1 /* Compiler driver program that can handle many languages.
2 Copyright (C) 1987, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
3 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009,
5 Free Software Foundation, Inc.
7 This file is part of GCC.
9 GCC is free software; you can redistribute it and/or modify it under
10 the terms of the GNU General Public License as published by the Free
11 Software Foundation; either version 3, or (at your option) any later
14 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
15 WARRANTY; without even the implied warranty of MERCHANTABILITY or
16 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
19 You should have received a copy of the GNU General Public License
20 along with GCC; see the file COPYING3. If not see
21 <http://www.gnu.org/licenses/>. */
23 /* This program is the user interface to the C compiler and possibly to
24 other compilers. It is used because compilation is a complicated procedure
25 which involves running several programs and passing temporary files between
26 them, forwarding the users switches to those programs selectively,
27 and deleting the temporary files at the end.
29 CC recognizes how to compile each input file by suffixes in the file names.
30 Once it knows which kind of compilation to perform, the procedure for
31 compilation is specified by a string called a "spec". */
35 #include "coretypes.h"
36 #include "multilib.h" /* before tm.h */
43 #include "diagnostic.h"
48 #include "filenames.h"
50 /* By default there is no special suffix for target executables. */
51 /* FIXME: when autoconf is fixed, remove the host check - dj */
52 #if defined(TARGET_EXECUTABLE_SUFFIX) && defined(HOST_EXECUTABLE_SUFFIX)
53 #define HAVE_TARGET_EXECUTABLE_SUFFIX
56 /* By default there is no special suffix for host executables. */
57 #ifdef HOST_EXECUTABLE_SUFFIX
58 #define HAVE_HOST_EXECUTABLE_SUFFIX
60 #define HOST_EXECUTABLE_SUFFIX ""
63 /* By default, the suffix for target object files is ".o". */
64 #ifdef TARGET_OBJECT_SUFFIX
65 #define HAVE_TARGET_OBJECT_SUFFIX
67 #define TARGET_OBJECT_SUFFIX ".o"
70 static const char dir_separator_str
[] = { DIR_SEPARATOR
, 0 };
72 /* Most every one is fine with LIBRARY_PATH. For some, it conflicts. */
73 #ifndef LIBRARY_PATH_ENV
74 #define LIBRARY_PATH_ENV "LIBRARY_PATH"
77 /* If a stage of compilation returns an exit status >= 1,
78 compilation of that file ceases. */
80 #define MIN_FATAL_STATUS 1
82 /* Flag set by cppspec.c to 1. */
85 /* Flag set to nonzero if an @file argument has been supplied to gcc. */
86 static bool at_file_supplied
;
88 /* Definition of string containing the arguments given to configure. */
89 #include "configargs.h"
91 /* Flag saying to print the command line options understood by gcc and its
94 static int print_help_list
;
96 /* Flag saying to print the version of gcc and its sub-processes. */
98 static int print_version
;
100 /* Flag indicating whether we should ONLY print the command and
101 arguments (like verbose_flag) without executing the command.
102 Displayed arguments are quoted so that the generated command
103 line is suitable for execution. This is intended for use in
104 shell scripts to capture the driver-generated command line. */
105 static int verbose_only_flag
;
107 /* Flag indicating how to print command line options of sub-processes. */
109 static int print_subprocess_help
;
111 /* Whether we should report subprocess execution times to a file. */
113 FILE *report_times_to_file
= NULL
;
115 /* Nonzero means place this string before uses of /, so that include
116 and library files can be found in an alternate location. */
118 #ifdef TARGET_SYSTEM_ROOT
119 static const char *target_system_root
= TARGET_SYSTEM_ROOT
;
121 static const char *target_system_root
= 0;
124 /* Nonzero means pass the updated target_system_root to the compiler. */
126 static int target_system_root_changed
;
128 /* Nonzero means append this string to target_system_root. */
130 static const char *target_sysroot_suffix
= 0;
132 /* Nonzero means append this string to target_system_root for headers. */
134 static const char *target_sysroot_hdrs_suffix
= 0;
136 /* Nonzero means write "temp" files in source directory
137 and use the source file's name in them, and don't delete them. */
139 static enum save_temps
{
140 SAVE_TEMPS_NONE
, /* no -save-temps */
141 SAVE_TEMPS_CWD
, /* -save-temps in current directory */
142 SAVE_TEMPS_OBJ
/* -save-temps in object directory */
145 /* Output file to use to get the object directory for -save-temps=obj */
146 static char *save_temps_prefix
= 0;
147 static size_t save_temps_length
= 0;
149 /* The compiler version. */
151 static const char *compiler_version
;
153 /* The target version. */
155 static const char *const spec_version
= DEFAULT_TARGET_VERSION
;
157 /* The target machine. */
159 static const char *spec_machine
= DEFAULT_TARGET_MACHINE
;
161 /* Nonzero if cross-compiling.
162 When -b is used, the value comes from the `specs' file. */
164 #ifdef CROSS_DIRECTORY_STRUCTURE
165 static const char *cross_compile
= "1";
167 static const char *cross_compile
= "0";
170 /* Greatest exit code of sub-processes that has been encountered up to
172 static int greatest_status
= 1;
174 /* This is the obstack which we use to allocate many strings. */
176 static struct obstack obstack
;
178 /* This is the obstack to build an environment variable to pass to
179 collect2 that describes all of the relevant switches of what to
180 pass the compiler in building the list of pointers to constructors
183 static struct obstack collect_obstack
;
185 /* Forward declaration for prototypes. */
189 static void init_spec (void);
190 static void store_arg (const char *, int, int);
191 static void insert_wrapper (const char *);
192 static char *load_specs (const char *);
193 static void read_specs (const char *, int);
194 static void set_spec (const char *, const char *);
195 static struct compiler
*lookup_compiler (const char *, size_t, const char *);
196 static char *build_search_list (const struct path_prefix
*, const char *,
198 static void xputenv (const char *);
199 static void putenv_from_prefixes (const struct path_prefix
*, const char *,
201 static int access_check (const char *, int);
202 static char *find_a_file (const struct path_prefix
*, const char *, int, bool);
203 static void add_prefix (struct path_prefix
*, const char *, const char *,
205 static void add_sysrooted_prefix (struct path_prefix
*, const char *,
206 const char *, int, int, int);
207 static char *skip_whitespace (char *);
208 static void delete_if_ordinary (const char *);
209 static void delete_temp_files (void);
210 static void delete_failure_queue (void);
211 static void clear_failure_queue (void);
212 static int check_live_switch (int, int);
213 static const char *handle_braces (const char *);
214 static inline bool input_suffix_matches (const char *, const char *);
215 static inline bool switch_matches (const char *, const char *, int);
216 static inline void mark_matching_switches (const char *, const char *, int);
217 static inline void process_marked_switches (void);
218 static const char *process_brace_body (const char *, const char *, const char *, int, int);
219 static const struct spec_function
*lookup_spec_function (const char *);
220 static const char *eval_spec_function (const char *, const char *);
221 static const char *handle_spec_function (const char *);
222 static char *save_string (const char *, int);
223 static void set_collect_gcc_options (void);
224 static int do_spec_1 (const char *, int, const char *);
225 static int do_spec_2 (const char *);
226 static void do_option_spec (const char *, const char *);
227 static void do_self_spec (const char *);
228 static const char *find_file (const char *);
229 static int is_directory (const char *, bool);
230 static const char *validate_switches (const char *);
231 static void validate_all_switches (void);
232 static inline void validate_switches_from_spec (const char *);
233 static void give_switch (int, int);
234 static int used_arg (const char *, int);
235 static int default_arg (const char *, int);
236 static void set_multilib_dir (void);
237 static void print_multilib_info (void);
238 static void perror_with_name (const char *);
239 static void display_help (void);
240 static void add_preprocessor_option (const char *, int);
241 static void add_assembler_option (const char *, int);
242 static void add_linker_option (const char *, int);
243 static void process_command (unsigned int, struct cl_decoded_option
*);
244 static int execute (void);
245 static void alloc_args (void);
246 static void clear_args (void);
247 static void fatal_signal (int);
248 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
249 static void init_gcc_specs (struct obstack
*, const char *, const char *,
252 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
253 static const char *convert_filename (const char *, int, int);
256 static const char *getenv_spec_function (int, const char **);
257 static const char *if_exists_spec_function (int, const char **);
258 static const char *if_exists_else_spec_function (int, const char **);
259 static const char *replace_outfile_spec_function (int, const char **);
260 static const char *remove_outfile_spec_function (int, const char **);
261 static const char *version_compare_spec_function (int, const char **);
262 static const char *include_spec_function (int, const char **);
263 static const char *find_file_spec_function (int, const char **);
264 static const char *find_plugindir_spec_function (int, const char **);
265 static const char *print_asm_header_spec_function (int, const char **);
266 static const char *compare_debug_dump_opt_spec_function (int, const char **);
267 static const char *compare_debug_self_opt_spec_function (int, const char **);
268 static const char *compare_debug_auxbase_opt_spec_function (int, const char **);
269 static const char *pass_through_libs_spec_func (int, const char **);
271 /* The Specs Language
273 Specs are strings containing lines, each of which (if not blank)
274 is made up of a program name, and arguments separated by spaces.
275 The program name must be exact and start from root, since no path
276 is searched and it is unreliable to depend on the current working directory.
277 Redirection of input or output is not supported; the subprograms must
278 accept filenames saying what files to read and write.
280 In addition, the specs can contain %-sequences to substitute variable text
281 or for conditional text. Here is a table of all defined %-sequences.
282 Note that spaces are not generated automatically around the results of
283 expanding these sequences; therefore, you can concatenate them together
284 or with constant text in a single argument.
286 %% substitute one % into the program name or argument.
287 %i substitute the name of the input file being processed.
288 %b substitute the basename of the input file being processed.
289 This is the substring up to (and not including) the last period
290 and not including the directory unless -save-temps was specified
291 to put temporaries in a different location.
292 %B same as %b, but include the file suffix (text after the last period).
294 substitute a file name that has suffix SUFFIX and is chosen
295 once per compilation, and mark the argument a la %d. To reduce
296 exposure to denial-of-service attacks, the file name is now
297 chosen in a way that is hard to predict even when previously
298 chosen file names are known. For example, `%g.s ... %g.o ... %g.s'
299 might turn into `ccUVUUAU.s ccXYAXZ12.o ccUVUUAU.s'. SUFFIX matches
300 the regexp "[.0-9A-Za-z]*%O"; "%O" is treated exactly as if it
301 had been pre-processed. Previously, %g was simply substituted
302 with a file name chosen once per compilation, without regard
303 to any appended suffix (which was therefore treated just like
304 ordinary text), making such attacks more likely to succeed.
306 like %g, but if -pipe is in effect, expands simply to "-".
308 like %g, but if -pipe is in effect, expands to nothing. (We have both
309 %| and %m to accommodate differences between system assemblers; see
310 the AS_NEEDS_DASH_FOR_PIPED_INPUT target macro.)
312 like %g, but generates a new temporary file name even if %uSUFFIX
315 substitutes the last file name generated with %uSUFFIX, generating a
316 new one if there is no such last file name. In the absence of any
317 %uSUFFIX, this is just like %gSUFFIX, except they don't share
318 the same suffix "space", so `%g.s ... %U.s ... %g.s ... %U.s'
319 would involve the generation of two distinct file names, one
320 for each `%g.s' and another for each `%U.s'. Previously, %U was
321 simply substituted with a file name chosen for the previous %u,
322 without regard to any appended suffix.
324 substitutes the name of the HOST_BIT_BUCKET, if any, and if it is
325 writable, and if save-temps is off; otherwise, substitute the name
326 of a temporary file, just like %u. This temporary file is not
327 meant for communication between processes, but rather as a junk
330 substitutes .SUFFIX for the suffixes of a matched switch's args when
331 it is subsequently output with %*. SUFFIX is terminated by the next
333 %d marks the argument containing or following the %d as a
334 temporary file name, so that that file will be deleted if GCC exits
335 successfully. Unlike %g, this contributes no text to the argument.
336 %w marks the argument containing or following the %w as the
337 "output file" of this compilation. This puts the argument
338 into the sequence of arguments that %o will substitute later.
339 %V indicates that this compilation produces no "output file".
341 like %{...} but mark last argument supplied within
342 as a file to be deleted on failure.
343 %o substitutes the names of all the output files, with spaces
344 automatically placed around them. You should write spaces
345 around the %o as well or the results are undefined.
346 %o is for use in the specs for running the linker.
347 Input files whose names have no recognized suffix are not compiled
348 at all, but they are included among the output files, so they will
350 %O substitutes the suffix for object files. Note that this is
351 handled specially when it immediately follows %g, %u, or %U
352 (with or without a suffix argument) because of the need for
353 those to form complete file names. The handling is such that
354 %O is treated exactly as if it had already been substituted,
355 except that %g, %u, and %U do not currently support additional
356 SUFFIX characters following %O as they would following, for
358 %I Substitute any of -iprefix (made from GCC_EXEC_PREFIX), -isysroot
359 (made from TARGET_SYSTEM_ROOT), -isystem (made from COMPILER_PATH
360 and -B options) and -imultilib as necessary.
361 %s current argument is the name of a library or startup file of some sort.
362 Search for that file in a standard list of directories
363 and substitute the full name found.
364 %eSTR Print STR as an error message. STR is terminated by a newline.
365 Use this when inconsistent options are detected.
366 %nSTR Print STR as a notice. STR is terminated by a newline.
367 %x{OPTION} Accumulate an option for %X.
368 %X Output the accumulated linker options specified by compilations.
369 %Y Output the accumulated assembler options specified by compilations.
370 %Z Output the accumulated preprocessor options specified by compilations.
371 %a process ASM_SPEC as a spec.
372 This allows config.h to specify part of the spec for running as.
373 %A process ASM_FINAL_SPEC as a spec. A capital A is actually
374 used here. This can be used to run a post-processor after the
375 assembler has done its job.
376 %D Dump out a -L option for each directory in startfile_prefixes.
377 If multilib_dir is set, extra entries are generated with it affixed.
378 %l process LINK_SPEC as a spec.
379 %L process LIB_SPEC as a spec.
380 %G process LIBGCC_SPEC as a spec.
381 %R Output the concatenation of target_system_root and
382 target_sysroot_suffix.
383 %S process STARTFILE_SPEC as a spec. A capital S is actually used here.
384 %E process ENDFILE_SPEC as a spec. A capital E is actually used here.
385 %C process CPP_SPEC as a spec.
386 %1 process CC1_SPEC as a spec.
387 %2 process CC1PLUS_SPEC as a spec.
388 %* substitute the variable part of a matched option. (See below.)
389 Note that each comma in the substituted string is replaced by
391 %<S remove all occurrences of -S from the command line.
392 Note - this command is position dependent. % commands in the
393 spec string before this one will see -S, % commands in the
394 spec string after this one will not.
395 %>S Similar to "%<S", but keep it in the GCC command line.
396 %<S* remove all occurrences of all switches beginning with -S from the
399 Call the named function FUNCTION, passing it ARGS. ARGS is
400 first processed as a nested spec string, then split into an
401 argument vector in the usual fashion. The function returns
402 a string which is processed as if it had appeared literally
403 as part of the current spec.
404 %{S} substitutes the -S switch, if that switch was given to GCC.
405 If that switch was not specified, this substitutes nothing.
406 Here S is a metasyntactic variable.
407 %{S*} substitutes all the switches specified to GCC whose names start
408 with -S. This is used for -o, -I, etc; switches that take
409 arguments. GCC considers `-o foo' as being one switch whose
410 name starts with `o'. %{o*} would substitute this text,
411 including the space; thus, two arguments would be generated.
412 %{S*&T*} likewise, but preserve order of S and T options (the order
413 of S and T in the spec is not significant). Can be any number
414 of ampersand-separated variables; for each the wild card is
415 optional. Useful for CPP as %{D*&U*&A*}.
417 %{S:X} substitutes X, if the -S switch was given to GCC.
418 %{!S:X} substitutes X, if the -S switch was NOT given to GCC.
419 %{S*:X} substitutes X if one or more switches whose names start
420 with -S was given to GCC. Normally X is substituted only
421 once, no matter how many such switches appeared. However,
422 if %* appears somewhere in X, then X will be substituted
423 once for each matching switch, with the %* replaced by the
424 part of that switch that matched the '*'.
425 %{.S:X} substitutes X, if processing a file with suffix S.
426 %{!.S:X} substitutes X, if NOT processing a file with suffix S.
427 %{,S:X} substitutes X, if processing a file which will use spec S.
428 %{!,S:X} substitutes X, if NOT processing a file which will use spec S.
430 %{S|T:X} substitutes X if either -S or -T was given to GCC. This may be
431 combined with '!', '.', ',', and '*' as above binding stronger
433 If %* appears in X, all of the alternatives must be starred, and
434 only the first matching alternative is substituted.
435 %{S:X; if S was given to GCC, substitutes X;
436 T:Y; else if T was given to GCC, substitutes Y;
437 :D} else substitutes D. There can be as many clauses as you need.
438 This may be combined with '.', '!', ',', '|', and '*' as above.
440 %(Spec) processes a specification defined in a specs file as *Spec:
442 The conditional text X in a %{S:X} or similar construct may contain
443 other nested % constructs or spaces, or even newlines. They are
444 processed as usual, as described above. Trailing white space in X is
445 ignored. White space may also appear anywhere on the left side of the
446 colon in these constructs, except between . or * and the corresponding
449 The -O, -f, -m, and -W switches are handled specifically in these
450 constructs. If another value of -O or the negated form of a -f, -m, or
451 -W switch is found later in the command line, the earlier switch
452 value is ignored, except with {S*} where S is just one letter; this
453 passes all matching options.
455 The character | at the beginning of the predicate text is used to indicate
456 that a command should be piped to the following command, but only if -pipe
459 Note that it is built into GCC which switches take arguments and which
460 do not. You might think it would be useful to generalize this to
461 allow each compiler's spec to say which switches take arguments. But
462 this cannot be done in a consistent fashion. GCC cannot even decide
463 which input files have been specified without knowing which switches
464 take arguments, and it must know which input files to compile in order
465 to tell which compilers to run.
467 GCC also knows implicitly that arguments starting in `-l' are to be
468 treated as compiler output files, and passed to the linker in their
469 proper position among the other output files. */
471 /* Define the macros used for specs %a, %l, %L, %S, %C, %1. */
473 /* config.h can define ASM_SPEC to provide extra args to the assembler
474 or extra switch-translations. */
479 /* config.h can define ASM_FINAL_SPEC to run a post processor after
480 the assembler has run. */
481 #ifndef ASM_FINAL_SPEC
482 #define ASM_FINAL_SPEC ""
485 /* config.h can define CPP_SPEC to provide extra args to the C preprocessor
486 or extra switch-translations. */
491 /* config.h can define CC1_SPEC to provide extra args to cc1 and cc1plus
492 or extra switch-translations. */
497 /* config.h can define CC1PLUS_SPEC to provide extra args to cc1plus
498 or extra switch-translations. */
500 #define CC1PLUS_SPEC ""
503 /* config.h can define LINK_SPEC to provide extra args to the linker
504 or extra switch-translations. */
509 /* config.h can define LIB_SPEC to override the default libraries. */
511 #define LIB_SPEC "%{!shared:%{g*:-lg} %{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p}}"
516 /* XXX: valid only for GNU ld */
517 /* XXX: should exactly match hooks provided by libmudflap.a */
518 #define MFWRAP_SPEC " %{static: %{fmudflap|fmudflapth: \
519 --wrap=malloc --wrap=free --wrap=calloc --wrap=realloc\
520 --wrap=mmap --wrap=mmap64 --wrap=munmap --wrap=alloca\
521 } %{fmudflapth: --wrap=pthread_create\
522 }} %{fmudflap|fmudflapth: --wrap=main}"
525 #define MFLIB_SPEC "%{fmudflap|fmudflapth: -export-dynamic}"
528 /* When using -fsplit-stack we need to wrap pthread_create, in order
529 to initialize the stack guard. We always use wrapping, rather than
530 shared library ordering, and we keep the wrapper function in
531 libgcc. This is not yet a real spec, though it could become one;
532 it is currently just stuffed into LINK_SPEC. FIXME: This wrapping
533 only works with GNU ld and gold. FIXME: This is incompatible with
534 -fmudflap when linking statically, which wants to do its own
536 #define STACK_SPLIT_SPEC " %{fsplit-stack: --wrap=pthread_create}"
538 /* config.h can define LIBGCC_SPEC to override how and when libgcc.a is
541 #if defined(REAL_LIBGCC_SPEC)
542 #define LIBGCC_SPEC REAL_LIBGCC_SPEC
543 #elif defined(LINK_LIBGCC_SPECIAL_1)
544 /* Have gcc do the search for libgcc.a. */
545 #define LIBGCC_SPEC "libgcc.a%s"
547 #define LIBGCC_SPEC "-lgcc"
551 /* config.h can define STARTFILE_SPEC to override the default crt0 files. */
552 #ifndef STARTFILE_SPEC
553 #define STARTFILE_SPEC \
554 "%{!shared:%{pg:gcrt0%O%s}%{!pg:%{p:mcrt0%O%s}%{!p:crt0%O%s}}}"
557 /* config.h can define ENDFILE_SPEC to override the default crtn files. */
559 #define ENDFILE_SPEC ""
563 #define LINKER_NAME "collect2"
566 #ifdef HAVE_AS_DEBUG_PREFIX_MAP
567 #define ASM_MAP " %{fdebug-prefix-map=*:--debug-prefix-map %*}"
572 /* Define ASM_DEBUG_SPEC to be a spec suitable for translating '-g'
574 #ifndef ASM_DEBUG_SPEC
575 # if defined(DBX_DEBUGGING_INFO) && defined(DWARF2_DEBUGGING_INFO) \
576 && defined(HAVE_AS_GDWARF2_DEBUG_FLAG) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
577 # define ASM_DEBUG_SPEC \
578 (PREFERRED_DEBUGGING_TYPE == DBX_DEBUG \
579 ? "%{!g0:%{gdwarf-2*:--gdwarf2}%{!gdwarf-2*:%{g*:--gstabs}}}" ASM_MAP \
580 : "%{!g0:%{gstabs*:--gstabs}%{!gstabs*:%{g*:--gdwarf2}}}" ASM_MAP)
582 # if defined(DBX_DEBUGGING_INFO) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
583 # define ASM_DEBUG_SPEC "%{g*:%{!g0:--gstabs}}" ASM_MAP
585 # if defined(DWARF2_DEBUGGING_INFO) && defined(HAVE_AS_GDWARF2_DEBUG_FLAG)
586 # define ASM_DEBUG_SPEC "%{g*:%{!g0:--gdwarf2}}" ASM_MAP
590 #ifndef ASM_DEBUG_SPEC
591 # define ASM_DEBUG_SPEC ""
594 /* Here is the spec for running the linker, after compiling all files. */
596 /* This is overridable by the target in case they need to specify the
597 -lgcc and -lc order specially, yet not require them to override all
598 of LINK_COMMAND_SPEC. */
599 #ifndef LINK_GCC_C_SEQUENCE_SPEC
600 #define LINK_GCC_C_SEQUENCE_SPEC "%G %L %G"
603 #ifndef LINK_SSP_SPEC
604 #ifdef TARGET_LIBC_PROVIDES_SSP
605 #define LINK_SSP_SPEC "%{fstack-protector:}"
607 #define LINK_SSP_SPEC "%{fstack-protector|fstack-protector-all:-lssp_nonshared -lssp}"
611 #ifndef LINK_PIE_SPEC
613 #define LINK_PIE_SPEC "%{pie:-pie} "
615 #define LINK_PIE_SPEC "%{pie:} "
619 #ifndef LINK_BUILDID_SPEC
620 # if defined(HAVE_LD_BUILDID) && defined(ENABLE_LD_BUILDID)
621 # define LINK_BUILDID_SPEC "%{!r:--build-id} "
625 /* Conditional to test whether the LTO plugin is used or not.
626 FIXME: For slim LTO we will need to enable plugin unconditionally. This
627 still cause problems with PLUGIN_LD != LD and when plugin is built but
628 not useable. For GCC 4.6 we don't support slim LTO and thus we can enable
629 plugin only when LTO is enabled. We still honor explicit
630 -fuse-linker-plugin if the linker used understands -plugin. */
632 /* The linker has some plugin support. */
633 #if HAVE_LTO_PLUGIN > 0
634 /* The linker used has full plugin support, use LTO plugin by default. */
635 #if HAVE_LTO_PLUGIN == 2
636 #define PLUGIN_COND "!fno-use-linker-plugin:%{flto|flto=*|fuse-linker-plugin"
637 #define PLUGIN_COND_CLOSE "}"
639 /* The linker used has limited plugin support, use LTO plugin with explicit
640 -fuse-linker-plugin. */
641 #define PLUGIN_COND "fuse-linker-plugin"
642 #define PLUGIN_COND_CLOSE ""
644 #define LINK_PLUGIN_SPEC \
646 -plugin %(linker_plugin_file) \
647 -plugin-opt=%(lto_wrapper) \
648 -plugin-opt=-fresolution=%u.res \
649 %{!nostdlib:%{!nodefaultlibs:%:pass-through-libs(%(link_gcc_c_sequence))}} \
652 /* The linker used doesn't support -plugin, reject -fuse-linker-plugin. */
653 #define LINK_PLUGIN_SPEC "%{fuse-linker-plugin:\
654 %e-fuse-linker-plugin is not supported in this configuration}"
658 /* -u* was put back because both BSD and SysV seem to support it. */
659 /* %{static:} simply prevents an error message if the target machine
660 doesn't handle -static. */
661 /* We want %{T*} after %{L*} and %D so that it can be used to specify linker
662 scripts which exist in user specified directories, or in standard
664 /* We pass any -flto flags on to the linker, which is expected
665 to understand them. In practice, this means it had better be collect2. */
666 /* %{e*} includes -export-dynamic; see comment in common.opt. */
667 #ifndef LINK_COMMAND_SPEC
668 #define LINK_COMMAND_SPEC "\
669 %{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:\
672 "%{flto|flto=*:%<fcompare-debug*} \
673 %{flto} %{flto=*} %l " LINK_PIE_SPEC \
674 "%X %{o*} %{e*} %{N} %{n} %{r}\
675 %{s} %{t} %{u*} %{z} %{Z} %{!nostdlib:%{!nostartfiles:%S}}\
676 %{static:} %{L*} %(mfwrap) %(link_libgcc) %o\
677 %{fopenmp|ftree-parallelize-loops=*:%:include(libgomp.spec)%(link_gomp)}\
678 %(mflib) " STACK_SPLIT_SPEC "\
679 %{fprofile-arcs|fprofile-generate*|coverage:-lgcov}\
680 %{!nostdlib:%{!nodefaultlibs:%(link_ssp) %(link_gcc_c_sequence)}}\
681 %{!nostdlib:%{!nostartfiles:%E}} %{T*} }}}}}}"
684 #ifndef LINK_LIBGCC_SPEC
685 /* Generate -L options for startfile prefix list. */
686 # define LINK_LIBGCC_SPEC "%D"
689 #ifndef STARTFILE_PREFIX_SPEC
690 # define STARTFILE_PREFIX_SPEC ""
694 # define SYSROOT_SPEC "--sysroot=%R"
697 #ifndef SYSROOT_SUFFIX_SPEC
698 # define SYSROOT_SUFFIX_SPEC ""
701 #ifndef SYSROOT_HEADERS_SUFFIX_SPEC
702 # define SYSROOT_HEADERS_SUFFIX_SPEC ""
705 static const char *asm_debug
;
706 static const char *cpp_spec
= CPP_SPEC
;
707 static const char *cc1_spec
= CC1_SPEC
;
708 static const char *cc1plus_spec
= CC1PLUS_SPEC
;
709 static const char *link_gcc_c_sequence_spec
= LINK_GCC_C_SEQUENCE_SPEC
;
710 static const char *link_ssp_spec
= LINK_SSP_SPEC
;
711 static const char *asm_spec
= ASM_SPEC
;
712 static const char *asm_final_spec
= ASM_FINAL_SPEC
;
713 static const char *link_spec
= LINK_SPEC
;
714 static const char *lib_spec
= LIB_SPEC
;
715 static const char *mfwrap_spec
= MFWRAP_SPEC
;
716 static const char *mflib_spec
= MFLIB_SPEC
;
717 static const char *link_gomp_spec
= "";
718 static const char *libgcc_spec
= LIBGCC_SPEC
;
719 static const char *endfile_spec
= ENDFILE_SPEC
;
720 static const char *startfile_spec
= STARTFILE_SPEC
;
721 static const char *linker_name_spec
= LINKER_NAME
;
722 static const char *linker_plugin_file_spec
= "";
723 static const char *lto_wrapper_spec
= "";
724 static const char *lto_gcc_spec
= "";
725 static const char *link_command_spec
= LINK_COMMAND_SPEC
;
726 static const char *link_libgcc_spec
= LINK_LIBGCC_SPEC
;
727 static const char *startfile_prefix_spec
= STARTFILE_PREFIX_SPEC
;
728 static const char *sysroot_spec
= SYSROOT_SPEC
;
729 static const char *sysroot_suffix_spec
= SYSROOT_SUFFIX_SPEC
;
730 static const char *sysroot_hdrs_suffix_spec
= SYSROOT_HEADERS_SUFFIX_SPEC
;
731 static const char *self_spec
= "";
733 /* Standard options to cpp, cc1, and as, to reduce duplication in specs.
