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 FIXME: For slim LTO we will need to enable plugin unconditionally. This
626 still cause problems with PLUGIN_LD != LD and when plugin is built but
627 not useable. For GCC 4.6 we don't support slim LTO and thus we can enable
628 plugin only when LTO is enabled. We still honor explicit
629 -fuse-linker-plugin. */
630 #ifdef HAVE_LTO_PLUGIN
631 #define PLUGIN_COND "!fno-use-linker-plugin:%{flto|flto=*|fuse-linker-plugin"
632 #define PLUGIN_COND_CLOSE "}"
634 #define PLUGIN_COND "fuse-linker-plugin"
635 #define PLUGIN_COND_CLOSE ""
639 /* -u* was put back because both BSD and SysV seem to support it. */
640 /* %{static:} simply prevents an error message if the target machine
641 doesn't handle -static. */
642 /* We want %{T*} after %{L*} and %D so that it can be used to specify linker
643 scripts which exist in user specified directories, or in standard
645 /* We pass any -flto flags on to the linker, which is expected
646 to understand them. In practice, this means it had better be collect2. */
647 #ifndef LINK_COMMAND_SPEC
648 #define LINK_COMMAND_SPEC "\
649 %{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:\
652 -plugin %(linker_plugin_file) \
653 -plugin-opt=%(lto_wrapper) \
654 -plugin-opt=-fresolution=%u.res \
655 %{!nostdlib:%{!nodefaultlibs:%:pass-through-libs(%(link_gcc_c_sequence))}} \
656 }"PLUGIN_COND_CLOSE" \
657 %{flto|flto=*:%<fcompare-debug*} \
658 %{flto} %{flto=*} %l " LINK_PIE_SPEC \
659 "%X %{o*} %{e*} %{N} %{n} %{r}\
660 %{s} %{t} %{u*} %{z} %{Z} %{!nostdlib:%{!nostartfiles:%S}}\
661 %{static:} %{L*} %(mfwrap) %(link_libgcc) %o\
662 %{fopenmp|ftree-parallelize-loops=*:%:include(libgomp.spec)%(link_gomp)}\
663 %(mflib) " STACK_SPLIT_SPEC "\
664 %{fprofile-arcs|fprofile-generate*|coverage:-lgcov}\
665 %{!nostdlib:%{!nodefaultlibs:%(link_ssp) %(link_gcc_c_sequence)}}\
666 %{!nostdlib:%{!nostartfiles:%E}} %{T*} }}}}}}"
669 #ifndef LINK_LIBGCC_SPEC
670 /* Generate -L options for startfile prefix list. */
671 # define LINK_LIBGCC_SPEC "%D"
674 #ifndef STARTFILE_PREFIX_SPEC
675 # define STARTFILE_PREFIX_SPEC ""
679 # define SYSROOT_SPEC "--sysroot=%R"
682 #ifndef SYSROOT_SUFFIX_SPEC
683 # define SYSROOT_SUFFIX_SPEC ""
686 #ifndef SYSROOT_HEADERS_SUFFIX_SPEC
687 # define SYSROOT_HEADERS_SUFFIX_SPEC ""
690 static const char *asm_debug
;
691 static const char *cpp_spec
= CPP_SPEC
;
692 static const char *cc1_spec
= CC1_SPEC
;
693 static const char *cc1plus_spec
= CC1PLUS_SPEC
;
694 static const char *link_gcc_c_sequence_spec
= LINK_GCC_C_SEQUENCE_SPEC
;
695 static const char *link_ssp_spec
= LINK_SSP_SPEC
;
696 static const char *asm_spec
= ASM_SPEC
;
697 static const char *asm_final_spec
= ASM_FINAL_SPEC
;
698 static const char *link_spec
= LINK_SPEC
;
699 static const char *lib_spec
= LIB_SPEC
;
700 static const char *mfwrap_spec
= MFWRAP_SPEC
;
701 static const char *mflib_spec
= MFLIB_SPEC
;
702 static const char *link_gomp_spec
= "";
703 static const char *libgcc_spec
= LIBGCC_SPEC
;
704 static const char *endfile_spec
= ENDFILE_SPEC
;
705 static const char *startfile_spec
= STARTFILE_SPEC
;
706 static const char *linker_name_spec
= LINKER_NAME
;
707 static const char *linker_plugin_file_spec
= "";
708 static const char *lto_wrapper_spec
= "";
709 static const char *lto_gcc_spec
= "";
710 static const char *link_command_spec
= LINK_COMMAND_SPEC
;
711 static const char *link_libgcc_spec
= LINK_LIBGCC_SPEC
;
712 static const char *startfile_prefix_spec
= STARTFILE_PREFIX_SPEC
;
713 static const char *sysroot_spec
= SYSROOT_SPEC
;
714 static const char *sysroot_suffix_spec
= SYSROOT_SUFFIX_SPEC
;
715 static const char *sysroot_hdrs_suffix_spec
= SYSROOT_HEADERS_SUFFIX_SPEC
;
717 /* Standard options to cpp, cc1, and as, to reduce duplication in specs.
718 There should be no need to override these in target dependent files,
719 but we need to copy them to the specs file so that newer versions
720 of the GCC driver can correctly drive older tool chains with the
721 appropriate -B options. */
723 /* When cpplib handles traditional preprocessing, get rid of this, and
724 call cc1 (or cc1obj in objc/lang-specs.h) from the main specs so
725 that we default the front end language better. */
726 static const char *trad_capable_cpp
=
727 "cc1 -E %{traditional|traditional-cpp:-traditional-cpp}";
729 /* We don't wrap .d files in %W{} since a missing .d file, and
730 therefore no dependency entry, confuses make into thinking a .o
731 file that happens to exist is up-to-date. */
732 static const char *cpp_unique_options
=
733 "%{!Q:-quiet} %{nostdinc*} %{C} %{CC} %{v} %{I*&F*} %{P} %I\
734 %{MD:-MD %{!o:%b.d}%{o*:%.d%*}}\
735 %{MMD:-MMD %{!o:%b.d}%{o*:%.d%*}}\
736 %{M} %{MM} %{MF*} %{MG} %{MP} %{MQ*} %{MT*}\
737 %{!E:%{!M:%{!MM:%{!MT:%{!MQ:%{MD|MMD:%{o*:-MQ %*}}}}}}}\
738 %{remap} %{g3|ggdb3|gstabs3|gcoff3|gxcoff3|gvms3:-dD}\
739 %{!iplugindir*:%{fplugin*:%:find-plugindir()}}\
740 %{H} %C %{D*&U*&A*} %{i*} %Z %i\
741 %{fmudflap:-D_MUDFLAP -include mf-runtime.h}\
742 %{fmudflapth:-D_MUDFLAP -D_MUDFLAPTH -include mf-runtime.h}\
745 /* This contains cpp options which are common with cc1_options and are passed
746 only when preprocessing only to avoid duplication. We pass the cc1 spec
747 options to the preprocessor so that it the cc1 spec may manipulate
748 options used to set target flags. Those special target flags settings may
749 in turn cause preprocessor symbols to be defined specially. */
750 static const char *cpp_options
=
751 "%(cpp_unique_options) %1 %{m*} %{std*&ansi&trigraphs} %{W*&pedantic*} %{w}\
752 %{f*} %{g*:%{!g0:%{g*} %{!fno-working-directory:-fworking-directory}}} %{O*}\
753 %{undef} %{save-temps*:-fpch-preprocess}";
755 /* This contains cpp options which are not passed when the preprocessor
756 output will be used by another program. */
757 static const char *cpp_debug_options
= "%{d*}";
759 /* NB: This is shared amongst all front-ends, except for Ada. */
760 static const char *cc1_options
=
761 "%{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\
762 %{!iplugindir*:%{fplugin*:%:find-plugindir()}}\
763 %1 %{!Q:-quiet} %{!dumpbase:-dumpbase %B} %{d*} %{m*} %{aux-info*}\
764 %{fcompare-debug-second:%:compare-debug-auxbase-opt(%b)} \
765 %{!fcompare-debug-second:%{c|S:%{o*:-auxbase-strip %*}%{!o*:-auxbase %b}}}%{!c:%{!S:-auxbase %b}} \
766 %{g*} %{O*} %{W*&pedantic*} %{w} %{std*&ansi&trigraphs}\
767 %{v:-version} %{pg:-p} %{p} %{f*} %{undef}\
768 %{Qn:-fno-ident} %{Qy:} %{-help:--help}\
769 %{-target-help:--target-help}\
770 %{-version:--version}\
771 %{-help=*:--help=%*}\
772 %{!fsyntax-only:%{S:%W{o*}%{!o*:-o %b.s}}}\
773 %{fsyntax-only:-o %j} %{-param*}\
774 %{fmudflap|fmudflapth:-fno-builtin -fno-merge-constants}\
775 %{coverage:-fprofile-arcs -ftest-coverage}";
777 static const char *asm_options
=
778 "%{--target-help:%:print-asm-header()} "
780 /* If GNU AS is used, then convert -w (no warnings), -I, and -v
781 to the assembler equivalents. */
782 "%{v} %{w:-W} %{I*} "
784 "%a %Y %{c:%W{o*}%{!o*:-o %w%b%O}}%{!c:-o %d%w%u%O}";
786 static const char *invoke_as
=
787 #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT
789 %{fcompare-debug=*|fdump-final-insns=*:%:compare-debug-dump-opt()}\
790 %{!S:-o %|.s |\n as %(asm_options) %|.s %A }\
794 %{fcompare-debug=*|fdump-final-insns=*:%:compare-debug-dump-opt()}\
795 %{!S:-o %|.s |\n as %(asm_options) %m.s %A }\
799 /* Some compilers have limits on line lengths, and the multilib_select
800 and/or multilib_matches strings can be very long, so we build them at
802 static struct obstack multilib_obstack
;
803 static const char *multilib_select
;
804 static const char *multilib_matches
;
805 static const char *multilib_defaults
;
806 static const char *multilib_exclusions
;
808 /* Check whether a particular argument is a default argument. */
810 #ifndef MULTILIB_DEFAULTS
811 #define MULTILIB_DEFAULTS { "" }
814 static const char *const multilib_defaults_raw
[] = MULTILIB_DEFAULTS
;
816 #ifndef DRIVER_SELF_SPECS
817 #define DRIVER_SELF_SPECS ""
820 /* Adding -fopenmp should imply pthreads. This is particularly important
821 for targets that use different start files and suchlike. */
822 #ifndef GOMP_SELF_SPECS
823 #define GOMP_SELF_SPECS "%{fopenmp|ftree-parallelize-loops=*: -pthread}"
826 static const char *const driver_self_specs
[] = {
827 "%{fdump-final-insns:-fdump-final-insns=.} %<fdump-final-insns",
828 DRIVER_SELF_SPECS
, CONFIGURE_SPECS
, GOMP_SELF_SPECS
831 #ifndef OPTION_DEFAULT_SPECS
832 #define OPTION_DEFAULT_SPECS { "", "" }
841 static const struct default_spec
842 option_default_specs
[] = { OPTION_DEFAULT_SPECS
};
846 struct user_specs
*next
;
847 const char *filename
;
850 static struct user_specs
*user_specs_head
, *user_specs_tail
;
853 /* Record the mapping from file suffixes for compilation specs. */
857 const char *suffix
; /* Use this compiler for input files
858 whose names end in this suffix. */
860 const char *spec
; /* To use this compiler, run this spec. */
862 const char *cpp_spec
; /* If non-NULL, substitute this spec
863 for `%C', rather than the usual
865 const int combinable
; /* If nonzero, compiler can deal with
866 multiple source files at once (IMA). */
867 const int needs_preprocessing
; /* If nonzero, source files need to
868 be run through a preprocessor. */
871 /* Pointer to a vector of `struct compiler' that gives the spec for
872 compiling a file, based on its suffix.
873 A file that does not end in any of these suffixes will be passed
874 unchanged to the loader and nothing else will be done to it.
876 An entry containing two 0s is used to terminate the vector.
878 If multiple entries match a file, the last matching one is used. */
880 static struct compiler
*compilers
;
882 /* Number of entries in `compilers', not counting the null terminator. */
884 static int n_compilers
;
886 /* The default list of file name suffixes and their compilation specs. */
888 static const struct compiler default_compilers
[] =
890 /* Add lists of suffixes of known languages here. If those languages
891 were not present when we built the driver, we will hit these copies
892 and be given a more meaningful error than "file not used since
893 linking is not done". */
894 {".m", "#Objective-C", 0, 0, 0}, {".mi", "#Objective-C", 0, 0, 0},
895 {".mm", "#Objective-C++", 0, 0, 0}, {".M", "#Objective-C++", 0, 0, 0},
896 {".mii", "#Objective-C++", 0, 0, 0},
897 {".cc", "#C++", 0, 0, 0}, {".cxx", "#C++", 0, 0, 0},
898 {".cpp", "#C++", 0, 0, 0}, {".cp", "#C++", 0, 0, 0},
899 {".c++", "#C++", 0, 0, 0}, {".C", "#C++", 0, 0, 0},
900 {".CPP", "#C++", 0, 0, 0}, {".ii", "#C++", 0, 0, 0},
901 {".ads", "#Ada", 0, 0, 0}, {".adb", "#Ada", 0, 0, 0},
902 {".f", "#Fortran", 0, 0, 0}, {".F", "#Fortran", 0, 0, 0},
903 {".for", "#Fortran", 0, 0, 0}, {".FOR", "#Fortran", 0, 0, 0},
904 {".ftn", "#Fortran", 0, 0, 0}, {".FTN", "#Fortran", 0, 0, 0},
905 {".fpp", "#Fortran", 0, 0, 0}, {".FPP", "#Fortran", 0, 0, 0},
906 {".f90", "#Fortran", 0, 0, 0}, {".F90", "#Fortran", 0, 0, 0},
907 {".f95", "#Fortran", 0, 0, 0}, {".F95", "#Fortran", 0, 0, 0},
908 {".f03", "#Fortran", 0, 0, 0}, {".F03", "#Fortran", 0, 0, 0},
909 {".f08", "#Fortran", 0, 0, 0}, {".F08", "#Fortran", 0, 0, 0},
910 {".r", "#Ratfor", 0, 0, 0},
911 {".p", "#Pascal", 0, 0, 0}, {".pas", "#Pascal", 0, 0, 0},
912 {".java", "#Java", 0, 0, 0}, {".class", "#Java", 0, 0, 0},
913 {".zip", "#Java", 0, 0, 0}, {".jar", "#Java", 0, 0, 0},
914 {".go", "#Go", 0, 1, 0},
915 /* Next come the entries for C. */
916 {".c", "@c", 0, 0, 1},
918 /* cc1 has an integrated ISO C preprocessor. We should invoke the
919 external preprocessor if -save-temps is given. */
920 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\
923 %eGNU C no longer supports -traditional without -E}\
924 %{save-temps*|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
925 %(cpp_options) -o %{save-temps*:%b.i} %{!save-temps*:%g.i} \n\
926 cc1 -fpreprocessed %{save-temps*:%b.i} %{!save-temps*:%g.i} \
928 %{!save-temps*:%{!traditional-cpp:%{!no-integrated-cpp:\
929 cc1 %(cpp_unique_options) %(cc1_options)}}}\
930 %{!fsyntax-only:%(invoke_as)}}}}", 0, 0, 1},
932 "%{!E:%e-E or -x required when input is from standard input}\
933 %(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)", 0, 0, 0},
934 {".h", "@c-header", 0, 0, 0},
936 /* cc1 has an integrated ISO C preprocessor. We should invoke the
937 external preprocessor if -save-temps is given. */
938 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\
940 %{save-temps*|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
941 %(cpp_options) -o %{save-temps*:%b.i} %{!save-temps*:%g.i} \n\
942 cc1 -fpreprocessed %{save-temps*:%b.i} %{!save-temps*:%g.i} \
944 %{!fdump-ada-spec*:-o %g.s %{!o*:--output-pch=%i.gch}\
945 %W{o*:--output-pch=%*}}%V}\
946 %{!save-temps*:%{!traditional-cpp:%{!no-integrated-cpp:\
947 cc1 %(cpp_unique_options) %(cc1_options)\
948 %{!fdump-ada-spec*:-o %g.s %{!o*:--output-pch=%i.gch}\
949 %W{o*:--output-pch=%*}}%V}}}}}}", 0, 0, 0},
950 {".i", "@cpp-output", 0, 0, 0},
952 "%{!M:%{!MM:%{!E:cc1 -fpreprocessed %i %(cc1_options) %{!fsyntax-only:%(invoke_as)}}}}", 0, 1, 0},
953 {".s", "@assembler", 0, 0, 0},
955 "%{!M:%{!MM:%{!E:%{!S:as %(asm_debug) %(asm_options) %i %A }}}}", 0, 0, 0},
956 {".sx", "@assembler-with-cpp", 0, 0, 0},
957 {".S", "@assembler-with-cpp", 0, 0, 0},
958 {"@assembler-with-cpp",
959 #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT
960 "%(trad_capable_cpp) -lang-asm %(cpp_options) -fno-directives-only\
961 %{E|M|MM:%(cpp_debug_options)}\
962 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\
963 as %(asm_debug) %(asm_options) %|.s %A }}}}"
965 "%(trad_capable_cpp) -lang-asm %(cpp_options) -fno-directives-only\
966 %{E|M|MM:%(cpp_debug_options)}\
967 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\
968 as %(asm_debug) %(asm_options) %m.s %A }}}}"
973 /* Mark end of table. */
977 /* Number of elements in default_compilers, not counting the terminator. */
979 static const int n_default_compilers
= ARRAY_SIZE (default_compilers
) - 1;
981 typedef char *char_p
; /* For DEF_VEC_P. */
983 DEF_VEC_ALLOC_P(char_p
,heap
);
985 /* A vector of options to give to the linker.
986 These options are accumulated by %x,
987 and substituted into the linker command with %X. */
988 static VEC(char_p
,heap
) *linker_options
;
990 /* A vector of options to give to the assembler.
991 These options are accumulated by -Wa,
992 and substituted into the assembler command with %Y. */
993 static VEC(char_p
,heap
) *assembler_options
;
995 /* A vector of options to give to the preprocessor.
996 These options are accumulated by -Wp,
997 and substituted into the preprocessor command with %Z. */
998 static VEC(char_p
,heap
) *preprocessor_options
;
1001 skip_whitespace (char *p
)
1005 /* A fully-blank line is a delimiter in the SPEC file and shouldn't
1006 be considered whitespace. */
1007 if (p
[0] == '\n' && p
[1] == '\n' && p
[2] == '\n')
1009 else if (*p
== '\n' || *p
== ' ' || *p
== '\t')
1023 /* Structures to keep track of prefixes to try when looking for files. */
1027 const char *prefix
; /* String to prepend to the path. */
1028 struct prefix_list
*next
; /* Next in linked list. */
1029 int require_machine_suffix
; /* Don't use without machine_suffix. */
1030 /* 2 means try both machine_suffix and just_machine_suffix. */
1031 int priority
; /* Sort key - priority within list. */
1032 int os_multilib
; /* 1 if OS multilib scheme should be used,
1033 0 for GCC multilib scheme. */
1038 struct prefix_list
*plist
; /* List of prefixes to try */
1039 int max_len
; /* Max length of a prefix in PLIST */
1040 const char *name
; /* Name of this list (used in config stuff) */
1043 /* List of prefixes to try when looking for executables. */
1045 static struct path_prefix exec_prefixes
= { 0, 0, "exec" };
1047 /* List of prefixes to try when looking for startup (crt0) files. */
1049 static struct path_prefix startfile_prefixes
= { 0, 0, "startfile" };
1051 /* List of prefixes to try when looking for include files. */
1053 static struct path_prefix include_prefixes
= { 0, 0, "include" };
1055 /* Suffix to attach to directories searched for commands.
