1 /* Compiler driver program that can handle many languages.
2 Copyright (C) 1987, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
3 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009,
5 Free Software Foundation, Inc.
7 This file is part of GCC.
9 GCC is free software; you can redistribute it and/or modify it under
10 the terms of the GNU General Public License as published by the Free
11 Software Foundation; either version 3, or (at your option) any later
14 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
15 WARRANTY; without even the implied warranty of MERCHANTABILITY or
16 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
19 You should have received a copy of the GNU General Public License
20 along with GCC; see the file COPYING3. If not see
21 <http://www.gnu.org/licenses/>. */
23 /* This program is the user interface to the C compiler and possibly to
24 other compilers. It is used because compilation is a complicated procedure
25 which involves running several programs and passing temporary files between
26 them, forwarding the users switches to those programs selectively,
27 and deleting the temporary files at the end.
29 CC recognizes how to compile each input file by suffixes in the file names.
30 Once it knows which kind of compilation to perform, the procedure for
31 compilation is specified by a string called a "spec". */
35 #include "coretypes.h"
36 #include "multilib.h" /* before tm.h */
43 #include "diagnostic.h"
48 /* By default there is no special suffix for target executables. */
49 /* FIXME: when autoconf is fixed, remove the host check - dj */
50 #if defined(TARGET_EXECUTABLE_SUFFIX) && defined(HOST_EXECUTABLE_SUFFIX)
51 #define HAVE_TARGET_EXECUTABLE_SUFFIX
54 /* By default there is no special suffix for host executables. */
55 #ifdef HOST_EXECUTABLE_SUFFIX
56 #define HAVE_HOST_EXECUTABLE_SUFFIX
58 #define HOST_EXECUTABLE_SUFFIX ""
61 /* By default, the suffix for target object files is ".o". */
62 #ifdef TARGET_OBJECT_SUFFIX
63 #define HAVE_TARGET_OBJECT_SUFFIX
65 #define TARGET_OBJECT_SUFFIX ".o"
68 static const char dir_separator_str[] = { DIR_SEPARATOR, 0 };
70 /* Most every one is fine with LIBRARY_PATH. For some, it conflicts. */
71 #ifndef LIBRARY_PATH_ENV
72 #define LIBRARY_PATH_ENV "LIBRARY_PATH"
75 /* If a stage of compilation returns an exit status >= 1,
76 compilation of that file ceases. */
78 #define MIN_FATAL_STATUS 1
80 /* Flag set by cppspec.c to 1. */
83 /* Flag set to nonzero if an @file argument has been supplied to gcc. */
84 static bool at_file_supplied;
86 /* Definition of string containing the arguments given to configure. */
87 #include "configargs.h"
89 /* Flag saying to print the command line options understood by gcc and its
92 static int print_help_list;
94 /* Flag saying to print the version of gcc and its sub-processes. */
96 static int print_version;
98 /* Flag indicating whether we should ONLY print the command and
99 arguments (like verbose_flag) without executing the command.
100 Displayed arguments are quoted so that the generated command
101 line is suitable for execution. This is intended for use in
102 shell scripts to capture the driver-generated command line. */
103 static int verbose_only_flag;
105 /* Flag indicating how to print command line options of sub-processes. */
107 static int print_subprocess_help;
109 /* Whether we should report subprocess execution times to a file. */
111 FILE *report_times_to_file = NULL;
113 /* Nonzero means place this string before uses of /, so that include
114 and library files can be found in an alternate location. */
116 #ifdef TARGET_SYSTEM_ROOT
117 static const char *target_system_root = TARGET_SYSTEM_ROOT;
119 static const char *target_system_root = 0;
122 /* Nonzero means pass the updated target_system_root to the compiler. */
124 static int target_system_root_changed;
126 /* Nonzero means append this string to target_system_root. */
128 static const char *target_sysroot_suffix = 0;
130 /* Nonzero means append this string to target_system_root for headers. */
132 static const char *target_sysroot_hdrs_suffix = 0;
134 /* Nonzero means write "temp" files in source directory
135 and use the source file's name in them, and don't delete them. */
137 static enum save_temps {
138 SAVE_TEMPS_NONE, /* no -save-temps */
139 SAVE_TEMPS_CWD, /* -save-temps in current directory */
140 SAVE_TEMPS_OBJ /* -save-temps in object directory */
143 /* Output file to use to get the object directory for -save-temps=obj */
144 static char *save_temps_prefix = 0;
145 static size_t save_temps_length = 0;
147 /* The compiler version. */
149 static const char *compiler_version;
151 /* The target version. */
153 static const char *const spec_version = DEFAULT_TARGET_VERSION;
155 /* The target machine. */
157 static const char *spec_machine = DEFAULT_TARGET_MACHINE;
159 /* Nonzero if cross-compiling.
160 When -b is used, the value comes from the `specs' file. */
162 #ifdef CROSS_DIRECTORY_STRUCTURE
163 static const char *cross_compile = "1";
165 static const char *cross_compile = "0";
168 /* Greatest exit code of sub-processes that has been encountered up to
170 static int greatest_status = 1;
172 /* This is the obstack which we use to allocate many strings. */
174 static struct obstack obstack;
176 /* This is the obstack to build an environment variable to pass to
177 collect2 that describes all of the relevant switches of what to
178 pass the compiler in building the list of pointers to constructors
181 static struct obstack collect_obstack;
183 /* Forward declaration for prototypes. */
187 static void init_spec (void);
188 static void store_arg (const char *, int, int);
189 static void insert_wrapper (const char *);
190 static char *load_specs (const char *);
191 static void read_specs (const char *, int);
192 static void set_spec (const char *, const char *);
193 static struct compiler *lookup_compiler (const char *, size_t, const char *);
194 static char *build_search_list (const struct path_prefix *, const char *,
196 static void xputenv (const char *);
197 static void putenv_from_prefixes (const struct path_prefix *, const char *,
199 static int access_check (const char *, int);
200 static char *find_a_file (const struct path_prefix *, const char *, int, bool);
201 static void add_prefix (struct path_prefix *, const char *, const char *,
203 static void add_sysrooted_prefix (struct path_prefix *, const char *,
204 const char *, int, int, int);
205 static char *skip_whitespace (char *);
206 static void delete_if_ordinary (const char *);
207 static void delete_temp_files (void);
208 static void delete_failure_queue (void);
209 static void clear_failure_queue (void);
210 static int check_live_switch (int, int);
211 static const char *handle_braces (const char *);
212 static inline bool input_suffix_matches (const char *, const char *);
213 static inline bool switch_matches (const char *, const char *, int);
214 static inline void mark_matching_switches (const char *, const char *, int);
215 static inline void process_marked_switches (void);
216 static const char *process_brace_body (const char *, const char *, const char *, int, int);
217 static const struct spec_function *lookup_spec_function (const char *);
218 static const char *eval_spec_function (const char *, const char *);
219 static const char *handle_spec_function (const char *);
220 static char *save_string (const char *, int);
221 static void set_collect_gcc_options (void);
222 static int do_spec_1 (const char *, int, const char *);
223 static int do_spec_2 (const char *);
224 static void do_option_spec (const char *, const char *);
225 static void do_self_spec (const char *);
226 static const char *find_file (const char *);
227 static int is_directory (const char *, bool);
228 static const char *validate_switches (const char *);
229 static void validate_all_switches (void);
230 static inline void validate_switches_from_spec (const char *);
231 static void give_switch (int, int);
232 static int used_arg (const char *, int);
233 static int default_arg (const char *, int);
234 static void set_multilib_dir (void);
235 static void print_multilib_info (void);
236 static void perror_with_name (const char *);
237 static void display_help (void);
238 static void add_preprocessor_option (const char *, int);
239 static void add_assembler_option (const char *, int);
240 static void add_linker_option (const char *, int);
241 static void process_command (unsigned int, struct cl_decoded_option *);
242 static int execute (void);
243 static void alloc_args (void);
244 static void clear_args (void);
245 static void fatal_signal (int);
246 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
247 static void init_gcc_specs (struct obstack *, const char *, const char *,
250 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
251 static const char *convert_filename (const char *, int, int);
254 static const char *getenv_spec_function (int, const char **);
255 static const char *if_exists_spec_function (int, const char **);
256 static const char *if_exists_else_spec_function (int, const char **);
257 static const char *replace_outfile_spec_function (int, const char **);
258 static const char *remove_outfile_spec_function (int, const char **);
259 static const char *version_compare_spec_function (int, const char **);
260 static const char *include_spec_function (int, const char **);
261 static const char *find_file_spec_function (int, const char **);
262 static const char *find_plugindir_spec_function (int, const char **);
263 static const char *print_asm_header_spec_function (int, const char **);
264 static const char *compare_debug_dump_opt_spec_function (int, const char **);
265 static const char *compare_debug_self_opt_spec_function (int, const char **);
266 static const char *compare_debug_auxbase_opt_spec_function (int, const char **);
267 static const char *pass_through_libs_spec_func (int, const char **);
269 /* The Specs Language
271 Specs are strings containing lines, each of which (if not blank)
272 is made up of a program name, and arguments separated by spaces.
273 The program name must be exact and start from root, since no path
274 is searched and it is unreliable to depend on the current working directory.
275 Redirection of input or output is not supported; the subprograms must
276 accept filenames saying what files to read and write.
278 In addition, the specs can contain %-sequences to substitute variable text
279 or for conditional text. Here is a table of all defined %-sequences.
280 Note that spaces are not generated automatically around the results of
281 expanding these sequences; therefore, you can concatenate them together
282 or with constant text in a single argument.
284 %% substitute one % into the program name or argument.
285 %i substitute the name of the input file being processed.
286 %b substitute the basename of the input file being processed.
287 This is the substring up to (and not including) the last period
288 and not including the directory unless -save-temps was specified
289 to put temporaries in a different location.
290 %B same as %b, but include the file suffix (text after the last period).
292 substitute a file name that has suffix SUFFIX and is chosen
293 once per compilation, and mark the argument a la %d. To reduce
294 exposure to denial-of-service attacks, the file name is now
295 chosen in a way that is hard to predict even when previously
296 chosen file names are known. For example, `%g.s ... %g.o ... %g.s'
297 might turn into `ccUVUUAU.s ccXYAXZ12.o ccUVUUAU.s'. SUFFIX matches
298 the regexp "[.0-9A-Za-z]*%O"; "%O" is treated exactly as if it
299 had been pre-processed. Previously, %g was simply substituted
300 with a file name chosen once per compilation, without regard
301 to any appended suffix (which was therefore treated just like
302 ordinary text), making such attacks more likely to succeed.
304 like %g, but if -pipe is in effect, expands simply to "-".
306 like %g, but if -pipe is in effect, expands to nothing. (We have both
307 %| and %m to accommodate differences between system assemblers; see
308 the AS_NEEDS_DASH_FOR_PIPED_INPUT target macro.)
310 like %g, but generates a new temporary file name even if %uSUFFIX
313 substitutes the last file name generated with %uSUFFIX, generating a
314 new one if there is no such last file name. In the absence of any
315 %uSUFFIX, this is just like %gSUFFIX, except they don't share
316 the same suffix "space", so `%g.s ... %U.s ... %g.s ... %U.s'
317 would involve the generation of two distinct file names, one
318 for each `%g.s' and another for each `%U.s'. Previously, %U was
319 simply substituted with a file name chosen for the previous %u,
320 without regard to any appended suffix.
322 substitutes the name of the HOST_BIT_BUCKET, if any, and if it is
323 writable, and if save-temps is off; otherwise, substitute the name
324 of a temporary file, just like %u. This temporary file is not
325 meant for communication between processes, but rather as a junk
328 substitutes .SUFFIX for the suffixes of a matched switch's args when
329 it is subsequently output with %*. SUFFIX is terminated by the next
331 %d marks the argument containing or following the %d as a
332 temporary file name, so that that file will be deleted if GCC exits
333 successfully. Unlike %g, this contributes no text to the argument.
334 %w marks the argument containing or following the %w as the
335 "output file" of this compilation. This puts the argument
336 into the sequence of arguments that %o will substitute later.
337 %V indicates that this compilation produces no "output file".
339 like %{...} but mark last argument supplied within
340 as a file to be deleted on failure.
341 %o substitutes the names of all the output files, with spaces
342 automatically placed around them. You should write spaces
343 around the %o as well or the results are undefined.
344 %o is for use in the specs for running the linker.
345 Input files whose names have no recognized suffix are not compiled
346 at all, but they are included among the output files, so they will
348 %O substitutes the suffix for object files. Note that this is
349 handled specially when it immediately follows %g, %u, or %U
350 (with or without a suffix argument) because of the need for
351 those to form complete file names. The handling is such that
352 %O is treated exactly as if it had already been substituted,
353 except that %g, %u, and %U do not currently support additional
354 SUFFIX characters following %O as they would following, for
356 %I Substitute any of -iprefix (made from GCC_EXEC_PREFIX), -isysroot
357 (made from TARGET_SYSTEM_ROOT), -isystem (made from COMPILER_PATH
358 and -B options) and -imultilib as necessary.
359 %s current argument is the name of a library or startup file of some sort.
360 Search for that file in a standard list of directories
361 and substitute the full name found.
362 %eSTR Print STR as an error message. STR is terminated by a newline.
363 Use this when inconsistent options are detected.
364 %nSTR Print STR as a notice. STR is terminated by a newline.
365 %x{OPTION} Accumulate an option for %X.
366 %X Output the accumulated linker options specified by compilations.
367 %Y Output the accumulated assembler options specified by compilations.
368 %Z Output the accumulated preprocessor options specified by compilations.
369 %a process ASM_SPEC as a spec.
370 This allows config.h to specify part of the spec for running as.
371 %A process ASM_FINAL_SPEC as a spec. A capital A is actually
372 used here. This can be used to run a post-processor after the
373 assembler has done its job.
374 %D Dump out a -L option for each directory in startfile_prefixes.
375 If multilib_dir is set, extra entries are generated with it affixed.
376 %l process LINK_SPEC as a spec.
377 %L process LIB_SPEC as a spec.
378 %G process LIBGCC_SPEC as a spec.
379 %R Output the concatenation of target_system_root and
380 target_sysroot_suffix.
381 %S process STARTFILE_SPEC as a spec. A capital S is actually used here.
382 %E process ENDFILE_SPEC as a spec. A capital E is actually used here.
383 %C process CPP_SPEC as a spec.
384 %1 process CC1_SPEC as a spec.
385 %2 process CC1PLUS_SPEC as a spec.
386 %* substitute the variable part of a matched option. (See below.)
387 Note that each comma in the substituted string is replaced by
389 %<S remove all occurrences of -S from the command line.
390 Note - this command is position dependent. % commands in the
391 spec string before this one will see -S, % commands in the
392 spec string after this one will not.
393 %>S Similar to "%<S", but keep it in the GCC command line.
394 %<S* remove all occurrences of all switches beginning with -S from the
397 Call the named function FUNCTION, passing it ARGS. ARGS is
398 first processed as a nested spec string, then split into an
399 argument vector in the usual fashion. The function returns
400 a string which is processed as if it had appeared literally
401 as part of the current spec.
402 %{S} substitutes the -S switch, if that switch was given to GCC.
403 If that switch was not specified, this substitutes nothing.
404 Here S is a metasyntactic variable.
405 %{S*} substitutes all the switches specified to GCC whose names start
406 with -S. This is used for -o, -I, etc; switches that take
407 arguments. GCC considers `-o foo' as being one switch whose
408 name starts with `o'. %{o*} would substitute this text,
409 including the space; thus, two arguments would be generated.
410 %{S*&T*} likewise, but preserve order of S and T options (the order
411 of S and T in the spec is not significant). Can be any number
412 of ampersand-separated variables; for each the wild card is
413 optional. Useful for CPP as %{D*&U*&A*}.
415 %{S:X} substitutes X, if the -S switch was given to GCC.
416 %{!S:X} substitutes X, if the -S switch was NOT given to GCC.
417 %{S*:X} substitutes X if one or more switches whose names start
418 with -S was given to GCC. Normally X is substituted only
419 once, no matter how many such switches appeared. However,
420 if %* appears somewhere in X, then X will be substituted
421 once for each matching switch, with the %* replaced by the
422 part of that switch that matched the '*'.
423 %{.S:X} substitutes X, if processing a file with suffix S.
424 %{!.S:X} substitutes X, if NOT processing a file with suffix S.
425 %{,S:X} substitutes X, if processing a file which will use spec S.
426 %{!,S:X} substitutes X, if NOT processing a file which will use spec S.
428 %{S|T:X} substitutes X if either -S or -T was given to GCC. This may be
429 combined with '!', '.', ',', and '*' as above binding stronger
431 If %* appears in X, all of the alternatives must be starred, and
432 only the first matching alternative is substituted.
433 %{S:X; if S was given to GCC, substitutes X;
434 T:Y; else if T was given to GCC, substitutes Y;
435 :D} else substitutes D. There can be as many clauses as you need.
436 This may be combined with '.', '!', ',', '|', and '*' as above.
438 %(Spec) processes a specification defined in a specs file as *Spec:
439 %[Spec] as above, but put __ around -D arguments
441 The conditional text X in a %{S:X} or similar construct may contain
442 other nested % constructs or spaces, or even newlines. They are
443 processed as usual, as described above. Trailing white space in X is
444 ignored. White space may also appear anywhere on the left side of the
445 colon in these constructs, except between . or * and the corresponding
448 The -O, -f, -m, and -W switches are handled specifically in these
449 constructs. If another value of -O or the negated form of a -f, -m, or
450 -W switch is found later in the command line, the earlier switch
451 value is ignored, except with {S*} where S is just one letter; this
452 passes all matching options.
454 The character | at the beginning of the predicate text is used to indicate
455 that a command should be piped to the following command, but only if -pipe
458 Note that it is built into GCC which switches take arguments and which
459 do not. You might think it would be useful to generalize this to
460 allow each compiler's spec to say which switches take arguments. But
461 this cannot be done in a consistent fashion. GCC cannot even decide
462 which input files have been specified without knowing which switches
463 take arguments, and it must know which input files to compile in order
464 to tell which compilers to run.
466 GCC also knows implicitly that arguments starting in `-l' are to be
467 treated as compiler output files, and passed to the linker in their
468 proper position among the other output files. */
470 /* Define the macros used for specs %a, %l, %L, %S, %C, %1. */
472 /* config.h can define ASM_SPEC to provide extra args to the assembler
473 or extra switch-translations. */
478 /* config.h can define ASM_FINAL_SPEC to run a post processor after
479 the assembler has run. */
480 #ifndef ASM_FINAL_SPEC
481 #define ASM_FINAL_SPEC ""
484 /* config.h can define CPP_SPEC to provide extra args to the C preprocessor
485 or extra switch-translations. */
490 /* config.h can define CC1_SPEC to provide extra args to cc1 and cc1plus
491 or extra switch-translations. */
496 /* config.h can define CC1PLUS_SPEC to provide extra args to cc1plus
497 or extra switch-translations. */
499 #define CC1PLUS_SPEC ""
502 /* config.h can define LINK_SPEC to provide extra args to the linker
503 or extra switch-translations. */
508 /* config.h can define LIB_SPEC to override the default libraries. */
510 #define LIB_SPEC "%{!shared:%{g*:-lg} %{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p}}"
515 /* XXX: valid only for GNU ld */
516 /* XXX: should exactly match hooks provided by libmudflap.a */
517 #define MFWRAP_SPEC " %{static: %{fmudflap|fmudflapth: \
518 --wrap=malloc --wrap=free --wrap=calloc --wrap=realloc\
519 --wrap=mmap --wrap=munmap --wrap=alloca\
520 } %{fmudflapth: --wrap=pthread_create\
521 }} %{fmudflap|fmudflapth: --wrap=main}"
524 #define MFLIB_SPEC "%{fmudflap|fmudflapth: -export-dynamic}"
527 /* When using -fsplit-stack we need to wrap pthread_create, in order
528 to initialize the stack guard. We always use wrapping, rather than
529 shared library ordering, and we keep the wrapper function in
530 libgcc. This is not yet a real spec, though it could become one;
531 it is currently just stuffed into LINK_SPEC. FIXME: This wrapping
532 only works with GNU ld and gold. FIXME: This is incompatible with
533 -fmudflap when linking statically, which wants to do its own
535 #define STACK_SPLIT_SPEC " %{fsplit-stack: --wrap=pthread_create}"
537 /* config.h can define LIBGCC_SPEC to override how and when libgcc.a is
540 #if defined(REAL_LIBGCC_SPEC)
541 #define LIBGCC_SPEC REAL_LIBGCC_SPEC
542 #elif defined(LINK_LIBGCC_SPECIAL_1)
543 /* Have gcc do the search for libgcc.a. */
544 #define LIBGCC_SPEC "libgcc.a%s"
546 #define LIBGCC_SPEC "-lgcc"
550 /* config.h can define STARTFILE_SPEC to override the default crt0 files. */
551 #ifndef STARTFILE_SPEC
552 #define STARTFILE_SPEC \
553 "%{!shared:%{pg:gcrt0%O%s}%{!pg:%{p:mcrt0%O%s}%{!p:crt0%O%s}}}"
556 /* config.h can define ENDFILE_SPEC to override the default crtn files. */
558 #define ENDFILE_SPEC ""
562 #define LINKER_NAME "collect2"
565 #ifdef HAVE_AS_DEBUG_PREFIX_MAP
566 #define ASM_MAP " %{fdebug-prefix-map=*:--debug-prefix-map %*}"
571 /* Define ASM_DEBUG_SPEC to be a spec suitable for translating '-g'
573 #ifndef ASM_DEBUG_SPEC
574 # if defined(DBX_DEBUGGING_INFO) && defined(DWARF2_DEBUGGING_INFO) \
575 && defined(HAVE_AS_GDWARF2_DEBUG_FLAG) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
576 # define ASM_DEBUG_SPEC \
577 (PREFERRED_DEBUGGING_TYPE == DBX_DEBUG \
578 ? "%{!g0:%{gdwarf-2*:--gdwarf2}%{!gdwarf-2*:%{g*:--gstabs}}}" ASM_MAP \
579 : "%{!g0:%{gstabs*:--gstabs}%{!gstabs*:%{g*:--gdwarf2}}}" ASM_MAP)
581 # if defined(DBX_DEBUGGING_INFO) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
582 # define ASM_DEBUG_SPEC "%{g*:%{!g0:--gstabs}}" ASM_MAP
584 # if defined(DWARF2_DEBUGGING_INFO) && defined(HAVE_AS_GDWARF2_DEBUG_FLAG)
585 # define ASM_DEBUG_SPEC "%{g*:%{!g0:--gdwarf2}}" ASM_MAP
589 #ifndef ASM_DEBUG_SPEC
590 # define ASM_DEBUG_SPEC ""
593 /* Here is the spec for running the linker, after compiling all files. */
595 /* This is overridable by the target in case they need to specify the
596 -lgcc and -lc order specially, yet not require them to override all
597 of LINK_COMMAND_SPEC. */
598 #ifndef LINK_GCC_C_SEQUENCE_SPEC
599 #define LINK_GCC_C_SEQUENCE_SPEC "%G %L %G"
602 #ifndef LINK_SSP_SPEC
603 #ifdef TARGET_LIBC_PROVIDES_SSP
604 #define LINK_SSP_SPEC "%{fstack-protector:}"
606 #define LINK_SSP_SPEC "%{fstack-protector|fstack-protector-all:-lssp_nonshared -lssp}"
610 #ifndef LINK_PIE_SPEC
612 #define LINK_PIE_SPEC "%{pie:-pie} "
614 #define LINK_PIE_SPEC "%{pie:} "
618 #ifndef LINK_BUILDID_SPEC
619 # if defined(HAVE_LD_BUILDID) && defined(ENABLE_LD_BUILDID)
620 # define LINK_BUILDID_SPEC "%{!r:--build-id} "
624 /* Conditional to test whether plugin is used or not. */
625 #ifdef HAVE_LTO_PLUGIN
626 #define PLUGIN_COND "!fno-use-linker-plugin"
628 #define PLUGIN_COND "fuse-linker-plugin"
632 /* -u* was put back because both BSD and SysV seem to support it. */
633 /* %{static:} simply prevents an error message if the target machine
634 doesn't handle -static. */
635 /* We want %{T*} after %{L*} and %D so that it can be used to specify linker
636 scripts which exist in user specified directories, or in standard
638 /* We pass any -flto flags on to the linker, which is expected
639 to understand them. In practice, this means it had better be collect2. */
640 #ifndef LINK_COMMAND_SPEC
641 #define LINK_COMMAND_SPEC "\
642 %{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:\
645 -plugin %(linker_plugin_file) \
646 -plugin-opt=%(lto_wrapper) \
647 -plugin-opt=-fresolution=%u.res \
648 %{!nostdlib:%{!nodefaultlibs:%:pass-through-libs(%(link_gcc_c_sequence))}} \
650 %{flto*:%<fcompare-debug*} \
651 %{flto*} %l " LINK_PIE_SPEC \
652 "%X %{o*} %{e*} %{N} %{n} %{r}\
653 %{s} %{t} %{u*} %{z} %{Z} %{!nostdlib:%{!nostartfiles:%S}}\
654 %{static:} %{L*} %(mfwrap) %(link_libgcc) %o\
655 %{fopenmp|ftree-parallelize-loops=*:%:include(libgomp.spec)%(link_gomp)}\
656 %(mflib) " STACK_SPLIT_SPEC "\
657 %{fprofile-arcs|fprofile-generate*|coverage:-lgcov}\
658 %{!nostdlib:%{!nodefaultlibs:%(link_ssp) %(link_gcc_c_sequence)}}\
659 %{!nostdlib:%{!nostartfiles:%E}} %{T*} }}}}}}"
662 #ifndef LINK_LIBGCC_SPEC
663 /* Generate -L options for startfile prefix list. */
664 # define LINK_LIBGCC_SPEC "%D"
667 #ifndef STARTFILE_PREFIX_SPEC
668 # define STARTFILE_PREFIX_SPEC ""
672 # define SYSROOT_SPEC "--sysroot=%R"
675 #ifndef SYSROOT_SUFFIX_SPEC
676 # define SYSROOT_SUFFIX_SPEC ""
679 #ifndef SYSROOT_HEADERS_SUFFIX_SPEC
680 # define SYSROOT_HEADERS_SUFFIX_SPEC ""
683 static const char *asm_debug;
684 static const char *cpp_spec = CPP_SPEC;
685 static const char *cc1_spec = CC1_SPEC;
686 static const char *cc1plus_spec = CC1PLUS_SPEC;
687 static const char *link_gcc_c_sequence_spec = LINK_GCC_C_SEQUENCE_SPEC;
688 static const char *link_ssp_spec = LINK_SSP_SPEC;
689 static const char *asm_spec = ASM_SPEC;
690 static const char *asm_final_spec = ASM_FINAL_SPEC;
691 static const char *link_spec = LINK_SPEC;
692 static const char *lib_spec = LIB_SPEC;
693 static const char *mfwrap_spec = MFWRAP_SPEC;
694 static const char *mflib_spec = MFLIB_SPEC;
695 static const char *link_gomp_spec = "";
696 static const char *libgcc_spec = LIBGCC_SPEC;
697 static const char *endfile_spec = ENDFILE_SPEC;
698 static const char *startfile_spec = STARTFILE_SPEC;
699 static const char *linker_name_spec = LINKER_NAME;
700 static const char *linker_plugin_file_spec = "";
701 static const char *lto_wrapper_spec = "";
702 static const char *lto_gcc_spec = "";
703 static const char *link_command_spec = LINK_COMMAND_SPEC;
704 static const char *link_libgcc_spec = LINK_LIBGCC_SPEC;
705 static const char *startfile_prefix_spec = STARTFILE_PREFIX_SPEC;
706 static const char *sysroot_spec = SYSROOT_SPEC;
707 static const char *sysroot_suffix_spec = SYSROOT_SUFFIX_SPEC;
708 static const char *sysroot_hdrs_suffix_spec = SYSROOT_HEADERS_SUFFIX_SPEC;
710 /* Standard options to cpp, cc1, and as, to reduce duplication in specs.
