1 /* Compiler driver program that can handle many languages.
2 Copyright (C) 1987, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
3 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009,
5 Free Software Foundation, Inc.
7 This file is part of GCC.
9 GCC is free software; you can redistribute it and/or modify it under
10 the terms of the GNU General Public License as published by the Free
11 Software Foundation; either version 3, or (at your option) any later
14 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
15 WARRANTY; without even the implied warranty of MERCHANTABILITY or
16 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
19 You should have received a copy of the GNU General Public License
20 along with GCC; see the file COPYING3. If not see
21 <http://www.gnu.org/licenses/>. */
23 /* This program is the user interface to the C compiler and possibly to
24 other compilers. It is used because compilation is a complicated procedure
25 which involves running several programs and passing temporary files between
26 them, forwarding the users switches to those programs selectively,
27 and deleting the temporary files at the end.
29 CC recognizes how to compile each input file by suffixes in the file names.
30 Once it knows which kind of compilation to perform, the procedure for
31 compilation is specified by a string called a "spec". */
35 #include "coretypes.h"
36 #include "multilib.h" /* before tm.h */
43 #include "diagnostic.h"
48 #include "filenames.h"
50 /* By default there is no special suffix for target executables. */
51 /* FIXME: when autoconf is fixed, remove the host check - dj */
52 #if defined(TARGET_EXECUTABLE_SUFFIX) && defined(HOST_EXECUTABLE_SUFFIX)
53 #define HAVE_TARGET_EXECUTABLE_SUFFIX
56 /* By default there is no special suffix for host executables. */
57 #ifdef HOST_EXECUTABLE_SUFFIX
58 #define HAVE_HOST_EXECUTABLE_SUFFIX
60 #define HOST_EXECUTABLE_SUFFIX ""
63 /* By default, the suffix for target object files is ".o". */
64 #ifdef TARGET_OBJECT_SUFFIX
65 #define HAVE_TARGET_OBJECT_SUFFIX
67 #define TARGET_OBJECT_SUFFIX ".o"
70 static const char dir_separator_str
[] = { DIR_SEPARATOR
, 0 };
72 /* Most every one is fine with LIBRARY_PATH. For some, it conflicts. */
73 #ifndef LIBRARY_PATH_ENV
74 #define LIBRARY_PATH_ENV "LIBRARY_PATH"
77 /* If a stage of compilation returns an exit status >= 1,
78 compilation of that file ceases. */
80 #define MIN_FATAL_STATUS 1
82 /* Flag set by cppspec.c to 1. */
85 /* Flag set to nonzero if an @file argument has been supplied to gcc. */
86 static bool at_file_supplied
;
88 /* Definition of string containing the arguments given to configure. */
89 #include "configargs.h"
91 /* Flag saying to print the command line options understood by gcc and its
94 static int print_help_list
;
96 /* Flag saying to print the version of gcc and its sub-processes. */
98 static int print_version
;
100 /* Flag indicating whether we should ONLY print the command and
101 arguments (like verbose_flag) without executing the command.
102 Displayed arguments are quoted so that the generated command
103 line is suitable for execution. This is intended for use in
104 shell scripts to capture the driver-generated command line. */
105 static int verbose_only_flag
;
107 /* Flag indicating how to print command line options of sub-processes. */
109 static int print_subprocess_help
;
111 /* Whether we should report subprocess execution times to a file. */
113 FILE *report_times_to_file
= NULL
;
115 /* Nonzero means place this string before uses of /, so that include
116 and library files can be found in an alternate location. */
118 #ifdef TARGET_SYSTEM_ROOT
119 static const char *target_system_root
= TARGET_SYSTEM_ROOT
;
121 static const char *target_system_root
= 0;
124 /* Nonzero means pass the updated target_system_root to the compiler. */
126 static int target_system_root_changed
;
128 /* Nonzero means append this string to target_system_root. */
130 static const char *target_sysroot_suffix
= 0;
132 /* Nonzero means append this string to target_system_root for headers. */
134 static const char *target_sysroot_hdrs_suffix
= 0;
136 /* Nonzero means write "temp" files in source directory
137 and use the source file's name in them, and don't delete them. */
139 static enum save_temps
{
140 SAVE_TEMPS_NONE
, /* no -save-temps */
141 SAVE_TEMPS_CWD
, /* -save-temps in current directory */
142 SAVE_TEMPS_OBJ
/* -save-temps in object directory */
145 /* Output file to use to get the object directory for -save-temps=obj */
146 static char *save_temps_prefix
= 0;
147 static size_t save_temps_length
= 0;
149 /* The compiler version. */
151 static const char *compiler_version
;
153 /* The target version. */
155 static const char *const spec_version
= DEFAULT_TARGET_VERSION
;
157 /* The target machine. */
159 static const char *spec_machine
= DEFAULT_TARGET_MACHINE
;
161 /* Nonzero if cross-compiling.
162 When -b is used, the value comes from the `specs' file. */
164 #ifdef CROSS_DIRECTORY_STRUCTURE
165 static const char *cross_compile
= "1";
167 static const char *cross_compile
= "0";
170 /* Greatest exit code of sub-processes that has been encountered up to
172 static int greatest_status
= 1;
174 /* This is the obstack which we use to allocate many strings. */
176 static struct obstack obstack
;
178 /* This is the obstack to build an environment variable to pass to
179 collect2 that describes all of the relevant switches of what to
180 pass the compiler in building the list of pointers to constructors
183 static struct obstack collect_obstack
;
185 /* Forward declaration for prototypes. */
189 static void init_spec (void);
190 static void store_arg (const char *, int, int);
191 static void insert_wrapper (const char *);
192 static char *load_specs (const char *);
193 static void read_specs (const char *, bool, bool);
194 static void set_spec (const char *, const char *, bool);
195 static struct compiler
*lookup_compiler (const char *, size_t, const char *);
196 static char *build_search_list (const struct path_prefix
*, const char *,
198 static void xputenv (const char *);
199 static void putenv_from_prefixes (const struct path_prefix
*, const char *,
201 static int access_check (const char *, int);
202 static char *find_a_file (const struct path_prefix
*, const char *, int, bool);
203 static void add_prefix (struct path_prefix
*, const char *, const char *,
205 static void add_sysrooted_prefix (struct path_prefix
*, const char *,
206 const char *, int, int, int);
207 static char *skip_whitespace (char *);
208 static void delete_if_ordinary (const char *);
209 static void delete_temp_files (void);
210 static void delete_failure_queue (void);
211 static void clear_failure_queue (void);
212 static int check_live_switch (int, int);
213 static const char *handle_braces (const char *);
214 static inline bool input_suffix_matches (const char *, const char *);
215 static inline bool switch_matches (const char *, const char *, int);
216 static inline void mark_matching_switches (const char *, const char *, int);
217 static inline void process_marked_switches (void);
218 static const char *process_brace_body (const char *, const char *, const char *, int, int);
219 static const struct spec_function
*lookup_spec_function (const char *);
220 static const char *eval_spec_function (const char *, const char *);
221 static const char *handle_spec_function (const char *);
222 static char *save_string (const char *, int);
223 static void set_collect_gcc_options (void);
224 static int do_spec_1 (const char *, int, const char *);
225 static int do_spec_2 (const char *);
226 static void do_option_spec (const char *, const char *);
227 static void do_self_spec (const char *);
228 static const char *find_file (const char *);
229 static int is_directory (const char *, bool);
230 static const char *validate_switches (const char *, bool);
231 static void validate_all_switches (void);
232 static inline void validate_switches_from_spec (const char *, bool);
233 static void give_switch (int, int);
234 static int used_arg (const char *, int);
235 static int default_arg (const char *, int);
236 static void set_multilib_dir (void);
237 static void print_multilib_info (void);
238 static void perror_with_name (const char *);
239 static void display_help (void);
240 static void add_preprocessor_option (const char *, int);
241 static void add_assembler_option (const char *, int);
242 static void add_linker_option (const char *, int);
243 static void process_command (unsigned int, struct cl_decoded_option
*);
244 static int execute (void);
245 static void alloc_args (void);
246 static void clear_args (void);
247 static void fatal_signal (int);
248 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
249 static void init_gcc_specs (struct obstack
*, const char *, const char *,
252 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
253 static const char *convert_filename (const char *, int, int);
256 static const char *getenv_spec_function (int, const char **);
257 static const char *if_exists_spec_function (int, const char **);
258 static const char *if_exists_else_spec_function (int, const char **);
259 static const char *replace_outfile_spec_function (int, const char **);
260 static const char *remove_outfile_spec_function (int, const char **);
261 static const char *version_compare_spec_function (int, const char **);
262 static const char *include_spec_function (int, const char **);
263 static const char *find_file_spec_function (int, const char **);
264 static const char *find_plugindir_spec_function (int, const char **);
265 static const char *print_asm_header_spec_function (int, const char **);
266 static const char *compare_debug_dump_opt_spec_function (int, const char **);
267 static const char *compare_debug_self_opt_spec_function (int, const char **);
268 static const char *compare_debug_auxbase_opt_spec_function (int, const char **);
269 static const char *pass_through_libs_spec_func (int, const char **);
270 static const char *replace_extension_spec_func (int, const char **);
272 /* The Specs Language
274 Specs are strings containing lines, each of which (if not blank)
275 is made up of a program name, and arguments separated by spaces.
276 The program name must be exact and start from root, since no path
277 is searched and it is unreliable to depend on the current working directory.
278 Redirection of input or output is not supported; the subprograms must
279 accept filenames saying what files to read and write.
281 In addition, the specs can contain %-sequences to substitute variable text
282 or for conditional text. Here is a table of all defined %-sequences.
283 Note that spaces are not generated automatically around the results of
284 expanding these sequences; therefore, you can concatenate them together
285 or with constant text in a single argument.
287 %% substitute one % into the program name or argument.
288 %i substitute the name of the input file being processed.
289 %b substitute the basename of the input file being processed.
290 This is the substring up to (and not including) the last period
291 and not including the directory unless -save-temps was specified
292 to put temporaries in a different location.
293 %B same as %b, but include the file suffix (text after the last period).
295 substitute a file name that has suffix SUFFIX and is chosen
296 once per compilation, and mark the argument a la %d. To reduce
297 exposure to denial-of-service attacks, the file name is now
298 chosen in a way that is hard to predict even when previously
299 chosen file names are known. For example, `%g.s ... %g.o ... %g.s'
300 might turn into `ccUVUUAU.s ccXYAXZ12.o ccUVUUAU.s'. SUFFIX matches
301 the regexp "[.0-9A-Za-z]*%O"; "%O" is treated exactly as if it
302 had been pre-processed. Previously, %g was simply substituted
303 with a file name chosen once per compilation, without regard
304 to any appended suffix (which was therefore treated just like
305 ordinary text), making such attacks more likely to succeed.
307 like %g, but if -pipe is in effect, expands simply to "-".
309 like %g, but if -pipe is in effect, expands to nothing. (We have both
310 %| and %m to accommodate differences between system assemblers; see
311 the AS_NEEDS_DASH_FOR_PIPED_INPUT target macro.)
313 like %g, but generates a new temporary file name even if %uSUFFIX
316 substitutes the last file name generated with %uSUFFIX, generating a
317 new one if there is no such last file name. In the absence of any
318 %uSUFFIX, this is just like %gSUFFIX, except they don't share
319 the same suffix "space", so `%g.s ... %U.s ... %g.s ... %U.s'
320 would involve the generation of two distinct file names, one
321 for each `%g.s' and another for each `%U.s'. Previously, %U was
322 simply substituted with a file name chosen for the previous %u,
323 without regard to any appended suffix.
325 substitutes the name of the HOST_BIT_BUCKET, if any, and if it is
326 writable, and if save-temps is off; otherwise, substitute the name
327 of a temporary file, just like %u. This temporary file is not
328 meant for communication between processes, but rather as a junk
331 substitutes .SUFFIX for the suffixes of a matched switch's args when
332 it is subsequently output with %*. SUFFIX is terminated by the next
334 %d marks the argument containing or following the %d as a
335 temporary file name, so that that file will be deleted if GCC exits
336 successfully. Unlike %g, this contributes no text to the argument.
337 %w marks the argument containing or following the %w as the
338 "output file" of this compilation. This puts the argument
339 into the sequence of arguments that %o will substitute later.
340 %V indicates that this compilation produces no "output file".
342 like %{...} but mark last argument supplied within
343 as a file to be deleted on failure.
344 %o substitutes the names of all the output files, with spaces
345 automatically placed around them. You should write spaces
346 around the %o as well or the results are undefined.
347 %o is for use in the specs for running the linker.
348 Input files whose names have no recognized suffix are not compiled
349 at all, but they are included among the output files, so they will
351 %O substitutes the suffix for object files. Note that this is
352 handled specially when it immediately follows %g, %u, or %U
353 (with or without a suffix argument) because of the need for
354 those to form complete file names. The handling is such that
355 %O is treated exactly as if it had already been substituted,
356 except that %g, %u, and %U do not currently support additional
357 SUFFIX characters following %O as they would following, for
359 %I Substitute any of -iprefix (made from GCC_EXEC_PREFIX), -isysroot
360 (made from TARGET_SYSTEM_ROOT), -isystem (made from COMPILER_PATH
361 and -B options) and -imultilib as necessary.
362 %s current argument is the name of a library or startup file of some sort.
363 Search for that file in a standard list of directories
364 and substitute the full name found.
365 %eSTR Print STR as an error message. STR is terminated by a newline.
366 Use this when inconsistent options are detected.
367 %nSTR Print STR as a notice. STR is terminated by a newline.
368 %x{OPTION} Accumulate an option for %X.
369 %X Output the accumulated linker options specified by compilations.
370 %Y Output the accumulated assembler options specified by compilations.
371 %Z Output the accumulated preprocessor options specified by compilations.
372 %a process ASM_SPEC as a spec.
373 This allows config.h to specify part of the spec for running as.
374 %A process ASM_FINAL_SPEC as a spec. A capital A is actually
375 used here. This can be used to run a post-processor after the
376 assembler has done its job.
377 %D Dump out a -L option for each directory in startfile_prefixes.
378 If multilib_dir is set, extra entries are generated with it affixed.
379 %l process LINK_SPEC as a spec.
380 %L process LIB_SPEC as a spec.
381 %M Output multilib_os_dir.
382 %G process LIBGCC_SPEC as a spec.
383 %R Output the concatenation of target_system_root and
384 target_sysroot_suffix.
385 %S process STARTFILE_SPEC as a spec. A capital S is actually used here.
386 %E process ENDFILE_SPEC as a spec. A capital E is actually used here.
387 %C process CPP_SPEC as a spec.
388 %1 process CC1_SPEC as a spec.
389 %2 process CC1PLUS_SPEC as a spec.
390 %* substitute the variable part of a matched option. (See below.)
391 Note that each comma in the substituted string is replaced by
393 %<S remove all occurrences of -S from the command line.
394 Note - this command is position dependent. % commands in the
395 spec string before this one will see -S, % commands in the
396 spec string after this one will not.
397 %>S Similar to "%<S", but keep it in the GCC command line.
398 %<S* remove all occurrences of all switches beginning with -S from the
401 Call the named function FUNCTION, passing it ARGS. ARGS is
402 first processed as a nested spec string, then split into an
403 argument vector in the usual fashion. The function returns
404 a string which is processed as if it had appeared literally
405 as part of the current spec.
406 %{S} substitutes the -S switch, if that switch was given to GCC.
407 If that switch was not specified, this substitutes nothing.
408 Here S is a metasyntactic variable.
409 %{S*} substitutes all the switches specified to GCC whose names start
410 with -S. This is used for -o, -I, etc; switches that take
411 arguments. GCC considers `-o foo' as being one switch whose
412 name starts with `o'. %{o*} would substitute this text,
413 including the space; thus, two arguments would be generated.
414 %{S*&T*} likewise, but preserve order of S and T options (the order
415 of S and T in the spec is not significant). Can be any number
416 of ampersand-separated variables; for each the wild card is
417 optional. Useful for CPP as %{D*&U*&A*}.
419 %{S:X} substitutes X, if the -S switch was given to GCC.
420 %{!S:X} substitutes X, if the -S switch was NOT given to GCC.
421 %{S*:X} substitutes X if one or more switches whose names start
422 with -S was given to GCC. Normally X is substituted only
423 once, no matter how many such switches appeared. However,
424 if %* appears somewhere in X, then X will be substituted
425 once for each matching switch, with the %* replaced by the
426 part of that switch that matched the '*'.
427 %{.S:X} substitutes X, if processing a file with suffix S.
428 %{!.S:X} substitutes X, if NOT processing a file with suffix S.
429 %{,S:X} substitutes X, if processing a file which will use spec S.
430 %{!,S:X} substitutes X, if NOT processing a file which will use spec S.
432 %{S|T:X} substitutes X if either -S or -T was given to GCC. This may be
433 combined with '!', '.', ',', and '*' as above binding stronger
435 If %* appears in X, all of the alternatives must be starred, and
436 only the first matching alternative is substituted.
437 %{S:X; if S was given to GCC, substitutes X;
438 T:Y; else if T was given to GCC, substitutes Y;
439 :D} else substitutes D. There can be as many clauses as you need.
440 This may be combined with '.', '!', ',', '|', and '*' as above.
442 %(Spec) processes a specification defined in a specs file as *Spec:
444 The conditional text X in a %{S:X} or similar construct may contain
445 other nested % constructs or spaces, or even newlines. They are
446 processed as usual, as described above. Trailing white space in X is
447 ignored. White space may also appear anywhere on the left side of the
448 colon in these constructs, except between . or * and the corresponding
451 The -O, -f, -g, -m, and -W switches are handled specifically in these
452 constructs. If another value of -O or the negated form of a -f, -m, or
453 -W switch is found later in the command line, the earlier switch
454 value is ignored, except with {S*} where S is just one letter; this
455 passes all matching options.
457 The character | at the beginning of the predicate text is used to indicate
458 that a command should be piped to the following command, but only if -pipe
461 Note that it is built into GCC which switches take arguments and which
462 do not. You might think it would be useful to generalize this to
463 allow each compiler's spec to say which switches take arguments. But
464 this cannot be done in a consistent fashion. GCC cannot even decide
465 which input files have been specified without knowing which switches
466 take arguments, and it must know which input files to compile in order
467 to tell which compilers to run.
469 GCC also knows implicitly that arguments starting in `-l' are to be
470 treated as compiler output files, and passed to the linker in their
471 proper position among the other output files. */
473 /* Define the macros used for specs %a, %l, %L, %S, %C, %1. */
475 /* config.h can define ASM_SPEC to provide extra args to the assembler
476 or extra switch-translations. */
481 /* config.h can define ASM_FINAL_SPEC to run a post processor after
482 the assembler has run. */
483 #ifndef ASM_FINAL_SPEC
484 #define ASM_FINAL_SPEC \
486 objcopy --extract-dwo \
487 %{c:%{o*:%*}%{!o*:%b%O}}%{!c:%U%O} \
488 %{c:%{o*:%:replace-extension(%{o*:%*} .dwo)}%{!o*:%b.dwo}}%{!c:%b.dwo} \n\
489 objcopy --strip-dwo \
490 %{c:%{o*:%*}%{!o*:%b%O}}%{!c:%U%O} \
494 /* config.h can define CPP_SPEC to provide extra args to the C preprocessor
495 or extra switch-translations. */
500 /* config.h can define CC1_SPEC to provide extra args to cc1 and cc1plus
501 or extra switch-translations. */
506 /* config.h can define CC1PLUS_SPEC to provide extra args to cc1plus
507 or extra switch-translations. */
509 #define CC1PLUS_SPEC ""
512 /* config.h can define LINK_SPEC to provide extra args to the linker
513 or extra switch-translations. */
518 /* config.h can define LIB_SPEC to override the default libraries. */
520 #define LIB_SPEC "%{!shared:%{g*:-lg} %{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p}}"
525 /* XXX: valid only for GNU ld */
526 /* XXX: should exactly match hooks provided by libmudflap.a */
527 #define MFWRAP_SPEC " %{static: %{fmudflap|fmudflapth: \
528 --wrap=malloc --wrap=free --wrap=calloc --wrap=realloc\
529 --wrap=mmap --wrap=mmap64 --wrap=munmap --wrap=alloca\
530 } %{fmudflapth: --wrap=pthread_create\
531 }} %{fmudflap|fmudflapth: --wrap=main}"
534 #define MFLIB_SPEC "%{fmudflap|fmudflapth: -export-dynamic}"
537 /* When using -fsplit-stack we need to wrap pthread_create, in order
538 to initialize the stack guard. We always use wrapping, rather than
539 shared library ordering, and we keep the wrapper function in
540 libgcc. This is not yet a real spec, though it could become one;
541 it is currently just stuffed into LINK_SPEC. FIXME: This wrapping
542 only works with GNU ld and gold. FIXME: This is incompatible with
543 -fmudflap when linking statically, which wants to do its own
545 #define STACK_SPLIT_SPEC " %{fsplit-stack: --wrap=pthread_create}"
548 #ifdef STATIC_LIBASAN_LIBS
549 #define ADD_STATIC_LIBASAN_LIBS \
550 " %{static-libasan:" STATIC_LIBASAN_LIBS "}"
552 #define ADD_STATIC_LIBASAN_LIBS
554 #ifdef HAVE_LD_STATIC_DYNAMIC
555 #define LIBASAN_SPEC "%{static-libasan:" LD_STATIC_OPTION \
556 "} -lasan %{static-libasan:" LD_DYNAMIC_OPTION "}" \
557 ADD_STATIC_LIBASAN_LIBS
559 #define LIBASAN_SPEC "-lasan" ADD_STATIC_LIBASAN_LIBS
564 #ifdef HAVE_LD_STATIC_DYNAMIC
565 #define LIBTSAN_SPEC "%{static-libtsan:" LD_STATIC_OPTION \
566 "} -ltsan %{static-libtsan:" LD_DYNAMIC_OPTION "}"
568 #define LIBTSAN_SPEC "-ltsan"
572 /* config.h can define LIBGCC_SPEC to override how and when libgcc.a is
575 #if defined(REAL_LIBGCC_SPEC)
576 #define LIBGCC_SPEC REAL_LIBGCC_SPEC
577 #elif defined(LINK_LIBGCC_SPECIAL_1)
578 /* Have gcc do the search for libgcc.a. */
579 #define LIBGCC_SPEC "libgcc.a%s"
581 #define LIBGCC_SPEC "-lgcc"
585 /* config.h can define STARTFILE_SPEC to override the default crt0 files. */
586 #ifndef STARTFILE_SPEC
587 #define STARTFILE_SPEC \
588 "%{!shared:%{pg:gcrt0%O%s}%{!pg:%{p:mcrt0%O%s}%{!p:crt0%O%s}}}"
591 /* config.h can define ENDFILE_SPEC to override the default crtn files. */
593 #define ENDFILE_SPEC ""
597 #define LINKER_NAME "collect2"
600 #ifdef HAVE_AS_DEBUG_PREFIX_MAP
601 #define ASM_MAP " %{fdebug-prefix-map=*:--debug-prefix-map %*}"
606 /* Define ASM_DEBUG_SPEC to be a spec suitable for translating '-g'
608 #ifndef ASM_DEBUG_SPEC
609 # if defined(DBX_DEBUGGING_INFO) && defined(DWARF2_DEBUGGING_INFO) \
610 && defined(HAVE_AS_GDWARF2_DEBUG_FLAG) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
611 # define ASM_DEBUG_SPEC \
612 (PREFERRED_DEBUGGING_TYPE == DBX_DEBUG \
613 ? "%{!g0:%{gdwarf-2*:--gdwarf2}%{!gdwarf-2*:%{g*:--gstabs}}}" ASM_MAP \
614 : "%{!g0:%{gstabs*:--gstabs}%{!gstabs*:%{g*:--gdwarf2}}}" ASM_MAP)
616 # if defined(DBX_DEBUGGING_INFO) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
617 # define ASM_DEBUG_SPEC "%{g*:%{!g0:--gstabs}}" ASM_MAP
619 # if defined(DWARF2_DEBUGGING_INFO) && defined(HAVE_AS_GDWARF2_DEBUG_FLAG)
620 # define ASM_DEBUG_SPEC "%{g*:%{!g0:--gdwarf2}}" ASM_MAP
624 #ifndef ASM_DEBUG_SPEC
625 # define ASM_DEBUG_SPEC ""
628 /* Here is the spec for running the linker, after compiling all files. */
630 /* This is overridable by the target in case they need to specify the
631 -lgcc and -lc order specially, yet not require them to override all
632 of LINK_COMMAND_SPEC. */
633 #ifndef LINK_GCC_C_SEQUENCE_SPEC
634 #define LINK_GCC_C_SEQUENCE_SPEC "%G %L %G"
637 #ifndef LINK_SSP_SPEC
638 #ifdef TARGET_LIBC_PROVIDES_SSP
639 #define LINK_SSP_SPEC "%{fstack-protector:}"
641 #define LINK_SSP_SPEC "%{fstack-protector|fstack-protector-all:-lssp_nonshared -lssp}"
645 #ifndef LINK_PIE_SPEC
647 #define LINK_PIE_SPEC "%{pie:-pie} "
649 #define LINK_PIE_SPEC "%{pie:} "
653 #ifndef LINK_BUILDID_SPEC
654 # if defined(HAVE_LD_BUILDID) && defined(ENABLE_LD_BUILDID)
655 # define LINK_BUILDID_SPEC "%{!r:--build-id} "
659 /* Conditional to test whether the LTO plugin is used or not.
660 FIXME: For slim LTO we will need to enable plugin unconditionally. This
661 still cause problems with PLUGIN_LD != LD and when plugin is built but
662 not useable. For GCC 4.6 we don't support slim LTO and thus we can enable
663 plugin only when LTO is enabled. We still honor explicit
664 -fuse-linker-plugin if the linker used understands -plugin. */
666 /* The linker has some plugin support. */
667 #if HAVE_LTO_PLUGIN > 0
668 /* The linker used has full plugin support, use LTO plugin by default. */
669 #if HAVE_LTO_PLUGIN == 2
670 #define PLUGIN_COND "!fno-use-linker-plugin:%{flto|flto=*|fuse-linker-plugin"
671 #define PLUGIN_COND_CLOSE "}"
673 /* The linker used has limited plugin support, use LTO plugin with explicit
674 -fuse-linker-plugin. */
675 #define PLUGIN_COND "fuse-linker-plugin"
676 #define PLUGIN_COND_CLOSE ""
678 #define LINK_PLUGIN_SPEC \
680 -plugin %(linker_plugin_file) \
681 -plugin-opt=%(lto_wrapper) \
682 -plugin-opt=-fresolution=%u.res \
683 %{!nostdlib:%{!nodefaultlibs:%:pass-through-libs(%(link_gcc_c_sequence))}} \
686 /* The linker used doesn't support -plugin, reject -fuse-linker-plugin. */
687 #define LINK_PLUGIN_SPEC "%{fuse-linker-plugin:\
688 %e-fuse-linker-plugin is not supported in this configuration}"
692 /* -u* was put back because both BSD and SysV seem to support it. */
693 /* %{static:} simply prevents an error message if the target machine
694 doesn't handle -static. */
695 /* We want %{T*} after %{L*} and %D so that it can be used to specify linker
696 scripts which exist in user specified directories, or in standard
698 /* We pass any -flto flags on to the linker, which is expected
699 to understand them. In practice, this means it had better be collect2. */
700 /* %{e*} includes -export-dynamic; see comment in common.opt. */
701 #ifndef LINK_COMMAND_SPEC
702 #define LINK_COMMAND_SPEC "\
703 %{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:\
706 "%{flto|flto=*:%<fcompare-debug*} \
707 %{flto} %{flto=*} %l " LINK_PIE_SPEC \
708 "%X %{o*} %{e*} %{N} %{n} %{r}\
709 %{s} %{t} %{u*} %{z} %{Z} %{!nostdlib:%{!nostartfiles:%S}}\
710 %{static:} %{L*} %(mfwrap) %(link_libgcc) %o\
711 %{fopenmp|ftree-parallelize-loops=*:%:include(libgomp.spec)%(link_gomp)}\
712 %{fgnu-tm:%:include(libitm.spec)%(link_itm)}\
713 %(mflib) " STACK_SPLIT_SPEC "\
714 %{fprofile-arcs|fprofile-generate*|coverage:-lgcov}\
715 %{fsanitize=address:" LIBASAN_SPEC "%{static:%ecannot specify -static with -fsanitize=address}}\
716 %{fsanitize=thread:" LIBTSAN_SPEC "}\
717 %{!nostdlib:%{!nodefaultlibs:%(link_ssp) %(link_gcc_c_sequence)}}\
718 %{!nostdlib:%{!nostartfiles:%E}} %{T*} }}}}}}"
721 #ifndef LINK_LIBGCC_SPEC
722 /* Generate -L options for startfile prefix list. */
723 # define LINK_LIBGCC_SPEC "%D"
726 #ifndef STARTFILE_PREFIX_SPEC
727 # define STARTFILE_PREFIX_SPEC ""
731 # define SYSROOT_SPEC "--sysroot=%R"
734 #ifndef SYSROOT_SUFFIX_SPEC
735 # define SYSROOT_SUFFIX_SPEC ""
738 #ifndef SYSROOT_HEADERS_SUFFIX_SPEC
739 # define SYSROOT_HEADERS_SUFFIX_SPEC ""
742 static const char *asm_debug
= ASM_DEBUG_SPEC
;
743 static const char *cpp_spec
= CPP_SPEC
;
744 static const char *cc1_spec
= CC1_SPEC
;
745 static const char *cc1plus_spec
= CC1PLUS_SPEC
;
746 static const char *link_gcc_c_sequence_spec
= LINK_GCC_C_SEQUENCE_SPEC
;
747 static const char *link_ssp_spec
= LINK_SSP_SPEC
;
748 static const char *asm_spec
= ASM_SPEC
;
749 static const char *asm_final_spec
= ASM_FINAL_SPEC
;
750 static const char *link_spec
= LINK_SPEC
;
751 static const char *lib_spec
= LIB_SPEC
;
752 static const char *mfwrap_spec
= MFWRAP_SPEC
;
753 static const char *mflib_spec
= MFLIB_SPEC
;
754 static const char *link_gomp_spec
= "";
755 static const char *libgcc_spec
= LIBGCC_SPEC
;
756 static const char *endfile_spec
= ENDFILE_SPEC
;
757 static const char *startfile_spec
= STARTFILE_SPEC
;
758 static const char *linker_name_spec
= LINKER_NAME
;
759 static const char *linker_plugin_file_spec
= "";
760 static const char *lto_wrapper_spec
= "";
761 static const char *lto_gcc_spec
= "";
762 static const char *link_command_spec
= LINK_COMMAND_SPEC
;
763 static const char *link_libgcc_spec
= LINK_LIBGCC_SPEC
;
764 static const char *startfile_prefix_spec
= STARTFILE_PREFIX_SPEC
;
765 static const char *sysroot_spec
= SYSROOT_SPEC
;
766 static const char *sysroot_suffix_spec
= SYSROOT_SUFFIX_SPEC
;
767 static const char *sysroot_hdrs_suffix_spec
= SYSROOT_HEADERS_SUFFIX_SPEC
;
768 static const char *self_spec
= "";
770 /* Standard options to cpp, cc1, and as, to reduce duplication in specs.
