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 /* By default there is no special suffix for target executables. */
49 /* FIXME: when autoconf is fixed, remove the host check - dj */
50 #if defined(TARGET_EXECUTABLE_SUFFIX) && defined(HOST_EXECUTABLE_SUFFIX)
51 #define HAVE_TARGET_EXECUTABLE_SUFFIX
54 /* By default there is no special suffix for host executables. */
55 #ifdef HOST_EXECUTABLE_SUFFIX
56 #define HAVE_HOST_EXECUTABLE_SUFFIX
58 #define HOST_EXECUTABLE_SUFFIX ""
61 /* By default, the suffix for target object files is ".o". */
62 #ifdef TARGET_OBJECT_SUFFIX
63 #define HAVE_TARGET_OBJECT_SUFFIX
65 #define TARGET_OBJECT_SUFFIX ".o"
68 static const char dir_separator_str
[] = { DIR_SEPARATOR
, 0 };
70 /* Most every one is fine with LIBRARY_PATH. For some, it conflicts. */
71 #ifndef LIBRARY_PATH_ENV
72 #define LIBRARY_PATH_ENV "LIBRARY_PATH"
75 /* If a stage of compilation returns an exit status >= 1,
76 compilation of that file ceases. */
78 #define MIN_FATAL_STATUS 1
80 /* Flag set by cppspec.c to 1. */
83 /* Flag set to nonzero if an @file argument has been supplied to gcc. */
84 static bool at_file_supplied
;
86 /* Definition of string containing the arguments given to configure. */
87 #include "configargs.h"
89 /* Flag saying to print the command line options understood by gcc and its
92 static int print_help_list
;
94 /* Flag saying to print the version of gcc and its sub-processes. */
96 static int print_version
;
98 /* Flag indicating whether we should ONLY print the command and
99 arguments (like verbose_flag) without executing the command.
100 Displayed arguments are quoted so that the generated command
101 line is suitable for execution. This is intended for use in
102 shell scripts to capture the driver-generated command line. */
103 static int verbose_only_flag
;
105 /* Flag indicating how to print command line options of sub-processes. */
107 static int print_subprocess_help
;
109 /* Whether we should report subprocess execution times to a file. */
111 FILE *report_times_to_file
= NULL
;
113 /* Nonzero means place this string before uses of /, so that include
114 and library files can be found in an alternate location. */
116 #ifdef TARGET_SYSTEM_ROOT
117 static const char *target_system_root
= TARGET_SYSTEM_ROOT
;
119 static const char *target_system_root
= 0;
122 /* Nonzero means pass the updated target_system_root to the compiler. */
124 static int target_system_root_changed
;
126 /* Nonzero means append this string to target_system_root. */
128 static const char *target_sysroot_suffix
= 0;
130 /* Nonzero means append this string to target_system_root for headers. */
132 static const char *target_sysroot_hdrs_suffix
= 0;
134 /* Nonzero means write "temp" files in source directory
135 and use the source file's name in them, and don't delete them. */
137 static enum save_temps
{
138 SAVE_TEMPS_NONE
, /* no -save-temps */
139 SAVE_TEMPS_CWD
, /* -save-temps in current directory */
140 SAVE_TEMPS_OBJ
/* -save-temps in object directory */
143 /* Output file to use to get the object directory for -save-temps=obj */
144 static char *save_temps_prefix
= 0;
145 static size_t save_temps_length
= 0;
147 /* The compiler version. */
149 static const char *compiler_version
;
151 /* The target version. */
153 static const char *const spec_version
= DEFAULT_TARGET_VERSION
;
155 /* The target machine. */
157 static const char *spec_machine
= DEFAULT_TARGET_MACHINE
;
159 /* Nonzero if cross-compiling.
160 When -b is used, the value comes from the `specs' file. */
162 #ifdef CROSS_DIRECTORY_STRUCTURE
163 static const char *cross_compile
= "1";
165 static const char *cross_compile
= "0";
168 /* Greatest exit code of sub-processes that has been encountered up to
170 static int greatest_status
= 1;
172 /* This is the obstack which we use to allocate many strings. */
174 static struct obstack obstack
;
176 /* This is the obstack to build an environment variable to pass to
177 collect2 that describes all of the relevant switches of what to
178 pass the compiler in building the list of pointers to constructors
181 static struct obstack collect_obstack
;
183 /* Forward declaration for prototypes. */
187 static void init_spec (void);
188 static void store_arg (const char *, int, int);
189 static void insert_wrapper (const char *);
190 static char *load_specs (const char *);
191 static void read_specs (const char *, int);
192 static void set_spec (const char *, const char *);
193 static struct compiler
*lookup_compiler (const char *, size_t, const char *);
194 static char *build_search_list (const struct path_prefix
*, const char *,
196 static void xputenv (const char *);
197 static void putenv_from_prefixes (const struct path_prefix
*, const char *,
199 static int access_check (const char *, int);
200 static char *find_a_file (const struct path_prefix
*, const char *, int, bool);
201 static void add_prefix (struct path_prefix
*, const char *, const char *,
203 static void add_sysrooted_prefix (struct path_prefix
*, const char *,
204 const char *, int, int, int);
205 static char *skip_whitespace (char *);
206 static void delete_if_ordinary (const char *);
207 static void delete_temp_files (void);
208 static void delete_failure_queue (void);
209 static void clear_failure_queue (void);
210 static int check_live_switch (int, int);
211 static const char *handle_braces (const char *);
212 static inline bool input_suffix_matches (const char *, const char *);
213 static inline bool switch_matches (const char *, const char *, int);
214 static inline void mark_matching_switches (const char *, const char *, int);
215 static inline void process_marked_switches (void);
216 static const char *process_brace_body (const char *, const char *, const char *, int, int);
217 static const struct spec_function
*lookup_spec_function (const char *);
218 static const char *eval_spec_function (const char *, const char *);
219 static const char *handle_spec_function (const char *);
220 static char *save_string (const char *, int);
221 static void set_collect_gcc_options (void);
222 static int do_spec_1 (const char *, int, const char *);
223 static int do_spec_2 (const char *);
224 static void do_option_spec (const char *, const char *);
225 static void do_self_spec (const char *);
226 static const char *find_file (const char *);
227 static int is_directory (const char *, bool);
228 static const char *validate_switches (const char *);
229 static void validate_all_switches (void);
230 static inline void validate_switches_from_spec (const char *);
231 static void give_switch (int, int);
232 static int used_arg (const char *, int);
233 static int default_arg (const char *, int);
234 static void set_multilib_dir (void);
235 static void print_multilib_info (void);
236 static void perror_with_name (const char *);
237 static void display_help (void);
238 static void add_preprocessor_option (const char *, int);
239 static void add_assembler_option (const char *, int);
240 static void add_linker_option (const char *, int);
241 static void process_command (unsigned int, struct cl_decoded_option
*);
242 static int execute (void);
243 static void alloc_args (void);
244 static void clear_args (void);
245 static void fatal_signal (int);
246 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
247 static void init_gcc_specs (struct obstack
*, const char *, const char *,
250 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
251 static const char *convert_filename (const char *, int, int);
254 static const char *getenv_spec_function (int, const char **);
255 static const char *if_exists_spec_function (int, const char **);
256 static const char *if_exists_else_spec_function (int, const char **);
257 static const char *replace_outfile_spec_function (int, const char **);
258 static const char *remove_outfile_spec_function (int, const char **);
259 static const char *version_compare_spec_function (int, const char **);
260 static const char *include_spec_function (int, const char **);
261 static const char *find_file_spec_function (int, const char **);
262 static const char *find_plugindir_spec_function (int, const char **);
263 static const char *print_asm_header_spec_function (int, const char **);
264 static const char *compare_debug_dump_opt_spec_function (int, const char **);
265 static const char *compare_debug_self_opt_spec_function (int, const char **);
266 static const char *compare_debug_auxbase_opt_spec_function (int, const char **);
267 static const char *pass_through_libs_spec_func (int, const char **);
269 /* The Specs Language
271 Specs are strings containing lines, each of which (if not blank)
272 is made up of a program name, and arguments separated by spaces.
273 The program name must be exact and start from root, since no path
274 is searched and it is unreliable to depend on the current working directory.
275 Redirection of input or output is not supported; the subprograms must
276 accept filenames saying what files to read and write.
278 In addition, the specs can contain %-sequences to substitute variable text
279 or for conditional text. Here is a table of all defined %-sequences.
280 Note that spaces are not generated automatically around the results of
281 expanding these sequences; therefore, you can concatenate them together
282 or with constant text in a single argument.
284 %% substitute one % into the program name or argument.
285 %i substitute the name of the input file being processed.
286 %b substitute the basename of the input file being processed.
287 This is the substring up to (and not including) the last period
288 and not including the directory unless -save-temps was specified
289 to put temporaries in a different location.
290 %B same as %b, but include the file suffix (text after the last period).
292 substitute a file name that has suffix SUFFIX and is chosen
293 once per compilation, and mark the argument a la %d. To reduce
294 exposure to denial-of-service attacks, the file name is now
295 chosen in a way that is hard to predict even when previously
296 chosen file names are known. For example, `%g.s ... %g.o ... %g.s'
297 might turn into `ccUVUUAU.s ccXYAXZ12.o ccUVUUAU.s'. SUFFIX matches
298 the regexp "[.0-9A-Za-z]*%O"; "%O" is treated exactly as if it
299 had been pre-processed. Previously, %g was simply substituted
300 with a file name chosen once per compilation, without regard
301 to any appended suffix (which was therefore treated just like
302 ordinary text), making such attacks more likely to succeed.
304 like %g, but if -pipe is in effect, expands simply to "-".
306 like %g, but if -pipe is in effect, expands to nothing. (We have both
307 %| and %m to accommodate differences between system assemblers; see
308 the AS_NEEDS_DASH_FOR_PIPED_INPUT target macro.)
310 like %g, but generates a new temporary file name even if %uSUFFIX
313 substitutes the last file name generated with %uSUFFIX, generating a
314 new one if there is no such last file name. In the absence of any
315 %uSUFFIX, this is just like %gSUFFIX, except they don't share
316 the same suffix "space", so `%g.s ... %U.s ... %g.s ... %U.s'
317 would involve the generation of two distinct file names, one
318 for each `%g.s' and another for each `%U.s'. Previously, %U was
319 simply substituted with a file name chosen for the previous %u,
320 without regard to any appended suffix.
322 substitutes the name of the HOST_BIT_BUCKET, if any, and if it is
323 writable, and if save-temps is off; otherwise, substitute the name
324 of a temporary file, just like %u. This temporary file is not
325 meant for communication between processes, but rather as a junk
328 substitutes .SUFFIX for the suffixes of a matched switch's args when
329 it is subsequently output with %*. SUFFIX is terminated by the next
331 %d marks the argument containing or following the %d as a
332 temporary file name, so that that file will be deleted if GCC exits
333 successfully. Unlike %g, this contributes no text to the argument.
334 %w marks the argument containing or following the %w as the
335 "output file" of this compilation. This puts the argument
336 into the sequence of arguments that %o will substitute later.
337 %V indicates that this compilation produces no "output file".
339 like %{...} but mark last argument supplied within
340 as a file to be deleted on failure.
341 %o substitutes the names of all the output files, with spaces
342 automatically placed around them. You should write spaces
343 around the %o as well or the results are undefined.
344 %o is for use in the specs for running the linker.
345 Input files whose names have no recognized suffix are not compiled
346 at all, but they are included among the output files, so they will
348 %O substitutes the suffix for object files. Note that this is
349 handled specially when it immediately follows %g, %u, or %U
350 (with or without a suffix argument) because of the need for
351 those to form complete file names. The handling is such that
352 %O is treated exactly as if it had already been substituted,
353 except that %g, %u, and %U do not currently support additional
354 SUFFIX characters following %O as they would following, for
356 %I Substitute any of -iprefix (made from GCC_EXEC_PREFIX), -isysroot
357 (made from TARGET_SYSTEM_ROOT), -isystem (made from COMPILER_PATH
358 and -B options) and -imultilib as necessary.
359 %s current argument is the name of a library or startup file of some sort.
360 Search for that file in a standard list of directories
361 and substitute the full name found.
362 %eSTR Print STR as an error message. STR is terminated by a newline.
363 Use this when inconsistent options are detected.
364 %nSTR Print STR as a notice. STR is terminated by a newline.
365 %x{OPTION} Accumulate an option for %X.
366 %X Output the accumulated linker options specified by compilations.
367 %Y Output the accumulated assembler options specified by compilations.
368 %Z Output the accumulated preprocessor options specified by compilations.
369 %a process ASM_SPEC as a spec.
370 This allows config.h to specify part of the spec for running as.
371 %A process ASM_FINAL_SPEC as a spec. A capital A is actually
372 used here. This can be used to run a post-processor after the
373 assembler has done its job.
374 %D Dump out a -L option for each directory in startfile_prefixes.
375 If multilib_dir is set, extra entries are generated with it affixed.
376 %l process LINK_SPEC as a spec.
377 %L process LIB_SPEC as a spec.
378 %G process LIBGCC_SPEC as a spec.
379 %R Output the concatenation of target_system_root and
380 target_sysroot_suffix.
381 %S process STARTFILE_SPEC as a spec. A capital S is actually used here.
382 %E process ENDFILE_SPEC as a spec. A capital E is actually used here.
383 %C process CPP_SPEC as a spec.
384 %1 process CC1_SPEC as a spec.
385 %2 process CC1PLUS_SPEC as a spec.
386 %* substitute the variable part of a matched option. (See below.)
387 Note that each comma in the substituted string is replaced by
389 %<S remove all occurrences of -S from the command line.
390 Note - this command is position dependent. % commands in the
391 spec string before this one will see -S, % commands in the
392 spec string after this one will not.
393 %>S Similar to "%<S", but keep it in the GCC command line.
394 %<S* remove all occurrences of all switches beginning with -S from the
397 Call the named function FUNCTION, passing it ARGS. ARGS is
398 first processed as a nested spec string, then split into an
399 argument vector in the usual fashion. The function returns
400 a string which is processed as if it had appeared literally
401 as part of the current spec.
402 %{S} substitutes the -S switch, if that switch was given to GCC.
403 If that switch was not specified, this substitutes nothing.
404 Here S is a metasyntactic variable.
405 %{S*} substitutes all the switches specified to GCC whose names start
406 with -S. This is used for -o, -I, etc; switches that take
407 arguments. GCC considers `-o foo' as being one switch whose
408 name starts with `o'. %{o*} would substitute this text,
409 including the space; thus, two arguments would be generated.
410 %{S*&T*} likewise, but preserve order of S and T options (the order
411 of S and T in the spec is not significant). Can be any number
412 of ampersand-separated variables; for each the wild card is
413 optional. Useful for CPP as %{D*&U*&A*}.
415 %{S:X} substitutes X, if the -S switch was given to GCC.
416 %{!S:X} substitutes X, if the -S switch was NOT given to GCC.
417 %{S*:X} substitutes X if one or more switches whose names start
418 with -S was given to GCC. Normally X is substituted only
419 once, no matter how many such switches appeared. However,
420 if %* appears somewhere in X, then X will be substituted
421 once for each matching switch, with the %* replaced by the
422 part of that switch that matched the '*'.
423 %{.S:X} substitutes X, if processing a file with suffix S.
424 %{!.S:X} substitutes X, if NOT processing a file with suffix S.
425 %{,S:X} substitutes X, if processing a file which will use spec S.
426 %{!,S:X} substitutes X, if NOT processing a file which will use spec S.
428 %{S|T:X} substitutes X if either -S or -T was given to GCC. This may be
429 combined with '!', '.', ',', and '*' as above binding stronger
431 If %* appears in X, all of the alternatives must be starred, and
432 only the first matching alternative is substituted.
433 %{S:X; if S was given to GCC, substitutes X;
434 T:Y; else if T was given to GCC, substitutes Y;
435 :D} else substitutes D. There can be as many clauses as you need.
436 This may be combined with '.', '!', ',', '|', and '*' as above.
438 %(Spec) processes a specification defined in a specs file as *Spec:
439 %[Spec] as above, but put __ around -D arguments
441 The conditional text X in a %{S:X} or similar construct may contain
442 other nested % constructs or spaces, or even newlines. They are
443 processed as usual, as described above. Trailing white space in X is
444 ignored. White space may also appear anywhere on the left side of the
445 colon in these constructs, except between . or * and the corresponding
448 The -O, -f, -m, and -W switches are handled specifically in these
449 constructs. If another value of -O or the negated form of a -f, -m, or
450 -W switch is found later in the command line, the earlier switch
451 value is ignored, except with {S*} where S is just one letter; this
452 passes all matching options.
454 The character | at the beginning of the predicate text is used to indicate
455 that a command should be piped to the following command, but only if -pipe
458 Note that it is built into GCC which switches take arguments and which
459 do not. You might think it would be useful to generalize this to
460 allow each compiler's spec to say which switches take arguments. But
461 this cannot be done in a consistent fashion. GCC cannot even decide
462 which input files have been specified without knowing which switches
463 take arguments, and it must know which input files to compile in order
464 to tell which compilers to run.
466 GCC also knows implicitly that arguments starting in `-l' are to be
467 treated as compiler output files, and passed to the linker in their
468 proper position among the other output files. */
470 /* Define the macros used for specs %a, %l, %L, %S, %C, %1. */
472 /* config.h can define ASM_SPEC to provide extra args to the assembler
473 or extra switch-translations. */
478 /* config.h can define ASM_FINAL_SPEC to run a post processor after
479 the assembler has run. */
480 #ifndef ASM_FINAL_SPEC
481 #define ASM_FINAL_SPEC ""
484 /* config.h can define CPP_SPEC to provide extra args to the C preprocessor
485 or extra switch-translations. */
490 /* config.h can define CC1_SPEC to provide extra args to cc1 and cc1plus
491 or extra switch-translations. */
496 /* config.h can define CC1PLUS_SPEC to provide extra args to cc1plus
497 or extra switch-translations. */
499 #define CC1PLUS_SPEC ""
502 /* config.h can define LINK_SPEC to provide extra args to the linker
503 or extra switch-translations. */
508 /* config.h can define LIB_SPEC to override the default libraries. */
510 #define LIB_SPEC "%{!shared:%{g*:-lg} %{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p}}"
515 /* XXX: valid only for GNU ld */
516 /* XXX: should exactly match hooks provided by libmudflap.a */
517 #define MFWRAP_SPEC " %{static: %{fmudflap|fmudflapth: \
518 --wrap=malloc --wrap=free --wrap=calloc --wrap=realloc\
519 --wrap=mmap --wrap=munmap --wrap=alloca\
520 } %{fmudflapth: --wrap=pthread_create\
521 }} %{fmudflap|fmudflapth: --wrap=main}"
524 #define MFLIB_SPEC "%{fmudflap|fmudflapth: -export-dynamic}"
527 /* When using -fsplit-stack we need to wrap pthread_create, in order
528 to initialize the stack guard. We always use wrapping, rather than
529 shared library ordering, and we keep the wrapper function in
530 libgcc. This is not yet a real spec, though it could become one;
531 it is currently just stuffed into LINK_SPEC. FIXME: This wrapping
532 only works with GNU ld and gold. FIXME: This is incompatible with
533 -fmudflap when linking statically, which wants to do its own
535 #define STACK_SPLIT_SPEC " %{fsplit-stack: --wrap=pthread_create}"
537 /* config.h can define LIBGCC_SPEC to override how and when libgcc.a is
540 #if defined(REAL_LIBGCC_SPEC)
541 #define LIBGCC_SPEC REAL_LIBGCC_SPEC
542 #elif defined(LINK_LIBGCC_SPECIAL_1)
543 /* Have gcc do the search for libgcc.a. */
544 #define LIBGCC_SPEC "libgcc.a%s"
546 #define LIBGCC_SPEC "-lgcc"
550 /* config.h can define STARTFILE_SPEC to override the default crt0 files. */
551 #ifndef STARTFILE_SPEC
552 #define STARTFILE_SPEC \
553 "%{!shared:%{pg:gcrt0%O%s}%{!pg:%{p:mcrt0%O%s}%{!p:crt0%O%s}}}"
556 /* config.h can define ENDFILE_SPEC to override the default crtn files. */
558 #define ENDFILE_SPEC ""
562 #define LINKER_NAME "collect2"
565 #ifdef HAVE_AS_DEBUG_PREFIX_MAP
566 #define ASM_MAP " %{fdebug-prefix-map=*:--debug-prefix-map %*}"
571 /* Define ASM_DEBUG_SPEC to be a spec suitable for translating '-g'
573 #ifndef ASM_DEBUG_SPEC
574 # if defined(DBX_DEBUGGING_INFO) && defined(DWARF2_DEBUGGING_INFO) \
575 && defined(HAVE_AS_GDWARF2_DEBUG_FLAG) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
576 # define ASM_DEBUG_SPEC \
577 (PREFERRED_DEBUGGING_TYPE == DBX_DEBUG \
578 ? "%{!g0:%{gdwarf-2*:--gdwarf2}%{!gdwarf-2*:%{g*:--gstabs}}}" ASM_MAP \
579 : "%{!g0:%{gstabs*:--gstabs}%{!gstabs*:%{g*:--gdwarf2}}}" ASM_MAP)
581 # if defined(DBX_DEBUGGING_INFO) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
582 # define ASM_DEBUG_SPEC "%{g*:%{!g0:--gstabs}}" ASM_MAP
584 # if defined(DWARF2_DEBUGGING_INFO) && defined(HAVE_AS_GDWARF2_DEBUG_FLAG)
585 # define ASM_DEBUG_SPEC "%{g*:%{!g0:--gdwarf2}}" ASM_MAP
589 #ifndef ASM_DEBUG_SPEC
590 # define ASM_DEBUG_SPEC ""
593 /* Here is the spec for running the linker, after compiling all files. */
595 /* This is overridable by the target in case they need to specify the
596 -lgcc and -lc order specially, yet not require them to override all
597 of LINK_COMMAND_SPEC. */
598 #ifndef LINK_GCC_C_SEQUENCE_SPEC
599 #define LINK_GCC_C_SEQUENCE_SPEC "%G %L %G"
602 #ifndef LINK_SSP_SPEC
603 #ifdef TARGET_LIBC_PROVIDES_SSP
604 #define LINK_SSP_SPEC "%{fstack-protector:}"
606 #define LINK_SSP_SPEC "%{fstack-protector|fstack-protector-all:-lssp_nonshared -lssp}"
610 #ifndef LINK_PIE_SPEC
612 #define LINK_PIE_SPEC "%{pie:-pie} "
614 #define LINK_PIE_SPEC "%{pie:} "
618 #ifndef LINK_BUILDID_SPEC
619 # if defined(HAVE_LD_BUILDID) && defined(ENABLE_LD_BUILDID)
620 # define LINK_BUILDID_SPEC "%{!r:--build-id} "
624 /* Conditional to test whether the LTO plugin is used or not.
625 FIXME: For slim LTO we will need to enable plugin unconditionally. This
626 still cause problems with PLUGIN_LD != LD and when plugin is built but
627 not useable. For GCC 4.6 we don't support slim LTO and thus we can enable
628 plugin only when LTO is enabled. We still honor explicit
629 -fuse-linker-plugin if the linker used understands -plugin. */
631 /* The linker has some plugin support. */
632 #if HAVE_LTO_PLUGIN > 0
633 /* The linker used has full plugin support, use LTO plugin by default. */
634 #if HAVE_LTO_PLUGIN == 2
635 #define PLUGIN_COND "!fno-use-linker-plugin:%{flto|flto=*|fuse-linker-plugin"
636 #define PLUGIN_COND_CLOSE "}"
638 /* The linker used has limited plugin support, use LTO plugin with explicit
639 -fuse-linker-plugin. */
640 #define PLUGIN_COND "fuse-linker-plugin"
641 #define PLUGIN_COND_CLOSE ""
643 #define LINK_PLUGIN_SPEC \
645 -plugin %(linker_plugin_file) \
646 -plugin-opt=%(lto_wrapper) \
647 -plugin-opt=-fresolution=%u.res \
648 %{!nostdlib:%{!nodefaultlibs:%:pass-through-libs(%(link_gcc_c_sequence))}} \
651 /* The linker used doesn't support -plugin, reject -fuse-linker-plugin. */
652 #define LINK_PLUGIN_SPEC "%{fuse-linker-plugin:\
653 %e-fuse-linker-plugin is not supported in this configuration}"
657 /* -u* was put back because both BSD and SysV seem to support it. */
658 /* %{static:} simply prevents an error message if the target machine
659 doesn't handle -static. */
660 /* We want %{T*} after %{L*} and %D so that it can be used to specify linker
661 scripts which exist in user specified directories, or in standard
663 /* We pass any -flto flags on to the linker, which is expected
664 to understand them. In practice, this means it had better be collect2. */
665 /* %{e*} includes -export-dynamic; see comment in common.opt. */
666 #ifndef LINK_COMMAND_SPEC
667 #define LINK_COMMAND_SPEC "\
668 %{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:\
671 "%{flto|flto=*:%<fcompare-debug*} \
672 %{flto} %{flto=*} %l " LINK_PIE_SPEC \
673 "%X %{o*} %{e*} %{N} %{n} %{r}\
674 %{s} %{t} %{u*} %{z} %{Z} %{!nostdlib:%{!nostartfiles:%S}}\
675 %{static:} %{L*} %(mfwrap) %(link_libgcc) %o\
676 %{fopenmp|ftree-parallelize-loops=*:%:include(libgomp.spec)%(link_gomp)}\
677 %(mflib) " STACK_SPLIT_SPEC "\
678 %{fprofile-arcs|fprofile-generate*|coverage:-lgcov}\
679 %{!nostdlib:%{!nodefaultlibs:%(link_ssp) %(link_gcc_c_sequence)}}\
680 %{!nostdlib:%{!nostartfiles:%E}} %{T*} }}}}}}"
683 #ifndef LINK_LIBGCC_SPEC
684 /* Generate -L options for startfile prefix list. */
685 # define LINK_LIBGCC_SPEC "%D"
688 #ifndef STARTFILE_PREFIX_SPEC
689 # define STARTFILE_PREFIX_SPEC ""
693 # define SYSROOT_SPEC "--sysroot=%R"
696 #ifndef SYSROOT_SUFFIX_SPEC
697 # define SYSROOT_SUFFIX_SPEC ""
700 #ifndef SYSROOT_HEADERS_SUFFIX_SPEC
701 # define SYSROOT_HEADERS_SUFFIX_SPEC ""
704 static const char *asm_debug
;
705 static const char *cpp_spec
= CPP_SPEC
;
706 static const char *cc1_spec
= CC1_SPEC
;
707 static const char *cc1plus_spec
= CC1PLUS_SPEC
;
708 static const char *link_gcc_c_sequence_spec
= LINK_GCC_C_SEQUENCE_SPEC
;
709 static const char *link_ssp_spec
= LINK_SSP_SPEC
;
710 static const char *asm_spec
= ASM_SPEC
;
711 static const char *asm_final_spec
= ASM_FINAL_SPEC
;
712 static const char *link_spec
= LINK_SPEC
;
713 static const char *lib_spec
= LIB_SPEC
;
714 static const char *mfwrap_spec
= MFWRAP_SPEC
;
715 static const char *mflib_spec
= MFLIB_SPEC
;
716 static const char *link_gomp_spec
= "";
717 static const char *libgcc_spec
= LIBGCC_SPEC
;
718 static const char *endfile_spec
= ENDFILE_SPEC
;
719 static const char *startfile_spec
= STARTFILE_SPEC
;
720 static const char *linker_name_spec
= LINKER_NAME
;
721 static const char *linker_plugin_file_spec
= "";
722 static const char *lto_wrapper_spec
= "";
723 static const char *lto_gcc_spec
= "";
724 static const char *link_command_spec
= LINK_COMMAND_SPEC
;
725 static const char *link_libgcc_spec
= LINK_LIBGCC_SPEC
;
726 static const char *startfile_prefix_spec
= STARTFILE_PREFIX_SPEC
;
727 static const char *sysroot_spec
= SYSROOT_SPEC
;
728 static const char *sysroot_suffix_spec
= SYSROOT_SUFFIX_SPEC
;
729 static const char *sysroot_hdrs_suffix_spec
= SYSROOT_HEADERS_SUFFIX_SPEC
;
731 /* Standard options to cpp, cc1, and as, to reduce duplication in specs.