711 There should be no need to override these in target dependent files,
712 but we need to copy them to the specs file so that newer versions
713 of the GCC driver can correctly drive older tool chains with the
714 appropriate -B options. */
716 /* When cpplib handles traditional preprocessing, get rid of this, and
717 call cc1 (or cc1obj in objc/lang-specs.h) from the main specs so
718 that we default the front end language better. */
719 static const char *trad_capable_cpp =
720 "cc1 -E %{traditional|traditional-cpp:-traditional-cpp}";
722 /* We don't wrap .d files in %W{} since a missing .d file, and
723 therefore no dependency entry, confuses make into thinking a .o
724 file that happens to exist is up-to-date. */
725 static const char *cpp_unique_options =
726 "%{!Q:-quiet} %{nostdinc*} %{C} %{CC} %{v} %{I*&F*} %{P} %I\
727 %{MD:-MD %{!o:%b.d}%{o*:%.d%*}}\
728 %{MMD:-MMD %{!o:%b.d}%{o*:%.d%*}}\
729 %{M} %{MM} %{MF*} %{MG} %{MP} %{MQ*} %{MT*}\
730 %{!E:%{!M:%{!MM:%{!MT:%{!MQ:%{MD|MMD:%{o*:-MQ %*}}}}}}}\
731 %{remap} %{g3|ggdb3|gstabs3|gcoff3|gxcoff3|gvms3:-dD}\
732 %{!iplugindir*:%{fplugin*:%:find-plugindir()}}\
733 %{H} %C %{D*&U*&A*} %{i*} %Z %i\
734 %{fmudflap:-D_MUDFLAP -include mf-runtime.h}\
735 %{fmudflapth:-D_MUDFLAP -D_MUDFLAPTH -include mf-runtime.h}\
738 /* This contains cpp options which are common with cc1_options and are passed
739 only when preprocessing only to avoid duplication. We pass the cc1 spec
740 options to the preprocessor so that it the cc1 spec may manipulate
741 options used to set target flags. Those special target flags settings may
742 in turn cause preprocessor symbols to be defined specially. */
743 static const char *cpp_options =
744 "%(cpp_unique_options) %1 %{m*} %{std*&ansi&trigraphs} %{W*&pedantic*} %{w}\
745 %{f*} %{g*:%{!g0:%{g*} %{!fno-working-directory:-fworking-directory}}} %{O*}\
746 %{undef} %{save-temps*:-fpch-preprocess}";
748 /* This contains cpp options which are not passed when the preprocessor
749 output will be used by another program. */
750 static const char *cpp_debug_options = "%{d*}";
752 /* NB: This is shared amongst all front-ends, except for Ada. */
753 static const char *cc1_options =
754 "%{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\
755 %{!iplugindir*:%{fplugin*:%:find-plugindir()}}\
756 %1 %{!Q:-quiet} %{!dumpbase:-dumpbase %B} %{d*} %{m*} %{aux-info*}\
757 %{fcompare-debug-second:%:compare-debug-auxbase-opt(%b)} \
758 %{!fcompare-debug-second:%{c|S:%{o*:-auxbase-strip %*}%{!o*:-auxbase %b}}}%{!c:%{!S:-auxbase %b}} \
759 %{g*} %{O*} %{W*&pedantic*} %{w} %{std*&ansi&trigraphs}\
760 %{v:-version} %{pg:-p} %{p} %{f*} %{undef}\
761 %{Qn:-fno-ident} %{Qy:} %{-help:--help}\
762 %{-target-help:--target-help}\
763 %{-version:--version}\
764 %{-help=*:--help=%*}\
765 %{!fsyntax-only:%{S:%W{o*}%{!o*:-o %b.s}}}\
766 %{fsyntax-only:-o %j} %{-param*}\
767 %{fmudflap|fmudflapth:-fno-builtin -fno-merge-constants}\
768 %{coverage:-fprofile-arcs -ftest-coverage}";
770 static const char *asm_options =
771 "%{--target-help:%:print-asm-header()} "
773 /* If GNU AS is used, then convert -w (no warnings), -I, and -v
774 to the assembler equivalents. */
775 "%{v} %{w:-W} %{I*} "
777 "%a %Y %{c:%W{o*}%{!o*:-o %w%b%O}}%{!c:-o %d%w%u%O}";
779 static const char *invoke_as =
780 #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT
782 %{fcompare-debug=*|fdump-final-insns=*:%:compare-debug-dump-opt()}\
783 %{!S:-o %|.s |\n as %(asm_options) %|.s %A }\
787 %{fcompare-debug=*|fdump-final-insns=*:%:compare-debug-dump-opt()}\
788 %{!S:-o %|.s |\n as %(asm_options) %m.s %A }\
792 /* Some compilers have limits on line lengths, and the multilib_select
793 and/or multilib_matches strings can be very long, so we build them at
795 static struct obstack multilib_obstack;
796 static const char *multilib_select;
797 static const char *multilib_matches;
798 static const char *multilib_defaults;
799 static const char *multilib_exclusions;
801 /* Check whether a particular argument is a default argument. */
803 #ifndef MULTILIB_DEFAULTS
804 #define MULTILIB_DEFAULTS { "" }
807 static const char *const multilib_defaults_raw[] = MULTILIB_DEFAULTS;
809 #ifndef DRIVER_SELF_SPECS
810 #define DRIVER_SELF_SPECS ""
813 /* Adding -fopenmp should imply pthreads. This is particularly important
814 for targets that use different start files and suchlike. */
815 #ifndef GOMP_SELF_SPECS
816 #define GOMP_SELF_SPECS "%{fopenmp|ftree-parallelize-loops=*: -pthread}"
819 static const char *const driver_self_specs[] = {
820 "%{fdump-final-insns:-fdump-final-insns=.} %<fdump-final-insns",
821 DRIVER_SELF_SPECS, CONFIGURE_SPECS, GOMP_SELF_SPECS
824 #ifndef OPTION_DEFAULT_SPECS
825 #define OPTION_DEFAULT_SPECS { "", "" }
834 static const struct default_spec
835 option_default_specs[] = { OPTION_DEFAULT_SPECS };
839 struct user_specs *next;
840 const char *filename;
843 static struct user_specs *user_specs_head, *user_specs_tail;
846 /* Record the mapping from file suffixes for compilation specs. */
850 const char *suffix; /* Use this compiler for input files
851 whose names end in this suffix. */
853 const char *spec; /* To use this compiler, run this spec. */
855 const char *cpp_spec; /* If non-NULL, substitute this spec
856 for `%C', rather than the usual
858 const int combinable; /* If nonzero, compiler can deal with
859 multiple source files at once (IMA). */
860 const int needs_preprocessing; /* If nonzero, source files need to
861 be run through a preprocessor. */
864 /* Pointer to a vector of `struct compiler' that gives the spec for
865 compiling a file, based on its suffix.
866 A file that does not end in any of these suffixes will be passed
867 unchanged to the loader and nothing else will be done to it.
869 An entry containing two 0s is used to terminate the vector.
871 If multiple entries match a file, the last matching one is used. */
873 static struct compiler *compilers;
875 /* Number of entries in `compilers', not counting the null terminator. */
877 static int n_compilers;
879 /* The default list of file name suffixes and their compilation specs. */
881 static const struct compiler default_compilers[] =
883 /* Add lists of suffixes of known languages here. If those languages
884 were not present when we built the driver, we will hit these copies
885 and be given a more meaningful error than "file not used since
886 linking is not done". */
887 {".m", "#Objective-C", 0, 0, 0}, {".mi", "#Objective-C", 0, 0, 0},
888 {".mm", "#Objective-C++", 0, 0, 0}, {".M", "#Objective-C++", 0, 0, 0},
889 {".mii", "#Objective-C++", 0, 0, 0},
890 {".cc", "#C++", 0, 0, 0}, {".cxx", "#C++", 0, 0, 0},
891 {".cpp", "#C++", 0, 0, 0}, {".cp", "#C++", 0, 0, 0},
892 {".c++", "#C++", 0, 0, 0}, {".C", "#C++", 0, 0, 0},
893 {".CPP", "#C++", 0, 0, 0}, {".ii", "#C++", 0, 0, 0},
894 {".ads", "#Ada", 0, 0, 0}, {".adb", "#Ada", 0, 0, 0},
895 {".f", "#Fortran", 0, 0, 0}, {".F", "#Fortran", 0, 0, 0},
896 {".for", "#Fortran", 0, 0, 0}, {".FOR", "#Fortran", 0, 0, 0},
897 {".ftn", "#Fortran", 0, 0, 0}, {".FTN", "#Fortran", 0, 0, 0},
898 {".fpp", "#Fortran", 0, 0, 0}, {".FPP", "#Fortran", 0, 0, 0},
899 {".f90", "#Fortran", 0, 0, 0}, {".F90", "#Fortran", 0, 0, 0},
900 {".f95", "#Fortran", 0, 0, 0}, {".F95", "#Fortran", 0, 0, 0},
901 {".f03", "#Fortran", 0, 0, 0}, {".F03", "#Fortran", 0, 0, 0},
902 {".f08", "#Fortran", 0, 0, 0}, {".F08", "#Fortran", 0, 0, 0},
903 {".r", "#Ratfor", 0, 0, 0},
904 {".p", "#Pascal", 0, 0, 0}, {".pas", "#Pascal", 0, 0, 0},
905 {".java", "#Java", 0, 0, 0}, {".class", "#Java", 0, 0, 0},
906 {".zip", "#Java", 0, 0, 0}, {".jar", "#Java", 0, 0, 0},
907 {".go", "#Go", 0, 1, 0},
908 /* Next come the entries for C. */
909 {".c", "@c", 0, 0, 1},
911 /* cc1 has an integrated ISO C preprocessor. We should invoke the
912 external preprocessor if -save-temps is given. */
913 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\
916 %eGNU C no longer supports -traditional without -E}\
917 %{save-temps*|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
918 %(cpp_options) -o %{save-temps*:%b.i} %{!save-temps*:%g.i} \n\
919 cc1 -fpreprocessed %{save-temps*:%b.i} %{!save-temps*:%g.i} \
921 %{!save-temps*:%{!traditional-cpp:%{!no-integrated-cpp:\
922 cc1 %(cpp_unique_options) %(cc1_options)}}}\
923 %{!fsyntax-only:%(invoke_as)}}}}", 0, 0, 1},
925 "%{!E:%e-E or -x required when input is from standard input}\
926 %(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)", 0, 0, 0},
927 {".h", "@c-header", 0, 0, 0},
929 /* cc1 has an integrated ISO C preprocessor. We should invoke the
930 external preprocessor if -save-temps is given. */
931 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\
933 %{save-temps*|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
934 %(cpp_options) -o %{save-temps*:%b.i} %{!save-temps*:%g.i} \n\
935 cc1 -fpreprocessed %{save-temps*:%b.i} %{!save-temps*:%g.i} \
937 %{!fdump-ada-spec*:-o %g.s %{!o*:--output-pch=%i.gch}\
938 %W{o*:--output-pch=%*}}%V}\
939 %{!save-temps*:%{!traditional-cpp:%{!no-integrated-cpp:\
940 cc1 %(cpp_unique_options) %(cc1_options)\
941 %{!fdump-ada-spec*:-o %g.s %{!o*:--output-pch=%i.gch}\
942 %W{o*:--output-pch=%*}}%V}}}}}}", 0, 0, 0},
943 {".i", "@cpp-output", 0, 0, 0},
945 "%{!M:%{!MM:%{!E:cc1 -fpreprocessed %i %(cc1_options) %{!fsyntax-only:%(invoke_as)}}}}", 0, 1, 0},
946 {".s", "@assembler", 0, 0, 0},
948 "%{!M:%{!MM:%{!E:%{!S:as %(asm_debug) %(asm_options) %i %A }}}}", 0, 0, 0},
949 {".sx", "@assembler-with-cpp", 0, 0, 0},
950 {".S", "@assembler-with-cpp", 0, 0, 0},
951 {"@assembler-with-cpp",
952 #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT
953 "%(trad_capable_cpp) -lang-asm %(cpp_options) -fno-directives-only\
954 %{E|M|MM:%(cpp_debug_options)}\
955 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\
956 as %(asm_debug) %(asm_options) %|.s %A }}}}"
958 "%(trad_capable_cpp) -lang-asm %(cpp_options) -fno-directives-only\
959 %{E|M|MM:%(cpp_debug_options)}\
960 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\
961 as %(asm_debug) %(asm_options) %m.s %A }}}}"
966 /* Mark end of table. */
970 /* Number of elements in default_compilers, not counting the terminator. */
972 static const int n_default_compilers = ARRAY_SIZE (default_compilers) - 1;
974 typedef char *char_p; /* For DEF_VEC_P. */
976 DEF_VEC_ALLOC_P(char_p,heap);
978 /* A vector of options to give to the linker.
979 These options are accumulated by %x,
980 and substituted into the linker command with %X. */
981 static VEC(char_p,heap) *linker_options;
983 /* A vector of options to give to the assembler.
984 These options are accumulated by -Wa,
985 and substituted into the assembler command with %Y. */
986 static VEC(char_p,heap) *assembler_options;
988 /* A vector of options to give to the preprocessor.
989 These options are accumulated by -Wp,
990 and substituted into the preprocessor command with %Z. */
991 static VEC(char_p,heap) *preprocessor_options;
994 skip_whitespace (char *p)
998 /* A fully-blank line is a delimiter in the SPEC file and shouldn't
999 be considered whitespace. */
1000 if (p[0] == '\n' && p[1] == '\n' && p[2] == '\n')
1002 else if (*p == '\n' || *p == ' ' || *p == '\t')
1016 /* Structures to keep track of prefixes to try when looking for files. */
1020 const char *prefix; /* String to prepend to the path. */
1021 struct prefix_list *next; /* Next in linked list. */
1022 int require_machine_suffix; /* Don't use without machine_suffix. */
1023 /* 2 means try both machine_suffix and just_machine_suffix. */
1024 int priority; /* Sort key - priority within list. */
1025 int os_multilib; /* 1 if OS multilib scheme should be used,
1026 0 for GCC multilib scheme. */
1031 struct prefix_list *plist; /* List of prefixes to try */
1032 int max_len; /* Max length of a prefix in PLIST */
1033 const char *name; /* Name of this list (used in config stuff) */
1036 /* List of prefixes to try when looking for executables. */
1038 static struct path_prefix exec_prefixes = { 0, 0, "exec" };
1040 /* List of prefixes to try when looking for startup (crt0) files. */
1042 static struct path_prefix startfile_prefixes = { 0, 0, "startfile" };
1044 /* List of prefixes to try when looking for include files. */
1046 static struct path_prefix include_prefixes = { 0, 0, "include" };
1048 /* Suffix to attach to directories searched for commands.
1049 This looks like `MACHINE/VERSION/'. */
1051 static const char *machine_suffix = 0;
1053 /* Suffix to attach to directories searched for commands.
1054 This is just `MACHINE/'. */
1056 static const char *just_machine_suffix = 0;
1058 /* Adjusted value of GCC_EXEC_PREFIX envvar. */
1060 static const char *gcc_exec_prefix;
1062 /* Adjusted value of standard_libexec_prefix. */
1064 static const char *gcc_libexec_prefix;
1066 /* Default prefixes to attach to command names. */
1068 #ifndef STANDARD_STARTFILE_PREFIX_1
1069 #define STANDARD_STARTFILE_PREFIX_1 "/lib/"
1071 #ifndef STANDARD_STARTFILE_PREFIX_2
1072 #define STANDARD_STARTFILE_PREFIX_2 "/usr/lib/"
1075 #ifdef CROSS_DIRECTORY_STRUCTURE /* Don't use these prefixes for a cross compiler. */
1076 #undef MD_EXEC_PREFIX
1077 #undef MD_STARTFILE_PREFIX
1078 #undef MD_STARTFILE_PREFIX_1
1081 /* If no prefixes defined, use the null string, which will disable them. */
1082 #ifndef MD_EXEC_PREFIX
1083 #define MD_EXEC_PREFIX ""
1085 #ifndef MD_STARTFILE_PREFIX
1086 #define MD_STARTFILE_PREFIX ""
1088 #ifndef MD_STARTFILE_PREFIX_1
1089 #define MD_STARTFILE_PREFIX_1 ""
1092 /* These directories are locations set at configure-time based on the
1093 --prefix option provided to configure. Their initializers are
1094 defined in Makefile.in. These paths are not *directly* used when
1095 gcc_exec_prefix is set because, in that case, we know where the
1096 compiler has been installed, and use paths relative to that
1097 location instead. */
1098 static const char *const standard_exec_prefix = STANDARD_EXEC_PREFIX;
1099 static const char *const standard_libexec_prefix = STANDARD_LIBEXEC_PREFIX;
1100 static const char *const standard_bindir_prefix = STANDARD_BINDIR_PREFIX;
1101 static const char *const standard_startfile_prefix = STANDARD_STARTFILE_PREFIX;
1103 /* For native compilers, these are well-known paths containing
1104 components that may be provided by the system. For cross
1105 compilers, these paths are not used. */
1106 static const char *md_exec_prefix = MD_EXEC_PREFIX;
1107 static const char *md_startfile_prefix = MD_STARTFILE_PREFIX;
1108 static const char *md_startfile_prefix_1 = MD_STARTFILE_PREFIX_1;
1109 static const char *const standard_startfile_prefix_1
1110 = STANDARD_STARTFILE_PREFIX_1;
1111 static const char *const standard_startfile_prefix_2
1112 = STANDARD_STARTFILE_PREFIX_2;
1114 /* A relative path to be used in finding the location of tools
1115 relative to the driver. */
1116 static const char *const tooldir_base_prefix = TOOLDIR_BASE_PREFIX;
1118 /* Subdirectory to use for locating libraries. Set by
1119 set_multilib_dir based on the compilation options. */
1121 static const char *multilib_dir;
1123 /* Subdirectory to use for locating libraries in OS conventions. Set by
1124 set_multilib_dir based on the compilation options. */
1126 static const char *multilib_os_dir;
1128 /* Structure to keep track of the specs that have been defined so far.
1129 These are accessed using %(specname) or %[specname] in a compiler
1134 /* The following 2 fields must be first */
1135 /* to allow EXTRA_SPECS to be initialized */
1136 const char *name; /* name of the spec. */
1137 const char *ptr; /* available ptr if no static pointer */
1139 /* The following fields are not initialized */
1140 /* by EXTRA_SPECS */
1141 const char **ptr_spec; /* pointer to the spec itself. */
1142 struct spec_list *next; /* Next spec in linked list. */
1143 int name_len; /* length of the name */
1144 int alloc_p; /* whether string was allocated */
1147 #define INIT_STATIC_SPEC(NAME,PTR) \
1148 { NAME, NULL, PTR, (struct spec_list *) 0, sizeof (NAME) - 1, 0 }
1150 /* List of statically defined specs. */
1151 static struct spec_list static_specs[] =
1153 INIT_STATIC_SPEC ("asm", &asm_spec),
1154 INIT_STATIC_SPEC ("asm_debug", &asm_debug),
1155 INIT_STATIC_SPEC ("asm_final", &asm_final_spec),
1156 INIT_STATIC_SPEC ("asm_options", &asm_options),
1157 INIT_STATIC_SPEC ("invoke_as", &invoke_as),
1158 INIT_STATIC_SPEC ("cpp", &cpp_spec),
1159 INIT_STATIC_SPEC ("cpp_options", &cpp_options),
1160 INIT_STATIC_SPEC ("cpp_debug_options", &cpp_debug_options),
1161 INIT_STATIC_SPEC ("cpp_unique_options", &cpp_unique_options),
1162 INIT_STATIC_SPEC ("trad_capable_cpp", &trad_capable_cpp),
1163 INIT_STATIC_SPEC ("cc1", &cc1_spec),
1164 INIT_STATIC_SPEC ("cc1_options", &cc1_options),
1165 INIT_STATIC_SPEC ("cc1plus", &cc1plus_spec),
1166 INIT_STATIC_SPEC ("link_gcc_c_sequence", &link_gcc_c_sequence_spec),
1167 INIT_STATIC_SPEC ("link_ssp", &link_ssp_spec),
1168 INIT_STATIC_SPEC ("endfile", &endfile_spec),
1169 INIT_STATIC_SPEC ("link", &link_spec),
1170 INIT_STATIC_SPEC ("lib", &lib_spec),
1171 INIT_STATIC_SPEC ("mfwrap", &mfwrap_spec),
1172 INIT_STATIC_SPEC ("mflib", &mflib_spec),
1173 INIT_STATIC_SPEC ("link_gomp", &link_gomp_spec),
1174 INIT_STATIC_SPEC ("libgcc", &libgcc_spec),
1175 INIT_STATIC_SPEC ("startfile", &startfile_spec),
1176 INIT_STATIC_SPEC ("cross_compile", &cross_compile),
1177 INIT_STATIC_SPEC ("version", &compiler_version),
1178 INIT_STATIC_SPEC ("multilib", &multilib_select),
1179 INIT_STATIC_SPEC ("multilib_defaults", &multilib_defaults),
1180 INIT_STATIC_SPEC ("multilib_extra", &multilib_extra),
1181 INIT_STATIC_SPEC ("multilib_matches", &multilib_matches),
1182 INIT_STATIC_SPEC ("multilib_exclusions", &multilib_exclusions),
1183 INIT_STATIC_SPEC ("multilib_options", &multilib_options),
1184 INIT_STATIC_SPEC ("linker", &linker_name_spec),
1185 INIT_STATIC_SPEC ("linker_plugin_file", &linker_plugin_file_spec),
1186 INIT_STATIC_SPEC ("lto_wrapper", <o_wrapper_spec),
1187 INIT_STATIC_SPEC ("lto_gcc", <o_gcc_spec),
1188 INIT_STATIC_SPEC ("link_libgcc", &link_libgcc_spec),
1189 INIT_STATIC_SPEC ("md_exec_prefix", &md_exec_prefix),
1190 INIT_STATIC_SPEC ("md_startfile_prefix", &md_startfile_prefix),
1191 INIT_STATIC_SPEC ("md_startfile_prefix_1", &md_startfile_prefix_1),
1192 INIT_STATIC_SPEC ("startfile_prefix_spec", &startfile_prefix_spec),
1193 INIT_STATIC_SPEC ("sysroot_spec", &sysroot_spec),
1194 INIT_STATIC_SPEC ("sysroot_suffix_spec", &sysroot_suffix_spec),
1195 INIT_STATIC_SPEC ("sysroot_hdrs_suffix_spec", &sysroot_hdrs_suffix_spec),
1198 #ifdef EXTRA_SPECS /* additional specs needed */
1199 /* Structure to keep track of just the first two args of a spec_list.
1200 That is all that the EXTRA_SPECS macro gives us. */
1203 const char *const name;
1204 const char *const ptr;
1207 static const struct spec_list_1 extra_specs_1[] = { EXTRA_SPECS };
1208 static struct spec_list *extra_specs = (struct spec_list *) 0;
1211 /* List of dynamically allocates specs that have been defined so far. */
1213 static struct spec_list *specs = (struct spec_list *) 0;
1215 /* List of static spec functions. */
1217 static const struct spec_function static_spec_functions[] =
1219 { "getenv", getenv_spec_function },
1220 { "if-exists", if_exists_spec_function },
1221 { "if-exists-else", if_exists_else_spec_function },
1222 { "replace-outfile", replace_outfile_spec_function },
1223 { "remove-outfile", remove_outfile_spec_function },
1224 { "version-compare", version_compare_spec_function },
1225 { "include", include_spec_function },
1226 { "find-file", find_file_spec_function },
1227 { "find-plugindir", find_plugindir_spec_function },
1228 { "print-asm-header", print_asm_header_spec_function },
1229 { "compare-debug-dump-opt", compare_debug_dump_opt_spec_function },
1230 { "compare-debug-self-opt", compare_debug_self_opt_spec_function },
1231 { "compare-debug-auxbase-opt", compare_debug_auxbase_opt_spec_function },
1232 { "pass-through-libs", pass_through_libs_spec_func },
1233 #ifdef EXTRA_SPEC_FUNCTIONS
1234 EXTRA_SPEC_FUNCTIONS
1239 static int processing_spec_function;
1241 /* Add appropriate libgcc specs to OBSTACK, taking into account
1242 various permutations of -shared-libgcc, -shared, and such. */
1244 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
1246 #ifndef USE_LD_AS_NEEDED
1247 #define USE_LD_AS_NEEDED 0
1251 init_gcc_specs (struct obstack *obstack, const char *shared_name,
1252 const char *static_name, const char *eh_name)
1256 buf = concat ("%{static|static-libgcc:", static_name, " ", eh_name, "}"
1257 "%{!static:%{!static-libgcc:"
1258 #if USE_LD_AS_NEEDED
1259 "%{!shared-libgcc:",
1260 static_name, " --as-needed ", shared_name, " --no-as-needed"
1263 shared_name, "%{!shared: ", static_name, "}"
1267 "%{!shared-libgcc:", static_name, " ", eh_name, "}"
1268 "%{shared-libgcc:", shared_name, " ", static_name, "}"
1272 "%{shared-libgcc:", shared_name, "}"
1273 "%{!shared-libgcc:", static_name, "}"
1276 "%{shared:", shared_name, "}"
1281 obstack_grow (obstack, buf, strlen (buf));
1284 #endif /* ENABLE_SHARED_LIBGCC */
1286 /* Initialize the specs lookup routines. */
1291 struct spec_list *next = (struct spec_list *) 0;
1292 struct spec_list *sl = (struct spec_list *) 0;
1296 return; /* Already initialized. */
1299 fnotice (stderr, "Using built-in specs.\n");
1302 extra_specs = XCNEWVEC (struct spec_list, ARRAY_SIZE (extra_specs_1));
1304 for (i = ARRAY_SIZE (extra_specs_1) - 1; i >= 0; i--)
1306 sl = &extra_specs[i];
1307 sl->name = extra_specs_1[i].name;
1308 sl->ptr = extra_specs_1[i].ptr;
1310 sl->name_len = strlen (sl->name);
1311 sl->ptr_spec = &sl->ptr;
1316 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--)
1318 sl = &static_specs[i];
1323 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
1324 /* ??? If neither -shared-libgcc nor --static-libgcc was
1325 seen, then we should be making an educated guess. Some proposed
1326 heuristics for ELF include:
1328 (1) If "-Wl,--export-dynamic", then it's a fair bet that the
1329 program will be doing dynamic loading, which will likely
1330 need the shared libgcc.
1332 (2) If "-ldl", then it's also a fair bet that we're doing
1335 (3) For each ET_DYN we're linking against (either through -lfoo
1336 or /some/path/foo.so), check to see whether it or one of
1337 its dependencies depends on a shared libgcc.
1341 If the runtime is fixed to look for program headers instead
1342 of calling __register_frame_info at all, for each object,
1343 use the shared libgcc if any EH symbol referenced.
1345 If crtstuff is fixed to not invoke __register_frame_info
1346 automatically, for each object, use the shared libgcc if
1347 any non-empty unwind section found.
