284 case OPT_fcompare_debug_
:
3285 compare_debug_replacement_opt
= decoded
->canonical_option
[0];
3286 compare_debug_with_arg
:
3287 gcc_assert (decoded
->canonical_option_num_elements
== 1);
3288 gcc_assert (arg
!= NULL
);
3293 if (compare_debug
< 0)
3294 compare_debug_opt
= NULL
;
3296 compare_debug_opt
= arg
;
3297 save_switch (compare_debug_replacement_opt
, 0, NULL
, validated
);
3303 /* Pass the rest of this option to the assembler. */
3305 /* Split the argument at commas. */
3307 for (j
= 0; arg
[j
]; j
++)
3310 add_assembler_option (arg
+ prev
, j
- prev
);
3314 /* Record the part after the last comma. */
3315 add_assembler_option (arg
+ prev
, j
- prev
);
3323 /* Pass the rest of this option to the preprocessor. */
3325 /* Split the argument at commas. */
3327 for (j
= 0; arg
[j
]; j
++)
3330 add_preprocessor_option (arg
+ prev
, j
- prev
);
3334 /* Record the part after the last comma. */
3335 add_preprocessor_option (arg
+ prev
, j
- prev
);
3343 /* Split the argument at commas. */
3345 for (j
= 0; arg
[j
]; j
++)
3348 add_infile (save_string (arg
+ prev
, j
- prev
), "*");
3351 /* Record the part after the last comma. */
3352 add_infile (arg
+ prev
, "*");
3358 add_infile (arg
, "*");
3362 case OPT_Xpreprocessor
:
3363 add_preprocessor_option (arg
, strlen (arg
));
3367 case OPT_Xassembler
:
3368 add_assembler_option (arg
, strlen (arg
));
3373 /* POSIX allows separation of -l and the lib arg; canonicalize
3374 by concatenating -l with its arg */
3375 add_infile (concat ("-l", arg
, NULL
), "*");
3380 /* Similarly, canonicalize -L for linkers that may not accept
3381 separate arguments. */
3382 save_switch (concat ("-L", arg
, NULL
), 0, NULL
, validated
);
3387 save_switch (concat ("-F", arg
, NULL
), 0, NULL
, validated
);
3390 case OPT_save_temps
:
3391 save_temps_flag
= SAVE_TEMPS_CWD
;
3395 case OPT_save_temps_
:
3396 if (strcmp (arg
, "cwd") == 0)
3397 save_temps_flag
= SAVE_TEMPS_CWD
;
3398 else if (strcmp (arg
, "obj") == 0
3399 || strcmp (arg
, "object") == 0)
3400 save_temps_flag
= SAVE_TEMPS_OBJ
;
3402 fatal_error ("%qs is an unknown -save-temps option",
3403 decoded
->orig_option_with_args_text
);
3406 case OPT_no_canonical_prefixes
:
3407 /* Already handled as a special case, so ignored here. */
3413 /* These options set the variables specified in common.opt
3414 automatically, but do need to be saved for spec
3420 struct user_specs
*user
= XNEW (struct user_specs
);
3422 user
->next
= (struct user_specs
*) 0;
3423 user
->filename
= arg
;
3424 if (user_specs_tail
)
3425 user_specs_tail
->next
= user
;
3427 user_specs_head
= user
;
3428 user_specs_tail
= user
;
3434 target_system_root
= arg
;
3435 target_system_root_changed
= 1;
3440 if (report_times_to_file
)
3441 fclose (report_times_to_file
);
3442 report_times_to_file
= fopen (arg
, "a");
3448 This is similar to -v except that there is no execution
3449 of the commands and the echoed arguments are quoted. It
3450 is intended for use in shell scripts to capture the
3451 driver-generated command line. */
3452 verbose_only_flag
++;
3459 size_t len
= strlen (arg
);
3461 /* Catch the case where the user has forgotten to append a
3462 directory separator to the path. Note, they may be using
3463 -B to add an executable name prefix, eg "i386-elf-", in
3464 order to distinguish between multiple installations of
3465 GCC in the same directory. Hence we must check to see
3466 if appending a directory separator actually makes a
3467 valid directory name. */
3468 if (!IS_DIR_SEPARATOR (arg
[len
- 1])
3469 && is_directory (arg
, false))
3471 char *tmp
= XNEWVEC (char, len
+ 2);
3473 tmp
[len
] = DIR_SEPARATOR
;
3478 add_prefix (&exec_prefixes
, arg
, NULL
,
3479 PREFIX_PRIORITY_B_OPT
, 0, 0);
3480 add_prefix (&startfile_prefixes
, arg
, NULL
,
3481 PREFIX_PRIORITY_B_OPT
, 0, 0);
3482 add_prefix (&include_prefixes
, arg
, NULL
,
3483 PREFIX_PRIORITY_B_OPT
, 0, 0);
3490 if (!strcmp (spec_lang
, "none"))
3491 /* Suppress the warning if -xnone comes after the last input
3492 file, because alternate command interfaces like g++ might
3493 find it useful to place -xnone after each input file. */
3496 last_language_n_infiles
= n_infiles
;
3502 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX) || defined(HAVE_TARGET_OBJECT_SUFFIX)
3503 arg
= convert_filename (arg
, ! have_c
, 0);
3505 /* Save the output name in case -save-temps=obj was used. */
3506 save_temps_prefix
= xstrdup (arg
);
3507 /* On some systems, ld cannot handle "-o" without a space. So
3508 split the option from its argument. */
3509 save_switch ("-o", 1, &arg
, validated
);
3512 case OPT_static_libgcc
:
3513 case OPT_shared_libgcc
:
3514 case OPT_static_libgfortran
:
3515 case OPT_static_libstdc__
:
3516 /* These are always valid, since gcc.c itself understands the
3517 first two, gfortranspec.c understands -static-libgfortran and
3518 g++spec.c understands -static-libstdc++ */
3523 /* Various driver options need no special processing at this
3524 point, having been handled in a prescan above or being
3525 handled by specs. */
3530 save_switch (decoded
->canonical_option
[0],
3531 decoded
->canonical_option_num_elements
- 1,
3532 &decoded
->canonical_option
[1], validated
);
3536 /* Put the driver's standard set of option handlers in *HANDLERS. */
3539 set_option_handlers (struct cl_option_handlers
*handlers
)
3541 handlers
->unknown_option_callback
= driver_unknown_option_callback
;
3542 handlers
->wrong_lang_callback
= driver_wrong_lang_callback
;
3543 handlers
->num_handlers
= 3;
3544 handlers
->handlers
[0].handler
= driver_handle_option
;
3545 handlers
->handlers
[0].mask
= CL_DRIVER
;
3546 handlers
->handlers
[1].handler
= common_handle_option
;
3547 handlers
->handlers
[1].mask
= CL_COMMON
;
3548 handlers
->handlers
[2].handler
= target_handle_option
;
3549 handlers
->handlers
[2].mask
= CL_TARGET
;
3552 /* Create the vector `switches' and its contents.
3553 Store its length in `n_switches'. */
3556 process_command (unsigned int decoded_options_count
,
3557 struct cl_decoded_option
*decoded_options
)
3561 const char *tooldir_prefix
;
3562 char *(*get_relative_prefix
) (const char *, const char *,
3563 const char *) = NULL
;
3564 struct cl_option_handlers handlers
;
3567 gcc_exec_prefix
= getenv ("GCC_EXEC_PREFIX");
3571 added_libraries
= 0;
3573 /* Figure compiler version from version string. */
3575 compiler_version
= temp1
= xstrdup (version_string
);
3577 for (; *temp1
; ++temp1
)
3586 /* Handle any -no-canonical-prefixes flag early, to assign the function
3587 that builds relative prefixes. This function creates default search
3588 paths that are needed later in normal option handling. */
3590 for (j
= 1; j
< decoded_options_count
; j
++)
3592 if (decoded_options
[j
].opt_index
== OPT_no_canonical_prefixes
)
3594 get_relative_prefix
= make_relative_prefix_ignore_links
;
3598 if (! get_relative_prefix
)
3599 get_relative_prefix
= make_relative_prefix
;
3601 /* Set up the default search paths. If there is no GCC_EXEC_PREFIX,
3602 see if we can create it from the pathname specified in
3603 decoded_options[0].arg. */
3605 gcc_libexec_prefix
= standard_libexec_prefix
;
3607 /* FIXME: make_relative_prefix doesn't yet work for VMS. */
3608 if (!gcc_exec_prefix
)
3610 gcc_exec_prefix
= get_relative_prefix (decoded_options
[0].arg
,
3611 standard_bindir_prefix
,
3612 standard_exec_prefix
);
3613 gcc_libexec_prefix
= get_relative_prefix (decoded_options
[0].arg
,
3614 standard_bindir_prefix
,
3615 standard_libexec_prefix
);
3616 if (gcc_exec_prefix
)
3617 xputenv (concat ("GCC_EXEC_PREFIX=", gcc_exec_prefix
, NULL
));
3621 /* make_relative_prefix requires a program name, but
3622 GCC_EXEC_PREFIX is typically a directory name with a trailing
3623 / (which is ignored by make_relative_prefix), so append a
3625 char *tmp_prefix
= concat (gcc_exec_prefix
, "gcc", NULL
);
3626 gcc_libexec_prefix
= get_relative_prefix (tmp_prefix
,
3627 standard_exec_prefix
,
3628 standard_libexec_prefix
);
3630 /* The path is unrelocated, so fallback to the original setting. */
3631 if (!gcc_libexec_prefix
)
3632 gcc_libexec_prefix
= standard_libexec_prefix
;
3638 /* From this point onward, gcc_exec_prefix is non-null if the toolchain
3639 is relocated. The toolchain was either relocated using GCC_EXEC_PREFIX
3640 or an automatically created GCC_EXEC_PREFIX from
3641 decoded_options[0].arg. */
3643 /* Do language-specific adjustment/addition of flags. */
3644 lang_specific_driver (&decoded_options
, &decoded_options_count
,
3647 if (gcc_exec_prefix
)
3649 int len
= strlen (gcc_exec_prefix
);
3651 if (len
> (int) sizeof ("/lib/gcc/") - 1
3652 && (IS_DIR_SEPARATOR (gcc_exec_prefix
[len
-1])))
3654 temp
= gcc_exec_prefix
+ len
- sizeof ("/lib/gcc/") + 1;
3655 if (IS_DIR_SEPARATOR (*temp
)
3656 && filename_ncmp (temp
+ 1, "lib", 3) == 0
3657 && IS_DIR_SEPARATOR (temp
[4])
3658 && filename_ncmp (temp
+ 5, "gcc", 3) == 0)
3659 len
-= sizeof ("/lib/gcc/") - 1;
3662 set_std_prefix (gcc_exec_prefix
, len
);
3663 add_prefix (&exec_prefixes
, gcc_libexec_prefix
, "GCC",
3664 PREFIX_PRIORITY_LAST
, 0, 0);
3665 add_prefix (&startfile_prefixes
, gcc_exec_prefix
, "GCC",
3666 PREFIX_PRIORITY_LAST
, 0, 0);
3669 /* COMPILER_PATH and LIBRARY_PATH have values
3670 that are lists of directory names with colons. */
3672 temp
= getenv ("COMPILER_PATH");
3675 const char *startp
, *endp
;
3676 char *nstore
= (char *) alloca (strlen (temp
) + 3);
3678 startp
= endp
= temp
;
3681 if (*endp
== PATH_SEPARATOR
|| *endp
== 0)
3683 strncpy (nstore
, startp
, endp
- startp
);
3685 strcpy (nstore
, concat (".", dir_separator_str
, NULL
));
3686 else if (!IS_DIR_SEPARATOR (endp
[-1]))
3688 nstore
[endp
- startp
] = DIR_SEPARATOR
;
3689 nstore
[endp
- startp
+ 1] = 0;
3692 nstore
[endp
- startp
] = 0;
3693 add_prefix (&exec_prefixes
, nstore
, 0,
3694 PREFIX_PRIORITY_LAST
, 0, 0);
3695 add_prefix (&include_prefixes
, nstore
, 0,
3696 PREFIX_PRIORITY_LAST
, 0, 0);
3699 endp
= startp
= endp
+ 1;
3706 temp
= getenv (LIBRARY_PATH_ENV
);
3707 if (temp
&& *cross_compile
== '0')
3709 const char *startp
, *endp
;
3710 char *nstore
= (char *) alloca (strlen (temp
) + 3);
3712 startp
= endp
= temp
;
3715 if (*endp
== PATH_SEPARATOR
|| *endp
== 0)
3717 strncpy (nstore
, startp
, endp
- startp
);
3719 strcpy (nstore
, concat (".", dir_separator_str
, NULL
));
3720 else if (!IS_DIR_SEPARATOR (endp
[-1]))
3722 nstore
[endp
- startp
] = DIR_SEPARATOR
;
3723 nstore
[endp
- startp
+ 1] = 0;
3726 nstore
[endp
- startp
] = 0;
3727 add_prefix (&startfile_prefixes
, nstore
, NULL
,
3728 PREFIX_PRIORITY_LAST
, 0, 1);
3731 endp
= startp
= endp
+ 1;
3738 /* Use LPATH like LIBRARY_PATH (for the CMU build program). */
3739 temp
= getenv ("LPATH");
3740 if (temp
&& *cross_compile
== '0')
3742 const char *startp
, *endp
;
3743 char *nstore
= (char *) alloca (strlen (temp
) + 3);
3745 startp
= endp
= temp
;
3748 if (*endp
== PATH_SEPARATOR
|| *endp
== 0)
3750 strncpy (nstore
, startp
, endp
- startp
);
3752 strcpy (nstore
, concat (".", dir_separator_str
, NULL
));
3753 else if (!IS_DIR_SEPARATOR (endp
[-1]))
3755 nstore
[endp
- startp
] = DIR_SEPARATOR
;
3756 nstore
[endp
- startp
+ 1] = 0;
3759 nstore
[endp
- startp
] = 0;
3760 add_prefix (&startfile_prefixes
, nstore
, NULL
,
3761 PREFIX_PRIORITY_LAST
, 0, 1);
3764 endp
= startp
= endp
+ 1;
3771 /* Process the options and store input files and switches in their
3774 last_language_n_infiles
= -1;
3776 set_option_handlers (&handlers
);
3778 for (j
= 1; j
< decoded_options_count
; j
++)
3780 switch (decoded_options
[j
].opt_index
)
3792 for (j
= 1; j
< decoded_options_count
; j
++)
3794 if (decoded_options
[j
].opt_index
== OPT_SPECIAL_input_file
)
3796 const char *arg
= decoded_options
[j
].arg
;
3797 const char *p
= strrchr (arg
, '@');
3801 #ifdef HAVE_TARGET_OBJECT_SUFFIX
3802 arg
= convert_filename (arg
, 0, access (arg
, F_OK
));
3804 /* For LTO static archive support we handle input file
3805 specifications that are composed of a filename and
3806 an offset like FNAME@OFFSET. */
3809 && sscanf (p
, "@%li%n", &offset
, &consumed
) >= 1
3810 && strlen (p
) == (unsigned int)consumed
)
3812 fname
= (char *)xmalloc (p
- arg
+ 1);
3813 memcpy (fname
, arg
, p
- arg
);
3814 fname
[p
- arg
] = '\0';
3815 /* Only accept non-stdin and existing FNAME parts, otherwise
3816 try with the full name. */
3817 if (strcmp (fname
, "-") == 0 || access (fname
, F_OK
) < 0)
3820 fname
= xstrdup (arg
);
3824 fname
= xstrdup (arg
);
3826 if (strcmp (fname
, "-") != 0 && access (fname
, F_OK
) < 0)
3827 perror_with_name (fname
);
3829 add_infile (arg
, spec_lang
);
3835 read_cmdline_option (&global_options
, &global_options_set
,
3836 decoded_options
+ j
, UNKNOWN_LOCATION
,
3837 CL_DRIVER
, &handlers
, global_dc
);
3840 /* If -save-temps=obj and -o name, create the prefix to use for %b.