734 There should be no need to override these in target dependent files,
735 but we need to copy them to the specs file so that newer versions
736 of the GCC driver can correctly drive older tool chains with the
737 appropriate -B options. */
739 /* When cpplib handles traditional preprocessing, get rid of this, and
740 call cc1 (or cc1obj in objc/lang-specs.h) from the main specs so
741 that we default the front end language better. */
742 static const char *trad_capable_cpp
=
743 "cc1 -E %{traditional|traditional-cpp:-traditional-cpp}";
745 /* We don't wrap .d files in %W{} since a missing .d file, and
746 therefore no dependency entry, confuses make into thinking a .o
747 file that happens to exist is up-to-date. */
748 static const char *cpp_unique_options
=
749 "%{!Q:-quiet} %{nostdinc*} %{C} %{CC} %{v} %{I*&F*} %{P} %I\
750 %{MD:-MD %{!o:%b.d}%{o*:%.d%*}}\
751 %{MMD:-MMD %{!o:%b.d}%{o*:%.d%*}}\
752 %{M} %{MM} %{MF*} %{MG} %{MP} %{MQ*} %{MT*}\
753 %{!E:%{!M:%{!MM:%{!MT:%{!MQ:%{MD|MMD:%{o*:-MQ %*}}}}}}}\
754 %{remap} %{g3|ggdb3|gstabs3|gcoff3|gxcoff3|gvms3:-dD}\
755 %{!iplugindir*:%{fplugin*:%:find-plugindir()}}\
756 %{H} %C %{D*&U*&A*} %{i*} %Z %i\
757 %{fmudflap:-D_MUDFLAP -include mf-runtime.h}\
758 %{fmudflapth:-D_MUDFLAP -D_MUDFLAPTH -include mf-runtime.h}\
761 /* This contains cpp options which are common with cc1_options and are passed
762 only when preprocessing only to avoid duplication. We pass the cc1 spec
763 options to the preprocessor so that it the cc1 spec may manipulate
764 options used to set target flags. Those special target flags settings may
765 in turn cause preprocessor symbols to be defined specially. */
766 static const char *cpp_options
=
767 "%(cpp_unique_options) %1 %{m*} %{std*&ansi&trigraphs} %{W*&pedantic*} %{w}\
768 %{f*} %{g*:%{!g0:%{g*} %{!fno-working-directory:-fworking-directory}}} %{O*}\
769 %{undef} %{save-temps*:-fpch-preprocess}";
771 /* This contains cpp options which are not passed when the preprocessor
772 output will be used by another program. */
773 static const char *cpp_debug_options
= "%{d*}";
775 /* NB: This is shared amongst all front-ends, except for Ada. */
776 static const char *cc1_options
=
777 "%{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\
778 %{!iplugindir*:%{fplugin*:%:find-plugindir()}}\
779 %1 %{!Q:-quiet} %{!dumpbase:-dumpbase %B} %{d*} %{m*} %{aux-info*}\
780 %{fcompare-debug-second:%:compare-debug-auxbase-opt(%b)} \
781 %{!fcompare-debug-second:%{c|S:%{o*:-auxbase-strip %*}%{!o*:-auxbase %b}}}%{!c:%{!S:-auxbase %b}} \
782 %{g*} %{O*} %{W*&pedantic*} %{w} %{std*&ansi&trigraphs}\
783 %{v:-version} %{pg:-p} %{p} %{f*} %{undef}\
784 %{Qn:-fno-ident} %{Qy:} %{-help:--help}\
785 %{-target-help:--target-help}\
786 %{-version:--version}\
787 %{-help=*:--help=%*}\
788 %{!fsyntax-only:%{S:%W{o*}%{!o*:-o %b.s}}}\
789 %{fsyntax-only:-o %j} %{-param*}\
790 %{fmudflap|fmudflapth:-fno-builtin -fno-merge-constants}\
791 %{coverage:-fprofile-arcs -ftest-coverage}";
793 static const char *asm_options
=
794 "%{-target-help:%:print-asm-header()} "
796 /* If GNU AS is used, then convert -w (no warnings), -I, and -v
797 to the assembler equivalents. */
798 "%{v} %{w:-W} %{I*} "
800 "%a %Y %{c:%W{o*}%{!o*:-o %w%b%O}}%{!c:-o %d%w%u%O}";
802 static const char *invoke_as
=
803 #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT
805 %{fcompare-debug=*|fdump-final-insns=*:%:compare-debug-dump-opt()}\
806 %{!S:-o %|.s |\n as %(asm_options) %|.s %A }\
810 %{fcompare-debug=*|fdump-final-insns=*:%:compare-debug-dump-opt()}\
811 %{!S:-o %|.s |\n as %(asm_options) %m.s %A }\
815 /* Some compilers have limits on line lengths, and the multilib_select
816 and/or multilib_matches strings can be very long, so we build them at
818 static struct obstack multilib_obstack
;
819 static const char *multilib_select
;
820 static const char *multilib_matches
;
821 static const char *multilib_defaults
;
822 static const char *multilib_exclusions
;
824 /* Check whether a particular argument is a default argument. */
826 #ifndef MULTILIB_DEFAULTS
827 #define MULTILIB_DEFAULTS { "" }
830 static const char *const multilib_defaults_raw
[] = MULTILIB_DEFAULTS
;
832 #ifndef DRIVER_SELF_SPECS
833 #define DRIVER_SELF_SPECS ""
836 /* Adding -fopenmp should imply pthreads. This is particularly important
837 for targets that use different start files and suchlike. */
838 #ifndef GOMP_SELF_SPECS
839 #define GOMP_SELF_SPECS "%{fopenmp|ftree-parallelize-loops=*: -pthread}"
842 static const char *const driver_self_specs
[] = {
843 "%{fdump-final-insns:-fdump-final-insns=.} %<fdump-final-insns",
844 DRIVER_SELF_SPECS
, CONFIGURE_SPECS
, GOMP_SELF_SPECS
847 #ifndef OPTION_DEFAULT_SPECS
848 #define OPTION_DEFAULT_SPECS { "", "" }
857 static const struct default_spec
858 option_default_specs
[] = { OPTION_DEFAULT_SPECS
};
862 struct user_specs
*next
;
863 const char *filename
;
866 static struct user_specs
*user_specs_head
, *user_specs_tail
;
869 /* Record the mapping from file suffixes for compilation specs. */
873 const char *suffix
; /* Use this compiler for input files
874 whose names end in this suffix. */
876 const char *spec
; /* To use this compiler, run this spec. */
878 const char *cpp_spec
; /* If non-NULL, substitute this spec
879 for `%C', rather than the usual
881 const int combinable
; /* If nonzero, compiler can deal with
882 multiple source files at once (IMA). */
883 const int needs_preprocessing
; /* If nonzero, source files need to
884 be run through a preprocessor. */
887 /* Pointer to a vector of `struct compiler' that gives the spec for
888 compiling a file, based on its suffix.
889 A file that does not end in any of these suffixes will be passed
890 unchanged to the loader and nothing else will be done to it.
892 An entry containing two 0s is used to terminate the vector.
894 If multiple entries match a file, the last matching one is used. */
896 static struct compiler
*compilers
;
898 /* Number of entries in `compilers', not counting the null terminator. */
900 static int n_compilers
;
902 /* The default list of file name suffixes and their compilation specs. */
904 static const struct compiler default_compilers
[] =
906 /* Add lists of suffixes of known languages here. If those languages
907 were not present when we built the driver, we will hit these copies
908 and be given a more meaningful error than "file not used since
909 linking is not done". */
910 {".m", "#Objective-C", 0, 0, 0}, {".mi", "#Objective-C", 0, 0, 0},
911 {".mm", "#Objective-C++", 0, 0, 0}, {".M", "#Objective-C++", 0, 0, 0},
912 {".mii", "#Objective-C++", 0, 0, 0},
913 {".cc", "#C++", 0, 0, 0}, {".cxx", "#C++", 0, 0, 0},
914 {".cpp", "#C++", 0, 0, 0}, {".cp", "#C++", 0, 0, 0},
915 {".c++", "#C++", 0, 0, 0}, {".C", "#C++", 0, 0, 0},
916 {".CPP", "#C++", 0, 0, 0}, {".ii", "#C++", 0, 0, 0},
917 {".ads", "#Ada", 0, 0, 0}, {".adb", "#Ada", 0, 0, 0},
918 {".f", "#Fortran", 0, 0, 0}, {".F", "#Fortran", 0, 0, 0},
919 {".for", "#Fortran", 0, 0, 0}, {".FOR", "#Fortran", 0, 0, 0},
920 {".ftn", "#Fortran", 0, 0, 0}, {".FTN", "#Fortran", 0, 0, 0},
921 {".fpp", "#Fortran", 0, 0, 0}, {".FPP", "#Fortran", 0, 0, 0},
922 {".f90", "#Fortran", 0, 0, 0}, {".F90", "#Fortran", 0, 0, 0},
923 {".f95", "#Fortran", 0, 0, 0}, {".F95", "#Fortran", 0, 0, 0},
924 {".f03", "#Fortran", 0, 0, 0}, {".F03", "#Fortran", 0, 0, 0},
925 {".f08", "#Fortran", 0, 0, 0}, {".F08", "#Fortran", 0, 0, 0},
926 {".r", "#Ratfor", 0, 0, 0},
927 {".p", "#Pascal", 0, 0, 0}, {".pas", "#Pascal", 0, 0, 0},
928 {".java", "#Java", 0, 0, 0}, {".class", "#Java", 0, 0, 0},
929 {".zip", "#Java", 0, 0, 0}, {".jar", "#Java", 0, 0, 0},
930 {".go", "#Go", 0, 1, 0},
931 /* Next come the entries for C. */
932 {".c", "@c", 0, 0, 1},
934 /* cc1 has an integrated ISO C preprocessor. We should invoke the
935 external preprocessor if -save-temps is given. */
936 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\
939 %eGNU C no longer supports -traditional without -E}\
940 %{save-temps*|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
941 %(cpp_options) -o %{save-temps*:%b.i} %{!save-temps*:%g.i} \n\
942 cc1 -fpreprocessed %{save-temps*:%b.i} %{!save-temps*:%g.i} \
944 %{!save-temps*:%{!traditional-cpp:%{!no-integrated-cpp:\
945 cc1 %(cpp_unique_options) %(cc1_options)}}}\
946 %{!fsyntax-only:%(invoke_as)}}}}", 0, 0, 1},
948 "%{!E:%e-E or -x required when input is from standard input}\
949 %(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)", 0, 0, 0},
950 {".h", "@c-header", 0, 0, 0},
952 /* cc1 has an integrated ISO C preprocessor. We should invoke the
953 external preprocessor if -save-temps is given. */
954 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\
956 %{save-temps*|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
957 %(cpp_options) -o %{save-temps*:%b.i} %{!save-temps*:%g.i} \n\
958 cc1 -fpreprocessed %{save-temps*:%b.i} %{!save-temps*:%g.i} \
960 %{!fdump-ada-spec*:-o %g.s %{!o*:--output-pch=%i.gch}\
961 %W{o*:--output-pch=%*}}%V}\
962 %{!save-temps*:%{!traditional-cpp:%{!no-integrated-cpp:\
963 cc1 %(cpp_unique_options) %(cc1_options)\
964 %{!fdump-ada-spec*:-o %g.s %{!o*:--output-pch=%i.gch}\
965 %W{o*:--output-pch=%*}}%V}}}}}}", 0, 0, 0},
966 {".i", "@cpp-output", 0, 0, 0},
968 "%{!M:%{!MM:%{!E:cc1 -fpreprocessed %i %(cc1_options) %{!fsyntax-only:%(invoke_as)}}}}", 0, 0, 0},
969 {".s", "@assembler", 0, 0, 0},
971 "%{!M:%{!MM:%{!E:%{!S:as %(asm_debug) %(asm_options) %i %A }}}}", 0, 0, 0},
972 {".sx", "@assembler-with-cpp", 0, 0, 0},
973 {".S", "@assembler-with-cpp", 0, 0, 0},
974 {"@assembler-with-cpp",
975 #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT
976 "%(trad_capable_cpp) -lang-asm %(cpp_options) -fno-directives-only\
977 %{E|M|MM:%(cpp_debug_options)}\
978 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\
979 as %(asm_debug) %(asm_options) %|.s %A }}}}"
981 "%(trad_capable_cpp) -lang-asm %(cpp_options) -fno-directives-only\
982 %{E|M|MM:%(cpp_debug_options)}\
983 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\
984 as %(asm_debug) %(asm_options) %m.s %A }}}}"
989 /* Mark end of table. */
993 /* Number of elements in default_compilers, not counting the terminator. */
995 static const int n_default_compilers
= ARRAY_SIZE (default_compilers
) - 1;
997 typedef char *char_p
; /* For DEF_VEC_P. */
999 DEF_VEC_ALLOC_P(char_p
,heap
);
1001 /* A vector of options to give to the linker.
1002 These options are accumulated by %x,
1003 and substituted into the linker command with %X. */
1004 static VEC(char_p
,heap
) *linker_options
;
1006 /* A vector of options to give to the assembler.
1007 These options are accumulated by -Wa,
1008 and substituted into the assembler command with %Y. */
1009 static VEC(char_p
,heap
) *assembler_options
;
1011 /* A vector of options to give to the preprocessor.
1012 These options are accumulated by -Wp,
1013 and substituted into the preprocessor command with %Z. */
1014 static VEC(char_p
,heap
) *preprocessor_options
;
1017 skip_whitespace (char *p
)
1021 /* A fully-blank line is a delimiter in the SPEC file and shouldn't
1022 be considered whitespace. */
1023 if (p
[0] == '\n' && p
[1] == '\n' && p
[2] == '\n')
1025 else if (*p
== '\n' || *p
== ' ' || *p
== '\t')
1039 /* Structures to keep track of prefixes to try when looking for files. */
1043 const char *prefix
; /* String to prepend to the path. */
1044 struct prefix_list
*next
; /* Next in linked list. */
1045 int require_machine_suffix
; /* Don't use without machine_suffix. */
1046 /* 2 means try both machine_suffix and just_machine_suffix. */
1047 int priority
; /* Sort key - priority within list. */
1048 int os_multilib
; /* 1 if OS multilib scheme should be used,
1049 0 for GCC multilib scheme. */
1054 struct prefix_list
*plist
; /* List of prefixes to try */
1055 int max_len
; /* Max length of a prefix in PLIST */
1056 const char *name
; /* Name of this list (used in config stuff) */
1059 /* List of prefixes to try when looking for executables. */
1061 static struct path_prefix exec_prefixes
= { 0, 0, "exec" };
1063 /* List of prefixes to try when looking for startup (crt0) files. */
1065 static struct path_prefix startfile_prefixes
= { 0, 0, "startfile" };
1067 /* List of prefixes to try when looking for include files. */
1069 static struct path_prefix include_prefixes
= { 0, 0, "include" };
1071 /* Suffix to attach to directories searched for commands.
1072 This looks like `MACHINE/VERSION/'. */
1074 static const char *machine_suffix
= 0;
1076 /* Suffix to attach to directories searched for commands.
1077 This is just `MACHINE/'. */
1079 static const char *just_machine_suffix
= 0;
1081 /* Adjusted value of GCC_EXEC_PREFIX envvar. */
1083 static const char *gcc_exec_prefix
;
1085 /* Adjusted value of standard_libexec_prefix. */
1087 static const char *gcc_libexec_prefix
;
1089 /* Default prefixes to attach to command names. */
1091 #ifndef STANDARD_STARTFILE_PREFIX_1
1092 #define STANDARD_STARTFILE_PREFIX_1 "/lib/"
1094 #ifndef STANDARD_STARTFILE_PREFIX_2
1095 #define STANDARD_STARTFILE_PREFIX_2 "/usr/lib/"
1098 #ifdef CROSS_DIRECTORY_STRUCTURE /* Don't use these prefixes for a cross compiler. */
1099 #undef MD_EXEC_PREFIX
1100 #undef MD_STARTFILE_PREFIX
1101 #undef MD_STARTFILE_PREFIX_1
1104 /* If no prefixes defined, use the null string, which will disable them. */
1105 #ifndef MD_EXEC_PREFIX
1106 #define MD_EXEC_PREFIX ""
1108 #ifndef MD_STARTFILE_PREFIX
1109 #define MD_STARTFILE_PREFIX ""
1111 #ifndef MD_STARTFILE_PREFIX_1
1112 #define MD_STARTFILE_PREFIX_1 ""
1115 /* These directories are locations set at configure-time based on the
1116 --prefix option provided to configure. Their initializers are
1117 defined in Makefile.in. These paths are not *directly* used when
1118 gcc_exec_prefix is set because, in that case, we know where the
1119 compiler has been installed, and use paths relative to that
1120 location instead. */
1121 static const char *const standard_exec_prefix
= STANDARD_EXEC_PREFIX
;
1122 static const char *const standard_libexec_prefix
= STANDARD_LIBEXEC_PREFIX
;
1123 static const char *const standard_bindir_prefix
= STANDARD_BINDIR_PREFIX
;
1124 static const char *const standard_startfile_prefix
= STANDARD_STARTFILE_PREFIX
;
1126 /* For native compilers, these are well-known paths containing
1127 components that may be provided by the system. For cross
1128 compilers, these paths are not used. */
1129 static const char *md_exec_prefix
= MD_EXEC_PREFIX
;
1130 static const char *md_startfile_prefix
= MD_STARTFILE_PREFIX
;
1131 static const char *md_startfile_prefix_1
= MD_STARTFILE_PREFIX_1
;
1132 static const char *const standard_startfile_prefix_1
1133 = STANDARD_STARTFILE_PREFIX_1
;
1134 static const char *const standard_startfile_prefix_2
1135 = STANDARD_STARTFILE_PREFIX_2
;
1137 /* A relative path to be used in finding the location of tools
1138 relative to the driver. */
1139 static const char *const tooldir_base_prefix
= TOOLDIR_BASE_PREFIX
;
1141 /* Subdirectory to use for locating libraries. Set by
1142 set_multilib_dir based on the compilation options. */
1144 static const char *multilib_dir
;
1146 /* Subdirectory to use for locating libraries in OS conventions. Set by
1147 set_multilib_dir based on the compilation options. */
1149 static const char *multilib_os_dir
;
1151 /* Structure to keep track of the specs that have been defined so far.
1152 These are accessed using %(specname) in a compiler or link
1157 /* The following 2 fields must be first */
1158 /* to allow EXTRA_SPECS to be initialized */
1159 const char *name
; /* name of the spec. */
1160 const char *ptr
; /* available ptr if no static pointer */
1162 /* The following fields are not initialized */
1163 /* by EXTRA_SPECS */
1164 const char **ptr_spec
; /* pointer to the spec itself. */
1165 struct spec_list
*next
; /* Next spec in linked list. */
1166 int name_len
; /* length of the name */
1167 int alloc_p
; /* whether string was allocated */
1170 #define INIT_STATIC_SPEC(NAME,PTR) \
1171 { NAME, NULL, PTR, (struct spec_list *) 0, sizeof (NAME) - 1, 0 }
1173 /* List of statically defined specs. */
1174 static struct spec_list static_specs
[] =
1176 INIT_STATIC_SPEC ("asm", &asm_spec
),
1177 INIT_STATIC_SPEC ("asm_debug", &asm_debug
),
1178 INIT_STATIC_SPEC ("asm_final", &asm_final_spec
),
1179 INIT_STATIC_SPEC ("asm_options", &asm_options
),
1180 INIT_STATIC_SPEC ("invoke_as", &invoke_as
),
1181 INIT_STATIC_SPEC ("cpp", &cpp_spec
),
1182 INIT_STATIC_SPEC ("cpp_options", &cpp_options
),
1183 INIT_STATIC_SPEC ("cpp_debug_options", &cpp_debug_options
),
1184 INIT_STATIC_SPEC ("cpp_unique_options", &cpp_unique_options
),
1185 INIT_STATIC_SPEC ("trad_capable_cpp", &trad_capable_cpp
),
1186 INIT_STATIC_SPEC ("cc1", &cc1_spec
),
1187 INIT_STATIC_SPEC ("cc1_options", &cc1_options
),
1188 INIT_STATIC_SPEC ("cc1plus", &cc1plus_spec
),
1189 INIT_STATIC_SPEC ("link_gcc_c_sequence", &link_gcc_c_sequence_spec
),
1190 INIT_STATIC_SPEC ("link_ssp", &link_ssp_spec
),
1191 INIT_STATIC_SPEC ("endfile", &endfile_spec
),
1192 INIT_STATIC_SPEC ("link", &link_spec
),
1193 INIT_STATIC_SPEC ("lib", &lib_spec
),
1194 INIT_STATIC_SPEC ("mfwrap", &mfwrap_spec
),
1195 INIT_STATIC_SPEC ("mflib", &mflib_spec
),
1196 INIT_STATIC_SPEC ("link_gomp", &link_gomp_spec
),
1197 INIT_STATIC_SPEC ("libgcc", &libgcc_spec
),
1198 INIT_STATIC_SPEC ("startfile", &startfile_spec
),
1199 INIT_STATIC_SPEC ("cross_compile", &cross_compile
),
1200 INIT_STATIC_SPEC ("version", &compiler_version
),
1201 INIT_STATIC_SPEC ("multilib", &multilib_select
),
1202 INIT_STATIC_SPEC ("multilib_defaults", &multilib_defaults
),
1203 INIT_STATIC_SPEC ("multilib_extra", &multilib_extra
),
1204 INIT_STATIC_SPEC ("multilib_matches", &multilib_matches
),
1205 INIT_STATIC_SPEC ("multilib_exclusions", &multilib_exclusions
),
1206 INIT_STATIC_SPEC ("multilib_options", &multilib_options
),
1207 INIT_STATIC_SPEC ("linker", &linker_name_spec
),
1208 INIT_STATIC_SPEC ("linker_plugin_file", &linker_plugin_file_spec
),
1209 INIT_STATIC_SPEC ("lto_wrapper", <o_wrapper_spec
),
1210 INIT_STATIC_SPEC ("lto_gcc", <o_gcc_spec
),
1211 INIT_STATIC_SPEC ("link_libgcc", &link_libgcc_spec
),
1212 INIT_STATIC_SPEC ("md_exec_prefix", &md_exec_prefix
),
1213 INIT_STATIC_SPEC ("md_startfile_prefix", &md_startfile_prefix
),
1214 INIT_STATIC_SPEC ("md_startfile_prefix_1", &md_startfile_prefix_1
),
1215 INIT_STATIC_SPEC ("startfile_prefix_spec", &startfile_prefix_spec
),
1216 INIT_STATIC_SPEC ("sysroot_spec", &sysroot_spec
),
1217 INIT_STATIC_SPEC ("sysroot_suffix_spec", &sysroot_suffix_spec
),
1218 INIT_STATIC_SPEC ("sysroot_hdrs_suffix_spec", &sysroot_hdrs_suffix_spec
),
1219 INIT_STATIC_SPEC ("self_spec", &self_spec
),
1222 #ifdef EXTRA_SPECS /* additional specs needed */
1223 /* Structure to keep track of just the first two args of a spec_list.
1224 That is all that the EXTRA_SPECS macro gives us. */
1227 const char *const name
;
1228 const char *const ptr
;
1231 static const struct spec_list_1 extra_specs_1
[] = { EXTRA_SPECS
};
1232 static struct spec_list
*extra_specs
= (struct spec_list
*) 0;
1235 /* List of dynamically allocates specs that have been defined so far. */
1237 static struct spec_list
*specs
= (struct spec_list
*) 0;
1239 /* List of static spec functions. */
1241 static const struct spec_function static_spec_functions
[] =
1243 { "getenv", getenv_spec_function
},
1244 { "if-exists", if_exists_spec_function
},
1245 { "if-exists-else", if_exists_else_spec_function
},
1246 { "replace-outfile", replace_outfile_spec_function
},
1247 { "remove-outfile", remove_outfile_spec_function
},
1248 { "version-compare", version_compare_spec_function
},
1249 { "include", include_spec_function
},
1250 { "find-file", find_file_spec_function
},
1251 { "find-plugindir", find_plugindir_spec_function
},
1252 { "print-asm-header", print_asm_header_spec_function
},
1253 { "compare-debug-dump-opt", compare_debug_dump_opt_spec_function
},
1254 { "compare-debug-self-opt", compare_debug_self_opt_spec_function
},
1255 { "compare-debug-auxbase-opt", compare_debug_auxbase_opt_spec_function
},
1256 { "pass-through-libs", pass_through_libs_spec_func
},
1257 #ifdef EXTRA_SPEC_FUNCTIONS
1258 EXTRA_SPEC_FUNCTIONS
1263 static int processing_spec_function
;
1265 /* Add appropriate libgcc specs to OBSTACK, taking into account
1266 various permutations of -shared-libgcc, -shared, and such. */
1268 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
1270 #ifndef USE_LD_AS_NEEDED
1271 #define USE_LD_AS_NEEDED 0
1275 init_gcc_specs (struct obstack
*obstack
, const char *shared_name
,
1276 const char *static_name
, const char *eh_name
)
1280 buf
= concat ("%{static|static-libgcc:", static_name
, " ", eh_name
, "}"
1281 "%{!static:%{!static-libgcc:"
1282 #if USE_LD_AS_NEEDED
1283 "%{!shared-libgcc:",
1284 static_name
, " --as-needed ", shared_name
, " --no-as-needed"
1287 shared_name
, "%{!shared: ", static_name
, "}"
1291 "%{!shared-libgcc:", static_name
, " ", eh_name
, "}"
1292 "%{shared-libgcc:", shared_name
, " ", static_name
, "}"
1296 "%{shared-libgcc:", shared_name
, "}"
1297 "%{!shared-libgcc:", static_name
, "}"
1300 "%{shared:", shared_name
, "}"
1305 obstack_grow (obstack
, buf
, strlen (buf
));
1308 #endif /* ENABLE_SHARED_LIBGCC */
1310 /* Initialize the specs lookup routines. */
1315 struct spec_list
*next
= (struct spec_list
*) 0;
1316 struct spec_list
*sl
= (struct spec_list
*) 0;
1320 return; /* Already initialized. */
1323 fnotice (stderr
, "Using built-in specs.\n");
1326 extra_specs
= XCNEWVEC (struct spec_list
, ARRAY_SIZE (extra_specs_1
));
1328 for (i
= ARRAY_SIZE (extra_specs_1
) - 1; i
>= 0; i
--)
1330 sl
= &extra_specs
[i
];
1331 sl
->name
= extra_specs_1
[i
].name
;
1332 sl
->ptr
= extra_specs_1
[i
].ptr
;
1334 sl
->name_len
= strlen (sl
->name
);
1335 sl
->ptr_spec
= &sl
->ptr
;
1340 for (i
= ARRAY_SIZE (static_specs
) - 1; i
>= 0; i
--)
1342 sl
= &static_specs
[i
];
1347 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
1348 /* ??? If neither -shared-libgcc nor --static-libgcc was
1349 seen, then we should be making an educated guess. Some proposed
1350 heuristics for ELF include:
1352 (1) If "-Wl,--export-dynamic", then it's a fair bet that the
1353 program will be doing dynamic loading, which will likely
1354 need the shared libgcc.
1356 (2) If "-ldl", then it's also a fair bet that we're doing
1359 (3) For each ET_DYN we're linking against (either through -lfoo
1360 or /some/path/foo.so), check to see whether it or one of
1361 its dependencies depends on a shared libgcc.
1365 If the runtime is fixed to look for program headers instead
1366 of calling __register_frame_info at all, for each object,
1367 use the shared libgcc if any EH symbol referenced.
1369 If crtstuff is fixed to not invoke __register_frame_info
1370 automatically, for each object, use the shared libgcc if
1371 any non-empty unwind section found.
1373 Doing any of this probably requires invoking an external program to
1374 do the actual object file scanning. */
1376 const char *p
= libgcc_spec
;
1379 /* Transform the extant libgcc_spec into one that uses the shared libgcc
1380 when given the proper command line arguments. */
1383 if (in_sep
&& *p
== '-' && strncmp (p
, "-lgcc", 5) == 0)
1385 init_gcc_specs (&obstack
,
1387 #ifdef USE_LIBUNWIND_EXCEPTIONS
1393 #ifdef USE_LIBUNWIND_EXCEPTIONS
1394 # ifdef HAVE_LD_STATIC_DYNAMIC
1395 " %{!static:" LD_STATIC_OPTION
"} -lunwind"
1396 " %{!static:" LD_DYNAMIC_OPTION
"}"
1406 else if (in_sep
&& *p
== 'l' && strncmp (p
, "libgcc.a%s", 10) == 0)
1408 /* Ug. We don't know shared library extensions. Hope that
1409 systems that use this form don't do shared libraries. */
1410 init_gcc_specs (&obstack
,
1414 #ifdef USE_LIBUNWIND_EXCEPTIONS
1423 obstack_1grow (&obstack
, *p
);
1424 in_sep
= (*p
== ' ');
1429 obstack_1grow (&obstack
, '\0');
1430 libgcc_spec
= XOBFINISH (&obstack
, const char *);
1433 #ifdef USE_AS_TRADITIONAL_FORMAT
1434 /* Prepend "--traditional-format" to whatever asm_spec we had before. */
1436 static const char tf
[] = "--traditional-format ";
1437 obstack_grow (&obstack
, tf
, sizeof(tf
) - 1);
1438 obstack_grow0 (&obstack
, asm_spec
, strlen (asm_spec
));
1439 asm_spec
= XOBFINISH (&obstack
, const char *);
1443 #if defined LINK_EH_SPEC || defined LINK_BUILDID_SPEC || \
1444 defined LINKER_HASH_STYLE
1445 # ifdef LINK_BUILDID_SPEC
1446 /* Prepend LINK_BUILDID_SPEC to whatever link_spec we had before. */
1447 obstack_grow (&obstack
, LINK_BUILDID_SPEC
, sizeof(LINK_BUILDID_SPEC
) - 1);
1449 # ifdef LINK_EH_SPEC
1450 /* Prepend LINK_EH_SPEC to whatever link_spec we had before. */
1451 obstack_grow (&obstack
, LINK_EH_SPEC
, sizeof(LINK_EH_SPEC
) - 1);
1453 # ifdef LINKER_HASH_STYLE
1454 /* Prepend --hash-style=LINKER_HASH_STYLE to whatever link_spec we had
1457 static const char hash_style
[] = "--hash-style=";
1458 obstack_grow (&obstack
, hash_style
, sizeof(hash_style
) - 1);
1459 obstack_grow (&obstack
, LINKER_HASH_STYLE
, sizeof(LINKER_HASH_STYLE
) - 1);
1460 obstack_1grow (&obstack
, ' ');
1463 obstack_grow0 (&obstack
, link_spec
, strlen (link_spec
));
1464 link_spec
= XOBFINISH (&obstack
, const char *);
1470 /* Change the value of spec NAME to SPEC. If SPEC is empty, then the spec is
1471 removed; If the spec starts with a + then SPEC is added to the end of the
1475 set_spec (const char *name
, const char *spec
)
1477 struct spec_list
*sl
;
1478 const char *old_spec
;
1479 int name_len
= strlen (name
);
1482 /* If this is the first call, initialize the statically allocated specs. */
1485 struct spec_list
*next
= (struct spec_list
*) 0;
1486 for (i
= ARRAY_SIZE (static_specs
) - 1; i
>= 0; i
--)
1488 sl
= &static_specs
[i
];
1495 /* See if the spec already exists. */
1496 for (sl
= specs
; sl
; sl
= sl
->next
)
1497 if (name_len
== sl
->name_len
&& !strcmp (sl
->name
, name
))
1502 /* Not found - make it. */
1503 sl
= XNEW (struct spec_list
);
1504 sl
->name
= xstrdup (name
);
1505 sl
->name_len
= name_len
;
1506 sl
->ptr_spec
= &sl
->ptr
;
1508 *(sl
->ptr_spec
) = "";
1513 old_spec
= *(sl
->ptr_spec
);
1514 *(sl
->ptr_spec
) = ((spec
[0] == '+' && ISSPACE ((unsigned char)spec
[1]))
1515 ? concat (old_spec
, spec
+ 1, NULL
)
1520 fnotice (stderr
, "Setting spec %s to '%s'\n\n", name
, *(sl
->ptr_spec
));
1523 /* Free the old spec. */
1524 if (old_spec
&& sl
->alloc_p
)
1525 free (CONST_CAST(char *, old_spec
));
1530 /* Accumulate a command (program name and args), and run it. */
1532 typedef const char *const_char_p
; /* For DEF_VEC_P. */
1533 DEF_VEC_P(const_char_p
);
1534 DEF_VEC_ALLOC_P(const_char_p
,heap
);
1536 /* Vector of pointers to arguments in the current line of specifications. */
1538 static VEC(const_char_p
,heap
) *argbuf
;
1540 /* Position in the argbuf vector containing the name of the output file
1541 (the value associated with the "-o" flag). */
1543 static int have_o_argbuf_index
= 0;
1545 /* Were the options -c, -S or -E passed. */
1546 static int have_c
= 0;
1548 /* Was the option -o passed. */
1549 static int have_o
= 0;
1551 /* This is the list of suffixes and codes (%g/%u/%U/%j) and the associated
1552 temp file. If the HOST_BIT_BUCKET is used for %j, no entry is made for
1555 static struct temp_name
{
1556 const char *suffix
; /* suffix associated with the code. */
1557 int length
; /* strlen (suffix). */
1558 int unique
; /* Indicates whether %g or %u/%U was used. */
1559 const char *filename
; /* associated filename. */
1560 int filename_length
; /* strlen (filename). */
1561 struct temp_name
*next
;
1564 /* Number of commands executed so far. */
1566 static int execution_count
;
1568 /* Number of commands that exited with a signal. */
1570 static int signal_count
;
1572 /* Allocate the argument vector. */
1577 argbuf
= VEC_alloc (const_char_p
, heap
, 10);
1580 /* Clear out the vector of arguments (after a command is executed). */
1585 VEC_truncate (const_char_p
, argbuf
, 0);
1588 /* Add one argument to the vector at the end.
