1 /* Compiler driver program that can handle many languages.
2 Copyright (C) 1987-2014 Free Software Foundation, Inc.
4 This file is part of GCC.
6 GCC is free software; you can redistribute it and/or modify it under
7 the terms of the GNU General Public License as published by the Free
8 Software Foundation; either version 3, or (at your option) any later
11 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
12 WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
16 You should have received a copy of the GNU General Public License
17 along with GCC; see the file COPYING3. If not see
18 <http://www.gnu.org/licenses/>. */
20 /* This program is the user interface to the C compiler and possibly to
21 other compilers. It is used because compilation is a complicated procedure
22 which involves running several programs and passing temporary files between
23 them, forwarding the users switches to those programs selectively,
24 and deleting the temporary files at the end.
26 CC recognizes how to compile each input file by suffixes in the file names.
27 Once it knows which kind of compilation to perform, the procedure for
28 compilation is specified by a string called a "spec". */
32 #include "coretypes.h"
33 #include "multilib.h" /* before tm.h */
40 #include "diagnostic.h"
45 #include "filenames.h"
47 /* By default there is no special suffix for target executables. */
48 /* FIXME: when autoconf is fixed, remove the host check - dj */
49 #if defined(TARGET_EXECUTABLE_SUFFIX) && defined(HOST_EXECUTABLE_SUFFIX)
50 #define HAVE_TARGET_EXECUTABLE_SUFFIX
53 /* By default there is no special suffix for host executables. */
54 #ifdef HOST_EXECUTABLE_SUFFIX
55 #define HAVE_HOST_EXECUTABLE_SUFFIX
57 #define HOST_EXECUTABLE_SUFFIX ""
60 /* By default, the suffix for target object files is ".o". */
61 #ifdef TARGET_OBJECT_SUFFIX
62 #define HAVE_TARGET_OBJECT_SUFFIX
64 #define TARGET_OBJECT_SUFFIX ".o"
67 static const char dir_separator_str
[] = { DIR_SEPARATOR
, 0 };
69 /* Most every one is fine with LIBRARY_PATH. For some, it conflicts. */
70 #ifndef LIBRARY_PATH_ENV
71 #define LIBRARY_PATH_ENV "LIBRARY_PATH"
74 /* If a stage of compilation returns an exit status >= 1,
75 compilation of that file ceases. */
77 #define MIN_FATAL_STATUS 1
79 /* Flag set by cppspec.c to 1. */
82 /* Flag set to nonzero if an @file argument has been supplied to gcc. */
83 static bool at_file_supplied
;
85 /* Definition of string containing the arguments given to configure. */
86 #include "configargs.h"
88 /* Flag saying to print the command line options understood by gcc and its
91 static int print_help_list
;
93 /* Flag saying to print the version of gcc and its sub-processes. */
95 static int print_version
;
97 /* Flag indicating whether we should ONLY print the command and
98 arguments (like verbose_flag) without executing the command.
99 Displayed arguments are quoted so that the generated command
100 line is suitable for execution. This is intended for use in
101 shell scripts to capture the driver-generated command line. */
102 static int verbose_only_flag
;
104 /* Flag indicating how to print command line options of sub-processes. */
106 static int print_subprocess_help
;
108 /* Linker suffix passed to -fuse-ld=... */
109 static const char *use_ld
;
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
;
160 static const char *spec_host_machine
= DEFAULT_REAL_TARGET_MACHINE
;
162 /* Nonzero if cross-compiling.
163 When -b is used, the value comes from the `specs' file. */
165 #ifdef CROSS_DIRECTORY_STRUCTURE
166 static const char *cross_compile
= "1";
168 static const char *cross_compile
= "0";
171 /* Greatest exit code of sub-processes that has been encountered up to
173 static int greatest_status
= 1;
175 /* This is the obstack which we use to allocate many strings. */
177 static struct obstack obstack
;
179 /* This is the obstack to build an environment variable to pass to
180 collect2 that describes all of the relevant switches of what to
181 pass the compiler in building the list of pointers to constructors
184 static struct obstack collect_obstack
;
186 /* Forward declaration for prototypes. */
190 static void init_spec (void);
191 static void store_arg (const char *, int, int);
192 static void insert_wrapper (const char *);
193 static char *load_specs (const char *);
194 static void read_specs (const char *, bool, bool);
195 static void set_spec (const char *, const char *, bool);
196 static struct compiler
*lookup_compiler (const char *, size_t, const char *);
197 static char *build_search_list (const struct path_prefix
*, const char *,
199 static void xputenv (const char *);
200 static void putenv_from_prefixes (const struct path_prefix
*, const char *,
202 static int access_check (const char *, int);
203 static char *find_a_file (const struct path_prefix
*, const char *, int, bool);
204 static void add_prefix (struct path_prefix
*, const char *, const char *,
206 static void add_sysrooted_prefix (struct path_prefix
*, const char *,
207 const char *, int, int, int);
208 static char *skip_whitespace (char *);
209 static void delete_if_ordinary (const char *);
210 static void delete_temp_files (void);
211 static void delete_failure_queue (void);
212 static void clear_failure_queue (void);
213 static int check_live_switch (int, int);
214 static const char *handle_braces (const char *);
215 static inline bool input_suffix_matches (const char *, const char *);
216 static inline bool switch_matches (const char *, const char *, int);
217 static inline void mark_matching_switches (const char *, const char *, int);
218 static inline void process_marked_switches (void);
219 static const char *process_brace_body (const char *, const char *, const char *, int, int);
220 static const struct spec_function
*lookup_spec_function (const char *);
221 static const char *eval_spec_function (const char *, const char *);
222 static const char *handle_spec_function (const char *, bool *);
223 static char *save_string (const char *, int);
224 static void set_collect_gcc_options (void);
225 static int do_spec_1 (const char *, int, const char *);
226 static int do_spec_2 (const char *);
227 static void do_option_spec (const char *, const char *);
228 static void do_self_spec (const char *);
229 static const char *find_file (const char *);
230 static int is_directory (const char *, bool);
231 static const char *validate_switches (const char *, bool);
232 static void validate_all_switches (void);
233 static inline void validate_switches_from_spec (const char *, bool);
234 static void give_switch (int, int);
235 static int used_arg (const char *, int);
236 static int default_arg (const char *, int);
237 static void set_multilib_dir (void);
238 static void print_multilib_info (void);
239 static void perror_with_name (const char *);
240 static void display_help (void);
241 static void add_preprocessor_option (const char *, int);
242 static void add_assembler_option (const char *, int);
243 static void add_linker_option (const char *, int);
244 static void process_command (unsigned int, struct cl_decoded_option
*);
245 static int execute (void);
246 static void alloc_args (void);
247 static void clear_args (void);
248 static void fatal_signal (int);
249 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
250 static void init_gcc_specs (struct obstack
*, const char *, const char *,
253 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
254 static const char *convert_filename (const char *, int, int);
257 static const char *getenv_spec_function (int, const char **);
258 static const char *if_exists_spec_function (int, const char **);
259 static const char *if_exists_else_spec_function (int, const char **);
260 static const char *sanitize_spec_function (int, const char **);
261 static const char *replace_outfile_spec_function (int, const char **);
262 static const char *remove_outfile_spec_function (int, const char **);
263 static const char *version_compare_spec_function (int, const char **);
264 static const char *include_spec_function (int, const char **);
265 static const char *find_file_spec_function (int, const char **);
266 static const char *find_plugindir_spec_function (int, const char **);
267 static const char *print_asm_header_spec_function (int, const char **);
268 static const char *compare_debug_dump_opt_spec_function (int, const char **);
269 static const char *compare_debug_self_opt_spec_function (int, const char **);
270 static const char *compare_debug_auxbase_opt_spec_function (int, const char **);
271 static const char *pass_through_libs_spec_func (int, const char **);
272 static const char *replace_extension_spec_func (int, const char **);
273 static char *convert_white_space (char *);
275 /* The Specs Language
277 Specs are strings containing lines, each of which (if not blank)
278 is made up of a program name, and arguments separated by spaces.
279 The program name must be exact and start from root, since no path
280 is searched and it is unreliable to depend on the current working directory.
281 Redirection of input or output is not supported; the subprograms must
282 accept filenames saying what files to read and write.
284 In addition, the specs can contain %-sequences to substitute variable text
285 or for conditional text. Here is a table of all defined %-sequences.
286 Note that spaces are not generated automatically around the results of
287 expanding these sequences; therefore, you can concatenate them together
288 or with constant text in a single argument.
290 %% substitute one % into the program name or argument.
291 %i substitute the name of the input file being processed.
292 %b substitute the basename of the input file being processed.
293 This is the substring up to (and not including) the last period
294 and not including the directory unless -save-temps was specified
295 to put temporaries in a different location.
296 %B same as %b, but include the file suffix (text after the last period).
298 substitute a file name that has suffix SUFFIX and is chosen
299 once per compilation, and mark the argument a la %d. To reduce
300 exposure to denial-of-service attacks, the file name is now
301 chosen in a way that is hard to predict even when previously
302 chosen file names are known. For example, `%g.s ... %g.o ... %g.s'
303 might turn into `ccUVUUAU.s ccXYAXZ12.o ccUVUUAU.s'. SUFFIX matches
304 the regexp "[.0-9A-Za-z]*%O"; "%O" is treated exactly as if it
305 had been pre-processed. Previously, %g was simply substituted
306 with a file name chosen once per compilation, without regard
307 to any appended suffix (which was therefore treated just like
308 ordinary text), making such attacks more likely to succeed.
310 like %g, but if -pipe is in effect, expands simply to "-".
312 like %g, but if -pipe is in effect, expands to nothing. (We have both
313 %| and %m to accommodate differences between system assemblers; see
314 the AS_NEEDS_DASH_FOR_PIPED_INPUT target macro.)
316 like %g, but generates a new temporary file name even if %uSUFFIX
319 substitutes the last file name generated with %uSUFFIX, generating a
320 new one if there is no such last file name. In the absence of any
321 %uSUFFIX, this is just like %gSUFFIX, except they don't share
322 the same suffix "space", so `%g.s ... %U.s ... %g.s ... %U.s'
323 would involve the generation of two distinct file names, one
324 for each `%g.s' and another for each `%U.s'. Previously, %U was
325 simply substituted with a file name chosen for the previous %u,
326 without regard to any appended suffix.
328 substitutes the name of the HOST_BIT_BUCKET, if any, and if it is
329 writable, and if save-temps is off; otherwise, substitute the name
330 of a temporary file, just like %u. This temporary file is not
331 meant for communication between processes, but rather as a junk
334 substitutes .SUFFIX for the suffixes of a matched switch's args when
335 it is subsequently output with %*. SUFFIX is terminated by the next
337 %d marks the argument containing or following the %d as a
338 temporary file name, so that that file will be deleted if GCC exits
339 successfully. Unlike %g, this contributes no text to the argument.
340 %w marks the argument containing or following the %w as the
341 "output file" of this compilation. This puts the argument
342 into the sequence of arguments that %o will substitute later.
343 %V indicates that this compilation produces no "output file".
345 like %{...} but mark last argument supplied within
346 as a file to be deleted on failure.
347 %o substitutes the names of all the output files, with spaces
348 automatically placed around them. You should write spaces
349 around the %o as well or the results are undefined.
350 %o is for use in the specs for running the linker.
351 Input files whose names have no recognized suffix are not compiled
352 at all, but they are included among the output files, so they will
354 %O substitutes the suffix for object files. Note that this is
355 handled specially when it immediately follows %g, %u, or %U
356 (with or without a suffix argument) because of the need for
357 those to form complete file names. The handling is such that
358 %O is treated exactly as if it had already been substituted,
359 except that %g, %u, and %U do not currently support additional
360 SUFFIX characters following %O as they would following, for
362 %I Substitute any of -iprefix (made from GCC_EXEC_PREFIX), -isysroot
363 (made from TARGET_SYSTEM_ROOT), -isystem (made from COMPILER_PATH
364 and -B options) and -imultilib as necessary.
365 %s current argument is the name of a library or startup file of some sort.
366 Search for that file in a standard list of directories
367 and substitute the full name found.
368 %eSTR Print STR as an error message. STR is terminated by a newline.
369 Use this when inconsistent options are detected.
370 %nSTR Print STR as a notice. STR is terminated by a newline.
371 %x{OPTION} Accumulate an option for %X.
372 %X Output the accumulated linker options specified by compilations.
373 %Y Output the accumulated assembler options specified by compilations.
374 %Z Output the accumulated preprocessor options specified by compilations.
375 %a process ASM_SPEC as a spec.
376 This allows config.h to specify part of the spec for running as.
377 %A process ASM_FINAL_SPEC as a spec. A capital A is actually
378 used here. This can be used to run a post-processor after the
379 assembler has done its job.
380 %D Dump out a -L option for each directory in startfile_prefixes.
381 If multilib_dir is set, extra entries are generated with it affixed.
382 %l process LINK_SPEC as a spec.
383 %L process LIB_SPEC as a spec.
384 %M Output multilib_os_dir.
385 %G process LIBGCC_SPEC as a spec.
386 %R Output the concatenation of target_system_root and
387 target_sysroot_suffix.
388 %S process STARTFILE_SPEC as a spec. A capital S is actually used here.
389 %E process ENDFILE_SPEC as a spec. A capital E is actually used here.
390 %C process CPP_SPEC as a spec.
391 %1 process CC1_SPEC as a spec.
392 %2 process CC1PLUS_SPEC as a spec.
393 %* substitute the variable part of a matched option. (See below.)
394 Note that each comma in the substituted string is replaced by
395 a single space. A space is appended after the last substition
396 unless there is more text in current sequence.
397 %<S remove all occurrences of -S from the command line.
398 Note - this command is position dependent. % commands in the
399 spec string before this one will see -S, % commands in the
400 spec string after this one will not.
401 %>S Similar to "%<S", but keep it in the GCC command line.
402 %<S* remove all occurrences of all switches beginning with -S from the
405 Call the named function FUNCTION, passing it ARGS. ARGS is
406 first processed as a nested spec string, then split into an
407 argument vector in the usual fashion. The function returns
408 a string which is processed as if it had appeared literally
409 as part of the current spec.
410 %{S} substitutes the -S switch, if that switch was given to GCC.
411 If that switch was not specified, this substitutes nothing.
412 Here S is a metasyntactic variable.
413 %{S*} substitutes all the switches specified to GCC whose names start
414 with -S. This is used for -o, -I, etc; switches that take
415 arguments. GCC considers `-o foo' as being one switch whose
416 name starts with `o'. %{o*} would substitute this text,
417 including the space; thus, two arguments would be generated.
418 %{S*&T*} likewise, but preserve order of S and T options (the order
419 of S and T in the spec is not significant). Can be any number
420 of ampersand-separated variables; for each the wild card is
421 optional. Useful for CPP as %{D*&U*&A*}.
423 %{S:X} substitutes X, if the -S switch was given to GCC.
424 %{!S:X} substitutes X, if the -S switch was NOT given to GCC.
425 %{S*:X} substitutes X if one or more switches whose names start
426 with -S was given to GCC. Normally X is substituted only
427 once, no matter how many such switches appeared. However,
428 if %* appears somewhere in X, then X will be substituted
429 once for each matching switch, with the %* replaced by the
430 part of that switch that matched the '*'. A space will be
431 appended after the last substition unless there is more
432 text in current sequence.
433 %{.S:X} substitutes X, if processing a file with suffix S.
434 %{!.S:X} substitutes X, if NOT processing a file with suffix S.
435 %{,S:X} substitutes X, if processing a file which will use spec S.
436 %{!,S:X} substitutes X, if NOT processing a file which will use spec S.
438 %{S|T:X} substitutes X if either -S or -T was given to GCC. This may be
439 combined with '!', '.', ',', and '*' as above binding stronger
441 If %* appears in X, all of the alternatives must be starred, and
442 only the first matching alternative is substituted.
443 %{%:function(args):X}
444 Call function named FUNCTION with args ARGS. If the function
445 returns non-NULL, then X is substituted, if it returns
446 NULL, it isn't substituted.
447 %{S:X; if S was given to GCC, substitutes X;
448 T:Y; else if T was given to GCC, substitutes Y;
449 :D} else substitutes D. There can be as many clauses as you need.
450 This may be combined with '.', '!', ',', '|', and '*' as above.
452 %(Spec) processes a specification defined in a specs file as *Spec:
454 The conditional text X in a %{S:X} or similar construct may contain
455 other nested % constructs or spaces, or even newlines. They are
456 processed as usual, as described above. Trailing white space in X is
457 ignored. White space may also appear anywhere on the left side of the
458 colon in these constructs, except between . or * and the corresponding
461 The -O, -f, -g, -m, and -W switches are handled specifically in these
462 constructs. If another value of -O or the negated form of a -f, -m, or
463 -W switch is found later in the command line, the earlier switch
464 value is ignored, except with {S*} where S is just one letter; this
465 passes all matching options.
467 The character | at the beginning of the predicate text is used to indicate
468 that a command should be piped to the following command, but only if -pipe
471 Note that it is built into GCC which switches take arguments and which
472 do not. You might think it would be useful to generalize this to
473 allow each compiler's spec to say which switches take arguments. But
474 this cannot be done in a consistent fashion. GCC cannot even decide
475 which input files have been specified without knowing which switches
476 take arguments, and it must know which input files to compile in order
477 to tell which compilers to run.
479 GCC also knows implicitly that arguments starting in `-l' are to be
480 treated as compiler output files, and passed to the linker in their
481 proper position among the other output files. */
483 /* Define the macros used for specs %a, %l, %L, %S, %C, %1. */
485 /* config.h can define ASM_SPEC to provide extra args to the assembler
486 or extra switch-translations. */
491 /* config.h can define ASM_FINAL_SPEC to run a post processor after
492 the assembler has run. */
493 #ifndef ASM_FINAL_SPEC
494 #define ASM_FINAL_SPEC \
496 objcopy --extract-dwo \
497 %{c:%{o*:%*}%{!o*:%b%O}}%{!c:%U%O} \
498 %{c:%{o*:%:replace-extension(%{o*:%*} .dwo)}%{!o*:%b.dwo}}%{!c:%b.dwo} \n\
499 objcopy --strip-dwo \
500 %{c:%{o*:%*}%{!o*:%b%O}}%{!c:%U%O} \
504 /* config.h can define CPP_SPEC to provide extra args to the C preprocessor
505 or extra switch-translations. */
510 /* config.h can define CC1_SPEC to provide extra args to cc1 and cc1plus
511 or extra switch-translations. */
516 /* config.h can define CC1PLUS_SPEC to provide extra args to cc1plus
517 or extra switch-translations. */
519 #define CC1PLUS_SPEC ""
522 /* config.h can define LINK_SPEC to provide extra args to the linker
523 or extra switch-translations. */
528 /* config.h can define LIB_SPEC to override the default libraries. */
530 #define LIB_SPEC "%{!shared:%{g*:-lg} %{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p}}"
533 /* When using -fsplit-stack we need to wrap pthread_create, in order
534 to initialize the stack guard. We always use wrapping, rather than
535 shared library ordering, and we keep the wrapper function in
536 libgcc. This is not yet a real spec, though it could become one;
537 it is currently just stuffed into LINK_SPEC. FIXME: This wrapping
538 only works with GNU ld and gold. */
539 #define STACK_SPLIT_SPEC " %{fsplit-stack: --wrap=pthread_create}"
542 #define STATIC_LIBASAN_LIBS \
543 " %{static-libasan:%:include(libsanitizer.spec)%(link_libasan)}"
544 #ifdef LIBASAN_EARLY_SPEC
545 #define LIBASAN_SPEC STATIC_LIBASAN_LIBS
546 #elif defined(HAVE_LD_STATIC_DYNAMIC)
547 #define LIBASAN_SPEC "%{static-libasan:" LD_STATIC_OPTION \
548 "} -lasan %{static-libasan:" LD_DYNAMIC_OPTION "}" \
551 #define LIBASAN_SPEC "-lasan" STATIC_LIBASAN_LIBS
555 #ifndef LIBASAN_EARLY_SPEC
556 #define LIBASAN_EARLY_SPEC ""
560 #define STATIC_LIBTSAN_LIBS \
561 " %{static-libtsan:%:include(libsanitizer.spec)%(link_libtsan)}"
562 #ifdef LIBTSAN_EARLY_SPEC
563 #define LIBTSAN_SPEC STATIC_LIBTSAN_LIBS
564 #elif defined(HAVE_LD_STATIC_DYNAMIC)
565 #define LIBTSAN_SPEC "%{static-libtsan:" LD_STATIC_OPTION \
566 "} -ltsan %{static-libtsan:" LD_DYNAMIC_OPTION "}" \
569 #define LIBTSAN_SPEC "-ltsan" STATIC_LIBTSAN_LIBS
573 #ifndef LIBTSAN_EARLY_SPEC
574 #define LIBTSAN_EARLY_SPEC ""
578 #define STATIC_LIBLSAN_LIBS \
579 " %{static-liblsan:%:include(libsanitizer.spec)%(link_liblsan)}"
580 #ifdef LIBLSAN_EARLY_SPEC
581 #define LIBLSAN_SPEC STATIC_LIBLSAN_LIBS
582 #elif defined(HAVE_LD_STATIC_DYNAMIC)
583 #define LIBLSAN_SPEC "%{static-liblsan:" LD_STATIC_OPTION \
584 "} -llsan %{static-liblsan:" LD_DYNAMIC_OPTION "}" \
587 #define LIBLSAN_SPEC "-llsan" STATIC_LIBLSAN_LIBS
591 #ifndef LIBLSAN_EARLY_SPEC
592 #define LIBLSAN_EARLY_SPEC ""
595 #ifndef LIBUBSAN_SPEC
596 #define STATIC_LIBUBSAN_LIBS \
597 " %{static-libubsan:%:include(libsanitizer.spec)%(link_libubsan)}"
598 #ifdef HAVE_LD_STATIC_DYNAMIC
599 #define LIBUBSAN_SPEC "%{static-libubsan:" LD_STATIC_OPTION \
600 "} -lubsan %{static-libubsan:" LD_DYNAMIC_OPTION "}" \
603 #define LIBUBSAN_SPEC "-lubsan" STATIC_LIBUBSAN_LIBS
607 /* Linker options for compressed debug sections. */
608 #if HAVE_LD_COMPRESS_DEBUG == 0
609 /* No linker support. */
610 #define LINK_COMPRESS_DEBUG_SPEC \
611 " %{gz*:%e-gz is not supported in this configuration} "
612 #elif HAVE_LD_COMPRESS_DEBUG == 1
613 /* GNU style on input, GNU ld options. Reject, not useful. */
614 #define LINK_COMPRESS_DEBUG_SPEC \
615 " %{gz*:%e-gz is not supported in this configuration} "
616 #elif HAVE_LD_COMPRESS_DEBUG == 2
617 /* GNU style, GNU gold options. */
618 #define LINK_COMPRESS_DEBUG_SPEC \
619 " %{gz|gz=zlib-gnu:" LD_COMPRESS_DEBUG_OPTION "=zlib}" \
620 " %{gz=none:" LD_COMPRESS_DEBUG_OPTION "=none}" \
621 " %{gz=zlib:%e-gz=zlib is not supported in this configuration} "
622 #elif HAVE_LD_COMPRESS_DEBUG == 3
623 /* ELF gABI style. */
624 #define LINK_COMPRESS_DEBUG_SPEC \
625 " %{gz|gz=zlib:" LD_COMPRESS_DEBUG_OPTION "=zlib}" \
626 " %{gz=none:" LD_COMPRESS_DEBUG_OPTION "=none}" \
627 " %{gz=zlib-gnu:" LD_COMPRESS_DEBUG_OPTION "=zlib-gnu} "
629 #error Unknown value for HAVE_LD_COMPRESS_DEBUG.
632 /* config.h can define LIBGCC_SPEC to override how and when libgcc.a is
635 #if defined(REAL_LIBGCC_SPEC)
636 #define LIBGCC_SPEC REAL_LIBGCC_SPEC
637 #elif defined(LINK_LIBGCC_SPECIAL_1)
638 /* Have gcc do the search for libgcc.a. */
639 #define LIBGCC_SPEC "libgcc.a%s"
641 #define LIBGCC_SPEC "-lgcc"
645 /* config.h can define STARTFILE_SPEC to override the default crt0 files. */
646 #ifndef STARTFILE_SPEC
647 #define STARTFILE_SPEC \
648 "%{!shared:%{pg:gcrt0%O%s}%{!pg:%{p:mcrt0%O%s}%{!p:crt0%O%s}}}"
651 /* config.h can define ENDFILE_SPEC to override the default crtn files. */
653 #define ENDFILE_SPEC ""
657 #define LINKER_NAME "collect2"
660 #ifdef HAVE_AS_DEBUG_PREFIX_MAP
661 #define ASM_MAP " %{fdebug-prefix-map=*:--debug-prefix-map %*}"
666 /* Assembler options for compressed debug sections. */
667 #if HAVE_LD_COMPRESS_DEBUG < 2
668 /* Reject if the linker cannot write compressed debug sections. */
669 #define ASM_COMPRESS_DEBUG_SPEC \
670 " %{gz*:%e-gz is not supported in this configuration} "
671 #else /* HAVE_LD_COMPRESS_DEBUG >= 2 */
672 #if HAVE_AS_COMPRESS_DEBUG == 0
673 /* No assembler support. Ignore silently. */
674 #define ASM_COMPRESS_DEBUG_SPEC \
676 #elif HAVE_AS_COMPRESS_DEBUG == 1
677 /* GNU style, GNU as options. */
678 #define ASM_COMPRESS_DEBUG_SPEC \
679 " %{gz|gz=zlib-gnu:" AS_COMPRESS_DEBUG_OPTION "}" \
680 " %{gz=none:" AS_NO_COMPRESS_DEBUG_OPTION "}" \
681 " %{gz=zlib:%e-gz=zlib is not supported in this configuration} "
682 #elif HAVE_AS_COMPRESS_DEBUG == 2
683 /* ELF gABI style. */
684 #define ASM_COMPRESS_DEBUG_SPEC \
685 " %{gz|gz=zlib:" AS_COMPRESS_DEBUG_OPTION "=zlib}" \
686 " %{gz=none:" AS_COMPRESS_DEBUG_OPTION "=none}" \
687 " %{gz=zlib-gnu:" AS_COMPRESS_DEBUG_OPTION "=zlib-gnu} "
689 #error Unknown value for HAVE_AS_COMPRESS_DEBUG.
691 #endif /* HAVE_LD_COMPRESS_DEBUG >= 2 */
693 /* Define ASM_DEBUG_SPEC to be a spec suitable for translating '-g'
695 #ifndef ASM_DEBUG_SPEC
696 # if defined(DBX_DEBUGGING_INFO) && defined(DWARF2_DEBUGGING_INFO) \
697 && defined(HAVE_AS_GDWARF2_DEBUG_FLAG) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
698 # define ASM_DEBUG_SPEC \
699 (PREFERRED_DEBUGGING_TYPE == DBX_DEBUG \
700 ? "%{!g0:%{gdwarf*:--gdwarf2}%{!gdwarf*:%{g*:--gstabs}}}" ASM_MAP \
701 : "%{!g0:%{gstabs*:--gstabs}%{!gstabs*:%{g*:--gdwarf2}}}" ASM_MAP)
703 # if defined(DBX_DEBUGGING_INFO) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
704 # define ASM_DEBUG_SPEC "%{g*:%{!g0:--gstabs}}" ASM_MAP
706 # if defined(DWARF2_DEBUGGING_INFO) && defined(HAVE_AS_GDWARF2_DEBUG_FLAG)
707 # define ASM_DEBUG_SPEC "%{g*:%{!g0:--gdwarf2}}" ASM_MAP
711 #ifndef ASM_DEBUG_SPEC
712 # define ASM_DEBUG_SPEC ""
715 /* Here is the spec for running the linker, after compiling all files. */
717 /* This is overridable by the target in case they need to specify the
718 -lgcc and -lc order specially, yet not require them to override all
719 of LINK_COMMAND_SPEC. */
720 #ifndef LINK_GCC_C_SEQUENCE_SPEC
721 #define LINK_GCC_C_SEQUENCE_SPEC "%G %L %G"
724 #ifndef LINK_SSP_SPEC
725 #ifdef TARGET_LIBC_PROVIDES_SSP
726 #define LINK_SSP_SPEC "%{fstack-protector:}"
728 #define LINK_SSP_SPEC "%{fstack-protector|fstack-protector-strong|fstack-protector-all:-lssp_nonshared -lssp}"
732 #ifndef LINK_PIE_SPEC
734 #define LINK_PIE_SPEC "%{pie:-pie} "
736 #define LINK_PIE_SPEC "%{pie:} "
740 #ifndef LINK_BUILDID_SPEC
741 # if defined(HAVE_LD_BUILDID) && defined(ENABLE_LD_BUILDID)
742 # define LINK_BUILDID_SPEC "%{!r:--build-id} "
746 /* Conditional to test whether the LTO plugin is used or not.