1349 Doing any of this probably requires invoking an external program to
1350 do the actual object file scanning. */
1352 const char *p = libgcc_spec;
1355 /* Transform the extant libgcc_spec into one that uses the shared libgcc
1356 when given the proper command line arguments. */
1359 if (in_sep && *p == '-' && strncmp (p, "-lgcc", 5) == 0)
1361 init_gcc_specs (&obstack,
1363 #ifdef USE_LIBUNWIND_EXCEPTIONS
1369 #ifdef USE_LIBUNWIND_EXCEPTIONS
1370 # ifdef HAVE_LD_STATIC_DYNAMIC
1371 " %{!static:-Bstatic} -lunwind %{!static:-Bdynamic}"
1381 else if (in_sep && *p == 'l' && strncmp (p, "libgcc.a%s", 10) == 0)
1383 /* Ug. We don't know shared library extensions. Hope that
1384 systems that use this form don't do shared libraries. */
1385 init_gcc_specs (&obstack,
1389 #ifdef USE_LIBUNWIND_EXCEPTIONS
1398 obstack_1grow (&obstack, *p);
1399 in_sep = (*p == ' ');
1404 obstack_1grow (&obstack, '\0');
1405 libgcc_spec = XOBFINISH (&obstack, const char *);
1408 #ifdef USE_AS_TRADITIONAL_FORMAT
1409 /* Prepend "--traditional-format" to whatever asm_spec we had before. */
1411 static const char tf[] = "--traditional-format ";
1412 obstack_grow (&obstack, tf, sizeof(tf) - 1);
1413 obstack_grow0 (&obstack, asm_spec, strlen (asm_spec));
1414 asm_spec = XOBFINISH (&obstack, const char *);
1418 #if defined LINK_EH_SPEC || defined LINK_BUILDID_SPEC
1419 # ifdef LINK_BUILDID_SPEC
1420 /* Prepend LINK_BUILDID_SPEC to whatever link_spec we had before. */
1421 obstack_grow (&obstack, LINK_BUILDID_SPEC, sizeof(LINK_BUILDID_SPEC) - 1);
1423 # ifdef LINK_EH_SPEC
1424 /* Prepend LINK_EH_SPEC to whatever link_spec we had before. */
1425 obstack_grow (&obstack, LINK_EH_SPEC, sizeof(LINK_EH_SPEC) - 1);
1427 obstack_grow0 (&obstack, link_spec, strlen (link_spec));
1428 link_spec = XOBFINISH (&obstack, const char *);
1434 /* Change the value of spec NAME to SPEC. If SPEC is empty, then the spec is
1435 removed; If the spec starts with a + then SPEC is added to the end of the
1439 set_spec (const char *name, const char *spec)
1441 struct spec_list *sl;
1442 const char *old_spec;
1443 int name_len = strlen (name);
1446 /* If this is the first call, initialize the statically allocated specs. */
1449 struct spec_list *next = (struct spec_list *) 0;
1450 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--)
1452 sl = &static_specs[i];
1459 /* See if the spec already exists. */
1460 for (sl = specs; sl; sl = sl->next)
1461 if (name_len == sl->name_len && !strcmp (sl->name, name))
1466 /* Not found - make it. */
1467 sl = XNEW (struct spec_list);
1468 sl->name = xstrdup (name);
1469 sl->name_len = name_len;
1470 sl->ptr_spec = &sl->ptr;
1472 *(sl->ptr_spec) = "";
1477 old_spec = *(sl->ptr_spec);
1478 *(sl->ptr_spec) = ((spec[0] == '+' && ISSPACE ((unsigned char)spec[1]))
1479 ? concat (old_spec, spec + 1, NULL)
1484 fnotice (stderr, "Setting spec %s to '%s'\n\n", name, *(sl->ptr_spec));
1487 /* Free the old spec. */
1488 if (old_spec && sl->alloc_p)
1489 free (CONST_CAST(char *, old_spec));
1494 /* Accumulate a command (program name and args), and run it. */
1496 typedef const char *const_char_p; /* For DEF_VEC_P. */
1497 DEF_VEC_P(const_char_p);
1498 DEF_VEC_ALLOC_P(const_char_p,heap);
1500 /* Vector of pointers to arguments in the current line of specifications. */
1502 static VEC(const_char_p,heap) *argbuf;
1504 /* Position in the argbuf vector containing the name of the output file
1505 (the value associated with the "-o" flag). */
1507 static int have_o_argbuf_index = 0;
1509 /* Were the options -c, -S or -E passed. */
1510 static int have_c = 0;
1512 /* Was the option -o passed. */
1513 static int have_o = 0;
1515 /* This is the list of suffixes and codes (%g/%u/%U/%j) and the associated
1516 temp file. If the HOST_BIT_BUCKET is used for %j, no entry is made for
1519 static struct temp_name {
1520 const char *suffix; /* suffix associated with the code. */
1521 int length; /* strlen (suffix). */
1522 int unique; /* Indicates whether %g or %u/%U was used. */
1523 const char *filename; /* associated filename. */
1524 int filename_length; /* strlen (filename). */
1525 struct temp_name *next;
1528 /* Number of commands executed so far. */
1530 static int execution_count;
1532 /* Number of commands that exited with a signal. */
1534 static int signal_count;
1536 /* Allocate the argument vector. */
1541 argbuf = VEC_alloc (const_char_p, heap, 10);
1544 /* Clear out the vector of arguments (after a command is executed). */
1549 VEC_truncate (const_char_p, argbuf, 0);
1552 /* Add one argument to the vector at the end.
1553 This is done when a space is seen or at the end of the line.
1554 If DELETE_ALWAYS is nonzero, the arg is a filename
1555 and the file should be deleted eventually.
1556 If DELETE_FAILURE is nonzero, the arg is a filename
1557 and the file should be deleted if this compilation fails. */
1560 store_arg (const char *arg, int delete_always, int delete_failure)
1562 VEC_safe_push (const_char_p, heap, argbuf, arg);
1564 if (strcmp (arg, "-o") == 0)
1565 have_o_argbuf_index = VEC_length (const_char_p, argbuf);
1566 if (delete_always || delete_failure)
1569 /* If the temporary file we should delete is specified as
1570 part of a joined argument extract the filename. */
1572 && (p = strrchr (arg, '=')))
1574 record_temp_file (arg, delete_always, delete_failure);
1578 /* Load specs from a file name named FILENAME, replacing occurrences of
1579 various different types of line-endings, \r\n, \n\r and just \r, with
1583 load_specs (const char *filename)
1587 struct stat statbuf;
1594 fnotice (stderr, "Reading specs from %s\n", filename);
1596 /* Open and stat the file. */
1597 desc = open (filename, O_RDONLY, 0);
1599 pfatal_with_name (filename);
1600 if (stat (filename, &statbuf) < 0)
1601 pfatal_with_name (filename);
1603 /* Read contents of file into BUFFER. */
1604 buffer = XNEWVEC (char, statbuf.st_size + 1);
1605 readlen = read (desc, buffer, (unsigned) statbuf.st_size);
1607 pfatal_with_name (filename);
1608 buffer[readlen] = 0;
1611 specs = XNEWVEC (char, readlen + 1);
1613 for (buffer_p = buffer; buffer_p && *buffer_p; buffer_p++)
1619 if (buffer_p > buffer && *(buffer_p - 1) == '\n') /* \n\r */
1621 else if (*(buffer_p + 1) == '\n') /* \r\n */
1635 /* Read compilation specs from a file named FILENAME,
1636 replacing the default ones.
1638 A suffix which starts with `*' is a definition for
1639 one of the machine-specific sub-specs. The "suffix" should be
1640 *asm, *cc1, *cpp, *link, *startfile, etc.
1641 The corresponding spec is stored in asm_spec, etc.,
1642 rather than in the `compilers' vector.
1644 Anything invalid in the file is a fatal error. */
1647 read_specs (const char *filename, int main_p)
1652 buffer = load_specs (filename);
1654 /* Scan BUFFER for specs, putting them in the vector. */
1660 char *in, *out, *p1, *p2, *p3;
1662 /* Advance P in BUFFER to the next nonblank nocomment line. */
1663 p = skip_whitespace (p);
1667 /* Is this a special command that starts with '%'? */
1668 /* Don't allow this for the main specs file, since it would
1669 encourage people to overwrite it. */
1670 if (*p == '%' && !main_p)
1673 while (*p && *p != '\n')
1679 if (!strncmp (p1, "%include", sizeof ("%include") - 1)
1680 && (p1[sizeof "%include" - 1] == ' '
1681 || p1[sizeof "%include" - 1] == '\t'))
1685 p1 += sizeof ("%include");
1686 while (*p1 == ' ' || *p1 == '\t')
1689 if (*p1++ != '<' || p[-2] != '>')
1690 fatal_error ("specs %%include syntax malformed after "
1692 (long) (p1 - buffer + 1));
1695 new_filename = find_a_file (&startfile_prefixes, p1, R_OK, true);
1696 read_specs (new_filename ? new_filename : p1, FALSE);
1699 else if (!strncmp (p1, "%include_noerr", sizeof "%include_noerr" - 1)
1700 && (p1[sizeof "%include_noerr" - 1] == ' '
1701 || p1[sizeof "%include_noerr" - 1] == '\t'))
1705 p1 += sizeof "%include_noerr";
1706 while (*p1 == ' ' || *p1 == '\t')
1709 if (*p1++ != '<' || p[-2] != '>')
1710 fatal_error ("specs %%include syntax malformed after "
1712 (long) (p1 - buffer + 1));
1715 new_filename = find_a_file (&startfile_prefixes, p1, R_OK, true);
1717 read_specs (new_filename, FALSE);
1718 else if (verbose_flag)
1719 fnotice (stderr, "could not find specs file %s\n", p1);
1722 else if (!strncmp (p1, "%rename", sizeof "%rename" - 1)
1723 && (p1[sizeof "%rename" - 1] == ' '
1724 || p1[sizeof "%rename" - 1] == '\t'))
1727 struct spec_list *sl;
1728 struct spec_list *newsl;
1730 /* Get original name. */
1731 p1 += sizeof "%rename";
1732 while (*p1 == ' ' || *p1 == '\t')
1735 if (! ISALPHA ((unsigned char) *p1))
1736 fatal_error ("specs %%rename syntax malformed after "
1738 (long) (p1 - buffer));
1741 while (*p2 && !ISSPACE ((unsigned char) *p2))
1744 if (*p2 != ' ' && *p2 != '\t')
1745 fatal_error ("specs %%rename syntax malformed after "
1747 (long) (p2 - buffer));
1751 while (*p2 == ' ' || *p2 == '\t')
1754 if (! ISALPHA ((unsigned char) *p2))
1755 fatal_error ("specs %%rename syntax malformed after "
1757 (long) (p2 - buffer));
1759 /* Get new spec name. */
1761 while (*p3 && !ISSPACE ((unsigned char) *p3))
1765 fatal_error ("specs %%rename syntax malformed after "
1767 (long) (p3 - buffer));
1770 for (sl = specs; sl; sl = sl->next)
1771 if (name_len == sl->name_len && !strcmp (sl->name, p1))
1775 fatal_error ("specs %s spec was not found to be renamed", p1);
1777 if (strcmp (p1, p2) == 0)
1780 for (newsl = specs; newsl; newsl = newsl->next)
1781 if (strcmp (newsl->name, p2) == 0)
1782 fatal_error ("%s: attempt to rename spec %qs to "
1783 "already defined spec %qs",
1788 fnotice (stderr, "rename spec %s to %s\n", p1, p2);
1790 fnotice (stderr, "spec is '%s'\n\n", *(sl->ptr_spec));
1794 set_spec (p2, *(sl->ptr_spec));
1796 free (CONST_CAST (char *, *(sl->ptr_spec)));
1798 *(sl->ptr_spec) = "";
1803 fatal_error ("specs unknown %% command after %ld characters",
1804 (long) (p1 - buffer));
1807 /* Find the colon that should end the suffix. */
1809 while (*p1 && *p1 != ':' && *p1 != '\n')
1812 /* The colon shouldn't be missing. */
1814 fatal_error ("specs file malformed after %ld characters",
1815 (long) (p1 - buffer));
1817 /* Skip back over trailing whitespace. */
1819 while (p2 > buffer && (p2[-1] == ' ' || p2[-1] == '\t'))
1822 /* Copy the suffix to a string. */
1823 suffix = save_string (p, p2 - p);
1824 /* Find the next line. */
1825 p = skip_whitespace (p1 + 1);
1827 fatal_error ("specs file malformed after %ld characters",
1828 (long) (p - buffer));
1831 /* Find next blank line or end of string. */
1832 while (*p1 && !(*p1 == '\n' && (p1[1] == '\n' || p1[1] == '\0')))
1835 /* Specs end at the blank line and do not include the newline. */
1836 spec = save_string (p, p1 - p);
1839 /* Delete backslash-newline sequences from the spec. */
1844 if (in[0] == '\\' && in[1] == '\n')
1846 else if (in[0] == '#')
1847 while (*in && *in != '\n')
1855 if (suffix[0] == '*')
1857 if (! strcmp (suffix, "*link_command"))
1858 link_command_spec = spec;
1860 set_spec (suffix + 1, spec);
1864 /* Add this pair to the vector. */
1866 = XRESIZEVEC (struct compiler, compilers, n_compilers + 2);
1868 compilers[n_compilers].suffix = suffix;
1869 compilers[n_compilers].spec = spec;
1871 memset (&compilers[n_compilers], 0, sizeof compilers[n_compilers]);
1875 link_command_spec = spec;
1878 if (link_command_spec == 0)
1879 fatal_error ("spec file has no spec for linking");
1882 /* Record the names of temporary files we tell compilers to write,
1883 and delete them at the end of the run. */
1885 /* This is the common prefix we use to make temp file names.
1886 It is chosen once for each run of this program.
1887 It is substituted into a spec by %g or %j.
1888 Thus, all temp file names contain this prefix.
1889 In practice, all temp file names start with this prefix.
1891 This prefix comes from the envvar TMPDIR if it is defined;
1892 otherwise, from the P_tmpdir macro if that is defined;
1893 otherwise, in /usr/tmp or /tmp;
1894 or finally the current directory if all else fails. */
1896 static const char *temp_filename;
1898 /* Length of the prefix. */
1900 static int temp_filename_length;
1902 /* Define the list of temporary files to delete. */
1907 struct temp_file *next;
1910 /* Queue of files to delete on success or failure of compilation. */
1911 static struct temp_file *always_delete_queue;
1912 /* Queue of files to delete on failure of compilation. */
1913 static struct temp_file *failure_delete_queue;
1915 /* Record FILENAME as a file to be deleted automatically.
1916 ALWAYS_DELETE nonzero means delete it if all compilation succeeds;
1917 otherwise delete it in any case.
1918 FAIL_DELETE nonzero means delete it if a compilation step fails;
1919 otherwise delete it in any case. */
1922 record_temp_file (const char *filename, int always_delete, int fail_delete)
1924 char *const name = xstrdup (filename);
1928 struct temp_file *temp;
1929 for (temp = always_delete_queue; temp; temp = temp->next)
1930 if (! strcmp (name, temp->name))
1933 temp = XNEW (struct temp_file);
1934 temp->next = always_delete_queue;
1936 always_delete_queue = temp;
1943 struct temp_file *temp;
1944 for (temp = failure_delete_queue; temp; temp = temp->next)
1945 if (! strcmp (name, temp->name))
1948 temp = XNEW (struct temp_file);
1949 temp->next = failure_delete_queue;
1951 failure_delete_queue = temp;
1957 /* Delete all the temporary files whose names we previously recorded. */
1959 #ifndef DELETE_IF_ORDINARY
1960 #define DELETE_IF_ORDINARY(NAME,ST,VERBOSE_FLAG) \
1963 if (stat (NAME, &ST) >= 0 && S_ISREG (ST.st_mode)) \
1964 if (unlink (NAME) < 0) \
1966 perror_with_name (NAME); \
1971 delete_if_ordinary (const char *name)
1977 printf ("Delete %s? (y or n) ", name);
1981 while ((c = getchar ()) != '\n' && c != EOF)
1984 if (i == 'y' || i == 'Y')
1986 DELETE_IF_ORDINARY (name, st, verbose_flag);
1990 delete_temp_files (void)
1992 struct temp_file *temp;
1994 for (temp = always_delete_queue; temp; temp = temp->next)
1995 delete_if_ordinary (temp->name);
1996 always_delete_queue = 0;
1999 /* Delete all the files to be deleted on error. */
2002 delete_failure_queue (void)
2004 struct temp_file *temp;
2006 for (temp = failure_delete_queue; temp; temp = temp->next)
2007 delete_if_ordinary (temp->name);
2011 clear_failure_queue (void)
2013 failure_delete_queue = 0;
2016 /* Call CALLBACK for each path in PATHS, breaking out early if CALLBACK
2018 If DO_MULTI is true iterate over the paths twice, first with multilib
2019 suffix then without, otherwise iterate over the paths once without
2020 adding a multilib suffix. When DO_MULTI is true, some attempt is made
2021 to avoid visiting the same path twice, but we could do better. For
2022 instance, /usr/lib/../lib is considered different from /usr/lib.
2023 At least EXTRA_SPACE chars past the end of the path passed to
2024 CALLBACK are available for use by the callback.
2025 CALLBACK_INFO allows extra parameters to be passed to CALLBACK.
2027 Returns the value returned by CALLBACK. */
2030 for_each_path (const struct path_prefix *paths,
2033 void *(*callback) (char *, void *),
2034 void *callback_info)
2036 struct prefix_list *pl;
2037 const char *multi_dir = NULL;
2038 const char *multi_os_dir = NULL;
2039 const char *multi_suffix;
2040 const char *just_multi_suffix;
2043 bool skip_multi_dir = false;
2044 bool skip_multi_os_dir = false;
2046 multi_suffix = machine_suffix;
2047 just_multi_suffix = just_machine_suffix;
2048 if (do_multi && multilib_dir && strcmp (multilib_dir, ".") != 0)
2050 multi_dir = concat (multilib_dir, dir_separator_str, NULL);
2051 multi_suffix = concat (multi_suffix, multi_dir, NULL);
2052 just_multi_suffix = concat (just_multi_suffix, multi_dir, NULL);
2054 if (do_multi && multilib_os_dir && strcmp (multilib_os_dir, ".") != 0)
2055 multi_os_dir = concat (multilib_os_dir, dir_separator_str, NULL);
2059 size_t multi_dir_len = 0;
2060 size_t multi_os_dir_len = 0;
2062 size_t just_suffix_len;
2066 multi_dir_len = strlen (multi_dir);
2068 multi_os_dir_len = strlen (multi_os_dir);
2069 suffix_len = strlen (multi_suffix);
2070 just_suffix_len = strlen (just_multi_suffix);
2074 len = paths->max_len + extra_space + 1;
2075 if (suffix_len > multi_os_dir_len)
2078 len += multi_os_dir_len;
2079 path = XNEWVEC (char, len);
2082 for (pl = paths->plist; pl != 0; pl = pl->next)
2084 len = strlen (pl->prefix);
2085 memcpy (path, pl->prefix, len);
2087 /* Look first in MACHINE/VERSION subdirectory. */
2088 if (!skip_multi_dir)
2090 memcpy (path + len, multi_suffix, suffix_len + 1);
2091 ret = callback (path, callback_info);
2096 /* Some paths are tried with just the machine (ie. target)
2097 subdir. This is used for finding as, ld, etc. */
2099 && pl->require_machine_suffix == 2)
2101 memcpy (path + len, just_multi_suffix, just_suffix_len + 1);
2102 ret = callback (path, callback_info);
2107 /* Now try the base path. */
2108 if (!pl->require_machine_suffix
2109 && !(pl->os_multilib ? skip_multi_os_dir : skip_multi_dir))
2111 const char *this_multi;
2112 size_t this_multi_len;
2114 if (pl->os_multilib)
2116 this_multi = multi_os_dir;
2117 this_multi_len = multi_os_dir_len;
2121 this_multi = multi_dir;
2122 this_multi_len = multi_dir_len;
2126 memcpy (path + len, this_multi, this_multi_len + 1);
2130 ret = callback (path, callback_info);
2138 if (multi_dir == NULL && multi_os_dir == NULL)
2141 /* Run through the paths again, this time without multilibs.
2142 Don't repeat any we have already seen. */
2145 free (CONST_CAST (char *, multi_dir));
2147 free (CONST_CAST (char *, multi_suffix));
2148 multi_suffix = machine_suffix;
2149 free (CONST_CAST (char *, just_multi_suffix));
2150 just_multi_suffix = just_machine_suffix;
2153 skip_multi_dir = true;
2156 free (CONST_CAST (char *, multi_os_dir));
2157 multi_os_dir = NULL;
2160 skip_multi_os_dir = true;
2165 free (CONST_CAST (char *, multi_dir));
2166 free (CONST_CAST (char *, multi_suffix));
2167 free (CONST_CAST (char *, just_multi_suffix));
2170 free (CONST_CAST (char *, multi_os_dir));
2176 /* Callback for build_search_list. Adds path to obstack being built. */
2178 struct add_to_obstack_info {
2185 add_to_obstack (char *path, void *data)
2187 struct add_to_obstack_info *info = (struct add_to_obstack_info *) data;
2189 if (info->check_dir && !is_directory (path, false))
2192 if (!info->first_time)
2193 obstack_1grow (info->ob, PATH_SEPARATOR);
2195 obstack_grow (info->ob, path, strlen (path));
2197 info->first_time = false;
2201 /* Add or change the value of an environment variable, outputting the
2202 change to standard error if in verbose mode. */
2204 xputenv (const char *string)
2207 fnotice (stderr, "%s\n", string);
2208 putenv (CONST_CAST (char *, string));
2211 /* Build a list of search directories from PATHS.
2212 PREFIX is a string to prepend to the list.
2213 If CHECK_DIR_P is true we ensure the directory exists.
2214 If DO_MULTI is true, multilib paths are output first, then
2216 This is used mostly by putenv_from_prefixes so we use `collect_obstack'.
2217 It is also used by the --print-search-dirs flag. */
2220 build_search_list (const struct path_prefix *paths, const char *prefix,
2221 bool check_dir, bool do_multi)
2223 struct add_to_obstack_info info;
2225 info.ob = &collect_obstack;
2226 info.check_dir = check_dir;
2227 info.first_time = true;
2229 obstack_grow (&collect_obstack, prefix, strlen (prefix));
2230 obstack_1grow (&collect_obstack, '=');
2232 for_each_path (paths, do_multi, 0, add_to_obstack, &info);
2234 obstack_1grow (&collect_obstack, '\0');
2235 return XOBFINISH (&collect_obstack, char *);
2238 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
2242 putenv_from_prefixes (const struct path_prefix *paths, const char *env_var,
2245 xputenv (build_search_list (paths, env_var, true, do_multi));
2248 /* Check whether NAME can be accessed in MODE. This is like access,
2249 except that it never considers directories to be executable. */
2252 access_check (const char *name, int mode)
2258 if (stat (name, &st) < 0
2259 || S_ISDIR (st.st_mode))
2263 return access (name, mode);
2266 /* Callback for find_a_file. Appends the file name to the directory
2267 path. If the resulting file exists in the right mode, return the
2268 full pathname to the file. */
2270 struct file_at_path_info {
2279 file_at_path (char *path, void *data)
2281 struct file_at_path_info *info = (struct file_at_path_info *) data;
2282 size_t len = strlen (path);
2284 memcpy (path + len, info->name, info->name_len);
2285 len += info->name_len;
2287 /* Some systems have a suffix for executable files.
2288 So try appending that first. */
2289 if (info->suffix_len)
2291 memcpy (path + len, info->suffix, info->suffix_len + 1);
2292 if (access_check (path, info->mode) == 0)
2297 if (access_check (path, info->mode) == 0)
2303 /* Search for NAME using the prefix list PREFIXES. MODE is passed to
2304 access to check permissions. If DO_MULTI is true, search multilib
2305 paths then non-multilib paths, otherwise do not search multilib paths.
2306 Return 0 if not found, otherwise return its name, allocated with malloc. */
2309 find_a_file (const struct path_prefix *pprefix, const char *name, int mode,
2312 struct file_at_path_info info;
2314 #ifdef DEFAULT_ASSEMBLER
2315 if (! strcmp (name, "as") && access (DEFAULT_ASSEMBLER, mode) == 0)
2316 return xstrdup (DEFAULT_ASSEMBLER);
2319 #ifdef DEFAULT_LINKER
2320 if (! strcmp(name, "ld") && access (DEFAULT_LINKER, mode) == 0)
2321 return xstrdup (DEFAULT_LINKER);
2324 /* Determine the filename to execute (special case for absolute paths). */
2326 if (IS_ABSOLUTE_PATH (name))
2328 if (access (name, mode) == 0)
2329 return xstrdup (name);
2335 info.suffix = (mode & X_OK) != 0 ? HOST_EXECUTABLE_SUFFIX : "";
2336 info.name_len = strlen (info.name);
2337 info.suffix_len = strlen (info.suffix);
2340 return (char*) for_each_path (pprefix, do_multi,
2341 info.name_len + info.suffix_len,
2342 file_at_path, &info);
2345 /* Ranking of prefixes in the sort list. -B prefixes are put before
2348 enum path_prefix_priority
2350 PREFIX_PRIORITY_B_OPT,
2351 PREFIX_PRIORITY_LAST
2354 /* Add an entry for PREFIX in PLIST. The PLIST is kept in ascending
2355 order according to PRIORITY. Within each PRIORITY, new entries are
2358 If WARN is nonzero, we will warn if no file is found
2359 through this prefix. WARN should point to an int
2360 which will be set to 1 if this entry is used.
2362 COMPONENT is the value to be passed to update_path.
2364 REQUIRE_MACHINE_SUFFIX is 1 if this prefix can't be used without
2365 the complete value of machine_suffix.
2366 2 means try both machine_suffix and just_machine_suffix. */
2369 add_prefix (struct path_prefix *pprefix, const char *prefix,
2370 const char *component, /* enum prefix_priority */ int priority,
2371 int require_machine_suffix, int os_multilib)
2373 struct prefix_list *pl, **prev;
2376 for (prev = &pprefix->plist;
2377 (*prev) != NULL && (*prev)->priority <= priority;
2378 prev = &(*prev)->next)
2381 /* Keep track of the longest prefix. */
2383 prefix = update_path (prefix, component);
2384 len = strlen (prefix);
2385 if (len > pprefix->max_len)
2386 pprefix->max_len = len;
2388 pl = XNEW (struct prefix_list);
2389 pl->prefix = prefix;
2390 pl->require_machine_suffix = require_machine_suffix;
2391 pl->priority = priority;
2392 pl->os_multilib = os_multilib;
2394 /* Insert after PREV. */
2399 /* Same as add_prefix, but prepending target_system_root to prefix. */
2400 /* The target_system_root prefix has been relocated by gcc_exec_prefix. */
2402 add_sysrooted_prefix (struct path_prefix *pprefix, const char *prefix,
2403 const char *component,
2404 /* enum prefix_priority */ int priority,
2405 int require_machine_suffix, int os_multilib)
2407 if (!IS_ABSOLUTE_PATH (prefix))
2408 fatal_error ("system path %qs is not absolute", prefix);
2410 if (target_system_root)
2412 if (target_sysroot_suffix)
2413 prefix = concat (target_sysroot_suffix, prefix, NULL);
2414 prefix = concat (target_system_root, prefix, NULL);
2416 /* We have to override this because GCC's notion of sysroot
2417 moves along with GCC. */
2421 add_prefix (pprefix, prefix, component, priority,
2422 require_machine_suffix, os_multilib);
2425 /* Execute the command specified by the arguments on the current line of spec.
2426 When using pipes, this includes several piped-together commands
2427 with `|' between them.
2429 Return 0 if successful, -1 if failed. */
2435 int n_commands; /* # of command. */
2437 struct pex_obj *pex;
2440 const char *prog; /* program name. */
2441 const char **argv; /* vector of args. */
2445 struct command *commands; /* each command buffer with above info. */
2447 gcc_assert (!processing_spec_function);
2451 string = find_a_file (&exec_prefixes,
2452 VEC_index (const_char_p, argbuf, 0), X_OK, false);
2454 VEC_replace (const_char_p, argbuf, 0, string);
2455 insert_wrapper (wrapper_string);
2458 /* Count # of piped commands. */
2459 for (n_commands = 1, i = 0; VEC_iterate (const_char_p, argbuf, i, arg); i++)
2460 if (strcmp (arg, "|") == 0)
2463 /* Get storage for each command. */
2464 commands = (struct command *) alloca (n_commands * sizeof (struct command));
2466 /* Split argbuf into its separate piped processes,
2467 and record info about each one.
2468 Also search for the programs that are to be run. */
2470 VEC_safe_push (const_char_p, heap, argbuf, 0);
2472 commands[0].prog = VEC_index (const_char_p, argbuf, 0); /* first command. */
2473 commands[0].argv = VEC_address (const_char_p, argbuf);
2475 if (!wrapper_string)
2477 string = find_a_file (&exec_prefixes, commands[0].prog, X_OK, false);
2478 commands[0].argv[0] = (string) ? string : commands[0].argv[0];
2481 for (n_commands = 1, i = 0; VEC_iterate (const_char_p, argbuf, i, arg); i++)
2482 if (arg && strcmp (arg, "|") == 0)
2483 { /* each command. */
2484 #if defined (__MSDOS__) || defined (OS2) || defined (VMS)
2485 fatal_error ("-pipe not supported");
2487 VEC_replace (const_char_p, argbuf, i, 0); /* Termination of
2489 commands[n_commands].prog = VEC_index (const_char_p, argbuf, i + 1);
2490 commands[n_commands].argv
2491 = &(VEC_address (const_char_p, argbuf))[i + 1];
2492 string = find_a_file (&exec_prefixes, commands[n_commands].prog,
2495 commands[n_commands].argv[0] = string;
2499 /* If -v, print what we are about to do, and maybe query. */
2503 /* For help listings, put a blank line between sub-processes. */
2504 if (print_help_list)
2505 fputc ('\n', stderr);
2507 /* Print each piped command as a separate line. */
2508 for (i = 0; i < n_commands; i++)
2510 const char *const *j;
2512 if (verbose_only_flag)
2514 for (j = commands[i].argv; *j; j++)
2517 for (p = *j; *p; ++p)
2518 if (!ISALNUM ((unsigned char) *p)
2519 && *p != '_' && *p != '/' && *p != '-' && *p != '.')