1589 This is done when a space is seen or at the end of the line.
1590 If DELETE_ALWAYS is nonzero, the arg is a filename
1591 and the file should be deleted eventually.
1592 If DELETE_FAILURE is nonzero, the arg is a filename
1593 and the file should be deleted if this compilation fails. */
1596 store_arg (const char *arg
, int delete_always
, int delete_failure
)
1598 VEC_safe_push (const_char_p
, heap
, argbuf
, arg
);
1600 if (strcmp (arg
, "-o") == 0)
1601 have_o_argbuf_index
= VEC_length (const_char_p
, argbuf
);
1602 if (delete_always
|| delete_failure
)
1605 /* If the temporary file we should delete is specified as
1606 part of a joined argument extract the filename. */
1608 && (p
= strrchr (arg
, '=')))
1610 record_temp_file (arg
, delete_always
, delete_failure
);
1614 /* Load specs from a file name named FILENAME, replacing occurrences of
1615 various different types of line-endings, \r\n, \n\r and just \r, with
1619 load_specs (const char *filename
)
1623 struct stat statbuf
;
1630 fnotice (stderr
, "Reading specs from %s\n", filename
);
1632 /* Open and stat the file. */
1633 desc
= open (filename
, O_RDONLY
, 0);
1635 pfatal_with_name (filename
);
1636 if (stat (filename
, &statbuf
) < 0)
1637 pfatal_with_name (filename
);
1639 /* Read contents of file into BUFFER. */
1640 buffer
= XNEWVEC (char, statbuf
.st_size
+ 1);
1641 readlen
= read (desc
, buffer
, (unsigned) statbuf
.st_size
);
1643 pfatal_with_name (filename
);
1644 buffer
[readlen
] = 0;
1647 specs
= XNEWVEC (char, readlen
+ 1);
1649 for (buffer_p
= buffer
; buffer_p
&& *buffer_p
; buffer_p
++)
1655 if (buffer_p
> buffer
&& *(buffer_p
- 1) == '\n') /* \n\r */
1657 else if (*(buffer_p
+ 1) == '\n') /* \r\n */
1671 /* Read compilation specs from a file named FILENAME,
1672 replacing the default ones.
1674 A suffix which starts with `*' is a definition for
1675 one of the machine-specific sub-specs. The "suffix" should be
1676 *asm, *cc1, *cpp, *link, *startfile, etc.
1677 The corresponding spec is stored in asm_spec, etc.,
1678 rather than in the `compilers' vector.
1680 Anything invalid in the file is a fatal error. */
1683 read_specs (const char *filename
, int main_p
)
1688 buffer
= load_specs (filename
);
1690 /* Scan BUFFER for specs, putting them in the vector. */
1696 char *in
, *out
, *p1
, *p2
, *p3
;
1698 /* Advance P in BUFFER to the next nonblank nocomment line. */
1699 p
= skip_whitespace (p
);
1703 /* Is this a special command that starts with '%'? */
1704 /* Don't allow this for the main specs file, since it would
1705 encourage people to overwrite it. */
1706 if (*p
== '%' && !main_p
)
1709 while (*p
&& *p
!= '\n')
1715 if (!strncmp (p1
, "%include", sizeof ("%include") - 1)
1716 && (p1
[sizeof "%include" - 1] == ' '
1717 || p1
[sizeof "%include" - 1] == '\t'))
1721 p1
+= sizeof ("%include");
1722 while (*p1
== ' ' || *p1
== '\t')
1725 if (*p1
++ != '<' || p
[-2] != '>')
1726 fatal_error ("specs %%include syntax malformed after "
1728 (long) (p1
- buffer
+ 1));
1731 new_filename
= find_a_file (&startfile_prefixes
, p1
, R_OK
, true);
1732 read_specs (new_filename
? new_filename
: p1
, FALSE
);
1735 else if (!strncmp (p1
, "%include_noerr", sizeof "%include_noerr" - 1)
1736 && (p1
[sizeof "%include_noerr" - 1] == ' '
1737 || p1
[sizeof "%include_noerr" - 1] == '\t'))
1741 p1
+= sizeof "%include_noerr";
1742 while (*p1
== ' ' || *p1
== '\t')
1745 if (*p1
++ != '<' || p
[-2] != '>')
1746 fatal_error ("specs %%include syntax malformed after "
1748 (long) (p1
- buffer
+ 1));
1751 new_filename
= find_a_file (&startfile_prefixes
, p1
, R_OK
, true);
1753 read_specs (new_filename
, FALSE
);
1754 else if (verbose_flag
)
1755 fnotice (stderr
, "could not find specs file %s\n", p1
);
1758 else if (!strncmp (p1
, "%rename", sizeof "%rename" - 1)
1759 && (p1
[sizeof "%rename" - 1] == ' '
1760 || p1
[sizeof "%rename" - 1] == '\t'))
1763 struct spec_list
*sl
;
1764 struct spec_list
*newsl
;
1766 /* Get original name. */
1767 p1
+= sizeof "%rename";
1768 while (*p1
== ' ' || *p1
== '\t')
1771 if (! ISALPHA ((unsigned char) *p1
))
1772 fatal_error ("specs %%rename syntax malformed after "
1774 (long) (p1
- buffer
));
1777 while (*p2
&& !ISSPACE ((unsigned char) *p2
))
1780 if (*p2
!= ' ' && *p2
!= '\t')
1781 fatal_error ("specs %%rename syntax malformed after "
1783 (long) (p2
- buffer
));
1787 while (*p2
== ' ' || *p2
== '\t')
1790 if (! ISALPHA ((unsigned char) *p2
))
1791 fatal_error ("specs %%rename syntax malformed after "
1793 (long) (p2
- buffer
));
1795 /* Get new spec name. */
1797 while (*p3
&& !ISSPACE ((unsigned char) *p3
))
1801 fatal_error ("specs %%rename syntax malformed after "
1803 (long) (p3
- buffer
));
1806 for (sl
= specs
; sl
; sl
= sl
->next
)
1807 if (name_len
== sl
->name_len
&& !strcmp (sl
->name
, p1
))
1811 fatal_error ("specs %s spec was not found to be renamed", p1
);
1813 if (strcmp (p1
, p2
) == 0)
1816 for (newsl
= specs
; newsl
; newsl
= newsl
->next
)
1817 if (strcmp (newsl
->name
, p2
) == 0)
1818 fatal_error ("%s: attempt to rename spec %qs to "
1819 "already defined spec %qs",
1824 fnotice (stderr
, "rename spec %s to %s\n", p1
, p2
);
1826 fnotice (stderr
, "spec is '%s'\n\n", *(sl
->ptr_spec
));
1830 set_spec (p2
, *(sl
->ptr_spec
));
1832 free (CONST_CAST (char *, *(sl
->ptr_spec
)));
1834 *(sl
->ptr_spec
) = "";
1839 fatal_error ("specs unknown %% command after %ld characters",
1840 (long) (p1
- buffer
));
1843 /* Find the colon that should end the suffix. */
1845 while (*p1
&& *p1
!= ':' && *p1
!= '\n')
1848 /* The colon shouldn't be missing. */
1850 fatal_error ("specs file malformed after %ld characters",
1851 (long) (p1
- buffer
));
1853 /* Skip back over trailing whitespace. */
1855 while (p2
> buffer
&& (p2
[-1] == ' ' || p2
[-1] == '\t'))
1858 /* Copy the suffix to a string. */
1859 suffix
= save_string (p
, p2
- p
);
1860 /* Find the next line. */
1861 p
= skip_whitespace (p1
+ 1);
1863 fatal_error ("specs file malformed after %ld characters",
1864 (long) (p
- buffer
));
1867 /* Find next blank line or end of string. */
1868 while (*p1
&& !(*p1
== '\n' && (p1
[1] == '\n' || p1
[1] == '\0')))
1871 /* Specs end at the blank line and do not include the newline. */
1872 spec
= save_string (p
, p1
- p
);
1875 /* Delete backslash-newline sequences from the spec. */
1880 if (in
[0] == '\\' && in
[1] == '\n')
1882 else if (in
[0] == '#')
1883 while (*in
&& *in
!= '\n')
1891 if (suffix
[0] == '*')
1893 if (! strcmp (suffix
, "*link_command"))
1894 link_command_spec
= spec
;
1896 set_spec (suffix
+ 1, spec
);
1900 /* Add this pair to the vector. */
1902 = XRESIZEVEC (struct compiler
, compilers
, n_compilers
+ 2);
1904 compilers
[n_compilers
].suffix
= suffix
;
1905 compilers
[n_compilers
].spec
= spec
;
1907 memset (&compilers
[n_compilers
], 0, sizeof compilers
[n_compilers
]);
1911 link_command_spec
= spec
;
1914 if (link_command_spec
== 0)
1915 fatal_error ("spec file has no spec for linking");
1918 /* Record the names of temporary files we tell compilers to write,
1919 and delete them at the end of the run. */
1921 /* This is the common prefix we use to make temp file names.
1922 It is chosen once for each run of this program.
1923 It is substituted into a spec by %g or %j.
1924 Thus, all temp file names contain this prefix.
1925 In practice, all temp file names start with this prefix.
1927 This prefix comes from the envvar TMPDIR if it is defined;
1928 otherwise, from the P_tmpdir macro if that is defined;
1929 otherwise, in /usr/tmp or /tmp;
1930 or finally the current directory if all else fails. */
1932 static const char *temp_filename
;
1934 /* Length of the prefix. */
1936 static int temp_filename_length
;
1938 /* Define the list of temporary files to delete. */
1943 struct temp_file
*next
;
1946 /* Queue of files to delete on success or failure of compilation. */
1947 static struct temp_file
*always_delete_queue
;
1948 /* Queue of files to delete on failure of compilation. */
1949 static struct temp_file
*failure_delete_queue
;
1951 /* Record FILENAME as a file to be deleted automatically.
1952 ALWAYS_DELETE nonzero means delete it if all compilation succeeds;
1953 otherwise delete it in any case.
1954 FAIL_DELETE nonzero means delete it if a compilation step fails;
1955 otherwise delete it in any case. */
1958 record_temp_file (const char *filename
, int always_delete
, int fail_delete
)
1960 char *const name
= xstrdup (filename
);
1964 struct temp_file
*temp
;
1965 for (temp
= always_delete_queue
; temp
; temp
= temp
->next
)
1966 if (! filename_cmp (name
, temp
->name
))
1969 temp
= XNEW (struct temp_file
);
1970 temp
->next
= always_delete_queue
;
1972 always_delete_queue
= temp
;
1979 struct temp_file
*temp
;
1980 for (temp
= failure_delete_queue
; temp
; temp
= temp
->next
)
1981 if (! filename_cmp (name
, temp
->name
))
1984 temp
= XNEW (struct temp_file
);
1985 temp
->next
= failure_delete_queue
;
1987 failure_delete_queue
= temp
;
1993 /* Delete all the temporary files whose names we previously recorded. */
1995 #ifndef DELETE_IF_ORDINARY
1996 #define DELETE_IF_ORDINARY(NAME,ST,VERBOSE_FLAG) \
1999 if (stat (NAME, &ST) >= 0 && S_ISREG (ST.st_mode)) \
2000 if (unlink (NAME) < 0) \
2002 perror_with_name (NAME); \
2007 delete_if_ordinary (const char *name
)
2013 printf ("Delete %s? (y or n) ", name
);
2017 while ((c
= getchar ()) != '\n' && c
!= EOF
)
2020 if (i
== 'y' || i
== 'Y')
2022 DELETE_IF_ORDINARY (name
, st
, verbose_flag
);
2026 delete_temp_files (void)
2028 struct temp_file
*temp
;
2030 for (temp
= always_delete_queue
; temp
; temp
= temp
->next
)
2031 delete_if_ordinary (temp
->name
);
2032 always_delete_queue
= 0;
2035 /* Delete all the files to be deleted on error. */
2038 delete_failure_queue (void)
2040 struct temp_file
*temp
;
2042 for (temp
= failure_delete_queue
; temp
; temp
= temp
->next
)
2043 delete_if_ordinary (temp
->name
);
2047 clear_failure_queue (void)
2049 failure_delete_queue
= 0;
2052 /* Call CALLBACK for each path in PATHS, breaking out early if CALLBACK
2054 If DO_MULTI is true iterate over the paths twice, first with multilib
2055 suffix then without, otherwise iterate over the paths once without
2056 adding a multilib suffix. When DO_MULTI is true, some attempt is made
2057 to avoid visiting the same path twice, but we could do better. For
2058 instance, /usr/lib/../lib is considered different from /usr/lib.
2059 At least EXTRA_SPACE chars past the end of the path passed to
2060 CALLBACK are available for use by the callback.
2061 CALLBACK_INFO allows extra parameters to be passed to CALLBACK.
2063 Returns the value returned by CALLBACK. */
2066 for_each_path (const struct path_prefix
*paths
,
2069 void *(*callback
) (char *, void *),
2070 void *callback_info
)
2072 struct prefix_list
*pl
;
2073 const char *multi_dir
= NULL
;
2074 const char *multi_os_dir
= NULL
;
2075 const char *multi_suffix
;
2076 const char *just_multi_suffix
;
2079 bool skip_multi_dir
= false;
2080 bool skip_multi_os_dir
= false;
2082 multi_suffix
= machine_suffix
;
2083 just_multi_suffix
= just_machine_suffix
;
2084 if (do_multi
&& multilib_dir
&& strcmp (multilib_dir
, ".") != 0)
2086 multi_dir
= concat (multilib_dir
, dir_separator_str
, NULL
);
2087 multi_suffix
= concat (multi_suffix
, multi_dir
, NULL
);
2088 just_multi_suffix
= concat (just_multi_suffix
, multi_dir
, NULL
);
2090 if (do_multi
&& multilib_os_dir
&& strcmp (multilib_os_dir
, ".") != 0)
2091 multi_os_dir
= concat (multilib_os_dir
, dir_separator_str
, NULL
);
2095 size_t multi_dir_len
= 0;
2096 size_t multi_os_dir_len
= 0;
2098 size_t just_suffix_len
;
2102 multi_dir_len
= strlen (multi_dir
);
2104 multi_os_dir_len
= strlen (multi_os_dir
);
2105 suffix_len
= strlen (multi_suffix
);
2106 just_suffix_len
= strlen (just_multi_suffix
);
2110 len
= paths
->max_len
+ extra_space
+ 1;
2111 if (suffix_len
> multi_os_dir_len
)
2114 len
+= multi_os_dir_len
;
2115 path
= XNEWVEC (char, len
);
2118 for (pl
= paths
->plist
; pl
!= 0; pl
= pl
->next
)
2120 len
= strlen (pl
->prefix
);
2121 memcpy (path
, pl
->prefix
, len
);
2123 /* Look first in MACHINE/VERSION subdirectory. */
2124 if (!skip_multi_dir
)
2126 memcpy (path
+ len
, multi_suffix
, suffix_len
+ 1);
2127 ret
= callback (path
, callback_info
);
2132 /* Some paths are tried with just the machine (ie. target)
2133 subdir. This is used for finding as, ld, etc. */
2135 && pl
->require_machine_suffix
== 2)
2137 memcpy (path
+ len
, just_multi_suffix
, just_suffix_len
+ 1);
2138 ret
= callback (path
, callback_info
);
2143 /* Now try the base path. */
2144 if (!pl
->require_machine_suffix
2145 && !(pl
->os_multilib
? skip_multi_os_dir
: skip_multi_dir
))
2147 const char *this_multi
;
2148 size_t this_multi_len
;
2150 if (pl
->os_multilib
)
2152 this_multi
= multi_os_dir
;
2153 this_multi_len
= multi_os_dir_len
;
2157 this_multi
= multi_dir
;
2158 this_multi_len
= multi_dir_len
;
2162 memcpy (path
+ len
, this_multi
, this_multi_len
+ 1);
2166 ret
= callback (path
, callback_info
);
2174 if (multi_dir
== NULL
&& multi_os_dir
== NULL
)
2177 /* Run through the paths again, this time without multilibs.
2178 Don't repeat any we have already seen. */
2181 free (CONST_CAST (char *, multi_dir
));
2183 free (CONST_CAST (char *, multi_suffix
));
2184 multi_suffix
= machine_suffix
;
2185 free (CONST_CAST (char *, just_multi_suffix
));
2186 just_multi_suffix
= just_machine_suffix
;
2189 skip_multi_dir
= true;
2192 free (CONST_CAST (char *, multi_os_dir
));
2193 multi_os_dir
= NULL
;
2196 skip_multi_os_dir
= true;
2201 free (CONST_CAST (char *, multi_dir
));
2202 free (CONST_CAST (char *, multi_suffix
));
2203 free (CONST_CAST (char *, just_multi_suffix
));
2206 free (CONST_CAST (char *, multi_os_dir
));
2212 /* Callback for build_search_list. Adds path to obstack being built. */
2214 struct add_to_obstack_info
{
2221 add_to_obstack (char *path
, void *data
)
2223 struct add_to_obstack_info
*info
= (struct add_to_obstack_info
*) data
;
2225 if (info
->check_dir
&& !is_directory (path
, false))
2228 if (!info
->first_time
)
2229 obstack_1grow (info
->ob
, PATH_SEPARATOR
);
2231 obstack_grow (info
->ob
, path
, strlen (path
));
2233 info
->first_time
= false;
2237 /* Add or change the value of an environment variable, outputting the
2238 change to standard error if in verbose mode. */
2240 xputenv (const char *string
)
2243 fnotice (stderr
, "%s\n", string
);
2244 putenv (CONST_CAST (char *, string
));
2247 /* Build a list of search directories from PATHS.
2248 PREFIX is a string to prepend to the list.
2249 If CHECK_DIR_P is true we ensure the directory exists.
2250 If DO_MULTI is true, multilib paths are output first, then
2252 This is used mostly by putenv_from_prefixes so we use `collect_obstack'.
2253 It is also used by the --print-search-dirs flag. */
2256 build_search_list (const struct path_prefix
*paths
, const char *prefix
,
2257 bool check_dir
, bool do_multi
)
2259 struct add_to_obstack_info info
;
2261 info
.ob
= &collect_obstack
;
2262 info
.check_dir
= check_dir
;
2263 info
.first_time
= true;
2265 obstack_grow (&collect_obstack
, prefix
, strlen (prefix
));
2266 obstack_1grow (&collect_obstack
, '=');
2268 for_each_path (paths
, do_multi
, 0, add_to_obstack
, &info
);
2270 obstack_1grow (&collect_obstack
, '\0');
2271 return XOBFINISH (&collect_obstack
, char *);
2274 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
2278 putenv_from_prefixes (const struct path_prefix
*paths
, const char *env_var
,
2281 xputenv (build_search_list (paths
, env_var
, true, do_multi
));
2284 /* Check whether NAME can be accessed in MODE. This is like access,
2285 except that it never considers directories to be executable. */
2288 access_check (const char *name
, int mode
)
2294 if (stat (name
, &st
) < 0
2295 || S_ISDIR (st
.st_mode
))
2299 return access (name
, mode
);
2302 /* Callback for find_a_file. Appends the file name to the directory
2303 path. If the resulting file exists in the right mode, return the
2304 full pathname to the file. */
2306 struct file_at_path_info
{
2315 file_at_path (char *path
, void *data
)
2317 struct file_at_path_info
*info
= (struct file_at_path_info
*) data
;
2318 size_t len
= strlen (path
);
2320 memcpy (path
+ len
, info
->name
, info
->name_len
);
2321 len
+= info
->name_len
;
2323 /* Some systems have a suffix for executable files.
2324 So try appending that first. */
2325 if (info
->suffix_len
)
2327 memcpy (path
+ len
, info
->suffix
, info
->suffix_len
+ 1);
2328 if (access_check (path
, info
->mode
) == 0)
2333 if (access_check (path
, info
->mode
) == 0)
2339 /* Search for NAME using the prefix list PREFIXES. MODE is passed to
2340 access to check permissions. If DO_MULTI is true, search multilib
2341 paths then non-multilib paths, otherwise do not search multilib paths.
2342 Return 0 if not found, otherwise return its name, allocated with malloc. */
2345 find_a_file (const struct path_prefix
*pprefix
, const char *name
, int mode
,
2348 struct file_at_path_info info
;
2350 #ifdef DEFAULT_ASSEMBLER
2351 if (! strcmp (name
, "as") && access (DEFAULT_ASSEMBLER
, mode
) == 0)
2352 return xstrdup (DEFAULT_ASSEMBLER
);
2355 #ifdef DEFAULT_LINKER
2356 if (! strcmp(name
, "ld") && access (DEFAULT_LINKER
, mode
) == 0)
2357 return xstrdup (DEFAULT_LINKER
);
2360 /* Determine the filename to execute (special case for absolute paths). */
2362 if (IS_ABSOLUTE_PATH (name
))
2364 if (access (name
, mode
) == 0)
2365 return xstrdup (name
);
2371 info
.suffix
= (mode
& X_OK
) != 0 ? HOST_EXECUTABLE_SUFFIX
: "";
2372 info
.name_len
= strlen (info
.name
);
2373 info
.suffix_len
= strlen (info
.suffix
);
2376 return (char*) for_each_path (pprefix
, do_multi
,
2377 info
.name_len
+ info
.suffix_len
,
2378 file_at_path
, &info
);
2381 /* Ranking of prefixes in the sort list. -B prefixes are put before
2384 enum path_prefix_priority
2386 PREFIX_PRIORITY_B_OPT
,
2387 PREFIX_PRIORITY_LAST
2390 /* Add an entry for PREFIX in PLIST. The PLIST is kept in ascending
2391 order according to PRIORITY. Within each PRIORITY, new entries are
2394 If WARN is nonzero, we will warn if no file is found
2395 through this prefix. WARN should point to an int
2396 which will be set to 1 if this entry is used.
2398 COMPONENT is the value to be passed to update_path.
2400 REQUIRE_MACHINE_SUFFIX is 1 if this prefix can't be used without
2401 the complete value of machine_suffix.
2402 2 means try both machine_suffix and just_machine_suffix. */
2405 add_prefix (struct path_prefix
*pprefix
, const char *prefix
,
2406 const char *component
, /* enum prefix_priority */ int priority
,
2407 int require_machine_suffix
, int os_multilib
)
2409 struct prefix_list
*pl
, **prev
;
2412 for (prev
= &pprefix
->plist
;
2413 (*prev
) != NULL
&& (*prev
)->priority
<= priority
;
2414 prev
= &(*prev
)->next
)
2417 /* Keep track of the longest prefix. */
2419 prefix
= update_path (prefix
, component
);
2420 len
= strlen (prefix
);
2421 if (len
> pprefix
->max_len
)
2422 pprefix
->max_len
= len
;
2424 pl
= XNEW (struct prefix_list
);
2425 pl
->prefix
= prefix
;
2426 pl
->require_machine_suffix
= require_machine_suffix
;
2427 pl
->priority
= priority
;
2428 pl
->os_multilib
= os_multilib
;
2430 /* Insert after PREV. */
2435 /* Same as add_prefix, but prepending target_system_root to prefix. */
2436 /* The target_system_root prefix has been relocated by gcc_exec_prefix. */
2438 add_sysrooted_prefix (struct path_prefix
*pprefix
, const char *prefix
,
2439 const char *component
,
2440 /* enum prefix_priority */ int priority
,
2441 int require_machine_suffix
, int os_multilib
)
2443 if (!IS_ABSOLUTE_PATH (prefix
))
2444 fatal_error ("system path %qs is not absolute", prefix
);
2446 if (target_system_root
)
2448 char *sysroot_no_trailing_dir_separator
= xstrdup (target_system_root
);
2449 size_t sysroot_len
= strlen (target_system_root
);
2452 && target_system_root
[sysroot_len
- 1] == DIR_SEPARATOR
)
2453 sysroot_no_trailing_dir_separator
[sysroot_len
- 1] = '\0';
2455 if (target_sysroot_suffix
)
2456 prefix
= concat (target_sysroot_suffix
, prefix
, NULL
);
2457 prefix
= concat (sysroot_no_trailing_dir_separator
, prefix
, NULL
);
2458 free (sysroot_no_trailing_dir_separator
);
2460 /* We have to override this because GCC's notion of sysroot
2461 moves along with GCC. */
2465 add_prefix (pprefix
, prefix
, component
, priority
,
2466 require_machine_suffix
, os_multilib
);
2469 /* Execute the command specified by the arguments on the current line of spec.
2470 When using pipes, this includes several piped-together commands
2471 with `|' between them.
2473 Return 0 if successful, -1 if failed. */
2479 int n_commands
; /* # of command. */
2481 struct pex_obj
*pex
;
2484 const char *prog
; /* program name. */
2485 const char **argv
; /* vector of args. */
2489 struct command
*commands
; /* each command buffer with above info. */
2491 gcc_assert (!processing_spec_function
);
2495 string
= find_a_file (&exec_prefixes
,
2496 VEC_index (const_char_p
, argbuf
, 0), X_OK
, false);
2498 VEC_replace (const_char_p
, argbuf
, 0, string
);
2499 insert_wrapper (wrapper_string
);
2502 /* Count # of piped commands. */
2503 for (n_commands
= 1, i
= 0; VEC_iterate (const_char_p
, argbuf
, i
, arg
); i
++)
2504 if (strcmp (arg
, "|") == 0)
2507 /* Get storage for each command. */
2508 commands
= (struct command
*) alloca (n_commands
* sizeof (struct command
));
2510 /* Split argbuf into its separate piped processes,
2511 and record info about each one.
2512 Also search for the programs that are to be run. */
2514 VEC_safe_push (const_char_p
, heap
, argbuf
, 0);
2516 commands
[0].prog
= VEC_index (const_char_p
, argbuf
, 0); /* first command. */
2517 commands
[0].argv
= VEC_address (const_char_p
, argbuf
);
2519 if (!wrapper_string
)
2521 string
= find_a_file (&exec_prefixes
, commands
[0].prog
, X_OK
, false);
2522 commands
[0].argv
[0] = (string
) ? string
: commands
[0].argv
[0];
2525 for (n_commands
= 1, i
= 0; VEC_iterate (const_char_p
, argbuf
, i
, arg
); i
++)
2526 if (arg
&& strcmp (arg
, "|") == 0)
2527 { /* each command. */
2528 #if defined (__MSDOS__) || defined (OS2) || defined (VMS)
2529 fatal_error ("-pipe not supported");
2531 VEC_replace (const_char_p
, argbuf
, i
, 0); /* Termination of
2533 commands
[n_commands
].prog
= VEC_index (const_char_p
, argbuf
, i
+ 1);
2534 commands
[n_commands
].argv
2535 = &(VEC_address (const_char_p
, argbuf
))[i
+ 1];
2536 string
= find_a_file (&exec_prefixes
, commands
[n_commands
].prog
,
2539 commands
[n_commands
].argv
[0] = string
;
2543 /* If -v, print what we are about to do, and maybe query. */
2547 /* For help listings, put a blank line between sub-processes. */
2548 if (print_help_list
)
2549 fputc ('\n', stderr
);
2551 /* Print each piped command as a separate line. */
2552 for (i
= 0; i
< n_commands
; i
++)
2554 const char *const *j
;
2556 if (verbose_only_flag
)
2558 for (j
= commands
[i
].argv
; *j
; j
++)
2561 for (p
= *j
; *p
; ++p
)
2562 if (!ISALNUM ((unsigned char) *p
)
2563 && *p
!= '_' && *p
!= '/' && *p
!= '-' && *p
!= '.')