732 There should be no need to override these in target dependent files,
733 but we need to copy them to the specs file so that newer versions
734 of the GCC driver can correctly drive older tool chains with the
735 appropriate -B options. */
737 /* When cpplib handles traditional preprocessing, get rid of this, and
738 call cc1 (or cc1obj in objc/lang-specs.h) from the main specs so
739 that we default the front end language better. */
740 static const char *trad_capable_cpp
=
741 "cc1 -E %{traditional|traditional-cpp:-traditional-cpp}";
743 /* We don't wrap .d files in %W{} since a missing .d file, and
744 therefore no dependency entry, confuses make into thinking a .o
745 file that happens to exist is up-to-date. */
746 static const char *cpp_unique_options
=
747 "%{!Q:-quiet} %{nostdinc*} %{C} %{CC} %{v} %{I*&F*} %{P} %I\
748 %{MD:-MD %{!o:%b.d}%{o*:%.d%*}}\
749 %{MMD:-MMD %{!o:%b.d}%{o*:%.d%*}}\
750 %{M} %{MM} %{MF*} %{MG} %{MP} %{MQ*} %{MT*}\
751 %{!E:%{!M:%{!MM:%{!MT:%{!MQ:%{MD|MMD:%{o*:-MQ %*}}}}}}}\
752 %{remap} %{g3|ggdb3|gstabs3|gcoff3|gxcoff3|gvms3:-dD}\
753 %{!iplugindir*:%{fplugin*:%:find-plugindir()}}\
754 %{H} %C %{D*&U*&A*} %{i*} %Z %i\
755 %{fmudflap:-D_MUDFLAP -include mf-runtime.h}\
756 %{fmudflapth:-D_MUDFLAP -D_MUDFLAPTH -include mf-runtime.h}\
759 /* This contains cpp options which are common with cc1_options and are passed
760 only when preprocessing only to avoid duplication. We pass the cc1 spec
761 options to the preprocessor so that it the cc1 spec may manipulate
762 options used to set target flags. Those special target flags settings may
763 in turn cause preprocessor symbols to be defined specially. */
764 static const char *cpp_options
=
765 "%(cpp_unique_options) %1 %{m*} %{std*&ansi&trigraphs} %{W*&pedantic*} %{w}\
766 %{f*} %{g*:%{!g0:%{g*} %{!fno-working-directory:-fworking-directory}}} %{O*}\
767 %{undef} %{save-temps*:-fpch-preprocess}";
769 /* This contains cpp options which are not passed when the preprocessor
770 output will be used by another program. */
771 static const char *cpp_debug_options
= "%{d*}";
773 /* NB: This is shared amongst all front-ends, except for Ada. */
774 static const char *cc1_options
=
775 "%{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\
776 %{!iplugindir*:%{fplugin*:%:find-plugindir()}}\
777 %1 %{!Q:-quiet} %{!dumpbase:-dumpbase %B} %{d*} %{m*} %{aux-info*}\
778 %{fcompare-debug-second:%:compare-debug-auxbase-opt(%b)} \
779 %{!fcompare-debug-second:%{c|S:%{o*:-auxbase-strip %*}%{!o*:-auxbase %b}}}%{!c:%{!S:-auxbase %b}} \
780 %{g*} %{O*} %{W*&pedantic*} %{w} %{std*&ansi&trigraphs}\
781 %{v:-version} %{pg:-p} %{p} %{f*} %{undef}\
782 %{Qn:-fno-ident} %{Qy:} %{-help:--help}\
783 %{-target-help:--target-help}\
784 %{-version:--version}\
785 %{-help=*:--help=%*}\
786 %{!fsyntax-only:%{S:%W{o*}%{!o*:-o %b.s}}}\
787 %{fsyntax-only:-o %j} %{-param*}\
788 %{fmudflap|fmudflapth:-fno-builtin -fno-merge-constants}\
789 %{coverage:-fprofile-arcs -ftest-coverage}";
791 static const char *asm_options
=
792 "%{-target-help:%:print-asm-header()} "
794 /* If GNU AS is used, then convert -w (no warnings), -I, and -v
795 to the assembler equivalents. */
796 "%{v} %{w:-W} %{I*} "
798 "%a %Y %{c:%W{o*}%{!o*:-o %w%b%O}}%{!c:-o %d%w%u%O}";
800 static const char *invoke_as
=
801 #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT
803 %{fcompare-debug=*|fdump-final-insns=*:%:compare-debug-dump-opt()}\
804 %{!S:-o %|.s |\n as %(asm_options) %|.s %A }\
808 %{fcompare-debug=*|fdump-final-insns=*:%:compare-debug-dump-opt()}\
809 %{!S:-o %|.s |\n as %(asm_options) %m.s %A }\
813 /* Some compilers have limits on line lengths, and the multilib_select
814 and/or multilib_matches strings can be very long, so we build them at
816 static struct obstack multilib_obstack
;
817 static const char *multilib_select
;
818 static const char *multilib_matches
;
819 static const char *multilib_defaults
;
820 static const char *multilib_exclusions
;
822 /* Check whether a particular argument is a default argument. */
824 #ifndef MULTILIB_DEFAULTS
825 #define MULTILIB_DEFAULTS { "" }
828 static const char *const multilib_defaults_raw
[] = MULTILIB_DEFAULTS
;
830 #ifndef DRIVER_SELF_SPECS
831 #define DRIVER_SELF_SPECS ""
834 /* Adding -fopenmp should imply pthreads. This is particularly important
835 for targets that use different start files and suchlike. */
836 #ifndef GOMP_SELF_SPECS
837 #define GOMP_SELF_SPECS "%{fopenmp|ftree-parallelize-loops=*: -pthread}"
840 static const char *const driver_self_specs
[] = {
841 "%{fdump-final-insns:-fdump-final-insns=.} %<fdump-final-insns",
842 DRIVER_SELF_SPECS
, CONFIGURE_SPECS
, GOMP_SELF_SPECS
845 #ifndef OPTION_DEFAULT_SPECS
846 #define OPTION_DEFAULT_SPECS { "", "" }
855 static const struct default_spec
856 option_default_specs
[] = { OPTION_DEFAULT_SPECS
};
860 struct user_specs
*next
;
861 const char *filename
;
864 static struct user_specs
*user_specs_head
, *user_specs_tail
;
867 /* Record the mapping from file suffixes for compilation specs. */
871 const char *suffix
; /* Use this compiler for input files
872 whose names end in this suffix. */
874 const char *spec
; /* To use this compiler, run this spec. */
876 const char *cpp_spec
; /* If non-NULL, substitute this spec
877 for `%C', rather than the usual
879 const int combinable
; /* If nonzero, compiler can deal with
880 multiple source files at once (IMA). */
881 const int needs_preprocessing
; /* If nonzero, source files need to
882 be run through a preprocessor. */
885 /* Pointer to a vector of `struct compiler' that gives the spec for
886 compiling a file, based on its suffix.
887 A file that does not end in any of these suffixes will be passed
888 unchanged to the loader and nothing else will be done to it.
890 An entry containing two 0s is used to terminate the vector.
892 If multiple entries match a file, the last matching one is used. */
894 static struct compiler
*compilers
;
896 /* Number of entries in `compilers', not counting the null terminator. */
898 static int n_compilers
;
900 /* The default list of file name suffixes and their compilation specs. */
902 static const struct compiler default_compilers
[] =
904 /* Add lists of suffixes of known languages here. If those languages
905 were not present when we built the driver, we will hit these copies
906 and be given a more meaningful error than "file not used since
907 linking is not done". */
908 {".m", "#Objective-C", 0, 0, 0}, {".mi", "#Objective-C", 0, 0, 0},
909 {".mm", "#Objective-C++", 0, 0, 0}, {".M", "#Objective-C++", 0, 0, 0},
910 {".mii", "#Objective-C++", 0, 0, 0},
911 {".cc", "#C++", 0, 0, 0}, {".cxx", "#C++", 0, 0, 0},
912 {".cpp", "#C++", 0, 0, 0}, {".cp", "#C++", 0, 0, 0},
913 {".c++", "#C++", 0, 0, 0}, {".C", "#C++", 0, 0, 0},
914 {".CPP", "#C++", 0, 0, 0}, {".ii", "#C++", 0, 0, 0},
915 {".ads", "#Ada", 0, 0, 0}, {".adb", "#Ada", 0, 0, 0},
916 {".f", "#Fortran", 0, 0, 0}, {".F", "#Fortran", 0, 0, 0},
917 {".for", "#Fortran", 0, 0, 0}, {".FOR", "#Fortran", 0, 0, 0},
918 {".ftn", "#Fortran", 0, 0, 0}, {".FTN", "#Fortran", 0, 0, 0},
919 {".fpp", "#Fortran", 0, 0, 0}, {".FPP", "#Fortran", 0, 0, 0},
920 {".f90", "#Fortran", 0, 0, 0}, {".F90", "#Fortran", 0, 0, 0},
921 {".f95", "#Fortran", 0, 0, 0}, {".F95", "#Fortran", 0, 0, 0},
922 {".f03", "#Fortran", 0, 0, 0}, {".F03", "#Fortran", 0, 0, 0},
923 {".f08", "#Fortran", 0, 0, 0}, {".F08", "#Fortran", 0, 0, 0},
924 {".r", "#Ratfor", 0, 0, 0},
925 {".p", "#Pascal", 0, 0, 0}, {".pas", "#Pascal", 0, 0, 0},
926 {".java", "#Java", 0, 0, 0}, {".class", "#Java", 0, 0, 0},
927 {".zip", "#Java", 0, 0, 0}, {".jar", "#Java", 0, 0, 0},
928 {".go", "#Go", 0, 1, 0},
929 /* Next come the entries for C. */
930 {".c", "@c", 0, 0, 1},
932 /* cc1 has an integrated ISO C preprocessor. We should invoke the
933 external preprocessor if -save-temps is given. */
934 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\
937 %eGNU C no longer supports -traditional without -E}\
938 %{save-temps*|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
939 %(cpp_options) -o %{save-temps*:%b.i} %{!save-temps*:%g.i} \n\
940 cc1 -fpreprocessed %{save-temps*:%b.i} %{!save-temps*:%g.i} \
942 %{!save-temps*:%{!traditional-cpp:%{!no-integrated-cpp:\
943 cc1 %(cpp_unique_options) %(cc1_options)}}}\
944 %{!fsyntax-only:%(invoke_as)}}}}", 0, 0, 1},
946 "%{!E:%e-E or -x required when input is from standard input}\
947 %(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)", 0, 0, 0},
948 {".h", "@c-header", 0, 0, 0},
950 /* cc1 has an integrated ISO C preprocessor. We should invoke the
951 external preprocessor if -save-temps is given. */
952 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\
954 %{save-temps*|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
955 %(cpp_options) -o %{save-temps*:%b.i} %{!save-temps*:%g.i} \n\
956 cc1 -fpreprocessed %{save-temps*:%b.i} %{!save-temps*:%g.i} \
958 %{!fdump-ada-spec*:-o %g.s %{!o*:--output-pch=%i.gch}\
959 %W{o*:--output-pch=%*}}%V}\
960 %{!save-temps*:%{!traditional-cpp:%{!no-integrated-cpp:\
961 cc1 %(cpp_unique_options) %(cc1_options)\
962 %{!fdump-ada-spec*:-o %g.s %{!o*:--output-pch=%i.gch}\
963 %W{o*:--output-pch=%*}}%V}}}}}}", 0, 0, 0},
964 {".i", "@cpp-output", 0, 0, 0},
966 "%{!M:%{!MM:%{!E:cc1 -fpreprocessed %i %(cc1_options) %{!fsyntax-only:%(invoke_as)}}}}", 0, 0, 0},
967 {".s", "@assembler", 0, 0, 0},
969 "%{!M:%{!MM:%{!E:%{!S:as %(asm_debug) %(asm_options) %i %A }}}}", 0, 0, 0},
970 {".sx", "@assembler-with-cpp", 0, 0, 0},
971 {".S", "@assembler-with-cpp", 0, 0, 0},
972 {"@assembler-with-cpp",
973 #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT
974 "%(trad_capable_cpp) -lang-asm %(cpp_options) -fno-directives-only\
975 %{E|M|MM:%(cpp_debug_options)}\
976 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\
977 as %(asm_debug) %(asm_options) %|.s %A }}}}"
979 "%(trad_capable_cpp) -lang-asm %(cpp_options) -fno-directives-only\
980 %{E|M|MM:%(cpp_debug_options)}\
981 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\
982 as %(asm_debug) %(asm_options) %m.s %A }}}}"
987 /* Mark end of table. */
991 /* Number of elements in default_compilers, not counting the terminator. */
993 static const int n_default_compilers
= ARRAY_SIZE (default_compilers
) - 1;
995 typedef char *char_p
; /* For DEF_VEC_P. */
997 DEF_VEC_ALLOC_P(char_p
,heap
);
999 /* A vector of options to give to the linker.
1000 These options are accumulated by %x,
1001 and substituted into the linker command with %X. */
1002 static VEC(char_p
,heap
) *linker_options
;
1004 /* A vector of options to give to the assembler.
1005 These options are accumulated by -Wa,
1006 and substituted into the assembler command with %Y. */
1007 static VEC(char_p
,heap
) *assembler_options
;
1009 /* A vector of options to give to the preprocessor.
1010 These options are accumulated by -Wp,
1011 and substituted into the preprocessor command with %Z. */
1012 static VEC(char_p
,heap
) *preprocessor_options
;
1015 skip_whitespace (char *p
)
1019 /* A fully-blank line is a delimiter in the SPEC file and shouldn't
1020 be considered whitespace. */
1021 if (p
[0] == '\n' && p
[1] == '\n' && p
[2] == '\n')
1023 else if (*p
== '\n' || *p
== ' ' || *p
== '\t')
1037 /* Structures to keep track of prefixes to try when looking for files. */
1041 const char *prefix
; /* String to prepend to the path. */
1042 struct prefix_list
*next
; /* Next in linked list. */
1043 int require_machine_suffix
; /* Don't use without machine_suffix. */
1044 /* 2 means try both machine_suffix and just_machine_suffix. */
1045 int priority
; /* Sort key - priority within list. */
1046 int os_multilib
; /* 1 if OS multilib scheme should be used,
1047 0 for GCC multilib scheme. */
1052 struct prefix_list
*plist
; /* List of prefixes to try */
1053 int max_len
; /* Max length of a prefix in PLIST */
1054 const char *name
; /* Name of this list (used in config stuff) */
1057 /* List of prefixes to try when looking for executables. */
1059 static struct path_prefix exec_prefixes
= { 0, 0, "exec" };
1061 /* List of prefixes to try when looking for startup (crt0) files. */
1063 static struct path_prefix startfile_prefixes
= { 0, 0, "startfile" };
1065 /* List of prefixes to try when looking for include files. */
1067 static struct path_prefix include_prefixes
= { 0, 0, "include" };
1069 /* Suffix to attach to directories searched for commands.
1070 This looks like `MACHINE/VERSION/'. */
1072 static const char *machine_suffix
= 0;
1074 /* Suffix to attach to directories searched for commands.
1075 This is just `MACHINE/'. */
1077 static const char *just_machine_suffix
= 0;
1079 /* Adjusted value of GCC_EXEC_PREFIX envvar. */
1081 static const char *gcc_exec_prefix
;
1083 /* Adjusted value of standard_libexec_prefix. */
1085 static const char *gcc_libexec_prefix
;
1087 /* Default prefixes to attach to command names. */
1089 #ifndef STANDARD_STARTFILE_PREFIX_1
1090 #define STANDARD_STARTFILE_PREFIX_1 "/lib/"
1092 #ifndef STANDARD_STARTFILE_PREFIX_2
1093 #define STANDARD_STARTFILE_PREFIX_2 "/usr/lib/"
1096 #ifdef CROSS_DIRECTORY_STRUCTURE /* Don't use these prefixes for a cross compiler. */
1097 #undef MD_EXEC_PREFIX
1098 #undef MD_STARTFILE_PREFIX
1099 #undef MD_STARTFILE_PREFIX_1
1102 /* If no prefixes defined, use the null string, which will disable them. */
1103 #ifndef MD_EXEC_PREFIX
1104 #define MD_EXEC_PREFIX ""
1106 #ifndef MD_STARTFILE_PREFIX
1107 #define MD_STARTFILE_PREFIX ""
1109 #ifndef MD_STARTFILE_PREFIX_1
1110 #define MD_STARTFILE_PREFIX_1 ""
1113 /* These directories are locations set at configure-time based on the
1114 --prefix option provided to configure. Their initializers are
1115 defined in Makefile.in. These paths are not *directly* used when
1116 gcc_exec_prefix is set because, in that case, we know where the
1117 compiler has been installed, and use paths relative to that
1118 location instead. */
1119 static const char *const standard_exec_prefix
= STANDARD_EXEC_PREFIX
;
1120 static const char *const standard_libexec_prefix
= STANDARD_LIBEXEC_PREFIX
;
1121 static const char *const standard_bindir_prefix
= STANDARD_BINDIR_PREFIX
;
1122 static const char *const standard_startfile_prefix
= STANDARD_STARTFILE_PREFIX
;
1124 /* For native compilers, these are well-known paths containing
1125 components that may be provided by the system. For cross
1126 compilers, these paths are not used. */
1127 static const char *md_exec_prefix
= MD_EXEC_PREFIX
;
1128 static const char *md_startfile_prefix
= MD_STARTFILE_PREFIX
;
1129 static const char *md_startfile_prefix_1
= MD_STARTFILE_PREFIX_1
;
1130 static const char *const standard_startfile_prefix_1
1131 = STANDARD_STARTFILE_PREFIX_1
;
1132 static const char *const standard_startfile_prefix_2
1133 = STANDARD_STARTFILE_PREFIX_2
;
1135 /* A relative path to be used in finding the location of tools
1136 relative to the driver. */
1137 static const char *const tooldir_base_prefix
= TOOLDIR_BASE_PREFIX
;
1139 /* Subdirectory to use for locating libraries. Set by
1140 set_multilib_dir based on the compilation options. */
1142 static const char *multilib_dir
;
1144 /* Subdirectory to use for locating libraries in OS conventions. Set by
1145 set_multilib_dir based on the compilation options. */
1147 static const char *multilib_os_dir
;
1149 /* Structure to keep track of the specs that have been defined so far.
1150 These are accessed using %(specname) or %[specname] in a compiler
1155 /* The following 2 fields must be first */
1156 /* to allow EXTRA_SPECS to be initialized */
1157 const char *name
; /* name of the spec. */
1158 const char *ptr
; /* available ptr if no static pointer */
1160 /* The following fields are not initialized */
1161 /* by EXTRA_SPECS */
1162 const char **ptr_spec
; /* pointer to the spec itself. */
1163 struct spec_list
*next
; /* Next spec in linked list. */
1164 int name_len
; /* length of the name */
1165 int alloc_p
; /* whether string was allocated */
1168 #define INIT_STATIC_SPEC(NAME,PTR) \
1169 { NAME, NULL, PTR, (struct spec_list *) 0, sizeof (NAME) - 1, 0 }
1171 /* List of statically defined specs. */
1172 static struct spec_list static_specs
[] =
1174 INIT_STATIC_SPEC ("asm", &asm_spec
),
1175 INIT_STATIC_SPEC ("asm_debug", &asm_debug
),
1176 INIT_STATIC_SPEC ("asm_final", &asm_final_spec
),
1177 INIT_STATIC_SPEC ("asm_options", &asm_options
),
1178 INIT_STATIC_SPEC ("invoke_as", &invoke_as
),
1179 INIT_STATIC_SPEC ("cpp", &cpp_spec
),
1180 INIT_STATIC_SPEC ("cpp_options", &cpp_options
),
1181 INIT_STATIC_SPEC ("cpp_debug_options", &cpp_debug_options
),
1182 INIT_STATIC_SPEC ("cpp_unique_options", &cpp_unique_options
),
1183 INIT_STATIC_SPEC ("trad_capable_cpp", &trad_capable_cpp
),
1184 INIT_STATIC_SPEC ("cc1", &cc1_spec
),
1185 INIT_STATIC_SPEC ("cc1_options", &cc1_options
),
1186 INIT_STATIC_SPEC ("cc1plus", &cc1plus_spec
),
1187 INIT_STATIC_SPEC ("link_gcc_c_sequence", &link_gcc_c_sequence_spec
),
1188 INIT_STATIC_SPEC ("link_ssp", &link_ssp_spec
),
1189 INIT_STATIC_SPEC ("endfile", &endfile_spec
),
1190 INIT_STATIC_SPEC ("link", &link_spec
),
1191 INIT_STATIC_SPEC ("lib", &lib_spec
),
1192 INIT_STATIC_SPEC ("mfwrap", &mfwrap_spec
),
1193 INIT_STATIC_SPEC ("mflib", &mflib_spec
),
1194 INIT_STATIC_SPEC ("link_gomp", &link_gomp_spec
),
1195 INIT_STATIC_SPEC ("libgcc", &libgcc_spec
),
1196 INIT_STATIC_SPEC ("startfile", &startfile_spec
),
1197 INIT_STATIC_SPEC ("cross_compile", &cross_compile
),
1198 INIT_STATIC_SPEC ("version", &compiler_version
),
1199 INIT_STATIC_SPEC ("multilib", &multilib_select
),
1200 INIT_STATIC_SPEC ("multilib_defaults", &multilib_defaults
),
1201 INIT_STATIC_SPEC ("multilib_extra", &multilib_extra
),
1202 INIT_STATIC_SPEC ("multilib_matches", &multilib_matches
),
1203 INIT_STATIC_SPEC ("multilib_exclusions", &multilib_exclusions
),
1204 INIT_STATIC_SPEC ("multilib_options", &multilib_options
),
1205 INIT_STATIC_SPEC ("linker", &linker_name_spec
),
1206 INIT_STATIC_SPEC ("linker_plugin_file", &linker_plugin_file_spec
),
1207 INIT_STATIC_SPEC ("lto_wrapper", <o_wrapper_spec
),
1208 INIT_STATIC_SPEC ("lto_gcc", <o_gcc_spec
),
1209 INIT_STATIC_SPEC ("link_libgcc", &link_libgcc_spec
),
1210 INIT_STATIC_SPEC ("md_exec_prefix", &md_exec_prefix
),
1211 INIT_STATIC_SPEC ("md_startfile_prefix", &md_startfile_prefix
),
1212 INIT_STATIC_SPEC ("md_startfile_prefix_1", &md_startfile_prefix_1
),
1213 INIT_STATIC_SPEC ("startfile_prefix_spec", &startfile_prefix_spec
),
1214 INIT_STATIC_SPEC ("sysroot_spec", &sysroot_spec
),
1215 INIT_STATIC_SPEC ("sysroot_suffix_spec", &sysroot_suffix_spec
),
1216 INIT_STATIC_SPEC ("sysroot_hdrs_suffix_spec", &sysroot_hdrs_suffix_spec
),
1219 #ifdef EXTRA_SPECS /* additional specs needed */
1220 /* Structure to keep track of just the first two args of a spec_list.
1221 That is all that the EXTRA_SPECS macro gives us. */
1224 const char *const name
;
1225 const char *const ptr
;
1228 static const struct spec_list_1 extra_specs_1
[] = { EXTRA_SPECS
};
1229 static struct spec_list
*extra_specs
= (struct spec_list
*) 0;
1232 /* List of dynamically allocates specs that have been defined so far. */
1234 static struct spec_list
*specs
= (struct spec_list
*) 0;
1236 /* List of static spec functions. */
1238 static const struct spec_function static_spec_functions
[] =
1240 { "getenv", getenv_spec_function
},
1241 { "if-exists", if_exists_spec_function
},
1242 { "if-exists-else", if_exists_else_spec_function
},
1243 { "replace-outfile", replace_outfile_spec_function
},
1244 { "remove-outfile", remove_outfile_spec_function
},
1245 { "version-compare", version_compare_spec_function
},
1246 { "include", include_spec_function
},
1247 { "find-file", find_file_spec_function
},
1248 { "find-plugindir", find_plugindir_spec_function
},
1249 { "print-asm-header", print_asm_header_spec_function
},
1250 { "compare-debug-dump-opt", compare_debug_dump_opt_spec_function
},
1251 { "compare-debug-self-opt", compare_debug_self_opt_spec_function
},
1252 { "compare-debug-auxbase-opt", compare_debug_auxbase_opt_spec_function
},
1253 { "pass-through-libs", pass_through_libs_spec_func
},
1254 #ifdef EXTRA_SPEC_FUNCTIONS
1255 EXTRA_SPEC_FUNCTIONS
1260 static int processing_spec_function
;
1262 /* Add appropriate libgcc specs to OBSTACK, taking into account
1263 various permutations of -shared-libgcc, -shared, and such. */
1265 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
1267 #ifndef USE_LD_AS_NEEDED
1268 #define USE_LD_AS_NEEDED 0
1272 init_gcc_specs (struct obstack
*obstack
, const char *shared_name
,
1273 const char *static_name
, const char *eh_name
)
1277 buf
= concat ("%{static|static-libgcc:", static_name
, " ", eh_name
, "}"
1278 "%{!static:%{!static-libgcc:"
1279 #if USE_LD_AS_NEEDED
1280 "%{!shared-libgcc:",
1281 static_name
, " --as-needed ", shared_name
, " --no-as-needed"
1284 shared_name
, "%{!shared: ", static_name
, "}"
1288 "%{!shared-libgcc:", static_name
, " ", eh_name
, "}"
1289 "%{shared-libgcc:", shared_name
, " ", static_name
, "}"
1293 "%{shared-libgcc:", shared_name
, "}"
1294 "%{!shared-libgcc:", static_name
, "}"
1297 "%{shared:", shared_name
, "}"
1302 obstack_grow (obstack
, buf
, strlen (buf
));
1305 #endif /* ENABLE_SHARED_LIBGCC */
1307 /* Initialize the specs lookup routines. */
1312 struct spec_list
*next
= (struct spec_list
*) 0;
1313 struct spec_list
*sl
= (struct spec_list
*) 0;
1317 return; /* Already initialized. */
1320 fnotice (stderr
, "Using built-in specs.\n");
1323 extra_specs
= XCNEWVEC (struct spec_list
, ARRAY_SIZE (extra_specs_1
));
1325 for (i
= ARRAY_SIZE (extra_specs_1
) - 1; i
>= 0; i
--)
1327 sl
= &extra_specs
[i
];
1328 sl
->name
= extra_specs_1
[i
].name
;
1329 sl
->ptr
= extra_specs_1
[i
].ptr
;
1331 sl
->name_len
= strlen (sl
->name
);
1332 sl
->ptr_spec
= &sl
->ptr
;
1337 for (i
= ARRAY_SIZE (static_specs
) - 1; i
>= 0; i
--)
1339 sl
= &static_specs
[i
];
1344 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
1345 /* ??? If neither -shared-libgcc nor --static-libgcc was
1346 seen, then we should be making an educated guess. Some proposed
1347 heuristics for ELF include:
1349 (1) If "-Wl,--export-dynamic", then it's a fair bet that the
1350 program will be doing dynamic loading, which will likely
1351 need the shared libgcc.
1353 (2) If "-ldl", then it's also a fair bet that we're doing
1356 (3) For each ET_DYN we're linking against (either through -lfoo
1357 or /some/path/foo.so), check to see whether it or one of
1358 its dependencies depends on a shared libgcc.
1362 If the runtime is fixed to look for program headers instead
1363 of calling __register_frame_info at all, for each object,
1364 use the shared libgcc if any EH symbol referenced.
1366 If crtstuff is fixed to not invoke __register_frame_info
1367 automatically, for each object, use the shared libgcc if
1368 any non-empty unwind section found.
1370 Doing any of this probably requires invoking an external program to
1371 do the actual object file scanning. */
1373 const char *p
= libgcc_spec
;
1376 /* Transform the extant libgcc_spec into one that uses the shared libgcc
1377 when given the proper command line arguments. */
1380 if (in_sep
&& *p
== '-' && strncmp (p
, "-lgcc", 5) == 0)
1382 init_gcc_specs (&obstack
,
1384 #ifdef USE_LIBUNWIND_EXCEPTIONS
1390 #ifdef USE_LIBUNWIND_EXCEPTIONS
1391 # ifdef HAVE_LD_STATIC_DYNAMIC
1392 " %{!static:" LD_STATIC_OPTION
"} -lunwind"
1393 " %{!static:" LD_DYNAMIC_OPTION
"}"
1403 else if (in_sep
&& *p
== 'l' && strncmp (p
, "libgcc.a%s", 10) == 0)
1405 /* Ug. We don't know shared library extensions. Hope that
1406 systems that use this form don't do shared libraries. */
1407 init_gcc_specs (&obstack
,
1411 #ifdef USE_LIBUNWIND_EXCEPTIONS
1420 obstack_1grow (&obstack
, *p
);
1421 in_sep
= (*p
== ' ');
1426 obstack_1grow (&obstack
, '\0');
1427 libgcc_spec
= XOBFINISH (&obstack
, const char *);
1430 #ifdef USE_AS_TRADITIONAL_FORMAT
1431 /* Prepend "--traditional-format" to whatever asm_spec we had before. */
1433 static const char tf
[] = "--traditional-format ";
1434 obstack_grow (&obstack
, tf
, sizeof(tf
) - 1);
1435 obstack_grow0 (&obstack
, asm_spec
, strlen (asm_spec
));
1436 asm_spec
= XOBFINISH (&obstack
, const char *);
1440 #if defined LINK_EH_SPEC || defined LINK_BUILDID_SPEC
1441 # ifdef LINK_BUILDID_SPEC
1442 /* Prepend LINK_BUILDID_SPEC to whatever link_spec we had before. */
1443 obstack_grow (&obstack
, LINK_BUILDID_SPEC
, sizeof(LINK_BUILDID_SPEC
) - 1);
1445 # ifdef LINK_EH_SPEC
1446 /* Prepend LINK_EH_SPEC to whatever link_spec we had before. */
1447 obstack_grow (&obstack
, LINK_EH_SPEC
, sizeof(LINK_EH_SPEC
) - 1);
1449 obstack_grow0 (&obstack
, link_spec
, strlen (link_spec
));
1450 link_spec
= XOBFINISH (&obstack
, const char *);
1456 /* Change the value of spec NAME to SPEC. If SPEC is empty, then the spec is
1457 removed; If the spec starts with a + then SPEC is added to the end of the
1461 set_spec (const char *name
, const char *spec
)
1463 struct spec_list
*sl
;
1464 const char *old_spec
;
1465 int name_len
= strlen (name
);
1468 /* If this is the first call, initialize the statically allocated specs. */
1471 struct spec_list
*next
= (struct spec_list
*) 0;
1472 for (i
= ARRAY_SIZE (static_specs
) - 1; i
>= 0; i
--)
1474 sl
= &static_specs
[i
];
1481 /* See if the spec already exists. */
1482 for (sl
= specs
; sl
; sl
= sl
->next
)
1483 if (name_len
== sl
->name_len
&& !strcmp (sl
->name
, name
))
1488 /* Not found - make it. */
1489 sl
= XNEW (struct spec_list
);
1490 sl
->name
= xstrdup (name
);
1491 sl
->name_len
= name_len
;
1492 sl
->ptr_spec
= &sl
->ptr
;
1494 *(sl
->ptr_spec
) = "";
1499 old_spec
= *(sl
->ptr_spec
);
1500 *(sl
->ptr_spec
) = ((spec
[0] == '+' && ISSPACE ((unsigned char)spec
[1]))
1501 ? concat (old_spec
, spec
+ 1, NULL
)
1506 fnotice (stderr
, "Setting spec %s to '%s'\n\n", name
, *(sl
->ptr_spec
));
1509 /* Free the old spec. */
1510 if (old_spec
&& sl
->alloc_p
)
1511 free (CONST_CAST(char *, old_spec
));
1516 /* Accumulate a command (program name and args), and run it. */
1518 typedef const char *const_char_p
; /* For DEF_VEC_P. */
1519 DEF_VEC_P(const_char_p
);
1520 DEF_VEC_ALLOC_P(const_char_p
,heap
);
1522 /* Vector of pointers to arguments in the current line of specifications. */
1524 static VEC(const_char_p
,heap
) *argbuf
;
1526 /* Position in the argbuf vector containing the name of the output file
1527 (the value associated with the "-o" flag). */
1529 static int have_o_argbuf_index
= 0;
1531 /* Were the options -c, -S or -E passed. */
1532 static int have_c
= 0;
1534 /* Was the option -o passed. */
1535 static int have_o
= 0;
1537 /* This is the list of suffixes and codes (%g/%u/%U/%j) and the associated
1538 temp file. If the HOST_BIT_BUCKET is used for %j, no entry is made for
1541 static struct temp_name
{
1542 const char *suffix
; /* suffix associated with the code. */
1543 int length
; /* strlen (suffix). */
1544 int unique
; /* Indicates whether %g or %u/%U was used. */
1545 const char *filename
; /* associated filename. */
1546 int filename_length
; /* strlen (filename). */
1547 struct temp_name
*next
;
1550 /* Number of commands executed so far. */
1552 static int execution_count
;
1554 /* Number of commands that exited with a signal. */
1556 static int signal_count
;
1558 /* Allocate the argument vector. */
1563 argbuf
= VEC_alloc (const_char_p
, heap
, 10);
1566 /* Clear out the vector of arguments (after a command is executed). */
1571 VEC_truncate (const_char_p
, argbuf
, 0);
1574 /* Add one argument to the vector at the end.
