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 void try_generate_repro (const char **argv
);
258 static const char *getenv_spec_function (int, const char **);
259 static const char *if_exists_spec_function (int, const char **);
260 static const char *if_exists_else_spec_function (int, const char **);
261 static const char *sanitize_spec_function (int, const char **);
262 static const char *replace_outfile_spec_function (int, const char **);
263 static const char *remove_outfile_spec_function (int, const char **);
264 static const char *version_compare_spec_function (int, const char **);
265 static const char *include_spec_function (int, const char **);
266 static const char *find_file_spec_function (int, const char **);
267 static const char *find_plugindir_spec_function (int, const char **);
268 static const char *print_asm_header_spec_function (int, const char **);
269 static const char *compare_debug_dump_opt_spec_function (int, const char **);
270 static const char *compare_debug_self_opt_spec_function (int, const char **);
271 static const char *compare_debug_auxbase_opt_spec_function (int, const char **);
272 static const char *pass_through_libs_spec_func (int, const char **);
273 static const char *replace_extension_spec_func (int, const char **);
274 static char *convert_white_space (char *);
276 /* The Specs Language
278 Specs are strings containing lines, each of which (if not blank)
279 is made up of a program name, and arguments separated by spaces.
280 The program name must be exact and start from root, since no path
281 is searched and it is unreliable to depend on the current working directory.
282 Redirection of input or output is not supported; the subprograms must
283 accept filenames saying what files to read and write.
285 In addition, the specs can contain %-sequences to substitute variable text
286 or for conditional text. Here is a table of all defined %-sequences.
287 Note that spaces are not generated automatically around the results of
288 expanding these sequences; therefore, you can concatenate them together
289 or with constant text in a single argument.
291 %% substitute one % into the program name or argument.
292 %i substitute the name of the input file being processed.
293 %b substitute the basename of the input file being processed.
294 This is the substring up to (and not including) the last period
295 and not including the directory unless -save-temps was specified
296 to put temporaries in a different location.
297 %B same as %b, but include the file suffix (text after the last period).
299 substitute a file name that has suffix SUFFIX and is chosen
300 once per compilation, and mark the argument a la %d. To reduce
301 exposure to denial-of-service attacks, the file name is now
302 chosen in a way that is hard to predict even when previously
303 chosen file names are known. For example, `%g.s ... %g.o ... %g.s'
304 might turn into `ccUVUUAU.s ccXYAXZ12.o ccUVUUAU.s'. SUFFIX matches
305 the regexp "[.0-9A-Za-z]*%O"; "%O" is treated exactly as if it
306 had been pre-processed. Previously, %g was simply substituted
307 with a file name chosen once per compilation, without regard
308 to any appended suffix (which was therefore treated just like
309 ordinary text), making such attacks more likely to succeed.
311 like %g, but if -pipe is in effect, expands simply to "-".
313 like %g, but if -pipe is in effect, expands to nothing. (We have both
314 %| and %m to accommodate differences between system assemblers; see
315 the AS_NEEDS_DASH_FOR_PIPED_INPUT target macro.)
317 like %g, but generates a new temporary file name even if %uSUFFIX
320 substitutes the last file name generated with %uSUFFIX, generating a
321 new one if there is no such last file name. In the absence of any
322 %uSUFFIX, this is just like %gSUFFIX, except they don't share
323 the same suffix "space", so `%g.s ... %U.s ... %g.s ... %U.s'
324 would involve the generation of two distinct file names, one
325 for each `%g.s' and another for each `%U.s'. Previously, %U was
326 simply substituted with a file name chosen for the previous %u,
327 without regard to any appended suffix.
329 substitutes the name of the HOST_BIT_BUCKET, if any, and if it is
330 writable, and if save-temps is off; otherwise, substitute the name
331 of a temporary file, just like %u. This temporary file is not
332 meant for communication between processes, but rather as a junk
335 substitutes .SUFFIX for the suffixes of a matched switch's args when
336 it is subsequently output with %*. SUFFIX is terminated by the next
338 %d marks the argument containing or following the %d as a
339 temporary file name, so that that file will be deleted if GCC exits
340 successfully. Unlike %g, this contributes no text to the argument.
341 %w marks the argument containing or following the %w as the
342 "output file" of this compilation. This puts the argument
343 into the sequence of arguments that %o will substitute later.
344 %V indicates that this compilation produces no "output file".
346 like %{...} but mark last argument supplied within
347 as a file to be deleted on failure.
348 %o substitutes the names of all the output files, with spaces
349 automatically placed around them. You should write spaces
350 around the %o as well or the results are undefined.
351 %o is for use in the specs for running the linker.
352 Input files whose names have no recognized suffix are not compiled
353 at all, but they are included among the output files, so they will
355 %O substitutes the suffix for object files. Note that this is
356 handled specially when it immediately follows %g, %u, or %U
357 (with or without a suffix argument) because of the need for
358 those to form complete file names. The handling is such that
359 %O is treated exactly as if it had already been substituted,
360 except that %g, %u, and %U do not currently support additional
361 SUFFIX characters following %O as they would following, for
363 %I Substitute any of -iprefix (made from GCC_EXEC_PREFIX), -isysroot
364 (made from TARGET_SYSTEM_ROOT), -isystem (made from COMPILER_PATH
365 and -B options) and -imultilib as necessary.
366 %s current argument is the name of a library or startup file of some sort.
367 Search for that file in a standard list of directories
368 and substitute the full name found.
369 %eSTR Print STR as an error message. STR is terminated by a newline.
370 Use this when inconsistent options are detected.
371 %nSTR Print STR as a notice. STR is terminated by a newline.
372 %x{OPTION} Accumulate an option for %X.
373 %X Output the accumulated linker options specified by compilations.
374 %Y Output the accumulated assembler options specified by compilations.
375 %Z Output the accumulated preprocessor options specified by compilations.
376 %a process ASM_SPEC as a spec.
377 This allows config.h to specify part of the spec for running as.
378 %A process ASM_FINAL_SPEC as a spec. A capital A is actually
379 used here. This can be used to run a post-processor after the
380 assembler has done its job.
381 %D Dump out a -L option for each directory in startfile_prefixes.
382 If multilib_dir is set, extra entries are generated with it affixed.
383 %l process LINK_SPEC as a spec.
384 %L process LIB_SPEC as a spec.
385 %M Output multilib_os_dir.
386 %G process LIBGCC_SPEC as a spec.
387 %R Output the concatenation of target_system_root and
388 target_sysroot_suffix.
389 %S process STARTFILE_SPEC as a spec. A capital S is actually used here.
390 %E process ENDFILE_SPEC as a spec. A capital E is actually used here.
391 %C process CPP_SPEC as a spec.
392 %1 process CC1_SPEC as a spec.
393 %2 process CC1PLUS_SPEC as a spec.
394 %* substitute the variable part of a matched option. (See below.)
395 Note that each comma in the substituted string is replaced by
396 a single space. A space is appended after the last substition
397 unless there is more text in current sequence.
398 %<S remove all occurrences of -S from the command line.
399 Note - this command is position dependent. % commands in the
400 spec string before this one will see -S, % commands in the
401 spec string after this one will not.
402 %>S Similar to "%<S", but keep it in the GCC command line.
403 %<S* remove all occurrences of all switches beginning with -S from the
406 Call the named function FUNCTION, passing it ARGS. ARGS is
407 first processed as a nested spec string, then split into an
408 argument vector in the usual fashion. The function returns
409 a string which is processed as if it had appeared literally
410 as part of the current spec.
411 %{S} substitutes the -S switch, if that switch was given to GCC.
412 If that switch was not specified, this substitutes nothing.
413 Here S is a metasyntactic variable.
414 %{S*} substitutes all the switches specified to GCC whose names start
415 with -S. This is used for -o, -I, etc; switches that take
416 arguments. GCC considers `-o foo' as being one switch whose
417 name starts with `o'. %{o*} would substitute this text,
418 including the space; thus, two arguments would be generated.
419 %{S*&T*} likewise, but preserve order of S and T options (the order
420 of S and T in the spec is not significant). Can be any number
421 of ampersand-separated variables; for each the wild card is
422 optional. Useful for CPP as %{D*&U*&A*}.
424 %{S:X} substitutes X, if the -S switch was given to GCC.
425 %{!S:X} substitutes X, if the -S switch was NOT given to GCC.
426 %{S*:X} substitutes X if one or more switches whose names start
427 with -S was given to GCC. Normally X is substituted only
428 once, no matter how many such switches appeared. However,
429 if %* appears somewhere in X, then X will be substituted
430 once for each matching switch, with the %* replaced by the
431 part of that switch that matched the '*'. A space will be
432 appended after the last substition unless there is more
433 text in current sequence.
434 %{.S:X} substitutes X, if processing a file with suffix S.
435 %{!.S:X} substitutes X, if NOT processing a file with suffix S.
436 %{,S:X} substitutes X, if processing a file which will use spec S.
437 %{!,S:X} substitutes X, if NOT processing a file which will use spec S.
439 %{S|T:X} substitutes X if either -S or -T was given to GCC. This may be
440 combined with '!', '.', ',', and '*' as above binding stronger
442 If %* appears in X, all of the alternatives must be starred, and
443 only the first matching alternative is substituted.
444 %{%:function(args):X}
445 Call function named FUNCTION with args ARGS. If the function
446 returns non-NULL, then X is substituted, if it returns
447 NULL, it isn't substituted.
448 %{S:X; if S was given to GCC, substitutes X;
449 T:Y; else if T was given to GCC, substitutes Y;
450 :D} else substitutes D. There can be as many clauses as you need.
451 This may be combined with '.', '!', ',', '|', and '*' as above.
453 %(Spec) processes a specification defined in a specs file as *Spec:
455 The conditional text X in a %{S:X} or similar construct may contain
456 other nested % constructs or spaces, or even newlines. They are
457 processed as usual, as described above. Trailing white space in X is
458 ignored. White space may also appear anywhere on the left side of the
459 colon in these constructs, except between . or * and the corresponding
462 The -O, -f, -g, -m, and -W switches are handled specifically in these
463 constructs. If another value of -O or the negated form of a -f, -m, or
464 -W switch is found later in the command line, the earlier switch
465 value is ignored, except with {S*} where S is just one letter; this
466 passes all matching options.
468 The character | at the beginning of the predicate text is used to indicate
469 that a command should be piped to the following command, but only if -pipe
472 Note that it is built into GCC which switches take arguments and which
473 do not. You might think it would be useful to generalize this to
474 allow each compiler's spec to say which switches take arguments. But
475 this cannot be done in a consistent fashion. GCC cannot even decide
476 which input files have been specified without knowing which switches
477 take arguments, and it must know which input files to compile in order
478 to tell which compilers to run.
480 GCC also knows implicitly that arguments starting in `-l' are to be
481 treated as compiler output files, and passed to the linker in their
482 proper position among the other output files. */
484 /* Define the macros used for specs %a, %l, %L, %S, %C, %1. */
486 /* config.h can define ASM_SPEC to provide extra args to the assembler
487 or extra switch-translations. */
492 /* config.h can define ASM_FINAL_SPEC to run a post processor after
493 the assembler has run. */
494 #ifndef ASM_FINAL_SPEC
495 #define ASM_FINAL_SPEC \
497 objcopy --extract-dwo \
498 %{c:%{o*:%*}%{!o*:%b%O}}%{!c:%U%O} \
499 %{c:%{o*:%:replace-extension(%{o*:%*} .dwo)}%{!o*:%b.dwo}}%{!c:%b.dwo} \n\
500 objcopy --strip-dwo \
501 %{c:%{o*:%*}%{!o*:%b%O}}%{!c:%U%O} \
505 /* config.h can define CPP_SPEC to provide extra args to the C preprocessor
506 or extra switch-translations. */
511 /* config.h can define CC1_SPEC to provide extra args to cc1 and cc1plus
512 or extra switch-translations. */
517 /* config.h can define CC1PLUS_SPEC to provide extra args to cc1plus
518 or extra switch-translations. */
520 #define CC1PLUS_SPEC ""
523 /* config.h can define LINK_SPEC to provide extra args to the linker
524 or extra switch-translations. */
529 /* config.h can define LIB_SPEC to override the default libraries. */
531 #define LIB_SPEC "%{!shared:%{g*:-lg} %{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p}}"
534 /* When using -fsplit-stack we need to wrap pthread_create, in order
535 to initialize the stack guard. We always use wrapping, rather than
536 shared library ordering, and we keep the wrapper function in
537 libgcc. This is not yet a real spec, though it could become one;
538 it is currently just stuffed into LINK_SPEC. FIXME: This wrapping
539 only works with GNU ld and gold. */
540 #define STACK_SPLIT_SPEC " %{fsplit-stack: --wrap=pthread_create}"
543 #define STATIC_LIBASAN_LIBS \
544 " %{static-libasan:%:include(libsanitizer.spec)%(link_libasan)}"
545 #ifdef LIBASAN_EARLY_SPEC
546 #define LIBASAN_SPEC STATIC_LIBASAN_LIBS
547 #elif defined(HAVE_LD_STATIC_DYNAMIC)
548 #define LIBASAN_SPEC "%{static-libasan:" LD_STATIC_OPTION \
549 "} -lasan %{static-libasan:" LD_DYNAMIC_OPTION "}" \
552 #define LIBASAN_SPEC "-lasan" STATIC_LIBASAN_LIBS
556 #ifndef LIBASAN_EARLY_SPEC
557 #define LIBASAN_EARLY_SPEC ""
561 #define STATIC_LIBTSAN_LIBS \
562 " %{static-libtsan:%:include(libsanitizer.spec)%(link_libtsan)}"
563 #ifdef LIBTSAN_EARLY_SPEC
564 #define LIBTSAN_SPEC STATIC_LIBTSAN_LIBS
565 #elif defined(HAVE_LD_STATIC_DYNAMIC)
566 #define LIBTSAN_SPEC "%{static-libtsan:" LD_STATIC_OPTION \
567 "} -ltsan %{static-libtsan:" LD_DYNAMIC_OPTION "}" \
570 #define LIBTSAN_SPEC "-ltsan" STATIC_LIBTSAN_LIBS
574 #ifndef LIBTSAN_EARLY_SPEC
575 #define LIBTSAN_EARLY_SPEC ""
579 #define STATIC_LIBLSAN_LIBS \
580 " %{static-liblsan:%:include(libsanitizer.spec)%(link_liblsan)}"
581 #ifdef LIBLSAN_EARLY_SPEC
582 #define LIBLSAN_SPEC STATIC_LIBLSAN_LIBS
583 #elif defined(HAVE_LD_STATIC_DYNAMIC)
584 #define LIBLSAN_SPEC "%{static-liblsan:" LD_STATIC_OPTION \
585 "} -llsan %{static-liblsan:" LD_DYNAMIC_OPTION "}" \
588 #define LIBLSAN_SPEC "-llsan" STATIC_LIBLSAN_LIBS
592 #ifndef LIBLSAN_EARLY_SPEC
593 #define LIBLSAN_EARLY_SPEC ""
596 #ifndef LIBUBSAN_SPEC
597 #define STATIC_LIBUBSAN_LIBS \
598 " %{static-libubsan:%:include(libsanitizer.spec)%(link_libubsan)}"
599 #ifdef HAVE_LD_STATIC_DYNAMIC
600 #define LIBUBSAN_SPEC "%{static-libubsan:" LD_STATIC_OPTION \
601 "} -lubsan %{static-libubsan:" LD_DYNAMIC_OPTION "}" \
604 #define LIBUBSAN_SPEC "-lubsan" STATIC_LIBUBSAN_LIBS
608 /* Linker options for compressed debug sections. */
609 #if HAVE_LD_COMPRESS_DEBUG == 0
610 /* No linker support. */
611 #define LINK_COMPRESS_DEBUG_SPEC \
612 " %{gz*:%e-gz is not supported in this configuration} "
613 #elif HAVE_LD_COMPRESS_DEBUG == 1
614 /* GNU style on input, GNU ld options. Reject, not useful. */
615 #define LINK_COMPRESS_DEBUG_SPEC \
616 " %{gz*:%e-gz is not supported in this configuration} "
617 #elif HAVE_LD_COMPRESS_DEBUG == 2
618 /* GNU style, GNU gold options. */
619 #define LINK_COMPRESS_DEBUG_SPEC \
620 " %{gz|gz=zlib-gnu:" LD_COMPRESS_DEBUG_OPTION "=zlib}" \
621 " %{gz=none:" LD_COMPRESS_DEBUG_OPTION "=none}" \
622 " %{gz=zlib:%e-gz=zlib is not supported in this configuration} "
623 #elif HAVE_LD_COMPRESS_DEBUG == 3
624 /* ELF gABI style. */
625 #define LINK_COMPRESS_DEBUG_SPEC \
626 " %{gz|gz=zlib:" LD_COMPRESS_DEBUG_OPTION "=zlib}" \
627 " %{gz=none:" LD_COMPRESS_DEBUG_OPTION "=none}" \
628 " %{gz=zlib-gnu:" LD_COMPRESS_DEBUG_OPTION "=zlib-gnu} "
630 #error Unknown value for HAVE_LD_COMPRESS_DEBUG.
633 /* config.h can define LIBGCC_SPEC to override how and when libgcc.a is
636 #if defined(REAL_LIBGCC_SPEC)
637 #define LIBGCC_SPEC REAL_LIBGCC_SPEC
638 #elif defined(LINK_LIBGCC_SPECIAL_1)
639 /* Have gcc do the search for libgcc.a. */
640 #define LIBGCC_SPEC "libgcc.a%s"
642 #define LIBGCC_SPEC "-lgcc"
646 /* config.h can define STARTFILE_SPEC to override the default crt0 files. */
647 #ifndef STARTFILE_SPEC
648 #define STARTFILE_SPEC \
649 "%{!shared:%{pg:gcrt0%O%s}%{!pg:%{p:mcrt0%O%s}%{!p:crt0%O%s}}}"
652 /* config.h can define ENDFILE_SPEC to override the default crtn files. */
654 #define ENDFILE_SPEC ""
658 #define LINKER_NAME "collect2"
661 #ifdef HAVE_AS_DEBUG_PREFIX_MAP
662 #define ASM_MAP " %{fdebug-prefix-map=*:--debug-prefix-map %*}"
667 /* Assembler options for compressed debug sections. */
668 #if HAVE_LD_COMPRESS_DEBUG < 2
669 /* Reject if the linker cannot write compressed debug sections. */
670 #define ASM_COMPRESS_DEBUG_SPEC \
671 " %{gz*:%e-gz is not supported in this configuration} "
672 #else /* HAVE_LD_COMPRESS_DEBUG >= 2 */
673 #if HAVE_AS_COMPRESS_DEBUG == 0
674 /* No assembler support. Ignore silently. */
675 #define ASM_COMPRESS_DEBUG_SPEC \
677 #elif HAVE_AS_COMPRESS_DEBUG == 1
678 /* GNU style, GNU as options. */
679 #define ASM_COMPRESS_DEBUG_SPEC \
680 " %{gz|gz=zlib-gnu:" AS_COMPRESS_DEBUG_OPTION "}" \
681 " %{gz=none:" AS_NO_COMPRESS_DEBUG_OPTION "}" \
682 " %{gz=zlib:%e-gz=zlib is not supported in this configuration} "
683 #elif HAVE_AS_COMPRESS_DEBUG == 2
684 /* ELF gABI style. */
685 #define ASM_COMPRESS_DEBUG_SPEC \
686 " %{gz|gz=zlib:" AS_COMPRESS_DEBUG_OPTION "=zlib}" \
687 " %{gz=none:" AS_COMPRESS_DEBUG_OPTION "=none}" \
688 " %{gz=zlib-gnu:" AS_COMPRESS_DEBUG_OPTION "=zlib-gnu} "
690 #error Unknown value for HAVE_AS_COMPRESS_DEBUG.
692 #endif /* HAVE_LD_COMPRESS_DEBUG >= 2 */
694 /* Define ASM_DEBUG_SPEC to be a spec suitable for translating '-g'
696 #ifndef ASM_DEBUG_SPEC
697 # if defined(DBX_DEBUGGING_INFO) && defined(DWARF2_DEBUGGING_INFO) \
698 && defined(HAVE_AS_GDWARF2_DEBUG_FLAG) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
699 # define ASM_DEBUG_SPEC \
700 (PREFERRED_DEBUGGING_TYPE == DBX_DEBUG \
701 ? "%{!g0:%{gdwarf*:--gdwarf2}%{!gdwarf*:%{g*:--gstabs}}}" ASM_MAP \
702 : "%{!g0:%{gstabs*:--gstabs}%{!gstabs*:%{g*:--gdwarf2}}}" ASM_MAP)
704 # if defined(DBX_DEBUGGING_INFO) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
705 # define ASM_DEBUG_SPEC "%{g*:%{!g0:--gstabs}}" ASM_MAP
707 # if defined(DWARF2_DEBUGGING_INFO) && defined(HAVE_AS_GDWARF2_DEBUG_FLAG)
708 # define ASM_DEBUG_SPEC "%{g*:%{!g0:--gdwarf2}}" ASM_MAP
712 #ifndef ASM_DEBUG_SPEC
713 # define ASM_DEBUG_SPEC ""
716 /* Here is the spec for running the linker, after compiling all files. */
718 /* This is overridable by the target in case they need to specify the
719 -lgcc and -lc order specially, yet not require them to override all
720 of LINK_COMMAND_SPEC. */
721 #ifndef LINK_GCC_C_SEQUENCE_SPEC
722 #define LINK_GCC_C_SEQUENCE_SPEC "%G %L %G"
725 #ifndef LINK_SSP_SPEC
726 #ifdef TARGET_LIBC_PROVIDES_SSP
727 #define LINK_SSP_SPEC "%{fstack-protector:}"
729 #define LINK_SSP_SPEC "%{fstack-protector|fstack-protector-strong|fstack-protector-all:-lssp_nonshared -lssp}"
733 #ifndef LINK_PIE_SPEC
735 #define LINK_PIE_SPEC "%{pie:-pie} "
737 #define LINK_PIE_SPEC "%{pie:} "
741 #ifndef LINK_BUILDID_SPEC
742 # if defined(HAVE_LD_BUILDID) && defined(ENABLE_LD_BUILDID)
743 # define LINK_BUILDID_SPEC "%{!r:--build-id} "
747 /* Conditional to test whether the LTO plugin is used or not.
748 FIXME: For slim LTO we will need to enable plugin unconditionally. This
749 still cause problems with PLUGIN_LD != LD and when plugin is built but
750 not useable. For GCC 4.6 we don't support slim LTO and thus we can enable
751 plugin only when LTO is enabled. We still honor explicit
752 -fuse-linker-plugin if the linker used understands -plugin. */
754 /* The linker has some plugin support. */
755 #if HAVE_LTO_PLUGIN > 0
756 /* The linker used has full plugin support, use LTO plugin by default. */
757 #if HAVE_LTO_PLUGIN == 2
758 #define PLUGIN_COND "!fno-use-linker-plugin:%{!fno-lto"
759 #define PLUGIN_COND_CLOSE "}"
761 /* The linker used has limited plugin support, use LTO plugin with explicit
762 -fuse-linker-plugin. */
763 #define PLUGIN_COND "fuse-linker-plugin"
764 #define PLUGIN_COND_CLOSE ""
766 #define LINK_PLUGIN_SPEC \
768 -plugin %(linker_plugin_file) \
769 -plugin-opt=%(lto_wrapper) \
770 -plugin-opt=-fresolution=%u.res \
771 %{!nostdlib:%{!nodefaultlibs:%:pass-through-libs(%(link_gcc_c_sequence))}} \
774 /* The linker used doesn't support -plugin, reject -fuse-linker-plugin. */
775 #define LINK_PLUGIN_SPEC "%{fuse-linker-plugin:\
776 %e-fuse-linker-plugin is not supported in this configuration}"
779 /* Linker command line options for -fsanitize= early on the command line. */
780 #ifndef SANITIZER_EARLY_SPEC
781 #define SANITIZER_EARLY_SPEC "\
782 %{!nostdlib:%{!nodefaultlibs:%{%:sanitize(address):" LIBASAN_EARLY_SPEC "} \
783 %{%:sanitize(thread):" LIBTSAN_EARLY_SPEC "} \
784 %{%:sanitize(leak):" LIBLSAN_EARLY_SPEC "}}}"
787 /* Linker command line options for -fsanitize= late on the command line. */
788 #ifndef SANITIZER_SPEC
789 #define SANITIZER_SPEC "\
790 %{!nostdlib:%{!nodefaultlibs:%{%:sanitize(address):" LIBASAN_SPEC "\
791 %{static:%ecannot specify -static with -fsanitize=address}}\
792 %{%:sanitize(thread):" LIBTSAN_SPEC "\
793 %{!pie:%{!shared:%e-fsanitize=thread linking must be done with -pie or -shared}}}\
794 %{%:sanitize(undefined):" LIBUBSAN_SPEC "}\
795 %{%:sanitize(leak):" LIBLSAN_SPEC "}}}"
798 /* This is the spec to use, once the code for creating the vtable
799 verification runtime library, libvtv.so, has been created. Currently
800 the vtable verification runtime functions are in libstdc++, so we use
801 the spec just below this one. */
802 #ifndef VTABLE_VERIFICATION_SPEC
803 #define VTABLE_VERIFICATION_SPEC "\
804 %{!nostdlib:%{fvtable-verify=std: -lvtv -u_vtable_map_vars_start -u_vtable_map_vars_end}\
805 %{fvtable-verify=preinit: -lvtv -u_vtable_map_vars_start -u_vtable_map_vars_end}}"
808 /* -u* was put back because both BSD and SysV seem to support it. */
809 /* %{static:} simply prevents an error message if the target machine
810 doesn't handle -static. */
811 /* We want %{T*} after %{L*} and %D so that it can be used to specify linker
812 scripts which exist in user specified directories, or in standard
814 /* We pass any -flto flags on to the linker, which is expected
815 to understand them. In practice, this means it had better be collect2. */
816 /* %{e*} includes -export-dynamic; see comment in common.opt. */
817 #ifndef LINK_COMMAND_SPEC
818 #define LINK_COMMAND_SPEC "\
819 %{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:\
822 "%{flto|flto=*:%<fcompare-debug*} \
823 %{flto} %{fno-lto} %{flto=*} %l " LINK_PIE_SPEC \
824 "%{fuse-ld=*:-fuse-ld=%*} " LINK_COMPRESS_DEBUG_SPEC \
825 "%X %{o*} %{e*} %{N} %{n} %{r}\
826 %{s} %{t} %{u*} %{z} %{Z} %{!nostdlib:%{!nostartfiles:%S}} " VTABLE_VERIFICATION_SPEC " \
827 %{static:} %{L*} %(mfwrap) %(link_libgcc) " SANITIZER_EARLY_SPEC " %o\
828 %{fopenacc|fopenmp|ftree-parallelize-loops=*:%:include(libgomp.spec)%(link_gomp)}\
829 %{fcilkplus:%:include(libcilkrts.spec)%(link_cilkrts)}\
830 %{fgnu-tm:%:include(libitm.spec)%(link_itm)}\
831 %(mflib) " STACK_SPLIT_SPEC "\
832 %{fprofile-arcs|fprofile-generate*|coverage:-lgcov} " SANITIZER_SPEC " \
833 %{!nostdlib:%{!nodefaultlibs:%(link_ssp) %(link_gcc_c_sequence)}}\
834 %{!nostdlib:%{!nostartfiles:%E}} %{T*} }}}}}}"
837 #ifndef LINK_LIBGCC_SPEC
838 /* Generate -L options for startfile prefix list. */
839 # define LINK_LIBGCC_SPEC "%D"
842 #ifndef STARTFILE_PREFIX_SPEC
843 # define STARTFILE_PREFIX_SPEC ""
847 # define SYSROOT_SPEC "--sysroot=%R"
850 #ifndef SYSROOT_SUFFIX_SPEC
851 # define SYSROOT_SUFFIX_SPEC ""
854 #ifndef SYSROOT_HEADERS_SUFFIX_SPEC
855 # define SYSROOT_HEADERS_SUFFIX_SPEC ""
858 static const char *asm_debug
= ASM_DEBUG_SPEC
;
859 static const char *cpp_spec
= CPP_SPEC
;
860 static const char *cc1_spec
= CC1_SPEC
;
861 static const char *cc1plus_spec
= CC1PLUS_SPEC
;
862 static const char *link_gcc_c_sequence_spec
= LINK_GCC_C_SEQUENCE_SPEC
;
863 static const char *link_ssp_spec
= LINK_SSP_SPEC
;
864 static const char *asm_spec
= ASM_SPEC
;
865 static const char *asm_final_spec
= ASM_FINAL_SPEC
;
866 static const char *link_spec
= LINK_SPEC
;
867 static const char *lib_spec
= LIB_SPEC
;
868 static const char *link_gomp_spec
= "";
869 static const char *libgcc_spec
= LIBGCC_SPEC
;
870 static const char *endfile_spec
= ENDFILE_SPEC
;
871 static const char *startfile_spec
= STARTFILE_SPEC
;
872 static const char *linker_name_spec
= LINKER_NAME
;
873 static const char *linker_plugin_file_spec
= "";
874 static const char *lto_wrapper_spec
= "";
875 static const char *lto_gcc_spec
= "";
876 static const char *link_command_spec
= LINK_COMMAND_SPEC
;
877 static const char *link_libgcc_spec
= LINK_LIBGCC_SPEC
;
878 static const char *startfile_prefix_spec
= STARTFILE_PREFIX_SPEC
;
879 static const char *sysroot_spec
= SYSROOT_SPEC
;
880 static const char *sysroot_suffix_spec
= SYSROOT_SUFFIX_SPEC
;
881 static const char *sysroot_hdrs_suffix_spec
= SYSROOT_HEADERS_SUFFIX_SPEC
;
882 static const char *self_spec
= "";
884 /* Standard options to cpp, cc1, and as, to reduce duplication in specs.