771 There should be no need to override these in target dependent files,
772 but we need to copy them to the specs file so that newer versions
773 of the GCC driver can correctly drive older tool chains with the
774 appropriate -B options. */
776 /* When cpplib handles traditional preprocessing, get rid of this, and
777 call cc1 (or cc1obj in objc/lang-specs.h) from the main specs so
778 that we default the front end language better. */
779 static const char *trad_capable_cpp
=
780 "cc1 -E %{traditional|traditional-cpp:-traditional-cpp}";
782 /* We don't wrap .d files in %W{} since a missing .d file, and
783 therefore no dependency entry, confuses make into thinking a .o
784 file that happens to exist is up-to-date. */
785 static const char *cpp_unique_options
=
786 "%{!Q:-quiet} %{nostdinc*} %{C} %{CC} %{v} %{I*&F*} %{P} %I\
787 %{MD:-MD %{!o:%b.d}%{o*:%.d%*}}\
788 %{MMD:-MMD %{!o:%b.d}%{o*:%.d%*}}\
789 %{M} %{MM} %{MF*} %{MG} %{MP} %{MQ*} %{MT*}\
790 %{!E:%{!M:%{!MM:%{!MT:%{!MQ:%{MD|MMD:%{o*:-MQ %*}}}}}}}\
791 %{remap} %{g3|ggdb3|gstabs3|gcoff3|gxcoff3|gvms3:-dD}\
792 %{!iplugindir*:%{fplugin*:%:find-plugindir()}}\
793 %{H} %C %{D*&U*&A*} %{i*} %Z %i\
794 %{fmudflap:-D_MUDFLAP -include mf-runtime.h}\
795 %{fmudflapth:-D_MUDFLAP -D_MUDFLAPTH -include mf-runtime.h}\
798 /* This contains cpp options which are common with cc1_options and are passed
799 only when preprocessing only to avoid duplication. We pass the cc1 spec
800 options to the preprocessor so that it the cc1 spec may manipulate
801 options used to set target flags. Those special target flags settings may
802 in turn cause preprocessor symbols to be defined specially. */
803 static const char *cpp_options
=
804 "%(cpp_unique_options) %1 %{m*} %{std*&ansi&trigraphs} %{W*&pedantic*} %{w}\
805 %{f*} %{g*:%{!g0:%{g*} %{!fno-working-directory:-fworking-directory}}} %{O*}\
806 %{undef} %{save-temps*:-fpch-preprocess}";
808 /* This contains cpp options which are not passed when the preprocessor
809 output will be used by another program. */
810 static const char *cpp_debug_options
= "%{d*}";
812 /* NB: This is shared amongst all front-ends, except for Ada. */
813 static const char *cc1_options
=
814 "%{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\
815 %{!iplugindir*:%{fplugin*:%:find-plugindir()}}\
816 %1 %{!Q:-quiet} %{!dumpbase:-dumpbase %B} %{d*} %{m*} %{aux-info*}\
817 %{fcompare-debug-second:%:compare-debug-auxbase-opt(%b)} \
818 %{!fcompare-debug-second:%{c|S:%{o*:-auxbase-strip %*}%{!o*:-auxbase %b}}}%{!c:%{!S:-auxbase %b}} \
819 %{g*} %{O*} %{W*&pedantic*} %{w} %{std*&ansi&trigraphs}\
820 %{v:-version} %{pg:-p} %{p} %{f*} %{undef}\
821 %{Qn:-fno-ident} %{Qy:} %{-help:--help}\
822 %{-target-help:--target-help}\
823 %{-version:--version}\
824 %{-help=*:--help=%*}\
825 %{!fsyntax-only:%{S:%W{o*}%{!o*:-o %b.s}}}\
826 %{fsyntax-only:-o %j} %{-param*}\
827 %{fmudflap|fmudflapth:-fno-builtin -fno-merge-constants}\
828 %{coverage:-fprofile-arcs -ftest-coverage}";
830 static const char *asm_options
=
831 "%{-target-help:%:print-asm-header()} "
833 /* If GNU AS is used, then convert -w (no warnings), -I, and -v
834 to the assembler equivalents. */
835 "%{v} %{w:-W} %{I*} "
837 "%a %Y %{c:%W{o*}%{!o*:-o %w%b%O}}%{!c:-o %d%w%u%O}";
839 static const char *invoke_as
=
840 #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT
842 %{fcompare-debug=*|fdump-final-insns=*:%:compare-debug-dump-opt()}\
843 %{!S:-o %|.s |\n as %(asm_options) %|.s %A }\
847 %{fcompare-debug=*|fdump-final-insns=*:%:compare-debug-dump-opt()}\
848 %{!S:-o %|.s |\n as %(asm_options) %m.s %A }\
852 /* Some compilers have limits on line lengths, and the multilib_select
853 and/or multilib_matches strings can be very long, so we build them at
855 static struct obstack multilib_obstack
;
856 static const char *multilib_select
;
857 static const char *multilib_matches
;
858 static const char *multilib_defaults
;
859 static const char *multilib_exclusions
;
861 /* Check whether a particular argument is a default argument. */
863 #ifndef MULTILIB_DEFAULTS
864 #define MULTILIB_DEFAULTS { "" }
867 static const char *const multilib_defaults_raw
[] = MULTILIB_DEFAULTS
;
869 #ifndef DRIVER_SELF_SPECS
870 #define DRIVER_SELF_SPECS ""
873 /* Adding -fopenmp should imply pthreads. This is particularly important
874 for targets that use different start files and suchlike. */
875 #ifndef GOMP_SELF_SPECS
876 #define GOMP_SELF_SPECS "%{fopenmp|ftree-parallelize-loops=*: -pthread}"
879 /* Likewise for -fgnu-tm. */
880 #ifndef GTM_SELF_SPECS
881 #define GTM_SELF_SPECS "%{fgnu-tm: -pthread}"
884 static const char *const driver_self_specs
[] = {
885 "%{fdump-final-insns:-fdump-final-insns=.} %<fdump-final-insns",
886 DRIVER_SELF_SPECS
, CONFIGURE_SPECS
, GOMP_SELF_SPECS
, GTM_SELF_SPECS
889 #ifndef OPTION_DEFAULT_SPECS
890 #define OPTION_DEFAULT_SPECS { "", "" }
899 static const struct default_spec
900 option_default_specs
[] = { OPTION_DEFAULT_SPECS
};
904 struct user_specs
*next
;
905 const char *filename
;
908 static struct user_specs
*user_specs_head
, *user_specs_tail
;
911 /* Record the mapping from file suffixes for compilation specs. */
915 const char *suffix
; /* Use this compiler for input files
916 whose names end in this suffix. */
918 const char *spec
; /* To use this compiler, run this spec. */
920 const char *cpp_spec
; /* If non-NULL, substitute this spec
921 for `%C', rather than the usual
923 const int combinable
; /* If nonzero, compiler can deal with
924 multiple source files at once (IMA). */
925 const int needs_preprocessing
; /* If nonzero, source files need to
926 be run through a preprocessor. */
929 /* Pointer to a vector of `struct compiler' that gives the spec for
930 compiling a file, based on its suffix.
931 A file that does not end in any of these suffixes will be passed
932 unchanged to the loader and nothing else will be done to it.
934 An entry containing two 0s is used to terminate the vector.
936 If multiple entries match a file, the last matching one is used. */
938 static struct compiler
*compilers
;
940 /* Number of entries in `compilers', not counting the null terminator. */
942 static int n_compilers
;
944 /* The default list of file name suffixes and their compilation specs. */
946 static const struct compiler default_compilers
[] =
948 /* Add lists of suffixes of known languages here. If those languages
949 were not present when we built the driver, we will hit these copies
950 and be given a more meaningful error than "file not used since
951 linking is not done". */
952 {".m", "#Objective-C", 0, 0, 0}, {".mi", "#Objective-C", 0, 0, 0},
953 {".mm", "#Objective-C++", 0, 0, 0}, {".M", "#Objective-C++", 0, 0, 0},
954 {".mii", "#Objective-C++", 0, 0, 0},
955 {".cc", "#C++", 0, 0, 0}, {".cxx", "#C++", 0, 0, 0},
956 {".cpp", "#C++", 0, 0, 0}, {".cp", "#C++", 0, 0, 0},
957 {".c++", "#C++", 0, 0, 0}, {".C", "#C++", 0, 0, 0},
958 {".CPP", "#C++", 0, 0, 0}, {".ii", "#C++", 0, 0, 0},
959 {".ads", "#Ada", 0, 0, 0}, {".adb", "#Ada", 0, 0, 0},
960 {".f", "#Fortran", 0, 0, 0}, {".F", "#Fortran", 0, 0, 0},
961 {".for", "#Fortran", 0, 0, 0}, {".FOR", "#Fortran", 0, 0, 0},
962 {".ftn", "#Fortran", 0, 0, 0}, {".FTN", "#Fortran", 0, 0, 0},
963 {".fpp", "#Fortran", 0, 0, 0}, {".FPP", "#Fortran", 0, 0, 0},
964 {".f90", "#Fortran", 0, 0, 0}, {".F90", "#Fortran", 0, 0, 0},
965 {".f95", "#Fortran", 0, 0, 0}, {".F95", "#Fortran", 0, 0, 0},
966 {".f03", "#Fortran", 0, 0, 0}, {".F03", "#Fortran", 0, 0, 0},
967 {".f08", "#Fortran", 0, 0, 0}, {".F08", "#Fortran", 0, 0, 0},
968 {".r", "#Ratfor", 0, 0, 0},
969 {".p", "#Pascal", 0, 0, 0}, {".pas", "#Pascal", 0, 0, 0},
970 {".java", "#Java", 0, 0, 0}, {".class", "#Java", 0, 0, 0},
971 {".zip", "#Java", 0, 0, 0}, {".jar", "#Java", 0, 0, 0},
972 {".go", "#Go", 0, 1, 0},
973 /* Next come the entries for C. */
974 {".c", "@c", 0, 0, 1},
976 /* cc1 has an integrated ISO C preprocessor. We should invoke the
977 external preprocessor if -save-temps is given. */
978 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\
981 %eGNU C no longer supports -traditional without -E}\
982 %{save-temps*|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
983 %(cpp_options) -o %{save-temps*:%b.i} %{!save-temps*:%g.i} \n\
984 cc1 -fpreprocessed %{save-temps*:%b.i} %{!save-temps*:%g.i} \
986 %{!save-temps*:%{!traditional-cpp:%{!no-integrated-cpp:\
987 cc1 %(cpp_unique_options) %(cc1_options)}}}\
988 %{!fsyntax-only:%(invoke_as)}}}}", 0, 0, 1},
990 "%{!E:%e-E or -x required when input is from standard input}\
991 %(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)", 0, 0, 0},
992 {".h", "@c-header", 0, 0, 0},
994 /* cc1 has an integrated ISO C preprocessor. We should invoke the
995 external preprocessor if -save-temps is given. */
996 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\
998 %{save-temps*|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
999 %(cpp_options) -o %{save-temps*:%b.i} %{!save-temps*:%g.i} \n\
1000 cc1 -fpreprocessed %{save-temps*:%b.i} %{!save-temps*:%g.i} \
1002 %{!fdump-ada-spec*:-o %g.s %{!o*:--output-pch=%i.gch}\
1003 %W{o*:--output-pch=%*}}%V}\
1004 %{!save-temps*:%{!traditional-cpp:%{!no-integrated-cpp:\
1005 cc1 %(cpp_unique_options) %(cc1_options)\
1006 %{!fdump-ada-spec*:-o %g.s %{!o*:--output-pch=%i.gch}\
1007 %W{o*:--output-pch=%*}}%V}}}}}}", 0, 0, 0},
1008 {".i", "@cpp-output", 0, 0, 0},
1010 "%{!M:%{!MM:%{!E:cc1 -fpreprocessed %i %(cc1_options) %{!fsyntax-only:%(invoke_as)}}}}", 0, 0, 0},
1011 {".s", "@assembler", 0, 0, 0},
1013 "%{!M:%{!MM:%{!E:%{!S:as %(asm_debug) %(asm_options) %i %A }}}}", 0, 0, 0},
1014 {".sx", "@assembler-with-cpp", 0, 0, 0},
1015 {".S", "@assembler-with-cpp", 0, 0, 0},
1016 {"@assembler-with-cpp",
1017 #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT
1018 "%(trad_capable_cpp) -lang-asm %(cpp_options) -fno-directives-only\
1019 %{E|M|MM:%(cpp_debug_options)}\
1020 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\
1021 as %(asm_debug) %(asm_options) %|.s %A }}}}"
1023 "%(trad_capable_cpp) -lang-asm %(cpp_options) -fno-directives-only\
1024 %{E|M|MM:%(cpp_debug_options)}\
1025 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\
1026 as %(asm_debug) %(asm_options) %m.s %A }}}}"
1031 /* Mark end of table. */
1035 /* Number of elements in default_compilers, not counting the terminator. */
1037 static const int n_default_compilers
= ARRAY_SIZE (default_compilers
) - 1;
1039 typedef char *char_p
; /* For DEF_VEC_P. */
1041 /* A vector of options to give to the linker.
1042 These options are accumulated by %x,
1043 and substituted into the linker command with %X. */
1044 static vec
<char_p
> linker_options
;
1046 /* A vector of options to give to the assembler.
1047 These options are accumulated by -Wa,
1048 and substituted into the assembler command with %Y. */
1049 static vec
<char_p
> assembler_options
;
1051 /* A vector of options to give to the preprocessor.
1052 These options are accumulated by -Wp,
1053 and substituted into the preprocessor command with %Z. */
1054 static vec
<char_p
> preprocessor_options
;
1057 skip_whitespace (char *p
)
1061 /* A fully-blank line is a delimiter in the SPEC file and shouldn't
1062 be considered whitespace. */
1063 if (p
[0] == '\n' && p
[1] == '\n' && p
[2] == '\n')
1065 else if (*p
== '\n' || *p
== ' ' || *p
== '\t')
1079 /* Structures to keep track of prefixes to try when looking for files. */
1083 const char *prefix
; /* String to prepend to the path. */
1084 struct prefix_list
*next
; /* Next in linked list. */
1085 int require_machine_suffix
; /* Don't use without machine_suffix. */
1086 /* 2 means try both machine_suffix and just_machine_suffix. */
1087 int priority
; /* Sort key - priority within list. */
1088 int os_multilib
; /* 1 if OS multilib scheme should be used,
1089 0 for GCC multilib scheme. */
1094 struct prefix_list
*plist
; /* List of prefixes to try */
1095 int max_len
; /* Max length of a prefix in PLIST */
1096 const char *name
; /* Name of this list (used in config stuff) */
1099 /* List of prefixes to try when looking for executables. */
1101 static struct path_prefix exec_prefixes
= { 0, 0, "exec" };
1103 /* List of prefixes to try when looking for startup (crt0) files. */
1105 static struct path_prefix startfile_prefixes
= { 0, 0, "startfile" };
1107 /* List of prefixes to try when looking for include files. */
1109 static struct path_prefix include_prefixes
= { 0, 0, "include" };
1111 /* Suffix to attach to directories searched for commands.
1112 This looks like `MACHINE/VERSION/'. */
1114 static const char *machine_suffix
= 0;
1116 /* Suffix to attach to directories searched for commands.
1117 This is just `MACHINE/'. */
1119 static const char *just_machine_suffix
= 0;
1121 /* Adjusted value of GCC_EXEC_PREFIX envvar. */
1123 static const char *gcc_exec_prefix
;
1125 /* Adjusted value of standard_libexec_prefix. */
1127 static const char *gcc_libexec_prefix
;
1129 /* Default prefixes to attach to command names. */
1131 #ifndef STANDARD_STARTFILE_PREFIX_1
1132 #define STANDARD_STARTFILE_PREFIX_1 "/lib/"
1134 #ifndef STANDARD_STARTFILE_PREFIX_2
1135 #define STANDARD_STARTFILE_PREFIX_2 "/usr/lib/"
1138 #ifdef CROSS_DIRECTORY_STRUCTURE /* Don't use these prefixes for a cross compiler. */
1139 #undef MD_EXEC_PREFIX
1140 #undef MD_STARTFILE_PREFIX
1141 #undef MD_STARTFILE_PREFIX_1
1144 /* If no prefixes defined, use the null string, which will disable them. */
1145 #ifndef MD_EXEC_PREFIX
1146 #define MD_EXEC_PREFIX ""
1148 #ifndef MD_STARTFILE_PREFIX
1149 #define MD_STARTFILE_PREFIX ""
1151 #ifndef MD_STARTFILE_PREFIX_1
1152 #define MD_STARTFILE_PREFIX_1 ""
1155 /* These directories are locations set at configure-time based on the
1156 --prefix option provided to configure. Their initializers are
1157 defined in Makefile.in. These paths are not *directly* used when
1158 gcc_exec_prefix is set because, in that case, we know where the
1159 compiler has been installed, and use paths relative to that
1160 location instead. */
1161 static const char *const standard_exec_prefix
= STANDARD_EXEC_PREFIX
;
1162 static const char *const standard_libexec_prefix
= STANDARD_LIBEXEC_PREFIX
;
1163 static const char *const standard_bindir_prefix
= STANDARD_BINDIR_PREFIX
;
1164 static const char *const standard_startfile_prefix
= STANDARD_STARTFILE_PREFIX
;
1166 /* For native compilers, these are well-known paths containing
1167 components that may be provided by the system. For cross
1168 compilers, these paths are not used. */
1169 static const char *md_exec_prefix
= MD_EXEC_PREFIX
;
1170 static const char *md_startfile_prefix
= MD_STARTFILE_PREFIX
;
1171 static const char *md_startfile_prefix_1
= MD_STARTFILE_PREFIX_1
;
1172 static const char *const standard_startfile_prefix_1
1173 = STANDARD_STARTFILE_PREFIX_1
;
1174 static const char *const standard_startfile_prefix_2
1175 = STANDARD_STARTFILE_PREFIX_2
;
1177 /* A relative path to be used in finding the location of tools
1178 relative to the driver. */
1179 static const char *const tooldir_base_prefix
= TOOLDIR_BASE_PREFIX
;
1181 /* Subdirectory to use for locating libraries. Set by
1182 set_multilib_dir based on the compilation options. */
1184 static const char *multilib_dir
;
1186 /* Subdirectory to use for locating libraries in OS conventions. Set by
1187 set_multilib_dir based on the compilation options. */
1189 static const char *multilib_os_dir
;
1191 /* Subdirectory to use for locating libraries in multiarch conventions. Set by
1192 set_multilib_dir based on the compilation options. */
1194 static const char *multiarch_dir
;
1196 /* Structure to keep track of the specs that have been defined so far.
1197 These are accessed using %(specname) in a compiler or link
1202 /* The following 2 fields must be first */
1203 /* to allow EXTRA_SPECS to be initialized */
1204 const char *name
; /* name of the spec. */
1205 const char *ptr
; /* available ptr if no static pointer */
1207 /* The following fields are not initialized */
1208 /* by EXTRA_SPECS */
1209 const char **ptr_spec
; /* pointer to the spec itself. */
1210 struct spec_list
*next
; /* Next spec in linked list. */
1211 int name_len
; /* length of the name */
1212 bool user_p
; /* whether string come from file spec. */
1213 bool alloc_p
; /* whether string was allocated */
1216 #define INIT_STATIC_SPEC(NAME,PTR) \
1217 { NAME, NULL, PTR, (struct spec_list *) 0, sizeof (NAME) - 1, false, false }
1219 /* List of statically defined specs. */
1220 static struct spec_list static_specs
[] =
1222 INIT_STATIC_SPEC ("asm", &asm_spec
),
1223 INIT_STATIC_SPEC ("asm_debug", &asm_debug
),
1224 INIT_STATIC_SPEC ("asm_final", &asm_final_spec
),
1225 INIT_STATIC_SPEC ("asm_options", &asm_options
),
1226 INIT_STATIC_SPEC ("invoke_as", &invoke_as
),
1227 INIT_STATIC_SPEC ("cpp", &cpp_spec
),
1228 INIT_STATIC_SPEC ("cpp_options", &cpp_options
),
1229 INIT_STATIC_SPEC ("cpp_debug_options", &cpp_debug_options
),
1230 INIT_STATIC_SPEC ("cpp_unique_options", &cpp_unique_options
),
1231 INIT_STATIC_SPEC ("trad_capable_cpp", &trad_capable_cpp
),
1232 INIT_STATIC_SPEC ("cc1", &cc1_spec
),
1233 INIT_STATIC_SPEC ("cc1_options", &cc1_options
),
1234 INIT_STATIC_SPEC ("cc1plus", &cc1plus_spec
),
1235 INIT_STATIC_SPEC ("link_gcc_c_sequence", &link_gcc_c_sequence_spec
),
1236 INIT_STATIC_SPEC ("link_ssp", &link_ssp_spec
),
1237 INIT_STATIC_SPEC ("endfile", &endfile_spec
),
1238 INIT_STATIC_SPEC ("link", &link_spec
),
1239 INIT_STATIC_SPEC ("lib", &lib_spec
),
1240 INIT_STATIC_SPEC ("mfwrap", &mfwrap_spec
),
1241 INIT_STATIC_SPEC ("mflib", &mflib_spec
),
1242 INIT_STATIC_SPEC ("link_gomp", &link_gomp_spec
),
1243 INIT_STATIC_SPEC ("libgcc", &libgcc_spec
),
1244 INIT_STATIC_SPEC ("startfile", &startfile_spec
),
1245 INIT_STATIC_SPEC ("cross_compile", &cross_compile
),
1246 INIT_STATIC_SPEC ("version", &compiler_version
),
1247 INIT_STATIC_SPEC ("multilib", &multilib_select
),
1248 INIT_STATIC_SPEC ("multilib_defaults", &multilib_defaults
),
1249 INIT_STATIC_SPEC ("multilib_extra", &multilib_extra
),
1250 INIT_STATIC_SPEC ("multilib_matches", &multilib_matches
),
1251 INIT_STATIC_SPEC ("multilib_exclusions", &multilib_exclusions
),
1252 INIT_STATIC_SPEC ("multilib_options", &multilib_options
),
1253 INIT_STATIC_SPEC ("linker", &linker_name_spec
),
1254 INIT_STATIC_SPEC ("linker_plugin_file", &linker_plugin_file_spec
),
1255 INIT_STATIC_SPEC ("lto_wrapper", <o_wrapper_spec
),
1256 INIT_STATIC_SPEC ("lto_gcc", <o_gcc_spec
),
1257 INIT_STATIC_SPEC ("link_libgcc", &link_libgcc_spec
),
1258 INIT_STATIC_SPEC ("md_exec_prefix", &md_exec_prefix
),
1259 INIT_STATIC_SPEC ("md_startfile_prefix", &md_startfile_prefix
),
1260 INIT_STATIC_SPEC ("md_startfile_prefix_1", &md_startfile_prefix_1
),
1261 INIT_STATIC_SPEC ("startfile_prefix_spec", &startfile_prefix_spec
),
1262 INIT_STATIC_SPEC ("sysroot_spec", &sysroot_spec
),
1263 INIT_STATIC_SPEC ("sysroot_suffix_spec", &sysroot_suffix_spec
),
1264 INIT_STATIC_SPEC ("sysroot_hdrs_suffix_spec", &sysroot_hdrs_suffix_spec
),
1265 INIT_STATIC_SPEC ("self_spec", &self_spec
),
1268 #ifdef EXTRA_SPECS /* additional specs needed */
1269 /* Structure to keep track of just the first two args of a spec_list.
1270 That is all that the EXTRA_SPECS macro gives us. */
1273 const char *const name
;
1274 const char *const ptr
;
1277 static const struct spec_list_1 extra_specs_1
[] = { EXTRA_SPECS
};
1278 static struct spec_list
*extra_specs
= (struct spec_list
*) 0;
1281 /* List of dynamically allocates specs that have been defined so far. */
1283 static struct spec_list
*specs
= (struct spec_list
*) 0;
1285 /* List of static spec functions. */
1287 static const struct spec_function static_spec_functions
[] =
1289 { "getenv", getenv_spec_function
},
1290 { "if-exists", if_exists_spec_function
},
1291 { "if-exists-else", if_exists_else_spec_function
},
1292 { "replace-outfile", replace_outfile_spec_function
},
1293 { "remove-outfile", remove_outfile_spec_function
},
1294 { "version-compare", version_compare_spec_function
},
1295 { "include", include_spec_function
},
1296 { "find-file", find_file_spec_function
},
1297 { "find-plugindir", find_plugindir_spec_function
},
1298 { "print-asm-header", print_asm_header_spec_function
},
1299 { "compare-debug-dump-opt", compare_debug_dump_opt_spec_function
},
1300 { "compare-debug-self-opt", compare_debug_self_opt_spec_function
},
1301 { "compare-debug-auxbase-opt", compare_debug_auxbase_opt_spec_function
},
1302 { "pass-through-libs", pass_through_libs_spec_func
},
1303 { "replace-extension", replace_extension_spec_func
},
1304 #ifdef EXTRA_SPEC_FUNCTIONS
1305 EXTRA_SPEC_FUNCTIONS
1310 static int processing_spec_function
;
1312 /* Add appropriate libgcc specs to OBSTACK, taking into account
1313 various permutations of -shared-libgcc, -shared, and such. */
1315 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
1317 #ifndef USE_LD_AS_NEEDED
1318 #define USE_LD_AS_NEEDED 0
1322 init_gcc_specs (struct obstack
*obstack
, const char *shared_name
,
1323 const char *static_name
, const char *eh_name
)
1327 buf
= concat ("%{static|static-libgcc:", static_name
, " ", eh_name
, "}"
1328 "%{!static:%{!static-libgcc:"
1329 #if USE_LD_AS_NEEDED
1330 "%{!shared-libgcc:",
1331 static_name
, " --as-needed ", shared_name
, " --no-as-needed"
1334 shared_name
, "%{!shared: ", static_name
, "}"
1338 "%{!shared-libgcc:", static_name
, " ", eh_name
, "}"
1339 "%{shared-libgcc:", shared_name
, " ", static_name
, "}"
1343 "%{shared-libgcc:", shared_name
, "}"
1344 "%{!shared-libgcc:", static_name
, "}"
1347 "%{shared:", shared_name
, "}"
1352 obstack_grow (obstack
, buf
, strlen (buf
));
1355 #endif /* ENABLE_SHARED_LIBGCC */
1357 /* Initialize the specs lookup routines. */
1362 struct spec_list
*next
= (struct spec_list
*) 0;
1363 struct spec_list
*sl
= (struct spec_list
*) 0;
1367 return; /* Already initialized. */
1370 fnotice (stderr
, "Using built-in specs.\n");
1373 extra_specs
= XCNEWVEC (struct spec_list
, ARRAY_SIZE (extra_specs_1
));
1375 for (i
= ARRAY_SIZE (extra_specs_1
) - 1; i
>= 0; i
--)
1377 sl
= &extra_specs
[i
];
1378 sl
->name
= extra_specs_1
[i
].name
;
1379 sl
->ptr
= extra_specs_1
[i
].ptr
;
1381 sl
->name_len
= strlen (sl
->name
);
1382 sl
->ptr_spec
= &sl
->ptr
;
1387 for (i
= ARRAY_SIZE (static_specs
) - 1; i
>= 0; i
--)
1389 sl
= &static_specs
[i
];
1394 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
1395 /* ??? If neither -shared-libgcc nor --static-libgcc was
1396 seen, then we should be making an educated guess. Some proposed
1397 heuristics for ELF include:
1399 (1) If "-Wl,--export-dynamic", then it's a fair bet that the
1400 program will be doing dynamic loading, which will likely
1401 need the shared libgcc.
1403 (2) If "-ldl", then it's also a fair bet that we're doing
1406 (3) For each ET_DYN we're linking against (either through -lfoo
1407 or /some/path/foo.so), check to see whether it or one of
1408 its dependencies depends on a shared libgcc.
1412 If the runtime is fixed to look for program headers instead
1413 of calling __register_frame_info at all, for each object,
1414 use the shared libgcc if any EH symbol referenced.
1416 If crtstuff is fixed to not invoke __register_frame_info
1417 automatically, for each object, use the shared libgcc if
1418 any non-empty unwind section found.