1575 This is done when a space is seen or at the end of the line.
1576 If DELETE_ALWAYS is nonzero, the arg is a filename
1577 and the file should be deleted eventually.
1578 If DELETE_FAILURE is nonzero, the arg is a filename
1579 and the file should be deleted if this compilation fails. */
1582 store_arg (const char *arg
, int delete_always
, int delete_failure
)
1584 VEC_safe_push (const_char_p
, heap
, argbuf
, arg
);
1586 if (strcmp (arg
, "-o") == 0)
1587 have_o_argbuf_index
= VEC_length (const_char_p
, argbuf
);
1588 if (delete_always
|| delete_failure
)
1591 /* If the temporary file we should delete is specified as
1592 part of a joined argument extract the filename. */
1594 && (p
= strrchr (arg
, '=')))
1596 record_temp_file (arg
, delete_always
, delete_failure
);
1600 /* Load specs from a file name named FILENAME, replacing occurrences of
1601 various different types of line-endings, \r\n, \n\r and just \r, with
1605 load_specs (const char *filename
)
1609 struct stat statbuf
;
1616 fnotice (stderr
, "Reading specs from %s\n", filename
);
1618 /* Open and stat the file. */
1619 desc
= open (filename
, O_RDONLY
, 0);
1621 pfatal_with_name (filename
);
1622 if (stat (filename
, &statbuf
) < 0)
1623 pfatal_with_name (filename
);
1625 /* Read contents of file into BUFFER. */
1626 buffer
= XNEWVEC (char, statbuf
.st_size
+ 1);
1627 readlen
= read (desc
, buffer
, (unsigned) statbuf
.st_size
);
1629 pfatal_with_name (filename
);
1630 buffer
[readlen
] = 0;
1633 specs
= XNEWVEC (char, readlen
+ 1);
1635 for (buffer_p
= buffer
; buffer_p
&& *buffer_p
; buffer_p
++)
1641 if (buffer_p
> buffer
&& *(buffer_p
- 1) == '\n') /* \n\r */
1643 else if (*(buffer_p
+ 1) == '\n') /* \r\n */
1657 /* Read compilation specs from a file named FILENAME,
1658 replacing the default ones.
1660 A suffix which starts with `*' is a definition for
1661 one of the machine-specific sub-specs. The "suffix" should be
1662 *asm, *cc1, *cpp, *link, *startfile, etc.
1663 The corresponding spec is stored in asm_spec, etc.,
1664 rather than in the `compilers' vector.
1666 Anything invalid in the file is a fatal error. */
1669 read_specs (const char *filename
, int main_p
)
1674 buffer
= load_specs (filename
);
1676 /* Scan BUFFER for specs, putting them in the vector. */
1682 char *in
, *out
, *p1
, *p2
, *p3
;
1684 /* Advance P in BUFFER to the next nonblank nocomment line. */
1685 p
= skip_whitespace (p
);
1689 /* Is this a special command that starts with '%'? */
1690 /* Don't allow this for the main specs file, since it would
1691 encourage people to overwrite it. */
1692 if (*p
== '%' && !main_p
)
1695 while (*p
&& *p
!= '\n')
1701 if (!strncmp (p1
, "%include", sizeof ("%include") - 1)
1702 && (p1
[sizeof "%include" - 1] == ' '
1703 || p1
[sizeof "%include" - 1] == '\t'))
1707 p1
+= sizeof ("%include");
1708 while (*p1
== ' ' || *p1
== '\t')
1711 if (*p1
++ != '<' || p
[-2] != '>')
1712 fatal_error ("specs %%include syntax malformed after "
1714 (long) (p1
- buffer
+ 1));
1717 new_filename
= find_a_file (&startfile_prefixes
, p1
, R_OK
, true);
1718 read_specs (new_filename
? new_filename
: p1
, FALSE
);
1721 else if (!strncmp (p1
, "%include_noerr", sizeof "%include_noerr" - 1)
1722 && (p1
[sizeof "%include_noerr" - 1] == ' '
1723 || p1
[sizeof "%include_noerr" - 1] == '\t'))
1727 p1
+= sizeof "%include_noerr";
1728 while (*p1
== ' ' || *p1
== '\t')
1731 if (*p1
++ != '<' || p
[-2] != '>')
1732 fatal_error ("specs %%include syntax malformed after "
1734 (long) (p1
- buffer
+ 1));
1737 new_filename
= find_a_file (&startfile_prefixes
, p1
, R_OK
, true);
1739 read_specs (new_filename
, FALSE
);
1740 else if (verbose_flag
)
1741 fnotice (stderr
, "could not find specs file %s\n", p1
);
1744 else if (!strncmp (p1
, "%rename", sizeof "%rename" - 1)
1745 && (p1
[sizeof "%rename" - 1] == ' '
1746 || p1
[sizeof "%rename" - 1] == '\t'))
1749 struct spec_list
*sl
;
1750 struct spec_list
*newsl
;
1752 /* Get original name. */
1753 p1
+= sizeof "%rename";
1754 while (*p1
== ' ' || *p1
== '\t')
1757 if (! ISALPHA ((unsigned char) *p1
))
1758 fatal_error ("specs %%rename syntax malformed after "
1760 (long) (p1
- buffer
));
1763 while (*p2
&& !ISSPACE ((unsigned char) *p2
))
1766 if (*p2
!= ' ' && *p2
!= '\t')
1767 fatal_error ("specs %%rename syntax malformed after "
1769 (long) (p2
- buffer
));
1773 while (*p2
== ' ' || *p2
== '\t')
1776 if (! ISALPHA ((unsigned char) *p2
))
1777 fatal_error ("specs %%rename syntax malformed after "
1779 (long) (p2
- buffer
));
1781 /* Get new spec name. */
1783 while (*p3
&& !ISSPACE ((unsigned char) *p3
))
1787 fatal_error ("specs %%rename syntax malformed after "
1789 (long) (p3
- buffer
));
1792 for (sl
= specs
; sl
; sl
= sl
->next
)
1793 if (name_len
== sl
->name_len
&& !strcmp (sl
->name
, p1
))
1797 fatal_error ("specs %s spec was not found to be renamed", p1
);
1799 if (strcmp (p1
, p2
) == 0)
1802 for (newsl
= specs
; newsl
; newsl
= newsl
->next
)
1803 if (strcmp (newsl
->name
, p2
) == 0)
1804 fatal_error ("%s: attempt to rename spec %qs to "
1805 "already defined spec %qs",
1810 fnotice (stderr
, "rename spec %s to %s\n", p1
, p2
);
1812 fnotice (stderr
, "spec is '%s'\n\n", *(sl
->ptr_spec
));
1816 set_spec (p2
, *(sl
->ptr_spec
));
1818 free (CONST_CAST (char *, *(sl
->ptr_spec
)));
1820 *(sl
->ptr_spec
) = "";
1825 fatal_error ("specs unknown %% command after %ld characters",
1826 (long) (p1
- buffer
));
1829 /* Find the colon that should end the suffix. */
1831 while (*p1
&& *p1
!= ':' && *p1
!= '\n')
1834 /* The colon shouldn't be missing. */
1836 fatal_error ("specs file malformed after %ld characters",
1837 (long) (p1
- buffer
));
1839 /* Skip back over trailing whitespace. */
1841 while (p2
> buffer
&& (p2
[-1] == ' ' || p2
[-1] == '\t'))
1844 /* Copy the suffix to a string. */
1845 suffix
= save_string (p
, p2
- p
);
1846 /* Find the next line. */
1847 p
= skip_whitespace (p1
+ 1);
1849 fatal_error ("specs file malformed after %ld characters",
1850 (long) (p
- buffer
));
1853 /* Find next blank line or end of string. */
1854 while (*p1
&& !(*p1
== '\n' && (p1
[1] == '\n' || p1
[1] == '\0')))
1857 /* Specs end at the blank line and do not include the newline. */
1858 spec
= save_string (p
, p1
- p
);
1861 /* Delete backslash-newline sequences from the spec. */
1866 if (in
[0] == '\\' && in
[1] == '\n')
1868 else if (in
[0] == '#')
1869 while (*in
&& *in
!= '\n')
1877 if (suffix
[0] == '*')
1879 if (! strcmp (suffix
, "*link_command"))
1880 link_command_spec
= spec
;
1882 set_spec (suffix
+ 1, spec
);
1886 /* Add this pair to the vector. */
1888 = XRESIZEVEC (struct compiler
, compilers
, n_compilers
+ 2);
1890 compilers
[n_compilers
].suffix
= suffix
;
1891 compilers
[n_compilers
].spec
= spec
;
1893 memset (&compilers
[n_compilers
], 0, sizeof compilers
[n_compilers
]);
1897 link_command_spec
= spec
;
1900 if (link_command_spec
== 0)
1901 fatal_error ("spec file has no spec for linking");
1904 /* Record the names of temporary files we tell compilers to write,
1905 and delete them at the end of the run. */
1907 /* This is the common prefix we use to make temp file names.
1908 It is chosen once for each run of this program.
1909 It is substituted into a spec by %g or %j.
1910 Thus, all temp file names contain this prefix.
1911 In practice, all temp file names start with this prefix.
1913 This prefix comes from the envvar TMPDIR if it is defined;
1914 otherwise, from the P_tmpdir macro if that is defined;
1915 otherwise, in /usr/tmp or /tmp;
1916 or finally the current directory if all else fails. */
1918 static const char *temp_filename
;
1920 /* Length of the prefix. */
1922 static int temp_filename_length
;
1924 /* Define the list of temporary files to delete. */
1929 struct temp_file
*next
;
1932 /* Queue of files to delete on success or failure of compilation. */
1933 static struct temp_file
*always_delete_queue
;
1934 /* Queue of files to delete on failure of compilation. */
1935 static struct temp_file
*failure_delete_queue
;
1937 /* Record FILENAME as a file to be deleted automatically.
1938 ALWAYS_DELETE nonzero means delete it if all compilation succeeds;
1939 otherwise delete it in any case.
1940 FAIL_DELETE nonzero means delete it if a compilation step fails;
1941 otherwise delete it in any case. */
1944 record_temp_file (const char *filename
, int always_delete
, int fail_delete
)
1946 char *const name
= xstrdup (filename
);
1950 struct temp_file
*temp
;
1951 for (temp
= always_delete_queue
; temp
; temp
= temp
->next
)
1952 if (! strcmp (name
, temp
->name
))
1955 temp
= XNEW (struct temp_file
);
1956 temp
->next
= always_delete_queue
;
1958 always_delete_queue
= temp
;
1965 struct temp_file
*temp
;
1966 for (temp
= failure_delete_queue
; temp
; temp
= temp
->next
)
1967 if (! strcmp (name
, temp
->name
))
1970 temp
= XNEW (struct temp_file
);
1971 temp
->next
= failure_delete_queue
;
1973 failure_delete_queue
= temp
;
1979 /* Delete all the temporary files whose names we previously recorded. */
1981 #ifndef DELETE_IF_ORDINARY
1982 #define DELETE_IF_ORDINARY(NAME,ST,VERBOSE_FLAG) \
1985 if (stat (NAME, &ST) >= 0 && S_ISREG (ST.st_mode)) \
1986 if (unlink (NAME) < 0) \
1988 perror_with_name (NAME); \
1993 delete_if_ordinary (const char *name
)
1999 printf ("Delete %s? (y or n) ", name
);
2003 while ((c
= getchar ()) != '\n' && c
!= EOF
)
2006 if (i
== 'y' || i
== 'Y')
2008 DELETE_IF_ORDINARY (name
, st
, verbose_flag
);
2012 delete_temp_files (void)
2014 struct temp_file
*temp
;
2016 for (temp
= always_delete_queue
; temp
; temp
= temp
->next
)
2017 delete_if_ordinary (temp
->name
);
2018 always_delete_queue
= 0;
2021 /* Delete all the files to be deleted on error. */
2024 delete_failure_queue (void)
2026 struct temp_file
*temp
;
2028 for (temp
= failure_delete_queue
; temp
; temp
= temp
->next
)
2029 delete_if_ordinary (temp
->name
);
2033 clear_failure_queue (void)
2035 failure_delete_queue
= 0;
2038 /* Call CALLBACK for each path in PATHS, breaking out early if CALLBACK
2040 If DO_MULTI is true iterate over the paths twice, first with multilib
2041 suffix then without, otherwise iterate over the paths once without
2042 adding a multilib suffix. When DO_MULTI is true, some attempt is made
2043 to avoid visiting the same path twice, but we could do better. For
2044 instance, /usr/lib/../lib is considered different from /usr/lib.
2045 At least EXTRA_SPACE chars past the end of the path passed to
2046 CALLBACK are available for use by the callback.
2047 CALLBACK_INFO allows extra parameters to be passed to CALLBACK.
2049 Returns the value returned by CALLBACK. */
2052 for_each_path (const struct path_prefix
*paths
,
2055 void *(*callback
) (char *, void *),
2056 void *callback_info
)
2058 struct prefix_list
*pl
;
2059 const char *multi_dir
= NULL
;
2060 const char *multi_os_dir
= NULL
;
2061 const char *multi_suffix
;
2062 const char *just_multi_suffix
;
2065 bool skip_multi_dir
= false;
2066 bool skip_multi_os_dir
= false;
2068 multi_suffix
= machine_suffix
;
2069 just_multi_suffix
= just_machine_suffix
;
2070 if (do_multi
&& multilib_dir
&& strcmp (multilib_dir
, ".") != 0)
2072 multi_dir
= concat (multilib_dir
, dir_separator_str
, NULL
);
2073 multi_suffix
= concat (multi_suffix
, multi_dir
, NULL
);
2074 just_multi_suffix
= concat (just_multi_suffix
, multi_dir
, NULL
);
2076 if (do_multi
&& multilib_os_dir
&& strcmp (multilib_os_dir
, ".") != 0)
2077 multi_os_dir
= concat (multilib_os_dir
, dir_separator_str
, NULL
);
2081 size_t multi_dir_len
= 0;
2082 size_t multi_os_dir_len
= 0;
2084 size_t just_suffix_len
;
2088 multi_dir_len
= strlen (multi_dir
);
2090 multi_os_dir_len
= strlen (multi_os_dir
);
2091 suffix_len
= strlen (multi_suffix
);
2092 just_suffix_len
= strlen (just_multi_suffix
);
2096 len
= paths
->max_len
+ extra_space
+ 1;
2097 if (suffix_len
> multi_os_dir_len
)
2100 len
+= multi_os_dir_len
;
2101 path
= XNEWVEC (char, len
);
2104 for (pl
= paths
->plist
; pl
!= 0; pl
= pl
->next
)
2106 len
= strlen (pl
->prefix
);
2107 memcpy (path
, pl
->prefix
, len
);
2109 /* Look first in MACHINE/VERSION subdirectory. */
2110 if (!skip_multi_dir
)
2112 memcpy (path
+ len
, multi_suffix
, suffix_len
+ 1);
2113 ret
= callback (path
, callback_info
);
2118 /* Some paths are tried with just the machine (ie. target)
2119 subdir. This is used for finding as, ld, etc. */
2121 && pl
->require_machine_suffix
== 2)
2123 memcpy (path
+ len
, just_multi_suffix
, just_suffix_len
+ 1);
2124 ret
= callback (path
, callback_info
);
2129 /* Now try the base path. */
2130 if (!pl
->require_machine_suffix
2131 && !(pl
->os_multilib
? skip_multi_os_dir
: skip_multi_dir
))
2133 const char *this_multi
;
2134 size_t this_multi_len
;
2136 if (pl
->os_multilib
)
2138 this_multi
= multi_os_dir
;
2139 this_multi_len
= multi_os_dir_len
;
2143 this_multi
= multi_dir
;
2144 this_multi_len
= multi_dir_len
;
2148 memcpy (path
+ len
, this_multi
, this_multi_len
+ 1);
2152 ret
= callback (path
, callback_info
);
2160 if (multi_dir
== NULL
&& multi_os_dir
== NULL
)
2163 /* Run through the paths again, this time without multilibs.
2164 Don't repeat any we have already seen. */
2167 free (CONST_CAST (char *, multi_dir
));
2169 free (CONST_CAST (char *, multi_suffix
));
2170 multi_suffix
= machine_suffix
;
2171 free (CONST_CAST (char *, just_multi_suffix
));
2172 just_multi_suffix
= just_machine_suffix
;
2175 skip_multi_dir
= true;
2178 free (CONST_CAST (char *, multi_os_dir
));
2179 multi_os_dir
= NULL
;
2182 skip_multi_os_dir
= true;
2187 free (CONST_CAST (char *, multi_dir
));
2188 free (CONST_CAST (char *, multi_suffix
));
2189 free (CONST_CAST (char *, just_multi_suffix
));
2192 free (CONST_CAST (char *, multi_os_dir
));
2198 /* Callback for build_search_list. Adds path to obstack being built. */
2200 struct add_to_obstack_info
{
2207 add_to_obstack (char *path
, void *data
)
2209 struct add_to_obstack_info
*info
= (struct add_to_obstack_info
*) data
;
2211 if (info
->check_dir
&& !is_directory (path
, false))
2214 if (!info
->first_time
)
2215 obstack_1grow (info
->ob
, PATH_SEPARATOR
);
2217 obstack_grow (info
->ob
, path
, strlen (path
));
2219 info
->first_time
= false;
2223 /* Add or change the value of an environment variable, outputting the
2224 change to standard error if in verbose mode. */
2226 xputenv (const char *string
)
2229 fnotice (stderr
, "%s\n", string
);
2230 putenv (CONST_CAST (char *, string
));
2233 /* Build a list of search directories from PATHS.
2234 PREFIX is a string to prepend to the list.
2235 If CHECK_DIR_P is true we ensure the directory exists.
2236 If DO_MULTI is true, multilib paths are output first, then
2238 This is used mostly by putenv_from_prefixes so we use `collect_obstack'.
2239 It is also used by the --print-search-dirs flag. */
2242 build_search_list (const struct path_prefix
*paths
, const char *prefix
,
2243 bool check_dir
, bool do_multi
)
2245 struct add_to_obstack_info info
;
2247 info
.ob
= &collect_obstack
;
2248 info
.check_dir
= check_dir
;
2249 info
.first_time
= true;
2251 obstack_grow (&collect_obstack
, prefix
, strlen (prefix
));
2252 obstack_1grow (&collect_obstack
, '=');
2254 for_each_path (paths
, do_multi
, 0, add_to_obstack
, &info
);
2256 obstack_1grow (&collect_obstack
, '\0');
2257 return XOBFINISH (&collect_obstack
, char *);
2260 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
2264 putenv_from_prefixes (const struct path_prefix
*paths
, const char *env_var
,
2267 xputenv (build_search_list (paths
, env_var
, true, do_multi
));
2270 /* Check whether NAME can be accessed in MODE. This is like access,
2271 except that it never considers directories to be executable. */
2274 access_check (const char *name
, int mode
)
2280 if (stat (name
, &st
) < 0
2281 || S_ISDIR (st
.st_mode
))
2285 return access (name
, mode
);
2288 /* Callback for find_a_file. Appends the file name to the directory
2289 path. If the resulting file exists in the right mode, return the
2290 full pathname to the file. */
2292 struct file_at_path_info
{
2301 file_at_path (char *path
, void *data
)
2303 struct file_at_path_info
*info
= (struct file_at_path_info
*) data
;
2304 size_t len
= strlen (path
);
2306 memcpy (path
+ len
, info
->name
, info
->name_len
);
2307 len
+= info
->name_len
;
2309 /* Some systems have a suffix for executable files.
2310 So try appending that first. */
2311 if (info
->suffix_len
)
2313 memcpy (path
+ len
, info
->suffix
, info
->suffix_len
+ 1);
2314 if (access_check (path
, info
->mode
) == 0)
2319 if (access_check (path
, info
->mode
) == 0)
2325 /* Search for NAME using the prefix list PREFIXES. MODE is passed to
2326 access to check permissions. If DO_MULTI is true, search multilib
2327 paths then non-multilib paths, otherwise do not search multilib paths.
2328 Return 0 if not found, otherwise return its name, allocated with malloc. */
2331 find_a_file (const struct path_prefix
*pprefix
, const char *name
, int mode
,
2334 struct file_at_path_info info
;
2336 #ifdef DEFAULT_ASSEMBLER
2337 if (! strcmp (name
, "as") && access (DEFAULT_ASSEMBLER
, mode
) == 0)
2338 return xstrdup (DEFAULT_ASSEMBLER
);
2341 #ifdef DEFAULT_LINKER
2342 if (! strcmp(name
, "ld") && access (DEFAULT_LINKER
, mode
) == 0)
2343 return xstrdup (DEFAULT_LINKER
);
2346 /* Determine the filename to execute (special case for absolute paths). */
2348 if (IS_ABSOLUTE_PATH (name
))
2350 if (access (name
, mode
) == 0)
2351 return xstrdup (name
);
2357 info
.suffix
= (mode
& X_OK
) != 0 ? HOST_EXECUTABLE_SUFFIX
: "";
2358 info
.name_len
= strlen (info
.name
);
2359 info
.suffix_len
= strlen (info
.suffix
);
2362 return (char*) for_each_path (pprefix
, do_multi
,
2363 info
.name_len
+ info
.suffix_len
,
2364 file_at_path
, &info
);
2367 /* Ranking of prefixes in the sort list. -B prefixes are put before
2370 enum path_prefix_priority
2372 PREFIX_PRIORITY_B_OPT
,
2373 PREFIX_PRIORITY_LAST
2376 /* Add an entry for PREFIX in PLIST. The PLIST is kept in ascending
2377 order according to PRIORITY. Within each PRIORITY, new entries are
2380 If WARN is nonzero, we will warn if no file is found
2381 through this prefix. WARN should point to an int
2382 which will be set to 1 if this entry is used.
2384 COMPONENT is the value to be passed to update_path.
2386 REQUIRE_MACHINE_SUFFIX is 1 if this prefix can't be used without
2387 the complete value of machine_suffix.
2388 2 means try both machine_suffix and just_machine_suffix. */
2391 add_prefix (struct path_prefix
*pprefix
, const char *prefix
,
2392 const char *component
, /* enum prefix_priority */ int priority
,
2393 int require_machine_suffix
, int os_multilib
)
2395 struct prefix_list
*pl
, **prev
;
2398 for (prev
= &pprefix
->plist
;
2399 (*prev
) != NULL
&& (*prev
)->priority
<= priority
;
2400 prev
= &(*prev
)->next
)
2403 /* Keep track of the longest prefix. */
2405 prefix
= update_path (prefix
, component
);
2406 len
= strlen (prefix
);
2407 if (len
> pprefix
->max_len
)
2408 pprefix
->max_len
= len
;
2410 pl
= XNEW (struct prefix_list
);
2411 pl
->prefix
= prefix
;
2412 pl
->require_machine_suffix
= require_machine_suffix
;
2413 pl
->priority
= priority
;
2414 pl
->os_multilib
= os_multilib
;
2416 /* Insert after PREV. */
2421 /* Same as add_prefix, but prepending target_system_root to prefix. */
2422 /* The target_system_root prefix has been relocated by gcc_exec_prefix. */
2424 add_sysrooted_prefix (struct path_prefix
*pprefix
, const char *prefix
,
2425 const char *component
,
2426 /* enum prefix_priority */ int priority
,
2427 int require_machine_suffix
, int os_multilib
)
2429 if (!IS_ABSOLUTE_PATH (prefix
))
2430 fatal_error ("system path %qs is not absolute", prefix
);
2432 if (target_system_root
)
2434 if (target_sysroot_suffix
)
2435 prefix
= concat (target_sysroot_suffix
, prefix
, NULL
);
2436 prefix
= concat (target_system_root
, prefix
, NULL
);
2438 /* We have to override this because GCC's notion of sysroot
2439 moves along with GCC. */
2443 add_prefix (pprefix
, prefix
, component
, priority
,
2444 require_machine_suffix
, os_multilib
);
2447 /* Execute the command specified by the arguments on the current line of spec.
2448 When using pipes, this includes several piped-together commands
2449 with `|' between them.
2451 Return 0 if successful, -1 if failed. */
2457 int n_commands
; /* # of command. */
2459 struct pex_obj
*pex
;
2462 const char *prog
; /* program name. */
2463 const char **argv
; /* vector of args. */
2467 struct command
*commands
; /* each command buffer with above info. */
2469 gcc_assert (!processing_spec_function
);
2473 string
= find_a_file (&exec_prefixes
,
2474 VEC_index (const_char_p
, argbuf
, 0), X_OK
, false);
2476 VEC_replace (const_char_p
, argbuf
, 0, string
);
2477 insert_wrapper (wrapper_string
);
2480 /* Count # of piped commands. */
2481 for (n_commands
= 1, i
= 0; VEC_iterate (const_char_p
, argbuf
, i
, arg
); i
++)
2482 if (strcmp (arg
, "|") == 0)
2485 /* Get storage for each command. */
2486 commands
= (struct command
*) alloca (n_commands
* sizeof (struct command
));
2488 /* Split argbuf into its separate piped processes,
2489 and record info about each one.
2490 Also search for the programs that are to be run. */
2492 VEC_safe_push (const_char_p
, heap
, argbuf
, 0);
2494 commands
[0].prog
= VEC_index (const_char_p
, argbuf
, 0); /* first command. */
2495 commands
[0].argv
= VEC_address (const_char_p
, argbuf
);
2497 if (!wrapper_string
)
2499 string
= find_a_file (&exec_prefixes
, commands
[0].prog
, X_OK
, false);
2500 commands
[0].argv
[0] = (string
) ? string
: commands
[0].argv
[0];
2503 for (n_commands
= 1, i
= 0; VEC_iterate (const_char_p
, argbuf
, i
, arg
); i
++)
2504 if (arg
&& strcmp (arg
, "|") == 0)
2505 { /* each command. */
2506 #if defined (__MSDOS__) || defined (OS2) || defined (VMS)
2507 fatal_error ("-pipe not supported");
2509 VEC_replace (const_char_p
, argbuf
, i
, 0); /* Termination of
2511 commands
[n_commands
].prog
= VEC_index (const_char_p
, argbuf
, i
+ 1);
2512 commands
[n_commands
].argv
2513 = &(VEC_address (const_char_p
, argbuf
))[i
+ 1];
2514 string
= find_a_file (&exec_prefixes
, commands
[n_commands
].prog
,
2517 commands
[n_commands
].argv
[0] = string
;
2521 /* If -v, print what we are about to do, and maybe query. */
2525 /* For help listings, put a blank line between sub-processes. */
2526 if (print_help_list
)
2527 fputc ('\n', stderr
);
2529 /* Print each piped command as a separate line. */
2530 for (i
= 0; i
< n_commands
; i
++)
2532 const char *const *j
;
2534 if (verbose_only_flag
)
2536 for (j
= commands
[i
].argv
; *j
; j
++)
2539 for (p
= *j
; *p
; ++p
)
2540 if (!ISALNUM ((unsigned char) *p
)
2541 && *p
!= '_' && *p
!= '/' && *p
!= '-' && *p
!= '.')
2545 fprintf (stderr
, " \"");
2546 for (p
= *j
; *p
; ++p
)
2548 if (*p
== '"' || *p
== '\\' || *p
== '$')
2549 fputc ('\\', stderr
);
2552 fputc ('"', stderr
);
2554 /* If it's empty, print "". */
2556 fprintf (stderr
, " \"\"");
2558 fprintf (stderr
, " %s", *j
);
2562 for (j
= commands
[i
].argv
; *j
; j
++)
2563 /* If it's empty, print "". */
2565 fprintf (stderr
, " \"\"");
2567 fprintf (stderr
, " %s", *j
);
2569 /* Print a pipe symbol after all but the last command. */
2570 if (i
+ 1 != n_commands
)
2571 fprintf (stderr
, " |");
2572 fprintf (stderr
, "\n");
2575 if (verbose_only_flag
!= 0)
2577 /* verbose_only_flag should act as if the spec was
2578 executed, so increment execution_count before
2579 returning. This prevents spurious warnings about
2580 unused linker input files, etc. */
2585 fnotice (stderr
, "\nGo ahead? (y or n) ");
2589 while (getchar () != '\n')
2592 if (i
!= 'y' && i
!= 'Y')
2597 #ifdef ENABLE_VALGRIND_CHECKING
2598 /* Run the each command through valgrind. To simplify prepending the
2599 path to valgrind and the option "-q" (for quiet operation unless
2600 something triggers), we allocate a separate argv array. */
2602 for (i
= 0; i
< n_commands
; i
++)
2608 for (argc
= 0; commands
[i
].argv
[argc
] != NULL
; argc
++)
2611 argv
= XALLOCAVEC (const char *, argc
+ 3);
2613 argv
[0] = VALGRIND_PATH
;
2615 for (j
= 2; j
< argc
+ 2; j
++)
2616 argv
[j
] = commands
[i
].argv
[j
- 2];
2619 commands
[i
].argv
= argv
;
2620 commands
[i
].prog
= argv
[0];
2624 /* Run each piped subprocess. */
2626 pex
= pex_init (PEX_USE_PIPES
| ((report_times
|| report_times_to_file
)
2627 ? PEX_RECORD_TIMES
: 0),
2628 progname
, temp_filename
);
2630 fatal_error ("pex_init failed: %m");
2632 for (i
= 0; i
< n_commands
; i
++)
2636 const char *string
= commands
[i
].argv
[0];
2638 errmsg
= pex_run (pex
,
2639 ((i
+ 1 == n_commands
? PEX_LAST
: 0)
2640 | (string
== commands
[i
].prog
? PEX_SEARCH
: 0)),
2641 string
, CONST_CAST (char **, commands
[i
].argv
),
2646 fatal_error (errmsg
);
2650 pfatal_with_name (errmsg
);
2654 if (string
!= commands
[i
].prog
)
2655 free (CONST_CAST (char *, string
));
2660 /* Wait for all the subprocesses to finish. */
2664 struct pex_time
*times
= NULL
;
2667 statuses
= (int *) alloca (n_commands
* sizeof (int));
2668 if (!pex_get_status (pex
, n_commands
, statuses
))
2669 fatal_error ("failed to get exit status: %m");
2671 if (report_times
|| report_times_to_file
)
2673 times
= (struct pex_time
*) alloca (n_commands
* sizeof (struct pex_time
));
2674 if (!pex_get_times (pex
, n_commands
, times
))
2675 fatal_error ("failed to get process times: %m");
2680 for (i
= 0; i
< n_commands
; ++i
)
2682 int status
= statuses
[i
];
2684 if (WIFSIGNALED (status
))
2687 /* SIGPIPE is a special case. It happens in -pipe mode
2688 when the compiler dies before the preprocessor is done,
2689 or the assembler dies before the compiler is done.