885 There should be no need to override these in target dependent files,
886 but we need to copy them to the specs file so that newer versions
887 of the GCC driver can correctly drive older tool chains with the
888 appropriate -B options. */
890 /* When cpplib handles traditional preprocessing, get rid of this, and
891 call cc1 (or cc1obj in objc/lang-specs.h) from the main specs so
892 that we default the front end language better. */
893 static const char *trad_capable_cpp
=
894 "cc1 -E %{traditional|traditional-cpp:-traditional-cpp}";
896 /* We don't wrap .d files in %W{} since a missing .d file, and
897 therefore no dependency entry, confuses make into thinking a .o
898 file that happens to exist is up-to-date. */
899 static const char *cpp_unique_options
=
900 "%{!Q:-quiet} %{nostdinc*} %{C} %{CC} %{v} %{I*&F*} %{P} %I\
901 %{MD:-MD %{!o:%b.d}%{o*:%.d%*}}\
902 %{MMD:-MMD %{!o:%b.d}%{o*:%.d%*}}\
903 %{M} %{MM} %{MF*} %{MG} %{MP} %{MQ*} %{MT*}\
904 %{!E:%{!M:%{!MM:%{!MT:%{!MQ:%{MD|MMD:%{o*:-MQ %*}}}}}}}\
905 %{remap} %{g3|ggdb3|gstabs3|gcoff3|gxcoff3|gvms3:-dD}\
906 %{!iplugindir*:%{fplugin*:%:find-plugindir()}}\
907 %{H} %C %{D*&U*&A*} %{i*} %Z %i\
910 /* This contains cpp options which are common with cc1_options and are passed
911 only when preprocessing only to avoid duplication. We pass the cc1 spec
912 options to the preprocessor so that it the cc1 spec may manipulate
913 options used to set target flags. Those special target flags settings may
914 in turn cause preprocessor symbols to be defined specially. */
915 static const char *cpp_options
=
916 "%(cpp_unique_options) %1 %{m*} %{std*&ansi&trigraphs} %{W*&pedantic*} %{w}\
917 %{f*} %{g*:%{!g0:%{g*} %{!fno-working-directory:-fworking-directory}}} %{O*}\
918 %{undef} %{save-temps*:-fpch-preprocess}";
920 /* This contains cpp options which are not passed when the preprocessor
921 output will be used by another program. */
922 static const char *cpp_debug_options
= "%{d*}";
924 /* NB: This is shared amongst all front-ends, except for Ada. */
925 static const char *cc1_options
=
926 "%{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\
927 %{!iplugindir*:%{fplugin*:%:find-plugindir()}}\
928 %1 %{!Q:-quiet} %{!dumpbase:-dumpbase %B} %{d*} %{m*} %{aux-info*}\
929 %{fcompare-debug-second:%:compare-debug-auxbase-opt(%b)} \
930 %{!fcompare-debug-second:%{c|S:%{o*:-auxbase-strip %*}%{!o*:-auxbase %b}}}%{!c:%{!S:-auxbase %b}} \
931 %{g*} %{O*} %{W*&pedantic*} %{w} %{std*&ansi&trigraphs}\
932 %{v:-version} %{pg:-p} %{p} %{f*} %{undef}\
933 %{Qn:-fno-ident} %{Qy:} %{-help:--help}\
934 %{-target-help:--target-help}\
935 %{-version:--version}\
936 %{-help=*:--help=%*}\
937 %{!fsyntax-only:%{S:%W{o*}%{!o*:-o %b.s}}}\
938 %{fsyntax-only:-o %j} %{-param*}\
939 %{coverage:-fprofile-arcs -ftest-coverage}";
941 static const char *asm_options
=
942 "%{-target-help:%:print-asm-header()} "
944 /* If GNU AS is used, then convert -w (no warnings), -I, and -v
945 to the assembler equivalents. */
946 "%{v} %{w:-W} %{I*} "
948 ASM_COMPRESS_DEBUG_SPEC
949 "%a %Y %{c:%W{o*}%{!o*:-o %w%b%O}}%{!c:-o %d%w%u%O}";
951 static const char *invoke_as
=
952 #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT
954 %{fcompare-debug=*|fdump-final-insns=*:%:compare-debug-dump-opt()}\
955 %{!S:-o %|.s |\n as %(asm_options) %|.s %A }\
959 %{fcompare-debug=*|fdump-final-insns=*:%:compare-debug-dump-opt()}\
960 %{!S:-o %|.s |\n as %(asm_options) %m.s %A }\
964 /* Some compilers have limits on line lengths, and the multilib_select
965 and/or multilib_matches strings can be very long, so we build them at
967 static struct obstack multilib_obstack
;
968 static const char *multilib_select
;
969 static const char *multilib_matches
;
970 static const char *multilib_defaults
;
971 static const char *multilib_exclusions
;
972 static const char *multilib_reuse
;
974 /* Check whether a particular argument is a default argument. */
976 #ifndef MULTILIB_DEFAULTS
977 #define MULTILIB_DEFAULTS { "" }
980 static const char *const multilib_defaults_raw
[] = MULTILIB_DEFAULTS
;
982 #ifndef DRIVER_SELF_SPECS
983 #define DRIVER_SELF_SPECS ""
986 /* Linking to libgomp implies pthreads. This is particularly important
987 for targets that use different start files and suchlike. */
988 #ifndef GOMP_SELF_SPECS
989 #define GOMP_SELF_SPECS "%{fopenacc|fopenmp|ftree-parallelize-loops=*: " \
993 /* Likewise for -fgnu-tm. */
994 #ifndef GTM_SELF_SPECS
995 #define GTM_SELF_SPECS "%{fgnu-tm: -pthread}"
998 /* Likewise for -fcilkplus. */
999 #ifndef CILK_SELF_SPECS
1000 #define CILK_SELF_SPECS "%{fcilkplus: -pthread}"
1003 static const char *const driver_self_specs
[] = {
1004 "%{fdump-final-insns:-fdump-final-insns=.} %<fdump-final-insns",
1005 DRIVER_SELF_SPECS
, CONFIGURE_SPECS
, GOMP_SELF_SPECS
, GTM_SELF_SPECS
,
1009 #ifndef OPTION_DEFAULT_SPECS
1010 #define OPTION_DEFAULT_SPECS { "", "" }
1019 static const struct default_spec
1020 option_default_specs
[] = { OPTION_DEFAULT_SPECS
};
1024 struct user_specs
*next
;
1025 const char *filename
;
1028 static struct user_specs
*user_specs_head
, *user_specs_tail
;
1031 /* Record the mapping from file suffixes for compilation specs. */
1035 const char *suffix
; /* Use this compiler for input files
1036 whose names end in this suffix. */
1038 const char *spec
; /* To use this compiler, run this spec. */
1040 const char *cpp_spec
; /* If non-NULL, substitute this spec
1041 for `%C', rather than the usual
1043 const int combinable
; /* If nonzero, compiler can deal with
1044 multiple source files at once (IMA). */
1045 const int needs_preprocessing
; /* If nonzero, source files need to
1046 be run through a preprocessor. */
1049 /* Pointer to a vector of `struct compiler' that gives the spec for
1050 compiling a file, based on its suffix.
1051 A file that does not end in any of these suffixes will be passed
1052 unchanged to the loader and nothing else will be done to it.
1054 An entry containing two 0s is used to terminate the vector.
1056 If multiple entries match a file, the last matching one is used. */
1058 static struct compiler
*compilers
;
1060 /* Number of entries in `compilers', not counting the null terminator. */
1062 static int n_compilers
;
1064 /* The default list of file name suffixes and their compilation specs. */
1066 static const struct compiler default_compilers
[] =
1068 /* Add lists of suffixes of known languages here. If those languages
1069 were not present when we built the driver, we will hit these copies
1070 and be given a more meaningful error than "file not used since
1071 linking is not done". */
1072 {".m", "#Objective-C", 0, 0, 0}, {".mi", "#Objective-C", 0, 0, 0},
1073 {".mm", "#Objective-C++", 0, 0, 0}, {".M", "#Objective-C++", 0, 0, 0},
1074 {".mii", "#Objective-C++", 0, 0, 0},
1075 {".cc", "#C++", 0, 0, 0}, {".cxx", "#C++", 0, 0, 0},
1076 {".cpp", "#C++", 0, 0, 0}, {".cp", "#C++", 0, 0, 0},
1077 {".c++", "#C++", 0, 0, 0}, {".C", "#C++", 0, 0, 0},
1078 {".CPP", "#C++", 0, 0, 0}, {".ii", "#C++", 0, 0, 0},
1079 {".ads", "#Ada", 0, 0, 0}, {".adb", "#Ada", 0, 0, 0},
1080 {".f", "#Fortran", 0, 0, 0}, {".F", "#Fortran", 0, 0, 0},
1081 {".for", "#Fortran", 0, 0, 0}, {".FOR", "#Fortran", 0, 0, 0},
1082 {".ftn", "#Fortran", 0, 0, 0}, {".FTN", "#Fortran", 0, 0, 0},
1083 {".fpp", "#Fortran", 0, 0, 0}, {".FPP", "#Fortran", 0, 0, 0},
1084 {".f90", "#Fortran", 0, 0, 0}, {".F90", "#Fortran", 0, 0, 0},
1085 {".f95", "#Fortran", 0, 0, 0}, {".F95", "#Fortran", 0, 0, 0},
1086 {".f03", "#Fortran", 0, 0, 0}, {".F03", "#Fortran", 0, 0, 0},
1087 {".f08", "#Fortran", 0, 0, 0}, {".F08", "#Fortran", 0, 0, 0},
1088 {".r", "#Ratfor", 0, 0, 0},
1089 {".p", "#Pascal", 0, 0, 0}, {".pas", "#Pascal", 0, 0, 0},
1090 {".java", "#Java", 0, 0, 0}, {".class", "#Java", 0, 0, 0},
1091 {".zip", "#Java", 0, 0, 0}, {".jar", "#Java", 0, 0, 0},
1092 {".go", "#Go", 0, 1, 0},
1093 /* Next come the entries for C. */
1094 {".c", "@c", 0, 0, 1},
1096 /* cc1 has an integrated ISO C preprocessor. We should invoke the
1097 external preprocessor if -save-temps is given. */
1098 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\
1101 %eGNU C no longer supports -traditional without -E}\
1102 %{save-temps*|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
1103 %(cpp_options) -o %{save-temps*:%b.i} %{!save-temps*:%g.i} \n\
1104 cc1 -fpreprocessed %{save-temps*:%b.i} %{!save-temps*:%g.i} \
1106 %{!save-temps*:%{!traditional-cpp:%{!no-integrated-cpp:\
1107 cc1 %(cpp_unique_options) %(cc1_options)}}}\
1108 %{!fsyntax-only:%(invoke_as)}}}}", 0, 0, 1},
1110 "%{!E:%e-E or -x required when input is from standard input}\
1111 %(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)", 0, 0, 0},
1112 {".h", "@c-header", 0, 0, 0},
1114 /* cc1 has an integrated ISO C preprocessor. We should invoke the
1115 external preprocessor if -save-temps is given. */
1116 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\
1118 %{save-temps*|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
1119 %(cpp_options) -o %{save-temps*:%b.i} %{!save-temps*:%g.i} \n\
1120 cc1 -fpreprocessed %{save-temps*:%b.i} %{!save-temps*:%g.i} \
1122 %{!fdump-ada-spec*:-o %g.s %{!o*:--output-pch=%i.gch}\
1123 %W{o*:--output-pch=%*}}%V}\
1124 %{!save-temps*:%{!traditional-cpp:%{!no-integrated-cpp:\
1125 cc1 %(cpp_unique_options) %(cc1_options)\
1126 %{!fdump-ada-spec*:-o %g.s %{!o*:--output-pch=%i.gch}\
1127 %W{o*:--output-pch=%*}}%V}}}}}}", 0, 0, 0},
1128 {".i", "@cpp-output", 0, 0, 0},
1130 "%{!M:%{!MM:%{!E:cc1 -fpreprocessed %i %(cc1_options) %{!fsyntax-only:%(invoke_as)}}}}", 0, 0, 0},
1131 {".s", "@assembler", 0, 0, 0},
1133 "%{!M:%{!MM:%{!E:%{!S:as %(asm_debug) %(asm_options) %i %A }}}}", 0, 0, 0},
1134 {".sx", "@assembler-with-cpp", 0, 0, 0},
1135 {".S", "@assembler-with-cpp", 0, 0, 0},
1136 {"@assembler-with-cpp",
1137 #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT
1138 "%(trad_capable_cpp) -lang-asm %(cpp_options) -fno-directives-only\
1139 %{E|M|MM:%(cpp_debug_options)}\
1140 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\
1141 as %(asm_debug) %(asm_options) %|.s %A }}}}"
1143 "%(trad_capable_cpp) -lang-asm %(cpp_options) -fno-directives-only\
1144 %{E|M|MM:%(cpp_debug_options)}\
1145 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\
1146 as %(asm_debug) %(asm_options) %m.s %A }}}}"
1151 /* Mark end of table. */
1155 /* Number of elements in default_compilers, not counting the terminator. */
1157 static const int n_default_compilers
= ARRAY_SIZE (default_compilers
) - 1;
1159 typedef char *char_p
; /* For DEF_VEC_P. */
1161 /* A vector of options to give to the linker.
1162 These options are accumulated by %x,
1163 and substituted into the linker command with %X. */
1164 static vec
<char_p
> linker_options
;
1166 /* A vector of options to give to the assembler.
1167 These options are accumulated by -Wa,
1168 and substituted into the assembler command with %Y. */
1169 static vec
<char_p
> assembler_options
;
1171 /* A vector of options to give to the preprocessor.
1172 These options are accumulated by -Wp,
1173 and substituted into the preprocessor command with %Z. */
1174 static vec
<char_p
> preprocessor_options
;
1177 skip_whitespace (char *p
)
1181 /* A fully-blank line is a delimiter in the SPEC file and shouldn't
1182 be considered whitespace. */
1183 if (p
[0] == '\n' && p
[1] == '\n' && p
[2] == '\n')
1185 else if (*p
== '\n' || *p
== ' ' || *p
== '\t')
1199 /* Structures to keep track of prefixes to try when looking for files. */
1203 const char *prefix
; /* String to prepend to the path. */
1204 struct prefix_list
*next
; /* Next in linked list. */
1205 int require_machine_suffix
; /* Don't use without machine_suffix. */
1206 /* 2 means try both machine_suffix and just_machine_suffix. */
1207 int priority
; /* Sort key - priority within list. */
1208 int os_multilib
; /* 1 if OS multilib scheme should be used,
1209 0 for GCC multilib scheme. */
1214 struct prefix_list
*plist
; /* List of prefixes to try */
1215 int max_len
; /* Max length of a prefix in PLIST */
1216 const char *name
; /* Name of this list (used in config stuff) */
1219 /* List of prefixes to try when looking for executables. */
1221 static struct path_prefix exec_prefixes
= { 0, 0, "exec" };
1223 /* List of prefixes to try when looking for startup (crt0) files. */
1225 static struct path_prefix startfile_prefixes
= { 0, 0, "startfile" };
1227 /* List of prefixes to try when looking for include files. */
1229 static struct path_prefix include_prefixes
= { 0, 0, "include" };
1231 /* Suffix to attach to directories searched for commands.
1232 This looks like `MACHINE/VERSION/'. */
1234 static const char *machine_suffix
= 0;
1236 /* Suffix to attach to directories searched for commands.
1237 This is just `MACHINE/'. */
1239 static const char *just_machine_suffix
= 0;
1241 /* Adjusted value of GCC_EXEC_PREFIX envvar. */
1243 static const char *gcc_exec_prefix
;
1245 /* Adjusted value of standard_libexec_prefix. */
1247 static const char *gcc_libexec_prefix
;
1249 /* Default prefixes to attach to command names. */
1251 #ifndef STANDARD_STARTFILE_PREFIX_1
1252 #define STANDARD_STARTFILE_PREFIX_1 "/lib/"
1254 #ifndef STANDARD_STARTFILE_PREFIX_2
1255 #define STANDARD_STARTFILE_PREFIX_2 "/usr/lib/"
1258 #ifdef CROSS_DIRECTORY_STRUCTURE /* Don't use these prefixes for a cross compiler. */
1259 #undef MD_EXEC_PREFIX
1260 #undef MD_STARTFILE_PREFIX
1261 #undef MD_STARTFILE_PREFIX_1
1264 /* If no prefixes defined, use the null string, which will disable them. */
1265 #ifndef MD_EXEC_PREFIX
1266 #define MD_EXEC_PREFIX ""
1268 #ifndef MD_STARTFILE_PREFIX
1269 #define MD_STARTFILE_PREFIX ""
1271 #ifndef MD_STARTFILE_PREFIX_1
1272 #define MD_STARTFILE_PREFIX_1 ""
1275 /* These directories are locations set at configure-time based on the
1276 --prefix option provided to configure. Their initializers are
1277 defined in Makefile.in. These paths are not *directly* used when
1278 gcc_exec_prefix is set because, in that case, we know where the
1279 compiler has been installed, and use paths relative to that
1280 location instead. */
1281 static const char *const standard_exec_prefix
= STANDARD_EXEC_PREFIX
;
1282 static const char *const standard_libexec_prefix
= STANDARD_LIBEXEC_PREFIX
;
1283 static const char *const standard_bindir_prefix
= STANDARD_BINDIR_PREFIX
;
1284 static const char *const standard_startfile_prefix
= STANDARD_STARTFILE_PREFIX
;
1286 /* For native compilers, these are well-known paths containing
1287 components that may be provided by the system. For cross
1288 compilers, these paths are not used. */
1289 static const char *md_exec_prefix
= MD_EXEC_PREFIX
;
1290 static const char *md_startfile_prefix
= MD_STARTFILE_PREFIX
;
1291 static const char *md_startfile_prefix_1
= MD_STARTFILE_PREFIX_1
;
1292 static const char *const standard_startfile_prefix_1
1293 = STANDARD_STARTFILE_PREFIX_1
;
1294 static const char *const standard_startfile_prefix_2
1295 = STANDARD_STARTFILE_PREFIX_2
;
1297 /* A relative path to be used in finding the location of tools
1298 relative to the driver. */
1299 static const char *const tooldir_base_prefix
= TOOLDIR_BASE_PREFIX
;
1301 /* A prefix to be used when this is an accelerator compiler. */
1302 static const char *const accel_dir_suffix
= ACCEL_DIR_SUFFIX
;
1304 /* Subdirectory to use for locating libraries. Set by
1305 set_multilib_dir based on the compilation options. */
1307 static const char *multilib_dir
;
1309 /* Subdirectory to use for locating libraries in OS conventions. Set by
1310 set_multilib_dir based on the compilation options. */
1312 static const char *multilib_os_dir
;
1314 /* Subdirectory to use for locating libraries in multiarch conventions. Set by
1315 set_multilib_dir based on the compilation options. */
1317 static const char *multiarch_dir
;
1319 /* Structure to keep track of the specs that have been defined so far.
1320 These are accessed using %(specname) in a compiler or link
1325 /* The following 2 fields must be first */
1326 /* to allow EXTRA_SPECS to be initialized */
1327 const char *name
; /* name of the spec. */
1328 const char *ptr
; /* available ptr if no static pointer */
1330 /* The following fields are not initialized */
1331 /* by EXTRA_SPECS */
1332 const char **ptr_spec
; /* pointer to the spec itself. */
1333 struct spec_list
*next
; /* Next spec in linked list. */
1334 int name_len
; /* length of the name */
1335 bool user_p
; /* whether string come from file spec. */
1336 bool alloc_p
; /* whether string was allocated */
1339 #define INIT_STATIC_SPEC(NAME,PTR) \
1340 { NAME, NULL, PTR, (struct spec_list *) 0, sizeof (NAME) - 1, false, false }
1342 /* List of statically defined specs. */
1343 static struct spec_list static_specs
[] =
1345 INIT_STATIC_SPEC ("asm", &asm_spec
),
1346 INIT_STATIC_SPEC ("asm_debug", &asm_debug
),
1347 INIT_STATIC_SPEC ("asm_final", &asm_final_spec
),
1348 INIT_STATIC_SPEC ("asm_options", &asm_options
),
1349 INIT_STATIC_SPEC ("invoke_as", &invoke_as
),
1350 INIT_STATIC_SPEC ("cpp", &cpp_spec
),
1351 INIT_STATIC_SPEC ("cpp_options", &cpp_options
),
1352 INIT_STATIC_SPEC ("cpp_debug_options", &cpp_debug_options
),
1353 INIT_STATIC_SPEC ("cpp_unique_options", &cpp_unique_options
),
1354 INIT_STATIC_SPEC ("trad_capable_cpp", &trad_capable_cpp
),
1355 INIT_STATIC_SPEC ("cc1", &cc1_spec
),
1356 INIT_STATIC_SPEC ("cc1_options", &cc1_options
),
1357 INIT_STATIC_SPEC ("cc1plus", &cc1plus_spec
),
1358 INIT_STATIC_SPEC ("link_gcc_c_sequence", &link_gcc_c_sequence_spec
),
1359 INIT_STATIC_SPEC ("link_ssp", &link_ssp_spec
),
1360 INIT_STATIC_SPEC ("endfile", &endfile_spec
),
1361 INIT_STATIC_SPEC ("link", &link_spec
),
1362 INIT_STATIC_SPEC ("lib", &lib_spec
),
1363 INIT_STATIC_SPEC ("link_gomp", &link_gomp_spec
),
1364 INIT_STATIC_SPEC ("libgcc", &libgcc_spec
),
1365 INIT_STATIC_SPEC ("startfile", &startfile_spec
),
1366 INIT_STATIC_SPEC ("cross_compile", &cross_compile
),
1367 INIT_STATIC_SPEC ("version", &compiler_version
),
1368 INIT_STATIC_SPEC ("multilib", &multilib_select
),
1369 INIT_STATIC_SPEC ("multilib_defaults", &multilib_defaults
),
1370 INIT_STATIC_SPEC ("multilib_extra", &multilib_extra
),
1371 INIT_STATIC_SPEC ("multilib_matches", &multilib_matches
),
1372 INIT_STATIC_SPEC ("multilib_exclusions", &multilib_exclusions
),
1373 INIT_STATIC_SPEC ("multilib_options", &multilib_options
),
1374 INIT_STATIC_SPEC ("multilib_reuse", &multilib_reuse
),
1375 INIT_STATIC_SPEC ("linker", &linker_name_spec
),
1376 INIT_STATIC_SPEC ("linker_plugin_file", &linker_plugin_file_spec
),
1377 INIT_STATIC_SPEC ("lto_wrapper", <o_wrapper_spec
),
1378 INIT_STATIC_SPEC ("lto_gcc", <o_gcc_spec
),
1379 INIT_STATIC_SPEC ("link_libgcc", &link_libgcc_spec
),
1380 INIT_STATIC_SPEC ("md_exec_prefix", &md_exec_prefix
),
1381 INIT_STATIC_SPEC ("md_startfile_prefix", &md_startfile_prefix
),
1382 INIT_STATIC_SPEC ("md_startfile_prefix_1", &md_startfile_prefix_1
),
1383 INIT_STATIC_SPEC ("startfile_prefix_spec", &startfile_prefix_spec
),
1384 INIT_STATIC_SPEC ("sysroot_spec", &sysroot_spec
),
1385 INIT_STATIC_SPEC ("sysroot_suffix_spec", &sysroot_suffix_spec
),
1386 INIT_STATIC_SPEC ("sysroot_hdrs_suffix_spec", &sysroot_hdrs_suffix_spec
),
1387 INIT_STATIC_SPEC ("self_spec", &self_spec
),
1390 #ifdef EXTRA_SPECS /* additional specs needed */
1391 /* Structure to keep track of just the first two args of a spec_list.
1392 That is all that the EXTRA_SPECS macro gives us. */
1395 const char *const name
;
1396 const char *const ptr
;
1399 static const struct spec_list_1 extra_specs_1
[] = { EXTRA_SPECS
};
1400 static struct spec_list
*extra_specs
= (struct spec_list
*) 0;
1403 /* List of dynamically allocates specs that have been defined so far. */
1405 static struct spec_list
*specs
= (struct spec_list
*) 0;
1407 /* List of static spec functions. */
1409 static const struct spec_function static_spec_functions
[] =
1411 { "getenv", getenv_spec_function
},
1412 { "if-exists", if_exists_spec_function
},
1413 { "if-exists-else", if_exists_else_spec_function
},
1414 { "sanitize", sanitize_spec_function
},
1415 { "replace-outfile", replace_outfile_spec_function
},
1416 { "remove-outfile", remove_outfile_spec_function
},
1417 { "version-compare", version_compare_spec_function
},
1418 { "include", include_spec_function
},
1419 { "find-file", find_file_spec_function
},
1420 { "find-plugindir", find_plugindir_spec_function
},
1421 { "print-asm-header", print_asm_header_spec_function
},
1422 { "compare-debug-dump-opt", compare_debug_dump_opt_spec_function
},
1423 { "compare-debug-self-opt", compare_debug_self_opt_spec_function
},
1424 { "compare-debug-auxbase-opt", compare_debug_auxbase_opt_spec_function
},
1425 { "pass-through-libs", pass_through_libs_spec_func
},
1426 { "replace-extension", replace_extension_spec_func
},
1427 #ifdef EXTRA_SPEC_FUNCTIONS
1428 EXTRA_SPEC_FUNCTIONS
1433 static int processing_spec_function
;
1435 /* Add appropriate libgcc specs to OBSTACK, taking into account
1436 various permutations of -shared-libgcc, -shared, and such. */
1438 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
1440 #ifndef USE_LD_AS_NEEDED
1441 #define USE_LD_AS_NEEDED 0
1445 init_gcc_specs (struct obstack
*obstack
, const char *shared_name
,
1446 const char *static_name
, const char *eh_name
)
1450 buf
= concat ("%{static|static-libgcc:", static_name
, " ", eh_name
, "}"
1451 "%{!static:%{!static-libgcc:"
1452 #if USE_LD_AS_NEEDED
1453 "%{!shared-libgcc:",
1454 static_name
, " " LD_AS_NEEDED_OPTION
" ",
1455 shared_name
, " " LD_NO_AS_NEEDED_OPTION
1458 shared_name
, "%{!shared: ", static_name
, "}"
1462 "%{!shared-libgcc:", static_name
, " ", eh_name
, "}"
1463 "%{shared-libgcc:", shared_name
, " ", static_name
, "}"
1467 "%{shared-libgcc:", shared_name
, "}"
1468 "%{!shared-libgcc:", static_name
, "}"
1471 "%{shared:", shared_name
, "}"
1476 obstack_grow (obstack
, buf
, strlen (buf
));
1479 #endif /* ENABLE_SHARED_LIBGCC */
1481 /* Initialize the specs lookup routines. */
1486 struct spec_list
*next
= (struct spec_list
*) 0;
1487 struct spec_list
*sl
= (struct spec_list
*) 0;
1491 return; /* Already initialized. */
1494 fnotice (stderr
, "Using built-in specs.\n");
1497 extra_specs
= XCNEWVEC (struct spec_list
, ARRAY_SIZE (extra_specs_1
));
1499 for (i
= ARRAY_SIZE (extra_specs_1
) - 1; i
>= 0; i
--)
1501 sl
= &extra_specs
[i
];
1502 sl
->name
= extra_specs_1
[i
].name
;
1503 sl
->ptr
= extra_specs_1
[i
].ptr
;
1505 sl
->name_len
= strlen (sl
->name
);
1506 sl
->ptr_spec
= &sl
->ptr
;
1511 for (i
= ARRAY_SIZE (static_specs
) - 1; i
>= 0; i
--)
1513 sl
= &static_specs
[i
];
1518 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
1519 /* ??? If neither -shared-libgcc nor --static-libgcc was
1520 seen, then we should be making an educated guess. Some proposed
1521 heuristics for ELF include:
1523 (1) If "-Wl,--export-dynamic", then it's a fair bet that the
1524 program will be doing dynamic loading, which will likely
1525 need the shared libgcc.
1527 (2) If "-ldl", then it's also a fair bet that we're doing
1530 (3) For each ET_DYN we're linking against (either through -lfoo
1531 or /some/path/foo.so), check to see whether it or one of
1532 its dependencies depends on a shared libgcc.
1536 If the runtime is fixed to look for program headers instead
1537 of calling __register_frame_info at all, for each object,
1538 use the shared libgcc if any EH symbol referenced.
1540 If crtstuff is fixed to not invoke __register_frame_info
1541 automatically, for each object, use the shared libgcc if
1542 any non-empty unwind section found.
1544 Doing any of this probably requires invoking an external program to
1545 do the actual object file scanning. */
1547 const char *p
= libgcc_spec
;
1550 /* Transform the extant libgcc_spec into one that uses the shared libgcc
1551 when given the proper command line arguments. */
1554 if (in_sep
&& *p
== '-' && strncmp (p
, "-lgcc", 5) == 0)
1556 init_gcc_specs (&obstack
,
1558 #ifdef USE_LIBUNWIND_EXCEPTIONS
1564 #ifdef USE_LIBUNWIND_EXCEPTIONS
1565 # ifdef HAVE_LD_STATIC_DYNAMIC
1566 " %{!static:" LD_STATIC_OPTION
"} -lunwind"
1567 " %{!static:" LD_DYNAMIC_OPTION
"}"
1577 else if (in_sep
&& *p
== 'l' && strncmp (p
, "libgcc.a%s", 10) == 0)
1579 /* Ug. We don't know shared library extensions. Hope that
1580 systems that use this form don't do shared libraries. */
1581 init_gcc_specs (&obstack
,
1585 #ifdef USE_LIBUNWIND_EXCEPTIONS
1594 obstack_1grow (&obstack
, *p
);
1595 in_sep
= (*p
== ' ');
1600 obstack_1grow (&obstack
, '\0');
1601 libgcc_spec
= XOBFINISH (&obstack
, const char *);
1604 #ifdef USE_AS_TRADITIONAL_FORMAT
1605 /* Prepend "--traditional-format" to whatever asm_spec we had before. */
1607 static const char tf
[] = "--traditional-format ";
1608 obstack_grow (&obstack
, tf
, sizeof (tf
) - 1);
1609 obstack_grow0 (&obstack
, asm_spec
, strlen (asm_spec
));
1610 asm_spec
= XOBFINISH (&obstack
, const char *);
1614 #if defined LINK_EH_SPEC || defined LINK_BUILDID_SPEC || \
1615 defined LINKER_HASH_STYLE
1616 # ifdef LINK_BUILDID_SPEC
1617 /* Prepend LINK_BUILDID_SPEC to whatever link_spec we had before. */
1618 obstack_grow (&obstack
, LINK_BUILDID_SPEC
, sizeof (LINK_BUILDID_SPEC
) - 1);
1620 # ifdef LINK_EH_SPEC
1621 /* Prepend LINK_EH_SPEC to whatever link_spec we had before. */
1622 obstack_grow (&obstack
, LINK_EH_SPEC
, sizeof (LINK_EH_SPEC
) - 1);
1624 # ifdef LINKER_HASH_STYLE
1625 /* Prepend --hash-style=LINKER_HASH_STYLE to whatever link_spec we had
1628 static const char hash_style
[] = "--hash-style=";
1629 obstack_grow (&obstack
, hash_style
, sizeof (hash_style
) - 1);
1630 obstack_grow (&obstack
, LINKER_HASH_STYLE
, sizeof (LINKER_HASH_STYLE
) - 1);
1631 obstack_1grow (&obstack
, ' ');
1634 obstack_grow0 (&obstack
, link_spec
, strlen (link_spec
));
1635 link_spec
= XOBFINISH (&obstack
, const char *);
1641 /* Change the value of spec NAME to SPEC. If SPEC is empty, then the spec is
1642 removed; If the spec starts with a + then SPEC is added to the end of the
1646 set_spec (const char *name
, const char *spec
, bool user_p
)
1648 struct spec_list
*sl
;
1649 const char *old_spec
;
1650 int name_len
= strlen (name
);
1653 /* If this is the first call, initialize the statically allocated specs. */
1656 struct spec_list
*next
= (struct spec_list
*) 0;
1657 for (i
= ARRAY_SIZE (static_specs
) - 1; i
>= 0; i
--)
1659 sl
= &static_specs
[i
];
1666 /* See if the spec already exists. */
1667 for (sl
= specs
; sl
; sl
= sl
->next
)
1668 if (name_len
== sl
->name_len
&& !strcmp (sl
->name
, name
))
1673 /* Not found - make it. */
1674 sl
= XNEW (struct spec_list
);
1675 sl
->name
= xstrdup (name
);
1676 sl
->name_len
= name_len
;
1677 sl
->ptr_spec
= &sl
->ptr
;
1679 *(sl
->ptr_spec
) = "";
1684 old_spec
= *(sl
->ptr_spec
);
1685 *(sl
->ptr_spec
) = ((spec
[0] == '+' && ISSPACE ((unsigned char)spec
[1]))
1686 ? concat (old_spec
, spec
+ 1, NULL
)
1691 fnotice (stderr
, "Setting spec %s to '%s'\n\n", name
, *(sl
->ptr_spec
));
1694 /* Free the old spec. */
1695 if (old_spec
&& sl
->alloc_p
)
1696 free (CONST_CAST (char *, old_spec
));
1698 sl
->user_p
= user_p
;
1702 /* Accumulate a command (program name and args), and run it. */
1704 typedef const char *const_char_p
; /* For DEF_VEC_P. */
1706 /* Vector of pointers to arguments in the current line of specifications. */
1708 static vec
<const_char_p
> argbuf
;
1710 /* Position in the argbuf vector containing the name of the output file
1711 (the value associated with the "-o" flag). */
1713 static int have_o_argbuf_index
= 0;
1715 /* Were the options -c, -S or -E passed. */
1716 static int have_c
= 0;
1718 /* Was the option -o passed. */
1719 static int have_o
= 0;
1721 /* This is the list of suffixes and codes (%g/%u/%U/%j) and the associated
1722 temp file. If the HOST_BIT_BUCKET is used for %j, no entry is made for
1725 static struct temp_name
{
1726 const char *suffix
; /* suffix associated with the code. */
1727 int length
; /* strlen (suffix). */
1728 int unique
; /* Indicates whether %g or %u/%U was used. */
1729 const char *filename
; /* associated filename. */
1730 int filename_length
; /* strlen (filename). */
1731 struct temp_name
*next
;
1734 /* Number of commands executed so far. */
1736 static int execution_count
;
1738 /* Number of commands that exited with a signal. */
1740 static int signal_count
;
1742 /* Allocate the argument vector. */
1750 /* Clear out the vector of arguments (after a command is executed). */
1755 argbuf
.truncate (0);
1758 /* Add one argument to the vector at the end.
1759 This is done when a space is seen or at the end of the line.
1760 If DELETE_ALWAYS is nonzero, the arg is a filename
1761 and the file should be deleted eventually.
1762 If DELETE_FAILURE is nonzero, the arg is a filename
1763 and the file should be deleted if this compilation fails. */
1766 store_arg (const char *arg
, int delete_always
, int delete_failure
)
1768 argbuf
.safe_push (arg
);
1770 if (strcmp (arg
, "-o") == 0)
1771 have_o_argbuf_index
= argbuf
.length ();
1772 if (delete_always
|| delete_failure
)
1775 /* If the temporary file we should delete is specified as
1776 part of a joined argument extract the filename. */
1778 && (p
= strrchr (arg
, '=')))
1780 record_temp_file (arg
, delete_always
, delete_failure
);
1784 /* Load specs from a file name named FILENAME, replacing occurrences of
1785 various different types of line-endings, \r\n, \n\r and just \r, with
1789 load_specs (const char *filename
)
1793 struct stat statbuf
;
1800 fnotice (stderr
, "Reading specs from %s\n", filename
);
1802 /* Open and stat the file. */
1803 desc
= open (filename
, O_RDONLY
, 0);
1805 pfatal_with_name (filename
);
1806 if (stat (filename
, &statbuf
) < 0)
1807 pfatal_with_name (filename
);
1809 /* Read contents of file into BUFFER. */
1810 buffer
= XNEWVEC (char, statbuf
.st_size
+ 1);
1811 readlen
= read (desc
, buffer
, (unsigned) statbuf
.st_size
);
1813 pfatal_with_name (filename
);
1814 buffer
[readlen
] = 0;
1817 specs
= XNEWVEC (char, readlen
+ 1);
1819 for (buffer_p
= buffer
; buffer_p
&& *buffer_p
; buffer_p
++)
1825 if (buffer_p
> buffer
&& *(buffer_p
- 1) == '\n') /* \n\r */
1827 else if (*(buffer_p
+ 1) == '\n') /* \r\n */
1841 /* Read compilation specs from a file named FILENAME,
1842 replacing the default ones.
1844 A suffix which starts with `*' is a definition for
1845 one of the machine-specific sub-specs. The "suffix" should be
1846 *asm, *cc1, *cpp, *link, *startfile, etc.