1420 Doing any of this probably requires invoking an external program to
1421 do the actual object file scanning. */
1423 const char *p
= libgcc_spec
;
1426 /* Transform the extant libgcc_spec into one that uses the shared libgcc
1427 when given the proper command line arguments. */
1430 if (in_sep
&& *p
== '-' && strncmp (p
, "-lgcc", 5) == 0)
1432 init_gcc_specs (&obstack
,
1434 #ifdef USE_LIBUNWIND_EXCEPTIONS
1440 #ifdef USE_LIBUNWIND_EXCEPTIONS
1441 # ifdef HAVE_LD_STATIC_DYNAMIC
1442 " %{!static:" LD_STATIC_OPTION
"} -lunwind"
1443 " %{!static:" LD_DYNAMIC_OPTION
"}"
1453 else if (in_sep
&& *p
== 'l' && strncmp (p
, "libgcc.a%s", 10) == 0)
1455 /* Ug. We don't know shared library extensions. Hope that
1456 systems that use this form don't do shared libraries. */
1457 init_gcc_specs (&obstack
,
1461 #ifdef USE_LIBUNWIND_EXCEPTIONS
1470 obstack_1grow (&obstack
, *p
);
1471 in_sep
= (*p
== ' ');
1476 obstack_1grow (&obstack
, '\0');
1477 libgcc_spec
= XOBFINISH (&obstack
, const char *);
1480 #ifdef USE_AS_TRADITIONAL_FORMAT
1481 /* Prepend "--traditional-format" to whatever asm_spec we had before. */
1483 static const char tf
[] = "--traditional-format ";
1484 obstack_grow (&obstack
, tf
, sizeof(tf
) - 1);
1485 obstack_grow0 (&obstack
, asm_spec
, strlen (asm_spec
));
1486 asm_spec
= XOBFINISH (&obstack
, const char *);
1490 #if defined LINK_EH_SPEC || defined LINK_BUILDID_SPEC || \
1491 defined LINKER_HASH_STYLE
1492 # ifdef LINK_BUILDID_SPEC
1493 /* Prepend LINK_BUILDID_SPEC to whatever link_spec we had before. */
1494 obstack_grow (&obstack
, LINK_BUILDID_SPEC
, sizeof(LINK_BUILDID_SPEC
) - 1);
1496 # ifdef LINK_EH_SPEC
1497 /* Prepend LINK_EH_SPEC to whatever link_spec we had before. */
1498 obstack_grow (&obstack
, LINK_EH_SPEC
, sizeof(LINK_EH_SPEC
) - 1);
1500 # ifdef LINKER_HASH_STYLE
1501 /* Prepend --hash-style=LINKER_HASH_STYLE to whatever link_spec we had
1504 static const char hash_style
[] = "--hash-style=";
1505 obstack_grow (&obstack
, hash_style
, sizeof(hash_style
) - 1);
1506 obstack_grow (&obstack
, LINKER_HASH_STYLE
, sizeof(LINKER_HASH_STYLE
) - 1);
1507 obstack_1grow (&obstack
, ' ');
1510 obstack_grow0 (&obstack
, link_spec
, strlen (link_spec
));
1511 link_spec
= XOBFINISH (&obstack
, const char *);
1517 /* Change the value of spec NAME to SPEC. If SPEC is empty, then the spec is
1518 removed; If the spec starts with a + then SPEC is added to the end of the
1522 set_spec (const char *name
, const char *spec
, bool user_p
)
1524 struct spec_list
*sl
;
1525 const char *old_spec
;
1526 int name_len
= strlen (name
);
1529 /* If this is the first call, initialize the statically allocated specs. */
1532 struct spec_list
*next
= (struct spec_list
*) 0;
1533 for (i
= ARRAY_SIZE (static_specs
) - 1; i
>= 0; i
--)
1535 sl
= &static_specs
[i
];
1542 /* See if the spec already exists. */
1543 for (sl
= specs
; sl
; sl
= sl
->next
)
1544 if (name_len
== sl
->name_len
&& !strcmp (sl
->name
, name
))
1549 /* Not found - make it. */
1550 sl
= XNEW (struct spec_list
);
1551 sl
->name
= xstrdup (name
);
1552 sl
->name_len
= name_len
;
1553 sl
->ptr_spec
= &sl
->ptr
;
1555 *(sl
->ptr_spec
) = "";
1560 old_spec
= *(sl
->ptr_spec
);
1561 *(sl
->ptr_spec
) = ((spec
[0] == '+' && ISSPACE ((unsigned char)spec
[1]))
1562 ? concat (old_spec
, spec
+ 1, NULL
)
1567 fnotice (stderr
, "Setting spec %s to '%s'\n\n", name
, *(sl
->ptr_spec
));
1570 /* Free the old spec. */
1571 if (old_spec
&& sl
->alloc_p
)
1572 free (CONST_CAST(char *, old_spec
));
1574 sl
->user_p
= user_p
;
1578 /* Accumulate a command (program name and args), and run it. */
1580 typedef const char *const_char_p
; /* For DEF_VEC_P. */
1582 /* Vector of pointers to arguments in the current line of specifications. */
1584 static vec
<const_char_p
> argbuf
;
1586 /* Position in the argbuf vector containing the name of the output file
1587 (the value associated with the "-o" flag). */
1589 static int have_o_argbuf_index
= 0;
1591 /* Were the options -c, -S or -E passed. */
1592 static int have_c
= 0;
1594 /* Was the option -o passed. */
1595 static int have_o
= 0;
1597 /* This is the list of suffixes and codes (%g/%u/%U/%j) and the associated
1598 temp file. If the HOST_BIT_BUCKET is used for %j, no entry is made for
1601 static struct temp_name
{
1602 const char *suffix
; /* suffix associated with the code. */
1603 int length
; /* strlen (suffix). */
1604 int unique
; /* Indicates whether %g or %u/%U was used. */
1605 const char *filename
; /* associated filename. */
1606 int filename_length
; /* strlen (filename). */
1607 struct temp_name
*next
;
1610 /* Number of commands executed so far. */
1612 static int execution_count
;
1614 /* Number of commands that exited with a signal. */
1616 static int signal_count
;
1618 /* Allocate the argument vector. */
1626 /* Clear out the vector of arguments (after a command is executed). */
1631 argbuf
.truncate (0);
1634 /* Add one argument to the vector at the end.
1635 This is done when a space is seen or at the end of the line.
1636 If DELETE_ALWAYS is nonzero, the arg is a filename
1637 and the file should be deleted eventually.
1638 If DELETE_FAILURE is nonzero, the arg is a filename
1639 and the file should be deleted if this compilation fails. */
1642 store_arg (const char *arg
, int delete_always
, int delete_failure
)
1644 argbuf
.safe_push (arg
);
1646 if (strcmp (arg
, "-o") == 0)
1647 have_o_argbuf_index
= argbuf
.length ();
1648 if (delete_always
|| delete_failure
)
1651 /* If the temporary file we should delete is specified as
1652 part of a joined argument extract the filename. */
1654 && (p
= strrchr (arg
, '=')))
1656 record_temp_file (arg
, delete_always
, delete_failure
);
1660 /* Load specs from a file name named FILENAME, replacing occurrences of
1661 various different types of line-endings, \r\n, \n\r and just \r, with
1665 load_specs (const char *filename
)
1669 struct stat statbuf
;
1676 fnotice (stderr
, "Reading specs from %s\n", filename
);
1678 /* Open and stat the file. */
1679 desc
= open (filename
, O_RDONLY
, 0);
1681 pfatal_with_name (filename
);
1682 if (stat (filename
, &statbuf
) < 0)
1683 pfatal_with_name (filename
);
1685 /* Read contents of file into BUFFER. */
1686 buffer
= XNEWVEC (char, statbuf
.st_size
+ 1);
1687 readlen
= read (desc
, buffer
, (unsigned) statbuf
.st_size
);
1689 pfatal_with_name (filename
);
1690 buffer
[readlen
] = 0;
1693 specs
= XNEWVEC (char, readlen
+ 1);
1695 for (buffer_p
= buffer
; buffer_p
&& *buffer_p
; buffer_p
++)
1701 if (buffer_p
> buffer
&& *(buffer_p
- 1) == '\n') /* \n\r */
1703 else if (*(buffer_p
+ 1) == '\n') /* \r\n */
1717 /* Read compilation specs from a file named FILENAME,
1718 replacing the default ones.
1720 A suffix which starts with `*' is a definition for
1721 one of the machine-specific sub-specs. The "suffix" should be
1722 *asm, *cc1, *cpp, *link, *startfile, etc.
1723 The corresponding spec is stored in asm_spec, etc.,
1724 rather than in the `compilers' vector.
1726 Anything invalid in the file is a fatal error. */
1729 read_specs (const char *filename
, bool main_p
, bool user_p
)
1734 buffer
= load_specs (filename
);
1736 /* Scan BUFFER for specs, putting them in the vector. */
1742 char *in
, *out
, *p1
, *p2
, *p3
;
1744 /* Advance P in BUFFER to the next nonblank nocomment line. */
1745 p
= skip_whitespace (p
);
1749 /* Is this a special command that starts with '%'? */
1750 /* Don't allow this for the main specs file, since it would
1751 encourage people to overwrite it. */
1752 if (*p
== '%' && !main_p
)
1755 while (*p
&& *p
!= '\n')
1761 if (!strncmp (p1
, "%include", sizeof ("%include") - 1)
1762 && (p1
[sizeof "%include" - 1] == ' '
1763 || p1
[sizeof "%include" - 1] == '\t'))
1767 p1
+= sizeof ("%include");
1768 while (*p1
== ' ' || *p1
== '\t')
1771 if (*p1
++ != '<' || p
[-2] != '>')
1772 fatal_error ("specs %%include syntax malformed after "
1774 (long) (p1
- buffer
+ 1));
1777 new_filename
= find_a_file (&startfile_prefixes
, p1
, R_OK
, true);
1778 read_specs (new_filename
? new_filename
: p1
, false, user_p
);
1781 else if (!strncmp (p1
, "%include_noerr", sizeof "%include_noerr" - 1)
1782 && (p1
[sizeof "%include_noerr" - 1] == ' '
1783 || p1
[sizeof "%include_noerr" - 1] == '\t'))
1787 p1
+= sizeof "%include_noerr";
1788 while (*p1
== ' ' || *p1
== '\t')
1791 if (*p1
++ != '<' || p
[-2] != '>')
1792 fatal_error ("specs %%include syntax malformed after "
1794 (long) (p1
- buffer
+ 1));
1797 new_filename
= find_a_file (&startfile_prefixes
, p1
, R_OK
, true);
1799 read_specs (new_filename
, false, user_p
);
1800 else if (verbose_flag
)
1801 fnotice (stderr
, "could not find specs file %s\n", p1
);
1804 else if (!strncmp (p1
, "%rename", sizeof "%rename" - 1)
1805 && (p1
[sizeof "%rename" - 1] == ' '
1806 || p1
[sizeof "%rename" - 1] == '\t'))
1809 struct spec_list
*sl
;
1810 struct spec_list
*newsl
;
1812 /* Get original name. */
1813 p1
+= sizeof "%rename";
1814 while (*p1
== ' ' || *p1
== '\t')
1817 if (! ISALPHA ((unsigned char) *p1
))
1818 fatal_error ("specs %%rename syntax malformed after "
1820 (long) (p1
- buffer
));
1823 while (*p2
&& !ISSPACE ((unsigned char) *p2
))
1826 if (*p2
!= ' ' && *p2
!= '\t')
1827 fatal_error ("specs %%rename syntax malformed after "
1829 (long) (p2
- buffer
));
1833 while (*p2
== ' ' || *p2
== '\t')
1836 if (! ISALPHA ((unsigned char) *p2
))
1837 fatal_error ("specs %%rename syntax malformed after "
1839 (long) (p2
- buffer
));
1841 /* Get new spec name. */
1843 while (*p3
&& !ISSPACE ((unsigned char) *p3
))
1847 fatal_error ("specs %%rename syntax malformed after "
1849 (long) (p3
- buffer
));
1852 for (sl
= specs
; sl
; sl
= sl
->next
)
1853 if (name_len
== sl
->name_len
&& !strcmp (sl
->name
, p1
))
1857 fatal_error ("specs %s spec was not found to be renamed", p1
);
1859 if (strcmp (p1
, p2
) == 0)
1862 for (newsl
= specs
; newsl
; newsl
= newsl
->next
)
1863 if (strcmp (newsl
->name
, p2
) == 0)
1864 fatal_error ("%s: attempt to rename spec %qs to "
1865 "already defined spec %qs",
1870 fnotice (stderr
, "rename spec %s to %s\n", p1
, p2
);
1872 fnotice (stderr
, "spec is '%s'\n\n", *(sl
->ptr_spec
));
1876 set_spec (p2
, *(sl
->ptr_spec
), user_p
);
1878 free (CONST_CAST (char *, *(sl
->ptr_spec
)));
1880 *(sl
->ptr_spec
) = "";
1885 fatal_error ("specs unknown %% command after %ld characters",
1886 (long) (p1
- buffer
));
1889 /* Find the colon that should end the suffix. */
1891 while (*p1
&& *p1
!= ':' && *p1
!= '\n')
1894 /* The colon shouldn't be missing. */
1896 fatal_error ("specs file malformed after %ld characters",
1897 (long) (p1
- buffer
));
1899 /* Skip back over trailing whitespace. */
1901 while (p2
> buffer
&& (p2
[-1] == ' ' || p2
[-1] == '\t'))
1904 /* Copy the suffix to a string. */
1905 suffix
= save_string (p
, p2
- p
);
1906 /* Find the next line. */
1907 p
= skip_whitespace (p1
+ 1);
1909 fatal_error ("specs file malformed after %ld characters",
1910 (long) (p
- buffer
));
1913 /* Find next blank line or end of string. */
1914 while (*p1
&& !(*p1
== '\n' && (p1
[1] == '\n' || p1
[1] == '\0')))
1917 /* Specs end at the blank line and do not include the newline. */
1918 spec
= save_string (p
, p1
- p
);
1921 /* Delete backslash-newline sequences from the spec. */
1926 if (in
[0] == '\\' && in
[1] == '\n')
1928 else if (in
[0] == '#')
1929 while (*in
&& *in
!= '\n')
1937 if (suffix
[0] == '*')
1939 if (! strcmp (suffix
, "*link_command"))
1940 link_command_spec
= spec
;
1942 set_spec (suffix
+ 1, spec
, user_p
);
1946 /* Add this pair to the vector. */
1948 = XRESIZEVEC (struct compiler
, compilers
, n_compilers
+ 2);
1950 compilers
[n_compilers
].suffix
= suffix
;
1951 compilers
[n_compilers
].spec
= spec
;
1953 memset (&compilers
[n_compilers
], 0, sizeof compilers
[n_compilers
]);
1957 link_command_spec
= spec
;
1960 if (link_command_spec
== 0)
1961 fatal_error ("spec file has no spec for linking");
1964 /* Record the names of temporary files we tell compilers to write,
1965 and delete them at the end of the run. */
1967 /* This is the common prefix we use to make temp file names.
1968 It is chosen once for each run of this program.
1969 It is substituted into a spec by %g or %j.
1970 Thus, all temp file names contain this prefix.
1971 In practice, all temp file names start with this prefix.
1973 This prefix comes from the envvar TMPDIR if it is defined;
1974 otherwise, from the P_tmpdir macro if that is defined;
1975 otherwise, in /usr/tmp or /tmp;
1976 or finally the current directory if all else fails. */
1978 static const char *temp_filename
;
1980 /* Length of the prefix. */
1982 static int temp_filename_length
;
1984 /* Define the list of temporary files to delete. */
1989 struct temp_file
*next
;
1992 /* Queue of files to delete on success or failure of compilation. */
1993 static struct temp_file
*always_delete_queue
;
1994 /* Queue of files to delete on failure of compilation. */
1995 static struct temp_file
*failure_delete_queue
;
1997 /* Record FILENAME as a file to be deleted automatically.
1998 ALWAYS_DELETE nonzero means delete it if all compilation succeeds;
1999 otherwise delete it in any case.
2000 FAIL_DELETE nonzero means delete it if a compilation step fails;
2001 otherwise delete it in any case. */
2004 record_temp_file (const char *filename
, int always_delete
, int fail_delete
)
2006 char *const name
= xstrdup (filename
);
2010 struct temp_file
*temp
;
2011 for (temp
= always_delete_queue
; temp
; temp
= temp
->next
)
2012 if (! filename_cmp (name
, temp
->name
))
2015 temp
= XNEW (struct temp_file
);
2016 temp
->next
= always_delete_queue
;
2018 always_delete_queue
= temp
;
2025 struct temp_file
*temp
;
2026 for (temp
= failure_delete_queue
; temp
; temp
= temp
->next
)
2027 if (! filename_cmp (name
, temp
->name
))
2033 temp
= XNEW (struct temp_file
);
2034 temp
->next
= failure_delete_queue
;
2036 failure_delete_queue
= temp
;
2042 /* Delete all the temporary files whose names we previously recorded. */
2044 #ifndef DELETE_IF_ORDINARY
2045 #define DELETE_IF_ORDINARY(NAME,ST,VERBOSE_FLAG) \
2048 if (stat (NAME, &ST) >= 0 && S_ISREG (ST.st_mode)) \
2049 if (unlink (NAME) < 0) \
2051 perror_with_name (NAME); \
2056 delete_if_ordinary (const char *name
)
2062 printf ("Delete %s? (y or n) ", name
);
2066 while ((c
= getchar ()) != '\n' && c
!= EOF
)
2069 if (i
== 'y' || i
== 'Y')
2071 DELETE_IF_ORDINARY (name
, st
, verbose_flag
);
2075 delete_temp_files (void)
2077 struct temp_file
*temp
;
2079 for (temp
= always_delete_queue
; temp
; temp
= temp
->next
)
2080 delete_if_ordinary (temp
->name
);
2081 always_delete_queue
= 0;
2084 /* Delete all the files to be deleted on error. */
2087 delete_failure_queue (void)
2089 struct temp_file
*temp
;
2091 for (temp
= failure_delete_queue
; temp
; temp
= temp
->next
)
2092 delete_if_ordinary (temp
->name
);
2096 clear_failure_queue (void)
2098 failure_delete_queue
= 0;
2101 /* Call CALLBACK for each path in PATHS, breaking out early if CALLBACK
2103 If DO_MULTI is true iterate over the paths twice, first with multilib
2104 suffix then without, otherwise iterate over the paths once without
2105 adding a multilib suffix. When DO_MULTI is true, some attempt is made
2106 to avoid visiting the same path twice, but we could do better. For
2107 instance, /usr/lib/../lib is considered different from /usr/lib.
2108 At least EXTRA_SPACE chars past the end of the path passed to
2109 CALLBACK are available for use by the callback.
2110 CALLBACK_INFO allows extra parameters to be passed to CALLBACK.
2112 Returns the value returned by CALLBACK. */
2115 for_each_path (const struct path_prefix
*paths
,
2118 void *(*callback
) (char *, void *),
2119 void *callback_info
)
2121 struct prefix_list
*pl
;
2122 const char *multi_dir
= NULL
;
2123 const char *multi_os_dir
= NULL
;
2124 const char *multiarch_suffix
= NULL
;
2125 const char *multi_suffix
;
2126 const char *just_multi_suffix
;
2129 bool skip_multi_dir
= false;
2130 bool skip_multi_os_dir
= false;
2132 multi_suffix
= machine_suffix
;
2133 just_multi_suffix
= just_machine_suffix
;
2134 if (do_multi
&& multilib_dir
&& strcmp (multilib_dir
, ".") != 0)
2136 multi_dir
= concat (multilib_dir
, dir_separator_str
, NULL
);
2137 multi_suffix
= concat (multi_suffix
, multi_dir
, NULL
);
2138 just_multi_suffix
= concat (just_multi_suffix
, multi_dir
, NULL
);
2140 if (do_multi
&& multilib_os_dir
&& strcmp (multilib_os_dir
, ".") != 0)
2141 multi_os_dir
= concat (multilib_os_dir
, dir_separator_str
, NULL
);
2143 multiarch_suffix
= concat (multiarch_dir
, dir_separator_str
, NULL
);
2147 size_t multi_dir_len
= 0;
2148 size_t multi_os_dir_len
= 0;
2149 size_t multiarch_len
= 0;
2151 size_t just_suffix_len
;
2155 multi_dir_len
= strlen (multi_dir
);
2157 multi_os_dir_len
= strlen (multi_os_dir
);
2158 if (multiarch_suffix
)
2159 multiarch_len
= strlen (multiarch_suffix
);
2160 suffix_len
= strlen (multi_suffix
);
2161 just_suffix_len
= strlen (just_multi_suffix
);
2165 len
= paths
->max_len
+ extra_space
+ 1;
2166 len
+= MAX (MAX (suffix_len
, multi_os_dir_len
), multiarch_len
);
2167 path
= XNEWVEC (char, len
);
2170 for (pl
= paths
->plist
; pl
!= 0; pl
= pl
->next
)
2172 len
= strlen (pl
->prefix
);
2173 memcpy (path
, pl
->prefix
, len
);
2175 /* Look first in MACHINE/VERSION subdirectory. */
2176 if (!skip_multi_dir
)
2178 memcpy (path
+ len
, multi_suffix
, suffix_len
+ 1);
2179 ret
= callback (path
, callback_info
);
2184 /* Some paths are tried with just the machine (ie. target)
2185 subdir. This is used for finding as, ld, etc. */
2187 && pl
->require_machine_suffix
== 2)
2189 memcpy (path
+ len
, just_multi_suffix
, just_suffix_len
+ 1);
2190 ret
= callback (path
, callback_info
);
2195 /* Now try the multiarch path. */
2197 && !pl
->require_machine_suffix
&& multiarch_dir
)
2199 memcpy (path
+ len
, multiarch_suffix
, multiarch_len
+ 1);
2200 ret
= callback (path
, callback_info
);
2205 /* Now try the base path. */
2206 if (!pl
->require_machine_suffix
2207 && !(pl
->os_multilib
? skip_multi_os_dir
: skip_multi_dir
))
2209 const char *this_multi
;
2210 size_t this_multi_len
;
2212 if (pl
->os_multilib
)
2214 this_multi
= multi_os_dir
;
2215 this_multi_len
= multi_os_dir_len
;
2219 this_multi
= multi_dir
;
2220 this_multi_len
= multi_dir_len
;
2224 memcpy (path
+ len
, this_multi
, this_multi_len
+ 1);
2228 ret
= callback (path
, callback_info
);
2236 if (multi_dir
== NULL
&& multi_os_dir
== NULL
)
2239 /* Run through the paths again, this time without multilibs.
2240 Don't repeat any we have already seen. */
2243 free (CONST_CAST (char *, multi_dir
));
2245 free (CONST_CAST (char *, multi_suffix
));
2246 multi_suffix
= machine_suffix
;
2247 free (CONST_CAST (char *, just_multi_suffix
));
2248 just_multi_suffix
= just_machine_suffix
;
2251 skip_multi_dir
= true;
2254 free (CONST_CAST (char *, multi_os_dir
));
2255 multi_os_dir
= NULL
;
2258 skip_multi_os_dir
= true;
2263 free (CONST_CAST (char *, multi_dir
));
2264 free (CONST_CAST (char *, multi_suffix
));
2265 free (CONST_CAST (char *, just_multi_suffix
));
2268 free (CONST_CAST (char *, multi_os_dir
));
2274 /* Callback for build_search_list. Adds path to obstack being built. */
2276 struct add_to_obstack_info
{
2283 add_to_obstack (char *path
, void *data
)
2285 struct add_to_obstack_info
*info
= (struct add_to_obstack_info
*) data
;
2287 if (info
->check_dir
&& !is_directory (path
, false))
2290 if (!info
->first_time
)
2291 obstack_1grow (info
->ob
, PATH_SEPARATOR
);
2293 obstack_grow (info
->ob
, path
, strlen (path
));
2295 info
->first_time
= false;
2299 /* Add or change the value of an environment variable, outputting the
2300 change to standard error if in verbose mode. */
2302 xputenv (const char *string
)
2305 fnotice (stderr
, "%s\n", string
);
2306 putenv (CONST_CAST (char *, string
));
2309 /* Build a list of search directories from PATHS.
2310 PREFIX is a string to prepend to the list.
2311 If CHECK_DIR_P is true we ensure the directory exists.
2312 If DO_MULTI is true, multilib paths are output first, then
2314 This is used mostly by putenv_from_prefixes so we use `collect_obstack'.
2315 It is also used by the --print-search-dirs flag. */
2318 build_search_list (const struct path_prefix
*paths
, const char *prefix
,
2319 bool check_dir
, bool do_multi
)
2321 struct add_to_obstack_info info
;
2323 info
.ob
= &collect_obstack
;
2324 info
.check_dir
= check_dir
;
2325 info
.first_time
= true;
2327 obstack_grow (&collect_obstack
, prefix
, strlen (prefix
));
2328 obstack_1grow (&collect_obstack
, '=');
2330 for_each_path (paths
, do_multi
, 0, add_to_obstack
, &info
);
2332 obstack_1grow (&collect_obstack
, '\0');
2333 return XOBFINISH (&collect_obstack
, char *);
2336 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
2340 putenv_from_prefixes (const struct path_prefix
*paths
, const char *env_var
,
2343 xputenv (build_search_list (paths
, env_var
, true, do_multi
));
2346 /* Check whether NAME can be accessed in MODE. This is like access,
2347 except that it never considers directories to be executable. */
2350 access_check (const char *name
, int mode
)
2356 if (stat (name
, &st
) < 0
2357 || S_ISDIR (st
.st_mode
))
2361 return access (name
, mode
);
2364 /* Callback for find_a_file. Appends the file name to the directory
2365 path. If the resulting file exists in the right mode, return the
2366 full pathname to the file. */
2368 struct file_at_path_info
{
2377 file_at_path (char *path
, void *data
)
2379 struct file_at_path_info
*info
= (struct file_at_path_info
*) data
;
2380 size_t len
= strlen (path
);
2382 memcpy (path
+ len
, info
->name
, info
->name_len
);
2383 len
+= info
->name_len
;
2385 /* Some systems have a suffix for executable files.
2386 So try appending that first. */
2387 if (info
->suffix_len
)
2389 memcpy (path
+ len
, info
->suffix
, info
->suffix_len
+ 1);
2390 if (access_check (path
, info
->mode
) == 0)
2395 if (access_check (path
, info
->mode
) == 0)
2401 /* Search for NAME using the prefix list PREFIXES. MODE is passed to
2402 access to check permissions. If DO_MULTI is true, search multilib
2403 paths then non-multilib paths, otherwise do not search multilib paths.
2404 Return 0 if not found, otherwise return its name, allocated with malloc. */
2407 find_a_file (const struct path_prefix
*pprefix
, const char *name
, int mode
,
2410 struct file_at_path_info info
;
2412 #ifdef DEFAULT_ASSEMBLER
2413 if (! strcmp (name
, "as") && access (DEFAULT_ASSEMBLER
, mode
) == 0)
2414 return xstrdup (DEFAULT_ASSEMBLER
);
2417 #ifdef DEFAULT_LINKER
2418 if (! strcmp(name
, "ld") && access (DEFAULT_LINKER
, mode
) == 0)
2419 return xstrdup (DEFAULT_LINKER
);
2422 /* Determine the filename to execute (special case for absolute paths). */
2424 if (IS_ABSOLUTE_PATH (name
))
2426 if (access (name
, mode
) == 0)
2427 return xstrdup (name
);
2433 info
.suffix
= (mode
& X_OK
) != 0 ? HOST_EXECUTABLE_SUFFIX
: "";
2434 info
.name_len
= strlen (info
.name
);
2435 info
.suffix_len
= strlen (info
.suffix
);
2438 return (char*) for_each_path (pprefix
, do_multi
,
2439 info
.name_len
+ info
.suffix_len
,
2440 file_at_path
, &info
);
2443 /* Ranking of prefixes in the sort list. -B prefixes are put before
2446 enum path_prefix_priority
2448 PREFIX_PRIORITY_B_OPT
,
2449 PREFIX_PRIORITY_LAST
2452 /* Add an entry for PREFIX in PLIST. The PLIST is kept in ascending
2453 order according to PRIORITY. Within each PRIORITY, new entries are
2456 If WARN is nonzero, we will warn if no file is found
2457 through this prefix. WARN should point to an int
2458 which will be set to 1 if this entry is used.
2460 COMPONENT is the value to be passed to update_path.
2462 REQUIRE_MACHINE_SUFFIX is 1 if this prefix can't be used without
2463 the complete value of machine_suffix.
2464 2 means try both machine_suffix and just_machine_suffix. */
2467 add_prefix (struct path_prefix
*pprefix
, const char *prefix
,
2468 const char *component
, /* enum prefix_priority */ int priority
,
2469 int require_machine_suffix
, int os_multilib
)
2471 struct prefix_list
*pl
, **prev
;
2474 for (prev
= &pprefix
->plist
;
2475 (*prev
) != NULL
&& (*prev
)->priority
<= priority
;
2476 prev
= &(*prev
)->next
)
2479 /* Keep track of the longest prefix. */
2481 prefix
= update_path (prefix
, component
);
2482 len
= strlen (prefix
);
2483 if (len
> pprefix
->max_len
)
2484 pprefix
->max_len
= len
;
2486 pl
= XNEW (struct prefix_list
);
2487 pl
->prefix
= prefix
;
2488 pl
->require_machine_suffix
= require_machine_suffix
;
2489 pl
->priority
= priority
;
2490 pl
->os_multilib
= os_multilib
;
2492 /* Insert after PREV. */
2497 /* Same as add_prefix, but prepending target_system_root to prefix. */
2498 /* The target_system_root prefix has been relocated by gcc_exec_prefix. */
2500 add_sysrooted_prefix (struct path_prefix
*pprefix
, const char *prefix
,
2501 const char *component
,
2502 /* enum prefix_priority */ int priority
,
2503 int require_machine_suffix
, int os_multilib
)
2505 if (!IS_ABSOLUTE_PATH (prefix
))
2506 fatal_error ("system path %qs is not absolute", prefix
);
2508 if (target_system_root
)
2510 char *sysroot_no_trailing_dir_separator
= xstrdup (target_system_root
);
2511 size_t sysroot_len
= strlen (target_system_root
);
2514 && target_system_root
[sysroot_len
- 1] == DIR_SEPARATOR
)
2515 sysroot_no_trailing_dir_separator
[sysroot_len
- 1] = '\0';
2517 if (target_sysroot_suffix
)
2518 prefix
= concat (sysroot_no_trailing_dir_separator
,
2519 target_sysroot_suffix
, prefix
, NULL
);
2521 prefix
= concat (sysroot_no_trailing_dir_separator
, prefix
, NULL
);
2523 free (sysroot_no_trailing_dir_separator
);
2525 /* We have to override this because GCC's notion of sysroot
2526 moves along with GCC. */
2530 add_prefix (pprefix
, prefix
, component
, priority
,
2531 require_machine_suffix
, os_multilib
);
2534 /* Execute the command specified by the arguments on the current line of spec.
2535 When using pipes, this includes several piped-together commands
2536 with `|' between them.
2538 Return 0 if successful, -1 if failed. */
2544 int n_commands
; /* # of command. */
2546 struct pex_obj
*pex
;
2549 const char *prog
; /* program name. */
2550 const char **argv
; /* vector of args. */
2554 struct command
*commands
; /* each command buffer with above info. */
2556 gcc_assert (!processing_spec_function
);
2560 string
= find_a_file (&exec_prefixes
,
2561 argbuf
[0], X_OK
, false);
2564 insert_wrapper (wrapper_string
);
2567 /* Count # of piped commands. */
2568 for (n_commands
= 1, i
= 0; argbuf
.iterate (i
, &arg
); i
++)
2569 if (strcmp (arg
, "|") == 0)
2572 /* Get storage for each command. */
2573 commands
= (struct command
*) alloca (n_commands
* sizeof (struct command
));
2575 /* Split argbuf into its separate piped processes,
2576 and record info about each one.
2577 Also search for the programs that are to be run. */
2579 argbuf
.safe_push (0);
2581 commands
[0].prog
= argbuf
[0]; /* first command. */
2582 commands
[0].argv
= argbuf
.address ();
2584 if (!wrapper_string
)
2586 string
= find_a_file (&exec_prefixes
, commands
[0].prog
, X_OK
, false);
2587 commands
[0].argv
[0] = (string
) ? string
: commands
[0].argv
[0];
2590 for (n_commands
= 1, i
= 0; argbuf
.iterate (i
, &arg
); i
++)
2591 if (arg
&& strcmp (arg
, "|") == 0)
2592 { /* each command. */
2593 #if defined (__MSDOS__) || defined (OS2) || defined (VMS)
2594 fatal_error ("-pipe not supported");
2596 argbuf
[i
] = 0; /* Termination of
2598 commands
[n_commands
].prog
= argbuf
[i
+ 1];
2599 commands
[n_commands
].argv
2600 = &(argbuf
.address ())[i
+ 1];
2601 string
= find_a_file (&exec_prefixes
, commands
[n_commands
].prog
,
2604 commands
[n_commands
].argv
[0] = string
;
2608 /* If -v, print what we are about to do, and maybe query. */
2612 /* For help listings, put a blank line between sub-processes. */
2613 if (print_help_list
)
2614 fputc ('\n', stderr
);
2616 /* Print each piped command as a separate line. */
2617 for (i
= 0; i
< n_commands
; i
++)
2619 const char *const *j
;
2621 if (verbose_only_flag
)
2623 for (j
= commands
[i
].argv
; *j
; j
++)
2626 for (p
= *j
; *p
; ++p
)
2627 if (!ISALNUM ((unsigned char) *p
)
2628 && *p
!= '_' && *p
!= '/' && *p
!= '-' && *p
!= '.')