1056 This looks like `MACHINE/VERSION/'. */
1058 static const char *machine_suffix
= 0;
1060 /* Suffix to attach to directories searched for commands.
1061 This is just `MACHINE/'. */
1063 static const char *just_machine_suffix
= 0;
1065 /* Adjusted value of GCC_EXEC_PREFIX envvar. */
1067 static const char *gcc_exec_prefix
;
1069 /* Adjusted value of standard_libexec_prefix. */
1071 static const char *gcc_libexec_prefix
;
1073 /* Default prefixes to attach to command names. */
1075 #ifndef STANDARD_STARTFILE_PREFIX_1
1076 #define STANDARD_STARTFILE_PREFIX_1 "/lib/"
1078 #ifndef STANDARD_STARTFILE_PREFIX_2
1079 #define STANDARD_STARTFILE_PREFIX_2 "/usr/lib/"
1082 #ifdef CROSS_DIRECTORY_STRUCTURE /* Don't use these prefixes for a cross compiler. */
1083 #undef MD_EXEC_PREFIX
1084 #undef MD_STARTFILE_PREFIX
1085 #undef MD_STARTFILE_PREFIX_1
1088 /* If no prefixes defined, use the null string, which will disable them. */
1089 #ifndef MD_EXEC_PREFIX
1090 #define MD_EXEC_PREFIX ""
1092 #ifndef MD_STARTFILE_PREFIX
1093 #define MD_STARTFILE_PREFIX ""
1095 #ifndef MD_STARTFILE_PREFIX_1
1096 #define MD_STARTFILE_PREFIX_1 ""
1099 /* These directories are locations set at configure-time based on the
1100 --prefix option provided to configure. Their initializers are
1101 defined in Makefile.in. These paths are not *directly* used when
1102 gcc_exec_prefix is set because, in that case, we know where the
1103 compiler has been installed, and use paths relative to that
1104 location instead. */
1105 static const char *const standard_exec_prefix
= STANDARD_EXEC_PREFIX
;
1106 static const char *const standard_libexec_prefix
= STANDARD_LIBEXEC_PREFIX
;
1107 static const char *const standard_bindir_prefix
= STANDARD_BINDIR_PREFIX
;
1108 static const char *const standard_startfile_prefix
= STANDARD_STARTFILE_PREFIX
;
1110 /* For native compilers, these are well-known paths containing
1111 components that may be provided by the system. For cross
1112 compilers, these paths are not used. */
1113 static const char *md_exec_prefix
= MD_EXEC_PREFIX
;
1114 static const char *md_startfile_prefix
= MD_STARTFILE_PREFIX
;
1115 static const char *md_startfile_prefix_1
= MD_STARTFILE_PREFIX_1
;
1116 static const char *const standard_startfile_prefix_1
1117 = STANDARD_STARTFILE_PREFIX_1
;
1118 static const char *const standard_startfile_prefix_2
1119 = STANDARD_STARTFILE_PREFIX_2
;
1121 /* A relative path to be used in finding the location of tools
1122 relative to the driver. */
1123 static const char *const tooldir_base_prefix
= TOOLDIR_BASE_PREFIX
;
1125 /* Subdirectory to use for locating libraries. Set by
1126 set_multilib_dir based on the compilation options. */
1128 static const char *multilib_dir
;
1130 /* Subdirectory to use for locating libraries in OS conventions. Set by
1131 set_multilib_dir based on the compilation options. */
1133 static const char *multilib_os_dir
;
1135 /* Structure to keep track of the specs that have been defined so far.
1136 These are accessed using %(specname) or %[specname] in a compiler
1141 /* The following 2 fields must be first */
1142 /* to allow EXTRA_SPECS to be initialized */
1143 const char *name
; /* name of the spec. */
1144 const char *ptr
; /* available ptr if no static pointer */
1146 /* The following fields are not initialized */
1147 /* by EXTRA_SPECS */
1148 const char **ptr_spec
; /* pointer to the spec itself. */
1149 struct spec_list
*next
; /* Next spec in linked list. */
1150 int name_len
; /* length of the name */
1151 int alloc_p
; /* whether string was allocated */
1154 #define INIT_STATIC_SPEC(NAME,PTR) \
1155 { NAME, NULL, PTR, (struct spec_list *) 0, sizeof (NAME) - 1, 0 }
1157 /* List of statically defined specs. */
1158 static struct spec_list static_specs
[] =
1160 INIT_STATIC_SPEC ("asm", &asm_spec
),
1161 INIT_STATIC_SPEC ("asm_debug", &asm_debug
),
1162 INIT_STATIC_SPEC ("asm_final", &asm_final_spec
),
1163 INIT_STATIC_SPEC ("asm_options", &asm_options
),
1164 INIT_STATIC_SPEC ("invoke_as", &invoke_as
),
1165 INIT_STATIC_SPEC ("cpp", &cpp_spec
),
1166 INIT_STATIC_SPEC ("cpp_options", &cpp_options
),
1167 INIT_STATIC_SPEC ("cpp_debug_options", &cpp_debug_options
),
1168 INIT_STATIC_SPEC ("cpp_unique_options", &cpp_unique_options
),
1169 INIT_STATIC_SPEC ("trad_capable_cpp", &trad_capable_cpp
),
1170 INIT_STATIC_SPEC ("cc1", &cc1_spec
),
1171 INIT_STATIC_SPEC ("cc1_options", &cc1_options
),
1172 INIT_STATIC_SPEC ("cc1plus", &cc1plus_spec
),
1173 INIT_STATIC_SPEC ("link_gcc_c_sequence", &link_gcc_c_sequence_spec
),
1174 INIT_STATIC_SPEC ("link_ssp", &link_ssp_spec
),
1175 INIT_STATIC_SPEC ("endfile", &endfile_spec
),
1176 INIT_STATIC_SPEC ("link", &link_spec
),
1177 INIT_STATIC_SPEC ("lib", &lib_spec
),
1178 INIT_STATIC_SPEC ("mfwrap", &mfwrap_spec
),
1179 INIT_STATIC_SPEC ("mflib", &mflib_spec
),
1180 INIT_STATIC_SPEC ("link_gomp", &link_gomp_spec
),
1181 INIT_STATIC_SPEC ("libgcc", &libgcc_spec
),
1182 INIT_STATIC_SPEC ("startfile", &startfile_spec
),
1183 INIT_STATIC_SPEC ("cross_compile", &cross_compile
),
1184 INIT_STATIC_SPEC ("version", &compiler_version
),
1185 INIT_STATIC_SPEC ("multilib", &multilib_select
),
1186 INIT_STATIC_SPEC ("multilib_defaults", &multilib_defaults
),
1187 INIT_STATIC_SPEC ("multilib_extra", &multilib_extra
),
1188 INIT_STATIC_SPEC ("multilib_matches", &multilib_matches
),
1189 INIT_STATIC_SPEC ("multilib_exclusions", &multilib_exclusions
),
1190 INIT_STATIC_SPEC ("multilib_options", &multilib_options
),
1191 INIT_STATIC_SPEC ("linker", &linker_name_spec
),
1192 INIT_STATIC_SPEC ("linker_plugin_file", &linker_plugin_file_spec
),
1193 INIT_STATIC_SPEC ("lto_wrapper", <o_wrapper_spec
),
1194 INIT_STATIC_SPEC ("lto_gcc", <o_gcc_spec
),
1195 INIT_STATIC_SPEC ("link_libgcc", &link_libgcc_spec
),
1196 INIT_STATIC_SPEC ("md_exec_prefix", &md_exec_prefix
),
1197 INIT_STATIC_SPEC ("md_startfile_prefix", &md_startfile_prefix
),
1198 INIT_STATIC_SPEC ("md_startfile_prefix_1", &md_startfile_prefix_1
),
1199 INIT_STATIC_SPEC ("startfile_prefix_spec", &startfile_prefix_spec
),
1200 INIT_STATIC_SPEC ("sysroot_spec", &sysroot_spec
),
1201 INIT_STATIC_SPEC ("sysroot_suffix_spec", &sysroot_suffix_spec
),
1202 INIT_STATIC_SPEC ("sysroot_hdrs_suffix_spec", &sysroot_hdrs_suffix_spec
),
1205 #ifdef EXTRA_SPECS /* additional specs needed */
1206 /* Structure to keep track of just the first two args of a spec_list.
1207 That is all that the EXTRA_SPECS macro gives us. */
1210 const char *const name
;
1211 const char *const ptr
;
1214 static const struct spec_list_1 extra_specs_1
[] = { EXTRA_SPECS
};
1215 static struct spec_list
*extra_specs
= (struct spec_list
*) 0;
1218 /* List of dynamically allocates specs that have been defined so far. */
1220 static struct spec_list
*specs
= (struct spec_list
*) 0;
1222 /* List of static spec functions. */
1224 static const struct spec_function static_spec_functions
[] =
1226 { "getenv", getenv_spec_function
},
1227 { "if-exists", if_exists_spec_function
},
1228 { "if-exists-else", if_exists_else_spec_function
},
1229 { "replace-outfile", replace_outfile_spec_function
},
1230 { "remove-outfile", remove_outfile_spec_function
},
1231 { "version-compare", version_compare_spec_function
},
1232 { "include", include_spec_function
},
1233 { "find-file", find_file_spec_function
},
1234 { "find-plugindir", find_plugindir_spec_function
},
1235 { "print-asm-header", print_asm_header_spec_function
},
1236 { "compare-debug-dump-opt", compare_debug_dump_opt_spec_function
},
1237 { "compare-debug-self-opt", compare_debug_self_opt_spec_function
},
1238 { "compare-debug-auxbase-opt", compare_debug_auxbase_opt_spec_function
},
1239 { "pass-through-libs", pass_through_libs_spec_func
},
1240 #ifdef EXTRA_SPEC_FUNCTIONS
1241 EXTRA_SPEC_FUNCTIONS
1246 static int processing_spec_function
;
1248 /* Add appropriate libgcc specs to OBSTACK, taking into account
1249 various permutations of -shared-libgcc, -shared, and such. */
1251 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
1253 #ifndef USE_LD_AS_NEEDED
1254 #define USE_LD_AS_NEEDED 0
1258 init_gcc_specs (struct obstack
*obstack
, const char *shared_name
,
1259 const char *static_name
, const char *eh_name
)
1263 buf
= concat ("%{static|static-libgcc:", static_name
, " ", eh_name
, "}"
1264 "%{!static:%{!static-libgcc:"
1265 #if USE_LD_AS_NEEDED
1266 "%{!shared-libgcc:",
1267 static_name
, " --as-needed ", shared_name
, " --no-as-needed"
1270 shared_name
, "%{!shared: ", static_name
, "}"
1274 "%{!shared-libgcc:", static_name
, " ", eh_name
, "}"
1275 "%{shared-libgcc:", shared_name
, " ", static_name
, "}"
1279 "%{shared-libgcc:", shared_name
, "}"
1280 "%{!shared-libgcc:", static_name
, "}"
1283 "%{shared:", shared_name
, "}"
1288 obstack_grow (obstack
, buf
, strlen (buf
));
1291 #endif /* ENABLE_SHARED_LIBGCC */
1293 /* Initialize the specs lookup routines. */
1298 struct spec_list
*next
= (struct spec_list
*) 0;
1299 struct spec_list
*sl
= (struct spec_list
*) 0;
1303 return; /* Already initialized. */
1306 fnotice (stderr
, "Using built-in specs.\n");
1309 extra_specs
= XCNEWVEC (struct spec_list
, ARRAY_SIZE (extra_specs_1
));
1311 for (i
= ARRAY_SIZE (extra_specs_1
) - 1; i
>= 0; i
--)
1313 sl
= &extra_specs
[i
];
1314 sl
->name
= extra_specs_1
[i
].name
;
1315 sl
->ptr
= extra_specs_1
[i
].ptr
;
1317 sl
->name_len
= strlen (sl
->name
);
1318 sl
->ptr_spec
= &sl
->ptr
;
1323 for (i
= ARRAY_SIZE (static_specs
) - 1; i
>= 0; i
--)
1325 sl
= &static_specs
[i
];
1330 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
1331 /* ??? If neither -shared-libgcc nor --static-libgcc was
1332 seen, then we should be making an educated guess. Some proposed
1333 heuristics for ELF include:
1335 (1) If "-Wl,--export-dynamic", then it's a fair bet that the
1336 program will be doing dynamic loading, which will likely
1337 need the shared libgcc.
1339 (2) If "-ldl", then it's also a fair bet that we're doing
1342 (3) For each ET_DYN we're linking against (either through -lfoo
1343 or /some/path/foo.so), check to see whether it or one of
1344 its dependencies depends on a shared libgcc.
1348 If the runtime is fixed to look for program headers instead
1349 of calling __register_frame_info at all, for each object,
1350 use the shared libgcc if any EH symbol referenced.
1352 If crtstuff is fixed to not invoke __register_frame_info
1353 automatically, for each object, use the shared libgcc if
1354 any non-empty unwind section found.
1356 Doing any of this probably requires invoking an external program to
1357 do the actual object file scanning. */
1359 const char *p
= libgcc_spec
;
1362 /* Transform the extant libgcc_spec into one that uses the shared libgcc
1363 when given the proper command line arguments. */
1366 if (in_sep
&& *p
== '-' && strncmp (p
, "-lgcc", 5) == 0)
1368 init_gcc_specs (&obstack
,
1370 #ifdef USE_LIBUNWIND_EXCEPTIONS
1376 #ifdef USE_LIBUNWIND_EXCEPTIONS
1377 # ifdef HAVE_LD_STATIC_DYNAMIC
1378 " %{!static:" LD_STATIC_OPTION
"} -lunwind"
1379 " %{!static:" LD_DYNAMIC_OPTION
"}"
1389 else if (in_sep
&& *p
== 'l' && strncmp (p
, "libgcc.a%s", 10) == 0)
1391 /* Ug. We don't know shared library extensions. Hope that
1392 systems that use this form don't do shared libraries. */
1393 init_gcc_specs (&obstack
,
1397 #ifdef USE_LIBUNWIND_EXCEPTIONS
1406 obstack_1grow (&obstack
, *p
);
1407 in_sep
= (*p
== ' ');
1412 obstack_1grow (&obstack
, '\0');
1413 libgcc_spec
= XOBFINISH (&obstack
, const char *);
1416 #ifdef USE_AS_TRADITIONAL_FORMAT
1417 /* Prepend "--traditional-format" to whatever asm_spec we had before. */
1419 static const char tf
[] = "--traditional-format ";
1420 obstack_grow (&obstack
, tf
, sizeof(tf
) - 1);
1421 obstack_grow0 (&obstack
, asm_spec
, strlen (asm_spec
));
1422 asm_spec
= XOBFINISH (&obstack
, const char *);
1426 #if defined LINK_EH_SPEC || defined LINK_BUILDID_SPEC
1427 # ifdef LINK_BUILDID_SPEC
1428 /* Prepend LINK_BUILDID_SPEC to whatever link_spec we had before. */
1429 obstack_grow (&obstack
, LINK_BUILDID_SPEC
, sizeof(LINK_BUILDID_SPEC
) - 1);
1431 # ifdef LINK_EH_SPEC
1432 /* Prepend LINK_EH_SPEC to whatever link_spec we had before. */
1433 obstack_grow (&obstack
, LINK_EH_SPEC
, sizeof(LINK_EH_SPEC
) - 1);
1435 obstack_grow0 (&obstack
, link_spec
, strlen (link_spec
));
1436 link_spec
= XOBFINISH (&obstack
, const char *);
1442 /* Change the value of spec NAME to SPEC. If SPEC is empty, then the spec is
1443 removed; If the spec starts with a + then SPEC is added to the end of the
1447 set_spec (const char *name
, const char *spec
)
1449 struct spec_list
*sl
;
1450 const char *old_spec
;
1451 int name_len
= strlen (name
);
1454 /* If this is the first call, initialize the statically allocated specs. */
1457 struct spec_list
*next
= (struct spec_list
*) 0;
1458 for (i
= ARRAY_SIZE (static_specs
) - 1; i
>= 0; i
--)
1460 sl
= &static_specs
[i
];
1467 /* See if the spec already exists. */
1468 for (sl
= specs
; sl
; sl
= sl
->next
)
1469 if (name_len
== sl
->name_len
&& !strcmp (sl
->name
, name
))
1474 /* Not found - make it. */
1475 sl
= XNEW (struct spec_list
);
1476 sl
->name
= xstrdup (name
);
1477 sl
->name_len
= name_len
;
1478 sl
->ptr_spec
= &sl
->ptr
;
1480 *(sl
->ptr_spec
) = "";
1485 old_spec
= *(sl
->ptr_spec
);
1486 *(sl
->ptr_spec
) = ((spec
[0] == '+' && ISSPACE ((unsigned char)spec
[1]))
1487 ? concat (old_spec
, spec
+ 1, NULL
)
1492 fnotice (stderr
, "Setting spec %s to '%s'\n\n", name
, *(sl
->ptr_spec
));
1495 /* Free the old spec. */
1496 if (old_spec
&& sl
->alloc_p
)
1497 free (CONST_CAST(char *, old_spec
));
1502 /* Accumulate a command (program name and args), and run it. */
1504 typedef const char *const_char_p
; /* For DEF_VEC_P. */
1505 DEF_VEC_P(const_char_p
);
1506 DEF_VEC_ALLOC_P(const_char_p
,heap
);
1508 /* Vector of pointers to arguments in the current line of specifications. */
1510 static VEC(const_char_p
,heap
) *argbuf
;
1512 /* Position in the argbuf vector containing the name of the output file
1513 (the value associated with the "-o" flag). */
1515 static int have_o_argbuf_index
= 0;
1517 /* Were the options -c, -S or -E passed. */
1518 static int have_c
= 0;
1520 /* Was the option -o passed. */
1521 static int have_o
= 0;
1523 /* This is the list of suffixes and codes (%g/%u/%U/%j) and the associated
1524 temp file. If the HOST_BIT_BUCKET is used for %j, no entry is made for
1527 static struct temp_name
{
1528 const char *suffix
; /* suffix associated with the code. */
1529 int length
; /* strlen (suffix). */
1530 int unique
; /* Indicates whether %g or %u/%U was used. */
1531 const char *filename
; /* associated filename. */
1532 int filename_length
; /* strlen (filename). */
1533 struct temp_name
*next
;
1536 /* Number of commands executed so far. */
1538 static int execution_count
;
1540 /* Number of commands that exited with a signal. */
1542 static int signal_count
;
1544 /* Allocate the argument vector. */
1549 argbuf
= VEC_alloc (const_char_p
, heap
, 10);
1552 /* Clear out the vector of arguments (after a command is executed). */
1557 VEC_truncate (const_char_p
, argbuf
, 0);
1560 /* Add one argument to the vector at the end.