2523 fprintf (stderr, " \"");
2524 for (p = *j; *p; ++p)
2526 if (*p == '"' || *p == '\\' || *p == '$')
2527 fputc ('\\', stderr);
2530 fputc ('"', stderr);
2533 fprintf (stderr, " %s", *j);
2537 for (j = commands[i].argv; *j; j++)
2538 fprintf (stderr, " %s", *j);
2540 /* Print a pipe symbol after all but the last command. */
2541 if (i + 1 != n_commands)
2542 fprintf (stderr, " |");
2543 fprintf (stderr, "\n");
2546 if (verbose_only_flag != 0)
2548 /* verbose_only_flag should act as if the spec was
2549 executed, so increment execution_count before
2550 returning. This prevents spurious warnings about
2551 unused linker input files, etc. */
2556 fnotice (stderr, "\nGo ahead? (y or n) ");
2560 while (getchar () != '\n')
2563 if (i != 'y' && i != 'Y')
2568 #ifdef ENABLE_VALGRIND_CHECKING
2569 /* Run the each command through valgrind. To simplify prepending the
2570 path to valgrind and the option "-q" (for quiet operation unless
2571 something triggers), we allocate a separate argv array. */
2573 for (i = 0; i < n_commands; i++)
2579 for (argc = 0; commands[i].argv[argc] != NULL; argc++)
2582 argv = XALLOCAVEC (const char *, argc + 3);
2584 argv[0] = VALGRIND_PATH;
2586 for (j = 2; j < argc + 2; j++)
2587 argv[j] = commands[i].argv[j - 2];
2590 commands[i].argv = argv;
2591 commands[i].prog = argv[0];
2595 /* Run each piped subprocess. */
2597 pex = pex_init (PEX_USE_PIPES | ((report_times || report_times_to_file)
2598 ? PEX_RECORD_TIMES : 0),
2599 progname, temp_filename);
2601 fatal_error ("pex_init failed: %m");
2603 for (i = 0; i < n_commands; i++)
2607 const char *string = commands[i].argv[0];
2609 errmsg = pex_run (pex,
2610 ((i + 1 == n_commands ? PEX_LAST : 0)
2611 | (string == commands[i].prog ? PEX_SEARCH : 0)),
2612 string, CONST_CAST (char **, commands[i].argv),
2617 fatal_error (errmsg);
2621 pfatal_with_name (errmsg);
2625 if (string != commands[i].prog)
2626 free (CONST_CAST (char *, string));
2631 /* Wait for all the subprocesses to finish. */
2635 struct pex_time *times = NULL;
2638 statuses = (int *) alloca (n_commands * sizeof (int));
2639 if (!pex_get_status (pex, n_commands, statuses))
2640 fatal_error ("failed to get exit status: %m");
2642 if (report_times || report_times_to_file)
2644 times = (struct pex_time *) alloca (n_commands * sizeof (struct pex_time));
2645 if (!pex_get_times (pex, n_commands, times))
2646 fatal_error ("failed to get process times: %m");
2651 for (i = 0; i < n_commands; ++i)
2653 int status = statuses[i];
2655 if (WIFSIGNALED (status))
2658 /* SIGPIPE is a special case. It happens in -pipe mode
2659 when the compiler dies before the preprocessor is done,
2660 or the assembler dies before the compiler is done.
2661 There's generally been an error already, and this is
2662 just fallout. So don't generate another error unless
2663 we would otherwise have succeeded. */
2664 if (WTERMSIG (status) == SIGPIPE
2665 && (signal_count || greatest_status >= MIN_FATAL_STATUS))
2672 internal_error ("%s (program %s)",
2673 strsignal (WTERMSIG (status)), commands[i].prog);
2675 else if (WIFEXITED (status)
2676 && WEXITSTATUS (status) >= MIN_FATAL_STATUS)
2678 if (WEXITSTATUS (status) > greatest_status)
2679 greatest_status = WEXITSTATUS (status);
2683 if (report_times || report_times_to_file)
2685 struct pex_time *pt = ×[i];
2688 ut = ((double) pt->user_seconds
2689 + (double) pt->user_microseconds / 1.0e6);
2690 st = ((double) pt->system_seconds
2691 + (double) pt->system_microseconds / 1.0e6);
2696 fnotice (stderr, "# %s %.2f %.2f\n",
2697 commands[i].prog, ut, st);
2699 if (report_times_to_file)
2702 const char *const *j;
2704 fprintf (report_times_to_file, "%g %g", ut, st);
2706 for (j = &commands[i].prog; *j; j = &commands[i].argv[++c])
2709 for (p = *j; *p; ++p)
2710 if (*p == '"' || *p == '\\' || *p == '$'
2716 fprintf (report_times_to_file, " \"");
2717 for (p = *j; *p; ++p)
2719 if (*p == '"' || *p == '\\' || *p == '$')
2720 fputc ('\\', report_times_to_file);
2721 fputc (*p, report_times_to_file);
2723 fputc ('"', report_times_to_file);
2726 fprintf (report_times_to_file, " %s", *j);
2729 fputc ('\n', report_times_to_file);
2739 /* Find all the switches given to us
2740 and make a vector describing them.
2741 The elements of the vector are strings, one per switch given.
2742 If a switch uses following arguments, then the `part1' field
2743 is the switch itself and the `args' field
2744 is a null-terminated vector containing the following arguments.
2745 Bits in the `live_cond' field are:
2746 SWITCH_LIVE to indicate this switch is true in a conditional spec.
2747 SWITCH_FALSE to indicate this switch is overridden by a later switch.
2748 SWITCH_IGNORE to indicate this switch should be ignored (used in %<S).
2749 SWITCH_IGNORE_PERMANENTLY to indicate this switch should be ignored
2750 in all do_spec calls afterwards. Used for %<S from self specs.
2751 The `validated' field is nonzero if any spec has looked at this switch;
2752 if it remains zero at the end of the run, it must be meaningless. */
2754 #define SWITCH_LIVE (1 << 0)
2755 #define SWITCH_FALSE (1 << 1)
2756 #define SWITCH_IGNORE (1 << 2)
2757 #define SWITCH_IGNORE_PERMANENTLY (1 << 3)
2758 #define SWITCH_KEEP_FOR_GCC (1 << 4)
2764 unsigned int live_cond;
2765 unsigned char validated;
2766 unsigned char ordering;
2769 static struct switchstr *switches;
2771 static int n_switches;
2773 static int n_switches_alloc;
2775 /* Set to zero if -fcompare-debug is disabled, positive if it's
2776 enabled and we're running the first compilation, negative if it's
2777 enabled and we're running the second compilation. For most of the
2778 time, it's in the range -1..1, but it can be temporarily set to 2
2779 or 3 to indicate that the -fcompare-debug flags didn't come from
2780 the command-line, but rather from the GCC_COMPARE_DEBUG environment
2781 variable, until a synthesized -fcompare-debug flag is added to the
2785 /* Set to nonzero if we've seen the -fcompare-debug-second flag. */
2786 int compare_debug_second;
2788 /* Set to the flags that should be passed to the second compilation in
2789 a -fcompare-debug compilation. */
2790 const char *compare_debug_opt;
2792 static struct switchstr *switches_debug_check[2];
2794 static int n_switches_debug_check[2];
2796 static int n_switches_alloc_debug_check[2];
2798 static char *debug_check_temp_file[2];
2800 /* Language is one of three things:
2802 1) The name of a real programming language.
2803 2) NULL, indicating that no one has figured out
2805 3) '*', indicating that the file should be passed
2810 const char *language;
2811 struct compiler *incompiler;
2816 /* Also a vector of input files specified. */
2818 static struct infile *infiles;
2822 static int n_infiles_alloc;
2824 /* True if multiple input files are being compiled to a single
2827 static bool combine_inputs;
2829 /* This counts the number of libraries added by lang_specific_driver, so that
2830 we can tell if there were any user supplied any files or libraries. */
2832 static int added_libraries;
2834 /* And a vector of corresponding output files is made up later. */
2836 const char **outfiles;
2838 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2840 /* Convert NAME to a new name if it is the standard suffix. DO_EXE
2841 is true if we should look for an executable suffix. DO_OBJ
2842 is true if we should look for an object suffix. */
2845 convert_filename (const char *name, int do_exe ATTRIBUTE_UNUSED,
2846 int do_obj ATTRIBUTE_UNUSED)
2848 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2856 len = strlen (name);
2858 #ifdef HAVE_TARGET_OBJECT_SUFFIX
2859 /* Convert x.o to x.obj if TARGET_OBJECT_SUFFIX is ".obj". */
2860 if (do_obj && len > 2
2861 && name[len - 2] == '.'
2862 && name[len - 1] == 'o')
2864 obstack_grow (&obstack, name, len - 2);
2865 obstack_grow0 (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX));
2866 name = XOBFINISH (&obstack, const char *);
2870 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2871 /* If there is no filetype, make it the executable suffix (which includes
2872 the "."). But don't get confused if we have just "-o". */
2873 if (! do_exe || TARGET_EXECUTABLE_SUFFIX[0] == 0 || (len == 2 && name[0] == '-'))
2876 for (i = len - 1; i >= 0; i--)
2877 if (IS_DIR_SEPARATOR (name[i]))
2880 for (i++; i < len; i++)
2884 obstack_grow (&obstack, name, len);
2885 obstack_grow0 (&obstack, TARGET_EXECUTABLE_SUFFIX,
2886 strlen (TARGET_EXECUTABLE_SUFFIX));
2887 name = XOBFINISH (&obstack, const char *);
2894 /* Display the command line switches accepted by gcc. */
2898 printf (_("Usage: %s [options] file...\n"), progname);
2899 fputs (_("Options:\n"), stdout);
2901 fputs (_(" -pass-exit-codes Exit with highest error code from a phase\n"), stdout);
2902 fputs (_(" --help Display this information\n"), stdout);
2903 fputs (_(" --target-help Display target specific command line options\n"), stdout);
2904 fputs (_(" --help={target|optimizers|warnings|params|[^]{joined|separate|undocumented}}[,...]\n"), stdout);
2905 fputs (_(" Display specific types of command line options\n"), stdout);
2907 fputs (_(" (Use '-v --help' to display command line options of sub-processes)\n"), stdout);
2908 fputs (_(" --version Display compiler version information\n"), stdout);
2909 fputs (_(" -dumpspecs Display all of the built in spec strings\n"), stdout);
2910 fputs (_(" -dumpversion Display the version of the compiler\n"), stdout);
2911 fputs (_(" -dumpmachine Display the compiler's target processor\n"), stdout);
2912 fputs (_(" -print-search-dirs Display the directories in the compiler's search path\n"), stdout);
2913 fputs (_(" -print-libgcc-file-name Display the name of the compiler's companion library\n"), stdout);
2914 fputs (_(" -print-file-name=<lib> Display the full path to library <lib>\n"), stdout);
2915 fputs (_(" -print-prog-name=<prog> Display the full path to compiler component <prog>\n"), stdout);
2916 fputs (_(" -print-multi-directory Display the root directory for versions of libgcc\n"), stdout);
2918 -print-multi-lib Display the mapping between command line options and\n\
2919 multiple library search directories\n"), stdout);
2920 fputs (_(" -print-multi-os-directory Display the relative path to OS libraries\n"), stdout);
2921 fputs (_(" -print-sysroot Display the target libraries directory\n"), stdout);
2922 fputs (_(" -print-sysroot-headers-suffix Display the sysroot suffix used to find headers\n"), stdout);
2923 fputs (_(" -Wa,<options> Pass comma-separated <options> on to the assembler\n"), stdout);
2924 fputs (_(" -Wp,<options> Pass comma-separated <options> on to the preprocessor\n"), stdout);
2925 fputs (_(" -Wl,<options> Pass comma-separated <options> on to the linker\n"), stdout);
2926 fputs (_(" -Xassembler <arg> Pass <arg> on to the assembler\n"), stdout);
2927 fputs (_(" -Xpreprocessor <arg> Pass <arg> on to the preprocessor\n"), stdout);
2928 fputs (_(" -Xlinker <arg> Pass <arg> on to the linker\n"), stdout);
2929 fputs (_(" -save-temps Do not delete intermediate files\n"), stdout);
2930 fputs (_(" -save-temps=<arg> Do not delete intermediate files\n"), stdout);
2932 -no-canonical-prefixes Do not canonicalize paths when building relative\n\
2933 prefixes to other gcc components\n"), stdout);
2934 fputs (_(" -pipe Use pipes rather than intermediate files\n"), stdout);
2935 fputs (_(" -time Time the execution of each subprocess\n"), stdout);
2936 fputs (_(" -specs=<file> Override built-in specs with the contents of <file>\n"), stdout);
2937 fputs (_(" -std=<standard> Assume that the input sources are for <standard>\n"), stdout);
2939 --sysroot=<directory> Use <directory> as the root directory for headers\n\
2940 and libraries\n"), stdout);
2941 fputs (_(" -B <directory> Add <directory> to the compiler's search paths\n"), stdout);
2942 fputs (_(" -v Display the programs invoked by the compiler\n"), stdout);
2943 fputs (_(" -### Like -v but options quoted and commands not executed\n"), stdout);
2944 fputs (_(" -E Preprocess only; do not compile, assemble or link\n"), stdout);
2945 fputs (_(" -S Compile only; do not assemble or link\n"), stdout);
2946 fputs (_(" -c Compile and assemble, but do not link\n"), stdout);
2947 fputs (_(" -o <file> Place the output into <file>\n"), stdout);
2949 -x <language> Specify the language of the following input files\n\
2950 Permissible languages include: c c++ assembler none\n\
2951 'none' means revert to the default behavior of\n\
2952 guessing the language based on the file's extension\n\
2956 \nOptions starting with -g, -f, -m, -O, -W, or --param are automatically\n\
2957 passed on to the various sub-processes invoked by %s. In order to pass\n\
2958 other options on to these processes the -W<letter> options must be used.\n\
2961 /* The rest of the options are displayed by invocations of the various
2966 add_preprocessor_option (const char *option, int len)
2968 VEC_safe_push (char_p, heap, preprocessor_options,
2969 save_string (option, len));
2973 add_assembler_option (const char *option, int len)
2975 VEC_safe_push (char_p, heap, assembler_options, save_string (option, len));
2979 add_linker_option (const char *option, int len)
2981 VEC_safe_push (char_p, heap, linker_options, save_string (option, len));
2984 /* Allocate space for an input file in infiles. */
2989 if (n_infiles_alloc == 0)
2991 n_infiles_alloc = 16;
2992 infiles = XNEWVEC (struct infile, n_infiles_alloc);
2994 else if (n_infiles_alloc == n_infiles)
2996 n_infiles_alloc *= 2;
2997 infiles = XRESIZEVEC (struct infile, infiles, n_infiles_alloc);
3001 /* Store an input file with the given NAME and LANGUAGE in
3005 add_infile (const char *name, const char *language)
3008 infiles[n_infiles].name = name;
3009 infiles[n_infiles++].language = language;
3012 /* Allocate space for a switch in switches. */
3017 if (n_switches_alloc == 0)
3019 n_switches_alloc = 16;
3020 switches = XNEWVEC (struct switchstr, n_switches_alloc);
3022 else if (n_switches_alloc == n_switches)
3024 n_switches_alloc *= 2;
3025 switches = XRESIZEVEC (struct switchstr, switches, n_switches_alloc);
3029 /* Save an option OPT with N_ARGS arguments in array ARGS, marking it
3030 as validated if VALIDATED. */
3033 save_switch (const char *opt, size_t n_args, const char *const *args,
3037 switches[n_switches].part1 = opt + 1;
3039 switches[n_switches].args = 0;
3042 switches[n_switches].args = XNEWVEC (const char *, n_args + 1);
3043 memcpy (switches[n_switches].args, args, n_args * sizeof (const char *));
3044 switches[n_switches].args[n_args] = NULL;
3047 switches[n_switches].live_cond = 0;
3048 switches[n_switches].validated = validated;
3049 switches[n_switches].ordering = 0;
3053 /* Handle an option DECODED that is unknown to the option-processing
3054 machinery, but may be known to specs. */
3057 driver_unknown_option_callback (const struct cl_decoded_option *decoded)
3059 save_switch (decoded->canonical_option[0],
3060 decoded->canonical_option_num_elements - 1,
3061 &decoded->canonical_option[1], false);
3066 /* Handle an option DECODED that is not marked as CL_DRIVER.
3067 LANG_MASK will always be CL_DRIVER. */
3070 driver_wrong_lang_callback (const struct cl_decoded_option *decoded,
3071 unsigned int lang_mask ATTRIBUTE_UNUSED)
3073 /* At this point, non-driver options are accepted (and expected to
3074 be passed down by specs) unless marked to be rejected by the
3075 driver. Options to be rejected by the driver but accepted by the
3076 compilers proper are treated just like completely unknown
3078 const struct cl_option *option = &cl_options[decoded->opt_index];
3080 if (option->flags & CL_REJECT_DRIVER)
3081 error ("unrecognized command line option %qs",
3082 decoded->orig_option_with_args_text);
3084 driver_unknown_option_callback (decoded);
3087 /* Note that an option (index OPT_INDEX, argument ARG, value VALUE)
3088 has been successfully handled with a handler for mask MASK. */
3091 driver_post_handling_callback (const struct cl_decoded_option *decoded ATTRIBUTE_UNUSED,
3092 unsigned int mask ATTRIBUTE_UNUSED)
3094 /* Nothing to do here. */
3097 static const char *spec_lang = 0;
3098 static int last_language_n_infiles;
3100 /* Handle a driver option; arguments and return value as for
3104 driver_handle_option (struct gcc_options *opts,
3105 struct gcc_options *opts_set,
3106 const struct cl_decoded_option *decoded,
3107 unsigned int lang_mask ATTRIBUTE_UNUSED, int kind,
3109 const struct cl_option_handlers *handlers ATTRIBUTE_UNUSED,
3110 diagnostic_context *dc)
3112 size_t opt_index = decoded->opt_index;
3113 const char *arg = decoded->arg;
3114 const char *compare_debug_replacement_opt;
3115 int value = decoded->value;
3116 bool validated = false;
3117 bool do_save = true;
3119 gcc_assert (opts == &global_options);
3120 gcc_assert (opts_set == &global_options_set);
3121 gcc_assert (kind == DK_UNSPECIFIED);
3122 gcc_assert (loc == UNKNOWN_LOCATION);
3123 gcc_assert (dc == global_dc);
3129 struct spec_list *sl;
3131 for (sl = specs; sl; sl = sl->next)
3132 printf ("*%s:\n%s\n\n", sl->name, *(sl->ptr_spec));
3133 if (link_command_spec)
3134 printf ("*link_command:\n%s\n\n", link_command_spec);
3138 case OPT_dumpversion:
3139 printf ("%s\n", spec_version);
3142 case OPT_dumpmachine:
3143 printf ("%s\n", spec_machine);
3149 /* CPP driver cannot obtain switch from cc1_options. */
3151 add_preprocessor_option ("--version", strlen ("--version"));
3152 add_assembler_option ("--version", strlen ("--version"));
3153 add_linker_option ("--version", strlen ("--version"));
3157 print_help_list = 1;
3159 /* CPP driver cannot obtain switch from cc1_options. */
3161 add_preprocessor_option ("--help", 6);
3162 add_assembler_option ("--help", 6);
3163 add_linker_option ("--help", 6);
3167 print_subprocess_help = 2;
3170 case OPT__target_help:
3171 print_subprocess_help = 1;
3173 /* CPP driver cannot obtain switch from cc1_options. */
3175 add_preprocessor_option ("--target-help", 13);
3176 add_assembler_option ("--target-help", 13);
3177 add_linker_option ("--target-help", 13);
3180 case OPT_pass_exit_codes:
3181 case OPT_print_search_dirs:
3182 case OPT_print_file_name_:
3183 case OPT_print_prog_name_:
3184 case OPT_print_multi_lib:
3185 case OPT_print_multi_directory:
3186 case OPT_print_sysroot:
3187 case OPT_print_multi_os_directory:
3188 case OPT_print_sysroot_headers_suffix:
3191 /* These options set the variables specified in common.opt
3192 automatically, and do not need to be saved for spec
3197 case OPT_print_libgcc_file_name:
3198 print_file_name = "libgcc.a";
3202 case OPT_fcompare_debug_second:
3203 compare_debug_second = 1;
3206 case OPT_fcompare_debug:
3210 compare_debug_replacement_opt = "-fcompare-debug=";
3212 goto compare_debug_with_arg;
3215 compare_debug_replacement_opt = "-fcompare-debug=-gtoggle";
3217 goto compare_debug_with_arg;
3224 case OPT_fcompare_debug_:
3225 compare_debug_replacement_opt = decoded->canonical_option[0];
3226 compare_debug_with_arg:
3227 gcc_assert (decoded->canonical_option_num_elements == 1);
3228 gcc_assert (arg != NULL);
3233 if (compare_debug < 0)
3234 compare_debug_opt = NULL;
3236 compare_debug_opt = arg;
3237 save_switch (compare_debug_replacement_opt, 0, NULL, validated);
3243 /* Pass the rest of this option to the assembler. */
3245 /* Split the argument at commas. */
3247 for (j = 0; arg[j]; j++)
3250 add_assembler_option (arg + prev, j - prev);
3254 /* Record the part after the last comma. */
3255 add_assembler_option (arg + prev, j - prev);
3263 /* Pass the rest of this option to the preprocessor. */
3265 /* Split the argument at commas. */
3267 for (j = 0; arg[j]; j++)
3270 add_preprocessor_option (arg + prev, j - prev);
3274 /* Record the part after the last comma. */
3275 add_preprocessor_option (arg + prev, j - prev);
3283 /* Split the argument at commas. */
3285 for (j = 0; arg[j]; j++)
3288 add_infile (save_string (arg + prev, j - prev), "*");
3291 /* Record the part after the last comma. */
3292 add_infile (arg + prev, "*");
3298 add_infile (arg, "*");
3302 case OPT_Xpreprocessor:
3303 add_preprocessor_option (arg, strlen (arg));
3307 case OPT_Xassembler:
3308 add_assembler_option (arg, strlen (arg));
3313 /* POSIX allows separation of -l and the lib arg; canonicalize
3314 by concatenating -l with its arg */
3315 add_infile (concat ("-l", arg, NULL), "*");
3320 /* Similarly, canonicalize -L for linkers that may not accept
3321 separate arguments. */
3322 save_switch (concat ("-L", arg, NULL), 0, NULL, validated);
3325 case OPT_save_temps:
3326 save_temps_flag = SAVE_TEMPS_CWD;
3330 case OPT_save_temps_:
3331 if (strcmp (arg, "cwd") == 0)
3332 save_temps_flag = SAVE_TEMPS_CWD;
3333 else if (strcmp (arg, "obj") == 0
3334 || strcmp (arg, "object") == 0)
3335 save_temps_flag = SAVE_TEMPS_OBJ;
3337 fatal_error ("%qs is an unknown -save-temps option",
3338 decoded->orig_option_with_args_text);
3341 case OPT_no_canonical_prefixes:
3342 /* Already handled as a special case, so ignored here. */
3348 /* These options set the variables specified in common.opt
3349 automatically, but do need to be saved for spec
3355 struct user_specs *user = XNEW (struct user_specs);
3357 user->next = (struct user_specs *) 0;
3358 user->filename = arg;
3359 if (user_specs_tail)
3360 user_specs_tail->next = user;
3362 user_specs_head = user;
3363 user_specs_tail = user;
3369 target_system_root = arg;
3370 target_system_root_changed = 1;
3375 if (report_times_to_file)
3376 fclose (report_times_to_file);
3377 report_times_to_file = fopen (arg, "a");
3383 This is similar to -v except that there is no execution
3384 of the commands and the echoed arguments are quoted. It
3385 is intended for use in shell scripts to capture the
3386 driver-generated command line. */
3387 verbose_only_flag++;
3394 size_t len = strlen (arg);
3396 /* Catch the case where the user has forgotten to append a
3397 directory separator to the path. Note, they may be using
3398 -B to add an executable name prefix, eg "i386-elf-", in
3399 order to distinguish between multiple installations of
3400 GCC in the same directory. Hence we must check to see
3401 if appending a directory separator actually makes a
3402 valid directory name. */
3403 if (!IS_DIR_SEPARATOR (arg[len - 1])
3404 && is_directory (arg, false))
3406 char *tmp = XNEWVEC (char, len + 2);
3408 tmp[len] = DIR_SEPARATOR;
3413 add_prefix (&exec_prefixes, arg, NULL,
3414 PREFIX_PRIORITY_B_OPT, 0, 0);
3415 add_prefix (&startfile_prefixes, arg, NULL,
3416 PREFIX_PRIORITY_B_OPT, 0, 0);
3417 add_prefix (&include_prefixes, arg, NULL,
3418 PREFIX_PRIORITY_B_OPT, 0, 0);
3425 if (!strcmp (spec_lang, "none"))
3426 /* Suppress the warning if -xnone comes after the last input
3427 file, because alternate command interfaces like g++ might
3428 find it useful to place -xnone after each input file. */
3431 last_language_n_infiles = n_infiles;
3437 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX) || defined(HAVE_TARGET_OBJECT_SUFFIX)
3438 arg = convert_filename (arg, ! have_c, 0);
3440 /* Save the output name in case -save-temps=obj was used. */
3441 save_temps_prefix = xstrdup (arg);
3442 /* On some systems, ld cannot handle "-o" without a space. So
3443 split the option from its argument. */
3444 save_switch ("-o", 1, &arg, validated);
3447 case OPT_static_libgcc:
3448 case OPT_shared_libgcc:
3449 case OPT_static_libgfortran:
3450 case OPT_static_libstdc__:
3451 /* These are always valid, since gcc.c itself understands the
3452 first two, gfortranspec.c understands -static-libgfortran and
3453 g++spec.c understands -static-libstdc++ */
3458 /* Various driver options need no special processing at this
3459 point, having been handled in a prescan above or being
3460 handled by specs. */
3465 save_switch (decoded->canonical_option[0],
3466 decoded->canonical_option_num_elements - 1,
3467 &decoded->canonical_option[1], validated);
3471 /* Put the driver's standard set of option handlers in *HANDLERS. */
3474 set_option_handlers (struct cl_option_handlers *handlers)
3476 handlers->unknown_option_callback = driver_unknown_option_callback;
3477 handlers->wrong_lang_callback = driver_wrong_lang_callback;
3478 handlers->post_handling_callback = driver_post_handling_callback;
3479 handlers->num_handlers = 1;
3480 handlers->handlers[0].handler = driver_handle_option;
3481 handlers->handlers[0].mask = CL_DRIVER;
3484 /* Create the vector `switches' and its contents.