2567 fprintf (stderr
, " \"");
2568 for (p
= *j
; *p
; ++p
)
2570 if (*p
== '"' || *p
== '\\' || *p
== '$')
2571 fputc ('\\', stderr
);
2574 fputc ('"', stderr
);
2576 /* If it's empty, print "". */
2578 fprintf (stderr
, " \"\"");
2580 fprintf (stderr
, " %s", *j
);
2584 for (j
= commands
[i
].argv
; *j
; j
++)
2585 /* If it's empty, print "". */
2587 fprintf (stderr
, " \"\"");
2589 fprintf (stderr
, " %s", *j
);
2591 /* Print a pipe symbol after all but the last command. */
2592 if (i
+ 1 != n_commands
)
2593 fprintf (stderr
, " |");
2594 fprintf (stderr
, "\n");
2597 if (verbose_only_flag
!= 0)
2599 /* verbose_only_flag should act as if the spec was
2600 executed, so increment execution_count before
2601 returning. This prevents spurious warnings about
2602 unused linker input files, etc. */
2607 fnotice (stderr
, "\nGo ahead? (y or n) ");
2611 while (getchar () != '\n')
2614 if (i
!= 'y' && i
!= 'Y')
2619 #ifdef ENABLE_VALGRIND_CHECKING
2620 /* Run the each command through valgrind. To simplify prepending the
2621 path to valgrind and the option "-q" (for quiet operation unless
2622 something triggers), we allocate a separate argv array. */
2624 for (i
= 0; i
< n_commands
; i
++)
2630 for (argc
= 0; commands
[i
].argv
[argc
] != NULL
; argc
++)
2633 argv
= XALLOCAVEC (const char *, argc
+ 3);
2635 argv
[0] = VALGRIND_PATH
;
2637 for (j
= 2; j
< argc
+ 2; j
++)
2638 argv
[j
] = commands
[i
].argv
[j
- 2];
2641 commands
[i
].argv
= argv
;
2642 commands
[i
].prog
= argv
[0];
2646 /* Run each piped subprocess. */
2648 pex
= pex_init (PEX_USE_PIPES
| ((report_times
|| report_times_to_file
)
2649 ? PEX_RECORD_TIMES
: 0),
2650 progname
, temp_filename
);
2652 fatal_error ("pex_init failed: %m");
2654 for (i
= 0; i
< n_commands
; i
++)
2658 const char *string
= commands
[i
].argv
[0];
2660 errmsg
= pex_run (pex
,
2661 ((i
+ 1 == n_commands
? PEX_LAST
: 0)
2662 | (string
== commands
[i
].prog
? PEX_SEARCH
: 0)),
2663 string
, CONST_CAST (char **, commands
[i
].argv
),
2668 fatal_error (errmsg
);
2672 pfatal_with_name (errmsg
);
2676 if (string
!= commands
[i
].prog
)
2677 free (CONST_CAST (char *, string
));
2682 /* Wait for all the subprocesses to finish. */
2686 struct pex_time
*times
= NULL
;
2689 statuses
= (int *) alloca (n_commands
* sizeof (int));
2690 if (!pex_get_status (pex
, n_commands
, statuses
))
2691 fatal_error ("failed to get exit status: %m");
2693 if (report_times
|| report_times_to_file
)
2695 times
= (struct pex_time
*) alloca (n_commands
* sizeof (struct pex_time
));
2696 if (!pex_get_times (pex
, n_commands
, times
))
2697 fatal_error ("failed to get process times: %m");
2702 for (i
= 0; i
< n_commands
; ++i
)
2704 int status
= statuses
[i
];
2706 if (WIFSIGNALED (status
))
2709 /* SIGPIPE is a special case. It happens in -pipe mode
2710 when the compiler dies before the preprocessor is done,
2711 or the assembler dies before the compiler is done.
2712 There's generally been an error already, and this is
2713 just fallout. So don't generate another error unless
2714 we would otherwise have succeeded. */
2715 if (WTERMSIG (status
) == SIGPIPE
2716 && (signal_count
|| greatest_status
>= MIN_FATAL_STATUS
))
2723 internal_error ("%s (program %s)",
2724 strsignal (WTERMSIG (status
)), commands
[i
].prog
);
2726 else if (WIFEXITED (status
)
2727 && WEXITSTATUS (status
) >= MIN_FATAL_STATUS
)
2729 if (WEXITSTATUS (status
) > greatest_status
)
2730 greatest_status
= WEXITSTATUS (status
);
2734 if (report_times
|| report_times_to_file
)
2736 struct pex_time
*pt
= ×
[i
];
2739 ut
= ((double) pt
->user_seconds
2740 + (double) pt
->user_microseconds
/ 1.0e6
);
2741 st
= ((double) pt
->system_seconds
2742 + (double) pt
->system_microseconds
/ 1.0e6
);
2747 fnotice (stderr
, "# %s %.2f %.2f\n",
2748 commands
[i
].prog
, ut
, st
);
2750 if (report_times_to_file
)
2753 const char *const *j
;
2755 fprintf (report_times_to_file
, "%g %g", ut
, st
);
2757 for (j
= &commands
[i
].prog
; *j
; j
= &commands
[i
].argv
[++c
])
2760 for (p
= *j
; *p
; ++p
)
2761 if (*p
== '"' || *p
== '\\' || *p
== '$'
2767 fprintf (report_times_to_file
, " \"");
2768 for (p
= *j
; *p
; ++p
)
2770 if (*p
== '"' || *p
== '\\' || *p
== '$')
2771 fputc ('\\', report_times_to_file
);
2772 fputc (*p
, report_times_to_file
);
2774 fputc ('"', report_times_to_file
);
2777 fprintf (report_times_to_file
, " %s", *j
);
2780 fputc ('\n', report_times_to_file
);
2790 /* Find all the switches given to us
2791 and make a vector describing them.
2792 The elements of the vector are strings, one per switch given.
2793 If a switch uses following arguments, then the `part1' field
2794 is the switch itself and the `args' field
2795 is a null-terminated vector containing the following arguments.
2796 Bits in the `live_cond' field are:
2797 SWITCH_LIVE to indicate this switch is true in a conditional spec.
2798 SWITCH_FALSE to indicate this switch is overridden by a later switch.
2799 SWITCH_IGNORE to indicate this switch should be ignored (used in %<S).
2800 SWITCH_IGNORE_PERMANENTLY to indicate this switch should be ignored
2801 in all do_spec calls afterwards. Used for %<S from self specs.
2802 The `validated' field is nonzero if any spec has looked at this switch;
2803 if it remains zero at the end of the run, it must be meaningless. */
2805 #define SWITCH_LIVE (1 << 0)
2806 #define SWITCH_FALSE (1 << 1)
2807 #define SWITCH_IGNORE (1 << 2)
2808 #define SWITCH_IGNORE_PERMANENTLY (1 << 3)
2809 #define SWITCH_KEEP_FOR_GCC (1 << 4)
2815 unsigned int live_cond
;
2816 unsigned char validated
;
2817 unsigned char ordering
;
2820 static struct switchstr
*switches
;
2822 static int n_switches
;
2824 static int n_switches_alloc
;
2826 /* Set to zero if -fcompare-debug is disabled, positive if it's
2827 enabled and we're running the first compilation, negative if it's
2828 enabled and we're running the second compilation. For most of the
2829 time, it's in the range -1..1, but it can be temporarily set to 2
2830 or 3 to indicate that the -fcompare-debug flags didn't come from
2831 the command-line, but rather from the GCC_COMPARE_DEBUG environment
2832 variable, until a synthesized -fcompare-debug flag is added to the
2836 /* Set to nonzero if we've seen the -fcompare-debug-second flag. */
2837 int compare_debug_second
;
2839 /* Set to the flags that should be passed to the second compilation in
2840 a -fcompare-debug compilation. */
2841 const char *compare_debug_opt
;
2843 static struct switchstr
*switches_debug_check
[2];
2845 static int n_switches_debug_check
[2];
2847 static int n_switches_alloc_debug_check
[2];
2849 static char *debug_check_temp_file
[2];
2851 /* Language is one of three things:
2853 1) The name of a real programming language.
2854 2) NULL, indicating that no one has figured out
2856 3) '*', indicating that the file should be passed
2861 const char *language
;
2862 struct compiler
*incompiler
;
2867 /* Also a vector of input files specified. */
2869 static struct infile
*infiles
;
2873 static int n_infiles_alloc
;
2875 /* True if multiple input files are being compiled to a single
2878 static bool combine_inputs
;
2880 /* This counts the number of libraries added by lang_specific_driver, so that
2881 we can tell if there were any user supplied any files or libraries. */
2883 static int added_libraries
;
2885 /* And a vector of corresponding output files is made up later. */
2887 const char **outfiles
;
2889 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2891 /* Convert NAME to a new name if it is the standard suffix. DO_EXE
2892 is true if we should look for an executable suffix. DO_OBJ
2893 is true if we should look for an object suffix. */
2896 convert_filename (const char *name
, int do_exe ATTRIBUTE_UNUSED
,
2897 int do_obj ATTRIBUTE_UNUSED
)
2899 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2907 len
= strlen (name
);
2909 #ifdef HAVE_TARGET_OBJECT_SUFFIX
2910 /* Convert x.o to x.obj if TARGET_OBJECT_SUFFIX is ".obj". */
2911 if (do_obj
&& len
> 2
2912 && name
[len
- 2] == '.'
2913 && name
[len
- 1] == 'o')
2915 obstack_grow (&obstack
, name
, len
- 2);
2916 obstack_grow0 (&obstack
, TARGET_OBJECT_SUFFIX
, strlen (TARGET_OBJECT_SUFFIX
));
2917 name
= XOBFINISH (&obstack
, const char *);
2921 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2922 /* If there is no filetype, make it the executable suffix (which includes
2923 the "."). But don't get confused if we have just "-o". */
2924 if (! do_exe
|| TARGET_EXECUTABLE_SUFFIX
[0] == 0 || (len
== 2 && name
[0] == '-'))
2927 for (i
= len
- 1; i
>= 0; i
--)
2928 if (IS_DIR_SEPARATOR (name
[i
]))
2931 for (i
++; i
< len
; i
++)
2935 obstack_grow (&obstack
, name
, len
);
2936 obstack_grow0 (&obstack
, TARGET_EXECUTABLE_SUFFIX
,
2937 strlen (TARGET_EXECUTABLE_SUFFIX
));
2938 name
= XOBFINISH (&obstack
, const char *);
2945 /* Display the command line switches accepted by gcc. */
2949 printf (_("Usage: %s [options] file...\n"), progname
);
2950 fputs (_("Options:\n"), stdout
);
2952 fputs (_(" -pass-exit-codes Exit with highest error code from a phase\n"), stdout
);
2953 fputs (_(" --help Display this information\n"), stdout
);
2954 fputs (_(" --target-help Display target specific command line options\n"), stdout
);
2955 fputs (_(" --help={target|optimizers|warnings|params|[^]{joined|separate|undocumented}}[,...]\n"), stdout
);
2956 fputs (_(" Display specific types of command line options\n"), stdout
);
2958 fputs (_(" (Use '-v --help' to display command line options of sub-processes)\n"), stdout
);
2959 fputs (_(" --version Display compiler version information\n"), stdout
);
2960 fputs (_(" -dumpspecs Display all of the built in spec strings\n"), stdout
);
2961 fputs (_(" -dumpversion Display the version of the compiler\n"), stdout
);
2962 fputs (_(" -dumpmachine Display the compiler's target processor\n"), stdout
);
2963 fputs (_(" -print-search-dirs Display the directories in the compiler's search path\n"), stdout
);
2964 fputs (_(" -print-libgcc-file-name Display the name of the compiler's companion library\n"), stdout
);
2965 fputs (_(" -print-file-name=<lib> Display the full path to library <lib>\n"), stdout
);
2966 fputs (_(" -print-prog-name=<prog> Display the full path to compiler component <prog>\n"), stdout
);
2967 fputs (_(" -print-multi-directory Display the root directory for versions of libgcc\n"), stdout
);
2969 -print-multi-lib Display the mapping between command line options and\n\
2970 multiple library search directories\n"), stdout
);
2971 fputs (_(" -print-multi-os-directory Display the relative path to OS libraries\n"), stdout
);
2972 fputs (_(" -print-sysroot Display the target libraries directory\n"), stdout
);
2973 fputs (_(" -print-sysroot-headers-suffix Display the sysroot suffix used to find headers\n"), stdout
);
2974 fputs (_(" -Wa,<options> Pass comma-separated <options> on to the assembler\n"), stdout
);
2975 fputs (_(" -Wp,<options> Pass comma-separated <options> on to the preprocessor\n"), stdout
);
2976 fputs (_(" -Wl,<options> Pass comma-separated <options> on to the linker\n"), stdout
);
2977 fputs (_(" -Xassembler <arg> Pass <arg> on to the assembler\n"), stdout
);
2978 fputs (_(" -Xpreprocessor <arg> Pass <arg> on to the preprocessor\n"), stdout
);
2979 fputs (_(" -Xlinker <arg> Pass <arg> on to the linker\n"), stdout
);
2980 fputs (_(" -save-temps Do not delete intermediate files\n"), stdout
);
2981 fputs (_(" -save-temps=<arg> Do not delete intermediate files\n"), stdout
);
2983 -no-canonical-prefixes Do not canonicalize paths when building relative\n\
2984 prefixes to other gcc components\n"), stdout
);
2985 fputs (_(" -pipe Use pipes rather than intermediate files\n"), stdout
);
2986 fputs (_(" -time Time the execution of each subprocess\n"), stdout
);
2987 fputs (_(" -specs=<file> Override built-in specs with the contents of <file>\n"), stdout
);
2988 fputs (_(" -std=<standard> Assume that the input sources are for <standard>\n"), stdout
);
2990 --sysroot=<directory> Use <directory> as the root directory for headers\n\
2991 and libraries\n"), stdout
);
2992 fputs (_(" -B <directory> Add <directory> to the compiler's search paths\n"), stdout
);
2993 fputs (_(" -v Display the programs invoked by the compiler\n"), stdout
);
2994 fputs (_(" -### Like -v but options quoted and commands not executed\n"), stdout
);
2995 fputs (_(" -E Preprocess only; do not compile, assemble or link\n"), stdout
);
2996 fputs (_(" -S Compile only; do not assemble or link\n"), stdout
);
2997 fputs (_(" -c Compile and assemble, but do not link\n"), stdout
);
2998 fputs (_(" -o <file> Place the output into <file>\n"), stdout
);
2999 fputs (_(" -pie Create a position independent executable\n"), stdout
);
3000 fputs (_(" -shared Create a shared library\n"), stdout
);
3002 -x <language> Specify the language of the following input files\n\
3003 Permissible languages include: c c++ assembler none\n\
3004 'none' means revert to the default behavior of\n\
3005 guessing the language based on the file's extension\n\
3009 \nOptions starting with -g, -f, -m, -O, -W, or --param are automatically\n\
3010 passed on to the various sub-processes invoked by %s. In order to pass\n\
3011 other options on to these processes the -W<letter> options must be used.\n\
3014 /* The rest of the options are displayed by invocations of the various
3019 add_preprocessor_option (const char *option
, int len
)
3021 VEC_safe_push (char_p
, heap
, preprocessor_options
,
3022 save_string (option
, len
));
3026 add_assembler_option (const char *option
, int len
)
3028 VEC_safe_push (char_p
, heap
, assembler_options
, save_string (option
, len
));
3032 add_linker_option (const char *option
, int len
)
3034 VEC_safe_push (char_p
, heap
, linker_options
, save_string (option
, len
));
3037 /* Allocate space for an input file in infiles. */
3042 if (n_infiles_alloc
== 0)
3044 n_infiles_alloc
= 16;
3045 infiles
= XNEWVEC (struct infile
, n_infiles_alloc
);
3047 else if (n_infiles_alloc
== n_infiles
)
3049 n_infiles_alloc
*= 2;
3050 infiles
= XRESIZEVEC (struct infile
, infiles
, n_infiles_alloc
);
3054 /* Store an input file with the given NAME and LANGUAGE in
3058 add_infile (const char *name
, const char *language
)
3061 infiles
[n_infiles
].name
= name
;
3062 infiles
[n_infiles
++].language
= language
;
3065 /* Allocate space for a switch in switches. */
3070 if (n_switches_alloc
== 0)
3072 n_switches_alloc
= 16;
3073 switches
= XNEWVEC (struct switchstr
, n_switches_alloc
);
3075 else if (n_switches_alloc
== n_switches
)
3077 n_switches_alloc
*= 2;
3078 switches
= XRESIZEVEC (struct switchstr
, switches
, n_switches_alloc
);
3082 /* Save an option OPT with N_ARGS arguments in array ARGS, marking it
3083 as validated if VALIDATED. */
3086 save_switch (const char *opt
, size_t n_args
, const char *const *args
,
3090 switches
[n_switches
].part1
= opt
+ 1;
3092 switches
[n_switches
].args
= 0;
3095 switches
[n_switches
].args
= XNEWVEC (const char *, n_args
+ 1);
3096 memcpy (switches
[n_switches
].args
, args
, n_args
* sizeof (const char *));
3097 switches
[n_switches
].args
[n_args
] = NULL
;
3100 switches
[n_switches
].live_cond
= 0;
3101 switches
[n_switches
].validated
= validated
;
3102 switches
[n_switches
].ordering
= 0;
3106 /* Handle an option DECODED that is unknown to the option-processing
3110 driver_unknown_option_callback (const struct cl_decoded_option
*decoded
)
3112 const char *opt
= decoded
->arg
;
3113 if (opt
[1] == 'W' && opt
[2] == 'n' && opt
[3] == 'o' && opt
[4] == '-'
3114 && !(decoded
->errors
& CL_ERR_NEGATIVE
))
3116 /* Leave unknown -Wno-* options for the compiler proper, to be
3117 diagnosed only if there are warnings. */
3118 save_switch (decoded
->canonical_option
[0],
3119 decoded
->canonical_option_num_elements
- 1,
3120 &decoded
->canonical_option
[1], false);
3127 /* Handle an option DECODED that is not marked as CL_DRIVER.
3128 LANG_MASK will always be CL_DRIVER. */
3131 driver_wrong_lang_callback (const struct cl_decoded_option
*decoded
,
3132 unsigned int lang_mask ATTRIBUTE_UNUSED
)
3134 /* At this point, non-driver options are accepted (and expected to
3135 be passed down by specs) unless marked to be rejected by the
3136 driver. Options to be rejected by the driver but accepted by the
3137 compilers proper are treated just like completely unknown
3139 const struct cl_option
*option
= &cl_options
[decoded
->opt_index
];
3141 if (option
->cl_reject_driver
)
3142 error ("unrecognized command line option %qs",
3143 decoded
->orig_option_with_args_text
);
3145 save_switch (decoded
->canonical_option
[0],
3146 decoded
->canonical_option_num_elements
- 1,
3147 &decoded
->canonical_option
[1], false);
3150 static const char *spec_lang
= 0;
3151 static int last_language_n_infiles
;
3153 /* Handle a driver option; arguments and return value as for
3157 driver_handle_option (struct gcc_options
*opts
,
3158 struct gcc_options
*opts_set
,
3159 const struct cl_decoded_option
*decoded
,
3160 unsigned int lang_mask ATTRIBUTE_UNUSED
, int kind
,
3162 const struct cl_option_handlers
*handlers ATTRIBUTE_UNUSED
,
3163 diagnostic_context
*dc
)
3165 size_t opt_index
= decoded
->opt_index
;
3166 const char *arg
= decoded
->arg
;
3167 const char *compare_debug_replacement_opt
;
3168 int value
= decoded
->value
;
3169 bool validated
= false;
3170 bool do_save
= true;
3172 gcc_assert (opts
== &global_options
);
3173 gcc_assert (opts_set
== &global_options_set
);
3174 gcc_assert (kind
== DK_UNSPECIFIED
);
3175 gcc_assert (loc
== UNKNOWN_LOCATION
);
3176 gcc_assert (dc
== global_dc
);
3182 struct spec_list
*sl
;
3184 for (sl
= specs
; sl
; sl
= sl
->next
)
3185 printf ("*%s:\n%s\n\n", sl
->name
, *(sl
->ptr_spec
));
3186 if (link_command_spec
)
3187 printf ("*link_command:\n%s\n\n", link_command_spec
);
3191 case OPT_dumpversion
:
3192 printf ("%s\n", spec_version
);
3195 case OPT_dumpmachine
:
3196 printf ("%s\n", spec_machine
);
3202 /* CPP driver cannot obtain switch from cc1_options. */
3204 add_preprocessor_option ("--version", strlen ("--version"));
3205 add_assembler_option ("--version", strlen ("--version"));
3206 add_linker_option ("--version", strlen ("--version"));
3210 print_help_list
= 1;
3212 /* CPP driver cannot obtain switch from cc1_options. */
3214 add_preprocessor_option ("--help", 6);
3215 add_assembler_option ("--help", 6);
3216 add_linker_option ("--help", 6);
3220 print_subprocess_help
= 2;
3223 case OPT__target_help
:
3224 print_subprocess_help
= 1;
3226 /* CPP driver cannot obtain switch from cc1_options. */
3228 add_preprocessor_option ("--target-help", 13);
3229 add_assembler_option ("--target-help", 13);
3230 add_linker_option ("--target-help", 13);
3233 case OPT_pass_exit_codes
:
3234 case OPT_print_search_dirs
:
3235 case OPT_print_file_name_
:
3236 case OPT_print_prog_name_
:
3237 case OPT_print_multi_lib
:
3238 case OPT_print_multi_directory
:
3239 case OPT_print_sysroot
:
3240 case OPT_print_multi_os_directory
:
3241 case OPT_print_sysroot_headers_suffix
:
3244 /* These options set the variables specified in common.opt
3245 automatically, and do not need to be saved for spec
3250 case OPT_print_libgcc_file_name
:
3251 print_file_name
= "libgcc.a";
3255 case OPT_fcompare_debug_second
:
3256 compare_debug_second
= 1;
3259 case OPT_fcompare_debug
:
3263 compare_debug_replacement_opt
= "-fcompare-debug=";
3265 goto compare_debug_with_arg
;
3268 compare_debug_replacement_opt
= "-fcompare-debug=-gtoggle";
3270 goto compare_debug_with_arg
;
3277 case OPT_fcompare_debug_
:
3278 compare_debug_replacement_opt
= decoded
->canonical_option
[0];
3279 compare_debug_with_arg
:
3280 gcc_assert (decoded
->canonical_option_num_elements
== 1);
3281 gcc_assert (arg
!= NULL
);
3286 if (compare_debug
< 0)
3287 compare_debug_opt
= NULL
;
3289 compare_debug_opt
= arg
;
3290 save_switch (compare_debug_replacement_opt
, 0, NULL
, validated
);
3296 /* Pass the rest of this option to the assembler. */
3298 /* Split the argument at commas. */
3300 for (j
= 0; arg
[j
]; j
++)
3303 add_assembler_option (arg
+ prev
, j
- prev
);
3307 /* Record the part after the last comma. */
3308 add_assembler_option (arg
+ prev
, j
- prev
);
3316 /* Pass the rest of this option to the preprocessor. */
3318 /* Split the argument at commas. */
3320 for (j
= 0; arg
[j
]; j
++)
3323 add_preprocessor_option (arg
+ prev
, j
- prev
);
3327 /* Record the part after the last comma. */
3328 add_preprocessor_option (arg
+ prev
, j
- prev
);
3336 /* Split the argument at commas. */
3338 for (j
= 0; arg
[j
]; j
++)
3341 add_infile (save_string (arg
+ prev
, j
- prev
), "*");
3344 /* Record the part after the last comma. */
3345 add_infile (arg
+ prev
, "*");
3351 add_infile (arg
, "*");
3355 case OPT_Xpreprocessor
:
3356 add_preprocessor_option (arg
, strlen (arg
));
3360 case OPT_Xassembler
:
3361 add_assembler_option (arg
, strlen (arg
));
3366 /* POSIX allows separation of -l and the lib arg; canonicalize
3367 by concatenating -l with its arg */
3368 add_infile (concat ("-l", arg
, NULL
), "*");
3373 /* Similarly, canonicalize -L for linkers that may not accept
3374 separate arguments. */
3375 save_switch (concat ("-L", arg
, NULL
), 0, NULL
, validated
);
3380 save_switch (concat ("-F", arg
, NULL
), 0, NULL
, validated
);
3383 case OPT_save_temps
:
3384 save_temps_flag
= SAVE_TEMPS_CWD
;
3388 case OPT_save_temps_
:
3389 if (strcmp (arg
, "cwd") == 0)
3390 save_temps_flag
= SAVE_TEMPS_CWD
;
3391 else if (strcmp (arg
, "obj") == 0
3392 || strcmp (arg
, "object") == 0)
3393 save_temps_flag
= SAVE_TEMPS_OBJ
;
3395 fatal_error ("%qs is an unknown -save-temps option",
3396 decoded
->orig_option_with_args_text
);
3399 case OPT_no_canonical_prefixes
:
3400 /* Already handled as a special case, so ignored here. */
3406 /* These options set the variables specified in common.opt
3407 automatically, but do need to be saved for spec
3413 struct user_specs
*user
= XNEW (struct user_specs
);
3415 user
->next
= (struct user_specs
*) 0;
3416 user
->filename
= arg
;
3417 if (user_specs_tail
)
3418 user_specs_tail
->next
= user
;
3420 user_specs_head
= user
;
3421 user_specs_tail
= user
;
3427 target_system_root
= arg
;
3428 target_system_root_changed
= 1;
3433 if (report_times_to_file
)
3434 fclose (report_times_to_file
);
3435 report_times_to_file
= fopen (arg
, "a");
3441 This is similar to -v except that there is no execution
3442 of the commands and the echoed arguments are quoted. It
3443 is intended for use in shell scripts to capture the
3444 driver-generated command line. */
3445 verbose_only_flag
++;
3452 size_t len
= strlen (arg
);
3454 /* Catch the case where the user has forgotten to append a
3455 directory separator to the path. Note, they may be using
3456 -B to add an executable name prefix, eg "i386-elf-", in
3457 order to distinguish between multiple installations of
3458 GCC in the same directory. Hence we must check to see
3459 if appending a directory separator actually makes a
3460 valid directory name. */
3461 if (!IS_DIR_SEPARATOR (arg
[len
- 1])
3462 && is_directory (arg
, false))
3464 char *tmp
= XNEWVEC (char, len
+ 2);
3466 tmp
[len
] = DIR_SEPARATOR
;
3471 add_prefix (&exec_prefixes
, arg
, NULL
,
3472 PREFIX_PRIORITY_B_OPT
, 0, 0);
3473 add_prefix (&startfile_prefixes
, arg
, NULL
,
3474 PREFIX_PRIORITY_B_OPT
, 0, 0);
3475 add_prefix (&include_prefixes
, arg
, NULL
,
3476 PREFIX_PRIORITY_B_OPT
, 0, 0);
3483 if (!strcmp (spec_lang
, "none"))
3484 /* Suppress the warning if -xnone comes after the last input
3485 file, because alternate command interfaces like g++ might
3486 find it useful to place -xnone after each input file. */
3489 last_language_n_infiles
= n_infiles
;
3495 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX) || defined(HAVE_TARGET_OBJECT_SUFFIX)
3496 arg
= convert_filename (arg
, ! have_c
, 0);
3498 /* Save the output name in case -save-temps=obj was used. */
3499 save_temps_prefix
= xstrdup (arg
);
3500 /* On some systems, ld cannot handle "-o" without a space. So
3501 split the option from its argument. */
3502 save_switch ("-o", 1, &arg
, validated
);
3505 case OPT_static_libgcc
:
3506 case OPT_shared_libgcc
:
3507 case OPT_static_libgfortran
:
3508 case OPT_static_libstdc__
:
3509 /* These are always valid, since gcc.c itself understands the
3510 first two, gfortranspec.c understands -static-libgfortran and
3511 g++spec.c understands -static-libstdc++ */
3516 /* Various driver options need no special processing at this
3517 point, having been handled in a prescan above or being
3518 handled by specs. */
3523 save_switch (decoded
->canonical_option
[0],
3524 decoded
->canonical_option_num_elements
- 1,
3525 &decoded
->canonical_option
[1], validated
);
3529 /* Put the driver's standard set of option handlers in *HANDLERS. */
3532 set_option_handlers (struct cl_option_handlers
*handlers
)
3534 handlers
->unknown_option_callback
= driver_unknown_option_callback
;
3535 handlers
->wrong_lang_callback
= driver_wrong_lang_callback
;
3536 handlers
->num_handlers
= 3;
3537 handlers
->handlers
[0].handler
= driver_handle_option
;
3538 handlers
->handlers
[0].mask
= CL_DRIVER
;
3539 handlers
->handlers
[1].handler
= common_handle_option
;
3540 handlers
->handlers
[1].mask
= CL_COMMON
;
3541 handlers
->handlers
[2].handler
= target_handle_option
;
3542 handlers
->handlers
[2].mask
= CL_TARGET
;
3545 /* Create the vector `switches' and its contents.