1561 This is done when a space is seen or at the end of the line.
1562 If DELETE_ALWAYS is nonzero, the arg is a filename
1563 and the file should be deleted eventually.
1564 If DELETE_FAILURE is nonzero, the arg is a filename
1565 and the file should be deleted if this compilation fails. */
1568 store_arg (const char *arg
, int delete_always
, int delete_failure
)
1570 VEC_safe_push (const_char_p
, heap
, argbuf
, arg
);
1572 if (strcmp (arg
, "-o") == 0)
1573 have_o_argbuf_index
= VEC_length (const_char_p
, argbuf
);
1574 if (delete_always
|| delete_failure
)
1577 /* If the temporary file we should delete is specified as
1578 part of a joined argument extract the filename. */
1580 && (p
= strrchr (arg
, '=')))
1582 record_temp_file (arg
, delete_always
, delete_failure
);
1586 /* Load specs from a file name named FILENAME, replacing occurrences of
1587 various different types of line-endings, \r\n, \n\r and just \r, with
1591 load_specs (const char *filename
)
1595 struct stat statbuf
;
1602 fnotice (stderr
, "Reading specs from %s\n", filename
);
1604 /* Open and stat the file. */
1605 desc
= open (filename
, O_RDONLY
, 0);
1607 pfatal_with_name (filename
);
1608 if (stat (filename
, &statbuf
) < 0)
1609 pfatal_with_name (filename
);
1611 /* Read contents of file into BUFFER. */
1612 buffer
= XNEWVEC (char, statbuf
.st_size
+ 1);
1613 readlen
= read (desc
, buffer
, (unsigned) statbuf
.st_size
);
1615 pfatal_with_name (filename
);
1616 buffer
[readlen
] = 0;
1619 specs
= XNEWVEC (char, readlen
+ 1);
1621 for (buffer_p
= buffer
; buffer_p
&& *buffer_p
; buffer_p
++)
1627 if (buffer_p
> buffer
&& *(buffer_p
- 1) == '\n') /* \n\r */
1629 else if (*(buffer_p
+ 1) == '\n') /* \r\n */
1643 /* Read compilation specs from a file named FILENAME,
1644 replacing the default ones.
1646 A suffix which starts with `*' is a definition for
1647 one of the machine-specific sub-specs. The "suffix" should be
1648 *asm, *cc1, *cpp, *link, *startfile, etc.
1649 The corresponding spec is stored in asm_spec, etc.,
1650 rather than in the `compilers' vector.
1652 Anything invalid in the file is a fatal error. */
1655 read_specs (const char *filename
, int main_p
)
1660 buffer
= load_specs (filename
);
1662 /* Scan BUFFER for specs, putting them in the vector. */
1668 char *in
, *out
, *p1
, *p2
, *p3
;
1670 /* Advance P in BUFFER to the next nonblank nocomment line. */
1671 p
= skip_whitespace (p
);
1675 /* Is this a special command that starts with '%'? */
1676 /* Don't allow this for the main specs file, since it would
1677 encourage people to overwrite it. */
1678 if (*p
== '%' && !main_p
)
1681 while (*p
&& *p
!= '\n')
1687 if (!strncmp (p1
, "%include", sizeof ("%include") - 1)
1688 && (p1
[sizeof "%include" - 1] == ' '
1689 || p1
[sizeof "%include" - 1] == '\t'))
1693 p1
+= sizeof ("%include");
1694 while (*p1
== ' ' || *p1
== '\t')
1697 if (*p1
++ != '<' || p
[-2] != '>')
1698 fatal_error ("specs %%include syntax malformed after "
1700 (long) (p1
- buffer
+ 1));
1703 new_filename
= find_a_file (&startfile_prefixes
, p1
, R_OK
, true);
1704 read_specs (new_filename
? new_filename
: p1
, FALSE
);
1707 else if (!strncmp (p1
, "%include_noerr", sizeof "%include_noerr" - 1)
1708 && (p1
[sizeof "%include_noerr" - 1] == ' '
1709 || p1
[sizeof "%include_noerr" - 1] == '\t'))
1713 p1
+= sizeof "%include_noerr";
1714 while (*p1
== ' ' || *p1
== '\t')
1717 if (*p1
++ != '<' || p
[-2] != '>')
1718 fatal_error ("specs %%include syntax malformed after "
1720 (long) (p1
- buffer
+ 1));
1723 new_filename
= find_a_file (&startfile_prefixes
, p1
, R_OK
, true);
1725 read_specs (new_filename
, FALSE
);
1726 else if (verbose_flag
)
1727 fnotice (stderr
, "could not find specs file %s\n", p1
);
1730 else if (!strncmp (p1
, "%rename", sizeof "%rename" - 1)
1731 && (p1
[sizeof "%rename" - 1] == ' '
1732 || p1
[sizeof "%rename" - 1] == '\t'))
1735 struct spec_list
*sl
;
1736 struct spec_list
*newsl
;
1738 /* Get original name. */
1739 p1
+= sizeof "%rename";
1740 while (*p1
== ' ' || *p1
== '\t')
1743 if (! ISALPHA ((unsigned char) *p1
))
1744 fatal_error ("specs %%rename syntax malformed after "
1746 (long) (p1
- buffer
));
1749 while (*p2
&& !ISSPACE ((unsigned char) *p2
))
1752 if (*p2
!= ' ' && *p2
!= '\t')
1753 fatal_error ("specs %%rename syntax malformed after "
1755 (long) (p2
- buffer
));
1759 while (*p2
== ' ' || *p2
== '\t')
1762 if (! ISALPHA ((unsigned char) *p2
))
1763 fatal_error ("specs %%rename syntax malformed after "
1765 (long) (p2
- buffer
));
1767 /* Get new spec name. */
1769 while (*p3
&& !ISSPACE ((unsigned char) *p3
))
1773 fatal_error ("specs %%rename syntax malformed after "
1775 (long) (p3
- buffer
));
1778 for (sl
= specs
; sl
; sl
= sl
->next
)
1779 if (name_len
== sl
->name_len
&& !strcmp (sl
->name
, p1
))
1783 fatal_error ("specs %s spec was not found to be renamed", p1
);
1785 if (strcmp (p1
, p2
) == 0)
1788 for (newsl
= specs
; newsl
; newsl
= newsl
->next
)
1789 if (strcmp (newsl
->name
, p2
) == 0)
1790 fatal_error ("%s: attempt to rename spec %qs to "
1791 "already defined spec %qs",
1796 fnotice (stderr
, "rename spec %s to %s\n", p1
, p2
);
1798 fnotice (stderr
, "spec is '%s'\n\n", *(sl
->ptr_spec
));
1802 set_spec (p2
, *(sl
->ptr_spec
));
1804 free (CONST_CAST (char *, *(sl
->ptr_spec
)));
1806 *(sl
->ptr_spec
) = "";
1811 fatal_error ("specs unknown %% command after %ld characters",
1812 (long) (p1
- buffer
));
1815 /* Find the colon that should end the suffix. */
1817 while (*p1
&& *p1
!= ':' && *p1
!= '\n')
1820 /* The colon shouldn't be missing. */
1822 fatal_error ("specs file malformed after %ld characters",
1823 (long) (p1
- buffer
));
1825 /* Skip back over trailing whitespace. */
1827 while (p2
> buffer
&& (p2
[-1] == ' ' || p2
[-1] == '\t'))
1830 /* Copy the suffix to a string. */
1831 suffix
= save_string (p
, p2
- p
);
1832 /* Find the next line. */
1833 p
= skip_whitespace (p1
+ 1);
1835 fatal_error ("specs file malformed after %ld characters",
1836 (long) (p
- buffer
));
1839 /* Find next blank line or end of string. */
1840 while (*p1
&& !(*p1
== '\n' && (p1
[1] == '\n' || p1
[1] == '\0')))
1843 /* Specs end at the blank line and do not include the newline. */
1844 spec
= save_string (p
, p1
- p
);
1847 /* Delete backslash-newline sequences from the spec. */
1852 if (in
[0] == '\\' && in
[1] == '\n')
1854 else if (in
[0] == '#')
1855 while (*in
&& *in
!= '\n')
1863 if (suffix
[0] == '*')
1865 if (! strcmp (suffix
, "*link_command"))
1866 link_command_spec
= spec
;
1868 set_spec (suffix
+ 1, spec
);
1872 /* Add this pair to the vector. */
1874 = XRESIZEVEC (struct compiler
, compilers
, n_compilers
+ 2);
1876 compilers
[n_compilers
].suffix
= suffix
;
1877 compilers
[n_compilers
].spec
= spec
;
1879 memset (&compilers
[n_compilers
], 0, sizeof compilers
[n_compilers
]);
1883 link_command_spec
= spec
;
1886 if (link_command_spec
== 0)
1887 fatal_error ("spec file has no spec for linking");
1890 /* Record the names of temporary files we tell compilers to write,
1891 and delete them at the end of the run. */
1893 /* This is the common prefix we use to make temp file names.
1894 It is chosen once for each run of this program.
1895 It is substituted into a spec by %g or %j.
1896 Thus, all temp file names contain this prefix.
1897 In practice, all temp file names start with this prefix.
1899 This prefix comes from the envvar TMPDIR if it is defined;
1900 otherwise, from the P_tmpdir macro if that is defined;
1901 otherwise, in /usr/tmp or /tmp;
1902 or finally the current directory if all else fails. */
1904 static const char *temp_filename
;
1906 /* Length of the prefix. */
1908 static int temp_filename_length
;
1910 /* Define the list of temporary files to delete. */
1915 struct temp_file
*next
;
1918 /* Queue of files to delete on success or failure of compilation. */
1919 static struct temp_file
*always_delete_queue
;
1920 /* Queue of files to delete on failure of compilation. */
1921 static struct temp_file
*failure_delete_queue
;
1923 /* Record FILENAME as a file to be deleted automatically.
1924 ALWAYS_DELETE nonzero means delete it if all compilation succeeds;
1925 otherwise delete it in any case.
1926 FAIL_DELETE nonzero means delete it if a compilation step fails;
1927 otherwise delete it in any case. */
1930 record_temp_file (const char *filename
, int always_delete
, int fail_delete
)
1932 char *const name
= xstrdup (filename
);
1936 struct temp_file
*temp
;
1937 for (temp
= always_delete_queue
; temp
; temp
= temp
->next
)
1938 if (! strcmp (name
, temp
->name
))
1941 temp
= XNEW (struct temp_file
);
1942 temp
->next
= always_delete_queue
;
1944 always_delete_queue
= temp
;
1951 struct temp_file
*temp
;
1952 for (temp
= failure_delete_queue
; temp
; temp
= temp
->next
)
1953 if (! strcmp (name
, temp
->name
))
1956 temp
= XNEW (struct temp_file
);
1957 temp
->next
= failure_delete_queue
;
1959 failure_delete_queue
= temp
;
1965 /* Delete all the temporary files whose names we previously recorded. */
1967 #ifndef DELETE_IF_ORDINARY
1968 #define DELETE_IF_ORDINARY(NAME,ST,VERBOSE_FLAG) \
1971 if (stat (NAME, &ST) >= 0 && S_ISREG (ST.st_mode)) \
1972 if (unlink (NAME) < 0) \
1974 perror_with_name (NAME); \
1979 delete_if_ordinary (const char *name
)
1985 printf ("Delete %s? (y or n) ", name
);
1989 while ((c
= getchar ()) != '\n' && c
!= EOF
)
1992 if (i
== 'y' || i
== 'Y')
1994 DELETE_IF_ORDINARY (name
, st
, verbose_flag
);
1998 delete_temp_files (void)
2000 struct temp_file
*temp
;
2002 for (temp
= always_delete_queue
; temp
; temp
= temp
->next
)
2003 delete_if_ordinary (temp
->name
);
2004 always_delete_queue
= 0;
2007 /* Delete all the files to be deleted on error. */
2010 delete_failure_queue (void)
2012 struct temp_file
*temp
;
2014 for (temp
= failure_delete_queue
; temp
; temp
= temp
->next
)
2015 delete_if_ordinary (temp
->name
);
2019 clear_failure_queue (void)
2021 failure_delete_queue
= 0;
2024 /* Call CALLBACK for each path in PATHS, breaking out early if CALLBACK
2026 If DO_MULTI is true iterate over the paths twice, first with multilib
2027 suffix then without, otherwise iterate over the paths once without
2028 adding a multilib suffix. When DO_MULTI is true, some attempt is made
2029 to avoid visiting the same path twice, but we could do better. For
2030 instance, /usr/lib/../lib is considered different from /usr/lib.
2031 At least EXTRA_SPACE chars past the end of the path passed to
2032 CALLBACK are available for use by the callback.
2033 CALLBACK_INFO allows extra parameters to be passed to CALLBACK.
2035 Returns the value returned by CALLBACK. */
2038 for_each_path (const struct path_prefix
*paths
,
2041 void *(*callback
) (char *, void *),
2042 void *callback_info
)
2044 struct prefix_list
*pl
;
2045 const char *multi_dir
= NULL
;
2046 const char *multi_os_dir
= NULL
;
2047 const char *multi_suffix
;
2048 const char *just_multi_suffix
;
2051 bool skip_multi_dir
= false;
2052 bool skip_multi_os_dir
= false;
2054 multi_suffix
= machine_suffix
;
2055 just_multi_suffix
= just_machine_suffix
;
2056 if (do_multi
&& multilib_dir
&& strcmp (multilib_dir
, ".") != 0)
2058 multi_dir
= concat (multilib_dir
, dir_separator_str
, NULL
);
2059 multi_suffix
= concat (multi_suffix
, multi_dir
, NULL
);
2060 just_multi_suffix
= concat (just_multi_suffix
, multi_dir
, NULL
);
2062 if (do_multi
&& multilib_os_dir
&& strcmp (multilib_os_dir
, ".") != 0)
2063 multi_os_dir
= concat (multilib_os_dir
, dir_separator_str
, NULL
);
2067 size_t multi_dir_len
= 0;
2068 size_t multi_os_dir_len
= 0;
2070 size_t just_suffix_len
;
2074 multi_dir_len
= strlen (multi_dir
);
2076 multi_os_dir_len
= strlen (multi_os_dir
);
2077 suffix_len
= strlen (multi_suffix
);
2078 just_suffix_len
= strlen (just_multi_suffix
);
2082 len
= paths
->max_len
+ extra_space
+ 1;
2083 if (suffix_len
> multi_os_dir_len
)
2086 len
+= multi_os_dir_len
;
2087 path
= XNEWVEC (char, len
);
2090 for (pl
= paths
->plist
; pl
!= 0; pl
= pl
->next
)
2092 len
= strlen (pl
->prefix
);
2093 memcpy (path
, pl
->prefix
, len
);
2095 /* Look first in MACHINE/VERSION subdirectory. */
2096 if (!skip_multi_dir
)
2098 memcpy (path
+ len
, multi_suffix
, suffix_len
+ 1);
2099 ret
= callback (path
, callback_info
);
2104 /* Some paths are tried with just the machine (ie. target)
2105 subdir. This is used for finding as, ld, etc. */
2107 && pl
->require_machine_suffix
== 2)
2109 memcpy (path
+ len
, just_multi_suffix
, just_suffix_len
+ 1);
2110 ret
= callback (path
, callback_info
);
2115 /* Now try the base path. */
2116 if (!pl
->require_machine_suffix
2117 && !(pl
->os_multilib
? skip_multi_os_dir
: skip_multi_dir
))
2119 const char *this_multi
;
2120 size_t this_multi_len
;
2122 if (pl
->os_multilib
)
2124 this_multi
= multi_os_dir
;
2125 this_multi_len
= multi_os_dir_len
;
2129 this_multi
= multi_dir
;
2130 this_multi_len
= multi_dir_len
;
2134 memcpy (path
+ len
, this_multi
, this_multi_len
+ 1);
2138 ret
= callback (path
, callback_info
);
2146 if (multi_dir
== NULL
&& multi_os_dir
== NULL
)
2149 /* Run through the paths again, this time without multilibs.
2150 Don't repeat any we have already seen. */
2153 free (CONST_CAST (char *, multi_dir
));
2155 free (CONST_CAST (char *, multi_suffix
));
2156 multi_suffix
= machine_suffix
;
2157 free (CONST_CAST (char *, just_multi_suffix
));
2158 just_multi_suffix
= just_machine_suffix
;
2161 skip_multi_dir
= true;
2164 free (CONST_CAST (char *, multi_os_dir
));
2165 multi_os_dir
= NULL
;
2168 skip_multi_os_dir
= true;
2173 free (CONST_CAST (char *, multi_dir
));
2174 free (CONST_CAST (char *, multi_suffix
));
2175 free (CONST_CAST (char *, just_multi_suffix
));
2178 free (CONST_CAST (char *, multi_os_dir
));
2184 /* Callback for build_search_list. Adds path to obstack being built. */
2186 struct add_to_obstack_info
{
2193 add_to_obstack (char *path
, void *data
)
2195 struct add_to_obstack_info
*info
= (struct add_to_obstack_info
*) data
;
2197 if (info
->check_dir
&& !is_directory (path
, false))
2200 if (!info
->first_time
)
2201 obstack_1grow (info
->ob
, PATH_SEPARATOR
);
2203 obstack_grow (info
->ob
, path
, strlen (path
));
2205 info
->first_time
= false;
2209 /* Add or change the value of an environment variable, outputting the
2210 change to standard error if in verbose mode. */
2212 xputenv (const char *string
)
2215 fnotice (stderr
, "%s\n", string
);
2216 putenv (CONST_CAST (char *, string
));
2219 /* Build a list of search directories from PATHS.
2220 PREFIX is a string to prepend to the list.
2221 If CHECK_DIR_P is true we ensure the directory exists.
2222 If DO_MULTI is true, multilib paths are output first, then
2224 This is used mostly by putenv_from_prefixes so we use `collect_obstack'.
2225 It is also used by the --print-search-dirs flag. */
2228 build_search_list (const struct path_prefix
*paths
, const char *prefix
,
2229 bool check_dir
, bool do_multi
)
2231 struct add_to_obstack_info info
;
2233 info
.ob
= &collect_obstack
;
2234 info
.check_dir
= check_dir
;
2235 info
.first_time
= true;
2237 obstack_grow (&collect_obstack
, prefix
, strlen (prefix
));
2238 obstack_1grow (&collect_obstack
, '=');
2240 for_each_path (paths
, do_multi
, 0, add_to_obstack
, &info
);
2242 obstack_1grow (&collect_obstack
, '\0');
2243 return XOBFINISH (&collect_obstack
, char *);
2246 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
2250 putenv_from_prefixes (const struct path_prefix
*paths
, const char *env_var
,
2253 xputenv (build_search_list (paths
, env_var
, true, do_multi
));
2256 /* Check whether NAME can be accessed in MODE. This is like access,
2257 except that it never considers directories to be executable. */
2260 access_check (const char *name
, int mode
)
2266 if (stat (name
, &st
) < 0
2267 || S_ISDIR (st
.st_mode
))
2271 return access (name
, mode
);
2274 /* Callback for find_a_file. Appends the file name to the directory
2275 path. If the resulting file exists in the right mode, return the
2276 full pathname to the file. */
2278 struct file_at_path_info
{
2287 file_at_path (char *path
, void *data
)
2289 struct file_at_path_info
*info
= (struct file_at_path_info
*) data
;
2290 size_t len
= strlen (path
);
2292 memcpy (path
+ len
, info
->name
, info
->name_len
);
2293 len
+= info
->name_len
;
2295 /* Some systems have a suffix for executable files.