3841 Otherwise just make -save-temps=obj the same as -save-temps=cwd. */
3842 if (save_temps_flag
== SAVE_TEMPS_OBJ
&& save_temps_prefix
!= NULL
)
3844 save_temps_length
= strlen (save_temps_prefix
);
3845 temp
= strrchr (lbasename (save_temps_prefix
), '.');
3848 save_temps_length
-= strlen (temp
);
3849 save_temps_prefix
[save_temps_length
] = '\0';
3853 else if (save_temps_prefix
!= NULL
)
3855 free (save_temps_prefix
);
3856 save_temps_prefix
= NULL
;
3859 if (save_temps_flag
&& use_pipes
)
3861 /* -save-temps overrides -pipe, so that temp files are produced */
3862 if (save_temps_flag
)
3863 warning (0, "-pipe ignored because -save-temps specified");
3869 const char *gcd
= getenv ("GCC_COMPARE_DEBUG");
3871 if (gcd
&& gcd
[0] == '-')
3874 compare_debug_opt
= gcd
;
3876 else if (gcd
&& *gcd
&& strcmp (gcd
, "0"))
3879 compare_debug_opt
= "-gtoggle";
3882 else if (compare_debug
< 0)
3885 gcc_assert (!compare_debug_opt
);
3888 /* Set up the search paths. We add directories that we expect to
3889 contain GNU Toolchain components before directories specified by
3890 the machine description so that we will find GNU components (like
3891 the GNU assembler) before those of the host system. */
3893 /* If we don't know where the toolchain has been installed, use the
3894 configured-in locations. */
3895 if (!gcc_exec_prefix
)
3898 add_prefix (&exec_prefixes
, standard_libexec_prefix
, "GCC",
3899 PREFIX_PRIORITY_LAST
, 1, 0);
3900 add_prefix (&exec_prefixes
, standard_libexec_prefix
, "BINUTILS",
3901 PREFIX_PRIORITY_LAST
, 2, 0);
3902 add_prefix (&exec_prefixes
, standard_exec_prefix
, "BINUTILS",
3903 PREFIX_PRIORITY_LAST
, 2, 0);
3905 add_prefix (&startfile_prefixes
, standard_exec_prefix
, "BINUTILS",
3906 PREFIX_PRIORITY_LAST
, 1, 0);
3909 gcc_assert (!IS_ABSOLUTE_PATH (tooldir_base_prefix
));
3910 tooldir_prefix
= concat (tooldir_base_prefix
, spec_machine
,
3911 dir_separator_str
, NULL
);
3913 /* Look for tools relative to the location from which the driver is
3914 running, or, if that is not available, the configured prefix. */
3916 = concat (gcc_exec_prefix
? gcc_exec_prefix
: standard_exec_prefix
,
3917 spec_machine
, dir_separator_str
,
3918 spec_version
, dir_separator_str
, tooldir_prefix
, NULL
);
3920 add_prefix (&exec_prefixes
,
3921 concat (tooldir_prefix
, "bin", dir_separator_str
, NULL
),
3922 "BINUTILS", PREFIX_PRIORITY_LAST
, 0, 0);
3923 add_prefix (&startfile_prefixes
,
3924 concat (tooldir_prefix
, "lib", dir_separator_str
, NULL
),
3925 "BINUTILS", PREFIX_PRIORITY_LAST
, 0, 1);
3927 #if defined(TARGET_SYSTEM_ROOT_RELOCATABLE) && !defined(VMS)
3928 /* If the normal TARGET_SYSTEM_ROOT is inside of $exec_prefix,
3929 then consider it to relocate with the rest of the GCC installation
3930 if GCC_EXEC_PREFIX is set.
3931 ``make_relative_prefix'' is not compiled for VMS, so don't call it. */
3932 if (target_system_root
&& !target_system_root_changed
&& gcc_exec_prefix
)
3934 char *tmp_prefix
= get_relative_prefix (decoded_options
[0].arg
,
3935 standard_bindir_prefix
,
3936 target_system_root
);
3937 if (tmp_prefix
&& access_check (tmp_prefix
, F_OK
) == 0)
3939 target_system_root
= tmp_prefix
;
3940 target_system_root_changed
= 1;
3945 /* More prefixes are enabled in main, after we read the specs file
3946 and determine whether this is cross-compilation or not. */
3948 if (n_infiles
== last_language_n_infiles
&& spec_lang
!= 0)
3949 warning (0, "%<-x %s%> after last input file has no effect", spec_lang
);
3951 if (compare_debug
== 2 || compare_debug
== 3)
3954 switches
[n_switches
].part1
= concat ("fcompare-debug=",
3957 switches
[n_switches
].args
= 0;
3958 switches
[n_switches
].live_cond
= 0;
3959 switches
[n_switches
].validated
= 0;
3960 switches
[n_switches
].ordering
= 0;
3965 /* Ensure we only invoke each subprocess once. */
3966 if (print_subprocess_help
|| print_help_list
|| print_version
)
3970 /* Create a dummy input file, so that we can pass
3971 the help option on to the various sub-processes. */
3972 add_infile ("help-dummy", "c");
3976 switches
[n_switches
].part1
= 0;
3978 infiles
[n_infiles
].name
= 0;
3981 /* Store switches not filtered out by %<S in spec in COLLECT_GCC_OPTIONS
3982 and place that in the environment. */
3985 set_collect_gcc_options (void)
3990 /* Build COLLECT_GCC_OPTIONS to have all of the options specified to
3992 obstack_grow (&collect_obstack
, "COLLECT_GCC_OPTIONS=",
3993 sizeof ("COLLECT_GCC_OPTIONS=") - 1);
3996 for (i
= 0; (int) i
< n_switches
; i
++)
3998 const char *const *args
;
4001 obstack_grow (&collect_obstack
, " ", 1);
4005 /* Ignore elided switches. */
4006 if ((switches
[i
].live_cond
4007 & (SWITCH_IGNORE
| SWITCH_KEEP_FOR_GCC
))
4011 obstack_grow (&collect_obstack
, "'-", 2);
4012 q
= switches
[i
].part1
;
4013 while ((p
= strchr (q
, '\'')))
4015 obstack_grow (&collect_obstack
, q
, p
- q
);
4016 obstack_grow (&collect_obstack
, "'\\''", 4);
4019 obstack_grow (&collect_obstack
, q
, strlen (q
));
4020 obstack_grow (&collect_obstack
, "'", 1);
4022 for (args
= switches
[i
].args
; args
&& *args
; args
++)
4024 obstack_grow (&collect_obstack
, " '", 2);
4026 while ((p
= strchr (q
, '\'')))
4028 obstack_grow (&collect_obstack
, q
, p
- q
);
4029 obstack_grow (&collect_obstack
, "'\\''", 4);
4032 obstack_grow (&collect_obstack
, q
, strlen (q
));
4033 obstack_grow (&collect_obstack
, "'", 1);
4036 obstack_grow (&collect_obstack
, "\0", 1);
4037 xputenv (XOBFINISH (&collect_obstack
, char *));
4040 /* Process a spec string, accumulating and running commands. */
4042 /* These variables describe the input file name.
4043 input_file_number is the index on outfiles of this file,
4044 so that the output file name can be stored for later use by %o.
4045 input_basename is the start of the part of the input file
4046 sans all directory names, and basename_length is the number
4047 of characters starting there excluding the suffix .c or whatever. */
4049 static const char *gcc_input_filename
;
4050 static int input_file_number
;
4051 size_t input_filename_length
;
4052 static int basename_length
;
4053 static int suffixed_basename_length
;
4054 static const char *input_basename
;
4055 static const char *input_suffix
;
4056 #ifndef HOST_LACKS_INODE_NUMBERS
4057 static struct stat input_stat
;
4059 static int input_stat_set
;
4061 /* The compiler used to process the current input file. */
4062 static struct compiler
*input_file_compiler
;
4064 /* These are variables used within do_spec and do_spec_1. */
4066 /* Nonzero if an arg has been started and not yet terminated
4067 (with space, tab or newline). */
4068 static int arg_going
;
4070 /* Nonzero means %d or %g has been seen; the next arg to be terminated
4071 is a temporary file name. */
4072 static int delete_this_arg
;
4074 /* Nonzero means %w has been seen; the next arg to be terminated
4075 is the output file name of this compilation. */
4076 static int this_is_output_file
;
4078 /* Nonzero means %s has been seen; the next arg to be terminated
4079 is the name of a library file and we should try the standard
4080 search dirs for it. */
4081 static int this_is_library_file
;
4083 /* Nonzero means %T has been seen; the next arg to be terminated
4084 is the name of a linker script and we should try all of the
4085 standard search dirs for it. If it is found insert a --script
4086 command line switch and then substitute the full path in place,
4087 otherwise generate an error message. */
4088 static int this_is_linker_script
;
4090 /* Nonzero means that the input of this command is coming from a pipe. */
4091 static int input_from_pipe
;
4093 /* Nonnull means substitute this for any suffix when outputting a switches
4095 static const char *suffix_subst
;
4097 /* If there is an argument being accumulated, terminate it and store it. */
4100 end_going_arg (void)
4106 obstack_1grow (&obstack
, 0);
4107 string
= XOBFINISH (&obstack
, const char *);
4108 if (this_is_library_file
)
4109 string
= find_file (string
);
4110 if (this_is_linker_script
)
4112 char * full_script_path
= find_a_file (&startfile_prefixes
, string
, R_OK
, true);
4114 if (full_script_path
== NULL
)
4116 error ("unable to locate default linker script %qs in the library search paths", string
);
4117 /* Script was not found on search path. */
4120 store_arg ("--script", false, false);
4121 string
= full_script_path
;
4123 store_arg (string
, delete_this_arg
, this_is_output_file
);
4124 if (this_is_output_file
)
4125 outfiles
[input_file_number
] = string
;
4131 /* Parse the WRAPPER string which is a comma separated list of the command line
4132 and insert them into the beginning of argbuf. */
4135 insert_wrapper (const char *wrapper
)
4139 char *buf
= xstrdup (wrapper
);
4141 unsigned int old_length
= VEC_length (const_char_p
, argbuf
);
4149 while ((p
= strchr (p
, ',')) != NULL
);
4151 VEC_safe_grow (const_char_p
, heap
, argbuf
, old_length
+ n
);
4152 memmove (VEC_address (const_char_p
, argbuf
) + n
,
4153 VEC_address (const_char_p
, argbuf
),
4154 old_length
* sizeof (const_char_p
));
4165 VEC_replace (const_char_p
, argbuf
, i
, p
);
4168 while ((p
= strchr (p
, ',')) != NULL
);
4169 gcc_assert (i
== n
);
4172 /* Process the spec SPEC and run the commands specified therein.
4173 Returns 0 if the spec is successfully processed; -1 if failed. */
4176 do_spec (const char *spec
)
4180 value
= do_spec_2 (spec
);
4182 /* Force out any unfinished command.
4183 If -pipe, this forces out the last command if it ended in `|'. */
4186 if (VEC_length (const_char_p
, argbuf
) > 0
4187 && !strcmp (VEC_last (const_char_p
, argbuf
), "|"))
4188 VEC_pop (const_char_p
, argbuf
);
4190 set_collect_gcc_options ();
4192 if (VEC_length (const_char_p
, argbuf
) > 0)
4200 do_spec_2 (const char *spec
)
4206 delete_this_arg
= 0;
4207 this_is_output_file
= 0;
4208 this_is_library_file
= 0;
4209 this_is_linker_script
= 0;
4210 input_from_pipe
= 0;
4211 suffix_subst
= NULL
;
4213 result
= do_spec_1 (spec
, 0, NULL
);
4221 /* Process the given spec string and add any new options to the end
4222 of the switches/n_switches array. */
4225 do_option_spec (const char *name
, const char *spec
)
4227 unsigned int i
, value_count
, value_len
;
4228 const char *p
, *q
, *value
;
4229 char *tmp_spec
, *tmp_spec_p
;
4231 if (configure_default_options
[0].name
== NULL
)
4234 for (i
= 0; i
< ARRAY_SIZE (configure_default_options
); i
++)
4235 if (strcmp (configure_default_options
[i
].name
, name
) == 0)
4237 if (i
== ARRAY_SIZE (configure_default_options
))
4240 value
= configure_default_options
[i
].value
;
4241 value_len
= strlen (value
);
4243 /* Compute the size of the final spec. */
4246 while ((p
= strstr (p
, "%(VALUE)")) != NULL
)
4252 /* Replace each %(VALUE) by the specified value. */
4253 tmp_spec
= (char *) alloca (strlen (spec
) + 1
4254 + value_count
* (value_len
- strlen ("%(VALUE)")));
4255 tmp_spec_p
= tmp_spec
;
4257 while ((p
= strstr (q
, "%(VALUE)")) != NULL
)
4259 memcpy (tmp_spec_p
, q
, p
- q
);
4260 tmp_spec_p
= tmp_spec_p
+ (p
- q
);
4261 memcpy (tmp_spec_p
, value
, value_len
);
4262 tmp_spec_p
+= value_len
;
4263 q
= p
+ strlen ("%(VALUE)");
4265 strcpy (tmp_spec_p
, q
);
4267 do_self_spec (tmp_spec
);
4270 /* Process the given spec string and add any new options to the end
4271 of the switches/n_switches array. */
4274 do_self_spec (const char *spec
)
4279 do_spec_1 (" ", 0, NULL
);
4281 /* Mark %<S switches processed by do_self_spec to be ignored permanently.
4282 do_self_specs adds the replacements to switches array, so it shouldn't
4283 be processed afterwards. */
4284 for (i
= 0; i
< n_switches
; i
++)
4285 if ((switches
[i
].live_cond
& SWITCH_IGNORE
))
4286 switches
[i
].live_cond
|= SWITCH_IGNORE_PERMANENTLY
;
4288 if (VEC_length (const_char_p
, argbuf
) > 0)
4290 const char **argbuf_copy
;
4291 struct cl_decoded_option
*decoded_options
;
4292 struct cl_option_handlers handlers
;
4293 unsigned int decoded_options_count
;
4296 /* Create a copy of argbuf with a dummy argv[0] entry for
4297 decode_cmdline_options_to_array. */
4298 argbuf_copy
= XNEWVEC (const char *,
4299 VEC_length (const_char_p
, argbuf
) + 1);
4300 argbuf_copy
[0] = "";
4301 memcpy (argbuf_copy
+ 1, VEC_address (const_char_p
, argbuf
),
4302 VEC_length (const_char_p
, argbuf
) * sizeof (const char *));
4304 decode_cmdline_options_to_array (VEC_length (const_char_p
, argbuf
) + 1,
4306 CL_DRIVER
, &decoded_options
,
4307 &decoded_options_count
);
4309 set_option_handlers (&handlers
);
4311 for (j
= 1; j
< decoded_options_count
; j
++)
4313 switch (decoded_options
[j
].opt_index
)
4315 case OPT_SPECIAL_input_file
:
4316 /* Specs should only generate options, not input
4318 if (strcmp (decoded_options
[j
].arg
, "-") != 0)
4319 fatal_error ("switch %qs does not start with %<-%>",
4320 decoded_options
[j
].arg
);
4322 fatal_error ("spec-generated switch is just %<-%>");
4325 case OPT_fcompare_debug_second
:
4326 case OPT_fcompare_debug
:
4327 case OPT_fcompare_debug_
:
4329 /* Avoid duplicate processing of some options from
4330 compare-debug specs; just save them here. */
4331 save_switch (decoded_options
[j
].canonical_option
[0],
4332 (decoded_options
[j
].canonical_option_num_elements
4334 &decoded_options
[j
].canonical_option
[1], false);
4338 read_cmdline_option (&global_options
, &global_options_set
,
4339 decoded_options
+ j
, UNKNOWN_LOCATION
,
4340 CL_DRIVER
, &handlers
, global_dc
);
4346 switches
[n_switches
].part1
= 0;
4350 /* Callback for processing %D and %I specs. */
4352 struct spec_path_info
{
4357 bool separate_options
;
4361 spec_path (char *path
, void *data
)
4363 struct spec_path_info
*info
= (struct spec_path_info
*) data
;
4367 if (info
->omit_relative
&& !IS_ABSOLUTE_PATH (path
))
4370 if (info
->append_len
!= 0)
4372 len
= strlen (path
);
4373 memcpy (path
+ len
, info
->append
, info
->append_len
+ 1);
4376 if (!is_directory (path
, true))
4379 do_spec_1 (info
->option
, 1, NULL
);
4380 if (info
->separate_options
)
4381 do_spec_1 (" ", 0, NULL
);
4383 if (info
->append_len
== 0)
4385 len
= strlen (path
);
4386 save
= path
[len
- 1];
4387 if (IS_DIR_SEPARATOR (path
[len
- 1]))
4388 path
[len
- 1] = '\0';
4391 do_spec_1 (path
, 1, NULL
);
4392 do_spec_1 (" ", 0, NULL
);
4394 /* Must not damage the original path. */
4395 if (info
->append_len
== 0)
4396 path
[len
- 1] = save
;
4401 /* Create a temporary FILE with the contents of ARGV. Add @FILE to the
4405 create_at_file (char **argv
)
4407 char *temp_file
= make_temp_file ("");
4408 char *at_argument
= concat ("@", temp_file
, NULL
);
4409 FILE *f
= fopen (temp_file
, "w");
4413 fatal_error ("could not open temporary response file %s",
4416 status
= writeargv (argv
, f
);
4419 fatal_error ("could not write to temporary response file %s",
4422 status
= fclose (f
);
4425 fatal_error ("could not close temporary response file %s",
4428 store_arg (at_argument
, 0, 0);
4430 record_temp_file (temp_file
, !save_temps_flag
, !save_temps_flag
);
4433 /* True if we should compile INFILE. */
4436 compile_input_file_p (struct infile
*infile
)
4438 if ((!infile
->language
) || (infile
->language
[0] != '*'))
4439 if (infile
->incompiler
== input_file_compiler
)
4444 /* Process each member of VEC as a spec. */
4447 do_specs_vec (VEC(char_p
,heap
) *vec
)
4452 FOR_EACH_VEC_ELT (char_p
, vec
, ix
, opt
)
4454 do_spec_1 (opt
, 1, NULL
);
4455 /* Make each accumulated option a separate argument. */
4456 do_spec_1 (" ", 0, NULL
);
4460 /* Process the sub-spec SPEC as a portion of a larger spec.