747 FIXME: For slim LTO we will need to enable plugin unconditionally. This
748 still cause problems with PLUGIN_LD != LD and when plugin is built but
749 not useable. For GCC 4.6 we don't support slim LTO and thus we can enable
750 plugin only when LTO is enabled. We still honor explicit
751 -fuse-linker-plugin if the linker used understands -plugin. */
753 /* The linker has some plugin support. */
754 #if HAVE_LTO_PLUGIN > 0
755 /* The linker used has full plugin support, use LTO plugin by default. */
756 #if HAVE_LTO_PLUGIN == 2
757 #define PLUGIN_COND "!fno-use-linker-plugin:%{!fno-lto"
758 #define PLUGIN_COND_CLOSE "}"
760 /* The linker used has limited plugin support, use LTO plugin with explicit
761 -fuse-linker-plugin. */
762 #define PLUGIN_COND "fuse-linker-plugin"
763 #define PLUGIN_COND_CLOSE ""
765 #define LINK_PLUGIN_SPEC \
767 -plugin %(linker_plugin_file) \
768 -plugin-opt=%(lto_wrapper) \
769 -plugin-opt=-fresolution=%u.res \
770 %{!nostdlib:%{!nodefaultlibs:%:pass-through-libs(%(link_gcc_c_sequence))}} \
773 /* The linker used doesn't support -plugin, reject -fuse-linker-plugin. */
774 #define LINK_PLUGIN_SPEC "%{fuse-linker-plugin:\
775 %e-fuse-linker-plugin is not supported in this configuration}"
778 /* Linker command line options for -fsanitize= early on the command line. */
779 #ifndef SANITIZER_EARLY_SPEC
780 #define SANITIZER_EARLY_SPEC "\
781 %{!nostdlib:%{!nodefaultlibs:%{%:sanitize(address):" LIBASAN_EARLY_SPEC "} \
782 %{%:sanitize(thread):" LIBTSAN_EARLY_SPEC "} \
783 %{%:sanitize(leak):" LIBLSAN_EARLY_SPEC "}}}"
786 /* Linker command line options for -fsanitize= late on the command line. */
787 #ifndef SANITIZER_SPEC
788 #define SANITIZER_SPEC "\
789 %{!nostdlib:%{!nodefaultlibs:%{%:sanitize(address):" LIBASAN_SPEC "\
790 %{static:%ecannot specify -static with -fsanitize=address}}\
791 %{%:sanitize(thread):" LIBTSAN_SPEC "\
792 %{!pie:%{!shared:%e-fsanitize=thread linking must be done with -pie or -shared}}}\
793 %{%:sanitize(undefined):" LIBUBSAN_SPEC "}\
794 %{%:sanitize(leak):" LIBLSAN_SPEC "}}}"
797 /* This is the spec to use, once the code for creating the vtable
798 verification runtime library, libvtv.so, has been created. Currently
799 the vtable verification runtime functions are in libstdc++, so we use
800 the spec just below this one. */
801 #ifndef VTABLE_VERIFICATION_SPEC
802 #define VTABLE_VERIFICATION_SPEC "\
803 %{!nostdlib:%{fvtable-verify=std: -lvtv -u_vtable_map_vars_start -u_vtable_map_vars_end}\
804 %{fvtable-verify=preinit: -lvtv -u_vtable_map_vars_start -u_vtable_map_vars_end}}"
807 /* -u* was put back because both BSD and SysV seem to support it. */
808 /* %{static:} simply prevents an error message if the target machine
809 doesn't handle -static. */
810 /* We want %{T*} after %{L*} and %D so that it can be used to specify linker
811 scripts which exist in user specified directories, or in standard
813 /* We pass any -flto flags on to the linker, which is expected
814 to understand them. In practice, this means it had better be collect2. */
815 /* %{e*} includes -export-dynamic; see comment in common.opt. */
816 #ifndef LINK_COMMAND_SPEC
817 #define LINK_COMMAND_SPEC "\
818 %{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:\
821 "%{flto|flto=*:%<fcompare-debug*} \
822 %{flto} %{flto=*} %l " LINK_PIE_SPEC \
823 "%{fuse-ld=*:-fuse-ld=%*} " LINK_COMPRESS_DEBUG_SPEC \
824 "%X %{o*} %{e*} %{N} %{n} %{r}\
825 %{s} %{t} %{u*} %{z} %{Z} %{!nostdlib:%{!nostartfiles:%S}} " VTABLE_VERIFICATION_SPEC " \
826 %{static:} %{L*} %(mfwrap) %(link_libgcc) " SANITIZER_EARLY_SPEC " %o\
827 %{fopenacc|fopenmp|ftree-parallelize-loops=*:%:include(libgomp.spec)%(link_gomp)}\
828 %{fcilkplus:%:include(libcilkrts.spec)%(link_cilkrts)}\
829 %{fgnu-tm:%:include(libitm.spec)%(link_itm)}\
830 %(mflib) " STACK_SPLIT_SPEC "\
831 %{fprofile-arcs|fprofile-generate*|coverage:-lgcov} " SANITIZER_SPEC " \
832 %{!nostdlib:%{!nodefaultlibs:%(link_ssp) %(link_gcc_c_sequence)}}\
833 %{!nostdlib:%{!nostartfiles:%E}} %{T*} }}}}}}"
836 #ifndef LINK_LIBGCC_SPEC
837 /* Generate -L options for startfile prefix list. */
838 # define LINK_LIBGCC_SPEC "%D"
841 #ifndef STARTFILE_PREFIX_SPEC
842 # define STARTFILE_PREFIX_SPEC ""
846 # define SYSROOT_SPEC "--sysroot=%R"
849 #ifndef SYSROOT_SUFFIX_SPEC
850 # define SYSROOT_SUFFIX_SPEC ""
853 #ifndef SYSROOT_HEADERS_SUFFIX_SPEC
854 # define SYSROOT_HEADERS_SUFFIX_SPEC ""
857 static const char *asm_debug
= ASM_DEBUG_SPEC
;
858 static const char *cpp_spec
= CPP_SPEC
;
859 static const char *cc1_spec
= CC1_SPEC
;
860 static const char *cc1plus_spec
= CC1PLUS_SPEC
;
861 static const char *link_gcc_c_sequence_spec
= LINK_GCC_C_SEQUENCE_SPEC
;
862 static const char *link_ssp_spec
= LINK_SSP_SPEC
;
863 static const char *asm_spec
= ASM_SPEC
;
864 static const char *asm_final_spec
= ASM_FINAL_SPEC
;
865 static const char *link_spec
= LINK_SPEC
;
866 static const char *lib_spec
= LIB_SPEC
;
867 static const char *link_gomp_spec
= "";
868 static const char *libgcc_spec
= LIBGCC_SPEC
;
869 static const char *endfile_spec
= ENDFILE_SPEC
;
870 static const char *startfile_spec
= STARTFILE_SPEC
;
871 static const char *linker_name_spec
= LINKER_NAME
;
872 static const char *linker_plugin_file_spec
= "";
873 static const char *lto_wrapper_spec
= "";
874 static const char *lto_gcc_spec
= "";
875 static const char *link_command_spec
= LINK_COMMAND_SPEC
;
876 static const char *link_libgcc_spec
= LINK_LIBGCC_SPEC
;
877 static const char *startfile_prefix_spec
= STARTFILE_PREFIX_SPEC
;
878 static const char *sysroot_spec
= SYSROOT_SPEC
;
879 static const char *sysroot_suffix_spec
= SYSROOT_SUFFIX_SPEC
;
880 static const char *sysroot_hdrs_suffix_spec
= SYSROOT_HEADERS_SUFFIX_SPEC
;
881 static const char *self_spec
= "";
883 /* Standard options to cpp, cc1, and as, to reduce duplication in specs.
884 There should be no need to override these in target dependent files,
885 but we need to copy them to the specs file so that newer versions
886 of the GCC driver can correctly drive older tool chains with the
887 appropriate -B options. */
889 /* When cpplib handles traditional preprocessing, get rid of this, and
890 call cc1 (or cc1obj in objc/lang-specs.h) from the main specs so
891 that we default the front end language better. */
892 static const char *trad_capable_cpp
=
893 "cc1 -E %{traditional|traditional-cpp:-traditional-cpp}";
895 /* We don't wrap .d files in %W{} since a missing .d file, and
896 therefore no dependency entry, confuses make into thinking a .o
897 file that happens to exist is up-to-date. */
898 static const char *cpp_unique_options
=
899 "%{!Q:-quiet} %{nostdinc*} %{C} %{CC} %{v} %{I*&F*} %{P} %I\
900 %{MD:-MD %{!o:%b.d}%{o*:%.d%*}}\
901 %{MMD:-MMD %{!o:%b.d}%{o*:%.d%*}}\
902 %{M} %{MM} %{MF*} %{MG} %{MP} %{MQ*} %{MT*}\
903 %{!E:%{!M:%{!MM:%{!MT:%{!MQ:%{MD|MMD:%{o*:-MQ %*}}}}}}}\
904 %{remap} %{g3|ggdb3|gstabs3|gcoff3|gxcoff3|gvms3:-dD}\
905 %{!iplugindir*:%{fplugin*:%:find-plugindir()}}\
906 %{H} %C %{D*&U*&A*} %{i*} %Z %i\
909 /* This contains cpp options which are common with cc1_options and are passed
910 only when preprocessing only to avoid duplication. We pass the cc1 spec
911 options to the preprocessor so that it the cc1 spec may manipulate
912 options used to set target flags. Those special target flags settings may
913 in turn cause preprocessor symbols to be defined specially. */
914 static const char *cpp_options
=
915 "%(cpp_unique_options) %1 %{m*} %{std*&ansi&trigraphs} %{W*&pedantic*} %{w}\
916 %{f*} %{g*:%{!g0:%{g*} %{!fno-working-directory:-fworking-directory}}} %{O*}\
917 %{undef} %{save-temps*:-fpch-preprocess}";
919 /* This contains cpp options which are not passed when the preprocessor
920 output will be used by another program. */
921 static const char *cpp_debug_options
= "%{d*}";
923 /* NB: This is shared amongst all front-ends, except for Ada. */
924 static const char *cc1_options
=
925 "%{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\
926 %{!iplugindir*:%{fplugin*:%:find-plugindir()}}\
927 %1 %{!Q:-quiet} %{!dumpbase:-dumpbase %B} %{d*} %{m*} %{aux-info*}\
928 %{fcompare-debug-second:%:compare-debug-auxbase-opt(%b)} \
929 %{!fcompare-debug-second:%{c|S:%{o*:-auxbase-strip %*}%{!o*:-auxbase %b}}}%{!c:%{!S:-auxbase %b}} \
930 %{g*} %{O*} %{W*&pedantic*} %{w} %{std*&ansi&trigraphs}\
931 %{v:-version} %{pg:-p} %{p} %{f*} %{undef}\
932 %{Qn:-fno-ident} %{Qy:} %{-help:--help}\
933 %{-target-help:--target-help}\
934 %{-version:--version}\
935 %{-help=*:--help=%*}\
936 %{!fsyntax-only:%{S:%W{o*}%{!o*:-o %b.s}}}\
937 %{fsyntax-only:-o %j} %{-param*}\
938 %{coverage:-fprofile-arcs -ftest-coverage}";
940 static const char *asm_options
=
941 "%{-target-help:%:print-asm-header()} "
943 /* If GNU AS is used, then convert -w (no warnings), -I, and -v
944 to the assembler equivalents. */
945 "%{v} %{w:-W} %{I*} "
947 ASM_COMPRESS_DEBUG_SPEC
948 "%a %Y %{c:%W{o*}%{!o*:-o %w%b%O}}%{!c:-o %d%w%u%O}";
950 static const char *invoke_as
=
951 #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT
953 %{fcompare-debug=*|fdump-final-insns=*:%:compare-debug-dump-opt()}\
954 %{!S:-o %|.s |\n as %(asm_options) %|.s %A }\
958 %{fcompare-debug=*|fdump-final-insns=*:%:compare-debug-dump-opt()}\
959 %{!S:-o %|.s |\n as %(asm_options) %m.s %A }\
963 /* Some compilers have limits on line lengths, and the multilib_select
964 and/or multilib_matches strings can be very long, so we build them at
966 static struct obstack multilib_obstack
;
967 static const char *multilib_select
;
968 static const char *multilib_matches
;
969 static const char *multilib_defaults
;
970 static const char *multilib_exclusions
;
971 static const char *multilib_reuse
;
973 /* Check whether a particular argument is a default argument. */
975 #ifndef MULTILIB_DEFAULTS
976 #define MULTILIB_DEFAULTS { "" }
979 static const char *const multilib_defaults_raw
[] = MULTILIB_DEFAULTS
;
981 #ifndef DRIVER_SELF_SPECS
982 #define DRIVER_SELF_SPECS ""
985 /* Linking to libgomp implies pthreads. This is particularly important
986 for targets that use different start files and suchlike. */
987 #ifndef GOMP_SELF_SPECS
988 #define GOMP_SELF_SPECS "%{fopenacc|fopenmp|ftree-parallelize-loops=*: " \
992 /* Likewise for -fgnu-tm. */
993 #ifndef GTM_SELF_SPECS
994 #define GTM_SELF_SPECS "%{fgnu-tm: -pthread}"
997 /* Likewise for -fcilkplus. */
998 #ifndef CILK_SELF_SPECS
999 #define CILK_SELF_SPECS "%{fcilkplus: -pthread}"
1002 static const char *const driver_self_specs
[] = {
1003 "%{fdump-final-insns:-fdump-final-insns=.} %<fdump-final-insns",
1004 DRIVER_SELF_SPECS
, CONFIGURE_SPECS
, GOMP_SELF_SPECS
, GTM_SELF_SPECS
,
1008 #ifndef OPTION_DEFAULT_SPECS
1009 #define OPTION_DEFAULT_SPECS { "", "" }
1018 static const struct default_spec
1019 option_default_specs
[] = { OPTION_DEFAULT_SPECS
};
1023 struct user_specs
*next
;
1024 const char *filename
;
1027 static struct user_specs
*user_specs_head
, *user_specs_tail
;
1030 /* Record the mapping from file suffixes for compilation specs. */
1034 const char *suffix
; /* Use this compiler for input files
1035 whose names end in this suffix. */
1037 const char *spec
; /* To use this compiler, run this spec. */
1039 const char *cpp_spec
; /* If non-NULL, substitute this spec
1040 for `%C', rather than the usual
1042 const int combinable
; /* If nonzero, compiler can deal with
1043 multiple source files at once (IMA). */
1044 const int needs_preprocessing
; /* If nonzero, source files need to
1045 be run through a preprocessor. */
1048 /* Pointer to a vector of `struct compiler' that gives the spec for
1049 compiling a file, based on its suffix.
1050 A file that does not end in any of these suffixes will be passed
1051 unchanged to the loader and nothing else will be done to it.
1053 An entry containing two 0s is used to terminate the vector.
1055 If multiple entries match a file, the last matching one is used. */
1057 static struct compiler
*compilers
;
1059 /* Number of entries in `compilers', not counting the null terminator. */
1061 static int n_compilers
;
1063 /* The default list of file name suffixes and their compilation specs. */
1065 static const struct compiler default_compilers
[] =
1067 /* Add lists of suffixes of known languages here. If those languages
1068 were not present when we built the driver, we will hit these copies
1069 and be given a more meaningful error than "file not used since
1070 linking is not done". */
1071 {".m", "#Objective-C", 0, 0, 0}, {".mi", "#Objective-C", 0, 0, 0},
1072 {".mm", "#Objective-C++", 0, 0, 0}, {".M", "#Objective-C++", 0, 0, 0},
1073 {".mii", "#Objective-C++", 0, 0, 0},
1074 {".cc", "#C++", 0, 0, 0}, {".cxx", "#C++", 0, 0, 0},
1075 {".cpp", "#C++", 0, 0, 0}, {".cp", "#C++", 0, 0, 0},
1076 {".c++", "#C++", 0, 0, 0}, {".C", "#C++", 0, 0, 0},
1077 {".CPP", "#C++", 0, 0, 0}, {".ii", "#C++", 0, 0, 0},
1078 {".ads", "#Ada", 0, 0, 0}, {".adb", "#Ada", 0, 0, 0},
1079 {".f", "#Fortran", 0, 0, 0}, {".F", "#Fortran", 0, 0, 0},
1080 {".for", "#Fortran", 0, 0, 0}, {".FOR", "#Fortran", 0, 0, 0},
1081 {".ftn", "#Fortran", 0, 0, 0}, {".FTN", "#Fortran", 0, 0, 0},
1082 {".fpp", "#Fortran", 0, 0, 0}, {".FPP", "#Fortran", 0, 0, 0},
1083 {".f90", "#Fortran", 0, 0, 0}, {".F90", "#Fortran", 0, 0, 0},
1084 {".f95", "#Fortran", 0, 0, 0}, {".F95", "#Fortran", 0, 0, 0},
1085 {".f03", "#Fortran", 0, 0, 0}, {".F03", "#Fortran", 0, 0, 0},
1086 {".f08", "#Fortran", 0, 0, 0}, {".F08", "#Fortran", 0, 0, 0},
1087 {".r", "#Ratfor", 0, 0, 0},
1088 {".p", "#Pascal", 0, 0, 0}, {".pas", "#Pascal", 0, 0, 0},
1089 {".java", "#Java", 0, 0, 0}, {".class", "#Java", 0, 0, 0},
1090 {".zip", "#Java", 0, 0, 0}, {".jar", "#Java", 0, 0, 0},
1091 {".go", "#Go", 0, 1, 0},
1092 /* Next come the entries for C. */
1093 {".c", "@c", 0, 0, 1},
1095 /* cc1 has an integrated ISO C preprocessor. We should invoke the
1096 external preprocessor if -save-temps is given. */
1097 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\
1100 %eGNU C no longer supports -traditional without -E}\
1101 %{save-temps*|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
1102 %(cpp_options) -o %{save-temps*:%b.i} %{!save-temps*:%g.i} \n\
1103 cc1 -fpreprocessed %{save-temps*:%b.i} %{!save-temps*:%g.i} \
1105 %{!save-temps*:%{!traditional-cpp:%{!no-integrated-cpp:\
1106 cc1 %(cpp_unique_options) %(cc1_options)}}}\
1107 %{!fsyntax-only:%(invoke_as)}}}}", 0, 0, 1},
1109 "%{!E:%e-E or -x required when input is from standard input}\
1110 %(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)", 0, 0, 0},
1111 {".h", "@c-header", 0, 0, 0},
1113 /* cc1 has an integrated ISO C preprocessor. We should invoke the
1114 external preprocessor if -save-temps is given. */
1115 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\
1117 %{save-temps*|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
1118 %(cpp_options) -o %{save-temps*:%b.i} %{!save-temps*:%g.i} \n\
1119 cc1 -fpreprocessed %{save-temps*:%b.i} %{!save-temps*:%g.i} \
1121 %{!fdump-ada-spec*:-o %g.s %{!o*:--output-pch=%i.gch}\
1122 %W{o*:--output-pch=%*}}%V}\
1123 %{!save-temps*:%{!traditional-cpp:%{!no-integrated-cpp:\
1124 cc1 %(cpp_unique_options) %(cc1_options)\
1125 %{!fdump-ada-spec*:-o %g.s %{!o*:--output-pch=%i.gch}\
1126 %W{o*:--output-pch=%*}}%V}}}}}}", 0, 0, 0},
1127 {".i", "@cpp-output", 0, 0, 0},
1129 "%{!M:%{!MM:%{!E:cc1 -fpreprocessed %i %(cc1_options) %{!fsyntax-only:%(invoke_as)}}}}", 0, 0, 0},
1130 {".s", "@assembler", 0, 0, 0},
1132 "%{!M:%{!MM:%{!E:%{!S:as %(asm_debug) %(asm_options) %i %A }}}}", 0, 0, 0},
1133 {".sx", "@assembler-with-cpp", 0, 0, 0},
1134 {".S", "@assembler-with-cpp", 0, 0, 0},
1135 {"@assembler-with-cpp",
1136 #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT
1137 "%(trad_capable_cpp) -lang-asm %(cpp_options) -fno-directives-only\
1138 %{E|M|MM:%(cpp_debug_options)}\
1139 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\
1140 as %(asm_debug) %(asm_options) %|.s %A }}}}"
1142 "%(trad_capable_cpp) -lang-asm %(cpp_options) -fno-directives-only\
1143 %{E|M|MM:%(cpp_debug_options)}\
1144 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\
1145 as %(asm_debug) %(asm_options) %m.s %A }}}}"
1150 /* Mark end of table. */
1154 /* Number of elements in default_compilers, not counting the terminator. */
1156 static const int n_default_compilers
= ARRAY_SIZE (default_compilers
) - 1;
1158 typedef char *char_p
; /* For DEF_VEC_P. */
1160 /* A vector of options to give to the linker.
1161 These options are accumulated by %x,
1162 and substituted into the linker command with %X. */
1163 static vec
<char_p
> linker_options
;
1165 /* A vector of options to give to the assembler.
1166 These options are accumulated by -Wa,
1167 and substituted into the assembler command with %Y. */
1168 static vec
<char_p
> assembler_options
;
1170 /* A vector of options to give to the preprocessor.
1171 These options are accumulated by -Wp,
1172 and substituted into the preprocessor command with %Z. */
1173 static vec
<char_p
> preprocessor_options
;
1176 skip_whitespace (char *p
)
1180 /* A fully-blank line is a delimiter in the SPEC file and shouldn't
1181 be considered whitespace. */
1182 if (p
[0] == '\n' && p
[1] == '\n' && p
[2] == '\n')
1184 else if (*p
== '\n' || *p
== ' ' || *p
== '\t')
1198 /* Structures to keep track of prefixes to try when looking for files. */
1202 const char *prefix
; /* String to prepend to the path. */
1203 struct prefix_list
*next
; /* Next in linked list. */
1204 int require_machine_suffix
; /* Don't use without machine_suffix. */
1205 /* 2 means try both machine_suffix and just_machine_suffix. */
1206 int priority
; /* Sort key - priority within list. */
1207 int os_multilib
; /* 1 if OS multilib scheme should be used,
1208 0 for GCC multilib scheme. */
1213 struct prefix_list
*plist
; /* List of prefixes to try */
1214 int max_len
; /* Max length of a prefix in PLIST */
1215 const char *name
; /* Name of this list (used in config stuff) */
1218 /* List of prefixes to try when looking for executables. */
1220 static struct path_prefix exec_prefixes
= { 0, 0, "exec" };
1222 /* List of prefixes to try when looking for startup (crt0) files. */
1224 static struct path_prefix startfile_prefixes
= { 0, 0, "startfile" };
1226 /* List of prefixes to try when looking for include files. */
1228 static struct path_prefix include_prefixes
= { 0, 0, "include" };
1230 /* Suffix to attach to directories searched for commands.
1231 This looks like `MACHINE/VERSION/'. */
1233 static const char *machine_suffix
= 0;
1235 /* Suffix to attach to directories searched for commands.
1236 This is just `MACHINE/'. */
1238 static const char *just_machine_suffix
= 0;
1240 /* Adjusted value of GCC_EXEC_PREFIX envvar. */
1242 static const char *gcc_exec_prefix
;
1244 /* Adjusted value of standard_libexec_prefix. */
1246 static const char *gcc_libexec_prefix
;
1248 /* Default prefixes to attach to command names. */
1250 #ifndef STANDARD_STARTFILE_PREFIX_1
1251 #define STANDARD_STARTFILE_PREFIX_1 "/lib/"
1253 #ifndef STANDARD_STARTFILE_PREFIX_2
1254 #define STANDARD_STARTFILE_PREFIX_2 "/usr/lib/"
1257 #ifdef CROSS_DIRECTORY_STRUCTURE /* Don't use these prefixes for a cross compiler. */
1258 #undef MD_EXEC_PREFIX
1259 #undef MD_STARTFILE_PREFIX
1260 #undef MD_STARTFILE_PREFIX_1
1263 /* If no prefixes defined, use the null string, which will disable them. */
1264 #ifndef MD_EXEC_PREFIX
1265 #define MD_EXEC_PREFIX ""
1267 #ifndef MD_STARTFILE_PREFIX
1268 #define MD_STARTFILE_PREFIX ""
1270 #ifndef MD_STARTFILE_PREFIX_1
1271 #define MD_STARTFILE_PREFIX_1 ""
1274 /* These directories are locations set at configure-time based on the
1275 --prefix option provided to configure. Their initializers are
1276 defined in Makefile.in. These paths are not *directly* used when
1277 gcc_exec_prefix is set because, in that case, we know where the
1278 compiler has been installed, and use paths relative to that
1279 location instead. */
1280 static const char *const standard_exec_prefix
= STANDARD_EXEC_PREFIX
;
1281 static const char *const standard_libexec_prefix
= STANDARD_LIBEXEC_PREFIX
;
1282 static const char *const standard_bindir_prefix
= STANDARD_BINDIR_PREFIX
;
1283 static const char *const standard_startfile_prefix
= STANDARD_STARTFILE_PREFIX
;
1285 /* For native compilers, these are well-known paths containing
1286 components that may be provided by the system. For cross
1287 compilers, these paths are not used. */
1288 static const char *md_exec_prefix
= MD_EXEC_PREFIX
;
1289 static const char *md_startfile_prefix
= MD_STARTFILE_PREFIX
;
1290 static const char *md_startfile_prefix_1
= MD_STARTFILE_PREFIX_1
;
1291 static const char *const standard_startfile_prefix_1
1292 = STANDARD_STARTFILE_PREFIX_1
;
1293 static const char *const standard_startfile_prefix_2
1294 = STANDARD_STARTFILE_PREFIX_2
;
1296 /* A relative path to be used in finding the location of tools
1297 relative to the driver. */
1298 static const char *const tooldir_base_prefix
= TOOLDIR_BASE_PREFIX
;
1300 /* A prefix to be used when this is an accelerator compiler. */
1301 static const char *const accel_dir_suffix
= ACCEL_DIR_SUFFIX
;
1303 /* Subdirectory to use for locating libraries. Set by
1304 set_multilib_dir based on the compilation options. */
1306 static const char *multilib_dir
;
1308 /* Subdirectory to use for locating libraries in OS conventions. Set by
1309 set_multilib_dir based on the compilation options. */
1311 static const char *multilib_os_dir
;
1313 /* Subdirectory to use for locating libraries in multiarch conventions. Set by
1314 set_multilib_dir based on the compilation options. */
1316 static const char *multiarch_dir
;
1318 /* Structure to keep track of the specs that have been defined so far.
1319 These are accessed using %(specname) in a compiler or link
1324 /* The following 2 fields must be first */
1325 /* to allow EXTRA_SPECS to be initialized */
1326 const char *name
; /* name of the spec. */
1327 const char *ptr
; /* available ptr if no static pointer */
1329 /* The following fields are not initialized */
1330 /* by EXTRA_SPECS */
1331 const char **ptr_spec
; /* pointer to the spec itself. */
1332 struct spec_list
*next
; /* Next spec in linked list. */
1333 int name_len
; /* length of the name */
1334 bool user_p
; /* whether string come from file spec. */
1335 bool alloc_p
; /* whether string was allocated */
1338 #define INIT_STATIC_SPEC(NAME,PTR) \
1339 { NAME, NULL, PTR, (struct spec_list *) 0, sizeof (NAME) - 1, false, false }
1341 /* List of statically defined specs. */
1342 static struct spec_list static_specs
[] =
1344 INIT_STATIC_SPEC ("asm", &asm_spec
),
1345 INIT_STATIC_SPEC ("asm_debug", &asm_debug
),
1346 INIT_STATIC_SPEC ("asm_final", &asm_final_spec
),
1347 INIT_STATIC_SPEC ("asm_options", &asm_options
),
1348 INIT_STATIC_SPEC ("invoke_as", &invoke_as
),
1349 INIT_STATIC_SPEC ("cpp", &cpp_spec
),
1350 INIT_STATIC_SPEC ("cpp_options", &cpp_options
),
1351 INIT_STATIC_SPEC ("cpp_debug_options", &cpp_debug_options
),
1352 INIT_STATIC_SPEC ("cpp_unique_options", &cpp_unique_options
),
1353 INIT_STATIC_SPEC ("trad_capable_cpp", &trad_capable_cpp
),
1354 INIT_STATIC_SPEC ("cc1", &cc1_spec
),
1355 INIT_STATIC_SPEC ("cc1_options", &cc1_options
),
1356 INIT_STATIC_SPEC ("cc1plus", &cc1plus_spec
),
1357 INIT_STATIC_SPEC ("link_gcc_c_sequence", &link_gcc_c_sequence_spec
),
1358 INIT_STATIC_SPEC ("link_ssp", &link_ssp_spec
),
1359 INIT_STATIC_SPEC ("endfile", &endfile_spec
),
1360 INIT_STATIC_SPEC ("link", &link_spec
),
1361 INIT_STATIC_SPEC ("lib", &lib_spec
),
1362 INIT_STATIC_SPEC ("link_gomp", &link_gomp_spec
),
1363 INIT_STATIC_SPEC ("libgcc", &libgcc_spec
),
1364 INIT_STATIC_SPEC ("startfile", &startfile_spec
),
1365 INIT_STATIC_SPEC ("cross_compile", &cross_compile
),
1366 INIT_STATIC_SPEC ("version", &compiler_version
),
1367 INIT_STATIC_SPEC ("multilib", &multilib_select
),
1368 INIT_STATIC_SPEC ("multilib_defaults", &multilib_defaults
),
1369 INIT_STATIC_SPEC ("multilib_extra", &multilib_extra
),
1370 INIT_STATIC_SPEC ("multilib_matches", &multilib_matches
),
1371 INIT_STATIC_SPEC ("multilib_exclusions", &multilib_exclusions
),
1372 INIT_STATIC_SPEC ("multilib_options", &multilib_options
),
1373 INIT_STATIC_SPEC ("multilib_reuse", &multilib_reuse
),
1374 INIT_STATIC_SPEC ("linker", &linker_name_spec
),
1375 INIT_STATIC_SPEC ("linker_plugin_file", &linker_plugin_file_spec
),
1376 INIT_STATIC_SPEC ("lto_wrapper", <o_wrapper_spec
),
1377 INIT_STATIC_SPEC ("lto_gcc", <o_gcc_spec
),
1378 INIT_STATIC_SPEC ("link_libgcc", &link_libgcc_spec
),
1379 INIT_STATIC_SPEC ("md_exec_prefix", &md_exec_prefix
),
1380 INIT_STATIC_SPEC ("md_startfile_prefix", &md_startfile_prefix
),
1381 INIT_STATIC_SPEC ("md_startfile_prefix_1", &md_startfile_prefix_1
),
1382 INIT_STATIC_SPEC ("startfile_prefix_spec", &startfile_prefix_spec
),
1383 INIT_STATIC_SPEC ("sysroot_spec", &sysroot_spec
),
1384 INIT_STATIC_SPEC ("sysroot_suffix_spec", &sysroot_suffix_spec
),
1385 INIT_STATIC_SPEC ("sysroot_hdrs_suffix_spec", &sysroot_hdrs_suffix_spec
),
1386 INIT_STATIC_SPEC ("self_spec", &self_spec
),
1389 #ifdef EXTRA_SPECS /* additional specs needed */
1390 /* Structure to keep track of just the first two args of a spec_list.
1391 That is all that the EXTRA_SPECS macro gives us. */
1394 const char *const name
;
1395 const char *const ptr
;
1398 static const struct spec_list_1 extra_specs_1
[] = { EXTRA_SPECS
};
1399 static struct spec_list
*extra_specs
= (struct spec_list
*) 0;
1402 /* List of dynamically allocates specs that have been defined so far. */
1404 static struct spec_list
*specs
= (struct spec_list
*) 0;
1406 /* List of static spec functions. */
1408 static const struct spec_function static_spec_functions
[] =
1410 { "getenv", getenv_spec_function
},
1411 { "if-exists", if_exists_spec_function
},
1412 { "if-exists-else", if_exists_else_spec_function
},
1413 { "sanitize", sanitize_spec_function
},
1414 { "replace-outfile", replace_outfile_spec_function
},
1415 { "remove-outfile", remove_outfile_spec_function
},
1416 { "version-compare", version_compare_spec_function
},
1417 { "include", include_spec_function
},
1418 { "find-file", find_file_spec_function
},
1419 { "find-plugindir", find_plugindir_spec_function
},
1420 { "print-asm-header", print_asm_header_spec_function
},
1421 { "compare-debug-dump-opt", compare_debug_dump_opt_spec_function
},
1422 { "compare-debug-self-opt", compare_debug_self_opt_spec_function
},
1423 { "compare-debug-auxbase-opt", compare_debug_auxbase_opt_spec_function
},
1424 { "pass-through-libs", pass_through_libs_spec_func
},
1425 { "replace-extension", replace_extension_spec_func
},
1426 #ifdef EXTRA_SPEC_FUNCTIONS
1427 EXTRA_SPEC_FUNCTIONS
1432 static int processing_spec_function
;
1434 /* Add appropriate libgcc specs to OBSTACK, taking into account
1435 various permutations of -shared-libgcc, -shared, and such. */
1437 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
1439 #ifndef USE_LD_AS_NEEDED
1440 #define USE_LD_AS_NEEDED 0
1444 init_gcc_specs (struct obstack
*obstack
, const char *shared_name
,
1445 const char *static_name
, const char *eh_name
)
1449 buf
= concat ("%{static|static-libgcc:", static_name
, " ", eh_name
, "}"
1450 "%{!static:%{!static-libgcc:"
1451 #if USE_LD_AS_NEEDED
1452 "%{!shared-libgcc:",
1453 static_name
, " " LD_AS_NEEDED_OPTION
" ",
1454 shared_name
, " " LD_NO_AS_NEEDED_OPTION
1457 shared_name
, "%{!shared: ", static_name
, "}"
1461 "%{!shared-libgcc:", static_name
, " ", eh_name
, "}"
1462 "%{shared-libgcc:", shared_name
, " ", static_name
, "}"
1466 "%{shared-libgcc:", shared_name
, "}"
1467 "%{!shared-libgcc:", static_name
, "}"
1470 "%{shared:", shared_name
, "}"
1475 obstack_grow (obstack
, buf
, strlen (buf
));
1478 #endif /* ENABLE_SHARED_LIBGCC */
1480 /* Initialize the specs lookup routines. */
1485 struct spec_list
*next
= (struct spec_list
*) 0;
1486 struct spec_list
*sl
= (struct spec_list
*) 0;
1490 return; /* Already initialized. */
1493 fnotice (stderr
, "Using built-in specs.\n");
1496 extra_specs
= XCNEWVEC (struct spec_list
, ARRAY_SIZE (extra_specs_1
));
1498 for (i
= ARRAY_SIZE (extra_specs_1
) - 1; i
>= 0; i
--)
1500 sl
= &extra_specs
[i
];
1501 sl
->name
= extra_specs_1
[i
].name
;
1502 sl
->ptr
= extra_specs_1
[i
].ptr
;
1504 sl
->name_len
= strlen (sl
->name
);
1505 sl
->ptr_spec
= &sl
->ptr
;
1510 for (i
= ARRAY_SIZE (static_specs
) - 1; i
>= 0; i
--)
1512 sl
= &static_specs
[i
];
1517 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
1518 /* ??? If neither -shared-libgcc nor --static-libgcc was
1519 seen, then we should be making an educated guess. Some proposed
1520 heuristics for ELF include:
1522 (1) If "-Wl,--export-dynamic", then it's a fair bet that the
1523 program will be doing dynamic loading, which will likely
1524 need the shared libgcc.
1526 (2) If "-ldl", then it's also a fair bet that we're doing
1529 (3) For each ET_DYN we're linking against (either through -lfoo
1530 or /some/path/foo.so), check to see whether it or one of
1531 its dependencies depends on a shared libgcc.
1535 If the runtime is fixed to look for program headers instead
1536 of calling __register_frame_info at all, for each object,
1537 use the shared libgcc if any EH symbol referenced.
1539 If crtstuff is fixed to not invoke __register_frame_info
1540 automatically, for each object, use the shared libgcc if
1541 any non-empty unwind section found.