2296 So try appending that first. */
2297 if (info
->suffix_len
)
2299 memcpy (path
+ len
, info
->suffix
, info
->suffix_len
+ 1);
2300 if (access_check (path
, info
->mode
) == 0)
2305 if (access_check (path
, info
->mode
) == 0)
2311 /* Search for NAME using the prefix list PREFIXES. MODE is passed to
2312 access to check permissions. If DO_MULTI is true, search multilib
2313 paths then non-multilib paths, otherwise do not search multilib paths.
2314 Return 0 if not found, otherwise return its name, allocated with malloc. */
2317 find_a_file (const struct path_prefix
*pprefix
, const char *name
, int mode
,
2320 struct file_at_path_info info
;
2322 #ifdef DEFAULT_ASSEMBLER
2323 if (! strcmp (name
, "as") && access (DEFAULT_ASSEMBLER
, mode
) == 0)
2324 return xstrdup (DEFAULT_ASSEMBLER
);
2327 #ifdef DEFAULT_LINKER
2328 if (! strcmp(name
, "ld") && access (DEFAULT_LINKER
, mode
) == 0)
2329 return xstrdup (DEFAULT_LINKER
);
2332 /* Determine the filename to execute (special case for absolute paths). */
2334 if (IS_ABSOLUTE_PATH (name
))
2336 if (access (name
, mode
) == 0)
2337 return xstrdup (name
);
2343 info
.suffix
= (mode
& X_OK
) != 0 ? HOST_EXECUTABLE_SUFFIX
: "";
2344 info
.name_len
= strlen (info
.name
);
2345 info
.suffix_len
= strlen (info
.suffix
);
2348 return (char*) for_each_path (pprefix
, do_multi
,
2349 info
.name_len
+ info
.suffix_len
,
2350 file_at_path
, &info
);
2353 /* Ranking of prefixes in the sort list. -B prefixes are put before
2356 enum path_prefix_priority
2358 PREFIX_PRIORITY_B_OPT
,
2359 PREFIX_PRIORITY_LAST
2362 /* Add an entry for PREFIX in PLIST. The PLIST is kept in ascending
2363 order according to PRIORITY. Within each PRIORITY, new entries are
2366 If WARN is nonzero, we will warn if no file is found
2367 through this prefix. WARN should point to an int
2368 which will be set to 1 if this entry is used.
2370 COMPONENT is the value to be passed to update_path.
2372 REQUIRE_MACHINE_SUFFIX is 1 if this prefix can't be used without
2373 the complete value of machine_suffix.
2374 2 means try both machine_suffix and just_machine_suffix. */
2377 add_prefix (struct path_prefix
*pprefix
, const char *prefix
,
2378 const char *component
, /* enum prefix_priority */ int priority
,
2379 int require_machine_suffix
, int os_multilib
)
2381 struct prefix_list
*pl
, **prev
;
2384 for (prev
= &pprefix
->plist
;
2385 (*prev
) != NULL
&& (*prev
)->priority
<= priority
;
2386 prev
= &(*prev
)->next
)
2389 /* Keep track of the longest prefix. */
2391 prefix
= update_path (prefix
, component
);
2392 len
= strlen (prefix
);
2393 if (len
> pprefix
->max_len
)
2394 pprefix
->max_len
= len
;
2396 pl
= XNEW (struct prefix_list
);
2397 pl
->prefix
= prefix
;
2398 pl
->require_machine_suffix
= require_machine_suffix
;
2399 pl
->priority
= priority
;
2400 pl
->os_multilib
= os_multilib
;
2402 /* Insert after PREV. */
2407 /* Same as add_prefix, but prepending target_system_root to prefix. */
2408 /* The target_system_root prefix has been relocated by gcc_exec_prefix. */
2410 add_sysrooted_prefix (struct path_prefix
*pprefix
, const char *prefix
,
2411 const char *component
,
2412 /* enum prefix_priority */ int priority
,
2413 int require_machine_suffix
, int os_multilib
)
2415 if (!IS_ABSOLUTE_PATH (prefix
))
2416 fatal_error ("system path %qs is not absolute", prefix
);
2418 if (target_system_root
)
2420 if (target_sysroot_suffix
)
2421 prefix
= concat (target_sysroot_suffix
, prefix
, NULL
);
2422 prefix
= concat (target_system_root
, prefix
, NULL
);
2424 /* We have to override this because GCC's notion of sysroot
2425 moves along with GCC. */
2429 add_prefix (pprefix
, prefix
, component
, priority
,
2430 require_machine_suffix
, os_multilib
);
2433 /* Execute the command specified by the arguments on the current line of spec.
2434 When using pipes, this includes several piped-together commands
2435 with `|' between them.
2437 Return 0 if successful, -1 if failed. */
2443 int n_commands
; /* # of command. */
2445 struct pex_obj
*pex
;
2448 const char *prog
; /* program name. */
2449 const char **argv
; /* vector of args. */
2453 struct command
*commands
; /* each command buffer with above info. */
2455 gcc_assert (!processing_spec_function
);
2459 string
= find_a_file (&exec_prefixes
,
2460 VEC_index (const_char_p
, argbuf
, 0), X_OK
, false);
2462 VEC_replace (const_char_p
, argbuf
, 0, string
);
2463 insert_wrapper (wrapper_string
);
2466 /* Count # of piped commands. */
2467 for (n_commands
= 1, i
= 0; VEC_iterate (const_char_p
, argbuf
, i
, arg
); i
++)
2468 if (strcmp (arg
, "|") == 0)
2471 /* Get storage for each command. */
2472 commands
= (struct command
*) alloca (n_commands
* sizeof (struct command
));
2474 /* Split argbuf into its separate piped processes,
2475 and record info about each one.
2476 Also search for the programs that are to be run. */
2478 VEC_safe_push (const_char_p
, heap
, argbuf
, 0);
2480 commands
[0].prog
= VEC_index (const_char_p
, argbuf
, 0); /* first command. */
2481 commands
[0].argv
= VEC_address (const_char_p
, argbuf
);
2483 if (!wrapper_string
)
2485 string
= find_a_file (&exec_prefixes
, commands
[0].prog
, X_OK
, false);
2486 commands
[0].argv
[0] = (string
) ? string
: commands
[0].argv
[0];
2489 for (n_commands
= 1, i
= 0; VEC_iterate (const_char_p
, argbuf
, i
, arg
); i
++)
2490 if (arg
&& strcmp (arg
, "|") == 0)
2491 { /* each command. */
2492 #if defined (__MSDOS__) || defined (OS2) || defined (VMS)
2493 fatal_error ("-pipe not supported");
2495 VEC_replace (const_char_p
, argbuf
, i
, 0); /* Termination of
2497 commands
[n_commands
].prog
= VEC_index (const_char_p
, argbuf
, i
+ 1);
2498 commands
[n_commands
].argv
2499 = &(VEC_address (const_char_p
, argbuf
))[i
+ 1];
2500 string
= find_a_file (&exec_prefixes
, commands
[n_commands
].prog
,
2503 commands
[n_commands
].argv
[0] = string
;
2507 /* If -v, print what we are about to do, and maybe query. */
2511 /* For help listings, put a blank line between sub-processes. */
2512 if (print_help_list
)
2513 fputc ('\n', stderr
);
2515 /* Print each piped command as a separate line. */
2516 for (i
= 0; i
< n_commands
; i
++)
2518 const char *const *j
;
2520 if (verbose_only_flag
)
2522 for (j
= commands
[i
].argv
; *j
; j
++)
2525 for (p
= *j
; *p
; ++p
)
2526 if (!ISALNUM ((unsigned char) *p
)
2527 && *p
!= '_' && *p
!= '/' && *p
!= '-' && *p
!= '.')
2531 fprintf (stderr
, " \"");
2532 for (p
= *j
; *p
; ++p
)
2534 if (*p
== '"' || *p
== '\\' || *p
== '$')
2535 fputc ('\\', stderr
);
2538 fputc ('"', stderr
);
2541 fprintf (stderr
, " %s", *j
);
2545 for (j
= commands
[i
].argv
; *j
; j
++)
2546 fprintf (stderr
, " %s", *j
);
2548 /* Print a pipe symbol after all but the last command. */
2549 if (i
+ 1 != n_commands
)
2550 fprintf (stderr
, " |");
2551 fprintf (stderr
, "\n");
2554 if (verbose_only_flag
!= 0)
2556 /* verbose_only_flag should act as if the spec was
2557 executed, so increment execution_count before
2558 returning. This prevents spurious warnings about
2559 unused linker input files, etc. */
2564 fnotice (stderr
, "\nGo ahead? (y or n) ");
2568 while (getchar () != '\n')
2571 if (i
!= 'y' && i
!= 'Y')
2576 #ifdef ENABLE_VALGRIND_CHECKING
2577 /* Run the each command through valgrind. To simplify prepending the
2578 path to valgrind and the option "-q" (for quiet operation unless
2579 something triggers), we allocate a separate argv array. */
2581 for (i
= 0; i
< n_commands
; i
++)
2587 for (argc
= 0; commands
[i
].argv
[argc
] != NULL
; argc
++)
2590 argv
= XALLOCAVEC (const char *, argc
+ 3);
2592 argv
[0] = VALGRIND_PATH
;
2594 for (j
= 2; j
< argc
+ 2; j
++)
2595 argv
[j
] = commands
[i
].argv
[j
- 2];
2598 commands
[i
].argv
= argv
;
2599 commands
[i
].prog
= argv
[0];
2603 /* Run each piped subprocess. */
2605 pex
= pex_init (PEX_USE_PIPES
| ((report_times
|| report_times_to_file
)
2606 ? PEX_RECORD_TIMES
: 0),
2607 progname
, temp_filename
);
2609 fatal_error ("pex_init failed: %m");
2611 for (i
= 0; i
< n_commands
; i
++)
2615 const char *string
= commands
[i
].argv
[0];
2617 errmsg
= pex_run (pex
,
2618 ((i
+ 1 == n_commands
? PEX_LAST
: 0)
2619 | (string
== commands
[i
].prog
? PEX_SEARCH
: 0)),
2620 string
, CONST_CAST (char **, commands
[i
].argv
),
2625 fatal_error (errmsg
);
2629 pfatal_with_name (errmsg
);
2633 if (string
!= commands
[i
].prog
)
2634 free (CONST_CAST (char *, string
));
2639 /* Wait for all the subprocesses to finish. */
2643 struct pex_time
*times
= NULL
;
2646 statuses
= (int *) alloca (n_commands
* sizeof (int));
2647 if (!pex_get_status (pex
, n_commands
, statuses
))
2648 fatal_error ("failed to get exit status: %m");
2650 if (report_times
|| report_times_to_file
)
2652 times
= (struct pex_time
*) alloca (n_commands
* sizeof (struct pex_time
));
2653 if (!pex_get_times (pex
, n_commands
, times
))
2654 fatal_error ("failed to get process times: %m");
2659 for (i
= 0; i
< n_commands
; ++i
)
2661 int status
= statuses
[i
];
2663 if (WIFSIGNALED (status
))
2666 /* SIGPIPE is a special case. It happens in -pipe mode
2667 when the compiler dies before the preprocessor is done,
2668 or the assembler dies before the compiler is done.
2669 There's generally been an error already, and this is
2670 just fallout. So don't generate another error unless
2671 we would otherwise have succeeded. */
2672 if (WTERMSIG (status
) == SIGPIPE
2673 && (signal_count
|| greatest_status
>= MIN_FATAL_STATUS
))
2680 internal_error ("%s (program %s)",
2681 strsignal (WTERMSIG (status
)), commands
[i
].prog
);
2683 else if (WIFEXITED (status
)
2684 && WEXITSTATUS (status
) >= MIN_FATAL_STATUS
)
2686 if (WEXITSTATUS (status
) > greatest_status
)
2687 greatest_status
= WEXITSTATUS (status
);
2691 if (report_times
|| report_times_to_file
)
2693 struct pex_time
*pt
= ×
[i
];
2696 ut
= ((double) pt
->user_seconds
2697 + (double) pt
->user_microseconds
/ 1.0e6
);
2698 st
= ((double) pt
->system_seconds
2699 + (double) pt
->system_microseconds
/ 1.0e6
);
2704 fnotice (stderr
, "# %s %.2f %.2f\n",
2705 commands
[i
].prog
, ut
, st
);
2707 if (report_times_to_file
)
2710 const char *const *j
;
2712 fprintf (report_times_to_file
, "%g %g", ut
, st
);
2714 for (j
= &commands
[i
].prog
; *j
; j
= &commands
[i
].argv
[++c
])
2717 for (p
= *j
; *p
; ++p
)
2718 if (*p
== '"' || *p
== '\\' || *p
== '$'
2724 fprintf (report_times_to_file
, " \"");
2725 for (p
= *j
; *p
; ++p
)
2727 if (*p
== '"' || *p
== '\\' || *p
== '$')
2728 fputc ('\\', report_times_to_file
);
2729 fputc (*p
, report_times_to_file
);
2731 fputc ('"', report_times_to_file
);
2734 fprintf (report_times_to_file
, " %s", *j
);
2737 fputc ('\n', report_times_to_file
);
2747 /* Find all the switches given to us
2748 and make a vector describing them.
2749 The elements of the vector are strings, one per switch given.
2750 If a switch uses following arguments, then the `part1' field
2751 is the switch itself and the `args' field
2752 is a null-terminated vector containing the following arguments.
2753 Bits in the `live_cond' field are:
2754 SWITCH_LIVE to indicate this switch is true in a conditional spec.
2755 SWITCH_FALSE to indicate this switch is overridden by a later switch.
2756 SWITCH_IGNORE to indicate this switch should be ignored (used in %<S).
2757 SWITCH_IGNORE_PERMANENTLY to indicate this switch should be ignored
2758 in all do_spec calls afterwards. Used for %<S from self specs.
2759 The `validated' field is nonzero if any spec has looked at this switch;
2760 if it remains zero at the end of the run, it must be meaningless. */
2762 #define SWITCH_LIVE (1 << 0)
2763 #define SWITCH_FALSE (1 << 1)
2764 #define SWITCH_IGNORE (1 << 2)
2765 #define SWITCH_IGNORE_PERMANENTLY (1 << 3)
2766 #define SWITCH_KEEP_FOR_GCC (1 << 4)
2772 unsigned int live_cond
;
2773 unsigned char validated
;
2774 unsigned char ordering
;
2777 static struct switchstr
*switches
;
2779 static int n_switches
;
2781 static int n_switches_alloc
;
2783 /* Set to zero if -fcompare-debug is disabled, positive if it's
2784 enabled and we're running the first compilation, negative if it's
2785 enabled and we're running the second compilation. For most of the
2786 time, it's in the range -1..1, but it can be temporarily set to 2
2787 or 3 to indicate that the -fcompare-debug flags didn't come from
2788 the command-line, but rather from the GCC_COMPARE_DEBUG environment
2789 variable, until a synthesized -fcompare-debug flag is added to the
2793 /* Set to nonzero if we've seen the -fcompare-debug-second flag. */
2794 int compare_debug_second
;
2796 /* Set to the flags that should be passed to the second compilation in
2797 a -fcompare-debug compilation. */
2798 const char *compare_debug_opt
;
2800 static struct switchstr
*switches_debug_check
[2];
2802 static int n_switches_debug_check
[2];
2804 static int n_switches_alloc_debug_check
[2];
2806 static char *debug_check_temp_file
[2];
2808 /* Language is one of three things:
2810 1) The name of a real programming language.
2811 2) NULL, indicating that no one has figured out
2813 3) '*', indicating that the file should be passed
2818 const char *language
;
2819 struct compiler
*incompiler
;
2824 /* Also a vector of input files specified. */
2826 static struct infile
*infiles
;
2830 static int n_infiles_alloc
;
2832 /* True if multiple input files are being compiled to a single
2835 static bool combine_inputs
;
2837 /* This counts the number of libraries added by lang_specific_driver, so that
2838 we can tell if there were any user supplied any files or libraries. */
2840 static int added_libraries
;
2842 /* And a vector of corresponding output files is made up later. */
2844 const char **outfiles
;
2846 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2848 /* Convert NAME to a new name if it is the standard suffix. DO_EXE
2849 is true if we should look for an executable suffix. DO_OBJ
2850 is true if we should look for an object suffix. */
2853 convert_filename (const char *name
, int do_exe ATTRIBUTE_UNUSED
,
2854 int do_obj ATTRIBUTE_UNUSED
)
2856 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2864 len
= strlen (name
);
2866 #ifdef HAVE_TARGET_OBJECT_SUFFIX
2867 /* Convert x.o to x.obj if TARGET_OBJECT_SUFFIX is ".obj". */
2868 if (do_obj
&& len
> 2
2869 && name
[len
- 2] == '.'