4461 This is like processing a whole spec except that we do
4462 not initialize at the beginning and we do not supply a
4463 newline by default at the end.
4464 INSWITCH nonzero means don't process %-sequences in SPEC;
4465 in this case, % is treated as an ordinary character.
4466 This is used while substituting switches.
4467 INSWITCH nonzero also causes SPC not to terminate an argument.
4469 Value is zero unless a line was finished
4470 and the command on that line reported an error. */
4473 do_spec_1 (const char *spec
, int inswitch
, const char *soft_matched_part
)
4475 const char *p
= spec
;
4480 /* If it's an empty string argument to a switch, keep it as is. */
4481 if (inswitch
&& !*p
)
4485 /* If substituting a switch, treat all chars like letters.
4486 Otherwise, NL, SPC, TAB and % are special. */
4487 switch (inswitch
? 'a' : c
)
4492 if (VEC_length (const_char_p
, argbuf
) > 0
4493 && !strcmp (VEC_last (const_char_p
, argbuf
), "|"))
4495 /* A `|' before the newline means use a pipe here,
4496 but only if -pipe was specified.
4497 Otherwise, execute now and don't pass the `|' as an arg. */
4500 input_from_pipe
= 1;
4504 VEC_pop (const_char_p
, argbuf
);
4507 set_collect_gcc_options ();
4509 if (VEC_length (const_char_p
, argbuf
) > 0)
4515 /* Reinitialize for a new command, and for a new argument. */
4518 delete_this_arg
= 0;
4519 this_is_output_file
= 0;
4520 this_is_library_file
= 0;
4521 this_is_linker_script
= 0;
4522 input_from_pipe
= 0;
4529 obstack_1grow (&obstack
, c
);
4537 /* Reinitialize for a new argument. */
4538 delete_this_arg
= 0;
4539 this_is_output_file
= 0;
4540 this_is_library_file
= 0;
4541 this_is_linker_script
= 0;
4548 fatal_error ("spec %qs invalid", spec
);
4551 if (save_temps_length
)
4552 obstack_grow (&obstack
, save_temps_prefix
, save_temps_length
);
4554 obstack_grow (&obstack
, input_basename
, basename_length
);
4555 if (compare_debug
< 0)
4556 obstack_grow (&obstack
, ".gk", 3);
4561 if (save_temps_length
)
4562 obstack_grow (&obstack
, save_temps_prefix
, save_temps_length
);
4564 obstack_grow (&obstack
, input_basename
, suffixed_basename_length
);
4565 if (compare_debug
< 0)
4566 obstack_grow (&obstack
, ".gk", 3);
4571 delete_this_arg
= 2;
4574 /* Dump out the directories specified with LIBRARY_PATH,
4575 followed by the absolute directories
4576 that we search for startfiles. */
4579 struct spec_path_info info
;
4582 info
.append_len
= 0;
4583 #ifdef RELATIVE_PREFIX_NOT_LINKDIR
4584 /* Used on systems which record the specified -L dirs
4585 and use them to search for dynamic linking.
4586 Relative directories always come from -B,
4587 and it is better not to use them for searching
4588 at run time. In particular, stage1 loses. */
4589 info
.omit_relative
= true;
4591 info
.omit_relative
= false;
4593 info
.separate_options
= false;
4595 for_each_path (&startfile_prefixes
, true, 0, spec_path
, &info
);
4600 /* %efoo means report an error with `foo' as error message
4601 and don't execute any more commands for this file. */
4605 while (*p
!= 0 && *p
!= '\n')
4607 buf
= (char *) alloca (p
- q
+ 1);
4608 strncpy (buf
, q
, p
- q
);
4610 error ("%s", _(buf
));
4615 /* %nfoo means report a notice with `foo' on stderr. */
4619 while (*p
!= 0 && *p
!= '\n')
4621 buf
= (char *) alloca (p
- q
+ 1);
4622 strncpy (buf
, q
, p
- q
);
4624 inform (0, "%s", _(buf
));
4634 /* If save_temps_flag is off, and the HOST_BIT_BUCKET is
4635 defined, and it is not a directory, and it is
4636 writable, use it. Otherwise, treat this like any
4637 other temporary file. */
4639 if ((!save_temps_flag
)
4640 && (stat (HOST_BIT_BUCKET
, &st
) == 0) && (!S_ISDIR (st
.st_mode
))
4641 && (access (HOST_BIT_BUCKET
, W_OK
) == 0))
4643 obstack_grow (&obstack
, HOST_BIT_BUCKET
,
4644 strlen (HOST_BIT_BUCKET
));
4645 delete_this_arg
= 0;
4650 goto create_temp_file
;
4654 obstack_1grow (&obstack
, '-');
4655 delete_this_arg
= 0;
4658 /* consume suffix */
4659 while (*p
== '.' || ISALNUM ((unsigned char) *p
))
4661 if (p
[0] == '%' && p
[1] == 'O')
4666 goto create_temp_file
;
4670 /* consume suffix */
4671 while (*p
== '.' || ISALNUM ((unsigned char) *p
))
4673 if (p
[0] == '%' && p
[1] == 'O')
4678 goto create_temp_file
;
4684 struct temp_name
*t
;
4686 const char *suffix
= p
;
4687 char *saved_suffix
= NULL
;
4689 while (*p
== '.' || ISALNUM ((unsigned char) *p
))
4691 suffix_length
= p
- suffix
;
4692 if (p
[0] == '%' && p
[1] == 'O')
4695 /* We don't support extra suffix characters after %O. */
4696 if (*p
== '.' || ISALNUM ((unsigned char) *p
))
4697 fatal_error ("spec %qs has invalid %<%%0%c%>", spec
, *p
);
4698 if (suffix_length
== 0)
4699 suffix
= TARGET_OBJECT_SUFFIX
;
4703 = XNEWVEC (char, suffix_length
4704 + strlen (TARGET_OBJECT_SUFFIX
));
4705 strncpy (saved_suffix
, suffix
, suffix_length
);
4706 strcpy (saved_suffix
+ suffix_length
,
4707 TARGET_OBJECT_SUFFIX
);
4709 suffix_length
+= strlen (TARGET_OBJECT_SUFFIX
);
4712 if (compare_debug
< 0)
4714 suffix
= concat (".gk", suffix
, NULL
);
4718 /* If -save-temps=obj and -o were specified, use that for the
4720 if (save_temps_length
)
4723 temp_filename_length
4724 = save_temps_length
+ suffix_length
+ 1;
4725 tmp
= (char *) alloca (temp_filename_length
);
4726 memcpy (tmp
, save_temps_prefix
, save_temps_length
);
4727 memcpy (tmp
+ save_temps_length
, suffix
, suffix_length
);
4728 tmp
[save_temps_length
+ suffix_length
] = '\0';
4729 temp_filename
= save_string (tmp
,
4730 temp_filename_length
+ 1);
4731 obstack_grow (&obstack
, temp_filename
,
4732 temp_filename_length
);
4734 delete_this_arg
= 0;
4738 /* If the gcc_input_filename has the same suffix specified
4739 for the %g, %u, or %U, and -save-temps is specified,
4740 we could end up using that file as an intermediate
4741 thus clobbering the user's source file (.e.g.,
4742 gcc -save-temps foo.s would clobber foo.s with the
4743 output of cpp0). So check for this condition and
4744 generate a temp file as the intermediate. */
4746 if (save_temps_flag
)
4749 temp_filename_length
= basename_length
+ suffix_length
+ 1;
4750 tmp
= (char *) alloca (temp_filename_length
);
4751 memcpy (tmp
, input_basename
, basename_length
);
4752 memcpy (tmp
+ basename_length
, suffix
, suffix_length
);
4753 tmp
[basename_length
+ suffix_length
] = '\0';
4754 temp_filename
= tmp
;
4756 if (filename_cmp (temp_filename
, gcc_input_filename
) != 0)
4758 #ifndef HOST_LACKS_INODE_NUMBERS
4759 struct stat st_temp
;
4761 /* Note, set_input() resets input_stat_set to 0. */
4762 if (input_stat_set
== 0)
4764 input_stat_set
= stat (gcc_input_filename
,
4766 if (input_stat_set
>= 0)
4770 /* If we have the stat for the gcc_input_filename
4771 and we can do the stat for the temp_filename
4772 then the they could still refer to the same
4773 file if st_dev/st_ino's are the same. */
4774 if (input_stat_set
!= 1
4775 || stat (temp_filename
, &st_temp
) < 0
4776 || input_stat
.st_dev
!= st_temp
.st_dev
4777 || input_stat
.st_ino
!= st_temp
.st_ino
)
4779 /* Just compare canonical pathnames. */
4780 char* input_realname
= lrealpath (gcc_input_filename
);
4781 char* temp_realname
= lrealpath (temp_filename
);
4782 bool files_differ
= filename_cmp (input_realname
, temp_realname
);
4783 free (input_realname
);
4784 free (temp_realname
);
4788 temp_filename
= save_string (temp_filename
,
4789 temp_filename_length
+ 1);
4790 obstack_grow (&obstack
, temp_filename
,
4791 temp_filename_length
);
4793 delete_this_arg
= 0;
4799 /* See if we already have an association of %g/%u/%U and
4801 for (t
= temp_names
; t
; t
= t
->next
)
4802 if (t
->length
== suffix_length
4803 && strncmp (t
->suffix
, suffix
, suffix_length
) == 0
4804 && t
->unique
== (c
== 'u' || c
== 'U' || c
== 'j'))
4807 /* Make a new association if needed. %u and %j
4809 if (t
== 0 || c
== 'u' || c
== 'j')
4813 t
= XNEW (struct temp_name
);
4814 t
->next
= temp_names
;
4817 t
->length
= suffix_length
;
4820 t
->suffix
= saved_suffix
;
4821 saved_suffix
= NULL
;
4824 t
->suffix
= save_string (suffix
, suffix_length
);
4825 t
->unique
= (c
== 'u' || c
== 'U' || c
== 'j');
4826 temp_filename
= make_temp_file (t
->suffix
);
4827 temp_filename_length
= strlen (temp_filename
);
4828 t
->filename
= temp_filename
;
4829 t
->filename_length
= temp_filename_length
;
4832 free (saved_suffix
);
4834 obstack_grow (&obstack
, t
->filename
, t
->filename_length
);
4835 delete_this_arg
= 1;
4843 if (at_file_supplied
)
4845 /* We are going to expand `%i' to `@FILE', where FILE
4846 is a newly-created temporary filename. The filenames
4847 that would usually be expanded in place of %o will be
4848 written to the temporary file. */
4853 for (i
= 0; i
< n_infiles
; i
++)
4854 if (compile_input_file_p (&infiles
[i
]))
4857 argv
= (char **) alloca (sizeof (char *) * (n_files
+ 1));
4859 /* Copy the strings over. */
4860 for (i
= 0, j
= 0; i
< n_infiles
; i
++)
4861 if (compile_input_file_p (&infiles
[i
]))
4863 argv
[j
] = CONST_CAST (char *, infiles
[i
].name
);
4864 infiles
[i
].compiled
= true;
4869 create_at_file (argv
);
4872 for (i
= 0; (int) i
< n_infiles
; i
++)
4873 if (compile_input_file_p (&infiles
[i
]))
4875 store_arg (infiles
[i
].name
, 0, 0);
4876 infiles
[i
].compiled
= true;
4881 obstack_grow (&obstack
, gcc_input_filename
,
4882 input_filename_length
);
4889 struct spec_path_info info
;
4893 do_spec_1 ("-imultilib", 1, NULL
);
4894 /* Make this a separate argument. */
4895 do_spec_1 (" ", 0, NULL
);
4896 do_spec_1 (multilib_dir
, 1, NULL
);
4897 do_spec_1 (" ", 0, NULL
);
4900 if (gcc_exec_prefix
)
4902 do_spec_1 ("-iprefix", 1, NULL
);
4903 /* Make this a separate argument. */
4904 do_spec_1 (" ", 0, NULL
);
4905 do_spec_1 (gcc_exec_prefix
, 1, NULL
);
4906 do_spec_1 (" ", 0, NULL
);
4909 if (target_system_root_changed
||
4910 (target_system_root
&& target_sysroot_hdrs_suffix
))
4912 do_spec_1 ("-isysroot", 1, NULL
);
4913 /* Make this a separate argument. */
4914 do_spec_1 (" ", 0, NULL
);
4915 do_spec_1 (target_system_root
, 1, NULL
);
4916 if (target_sysroot_hdrs_suffix
)
4917 do_spec_1 (target_sysroot_hdrs_suffix
, 1, NULL
);
4918 do_spec_1 (" ", 0, NULL
);
4921 info
.option
= "-isystem";
4922 info
.append
= "include";
4923 info
.append_len
= strlen (info
.append
);
4924 info
.omit_relative
= false;
4925 info
.separate_options
= true;
4927 for_each_path (&include_prefixes
, false, info
.append_len
,
4930 info
.append
= "include-fixed";
4931 if (*sysroot_hdrs_suffix_spec
)
4932 info
.append
= concat (info
.append
, dir_separator_str
,
4933 multilib_dir
, NULL
);
4934 info
.append_len
= strlen (info
.append
);
4935 for_each_path (&include_prefixes
, false, info
.append_len
,
4942 int max
= n_infiles
;
4943 max
+= lang_specific_extra_outfiles
;
4945 if (HAVE_GNU_LD
&& at_file_supplied
)
4947 /* We are going to expand `%o' to `@FILE', where FILE
4948 is a newly-created temporary filename. The filenames
4949 that would usually be expanded in place of %o will be
4950 written to the temporary file. */
4955 /* Convert OUTFILES into a form suitable for writeargv. */
4957 /* Determine how many are non-NULL. */
4958 for (n_files
= 0, i
= 0; i
< max
; i
++)
4959 n_files
+= outfiles
[i
] != NULL
;
4961 argv
= (char **) alloca (sizeof (char *) * (n_files
+ 1));
4963 /* Copy the strings over. */
4964 for (i
= 0, j
= 0; i
< max
; i
++)
4967 argv
[j
] = CONST_CAST (char *, outfiles
[i
]);
4972 create_at_file (argv
);
4975 for (i
= 0; i
< max
; i
++)
4977 store_arg (outfiles
[i
], 0, 0);
4982 obstack_grow (&obstack
, TARGET_OBJECT_SUFFIX
, strlen (TARGET_OBJECT_SUFFIX
));
4987 this_is_library_file
= 1;
4991 this_is_linker_script
= 1;
4995 outfiles
[input_file_number
] = NULL
;
4999 this_is_output_file
= 1;
5004 unsigned int cur_index
= VEC_length (const_char_p
, argbuf
);
5005 /* Handle the {...} following the %W. */
5007 fatal_error ("spec %qs has invalid %<%%W%c%>", spec
, *p
);
5008 p
= handle_braces (p
+ 1);
5012 /* If any args were output, mark the last one for deletion
5014 if (VEC_length (const_char_p
, argbuf
) != cur_index
)
5015 record_temp_file (VEC_last (const_char_p
, argbuf
), 0, 1);
5019 /* %x{OPTION} records OPTION for %X to output. */
5027 /* Skip past the option value and make a copy. */
5029 fatal_error ("spec %qs has invalid %<%%x%c%>", spec
, *p
);
5032 string
= save_string (p1
+ 1, p
- p1
- 2);
5034 /* See if we already recorded this option. */
5035 FOR_EACH_VEC_ELT (char_p
, linker_options
, ix
, opt
)
5036 if (! strcmp (string
, opt
))
5042 /* This option is new; add it. */
5043 add_linker_option (string
, strlen (string
));
5047 /* Dump out the options accumulated previously using %x. */
5049 do_specs_vec (linker_options
);
5052 /* Dump out the options accumulated previously using -Wa,. */
5054 do_specs_vec (assembler_options
);
5057 /* Dump out the options accumulated previously using -Wp,. */
5059 do_specs_vec (preprocessor_options
);
5062 /* Here are digits and numbers that just process
5063 a certain constant string as a spec. */
5066 value
= do_spec_1 (cc1_spec
, 0, NULL
);
5072 value
= do_spec_1 (cc1plus_spec
, 0, NULL
);
5078 value
= do_spec_1 (asm_spec
, 0, NULL
);
5084 value
= do_spec_1 (asm_final_spec
, 0, NULL
);
5091 const char *const spec
5092 = (input_file_compiler
->cpp_spec
5093 ? input_file_compiler
->cpp_spec
5095 value
= do_spec_1 (spec
, 0, NULL
);
5102 value
= do_spec_1 (endfile_spec
, 0, NULL
);
5108 value
= do_spec_1 (link_spec
, 0, NULL
);
5114 value
= do_spec_1 (lib_spec
, 0, NULL
);
5120 if (multilib_os_dir
== NULL
)
5121 obstack_1grow (&obstack
, '.');
5123 obstack_grow (&obstack
, multilib_os_dir
,
5124 strlen (multilib_os_dir
));
5128 value
= do_spec_1 (libgcc_spec
, 0, NULL
);
5134 /* We assume there is a directory
5135 separator at the end of this string. */
5136 if (target_system_root
)
5138 obstack_grow (&obstack
, target_system_root
,
5139 strlen (target_system_root
));
5140 if (target_sysroot_suffix
)
5141 obstack_grow (&obstack
, target_sysroot_suffix
,
5142 strlen (target_sysroot_suffix
));
5147 value
= do_spec_1 (startfile_spec
, 0, NULL
);
5152 /* Here we define characters other than letters and digits. */
5155 p
= handle_braces (p
);
5161 p
= handle_spec_function (p
);
5167 obstack_1grow (&obstack
, '%');
5174 while (p
[len
] && p
[len
] != ' ' && p
[len
] != '%')
5176 suffix_subst
= save_string (p
- 1, len
+ 1);
5181 /* Henceforth ignore the option(s) matching the pattern
5187 int have_wildcard
= 0;
5192 switch_option
= SWITCH_IGNORE
| SWITCH_KEEP_FOR_GCC
;
5194 switch_option
= SWITCH_IGNORE
;
5196 while (p
[len
] && p
[len
] != ' ' && p
[len
] != '\t')
5199 if (p
[len
-1] == '*')
5202 for (i
= 0; i
< n_switches
; i
++)
5203 if (!strncmp (switches
[i
].part1
, p
, len
- have_wildcard
)
5204 && (have_wildcard
|| switches
[i
].part1
[len
] == '\0'))
5206 switches
[i
].live_cond
|= switch_option
;
5207 switches
[i
].validated
= 1;
5215 if (soft_matched_part
)
5217 if (soft_matched_part
[0])
5218 do_spec_1 (soft_matched_part
, 1, NULL
);
5219 do_spec_1 (" ", 0, NULL
);
5222 /* Catch the case where a spec string contains something like
5223 '%{foo:%*}'. i.e. there is no * in the pattern on the left
5224 hand side of the :. */
5225 error ("spec failure: %<%%*%> has not been initialized by pattern match");
5228 /* Process a string found as the value of a spec given by name.