2690 There's generally been an error already, and this is
2691 just fallout. So don't generate another error unless
2692 we would otherwise have succeeded. */
2693 if (WTERMSIG (status
) == SIGPIPE
2694 && (signal_count
|| greatest_status
>= MIN_FATAL_STATUS
))
2701 internal_error ("%s (program %s)",
2702 strsignal (WTERMSIG (status
)), commands
[i
].prog
);
2704 else if (WIFEXITED (status
)
2705 && WEXITSTATUS (status
) >= MIN_FATAL_STATUS
)
2707 if (WEXITSTATUS (status
) > greatest_status
)
2708 greatest_status
= WEXITSTATUS (status
);
2712 if (report_times
|| report_times_to_file
)
2714 struct pex_time
*pt
= ×
[i
];
2717 ut
= ((double) pt
->user_seconds
2718 + (double) pt
->user_microseconds
/ 1.0e6
);
2719 st
= ((double) pt
->system_seconds
2720 + (double) pt
->system_microseconds
/ 1.0e6
);
2725 fnotice (stderr
, "# %s %.2f %.2f\n",
2726 commands
[i
].prog
, ut
, st
);
2728 if (report_times_to_file
)
2731 const char *const *j
;
2733 fprintf (report_times_to_file
, "%g %g", ut
, st
);
2735 for (j
= &commands
[i
].prog
; *j
; j
= &commands
[i
].argv
[++c
])
2738 for (p
= *j
; *p
; ++p
)
2739 if (*p
== '"' || *p
== '\\' || *p
== '$'
2745 fprintf (report_times_to_file
, " \"");
2746 for (p
= *j
; *p
; ++p
)
2748 if (*p
== '"' || *p
== '\\' || *p
== '$')
2749 fputc ('\\', report_times_to_file
);
2750 fputc (*p
, report_times_to_file
);
2752 fputc ('"', report_times_to_file
);
2755 fprintf (report_times_to_file
, " %s", *j
);
2758 fputc ('\n', report_times_to_file
);
2768 /* Find all the switches given to us
2769 and make a vector describing them.
2770 The elements of the vector are strings, one per switch given.
2771 If a switch uses following arguments, then the `part1' field
2772 is the switch itself and the `args' field
2773 is a null-terminated vector containing the following arguments.
2774 Bits in the `live_cond' field are:
2775 SWITCH_LIVE to indicate this switch is true in a conditional spec.
2776 SWITCH_FALSE to indicate this switch is overridden by a later switch.
2777 SWITCH_IGNORE to indicate this switch should be ignored (used in %<S).
2778 SWITCH_IGNORE_PERMANENTLY to indicate this switch should be ignored
2779 in all do_spec calls afterwards. Used for %<S from self specs.
2780 The `validated' field is nonzero if any spec has looked at this switch;
2781 if it remains zero at the end of the run, it must be meaningless. */
2783 #define SWITCH_LIVE (1 << 0)
2784 #define SWITCH_FALSE (1 << 1)
2785 #define SWITCH_IGNORE (1 << 2)
2786 #define SWITCH_IGNORE_PERMANENTLY (1 << 3)
2787 #define SWITCH_KEEP_FOR_GCC (1 << 4)
2793 unsigned int live_cond
;
2794 unsigned char validated
;
2795 unsigned char ordering
;
2798 static struct switchstr
*switches
;
2800 static int n_switches
;
2802 static int n_switches_alloc
;
2804 /* Set to zero if -fcompare-debug is disabled, positive if it's
2805 enabled and we're running the first compilation, negative if it's
2806 enabled and we're running the second compilation. For most of the
2807 time, it's in the range -1..1, but it can be temporarily set to 2
2808 or 3 to indicate that the -fcompare-debug flags didn't come from
2809 the command-line, but rather from the GCC_COMPARE_DEBUG environment
2810 variable, until a synthesized -fcompare-debug flag is added to the
2814 /* Set to nonzero if we've seen the -fcompare-debug-second flag. */
2815 int compare_debug_second
;
2817 /* Set to the flags that should be passed to the second compilation in
2818 a -fcompare-debug compilation. */
2819 const char *compare_debug_opt
;
2821 static struct switchstr
*switches_debug_check
[2];
2823 static int n_switches_debug_check
[2];
2825 static int n_switches_alloc_debug_check
[2];
2827 static char *debug_check_temp_file
[2];
2829 /* Language is one of three things:
2831 1) The name of a real programming language.
2832 2) NULL, indicating that no one has figured out
2834 3) '*', indicating that the file should be passed
2839 const char *language
;
2840 struct compiler
*incompiler
;
2845 /* Also a vector of input files specified. */
2847 static struct infile
*infiles
;
2851 static int n_infiles_alloc
;
2853 /* True if multiple input files are being compiled to a single
2856 static bool combine_inputs
;
2858 /* This counts the number of libraries added by lang_specific_driver, so that
2859 we can tell if there were any user supplied any files or libraries. */
2861 static int added_libraries
;
2863 /* And a vector of corresponding output files is made up later. */
2865 const char **outfiles
;
2867 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2869 /* Convert NAME to a new name if it is the standard suffix. DO_EXE
2870 is true if we should look for an executable suffix. DO_OBJ
2871 is true if we should look for an object suffix. */
2874 convert_filename (const char *name
, int do_exe ATTRIBUTE_UNUSED
,
2875 int do_obj ATTRIBUTE_UNUSED
)
2877 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2885 len
= strlen (name
);
2887 #ifdef HAVE_TARGET_OBJECT_SUFFIX
2888 /* Convert x.o to x.obj if TARGET_OBJECT_SUFFIX is ".obj". */
2889 if (do_obj
&& len
> 2
2890 && name
[len
- 2] == '.'
2891 && name
[len
- 1] == 'o')
2893 obstack_grow (&obstack
, name
, len
- 2);
2894 obstack_grow0 (&obstack
, TARGET_OBJECT_SUFFIX
, strlen (TARGET_OBJECT_SUFFIX
));
2895 name
= XOBFINISH (&obstack
, const char *);
2899 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2900 /* If there is no filetype, make it the executable suffix (which includes
2901 the "."). But don't get confused if we have just "-o". */
2902 if (! do_exe
|| TARGET_EXECUTABLE_SUFFIX
[0] == 0 || (len
== 2 && name
[0] == '-'))
2905 for (i
= len
- 1; i
>= 0; i
--)
2906 if (IS_DIR_SEPARATOR (name
[i
]))
2909 for (i
++; i
< len
; i
++)
2913 obstack_grow (&obstack
, name
, len
);
2914 obstack_grow0 (&obstack
, TARGET_EXECUTABLE_SUFFIX
,
2915 strlen (TARGET_EXECUTABLE_SUFFIX
));
2916 name
= XOBFINISH (&obstack
, const char *);
2923 /* Display the command line switches accepted by gcc. */
2927 printf (_("Usage: %s [options] file...\n"), progname
);
2928 fputs (_("Options:\n"), stdout
);
2930 fputs (_(" -pass-exit-codes Exit with highest error code from a phase\n"), stdout
);
2931 fputs (_(" --help Display this information\n"), stdout
);
2932 fputs (_(" --target-help Display target specific command line options\n"), stdout
);
2933 fputs (_(" --help={target|optimizers|warnings|params|[^]{joined|separate|undocumented}}[,...]\n"), stdout
);
2934 fputs (_(" Display specific types of command line options\n"), stdout
);
2936 fputs (_(" (Use '-v --help' to display command line options of sub-processes)\n"), stdout
);
2937 fputs (_(" --version Display compiler version information\n"), stdout
);
2938 fputs (_(" -dumpspecs Display all of the built in spec strings\n"), stdout
);
2939 fputs (_(" -dumpversion Display the version of the compiler\n"), stdout
);
2940 fputs (_(" -dumpmachine Display the compiler's target processor\n"), stdout
);
2941 fputs (_(" -print-search-dirs Display the directories in the compiler's search path\n"), stdout
);
2942 fputs (_(" -print-libgcc-file-name Display the name of the compiler's companion library\n"), stdout
);
2943 fputs (_(" -print-file-name=<lib> Display the full path to library <lib>\n"), stdout
);
2944 fputs (_(" -print-prog-name=<prog> Display the full path to compiler component <prog>\n"), stdout
);
2945 fputs (_(" -print-multi-directory Display the root directory for versions of libgcc\n"), stdout
);
2947 -print-multi-lib Display the mapping between command line options and\n\
2948 multiple library search directories\n"), stdout
);
2949 fputs (_(" -print-multi-os-directory Display the relative path to OS libraries\n"), stdout
);
2950 fputs (_(" -print-sysroot Display the target libraries directory\n"), stdout
);
2951 fputs (_(" -print-sysroot-headers-suffix Display the sysroot suffix used to find headers\n"), stdout
);
2952 fputs (_(" -Wa,<options> Pass comma-separated <options> on to the assembler\n"), stdout
);
2953 fputs (_(" -Wp,<options> Pass comma-separated <options> on to the preprocessor\n"), stdout
);
2954 fputs (_(" -Wl,<options> Pass comma-separated <options> on to the linker\n"), stdout
);
2955 fputs (_(" -Xassembler <arg> Pass <arg> on to the assembler\n"), stdout
);
2956 fputs (_(" -Xpreprocessor <arg> Pass <arg> on to the preprocessor\n"), stdout
);
2957 fputs (_(" -Xlinker <arg> Pass <arg> on to the linker\n"), stdout
);
2958 fputs (_(" -save-temps Do not delete intermediate files\n"), stdout
);
2959 fputs (_(" -save-temps=<arg> Do not delete intermediate files\n"), stdout
);
2961 -[no-]canonical-prefixes Specify the path canonicalization for relative\n\
2962 prefixes to other gcc components\n"), stdout
);
2963 fputs (_(" -pipe Use pipes rather than intermediate files\n"), stdout
);
2964 fputs (_(" -time Time the execution of each subprocess\n"), stdout
);
2965 fputs (_(" -specs=<file> Override built-in specs with the contents of <file>\n"), stdout
);
2966 fputs (_(" -std=<standard> Assume that the input sources are for <standard>\n"), stdout
);
2968 --sysroot=<directory> Use <directory> as the root directory for headers\n\
2969 and libraries\n"), stdout
);
2970 fputs (_(" -B <directory> Add <directory> to the compiler's search paths\n"), stdout
);
2971 fputs (_(" -v Display the programs invoked by the compiler\n"), stdout
);
2972 fputs (_(" -### Like -v but options quoted and commands not executed\n"), stdout
);
2973 fputs (_(" -E Preprocess only; do not compile, assemble or link\n"), stdout
);
2974 fputs (_(" -S Compile only; do not assemble or link\n"), stdout
);
2975 fputs (_(" -c Compile and assemble, but do not link\n"), stdout
);
2976 fputs (_(" -o <file> Place the output into <file>\n"), stdout
);
2978 -x <language> Specify the language of the following input files\n\
2979 Permissible languages include: c c++ assembler none\n\
2980 'none' means revert to the default behavior of\n\
2981 guessing the language based on the file's extension\n\
2985 \nOptions starting with -g, -f, -m, -O, -W, or --param are automatically\n\
2986 passed on to the various sub-processes invoked by %s. In order to pass\n\
2987 other options on to these processes the -W<letter> options must be used.\n\
2990 /* The rest of the options are displayed by invocations of the various
2995 add_preprocessor_option (const char *option
, int len
)
2997 VEC_safe_push (char_p
, heap
, preprocessor_options
,
2998 save_string (option
, len
));
3002 add_assembler_option (const char *option
, int len
)
3004 VEC_safe_push (char_p
, heap
, assembler_options
, save_string (option
, len
));
3008 add_linker_option (const char *option
, int len
)
3010 VEC_safe_push (char_p
, heap
, linker_options
, save_string (option
, len
));
3013 /* Allocate space for an input file in infiles. */
3018 if (n_infiles_alloc
== 0)
3020 n_infiles_alloc
= 16;
3021 infiles
= XNEWVEC (struct infile
, n_infiles_alloc
);
3023 else if (n_infiles_alloc
== n_infiles
)
3025 n_infiles_alloc
*= 2;
3026 infiles
= XRESIZEVEC (struct infile
, infiles
, n_infiles_alloc
);
3030 /* Store an input file with the given NAME and LANGUAGE in
3034 add_infile (const char *name
, const char *language
)
3037 infiles
[n_infiles
].name
= name
;
3038 infiles
[n_infiles
++].language
= language
;
3041 /* Allocate space for a switch in switches. */
3046 if (n_switches_alloc
== 0)
3048 n_switches_alloc
= 16;
3049 switches
= XNEWVEC (struct switchstr
, n_switches_alloc
);
3051 else if (n_switches_alloc
== n_switches
)
3053 n_switches_alloc
*= 2;
3054 switches
= XRESIZEVEC (struct switchstr
, switches
, n_switches_alloc
);
3058 /* Save an option OPT with N_ARGS arguments in array ARGS, marking it
3059 as validated if VALIDATED. */
3062 save_switch (const char *opt
, size_t n_args
, const char *const *args
,
3066 switches
[n_switches
].part1
= opt
+ 1;
3068 switches
[n_switches
].args
= 0;
3071 switches
[n_switches
].args
= XNEWVEC (const char *, n_args
+ 1);
3072 memcpy (switches
[n_switches
].args
, args
, n_args
* sizeof (const char *));
3073 switches
[n_switches
].args
[n_args
] = NULL
;
3076 switches
[n_switches
].live_cond
= 0;
3077 switches
[n_switches
].validated
= validated
;
3078 switches
[n_switches
].ordering
= 0;
3082 /* Handle an option DECODED that is unknown to the option-processing
3086 driver_unknown_option_callback (const struct cl_decoded_option
*decoded
)
3088 const char *opt
= decoded
->arg
;
3089 if (opt
[1] == 'W' && opt
[2] == 'n' && opt
[3] == 'o' && opt
[4] == '-'
3090 && !(decoded
->errors
& CL_ERR_NEGATIVE
))
3092 /* Leave unknown -Wno-* options for the compiler proper, to be
3093 diagnosed only if there are warnings. */
3094 save_switch (decoded
->canonical_option
[0],
3095 decoded
->canonical_option_num_elements
- 1,
3096 &decoded
->canonical_option
[1], false);
3103 /* Handle an option DECODED that is not marked as CL_DRIVER.
3104 LANG_MASK will always be CL_DRIVER. */
3107 driver_wrong_lang_callback (const struct cl_decoded_option
*decoded
,
3108 unsigned int lang_mask ATTRIBUTE_UNUSED
)
3110 /* At this point, non-driver options are accepted (and expected to
3111 be passed down by specs) unless marked to be rejected by the
3112 driver. Options to be rejected by the driver but accepted by the
3113 compilers proper are treated just like completely unknown
3115 const struct cl_option
*option
= &cl_options
[decoded
->opt_index
];
3117 if (option
->flags
& CL_REJECT_DRIVER
)
3118 error ("unrecognized command line option %qs",
3119 decoded
->orig_option_with_args_text
);
3121 save_switch (decoded
->canonical_option
[0],
3122 decoded
->canonical_option_num_elements
- 1,
3123 &decoded
->canonical_option
[1], false);
3126 /* Note that an option (index OPT_INDEX, argument ARG, value VALUE)
3127 has been successfully handled with a handler for mask MASK. */
3130 driver_post_handling_callback (const struct cl_decoded_option
*decoded ATTRIBUTE_UNUSED
,
3131 unsigned int mask ATTRIBUTE_UNUSED
)
3133 /* Nothing to do here. */
3136 static const char *spec_lang
= 0;
3137 static int last_language_n_infiles
;
3139 /* Handle a driver option; arguments and return value as for
3143 driver_handle_option (struct gcc_options
*opts
,
3144 struct gcc_options
*opts_set
,
3145 const struct cl_decoded_option
*decoded
,
3146 unsigned int lang_mask ATTRIBUTE_UNUSED
, int kind
,
3148 const struct cl_option_handlers
*handlers ATTRIBUTE_UNUSED
,
3149 diagnostic_context
*dc
)
3151 size_t opt_index
= decoded
->opt_index
;
3152 const char *arg
= decoded
->arg
;
3153 const char *compare_debug_replacement_opt
;
3154 int value
= decoded
->value
;
3155 bool validated
= false;
3156 bool do_save
= true;
3158 gcc_assert (opts
== &global_options
);
3159 gcc_assert (opts_set
== &global_options_set
);
3160 gcc_assert (kind
== DK_UNSPECIFIED
);
3161 gcc_assert (loc
== UNKNOWN_LOCATION
);
3162 gcc_assert (dc
== global_dc
);
3168 struct spec_list
*sl
;
3170 for (sl
= specs
; sl
; sl
= sl
->next
)
3171 printf ("*%s:\n%s\n\n", sl
->name
, *(sl
->ptr_spec
));
3172 if (link_command_spec
)
3173 printf ("*link_command:\n%s\n\n", link_command_spec
);
3177 case OPT_dumpversion
:
3178 printf ("%s\n", spec_version
);
3181 case OPT_dumpmachine
:
3182 printf ("%s\n", spec_machine
);
3188 /* CPP driver cannot obtain switch from cc1_options. */
3190 add_preprocessor_option ("--version", strlen ("--version"));
3191 add_assembler_option ("--version", strlen ("--version"));
3192 add_linker_option ("--version", strlen ("--version"));
3196 print_help_list
= 1;
3198 /* CPP driver cannot obtain switch from cc1_options. */
3200 add_preprocessor_option ("--help", 6);
3201 add_assembler_option ("--help", 6);
3202 add_linker_option ("--help", 6);
3206 print_subprocess_help
= 2;
3209 case OPT__target_help
:
3210 print_subprocess_help
= 1;
3212 /* CPP driver cannot obtain switch from cc1_options. */
3214 add_preprocessor_option ("--target-help", 13);
3215 add_assembler_option ("--target-help", 13);
3216 add_linker_option ("--target-help", 13);
3219 case OPT_pass_exit_codes
:
3220 case OPT_print_search_dirs
:
3221 case OPT_print_file_name_
:
3222 case OPT_print_prog_name_
:
3223 case OPT_print_multi_lib
:
3224 case OPT_print_multi_directory
:
3225 case OPT_print_sysroot
:
3226 case OPT_print_multi_os_directory
:
3227 case OPT_print_sysroot_headers_suffix
:
3230 /* These options set the variables specified in common.opt
3231 automatically, and do not need to be saved for spec
3236 case OPT_print_libgcc_file_name
:
3237 print_file_name
= "libgcc.a";
3241 case OPT_fcompare_debug_second
:
3242 compare_debug_second
= 1;
3245 case OPT_fcompare_debug
:
3249 compare_debug_replacement_opt
= "-fcompare-debug=";
3251 goto compare_debug_with_arg
;
3254 compare_debug_replacement_opt
= "-fcompare-debug=-gtoggle";
3256 goto compare_debug_with_arg
;
3263 case OPT_fcompare_debug_
:
3264 compare_debug_replacement_opt
= decoded
->canonical_option
[0];
3265 compare_debug_with_arg
:
3266 gcc_assert (decoded
->canonical_option_num_elements
== 1);
3267 gcc_assert (arg
!= NULL
);
3272 if (compare_debug
< 0)
3273 compare_debug_opt
= NULL
;
3275 compare_debug_opt
= arg
;
3276 save_switch (compare_debug_replacement_opt
, 0, NULL
, validated
);
3282 /* Pass the rest of this option to the assembler. */
3284 /* Split the argument at commas. */
3286 for (j
= 0; arg
[j
]; j
++)
3289 add_assembler_option (arg
+ prev
, j
- prev
);
3293 /* Record the part after the last comma. */
3294 add_assembler_option (arg
+ prev
, j
- prev
);
3302 /* Pass the rest of this option to the preprocessor. */
3304 /* Split the argument at commas. */
3306 for (j
= 0; arg
[j
]; j
++)
3309 add_preprocessor_option (arg
+ prev
, j
- prev
);
3313 /* Record the part after the last comma. */
3314 add_preprocessor_option (arg
+ prev
, j
- prev
);
3322 /* Split the argument at commas. */
3324 for (j
= 0; arg
[j
]; j
++)
3327 add_infile (save_string (arg
+ prev
, j
- prev
), "*");
3330 /* Record the part after the last comma. */
3331 add_infile (arg
+ prev
, "*");
3337 add_infile (arg
, "*");
3341 case OPT_Xpreprocessor
:
3342 add_preprocessor_option (arg
, strlen (arg
));
3346 case OPT_Xassembler
:
3347 add_assembler_option (arg
, strlen (arg
));
3352 /* POSIX allows separation of -l and the lib arg; canonicalize
3353 by concatenating -l with its arg */
3354 add_infile (concat ("-l", arg
, NULL
), "*");
3359 /* Similarly, canonicalize -L for linkers that may not accept
3360 separate arguments. */
3361 save_switch (concat ("-L", arg
, NULL
), 0, NULL
, validated
);
3366 save_switch (concat ("-F", arg
, NULL
), 0, NULL
, validated
);
3369 case OPT_save_temps
:
3370 save_temps_flag
= SAVE_TEMPS_CWD
;
3374 case OPT_save_temps_
:
3375 if (strcmp (arg
, "cwd") == 0)
3376 save_temps_flag
= SAVE_TEMPS_CWD
;
3377 else if (strcmp (arg
, "obj") == 0
3378 || strcmp (arg
, "object") == 0)
3379 save_temps_flag
= SAVE_TEMPS_OBJ
;
3381 fatal_error ("%qs is an unknown -save-temps option",
3382 decoded
->orig_option_with_args_text
);
3385 case OPT_canonical_prefixes
:
3386 case OPT_no_canonical_prefixes
:
3387 /* Already handled as a special case, so ignored here. */
3393 /* These options set the variables specified in common.opt
3394 automatically, but do need to be saved for spec
3400 struct user_specs
*user
= XNEW (struct user_specs
);
3402 user
->next
= (struct user_specs
*) 0;
3403 user
->filename
= arg
;
3404 if (user_specs_tail
)
3405 user_specs_tail
->next
= user
;
3407 user_specs_head
= user
;
3408 user_specs_tail
= user
;
3414 target_system_root
= arg
;
3415 target_system_root_changed
= 1;
3420 if (report_times_to_file
)
3421 fclose (report_times_to_file
);
3422 report_times_to_file
= fopen (arg
, "a");
3428 This is similar to -v except that there is no execution
3429 of the commands and the echoed arguments are quoted. It
3430 is intended for use in shell scripts to capture the
3431 driver-generated command line. */
3432 verbose_only_flag
++;
3439 size_t len
= strlen (arg
);
3441 /* Catch the case where the user has forgotten to append a
3442 directory separator to the path. Note, they may be using
3443 -B to add an executable name prefix, eg "i386-elf-", in
3444 order to distinguish between multiple installations of
3445 GCC in the same directory. Hence we must check to see
3446 if appending a directory separator actually makes a
3447 valid directory name. */
3448 if (!IS_DIR_SEPARATOR (arg
[len
- 1])
3449 && is_directory (arg
, false))
3451 char *tmp
= XNEWVEC (char, len
+ 2);
3453 tmp
[len
] = DIR_SEPARATOR
;
3458 add_prefix (&exec_prefixes
, arg
, NULL
,
3459 PREFIX_PRIORITY_B_OPT
, 0, 0);
3460 add_prefix (&startfile_prefixes
, arg
, NULL
,
3461 PREFIX_PRIORITY_B_OPT
, 0, 0);
3462 add_prefix (&include_prefixes
, arg
, NULL
,
3463 PREFIX_PRIORITY_B_OPT
, 0, 0);
3470 if (!strcmp (spec_lang
, "none"))
3471 /* Suppress the warning if -xnone comes after the last input
3472 file, because alternate command interfaces like g++ might
3473 find it useful to place -xnone after each input file. */
3476 last_language_n_infiles
= n_infiles
;
3482 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX) || defined(HAVE_TARGET_OBJECT_SUFFIX)
3483 arg
= convert_filename (arg
, ! have_c
, 0);
3485 /* Save the output name in case -save-temps=obj was used. */
3486 save_temps_prefix
= xstrdup (arg
);
3487 /* On some systems, ld cannot handle "-o" without a space. So
3488 split the option from its argument. */
3489 save_switch ("-o", 1, &arg
, validated
);
3492 case OPT_static_libgcc
:
3493 case OPT_shared_libgcc
:
3494 case OPT_static_libgfortran
:
3495 case OPT_static_libstdc__
:
3496 /* These are always valid, since gcc.c itself understands the
3497 first two, gfortranspec.c understands -static-libgfortran and
3498 g++spec.c understands -static-libstdc++ */
3503 /* Various driver options need no special processing at this
3504 point, having been handled in a prescan above or being
3505 handled by specs. */
3510 save_switch (decoded
->canonical_option
[0],
3511 decoded
->canonical_option_num_elements
- 1,
3512 &decoded
->canonical_option
[1], validated
);
3516 /* Put the driver's standard set of option handlers in *HANDLERS. */
3519 set_option_handlers (struct cl_option_handlers
*handlers
)
3521 handlers
->unknown_option_callback
= driver_unknown_option_callback
;
3522 handlers
->wrong_lang_callback
= driver_wrong_lang_callback
;
3523 handlers
->post_handling_callback
= driver_post_handling_callback
;
3524 handlers
->num_handlers
= 1;
3525 handlers
->handlers
[0].handler
= driver_handle_option
;
3526 handlers
->handlers
[0].mask
= CL_DRIVER
;
3529 /* Create the vector `switches' and its contents.