2870 && name
[len
- 1] == 'o')
2872 obstack_grow (&obstack
, name
, len
- 2);
2873 obstack_grow0 (&obstack
, TARGET_OBJECT_SUFFIX
, strlen (TARGET_OBJECT_SUFFIX
));
2874 name
= XOBFINISH (&obstack
, const char *);
2878 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2879 /* If there is no filetype, make it the executable suffix (which includes
2880 the "."). But don't get confused if we have just "-o". */
2881 if (! do_exe
|| TARGET_EXECUTABLE_SUFFIX
[0] == 0 || (len
== 2 && name
[0] == '-'))
2884 for (i
= len
- 1; i
>= 0; i
--)
2885 if (IS_DIR_SEPARATOR (name
[i
]))
2888 for (i
++; i
< len
; i
++)
2892 obstack_grow (&obstack
, name
, len
);
2893 obstack_grow0 (&obstack
, TARGET_EXECUTABLE_SUFFIX
,
2894 strlen (TARGET_EXECUTABLE_SUFFIX
));
2895 name
= XOBFINISH (&obstack
, const char *);
2902 /* Display the command line switches accepted by gcc. */
2906 printf (_("Usage: %s [options] file...\n"), progname
);
2907 fputs (_("Options:\n"), stdout
);
2909 fputs (_(" -pass-exit-codes Exit with highest error code from a phase\n"), stdout
);
2910 fputs (_(" --help Display this information\n"), stdout
);
2911 fputs (_(" --target-help Display target specific command line options\n"), stdout
);
2912 fputs (_(" --help={target|optimizers|warnings|params|[^]{joined|separate|undocumented}}[,...]\n"), stdout
);
2913 fputs (_(" Display specific types of command line options\n"), stdout
);
2915 fputs (_(" (Use '-v --help' to display command line options of sub-processes)\n"), stdout
);
2916 fputs (_(" --version Display compiler version information\n"), stdout
);
2917 fputs (_(" -dumpspecs Display all of the built in spec strings\n"), stdout
);
2918 fputs (_(" -dumpversion Display the version of the compiler\n"), stdout
);
2919 fputs (_(" -dumpmachine Display the compiler's target processor\n"), stdout
);
2920 fputs (_(" -print-search-dirs Display the directories in the compiler's search path\n"), stdout
);
2921 fputs (_(" -print-libgcc-file-name Display the name of the compiler's companion library\n"), stdout
);
2922 fputs (_(" -print-file-name=<lib> Display the full path to library <lib>\n"), stdout
);
2923 fputs (_(" -print-prog-name=<prog> Display the full path to compiler component <prog>\n"), stdout
);
2924 fputs (_(" -print-multi-directory Display the root directory for versions of libgcc\n"), stdout
);
2926 -print-multi-lib Display the mapping between command line options and\n\
2927 multiple library search directories\n"), stdout
);
2928 fputs (_(" -print-multi-os-directory Display the relative path to OS libraries\n"), stdout
);
2929 fputs (_(" -print-sysroot Display the target libraries directory\n"), stdout
);
2930 fputs (_(" -print-sysroot-headers-suffix Display the sysroot suffix used to find headers\n"), stdout
);
2931 fputs (_(" -Wa,<options> Pass comma-separated <options> on to the assembler\n"), stdout
);
2932 fputs (_(" -Wp,<options> Pass comma-separated <options> on to the preprocessor\n"), stdout
);
2933 fputs (_(" -Wl,<options> Pass comma-separated <options> on to the linker\n"), stdout
);
2934 fputs (_(" -Xassembler <arg> Pass <arg> on to the assembler\n"), stdout
);
2935 fputs (_(" -Xpreprocessor <arg> Pass <arg> on to the preprocessor\n"), stdout
);
2936 fputs (_(" -Xlinker <arg> Pass <arg> on to the linker\n"), stdout
);
2937 fputs (_(" -save-temps Do not delete intermediate files\n"), stdout
);
2938 fputs (_(" -save-temps=<arg> Do not delete intermediate files\n"), stdout
);
2940 -no-canonical-prefixes Do not canonicalize paths when building relative\n\
2941 prefixes to other gcc components\n"), stdout
);
2942 fputs (_(" -pipe Use pipes rather than intermediate files\n"), stdout
);
2943 fputs (_(" -time Time the execution of each subprocess\n"), stdout
);
2944 fputs (_(" -specs=<file> Override built-in specs with the contents of <file>\n"), stdout
);
2945 fputs (_(" -std=<standard> Assume that the input sources are for <standard>\n"), stdout
);
2947 --sysroot=<directory> Use <directory> as the root directory for headers\n\
2948 and libraries\n"), stdout
);
2949 fputs (_(" -B <directory> Add <directory> to the compiler's search paths\n"), stdout
);
2950 fputs (_(" -v Display the programs invoked by the compiler\n"), stdout
);
2951 fputs (_(" -### Like -v but options quoted and commands not executed\n"), stdout
);
2952 fputs (_(" -E Preprocess only; do not compile, assemble or link\n"), stdout
);
2953 fputs (_(" -S Compile only; do not assemble or link\n"), stdout
);
2954 fputs (_(" -c Compile and assemble, but do not link\n"), stdout
);
2955 fputs (_(" -o <file> Place the output into <file>\n"), stdout
);
2957 -x <language> Specify the language of the following input files\n\
2958 Permissible languages include: c c++ assembler none\n\
2959 'none' means revert to the default behavior of\n\
2960 guessing the language based on the file's extension\n\
2964 \nOptions starting with -g, -f, -m, -O, -W, or --param are automatically\n\
2965 passed on to the various sub-processes invoked by %s. In order to pass\n\
2966 other options on to these processes the -W<letter> options must be used.\n\
2969 /* The rest of the options are displayed by invocations of the various
2974 add_preprocessor_option (const char *option
, int len
)
2976 VEC_safe_push (char_p
, heap
, preprocessor_options
,
2977 save_string (option
, len
));
2981 add_assembler_option (const char *option
, int len
)
2983 VEC_safe_push (char_p
, heap
, assembler_options
, save_string (option
, len
));
2987 add_linker_option (const char *option
, int len
)
2989 VEC_safe_push (char_p
, heap
, linker_options
, save_string (option
, len
));
2992 /* Allocate space for an input file in infiles. */
2997 if (n_infiles_alloc
== 0)
2999 n_infiles_alloc
= 16;
3000 infiles
= XNEWVEC (struct infile
, n_infiles_alloc
);
3002 else if (n_infiles_alloc
== n_infiles
)
3004 n_infiles_alloc
*= 2;
3005 infiles
= XRESIZEVEC (struct infile
, infiles
, n_infiles_alloc
);
3009 /* Store an input file with the given NAME and LANGUAGE in
3013 add_infile (const char *name
, const char *language
)
3016 infiles
[n_infiles
].name
= name
;
3017 infiles
[n_infiles
++].language
= language
;
3020 /* Allocate space for a switch in switches. */
3025 if (n_switches_alloc
== 0)
3027 n_switches_alloc
= 16;
3028 switches
= XNEWVEC (struct switchstr
, n_switches_alloc
);
3030 else if (n_switches_alloc
== n_switches
)
3032 n_switches_alloc
*= 2;
3033 switches
= XRESIZEVEC (struct switchstr
, switches
, n_switches_alloc
);
3037 /* Save an option OPT with N_ARGS arguments in array ARGS, marking it
3038 as validated if VALIDATED. */
3041 save_switch (const char *opt
, size_t n_args
, const char *const *args
,
3045 switches
[n_switches
].part1
= opt
+ 1;
3047 switches
[n_switches
].args
= 0;
3050 switches
[n_switches
].args
= XNEWVEC (const char *, n_args
+ 1);
3051 memcpy (switches
[n_switches
].args
, args
, n_args
* sizeof (const char *));
3052 switches
[n_switches
].args
[n_args
] = NULL
;
3055 switches
[n_switches
].live_cond
= 0;
3056 switches
[n_switches
].validated
= validated
;
3057 switches
[n_switches
].ordering
= 0;
3061 /* Handle an option DECODED that is unknown to the option-processing
3062 machinery, but may be known to specs. */
3065 driver_unknown_option_callback (const struct cl_decoded_option
*decoded
)
3067 save_switch (decoded
->canonical_option
[0],
3068 decoded
->canonical_option_num_elements
- 1,
3069 &decoded
->canonical_option
[1], false);
3074 /* Handle an option DECODED that is not marked as CL_DRIVER.
3075 LANG_MASK will always be CL_DRIVER. */
3078 driver_wrong_lang_callback (const struct cl_decoded_option
*decoded
,
3079 unsigned int lang_mask ATTRIBUTE_UNUSED
)
3081 /* At this point, non-driver options are accepted (and expected to
3082 be passed down by specs) unless marked to be rejected by the
3083 driver. Options to be rejected by the driver but accepted by the
3084 compilers proper are treated just like completely unknown
3086 const struct cl_option
*option
= &cl_options
[decoded
->opt_index
];
3088 if (option
->flags
& CL_REJECT_DRIVER
)
3089 error ("unrecognized command line option %qs",
3090 decoded
->orig_option_with_args_text
);
3092 driver_unknown_option_callback (decoded
);
3095 /* Note that an option (index OPT_INDEX, argument ARG, value VALUE)
3096 has been successfully handled with a handler for mask MASK. */
3099 driver_post_handling_callback (const struct cl_decoded_option
*decoded ATTRIBUTE_UNUSED
,
3100 unsigned int mask ATTRIBUTE_UNUSED
)
3102 /* Nothing to do here. */
3105 static const char *spec_lang
= 0;
3106 static int last_language_n_infiles
;
3108 /* Handle a driver option; arguments and return value as for
3112 driver_handle_option (struct gcc_options
*opts
,
3113 struct gcc_options
*opts_set
,
3114 const struct cl_decoded_option
*decoded
,
3115 unsigned int lang_mask ATTRIBUTE_UNUSED
, int kind
,
3117 const struct cl_option_handlers
*handlers ATTRIBUTE_UNUSED
,
3118 diagnostic_context
*dc
)
3120 size_t opt_index
= decoded
->opt_index
;
3121 const char *arg
= decoded
->arg
;
3122 const char *compare_debug_replacement_opt
;
3123 int value
= decoded
->value
;
3124 bool validated
= false;
3125 bool do_save
= true;
3127 gcc_assert (opts
== &global_options
);
3128 gcc_assert (opts_set
== &global_options_set
);
3129 gcc_assert (kind
== DK_UNSPECIFIED
);
3130 gcc_assert (loc
== UNKNOWN_LOCATION
);
3131 gcc_assert (dc
== global_dc
);
3137 struct spec_list
*sl
;
3139 for (sl
= specs
; sl
; sl
= sl
->next
)
3140 printf ("*%s:\n%s\n\n", sl
->name
, *(sl
->ptr_spec
));
3141 if (link_command_spec
)
3142 printf ("*link_command:\n%s\n\n", link_command_spec
);
3146 case OPT_dumpversion
:
3147 printf ("%s\n", spec_version
);
3150 case OPT_dumpmachine
:
3151 printf ("%s\n", spec_machine
);
3157 /* CPP driver cannot obtain switch from cc1_options. */
3159 add_preprocessor_option ("--version", strlen ("--version"));
3160 add_assembler_option ("--version", strlen ("--version"));
3161 add_linker_option ("--version", strlen ("--version"));
3165 print_help_list
= 1;
3167 /* CPP driver cannot obtain switch from cc1_options. */
3169 add_preprocessor_option ("--help", 6);
3170 add_assembler_option ("--help", 6);
3171 add_linker_option ("--help", 6);
3175 print_subprocess_help
= 2;
3178 case OPT__target_help
:
3179 print_subprocess_help
= 1;
3181 /* CPP driver cannot obtain switch from cc1_options. */
3183 add_preprocessor_option ("--target-help", 13);
3184 add_assembler_option ("--target-help", 13);
3185 add_linker_option ("--target-help", 13);
3188 case OPT_pass_exit_codes
:
3189 case OPT_print_search_dirs
:
3190 case OPT_print_file_name_
:
3191 case OPT_print_prog_name_
:
3192 case OPT_print_multi_lib
:
3193 case OPT_print_multi_directory
:
3194 case OPT_print_sysroot
:
3195 case OPT_print_multi_os_directory
:
3196 case OPT_print_sysroot_headers_suffix
:
3199 /* These options set the variables specified in common.opt
3200 automatically, and do not need to be saved for spec
3205 case OPT_print_libgcc_file_name
:
3206 print_file_name
= "libgcc.a";
3210 case OPT_fcompare_debug_second
:
3211 compare_debug_second
= 1;
3214 case OPT_fcompare_debug
:
3218 compare_debug_replacement_opt
= "-fcompare-debug=";
3220 goto compare_debug_with_arg
;
3223 compare_debug_replacement_opt
= "-fcompare-debug=-gtoggle";
3225 goto compare_debug_with_arg
;
3232 case OPT_fcompare_debug_
:
3233 compare_debug_replacement_opt
= decoded
->canonical_option
[0];
3234 compare_debug_with_arg
:
3235 gcc_assert (decoded
->canonical_option_num_elements
== 1);
3236 gcc_assert (arg
!= NULL
);
3241 if (compare_debug
< 0)
3242 compare_debug_opt
= NULL
;
3244 compare_debug_opt
= arg
;
3245 save_switch (compare_debug_replacement_opt
, 0, NULL
, validated
);
3251 /* Pass the rest of this option to the assembler. */
3253 /* Split the argument at commas. */
3255 for (j
= 0; arg
[j
]; j
++)
3258 add_assembler_option (arg
+ prev
, j
- prev
);
3262 /* Record the part after the last comma. */
3263 add_assembler_option (arg
+ prev
, j
- prev
);
3271 /* Pass the rest of this option to the preprocessor. */
3273 /* Split the argument at commas. */
3275 for (j
= 0; arg
[j
]; j
++)
3278 add_preprocessor_option (arg
+ prev
, j
- prev
);
3282 /* Record the part after the last comma. */
3283 add_preprocessor_option (arg
+ prev
, j
- prev
);
3291 /* Split the argument at commas. */
3293 for (j
= 0; arg
[j
]; j
++)
3296 add_infile (save_string (arg
+ prev
, j
- prev
), "*");
3299 /* Record the part after the last comma. */
3300 add_infile (arg
+ prev
, "*");
3306 add_infile (arg
, "*");
3310 case OPT_Xpreprocessor
:
3311 add_preprocessor_option (arg
, strlen (arg
));
3315 case OPT_Xassembler
:
3316 add_assembler_option (arg
, strlen (arg
));
3321 /* POSIX allows separation of -l and the lib arg; canonicalize
3322 by concatenating -l with its arg */
3323 add_infile (concat ("-l", arg
, NULL
), "*");
3328 /* Similarly, canonicalize -L for linkers that may not accept
3329 separate arguments. */
3330 save_switch (concat ("-L", arg
, NULL
), 0, NULL
, validated
);
3333 case OPT_save_temps
:
3334 save_temps_flag
= SAVE_TEMPS_CWD
;
3338 case OPT_save_temps_
:
3339 if (strcmp (arg
, "cwd") == 0)
3340 save_temps_flag
= SAVE_TEMPS_CWD
;
3341 else if (strcmp (arg
, "obj") == 0
3342 || strcmp (arg
, "object") == 0)
3343 save_temps_flag
= SAVE_TEMPS_OBJ
;
3345 fatal_error ("%qs is an unknown -save-temps option",
3346 decoded
->orig_option_with_args_text
);
3349 case OPT_no_canonical_prefixes
:
3350 /* Already handled as a special case, so ignored here. */
3356 /* These options set the variables specified in common.opt
3357 automatically, but do need to be saved for spec
3363 struct user_specs
*user
= XNEW (struct user_specs
);
3365 user
->next
= (struct user_specs
*) 0;
3366 user
->filename
= arg
;
3367 if (user_specs_tail
)
3368 user_specs_tail
->next
= user
;
3370 user_specs_head
= user
;
3371 user_specs_tail
= user
;
3377 target_system_root
= arg
;
3378 target_system_root_changed
= 1;
3383 if (report_times_to_file
)
3384 fclose (report_times_to_file
);
3385 report_times_to_file
= fopen (arg
, "a");
3391 This is similar to -v except that there is no execution
3392 of the commands and the echoed arguments are quoted. It
3393 is intended for use in shell scripts to capture the
3394 driver-generated command line. */
3395 verbose_only_flag
++;
3402 size_t len
= strlen (arg
);
3404 /* Catch the case where the user has forgotten to append a
3405 directory separator to the path. Note, they may be using
3406 -B to add an executable name prefix, eg "i386-elf-", in
3407 order to distinguish between multiple installations of
3408 GCC in the same directory. Hence we must check to see
3409 if appending a directory separator actually makes a
3410 valid directory name. */
3411 if (!IS_DIR_SEPARATOR (arg
[len
- 1])
3412 && is_directory (arg
, false))
3414 char *tmp
= XNEWVEC (char, len
+ 2);
3416 tmp
[len
] = DIR_SEPARATOR
;
3421 add_prefix (&exec_prefixes
, arg
, NULL
,
3422 PREFIX_PRIORITY_B_OPT
, 0, 0);
3423 add_prefix (&startfile_prefixes
, arg
, NULL
,
3424 PREFIX_PRIORITY_B_OPT
, 0, 0);
3425 add_prefix (&include_prefixes
, arg
, NULL
,
3426 PREFIX_PRIORITY_B_OPT
, 0, 0);
3433 if (!strcmp (spec_lang
, "none"))
3434 /* Suppress the warning if -xnone comes after the last input
3435 file, because alternate command interfaces like g++ might
3436 find it useful to place -xnone after each input file. */
3439 last_language_n_infiles
= n_infiles
;
3445 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX) || defined(HAVE_TARGET_OBJECT_SUFFIX)
3446 arg
= convert_filename (arg
, ! have_c
, 0);
3448 /* Save the output name in case -save-temps=obj was used. */
3449 save_temps_prefix
= xstrdup (arg
);
3450 /* On some systems, ld cannot handle "-o" without a space. So
3451 split the option from its argument. */
3452 save_switch ("-o", 1, &arg
, validated
);
3455 case OPT_static_libgcc
:
3456 case OPT_shared_libgcc
:
3457 case OPT_static_libgfortran
:
3458 case OPT_static_libstdc__
:
3459 /* These are always valid, since gcc.c itself understands the
3460 first two, gfortranspec.c understands -static-libgfortran and
3461 g++spec.c understands -static-libstdc++ */
3466 /* Various driver options need no special processing at this
3467 point, having been handled in a prescan above or being
3468 handled by specs. */
3473 save_switch (decoded
->canonical_option
[0],
3474 decoded
->canonical_option_num_elements
- 1,
3475 &decoded
->canonical_option
[1], validated
);
3479 /* Put the driver's standard set of option handlers in *HANDLERS. */
3482 set_option_handlers (struct cl_option_handlers
*handlers
)
3484 handlers
->unknown_option_callback
= driver_unknown_option_callback
;
3485 handlers
->wrong_lang_callback
= driver_wrong_lang_callback
;
3486 handlers
->post_handling_callback
= driver_post_handling_callback
;
3487 handlers
->num_handlers
= 1;
3488 handlers
->handlers
[0].handler
= driver_handle_option
;
3489 handlers
->handlers
[0].mask
= CL_DRIVER
;
3492 /* Create the vector `switches' and its contents.