5229 This feature allows individual machine descriptions
5230 to add and use their own specs. */
5233 const char *name
= p
;
5234 struct spec_list
*sl
;
5237 /* The string after the S/P is the name of a spec that is to be
5239 while (*p
&& *p
!= ')')
5242 /* See if it's in the list. */
5243 for (len
= p
- name
, sl
= specs
; sl
; sl
= sl
->next
)
5244 if (sl
->name_len
== len
&& !strncmp (sl
->name
, name
, len
))
5246 name
= *(sl
->ptr_spec
);
5248 fnotice (stderr
, "Processing spec (%s), which is '%s'\n",
5256 value
= do_spec_1 (name
, 0, NULL
);
5261 /* Discard the closing paren. */
5268 error ("spec failure: unrecognized spec option %qc", c
);
5274 /* Backslash: treat next character as ordinary. */
5279 /* Ordinary character: put it into the current argument. */
5280 obstack_1grow (&obstack
, c
);
5284 /* End of string. If we are processing a spec function, we need to
5285 end any pending argument. */
5286 if (processing_spec_function
)
5292 /* Look up a spec function. */
5294 static const struct spec_function
*
5295 lookup_spec_function (const char *name
)
5297 const struct spec_function
*sf
;
5299 for (sf
= static_spec_functions
; sf
->name
!= NULL
; sf
++)
5300 if (strcmp (sf
->name
, name
) == 0)
5306 /* Evaluate a spec function. */
5309 eval_spec_function (const char *func
, const char *args
)
5311 const struct spec_function
*sf
;
5312 const char *funcval
;
5314 /* Saved spec processing context. */
5315 VEC(const_char_p
,heap
) *save_argbuf
;
5318 int save_delete_this_arg
;
5319 int save_this_is_output_file
;
5320 int save_this_is_library_file
;
5321 int save_input_from_pipe
;
5322 int save_this_is_linker_script
;
5323 const char *save_suffix_subst
;
5325 int save_growing_size
;
5326 void *save_growing_value
;
5328 sf
= lookup_spec_function (func
);
5330 fatal_error ("unknown spec function %qs", func
);
5332 /* Push the spec processing context. */
5333 save_argbuf
= argbuf
;
5335 save_arg_going
= arg_going
;
5336 save_delete_this_arg
= delete_this_arg
;
5337 save_this_is_output_file
= this_is_output_file
;
5338 save_this_is_library_file
= this_is_library_file
;
5339 save_this_is_linker_script
= this_is_linker_script
;
5340 save_input_from_pipe
= input_from_pipe
;
5341 save_suffix_subst
= suffix_subst
;
5343 /* If we have some object growing now, finalize it so the args and function
5344 eval proceed from a cleared context. This is needed to prevent the first
5345 constructed arg from mistakenly including the growing value. We'll push
5346 this value back on the obstack once the function evaluation is done, to
5347 restore a consistent processing context for our caller. This is fine as
5348 the address of growing objects isn't guaranteed to remain stable until
5349 they are finalized, and we expect this situation to be rare enough for
5350 the extra copy not to be an issue. */
5351 save_growing_size
= obstack_object_size (&obstack
);
5352 if (save_growing_size
> 0)
5353 save_growing_value
= obstack_finish (&obstack
);
5355 /* Create a new spec processing context, and build the function
5359 if (do_spec_2 (args
) < 0)
5360 fatal_error ("error in args to spec function %qs", func
);
5362 /* argbuf_index is an index for the next argument to be inserted, and
5363 so contains the count of the args already inserted. */
5365 funcval
= (*sf
->func
) (VEC_length (const_char_p
, argbuf
),
5366 VEC_address (const_char_p
, argbuf
));
5368 /* Pop the spec processing context. */
5369 VEC_free (const_char_p
, heap
, argbuf
);
5370 argbuf
= save_argbuf
;
5372 arg_going
= save_arg_going
;
5373 delete_this_arg
= save_delete_this_arg
;
5374 this_is_output_file
= save_this_is_output_file
;
5375 this_is_library_file
= save_this_is_library_file
;
5376 this_is_linker_script
= save_this_is_linker_script
;
5377 input_from_pipe
= save_input_from_pipe
;
5378 suffix_subst
= save_suffix_subst
;
5380 if (save_growing_size
> 0)
5381 obstack_grow (&obstack
, save_growing_value
, save_growing_size
);
5386 /* Handle a spec function call of the form:
5390 ARGS is processed as a spec in a separate context and split into an
5391 argument vector in the normal fashion. The function returns a string
5392 containing a spec which we then process in the caller's context, or
5393 NULL if no processing is required. */
5396 handle_spec_function (const char *p
)
5399 const char *endp
, *funcval
;
5402 processing_spec_function
++;
5404 /* Get the function name. */
5405 for (endp
= p
; *endp
!= '\0'; endp
++)
5407 if (*endp
== '(') /* ) */
5409 /* Only allow [A-Za-z0-9], -, and _ in function names. */
5410 if (!ISALNUM (*endp
) && !(*endp
== '-' || *endp
== '_'))
5411 fatal_error ("malformed spec function name");
5413 if (*endp
!= '(') /* ) */
5414 fatal_error ("no arguments for spec function");
5415 func
= save_string (p
, endp
- p
);
5418 /* Get the arguments. */
5419 for (count
= 0; *endp
!= '\0'; endp
++)
5428 else if (*endp
== '(') /* ) */
5433 fatal_error ("malformed spec function arguments");
5434 args
= save_string (p
, endp
- p
);
5437 /* p now points to just past the end of the spec function expression. */
5439 funcval
= eval_spec_function (func
, args
);
5440 if (funcval
!= NULL
&& do_spec_1 (funcval
, 0, NULL
) < 0)
5446 processing_spec_function
--;
5451 /* Inline subroutine of handle_braces. Returns true if the current
5452 input suffix matches the atom bracketed by ATOM and END_ATOM. */
5454 input_suffix_matches (const char *atom
, const char *end_atom
)
5456 return (input_suffix
5457 && !strncmp (input_suffix
, atom
, end_atom
- atom
)
5458 && input_suffix
[end_atom
- atom
] == '\0');
5461 /* Subroutine of handle_braces. Returns true if the current
5462 input file's spec name matches the atom bracketed by ATOM and END_ATOM. */
5464 input_spec_matches (const char *atom
, const char *end_atom
)
5466 return (input_file_compiler
5467 && input_file_compiler
->suffix
5468 && input_file_compiler
->suffix
[0] != '\0'
5469 && !strncmp (input_file_compiler
->suffix
+ 1, atom
,
5471 && input_file_compiler
->suffix
[end_atom
- atom
+ 1] == '\0');
5474 /* Subroutine of handle_braces. Returns true if a switch
5475 matching the atom bracketed by ATOM and END_ATOM appeared on the
5478 switch_matches (const char *atom
, const char *end_atom
, int starred
)
5481 int len
= end_atom
- atom
;
5482 int plen
= starred
? len
: -1;
5484 for (i
= 0; i
< n_switches
; i
++)
5485 if (!strncmp (switches
[i
].part1
, atom
, len
)
5486 && (starred
|| switches
[i
].part1
[len
] == '\0')
5487 && check_live_switch (i
, plen
))
5490 /* Check if a switch with separated form matching the atom.
5491 We check -D and -U switches. */
5492 else if (switches
[i
].args
!= 0)
5494 if ((*switches
[i
].part1
== 'D' || *switches
[i
].part1
== 'U')
5495 && *switches
[i
].part1
== atom
[0])
5497 if (!strncmp (switches
[i
].args
[0], &atom
[1], len
- 1)
5498 && (starred
|| (switches
[i
].part1
[1] == '\0'
5499 && switches
[i
].args
[0][len
- 1] == '\0'))
5500 && check_live_switch (i
, (starred
? 1 : -1)))
5508 /* Inline subroutine of handle_braces. Mark all of the switches which
5509 match ATOM (extends to END_ATOM; STARRED indicates whether there
5510 was a star after the atom) for later processing. */
5512 mark_matching_switches (const char *atom
, const char *end_atom
, int starred
)
5515 int len
= end_atom
- atom
;
5516 int plen
= starred
? len
: -1;
5518 for (i
= 0; i
< n_switches
; i
++)
5519 if (!strncmp (switches
[i
].part1
, atom
, len
)
5520 && (starred
|| switches
[i
].part1
[len
] == '\0')
5521 && check_live_switch (i
, plen
))
5522 switches
[i
].ordering
= 1;
5525 /* Inline subroutine of handle_braces. Process all the currently
5526 marked switches through give_switch, and clear the marks. */
5528 process_marked_switches (void)
5532 for (i
= 0; i
< n_switches
; i
++)
5533 if (switches
[i
].ordering
== 1)
5535 switches
[i
].ordering
= 0;
5540 /* Handle a %{ ... } construct. P points just inside the leading {.
5541 Returns a pointer one past the end of the brace block, or 0
5542 if we call do_spec_1 and that returns -1. */
5545 handle_braces (const char *p
)
5547 const char *atom
, *end_atom
;
5548 const char *d_atom
= NULL
, *d_end_atom
= NULL
;
5549 const char *orig
= p
;
5557 bool a_must_be_last
= false;
5558 bool ordered_set
= false;
5559 bool disjunct_set
= false;
5560 bool disj_matched
= false;
5561 bool disj_starred
= true;
5562 bool n_way_choice
= false;
5563 bool n_way_matched
= false;
5565 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
5572 /* Scan one "atom" (S in the description above of %{}, possibly
5573 with '!', '.', '@', ',', or '*' modifiers). */
5575 a_is_suffix
= false;
5576 a_is_starred
= false;
5577 a_is_negated
= false;
5578 a_is_spectype
= false;
5582 p
++, a_is_negated
= true;
5586 p
++, a_is_suffix
= true;
5588 p
++, a_is_spectype
= true;
5591 while (ISIDNUM(*p
) || *p
== '-' || *p
== '+' || *p
== '='
5592 || *p
== ',' || *p
== '.' || *p
== '@')
5597 p
++, a_is_starred
= 1;
5603 /* Substitute the switch(es) indicated by the current atom. */
5605 if (disjunct_set
|| n_way_choice
|| a_is_negated
|| a_is_suffix
5606 || a_is_spectype
|| atom
== end_atom
)
5609 mark_matching_switches (atom
, end_atom
, a_is_starred
);
5612 process_marked_switches ();
5616 /* Substitute some text if the current atom appears as a switch
5618 disjunct_set
= true;
5622 if (atom
== end_atom
)
5624 if (!n_way_choice
|| disj_matched
|| *p
== '|'
5625 || a_is_negated
|| a_is_suffix
|| a_is_spectype
5629 /* An empty term may appear as the last choice of an
5630 N-way choice set; it means "otherwise". */
5631 a_must_be_last
= true;
5632 disj_matched
= !n_way_matched
;
5633 disj_starred
= false;
5637 if ((a_is_suffix
|| a_is_spectype
) && a_is_starred
)
5641 disj_starred
= false;
5643 /* Don't bother testing this atom if we already have a
5645 if (!disj_matched
&& !n_way_matched
)
5648 a_matched
= input_suffix_matches (atom
, end_atom
);
5649 else if (a_is_spectype
)
5650 a_matched
= input_spec_matches (atom
, end_atom
);
5652 a_matched
= switch_matches (atom
, end_atom
, a_is_starred
);
5654 if (a_matched
!= a_is_negated
)
5656 disj_matched
= true;
5658 d_end_atom
= end_atom
;
5665 /* Found the body, that is, the text to substitute if the
5666 current disjunction matches. */
5667 p
= process_brace_body (p
+ 1, d_atom
, d_end_atom
, disj_starred
,
5668 disj_matched
&& !n_way_matched
);
5672 /* If we have an N-way choice, reset state for the next
5676 n_way_choice
= true;
5677 n_way_matched
|= disj_matched
;
5678 disj_matched
= false;
5679 disj_starred
= true;
5680 d_atom
= d_end_atom
= NULL
;
5689 while (*p
++ != '}');
5694 fatal_error ("braced spec %qs is invalid at %qc", orig
, *p
);
5699 /* Subroutine of handle_braces. Scan and process a brace substitution body
5700 (X in the description of %{} syntax). P points one past the colon;
5701 ATOM and END_ATOM bracket the first atom which was found to be true
5702 (present) in the current disjunction; STARRED indicates whether all
5703 the atoms in the current disjunction were starred (for syntax validation);
5704 MATCHED indicates whether the disjunction matched or not, and therefore
5705 whether or not the body is to be processed through do_spec_1 or just
5706 skipped. Returns a pointer to the closing } or ;, or 0 if do_spec_1
5710 process_brace_body (const char *p
, const char *atom
, const char *end_atom
,
5711 int starred
, int matched
)
5713 const char *body
, *end_body
;
5714 unsigned int nesting_level
;
5715 bool have_subst
= false;
5717 /* Locate the closing } or ;, honoring nested braces.
5718 Trim trailing whitespace. */
5727 if (!--nesting_level
)
5730 else if (*p
== ';' && nesting_level
== 1)
5732 else if (*p
== '%' && p
[1] == '*' && nesting_level
== 1)
5734 else if (*p
== '\0')
5740 while (end_body
[-1] == ' ' || end_body
[-1] == '\t')
5743 if (have_subst
&& !starred
)
5748 /* Copy the substitution body to permanent storage and execute it.