1543 Doing any of this probably requires invoking an external program to
1544 do the actual object file scanning. */
1546 const char *p
= libgcc_spec
;
1549 /* Transform the extant libgcc_spec into one that uses the shared libgcc
1550 when given the proper command line arguments. */
1553 if (in_sep
&& *p
== '-' && strncmp (p
, "-lgcc", 5) == 0)
1555 init_gcc_specs (&obstack
,
1557 #ifdef USE_LIBUNWIND_EXCEPTIONS
1563 #ifdef USE_LIBUNWIND_EXCEPTIONS
1564 # ifdef HAVE_LD_STATIC_DYNAMIC
1565 " %{!static:" LD_STATIC_OPTION
"} -lunwind"
1566 " %{!static:" LD_DYNAMIC_OPTION
"}"
1576 else if (in_sep
&& *p
== 'l' && strncmp (p
, "libgcc.a%s", 10) == 0)
1578 /* Ug. We don't know shared library extensions. Hope that
1579 systems that use this form don't do shared libraries. */
1580 init_gcc_specs (&obstack
,
1584 #ifdef USE_LIBUNWIND_EXCEPTIONS
1593 obstack_1grow (&obstack
, *p
);
1594 in_sep
= (*p
== ' ');
1599 obstack_1grow (&obstack
, '\0');
1600 libgcc_spec
= XOBFINISH (&obstack
, const char *);
1603 #ifdef USE_AS_TRADITIONAL_FORMAT
1604 /* Prepend "--traditional-format" to whatever asm_spec we had before. */
1606 static const char tf
[] = "--traditional-format ";
1607 obstack_grow (&obstack
, tf
, sizeof (tf
) - 1);
1608 obstack_grow0 (&obstack
, asm_spec
, strlen (asm_spec
));
1609 asm_spec
= XOBFINISH (&obstack
, const char *);
1613 #if defined LINK_EH_SPEC || defined LINK_BUILDID_SPEC || \
1614 defined LINKER_HASH_STYLE
1615 # ifdef LINK_BUILDID_SPEC
1616 /* Prepend LINK_BUILDID_SPEC to whatever link_spec we had before. */
1617 obstack_grow (&obstack
, LINK_BUILDID_SPEC
, sizeof (LINK_BUILDID_SPEC
) - 1);
1619 # ifdef LINK_EH_SPEC
1620 /* Prepend LINK_EH_SPEC to whatever link_spec we had before. */
1621 obstack_grow (&obstack
, LINK_EH_SPEC
, sizeof (LINK_EH_SPEC
) - 1);
1623 # ifdef LINKER_HASH_STYLE
1624 /* Prepend --hash-style=LINKER_HASH_STYLE to whatever link_spec we had
1627 static const char hash_style
[] = "--hash-style=";
1628 obstack_grow (&obstack
, hash_style
, sizeof (hash_style
) - 1);
1629 obstack_grow (&obstack
, LINKER_HASH_STYLE
, sizeof (LINKER_HASH_STYLE
) - 1);
1630 obstack_1grow (&obstack
, ' ');
1633 obstack_grow0 (&obstack
, link_spec
, strlen (link_spec
));
1634 link_spec
= XOBFINISH (&obstack
, const char *);
1640 /* Change the value of spec NAME to SPEC. If SPEC is empty, then the spec is
1641 removed; If the spec starts with a + then SPEC is added to the end of the
1645 set_spec (const char *name
, const char *spec
, bool user_p
)
1647 struct spec_list
*sl
;
1648 const char *old_spec
;
1649 int name_len
= strlen (name
);
1652 /* If this is the first call, initialize the statically allocated specs. */
1655 struct spec_list
*next
= (struct spec_list
*) 0;
1656 for (i
= ARRAY_SIZE (static_specs
) - 1; i
>= 0; i
--)
1658 sl
= &static_specs
[i
];
1665 /* See if the spec already exists. */
1666 for (sl
= specs
; sl
; sl
= sl
->next
)
1667 if (name_len
== sl
->name_len
&& !strcmp (sl
->name
, name
))
1672 /* Not found - make it. */
1673 sl
= XNEW (struct spec_list
);
1674 sl
->name
= xstrdup (name
);
1675 sl
->name_len
= name_len
;
1676 sl
->ptr_spec
= &sl
->ptr
;
1678 *(sl
->ptr_spec
) = "";
1683 old_spec
= *(sl
->ptr_spec
);
1684 *(sl
->ptr_spec
) = ((spec
[0] == '+' && ISSPACE ((unsigned char)spec
[1]))
1685 ? concat (old_spec
, spec
+ 1, NULL
)
1690 fnotice (stderr
, "Setting spec %s to '%s'\n\n", name
, *(sl
->ptr_spec
));
1693 /* Free the old spec. */
1694 if (old_spec
&& sl
->alloc_p
)
1695 free (CONST_CAST (char *, old_spec
));
1697 sl
->user_p
= user_p
;
1701 /* Accumulate a command (program name and args), and run it. */
1703 typedef const char *const_char_p
; /* For DEF_VEC_P. */
1705 /* Vector of pointers to arguments in the current line of specifications. */
1707 static vec
<const_char_p
> argbuf
;
1709 /* Position in the argbuf vector containing the name of the output file
1710 (the value associated with the "-o" flag). */
1712 static int have_o_argbuf_index
= 0;
1714 /* Were the options -c, -S or -E passed. */
1715 static int have_c
= 0;
1717 /* Was the option -o passed. */
1718 static int have_o
= 0;
1720 /* This is the list of suffixes and codes (%g/%u/%U/%j) and the associated
1721 temp file. If the HOST_BIT_BUCKET is used for %j, no entry is made for
1724 static struct temp_name
{
1725 const char *suffix
; /* suffix associated with the code. */
1726 int length
; /* strlen (suffix). */
1727 int unique
; /* Indicates whether %g or %u/%U was used. */
1728 const char *filename
; /* associated filename. */
1729 int filename_length
; /* strlen (filename). */
1730 struct temp_name
*next
;
1733 /* Number of commands executed so far. */
1735 static int execution_count
;
1737 /* Number of commands that exited with a signal. */
1739 static int signal_count
;
1741 /* Allocate the argument vector. */
1749 /* Clear out the vector of arguments (after a command is executed). */
1754 argbuf
.truncate (0);
1757 /* Add one argument to the vector at the end.
1758 This is done when a space is seen or at the end of the line.
1759 If DELETE_ALWAYS is nonzero, the arg is a filename
1760 and the file should be deleted eventually.
1761 If DELETE_FAILURE is nonzero, the arg is a filename
1762 and the file should be deleted if this compilation fails. */
1765 store_arg (const char *arg
, int delete_always
, int delete_failure
)
1767 argbuf
.safe_push (arg
);
1769 if (strcmp (arg
, "-o") == 0)
1770 have_o_argbuf_index
= argbuf
.length ();
1771 if (delete_always
|| delete_failure
)
1774 /* If the temporary file we should delete is specified as
1775 part of a joined argument extract the filename. */
1777 && (p
= strrchr (arg
, '=')))
1779 record_temp_file (arg
, delete_always
, delete_failure
);
1783 /* Load specs from a file name named FILENAME, replacing occurrences of
1784 various different types of line-endings, \r\n, \n\r and just \r, with
1788 load_specs (const char *filename
)
1792 struct stat statbuf
;
1799 fnotice (stderr
, "Reading specs from %s\n", filename
);
1801 /* Open and stat the file. */
1802 desc
= open (filename
, O_RDONLY
, 0);
1804 pfatal_with_name (filename
);
1805 if (stat (filename
, &statbuf
) < 0)
1806 pfatal_with_name (filename
);
1808 /* Read contents of file into BUFFER. */
1809 buffer
= XNEWVEC (char, statbuf
.st_size
+ 1);
1810 readlen
= read (desc
, buffer
, (unsigned) statbuf
.st_size
);
1812 pfatal_with_name (filename
);
1813 buffer
[readlen
] = 0;
1816 specs
= XNEWVEC (char, readlen
+ 1);
1818 for (buffer_p
= buffer
; buffer_p
&& *buffer_p
; buffer_p
++)
1824 if (buffer_p
> buffer
&& *(buffer_p
- 1) == '\n') /* \n\r */
1826 else if (*(buffer_p
+ 1) == '\n') /* \r\n */
1840 /* Read compilation specs from a file named FILENAME,
1841 replacing the default ones.
1843 A suffix which starts with `*' is a definition for
1844 one of the machine-specific sub-specs. The "suffix" should be
1845 *asm, *cc1, *cpp, *link, *startfile, etc.
1846 The corresponding spec is stored in asm_spec, etc.,
1847 rather than in the `compilers' vector.
1849 Anything invalid in the file is a fatal error. */
1852 read_specs (const char *filename
, bool main_p
, bool user_p
)
1857 buffer
= load_specs (filename
);
1859 /* Scan BUFFER for specs, putting them in the vector. */
1865 char *in
, *out
, *p1
, *p2
, *p3
;
1867 /* Advance P in BUFFER to the next nonblank nocomment line. */
1868 p
= skip_whitespace (p
);
1872 /* Is this a special command that starts with '%'? */
1873 /* Don't allow this for the main specs file, since it would
1874 encourage people to overwrite it. */
1875 if (*p
== '%' && !main_p
)
1878 while (*p
&& *p
!= '\n')
1884 if (!strncmp (p1
, "%include", sizeof ("%include") - 1)
1885 && (p1
[sizeof "%include" - 1] == ' '
1886 || p1
[sizeof "%include" - 1] == '\t'))
1890 p1
+= sizeof ("%include");
1891 while (*p1
== ' ' || *p1
== '\t')
1894 if (*p1
++ != '<' || p
[-2] != '>')
1895 fatal_error ("specs %%include syntax malformed after "
1897 (long) (p1
- buffer
+ 1));
1900 new_filename
= find_a_file (&startfile_prefixes
, p1
, R_OK
, true);
1901 read_specs (new_filename
? new_filename
: p1
, false, user_p
);
1904 else if (!strncmp (p1
, "%include_noerr", sizeof "%include_noerr" - 1)
1905 && (p1
[sizeof "%include_noerr" - 1] == ' '
1906 || p1
[sizeof "%include_noerr" - 1] == '\t'))
1910 p1
+= sizeof "%include_noerr";
1911 while (*p1
== ' ' || *p1
== '\t')
1914 if (*p1
++ != '<' || p
[-2] != '>')
1915 fatal_error ("specs %%include syntax malformed after "
1917 (long) (p1
- buffer
+ 1));
1920 new_filename
= find_a_file (&startfile_prefixes
, p1
, R_OK
, true);
1922 read_specs (new_filename
, false, user_p
);
1923 else if (verbose_flag
)
1924 fnotice (stderr
, "could not find specs file %s\n", p1
);
1927 else if (!strncmp (p1
, "%rename", sizeof "%rename" - 1)
1928 && (p1
[sizeof "%rename" - 1] == ' '
1929 || p1
[sizeof "%rename" - 1] == '\t'))
1932 struct spec_list
*sl
;
1933 struct spec_list
*newsl
;
1935 /* Get original name. */
1936 p1
+= sizeof "%rename";
1937 while (*p1
== ' ' || *p1
== '\t')
1940 if (! ISALPHA ((unsigned char) *p1
))
1941 fatal_error ("specs %%rename syntax malformed after "
1943 (long) (p1
- buffer
));
1946 while (*p2
&& !ISSPACE ((unsigned char) *p2
))
1949 if (*p2
!= ' ' && *p2
!= '\t')
1950 fatal_error ("specs %%rename syntax malformed after "
1952 (long) (p2
- buffer
));
1956 while (*p2
== ' ' || *p2
== '\t')
1959 if (! ISALPHA ((unsigned char) *p2
))
1960 fatal_error ("specs %%rename syntax malformed after "
1962 (long) (p2
- buffer
));
1964 /* Get new spec name. */
1966 while (*p3
&& !ISSPACE ((unsigned char) *p3
))
1970 fatal_error ("specs %%rename syntax malformed after "
1972 (long) (p3
- buffer
));
1975 for (sl
= specs
; sl
; sl
= sl
->next
)
1976 if (name_len
== sl
->name_len
&& !strcmp (sl
->name
, p1
))
1980 fatal_error ("specs %s spec was not found to be renamed", p1
);
1982 if (strcmp (p1
, p2
) == 0)
1985 for (newsl
= specs
; newsl
; newsl
= newsl
->next
)
1986 if (strcmp (newsl
->name
, p2
) == 0)
1987 fatal_error ("%s: attempt to rename spec %qs to "
1988 "already defined spec %qs",
1993 fnotice (stderr
, "rename spec %s to %s\n", p1
, p2
);
1995 fnotice (stderr
, "spec is '%s'\n\n", *(sl
->ptr_spec
));
1999 set_spec (p2
, *(sl
->ptr_spec
), user_p
);
2001 free (CONST_CAST (char *, *(sl
->ptr_spec
)));
2003 *(sl
->ptr_spec
) = "";
2008 fatal_error ("specs unknown %% command after %ld characters",
2009 (long) (p1
- buffer
));
2012 /* Find the colon that should end the suffix. */
2014 while (*p1
&& *p1
!= ':' && *p1
!= '\n')
2017 /* The colon shouldn't be missing. */
2019 fatal_error ("specs file malformed after %ld characters",
2020 (long) (p1
- buffer
));
2022 /* Skip back over trailing whitespace. */
2024 while (p2
> buffer
&& (p2
[-1] == ' ' || p2
[-1] == '\t'))
2027 /* Copy the suffix to a string. */
2028 suffix
= save_string (p
, p2
- p
);
2029 /* Find the next line. */
2030 p
= skip_whitespace (p1
+ 1);
2032 fatal_error ("specs file malformed after %ld characters",
2033 (long) (p
- buffer
));
2036 /* Find next blank line or end of string. */
2037 while (*p1
&& !(*p1
== '\n' && (p1
[1] == '\n' || p1
[1] == '\0')))
2040 /* Specs end at the blank line and do not include the newline. */
2041 spec
= save_string (p
, p1
- p
);
2044 /* Delete backslash-newline sequences from the spec. */
2049 if (in
[0] == '\\' && in
[1] == '\n')
2051 else if (in
[0] == '#')
2052 while (*in
&& *in
!= '\n')
2060 if (suffix
[0] == '*')
2062 if (! strcmp (suffix
, "*link_command"))
2063 link_command_spec
= spec
;
2065 set_spec (suffix
+ 1, spec
, user_p
);
2069 /* Add this pair to the vector. */
2071 = XRESIZEVEC (struct compiler
, compilers
, n_compilers
+ 2);
2073 compilers
[n_compilers
].suffix
= suffix
;
2074 compilers
[n_compilers
].spec
= spec
;
2076 memset (&compilers
[n_compilers
], 0, sizeof compilers
[n_compilers
]);
2080 link_command_spec
= spec
;
2083 if (link_command_spec
== 0)
2084 fatal_error ("spec file has no spec for linking");
2087 /* Record the names of temporary files we tell compilers to write,
2088 and delete them at the end of the run. */
2090 /* This is the common prefix we use to make temp file names.
2091 It is chosen once for each run of this program.
2092 It is substituted into a spec by %g or %j.
2093 Thus, all temp file names contain this prefix.
2094 In practice, all temp file names start with this prefix.
2096 This prefix comes from the envvar TMPDIR if it is defined;
2097 otherwise, from the P_tmpdir macro if that is defined;
2098 otherwise, in /usr/tmp or /tmp;
2099 or finally the current directory if all else fails. */
2101 static const char *temp_filename
;
2103 /* Length of the prefix. */
2105 static int temp_filename_length
;
2107 /* Define the list of temporary files to delete. */
2112 struct temp_file
*next
;
2115 /* Queue of files to delete on success or failure of compilation. */
2116 static struct temp_file
*always_delete_queue
;
2117 /* Queue of files to delete on failure of compilation. */
2118 static struct temp_file
*failure_delete_queue
;
2120 /* Record FILENAME as a file to be deleted automatically.
2121 ALWAYS_DELETE nonzero means delete it if all compilation succeeds;
2122 otherwise delete it in any case.
2123 FAIL_DELETE nonzero means delete it if a compilation step fails;
2124 otherwise delete it in any case. */
2127 record_temp_file (const char *filename
, int always_delete
, int fail_delete
)
2129 char *const name
= xstrdup (filename
);
2133 struct temp_file
*temp
;
2134 for (temp
= always_delete_queue
; temp
; temp
= temp
->next
)
2135 if (! filename_cmp (name
, temp
->name
))
2138 temp
= XNEW (struct temp_file
);
2139 temp
->next
= always_delete_queue
;
2141 always_delete_queue
= temp
;
2148 struct temp_file
*temp
;
2149 for (temp
= failure_delete_queue
; temp
; temp
= temp
->next
)
2150 if (! filename_cmp (name
, temp
->name
))
2156 temp
= XNEW (struct temp_file
);
2157 temp
->next
= failure_delete_queue
;
2159 failure_delete_queue
= temp
;
2165 /* Delete all the temporary files whose names we previously recorded. */
2167 #ifndef DELETE_IF_ORDINARY
2168 #define DELETE_IF_ORDINARY(NAME,ST,VERBOSE_FLAG) \
2171 if (stat (NAME, &ST) >= 0 && S_ISREG (ST.st_mode)) \
2172 if (unlink (NAME) < 0) \
2174 perror_with_name (NAME); \
2179 delete_if_ordinary (const char *name
)
2185 printf ("Delete %s? (y or n) ", name
);
2189 while ((c
= getchar ()) != '\n' && c
!= EOF
)
2192 if (i
== 'y' || i
== 'Y')
2194 DELETE_IF_ORDINARY (name
, st
, verbose_flag
);
2198 delete_temp_files (void)
2200 struct temp_file
*temp
;
2202 for (temp
= always_delete_queue
; temp
; temp
= temp
->next
)
2203 delete_if_ordinary (temp
->name
);
2204 always_delete_queue
= 0;
2207 /* Delete all the files to be deleted on error. */
2210 delete_failure_queue (void)
2212 struct temp_file
*temp
;
2214 for (temp
= failure_delete_queue
; temp
; temp
= temp
->next
)
2215 delete_if_ordinary (temp
->name
);
2219 clear_failure_queue (void)
2221 failure_delete_queue
= 0;
2224 /* Call CALLBACK for each path in PATHS, breaking out early if CALLBACK
2226 If DO_MULTI is true iterate over the paths twice, first with multilib
2227 suffix then without, otherwise iterate over the paths once without
2228 adding a multilib suffix. When DO_MULTI is true, some attempt is made
2229 to avoid visiting the same path twice, but we could do better. For
2230 instance, /usr/lib/../lib is considered different from /usr/lib.
2231 At least EXTRA_SPACE chars past the end of the path passed to
2232 CALLBACK are available for use by the callback.
2233 CALLBACK_INFO allows extra parameters to be passed to CALLBACK.
2235 Returns the value returned by CALLBACK. */
2238 for_each_path (const struct path_prefix
*paths
,
2241 void *(*callback
) (char *, void *),
2242 void *callback_info
)
2244 struct prefix_list
*pl
;
2245 const char *multi_dir
= NULL
;
2246 const char *multi_os_dir
= NULL
;
2247 const char *multiarch_suffix
= NULL
;
2248 const char *multi_suffix
;
2249 const char *just_multi_suffix
;
2252 bool skip_multi_dir
= false;
2253 bool skip_multi_os_dir
= false;
2255 multi_suffix
= machine_suffix
;
2256 just_multi_suffix
= just_machine_suffix
;
2257 if (do_multi
&& multilib_dir
&& strcmp (multilib_dir
, ".") != 0)
2259 multi_dir
= concat (multilib_dir
, dir_separator_str
, NULL
);
2260 multi_suffix
= concat (multi_suffix
, multi_dir
, NULL
);
2261 just_multi_suffix
= concat (just_multi_suffix
, multi_dir
, NULL
);
2263 if (do_multi
&& multilib_os_dir
&& strcmp (multilib_os_dir
, ".") != 0)
2264 multi_os_dir
= concat (multilib_os_dir
, dir_separator_str
, NULL
);
2266 multiarch_suffix
= concat (multiarch_dir
, dir_separator_str
, NULL
);
2270 size_t multi_dir_len
= 0;
2271 size_t multi_os_dir_len
= 0;
2272 size_t multiarch_len
= 0;
2274 size_t just_suffix_len
;
2278 multi_dir_len
= strlen (multi_dir
);
2280 multi_os_dir_len
= strlen (multi_os_dir
);
2281 if (multiarch_suffix
)
2282 multiarch_len
= strlen (multiarch_suffix
);
2283 suffix_len
= strlen (multi_suffix
);
2284 just_suffix_len
= strlen (just_multi_suffix
);
2288 len
= paths
->max_len
+ extra_space
+ 1;
2289 len
+= MAX (MAX (suffix_len
, multi_os_dir_len
), multiarch_len
);
2290 path
= XNEWVEC (char, len
);
2293 for (pl
= paths
->plist
; pl
!= 0; pl
= pl
->next
)
2295 len
= strlen (pl
->prefix
);
2296 memcpy (path
, pl
->prefix
, len
);
2298 /* Look first in MACHINE/VERSION subdirectory. */
2299 if (!skip_multi_dir
)
2301 memcpy (path
+ len
, multi_suffix
, suffix_len
+ 1);
2302 ret
= callback (path
, callback_info
);
2307 /* Some paths are tried with just the machine (ie. target)
2308 subdir. This is used for finding as, ld, etc. */
2310 && pl
->require_machine_suffix
== 2)
2312 memcpy (path
+ len
, just_multi_suffix
, just_suffix_len
+ 1);
2313 ret
= callback (path
, callback_info
);
2318 /* Now try the multiarch path. */
2320 && !pl
->require_machine_suffix
&& multiarch_dir
)
2322 memcpy (path
+ len
, multiarch_suffix
, multiarch_len
+ 1);
2323 ret
= callback (path
, callback_info
);
2328 /* Now try the base path. */
2329 if (!pl
->require_machine_suffix
2330 && !(pl
->os_multilib
? skip_multi_os_dir
: skip_multi_dir
))
2332 const char *this_multi
;
2333 size_t this_multi_len
;
2335 if (pl
->os_multilib
)
2337 this_multi
= multi_os_dir
;
2338 this_multi_len
= multi_os_dir_len
;
2342 this_multi
= multi_dir
;
2343 this_multi_len
= multi_dir_len
;
2347 memcpy (path
+ len
, this_multi
, this_multi_len
+ 1);
2351 ret
= callback (path
, callback_info
);
2359 if (multi_dir
== NULL
&& multi_os_dir
== NULL
)
2362 /* Run through the paths again, this time without multilibs.
2363 Don't repeat any we have already seen. */
2366 free (CONST_CAST (char *, multi_dir
));
2368 free (CONST_CAST (char *, multi_suffix
));
2369 multi_suffix
= machine_suffix
;
2370 free (CONST_CAST (char *, just_multi_suffix
));
2371 just_multi_suffix
= just_machine_suffix
;
2374 skip_multi_dir
= true;
2377 free (CONST_CAST (char *, multi_os_dir
));
2378 multi_os_dir
= NULL
;
2381 skip_multi_os_dir
= true;
2386 free (CONST_CAST (char *, multi_dir
));
2387 free (CONST_CAST (char *, multi_suffix
));
2388 free (CONST_CAST (char *, just_multi_suffix
));
2391 free (CONST_CAST (char *, multi_os_dir
));
2397 /* Callback for build_search_list. Adds path to obstack being built. */
2399 struct add_to_obstack_info
{
2406 add_to_obstack (char *path
, void *data
)
2408 struct add_to_obstack_info
*info
= (struct add_to_obstack_info
*) data
;
2410 if (info
->check_dir
&& !is_directory (path
, false))
2413 if (!info
->first_time
)
2414 obstack_1grow (info
->ob
, PATH_SEPARATOR
);
2416 obstack_grow (info
->ob
, path
, strlen (path
));
2418 info
->first_time
= false;
2422 /* Add or change the value of an environment variable, outputting the
2423 change to standard error if in verbose mode. */
2425 xputenv (const char *string
)
2428 fnotice (stderr
, "%s\n", string
);
2429 putenv (CONST_CAST (char *, string
));
2432 /* Build a list of search directories from PATHS.
2433 PREFIX is a string to prepend to the list.
2434 If CHECK_DIR_P is true we ensure the directory exists.
2435 If DO_MULTI is true, multilib paths are output first, then
2437 This is used mostly by putenv_from_prefixes so we use `collect_obstack'.
2438 It is also used by the --print-search-dirs flag. */
2441 build_search_list (const struct path_prefix
*paths
, const char *prefix
,
2442 bool check_dir
, bool do_multi
)
2444 struct add_to_obstack_info info
;
2446 info
.ob
= &collect_obstack
;
2447 info
.check_dir
= check_dir
;
2448 info
.first_time
= true;
2450 obstack_grow (&collect_obstack
, prefix
, strlen (prefix
));
2451 obstack_1grow (&collect_obstack
, '=');
2453 for_each_path (paths
, do_multi
, 0, add_to_obstack
, &info
);
2455 obstack_1grow (&collect_obstack
, '\0');
2456 return XOBFINISH (&collect_obstack
, char *);
2459 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
2463 putenv_from_prefixes (const struct path_prefix
*paths
, const char *env_var
,
2466 xputenv (build_search_list (paths
, env_var
, true, do_multi
));
2469 /* Check whether NAME can be accessed in MODE. This is like access,
2470 except that it never considers directories to be executable. */
2473 access_check (const char *name
, int mode
)
2479 if (stat (name
, &st
) < 0
2480 || S_ISDIR (st
.st_mode
))
2484 return access (name
, mode
);
2487 /* Callback for find_a_file. Appends the file name to the directory
2488 path. If the resulting file exists in the right mode, return the
2489 full pathname to the file. */
2491 struct file_at_path_info
{
2500 file_at_path (char *path
, void *data
)
2502 struct file_at_path_info
*info
= (struct file_at_path_info
*) data
;
2503 size_t len
= strlen (path
);
2505 memcpy (path
+ len
, info
->name
, info
->name_len
);
2506 len
+= info
->name_len
;
2508 /* Some systems have a suffix for executable files.
2509 So try appending that first. */
2510 if (info
->suffix_len
)
2512 memcpy (path
+ len
, info
->suffix
, info
->suffix_len
+ 1);
2513 if (access_check (path
, info
->mode
) == 0)
2518 if (access_check (path
, info
->mode
) == 0)
2524 /* Search for NAME using the prefix list PREFIXES. MODE is passed to
2525 access to check permissions. If DO_MULTI is true, search multilib
2526 paths then non-multilib paths, otherwise do not search multilib paths.
2527 Return 0 if not found, otherwise return its name, allocated with malloc. */
2530 find_a_file (const struct path_prefix
*pprefix
, const char *name
, int mode
,
2533 struct file_at_path_info info
;
2535 #ifdef DEFAULT_ASSEMBLER
2536 if (! strcmp (name
, "as") && access (DEFAULT_ASSEMBLER
, mode
) == 0)
2537 return xstrdup (DEFAULT_ASSEMBLER
);
2540 #ifdef DEFAULT_LINKER
2541 if (! strcmp (name
, "ld") && access (DEFAULT_LINKER
, mode
) == 0)
2542 return xstrdup (DEFAULT_LINKER
);
2545 /* Determine the filename to execute (special case for absolute paths). */
2547 if (IS_ABSOLUTE_PATH (name
))
2549 if (access (name
, mode
) == 0)
2550 return xstrdup (name
);
2556 info
.suffix
= (mode
& X_OK
) != 0 ? HOST_EXECUTABLE_SUFFIX
: "";
2557 info
.name_len
= strlen (info
.name
);
2558 info
.suffix_len
= strlen (info
.suffix
);
2561 return (char*) for_each_path (pprefix
, do_multi
,
2562 info
.name_len
+ info
.suffix_len
,
2563 file_at_path
, &info
);
2566 /* Ranking of prefixes in the sort list. -B prefixes are put before
2569 enum path_prefix_priority
2571 PREFIX_PRIORITY_B_OPT
,
2572 PREFIX_PRIORITY_LAST
2575 /* Add an entry for PREFIX in PLIST. The PLIST is kept in ascending
2576 order according to PRIORITY. Within each PRIORITY, new entries are
2579 If WARN is nonzero, we will warn if no file is found
2580 through this prefix. WARN should point to an int
2581 which will be set to 1 if this entry is used.
2583 COMPONENT is the value to be passed to update_path.
2585 REQUIRE_MACHINE_SUFFIX is 1 if this prefix can't be used without
2586 the complete value of machine_suffix.
2587 2 means try both machine_suffix and just_machine_suffix. */
2590 add_prefix (struct path_prefix
*pprefix
, const char *prefix
,
2591 const char *component
, /* enum prefix_priority */ int priority
,
2592 int require_machine_suffix
, int os_multilib
)
2594 struct prefix_list
*pl
, **prev
;
2597 for (prev
= &pprefix
->plist
;
2598 (*prev
) != NULL
&& (*prev
)->priority
<= priority
;
2599 prev
= &(*prev
)->next
)
2602 /* Keep track of the longest prefix. */
2604 prefix
= update_path (prefix
, component
);
2605 len
= strlen (prefix
);
2606 if (len
> pprefix
->max_len
)
2607 pprefix
->max_len
= len
;
2609 pl
= XNEW (struct prefix_list
);
2610 pl
->prefix
= prefix
;
2611 pl
->require_machine_suffix
= require_machine_suffix
;
2612 pl
->priority
= priority
;
2613 pl
->os_multilib
= os_multilib
;
2615 /* Insert after PREV. */
2620 /* Same as add_prefix, but prepending target_system_root to prefix. */
2621 /* The target_system_root prefix has been relocated by gcc_exec_prefix. */
2623 add_sysrooted_prefix (struct path_prefix
*pprefix
, const char *prefix
,
2624 const char *component
,
2625 /* enum prefix_priority */ int priority
,
2626 int require_machine_suffix
, int os_multilib
)
2628 if (!IS_ABSOLUTE_PATH (prefix
))
2629 fatal_error ("system path %qs is not absolute", prefix
);
2631 if (target_system_root
)
2633 char *sysroot_no_trailing_dir_separator
= xstrdup (target_system_root
);
2634 size_t sysroot_len
= strlen (target_system_root
);
2637 && target_system_root
[sysroot_len
- 1] == DIR_SEPARATOR
)
2638 sysroot_no_trailing_dir_separator
[sysroot_len
- 1] = '\0';
2640 if (target_sysroot_suffix
)
2641 prefix
= concat (sysroot_no_trailing_dir_separator
,
2642 target_sysroot_suffix
, prefix
, NULL
);
2644 prefix
= concat (sysroot_no_trailing_dir_separator
, prefix
, NULL
);
2646 free (sysroot_no_trailing_dir_separator
);
2648 /* We have to override this because GCC's notion of sysroot
2649 moves along with GCC. */
2653 add_prefix (pprefix
, prefix
, component
, priority
,
2654 require_machine_suffix
, os_multilib
);
2657 /* Execute the command specified by the arguments on the current line of spec.
2658 When using pipes, this includes several piped-together commands
2659 with `|' between them.
2661 Return 0 if successful, -1 if failed. */
2667 int n_commands
; /* # of command. */
2669 struct pex_obj
*pex
;
2672 const char *prog
; /* program name. */
2673 const char **argv
; /* vector of args. */
2677 struct command
*commands
; /* each command buffer with above info. */
2679 gcc_assert (!processing_spec_function
);
2683 string
= find_a_file (&exec_prefixes
,
2684 argbuf
[0], X_OK
, false);
2687 insert_wrapper (wrapper_string
);
2690 /* Count # of piped commands. */
2691 for (n_commands
= 1, i
= 0; argbuf
.iterate (i
, &arg
); i
++)
2692 if (strcmp (arg
, "|") == 0)
2695 /* Get storage for each command. */
2696 commands
= (struct command
*) alloca (n_commands
* sizeof (struct command
));
2698 /* Split argbuf into its separate piped processes,
2699 and record info about each one.