3493 Store its length in `n_switches'. */
3496 process_command (unsigned int decoded_options_count
,
3497 struct cl_decoded_option
*decoded_options
)
3501 const char *tooldir_prefix
;
3502 char *(*get_relative_prefix
) (const char *, const char *,
3503 const char *) = NULL
;
3504 struct cl_option_handlers handlers
;
3507 gcc_exec_prefix
= getenv ("GCC_EXEC_PREFIX");
3511 added_libraries
= 0;
3513 /* Figure compiler version from version string. */
3515 compiler_version
= temp1
= xstrdup (version_string
);
3517 for (; *temp1
; ++temp1
)
3526 /* Handle any -no-canonical-prefixes flag early, to assign the function
3527 that builds relative prefixes. This function creates default search
3528 paths that are needed later in normal option handling. */
3530 for (j
= 1; j
< decoded_options_count
; j
++)
3532 if (decoded_options
[j
].opt_index
== OPT_no_canonical_prefixes
)
3534 get_relative_prefix
= make_relative_prefix_ignore_links
;
3538 if (! get_relative_prefix
)
3539 get_relative_prefix
= make_relative_prefix
;
3541 /* Set up the default search paths. If there is no GCC_EXEC_PREFIX,
3542 see if we can create it from the pathname specified in
3543 decoded_options[0].arg. */
3545 gcc_libexec_prefix
= standard_libexec_prefix
;
3547 /* FIXME: make_relative_prefix doesn't yet work for VMS. */
3548 if (!gcc_exec_prefix
)
3550 gcc_exec_prefix
= get_relative_prefix (decoded_options
[0].arg
,
3551 standard_bindir_prefix
,
3552 standard_exec_prefix
);
3553 gcc_libexec_prefix
= get_relative_prefix (decoded_options
[0].arg
,
3554 standard_bindir_prefix
,
3555 standard_libexec_prefix
);
3556 if (gcc_exec_prefix
)
3557 xputenv (concat ("GCC_EXEC_PREFIX=", gcc_exec_prefix
, NULL
));
3561 /* make_relative_prefix requires a program name, but
3562 GCC_EXEC_PREFIX is typically a directory name with a trailing
3563 / (which is ignored by make_relative_prefix), so append a
3565 char *tmp_prefix
= concat (gcc_exec_prefix
, "gcc", NULL
);
3566 gcc_libexec_prefix
= get_relative_prefix (tmp_prefix
,
3567 standard_exec_prefix
,
3568 standard_libexec_prefix
);
3570 /* The path is unrelocated, so fallback to the original setting. */
3571 if (!gcc_libexec_prefix
)
3572 gcc_libexec_prefix
= standard_libexec_prefix
;
3578 /* From this point onward, gcc_exec_prefix is non-null if the toolchain
3579 is relocated. The toolchain was either relocated using GCC_EXEC_PREFIX
3580 or an automatically created GCC_EXEC_PREFIX from
3581 decoded_options[0].arg. */
3583 /* Do language-specific adjustment/addition of flags. */
3584 lang_specific_driver (&decoded_options
, &decoded_options_count
,
3587 if (gcc_exec_prefix
)
3589 int len
= strlen (gcc_exec_prefix
);
3591 if (len
> (int) sizeof ("/lib/gcc/") - 1
3592 && (IS_DIR_SEPARATOR (gcc_exec_prefix
[len
-1])))
3594 temp
= gcc_exec_prefix
+ len
- sizeof ("/lib/gcc/") + 1;
3595 if (IS_DIR_SEPARATOR (*temp
)
3596 && strncmp (temp
+ 1, "lib", 3) == 0
3597 && IS_DIR_SEPARATOR (temp
[4])
3598 && strncmp (temp
+ 5, "gcc", 3) == 0)
3599 len
-= sizeof ("/lib/gcc/") - 1;
3602 set_std_prefix (gcc_exec_prefix
, len
);
3603 add_prefix (&exec_prefixes
, gcc_libexec_prefix
, "GCC",
3604 PREFIX_PRIORITY_LAST
, 0, 0);
3605 add_prefix (&startfile_prefixes
, gcc_exec_prefix
, "GCC",
3606 PREFIX_PRIORITY_LAST
, 0, 0);
3609 /* COMPILER_PATH and LIBRARY_PATH have values
3610 that are lists of directory names with colons. */
3612 temp
= getenv ("COMPILER_PATH");
3615 const char *startp
, *endp
;
3616 char *nstore
= (char *) alloca (strlen (temp
) + 3);
3618 startp
= endp
= temp
;
3621 if (*endp
== PATH_SEPARATOR
|| *endp
== 0)
3623 strncpy (nstore
, startp
, endp
- startp
);
3625 strcpy (nstore
, concat (".", dir_separator_str
, NULL
));
3626 else if (!IS_DIR_SEPARATOR (endp
[-1]))
3628 nstore
[endp
- startp
] = DIR_SEPARATOR
;
3629 nstore
[endp
- startp
+ 1] = 0;
3632 nstore
[endp
- startp
] = 0;
3633 add_prefix (&exec_prefixes
, nstore
, 0,
3634 PREFIX_PRIORITY_LAST
, 0, 0);
3635 add_prefix (&include_prefixes
, nstore
, 0,
3636 PREFIX_PRIORITY_LAST
, 0, 0);
3639 endp
= startp
= endp
+ 1;
3646 temp
= getenv (LIBRARY_PATH_ENV
);
3647 if (temp
&& *cross_compile
== '0')
3649 const char *startp
, *endp
;
3650 char *nstore
= (char *) alloca (strlen (temp
) + 3);
3652 startp
= endp
= temp
;
3655 if (*endp
== PATH_SEPARATOR
|| *endp
== 0)
3657 strncpy (nstore
, startp
, endp
- startp
);
3659 strcpy (nstore
, concat (".", dir_separator_str
, NULL
));
3660 else if (!IS_DIR_SEPARATOR (endp
[-1]))
3662 nstore
[endp
- startp
] = DIR_SEPARATOR
;
3663 nstore
[endp
- startp
+ 1] = 0;
3666 nstore
[endp
- startp
] = 0;
3667 add_prefix (&startfile_prefixes
, nstore
, NULL
,
3668 PREFIX_PRIORITY_LAST
, 0, 1);
3671 endp
= startp
= endp
+ 1;
3678 /* Use LPATH like LIBRARY_PATH (for the CMU build program). */
3679 temp
= getenv ("LPATH");
3680 if (temp
&& *cross_compile
== '0')
3682 const char *startp
, *endp
;
3683 char *nstore
= (char *) alloca (strlen (temp
) + 3);
3685 startp
= endp
= temp
;
3688 if (*endp
== PATH_SEPARATOR
|| *endp
== 0)
3690 strncpy (nstore
, startp
, endp
- startp
);
3692 strcpy (nstore
, concat (".", dir_separator_str
, NULL
));
3693 else if (!IS_DIR_SEPARATOR (endp
[-1]))
3695 nstore
[endp
- startp
] = DIR_SEPARATOR
;
3696 nstore
[endp
- startp
+ 1] = 0;
3699 nstore
[endp
- startp
] = 0;
3700 add_prefix (&startfile_prefixes
, nstore
, NULL
,
3701 PREFIX_PRIORITY_LAST
, 0, 1);
3704 endp
= startp
= endp
+ 1;
3711 /* Process the options and store input files and switches in their
3714 last_language_n_infiles
= -1;
3716 set_option_handlers (&handlers
);
3718 for (j
= 1; j
< decoded_options_count
; j
++)
3720 switch (decoded_options
[j
].opt_index
)
3732 for (j
= 1; j
< decoded_options_count
; j
++)
3734 if (decoded_options
[j
].opt_index
== OPT_SPECIAL_input_file
)
3736 const char *arg
= decoded_options
[j
].arg
;
3737 const char *p
= strrchr (arg
, '@');
3741 #ifdef HAVE_TARGET_OBJECT_SUFFIX
3742 arg
= convert_filename (arg
, 0, access (arg
, F_OK
));
3744 /* For LTO static archive support we handle input file
3745 specifications that are composed of a filename and
3746 an offset like FNAME@OFFSET. */
3749 && sscanf (p
, "@%li%n", &offset
, &consumed
) >= 1
3750 && strlen (p
) == (unsigned int)consumed
)
3752 fname
= (char *)xmalloc (p
- arg
+ 1);
3753 memcpy (fname
, arg
, p
- arg
);
3754 fname
[p
- arg
] = '\0';
3755 /* Only accept non-stdin and existing FNAME parts, otherwise
3756 try with the full name. */
3757 if (strcmp (fname
, "-") == 0 || access (fname
, F_OK
) < 0)
3760 fname
= xstrdup (arg
);
3764 fname
= xstrdup (arg
);
3766 if (strcmp (fname
, "-") != 0 && access (fname
, F_OK
) < 0)
3767 perror_with_name (fname
);
3769 add_infile (arg
, spec_lang
);
3775 read_cmdline_option (&global_options
, &global_options_set
,
3776 decoded_options
+ j
, UNKNOWN_LOCATION
,
3777 CL_DRIVER
, &handlers
, global_dc
);
3780 /* If -save-temps=obj and -o name, create the prefix to use for %b.
3781 Otherwise just make -save-temps=obj the same as -save-temps=cwd. */
3782 if (save_temps_flag
== SAVE_TEMPS_OBJ
&& save_temps_prefix
!= NULL
)
3784 save_temps_length
= strlen (save_temps_prefix
);
3785 temp
= strrchr (lbasename (save_temps_prefix
), '.');
3788 save_temps_length
-= strlen (temp
);
3789 save_temps_prefix
[save_temps_length
] = '\0';
3793 else if (save_temps_prefix
!= NULL
)
3795 free (save_temps_prefix
);
3796 save_temps_prefix
= NULL
;
3799 if (save_temps_flag
&& use_pipes
)
3801 /* -save-temps overrides -pipe, so that temp files are produced */
3802 if (save_temps_flag
)
3803 warning (0, "-pipe ignored because -save-temps specified");
3809 const char *gcd
= getenv ("GCC_COMPARE_DEBUG");
3811 if (gcd
&& gcd
[0] == '-')
3814 compare_debug_opt
= gcd
;
3816 else if (gcd
&& *gcd
&& strcmp (gcd
, "0"))
3819 compare_debug_opt
= "-gtoggle";
3822 else if (compare_debug
< 0)
3825 gcc_assert (!compare_debug_opt
);
3828 /* Set up the search paths. We add directories that we expect to
3829 contain GNU Toolchain components before directories specified by
3830 the machine description so that we will find GNU components (like
3831 the GNU assembler) before those of the host system. */
3833 /* If we don't know where the toolchain has been installed, use the
3834 configured-in locations. */
3835 if (!gcc_exec_prefix
)
3838 add_prefix (&exec_prefixes
, standard_libexec_prefix
, "GCC",
3839 PREFIX_PRIORITY_LAST
, 1, 0);
3840 add_prefix (&exec_prefixes
, standard_libexec_prefix
, "BINUTILS",
3841 PREFIX_PRIORITY_LAST
, 2, 0);
3842 add_prefix (&exec_prefixes
, standard_exec_prefix
, "BINUTILS",
3843 PREFIX_PRIORITY_LAST
, 2, 0);
3845 add_prefix (&startfile_prefixes
, standard_exec_prefix
, "BINUTILS",
3846 PREFIX_PRIORITY_LAST
, 1, 0);
3849 gcc_assert (!IS_ABSOLUTE_PATH (tooldir_base_prefix
));
3850 tooldir_prefix
= concat (tooldir_base_prefix
, spec_machine
,
3851 dir_separator_str
, NULL
);
3853 /* Look for tools relative to the location from which the driver is
3854 running, or, if that is not available, the configured prefix. */
3856 = concat (gcc_exec_prefix
? gcc_exec_prefix
: standard_exec_prefix
,
3857 spec_machine
, dir_separator_str
,
3858 spec_version
, dir_separator_str
, tooldir_prefix
, NULL
);
3860 add_prefix (&exec_prefixes
,
3861 concat (tooldir_prefix
, "bin", dir_separator_str
, NULL
),
3862 "BINUTILS", PREFIX_PRIORITY_LAST
, 0, 0);
3863 add_prefix (&startfile_prefixes
,
3864 concat (tooldir_prefix
, "lib", dir_separator_str
, NULL
),
3865 "BINUTILS", PREFIX_PRIORITY_LAST
, 0, 1);
3867 #if defined(TARGET_SYSTEM_ROOT_RELOCATABLE) && !defined(VMS)
3868 /* If the normal TARGET_SYSTEM_ROOT is inside of $exec_prefix,
3869 then consider it to relocate with the rest of the GCC installation
3870 if GCC_EXEC_PREFIX is set.
3871 ``make_relative_prefix'' is not compiled for VMS, so don't call it. */
3872 if (target_system_root
&& !target_system_root_changed
&& gcc_exec_prefix
)
3874 char *tmp_prefix
= get_relative_prefix (decoded_options
[0].arg
,
3875 standard_bindir_prefix
,
3876 target_system_root
);
3877 if (tmp_prefix
&& access_check (tmp_prefix
, F_OK
) == 0)
3879 target_system_root
= tmp_prefix
;
3880 target_system_root_changed
= 1;
3885 /* More prefixes are enabled in main, after we read the specs file
3886 and determine whether this is cross-compilation or not. */
3888 if (n_infiles
== last_language_n_infiles
&& spec_lang
!= 0)
3889 warning (0, "%<-x %s%> after last input file has no effect", spec_lang
);
3891 if (compare_debug
== 2 || compare_debug
== 3)
3894 switches
[n_switches
].part1
= concat ("fcompare-debug=",
3897 switches
[n_switches
].args
= 0;
3898 switches
[n_switches
].live_cond
= 0;
3899 switches
[n_switches
].validated
= 0;
3900 switches
[n_switches
].ordering
= 0;
3905 /* Ensure we only invoke each subprocess once. */
3906 if (print_subprocess_help
|| print_help_list
|| print_version
)
3910 /* Create a dummy input file, so that we can pass
3911 the help option on to the various sub-processes. */
3912 add_infile ("help-dummy", "c");
3916 switches
[n_switches
].part1
= 0;
3918 infiles
[n_infiles
].name
= 0;
3921 /* Store switches not filtered out by %<S in spec in COLLECT_GCC_OPTIONS
3922 and place that in the environment. */
3925 set_collect_gcc_options (void)
3930 /* Build COLLECT_GCC_OPTIONS to have all of the options specified to
3932 obstack_grow (&collect_obstack
, "COLLECT_GCC_OPTIONS=",
3933 sizeof ("COLLECT_GCC_OPTIONS=") - 1);
3936 for (i
= 0; (int) i
< n_switches
; i
++)
3938 const char *const *args
;
3941 obstack_grow (&collect_obstack
, " ", 1);
3945 /* Ignore elided switches. */
3946 if ((switches
[i
].live_cond
3947 & (SWITCH_IGNORE
| SWITCH_KEEP_FOR_GCC
))
3951 obstack_grow (&collect_obstack
, "'-", 2);
3952 q
= switches
[i
].part1
;
3953 while ((p
= strchr (q
, '\'')))
3955 obstack_grow (&collect_obstack
, q
, p
- q
);
3956 obstack_grow (&collect_obstack
, "'\\''", 4);
3959 obstack_grow (&collect_obstack
, q
, strlen (q
));
3960 obstack_grow (&collect_obstack
, "'", 1);
3962 for (args
= switches
[i
].args
; args
&& *args
; args
++)
3964 obstack_grow (&collect_obstack
, " '", 2);
3966 while ((p
= strchr (q
, '\'')))
3968 obstack_grow (&collect_obstack
, q
, p
- q
);
3969 obstack_grow (&collect_obstack
, "'\\''", 4);
3972 obstack_grow (&collect_obstack
, q
, strlen (q
));
3973 obstack_grow (&collect_obstack
, "'", 1);
3976 obstack_grow (&collect_obstack
, "\0", 1);
3977 xputenv (XOBFINISH (&collect_obstack
, char *));
3980 /* Process a spec string, accumulating and running commands. */
3982 /* These variables describe the input file name.
3983 input_file_number is the index on outfiles of this file,
3984 so that the output file name can be stored for later use by %o.
3985 input_basename is the start of the part of the input file
3986 sans all directory names, and basename_length is the number
3987 of characters starting there excluding the suffix .c or whatever. */
3989 static const char *gcc_input_filename
;
3990 static int input_file_number
;
3991 size_t input_filename_length
;
3992 static int basename_length
;
3993 static int suffixed_basename_length
;
3994 static const char *input_basename
;
3995 static const char *input_suffix
;
3996 #ifndef HOST_LACKS_INODE_NUMBERS
3997 static struct stat input_stat
;
3999 static int input_stat_set
;
4001 /* The compiler used to process the current input file. */
4002 static struct compiler
*input_file_compiler
;
4004 /* These are variables used within do_spec and do_spec_1. */
4006 /* Nonzero if an arg has been started and not yet terminated
4007 (with space, tab or newline). */
4008 static int arg_going
;
4010 /* Nonzero means %d or %g has been seen; the next arg to be terminated
4011 is a temporary file name. */
4012 static int delete_this_arg
;
4014 /* Nonzero means %w has been seen; the next arg to be terminated
4015 is the output file name of this compilation. */
4016 static int this_is_output_file
;
4018 /* Nonzero means %s has been seen; the next arg to be terminated
4019 is the name of a library file and we should try the standard
4020 search dirs for it. */
4021 static int this_is_library_file
;
4023 /* Nonzero means %T has been seen; the next arg to be terminated
4024 is the name of a linker script and we should try all of the
4025 standard search dirs for it. If it is found insert a --script
4026 command line switch and then substitute the full path in place,
4027 otherwise generate an error message. */
4028 static int this_is_linker_script
;
4030 /* Nonzero means that the input of this command is coming from a pipe. */
4031 static int input_from_pipe
;
4033 /* Nonnull means substitute this for any suffix when outputting a switches
4035 static const char *suffix_subst
;
4037 /* If there is an argument being accumulated, terminate it and store it. */
4040 end_going_arg (void)
4046 obstack_1grow (&obstack
, 0);
4047 string
= XOBFINISH (&obstack
, const char *);
4048 if (this_is_library_file
)
4049 string
= find_file (string
);
4050 if (this_is_linker_script
)
4052 char * full_script_path
= find_a_file (&startfile_prefixes
, string
, R_OK
, true);
4054 if (full_script_path
== NULL
)
4056 error ("unable to locate default linker script %qs in the library search paths", string
);
4057 /* Script was not found on search path. */
4060 store_arg ("--script", false, false);
4061 string
= full_script_path
;
4063 store_arg (string
, delete_this_arg
, this_is_output_file
);
4064 if (this_is_output_file
)
4065 outfiles
[input_file_number
] = string
;
4071 /* Parse the WRAPPER string which is a comma separated list of the command line
4072 and insert them into the beginning of argbuf. */
4075 insert_wrapper (const char *wrapper
)
4079 char *buf
= xstrdup (wrapper
);
4081 unsigned int old_length
= VEC_length (const_char_p
, argbuf
);
4089 while ((p
= strchr (p
, ',')) != NULL
);
4091 VEC_safe_grow (const_char_p
, heap
, argbuf
, old_length
+ n
);
4092 memmove (VEC_address (const_char_p
, argbuf
) + n
,
4093 VEC_address (const_char_p
, argbuf
),
4094 old_length
* sizeof (const_char_p
));
4105 VEC_replace (const_char_p
, argbuf
, i
, p
);
4108 while ((p
= strchr (p
, ',')) != NULL
);
4109 gcc_assert (i
== n
);
4112 /* Process the spec SPEC and run the commands specified therein.
4113 Returns 0 if the spec is successfully processed; -1 if failed. */
4116 do_spec (const char *spec
)
4120 value
= do_spec_2 (spec
);
4122 /* Force out any unfinished command.