1847 The corresponding spec is stored in asm_spec, etc.,
1848 rather than in the `compilers' vector.
1850 Anything invalid in the file is a fatal error. */
1853 read_specs (const char *filename
, bool main_p
, bool user_p
)
1858 buffer
= load_specs (filename
);
1860 /* Scan BUFFER for specs, putting them in the vector. */
1866 char *in
, *out
, *p1
, *p2
, *p3
;
1868 /* Advance P in BUFFER to the next nonblank nocomment line. */
1869 p
= skip_whitespace (p
);
1873 /* Is this a special command that starts with '%'? */
1874 /* Don't allow this for the main specs file, since it would
1875 encourage people to overwrite it. */
1876 if (*p
== '%' && !main_p
)
1879 while (*p
&& *p
!= '\n')
1885 if (!strncmp (p1
, "%include", sizeof ("%include") - 1)
1886 && (p1
[sizeof "%include" - 1] == ' '
1887 || p1
[sizeof "%include" - 1] == '\t'))
1891 p1
+= sizeof ("%include");
1892 while (*p1
== ' ' || *p1
== '\t')
1895 if (*p1
++ != '<' || p
[-2] != '>')
1896 fatal_error ("specs %%include syntax malformed after "
1898 (long) (p1
- buffer
+ 1));
1901 new_filename
= find_a_file (&startfile_prefixes
, p1
, R_OK
, true);
1902 read_specs (new_filename
? new_filename
: p1
, false, user_p
);
1905 else if (!strncmp (p1
, "%include_noerr", sizeof "%include_noerr" - 1)
1906 && (p1
[sizeof "%include_noerr" - 1] == ' '
1907 || p1
[sizeof "%include_noerr" - 1] == '\t'))
1911 p1
+= sizeof "%include_noerr";
1912 while (*p1
== ' ' || *p1
== '\t')
1915 if (*p1
++ != '<' || p
[-2] != '>')
1916 fatal_error ("specs %%include syntax malformed after "
1918 (long) (p1
- buffer
+ 1));
1921 new_filename
= find_a_file (&startfile_prefixes
, p1
, R_OK
, true);
1923 read_specs (new_filename
, false, user_p
);
1924 else if (verbose_flag
)
1925 fnotice (stderr
, "could not find specs file %s\n", p1
);
1928 else if (!strncmp (p1
, "%rename", sizeof "%rename" - 1)
1929 && (p1
[sizeof "%rename" - 1] == ' '
1930 || p1
[sizeof "%rename" - 1] == '\t'))
1933 struct spec_list
*sl
;
1934 struct spec_list
*newsl
;
1936 /* Get original name. */
1937 p1
+= sizeof "%rename";
1938 while (*p1
== ' ' || *p1
== '\t')
1941 if (! ISALPHA ((unsigned char) *p1
))
1942 fatal_error ("specs %%rename syntax malformed after "
1944 (long) (p1
- buffer
));
1947 while (*p2
&& !ISSPACE ((unsigned char) *p2
))
1950 if (*p2
!= ' ' && *p2
!= '\t')
1951 fatal_error ("specs %%rename syntax malformed after "
1953 (long) (p2
- buffer
));
1957 while (*p2
== ' ' || *p2
== '\t')
1960 if (! ISALPHA ((unsigned char) *p2
))
1961 fatal_error ("specs %%rename syntax malformed after "
1963 (long) (p2
- buffer
));
1965 /* Get new spec name. */
1967 while (*p3
&& !ISSPACE ((unsigned char) *p3
))
1971 fatal_error ("specs %%rename syntax malformed after "
1973 (long) (p3
- buffer
));
1976 for (sl
= specs
; sl
; sl
= sl
->next
)
1977 if (name_len
== sl
->name_len
&& !strcmp (sl
->name
, p1
))
1981 fatal_error ("specs %s spec was not found to be renamed", p1
);
1983 if (strcmp (p1
, p2
) == 0)
1986 for (newsl
= specs
; newsl
; newsl
= newsl
->next
)
1987 if (strcmp (newsl
->name
, p2
) == 0)
1988 fatal_error ("%s: attempt to rename spec %qs to "
1989 "already defined spec %qs",
1994 fnotice (stderr
, "rename spec %s to %s\n", p1
, p2
);
1996 fnotice (stderr
, "spec is '%s'\n\n", *(sl
->ptr_spec
));
2000 set_spec (p2
, *(sl
->ptr_spec
), user_p
);
2002 free (CONST_CAST (char *, *(sl
->ptr_spec
)));
2004 *(sl
->ptr_spec
) = "";
2009 fatal_error ("specs unknown %% command after %ld characters",
2010 (long) (p1
- buffer
));
2013 /* Find the colon that should end the suffix. */
2015 while (*p1
&& *p1
!= ':' && *p1
!= '\n')
2018 /* The colon shouldn't be missing. */
2020 fatal_error ("specs file malformed after %ld characters",
2021 (long) (p1
- buffer
));
2023 /* Skip back over trailing whitespace. */
2025 while (p2
> buffer
&& (p2
[-1] == ' ' || p2
[-1] == '\t'))
2028 /* Copy the suffix to a string. */
2029 suffix
= save_string (p
, p2
- p
);
2030 /* Find the next line. */
2031 p
= skip_whitespace (p1
+ 1);
2033 fatal_error ("specs file malformed after %ld characters",
2034 (long) (p
- buffer
));
2037 /* Find next blank line or end of string. */
2038 while (*p1
&& !(*p1
== '\n' && (p1
[1] == '\n' || p1
[1] == '\0')))
2041 /* Specs end at the blank line and do not include the newline. */
2042 spec
= save_string (p
, p1
- p
);
2045 /* Delete backslash-newline sequences from the spec. */
2050 if (in
[0] == '\\' && in
[1] == '\n')
2052 else if (in
[0] == '#')
2053 while (*in
&& *in
!= '\n')
2061 if (suffix
[0] == '*')
2063 if (! strcmp (suffix
, "*link_command"))
2064 link_command_spec
= spec
;
2066 set_spec (suffix
+ 1, spec
, user_p
);
2070 /* Add this pair to the vector. */
2072 = XRESIZEVEC (struct compiler
, compilers
, n_compilers
+ 2);
2074 compilers
[n_compilers
].suffix
= suffix
;
2075 compilers
[n_compilers
].spec
= spec
;
2077 memset (&compilers
[n_compilers
], 0, sizeof compilers
[n_compilers
]);
2081 link_command_spec
= spec
;
2084 if (link_command_spec
== 0)
2085 fatal_error ("spec file has no spec for linking");
2088 /* Record the names of temporary files we tell compilers to write,
2089 and delete them at the end of the run. */
2091 /* This is the common prefix we use to make temp file names.
2092 It is chosen once for each run of this program.
2093 It is substituted into a spec by %g or %j.
2094 Thus, all temp file names contain this prefix.
2095 In practice, all temp file names start with this prefix.
2097 This prefix comes from the envvar TMPDIR if it is defined;
2098 otherwise, from the P_tmpdir macro if that is defined;
2099 otherwise, in /usr/tmp or /tmp;
2100 or finally the current directory if all else fails. */
2102 static const char *temp_filename
;
2104 /* Length of the prefix. */
2106 static int temp_filename_length
;
2108 /* Define the list of temporary files to delete. */
2113 struct temp_file
*next
;
2116 /* Queue of files to delete on success or failure of compilation. */
2117 static struct temp_file
*always_delete_queue
;
2118 /* Queue of files to delete on failure of compilation. */
2119 static struct temp_file
*failure_delete_queue
;
2121 /* Record FILENAME as a file to be deleted automatically.
2122 ALWAYS_DELETE nonzero means delete it if all compilation succeeds;
2123 otherwise delete it in any case.
2124 FAIL_DELETE nonzero means delete it if a compilation step fails;
2125 otherwise delete it in any case. */
2128 record_temp_file (const char *filename
, int always_delete
, int fail_delete
)
2130 char *const name
= xstrdup (filename
);
2134 struct temp_file
*temp
;
2135 for (temp
= always_delete_queue
; temp
; temp
= temp
->next
)
2136 if (! filename_cmp (name
, temp
->name
))
2139 temp
= XNEW (struct temp_file
);
2140 temp
->next
= always_delete_queue
;
2142 always_delete_queue
= temp
;
2149 struct temp_file
*temp
;
2150 for (temp
= failure_delete_queue
; temp
; temp
= temp
->next
)
2151 if (! filename_cmp (name
, temp
->name
))
2157 temp
= XNEW (struct temp_file
);
2158 temp
->next
= failure_delete_queue
;
2160 failure_delete_queue
= temp
;
2166 /* Delete all the temporary files whose names we previously recorded. */
2168 #ifndef DELETE_IF_ORDINARY
2169 #define DELETE_IF_ORDINARY(NAME,ST,VERBOSE_FLAG) \
2172 if (stat (NAME, &ST) >= 0 && S_ISREG (ST.st_mode)) \
2173 if (unlink (NAME) < 0) \
2175 perror_with_name (NAME); \
2180 delete_if_ordinary (const char *name
)
2186 printf ("Delete %s? (y or n) ", name
);
2190 while ((c
= getchar ()) != '\n' && c
!= EOF
)
2193 if (i
== 'y' || i
== 'Y')
2195 DELETE_IF_ORDINARY (name
, st
, verbose_flag
);
2199 delete_temp_files (void)
2201 struct temp_file
*temp
;
2203 for (temp
= always_delete_queue
; temp
; temp
= temp
->next
)
2204 delete_if_ordinary (temp
->name
);
2205 always_delete_queue
= 0;
2208 /* Delete all the files to be deleted on error. */
2211 delete_failure_queue (void)
2213 struct temp_file
*temp
;
2215 for (temp
= failure_delete_queue
; temp
; temp
= temp
->next
)
2216 delete_if_ordinary (temp
->name
);
2220 clear_failure_queue (void)
2222 failure_delete_queue
= 0;
2225 /* Call CALLBACK for each path in PATHS, breaking out early if CALLBACK
2227 If DO_MULTI is true iterate over the paths twice, first with multilib
2228 suffix then without, otherwise iterate over the paths once without
2229 adding a multilib suffix. When DO_MULTI is true, some attempt is made
2230 to avoid visiting the same path twice, but we could do better. For
2231 instance, /usr/lib/../lib is considered different from /usr/lib.
2232 At least EXTRA_SPACE chars past the end of the path passed to
2233 CALLBACK are available for use by the callback.
2234 CALLBACK_INFO allows extra parameters to be passed to CALLBACK.
2236 Returns the value returned by CALLBACK. */
2239 for_each_path (const struct path_prefix
*paths
,
2242 void *(*callback
) (char *, void *),
2243 void *callback_info
)
2245 struct prefix_list
*pl
;
2246 const char *multi_dir
= NULL
;
2247 const char *multi_os_dir
= NULL
;
2248 const char *multiarch_suffix
= NULL
;
2249 const char *multi_suffix
;
2250 const char *just_multi_suffix
;
2253 bool skip_multi_dir
= false;
2254 bool skip_multi_os_dir
= false;
2256 multi_suffix
= machine_suffix
;
2257 just_multi_suffix
= just_machine_suffix
;
2258 if (do_multi
&& multilib_dir
&& strcmp (multilib_dir
, ".") != 0)
2260 multi_dir
= concat (multilib_dir
, dir_separator_str
, NULL
);
2261 multi_suffix
= concat (multi_suffix
, multi_dir
, NULL
);
2262 just_multi_suffix
= concat (just_multi_suffix
, multi_dir
, NULL
);
2264 if (do_multi
&& multilib_os_dir
&& strcmp (multilib_os_dir
, ".") != 0)
2265 multi_os_dir
= concat (multilib_os_dir
, dir_separator_str
, NULL
);
2267 multiarch_suffix
= concat (multiarch_dir
, dir_separator_str
, NULL
);
2271 size_t multi_dir_len
= 0;
2272 size_t multi_os_dir_len
= 0;
2273 size_t multiarch_len
= 0;
2275 size_t just_suffix_len
;
2279 multi_dir_len
= strlen (multi_dir
);
2281 multi_os_dir_len
= strlen (multi_os_dir
);
2282 if (multiarch_suffix
)
2283 multiarch_len
= strlen (multiarch_suffix
);
2284 suffix_len
= strlen (multi_suffix
);
2285 just_suffix_len
= strlen (just_multi_suffix
);
2289 len
= paths
->max_len
+ extra_space
+ 1;
2290 len
+= MAX (MAX (suffix_len
, multi_os_dir_len
), multiarch_len
);
2291 path
= XNEWVEC (char, len
);
2294 for (pl
= paths
->plist
; pl
!= 0; pl
= pl
->next
)
2296 len
= strlen (pl
->prefix
);
2297 memcpy (path
, pl
->prefix
, len
);
2299 /* Look first in MACHINE/VERSION subdirectory. */
2300 if (!skip_multi_dir
)
2302 memcpy (path
+ len
, multi_suffix
, suffix_len
+ 1);
2303 ret
= callback (path
, callback_info
);
2308 /* Some paths are tried with just the machine (ie. target)
2309 subdir. This is used for finding as, ld, etc. */
2311 && pl
->require_machine_suffix
== 2)
2313 memcpy (path
+ len
, just_multi_suffix
, just_suffix_len
+ 1);
2314 ret
= callback (path
, callback_info
);
2319 /* Now try the multiarch path. */
2321 && !pl
->require_machine_suffix
&& multiarch_dir
)
2323 memcpy (path
+ len
, multiarch_suffix
, multiarch_len
+ 1);
2324 ret
= callback (path
, callback_info
);
2329 /* Now try the base path. */
2330 if (!pl
->require_machine_suffix
2331 && !(pl
->os_multilib
? skip_multi_os_dir
: skip_multi_dir
))
2333 const char *this_multi
;
2334 size_t this_multi_len
;
2336 if (pl
->os_multilib
)
2338 this_multi
= multi_os_dir
;
2339 this_multi_len
= multi_os_dir_len
;
2343 this_multi
= multi_dir
;
2344 this_multi_len
= multi_dir_len
;
2348 memcpy (path
+ len
, this_multi
, this_multi_len
+ 1);
2352 ret
= callback (path
, callback_info
);
2360 if (multi_dir
== NULL
&& multi_os_dir
== NULL
)
2363 /* Run through the paths again, this time without multilibs.
2364 Don't repeat any we have already seen. */
2367 free (CONST_CAST (char *, multi_dir
));
2369 free (CONST_CAST (char *, multi_suffix
));
2370 multi_suffix
= machine_suffix
;
2371 free (CONST_CAST (char *, just_multi_suffix
));
2372 just_multi_suffix
= just_machine_suffix
;
2375 skip_multi_dir
= true;
2378 free (CONST_CAST (char *, multi_os_dir
));
2379 multi_os_dir
= NULL
;
2382 skip_multi_os_dir
= true;
2387 free (CONST_CAST (char *, multi_dir
));
2388 free (CONST_CAST (char *, multi_suffix
));
2389 free (CONST_CAST (char *, just_multi_suffix
));
2392 free (CONST_CAST (char *, multi_os_dir
));
2398 /* Callback for build_search_list. Adds path to obstack being built. */
2400 struct add_to_obstack_info
{
2407 add_to_obstack (char *path
, void *data
)
2409 struct add_to_obstack_info
*info
= (struct add_to_obstack_info
*) data
;
2411 if (info
->check_dir
&& !is_directory (path
, false))
2414 if (!info
->first_time
)
2415 obstack_1grow (info
->ob
, PATH_SEPARATOR
);
2417 obstack_grow (info
->ob
, path
, strlen (path
));
2419 info
->first_time
= false;
2423 /* Add or change the value of an environment variable, outputting the
2424 change to standard error if in verbose mode. */
2426 xputenv (const char *string
)
2429 fnotice (stderr
, "%s\n", string
);
2430 putenv (CONST_CAST (char *, string
));
2433 /* Build a list of search directories from PATHS.
2434 PREFIX is a string to prepend to the list.
2435 If CHECK_DIR_P is true we ensure the directory exists.
2436 If DO_MULTI is true, multilib paths are output first, then
2438 This is used mostly by putenv_from_prefixes so we use `collect_obstack'.
2439 It is also used by the --print-search-dirs flag. */
2442 build_search_list (const struct path_prefix
*paths
, const char *prefix
,
2443 bool check_dir
, bool do_multi
)
2445 struct add_to_obstack_info info
;
2447 info
.ob
= &collect_obstack
;
2448 info
.check_dir
= check_dir
;
2449 info
.first_time
= true;
2451 obstack_grow (&collect_obstack
, prefix
, strlen (prefix
));
2452 obstack_1grow (&collect_obstack
, '=');
2454 for_each_path (paths
, do_multi
, 0, add_to_obstack
, &info
);
2456 obstack_1grow (&collect_obstack
, '\0');
2457 return XOBFINISH (&collect_obstack
, char *);
2460 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
2464 putenv_from_prefixes (const struct path_prefix
*paths
, const char *env_var
,
2467 xputenv (build_search_list (paths
, env_var
, true, do_multi
));
2470 /* Check whether NAME can be accessed in MODE. This is like access,
2471 except that it never considers directories to be executable. */
2474 access_check (const char *name
, int mode
)
2480 if (stat (name
, &st
) < 0
2481 || S_ISDIR (st
.st_mode
))
2485 return access (name
, mode
);
2488 /* Callback for find_a_file. Appends the file name to the directory
2489 path. If the resulting file exists in the right mode, return the
2490 full pathname to the file. */
2492 struct file_at_path_info
{
2501 file_at_path (char *path
, void *data
)
2503 struct file_at_path_info
*info
= (struct file_at_path_info
*) data
;
2504 size_t len
= strlen (path
);
2506 memcpy (path
+ len
, info
->name
, info
->name_len
);
2507 len
+= info
->name_len
;
2509 /* Some systems have a suffix for executable files.
2510 So try appending that first. */
2511 if (info
->suffix_len
)
2513 memcpy (path
+ len
, info
->suffix
, info
->suffix_len
+ 1);
2514 if (access_check (path
, info
->mode
) == 0)
2519 if (access_check (path
, info
->mode
) == 0)
2525 /* Search for NAME using the prefix list PREFIXES. MODE is passed to
2526 access to check permissions. If DO_MULTI is true, search multilib
2527 paths then non-multilib paths, otherwise do not search multilib paths.
2528 Return 0 if not found, otherwise return its name, allocated with malloc. */
2531 find_a_file (const struct path_prefix
*pprefix
, const char *name
, int mode
,
2534 struct file_at_path_info info
;
2536 #ifdef DEFAULT_ASSEMBLER
2537 if (! strcmp (name
, "as") && access (DEFAULT_ASSEMBLER
, mode
) == 0)
2538 return xstrdup (DEFAULT_ASSEMBLER
);
2541 #ifdef DEFAULT_LINKER
2542 if (! strcmp (name
, "ld") && access (DEFAULT_LINKER
, mode
) == 0)
2543 return xstrdup (DEFAULT_LINKER
);
2546 /* Determine the filename to execute (special case for absolute paths). */
2548 if (IS_ABSOLUTE_PATH (name
))
2550 if (access (name
, mode
) == 0)
2551 return xstrdup (name
);
2557 info
.suffix
= (mode
& X_OK
) != 0 ? HOST_EXECUTABLE_SUFFIX
: "";
2558 info
.name_len
= strlen (info
.name
);
2559 info
.suffix_len
= strlen (info
.suffix
);
2562 return (char*) for_each_path (pprefix
, do_multi
,
2563 info
.name_len
+ info
.suffix_len
,
2564 file_at_path
, &info
);
2567 /* Ranking of prefixes in the sort list. -B prefixes are put before
2570 enum path_prefix_priority
2572 PREFIX_PRIORITY_B_OPT
,
2573 PREFIX_PRIORITY_LAST
2576 /* Add an entry for PREFIX in PLIST. The PLIST is kept in ascending
2577 order according to PRIORITY. Within each PRIORITY, new entries are
2580 If WARN is nonzero, we will warn if no file is found
2581 through this prefix. WARN should point to an int
2582 which will be set to 1 if this entry is used.
2584 COMPONENT is the value to be passed to update_path.
2586 REQUIRE_MACHINE_SUFFIX is 1 if this prefix can't be used without
2587 the complete value of machine_suffix.
2588 2 means try both machine_suffix and just_machine_suffix. */
2591 add_prefix (struct path_prefix
*pprefix
, const char *prefix
,
2592 const char *component
, /* enum prefix_priority */ int priority
,
2593 int require_machine_suffix
, int os_multilib
)
2595 struct prefix_list
*pl
, **prev
;
2598 for (prev
= &pprefix
->plist
;
2599 (*prev
) != NULL
&& (*prev
)->priority
<= priority
;
2600 prev
= &(*prev
)->next
)
2603 /* Keep track of the longest prefix. */
2605 prefix
= update_path (prefix
, component
);
2606 len
= strlen (prefix
);
2607 if (len
> pprefix
->max_len
)
2608 pprefix
->max_len
= len
;
2610 pl
= XNEW (struct prefix_list
);
2611 pl
->prefix
= prefix
;
2612 pl
->require_machine_suffix
= require_machine_suffix
;
2613 pl
->priority
= priority
;
2614 pl
->os_multilib
= os_multilib
;
2616 /* Insert after PREV. */
2621 /* Same as add_prefix, but prepending target_system_root to prefix. */
2622 /* The target_system_root prefix has been relocated by gcc_exec_prefix. */
2624 add_sysrooted_prefix (struct path_prefix
*pprefix
, const char *prefix
,
2625 const char *component
,
2626 /* enum prefix_priority */ int priority
,
2627 int require_machine_suffix
, int os_multilib
)
2629 if (!IS_ABSOLUTE_PATH (prefix
))
2630 fatal_error ("system path %qs is not absolute", prefix
);
2632 if (target_system_root
)
2634 char *sysroot_no_trailing_dir_separator
= xstrdup (target_system_root
);
2635 size_t sysroot_len
= strlen (target_system_root
);
2638 && target_system_root
[sysroot_len
- 1] == DIR_SEPARATOR
)
2639 sysroot_no_trailing_dir_separator
[sysroot_len
- 1] = '\0';
2641 if (target_sysroot_suffix
)
2642 prefix
= concat (sysroot_no_trailing_dir_separator
,
2643 target_sysroot_suffix
, prefix
, NULL
);
2645 prefix
= concat (sysroot_no_trailing_dir_separator
, prefix
, NULL
);
2647 free (sysroot_no_trailing_dir_separator
);
2649 /* We have to override this because GCC's notion of sysroot
2650 moves along with GCC. */
2654 add_prefix (pprefix
, prefix
, component
, priority
,
2655 require_machine_suffix
, os_multilib
);
2658 /* Execute the command specified by the arguments on the current line of spec.
2659 When using pipes, this includes several piped-together commands
2660 with `|' between them.
2662 Return 0 if successful, -1 if failed. */
2668 int n_commands
; /* # of command. */
2670 struct pex_obj
*pex
;
2673 const char *prog
; /* program name. */
2674 const char **argv
; /* vector of args. */
2678 struct command
*commands
; /* each command buffer with above info. */
2680 gcc_assert (!processing_spec_function
);
2684 string
= find_a_file (&exec_prefixes
,
2685 argbuf
[0], X_OK
, false);
2688 insert_wrapper (wrapper_string
);
2691 /* Count # of piped commands. */
2692 for (n_commands
= 1, i
= 0; argbuf
.iterate (i
, &arg
); i
++)
2693 if (strcmp (arg
, "|") == 0)
2696 /* Get storage for each command. */
2697 commands
= (struct command
*) alloca (n_commands
* sizeof (struct command
));
2699 /* Split argbuf into its separate piped processes,
2700 and record info about each one.
2701 Also search for the programs that are to be run. */
2703 argbuf
.safe_push (0);
2705 commands
[0].prog
= argbuf
[0]; /* first command. */
2706 commands
[0].argv
= argbuf
.address ();
2708 if (!wrapper_string
)
2710 string
= find_a_file (&exec_prefixes
, commands
[0].prog
, X_OK
, false);
2711 commands
[0].argv
[0] = (string
) ? string
: commands
[0].argv
[0];
2714 for (n_commands
= 1, i
= 0; argbuf
.iterate (i
, &arg
); i
++)
2715 if (arg
&& strcmp (arg
, "|") == 0)
2716 { /* each command. */
2717 #if defined (__MSDOS__) || defined (OS2) || defined (VMS)
2718 fatal_error ("-pipe not supported");
2720 argbuf
[i
] = 0; /* Termination of
2722 commands
[n_commands
].prog
= argbuf
[i
+ 1];
2723 commands
[n_commands
].argv
2724 = &(argbuf
.address ())[i
+ 1];
2725 string
= find_a_file (&exec_prefixes
, commands
[n_commands
].prog
,
2728 commands
[n_commands
].argv
[0] = string
;
2732 /* If -v, print what we are about to do, and maybe query. */
2736 /* For help listings, put a blank line between sub-processes. */
2737 if (print_help_list
)
2738 fputc ('\n', stderr
);
2740 /* Print each piped command as a separate line. */
2741 for (i
= 0; i
< n_commands
; i
++)
2743 const char *const *j
;
2745 if (verbose_only_flag
)
2747 for (j
= commands
[i
].argv
; *j
; j
++)
2750 for (p
= *j
; *p
; ++p
)
2751 if (!ISALNUM ((unsigned char) *p
)
2752 && *p
!= '_' && *p
!= '/' && *p
!= '-' && *p
!= '.')
2756 fprintf (stderr
, " \"");
2757 for (p
= *j
; *p
; ++p
)
2759 if (*p
== '"' || *p
== '\\' || *p
== '$')
2760 fputc ('\\', stderr
);
2763 fputc ('"', stderr
);
2765 /* If it's empty, print "". */
2767 fprintf (stderr
, " \"\"");
2769 fprintf (stderr
, " %s", *j
);
2773 for (j
= commands
[i
].argv
; *j
; j
++)
2774 /* If it's empty, print "". */
2776 fprintf (stderr
, " \"\"");
2778 fprintf (stderr
, " %s", *j
);
2780 /* Print a pipe symbol after all but the last command. */
2781 if (i
+ 1 != n_commands
)
2782 fprintf (stderr
, " |");
2783 fprintf (stderr
, "\n");
2786 if (verbose_only_flag
!= 0)
2788 /* verbose_only_flag should act as if the spec was
2789 executed, so increment execution_count before
2790 returning. This prevents spurious warnings about
2791 unused linker input files, etc. */
2796 fnotice (stderr
, "\nGo ahead? (y or n) ");
2800 while (getchar () != '\n')
2803 if (i
!= 'y' && i
!= 'Y')
2808 #ifdef ENABLE_VALGRIND_CHECKING
2809 /* Run the each command through valgrind. To simplify prepending the
2810 path to valgrind and the option "-q" (for quiet operation unless
2811 something triggers), we allocate a separate argv array. */
2813 for (i
= 0; i
< n_commands
; i
++)
2819 for (argc
= 0; commands
[i
].argv
[argc
] != NULL
; argc
++)
2822 argv
= XALLOCAVEC (const char *, argc
+ 3);
2824 argv
[0] = VALGRIND_PATH
;
2826 for (j
= 2; j
< argc
+ 2; j
++)
2827 argv
[j
] = commands
[i
].argv
[j
- 2];
2830 commands
[i
].argv
= argv
;
2831 commands
[i
].prog
= argv
[0];
2835 /* Run each piped subprocess. */
2837 pex
= pex_init (PEX_USE_PIPES
| ((report_times
|| report_times_to_file
)
2838 ? PEX_RECORD_TIMES
: 0),
2839 progname
, temp_filename
);
2841 fatal_error ("pex_init failed: %m");
2843 for (i
= 0; i
< n_commands
; i
++)
2847 const char *string
= commands
[i
].argv
[0];
2849 errmsg
= pex_run (pex
,
2850 ((i
+ 1 == n_commands
? PEX_LAST
: 0)
2851 | (string
== commands
[i
].prog
? PEX_SEARCH
: 0)),
2852 string
, CONST_CAST (char **, commands
[i
].argv
),
2857 fatal_error (errmsg
);
2861 pfatal_with_name (errmsg
);
2865 if (i
&& string
!= commands
[i
].prog
)
2866 free (CONST_CAST (char *, string
));
2871 /* Wait for all the subprocesses to finish. */
2875 struct pex_time
*times
= NULL
;
2878 statuses
= (int *) alloca (n_commands
* sizeof (int));
2879 if (!pex_get_status (pex
, n_commands
, statuses
))
2880 fatal_error ("failed to get exit status: %m");
2882 if (report_times
|| report_times_to_file
)
2884 times
= (struct pex_time
*) alloca (n_commands
* sizeof (struct pex_time
));
2885 if (!pex_get_times (pex
, n_commands
, times
))
2886 fatal_error ("failed to get process times: %m");
2891 for (i
= 0; i
< n_commands
; ++i
)
2893 int status
= statuses
[i
];
2895 if (WIFSIGNALED (status
))
2898 /* SIGPIPE is a special case. It happens in -pipe mode
2899 when the compiler dies before the preprocessor is done,
2900 or the assembler dies before the compiler is done.
2901 There's generally been an error already, and this is
2902 just fallout. So don't generate another error unless
2903 we would otherwise have succeeded. */
2904 if (WTERMSIG (status
) == SIGPIPE
2905 && (signal_count
|| greatest_status
>= MIN_FATAL_STATUS
))
2912 internal_error ("%s (program %s)",
2913 strsignal (WTERMSIG (status
)), commands
[i
].prog
);
2915 else if (WIFEXITED (status
)
2916 && WEXITSTATUS (status
) >= MIN_FATAL_STATUS
)
2918 /* For ICEs in cc1, cc1obj, cc1plus see if it is
2919 reproducible or not. */
2922 && WEXITSTATUS (status
) == ICE_EXIT_CODE
2924 && (p
= strrchr (commands
[0].argv
[0], DIR_SEPARATOR
))
2925 && ! strncmp (p
+ 1, "cc1", 3))
2926 try_generate_repro (commands
[0].argv
);
2927 if (WEXITSTATUS (status
) > greatest_status
)
2928 greatest_status
= WEXITSTATUS (status
);
2932 if (report_times
|| report_times_to_file
)
2934 struct pex_time
*pt
= ×
[i
];
2937 ut
= ((double) pt
->user_seconds
2938 + (double) pt
->user_microseconds
/ 1.0e6
);
2939 st
= ((double) pt
->system_seconds
2940 + (double) pt
->system_microseconds
/ 1.0e6
);
2945 fnotice (stderr
, "# %s %.2f %.2f\n",
2946 commands
[i
].prog
, ut
, st
);
2948 if (report_times_to_file
)
2951 const char *const *j
;
2953 fprintf (report_times_to_file
, "%g %g", ut
, st
);
2955 for (j
= &commands
[i
].prog
; *j
; j
= &commands
[i
].argv
[++c
])
2958 for (p
= *j
; *p
; ++p
)
2959 if (*p
== '"' || *p
== '\\' || *p
== '$'
2965 fprintf (report_times_to_file
, " \"");
2966 for (p
= *j
; *p
; ++p
)
2968 if (*p
== '"' || *p
== '\\' || *p
== '$')
2969 fputc ('\\', report_times_to_file
);
2970 fputc (*p
, report_times_to_file
);
2972 fputc ('"', report_times_to_file
);
2975 fprintf (report_times_to_file
, " %s", *j
);
2978 fputc ('\n', report_times_to_file
);
2984 if (commands
[0].argv
[0] != commands
[0].prog
)
2985 free (CONST_CAST (char *, commands
[0].argv
[0]));
2991 /* Find all the switches given to us
2992 and make a vector describing them.
2993 The elements of the vector are strings, one per switch given.
2994 If a switch uses following arguments, then the `part1' field
2995 is the switch itself and the `args' field
2996 is a null-terminated vector containing the following arguments.
2997 Bits in the `live_cond' field are:
2998 SWITCH_LIVE to indicate this switch is true in a conditional spec.
2999 SWITCH_FALSE to indicate this switch is overridden by a later switch.
3000 SWITCH_IGNORE to indicate this switch should be ignored (used in %<S).
3001 SWITCH_IGNORE_PERMANENTLY to indicate this switch should be ignored
3002 in all do_spec calls afterwards. Used for %<S from self specs.
3003 The `validated' field is nonzero if any spec has looked at this switch;
3004 if it remains zero at the end of the run, it must be meaningless. */
3006 #define SWITCH_LIVE (1 << 0)
3007 #define SWITCH_FALSE (1 << 1)
3008 #define SWITCH_IGNORE (1 << 2)
3009 #define SWITCH_IGNORE_PERMANENTLY (1 << 3)
3010 #define SWITCH_KEEP_FOR_GCC (1 << 4)
3016 unsigned int live_cond
;
3022 static struct switchstr
*switches
;
3024 static int n_switches
;
3026 static int n_switches_alloc
;
3028 /* Set to zero if -fcompare-debug is disabled, positive if it's
3029 enabled and we're running the first compilation, negative if it's
3030 enabled and we're running the second compilation. For most of the
3031 time, it's in the range -1..1, but it can be temporarily set to 2
3032 or 3 to indicate that the -fcompare-debug flags didn't come from
3033 the command-line, but rather from the GCC_COMPARE_DEBUG environment
3034 variable, until a synthesized -fcompare-debug flag is added to the
3038 /* Set to nonzero if we've seen the -fcompare-debug-second flag. */
3039 int compare_debug_second
;
3041 /* Set to the flags that should be passed to the second compilation in
3042 a -fcompare-debug compilation. */
3043 const char *compare_debug_opt
;
3045 static struct switchstr
*switches_debug_check
[2];
3047 static int n_switches_debug_check
[2];
3049 static int n_switches_alloc_debug_check
[2];
3051 static char *debug_check_temp_file
[2];
3053 /* Language is one of three things:
3055 1) The name of a real programming language.