3485 Store its length in `n_switches'. */
3488 process_command (unsigned int decoded_options_count,
3489 struct cl_decoded_option *decoded_options)
3493 const char *tooldir_prefix;
3494 char *(*get_relative_prefix) (const char *, const char *,
3495 const char *) = NULL;
3496 struct cl_option_handlers handlers;
3499 gcc_exec_prefix = getenv ("GCC_EXEC_PREFIX");
3503 added_libraries = 0;
3505 /* Figure compiler version from version string. */
3507 compiler_version = temp1 = xstrdup (version_string);
3509 for (; *temp1; ++temp1)
3518 /* Handle any -no-canonical-prefixes flag early, to assign the function
3519 that builds relative prefixes. This function creates default search
3520 paths that are needed later in normal option handling. */
3522 for (j = 1; j < decoded_options_count; j++)
3524 if (decoded_options[j].opt_index == OPT_no_canonical_prefixes)
3526 get_relative_prefix = make_relative_prefix_ignore_links;
3530 if (! get_relative_prefix)
3531 get_relative_prefix = make_relative_prefix;
3533 /* Set up the default search paths. If there is no GCC_EXEC_PREFIX,
3534 see if we can create it from the pathname specified in
3535 decoded_options[0].arg. */
3537 gcc_libexec_prefix = standard_libexec_prefix;
3539 /* FIXME: make_relative_prefix doesn't yet work for VMS. */
3540 if (!gcc_exec_prefix)
3542 gcc_exec_prefix = get_relative_prefix (decoded_options[0].arg,
3543 standard_bindir_prefix,
3544 standard_exec_prefix);
3545 gcc_libexec_prefix = get_relative_prefix (decoded_options[0].arg,
3546 standard_bindir_prefix,
3547 standard_libexec_prefix);
3548 if (gcc_exec_prefix)
3549 xputenv (concat ("GCC_EXEC_PREFIX=", gcc_exec_prefix, NULL));
3553 /* make_relative_prefix requires a program name, but
3554 GCC_EXEC_PREFIX is typically a directory name with a trailing
3555 / (which is ignored by make_relative_prefix), so append a
3557 char *tmp_prefix = concat (gcc_exec_prefix, "gcc", NULL);
3558 gcc_libexec_prefix = get_relative_prefix (tmp_prefix,
3559 standard_exec_prefix,
3560 standard_libexec_prefix);
3562 /* The path is unrelocated, so fallback to the original setting. */
3563 if (!gcc_libexec_prefix)
3564 gcc_libexec_prefix = standard_libexec_prefix;
3570 /* From this point onward, gcc_exec_prefix is non-null if the toolchain
3571 is relocated. The toolchain was either relocated using GCC_EXEC_PREFIX
3572 or an automatically created GCC_EXEC_PREFIX from
3573 decoded_options[0].arg. */
3575 /* Do language-specific adjustment/addition of flags. */
3576 lang_specific_driver (&decoded_options, &decoded_options_count,
3579 if (gcc_exec_prefix)
3581 int len = strlen (gcc_exec_prefix);
3583 if (len > (int) sizeof ("/lib/gcc/") - 1
3584 && (IS_DIR_SEPARATOR (gcc_exec_prefix[len-1])))
3586 temp = gcc_exec_prefix + len - sizeof ("/lib/gcc/") + 1;
3587 if (IS_DIR_SEPARATOR (*temp)
3588 && strncmp (temp + 1, "lib", 3) == 0
3589 && IS_DIR_SEPARATOR (temp[4])
3590 && strncmp (temp + 5, "gcc", 3) == 0)
3591 len -= sizeof ("/lib/gcc/") - 1;
3594 set_std_prefix (gcc_exec_prefix, len);
3595 add_prefix (&exec_prefixes, gcc_libexec_prefix, "GCC",
3596 PREFIX_PRIORITY_LAST, 0, 0);
3597 add_prefix (&startfile_prefixes, gcc_exec_prefix, "GCC",
3598 PREFIX_PRIORITY_LAST, 0, 0);
3601 /* COMPILER_PATH and LIBRARY_PATH have values
3602 that are lists of directory names with colons. */
3604 temp = getenv ("COMPILER_PATH");
3607 const char *startp, *endp;
3608 char *nstore = (char *) alloca (strlen (temp) + 3);
3610 startp = endp = temp;
3613 if (*endp == PATH_SEPARATOR || *endp == 0)
3615 strncpy (nstore, startp, endp - startp);
3617 strcpy (nstore, concat (".", dir_separator_str, NULL));
3618 else if (!IS_DIR_SEPARATOR (endp[-1]))
3620 nstore[endp - startp] = DIR_SEPARATOR;
3621 nstore[endp - startp + 1] = 0;
3624 nstore[endp - startp] = 0;
3625 add_prefix (&exec_prefixes, nstore, 0,
3626 PREFIX_PRIORITY_LAST, 0, 0);
3627 add_prefix (&include_prefixes, nstore, 0,
3628 PREFIX_PRIORITY_LAST, 0, 0);
3631 endp = startp = endp + 1;
3638 temp = getenv (LIBRARY_PATH_ENV);
3639 if (temp && *cross_compile == '0')
3641 const char *startp, *endp;
3642 char *nstore = (char *) alloca (strlen (temp) + 3);
3644 startp = endp = temp;
3647 if (*endp == PATH_SEPARATOR || *endp == 0)
3649 strncpy (nstore, startp, endp - startp);
3651 strcpy (nstore, concat (".", dir_separator_str, NULL));
3652 else if (!IS_DIR_SEPARATOR (endp[-1]))
3654 nstore[endp - startp] = DIR_SEPARATOR;
3655 nstore[endp - startp + 1] = 0;
3658 nstore[endp - startp] = 0;
3659 add_prefix (&startfile_prefixes, nstore, NULL,
3660 PREFIX_PRIORITY_LAST, 0, 1);
3663 endp = startp = endp + 1;
3670 /* Use LPATH like LIBRARY_PATH (for the CMU build program). */
3671 temp = getenv ("LPATH");
3672 if (temp && *cross_compile == '0')
3674 const char *startp, *endp;
3675 char *nstore = (char *) alloca (strlen (temp) + 3);
3677 startp = endp = temp;
3680 if (*endp == PATH_SEPARATOR || *endp == 0)
3682 strncpy (nstore, startp, endp - startp);
3684 strcpy (nstore, concat (".", dir_separator_str, NULL));
3685 else if (!IS_DIR_SEPARATOR (endp[-1]))
3687 nstore[endp - startp] = DIR_SEPARATOR;
3688 nstore[endp - startp + 1] = 0;
3691 nstore[endp - startp] = 0;
3692 add_prefix (&startfile_prefixes, nstore, NULL,
3693 PREFIX_PRIORITY_LAST, 0, 1);
3696 endp = startp = endp + 1;
3703 /* Process the options and store input files and switches in their
3706 last_language_n_infiles = -1;
3708 set_option_handlers (&handlers);
3710 for (j = 1; j < decoded_options_count; j++)
3712 switch (decoded_options[j].opt_index)
3724 for (j = 1; j < decoded_options_count; j++)
3726 if (decoded_options[j].opt_index == OPT_SPECIAL_input_file)
3728 const char *arg = decoded_options[j].arg;
3729 const char *p = strrchr (arg, '@');
3733 #ifdef HAVE_TARGET_OBJECT_SUFFIX
3734 arg = convert_filename (arg, 0, access (arg, F_OK));
3736 /* For LTO static archive support we handle input file
3737 specifications that are composed of a filename and
3738 an offset like FNAME@OFFSET. */
3741 && sscanf (p, "@%li%n", &offset, &consumed) >= 1
3742 && strlen (p) == (unsigned int)consumed)
3744 fname = (char *)xmalloc (p - arg + 1);
3745 memcpy (fname, arg, p - arg);
3746 fname[p - arg] = '\0';
3747 /* Only accept non-stdin and existing FNAME parts, otherwise
3748 try with the full name. */
3749 if (strcmp (fname, "-") == 0 || access (fname, F_OK) < 0)
3752 fname = xstrdup (arg);
3756 fname = xstrdup (arg);
3758 if (strcmp (fname, "-") != 0 && access (fname, F_OK) < 0)
3759 perror_with_name (fname);
3761 add_infile (arg, spec_lang);
3767 read_cmdline_option (&global_options, &global_options_set,
3768 decoded_options + j, UNKNOWN_LOCATION,
3769 CL_DRIVER, &handlers, global_dc);
3772 /* If -save-temps=obj and -o name, create the prefix to use for %b.
3773 Otherwise just make -save-temps=obj the same as -save-temps=cwd. */
3774 if (save_temps_flag == SAVE_TEMPS_OBJ && save_temps_prefix != NULL)
3776 save_temps_length = strlen (save_temps_prefix);
3777 temp = strrchr (lbasename (save_temps_prefix), '.');
3780 save_temps_length -= strlen (temp);
3781 save_temps_prefix[save_temps_length] = '\0';
3785 else if (save_temps_prefix != NULL)
3787 free (save_temps_prefix);
3788 save_temps_prefix = NULL;
3791 if (save_temps_flag && use_pipes)
3793 /* -save-temps overrides -pipe, so that temp files are produced */
3794 if (save_temps_flag)
3795 warning (0, "-pipe ignored because -save-temps specified");
3801 const char *gcd = getenv ("GCC_COMPARE_DEBUG");
3803 if (gcd && gcd[0] == '-')
3806 compare_debug_opt = gcd;
3808 else if (gcd && *gcd && strcmp (gcd, "0"))
3811 compare_debug_opt = "-gtoggle";
3814 else if (compare_debug < 0)
3817 gcc_assert (!compare_debug_opt);
3820 /* Set up the search paths. We add directories that we expect to
3821 contain GNU Toolchain components before directories specified by
3822 the machine description so that we will find GNU components (like
3823 the GNU assembler) before those of the host system. */
3825 /* If we don't know where the toolchain has been installed, use the
3826 configured-in locations. */
3827 if (!gcc_exec_prefix)
3830 add_prefix (&exec_prefixes, standard_libexec_prefix, "GCC",
3831 PREFIX_PRIORITY_LAST, 1, 0);
3832 add_prefix (&exec_prefixes, standard_libexec_prefix, "BINUTILS",
3833 PREFIX_PRIORITY_LAST, 2, 0);
3834 add_prefix (&exec_prefixes, standard_exec_prefix, "BINUTILS",
3835 PREFIX_PRIORITY_LAST, 2, 0);
3837 add_prefix (&startfile_prefixes, standard_exec_prefix, "BINUTILS",
3838 PREFIX_PRIORITY_LAST, 1, 0);
3841 gcc_assert (!IS_ABSOLUTE_PATH (tooldir_base_prefix));
3842 tooldir_prefix = concat (tooldir_base_prefix, spec_machine,
3843 dir_separator_str, NULL);
3845 /* Look for tools relative to the location from which the driver is
3846 running, or, if that is not available, the configured prefix. */
3848 = concat (gcc_exec_prefix ? gcc_exec_prefix : standard_exec_prefix,
3849 spec_machine, dir_separator_str,
3850 spec_version, dir_separator_str, tooldir_prefix, NULL);
3852 add_prefix (&exec_prefixes,
3853 concat (tooldir_prefix, "bin", dir_separator_str, NULL),
3854 "BINUTILS", PREFIX_PRIORITY_LAST, 0, 0);
3855 add_prefix (&startfile_prefixes,
3856 concat (tooldir_prefix, "lib", dir_separator_str, NULL),
3857 "BINUTILS", PREFIX_PRIORITY_LAST, 0, 1);
3859 #if defined(TARGET_SYSTEM_ROOT_RELOCATABLE) && !defined(VMS)
3860 /* If the normal TARGET_SYSTEM_ROOT is inside of $exec_prefix,
3861 then consider it to relocate with the rest of the GCC installation
3862 if GCC_EXEC_PREFIX is set.
3863 ``make_relative_prefix'' is not compiled for VMS, so don't call it. */
3864 if (target_system_root && !target_system_root_changed && gcc_exec_prefix)
3866 char *tmp_prefix = get_relative_prefix (decoded_options[0].arg,
3867 standard_bindir_prefix,
3868 target_system_root);
3869 if (tmp_prefix && access_check (tmp_prefix, F_OK) == 0)
3871 target_system_root = tmp_prefix;
3872 target_system_root_changed = 1;
3877 /* More prefixes are enabled in main, after we read the specs file
3878 and determine whether this is cross-compilation or not. */
3880 if (n_infiles == last_language_n_infiles && spec_lang != 0)
3881 warning (0, "%<-x %s%> after last input file has no effect", spec_lang);
3883 if (compare_debug == 2 || compare_debug == 3)
3886 switches[n_switches].part1 = concat ("fcompare-debug=",
3889 switches[n_switches].args = 0;
3890 switches[n_switches].live_cond = 0;
3891 switches[n_switches].validated = 0;
3892 switches[n_switches].ordering = 0;
3897 /* Ensure we only invoke each subprocess once. */
3898 if (print_subprocess_help || print_help_list || print_version)
3902 /* Create a dummy input file, so that we can pass
3903 the help option on to the various sub-processes. */
3904 add_infile ("help-dummy", "c");
3908 switches[n_switches].part1 = 0;
3910 infiles[n_infiles].name = 0;
3913 /* Store switches not filtered out by %<S in spec in COLLECT_GCC_OPTIONS
3914 and place that in the environment. */
3917 set_collect_gcc_options (void)
3922 /* Build COLLECT_GCC_OPTIONS to have all of the options specified to
3924 obstack_grow (&collect_obstack, "COLLECT_GCC_OPTIONS=",
3925 sizeof ("COLLECT_GCC_OPTIONS=") - 1);
3928 for (i = 0; (int) i < n_switches; i++)
3930 const char *const *args;
3933 obstack_grow (&collect_obstack, " ", 1);
3937 /* Ignore elided switches. */
3938 if ((switches[i].live_cond
3939 & (SWITCH_IGNORE | SWITCH_KEEP_FOR_GCC))
3943 obstack_grow (&collect_obstack, "'-", 2);
3944 q = switches[i].part1;
3945 while ((p = strchr (q, '\'')))
3947 obstack_grow (&collect_obstack, q, p - q);
3948 obstack_grow (&collect_obstack, "'\\''", 4);
3951 obstack_grow (&collect_obstack, q, strlen (q));
3952 obstack_grow (&collect_obstack, "'", 1);
3954 for (args = switches[i].args; args && *args; args++)
3956 obstack_grow (&collect_obstack, " '", 2);
3958 while ((p = strchr (q, '\'')))
3960 obstack_grow (&collect_obstack, q, p - q);
3961 obstack_grow (&collect_obstack, "'\\''", 4);
3964 obstack_grow (&collect_obstack, q, strlen (q));
3965 obstack_grow (&collect_obstack, "'", 1);
3968 obstack_grow (&collect_obstack, "\0", 1);
3969 xputenv (XOBFINISH (&collect_obstack, char *));
3972 /* Process a spec string, accumulating and running commands. */
3974 /* These variables describe the input file name.
3975 input_file_number is the index on outfiles of this file,
3976 so that the output file name can be stored for later use by %o.
3977 input_basename is the start of the part of the input file
3978 sans all directory names, and basename_length is the number
3979 of characters starting there excluding the suffix .c or whatever. */
3981 static const char *gcc_input_filename;
3982 static int input_file_number;
3983 size_t input_filename_length;
3984 static int basename_length;
3985 static int suffixed_basename_length;
3986 static const char *input_basename;
3987 static const char *input_suffix;
3988 #ifndef HOST_LACKS_INODE_NUMBERS
3989 static struct stat input_stat;
3991 static int input_stat_set;
3993 /* The compiler used to process the current input file. */
3994 static struct compiler *input_file_compiler;
3996 /* These are variables used within do_spec and do_spec_1. */
3998 /* Nonzero if an arg has been started and not yet terminated
3999 (with space, tab or newline). */
4000 static int arg_going;
4002 /* Nonzero means %d or %g has been seen; the next arg to be terminated
4003 is a temporary file name. */
4004 static int delete_this_arg;
4006 /* Nonzero means %w has been seen; the next arg to be terminated
4007 is the output file name of this compilation. */
4008 static int this_is_output_file;
4010 /* Nonzero means %s has been seen; the next arg to be terminated
4011 is the name of a library file and we should try the standard
4012 search dirs for it. */
4013 static int this_is_library_file;
4015 /* Nonzero means %T has been seen; the next arg to be terminated
4016 is the name of a linker script and we should try all of the
4017 standard search dirs for it. If it is found insert a --script
4018 command line switch and then substitute the full path in place,
4019 otherwise generate an error message. */
4020 static int this_is_linker_script;
4022 /* Nonzero means that the input of this command is coming from a pipe. */
4023 static int input_from_pipe;
4025 /* Nonnull means substitute this for any suffix when outputting a switches
4027 static const char *suffix_subst;
4029 /* If there is an argument being accumulated, terminate it and store it. */
4032 end_going_arg (void)
4038 obstack_1grow (&obstack, 0);
4039 string = XOBFINISH (&obstack, const char *);
4040 if (this_is_library_file)
4041 string = find_file (string);
4042 if (this_is_linker_script)
4044 char * full_script_path = find_a_file (&startfile_prefixes, string, R_OK, true);
4046 if (full_script_path == NULL)
4048 error ("unable to locate default linker script %qs in the library search paths", string);
4049 /* Script was not found on search path. */
4052 store_arg ("--script", false, false);
4053 string = full_script_path;
4055 store_arg (string, delete_this_arg, this_is_output_file);
4056 if (this_is_output_file)
4057 outfiles[input_file_number] = string;
4063 /* Parse the WRAPPER string which is a comma separated list of the command line
4064 and insert them into the beginning of argbuf. */
4067 insert_wrapper (const char *wrapper)
4071 char *buf = xstrdup (wrapper);
4073 unsigned int old_length = VEC_length (const_char_p, argbuf);
4081 while ((p = strchr (p, ',')) != NULL);
4083 VEC_safe_grow (const_char_p, heap, argbuf, old_length + n);
4084 memmove (VEC_address (const_char_p, argbuf) + n,
4085 VEC_address (const_char_p, argbuf),
4086 old_length * sizeof (const_char_p));
4097 VEC_replace (const_char_p, argbuf, i, p);
4100 while ((p = strchr (p, ',')) != NULL);
4101 gcc_assert (i == n);
4104 /* Process the spec SPEC and run the commands specified therein.
4105 Returns 0 if the spec is successfully processed; -1 if failed. */
4108 do_spec (const char *spec)
4112 value = do_spec_2 (spec);
4114 /* Force out any unfinished command.
4115 If -pipe, this forces out the last command if it ended in `|'. */
4118 if (VEC_length (const_char_p, argbuf) > 0
4119 && !strcmp (VEC_last (const_char_p, argbuf), "|"))
4120 VEC_pop (const_char_p, argbuf);
4122 set_collect_gcc_options ();
4124 if (VEC_length (const_char_p, argbuf) > 0)
4132 do_spec_2 (const char *spec)
4138 delete_this_arg = 0;
4139 this_is_output_file = 0;
4140 this_is_library_file = 0;
4141 this_is_linker_script = 0;
4142 input_from_pipe = 0;
4143 suffix_subst = NULL;
4145 result = do_spec_1 (spec, 0, NULL);
4153 /* Process the given spec string and add any new options to the end
4154 of the switches/n_switches array. */
4157 do_option_spec (const char *name, const char *spec)
4159 unsigned int i, value_count, value_len;
4160 const char *p, *q, *value;
4161 char *tmp_spec, *tmp_spec_p;
4163 if (configure_default_options[0].name == NULL)
4166 for (i = 0; i < ARRAY_SIZE (configure_default_options); i++)
4167 if (strcmp (configure_default_options[i].name, name) == 0)
4169 if (i == ARRAY_SIZE (configure_default_options))
4172 value = configure_default_options[i].value;
4173 value_len = strlen (value);
4175 /* Compute the size of the final spec. */
4178 while ((p = strstr (p, "%(VALUE)")) != NULL)
4184 /* Replace each %(VALUE) by the specified value. */
4185 tmp_spec = (char *) alloca (strlen (spec) + 1
4186 + value_count * (value_len - strlen ("%(VALUE)")));
4187 tmp_spec_p = tmp_spec;
4189 while ((p = strstr (q, "%(VALUE)")) != NULL)
4191 memcpy (tmp_spec_p, q, p - q);
4192 tmp_spec_p = tmp_spec_p + (p - q);
4193 memcpy (tmp_spec_p, value, value_len);
4194 tmp_spec_p += value_len;
4195 q = p + strlen ("%(VALUE)");
4197 strcpy (tmp_spec_p, q);
4199 do_self_spec (tmp_spec);
4202 /* Process the given spec string and add any new options to the end
4203 of the switches/n_switches array. */
4206 do_self_spec (const char *spec)
4211 do_spec_1 (" ", 0, NULL);
4213 /* Mark %<S switches processed by do_self_spec to be ignored permanently.
4214 do_self_specs adds the replacements to switches array, so it shouldn't
4215 be processed afterwards. */
4216 for (i = 0; i < n_switches; i++)
4217 if ((switches[i].live_cond & SWITCH_IGNORE))
4218 switches[i].live_cond |= SWITCH_IGNORE_PERMANENTLY;
4220 if (VEC_length (const_char_p, argbuf) > 0)
4222 const char **argbuf_copy;
4223 struct cl_decoded_option *decoded_options;
4224 struct cl_option_handlers handlers;
4225 unsigned int decoded_options_count;
4228 /* Create a copy of argbuf with a dummy argv[0] entry for
4229 decode_cmdline_options_to_array. */
4230 argbuf_copy = XNEWVEC (const char *,
4231 VEC_length (const_char_p, argbuf) + 1);
4232 argbuf_copy[0] = "";
4233 memcpy (argbuf_copy + 1, VEC_address (const_char_p, argbuf),
4234 VEC_length (const_char_p, argbuf) * sizeof (const char *));
4236 decode_cmdline_options_to_array (VEC_length (const_char_p, argbuf) + 1,
4238 CL_DRIVER, &decoded_options,
4239 &decoded_options_count);
4241 set_option_handlers (&handlers);
4243 for (j = 1; j < decoded_options_count; j++)
4245 switch (decoded_options[j].opt_index)
4247 case OPT_SPECIAL_input_file:
4248 /* Specs should only generate options, not input
4250 if (strcmp (decoded_options[j].arg, "-") != 0)
4251 fatal_error ("switch %qs does not start with %<-%>",
4252 decoded_options[j].arg);
4254 fatal_error ("spec-generated switch is just %<-%>");
4257 case OPT_fcompare_debug_second:
4258 case OPT_fcompare_debug:
4259 case OPT_fcompare_debug_:
4261 /* Avoid duplicate processing of some options from
4262 compare-debug specs; just save them here. */
4263 save_switch (decoded_options[j].canonical_option[0],
4264 (decoded_options[j].canonical_option_num_elements
4266 &decoded_options[j].canonical_option[1], false);
4270 read_cmdline_option (&global_options, &global_options_set,
4271 decoded_options + j, UNKNOWN_LOCATION,
4272 CL_DRIVER, &handlers, global_dc);
4278 switches[n_switches].part1 = 0;
4282 /* Callback for processing %D and %I specs. */
4284 struct spec_path_info {
4289 bool separate_options;
4293 spec_path (char *path, void *data)
4295 struct spec_path_info *info = (struct spec_path_info *) data;
4299 if (info->omit_relative && !IS_ABSOLUTE_PATH (path))
4302 if (info->append_len != 0)
4304 len = strlen (path);
4305 memcpy (path + len, info->append, info->append_len + 1);
4308 if (!is_directory (path, true))
4311 do_spec_1 (info->option, 1, NULL);
4312 if (info->separate_options)
4313 do_spec_1 (" ", 0, NULL);
4315 if (info->append_len == 0)
4317 len = strlen (path);
4318 save = path[len - 1];
4319 if (IS_DIR_SEPARATOR (path[len - 1]))
4320 path[len - 1] = '\0';
4323 do_spec_1 (path, 1, NULL);
4324 do_spec_1 (" ", 0, NULL);
4326 /* Must not damage the original path. */
4327 if (info->append_len == 0)
4328 path[len - 1] = save;
4333 /* Create a temporary FILE with the contents of ARGV. Add @FILE to the
4337 create_at_file (char **argv)
4339 char *temp_file = make_temp_file ("");
4340 char *at_argument = concat ("@", temp_file, NULL);
4341 FILE *f = fopen (temp_file, "w");
4345 fatal_error ("could not open temporary response file %s",
4348 status = writeargv (argv, f);
4351 fatal_error ("could not write to temporary response file %s",
4354 status = fclose (f);
4357 fatal_error ("could not close temporary response file %s",
4360 store_arg (at_argument, 0, 0);
4362 record_temp_file (temp_file, !save_temps_flag, !save_temps_flag);
4365 /* True if we should compile INFILE. */
4368 compile_input_file_p (struct infile *infile)
4370 if ((!infile->language) || (infile->language[0] != '*'))
4371 if (infile->incompiler == input_file_compiler)
4376 /* Process each member of VEC as a spec. */
4379 do_specs_vec (VEC(char_p,heap) *vec)
4384 FOR_EACH_VEC_ELT (char_p, vec, ix, opt)
4386 do_spec_1 (opt, 1, NULL);
4387 /* Make each accumulated option a separate argument. */
4388 do_spec_1 (" ", 0, NULL);
4392 /* Process the sub-spec SPEC as a portion of a larger spec.
4393 This is like processing a whole spec except that we do
4394 not initialize at the beginning and we do not supply a
4395 newline by default at the end.
4396 INSWITCH nonzero means don't process %-sequences in SPEC;
4397 in this case, % is treated as an ordinary character.
4398 This is used while substituting switches.
4399 INSWITCH nonzero also causes SPC not to terminate an argument.
4401 Value is zero unless a line was finished
4402 and the command on that line reported an error. */
4405 do_spec_1 (const char *spec, int inswitch, const char *soft_matched_part)
4407 const char *p = spec;
4413 /* If substituting a switch, treat all chars like letters.
4414 Otherwise, NL, SPC, TAB and % are special. */
4415 switch (inswitch ? 'a' : c)
4420 if (VEC_length (const_char_p, argbuf) > 0
4421 && !strcmp (VEC_last (const_char_p, argbuf), "|"))
4423 /* A `|' before the newline means use a pipe here,
4424 but only if -pipe was specified.
4425 Otherwise, execute now and don't pass the `|' as an arg. */
4428 input_from_pipe = 1;
4432 VEC_pop (const_char_p, argbuf);
4435 set_collect_gcc_options ();
4437 if (VEC_length (const_char_p, argbuf) > 0)
4443 /* Reinitialize for a new command, and for a new argument. */
4446 delete_this_arg = 0;
4447 this_is_output_file = 0;
4448 this_is_library_file = 0;
4449 this_is_linker_script = 0;
4450 input_from_pipe = 0;
4457 obstack_1grow (&obstack, c);
4465 /* Reinitialize for a new argument. */
4466 delete_this_arg = 0;
4467 this_is_output_file = 0;
4468 this_is_library_file = 0;
4469 this_is_linker_script = 0;
4476 fatal_error ("spec %qs invalid", spec);
4479 if (save_temps_length)
4480 obstack_grow (&obstack, save_temps_prefix, save_temps_length);
4482 obstack_grow (&obstack, input_basename, basename_length);
4483 if (compare_debug < 0)
4484 obstack_grow (&obstack, ".gk", 3);
4489 if (save_temps_length)
4490 obstack_grow (&obstack, save_temps_prefix, save_temps_length);
4492 obstack_grow (&obstack, input_basename, suffixed_basename_length);
4493 if (compare_debug < 0)
4494 obstack_grow (&obstack, ".gk", 3);
4499 delete_this_arg = 2;
4502 /* Dump out the directories specified with LIBRARY_PATH,
4503 followed by the absolute directories
4504 that we search for startfiles. */
4507 struct spec_path_info info;
4510 info.append_len = 0;
4511 #ifdef RELATIVE_PREFIX_NOT_LINKDIR
4512 /* Used on systems which record the specified -L dirs
4513 and use them to search for dynamic linking.