3530 Store its length in `n_switches'. */
3533 process_command (unsigned int decoded_options_count
,
3534 struct cl_decoded_option
*decoded_options
)
3538 const char *tooldir_prefix
;
3539 char *(*get_relative_prefix
) (const char *, const char *,
3540 const char *) = NULL
;
3541 struct cl_option_handlers handlers
;
3544 gcc_exec_prefix
= getenv ("GCC_EXEC_PREFIX");
3548 added_libraries
= 0;
3550 /* Figure compiler version from version string. */
3552 compiler_version
= temp1
= xstrdup (version_string
);
3554 for (; *temp1
; ++temp1
)
3563 /* Handle any -[no-]canonical-prefixes flags early, to assign the function
3564 that builds relative prefixes. This function creates default search
3565 paths that are needed later in normal option handling. */
3567 for (j
= 1; j
< decoded_options_count
; j
++)
3569 if (decoded_options
[j
].opt_index
== OPT_canonical_prefixes
)
3570 get_relative_prefix
= make_relative_prefix
;
3571 else if (decoded_options
[j
].opt_index
== OPT_no_canonical_prefixes
)
3572 get_relative_prefix
= make_relative_prefix_ignore_links
;
3574 if (! get_relative_prefix
)
3576 #ifdef ENABLE_CANONICAL_PREFIXES
3577 get_relative_prefix
= make_relative_prefix
;
3579 get_relative_prefix
= make_relative_prefix_ignore_links
;
3583 /* Set up the default search paths. If there is no GCC_EXEC_PREFIX,
3584 see if we can create it from the pathname specified in
3585 decoded_options[0].arg. */
3587 gcc_libexec_prefix
= standard_libexec_prefix
;
3589 /* FIXME: make_relative_prefix doesn't yet work for VMS. */
3590 if (!gcc_exec_prefix
)
3592 gcc_exec_prefix
= get_relative_prefix (decoded_options
[0].arg
,
3593 standard_bindir_prefix
,
3594 standard_exec_prefix
);
3595 gcc_libexec_prefix
= get_relative_prefix (decoded_options
[0].arg
,
3596 standard_bindir_prefix
,
3597 standard_libexec_prefix
);
3598 if (gcc_exec_prefix
)
3599 xputenv (concat ("GCC_EXEC_PREFIX=", gcc_exec_prefix
, NULL
));
3603 /* make_relative_prefix requires a program name, but
3604 GCC_EXEC_PREFIX is typically a directory name with a trailing
3605 / (which is ignored by make_relative_prefix), so append a
3607 char *tmp_prefix
= concat (gcc_exec_prefix
, "gcc", NULL
);
3608 gcc_libexec_prefix
= get_relative_prefix (tmp_prefix
,
3609 standard_exec_prefix
,
3610 standard_libexec_prefix
);
3612 /* The path is unrelocated, so fallback to the original setting. */
3613 if (!gcc_libexec_prefix
)
3614 gcc_libexec_prefix
= standard_libexec_prefix
;
3620 /* From this point onward, gcc_exec_prefix is non-null if the toolchain
3621 is relocated. The toolchain was either relocated using GCC_EXEC_PREFIX
3622 or an automatically created GCC_EXEC_PREFIX from
3623 decoded_options[0].arg. */
3625 /* Do language-specific adjustment/addition of flags. */
3626 lang_specific_driver (&decoded_options
, &decoded_options_count
,
3629 if (gcc_exec_prefix
)
3631 int len
= strlen (gcc_exec_prefix
);
3633 if (len
> (int) sizeof ("/lib/gcc/") - 1
3634 && (IS_DIR_SEPARATOR (gcc_exec_prefix
[len
-1])))
3636 temp
= gcc_exec_prefix
+ len
- sizeof ("/lib/gcc/") + 1;
3637 if (IS_DIR_SEPARATOR (*temp
)
3638 && strncmp (temp
+ 1, "lib", 3) == 0
3639 && IS_DIR_SEPARATOR (temp
[4])
3640 && strncmp (temp
+ 5, "gcc", 3) == 0)
3641 len
-= sizeof ("/lib/gcc/") - 1;
3644 set_std_prefix (gcc_exec_prefix
, len
);
3645 add_prefix (&exec_prefixes
, gcc_libexec_prefix
, "GCC",
3646 PREFIX_PRIORITY_LAST
, 0, 0);
3647 add_prefix (&startfile_prefixes
, gcc_exec_prefix
, "GCC",
3648 PREFIX_PRIORITY_LAST
, 0, 0);
3651 /* COMPILER_PATH and LIBRARY_PATH have values
3652 that are lists of directory names with colons. */
3654 temp
= getenv ("COMPILER_PATH");
3657 const char *startp
, *endp
;
3658 char *nstore
= (char *) alloca (strlen (temp
) + 3);
3660 startp
= endp
= temp
;
3663 if (*endp
== PATH_SEPARATOR
|| *endp
== 0)
3665 strncpy (nstore
, startp
, endp
- startp
);
3667 strcpy (nstore
, concat (".", dir_separator_str
, NULL
));
3668 else if (!IS_DIR_SEPARATOR (endp
[-1]))
3670 nstore
[endp
- startp
] = DIR_SEPARATOR
;
3671 nstore
[endp
- startp
+ 1] = 0;
3674 nstore
[endp
- startp
] = 0;
3675 add_prefix (&exec_prefixes
, nstore
, 0,
3676 PREFIX_PRIORITY_LAST
, 0, 0);
3677 add_prefix (&include_prefixes
, nstore
, 0,
3678 PREFIX_PRIORITY_LAST
, 0, 0);
3681 endp
= startp
= endp
+ 1;
3688 temp
= getenv (LIBRARY_PATH_ENV
);
3689 if (temp
&& *cross_compile
== '0')
3691 const char *startp
, *endp
;
3692 char *nstore
= (char *) alloca (strlen (temp
) + 3);
3694 startp
= endp
= temp
;
3697 if (*endp
== PATH_SEPARATOR
|| *endp
== 0)
3699 strncpy (nstore
, startp
, endp
- startp
);
3701 strcpy (nstore
, concat (".", dir_separator_str
, NULL
));
3702 else if (!IS_DIR_SEPARATOR (endp
[-1]))
3704 nstore
[endp
- startp
] = DIR_SEPARATOR
;
3705 nstore
[endp
- startp
+ 1] = 0;
3708 nstore
[endp
- startp
] = 0;
3709 add_prefix (&startfile_prefixes
, nstore
, NULL
,
3710 PREFIX_PRIORITY_LAST
, 0, 1);
3713 endp
= startp
= endp
+ 1;
3720 /* Use LPATH like LIBRARY_PATH (for the CMU build program). */
3721 temp
= getenv ("LPATH");
3722 if (temp
&& *cross_compile
== '0')
3724 const char *startp
, *endp
;
3725 char *nstore
= (char *) alloca (strlen (temp
) + 3);
3727 startp
= endp
= temp
;
3730 if (*endp
== PATH_SEPARATOR
|| *endp
== 0)
3732 strncpy (nstore
, startp
, endp
- startp
);
3734 strcpy (nstore
, concat (".", dir_separator_str
, NULL
));
3735 else if (!IS_DIR_SEPARATOR (endp
[-1]))
3737 nstore
[endp
- startp
] = DIR_SEPARATOR
;
3738 nstore
[endp
- startp
+ 1] = 0;
3741 nstore
[endp
- startp
] = 0;
3742 add_prefix (&startfile_prefixes
, nstore
, NULL
,
3743 PREFIX_PRIORITY_LAST
, 0, 1);
3746 endp
= startp
= endp
+ 1;
3753 /* Process the options and store input files and switches in their
3756 last_language_n_infiles
= -1;
3758 set_option_handlers (&handlers
);
3760 for (j
= 1; j
< decoded_options_count
; j
++)
3762 switch (decoded_options
[j
].opt_index
)
3774 for (j
= 1; j
< decoded_options_count
; j
++)
3776 if (decoded_options
[j
].opt_index
== OPT_SPECIAL_input_file
)
3778 const char *arg
= decoded_options
[j
].arg
;
3779 const char *p
= strrchr (arg
, '@');
3783 #ifdef HAVE_TARGET_OBJECT_SUFFIX
3784 arg
= convert_filename (arg
, 0, access (arg
, F_OK
));
3786 /* For LTO static archive support we handle input file
3787 specifications that are composed of a filename and
3788 an offset like FNAME@OFFSET. */
3791 && sscanf (p
, "@%li%n", &offset
, &consumed
) >= 1
3792 && strlen (p
) == (unsigned int)consumed
)
3794 fname
= (char *)xmalloc (p
- arg
+ 1);
3795 memcpy (fname
, arg
, p
- arg
);
3796 fname
[p
- arg
] = '\0';
3797 /* Only accept non-stdin and existing FNAME parts, otherwise
3798 try with the full name. */
3799 if (strcmp (fname
, "-") == 0 || access (fname
, F_OK
) < 0)
3802 fname
= xstrdup (arg
);
3806 fname
= xstrdup (arg
);
3808 if (strcmp (fname
, "-") != 0 && access (fname
, F_OK
) < 0)
3809 perror_with_name (fname
);
3811 add_infile (arg
, spec_lang
);
3817 read_cmdline_option (&global_options
, &global_options_set
,
3818 decoded_options
+ j
, UNKNOWN_LOCATION
,
3819 CL_DRIVER
, &handlers
, global_dc
);
3822 /* If -save-temps=obj and -o name, create the prefix to use for %b.
3823 Otherwise just make -save-temps=obj the same as -save-temps=cwd. */
3824 if (save_temps_flag
== SAVE_TEMPS_OBJ
&& save_temps_prefix
!= NULL
)
3826 save_temps_length
= strlen (save_temps_prefix
);
3827 temp
= strrchr (lbasename (save_temps_prefix
), '.');
3830 save_temps_length
-= strlen (temp
);
3831 save_temps_prefix
[save_temps_length
] = '\0';
3835 else if (save_temps_prefix
!= NULL
)
3837 free (save_temps_prefix
);
3838 save_temps_prefix
= NULL
;
3841 if (save_temps_flag
&& use_pipes
)
3843 /* -save-temps overrides -pipe, so that temp files are produced */
3844 if (save_temps_flag
)
3845 warning (0, "-pipe ignored because -save-temps specified");
3851 const char *gcd
= getenv ("GCC_COMPARE_DEBUG");
3853 if (gcd
&& gcd
[0] == '-')
3856 compare_debug_opt
= gcd
;
3858 else if (gcd
&& *gcd
&& strcmp (gcd
, "0"))
3861 compare_debug_opt
= "-gtoggle";
3864 else if (compare_debug
< 0)
3867 gcc_assert (!compare_debug_opt
);
3870 /* Set up the search paths. We add directories that we expect to
3871 contain GNU Toolchain components before directories specified by
3872 the machine description so that we will find GNU components (like
3873 the GNU assembler) before those of the host system. */
3875 /* If we don't know where the toolchain has been installed, use the
3876 configured-in locations. */
3877 if (!gcc_exec_prefix
)
3880 add_prefix (&exec_prefixes
, standard_libexec_prefix
, "GCC",
3881 PREFIX_PRIORITY_LAST
, 1, 0);
3882 add_prefix (&exec_prefixes
, standard_libexec_prefix
, "BINUTILS",
3883 PREFIX_PRIORITY_LAST
, 2, 0);
3884 add_prefix (&exec_prefixes
, standard_exec_prefix
, "BINUTILS",
3885 PREFIX_PRIORITY_LAST
, 2, 0);
3887 add_prefix (&startfile_prefixes
, standard_exec_prefix
, "BINUTILS",
3888 PREFIX_PRIORITY_LAST
, 1, 0);
3891 gcc_assert (!IS_ABSOLUTE_PATH (tooldir_base_prefix
));
3892 tooldir_prefix
= concat (tooldir_base_prefix
, spec_machine
,
3893 dir_separator_str
, NULL
);
3895 /* Look for tools relative to the location from which the driver is
3896 running, or, if that is not available, the configured prefix. */
3898 = concat (gcc_exec_prefix
? gcc_exec_prefix
: standard_exec_prefix
,
3899 spec_machine
, dir_separator_str
,
3900 spec_version
, dir_separator_str
, tooldir_prefix
, NULL
);
3902 add_prefix (&exec_prefixes
,
3903 concat (tooldir_prefix
, "bin", dir_separator_str
, NULL
),
3904 "BINUTILS", PREFIX_PRIORITY_LAST
, 0, 0);
3905 add_prefix (&startfile_prefixes
,
3906 concat (tooldir_prefix
, "lib", dir_separator_str
, NULL
),
3907 "BINUTILS", PREFIX_PRIORITY_LAST
, 0, 1);
3909 #if defined(TARGET_SYSTEM_ROOT_RELOCATABLE) && !defined(VMS)
3910 /* If the normal TARGET_SYSTEM_ROOT is inside of $exec_prefix,
3911 then consider it to relocate with the rest of the GCC installation
3912 if GCC_EXEC_PREFIX is set.
3913 ``make_relative_prefix'' is not compiled for VMS, so don't call it. */
3914 if (target_system_root
&& !target_system_root_changed
&& gcc_exec_prefix
)
3916 char *tmp_prefix
= get_relative_prefix (decoded_options
[0].arg
,
3917 standard_bindir_prefix
,
3918 target_system_root
);
3919 if (tmp_prefix
&& access_check (tmp_prefix
, F_OK
) == 0)
3921 target_system_root
= tmp_prefix
;
3922 target_system_root_changed
= 1;
3927 /* More prefixes are enabled in main, after we read the specs file
3928 and determine whether this is cross-compilation or not. */
3930 if (n_infiles
== last_language_n_infiles
&& spec_lang
!= 0)
3931 warning (0, "%<-x %s%> after last input file has no effect", spec_lang
);
3933 if (compare_debug
== 2 || compare_debug
== 3)
3936 switches
[n_switches
].part1
= concat ("fcompare-debug=",
3939 switches
[n_switches
].args
= 0;
3940 switches
[n_switches
].live_cond
= 0;
3941 switches
[n_switches
].validated
= 0;
3942 switches
[n_switches
].ordering
= 0;
3947 /* Ensure we only invoke each subprocess once. */
3948 if (print_subprocess_help
|| print_help_list
|| print_version
)
3952 /* Create a dummy input file, so that we can pass
3953 the help option on to the various sub-processes. */
3954 add_infile ("help-dummy", "c");
3958 switches
[n_switches
].part1
= 0;
3960 infiles
[n_infiles
].name
= 0;
3963 /* Store switches not filtered out by %<S in spec in COLLECT_GCC_OPTIONS
3964 and place that in the environment. */
3967 set_collect_gcc_options (void)
3972 /* Build COLLECT_GCC_OPTIONS to have all of the options specified to
3974 obstack_grow (&collect_obstack
, "COLLECT_GCC_OPTIONS=",
3975 sizeof ("COLLECT_GCC_OPTIONS=") - 1);
3978 for (i
= 0; (int) i
< n_switches
; i
++)
3980 const char *const *args
;
3983 obstack_grow (&collect_obstack
, " ", 1);
3987 /* Ignore elided switches. */
3988 if ((switches
[i
].live_cond
3989 & (SWITCH_IGNORE
| SWITCH_KEEP_FOR_GCC
))
3993 obstack_grow (&collect_obstack
, "'-", 2);
3994 q
= switches
[i
].part1
;
3995 while ((p
= strchr (q
, '\'')))
3997 obstack_grow (&collect_obstack
, q
, p
- q
);
3998 obstack_grow (&collect_obstack
, "'\\''", 4);
4001 obstack_grow (&collect_obstack
, q
, strlen (q
));
4002 obstack_grow (&collect_obstack
, "'", 1);
4004 for (args
= switches
[i
].args
; args
&& *args
; args
++)
4006 obstack_grow (&collect_obstack
, " '", 2);
4008 while ((p
= strchr (q
, '\'')))
4010 obstack_grow (&collect_obstack
, q
, p
- q
);
4011 obstack_grow (&collect_obstack
, "'\\''", 4);
4014 obstack_grow (&collect_obstack
, q
, strlen (q
));
4015 obstack_grow (&collect_obstack
, "'", 1);
4018 obstack_grow (&collect_obstack
, "\0", 1);
4019 xputenv (XOBFINISH (&collect_obstack
, char *));
4022 /* Process a spec string, accumulating and running commands. */
4024 /* These variables describe the input file name.
4025 input_file_number is the index on outfiles of this file,
4026 so that the output file name can be stored for later use by %o.
4027 input_basename is the start of the part of the input file
4028 sans all directory names, and basename_length is the number
4029 of characters starting there excluding the suffix .c or whatever. */
4031 static const char *gcc_input_filename
;
4032 static int input_file_number
;
4033 size_t input_filename_length
;
4034 static int basename_length
;
4035 static int suffixed_basename_length
;
4036 static const char *input_basename
;
4037 static const char *input_suffix
;
4038 #ifndef HOST_LACKS_INODE_NUMBERS
4039 static struct stat input_stat
;
4041 static int input_stat_set
;
4043 /* The compiler used to process the current input file. */
4044 static struct compiler
*input_file_compiler
;
4046 /* These are variables used within do_spec and do_spec_1. */
4048 /* Nonzero if an arg has been started and not yet terminated
4049 (with space, tab or newline). */
4050 static int arg_going
;
4052 /* Nonzero means %d or %g has been seen; the next arg to be terminated
4053 is a temporary file name. */
4054 static int delete_this_arg
;
4056 /* Nonzero means %w has been seen; the next arg to be terminated
4057 is the output file name of this compilation. */
4058 static int this_is_output_file
;
4060 /* Nonzero means %s has been seen; the next arg to be terminated
4061 is the name of a library file and we should try the standard
4062 search dirs for it. */
4063 static int this_is_library_file
;
4065 /* Nonzero means %T has been seen; the next arg to be terminated
4066 is the name of a linker script and we should try all of the
4067 standard search dirs for it. If it is found insert a --script
4068 command line switch and then substitute the full path in place,
4069 otherwise generate an error message. */
4070 static int this_is_linker_script
;
4072 /* Nonzero means that the input of this command is coming from a pipe. */
4073 static int input_from_pipe
;
4075 /* Nonnull means substitute this for any suffix when outputting a switches
4077 static const char *suffix_subst
;
4079 /* If there is an argument being accumulated, terminate it and store it. */
4082 end_going_arg (void)
4088 obstack_1grow (&obstack
, 0);
4089 string
= XOBFINISH (&obstack
, const char *);
4090 if (this_is_library_file
)
4091 string
= find_file (string
);
4092 if (this_is_linker_script
)
4094 char * full_script_path
= find_a_file (&startfile_prefixes
, string
, R_OK
, true);
4096 if (full_script_path
== NULL
)
4098 error ("unable to locate default linker script %qs in the library search paths", string
);
4099 /* Script was not found on search path. */
4102 store_arg ("--script", false, false);
4103 string
= full_script_path
;
4105 store_arg (string
, delete_this_arg
, this_is_output_file
);
4106 if (this_is_output_file
)
4107 outfiles
[input_file_number
] = string
;
4113 /* Parse the WRAPPER string which is a comma separated list of the command line
4114 and insert them into the beginning of argbuf. */
4117 insert_wrapper (const char *wrapper
)
4121 char *buf
= xstrdup (wrapper
);
4123 unsigned int old_length
= VEC_length (const_char_p
, argbuf
);
4131 while ((p
= strchr (p
, ',')) != NULL
);
4133 VEC_safe_grow (const_char_p
, heap
, argbuf
, old_length
+ n
);
4134 memmove (VEC_address (const_char_p
, argbuf
) + n
,
4135 VEC_address (const_char_p
, argbuf
),
4136 old_length
* sizeof (const_char_p
));
4147 VEC_replace (const_char_p
, argbuf
, i
, p
);
4150 while ((p
= strchr (p
, ',')) != NULL
);
4151 gcc_assert (i
== n
);
4154 /* Process the spec SPEC and run the commands specified therein.
4155 Returns 0 if the spec is successfully processed; -1 if failed. */
4158 do_spec (const char *spec
)
4162 value
= do_spec_2 (spec
);
4164 /* Force out any unfinished command.
4165 If -pipe, this forces out the last command if it ended in `|'. */
4168 if (VEC_length (const_char_p
, argbuf
) > 0
4169 && !strcmp (VEC_last (const_char_p
, argbuf
), "|"))
4170 VEC_pop (const_char_p
, argbuf
);
4172 set_collect_gcc_options ();
4174 if (VEC_length (const_char_p
, argbuf
) > 0)
4182 do_spec_2 (const char *spec
)
4188 delete_this_arg
= 0;
4189 this_is_output_file
= 0;
4190 this_is_library_file
= 0;
4191 this_is_linker_script
= 0;
4192 input_from_pipe
= 0;
4193 suffix_subst
= NULL
;
4195 result
= do_spec_1 (spec
, 0, NULL
);
4203 /* Process the given spec string and add any new options to the end
4204 of the switches/n_switches array. */
4207 do_option_spec (const char *name
, const char *spec
)
4209 unsigned int i
, value_count
, value_len
;
4210 const char *p
, *q
, *value
;
4211 char *tmp_spec
, *tmp_spec_p
;
4213 if (configure_default_options
[0].name
== NULL
)
4216 for (i
= 0; i
< ARRAY_SIZE (configure_default_options
); i
++)
4217 if (strcmp (configure_default_options
[i
].name
, name
) == 0)
4219 if (i
== ARRAY_SIZE (configure_default_options
))
4222 value
= configure_default_options
[i
].value
;
4223 value_len
= strlen (value
);
4225 /* Compute the size of the final spec. */
4228 while ((p
= strstr (p
, "%(VALUE)")) != NULL
)
4234 /* Replace each %(VALUE) by the specified value. */
4235 tmp_spec
= (char *) alloca (strlen (spec
) + 1
4236 + value_count
* (value_len
- strlen ("%(VALUE)")));
4237 tmp_spec_p
= tmp_spec
;
4239 while ((p
= strstr (q
, "%(VALUE)")) != NULL
)
4241 memcpy (tmp_spec_p
, q
, p
- q
);
4242 tmp_spec_p
= tmp_spec_p
+ (p
- q
);
4243 memcpy (tmp_spec_p
, value
, value_len
);
4244 tmp_spec_p
+= value_len
;
4245 q
= p
+ strlen ("%(VALUE)");
4247 strcpy (tmp_spec_p
, q
);
4249 do_self_spec (tmp_spec
);
4252 /* Process the given spec string and add any new options to the end
4253 of the switches/n_switches array. */
4256 do_self_spec (const char *spec
)
4261 do_spec_1 (" ", 0, NULL
);
4263 /* Mark %<S switches processed by do_self_spec to be ignored permanently.
4264 do_self_specs adds the replacements to switches array, so it shouldn't
4265 be processed afterwards. */
4266 for (i
= 0; i
< n_switches
; i
++)
4267 if ((switches
[i
].live_cond
& SWITCH_IGNORE
))
4268 switches
[i
].live_cond
|= SWITCH_IGNORE_PERMANENTLY
;
4270 if (VEC_length (const_char_p
, argbuf
) > 0)
4272 const char **argbuf_copy
;
4273 struct cl_decoded_option
*decoded_options
;
4274 struct cl_option_handlers handlers
;
4275 unsigned int decoded_options_count
;
4278 /* Create a copy of argbuf with a dummy argv[0] entry for
4279 decode_cmdline_options_to_array. */
4280 argbuf_copy
= XNEWVEC (const char *,
4281 VEC_length (const_char_p
, argbuf
) + 1);
4282 argbuf_copy
[0] = "";
4283 memcpy (argbuf_copy
+ 1, VEC_address (const_char_p
, argbuf
),
4284 VEC_length (const_char_p
, argbuf
) * sizeof (const char *));
4286 decode_cmdline_options_to_array (VEC_length (const_char_p
, argbuf
) + 1,
4288 CL_DRIVER
, &decoded_options
,
4289 &decoded_options_count
);
4291 set_option_handlers (&handlers
);
4293 for (j
= 1; j
< decoded_options_count
; j
++)
4295 switch (decoded_options
[j
].opt_index
)
4297 case OPT_SPECIAL_input_file
:
4298 /* Specs should only generate options, not input
4300 if (strcmp (decoded_options
[j
].arg
, "-") != 0)
4301 fatal_error ("switch %qs does not start with %<-%>",
4302 decoded_options
[j
].arg
);
4304 fatal_error ("spec-generated switch is just %<-%>");
4307 case OPT_fcompare_debug_second
:
4308 case OPT_fcompare_debug
:
4309 case OPT_fcompare_debug_
:
4311 /* Avoid duplicate processing of some options from
4312 compare-debug specs; just save them here. */
4313 save_switch (decoded_options
[j
].canonical_option
[0],
4314 (decoded_options
[j
].canonical_option_num_elements
4316 &decoded_options
[j
].canonical_option
[1], false);
4320 read_cmdline_option (&global_options
, &global_options_set
,
4321 decoded_options
+ j
, UNKNOWN_LOCATION
,
4322 CL_DRIVER
, &handlers
, global_dc
);
4328 switches
[n_switches
].part1
= 0;
4332 /* Callback for processing %D and %I specs. */
4334 struct spec_path_info
{
4339 bool separate_options
;
4343 spec_path (char *path
, void *data
)
4345 struct spec_path_info
*info
= (struct spec_path_info
*) data
;
4349 if (info
->omit_relative
&& !IS_ABSOLUTE_PATH (path
))
4352 if (info
->append_len
!= 0)
4354 len
= strlen (path
);
4355 memcpy (path
+ len
, info
->append
, info
->append_len
+ 1);
4358 if (!is_directory (path
, true))
4361 do_spec_1 (info
->option
, 1, NULL
);
4362 if (info
->separate_options
)
4363 do_spec_1 (" ", 0, NULL
);
4365 if (info
->append_len
== 0)
4367 len
= strlen (path
);
4368 save
= path
[len
- 1];
4369 if (IS_DIR_SEPARATOR (path
[len
- 1]))
4370 path
[len
- 1] = '\0';
4373 do_spec_1 (path
, 1, NULL
);
4374 do_spec_1 (" ", 0, NULL
);
4376 /* Must not damage the original path. */
4377 if (info
->append_len
== 0)
4378 path
[len
- 1] = save
;
4383 /* Create a temporary FILE with the contents of ARGV. Add @FILE to the
4387 create_at_file (char **argv
)
4389 char *temp_file
= make_temp_file ("");
4390 char *at_argument
= concat ("@", temp_file
, NULL
);
4391 FILE *f
= fopen (temp_file
, "w");
4395 fatal_error ("could not open temporary response file %s",
4398 status
= writeargv (argv
, f
);
4401 fatal_error ("could not write to temporary response file %s",
4404 status
= fclose (f
);
4407 fatal_error ("could not close temporary response file %s",
4410 store_arg (at_argument
, 0, 0);
4412 record_temp_file (temp_file
, !save_temps_flag
, !save_temps_flag
);
4415 /* True if we should compile INFILE. */
4418 compile_input_file_p (struct infile
*infile
)
4420 if ((!infile
->language
) || (infile
->language
[0] != '*'))
4421 if (infile
->incompiler
== input_file_compiler
)
4426 /* Process each member of VEC as a spec. */
4429 do_specs_vec (VEC(char_p
,heap
) *vec
)
4434 FOR_EACH_VEC_ELT (char_p
, vec
, ix
, opt
)
4436 do_spec_1 (opt
, 1, NULL
);
4437 /* Make each accumulated option a separate argument. */
4438 do_spec_1 (" ", 0, NULL
);
4442 /* Process the sub-spec SPEC as a portion of a larger spec.
4443 This is like processing a whole spec except that we do
4444 not initialize at the beginning and we do not supply a
4445 newline by default at the end.
4446 INSWITCH nonzero means don't process %-sequences in SPEC;
4447 in this case, % is treated as an ordinary character.
4448 This is used while substituting switches.
4449 INSWITCH nonzero also causes SPC not to terminate an argument.
4451 Value is zero unless a line was finished
4452 and the command on that line reported an error. */
4455 do_spec_1 (const char *spec
, int inswitch
, const char *soft_matched_part
)
4457 const char *p
= spec
;
4462 /* If it's an empty string argument to a switch, keep it as is. */
4463 if (inswitch
&& !*p
)
4467 /* If substituting a switch, treat all chars like letters.
4468 Otherwise, NL, SPC, TAB and % are special. */
4469 switch (inswitch
? 'a' : c
)
4474 if (VEC_length (const_char_p
, argbuf
) > 0
4475 && !strcmp (VEC_last (const_char_p
, argbuf
), "|"))
4477 /* A `|' before the newline means use a pipe here,
4478 but only if -pipe was specified.
4479 Otherwise, execute now and don't pass the `|' as an arg. */
4482 input_from_pipe
= 1;
4486 VEC_pop (const_char_p
, argbuf
);
4489 set_collect_gcc_options ();
4491 if (VEC_length (const_char_p
, argbuf
) > 0)
4497 /* Reinitialize for a new command, and for a new argument. */
4500 delete_this_arg
= 0;
4501 this_is_output_file
= 0;
4502 this_is_library_file
= 0;
4503 this_is_linker_script
= 0;
4504 input_from_pipe
= 0;
4511 obstack_1grow (&obstack
, c
);
4519 /* Reinitialize for a new argument. */
4520 delete_this_arg
= 0;
4521 this_is_output_file
= 0;
4522 this_is_library_file
= 0;
4523 this_is_linker_script
= 0;
4530 fatal_error ("spec %qs invalid", spec
);
4533 if (save_temps_length
)
4534 obstack_grow (&obstack
, save_temps_prefix
, save_temps_length
);
4536 obstack_grow (&obstack
, input_basename
, basename_length
);
4537 if (compare_debug
< 0)
4538 obstack_grow (&obstack
, ".gk", 3);
4543 if (save_temps_length
)
4544 obstack_grow (&obstack
, save_temps_prefix
, save_temps_length
);
4546 obstack_grow (&obstack
, input_basename
, suffixed_basename_length
);
4547 if (compare_debug
< 0)
4548 obstack_grow (&obstack
, ".gk", 3);
4553 delete_this_arg
= 2;
4556 /* Dump out the directories specified with LIBRARY_PATH,
4557 followed by the absolute directories
4558 that we search for startfiles. */
4561 struct spec_path_info info
;
4564 info
.append_len
= 0;
4565 #ifdef RELATIVE_PREFIX_NOT_LINKDIR
4566 /* Used on systems which record the specified -L dirs
4567 and use them to search for dynamic linking.