5749 If have_subst is false, this is a simple matter of running the
5750 body through do_spec_1... */
5751 char *string
= save_string (body
, end_body
- body
);
5754 if (do_spec_1 (string
, 0, NULL
) < 0)
5759 /* ... but if have_subst is true, we have to process the
5760 body once for each matching switch, with %* set to the
5761 variant part of the switch. */
5762 unsigned int hard_match_len
= end_atom
- atom
;
5765 for (i
= 0; i
< n_switches
; i
++)
5766 if (!strncmp (switches
[i
].part1
, atom
, hard_match_len
)
5767 && check_live_switch (i
, hard_match_len
))
5769 if (do_spec_1 (string
, 0,
5770 &switches
[i
].part1
[hard_match_len
]) < 0)
5772 /* Pass any arguments this switch has. */
5774 suffix_subst
= NULL
;
5782 fatal_error ("braced spec body %qs is invalid", body
);
5785 /* Return 0 iff switch number SWITCHNUM is obsoleted by a later switch
5786 on the command line. PREFIX_LENGTH is the length of XXX in an {XXX*}
5787 spec, or -1 if either exact match or %* is used.
5789 A -O switch is obsoleted by a later -O switch. A -f, -m, or -W switch
5790 whose value does not begin with "no-" is obsoleted by the same value
5791 with the "no-", similarly for a switch with the "no-" prefix. */
5794 check_live_switch (int switchnum
, int prefix_length
)
5796 const char *name
= switches
[switchnum
].part1
;
5799 /* If we already processed this switch and determined if it was
5800 live or not, return our past determination. */
5801 if (switches
[switchnum
].live_cond
!= 0)
5802 return ((switches
[switchnum
].live_cond
& SWITCH_LIVE
) != 0
5803 && (switches
[switchnum
].live_cond
& SWITCH_FALSE
) == 0
5804 && (switches
[switchnum
].live_cond
& SWITCH_IGNORE_PERMANENTLY
)
5807 /* In the common case of {<at-most-one-letter>*}, a negating
5808 switch would always match, so ignore that case. We will just
5809 send the conflicting switches to the compiler phase. */
5810 if (prefix_length
>= 0 && prefix_length
<= 1)
5813 /* Now search for duplicate in a manner that depends on the name. */
5817 for (i
= switchnum
+ 1; i
< n_switches
; i
++)
5818 if (switches
[i
].part1
[0] == 'O')
5820 switches
[switchnum
].validated
= 1;
5821 switches
[switchnum
].live_cond
= SWITCH_FALSE
;
5826 case 'W': case 'f': case 'm':
5827 if (! strncmp (name
+ 1, "no-", 3))
5829 /* We have Xno-YYY, search for XYYY. */
5830 for (i
= switchnum
+ 1; i
< n_switches
; i
++)
5831 if (switches
[i
].part1
[0] == name
[0]
5832 && ! strcmp (&switches
[i
].part1
[1], &name
[4]))
5834 switches
[switchnum
].validated
= 1;
5835 switches
[switchnum
].live_cond
= SWITCH_FALSE
;
5841 /* We have XYYY, search for Xno-YYY. */
5842 for (i
= switchnum
+ 1; i
< n_switches
; i
++)
5843 if (switches
[i
].part1
[0] == name
[0]
5844 && switches
[i
].part1
[1] == 'n'
5845 && switches
[i
].part1
[2] == 'o'
5846 && switches
[i
].part1
[3] == '-'
5847 && !strcmp (&switches
[i
].part1
[4], &name
[1]))
5849 switches
[switchnum
].validated
= 1;
5850 switches
[switchnum
].live_cond
= SWITCH_FALSE
;
5857 /* Otherwise the switch is live. */
5858 switches
[switchnum
].live_cond
|= SWITCH_LIVE
;
5862 /* Pass a switch to the current accumulating command
5863 in the same form that we received it.
5864 SWITCHNUM identifies the switch; it is an index into
5865 the vector of switches gcc received, which is `switches'.
5866 This cannot fail since it never finishes a command line.
5868 If OMIT_FIRST_WORD is nonzero, then we omit .part1 of the argument. */
5871 give_switch (int switchnum
, int omit_first_word
)
5873 if ((switches
[switchnum
].live_cond
& SWITCH_IGNORE
) != 0)
5876 if (!omit_first_word
)
5878 do_spec_1 ("-", 0, NULL
);
5879 do_spec_1 (switches
[switchnum
].part1
, 1, NULL
);
5882 if (switches
[switchnum
].args
!= 0)
5885 for (p
= switches
[switchnum
].args
; *p
; p
++)
5887 const char *arg
= *p
;
5889 do_spec_1 (" ", 0, NULL
);
5892 unsigned length
= strlen (arg
);
5895 while (length
-- && !IS_DIR_SEPARATOR (arg
[length
]))
5896 if (arg
[length
] == '.')
5898 (CONST_CAST(char *, arg
))[length
] = 0;
5902 do_spec_1 (arg
, 1, NULL
);
5904 (CONST_CAST(char *, arg
))[length
] = '.';
5905 do_spec_1 (suffix_subst
, 1, NULL
);
5908 do_spec_1 (arg
, 1, NULL
);
5912 do_spec_1 (" ", 0, NULL
);
5913 switches
[switchnum
].validated
= 1;
5916 /* Search for a file named NAME trying various prefixes including the
5917 user's -B prefix and some standard ones.
5918 Return the absolute file name found. If nothing is found, return NAME. */
5921 find_file (const char *name
)
5923 char *newname
= find_a_file (&startfile_prefixes
, name
, R_OK
, true);
5924 return newname
? newname
: name
;
5927 /* Determine whether a directory exists. If LINKER, return 0 for
5928 certain fixed names not needed by the linker. */
5931 is_directory (const char *path1
, bool linker
)
5938 /* Ensure the string ends with "/.". The resulting path will be a
5939 directory even if the given path is a symbolic link. */
5940 len1
= strlen (path1
);
5941 path
= (char *) alloca (3 + len1
);
5942 memcpy (path
, path1
, len1
);
5944 if (!IS_DIR_SEPARATOR (cp
[-1]))
5945 *cp
++ = DIR_SEPARATOR
;
5949 /* Exclude directories that the linker is known to search. */
5951 && IS_DIR_SEPARATOR (path
[0])
5953 && filename_ncmp (path
+ 1, "lib", 3) == 0)
5955 && filename_ncmp (path
+ 1, "usr", 3) == 0
5956 && IS_DIR_SEPARATOR (path
[4])
5957 && filename_ncmp (path
+ 5, "lib", 3) == 0)))
5960 return (stat (path
, &st
) >= 0 && S_ISDIR (st
.st_mode
));
5963 /* Set up the various global variables to indicate that we're processing
5964 the input file named FILENAME. */
5967 set_input (const char *filename
)
5971 gcc_input_filename
= filename
;
5972 input_filename_length
= strlen (gcc_input_filename
);
5973 input_basename
= lbasename (gcc_input_filename
);
5975 /* Find a suffix starting with the last period,
5976 and set basename_length to exclude that suffix. */
5977 basename_length
= strlen (input_basename
);
5978 suffixed_basename_length
= basename_length
;
5979 p
= input_basename
+ basename_length
;
5980 while (p
!= input_basename
&& *p
!= '.')
5982 if (*p
== '.' && p
!= input_basename
)
5984 basename_length
= p
- input_basename
;
5985 input_suffix
= p
+ 1;
5990 /* If a spec for 'g', 'u', or 'U' is seen with -save-temps then
5991 we will need to do a stat on the gcc_input_filename. The
5992 INPUT_STAT_SET signals that the stat is needed. */
5996 /* On fatal signals, delete all the temporary files. */
5999 fatal_signal (int signum
)
6001 signal (signum
, SIG_DFL
);
6002 delete_failure_queue ();
6003 delete_temp_files ();
6004 /* Get the same signal again, this time not handled,
6005 so its normal effect occurs. */
6006 kill (getpid (), signum
);
6009 /* Compare the contents of the two files named CMPFILE[0] and
6010 CMPFILE[1]. Return zero if they're identical, nonzero
6014 compare_files (char *cmpfile
[])
6017 FILE *temp
[2] = { NULL
, NULL
};
6023 void *map
[2] = { NULL
, NULL
};
6025 for (i
= 0; i
< 2; i
++)
6029 if (stat (cmpfile
[i
], &st
) < 0 || !S_ISREG (st
.st_mode
))
6031 error ("%s: could not determine length of compare-debug file %s",
6032 gcc_input_filename
, cmpfile
[i
]);
6037 length
[i
] = st
.st_size
;
6040 if (!ret
&& length
[0] != length
[1])
6042 error ("%s: -fcompare-debug failure (length)", gcc_input_filename
);
6047 for (i
= 0; i
< 2; i
++)
6049 int fd
= open (cmpfile
[i
], O_RDONLY
);
6052 error ("%s: could not open compare-debug file %s",
6053 gcc_input_filename
, cmpfile
[i
]);
6058 map
[i
] = mmap (NULL
, length
[i
], PROT_READ
, MAP_PRIVATE
, fd
, 0);
6061 if (map
[i
] == (void *) MAP_FAILED
)
6070 if (memcmp (map
[0], map
[1], length
[0]) != 0)
6072 error ("%s: -fcompare-debug failure", gcc_input_filename
);
6077 for (i
= 0; i
< 2; i
++)
6079 munmap ((caddr_t
) map
[i
], length
[i
]);
6088 for (i
= 0; i
< 2; i
++)
6090 temp
[i
] = fopen (cmpfile
[i
], "r");
6093 error ("%s: could not open compare-debug file %s",
6094 gcc_input_filename
, cmpfile
[i
]);
6100 if (!ret
&& temp
[0] && temp
[1])
6104 c0
= fgetc (temp
[0]);
6105 c1
= fgetc (temp
[1]);
6109 error ("%s: -fcompare-debug failure",
6110 gcc_input_filename
);
6119 for (i
= 1; i
>= 0; i
--)
6128 extern int main (int, char **);
6131 main (int argc
, char **argv
)
6135 int linker_was_run
= 0;
6136 int lang_n_infiles
= 0;
6137 int num_linker_inputs
= 0;
6138 char *explicit_link_files
;
6140 char *lto_wrapper_file
;
6142 struct user_specs
*uptr
;
6143 char **old_argv
= argv
;
6144 struct cl_decoded_option
*decoded_options
;
6145 unsigned int decoded_options_count
;
6147 p
= argv
[0] + strlen (argv
[0]);
6148 while (p
!= argv
[0] && !IS_DIR_SEPARATOR (p
[-1]))
6152 xmalloc_set_program_name (progname
);
6154 expandargv (&argc
, &argv
);
6156 /* Determine if any expansions were made. */
6157 if (argv
!= old_argv
)
6158 at_file_supplied
= true;
6160 /* Register the language-independent parameters. */
6161 global_init_params ();
6164 init_options_struct (&global_options
, &global_options_set
);
6166 decode_cmdline_options_to_array (argc
, CONST_CAST2 (const char **, char **,
6169 &decoded_options
, &decoded_options_count
);
6171 #ifdef GCC_DRIVER_HOST_INITIALIZATION
6172 /* Perform host dependent initialization when needed. */
6173 GCC_DRIVER_HOST_INITIALIZATION
;
6176 /* Unlock the stdio streams. */
6177 unlock_std_streams ();
6179 gcc_init_libintl ();
6181 diagnostic_initialize (global_dc
, 0);
6182 if (atexit (delete_temp_files
) != 0)
6183 fatal_error ("atexit failed");
6185 if (signal (SIGINT
, SIG_IGN
) != SIG_IGN
)
6186 signal (SIGINT
, fatal_signal
);
6188 if (signal (SIGHUP
, SIG_IGN
) != SIG_IGN
)
6189 signal (SIGHUP
, fatal_signal
);
6191 if (signal (SIGTERM
, SIG_IGN
) != SIG_IGN
)
6192 signal (SIGTERM
, fatal_signal
);
6194 if (signal (SIGPIPE
, SIG_IGN
) != SIG_IGN
)
6195 signal (SIGPIPE
, fatal_signal
);
6198 /* We *MUST* set SIGCHLD to SIG_DFL so that the wait4() call will
6199 receive the signal. A different setting is inheritable */
6200 signal (SIGCHLD
, SIG_DFL
);
6203 /* Parsing and gimplification sometimes need quite large stack.
6204 Increase stack size limits if possible. */
6205 stack_limit_increase (64 * 1024 * 1024);
6207 /* Allocate the argument vector. */
6210 obstack_init (&obstack
);
6212 /* Build multilib_select, et. al from the separate lines that make up each
6213 multilib selection. */
6215 const char *const *q
= multilib_raw
;
6218 obstack_init (&multilib_obstack
);
6219 while ((p
= *q
++) != (char *) 0)
6220 obstack_grow (&multilib_obstack
, p
, strlen (p
));
6222 obstack_1grow (&multilib_obstack
, 0);
6223 multilib_select
= XOBFINISH (&multilib_obstack
, const char *);
6225 q
= multilib_matches_raw
;
6226 while ((p
= *q
++) != (char *) 0)
6227 obstack_grow (&multilib_obstack
, p
, strlen (p
));
6229 obstack_1grow (&multilib_obstack
, 0);
6230 multilib_matches
= XOBFINISH (&multilib_obstack
, const char *);
6232 q
= multilib_exclusions_raw
;
6233 while ((p
= *q
++) != (char *) 0)
6234 obstack_grow (&multilib_obstack
, p
, strlen (p
));
6236 obstack_1grow (&multilib_obstack
, 0);
6237 multilib_exclusions
= XOBFINISH (&multilib_obstack
, const char *);
6240 for (i
= 0; i
< ARRAY_SIZE (multilib_defaults_raw
); i
++)
6243 obstack_1grow (&multilib_obstack
, ' ');
6244 obstack_grow (&multilib_obstack
,
6245 multilib_defaults_raw
[i
],
6246 strlen (multilib_defaults_raw
[i
]));
6250 obstack_1grow (&multilib_obstack
, 0);
6251 multilib_defaults
= XOBFINISH (&multilib_obstack
, const char *);
6254 #ifdef INIT_ENVIRONMENT
6255 /* Set up any other necessary machine specific environment variables. */
6256 xputenv (INIT_ENVIRONMENT
);
6259 /* Make a table of what switches there are (switches, n_switches).
6260 Make a table of specified input files (infiles, n_infiles).
6261 Decode switches that are handled locally. */
6263 process_command (decoded_options_count
, decoded_options
);
6265 /* Initialize the vector of specs to just the default.