3546 Store its length in `n_switches'. */
3549 process_command (unsigned int decoded_options_count
,
3550 struct cl_decoded_option
*decoded_options
)
3554 const char *tooldir_prefix
;
3555 char *(*get_relative_prefix
) (const char *, const char *,
3556 const char *) = NULL
;
3557 struct cl_option_handlers handlers
;
3560 gcc_exec_prefix
= getenv ("GCC_EXEC_PREFIX");
3564 added_libraries
= 0;
3566 /* Figure compiler version from version string. */
3568 compiler_version
= temp1
= xstrdup (version_string
);
3570 for (; *temp1
; ++temp1
)
3579 /* Handle any -no-canonical-prefixes flag early, to assign the function
3580 that builds relative prefixes. This function creates default search
3581 paths that are needed later in normal option handling. */
3583 for (j
= 1; j
< decoded_options_count
; j
++)
3585 if (decoded_options
[j
].opt_index
== OPT_no_canonical_prefixes
)
3587 get_relative_prefix
= make_relative_prefix_ignore_links
;
3591 if (! get_relative_prefix
)
3592 get_relative_prefix
= make_relative_prefix
;
3594 /* Set up the default search paths. If there is no GCC_EXEC_PREFIX,
3595 see if we can create it from the pathname specified in
3596 decoded_options[0].arg. */
3598 gcc_libexec_prefix
= standard_libexec_prefix
;
3600 /* FIXME: make_relative_prefix doesn't yet work for VMS. */
3601 if (!gcc_exec_prefix
)
3603 gcc_exec_prefix
= get_relative_prefix (decoded_options
[0].arg
,
3604 standard_bindir_prefix
,
3605 standard_exec_prefix
);
3606 gcc_libexec_prefix
= get_relative_prefix (decoded_options
[0].arg
,
3607 standard_bindir_prefix
,
3608 standard_libexec_prefix
);
3609 if (gcc_exec_prefix
)
3610 xputenv (concat ("GCC_EXEC_PREFIX=", gcc_exec_prefix
, NULL
));
3614 /* make_relative_prefix requires a program name, but
3615 GCC_EXEC_PREFIX is typically a directory name with a trailing
3616 / (which is ignored by make_relative_prefix), so append a
3618 char *tmp_prefix
= concat (gcc_exec_prefix
, "gcc", NULL
);
3619 gcc_libexec_prefix
= get_relative_prefix (tmp_prefix
,
3620 standard_exec_prefix
,
3621 standard_libexec_prefix
);
3623 /* The path is unrelocated, so fallback to the original setting. */
3624 if (!gcc_libexec_prefix
)
3625 gcc_libexec_prefix
= standard_libexec_prefix
;
3631 /* From this point onward, gcc_exec_prefix is non-null if the toolchain
3632 is relocated. The toolchain was either relocated using GCC_EXEC_PREFIX
3633 or an automatically created GCC_EXEC_PREFIX from
3634 decoded_options[0].arg. */
3636 /* Do language-specific adjustment/addition of flags. */
3637 lang_specific_driver (&decoded_options
, &decoded_options_count
,
3640 if (gcc_exec_prefix
)
3642 int len
= strlen (gcc_exec_prefix
);
3644 if (len
> (int) sizeof ("/lib/gcc/") - 1
3645 && (IS_DIR_SEPARATOR (gcc_exec_prefix
[len
-1])))
3647 temp
= gcc_exec_prefix
+ len
- sizeof ("/lib/gcc/") + 1;
3648 if (IS_DIR_SEPARATOR (*temp
)
3649 && filename_ncmp (temp
+ 1, "lib", 3) == 0
3650 && IS_DIR_SEPARATOR (temp
[4])
3651 && filename_ncmp (temp
+ 5, "gcc", 3) == 0)
3652 len
-= sizeof ("/lib/gcc/") - 1;
3655 set_std_prefix (gcc_exec_prefix
, len
);
3656 add_prefix (&exec_prefixes
, gcc_libexec_prefix
, "GCC",
3657 PREFIX_PRIORITY_LAST
, 0, 0);
3658 add_prefix (&startfile_prefixes
, gcc_exec_prefix
, "GCC",
3659 PREFIX_PRIORITY_LAST
, 0, 0);
3662 /* COMPILER_PATH and LIBRARY_PATH have values
3663 that are lists of directory names with colons. */
3665 temp
= getenv ("COMPILER_PATH");
3668 const char *startp
, *endp
;
3669 char *nstore
= (char *) alloca (strlen (temp
) + 3);
3671 startp
= endp
= temp
;
3674 if (*endp
== PATH_SEPARATOR
|| *endp
== 0)
3676 strncpy (nstore
, startp
, endp
- startp
);
3678 strcpy (nstore
, concat (".", dir_separator_str
, NULL
));
3679 else if (!IS_DIR_SEPARATOR (endp
[-1]))
3681 nstore
[endp
- startp
] = DIR_SEPARATOR
;
3682 nstore
[endp
- startp
+ 1] = 0;
3685 nstore
[endp
- startp
] = 0;
3686 add_prefix (&exec_prefixes
, nstore
, 0,
3687 PREFIX_PRIORITY_LAST
, 0, 0);
3688 add_prefix (&include_prefixes
, nstore
, 0,
3689 PREFIX_PRIORITY_LAST
, 0, 0);
3692 endp
= startp
= endp
+ 1;
3699 temp
= getenv (LIBRARY_PATH_ENV
);
3700 if (temp
&& *cross_compile
== '0')
3702 const char *startp
, *endp
;
3703 char *nstore
= (char *) alloca (strlen (temp
) + 3);
3705 startp
= endp
= temp
;
3708 if (*endp
== PATH_SEPARATOR
|| *endp
== 0)
3710 strncpy (nstore
, startp
, endp
- startp
);
3712 strcpy (nstore
, concat (".", dir_separator_str
, NULL
));
3713 else if (!IS_DIR_SEPARATOR (endp
[-1]))
3715 nstore
[endp
- startp
] = DIR_SEPARATOR
;
3716 nstore
[endp
- startp
+ 1] = 0;
3719 nstore
[endp
- startp
] = 0;
3720 add_prefix (&startfile_prefixes
, nstore
, NULL
,
3721 PREFIX_PRIORITY_LAST
, 0, 1);
3724 endp
= startp
= endp
+ 1;
3731 /* Use LPATH like LIBRARY_PATH (for the CMU build program). */
3732 temp
= getenv ("LPATH");
3733 if (temp
&& *cross_compile
== '0')
3735 const char *startp
, *endp
;
3736 char *nstore
= (char *) alloca (strlen (temp
) + 3);
3738 startp
= endp
= temp
;
3741 if (*endp
== PATH_SEPARATOR
|| *endp
== 0)
3743 strncpy (nstore
, startp
, endp
- startp
);
3745 strcpy (nstore
, concat (".", dir_separator_str
, NULL
));
3746 else if (!IS_DIR_SEPARATOR (endp
[-1]))
3748 nstore
[endp
- startp
] = DIR_SEPARATOR
;
3749 nstore
[endp
- startp
+ 1] = 0;
3752 nstore
[endp
- startp
] = 0;
3753 add_prefix (&startfile_prefixes
, nstore
, NULL
,
3754 PREFIX_PRIORITY_LAST
, 0, 1);
3757 endp
= startp
= endp
+ 1;
3764 /* Process the options and store input files and switches in their
3767 last_language_n_infiles
= -1;
3769 set_option_handlers (&handlers
);
3771 for (j
= 1; j
< decoded_options_count
; j
++)
3773 switch (decoded_options
[j
].opt_index
)
3785 for (j
= 1; j
< decoded_options_count
; j
++)
3787 if (decoded_options
[j
].opt_index
== OPT_SPECIAL_input_file
)
3789 const char *arg
= decoded_options
[j
].arg
;
3790 const char *p
= strrchr (arg
, '@');
3794 #ifdef HAVE_TARGET_OBJECT_SUFFIX
3795 arg
= convert_filename (arg
, 0, access (arg
, F_OK
));
3797 /* For LTO static archive support we handle input file
3798 specifications that are composed of a filename and
3799 an offset like FNAME@OFFSET. */
3802 && sscanf (p
, "@%li%n", &offset
, &consumed
) >= 1
3803 && strlen (p
) == (unsigned int)consumed
)
3805 fname
= (char *)xmalloc (p
- arg
+ 1);
3806 memcpy (fname
, arg
, p
- arg
);
3807 fname
[p
- arg
] = '\0';
3808 /* Only accept non-stdin and existing FNAME parts, otherwise
3809 try with the full name. */
3810 if (strcmp (fname
, "-") == 0 || access (fname
, F_OK
) < 0)
3813 fname
= xstrdup (arg
);
3817 fname
= xstrdup (arg
);
3819 if (strcmp (fname
, "-") != 0 && access (fname
, F_OK
) < 0)
3820 perror_with_name (fname
);
3822 add_infile (arg
, spec_lang
);
3828 read_cmdline_option (&global_options
, &global_options_set
,
3829 decoded_options
+ j
, UNKNOWN_LOCATION
,
3830 CL_DRIVER
, &handlers
, global_dc
);
3833 /* If -save-temps=obj and -o name, create the prefix to use for %b.
3834 Otherwise just make -save-temps=obj the same as -save-temps=cwd. */
3835 if (save_temps_flag
== SAVE_TEMPS_OBJ
&& save_temps_prefix
!= NULL
)
3837 save_temps_length
= strlen (save_temps_prefix
);
3838 temp
= strrchr (lbasename (save_temps_prefix
), '.');
3841 save_temps_length
-= strlen (temp
);
3842 save_temps_prefix
[save_temps_length
] = '\0';
3846 else if (save_temps_prefix
!= NULL
)
3848 free (save_temps_prefix
);
3849 save_temps_prefix
= NULL
;
3852 if (save_temps_flag
&& use_pipes
)
3854 /* -save-temps overrides -pipe, so that temp files are produced */
3855 if (save_temps_flag
)
3856 warning (0, "-pipe ignored because -save-temps specified");
3862 const char *gcd
= getenv ("GCC_COMPARE_DEBUG");
3864 if (gcd
&& gcd
[0] == '-')
3867 compare_debug_opt
= gcd
;
3869 else if (gcd
&& *gcd
&& strcmp (gcd
, "0"))
3872 compare_debug_opt
= "-gtoggle";
3875 else if (compare_debug
< 0)
3878 gcc_assert (!compare_debug_opt
);
3881 /* Set up the search paths. We add directories that we expect to
3882 contain GNU Toolchain components before directories specified by
3883 the machine description so that we will find GNU components (like
3884 the GNU assembler) before those of the host system. */
3886 /* If we don't know where the toolchain has been installed, use the
3887 configured-in locations. */
3888 if (!gcc_exec_prefix
)
3891 add_prefix (&exec_prefixes
, standard_libexec_prefix
, "GCC",
3892 PREFIX_PRIORITY_LAST
, 1, 0);
3893 add_prefix (&exec_prefixes
, standard_libexec_prefix
, "BINUTILS",
3894 PREFIX_PRIORITY_LAST
, 2, 0);
3895 add_prefix (&exec_prefixes
, standard_exec_prefix
, "BINUTILS",
3896 PREFIX_PRIORITY_LAST
, 2, 0);
3898 add_prefix (&startfile_prefixes
, standard_exec_prefix
, "BINUTILS",
3899 PREFIX_PRIORITY_LAST
, 1, 0);
3902 gcc_assert (!IS_ABSOLUTE_PATH (tooldir_base_prefix
));
3903 tooldir_prefix
= concat (tooldir_base_prefix
, spec_machine
,
3904 dir_separator_str
, NULL
);
3906 /* Look for tools relative to the location from which the driver is
3907 running, or, if that is not available, the configured prefix. */
3909 = concat (gcc_exec_prefix
? gcc_exec_prefix
: standard_exec_prefix
,
3910 spec_machine
, dir_separator_str
,
3911 spec_version
, dir_separator_str
, tooldir_prefix
, NULL
);
3913 add_prefix (&exec_prefixes
,
3914 concat (tooldir_prefix
, "bin", dir_separator_str
, NULL
),
3915 "BINUTILS", PREFIX_PRIORITY_LAST
, 0, 0);
3916 add_prefix (&startfile_prefixes
,
3917 concat (tooldir_prefix
, "lib", dir_separator_str
, NULL
),
3918 "BINUTILS", PREFIX_PRIORITY_LAST
, 0, 1);
3920 #if defined(TARGET_SYSTEM_ROOT_RELOCATABLE) && !defined(VMS)
3921 /* If the normal TARGET_SYSTEM_ROOT is inside of $exec_prefix,
3922 then consider it to relocate with the rest of the GCC installation
3923 if GCC_EXEC_PREFIX is set.
3924 ``make_relative_prefix'' is not compiled for VMS, so don't call it. */
3925 if (target_system_root
&& !target_system_root_changed
&& gcc_exec_prefix
)
3927 char *tmp_prefix
= get_relative_prefix (decoded_options
[0].arg
,
3928 standard_bindir_prefix
,
3929 target_system_root
);
3930 if (tmp_prefix
&& access_check (tmp_prefix
, F_OK
) == 0)
3932 target_system_root
= tmp_prefix
;
3933 target_system_root_changed
= 1;
3938 /* More prefixes are enabled in main, after we read the specs file
3939 and determine whether this is cross-compilation or not. */
3941 if (n_infiles
== last_language_n_infiles
&& spec_lang
!= 0)
3942 warning (0, "%<-x %s%> after last input file has no effect", spec_lang
);
3944 if (compare_debug
== 2 || compare_debug
== 3)
3947 switches
[n_switches
].part1
= concat ("fcompare-debug=",
3950 switches
[n_switches
].args
= 0;
3951 switches
[n_switches
].live_cond
= 0;
3952 switches
[n_switches
].validated
= 0;
3953 switches
[n_switches
].ordering
= 0;
3958 /* Ensure we only invoke each subprocess once. */
3959 if (print_subprocess_help
|| print_help_list
|| print_version
)
3963 /* Create a dummy input file, so that we can pass
3964 the help option on to the various sub-processes. */
3965 add_infile ("help-dummy", "c");
3969 switches
[n_switches
].part1
= 0;
3971 infiles
[n_infiles
].name
= 0;
3974 /* Store switches not filtered out by %<S in spec in COLLECT_GCC_OPTIONS
3975 and place that in the environment. */
3978 set_collect_gcc_options (void)
3983 /* Build COLLECT_GCC_OPTIONS to have all of the options specified to
3985 obstack_grow (&collect_obstack
, "COLLECT_GCC_OPTIONS=",
3986 sizeof ("COLLECT_GCC_OPTIONS=") - 1);
3989 for (i
= 0; (int) i
< n_switches
; i
++)
3991 const char *const *args
;
3994 obstack_grow (&collect_obstack
, " ", 1);
3998 /* Ignore elided switches. */
3999 if ((switches
[i
].live_cond
4000 & (SWITCH_IGNORE
| SWITCH_KEEP_FOR_GCC
))
4004 obstack_grow (&collect_obstack
, "'-", 2);
4005 q
= switches
[i
].part1
;
4006 while ((p
= strchr (q
, '\'')))
4008 obstack_grow (&collect_obstack
, q
, p
- q
);
4009 obstack_grow (&collect_obstack
, "'\\''", 4);
4012 obstack_grow (&collect_obstack
, q
, strlen (q
));
4013 obstack_grow (&collect_obstack
, "'", 1);
4015 for (args
= switches
[i
].args
; args
&& *args
; args
++)
4017 obstack_grow (&collect_obstack
, " '", 2);
4019 while ((p
= strchr (q
, '\'')))
4021 obstack_grow (&collect_obstack
, q
, p
- q
);
4022 obstack_grow (&collect_obstack
, "'\\''", 4);
4025 obstack_grow (&collect_obstack
, q
, strlen (q
));
4026 obstack_grow (&collect_obstack
, "'", 1);
4029 obstack_grow (&collect_obstack
, "\0", 1);
4030 xputenv (XOBFINISH (&collect_obstack
, char *));
4033 /* Process a spec string, accumulating and running commands. */
4035 /* These variables describe the input file name.
4036 input_file_number is the index on outfiles of this file,
4037 so that the output file name can be stored for later use by %o.
4038 input_basename is the start of the part of the input file
4039 sans all directory names, and basename_length is the number
4040 of characters starting there excluding the suffix .c or whatever. */
4042 static const char *gcc_input_filename
;
4043 static int input_file_number
;
4044 size_t input_filename_length
;
4045 static int basename_length
;
4046 static int suffixed_basename_length
;
4047 static const char *input_basename
;
4048 static const char *input_suffix
;
4049 #ifndef HOST_LACKS_INODE_NUMBERS
4050 static struct stat input_stat
;
4052 static int input_stat_set
;
4054 /* The compiler used to process the current input file. */
4055 static struct compiler
*input_file_compiler
;
4057 /* These are variables used within do_spec and do_spec_1. */
4059 /* Nonzero if an arg has been started and not yet terminated
4060 (with space, tab or newline). */
4061 static int arg_going
;
4063 /* Nonzero means %d or %g has been seen; the next arg to be terminated
4064 is a temporary file name. */
4065 static int delete_this_arg
;
4067 /* Nonzero means %w has been seen; the next arg to be terminated
4068 is the output file name of this compilation. */
4069 static int this_is_output_file
;
4071 /* Nonzero means %s has been seen; the next arg to be terminated
4072 is the name of a library file and we should try the standard
4073 search dirs for it. */
4074 static int this_is_library_file
;
4076 /* Nonzero means %T has been seen; the next arg to be terminated
4077 is the name of a linker script and we should try all of the
4078 standard search dirs for it. If it is found insert a --script
4079 command line switch and then substitute the full path in place,
4080 otherwise generate an error message. */
4081 static int this_is_linker_script
;
4083 /* Nonzero means that the input of this command is coming from a pipe. */
4084 static int input_from_pipe
;
4086 /* Nonnull means substitute this for any suffix when outputting a switches
4088 static const char *suffix_subst
;
4090 /* If there is an argument being accumulated, terminate it and store it. */
4093 end_going_arg (void)
4099 obstack_1grow (&obstack
, 0);
4100 string
= XOBFINISH (&obstack
, const char *);
4101 if (this_is_library_file
)
4102 string
= find_file (string
);
4103 if (this_is_linker_script
)
4105 char * full_script_path
= find_a_file (&startfile_prefixes
, string
, R_OK
, true);
4107 if (full_script_path
== NULL
)
4109 error ("unable to locate default linker script %qs in the library search paths", string
);
4110 /* Script was not found on search path. */
4113 store_arg ("--script", false, false);
4114 string
= full_script_path
;
4116 store_arg (string
, delete_this_arg
, this_is_output_file
);
4117 if (this_is_output_file
)
4118 outfiles
[input_file_number
] = string
;
4124 /* Parse the WRAPPER string which is a comma separated list of the command line
4125 and insert them into the beginning of argbuf. */
4128 insert_wrapper (const char *wrapper
)
4132 char *buf
= xstrdup (wrapper
);
4134 unsigned int old_length
= VEC_length (const_char_p
, argbuf
);
4142 while ((p
= strchr (p
, ',')) != NULL
);
4144 VEC_safe_grow (const_char_p
, heap
, argbuf
, old_length
+ n
);
4145 memmove (VEC_address (const_char_p
, argbuf
) + n
,
4146 VEC_address (const_char_p
, argbuf
),
4147 old_length
* sizeof (const_char_p
));
4158 VEC_replace (const_char_p
, argbuf
, i
, p
);
4161 while ((p
= strchr (p
, ',')) != NULL
);
4162 gcc_assert (i
== n
);
4165 /* Process the spec SPEC and run the commands specified therein.
4166 Returns 0 if the spec is successfully processed; -1 if failed. */
4169 do_spec (const char *spec
)
4173 value
= do_spec_2 (spec
);
4175 /* Force out any unfinished command.
4176 If -pipe, this forces out the last command if it ended in `|'. */
4179 if (VEC_length (const_char_p
, argbuf
) > 0
4180 && !strcmp (VEC_last (const_char_p
, argbuf
), "|"))
4181 VEC_pop (const_char_p
, argbuf
);
4183 set_collect_gcc_options ();
4185 if (VEC_length (const_char_p
, argbuf
) > 0)
4193 do_spec_2 (const char *spec
)
4199 delete_this_arg
= 0;
4200 this_is_output_file
= 0;
4201 this_is_library_file
= 0;
4202 this_is_linker_script
= 0;
4203 input_from_pipe
= 0;
4204 suffix_subst
= NULL
;
4206 result
= do_spec_1 (spec
, 0, NULL
);
4214 /* Process the given spec string and add any new options to the end
4215 of the switches/n_switches array. */
4218 do_option_spec (const char *name
, const char *spec
)
4220 unsigned int i
, value_count
, value_len
;
4221 const char *p
, *q
, *value
;
4222 char *tmp_spec
, *tmp_spec_p
;
4224 if (configure_default_options
[0].name
== NULL
)
4227 for (i
= 0; i
< ARRAY_SIZE (configure_default_options
); i
++)
4228 if (strcmp (configure_default_options
[i
].name
, name
) == 0)
4230 if (i
== ARRAY_SIZE (configure_default_options
))
4233 value
= configure_default_options
[i
].value
;
4234 value_len
= strlen (value
);
4236 /* Compute the size of the final spec. */
4239 while ((p
= strstr (p
, "%(VALUE)")) != NULL
)
4245 /* Replace each %(VALUE) by the specified value. */
4246 tmp_spec
= (char *) alloca (strlen (spec
) + 1
4247 + value_count
* (value_len
- strlen ("%(VALUE)")));
4248 tmp_spec_p
= tmp_spec
;
4250 while ((p
= strstr (q
, "%(VALUE)")) != NULL
)
4252 memcpy (tmp_spec_p
, q
, p
- q
);
4253 tmp_spec_p
= tmp_spec_p
+ (p
- q
);
4254 memcpy (tmp_spec_p
, value
, value_len
);
4255 tmp_spec_p
+= value_len
;
4256 q
= p
+ strlen ("%(VALUE)");
4258 strcpy (tmp_spec_p
, q
);
4260 do_self_spec (tmp_spec
);
4263 /* Process the given spec string and add any new options to the end
4264 of the switches/n_switches array. */
4267 do_self_spec (const char *spec
)
4272 do_spec_1 (" ", 0, NULL
);
4274 /* Mark %<S switches processed by do_self_spec to be ignored permanently.
4275 do_self_specs adds the replacements to switches array, so it shouldn't
4276 be processed afterwards. */
4277 for (i
= 0; i
< n_switches
; i
++)
4278 if ((switches
[i
].live_cond
& SWITCH_IGNORE
))
4279 switches
[i
].live_cond
|= SWITCH_IGNORE_PERMANENTLY
;
4281 if (VEC_length (const_char_p
, argbuf
) > 0)
4283 const char **argbuf_copy
;
4284 struct cl_decoded_option
*decoded_options
;
4285 struct cl_option_handlers handlers
;
4286 unsigned int decoded_options_count
;
4289 /* Create a copy of argbuf with a dummy argv[0] entry for
4290 decode_cmdline_options_to_array. */
4291 argbuf_copy
= XNEWVEC (const char *,
4292 VEC_length (const_char_p
, argbuf
) + 1);
4293 argbuf_copy
[0] = "";
4294 memcpy (argbuf_copy
+ 1, VEC_address (const_char_p
, argbuf
),
4295 VEC_length (const_char_p
, argbuf
) * sizeof (const char *));
4297 decode_cmdline_options_to_array (VEC_length (const_char_p
, argbuf
) + 1,
4299 CL_DRIVER
, &decoded_options
,
4300 &decoded_options_count
);
4302 set_option_handlers (&handlers
);
4304 for (j
= 1; j
< decoded_options_count
; j
++)
4306 switch (decoded_options
[j
].opt_index
)
4308 case OPT_SPECIAL_input_file
:
4309 /* Specs should only generate options, not input
4311 if (strcmp (decoded_options
[j
].arg
, "-") != 0)
4312 fatal_error ("switch %qs does not start with %<-%>",
4313 decoded_options
[j
].arg
);
4315 fatal_error ("spec-generated switch is just %<-%>");
4318 case OPT_fcompare_debug_second
:
4319 case OPT_fcompare_debug
:
4320 case OPT_fcompare_debug_
:
4322 /* Avoid duplicate processing of some options from
4323 compare-debug specs; just save them here. */
4324 save_switch (decoded_options
[j
].canonical_option
[0],
4325 (decoded_options
[j
].canonical_option_num_elements
4327 &decoded_options
[j
].canonical_option
[1], false);
4331 read_cmdline_option (&global_options
, &global_options_set
,
4332 decoded_options
+ j
, UNKNOWN_LOCATION
,
4333 CL_DRIVER
, &handlers
, global_dc
);
4339 switches
[n_switches
].part1
= 0;
4343 /* Callback for processing %D and %I specs. */
4345 struct spec_path_info
{
4350 bool separate_options
;
4354 spec_path (char *path
, void *data
)
4356 struct spec_path_info
*info
= (struct spec_path_info
*) data
;
4360 if (info
->omit_relative
&& !IS_ABSOLUTE_PATH (path
))
4363 if (info
->append_len
!= 0)
4365 len
= strlen (path
);
4366 memcpy (path
+ len
, info
->append
, info
->append_len
+ 1);
4369 if (!is_directory (path
, true))
4372 do_spec_1 (info
->option
, 1, NULL
);
4373 if (info
->separate_options
)
4374 do_spec_1 (" ", 0, NULL
);
4376 if (info
->append_len
== 0)
4378 len
= strlen (path
);
4379 save
= path
[len
- 1];
4380 if (IS_DIR_SEPARATOR (path
[len
- 1]))
4381 path
[len
- 1] = '\0';
4384 do_spec_1 (path
, 1, NULL
);
4385 do_spec_1 (" ", 0, NULL
);
4387 /* Must not damage the original path. */
4388 if (info
->append_len
== 0)
4389 path
[len
- 1] = save
;
4394 /* Create a temporary FILE with the contents of ARGV. Add @FILE to the
4398 create_at_file (char **argv
)
4400 char *temp_file
= make_temp_file ("");
4401 char *at_argument
= concat ("@", temp_file
, NULL
);
4402 FILE *f
= fopen (temp_file
, "w");
4406 fatal_error ("could not open temporary response file %s",
4409 status
= writeargv (argv
, f
);
4412 fatal_error ("could not write to temporary response file %s",
4415 status
= fclose (f
);
4418 fatal_error ("could not close temporary response file %s",
4421 store_arg (at_argument
, 0, 0);
4423 record_temp_file (temp_file
, !save_temps_flag
, !save_temps_flag
);
4426 /* True if we should compile INFILE. */
4429 compile_input_file_p (struct infile
*infile
)
4431 if ((!infile
->language
) || (infile
->language
[0] != '*'))
4432 if (infile
->incompiler
== input_file_compiler
)
4437 /* Process each member of VEC as a spec. */
4440 do_specs_vec (VEC(char_p
,heap
) *vec
)
4445 FOR_EACH_VEC_ELT (char_p
, vec
, ix
, opt
)
4447 do_spec_1 (opt
, 1, NULL
);
4448 /* Make each accumulated option a separate argument. */
4449 do_spec_1 (" ", 0, NULL
);
4453 /* Process the sub-spec SPEC as a portion of a larger spec.
4454 This is like processing a whole spec except that we do
4455 not initialize at the beginning and we do not supply a
4456 newline by default at the end.
4457 INSWITCH nonzero means don't process %-sequences in SPEC;
4458 in this case, % is treated as an ordinary character.
4459 This is used while substituting switches.
4460 INSWITCH nonzero also causes SPC not to terminate an argument.
4462 Value is zero unless a line was finished
4463 and the command on that line reported an error. */
4466 do_spec_1 (const char *spec
, int inswitch
, const char *soft_matched_part
)
4468 const char *p
= spec
;
4473 /* If it's an empty string argument to a switch, keep it as is. */
4474 if (inswitch
&& !*p
)
4478 /* If substituting a switch, treat all chars like letters.
4479 Otherwise, NL, SPC, TAB and % are special. */
4480 switch (inswitch
? 'a' : c
)
4485 if (VEC_length (const_char_p
, argbuf
) > 0
4486 && !strcmp (VEC_last (const_char_p
, argbuf
), "|"))
4488 /* A `|' before the newline means use a pipe here,
4489 but only if -pipe was specified.
4490 Otherwise, execute now and don't pass the `|' as an arg. */
4493 input_from_pipe
= 1;
4497 VEC_pop (const_char_p
, argbuf
);
4500 set_collect_gcc_options ();
4502 if (VEC_length (const_char_p
, argbuf
) > 0)
4508 /* Reinitialize for a new command, and for a new argument. */
4511 delete_this_arg
= 0;
4512 this_is_output_file
= 0;
4513 this_is_library_file
= 0;
4514 this_is_linker_script
= 0;
4515 input_from_pipe
= 0;
4522 obstack_1grow (&obstack
, c
);
4530 /* Reinitialize for a new argument. */
4531 delete_this_arg
= 0;
4532 this_is_output_file
= 0;
4533 this_is_library_file
= 0;
4534 this_is_linker_script
= 0;
4541 fatal_error ("spec %qs invalid", spec
);
4544 if (save_temps_length
)
4545 obstack_grow (&obstack
, save_temps_prefix
, save_temps_length
);
4547 obstack_grow (&obstack
, input_basename
, basename_length
);
4548 if (compare_debug
< 0)
4549 obstack_grow (&obstack
, ".gk", 3);
4554 if (save_temps_length
)
4555 obstack_grow (&obstack
, save_temps_prefix
, save_temps_length
);
4557 obstack_grow (&obstack
, input_basename
, suffixed_basename_length
);
4558 if (compare_debug
< 0)
4559 obstack_grow (&obstack
, ".gk", 3);
4564 delete_this_arg
= 2;
4567 /* Dump out the directories specified with LIBRARY_PATH,
4568 followed by the absolute directories
4569 that we search for startfiles. */
4572 struct spec_path_info info
;
4575 info
.append_len
= 0;
4576 #ifdef RELATIVE_PREFIX_NOT_LINKDIR
4577 /* Used on systems which record the specified -L dirs
4578 and use them to search for dynamic linking.