4568 Relative directories always come from -B,
4569 and it is better not to use them for searching
4570 at run time. In particular, stage1 loses. */
4571 info
.omit_relative
= true;
4573 info
.omit_relative
= false;
4575 info
.separate_options
= false;
4577 for_each_path (&startfile_prefixes
, true, 0, spec_path
, &info
);
4582 /* %efoo means report an error with `foo' as error message
4583 and don't execute any more commands for this file. */
4587 while (*p
!= 0 && *p
!= '\n')
4589 buf
= (char *) alloca (p
- q
+ 1);
4590 strncpy (buf
, q
, p
- q
);
4592 error ("%s", _(buf
));
4597 /* %nfoo means report a notice with `foo' on stderr. */
4601 while (*p
!= 0 && *p
!= '\n')
4603 buf
= (char *) alloca (p
- q
+ 1);
4604 strncpy (buf
, q
, p
- q
);
4606 inform (0, "%s", _(buf
));
4616 /* If save_temps_flag is off, and the HOST_BIT_BUCKET is
4617 defined, and it is not a directory, and it is
4618 writable, use it. Otherwise, treat this like any
4619 other temporary file. */
4621 if ((!save_temps_flag
)
4622 && (stat (HOST_BIT_BUCKET
, &st
) == 0) && (!S_ISDIR (st
.st_mode
))
4623 && (access (HOST_BIT_BUCKET
, W_OK
) == 0))
4625 obstack_grow (&obstack
, HOST_BIT_BUCKET
,
4626 strlen (HOST_BIT_BUCKET
));
4627 delete_this_arg
= 0;
4632 goto create_temp_file
;
4636 obstack_1grow (&obstack
, '-');
4637 delete_this_arg
= 0;
4640 /* consume suffix */
4641 while (*p
== '.' || ISALNUM ((unsigned char) *p
))
4643 if (p
[0] == '%' && p
[1] == 'O')
4648 goto create_temp_file
;
4652 /* consume suffix */
4653 while (*p
== '.' || ISALNUM ((unsigned char) *p
))
4655 if (p
[0] == '%' && p
[1] == 'O')
4660 goto create_temp_file
;
4666 struct temp_name
*t
;
4668 const char *suffix
= p
;
4669 char *saved_suffix
= NULL
;
4671 while (*p
== '.' || ISALNUM ((unsigned char) *p
))
4673 suffix_length
= p
- suffix
;
4674 if (p
[0] == '%' && p
[1] == 'O')
4677 /* We don't support extra suffix characters after %O. */
4678 if (*p
== '.' || ISALNUM ((unsigned char) *p
))
4679 fatal_error ("spec %qs has invalid %<%%0%c%>", spec
, *p
);
4680 if (suffix_length
== 0)
4681 suffix
= TARGET_OBJECT_SUFFIX
;
4685 = XNEWVEC (char, suffix_length
4686 + strlen (TARGET_OBJECT_SUFFIX
));
4687 strncpy (saved_suffix
, suffix
, suffix_length
);
4688 strcpy (saved_suffix
+ suffix_length
,
4689 TARGET_OBJECT_SUFFIX
);
4691 suffix_length
+= strlen (TARGET_OBJECT_SUFFIX
);
4694 if (compare_debug
< 0)
4696 suffix
= concat (".gk", suffix
, NULL
);
4700 /* If -save-temps=obj and -o were specified, use that for the
4702 if (save_temps_length
)
4705 temp_filename_length
4706 = save_temps_length
+ suffix_length
+ 1;
4707 tmp
= (char *) alloca (temp_filename_length
);
4708 memcpy (tmp
, save_temps_prefix
, save_temps_length
);
4709 memcpy (tmp
+ save_temps_length
, suffix
, suffix_length
);
4710 tmp
[save_temps_length
+ suffix_length
] = '\0';
4711 temp_filename
= save_string (tmp
,
4712 temp_filename_length
+ 1);
4713 obstack_grow (&obstack
, temp_filename
,
4714 temp_filename_length
);
4716 delete_this_arg
= 0;
4720 /* If the gcc_input_filename has the same suffix specified
4721 for the %g, %u, or %U, and -save-temps is specified,
4722 we could end up using that file as an intermediate
4723 thus clobbering the user's source file (.e.g.,
4724 gcc -save-temps foo.s would clobber foo.s with the
4725 output of cpp0). So check for this condition and
4726 generate a temp file as the intermediate. */
4728 if (save_temps_flag
)
4731 temp_filename_length
= basename_length
+ suffix_length
+ 1;
4732 tmp
= (char *) alloca (temp_filename_length
);
4733 memcpy (tmp
, input_basename
, basename_length
);
4734 memcpy (tmp
+ basename_length
, suffix
, suffix_length
);
4735 tmp
[basename_length
+ suffix_length
] = '\0';
4736 temp_filename
= tmp
;
4738 if (strcmp (temp_filename
, gcc_input_filename
) != 0)
4740 #ifndef HOST_LACKS_INODE_NUMBERS
4741 struct stat st_temp
;
4743 /* Note, set_input() resets input_stat_set to 0. */
4744 if (input_stat_set
== 0)
4746 input_stat_set
= stat (gcc_input_filename
,
4748 if (input_stat_set
>= 0)
4752 /* If we have the stat for the gcc_input_filename
4753 and we can do the stat for the temp_filename
4754 then the they could still refer to the same
4755 file if st_dev/st_ino's are the same. */
4756 if (input_stat_set
!= 1
4757 || stat (temp_filename
, &st_temp
) < 0
4758 || input_stat
.st_dev
!= st_temp
.st_dev
4759 || input_stat
.st_ino
!= st_temp
.st_ino
)
4761 /* Just compare canonical pathnames. */
4762 char* input_realname
= lrealpath (gcc_input_filename
);
4763 char* temp_realname
= lrealpath (temp_filename
);
4764 bool files_differ
= strcmp (input_realname
, temp_realname
);
4765 free (input_realname
);
4766 free (temp_realname
);
4770 temp_filename
= save_string (temp_filename
,
4771 temp_filename_length
+ 1);
4772 obstack_grow (&obstack
, temp_filename
,
4773 temp_filename_length
);
4775 delete_this_arg
= 0;
4781 /* See if we already have an association of %g/%u/%U and
4783 for (t
= temp_names
; t
; t
= t
->next
)
4784 if (t
->length
== suffix_length
4785 && strncmp (t
->suffix
, suffix
, suffix_length
) == 0
4786 && t
->unique
== (c
== 'u' || c
== 'U' || c
== 'j'))
4789 /* Make a new association if needed. %u and %j
4791 if (t
== 0 || c
== 'u' || c
== 'j')
4795 t
= XNEW (struct temp_name
);
4796 t
->next
= temp_names
;
4799 t
->length
= suffix_length
;
4802 t
->suffix
= saved_suffix
;
4803 saved_suffix
= NULL
;
4806 t
->suffix
= save_string (suffix
, suffix_length
);
4807 t
->unique
= (c
== 'u' || c
== 'U' || c
== 'j');
4808 temp_filename
= make_temp_file (t
->suffix
);
4809 temp_filename_length
= strlen (temp_filename
);
4810 t
->filename
= temp_filename
;
4811 t
->filename_length
= temp_filename_length
;
4815 free (saved_suffix
);
4817 obstack_grow (&obstack
, t
->filename
, t
->filename_length
);
4818 delete_this_arg
= 1;
4826 if (at_file_supplied
)
4828 /* We are going to expand `%i' to `@FILE', where FILE
4829 is a newly-created temporary filename. The filenames
4830 that would usually be expanded in place of %o will be
4831 written to the temporary file. */
4836 for (i
= 0; i
< n_infiles
; i
++)
4837 if (compile_input_file_p (&infiles
[i
]))
4840 argv
= (char **) alloca (sizeof (char *) * (n_files
+ 1));
4842 /* Copy the strings over. */
4843 for (i
= 0, j
= 0; i
< n_infiles
; i
++)
4844 if (compile_input_file_p (&infiles
[i
]))
4846 argv
[j
] = CONST_CAST (char *, infiles
[i
].name
);
4847 infiles
[i
].compiled
= true;
4852 create_at_file (argv
);
4855 for (i
= 0; (int) i
< n_infiles
; i
++)
4856 if (compile_input_file_p (&infiles
[i
]))
4858 store_arg (infiles
[i
].name
, 0, 0);
4859 infiles
[i
].compiled
= true;
4864 obstack_grow (&obstack
, gcc_input_filename
,
4865 input_filename_length
);
4872 struct spec_path_info info
;
4876 do_spec_1 ("-imultilib", 1, NULL
);
4877 /* Make this a separate argument. */
4878 do_spec_1 (" ", 0, NULL
);
4879 do_spec_1 (multilib_dir
, 1, NULL
);
4880 do_spec_1 (" ", 0, NULL
);
4883 if (gcc_exec_prefix
)
4885 do_spec_1 ("-iprefix", 1, NULL
);
4886 /* Make this a separate argument. */
4887 do_spec_1 (" ", 0, NULL
);
4888 do_spec_1 (gcc_exec_prefix
, 1, NULL
);
4889 do_spec_1 (" ", 0, NULL
);
4892 if (target_system_root_changed
||
4893 (target_system_root
&& target_sysroot_hdrs_suffix
))
4895 do_spec_1 ("-isysroot", 1, NULL
);
4896 /* Make this a separate argument. */
4897 do_spec_1 (" ", 0, NULL
);
4898 do_spec_1 (target_system_root
, 1, NULL
);
4899 if (target_sysroot_hdrs_suffix
)
4900 do_spec_1 (target_sysroot_hdrs_suffix
, 1, NULL
);
4901 do_spec_1 (" ", 0, NULL
);
4904 info
.option
= "-isystem";
4905 info
.append
= "include";
4906 info
.append_len
= strlen (info
.append
);
4907 info
.omit_relative
= false;
4908 info
.separate_options
= true;
4910 for_each_path (&include_prefixes
, false, info
.append_len
,
4913 info
.append
= "include-fixed";
4914 if (*sysroot_hdrs_suffix_spec
)
4915 info
.append
= concat (info
.append
, dir_separator_str
,
4916 multilib_dir
, NULL
);
4917 info
.append_len
= strlen (info
.append
);
4918 for_each_path (&include_prefixes
, false, info
.append_len
,
4925 int max
= n_infiles
;
4926 max
+= lang_specific_extra_outfiles
;
4928 if (HAVE_GNU_LD
&& at_file_supplied
)
4930 /* We are going to expand `%o' to `@FILE', where FILE
4931 is a newly-created temporary filename. The filenames
4932 that would usually be expanded in place of %o will be
4933 written to the temporary file. */
4938 /* Convert OUTFILES into a form suitable for writeargv. */
4940 /* Determine how many are non-NULL. */
4941 for (n_files
= 0, i
= 0; i
< max
; i
++)
4942 n_files
+= outfiles
[i
] != NULL
;
4944 argv
= (char **) alloca (sizeof (char *) * (n_files
+ 1));
4946 /* Copy the strings over. */
4947 for (i
= 0, j
= 0; i
< max
; i
++)
4950 argv
[j
] = CONST_CAST (char *, outfiles
[i
]);
4955 create_at_file (argv
);
4958 for (i
= 0; i
< max
; i
++)
4960 store_arg (outfiles
[i
], 0, 0);
4965 obstack_grow (&obstack
, TARGET_OBJECT_SUFFIX
, strlen (TARGET_OBJECT_SUFFIX
));
4970 this_is_library_file
= 1;
4974 this_is_linker_script
= 1;
4978 outfiles
[input_file_number
] = NULL
;
4982 this_is_output_file
= 1;
4987 unsigned int cur_index
= VEC_length (const_char_p
, argbuf
);
4988 /* Handle the {...} following the %W. */
4990 fatal_error ("spec %qs has invalid %<%%W%c%>", spec
, *p
);
4991 p
= handle_braces (p
+ 1);
4995 /* If any args were output, mark the last one for deletion
4997 if (VEC_length (const_char_p
, argbuf
) != cur_index
)
4998 record_temp_file (VEC_last (const_char_p
, argbuf
), 0, 1);
5002 /* %x{OPTION} records OPTION for %X to output. */
5010 /* Skip past the option value and make a copy. */
5012 fatal_error ("spec %qs has invalid %<%%x%c%>", spec
, *p
);
5015 string
= save_string (p1
+ 1, p
- p1
- 2);
5017 /* See if we already recorded this option. */
5018 FOR_EACH_VEC_ELT (char_p
, linker_options
, ix
, opt
)
5019 if (! strcmp (string
, opt
))
5025 /* This option is new; add it. */
5026 add_linker_option (string
, strlen (string
));
5030 /* Dump out the options accumulated previously using %x. */
5032 do_specs_vec (linker_options
);
5035 /* Dump out the options accumulated previously using -Wa,. */
5037 do_specs_vec (assembler_options
);
5040 /* Dump out the options accumulated previously using -Wp,. */
5042 do_specs_vec (preprocessor_options
);
5045 /* Here are digits and numbers that just process
5046 a certain constant string as a spec. */
5049 value
= do_spec_1 (cc1_spec
, 0, NULL
);
5055 value
= do_spec_1 (cc1plus_spec
, 0, NULL
);
5061 value
= do_spec_1 (asm_spec
, 0, NULL
);
5067 value
= do_spec_1 (asm_final_spec
, 0, NULL
);
5074 const char *const spec
5075 = (input_file_compiler
->cpp_spec
5076 ? input_file_compiler
->cpp_spec
5078 value
= do_spec_1 (spec
, 0, NULL
);
5085 value
= do_spec_1 (endfile_spec
, 0, NULL
);
5091 value
= do_spec_1 (link_spec
, 0, NULL
);
5097 value
= do_spec_1 (lib_spec
, 0, NULL
);
5103 value
= do_spec_1 (libgcc_spec
, 0, NULL
);
5109 /* We assume there is a directory
5110 separator at the end of this string. */
5111 if (target_system_root
)
5113 obstack_grow (&obstack
, target_system_root
,
5114 strlen (target_system_root
));
5115 if (target_sysroot_suffix
)
5116 obstack_grow (&obstack
, target_sysroot_suffix
,
5117 strlen (target_sysroot_suffix
));
5122 value
= do_spec_1 (startfile_spec
, 0, NULL
);
5127 /* Here we define characters other than letters and digits. */
5130 p
= handle_braces (p
);
5136 p
= handle_spec_function (p
);
5142 obstack_1grow (&obstack
, '%');
5149 while (p
[len
] && p
[len
] != ' ' && p
[len
] != '%')
5151 suffix_subst
= save_string (p
- 1, len
+ 1);
5156 /* Henceforth ignore the option(s) matching the pattern
5162 int have_wildcard
= 0;
5167 switch_option
= SWITCH_IGNORE
| SWITCH_KEEP_FOR_GCC
;
5169 switch_option
= SWITCH_IGNORE
;
5171 while (p
[len
] && p
[len
] != ' ' && p
[len
] != '\t')
5174 if (p
[len
-1] == '*')
5177 for (i
= 0; i
< n_switches
; i
++)
5178 if (!strncmp (switches
[i
].part1
, p
, len
- have_wildcard
)
5179 && (have_wildcard
|| switches
[i
].part1
[len
] == '\0'))
5181 switches
[i
].live_cond
|= switch_option
;
5182 switches
[i
].validated
= 1;
5190 if (soft_matched_part
)
5192 if (soft_matched_part
[0])
5193 do_spec_1 (soft_matched_part
, 1, NULL
);
5194 do_spec_1 (" ", 0, NULL
);
5197 /* Catch the case where a spec string contains something like
5198 '%{foo:%*}'. i.e. there is no * in the pattern on the left
5199 hand side of the :. */
5200 error ("spec failure: %<%%*%> has not been initialized by pattern match");
5203 /* Process a string found as the value of a spec given by name.
5204 This feature allows individual machine descriptions
5205 to add and use their own specs.
5206 %[...] modifies -D options the way %P does;
5207 %(...) uses the spec unmodified. */
5209 warning (0, "use of obsolete %%[ operator in specs");
5212 const char *name
= p
;
5213 struct spec_list
*sl
;
5216 /* The string after the S/P is the name of a spec that is to be
5218 while (*p
&& *p
!= ')' && *p
!= ']')
5221 /* See if it's in the list. */
5222 for (len
= p
- name
, sl
= specs
; sl
; sl
= sl
->next
)
5223 if (sl
->name_len
== len
&& !strncmp (sl
->name
, name
, len
))
5225 name
= *(sl
->ptr_spec
);
5227 fnotice (stderr
, "Processing spec %c%s%c, which is '%s'\n",
5228 c
, sl
->name
, (c
== '(') ? ')' : ']', name
);
5237 value
= do_spec_1 (name
, 0, NULL
);
5243 char *x
= (char *) alloca (strlen (name
) * 2 + 1);
5245 const char *y
= name
;
5248 /* Copy all of NAME into BUF, but put __ after
5249 every -D and at the end of each arg. */
5252 if (! strncmp (y
, "-D", 2))
5263 && (*y
== ' ' || *y
== '\t' || *y
== '='
5264 || *y
== '}' || *y
== 0))
5277 value
= do_spec_1 (buf
, 0, NULL
);
5283 /* Discard the closing paren or bracket. */
5290 error ("spec failure: unrecognized spec option %qc", c
);
5296 /* Backslash: treat next character as ordinary. */
5301 /* Ordinary character: put it into the current argument. */
5302 obstack_1grow (&obstack
, c
);
5306 /* End of string. If we are processing a spec function, we need to
5307 end any pending argument. */
5308 if (processing_spec_function
)
5314 /* Look up a spec function. */
5316 static const struct spec_function
*
5317 lookup_spec_function (const char *name
)
5319 const struct spec_function
*sf
;
5321 for (sf
= static_spec_functions
; sf
->name
!= NULL
; sf
++)
5322 if (strcmp (sf
->name
, name
) == 0)
5328 /* Evaluate a spec function. */
5331 eval_spec_function (const char *func
, const char *args
)
5333 const struct spec_function
*sf
;
5334 const char *funcval
;
5336 /* Saved spec processing context. */
5337 VEC(const_char_p
,heap
) *save_argbuf
;
5340 int save_delete_this_arg
;
5341 int save_this_is_output_file
;
5342 int save_this_is_library_file
;
5343 int save_input_from_pipe
;
5344 int save_this_is_linker_script
;
5345 const char *save_suffix_subst
;
5348 sf
= lookup_spec_function (func
);
5350 fatal_error ("unknown spec function %qs", func
);
5352 /* Push the spec processing context. */
5353 save_argbuf
= argbuf
;
5355 save_arg_going
= arg_going
;
5356 save_delete_this_arg
= delete_this_arg
;
5357 save_this_is_output_file
= this_is_output_file
;
5358 save_this_is_library_file
= this_is_library_file
;
5359 save_this_is_linker_script
= this_is_linker_script
;
5360 save_input_from_pipe
= input_from_pipe
;
5361 save_suffix_subst
= suffix_subst
;
5363 /* Create a new spec processing context, and build the function
5367 if (do_spec_2 (args
) < 0)
5368 fatal_error ("error in args to spec function %qs", func
);
5370 /* argbuf_index is an index for the next argument to be inserted, and
5371 so contains the count of the args already inserted. */
5373 funcval
= (*sf
->func
) (VEC_length (const_char_p
, argbuf
),
5374 VEC_address (const_char_p
, argbuf
));
5376 /* Pop the spec processing context. */
5377 VEC_free (const_char_p
, heap
, argbuf
);
5378 argbuf
= save_argbuf
;
5380 arg_going
= save_arg_going
;
5381 delete_this_arg
= save_delete_this_arg
;
5382 this_is_output_file
= save_this_is_output_file
;
5383 this_is_library_file
= save_this_is_library_file
;
5384 this_is_linker_script
= save_this_is_linker_script
;
5385 input_from_pipe
= save_input_from_pipe
;
5386 suffix_subst
= save_suffix_subst
;
5391 /* Handle a spec function call of the form:
5395 ARGS is processed as a spec in a separate context and split into an
5396 argument vector in the normal fashion. The function returns a string
5397 containing a spec which we then process in the caller's context, or
5398 NULL if no processing is required. */
5401 handle_spec_function (const char *p
)
5404 const char *endp
, *funcval
;
5407 processing_spec_function
++;
5409 /* Get the function name. */
5410 for (endp
= p
; *endp
!= '\0'; endp
++)
5412 if (*endp
== '(') /* ) */
5414 /* Only allow [A-Za-z0-9], -, and _ in function names. */
5415 if (!ISALNUM (*endp
) && !(*endp
== '-' || *endp
== '_'))
5416 fatal_error ("malformed spec function name");
5418 if (*endp
!= '(') /* ) */
5419 fatal_error ("no arguments for spec function");
5420 func
= save_string (p
, endp
- p
);
5423 /* Get the arguments. */
5424 for (count
= 0; *endp
!= '\0'; endp
++)
5433 else if (*endp
== '(') /* ) */
5438 fatal_error ("malformed spec function arguments");
5439 args
= save_string (p
, endp
- p
);
5442 /* p now points to just past the end of the spec function expression. */
5444 funcval
= eval_spec_function (func
, args
);
5445 if (funcval
!= NULL
&& do_spec_1 (funcval
, 0, NULL
) < 0)
5451 processing_spec_function
--;
5456 /* Inline subroutine of handle_braces. Returns true if the current
5457 input suffix matches the atom bracketed by ATOM and END_ATOM. */
5459 input_suffix_matches (const char *atom
, const char *end_atom
)
5461 return (input_suffix
5462 && !strncmp (input_suffix
, atom
, end_atom
- atom
)
5463 && input_suffix
[end_atom
- atom
] == '\0');
5466 /* Subroutine of handle_braces. Returns true if the current
5467 input file's spec name matches the atom bracketed by ATOM and END_ATOM. */
5469 input_spec_matches (const char *atom
, const char *end_atom
)
5471 return (input_file_compiler
5472 && input_file_compiler
->suffix
5473 && input_file_compiler
->suffix
[0] != '\0'
5474 && !strncmp (input_file_compiler
->suffix
+ 1, atom
,
5476 && input_file_compiler
->suffix
[end_atom
- atom
+ 1] == '\0');
5479 /* Subroutine of handle_braces. Returns true if a switch
5480 matching the atom bracketed by ATOM and END_ATOM appeared on the
5483 switch_matches (const char *atom
, const char *end_atom
, int starred
)
5486 int len
= end_atom
- atom
;
5487 int plen
= starred
? len
: -1;
5489 for (i
= 0; i
< n_switches
; i
++)
5490 if (!strncmp (switches
[i
].part1
, atom
, len
)
5491 && (starred
|| switches
[i
].part1
[len
] == '\0')
5492 && check_live_switch (i
, plen
))
5498 /* Inline subroutine of handle_braces. Mark all of the switches which
5499 match ATOM (extends to END_ATOM; STARRED indicates whether there
5500 was a star after the atom) for later processing. */
5502 mark_matching_switches (const char *atom
, const char *end_atom
, int starred
)
5505 int len
= end_atom
- atom
;
5506 int plen
= starred
? len
: -1;
5508 for (i
= 0; i
< n_switches
; i
++)
5509 if (!strncmp (switches
[i
].part1
, atom
, len
)
5510 && (starred
|| switches
[i
].part1
[len
] == '\0')
5511 && check_live_switch (i
, plen
))
5512 switches
[i
].ordering
= 1;
5515 /* Inline subroutine of handle_braces. Process all the currently
5516 marked switches through give_switch, and clear the marks. */
5518 process_marked_switches (void)
5522 for (i
= 0; i
< n_switches
; i
++)
5523 if (switches
[i
].ordering
== 1)
5525 switches
[i
].ordering
= 0;
5530 /* Handle a %{ ... } construct. P points just inside the leading {.
5531 Returns a pointer one past the end of the brace block, or 0
5532 if we call do_spec_1 and that returns -1. */
5535 handle_braces (const char *p
)
5537 const char *atom
, *end_atom
;
5538 const char *d_atom
= NULL
, *d_end_atom
= NULL
;
5539 const char *orig
= p
;
5547 bool a_must_be_last
= false;
5548 bool ordered_set
= false;
5549 bool disjunct_set
= false;
5550 bool disj_matched
= false;
5551 bool disj_starred
= true;
5552 bool n_way_choice
= false;
5553 bool n_way_matched
= false;
5555 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
5562 /* Scan one "atom" (S in the description above of %{}, possibly
5563 with '!', '.', '@', ',', or '*' modifiers). */
5565 a_is_suffix
= false;
5566 a_is_starred
= false;
5567 a_is_negated
= false;
5568 a_is_spectype
= false;
5572 p
++, a_is_negated
= true;
5576 p
++, a_is_suffix
= true;
5578 p
++, a_is_spectype
= true;
5581 while (ISIDNUM(*p
) || *p
== '-' || *p
== '+' || *p
== '='
5582 || *p
== ',' || *p
== '.' || *p
== '@')
5587 p
++, a_is_starred
= 1;
5593 /* Substitute the switch(es) indicated by the current atom. */
5595 if (disjunct_set
|| n_way_choice
|| a_is_negated
|| a_is_suffix
5596 || a_is_spectype
|| atom
== end_atom
)
5599 mark_matching_switches (atom
, end_atom
, a_is_starred
);
5602 process_marked_switches ();
5606 /* Substitute some text if the current atom appears as a switch
5608 disjunct_set
= true;
5612 if (atom
== end_atom
)
5614 if (!n_way_choice
|| disj_matched
|| *p
== '|'
5615 || a_is_negated
|| a_is_suffix
|| a_is_spectype
5619 /* An empty term may appear as the last choice of an
5620 N-way choice set; it means "otherwise". */
5621 a_must_be_last
= true;
5622 disj_matched
= !n_way_matched
;
5623 disj_starred
= false;
5627 if ((a_is_suffix
|| a_is_spectype
) && a_is_starred
)
5631 disj_starred
= false;
5633 /* Don't bother testing this atom if we already have a
5635 if (!disj_matched
&& !n_way_matched
)
5638 a_matched
= input_suffix_matches (atom
, end_atom
);
5639 else if (a_is_spectype
)
5640 a_matched
= input_spec_matches (atom
, end_atom
);
5642 a_matched
= switch_matches (atom
, end_atom
, a_is_starred
);
5644 if (a_matched
!= a_is_negated
)
5646 disj_matched
= true;
5648 d_end_atom
= end_atom
;
5655 /* Found the body, that is, the text to substitute if the
5656 current disjunction matches. */
5657 p
= process_brace_body (p
+ 1, d_atom
, d_end_atom
, disj_starred
,
5658 disj_matched
&& !n_way_matched
);
5662 /* If we have an N-way choice, reset state for the next
5666 n_way_choice
= true;
5667 n_way_matched
|= disj_matched
;
5668 disj_matched
= false;
5669 disj_starred
= true;
5670 d_atom
= d_end_atom
= NULL
;
5679 while (*p
++ != '}');
5684 fatal_error ("braced spec %qs is invalid at %qc", orig
, *p
);
5689 /* Subroutine of handle_braces. Scan and process a brace substitution body
5690 (X in the description of %{} syntax). P points one past the colon;
5691 ATOM and END_ATOM bracket the first atom which was found to be true
5692 (present) in the current disjunction; STARRED indicates whether all
5693 the atoms in the current disjunction were starred (for syntax validation);
5694 MATCHED indicates whether the disjunction matched or not, and therefore
5695 whether or not the body is to be processed through do_spec_1 or just
5696 skipped. Returns a pointer to the closing } or ;, or 0 if do_spec_1
5700 process_brace_body (const char *p
, const char *atom
, const char *end_atom
,
5701 int starred
, int matched
)
5703 const char *body
, *end_body
;
5704 unsigned int nesting_level
;
5705 bool have_subst
= false;
5707 /* Locate the closing } or ;, honoring nested braces.
5708 Trim trailing whitespace. */
5717 if (!--nesting_level
)
5720 else if (*p
== ';' && nesting_level
== 1)
5722 else if (*p
== '%' && p
[1] == '*' && nesting_level
== 1)
5724 else if (*p
== '\0')
5730 while (end_body
[-1] == ' ' || end_body
[-1] == '\t')
5733 if (have_subst
&& !starred
)
5738 /* Copy the substitution body to permanent storage and execute it.
5739 If have_subst is false, this is a simple matter of running the
5740 body through do_spec_1... */
5741 char *string
= save_string (body
, end_body
- body
);
5744 if (do_spec_1 (string
, 0, NULL
) < 0)
5749 /* ... but if have_subst is true, we have to process the
5750 body once for each matching switch, with %* set to the
5751 variant part of the switch. */
5752 unsigned int hard_match_len
= end_atom
- atom
;
5755 for (i
= 0; i
< n_switches
; i
++)
5756 if (!strncmp (switches
[i
].part1
, atom
, hard_match_len
)
5757 && check_live_switch (i
, hard_match_len
))
5759 if (do_spec_1 (string
, 0,
5760 &switches
[i
].part1
[hard_match_len
]) < 0)
5762 /* Pass any arguments this switch has. */
5764 suffix_subst
= NULL
;
5772 fatal_error ("braced spec body %qs is invalid", body
);
5775 /* Return 0 iff switch number SWITCHNUM is obsoleted by a later switch
5776 on the command line. PREFIX_LENGTH is the length of XXX in an {XXX*}
5777 spec, or -1 if either exact match or %* is used.
5779 A -O switch is obsoleted by a later -O switch. A -f, -m, or -W switch
5780 whose value does not begin with "no-" is obsoleted by the same value
5781 with the "no-", similarly for a switch with the "no-" prefix. */
5784 check_live_switch (int switchnum
, int prefix_length
)
5786 const char *name
= switches
[switchnum
].part1
;
5789 /* If we already processed this switch and determined if it was
5790 live or not, return our past determination. */
5791 if (switches
[switchnum
].live_cond
!= 0)
5792 return ((switches
[switchnum
].live_cond
& SWITCH_LIVE
) != 0
5793 && (switches
[switchnum
].live_cond
& SWITCH_FALSE
) == 0
5794 && (switches
[switchnum
].live_cond
& SWITCH_IGNORE_PERMANENTLY
)
5797 /* In the common case of {<at-most-one-letter>*}, a negating
5798 switch would always match, so ignore that case. We will just
5799 send the conflicting switches to the compiler phase. */
5800 if (prefix_length
>= 0 && prefix_length
<= 1)
5803 /* Now search for duplicate in a manner that depends on the name. */
5807 for (i
= switchnum
+ 1; i
< n_switches
; i
++)
5808 if (switches
[i
].part1
[0] == 'O')
5810 switches
[switchnum
].validated
= 1;
5811 switches
[switchnum
].live_cond
= SWITCH_FALSE
;
5816 case 'W': case 'f': case 'm':
5817 if (! strncmp (name
+ 1, "no-", 3))
5819 /* We have Xno-YYY, search for XYYY. */
5820 for (i
= switchnum
+ 1; i
< n_switches
; i
++)
5821 if (switches
[i
].part1
[0] == name
[0]
5822 && ! strcmp (&switches
[i
].part1
[1], &name
[4]))
5824 switches
[switchnum
].validated
= 1;
5825 switches
[switchnum
].live_cond
= SWITCH_FALSE
;
5831 /* We have XYYY, search for Xno-YYY. */
5832 for (i
= switchnum
+ 1; i
< n_switches
; i
++)
5833 if (switches
[i
].part1
[0] == name
[0]
5834 && switches
[i
].part1
[1] == 'n'
5835 && switches
[i
].part1
[2] == 'o'
5836 && switches
[i
].part1
[3] == '-'
5837 && !strcmp (&switches
[i
].part1
[4], &name
[1]))
5839 switches
[switchnum
].validated
= 1;
5840 switches
[switchnum
].live_cond
= SWITCH_FALSE
;
5847 /* Otherwise the switch is live. */
5848 switches
[switchnum
].live_cond
|= SWITCH_LIVE
;
5852 /* Pass a switch to the current accumulating command
5853 in the same form that we received it.
5854 SWITCHNUM identifies the switch; it is an index into
5855 the vector of switches gcc received, which is `switches'.
5856 This cannot fail since it never finishes a command line.
5858 If OMIT_FIRST_WORD is nonzero, then we omit .part1 of the argument. */
5861 give_switch (int switchnum
, int omit_first_word
)
5863 if ((switches
[switchnum
].live_cond
& SWITCH_IGNORE
) != 0)
5866 if (!omit_first_word
)
5868 do_spec_1 ("-", 0, NULL
);
5869 do_spec_1 (switches
[switchnum
].part1
, 1, NULL
);
5872 if (switches
[switchnum
].args
!= 0)
5875 for (p
= switches
[switchnum
].args
; *p
; p
++)
5877 const char *arg
= *p
;
5879 do_spec_1 (" ", 0, NULL
);
5882 unsigned length
= strlen (arg
);
5885 while (length
-- && !IS_DIR_SEPARATOR (arg
[length
]))
5886 if (arg
[length
] == '.')
5888 (CONST_CAST(char *, arg
))[length
] = 0;
5892 do_spec_1 (arg
, 1, NULL
);
5894 (CONST_CAST(char *, arg
))[length
] = '.';
5895 do_spec_1 (suffix_subst
, 1, NULL
);
5898 do_spec_1 (arg
, 1, NULL
);
5902 do_spec_1 (" ", 0, NULL
);
5903 switches
[switchnum
].validated
= 1;
5906 /* Search for a file named NAME trying various prefixes including the
5907 user's -B prefix and some standard ones.