2700 Also search for the programs that are to be run. */
2702 argbuf
.safe_push (0);
2704 commands
[0].prog
= argbuf
[0]; /* first command. */
2705 commands
[0].argv
= argbuf
.address ();
2707 if (!wrapper_string
)
2709 string
= find_a_file (&exec_prefixes
, commands
[0].prog
, X_OK
, false);
2710 commands
[0].argv
[0] = (string
) ? string
: commands
[0].argv
[0];
2713 for (n_commands
= 1, i
= 0; argbuf
.iterate (i
, &arg
); i
++)
2714 if (arg
&& strcmp (arg
, "|") == 0)
2715 { /* each command. */
2716 #if defined (__MSDOS__) || defined (OS2) || defined (VMS)
2717 fatal_error ("-pipe not supported");
2719 argbuf
[i
] = 0; /* Termination of
2721 commands
[n_commands
].prog
= argbuf
[i
+ 1];
2722 commands
[n_commands
].argv
2723 = &(argbuf
.address ())[i
+ 1];
2724 string
= find_a_file (&exec_prefixes
, commands
[n_commands
].prog
,
2727 commands
[n_commands
].argv
[0] = string
;
2731 /* If -v, print what we are about to do, and maybe query. */
2735 /* For help listings, put a blank line between sub-processes. */
2736 if (print_help_list
)
2737 fputc ('\n', stderr
);
2739 /* Print each piped command as a separate line. */
2740 for (i
= 0; i
< n_commands
; i
++)
2742 const char *const *j
;
2744 if (verbose_only_flag
)
2746 for (j
= commands
[i
].argv
; *j
; j
++)
2749 for (p
= *j
; *p
; ++p
)
2750 if (!ISALNUM ((unsigned char) *p
)
2751 && *p
!= '_' && *p
!= '/' && *p
!= '-' && *p
!= '.')
2755 fprintf (stderr
, " \"");
2756 for (p
= *j
; *p
; ++p
)
2758 if (*p
== '"' || *p
== '\\' || *p
== '$')
2759 fputc ('\\', stderr
);
2762 fputc ('"', stderr
);
2764 /* If it's empty, print "". */
2766 fprintf (stderr
, " \"\"");
2768 fprintf (stderr
, " %s", *j
);
2772 for (j
= commands
[i
].argv
; *j
; j
++)
2773 /* If it's empty, print "". */
2775 fprintf (stderr
, " \"\"");
2777 fprintf (stderr
, " %s", *j
);
2779 /* Print a pipe symbol after all but the last command. */
2780 if (i
+ 1 != n_commands
)
2781 fprintf (stderr
, " |");
2782 fprintf (stderr
, "\n");
2785 if (verbose_only_flag
!= 0)
2787 /* verbose_only_flag should act as if the spec was
2788 executed, so increment execution_count before
2789 returning. This prevents spurious warnings about
2790 unused linker input files, etc. */
2795 fnotice (stderr
, "\nGo ahead? (y or n) ");
2799 while (getchar () != '\n')
2802 if (i
!= 'y' && i
!= 'Y')
2807 #ifdef ENABLE_VALGRIND_CHECKING
2808 /* Run the each command through valgrind. To simplify prepending the
2809 path to valgrind and the option "-q" (for quiet operation unless
2810 something triggers), we allocate a separate argv array. */
2812 for (i
= 0; i
< n_commands
; i
++)
2818 for (argc
= 0; commands
[i
].argv
[argc
] != NULL
; argc
++)
2821 argv
= XALLOCAVEC (const char *, argc
+ 3);
2823 argv
[0] = VALGRIND_PATH
;
2825 for (j
= 2; j
< argc
+ 2; j
++)
2826 argv
[j
] = commands
[i
].argv
[j
- 2];
2829 commands
[i
].argv
= argv
;
2830 commands
[i
].prog
= argv
[0];
2834 /* Run each piped subprocess. */
2836 pex
= pex_init (PEX_USE_PIPES
| ((report_times
|| report_times_to_file
)
2837 ? PEX_RECORD_TIMES
: 0),
2838 progname
, temp_filename
);
2840 fatal_error ("pex_init failed: %m");
2842 for (i
= 0; i
< n_commands
; i
++)
2846 const char *string
= commands
[i
].argv
[0];
2848 errmsg
= pex_run (pex
,
2849 ((i
+ 1 == n_commands
? PEX_LAST
: 0)
2850 | (string
== commands
[i
].prog
? PEX_SEARCH
: 0)),
2851 string
, CONST_CAST (char **, commands
[i
].argv
),
2856 fatal_error (errmsg
);
2860 pfatal_with_name (errmsg
);
2864 if (string
!= commands
[i
].prog
)
2865 free (CONST_CAST (char *, string
));
2870 /* Wait for all the subprocesses to finish. */
2874 struct pex_time
*times
= NULL
;
2877 statuses
= (int *) alloca (n_commands
* sizeof (int));
2878 if (!pex_get_status (pex
, n_commands
, statuses
))
2879 fatal_error ("failed to get exit status: %m");
2881 if (report_times
|| report_times_to_file
)
2883 times
= (struct pex_time
*) alloca (n_commands
* sizeof (struct pex_time
));
2884 if (!pex_get_times (pex
, n_commands
, times
))
2885 fatal_error ("failed to get process times: %m");
2890 for (i
= 0; i
< n_commands
; ++i
)
2892 int status
= statuses
[i
];
2894 if (WIFSIGNALED (status
))
2897 /* SIGPIPE is a special case. It happens in -pipe mode
2898 when the compiler dies before the preprocessor is done,
2899 or the assembler dies before the compiler is done.
2900 There's generally been an error already, and this is
2901 just fallout. So don't generate another error unless
2902 we would otherwise have succeeded. */
2903 if (WTERMSIG (status
) == SIGPIPE
2904 && (signal_count
|| greatest_status
>= MIN_FATAL_STATUS
))
2911 internal_error ("%s (program %s)",
2912 strsignal (WTERMSIG (status
)), commands
[i
].prog
);
2914 else if (WIFEXITED (status
)
2915 && WEXITSTATUS (status
) >= MIN_FATAL_STATUS
)
2917 if (WEXITSTATUS (status
) > greatest_status
)
2918 greatest_status
= WEXITSTATUS (status
);
2922 if (report_times
|| report_times_to_file
)
2924 struct pex_time
*pt
= ×
[i
];
2927 ut
= ((double) pt
->user_seconds
2928 + (double) pt
->user_microseconds
/ 1.0e6
);
2929 st
= ((double) pt
->system_seconds
2930 + (double) pt
->system_microseconds
/ 1.0e6
);
2935 fnotice (stderr
, "# %s %.2f %.2f\n",
2936 commands
[i
].prog
, ut
, st
);
2938 if (report_times_to_file
)
2941 const char *const *j
;
2943 fprintf (report_times_to_file
, "%g %g", ut
, st
);
2945 for (j
= &commands
[i
].prog
; *j
; j
= &commands
[i
].argv
[++c
])
2948 for (p
= *j
; *p
; ++p
)
2949 if (*p
== '"' || *p
== '\\' || *p
== '$'
2955 fprintf (report_times_to_file
, " \"");
2956 for (p
= *j
; *p
; ++p
)
2958 if (*p
== '"' || *p
== '\\' || *p
== '$')
2959 fputc ('\\', report_times_to_file
);
2960 fputc (*p
, report_times_to_file
);
2962 fputc ('"', report_times_to_file
);
2965 fprintf (report_times_to_file
, " %s", *j
);
2968 fputc ('\n', report_times_to_file
);
2978 /* Find all the switches given to us
2979 and make a vector describing them.
2980 The elements of the vector are strings, one per switch given.
2981 If a switch uses following arguments, then the `part1' field
2982 is the switch itself and the `args' field
2983 is a null-terminated vector containing the following arguments.
2984 Bits in the `live_cond' field are:
2985 SWITCH_LIVE to indicate this switch is true in a conditional spec.
2986 SWITCH_FALSE to indicate this switch is overridden by a later switch.
2987 SWITCH_IGNORE to indicate this switch should be ignored (used in %<S).
2988 SWITCH_IGNORE_PERMANENTLY to indicate this switch should be ignored
2989 in all do_spec calls afterwards. Used for %<S from self specs.
2990 The `validated' field is nonzero if any spec has looked at this switch;
2991 if it remains zero at the end of the run, it must be meaningless. */
2993 #define SWITCH_LIVE (1 << 0)
2994 #define SWITCH_FALSE (1 << 1)
2995 #define SWITCH_IGNORE (1 << 2)
2996 #define SWITCH_IGNORE_PERMANENTLY (1 << 3)
2997 #define SWITCH_KEEP_FOR_GCC (1 << 4)
3003 unsigned int live_cond
;
3009 static struct switchstr
*switches
;
3011 static int n_switches
;
3013 static int n_switches_alloc
;
3015 /* Set to zero if -fcompare-debug is disabled, positive if it's
3016 enabled and we're running the first compilation, negative if it's
3017 enabled and we're running the second compilation. For most of the
3018 time, it's in the range -1..1, but it can be temporarily set to 2
3019 or 3 to indicate that the -fcompare-debug flags didn't come from
3020 the command-line, but rather from the GCC_COMPARE_DEBUG environment
3021 variable, until a synthesized -fcompare-debug flag is added to the
3025 /* Set to nonzero if we've seen the -fcompare-debug-second flag. */
3026 int compare_debug_second
;
3028 /* Set to the flags that should be passed to the second compilation in
3029 a -fcompare-debug compilation. */
3030 const char *compare_debug_opt
;
3032 static struct switchstr
*switches_debug_check
[2];
3034 static int n_switches_debug_check
[2];
3036 static int n_switches_alloc_debug_check
[2];
3038 static char *debug_check_temp_file
[2];
3040 /* Language is one of three things:
3042 1) The name of a real programming language.
3043 2) NULL, indicating that no one has figured out
3045 3) '*', indicating that the file should be passed
3050 const char *language
;
3051 struct compiler
*incompiler
;
3056 /* Also a vector of input files specified. */
3058 static struct infile
*infiles
;
3062 static int n_infiles_alloc
;
3064 /* True if multiple input files are being compiled to a single
3067 static bool combine_inputs
;
3069 /* This counts the number of libraries added by lang_specific_driver, so that
3070 we can tell if there were any user supplied any files or libraries. */
3072 static int added_libraries
;
3074 /* And a vector of corresponding output files is made up later. */
3076 const char **outfiles
;
3078 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3080 /* Convert NAME to a new name if it is the standard suffix. DO_EXE
3081 is true if we should look for an executable suffix. DO_OBJ
3082 is true if we should look for an object suffix. */
3085 convert_filename (const char *name
, int do_exe ATTRIBUTE_UNUSED
,
3086 int do_obj ATTRIBUTE_UNUSED
)
3088 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3096 len
= strlen (name
);
3098 #ifdef HAVE_TARGET_OBJECT_SUFFIX
3099 /* Convert x.o to x.obj if TARGET_OBJECT_SUFFIX is ".obj". */
3100 if (do_obj
&& len
> 2
3101 && name
[len
- 2] == '.'
3102 && name
[len
- 1] == 'o')
3104 obstack_grow (&obstack
, name
, len
- 2);
3105 obstack_grow0 (&obstack
, TARGET_OBJECT_SUFFIX
, strlen (TARGET_OBJECT_SUFFIX
));
3106 name
= XOBFINISH (&obstack
, const char *);
3110 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3111 /* If there is no filetype, make it the executable suffix (which includes
3112 the "."). But don't get confused if we have just "-o". */
3113 if (! do_exe
|| TARGET_EXECUTABLE_SUFFIX
[0] == 0 || (len
== 2 && name
[0] == '-'))
3116 for (i
= len
- 1; i
>= 0; i
--)
3117 if (IS_DIR_SEPARATOR (name
[i
]))
3120 for (i
++; i
< len
; i
++)
3124 obstack_grow (&obstack
, name
, len
);
3125 obstack_grow0 (&obstack
, TARGET_EXECUTABLE_SUFFIX
,
3126 strlen (TARGET_EXECUTABLE_SUFFIX
));
3127 name
= XOBFINISH (&obstack
, const char *);
3134 /* Display the command line switches accepted by gcc. */
3138 printf (_("Usage: %s [options] file...\n"), progname
);
3139 fputs (_("Options:\n"), stdout
);
3141 fputs (_(" -pass-exit-codes Exit with highest error code from a phase\n"), stdout
);
3142 fputs (_(" --help Display this information\n"), stdout
);
3143 fputs (_(" --target-help Display target specific command line options\n"), stdout
);
3144 fputs (_(" --help={common|optimizers|params|target|warnings|[^]{joined|separate|undocumented}}[,...]\n"), stdout
);
3145 fputs (_(" Display specific types of command line options\n"), stdout
);
3147 fputs (_(" (Use '-v --help' to display command line options of sub-processes)\n"), stdout
);
3148 fputs (_(" --version Display compiler version information\n"), stdout
);
3149 fputs (_(" -dumpspecs Display all of the built in spec strings\n"), stdout
);
3150 fputs (_(" -dumpversion Display the version of the compiler\n"), stdout
);
3151 fputs (_(" -dumpmachine Display the compiler's target processor\n"), stdout
);
3152 fputs (_(" -print-search-dirs Display the directories in the compiler's search path\n"), stdout
);
3153 fputs (_(" -print-libgcc-file-name Display the name of the compiler's companion library\n"), stdout
);
3154 fputs (_(" -print-file-name=<lib> Display the full path to library <lib>\n"), stdout
);
3155 fputs (_(" -print-prog-name=<prog> Display the full path to compiler component <prog>\n"), stdout
);
3157 -print-multiarch Display the target's normalized GNU triplet, used as\n\
3158 a component in the library path\n"), stdout
);
3159 fputs (_(" -print-multi-directory Display the root directory for versions of libgcc\n"), stdout
);
3161 -print-multi-lib Display the mapping between command line options and\n\
3162 multiple library search directories\n"), stdout
);
3163 fputs (_(" -print-multi-os-directory Display the relative path to OS libraries\n"), stdout
);
3164 fputs (_(" -print-sysroot Display the target libraries directory\n"), stdout
);
3165 fputs (_(" -print-sysroot-headers-suffix Display the sysroot suffix used to find headers\n"), stdout
);
3166 fputs (_(" -Wa,<options> Pass comma-separated <options> on to the assembler\n"), stdout
);
3167 fputs (_(" -Wp,<options> Pass comma-separated <options> on to the preprocessor\n"), stdout
);
3168 fputs (_(" -Wl,<options> Pass comma-separated <options> on to the linker\n"), stdout
);
3169 fputs (_(" -Xassembler <arg> Pass <arg> on to the assembler\n"), stdout
);
3170 fputs (_(" -Xpreprocessor <arg> Pass <arg> on to the preprocessor\n"), stdout
);
3171 fputs (_(" -Xlinker <arg> Pass <arg> on to the linker\n"), stdout
);
3172 fputs (_(" -save-temps Do not delete intermediate files\n"), stdout
);
3173 fputs (_(" -save-temps=<arg> Do not delete intermediate files\n"), stdout
);
3175 -no-canonical-prefixes Do not canonicalize paths when building relative\n\
3176 prefixes to other gcc components\n"), stdout
);
3177 fputs (_(" -pipe Use pipes rather than intermediate files\n"), stdout
);
3178 fputs (_(" -time Time the execution of each subprocess\n"), stdout
);
3179 fputs (_(" -specs=<file> Override built-in specs with the contents of <file>\n"), stdout
);
3180 fputs (_(" -std=<standard> Assume that the input sources are for <standard>\n"), stdout
);
3182 --sysroot=<directory> Use <directory> as the root directory for headers\n\
3183 and libraries\n"), stdout
);
3184 fputs (_(" -B <directory> Add <directory> to the compiler's search paths\n"), stdout
);
3185 fputs (_(" -v Display the programs invoked by the compiler\n"), stdout
);
3186 fputs (_(" -### Like -v but options quoted and commands not executed\n"), stdout
);
3187 fputs (_(" -E Preprocess only; do not compile, assemble or link\n"), stdout
);
3188 fputs (_(" -S Compile only; do not assemble or link\n"), stdout
);
3189 fputs (_(" -c Compile and assemble, but do not link\n"), stdout
);
3190 fputs (_(" -o <file> Place the output into <file>\n"), stdout
);
3191 fputs (_(" -pie Create a position independent executable\n"), stdout
);
3192 fputs (_(" -shared Create a shared library\n"), stdout
);
3194 -x <language> Specify the language of the following input files\n\
3195 Permissible languages include: c c++ assembler none\n\
3196 'none' means revert to the default behavior of\n\
3197 guessing the language based on the file's extension\n\
3201 \nOptions starting with -g, -f, -m, -O, -W, or --param are automatically\n\
3202 passed on to the various sub-processes invoked by %s. In order to pass\n\
3203 other options on to these processes the -W<letter> options must be used.\n\
3206 /* The rest of the options are displayed by invocations of the various
3211 add_preprocessor_option (const char *option
, int len
)
3213 preprocessor_options
.safe_push (save_string (option
, len
));
3217 add_assembler_option (const char *option
, int len
)
3219 assembler_options
.safe_push (save_string (option
, len
));
3223 add_linker_option (const char *option
, int len
)
3225 linker_options
.safe_push (save_string (option
, len
));
3228 /* Allocate space for an input file in infiles. */
3233 if (n_infiles_alloc
== 0)
3235 n_infiles_alloc
= 16;
3236 infiles
= XNEWVEC (struct infile
, n_infiles_alloc
);
3238 else if (n_infiles_alloc
== n_infiles
)
3240 n_infiles_alloc
*= 2;
3241 infiles
= XRESIZEVEC (struct infile
, infiles
, n_infiles_alloc
);
3245 /* Store an input file with the given NAME and LANGUAGE in
3249 add_infile (const char *name
, const char *language
)
3252 infiles
[n_infiles
].name
= name
;
3253 infiles
[n_infiles
++].language
= language
;
3256 /* Allocate space for a switch in switches. */
3261 if (n_switches_alloc
== 0)
3263 n_switches_alloc
= 16;
3264 switches
= XNEWVEC (struct switchstr
, n_switches_alloc
);
3266 else if (n_switches_alloc
== n_switches
)
3268 n_switches_alloc
*= 2;
3269 switches
= XRESIZEVEC (struct switchstr
, switches
, n_switches_alloc
);
3273 /* Save an option OPT with N_ARGS arguments in array ARGS, marking it
3274 as validated if VALIDATED and KNOWN if it is an internal switch. */
3277 save_switch (const char *opt
, size_t n_args
, const char *const *args
,
3278 bool validated
, bool known
)
3281 switches
[n_switches
].part1
= opt
+ 1;
3283 switches
[n_switches
].args
= 0;
3286 switches
[n_switches
].args
= XNEWVEC (const char *, n_args
+ 1);
3287 memcpy (switches
[n_switches
].args
, args
, n_args
* sizeof (const char *));
3288 switches
[n_switches
].args
[n_args
] = NULL
;
3291 switches
[n_switches
].live_cond
= 0;
3292 switches
[n_switches
].validated
= validated
;
3293 switches
[n_switches
].known
= known
;
3294 switches
[n_switches
].ordering
= 0;
3298 /* Handle an option DECODED that is unknown to the option-processing
3302 driver_unknown_option_callback (const struct cl_decoded_option
*decoded
)
3304 const char *opt
= decoded
->arg
;
3305 if (opt
[1] == 'W' && opt
[2] == 'n' && opt
[3] == 'o' && opt
[4] == '-'
3306 && !(decoded
->errors
& CL_ERR_NEGATIVE
))
3308 /* Leave unknown -Wno-* options for the compiler proper, to be
3309 diagnosed only if there are warnings. */
3310 save_switch (decoded
->canonical_option
[0],
3311 decoded
->canonical_option_num_elements
- 1,
3312 &decoded
->canonical_option
[1], false, true);
3315 if (decoded
->opt_index
== OPT_SPECIAL_unknown
)
3317 /* Give it a chance to define it a a spec file. */
3318 save_switch (decoded
->canonical_option
[0],
3319 decoded
->canonical_option_num_elements
- 1,
3320 &decoded
->canonical_option
[1], false, false);
3327 /* Handle an option DECODED that is not marked as CL_DRIVER.
3328 LANG_MASK will always be CL_DRIVER. */
3331 driver_wrong_lang_callback (const struct cl_decoded_option
*decoded
,
3332 unsigned int lang_mask ATTRIBUTE_UNUSED
)
3334 /* At this point, non-driver options are accepted (and expected to
3335 be passed down by specs) unless marked to be rejected by the
3336 driver. Options to be rejected by the driver but accepted by the
3337 compilers proper are treated just like completely unknown
3339 const struct cl_option
*option
= &cl_options
[decoded
->opt_index
];
3341 if (option
->cl_reject_driver
)
3342 error ("unrecognized command line option %qs",
3343 decoded
->orig_option_with_args_text
);
3345 save_switch (decoded
->canonical_option
[0],
3346 decoded
->canonical_option_num_elements
- 1,
3347 &decoded
->canonical_option
[1], false, true);
3350 static const char *spec_lang
= 0;
3351 static int last_language_n_infiles
;
3353 /* Handle a driver option; arguments and return value as for
3357 driver_handle_option (struct gcc_options
*opts
,
3358 struct gcc_options
*opts_set
,
3359 const struct cl_decoded_option
*decoded
,
3360 unsigned int lang_mask ATTRIBUTE_UNUSED
, int kind
,
3362 const struct cl_option_handlers
*handlers ATTRIBUTE_UNUSED
,
3363 diagnostic_context
*dc
)
3365 size_t opt_index
= decoded
->opt_index
;
3366 const char *arg
= decoded
->arg
;
3367 const char *compare_debug_replacement_opt
;
3368 int value
= decoded
->value
;
3369 bool validated
= false;
3370 bool do_save
= true;
3372 gcc_assert (opts
== &global_options
);
3373 gcc_assert (opts_set
== &global_options_set
);
3374 gcc_assert (kind
== DK_UNSPECIFIED
);
3375 gcc_assert (loc
== UNKNOWN_LOCATION
);
3376 gcc_assert (dc
== global_dc
);
3382 struct spec_list
*sl
;
3384 for (sl
= specs
; sl
; sl
= sl
->next
)
3385 printf ("*%s:\n%s\n\n", sl
->name
, *(sl
->ptr_spec
));
3386 if (link_command_spec
)
3387 printf ("*link_command:\n%s\n\n", link_command_spec
);
3391 case OPT_dumpversion
:
3392 printf ("%s\n", spec_version
);
3395 case OPT_dumpmachine
:
3396 printf ("%s\n", spec_machine
);
3402 /* CPP driver cannot obtain switch from cc1_options. */
3404 add_preprocessor_option ("--version", strlen ("--version"));
3405 add_assembler_option ("--version", strlen ("--version"));
3406 add_linker_option ("--version", strlen ("--version"));
3410 print_help_list
= 1;
3412 /* CPP driver cannot obtain switch from cc1_options. */
3414 add_preprocessor_option ("--help", 6);
3415 add_assembler_option ("--help", 6);
3416 add_linker_option ("--help", 6);
3420 print_subprocess_help
= 2;
3423 case OPT__target_help
:
3424 print_subprocess_help
= 1;
3426 /* CPP driver cannot obtain switch from cc1_options. */
3428 add_preprocessor_option ("--target-help", 13);
3429 add_assembler_option ("--target-help", 13);
3430 add_linker_option ("--target-help", 13);
3433 case OPT__no_sysroot_suffix
:
3434 case OPT_pass_exit_codes
:
3435 case OPT_print_search_dirs
:
3436 case OPT_print_file_name_
:
3437 case OPT_print_prog_name_
:
3438 case OPT_print_multi_lib
:
3439 case OPT_print_multi_directory
:
3440 case OPT_print_sysroot
:
3441 case OPT_print_multi_os_directory
:
3442 case OPT_print_multiarch
:
3443 case OPT_print_sysroot_headers_suffix
:
3446 /* These options set the variables specified in common.opt
3447 automatically, and do not need to be saved for spec
3452 case OPT_print_libgcc_file_name
:
3453 print_file_name
= "libgcc.a";
3457 case OPT_fuse_ld_bfd
:
3461 case OPT_fuse_ld_gold
:
3465 case OPT_fcompare_debug_second
:
3466 compare_debug_second
= 1;
3469 case OPT_fcompare_debug
:
3473 compare_debug_replacement_opt
= "-fcompare-debug=";
3475 goto compare_debug_with_arg
;
3478 compare_debug_replacement_opt
= "-fcompare-debug=-gtoggle";
3480 goto compare_debug_with_arg
;
3487 case OPT_fcompare_debug_
:
3488 compare_debug_replacement_opt
= decoded
->canonical_option
[0];
3489 compare_debug_with_arg
:
3490 gcc_assert (decoded
->canonical_option_num_elements
== 1);
3491 gcc_assert (arg
!= NULL
);
3496 if (compare_debug
< 0)
3497 compare_debug_opt
= NULL
;
3499 compare_debug_opt
= arg
;
3500 save_switch (compare_debug_replacement_opt
, 0, NULL
, validated
, true);
3506 /* Pass the rest of this option to the assembler. */
3508 /* Split the argument at commas. */
3510 for (j
= 0; arg
[j
]; j
++)
3513 add_assembler_option (arg
+ prev
, j
- prev
);
3517 /* Record the part after the last comma. */
3518 add_assembler_option (arg
+ prev
, j
- prev
);
3526 /* Pass the rest of this option to the preprocessor. */
3528 /* Split the argument at commas. */
3530 for (j
= 0; arg
[j
]; j
++)
3533 add_preprocessor_option (arg
+ prev
, j
- prev
);
3537 /* Record the part after the last comma. */
3538 add_preprocessor_option (arg
+ prev
, j
- prev
);
3546 /* Split the argument at commas. */
3548 for (j
= 0; arg
[j
]; j
++)
3551 add_infile (save_string (arg
+ prev
, j
- prev
), "*");
3554 /* Record the part after the last comma. */
3555 add_infile (arg
+ prev
, "*");
3561 add_infile (arg
, "*");
3565 case OPT_Xpreprocessor
:
3566 add_preprocessor_option (arg
, strlen (arg
));
3570 case OPT_Xassembler
:
3571 add_assembler_option (arg
, strlen (arg
));
3576 /* POSIX allows separation of -l and the lib arg; canonicalize
3577 by concatenating -l with its arg */
3578 add_infile (concat ("-l", arg
, NULL
), "*");
3583 /* Similarly, canonicalize -L for linkers that may not accept
3584 separate arguments. */
3585 save_switch (concat ("-L", arg
, NULL
), 0, NULL
, validated
, true);
3590 save_switch (concat ("-F", arg
, NULL
), 0, NULL
, validated
, true);
3593 case OPT_save_temps
:
3594 save_temps_flag
= SAVE_TEMPS_CWD
;
3598 case OPT_save_temps_
:
3599 if (strcmp (arg
, "cwd") == 0)
3600 save_temps_flag
= SAVE_TEMPS_CWD
;
3601 else if (strcmp (arg
, "obj") == 0
3602 || strcmp (arg
, "object") == 0)
3603 save_temps_flag
= SAVE_TEMPS_OBJ
;
3605 fatal_error ("%qs is an unknown -save-temps option",
3606 decoded
->orig_option_with_args_text
);
3609 case OPT_no_canonical_prefixes
:
3610 /* Already handled as a special case, so ignored here. */
3616 /* These options set the variables specified in common.opt
3617 automatically, but do need to be saved for spec
3623 struct user_specs
*user
= XNEW (struct user_specs
);
3625 user
->next
= (struct user_specs
*) 0;
3626 user
->filename
= arg
;
3627 if (user_specs_tail
)
3628 user_specs_tail
->next
= user
;
3630 user_specs_head
= user
;
3631 user_specs_tail
= user
;
3637 target_system_root
= arg
;
3638 target_system_root_changed
= 1;
3643 if (report_times_to_file
)
3644 fclose (report_times_to_file
);
3645 report_times_to_file
= fopen (arg
, "a");
3651 This is similar to -v except that there is no execution
3652 of the commands and the echoed arguments are quoted. It
3653 is intended for use in shell scripts to capture the
3654 driver-generated command line. */
3655 verbose_only_flag
++;
3662 size_t len
= strlen (arg
);
3664 /* Catch the case where the user has forgotten to append a
3665 directory separator to the path. Note, they may be using
3666 -B to add an executable name prefix, eg "i386-elf-", in
3667 order to distinguish between multiple installations of
3668 GCC in the same directory. Hence we must check to see
3669 if appending a directory separator actually makes a
3670 valid directory name. */
3671 if (!IS_DIR_SEPARATOR (arg
[len
- 1])
3672 && is_directory (arg
, false))
3674 char *tmp
= XNEWVEC (char, len
+ 2);
3676 tmp
[len
] = DIR_SEPARATOR
;
3681 add_prefix (&exec_prefixes
, arg
, NULL
,
3682 PREFIX_PRIORITY_B_OPT
, 0, 0);
3683 add_prefix (&startfile_prefixes
, arg
, NULL
,
3684 PREFIX_PRIORITY_B_OPT
, 0, 0);
3685 add_prefix (&include_prefixes
, arg
, NULL
,
3686 PREFIX_PRIORITY_B_OPT
, 0, 0);
3693 if (!strcmp (spec_lang
, "none"))
3694 /* Suppress the warning if -xnone comes after the last input
3695 file, because alternate command interfaces like g++ might
3696 find it useful to place -xnone after each input file. */
3699 last_language_n_infiles
= n_infiles
;
3705 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX) || defined(HAVE_TARGET_OBJECT_SUFFIX)
3706 arg
= convert_filename (arg
, ! have_c
, 0);
3708 /* Save the output name in case -save-temps=obj was used. */
3709 save_temps_prefix
= xstrdup (arg
);
3710 /* On some systems, ld cannot handle "-o" without a space. So
3711 split the option from its argument. */
3712 save_switch ("-o", 1, &arg
, validated
, true);
3715 case OPT_static_libgcc
:
3716 case OPT_shared_libgcc
:
3717 case OPT_static_libgfortran
:
3718 case OPT_static_libstdc__
:
3719 /* These are always valid, since gcc.c itself understands the
3720 first two, gfortranspec.c understands -static-libgfortran and
3721 g++spec.c understands -static-libstdc++ */
3730 /* Various driver options need no special processing at this
3731 point, having been handled in a prescan above or being
3732 handled by specs. */
3737 save_switch (decoded
->canonical_option
[0],
3738 decoded
->canonical_option_num_elements
- 1,
3739 &decoded
->canonical_option
[1], validated
, true);
3743 /* Put the driver's standard set of option handlers in *HANDLERS. */
3746 set_option_handlers (struct cl_option_handlers
*handlers
)
3748 handlers
->unknown_option_callback
= driver_unknown_option_callback
;
3749 handlers
->wrong_lang_callback
= driver_wrong_lang_callback
;
3750 handlers
->num_handlers
= 3;
3751 handlers
->handlers
[0].handler
= driver_handle_option
;
3752 handlers
->handlers
[0].mask
= CL_DRIVER
;
3753 handlers
->handlers
[1].handler
= common_handle_option
;
3754 handlers
->handlers
[1].mask
= CL_COMMON
;
3755 handlers
->handlers
[2].handler
= target_handle_option
;
3756 handlers
->handlers
[2].mask
= CL_TARGET
;
3759 /* Create the vector `switches' and its contents.