4123 If -pipe, this forces out the last command if it ended in `|'. */
4126 if (VEC_length (const_char_p
, argbuf
) > 0
4127 && !strcmp (VEC_last (const_char_p
, argbuf
), "|"))
4128 VEC_pop (const_char_p
, argbuf
);
4130 set_collect_gcc_options ();
4132 if (VEC_length (const_char_p
, argbuf
) > 0)
4140 do_spec_2 (const char *spec
)
4146 delete_this_arg
= 0;
4147 this_is_output_file
= 0;
4148 this_is_library_file
= 0;
4149 this_is_linker_script
= 0;
4150 input_from_pipe
= 0;
4151 suffix_subst
= NULL
;
4153 result
= do_spec_1 (spec
, 0, NULL
);
4161 /* Process the given spec string and add any new options to the end
4162 of the switches/n_switches array. */
4165 do_option_spec (const char *name
, const char *spec
)
4167 unsigned int i
, value_count
, value_len
;
4168 const char *p
, *q
, *value
;
4169 char *tmp_spec
, *tmp_spec_p
;
4171 if (configure_default_options
[0].name
== NULL
)
4174 for (i
= 0; i
< ARRAY_SIZE (configure_default_options
); i
++)
4175 if (strcmp (configure_default_options
[i
].name
, name
) == 0)
4177 if (i
== ARRAY_SIZE (configure_default_options
))
4180 value
= configure_default_options
[i
].value
;
4181 value_len
= strlen (value
);
4183 /* Compute the size of the final spec. */
4186 while ((p
= strstr (p
, "%(VALUE)")) != NULL
)
4192 /* Replace each %(VALUE) by the specified value. */
4193 tmp_spec
= (char *) alloca (strlen (spec
) + 1
4194 + value_count
* (value_len
- strlen ("%(VALUE)")));
4195 tmp_spec_p
= tmp_spec
;
4197 while ((p
= strstr (q
, "%(VALUE)")) != NULL
)
4199 memcpy (tmp_spec_p
, q
, p
- q
);
4200 tmp_spec_p
= tmp_spec_p
+ (p
- q
);
4201 memcpy (tmp_spec_p
, value
, value_len
);
4202 tmp_spec_p
+= value_len
;
4203 q
= p
+ strlen ("%(VALUE)");
4205 strcpy (tmp_spec_p
, q
);
4207 do_self_spec (tmp_spec
);
4210 /* Process the given spec string and add any new options to the end
4211 of the switches/n_switches array. */
4214 do_self_spec (const char *spec
)
4219 do_spec_1 (" ", 0, NULL
);
4221 /* Mark %<S switches processed by do_self_spec to be ignored permanently.
4222 do_self_specs adds the replacements to switches array, so it shouldn't
4223 be processed afterwards. */
4224 for (i
= 0; i
< n_switches
; i
++)
4225 if ((switches
[i
].live_cond
& SWITCH_IGNORE
))
4226 switches
[i
].live_cond
|= SWITCH_IGNORE_PERMANENTLY
;
4228 if (VEC_length (const_char_p
, argbuf
) > 0)
4230 const char **argbuf_copy
;
4231 struct cl_decoded_option
*decoded_options
;
4232 struct cl_option_handlers handlers
;
4233 unsigned int decoded_options_count
;
4236 /* Create a copy of argbuf with a dummy argv[0] entry for
4237 decode_cmdline_options_to_array. */
4238 argbuf_copy
= XNEWVEC (const char *,
4239 VEC_length (const_char_p
, argbuf
) + 1);
4240 argbuf_copy
[0] = "";
4241 memcpy (argbuf_copy
+ 1, VEC_address (const_char_p
, argbuf
),
4242 VEC_length (const_char_p
, argbuf
) * sizeof (const char *));
4244 decode_cmdline_options_to_array (VEC_length (const_char_p
, argbuf
) + 1,
4246 CL_DRIVER
, &decoded_options
,
4247 &decoded_options_count
);
4249 set_option_handlers (&handlers
);
4251 for (j
= 1; j
< decoded_options_count
; j
++)
4253 switch (decoded_options
[j
].opt_index
)
4255 case OPT_SPECIAL_input_file
:
4256 /* Specs should only generate options, not input
4258 if (strcmp (decoded_options
[j
].arg
, "-") != 0)
4259 fatal_error ("switch %qs does not start with %<-%>",
4260 decoded_options
[j
].arg
);
4262 fatal_error ("spec-generated switch is just %<-%>");
4265 case OPT_fcompare_debug_second
:
4266 case OPT_fcompare_debug
:
4267 case OPT_fcompare_debug_
:
4269 /* Avoid duplicate processing of some options from
4270 compare-debug specs; just save them here. */
4271 save_switch (decoded_options
[j
].canonical_option
[0],
4272 (decoded_options
[j
].canonical_option_num_elements
4274 &decoded_options
[j
].canonical_option
[1], false);
4278 read_cmdline_option (&global_options
, &global_options_set
,
4279 decoded_options
+ j
, UNKNOWN_LOCATION
,
4280 CL_DRIVER
, &handlers
, global_dc
);
4286 switches
[n_switches
].part1
= 0;
4290 /* Callback for processing %D and %I specs. */
4292 struct spec_path_info
{
4297 bool separate_options
;
4301 spec_path (char *path
, void *data
)
4303 struct spec_path_info
*info
= (struct spec_path_info
*) data
;
4307 if (info
->omit_relative
&& !IS_ABSOLUTE_PATH (path
))
4310 if (info
->append_len
!= 0)
4312 len
= strlen (path
);
4313 memcpy (path
+ len
, info
->append
, info
->append_len
+ 1);
4316 if (!is_directory (path
, true))
4319 do_spec_1 (info
->option
, 1, NULL
);
4320 if (info
->separate_options
)
4321 do_spec_1 (" ", 0, NULL
);
4323 if (info
->append_len
== 0)
4325 len
= strlen (path
);
4326 save
= path
[len
- 1];
4327 if (IS_DIR_SEPARATOR (path
[len
- 1]))
4328 path
[len
- 1] = '\0';
4331 do_spec_1 (path
, 1, NULL
);
4332 do_spec_1 (" ", 0, NULL
);
4334 /* Must not damage the original path. */
4335 if (info
->append_len
== 0)
4336 path
[len
- 1] = save
;
4341 /* Create a temporary FILE with the contents of ARGV. Add @FILE to the
4345 create_at_file (char **argv
)
4347 char *temp_file
= make_temp_file ("");
4348 char *at_argument
= concat ("@", temp_file
, NULL
);
4349 FILE *f
= fopen (temp_file
, "w");
4353 fatal_error ("could not open temporary response file %s",
4356 status
= writeargv (argv
, f
);
4359 fatal_error ("could not write to temporary response file %s",
4362 status
= fclose (f
);
4365 fatal_error ("could not close temporary response file %s",
4368 store_arg (at_argument
, 0, 0);
4370 record_temp_file (temp_file
, !save_temps_flag
, !save_temps_flag
);
4373 /* True if we should compile INFILE. */
4376 compile_input_file_p (struct infile
*infile
)
4378 if ((!infile
->language
) || (infile
->language
[0] != '*'))
4379 if (infile
->incompiler
== input_file_compiler
)
4384 /* Process each member of VEC as a spec. */
4387 do_specs_vec (VEC(char_p
,heap
) *vec
)
4392 FOR_EACH_VEC_ELT (char_p
, vec
, ix
, opt
)
4394 do_spec_1 (opt
, 1, NULL
);
4395 /* Make each accumulated option a separate argument. */
4396 do_spec_1 (" ", 0, NULL
);
4400 /* Process the sub-spec SPEC as a portion of a larger spec.
4401 This is like processing a whole spec except that we do
4402 not initialize at the beginning and we do not supply a
4403 newline by default at the end.
4404 INSWITCH nonzero means don't process %-sequences in SPEC;
4405 in this case, % is treated as an ordinary character.
4406 This is used while substituting switches.
4407 INSWITCH nonzero also causes SPC not to terminate an argument.
4409 Value is zero unless a line was finished
4410 and the command on that line reported an error. */
4413 do_spec_1 (const char *spec
, int inswitch
, const char *soft_matched_part
)
4415 const char *p
= spec
;
4421 /* If substituting a switch, treat all chars like letters.
4422 Otherwise, NL, SPC, TAB and % are special. */
4423 switch (inswitch
? 'a' : c
)
4428 if (VEC_length (const_char_p
, argbuf
) > 0
4429 && !strcmp (VEC_last (const_char_p
, argbuf
), "|"))
4431 /* A `|' before the newline means use a pipe here,
4432 but only if -pipe was specified.
4433 Otherwise, execute now and don't pass the `|' as an arg. */
4436 input_from_pipe
= 1;
4440 VEC_pop (const_char_p
, argbuf
);
4443 set_collect_gcc_options ();
4445 if (VEC_length (const_char_p
, argbuf
) > 0)
4451 /* Reinitialize for a new command, and for a new argument. */
4454 delete_this_arg
= 0;
4455 this_is_output_file
= 0;
4456 this_is_library_file
= 0;
4457 this_is_linker_script
= 0;
4458 input_from_pipe
= 0;
4465 obstack_1grow (&obstack
, c
);
4473 /* Reinitialize for a new argument. */
4474 delete_this_arg
= 0;
4475 this_is_output_file
= 0;
4476 this_is_library_file
= 0;
4477 this_is_linker_script
= 0;
4484 fatal_error ("spec %qs invalid", spec
);
4487 if (save_temps_length
)
4488 obstack_grow (&obstack
, save_temps_prefix
, save_temps_length
);
4490 obstack_grow (&obstack
, input_basename
, basename_length
);
4491 if (compare_debug
< 0)
4492 obstack_grow (&obstack
, ".gk", 3);
4497 if (save_temps_length
)
4498 obstack_grow (&obstack
, save_temps_prefix
, save_temps_length
);
4500 obstack_grow (&obstack
, input_basename
, suffixed_basename_length
);
4501 if (compare_debug
< 0)
4502 obstack_grow (&obstack
, ".gk", 3);
4507 delete_this_arg
= 2;
4510 /* Dump out the directories specified with LIBRARY_PATH,
4511 followed by the absolute directories
4512 that we search for startfiles. */
4515 struct spec_path_info info
;
4518 info
.append_len
= 0;
4519 #ifdef RELATIVE_PREFIX_NOT_LINKDIR
4520 /* Used on systems which record the specified -L dirs
4521 and use them to search for dynamic linking.
4522 Relative directories always come from -B,
4523 and it is better not to use them for searching
4524 at run time. In particular, stage1 loses. */
4525 info
.omit_relative
= true;
4527 info
.omit_relative
= false;
4529 info
.separate_options
= false;
4531 for_each_path (&startfile_prefixes
, true, 0, spec_path
, &info
);
4536 /* %efoo means report an error with `foo' as error message
4537 and don't execute any more commands for this file. */
4541 while (*p
!= 0 && *p
!= '\n')
4543 buf
= (char *) alloca (p
- q
+ 1);
4544 strncpy (buf
, q
, p
- q
);
4546 error ("%s", _(buf
));
4551 /* %nfoo means report a notice with `foo' on stderr. */
4555 while (*p
!= 0 && *p
!= '\n')
4557 buf
= (char *) alloca (p
- q
+ 1);
4558 strncpy (buf
, q
, p
- q
);
4560 inform (0, "%s", _(buf
));
4570 /* If save_temps_flag is off, and the HOST_BIT_BUCKET is
4571 defined, and it is not a directory, and it is
4572 writable, use it. Otherwise, treat this like any
4573 other temporary file. */
4575 if ((!save_temps_flag
)
4576 && (stat (HOST_BIT_BUCKET
, &st
) == 0) && (!S_ISDIR (st
.st_mode
))
4577 && (access (HOST_BIT_BUCKET
, W_OK
) == 0))
4579 obstack_grow (&obstack
, HOST_BIT_BUCKET
,
4580 strlen (HOST_BIT_BUCKET
));
4581 delete_this_arg
= 0;
4586 goto create_temp_file
;
4590 obstack_1grow (&obstack
, '-');
4591 delete_this_arg
= 0;
4594 /* consume suffix */
4595 while (*p
== '.' || ISALNUM ((unsigned char) *p
))
4597 if (p
[0] == '%' && p
[1] == 'O')
4602 goto create_temp_file
;
4606 /* consume suffix */
4607 while (*p
== '.' || ISALNUM ((unsigned char) *p
))
4609 if (p
[0] == '%' && p
[1] == 'O')
4614 goto create_temp_file
;
4620 struct temp_name
*t
;
4622 const char *suffix
= p
;
4623 char *saved_suffix
= NULL
;
4625 while (*p
== '.' || ISALNUM ((unsigned char) *p
))
4627 suffix_length
= p
- suffix
;
4628 if (p
[0] == '%' && p
[1] == 'O')
4631 /* We don't support extra suffix characters after %O. */
4632 if (*p
== '.' || ISALNUM ((unsigned char) *p
))
4633 fatal_error ("spec %qs has invalid %<%%0%c%>", spec
, *p
);
4634 if (suffix_length
== 0)
4635 suffix
= TARGET_OBJECT_SUFFIX
;
4639 = XNEWVEC (char, suffix_length
4640 + strlen (TARGET_OBJECT_SUFFIX
));
4641 strncpy (saved_suffix
, suffix
, suffix_length
);
4642 strcpy (saved_suffix
+ suffix_length
,
4643 TARGET_OBJECT_SUFFIX
);
4645 suffix_length
+= strlen (TARGET_OBJECT_SUFFIX
);
4648 if (compare_debug
< 0)
4650 suffix
= concat (".gk", suffix
, NULL
);
4654 /* If -save-temps=obj and -o were specified, use that for the
4656 if (save_temps_length
)
4659 temp_filename_length
4660 = save_temps_length
+ suffix_length
+ 1;
4661 tmp
= (char *) alloca (temp_filename_length
);
4662 memcpy (tmp
, save_temps_prefix
, save_temps_length
);
4663 memcpy (tmp
+ save_temps_length
, suffix
, suffix_length
);
4664 tmp
[save_temps_length
+ suffix_length
] = '\0';
4665 temp_filename
= save_string (tmp
,
4666 temp_filename_length
+ 1);
4667 obstack_grow (&obstack
, temp_filename
,
4668 temp_filename_length
);
4670 delete_this_arg
= 0;
4674 /* If the gcc_input_filename has the same suffix specified
4675 for the %g, %u, or %U, and -save-temps is specified,
4676 we could end up using that file as an intermediate
4677 thus clobbering the user's source file (.e.g.,
4678 gcc -save-temps foo.s would clobber foo.s with the
4679 output of cpp0). So check for this condition and
4680 generate a temp file as the intermediate. */
4682 if (save_temps_flag
)
4685 temp_filename_length
= basename_length
+ suffix_length
+ 1;
4686 tmp
= (char *) alloca (temp_filename_length
);
4687 memcpy (tmp
, input_basename
, basename_length
);
4688 memcpy (tmp
+ basename_length
, suffix
, suffix_length
);
4689 tmp
[basename_length
+ suffix_length
] = '\0';
4690 temp_filename
= tmp
;
4692 if (strcmp (temp_filename
, gcc_input_filename
) != 0)
4694 #ifndef HOST_LACKS_INODE_NUMBERS
4695 struct stat st_temp
;
4697 /* Note, set_input() resets input_stat_set to 0. */
4698 if (input_stat_set
== 0)
4700 input_stat_set
= stat (gcc_input_filename
,
4702 if (input_stat_set
>= 0)
4706 /* If we have the stat for the gcc_input_filename
4707 and we can do the stat for the temp_filename
4708 then the they could still refer to the same
4709 file if st_dev/st_ino's are the same. */
4710 if (input_stat_set
!= 1
4711 || stat (temp_filename
, &st_temp
) < 0
4712 || input_stat
.st_dev
!= st_temp
.st_dev
4713 || input_stat
.st_ino
!= st_temp
.st_ino
)
4715 /* Just compare canonical pathnames. */
4716 char* input_realname
= lrealpath (gcc_input_filename
);
4717 char* temp_realname
= lrealpath (temp_filename
);
4718 bool files_differ
= strcmp (input_realname
, temp_realname
);
4719 free (input_realname
);
4720 free (temp_realname
);
4724 temp_filename
= save_string (temp_filename
,
4725 temp_filename_length
+ 1);
4726 obstack_grow (&obstack
, temp_filename
,
4727 temp_filename_length
);
4729 delete_this_arg
= 0;
4735 /* See if we already have an association of %g/%u/%U and
4737 for (t
= temp_names
; t
; t
= t
->next
)
4738 if (t
->length
== suffix_length
4739 && strncmp (t
->suffix
, suffix
, suffix_length
) == 0
4740 && t
->unique
== (c
== 'u' || c
== 'U' || c
== 'j'))
4743 /* Make a new association if needed. %u and %j
4745 if (t
== 0 || c
== 'u' || c
== 'j')
4749 t
= XNEW (struct temp_name
);
4750 t
->next
= temp_names
;
4753 t
->length
= suffix_length
;
4756 t
->suffix
= saved_suffix
;
4757 saved_suffix
= NULL
;
4760 t
->suffix
= save_string (suffix
, suffix_length
);
4761 t
->unique
= (c
== 'u' || c
== 'U' || c
== 'j');
4762 temp_filename
= make_temp_file (t
->suffix
);
4763 temp_filename_length
= strlen (temp_filename
);
4764 t
->filename
= temp_filename
;
4765 t
->filename_length
= temp_filename_length
;
4769 free (saved_suffix
);
4771 obstack_grow (&obstack
, t
->filename
, t
->filename_length
);
4772 delete_this_arg
= 1;
4780 if (at_file_supplied
)
4782 /* We are going to expand `%i' to `@FILE', where FILE
4783 is a newly-created temporary filename. The filenames
4784 that would usually be expanded in place of %o will be
4785 written to the temporary file. */
4790 for (i
= 0; i
< n_infiles
; i
++)
4791 if (compile_input_file_p (&infiles
[i
]))
4794 argv
= (char **) alloca (sizeof (char *) * (n_files
+ 1));
4796 /* Copy the strings over. */
4797 for (i
= 0, j
= 0; i
< n_infiles
; i
++)
4798 if (compile_input_file_p (&infiles
[i
]))
4800 argv
[j
] = CONST_CAST (char *, infiles
[i
].name
);
4801 infiles
[i
].compiled
= true;
4806 create_at_file (argv
);
4809 for (i
= 0; (int) i
< n_infiles
; i
++)
4810 if (compile_input_file_p (&infiles
[i
]))
4812 store_arg (infiles
[i
].name
, 0, 0);
4813 infiles
[i
].compiled
= true;
4818 obstack_grow (&obstack
, gcc_input_filename
,
4819 input_filename_length
);
4826 struct spec_path_info info
;
4830 do_spec_1 ("-imultilib", 1, NULL
);
4831 /* Make this a separate argument. */
4832 do_spec_1 (" ", 0, NULL
);
4833 do_spec_1 (multilib_dir
, 1, NULL
);
4834 do_spec_1 (" ", 0, NULL
);
4837 if (gcc_exec_prefix
)
4839 do_spec_1 ("-iprefix", 1, NULL
);
4840 /* Make this a separate argument. */
4841 do_spec_1 (" ", 0, NULL
);
4842 do_spec_1 (gcc_exec_prefix
, 1, NULL
);
4843 do_spec_1 (" ", 0, NULL
);
4846 if (target_system_root_changed
||
4847 (target_system_root
&& target_sysroot_hdrs_suffix
))
4849 do_spec_1 ("-isysroot", 1, NULL
);
4850 /* Make this a separate argument. */
4851 do_spec_1 (" ", 0, NULL
);
4852 do_spec_1 (target_system_root
, 1, NULL
);
4853 if (target_sysroot_hdrs_suffix
)
4854 do_spec_1 (target_sysroot_hdrs_suffix
, 1, NULL
);
4855 do_spec_1 (" ", 0, NULL
);
4858 info
.option
= "-isystem";
4859 info
.append
= "include";
4860 info
.append_len
= strlen (info
.append
);
4861 info
.omit_relative
= false;
4862 info
.separate_options
= true;
4864 for_each_path (&include_prefixes
, false, info