4514 Relative directories always come from -B,
4515 and it is better not to use them for searching
4516 at run time. In particular, stage1 loses. */
4517 info.omit_relative = true;
4519 info.omit_relative = false;
4521 info.separate_options = false;
4523 for_each_path (&startfile_prefixes, true, 0, spec_path, &info);
4528 /* %efoo means report an error with `foo' as error message
4529 and don't execute any more commands for this file. */
4533 while (*p != 0 && *p != '\n')
4535 buf = (char *) alloca (p - q + 1);
4536 strncpy (buf, q, p - q);
4538 error ("%s", _(buf));
4543 /* %nfoo means report a notice with `foo' on stderr. */
4547 while (*p != 0 && *p != '\n')
4549 buf = (char *) alloca (p - q + 1);
4550 strncpy (buf, q, p - q);
4552 inform (0, "%s", _(buf));
4562 /* If save_temps_flag is off, and the HOST_BIT_BUCKET is
4563 defined, and it is not a directory, and it is
4564 writable, use it. Otherwise, treat this like any
4565 other temporary file. */
4567 if ((!save_temps_flag)
4568 && (stat (HOST_BIT_BUCKET, &st) == 0) && (!S_ISDIR (st.st_mode))
4569 && (access (HOST_BIT_BUCKET, W_OK) == 0))
4571 obstack_grow (&obstack, HOST_BIT_BUCKET,
4572 strlen (HOST_BIT_BUCKET));
4573 delete_this_arg = 0;
4578 goto create_temp_file;
4582 obstack_1grow (&obstack, '-');
4583 delete_this_arg = 0;
4586 /* consume suffix */
4587 while (*p == '.' || ISALNUM ((unsigned char) *p))
4589 if (p[0] == '%' && p[1] == 'O')
4594 goto create_temp_file;
4598 /* consume suffix */
4599 while (*p == '.' || ISALNUM ((unsigned char) *p))
4601 if (p[0] == '%' && p[1] == 'O')
4606 goto create_temp_file;
4612 struct temp_name *t;
4614 const char *suffix = p;
4615 char *saved_suffix = NULL;
4617 while (*p == '.' || ISALNUM ((unsigned char) *p))
4619 suffix_length = p - suffix;
4620 if (p[0] == '%' && p[1] == 'O')
4623 /* We don't support extra suffix characters after %O. */
4624 if (*p == '.' || ISALNUM ((unsigned char) *p))
4625 fatal_error ("spec %qs has invalid %<%%0%c%>", spec, *p);
4626 if (suffix_length == 0)
4627 suffix = TARGET_OBJECT_SUFFIX;
4631 = XNEWVEC (char, suffix_length
4632 + strlen (TARGET_OBJECT_SUFFIX));
4633 strncpy (saved_suffix, suffix, suffix_length);
4634 strcpy (saved_suffix + suffix_length,
4635 TARGET_OBJECT_SUFFIX);
4637 suffix_length += strlen (TARGET_OBJECT_SUFFIX);
4640 if (compare_debug < 0)
4642 suffix = concat (".gk", suffix, NULL);
4646 /* If -save-temps=obj and -o were specified, use that for the
4648 if (save_temps_length)
4651 temp_filename_length
4652 = save_temps_length + suffix_length + 1;
4653 tmp = (char *) alloca (temp_filename_length);
4654 memcpy (tmp, save_temps_prefix, save_temps_length);
4655 memcpy (tmp + save_temps_length, suffix, suffix_length);
4656 tmp[save_temps_length + suffix_length] = '\0';
4657 temp_filename = save_string (tmp,
4658 temp_filename_length + 1);
4659 obstack_grow (&obstack, temp_filename,
4660 temp_filename_length);
4662 delete_this_arg = 0;
4666 /* If the gcc_input_filename has the same suffix specified
4667 for the %g, %u, or %U, and -save-temps is specified,
4668 we could end up using that file as an intermediate
4669 thus clobbering the user's source file (.e.g.,
4670 gcc -save-temps foo.s would clobber foo.s with the
4671 output of cpp0). So check for this condition and
4672 generate a temp file as the intermediate. */
4674 if (save_temps_flag)
4677 temp_filename_length = basename_length + suffix_length + 1;
4678 tmp = (char *) alloca (temp_filename_length);
4679 memcpy (tmp, input_basename, basename_length);
4680 memcpy (tmp + basename_length, suffix, suffix_length);
4681 tmp[basename_length + suffix_length] = '\0';
4682 temp_filename = tmp;
4684 if (strcmp (temp_filename, gcc_input_filename) != 0)
4686 #ifndef HOST_LACKS_INODE_NUMBERS
4687 struct stat st_temp;
4689 /* Note, set_input() resets input_stat_set to 0. */
4690 if (input_stat_set == 0)
4692 input_stat_set = stat (gcc_input_filename,
4694 if (input_stat_set >= 0)
4698 /* If we have the stat for the gcc_input_filename
4699 and we can do the stat for the temp_filename
4700 then the they could still refer to the same
4701 file if st_dev/st_ino's are the same. */
4702 if (input_stat_set != 1
4703 || stat (temp_filename, &st_temp) < 0
4704 || input_stat.st_dev != st_temp.st_dev
4705 || input_stat.st_ino != st_temp.st_ino)
4707 /* Just compare canonical pathnames. */
4708 char* input_realname = lrealpath (gcc_input_filename);
4709 char* temp_realname = lrealpath (temp_filename);
4710 bool files_differ = strcmp (input_realname, temp_realname);
4711 free (input_realname);
4712 free (temp_realname);
4716 temp_filename = save_string (temp_filename,
4717 temp_filename_length + 1);
4718 obstack_grow (&obstack, temp_filename,
4719 temp_filename_length);
4721 delete_this_arg = 0;
4727 /* See if we already have an association of %g/%u/%U and
4729 for (t = temp_names; t; t = t->next)
4730 if (t->length == suffix_length
4731 && strncmp (t->suffix, suffix, suffix_length) == 0
4732 && t->unique == (c == 'u' || c == 'U' || c == 'j'))
4735 /* Make a new association if needed. %u and %j
4737 if (t == 0 || c == 'u' || c == 'j')
4741 t = XNEW (struct temp_name);
4742 t->next = temp_names;
4745 t->length = suffix_length;
4748 t->suffix = saved_suffix;
4749 saved_suffix = NULL;
4752 t->suffix = save_string (suffix, suffix_length);
4753 t->unique = (c == 'u' || c == 'U' || c == 'j');
4754 temp_filename = make_temp_file (t->suffix);
4755 temp_filename_length = strlen (temp_filename);
4756 t->filename = temp_filename;
4757 t->filename_length = temp_filename_length;
4761 free (saved_suffix);
4763 obstack_grow (&obstack, t->filename, t->filename_length);
4764 delete_this_arg = 1;
4772 if (at_file_supplied)
4774 /* We are going to expand `%i' to `@FILE', where FILE
4775 is a newly-created temporary filename. The filenames
4776 that would usually be expanded in place of %o will be
4777 written to the temporary file. */
4782 for (i = 0; i < n_infiles; i++)
4783 if (compile_input_file_p (&infiles[i]))
4786 argv = (char **) alloca (sizeof (char *) * (n_files + 1));
4788 /* Copy the strings over. */
4789 for (i = 0, j = 0; i < n_infiles; i++)
4790 if (compile_input_file_p (&infiles[i]))
4792 argv[j] = CONST_CAST (char *, infiles[i].name);
4793 infiles[i].compiled = true;
4798 create_at_file (argv);
4801 for (i = 0; (int) i < n_infiles; i++)
4802 if (compile_input_file_p (&infiles[i]))
4804 store_arg (infiles[i].name, 0, 0);
4805 infiles[i].compiled = true;
4810 obstack_grow (&obstack, gcc_input_filename,
4811 input_filename_length);
4818 struct spec_path_info info;
4822 do_spec_1 ("-imultilib", 1, NULL);
4823 /* Make this a separate argument. */
4824 do_spec_1 (" ", 0, NULL);
4825 do_spec_1 (multilib_dir, 1, NULL);
4826 do_spec_1 (" ", 0, NULL);
4829 if (gcc_exec_prefix)
4831 do_spec_1 ("-iprefix", 1, NULL);
4832 /* Make this a separate argument. */
4833 do_spec_1 (" ", 0, NULL);
4834 do_spec_1 (gcc_exec_prefix, 1, NULL);
4835 do_spec_1 (" ", 0, NULL);
4838 if (target_system_root_changed ||
4839 (target_system_root && target_sysroot_hdrs_suffix))
4841 do_spec_1 ("-isysroot", 1, NULL);
4842 /* Make this a separate argument. */
4843 do_spec_1 (" ", 0, NULL);
4844 do_spec_1 (target_system_root, 1, NULL);
4845 if (target_sysroot_hdrs_suffix)
4846 do_spec_1 (target_sysroot_hdrs_suffix, 1, NULL);
4847 do_spec_1 (" ", 0, NULL);
4850 info.option = "-isystem";
4851 info.append = "include";
4852 info.append_len = strlen (info.append);
4853 info.omit_relative = false;
4854 info.separate_options = true;
4856 for_each_path (&include_prefixes, false, info.append_len,
4859 info.append = "include-fixed";
4860 if (*sysroot_hdrs_suffix_spec)
4861 info.append = concat (info.append, dir_separator_str,
4862 multilib_dir, NULL);
4863 info.append_len = strlen (info.append);
4864 for_each_path (&include_prefixes, false, info.append_len,
4871 int max = n_infiles;
4872 max += lang_specific_extra_outfiles;
4874 if (HAVE_GNU_LD && at_file_supplied)
4876 /* We are going to expand `%o' to `@FILE', where FILE
4877 is a newly-created temporary filename. The filenames
4878 that would usually be expanded in place of %o will be
4879 written to the temporary file. */
4884 /* Convert OUTFILES into a form suitable for writeargv. */
4886 /* Determine how many are non-NULL. */
4887 for (n_files = 0, i = 0; i < max; i++)
4888 n_files += outfiles[i] != NULL;
4890 argv = (char **) alloca (sizeof (char *) * (n_files + 1));
4892 /* Copy the strings over. */
4893 for (i = 0, j = 0; i < max; i++)
4896 argv[j] = CONST_CAST (char *, outfiles[i]);
4901 create_at_file (argv);
4904 for (i = 0; i < max; i++)
4906 store_arg (outfiles[i], 0, 0);
4911 obstack_grow (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX));
4916 this_is_library_file = 1;
4920 this_is_linker_script = 1;
4924 outfiles[input_file_number] = NULL;
4928 this_is_output_file = 1;
4933 unsigned int cur_index = VEC_length (const_char_p, argbuf);
4934 /* Handle the {...} following the %W. */
4936 fatal_error ("spec %qs has invalid %<%%W%c%>", spec, *p);
4937 p = handle_braces (p + 1);
4941 /* If any args were output, mark the last one for deletion
4943 if (VEC_length (const_char_p, argbuf) != cur_index)
4944 record_temp_file (VEC_last (const_char_p, argbuf), 0, 1);
4948 /* %x{OPTION} records OPTION for %X to output. */
4956 /* Skip past the option value and make a copy. */
4958 fatal_error ("spec %qs has invalid %<%%x%c%>", spec, *p);
4961 string = save_string (p1 + 1, p - p1 - 2);
4963 /* See if we already recorded this option. */
4964 FOR_EACH_VEC_ELT (char_p, linker_options, ix, opt)
4965 if (! strcmp (string, opt))
4971 /* This option is new; add it. */
4972 add_linker_option (string, strlen (string));
4976 /* Dump out the options accumulated previously using %x. */
4978 do_specs_vec (linker_options);
4981 /* Dump out the options accumulated previously using -Wa,. */
4983 do_specs_vec (assembler_options);
4986 /* Dump out the options accumulated previously using -Wp,. */
4988 do_specs_vec (preprocessor_options);
4991 /* Here are digits and numbers that just process
4992 a certain constant string as a spec. */
4995 value = do_spec_1 (cc1_spec, 0, NULL);
5001 value = do_spec_1 (cc1plus_spec, 0, NULL);
5007 value = do_spec_1 (asm_spec, 0, NULL);
5013 value = do_spec_1 (asm_final_spec, 0, NULL);
5020 const char *const spec
5021 = (input_file_compiler->cpp_spec
5022 ? input_file_compiler->cpp_spec
5024 value = do_spec_1 (spec, 0, NULL);
5031 value = do_spec_1 (endfile_spec, 0, NULL);
5037 value = do_spec_1 (link_spec, 0, NULL);
5043 value = do_spec_1 (lib_spec, 0, NULL);
5049 value = do_spec_1 (libgcc_spec, 0, NULL);
5055 /* We assume there is a directory
5056 separator at the end of this string. */
5057 if (target_system_root)
5059 obstack_grow (&obstack, target_system_root,
5060 strlen (target_system_root));
5061 if (target_sysroot_suffix)
5062 obstack_grow (&obstack, target_sysroot_suffix,
5063 strlen (target_sysroot_suffix));
5068 value = do_spec_1 (startfile_spec, 0, NULL);
5073 /* Here we define characters other than letters and digits. */
5076 p = handle_braces (p);
5082 p = handle_spec_function (p);
5088 obstack_1grow (&obstack, '%');
5095 while (p[len] && p[len] != ' ' && p[len] != '%')
5097 suffix_subst = save_string (p - 1, len + 1);
5102 /* Henceforth ignore the option(s) matching the pattern
5108 int have_wildcard = 0;
5113 switch_option = SWITCH_IGNORE | SWITCH_KEEP_FOR_GCC;
5115 switch_option = SWITCH_IGNORE;
5117 while (p[len] && p[len] != ' ' && p[len] != '\t')
5120 if (p[len-1] == '*')
5123 for (i = 0; i < n_switches; i++)
5124 if (!strncmp (switches[i].part1, p, len - have_wildcard)
5125 && (have_wildcard || switches[i].part1[len] == '\0'))
5127 switches[i].live_cond |= switch_option;
5128 switches[i].validated = 1;
5136 if (soft_matched_part)
5138 do_spec_1 (soft_matched_part, 1, NULL);
5139 do_spec_1 (" ", 0, NULL);
5142 /* Catch the case where a spec string contains something like
5143 '%{foo:%*}'. i.e. there is no * in the pattern on the left
5144 hand side of the :. */
5145 error ("spec failure: %<%%*%> has not been initialized by pattern match");
5148 /* Process a string found as the value of a spec given by name.
5149 This feature allows individual machine descriptions
5150 to add and use their own specs.
5151 %[...] modifies -D options the way %P does;
5152 %(...) uses the spec unmodified. */
5154 warning (0, "use of obsolete %%[ operator in specs");
5157 const char *name = p;
5158 struct spec_list *sl;
5161 /* The string after the S/P is the name of a spec that is to be
5163 while (*p && *p != ')' && *p != ']')
5166 /* See if it's in the list. */
5167 for (len = p - name, sl = specs; sl; sl = sl->next)
5168 if (sl->name_len == len && !strncmp (sl->name, name, len))
5170 name = *(sl->ptr_spec);
5172 fnotice (stderr, "Processing spec %c%s%c, which is '%s'\n",
5173 c, sl->name, (c == '(') ? ')' : ']', name);
5182 value = do_spec_1 (name, 0, NULL);
5188 char *x = (char *) alloca (strlen (name) * 2 + 1);
5190 const char *y = name;
5193 /* Copy all of NAME into BUF, but put __ after
5194 every -D and at the end of each arg. */
5197 if (! strncmp (y, "-D", 2))
5208 && (*y == ' ' || *y == '\t' || *y == '='
5209 || *y == '}' || *y == 0))
5222 value = do_spec_1 (buf, 0, NULL);
5228 /* Discard the closing paren or bracket. */
5235 error ("spec failure: unrecognized spec option %qc", c);
5241 /* Backslash: treat next character as ordinary. */
5246 /* Ordinary character: put it into the current argument. */
5247 obstack_1grow (&obstack, c);
5251 /* End of string. If we are processing a spec function, we need to
5252 end any pending argument. */
5253 if (processing_spec_function)
5259 /* Look up a spec function. */
5261 static const struct spec_function *
5262 lookup_spec_function (const char *name)
5264 const struct spec_function *sf;
5266 for (sf = static_spec_functions; sf->name != NULL; sf++)
5267 if (strcmp (sf->name, name) == 0)
5273 /* Evaluate a spec function. */
5276 eval_spec_function (const char *func, const char *args)
5278 const struct spec_function *sf;
5279 const char *funcval;
5281 /* Saved spec processing context. */
5282 VEC(const_char_p,heap) *save_argbuf;
5285 int save_delete_this_arg;
5286 int save_this_is_output_file;
5287 int save_this_is_library_file;
5288 int save_input_from_pipe;
5289 int save_this_is_linker_script;
5290 const char *save_suffix_subst;
5293 sf = lookup_spec_function (func);
5295 fatal_error ("unknown spec function %qs", func);
5297 /* Push the spec processing context. */
5298 save_argbuf = argbuf;
5300 save_arg_going = arg_going;
5301 save_delete_this_arg = delete_this_arg;
5302 save_this_is_output_file = this_is_output_file;
5303 save_this_is_library_file = this_is_library_file;
5304 save_this_is_linker_script = this_is_linker_script;
5305 save_input_from_pipe = input_from_pipe;
5306 save_suffix_subst = suffix_subst;
5308 /* Create a new spec processing context, and build the function
5312 if (do_spec_2 (args) < 0)
5313 fatal_error ("error in args to spec function %qs", func);
5315 /* argbuf_index is an index for the next argument to be inserted, and
5316 so contains the count of the args already inserted. */
5318 funcval = (*sf->func) (VEC_length (const_char_p, argbuf),
5319 VEC_address (const_char_p, argbuf));
5321 /* Pop the spec processing context. */
5322 VEC_free (const_char_p, heap, argbuf);
5323 argbuf = save_argbuf;
5325 arg_going = save_arg_going;
5326 delete_this_arg = save_delete_this_arg;
5327 this_is_output_file = save_this_is_output_file;
5328 this_is_library_file = save_this_is_library_file;
5329 this_is_linker_script = save_this_is_linker_script;
5330 input_from_pipe = save_input_from_pipe;
5331 suffix_subst = save_suffix_subst;
5336 /* Handle a spec function call of the form:
5340 ARGS is processed as a spec in a separate context and split into an
5341 argument vector in the normal fashion. The function returns a string
5342 containing a spec which we then process in the caller's context, or
5343 NULL if no processing is required. */
5346 handle_spec_function (const char *p)
5349 const char *endp, *funcval;
5352 processing_spec_function++;
5354 /* Get the function name. */
5355 for (endp = p; *endp != '\0'; endp++)
5357 if (*endp == '(') /* ) */
5359 /* Only allow [A-Za-z0-9], -, and _ in function names. */
5360 if (!ISALNUM (*endp) && !(*endp == '-' || *endp == '_'))
5361 fatal_error ("malformed spec function name");
5363 if (*endp != '(') /* ) */
5364 fatal_error ("no arguments for spec function");
5365 func = save_string (p, endp - p);
5368 /* Get the arguments. */
5369 for (count = 0; *endp != '\0'; endp++)
5378 else if (*endp == '(') /* ) */
5383 fatal_error ("malformed spec function arguments");
5384 args = save_string (p, endp - p);
5387 /* p now points to just past the end of the spec function expression. */
5389 funcval = eval_spec_function (func, args);
5390 if (funcval != NULL && do_spec_1 (funcval, 0, NULL) < 0)
5396 processing_spec_function--;
5401 /* Inline subroutine of handle_braces. Returns true if the current
5402 input suffix matches the atom bracketed by ATOM and END_ATOM. */
5404 input_suffix_matches (const char *atom, const char *end_atom)
5406 return (input_suffix
5407 && !strncmp (input_suffix, atom, end_atom - atom)
5408 && input_suffix[end_atom - atom] == '\0');
5411 /* Subroutine of handle_braces. Returns true if the current
5412 input file's spec name matches the atom bracketed by ATOM and END_ATOM. */
5414 input_spec_matches (const char *atom, const char *end_atom)
5416 return (input_file_compiler
5417 && input_file_compiler->suffix
5418 && input_file_compiler->suffix[0] != '\0'
5419 && !strncmp (input_file_compiler->suffix + 1, atom,
5421 && input_file_compiler->suffix[end_atom - atom + 1] == '\0');
5424 /* Subroutine of handle_braces. Returns true if a switch
5425 matching the atom bracketed by ATOM and END_ATOM appeared on the
5428 switch_matches (const char *atom, const char *end_atom, int starred)
5431 int len = end_atom - atom;
5432 int plen = starred ? len : -1;
5434 for (i = 0; i < n_switches; i++)
5435 if (!strncmp (switches[i].part1, atom, len)
5436 && (starred || switches[i].part1[len] == '\0')
5437 && check_live_switch (i, plen))
5443 /* Inline subroutine of handle_braces. Mark all of the switches which
5444 match ATOM (extends to END_ATOM; STARRED indicates whether there
5445 was a star after the atom) for later processing. */
5447 mark_matching_switches (const char *atom, const char *end_atom, int starred)
5450 int len = end_atom - atom;
5451 int plen = starred ? len : -1;
5453 for (i = 0; i < n_switches; i++)
5454 if (!strncmp (switches[i].part1, atom, len)
5455 && (starred || switches[i].part1[len] == '\0')
5456 && check_live_switch (i, plen))
5457 switches[i].ordering = 1;
5460 /* Inline subroutine of handle_braces. Process all the currently
5461 marked switches through give_switch, and clear the marks. */
5463 process_marked_switches (void)
5467 for (i = 0; i < n_switches; i++)
5468 if (switches[i].ordering == 1)
5470 switches[i].ordering = 0;
5475 /* Handle a %{ ... } construct. P points just inside the leading {.
5476 Returns a pointer one past the end of the brace block, or 0
5477 if we call do_spec_1 and that returns -1. */
5480 handle_braces (const char *p)
5482 const char *atom, *end_atom;
5483 const char *d_atom = NULL, *d_end_atom = NULL;
5484 const char *orig = p;
5492 bool a_must_be_last = false;
5493 bool ordered_set = false;
5494 bool disjunct_set = false;
5495 bool disj_matched = false;
5496 bool disj_starred = true;
5497 bool n_way_choice = false;
5498 bool n_way_matched = false;
5500 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
5507 /* Scan one "atom" (S in the description above of %{}, possibly
5508 with '!', '.', '@', ',', or '*' modifiers). */
5510 a_is_suffix = false;
5511 a_is_starred = false;
5512 a_is_negated = false;
5513 a_is_spectype = false;
5517 p++, a_is_negated = true;
5521 p++, a_is_suffix = true;
5523 p++, a_is_spectype = true;
5526 while (ISIDNUM(*p) || *p == '-' || *p == '+' || *p == '='
5527 || *p == ',' || *p == '.' || *p == '@')
5532 p++, a_is_starred = 1;
5538 /* Substitute the switch(es) indicated by the current atom. */
5540 if (disjunct_set || n_way_choice || a_is_negated || a_is_suffix
5541 || a_is_spectype || atom == end_atom)
5544 mark_matching_switches (atom, end_atom, a_is_starred);
5547 process_marked_switches ();
5551 /* Substitute some text if the current atom appears as a switch
5553 disjunct_set = true;
5557 if (atom == end_atom)
5559 if (!n_way_choice || disj_matched || *p == '|'
5560 || a_is_negated || a_is_suffix || a_is_spectype
5564 /* An empty term may appear as the last choice of an
5565 N-way choice set; it means "otherwise". */
5566 a_must_be_last = true;
5567 disj_matched = !n_way_matched;
5568 disj_starred = false;
5572 if ((a_is_suffix || a_is_spectype) && a_is_starred)
5576 disj_starred = false;
5578 /* Don't bother testing this atom if we already have a
5580 if (!disj_matched && !n_way_matched)
5583 a_matched = input_suffix_matches (atom, end_atom);
5584 else if (a_is_spectype)
5585 a_matched = input_spec_matches (atom, end_atom);
5587 a_matched = switch_matches (atom, end_atom, a_is_starred);
5589 if (a_matched != a_is_negated)
5591 disj_matched = true;
5593 d_end_atom = end_atom;
5600 /* Found the body, that is, the text to substitute if the
5601 current disjunction matches. */
5602 p = process_brace_body (p + 1, d_atom, d_end_atom, disj_starred,
5603 disj_matched && !n_way_matched);
5607 /* If we have an N-way choice, reset state for the next
5611 n_way_choice = true;
5612 n_way_matched |= disj_matched;
5613 disj_matched = false;
5614 disj_starred = true;
5615 d_atom = d_end_atom = NULL;
5624 while (*p++ != '}');
5629 fatal_error ("braced spec %qs is invalid at %qc", orig, *p);
5634 /* Subroutine of handle_braces. Scan and process a brace substitution body
5635 (X in the description of %{} syntax). P points one past the colon;
5636 ATOM and END_ATOM bracket the first atom which was found to be true
5637 (present) in the current disjunction; STARRED indicates whether all
5638 the atoms in the current disjunction were starred (for syntax validation);
5639 MATCHED indicates whether the disjunction matched or not, and therefore
5640 whether or not the body is to be processed through do_spec_1 or just
5641 skipped. Returns a pointer to the closing } or ;, or 0 if do_spec_1
5645 process_brace_body (const char *p, const char *atom, const char *end_atom,
5646 int starred, int matched)
5648 const char *body, *end_body;
5649 unsigned int nesting_level;
5650 bool have_subst = false;
5652 /* Locate the closing } or ;, honoring nested braces.
5653 Trim trailing whitespace. */
5662 if (!--nesting_level)
5665 else if (*p == ';' && nesting_level == 1)
5667 else if (*p == '%' && p[1] == '*' && nesting_level == 1)
5669 else if (*p == '\0')
5675 while (end_body[-1] == ' ' || end_body[-1] == '\t')
5678 if (have_subst && !starred)
5683 /* Copy the substitution body to permanent storage and execute it.
5684 If have_subst is false, this is a simple matter of running the
5685 body through do_spec_1... */
5686 char *string = save_string (body, end_body - body);
5689 if (do_spec_1 (string, 0, NULL) < 0)
5694 /* ... but if have_subst is true, we have to process the
5695 body once for each matching switch, with %* set to the
5696 variant part of the switch. */
5697 unsigned int hard_match_len = end_atom - atom;
5700 for (i = 0; i < n_switches; i++)
5701 if (!strncmp (switches[i].part1, atom, hard_match_len)
5702 && check_live_switch (i, hard_match_len))
5704 if (do_spec_1 (string, 0,
5705 &switches[i].part1[hard_match_len]) < 0)
5707 /* Pass any arguments this switch has. */
5709 suffix_subst = NULL;
5717 fatal_error ("braced spec body %qs is invalid", body);
5720 /* Return 0 iff switch number SWITCHNUM is obsoleted by a later switch
5721 on the command line. PREFIX_LENGTH is the length of XXX in an {XXX*}
5722 spec, or -1 if either exact match or %* is used.
5724 A -O switch is obsoleted by a later -O switch. A -f, -m, or -W switch
5725 whose value does not begin with "no-" is obsoleted by the same value
5726 with the "no-", similarly for a switch with the "no-" prefix. */
5729 check_live_switch (int switchnum, int prefix_length)
5731 const char *name = switches[switchnum].part1;
5734 /* If we already processed this switch and determined if it was
5735 live or not, return our past determination. */
5736 if (switches[switchnum].live_cond != 0)
5737 return ((switches[switchnum].live_cond & SWITCH_LIVE) != 0
5738 && (switches[switchnum].live_cond & SWITCH_FALSE) == 0
5739 && (switches[switchnum].live_cond & SWITCH_IGNORE_PERMANENTLY)
5742 /* In the common case of {<at-most-one-letter>*}, a negating
5743 switch would always match, so ignore that case. We will just
5744 send the conflicting switches to the compiler phase. */
5745 if (prefix_length >= 0 && prefix_length <= 1)
5748 /* Now search for duplicate in a manner that depends on the name. */
5752 for (i = switchnum + 1; i < n_switches; i++)
5753 if (switches[i].part1[0] == 'O')
5755 switches[switchnum].validated = 1;
5756 switches[switchnum].live_cond = SWITCH_FALSE;
5761 case 'W': case 'f': case 'm':
5762 if (! strncmp (name + 1, "no-", 3))
5764 /* We have Xno-YYY, search for XYYY. */
5765 for (i = switchnum + 1; i < n_switches; i++)
5766 if (switches[i].part1[0] == name[0]
5767 && ! strcmp (&switches[i].part1[1], &name[4]))
5769 switches[switchnum].validated = 1;
5770 switches[switchnum].live_cond = SWITCH_FALSE;
5776 /* We have XYYY, search for Xno-YYY. */
5777 for (i = switchnum + 1; i < n_switches; i++)
5778 if (switches[i].part1[0] == name[0]
5779 && switches[i].part1[1] == 'n'
5780 && switches[i].part1[2] == 'o'
5781 && switches[i].part1[3] == '-'
5782 && !strcmp (&switches[i].part1[4], &name[1]))
5784 switches[switchnum].validated = 1;
5785 switches[switchnum].live_cond = SWITCH_FALSE;
5792 /* Otherwise the switch is live. */
5793 switches[switchnum].live_cond |= SWITCH_LIVE;
5797 /* Pass a switch to the current accumulating command
5798 in the same form that we received it.
5799 SWITCHNUM identifies the switch; it is an index into
5800 the vector of switches gcc received, which is `switches'.
5801 This cannot fail since it never finishes a command line.
5803 If OMIT_FIRST_WORD is nonzero, then we omit .part1 of the argument. */
5806 give_switch (int switchnum, int omit_first_word)
5808 if ((switches[switchnum].live_cond & SWITCH_IGNORE) != 0)
5811 if (!omit_first_word)
5813 do_spec_1 ("-", 0, NULL);
5814 do_spec_1 (switches[switchnum].part1, 1, NULL);
5817 if (switches[switchnum].args != 0)
5820 for (p = switches[switchnum].args; *p; p++)
5822 const char *arg = *p;
5824 do_spec_1 (" ", 0, NULL);
5827 unsigned length = strlen (arg);
5830 while (length-- && !IS_DIR_SEPARATOR (arg[length]))
5831 if (arg[length] == '.')