3056 2) NULL, indicating that no one has figured out
3058 3) '*', indicating that the file should be passed
3063 const char *language
;
3064 struct compiler
*incompiler
;
3069 /* Also a vector of input files specified. */
3071 static struct infile
*infiles
;
3075 static int n_infiles_alloc
;
3077 /* True if multiple input files are being compiled to a single
3080 static bool combine_inputs
;
3082 /* This counts the number of libraries added by lang_specific_driver, so that
3083 we can tell if there were any user supplied any files or libraries. */
3085 static int added_libraries
;
3087 /* And a vector of corresponding output files is made up later. */
3089 const char **outfiles
;
3091 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3093 /* Convert NAME to a new name if it is the standard suffix. DO_EXE
3094 is true if we should look for an executable suffix. DO_OBJ
3095 is true if we should look for an object suffix. */
3098 convert_filename (const char *name
, int do_exe ATTRIBUTE_UNUSED
,
3099 int do_obj ATTRIBUTE_UNUSED
)
3101 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3109 len
= strlen (name
);
3111 #ifdef HAVE_TARGET_OBJECT_SUFFIX
3112 /* Convert x.o to x.obj if TARGET_OBJECT_SUFFIX is ".obj". */
3113 if (do_obj
&& len
> 2
3114 && name
[len
- 2] == '.'
3115 && name
[len
- 1] == 'o')
3117 obstack_grow (&obstack
, name
, len
- 2);
3118 obstack_grow0 (&obstack
, TARGET_OBJECT_SUFFIX
, strlen (TARGET_OBJECT_SUFFIX
));
3119 name
= XOBFINISH (&obstack
, const char *);
3123 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3124 /* If there is no filetype, make it the executable suffix (which includes
3125 the "."). But don't get confused if we have just "-o". */
3126 if (! do_exe
|| TARGET_EXECUTABLE_SUFFIX
[0] == 0 || (len
== 2 && name
[0] == '-'))
3129 for (i
= len
- 1; i
>= 0; i
--)
3130 if (IS_DIR_SEPARATOR (name
[i
]))
3133 for (i
++; i
< len
; i
++)
3137 obstack_grow (&obstack
, name
, len
);
3138 obstack_grow0 (&obstack
, TARGET_EXECUTABLE_SUFFIX
,
3139 strlen (TARGET_EXECUTABLE_SUFFIX
));
3140 name
= XOBFINISH (&obstack
, const char *);
3147 /* Display the command line switches accepted by gcc. */
3151 printf (_("Usage: %s [options] file...\n"), progname
);
3152 fputs (_("Options:\n"), stdout
);
3154 fputs (_(" -pass-exit-codes Exit with highest error code from a phase\n"), stdout
);
3155 fputs (_(" --help Display this information\n"), stdout
);
3156 fputs (_(" --target-help Display target specific command line options\n"), stdout
);
3157 fputs (_(" --help={common|optimizers|params|target|warnings|[^]{joined|separate|undocumented}}[,...]\n"), stdout
);
3158 fputs (_(" Display specific types of command line options\n"), stdout
);
3160 fputs (_(" (Use '-v --help' to display command line options of sub-processes)\n"), stdout
);
3161 fputs (_(" --version Display compiler version information\n"), stdout
);
3162 fputs (_(" -dumpspecs Display all of the built in spec strings\n"), stdout
);
3163 fputs (_(" -dumpversion Display the version of the compiler\n"), stdout
);
3164 fputs (_(" -dumpmachine Display the compiler's target processor\n"), stdout
);
3165 fputs (_(" -print-search-dirs Display the directories in the compiler's search path\n"), stdout
);
3166 fputs (_(" -print-libgcc-file-name Display the name of the compiler's companion library\n"), stdout
);
3167 fputs (_(" -print-file-name=<lib> Display the full path to library <lib>\n"), stdout
);
3168 fputs (_(" -print-prog-name=<prog> Display the full path to compiler component <prog>\n"), stdout
);
3170 -print-multiarch Display the target's normalized GNU triplet, used as\n\
3171 a component in the library path\n"), stdout
);
3172 fputs (_(" -print-multi-directory Display the root directory for versions of libgcc\n"), stdout
);
3174 -print-multi-lib Display the mapping between command line options and\n\
3175 multiple library search directories\n"), stdout
);
3176 fputs (_(" -print-multi-os-directory Display the relative path to OS libraries\n"), stdout
);
3177 fputs (_(" -print-sysroot Display the target libraries directory\n"), stdout
);
3178 fputs (_(" -print-sysroot-headers-suffix Display the sysroot suffix used to find headers\n"), stdout
);
3179 fputs (_(" -Wa,<options> Pass comma-separated <options> on to the assembler\n"), stdout
);
3180 fputs (_(" -Wp,<options> Pass comma-separated <options> on to the preprocessor\n"), stdout
);
3181 fputs (_(" -Wl,<options> Pass comma-separated <options> on to the linker\n"), stdout
);
3182 fputs (_(" -Xassembler <arg> Pass <arg> on to the assembler\n"), stdout
);
3183 fputs (_(" -Xpreprocessor <arg> Pass <arg> on to the preprocessor\n"), stdout
);
3184 fputs (_(" -Xlinker <arg> Pass <arg> on to the linker\n"), stdout
);
3185 fputs (_(" -save-temps Do not delete intermediate files\n"), stdout
);
3186 fputs (_(" -save-temps=<arg> Do not delete intermediate files\n"), stdout
);
3188 -no-canonical-prefixes Do not canonicalize paths when building relative\n\
3189 prefixes to other gcc components\n"), stdout
);
3190 fputs (_(" -pipe Use pipes rather than intermediate files\n"), stdout
);
3191 fputs (_(" -time Time the execution of each subprocess\n"), stdout
);
3192 fputs (_(" -specs=<file> Override built-in specs with the contents of <file>\n"), stdout
);
3193 fputs (_(" -std=<standard> Assume that the input sources are for <standard>\n"), stdout
);
3195 --sysroot=<directory> Use <directory> as the root directory for headers\n\
3196 and libraries\n"), stdout
);
3197 fputs (_(" -B <directory> Add <directory> to the compiler's search paths\n"), stdout
);
3198 fputs (_(" -v Display the programs invoked by the compiler\n"), stdout
);
3199 fputs (_(" -### Like -v but options quoted and commands not executed\n"), stdout
);
3200 fputs (_(" -E Preprocess only; do not compile, assemble or link\n"), stdout
);
3201 fputs (_(" -S Compile only; do not assemble or link\n"), stdout
);
3202 fputs (_(" -c Compile and assemble, but do not link\n"), stdout
);
3203 fputs (_(" -o <file> Place the output into <file>\n"), stdout
);
3204 fputs (_(" -pie Create a position independent executable\n"), stdout
);
3205 fputs (_(" -shared Create a shared library\n"), stdout
);
3207 -x <language> Specify the language of the following input files\n\
3208 Permissible languages include: c c++ assembler none\n\
3209 'none' means revert to the default behavior of\n\
3210 guessing the language based on the file's extension\n\
3214 \nOptions starting with -g, -f, -m, -O, -W, or --param are automatically\n\
3215 passed on to the various sub-processes invoked by %s. In order to pass\n\
3216 other options on to these processes the -W<letter> options must be used.\n\
3219 /* The rest of the options are displayed by invocations of the various
3224 add_preprocessor_option (const char *option
, int len
)
3226 preprocessor_options
.safe_push (save_string (option
, len
));
3230 add_assembler_option (const char *option
, int len
)
3232 assembler_options
.safe_push (save_string (option
, len
));
3236 add_linker_option (const char *option
, int len
)
3238 linker_options
.safe_push (save_string (option
, len
));
3241 /* Allocate space for an input file in infiles. */
3246 if (n_infiles_alloc
== 0)
3248 n_infiles_alloc
= 16;
3249 infiles
= XNEWVEC (struct infile
, n_infiles_alloc
);
3251 else if (n_infiles_alloc
== n_infiles
)
3253 n_infiles_alloc
*= 2;
3254 infiles
= XRESIZEVEC (struct infile
, infiles
, n_infiles_alloc
);
3258 /* Store an input file with the given NAME and LANGUAGE in
3262 add_infile (const char *name
, const char *language
)
3265 infiles
[n_infiles
].name
= name
;
3266 infiles
[n_infiles
++].language
= language
;
3269 /* Allocate space for a switch in switches. */
3274 if (n_switches_alloc
== 0)
3276 n_switches_alloc
= 16;
3277 switches
= XNEWVEC (struct switchstr
, n_switches_alloc
);
3279 else if (n_switches_alloc
== n_switches
)
3281 n_switches_alloc
*= 2;
3282 switches
= XRESIZEVEC (struct switchstr
, switches
, n_switches_alloc
);
3286 /* Save an option OPT with N_ARGS arguments in array ARGS, marking it
3287 as validated if VALIDATED and KNOWN if it is an internal switch. */
3290 save_switch (const char *opt
, size_t n_args
, const char *const *args
,
3291 bool validated
, bool known
)
3294 switches
[n_switches
].part1
= opt
+ 1;
3296 switches
[n_switches
].args
= 0;
3299 switches
[n_switches
].args
= XNEWVEC (const char *, n_args
+ 1);
3300 memcpy (switches
[n_switches
].args
, args
, n_args
* sizeof (const char *));
3301 switches
[n_switches
].args
[n_args
] = NULL
;
3304 switches
[n_switches
].live_cond
= 0;
3305 switches
[n_switches
].validated
= validated
;
3306 switches
[n_switches
].known
= known
;
3307 switches
[n_switches
].ordering
= 0;
3311 /* Handle an option DECODED that is unknown to the option-processing
3315 driver_unknown_option_callback (const struct cl_decoded_option
*decoded
)
3317 const char *opt
= decoded
->arg
;
3318 if (opt
[1] == 'W' && opt
[2] == 'n' && opt
[3] == 'o' && opt
[4] == '-'
3319 && !(decoded
->errors
& CL_ERR_NEGATIVE
))
3321 /* Leave unknown -Wno-* options for the compiler proper, to be
3322 diagnosed only if there are warnings. */
3323 save_switch (decoded
->canonical_option
[0],
3324 decoded
->canonical_option_num_elements
- 1,
3325 &decoded
->canonical_option
[1], false, true);
3328 if (decoded
->opt_index
== OPT_SPECIAL_unknown
)
3330 /* Give it a chance to define it a a spec file. */
3331 save_switch (decoded
->canonical_option
[0],
3332 decoded
->canonical_option_num_elements
- 1,
3333 &decoded
->canonical_option
[1], false, false);
3340 /* Handle an option DECODED that is not marked as CL_DRIVER.
3341 LANG_MASK will always be CL_DRIVER. */
3344 driver_wrong_lang_callback (const struct cl_decoded_option
*decoded
,
3345 unsigned int lang_mask ATTRIBUTE_UNUSED
)
3347 /* At this point, non-driver options are accepted (and expected to
3348 be passed down by specs) unless marked to be rejected by the
3349 driver. Options to be rejected by the driver but accepted by the
3350 compilers proper are treated just like completely unknown
3352 const struct cl_option
*option
= &cl_options
[decoded
->opt_index
];
3354 if (option
->cl_reject_driver
)
3355 error ("unrecognized command line option %qs",
3356 decoded
->orig_option_with_args_text
);
3358 save_switch (decoded
->canonical_option
[0],
3359 decoded
->canonical_option_num_elements
- 1,
3360 &decoded
->canonical_option
[1], false, true);
3363 static const char *spec_lang
= 0;
3364 static int last_language_n_infiles
;
3366 /* Handle a driver option; arguments and return value as for
3370 driver_handle_option (struct gcc_options
*opts
,
3371 struct gcc_options
*opts_set
,
3372 const struct cl_decoded_option
*decoded
,
3373 unsigned int lang_mask ATTRIBUTE_UNUSED
, int kind
,
3375 const struct cl_option_handlers
*handlers ATTRIBUTE_UNUSED
,
3376 diagnostic_context
*dc
)
3378 size_t opt_index
= decoded
->opt_index
;
3379 const char *arg
= decoded
->arg
;
3380 const char *compare_debug_replacement_opt
;
3381 int value
= decoded
->value
;
3382 bool validated
= false;
3383 bool do_save
= true;
3385 gcc_assert (opts
== &global_options
);
3386 gcc_assert (opts_set
== &global_options_set
);
3387 gcc_assert (kind
== DK_UNSPECIFIED
);
3388 gcc_assert (loc
== UNKNOWN_LOCATION
);
3389 gcc_assert (dc
== global_dc
);
3395 struct spec_list
*sl
;
3397 for (sl
= specs
; sl
; sl
= sl
->next
)
3398 printf ("*%s:\n%s\n\n", sl
->name
, *(sl
->ptr_spec
));
3399 if (link_command_spec
)
3400 printf ("*link_command:\n%s\n\n", link_command_spec
);
3404 case OPT_dumpversion
:
3405 printf ("%s\n", spec_version
);
3408 case OPT_dumpmachine
:
3409 printf ("%s\n", spec_machine
);
3415 /* CPP driver cannot obtain switch from cc1_options. */
3417 add_preprocessor_option ("--version", strlen ("--version"));
3418 add_assembler_option ("--version", strlen ("--version"));
3419 add_linker_option ("--version", strlen ("--version"));
3423 print_help_list
= 1;
3425 /* CPP driver cannot obtain switch from cc1_options. */
3427 add_preprocessor_option ("--help", 6);
3428 add_assembler_option ("--help", 6);
3429 add_linker_option ("--help", 6);
3433 print_subprocess_help
= 2;
3436 case OPT__target_help
:
3437 print_subprocess_help
= 1;
3439 /* CPP driver cannot obtain switch from cc1_options. */
3441 add_preprocessor_option ("--target-help", 13);
3442 add_assembler_option ("--target-help", 13);
3443 add_linker_option ("--target-help", 13);
3446 case OPT__no_sysroot_suffix
:
3447 case OPT_pass_exit_codes
:
3448 case OPT_print_search_dirs
:
3449 case OPT_print_file_name_
:
3450 case OPT_print_prog_name_
:
3451 case OPT_print_multi_lib
:
3452 case OPT_print_multi_directory
:
3453 case OPT_print_sysroot
:
3454 case OPT_print_multi_os_directory
:
3455 case OPT_print_multiarch
:
3456 case OPT_print_sysroot_headers_suffix
:
3459 /* These options set the variables specified in common.opt
3460 automatically, and do not need to be saved for spec
3465 case OPT_print_libgcc_file_name
:
3466 print_file_name
= "libgcc.a";
3470 case OPT_fuse_ld_bfd
:
3474 case OPT_fuse_ld_gold
:
3478 case OPT_fcompare_debug_second
:
3479 compare_debug_second
= 1;
3482 case OPT_fcompare_debug
:
3486 compare_debug_replacement_opt
= "-fcompare-debug=";
3488 goto compare_debug_with_arg
;
3491 compare_debug_replacement_opt
= "-fcompare-debug=-gtoggle";
3493 goto compare_debug_with_arg
;
3500 case OPT_fcompare_debug_
:
3501 compare_debug_replacement_opt
= decoded
->canonical_option
[0];
3502 compare_debug_with_arg
:
3503 gcc_assert (decoded
->canonical_option_num_elements
== 1);
3504 gcc_assert (arg
!= NULL
);
3509 if (compare_debug
< 0)
3510 compare_debug_opt
= NULL
;
3512 compare_debug_opt
= arg
;
3513 save_switch (compare_debug_replacement_opt
, 0, NULL
, validated
, true);
3519 /* Pass the rest of this option to the assembler. */
3521 /* Split the argument at commas. */
3523 for (j
= 0; arg
[j
]; j
++)
3526 add_assembler_option (arg
+ prev
, j
- prev
);
3530 /* Record the part after the last comma. */
3531 add_assembler_option (arg
+ prev
, j
- prev
);
3539 /* Pass the rest of this option to the preprocessor. */
3541 /* Split the argument at commas. */
3543 for (j
= 0; arg
[j
]; j
++)
3546 add_preprocessor_option (arg
+ prev
, j
- prev
);
3550 /* Record the part after the last comma. */
3551 add_preprocessor_option (arg
+ prev
, j
- prev
);
3559 /* Split the argument at commas. */
3561 for (j
= 0; arg
[j
]; j
++)
3564 add_infile (save_string (arg
+ prev
, j
- prev
), "*");
3567 /* Record the part after the last comma. */
3568 add_infile (arg
+ prev
, "*");
3574 add_infile (arg
, "*");
3578 case OPT_Xpreprocessor
:
3579 add_preprocessor_option (arg
, strlen (arg
));
3583 case OPT_Xassembler
:
3584 add_assembler_option (arg
, strlen (arg
));
3589 /* POSIX allows separation of -l and the lib arg; canonicalize
3590 by concatenating -l with its arg */
3591 add_infile (concat ("-l", arg
, NULL
), "*");
3596 /* Similarly, canonicalize -L for linkers that may not accept
3597 separate arguments. */
3598 save_switch (concat ("-L", arg
, NULL
), 0, NULL
, validated
, true);
3603 save_switch (concat ("-F", arg
, NULL
), 0, NULL
, validated
, true);
3606 case OPT_save_temps
:
3607 save_temps_flag
= SAVE_TEMPS_CWD
;
3611 case OPT_save_temps_
:
3612 if (strcmp (arg
, "cwd") == 0)
3613 save_temps_flag
= SAVE_TEMPS_CWD
;
3614 else if (strcmp (arg
, "obj") == 0
3615 || strcmp (arg
, "object") == 0)
3616 save_temps_flag
= SAVE_TEMPS_OBJ
;
3618 fatal_error ("%qs is an unknown -save-temps option",
3619 decoded
->orig_option_with_args_text
);
3622 case OPT_no_canonical_prefixes
:
3623 /* Already handled as a special case, so ignored here. */
3629 /* These options set the variables specified in common.opt
3630 automatically, but do need to be saved for spec
3636 struct user_specs
*user
= XNEW (struct user_specs
);
3638 user
->next
= (struct user_specs
*) 0;
3639 user
->filename
= arg
;
3640 if (user_specs_tail
)
3641 user_specs_tail
->next
= user
;
3643 user_specs_head
= user
;
3644 user_specs_tail
= user
;
3650 target_system_root
= arg
;
3651 target_system_root_changed
= 1;
3656 if (report_times_to_file
)
3657 fclose (report_times_to_file
);
3658 report_times_to_file
= fopen (arg
, "a");
3664 This is similar to -v except that there is no execution
3665 of the commands and the echoed arguments are quoted. It
3666 is intended for use in shell scripts to capture the
3667 driver-generated command line. */
3668 verbose_only_flag
++;
3675 size_t len
= strlen (arg
);
3677 /* Catch the case where the user has forgotten to append a
3678 directory separator to the path. Note, they may be using
3679 -B to add an executable name prefix, eg "i386-elf-", in
3680 order to distinguish between multiple installations of
3681 GCC in the same directory. Hence we must check to see
3682 if appending a directory separator actually makes a
3683 valid directory name. */
3684 if (!IS_DIR_SEPARATOR (arg
[len
- 1])
3685 && is_directory (arg
, false))
3687 char *tmp
= XNEWVEC (char, len
+ 2);
3689 tmp
[len
] = DIR_SEPARATOR
;
3694 add_prefix (&exec_prefixes
, arg
, NULL
,
3695 PREFIX_PRIORITY_B_OPT
, 0, 0);
3696 add_prefix (&startfile_prefixes
, arg
, NULL
,
3697 PREFIX_PRIORITY_B_OPT
, 0, 0);
3698 add_prefix (&include_prefixes
, arg
, NULL
,
3699 PREFIX_PRIORITY_B_OPT
, 0, 0);
3706 if (!strcmp (spec_lang
, "none"))
3707 /* Suppress the warning if -xnone comes after the last input
3708 file, because alternate command interfaces like g++ might
3709 find it useful to place -xnone after each input file. */
3712 last_language_n_infiles
= n_infiles
;
3718 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX) || defined(HAVE_TARGET_OBJECT_SUFFIX)
3719 arg
= convert_filename (arg
, ! have_c
, 0);
3721 /* Save the output name in case -save-temps=obj was used. */
3722 save_temps_prefix
= xstrdup (arg
);
3723 /* On some systems, ld cannot handle "-o" without a space. So
3724 split the option from its argument. */
3725 save_switch ("-o", 1, &arg
, validated
, true);
3728 case OPT_static_libgcc
:
3729 case OPT_shared_libgcc
:
3730 case OPT_static_libgfortran
:
3731 case OPT_static_libstdc__
:
3732 /* These are always valid, since gcc.c itself understands the
3733 first two, gfortranspec.c understands -static-libgfortran and
3734 g++spec.c understands -static-libstdc++ */
3743 /* Various driver options need no special processing at this
3744 point, having been handled in a prescan above or being
3745 handled by specs. */
3750 save_switch (decoded
->canonical_option
[0],
3751 decoded
->canonical_option_num_elements
- 1,
3752 &decoded
->canonical_option
[1], validated
, true);
3756 /* Put the driver's standard set of option handlers in *HANDLERS. */
3759 set_option_handlers (struct cl_option_handlers
*handlers
)
3761 handlers
->unknown_option_callback
= driver_unknown_option_callback
;
3762 handlers
->wrong_lang_callback
= driver_wrong_lang_callback
;
3763 handlers
->num_handlers
= 3;
3764 handlers
->handlers
[0].handler
= driver_handle_option
;
3765 handlers
->handlers
[0].mask
= CL_DRIVER
;
3766 handlers
->handlers
[1].handler
= common_handle_option
;
3767 handlers
->handlers
[1].mask
= CL_COMMON
;
3768 handlers
->handlers
[2].handler
= target_handle_option
;
3769 handlers
->handlers
[2].mask
= CL_TARGET
;
3772 /* Create the vector `switches' and its contents.
3773 Store its length in `n_switches'. */
3776 process_command (unsigned int decoded_options_count
,
3777 struct cl_decoded_option
*decoded_options
)
3781 char *tooldir_prefix
, *tooldir_prefix2
;
3782 char *(*get_relative_prefix
) (const char *, const char *,
3783 const char *) = NULL
;
3784 struct cl_option_handlers handlers
;
3787 gcc_exec_prefix
= getenv ("GCC_EXEC_PREFIX");
3791 added_libraries
= 0;
3793 /* Figure compiler version from version string. */
3795 compiler_version
= temp1
= xstrdup (version_string
);
3797 for (; *temp1
; ++temp1
)
3806 /* Handle any -no-canonical-prefixes flag early, to assign the function
3807 that builds relative prefixes. This function creates default search
3808 paths that are needed later in normal option handling. */
3810 for (j
= 1; j
< decoded_options_count
; j
++)
3812 if (decoded_options
[j
].opt_index
== OPT_no_canonical_prefixes
)
3814 get_relative_prefix
= make_relative_prefix_ignore_links
;
3818 if (! get_relative_prefix
)
3819 get_relative_prefix
= make_relative_prefix
;
3821 /* Set up the default search paths. If there is no GCC_EXEC_PREFIX,
3822 see if we can create it from the pathname specified in
3823 decoded_options[0].arg. */
3825 gcc_libexec_prefix
= standard_libexec_prefix
;
3827 /* FIXME: make_relative_prefix doesn't yet work for VMS. */
3828 if (!gcc_exec_prefix
)
3830 gcc_exec_prefix
= get_relative_prefix (decoded_options
[0].arg
,
3831 standard_bindir_prefix
,
3832 standard_exec_prefix
);
3833 gcc_libexec_prefix
= get_relative_prefix (decoded_options
[0].arg
,
3834 standard_bindir_prefix
,
3835 standard_libexec_prefix
);
3836 if (gcc_exec_prefix
)
3837 xputenv (concat ("GCC_EXEC_PREFIX=", gcc_exec_prefix
, NULL
));
3841 /* make_relative_prefix requires a program name, but
3842 GCC_EXEC_PREFIX is typically a directory name with a trailing
3843 / (which is ignored by make_relative_prefix), so append a
3845 char *tmp_prefix
= concat (gcc_exec_prefix
, "gcc", NULL
);
3846 gcc_libexec_prefix
= get_relative_prefix (tmp_prefix
,
3847 standard_exec_prefix
,
3848 standard_libexec_prefix
);
3850 /* The path is unrelocated, so fallback to the original setting. */
3851 if (!gcc_libexec_prefix
)
3852 gcc_libexec_prefix
= standard_libexec_prefix
;
3858 /* From this point onward, gcc_exec_prefix is non-null if the toolchain
3859 is relocated. The toolchain was either relocated using GCC_EXEC_PREFIX
3860 or an automatically created GCC_EXEC_PREFIX from
3861 decoded_options[0].arg. */
3863 /* Do language-specific adjustment/addition of flags. */
3864 lang_specific_driver (&decoded_options
, &decoded_options_count
,
3867 if (gcc_exec_prefix
)
3869 int len
= strlen (gcc_exec_prefix
);
3871 if (len
> (int) sizeof ("/lib/gcc/") - 1
3872 && (IS_DIR_SEPARATOR (gcc_exec_prefix
[len
-1])))
3874 temp
= gcc_exec_prefix
+ len
- sizeof ("/lib/gcc/") + 1;
3875 if (IS_DIR_SEPARATOR (*temp
)
3876 && filename_ncmp (temp
+ 1, "lib", 3) == 0
3877 && IS_DIR_SEPARATOR (temp
[4])
3878 && filename_ncmp (temp
+ 5, "gcc", 3) == 0)
3879 len
-= sizeof ("/lib/gcc/") - 1;
3882 set_std_prefix (gcc_exec_prefix
, len
);
3883 add_prefix (&exec_prefixes
, gcc_libexec_prefix
, "GCC",
3884 PREFIX_PRIORITY_LAST
, 0, 0);
3885 add_prefix (&startfile_prefixes
, gcc_exec_prefix
, "GCC",
3886 PREFIX_PRIORITY_LAST
, 0, 0);
3889 /* COMPILER_PATH and LIBRARY_PATH have values
3890 that are lists of directory names with colons. */
3892 temp
= getenv ("COMPILER_PATH");
3895 const char *startp
, *endp
;
3896 char *nstore
= (char *) alloca (strlen (temp
) + 3);
3898 startp
= endp
= temp
;
3901 if (*endp
== PATH_SEPARATOR
|| *endp
== 0)
3903 strncpy (nstore
, startp
, endp
- startp
);
3905 strcpy (nstore
, concat (".", dir_separator_str
, NULL
));
3906 else if (!IS_DIR_SEPARATOR (endp
[-1]))
3908 nstore
[endp
- startp
] = DIR_SEPARATOR
;
3909 nstore
[endp
- startp
+ 1] = 0;
3912 nstore
[endp
- startp
] = 0;
3913 add_prefix (&exec_prefixes
, nstore
, 0,
3914 PREFIX_PRIORITY_LAST
, 0, 0);
3915 add_prefix (&include_prefixes
, nstore
, 0,
3916 PREFIX_PRIORITY_LAST
, 0, 0);
3919 endp
= startp
= endp
+ 1;
3926 temp
= getenv (LIBRARY_PATH_ENV
);
3927 if (temp
&& *cross_compile
== '0')
3929 const char *startp
, *endp
;
3930 char *nstore
= (char *) alloca (strlen (temp
) + 3);
3932 startp
= endp
= temp
;
3935 if (*endp
== PATH_SEPARATOR
|| *endp
== 0)
3937 strncpy (nstore
, startp
, endp
- startp
);
3939 strcpy (nstore
, concat (".", dir_separator_str
, NULL
));
3940 else if (!IS_DIR_SEPARATOR (endp
[-1]))
3942 nstore
[endp
- startp
] = DIR_SEPARATOR
;
3943 nstore
[endp
- startp
+ 1] = 0;
3946 nstore
[endp
- startp
] = 0;
3947 add_prefix (&startfile_prefixes
, nstore
, NULL
,
3948 PREFIX_PRIORITY_LAST
, 0, 1);
3951 endp
= startp
= endp
+ 1;
3958 /* Use LPATH like LIBRARY_PATH (for the CMU build program). */
3959 temp
= getenv ("LPATH");
3960 if (temp
&& *cross_compile
== '0')
3962 const char *startp
, *endp
;
3963 char *nstore
= (char *) alloca (strlen (temp
) + 3);
3965 startp
= endp
= temp
;
3968 if (*endp
== PATH_SEPARATOR
|| *endp
== 0)
3970 strncpy (nstore
, startp
, endp
- startp
);
3972 strcpy (nstore
, concat (".", dir_separator_str
, NULL
));
3973 else if (!IS_DIR_SEPARATOR (endp
[-1]))
3975 nstore
[endp
- startp
] = DIR_SEPARATOR
;
3976 nstore
[endp
- startp
+ 1] = 0;
3979 nstore
[endp
- startp
] = 0;
3980 add_prefix (&startfile_prefixes
, nstore
, NULL
,
3981 PREFIX_PRIORITY_LAST
, 0, 1);
3984 endp
= startp
= endp
+ 1;
3991 /* Process the options and store input files and switches in their
3994 last_language_n_infiles
= -1;
3996 set_option_handlers (&handlers
);
3998 for (j
= 1; j
< decoded_options_count
; j
++)
4000 switch (decoded_options
[j
].opt_index
)
4012 for (j
= 1; j
< decoded_options_count
; j
++)
4014 if (decoded_options
[j
].opt_index
== OPT_SPECIAL_input_file
)
4016 const char *arg
= decoded_options
[j
].arg
;
4017 const char *p
= strrchr (arg
, '@');
4021 #ifdef HAVE_TARGET_OBJECT_SUFFIX
4022 arg
= convert_filename (arg
, 0, access (arg
, F_OK
));
4024 /* For LTO static archive support we handle input file
4025 specifications that are composed of a filename and
4026 an offset like FNAME@OFFSET. */
4029 && sscanf (p
, "@%li%n", &offset
, &consumed
) >= 1
4030 && strlen (p
) == (unsigned int)consumed
)
4032 fname
= (char *)xmalloc (p
- arg
+ 1);
4033 memcpy (fname
, arg
, p
- arg
);
4034 fname
[p
- arg
] = '\0';
4035 /* Only accept non-stdin and existing FNAME parts, otherwise
4036 try with the full name. */
4037 if (strcmp (fname
, "-") == 0 || access (fname
, F_OK
) < 0)
4040 fname
= xstrdup (arg
);
4044 fname
= xstrdup (arg
);
4046 if (strcmp (fname
, "-") != 0 && access (fname
, F_OK
) < 0)
4047 perror_with_name (fname
);
4049 add_infile (arg
, spec_lang
);
4055 read_cmdline_option (&global_options
, &global_options_set
,
4056 decoded_options
+ j
, UNKNOWN_LOCATION
,
4057 CL_DRIVER
, &handlers
, global_dc
);
4060 /* If -save-temps=obj and -o name, create the prefix to use for %b.
4061 Otherwise just make -save-temps=obj the same as -save-temps=cwd. */
4062 if (save_temps_flag
== SAVE_TEMPS_OBJ
&& save_temps_prefix
!= NULL
)
4064 save_temps_length
= strlen (save_temps_prefix
);
4065 temp
= strrchr (lbasename (save_temps_prefix
), '.');
4068 save_temps_length
-= strlen (temp
);
4069 save_temps_prefix
[save_temps_length
] = '\0';
4073 else if (save_temps_prefix
!= NULL
)
4075 free (save_temps_prefix
);
4076 save_temps_prefix
= NULL
;
4079 if (save_temps_flag
&& use_pipes
)
4081 /* -save-temps overrides -pipe, so that temp files are produced */
4082 if (save_temps_flag
)
4083 warning (0, "-pipe ignored because -save-temps specified");
4089 const char *gcd
= getenv ("GCC_COMPARE_DEBUG");
4091 if (gcd
&& gcd
[0] == '-')
4094 compare_debug_opt
= gcd
;
4096 else if (gcd
&& *gcd
&& strcmp (gcd
, "0"))
4099 compare_debug_opt
= "-gtoggle";
4102 else if (compare_debug
< 0)
4105 gcc_assert (!compare_debug_opt
);
4108 /* Set up the search paths. We add directories that we expect to
4109 contain GNU Toolchain components before directories specified by
4110 the machine description so that we will find GNU components (like
4111 the GNU assembler) before those of the host system. */
4113 /* If we don't know where the toolchain has been installed, use the
4114 configured-in locations. */
4115 if (!gcc_exec_prefix
)
4118 add_prefix (&exec_prefixes
, standard_libexec_prefix
, "GCC",
4119 PREFIX_PRIORITY_LAST
, 1, 0);
4120 add_prefix (&exec_prefixes
, standard_libexec_prefix
, "BINUTILS",
4121 PREFIX_PRIORITY_LAST
, 2, 0);
4122 add_prefix (&exec_prefixes
, standard_exec_prefix
, "BINUTILS",
4123 PREFIX_PRIORITY_LAST
, 2, 0);
4125 add_prefix (&startfile_prefixes
, standard_exec_prefix
, "BINUTILS",
4126 PREFIX_PRIORITY_LAST
, 1, 0);
4129 gcc_assert (!IS_ABSOLUTE_PATH (tooldir_base_prefix
));
4130 tooldir_prefix2
= concat (tooldir_base_prefix
, spec_host_machine
,
4131 dir_separator_str
, NULL
);
4133 /* Look for tools relative to the location from which the driver is
4134 running, or, if that is not available, the configured prefix. */
4136 = concat (gcc_exec_prefix
? gcc_exec_prefix
: standard_exec_prefix
,
4137 spec_host_machine
, dir_separator_str
, spec_version
,
4138 accel_dir_suffix
, dir_separator_str
, tooldir_prefix2
, NULL
);
4139 free (tooldir_prefix2
);
4141 add_prefix (&exec_prefixes
,
4142 concat (tooldir_prefix
, "bin", dir_separator_str
, NULL
),
4143 "BINUTILS", PREFIX_PRIORITY_LAST
, 0, 0);
4144 add_prefix (&startfile_prefixes
,
4145 concat (tooldir_prefix
, "lib", dir_separator_str
, NULL
),
4146 "BINUTILS", PREFIX_PRIORITY_LAST
, 0, 1);
4147 free (tooldir_prefix
);
4149 #if defined(TARGET_SYSTEM_ROOT_RELOCATABLE) && !defined(VMS)
4150 /* If the normal TARGET_SYSTEM_ROOT is inside of $exec_prefix,
4151 then consider it to relocate with the rest of the GCC installation
4152 if GCC_EXEC_PREFIX is set.