2632 fprintf (stderr
, " \"");
2633 for (p
= *j
; *p
; ++p
)
2635 if (*p
== '"' || *p
== '\\' || *p
== '$')
2636 fputc ('\\', stderr
);
2639 fputc ('"', stderr
);
2641 /* If it's empty, print "". */
2643 fprintf (stderr
, " \"\"");
2645 fprintf (stderr
, " %s", *j
);
2649 for (j
= commands
[i
].argv
; *j
; j
++)
2650 /* If it's empty, print "". */
2652 fprintf (stderr
, " \"\"");
2654 fprintf (stderr
, " %s", *j
);
2656 /* Print a pipe symbol after all but the last command. */
2657 if (i
+ 1 != n_commands
)
2658 fprintf (stderr
, " |");
2659 fprintf (stderr
, "\n");
2662 if (verbose_only_flag
!= 0)
2664 /* verbose_only_flag should act as if the spec was
2665 executed, so increment execution_count before
2666 returning. This prevents spurious warnings about
2667 unused linker input files, etc. */
2672 fnotice (stderr
, "\nGo ahead? (y or n) ");
2676 while (getchar () != '\n')
2679 if (i
!= 'y' && i
!= 'Y')
2684 #ifdef ENABLE_VALGRIND_CHECKING
2685 /* Run the each command through valgrind. To simplify prepending the
2686 path to valgrind and the option "-q" (for quiet operation unless
2687 something triggers), we allocate a separate argv array. */
2689 for (i
= 0; i
< n_commands
; i
++)
2695 for (argc
= 0; commands
[i
].argv
[argc
] != NULL
; argc
++)
2698 argv
= XALLOCAVEC (const char *, argc
+ 3);
2700 argv
[0] = VALGRIND_PATH
;
2702 for (j
= 2; j
< argc
+ 2; j
++)
2703 argv
[j
] = commands
[i
].argv
[j
- 2];
2706 commands
[i
].argv
= argv
;
2707 commands
[i
].prog
= argv
[0];
2711 /* Run each piped subprocess. */
2713 pex
= pex_init (PEX_USE_PIPES
| ((report_times
|| report_times_to_file
)
2714 ? PEX_RECORD_TIMES
: 0),
2715 progname
, temp_filename
);
2717 fatal_error ("pex_init failed: %m");
2719 for (i
= 0; i
< n_commands
; i
++)
2723 const char *string
= commands
[i
].argv
[0];
2725 errmsg
= pex_run (pex
,
2726 ((i
+ 1 == n_commands
? PEX_LAST
: 0)
2727 | (string
== commands
[i
].prog
? PEX_SEARCH
: 0)),
2728 string
, CONST_CAST (char **, commands
[i
].argv
),
2733 fatal_error (errmsg
);
2737 pfatal_with_name (errmsg
);
2741 if (string
!= commands
[i
].prog
)
2742 free (CONST_CAST (char *, string
));
2747 /* Wait for all the subprocesses to finish. */
2751 struct pex_time
*times
= NULL
;
2754 statuses
= (int *) alloca (n_commands
* sizeof (int));
2755 if (!pex_get_status (pex
, n_commands
, statuses
))
2756 fatal_error ("failed to get exit status: %m");
2758 if (report_times
|| report_times_to_file
)
2760 times
= (struct pex_time
*) alloca (n_commands
* sizeof (struct pex_time
));
2761 if (!pex_get_times (pex
, n_commands
, times
))
2762 fatal_error ("failed to get process times: %m");
2767 for (i
= 0; i
< n_commands
; ++i
)
2769 int status
= statuses
[i
];
2771 if (WIFSIGNALED (status
))
2774 /* SIGPIPE is a special case. It happens in -pipe mode
2775 when the compiler dies before the preprocessor is done,
2776 or the assembler dies before the compiler is done.
2777 There's generally been an error already, and this is
2778 just fallout. So don't generate another error unless
2779 we would otherwise have succeeded. */
2780 if (WTERMSIG (status
) == SIGPIPE
2781 && (signal_count
|| greatest_status
>= MIN_FATAL_STATUS
))
2788 internal_error ("%s (program %s)",
2789 strsignal (WTERMSIG (status
)), commands
[i
].prog
);
2791 else if (WIFEXITED (status
)
2792 && WEXITSTATUS (status
) >= MIN_FATAL_STATUS
)
2794 if (WEXITSTATUS (status
) > greatest_status
)
2795 greatest_status
= WEXITSTATUS (status
);
2799 if (report_times
|| report_times_to_file
)
2801 struct pex_time
*pt
= ×
[i
];
2804 ut
= ((double) pt
->user_seconds
2805 + (double) pt
->user_microseconds
/ 1.0e6
);
2806 st
= ((double) pt
->system_seconds
2807 + (double) pt
->system_microseconds
/ 1.0e6
);
2812 fnotice (stderr
, "# %s %.2f %.2f\n",
2813 commands
[i
].prog
, ut
, st
);
2815 if (report_times_to_file
)
2818 const char *const *j
;
2820 fprintf (report_times_to_file
, "%g %g", ut
, st
);
2822 for (j
= &commands
[i
].prog
; *j
; j
= &commands
[i
].argv
[++c
])
2825 for (p
= *j
; *p
; ++p
)
2826 if (*p
== '"' || *p
== '\\' || *p
== '$'
2832 fprintf (report_times_to_file
, " \"");
2833 for (p
= *j
; *p
; ++p
)
2835 if (*p
== '"' || *p
== '\\' || *p
== '$')
2836 fputc ('\\', report_times_to_file
);
2837 fputc (*p
, report_times_to_file
);
2839 fputc ('"', report_times_to_file
);
2842 fprintf (report_times_to_file
, " %s", *j
);
2845 fputc ('\n', report_times_to_file
);
2855 /* Find all the switches given to us
2856 and make a vector describing them.
2857 The elements of the vector are strings, one per switch given.
2858 If a switch uses following arguments, then the `part1' field
2859 is the switch itself and the `args' field
2860 is a null-terminated vector containing the following arguments.
2861 Bits in the `live_cond' field are:
2862 SWITCH_LIVE to indicate this switch is true in a conditional spec.
2863 SWITCH_FALSE to indicate this switch is overridden by a later switch.
2864 SWITCH_IGNORE to indicate this switch should be ignored (used in %<S).
2865 SWITCH_IGNORE_PERMANENTLY to indicate this switch should be ignored
2866 in all do_spec calls afterwards. Used for %<S from self specs.
2867 The `validated' field is nonzero if any spec has looked at this switch;
2868 if it remains zero at the end of the run, it must be meaningless. */
2870 #define SWITCH_LIVE (1 << 0)
2871 #define SWITCH_FALSE (1 << 1)
2872 #define SWITCH_IGNORE (1 << 2)
2873 #define SWITCH_IGNORE_PERMANENTLY (1 << 3)
2874 #define SWITCH_KEEP_FOR_GCC (1 << 4)
2880 unsigned int live_cond
;
2886 static struct switchstr
*switches
;
2888 static int n_switches
;
2890 static int n_switches_alloc
;
2892 /* Set to zero if -fcompare-debug is disabled, positive if it's
2893 enabled and we're running the first compilation, negative if it's
2894 enabled and we're running the second compilation. For most of the
2895 time, it's in the range -1..1, but it can be temporarily set to 2
2896 or 3 to indicate that the -fcompare-debug flags didn't come from
2897 the command-line, but rather from the GCC_COMPARE_DEBUG environment
2898 variable, until a synthesized -fcompare-debug flag is added to the
2902 /* Set to nonzero if we've seen the -fcompare-debug-second flag. */
2903 int compare_debug_second
;
2905 /* Set to the flags that should be passed to the second compilation in
2906 a -fcompare-debug compilation. */
2907 const char *compare_debug_opt
;
2909 static struct switchstr
*switches_debug_check
[2];
2911 static int n_switches_debug_check
[2];
2913 static int n_switches_alloc_debug_check
[2];
2915 static char *debug_check_temp_file
[2];
2917 /* Language is one of three things:
2919 1) The name of a real programming language.
2920 2) NULL, indicating that no one has figured out
2922 3) '*', indicating that the file should be passed
2927 const char *language
;
2928 struct compiler
*incompiler
;
2933 /* Also a vector of input files specified. */
2935 static struct infile
*infiles
;
2939 static int n_infiles_alloc
;
2941 /* True if multiple input files are being compiled to a single
2944 static bool combine_inputs
;
2946 /* This counts the number of libraries added by lang_specific_driver, so that
2947 we can tell if there were any user supplied any files or libraries. */
2949 static int added_libraries
;
2951 /* And a vector of corresponding output files is made up later. */
2953 const char **outfiles
;
2955 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2957 /* Convert NAME to a new name if it is the standard suffix. DO_EXE
2958 is true if we should look for an executable suffix. DO_OBJ
2959 is true if we should look for an object suffix. */
2962 convert_filename (const char *name
, int do_exe ATTRIBUTE_UNUSED
,
2963 int do_obj ATTRIBUTE_UNUSED
)
2965 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2973 len
= strlen (name
);
2975 #ifdef HAVE_TARGET_OBJECT_SUFFIX
2976 /* Convert x.o to x.obj if TARGET_OBJECT_SUFFIX is ".obj". */
2977 if (do_obj
&& len
> 2
2978 && name
[len
- 2] == '.'
2979 && name
[len
- 1] == 'o')
2981 obstack_grow (&obstack
, name
, len
- 2);
2982 obstack_grow0 (&obstack
, TARGET_OBJECT_SUFFIX
, strlen (TARGET_OBJECT_SUFFIX
));
2983 name
= XOBFINISH (&obstack
, const char *);
2987 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2988 /* If there is no filetype, make it the executable suffix (which includes
2989 the "."). But don't get confused if we have just "-o". */
2990 if (! do_exe
|| TARGET_EXECUTABLE_SUFFIX
[0] == 0 || (len
== 2 && name
[0] == '-'))
2993 for (i
= len
- 1; i
>= 0; i
--)
2994 if (IS_DIR_SEPARATOR (name
[i
]))
2997 for (i
++; i
< len
; i
++)
3001 obstack_grow (&obstack
, name
, len
);
3002 obstack_grow0 (&obstack
, TARGET_EXECUTABLE_SUFFIX
,
3003 strlen (TARGET_EXECUTABLE_SUFFIX
));
3004 name
= XOBFINISH (&obstack
, const char *);
3011 /* Display the command line switches accepted by gcc. */
3015 printf (_("Usage: %s [options] file...\n"), progname
);
3016 fputs (_("Options:\n"), stdout
);
3018 fputs (_(" -pass-exit-codes Exit with highest error code from a phase\n"), stdout
);
3019 fputs (_(" --help Display this information\n"), stdout
);
3020 fputs (_(" --target-help Display target specific command line options\n"), stdout
);
3021 fputs (_(" --help={common|optimizers|params|target|warnings|[^]{joined|separate|undocumented}}[,...]\n"), stdout
);
3022 fputs (_(" Display specific types of command line options\n"), stdout
);
3024 fputs (_(" (Use '-v --help' to display command line options of sub-processes)\n"), stdout
);
3025 fputs (_(" --version Display compiler version information\n"), stdout
);
3026 fputs (_(" -dumpspecs Display all of the built in spec strings\n"), stdout
);
3027 fputs (_(" -dumpversion Display the version of the compiler\n"), stdout
);
3028 fputs (_(" -dumpmachine Display the compiler's target processor\n"), stdout
);
3029 fputs (_(" -print-search-dirs Display the directories in the compiler's search path\n"), stdout
);
3030 fputs (_(" -print-libgcc-file-name Display the name of the compiler's companion library\n"), stdout
);
3031 fputs (_(" -print-file-name=<lib> Display the full path to library <lib>\n"), stdout
);
3032 fputs (_(" -print-prog-name=<prog> Display the full path to compiler component <prog>\n"), stdout
);
3034 -print-multiarch Display the target's normalized GNU triplet, used as\n\
3035 a component in the library path\n"), stdout
);
3036 fputs (_(" -print-multi-directory Display the root directory for versions of libgcc\n"), stdout
);
3038 -print-multi-lib Display the mapping between command line options and\n\
3039 multiple library search directories\n"), stdout
);
3040 fputs (_(" -print-multi-os-directory Display the relative path to OS libraries\n"), stdout
);
3041 fputs (_(" -print-sysroot Display the target libraries directory\n"), stdout
);
3042 fputs (_(" -print-sysroot-headers-suffix Display the sysroot suffix used to find headers\n"), stdout
);
3043 fputs (_(" -Wa,<options> Pass comma-separated <options> on to the assembler\n"), stdout
);
3044 fputs (_(" -Wp,<options> Pass comma-separated <options> on to the preprocessor\n"), stdout
);
3045 fputs (_(" -Wl,<options> Pass comma-separated <options> on to the linker\n"), stdout
);
3046 fputs (_(" -Xassembler <arg> Pass <arg> on to the assembler\n"), stdout
);
3047 fputs (_(" -Xpreprocessor <arg> Pass <arg> on to the preprocessor\n"), stdout
);
3048 fputs (_(" -Xlinker <arg> Pass <arg> on to the linker\n"), stdout
);
3049 fputs (_(" -save-temps Do not delete intermediate files\n"), stdout
);
3050 fputs (_(" -save-temps=<arg> Do not delete intermediate files\n"), stdout
);
3052 -no-canonical-prefixes Do not canonicalize paths when building relative\n\
3053 prefixes to other gcc components\n"), stdout
);
3054 fputs (_(" -pipe Use pipes rather than intermediate files\n"), stdout
);
3055 fputs (_(" -time Time the execution of each subprocess\n"), stdout
);
3056 fputs (_(" -specs=<file> Override built-in specs with the contents of <file>\n"), stdout
);
3057 fputs (_(" -std=<standard> Assume that the input sources are for <standard>\n"), stdout
);
3059 --sysroot=<directory> Use <directory> as the root directory for headers\n\
3060 and libraries\n"), stdout
);
3061 fputs (_(" -B <directory> Add <directory> to the compiler's search paths\n"), stdout
);
3062 fputs (_(" -v Display the programs invoked by the compiler\n"), stdout
);
3063 fputs (_(" -### Like -v but options quoted and commands not executed\n"), stdout
);
3064 fputs (_(" -E Preprocess only; do not compile, assemble or link\n"), stdout
);
3065 fputs (_(" -S Compile only; do not assemble or link\n"), stdout
);
3066 fputs (_(" -c Compile and assemble, but do not link\n"), stdout
);
3067 fputs (_(" -o <file> Place the output into <file>\n"), stdout
);
3068 fputs (_(" -pie Create a position independent executable\n"), stdout
);
3069 fputs (_(" -shared Create a shared library\n"), stdout
);
3071 -x <language> Specify the language of the following input files\n\
3072 Permissible languages include: c c++ assembler none\n\
3073 'none' means revert to the default behavior of\n\
3074 guessing the language based on the file's extension\n\
3078 \nOptions starting with -g, -f, -m, -O, -W, or --param are automatically\n\
3079 passed on to the various sub-processes invoked by %s. In order to pass\n\
3080 other options on to these processes the -W<letter> options must be used.\n\
3083 /* The rest of the options are displayed by invocations of the various
3088 add_preprocessor_option (const char *option
, int len
)
3090 preprocessor_options
.safe_push (save_string (option
, len
));
3094 add_assembler_option (const char *option
, int len
)
3096 assembler_options
.safe_push (save_string (option
, len
));
3100 add_linker_option (const char *option
, int len
)
3102 linker_options
.safe_push (save_string (option
, len
));
3105 /* Allocate space for an input file in infiles. */
3110 if (n_infiles_alloc
== 0)
3112 n_infiles_alloc
= 16;
3113 infiles
= XNEWVEC (struct infile
, n_infiles_alloc
);
3115 else if (n_infiles_alloc
== n_infiles
)
3117 n_infiles_alloc
*= 2;
3118 infiles
= XRESIZEVEC (struct infile
, infiles
, n_infiles_alloc
);
3122 /* Store an input file with the given NAME and LANGUAGE in
3126 add_infile (const char *name
, const char *language
)
3129 infiles
[n_infiles
].name
= name
;
3130 infiles
[n_infiles
++].language
= language
;
3133 /* Allocate space for a switch in switches. */
3138 if (n_switches_alloc
== 0)
3140 n_switches_alloc
= 16;
3141 switches
= XNEWVEC (struct switchstr
, n_switches_alloc
);
3143 else if (n_switches_alloc
== n_switches
)
3145 n_switches_alloc
*= 2;
3146 switches
= XRESIZEVEC (struct switchstr
, switches
, n_switches_alloc
);
3150 /* Save an option OPT with N_ARGS arguments in array ARGS, marking it
3151 as validated if VALIDATED and KNOWN if it is an internal switch. */
3154 save_switch (const char *opt
, size_t n_args
, const char *const *args
,
3155 bool validated
, bool known
)
3158 switches
[n_switches
].part1
= opt
+ 1;
3160 switches
[n_switches
].args
= 0;
3163 switches
[n_switches
].args
= XNEWVEC (const char *, n_args
+ 1);
3164 memcpy (switches
[n_switches
].args
, args
, n_args
* sizeof (const char *));
3165 switches
[n_switches
].args
[n_args
] = NULL
;
3168 switches
[n_switches
].live_cond
= 0;
3169 switches
[n_switches
].validated
= validated
;
3170 switches
[n_switches
].known
= known
;
3171 switches
[n_switches
].ordering
= 0;
3175 /* Handle an option DECODED that is unknown to the option-processing
3179 driver_unknown_option_callback (const struct cl_decoded_option
*decoded
)
3181 const char *opt
= decoded
->arg
;
3182 if (opt
[1] == 'W' && opt
[2] == 'n' && opt
[3] == 'o' && opt
[4] == '-'
3183 && !(decoded
->errors
& CL_ERR_NEGATIVE
))
3185 /* Leave unknown -Wno-* options for the compiler proper, to be
3186 diagnosed only if there are warnings. */
3187 save_switch (decoded
->canonical_option
[0],
3188 decoded
->canonical_option_num_elements
- 1,
3189 &decoded
->canonical_option
[1], false, true);
3192 if (decoded
->opt_index
== OPT_SPECIAL_unknown
)
3194 /* Give it a chance to define it a a spec file. */
3195 save_switch (decoded
->canonical_option
[0],
3196 decoded
->canonical_option_num_elements
- 1,
3197 &decoded
->canonical_option
[1], false, false);
3204 /* Handle an option DECODED that is not marked as CL_DRIVER.
3205 LANG_MASK will always be CL_DRIVER. */
3208 driver_wrong_lang_callback (const struct cl_decoded_option
*decoded
,
3209 unsigned int lang_mask ATTRIBUTE_UNUSED
)
3211 /* At this point, non-driver options are accepted (and expected to
3212 be passed down by specs) unless marked to be rejected by the
3213 driver. Options to be rejected by the driver but accepted by the
3214 compilers proper are treated just like completely unknown
3216 const struct cl_option
*option
= &cl_options
[decoded
->opt_index
];
3218 if (option
->cl_reject_driver
)
3219 error ("unrecognized command line option %qs",
3220 decoded
->orig_option_with_args_text
);
3222 save_switch (decoded
->canonical_option
[0],
3223 decoded
->canonical_option_num_elements
- 1,
3224 &decoded
->canonical_option
[1], false, true);
3227 static const char *spec_lang
= 0;
3228 static int last_language_n_infiles
;
3230 /* Handle a driver option; arguments and return value as for
3234 driver_handle_option (struct gcc_options
*opts
,
3235 struct gcc_options
*opts_set
,
3236 const struct cl_decoded_option
*decoded
,
3237 unsigned int lang_mask ATTRIBUTE_UNUSED
, int kind
,
3239 const struct cl_option_handlers
*handlers ATTRIBUTE_UNUSED
,
3240 diagnostic_context
*dc
)
3242 size_t opt_index
= decoded
->opt_index
;
3243 const char *arg
= decoded
->arg
;
3244 const char *compare_debug_replacement_opt
;
3245 int value
= decoded
->value
;
3246 bool validated
= false;
3247 bool do_save
= true;
3249 gcc_assert (opts
== &global_options
);
3250 gcc_assert (opts_set
== &global_options_set
);
3251 gcc_assert (kind
== DK_UNSPECIFIED
);
3252 gcc_assert (loc
== UNKNOWN_LOCATION
);
3253 gcc_assert (dc
== global_dc
);
3259 struct spec_list
*sl
;
3261 for (sl
= specs
; sl
; sl
= sl
->next
)
3262 printf ("*%s:\n%s\n\n", sl
->name
, *(sl
->ptr_spec
));
3263 if (link_command_spec
)
3264 printf ("*link_command:\n%s\n\n", link_command_spec
);
3268 case OPT_dumpversion
:
3269 printf ("%s\n", spec_version
);
3272 case OPT_dumpmachine
:
3273 printf ("%s\n", spec_machine
);
3279 /* CPP driver cannot obtain switch from cc1_options. */
3281 add_preprocessor_option ("--version", strlen ("--version"));
3282 add_assembler_option ("--version", strlen ("--version"));
3283 add_linker_option ("--version", strlen ("--version"));
3287 print_help_list
= 1;
3289 /* CPP driver cannot obtain switch from cc1_options. */
3291 add_preprocessor_option ("--help", 6);
3292 add_assembler_option ("--help", 6);
3293 add_linker_option ("--help", 6);
3297 print_subprocess_help
= 2;
3300 case OPT__target_help
:
3301 print_subprocess_help
= 1;
3303 /* CPP driver cannot obtain switch from cc1_options. */
3305 add_preprocessor_option ("--target-help", 13);
3306 add_assembler_option ("--target-help", 13);
3307 add_linker_option ("--target-help", 13);
3310 case OPT__no_sysroot_suffix
:
3311 case OPT_pass_exit_codes
:
3312 case OPT_print_search_dirs
:
3313 case OPT_print_file_name_
:
3314 case OPT_print_prog_name_
:
3315 case OPT_print_multi_lib
:
3316 case OPT_print_multi_directory
:
3317 case OPT_print_sysroot
:
3318 case OPT_print_multi_os_directory
:
3319 case OPT_print_multiarch
:
3320 case OPT_print_sysroot_headers_suffix
:
3323 /* These options set the variables specified in common.opt
3324 automatically, and do not need to be saved for spec
3329 case OPT_print_libgcc_file_name
:
3330 print_file_name
= "libgcc.a";
3334 case OPT_fcompare_debug_second
:
3335 compare_debug_second
= 1;
3338 case OPT_fcompare_debug
:
3342 compare_debug_replacement_opt
= "-fcompare-debug=";
3344 goto compare_debug_with_arg
;
3347 compare_debug_replacement_opt
= "-fcompare-debug=-gtoggle";
3349 goto compare_debug_with_arg
;
3356 case OPT_fcompare_debug_
:
3357 compare_debug_replacement_opt
= decoded
->canonical_option
[0];
3358 compare_debug_with_arg
:
3359 gcc_assert (decoded
->canonical_option_num_elements
== 1);
3360 gcc_assert (arg
!= NULL
);
3365 if (compare_debug
< 0)
3366 compare_debug_opt
= NULL
;
3368 compare_debug_opt
= arg
;
3369 save_switch (compare_debug_replacement_opt
, 0, NULL
, validated
, true);
3375 /* Pass the rest of this option to the assembler. */
3377 /* Split the argument at commas. */
3379 for (j
= 0; arg
[j
]; j
++)
3382 add_assembler_option (arg
+ prev
, j
- prev
);
3386 /* Record the part after the last comma. */
3387 add_assembler_option (arg
+ prev
, j
- prev
);
3395 /* Pass the rest of this option to the preprocessor. */
3397 /* Split the argument at commas. */
3399 for (j
= 0; arg
[j
]; j
++)
3402 add_preprocessor_option (arg
+ prev
, j
- prev
);
3406 /* Record the part after the last comma. */
3407 add_preprocessor_option (arg
+ prev
, j
- prev
);
3415 /* Split the argument at commas. */
3417 for (j
= 0; arg
[j
]; j
++)
3420 add_infile (save_string (arg
+ prev
, j
- prev
), "*");
3423 /* Record the part after the last comma. */
3424 add_infile (arg
+ prev
, "*");
3430 add_infile (arg
, "*");
3434 case OPT_Xpreprocessor
:
3435 add_preprocessor_option (arg
, strlen (arg
));
3439 case OPT_Xassembler
:
3440 add_assembler_option (arg
, strlen (arg
));
3445 /* POSIX allows separation of -l and the lib arg; canonicalize
3446 by concatenating -l with its arg */
3447 add_infile (concat ("-l", arg
, NULL
), "*");
3452 /* Similarly, canonicalize -L for linkers that may not accept
3453 separate arguments. */
3454 save_switch (concat ("-L", arg
, NULL
), 0, NULL
, validated
, true);
3459 save_switch (concat ("-F", arg
, NULL
), 0, NULL
, validated
, true);
3462 case OPT_save_temps
:
3463 save_temps_flag
= SAVE_TEMPS_CWD
;
3467 case OPT_save_temps_
:
3468 if (strcmp (arg
, "cwd") == 0)
3469 save_temps_flag
= SAVE_TEMPS_CWD
;
3470 else if (strcmp (arg
, "obj") == 0
3471 || strcmp (arg
, "object") == 0)
3472 save_temps_flag
= SAVE_TEMPS_OBJ
;
3474 fatal_error ("%qs is an unknown -save-temps option",
3475 decoded
->orig_option_with_args_text
);
3478 case OPT_no_canonical_prefixes
:
3479 /* Already handled as a special case, so ignored here. */
3485 /* These options set the variables specified in common.opt
3486 automatically, but do need to be saved for spec
3492 struct user_specs
*user
= XNEW (struct user_specs
);
3494 user
->next
= (struct user_specs
*) 0;
3495 user
->filename
= arg
;
3496 if (user_specs_tail
)
3497 user_specs_tail
->next
= user
;
3499 user_specs_head
= user
;
3500 user_specs_tail
= user
;
3506 target_system_root
= arg
;
3507 target_system_root_changed
= 1;
3512 if (report_times_to_file
)
3513 fclose (report_times_to_file
);
3514 report_times_to_file
= fopen (arg
, "a");
3520 This is similar to -v except that there is no execution
3521 of the commands and the echoed arguments are quoted. It
3522 is intended for use in shell scripts to capture the
3523 driver-generated command line. */
3524 verbose_only_flag
++;
3531 size_t len
= strlen (arg
);
3533 /* Catch the case where the user has forgotten to append a
3534 directory separator to the path. Note, they may be using
3535 -B to add an executable name prefix, eg "i386-elf-", in
3536 order to distinguish between multiple installations of
3537 GCC in the same directory. Hence we must check to see
3538 if appending a directory separator actually makes a
3539 valid directory name. */
3540 if (!IS_DIR_SEPARATOR (arg
[len
- 1])
3541 && is_directory (arg
, false))
3543 char *tmp
= XNEWVEC (char, len
+ 2);
3545 tmp
[len
] = DIR_SEPARATOR
;
3550 add_prefix (&exec_prefixes
, arg
, NULL
,
3551 PREFIX_PRIORITY_B_OPT
, 0, 0);
3552 add_prefix (&startfile_prefixes
, arg
, NULL
,
3553 PREFIX_PRIORITY_B_OPT
, 0, 0);
3554 add_prefix (&include_prefixes
, arg
, NULL
,
3555 PREFIX_PRIORITY_B_OPT
, 0, 0);
3562 if (!strcmp (spec_lang
, "none"))
3563 /* Suppress the warning if -xnone comes after the last input
3564 file, because alternate command interfaces like g++ might
3565 find it useful to place -xnone after each input file. */
3568 last_language_n_infiles
= n_infiles
;
3574 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX) || defined(HAVE_TARGET_OBJECT_SUFFIX)
3575 arg
= convert_filename (arg
, ! have_c
, 0);
3577 /* Save the output name in case -save-temps=obj was used. */
3578 save_temps_prefix
= xstrdup (arg
);
3579 /* On some systems, ld cannot handle "-o" without a space. So
3580 split the option from its argument. */
3581 save_switch ("-o", 1, &arg
, validated
, true);
3584 case OPT_static_libgcc
:
3585 case OPT_shared_libgcc
:
3586 case OPT_static_libgfortran
:
3587 case OPT_static_libstdc__
:
3588 /* These are always valid, since gcc.c itself understands the
3589 first two, gfortranspec.c understands -static-libgfortran and
3590 g++spec.c understands -static-libstdc++ */
3595 /* Various driver options need no special processing at this
3596 point, having been handled in a prescan above or being
3597 handled by specs. */
3602 save_switch (decoded
->canonical_option
[0],
3603 decoded
->canonical_option_num_elements
- 1,
3604 &decoded
->canonical_option
[1], validated
, true);
3608 /* Put the driver's standard set of option handlers in *HANDLERS. */
3611 set_option_handlers (struct cl_option_handlers
*handlers
)
3613 handlers
->unknown_option_callback
= driver_unknown_option_callback
;
3614 handlers
->wrong_lang_callback
= driver_wrong_lang_callback
;
3615 handlers
->num_handlers
= 3;
3616 handlers
->handlers
[0].handler
= driver_handle_option
;
3617 handlers
->handlers
[0].mask
= CL_DRIVER
;
3618 handlers
->handlers
[1].handler
= common_handle_option
;
3619 handlers
->handlers
[1].mask
= CL_COMMON
;
3620 handlers
->handlers
[2].handler
= target_handle_option
;
3621 handlers
->handlers
[2].mask
= CL_TARGET
;
3624 /* Create the vector `switches' and its contents.