5908 Return the absolute file name found. If nothing is found, return NAME. */
5911 find_file (const char *name
)
5913 char *newname
= find_a_file (&startfile_prefixes
, name
, R_OK
, true);
5914 return newname
? newname
: name
;
5917 /* Determine whether a directory exists. If LINKER, return 0 for
5918 certain fixed names not needed by the linker. */
5921 is_directory (const char *path1
, bool linker
)
5928 /* Ensure the string ends with "/.". The resulting path will be a
5929 directory even if the given path is a symbolic link. */
5930 len1
= strlen (path1
);
5931 path
= (char *) alloca (3 + len1
);
5932 memcpy (path
, path1
, len1
);
5934 if (!IS_DIR_SEPARATOR (cp
[-1]))
5935 *cp
++ = DIR_SEPARATOR
;
5939 /* Exclude directories that the linker is known to search. */
5941 && IS_DIR_SEPARATOR (path
[0])
5943 && strncmp (path
+ 1, "lib", 3) == 0)
5945 && strncmp (path
+ 1, "usr", 3) == 0
5946 && IS_DIR_SEPARATOR (path
[4])
5947 && strncmp (path
+ 5, "lib", 3) == 0)))
5950 return (stat (path
, &st
) >= 0 && S_ISDIR (st
.st_mode
));
5953 /* Set up the various global variables to indicate that we're processing
5954 the input file named FILENAME. */
5957 set_input (const char *filename
)
5961 gcc_input_filename
= filename
;
5962 input_filename_length
= strlen (gcc_input_filename
);
5963 input_basename
= lbasename (gcc_input_filename
);
5965 /* Find a suffix starting with the last period,
5966 and set basename_length to exclude that suffix. */
5967 basename_length
= strlen (input_basename
);
5968 suffixed_basename_length
= basename_length
;
5969 p
= input_basename
+ basename_length
;
5970 while (p
!= input_basename
&& *p
!= '.')
5972 if (*p
== '.' && p
!= input_basename
)
5974 basename_length
= p
- input_basename
;
5975 input_suffix
= p
+ 1;
5980 /* If a spec for 'g', 'u', or 'U' is seen with -save-temps then
5981 we will need to do a stat on the gcc_input_filename. The
5982 INPUT_STAT_SET signals that the stat is needed. */
5986 /* On fatal signals, delete all the temporary files. */
5989 fatal_signal (int signum
)
5991 signal (signum
, SIG_DFL
);
5992 delete_failure_queue ();
5993 delete_temp_files ();
5994 /* Get the same signal again, this time not handled,
5995 so its normal effect occurs. */
5996 kill (getpid (), signum
);
5999 /* Compare the contents of the two files named CMPFILE[0] and
6000 CMPFILE[1]. Return zero if they're identical, nonzero
6004 compare_files (char *cmpfile
[])
6007 FILE *temp
[2] = { NULL
, NULL
};
6013 void *map
[2] = { NULL
, NULL
};
6015 for (i
= 0; i
< 2; i
++)
6019 if (stat (cmpfile
[i
], &st
) < 0 || !S_ISREG (st
.st_mode
))
6021 error ("%s: could not determine length of compare-debug file %s",
6022 gcc_input_filename
, cmpfile
[i
]);
6027 length
[i
] = st
.st_size
;
6030 if (!ret
&& length
[0] != length
[1])
6032 error ("%s: -fcompare-debug failure (length)", gcc_input_filename
);
6037 for (i
= 0; i
< 2; i
++)
6039 int fd
= open (cmpfile
[i
], O_RDONLY
);
6042 error ("%s: could not open compare-debug file %s",
6043 gcc_input_filename
, cmpfile
[i
]);
6048 map
[i
] = mmap (NULL
, length
[i
], PROT_READ
, MAP_PRIVATE
, fd
, 0);
6051 if (map
[i
] == (void *) MAP_FAILED
)
6060 if (memcmp (map
[0], map
[1], length
[0]) != 0)
6062 error ("%s: -fcompare-debug failure", gcc_input_filename
);
6067 for (i
= 0; i
< 2; i
++)
6069 munmap ((caddr_t
) map
[i
], length
[i
]);
6078 for (i
= 0; i
< 2; i
++)
6080 temp
[i
] = fopen (cmpfile
[i
], "r");
6083 error ("%s: could not open compare-debug file %s",
6084 gcc_input_filename
, cmpfile
[i
]);
6090 if (!ret
&& temp
[0] && temp
[1])
6094 c0
= fgetc (temp
[0]);
6095 c1
= fgetc (temp
[1]);
6099 error ("%s: -fcompare-debug failure",
6100 gcc_input_filename
);
6109 for (i
= 1; i
>= 0; i
--)
6118 extern int main (int, char **);
6121 main (int argc
, char **argv
)
6125 int linker_was_run
= 0;
6126 int lang_n_infiles
= 0;
6127 int num_linker_inputs
= 0;
6128 char *explicit_link_files
;
6130 char *lto_wrapper_file
;
6132 struct user_specs
*uptr
;
6133 char **old_argv
= argv
;
6134 struct cl_decoded_option
*decoded_options
;
6135 unsigned int decoded_options_count
;
6137 /* Initialize here, not in definition. The IRIX 6 O32 cc sometimes chokes
6138 on ?: in file-scope variable initializations. */
6139 asm_debug
= ASM_DEBUG_SPEC
;
6141 p
= argv
[0] + strlen (argv
[0]);
6142 while (p
!= argv
[0] && !IS_DIR_SEPARATOR (p
[-1]))
6146 xmalloc_set_program_name (progname
);
6148 expandargv (&argc
, &argv
);
6150 /* Determine if any expansions were made. */
6151 if (argv
!= old_argv
)
6152 at_file_supplied
= true;
6154 global_options
= global_options_init
;
6156 decode_cmdline_options_to_array (argc
, CONST_CAST2 (const char **, char **,
6159 &decoded_options
, &decoded_options_count
);
6161 #ifdef GCC_DRIVER_HOST_INITIALIZATION
6162 /* Perform host dependent initialization when needed. */
6163 GCC_DRIVER_HOST_INITIALIZATION
;
6166 /* Unlock the stdio streams. */
6167 unlock_std_streams ();
6169 gcc_init_libintl ();
6171 diagnostic_initialize (global_dc
, 0);
6172 if (atexit (delete_temp_files
) != 0)
6173 fatal_error ("atexit failed");
6175 if (signal (SIGINT
, SIG_IGN
) != SIG_IGN
)
6176 signal (SIGINT
, fatal_signal
);
6178 if (signal (SIGHUP
, SIG_IGN
) != SIG_IGN
)
6179 signal (SIGHUP
, fatal_signal
);
6181 if (signal (SIGTERM
, SIG_IGN
) != SIG_IGN
)
6182 signal (SIGTERM
, fatal_signal
);
6184 if (signal (SIGPIPE
, SIG_IGN
) != SIG_IGN
)
6185 signal (SIGPIPE
, fatal_signal
);
6188 /* We *MUST* set SIGCHLD to SIG_DFL so that the wait4() call will
6189 receive the signal. A different setting is inheritable */
6190 signal (SIGCHLD
, SIG_DFL
);
6193 /* Allocate the argument vector. */
6196 obstack_init (&obstack
);
6198 /* Build multilib_select, et. al from the separate lines that make up each
6199 multilib selection. */
6201 const char *const *q
= multilib_raw
;
6204 obstack_init (&multilib_obstack
);
6205 while ((p
= *q
++) != (char *) 0)
6206 obstack_grow (&multilib_obstack
, p
, strlen (p
));
6208 obstack_1grow (&multilib_obstack
, 0);
6209 multilib_select
= XOBFINISH (&multilib_obstack
, const char *);
6211 q
= multilib_matches_raw
;
6212 while ((p
= *q
++) != (char *) 0)
6213 obstack_grow (&multilib_obstack
, p
, strlen (p
));
6215 obstack_1grow (&multilib_obstack
, 0);
6216 multilib_matches
= XOBFINISH (&multilib_obstack
, const char *);
6218 q
= multilib_exclusions_raw
;
6219 while ((p
= *q
++) != (char *) 0)
6220 obstack_grow (&multilib_obstack
, p
, strlen (p
));
6222 obstack_1grow (&multilib_obstack
, 0);
6223 multilib_exclusions
= XOBFINISH (&multilib_obstack
, const char *);
6226 for (i
= 0; i
< ARRAY_SIZE (multilib_defaults_raw
); i
++)
6229 obstack_1grow (&multilib_obstack
, ' ');
6230 obstack_grow (&multilib_obstack
,
6231 multilib_defaults_raw
[i
],
6232 strlen (multilib_defaults_raw
[i
]));
6236 obstack_1grow (&multilib_obstack
, 0);
6237 multilib_defaults
= XOBFINISH (&multilib_obstack
, const char *);
6240 #ifdef INIT_ENVIRONMENT
6241 /* Set up any other necessary machine specific environment variables. */
6242 xputenv (INIT_ENVIRONMENT
);
6245 /* Make a table of what switches there are (switches, n_switches).
6246 Make a table of specified input files (infiles, n_infiles).
6247 Decode switches that are handled locally. */
6249 process_command (decoded_options_count
, decoded_options
);
6251 /* Initialize the vector of specs to just the default.
6252 This means one element containing 0s, as a terminator. */
6254 compilers
= XNEWVAR (struct compiler
, sizeof default_compilers
);
6255 memcpy (compilers
, default_compilers
, sizeof default_compilers
);
6256 n_compilers
= n_default_compilers
;
6258 /* Read specs from a file if there is one. */
6260 machine_suffix
= concat (spec_machine
, dir_separator_str
,
6261 spec_version
, dir_separator_str
, NULL
);
6262 just_machine_suffix
= concat (spec_machine
, dir_separator_str
, NULL
);
6264 specs_file
= find_a_file (&startfile_prefixes
, "specs", R_OK
, true);
6265 /* Read the specs file unless it is a default one. */
6266 if (specs_file
!= 0 && strcmp (specs_file
, "specs"))
6267 read_specs (specs_file
, TRUE
);
6271 /* We need to check standard_exec_prefix/just_machine_suffix/specs
6272 for any override of as, ld and libraries. */
6273 specs_file
= (char *) alloca (strlen (standard_exec_prefix
)
6274 + strlen (just_machine_suffix
) + sizeof ("specs"));
6276 strcpy (specs_file
, standard_exec_prefix
);
6277 strcat (specs_file
, just_machine_suffix
);
6278 strcat (specs_file
, "specs");
6279 if (access (specs_file
, R_OK
) == 0)
6280 read_specs (specs_file
, TRUE
);
6282 /* Process any configure-time defaults specified for the command line
6283 options, via OPTION_DEFAULT_SPECS. */
6284 for (i
= 0; i
< ARRAY_SIZE (option_default_specs
); i
++)
6285 do_option_spec (option_default_specs
[i
].name
,
6286 option_default_specs
[i
].spec
);
6288 /* Process DRIVER_SELF_SPECS, adding any new options to the end
6289 of the command line. */
6291 for (i
= 0; i
< ARRAY_SIZE (driver_self_specs
); i
++)
6292 do_self_spec (driver_self_specs
[i
]);
6296 enum save_temps save
;
6298 if (!compare_debug_second
)
6300 n_switches_debug_check
[1] = n_switches
;
6301 n_switches_alloc_debug_check
[1] = n_switches_alloc
;
6302 switches_debug_check
[1] = XDUPVEC (struct switchstr
, switches
,
6305 do_self_spec ("%:compare-debug-self-opt()");
6306 n_switches_debug_check
[0] = n_switches
;
6307 n_switches_alloc_debug_check
[0] = n_switches_alloc
;
6308 switches_debug_check
[0] = switches
;
6310 n_switches
= n_switches_debug_check
[1];
6311 n_switches_alloc
= n_switches_alloc_debug_check
[1];
6312 switches
= switches_debug_check
[1];
6315 /* Avoid crash when computing %j in this early. */
6316 save
= save_temps_flag
;
6317 save_temps_flag
= SAVE_TEMPS_NONE
;
6319 compare_debug
= -compare_debug
;
6320 do_self_spec ("%:compare-debug-self-opt()");
6322 save_temps_flag
= save
;
6324 if (!compare_debug_second
)
6326 n_switches_debug_check
[1] = n_switches
;
6327 n_switches_alloc_debug_check
[1] = n_switches_alloc
;
6328 switches_debug_check
[1] = switches
;
6329 compare_debug
= -compare_debug
;
6330 n_switches
= n_switches_debug_check
[0];
6331 n_switches_alloc
= n_switches_debug_check
[0];
6332 switches
= switches_debug_check
[0];
6336 /* If not cross-compiling, look for executables in the standard
6338 if (*cross_compile
== '0')
6340 if (*md_exec_prefix
)
6342 add_prefix (&exec_prefixes
, md_exec_prefix
, "GCC",
6343 PREFIX_PRIORITY_LAST
, 0, 0);
6347 /* Process sysroot_suffix_spec. */
6348 if (*sysroot_suffix_spec
!= 0
6349 && do_spec_2 (sysroot_suffix_spec
) == 0)
6351 if (VEC_length (const_char_p
, argbuf
) > 1)
6352 error ("spec failure: more than one arg to SYSROOT_SUFFIX_SPEC");
6353 else if (VEC_length (const_char_p
, argbuf
) == 1)
6354 target_sysroot_suffix
= xstrdup (VEC_last (const_char_p
, argbuf
));
6357 #ifdef HAVE_LD_SYSROOT
6358 /* Pass the --sysroot option to the linker, if it supports that. If
6359 there is a sysroot_suffix_spec, it has already been processed by
6360 this point, so target_system_root really is the system root we
6362 if (target_system_root
)
6364 obstack_grow (&obstack
, "%(sysroot_spec) ", strlen ("%(sysroot_spec) "));
6365 obstack_grow0 (&obstack
, link_spec
, strlen (link_spec
));
6366 set_spec ("link", XOBFINISH (&obstack
, const char *));
6370 /* Process sysroot_hdrs_suffix_spec. */
6371 if (*sysroot_hdrs_suffix_spec
!= 0
6372 && do_spec_2 (sysroot_hdrs_suffix_spec
) == 0)
6374 if (VEC_length (const_char_p
, argbuf
) > 1)
6375 error ("spec failure: more than one arg to SYSROOT_HEADERS_SUFFIX_SPEC");
6376 else if (VEC_length (const_char_p
, argbuf
) == 1)
6377 target_sysroot_hdrs_suffix
= xstrdup (VEC_last (const_char_p
, argbuf
));
6380 /* Look for startfiles in the standard places. */
6381 if (*startfile_prefix_spec
!= 0
6382 && do_spec_2 (startfile_prefix_spec
) == 0
6383 && do_spec_1 (" ", 0, NULL
) == 0)
6387 FOR_EACH_VEC_ELT (const_char_p
, argbuf
, ndx
, arg
)
6388 add_sysrooted_prefix (&startfile_prefixes
, arg
, "BINUTILS",
6389 PREFIX_PRIORITY_LAST
, 0, 1);
6391 /* We should eventually get rid of all these and stick to
6392 startfile_prefix_spec exclusively. */
6393 else if (*cross_compile
== '0' || target_system_root
)
6395 if (*md_startfile_prefix
)
6396 add_sysrooted_prefix (&startfile_prefixes
, md_startfile_prefix
,
6397 "GCC", PREFIX_PRIORITY_LAST
, 0, 1);
6399 if (*md_startfile_prefix_1
)
6400 add_sysrooted_prefix (&startfile_prefixes
, md_startfile_prefix_1
,
6401 "GCC", PREFIX_PRIORITY_LAST
, 0, 1);
6403 /* If standard_startfile_prefix is relative, base it on
6404 standard_exec_prefix. This lets us move the installed tree
6405 as a unit. If GCC_EXEC_PREFIX is defined, base
6406 standard_startfile_prefix on that as well.
6408 If the prefix is relative, only search it for native compilers;
6409 otherwise we will search a directory containing host libraries. */
6410 if (IS_ABSOLUTE_PATH (standard_startfile_prefix
))
6411 add_sysrooted_prefix (&startfile_prefixes
,
6412 standard_startfile_prefix
, "BINUTILS",
6413 PREFIX_PRIORITY_LAST
, 0, 1);
6414 else if (*cross_compile
== '0')
6416 add_prefix (&startfile_prefixes
,
6417 concat (gcc_exec_prefix
6418 ? gcc_exec_prefix
: standard_exec_prefix
,
6420 standard_startfile_prefix
, NULL
),
6421 NULL
, PREFIX_PRIORITY_LAST
, 0, 1);
6424 /* Sysrooted prefixes are relocated because target_system_root is
6425 also relocated by gcc_exec_prefix. */
6426 if (*standard_startfile_prefix_1
)
6427 add_sysrooted_prefix (&startfile_prefixes
,
6428 standard_startfile_prefix_1
, "BINUTILS",
6429 PREFIX_PRIORITY_LAST
, 0, 1);
6430 if (*standard_startfile_prefix_2
)
6431 add_sysrooted_prefix (&startfile_prefixes
,
6432 standard_startfile_prefix_2
, "BINUTILS",
6433 PREFIX_PRIORITY_LAST
, 0, 1);
6436 /* Process any user specified specs in the order given on the command
6438 for (uptr
= user_specs_head
; uptr
; uptr
= uptr
->next
)
6440 char *filename
= find_a_file (&startfile_prefixes
, uptr
->filename
,
6442 read_specs (filename
? filename
: uptr
->filename
, FALSE
);
6445 /* If we have a GCC_EXEC_PREFIX envvar, modify it for cpp's sake. */
6446 if (gcc_exec_prefix
)
6447 gcc_exec_prefix
= concat (gcc_exec_prefix
, spec_machine
, dir_separator_str
,
6448 spec_version
, dir_separator_str
, NULL
);
6450 /* Now we have the specs.
6451 Set the `valid' bits for switches that match anything in any spec. */
6453 validate_all_switches ();
6455 /* Now that we have the switches and the specs, set
6456 the subdirectory based on the options. */
6457 set_multilib_dir ();
6459 /* Set up to remember the pathname of gcc and any options
6460 needed for collect. We use argv[0] instead of progname because
6461 we need the complete pathname. */
6462 obstack_init (&collect_obstack
);
6463 obstack_grow (&collect_obstack
, "COLLECT_GCC=", sizeof ("COLLECT_GCC=") - 1);
6464 obstack_grow (&collect_obstack
, argv
[0], strlen (argv
[0]) + 1);
6465 xputenv (XOBFINISH (&collect_obstack
, char *));
6467 /* Set up to remember the pathname of the lto wrapper. */
6469 lto_wrapper_file
= find_a_file (&exec_prefixes
, "lto-wrapper", X_OK
, false);
6470 if (lto_wrapper_file
)
6472 lto_wrapper_spec
= lto_wrapper_file
;
6473 obstack_init (&collect_obstack
);
6474 obstack_grow (&collect_obstack
, "COLLECT_LTO_WRAPPER=",
6475 sizeof ("COLLECT_LTO_WRAPPER=") - 1);
6476 obstack_grow (&collect_obstack
, lto_wrapper_spec
,
6477 strlen (lto_wrapper_spec
) + 1);
6478 xputenv (XOBFINISH (&collect_obstack
, char *));
6481 /* Warn about any switches that no pass was interested in. */
6483 for (i
= 0; (int) i
< n_switches
; i
++)
6484 if (! switches
[i
].validated
)
6485 error ("unrecognized option %<-%s%>", switches
[i
].part1
);
6487 /* Obey some of the options. */
6489 if (print_search_dirs
)
6491 printf (_("install: %s%s\n"),
6492 gcc_exec_prefix
? gcc_exec_prefix
: standard_exec_prefix
,
6493 gcc_exec_prefix
? "" : machine_suffix
);
6494 printf (_("programs: %s\n"),
6495 build_search_list (&exec_prefixes
, "", false, false));
6496 printf (_("libraries: %s\n"),
6497 build_search_list (&startfile_prefixes
, "", false, true));
6501 if (print_file_name
)
6503 printf ("%s\n", find_file (print_file_name
));
6507 if (print_prog_name
)
6509 char *newname
= find_a_file (&exec_prefixes
, print_prog_name
, X_OK
, 0);
6510 printf ("%s\n", (newname
? newname
: print_prog_name
));
6514 if (print_multi_lib
)
6516 print_multilib_info ();
6520 if (print_multi_directory
)
6522 if (multilib_dir
== NULL
)
6525 printf ("%s\n", multilib_dir
);
6531 if (target_system_root
)
6533 if (target_sysroot_suffix
)
6534 printf ("%s%s\n", target_system_root
, target_sysroot_suffix
);
6536 printf ("%s\n", target_system_root
);
6541 if (print_multi_os_directory
)
6543 if (multilib_os_dir
== NULL
)
6546 printf ("%s\n", multilib_os_dir
);
6550 if (print_sysroot_headers_suffix
)
6552 if (*sysroot_hdrs_suffix_spec
)
6554 printf("%s\n", (target_sysroot_hdrs_suffix
6555 ? target_sysroot_hdrs_suffix
6560 /* The error status indicates that only one set of fixed
6561 headers should be built. */
6562 fatal_error ("not configured with sysroot headers suffix");
6565 if (print_help_list
)
6571 printf (_("\nFor bug reporting instructions, please see:\n"));
6572 printf ("%s.\n", bug_report_url
);
6577 /* We do not exit here. Instead we have created a fake input file
6578 called 'help-dummy' which needs to be compiled, and we pass this
6579 on the various sub-processes, along with the --help switch.
6580 Ensure their output appears after ours. */
6581 fputc ('\n', stdout
);
6587 printf (_("%s %s%s\n"), progname
, pkgversion_string
,
6589 printf ("Copyright %s 2011 Free Software Foundation, Inc.\n",
6591 fputs (_("This is free software; see the source for copying conditions. There is NO\n\
6592 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\n"),
6597 /* We do not exit here. We use the same mechanism of --help to print
6598 the version of the sub-processes. */
6599 fputc ('\n', stdout
);
6608 fnotice (stderr
, "Target: %s\n", spec_machine
);
6609 fnotice (stderr
, "Configured with: %s\n", configuration_arguments
);
6611 #ifdef THREAD_MODEL_SPEC
6612 /* We could have defined THREAD_MODEL_SPEC to "%*" by default,
6613 but there's no point in doing all this processing just to get
6614 thread_model back. */
6615 obstack_init (&obstack
);
6616 do_spec_1 (THREAD_MODEL_SPEC
, 0, thread_model
);
6617 obstack_1grow (&obstack
, '\0');
6618 thrmod
= XOBFINISH (&obstack
, const char *);
6620 thrmod
= thread_model
;
6623 fnotice (stderr
, "Thread model: %s\n", thrmod
);
6625 /* compiler_version is truncated at the first space when initialized
6626 from version string, so truncate version_string at the first space
6627 before comparing. */
6628 for (n
= 0; version_string
[n
]; n
++)
6629 if (version_string
[n
] == ' ')
6632 if (! strncmp (version_string
, compiler_version
, n
)
6633 && compiler_version
[n
] == 0)
6634 fnotice (stderr
, "gcc version %s %s\n", version_string
,
6637 fnotice (stderr
, "gcc driver version %s %sexecuting gcc version %s\n",
6638 version_string
, pkgversion_string
, compiler_version
);
6644 if (n_infiles
== added_libraries
)
6645 fatal_error ("no input files");
6650 /* Make a place to record the compiler output file names
6651 that correspond to the input files. */
6654 i
+= lang_specific_extra_outfiles
;
6655 outfiles
= XCNEWVEC (const char *, i
);
6657 /* Record which files were specified explicitly as link input. */
6659 explicit_link_files
= XCNEWVEC (char, n_infiles
);
6661 combine_inputs
= have_o
|| flag_wpa
;
6663 for (i
= 0; (int) i
< n_infiles
; i
++)
6665 const char *name
= infiles
[i
].name
;
6666 struct compiler
*compiler
= lookup_compiler (name
,
6668 infiles
[i
].language
);
6670 if (compiler
&& !(compiler
->combinable
))
6671 combine_inputs
= false;
6673 if (lang_n_infiles
> 0 && compiler
!= input_file_compiler
6674 && infiles
[i
].language
&& infiles
[i
].language
[0] != '*')
6675 infiles
[i
].incompiler
= compiler
;
6679 input_file_compiler
= compiler
;
6680 infiles
[i
].incompiler
= compiler
;
6684 /* Since there is no compiler for this input file, assume it is a
6686 explicit_link_files
[i
] = 1;
6687 infiles
[i
].incompiler
= NULL
;
6689 infiles
[i
].compiled
= false;
6690 infiles
[i
].preprocessed
= false;
6693 if (!combine_inputs
&& have_c
&& have_o
&& lang_n_infiles
> 1)
6694 fatal_error ("cannot specify -o with -c, -S or -E with multiple files");
6696 for (i
= 0; (int) i
< n_infiles
; i
++)
6698 int this_file_error
= 0;
6700 /* Tell do_spec what to substitute for %i. */
6702 input_file_number
= i
;
6703 set_input (infiles
[i
].name
);
6705 if (infiles
[i
].compiled
)
6708 /* Use the same thing in %o, unless cp->spec says otherwise. */
6710 outfiles
[i
] = gcc_input_filename
;
6712 /* Figure out which compiler from the file's suffix. */
6715 = lookup_compiler (infiles
[i
].name
, input_filename_length
,
6716 infiles
[i
].language
);
6718 if (input_file_compiler
)
6720 /* Ok, we found an applicable compiler. Run its spec. */
6722 if (input_file_compiler
->spec
[0] == '#')
6724 error ("%s: %s compiler not installed on this system",
6725 gcc_input_filename
, &input_file_compiler
->spec
[1]);
6726 this_file_error
= 1;
6732 if (debug_check_temp_file
[0])
6733 free (debug_check_temp_file
[0]);
6734 debug_check_temp_file
[0] = NULL
;
6736 if (debug_check_temp_file
[1])
6737 free (debug_check_temp_file
[1]);
6738 debug_check_temp_file
[1] = NULL
;
6741 value
= do_spec (input_file_compiler
->spec
);
6742 infiles
[i
].compiled
= true;
6744 this_file_error
= 1;
6745 else if (compare_debug
&& debug_check_temp_file
[0])
6748 inform (0, "recompiling with -fcompare-debug");
6750 compare_debug
= -compare_debug
;
6751 n_switches
= n_switches_debug_check
[1];
6752 n_switches_alloc
= n_switches_alloc_debug_check
[1];
6753 switches
= switches_debug_check
[1];
6755 value
= do_spec (input_file_compiler
->spec
);
6757 compare_debug
= -compare_debug
;
6758 n_switches
= n_switches_debug_check
[0];
6759 n_switches_alloc
= n_switches_alloc_debug_check
[0];
6760 switches
= switches_debug_check
[0];
6764 error ("during -fcompare-debug recompilation");
6765 this_file_error
= 1;
6768 gcc_assert (debug_check_temp_file
[1]
6769 && strcmp (debug_check_temp_file
[0],
6770 debug_check_temp_file
[1]));
6773 inform (0, "comparing final insns dumps");
6775 if (compare_files (debug_check_temp_file
))
6776 this_file_error
= 1;
6781 if (debug_check_temp_file
[0])
6782 free (debug_check_temp_file
[0]);
6783 debug_check_temp_file
[0] = NULL
;
6785 if (debug_check_temp_file
[1])
6786 free (debug_check_temp_file
[1]);
6787 debug_check_temp_file
[1] = NULL
;
6792 /* If this file's name does not contain a recognized suffix,
6793 record it as explicit linker input. */
6796 explicit_link_files
[i
] = 1;
6798 /* Clear the delete-on-failure queue, deleting the files in it
6799 if this compilation failed. */
6801 if (this_file_error
)
6803 delete_failure_queue ();
6806 /* If this compilation succeeded, don't delete those files later. */
6807 clear_failure_queue ();
6810 /* Reset the input file name to the first compile/object file name, for use
6811 with %b in LINK_SPEC. We use the first input file that we can find
6812 a compiler to compile it instead of using infiles.language since for
6813 languages other than C we use aliases that we then lookup later. */
6818 for (i
= 0; i
< n_infiles
; i
++)
6819 if (infiles
[i
].incompiler
6820 || (infiles
[i
].language
&& infiles
[i
].language
[0] != '*'))
6822 set_input (infiles
[i
].name
);
6829 /* Make sure INPUT_FILE_NUMBER points to first available open
6831 input_file_number
= n_infiles
;
6832 if (lang_specific_pre_link ())
6836 /* Determine if there are any linker input files. */
6837 num_linker_inputs
= 0;
6838 for (i
= 0; (int) i
< n_infiles
; i
++)
6839 if (explicit_link_files
[i
] || outfiles
[i
] != NULL
)
6840 num_linker_inputs
++;
6842 /* Run ld to link all the compiler output files. */
6844 if (num_linker_inputs
> 0 && !seen_error () && print_subprocess_help
< 2)
6846 int tmp
= execution_count
;
6847 #if HAVE_LTO_PLUGIN > 0
6848 #if HAVE_LTO_PLUGIN == 2
6849 const char *fno_use_linker_plugin
= "fno-use-linker-plugin";
6851 const char *fuse_linker_plugin
= "fuse-linker-plugin";
6855 /* We'll use ld if we can't find collect2. */
6856 if (! strcmp (linker_name_spec
, "collect2"))
6858 char *s
= find_a_file (&exec_prefixes
, "collect2", X_OK
, false);
6860 linker_name_spec
= "ld";
6863 #if HAVE_LTO_PLUGIN > 0
6864 #if HAVE_LTO_PLUGIN == 2
6865 if (!switch_matches (fno_use_linker_plugin
,
6866 fno_use_linker_plugin
+ strlen (fno_use_linker_plugin
), 0))
6868 if (switch_matches (fuse_linker_plugin
,
6869 fuse_linker_plugin
+ strlen (fuse_linker_plugin
), 0))
6872 linker_plugin_file_spec
= find_a_file (&exec_prefixes
,
6873 LTOPLUGINSONAME
, R_OK
,
6875 if (!linker_plugin_file_spec
)
6876 fatal_error ("-fuse-linker-plugin, but " LTOPLUGINSONAME
" not found");
6879 lto_gcc_spec
= argv
[0];
6881 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
6883 putenv_from_prefixes (&exec_prefixes
, "COMPILER_PATH", false);
6884 putenv_from_prefixes (&startfile_prefixes
, LIBRARY_PATH_ENV
, true);
6886 if (print_subprocess_help
== 1)
6888 printf (_("\nLinker options\n==============\n\n"));
6889 printf (_("Use \"-Wl,OPTION\" to pass \"OPTION\""
6890 " to the linker.\n\n"));
6893 value
= do_spec (link_command_spec
);
6896 linker_was_run
= (tmp
!= execution_count
);
6899 /* If options said don't run linker,
6900 complain about input files to be given to the linker. */
6902 if (! linker_was_run
&& !seen_error ())
6903 for (i
= 0; (int) i
< n_infiles
; i
++)
6904 if (explicit_link_files
[i
]
6905 && !(infiles
[i
].language
&& infiles
[i
].language
[0] == '*'))
6906 warning (0, "%s: linker input file unused because linking not done",
6909 /* Delete some or all of the temporary files we made. */
6912 delete_failure_queue ();
6913 delete_temp_files ();
6915 if (print_help_list
)
6917 printf (("\nFor bug reporting instructions, please see:\n"));
6918 printf ("%s\n", bug_report_url
);
6922 return (signal_count
!= 0 ? 2
6923 : seen_error () ? (pass_exit_codes
? greatest_status
: 1)
6927 /* Find the proper compilation spec for the file name NAME,
6928 whose length is LENGTH. LANGUAGE is the specified language,
6929 or 0 if this file is to be passed to the linker. */
6931 static struct compiler
*
6932 lookup_compiler (const char *name
, size_t length
, const char *language
)
6934 struct compiler
*cp
;
6936 /* If this was specified by the user to be a linker input, indicate that. */
6937 if (language
!= 0 && language
[0] == '*')
6940 /* Otherwise, look for the language, if one is spec'd. */
6943 for (cp
= compilers
+ n_compilers
- 1; cp
>= compilers
; cp
--)
6944 if (cp
->suffix
[0] == '@' && !strcmp (cp
->suffix
+ 1, language
))
6947 error ("language %s not recognized", language
);
6951 /* Look for a suffix. */
6952 for (cp
= compilers
+ n_compilers
- 1; cp
>= compilers
; cp
--)
6954 if (/* The suffix `-' matches only the file name `-'. */
6955 (!strcmp (cp
->suffix
, "-") && !strcmp (name
, "-"))
6956 || (strlen (cp
->suffix
) < length
6957 /* See if the suffix matches the end of NAME. */
6958 && !strcmp (cp
->suffix
,
6959 name
+ length
- strlen (cp
->suffix
))
6964 #if defined (OS2) ||defined (HAVE_DOS_BASED_FILE_SYSTEM)
6965 /* Look again, but case-insensitively this time. */
6967 for (cp
= compilers
+ n_compilers
- 1; cp
>= compilers
; cp
--)
6969 if (/* The suffix `-' matches only the file name `-'. */
6970 (!strcmp (cp
->suffix
, "-") && !strcmp (name
, "-"))
6971 || (strlen (cp
->suffix
) < length
6972 /* See if the suffix matches the end of NAME. */
6973 && ((!strcmp (cp
->suffix
,
6974 name
+ length
- strlen (cp
->suffix
))
6975 || !strpbrk (cp
->suffix
, "ABCDEFGHIJKLMNOPQRSTUVWXYZ"))
6976 && !strcasecmp (cp
->suffix
,
6977 name
+ length
- strlen (cp
->suffix
)))
6983 if (cp
>= compilers
)
6985 if (cp
->spec
[0] != '@')
6986 /* A non-alias entry: return it. */
6989 /* An alias entry maps a suffix to a language.