4153 ``make_relative_prefix'' is not compiled for VMS, so don't call it. */
4154 if (target_system_root
&& !target_system_root_changed
&& gcc_exec_prefix
)
4156 char *tmp_prefix
= get_relative_prefix (decoded_options
[0].arg
,
4157 standard_bindir_prefix
,
4158 target_system_root
);
4159 if (tmp_prefix
&& access_check (tmp_prefix
, F_OK
) == 0)
4161 target_system_root
= tmp_prefix
;
4162 target_system_root_changed
= 1;
4167 /* More prefixes are enabled in main, after we read the specs file
4168 and determine whether this is cross-compilation or not. */
4170 if (n_infiles
== last_language_n_infiles
&& spec_lang
!= 0)
4171 warning (0, "%<-x %s%> after last input file has no effect", spec_lang
);
4173 /* Synthesize -fcompare-debug flag from the GCC_COMPARE_DEBUG
4174 environment variable. */
4175 if (compare_debug
== 2 || compare_debug
== 3)
4177 const char *opt
= concat ("-fcompare-debug=", compare_debug_opt
, NULL
);
4178 save_switch (opt
, 0, NULL
, false, true);
4182 /* Ensure we only invoke each subprocess once. */
4183 if (print_subprocess_help
|| print_help_list
|| print_version
)
4187 /* Create a dummy input file, so that we can pass
4188 the help option on to the various sub-processes. */
4189 add_infile ("help-dummy", "c");
4193 switches
[n_switches
].part1
= 0;
4195 infiles
[n_infiles
].name
= 0;
4198 /* Store switches not filtered out by %<S in spec in COLLECT_GCC_OPTIONS
4199 and place that in the environment. */
4202 set_collect_gcc_options (void)
4207 /* Build COLLECT_GCC_OPTIONS to have all of the options specified to
4209 obstack_grow (&collect_obstack
, "COLLECT_GCC_OPTIONS=",
4210 sizeof ("COLLECT_GCC_OPTIONS=") - 1);
4213 for (i
= 0; (int) i
< n_switches
; i
++)
4215 const char *const *args
;
4218 obstack_grow (&collect_obstack
, " ", 1);
4222 /* Ignore elided switches. */
4223 if ((switches
[i
].live_cond
4224 & (SWITCH_IGNORE
| SWITCH_KEEP_FOR_GCC
))
4228 obstack_grow (&collect_obstack
, "'-", 2);
4229 q
= switches
[i
].part1
;
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);
4239 for (args
= switches
[i
].args
; args
&& *args
; args
++)
4241 obstack_grow (&collect_obstack
, " '", 2);
4243 while ((p
= strchr (q
, '\'')))
4245 obstack_grow (&collect_obstack
, q
, p
- q
);
4246 obstack_grow (&collect_obstack
, "'\\''", 4);
4249 obstack_grow (&collect_obstack
, q
, strlen (q
));
4250 obstack_grow (&collect_obstack
, "'", 1);
4253 obstack_grow (&collect_obstack
, "\0", 1);
4254 xputenv (XOBFINISH (&collect_obstack
, char *));
4257 /* Process a spec string, accumulating and running commands. */
4259 /* These variables describe the input file name.
4260 input_file_number is the index on outfiles of this file,
4261 so that the output file name can be stored for later use by %o.
4262 input_basename is the start of the part of the input file
4263 sans all directory names, and basename_length is the number
4264 of characters starting there excluding the suffix .c or whatever. */
4266 static const char *gcc_input_filename
;
4267 static int input_file_number
;
4268 size_t input_filename_length
;
4269 static int basename_length
;
4270 static int suffixed_basename_length
;
4271 static const char *input_basename
;
4272 static const char *input_suffix
;
4273 #ifndef HOST_LACKS_INODE_NUMBERS
4274 static struct stat input_stat
;
4276 static int input_stat_set
;
4278 /* The compiler used to process the current input file. */
4279 static struct compiler
*input_file_compiler
;
4281 /* These are variables used within do_spec and do_spec_1. */
4283 /* Nonzero if an arg has been started and not yet terminated
4284 (with space, tab or newline). */
4285 static int arg_going
;
4287 /* Nonzero means %d or %g has been seen; the next arg to be terminated
4288 is a temporary file name. */
4289 static int delete_this_arg
;
4291 /* Nonzero means %w has been seen; the next arg to be terminated
4292 is the output file name of this compilation. */
4293 static int this_is_output_file
;
4295 /* Nonzero means %s has been seen; the next arg to be terminated
4296 is the name of a library file and we should try the standard
4297 search dirs for it. */
4298 static int this_is_library_file
;
4300 /* Nonzero means %T has been seen; the next arg to be terminated
4301 is the name of a linker script and we should try all of the
4302 standard search dirs for it. If it is found insert a --script
4303 command line switch and then substitute the full path in place,
4304 otherwise generate an error message. */
4305 static int this_is_linker_script
;
4307 /* Nonzero means that the input of this command is coming from a pipe. */
4308 static int input_from_pipe
;
4310 /* Nonnull means substitute this for any suffix when outputting a switches
4312 static const char *suffix_subst
;
4314 /* If there is an argument being accumulated, terminate it and store it. */
4317 end_going_arg (void)
4323 obstack_1grow (&obstack
, 0);
4324 string
= XOBFINISH (&obstack
, const char *);
4325 if (this_is_library_file
)
4326 string
= find_file (string
);
4327 if (this_is_linker_script
)
4329 char * full_script_path
= find_a_file (&startfile_prefixes
, string
, R_OK
, true);
4331 if (full_script_path
== NULL
)
4333 error ("unable to locate default linker script %qs in the library search paths", string
);
4334 /* Script was not found on search path. */
4337 store_arg ("--script", false, false);
4338 string
= full_script_path
;
4340 store_arg (string
, delete_this_arg
, this_is_output_file
);
4341 if (this_is_output_file
)
4342 outfiles
[input_file_number
] = string
;
4348 /* Parse the WRAPPER string which is a comma separated list of the command line
4349 and insert them into the beginning of argbuf. */
4352 insert_wrapper (const char *wrapper
)
4356 char *buf
= xstrdup (wrapper
);
4358 unsigned int old_length
= argbuf
.length ();
4366 while ((p
= strchr (p
, ',')) != NULL
);
4368 argbuf
.safe_grow (old_length
+ n
);
4369 memmove (argbuf
.address () + n
,
4371 old_length
* sizeof (const_char_p
));
4385 while ((p
= strchr (p
, ',')) != NULL
);
4386 gcc_assert (i
== n
);
4389 /* Process the spec SPEC and run the commands specified therein.
4390 Returns 0 if the spec is successfully processed; -1 if failed. */
4393 do_spec (const char *spec
)
4397 value
= do_spec_2 (spec
);
4399 /* Force out any unfinished command.
4400 If -pipe, this forces out the last command if it ended in `|'. */
4403 if (argbuf
.length () > 0
4404 && !strcmp (argbuf
.last (), "|"))
4407 set_collect_gcc_options ();
4409 if (argbuf
.length () > 0)
4417 do_spec_2 (const char *spec
)
4423 delete_this_arg
= 0;
4424 this_is_output_file
= 0;
4425 this_is_library_file
= 0;
4426 this_is_linker_script
= 0;
4427 input_from_pipe
= 0;
4428 suffix_subst
= NULL
;
4430 result
= do_spec_1 (spec
, 0, NULL
);
4438 /* Process the given spec string and add any new options to the end
4439 of the switches/n_switches array. */
4442 do_option_spec (const char *name
, const char *spec
)
4444 unsigned int i
, value_count
, value_len
;
4445 const char *p
, *q
, *value
;
4446 char *tmp_spec
, *tmp_spec_p
;
4448 if (configure_default_options
[0].name
== NULL
)
4451 for (i
= 0; i
< ARRAY_SIZE (configure_default_options
); i
++)
4452 if (strcmp (configure_default_options
[i
].name
, name
) == 0)
4454 if (i
== ARRAY_SIZE (configure_default_options
))
4457 value
= configure_default_options
[i
].value
;
4458 value_len
= strlen (value
);
4460 /* Compute the size of the final spec. */
4463 while ((p
= strstr (p
, "%(VALUE)")) != NULL
)
4469 /* Replace each %(VALUE) by the specified value. */
4470 tmp_spec
= (char *) alloca (strlen (spec
) + 1
4471 + value_count
* (value_len
- strlen ("%(VALUE)")));
4472 tmp_spec_p
= tmp_spec
;
4474 while ((p
= strstr (q
, "%(VALUE)")) != NULL
)
4476 memcpy (tmp_spec_p
, q
, p
- q
);
4477 tmp_spec_p
= tmp_spec_p
+ (p
- q
);
4478 memcpy (tmp_spec_p
, value
, value_len
);
4479 tmp_spec_p
+= value_len
;
4480 q
= p
+ strlen ("%(VALUE)");
4482 strcpy (tmp_spec_p
, q
);
4484 do_self_spec (tmp_spec
);
4487 /* Process the given spec string and add any new options to the end
4488 of the switches/n_switches array. */
4491 do_self_spec (const char *spec
)
4496 do_spec_1 (" ", 0, NULL
);
4498 /* Mark %<S switches processed by do_self_spec to be ignored permanently.
4499 do_self_specs adds the replacements to switches array, so it shouldn't
4500 be processed afterwards. */
4501 for (i
= 0; i
< n_switches
; i
++)
4502 if ((switches
[i
].live_cond
& SWITCH_IGNORE
))
4503 switches
[i
].live_cond
|= SWITCH_IGNORE_PERMANENTLY
;
4505 if (argbuf
.length () > 0)
4507 const char **argbuf_copy
;
4508 struct cl_decoded_option
*decoded_options
;
4509 struct cl_option_handlers handlers
;
4510 unsigned int decoded_options_count
;
4513 /* Create a copy of argbuf with a dummy argv[0] entry for
4514 decode_cmdline_options_to_array. */
4515 argbuf_copy
= XNEWVEC (const char *,
4516 argbuf
.length () + 1);
4517 argbuf_copy
[0] = "";
4518 memcpy (argbuf_copy
+ 1, argbuf
.address (),
4519 argbuf
.length () * sizeof (const char *));
4521 decode_cmdline_options_to_array (argbuf
.length () + 1,
4523 CL_DRIVER
, &decoded_options
,
4524 &decoded_options_count
);
4527 set_option_handlers (&handlers
);
4529 for (j
= 1; j
< decoded_options_count
; j
++)
4531 switch (decoded_options
[j
].opt_index
)
4533 case OPT_SPECIAL_input_file
:
4534 /* Specs should only generate options, not input
4536 if (strcmp (decoded_options
[j
].arg
, "-") != 0)
4537 fatal_error ("switch %qs does not start with %<-%>",
4538 decoded_options
[j
].arg
);
4540 fatal_error ("spec-generated switch is just %<-%>");
4543 case OPT_fcompare_debug_second
:
4544 case OPT_fcompare_debug
:
4545 case OPT_fcompare_debug_
:
4547 /* Avoid duplicate processing of some options from
4548 compare-debug specs; just save them here. */
4549 save_switch (decoded_options
[j
].canonical_option
[0],
4550 (decoded_options
[j
].canonical_option_num_elements
4552 &decoded_options
[j
].canonical_option
[1], false, true);
4556 read_cmdline_option (&global_options
, &global_options_set
,
4557 decoded_options
+ j
, UNKNOWN_LOCATION
,
4558 CL_DRIVER
, &handlers
, global_dc
);
4564 switches
[n_switches
].part1
= 0;
4568 /* Callback for processing %D and %I specs. */
4570 struct spec_path_info
{
4575 bool separate_options
;
4579 spec_path (char *path
, void *data
)
4581 struct spec_path_info
*info
= (struct spec_path_info
*) data
;
4585 if (info
->omit_relative
&& !IS_ABSOLUTE_PATH (path
))
4588 if (info
->append_len
!= 0)
4590 len
= strlen (path
);
4591 memcpy (path
+ len
, info
->append
, info
->append_len
+ 1);
4594 if (!is_directory (path
, true))
4597 do_spec_1 (info
->option
, 1, NULL
);
4598 if (info
->separate_options
)
4599 do_spec_1 (" ", 0, NULL
);
4601 if (info
->append_len
== 0)
4603 len
= strlen (path
);
4604 save
= path
[len
- 1];
4605 if (IS_DIR_SEPARATOR (path
[len
- 1]))
4606 path
[len
- 1] = '\0';
4609 do_spec_1 (path
, 1, NULL
);
4610 do_spec_1 (" ", 0, NULL
);
4612 /* Must not damage the original path. */
4613 if (info
->append_len
== 0)
4614 path
[len
- 1] = save
;
4619 /* Create a temporary FILE with the contents of ARGV. Add @FILE to the
4623 create_at_file (char **argv
)
4625 char *temp_file
= make_temp_file ("");
4626 char *at_argument
= concat ("@", temp_file
, NULL
);
4627 FILE *f
= fopen (temp_file
, "w");
4631 fatal_error ("could not open temporary response file %s",
4634 status
= writeargv (argv
, f
);
4637 fatal_error ("could not write to temporary response file %s",
4640 status
= fclose (f
);
4643 fatal_error ("could not close temporary response file %s",
4646 store_arg (at_argument
, 0, 0);
4648 record_temp_file (temp_file
, !save_temps_flag
, !save_temps_flag
);
4651 /* True if we should compile INFILE. */
4654 compile_input_file_p (struct infile
*infile
)
4656 if ((!infile
->language
) || (infile
->language
[0] != '*'))
4657 if (infile
->incompiler
== input_file_compiler
)
4662 /* Process each member of VEC as a spec. */
4665 do_specs_vec (vec
<char_p
> vec
)
4670 FOR_EACH_VEC_ELT (vec
, ix
, opt
)
4672 do_spec_1 (opt
, 1, NULL
);
4673 /* Make each accumulated option a separate argument. */
4674 do_spec_1 (" ", 0, NULL
);
4678 /* Process the sub-spec SPEC as a portion of a larger spec.
4679 This is like processing a whole spec except that we do
4680 not initialize at the beginning and we do not supply a
4681 newline by default at the end.
4682 INSWITCH nonzero means don't process %-sequences in SPEC;
4683 in this case, % is treated as an ordinary character.
4684 This is used while substituting switches.
4685 INSWITCH nonzero also causes SPC not to terminate an argument.
4687 Value is zero unless a line was finished
4688 and the command on that line reported an error. */
4691 do_spec_1 (const char *spec
, int inswitch
, const char *soft_matched_part
)
4693 const char *p
= spec
;
4698 /* If it's an empty string argument to a switch, keep it as is. */
4699 if (inswitch
&& !*p
)
4703 /* If substituting a switch, treat all chars like letters.
4704 Otherwise, NL, SPC, TAB and % are special. */
4705 switch (inswitch
? 'a' : c
)
4710 if (argbuf
.length () > 0
4711 && !strcmp (argbuf
.last (), "|"))
4713 /* A `|' before the newline means use a pipe here,
4714 but only if -pipe was specified.
4715 Otherwise, execute now and don't pass the `|' as an arg. */
4718 input_from_pipe
= 1;
4725 set_collect_gcc_options ();
4727 if (argbuf
.length () > 0)
4733 /* Reinitialize for a new command, and for a new argument. */
4736 delete_this_arg
= 0;
4737 this_is_output_file
= 0;
4738 this_is_library_file
= 0;
4739 this_is_linker_script
= 0;
4740 input_from_pipe
= 0;
4747 obstack_1grow (&obstack
, c
);
4755 /* Reinitialize for a new argument. */
4756 delete_this_arg
= 0;
4757 this_is_output_file
= 0;
4758 this_is_library_file
= 0;
4759 this_is_linker_script
= 0;
4766 fatal_error ("spec %qs invalid", spec
);
4769 if (save_temps_length
)
4770 obstack_grow (&obstack
, save_temps_prefix
, save_temps_length
);
4772 obstack_grow (&obstack
, input_basename
, basename_length
);
4773 if (compare_debug
< 0)
4774 obstack_grow (&obstack
, ".gk", 3);
4779 if (save_temps_length
)
4780 obstack_grow (&obstack
, save_temps_prefix
, save_temps_length
);
4782 obstack_grow (&obstack
, input_basename
, suffixed_basename_length
);
4783 if (compare_debug
< 0)
4784 obstack_grow (&obstack
, ".gk", 3);
4789 delete_this_arg
= 2;
4792 /* Dump out the directories specified with LIBRARY_PATH,
4793 followed by the absolute directories
4794 that we search for startfiles. */
4797 struct spec_path_info info
;
4800 info
.append_len
= 0;
4801 #ifdef RELATIVE_PREFIX_NOT_LINKDIR
4802 /* Used on systems which record the specified -L dirs
4803 and use them to search for dynamic linking.
4804 Relative directories always come from -B,
4805 and it is better not to use them for searching
4806 at run time. In particular, stage1 loses. */
4807 info
.omit_relative
= true;
4809 info
.omit_relative
= false;
4811 info
.separate_options
= false;
4813 for_each_path (&startfile_prefixes
, true, 0, spec_path
, &info
);
4818 /* %efoo means report an error with `foo' as error message
4819 and don't execute any more commands for this file. */
4823 while (*p
!= 0 && *p
!= '\n')
4825 buf
= (char *) alloca (p
- q
+ 1);
4826 strncpy (buf
, q
, p
- q
);
4828 error ("%s", _(buf
));
4833 /* %nfoo means report a notice with `foo' on stderr. */
4837 while (*p
!= 0 && *p
!= '\n')
4839 buf
= (char *) alloca (p
- q
+ 1);
4840 strncpy (buf
, q
, p
- q
);
4842 inform (0, "%s", _(buf
));
4852 /* If save_temps_flag is off, and the HOST_BIT_BUCKET is
4853 defined, and it is not a directory, and it is
4854 writable, use it. Otherwise, treat this like any
4855 other temporary file. */
4857 if ((!save_temps_flag
)
4858 && (stat (HOST_BIT_BUCKET
, &st
) == 0) && (!S_ISDIR (st
.st_mode
))
4859 && (access (HOST_BIT_BUCKET
, W_OK
) == 0))
4861 obstack_grow (&obstack
, HOST_BIT_BUCKET
,
4862 strlen (HOST_BIT_BUCKET
));
4863 delete_this_arg
= 0;
4868 goto create_temp_file
;
4872 obstack_1grow (&obstack
, '-');
4873 delete_this_arg
= 0;
4876 /* consume suffix */
4877 while (*p
== '.' || ISALNUM ((unsigned char) *p
))
4879 if (p
[0] == '%' && p
[1] == 'O')
4884 goto create_temp_file
;
4888 /* consume suffix */
4889 while (*p
== '.' || ISALNUM ((unsigned char) *p
))
4891 if (p
[0] == '%' && p
[1] == 'O')
4896 goto create_temp_file
;
4902 struct temp_name
*t
;
4904 const char *suffix
= p
;
4905 char *saved_suffix
= NULL
;
4907 while (*p
== '.' || ISALNUM ((unsigned char) *p
))
4909 suffix_length
= p
- suffix
;
4910 if (p
[0] == '%' && p
[1] == 'O')
4913 /* We don't support extra suffix characters after %O. */
4914 if (*p
== '.' || ISALNUM ((unsigned char) *p
))
4915 fatal_error ("spec %qs has invalid %<%%0%c%>", spec
, *p
);
4916 if (suffix_length
== 0)
4917 suffix
= TARGET_OBJECT_SUFFIX
;
4921 = XNEWVEC (char, suffix_length
4922 + strlen (TARGET_OBJECT_SUFFIX
) + 1);
4923 strncpy (saved_suffix
, suffix
, suffix_length
);
4924 strcpy (saved_suffix
+ suffix_length
,
4925 TARGET_OBJECT_SUFFIX
);
4927 suffix_length
+= strlen (TARGET_OBJECT_SUFFIX
);
4930 if (compare_debug
< 0)
4932 suffix
= concat (".gk", suffix
, NULL
);
4936 /* If -save-temps=obj and -o were specified, use that for the
4938 if (save_temps_length
)
4941 temp_filename_length
4942 = save_temps_length
+ suffix_length
+ 1;
4943 tmp
= (char *) alloca (temp_filename_length
);
4944 memcpy (tmp
, save_temps_prefix
, save_temps_length
);
4945 memcpy (tmp
+ save_temps_length
, suffix
, suffix_length
);
4946 tmp
[save_temps_length
+ suffix_length
] = '\0';
4947 temp_filename
= save_string (tmp
, save_temps_length
4949 obstack_grow (&obstack
, temp_filename
,
4950 temp_filename_length
);
4952 delete_this_arg
= 0;
4956 /* If the gcc_input_filename has the same suffix specified
4957 for the %g, %u, or %U, and -save-temps is specified,
4958 we could end up using that file as an intermediate
4959 thus clobbering the user's source file (.e.g.,
4960 gcc -save-temps foo.s would clobber foo.s with the
4961 output of cpp0). So check for this condition and
4962 generate a temp file as the intermediate. */
4964 if (save_temps_flag
)
4967 temp_filename_length
= basename_length
+ suffix_length
+ 1;
4968 tmp
= (char *) alloca (temp_filename_length
);
4969 memcpy (tmp
, input_basename
, basename_length
);
4970 memcpy (tmp
+ basename_length
, suffix
, suffix_length
);
4971 tmp
[basename_length
+ suffix_length
] = '\0';
4972 temp_filename
= tmp
;
4974 if (filename_cmp (temp_filename
, gcc_input_filename
) != 0)
4976 #ifndef HOST_LACKS_INODE_NUMBERS
4977 struct stat st_temp
;
4979 /* Note, set_input() resets input_stat_set to 0. */
4980 if (input_stat_set
== 0)
4982 input_stat_set
= stat (gcc_input_filename
,
4984 if (input_stat_set
>= 0)
4988 /* If we have the stat for the gcc_input_filename
4989 and we can do the stat for the temp_filename
4990 then the they could still refer to the same
4991 file if st_dev/st_ino's are the same. */
4992 if (input_stat_set
!= 1
4993 || stat (temp_filename
, &st_temp
) < 0
4994 || input_stat
.st_dev
!= st_temp
.st_dev
4995 || input_stat
.st_ino
!= st_temp
.st_ino
)
4997 /* Just compare canonical pathnames. */
4998 char* input_realname
= lrealpath (gcc_input_filename
);
4999 char* temp_realname
= lrealpath (temp_filename
);
5000 bool files_differ
= filename_cmp (input_realname
, temp_realname
);
5001 free (input_realname
);
5002 free (temp_realname
);
5006 temp_filename
= save_string (temp_filename
,
5007 temp_filename_length
+ 1);
5008 obstack_grow (&obstack
, temp_filename
,
5009 temp_filename_length
);
5011 delete_this_arg
= 0;
5017 /* See if we already have an association of %g/%u/%U and
5019 for (t
= temp_names
; t
; t
= t
->next
)
5020 if (t
->length
== suffix_length
5021 && strncmp (t
->suffix
, suffix
, suffix_length
) == 0
5022 && t
->unique
== (c
== 'u' || c
== 'U' || c
== 'j'))
5025 /* Make a new association if needed. %u and %j
5027 if (t
== 0 || c
== 'u' || c
== 'j')
5031 t
= XNEW (struct temp_name
);
5032 t
->next
= temp_names
;
5035 t
->length
= suffix_length
;
5038 t
->suffix
= saved_suffix
;
5039 saved_suffix
= NULL
;
5042 t
->suffix
= save_string (suffix
, suffix_length
);
5043 t
->unique
= (c
== 'u' || c
== 'U' || c
== 'j');
5044 temp_filename
= make_temp_file (t
->suffix
);
5045 temp_filename_length
= strlen (temp_filename
);
5046 t
->filename
= temp_filename
;
5047 t
->filename_length
= temp_filename_length
;
5050 free (saved_suffix
);
5052 obstack_grow (&obstack
, t
->filename
, t
->filename_length
);
5053 delete_this_arg
= 1;
5061 if (at_file_supplied
)
5063 /* We are going to expand `%i' to `@FILE', where FILE
5064 is a newly-created temporary filename. The filenames
5065 that would usually be expanded in place of %o will be
5066 written to the temporary file. */
5071 for (i
= 0; i
< n_infiles
; i
++)
5072 if (compile_input_file_p (&infiles
[i
]))
5075 argv
= (char **) alloca (sizeof (char *) * (n_files
+ 1));
5077 /* Copy the strings over. */
5078 for (i
= 0, j
= 0; i
< n_infiles
; i
++)
5079 if (compile_input_file_p (&infiles
[i
]))
5081 argv
[j
] = CONST_CAST (char *, infiles
[i
].name
);
5082 infiles
[i
].compiled
= true;
5087 create_at_file (argv
);
5090 for (i
= 0; (int) i
< n_infiles
; i
++)
5091 if (compile_input_file_p (&infiles
[i
]))
5093 store_arg (infiles
[i
].name
, 0, 0);
5094 infiles
[i
].compiled
= true;
5099 obstack_grow (&obstack
, gcc_input_filename
,
5100 input_filename_length
);
5107 struct spec_path_info info
;
5111 do_spec_1 ("-imultilib", 1, NULL
);
5112 /* Make this a separate argument. */
5113 do_spec_1 (" ", 0, NULL
);
5114 do_spec_1 (multilib_dir
, 1, NULL
);
5115 do_spec_1 (" ", 0, NULL
);
5120 do_spec_1 ("-imultiarch", 1, NULL
);
5121 /* Make this a separate argument. */
5122 do_spec_1 (" ", 0, NULL
);
5123 do_spec_1 (multiarch_dir
, 1, NULL
);
5124 do_spec_1 (" ", 0, NULL
);
5127 if (gcc_exec_prefix
)
5129 do_spec_1 ("-iprefix", 1, NULL
);
5130 /* Make this a separate argument. */
5131 do_spec_1 (" ", 0, NULL
);
5132 do_spec_1 (gcc_exec_prefix
, 1, NULL
);
5133 do_spec_1 (" ", 0, NULL
);
5136 if (target_system_root_changed
||
5137 (target_system_root
&& target_sysroot_hdrs_suffix
))
5139 do_spec_1 ("-isysroot", 1, NULL
);
5140 /* Make this a separate argument. */
5141 do_spec_1 (" ", 0, NULL
);
5142 do_spec_1 (target_system_root
, 1, NULL
);
5143 if (target_sysroot_hdrs_suffix
)
5144 do_spec_1 (target_sysroot_hdrs_suffix
, 1, NULL
);
5145 do_spec_1 (" ", 0, NULL
);
5148 info
.option
= "-isystem";
5149 info
.append
= "include";
5150 info
.append_len
= strlen (info
.append
);
5151 info
.omit_relative
= false;
5152 info
.separate_options
= true;
5154 for_each_path (&include_prefixes
, false, info
.append_len
,
5157 info
.append
= "include-fixed";
5158 if (*sysroot_hdrs_suffix_spec
)
5159 info
.append
= concat (info
.append
, dir_separator_str
,
5160 multilib_dir
, NULL
);
5161 info
.append_len
= strlen (info
.append
);
5162 for_each_path (&include_prefixes
, false, info
.append_len
,
5169 int max
= n_infiles
;
5170 max
+= lang_specific_extra_outfiles
;
5172 if (HAVE_GNU_LD
&& at_file_supplied
)
5174 /* We are going to expand `%o' to `@FILE', where FILE
5175 is a newly-created temporary filename. The filenames
5176 that would usually be expanded in place of %o will be
5177 written to the temporary file. */
5182 /* Convert OUTFILES into a form suitable for writeargv. */
5184 /* Determine how many are non-NULL. */
5185 for (n_files
= 0, i
= 0; i
< max
; i
++)
5186 n_files
+= outfiles
[i
] != NULL
;
5188 argv
= (char **) alloca (sizeof (char *) * (n_files
+ 1));
5190 /* Copy the strings over. */
5191 for (i
= 0, j
= 0; i
< max
; i
++)
5194 argv
[j
] = CONST_CAST (char *, outfiles
[i
]);
5199 create_at_file (argv
);
5202 for (i
= 0; i
< max
; i
++)
5204 store_arg (outfiles
[i
], 0, 0);
5209 obstack_grow (&obstack
, TARGET_OBJECT_SUFFIX
, strlen (TARGET_OBJECT_SUFFIX
));
5214 this_is_library_file
= 1;
5218 this_is_linker_script
= 1;
5222 outfiles
[input_file_number
] = NULL
;
5226 this_is_output_file
= 1;
5231 unsigned int cur_index
= argbuf
.length ();
5232 /* Handle the {...} following the %W. */
5234 fatal_error ("spec %qs has invalid %<%%W%c%>", spec
, *p
);
5235 p
= handle_braces (p
+ 1);
5239 /* If any args were output, mark the last one for deletion
5241 if (argbuf
.length () != cur_index
)
5242 record_temp_file (argbuf
.last (), 0, 1);
5246 /* %x{OPTION} records OPTION for %X to output. */
5254 /* Skip past the option value and make a copy. */
5256 fatal_error ("spec %qs has invalid %<%%x%c%>", spec
, *p
);
5259 string
= save_string (p1
+ 1, p
- p1
- 2);
5261 /* See if we already recorded this option. */
5262 FOR_EACH_VEC_ELT (linker_options
, ix
, opt
)
5263 if (! strcmp (string
, opt
))
5269 /* This option is new; add it. */
5270 add_linker_option (string
, strlen (string
));
5275 /* Dump out the options accumulated previously using %x. */
5277 do_specs_vec (linker_options
);
5280 /* Dump out the options accumulated previously using -Wa,. */
5282 do_specs_vec (assembler_options
);
5285 /* Dump out the options accumulated previously using -Wp,. */
5287 do_specs_vec (preprocessor_options
);
5290 /* Here are digits and numbers that just process
5291 a certain constant string as a spec. */
5294 value
= do_spec_1 (cc1_spec
, 0, NULL
);
5300 value
= do_spec_1 (cc1plus_spec
, 0, NULL
);
5306 value
= do_spec_1 (asm_spec
, 0, NULL
);
5312 value
= do_spec_1 (asm_final_spec
, 0, NULL
);
5319 const char *const spec
5320 = (input_file_compiler
->cpp_spec
5321 ? input_file_compiler
->cpp_spec
5323 value
= do_spec_1 (spec
, 0, NULL
);
5330 value
= do_spec_1 (endfile_spec
, 0, NULL
);
5336 value
= do_spec_1 (link_spec
, 0, NULL
);
5342 value
= do_spec_1 (lib_spec
, 0, NULL
);
5348 if (multilib_os_dir
== NULL
)
5349 obstack_1grow (&obstack
, '.');
5351 obstack_grow (&obstack
, multilib_os_dir
,
5352 strlen (multilib_os_dir
));
5356 value
= do_spec_1 (libgcc_spec
, 0, NULL
);
5362 /* We assume there is a directory
5363 separator at the end of this string. */
5364 if (target_system_root
)
5366 obstack_grow (&obstack
, target_system_root
,
5367 strlen (target_system_root
));
5368 if (target_sysroot_suffix
)
5369 obstack_grow (&obstack
, target_sysroot_suffix
,
5370 strlen (target_sysroot_suffix
));
5375 value
= do_spec_1 (startfile_spec
, 0, NULL
);
5380 /* Here we define characters other than letters and digits. */
5383 p
= handle_braces (p
);
5389 p
= handle_spec_function (p
, NULL
);
5395 obstack_1grow (&obstack
, '%');
5402 while (p
[len
] && p
[len
] != ' ' && p
[len
] != '%')
5404 suffix_subst
= save_string (p
- 1, len
+ 1);
5409 /* Henceforth ignore the option(s) matching the pattern
5415 int have_wildcard
= 0;
5420 switch_option
= SWITCH_IGNORE
| SWITCH_KEEP_FOR_GCC
;
5422 switch_option
= SWITCH_IGNORE
;
5424 while (p
[len
] && p
[len
] != ' ' && p
[len
] != '\t')
5427 if (p
[len
-1] == '*')
5430 for (i
= 0; i
< n_switches
; i
++)
5431 if (!strncmp (switches
[i
].part1
, p
, len
- have_wildcard
)
5432 && (have_wildcard
|| switches
[i
].part1
[len
] == '\0'))
5434 switches
[i
].live_cond
|= switch_option
;
5435 /* User switch be validated from validate_all_switches.