3625 Store its length in `n_switches'. */
3628 process_command (unsigned int decoded_options_count
,
3629 struct cl_decoded_option
*decoded_options
)
3633 char *tooldir_prefix
, *tooldir_prefix2
;
3634 char *(*get_relative_prefix
) (const char *, const char *,
3635 const char *) = NULL
;
3636 struct cl_option_handlers handlers
;
3639 gcc_exec_prefix
= getenv ("GCC_EXEC_PREFIX");
3643 added_libraries
= 0;
3645 /* Figure compiler version from version string. */
3647 compiler_version
= temp1
= xstrdup (version_string
);
3649 for (; *temp1
; ++temp1
)
3658 /* Handle any -no-canonical-prefixes flag early, to assign the function
3659 that builds relative prefixes. This function creates default search
3660 paths that are needed later in normal option handling. */
3662 for (j
= 1; j
< decoded_options_count
; j
++)
3664 if (decoded_options
[j
].opt_index
== OPT_no_canonical_prefixes
)
3666 get_relative_prefix
= make_relative_prefix_ignore_links
;
3670 if (! get_relative_prefix
)
3671 get_relative_prefix
= make_relative_prefix
;
3673 /* Set up the default search paths. If there is no GCC_EXEC_PREFIX,
3674 see if we can create it from the pathname specified in
3675 decoded_options[0].arg. */
3677 gcc_libexec_prefix
= standard_libexec_prefix
;
3679 /* FIXME: make_relative_prefix doesn't yet work for VMS. */
3680 if (!gcc_exec_prefix
)
3682 gcc_exec_prefix
= get_relative_prefix (decoded_options
[0].arg
,
3683 standard_bindir_prefix
,
3684 standard_exec_prefix
);
3685 gcc_libexec_prefix
= get_relative_prefix (decoded_options
[0].arg
,
3686 standard_bindir_prefix
,
3687 standard_libexec_prefix
);
3688 if (gcc_exec_prefix
)
3689 xputenv (concat ("GCC_EXEC_PREFIX=", gcc_exec_prefix
, NULL
));
3693 /* make_relative_prefix requires a program name, but
3694 GCC_EXEC_PREFIX is typically a directory name with a trailing
3695 / (which is ignored by make_relative_prefix), so append a
3697 char *tmp_prefix
= concat (gcc_exec_prefix
, "gcc", NULL
);
3698 gcc_libexec_prefix
= get_relative_prefix (tmp_prefix
,
3699 standard_exec_prefix
,
3700 standard_libexec_prefix
);
3702 /* The path is unrelocated, so fallback to the original setting. */
3703 if (!gcc_libexec_prefix
)
3704 gcc_libexec_prefix
= standard_libexec_prefix
;
3710 /* From this point onward, gcc_exec_prefix is non-null if the toolchain
3711 is relocated. The toolchain was either relocated using GCC_EXEC_PREFIX
3712 or an automatically created GCC_EXEC_PREFIX from
3713 decoded_options[0].arg. */
3715 /* Do language-specific adjustment/addition of flags. */
3716 lang_specific_driver (&decoded_options
, &decoded_options_count
,
3719 if (gcc_exec_prefix
)
3721 int len
= strlen (gcc_exec_prefix
);
3723 if (len
> (int) sizeof ("/lib/gcc/") - 1
3724 && (IS_DIR_SEPARATOR (gcc_exec_prefix
[len
-1])))
3726 temp
= gcc_exec_prefix
+ len
- sizeof ("/lib/gcc/") + 1;
3727 if (IS_DIR_SEPARATOR (*temp
)
3728 && filename_ncmp (temp
+ 1, "lib", 3) == 0
3729 && IS_DIR_SEPARATOR (temp
[4])
3730 && filename_ncmp (temp
+ 5, "gcc", 3) == 0)
3731 len
-= sizeof ("/lib/gcc/") - 1;
3734 set_std_prefix (gcc_exec_prefix
, len
);
3735 add_prefix (&exec_prefixes
, gcc_libexec_prefix
, "GCC",
3736 PREFIX_PRIORITY_LAST
, 0, 0);
3737 add_prefix (&startfile_prefixes
, gcc_exec_prefix
, "GCC",
3738 PREFIX_PRIORITY_LAST
, 0, 0);
3741 /* COMPILER_PATH and LIBRARY_PATH have values
3742 that are lists of directory names with colons. */
3744 temp
= getenv ("COMPILER_PATH");
3747 const char *startp
, *endp
;
3748 char *nstore
= (char *) alloca (strlen (temp
) + 3);
3750 startp
= endp
= temp
;
3753 if (*endp
== PATH_SEPARATOR
|| *endp
== 0)
3755 strncpy (nstore
, startp
, endp
- startp
);
3757 strcpy (nstore
, concat (".", dir_separator_str
, NULL
));
3758 else if (!IS_DIR_SEPARATOR (endp
[-1]))
3760 nstore
[endp
- startp
] = DIR_SEPARATOR
;
3761 nstore
[endp
- startp
+ 1] = 0;
3764 nstore
[endp
- startp
] = 0;
3765 add_prefix (&exec_prefixes
, nstore
, 0,
3766 PREFIX_PRIORITY_LAST
, 0, 0);
3767 add_prefix (&include_prefixes
, nstore
, 0,
3768 PREFIX_PRIORITY_LAST
, 0, 0);
3771 endp
= startp
= endp
+ 1;
3778 temp
= getenv (LIBRARY_PATH_ENV
);
3779 if (temp
&& *cross_compile
== '0')
3781 const char *startp
, *endp
;
3782 char *nstore
= (char *) alloca (strlen (temp
) + 3);
3784 startp
= endp
= temp
;
3787 if (*endp
== PATH_SEPARATOR
|| *endp
== 0)
3789 strncpy (nstore
, startp
, endp
- startp
);
3791 strcpy (nstore
, concat (".", dir_separator_str
, NULL
));
3792 else if (!IS_DIR_SEPARATOR (endp
[-1]))
3794 nstore
[endp
- startp
] = DIR_SEPARATOR
;
3795 nstore
[endp
- startp
+ 1] = 0;
3798 nstore
[endp
- startp
] = 0;
3799 add_prefix (&startfile_prefixes
, nstore
, NULL
,
3800 PREFIX_PRIORITY_LAST
, 0, 1);
3803 endp
= startp
= endp
+ 1;
3810 /* Use LPATH like LIBRARY_PATH (for the CMU build program). */
3811 temp
= getenv ("LPATH");
3812 if (temp
&& *cross_compile
== '0')
3814 const char *startp
, *endp
;
3815 char *nstore
= (char *) alloca (strlen (temp
) + 3);
3817 startp
= endp
= temp
;
3820 if (*endp
== PATH_SEPARATOR
|| *endp
== 0)
3822 strncpy (nstore
, startp
, endp
- startp
);
3824 strcpy (nstore
, concat (".", dir_separator_str
, NULL
));
3825 else if (!IS_DIR_SEPARATOR (endp
[-1]))
3827 nstore
[endp
- startp
] = DIR_SEPARATOR
;
3828 nstore
[endp
- startp
+ 1] = 0;
3831 nstore
[endp
- startp
] = 0;
3832 add_prefix (&startfile_prefixes
, nstore
, NULL
,
3833 PREFIX_PRIORITY_LAST
, 0, 1);
3836 endp
= startp
= endp
+ 1;
3843 /* Process the options and store input files and switches in their
3846 last_language_n_infiles
= -1;
3848 set_option_handlers (&handlers
);
3850 for (j
= 1; j
< decoded_options_count
; j
++)
3852 switch (decoded_options
[j
].opt_index
)
3864 for (j
= 1; j
< decoded_options_count
; j
++)
3866 if (decoded_options
[j
].opt_index
== OPT_SPECIAL_input_file
)
3868 const char *arg
= decoded_options
[j
].arg
;
3869 const char *p
= strrchr (arg
, '@');
3873 #ifdef HAVE_TARGET_OBJECT_SUFFIX
3874 arg
= convert_filename (arg
, 0, access (arg
, F_OK
));
3876 /* For LTO static archive support we handle input file
3877 specifications that are composed of a filename and
3878 an offset like FNAME@OFFSET. */
3881 && sscanf (p
, "@%li%n", &offset
, &consumed
) >= 1
3882 && strlen (p
) == (unsigned int)consumed
)
3884 fname
= (char *)xmalloc (p
- arg
+ 1);
3885 memcpy (fname
, arg
, p
- arg
);
3886 fname
[p
- arg
] = '\0';
3887 /* Only accept non-stdin and existing FNAME parts, otherwise
3888 try with the full name. */
3889 if (strcmp (fname
, "-") == 0 || access (fname
, F_OK
) < 0)
3892 fname
= xstrdup (arg
);
3896 fname
= xstrdup (arg
);
3898 if (strcmp (fname
, "-") != 0 && access (fname
, F_OK
) < 0)
3899 perror_with_name (fname
);
3901 add_infile (arg
, spec_lang
);
3907 read_cmdline_option (&global_options
, &global_options_set
,
3908 decoded_options
+ j
, UNKNOWN_LOCATION
,
3909 CL_DRIVER
, &handlers
, global_dc
);
3912 /* If -save-temps=obj and -o name, create the prefix to use for %b.
3913 Otherwise just make -save-temps=obj the same as -save-temps=cwd. */
3914 if (save_temps_flag
== SAVE_TEMPS_OBJ
&& save_temps_prefix
!= NULL
)
3916 save_temps_length
= strlen (save_temps_prefix
);
3917 temp
= strrchr (lbasename (save_temps_prefix
), '.');
3920 save_temps_length
-= strlen (temp
);
3921 save_temps_prefix
[save_temps_length
] = '\0';
3925 else if (save_temps_prefix
!= NULL
)
3927 free (save_temps_prefix
);
3928 save_temps_prefix
= NULL
;
3931 if (save_temps_flag
&& use_pipes
)
3933 /* -save-temps overrides -pipe, so that temp files are produced */
3934 if (save_temps_flag
)
3935 warning (0, "-pipe ignored because -save-temps specified");
3941 const char *gcd
= getenv ("GCC_COMPARE_DEBUG");
3943 if (gcd
&& gcd
[0] == '-')
3946 compare_debug_opt
= gcd
;
3948 else if (gcd
&& *gcd
&& strcmp (gcd
, "0"))
3951 compare_debug_opt
= "-gtoggle";
3954 else if (compare_debug
< 0)
3957 gcc_assert (!compare_debug_opt
);
3960 /* Set up the search paths. We add directories that we expect to
3961 contain GNU Toolchain components before directories specified by
3962 the machine description so that we will find GNU components (like
3963 the GNU assembler) before those of the host system. */
3965 /* If we don't know where the toolchain has been installed, use the
3966 configured-in locations. */
3967 if (!gcc_exec_prefix
)
3970 add_prefix (&exec_prefixes
, standard_libexec_prefix
, "GCC",
3971 PREFIX_PRIORITY_LAST
, 1, 0);
3972 add_prefix (&exec_prefixes
, standard_libexec_prefix
, "BINUTILS",
3973 PREFIX_PRIORITY_LAST
, 2, 0);
3974 add_prefix (&exec_prefixes
, standard_exec_prefix
, "BINUTILS",
3975 PREFIX_PRIORITY_LAST
, 2, 0);
3977 add_prefix (&startfile_prefixes
, standard_exec_prefix
, "BINUTILS",
3978 PREFIX_PRIORITY_LAST
, 1, 0);
3981 gcc_assert (!IS_ABSOLUTE_PATH (tooldir_base_prefix
));
3982 tooldir_prefix2
= concat (tooldir_base_prefix
, spec_machine
,
3983 dir_separator_str
, NULL
);
3985 /* Look for tools relative to the location from which the driver is
3986 running, or, if that is not available, the configured prefix. */
3988 = concat (gcc_exec_prefix
? gcc_exec_prefix
: standard_exec_prefix
,
3989 spec_machine
, dir_separator_str
,
3990 spec_version
, dir_separator_str
, tooldir_prefix2
, NULL
);
3991 free (tooldir_prefix2
);
3993 add_prefix (&exec_prefixes
,
3994 concat (tooldir_prefix
, "bin", dir_separator_str
, NULL
),
3995 "BINUTILS", PREFIX_PRIORITY_LAST
, 0, 0);
3996 add_prefix (&startfile_prefixes
,
3997 concat (tooldir_prefix
, "lib", dir_separator_str
, NULL
),
3998 "BINUTILS", PREFIX_PRIORITY_LAST
, 0, 1);
3999 free (tooldir_prefix
);
4001 #if defined(TARGET_SYSTEM_ROOT_RELOCATABLE) && !defined(VMS)
4002 /* If the normal TARGET_SYSTEM_ROOT is inside of $exec_prefix,
4003 then consider it to relocate with the rest of the GCC installation
4004 if GCC_EXEC_PREFIX is set.
4005 ``make_relative_prefix'' is not compiled for VMS, so don't call it. */
4006 if (target_system_root
&& !target_system_root_changed
&& gcc_exec_prefix
)
4008 char *tmp_prefix
= get_relative_prefix (decoded_options
[0].arg
,
4009 standard_bindir_prefix
,
4010 target_system_root
);
4011 if (tmp_prefix
&& access_check (tmp_prefix
, F_OK
) == 0)
4013 target_system_root
= tmp_prefix
;
4014 target_system_root_changed
= 1;
4019 /* More prefixes are enabled in main, after we read the specs file
4020 and determine whether this is cross-compilation or not. */
4022 if (n_infiles
== last_language_n_infiles
&& spec_lang
!= 0)
4023 warning (0, "%<-x %s%> after last input file has no effect", spec_lang
);
4025 /* Synthesize -fcompare-debug flag from the GCC_COMPARE_DEBUG
4026 environment variable. */
4027 if (compare_debug
== 2 || compare_debug
== 3)
4029 const char *opt
= concat ("-fcompare-debug=", compare_debug_opt
, NULL
);
4030 save_switch (opt
, 0, NULL
, false, true);
4034 /* Ensure we only invoke each subprocess once. */
4035 if (print_subprocess_help
|| print_help_list
|| print_version
)
4039 /* Create a dummy input file, so that we can pass
4040 the help option on to the various sub-processes. */
4041 add_infile ("help-dummy", "c");
4045 switches
[n_switches
].part1
= 0;
4047 infiles
[n_infiles
].name
= 0;
4050 /* Store switches not filtered out by %<S in spec in COLLECT_GCC_OPTIONS
4051 and place that in the environment. */
4054 set_collect_gcc_options (void)
4059 /* Build COLLECT_GCC_OPTIONS to have all of the options specified to
4061 obstack_grow (&collect_obstack
, "COLLECT_GCC_OPTIONS=",
4062 sizeof ("COLLECT_GCC_OPTIONS=") - 1);
4065 for (i
= 0; (int) i
< n_switches
; i
++)
4067 const char *const *args
;
4070 obstack_grow (&collect_obstack
, " ", 1);
4074 /* Ignore elided switches. */
4075 if ((switches
[i
].live_cond
4076 & (SWITCH_IGNORE
| SWITCH_KEEP_FOR_GCC
))
4080 obstack_grow (&collect_obstack
, "'-", 2);
4081 q
= switches
[i
].part1
;
4082 while ((p
= strchr (q
, '\'')))
4084 obstack_grow (&collect_obstack
, q
, p
- q
);
4085 obstack_grow (&collect_obstack
, "'\\''", 4);
4088 obstack_grow (&collect_obstack
, q
, strlen (q
));
4089 obstack_grow (&collect_obstack
, "'", 1);
4091 for (args
= switches
[i
].args
; args
&& *args
; args
++)
4093 obstack_grow (&collect_obstack
, " '", 2);
4095 while ((p
= strchr (q
, '\'')))
4097 obstack_grow (&collect_obstack
, q
, p
- q
);
4098 obstack_grow (&collect_obstack
, "'\\''", 4);
4101 obstack_grow (&collect_obstack
, q
, strlen (q
));
4102 obstack_grow (&collect_obstack
, "'", 1);
4105 obstack_grow (&collect_obstack
, "\0", 1);
4106 xputenv (XOBFINISH (&collect_obstack
, char *));
4109 /* Process a spec string, accumulating and running commands. */
4111 /* These variables describe the input file name.
4112 input_file_number is the index on outfiles of this file,
4113 so that the output file name can be stored for later use by %o.
4114 input_basename is the start of the part of the input file
4115 sans all directory names, and basename_length is the number
4116 of characters starting there excluding the suffix .c or whatever. */
4118 static const char *gcc_input_filename
;
4119 static int input_file_number
;
4120 size_t input_filename_length
;
4121 static int basename_length
;
4122 static int suffixed_basename_length
;
4123 static const char *input_basename
;
4124 static const char *input_suffix
;
4125 #ifndef HOST_LACKS_INODE_NUMBERS
4126 static struct stat input_stat
;
4128 static int input_stat_set
;
4130 /* The compiler used to process the current input file. */
4131 static struct compiler
*input_file_compiler
;
4133 /* These are variables used within do_spec and do_spec_1. */
4135 /* Nonzero if an arg has been started and not yet terminated
4136 (with space, tab or newline). */
4137 static int arg_going
;
4139 /* Nonzero means %d or %g has been seen; the next arg to be terminated
4140 is a temporary file name. */
4141 static int delete_this_arg
;
4143 /* Nonzero means %w has been seen; the next arg to be terminated
4144 is the output file name of this compilation. */
4145 static int this_is_output_file
;
4147 /* Nonzero means %s has been seen; the next arg to be terminated
4148 is the name of a library file and we should try the standard
4149 search dirs for it. */
4150 static int this_is_library_file
;
4152 /* Nonzero means %T has been seen; the next arg to be terminated
4153 is the name of a linker script and we should try all of the
4154 standard search dirs for it. If it is found insert a --script
4155 command line switch and then substitute the full path in place,
4156 otherwise generate an error message. */
4157 static int this_is_linker_script
;
4159 /* Nonzero means that the input of this command is coming from a pipe. */
4160 static int input_from_pipe
;
4162 /* Nonnull means substitute this for any suffix when outputting a switches
4164 static const char *suffix_subst
;
4166 /* If there is an argument being accumulated, terminate it and store it. */
4169 end_going_arg (void)
4175 obstack_1grow (&obstack
, 0);
4176 string
= XOBFINISH (&obstack
, const char *);
4177 if (this_is_library_file
)
4178 string
= find_file (string
);
4179 if (this_is_linker_script
)
4181 char * full_script_path
= find_a_file (&startfile_prefixes
, string
, R_OK
, true);
4183 if (full_script_path
== NULL
)
4185 error ("unable to locate default linker script %qs in the library search paths", string
);
4186 /* Script was not found on search path. */
4189 store_arg ("--script", false, false);
4190 string
= full_script_path
;
4192 store_arg (string
, delete_this_arg
, this_is_output_file
);
4193 if (this_is_output_file
)
4194 outfiles
[input_file_number
] = string
;
4200 /* Parse the WRAPPER string which is a comma separated list of the command line
4201 and insert them into the beginning of argbuf. */
4204 insert_wrapper (const char *wrapper
)
4208 char *buf
= xstrdup (wrapper
);
4210 unsigned int old_length
= argbuf
.length ();
4218 while ((p
= strchr (p
, ',')) != NULL
);
4220 argbuf
.safe_grow (old_length
+ n
);
4221 memmove (argbuf
.address () + n
,
4223 old_length
* sizeof (const_char_p
));
4237 while ((p
= strchr (p
, ',')) != NULL
);
4238 gcc_assert (i
== n
);
4241 /* Process the spec SPEC and run the commands specified therein.
4242 Returns 0 if the spec is successfully processed; -1 if failed. */
4245 do_spec (const char *spec
)
4249 value
= do_spec_2 (spec
);
4251 /* Force out any unfinished command.
4252 If -pipe, this forces out the last command if it ended in `|'. */
4255 if (argbuf
.length () > 0
4256 && !strcmp (argbuf
.last (), "|"))
4259 set_collect_gcc_options ();
4261 if (argbuf
.length () > 0)
4269 do_spec_2 (const char *spec
)
4275 delete_this_arg
= 0;
4276 this_is_output_file
= 0;
4277 this_is_library_file
= 0;
4278 this_is_linker_script
= 0;
4279 input_from_pipe
= 0;
4280 suffix_subst
= NULL
;
4282 result
= do_spec_1 (spec
, 0, NULL
);
4290 /* Process the given spec string and add any new options to the end
4291 of the switches/n_switches array. */
4294 do_option_spec (const char *name
, const char *spec
)
4296 unsigned int i
, value_count
, value_len
;
4297 const char *p
, *q
, *value
;
4298 char *tmp_spec
, *tmp_spec_p
;
4300 if (configure_default_options
[0].name
== NULL
)
4303 for (i
= 0; i
< ARRAY_SIZE (configure_default_options
); i
++)
4304 if (strcmp (configure_default_options
[i
].name
, name
) == 0)
4306 if (i
== ARRAY_SIZE (configure_default_options
))
4309 value
= configure_default_options
[i
].value
;
4310 value_len
= strlen (value
);
4312 /* Compute the size of the final spec. */
4315 while ((p
= strstr (p
, "%(VALUE)")) != NULL
)
4321 /* Replace each %(VALUE) by the specified value. */
4322 tmp_spec
= (char *) alloca (strlen (spec
) + 1
4323 + value_count
* (value_len
- strlen ("%(VALUE)")));
4324 tmp_spec_p
= tmp_spec
;
4326 while ((p
= strstr (q
, "%(VALUE)")) != NULL
)
4328 memcpy (tmp_spec_p
, q
, p
- q
);
4329 tmp_spec_p
= tmp_spec_p
+ (p
- q
);
4330 memcpy (tmp_spec_p
, value
, value_len
);
4331 tmp_spec_p
+= value_len
;
4332 q
= p
+ strlen ("%(VALUE)");
4334 strcpy (tmp_spec_p
, q
);
4336 do_self_spec (tmp_spec
);
4339 /* Process the given spec string and add any new options to the end
4340 of the switches/n_switches array. */
4343 do_self_spec (const char *spec
)
4348 do_spec_1 (" ", 0, NULL
);
4350 /* Mark %<S switches processed by do_self_spec to be ignored permanently.
4351 do_self_specs adds the replacements to switches array, so it shouldn't
4352 be processed afterwards. */
4353 for (i
= 0; i
< n_switches
; i
++)
4354 if ((switches
[i
].live_cond
& SWITCH_IGNORE
))
4355 switches
[i
].live_cond
|= SWITCH_IGNORE_PERMANENTLY
;
4357 if (argbuf
.length () > 0)
4359 const char **argbuf_copy
;
4360 struct cl_decoded_option
*decoded_options
;
4361 struct cl_option_handlers handlers
;
4362 unsigned int decoded_options_count
;
4365 /* Create a copy of argbuf with a dummy argv[0] entry for
4366 decode_cmdline_options_to_array. */
4367 argbuf_copy
= XNEWVEC (const char *,
4368 argbuf
.length () + 1);
4369 argbuf_copy
[0] = "";
4370 memcpy (argbuf_copy
+ 1, argbuf
.address (),
4371 argbuf
.length () * sizeof (const char *));
4373 decode_cmdline_options_to_array (argbuf
.length () + 1,
4375 CL_DRIVER
, &decoded_options
,
4376 &decoded_options_count
);
4379 set_option_handlers (&handlers
);
4381 for (j
= 1; j
< decoded_options_count
; j
++)
4383 switch (decoded_options
[j
].opt_index
)
4385 case OPT_SPECIAL_input_file
:
4386 /* Specs should only generate options, not input
4388 if (strcmp (decoded_options
[j
].arg
, "-") != 0)
4389 fatal_error ("switch %qs does not start with %<-%>",
4390 decoded_options
[j
].arg
);
4392 fatal_error ("spec-generated switch is just %<-%>");
4395 case OPT_fcompare_debug_second
:
4396 case OPT_fcompare_debug
:
4397 case OPT_fcompare_debug_
:
4399 /* Avoid duplicate processing of some options from
4400 compare-debug specs; just save them here. */
4401 save_switch (decoded_options
[j
].canonical_option
[0],
4402 (decoded_options
[j
].canonical_option_num_elements
4404 &decoded_options
[j
].canonical_option
[1], false, true);
4408 read_cmdline_option (&global_options
, &global_options_set
,
4409 decoded_options
+ j
, UNKNOWN_LOCATION
,
4410 CL_DRIVER
, &handlers
, global_dc
);
4416 switches
[n_switches
].part1
= 0;
4420 /* Callback for processing %D and %I specs. */
4422 struct spec_path_info
{
4427 bool separate_options
;
4431 spec_path (char *path
, void *data
)
4433 struct spec_path_info
*info
= (struct spec_path_info
*) data
;
4437 if (info
->omit_relative
&& !IS_ABSOLUTE_PATH (path
))
4440 if (info
->append_len
!= 0)
4442 len
= strlen (path
);
4443 memcpy (path
+ len
, info
->append
, info
->append_len
+ 1);
4446 if (!is_directory (path
, true))
4449 do_spec_1 (info
->option
, 1, NULL
);
4450 if (info
->separate_options
)
4451 do_spec_1 (" ", 0, NULL
);
4453 if (info
->append_len
== 0)
4455 len
= strlen (path
);
4456 save
= path
[len
- 1];
4457 if (IS_DIR_SEPARATOR (path
[len
- 1]))
4458 path
[len
- 1] = '\0';
4461 do_spec_1 (path
, 1, NULL
);
4462 do_spec_1 (" ", 0, NULL
);
4464 /* Must not damage the original path. */
4465 if (info
->append_len
== 0)
4466 path
[len
- 1] = save
;
4471 /* Create a temporary FILE with the contents of ARGV. Add @FILE to the
4475 create_at_file (char **argv
)
4477 char *temp_file
= make_temp_file ("");
4478 char *at_argument
= concat ("@", temp_file
, NULL
);
4479 FILE *f
= fopen (temp_file
, "w");
4483 fatal_error ("could not open temporary response file %s",
4486 status
= writeargv (argv
, f
);
4489 fatal_error ("could not write to temporary response file %s",
4492 status
= fclose (f
);
4495 fatal_error ("could not close temporary response file %s",
4498 store_arg (at_argument
, 0, 0);
4500 record_temp_file (temp_file
, !save_temps_flag
, !save_temps_flag
);
4503 /* True if we should compile INFILE. */
4506 compile_input_file_p (struct infile
*infile
)
4508 if ((!infile
->language
) || (infile
->language
[0] != '*'))
4509 if (infile
->incompiler
== input_file_compiler
)
4514 /* Process each member of VEC as a spec. */
4517 do_specs_vec (vec
<char_p
> vec
)
4522 FOR_EACH_VEC_ELT (vec
, ix
, opt
)
4524 do_spec_1 (opt
, 1, NULL
);
4525 /* Make each accumulated option a separate argument. */
4526 do_spec_1 (" ", 0, NULL
);
4530 /* Process the sub-spec SPEC as a portion of a larger spec.
4531 This is like processing a whole spec except that we do
4532 not initialize at the beginning and we do not supply a
4533 newline by default at the end.
4534 INSWITCH nonzero means don't process %-sequences in SPEC;
4535 in this case, % is treated as an ordinary character.
4536 This is used while substituting switches.
4537 INSWITCH nonzero also causes SPC not to terminate an argument.
4539 Value is zero unless a line was finished
4540 and the command on that line reported an error. */
4543 do_spec_1 (const char *spec
, int inswitch
, const char *soft_matched_part
)
4545 const char *p
= spec
;
4550 /* If it's an empty string argument to a switch, keep it as is. */
4551 if (inswitch
&& !*p
)
4555 /* If substituting a switch, treat all chars like letters.
4556 Otherwise, NL, SPC, TAB and % are special. */
4557 switch (inswitch
? 'a' : c
)
4562 if (argbuf
.length () > 0
4563 && !strcmp (argbuf
.last (), "|"))
4565 /* A `|' before the newline means use a pipe here,
4566 but only if -pipe was specified.
4567 Otherwise, execute now and don't pass the `|' as an arg. */
4570 input_from_pipe
= 1;
4577 set_collect_gcc_options ();
4579 if (argbuf
.length () > 0)
4585 /* Reinitialize for a new command, and for a new argument. */
4588 delete_this_arg
= 0;
4589 this_is_output_file
= 0;
4590 this_is_library_file
= 0;
4591 this_is_linker_script
= 0;
4592 input_from_pipe
= 0;
4599 obstack_1grow (&obstack
, c
);
4607 /* Reinitialize for a new argument. */
4608 delete_this_arg
= 0;
4609 this_is_output_file
= 0;
4610 this_is_library_file
= 0;
4611 this_is_linker_script
= 0;
4618 fatal_error ("spec %qs invalid", spec
);
4621 if (save_temps_length
)
4622 obstack_grow (&obstack
, save_temps_prefix
, save_temps_length
);
4624 obstack_grow (&obstack
, input_basename
, basename_length
);
4625 if (compare_debug
< 0)
4626 obstack_grow (&obstack
, ".gk", 3);
4631 if (save_temps_length
)
4632 obstack_grow (&obstack
, save_temps_prefix
, save_temps_length
);
4634 obstack_grow (&obstack
, input_basename
, suffixed_basename_length
);
4635 if (compare_debug
< 0)
4636 obstack_grow (&obstack
, ".gk", 3);
4641 delete_this_arg
= 2;
4644 /* Dump out the directories specified with LIBRARY_PATH,
4645 followed by the absolute directories
4646 that we search for startfiles. */
4649 struct spec_path_info info
;
4652 info
.append_len
= 0;
4653 #ifdef RELATIVE_PREFIX_NOT_LINKDIR
4654 /* Used on systems which record the specified -L dirs
4655 and use them to search for dynamic linking.