6266 This means one element containing 0s, as a terminator. */
6268 compilers
= XNEWVAR (struct compiler
, sizeof default_compilers
);
6269 memcpy (compilers
, default_compilers
, sizeof default_compilers
);
6270 n_compilers
= n_default_compilers
;
6272 /* Read specs from a file if there is one. */
6274 machine_suffix
= concat (spec_machine
, dir_separator_str
,
6275 spec_version
, dir_separator_str
, NULL
);
6276 just_machine_suffix
= concat (spec_machine
, dir_separator_str
, NULL
);
6278 specs_file
= find_a_file (&startfile_prefixes
, "specs", R_OK
, true);
6279 /* Read the specs file unless it is a default one. */
6280 if (specs_file
!= 0 && strcmp (specs_file
, "specs"))
6281 read_specs (specs_file
, TRUE
);
6285 /* We need to check standard_exec_prefix/just_machine_suffix/specs
6286 for any override of as, ld and libraries. */
6287 specs_file
= (char *) alloca (strlen (standard_exec_prefix
)
6288 + strlen (just_machine_suffix
) + sizeof ("specs"));
6290 strcpy (specs_file
, standard_exec_prefix
);
6291 strcat (specs_file
, just_machine_suffix
);
6292 strcat (specs_file
, "specs");
6293 if (access (specs_file
, R_OK
) == 0)
6294 read_specs (specs_file
, TRUE
);
6296 /* Process any configure-time defaults specified for the command line
6297 options, via OPTION_DEFAULT_SPECS. */
6298 for (i
= 0; i
< ARRAY_SIZE (option_default_specs
); i
++)
6299 do_option_spec (option_default_specs
[i
].name
,
6300 option_default_specs
[i
].spec
);
6302 /* Process DRIVER_SELF_SPECS, adding any new options to the end
6303 of the command line. */
6305 for (i
= 0; i
< ARRAY_SIZE (driver_self_specs
); i
++)
6306 do_self_spec (driver_self_specs
[i
]);
6308 /* If not cross-compiling, look for executables in the standard
6310 if (*cross_compile
== '0')
6312 if (*md_exec_prefix
)
6314 add_prefix (&exec_prefixes
, md_exec_prefix
, "GCC",
6315 PREFIX_PRIORITY_LAST
, 0, 0);
6319 /* Process sysroot_suffix_spec. */
6320 if (*sysroot_suffix_spec
!= 0
6321 && do_spec_2 (sysroot_suffix_spec
) == 0)
6323 if (VEC_length (const_char_p
, argbuf
) > 1)
6324 error ("spec failure: more than one arg to SYSROOT_SUFFIX_SPEC");
6325 else if (VEC_length (const_char_p
, argbuf
) == 1)
6326 target_sysroot_suffix
= xstrdup (VEC_last (const_char_p
, argbuf
));
6329 #ifdef HAVE_LD_SYSROOT
6330 /* Pass the --sysroot option to the linker, if it supports that. If
6331 there is a sysroot_suffix_spec, it has already been processed by
6332 this point, so target_system_root really is the system root we
6334 if (target_system_root
)
6336 obstack_grow (&obstack
, "%(sysroot_spec) ", strlen ("%(sysroot_spec) "));
6337 obstack_grow0 (&obstack
, link_spec
, strlen (link_spec
));
6338 set_spec ("link", XOBFINISH (&obstack
, const char *));
6342 /* Process sysroot_hdrs_suffix_spec. */
6343 if (*sysroot_hdrs_suffix_spec
!= 0
6344 && do_spec_2 (sysroot_hdrs_suffix_spec
) == 0)
6346 if (VEC_length (const_char_p
, argbuf
) > 1)
6347 error ("spec failure: more than one arg to SYSROOT_HEADERS_SUFFIX_SPEC");
6348 else if (VEC_length (const_char_p
, argbuf
) == 1)
6349 target_sysroot_hdrs_suffix
= xstrdup (VEC_last (const_char_p
, argbuf
));
6352 /* Look for startfiles in the standard places. */
6353 if (*startfile_prefix_spec
!= 0
6354 && do_spec_2 (startfile_prefix_spec
) == 0
6355 && do_spec_1 (" ", 0, NULL
) == 0)
6359 FOR_EACH_VEC_ELT (const_char_p
, argbuf
, ndx
, arg
)
6360 add_sysrooted_prefix (&startfile_prefixes
, arg
, "BINUTILS",
6361 PREFIX_PRIORITY_LAST
, 0, 1);
6363 /* We should eventually get rid of all these and stick to
6364 startfile_prefix_spec exclusively. */
6365 else if (*cross_compile
== '0' || target_system_root
)
6367 if (*md_startfile_prefix
)
6368 add_sysrooted_prefix (&startfile_prefixes
, md_startfile_prefix
,
6369 "GCC", PREFIX_PRIORITY_LAST
, 0, 1);
6371 if (*md_startfile_prefix_1
)
6372 add_sysrooted_prefix (&startfile_prefixes
, md_startfile_prefix_1
,
6373 "GCC", PREFIX_PRIORITY_LAST
, 0, 1);
6375 /* If standard_startfile_prefix is relative, base it on
6376 standard_exec_prefix. This lets us move the installed tree
6377 as a unit. If GCC_EXEC_PREFIX is defined, base
6378 standard_startfile_prefix on that as well.
6380 If the prefix is relative, only search it for native compilers;
6381 otherwise we will search a directory containing host libraries. */
6382 if (IS_ABSOLUTE_PATH (standard_startfile_prefix
))
6383 add_sysrooted_prefix (&startfile_prefixes
,
6384 standard_startfile_prefix
, "BINUTILS",
6385 PREFIX_PRIORITY_LAST
, 0, 1);
6386 else if (*cross_compile
== '0')
6388 add_prefix (&startfile_prefixes
,
6389 concat (gcc_exec_prefix
6390 ? gcc_exec_prefix
: standard_exec_prefix
,
6392 standard_startfile_prefix
, NULL
),
6393 NULL
, PREFIX_PRIORITY_LAST
, 0, 1);
6396 /* Sysrooted prefixes are relocated because target_system_root is
6397 also relocated by gcc_exec_prefix. */
6398 if (*standard_startfile_prefix_1
)
6399 add_sysrooted_prefix (&startfile_prefixes
,
6400 standard_startfile_prefix_1
, "BINUTILS",
6401 PREFIX_PRIORITY_LAST
, 0, 1);
6402 if (*standard_startfile_prefix_2
)
6403 add_sysrooted_prefix (&startfile_prefixes
,
6404 standard_startfile_prefix_2
, "BINUTILS",
6405 PREFIX_PRIORITY_LAST
, 0, 1);
6408 /* Process any user specified specs in the order given on the command
6410 for (uptr
= user_specs_head
; uptr
; uptr
= uptr
->next
)
6412 char *filename
= find_a_file (&startfile_prefixes
, uptr
->filename
,
6414 read_specs (filename
? filename
: uptr
->filename
, FALSE
);
6417 /* Process any user self specs. */
6419 struct spec_list
*sl
;
6420 for (sl
= specs
; sl
; sl
= sl
->next
)
6421 if (sl
->name_len
== sizeof "self_spec" - 1
6422 && !strcmp (sl
->name
, "self_spec"))
6423 do_self_spec (*sl
->ptr_spec
);
6428 enum save_temps save
;
6430 if (!compare_debug_second
)
6432 n_switches_debug_check
[1] = n_switches
;
6433 n_switches_alloc_debug_check
[1] = n_switches_alloc
;
6434 switches_debug_check
[1] = XDUPVEC (struct switchstr
, switches
,
6437 do_self_spec ("%:compare-debug-self-opt()");
6438 n_switches_debug_check
[0] = n_switches
;
6439 n_switches_alloc_debug_check
[0] = n_switches_alloc
;
6440 switches_debug_check
[0] = switches
;
6442 n_switches
= n_switches_debug_check
[1];
6443 n_switches_alloc
= n_switches_alloc_debug_check
[1];
6444 switches
= switches_debug_check
[1];
6447 /* Avoid crash when computing %j in this early. */
6448 save
= save_temps_flag
;
6449 save_temps_flag
= SAVE_TEMPS_NONE
;
6451 compare_debug
= -compare_debug
;
6452 do_self_spec ("%:compare-debug-self-opt()");
6454 save_temps_flag
= save
;
6456 if (!compare_debug_second
)
6458 n_switches_debug_check
[1] = n_switches
;
6459 n_switches_alloc_debug_check
[1] = n_switches_alloc
;
6460 switches_debug_check
[1] = switches
;
6461 compare_debug
= -compare_debug
;
6462 n_switches
= n_switches_debug_check
[0];
6463 n_switches_alloc
= n_switches_debug_check
[0];
6464 switches
= switches_debug_check
[0];
6469 /* If we have a GCC_EXEC_PREFIX envvar, modify it for cpp's sake. */
6470 if (gcc_exec_prefix
)
6471 gcc_exec_prefix
= concat (gcc_exec_prefix
, spec_machine
, dir_separator_str
,
6472 spec_version
, dir_separator_str
, NULL
);
6474 /* Now we have the specs.
6475 Set the `valid' bits for switches that match anything in any spec. */
6477 validate_all_switches ();
6479 /* Now that we have the switches and the specs, set
6480 the subdirectory based on the options. */
6481 set_multilib_dir ();
6483 /* Set up to remember the pathname of gcc and any options
6484 needed for collect. We use argv[0] instead of progname because
6485 we need the complete pathname. */
6486 obstack_init (&collect_obstack
);
6487 obstack_grow (&collect_obstack
, "COLLECT_GCC=", sizeof ("COLLECT_GCC=") - 1);
6488 obstack_grow (&collect_obstack
, argv
[0], strlen (argv
[0]) + 1);
6489 xputenv (XOBFINISH (&collect_obstack
, char *));
6491 /* Set up to remember the pathname of the lto wrapper. */
6494 lto_wrapper_file
= NULL
;
6496 lto_wrapper_file
= find_a_file (&exec_prefixes
, "lto-wrapper",
6498 if (lto_wrapper_file
)
6500 lto_wrapper_spec
= lto_wrapper_file
;
6501 obstack_init (&collect_obstack
);
6502 obstack_grow (&collect_obstack
, "COLLECT_LTO_WRAPPER=",
6503 sizeof ("COLLECT_LTO_WRAPPER=") - 1);
6504 obstack_grow (&collect_obstack
, lto_wrapper_spec
,
6505 strlen (lto_wrapper_spec
) + 1);
6506 xputenv (XOBFINISH (&collect_obstack
, char *));
6509 /* Warn about any switches that no pass was interested in. */
6511 for (i
= 0; (int) i
< n_switches
; i
++)
6512 if (! switches
[i
].validated
)
6513 error ("unrecognized option %<-%s%>", switches
[i
].part1
);
6515 /* Obey some of the options. */
6517 if (print_search_dirs
)
6519 printf (_("install: %s%s\n"),
6520 gcc_exec_prefix
? gcc_exec_prefix
: standard_exec_prefix
,
6521 gcc_exec_prefix
? "" : machine_suffix
);
6522 printf (_("programs: %s\n"),
6523 build_search_list (&exec_prefixes
, "", false, false));
6524 printf (_("libraries: %s\n"),
6525 build_search_list (&startfile_prefixes
, "", false, true));
6529 if (print_file_name
)
6531 printf ("%s\n", find_file (print_file_name
));
6535 if (print_prog_name
)
6537 char *newname
= find_a_file (&exec_prefixes
, print_prog_name
, X_OK
, 0);
6538 printf ("%s\n", (newname
? newname
: print_prog_name
));
6542 if (print_multi_lib
)
6544 print_multilib_info ();
6548 if (print_multi_directory
)
6550 if (multilib_dir
== NULL
)
6553 printf ("%s\n", multilib_dir
);
6559 if (target_system_root
)
6561 if (target_sysroot_suffix
)
6562 printf ("%s%s\n", target_system_root
, target_sysroot_suffix
);
6564 printf ("%s\n", target_system_root
);
6569 if (print_multi_os_directory
)
6571 if (multilib_os_dir
== NULL
)
6574 printf ("%s\n", multilib_os_dir
);
6578 if (print_sysroot_headers_suffix
)
6580 if (*sysroot_hdrs_suffix_spec
)
6582 printf("%s\n", (target_sysroot_hdrs_suffix
6583 ? target_sysroot_hdrs_suffix
6588 /* The error status indicates that only one set of fixed
6589 headers should be built. */
6590 fatal_error ("not configured with sysroot headers suffix");
6593 if (print_help_list
)
6599 printf (_("\nFor bug reporting instructions, please see:\n"));
6600 printf ("%s.\n", bug_report_url
);
6605 /* We do not exit here. Instead we have created a fake input file
6606 called 'help-dummy' which needs to be compiled, and we pass this
6607 on the various sub-processes, along with the --help switch.
6608 Ensure their output appears after ours. */
6609 fputc ('\n', stdout
);
6615 printf (_("%s %s%s\n"), progname
, pkgversion_string
,
6617 printf ("Copyright %s 2012 Free Software Foundation, Inc.\n",
6619 fputs (_("This is free software; see the source for copying conditions. There is NO\n\
6620 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\n"),
6625 /* We do not exit here. We use the same mechanism of --help to print
6626 the version of the sub-processes. */
6627 fputc ('\n', stdout
);
6636 fnotice (stderr
, "Target: %s\n", spec_machine
);
6637 fnotice (stderr
, "Configured with: %s\n", configuration_arguments
);
6639 #ifdef THREAD_MODEL_SPEC
6640 /* We could have defined THREAD_MODEL_SPEC to "%*" by default,
6641 but there's no point in doing all this processing just to get
6642 thread_model back. */
6643 obstack_init (&obstack
);
6644 do_spec_1 (THREAD_MODEL_SPEC
, 0, thread_model
);
6645 obstack_1grow (&obstack
, '\0');
6646 thrmod
= XOBFINISH (&obstack
, const char *);
6648 thrmod
= thread_model
;
6651 fnotice (stderr
, "Thread model: %s\n", thrmod
);
6653 /* compiler_version is truncated at the first space when initialized
6654 from version string, so truncate version_string at the first space
6655 before comparing. */
6656 for (n
= 0; version_string
[n
]; n
++)
6657 if (version_string
[n
] == ' ')
6660 if (! strncmp (version_string
, compiler_version
, n
)
6661 && compiler_version
[n
] == 0)
6662 fnotice (stderr
, "gcc version %s %s\n", version_string
,
6665 fnotice (stderr
, "gcc driver version %s %sexecuting gcc version %s\n",
6666 version_string
, pkgversion_string
, compiler_version
);
6672 if (n_infiles
== added_libraries
)
6673 fatal_error ("no input files");
6678 /* Make a place to record the compiler output file names
6679 that correspond to the input files. */
6682 i
+= lang_specific_extra_outfiles
;
6683 outfiles
= XCNEWVEC (const char *, i
);
6685 /* Record which files were specified explicitly as link input. */
6687 explicit_link_files
= XCNEWVEC (char, n_infiles
);
6689 combine_inputs
= have_o
|| flag_wpa
;
6691 for (i
= 0; (int) i
< n_infiles
; i
++)
6693 const char *name
= infiles
[i
].name
;
6694 struct compiler
*compiler
= lookup_compiler (name
,
6696 infiles
[i
].language
);
6698 if (compiler
&& !(compiler
->combinable
))
6699 combine_inputs
= false;
6701 if (lang_n_infiles
> 0 && compiler
!= input_file_compiler
6702 && infiles
[i
].language
&& infiles
[i
].language
[0] != '*')
6703 infiles
[i
].incompiler
= compiler
;
6707 input_file_compiler
= compiler
;
6708 infiles
[i
].incompiler
= compiler
;
6712 /* Since there is no compiler for this input file, assume it is a
6714 explicit_link_files
[i
] = 1;
6715 infiles
[i
].incompiler
= NULL
;
6717 infiles
[i
].compiled
= false;
6718 infiles
[i
].preprocessed
= false;
6721 if (!combine_inputs
&& have_c
&& have_o
&& lang_n_infiles
> 1)
6722 fatal_error ("cannot specify -o with -c, -S or -E with multiple files");
6724 for (i
= 0; (int) i
< n_infiles
; i
++)
6726 int this_file_error
= 0;
6728 /* Tell do_spec what to substitute for %i. */
6730 input_file_number
= i
;
6731 set_input (infiles
[i
].name
);
6733 if (infiles
[i
].compiled
)
6736 /* Use the same thing in %o, unless cp->spec says otherwise. */
6738 outfiles
[i
] = gcc_input_filename
;
6740 /* Figure out which compiler from the file's suffix. */
6743 = lookup_compiler (infiles
[i
].name
, input_filename_length
,
6744 infiles
[i
].language
);
6746 if (input_file_compiler
)
6748 /* Ok, we found an applicable compiler. Run its spec. */
6750 if (input_file_compiler
->spec
[0] == '#')
6752 error ("%s: %s compiler not installed on this system",
6753 gcc_input_filename
, &input_file_compiler
->spec
[1]);
6754 this_file_error
= 1;
6760 free (debug_check_temp_file
[0]);
6761 debug_check_temp_file
[0] = NULL
;
6763 free (debug_check_temp_file
[1]);
6764 debug_check_temp_file
[1] = NULL
;
6767 value
= do_spec (input_file_compiler
->spec
);
6768 infiles
[i
].compiled
= true;
6770 this_file_error
= 1;
6771 else if (compare_debug
&& debug_check_temp_file
[0])
6774 inform (0, "recompiling with -fcompare-debug");
6776 compare_debug
= -compare_debug
;
6777 n_switches
= n_switches_debug_check
[1];
6778 n_switches_alloc
= n_switches_alloc_debug_check
[1];
6779 switches
= switches_debug_check
[1];
6781 value
= do_spec (input_file_compiler
->spec
);
6783 compare_debug
= -compare_debug
;
6784 n_switches
= n_switches_debug_check
[0];
6785 n_switches_alloc
= n_switches_alloc_debug_check