3760 Store its length in `n_switches'. */
3763 process_command (unsigned int decoded_options_count
,
3764 struct cl_decoded_option
*decoded_options
)
3768 char *tooldir_prefix
, *tooldir_prefix2
;
3769 char *(*get_relative_prefix
) (const char *, const char *,
3770 const char *) = NULL
;
3771 struct cl_option_handlers handlers
;
3774 gcc_exec_prefix
= getenv ("GCC_EXEC_PREFIX");
3778 added_libraries
= 0;
3780 /* Figure compiler version from version string. */
3782 compiler_version
= temp1
= xstrdup (version_string
);
3784 for (; *temp1
; ++temp1
)
3793 /* Handle any -no-canonical-prefixes flag early, to assign the function
3794 that builds relative prefixes. This function creates default search
3795 paths that are needed later in normal option handling. */
3797 for (j
= 1; j
< decoded_options_count
; j
++)
3799 if (decoded_options
[j
].opt_index
== OPT_no_canonical_prefixes
)
3801 get_relative_prefix
= make_relative_prefix_ignore_links
;
3805 if (! get_relative_prefix
)
3806 get_relative_prefix
= make_relative_prefix
;
3808 /* Set up the default search paths. If there is no GCC_EXEC_PREFIX,
3809 see if we can create it from the pathname specified in
3810 decoded_options[0].arg. */
3812 gcc_libexec_prefix
= standard_libexec_prefix
;
3814 /* FIXME: make_relative_prefix doesn't yet work for VMS. */
3815 if (!gcc_exec_prefix
)
3817 gcc_exec_prefix
= get_relative_prefix (decoded_options
[0].arg
,
3818 standard_bindir_prefix
,
3819 standard_exec_prefix
);
3820 gcc_libexec_prefix
= get_relative_prefix (decoded_options
[0].arg
,
3821 standard_bindir_prefix
,
3822 standard_libexec_prefix
);
3823 if (gcc_exec_prefix
)
3824 xputenv (concat ("GCC_EXEC_PREFIX=", gcc_exec_prefix
, NULL
));
3828 /* make_relative_prefix requires a program name, but
3829 GCC_EXEC_PREFIX is typically a directory name with a trailing
3830 / (which is ignored by make_relative_prefix), so append a
3832 char *tmp_prefix
= concat (gcc_exec_prefix
, "gcc", NULL
);
3833 gcc_libexec_prefix
= get_relative_prefix (tmp_prefix
,
3834 standard_exec_prefix
,
3835 standard_libexec_prefix
);
3837 /* The path is unrelocated, so fallback to the original setting. */
3838 if (!gcc_libexec_prefix
)
3839 gcc_libexec_prefix
= standard_libexec_prefix
;
3845 /* From this point onward, gcc_exec_prefix is non-null if the toolchain
3846 is relocated. The toolchain was either relocated using GCC_EXEC_PREFIX
3847 or an automatically created GCC_EXEC_PREFIX from
3848 decoded_options[0].arg. */
3850 /* Do language-specific adjustment/addition of flags. */
3851 lang_specific_driver (&decoded_options
, &decoded_options_count
,
3854 if (gcc_exec_prefix
)
3856 int len
= strlen (gcc_exec_prefix
);
3858 if (len
> (int) sizeof ("/lib/gcc/") - 1
3859 && (IS_DIR_SEPARATOR (gcc_exec_prefix
[len
-1])))
3861 temp
= gcc_exec_prefix
+ len
- sizeof ("/lib/gcc/") + 1;
3862 if (IS_DIR_SEPARATOR (*temp
)
3863 && filename_ncmp (temp
+ 1, "lib", 3) == 0
3864 && IS_DIR_SEPARATOR (temp
[4])
3865 && filename_ncmp (temp
+ 5, "gcc", 3) == 0)
3866 len
-= sizeof ("/lib/gcc/") - 1;
3869 set_std_prefix (gcc_exec_prefix
, len
);
3870 add_prefix (&exec_prefixes
, gcc_libexec_prefix
, "GCC",
3871 PREFIX_PRIORITY_LAST
, 0, 0);
3872 add_prefix (&startfile_prefixes
, gcc_exec_prefix
, "GCC",
3873 PREFIX_PRIORITY_LAST
, 0, 0);
3876 /* COMPILER_PATH and LIBRARY_PATH have values
3877 that are lists of directory names with colons. */
3879 temp
= getenv ("COMPILER_PATH");
3882 const char *startp
, *endp
;
3883 char *nstore
= (char *) alloca (strlen (temp
) + 3);
3885 startp
= endp
= temp
;
3888 if (*endp
== PATH_SEPARATOR
|| *endp
== 0)
3890 strncpy (nstore
, startp
, endp
- startp
);
3892 strcpy (nstore
, concat (".", dir_separator_str
, NULL
));
3893 else if (!IS_DIR_SEPARATOR (endp
[-1]))
3895 nstore
[endp
- startp
] = DIR_SEPARATOR
;
3896 nstore
[endp
- startp
+ 1] = 0;
3899 nstore
[endp
- startp
] = 0;
3900 add_prefix (&exec_prefixes
, nstore
, 0,
3901 PREFIX_PRIORITY_LAST
, 0, 0);
3902 add_prefix (&include_prefixes
, nstore
, 0,
3903 PREFIX_PRIORITY_LAST
, 0, 0);
3906 endp
= startp
= endp
+ 1;
3913 temp
= getenv (LIBRARY_PATH_ENV
);
3914 if (temp
&& *cross_compile
== '0')
3916 const char *startp
, *endp
;
3917 char *nstore
= (char *) alloca (strlen (temp
) + 3);
3919 startp
= endp
= temp
;
3922 if (*endp
== PATH_SEPARATOR
|| *endp
== 0)
3924 strncpy (nstore
, startp
, endp
- startp
);
3926 strcpy (nstore
, concat (".", dir_separator_str
, NULL
));
3927 else if (!IS_DIR_SEPARATOR (endp
[-1]))
3929 nstore
[endp
- startp
] = DIR_SEPARATOR
;
3930 nstore
[endp
- startp
+ 1] = 0;
3933 nstore
[endp
- startp
] = 0;
3934 add_prefix (&startfile_prefixes
, nstore
, NULL
,
3935 PREFIX_PRIORITY_LAST
, 0, 1);
3938 endp
= startp
= endp
+ 1;
3945 /* Use LPATH like LIBRARY_PATH (for the CMU build program). */
3946 temp
= getenv ("LPATH");
3947 if (temp
&& *cross_compile
== '0')
3949 const char *startp
, *endp
;
3950 char *nstore
= (char *) alloca (strlen (temp
) + 3);
3952 startp
= endp
= temp
;
3955 if (*endp
== PATH_SEPARATOR
|| *endp
== 0)
3957 strncpy (nstore
, startp
, endp
- startp
);
3959 strcpy (nstore
, concat (".", dir_separator_str
, NULL
));
3960 else if (!IS_DIR_SEPARATOR (endp
[-1]))
3962 nstore
[endp
- startp
] = DIR_SEPARATOR
;
3963 nstore
[endp
- startp
+ 1] = 0;
3966 nstore
[endp
- startp
] = 0;
3967 add_prefix (&startfile_prefixes
, nstore
, NULL
,
3968 PREFIX_PRIORITY_LAST
, 0, 1);
3971 endp
= startp
= endp
+ 1;
3978 /* Process the options and store input files and switches in their
3981 last_language_n_infiles
= -1;
3983 set_option_handlers (&handlers
);
3985 for (j
= 1; j
< decoded_options_count
; j
++)
3987 switch (decoded_options
[j
].opt_index
)
3999 for (j
= 1; j
< decoded_options_count
; j
++)
4001 if (decoded_options
[j
].opt_index
== OPT_SPECIAL_input_file
)
4003 const char *arg
= decoded_options
[j
].arg
;
4004 const char *p
= strrchr (arg
, '@');
4008 #ifdef HAVE_TARGET_OBJECT_SUFFIX
4009 arg
= convert_filename (arg
, 0, access (arg
, F_OK
));
4011 /* For LTO static archive support we handle input file
4012 specifications that are composed of a filename and
4013 an offset like FNAME@OFFSET. */
4016 && sscanf (p
, "@%li%n", &offset
, &consumed
) >= 1
4017 && strlen (p
) == (unsigned int)consumed
)
4019 fname
= (char *)xmalloc (p
- arg
+ 1);
4020 memcpy (fname
, arg
, p
- arg
);
4021 fname
[p
- arg
] = '\0';
4022 /* Only accept non-stdin and existing FNAME parts, otherwise
4023 try with the full name. */
4024 if (strcmp (fname
, "-") == 0 || access (fname
, F_OK
) < 0)
4027 fname
= xstrdup (arg
);
4031 fname
= xstrdup (arg
);
4033 if (strcmp (fname
, "-") != 0 && access (fname
, F_OK
) < 0)
4034 perror_with_name (fname
);
4036 add_infile (arg
, spec_lang
);
4042 read_cmdline_option (&global_options
, &global_options_set
,
4043 decoded_options
+ j
, UNKNOWN_LOCATION
,
4044 CL_DRIVER
, &handlers
, global_dc
);
4047 /* If -save-temps=obj and -o name, create the prefix to use for %b.
4048 Otherwise just make -save-temps=obj the same as -save-temps=cwd. */
4049 if (save_temps_flag
== SAVE_TEMPS_OBJ
&& save_temps_prefix
!= NULL
)
4051 save_temps_length
= strlen (save_temps_prefix
);
4052 temp
= strrchr (lbasename (save_temps_prefix
), '.');
4055 save_temps_length
-= strlen (temp
);
4056 save_temps_prefix
[save_temps_length
] = '\0';
4060 else if (save_temps_prefix
!= NULL
)
4062 free (save_temps_prefix
);
4063 save_temps_prefix
= NULL
;
4066 if (save_temps_flag
&& use_pipes
)
4068 /* -save-temps overrides -pipe, so that temp files are produced */
4069 if (save_temps_flag
)
4070 warning (0, "-pipe ignored because -save-temps specified");
4076 const char *gcd
= getenv ("GCC_COMPARE_DEBUG");
4078 if (gcd
&& gcd
[0] == '-')
4081 compare_debug_opt
= gcd
;
4083 else if (gcd
&& *gcd
&& strcmp (gcd
, "0"))
4086 compare_debug_opt
= "-gtoggle";
4089 else if (compare_debug
< 0)
4092 gcc_assert (!compare_debug_opt
);
4095 /* Set up the search paths. We add directories that we expect to
4096 contain GNU Toolchain components before directories specified by
4097 the machine description so that we will find GNU components (like
4098 the GNU assembler) before those of the host system. */
4100 /* If we don't know where the toolchain has been installed, use the
4101 configured-in locations. */
4102 if (!gcc_exec_prefix
)
4105 add_prefix (&exec_prefixes
, standard_libexec_prefix
, "GCC",
4106 PREFIX_PRIORITY_LAST
, 1, 0);
4107 add_prefix (&exec_prefixes
, standard_libexec_prefix
, "BINUTILS",
4108 PREFIX_PRIORITY_LAST
, 2, 0);
4109 add_prefix (&exec_prefixes
, standard_exec_prefix
, "BINUTILS",
4110 PREFIX_PRIORITY_LAST
, 2, 0);
4112 add_prefix (&startfile_prefixes
, standard_exec_prefix
, "BINUTILS",
4113 PREFIX_PRIORITY_LAST
, 1, 0);
4116 gcc_assert (!IS_ABSOLUTE_PATH (tooldir_base_prefix
));
4117 tooldir_prefix2
= concat (tooldir_base_prefix
, spec_host_machine
,
4118 dir_separator_str
, NULL
);
4120 /* Look for tools relative to the location from which the driver is
4121 running, or, if that is not available, the configured prefix. */
4123 = concat (gcc_exec_prefix
? gcc_exec_prefix
: standard_exec_prefix
,
4124 spec_host_machine
, dir_separator_str
, spec_version
,
4125 accel_dir_suffix
, dir_separator_str
, tooldir_prefix2
, NULL
);
4126 free (tooldir_prefix2
);
4128 add_prefix (&exec_prefixes
,
4129 concat (tooldir_prefix
, "bin", dir_separator_str
, NULL
),
4130 "BINUTILS", PREFIX_PRIORITY_LAST
, 0, 0);
4131 add_prefix (&startfile_prefixes
,
4132 concat (tooldir_prefix
, "lib", dir_separator_str
, NULL
),
4133 "BINUTILS", PREFIX_PRIORITY_LAST
, 0, 1);
4134 free (tooldir_prefix
);
4136 #if defined(TARGET_SYSTEM_ROOT_RELOCATABLE) && !defined(VMS)
4137 /* If the normal TARGET_SYSTEM_ROOT is inside of $exec_prefix,
4138 then consider it to relocate with the rest of the GCC installation
4139 if GCC_EXEC_PREFIX is set.
4140 ``make_relative_prefix'' is not compiled for VMS, so don't call it. */
4141 if (target_system_root
&& !target_system_root_changed
&& gcc_exec_prefix
)
4143 char *tmp_prefix
= get_relative_prefix (decoded_options
[0].arg
,
4144 standard_bindir_prefix
,
4145 target_system_root
);
4146 if (tmp_prefix
&& access_check (tmp_prefix
, F_OK
) == 0)
4148 target_system_root
= tmp_prefix
;
4149 target_system_root_changed
= 1;
4154 /* More prefixes are enabled in main, after we read the specs file
4155 and determine whether this is cross-compilation or not. */
4157 if (n_infiles
== last_language_n_infiles
&& spec_lang
!= 0)
4158 warning (0, "%<-x %s%> after last input file has no effect", spec_lang
);
4160 /* Synthesize -fcompare-debug flag from the GCC_COMPARE_DEBUG
4161 environment variable. */
4162 if (compare_debug
== 2 || compare_debug
== 3)
4164 const char *opt
= concat ("-fcompare-debug=", compare_debug_opt
, NULL
);
4165 save_switch (opt
, 0, NULL
, false, true);
4169 /* Ensure we only invoke each subprocess once. */
4170 if (print_subprocess_help
|| print_help_list
|| print_version
)
4174 /* Create a dummy input file, so that we can pass
4175 the help option on to the various sub-processes. */
4176 add_infile ("help-dummy", "c");
4180 switches
[n_switches
].part1
= 0;
4182 infiles
[n_infiles
].name
= 0;
4185 /* Store switches not filtered out by %<S in spec in COLLECT_GCC_OPTIONS
4186 and place that in the environment. */
4189 set_collect_gcc_options (void)
4194 /* Build COLLECT_GCC_OPTIONS to have all of the options specified to
4196 obstack_grow (&collect_obstack
, "COLLECT_GCC_OPTIONS=",
4197 sizeof ("COLLECT_GCC_OPTIONS=") - 1);
4200 for (i
= 0; (int) i
< n_switches
; i
++)
4202 const char *const *args
;
4205 obstack_grow (&collect_obstack
, " ", 1);
4209 /* Ignore elided switches. */
4210 if ((switches
[i
].live_cond
4211 & (SWITCH_IGNORE
| SWITCH_KEEP_FOR_GCC
))
4215 obstack_grow (&collect_obstack
, "'-", 2);
4216 q
= switches
[i
].part1
;
4217 while ((p
= strchr (q
, '\'')))
4219 obstack_grow (&collect_obstack
, q
, p
- q
);
4220 obstack_grow (&collect_obstack
, "'\\''", 4);
4223 obstack_grow (&collect_obstack
, q
, strlen (q
));
4224 obstack_grow (&collect_obstack
, "'", 1);
4226 for (args
= switches
[i
].args
; args
&& *args
; args
++)
4228 obstack_grow (&collect_obstack
, " '", 2);
4230 while ((p
= strchr (q
, '\'')))
4232 obstack_grow (&collect_obstack
, q
, p
- q
);
4233 obstack_grow (&collect_obstack
, "'\\''", 4);
4236 obstack_grow (&collect_obstack
, q
, strlen (q
));
4237 obstack_grow (&collect_obstack
, "'", 1);
4240 obstack_grow (&collect_obstack
, "\0", 1);
4241 xputenv (XOBFINISH (&collect_obstack
, char *));
4244 /* Process a spec string, accumulating and running commands. */
4246 /* These variables describe the input file name.
4247 input_file_number is the index on outfiles of this file,
4248 so that the output file name can be stored for later use by %o.
4249 input_basename is the start of the part of the input file
4250 sans all directory names, and basename_length is the number
4251 of characters starting there excluding the suffix .c or whatever. */
4253 static const char *gcc_input_filename
;
4254 static int input_file_number
;
4255 size_t input_filename_length
;
4256 static int basename_length
;
4257 static int suffixed_basename_length
;
4258 static const char *input_basename
;
4259 static const char *input_suffix
;
4260 #ifndef HOST_LACKS_INODE_NUMBERS
4261 static struct stat input_stat
;
4263 static int input_stat_set
;
4265 /* The compiler used to process the current input file. */
4266 static struct compiler
*input_file_compiler
;
4268 /* These are variables used within do_spec and do_spec_1. */
4270 /* Nonzero if an arg has been started and not yet terminated
4271 (with space, tab or newline). */
4272 static int arg_going
;
4274 /* Nonzero means %d or %g has been seen; the next arg to be terminated
4275 is a temporary file name. */
4276 static int delete_this_arg
;
4278 /* Nonzero means %w has been seen; the next arg to be terminated
4279 is the output file name of this compilation. */
4280 static int this_is_output_file
;
4282 /* Nonzero means %s has been seen; the next arg to be terminated
4283 is the name of a library file and we should try the standard
4284 search dirs for it. */
4285 static int this_is_library_file
;
4287 /* Nonzero means %T has been seen; the next arg to be terminated
4288 is the name of a linker script and we should try all of the
4289 standard search dirs for it. If it is found insert a --script
4290 command line switch and then substitute the full path in place,
4291 otherwise generate an error message. */
4292 static int this_is_linker_script
;
4294 /* Nonzero means that the input of this command is coming from a pipe. */
4295 static int input_from_pipe
;
4297 /* Nonnull means substitute this for any suffix when outputting a switches
4299 static const char *suffix_subst
;
4301 /* If there is an argument being accumulated, terminate it and store it. */
4304 end_going_arg (void)
4310 obstack_1grow (&obstack
, 0);
4311 string
= XOBFINISH (&obstack
, const char *);
4312 if (this_is_library_file
)
4313 string
= find_file (string
);
4314 if (this_is_linker_script
)
4316 char * full_script_path
= find_a_file (&startfile_prefixes
, string
, R_OK
, true);
4318 if (full_script_path
== NULL
)
4320 error ("unable to locate default linker script %qs in the library search paths", string
);
4321 /* Script was not found on search path. */
4324 store_arg ("--script", false, false);
4325 string
= full_script_path
;
4327 store_arg (string
, delete_this_arg
, this_is_output_file
);
4328 if (this_is_output_file
)
4329 outfiles
[input_file_number
] = string
;
4335 /* Parse the WRAPPER string which is a comma separated list of the command line
4336 and insert them into the beginning of argbuf. */
4339 insert_wrapper (const char *wrapper
)
4343 char *buf
= xstrdup (wrapper
);
4345 unsigned int old_length
= argbuf
.length ();
4353 while ((p
= strchr (p
, ',')) != NULL
);
4355 argbuf
.safe_grow (old_length
+ n
);
4356 memmove (argbuf
.address () + n
,
4358 old_length
* sizeof (const_char_p
));
4372 while ((p
= strchr (p
, ',')) != NULL
);
4373 gcc_assert (i
== n
);
4376 /* Process the spec SPEC and run the commands specified therein.
4377 Returns 0 if the spec is successfully processed; -1 if failed. */
4380 do_spec (const char *spec
)
4384 value
= do_spec_2 (spec
);
4386 /* Force out any unfinished command.
4387 If -pipe, this forces out the last command if it ended in `|'. */
4390 if (argbuf
.length () > 0
4391 && !strcmp (argbuf
.last (), "|"))
4394 set_collect_gcc_options ();
4396 if (argbuf
.length () > 0)
4404 do_spec_2 (const char *spec
)
4410 delete_this_arg
= 0;
4411 this_is_output_file
= 0;
4412 this_is_library_file
= 0;
4413 this_is_linker_script
= 0;
4414 input_from_pipe
= 0;
4415 suffix_subst
= NULL
;
4417 result
= do_spec_1 (spec
, 0, NULL
);
4425 /* Process the given spec string and add any new options to the end
4426 of the switches/n_switches array. */
4429 do_option_spec (const char *name
, const char *spec
)
4431 unsigned int i
, value_count
, value_len
;
4432 const char *p
, *q
, *value
;
4433 char *tmp_spec
, *tmp_spec_p
;
4435 if (configure_default_options
[0].name
== NULL
)
4438 for (i
= 0; i
< ARRAY_SIZE (configure_default_options
); i
++)
4439 if (strcmp (configure_default_options
[i
].name
, name
) == 0)
4441 if (i
== ARRAY_SIZE (configure_default_options
))
4444 value
= configure_default_options
[i
].value
;
4445 value_len
= strlen (value
);
4447 /* Compute the size of the final spec. */
4450 while ((p
= strstr (p
, "%(VALUE)")) != NULL
)
4456 /* Replace each %(VALUE) by the specified value. */
4457 tmp_spec
= (char *) alloca (strlen (spec
) + 1
4458 + value_count
* (value_len
- strlen ("%(VALUE)")));
4459 tmp_spec_p
= tmp_spec
;
4461 while ((p
= strstr (q
, "%(VALUE)")) != NULL
)
4463 memcpy (tmp_spec_p
, q
, p
- q
);
4464 tmp_spec_p
= tmp_spec_p
+ (p
- q
);
4465 memcpy (tmp_spec_p
, value
, value_len
);
4466 tmp_spec_p
+= value_len
;
4467 q
= p
+ strlen ("%(VALUE)");
4469 strcpy (tmp_spec_p
, q
);
4471 do_self_spec (tmp_spec
);
4474 /* Process the given spec string and add any new options to the end
4475 of the switches/n_switches array. */
4478 do_self_spec (const char *spec
)
4483 do_spec_1 (" ", 0, NULL
);
4485 /* Mark %<S switches processed by do_self_spec to be ignored permanently.
4486 do_self_specs adds the replacements to switches array, so it shouldn't
4487 be processed afterwards. */
4488 for (i
= 0; i
< n_switches
; i
++)
4489 if ((switches
[i
].live_cond
& SWITCH_IGNORE
))
4490 switches
[i
].live_cond
|= SWITCH_IGNORE_PERMANENTLY
;
4492 if (argbuf
.length () > 0)
4494 const char **argbuf_copy
;
4495 struct cl_decoded_option
*decoded_options
;
4496 struct cl_option_handlers handlers
;
4497 unsigned int decoded_options_count
;
4500 /* Create a copy of argbuf with a dummy argv[0] entry for
4501 decode_cmdline_options_to_array. */
4502 argbuf_copy
= XNEWVEC (const char *,
4503 argbuf
.length () + 1);
4504 argbuf_copy
[0] = "";
4505 memcpy (argbuf_copy
+ 1, argbuf
.address (),
4506 argbuf
.length () * sizeof (const char *));
4508 decode_cmdline_options_to_array (argbuf
.length () + 1,
4510 CL_DRIVER
, &decoded_options
,
4511 &decoded_options_count
);
4514 set_option_handlers (&handlers
);
4516 for (j
= 1; j
< decoded_options_count
; j
++)
4518 switch (decoded_options
[j
].opt_index
)
4520 case OPT_SPECIAL_input_file
:
4521 /* Specs should only generate options, not input
4523 if (strcmp (decoded_options
[j
].arg
, "-") != 0)
4524 fatal_error ("switch %qs does not start with %<-%>",
4525 decoded_options
[j
].arg
);
4527 fatal_error ("spec-generated switch is just %<-%>");
4530 case OPT_fcompare_debug_second
:
4531 case OPT_fcompare_debug
:
4532 case OPT_fcompare_debug_
:
4534 /* Avoid duplicate processing of some options from
4535 compare-debug specs; just save them here. */
4536 save_switch (decoded_options
[j
].canonical_option
[0],
4537 (decoded_options
[j
].canonical_option_num_elements
4539 &decoded_options
[j
].canonical_option
[1], false, true);
4543 read_cmdline_option (&global_options
, &global_options_set
,
4544 decoded_options
+ j
, UNKNOWN_LOCATION
,
4545 CL_DRIVER
, &handlers
, global_dc
);
4551 switches
[n_switches
].part1
= 0;
4555 /* Callback for processing %D and %I specs. */
4557 struct spec_path_info
{
4562 bool separate_options
;
4566 spec_path (char *path
, void *data
)
4568 struct spec_path_info
*info
= (struct spec_path_info
*) data
;
4572 if (info
->omit_relative
&& !IS_ABSOLUTE_PATH (path
))
4575 if (info
->append_len
!= 0)
4577 len
= strlen (path
);
4578 memcpy (path
+ len
, info
->append
, info
->append_len
+ 1);
4581 if (!is_directory (path
, true))
4584 do_spec_1 (info
->option
, 1, NULL
);
4585 if (info
->separate_options
)
4586 do_spec_1 (" ", 0, NULL
);
4588 if (info
->append_len
== 0)
4590 len
= strlen (path
);
4591 save
= path
[len
- 1];
4592 if (IS_DIR_SEPARATOR (path
[len
- 1]))
4593 path
[len
- 1] = '\0';
4596 do_spec_1 (path
, 1, NULL
);
4597 do_spec_1 (" ", 0, NULL
);
4599 /* Must not damage the original path. */
4600 if (info
->append_len
== 0)
4601 path
[len
- 1] = save
;
4606 /* Create a temporary FILE with the contents of ARGV. Add @FILE to the
4610 create_at_file (char **argv
)
4612 char *temp_file
= make_temp_file ("");
4613 char *at_argument
= concat ("@", temp_file
, NULL
);
4614 FILE *f
= fopen (temp_file
, "w");
4618 fatal_error ("could not open temporary response file %s",
4621 status
= writeargv (argv
, f
);
4624 fatal_error ("could not write to temporary response file %s",
4627 status
= fclose (f
);
4630 fatal_error ("could not close temporary response file %s",
4633 store_arg (at_argument
, 0, 0);
4635 record_temp_file (temp_file
, !save_temps_flag
, !save_temps_flag
);
4638 /* True if we should compile INFILE. */
4641 compile_input_file_p (struct infile
*infile
)
4643 if ((!infile
->language
) || (infile
->language
[0] != '*'))
4644 if (infile
->incompiler
== input_file_compiler
)
4649 /* Process each member of VEC as a spec. */
4652 do_specs_vec (vec
<char_p
> vec
)
4657 FOR_EACH_VEC_ELT (vec
, ix
, opt
)
4659 do_spec_1 (opt
, 1, NULL
);
4660 /* Make each accumulated option a separate argument. */
4661 do_spec_1 (" ", 0, NULL
);
4665 /* Process the sub-spec SPEC as a portion of a larger spec.
4666 This is like processing a whole spec except that we do
4667 not initialize at the beginning and we do not supply a
4668 newline by default at the end.
4669 INSWITCH nonzero means don't process %-sequences in SPEC;
4670 in this case, % is treated as an ordinary character.
4671 This is used while substituting switches.
4672 INSWITCH nonzero also causes SPC not to terminate an argument.
4674 Value is zero unless a line was finished
4675 and the command on that line reported an error. */
4678 do_spec_1 (const char *spec
, int inswitch
, const char *soft_matched_part
)
4680 const char *p
= spec
;
4685 /* If it's an empty string argument to a switch, keep it as is. */
4686 if (inswitch
&& !*p
)
4690 /* If substituting a switch, treat all chars like letters.
4691 Otherwise, NL, SPC, TAB and % are special. */
4692 switch (inswitch
? 'a' : c
)
4697 if (argbuf
.length () > 0
4698 && !strcmp (argbuf
.last (), "|"))
4700 /* A `|' before the newline means use a pipe here,
4701 but only if -pipe was specified.
4702 Otherwise, execute now and don't pass the `|' as an arg. */
4705 input_from_pipe
= 1;
4712 set_collect_gcc_options ();
4714 if (argbuf
.length () > 0)
4720 /* Reinitialize for a new command, and for a new argument. */
4723 delete_this_arg
= 0;
4724 this_is_output_file
= 0;
4725 this_is_library_file
= 0;
4726 this_is_linker_script
= 0;
4727 input_from_pipe
= 0;
4734 obstack_1grow (&obstack
, c
);
4742 /* Reinitialize for a new argument. */
4743 delete_this_arg
= 0;
4744 this_is_output_file
= 0;
4745 this_is_library_file
= 0;
4746 this_is_linker_script
= 0;
4753 fatal_error ("spec %qs invalid", spec
);
4756 if (save_temps_length
)
4757 obstack_grow (&obstack
, save_temps_prefix
, save_temps_length
);
4759 obstack_grow (&obstack
, input_basename
, basename_length
);
4760 if (compare_debug
< 0)
4761 obstack_grow (&obstack
, ".gk", 3);
4766 if (save_temps_length
)
4767 obstack_grow (&obstack
, save_temps_prefix
, save_temps_length
);
4769 obstack_grow (&obstack
, input_basename
, suffixed_basename_length
);
4770 if (compare_debug
< 0)
4771 obstack_grow (&obstack
, ".gk", 3);
4776 delete_this_arg
= 2;
4779 /* Dump out the directories specified with LIBRARY_PATH,
4780 followed by the absolute directories
4781 that we search for startfiles. */
4784 struct spec_path_info info
;
4787 info
.append_len
= 0;
4788 #ifdef RELATIVE_PREFIX_NOT_LINKDIR
4789 /* Used on systems which record the specified -L dirs
4790 and use them to search for dynamic linking.