4579 Relative directories always come from -B,
4580 and it is better not to use them for searching
4581 at run time. In particular, stage1 loses. */
4582 info
.omit_relative
= true;
4584 info
.omit_relative
= false;
4586 info
.separate_options
= false;
4588 for_each_path (&startfile_prefixes
, true, 0, spec_path
, &info
);
4593 /* %efoo means report an error with `foo' as error message
4594 and don't execute any more commands for this file. */
4598 while (*p
!= 0 && *p
!= '\n')
4600 buf
= (char *) alloca (p
- q
+ 1);
4601 strncpy (buf
, q
, p
- q
);
4603 error ("%s", _(buf
));
4608 /* %nfoo means report a notice with `foo' on stderr. */
4612 while (*p
!= 0 && *p
!= '\n')
4614 buf
= (char *) alloca (p
- q
+ 1);
4615 strncpy (buf
, q
, p
- q
);
4617 inform (0, "%s", _(buf
));
4627 /* If save_temps_flag is off, and the HOST_BIT_BUCKET is
4628 defined, and it is not a directory, and it is
4629 writable, use it. Otherwise, treat this like any
4630 other temporary file. */
4632 if ((!save_temps_flag
)
4633 && (stat (HOST_BIT_BUCKET
, &st
) == 0) && (!S_ISDIR (st
.st_mode
))
4634 && (access (HOST_BIT_BUCKET
, W_OK
) == 0))
4636 obstack_grow (&obstack
, HOST_BIT_BUCKET
,
4637 strlen (HOST_BIT_BUCKET
));
4638 delete_this_arg
= 0;
4643 goto create_temp_file
;
4647 obstack_1grow (&obstack
, '-');
4648 delete_this_arg
= 0;
4651 /* consume suffix */
4652 while (*p
== '.' || ISALNUM ((unsigned char) *p
))
4654 if (p
[0] == '%' && p
[1] == 'O')
4659 goto create_temp_file
;
4663 /* consume suffix */
4664 while (*p
== '.' || ISALNUM ((unsigned char) *p
))
4666 if (p
[0] == '%' && p
[1] == 'O')
4671 goto create_temp_file
;
4677 struct temp_name
*t
;
4679 const char *suffix
= p
;
4680 char *saved_suffix
= NULL
;
4682 while (*p
== '.' || ISALNUM ((unsigned char) *p
))
4684 suffix_length
= p
- suffix
;
4685 if (p
[0] == '%' && p
[1] == 'O')
4688 /* We don't support extra suffix characters after %O. */
4689 if (*p
== '.' || ISALNUM ((unsigned char) *p
))
4690 fatal_error ("spec %qs has invalid %<%%0%c%>", spec
, *p
);
4691 if (suffix_length
== 0)
4692 suffix
= TARGET_OBJECT_SUFFIX
;
4696 = XNEWVEC (char, suffix_length
4697 + strlen (TARGET_OBJECT_SUFFIX
));
4698 strncpy (saved_suffix
, suffix
, suffix_length
);
4699 strcpy (saved_suffix
+ suffix_length
,
4700 TARGET_OBJECT_SUFFIX
);
4702 suffix_length
+= strlen (TARGET_OBJECT_SUFFIX
);
4705 if (compare_debug
< 0)
4707 suffix
= concat (".gk", suffix
, NULL
);
4711 /* If -save-temps=obj and -o were specified, use that for the
4713 if (save_temps_length
)
4716 temp_filename_length
4717 = save_temps_length
+ suffix_length
+ 1;
4718 tmp
= (char *) alloca (temp_filename_length
);
4719 memcpy (tmp
, save_temps_prefix
, save_temps_length
);
4720 memcpy (tmp
+ save_temps_length
, suffix
, suffix_length
);
4721 tmp
[save_temps_length
+ suffix_length
] = '\0';
4722 temp_filename
= save_string (tmp
,
4723 temp_filename_length
+ 1);
4724 obstack_grow (&obstack
, temp_filename
,
4725 temp_filename_length
);
4727 delete_this_arg
= 0;
4731 /* If the gcc_input_filename has the same suffix specified
4732 for the %g, %u, or %U, and -save-temps is specified,
4733 we could end up using that file as an intermediate
4734 thus clobbering the user's source file (.e.g.,
4735 gcc -save-temps foo.s would clobber foo.s with the
4736 output of cpp0). So check for this condition and
4737 generate a temp file as the intermediate. */
4739 if (save_temps_flag
)
4742 temp_filename_length
= basename_length
+ suffix_length
+ 1;
4743 tmp
= (char *) alloca (temp_filename_length
);
4744 memcpy (tmp
, input_basename
, basename_length
);
4745 memcpy (tmp
+ basename_length
, suffix
, suffix_length
);
4746 tmp
[basename_length
+ suffix_length
] = '\0';
4747 temp_filename
= tmp
;
4749 if (filename_cmp (temp_filename
, gcc_input_filename
) != 0)
4751 #ifndef HOST_LACKS_INODE_NUMBERS
4752 struct stat st_temp
;
4754 /* Note, set_input() resets input_stat_set to 0. */
4755 if (input_stat_set
== 0)
4757 input_stat_set
= stat (gcc_input_filename
,
4759 if (input_stat_set
>= 0)
4763 /* If we have the stat for the gcc_input_filename
4764 and we can do the stat for the temp_filename
4765 then the they could still refer to the same
4766 file if st_dev/st_ino's are the same. */
4767 if (input_stat_set
!= 1
4768 || stat (temp_filename
, &st_temp
) < 0
4769 || input_stat
.st_dev
!= st_temp
.st_dev
4770 || input_stat
.st_ino
!= st_temp
.st_ino
)
4772 /* Just compare canonical pathnames. */
4773 char* input_realname
= lrealpath (gcc_input_filename
);
4774 char* temp_realname
= lrealpath (temp_filename
);
4775 bool files_differ
= filename_cmp (input_realname
, temp_realname
);
4776 free (input_realname
);
4777 free (temp_realname
);
4781 temp_filename
= save_string (temp_filename
,
4782 temp_filename_length
+ 1);
4783 obstack_grow (&obstack
, temp_filename
,
4784 temp_filename_length
);
4786 delete_this_arg
= 0;
4792 /* See if we already have an association of %g/%u/%U and
4794 for (t
= temp_names
; t
; t
= t
->next
)
4795 if (t
->length
== suffix_length
4796 && strncmp (t
->suffix
, suffix
, suffix_length
) == 0
4797 && t
->unique
== (c
== 'u' || c
== 'U' || c
== 'j'))
4800 /* Make a new association if needed. %u and %j
4802 if (t
== 0 || c
== 'u' || c
== 'j')
4806 t
= XNEW (struct temp_name
);
4807 t
->next
= temp_names
;
4810 t
->length
= suffix_length
;
4813 t
->suffix
= saved_suffix
;
4814 saved_suffix
= NULL
;
4817 t
->suffix
= save_string (suffix
, suffix_length
);
4818 t
->unique
= (c
== 'u' || c
== 'U' || c
== 'j');
4819 temp_filename
= make_temp_file (t
->suffix
);
4820 temp_filename_length
= strlen (temp_filename
);
4821 t
->filename
= temp_filename
;
4822 t
->filename_length
= temp_filename_length
;
4825 free (saved_suffix
);
4827 obstack_grow (&obstack
, t
->filename
, t
->filename_length
);
4828 delete_this_arg
= 1;
4836 if (at_file_supplied
)
4838 /* We are going to expand `%i' to `@FILE', where FILE
4839 is a newly-created temporary filename. The filenames
4840 that would usually be expanded in place of %o will be
4841 written to the temporary file. */
4846 for (i
= 0; i
< n_infiles
; i
++)
4847 if (compile_input_file_p (&infiles
[i
]))
4850 argv
= (char **) alloca (sizeof (char *) * (n_files
+ 1));
4852 /* Copy the strings over. */
4853 for (i
= 0, j
= 0; i
< n_infiles
; i
++)
4854 if (compile_input_file_p (&infiles
[i
]))
4856 argv
[j
] = CONST_CAST (char *, infiles
[i
].name
);
4857 infiles
[i
].compiled
= true;
4862 create_at_file (argv
);
4865 for (i
= 0; (int) i
< n_infiles
; i
++)
4866 if (compile_input_file_p (&infiles
[i
]))
4868 store_arg (infiles
[i
].name
, 0, 0);
4869 infiles
[i
].compiled
= true;
4874 obstack_grow (&obstack
, gcc_input_filename
,
4875 input_filename_length
);
4882 struct spec_path_info info
;
4886 do_spec_1 ("-imultilib", 1, NULL
);
4887 /* Make this a separate argument. */
4888 do_spec_1 (" ", 0, NULL
);
4889 do_spec_1 (multilib_dir
, 1, NULL
);
4890 do_spec_1 (" ", 0, NULL
);
4893 if (gcc_exec_prefix
)
4895 do_spec_1 ("-iprefix", 1, NULL
);
4896 /* Make this a separate argument. */
4897 do_spec_1 (" ", 0, NULL
);
4898 do_spec_1 (gcc_exec_prefix
, 1, NULL
);
4899 do_spec_1 (" ", 0, NULL
);
4902 if (target_system_root_changed
||
4903 (target_system_root
&& target_sysroot_hdrs_suffix
))
4905 do_spec_1 ("-isysroot", 1, NULL
);
4906 /* Make this a separate argument. */
4907 do_spec_1 (" ", 0, NULL
);
4908 do_spec_1 (target_system_root
, 1, NULL
);
4909 if (target_sysroot_hdrs_suffix
)
4910 do_spec_1 (target_sysroot_hdrs_suffix
, 1, NULL
);
4911 do_spec_1 (" ", 0, NULL
);
4914 info
.option
= "-isystem";
4915 info
.append
= "include";
4916 info
.append_len
= strlen (info
.append
);
4917 info
.omit_relative
= false;
4918 info
.separate_options
= true;
4920 for_each_path (&include_prefixes
, false, info
.append_len
,
4923 info
.append
= "include-fixed";
4924 if (*sysroot_hdrs_suffix_spec
)
4925 info
.append
= concat (info
.append
, dir_separator_str
,
4926 multilib_dir
, NULL
);
4927 info
.append_len
= strlen (info
.append
);
4928 for_each_path (&include_prefixes
, false, info
.append_len
,
4935 int max
= n_infiles
;
4936 max
+= lang_specific_extra_outfiles
;
4938 if (HAVE_GNU_LD
&& at_file_supplied
)
4940 /* We are going to expand `%o' to `@FILE', where FILE
4941 is a newly-created temporary filename. The filenames
4942 that would usually be expanded in place of %o will be
4943 written to the temporary file. */
4948 /* Convert OUTFILES into a form suitable for writeargv. */
4950 /* Determine how many are non-NULL. */
4951 for (n_files
= 0, i
= 0; i
< max
; i
++)
4952 n_files
+= outfiles
[i
] != NULL
;
4954 argv
= (char **) alloca (sizeof (char *) * (n_files
+ 1));
4956 /* Copy the strings over. */
4957 for (i
= 0, j
= 0; i
< max
; i
++)
4960 argv
[j
] = CONST_CAST (char *, outfiles
[i
]);
4965 create_at_file (argv
);
4968 for (i
= 0; i
< max
; i
++)
4970 store_arg (outfiles
[i
], 0, 0);
4975 obstack_grow (&obstack
, TARGET_OBJECT_SUFFIX
, strlen (TARGET_OBJECT_SUFFIX
));
4980 this_is_library_file
= 1;
4984 this_is_linker_script
= 1;
4988 outfiles
[input_file_number
] = NULL
;
4992 this_is_output_file
= 1;
4997 unsigned int cur_index
= VEC_length (const_char_p
, argbuf
);
4998 /* Handle the {...} following the %W. */
5000 fatal_error ("spec %qs has invalid %<%%W%c%>", spec
, *p
);
5001 p
= handle_braces (p
+ 1);
5005 /* If any args were output, mark the last one for deletion
5007 if (VEC_length (const_char_p
, argbuf
) != cur_index
)
5008 record_temp_file (VEC_last (const_char_p
, argbuf
), 0, 1);
5012 /* %x{OPTION} records OPTION for %X to output. */
5020 /* Skip past the option value and make a copy. */
5022 fatal_error ("spec %qs has invalid %<%%x%c%>", spec
, *p
);
5025 string
= save_string (p1
+ 1, p
- p1
- 2);
5027 /* See if we already recorded this option. */
5028 FOR_EACH_VEC_ELT (char_p
, linker_options
, ix
, opt
)
5029 if (! strcmp (string
, opt
))
5035 /* This option is new; add it. */
5036 add_linker_option (string
, strlen (string
));
5040 /* Dump out the options accumulated previously using %x. */
5042 do_specs_vec (linker_options
);
5045 /* Dump out the options accumulated previously using -Wa,. */
5047 do_specs_vec (assembler_options
);
5050 /* Dump out the options accumulated previously using -Wp,. */
5052 do_specs_vec (preprocessor_options
);
5055 /* Here are digits and numbers that just process
5056 a certain constant string as a spec. */
5059 value
= do_spec_1 (cc1_spec
, 0, NULL
);
5065 value
= do_spec_1 (cc1plus_spec
, 0, NULL
);
5071 value
= do_spec_1 (asm_spec
, 0, NULL
);
5077 value
= do_spec_1 (asm_final_spec
, 0, NULL
);
5084 const char *const spec
5085 = (input_file_compiler
->cpp_spec
5086 ? input_file_compiler
->cpp_spec
5088 value
= do_spec_1 (spec
, 0, NULL
);
5095 value
= do_spec_1 (endfile_spec
, 0, NULL
);
5101 value
= do_spec_1 (link_spec
, 0, NULL
);
5107 value
= do_spec_1 (lib_spec
, 0, NULL
);
5113 value
= do_spec_1 (libgcc_spec
, 0, NULL
);
5119 /* We assume there is a directory
5120 separator at the end of this string. */
5121 if (target_system_root
)
5123 obstack_grow (&obstack
, target_system_root
,
5124 strlen (target_system_root
));
5125 if (target_sysroot_suffix
)
5126 obstack_grow (&obstack
, target_sysroot_suffix
,
5127 strlen (target_sysroot_suffix
));
5132 value
= do_spec_1 (startfile_spec
, 0, NULL
);
5137 /* Here we define characters other than letters and digits. */
5140 p
= handle_braces (p
);
5146 p
= handle_spec_function (p
);
5152 obstack_1grow (&obstack
, '%');
5159 while (p
[len
] && p
[len
] != ' ' && p
[len
] != '%')
5161 suffix_subst
= save_string (p
- 1, len
+ 1);
5166 /* Henceforth ignore the option(s) matching the pattern
5172 int have_wildcard
= 0;
5177 switch_option
= SWITCH_IGNORE
| SWITCH_KEEP_FOR_GCC
;
5179 switch_option
= SWITCH_IGNORE
;
5181 while (p
[len
] && p
[len
] != ' ' && p
[len
] != '\t')
5184 if (p
[len
-1] == '*')
5187 for (i
= 0; i
< n_switches
; i
++)
5188 if (!strncmp (switches
[i
].part1
, p
, len
- have_wildcard
)
5189 && (have_wildcard
|| switches
[i
].part1
[len
] == '\0'))
5191 switches
[i
].live_cond
|= switch_option
;
5192 switches
[i
].validated
= 1;
5200 if (soft_matched_part
)
5202 if (soft_matched_part
[0])
5203 do_spec_1 (soft_matched_part
, 1, NULL
);
5204 do_spec_1 (" ", 0, NULL
);
5207 /* Catch the case where a spec string contains something like
5208 '%{foo:%*}'. i.e. there is no * in the pattern on the left
5209 hand side of the :. */
5210 error ("spec failure: %<%%*%> has not been initialized by pattern match");
5213 /* Process a string found as the value of a spec given by name.
5214 This feature allows individual machine descriptions
5215 to add and use their own specs. */
5218 const char *name
= p
;
5219 struct spec_list
*sl
;
5222 /* The string after the S/P is the name of a spec that is to be
5224 while (*p
&& *p
!= ')')
5227 /* See if it's in the list. */
5228 for (len
= p
- name
, sl
= specs
; sl
; sl
= sl
->next
)
5229 if (sl
->name_len
== len
&& !strncmp (sl
->name
, name
, len
))
5231 name
= *(sl
->ptr_spec
);
5233 fnotice (stderr
, "Processing spec (%s), which is '%s'\n",
5241 value
= do_spec_1 (name
, 0, NULL
);
5246 /* Discard the closing paren. */
5253 error ("spec failure: unrecognized spec option %qc", c
);
5259 /* Backslash: treat next character as ordinary. */
5264 /* Ordinary character: put it into the current argument. */
5265 obstack_1grow (&obstack
, c
);
5269 /* End of string. If we are processing a spec function, we need to
5270 end any pending argument. */
5271 if (processing_spec_function
)
5277 /* Look up a spec function. */
5279 static const struct spec_function
*
5280 lookup_spec_function (const char *name
)
5282 const struct spec_function
*sf
;
5284 for (sf
= static_spec_functions
; sf
->name
!= NULL
; sf
++)
5285 if (strcmp (sf
->name
, name
) == 0)
5291 /* Evaluate a spec function. */
5294 eval_spec_function (const char *func
, const char *args
)
5296 const struct spec_function
*sf
;
5297 const char *funcval
;
5299 /* Saved spec processing context. */
5300 VEC(const_char_p
,heap
) *save_argbuf
;
5303 int save_delete_this_arg
;
5304 int save_this_is_output_file
;
5305 int save_this_is_library_file
;
5306 int save_input_from_pipe
;
5307 int save_this_is_linker_script
;
5308 const char *save_suffix_subst
;
5311 sf
= lookup_spec_function (func
);
5313 fatal_error ("unknown spec function %qs", func
);
5315 /* Push the spec processing context. */
5316 save_argbuf
= argbuf
;
5318 save_arg_going
= arg_going
;
5319 save_delete_this_arg
= delete_this_arg
;
5320 save_this_is_output_file
= this_is_output_file
;
5321 save_this_is_library_file
= this_is_library_file
;
5322 save_this_is_linker_script
= this_is_linker_script
;
5323 save_input_from_pipe
= input_from_pipe
;
5324 save_suffix_subst
= suffix_subst
;
5326 /* Create a new spec processing context, and build the function
5330 if (do_spec_2 (args
) < 0)
5331 fatal_error ("error in args to spec function %qs", func
);
5333 /* argbuf_index is an index for the next argument to be inserted, and
5334 so contains the count of the args already inserted. */
5336 funcval
= (*sf
->func
) (VEC_length (const_char_p
, argbuf
),
5337 VEC_address (const_char_p
, argbuf
));
5339 /* Pop the spec processing context. */
5340 VEC_free (const_char_p
, heap
, argbuf
);
5341 argbuf
= save_argbuf
;
5343 arg_going
= save_arg_going
;
5344 delete_this_arg
= save_delete_this_arg
;
5345 this_is_output_file
= save_this_is_output_file
;
5346 this_is_library_file
= save_this_is_library_file
;
5347 this_is_linker_script
= save_this_is_linker_script
;
5348 input_from_pipe
= save_input_from_pipe
;
5349 suffix_subst
= save_suffix_subst
;
5354 /* Handle a spec function call of the form:
5358 ARGS is processed as a spec in a separate context and split into an
5359 argument vector in the normal fashion. The function returns a string
5360 containing a spec which we then process in the caller's context, or
5361 NULL if no processing is required. */
5364 handle_spec_function (const char *p
)
5367 const char *endp
, *funcval
;
5370 processing_spec_function
++;
5372 /* Get the function name. */
5373 for (endp
= p
; *endp
!= '\0'; endp
++)
5375 if (*endp
== '(') /* ) */
5377 /* Only allow [A-Za-z0-9], -, and _ in function names. */
5378 if (!ISALNUM (*endp
) && !(*endp
== '-' || *endp
== '_'))
5379 fatal_error ("malformed spec function name");
5381 if (*endp
!= '(') /* ) */
5382 fatal_error ("no arguments for spec function");
5383 func
= save_string (p
, endp
- p
);
5386 /* Get the arguments. */
5387 for (count
= 0; *endp
!= '\0'; endp
++)
5396 else if (*endp
== '(') /* ) */
5401 fatal_error ("malformed spec function arguments");
5402 args
= save_string (p
, endp
- p
);
5405 /* p now points to just past the end of the spec function expression. */
5407 funcval
= eval_spec_function (func
, args
);
5408 if (funcval
!= NULL
&& do_spec_1 (funcval
, 0, NULL
) < 0)
5414 processing_spec_function
--;
5419 /* Inline subroutine of handle_braces. Returns true if the current
5420 input suffix matches the atom bracketed by ATOM and END_ATOM. */
5422 input_suffix_matches (const char *atom
, const char *end_atom
)
5424 return (input_suffix
5425 && !strncmp (input_suffix
, atom
, end_atom
- atom
)
5426 && input_suffix
[end_atom
- atom
] == '\0');
5429 /* Subroutine of handle_braces. Returns true if the current
5430 input file's spec name matches the atom bracketed by ATOM and END_ATOM. */
5432 input_spec_matches (const char *atom
, const char *end_atom
)
5434 return (input_file_compiler
5435 && input_file_compiler
->suffix
5436 && input_file_compiler
->suffix
[0] != '\0'
5437 && !strncmp (input_file_compiler
->suffix
+ 1, atom
,
5439 && input_file_compiler
->suffix
[end_atom
- atom
+ 1] == '\0');
5442 /* Subroutine of handle_braces. Returns true if a switch
5443 matching the atom bracketed by ATOM and END_ATOM appeared on the
5446 switch_matches (const char *atom
, const char *end_atom
, int starred
)
5449 int len
= end_atom
- atom
;
5450 int plen
= starred
? len
: -1;
5452 for (i
= 0; i
< n_switches
; i
++)
5453 if (!strncmp (switches
[i
].part1
, atom
, len
)
5454 && (starred
|| switches
[i
].part1
[len
] == '\0')
5455 && check_live_switch (i
, plen
))
5461 /* Inline subroutine of handle_braces. Mark all of the switches which
5462 match ATOM (extends to END_ATOM; STARRED indicates whether there
5463 was a star after the atom) for later processing. */
5465 mark_matching_switches (const char *atom
, const char *end_atom
, int starred
)
5468 int len
= end_atom
- atom
;
5469 int plen
= starred
? len
: -1;
5471 for (i
= 0; i
< n_switches
; i
++)
5472 if (!strncmp (switches
[i
].part1
, atom
, len
)
5473 && (starred
|| switches
[i
].part1
[len
] == '\0')
5474 && check_live_switch (i
, plen
))
5475 switches
[i
].ordering
= 1;
5478 /* Inline subroutine of handle_braces. Process all the currently
5479 marked switches through give_switch, and clear the marks. */
5481 process_marked_switches (void)
5485 for (i
= 0; i
< n_switches
; i
++)
5486 if (switches
[i
].ordering
== 1)
5488 switches
[i
].ordering
= 0;
5493 /* Handle a %{ ... } construct. P points just inside the leading {.
5494 Returns a pointer one past the end of the brace block, or 0
5495 if we call do_spec_1 and that returns -1. */
5498 handle_braces (const char *p
)
5500 const char *atom
, *end_atom
;
5501 const char *d_atom
= NULL
, *d_end_atom
= NULL
;
5502 const char *orig
= p
;
5510 bool a_must_be_last
= false;
5511 bool ordered_set
= false;
5512 bool disjunct_set
= false;
5513 bool disj_matched
= false;
5514 bool disj_starred
= true;
5515 bool n_way_choice
= false;
5516 bool n_way_matched
= false;
5518 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
5525 /* Scan one "atom" (S in the description above of %{}, possibly
5526 with '!', '.', '@', ',', or '*' modifiers). */
5528 a_is_suffix
= false;
5529 a_is_starred
= false;
5530 a_is_negated
= false;
5531 a_is_spectype
= false;
5535 p
++, a_is_negated
= true;
5539 p
++, a_is_suffix
= true;
5541 p
++, a_is_spectype
= true;
5544 while (ISIDNUM(*p
) || *p
== '-' || *p
== '+' || *p
== '='
5545 || *p
== ',' || *p
== '.' || *p
== '@')
5550 p
++, a_is_starred
= 1;
5556 /* Substitute the switch(es) indicated by the current atom. */
5558 if (disjunct_set
|| n_way_choice
|| a_is_negated
|| a_is_suffix
5559 || a_is_spectype
|| atom
== end_atom
)
5562 mark_matching_switches (atom
, end_atom
, a_is_starred
);
5565 process_marked_switches ();
5569 /* Substitute some text if the current atom appears as a switch
5571 disjunct_set
= true;
5575 if (atom
== end_atom
)
5577 if (!n_way_choice
|| disj_matched
|| *p
== '|'
5578 || a_is_negated
|| a_is_suffix
|| a_is_spectype
5582 /* An empty term may appear as the last choice of an
5583 N-way choice set; it means "otherwise". */
5584 a_must_be_last
= true;
5585 disj_matched
= !n_way_matched
;
5586 disj_starred
= false;
5590 if ((a_is_suffix
|| a_is_spectype
) && a_is_starred
)
5594 disj_starred
= false;
5596 /* Don't bother testing this atom if we already have a
5598 if (!disj_matched
&& !n_way_matched
)
5601 a_matched
= input_suffix_matches (atom
, end_atom
);
5602 else if (a_is_spectype
)
5603 a_matched
= input_spec_matches (atom
, end_atom
);
5605 a_matched
= switch_matches (atom
, end_atom
, a_is_starred
);
5607 if (a_matched
!= a_is_negated
)
5609 disj_matched
= true;
5611 d_end_atom
= end_atom
;
5618 /* Found the body, that is, the text to substitute if the
5619 current disjunction matches. */
5620 p
= process_brace_body (p
+ 1, d_atom
, d_end_atom
, disj_starred
,
5621 disj_matched
&& !n_way_matched
);
5625 /* If we have an N-way choice, reset state for the next
5629 n_way_choice
= true;
5630 n_way_matched
|= disj_matched
;
5631 disj_matched
= false;
5632 disj_starred
= true;
5633 d_atom
= d_end_atom
= NULL
;
5642 while (*p
++ != '}');
5647 fatal_error ("braced spec %qs is invalid at %qc", orig
, *p
);
5652 /* Subroutine of handle_braces. Scan and process a brace substitution body
5653 (X in the description of %{} syntax). P points one past the colon;
5654 ATOM and END_ATOM bracket the first atom which was found to be true
5655 (present) in the current disjunction; STARRED indicates whether all
5656 the atoms in the current disjunction were starred (for syntax validation);
5657 MATCHED indicates whether the disjunction matched or not, and therefore
5658 whether or not the body is to be processed through do_spec_1 or just
5659 skipped. Returns a pointer to the closing } or ;, or 0 if do_spec_1
5663 process_brace_body (const char *p
, const char *atom
, const char *end_atom
,
5664 int starred
, int matched
)
5666 const char *body
, *end_body
;
5667 unsigned int nesting_level
;
5668 bool have_subst
= false;
5670 /* Locate the closing } or ;, honoring nested braces.
5671 Trim trailing whitespace. */
5680 if (!--nesting_level
)
5683 else if (*p
== ';' && nesting_level
== 1)
5685 else if (*p
== '%' && p
[1] == '*' && nesting_level
== 1)
5687 else if (*p
== '\0')
5693 while (end_body
[-1] == ' ' || end_body
[-1] == '\t')
5696 if (have_subst
&& !starred
)
5701 /* Copy the substitution body to permanent storage and execute it.
5702 If have_subst is false, this is a simple matter of running the
5703 body through do_spec_1... */
5704 char *string
= save_string (body
, end_body
- body
);
5707 if (do_spec_1 (string
, 0, NULL
) < 0)
5712 /* ... but if have_subst is true, we have to process the
5713 body once for each matching switch, with %* set to the
5714 variant part of the switch. */
5715 unsigned int hard_match_len
= end_atom
- atom
;
5718 for (i
= 0; i
< n_switches
; i
++)
5719 if (!strncmp (switches
[i
].part1
, atom
, hard_match_len
)
5720 && check_live_switch (i
, hard_match_len
))
5722 if (do_spec_1 (string
, 0,
5723 &switches
[i
].part1
[hard_match_len
]) < 0)
5725 /* Pass any arguments this switch has. */
5727 suffix_subst
= NULL
;
5735 fatal_error ("braced spec body %qs is invalid", body
);
5738 /* Return 0 iff switch number SWITCHNUM is obsoleted by a later switch
5739 on the command line. PREFIX_LENGTH is the length of XXX in an {XXX*}
5740 spec, or -1 if either exact match or %* is used.
5742 A -O switch is obsoleted by a later -O switch. A -f, -m, or -W switch
5743 whose value does not begin with "no-" is obsoleted by the same value
5744 with the "no-", similarly for a switch with the "no-" prefix. */
5747 check_live_switch (int switchnum
, int prefix_length
)
5749 const char *name
= switches
[switchnum
].part1
;
5752 /* If we already processed this switch and determined if it was
5753 live or not, return our past determination. */
5754 if (switches
[switchnum
].live_cond
!= 0)
5755 return ((switches
[switchnum
].live_cond
& SWITCH_LIVE
) != 0
5756 && (switches
[switchnum
].live_cond
& SWITCH_FALSE
) == 0
5757 && (switches
[switchnum
].live_cond
& SWITCH_IGNORE_PERMANENTLY
)
5760 /* In the common case of {<at-most-one-letter>*}, a negating
5761 switch would always match, so ignore that case. We will just
5762 send the conflicting switches to the compiler phase. */
5763 if (prefix_length
>= 0 && prefix_length
<= 1)
5766 /* Now search for duplicate in a manner that depends on the name. */
5770 for (i
= switchnum
+ 1; i
< n_switches
; i
++)
5771 if (switches
[i
].part1
[0] == 'O')
5773 switches
[switchnum
].validated
= 1;
5774 switches
[switchnum
].live_cond
= SWITCH_FALSE
;
5779 case 'W': case 'f': case 'm':
5780 if (! strncmp (name
+ 1, "no-", 3))
5782 /* We have Xno-YYY, search for XYYY. */
5783 for (i
= switchnum
+ 1; i
< n_switches
; i
++)
5784 if (switches
[i
].part1
[0] == name
[0]
5785 && ! strcmp (&switches
[i
].part1
[1], &name
[4]))
5787 switches
[switchnum
].validated
= 1;
5788 switches
[switchnum
].live_cond
= SWITCH_FALSE
;
5794 /* We have XYYY, search for Xno-YYY. */
5795 for (i
= switchnum
+ 1; i
< n_switches
; i
++)
5796 if (switches
[i
].part1
[0] == name
[0]
5797 && switches
[i
].part1
[1] == 'n'
5798 && switches
[i
].part1
[2] == 'o'
5799 && switches
[i
].part1
[3] == '-'
5800 && !strcmp (&switches
[i
].part1
[4], &name
[1]))
5802 switches
[switchnum
].validated
= 1;
5803 switches
[switchnum
].live_cond
= SWITCH_FALSE
;
5810 /* Otherwise the switch is live. */
5811 switches
[switchnum
].live_cond
|= SWITCH_LIVE
;
5815 /* Pass a switch to the current accumulating command
5816 in the same form that we received it.
5817 SWITCHNUM identifies the switch; it is an index into
5818 the vector of switches gcc received, which is `switches'.
5819 This cannot fail since it never finishes a command line.
5821 If OMIT_FIRST_WORD is nonzero, then we omit .part1 of the argument. */
5824 give_switch (int switchnum
, int omit_first_word
)
5826 if ((switches
[switchnum
].live_cond
& SWITCH_IGNORE
) != 0)
5829 if (!omit_first_word
)
5831 do_spec_1 ("-", 0, NULL
);
5832 do_spec_1 (switches
[switchnum
].part1
, 1, NULL
);
5835 if (switches
[switchnum
].args
!= 0)
5838 for (p
= switches
[switchnum
].args
; *p
; p
++)
5840 const char *arg
= *p
;
5842 do_spec_1 (" ", 0, NULL
);
5845 unsigned length
= strlen (arg
);
5848 while (length
-- && !IS_DIR_SEPARATOR (arg
[length
]))
5849 if (arg
[length
] == '.')
5851 (CONST_CAST(char *, arg
))[length
] = 0;
5855 do_spec_1 (arg
, 1, NULL
);
5857 (CONST_CAST(char *, arg
))[length
] = '.';
5858 do_spec_1 (suffix_subst
, 1, NULL
);
5861 do_spec_1 (arg
, 1, NULL
);
5865 do_spec_1 (" ", 0, NULL
);
5866 switches
[switchnum
].validated
= 1;
5869 /* Search for a file named NAME trying various prefixes including the
5870 user's -B prefix and some standard ones.