5833 (CONST_CAST(char *, arg))[length] = 0;
5837 do_spec_1 (arg, 1, NULL);
5839 (CONST_CAST(char *, arg))[length] = '.';
5840 do_spec_1 (suffix_subst, 1, NULL);
5843 do_spec_1 (arg, 1, NULL);
5847 do_spec_1 (" ", 0, NULL);
5848 switches[switchnum].validated = 1;
5851 /* Search for a file named NAME trying various prefixes including the
5852 user's -B prefix and some standard ones.
5853 Return the absolute file name found. If nothing is found, return NAME. */
5856 find_file (const char *name)
5858 char *newname = find_a_file (&startfile_prefixes, name, R_OK, true);
5859 return newname ? newname : name;
5862 /* Determine whether a directory exists. If LINKER, return 0 for
5863 certain fixed names not needed by the linker. */
5866 is_directory (const char *path1, bool linker)
5873 /* Ensure the string ends with "/.". The resulting path will be a
5874 directory even if the given path is a symbolic link. */
5875 len1 = strlen (path1);
5876 path = (char *) alloca (3 + len1);
5877 memcpy (path, path1, len1);
5879 if (!IS_DIR_SEPARATOR (cp[-1]))
5880 *cp++ = DIR_SEPARATOR;
5884 /* Exclude directories that the linker is known to search. */
5886 && IS_DIR_SEPARATOR (path[0])
5888 && strncmp (path + 1, "lib", 3) == 0)
5890 && strncmp (path + 1, "usr", 3) == 0
5891 && IS_DIR_SEPARATOR (path[4])
5892 && strncmp (path + 5, "lib", 3) == 0)))
5895 return (stat (path, &st) >= 0 && S_ISDIR (st.st_mode));
5898 /* Set up the various global variables to indicate that we're processing
5899 the input file named FILENAME. */
5902 set_input (const char *filename)
5906 gcc_input_filename = filename;
5907 input_filename_length = strlen (gcc_input_filename);
5908 input_basename = lbasename (gcc_input_filename);
5910 /* Find a suffix starting with the last period,
5911 and set basename_length to exclude that suffix. */
5912 basename_length = strlen (input_basename);
5913 suffixed_basename_length = basename_length;
5914 p = input_basename + basename_length;
5915 while (p != input_basename && *p != '.')
5917 if (*p == '.' && p != input_basename)
5919 basename_length = p - input_basename;
5920 input_suffix = p + 1;
5925 /* If a spec for 'g', 'u', or 'U' is seen with -save-temps then
5926 we will need to do a stat on the gcc_input_filename. The
5927 INPUT_STAT_SET signals that the stat is needed. */
5931 /* On fatal signals, delete all the temporary files. */
5934 fatal_signal (int signum)
5936 signal (signum, SIG_DFL);
5937 delete_failure_queue ();
5938 delete_temp_files ();
5939 /* Get the same signal again, this time not handled,
5940 so its normal effect occurs. */
5941 kill (getpid (), signum);
5944 /* Compare the contents of the two files named CMPFILE[0] and
5945 CMPFILE[1]. Return zero if they're identical, nonzero
5949 compare_files (char *cmpfile[])
5952 FILE *temp[2] = { NULL, NULL };
5958 void *map[2] = { NULL, NULL };
5960 for (i = 0; i < 2; i++)
5964 if (stat (cmpfile[i], &st) < 0 || !S_ISREG (st.st_mode))
5966 error ("%s: could not determine length of compare-debug file %s",
5967 gcc_input_filename, cmpfile[i]);
5972 length[i] = st.st_size;
5975 if (!ret && length[0] != length[1])
5977 error ("%s: -fcompare-debug failure (length)", gcc_input_filename);
5982 for (i = 0; i < 2; i++)
5984 int fd = open (cmpfile[i], O_RDONLY);
5987 error ("%s: could not open compare-debug file %s",
5988 gcc_input_filename, cmpfile[i]);
5993 map[i] = mmap (NULL, length[i], PROT_READ, MAP_PRIVATE, fd, 0);
5996 if (map[i] == (void *) MAP_FAILED)
6005 if (memcmp (map[0], map[1], length[0]) != 0)
6007 error ("%s: -fcompare-debug failure", gcc_input_filename);
6012 for (i = 0; i < 2; i++)
6014 munmap ((caddr_t) map[i], length[i]);
6023 for (i = 0; i < 2; i++)
6025 temp[i] = fopen (cmpfile[i], "r");
6028 error ("%s: could not open compare-debug file %s",
6029 gcc_input_filename, cmpfile[i]);
6035 if (!ret && temp[0] && temp[1])
6039 c0 = fgetc (temp[0]);
6040 c1 = fgetc (temp[1]);
6044 error ("%s: -fcompare-debug failure",
6045 gcc_input_filename);
6054 for (i = 1; i >= 0; i--)
6063 extern int main (int, char **);
6066 main (int argc, char **argv)
6070 int linker_was_run = 0;
6071 int lang_n_infiles = 0;
6072 int num_linker_inputs = 0;
6073 char *explicit_link_files;
6075 char *lto_wrapper_file;
6077 struct user_specs *uptr;
6078 char **old_argv = argv;
6079 struct cl_decoded_option *decoded_options;
6080 unsigned int decoded_options_count;
6082 /* Initialize here, not in definition. The IRIX 6 O32 cc sometimes chokes
6083 on ?: in file-scope variable initializations. */
6084 asm_debug = ASM_DEBUG_SPEC;
6086 p = argv[0] + strlen (argv[0]);
6087 while (p != argv[0] && !IS_DIR_SEPARATOR (p[-1]))
6091 xmalloc_set_program_name (progname);
6093 expandargv (&argc, &argv);
6095 /* Determine if any expansions were made. */
6096 if (argv != old_argv)
6097 at_file_supplied = true;
6099 global_options = global_options_init;
6101 decode_cmdline_options_to_array (argc, CONST_CAST2 (const char **, char **,
6104 &decoded_options, &decoded_options_count);
6106 #ifdef GCC_DRIVER_HOST_INITIALIZATION
6107 /* Perform host dependent initialization when needed. */
6108 GCC_DRIVER_HOST_INITIALIZATION;
6111 /* Unlock the stdio streams. */
6112 unlock_std_streams ();
6114 gcc_init_libintl ();
6116 diagnostic_initialize (global_dc, 0);
6117 if (atexit (delete_temp_files) != 0)
6118 fatal_error ("atexit failed");
6120 if (signal (SIGINT, SIG_IGN) != SIG_IGN)
6121 signal (SIGINT, fatal_signal);
6123 if (signal (SIGHUP, SIG_IGN) != SIG_IGN)
6124 signal (SIGHUP, fatal_signal);
6126 if (signal (SIGTERM, SIG_IGN) != SIG_IGN)
6127 signal (SIGTERM, fatal_signal);
6129 if (signal (SIGPIPE, SIG_IGN) != SIG_IGN)
6130 signal (SIGPIPE, fatal_signal);
6133 /* We *MUST* set SIGCHLD to SIG_DFL so that the wait4() call will
6134 receive the signal. A different setting is inheritable */
6135 signal (SIGCHLD, SIG_DFL);
6138 /* Allocate the argument vector. */
6141 obstack_init (&obstack);
6143 /* Build multilib_select, et. al from the separate lines that make up each
6144 multilib selection. */
6146 const char *const *q = multilib_raw;
6149 obstack_init (&multilib_obstack);
6150 while ((p = *q++) != (char *) 0)
6151 obstack_grow (&multilib_obstack, p, strlen (p));
6153 obstack_1grow (&multilib_obstack, 0);
6154 multilib_select = XOBFINISH (&multilib_obstack, const char *);
6156 q = multilib_matches_raw;
6157 while ((p = *q++) != (char *) 0)
6158 obstack_grow (&multilib_obstack, p, strlen (p));
6160 obstack_1grow (&multilib_obstack, 0);
6161 multilib_matches = XOBFINISH (&multilib_obstack, const char *);
6163 q = multilib_exclusions_raw;
6164 while ((p = *q++) != (char *) 0)
6165 obstack_grow (&multilib_obstack, p, strlen (p));
6167 obstack_1grow (&multilib_obstack, 0);
6168 multilib_exclusions = XOBFINISH (&multilib_obstack, const char *);
6171 for (i = 0; i < ARRAY_SIZE (multilib_defaults_raw); i++)
6174 obstack_1grow (&multilib_obstack, ' ');
6175 obstack_grow (&multilib_obstack,
6176 multilib_defaults_raw[i],
6177 strlen (multilib_defaults_raw[i]));
6181 obstack_1grow (&multilib_obstack, 0);
6182 multilib_defaults = XOBFINISH (&multilib_obstack, const char *);
6185 #ifdef INIT_ENVIRONMENT
6186 /* Set up any other necessary machine specific environment variables. */
6187 xputenv (INIT_ENVIRONMENT);
6190 /* Make a table of what switches there are (switches, n_switches).
6191 Make a table of specified input files (infiles, n_infiles).
6192 Decode switches that are handled locally. */
6194 process_command (decoded_options_count, decoded_options);
6196 /* Initialize the vector of specs to just the default.
6197 This means one element containing 0s, as a terminator. */
6199 compilers = XNEWVAR (struct compiler, sizeof default_compilers);
6200 memcpy (compilers, default_compilers, sizeof default_compilers);
6201 n_compilers = n_default_compilers;
6203 /* Read specs from a file if there is one. */
6205 machine_suffix = concat (spec_machine, dir_separator_str,
6206 spec_version, dir_separator_str, NULL);
6207 just_machine_suffix = concat (spec_machine, dir_separator_str, NULL);
6209 specs_file = find_a_file (&startfile_prefixes, "specs", R_OK, true);
6210 /* Read the specs file unless it is a default one. */
6211 if (specs_file != 0 && strcmp (specs_file, "specs"))
6212 read_specs (specs_file, TRUE);
6216 /* We need to check standard_exec_prefix/just_machine_suffix/specs
6217 for any override of as, ld and libraries. */
6218 specs_file = (char *) alloca (strlen (standard_exec_prefix)
6219 + strlen (just_machine_suffix) + sizeof ("specs"));
6221 strcpy (specs_file, standard_exec_prefix);
6222 strcat (specs_file, just_machine_suffix);
6223 strcat (specs_file, "specs");
6224 if (access (specs_file, R_OK) == 0)
6225 read_specs (specs_file, TRUE);
6227 /* Process any configure-time defaults specified for the command line
6228 options, via OPTION_DEFAULT_SPECS. */
6229 for (i = 0; i < ARRAY_SIZE (option_default_specs); i++)
6230 do_option_spec (option_default_specs[i].name,
6231 option_default_specs[i].spec);
6233 /* Process DRIVER_SELF_SPECS, adding any new options to the end
6234 of the command line. */
6236 for (i = 0; i < ARRAY_SIZE (driver_self_specs); i++)
6237 do_self_spec (driver_self_specs[i]);
6241 enum save_temps save;
6243 if (!compare_debug_second)
6245 n_switches_debug_check[1] = n_switches;
6246 n_switches_alloc_debug_check[1] = n_switches_alloc;
6247 switches_debug_check[1] = XDUPVEC (struct switchstr, switches,
6250 do_self_spec ("%:compare-debug-self-opt()");
6251 n_switches_debug_check[0] = n_switches;
6252 n_switches_alloc_debug_check[0] = n_switches_alloc;
6253 switches_debug_check[0] = switches;
6255 n_switches = n_switches_debug_check[1];
6256 n_switches_alloc = n_switches_alloc_debug_check[1];
6257 switches = switches_debug_check[1];
6260 /* Avoid crash when computing %j in this early. */
6261 save = save_temps_flag;
6262 save_temps_flag = SAVE_TEMPS_NONE;
6264 compare_debug = -compare_debug;
6265 do_self_spec ("%:compare-debug-self-opt()");
6267 save_temps_flag = save;
6269 if (!compare_debug_second)
6271 n_switches_debug_check[1] = n_switches;
6272 n_switches_alloc_debug_check[1] = n_switches_alloc;
6273 switches_debug_check[1] = switches;
6274 compare_debug = -compare_debug;
6275 n_switches = n_switches_debug_check[0];
6276 n_switches_alloc = n_switches_debug_check[0];
6277 switches = switches_debug_check[0];
6281 /* If not cross-compiling, look for executables in the standard
6283 if (*cross_compile == '0')
6285 if (*md_exec_prefix)
6287 add_prefix (&exec_prefixes, md_exec_prefix, "GCC",
6288 PREFIX_PRIORITY_LAST, 0, 0);
6292 /* Process sysroot_suffix_spec. */
6293 if (*sysroot_suffix_spec != 0
6294 && do_spec_2 (sysroot_suffix_spec) == 0)
6296 if (VEC_length (const_char_p, argbuf) > 1)
6297 error ("spec failure: more than one arg to SYSROOT_SUFFIX_SPEC");
6298 else if (VEC_length (const_char_p, argbuf) == 1)
6299 target_sysroot_suffix = xstrdup (VEC_last (const_char_p, argbuf));
6302 #ifdef HAVE_LD_SYSROOT
6303 /* Pass the --sysroot option to the linker, if it supports that. If
6304 there is a sysroot_suffix_spec, it has already been processed by
6305 this point, so target_system_root really is the system root we
6307 if (target_system_root)
6309 obstack_grow (&obstack, "%(sysroot_spec) ", strlen ("%(sysroot_spec) "));
6310 obstack_grow0 (&obstack, link_spec, strlen (link_spec));
6311 set_spec ("link", XOBFINISH (&obstack, const char *));
6315 /* Process sysroot_hdrs_suffix_spec. */
6316 if (*sysroot_hdrs_suffix_spec != 0
6317 && do_spec_2 (sysroot_hdrs_suffix_spec) == 0)
6319 if (VEC_length (const_char_p, argbuf) > 1)
6320 error ("spec failure: more than one arg to SYSROOT_HEADERS_SUFFIX_SPEC");
6321 else if (VEC_length (const_char_p, argbuf) == 1)
6322 target_sysroot_hdrs_suffix = xstrdup (VEC_last (const_char_p, argbuf));
6325 /* Look for startfiles in the standard places. */
6326 if (*startfile_prefix_spec != 0
6327 && do_spec_2 (startfile_prefix_spec) == 0
6328 && do_spec_1 (" ", 0, NULL) == 0)
6332 FOR_EACH_VEC_ELT (const_char_p, argbuf, ndx, arg)
6333 add_sysrooted_prefix (&startfile_prefixes, arg, "BINUTILS",
6334 PREFIX_PRIORITY_LAST, 0, 1);
6336 /* We should eventually get rid of all these and stick to
6337 startfile_prefix_spec exclusively. */
6338 else if (*cross_compile == '0' || target_system_root)
6340 if (*md_startfile_prefix)
6341 add_sysrooted_prefix (&startfile_prefixes, md_startfile_prefix,
6342 "GCC", PREFIX_PRIORITY_LAST, 0, 1);
6344 if (*md_startfile_prefix_1)
6345 add_sysrooted_prefix (&startfile_prefixes, md_startfile_prefix_1,
6346 "GCC", PREFIX_PRIORITY_LAST, 0, 1);
6348 /* If standard_startfile_prefix is relative, base it on
6349 standard_exec_prefix. This lets us move the installed tree
6350 as a unit. If GCC_EXEC_PREFIX is defined, base
6351 standard_startfile_prefix on that as well.
6353 If the prefix is relative, only search it for native compilers;
6354 otherwise we will search a directory containing host libraries. */
6355 if (IS_ABSOLUTE_PATH (standard_startfile_prefix))
6356 add_sysrooted_prefix (&startfile_prefixes,
6357 standard_startfile_prefix, "BINUTILS",
6358 PREFIX_PRIORITY_LAST, 0, 1);
6359 else if (*cross_compile == '0')
6361 add_prefix (&startfile_prefixes,
6362 concat (gcc_exec_prefix
6363 ? gcc_exec_prefix : standard_exec_prefix,
6365 standard_startfile_prefix, NULL),
6366 NULL, PREFIX_PRIORITY_LAST, 0, 1);
6369 /* Sysrooted prefixes are relocated because target_system_root is
6370 also relocated by gcc_exec_prefix. */
6371 if (*standard_startfile_prefix_1)
6372 add_sysrooted_prefix (&startfile_prefixes,
6373 standard_startfile_prefix_1, "BINUTILS",
6374 PREFIX_PRIORITY_LAST, 0, 1);
6375 if (*standard_startfile_prefix_2)
6376 add_sysrooted_prefix (&startfile_prefixes,
6377 standard_startfile_prefix_2, "BINUTILS",
6378 PREFIX_PRIORITY_LAST, 0, 1);
6381 /* Process any user specified specs in the order given on the command
6383 for (uptr = user_specs_head; uptr; uptr = uptr->next)
6385 char *filename = find_a_file (&startfile_prefixes, uptr->filename,
6387 read_specs (filename ? filename : uptr->filename, FALSE);
6390 /* If we have a GCC_EXEC_PREFIX envvar, modify it for cpp's sake. */
6391 if (gcc_exec_prefix)
6392 gcc_exec_prefix = concat (gcc_exec_prefix, spec_machine, dir_separator_str,
6393 spec_version, dir_separator_str, NULL);
6395 /* Now we have the specs.
6396 Set the `valid' bits for switches that match anything in any spec. */
6398 validate_all_switches ();
6400 /* Now that we have the switches and the specs, set
6401 the subdirectory based on the options. */
6402 set_multilib_dir ();
6404 /* Set up to remember the pathname of gcc and any options
6405 needed for collect. We use argv[0] instead of progname because
6406 we need the complete pathname. */
6407 obstack_init (&collect_obstack);
6408 obstack_grow (&collect_obstack, "COLLECT_GCC=", sizeof ("COLLECT_GCC=") - 1);
6409 obstack_grow (&collect_obstack, argv[0], strlen (argv[0]) + 1);
6410 xputenv (XOBFINISH (&collect_obstack, char *));
6412 /* Set up to remember the pathname of the lto wrapper. */
6414 lto_wrapper_file = find_a_file (&exec_prefixes, "lto-wrapper", X_OK, false);
6415 if (lto_wrapper_file)
6417 lto_wrapper_spec = lto_wrapper_file;
6418 obstack_init (&collect_obstack);
6419 obstack_grow (&collect_obstack, "COLLECT_LTO_WRAPPER=",
6420 sizeof ("COLLECT_LTO_WRAPPER=") - 1);
6421 obstack_grow (&collect_obstack, lto_wrapper_spec,
6422 strlen (lto_wrapper_spec) + 1);
6423 xputenv (XOBFINISH (&collect_obstack, char *));
6426 /* Warn about any switches that no pass was interested in. */
6428 for (i = 0; (int) i < n_switches; i++)
6429 if (! switches[i].validated)
6430 error ("unrecognized option %<-%s%>", switches[i].part1);
6432 /* Obey some of the options. */
6434 if (print_search_dirs)
6436 printf (_("install: %s%s\n"),
6437 gcc_exec_prefix ? gcc_exec_prefix : standard_exec_prefix,
6438 gcc_exec_prefix ? "" : machine_suffix);
6439 printf (_("programs: %s\n"),
6440 build_search_list (&exec_prefixes, "", false, false));
6441 printf (_("libraries: %s\n"),
6442 build_search_list (&startfile_prefixes, "", false, true));
6446 if (print_file_name)
6448 printf ("%s\n", find_file (print_file_name));
6452 if (print_prog_name)
6454 char *newname = find_a_file (&exec_prefixes, print_prog_name, X_OK, 0);
6455 printf ("%s\n", (newname ? newname : print_prog_name));
6459 if (print_multi_lib)
6461 print_multilib_info ();
6465 if (print_multi_directory)
6467 if (multilib_dir == NULL)
6470 printf ("%s\n", multilib_dir);
6476 if (target_system_root)
6478 if (target_sysroot_suffix)
6479 printf ("%s%s\n", target_system_root, target_sysroot_suffix);
6481 printf ("%s\n", target_system_root);
6486 if (print_multi_os_directory)
6488 if (multilib_os_dir == NULL)
6491 printf ("%s\n", multilib_os_dir);
6495 if (print_sysroot_headers_suffix)
6497 if (*sysroot_hdrs_suffix_spec)
6499 printf("%s\n", (target_sysroot_hdrs_suffix
6500 ? target_sysroot_hdrs_suffix
6505 /* The error status indicates that only one set of fixed
6506 headers should be built. */
6507 fatal_error ("not configured with sysroot headers suffix");
6510 if (print_help_list)
6516 printf (_("\nFor bug reporting instructions, please see:\n"));
6517 printf ("%s.\n", bug_report_url);
6522 /* We do not exit here. Instead we have created a fake input file
6523 called 'help-dummy' which needs to be compiled, and we pass this
6524 on the various sub-processes, along with the --help switch.
6525 Ensure their output appears after ours. */
6526 fputc ('\n', stdout);
6532 printf (_("%s %s%s\n"), progname, pkgversion_string,
6534 printf ("Copyright %s 2011 Free Software Foundation, Inc.\n",
6536 fputs (_("This is free software; see the source for copying conditions. There is NO\n\
6537 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\n"),
6542 /* We do not exit here. We use the same mechanism of --help to print
6543 the version of the sub-processes. */
6544 fputc ('\n', stdout);
6553 fnotice (stderr, "Target: %s\n", spec_machine);
6554 fnotice (stderr, "Configured with: %s\n", configuration_arguments);
6556 #ifdef THREAD_MODEL_SPEC
6557 /* We could have defined THREAD_MODEL_SPEC to "%*" by default,
6558 but there's no point in doing all this processing just to get
6559 thread_model back. */
6560 obstack_init (&obstack);
6561 do_spec_1 (THREAD_MODEL_SPEC, 0, thread_model);
6562 obstack_1grow (&obstack, '\0');
6563 thrmod = XOBFINISH (&obstack, const char *);
6565 thrmod = thread_model;
6568 fnotice (stderr, "Thread model: %s\n", thrmod);
6570 /* compiler_version is truncated at the first space when initialized
6571 from version string, so truncate version_string at the first space
6572 before comparing. */
6573 for (n = 0; version_string[n]; n++)
6574 if (version_string[n] == ' ')
6577 if (! strncmp (version_string, compiler_version, n)
6578 && compiler_version[n] == 0)
6579 fnotice (stderr, "gcc version %s %s\n", version_string,
6582 fnotice (stderr, "gcc driver version %s %sexecuting gcc version %s\n",
6583 version_string, pkgversion_string, compiler_version);
6589 if (n_infiles == added_libraries)
6590 fatal_error ("no input files");
6592 /* Make a place to record the compiler output file names
6593 that correspond to the input files. */
6596 i += lang_specific_extra_outfiles;
6597 outfiles = XCNEWVEC (const char *, i);
6599 /* Record which files were specified explicitly as link input. */
6601 explicit_link_files = XCNEWVEC (char, n_infiles);
6603 combine_inputs = have_o || flag_wpa;
6605 for (i = 0; (int) i < n_infiles; i++)
6607 const char *name = infiles[i].name;
6608 struct compiler *compiler = lookup_compiler (name,
6610 infiles[i].language);
6612 if (compiler && !(compiler->combinable))
6613 combine_inputs = false;
6615 if (lang_n_infiles > 0 && compiler != input_file_compiler
6616 && infiles[i].language && infiles[i].language[0] != '*')
6617 infiles[i].incompiler = compiler;
6621 input_file_compiler = compiler;
6622 infiles[i].incompiler = compiler;
6626 /* Since there is no compiler for this input file, assume it is a
6628 explicit_link_files[i] = 1;
6629 infiles[i].incompiler = NULL;
6631 infiles[i].compiled = false;
6632 infiles[i].preprocessed = false;
6635 if (!combine_inputs && have_c && have_o && lang_n_infiles > 1)
6636 fatal_error ("cannot specify -o with -c, -S or -E with multiple files");
6638 for (i = 0; (int) i < n_infiles; i++)
6640 int this_file_error = 0;
6642 /* Tell do_spec what to substitute for %i. */
6644 input_file_number = i;
6645 set_input (infiles[i].name);
6647 if (infiles[i].compiled)
6650 /* Use the same thing in %o, unless cp->spec says otherwise. */
6652 outfiles[i] = gcc_input_filename;
6654 /* Figure out which compiler from the file's suffix. */
6657 = lookup_compiler (infiles[i].name, input_filename_length,
6658 infiles[i].language);
6660 if (input_file_compiler)
6662 /* Ok, we found an applicable compiler. Run its spec. */
6664 if (input_file_compiler->spec[0] == '#')
6666 error ("%s: %s compiler not installed on this system",
6667 gcc_input_filename, &input_file_compiler->spec[1]);
6668 this_file_error = 1;
6674 if (debug_check_temp_file[0])
6675 free (debug_check_temp_file[0]);
6676 debug_check_temp_file[0] = NULL;
6678 if (debug_check_temp_file[1])
6679 free (debug_check_temp_file[1]);
6680 debug_check_temp_file[1] = NULL;
6683 value = do_spec (input_file_compiler->spec);
6684 infiles[i].compiled = true;
6686 this_file_error = 1;
6687 else if (compare_debug && debug_check_temp_file[0])
6690 inform (0, "recompiling with -fcompare-debug");
6692 compare_debug = -compare_debug;
6693 n_switches = n_switches_debug_check[1];
6694 n_switches_alloc = n_switches_alloc_debug_check[1];
6695 switches = switches_debug_check[1];
6697 value = do_spec (input_file_compiler->spec);
6699 compare_debug = -compare_debug;
6700 n_switches = n_switches_debug_check[0];
6701 n_switches_alloc = n_switches_alloc_debug_check[0];
6702 switches = switches_debug_check[0];
6706 error ("during -fcompare-debug recompilation");
6707 this_file_error = 1;
6710 gcc_assert (debug_check_temp_file[1]
6711 && strcmp (debug_check_temp_file[0],
6712 debug_check_temp_file[1]));
6715 inform (0, "comparing final insns dumps");
6717 if (compare_files (debug_check_temp_file))
6718 this_file_error = 1;
6723 if (debug_check_temp_file[0])
6724 free (debug_check_temp_file[0]);
6725 debug_check_temp_file[0] = NULL;
6727 if (debug_check_temp_file[1])
6728 free (debug_check_temp_file[1]);
6729 debug_check_temp_file[1] = NULL;
6734 /* If this file's name does not contain a recognized suffix,
6735 record it as explicit linker input. */
6738 explicit_link_files[i] = 1;
6740 /* Clear the delete-on-failure queue, deleting the files in it
6741 if this compilation failed. */
6743 if (this_file_error)
6745 delete_failure_queue ();
6748 /* If this compilation succeeded, don't delete those files later. */
6749 clear_failure_queue ();
6752 /* Reset the input file name to the first compile/object file name, for use
6753 with %b in LINK_SPEC. We use the first input file that we can find
6754 a compiler to compile it instead of using infiles.language since for
6755 languages other than C we use aliases that we then lookup later. */
6760 for (i = 0; i < n_infiles ; i++)
6761 if (infiles[i].incompiler
6762 || (infiles[i].language && infiles[i].language[0] != '*'))
6764 set_input (infiles[i].name);
6771 /* Make sure INPUT_FILE_NUMBER points to first available open
6773 input_file_number = n_infiles;
6774 if (lang_specific_pre_link ())
6778 /* Determine if there are any linker input files. */
6779 num_linker_inputs = 0;
6780 for (i = 0; (int) i < n_infiles; i++)
6781 if (explicit_link_files[i] || outfiles[i] != NULL)
6782 num_linker_inputs++;
6784 /* Run ld to link all the compiler output files. */
6786 if (num_linker_inputs > 0 && !seen_error () && print_subprocess_help < 2)
6788 int tmp = execution_count;
6789 #ifdef HAVE_LTO_PLUGIN
6790 const char *fno_use_linker_plugin = "fno-use-linker-plugin";
6792 const char *fuse_linker_plugin = "fuse-linker-plugin";
6795 /* We'll use ld if we can't find collect2. */
6796 if (! strcmp (linker_name_spec, "collect2"))
6798 char *s = find_a_file (&exec_prefixes, "collect2", X_OK, false);
6800 linker_name_spec = "ld";
6803 #ifdef HAVE_LTO_PLUGIN
6804 if (!switch_matches (fno_use_linker_plugin,
6805 fno_use_linker_plugin + strlen (fno_use_linker_plugin), 0))
6807 if (switch_matches (fuse_linker_plugin,
6808 fuse_linker_plugin + strlen (fuse_linker_plugin), 0))
6811 linker_plugin_file_spec = find_a_file (&exec_prefixes,
6812 LTOPLUGINSONAME, R_OK,
6814 if (!linker_plugin_file_spec)
6815 fatal_error ("-fuse-linker-plugin, but " LTOPLUGINSONAME " not found");
6817 lto_gcc_spec = argv[0];
6819 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
6821 putenv_from_prefixes (&exec_prefixes, "COMPILER_PATH", false);
6822 putenv_from_prefixes (&startfile_prefixes, LIBRARY_PATH_ENV, true);
6824 if (print_subprocess_help == 1)
6826 printf (_("\nLinker options\n==============\n\n"));
6827 printf (_("Use \"-Wl,OPTION\" to pass \"OPTION\""
6828 " to the linker.\n\n"));
6831 value = do_spec (link_command_spec);
6834 linker_was_run = (tmp != execution_count);
6837 /* If options said don't run linker,
6838 complain about input files to be given to the linker. */
6840 if (! linker_was_run && !seen_error ())
6841 for (i = 0; (int) i < n_infiles; i++)
6842 if (explicit_link_files[i]
6843 && !(infiles[i].language && infiles[i].language[0] == '*'))
6844 warning (0, "%s: linker input file unused because linking not done",
6847 /* Delete some or all of the temporary files we made. */
6850 delete_failure_queue ();
6851 delete_temp_files ();
6853 if (print_help_list)
6855 printf (("\nFor bug reporting instructions, please see:\n"));
6856 printf ("%s\n", bug_report_url);
6859 return (signal_count != 0 ? 2
6860 : seen_error () ? (pass_exit_codes ? greatest_status : 1)
6864 /* Find the proper compilation spec for the file name NAME,
6865 whose length is LENGTH. LANGUAGE is the specified language,
6866 or 0 if this file is to be passed to the linker. */
6868 static struct compiler *
6869 lookup_compiler (const char *name, size_t length, const char *language)
6871 struct compiler *cp;
6873 /* If this was specified by the user to be a linker input, indicate that. */
6874 if (language != 0 && language[0] == '*')
6877 /* Otherwise, look for the language, if one is spec'd. */
6880 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6881 if (cp->suffix[0] == '@' && !strcmp (cp->suffix + 1, language))
6884 error ("language %s not recognized", language);
6888 /* Look for a suffix. */
6889 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6891 if (/* The suffix `-' matches only the file name `-'. */
6892 (!strcmp (cp->suffix, "-") && !strcmp (name, "-"))
6893 || (strlen (cp->suffix) < length
6894 /* See if the suffix matches the end of NAME. */
6895 && !strcmp (cp->suffix,
6896 name + length - strlen (cp->suffix))
6901 #if defined (OS2) ||defined (HAVE_DOS_BASED_FILE_SYSTEM)
6902 /* Look again, but case-insensitively this time. */
6904 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6906 if (/* The suffix `-' matches only the file name `-'. */
6907 (!strcmp (cp->suffix, "-") && !strcmp (name, "-"))
6908 || (strlen (cp->suffix) < length
6909 /* See if the suffix matches the end of NAME. */
6910 && ((!strcmp (cp->suffix,
6911 name + length - strlen (cp->suffix))
6912 || !strpbrk (cp->suffix, "ABCDEFGHIJKLMNOPQRSTUVWXYZ"))
6913 && !strcasecmp (cp->suffix,
6914 name + length - strlen (cp->suffix)))
6920 if (cp >= compilers)
6922 if (cp->spec[0] != '@')
6923 /* A non-alias entry: return it. */
6926 /* An alias entry maps a suffix to a language.