6990 Search for the language; pass 0 for NAME and LENGTH
6991 to avoid infinite recursion if language not found. */
6992 return lookup_compiler (NULL
, 0, cp
->spec
+ 1);
6998 save_string (const char *s
, int len
)
7000 char *result
= XNEWVEC (char, len
+ 1);
7002 memcpy (result
, s
, len
);
7008 pfatal_with_name (const char *name
)
7010 perror_with_name (name
);
7011 delete_temp_files ();
7016 perror_with_name (const char *name
)
7018 error ("%s: %m", name
);
7022 validate_switches_from_spec (const char *spec
)
7024 const char *p
= spec
;
7027 if (c
== '%' && (*p
== '{' || *p
== '<' || (*p
== 'W' && *++p
== '{')))
7028 /* We have a switch spec. */
7029 p
= validate_switches (p
+ 1);
7033 validate_all_switches (void)
7035 struct compiler
*comp
;
7036 struct spec_list
*spec
;
7038 for (comp
= compilers
; comp
->spec
; comp
++)
7039 validate_switches_from_spec (comp
->spec
);
7041 /* Look through the linked list of specs read from the specs file. */
7042 for (spec
= specs
; spec
; spec
= spec
->next
)
7043 validate_switches_from_spec (*spec
->ptr_spec
);
7045 validate_switches_from_spec (link_command_spec
);
7048 /* Look at the switch-name that comes after START
7049 and mark as valid all supplied switches that match it. */
7052 validate_switches (const char *start
)
7054 const char *p
= start
;
7058 bool suffix
= false;
7059 bool starred
= false;
7061 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
7070 if (*p
== '.' || *p
== ',')
7074 while (ISIDNUM (*p
) || *p
== '-' || *p
== '+' || *p
== '='
7075 || *p
== ',' || *p
== '.' || *p
== '@')
7080 starred
= true, p
++;
7086 /* Mark all matching switches as valid. */
7087 for (i
= 0; i
< n_switches
; i
++)
7088 if (!strncmp (switches
[i
].part1
, atom
, len
)
7089 && (starred
|| switches
[i
].part1
[len
] == 0))
7090 switches
[i
].validated
= 1;
7094 if (*p
&& (p
[-1] == '|' || p
[-1] == '&'))
7097 if (*p
&& p
[-1] == ':')
7099 while (*p
&& *p
!= ';' && *p
!= '}')
7104 if (*p
== '{' || *p
== '<')
7105 p
= validate_switches (p
+1);
7106 else if (p
[0] == 'W' && p
[1] == '{')
7107 p
= validate_switches (p
+2);
7114 if (*p
&& p
[-1] == ';')
7128 static struct mdswitchstr
*mdswitches
;
7129 static int n_mdswitches
;
7131 /* Check whether a particular argument was used. The first time we
7132 canonicalize the switches to keep only the ones we care about. */
7135 used_arg (const char *p
, int len
)
7140 const char *replace
;
7145 static struct mswitchstr
*mswitches
;
7146 static int n_mswitches
;
7151 struct mswitchstr
*matches
;
7155 /* Break multilib_matches into the component strings of string
7156 and replacement string. */
7157 for (q
= multilib_matches
; *q
!= '\0'; q
++)
7162 = (struct mswitchstr
*) alloca ((sizeof (struct mswitchstr
)) * cnt
);
7164 q
= multilib_matches
;
7173 fatal_error ("multilib spec %qs is invalid",
7178 matches
[i
].len
= q
- matches
[i
].str
;
7180 matches
[i
].replace
= ++q
;
7181 while (*q
!= ';' && *q
!= '\0')
7184 goto invalid_matches
;
7187 matches
[i
].rep_len
= q
- matches
[i
].replace
;
7193 /* Now build a list of the replacement string for switches that we care
7194 about. Make sure we allocate at least one entry. This prevents
7195 xmalloc from calling fatal, and prevents us from re-executing this
7198 = XNEWVEC (struct mswitchstr
, n_mdswitches
+ (n_switches
? n_switches
: 1));
7199 for (i
= 0; i
< n_switches
; i
++)
7200 if ((switches
[i
].live_cond
& SWITCH_IGNORE
) == 0)
7202 int xlen
= strlen (switches
[i
].part1
);
7203 for (j
= 0; j
< cnt
; j
++)
7204 if (xlen
== matches
[j
].len
7205 && ! strncmp (switches
[i
].part1
, matches
[j
].str
, xlen
))
7207 mswitches
[n_mswitches
].str
= matches
[j
].replace
;
7208 mswitches
[n_mswitches
].len
= matches
[j
].rep_len
;
7209 mswitches
[n_mswitches
].replace
= (char *) 0;
7210 mswitches
[n_mswitches
].rep_len
= 0;
7216 /* Add MULTILIB_DEFAULTS switches too, as long as they were not present
7217 on the command line nor any options mutually incompatible with
7219 for (i
= 0; i
< n_mdswitches
; i
++)
7223 for (q
= multilib_options
; *q
!= '\0'; q
++)
7229 while (strncmp (q
, mdswitches
[i
].str
, mdswitches
[i
].len
) != 0
7230 || strchr (" /", q
[mdswitches
[i
].len
]) == NULL
)
7232 while (*q
!= ' ' && *q
!= '/' && *q
!= '\0')
7239 if (*q
!= ' ' && *q
!= '\0')
7241 while (*r
!= ' ' && *r
!= '\0')
7244 while (*q
!= ' ' && *q
!= '/' && *q
!= '\0')
7247 if (used_arg (r
, q
- r
))
7252 mswitches
[n_mswitches
].str
= mdswitches
[i
].str
;
7253 mswitches
[n_mswitches
].len
= mdswitches
[i
].len
;
7254 mswitches
[n_mswitches
].replace
= (char *) 0;
7255 mswitches
[n_mswitches
].rep_len
= 0;
7268 for (i
= 0; i
< n_mswitches
; i
++)
7269 if (len
== mswitches
[i
].len
&& ! strncmp (p
, mswitches
[i
].str
, len
))
7276 default_arg (const char *p
, int len
)
7280 for (i
= 0; i
< n_mdswitches
; i
++)
7281 if (len
== mdswitches
[i
].len
&& ! strncmp (p
, mdswitches
[i
].str
, len
))
7287 /* Work out the subdirectory to use based on the options. The format of
7288 multilib_select is a list of elements. Each element is a subdirectory
7289 name followed by a list of options followed by a semicolon. The format
7290 of multilib_exclusions is the same, but without the preceding
7291 directory. First gcc will check the exclusions, if none of the options
7292 beginning with an exclamation point are present, and all of the other
7293 options are present, then we will ignore this completely. Passing
7294 that, gcc will consider each multilib_select in turn using the same
7295 rules for matching the options. If a match is found, that subdirectory
7299 set_multilib_dir (void)
7302 unsigned int this_path_len
;
7303 const char *this_path
, *this_arg
;
7304 const char *start
, *end
;
7306 int ok
, ndfltok
, first
;
7309 start
= multilib_defaults
;
7310 while (*start
== ' ' || *start
== '\t')
7312 while (*start
!= '\0')
7315 while (*start
!= ' ' && *start
!= '\t' && *start
!= '\0')
7317 while (*start
== ' ' || *start
== '\t')
7325 mdswitches
= XNEWVEC (struct mdswitchstr
, n_mdswitches
);
7326 for (start
= multilib_defaults
; *start
!= '\0'; start
= end
+ 1)
7328 while (*start
== ' ' || *start
== '\t')
7334 for (end
= start
+ 1;
7335 *end
!= ' ' && *end
!= '\t' && *end
!= '\0'; end
++)
7338 obstack_grow (&multilib_obstack
, start
, end
- start
);
7339 obstack_1grow (&multilib_obstack
, 0);
7340 mdswitches
[i
].str
= XOBFINISH (&multilib_obstack
, const char *);
7341 mdswitches
[i
++].len
= end
- start
;
7348 p
= multilib_exclusions
;
7351 /* Ignore newlines. */
7358 /* Check the arguments. */
7365 fatal_error ("multilib exclusions %qs is invalid",
7366 multilib_exclusions
);
7376 while (*p
!= ' ' && *p
!= ';')
7379 goto invalid_exclusions
;
7383 if (*this_arg
!= '!')
7391 ok
= used_arg (this_arg
, p
- this_arg
);
7406 p
= multilib_select
;
7409 /* Ignore newlines. */
7416 /* Get the initial path. */
7423 fatal_error ("multilib select %qs is invalid",
7428 this_path_len
= p
- this_path
;
7430 /* Check the arguments. */
7437 goto invalid_select
;
7446 while (*p
!= ' ' && *p
!= ';')
7449 goto invalid_select
;
7453 if (*this_arg
!= '!')
7461 /* If this is a default argument, we can just ignore it.
7462 This is true even if this_arg begins with '!'. Beginning
7463 with '!' does not mean that this argument is necessarily
7464 inappropriate for this library: it merely means that
7465 there is a more specific library which uses this
7466 argument. If this argument is a default, we need not
7467 consider that more specific library. */
7468 ok
= used_arg (this_arg
, p
- this_arg
);
7475 if (default_arg (this_arg
, p
- this_arg
))
7484 if (this_path_len
!= 1
7485 || this_path
[0] != '.')
7487 char *new_multilib_dir
= XNEWVEC (char, this_path_len
+ 1);
7490 strncpy (new_multilib_dir
, this_path
, this_path_len
);
7491 new_multilib_dir
[this_path_len
] = '\0';
7492 q
= strchr (new_multilib_dir
, ':');
7495 multilib_dir
= new_multilib_dir
;
7502 const char *q
= this_path
, *end
= this_path
+ this_path_len
;
7504 while (q
< end
&& *q
!= ':')
7508 char *new_multilib_os_dir
= XNEWVEC (char, end
- q
);
7509 memcpy (new_multilib_os_dir
, q
+ 1, end
- q
- 1);
7510 new_multilib_os_dir
[end
- q
- 1] = '\0';
7511 multilib_os_dir
= new_multilib_os_dir
;
7519 if (multilib_dir
== NULL
&& multilib_os_dir
!= NULL
7520 && strcmp (multilib_os_dir
, ".") == 0)
7522 free (CONST_CAST (char *, multilib_os_dir
));
7523 multilib_os_dir
= NULL
;
7525 else if (multilib_dir
!= NULL
&& multilib_os_dir
== NULL
)
7526 multilib_os_dir
= multilib_dir
;
7529 /* Print out the multiple library subdirectory selection
7530 information. This prints out a series of lines. Each line looks
7531 like SUBDIRECTORY;@OPTION@OPTION, with as many options as is
7532 required. Only the desired options are printed out, the negative
7533 matches. The options are print without a leading dash. There are
7534 no spaces to make it easy to use the information in the shell.
7535 Each subdirectory is printed only once. This assumes the ordering
7536 generated by the genmultilib script. Also, we leave out ones that match
7540 print_multilib_info (void)
7542 const char *p
= multilib_select
;
7543 const char *last_path
= 0, *this_path
;
7545 unsigned int last_path_len
= 0;
7550 /* Ignore newlines. */
7557 /* Get the initial path. */
7564 fatal_error ("multilib select %qs is invalid", multilib_select
);
7570 /* When --disable-multilib was used but target defines
7571 MULTILIB_OSDIRNAMES, entries starting with .: are there just
7572 to find multilib_os_dir, so skip them from output. */
7573 if (this_path
[0] == '.' && this_path
[1] == ':')
7576 /* Check for matches with the multilib_exclusions. We don't bother
7577 with the '!' in either list. If any of the exclusion rules match
7578 all of its options with the select rule, we skip it. */
7580 const char *e
= multilib_exclusions
;
7581 const char *this_arg
;
7586 /* Ignore newlines. */
7593 /* Check the arguments. */
7602 fatal_error ("multilib exclusion %qs is invalid",
7603 multilib_exclusions
);
7614 while (*e
!= ' ' && *e
!= ';')
7617 goto invalid_exclusion
;
7625 int len
= e
- this_arg
;
7628 goto invalid_select
;
7632 while (*q
!= ' ' && *q
!= ';')
7635 goto invalid_select
;
7639 if (! strncmp (arg
, this_arg
,
7640 (len
< q
- arg
) ? q
- arg
: len
)
7641 || default_arg (this_arg
, e
- this_arg
))
7671 /* If this is a duplicate, skip it. */
7672 skip
= (last_path
!= 0
7673 && (unsigned int) (p
- this_path
) == last_path_len
7674 && ! strncmp (last_path
, this_path
, last_path_len
));
7676 last_path
= this_path
;
7677 last_path_len
= p
- this_path
;
7680 /* If this directory requires any default arguments, we can skip
7681 it. We will already have printed a directory identical to
7682 this one which does not require that default argument. */
7693 goto invalid_select
;
7700 while (*q
!= ' ' && *q
!= ';')
7703 goto invalid_select
;
7708 && default_arg (arg
, q
- arg
))
7723 for (p1
= last_path
; p1
< p
&& *p1
!= ':'; p1
++)
7734 goto invalid_select
;
7742 use_arg
= *p
!= '!';
7747 while (*p
!= ' ' && *p
!= ';')
7750 goto invalid_select
;
7762 /* If there are extra options, print them now. */
7763 if (multilib_extra
&& *multilib_extra
)
7765 int print_at
= TRUE
;
7768 for (q
= multilib_extra
; *q
!= '\0'; q
++)
7789 /* getenv built-in spec function.
7791 Returns the value of the environment variable given by its first
7792 argument, concatenated with the second argument. If the
7793 environment variable is not defined, a fatal error is issued. */
7796 getenv_spec_function (int argc
, const char **argv
)
7806 value
= getenv (argv
[0]);
7808 fatal_error ("environment variable %qs not defined", argv
[0]);
7810 /* We have to escape every character of the environment variable so
7811 they are not interpreted as active spec characters. A
7812 particularly painful case is when we are reading a variable
7813 holding a windows path complete with \ separators. */
7814 len
= strlen (value
) * 2 + strlen (argv
[1]) + 1;
7815 result
= XNEWVAR (char, len
);
7816 for (ptr
= result
; *value
; ptr
+= 2)
7822 strcpy (ptr
, argv
[1]);
7827 /* if-exists built-in spec function.
7829 Checks to see if the file specified by the absolute pathname in
7830 ARGS exists. Returns that pathname if found.
7832 The usual use for this function is to check for a library file
7833 (whose name has been expanded with %s). */
7836 if_exists_spec_function (int argc
, const char **argv
)
7838 /* Must have only one argument. */
7839 if (argc
== 1 && IS_ABSOLUTE_PATH (argv
[0]) && ! access (argv
[0], R_OK
))
7845 /* if-exists-else built-in spec function.
7847 This is like if-exists, but takes an additional argument which
7848 is returned if the first argument does not exist. */
7851 if_exists_else_spec_function (int argc
, const char **argv
)
7853 /* Must have exactly two arguments. */
7857 if (IS_ABSOLUTE_PATH (argv
[0]) && ! access (argv
[0], R_OK
))
7863 /* replace-outfile built-in spec function.
7865 This looks for the first argument in the outfiles array's name and
7866 replaces it with the second argument. */
7869 replace_outfile_spec_function (int argc
, const char **argv
)
7872 /* Must have exactly two arguments. */
7876 for (i
= 0; i
< n_infiles
; i
++)
7878 if (outfiles
[i
] && !strcmp (outfiles
[i
], argv
[0]))
7879 outfiles
[i
] = xstrdup (argv
[1]);
7884 /* remove-outfile built-in spec function.
7886 * This looks for the first argument in the outfiles array's name and
7890 remove_outfile_spec_function (int argc
, const char **argv
)
7893 /* Must have exactly one argument. */
7897 for (i
= 0; i
< n_infiles
; i
++)
7899 if (outfiles
[i
] && !strcmp (outfiles
[i
], argv
[0]))
7905 /* Given two version numbers, compares the two numbers.
7906 A version number must match the regular expression
7907 ([1-9][0-9]*|0)(\.([1-9][0-9]*|0))*
7910 compare_version_strings (const char *v1
, const char *v2
)
7915 if (regcomp (&r
, "^([1-9][0-9]*|0)(\\.([1-9][0-9]*|0))*$",
7916 REG_EXTENDED
| REG_NOSUB
) != 0)
7918 rresult
= regexec (&r
, v1
, 0, NULL
, 0);
7919 if (rresult
== REG_NOMATCH
)
7920 fatal_error ("invalid version number %qs", v1
);
7921 else if (rresult
!= 0)
7923 rresult
= regexec (&r
, v2
, 0, NULL
, 0);
7924 if (rresult
== REG_NOMATCH
)
7925 fatal_error ("invalid version number %qs", v2
);
7926 else if (rresult
!= 0)
7929 return strverscmp (v1
, v2
);
7933 /* version_compare built-in spec function.
7935 This takes an argument of the following form:
7937 <comparison-op> <arg1> [<arg2>] <switch> <result>
7939 and produces "result" if the comparison evaluates to true,
7940 and nothing if it doesn't.
7942 The supported <comparison-op> values are:
7944 >= true if switch is a later (or same) version than arg1
7946 < true if switch is an earlier version than arg1
7948 >< true if switch is arg1 or later, and earlier than arg2
7949 <> true if switch is earlier than arg1 or is arg2 or later
7951 If the switch is not present, the condition is false unless
7952 the first character of the <comparison-op> is '!'.
7955 %:version-compare(>= 10.3 mmacosx-version-min= -lmx)
7956 adds -lmx if -mmacosx-version-min=10.3.9 was passed. */
7959 version_compare_spec_function (int argc
, const char **argv
)
7963 const char *switch_value
= NULL
;
7968 fatal_error ("too few arguments to %%:version-compare");
7969 if (argv
[0][0] == '\0')
7971 if ((argv
[0][1] == '<' || argv
[0][1] == '>') && argv
[0][0] != '!')
7973 if (argc
!= nargs
+ 3)
7974 fatal_error ("too many arguments to %%:version-compare");
7976 switch_len
= strlen (argv
[nargs
+ 1]);
7977 for (i
= 0; i
< n_switches
; i
++)
7978 if (!strncmp (switches
[i
].part1
, argv
[nargs
+ 1], switch_len
)
7979 && check_live_switch (i
, switch_len
))
7980 switch_value
= switches
[i
].part1
+ switch_len
;
7982 if (switch_value
== NULL
)
7986 comp1
= compare_version_strings (switch_value
, argv
[1]);
7988 comp2
= compare_version_strings (switch_value
, argv
[2]);
7990 comp2
= -1; /* This value unused. */
7993 switch (argv
[0][0] << 8 | argv
[0][1])
7995 case '>' << 8 | '=':
7996 result
= comp1
>= 0;
7998 case '!' << 8 | '<':
7999 result
= comp1
>= 0 || switch_value
== NULL
;
8004 case '!' << 8 | '>':
8005 result
= comp1
< 0 || switch_value
== NULL
;
8007 case '>' << 8 | '<':
8008 result
= comp1
>= 0 && comp2
< 0;
8010 case '<' << 8 | '>':
8011 result
= comp1
< 0 || comp2
>= 0;
8015 fatal_error ("unknown operator %qs in %%:version-compare", argv
[0]);
8020 return argv
[nargs
+ 2];
8023 /* %:include builtin spec function. This differs from %include in that it
8024 can be nested inside a spec, and thus be conditionalized. It takes
8025 one argument, the filename, and looks for it in the startfile path.
8026 The result is always NULL, i.e. an empty expansion. */
8029 include_spec_function (int argc
, const char **argv
)
8036 file
= find_a_file (&startfile_prefixes
, argv
[0], R_OK
, true);
8037 read_specs (file
? file
: argv
[0], FALSE
);
8042 /* %:find-file spec function. This function replaces its argument by
8043 the file found thru find_file, that is the -print-file-name gcc
8046 find_file_spec_function (int argc
, const char **argv
)
8053 file
= find_file (argv
[0]);
8058 /* %:find-plugindir spec function. This function replaces its argument
8059 by the -iplugindir=<dir> option. `dir' is found thru find_file, that
8060 is the -print-file-name gcc program option. */
8062 find_plugindir_spec_function (int argc
, const char **argv ATTRIBUTE_UNUSED
)
8069 option
= concat ("-iplugindir=", find_file ("plugin"), NULL
);
8074 /* %:print-asm-header spec function. Print a banner to say that the
8075 following output is from the assembler. */
8078 print_asm_header_spec_function (int arg ATTRIBUTE_UNUSED
,
8079 const char **argv ATTRIBUTE_UNUSED
)
8081 printf (_("Assembler options\n=================\n\n"));
8082 printf (_("Use \"-Wa,OPTION\" to pass \"OPTION\" to the assembler.\n\n"));
8087 /* Compute a timestamp to initialize flag_random_seed. */
8090 get_local_tick (void)
8094 /* Get some more or less random data. */
8095 #ifdef HAVE_GETTIMEOFDAY
8099 gettimeofday (&tv
, NULL
);
8100 ret
= tv
.tv_sec
* 1000 + tv
.tv_usec
/ 1000;
8104 time_t now
= time (NULL
);
8106 if (now
!= (time_t)-1)
8107 ret
= (unsigned) now
;
8114 /* %:compare-debug-dump-opt spec function. Save the last argument,
8115 expected to be the last -fdump-final-insns option, or generate a
8119 compare_debug_dump_opt_spec_function (int arg
,
8120 const char **argv ATTRIBUTE_UNUSED
)
8125 static char random_seed
[HOST_BITS_PER_WIDE_INT
/ 4 + 3];
8128 fatal_error ("too many arguments to %%:compare-debug-dump-opt");
8130 do_spec_2 ("%{fdump-final-insns=*:%*}");
8131 do_spec_1 (" ", 0, NULL
);
8133 if (VEC_length (const_char_p
, argbuf
) > 0
8134 && strcmp (argv
[VEC_length (const_char_p
, argbuf
) - 1], "."))
8139 name
= xstrdup (argv
[VEC_length (const_char_p
, argbuf
) - 1]);
8144 const char *ext
= NULL
;
8146 if (VEC_length (const_char_p
, argbuf
) > 0)
8148 do_spec_2 ("%{o*:%*}%{!o:%{!S:%b%O}%{S:%b.s}}");
8151 else if (!compare_debug
)
8154 do_spec_2 ("%g.gkd");
8156 do_spec_1 (" ", 0, NULL
);
8158 gcc_assert (VEC_length (const_char_p
, argbuf
) > 0);
8160 name
= concat (VEC_last (const_char_p
, argbuf
), ext
, NULL
);
8162 ret
= concat ("-fdump-final-insns=", name
, NULL
);
8165 which
= compare_debug
< 0;
8166 debug_check_temp_file
[which
] = name
;
8170 unsigned HOST_WIDE_INT value
= get_local_tick () ^ getpid ();
8172 sprintf (random_seed
, HOST_WIDE_INT_PRINT_HEX
, value
);
8176 ret
= concat ("%{!frandom-seed=*:-frandom-seed=", random_seed
, "} ",
8185 static const char *debug_auxbase_opt
;
8187 /* %:compare-debug-self-opt spec function. Expands to the options
8188 that are to be passed in the second compilation of
8192 compare_debug_self_opt_spec_function (int arg
,
8193 const char **argv ATTRIBUTE_UNUSED
)
8196 fatal_error ("too many arguments to %%:compare-debug-self-opt");
8198 if (compare_debug
>= 0)
8201 do_spec_2 ("%{c|S:%{o*:%*}}");
8202 do_spec_1 (" ", 0, NULL
);
8204 if (VEC_length (const_char_p
, argbuf
) > 0)
8205 debug_auxbase_opt
= concat ("-auxbase-strip ",
8206 VEC_last (const_char_p
, argbuf
),
8209 debug_auxbase_opt
= NULL
;
8212 %<o %<MD %<MMD %<MF* %<MG %<MP %<MQ* %<MT* \
8213 %<fdump-final-insns=* -w -S -o %j \
8214 %{!fcompare-debug-second:-fcompare-debug-second} \
8215 ", compare_debug_opt
, NULL
);
8218 /* %:compare-debug-auxbase-opt spec function. Expands to the auxbase
8219 options that are to be passed in the second compilation of
8220 compare-debug. It expects, as an argument, the basename of the
8221 current input file name, with the .gk suffix appended to it. */
8224 compare_debug_auxbase_opt_spec_function (int arg
,
8231 fatal_error ("too few arguments to %%:compare-debug-auxbase-opt");
8234 fatal_error ("too many arguments to %%:compare-debug-auxbase-opt");
8236 if (compare_debug
>= 0)
8239 len
= strlen (argv
[0]);
8240 if (len
< 3 || strcmp (argv
[0] + len
- 3, ".gk") != 0)
8241 fatal_error ("argument to %%:compare-debug-auxbase-opt "
8242 "does not end in .gk");
8244 if (debug_auxbase_opt
)
8245 return debug_auxbase_opt
;
8247 #define OPT "-auxbase "
8250 name
= (char*) xmalloc (sizeof (OPT
) + len
);
8251 memcpy (name
, OPT
, sizeof (OPT
) - 1);
8252 memcpy (name
+ sizeof (OPT
) - 1, argv
[0], len
);
8253 name
[sizeof (OPT
) - 1 + len
] = '\0';
8260 /* %:pass-through-libs spec function. Finds all -l options and input
8261 file names in the lib spec passed to it, and makes a list of them
8262 prepended with the plugin option to cause them to be passed through
8263 to the final link after all the new object files have been added. */
8266 pass_through_libs_spec_func (int argc
, const char **argv
)
8268 char *prepended
= xstrdup (" ");
8270 /* Shlemiel the painter's algorithm. Innately horrible, but at least
8271 we know that there will never be more than a handful of strings to
8272 concat, and it's only once per run, so it's not worth optimising. */
8273 for (n
= 0; n
< argc
; n
++)
8275 char *old
= prepended
;
8276 /* Anything that isn't an option is a full path to an output
8277 file; pass it through if it ends in '.a'. Among options,
8279 if (argv
[n
][0] == '-' && argv
[n
][1] == 'l')
8281 const char *lopt
= argv
[n
] + 2;
8282 /* Handle both joined and non-joined -l options. If for any
8283 reason there's a trailing -l with no joined or following
8284 arg just discard it. */
8285 if (!*lopt
&& ++n
>= argc
)
8289 prepended
= concat (prepended
, "-plugin-opt=-pass-through=-l",
8292 else if (!strcmp (".a", argv
[n
] + strlen (argv
[n
]) - 2))
8294 prepended
= concat (prepended
, "-plugin-opt=-pass-through=",
8295 argv
[n
], " ", NULL
);
8297 if (prepended
!= old
)