[0];
6786 switches
= switches_debug_check
[0];
6790 error ("during -fcompare-debug recompilation");
6791 this_file_error
= 1;
6794 gcc_assert (debug_check_temp_file
[1]
6795 && filename_cmp (debug_check_temp_file
[0],
6796 debug_check_temp_file
[1]));
6799 inform (0, "comparing final insns dumps");
6801 if (compare_files (debug_check_temp_file
))
6802 this_file_error
= 1;
6807 free (debug_check_temp_file
[0]);
6808 debug_check_temp_file
[0] = NULL
;
6810 free (debug_check_temp_file
[1]);
6811 debug_check_temp_file
[1] = NULL
;
6816 /* If this file's name does not contain a recognized suffix,
6817 record it as explicit linker input. */
6820 explicit_link_files
[i
] = 1;
6822 /* Clear the delete-on-failure queue, deleting the files in it
6823 if this compilation failed. */
6825 if (this_file_error
)
6827 delete_failure_queue ();
6830 /* If this compilation succeeded, don't delete those files later. */
6831 clear_failure_queue ();
6834 /* Reset the input file name to the first compile/object file name, for use
6835 with %b in LINK_SPEC. We use the first input file that we can find
6836 a compiler to compile it instead of using infiles.language since for
6837 languages other than C we use aliases that we then lookup later. */
6842 for (i
= 0; i
< n_infiles
; i
++)
6843 if (infiles
[i
].incompiler
6844 || (infiles
[i
].language
&& infiles
[i
].language
[0] != '*'))
6846 set_input (infiles
[i
].name
);
6853 /* Make sure INPUT_FILE_NUMBER points to first available open
6855 input_file_number
= n_infiles
;
6856 if (lang_specific_pre_link ())
6860 /* Determine if there are any linker input files. */
6861 num_linker_inputs
= 0;
6862 for (i
= 0; (int) i
< n_infiles
; i
++)
6863 if (explicit_link_files
[i
] || outfiles
[i
] != NULL
)
6864 num_linker_inputs
++;
6866 /* Run ld to link all the compiler output files. */
6868 if (num_linker_inputs
> 0 && !seen_error () && print_subprocess_help
< 2)
6870 int tmp
= execution_count
;
6874 #if HAVE_LTO_PLUGIN > 0
6875 #if HAVE_LTO_PLUGIN == 2
6876 const char *fno_use_linker_plugin
= "fno-use-linker-plugin";
6878 const char *fuse_linker_plugin
= "fuse-linker-plugin";
6882 /* We'll use ld if we can't find collect2. */
6883 if (! strcmp (linker_name_spec
, "collect2"))
6885 char *s
= find_a_file (&exec_prefixes
, "collect2", X_OK
, false);
6887 linker_name_spec
= "ld";
6890 #if HAVE_LTO_PLUGIN > 0
6891 #if HAVE_LTO_PLUGIN == 2
6892 if (!switch_matches (fno_use_linker_plugin
,
6893 fno_use_linker_plugin
6894 + strlen (fno_use_linker_plugin
), 0))
6896 if (switch_matches (fuse_linker_plugin
,
6898 + strlen (fuse_linker_plugin
), 0))
6901 linker_plugin_file_spec
= find_a_file (&exec_prefixes
,
6902 LTOPLUGINSONAME
, R_OK
,
6904 if (!linker_plugin_file_spec
)
6905 fatal_error ("-fuse-linker-plugin, but %s not found",
6909 lto_gcc_spec
= argv
[0];
6912 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
6914 putenv_from_prefixes (&exec_prefixes
, "COMPILER_PATH", false);
6915 putenv_from_prefixes (&startfile_prefixes
, LIBRARY_PATH_ENV
, true);
6917 if (print_subprocess_help
== 1)
6919 printf (_("\nLinker options\n==============\n\n"));
6920 printf (_("Use \"-Wl,OPTION\" to pass \"OPTION\""
6921 " to the linker.\n\n"));
6924 value
= do_spec (link_command_spec
);
6927 linker_was_run
= (tmp
!= execution_count
);
6930 /* If options said don't run linker,
6931 complain about input files to be given to the linker. */
6933 if (! linker_was_run
&& !seen_error ())
6934 for (i
= 0; (int) i
< n_infiles
; i
++)
6935 if (explicit_link_files
[i
]
6936 && !(infiles
[i
].language
&& infiles
[i
].language
[0] == '*'))
6937 warning (0, "%s: linker input file unused because linking not done",
6940 /* Delete some or all of the temporary files we made. */
6943 delete_failure_queue ();
6944 delete_temp_files ();
6946 if (print_help_list
)
6948 printf (("\nFor bug reporting instructions, please see:\n"));
6949 printf ("%s\n", bug_report_url
);
6953 return (signal_count
!= 0 ? 2
6954 : seen_error () ? (pass_exit_codes
? greatest_status
: 1)
6958 /* Find the proper compilation spec for the file name NAME,
6959 whose length is LENGTH. LANGUAGE is the specified language,
6960 or 0 if this file is to be passed to the linker. */
6962 static struct compiler
*
6963 lookup_compiler (const char *name
, size_t length
, const char *language
)
6965 struct compiler
*cp
;
6967 /* If this was specified by the user to be a linker input, indicate that. */
6968 if (language
!= 0 && language
[0] == '*')
6971 /* Otherwise, look for the language, if one is spec'd. */
6974 for (cp
= compilers
+ n_compilers
- 1; cp
>= compilers
; cp
--)
6975 if (cp
->suffix
[0] == '@' && !strcmp (cp
->suffix
+ 1, language
))
6978 error ("language %s not recognized", language
);
6982 /* Look for a suffix. */
6983 for (cp
= compilers
+ n_compilers
- 1; cp
>= compilers
; cp
--)
6985 if (/* The suffix `-' matches only the file name `-'. */
6986 (!strcmp (cp
->suffix
, "-") && !strcmp (name
, "-"))
6987 || (strlen (cp
->suffix
) < length
6988 /* See if the suffix matches the end of NAME. */
6989 && !strcmp (cp
->suffix
,
6990 name
+ length
- strlen (cp
->suffix
))
6995 #if defined (OS2) ||defined (HAVE_DOS_BASED_FILE_SYSTEM)
6996 /* Look again, but case-insensitively this time. */
6998 for (cp
= compilers
+ n_compilers
- 1; cp
>= compilers
; cp
--)
7000 if (/* The suffix `-' matches only the file name `-'. */
7001 (!strcmp (cp
->suffix
, "-") && !strcmp (name
, "-"))
7002 || (strlen (cp
->suffix
) < length
7003 /* See if the suffix matches the end of NAME. */
7004 && ((!strcmp (cp
->suffix
,
7005 name
+ length
- strlen (cp
->suffix
))
7006 || !strpbrk (cp
->suffix
, "ABCDEFGHIJKLMNOPQRSTUVWXYZ"))
7007 && !strcasecmp (cp
->suffix
,
7008 name
+ length
- strlen (cp
->suffix
)))
7014 if (cp
>= compilers
)
7016 if (cp
->spec
[0] != '@')
7017 /* A non-alias entry: return it. */
7020 /* An alias entry maps a suffix to a language.
7021 Search for the language; pass 0 for NAME and LENGTH
7022 to avoid infinite recursion if language not found. */
7023 return lookup_compiler (NULL
, 0, cp
->spec
+ 1);
7029 save_string (const char *s
, int len
)
7031 char *result
= XNEWVEC (char, len
+ 1);
7033 memcpy (result
, s
, len
);
7039 pfatal_with_name (const char *name
)
7041 perror_with_name (name
);
7042 delete_temp_files ();
7047 perror_with_name (const char *name
)
7049 error ("%s: %m", name
);
7053 validate_switches_from_spec (const char *spec
)
7055 const char *p
= spec
;
7058 if (c
== '%' && (*p
== '{' || *p
== '<' || (*p
== 'W' && *++p
== '{')))
7059 /* We have a switch spec. */
7060 p
= validate_switches (p
+ 1);
7064 validate_all_switches (void)
7066 struct compiler
*comp
;
7067 struct spec_list
*spec
;
7069 for (comp
= compilers
; comp
->spec
; comp
++)
7070 validate_switches_from_spec (comp
->spec
);
7072 /* Look through the linked list of specs read from the specs file. */
7073 for (spec
= specs
; spec
; spec
= spec
->next
)
7074 validate_switches_from_spec (*spec
->ptr_spec
);
7076 validate_switches_from_spec (link_command_spec
);
7079 /* Look at the switch-name that comes after START
7080 and mark as valid all supplied switches that match it. */
7083 validate_switches (const char *start
)
7085 const char *p
= start
;
7089 bool suffix
= false;
7090 bool starred
= false;
7092 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
7101 if (*p
== '.' || *p
== ',')
7105 while (ISIDNUM (*p
) || *p
== '-' || *p
== '+' || *p
== '='
7106 || *p
== ',' || *p
== '.' || *p
== '@')
7111 starred
= true, p
++;
7117 /* Mark all matching switches as valid. */
7118 for (i
= 0; i
< n_switches
; i
++)
7119 if (!strncmp (switches
[i
].part1
, atom
, len
)
7120 && (starred
|| switches
[i
].part1
[len
] == 0))
7121 switches
[i
].validated
= 1;
7125 if (*p
&& (p
[-1] == '|' || p
[-1] == '&'))
7128 if (*p
&& p
[-1] == ':')
7130 while (*p
&& *p
!= ';' && *p
!= '}')
7135 if (*p
== '{' || *p
== '<')
7136 p
= validate_switches (p
+1);
7137 else if (p
[0] == 'W' && p
[1] == '{')
7138 p
= validate_switches (p
+2);
7145 if (*p
&& p
[-1] == ';')
7159 static struct mdswitchstr
*mdswitches
;
7160 static int n_mdswitches
;
7162 /* Check whether a particular argument was used. The first time we
7163 canonicalize the switches to keep only the ones we care about. */
7166 used_arg (const char *p
, int len
)
7171 const char *replace
;
7176 static struct mswitchstr
*mswitches
;
7177 static int n_mswitches
;
7182 struct mswitchstr
*matches
;
7186 /* Break multilib_matches into the component strings of string
7187 and replacement string. */
7188 for (q
= multilib_matches
; *q
!= '\0'; q
++)
7193 = (struct mswitchstr
*) alloca ((sizeof (struct mswitchstr
)) * cnt
);
7195 q
= multilib_matches
;
7204 fatal_error ("multilib spec %qs is invalid",
7209 matches
[i
].len
= q
- matches
[i
].str
;
7211 matches
[i
].replace
= ++q
;
7212 while (*q
!= ';' && *q
!= '\0')
7215 goto invalid_matches
;
7218 matches
[i
].rep_len
= q
- matches
[i
].replace
;
7224 /* Now build a list of the replacement string for switches that we care
7225 about. Make sure we allocate at least one entry. This prevents
7226 xmalloc from calling fatal, and prevents us from re-executing this
7229 = XNEWVEC (struct mswitchstr
, n_mdswitches
+ (n_switches
? n_switches
: 1));
7230 for (i
= 0; i
< n_switches
; i
++)
7231 if ((switches
[i
].live_cond
& SWITCH_IGNORE
) == 0)
7233 int xlen
= strlen (switches
[i
].part1
);
7234 for (j
= 0; j
< cnt
; j
++)
7235 if (xlen
== matches
[j
].len
7236 && ! strncmp (switches
[i
].part1
, matches
[j
].str
, xlen
))
7238 mswitches
[n_mswitches
].str
= matches
[j
].replace
;
7239 mswitches
[n_mswitches
].len
= matches
[j
].rep_len
;
7240 mswitches
[n_mswitches
].replace
= (char *) 0;
7241 mswitches
[n_mswitches
].rep_len
= 0;
7247 /* Add MULTILIB_DEFAULTS switches too, as long as they were not present
7248 on the command line nor any options mutually incompatible with
7250 for (i
= 0; i
< n_mdswitches
; i
++)
7254 for (q
= multilib_options
; *q
!= '\0'; q
++)
7260 while (strncmp (q
, mdswitches
[i
].str
, mdswitches
[i
].len
) != 0
7261 || strchr (" /", q
[mdswitches
[i
].len
]) == NULL
)
7263 while (*q
!= ' ' && *q
!= '/' && *q
!= '\0')
7270 if (*q
!= ' ' && *q
!= '\0')
7272 while (*r
!= ' ' && *r
!= '\0')
7275 while (*q
!= ' ' && *q
!= '/' && *q
!= '\0')
7278 if (used_arg (r
, q
- r
))
7283 mswitches
[n_mswitches
].str
= mdswitches
[i
].str
;
7284 mswitches
[n_mswitches
].len
= mdswitches
[i
].len
;
7285 mswitches
[n_mswitches
].replace
= (char *) 0;
7286 mswitches
[n_mswitches
].rep_len
= 0;
7299 for (i
= 0; i
< n_mswitches
; i
++)
7300 if (len
== mswitches
[i
].len
&& ! strncmp (p
, mswitches
[i
].str
, len
))
7307 default_arg (const char *p
, int len
)
7311 for (i
= 0; i
< n_mdswitches
; i
++)
7312 if (len
== mdswitches
[i
].len
&& ! strncmp (p
, mdswitches
[i
].str
, len
))
7318 /* Work out the subdirectory to use based on the options. The format of
7319 multilib_select is a list of elements. Each element is a subdirectory
7320 name followed by a list of options followed by a semicolon. The format
7321 of multilib_exclusions is the same, but without the preceding
7322 directory. First gcc will check the exclusions, if none of the options
7323 beginning with an exclamation point are present, and all of the other
7324 options are present, then we will ignore this completely. Passing
7325 that, gcc will consider each multilib_select in turn using the same
7326 rules for matching the options. If a match is found, that subdirectory
7330 set_multilib_dir (void)
7333 unsigned int this_path_len
;
7334 const char *this_path
, *this_arg
;
7335 const char *start
, *end
;
7337 int ok
, ndfltok
, first
;
7340 start
= multilib_defaults
;
7341 while (*start
== ' ' || *start
== '\t')
7343 while (*start
!= '\0')
7346 while (*start
!= ' ' && *start
!= '\t' && *start
!= '\0')
7348 while (*start
== ' ' || *start
== '\t')
7356 mdswitches
= XNEWVEC (struct mdswitchstr
, n_mdswitches
);
7357 for (start
= multilib_defaults
; *start
!= '\0'; start
= end
+ 1)
7359 while (*start
== ' ' || *start
== '\t')
7365 for (end
= start
+ 1;
7366 *end
!= ' ' && *end
!= '\t' && *end
!= '\0'; end
++)
7369 obstack_grow (&multilib_obstack
, start
, end
- start
);
7370 obstack_1grow (&multilib_obstack
, 0);
7371 mdswitches
[i
].str
= XOBFINISH (&multilib_obstack
, const char *);
7372 mdswitches
[i
++].len
= end
- start
;
7379 p
= multilib_exclusions
;
7382 /* Ignore newlines. */
7389 /* Check the arguments. */
7396 fatal_error ("multilib exclusions %qs is invalid",
7397 multilib_exclusions
);
7407 while (*p
!= ' ' && *p
!= ';')
7410 goto invalid_exclusions
;
7414 if (*this_arg
!= '!')
7422 ok
= used_arg (this_arg
, p
- this_arg
);
7437 p
= multilib_select
;
7440 /* Ignore newlines. */
7447 /* Get the initial path. */
7454 fatal_error ("multilib select %qs is invalid",
7459 this_path_len
= p
- this_path
;
7461 /* Check the arguments. */
7468 goto invalid_select
;
7477 while (*p
!= ' ' && *p
!= ';')
7480 goto invalid_select
;
7484 if (*this_arg
!= '!')
7492 /* If this is a default argument, we can just ignore it.
7493 This is true even if this_arg begins with '!'. Beginning
7494 with '!' does not mean that this argument is necessarily
7495 inappropriate for this library: it merely means that
7496 there is a more specific library which uses this
7497 argument. If this argument is a default, we need not
7498 consider that more specific library. */
7499 ok
= used_arg (this_arg
, p
- this_arg
);
7506 if (default_arg (this_arg
, p
- this_arg
))
7515 if (this_path_len
!= 1
7516 || this_path
[0] != '.')
7518 char *new_multilib_dir
= XNEWVEC (char, this_path_len
+ 1);
7521 strncpy (new_multilib_dir
, this_path
, this_path_len
);
7522 new_multilib_dir
[this_path_len
] = '\0';
7523 q
= strchr (new_multilib_dir
, ':');
7526 multilib_dir
= new_multilib_dir
;
7533 const char *q
= this_path
, *end
= this_path
+ this_path_len
;
7535 while (q
< end
&& *q
!= ':')
7539 char *new_multilib_os_dir
= XNEWVEC (char, end
- q
);
7540 memcpy (new_multilib_os_dir
, q
+ 1, end
- q
- 1);
7541 new_multilib_os_dir
[end
- q
- 1] = '\0';
7542 multilib_os_dir
= new_multilib_os_dir
;
7550 if (multilib_dir
== NULL
&& multilib_os_dir
!= NULL
7551 && strcmp (multilib_os_dir
, ".") == 0)
7553 free (CONST_CAST (char *, multilib_os_dir
));
7554 multilib_os_dir
= NULL
;
7556 else if (multilib_dir
!= NULL
&& multilib_os_dir
== NULL
)
7557 multilib_os_dir
= multilib_dir
;
7560 /* Print out the multiple library subdirectory selection
7561 information. This prints out a series of lines. Each line looks
7562 like SUBDIRECTORY;@OPTION@OPTION, with as many options as is
7563 required. Only the desired options are printed out, the negative
7564 matches. The options are print without a leading dash. There are
7565 no spaces to make it easy to use the information in the shell.