4791 Relative directories always come from -B,
4792 and it is better not to use them for searching
4793 at run time. In particular, stage1 loses. */
4794 info
.omit_relative
= true;
4796 info
.omit_relative
= false;
4798 info
.separate_options
= false;
4800 for_each_path (&startfile_prefixes
, true, 0, spec_path
, &info
);
4805 /* %efoo means report an error with `foo' as error message
4806 and don't execute any more commands for this file. */
4810 while (*p
!= 0 && *p
!= '\n')
4812 buf
= (char *) alloca (p
- q
+ 1);
4813 strncpy (buf
, q
, p
- q
);
4815 error ("%s", _(buf
));
4820 /* %nfoo means report a notice with `foo' on stderr. */
4824 while (*p
!= 0 && *p
!= '\n')
4826 buf
= (char *) alloca (p
- q
+ 1);
4827 strncpy (buf
, q
, p
- q
);
4829 inform (0, "%s", _(buf
));
4839 /* If save_temps_flag is off, and the HOST_BIT_BUCKET is
4840 defined, and it is not a directory, and it is
4841 writable, use it. Otherwise, treat this like any
4842 other temporary file. */
4844 if ((!save_temps_flag
)
4845 && (stat (HOST_BIT_BUCKET
, &st
) == 0) && (!S_ISDIR (st
.st_mode
))
4846 && (access (HOST_BIT_BUCKET
, W_OK
) == 0))
4848 obstack_grow (&obstack
, HOST_BIT_BUCKET
,
4849 strlen (HOST_BIT_BUCKET
));
4850 delete_this_arg
= 0;
4855 goto create_temp_file
;
4859 obstack_1grow (&obstack
, '-');
4860 delete_this_arg
= 0;
4863 /* consume suffix */
4864 while (*p
== '.' || ISALNUM ((unsigned char) *p
))
4866 if (p
[0] == '%' && p
[1] == 'O')
4871 goto create_temp_file
;
4875 /* consume suffix */
4876 while (*p
== '.' || ISALNUM ((unsigned char) *p
))
4878 if (p
[0] == '%' && p
[1] == 'O')
4883 goto create_temp_file
;
4889 struct temp_name
*t
;
4891 const char *suffix
= p
;
4892 char *saved_suffix
= NULL
;
4894 while (*p
== '.' || ISALNUM ((unsigned char) *p
))
4896 suffix_length
= p
- suffix
;
4897 if (p
[0] == '%' && p
[1] == 'O')
4900 /* We don't support extra suffix characters after %O. */
4901 if (*p
== '.' || ISALNUM ((unsigned char) *p
))
4902 fatal_error ("spec %qs has invalid %<%%0%c%>", spec
, *p
);
4903 if (suffix_length
== 0)
4904 suffix
= TARGET_OBJECT_SUFFIX
;
4908 = XNEWVEC (char, suffix_length
4909 + strlen (TARGET_OBJECT_SUFFIX
) + 1);
4910 strncpy (saved_suffix
, suffix
, suffix_length
);
4911 strcpy (saved_suffix
+ suffix_length
,
4912 TARGET_OBJECT_SUFFIX
);
4914 suffix_length
+= strlen (TARGET_OBJECT_SUFFIX
);
4917 if (compare_debug
< 0)
4919 suffix
= concat (".gk", suffix
, NULL
);
4923 /* If -save-temps=obj and -o were specified, use that for the
4925 if (save_temps_length
)
4928 temp_filename_length
4929 = save_temps_length
+ suffix_length
+ 1;
4930 tmp
= (char *) alloca (temp_filename_length
);
4931 memcpy (tmp
, save_temps_prefix
, save_temps_length
);
4932 memcpy (tmp
+ save_temps_length
, suffix
, suffix_length
);
4933 tmp
[save_temps_length
+ suffix_length
] = '\0';
4934 temp_filename
= save_string (tmp
, save_temps_length
4936 obstack_grow (&obstack
, temp_filename
,
4937 temp_filename_length
);
4939 delete_this_arg
= 0;
4943 /* If the gcc_input_filename has the same suffix specified
4944 for the %g, %u, or %U, and -save-temps is specified,
4945 we could end up using that file as an intermediate
4946 thus clobbering the user's source file (.e.g.,
4947 gcc -save-temps foo.s would clobber foo.s with the
4948 output of cpp0). So check for this condition and
4949 generate a temp file as the intermediate. */
4951 if (save_temps_flag
)
4954 temp_filename_length
= basename_length
+ suffix_length
+ 1;
4955 tmp
= (char *) alloca (temp_filename_length
);
4956 memcpy (tmp
, input_basename
, basename_length
);
4957 memcpy (tmp
+ basename_length
, suffix
, suffix_length
);
4958 tmp
[basename_length
+ suffix_length
] = '\0';
4959 temp_filename
= tmp
;
4961 if (filename_cmp (temp_filename
, gcc_input_filename
) != 0)
4963 #ifndef HOST_LACKS_INODE_NUMBERS
4964 struct stat st_temp
;
4966 /* Note, set_input() resets input_stat_set to 0. */
4967 if (input_stat_set
== 0)
4969 input_stat_set
= stat (gcc_input_filename
,
4971 if (input_stat_set
>= 0)
4975 /* If we have the stat for the gcc_input_filename
4976 and we can do the stat for the temp_filename
4977 then the they could still refer to the same
4978 file if st_dev/st_ino's are the same. */
4979 if (input_stat_set
!= 1
4980 || stat (temp_filename
, &st_temp
) < 0
4981 || input_stat
.st_dev
!= st_temp
.st_dev
4982 || input_stat
.st_ino
!= st_temp
.st_ino
)
4984 /* Just compare canonical pathnames. */
4985 char* input_realname
= lrealpath (gcc_input_filename
);
4986 char* temp_realname
= lrealpath (temp_filename
);
4987 bool files_differ
= filename_cmp (input_realname
, temp_realname
);
4988 free (input_realname
);
4989 free (temp_realname
);
4993 temp_filename
= save_string (temp_filename
,
4994 temp_filename_length
+ 1);
4995 obstack_grow (&obstack
, temp_filename
,
4996 temp_filename_length
);
4998 delete_this_arg
= 0;
5004 /* See if we already have an association of %g/%u/%U and
5006 for (t
= temp_names
; t
; t
= t
->next
)
5007 if (t
->length
== suffix_length
5008 && strncmp (t
->suffix
, suffix
, suffix_length
) == 0
5009 && t
->unique
== (c
== 'u' || c
== 'U' || c
== 'j'))
5012 /* Make a new association if needed. %u and %j
5014 if (t
== 0 || c
== 'u' || c
== 'j')
5018 t
= XNEW (struct temp_name
);
5019 t
->next
= temp_names
;
5022 t
->length
= suffix_length
;
5025 t
->suffix
= saved_suffix
;
5026 saved_suffix
= NULL
;
5029 t
->suffix
= save_string (suffix
, suffix_length
);
5030 t
->unique
= (c
== 'u' || c
== 'U' || c
== 'j');
5031 temp_filename
= make_temp_file (t
->suffix
);
5032 temp_filename_length
= strlen (temp_filename
);
5033 t
->filename
= temp_filename
;
5034 t
->filename_length
= temp_filename_length
;
5037 free (saved_suffix
);
5039 obstack_grow (&obstack
, t
->filename
, t
->filename_length
);
5040 delete_this_arg
= 1;
5048 if (at_file_supplied
)
5050 /* We are going to expand `%i' to `@FILE', where FILE
5051 is a newly-created temporary filename. The filenames
5052 that would usually be expanded in place of %o will be
5053 written to the temporary file. */
5058 for (i
= 0; i
< n_infiles
; i
++)
5059 if (compile_input_file_p (&infiles
[i
]))
5062 argv
= (char **) alloca (sizeof (char *) * (n_files
+ 1));
5064 /* Copy the strings over. */
5065 for (i
= 0, j
= 0; i
< n_infiles
; i
++)
5066 if (compile_input_file_p (&infiles
[i
]))
5068 argv
[j
] = CONST_CAST (char *, infiles
[i
].name
);
5069 infiles
[i
].compiled
= true;
5074 create_at_file (argv
);
5077 for (i
= 0; (int) i
< n_infiles
; i
++)
5078 if (compile_input_file_p (&infiles
[i
]))
5080 store_arg (infiles
[i
].name
, 0, 0);
5081 infiles
[i
].compiled
= true;
5086 obstack_grow (&obstack
, gcc_input_filename
,
5087 input_filename_length
);
5094 struct spec_path_info info
;
5098 do_spec_1 ("-imultilib", 1, NULL
);
5099 /* Make this a separate argument. */
5100 do_spec_1 (" ", 0, NULL
);
5101 do_spec_1 (multilib_dir
, 1, NULL
);
5102 do_spec_1 (" ", 0, NULL
);
5107 do_spec_1 ("-imultiarch", 1, NULL
);
5108 /* Make this a separate argument. */
5109 do_spec_1 (" ", 0, NULL
);
5110 do_spec_1 (multiarch_dir
, 1, NULL
);
5111 do_spec_1 (" ", 0, NULL
);
5114 if (gcc_exec_prefix
)
5116 do_spec_1 ("-iprefix", 1, NULL
);
5117 /* Make this a separate argument. */
5118 do_spec_1 (" ", 0, NULL
);
5119 do_spec_1 (gcc_exec_prefix
, 1, NULL
);
5120 do_spec_1 (" ", 0, NULL
);
5123 if (target_system_root_changed
||
5124 (target_system_root
&& target_sysroot_hdrs_suffix
))
5126 do_spec_1 ("-isysroot", 1, NULL
);
5127 /* Make this a separate argument. */
5128 do_spec_1 (" ", 0, NULL
);
5129 do_spec_1 (target_system_root
, 1, NULL
);
5130 if (target_sysroot_hdrs_suffix
)
5131 do_spec_1 (target_sysroot_hdrs_suffix
, 1, NULL
);
5132 do_spec_1 (" ", 0, NULL
);
5135 info
.option
= "-isystem";
5136 info
.append
= "include";
5137 info
.append_len
= strlen (info
.append
);
5138 info
.omit_relative
= false;
5139 info
.separate_options
= true;
5141 for_each_path (&include_prefixes
, false, info
.append_len
,
5144 info
.append
= "include-fixed";
5145 if (*sysroot_hdrs_suffix_spec
)
5146 info
.append
= concat (info
.append
, dir_separator_str
,
5147 multilib_dir
, NULL
);
5148 info
.append_len
= strlen (info
.append
);
5149 for_each_path (&include_prefixes
, false, info
.append_len
,
5156 int max
= n_infiles
;
5157 max
+= lang_specific_extra_outfiles
;
5159 if (HAVE_GNU_LD
&& at_file_supplied
)
5161 /* We are going to expand `%o' to `@FILE', where FILE
5162 is a newly-created temporary filename. The filenames
5163 that would usually be expanded in place of %o will be
5164 written to the temporary file. */
5169 /* Convert OUTFILES into a form suitable for writeargv. */
5171 /* Determine how many are non-NULL. */
5172 for (n_files
= 0, i
= 0; i
< max
; i
++)
5173 n_files
+= outfiles
[i
] != NULL
;
5175 argv
= (char **) alloca (sizeof (char *) * (n_files
+ 1));
5177 /* Copy the strings over. */
5178 for (i
= 0, j
= 0; i
< max
; i
++)
5181 argv
[j
] = CONST_CAST (char *, outfiles
[i
]);
5186 create_at_file (argv
);
5189 for (i
= 0; i
< max
; i
++)
5191 store_arg (outfiles
[i
], 0, 0);
5196 obstack_grow (&obstack
, TARGET_OBJECT_SUFFIX
, strlen (TARGET_OBJECT_SUFFIX
));
5201 this_is_library_file
= 1;
5205 this_is_linker_script
= 1;
5209 outfiles
[input_file_number
] = NULL
;
5213 this_is_output_file
= 1;
5218 unsigned int cur_index
= argbuf
.length ();
5219 /* Handle the {...} following the %W. */
5221 fatal_error ("spec %qs has invalid %<%%W%c%>", spec
, *p
);
5222 p
= handle_braces (p
+ 1);
5226 /* If any args were output, mark the last one for deletion
5228 if (argbuf
.length () != cur_index
)
5229 record_temp_file (argbuf
.last (), 0, 1);
5233 /* %x{OPTION} records OPTION for %X to output. */
5241 /* Skip past the option value and make a copy. */
5243 fatal_error ("spec %qs has invalid %<%%x%c%>", spec
, *p
);
5246 string
= save_string (p1
+ 1, p
- p1
- 2);
5248 /* See if we already recorded this option. */
5249 FOR_EACH_VEC_ELT (linker_options
, ix
, opt
)
5250 if (! strcmp (string
, opt
))
5256 /* This option is new; add it. */
5257 add_linker_option (string
, strlen (string
));
5262 /* Dump out the options accumulated previously using %x. */
5264 do_specs_vec (linker_options
);
5267 /* Dump out the options accumulated previously using -Wa,. */
5269 do_specs_vec (assembler_options
);
5272 /* Dump out the options accumulated previously using -Wp,. */
5274 do_specs_vec (preprocessor_options
);
5277 /* Here are digits and numbers that just process
5278 a certain constant string as a spec. */
5281 value
= do_spec_1 (cc1_spec
, 0, NULL
);
5287 value
= do_spec_1 (cc1plus_spec
, 0, NULL
);
5293 value
= do_spec_1 (asm_spec
, 0, NULL
);
5299 value
= do_spec_1 (asm_final_spec
, 0, NULL
);
5306 const char *const spec
5307 = (input_file_compiler
->cpp_spec
5308 ? input_file_compiler
->cpp_spec
5310 value
= do_spec_1 (spec
, 0, NULL
);
5317 value
= do_spec_1 (endfile_spec
, 0, NULL
);
5323 value
= do_spec_1 (link_spec
, 0, NULL
);
5329 value
= do_spec_1 (lib_spec
, 0, NULL
);
5335 if (multilib_os_dir
== NULL
)
5336 obstack_1grow (&obstack
, '.');
5338 obstack_grow (&obstack
, multilib_os_dir
,
5339 strlen (multilib_os_dir
));
5343 value
= do_spec_1 (libgcc_spec
, 0, NULL
);
5349 /* We assume there is a directory
5350 separator at the end of this string. */
5351 if (target_system_root
)
5353 obstack_grow (&obstack
, target_system_root
,
5354 strlen (target_system_root
));
5355 if (target_sysroot_suffix
)
5356 obstack_grow (&obstack
, target_sysroot_suffix
,
5357 strlen (target_sysroot_suffix
));
5362 value
= do_spec_1 (startfile_spec
, 0, NULL
);
5367 /* Here we define characters other than letters and digits. */
5370 p
= handle_braces (p
);
5376 p
= handle_spec_function (p
, NULL
);
5382 obstack_1grow (&obstack
, '%');
5389 while (p
[len
] && p
[len
] != ' ' && p
[len
] != '%')
5391 suffix_subst
= save_string (p
- 1, len
+ 1);
5396 /* Henceforth ignore the option(s) matching the pattern
5402 int have_wildcard
= 0;
5407 switch_option
= SWITCH_IGNORE
| SWITCH_KEEP_FOR_GCC
;
5409 switch_option
= SWITCH_IGNORE
;
5411 while (p
[len
] && p
[len
] != ' ' && p
[len
] != '\t')
5414 if (p
[len
-1] == '*')
5417 for (i
= 0; i
< n_switches
; i
++)
5418 if (!strncmp (switches
[i
].part1
, p
, len
- have_wildcard
)
5419 && (have_wildcard
|| switches
[i
].part1
[len
] == '\0'))
5421 switches
[i
].live_cond
|= switch_option
;
5422 /* User switch be validated from validate_all_switches.
5423 when the definition is seen from the spec file.
5424 If not defined anywhere, will be rejected. */
5425 if (switches
[i
].known
)
5426 switches
[i
].validated
= true;
5434 if (soft_matched_part
)
5436 if (soft_matched_part
[0])
5437 do_spec_1 (soft_matched_part
, 1, NULL
);
5438 /* Only insert a space after the substitution if it is at the
5439 end of the current sequence. So if:
5441 "%{foo=*:bar%*}%{foo=*:one%*two}"
5443 matches -foo=hello then it will produce:
5445 barhello onehellotwo
5447 if (*p
== 0 || *p
== '}')
5448 do_spec_1 (" ", 0, NULL
);
5451 /* Catch the case where a spec string contains something like
5452 '%{foo:%*}'. i.e. there is no * in the pattern on the left
5453 hand side of the :. */
5454 error ("spec failure: %<%%*%> has not been initialized by pattern match");
5457 /* Process a string found as the value of a spec given by name.
5458 This feature allows individual machine descriptions
5459 to add and use their own specs. */
5462 const char *name
= p
;
5463 struct spec_list
*sl
;
5466 /* The string after the S/P is the name of a spec that is to be
5468 while (*p
&& *p
!= ')')
5471 /* See if it's in the list. */
5472 for (len
= p
- name
, sl
= specs
; sl
; sl
= sl
->next
)
5473 if (sl
->name_len
== len
&& !strncmp (sl
->name
, name
, len
))
5475 name
= *(sl
->ptr_spec
);
5477 fnotice (stderr
, "Processing spec (%s), which is '%s'\n",
5485 value
= do_spec_1 (name
, 0, NULL
);
5490 /* Discard the closing paren. */
5497 error ("spec failure: unrecognized spec option %qc", c
);
5503 /* Backslash: treat next character as ordinary. */
5508 /* Ordinary character: put it into the current argument. */
5509 obstack_1grow (&obstack
, c
);
5513 /* End of string. If we are processing a spec function, we need to
5514 end any pending argument. */
5515 if (processing_spec_function
)
5521 /* Look up a spec function. */
5523 static const struct spec_function
*
5524 lookup_spec_function (const char *name
)
5526 const struct spec_function
*sf
;
5528 for (sf
= static_spec_functions
; sf
->name
!= NULL
; sf
++)
5529 if (strcmp (sf
->name
, name
) == 0)
5535 /* Evaluate a spec function. */
5538 eval_spec_function (const char *func
, const char *args
)
5540 const struct spec_function
*sf
;
5541 const char *funcval
;
5543 /* Saved spec processing context. */
5544 vec
<const_char_p
> save_argbuf
;
5547 int save_delete_this_arg
;
5548 int save_this_is_output_file
;
5549 int save_this_is_library_file
;
5550 int save_input_from_pipe
;
5551 int save_this_is_linker_script
;
5552 const char *save_suffix_subst
;
5554 int save_growing_size
;
5555 void *save_growing_value
= NULL
;
5557 sf
= lookup_spec_function (func
);
5559 fatal_error ("unknown spec function %qs", func
);
5561 /* Push the spec processing context. */
5562 save_argbuf
= argbuf
;
5564 save_arg_going
= arg_going
;
5565 save_delete_this_arg
= delete_this_arg
;
5566 save_this_is_output_file
= this_is_output_file
;
5567 save_this_is_library_file
= this_is_library_file
;
5568 save_this_is_linker_script
= this_is_linker_script
;
5569 save_input_from_pipe
= input_from_pipe
;
5570 save_suffix_subst
= suffix_subst
;
5572 /* If we have some object growing now, finalize it so the args and function
5573 eval proceed from a cleared context. This is needed to prevent the first
5574 constructed arg from mistakenly including the growing value. We'll push
5575 this value back on the obstack once the function evaluation is done, to
5576 restore a consistent processing context for our caller. This is fine as
5577 the address of growing objects isn't guaranteed to remain stable until
5578 they are finalized, and we expect this situation to be rare enough for
5579 the extra copy not to be an issue. */
5580 save_growing_size
= obstack_object_size (&obstack
);
5581 if (save_growing_size
> 0)
5582 save_growing_value
= obstack_finish (&obstack
);
5584 /* Create a new spec processing context, and build the function
5588 if (do_spec_2 (args
) < 0)
5589 fatal_error ("error in args to spec function %qs", func
);
5591 /* argbuf_index is an index for the next argument to be inserted, and
5592 so contains the count of the args already inserted. */
5594 funcval
= (*sf
->func
) (argbuf
.length (),
5597 /* Pop the spec processing context. */
5599 argbuf
= save_argbuf
;
5601 arg_going
= save_arg_going
;
5602 delete_this_arg
= save_delete_this_arg
;
5603 this_is_output_file
= save_this_is_output_file
;
5604 this_is_library_file
= save_this_is_library_file
;
5605 this_is_linker_script
= save_this_is_linker_script
;
5606 input_from_pipe
= save_input_from_pipe
;
5607 suffix_subst
= save_suffix_subst
;
5609 if (save_growing_size
> 0)
5610 obstack_grow (&obstack
, save_growing_value
, save_growing_size
);
5615 /* Handle a spec function call of the form:
5619 ARGS is processed as a spec in a separate context and split into an
5620 argument vector in the normal fashion. The function returns a string
5621 containing a spec which we then process in the caller's context, or
5622 NULL if no processing is required.
5624 If RETVAL_NONNULL is not NULL, then store a bool whether function
5625 returned non-NULL. */
5628 handle_spec_function (const char *p
, bool *retval_nonnull
)
5631 const char *endp
, *funcval
;
5634 processing_spec_function
++;
5636 /* Get the function name. */
5637 for (endp
= p
; *endp
!= '\0'; endp
++)
5639 if (*endp
== '(') /* ) */
5641 /* Only allow [A-Za-z0-9], -, and _ in function names. */
5642 if (!ISALNUM (*endp
) && !(*endp
== '-' || *endp
== '_'))
5643 fatal_error ("malformed spec function name");
5645 if (*endp
!= '(') /* ) */
5646 fatal_error ("no arguments for spec function");
5647 func
= save_string (p
, endp
- p
);
5650 /* Get the arguments. */
5651 for (count
= 0; *endp
!= '\0'; endp
++)
5660 else if (*endp
== '(') /* ) */
5665 fatal_error ("malformed spec function arguments");
5666 args
= save_string (p
, endp
- p
);
5669 /* p now points to just past the end of the spec function expression. */
5671 funcval
= eval_spec_function (func
, args
);
5672 if (funcval
!= NULL
&& do_spec_1 (funcval
, 0, NULL
) < 0)
5675 *retval_nonnull
= funcval
!= NULL
;
5680 processing_spec_function
--;
5685 /* Inline subroutine of handle_braces. Returns true if the current
5686 input suffix matches the atom bracketed by ATOM and END_ATOM. */
5688 input_suffix_matches (const char *atom
, const char *end_atom
)
5690 return (input_suffix
5691 && !strncmp (input_suffix
, atom
, end_atom
- atom
)
5692 && input_suffix
[end_atom
- atom
] == '\0');
5695 /* Subroutine of handle_braces. Returns true if the current
5696 input file's spec name matches the atom bracketed by ATOM and END_ATOM. */
5698 input_spec_matches (const char *atom
, const char *end_atom
)
5700 return (input_file_compiler
5701 && input_file_compiler
->suffix
5702 && input_file_compiler
->suffix
[0] != '\0'
5703 && !strncmp (input_file_compiler
->suffix
+ 1, atom
,
5705 && input_file_compiler
->suffix
[end_atom
- atom
+ 1] == '\0');
5708 /* Subroutine of handle_braces. Returns true if a switch
5709 matching the atom bracketed by ATOM and END_ATOM appeared on the
5712 switch_matches (const char *atom
, const char *end_atom
, int starred
)
5715 int len
= end_atom
- atom
;
5716 int plen
= starred
? len
: -1;
5718 for (i
= 0; i
< n_switches
; i
++)
5719 if (!strncmp (switches
[i
].part1
, atom
, len
)
5720 && (starred
|| switches
[i
].part1
[len
] == '\0')
5721 && check_live_switch (i
, plen
))
5724 /* Check if a switch with separated form matching the atom.
5725 We check -D and -U switches. */
5726 else if (switches
[i
].args
!= 0)
5728 if ((*switches
[i
].part1
== 'D' || *switches
[i
].part1
== 'U')
5729 && *switches
[i
].part1
== atom
[0])
5731 if (!strncmp (switches
[i
].args
[0], &atom
[1], len
- 1)
5732 && (starred
|| (switches
[i
].part1
[1] == '\0'
5733 && switches
[i
].args
[0][len
- 1] == '\0'))
5734 && check_live_switch (i
, (starred
? 1 : -1)))
5742 /* Inline subroutine of handle_braces. Mark all of the switches which
5743 match ATOM (extends to END_ATOM; STARRED indicates whether there
5744 was a star after the atom) for later processing. */
5746 mark_matching_switches (const char *atom
, const char *end_atom
, int starred
)
5749 int len
= end_atom
- atom
;
5750 int plen
= starred
? len
: -1;
5752 for (i
= 0; i
< n_switches
; i
++)
5753 if (!strncmp (switches
[i
].part1
, atom
, len
)
5754 && (starred
|| switches
[i
].part1
[len
] == '\0')
5755 && check_live_switch (i
, plen
))
5756 switches
[i
].ordering
= 1;
5759 /* Inline subroutine of handle_braces. Process all the currently
5760 marked switches through give_switch, and clear the marks. */
5762 process_marked_switches (void)
5766 for (i
= 0; i
< n_switches
; i
++)
5767 if (switches
[i
].ordering
== 1)
5769 switches
[i
].ordering
= 0;
5774 /* Handle a %{ ... } construct. P points just inside the leading {.
5775 Returns a pointer one past the end of the brace block, or 0
5776 if we call do_spec_1 and that returns -1. */
5779 handle_braces (const char *p
)
5781 const char *atom
, *end_atom
;
5782 const char *d_atom
= NULL
, *d_end_atom
= NULL
;
5783 const char *orig
= p
;
5791 bool a_must_be_last
= false;
5792 bool ordered_set
= false;
5793 bool disjunct_set
= false;
5794 bool disj_matched
= false;
5795 bool disj_starred
= true;
5796 bool n_way_choice
= false;
5797 bool n_way_matched
= false;
5799 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
5806 /* Scan one "atom" (S in the description above of %{}, possibly
5807 with '!', '.', '@', ',', or '*' modifiers). */
5809 a_is_suffix
= false;
5810 a_is_starred
= false;
5811 a_is_negated
= false;
5812 a_is_spectype
= false;
5816 p
++, a_is_negated
= true;
5819 if (*p
== '%' && p
[1] == ':')
5823 p
= handle_spec_function (p
+ 2, &a_matched
);
5828 p
++, a_is_suffix
= true;
5830 p
++, a_is_spectype
= true;
5833 while (ISIDNUM (*p
) || *p
== '-' || *p
== '+' || *p
== '='
5834 || *p
== ',' || *p
== '.' || *p
== '@')
5839 p
++, a_is_starred
= 1;
5846 /* Substitute the switch(es) indicated by the current atom. */
5848 if (disjunct_set
|| n_way_choice
|| a_is_negated
|| a_is_suffix
5849 || a_is_spectype
|| atom
== end_atom
)
5852 mark_matching_switches (atom
, end_atom
, a_is_starred
);
5855 process_marked_switches ();
5859 /* Substitute some text if the current atom appears as a switch
5861 disjunct_set
= true;
5865 if (atom
&& atom
== end_atom
)
5867 if (!n_way_choice
|| disj_matched
|| *p
== '|'
5868 || a_is_negated
|| a_is_suffix
|| a_is_spectype
5872 /* An empty term may appear as the last choice of an
5873 N-way choice set; it means "otherwise". */
5874 a_must_be_last
= true;
5875 disj_matched
= !n_way_matched
;
5876 disj_starred
= false;
5880 if ((a_is_suffix
|| a_is_spectype
) && a_is_starred
)
5884 disj_starred
= false;
5886 /* Don't bother testing this atom if we already have a
5888 if (!disj_matched
&& !n_way_matched
)
5891 /* a_matched is already set by handle_spec_function. */;
5892 else if (a_is_suffix
)
5893 a_matched
= input_suffix_matches (atom
, end_atom
);
5894 else if (a_is_spectype
)
5895 a_matched
= input_spec_matches (atom
, end_atom
);
5897 a_matched
= switch_matches (atom
, end_atom
, a_is_starred
);
5899 if (a_matched
!= a_is_negated
)
5901 disj_matched
= true;
5903 d_end_atom
= end_atom
;
5910 /* Found the body, that is, the text to substitute if the
5911 current disjunction matches. */
5912 p
= process_brace_body (p
+ 1, d_atom
, d_end_atom
, disj_starred
,
5913 disj_matched
&& !n_way_matched
);
5917 /* If we have an N-way choice, reset state for the next
5921 n_way_choice
= true;
5922 n_way_matched
|= disj_matched
;
5923 disj_matched
= false;
5924 disj_starred
= true;
5925 d_atom
= d_end_atom
= NULL
;
5934 while (*p
++ != '}');
5939 fatal_error ("braced spec %qs is invalid at %qc", orig
, *p
);
5944 /* Subroutine of handle_braces. Scan and process a brace substitution body
5945 (X in the description of %{} syntax). P points one past the colon;
5946 ATOM and END_ATOM bracket the first atom which was found to be true
5947 (present) in the current disjunction; STARRED indicates whether all
5948 the atoms in the current disjunction were starred (for syntax validation);
5949 MATCHED indicates whether the disjunction matched or not, and therefore
5950 whether or not the body is to be processed through do_spec_1 or just
5951 skipped. Returns a pointer to the closing } or ;, or 0 if do_spec_1
5955 process_brace_body (const char *p
, const char *atom
, const char *end_atom
,
5956 int starred
, int matched
)
5958 const char *body
, *end_body
;
5959 unsigned int nesting_level
;
5960 bool have_subst
= false;
5962 /* Locate the closing } or ;, honoring nested braces.
5963 Trim trailing whitespace. */
5972 if (!--nesting_level
)
5975 else if (*p
== ';' && nesting_level
== 1)
5977 else if (*p
== '%' && p
[1] == '*' && nesting_level
== 1)
5979 else if (*p
== '\0')
5985 while (end_body
[-1] == ' ' || end_body
[-1] == '\t')
5988 if (have_subst
&& !starred
)
5993 /* Copy the substitution body to permanent storage and execute it.
5994 If have_subst is false, this is a simple matter of running the
5995 body through do_spec_1... */
5996 char *string
= save_string (body
, end_body
- body
);
5999 if (do_spec_1 (string
, 0, NULL
) < 0)
6004 /* ... but if have_subst is true, we have to process the
6005 body once for each matching switch, with %* set to the
6006 variant part of the switch. */
6007 unsigned int hard_match_len
= end_atom
- atom
;
6010 for (i
= 0; i
< n_switches
; i
++)
6011 if (!strncmp (switches
[i
].part1
, atom
, hard_match_len
)
6012 && check_live_switch (i
, hard_match_len
))
6014 if (do_spec_1 (string
, 0,
6015 &switches
[i
].part1
[hard_match_len
]) < 0)
6017 /* Pass any arguments this switch has. */
6019 suffix_subst
= NULL
;
6027 fatal_error ("braced spec body %qs is invalid", body
);
6030 /* Return 0 iff switch number SWITCHNUM is obsoleted by a later switch
6031 on the command line. PREFIX_LENGTH is the length of XXX in an {XXX*}
6032 spec, or -1 if either exact match or %* is used.
6034 A -O switch is obsoleted by a later -O switch. A -f, -g, -m, or -W switch
6035 whose value does not begin with "no-" is obsoleted by the same value
6036 with the "no-", similarly for a switch with the "no-" prefix. */
6039 check_live_switch (int switchnum
, int prefix_length
)
6041 const char *name
= switches
[switchnum
].part1
;
6044 /* If we already processed this switch and determined if it was
6045 live or not, return our past determination. */
6046 if (switches
[switchnum
].live_cond
!= 0)
6047 return ((switches
[switchnum
].live_cond
& SWITCH_LIVE
) != 0
6048 && (switches
[switchnum
].live_cond
& SWITCH_FALSE
) == 0
6049 && (switches
[switchnum
].live_cond
& SWITCH_IGNORE_PERMANENTLY
)
6052 /* In the common case of {<at-most-one-letter>*}, a negating
6053 switch would always match, so ignore that case. We will just
6054 send the conflicting switches to the compiler phase. */
6055 if (prefix_length
>= 0 && prefix_length
<= 1)
6058 /* Now search for duplicate in a manner that depends on the name. */
6062 for (i
= switchnum
+ 1; i
< n_switches
; i
++)
6063 if (switches
[i
].part1
[0] == 'O')
6065 switches
[switchnum
].validated
= true;
6066 switches
[switchnum
].live_cond
= SWITCH_FALSE
;
6071 case 'W': case 'f': case 'm': case 'g':
6072 if (! strncmp (name
+ 1, "no-", 3))
6074 /* We have Xno-YYY, search for XYYY. */
6075 for (i
= switchnum
+ 1; i
< n_switches
; i
++)
6076 if (switches
[i
].part1
[0] == name
[0]
6077 && ! strcmp (&switches
[i
].part1
[1], &name
[4]))
6079 /* --specs are validated with the validate_switches mechanism. */
6080 if (switches
[switchnum
].known
)
6081 switches
[switchnum
].validated
= true;
6082 switches
[switchnum
].live_cond
= SWITCH_FALSE
;
6088 /* We have XYYY, search for Xno-YYY. */
6089 for (i
= switchnum
+ 1; i
< n_switches
; i
++)
6090 if (switches
[i
].part1
[0] == name
[0]
6091 && switches
[i
].part1
[1] == 'n'
6092 && switches
[i
].part1
[2] == 'o'
6093 && switches
[i
].part1
[3] == '-'
6094 && !strcmp (&switches
[i
].part1
[4], &name
[1]))
6096 /* --specs are validated with the validate_switches mechanism. */
6097 if (switches
[switchnum
].known
)
6098 switches
[switchnum
].validated
= true;
6099 switches
[switchnum
].live_cond
= SWITCH_FALSE
;
6106 /* Otherwise the switch is live. */
6107 switches
[switchnum
].live_cond
|= SWITCH_LIVE
;
6111 /* Pass a switch to the current accumulating command
6112 in the same form that we received it.
6113 SWITCHNUM identifies the switch; it is an index into
6114 the vector of switches gcc received, which is `switches'.
6115 This cannot fail since it never finishes a command line.
6117 If OMIT_FIRST_WORD is nonzero, then we omit .part1 of the argument. */
6120 give_switch (int switchnum
, int omit_first_word
)
6122 if ((switches
[switchnum
].live_cond
& SWITCH_IGNORE
) != 0)
6125 if (!omit_first_word
)
6127 do_spec_1 ("-", 0, NULL
);
6128 do_spec_1 (switches
[switchnum
].part1
, 1, NULL
);
6131 if (switches
[switchnum
].args
!= 0)
6134 for (p
= switches
[switchnum
].args
; *p
; p
++)
6136 const char *arg
= *p
;
6138 do_spec_1 (" ", 0, NULL
);
6141 unsigned length
= strlen (arg
);
6144 while (length
-- && !IS_DIR_SEPARATOR (arg
[length
]))
6145 if (arg
[length
] == '.')
6147 (CONST_CAST (char *, arg
))[length
] = 0;
6151 do_spec_1 (arg
, 1, NULL
);
6153 (CONST_CAST (char *, arg
))[length
] = '.';
6154 do_spec_1 (suffix_subst
, 1, NULL
);
6157 do_spec_1 (arg
, 1, NULL
);
6161 do_spec_1 (" ", 0, NULL
);
6162 switches
[switchnum
].validated
= true;
6165 /* Search for a file named NAME trying various prefixes including the
6166 user's -B prefix and some standard ones.
6167 Return the absolute file name found. If nothing is found, return NAME. */
6170 find_file (const char *name
)
6172 char *newname
= find_a_file (&startfile_prefixes
, name
, R_OK
, true);
6173 return newname
? newname
: name
;
6176 /* Determine whether a directory exists. If LINKER, return 0 for
6177 certain fixed names not needed by the linker. */
6180 is_directory (const char *path1
, bool linker
)
6187 /* Ensure the string ends with "/.". The resulting path will be a
6188 directory even if the given path is a symbolic link. */
6189 len1
= strlen (path1
);
6190 path
= (char *) alloca (3 + len1
);
6191 memcpy (path
, path1
, len1
);
6193 if (!IS_DIR_SEPARATOR (cp
[-1]))
6194 *cp
++ = DIR_SEPARATOR
;
6198 /* Exclude directories that the linker is known to search. */
6200 && IS_DIR_SEPARATOR (path
[0])
6202 && filename_ncmp (path
+ 1, "lib", 3) == 0)
6204 && filename_ncmp (path
+ 1, "usr", 3) == 0
6205 && IS_DIR_SEPARATOR (path
[4])
6206 && filename_ncmp (path
+ 5, "lib", 3) == 0)))
6209 return (stat (path
, &st
) >= 0 && S_ISDIR (st
.st_mode
));
6212 /* Set up the various global variables to indicate that we're processing
6213 the input file named FILENAME. */
6216 set_input (const char *filename
)
6220 gcc_input_filename
= filename
;
6221 input_filename_length
= strlen (gcc_input_filename
);
6222 input_basename
= lbasename (gcc_input_filename
);
6224 /* Find a suffix starting with the last period,
6225 and set basename_length to exclude that suffix. */
6226 basename_length
= strlen (input_basename
);
6227 suffixed_basename_length
= basename_length
;
6228 p
= input_basename
+ basename_length
;
6229 while (p
!= input_basename
&& *p
!= '.')