4656 Relative directories always come from -B,
4657 and it is better not to use them for searching
4658 at run time. In particular, stage1 loses. */
4659 info
.omit_relative
= true;
4661 info
.omit_relative
= false;
4663 info
.separate_options
= false;
4665 for_each_path (&startfile_prefixes
, true, 0, spec_path
, &info
);
4670 /* %efoo means report an error with `foo' as error message
4671 and don't execute any more commands for this file. */
4675 while (*p
!= 0 && *p
!= '\n')
4677 buf
= (char *) alloca (p
- q
+ 1);
4678 strncpy (buf
, q
, p
- q
);
4680 error ("%s", _(buf
));
4685 /* %nfoo means report a notice with `foo' on stderr. */
4689 while (*p
!= 0 && *p
!= '\n')
4691 buf
= (char *) alloca (p
- q
+ 1);
4692 strncpy (buf
, q
, p
- q
);
4694 inform (0, "%s", _(buf
));
4704 /* If save_temps_flag is off, and the HOST_BIT_BUCKET is
4705 defined, and it is not a directory, and it is
4706 writable, use it. Otherwise, treat this like any
4707 other temporary file. */
4709 if ((!save_temps_flag
)
4710 && (stat (HOST_BIT_BUCKET
, &st
) == 0) && (!S_ISDIR (st
.st_mode
))
4711 && (access (HOST_BIT_BUCKET
, W_OK
) == 0))
4713 obstack_grow (&obstack
, HOST_BIT_BUCKET
,
4714 strlen (HOST_BIT_BUCKET
));
4715 delete_this_arg
= 0;
4720 goto create_temp_file
;
4724 obstack_1grow (&obstack
, '-');
4725 delete_this_arg
= 0;
4728 /* consume suffix */
4729 while (*p
== '.' || ISALNUM ((unsigned char) *p
))
4731 if (p
[0] == '%' && p
[1] == 'O')
4736 goto create_temp_file
;
4740 /* consume suffix */
4741 while (*p
== '.' || ISALNUM ((unsigned char) *p
))
4743 if (p
[0] == '%' && p
[1] == 'O')
4748 goto create_temp_file
;
4754 struct temp_name
*t
;
4756 const char *suffix
= p
;
4757 char *saved_suffix
= NULL
;
4759 while (*p
== '.' || ISALNUM ((unsigned char) *p
))
4761 suffix_length
= p
- suffix
;
4762 if (p
[0] == '%' && p
[1] == 'O')
4765 /* We don't support extra suffix characters after %O. */
4766 if (*p
== '.' || ISALNUM ((unsigned char) *p
))
4767 fatal_error ("spec %qs has invalid %<%%0%c%>", spec
, *p
);
4768 if (suffix_length
== 0)
4769 suffix
= TARGET_OBJECT_SUFFIX
;
4773 = XNEWVEC (char, suffix_length
4774 + strlen (TARGET_OBJECT_SUFFIX
));
4775 strncpy (saved_suffix
, suffix
, suffix_length
);
4776 strcpy (saved_suffix
+ suffix_length
,
4777 TARGET_OBJECT_SUFFIX
);
4779 suffix_length
+= strlen (TARGET_OBJECT_SUFFIX
);
4782 if (compare_debug
< 0)
4784 suffix
= concat (".gk", suffix
, NULL
);
4788 /* If -save-temps=obj and -o were specified, use that for the
4790 if (save_temps_length
)
4793 temp_filename_length
4794 = save_temps_length
+ suffix_length
+ 1;
4795 tmp
= (char *) alloca (temp_filename_length
);
4796 memcpy (tmp
, save_temps_prefix
, save_temps_length
);
4797 memcpy (tmp
+ save_temps_length
, suffix
, suffix_length
);
4798 tmp
[save_temps_length
+ suffix_length
] = '\0';
4799 temp_filename
= save_string (tmp
, save_temps_length
4801 obstack_grow (&obstack
, temp_filename
,
4802 temp_filename_length
);
4804 delete_this_arg
= 0;
4808 /* If the gcc_input_filename has the same suffix specified
4809 for the %g, %u, or %U, and -save-temps is specified,
4810 we could end up using that file as an intermediate
4811 thus clobbering the user's source file (.e.g.,
4812 gcc -save-temps foo.s would clobber foo.s with the
4813 output of cpp0). So check for this condition and
4814 generate a temp file as the intermediate. */
4816 if (save_temps_flag
)
4819 temp_filename_length
= basename_length
+ suffix_length
+ 1;
4820 tmp
= (char *) alloca (temp_filename_length
);
4821 memcpy (tmp
, input_basename
, basename_length
);
4822 memcpy (tmp
+ basename_length
, suffix
, suffix_length
);
4823 tmp
[basename_length
+ suffix_length
] = '\0';
4824 temp_filename
= tmp
;
4826 if (filename_cmp (temp_filename
, gcc_input_filename
) != 0)
4828 #ifndef HOST_LACKS_INODE_NUMBERS
4829 struct stat st_temp
;
4831 /* Note, set_input() resets input_stat_set to 0. */
4832 if (input_stat_set
== 0)
4834 input_stat_set
= stat (gcc_input_filename
,
4836 if (input_stat_set
>= 0)
4840 /* If we have the stat for the gcc_input_filename
4841 and we can do the stat for the temp_filename
4842 then the they could still refer to the same
4843 file if st_dev/st_ino's are the same. */
4844 if (input_stat_set
!= 1
4845 || stat (temp_filename
, &st_temp
) < 0
4846 || input_stat
.st_dev
!= st_temp
.st_dev
4847 || input_stat
.st_ino
!= st_temp
.st_ino
)
4849 /* Just compare canonical pathnames. */
4850 char* input_realname
= lrealpath (gcc_input_filename
);
4851 char* temp_realname
= lrealpath (temp_filename
);
4852 bool files_differ
= filename_cmp (input_realname
, temp_realname
);
4853 free (input_realname
);
4854 free (temp_realname
);
4858 temp_filename
= save_string (temp_filename
,
4859 temp_filename_length
+ 1);
4860 obstack_grow (&obstack
, temp_filename
,
4861 temp_filename_length
);
4863 delete_this_arg
= 0;
4869 /* See if we already have an association of %g/%u/%U and
4871 for (t
= temp_names
; t
; t
= t
->next
)
4872 if (t
->length
== suffix_length
4873 && strncmp (t
->suffix
, suffix
, suffix_length
) == 0
4874 && t
->unique
== (c
== 'u' || c
== 'U' || c
== 'j'))
4877 /* Make a new association if needed. %u and %j
4879 if (t
== 0 || c
== 'u' || c
== 'j')
4883 t
= XNEW (struct temp_name
);
4884 t
->next
= temp_names
;
4887 t
->length
= suffix_length
;
4890 t
->suffix
= saved_suffix
;
4891 saved_suffix
= NULL
;
4894 t
->suffix
= save_string (suffix
, suffix_length
);
4895 t
->unique
= (c
== 'u' || c
== 'U' || c
== 'j');
4896 temp_filename
= make_temp_file (t
->suffix
);
4897 temp_filename_length
= strlen (temp_filename
);
4898 t
->filename
= temp_filename
;
4899 t
->filename_length
= temp_filename_length
;
4902 free (saved_suffix
);
4904 obstack_grow (&obstack
, t
->filename
, t
->filename_length
);
4905 delete_this_arg
= 1;
4913 if (at_file_supplied
)
4915 /* We are going to expand `%i' to `@FILE', where FILE
4916 is a newly-created temporary filename. The filenames
4917 that would usually be expanded in place of %o will be
4918 written to the temporary file. */
4923 for (i
= 0; i
< n_infiles
; i
++)
4924 if (compile_input_file_p (&infiles
[i
]))
4927 argv
= (char **) alloca (sizeof (char *) * (n_files
+ 1));
4929 /* Copy the strings over. */
4930 for (i
= 0, j
= 0; i
< n_infiles
; i
++)
4931 if (compile_input_file_p (&infiles
[i
]))
4933 argv
[j
] = CONST_CAST (char *, infiles
[i
].name
);
4934 infiles
[i
].compiled
= true;
4939 create_at_file (argv
);
4942 for (i
= 0; (int) i
< n_infiles
; i
++)
4943 if (compile_input_file_p (&infiles
[i
]))
4945 store_arg (infiles
[i
].name
, 0, 0);
4946 infiles
[i
].compiled
= true;
4951 obstack_grow (&obstack
, gcc_input_filename
,
4952 input_filename_length
);
4959 struct spec_path_info info
;
4963 do_spec_1 ("-imultilib", 1, NULL
);
4964 /* Make this a separate argument. */
4965 do_spec_1 (" ", 0, NULL
);
4966 do_spec_1 (multilib_dir
, 1, NULL
);
4967 do_spec_1 (" ", 0, NULL
);
4972 do_spec_1 ("-imultiarch", 1, NULL
);
4973 /* Make this a separate argument. */
4974 do_spec_1 (" ", 0, NULL
);
4975 do_spec_1 (multiarch_dir
, 1, NULL
);
4976 do_spec_1 (" ", 0, NULL
);
4979 if (gcc_exec_prefix
)
4981 do_spec_1 ("-iprefix", 1, NULL
);
4982 /* Make this a separate argument. */
4983 do_spec_1 (" ", 0, NULL
);
4984 do_spec_1 (gcc_exec_prefix
, 1, NULL
);
4985 do_spec_1 (" ", 0, NULL
);
4988 if (target_system_root_changed
||
4989 (target_system_root
&& target_sysroot_hdrs_suffix
))
4991 do_spec_1 ("-isysroot", 1, NULL
);
4992 /* Make this a separate argument. */
4993 do_spec_1 (" ", 0, NULL
);
4994 do_spec_1 (target_system_root
, 1, NULL
);
4995 if (target_sysroot_hdrs_suffix
)
4996 do_spec_1 (target_sysroot_hdrs_suffix
, 1, NULL
);
4997 do_spec_1 (" ", 0, NULL
);
5000 info
.option
= "-isystem";
5001 info
.append
= "include";
5002 info
.append_len
= strlen (info
.append
);
5003 info
.omit_relative
= false;
5004 info
.separate_options
= true;
5006 for_each_path (&include_prefixes
, false, info
.append_len
,
5009 info
.append
= "include-fixed";
5010 if (*sysroot_hdrs_suffix_spec
)
5011 info
.append
= concat (info
.append
, dir_separator_str
,
5012 multilib_dir
, NULL
);
5013 info
.append_len
= strlen (info
.append
);
5014 for_each_path (&include_prefixes
, false, info
.append_len
,
5021 int max
= n_infiles
;
5022 max
+= lang_specific_extra_outfiles
;
5024 if (HAVE_GNU_LD
&& at_file_supplied
)
5026 /* We are going to expand `%o' to `@FILE', where FILE
5027 is a newly-created temporary filename. The filenames
5028 that would usually be expanded in place of %o will be
5029 written to the temporary file. */
5034 /* Convert OUTFILES into a form suitable for writeargv. */
5036 /* Determine how many are non-NULL. */
5037 for (n_files
= 0, i
= 0; i
< max
; i
++)
5038 n_files
+= outfiles
[i
] != NULL
;
5040 argv
= (char **) alloca (sizeof (char *) * (n_files
+ 1));
5042 /* Copy the strings over. */
5043 for (i
= 0, j
= 0; i
< max
; i
++)
5046 argv
[j
] = CONST_CAST (char *, outfiles
[i
]);
5051 create_at_file (argv
);
5054 for (i
= 0; i
< max
; i
++)
5056 store_arg (outfiles
[i
], 0, 0);
5061 obstack_grow (&obstack
, TARGET_OBJECT_SUFFIX
, strlen (TARGET_OBJECT_SUFFIX
));
5066 this_is_library_file
= 1;
5070 this_is_linker_script
= 1;
5074 outfiles
[input_file_number
] = NULL
;
5078 this_is_output_file
= 1;
5083 unsigned int cur_index
= argbuf
.length ();
5084 /* Handle the {...} following the %W. */
5086 fatal_error ("spec %qs has invalid %<%%W%c%>", spec
, *p
);
5087 p
= handle_braces (p
+ 1);
5091 /* If any args were output, mark the last one for deletion
5093 if (argbuf
.length () != cur_index
)
5094 record_temp_file (argbuf
.last (), 0, 1);
5098 /* %x{OPTION} records OPTION for %X to output. */
5106 /* Skip past the option value and make a copy. */
5108 fatal_error ("spec %qs has invalid %<%%x%c%>", spec
, *p
);
5111 string
= save_string (p1
+ 1, p
- p1
- 2);
5113 /* See if we already recorded this option. */
5114 FOR_EACH_VEC_ELT (linker_options
, ix
, opt
)
5115 if (! strcmp (string
, opt
))
5121 /* This option is new; add it. */
5122 add_linker_option (string
, strlen (string
));
5127 /* Dump out the options accumulated previously using %x. */
5129 do_specs_vec (linker_options
);
5132 /* Dump out the options accumulated previously using -Wa,. */
5134 do_specs_vec (assembler_options
);
5137 /* Dump out the options accumulated previously using -Wp,. */
5139 do_specs_vec (preprocessor_options
);
5142 /* Here are digits and numbers that just process
5143 a certain constant string as a spec. */
5146 value
= do_spec_1 (cc1_spec
, 0, NULL
);
5152 value
= do_spec_1 (cc1plus_spec
, 0, NULL
);
5158 value
= do_spec_1 (asm_spec
, 0, NULL
);
5164 value
= do_spec_1 (asm_final_spec
, 0, NULL
);
5171 const char *const spec
5172 = (input_file_compiler
->cpp_spec
5173 ? input_file_compiler
->cpp_spec
5175 value
= do_spec_1 (spec
, 0, NULL
);
5182 value
= do_spec_1 (endfile_spec
, 0, NULL
);
5188 value
= do_spec_1 (link_spec
, 0, NULL
);
5194 value
= do_spec_1 (lib_spec
, 0, NULL
);
5200 if (multilib_os_dir
== NULL
)
5201 obstack_1grow (&obstack
, '.');
5203 obstack_grow (&obstack
, multilib_os_dir
,
5204 strlen (multilib_os_dir
));
5208 value
= do_spec_1 (libgcc_spec
, 0, NULL
);
5214 /* We assume there is a directory
5215 separator at the end of this string. */
5216 if (target_system_root
)
5218 obstack_grow (&obstack
, target_system_root
,
5219 strlen (target_system_root
));
5220 if (target_sysroot_suffix
)
5221 obstack_grow (&obstack
, target_sysroot_suffix
,
5222 strlen (target_sysroot_suffix
));
5227 value
= do_spec_1 (startfile_spec
, 0, NULL
);
5232 /* Here we define characters other than letters and digits. */
5235 p
= handle_braces (p
);
5241 p
= handle_spec_function (p
);
5247 obstack_1grow (&obstack
, '%');
5254 while (p
[len
] && p
[len
] != ' ' && p
[len
] != '%')
5256 suffix_subst
= save_string (p
- 1, len
+ 1);
5261 /* Henceforth ignore the option(s) matching the pattern
5267 int have_wildcard
= 0;
5272 switch_option
= SWITCH_IGNORE
| SWITCH_KEEP_FOR_GCC
;
5274 switch_option
= SWITCH_IGNORE
;
5276 while (p
[len
] && p
[len
] != ' ' && p
[len
] != '\t')
5279 if (p
[len
-1] == '*')
5282 for (i
= 0; i
< n_switches
; i
++)
5283 if (!strncmp (switches
[i
].part1
, p
, len
- have_wildcard
)
5284 && (have_wildcard
|| switches
[i
].part1
[len
] == '\0'))
5286 switches
[i
].live_cond
|= switch_option
;
5287 /* User switch be validated from validate_all_switches.
5288 when the definition is seen from the spec file.
5289 If not defined anywhere, will be rejected. */
5290 if (switches
[i
].known
)
5291 switches
[i
].validated
= true;
5299 if (soft_matched_part
)
5301 if (soft_matched_part
[0])
5302 do_spec_1 (soft_matched_part
, 1, NULL
);
5303 do_spec_1 (" ", 0, NULL
);
5306 /* Catch the case where a spec string contains something like
5307 '%{foo:%*}'. i.e. there is no * in the pattern on the left
5308 hand side of the :. */
5309 error ("spec failure: %<%%*%> has not been initialized by pattern match");
5312 /* Process a string found as the value of a spec given by name.
5313 This feature allows individual machine descriptions
5314 to add and use their own specs. */
5317 const char *name
= p
;
5318 struct spec_list
*sl
;
5321 /* The string after the S/P is the name of a spec that is to be
5323 while (*p
&& *p
!= ')')
5326 /* See if it's in the list. */
5327 for (len
= p
- name
, sl
= specs
; sl
; sl
= sl
->next
)
5328 if (sl
->name_len
== len
&& !strncmp (sl
->name
, name
, len
))
5330 name
= *(sl
->ptr_spec
);
5332 fnotice (stderr
, "Processing spec (%s), which is '%s'\n",
5340 value
= do_spec_1 (name
, 0, NULL
);
5345 /* Discard the closing paren. */
5352 error ("spec failure: unrecognized spec option %qc", c
);
5358 /* Backslash: treat next character as ordinary. */
5363 /* Ordinary character: put it into the current argument. */
5364 obstack_1grow (&obstack
, c
);
5368 /* End of string. If we are processing a spec function, we need to
5369 end any pending argument. */
5370 if (processing_spec_function
)
5376 /* Look up a spec function. */
5378 static const struct spec_function
*
5379 lookup_spec_function (const char *name
)
5381 const struct spec_function
*sf
;
5383 for (sf
= static_spec_functions
; sf
->name
!= NULL
; sf
++)
5384 if (strcmp (sf
->name
, name
) == 0)
5390 /* Evaluate a spec function. */
5393 eval_spec_function (const char *func
, const char *args
)
5395 const struct spec_function
*sf
;
5396 const char *funcval
;
5398 /* Saved spec processing context. */
5399 vec
<const_char_p
> save_argbuf
;
5402 int save_delete_this_arg
;
5403 int save_this_is_output_file
;
5404 int save_this_is_library_file
;
5405 int save_input_from_pipe
;
5406 int save_this_is_linker_script
;
5407 const char *save_suffix_subst
;
5409 int save_growing_size
;
5410 void *save_growing_value
;
5412 sf
= lookup_spec_function (func
);
5414 fatal_error ("unknown spec function %qs", func
);
5416 /* Push the spec processing context. */
5417 save_argbuf
= argbuf
;
5419 save_arg_going
= arg_going
;
5420 save_delete_this_arg
= delete_this_arg
;
5421 save_this_is_output_file
= this_is_output_file
;
5422 save_this_is_library_file
= this_is_library_file
;
5423 save_this_is_linker_script
= this_is_linker_script
;
5424 save_input_from_pipe
= input_from_pipe
;
5425 save_suffix_subst
= suffix_subst
;
5427 /* If we have some object growing now, finalize it so the args and function
5428 eval proceed from a cleared context. This is needed to prevent the first
5429 constructed arg from mistakenly including the growing value. We'll push
5430 this value back on the obstack once the function evaluation is done, to
5431 restore a consistent processing context for our caller. This is fine as
5432 the address of growing objects isn't guaranteed to remain stable until
5433 they are finalized, and we expect this situation to be rare enough for
5434 the extra copy not to be an issue. */
5435 save_growing_size
= obstack_object_size (&obstack
);
5436 if (save_growing_size
> 0)
5437 save_growing_value
= obstack_finish (&obstack
);
5439 /* Create a new spec processing context, and build the function
5443 if (do_spec_2 (args
) < 0)
5444 fatal_error ("error in args to spec function %qs", func
);
5446 /* argbuf_index is an index for the next argument to be inserted, and
5447 so contains the count of the args already inserted. */
5449 funcval
= (*sf
->func
) (argbuf
.length (),
5452 /* Pop the spec processing context. */
5454 argbuf
= save_argbuf
;
5456 arg_going
= save_arg_going
;
5457 delete_this_arg
= save_delete_this_arg
;
5458 this_is_output_file
= save_this_is_output_file
;
5459 this_is_library_file
= save_this_is_library_file
;
5460 this_is_linker_script
= save_this_is_linker_script
;
5461 input_from_pipe
= save_input_from_pipe
;
5462 suffix_subst
= save_suffix_subst
;
5464 if (save_growing_size
> 0)
5465 obstack_grow (&obstack
, save_growing_value
, save_growing_size
);
5470 /* Handle a spec function call of the form:
5474 ARGS is processed as a spec in a separate context and split into an
5475 argument vector in the normal fashion. The function returns a string
5476 containing a spec which we then process in the caller's context, or
5477 NULL if no processing is required. */
5480 handle_spec_function (const char *p
)
5483 const char *endp
, *funcval
;
5486 processing_spec_function
++;
5488 /* Get the function name. */
5489 for (endp
= p
; *endp
!= '\0'; endp
++)
5491 if (*endp
== '(') /* ) */
5493 /* Only allow [A-Za-z0-9], -, and _ in function names. */
5494 if (!ISALNUM (*endp
) && !(*endp
== '-' || *endp
== '_'))
5495 fatal_error ("malformed spec function name");
5497 if (*endp
!= '(') /* ) */
5498 fatal_error ("no arguments for spec function");
5499 func
= save_string (p
, endp
- p
);
5502 /* Get the arguments. */
5503 for (count
= 0; *endp
!= '\0'; endp
++)
5512 else if (*endp
== '(') /* ) */
5517 fatal_error ("malformed spec function arguments");
5518 args
= save_string (p
, endp
- p
);
5521 /* p now points to just past the end of the spec function expression. */
5523 funcval
= eval_spec_function (func
, args
);
5524 if (funcval
!= NULL
&& do_spec_1 (funcval
, 0, NULL
) < 0)
5530 processing_spec_function
--;
5535 /* Inline subroutine of handle_braces. Returns true if the current
5536 input suffix matches the atom bracketed by ATOM and END_ATOM. */
5538 input_suffix_matches (const char *atom
, const char *end_atom
)
5540 return (input_suffix
5541 && !strncmp (input_suffix
, atom
, end_atom
- atom
)
5542 && input_suffix
[end_atom
- atom
] == '\0');
5545 /* Subroutine of handle_braces. Returns true if the current
5546 input file's spec name matches the atom bracketed by ATOM and END_ATOM. */
5548 input_spec_matches (const char *atom
, const char *end_atom
)
5550 return (input_file_compiler
5551 && input_file_compiler
->suffix
5552 && input_file_compiler
->suffix
[0] != '\0'
5553 && !strncmp (input_file_compiler
->suffix
+ 1, atom
,
5555 && input_file_compiler
->suffix
[end_atom
- atom
+ 1] == '\0');
5558 /* Subroutine of handle_braces. Returns true if a switch
5559 matching the atom bracketed by ATOM and END_ATOM appeared on the
5562 switch_matches (const char *atom
, const char *end_atom
, int starred
)
5565 int len
= end_atom
- atom
;
5566 int plen
= starred
? len
: -1;
5568 for (i
= 0; i
< n_switches
; i
++)
5569 if (!strncmp (switches
[i
].part1
, atom
, len
)
5570 && (starred
|| switches
[i
].part1
[len
] == '\0')
5571 && check_live_switch (i
, plen
))
5574 /* Check if a switch with separated form matching the atom.
5575 We check -D and -U switches. */
5576 else if (switches
[i
].args
!= 0)
5578 if ((*switches
[i
].part1
== 'D' || *switches
[i
].part1
== 'U')
5579 && *switches
[i
].part1
== atom
[0])
5581 if (!strncmp (switches
[i
].args
[0], &atom
[1], len
- 1)
5582 && (starred
|| (switches
[i
].part1
[1] == '\0'
5583 && switches
[i
].args
[0][len
- 1] == '\0'))
5584 && check_live_switch (i
, (starred
? 1 : -1)))
5592 /* Inline subroutine of handle_braces. Mark all of the switches which
5593 match ATOM (extends to END_ATOM; STARRED indicates whether there
5594 was a star after the atom) for later processing. */
5596 mark_matching_switches (const char *atom
, const char *end_atom
, int starred
)
5599 int len
= end_atom
- atom
;
5600 int plen
= starred
? len
: -1;
5602 for (i
= 0; i
< n_switches
; i
++)
5603 if (!strncmp (switches
[i
].part1
, atom
, len
)
5604 && (starred
|| switches
[i
].part1
[len
] == '\0')
5605 && check_live_switch (i
, plen
))
5606 switches
[i
].ordering
= 1;
5609 /* Inline subroutine of handle_braces. Process all the currently
5610 marked switches through give_switch, and clear the marks. */
5612 process_marked_switches (void)
5616 for (i
= 0; i
< n_switches
; i
++)
5617 if (switches
[i
].ordering
== 1)
5619 switches
[i
].ordering
= 0;
5624 /* Handle a %{ ... } construct. P points just inside the leading {.
5625 Returns a pointer one past the end of the brace block, or 0
5626 if we call do_spec_1 and that returns -1. */
5629 handle_braces (const char *p
)
5631 const char *atom
, *end_atom
;
5632 const char *d_atom
= NULL
, *d_end_atom
= NULL
;
5633 const char *orig
= p
;
5641 bool a_must_be_last
= false;
5642 bool ordered_set
= false;
5643 bool disjunct_set
= false;
5644 bool disj_matched
= false;
5645 bool disj_starred
= true;
5646 bool n_way_choice
= false;
5647 bool n_way_matched
= false;
5649 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
5656 /* Scan one "atom" (S in the description above of %{}, possibly
5657 with '!', '.', '@', ',', or '*' modifiers). */
5659 a_is_suffix
= false;
5660 a_is_starred
= false;
5661 a_is_negated
= false;
5662 a_is_spectype
= false;
5666 p
++, a_is_negated
= true;
5670 p
++, a_is_suffix
= true;
5672 p
++, a_is_spectype
= true;
5675 while (ISIDNUM(*p
) || *p
== '-' || *p
== '+' || *p
== '='
5676 || *p
== ',' || *p
== '.' || *p
== '@')
5681 p
++, a_is_starred
= 1;
5687 /* Substitute the switch(es) indicated by the current atom. */
5689 if (disjunct_set
|| n_way_choice
|| a_is_negated
|| a_is_suffix
5690 || a_is_spectype
|| atom
== end_atom
)
5693 mark_matching_switches (atom
, end_atom
, a_is_starred
);
5696 process_marked_switches ();
5700 /* Substitute some text if the current atom appears as a switch
5702 disjunct_set
= true;
5706 if (atom
== end_atom
)
5708 if (!n_way_choice
|| disj_matched
|| *p
== '|'
5709 || a_is_negated
|| a_is_suffix
|| a_is_spectype
5713 /* An empty term may appear as the last choice of an
5714 N-way choice set; it means "otherwise". */
5715 a_must_be_last
= true;
5716 disj_matched
= !n_way_matched
;
5717 disj_starred
= false;
5721 if ((a_is_suffix
|| a_is_spectype
) && a_is_starred
)
5725 disj_starred
= false;
5727 /* Don't bother testing this atom if we already have a
5729 if (!disj_matched
&& !n_way_matched
)
5732 a_matched
= input_suffix_matches (atom
, end_atom
);
5733 else if (a_is_spectype
)
5734 a_matched
= input_spec_matches (atom
, end_atom
);
5736 a_matched
= switch_matches (atom
, end_atom
, a_is_starred
);
5738 if (a_matched
!= a_is_negated
)
5740 disj_matched
= true;
5742 d_end_atom
= end_atom
;
5749 /* Found the body, that is, the text to substitute if the
5750 current disjunction matches. */
5751 p
= process_brace_body (p
+ 1, d_atom
, d_end_atom
, disj_starred
,
5752 disj_matched
&& !n_way_matched
);
5756 /* If we have an N-way choice, reset state for the next
5760 n_way_choice
= true;
5761 n_way_matched
|= disj_matched
;
5762 disj_matched
= false;
5763 disj_starred
= true;
5764 d_atom
= d_end_atom
= NULL
;
5773 while (*p
++ != '}');
5778 fatal_error ("braced spec %qs is invalid at %qc", orig
, *p
);
5783 /* Subroutine of handle_braces. Scan and process a brace substitution body
5784 (X in the description of %{} syntax). P points one past the colon;
5785 ATOM and END_ATOM bracket the first atom which was found to be true
5786 (present) in the current disjunction; STARRED indicates whether all
5787 the atoms in the current disjunction were starred (for syntax validation);
5788 MATCHED indicates whether the disjunction matched or not, and therefore
5789 whether or not the body is to be processed through do_spec_1 or just
5790 skipped. Returns a pointer to the closing } or ;, or 0 if do_spec_1
5794 process_brace_body (const char *p
, const char *atom
, const char *end_atom
,
5795 int starred
, int matched
)
5797 const char *body
, *end_body
;
5798 unsigned int nesting_level
;
5799 bool have_subst
= false;
5801 /* Locate the closing } or ;, honoring nested braces.
5802 Trim trailing whitespace. */
5811 if (!--nesting_level
)
5814 else if (*p
== ';' && nesting_level
== 1)
5816 else if (*p
== '%' && p
[1] == '*' && nesting_level
== 1)
5818 else if (*p
== '\0')
5824 while (end_body
[-1] == ' ' || end_body
[-1] == '\t')
5827 if (have_subst
&& !starred
)
5832 /* Copy the substitution body to permanent storage and execute it.
5833 If have_subst is false, this is a simple matter of running the
5834 body through do_spec_1... */
5835 char *string
= save_string (body
, end_body
- body
);
5838 if (do_spec_1 (string
, 0, NULL
) < 0)
5843 /* ... but if have_subst is true, we have to process the
5844 body once for each matching switch, with %* set to the
5845 variant part of the switch. */
5846 unsigned int hard_match_len
= end_atom
- atom
;
5849 for (i
= 0; i
< n_switches
; i
++)
5850 if (!strncmp (switches
[i
].part1
, atom
, hard_match_len
)
5851 && check_live_switch (i
, hard_match_len
))
5853 if (do_spec_1 (string
, 0,
5854 &switches
[i
].part1
[hard_match_len
]) < 0)
5856 /* Pass any arguments this switch has. */
5858 suffix_subst
= NULL
;
5866 fatal_error ("braced spec body %qs is invalid", body
);
5869 /* Return 0 iff switch number SWITCHNUM is obsoleted by a later switch
5870 on the command line. PREFIX_LENGTH is the length of XXX in an {XXX*}
5871 spec, or -1 if either exact match or %* is used.
5873 A -O switch is obsoleted by a later -O switch. A -f, -g, -m, or -W switch
5874 whose value does not begin with "no-" is obsoleted by the same value
5875 with the "no-", similarly for a switch with the "no-" prefix. */
5878 check_live_switch (int switchnum
, int prefix_length
)
5880 const char *name
= switches
[switchnum
].part1
;
5883 /* If we already processed this switch and determined if it was
5884 live or not, return our past determination. */
5885 if (switches
[switchnum
].live_cond
!= 0)
5886 return ((switches
[switchnum
].live_cond
& SWITCH_LIVE
) != 0
5887 && (switches
[switchnum
].live_cond
& SWITCH_FALSE
) == 0
5888 && (switches
[switchnum
].live_cond
& SWITCH_IGNORE_PERMANENTLY
)
5891 /* In the common case of {<at-most-one-letter>*}, a negating
5892 switch would always match, so ignore that case. We will just
5893 send the conflicting switches to the compiler phase. */
5894 if (prefix_length
>= 0 && prefix_length
<= 1)
5897 /* Now search for duplicate in a manner that depends on the name. */
5901 for (i
= switchnum
+ 1; i
< n_switches
; i
++)
5902 if (switches
[i
].part1
[0] == 'O')
5904 switches
[switchnum
].validated
= true;
5905 switches
[switchnum
].live_cond
= SWITCH_FALSE
;
5910 case 'W': case 'f': case 'm': case 'g':
5911 if (! strncmp (name
+ 1, "no-", 3))
5913 /* We have Xno-YYY, search for XYYY. */
5914 for (i
= switchnum
+ 1; i
< n_switches
; i
++)
5915 if (switches
[i
].part1
[0] == name
[0]
5916 && ! strcmp (&switches
[i
].part1
[1], &name
[4]))
5918 /* --specs are validated with the validate_switches mechanism. */
5919 if (switches
[switchnum
].known
)
5920 switches
[switchnum
].validated
= true;
5921 switches
[switchnum
].live_cond
= SWITCH_FALSE
;
5927 /* We have XYYY, search for Xno-YYY. */
5928 for (i
= switchnum
+ 1; i
< n_switches
; i
++)
5929 if (switches
[i
].part1
[0] == name
[0]
5930 && switches
[i
].part1
[1] == 'n'
5931 && switches
[i
].part1
[2] == 'o'
5932 && switches
[i
].part1
[3] == '-'
5933 && !strcmp (&switches
[i
].part1
[4], &name
[1]))
5935 /* --specs are validated with the validate_switches mechanism. */
5936 if (switches
[switchnum
].known
)
5937 switches
[switchnum
].validated
= true;
5938 switches
[switchnum
].live_cond
= SWITCH_FALSE
;
5945 /* Otherwise the switch is live. */
5946 switches
[switchnum
].live_cond
|= SWITCH_LIVE
;
5950 /* Pass a switch to the current accumulating command
5951 in the same form that we received it.
5952 SWITCHNUM identifies the switch; it is an index into
5953 the vector of switches gcc received, which is `switches'.
5954 This cannot fail since it never finishes a command line.
5956 If OMIT_FIRST_WORD is nonzero, then we omit .part1 of the argument. */
5959 give_switch (int switchnum
, int omit_first_word
)
5961 if ((switches
[switchnum
].live_cond
& SWITCH_IGNORE
) != 0)
5964 if (!omit_first_word
)
5966 do_spec_1 ("-", 0, NULL
);
5967 do_spec_1 (switches
[switchnum
].part1
, 1, NULL
);
5970 if (switches
[switchnum
].args
!= 0)
5973 for (p
= switches
[switchnum
].args
; *p
; p
++)
5975 const char *arg
= *p
;
5977 do_spec_1 (" ", 0, NULL
);
5980 unsigned length
= strlen (arg
);
5983 while (length
-- && !IS_DIR_SEPARATOR (arg
[length
]))
5984 if (arg
[length
] == '.')
5986 (CONST_CAST(char *, arg
))[length
] = 0;
5990 do_spec_1 (arg
, 1, NULL
);
5992 (CONST_CAST(char *, arg
))[length
] = '.';
5993 do_spec_1 (suffix_subst
, 1, NULL
);
5996 do_spec_1 (arg
, 1, NULL
);
6000 do_spec_1 (" ", 0, NULL
);
6001 switches
[switchnum
].validated
= true;
6004 /* Search for a file named NAME trying various prefixes including the
6005 user's -B prefix and some standard ones.