6927 Search for the language; pass 0 for NAME and LENGTH
6928 to avoid infinite recursion if language not found. */
6929 return lookup_compiler (NULL, 0, cp->spec + 1);
6935 save_string (const char *s, int len)
6937 char *result = XNEWVEC (char, len + 1);
6939 memcpy (result, s, len);
6945 pfatal_with_name (const char *name)
6947 perror_with_name (name);
6948 delete_temp_files ();
6953 perror_with_name (const char *name)
6955 error ("%s: %m", name);
6959 validate_switches_from_spec (const char *spec)
6961 const char *p = spec;
6964 if (c == '%' && (*p == '{' || *p == '<' || (*p == 'W' && *++p == '{')))
6965 /* We have a switch spec. */
6966 p = validate_switches (p + 1);
6970 validate_all_switches (void)
6972 struct compiler *comp;
6973 struct spec_list *spec;
6975 for (comp = compilers; comp->spec; comp++)
6976 validate_switches_from_spec (comp->spec);
6978 /* Look through the linked list of specs read from the specs file. */
6979 for (spec = specs; spec; spec = spec->next)
6980 validate_switches_from_spec (*spec->ptr_spec);
6982 validate_switches_from_spec (link_command_spec);
6985 /* Look at the switch-name that comes after START
6986 and mark as valid all supplied switches that match it. */
6989 validate_switches (const char *start)
6991 const char *p = start;
6995 bool suffix = false;
6996 bool starred = false;
6998 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
7007 if (*p == '.' || *p == ',')
7011 while (ISIDNUM (*p) || *p == '-' || *p == '+' || *p == '='
7012 || *p == ',' || *p == '.' || *p == '@')
7017 starred = true, p++;
7023 /* Mark all matching switches as valid. */
7024 for (i = 0; i < n_switches; i++)
7025 if (!strncmp (switches[i].part1, atom, len)
7026 && (starred || switches[i].part1[len] == 0))
7027 switches[i].validated = 1;
7031 if (*p && (p[-1] == '|' || p[-1] == '&'))
7034 if (*p && p[-1] == ':')
7036 while (*p && *p != ';' && *p != '}')
7041 if (*p == '{' || *p == '<')
7042 p = validate_switches (p+1);
7043 else if (p[0] == 'W' && p[1] == '{')
7044 p = validate_switches (p+2);
7051 if (*p && p[-1] == ';')
7065 static struct mdswitchstr *mdswitches;
7066 static int n_mdswitches;
7068 /* Check whether a particular argument was used. The first time we
7069 canonicalize the switches to keep only the ones we care about. */
7072 used_arg (const char *p, int len)
7077 const char *replace;
7082 static struct mswitchstr *mswitches;
7083 static int n_mswitches;
7088 struct mswitchstr *matches;
7092 /* Break multilib_matches into the component strings of string
7093 and replacement string. */
7094 for (q = multilib_matches; *q != '\0'; q++)
7099 = (struct mswitchstr *) alloca ((sizeof (struct mswitchstr)) * cnt);
7101 q = multilib_matches;
7110 fatal_error ("multilib spec %qs is invalid",
7115 matches[i].len = q - matches[i].str;
7117 matches[i].replace = ++q;
7118 while (*q != ';' && *q != '\0')
7121 goto invalid_matches;
7124 matches[i].rep_len = q - matches[i].replace;
7130 /* Now build a list of the replacement string for switches that we care
7131 about. Make sure we allocate at least one entry. This prevents
7132 xmalloc from calling fatal, and prevents us from re-executing this
7135 = XNEWVEC (struct mswitchstr, n_mdswitches + (n_switches ? n_switches : 1));
7136 for (i = 0; i < n_switches; i++)
7137 if ((switches[i].live_cond & SWITCH_IGNORE) == 0)
7139 int xlen = strlen (switches[i].part1);
7140 for (j = 0; j < cnt; j++)
7141 if (xlen == matches[j].len
7142 && ! strncmp (switches[i].part1, matches[j].str, xlen))
7144 mswitches[n_mswitches].str = matches[j].replace;
7145 mswitches[n_mswitches].len = matches[j].rep_len;
7146 mswitches[n_mswitches].replace = (char *) 0;
7147 mswitches[n_mswitches].rep_len = 0;
7153 /* Add MULTILIB_DEFAULTS switches too, as long as they were not present
7154 on the command line nor any options mutually incompatible with
7156 for (i = 0; i < n_mdswitches; i++)
7160 for (q = multilib_options; *q != '\0'; q++)
7166 while (strncmp (q, mdswitches[i].str, mdswitches[i].len) != 0
7167 || strchr (" /", q[mdswitches[i].len]) == NULL)
7169 while (*q != ' ' && *q != '/' && *q != '\0')
7176 if (*q != ' ' && *q != '\0')
7178 while (*r != ' ' && *r != '\0')
7181 while (*q != ' ' && *q != '/' && *q != '\0')
7184 if (used_arg (r, q - r))
7189 mswitches[n_mswitches].str = mdswitches[i].str;
7190 mswitches[n_mswitches].len = mdswitches[i].len;
7191 mswitches[n_mswitches].replace = (char *) 0;
7192 mswitches[n_mswitches].rep_len = 0;
7205 for (i = 0; i < n_mswitches; i++)
7206 if (len == mswitches[i].len && ! strncmp (p, mswitches[i].str, len))
7213 default_arg (const char *p, int len)
7217 for (i = 0; i < n_mdswitches; i++)
7218 if (len == mdswitches[i].len && ! strncmp (p, mdswitches[i].str, len))
7224 /* Work out the subdirectory to use based on the options. The format of
7225 multilib_select is a list of elements. Each element is a subdirectory
7226 name followed by a list of options followed by a semicolon. The format
7227 of multilib_exclusions is the same, but without the preceding
7228 directory. First gcc will check the exclusions, if none of the options
7229 beginning with an exclamation point are present, and all of the other
7230 options are present, then we will ignore this completely. Passing
7231 that, gcc will consider each multilib_select in turn using the same
7232 rules for matching the options. If a match is found, that subdirectory
7236 set_multilib_dir (void)
7239 unsigned int this_path_len;
7240 const char *this_path, *this_arg;
7241 const char *start, *end;
7243 int ok, ndfltok, first;
7246 start = multilib_defaults;
7247 while (*start == ' ' || *start == '\t')
7249 while (*start != '\0')
7252 while (*start != ' ' && *start != '\t' && *start != '\0')
7254 while (*start == ' ' || *start == '\t')
7262 mdswitches = XNEWVEC (struct mdswitchstr, n_mdswitches);
7263 for (start = multilib_defaults; *start != '\0'; start = end + 1)
7265 while (*start == ' ' || *start == '\t')
7271 for (end = start + 1;
7272 *end != ' ' && *end != '\t' && *end != '\0'; end++)
7275 obstack_grow (&multilib_obstack, start, end - start);
7276 obstack_1grow (&multilib_obstack, 0);
7277 mdswitches[i].str = XOBFINISH (&multilib_obstack, const char *);
7278 mdswitches[i++].len = end - start;
7285 p = multilib_exclusions;
7288 /* Ignore newlines. */
7295 /* Check the arguments. */
7302 fatal_error ("multilib exclusions %qs is invalid",
7303 multilib_exclusions);
7313 while (*p != ' ' && *p != ';')
7316 goto invalid_exclusions;
7320 if (*this_arg != '!')
7328 ok = used_arg (this_arg, p - this_arg);
7343 p = multilib_select;
7346 /* Ignore newlines. */
7353 /* Get the initial path. */
7360 fatal_error ("multilib select %qs is invalid",
7365 this_path_len = p - this_path;
7367 /* Check the arguments. */
7374 goto invalid_select;
7383 while (*p != ' ' && *p != ';')
7386 goto invalid_select;
7390 if (*this_arg != '!')
7398 /* If this is a default argument, we can just ignore it.
7399 This is true even if this_arg begins with '!'. Beginning
7400 with '!' does not mean that this argument is necessarily
7401 inappropriate for this library: it merely means that
7402 there is a more specific library which uses this
7403 argument. If this argument is a default, we need not
7404 consider that more specific library. */
7405 ok = used_arg (this_arg, p - this_arg);
7412 if (default_arg (this_arg, p - this_arg))
7421 if (this_path_len != 1
7422 || this_path[0] != '.')
7424 char *new_multilib_dir = XNEWVEC (char, this_path_len + 1);
7427 strncpy (new_multilib_dir, this_path, this_path_len);
7428 new_multilib_dir[this_path_len] = '\0';
7429 q = strchr (new_multilib_dir, ':');
7432 multilib_dir = new_multilib_dir;
7439 const char *q = this_path, *end = this_path + this_path_len;
7441 while (q < end && *q != ':')
7445 char *new_multilib_os_dir = XNEWVEC (char, end - q);
7446 memcpy (new_multilib_os_dir, q + 1, end - q - 1);
7447 new_multilib_os_dir[end - q - 1] = '\0';
7448 multilib_os_dir = new_multilib_os_dir;
7456 if (multilib_dir == NULL && multilib_os_dir != NULL
7457 && strcmp (multilib_os_dir, ".") == 0)
7459 free (CONST_CAST (char *, multilib_os_dir));
7460 multilib_os_dir = NULL;
7462 else if (multilib_dir != NULL && multilib_os_dir == NULL)
7463 multilib_os_dir = multilib_dir;
7466 /* Print out the multiple library subdirectory selection
7467 information. This prints out a series of lines. Each line looks
7468 like SUBDIRECTORY;@OPTION@OPTION, with as many options as is
7469 required. Only the desired options are printed out, the negative
7470 matches. The options are print without a leading dash. There are
7471 no spaces to make it easy to use the information in the shell.
7472 Each subdirectory is printed only once. This assumes the ordering
7473 generated by the genmultilib script. Also, we leave out ones that match
7477 print_multilib_info (void)
7479 const char *p = multilib_select;
7480 const char *last_path = 0, *this_path;
7482 unsigned int last_path_len = 0;
7487 /* Ignore newlines. */
7494 /* Get the initial path. */
7501 fatal_error ("multilib select %qs is invalid", multilib_select);
7507 /* When --disable-multilib was used but target defines
7508 MULTILIB_OSDIRNAMES, entries starting with .: are there just
7509 to find multilib_os_dir, so skip them from output. */
7510 if (this_path[0] == '.' && this_path[1] == ':')
7513 /* Check for matches with the multilib_exclusions. We don't bother
7514 with the '!' in either list. If any of the exclusion rules match
7515 all of its options with the select rule, we skip it. */
7517 const char *e = multilib_exclusions;
7518 const char *this_arg;
7523 /* Ignore newlines. */
7530 /* Check the arguments. */
7539 fatal_error ("multilib exclusion %qs is invalid",
7540 multilib_exclusions);
7551 while (*e != ' ' && *e != ';')
7554 goto invalid_exclusion;
7562 int len = e - this_arg;
7565 goto invalid_select;
7569 while (*q != ' ' && *q != ';')
7572 goto invalid_select;
7576 if (! strncmp (arg, this_arg,
7577 (len < q - arg) ? q - arg : len)
7578 || default_arg (this_arg, e - this_arg))
7608 /* If this is a duplicate, skip it. */
7609 skip = (last_path != 0
7610 && (unsigned int) (p - this_path) == last_path_len
7611 && ! strncmp (last_path, this_path, last_path_len));
7613 last_path = this_path;
7614 last_path_len = p - this_path;
7617 /* If this directory requires any default arguments, we can skip
7618 it. We will already have printed a directory identical to
7619 this one which does not require that default argument. */
7630 goto invalid_select;
7637 while (*q != ' ' && *q != ';')
7640 goto invalid_select;
7645 && default_arg (arg, q - arg))
7660 for (p1 = last_path; p1 < p && *p1 != ':'; p1++)
7671 goto invalid_select;
7679 use_arg = *p != '!';
7684 while (*p != ' ' && *p != ';')
7687 goto invalid_select;
7699 /* If there are extra options, print them now. */
7700 if (multilib_extra && *multilib_extra)
7702 int print_at = TRUE;
7705 for (q = multilib_extra; *q != '\0'; q++)
7726 /* getenv built-in spec function.
7728 Returns the value of the environment variable given by its first
7729 argument, concatenated with the second argument. If the
7730 environment variable is not defined, a fatal error is issued. */
7733 getenv_spec_function (int argc, const char **argv)
7743 value = getenv (argv[0]);
7745 fatal_error ("environment variable %qs not defined", argv[0]);
7747 /* We have to escape every character of the environment variable so
7748 they are not interpreted as active spec characters. A
7749 particularly painful case is when we are reading a variable
7750 holding a windows path complete with \ separators. */
7751 len = strlen (value) * 2 + strlen (argv[1]) + 1;
7752 result = XNEWVAR (char, len);
7753 for (ptr = result; *value; ptr += 2)
7759 strcpy (ptr, argv[1]);
7764 /* if-exists built-in spec function.
7766 Checks to see if the file specified by the absolute pathname in
7767 ARGS exists. Returns that pathname if found.
7769 The usual use for this function is to check for a library file
7770 (whose name has been expanded with %s). */
7773 if_exists_spec_function (int argc, const char **argv)
7775 /* Must have only one argument. */
7776 if (argc == 1 && IS_ABSOLUTE_PATH (argv[0]) && ! access (argv[0], R_OK))
7782 /* if-exists-else built-in spec function.
7784 This is like if-exists, but takes an additional argument which
7785 is returned if the first argument does not exist. */
7788 if_exists_else_spec_function (int argc, const char **argv)
7790 /* Must have exactly two arguments. */
7794 if (IS_ABSOLUTE_PATH (argv[0]) && ! access (argv[0], R_OK))
7800 /* replace-outfile built-in spec function.
7802 This looks for the first argument in the outfiles array's name and
7803 replaces it with the second argument. */
7806 replace_outfile_spec_function (int argc, const char **argv)
7809 /* Must have exactly two arguments. */
7813 for (i = 0; i < n_infiles; i++)
7815 if (outfiles[i] && !strcmp (outfiles[i], argv[0]))
7816 outfiles[i] = xstrdup (argv[1]);
7821 /* remove-outfile built-in spec function.
7823 * This looks for the first argument in the outfiles array's name and
7827 remove_outfile_spec_function (int argc, const char **argv)
7830 /* Must have exactly one argument. */
7834 for (i = 0; i < n_infiles; i++)
7836 if (outfiles[i] && !strcmp (outfiles[i], argv[0]))
7842 /* Given two version numbers, compares the two numbers.
7843 A version number must match the regular expression
7844 ([1-9][0-9]*|0)(\.([1-9][0-9]*|0))*
7847 compare_version_strings (const char *v1, const char *v2)
7852 if (regcomp (&r, "^([1-9][0-9]*|0)(\\.([1-9][0-9]*|0))*$",
7853 REG_EXTENDED | REG_NOSUB) != 0)
7855 rresult = regexec (&r, v1, 0, NULL, 0);
7856 if (rresult == REG_NOMATCH)
7857 fatal_error ("invalid version number %qs", v1);
7858 else if (rresult != 0)
7860 rresult = regexec (&r, v2, 0, NULL, 0);
7861 if (rresult == REG_NOMATCH)
7862 fatal_error ("invalid version number %qs", v2);
7863 else if (rresult != 0)
7866 return strverscmp (v1, v2);
7870 /* version_compare built-in spec function.
7872 This takes an argument of the following form:
7874 <comparison-op> <arg1> [<arg2>] <switch> <result>
7876 and produces "result" if the comparison evaluates to true,
7877 and nothing if it doesn't.
7879 The supported <comparison-op> values are:
7881 >= true if switch is a later (or same) version than arg1
7883 < true if switch is an earlier version than arg1
7885 >< true if switch is arg1 or later, and earlier than arg2
7886 <> true if switch is earlier than arg1 or is arg2 or later
7888 If the switch is not present, the condition is false unless
7889 the first character of the <comparison-op> is '!'.
7892 %:version-compare(>= 10.3 mmacosx-version-min= -lmx)
7893 adds -lmx if -mmacosx-version-min=10.3.9 was passed. */
7896 version_compare_spec_function (int argc, const char **argv)
7900 const char *switch_value = NULL;
7905 fatal_error ("too few arguments to %%:version-compare");
7906 if (argv[0][0] == '\0')
7908 if ((argv[0][1] == '<' || argv[0][1] == '>') && argv[0][0] != '!')
7910 if (argc != nargs + 3)
7911 fatal_error ("too many arguments to %%:version-compare");
7913 switch_len = strlen (argv[nargs + 1]);
7914 for (i = 0; i < n_switches; i++)
7915 if (!strncmp (switches[i].part1, argv[nargs + 1], switch_len)
7916 && check_live_switch (i, switch_len))
7917 switch_value = switches[i].part1 + switch_len;
7919 if (switch_value == NULL)
7923 comp1 = compare_version_strings (switch_value, argv[1]);
7925 comp2 = compare_version_strings (switch_value, argv[2]);
7927 comp2 = -1; /* This value unused. */
7930 switch (argv[0][0] << 8 | argv[0][1])
7932 case '>' << 8 | '=':
7933 result = comp1 >= 0;
7935 case '!' << 8 | '<':
7936 result = comp1 >= 0 || switch_value == NULL;
7941 case '!' << 8 | '>':
7942 result = comp1 < 0 || switch_value == NULL;
7944 case '>' << 8 | '<':
7945 result = comp1 >= 0 && comp2 < 0;
7947 case '<' << 8 | '>':
7948 result = comp1 < 0 || comp2 >= 0;
7952 fatal_error ("unknown operator %qs in %%:version-compare", argv[0]);
7957 return argv[nargs + 2];
7960 /* %:include builtin spec function. This differs from %include in that it
7961 can be nested inside a spec, and thus be conditionalized. It takes
7962 one argument, the filename, and looks for it in the startfile path.
7963 The result is always NULL, i.e. an empty expansion. */
7966 include_spec_function (int argc, const char **argv)
7973 file = find_a_file (&startfile_prefixes, argv[0], R_OK, true);
7974 read_specs (file ? file : argv[0], FALSE);
7979 /* %:find-file spec function. This function replaces its argument by
7980 the file found thru find_file, that is the -print-file-name gcc
7983 find_file_spec_function (int argc, const char **argv)
7990 file = find_file (argv[0]);
7995 /* %:find-plugindir spec function. This function replaces its argument
7996 by the -iplugindir=<dir> option. `dir' is found thru find_file, that
7997 is the -print-file-name gcc program option. */
7999 find_plugindir_spec_function (int argc, const char **argv ATTRIBUTE_UNUSED)
8006 option = concat ("-iplugindir=", find_file ("plugin"), NULL);
8011 /* %:print-asm-header spec function. Print a banner to say that the
8012 following output is from the assembler. */
8015 print_asm_header_spec_function (int arg ATTRIBUTE_UNUSED,
8016 const char **argv ATTRIBUTE_UNUSED)
8018 printf (_("Assembler options\n=================\n\n"));
8019 printf (_("Use \"-Wa,OPTION\" to pass \"OPTION\" to the assembler.\n\n"));
8024 /* Compute a timestamp to initialize flag_random_seed. */
8027 get_local_tick (void)
8031 /* Get some more or less random data. */
8032 #ifdef HAVE_GETTIMEOFDAY
8036 gettimeofday (&tv, NULL);
8037 ret = tv.tv_sec * 1000 + tv.tv_usec / 1000;
8041 time_t now = time (NULL);
8043 if (now != (time_t)-1)
8044 ret = (unsigned) now;
8051 /* %:compare-debug-dump-opt spec function. Save the last argument,
8052 expected to be the last -fdump-final-insns option, or generate a
8056 compare_debug_dump_opt_spec_function (int arg,
8057 const char **argv ATTRIBUTE_UNUSED)
8062 static char random_seed[HOST_BITS_PER_WIDE_INT / 4 + 3];
8065 fatal_error ("too many arguments to %%:compare-debug-dump-opt");
8067 do_spec_2 ("%{fdump-final-insns=*:%*}");
8068 do_spec_1 (" ", 0, NULL);
8070 if (VEC_length (const_char_p, argbuf) > 0
8071 && strcmp (argv[VEC_length (const_char_p, argbuf) - 1], "."))
8076 name = xstrdup (argv[VEC_length (const_char_p, argbuf) - 1]);
8081 const char *ext = NULL;
8083 if (VEC_length (const_char_p, argbuf) > 0)
8085 do_spec_2 ("%{o*:%*}%{!o:%{!S:%b%O}%{S:%b.s}}");
8088 else if (!compare_debug)
8091 do_spec_2 ("%g.gkd");
8093 do_spec_1 (" ", 0, NULL);
8095 gcc_assert (VEC_length (const_char_p, argbuf) > 0);
8097 name = concat (VEC_last (const_char_p, argbuf), ext, NULL);
8099 ret = concat ("-fdump-final-insns=", name, NULL);
8102 which = compare_debug < 0;
8103 debug_check_temp_file[which] = name;
8107 unsigned HOST_WIDE_INT value = get_local_tick () ^ getpid ();
8109 sprintf (random_seed, HOST_WIDE_INT_PRINT_HEX, value);
8113 ret = concat ("%{!frandom-seed=*:-frandom-seed=", random_seed, "} ",
8122 static const char *debug_auxbase_opt;
8124 /* %:compare-debug-self-opt spec function. Expands to the options
8125 that are to be passed in the second compilation of
8129 compare_debug_self_opt_spec_function (int arg,
8130 const char **argv ATTRIBUTE_UNUSED)
8133 fatal_error ("too many arguments to %%:compare-debug-self-opt");
8135 if (compare_debug >= 0)
8138 do_spec_2 ("%{c|S:%{o*:%*}}");
8139 do_spec_1 (" ", 0, NULL);
8141 if (VEC_length (const_char_p, argbuf) > 0)
8142 debug_auxbase_opt = concat ("-auxbase-strip ",
8143 VEC_last (const_char_p, argbuf),
8146 debug_auxbase_opt = NULL;
8149 %<o %<MD %<MMD %<MF* %<MG %<MP %<MQ* %<MT* \
8150 %<fdump-final-insns=* -w -S -o %j \
8151 %{!fcompare-debug-second:-fcompare-debug-second} \
8152 ", compare_debug_opt, NULL);
8155 /* %:compare-debug-auxbase-opt spec function. Expands to the auxbase
8156 options that are to be passed in the second compilation of
8157 compare-debug. It expects, as an argument, the basename of the
8158 current input file name, with the .gk suffix appended to it. */
8161 compare_debug_auxbase_opt_spec_function (int arg,
8168 fatal_error ("too few arguments to %%:compare-debug-auxbase-opt");
8171 fatal_error ("too many arguments to %%:compare-debug-auxbase-opt");
8173 if (compare_debug >= 0)
8176 len = strlen (argv[0]);
8177 if (len < 3 || strcmp (argv[0] + len - 3, ".gk") != 0)
8178 fatal_error ("argument to %%:compare-debug-auxbase-opt "
8179 "does not end in .gk");
8181 if (debug_auxbase_opt)
8182 return debug_auxbase_opt;
8184 #define OPT "-auxbase "
8187 name = (char*) xmalloc (sizeof (OPT) + len);
8188 memcpy (name, OPT, sizeof (OPT) - 1);
8189 memcpy (name + sizeof (OPT) - 1, argv[0], len);
8190 name[sizeof (OPT) - 1 + len] = '\0';
8197 /* %:pass-through-libs spec function. Finds all -l options and input
8198 file names in the lib spec passed to it, and makes a list of them
8199 prepended with the plugin option to cause them to be passed through
8200 to the final link after all the new object files have been added. */
8203 pass_through_libs_spec_func (int argc, const char **argv)
8205 char *prepended = xstrdup (" ");
8207 /* Shlemiel the painter's algorithm. Innately horrible, but at least
8208 we know that there will never be more than a handful of strings to
8209 concat, and it's only once per run, so it's not worth optimising. */
8210 for (n = 0; n < argc; n++)
8212 char *old = prepended;
8213 /* Anything that isn't an option is a full path to an output
8214 file; pass it through if it ends in '.a'. Among options,
8216 if (argv[n][0] == '-' && argv[n][1] == 'l')
8218 const char *lopt = argv[n] + 2;
8219 /* Handle both joined and non-joined -l options. If for any
8220 reason there's a trailing -l with no joined or following
8221 arg just discard it. */
8222 if (!*lopt && ++n >= argc)
8226 prepended = concat (prepended, "-plugin-opt=-pass-through=-l",
8229 else if (!strcmp (".a", argv[n] + strlen (argv[n]) - 2))
8231 prepended = concat (prepended, "-plugin-opt=-pass-through=",
8232 argv[n], " ", NULL);
8234 if (prepended != old)