6231 if (*p
== '.' && p
!= input_basename
)
6233 basename_length
= p
- input_basename
;
6234 input_suffix
= p
+ 1;
6239 /* If a spec for 'g', 'u', or 'U' is seen with -save-temps then
6240 we will need to do a stat on the gcc_input_filename. The
6241 INPUT_STAT_SET signals that the stat is needed. */
6245 /* On fatal signals, delete all the temporary files. */
6248 fatal_signal (int signum
)
6250 signal (signum
, SIG_DFL
);
6251 delete_failure_queue ();
6252 delete_temp_files ();
6253 /* Get the same signal again, this time not handled,
6254 so its normal effect occurs. */
6255 kill (getpid (), signum
);
6258 /* Compare the contents of the two files named CMPFILE[0] and
6259 CMPFILE[1]. Return zero if they're identical, nonzero
6263 compare_files (char *cmpfile
[])
6266 FILE *temp
[2] = { NULL
, NULL
};
6272 void *map
[2] = { NULL
, NULL
};
6274 for (i
= 0; i
< 2; i
++)
6278 if (stat (cmpfile
[i
], &st
) < 0 || !S_ISREG (st
.st_mode
))
6280 error ("%s: could not determine length of compare-debug file %s",
6281 gcc_input_filename
, cmpfile
[i
]);
6286 length
[i
] = st
.st_size
;
6289 if (!ret
&& length
[0] != length
[1])
6291 error ("%s: -fcompare-debug failure (length)", gcc_input_filename
);
6296 for (i
= 0; i
< 2; i
++)
6298 int fd
= open (cmpfile
[i
], O_RDONLY
);
6301 error ("%s: could not open compare-debug file %s",
6302 gcc_input_filename
, cmpfile
[i
]);
6307 map
[i
] = mmap (NULL
, length
[i
], PROT_READ
, MAP_PRIVATE
, fd
, 0);
6310 if (map
[i
] == (void *) MAP_FAILED
)
6319 if (memcmp (map
[0], map
[1], length
[0]) != 0)
6321 error ("%s: -fcompare-debug failure", gcc_input_filename
);
6326 for (i
= 0; i
< 2; i
++)
6328 munmap ((caddr_t
) map
[i
], length
[i
]);
6337 for (i
= 0; i
< 2; i
++)
6339 temp
[i
] = fopen (cmpfile
[i
], "r");
6342 error ("%s: could not open compare-debug file %s",
6343 gcc_input_filename
, cmpfile
[i
]);
6349 if (!ret
&& temp
[0] && temp
[1])
6353 c0
= fgetc (temp
[0]);
6354 c1
= fgetc (temp
[1]);
6358 error ("%s: -fcompare-debug failure",
6359 gcc_input_filename
);
6368 for (i
= 1; i
>= 0; i
--)
6377 extern int main (int, char **);
6380 main (int argc
, char **argv
)
6384 int linker_was_run
= 0;
6385 int lang_n_infiles
= 0;
6386 int num_linker_inputs
= 0;
6387 char *explicit_link_files
;
6389 char *lto_wrapper_file
;
6391 struct user_specs
*uptr
;
6392 char **old_argv
= argv
;
6393 struct cl_decoded_option
*decoded_options
;
6394 unsigned int decoded_options_count
;
6396 p
= argv
[0] + strlen (argv
[0]);
6397 while (p
!= argv
[0] && !IS_DIR_SEPARATOR (p
[-1]))
6401 xmalloc_set_program_name (progname
);
6403 expandargv (&argc
, &argv
);
6405 /* Determine if any expansions were made. */
6406 if (argv
!= old_argv
)
6407 at_file_supplied
= true;
6409 /* Register the language-independent parameters. */
6410 global_init_params ();
6413 init_options_struct (&global_options
, &global_options_set
);
6415 decode_cmdline_options_to_array (argc
, CONST_CAST2 (const char **, char **,
6418 &decoded_options
, &decoded_options_count
);
6420 /* Unlock the stdio streams. */
6421 unlock_std_streams ();
6423 gcc_init_libintl ();
6425 diagnostic_initialize (global_dc
, 0);
6427 #ifdef GCC_DRIVER_HOST_INITIALIZATION
6428 /* Perform host dependent initialization when needed. */
6429 GCC_DRIVER_HOST_INITIALIZATION
;
6432 if (atexit (delete_temp_files
) != 0)
6433 fatal_error ("atexit failed");
6435 if (signal (SIGINT
, SIG_IGN
) != SIG_IGN
)
6436 signal (SIGINT
, fatal_signal
);
6438 if (signal (SIGHUP
, SIG_IGN
) != SIG_IGN
)
6439 signal (SIGHUP
, fatal_signal
);
6441 if (signal (SIGTERM
, SIG_IGN
) != SIG_IGN
)
6442 signal (SIGTERM
, fatal_signal
);
6444 if (signal (SIGPIPE
, SIG_IGN
) != SIG_IGN
)
6445 signal (SIGPIPE
, fatal_signal
);
6448 /* We *MUST* set SIGCHLD to SIG_DFL so that the wait4() call will
6449 receive the signal. A different setting is inheritable */
6450 signal (SIGCHLD
, SIG_DFL
);
6453 /* Parsing and gimplification sometimes need quite large stack.
6454 Increase stack size limits if possible. */
6455 stack_limit_increase (64 * 1024 * 1024);
6457 /* Allocate the argument vector. */
6460 obstack_init (&obstack
);
6462 /* Build multilib_select, et. al from the separate lines that make up each
6463 multilib selection. */
6465 const char *const *q
= multilib_raw
;
6468 obstack_init (&multilib_obstack
);
6469 while ((p
= *q
++) != (char *) 0)
6470 obstack_grow (&multilib_obstack
, p
, strlen (p
));
6472 obstack_1grow (&multilib_obstack
, 0);
6473 multilib_select
= XOBFINISH (&multilib_obstack
, const char *);
6475 q
= multilib_matches_raw
;
6476 while ((p
= *q
++) != (char *) 0)
6477 obstack_grow (&multilib_obstack
, p
, strlen (p
));
6479 obstack_1grow (&multilib_obstack
, 0);
6480 multilib_matches
= XOBFINISH (&multilib_obstack
, const char *);
6482 q
= multilib_exclusions_raw
;
6483 while ((p
= *q
++) != (char *) 0)
6484 obstack_grow (&multilib_obstack
, p
, strlen (p
));
6486 obstack_1grow (&multilib_obstack
, 0);
6487 multilib_exclusions
= XOBFINISH (&multilib_obstack
, const char *);
6489 q
= multilib_reuse_raw
;
6490 while ((p
= *q
++) != (char *) 0)
6491 obstack_grow (&multilib_obstack
, p
, strlen (p
));
6493 obstack_1grow (&multilib_obstack
, 0);
6494 multilib_reuse
= XOBFINISH (&multilib_obstack
, const char *);
6497 for (i
= 0; i
< ARRAY_SIZE (multilib_defaults_raw
); i
++)
6500 obstack_1grow (&multilib_obstack
, ' ');
6501 obstack_grow (&multilib_obstack
,
6502 multilib_defaults_raw
[i
],
6503 strlen (multilib_defaults_raw
[i
]));
6507 obstack_1grow (&multilib_obstack
, 0);
6508 multilib_defaults
= XOBFINISH (&multilib_obstack
, const char *);
6511 #ifdef INIT_ENVIRONMENT
6512 /* Set up any other necessary machine specific environment variables. */
6513 xputenv (INIT_ENVIRONMENT
);
6516 /* Make a table of what switches there are (switches, n_switches).
6517 Make a table of specified input files (infiles, n_infiles).
6518 Decode switches that are handled locally. */
6520 process_command (decoded_options_count
, decoded_options
);
6522 /* Initialize the vector of specs to just the default.
6523 This means one element containing 0s, as a terminator. */
6525 compilers
= XNEWVAR (struct compiler
, sizeof default_compilers
);
6526 memcpy (compilers
, default_compilers
, sizeof default_compilers
);
6527 n_compilers
= n_default_compilers
;
6529 /* Read specs from a file if there is one. */
6531 machine_suffix
= concat (spec_host_machine
, dir_separator_str
, spec_version
,
6532 accel_dir_suffix
, dir_separator_str
, NULL
);
6533 just_machine_suffix
= concat (spec_machine
, dir_separator_str
, NULL
);
6535 specs_file
= find_a_file (&startfile_prefixes
, "specs", R_OK
, true);
6536 /* Read the specs file unless it is a default one. */
6537 if (specs_file
!= 0 && strcmp (specs_file
, "specs"))
6538 read_specs (specs_file
, true, false);
6542 #ifndef ACCEL_COMPILER
6543 /* We need to check standard_exec_prefix/just_machine_suffix/specs
6544 for any override of as, ld and libraries. */
6545 specs_file
= (char *) alloca (strlen (standard_exec_prefix
)
6546 + strlen (just_machine_suffix
) + sizeof ("specs"));
6547 strcpy (specs_file
, standard_exec_prefix
);
6548 strcat (specs_file
, just_machine_suffix
);
6549 strcat (specs_file
, "specs");
6550 if (access (specs_file
, R_OK
) == 0)
6551 read_specs (specs_file
, true, false);
6554 /* Process any configure-time defaults specified for the command line
6555 options, via OPTION_DEFAULT_SPECS. */
6556 for (i
= 0; i
< ARRAY_SIZE (option_default_specs
); i
++)
6557 do_option_spec (option_default_specs
[i
].name
,
6558 option_default_specs
[i
].spec
);
6560 /* Process DRIVER_SELF_SPECS, adding any new options to the end
6561 of the command line. */
6563 for (i
= 0; i
< ARRAY_SIZE (driver_self_specs
); i
++)
6564 do_self_spec (driver_self_specs
[i
]);
6566 /* If not cross-compiling, look for executables in the standard
6568 if (*cross_compile
== '0')
6570 if (*md_exec_prefix
)
6572 add_prefix (&exec_prefixes
, md_exec_prefix
, "GCC",
6573 PREFIX_PRIORITY_LAST
, 0, 0);
6577 /* Process sysroot_suffix_spec. */
6578 if (*sysroot_suffix_spec
!= 0
6579 && !no_sysroot_suffix
6580 && do_spec_2 (sysroot_suffix_spec
) == 0)
6582 if (argbuf
.length () > 1)
6583 error ("spec failure: more than one arg to SYSROOT_SUFFIX_SPEC");
6584 else if (argbuf
.length () == 1)
6585 target_sysroot_suffix
= xstrdup (argbuf
.last ());
6588 #ifdef HAVE_LD_SYSROOT
6589 /* Pass the --sysroot option to the linker, if it supports that. If
6590 there is a sysroot_suffix_spec, it has already been processed by
6591 this point, so target_system_root really is the system root we
6593 if (target_system_root
)
6595 obstack_grow (&obstack
, "%(sysroot_spec) ", strlen ("%(sysroot_spec) "));
6596 obstack_grow0 (&obstack
, link_spec
, strlen (link_spec
));
6597 set_spec ("link", XOBFINISH (&obstack
, const char *), false);
6601 /* Process sysroot_hdrs_suffix_spec. */
6602 if (*sysroot_hdrs_suffix_spec
!= 0
6603 && !no_sysroot_suffix
6604 && do_spec_2 (sysroot_hdrs_suffix_spec
) == 0)
6606 if (argbuf
.length () > 1)
6607 error ("spec failure: more than one arg to SYSROOT_HEADERS_SUFFIX_SPEC");
6608 else if (argbuf
.length () == 1)
6609 target_sysroot_hdrs_suffix
= xstrdup (argbuf
.last ());
6612 /* Look for startfiles in the standard places. */
6613 if (*startfile_prefix_spec
!= 0
6614 && do_spec_2 (startfile_prefix_spec
) == 0
6615 && do_spec_1 (" ", 0, NULL
) == 0)
6619 FOR_EACH_VEC_ELT (argbuf
, ndx
, arg
)
6620 add_sysrooted_prefix (&startfile_prefixes
, arg
, "BINUTILS",
6621 PREFIX_PRIORITY_LAST
, 0, 1);
6623 /* We should eventually get rid of all these and stick to
6624 startfile_prefix_spec exclusively. */
6625 else if (*cross_compile
== '0' || target_system_root
)
6627 if (*md_startfile_prefix
)
6628 add_sysrooted_prefix (&startfile_prefixes
, md_startfile_prefix
,
6629 "GCC", PREFIX_PRIORITY_LAST
, 0, 1);
6631 if (*md_startfile_prefix_1
)
6632 add_sysrooted_prefix (&startfile_prefixes
, md_startfile_prefix_1
,
6633 "GCC", PREFIX_PRIORITY_LAST
, 0, 1);
6635 /* If standard_startfile_prefix is relative, base it on
6636 standard_exec_prefix. This lets us move the installed tree
6637 as a unit. If GCC_EXEC_PREFIX is defined, base
6638 standard_startfile_prefix on that as well.
6640 If the prefix is relative, only search it for native compilers;
6641 otherwise we will search a directory containing host libraries. */
6642 if (IS_ABSOLUTE_PATH (standard_startfile_prefix
))
6643 add_sysrooted_prefix (&startfile_prefixes
,
6644 standard_startfile_prefix
, "BINUTILS",
6645 PREFIX_PRIORITY_LAST
, 0, 1);
6646 else if (*cross_compile
== '0')
6648 add_prefix (&startfile_prefixes
,
6649 concat (gcc_exec_prefix
6650 ? gcc_exec_prefix
: standard_exec_prefix
,
6652 standard_startfile_prefix
, NULL
),
6653 NULL
, PREFIX_PRIORITY_LAST
, 0, 1);
6656 /* Sysrooted prefixes are relocated because target_system_root is
6657 also relocated by gcc_exec_prefix. */
6658 if (*standard_startfile_prefix_1
)
6659 add_sysrooted_prefix (&startfile_prefixes
,
6660 standard_startfile_prefix_1
, "BINUTILS",
6661 PREFIX_PRIORITY_LAST
, 0, 1);
6662 if (*standard_startfile_prefix_2
)
6663 add_sysrooted_prefix (&startfile_prefixes
,
6664 standard_startfile_prefix_2
, "BINUTILS",
6665 PREFIX_PRIORITY_LAST
, 0, 1);
6668 /* Process any user specified specs in the order given on the command
6670 for (uptr
= user_specs_head
; uptr
; uptr
= uptr
->next
)
6672 char *filename
= find_a_file (&startfile_prefixes
, uptr
->filename
,
6674 read_specs (filename
? filename
: uptr
->filename
, false, true);
6677 /* Process any user self specs. */
6679 struct spec_list
*sl
;
6680 for (sl
= specs
; sl
; sl
= sl
->next
)
6681 if (sl
->name_len
== sizeof "self_spec" - 1
6682 && !strcmp (sl
->name
, "self_spec"))
6683 do_self_spec (*sl
->ptr_spec
);
6688 enum save_temps save
;
6690 if (!compare_debug_second
)
6692 n_switches_debug_check
[1] = n_switches
;
6693 n_switches_alloc_debug_check
[1] = n_switches_alloc
;
6694 switches_debug_check
[1] = XDUPVEC (struct switchstr
, switches
,
6697 do_self_spec ("%:compare-debug-self-opt()");
6698 n_switches_debug_check
[0] = n_switches
;
6699 n_switches_alloc_debug_check
[0] = n_switches_alloc
;
6700 switches_debug_check
[0] = switches
;
6702 n_switches
= n_switches_debug_check
[1];
6703 n_switches_alloc
= n_switches_alloc_debug_check
[1];
6704 switches
= switches_debug_check
[1];
6707 /* Avoid crash when computing %j in this early. */
6708 save
= save_temps_flag
;
6709 save_temps_flag
= SAVE_TEMPS_NONE
;
6711 compare_debug
= -compare_debug
;
6712 do_self_spec ("%:compare-debug-self-opt()");
6714 save_temps_flag
= save
;
6716 if (!compare_debug_second
)
6718 n_switches_debug_check
[1] = n_switches
;
6719 n_switches_alloc_debug_check
[1] = n_switches_alloc
;
6720 switches_debug_check
[1] = switches
;
6721 compare_debug
= -compare_debug
;
6722 n_switches
= n_switches_debug_check
[0];
6723 n_switches_alloc
= n_switches_debug_check
[0];
6724 switches
= switches_debug_check
[0];
6729 /* If we have a GCC_EXEC_PREFIX envvar, modify it for cpp's sake. */
6730 if (gcc_exec_prefix
)
6731 gcc_exec_prefix
= concat (gcc_exec_prefix
, spec_host_machine
,
6732 dir_separator_str
, spec_version
,
6733 accel_dir_suffix
, dir_separator_str
, NULL
);
6735 /* Now we have the specs.
6736 Set the `valid' bits for switches that match anything in any spec. */
6738 validate_all_switches ();
6740 /* Now that we have the switches and the specs, set
6741 the subdirectory based on the options. */
6742 set_multilib_dir ();
6744 /* Set up to remember the pathname of gcc and any options
6745 needed for collect. We use argv[0] instead of progname because
6746 we need the complete pathname. */
6747 obstack_init (&collect_obstack
);
6748 obstack_grow (&collect_obstack
, "COLLECT_GCC=", sizeof ("COLLECT_GCC=") - 1);
6749 obstack_grow (&collect_obstack
, argv
[0], strlen (argv
[0]) + 1);
6750 xputenv (XOBFINISH (&collect_obstack
, char *));
6752 if (strlen (OFFLOAD_TARGETS
) > 0)
6754 obstack_init (&collect_obstack
);
6755 obstack_grow (&collect_obstack
, "OFFLOAD_TARGET_NAMES=",
6756 sizeof ("OFFLOAD_TARGET_NAMES=") - 1);
6757 obstack_grow (&collect_obstack
, OFFLOAD_TARGETS
,
6758 strlen (OFFLOAD_TARGETS
) + 1);
6759 xputenv (XOBFINISH (&collect_obstack
, char *));
6762 /* Set up to remember the pathname of the lto wrapper. */
6765 lto_wrapper_file
= NULL
;
6767 lto_wrapper_file
= find_a_file (&exec_prefixes
, "lto-wrapper",
6769 if (lto_wrapper_file
)
6771 lto_wrapper_file
= convert_white_space (lto_wrapper_file
);
6772 lto_wrapper_spec
= lto_wrapper_file
;
6773 obstack_init (&collect_obstack
);
6774 obstack_grow (&collect_obstack
, "COLLECT_LTO_WRAPPER=",
6775 sizeof ("COLLECT_LTO_WRAPPER=") - 1);
6776 obstack_grow (&collect_obstack
, lto_wrapper_spec
,
6777 strlen (lto_wrapper_spec
) + 1);
6778 xputenv (XOBFINISH (&collect_obstack
, char *));
6781 /* Reject switches that no pass was interested in. */
6783 for (i
= 0; (int) i
< n_switches
; i
++)
6784 if (! switches
[i
].validated
)
6785 error ("unrecognized command line option %<-%s%>", switches
[i
].part1
);
6787 /* Obey some of the options. */
6789 if (print_search_dirs
)
6791 printf (_("install: %s%s\n"),
6792 gcc_exec_prefix
? gcc_exec_prefix
: standard_exec_prefix
,
6793 gcc_exec_prefix
? "" : machine_suffix
);
6794 printf (_("programs: %s\n"),
6795 build_search_list (&exec_prefixes
, "", false, false));
6796 printf (_("libraries: %s\n"),
6797 build_search_list (&startfile_prefixes
, "", false, true));
6801 if (print_file_name
)
6803 printf ("%s\n", find_file (print_file_name
));
6807 if (print_prog_name
)
6809 if (use_ld
!= NULL
&& ! strcmp (print_prog_name
, "ld"))
6811 /* Append USE_LD to to the default linker. */
6812 #ifdef DEFAULT_LINKER
6814 # ifdef HAVE_HOST_EXECUTABLE_SUFFIX
6815 int len
= (sizeof (DEFAULT_LINKER
)
6816 - sizeof (HOST_EXECUTABLE_SUFFIX
));
6820 char *default_linker
= xstrdup (DEFAULT_LINKER
);
6821 /* Strip HOST_EXECUTABLE_SUFFIX if DEFAULT_LINKER contains
6822 HOST_EXECUTABLE_SUFFIX. */
6823 if (! strcmp (&default_linker
[len
], HOST_EXECUTABLE_SUFFIX
))
6825 default_linker
[len
] = '\0';
6826 ld
= concat (default_linker
, use_ld
,
6827 HOST_EXECUTABLE_SUFFIX
, NULL
);
6832 ld
= concat (DEFAULT_LINKER
, use_ld
, NULL
);
6833 if (access (ld
, X_OK
) == 0)
6835 printf ("%s\n", ld
);
6839 print_prog_name
= concat (print_prog_name
, use_ld
, NULL
);
6841 char *newname
= find_a_file (&exec_prefixes
, print_prog_name
, X_OK
, 0);
6842 printf ("%s\n", (newname
? newname
: print_prog_name
));
6846 if (print_multi_lib
)
6848 print_multilib_info ();
6852 if (print_multi_directory
)
6854 if (multilib_dir
== NULL
)
6857 printf ("%s\n", multilib_dir
);
6861 if (print_multiarch
)
6863 if (multiarch_dir
== NULL
)
6866 printf ("%s\n", multiarch_dir
);
6872 if (target_system_root
)
6874 if (target_sysroot_suffix
)
6875 printf ("%s%s\n", target_system_root
, target_sysroot_suffix
);
6877 printf ("%s\n", target_system_root
);
6882 if (print_multi_os_directory
)
6884 if (multilib_os_dir
== NULL
)
6887 printf ("%s\n", multilib_os_dir
);
6891 if (print_sysroot_headers_suffix
)
6893 if (*sysroot_hdrs_suffix_spec
)
6895 printf("%s\n", (target_sysroot_hdrs_suffix
6896 ? target_sysroot_hdrs_suffix
6901 /* The error status indicates that only one set of fixed
6902 headers should be built. */
6903 fatal_error ("not configured with sysroot headers suffix");
6906 if (print_help_list
)
6912 printf (_("\nFor bug reporting instructions, please see:\n"));
6913 printf ("%s.\n", bug_report_url
);
6918 /* We do not exit here. Instead we have created a fake input file
6919 called 'help-dummy' which needs to be compiled, and we pass this
6920 on the various sub-processes, along with the --help switch.
6921 Ensure their output appears after ours. */
6922 fputc ('\n', stdout
);
6928 printf (_("%s %s%s\n"), progname
, pkgversion_string
,
6930 printf ("Copyright %s 2014 Free Software Foundation, Inc.\n",
6932 fputs (_("This is free software; see the source for copying conditions. There is NO\n\
6933 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\n"),
6938 /* We do not exit here. We use the same mechanism of --help to print
6939 the version of the sub-processes. */
6940 fputc ('\n', stdout
);
6949 fnotice (stderr
, "Target: %s\n", spec_machine
);
6950 fnotice (stderr
, "Configured with: %s\n", configuration_arguments
);
6952 #ifdef THREAD_MODEL_SPEC
6953 /* We could have defined THREAD_MODEL_SPEC to "%*" by default,
6954 but there's no point in doing all this processing just to get
6955 thread_model back. */
6956 obstack_init (&obstack
);
6957 do_spec_1 (THREAD_MODEL_SPEC
, 0, thread_model
);
6958 obstack_1grow (&obstack
, '\0');
6959 thrmod
= XOBFINISH (&obstack
, const char *);
6961 thrmod
= thread_model
;
6964 fnotice (stderr
, "Thread model: %s\n", thrmod
);
6966 /* compiler_version is truncated at the first space when initialized
6967 from version string, so truncate version_string at the first space
6968 before comparing. */
6969 for (n
= 0; version_string
[n
]; n
++)
6970 if (version_string
[n
] == ' ')
6973 if (! strncmp (version_string
, compiler_version
, n
)
6974 && compiler_version
[n
] == 0)
6975 fnotice (stderr
, "gcc version %s %s\n", version_string
,
6978 fnotice (stderr
, "gcc driver version %s %sexecuting gcc version %s\n",
6979 version_string
, pkgversion_string
, compiler_version
);
6985 if (n_infiles
== added_libraries
)
6986 fatal_error ("no input files");
6991 /* Make a place to record the compiler output file names
6992 that correspond to the input files. */
6995 i
+= lang_specific_extra_outfiles
;
6996 outfiles
= XCNEWVEC (const char *, i
);
6998 /* Record which files were specified explicitly as link input. */
7000 explicit_link_files
= XCNEWVEC (char, n_infiles
);
7002 combine_inputs
= have_o
|| flag_wpa
;
7004 for (i
= 0; (int) i
< n_infiles
; i
++)
7006 const char *name
= infiles
[i
].name
;
7007 struct compiler
*compiler
= lookup_compiler (name
,
7009 infiles
[i
].language
);
7011 if (compiler
&& !(compiler
->combinable
))
7012 combine_inputs
= false;
7014 if (lang_n_infiles
> 0 && compiler
!= input_file_compiler
7015 && infiles
[i
].language
&& infiles
[i
].language
[0] != '*')
7016 infiles
[i
].incompiler
= compiler
;
7020 input_file_compiler
= compiler
;
7021 infiles
[i
].incompiler
= compiler
;
7025 /* Since there is no compiler for this input file, assume it is a
7027 explicit_link_files
[i
] = 1;
7028 infiles
[i
].incompiler
= NULL
;
7030 infiles
[i
].compiled
= false;
7031 infiles
[i
].preprocessed
= false;
7034 if (!combine_inputs
&& have_c
&& have_o
&& lang_n_infiles
> 1)
7035 fatal_error ("cannot specify -o with -c, -S or -E with multiple files");
7037 for (i
= 0; (int) i
< n_infiles
; i
++)
7039 int this_file_error
= 0;
7041 /* Tell do_spec what to substitute for %i. */
7043 input_file_number
= i
;
7044 set_input (infiles
[i
].name
);
7046 if (infiles
[i
].compiled
)
7049 /* Use the same thing in %o, unless cp->spec says otherwise. */
7051 outfiles
[i
] = gcc_input_filename
;
7053 /* Figure out which compiler from the file's suffix. */
7056 = lookup_compiler (infiles
[i
].name
, input_filename_length
,
7057 infiles
[i
].language
);
7059 if (input_file_compiler
)
7061 /* Ok, we found an applicable compiler. Run its spec. */
7063 if (input_file_compiler
->spec
[0] == '#')
7065 error ("%s: %s compiler not installed on this system",
7066 gcc_input_filename
, &input_file_compiler
->spec
[1]);
7067 this_file_error
= 1;
7073 free (debug_check_temp_file
[0]);
7074 debug_check_temp_file
[0] = NULL
;
7076 free (debug_check_temp_file
[1]);
7077 debug_check_temp_file
[1] = NULL
;
7080 value
= do_spec (input_file_compiler
->spec
);
7081 infiles
[i
].compiled
= true;
7083 this_file_error
= 1;
7084 else if (compare_debug
&& debug_check_temp_file
[0])
7087 inform (0, "recompiling with -fcompare-debug");
7089 compare_debug
= -compare_debug
;
7090 n_switches
= n_switches_debug_check
[1];
7091 n_switches_alloc
= n_switches_alloc_debug_check
[1];
7092 switches
= switches_debug_check
[1];
7094 value
= do_spec (input_file_compiler
->spec
);
7096 compare_debug
= -compare_debug
;
7097 n_switches
= n_switches_debug_check
[0];
7098 n_switches_alloc
= n_switches_alloc_debug_check
[0];
7099 switches
= switches_debug_check
[0];
7103 error ("during -fcompare-debug recompilation");
7104 this_file_error
= 1;
7107 gcc_assert (debug_check_temp_file
[1]
7108 && filename_cmp (debug_check_temp_file
[0],
7109 debug_check_temp_file
[1]));
7112 inform (0, "comparing final insns dumps");
7114 if (compare_files (debug_check_temp_file
))
7115 this_file_error
= 1;
7120 free (debug_check_temp_file
[0]);
7121 debug_check_temp_file
[0] = NULL
;
7123 free (debug_check_temp_file
[1]);
7124 debug_check_temp_file
[1] = NULL
;
7129 /* If this file's name does not contain a recognized suffix,
7130 record it as explicit linker input. */
7133 explicit_link_files
[i
] = 1;
7135 /* Clear the delete-on-failure queue, deleting the files in it
7136 if this compilation failed. */
7138 if (this_file_error
)
7140 delete_failure_queue ();
7143 /* If this compilation succeeded, don't delete those files later. */
7144 clear_failure_queue ();
7147 /* Reset the input file name to the first compile/object file name, for use
7148 with %b in LINK_SPEC. We use the first input file that we can find
7149 a compiler to compile it instead of using infiles.language since for
7150 languages other than C we use aliases that we then lookup later. */
7155 for (i
= 0; i
< n_infiles
; i
++)
7156 if (infiles
[i
].incompiler
7157 || (infiles
[i
].language
&& infiles
[i
].language
[0] != '*'))
7159 set_input (infiles
[i
].name
);
7166 /* Make sure INPUT_FILE_NUMBER points to first available open
7168 input_file_number
= n_infiles
;
7169 if (lang_specific_pre_link ())
7173 /* Determine if there are any linker input files. */
7174 num_linker_inputs
= 0;
7175 for (i
= 0; (int) i
< n_infiles
; i
++)
7176 if (explicit_link_files
[i
] || outfiles
[i
] != NULL
)
7177 num_linker_inputs
++;
7179 /* Run ld to link all the compiler output files. */
7181 if (num_linker_inputs
> 0 && !seen_error () && print_subprocess_help
< 2)
7183 int tmp
= execution_count
;
7187 #if HAVE_LTO_PLUGIN > 0
7188 #if HAVE_LTO_PLUGIN == 2
7189 const char *fno_use_linker_plugin
= "fno-use-linker-plugin";
7191 const char *fuse_linker_plugin
= "fuse-linker-plugin";
7195 /* We'll use ld if we can't find collect2. */
7196 if (! strcmp (linker_name_spec
, "collect2"))
7198 char *s
= find_a_file (&exec_prefixes
, "collect2", X_OK
, false);
7200 linker_name_spec
= "ld";
7203 #if HAVE_LTO_PLUGIN > 0
7204 #if HAVE_LTO_PLUGIN == 2
7205 if (!switch_matches (fno_use_linker_plugin
,
7206 fno_use_linker_plugin
7207 + strlen (fno_use_linker_plugin
), 0))
7209 if (switch_matches (fuse_linker_plugin
,
7211 + strlen (fuse_linker_plugin
), 0))
7214 char *temp_spec
= find_a_file (&exec_prefixes
,
7215 LTOPLUGINSONAME
, R_OK
,
7218 fatal_error ("-fuse-linker-plugin, but %s not found",
7220 linker_plugin_file_spec
= convert_white_space (temp_spec
);
7223 lto_gcc_spec
= argv
[0];
7226 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
7228 putenv_from_prefixes (&exec_prefixes
, "COMPILER_PATH", false);
7229 putenv_from_prefixes (&startfile_prefixes
, LIBRARY_PATH_ENV
, true);
7231 if (print_subprocess_help
== 1)
7233 printf (_("\nLinker options\n==============\n\n"));
7234 printf (_("Use \"-Wl,OPTION\" to pass \"OPTION\""
7235 " to the linker.\n\n"));
7238 value
= do_spec (link_command_spec
);
7241 linker_was_run
= (tmp
!= execution_count
);
7244 /* If options said don't run linker,
7245 complain about input files to be given to the linker. */
7247 if (! linker_was_run
&& !seen_error ())
7248 for (i
= 0; (int) i
< n_infiles
; i
++)
7249 if (explicit_link_files
[i
]
7250 && !(infiles
[i
].language
&& infiles
[i
].language
[0] == '*'))
7251 warning (0, "%s: linker input file unused because linking not done",
7254 /* Delete some or all of the temporary files we made. */
7257 delete_failure_queue ();
7258 delete_temp_files ();
7260 if (print_help_list
)
7262 printf (("\nFor bug reporting instructions, please see:\n"));
7263 printf ("%s\n", bug_report_url
);
7267 return (signal_count
!= 0 ? 2
7268 : seen_error () ? (pass_exit_codes
? greatest_status
: 1)
7272 /* Find the proper compilation spec for the file name NAME,
7273 whose length is LENGTH. LANGUAGE is the specified language,
7274 or 0 if this file is to be passed to the linker. */
7276 static struct compiler
*
7277 lookup_compiler (const char *name
, size_t length
, const char *language
)
7279 struct compiler
*cp
;
7281 /* If this was specified by the user to be a linker input, indicate that. */
7282 if (language
!= 0 && language
[0] == '*')
7285 /* Otherwise, look for the language, if one is spec'd. */
7288 for (cp
= compilers
+ n_compilers
- 1; cp
>= compilers
; cp
--)
7289 if (cp
->suffix
[0] == '@' && !strcmp (cp
->suffix
+ 1, language
))
7292 error ("language %s not recognized", language
);
7296 /* Look for a suffix. */
7297 for (cp
= compilers
+ n_compilers
- 1; cp
>= compilers
; cp
--)
7299 if (/* The suffix `-' matches only the file name `-'. */
7300 (!strcmp (cp
->suffix
, "-") && !strcmp (name
, "-"))
7301 || (strlen (cp
->suffix
) < length
7302 /* See if the suffix matches the end of NAME. */
7303 && !strcmp (cp
->suffix
,
7304 name
+ length
- strlen (cp
->suffix
))
7309 #if defined (OS2) ||defined (HAVE_DOS_BASED_FILE_SYSTEM)
7310 /* Look again, but case-insensitively this time. */
7312 for (cp
= compilers
+ n_compilers
- 1; cp
>= compilers
; cp
--)
7314 if (/* The suffix `-' matches only the file name `-'. */
7315 (!strcmp (cp
->suffix
, "-") && !strcmp (name
, "-"))
7316 || (strlen (cp
->suffix
) < length
7317 /* See if the suffix matches the end of NAME. */
7318 && ((!strcmp (cp
->suffix
,
7319 name
+ length
- strlen (cp
->suffix
))
7320 || !strpbrk (cp
->suffix
, "ABCDEFGHIJKLMNOPQRSTUVWXYZ"))
7321 && !strcasecmp (cp
->suffix
,
7322 name
+ length
- strlen (cp
->suffix
)))
7328 if (cp
>= compilers
)
7330 if (cp
->spec
[0] != '@')
7331 /* A non-alias entry: return it. */
7334 /* An alias entry maps a suffix to a language.