6006 Return the absolute file name found. If nothing is found, return NAME. */
6009 find_file (const char *name
)
6011 char *newname
= find_a_file (&startfile_prefixes
, name
, R_OK
, true);
6012 return newname
? newname
: name
;
6015 /* Determine whether a directory exists. If LINKER, return 0 for
6016 certain fixed names not needed by the linker. */
6019 is_directory (const char *path1
, bool linker
)
6026 /* Ensure the string ends with "/.". The resulting path will be a
6027 directory even if the given path is a symbolic link. */
6028 len1
= strlen (path1
);
6029 path
= (char *) alloca (3 + len1
);
6030 memcpy (path
, path1
, len1
);
6032 if (!IS_DIR_SEPARATOR (cp
[-1]))
6033 *cp
++ = DIR_SEPARATOR
;
6037 /* Exclude directories that the linker is known to search. */
6039 && IS_DIR_SEPARATOR (path
[0])
6041 && filename_ncmp (path
+ 1, "lib", 3) == 0)
6043 && filename_ncmp (path
+ 1, "usr", 3) == 0
6044 && IS_DIR_SEPARATOR (path
[4])
6045 && filename_ncmp (path
+ 5, "lib", 3) == 0)))
6048 return (stat (path
, &st
) >= 0 && S_ISDIR (st
.st_mode
));
6051 /* Set up the various global variables to indicate that we're processing
6052 the input file named FILENAME. */
6055 set_input (const char *filename
)
6059 gcc_input_filename
= filename
;
6060 input_filename_length
= strlen (gcc_input_filename
);
6061 input_basename
= lbasename (gcc_input_filename
);
6063 /* Find a suffix starting with the last period,
6064 and set basename_length to exclude that suffix. */
6065 basename_length
= strlen (input_basename
);
6066 suffixed_basename_length
= basename_length
;
6067 p
= input_basename
+ basename_length
;
6068 while (p
!= input_basename
&& *p
!= '.')
6070 if (*p
== '.' && p
!= input_basename
)
6072 basename_length
= p
- input_basename
;
6073 input_suffix
= p
+ 1;
6078 /* If a spec for 'g', 'u', or 'U' is seen with -save-temps then
6079 we will need to do a stat on the gcc_input_filename. The
6080 INPUT_STAT_SET signals that the stat is needed. */
6084 /* On fatal signals, delete all the temporary files. */
6087 fatal_signal (int signum
)
6089 signal (signum
, SIG_DFL
);
6090 delete_failure_queue ();
6091 delete_temp_files ();
6092 /* Get the same signal again, this time not handled,
6093 so its normal effect occurs. */
6094 kill (getpid (), signum
);
6097 /* Compare the contents of the two files named CMPFILE[0] and
6098 CMPFILE[1]. Return zero if they're identical, nonzero
6102 compare_files (char *cmpfile
[])
6105 FILE *temp
[2] = { NULL
, NULL
};
6111 void *map
[2] = { NULL
, NULL
};
6113 for (i
= 0; i
< 2; i
++)
6117 if (stat (cmpfile
[i
], &st
) < 0 || !S_ISREG (st
.st_mode
))
6119 error ("%s: could not determine length of compare-debug file %s",
6120 gcc_input_filename
, cmpfile
[i
]);
6125 length
[i
] = st
.st_size
;
6128 if (!ret
&& length
[0] != length
[1])
6130 error ("%s: -fcompare-debug failure (length)", gcc_input_filename
);
6135 for (i
= 0; i
< 2; i
++)
6137 int fd
= open (cmpfile
[i
], O_RDONLY
);
6140 error ("%s: could not open compare-debug file %s",
6141 gcc_input_filename
, cmpfile
[i
]);
6146 map
[i
] = mmap (NULL
, length
[i
], PROT_READ
, MAP_PRIVATE
, fd
, 0);
6149 if (map
[i
] == (void *) MAP_FAILED
)
6158 if (memcmp (map
[0], map
[1], length
[0]) != 0)
6160 error ("%s: -fcompare-debug failure", gcc_input_filename
);
6165 for (i
= 0; i
< 2; i
++)
6167 munmap ((caddr_t
) map
[i
], length
[i
]);
6176 for (i
= 0; i
< 2; i
++)
6178 temp
[i
] = fopen (cmpfile
[i
], "r");
6181 error ("%s: could not open compare-debug file %s",
6182 gcc_input_filename
, cmpfile
[i
]);
6188 if (!ret
&& temp
[0] && temp
[1])
6192 c0
= fgetc (temp
[0]);
6193 c1
= fgetc (temp
[1]);
6197 error ("%s: -fcompare-debug failure",
6198 gcc_input_filename
);
6207 for (i
= 1; i
>= 0; i
--)
6216 extern int main (int, char **);
6219 main (int argc
, char **argv
)
6223 int linker_was_run
= 0;
6224 int lang_n_infiles
= 0;
6225 int num_linker_inputs
= 0;
6226 char *explicit_link_files
;
6228 char *lto_wrapper_file
;
6230 struct user_specs
*uptr
;
6231 char **old_argv
= argv
;
6232 struct cl_decoded_option
*decoded_options
;
6233 unsigned int decoded_options_count
;
6235 p
= argv
[0] + strlen (argv
[0]);
6236 while (p
!= argv
[0] && !IS_DIR_SEPARATOR (p
[-1]))
6240 xmalloc_set_program_name (progname
);
6242 expandargv (&argc
, &argv
);
6244 /* Determine if any expansions were made. */
6245 if (argv
!= old_argv
)
6246 at_file_supplied
= true;
6248 /* Register the language-independent parameters. */
6249 global_init_params ();
6252 init_options_struct (&global_options
, &global_options_set
);
6254 decode_cmdline_options_to_array (argc
, CONST_CAST2 (const char **, char **,
6257 &decoded_options
, &decoded_options_count
);
6259 /* Unlock the stdio streams. */
6260 unlock_std_streams ();
6262 gcc_init_libintl ();
6264 diagnostic_initialize (global_dc
, 0);
6266 #ifdef GCC_DRIVER_HOST_INITIALIZATION
6267 /* Perform host dependent initialization when needed. */
6268 GCC_DRIVER_HOST_INITIALIZATION
;
6271 if (atexit (delete_temp_files
) != 0)
6272 fatal_error ("atexit failed");
6274 if (signal (SIGINT
, SIG_IGN
) != SIG_IGN
)
6275 signal (SIGINT
, fatal_signal
);
6277 if (signal (SIGHUP
, SIG_IGN
) != SIG_IGN
)
6278 signal (SIGHUP
, fatal_signal
);
6280 if (signal (SIGTERM
, SIG_IGN
) != SIG_IGN
)
6281 signal (SIGTERM
, fatal_signal
);
6283 if (signal (SIGPIPE
, SIG_IGN
) != SIG_IGN
)
6284 signal (SIGPIPE
, fatal_signal
);
6287 /* We *MUST* set SIGCHLD to SIG_DFL so that the wait4() call will
6288 receive the signal. A different setting is inheritable */
6289 signal (SIGCHLD
, SIG_DFL
);
6292 /* Parsing and gimplification sometimes need quite large stack.
6293 Increase stack size limits if possible. */
6294 stack_limit_increase (64 * 1024 * 1024);
6296 /* Allocate the argument vector. */
6299 obstack_init (&obstack
);
6301 /* Build multilib_select, et. al from the separate lines that make up each
6302 multilib selection. */
6304 const char *const *q
= multilib_raw
;
6307 obstack_init (&multilib_obstack
);
6308 while ((p
= *q
++) != (char *) 0)
6309 obstack_grow (&multilib_obstack
, p
, strlen (p
));
6311 obstack_1grow (&multilib_obstack
, 0);
6312 multilib_select
= XOBFINISH (&multilib_obstack
, const char *);
6314 q
= multilib_matches_raw
;
6315 while ((p
= *q
++) != (char *) 0)
6316 obstack_grow (&multilib_obstack
, p
, strlen (p
));
6318 obstack_1grow (&multilib_obstack
, 0);
6319 multilib_matches
= XOBFINISH (&multilib_obstack
, const char *);
6321 q
= multilib_exclusions_raw
;
6322 while ((p
= *q
++) != (char *) 0)
6323 obstack_grow (&multilib_obstack
, p
, strlen (p
));
6325 obstack_1grow (&multilib_obstack
, 0);
6326 multilib_exclusions
= XOBFINISH (&multilib_obstack
, const char *);
6329 for (i
= 0; i
< ARRAY_SIZE (multilib_defaults_raw
); i
++)
6332 obstack_1grow (&multilib_obstack
, ' ');
6333 obstack_grow (&multilib_obstack
,
6334 multilib_defaults_raw
[i
],
6335 strlen (multilib_defaults_raw
[i
]));
6339 obstack_1grow (&multilib_obstack
, 0);
6340 multilib_defaults
= XOBFINISH (&multilib_obstack
, const char *);
6343 #ifdef INIT_ENVIRONMENT
6344 /* Set up any other necessary machine specific environment variables. */
6345 xputenv (INIT_ENVIRONMENT
);
6348 /* Make a table of what switches there are (switches, n_switches).
6349 Make a table of specified input files (infiles, n_infiles).
6350 Decode switches that are handled locally. */
6352 process_command (decoded_options_count
, decoded_options
);
6354 /* Initialize the vector of specs to just the default.
6355 This means one element containing 0s, as a terminator. */
6357 compilers
= XNEWVAR (struct compiler
, sizeof default_compilers
);
6358 memcpy (compilers
, default_compilers
, sizeof default_compilers
);
6359 n_compilers
= n_default_compilers
;
6361 /* Read specs from a file if there is one. */
6363 machine_suffix
= concat (spec_machine
, dir_separator_str
,
6364 spec_version
, dir_separator_str
, NULL
);
6365 just_machine_suffix
= concat (spec_machine
, dir_separator_str
, NULL
);
6367 specs_file
= find_a_file (&startfile_prefixes
, "specs", R_OK
, true);
6368 /* Read the specs file unless it is a default one. */
6369 if (specs_file
!= 0 && strcmp (specs_file
, "specs"))
6370 read_specs (specs_file
, true, false);
6374 /* We need to check standard_exec_prefix/just_machine_suffix/specs
6375 for any override of as, ld and libraries. */
6376 specs_file
= (char *) alloca (strlen (standard_exec_prefix
)
6377 + strlen (just_machine_suffix
) + sizeof ("specs"));
6379 strcpy (specs_file
, standard_exec_prefix
);
6380 strcat (specs_file
, just_machine_suffix
);
6381 strcat (specs_file
, "specs");
6382 if (access (specs_file
, R_OK
) == 0)
6383 read_specs (specs_file
, true, false);
6385 /* Process any configure-time defaults specified for the command line
6386 options, via OPTION_DEFAULT_SPECS. */
6387 for (i
= 0; i
< ARRAY_SIZE (option_default_specs
); i
++)
6388 do_option_spec (option_default_specs
[i
].name
,
6389 option_default_specs
[i
].spec
);
6391 /* Process DRIVER_SELF_SPECS, adding any new options to the end
6392 of the command line. */
6394 for (i
= 0; i
< ARRAY_SIZE (driver_self_specs
); i
++)
6395 do_self_spec (driver_self_specs
[i
]);
6397 /* If not cross-compiling, look for executables in the standard
6399 if (*cross_compile
== '0')
6401 if (*md_exec_prefix
)
6403 add_prefix (&exec_prefixes
, md_exec_prefix
, "GCC",
6404 PREFIX_PRIORITY_LAST
, 0, 0);
6408 /* Process sysroot_suffix_spec. */
6409 if (*sysroot_suffix_spec
!= 0
6410 && !no_sysroot_suffix
6411 && do_spec_2 (sysroot_suffix_spec
) == 0)
6413 if (argbuf
.length () > 1)
6414 error ("spec failure: more than one arg to SYSROOT_SUFFIX_SPEC");
6415 else if (argbuf
.length () == 1)
6416 target_sysroot_suffix
= xstrdup (argbuf
.last ());
6419 #ifdef HAVE_LD_SYSROOT
6420 /* Pass the --sysroot option to the linker, if it supports that. If
6421 there is a sysroot_suffix_spec, it has already been processed by
6422 this point, so target_system_root really is the system root we
6424 if (target_system_root
)
6426 obstack_grow (&obstack
, "%(sysroot_spec) ", strlen ("%(sysroot_spec) "));
6427 obstack_grow0 (&obstack
, link_spec
, strlen (link_spec
));
6428 set_spec ("link", XOBFINISH (&obstack
, const char *), false);
6432 /* Process sysroot_hdrs_suffix_spec. */
6433 if (*sysroot_hdrs_suffix_spec
!= 0
6434 && !no_sysroot_suffix
6435 && do_spec_2 (sysroot_hdrs_suffix_spec
) == 0)
6437 if (argbuf
.length () > 1)
6438 error ("spec failure: more than one arg to SYSROOT_HEADERS_SUFFIX_SPEC");
6439 else if (argbuf
.length () == 1)
6440 target_sysroot_hdrs_suffix
= xstrdup (argbuf
.last ());
6443 /* Look for startfiles in the standard places. */
6444 if (*startfile_prefix_spec
!= 0
6445 && do_spec_2 (startfile_prefix_spec
) == 0
6446 && do_spec_1 (" ", 0, NULL
) == 0)
6450 FOR_EACH_VEC_ELT (argbuf
, ndx
, arg
)
6451 add_sysrooted_prefix (&startfile_prefixes
, arg
, "BINUTILS",
6452 PREFIX_PRIORITY_LAST
, 0, 1);
6454 /* We should eventually get rid of all these and stick to
6455 startfile_prefix_spec exclusively. */
6456 else if (*cross_compile
== '0' || target_system_root
)
6458 if (*md_startfile_prefix
)
6459 add_sysrooted_prefix (&startfile_prefixes
, md_startfile_prefix
,
6460 "GCC", PREFIX_PRIORITY_LAST
, 0, 1);
6462 if (*md_startfile_prefix_1
)
6463 add_sysrooted_prefix (&startfile_prefixes
, md_startfile_prefix_1
,
6464 "GCC", PREFIX_PRIORITY_LAST
, 0, 1);
6466 /* If standard_startfile_prefix is relative, base it on
6467 standard_exec_prefix. This lets us move the installed tree
6468 as a unit. If GCC_EXEC_PREFIX is defined, base
6469 standard_startfile_prefix on that as well.
6471 If the prefix is relative, only search it for native compilers;
6472 otherwise we will search a directory containing host libraries. */
6473 if (IS_ABSOLUTE_PATH (standard_startfile_prefix
))
6474 add_sysrooted_prefix (&startfile_prefixes
,
6475 standard_startfile_prefix
, "BINUTILS",
6476 PREFIX_PRIORITY_LAST
, 0, 1);
6477 else if (*cross_compile
== '0')
6479 add_prefix (&startfile_prefixes
,
6480 concat (gcc_exec_prefix
6481 ? gcc_exec_prefix
: standard_exec_prefix
,
6483 standard_startfile_prefix
, NULL
),
6484 NULL
, PREFIX_PRIORITY_LAST
, 0, 1);
6487 /* Sysrooted prefixes are relocated because target_system_root is
6488 also relocated by gcc_exec_prefix. */
6489 if (*standard_startfile_prefix_1
)
6490 add_sysrooted_prefix (&startfile_prefixes
,
6491 standard_startfile_prefix_1
, "BINUTILS",
6492 PREFIX_PRIORITY_LAST
, 0, 1);
6493 if (*standard_startfile_prefix_2
)
6494 add_sysrooted_prefix (&startfile_prefixes
,
6495 standard_startfile_prefix_2
, "BINUTILS",
6496 PREFIX_PRIORITY_LAST
, 0, 1);
6499 /* Process any user specified specs in the order given on the command
6501 for (uptr
= user_specs_head
; uptr
; uptr
= uptr
->next
)
6503 char *filename
= find_a_file (&startfile_prefixes
, uptr
->filename
,
6505 read_specs (filename
? filename
: uptr
->filename
, false, true);
6508 /* Process any user self specs. */
6510 struct spec_list
*sl
;
6511 for (sl
= specs
; sl
; sl
= sl
->next
)
6512 if (sl
->name_len
== sizeof "self_spec" - 1
6513 && !strcmp (sl
->name
, "self_spec"))
6514 do_self_spec (*sl
->ptr_spec
);
6519 enum save_temps save
;
6521 if (!compare_debug_second
)
6523 n_switches_debug_check
[1] = n_switches
;
6524 n_switches_alloc_debug_check
[1] = n_switches_alloc
;
6525 switches_debug_check
[1] = XDUPVEC (struct switchstr
, switches
,
6528 do_self_spec ("%:compare-debug-self-opt()");
6529 n_switches_debug_check
[0] = n_switches
;
6530 n_switches_alloc_debug_check
[0] = n_switches_alloc
;
6531 switches_debug_check
[0] = switches
;
6533 n_switches
= n_switches_debug_check
[1];
6534 n_switches_alloc
= n_switches_alloc_debug_check
[1];
6535 switches
= switches_debug_check
[1];
6538 /* Avoid crash when computing %j in this early. */
6539 save
= save_temps_flag
;
6540 save_temps_flag
= SAVE_TEMPS_NONE
;
6542 compare_debug
= -compare_debug
;
6543 do_self_spec ("%:compare-debug-self-opt()");
6545 save_temps_flag
= save
;
6547 if (!compare_debug_second
)
6549 n_switches_debug_check
[1] = n_switches
;
6550 n_switches_alloc_debug_check
[1] = n_switches_alloc
;
6551 switches_debug_check
[1] = switches
;
6552 compare_debug
= -compare_debug
;
6553 n_switches
= n_switches_debug_check
[0];
6554 n_switches_alloc
= n_switches_debug_check
[0];
6555 switches
= switches_debug_check
[0];
6560 /* If we have a GCC_EXEC_PREFIX envvar, modify it for cpp's sake. */
6561 if (gcc_exec_prefix
)
6562 gcc_exec_prefix
= concat (gcc_exec_prefix
, spec_machine
, dir_separator_str
,
6563 spec_version
, dir_separator_str
, NULL
);
6565 /* Now we have the specs.
6566 Set the `valid' bits for switches that match anything in any spec. */
6568 validate_all_switches ();
6570 /* Now that we have the switches and the specs, set
6571 the subdirectory based on the options. */
6572 set_multilib_dir ();
6574 /* Set up to remember the pathname of gcc and any options
6575 needed for collect. We use argv[0] instead of progname because
6576 we need the complete pathname. */
6577 obstack_init (&collect_obstack
);
6578 obstack_grow (&collect_obstack
, "COLLECT_GCC=", sizeof ("COLLECT_GCC=") - 1);
6579 obstack_grow (&collect_obstack
, argv
[0], strlen (argv
[0]) + 1);
6580 xputenv (XOBFINISH (&collect_obstack
, char *));
6582 /* Set up to remember the pathname of the lto wrapper. */
6585 lto_wrapper_file
= NULL
;
6587 lto_wrapper_file
= find_a_file (&exec_prefixes
, "lto-wrapper",
6589 if (lto_wrapper_file
)
6591 lto_wrapper_spec
= lto_wrapper_file
;
6592 obstack_init (&collect_obstack
);
6593 obstack_grow (&collect_obstack
, "COLLECT_LTO_WRAPPER=",
6594 sizeof ("COLLECT_LTO_WRAPPER=") - 1);
6595 obstack_grow (&collect_obstack
, lto_wrapper_spec
,
6596 strlen (lto_wrapper_spec
) + 1);
6597 xputenv (XOBFINISH (&collect_obstack
, char *));
6600 /* Reject switches that no pass was interested in. */
6602 for (i
= 0; (int) i
< n_switches
; i
++)
6603 if (! switches
[i
].validated
)
6604 error ("unrecognized command line option %<-%s%>", switches
[i
].part1
);
6606 /* Obey some of the options. */
6608 if (print_search_dirs
)
6610 printf (_("install: %s%s\n"),
6611 gcc_exec_prefix
? gcc_exec_prefix
: standard_exec_prefix
,
6612 gcc_exec_prefix
? "" : machine_suffix
);
6613 printf (_("programs: %s\n"),
6614 build_search_list (&exec_prefixes
, "", false, false));
6615 printf (_("libraries: %s\n"),
6616 build_search_list (&startfile_prefixes
, "", false, true));
6620 if (print_file_name
)
6622 printf ("%s\n", find_file (print_file_name
));
6626 if (print_prog_name
)
6628 char *newname
= find_a_file (&exec_prefixes
, print_prog_name
, X_OK
, 0);
6629 printf ("%s\n", (newname
? newname
: print_prog_name
));
6633 if (print_multi_lib
)
6635 print_multilib_info ();
6639 if (print_multi_directory
)
6641 if (multilib_dir
== NULL
)
6644 printf ("%s\n", multilib_dir
);
6648 if (print_multiarch
)
6650 if (multiarch_dir
== NULL
)
6653 printf ("%s\n", multiarch_dir
);
6659 if (target_system_root
)
6661 if (target_sysroot_suffix
)
6662 printf ("%s%s\n", target_system_root
, target_sysroot_suffix
);
6664 printf ("%s\n", target_system_root
);
6669 if (print_multi_os_directory
)
6671 if (multilib_os_dir
== NULL
)
6674 printf ("%s\n", multilib_os_dir
);
6678 if (print_sysroot_headers_suffix
)
6680 if (*sysroot_hdrs_suffix_spec
)
6682 printf("%s\n", (target_sysroot_hdrs_suffix
6683 ? target_sysroot_hdrs_suffix
6688 /* The error status indicates that only one set of fixed
6689 headers should be built. */
6690 fatal_error ("not configured with sysroot headers suffix");
6693 if (print_help_list
)
6699 printf (_("\nFor bug reporting instructions, please see:\n"));
6700 printf ("%s.\n", bug_report_url
);
6705 /* We do not exit here. Instead we have created a fake input file
6706 called 'help-dummy' which needs to be compiled, and we pass this
6707 on the various sub-processes, along with the --help switch.
6708 Ensure their output appears after ours. */
6709 fputc ('\n', stdout
);
6715 printf (_("%s %s%s\n"), progname
, pkgversion_string
,
6717 printf ("Copyright %s 2012 Free Software Foundation, Inc.\n",
6719 fputs (_("This is free software; see the source for copying conditions. There is NO\n\
6720 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\n"),
6725 /* We do not exit here. We use the same mechanism of --help to print
6726 the version of the sub-processes. */
6727 fputc ('\n', stdout
);
6736 fnotice (stderr
, "Target: %s\n", spec_machine
);
6737 fnotice (stderr
, "Configured with: %s\n", configuration_arguments
);
6739 #ifdef THREAD_MODEL_SPEC
6740 /* We could have defined THREAD_MODEL_SPEC to "%*" by default,
6741 but there's no point in doing all this processing just to get
6742 thread_model back. */
6743 obstack_init (&obstack
);
6744 do_spec_1 (THREAD_MODEL_SPEC
, 0, thread_model
);
6745 obstack_1grow (&obstack
, '\0');
6746 thrmod
= XOBFINISH (&obstack
, const char *);
6748 thrmod
= thread_model
;
6751 fnotice (stderr
, "Thread model: %s\n", thrmod
);
6753 /* compiler_version is truncated at the first space when initialized
6754 from version string, so truncate version_string at the first space
6755 before comparing. */
6756 for (n
= 0; version_string
[n
]; n
++)
6757 if (version_string
[n
] == ' ')
6760 if (! strncmp (version_string
, compiler_version
, n
)
6761 && compiler_version
[n
] == 0)
6762 fnotice (stderr
, "gcc version %s %s\n", version_string
,
6765 fnotice (stderr
, "gcc driver version %s %sexecuting gcc version %s\n",
6766 version_string
, pkgversion_string
, compiler_version
);
6772 if (n_infiles
== added_libraries
)
6773 fatal_error ("no input files");
6778 /* Make a place to record the compiler output file names
6779 that correspond to the input files. */
6782 i
+= lang_specific_extra_outfiles
;
6783 outfiles
= XCNEWVEC (const char *, i
);
6785 /* Record which files were specified explicitly as link input. */
6787 explicit_link_files
= XCNEWVEC (char, n_infiles
);
6789 combine_inputs
= have_o
|| flag_wpa
;
6791 for (i
= 0; (int) i
< n_infiles
; i
++)
6793 const char *name
= infiles
[i
].name
;
6794 struct compiler
*compiler
= lookup_compiler (name
,
6796 infiles
[i
].language
);
6798 if (compiler
&& !(compiler
->combinable
))
6799 combine_inputs
= false;
6801 if (lang_n_infiles
> 0 && compiler
!= input_file_compiler
6802 && infiles
[i
].language
&& infiles
[i
].language
[0] != '*')
6803 infiles
[i
].incompiler
= compiler
;
6807 input_file_compiler
= compiler
;
6808 infiles
[i
].incompiler
= compiler
;
6812 /* Since there is no compiler for this input file, assume it is a
6814 explicit_link_files
[i
] = 1;
6815 infiles
[i
].incompiler
= NULL
;
6817 infiles
[i
].compiled
= false;
6818 infiles
[i
].preprocessed
= false;
6821 if (!combine_inputs
&& have_c
&& have_o
&& lang_n_infiles
> 1)
6822 fatal_error ("cannot specify -o with -c, -S or -E with multiple files");
6824 for (i
= 0; (int) i
< n_infiles
; i
++)
6826 int this_file_error
= 0;
6828 /* Tell do_spec what to substitute for %i. */
6830 input_file_number
= i
;
6831 set_input (infiles
[i
].name
);
6833 if (infiles
[i
].compiled
)
6836 /* Use the same thing in %o, unless cp->spec says otherwise. */
6838 outfiles
[i
] = gcc_input_filename
;
6840 /* Figure out which compiler from the file's suffix. */
6843 = lookup_compiler (infiles
[i
].name
, input_filename_length
,
6844 infiles
[i
].language
);
6846 if (input_file_compiler
)
6848 /* Ok, we found an applicable compiler. Run its spec. */
6850 if (input_file_compiler
->spec
[0] == '#')
6852 error ("%s: %s compiler not installed on this system",
6853 gcc_input_filename
, &input_file_compiler
->spec
[1]);
6854 this_file_error
= 1;
6860 free (debug_check_temp_file
[0]);
6861 debug_check_temp_file
[0] = NULL
;
6863 free (debug_check_temp_file
[1]);
6864 debug_check_temp_file
[1] = NULL
;
6867 value
= do_spec (input_file_compiler
->spec
);
6868 infiles
[i
].compiled
= true;
6870 this_file_error
= 1;
6871 else if (compare_debug
&& debug_check_temp_file
[0])
6874 inform (0, "recompiling with -fcompare-debug");
6876 compare_debug
= -compare_debug
;
6877 n_switches
= n_switches_debug_check
[1];
6878 n_switches_alloc
= n_switches_alloc_debug_check
[1];
6879 switches
= switches_debug_check
[1];
6881 value
= do_spec (input_file_compiler
->spec
);
6883 compare_debug
= -compare_debug
;
6884 n_switches
= n_switches_debug_check
[0];
6885 n_switches_alloc
= n_switches_alloc_debug_check
[0];
6886 switches
= switches_debug_check
[0];
6890 error ("during -fcompare-debug recompilation");
6891 this_file_error
= 1;
6894 gcc_assert (debug_check_temp_file
[1]
6895 && filename_cmp (debug_check_temp_file
[0],
6896 debug_check_temp_file
[1]));
6899 inform (0, "comparing final insns dumps");
6901 if (compare_files (debug_check_temp_file
))
6902 this_file_error
= 1;
6907 free (debug_check_temp_file
[0]);
6908 debug_check_temp_file
[0] = NULL
;
6910 free (debug_check_temp_file
[1]);
6911 debug_check_temp_file
[1] = NULL
;
6916 /* If this file's name does not contain a recognized suffix,
6917 record it as explicit linker input. */
6920 explicit_link_files
[i
] = 1;
6922 /* Clear the delete-on-failure queue, deleting the files in it
6923 if this compilation failed. */
6925 if (this_file_error
)
6927 delete_failure_queue ();
6930 /* If this compilation succeeded, don't delete those files later. */
6931 clear_failure_queue ();
6934 /* Reset the input file name to the first compile/object file name, for use
6935 with %b in LINK_SPEC. We use the first input file that we can find
6936 a compiler to compile it instead of using infiles.language since for
6937 languages other than C we use aliases that we then lookup later. */
6942 for (i
= 0; i
< n_infiles
; i
++)
6943 if (infiles
[i
].incompiler
6944 || (infiles
[i
].language
&& infiles
[i
].language
[0] != '*'))
6946 set_input (infiles
[i
].name
);
6953 /* Make sure INPUT_FILE_NUMBER points to first available open
6955 input_file_number
= n_infiles
;
6956 if (lang_specific_pre_link ())
6960 /* Determine if there are any linker input files. */
6961 num_linker_inputs
= 0;
6962 for (i
= 0; (int) i
< n_infiles
; i
++)
6963 if (explicit_link_files
[i
] || outfiles
[i
] != NULL
)
6964 num_linker_inputs
++;
6966 /* Run ld to link all the compiler output files. */
6968 if (num_linker_inputs
> 0 && !seen_error () && print_subprocess_help
< 2)
6970 int tmp
= execution_count
;
6974 #if HAVE_LTO_PLUGIN > 0
6975 #if HAVE_LTO_PLUGIN == 2
6976 const char *fno_use_linker_plugin
= "fno-use-linker-plugin";
6978 const char *fuse_linker_plugin
= "fuse-linker-plugin";
6982 /* We'll use ld if we can't find collect2. */
6983 if (! strcmp (linker_name_spec
, "collect2"))
6985 char *s
= find_a_file (&exec_prefixes
, "collect2", X_OK
, false);
6987 linker_name_spec
= "ld";
6990 #if HAVE_LTO_PLUGIN > 0
6991 #if HAVE_LTO_PLUGIN == 2
6992 if (!switch_matches (fno_use_linker_plugin
,
6993 fno_use_linker_plugin
6994 + strlen (fno_use_linker_plugin
), 0))
6996 if (switch_matches (fuse_linker_plugin
,
6998 + strlen (fuse_linker_plugin
), 0))
7001 linker_plugin_file_spec
= find_a_file (&exec_prefixes
,
7002 LTOPLUGINSONAME
, R_OK
,
7004 if (!linker_plugin_file_spec
)
7005 fatal_error ("-fuse-linker-plugin, but %s not found",
7009 lto_gcc_spec
= argv
[0];
7012 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
7014 putenv_from_prefixes (&exec_prefixes
, "COMPILER_PATH", false);
7015 putenv_from_prefixes (&startfile_prefixes
, LIBRARY_PATH_ENV
, true);
7017 if (print_subprocess_help
== 1)
7019 printf (_("\nLinker options\n==============\n\n"));
7020 printf (_("Use \"-Wl,OPTION\" to pass \"OPTION\""
7021 " to the linker.\n\n"));
7024 value
= do_spec (link_command_spec
);
7027 linker_was_run
= (tmp
!= execution_count
);
7030 /* If options said don't run linker,
7031 complain about input files to be given to the linker. */
7033 if (! linker_was_run
&& !seen_error ())
7034 for (i
= 0; (int) i
< n_infiles
; i
++)
7035 if (explicit_link_files
[i
]
7036 && !(infiles
[i
].language
&& infiles
[i
].language
[0] == '*'))
7037 warning (0, "%s: linker input file unused because linking not done",
7040 /* Delete some or all of the temporary files we made. */
7043 delete_failure_queue ();
7044 delete_temp_files ();
7046 if (print_help_list
)
7048 printf (("\nFor bug reporting instructions, please see:\n"));
7049 printf ("%s\n", bug_report_url
);
7053 return (signal_count
!= 0 ? 2
7054 : seen_error () ? (pass_exit_codes
? greatest_status
: 1)
7058 /* Find the proper compilation spec for the file name NAME,
7059 whose length is LENGTH. LANGUAGE is the specified language,
7060 or 0 if this file is to be passed to the linker. */
7062 static struct compiler
*
7063 lookup_compiler (const char *name
, size_t length
, const char *language
)
7065 struct compiler
*cp
;
7067 /* If this was specified by the user to be a linker input, indicate that. */
7068 if (language
!= 0 && language
[0] == '*')
7071 /* Otherwise, look for the language, if one is spec'd. */
7074 for (cp
= compilers
+ n_compilers
- 1; cp
>= compilers
; cp
--)
7075 if (cp
->suffix
[0] == '@' && !strcmp (cp
->suffix
+ 1, language
))
7078 error ("language %s not recognized", language
);
7082 /* Look for a suffix. */
7083 for (cp
= compilers
+ n_compilers
- 1; cp
>= compilers
; cp
--)
7085 if (/* The suffix `-' matches only the file name `-'. */
7086 (!strcmp (cp
->suffix
, "-") && !strcmp (name
, "-"))
7087 || (strlen (cp
->suffix
) < length
7088 /* See if the suffix matches the end of NAME. */
7089 && !strcmp (cp
->suffix
,
7090 name
+ length
- strlen (cp
->suffix
))
7095 #if defined (OS2) ||defined (HAVE_DOS_BASED_FILE_SYSTEM)
7096 /* Look again, but case-insensitively this time. */
7098 for (cp
= compilers
+ n_compilers
- 1; cp
>= compilers
; cp
--)
7100 if (/* The suffix `-' matches only the file name `-'. */
7101 (!strcmp (cp
->suffix
, "-") && !strcmp (name
, "-"))
7102 || (strlen (cp
->suffix
) < length
7103 /* See if the suffix matches the end of NAME. */
7104 && ((!strcmp (cp
->suffix
,
7105 name
+ length
- strlen (cp
->suffix
))
7106 || !strpbrk (cp
->suffix
, "ABCDEFGHIJKLMNOPQRSTUVWXYZ"))
7107 && !strcasecmp (cp
->suffix
,
7108 name
+ length
- strlen (cp
->suffix
)))
7114 if (cp
>= compilers
)
7116 if (cp
->spec
[0] != '@')
7117 /* A non-alias entry: return it. */
7120 /* An alias entry maps a suffix to a language.