5871 Return the absolute file name found. If nothing is found, return NAME. */
5874 find_file (const char *name
)
5876 char *newname
= find_a_file (&startfile_prefixes
, name
, R_OK
, true);
5877 return newname
? newname
: name
;
5880 /* Determine whether a directory exists. If LINKER, return 0 for
5881 certain fixed names not needed by the linker. */
5884 is_directory (const char *path1
, bool linker
)
5891 /* Ensure the string ends with "/.". The resulting path will be a
5892 directory even if the given path is a symbolic link. */
5893 len1
= strlen (path1
);
5894 path
= (char *) alloca (3 + len1
);
5895 memcpy (path
, path1
, len1
);
5897 if (!IS_DIR_SEPARATOR (cp
[-1]))
5898 *cp
++ = DIR_SEPARATOR
;
5902 /* Exclude directories that the linker is known to search. */
5904 && IS_DIR_SEPARATOR (path
[0])
5906 && filename_ncmp (path
+ 1, "lib", 3) == 0)
5908 && filename_ncmp (path
+ 1, "usr", 3) == 0
5909 && IS_DIR_SEPARATOR (path
[4])
5910 && filename_ncmp (path
+ 5, "lib", 3) == 0)))
5913 return (stat (path
, &st
) >= 0 && S_ISDIR (st
.st_mode
));
5916 /* Set up the various global variables to indicate that we're processing
5917 the input file named FILENAME. */
5920 set_input (const char *filename
)
5924 gcc_input_filename
= filename
;
5925 input_filename_length
= strlen (gcc_input_filename
);
5926 input_basename
= lbasename (gcc_input_filename
);
5928 /* Find a suffix starting with the last period,
5929 and set basename_length to exclude that suffix. */
5930 basename_length
= strlen (input_basename
);
5931 suffixed_basename_length
= basename_length
;
5932 p
= input_basename
+ basename_length
;
5933 while (p
!= input_basename
&& *p
!= '.')
5935 if (*p
== '.' && p
!= input_basename
)
5937 basename_length
= p
- input_basename
;
5938 input_suffix
= p
+ 1;
5943 /* If a spec for 'g', 'u', or 'U' is seen with -save-temps then
5944 we will need to do a stat on the gcc_input_filename. The
5945 INPUT_STAT_SET signals that the stat is needed. */
5949 /* On fatal signals, delete all the temporary files. */
5952 fatal_signal (int signum
)
5954 signal (signum
, SIG_DFL
);
5955 delete_failure_queue ();
5956 delete_temp_files ();
5957 /* Get the same signal again, this time not handled,
5958 so its normal effect occurs. */
5959 kill (getpid (), signum
);
5962 /* Compare the contents of the two files named CMPFILE[0] and
5963 CMPFILE[1]. Return zero if they're identical, nonzero
5967 compare_files (char *cmpfile
[])
5970 FILE *temp
[2] = { NULL
, NULL
};
5976 void *map
[2] = { NULL
, NULL
};
5978 for (i
= 0; i
< 2; i
++)
5982 if (stat (cmpfile
[i
], &st
) < 0 || !S_ISREG (st
.st_mode
))
5984 error ("%s: could not determine length of compare-debug file %s",
5985 gcc_input_filename
, cmpfile
[i
]);
5990 length
[i
] = st
.st_size
;
5993 if (!ret
&& length
[0] != length
[1])
5995 error ("%s: -fcompare-debug failure (length)", gcc_input_filename
);
6000 for (i
= 0; i
< 2; i
++)
6002 int fd
= open (cmpfile
[i
], O_RDONLY
);
6005 error ("%s: could not open compare-debug file %s",
6006 gcc_input_filename
, cmpfile
[i
]);
6011 map
[i
] = mmap (NULL
, length
[i
], PROT_READ
, MAP_PRIVATE
, fd
, 0);
6014 if (map
[i
] == (void *) MAP_FAILED
)
6023 if (memcmp (map
[0], map
[1], length
[0]) != 0)
6025 error ("%s: -fcompare-debug failure", gcc_input_filename
);
6030 for (i
= 0; i
< 2; i
++)
6032 munmap ((caddr_t
) map
[i
], length
[i
]);
6041 for (i
= 0; i
< 2; i
++)
6043 temp
[i
] = fopen (cmpfile
[i
], "r");
6046 error ("%s: could not open compare-debug file %s",
6047 gcc_input_filename
, cmpfile
[i
]);
6053 if (!ret
&& temp
[0] && temp
[1])
6057 c0
= fgetc (temp
[0]);
6058 c1
= fgetc (temp
[1]);
6062 error ("%s: -fcompare-debug failure",
6063 gcc_input_filename
);
6072 for (i
= 1; i
>= 0; i
--)
6081 extern int main (int, char **);
6084 main (int argc
, char **argv
)
6088 int linker_was_run
= 0;
6089 int lang_n_infiles
= 0;
6090 int num_linker_inputs
= 0;
6091 char *explicit_link_files
;
6093 char *lto_wrapper_file
;
6095 struct user_specs
*uptr
;
6096 char **old_argv
= argv
;
6097 struct cl_decoded_option
*decoded_options
;
6098 unsigned int decoded_options_count
;
6100 /* Initialize here, not in definition. The IRIX 6 O32 cc sometimes chokes
6101 on ?: in file-scope variable initializations. */
6102 asm_debug
= ASM_DEBUG_SPEC
;
6104 p
= argv
[0] + strlen (argv
[0]);
6105 while (p
!= argv
[0] && !IS_DIR_SEPARATOR (p
[-1]))
6109 xmalloc_set_program_name (progname
);
6111 expandargv (&argc
, &argv
);
6113 /* Determine if any expansions were made. */
6114 if (argv
!= old_argv
)
6115 at_file_supplied
= true;
6117 /* Register the language-independent parameters. */
6118 global_init_params ();
6121 init_options_struct (&global_options
, &global_options_set
);
6123 decode_cmdline_options_to_array (argc
, CONST_CAST2 (const char **, char **,
6126 &decoded_options
, &decoded_options_count
);
6128 #ifdef GCC_DRIVER_HOST_INITIALIZATION
6129 /* Perform host dependent initialization when needed. */
6130 GCC_DRIVER_HOST_INITIALIZATION
;
6133 /* Unlock the stdio streams. */
6134 unlock_std_streams ();
6136 gcc_init_libintl ();
6138 diagnostic_initialize (global_dc
, 0);
6139 if (atexit (delete_temp_files
) != 0)
6140 fatal_error ("atexit failed");
6142 if (signal (SIGINT
, SIG_IGN
) != SIG_IGN
)
6143 signal (SIGINT
, fatal_signal
);
6145 if (signal (SIGHUP
, SIG_IGN
) != SIG_IGN
)
6146 signal (SIGHUP
, fatal_signal
);
6148 if (signal (SIGTERM
, SIG_IGN
) != SIG_IGN
)
6149 signal (SIGTERM
, fatal_signal
);
6151 if (signal (SIGPIPE
, SIG_IGN
) != SIG_IGN
)
6152 signal (SIGPIPE
, fatal_signal
);
6155 /* We *MUST* set SIGCHLD to SIG_DFL so that the wait4() call will
6156 receive the signal. A different setting is inheritable */
6157 signal (SIGCHLD
, SIG_DFL
);
6160 /* Parsing and gimplification sometimes need quite large stack.
6161 Increase stack size limits if possible. */
6162 stack_limit_increase (64 * 1024 * 1024);
6164 /* Allocate the argument vector. */
6167 obstack_init (&obstack
);
6169 /* Build multilib_select, et. al from the separate lines that make up each
6170 multilib selection. */
6172 const char *const *q
= multilib_raw
;
6175 obstack_init (&multilib_obstack
);
6176 while ((p
= *q
++) != (char *) 0)
6177 obstack_grow (&multilib_obstack
, p
, strlen (p
));
6179 obstack_1grow (&multilib_obstack
, 0);
6180 multilib_select
= XOBFINISH (&multilib_obstack
, const char *);
6182 q
= multilib_matches_raw
;
6183 while ((p
= *q
++) != (char *) 0)
6184 obstack_grow (&multilib_obstack
, p
, strlen (p
));
6186 obstack_1grow (&multilib_obstack
, 0);
6187 multilib_matches
= XOBFINISH (&multilib_obstack
, const char *);
6189 q
= multilib_exclusions_raw
;
6190 while ((p
= *q
++) != (char *) 0)
6191 obstack_grow (&multilib_obstack
, p
, strlen (p
));
6193 obstack_1grow (&multilib_obstack
, 0);
6194 multilib_exclusions
= XOBFINISH (&multilib_obstack
, const char *);
6197 for (i
= 0; i
< ARRAY_SIZE (multilib_defaults_raw
); i
++)
6200 obstack_1grow (&multilib_obstack
, ' ');
6201 obstack_grow (&multilib_obstack
,
6202 multilib_defaults_raw
[i
],
6203 strlen (multilib_defaults_raw
[i
]));
6207 obstack_1grow (&multilib_obstack
, 0);
6208 multilib_defaults
= XOBFINISH (&multilib_obstack
, const char *);
6211 #ifdef INIT_ENVIRONMENT
6212 /* Set up any other necessary machine specific environment variables. */
6213 xputenv (INIT_ENVIRONMENT
);
6216 /* Make a table of what switches there are (switches, n_switches).
6217 Make a table of specified input files (infiles, n_infiles).
6218 Decode switches that are handled locally. */
6220 process_command (decoded_options_count
, decoded_options
);
6222 /* Initialize the vector of specs to just the default.
6223 This means one element containing 0s, as a terminator. */
6225 compilers
= XNEWVAR (struct compiler
, sizeof default_compilers
);
6226 memcpy (compilers
, default_compilers
, sizeof default_compilers
);
6227 n_compilers
= n_default_compilers
;
6229 /* Read specs from a file if there is one. */
6231 machine_suffix
= concat (spec_machine
, dir_separator_str
,
6232 spec_version
, dir_separator_str
, NULL
);
6233 just_machine_suffix
= concat (spec_machine
, dir_separator_str
, NULL
);
6235 specs_file
= find_a_file (&startfile_prefixes
, "specs", R_OK
, true);
6236 /* Read the specs file unless it is a default one. */
6237 if (specs_file
!= 0 && strcmp (specs_file
, "specs"))
6238 read_specs (specs_file
, TRUE
);
6242 /* We need to check standard_exec_prefix/just_machine_suffix/specs
6243 for any override of as, ld and libraries. */
6244 specs_file
= (char *) alloca (strlen (standard_exec_prefix
)
6245 + strlen (just_machine_suffix
) + sizeof ("specs"));
6247 strcpy (specs_file
, standard_exec_prefix
);
6248 strcat (specs_file
, just_machine_suffix
);
6249 strcat (specs_file
, "specs");
6250 if (access (specs_file
, R_OK
) == 0)
6251 read_specs (specs_file
, TRUE
);
6253 /* Process any configure-time defaults specified for the command line
6254 options, via OPTION_DEFAULT_SPECS. */
6255 for (i
= 0; i
< ARRAY_SIZE (option_default_specs
); i
++)
6256 do_option_spec (option_default_specs
[i
].name
,
6257 option_default_specs
[i
].spec
);
6259 /* Process DRIVER_SELF_SPECS, adding any new options to the end
6260 of the command line. */
6262 for (i
= 0; i
< ARRAY_SIZE (driver_self_specs
); i
++)
6263 do_self_spec (driver_self_specs
[i
]);
6265 /* If not cross-compiling, look for executables in the standard
6267 if (*cross_compile
== '0')
6269 if (*md_exec_prefix
)
6271 add_prefix (&exec_prefixes
, md_exec_prefix
, "GCC",
6272 PREFIX_PRIORITY_LAST
, 0, 0);
6276 /* Process sysroot_suffix_spec. */
6277 if (*sysroot_suffix_spec
!= 0
6278 && do_spec_2 (sysroot_suffix_spec
) == 0)
6280 if (VEC_length (const_char_p
, argbuf
) > 1)
6281 error ("spec failure: more than one arg to SYSROOT_SUFFIX_SPEC");
6282 else if (VEC_length (const_char_p
, argbuf
) == 1)
6283 target_sysroot_suffix
= xstrdup (VEC_last (const_char_p
, argbuf
));
6286 #ifdef HAVE_LD_SYSROOT
6287 /* Pass the --sysroot option to the linker, if it supports that. If
6288 there is a sysroot_suffix_spec, it has already been processed by
6289 this point, so target_system_root really is the system root we
6291 if (target_system_root
)
6293 obstack_grow (&obstack
, "%(sysroot_spec) ", strlen ("%(sysroot_spec) "));
6294 obstack_grow0 (&obstack
, link_spec
, strlen (link_spec
));
6295 set_spec ("link", XOBFINISH (&obstack
, const char *));
6299 /* Process sysroot_hdrs_suffix_spec. */
6300 if (*sysroot_hdrs_suffix_spec
!= 0
6301 && do_spec_2 (sysroot_hdrs_suffix_spec
) == 0)
6303 if (VEC_length (const_char_p
, argbuf
) > 1)
6304 error ("spec failure: more than one arg to SYSROOT_HEADERS_SUFFIX_SPEC");
6305 else if (VEC_length (const_char_p
, argbuf
) == 1)
6306 target_sysroot_hdrs_suffix
= xstrdup (VEC_last (const_char_p
, argbuf
));
6309 /* Look for startfiles in the standard places. */
6310 if (*startfile_prefix_spec
!= 0
6311 && do_spec_2 (startfile_prefix_spec
) == 0
6312 && do_spec_1 (" ", 0, NULL
) == 0)
6316 FOR_EACH_VEC_ELT (const_char_p
, argbuf
, ndx
, arg
)
6317 add_sysrooted_prefix (&startfile_prefixes
, arg
, "BINUTILS",
6318 PREFIX_PRIORITY_LAST
, 0, 1);
6320 /* We should eventually get rid of all these and stick to
6321 startfile_prefix_spec exclusively. */
6322 else if (*cross_compile
== '0' || target_system_root
)
6324 if (*md_startfile_prefix
)
6325 add_sysrooted_prefix (&startfile_prefixes
, md_startfile_prefix
,
6326 "GCC", PREFIX_PRIORITY_LAST
, 0, 1);
6328 if (*md_startfile_prefix_1
)
6329 add_sysrooted_prefix (&startfile_prefixes
, md_startfile_prefix_1
,
6330 "GCC", PREFIX_PRIORITY_LAST
, 0, 1);
6332 /* If standard_startfile_prefix is relative, base it on
6333 standard_exec_prefix. This lets us move the installed tree
6334 as a unit. If GCC_EXEC_PREFIX is defined, base
6335 standard_startfile_prefix on that as well.
6337 If the prefix is relative, only search it for native compilers;
6338 otherwise we will search a directory containing host libraries. */
6339 if (IS_ABSOLUTE_PATH (standard_startfile_prefix
))
6340 add_sysrooted_prefix (&startfile_prefixes
,
6341 standard_startfile_prefix
, "BINUTILS",
6342 PREFIX_PRIORITY_LAST
, 0, 1);
6343 else if (*cross_compile
== '0')
6345 add_prefix (&startfile_prefixes
,
6346 concat (gcc_exec_prefix
6347 ? gcc_exec_prefix
: standard_exec_prefix
,
6349 standard_startfile_prefix
, NULL
),
6350 NULL
, PREFIX_PRIORITY_LAST
, 0, 1);
6353 /* Sysrooted prefixes are relocated because target_system_root is
6354 also relocated by gcc_exec_prefix. */
6355 if (*standard_startfile_prefix_1
)
6356 add_sysrooted_prefix (&startfile_prefixes
,
6357 standard_startfile_prefix_1
, "BINUTILS",
6358 PREFIX_PRIORITY_LAST
, 0, 1);
6359 if (*standard_startfile_prefix_2
)
6360 add_sysrooted_prefix (&startfile_prefixes
,
6361 standard_startfile_prefix_2
, "BINUTILS",
6362 PREFIX_PRIORITY_LAST
, 0, 1);
6365 /* Process any user specified specs in the order given on the command
6367 for (uptr
= user_specs_head
; uptr
; uptr
= uptr
->next
)
6369 char *filename
= find_a_file (&startfile_prefixes
, uptr
->filename
,
6371 read_specs (filename
? filename
: uptr
->filename
, FALSE
);
6374 /* Process any user self specs. */
6376 struct spec_list
*sl
;
6377 for (sl
= specs
; sl
; sl
= sl
->next
)
6378 if (sl
->name_len
== sizeof "self_spec" - 1
6379 && !strcmp (sl
->name
, "self_spec"))
6380 do_self_spec (*sl
->ptr_spec
);
6385 enum save_temps save
;
6387 if (!compare_debug_second
)
6389 n_switches_debug_check
[1] = n_switches
;
6390 n_switches_alloc_debug_check
[1] = n_switches_alloc
;
6391 switches_debug_check
[1] = XDUPVEC (struct switchstr
, switches
,
6394 do_self_spec ("%:compare-debug-self-opt()");
6395 n_switches_debug_check
[0] = n_switches
;
6396 n_switches_alloc_debug_check
[0] = n_switches_alloc
;
6397 switches_debug_check
[0] = switches
;
6399 n_switches
= n_switches_debug_check
[1];
6400 n_switches_alloc
= n_switches_alloc_debug_check
[1];
6401 switches
= switches_debug_check
[1];
6404 /* Avoid crash when computing %j in this early. */
6405 save
= save_temps_flag
;
6406 save_temps_flag
= SAVE_TEMPS_NONE
;
6408 compare_debug
= -compare_debug
;
6409 do_self_spec ("%:compare-debug-self-opt()");
6411 save_temps_flag
= save
;
6413 if (!compare_debug_second
)
6415 n_switches_debug_check
[1] = n_switches
;
6416 n_switches_alloc_debug_check
[1] = n_switches_alloc
;
6417 switches_debug_check
[1] = switches
;
6418 compare_debug
= -compare_debug
;
6419 n_switches
= n_switches_debug_check
[0];
6420 n_switches_alloc
= n_switches_debug_check
[0];
6421 switches
= switches_debug_check
[0];
6426 /* If we have a GCC_EXEC_PREFIX envvar, modify it for cpp's sake. */
6427 if (gcc_exec_prefix
)
6428 gcc_exec_prefix
= concat (gcc_exec_prefix
, spec_machine
, dir_separator_str
,
6429 spec_version
, dir_separator_str
, NULL
);
6431 /* Now we have the specs.
6432 Set the `valid' bits for switches that match anything in any spec. */
6434 validate_all_switches ();
6436 /* Now that we have the switches and the specs, set
6437 the subdirectory based on the options. */
6438 set_multilib_dir ();
6440 /* Set up to remember the pathname of gcc and any options
6441 needed for collect. We use argv[0] instead of progname because
6442 we need the complete pathname. */
6443 obstack_init (&collect_obstack
);
6444 obstack_grow (&collect_obstack
, "COLLECT_GCC=", sizeof ("COLLECT_GCC=") - 1);
6445 obstack_grow (&collect_obstack
, argv
[0], strlen (argv
[0]) + 1);
6446 xputenv (XOBFINISH (&collect_obstack
, char *));
6448 /* Set up to remember the pathname of the lto wrapper. */
6450 lto_wrapper_file
= find_a_file (&exec_prefixes
, "lto-wrapper", X_OK
, false);
6451 if (lto_wrapper_file
)
6453 lto_wrapper_spec
= lto_wrapper_file
;
6454 obstack_init (&collect_obstack
);
6455 obstack_grow (&collect_obstack
, "COLLECT_LTO_WRAPPER=",
6456 sizeof ("COLLECT_LTO_WRAPPER=") - 1);
6457 obstack_grow (&collect_obstack
, lto_wrapper_spec
,
6458 strlen (lto_wrapper_spec
) + 1);
6459 xputenv (XOBFINISH (&collect_obstack
, char *));
6462 /* Warn about any switches that no pass was interested in. */
6464 for (i
= 0; (int) i
< n_switches
; i
++)
6465 if (! switches
[i
].validated
)
6466 error ("unrecognized option %<-%s%>", switches
[i
].part1
);
6468 /* Obey some of the options. */
6470 if (print_search_dirs
)
6472 printf (_("install: %s%s\n"),
6473 gcc_exec_prefix
? gcc_exec_prefix
: standard_exec_prefix
,
6474 gcc_exec_prefix
? "" : machine_suffix
);
6475 printf (_("programs: %s\n"),
6476 build_search_list (&exec_prefixes
, "", false, false));
6477 printf (_("libraries: %s\n"),
6478 build_search_list (&startfile_prefixes
, "", false, true));
6482 if (print_file_name
)
6484 printf ("%s\n", find_file (print_file_name
));
6488 if (print_prog_name
)
6490 char *newname
= find_a_file (&exec_prefixes
, print_prog_name
, X_OK
, 0);
6491 printf ("%s\n", (newname
? newname
: print_prog_name
));
6495 if (print_multi_lib
)
6497 print_multilib_info ();
6501 if (print_multi_directory
)
6503 if (multilib_dir
== NULL
)
6506 printf ("%s\n", multilib_dir
);
6512 if (target_system_root
)
6514 if (target_sysroot_suffix
)
6515 printf ("%s%s\n", target_system_root
, target_sysroot_suffix
);
6517 printf ("%s\n", target_system_root
);
6522 if (print_multi_os_directory
)
6524 if (multilib_os_dir
== NULL
)
6527 printf ("%s\n", multilib_os_dir
);
6531 if (print_sysroot_headers_suffix
)
6533 if (*sysroot_hdrs_suffix_spec
)
6535 printf("%s\n", (target_sysroot_hdrs_suffix
6536 ? target_sysroot_hdrs_suffix
6541 /* The error status indicates that only one set of fixed
6542 headers should be built. */
6543 fatal_error ("not configured with sysroot headers suffix");
6546 if (print_help_list
)
6552 printf (_("\nFor bug reporting instructions, please see:\n"));
6553 printf ("%s.\n", bug_report_url
);
6558 /* We do not exit here. Instead we have created a fake input file
6559 called 'help-dummy' which needs to be compiled, and we pass this
6560 on the various sub-processes, along with the --help switch.
6561 Ensure their output appears after ours. */
6562 fputc ('\n', stdout
);
6568 printf (_("%s %s%s\n"), progname
, pkgversion_string
,
6570 printf ("Copyright %s 2012 Free Software Foundation, Inc.\n",
6572 fputs (_("This is free software; see the source for copying conditions. There is NO\n\
6573 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\n"),
6578 /* We do not exit here. We use the same mechanism of --help to print
6579 the version of the sub-processes. */
6580 fputc ('\n', stdout
);
6589 fnotice (stderr
, "Target: %s\n", spec_machine
);
6590 fnotice (stderr
, "Configured with: %s\n", configuration_arguments
);
6592 #ifdef THREAD_MODEL_SPEC
6593 /* We could have defined THREAD_MODEL_SPEC to "%*" by default,
6594 but there's no point in doing all this processing just to get
6595 thread_model back. */
6596 obstack_init (&obstack
);
6597 do_spec_1 (THREAD_MODEL_SPEC
, 0, thread_model
);
6598 obstack_1grow (&obstack
, '\0');
6599 thrmod
= XOBFINISH (&obstack
, const char *);
6601 thrmod
= thread_model
;
6604 fnotice (stderr
, "Thread model: %s\n", thrmod
);
6606 /* compiler_version is truncated at the first space when initialized
6607 from version string, so truncate version_string at the first space
6608 before comparing. */
6609 for (n
= 0; version_string
[n
]; n
++)
6610 if (version_string
[n
] == ' ')
6613 if (! strncmp (version_string
, compiler_version
, n
)
6614 && compiler_version
[n
] == 0)
6615 fnotice (stderr
, "gcc version %s %s\n", version_string
,
6618 fnotice (stderr
, "gcc driver version %s %sexecuting gcc version %s\n",
6619 version_string
, pkgversion_string
, compiler_version
);
6625 if (n_infiles
== added_libraries
)
6626 fatal_error ("no input files");
6631 /* Make a place to record the compiler output file names
6632 that correspond to the input files. */
6635 i
+= lang_specific_extra_outfiles
;
6636 outfiles
= XCNEWVEC (const char *, i
);
6638 /* Record which files were specified explicitly as link input. */
6640 explicit_link_files
= XCNEWVEC (char, n_infiles
);
6642 combine_inputs
= have_o
|| flag_wpa
;
6644 for (i
= 0; (int) i
< n_infiles
; i
++)
6646 const char *name
= infiles
[i
].name
;
6647 struct compiler
*compiler
= lookup_compiler (name
,
6649 infiles
[i
].language
);
6651 if (compiler
&& !(compiler
->combinable
))
6652 combine_inputs
= false;
6654 if (lang_n_infiles
> 0 && compiler
!= input_file_compiler
6655 && infiles
[i
].language
&& infiles
[i
].language
[0] != '*')
6656 infiles
[i
].incompiler
= compiler
;
6660 input_file_compiler
= compiler
;
6661 infiles
[i
].incompiler
= compiler
;
6665 /* Since there is no compiler for this input file, assume it is a
6667 explicit_link_files
[i
] = 1;
6668 infiles
[i
].incompiler
= NULL
;
6670 infiles
[i
].compiled
= false;
6671 infiles
[i
].preprocessed
= false;
6674 if (!combine_inputs
&& have_c
&& have_o
&& lang_n_infiles
> 1)
6675 fatal_error ("cannot specify -o with -c, -S or -E with multiple files");
6677 for (i
= 0; (int) i
< n_infiles
; i
++)
6679 int this_file_error
= 0;
6681 /* Tell do_spec what to substitute for %i. */
6683 input_file_number
= i
;
6684 set_input (infiles
[i
].name
);
6686 if (infiles
[i
].compiled
)
6689 /* Use the same thing in %o, unless cp->spec says otherwise. */
6691 outfiles
[i
] = gcc_input_filename
;
6693 /* Figure out which compiler from the file's suffix. */
6696 = lookup_compiler (infiles
[i
].name
, input_filename_length
,
6697 infiles
[i
].language
);
6699 if (input_file_compiler
)
6701 /* Ok, we found an applicable compiler. Run its spec. */
6703 if (input_file_compiler
->spec
[0] == '#')
6705 error ("%s: %s compiler not installed on this system",
6706 gcc_input_filename
, &input_file_compiler
->spec
[1]);
6707 this_file_error
= 1;
6713 free (debug_check_temp_file
[0]);
6714 debug_check_temp_file
[0] = NULL
;
6716 free (debug_check_temp_file
[1]);
6717 debug_check_temp_file
[1] = NULL
;
6720 value
= do_spec (input_file_compiler
->spec
);
6721 infiles
[i
].compiled
= true;
6723 this_file_error
= 1;
6724 else if (compare_debug
&& debug_check_temp_file
[0])
6727 inform (0, "recompiling with -fcompare-debug");
6729 compare_debug
= -compare_debug
;
6730 n_switches
= n_switches_debug_check
[1];
6731 n_switches_alloc
= n_switches_alloc_debug_check
[1];
6732 switches
= switches_debug_check
[1];
6734 value
= do_spec (input_file_compiler
->spec
);
6736 compare_debug
= -compare_debug
;
6737 n_switches
= n_switches_debug_check
[0];
6738 n_switches_alloc
= n_switches_alloc_debug_check
[0];
6739 switches
= switches_debug_check
[0];
6743 error ("during -fcompare-debug recompilation");
6744 this_file_error
= 1;
6747 gcc_assert (debug_check_temp_file
[1]
6748 && filename_cmp (debug_check_temp_file
[0],
6749 debug_check_temp_file
[1]));
6752 inform (0, "comparing final insns dumps");
6754 if (compare_files (debug_check_temp_file
))
6755 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
;
6769 /* If this file's name does not contain a recognized suffix,
6770 record it as explicit linker input. */
6773 explicit_link_files
[i
] = 1;
6775 /* Clear the delete-on-failure queue, deleting the files in it
6776 if this compilation failed. */
6778 if (this_file_error
)
6780 delete_failure_queue ();
6783 /* If this compilation succeeded, don't delete those files later. */
6784 clear_failure_queue ();
6787 /* Reset the input file name to the first compile/object file name, for use
6788 with %b in LINK_SPEC. We use the first input file that we can find
6789 a compiler to compile it instead of using infiles.language since for
6790 languages other than C we use aliases that we then lookup later. */
6795 for (i
= 0; i
< n_infiles
; i
++)
6796 if (infiles
[i
].incompiler
6797 || (infiles
[i
].language
&& infiles
[i
].language
[0] != '*'))
6799 set_input (infiles
[i
].name
);
6806 /* Make sure INPUT_FILE_NUMBER points to first available open
6808 input_file_number
= n_infiles
;
6809 if (lang_specific_pre_link ())
6813 /* Determine if there are any linker input files. */
6814 num_linker_inputs
= 0;
6815 for (i
= 0; (int) i
< n_infiles
; i
++)
6816 if (explicit_link_files
[i
] || outfiles
[i
] != NULL
)
6817 num_linker_inputs
++;
6819 /* Run ld to link all the compiler output files. */
6821 if (num_linker_inputs
> 0 && !seen_error () && print_subprocess_help
< 2)
6823 int tmp
= execution_count
;
6824 #if HAVE_LTO_PLUGIN > 0
6825 #if HAVE_LTO_PLUGIN == 2
6826 const char *fno_use_linker_plugin
= "fno-use-linker-plugin";
6828 const char *fuse_linker_plugin
= "fuse-linker-plugin";
6832 /* We'll use ld if we can't find collect2. */
6833 if (! strcmp (linker_name_spec
, "collect2"))
6835 char *s
= find_a_file (&exec_prefixes
, "collect2", X_OK
, false);
6837 linker_name_spec
= "ld";
6840 #if HAVE_LTO_PLUGIN > 0
6841 #if HAVE_LTO_PLUGIN == 2
6842 if (!switch_matches (fno_use_linker_plugin
,
6843 fno_use_linker_plugin
+ strlen (fno_use_linker_plugin
), 0))
6845 if (switch_matches (fuse_linker_plugin
,
6846 fuse_linker_plugin
+ strlen (fuse_linker_plugin
), 0))
6849 linker_plugin_file_spec
= find_a_file (&exec_prefixes
,
6850 LTOPLUGINSONAME
, R_OK
,
6852 if (!linker_plugin_file_spec
)
6853 fatal_error ("-fuse-linker-plugin, but %s not found", LTOPLUGINSONAME
);
6856 lto_gcc_spec
= argv
[0];
6858 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
6860 putenv_from_prefixes (&exec_prefixes
, "COMPILER_PATH", false);
6861 putenv_from_prefixes (&startfile_prefixes
, LIBRARY_PATH_ENV
, true);
6863 if (print_subprocess_help
== 1)
6865 printf (_("\nLinker options\n==============\n\n"));
6866 printf (_("Use \"-Wl,OPTION\" to pass \"OPTION\""
6867 " to the linker.\n\n"));
6870 value
= do_spec (link_command_spec
);
6873 linker_was_run
= (tmp
!= execution_count
);
6876 /* If options said don't run linker,
6877 complain about input files to be given to the linker. */
6879 if (! linker_was_run
&& !seen_error ())
6880 for (i
= 0; (int) i
< n_infiles
; i
++)
6881 if (explicit_link_files
[i
]
6882 && !(infiles
[i
].language
&& infiles
[i
].language
[0] == '*'))
6883 warning (0, "%s: linker input file unused because linking not done",
6886 /* Delete some or all of the temporary files we made. */
6889 delete_failure_queue ();
6890 delete_temp_files ();
6892 if (print_help_list
)
6894 printf (("\nFor bug reporting instructions, please see:\n"));
6895 printf ("%s\n", bug_report_url
);
6899 return (signal_count
!= 0 ? 2
6900 : seen_error () ? (pass_exit_codes
? greatest_status
: 1)
6904 /* Find the proper compilation spec for the file name NAME,
6905 whose length is LENGTH. LANGUAGE is the specified language,
6906 or 0 if this file is to be passed to the linker. */
6908 static struct compiler
*
6909 lookup_compiler (const char *name
, size_t length
, const char *language
)
6911 struct compiler
*cp
;
6913 /* If this was specified by the user to be a linker input, indicate that. */
6914 if (language
!= 0 && language
[0] == '*')
6917 /* Otherwise, look for the language, if one is spec'd. */
6920 for (cp
= compilers
+ n_compilers
- 1; cp
>= compilers
; cp
--)
6921 if (cp
->suffix
[0] == '@' && !strcmp (cp
->suffix
+ 1, language
))
6924 error ("language %s not recognized", language
);
6928 /* Look for a suffix. */
6929 for (cp
= compilers
+ n_compilers
- 1; cp
>= compilers
; cp
--)
6931 if (/* The suffix `-' matches only the file name `-'. */
6932 (!strcmp (cp
->suffix
, "-") && !strcmp (name
, "-"))
6933 || (strlen (cp
->suffix
) < length
6934 /* See if the suffix matches the end of NAME. */
6935 && !strcmp (cp
->suffix
,
6936 name
+ length
- strlen (cp
->suffix
))
6941 #if defined (OS2) ||defined (HAVE_DOS_BASED_FILE_SYSTEM)
6942 /* Look again, but case-insensitively this time. */
6944 for (cp
= compilers
+ n_compilers
- 1; cp
>= compilers
; cp
--)
6946 if (/* The suffix `-' matches only the file name `-'. */
6947 (!strcmp (cp
->suffix
, "-") && !strcmp (name
, "-"))
6948 || (strlen (cp
->suffix
) < length
6949 /* See if the suffix matches the end of NAME. */
6950 && ((!strcmp (cp
->suffix
,
6951 name
+ length
- strlen (cp
->suffix
))
6952 || !strpbrk (cp
->suffix
, "ABCDEFGHIJKLMNOPQRSTUVWXYZ"))
6953 && !strcasecmp (cp
->suffix
,
6954 name
+ length
- strlen (cp
->suffix
)))
6960 if (cp
>= compilers
)
6962 if (cp
->spec
[0] != '@')
6963 /* A non-alias entry: return it. */
6966 /* An alias entry maps a suffix to a language.