7566 Each subdirectory is printed only once. This assumes the ordering
7567 generated by the genmultilib script. Also, we leave out ones that match
7571 print_multilib_info (void)
7573 const char *p
= multilib_select
;
7574 const char *last_path
= 0, *this_path
;
7576 unsigned int last_path_len
= 0;
7581 /* Ignore newlines. */
7588 /* Get the initial path. */
7595 fatal_error ("multilib select %qs is invalid", multilib_select
);
7601 /* When --disable-multilib was used but target defines
7602 MULTILIB_OSDIRNAMES, entries starting with .: are there just
7603 to find multilib_os_dir, so skip them from output. */
7604 if (this_path
[0] == '.' && this_path
[1] == ':')
7607 /* Check for matches with the multilib_exclusions. We don't bother
7608 with the '!' in either list. If any of the exclusion rules match
7609 all of its options with the select rule, we skip it. */
7611 const char *e
= multilib_exclusions
;
7612 const char *this_arg
;
7617 /* Ignore newlines. */
7624 /* Check the arguments. */
7633 fatal_error ("multilib exclusion %qs is invalid",
7634 multilib_exclusions
);
7645 while (*e
!= ' ' && *e
!= ';')
7648 goto invalid_exclusion
;
7656 int len
= e
- this_arg
;
7659 goto invalid_select
;
7663 while (*q
!= ' ' && *q
!= ';')
7666 goto invalid_select
;
7670 if (! strncmp (arg
, this_arg
,
7671 (len
< q
- arg
) ? q
- arg
: len
)
7672 || default_arg (this_arg
, e
- this_arg
))
7702 /* If this is a duplicate, skip it. */
7703 skip
= (last_path
!= 0
7704 && (unsigned int) (p
- this_path
) == last_path_len
7705 && ! filename_ncmp (last_path
, this_path
, last_path_len
));
7707 last_path
= this_path
;
7708 last_path_len
= p
- this_path
;
7711 /* If this directory requires any default arguments, we can skip
7712 it. We will already have printed a directory identical to
7713 this one which does not require that default argument. */
7724 goto invalid_select
;
7731 while (*q
!= ' ' && *q
!= ';')
7734 goto invalid_select
;
7739 && default_arg (arg
, q
- arg
))
7754 for (p1
= last_path
; p1
< p
&& *p1
!= ':'; p1
++)
7765 goto invalid_select
;
7773 use_arg
= *p
!= '!';
7778 while (*p
!= ' ' && *p
!= ';')
7781 goto invalid_select
;
7793 /* If there are extra options, print them now. */
7794 if (multilib_extra
&& *multilib_extra
)
7796 int print_at
= TRUE
;
7799 for (q
= multilib_extra
; *q
!= '\0'; q
++)
7820 /* getenv built-in spec function.
7822 Returns the value of the environment variable given by its first
7823 argument, concatenated with the second argument. If the
7824 environment variable is not defined, a fatal error is issued. */
7827 getenv_spec_function (int argc
, const char **argv
)
7837 value
= getenv (argv
[0]);
7839 fatal_error ("environment variable %qs not defined", argv
[0]);
7841 /* We have to escape every character of the environment variable so
7842 they are not interpreted as active spec characters. A
7843 particularly painful case is when we are reading a variable
7844 holding a windows path complete with \ separators. */
7845 len
= strlen (value
) * 2 + strlen (argv
[1]) + 1;
7846 result
= XNEWVAR (char, len
);
7847 for (ptr
= result
; *value
; ptr
+= 2)
7853 strcpy (ptr
, argv
[1]);
7858 /* if-exists built-in spec function.
7860 Checks to see if the file specified by the absolute pathname in
7861 ARGS exists. Returns that pathname if found.
7863 The usual use for this function is to check for a library file
7864 (whose name has been expanded with %s). */
7867 if_exists_spec_function (int argc
, const char **argv
)
7869 /* Must have only one argument. */
7870 if (argc
== 1 && IS_ABSOLUTE_PATH (argv
[0]) && ! access (argv
[0], R_OK
))
7876 /* if-exists-else built-in spec function.
7878 This is like if-exists, but takes an additional argument which
7879 is returned if the first argument does not exist. */
7882 if_exists_else_spec_function (int argc
, const char **argv
)
7884 /* Must have exactly two arguments. */
7888 if (IS_ABSOLUTE_PATH (argv
[0]) && ! access (argv
[0], R_OK
))
7894 /* replace-outfile built-in spec function.
7896 This looks for the first argument in the outfiles array's name and
7897 replaces it with the second argument. */
7900 replace_outfile_spec_function (int argc
, const char **argv
)
7903 /* Must have exactly two arguments. */
7907 for (i
= 0; i
< n_infiles
; i
++)
7909 if (outfiles
[i
] && !filename_cmp (outfiles
[i
], argv
[0]))
7910 outfiles
[i
] = xstrdup (argv
[1]);
7915 /* remove-outfile built-in spec function.
7917 * This looks for the first argument in the outfiles array's name and
7921 remove_outfile_spec_function (int argc
, const char **argv
)
7924 /* Must have exactly one argument. */
7928 for (i
= 0; i
< n_infiles
; i
++)
7930 if (outfiles
[i
] && !filename_cmp (outfiles
[i
], argv
[0]))
7936 /* Given two version numbers, compares the two numbers.
7937 A version number must match the regular expression
7938 ([1-9][0-9]*|0)(\.([1-9][0-9]*|0))*
7941 compare_version_strings (const char *v1
, const char *v2
)
7946 if (regcomp (&r
, "^([1-9][0-9]*|0)(\\.([1-9][0-9]*|0))*$",
7947 REG_EXTENDED
| REG_NOSUB
) != 0)
7949 rresult
= regexec (&r
, v1
, 0, NULL
, 0);
7950 if (rresult
== REG_NOMATCH
)
7951 fatal_error ("invalid version number %qs", v1
);
7952 else if (rresult
!= 0)
7954 rresult
= regexec (&r
, v2
, 0, NULL
, 0);
7955 if (rresult
== REG_NOMATCH
)
7956 fatal_error ("invalid version number %qs", v2
);
7957 else if (rresult
!= 0)
7960 return strverscmp (v1
, v2
);
7964 /* version_compare built-in spec function.
7966 This takes an argument of the following form:
7968 <comparison-op> <arg1> [<arg2>] <switch> <result>
7970 and produces "result" if the comparison evaluates to true,
7971 and nothing if it doesn't.
7973 The supported <comparison-op> values are:
7975 >= true if switch is a later (or same) version than arg1
7977 < true if switch is an earlier version than arg1
7979 >< true if switch is arg1 or later, and earlier than arg2
7980 <> true if switch is earlier than arg1 or is arg2 or later
7982 If the switch is not present, the condition is false unless
7983 the first character of the <comparison-op> is '!'.
7986 %:version-compare(>= 10.3 mmacosx-version-min= -lmx)
7987 adds -lmx if -mmacosx-version-min=10.3.9 was passed. */
7990 version_compare_spec_function (int argc
, const char **argv
)
7994 const char *switch_value
= NULL
;
7999 fatal_error ("too few arguments to %%:version-compare");
8000 if (argv
[0][0] == '\0')
8002 if ((argv
[0][1] == '<' || argv
[0][1] == '>') && argv
[0][0] != '!')
8004 if (argc
!= nargs
+ 3)
8005 fatal_error ("too many arguments to %%:version-compare");
8007 switch_len
= strlen (argv
[nargs
+ 1]);
8008 for (i
= 0; i
< n_switches
; i
++)
8009 if (!strncmp (switches
[i
].part1
, argv
[nargs
+ 1], switch_len
)
8010 && check_live_switch (i
, switch_len
))
8011 switch_value
= switches
[i
].part1
+ switch_len
;
8013 if (switch_value
== NULL
)
8017 comp1
= compare_version_strings (switch_value
, argv
[1]);
8019 comp2
= compare_version_strings (switch_value
, argv
[2]);
8021 comp2
= -1; /* This value unused. */
8024 switch (argv
[0][0] << 8 | argv
[0][1])
8026 case '>' << 8 | '=':
8027 result
= comp1
>= 0;
8029 case '!' << 8 | '<':
8030 result
= comp1
>= 0 || switch_value
== NULL
;
8035 case '!' << 8 | '>':
8036 result
= comp1
< 0 || switch_value
== NULL
;
8038 case '>' << 8 | '<':
8039 result
= comp1
>= 0 && comp2
< 0;
8041 case '<' << 8 | '>':
8042 result
= comp1
< 0 || comp2
>= 0;
8046 fatal_error ("unknown operator %qs in %%:version-compare", argv
[0]);
8051 return argv
[nargs
+ 2];
8054 /* %:include builtin spec function. This differs from %include in that it
8055 can be nested inside a spec, and thus be conditionalized. It takes
8056 one argument, the filename, and looks for it in the startfile path.
8057 The result is always NULL, i.e. an empty expansion. */
8060 include_spec_function (int argc
, const char **argv
)
8067 file
= find_a_file (&startfile_prefixes
, argv
[0], R_OK
, true);
8068 read_specs (file
? file
: argv
[0], FALSE
);
8073 /* %:find-file spec function. This function replaces its argument by
8074 the file found through find_file, that is the -print-file-name gcc
8077 find_file_spec_function (int argc
, const char **argv
)
8084 file
= find_file (argv
[0]);
8089 /* %:find-plugindir spec function. This function replaces its argument
8090 by the -iplugindir=<dir> option. `dir' is found through find_file, that
8091 is the -print-file-name gcc program option. */
8093 find_plugindir_spec_function (int argc
, const char **argv ATTRIBUTE_UNUSED
)
8100 option
= concat ("-iplugindir=", find_file ("plugin"), NULL
);
8105 /* %:print-asm-header spec function. Print a banner to say that the
8106 following output is from the assembler. */
8109 print_asm_header_spec_function (int arg ATTRIBUTE_UNUSED
,
8110 const char **argv ATTRIBUTE_UNUSED
)
8112 printf (_("Assembler options\n=================\n\n"));
8113 printf (_("Use \"-Wa,OPTION\" to pass \"OPTION\" to the assembler.\n\n"));
8118 /* Get a random number for -frandom-seed */
8120 static unsigned HOST_WIDE_INT
8121 get_random_number (void)
8123 unsigned HOST_WIDE_INT ret
= 0;
8126 fd
= open ("/dev/urandom", O_RDONLY
);
8129 read (fd
, &ret
, sizeof (HOST_WIDE_INT
));
8135 /* Get some more or less random data. */
8136 #ifdef HAVE_GETTIMEOFDAY
8140 gettimeofday (&tv
, NULL
);
8141 ret
= tv
.tv_sec
* 1000 + tv
.tv_usec
/ 1000;
8145 time_t now
= time (NULL
);
8147 if (now
!= (time_t)-1)
8148 ret
= (unsigned) now
;
8152 return ret
^ getpid();
8155 /* %:compare-debug-dump-opt spec function. Save the last argument,
8156 expected to be the last -fdump-final-insns option, or generate a
8160 compare_debug_dump_opt_spec_function (int arg
,
8161 const char **argv ATTRIBUTE_UNUSED
)
8166 static char random_seed
[HOST_BITS_PER_WIDE_INT
/ 4 + 3];
8169 fatal_error ("too many arguments to %%:compare-debug-dump-opt");
8171 do_spec_2 ("%{fdump-final-insns=*:%*}");
8172 do_spec_1 (" ", 0, NULL
);
8174 if (VEC_length (const_char_p
, argbuf
) > 0
8175 && strcmp (argv
[VEC_length (const_char_p
, argbuf
) - 1], "."))
8180 name
= xstrdup (argv
[VEC_length (const_char_p
, argbuf
) - 1]);
8185 const char *ext
= NULL
;
8187 if (VEC_length (const_char_p
, argbuf
) > 0)
8189 do_spec_2 ("%{o*:%*}%{!o:%{!S:%b%O}%{S:%b.s}}");
8192 else if (!compare_debug
)
8195 do_spec_2 ("%g.gkd");
8197 do_spec_1 (" ", 0, NULL
);
8199 gcc_assert (VEC_length (const_char_p
, argbuf
) > 0);
8201 name
= concat (VEC_last (const_char_p
, argbuf
), ext
, NULL
);
8203 ret
= concat ("-fdump-final-insns=", name
, NULL
);
8206 which
= compare_debug
< 0;
8207 debug_check_temp_file
[which
] = name
;
8211 unsigned HOST_WIDE_INT value
= get_random_number ();
8213 sprintf (random_seed
, HOST_WIDE_INT_PRINT_HEX
, value
);
8217 ret
= concat ("%{!frandom-seed=*:-frandom-seed=", random_seed
, "} ",
8226 static const char *debug_auxbase_opt
;
8228 /* %:compare-debug-self-opt spec function. Expands to the options
8229 that are to be passed in the second compilation of
8233 compare_debug_self_opt_spec_function (int arg
,
8234 const char **argv ATTRIBUTE_UNUSED
)
8237 fatal_error ("too many arguments to %%:compare-debug-self-opt");
8239 if (compare_debug
>= 0)
8242 do_spec_2 ("%{c|S:%{o*:%*}}");
8243 do_spec_1 (" ", 0, NULL
);
8245 if (VEC_length (const_char_p
, argbuf
) > 0)
8246 debug_auxbase_opt
= concat ("-auxbase-strip ",
8247 VEC_last (const_char_p
, argbuf
),
8250 debug_auxbase_opt
= NULL
;
8253 %<o %<MD %<MMD %<MF* %<MG %<MP %<MQ* %<MT* \
8254 %<fdump-final-insns=* -w -S -o %j \
8255 %{!fcompare-debug-second:-fcompare-debug-second} \
8256 ", compare_debug_opt
, NULL
);
8259 /* %:compare-debug-auxbase-opt spec function. Expands to the auxbase
8260 options that are to be passed in the second compilation of
8261 compare-debug. It expects, as an argument, the basename of the
8262 current input file name, with the .gk suffix appended to it. */
8265 compare_debug_auxbase_opt_spec_function (int arg
,
8272 fatal_error ("too few arguments to %%:compare-debug-auxbase-opt");
8275 fatal_error ("too many arguments to %%:compare-debug-auxbase-opt");
8277 if (compare_debug
>= 0)
8280 len
= strlen (argv
[0]);
8281 if (len
< 3 || strcmp (argv
[0] + len
- 3, ".gk") != 0)
8282 fatal_error ("argument to %%:compare-debug-auxbase-opt "
8283 "does not end in .gk");
8285 if (debug_auxbase_opt
)
8286 return debug_auxbase_opt
;
8288 #define OPT "-auxbase "
8291 name
= (char*) xmalloc (sizeof (OPT
) + len
);
8292 memcpy (name
, OPT
, sizeof (OPT
) - 1);
8293 memcpy (name
+ sizeof (OPT
) - 1, argv
[0], len
);
8294 name
[sizeof (OPT
) - 1 + len
] = '\0';
8301 /* %:pass-through-libs spec function. Finds all -l options and input
8302 file names in the lib spec passed to it, and makes a list of them
8303 prepended with the plugin option to cause them to be passed through
8304 to the final link after all the new object files have been added. */
8307 pass_through_libs_spec_func (int argc
, const char **argv
)
8309 char *prepended
= xstrdup (" ");
8311 /* Shlemiel the painter's algorithm. Innately horrible, but at least
8312 we know that there will never be more than a handful of strings to
8313 concat, and it's only once per run, so it's not worth optimising. */
8314 for (n
= 0; n
< argc
; n
++)
8316 char *old
= prepended
;
8317 /* Anything that isn't an option is a full path to an output
8318 file; pass it through if it ends in '.a'. Among options,
8320 if (argv
[n
][0] == '-' && argv
[n
][1] == 'l')
8322 const char *lopt
= argv
[n
] + 2;
8323 /* Handle both joined and non-joined -l options. If for any
8324 reason there's a trailing -l with no joined or following
8325 arg just discard it. */
8326 if (!*lopt
&& ++n
>= argc
)
8330 prepended
= concat (prepended
, "-plugin-opt=-pass-through=-l",
8333 else if (!strcmp (".a", argv
[n
] + strlen (argv
[n
]) - 2))
8335 prepended
= concat (prepended
, "-plugin-opt=-pass-through=",
8336 argv
[n
], " ", NULL
);
8338 if (prepended
!= old
)