7121 Search for the language; pass 0 for NAME and LENGTH
7122 to avoid infinite recursion if language not found. */
7123 return lookup_compiler (NULL
, 0, cp
->spec
+ 1);
7129 save_string (const char *s
, int len
)
7131 char *result
= XNEWVEC (char, len
+ 1);
7133 memcpy (result
, s
, len
);
7139 pfatal_with_name (const char *name
)
7141 perror_with_name (name
);
7142 delete_temp_files ();
7147 perror_with_name (const char *name
)
7149 error ("%s: %m", name
);
7153 validate_switches_from_spec (const char *spec
, bool user
)
7155 const char *p
= spec
;
7158 if (c
== '%' && (*p
== '{' || *p
== '<' || (*p
== 'W' && *++p
== '{')))
7159 /* We have a switch spec. */
7160 p
= validate_switches (p
+ 1, user
);
7164 validate_all_switches (void)
7166 struct compiler
*comp
;
7167 struct spec_list
*spec
;
7169 for (comp
= compilers
; comp
->spec
; comp
++)
7170 validate_switches_from_spec (comp
->spec
, false);
7172 /* Look through the linked list of specs read from the specs file. */
7173 for (spec
= specs
; spec
; spec
= spec
->next
)
7174 validate_switches_from_spec (*spec
->ptr_spec
, spec
->user_p
);
7176 validate_switches_from_spec (link_command_spec
, false);
7179 /* Look at the switch-name that comes after START
7180 and mark as valid all supplied switches that match it. */
7183 validate_switches (const char *start
, bool user_spec
)
7185 const char *p
= start
;
7189 bool suffix
= false;
7190 bool starred
= false;
7192 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
7201 if (*p
== '.' || *p
== ',')
7205 while (ISIDNUM (*p
) || *p
== '-' || *p
== '+' || *p
== '='
7206 || *p
== ',' || *p
== '.' || *p
== '@')
7211 starred
= true, p
++;
7217 /* Mark all matching switches as valid. */
7218 for (i
= 0; i
< n_switches
; i
++)
7219 if (!strncmp (switches
[i
].part1
, atom
, len
)
7220 && (starred
|| switches
[i
].part1
[len
] == '\0')
7221 && (switches
[i
].known
|| user_spec
))
7222 switches
[i
].validated
= true;
7226 if (*p
&& (p
[-1] == '|' || p
[-1] == '&'))
7229 if (*p
&& p
[-1] == ':')
7231 while (*p
&& *p
!= ';' && *p
!= '}')
7236 if (*p
== '{' || *p
== '<')
7237 p
= validate_switches (p
+1, user_spec
);
7238 else if (p
[0] == 'W' && p
[1] == '{')
7239 p
= validate_switches (p
+2, user_spec
);
7246 if (*p
&& p
[-1] == ';')
7260 static struct mdswitchstr
*mdswitches
;
7261 static int n_mdswitches
;
7263 /* Check whether a particular argument was used. The first time we
7264 canonicalize the switches to keep only the ones we care about. */
7267 used_arg (const char *p
, int len
)
7272 const char *replace
;
7277 static struct mswitchstr
*mswitches
;
7278 static int n_mswitches
;
7283 struct mswitchstr
*matches
;
7287 /* Break multilib_matches into the component strings of string
7288 and replacement string. */
7289 for (q
= multilib_matches
; *q
!= '\0'; q
++)
7294 = (struct mswitchstr
*) alloca ((sizeof (struct mswitchstr
)) * cnt
);
7296 q
= multilib_matches
;
7305 fatal_error ("multilib spec %qs is invalid",
7310 matches
[i
].len
= q
- matches
[i
].str
;
7312 matches
[i
].replace
= ++q
;
7313 while (*q
!= ';' && *q
!= '\0')
7316 goto invalid_matches
;
7319 matches
[i
].rep_len
= q
- matches
[i
].replace
;
7325 /* Now build a list of the replacement string for switches that we care
7326 about. Make sure we allocate at least one entry. This prevents
7327 xmalloc from calling fatal, and prevents us from re-executing this
7330 = XNEWVEC (struct mswitchstr
, n_mdswitches
+ (n_switches
? n_switches
: 1));
7331 for (i
= 0; i
< n_switches
; i
++)
7332 if ((switches
[i
].live_cond
& SWITCH_IGNORE
) == 0)
7334 int xlen
= strlen (switches
[i
].part1
);
7335 for (j
= 0; j
< cnt
; j
++)
7336 if (xlen
== matches
[j
].len
7337 && ! strncmp (switches
[i
].part1
, matches
[j
].str
, xlen
))
7339 mswitches
[n_mswitches
].str
= matches
[j
].replace
;
7340 mswitches
[n_mswitches
].len
= matches
[j
].rep_len
;
7341 mswitches
[n_mswitches
].replace
= (char *) 0;
7342 mswitches
[n_mswitches
].rep_len
= 0;
7348 /* Add MULTILIB_DEFAULTS switches too, as long as they were not present
7349 on the command line nor any options mutually incompatible with
7351 for (i
= 0; i
< n_mdswitches
; i
++)
7355 for (q
= multilib_options
; *q
!= '\0'; q
++)
7361 while (strncmp (q
, mdswitches
[i
].str
, mdswitches
[i
].len
) != 0
7362 || strchr (" /", q
[mdswitches
[i
].len
]) == NULL
)
7364 while (*q
!= ' ' && *q
!= '/' && *q
!= '\0')
7371 if (*q
!= ' ' && *q
!= '\0')
7373 while (*r
!= ' ' && *r
!= '\0')
7376 while (*q
!= ' ' && *q
!= '/' && *q
!= '\0')
7379 if (used_arg (r
, q
- r
))
7384 mswitches
[n_mswitches
].str
= mdswitches
[i
].str
;
7385 mswitches
[n_mswitches
].len
= mdswitches
[i
].len
;
7386 mswitches
[n_mswitches
].replace
= (char *) 0;
7387 mswitches
[n_mswitches
].rep_len
= 0;
7400 for (i
= 0; i
< n_mswitches
; i
++)
7401 if (len
== mswitches
[i
].len
&& ! strncmp (p
, mswitches
[i
].str
, len
))
7408 default_arg (const char *p
, int len
)
7412 for (i
= 0; i
< n_mdswitches
; i
++)
7413 if (len
== mdswitches
[i
].len
&& ! strncmp (p
, mdswitches
[i
].str
, len
))
7419 /* Work out the subdirectory to use based on the options. The format of
7420 multilib_select is a list of elements. Each element is a subdirectory
7421 name followed by a list of options followed by a semicolon. The format
7422 of multilib_exclusions is the same, but without the preceding
7423 directory. First gcc will check the exclusions, if none of the options
7424 beginning with an exclamation point are present, and all of the other
7425 options are present, then we will ignore this completely. Passing
7426 that, gcc will consider each multilib_select in turn using the same
7427 rules for matching the options. If a match is found, that subdirectory
7429 A subdirectory name is optionally followed by a colon and the corresponding
7433 set_multilib_dir (void)
7436 unsigned int this_path_len
;
7437 const char *this_path
, *this_arg
;
7438 const char *start
, *end
;
7440 int ok
, ndfltok
, first
;
7443 start
= multilib_defaults
;
7444 while (*start
== ' ' || *start
== '\t')
7446 while (*start
!= '\0')
7449 while (*start
!= ' ' && *start
!= '\t' && *start
!= '\0')
7451 while (*start
== ' ' || *start
== '\t')
7459 mdswitches
= XNEWVEC (struct mdswitchstr
, n_mdswitches
);
7460 for (start
= multilib_defaults
; *start
!= '\0'; start
= end
+ 1)
7462 while (*start
== ' ' || *start
== '\t')
7468 for (end
= start
+ 1;
7469 *end
!= ' ' && *end
!= '\t' && *end
!= '\0'; end
++)
7472 obstack_grow (&multilib_obstack
, start
, end
- start
);
7473 obstack_1grow (&multilib_obstack
, 0);
7474 mdswitches
[i
].str
= XOBFINISH (&multilib_obstack
, const char *);
7475 mdswitches
[i
++].len
= end
- start
;
7482 p
= multilib_exclusions
;
7485 /* Ignore newlines. */
7492 /* Check the arguments. */
7499 fatal_error ("multilib exclusions %qs is invalid",
7500 multilib_exclusions
);
7510 while (*p
!= ' ' && *p
!= ';')
7513 goto invalid_exclusions
;
7517 if (*this_arg
!= '!')
7525 ok
= used_arg (this_arg
, p
- this_arg
);
7540 p
= multilib_select
;
7543 /* Ignore newlines. */
7550 /* Get the initial path. */
7557 fatal_error ("multilib select %qs is invalid",
7562 this_path_len
= p
- this_path
;
7564 /* Check the arguments. */
7571 goto invalid_select
;
7580 while (*p
!= ' ' && *p
!= ';')
7583 goto invalid_select
;
7587 if (*this_arg
!= '!')
7595 /* If this is a default argument, we can just ignore it.
7596 This is true even if this_arg begins with '!'. Beginning
7597 with '!' does not mean that this argument is necessarily
7598 inappropriate for this library: it merely means that
7599 there is a more specific library which uses this
7600 argument. If this argument is a default, we need not
7601 consider that more specific library. */
7602 ok
= used_arg (this_arg
, p
- this_arg
);
7609 if (default_arg (this_arg
, p
- this_arg
))
7618 if (this_path_len
!= 1
7619 || this_path
[0] != '.')
7621 char *new_multilib_dir
= XNEWVEC (char, this_path_len
+ 1);
7624 strncpy (new_multilib_dir
, this_path
, this_path_len
);
7625 new_multilib_dir
[this_path_len
] = '\0';
7626 q
= strchr (new_multilib_dir
, ':');
7629 multilib_dir
= new_multilib_dir
;
7636 const char *q
= this_path
, *end
= this_path
+ this_path_len
;
7638 while (q
< end
&& *q
!= ':')
7642 const char *q2
= q
+ 1, *ml_end
= end
;
7643 char *new_multilib_os_dir
;
7645 while (q2
< end
&& *q2
!= ':')
7649 new_multilib_os_dir
= XNEWVEC (char, ml_end
- q
);
7650 memcpy (new_multilib_os_dir
, q
+ 1, ml_end
- q
- 1);
7651 new_multilib_os_dir
[ml_end
- q
- 1] = '\0';
7652 multilib_os_dir
= *new_multilib_os_dir
? new_multilib_os_dir
: ".";
7654 if (q2
< end
&& *q2
== ':')
7656 char *new_multiarch_dir
= XNEWVEC (char, end
- q2
);
7657 memcpy (new_multiarch_dir
, q2
+ 1, end
- q2
- 1);
7658 new_multiarch_dir
[end
- q2
- 1] = '\0';
7659 multiarch_dir
= new_multiarch_dir
;
7668 if (multilib_dir
== NULL
&& multilib_os_dir
!= NULL
7669 && strcmp (multilib_os_dir
, ".") == 0)
7671 free (CONST_CAST (char *, multilib_os_dir
));
7672 multilib_os_dir
= NULL
;
7674 else if (multilib_dir
!= NULL
&& multilib_os_dir
== NULL
)
7675 multilib_os_dir
= multilib_dir
;
7678 /* Print out the multiple library subdirectory selection
7679 information. This prints out a series of lines. Each line looks
7680 like SUBDIRECTORY;@OPTION@OPTION, with as many options as is
7681 required. Only the desired options are printed out, the negative
7682 matches. The options are print without a leading dash. There are
7683 no spaces to make it easy to use the information in the shell.
7684 Each subdirectory is printed only once. This assumes the ordering
7685 generated by the genmultilib script. Also, we leave out ones that match
7689 print_multilib_info (void)
7691 const char *p
= multilib_select
;
7692 const char *last_path
= 0, *this_path
;
7694 unsigned int last_path_len
= 0;
7699 /* Ignore newlines. */
7706 /* Get the initial path. */
7713 fatal_error ("multilib select %qs is invalid", multilib_select
);
7719 /* When --disable-multilib was used but target defines
7720 MULTILIB_OSDIRNAMES, entries starting with .: (and not starting
7721 with .:: for multiarch configurations) are there just to find
7722 multilib_os_dir, so skip them from output. */
7723 if (this_path
[0] == '.' && this_path
[1] == ':' && this_path
[2] != ':')
7726 /* Check for matches with the multilib_exclusions. We don't bother
7727 with the '!' in either list. If any of the exclusion rules match
7728 all of its options with the select rule, we skip it. */
7730 const char *e
= multilib_exclusions
;
7731 const char *this_arg
;
7736 /* Ignore newlines. */
7743 /* Check the arguments. */
7752 fatal_error ("multilib exclusion %qs is invalid",
7753 multilib_exclusions
);
7764 while (*e
!= ' ' && *e
!= ';')
7767 goto invalid_exclusion
;
7775 int len
= e
- this_arg
;
7778 goto invalid_select
;
7782 while (*q
!= ' ' && *q
!= ';')
7785 goto invalid_select
;
7789 if (! strncmp (arg
, this_arg
,
7790 (len
< q
- arg
) ? q
- arg
: len
)
7791 || default_arg (this_arg
, e
- this_arg
))
7821 /* If this is a duplicate, skip it. */
7822 skip
= (last_path
!= 0
7823 && (unsigned int) (p
- this_path
) == last_path_len
7824 && ! filename_ncmp (last_path
, this_path
, last_path_len
));
7826 last_path
= this_path
;
7827 last_path_len
= p
- this_path
;
7830 /* If this directory requires any default arguments, we can skip
7831 it. We will already have printed a directory identical to
7832 this one which does not require that default argument. */
7843 goto invalid_select
;
7850 while (*q
!= ' ' && *q
!= ';')
7853 goto invalid_select
;
7858 && default_arg (arg
, q
- arg
))
7873 for (p1
= last_path
; p1
< p
&& *p1
!= ':'; p1
++)
7884 goto invalid_select
;
7892 use_arg
= *p
!= '!';
7897 while (*p
!= ' ' && *p
!= ';')
7900 goto invalid_select
;
7912 /* If there are extra options, print them now. */
7913 if (multilib_extra
&& *multilib_extra
)
7915 int print_at
= TRUE
;
7918 for (q
= multilib_extra
; *q
!= '\0'; q
++)
7939 /* getenv built-in spec function.
7941 Returns the value of the environment variable given by its first
7942 argument, concatenated with the second argument. If the
7943 environment variable is not defined, a fatal error is issued. */
7946 getenv_spec_function (int argc
, const char **argv
)
7956 value
= getenv (argv
[0]);
7958 fatal_error ("environment variable %qs not defined", argv
[0]);
7960 /* We have to escape every character of the environment variable so
7961 they are not interpreted as active spec characters. A
7962 particularly painful case is when we are reading a variable
7963 holding a windows path complete with \ separators. */
7964 len
= strlen (value
) * 2 + strlen (argv
[1]) + 1;
7965 result
= XNEWVAR (char, len
);
7966 for (ptr
= result
; *value
; ptr
+= 2)
7972 strcpy (ptr
, argv
[1]);
7977 /* if-exists built-in spec function.
7979 Checks to see if the file specified by the absolute pathname in
7980 ARGS exists. Returns that pathname if found.
7982 The usual use for this function is to check for a library file
7983 (whose name has been expanded with %s). */
7986 if_exists_spec_function (int argc
, const char **argv
)
7988 /* Must have only one argument. */
7989 if (argc
== 1 && IS_ABSOLUTE_PATH (argv
[0]) && ! access (argv
[0], R_OK
))
7995 /* if-exists-else built-in spec function.
7997 This is like if-exists, but takes an additional argument which
7998 is returned if the first argument does not exist. */
8001 if_exists_else_spec_function (int argc
, const char **argv
)
8003 /* Must have exactly two arguments. */
8007 if (IS_ABSOLUTE_PATH (argv
[0]) && ! access (argv
[0], R_OK
))
8013 /* replace-outfile built-in spec function.
8015 This looks for the first argument in the outfiles array's name and
8016 replaces it with the second argument. */
8019 replace_outfile_spec_function (int argc
, const char **argv
)
8022 /* Must have exactly two arguments. */
8026 for (i
= 0; i
< n_infiles
; i
++)
8028 if (outfiles
[i
] && !filename_cmp (outfiles
[i
], argv
[0]))
8029 outfiles
[i
] = xstrdup (argv
[1]);
8034 /* remove-outfile built-in spec function.
8036 * This looks for the first argument in the outfiles array's name and
8040 remove_outfile_spec_function (int argc
, const char **argv
)
8043 /* Must have exactly one argument. */
8047 for (i
= 0; i
< n_infiles
; i
++)
8049 if (outfiles
[i
] && !filename_cmp (outfiles
[i
], argv
[0]))
8055 /* Given two version numbers, compares the two numbers.
8056 A version number must match the regular expression
8057 ([1-9][0-9]*|0)(\.([1-9][0-9]*|0))*
8060 compare_version_strings (const char *v1
, const char *v2
)
8065 if (regcomp (&r
, "^([1-9][0-9]*|0)(\\.([1-9][0-9]*|0))*$",
8066 REG_EXTENDED
| REG_NOSUB
) != 0)
8068 rresult
= regexec (&r
, v1
, 0, NULL
, 0);
8069 if (rresult
== REG_NOMATCH
)
8070 fatal_error ("invalid version number %qs", v1
);
8071 else if (rresult
!= 0)
8073 rresult
= regexec (&r
, v2
, 0, NULL
, 0);
8074 if (rresult
== REG_NOMATCH
)
8075 fatal_error ("invalid version number %qs", v2
);
8076 else if (rresult
!= 0)
8079 return strverscmp (v1
, v2
);
8083 /* version_compare built-in spec function.
8085 This takes an argument of the following form:
8087 <comparison-op> <arg1> [<arg2>] <switch> <result>
8089 and produces "result" if the comparison evaluates to true,
8090 and nothing if it doesn't.
8092 The supported <comparison-op> values are:
8094 >= true if switch is a later (or same) version than arg1
8096 < true if switch is an earlier version than arg1
8098 >< true if switch is arg1 or later, and earlier than arg2
8099 <> true if switch is earlier than arg1 or is arg2 or later
8101 If the switch is not present, the condition is false unless
8102 the first character of the <comparison-op> is '!'.
8105 %:version-compare(>= 10.3 mmacosx-version-min= -lmx)
8106 adds -lmx if -mmacosx-version-min=10.3.9 was passed. */
8109 version_compare_spec_function (int argc
, const char **argv
)
8113 const char *switch_value
= NULL
;
8118 fatal_error ("too few arguments to %%:version-compare");
8119 if (argv
[0][0] == '\0')
8121 if ((argv
[0][1] == '<' || argv
[0][1] == '>') && argv
[0][0] != '!')
8123 if (argc
!= nargs
+ 3)
8124 fatal_error ("too many arguments to %%:version-compare");
8126 switch_len
= strlen (argv
[nargs
+ 1]);
8127 for (i
= 0; i
< n_switches
; i
++)
8128 if (!strncmp (switches
[i
].part1
, argv
[nargs
+ 1], switch_len
)
8129 && check_live_switch (i
, switch_len
))
8130 switch_value
= switches
[i
].part1
+ switch_len
;
8132 if (switch_value
== NULL
)
8136 comp1
= compare_version_strings (switch_value
, argv
[1]);
8138 comp2
= compare_version_strings (switch_value
, argv
[2]);
8140 comp2
= -1; /* This value unused. */
8143 switch (argv
[0][0] << 8 | argv
[0][1])
8145 case '>' << 8 | '=':
8146 result
= comp1
>= 0;
8148 case '!' << 8 | '<':
8149 result
= comp1
>= 0 || switch_value
== NULL
;
8154 case '!' << 8 | '>':
8155 result
= comp1
< 0 || switch_value
== NULL
;
8157 case '>' << 8 | '<':
8158 result
= comp1
>= 0 && comp2
< 0;
8160 case '<' << 8 | '>':
8161 result
= comp1
< 0 || comp2
>= 0;
8165 fatal_error ("unknown operator %qs in %%:version-compare", argv
[0]);
8170 return argv
[nargs
+ 2];
8173 /* %:include builtin spec function. This differs from %include in that it
8174 can be nested inside a spec, and thus be conditionalized. It takes
8175 one argument, the filename, and looks for it in the startfile path.
8176 The result is always NULL, i.e. an empty expansion. */
8179 include_spec_function (int argc
, const char **argv
)
8186 file
= find_a_file (&startfile_prefixes
, argv
[0], R_OK
, true);
8187 read_specs (file
? file
: argv
[0], false, false);
8192 /* %:find-file spec function. This function replaces its argument by
8193 the file found through find_file, that is the -print-file-name gcc
8196 find_file_spec_function (int argc
, const char **argv
)
8203 file
= find_file (argv
[0]);
8208 /* %:find-plugindir spec function. This function replaces its argument
8209 by the -iplugindir=<dir> option. `dir' is found through find_file, that
8210 is the -print-file-name gcc program option. */
8212 find_plugindir_spec_function (int argc
, const char **argv ATTRIBUTE_UNUSED
)
8219 option
= concat ("-iplugindir=", find_file ("plugin"), NULL
);
8224 /* %:print-asm-header spec function. Print a banner to say that the
8225 following output is from the assembler. */
8228 print_asm_header_spec_function (int arg ATTRIBUTE_UNUSED
,
8229 const char **argv ATTRIBUTE_UNUSED
)
8231 printf (_("Assembler options\n=================\n\n"));
8232 printf (_("Use \"-Wa,OPTION\" to pass \"OPTION\" to the assembler.\n\n"));
8237 /* Get a random number for -frandom-seed */
8239 static unsigned HOST_WIDE_INT
8240 get_random_number (void)
8242 unsigned HOST_WIDE_INT ret
= 0;
8245 fd
= open ("/dev/urandom", O_RDONLY
);
8248 read (fd
, &ret
, sizeof (HOST_WIDE_INT
));
8254 /* Get some more or less random data. */
8255 #ifdef HAVE_GETTIMEOFDAY
8259 gettimeofday (&tv
, NULL
);
8260 ret
= tv
.tv_sec
* 1000 + tv
.tv_usec
/ 1000;
8264 time_t now
= time (NULL
);
8266 if (now
!= (time_t)-1)
8267 ret
= (unsigned) now
;
8271 return ret
^ getpid();
8274 /* %:compare-debug-dump-opt spec function. Save the last argument,
8275 expected to be the last -fdump-final-insns option, or generate a
8279 compare_debug_dump_opt_spec_function (int arg
,
8280 const char **argv ATTRIBUTE_UNUSED
)
8285 static char random_seed
[HOST_BITS_PER_WIDE_INT
/ 4 + 3];
8288 fatal_error ("too many arguments to %%:compare-debug-dump-opt");
8290 do_spec_2 ("%{fdump-final-insns=*:%*}");
8291 do_spec_1 (" ", 0, NULL
);
8293 if (argbuf
.length () > 0
8294 && strcmp (argv
[argbuf
.length () - 1], "."))
8299 name
= xstrdup (argv
[argbuf
.length () - 1]);
8304 const char *ext
= NULL
;
8306 if (argbuf
.length () > 0)
8308 do_spec_2 ("%{o*:%*}%{!o:%{!S:%b%O}%{S:%b.s}}");
8311 else if (!compare_debug
)
8314 do_spec_2 ("%g.gkd");
8316 do_spec_1 (" ", 0, NULL
);
8318 gcc_assert (argbuf
.length () > 0);
8320 name
= concat (argbuf
.last (), ext
, NULL
);
8322 ret
= concat ("-fdump-final-insns=", name
, NULL
);
8325 which
= compare_debug
< 0;
8326 debug_check_temp_file
[which
] = name
;
8330 unsigned HOST_WIDE_INT value
= get_random_number ();
8332 sprintf (random_seed
, HOST_WIDE_INT_PRINT_HEX
, value
);
8338 ret
= concat ("%{!frandom-seed=*:-frandom-seed=", random_seed
, "} ",
8349 static const char *debug_auxbase_opt
;
8351 /* %:compare-debug-self-opt spec function. Expands to the options
8352 that are to be passed in the second compilation of
8356 compare_debug_self_opt_spec_function (int arg
,
8357 const char **argv ATTRIBUTE_UNUSED
)
8360 fatal_error ("too many arguments to %%:compare-debug-self-opt");
8362 if (compare_debug
>= 0)
8365 do_spec_2 ("%{c|S:%{o*:%*}}");
8366 do_spec_1 (" ", 0, NULL
);
8368 if (argbuf
.length () > 0)
8369 debug_auxbase_opt
= concat ("-auxbase-strip ",
8373 debug_auxbase_opt
= NULL
;
8376 %<o %<MD %<MMD %<MF* %<MG %<MP %<MQ* %<MT* \
8377 %<fdump-final-insns=* -w -S -o %j \
8378 %{!fcompare-debug-second:-fcompare-debug-second} \
8379 ", compare_debug_opt
, NULL
);
8382 /* %:compare-debug-auxbase-opt spec function. Expands to the auxbase
8383 options that are to be passed in the second compilation of
8384 compare-debug. It expects, as an argument, the basename of the
8385 current input file name, with the .gk suffix appended to it. */
8388 compare_debug_auxbase_opt_spec_function (int arg
,
8395 fatal_error ("too few arguments to %%:compare-debug-auxbase-opt");
8398 fatal_error ("too many arguments to %%:compare-debug-auxbase-opt");
8400 if (compare_debug
>= 0)
8403 len
= strlen (argv
[0]);
8404 if (len
< 3 || strcmp (argv
[0] + len
- 3, ".gk") != 0)
8405 fatal_error ("argument to %%:compare-debug-auxbase-opt "
8406 "does not end in .gk");
8408 if (debug_auxbase_opt
)
8409 return debug_auxbase_opt
;
8411 #define OPT "-auxbase "
8414 name
= (char*) xmalloc (sizeof (OPT
) + len
);
8415 memcpy (name
, OPT
, sizeof (OPT
) - 1);
8416 memcpy (name
+ sizeof (OPT
) - 1, argv
[0], len
);
8417 name
[sizeof (OPT
) - 1 + len
] = '\0';
8424 /* %:pass-through-libs spec function. Finds all -l options and input
8425 file names in the lib spec passed to it, and makes a list of them
8426 prepended with the plugin option to cause them to be passed through
8427 to the final link after all the new object files have been added. */
8430 pass_through_libs_spec_func (int argc
, const char **argv
)
8432 char *prepended
= xstrdup (" ");
8434 /* Shlemiel the painter's algorithm. Innately horrible, but at least
8435 we know that there will never be more than a handful of strings to
8436 concat, and it's only once per run, so it's not worth optimising. */
8437 for (n
= 0; n
< argc
; n
++)
8439 char *old
= prepended
;
8440 /* Anything that isn't an option is a full path to an output
8441 file; pass it through if it ends in '.a'. Among options,
8443 if (argv
[n
][0] == '-' && argv
[n
][1] == 'l')
8445 const char *lopt
= argv
[n
] + 2;
8446 /* Handle both joined and non-joined -l options. If for any
8447 reason there's a trailing -l with no joined or following
8448 arg just discard it. */
8449 if (!*lopt
&& ++n
>= argc
)
8453 prepended
= concat (prepended
, "-plugin-opt=-pass-through=-l",
8456 else if (!strcmp (".a", argv
[n
] + strlen (argv
[n
]) - 2))
8458 prepended
= concat (prepended
, "-plugin-opt=-pass-through=",
8459 argv
[n
], " ", NULL
);
8461 if (prepended
!= old
)
8467 /* %:replace-extension spec function. Replaces the extension of the
8468 first argument with the second argument. */
8471 replace_extension_spec_func (int argc
, const char **argv
)
8479 fatal_error ("too few arguments to %%:replace-extension");
8481 name
= xstrdup (argv
[0]);
8483 for (i
= strlen(name
) - 1; i
>= 0; i
--)
8484 if (IS_DIR_SEPARATOR (name
[i
]))
8487 p
= strrchr (name
+ i
+ 1, '.');
8491 result
= concat (name
, argv
[1], NULL
);