6967 Search for the language; pass 0 for NAME and LENGTH
6968 to avoid infinite recursion if language not found. */
6969 return lookup_compiler (NULL
, 0, cp
->spec
+ 1);
6975 save_string (const char *s
, int len
)
6977 char *result
= XNEWVEC (char, len
+ 1);
6979 memcpy (result
, s
, len
);
6985 pfatal_with_name (const char *name
)
6987 perror_with_name (name
);
6988 delete_temp_files ();
6993 perror_with_name (const char *name
)
6995 error ("%s: %m", name
);
6999 validate_switches_from_spec (const char *spec
)
7001 const char *p
= spec
;
7004 if (c
== '%' && (*p
== '{' || *p
== '<' || (*p
== 'W' && *++p
== '{')))
7005 /* We have a switch spec. */
7006 p
= validate_switches (p
+ 1);
7010 validate_all_switches (void)
7012 struct compiler
*comp
;
7013 struct spec_list
*spec
;
7015 for (comp
= compilers
; comp
->spec
; comp
++)
7016 validate_switches_from_spec (comp
->spec
);
7018 /* Look through the linked list of specs read from the specs file. */
7019 for (spec
= specs
; spec
; spec
= spec
->next
)
7020 validate_switches_from_spec (*spec
->ptr_spec
);
7022 validate_switches_from_spec (link_command_spec
);
7025 /* Look at the switch-name that comes after START
7026 and mark as valid all supplied switches that match it. */
7029 validate_switches (const char *start
)
7031 const char *p
= start
;
7035 bool suffix
= false;
7036 bool starred
= false;
7038 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
7047 if (*p
== '.' || *p
== ',')
7051 while (ISIDNUM (*p
) || *p
== '-' || *p
== '+' || *p
== '='
7052 || *p
== ',' || *p
== '.' || *p
== '@')
7057 starred
= true, p
++;
7063 /* Mark all matching switches as valid. */
7064 for (i
= 0; i
< n_switches
; i
++)
7065 if (!strncmp (switches
[i
].part1
, atom
, len
)
7066 && (starred
|| switches
[i
].part1
[len
] == 0))
7067 switches
[i
].validated
= 1;
7071 if (*p
&& (p
[-1] == '|' || p
[-1] == '&'))
7074 if (*p
&& p
[-1] == ':')
7076 while (*p
&& *p
!= ';' && *p
!= '}')
7081 if (*p
== '{' || *p
== '<')
7082 p
= validate_switches (p
+1);
7083 else if (p
[0] == 'W' && p
[1] == '{')
7084 p
= validate_switches (p
+2);
7091 if (*p
&& p
[-1] == ';')
7105 static struct mdswitchstr
*mdswitches
;
7106 static int n_mdswitches
;
7108 /* Check whether a particular argument was used. The first time we
7109 canonicalize the switches to keep only the ones we care about. */
7112 used_arg (const char *p
, int len
)
7117 const char *replace
;
7122 static struct mswitchstr
*mswitches
;
7123 static int n_mswitches
;
7128 struct mswitchstr
*matches
;
7132 /* Break multilib_matches into the component strings of string
7133 and replacement string. */
7134 for (q
= multilib_matches
; *q
!= '\0'; q
++)
7139 = (struct mswitchstr
*) alloca ((sizeof (struct mswitchstr
)) * cnt
);
7141 q
= multilib_matches
;
7150 fatal_error ("multilib spec %qs is invalid",
7155 matches
[i
].len
= q
- matches
[i
].str
;
7157 matches
[i
].replace
= ++q
;
7158 while (*q
!= ';' && *q
!= '\0')
7161 goto invalid_matches
;
7164 matches
[i
].rep_len
= q
- matches
[i
].replace
;
7170 /* Now build a list of the replacement string for switches that we care
7171 about. Make sure we allocate at least one entry. This prevents
7172 xmalloc from calling fatal, and prevents us from re-executing this
7175 = XNEWVEC (struct mswitchstr
, n_mdswitches
+ (n_switches
? n_switches
: 1));
7176 for (i
= 0; i
< n_switches
; i
++)
7177 if ((switches
[i
].live_cond
& SWITCH_IGNORE
) == 0)
7179 int xlen
= strlen (switches
[i
].part1
);
7180 for (j
= 0; j
< cnt
; j
++)
7181 if (xlen
== matches
[j
].len
7182 && ! strncmp (switches
[i
].part1
, matches
[j
].str
, xlen
))
7184 mswitches
[n_mswitches
].str
= matches
[j
].replace
;
7185 mswitches
[n_mswitches
].len
= matches
[j
].rep_len
;
7186 mswitches
[n_mswitches
].replace
= (char *) 0;
7187 mswitches
[n_mswitches
].rep_len
= 0;
7193 /* Add MULTILIB_DEFAULTS switches too, as long as they were not present
7194 on the command line nor any options mutually incompatible with
7196 for (i
= 0; i
< n_mdswitches
; i
++)
7200 for (q
= multilib_options
; *q
!= '\0'; q
++)
7206 while (strncmp (q
, mdswitches
[i
].str
, mdswitches
[i
].len
) != 0
7207 || strchr (" /", q
[mdswitches
[i
].len
]) == NULL
)
7209 while (*q
!= ' ' && *q
!= '/' && *q
!= '\0')
7216 if (*q
!= ' ' && *q
!= '\0')
7218 while (*r
!= ' ' && *r
!= '\0')
7221 while (*q
!= ' ' && *q
!= '/' && *q
!= '\0')
7224 if (used_arg (r
, q
- r
))
7229 mswitches
[n_mswitches
].str
= mdswitches
[i
].str
;
7230 mswitches
[n_mswitches
].len
= mdswitches
[i
].len
;
7231 mswitches
[n_mswitches
].replace
= (char *) 0;
7232 mswitches
[n_mswitches
].rep_len
= 0;
7245 for (i
= 0; i
< n_mswitches
; i
++)
7246 if (len
== mswitches
[i
].len
&& ! strncmp (p
, mswitches
[i
].str
, len
))
7253 default_arg (const char *p
, int len
)
7257 for (i
= 0; i
< n_mdswitches
; i
++)
7258 if (len
== mdswitches
[i
].len
&& ! strncmp (p
, mdswitches
[i
].str
, len
))
7264 /* Work out the subdirectory to use based on the options. The format of
7265 multilib_select is a list of elements. Each element is a subdirectory
7266 name followed by a list of options followed by a semicolon. The format
7267 of multilib_exclusions is the same, but without the preceding
7268 directory. First gcc will check the exclusions, if none of the options
7269 beginning with an exclamation point are present, and all of the other
7270 options are present, then we will ignore this completely. Passing
7271 that, gcc will consider each multilib_select in turn using the same
7272 rules for matching the options. If a match is found, that subdirectory
7276 set_multilib_dir (void)
7279 unsigned int this_path_len
;
7280 const char *this_path
, *this_arg
;
7281 const char *start
, *end
;
7283 int ok
, ndfltok
, first
;
7286 start
= multilib_defaults
;
7287 while (*start
== ' ' || *start
== '\t')
7289 while (*start
!= '\0')
7292 while (*start
!= ' ' && *start
!= '\t' && *start
!= '\0')
7294 while (*start
== ' ' || *start
== '\t')
7302 mdswitches
= XNEWVEC (struct mdswitchstr
, n_mdswitches
);
7303 for (start
= multilib_defaults
; *start
!= '\0'; start
= end
+ 1)
7305 while (*start
== ' ' || *start
== '\t')
7311 for (end
= start
+ 1;
7312 *end
!= ' ' && *end
!= '\t' && *end
!= '\0'; end
++)
7315 obstack_grow (&multilib_obstack
, start
, end
- start
);
7316 obstack_1grow (&multilib_obstack
, 0);
7317 mdswitches
[i
].str
= XOBFINISH (&multilib_obstack
, const char *);
7318 mdswitches
[i
++].len
= end
- start
;
7325 p
= multilib_exclusions
;
7328 /* Ignore newlines. */
7335 /* Check the arguments. */
7342 fatal_error ("multilib exclusions %qs is invalid",
7343 multilib_exclusions
);
7353 while (*p
!= ' ' && *p
!= ';')
7356 goto invalid_exclusions
;
7360 if (*this_arg
!= '!')
7368 ok
= used_arg (this_arg
, p
- this_arg
);
7383 p
= multilib_select
;
7386 /* Ignore newlines. */
7393 /* Get the initial path. */
7400 fatal_error ("multilib select %qs is invalid",
7405 this_path_len
= p
- this_path
;
7407 /* Check the arguments. */
7414 goto invalid_select
;
7423 while (*p
!= ' ' && *p
!= ';')
7426 goto invalid_select
;
7430 if (*this_arg
!= '!')
7438 /* If this is a default argument, we can just ignore it.
7439 This is true even if this_arg begins with '!'. Beginning
7440 with '!' does not mean that this argument is necessarily
7441 inappropriate for this library: it merely means that
7442 there is a more specific library which uses this
7443 argument. If this argument is a default, we need not
7444 consider that more specific library. */
7445 ok
= used_arg (this_arg
, p
- this_arg
);
7452 if (default_arg (this_arg
, p
- this_arg
))
7461 if (this_path_len
!= 1
7462 || this_path
[0] != '.')
7464 char *new_multilib_dir
= XNEWVEC (char, this_path_len
+ 1);
7467 strncpy (new_multilib_dir
, this_path
, this_path_len
);
7468 new_multilib_dir
[this_path_len
] = '\0';
7469 q
= strchr (new_multilib_dir
, ':');
7472 multilib_dir
= new_multilib_dir
;
7479 const char *q
= this_path
, *end
= this_path
+ this_path_len
;
7481 while (q
< end
&& *q
!= ':')
7485 char *new_multilib_os_dir
= XNEWVEC (char, end
- q
);
7486 memcpy (new_multilib_os_dir
, q
+ 1, end
- q
- 1);
7487 new_multilib_os_dir
[end
- q
- 1] = '\0';
7488 multilib_os_dir
= new_multilib_os_dir
;
7496 if (multilib_dir
== NULL
&& multilib_os_dir
!= NULL
7497 && strcmp (multilib_os_dir
, ".") == 0)
7499 free (CONST_CAST (char *, multilib_os_dir
));
7500 multilib_os_dir
= NULL
;
7502 else if (multilib_dir
!= NULL
&& multilib_os_dir
== NULL
)
7503 multilib_os_dir
= multilib_dir
;
7506 /* Print out the multiple library subdirectory selection
7507 information. This prints out a series of lines. Each line looks
7508 like SUBDIRECTORY;@OPTION@OPTION, with as many options as is
7509 required. Only the desired options are printed out, the negative
7510 matches. The options are print without a leading dash. There are
7511 no spaces to make it easy to use the information in the shell.
7512 Each subdirectory is printed only once. This assumes the ordering
7513 generated by the genmultilib script. Also, we leave out ones that match
7517 print_multilib_info (void)
7519 const char *p
= multilib_select
;
7520 const char *last_path
= 0, *this_path
;
7522 unsigned int last_path_len
= 0;
7527 /* Ignore newlines. */
7534 /* Get the initial path. */
7541 fatal_error ("multilib select %qs is invalid", multilib_select
);
7547 /* When --disable-multilib was used but target defines
7548 MULTILIB_OSDIRNAMES, entries starting with .: are there just
7549 to find multilib_os_dir, so skip them from output. */
7550 if (this_path
[0] == '.' && this_path
[1] == ':')
7553 /* Check for matches with the multilib_exclusions. We don't bother
7554 with the '!' in either list. If any of the exclusion rules match
7555 all of its options with the select rule, we skip it. */
7557 const char *e
= multilib_exclusions
;
7558 const char *this_arg
;
7563 /* Ignore newlines. */
7570 /* Check the arguments. */
7579 fatal_error ("multilib exclusion %qs is invalid",
7580 multilib_exclusions
);
7591 while (*e
!= ' ' && *e
!= ';')
7594 goto invalid_exclusion
;
7602 int len
= e
- this_arg
;
7605 goto invalid_select
;
7609 while (*q
!= ' ' && *q
!= ';')
7612 goto invalid_select
;
7616 if (! strncmp (arg
, this_arg
,
7617 (len
< q
- arg
) ? q
- arg
: len
)
7618 || default_arg (this_arg
, e
- this_arg
))
7648 /* If this is a duplicate, skip it. */
7649 skip
= (last_path
!= 0
7650 && (unsigned int) (p
- this_path
) == last_path_len
7651 && ! filename_ncmp (last_path
, this_path
, last_path_len
));
7653 last_path
= this_path
;
7654 last_path_len
= p
- this_path
;
7657 /* If this directory requires any default arguments, we can skip
7658 it. We will already have printed a directory identical to
7659 this one which does not require that default argument. */
7670 goto invalid_select
;
7677 while (*q
!= ' ' && *q
!= ';')
7680 goto invalid_select
;
7685 && default_arg (arg
, q
- arg
))
7700 for (p1
= last_path
; p1
< p
&& *p1
!= ':'; p1
++)
7711 goto invalid_select
;
7719 use_arg
= *p
!= '!';
7724 while (*p
!= ' ' && *p
!= ';')
7727 goto invalid_select
;
7739 /* If there are extra options, print them now. */
7740 if (multilib_extra
&& *multilib_extra
)
7742 int print_at
= TRUE
;
7745 for (q
= multilib_extra
; *q
!= '\0'; q
++)
7766 /* getenv built-in spec function.
7768 Returns the value of the environment variable given by its first
7769 argument, concatenated with the second argument. If the
7770 environment variable is not defined, a fatal error is issued. */
7773 getenv_spec_function (int argc
, const char **argv
)
7783 value
= getenv (argv
[0]);
7785 fatal_error ("environment variable %qs not defined", argv
[0]);
7787 /* We have to escape every character of the environment variable so
7788 they are not interpreted as active spec characters. A
7789 particularly painful case is when we are reading a variable
7790 holding a windows path complete with \ separators. */
7791 len
= strlen (value
) * 2 + strlen (argv
[1]) + 1;
7792 result
= XNEWVAR (char, len
);
7793 for (ptr
= result
; *value
; ptr
+= 2)
7799 strcpy (ptr
, argv
[1]);
7804 /* if-exists built-in spec function.
7806 Checks to see if the file specified by the absolute pathname in
7807 ARGS exists. Returns that pathname if found.
7809 The usual use for this function is to check for a library file
7810 (whose name has been expanded with %s). */
7813 if_exists_spec_function (int argc
, const char **argv
)
7815 /* Must have only one argument. */
7816 if (argc
== 1 && IS_ABSOLUTE_PATH (argv
[0]) && ! access (argv
[0], R_OK
))
7822 /* if-exists-else built-in spec function.
7824 This is like if-exists, but takes an additional argument which
7825 is returned if the first argument does not exist. */
7828 if_exists_else_spec_function (int argc
, const char **argv
)
7830 /* Must have exactly two arguments. */
7834 if (IS_ABSOLUTE_PATH (argv
[0]) && ! access (argv
[0], R_OK
))
7840 /* replace-outfile built-in spec function.
7842 This looks for the first argument in the outfiles array's name and
7843 replaces it with the second argument. */
7846 replace_outfile_spec_function (int argc
, const char **argv
)
7849 /* Must have exactly two arguments. */
7853 for (i
= 0; i
< n_infiles
; i
++)
7855 if (outfiles
[i
] && !filename_cmp (outfiles
[i
], argv
[0]))
7856 outfiles
[i
] = xstrdup (argv
[1]);
7861 /* remove-outfile built-in spec function.
7863 * This looks for the first argument in the outfiles array's name and
7867 remove_outfile_spec_function (int argc
, const char **argv
)
7870 /* Must have exactly one argument. */
7874 for (i
= 0; i
< n_infiles
; i
++)
7876 if (outfiles
[i
] && !filename_cmp (outfiles
[i
], argv
[0]))
7882 /* Given two version numbers, compares the two numbers.
7883 A version number must match the regular expression
7884 ([1-9][0-9]*|0)(\.([1-9][0-9]*|0))*
7887 compare_version_strings (const char *v1
, const char *v2
)
7892 if (regcomp (&r
, "^([1-9][0-9]*|0)(\\.([1-9][0-9]*|0))*$",
7893 REG_EXTENDED
| REG_NOSUB
) != 0)
7895 rresult
= regexec (&r
, v1
, 0, NULL
, 0);
7896 if (rresult
== REG_NOMATCH
)
7897 fatal_error ("invalid version number %qs", v1
);
7898 else if (rresult
!= 0)
7900 rresult
= regexec (&r
, v2
, 0, NULL
, 0);
7901 if (rresult
== REG_NOMATCH
)
7902 fatal_error ("invalid version number %qs", v2
);
7903 else if (rresult
!= 0)
7906 return strverscmp (v1
, v2
);
7910 /* version_compare built-in spec function.
7912 This takes an argument of the following form:
7914 <comparison-op> <arg1> [<arg2>] <switch> <result>
7916 and produces "result" if the comparison evaluates to true,
7917 and nothing if it doesn't.
7919 The supported <comparison-op> values are:
7921 >= true if switch is a later (or same) version than arg1
7923 < true if switch is an earlier version than arg1
7925 >< true if switch is arg1 or later, and earlier than arg2
7926 <> true if switch is earlier than arg1 or is arg2 or later
7928 If the switch is not present, the condition is false unless
7929 the first character of the <comparison-op> is '!'.
7932 %:version-compare(>= 10.3 mmacosx-version-min= -lmx)
7933 adds -lmx if -mmacosx-version-min=10.3.9 was passed. */
7936 version_compare_spec_function (int argc
, const char **argv
)
7940 const char *switch_value
= NULL
;
7945 fatal_error ("too few arguments to %%:version-compare");
7946 if (argv
[0][0] == '\0')
7948 if ((argv
[0][1] == '<' || argv
[0][1] == '>') && argv
[0][0] != '!')
7950 if (argc
!= nargs
+ 3)
7951 fatal_error ("too many arguments to %%:version-compare");
7953 switch_len
= strlen (argv
[nargs
+ 1]);
7954 for (i
= 0; i
< n_switches
; i
++)
7955 if (!strncmp (switches
[i
].part1
, argv
[nargs
+ 1], switch_len
)
7956 && check_live_switch (i
, switch_len
))
7957 switch_value
= switches
[i
].part1
+ switch_len
;
7959 if (switch_value
== NULL
)
7963 comp1
= compare_version_strings (switch_value
, argv
[1]);
7965 comp2
= compare_version_strings (switch_value
, argv
[2]);
7967 comp2
= -1; /* This value unused. */
7970 switch (argv
[0][0] << 8 | argv
[0][1])
7972 case '>' << 8 | '=':
7973 result
= comp1
>= 0;
7975 case '!' << 8 | '<':
7976 result
= comp1
>= 0 || switch_value
== NULL
;
7981 case '!' << 8 | '>':
7982 result
= comp1
< 0 || switch_value
== NULL
;
7984 case '>' << 8 | '<':
7985 result
= comp1
>= 0 && comp2
< 0;
7987 case '<' << 8 | '>':
7988 result
= comp1
< 0 || comp2
>= 0;
7992 fatal_error ("unknown operator %qs in %%:version-compare", argv
[0]);
7997 return argv
[nargs
+ 2];
8000 /* %:include builtin spec function. This differs from %include in that it
8001 can be nested inside a spec, and thus be conditionalized. It takes
8002 one argument, the filename, and looks for it in the startfile path.
8003 The result is always NULL, i.e. an empty expansion. */
8006 include_spec_function (int argc
, const char **argv
)
8013 file
= find_a_file (&startfile_prefixes
, argv
[0], R_OK
, true);
8014 read_specs (file
? file
: argv
[0], FALSE
);
8019 /* %:find-file spec function. This function replaces its argument by
8020 the file found thru find_file, that is the -print-file-name gcc
8023 find_file_spec_function (int argc
, const char **argv
)
8030 file
= find_file (argv
[0]);
8035 /* %:find-plugindir spec function. This function replaces its argument
8036 by the -iplugindir=<dir> option. `dir' is found thru find_file, that
8037 is the -print-file-name gcc program option. */
8039 find_plugindir_spec_function (int argc
, const char **argv ATTRIBUTE_UNUSED
)
8046 option
= concat ("-iplugindir=", find_file ("plugin"), NULL
);
8051 /* %:print-asm-header spec function. Print a banner to say that the
8052 following output is from the assembler. */
8055 print_asm_header_spec_function (int arg ATTRIBUTE_UNUSED
,
8056 const char **argv ATTRIBUTE_UNUSED
)
8058 printf (_("Assembler options\n=================\n\n"));
8059 printf (_("Use \"-Wa,OPTION\" to pass \"OPTION\" to the assembler.\n\n"));
8064 /* Get a random number for -frandom-seed */
8066 static unsigned HOST_WIDE_INT
8067 get_random_number (void)
8069 unsigned HOST_WIDE_INT ret
= 0;
8072 fd
= open ("/dev/urandom", O_RDONLY
);
8075 read (fd
, &ret
, sizeof (HOST_WIDE_INT
));
8081 /* Get some more or less random data. */
8082 #ifdef HAVE_GETTIMEOFDAY
8086 gettimeofday (&tv
, NULL
);
8087 ret
= tv
.tv_sec
* 1000 + tv
.tv_usec
/ 1000;
8091 time_t now
= time (NULL
);
8093 if (now
!= (time_t)-1)
8094 ret
= (unsigned) now
;
8098 return ret
^ getpid();
8101 /* %:compare-debug-dump-opt spec function. Save the last argument,
8102 expected to be the last -fdump-final-insns option, or generate a
8106 compare_debug_dump_opt_spec_function (int arg
,
8107 const char **argv ATTRIBUTE_UNUSED
)
8112 static char random_seed
[HOST_BITS_PER_WIDE_INT
/ 4 + 3];
8115 fatal_error ("too many arguments to %%:compare-debug-dump-opt");
8117 do_spec_2 ("%{fdump-final-insns=*:%*}");
8118 do_spec_1 (" ", 0, NULL
);
8120 if (VEC_length (const_char_p
, argbuf
) > 0
8121 && strcmp (argv
[VEC_length (const_char_p
, argbuf
) - 1], "."))
8126 name
= xstrdup (argv
[VEC_length (const_char_p
, argbuf
) - 1]);
8131 const char *ext
= NULL
;
8133 if (VEC_length (const_char_p
, argbuf
) > 0)
8135 do_spec_2 ("%{o*:%*}%{!o:%{!S:%b%O}%{S:%b.s}}");
8138 else if (!compare_debug
)
8141 do_spec_2 ("%g.gkd");
8143 do_spec_1 (" ", 0, NULL
);
8145 gcc_assert (VEC_length (const_char_p
, argbuf
) > 0);
8147 name
= concat (VEC_last (const_char_p
, argbuf
), ext
, NULL
);
8149 ret
= concat ("-fdump-final-insns=", name
, NULL
);
8152 which
= compare_debug
< 0;
8153 debug_check_temp_file
[which
] = name
;
8157 unsigned HOST_WIDE_INT value
= get_random_number ();
8159 sprintf (random_seed
, HOST_WIDE_INT_PRINT_HEX
, value
);
8163 ret
= concat ("%{!frandom-seed=*:-frandom-seed=", random_seed
, "} ",
8172 static const char *debug_auxbase_opt
;
8174 /* %:compare-debug-self-opt spec function. Expands to the options
8175 that are to be passed in the second compilation of
8179 compare_debug_self_opt_spec_function (int arg
,
8180 const char **argv ATTRIBUTE_UNUSED
)
8183 fatal_error ("too many arguments to %%:compare-debug-self-opt");
8185 if (compare_debug
>= 0)
8188 do_spec_2 ("%{c|S:%{o*:%*}}");
8189 do_spec_1 (" ", 0, NULL
);
8191 if (VEC_length (const_char_p
, argbuf
) > 0)
8192 debug_auxbase_opt
= concat ("-auxbase-strip ",
8193 VEC_last (const_char_p
, argbuf
),
8196 debug_auxbase_opt
= NULL
;
8199 %<o %<MD %<MMD %<MF* %<MG %<MP %<MQ* %<MT* \
8200 %<fdump-final-insns=* -w -S -o %j \
8201 %{!fcompare-debug-second:-fcompare-debug-second} \
8202 ", compare_debug_opt
, NULL
);
8205 /* %:compare-debug-auxbase-opt spec function. Expands to the auxbase
8206 options that are to be passed in the second compilation of
8207 compare-debug. It expects, as an argument, the basename of the
8208 current input file name, with the .gk suffix appended to it. */
8211 compare_debug_auxbase_opt_spec_function (int arg
,
8218 fatal_error ("too few arguments to %%:compare-debug-auxbase-opt");
8221 fatal_error ("too many arguments to %%:compare-debug-auxbase-opt");
8223 if (compare_debug
>= 0)
8226 len
= strlen (argv
[0]);
8227 if (len
< 3 || strcmp (argv
[0] + len
- 3, ".gk") != 0)
8228 fatal_error ("argument to %%:compare-debug-auxbase-opt "
8229 "does not end in .gk");
8231 if (debug_auxbase_opt
)
8232 return debug_auxbase_opt
;
8234 #define OPT "-auxbase "
8237 name
= (char*) xmalloc (sizeof (OPT
) + len
);
8238 memcpy (name
, OPT
, sizeof (OPT
) - 1);
8239 memcpy (name
+ sizeof (OPT
) - 1, argv
[0], len
);
8240 name
[sizeof (OPT
) - 1 + len
] = '\0';
8247 /* %:pass-through-libs spec function. Finds all -l options and input
8248 file names in the lib spec passed to it, and makes a list of them
8249 prepended with the plugin option to cause them to be passed through
8250 to the final link after all the new object files have been added. */
8253 pass_through_libs_spec_func (int argc
, const char **argv
)
8255 char *prepended
= xstrdup (" ");
8257 /* Shlemiel the painter's algorithm. Innately horrible, but at least
8258 we know that there will never be more than a handful of strings to
8259 concat, and it's only once per run, so it's not worth optimising. */
8260 for (n
= 0; n
< argc
; n
++)
8262 char *old
= prepended
;
8263 /* Anything that isn't an option is a full path to an output
8264 file; pass it through if it ends in '.a'. Among options,
8266 if (argv
[n
][0] == '-' && argv
[n
][1] == 'l')
8268 const char *lopt
= argv
[n
] + 2;
8269 /* Handle both joined and non-joined -l options. If for any
8270 reason there's a trailing -l with no joined or following
8271 arg just discard it. */
8272 if (!*lopt
&& ++n
>= argc
)
8276 prepended
= concat (prepended
, "-plugin-opt=-pass-through=-l",
8279 else if (!strcmp (".a", argv
[n
] + strlen (argv
[n
]) - 2))
8281 prepended
= concat (prepended
, "-plugin-opt=-pass-through=",
8282 argv
[n
], " ", NULL
);
8284 if (prepended
!= old
)