5436 when the definition is seen from the spec file.
5437 If not defined anywhere, will be rejected. */
5438 if (switches
[i
].known
)
5439 switches
[i
].validated
= true;
5447 if (soft_matched_part
)
5449 if (soft_matched_part
[0])
5450 do_spec_1 (soft_matched_part
, 1, NULL
);
5451 /* Only insert a space after the substitution if it is at the
5452 end of the current sequence. So if:
5454 "%{foo=*:bar%*}%{foo=*:one%*two}"
5456 matches -foo=hello then it will produce:
5458 barhello onehellotwo
5460 if (*p
== 0 || *p
== '}')
5461 do_spec_1 (" ", 0, NULL
);
5464 /* Catch the case where a spec string contains something like
5465 '%{foo:%*}'. i.e. there is no * in the pattern on the left
5466 hand side of the :. */
5467 error ("spec failure: %<%%*%> has not been initialized by pattern match");
5470 /* Process a string found as the value of a spec given by name.
5471 This feature allows individual machine descriptions
5472 to add and use their own specs. */
5475 const char *name
= p
;
5476 struct spec_list
*sl
;
5479 /* The string after the S/P is the name of a spec that is to be
5481 while (*p
&& *p
!= ')')
5484 /* See if it's in the list. */
5485 for (len
= p
- name
, sl
= specs
; sl
; sl
= sl
->next
)
5486 if (sl
->name_len
== len
&& !strncmp (sl
->name
, name
, len
))
5488 name
= *(sl
->ptr_spec
);
5490 fnotice (stderr
, "Processing spec (%s), which is '%s'\n",
5498 value
= do_spec_1 (name
, 0, NULL
);
5503 /* Discard the closing paren. */
5510 error ("spec failure: unrecognized spec option %qc", c
);
5516 /* Backslash: treat next character as ordinary. */
5521 /* Ordinary character: put it into the current argument. */
5522 obstack_1grow (&obstack
, c
);
5526 /* End of string. If we are processing a spec function, we need to
5527 end any pending argument. */
5528 if (processing_spec_function
)
5534 /* Look up a spec function. */
5536 static const struct spec_function
*
5537 lookup_spec_function (const char *name
)
5539 const struct spec_function
*sf
;
5541 for (sf
= static_spec_functions
; sf
->name
!= NULL
; sf
++)
5542 if (strcmp (sf
->name
, name
) == 0)
5548 /* Evaluate a spec function. */
5551 eval_spec_function (const char *func
, const char *args
)
5553 const struct spec_function
*sf
;
5554 const char *funcval
;
5556 /* Saved spec processing context. */
5557 vec
<const_char_p
> save_argbuf
;
5560 int save_delete_this_arg
;
5561 int save_this_is_output_file
;
5562 int save_this_is_library_file
;
5563 int save_input_from_pipe
;
5564 int save_this_is_linker_script
;
5565 const char *save_suffix_subst
;
5567 int save_growing_size
;
5568 void *save_growing_value
= NULL
;
5570 sf
= lookup_spec_function (func
);
5572 fatal_error ("unknown spec function %qs", func
);
5574 /* Push the spec processing context. */
5575 save_argbuf
= argbuf
;
5577 save_arg_going
= arg_going
;
5578 save_delete_this_arg
= delete_this_arg
;
5579 save_this_is_output_file
= this_is_output_file
;
5580 save_this_is_library_file
= this_is_library_file
;
5581 save_this_is_linker_script
= this_is_linker_script
;
5582 save_input_from_pipe
= input_from_pipe
;
5583 save_suffix_subst
= suffix_subst
;
5585 /* If we have some object growing now, finalize it so the args and function
5586 eval proceed from a cleared context. This is needed to prevent the first
5587 constructed arg from mistakenly including the growing value. We'll push
5588 this value back on the obstack once the function evaluation is done, to
5589 restore a consistent processing context for our caller. This is fine as
5590 the address of growing objects isn't guaranteed to remain stable until
5591 they are finalized, and we expect this situation to be rare enough for
5592 the extra copy not to be an issue. */
5593 save_growing_size
= obstack_object_size (&obstack
);
5594 if (save_growing_size
> 0)
5595 save_growing_value
= obstack_finish (&obstack
);
5597 /* Create a new spec processing context, and build the function
5601 if (do_spec_2 (args
) < 0)
5602 fatal_error ("error in args to spec function %qs", func
);
5604 /* argbuf_index is an index for the next argument to be inserted, and
5605 so contains the count of the args already inserted. */
5607 funcval
= (*sf
->func
) (argbuf
.length (),
5610 /* Pop the spec processing context. */
5612 argbuf
= save_argbuf
;
5614 arg_going
= save_arg_going
;
5615 delete_this_arg
= save_delete_this_arg
;
5616 this_is_output_file
= save_this_is_output_file
;
5617 this_is_library_file
= save_this_is_library_file
;
5618 this_is_linker_script
= save_this_is_linker_script
;
5619 input_from_pipe
= save_input_from_pipe
;
5620 suffix_subst
= save_suffix_subst
;
5622 if (save_growing_size
> 0)
5623 obstack_grow (&obstack
, save_growing_value
, save_growing_size
);
5628 /* Handle a spec function call of the form:
5632 ARGS is processed as a spec in a separate context and split into an
5633 argument vector in the normal fashion. The function returns a string
5634 containing a spec which we then process in the caller's context, or
5635 NULL if no processing is required.
5637 If RETVAL_NONNULL is not NULL, then store a bool whether function
5638 returned non-NULL. */
5641 handle_spec_function (const char *p
, bool *retval_nonnull
)
5644 const char *endp
, *funcval
;
5647 processing_spec_function
++;
5649 /* Get the function name. */
5650 for (endp
= p
; *endp
!= '\0'; endp
++)
5652 if (*endp
== '(') /* ) */
5654 /* Only allow [A-Za-z0-9], -, and _ in function names. */
5655 if (!ISALNUM (*endp
) && !(*endp
== '-' || *endp
== '_'))
5656 fatal_error ("malformed spec function name");
5658 if (*endp
!= '(') /* ) */
5659 fatal_error ("no arguments for spec function");
5660 func
= save_string (p
, endp
- p
);
5663 /* Get the arguments. */
5664 for (count
= 0; *endp
!= '\0'; endp
++)
5673 else if (*endp
== '(') /* ) */
5678 fatal_error ("malformed spec function arguments");
5679 args
= save_string (p
, endp
- p
);
5682 /* p now points to just past the end of the spec function expression. */
5684 funcval
= eval_spec_function (func
, args
);
5685 if (funcval
!= NULL
&& do_spec_1 (funcval
, 0, NULL
) < 0)
5688 *retval_nonnull
= funcval
!= NULL
;
5693 processing_spec_function
--;
5698 /* Inline subroutine of handle_braces. Returns true if the current
5699 input suffix matches the atom bracketed by ATOM and END_ATOM. */
5701 input_suffix_matches (const char *atom
, const char *end_atom
)
5703 return (input_suffix
5704 && !strncmp (input_suffix
, atom
, end_atom
- atom
)
5705 && input_suffix
[end_atom
- atom
] == '\0');
5708 /* Subroutine of handle_braces. Returns true if the current
5709 input file's spec name matches the atom bracketed by ATOM and END_ATOM. */
5711 input_spec_matches (const char *atom
, const char *end_atom
)
5713 return (input_file_compiler
5714 && input_file_compiler
->suffix
5715 && input_file_compiler
->suffix
[0] != '\0'
5716 && !strncmp (input_file_compiler
->suffix
+ 1, atom
,
5718 && input_file_compiler
->suffix
[end_atom
- atom
+ 1] == '\0');
5721 /* Subroutine of handle_braces. Returns true if a switch
5722 matching the atom bracketed by ATOM and END_ATOM appeared on the
5725 switch_matches (const char *atom
, const char *end_atom
, int starred
)
5728 int len
= end_atom
- atom
;
5729 int plen
= starred
? len
: -1;
5731 for (i
= 0; i
< n_switches
; i
++)
5732 if (!strncmp (switches
[i
].part1
, atom
, len
)
5733 && (starred
|| switches
[i
].part1
[len
] == '\0')
5734 && check_live_switch (i
, plen
))
5737 /* Check if a switch with separated form matching the atom.
5738 We check -D and -U switches. */
5739 else if (switches
[i
].args
!= 0)
5741 if ((*switches
[i
].part1
== 'D' || *switches
[i
].part1
== 'U')
5742 && *switches
[i
].part1
== atom
[0])
5744 if (!strncmp (switches
[i
].args
[0], &atom
[1], len
- 1)
5745 && (starred
|| (switches
[i
].part1
[1] == '\0'
5746 && switches
[i
].args
[0][len
- 1] == '\0'))
5747 && check_live_switch (i
, (starred
? 1 : -1)))
5755 /* Inline subroutine of handle_braces. Mark all of the switches which
5756 match ATOM (extends to END_ATOM; STARRED indicates whether there
5757 was a star after the atom) for later processing. */
5759 mark_matching_switches (const char *atom
, const char *end_atom
, int starred
)
5762 int len
= end_atom
- atom
;
5763 int plen
= starred
? len
: -1;
5765 for (i
= 0; i
< n_switches
; i
++)
5766 if (!strncmp (switches
[i
].part1
, atom
, len
)
5767 && (starred
|| switches
[i
].part1
[len
] == '\0')
5768 && check_live_switch (i
, plen
))
5769 switches
[i
].ordering
= 1;
5772 /* Inline subroutine of handle_braces. Process all the currently
5773 marked switches through give_switch, and clear the marks. */
5775 process_marked_switches (void)
5779 for (i
= 0; i
< n_switches
; i
++)
5780 if (switches
[i
].ordering
== 1)
5782 switches
[i
].ordering
= 0;
5787 /* Handle a %{ ... } construct. P points just inside the leading {.
5788 Returns a pointer one past the end of the brace block, or 0
5789 if we call do_spec_1 and that returns -1. */
5792 handle_braces (const char *p
)
5794 const char *atom
, *end_atom
;
5795 const char *d_atom
= NULL
, *d_end_atom
= NULL
;
5796 const char *orig
= p
;
5804 bool a_must_be_last
= false;
5805 bool ordered_set
= false;
5806 bool disjunct_set
= false;
5807 bool disj_matched
= false;
5808 bool disj_starred
= true;
5809 bool n_way_choice
= false;
5810 bool n_way_matched
= false;
5812 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
5819 /* Scan one "atom" (S in the description above of %{}, possibly
5820 with '!', '.', '@', ',', or '*' modifiers). */
5822 a_is_suffix
= false;
5823 a_is_starred
= false;
5824 a_is_negated
= false;
5825 a_is_spectype
= false;
5829 p
++, a_is_negated
= true;
5832 if (*p
== '%' && p
[1] == ':')
5836 p
= handle_spec_function (p
+ 2, &a_matched
);
5841 p
++, a_is_suffix
= true;
5843 p
++, a_is_spectype
= true;
5846 while (ISIDNUM (*p
) || *p
== '-' || *p
== '+' || *p
== '='
5847 || *p
== ',' || *p
== '.' || *p
== '@')
5852 p
++, a_is_starred
= 1;
5859 /* Substitute the switch(es) indicated by the current atom. */
5861 if (disjunct_set
|| n_way_choice
|| a_is_negated
|| a_is_suffix
5862 || a_is_spectype
|| atom
== end_atom
)
5865 mark_matching_switches (atom
, end_atom
, a_is_starred
);
5868 process_marked_switches ();
5872 /* Substitute some text if the current atom appears as a switch
5874 disjunct_set
= true;
5878 if (atom
&& atom
== end_atom
)
5880 if (!n_way_choice
|| disj_matched
|| *p
== '|'
5881 || a_is_negated
|| a_is_suffix
|| a_is_spectype
5885 /* An empty term may appear as the last choice of an
5886 N-way choice set; it means "otherwise". */
5887 a_must_be_last
= true;
5888 disj_matched
= !n_way_matched
;
5889 disj_starred
= false;
5893 if ((a_is_suffix
|| a_is_spectype
) && a_is_starred
)
5897 disj_starred
= false;
5899 /* Don't bother testing this atom if we already have a
5901 if (!disj_matched
&& !n_way_matched
)
5904 /* a_matched is already set by handle_spec_function. */;
5905 else if (a_is_suffix
)
5906 a_matched
= input_suffix_matches (atom
, end_atom
);
5907 else if (a_is_spectype
)
5908 a_matched
= input_spec_matches (atom
, end_atom
);
5910 a_matched
= switch_matches (atom
, end_atom
, a_is_starred
);
5912 if (a_matched
!= a_is_negated
)
5914 disj_matched
= true;
5916 d_end_atom
= end_atom
;
5923 /* Found the body, that is, the text to substitute if the
5924 current disjunction matches. */
5925 p
= process_brace_body (p
+ 1, d_atom
, d_end_atom
, disj_starred
,
5926 disj_matched
&& !n_way_matched
);
5930 /* If we have an N-way choice, reset state for the next
5934 n_way_choice
= true;
5935 n_way_matched
|= disj_matched
;
5936 disj_matched
= false;
5937 disj_starred
= true;
5938 d_atom
= d_end_atom
= NULL
;
5947 while (*p
++ != '}');
5952 fatal_error ("braced spec %qs is invalid at %qc", orig
, *p
);
5957 /* Subroutine of handle_braces. Scan and process a brace substitution body
5958 (X in the description of %{} syntax). P points one past the colon;
5959 ATOM and END_ATOM bracket the first atom which was found to be true
5960 (present) in the current disjunction; STARRED indicates whether all
5961 the atoms in the current disjunction were starred (for syntax validation);
5962 MATCHED indicates whether the disjunction matched or not, and therefore
5963 whether or not the body is to be processed through do_spec_1 or just
5964 skipped. Returns a pointer to the closing } or ;, or 0 if do_spec_1
5968 process_brace_body (const char *p
, const char *atom
, const char *end_atom
,
5969 int starred
, int matched
)
5971 const char *body
, *end_body
;
5972 unsigned int nesting_level
;
5973 bool have_subst
= false;
5975 /* Locate the closing } or ;, honoring nested braces.
5976 Trim trailing whitespace. */
5985 if (!--nesting_level
)
5988 else if (*p
== ';' && nesting_level
== 1)
5990 else if (*p
== '%' && p
[1] == '*' && nesting_level
== 1)
5992 else if (*p
== '\0')
5998 while (end_body
[-1] == ' ' || end_body
[-1] == '\t')
6001 if (have_subst
&& !starred
)
6006 /* Copy the substitution body to permanent storage and execute it.
6007 If have_subst is false, this is a simple matter of running the
6008 body through do_spec_1... */
6009 char *string
= save_string (body
, end_body
- body
);
6012 if (do_spec_1 (string
, 0, NULL
) < 0)
6017 /* ... but if have_subst is true, we have to process the
6018 body once for each matching switch, with %* set to the
6019 variant part of the switch. */
6020 unsigned int hard_match_len
= end_atom
- atom
;
6023 for (i
= 0; i
< n_switches
; i
++)
6024 if (!strncmp (switches
[i
].part1
, atom
, hard_match_len
)
6025 && check_live_switch (i
, hard_match_len
))
6027 if (do_spec_1 (string
, 0,
6028 &switches
[i
].part1
[hard_match_len
]) < 0)
6030 /* Pass any arguments this switch has. */
6032 suffix_subst
= NULL
;
6040 fatal_error ("braced spec body %qs is invalid", body
);
6043 /* Return 0 iff switch number SWITCHNUM is obsoleted by a later switch
6044 on the command line. PREFIX_LENGTH is the length of XXX in an {XXX*}
6045 spec, or -1 if either exact match or %* is used.
6047 A -O switch is obsoleted by a later -O switch. A -f, -g, -m, or -W switch
6048 whose value does not begin with "no-" is obsoleted by the same value
6049 with the "no-", similarly for a switch with the "no-" prefix. */
6052 check_live_switch (int switchnum
, int prefix_length
)
6054 const char *name
= switches
[switchnum
].part1
;
6057 /* If we already processed this switch and determined if it was
6058 live or not, return our past determination. */
6059 if (switches
[switchnum
].live_cond
!= 0)
6060 return ((switches
[switchnum
].live_cond
& SWITCH_LIVE
) != 0
6061 && (switches
[switchnum
].live_cond
& SWITCH_FALSE
) == 0
6062 && (switches
[switchnum
].live_cond
& SWITCH_IGNORE_PERMANENTLY
)
6065 /* In the common case of {<at-most-one-letter>*}, a negating
6066 switch would always match, so ignore that case. We will just
6067 send the conflicting switches to the compiler phase. */
6068 if (prefix_length
>= 0 && prefix_length
<= 1)
6071 /* Now search for duplicate in a manner that depends on the name. */
6075 for (i
= switchnum
+ 1; i
< n_switches
; i
++)
6076 if (switches
[i
].part1
[0] == 'O')
6078 switches
[switchnum
].validated
= true;
6079 switches
[switchnum
].live_cond
= SWITCH_FALSE
;
6084 case 'W': case 'f': case 'm': case 'g':
6085 if (! strncmp (name
+ 1, "no-", 3))
6087 /* We have Xno-YYY, search for XYYY. */
6088 for (i
= switchnum
+ 1; i
< n_switches
; i
++)
6089 if (switches
[i
].part1
[0] == name
[0]
6090 && ! strcmp (&switches
[i
].part1
[1], &name
[4]))
6092 /* --specs are validated with the validate_switches mechanism. */
6093 if (switches
[switchnum
].known
)
6094 switches
[switchnum
].validated
= true;
6095 switches
[switchnum
].live_cond
= SWITCH_FALSE
;
6101 /* We have XYYY, search for Xno-YYY. */
6102 for (i
= switchnum
+ 1; i
< n_switches
; i
++)
6103 if (switches
[i
].part1
[0] == name
[0]
6104 && switches
[i
].part1
[1] == 'n'
6105 && switches
[i
].part1
[2] == 'o'
6106 && switches
[i
].part1
[3] == '-'
6107 && !strcmp (&switches
[i
].part1
[4], &name
[1]))
6109 /* --specs are validated with the validate_switches mechanism. */
6110 if (switches
[switchnum
].known
)
6111 switches
[switchnum
].validated
= true;
6112 switches
[switchnum
].live_cond
= SWITCH_FALSE
;
6119 /* Otherwise the switch is live. */
6120 switches
[switchnum
].live_cond
|= SWITCH_LIVE
;
6124 /* Pass a switch to the current accumulating command
6125 in the same form that we received it.
6126 SWITCHNUM identifies the switch; it is an index into
6127 the vector of switches gcc received, which is `switches'.
6128 This cannot fail since it never finishes a command line.
6130 If OMIT_FIRST_WORD is nonzero, then we omit .part1 of the argument. */
6133 give_switch (int switchnum
, int omit_first_word
)
6135 if ((switches
[switchnum
].live_cond
& SWITCH_IGNORE
) != 0)
6138 if (!omit_first_word
)
6140 do_spec_1 ("-", 0, NULL
);
6141 do_spec_1 (switches
[switchnum
].part1
, 1, NULL
);
6144 if (switches
[switchnum
].args
!= 0)
6147 for (p
= switches
[switchnum
].args
; *p
; p
++)
6149 const char *arg
= *p
;
6151 do_spec_1 (" ", 0, NULL
);
6154 unsigned length
= strlen (arg
);
6157 while (length
-- && !IS_DIR_SEPARATOR (arg
[length
]))
6158 if (arg
[length
] == '.')
6160 (CONST_CAST (char *, arg
))[length
] = 0;
6164 do_spec_1 (arg
, 1, NULL
);
6166 (CONST_CAST (char *, arg
))[length
] = '.';
6167 do_spec_1 (suffix_subst
, 1, NULL
);
6170 do_spec_1 (arg
, 1, NULL
);
6174 do_spec_1 (" ", 0, NULL
);
6175 switches
[switchnum
].validated
= true;
6178 /* Print GCC configuration (e.g. version, thread model, target,
6179 configuration_arguments) to a given FILE. */
6182 print_configuration (FILE *file
)
6187 fnotice (file
, "Target: %s\n", spec_machine
);
6188 fnotice (file
, "Configured with: %s\n", configuration_arguments
);
6190 #ifdef THREAD_MODEL_SPEC
6191 /* We could have defined THREAD_MODEL_SPEC to "%*" by default,
6192 but there's no point in doing all this processing just to get
6193 thread_model back. */
6194 obstack_init (&obstack
);
6195 do_spec_1 (THREAD_MODEL_SPEC
, 0, thread_model
);
6196 obstack_1grow (&obstack
, '\0');
6197 thrmod
= XOBFINISH (&obstack
, const char *);
6199 thrmod
= thread_model
;
6202 fnotice (file
, "Thread model: %s\n", thrmod
);
6204 /* compiler_version is truncated at the first space when initialized
6205 from version string, so truncate version_string at the first space
6206 before comparing. */
6207 for (n
= 0; version_string
[n
]; n
++)
6208 if (version_string
[n
] == ' ')
6211 if (! strncmp (version_string
, compiler_version
, n
)
6212 && compiler_version
[n
] == 0)
6213 fnotice (file
, "gcc version %s %s\n\n", version_string
,
6216 fnotice (file
, "gcc driver version %s %sexecuting gcc version %s\n\n",
6217 version_string
, pkgversion_string
, compiler_version
);
6221 #define RETRY_ICE_ATTEMPTS 3
6223 /* Returns true if FILE1 and FILE2 contain equivalent data, 0 otherwise. */
6226 files_equal_p (char *file1
, char *file2
)
6228 struct stat st1
, st2
;
6231 const int bufsize
= 8192;
6232 char *buf
= XNEWVEC (char, bufsize
);
6234 fd1
= open (file1
, O_RDONLY
);
6235 fd2
= open (file2
, O_RDONLY
);
6237 if (fd1
< 0 || fd2
< 0)
6240 if (fstat (fd1
, &st1
) < 0 || fstat (fd2
, &st2
) < 0)
6243 if (st1
.st_size
!= st2
.st_size
)
6246 for (n
= st1
.st_size
; n
; n
-= len
)
6249 if ((int) len
> bufsize
/ 2)
6252 if (read (fd1
, buf
, len
) != (int) len
6253 || read (fd2
, buf
+ bufsize
/ 2, len
) != (int) len
)
6258 if (memcmp (buf
, buf
+ bufsize
/ 2, len
) != 0)
6275 /* Check that compiler's output doesn't differ across runs.
6276 TEMP_STDOUT_FILES and TEMP_STDERR_FILES are arrays of files, containing
6277 stdout and stderr for each compiler run. Return true if all of
6278 TEMP_STDOUT_FILES and TEMP_STDERR_FILES are equivalent. */
6281 check_repro (char **temp_stdout_files
, char **temp_stderr_files
)
6284 for (i
= 0; i
< RETRY_ICE_ATTEMPTS
- 2; ++i
)
6286 if (!files_equal_p (temp_stdout_files
[i
], temp_stdout_files
[i
+ 1])
6287 || !files_equal_p (temp_stderr_files
[i
], temp_stderr_files
[i
+ 1]))
6289 fnotice (stderr
, "The bug is not reproducible, so it is"
6290 " likely a hardware or OS problem.\n");
6294 return i
== RETRY_ICE_ATTEMPTS
- 2;
6297 enum attempt_status
{
6298 ATTEMPT_STATUS_FAIL_TO_RUN
,
6299 ATTEMPT_STATUS_SUCCESS
,
6304 /* Run compiler with arguments NEW_ARGV to reproduce the ICE, storing stdout
6305 to OUT_TEMP and stderr to ERR_TEMP. If APPEND is TRUE, append to OUT_TEMP
6306 and ERR_TEMP instead of truncating. If EMIT_SYSTEM_INFO is TRUE, also write
6307 GCC configuration into to ERR_TEMP. Return ATTEMPT_STATUS_FAIL_TO_RUN if
6308 compiler failed to run, ATTEMPT_STATUS_ICE if compiled ICE-ed and
6309 ATTEMPT_STATUS_SUCCESS otherwise. */
6311 static enum attempt_status
6312 run_attempt (const char **new_argv
, const char *out_temp
,
6313 const char *err_temp
, int emit_system_info
, int append
)
6316 if (emit_system_info
)
6318 FILE *file_out
= fopen (err_temp
, "a");
6319 print_configuration (file_out
);
6325 struct pex_obj
*pex
;
6327 int pex_flags
= PEX_USE_PIPES
| PEX_LAST
;
6328 enum attempt_status status
= ATTEMPT_STATUS_FAIL_TO_RUN
;
6331 pex_flags
|= PEX_STDOUT_APPEND
| PEX_STDERR_APPEND
;
6333 pex
= pex_init (PEX_USE_PIPES
, new_argv
[0], NULL
);
6335 fatal_error ("pex_init failed: %m");
6337 errmsg
= pex_run (pex
, pex_flags
, new_argv
[0],
6338 CONST_CAST2 (char *const *, const char **, &new_argv
[1]), out_temp
,
6343 fatal_error (errmsg
);
6347 pfatal_with_name (errmsg
);
6351 if (!pex_get_status (pex
, 1, &exit_status
))
6354 switch (WEXITSTATUS (exit_status
))
6357 status
= ATTEMPT_STATUS_ICE
;
6360 case SUCCESS_EXIT_CODE
:
6361 status
= ATTEMPT_STATUS_SUCCESS
;
6373 /* This routine adds preprocessed source code into the given ERR_FILE.
6374 To do this, it adds "-E" to NEW_ARGV and execute RUN_ATTEMPT routine to
6375 add information in report file. RUN_ATTEMPT should return
6376 ATTEMPT_STATUS_SUCCESS, in other case we cannot generate the report. */
6379 do_report_bug (const char **new_argv
, const int nargs
,
6380 char **out_file
, char **err_file
)
6383 int fd
= open (*out_file
, O_RDWR
| O_APPEND
);
6386 write (fd
, "\n//", 3);
6387 for (i
= 0; i
< nargs
; i
++)
6390 write (fd
, new_argv
[i
], strlen (new_argv
[i
]));
6392 write (fd
, "\n\n", 2);
6394 new_argv
[nargs
] = "-E";
6395 new_argv
[nargs
+ 1] = NULL
;
6397 status
= run_attempt (new_argv
, *out_file
, *err_file
, 0, 1);
6399 if (status
== ATTEMPT_STATUS_SUCCESS
)
6401 fnotice (stderr
, "Preprocessed source stored into %s file,"
6402 " please attach this to your bugreport.\n", *out_file
);
6403 /* Make sure it is not deleted. */
6409 /* Append string STR to file FILE. */
6412 append_text (char *file
, const char *str
)
6414 int fd
= open (file
, O_RDWR
| O_APPEND
);
6418 write (fd
, str
, strlen (str
));
6422 /* Try to reproduce ICE. If bug is reproducible, generate report .err file
6423 containing GCC configuration, backtrace, compiler's command line options
6424 and preprocessed source code. */
6427 try_generate_repro (const char **argv
)
6429 int i
, nargs
, out_arg
= -1, quiet
= 0, attempt
;
6430 const char **new_argv
;
6431 char *temp_files
[RETRY_ICE_ATTEMPTS
* 2];
6432 char **temp_stdout_files
= &temp_files
[0];
6433 char **temp_stderr_files
= &temp_files
[RETRY_ICE_ATTEMPTS
];
6435 if (gcc_input_filename
== NULL
|| ! strcmp (gcc_input_filename
, "-"))
6438 for (nargs
= 0; argv
[nargs
] != NULL
; ++nargs
)
6439 /* Only retry compiler ICEs, not preprocessor ones. */
6440 if (! strcmp (argv
[nargs
], "-E"))
6442 else if (argv
[nargs
][0] == '-' && argv
[nargs
][1] == 'o')
6449 /* If the compiler is going to output any time information,
6450 it might varry between invocations. */
6451 else if (! strcmp (argv
[nargs
], "-quiet"))
6453 else if (! strcmp (argv
[nargs
], "-ftime-report"))
6456 if (out_arg
== -1 || !quiet
)
6459 memset (temp_files
, '\0', sizeof (temp_files
));
6460 new_argv
= XALLOCAVEC (const char *, nargs
+ 4);
6461 memcpy (new_argv
, argv
, (nargs
+ 1) * sizeof (const char *));
6462 new_argv
[nargs
++] = "-frandom-seed=0";
6463 new_argv
[nargs
++] = "-fdump-noaddr";
6464 new_argv
[nargs
] = NULL
;
6465 if (new_argv
[out_arg
][2] == '\0')
6466 new_argv
[out_arg
+ 1] = "-";
6468 new_argv
[out_arg
] = "-o-";
6471 for (attempt
= 0; attempt
< RETRY_ICE_ATTEMPTS
; ++attempt
)
6473 int emit_system_info
= 0;
6475 temp_stdout_files
[attempt
] = make_temp_file (".out");
6476 temp_stderr_files
[attempt
] = make_temp_file (".err");
6478 if (attempt
== RETRY_ICE_ATTEMPTS
- 1)
6481 emit_system_info
= 1;
6484 if (emit_system_info
)
6485 append_text (temp_stderr_files
[attempt
], "/*\n");
6487 status
= run_attempt (new_argv
, temp_stdout_files
[attempt
],
6488 temp_stderr_files
[attempt
], emit_system_info
,
6491 if (emit_system_info
)
6492 append_text (temp_stderr_files
[attempt
], "*/\n");
6494 if (status
!= ATTEMPT_STATUS_ICE
)
6496 fnotice (stderr
, "The bug is not reproducible, so it is"
6497 " likely a hardware or OS problem.\n");
6502 if (!check_repro (temp_stdout_files
, temp_stderr_files
))
6505 /* In final attempt we append compiler options and preprocesssed code to last
6506 generated .err file with configuration and backtrace. */
6507 do_report_bug (new_argv
, nargs
,
6508 &temp_stderr_files
[RETRY_ICE_ATTEMPTS
- 1],
6509 &temp_stdout_files
[RETRY_ICE_ATTEMPTS
- 1]);
6512 for (i
= 0; i
< RETRY_ICE_ATTEMPTS
* 2; i
++)
6515 unlink (temp_stdout_files
[i
]);
6516 free (temp_stdout_files
[i
]);
6520 /* Search for a file named NAME trying various prefixes including the
6521 user's -B prefix and some standard ones.
6522 Return the absolute file name found. If nothing is found, return NAME. */
6525 find_file (const char *name
)
6527 char *newname
= find_a_file (&startfile_prefixes
, name
, R_OK
, true);
6528 return newname
? newname
: name
;
6531 /* Determine whether a directory exists. If LINKER, return 0 for
6532 certain fixed names not needed by the linker. */
6535 is_directory (const char *path1
, bool linker
)
6542 /* Ensure the string ends with "/.". The resulting path will be a
6543 directory even if the given path is a symbolic link. */
6544 len1
= strlen (path1
);
6545 path
= (char *) alloca (3 + len1
);
6546 memcpy (path
, path1
, len1
);
6548 if (!IS_DIR_SEPARATOR (cp
[-1]))
6549 *cp
++ = DIR_SEPARATOR
;
6553 /* Exclude directories that the linker is known to search. */
6555 && IS_DIR_SEPARATOR (path
[0])
6557 && filename_ncmp (path
+ 1, "lib", 3) == 0)
6559 && filename_ncmp (path
+ 1, "usr", 3) == 0
6560 && IS_DIR_SEPARATOR (path
[4])
6561 && filename_ncmp (path
+ 5, "lib", 3) == 0)))
6564 return (stat (path
, &st
) >= 0 && S_ISDIR (st
.st_mode
));
6567 /* Set up the various global variables to indicate that we're processing
6568 the input file named FILENAME. */
6571 set_input (const char *filename
)
6575 gcc_input_filename
= filename
;
6576 input_filename_length
= strlen (gcc_input_filename
);
6577 input_basename
= lbasename (gcc_input_filename
);
6579 /* Find a suffix starting with the last period,
6580 and set basename_length to exclude that suffix. */
6581 basename_length
= strlen (input_basename
);
6582 suffixed_basename_length
= basename_length
;
6583 p
= input_basename
+ basename_length
;
6584 while (p
!= input_basename
&& *p
!= '.')