7335 Search for the language; pass 0 for NAME and LENGTH
7336 to avoid infinite recursion if language not found. */
7337 return lookup_compiler (NULL
, 0, cp
->spec
+ 1);
7343 save_string (const char *s
, int len
)
7345 char *result
= XNEWVEC (char, len
+ 1);
7347 memcpy (result
, s
, len
);
7353 pfatal_with_name (const char *name
)
7355 perror_with_name (name
);
7356 delete_temp_files ();
7361 perror_with_name (const char *name
)
7363 error ("%s: %m", name
);
7367 validate_switches_from_spec (const char *spec
, bool user
)
7369 const char *p
= spec
;
7372 if (c
== '%' && (*p
== '{' || *p
== '<' || (*p
== 'W' && *++p
== '{')))
7373 /* We have a switch spec. */
7374 p
= validate_switches (p
+ 1, user
);
7378 validate_all_switches (void)
7380 struct compiler
*comp
;
7381 struct spec_list
*spec
;
7383 for (comp
= compilers
; comp
->spec
; comp
++)
7384 validate_switches_from_spec (comp
->spec
, false);
7386 /* Look through the linked list of specs read from the specs file. */
7387 for (spec
= specs
; spec
; spec
= spec
->next
)
7388 validate_switches_from_spec (*spec
->ptr_spec
, spec
->user_p
);
7390 validate_switches_from_spec (link_command_spec
, false);
7393 /* Look at the switch-name that comes after START
7394 and mark as valid all supplied switches that match it. */
7397 validate_switches (const char *start
, bool user_spec
)
7399 const char *p
= start
;
7403 bool suffix
= false;
7404 bool starred
= false;
7406 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
7415 if (*p
== '.' || *p
== ',')
7419 while (ISIDNUM (*p
) || *p
== '-' || *p
== '+' || *p
== '='
7420 || *p
== ',' || *p
== '.' || *p
== '@')
7425 starred
= true, p
++;
7431 /* Mark all matching switches as valid. */
7432 for (i
= 0; i
< n_switches
; i
++)
7433 if (!strncmp (switches
[i
].part1
, atom
, len
)
7434 && (starred
|| switches
[i
].part1
[len
] == '\0')
7435 && (switches
[i
].known
|| user_spec
))
7436 switches
[i
].validated
= true;
7440 if (*p
&& (p
[-1] == '|' || p
[-1] == '&'))
7443 if (*p
&& p
[-1] == ':')
7445 while (*p
&& *p
!= ';' && *p
!= '}')
7450 if (*p
== '{' || *p
== '<')
7451 p
= validate_switches (p
+1, user_spec
);
7452 else if (p
[0] == 'W' && p
[1] == '{')
7453 p
= validate_switches (p
+2, user_spec
);
7460 if (*p
&& p
[-1] == ';')
7474 static struct mdswitchstr
*mdswitches
;
7475 static int n_mdswitches
;
7477 /* Check whether a particular argument was used. The first time we
7478 canonicalize the switches to keep only the ones we care about. */
7481 used_arg (const char *p
, int len
)
7486 const char *replace
;
7491 static struct mswitchstr
*mswitches
;
7492 static int n_mswitches
;
7497 struct mswitchstr
*matches
;
7501 /* Break multilib_matches into the component strings of string
7502 and replacement string. */
7503 for (q
= multilib_matches
; *q
!= '\0'; q
++)
7508 = (struct mswitchstr
*) alloca ((sizeof (struct mswitchstr
)) * cnt
);
7510 q
= multilib_matches
;
7519 fatal_error ("multilib spec %qs is invalid",
7524 matches
[i
].len
= q
- matches
[i
].str
;
7526 matches
[i
].replace
= ++q
;
7527 while (*q
!= ';' && *q
!= '\0')
7530 goto invalid_matches
;
7533 matches
[i
].rep_len
= q
- matches
[i
].replace
;
7539 /* Now build a list of the replacement string for switches that we care
7540 about. Make sure we allocate at least one entry. This prevents
7541 xmalloc from calling fatal, and prevents us from re-executing this
7544 = XNEWVEC (struct mswitchstr
, n_mdswitches
+ (n_switches
? n_switches
: 1));
7545 for (i
= 0; i
< n_switches
; i
++)
7546 if ((switches
[i
].live_cond
& SWITCH_IGNORE
) == 0)
7548 int xlen
= strlen (switches
[i
].part1
);
7549 for (j
= 0; j
< cnt
; j
++)
7550 if (xlen
== matches
[j
].len
7551 && ! strncmp (switches
[i
].part1
, matches
[j
].str
, xlen
))
7553 mswitches
[n_mswitches
].str
= matches
[j
].replace
;
7554 mswitches
[n_mswitches
].len
= matches
[j
].rep_len
;
7555 mswitches
[n_mswitches
].replace
= (char *) 0;
7556 mswitches
[n_mswitches
].rep_len
= 0;
7562 /* Add MULTILIB_DEFAULTS switches too, as long as they were not present
7563 on the command line nor any options mutually incompatible with
7565 for (i
= 0; i
< n_mdswitches
; i
++)
7569 for (q
= multilib_options
; *q
!= '\0'; *q
&& q
++)
7575 while (strncmp (q
, mdswitches
[i
].str
, mdswitches
[i
].len
) != 0
7576 || strchr (" /", q
[mdswitches
[i
].len
]) == NULL
)
7578 while (*q
!= ' ' && *q
!= '/' && *q
!= '\0')
7585 if (*q
!= ' ' && *q
!= '\0')
7587 while (*r
!= ' ' && *r
!= '\0')
7590 while (*q
!= ' ' && *q
!= '/' && *q
!= '\0')
7593 if (used_arg (r
, q
- r
))
7598 mswitches
[n_mswitches
].str
= mdswitches
[i
].str
;
7599 mswitches
[n_mswitches
].len
= mdswitches
[i
].len
;
7600 mswitches
[n_mswitches
].replace
= (char *) 0;
7601 mswitches
[n_mswitches
].rep_len
= 0;
7614 for (i
= 0; i
< n_mswitches
; i
++)
7615 if (len
== mswitches
[i
].len
&& ! strncmp (p
, mswitches
[i
].str
, len
))
7622 default_arg (const char *p
, int len
)
7626 for (i
= 0; i
< n_mdswitches
; i
++)
7627 if (len
== mdswitches
[i
].len
&& ! strncmp (p
, mdswitches
[i
].str
, len
))
7633 /* Work out the subdirectory to use based on the options. The format of
7634 multilib_select is a list of elements. Each element is a subdirectory
7635 name followed by a list of options followed by a semicolon. The format
7636 of multilib_exclusions is the same, but without the preceding
7637 directory. First gcc will check the exclusions, if none of the options
7638 beginning with an exclamation point are present, and all of the other
7639 options are present, then we will ignore this completely. Passing
7640 that, gcc will consider each multilib_select in turn using the same
7641 rules for matching the options. If a match is found, that subdirectory
7643 A subdirectory name is optionally followed by a colon and the corresponding
7647 set_multilib_dir (void)
7650 unsigned int this_path_len
;
7651 const char *this_path
, *this_arg
;
7652 const char *start
, *end
;
7654 int ok
, ndfltok
, first
;
7657 start
= multilib_defaults
;
7658 while (*start
== ' ' || *start
== '\t')
7660 while (*start
!= '\0')
7663 while (*start
!= ' ' && *start
!= '\t' && *start
!= '\0')
7665 while (*start
== ' ' || *start
== '\t')
7673 mdswitches
= XNEWVEC (struct mdswitchstr
, n_mdswitches
);
7674 for (start
= multilib_defaults
; *start
!= '\0'; start
= end
+ 1)
7676 while (*start
== ' ' || *start
== '\t')
7682 for (end
= start
+ 1;
7683 *end
!= ' ' && *end
!= '\t' && *end
!= '\0'; end
++)
7686 obstack_grow (&multilib_obstack
, start
, end
- start
);
7687 obstack_1grow (&multilib_obstack
, 0);
7688 mdswitches
[i
].str
= XOBFINISH (&multilib_obstack
, const char *);
7689 mdswitches
[i
++].len
= end
- start
;
7696 p
= multilib_exclusions
;
7699 /* Ignore newlines. */
7706 /* Check the arguments. */
7713 fatal_error ("multilib exclusions %qs is invalid",
7714 multilib_exclusions
);
7724 while (*p
!= ' ' && *p
!= ';')
7727 goto invalid_exclusions
;
7731 if (*this_arg
!= '!')
7739 ok
= used_arg (this_arg
, p
- this_arg
);
7754 p
= multilib_select
;
7756 /* Append multilib reuse rules if any. With those rules, we can reuse
7757 one multilib for certain different options sets. */
7758 if (strlen (multilib_reuse
) > 0)
7759 p
= concat (p
, multilib_reuse
, NULL
);
7763 /* Ignore newlines. */
7770 /* Get the initial path. */
7777 fatal_error ("multilib select %qs %qs is invalid",
7778 multilib_select
, multilib_reuse
);
7782 this_path_len
= p
- this_path
;
7784 /* Check the arguments. */
7791 goto invalid_select
;
7800 while (*p
!= ' ' && *p
!= ';')
7803 goto invalid_select
;
7807 if (*this_arg
!= '!')
7815 /* If this is a default argument, we can just ignore it.
7816 This is true even if this_arg begins with '!'. Beginning
7817 with '!' does not mean that this argument is necessarily
7818 inappropriate for this library: it merely means that
7819 there is a more specific library which uses this
7820 argument. If this argument is a default, we need not
7821 consider that more specific library. */
7822 ok
= used_arg (this_arg
, p
- this_arg
);
7829 if (default_arg (this_arg
, p
- this_arg
))
7838 if (this_path_len
!= 1
7839 || this_path
[0] != '.')
7841 char *new_multilib_dir
= XNEWVEC (char, this_path_len
+ 1);
7844 strncpy (new_multilib_dir
, this_path
, this_path_len
);
7845 new_multilib_dir
[this_path_len
] = '\0';
7846 q
= strchr (new_multilib_dir
, ':');
7849 multilib_dir
= new_multilib_dir
;
7856 const char *q
= this_path
, *end
= this_path
+ this_path_len
;
7858 while (q
< end
&& *q
!= ':')
7862 const char *q2
= q
+ 1, *ml_end
= end
;
7863 char *new_multilib_os_dir
;
7865 while (q2
< end
&& *q2
!= ':')
7869 if (ml_end
- q
== 1)
7870 multilib_os_dir
= xstrdup (".");
7873 new_multilib_os_dir
= XNEWVEC (char, ml_end
- q
);
7874 memcpy (new_multilib_os_dir
, q
+ 1, ml_end
- q
- 1);
7875 new_multilib_os_dir
[ml_end
- q
- 1] = '\0';
7876 multilib_os_dir
= new_multilib_os_dir
;
7879 if (q2
< end
&& *q2
== ':')
7881 char *new_multiarch_dir
= XNEWVEC (char, end
- q2
);
7882 memcpy (new_multiarch_dir
, q2
+ 1, end
- q2
- 1);
7883 new_multiarch_dir
[end
- q2
- 1] = '\0';
7884 multiarch_dir
= new_multiarch_dir
;
7893 if (multilib_dir
== NULL
&& multilib_os_dir
!= NULL
7894 && strcmp (multilib_os_dir
, ".") == 0)
7896 free (CONST_CAST (char *, multilib_os_dir
));
7897 multilib_os_dir
= NULL
;
7899 else if (multilib_dir
!= NULL
&& multilib_os_dir
== NULL
)
7900 multilib_os_dir
= multilib_dir
;
7903 /* Print out the multiple library subdirectory selection
7904 information. This prints out a series of lines. Each line looks
7905 like SUBDIRECTORY;@OPTION@OPTION, with as many options as is
7906 required. Only the desired options are printed out, the negative
7907 matches. The options are print without a leading dash. There are
7908 no spaces to make it easy to use the information in the shell.
7909 Each subdirectory is printed only once. This assumes the ordering
7910 generated by the genmultilib script. Also, we leave out ones that match
7914 print_multilib_info (void)
7916 const char *p
= multilib_select
;
7917 const char *last_path
= 0, *this_path
;
7919 unsigned int last_path_len
= 0;
7924 /* Ignore newlines. */
7931 /* Get the initial path. */
7938 fatal_error ("multilib select %qs is invalid", multilib_select
);
7944 /* When --disable-multilib was used but target defines
7945 MULTILIB_OSDIRNAMES, entries starting with .: (and not starting
7946 with .:: for multiarch configurations) are there just to find
7947 multilib_os_dir, so skip them from output. */
7948 if (this_path
[0] == '.' && this_path
[1] == ':' && this_path
[2] != ':')
7951 /* Check for matches with the multilib_exclusions. We don't bother
7952 with the '!' in either list. If any of the exclusion rules match
7953 all of its options with the select rule, we skip it. */
7955 const char *e
= multilib_exclusions
;
7956 const char *this_arg
;
7961 /* Ignore newlines. */
7968 /* Check the arguments. */
7977 fatal_error ("multilib exclusion %qs is invalid",
7978 multilib_exclusions
);
7989 while (*e
!= ' ' && *e
!= ';')
7992 goto invalid_exclusion
;
8000 int len
= e
- this_arg
;
8003 goto invalid_select
;
8007 while (*q
!= ' ' && *q
!= ';')
8010 goto invalid_select
;
8014 if (! strncmp (arg
, this_arg
,
8015 (len
< q
- arg
) ? q
- arg
: len
)
8016 || default_arg (this_arg
, e
- this_arg
))
8046 /* If this is a duplicate, skip it. */
8047 skip
= (last_path
!= 0
8048 && (unsigned int) (p
- this_path
) == last_path_len
8049 && ! filename_ncmp (last_path
, this_path
, last_path_len
));
8051 last_path
= this_path
;
8052 last_path_len
= p
- this_path
;
8055 /* If this directory requires any default arguments, we can skip
8056 it. We will already have printed a directory identical to
8057 this one which does not require that default argument. */
8068 goto invalid_select
;
8075 while (*q
!= ' ' && *q
!= ';')
8078 goto invalid_select
;
8083 && default_arg (arg
, q
- arg
))
8098 for (p1
= last_path
; p1
< p
&& *p1
!= ':'; p1
++)
8109 goto invalid_select
;
8117 use_arg
= *p
!= '!';
8122 while (*p
!= ' ' && *p
!= ';')
8125 goto invalid_select
;
8137 /* If there are extra options, print them now. */
8138 if (multilib_extra
&& *multilib_extra
)
8140 int print_at
= TRUE
;
8143 for (q
= multilib_extra
; *q
!= '\0'; q
++)
8164 /* getenv built-in spec function.
8166 Returns the value of the environment variable given by its first
8167 argument, concatenated with the second argument. If the
8168 environment variable is not defined, a fatal error is issued. */
8171 getenv_spec_function (int argc
, const char **argv
)
8181 value
= getenv (argv
[0]);
8183 fatal_error ("environment variable %qs not defined", argv
[0]);
8185 /* We have to escape every character of the environment variable so
8186 they are not interpreted as active spec characters. A
8187 particularly painful case is when we are reading a variable
8188 holding a windows path complete with \ separators. */
8189 len
= strlen (value
) * 2 + strlen (argv
[1]) + 1;
8190 result
= XNEWVAR (char, len
);
8191 for (ptr
= result
; *value
; ptr
+= 2)
8197 strcpy (ptr
, argv
[1]);
8202 /* if-exists built-in spec function.
8204 Checks to see if the file specified by the absolute pathname in
8205 ARGS exists. Returns that pathname if found.
8207 The usual use for this function is to check for a library file
8208 (whose name has been expanded with %s). */
8211 if_exists_spec_function (int argc
, const char **argv
)
8213 /* Must have only one argument. */
8214 if (argc
== 1 && IS_ABSOLUTE_PATH (argv
[0]) && ! access (argv
[0], R_OK
))
8220 /* if-exists-else built-in spec function.
8222 This is like if-exists, but takes an additional argument which
8223 is returned if the first argument does not exist. */
8226 if_exists_else_spec_function (int argc
, const char **argv
)
8228 /* Must have exactly two arguments. */
8232 if (IS_ABSOLUTE_PATH (argv
[0]) && ! access (argv
[0], R_OK
))
8238 /* sanitize built-in spec function.
8240 This returns non-NULL, if sanitizing address, thread or
8241 any of the undefined behavior sanitizers. */
8244 sanitize_spec_function (int argc
, const char **argv
)
8249 if (strcmp (argv
[0], "address") == 0)
8250 return (flag_sanitize
& SANITIZE_USER_ADDRESS
) ? "" : NULL
;
8251 if (strcmp (argv
[0], "kernel-address") == 0)
8252 return (flag_sanitize
& SANITIZE_KERNEL_ADDRESS
) ? "" : NULL
;
8253 if (strcmp (argv
[0], "thread") == 0)
8254 return (flag_sanitize
& SANITIZE_THREAD
) ? "" : NULL
;
8255 if (strcmp (argv
[0], "undefined") == 0)
8256 return ((flag_sanitize
& (SANITIZE_UNDEFINED
| SANITIZE_NONDEFAULT
))
8257 && !flag_sanitize_undefined_trap_on_error
) ? "" : NULL
;
8258 if (strcmp (argv
[0], "leak") == 0)
8259 return ((flag_sanitize
8260 & (SANITIZE_ADDRESS
| SANITIZE_LEAK
| SANITIZE_THREAD
))
8261 == SANITIZE_LEAK
) ? "" : NULL
;
8265 /* replace-outfile built-in spec function.
8267 This looks for the first argument in the outfiles array's name and
8268 replaces it with the second argument. */
8271 replace_outfile_spec_function (int argc
, const char **argv
)
8274 /* Must have exactly two arguments. */
8278 for (i
= 0; i
< n_infiles
; i
++)
8280 if (outfiles
[i
] && !filename_cmp (outfiles
[i
], argv
[0]))
8281 outfiles
[i
] = xstrdup (argv
[1]);
8286 /* remove-outfile built-in spec function.
8288 * This looks for the first argument in the outfiles array's name and
8292 remove_outfile_spec_function (int argc
, const char **argv
)
8295 /* Must have exactly one argument. */
8299 for (i
= 0; i
< n_infiles
; i
++)
8301 if (outfiles
[i
] && !filename_cmp (outfiles
[i
], argv
[0]))
8307 /* Given two version numbers, compares the two numbers.
8308 A version number must match the regular expression
8309 ([1-9][0-9]*|0)(\.([1-9][0-9]*|0))*
8312 compare_version_strings (const char *v1
, const char *v2
)
8317 if (regcomp (&r
, "^([1-9][0-9]*|0)(\\.([1-9][0-9]*|0))*$",
8318 REG_EXTENDED
| REG_NOSUB
) != 0)
8320 rresult
= regexec (&r
, v1
, 0, NULL
, 0);
8321 if (rresult
== REG_NOMATCH
)
8322 fatal_error ("invalid version number %qs", v1
);
8323 else if (rresult
!= 0)
8325 rresult
= regexec (&r
, v2
, 0, NULL
, 0);
8326 if (rresult
== REG_NOMATCH
)
8327 fatal_error ("invalid version number %qs", v2
);
8328 else if (rresult
!= 0)
8331 return strverscmp (v1
, v2
);
8335 /* version_compare built-in spec function.
8337 This takes an argument of the following form:
8339 <comparison-op> <arg1> [<arg2>] <switch> <result>
8341 and produces "result" if the comparison evaluates to true,
8342 and nothing if it doesn't.
8344 The supported <comparison-op> values are:
8346 >= true if switch is a later (or same) version than arg1
8348 < true if switch is an earlier version than arg1
8350 >< true if switch is arg1 or later, and earlier than arg2
8351 <> true if switch is earlier than arg1 or is arg2 or later
8353 If the switch is not present, the condition is false unless
8354 the first character of the <comparison-op> is '!'.
8357 %:version-compare(>= 10.3 mmacosx-version-min= -lmx)
8358 adds -lmx if -mmacosx-version-min=10.3.9 was passed. */
8361 version_compare_spec_function (int argc
, const char **argv
)
8365 const char *switch_value
= NULL
;
8370 fatal_error ("too few arguments to %%:version-compare");
8371 if (argv
[0][0] == '\0')
8373 if ((argv
[0][1] == '<' || argv
[0][1] == '>') && argv
[0][0] != '!')
8375 if (argc
!= nargs
+ 3)
8376 fatal_error ("too many arguments to %%:version-compare");
8378 switch_len
= strlen (argv
[nargs
+ 1]);
8379 for (i
= 0; i
< n_switches
; i
++)
8380 if (!strncmp (switches
[i
].part1
, argv
[nargs
+ 1], switch_len
)
8381 && check_live_switch (i
, switch_len
))
8382 switch_value
= switches
[i
].part1
+ switch_len
;
8384 if (switch_value
== NULL
)
8388 comp1
= compare_version_strings (switch_value
, argv
[1]);
8390 comp2
= compare_version_strings (switch_value
, argv
[2]);
8392 comp2
= -1; /* This value unused. */
8395 switch (argv
[0][0] << 8 | argv
[0][1])
8397 case '>' << 8 | '=':
8398 result
= comp1
>= 0;
8400 case '!' << 8 | '<':
8401 result
= comp1
>= 0 || switch_value
== NULL
;
8406 case '!' << 8 | '>':
8407 result
= comp1
< 0 || switch_value
== NULL
;
8409 case '>' << 8 | '<':
8410 result
= comp1
>= 0 && comp2
< 0;
8412 case '<' << 8 | '>':
8413 result
= comp1
< 0 || comp2
>= 0;
8417 fatal_error ("unknown operator %qs in %%:version-compare", argv
[0]);
8422 return argv
[nargs
+ 2];
8425 /* %:include builtin spec function. This differs from %include in that it
8426 can be nested inside a spec, and thus be conditionalized. It takes
8427 one argument, the filename, and looks for it in the startfile path.
8428 The result is always NULL, i.e. an empty expansion. */
8431 include_spec_function (int argc
, const char **argv
)
8438 file
= find_a_file (&startfile_prefixes
, argv
[0], R_OK
, true);
8439 read_specs (file
? file
: argv
[0], false, false);
8444 /* %:find-file spec function. This function replaces its argument by
8445 the file found through find_file, that is the -print-file-name gcc
8448 find_file_spec_function (int argc
, const char **argv
)
8455 file
= find_file (argv
[0]);
8460 /* %:find-plugindir spec function. This function replaces its argument
8461 by the -iplugindir=<dir> option. `dir' is found through find_file, that
8462 is the -print-file-name gcc program option. */
8464 find_plugindir_spec_function (int argc
, const char **argv ATTRIBUTE_UNUSED
)
8471 option
= concat ("-iplugindir=", find_file ("plugin"), NULL
);
8476 /* %:print-asm-header spec function. Print a banner to say that the
8477 following output is from the assembler. */
8480 print_asm_header_spec_function (int arg ATTRIBUTE_UNUSED
,
8481 const char **argv ATTRIBUTE_UNUSED
)
8483 printf (_("Assembler options\n=================\n\n"));
8484 printf (_("Use \"-Wa,OPTION\" to pass \"OPTION\" to the assembler.\n\n"));
8489 /* Get a random number for -frandom-seed */
8491 static unsigned HOST_WIDE_INT
8492 get_random_number (void)
8494 unsigned HOST_WIDE_INT ret
= 0;
8497 fd
= open ("/dev/urandom", O_RDONLY
);
8500 read (fd
, &ret
, sizeof (HOST_WIDE_INT
));
8506 /* Get some more or less random data. */
8507 #ifdef HAVE_GETTIMEOFDAY
8511 gettimeofday (&tv
, NULL
);
8512 ret
= tv
.tv_sec
* 1000 + tv
.tv_usec
/ 1000;
8516 time_t now
= time (NULL
);
8518 if (now
!= (time_t)-1)
8519 ret
= (unsigned) now
;
8523 return ret
^ getpid ();
8526 /* %:compare-debug-dump-opt spec function. Save the last argument,
8527 expected to be the last -fdump-final-insns option, or generate a
8531 compare_debug_dump_opt_spec_function (int arg
,
8532 const char **argv ATTRIBUTE_UNUSED
)
8537 static char random_seed
[HOST_BITS_PER_WIDE_INT
/ 4 + 3];
8540 fatal_error ("too many arguments to %%:compare-debug-dump-opt");
8542 do_spec_2 ("%{fdump-final-insns=*:%*}");
8543 do_spec_1 (" ", 0, NULL
);
8545 if (argbuf
.length () > 0
8546 && strcmp (argv
[argbuf
.length () - 1], "."))
8551 name
= xstrdup (argv
[argbuf
.length () - 1]);
8556 const char *ext
= NULL
;
8558 if (argbuf
.length () > 0)
8560 do_spec_2 ("%{o*:%*}%{!o:%{!S:%b%O}%{S:%b.s}}");
8563 else if (!compare_debug
)
8566 do_spec_2 ("%g.gkd");
8568 do_spec_1 (" ", 0, NULL
);
8570 gcc_assert (argbuf
.length () > 0);
8572 name
= concat (argbuf
.last (), ext
, NULL
);
8574 ret
= concat ("-fdump-final-insns=", name
, NULL
);
8577 which
= compare_debug
< 0;
8578 debug_check_temp_file
[which
] = name
;
8582 unsigned HOST_WIDE_INT value
= get_random_number ();
8584 sprintf (random_seed
, HOST_WIDE_INT_PRINT_HEX
, value
);
8590 ret
= concat ("%{!frandom-seed=*:-frandom-seed=", random_seed
, "} ",
8601 static const char *debug_auxbase_opt
;
8603 /* %:compare-debug-self-opt spec function. Expands to the options
8604 that are to be passed in the second compilation of
8608 compare_debug_self_opt_spec_function (int arg
,
8609 const char **argv ATTRIBUTE_UNUSED
)
8612 fatal_error ("too many arguments to %%:compare-debug-self-opt");
8614 if (compare_debug
>= 0)
8617 do_spec_2 ("%{c|S:%{o*:%*}}");
8618 do_spec_1 (" ", 0, NULL
);
8620 if (argbuf
.length () > 0)
8621 debug_auxbase_opt
= concat ("-auxbase-strip ",
8625 debug_auxbase_opt
= NULL
;
8628 %<o %<MD %<MMD %<MF* %<MG %<MP %<MQ* %<MT* \
8629 %<fdump-final-insns=* -w -S -o %j \
8630 %{!fcompare-debug-second:-fcompare-debug-second} \
8631 ", compare_debug_opt
, NULL
);
8634 /* %:compare-debug-auxbase-opt spec function. Expands to the auxbase
8635 options that are to be passed in the second compilation of
8636 compare-debug. It expects, as an argument, the basename of the
8637 current input file name, with the .gk suffix appended to it. */
8640 compare_debug_auxbase_opt_spec_function (int arg
,
8647 fatal_error ("too few arguments to %%:compare-debug-auxbase-opt");
8650 fatal_error ("too many arguments to %%:compare-debug-auxbase-opt");
8652 if (compare_debug
>= 0)
8655 len
= strlen (argv
[0]);
8656 if (len
< 3 || strcmp (argv
[0] + len
- 3, ".gk") != 0)
8657 fatal_error ("argument to %%:compare-debug-auxbase-opt "
8658 "does not end in .gk");
8660 if (debug_auxbase_opt
)
8661 return debug_auxbase_opt
;
8663 #define OPT "-auxbase "
8666 name
= (char*) xmalloc (sizeof (OPT
) + len
);
8667 memcpy (name
, OPT
, sizeof (OPT
) - 1);
8668 memcpy (name
+ sizeof (OPT
) - 1, argv
[0], len
);
8669 name
[sizeof (OPT
) - 1 + len
] = '\0';
8676 /* %:pass-through-libs spec function. Finds all -l options and input
8677 file names in the lib spec passed to it, and makes a list of them
8678 prepended with the plugin option to cause them to be passed through
8679 to the final link after all the new object files have been added. */
8682 pass_through_libs_spec_func (int argc
, const char **argv
)
8684 char *prepended
= xstrdup (" ");
8686 /* Shlemiel the painter's algorithm. Innately horrible, but at least
8687 we know that there will never be more than a handful of strings to
8688 concat, and it's only once per run, so it's not worth optimising. */
8689 for (n
= 0; n
< argc
; n
++)
8691 char *old
= prepended
;
8692 /* Anything that isn't an option is a full path to an output
8693 file; pass it through if it ends in '.a'. Among options,
8695 if (argv
[n
][0] == '-' && argv
[n
][1] == 'l')
8697 const char *lopt
= argv
[n
] + 2;
8698 /* Handle both joined and non-joined -l options. If for any
8699 reason there's a trailing -l with no joined or following
8700 arg just discard it. */
8701 if (!*lopt
&& ++n
>= argc
)
8705 prepended
= concat (prepended
, "-plugin-opt=-pass-through=-l",
8708 else if (!strcmp (".a", argv
[n
] + strlen (argv
[n
]) - 2))
8710 prepended
= concat (prepended
, "-plugin-opt=-pass-through=",
8711 argv
[n
], " ", NULL
);
8713 if (prepended
!= old
)
8719 /* %:replace-extension spec function. Replaces the extension of the
8720 first argument with the second argument. */
8723 replace_extension_spec_func (int argc
, const char **argv
)
8731 fatal_error ("too few arguments to %%:replace-extension");
8733 name
= xstrdup (argv
[0]);
8735 for (i
= strlen (name
) - 1; i
>= 0; i
--)
8736 if (IS_DIR_SEPARATOR (name
[i
]))
8739 p
= strrchr (name
+ i
+ 1, '.');
8743 result
= concat (name
, argv
[1], NULL
);
8749 /* Insert backslash before spaces in ORIG (usually a file path), to
8750 avoid being broken by spec parser.
8752 This function is needed as do_spec_1 treats white space (' ' and '\t')
8753 as the end of an argument. But in case of -plugin /usr/gcc install/xxx.so,
8754 the file name should be treated as a single argument rather than being
8755 broken into multiple. Solution is to insert '\\' before the space in a
8758 This function converts and only converts all occurrence of ' '
8759 to '\\' + ' ' and '\t' to '\\' + '\t'. For example:
8763 "a\\ b" -> "a\\\\ b"
8765 orig: input null-terminating string that was allocated by xalloc. The
8766 memory it points to might be freed in this function. Behavior undefined
8767 if ORIG wasn't xalloced or was freed already at entry.
8769 Return: ORIG if no conversion needed. Otherwise a newly allocated string
8770 that was converted from ORIG. */
8773 convert_white_space (char *orig
)
8775 int len
, number_of_space
= 0;
8777 for (len
= 0; orig
[len
]; len
++)
8778 if (orig
[len
] == ' ' || orig
[len
] == '\t') number_of_space
++;
8780 if (number_of_space
)
8782 char *new_spec
= (char *) xmalloc (len
+ number_of_space
+ 1);
8784 for (j
= 0, k
= 0; j
<= len
; j
++, k
++)
8786 if (orig
[j
] == ' ' || orig
[j
] == '\t')
8787 new_spec
[k
++] = '\\';
8788 new_spec
[k
] = orig
[j
];