6586 if (*p
== '.' && p
!= input_basename
)
6588 basename_length
= p
- input_basename
;
6589 input_suffix
= p
+ 1;
6594 /* If a spec for 'g', 'u', or 'U' is seen with -save-temps then
6595 we will need to do a stat on the gcc_input_filename. The
6596 INPUT_STAT_SET signals that the stat is needed. */
6600 /* On fatal signals, delete all the temporary files. */
6603 fatal_signal (int signum
)
6605 signal (signum
, SIG_DFL
);
6606 delete_failure_queue ();
6607 delete_temp_files ();
6608 /* Get the same signal again, this time not handled,
6609 so its normal effect occurs. */
6610 kill (getpid (), signum
);
6613 /* Compare the contents of the two files named CMPFILE[0] and
6614 CMPFILE[1]. Return zero if they're identical, nonzero
6618 compare_files (char *cmpfile
[])
6621 FILE *temp
[2] = { NULL
, NULL
};
6627 void *map
[2] = { NULL
, NULL
};
6629 for (i
= 0; i
< 2; i
++)
6633 if (stat (cmpfile
[i
], &st
) < 0 || !S_ISREG (st
.st_mode
))
6635 error ("%s: could not determine length of compare-debug file %s",
6636 gcc_input_filename
, cmpfile
[i
]);
6641 length
[i
] = st
.st_size
;
6644 if (!ret
&& length
[0] != length
[1])
6646 error ("%s: -fcompare-debug failure (length)", gcc_input_filename
);
6651 for (i
= 0; i
< 2; i
++)
6653 int fd
= open (cmpfile
[i
], O_RDONLY
);
6656 error ("%s: could not open compare-debug file %s",
6657 gcc_input_filename
, cmpfile
[i
]);
6662 map
[i
] = mmap (NULL
, length
[i
], PROT_READ
, MAP_PRIVATE
, fd
, 0);
6665 if (map
[i
] == (void *) MAP_FAILED
)
6674 if (memcmp (map
[0], map
[1], length
[0]) != 0)
6676 error ("%s: -fcompare-debug failure", gcc_input_filename
);
6681 for (i
= 0; i
< 2; i
++)
6683 munmap ((caddr_t
) map
[i
], length
[i
]);
6692 for (i
= 0; i
< 2; i
++)
6694 temp
[i
] = fopen (cmpfile
[i
], "r");
6697 error ("%s: could not open compare-debug file %s",
6698 gcc_input_filename
, cmpfile
[i
]);
6704 if (!ret
&& temp
[0] && temp
[1])
6708 c0
= fgetc (temp
[0]);
6709 c1
= fgetc (temp
[1]);
6713 error ("%s: -fcompare-debug failure",
6714 gcc_input_filename
);
6723 for (i
= 1; i
>= 0; i
--)
6732 /* The top-level "main" within the driver would be ~1000 lines long.
6733 This class breaks it up into smaller functions and contains some
6734 state shared by them. */
6739 int main (int argc
, char **argv
);
6742 void set_progname (const char *argv0
) const;
6743 void expand_at_files (int *argc
, char ***argv
) const;
6744 void decode_argv (int argc
, const char **argv
);
6745 void global_initializations ();
6746 void build_multilib_strings () const;
6747 void set_up_specs () const;
6748 void putenv_COLLECT_GCC (const char *argv0
) const;
6749 void maybe_putenv_COLLECT_LTO_WRAPPER () const;
6750 void handle_unrecognized_options () const;
6751 int maybe_print_and_exit () const;
6752 bool prepare_infiles ();
6753 void do_spec_on_infiles () const;
6754 void maybe_run_linker (const char *argv0
) const;
6755 void final_actions () const;
6756 int get_exit_code () const;
6759 char *explicit_link_files
;
6760 struct cl_decoded_option
*decoded_options
;
6761 unsigned int decoded_options_count
;
6764 /* Implement the top-level "main" within the driver in terms of
6767 extern int main (int, char **);
6770 main (int argc
, char **argv
)
6774 return d
.main (argc
, argv
);
6777 /* driver::main is implemented as a series of driver:: method calls. */
6780 driver::main (int argc
, char **argv
)
6784 set_progname (argv
[0]);
6785 expand_at_files (&argc
, &argv
);
6786 decode_argv (argc
, const_cast <const char **> (argv
));
6787 global_initializations ();
6788 build_multilib_strings ();
6790 putenv_COLLECT_GCC (argv
[0]);
6791 maybe_putenv_COLLECT_LTO_WRAPPER ();
6792 handle_unrecognized_options ();
6794 if (!maybe_print_and_exit ())
6797 early_exit
= prepare_infiles ();
6799 return get_exit_code ();
6801 do_spec_on_infiles ();
6802 maybe_run_linker (argv
[0]);
6804 return get_exit_code ();
6807 /* Locate the final component of argv[0] after any leading path, and set
6808 the program name accordingly. */
6811 driver::set_progname (const char *argv0
) const
6813 const char *p
= argv0
+ strlen (argv0
);
6814 while (p
!= argv0
&& !IS_DIR_SEPARATOR (p
[-1]))
6818 xmalloc_set_program_name (progname
);
6821 /* Expand any @ files within the command-line args,
6822 setting at_file_supplied if any were expanded. */
6825 driver::expand_at_files (int *argc
, char ***argv
) const
6827 char **old_argv
= *argv
;
6829 expandargv (argc
, argv
);
6831 /* Determine if any expansions were made. */
6832 if (*argv
!= old_argv
)
6833 at_file_supplied
= true;
6836 /* Decode the command-line arguments from argc/argv into the
6837 decoded_options array. */
6840 driver::decode_argv (int argc
, const char **argv
)
6842 /* Register the language-independent parameters. */
6843 global_init_params ();
6846 init_options_struct (&global_options
, &global_options_set
);
6848 decode_cmdline_options_to_array (argc
, argv
,
6850 &decoded_options
, &decoded_options_count
);
6853 /* Perform various initializations and setup. */
6856 driver::global_initializations ()
6858 /* Unlock the stdio streams. */
6859 unlock_std_streams ();
6861 gcc_init_libintl ();
6863 diagnostic_initialize (global_dc
, 0);
6865 #ifdef GCC_DRIVER_HOST_INITIALIZATION
6866 /* Perform host dependent initialization when needed. */
6867 GCC_DRIVER_HOST_INITIALIZATION
;
6870 if (atexit (delete_temp_files
) != 0)
6871 fatal_error ("atexit failed");
6873 if (signal (SIGINT
, SIG_IGN
) != SIG_IGN
)
6874 signal (SIGINT
, fatal_signal
);
6876 if (signal (SIGHUP
, SIG_IGN
) != SIG_IGN
)
6877 signal (SIGHUP
, fatal_signal
);
6879 if (signal (SIGTERM
, SIG_IGN
) != SIG_IGN
)
6880 signal (SIGTERM
, fatal_signal
);
6882 if (signal (SIGPIPE
, SIG_IGN
) != SIG_IGN
)
6883 signal (SIGPIPE
, fatal_signal
);
6886 /* We *MUST* set SIGCHLD to SIG_DFL so that the wait4() call will
6887 receive the signal. A different setting is inheritable */
6888 signal (SIGCHLD
, SIG_DFL
);
6891 /* Parsing and gimplification sometimes need quite large stack.
6892 Increase stack size limits if possible. */
6893 stack_limit_increase (64 * 1024 * 1024);
6895 /* Allocate the argument vector. */
6898 obstack_init (&obstack
);
6901 /* Build multilib_select, et. al from the separate lines that make up each
6902 multilib selection. */
6905 driver::build_multilib_strings () const
6909 const char *const *q
= multilib_raw
;
6912 obstack_init (&multilib_obstack
);
6913 while ((p
= *q
++) != (char *) 0)
6914 obstack_grow (&multilib_obstack
, p
, strlen (p
));
6916 obstack_1grow (&multilib_obstack
, 0);
6917 multilib_select
= XOBFINISH (&multilib_obstack
, const char *);
6919 q
= multilib_matches_raw
;
6920 while ((p
= *q
++) != (char *) 0)
6921 obstack_grow (&multilib_obstack
, p
, strlen (p
));
6923 obstack_1grow (&multilib_obstack
, 0);
6924 multilib_matches
= XOBFINISH (&multilib_obstack
, const char *);
6926 q
= multilib_exclusions_raw
;
6927 while ((p
= *q
++) != (char *) 0)
6928 obstack_grow (&multilib_obstack
, p
, strlen (p
));
6930 obstack_1grow (&multilib_obstack
, 0);
6931 multilib_exclusions
= XOBFINISH (&multilib_obstack
, const char *);
6933 q
= multilib_reuse_raw
;
6934 while ((p
= *q
++) != (char *) 0)
6935 obstack_grow (&multilib_obstack
, p
, strlen (p
));
6937 obstack_1grow (&multilib_obstack
, 0);
6938 multilib_reuse
= XOBFINISH (&multilib_obstack
, const char *);
6941 for (size_t i
= 0; i
< ARRAY_SIZE (multilib_defaults_raw
); i
++)
6944 obstack_1grow (&multilib_obstack
, ' ');
6945 obstack_grow (&multilib_obstack
,
6946 multilib_defaults_raw
[i
],
6947 strlen (multilib_defaults_raw
[i
]));
6951 obstack_1grow (&multilib_obstack
, 0);
6952 multilib_defaults
= XOBFINISH (&multilib_obstack
, const char *);
6956 /* Set up the spec-handling machinery. */
6959 driver::set_up_specs () const
6964 #ifdef INIT_ENVIRONMENT
6965 /* Set up any other necessary machine specific environment variables. */
6966 xputenv (INIT_ENVIRONMENT
);
6969 /* Make a table of what switches there are (switches, n_switches).
6970 Make a table of specified input files (infiles, n_infiles).
6971 Decode switches that are handled locally. */
6973 process_command (decoded_options_count
, decoded_options
);
6975 /* Initialize the vector of specs to just the default.
6976 This means one element containing 0s, as a terminator. */
6978 compilers
= XNEWVAR (struct compiler
, sizeof default_compilers
);
6979 memcpy (compilers
, default_compilers
, sizeof default_compilers
);
6980 n_compilers
= n_default_compilers
;
6982 /* Read specs from a file if there is one. */
6984 machine_suffix
= concat (spec_host_machine
, dir_separator_str
, spec_version
,
6985 accel_dir_suffix
, dir_separator_str
, NULL
);
6986 just_machine_suffix
= concat (spec_machine
, dir_separator_str
, NULL
);
6988 specs_file
= find_a_file (&startfile_prefixes
, "specs", R_OK
, true);
6989 /* Read the specs file unless it is a default one. */
6990 if (specs_file
!= 0 && strcmp (specs_file
, "specs"))
6991 read_specs (specs_file
, true, false);
6995 #ifndef ACCEL_COMPILER
6996 /* We need to check standard_exec_prefix/just_machine_suffix/specs
6997 for any override of as, ld and libraries. */
6998 specs_file
= (char *) alloca (strlen (standard_exec_prefix
)
6999 + strlen (just_machine_suffix
) + sizeof ("specs"));
7000 strcpy (specs_file
, standard_exec_prefix
);
7001 strcat (specs_file
, just_machine_suffix
);
7002 strcat (specs_file
, "specs");
7003 if (access (specs_file
, R_OK
) == 0)
7004 read_specs (specs_file
, true, false);
7007 /* Process any configure-time defaults specified for the command line
7008 options, via OPTION_DEFAULT_SPECS. */
7009 for (i
= 0; i
< ARRAY_SIZE (option_default_specs
); i
++)
7010 do_option_spec (option_default_specs
[i
].name
,
7011 option_default_specs
[i
].spec
);
7013 /* Process DRIVER_SELF_SPECS, adding any new options to the end
7014 of the command line. */
7016 for (i
= 0; i
< ARRAY_SIZE (driver_self_specs
); i
++)
7017 do_self_spec (driver_self_specs
[i
]);
7019 /* If not cross-compiling, look for executables in the standard
7021 if (*cross_compile
== '0')
7023 if (*md_exec_prefix
)
7025 add_prefix (&exec_prefixes
, md_exec_prefix
, "GCC",
7026 PREFIX_PRIORITY_LAST
, 0, 0);
7030 /* Process sysroot_suffix_spec. */
7031 if (*sysroot_suffix_spec
!= 0
7032 && !no_sysroot_suffix
7033 && do_spec_2 (sysroot_suffix_spec
) == 0)
7035 if (argbuf
.length () > 1)
7036 error ("spec failure: more than one arg to SYSROOT_SUFFIX_SPEC");
7037 else if (argbuf
.length () == 1)
7038 target_sysroot_suffix
= xstrdup (argbuf
.last ());
7041 #ifdef HAVE_LD_SYSROOT
7042 /* Pass the --sysroot option to the linker, if it supports that. If
7043 there is a sysroot_suffix_spec, it has already been processed by
7044 this point, so target_system_root really is the system root we
7046 if (target_system_root
)
7048 obstack_grow (&obstack
, "%(sysroot_spec) ", strlen ("%(sysroot_spec) "));
7049 obstack_grow0 (&obstack
, link_spec
, strlen (link_spec
));
7050 set_spec ("link", XOBFINISH (&obstack
, const char *), false);
7054 /* Process sysroot_hdrs_suffix_spec. */
7055 if (*sysroot_hdrs_suffix_spec
!= 0
7056 && !no_sysroot_suffix
7057 && do_spec_2 (sysroot_hdrs_suffix_spec
) == 0)
7059 if (argbuf
.length () > 1)
7060 error ("spec failure: more than one arg to SYSROOT_HEADERS_SUFFIX_SPEC");
7061 else if (argbuf
.length () == 1)
7062 target_sysroot_hdrs_suffix
= xstrdup (argbuf
.last ());
7065 /* Look for startfiles in the standard places. */
7066 if (*startfile_prefix_spec
!= 0
7067 && do_spec_2 (startfile_prefix_spec
) == 0
7068 && do_spec_1 (" ", 0, NULL
) == 0)
7072 FOR_EACH_VEC_ELT (argbuf
, ndx
, arg
)
7073 add_sysrooted_prefix (&startfile_prefixes
, arg
, "BINUTILS",
7074 PREFIX_PRIORITY_LAST
, 0, 1);
7076 /* We should eventually get rid of all these and stick to
7077 startfile_prefix_spec exclusively. */
7078 else if (*cross_compile
== '0' || target_system_root
)
7080 if (*md_startfile_prefix
)
7081 add_sysrooted_prefix (&startfile_prefixes
, md_startfile_prefix
,
7082 "GCC", PREFIX_PRIORITY_LAST
, 0, 1);
7084 if (*md_startfile_prefix_1
)
7085 add_sysrooted_prefix (&startfile_prefixes
, md_startfile_prefix_1
,
7086 "GCC", PREFIX_PRIORITY_LAST
, 0, 1);
7088 /* If standard_startfile_prefix is relative, base it on
7089 standard_exec_prefix. This lets us move the installed tree
7090 as a unit. If GCC_EXEC_PREFIX is defined, base
7091 standard_startfile_prefix on that as well.
7093 If the prefix is relative, only search it for native compilers;
7094 otherwise we will search a directory containing host libraries. */
7095 if (IS_ABSOLUTE_PATH (standard_startfile_prefix
))
7096 add_sysrooted_prefix (&startfile_prefixes
,
7097 standard_startfile_prefix
, "BINUTILS",
7098 PREFIX_PRIORITY_LAST
, 0, 1);
7099 else if (*cross_compile
== '0')
7101 add_prefix (&startfile_prefixes
,
7102 concat (gcc_exec_prefix
7103 ? gcc_exec_prefix
: standard_exec_prefix
,
7105 standard_startfile_prefix
, NULL
),
7106 NULL
, PREFIX_PRIORITY_LAST
, 0, 1);
7109 /* Sysrooted prefixes are relocated because target_system_root is
7110 also relocated by gcc_exec_prefix. */
7111 if (*standard_startfile_prefix_1
)
7112 add_sysrooted_prefix (&startfile_prefixes
,
7113 standard_startfile_prefix_1
, "BINUTILS",
7114 PREFIX_PRIORITY_LAST
, 0, 1);
7115 if (*standard_startfile_prefix_2
)
7116 add_sysrooted_prefix (&startfile_prefixes
,
7117 standard_startfile_prefix_2
, "BINUTILS",
7118 PREFIX_PRIORITY_LAST
, 0, 1);
7121 /* Process any user specified specs in the order given on the command
7123 for (struct user_specs
*uptr
= user_specs_head
; uptr
; uptr
= uptr
->next
)
7125 char *filename
= find_a_file (&startfile_prefixes
, uptr
->filename
,
7127 read_specs (filename
? filename
: uptr
->filename
, false, true);
7130 /* Process any user self specs. */
7132 struct spec_list
*sl
;
7133 for (sl
= specs
; sl
; sl
= sl
->next
)
7134 if (sl
->name_len
== sizeof "self_spec" - 1
7135 && !strcmp (sl
->name
, "self_spec"))
7136 do_self_spec (*sl
->ptr_spec
);
7141 enum save_temps save
;
7143 if (!compare_debug_second
)
7145 n_switches_debug_check
[1] = n_switches
;
7146 n_switches_alloc_debug_check
[1] = n_switches_alloc
;
7147 switches_debug_check
[1] = XDUPVEC (struct switchstr
, switches
,
7150 do_self_spec ("%:compare-debug-self-opt()");
7151 n_switches_debug_check
[0] = n_switches
;
7152 n_switches_alloc_debug_check
[0] = n_switches_alloc
;
7153 switches_debug_check
[0] = switches
;
7155 n_switches
= n_switches_debug_check
[1];
7156 n_switches_alloc
= n_switches_alloc_debug_check
[1];
7157 switches
= switches_debug_check
[1];
7160 /* Avoid crash when computing %j in this early. */
7161 save
= save_temps_flag
;
7162 save_temps_flag
= SAVE_TEMPS_NONE
;
7164 compare_debug
= -compare_debug
;
7165 do_self_spec ("%:compare-debug-self-opt()");
7167 save_temps_flag
= save
;
7169 if (!compare_debug_second
)
7171 n_switches_debug_check
[1] = n_switches
;
7172 n_switches_alloc_debug_check
[1] = n_switches_alloc
;
7173 switches_debug_check
[1] = switches
;
7174 compare_debug
= -compare_debug
;
7175 n_switches
= n_switches_debug_check
[0];
7176 n_switches_alloc
= n_switches_debug_check
[0];
7177 switches
= switches_debug_check
[0];
7182 /* If we have a GCC_EXEC_PREFIX envvar, modify it for cpp's sake. */
7183 if (gcc_exec_prefix
)
7184 gcc_exec_prefix
= concat (gcc_exec_prefix
, spec_host_machine
,
7185 dir_separator_str
, spec_version
,
7186 accel_dir_suffix
, dir_separator_str
, NULL
);
7188 /* Now we have the specs.
7189 Set the `valid' bits for switches that match anything in any spec. */
7191 validate_all_switches ();
7193 /* Now that we have the switches and the specs, set
7194 the subdirectory based on the options. */
7195 set_multilib_dir ();
7198 /* Set up to remember the pathname of gcc and any options
7199 needed for collect. We use argv[0] instead of progname because
7200 we need the complete pathname. */
7203 driver::putenv_COLLECT_GCC (const char *argv0
) const
7205 obstack_init (&collect_obstack
);
7206 obstack_grow (&collect_obstack
, "COLLECT_GCC=", sizeof ("COLLECT_GCC=") - 1);
7207 obstack_grow (&collect_obstack
, argv0
, strlen (argv0
) + 1);
7208 xputenv (XOBFINISH (&collect_obstack
, char *));
7210 if (strlen (OFFLOAD_TARGETS
) > 0)
7212 obstack_init (&collect_obstack
);
7213 obstack_grow (&collect_obstack
, "OFFLOAD_TARGET_NAMES=",
7214 sizeof ("OFFLOAD_TARGET_NAMES=") - 1);
7215 obstack_grow (&collect_obstack
, OFFLOAD_TARGETS
,
7216 strlen (OFFLOAD_TARGETS
) + 1);
7217 xputenv (XOBFINISH (&collect_obstack
, char *));
7221 /* Set up to remember the pathname of the lto wrapper. */
7224 driver::maybe_putenv_COLLECT_LTO_WRAPPER () const
7226 char *lto_wrapper_file
;
7229 lto_wrapper_file
= NULL
;
7231 lto_wrapper_file
= find_a_file (&exec_prefixes
, "lto-wrapper",
7233 if (lto_wrapper_file
)
7235 lto_wrapper_file
= convert_white_space (lto_wrapper_file
);
7236 lto_wrapper_spec
= lto_wrapper_file
;
7237 obstack_init (&collect_obstack
);
7238 obstack_grow (&collect_obstack
, "COLLECT_LTO_WRAPPER=",
7239 sizeof ("COLLECT_LTO_WRAPPER=") - 1);
7240 obstack_grow (&collect_obstack
, lto_wrapper_spec
,
7241 strlen (lto_wrapper_spec
) + 1);
7242 xputenv (XOBFINISH (&collect_obstack
, char *));
7247 /* Reject switches that no pass was interested in. */
7250 driver::handle_unrecognized_options () const
7252 for (size_t i
= 0; (int) i
< n_switches
; i
++)
7253 if (! switches
[i
].validated
)
7254 error ("unrecognized command line option %<-%s%>", switches
[i
].part1
);
7257 /* Handle the various -print-* options, returning 0 if the driver
7258 should exit, or nonzero if the driver should continue. */
7261 driver::maybe_print_and_exit () const
7263 if (print_search_dirs
)
7265 printf (_("install: %s%s\n"),
7266 gcc_exec_prefix
? gcc_exec_prefix
: standard_exec_prefix
,
7267 gcc_exec_prefix
? "" : machine_suffix
);
7268 printf (_("programs: %s\n"),
7269 build_search_list (&exec_prefixes
, "", false, false));
7270 printf (_("libraries: %s\n"),
7271 build_search_list (&startfile_prefixes
, "", false, true));
7275 if (print_file_name
)
7277 printf ("%s\n", find_file (print_file_name
));
7281 if (print_prog_name
)
7283 if (use_ld
!= NULL
&& ! strcmp (print_prog_name
, "ld"))
7285 /* Append USE_LD to to the default linker. */
7286 #ifdef DEFAULT_LINKER
7288 # ifdef HAVE_HOST_EXECUTABLE_SUFFIX
7289 int len
= (sizeof (DEFAULT_LINKER
)
7290 - sizeof (HOST_EXECUTABLE_SUFFIX
));
7294 char *default_linker
= xstrdup (DEFAULT_LINKER
);
7295 /* Strip HOST_EXECUTABLE_SUFFIX if DEFAULT_LINKER contains
7296 HOST_EXECUTABLE_SUFFIX. */
7297 if (! strcmp (&default_linker
[len
], HOST_EXECUTABLE_SUFFIX
))
7299 default_linker
[len
] = '\0';
7300 ld
= concat (default_linker
, use_ld
,
7301 HOST_EXECUTABLE_SUFFIX
, NULL
);
7306 ld
= concat (DEFAULT_LINKER
, use_ld
, NULL
);
7307 if (access (ld
, X_OK
) == 0)
7309 printf ("%s\n", ld
);
7313 print_prog_name
= concat (print_prog_name
, use_ld
, NULL
);
7315 char *newname
= find_a_file (&exec_prefixes
, print_prog_name
, X_OK
, 0);
7316 printf ("%s\n", (newname
? newname
: print_prog_name
));
7320 if (print_multi_lib
)
7322 print_multilib_info ();
7326 if (print_multi_directory
)
7328 if (multilib_dir
== NULL
)
7331 printf ("%s\n", multilib_dir
);
7335 if (print_multiarch
)
7337 if (multiarch_dir
== NULL
)
7340 printf ("%s\n", multiarch_dir
);
7346 if (target_system_root
)
7348 if (target_sysroot_suffix
)
7349 printf ("%s%s\n", target_system_root
, target_sysroot_suffix
);
7351 printf ("%s\n", target_system_root
);
7356 if (print_multi_os_directory
)
7358 if (multilib_os_dir
== NULL
)
7361 printf ("%s\n", multilib_os_dir
);
7365 if (print_sysroot_headers_suffix
)
7367 if (*sysroot_hdrs_suffix_spec
)
7369 printf("%s\n", (target_sysroot_hdrs_suffix
7370 ? target_sysroot_hdrs_suffix
7375 /* The error status indicates that only one set of fixed
7376 headers should be built. */
7377 fatal_error ("not configured with sysroot headers suffix");
7380 if (print_help_list
)
7386 printf (_("\nFor bug reporting instructions, please see:\n"));
7387 printf ("%s.\n", bug_report_url
);
7392 /* We do not exit here. Instead we have created a fake input file
7393 called 'help-dummy' which needs to be compiled, and we pass this
7394 on the various sub-processes, along with the --help switch.
7395 Ensure their output appears after ours. */
7396 fputc ('\n', stdout
);
7402 printf (_("%s %s%s\n"), progname
, pkgversion_string
,
7404 printf ("Copyright %s 2014 Free Software Foundation, Inc.\n",
7406 fputs (_("This is free software; see the source for copying conditions. There is NO\n\
7407 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\n"),
7412 /* We do not exit here. We use the same mechanism of --help to print
7413 the version of the sub-processes. */
7414 fputc ('\n', stdout
);
7420 print_configuration (stderr
);
7428 /* Figure out what to do with each input file.
7429 Return true if we need to exit early from "main", false otherwise. */
7432 driver::prepare_infiles ()
7435 int lang_n_infiles
= 0;
7437 if (n_infiles
== added_libraries
)
7438 fatal_error ("no input files");
7441 /* Early exit needed from main. */
7444 /* Make a place to record the compiler output file names
7445 that correspond to the input files. */
7448 i
+= lang_specific_extra_outfiles
;
7449 outfiles
= XCNEWVEC (const char *, i
);
7451 /* Record which files were specified explicitly as link input. */
7453 explicit_link_files
= XCNEWVEC (char, n_infiles
);
7455 combine_inputs
= have_o
|| flag_wpa
;
7457 for (i
= 0; (int) i
< n_infiles
; i
++)
7459 const char *name
= infiles
[i
].name
;
7460 struct compiler
*compiler
= lookup_compiler (name
,
7462 infiles
[i
].language
);
7464 if (compiler
&& !(compiler
->combinable
))
7465 combine_inputs
= false;
7467 if (lang_n_infiles
> 0 && compiler
!= input_file_compiler
7468 && infiles
[i
].language
&& infiles
[i
].language
[0] != '*')
7469 infiles
[i
].incompiler
= compiler
;
7473 input_file_compiler
= compiler
;
7474 infiles
[i
].incompiler
= compiler
;
7478 /* Since there is no compiler for this input file, assume it is a
7480 explicit_link_files
[i
] = 1;
7481 infiles
[i
].incompiler
= NULL
;
7483 infiles
[i
].compiled
= false;
7484 infiles
[i
].preprocessed
= false;
7487 if (!combine_inputs
&& have_c
&& have_o
&& lang_n_infiles
> 1)
7488 fatal_error ("cannot specify -o with -c, -S or -E with multiple files");
7490 /* No early exit needed from main; we can continue. */
7494 /* Run the spec machinery on each input file. */
7497 driver::do_spec_on_infiles () const
7501 for (i
= 0; (int) i
< n_infiles
; i
++)
7503 int this_file_error
= 0;
7505 /* Tell do_spec what to substitute for %i. */
7507 input_file_number
= i
;
7508 set_input (infiles
[i
].name
);
7510 if (infiles
[i
].compiled
)
7513 /* Use the same thing in %o, unless cp->spec says otherwise. */
7515 outfiles
[i
] = gcc_input_filename
;
7517 /* Figure out which compiler from the file's suffix. */
7520 = lookup_compiler (infiles
[i
].name
, input_filename_length
,
7521 infiles
[i
].language
);
7523 if (input_file_compiler
)
7525 /* Ok, we found an applicable compiler. Run its spec. */
7527 if (input_file_compiler
->spec
[0] == '#')
7529 error ("%s: %s compiler not installed on this system",
7530 gcc_input_filename
, &input_file_compiler
->spec
[1]);
7531 this_file_error
= 1;
7539 free (debug_check_temp_file
[0]);
7540 debug_check_temp_file
[0] = NULL
;
7542 free (debug_check_temp_file
[1]);
7543 debug_check_temp_file
[1] = NULL
;
7546 value
= do_spec (input_file_compiler
->spec
);
7547 infiles
[i
].compiled
= true;
7549 this_file_error
= 1;
7550 else if (compare_debug
&& debug_check_temp_file
[0])
7553 inform (0, "recompiling with -fcompare-debug");
7555 compare_debug
= -compare_debug
;
7556 n_switches
= n_switches_debug_check
[1];
7557 n_switches_alloc
= n_switches_alloc_debug_check
[1];
7558 switches
= switches_debug_check
[1];
7560 value
= do_spec (input_file_compiler
->spec
);
7562 compare_debug
= -compare_debug
;
7563 n_switches
= n_switches_debug_check
[0];
7564 n_switches_alloc
= n_switches_alloc_debug_check
[0];
7565 switches
= switches_debug_check
[0];
7569 error ("during -fcompare-debug recompilation");
7570 this_file_error
= 1;
7573 gcc_assert (debug_check_temp_file
[1]
7574 && filename_cmp (debug_check_temp_file
[0],
7575 debug_check_temp_file
[1]));
7578 inform (0, "comparing final insns dumps");
7580 if (compare_files (debug_check_temp_file
))
7581 this_file_error
= 1;
7586 free (debug_check_temp_file
[0]);
7587 debug_check_temp_file
[0] = NULL
;
7589 free (debug_check_temp_file
[1]);
7590 debug_check_temp_file
[1] = NULL
;
7595 /* If this file's name does not contain a recognized suffix,
7596 record it as explicit linker input. */
7599 explicit_link_files
[i
] = 1;
7601 /* Clear the delete-on-failure queue, deleting the files in it
7602 if this compilation failed. */
7604 if (this_file_error
)
7606 delete_failure_queue ();
7609 /* If this compilation succeeded, don't delete those files later. */
7610 clear_failure_queue ();
7613 /* Reset the input file name to the first compile/object file name, for use
7614 with %b in LINK_SPEC. We use the first input file that we can find
7615 a compiler to compile it instead of using infiles.language since for
7616 languages other than C we use aliases that we then lookup later. */
7621 for (i
= 0; i
< n_infiles
; i
++)
7622 if (infiles
[i
].incompiler
7623 || (infiles
[i
].language
&& infiles
[i
].language
[0] != '*'))
7625 set_input (infiles
[i
].name
);
7632 /* Make sure INPUT_FILE_NUMBER points to first available open
7634 input_file_number
= n_infiles
;
7635 if (lang_specific_pre_link ())
7640 /* If we have to run the linker, do it now. */
7643 driver::maybe_run_linker (const char *argv0
) const
7646 int linker_was_run
= 0;
7647 int num_linker_inputs
;
7649 /* Determine if there are any linker input files. */
7650 num_linker_inputs
= 0;
7651 for (i
= 0; (int) i
< n_infiles
; i
++)
7652 if (explicit_link_files
[i
] || outfiles
[i
] != NULL
)
7653 num_linker_inputs
++;
7655 /* Run ld to link all the compiler output files. */
7657 if (num_linker_inputs
> 0 && !seen_error () && print_subprocess_help
< 2)
7659 int tmp
= execution_count
;
7663 #if HAVE_LTO_PLUGIN > 0
7664 #if HAVE_LTO_PLUGIN == 2
7665 const char *fno_use_linker_plugin
= "fno-use-linker-plugin";
7667 const char *fuse_linker_plugin
= "fuse-linker-plugin";
7671 /* We'll use ld if we can't find collect2. */
7672 if (! strcmp (linker_name_spec
, "collect2"))
7674 char *s
= find_a_file (&exec_prefixes
, "collect2", X_OK
, false);
7676 linker_name_spec
= "ld";
7679 #if HAVE_LTO_PLUGIN > 0
7680 #if HAVE_LTO_PLUGIN == 2
7681 if (!switch_matches (fno_use_linker_plugin
,
7682 fno_use_linker_plugin
7683 + strlen (fno_use_linker_plugin
), 0))
7685 if (switch_matches (fuse_linker_plugin
,
7687 + strlen (fuse_linker_plugin
), 0))
7690 char *temp_spec
= find_a_file (&exec_prefixes
,
7691 LTOPLUGINSONAME
, R_OK
,
7694 fatal_error ("-fuse-linker-plugin, but %s not found",
7696 linker_plugin_file_spec
= convert_white_space (temp_spec
);
7699 lto_gcc_spec
= argv0
;
7702 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
7704 putenv_from_prefixes (&exec_prefixes
, "COMPILER_PATH", false);
7705 putenv_from_prefixes (&startfile_prefixes
, LIBRARY_PATH_ENV
, true);
7707 if (print_subprocess_help
== 1)
7709 printf (_("\nLinker options\n==============\n\n"));
7710 printf (_("Use \"-Wl,OPTION\" to pass \"OPTION\""
7711 " to the linker.\n\n"));
7714 int value
= do_spec (link_command_spec
);
7717 linker_was_run
= (tmp
!= execution_count
);
7720 /* If options said don't run linker,
7721 complain about input files to be given to the linker. */
7723 if (! linker_was_run
&& !seen_error ())
7724 for (i
= 0; (int) i
< n_infiles
; i
++)
7725 if (explicit_link_files
[i
]
7726 && !(infiles
[i
].language
&& infiles
[i
].language
[0] == '*'))
7727 warning (0, "%s: linker input file unused because linking not done",
7731 /* The end of "main". */
7734 driver::final_actions () const
7736 /* Delete some or all of the temporary files we made. */
7739 delete_failure_queue ();
7740 delete_temp_files ();
7742 if (print_help_list
)
7744 printf (("\nFor bug reporting instructions, please see:\n"));
7745 printf ("%s\n", bug_report_url
);
7749 /* Determine what the exit code of the driver should be. */
7752 driver::get_exit_code () const
7754 return (signal_count
!= 0 ? 2
7755 : seen_error () ? (pass_exit_codes
? greatest_status
: 1)
7759 /* Find the proper compilation spec for the file name NAME,
7760 whose length is LENGTH. LANGUAGE is the specified language,
7761 or 0 if this file is to be passed to the linker. */
7763 static struct compiler
*
7764 lookup_compiler (const char *name
, size_t length
, const char *language
)
7766 struct compiler
*cp
;
7768 /* If this was specified by the user to be a linker input, indicate that. */
7769 if (language
!= 0 && language
[0] == '*')
7772 /* Otherwise, look for the language, if one is spec'd. */
7775 for (cp
= compilers
+ n_compilers
- 1; cp
>= compilers
; cp
--)
7776 if (cp
->suffix
[0] == '@' && !strcmp (cp
->suffix
+ 1, language
))
7779 error ("language %s not recognized", language
);
7783 /* Look for a suffix. */
7784 for (cp
= compilers
+ n_compilers
- 1; cp
>= compilers
; cp
--)
7786 if (/* The suffix `-' matches only the file name `-'. */
7787 (!strcmp (cp
->suffix
, "-") && !strcmp (name
, "-"))
7788 || (strlen (cp
->suffix
) < length
7789 /* See if the suffix matches the end of NAME. */
7790 && !strcmp (cp
->suffix
,
7791 name
+ length
- strlen (cp
->suffix
))
7796 #if defined (OS2) ||defined (HAVE_DOS_BASED_FILE_SYSTEM)
7797 /* Look again, but case-insensitively this time. */
7799 for (cp
= compilers
+ n_compilers
- 1; cp
>= compilers
; cp
--)
7801 if (/* The suffix `-' matches only the file name `-'. */
7802 (!strcmp (cp
->suffix
, "-") && !strcmp (name
, "-"))
7803 || (strlen (cp
->suffix
) < length
7804 /* See if the suffix matches the end of NAME. */
7805 && ((!strcmp (cp
->suffix
,
7806 name
+ length
- strlen (cp
->suffix
))
7807 || !strpbrk (cp
->suffix
, "ABCDEFGHIJKLMNOPQRSTUVWXYZ"))
7808 && !strcasecmp (cp
->suffix
,
7809 name
+ length
- strlen (cp
->suffix
)))
7815 if (cp
>= compilers
)
7817 if (cp
->spec
[0] != '@')
7818 /* A non-alias entry: return it. */
7821 /* An alias entry maps a suffix to a language.
7822 Search for the language; pass 0 for NAME and LENGTH
7823 to avoid infinite recursion if language not found. */
7824 return lookup_compiler (NULL
, 0, cp
->spec
+ 1);
7830 save_string (const char *s
, int len
)
7832 char *result
= XNEWVEC (char, len
+ 1);
7834 memcpy (result
, s
, len
);
7840 pfatal_with_name (const char *name
)
7842 perror_with_name (name
);
7843 delete_temp_files ();
7848 perror_with_name (const char *name
)
7850 error ("%s: %m", name
);
7854 validate_switches_from_spec (const char *spec
, bool user
)
7856 const char *p
= spec
;
7859 if (c
== '%' && (*p
== '{' || *p
== '<' || (*p
== 'W' && *++p
== '{')))
7860 /* We have a switch spec. */
7861 p
= validate_switches (p
+ 1, user
);
7865 validate_all_switches (void)
7867 struct compiler
*comp
;
7868 struct spec_list
*spec
;
7870 for (comp
= compilers
; comp
->spec
; comp
++)
7871 validate_switches_from_spec (comp
->spec
, false);
7873 /* Look through the linked list of specs read from the specs file. */
7874 for (spec
= specs
; spec
; spec
= spec
->next
)
7875 validate_switches_from_spec (*spec
->ptr_spec
, spec
->user_p
);
7877 validate_switches_from_spec (link_command_spec
, false);
7880 /* Look at the switch-name that comes after START
7881 and mark as valid all supplied switches that match it. */
7884 validate_switches (const char *start
, bool user_spec
)
7886 const char *p
= start
;
7890 bool suffix
= false;
7891 bool starred
= false;
7893 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
7902 if (*p
== '.' || *p
== ',')
7906 while (ISIDNUM (*p
) || *p
== '-' || *p
== '+' || *p
== '='
7907 || *p
== ',' || *p
== '.' || *p
== '@')
7912 starred
= true, p
++;
7918 /* Mark all matching switches as valid. */
7919 for (i
= 0; i
< n_switches
; i
++)
7920 if (!strncmp (switches
[i
].part1
, atom
, len
)
7921 && (starred
|| switches
[i
].part1
[len
] == '\0')
7922 && (switches
[i
].known
|| user_spec
))
7923 switches
[i
].validated
= true;
7927 if (*p
&& (p
[-1] == '|' || p
[-1] == '&'))
7930 if (*p
&& p
[-1] == ':')
7932 while (*p
&& *p
!= ';' && *p
!= '}')
7937 if (*p
== '{' || *p
== '<')
7938 p
= validate_switches (p
+1, user_spec
);
7939 else if (p
[0] == 'W' && p
[1] == '{')
7940 p
= validate_switches (p
+2, user_spec
);
7947 if (*p
&& p
[-1] == ';')
7961 static struct mdswitchstr
*mdswitches
;
7962 static int n_mdswitches
;
7964 /* Check whether a particular argument was used. The first time we
7965 canonicalize the switches to keep only the ones we care about. */
7968 used_arg (const char *p
, int len
)
7973 const char *replace
;
7978 static struct mswitchstr
*mswitches
;
7979 static int n_mswitches
;
7984 struct mswitchstr
*matches
;
7988 /* Break multilib_matches into the component strings of string
7989 and replacement string. */
7990 for (q
= multilib_matches
; *q
!= '\0'; q
++)
7995 = (struct mswitchstr
*) alloca ((sizeof (struct mswitchstr
)) * cnt
);
7997 q
= multilib_matches
;
8006 fatal_error ("multilib spec %qs is invalid",
8011 matches
[i
].len
= q
- matches
[i
].str
;
8013 matches
[i
].replace
= ++q
;
8014 while (*q
!= ';' && *q
!= '\0')
8017 goto invalid_matches
;
8020 matches
[i
].rep_len
= q
- matches
[i
].replace
;
8026 /* Now build a list of the replacement string for switches that we care
8027 about. Make sure we allocate at least one entry. This prevents
8028 xmalloc from calling fatal, and prevents us from re-executing this
8031 = XNEWVEC (struct mswitchstr
, n_mdswitches
+ (n_switches
? n_switches
: 1));
8032 for (i
= 0; i
< n_switches
; i
++)
8033 if ((switches
[i
].live_cond
& SWITCH_IGNORE
) == 0)
8035 int xlen
= strlen (switches
[i
].part1
);
8036 for (j
= 0; j
< cnt
; j
++)
8037 if (xlen
== matches
[j
].len
8038 && ! strncmp (switches
[i
].part1
, matches
[j
].str
, xlen
))
8040 mswitches
[n_mswitches
].str
= matches
[j
].replace
;
8041 mswitches
[n_mswitches
].len
= matches
[j
].rep_len
;
8042 mswitches
[n_mswitches
].replace
= (char *) 0;
8043 mswitches
[n_mswitches
].rep_len
= 0;
8049 /* Add MULTILIB_DEFAULTS switches too, as long as they were not present
8050 on the command line nor any options mutually incompatible with
8052 for (i
= 0; i
< n_mdswitches
; i
++)
8056 for (q
= multilib_options
; *q
!= '\0'; *q
&& q
++)
8062 while (strncmp (q
, mdswitches
[i
].str
, mdswitches
[i
].len
) != 0
8063 || strchr (" /", q
[mdswitches
[i
].len
]) == NULL
)
8065 while (*q
!= ' ' && *q
!= '/' && *q
!= '\0')
8072 if (*q
!= ' ' && *q
!= '\0')
8074 while (*r
!= ' ' && *r
!= '\0')
8077 while (*q
!= ' ' && *q
!= '/' && *q
!= '\0')
8080 if (used_arg (r
, q
- r
))
8085 mswitches
[n_mswitches
].str
= mdswitches
[i
].str
;
8086 mswitches
[n_mswitches
].len
= mdswitches
[i
].len
;
8087 mswitches
[n_mswitches
].replace
= (char *) 0;
8088 mswitches
[n_mswitches
].rep_len
= 0;
8101 for (i
= 0; i
< n_mswitches
; i
++)
8102 if (len
== mswitches
[i
].len
&& ! strncmp (p
, mswitches
[i
].str
, len
))
8109 default_arg (const char *p
, int len
)
8113 for (i
= 0; i
< n_mdswitches
; i
++)
8114 if (len
== mdswitches
[i
].len
&& ! strncmp (p
, mdswitches
[i
].str
, len
))
8120 /* Work out the subdirectory to use based on the options. The format of
8121 multilib_select is a list of elements. Each element is a subdirectory
8122 name followed by a list of options followed by a semicolon. The format
8123 of multilib_exclusions is the same, but without the preceding
8124 directory. First gcc will check the exclusions, if none of the options
8125 beginning with an exclamation point are present, and all of the other
8126 options are present, then we will ignore this completely. Passing
8127 that, gcc will consider each multilib_select in turn using the same
8128 rules for matching the options. If a match is found, that subdirectory
8130 A subdirectory name is optionally followed by a colon and the corresponding
8134 set_multilib_dir (void)
8137 unsigned int this_path_len
;
8138 const char *this_path
, *this_arg
;
8139 const char *start
, *end
;
8141 int ok
, ndfltok
, first
;
8144 start
= multilib_defaults
;
8145 while (*start
== ' ' || *start
== '\t')
8147 while (*start
!= '\0')
8150 while (*start
!= ' ' && *start
!= '\t' && *start
!= '\0')
8152 while (*start
== ' ' || *start
== '\t')
8160 mdswitches
= XNEWVEC (struct mdswitchstr
, n_mdswitches
);
8161 for (start
= multilib_defaults
; *start
!= '\0'; start
= end
+ 1)
8163 while (*start
== ' ' || *start
== '\t')
8169 for (end
= start
+ 1;
8170 *end
!= ' ' && *end
!= '\t' && *end
!= '\0'; end
++)
8173 obstack_grow (&multilib_obstack
, start
, end
- start
);
8174 obstack_1grow (&multilib_obstack
, 0);
8175 mdswitches
[i
].str
= XOBFINISH (&multilib_obstack
, const char *);
8176 mdswitches
[i
++].len
= end
- start
;
8183 p
= multilib_exclusions
;
8186 /* Ignore newlines. */
8193 /* Check the arguments. */
8200 fatal_error ("multilib exclusions %qs is invalid",
8201 multilib_exclusions
);
8211 while (*p
!= ' ' && *p
!= ';')
8214 goto invalid_exclusions
;
8218 if (*this_arg
!= '!')
8226 ok
= used_arg (this_arg
, p
- this_arg
);
8241 p
= multilib_select
;
8243 /* Append multilib reuse rules if any. With those rules, we can reuse
8244 one multilib for certain different options sets. */
8245 if (strlen (multilib_reuse
) > 0)
8246 p
= concat (p
, multilib_reuse
, NULL
);
8250 /* Ignore newlines. */
8257 /* Get the initial path. */
8264 fatal_error ("multilib select %qs %qs is invalid",
8265 multilib_select
, multilib_reuse
);
8269 this_path_len
= p
- this_path
;
8271 /* Check the arguments. */
8278 goto invalid_select
;
8287 while (*p
!= ' ' && *p
!= ';')
8290 goto invalid_select
;
8294 if (*this_arg
!= '!')
8302 /* If this is a default argument, we can just ignore it.
8303 This is true even if this_arg begins with '!'. Beginning
8304 with '!' does not mean that this argument is necessarily
8305 inappropriate for this library: it merely means that
8306 there is a more specific library which uses this
8307 argument. If this argument is a default, we need not
8308 consider that more specific library. */
8309 ok
= used_arg (this_arg
, p
- this_arg
);
8316 if (default_arg (this_arg
, p
- this_arg
))
8325 if (this_path_len
!= 1
8326 || this_path
[0] != '.')
8328 char *new_multilib_dir
= XNEWVEC (char, this_path_len
+ 1);
8331 strncpy (new_multilib_dir
, this_path
, this_path_len
);
8332 new_multilib_dir
[this_path_len
] = '\0';
8333 q
= strchr (new_multilib_dir
, ':');
8336 multilib_dir
= new_multilib_dir
;
8343 const char *q
= this_path
, *end
= this_path
+ this_path_len
;
8345 while (q
< end
&& *q
!= ':')
8349 const char *q2
= q
+ 1, *ml_end
= end
;
8350 char *new_multilib_os_dir
;
8352 while (q2
< end
&& *q2
!= ':')
8356 if (ml_end
- q
== 1)
8357 multilib_os_dir
= xstrdup (".");
8360 new_multilib_os_dir
= XNEWVEC (char, ml_end
- q
);
8361 memcpy (new_multilib_os_dir
, q
+ 1, ml_end
- q
- 1);
8362 new_multilib_os_dir
[ml_end
- q
- 1] = '\0';
8363 multilib_os_dir
= new_multilib_os_dir
;
8366 if (q2
< end
&& *q2
== ':')
8368 char *new_multiarch_dir
= XNEWVEC (char, end
- q2
);
8369 memcpy (new_multiarch_dir
, q2
+ 1, end
- q2
- 1);
8370 new_multiarch_dir
[end
- q2
- 1] = '\0';
8371 multiarch_dir
= new_multiarch_dir
;
8380 if (multilib_dir
== NULL
&& multilib_os_dir
!= NULL
8381 && strcmp (multilib_os_dir
, ".") == 0)
8383 free (CONST_CAST (char *, multilib_os_dir
));
8384 multilib_os_dir
= NULL
;
8386 else if (multilib_dir
!= NULL
&& multilib_os_dir
== NULL
)
8387 multilib_os_dir
= multilib_dir
;
8390 /* Print out the multiple library subdirectory selection
8391 information. This prints out a series of lines. Each line looks
8392 like SUBDIRECTORY;@OPTION@OPTION, with as many options as is
8393 required. Only the desired options are printed out, the negative
8394 matches. The options are print without a leading dash. There are
8395 no spaces to make it easy to use the information in the shell.
8396 Each subdirectory is printed only once. This assumes the ordering
8397 generated by the genmultilib script. Also, we leave out ones that match
8401 print_multilib_info (void)
8403 const char *p
= multilib_select
;
8404 const char *last_path
= 0, *this_path
;
8406 unsigned int last_path_len
= 0;
8411 /* Ignore newlines. */
8418 /* Get the initial path. */
8425 fatal_error ("multilib select %qs is invalid", multilib_select
);
8431 /* When --disable-multilib was used but target defines
8432 MULTILIB_OSDIRNAMES, entries starting with .: (and not starting
8433 with .:: for multiarch configurations) are there just to find
8434 multilib_os_dir, so skip them from output. */
8435 if (this_path
[0] == '.' && this_path
[1] == ':' && this_path
[2] != ':')
8438 /* Check for matches with the multilib_exclusions. We don't bother
8439 with the '!' in either list. If any of the exclusion rules match
8440 all of its options with the select rule, we skip it. */
8442 const char *e
= multilib_exclusions
;
8443 const char *this_arg
;
8448 /* Ignore newlines. */
8455 /* Check the arguments. */
8464 fatal_error ("multilib exclusion %qs is invalid",
8465 multilib_exclusions
);
8476 while (*e
!= ' ' && *e
!= ';')
8479 goto invalid_exclusion
;
8487 int len
= e
- this_arg
;
8490 goto invalid_select
;
8494 while (*q
!= ' ' && *q
!= ';')
8497 goto invalid_select
;
8501 if (! strncmp (arg
, this_arg
,
8502 (len
< q
- arg
) ? q
- arg
: len
)
8503 || default_arg (this_arg
, e
- this_arg
))
8533 /* If this is a duplicate, skip it. */
8534 skip
= (last_path
!= 0
8535 && (unsigned int) (p
- this_path
) == last_path_len
8536 && ! filename_ncmp (last_path
, this_path
, last_path_len
));
8538 last_path
= this_path
;
8539 last_path_len
= p
- this_path
;
8542 /* If this directory requires any default arguments, we can skip
8543 it. We will already have printed a directory identical to
8544 this one which does not require that default argument. */
8555 goto invalid_select
;
8562 while (*q
!= ' ' && *q
!= ';')
8565 goto invalid_select
;
8570 && default_arg (arg
, q
- arg
))
8585 for (p1
= last_path
; p1
< p
&& *p1
!= ':'; p1
++)
8596 goto invalid_select
;
8604 use_arg
= *p
!= '!';
8609 while (*p
!= ' ' && *p
!= ';')
8612 goto invalid_select
;
8624 /* If there are extra options, print them now. */
8625 if (multilib_extra
&& *multilib_extra
)
8627 int print_at
= TRUE
;
8630 for (q
= multilib_extra
; *q
!= '\0'; q
++)
8651 /* getenv built-in spec function.
8653 Returns the value of the environment variable given by its first
8654 argument, concatenated with the second argument. If the
8655 environment variable is not defined, a fatal error is issued. */
8658 getenv_spec_function (int argc
, const char **argv
)
8668 value
= getenv (argv
[0]);
8670 fatal_error ("environment variable %qs not defined", argv
[0]);
8672 /* We have to escape every character of the environment variable so
8673 they are not interpreted as active spec characters. A
8674 particularly painful case is when we are reading a variable
8675 holding a windows path complete with \ separators. */
8676 len
= strlen (value
) * 2 + strlen (argv
[1]) + 1;
8677 result
= XNEWVAR (char, len
);
8678 for (ptr
= result
; *value
; ptr
+= 2)
8684 strcpy (ptr
, argv
[1]);
8689 /* if-exists built-in spec function.
8691 Checks to see if the file specified by the absolute pathname in
8692 ARGS exists. Returns that pathname if found.
8694 The usual use for this function is to check for a library file
8695 (whose name has been expanded with %s). */
8698 if_exists_spec_function (int argc
, const char **argv
)
8700 /* Must have only one argument. */
8701 if (argc
== 1 && IS_ABSOLUTE_PATH (argv
[0]) && ! access (argv
[0], R_OK
))
8707 /* if-exists-else built-in spec function.
8709 This is like if-exists, but takes an additional argument which
8710 is returned if the first argument does not exist. */
8713 if_exists_else_spec_function (int argc
, const char **argv
)
8715 /* Must have exactly two arguments. */
8719 if (IS_ABSOLUTE_PATH (argv
[0]) && ! access (argv
[0], R_OK
))
8725 /* sanitize built-in spec function.
8727 This returns non-NULL, if sanitizing address, thread or
8728 any of the undefined behavior sanitizers. */
8731 sanitize_spec_function (int argc
, const char **argv
)
8736 if (strcmp (argv
[0], "address") == 0)
8737 return (flag_sanitize
& SANITIZE_USER_ADDRESS
) ? "" : NULL
;
8738 if (strcmp (argv
[0], "kernel-address") == 0)
8739 return (flag_sanitize
& SANITIZE_KERNEL_ADDRESS
) ? "" : NULL
;
8740 if (strcmp (argv
[0], "thread") == 0)
8741 return (flag_sanitize
& SANITIZE_THREAD
) ? "" : NULL
;
8742 if (strcmp (argv
[0], "undefined") == 0)
8743 return ((flag_sanitize
& (SANITIZE_UNDEFINED
| SANITIZE_NONDEFAULT
))
8744 && !flag_sanitize_undefined_trap_on_error
) ? "" : NULL
;
8745 if (strcmp (argv
[0], "leak") == 0)
8746 return ((flag_sanitize
8747 & (SANITIZE_ADDRESS
| SANITIZE_LEAK
| SANITIZE_THREAD
))
8748 == SANITIZE_LEAK
) ? "" : NULL
;
8752 /* replace-outfile built-in spec function.
8754 This looks for the first argument in the outfiles array's name and
8755 replaces it with the second argument. */
8758 replace_outfile_spec_function (int argc
, const char **argv
)
8761 /* Must have exactly two arguments. */
8765 for (i
= 0; i
< n_infiles
; i
++)
8767 if (outfiles
[i
] && !filename_cmp (outfiles
[i
], argv
[0]))
8768 outfiles
[i
] = xstrdup (argv
[1]);
8773 /* remove-outfile built-in spec function.
8775 * This looks for the first argument in the outfiles array's name and
8779 remove_outfile_spec_function (int argc
, const char **argv
)
8782 /* Must have exactly one argument. */
8786 for (i
= 0; i
< n_infiles
; i
++)
8788 if (outfiles
[i
] && !filename_cmp (outfiles
[i
], argv
[0]))
8794 /* Given two version numbers, compares the two numbers.
8795 A version number must match the regular expression
8796 ([1-9][0-9]*|0)(\.([1-9][0-9]*|0))*
8799 compare_version_strings (const char *v1
, const char *v2
)
8804 if (regcomp (&r
, "^([1-9][0-9]*|0)(\\.([1-9][0-9]*|0))*$",
8805 REG_EXTENDED
| REG_NOSUB
) != 0)
8807 rresult
= regexec (&r
, v1
, 0, NULL
, 0);
8808 if (rresult
== REG_NOMATCH
)
8809 fatal_error ("invalid version number %qs", v1
);
8810 else if (rresult
!= 0)
8812 rresult
= regexec (&r
, v2
, 0, NULL
, 0);
8813 if (rresult
== REG_NOMATCH
)
8814 fatal_error ("invalid version number %qs", v2
);
8815 else if (rresult
!= 0)
8818 return strverscmp (v1
, v2
);
8822 /* version_compare built-in spec function.
8824 This takes an argument of the following form:
8826 <comparison-op> <arg1> [<arg2>] <switch> <result>
8828 and produces "result" if the comparison evaluates to true,
8829 and nothing if it doesn't.
8831 The supported <comparison-op> values are:
8833 >= true if switch is a later (or same) version than arg1
8835 < true if switch is an earlier version than arg1
8837 >< true if switch is arg1 or later, and earlier than arg2
8838 <> true if switch is earlier than arg1 or is arg2 or later
8840 If the switch is not present, the condition is false unless
8841 the first character of the <comparison-op> is '!'.
8844 %:version-compare(>= 10.3 mmacosx-version-min= -lmx)
8845 adds -lmx if -mmacosx-version-min=10.3.9 was passed. */
8848 version_compare_spec_function (int argc
, const char **argv
)
8852 const char *switch_value
= NULL
;
8857 fatal_error ("too few arguments to %%:version-compare");
8858 if (argv
[0][0] == '\0')
8860 if ((argv
[0][1] == '<' || argv
[0][1] == '>') && argv
[0][0] != '!')
8862 if (argc
!= nargs
+ 3)
8863 fatal_error ("too many arguments to %%:version-compare");
8865 switch_len
= strlen (argv
[nargs
+ 1]);
8866 for (i
= 0; i
< n_switches
; i
++)
8867 if (!strncmp (switches
[i
].part1
, argv
[nargs
+ 1], switch_len
)
8868 && check_live_switch (i
, switch_len
))
8869 switch_value
= switches
[i
].part1
+ switch_len
;
8871 if (switch_value
== NULL
)
8875 comp1
= compare_version_strings (switch_value
, argv
[1]);
8877 comp2
= compare_version_strings (switch_value
, argv
[2]);
8879 comp2
= -1; /* This value unused. */
8882 switch (argv
[0][0] << 8 | argv
[0][1])
8884 case '>' << 8 | '=':
8885 result
= comp1
>= 0;
8887 case '!' << 8 | '<':
8888 result
= comp1
>= 0 || switch_value
== NULL
;
8893 case '!' << 8 | '>':
8894 result
= comp1
< 0 || switch_value
== NULL
;
8896 case '>' << 8 | '<':
8897 result
= comp1
>= 0 && comp2
< 0;
8899 case '<' << 8 | '>':
8900 result
= comp1
< 0 || comp2
>= 0;
8904 fatal_error ("unknown operator %qs in %%:version-compare", argv
[0]);
8909 return argv
[nargs
+ 2];
8912 /* %:include builtin spec function. This differs from %include in that it
8913 can be nested inside a spec, and thus be conditionalized. It takes
8914 one argument, the filename, and looks for it in the startfile path.
8915 The result is always NULL, i.e. an empty expansion. */
8918 include_spec_function (int argc
, const char **argv
)
8925 file
= find_a_file (&startfile_prefixes
, argv
[0], R_OK
, true);
8926 read_specs (file
? file
: argv
[0], false, false);
8931 /* %:find-file spec function. This function replaces its argument by
8932 the file found through find_file, that is the -print-file-name gcc
8935 find_file_spec_function (int argc
, const char **argv
)
8942 file
= find_file (argv
[0]);
8947 /* %:find-plugindir spec function. This function replaces its argument
8948 by the -iplugindir=<dir> option. `dir' is found through find_file, that
8949 is the -print-file-name gcc program option. */
8951 find_plugindir_spec_function (int argc
, const char **argv ATTRIBUTE_UNUSED
)
8958 option
= concat ("-iplugindir=", find_file ("plugin"), NULL
);
8963 /* %:print-asm-header spec function. Print a banner to say that the
8964 following output is from the assembler. */
8967 print_asm_header_spec_function (int arg ATTRIBUTE_UNUSED
,
8968 const char **argv ATTRIBUTE_UNUSED
)
8970 printf (_("Assembler options\n=================\n\n"));
8971 printf (_("Use \"-Wa,OPTION\" to pass \"OPTION\" to the assembler.\n\n"));
8976 /* Get a random number for -frandom-seed */
8978 static unsigned HOST_WIDE_INT
8979 get_random_number (void)
8981 unsigned HOST_WIDE_INT ret
= 0;
8984 fd
= open ("/dev/urandom", O_RDONLY
);
8987 read (fd
, &ret
, sizeof (HOST_WIDE_INT
));
8993 /* Get some more or less random data. */
8994 #ifdef HAVE_GETTIMEOFDAY
8998 gettimeofday (&tv
, NULL
);
8999 ret
= tv
.tv_sec
* 1000 + tv
.tv_usec
/ 1000;
9003 time_t now
= time (NULL
);
9005 if (now
!= (time_t)-1)
9006 ret
= (unsigned) now
;
9010 return ret
^ getpid ();
9013 /* %:compare-debug-dump-opt spec function. Save the last argument,
9014 expected to be the last -fdump-final-insns option, or generate a
9018 compare_debug_dump_opt_spec_function (int arg
,
9019 const char **argv ATTRIBUTE_UNUSED
)
9024 static char random_seed
[HOST_BITS_PER_WIDE_INT
/ 4 + 3];
9027 fatal_error ("too many arguments to %%:compare-debug-dump-opt");
9029 do_spec_2 ("%{fdump-final-insns=*:%*}");
9030 do_spec_1 (" ", 0, NULL
);
9032 if (argbuf
.length () > 0
9033 && strcmp (argv
[argbuf
.length () - 1], "."))
9038 name
= xstrdup (argv
[argbuf
.length () - 1]);
9043 const char *ext
= NULL
;
9045 if (argbuf
.length () > 0)
9047 do_spec_2 ("%{o*:%*}%{!o:%{!S:%b%O}%{S:%b.s}}");
9050 else if (!compare_debug
)
9053 do_spec_2 ("%g.gkd");
9055 do_spec_1 (" ", 0, NULL
);
9057 gcc_assert (argbuf
.length () > 0);
9059 name
= concat (argbuf
.last (), ext
, NULL
);
9061 ret
= concat ("-fdump-final-insns=", name
, NULL
);
9064 which
= compare_debug
< 0;
9065 debug_check_temp_file
[which
] = name
;
9069 unsigned HOST_WIDE_INT value
= get_random_number ();
9071 sprintf (random_seed
, HOST_WIDE_INT_PRINT_HEX
, value
);
9077 ret
= concat ("%{!frandom-seed=*:-frandom-seed=", random_seed
, "} ",
9088 static const char *debug_auxbase_opt
;
9090 /* %:compare-debug-self-opt spec function. Expands to the options
9091 that are to be passed in the second compilation of
9095 compare_debug_self_opt_spec_function (int arg
,
9096 const char **argv ATTRIBUTE_UNUSED
)
9099 fatal_error ("too many arguments to %%:compare-debug-self-opt");
9101 if (compare_debug
>= 0)
9104 do_spec_2 ("%{c|S:%{o*:%*}}");
9105 do_spec_1 (" ", 0, NULL
);
9107 if (argbuf
.length () > 0)
9108 debug_auxbase_opt
= concat ("-auxbase-strip ",
9112 debug_auxbase_opt
= NULL
;
9115 %<o %<MD %<MMD %<MF* %<MG %<MP %<MQ* %<MT* \
9116 %<fdump-final-insns=* -w -S -o %j \
9117 %{!fcompare-debug-second:-fcompare-debug-second} \
9118 ", compare_debug_opt
, NULL
);
9121 /* %:compare-debug-auxbase-opt spec function. Expands to the auxbase
9122 options that are to be passed in the second compilation of
9123 compare-debug. It expects, as an argument, the basename of the
9124 current input file name, with the .gk suffix appended to it. */
9127 compare_debug_auxbase_opt_spec_function (int arg
,
9134 fatal_error ("too few arguments to %%:compare-debug-auxbase-opt");
9137 fatal_error ("too many arguments to %%:compare-debug-auxbase-opt");
9139 if (compare_debug
>= 0)
9142 len
= strlen (argv
[0]);
9143 if (len
< 3 || strcmp (argv
[0] + len
- 3, ".gk") != 0)
9144 fatal_error ("argument to %%:compare-debug-auxbase-opt "
9145 "does not end in .gk");
9147 if (debug_auxbase_opt
)
9148 return debug_auxbase_opt
;
9150 #define OPT "-auxbase "
9153 name
= (char*) xmalloc (sizeof (OPT
) + len
);
9154 memcpy (name
, OPT
, sizeof (OPT
) - 1);
9155 memcpy (name
+ sizeof (OPT
) - 1, argv
[0], len
);
9156 name
[sizeof (OPT
) - 1 + len
] = '\0';
9163 /* %:pass-through-libs spec function. Finds all -l options and input
9164 file names in the lib spec passed to it, and makes a list of them
9165 prepended with the plugin option to cause them to be passed through
9166 to the final link after all the new object files have been added. */
9169 pass_through_libs_spec_func (int argc
, const char **argv
)
9171 char *prepended
= xstrdup (" ");
9173 /* Shlemiel the painter's algorithm. Innately horrible, but at least
9174 we know that there will never be more than a handful of strings to
9175 concat, and it's only once per run, so it's not worth optimising. */
9176 for (n
= 0; n
< argc
; n
++)
9178 char *old
= prepended
;
9179 /* Anything that isn't an option is a full path to an output
9180 file; pass it through if it ends in '.a'. Among options,
9182 if (argv
[n
][0] == '-' && argv
[n
][1] == 'l')
9184 const char *lopt
= argv
[n
] + 2;
9185 /* Handle both joined and non-joined -l options. If for any
9186 reason there's a trailing -l with no joined or following
9187 arg just discard it. */
9188 if (!*lopt
&& ++n
>= argc
)
9192 prepended
= concat (prepended
, "-plugin-opt=-pass-through=-l",
9195 else if (!strcmp (".a", argv
[n
] + strlen (argv
[n
]) - 2))
9197 prepended
= concat (prepended
, "-plugin-opt=-pass-through=",
9198 argv
[n
], " ", NULL
);
9200 if (prepended
!= old
)
9206 /* %:replace-extension spec function. Replaces the extension of the
9207 first argument with the second argument. */
9210 replace_extension_spec_func (int argc
, const char **argv
)
9218 fatal_error ("too few arguments to %%:replace-extension");
9220 name
= xstrdup (argv
[0]);
9222 for (i
= strlen (name
) - 1; i
>= 0; i
--)
9223 if (IS_DIR_SEPARATOR (name
[i
]))
9226 p
= strrchr (name
+ i
+ 1, '.');
9230 result
= concat (name
, argv
[1], NULL
);
9236 /* Insert backslash before spaces in ORIG (usually a file path), to
9237 avoid being broken by spec parser.
9239 This function is needed as do_spec_1 treats white space (' ' and '\t')
9240 as the end of an argument. But in case of -plugin /usr/gcc install/xxx.so,
9241 the file name should be treated as a single argument rather than being
9242 broken into multiple. Solution is to insert '\\' before the space in a
9245 This function converts and only converts all occurrence of ' '
9246 to '\\' + ' ' and '\t' to '\\' + '\t'. For example:
9250 "a\\ b" -> "a\\\\ b"
9252 orig: input null-terminating string that was allocated by xalloc. The
9253 memory it points to might be freed in this function. Behavior undefined
9254 if ORIG wasn't xalloced or was freed already at entry.
9256 Return: ORIG if no conversion needed. Otherwise a newly allocated string
9257 that was converted from ORIG. */
9260 convert_white_space (char *orig
)
9262 int len
, number_of_space
= 0;
9264 for (len
= 0; orig
[len
]; len
++)
9265 if (orig
[len
] == ' ' || orig
[len
] == '\t') number_of_space
++;
9267 if (number_of_space
)
9269 char *new_spec
= (char *) xmalloc (len
+ number_of_space
+ 1);
9271 for (j
= 0, k
= 0; j
<= len
; j
++, k
++)
9273 if (orig
[j
] == ' ' || orig
[j
] == '\t')
9274 new_spec
[k
++] = '\\';
9275 new_spec
[k
] = orig
[j
];