.append_len
,
4867 info
.append
= "include-fixed";
4868 if (*sysroot_hdrs_suffix_spec
)
4869 info
.append
= concat (info
.append
, dir_separator_str
,
4870 multilib_dir
, NULL
);
4871 info
.append_len
= strlen (info
.append
);
4872 for_each_path (&include_prefixes
, false, info
.append_len
,
4879 int max
= n_infiles
;
4880 max
+= lang_specific_extra_outfiles
;
4882 if (HAVE_GNU_LD
&& at_file_supplied
)
4884 /* We are going to expand `%o' to `@FILE', where FILE
4885 is a newly-created temporary filename. The filenames
4886 that would usually be expanded in place of %o will be
4887 written to the temporary file. */
4892 /* Convert OUTFILES into a form suitable for writeargv. */
4894 /* Determine how many are non-NULL. */
4895 for (n_files
= 0, i
= 0; i
< max
; i
++)
4896 n_files
+= outfiles
[i
] != NULL
;
4898 argv
= (char **) alloca (sizeof (char *) * (n_files
+ 1));
4900 /* Copy the strings over. */
4901 for (i
= 0, j
= 0; i
< max
; i
++)
4904 argv
[j
] = CONST_CAST (char *, outfiles
[i
]);
4909 create_at_file (argv
);
4912 for (i
= 0; i
< max
; i
++)
4914 store_arg (outfiles
[i
], 0, 0);
4919 obstack_grow (&obstack
, TARGET_OBJECT_SUFFIX
, strlen (TARGET_OBJECT_SUFFIX
));
4924 this_is_library_file
= 1;
4928 this_is_linker_script
= 1;
4932 outfiles
[input_file_number
] = NULL
;
4936 this_is_output_file
= 1;
4941 unsigned int cur_index
= VEC_length (const_char_p
, argbuf
);
4942 /* Handle the {...} following the %W. */
4944 fatal_error ("spec %qs has invalid %<%%W%c%>", spec
, *p
);
4945 p
= handle_braces (p
+ 1);
4949 /* If any args were output, mark the last one for deletion
4951 if (VEC_length (const_char_p
, argbuf
) != cur_index
)
4952 record_temp_file (VEC_last (const_char_p
, argbuf
), 0, 1);
4956 /* %x{OPTION} records OPTION for %X to output. */
4964 /* Skip past the option value and make a copy. */
4966 fatal_error ("spec %qs has invalid %<%%x%c%>", spec
, *p
);
4969 string
= save_string (p1
+ 1, p
- p1
- 2);
4971 /* See if we already recorded this option. */
4972 FOR_EACH_VEC_ELT (char_p
, linker_options
, ix
, opt
)
4973 if (! strcmp (string
, opt
))
4979 /* This option is new; add it. */
4980 add_linker_option (string
, strlen (string
));
4984 /* Dump out the options accumulated previously using %x. */
4986 do_specs_vec (linker_options
);
4989 /* Dump out the options accumulated previously using -Wa,. */
4991 do_specs_vec (assembler_options
);
4994 /* Dump out the options accumulated previously using -Wp,. */
4996 do_specs_vec (preprocessor_options
);
4999 /* Here are digits and numbers that just process
5000 a certain constant string as a spec. */
5003 value
= do_spec_1 (cc1_spec
, 0, NULL
);
5009 value
= do_spec_1 (cc1plus_spec
, 0, NULL
);
5015 value
= do_spec_1 (asm_spec
, 0, NULL
);
5021 value
= do_spec_1 (asm_final_spec
, 0, NULL
);
5028 const char *const spec
5029 = (input_file_compiler
->cpp_spec
5030 ? input_file_compiler
->cpp_spec
5032 value
= do_spec_1 (spec
, 0, NULL
);
5039 value
= do_spec_1 (endfile_spec
, 0, NULL
);
5045 value
= do_spec_1 (link_spec
, 0, NULL
);
5051 value
= do_spec_1 (lib_spec
, 0, NULL
);
5057 value
= do_spec_1 (libgcc_spec
, 0, NULL
);
5063 /* We assume there is a directory
5064 separator at the end of this string. */
5065 if (target_system_root
)
5067 obstack_grow (&obstack
, target_system_root
,
5068 strlen (target_system_root
));
5069 if (target_sysroot_suffix
)
5070 obstack_grow (&obstack
, target_sysroot_suffix
,
5071 strlen (target_sysroot_suffix
));
5076 value
= do_spec_1 (startfile_spec
, 0, NULL
);
5081 /* Here we define characters other than letters and digits. */
5084 p
= handle_braces (p
);
5090 p
= handle_spec_function (p
);
5096 obstack_1grow (&obstack
, '%');
5103 while (p
[len
] && p
[len
] != ' ' && p
[len
] != '%')
5105 suffix_subst
= save_string (p
- 1, len
+ 1);
5110 /* Henceforth ignore the option(s) matching the pattern
5116 int have_wildcard
= 0;
5121 switch_option
= SWITCH_IGNORE
| SWITCH_KEEP_FOR_GCC
;
5123 switch_option
= SWITCH_IGNORE
;
5125 while (p
[len
] && p
[len
] != ' ' && p
[len
] != '\t')
5128 if (p
[len
-1] == '*')
5131 for (i
= 0; i
< n_switches
; i
++)
5132 if (!strncmp (switches
[i
].part1
, p
, len
- have_wildcard
)
5133 && (have_wildcard
|| switches
[i
].part1
[len
] == '\0'))
5135 switches
[i
].live_cond
|= switch_option
;
5136 switches
[i
].validated
= 1;
5144 if (soft_matched_part
)
5146 do_spec_1 (soft_matched_part
, 1, NULL
);
5147 do_spec_1 (" ", 0, NULL
);
5150 /* Catch the case where a spec string contains something like
5151 '%{foo:%*}'. i.e. there is no * in the pattern on the left
5152 hand side of the :. */
5153 error ("spec failure: %<%%*%> has not been initialized by pattern match");
5156 /* Process a string found as the value of a spec given by name.
5157 This feature allows individual machine descriptions
5158 to add and use their own specs.
5159 %[...] modifies -D options the way %P does;
5160 %(...) uses the spec unmodified. */
5162 warning (0, "use of obsolete %%[ operator in specs");
5165 const char *name
= p
;
5166 struct spec_list
*sl
;
5169 /* The string after the S/P is the name of a spec that is to be
5171 while (*p
&& *p
!= ')' && *p
!= ']')
5174 /* See if it's in the list. */
5175 for (len
= p
- name
, sl
= specs
; sl
; sl
= sl
->next
)
5176 if (sl
->name_len
== len
&& !strncmp (sl
->name
, name
, len
))
5178 name
= *(sl
->ptr_spec
);
5180 fnotice (stderr
, "Processing spec %c%s%c, which is '%s'\n",
5181 c
, sl
->name
, (c
== '(') ? ')' : ']', name
);
5190 value
= do_spec_1 (name
, 0, NULL
);
5196 char *x
= (char *) alloca (strlen (name
) * 2 + 1);
5198 const char *y
= name
;
5201 /* Copy all of NAME into BUF, but put __ after
5202 every -D and at the end of each arg. */
5205 if (! strncmp (y
, "-D", 2))
5216 && (*y
== ' ' || *y
== '\t' || *y
== '='
5217 || *y
== '}' || *y
== 0))
5230 value
= do_spec_1 (buf
, 0, NULL
);
5236 /* Discard the closing paren or bracket. */
5243 error ("spec failure: unrecognized spec option %qc", c
);
5249 /* Backslash: treat next character as ordinary. */
5254 /* Ordinary character: put it into the current argument. */
5255 obstack_1grow (&obstack
, c
);
5259 /* End of string. If we are processing a spec function, we need to
5260 end any pending argument. */
5261 if (processing_spec_function
)
5267 /* Look up a spec function. */
5269 static const struct spec_function
*
5270 lookup_spec_function (const char *name
)
5272 const struct spec_function
*sf
;
5274 for (sf
= static_spec_functions
; sf
->name
!= NULL
; sf
++)
5275 if (strcmp (sf
->name
, name
) == 0)
5281 /* Evaluate a spec function. */
5284 eval_spec_function (const char *func
, const char *args
)
5286 const struct spec_function
*sf
;
5287 const char *funcval
;
5289 /* Saved spec processing context. */
5290 VEC(const_char_p
,heap
) *save_argbuf
;
5293 int save_delete_this_arg
;
5294 int save_this_is_output_file
;
5295 int save_this_is_library_file
;
5296 int save_input_from_pipe
;
5297 int save_this_is_linker_script
;
5298 const char *save_suffix_subst
;
5301 sf
= lookup_spec_function (func
);
5303 fatal_error ("unknown spec function %qs", func
);
5305 /* Push the spec processing context. */
5306 save_argbuf
= argbuf
;
5308 save_arg_going
= arg_going
;
5309 save_delete_this_arg
= delete_this_arg
;
5310 save_this_is_output_file
= this_is_output_file
;
5311 save_this_is_library_file
= this_is_library_file
;
5312 save_this_is_linker_script
= this_is_linker_script
;
5313 save_input_from_pipe
= input_from_pipe
;
5314 save_suffix_subst
= suffix_subst
;
5316 /* Create a new spec processing context, and build the function
5320 if (do_spec_2 (args
) < 0)
5321 fatal_error ("error in args to spec function %qs", func
);
5323 /* argbuf_index is an index for the next argument to be inserted, and
5324 so contains the count of the args already inserted. */
5326 funcval
= (*sf
->func
) (VEC_length (const_char_p
, argbuf
),
5327 VEC_address (const_char_p
, argbuf
));
5329 /* Pop the spec processing context. */
5330 VEC_free (const_char_p
, heap
, argbuf
);
5331 argbuf
= save_argbuf
;
5333 arg_going
= save_arg_going
;
5334 delete_this_arg
= save_delete_this_arg
;
5335 this_is_output_file
= save_this_is_output_file
;
5336 this_is_library_file
= save_this_is_library_file
;
5337 this_is_linker_script
= save_this_is_linker_script
;
5338 input_from_pipe
= save_input_from_pipe
;
5339 suffix_subst
= save_suffix_subst
;
5344 /* Handle a spec function call of the form:
5348 ARGS is processed as a spec in a separate context and split into an
5349 argument vector in the normal fashion. The function returns a string
5350 containing a spec which we then process in the caller's context, or
5351 NULL if no processing is required. */
5354 handle_spec_function (const char *p
)
5357 const char *endp
, *funcval
;
5360 processing_spec_function
++;
5362 /* Get the function name. */
5363 for (endp
= p
; *endp
!= '\0'; endp
++)
5365 if (*endp
== '(') /* ) */
5367 /* Only allow [A-Za-z0-9], -, and _ in function names. */
5368 if (!ISALNUM (*endp
) && !(*endp
== '-' || *endp
== '_'))
5369 fatal_error ("malformed spec function name");
5371 if (*endp
!= '(') /* ) */
5372 fatal_error ("no arguments for spec function");
5373 func
= save_string (p
, endp
- p
);
5376 /* Get the arguments. */
5377 for (count
= 0; *endp
!= '\0'; endp
++)
5386 else if (*endp
== '(') /* ) */
5391 fatal_error ("malformed spec function arguments");
5392 args
= save_string (p
, endp
- p
);
5395 /* p now points to just past the end of the spec function expression. */
5397 funcval
= eval_spec_function (func
, args
);
5398 if (funcval
!= NULL
&& do_spec_1 (funcval
, 0, NULL
) < 0)
5404 processing_spec_function
--;
5409 /* Inline subroutine of handle_braces. Returns true if the current
5410 input suffix matches the atom bracketed by ATOM and END_ATOM. */
5412 input_suffix_matches (const char *atom
, const char *end_atom
)
5414 return (input_suffix
5415 && !strncmp (input_suffix
, atom
, end_atom
- atom
)
5416 && input_suffix
[end_atom
- atom
] == '\0');
5419 /* Subroutine of handle_braces. Returns true if the current
5420 input file's spec name matches the atom bracketed by ATOM and END_ATOM. */
5422 input_spec_matches (const char *atom
, const char *end_atom
)
5424 return (input_file_compiler
5425 && input_file_compiler
->suffix
5426 && input_file_compiler
->suffix
[0] != '\0'
5427 && !strncmp (input_file_compiler
->suffix
+ 1, atom
,
5429 && input_file_compiler
->suffix
[end_atom
- atom
+ 1] == '\0');
5432 /* Subroutine of handle_braces. Returns true if a switch
5433 matching the atom bracketed by ATOM and END_ATOM appeared on the
5436 switch_matches (const char *atom
, const char *end_atom
, int starred
)
5439 int len
= end_atom
- atom
;
5440 int plen
= starred
? len
: -1;
5442 for (i
= 0; i
< n_switches
; i
++)
5443 if (!strncmp (switches
[i
].part1
, atom
, len
)
5444 && (starred
|| switches
[i
].part1
[len
] == '\0')
5445 && check_live_switch (i
, plen
))
5451 /* Inline subroutine of handle_braces. Mark all of the switches which
5452 match ATOM (extends to END_ATOM; STARRED indicates whether there
5453 was a star after the atom) for later processing. */
5455 mark_matching_switches (const char *atom
, const char *end_atom
, int starred
)
5458 int len
= end_atom
- atom
;
5459 int plen
= starred
? len
: -1;
5461 for (i
= 0; i
< n_switches
; i
++)
5462 if (!strncmp (switches
[i
].part1
, atom
, len
)
5463 && (starred
|| switches
[i
].part1
[len
] == '\0')
5464 && check_live_switch (i
, plen
))
5465 switches
[i
].ordering
= 1;
5468 /* Inline subroutine of handle_braces. Process all the currently
5469 marked switches through give_switch, and clear the marks. */
5471 process_marked_switches (void)
5475 for (i
= 0; i
< n_switches
; i
++)
5476 if (switches
[i
].ordering
== 1)
5478 switches
[i
].ordering
= 0;
5483 /* Handle a %{ ... } construct. P points just inside the leading {.
5484 Returns a pointer one past the end of the brace block, or 0
5485 if we call do_spec_1 and that returns -1. */
5488 handle_braces (const char *p
)
5490 const char *atom
, *end_atom
;
5491 const char *d_atom
= NULL
, *d_end_atom
= NULL
;
5492 const char *orig
= p
;
5500 bool a_must_be_last
= false;
5501 bool ordered_set
= false;
5502 bool disjunct_set
= false;
5503 bool disj_matched
= false;
5504 bool disj_starred
= true;
5505 bool n_way_choice
= false;
5506 bool n_way_matched
= false;
5508 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
5515 /* Scan one "atom" (S in the description above of %{}, possibly
5516 with '!', '.', '@', ',', or '*' modifiers). */
5518 a_is_suffix
= false;
5519 a_is_starred
= false;
5520 a_is_negated
= false;
5521 a_is_spectype
= false;
5525 p
++, a_is_negated
= true;
5529 p
++, a_is_suffix
= true;
5531 p
++, a_is_spectype
= true;
5534 while (ISIDNUM(*p
) || *p
== '-' || *p
== '+' || *p
== '='
5535 || *p
== ',' || *p
== '.' || *p
== '@')
5540 p
++, a_is_starred
= 1;
5546 /* Substitute the switch(es) indicated by the current atom. */
5548 if (disjunct_set
|| n_way_choice
|| a_is_negated
|| a_is_suffix
5549 || a_is_spectype
|| atom
== end_atom
)
5552 mark_matching_switches (atom
, end_atom
, a_is_starred
);
5555 process_marked_switches ();
5559 /* Substitute some text if the current atom appears as a switch
5561 disjunct_set
= true;
5565 if (atom
== end_atom
)
5567 if (!n_way_choice
|| disj_matched
|| *p
== '|'
5568 || a_is_negated
|| a_is_suffix
|| a_is_spectype
5572 /* An empty term may appear as the last choice of an
5573 N-way choice set; it means "otherwise". */
5574 a_must_be_last
= true;
5575 disj_matched
= !n_way_matched
;
5576 disj_starred
= false;
5580 if ((a_is_suffix
|| a_is_spectype
) && a_is_starred
)
5584 disj_starred
= false;
5586 /* Don't bother testing this atom if we already have a
5588 if (!disj_matched
&& !n_way_matched
)
5591 a_matched
= input_suffix_matches (atom
, end_atom
);
5592 else if (a_is_spectype
)
5593 a_matched
= input_spec_matches (atom
, end_atom
);
5595 a_matched
= switch_matches (atom
, end_atom
, a_is_starred
);
5597 if (a_matched
!= a_is_negated
)
5599 disj_matched
= true;
5601 d_end_atom
= end_atom
;
5608 /* Found the body, that is, the text to substitute if the
5609 current disjunction matches. */
5610 p
= process_brace_body (p
+ 1, d_atom
, d_end_atom
, disj_starred
,
5611 disj_matched
&& !n_way_matched
);
5615 /* If we have an N-way choice, reset state for the next
5619 n_way_choice
= true;
5620 n_way_matched
|= disj_matched
;
5621 disj_matched
= false;
5622 disj_starred
= true;
5623 d_atom
= d_end_atom
= NULL
;
5632 while (*p
++ != '}');
5637 fatal_error ("braced spec %qs is invalid at %qc", orig
, *p
);
5642 /* Subroutine of handle_braces. Scan and process a brace substitution body
5643 (X in the description of %{} syntax). P points one past the colon;
5644 ATOM and END_ATOM bracket the first atom which was found to be true
5645 (present) in the current disjunction; STARRED indicates whether all
5646 the atoms in the current disjunction were starred (for syntax validation);
5647 MATCHED indicates whether the disjunction matched or not, and therefore
5648 whether or not the body is to be processed through do_spec_1 or just
5649 skipped. Returns a pointer to the closing } or ;, or 0 if do_spec_1
5653 process_brace_body (const char *p
, const char *atom
, const char *end_atom
,
5654 int starred
, int matched
)
5656 const char *body
, *end_body
;
5657 unsigned int nesting_level
;
5658 bool have_subst
= false;
5660 /* Locate the closing } or ;, honoring nested braces.
5661 Trim trailing whitespace. */
5670 if (!--nesting_level
)
5673 else if (*p
== ';' && nesting_level
== 1)
5675 else if (*p
== '%' && p
[1] == '*' && nesting_level
== 1)
5677 else if (*p
== '\0')
5683 while (end_body
[-1] == ' ' || end_body
[-1] == '\t')
5686 if (have_subst
&& !starred
)
5691 /* Copy the substitution body to permanent storage and execute it.
5692 If have_subst is false, this is a simple matter of running the
5693 body through do_spec_1... */
5694 char *string
= save_string (body
, end_body
- body
);
5697 if (do_spec_1 (string
, 0, NULL
) < 0)
5702 /* ... but if have_subst is true, we have to process the
5703 body once for each matching switch, with %* set to the
5704 variant part of the switch. */
5705 unsigned int hard_match_len
= end_atom
- atom
;
5708 for (i
= 0; i
< n_switches
; i
++)
5709 if (!strncmp (switches
[i
].part1
, atom
, hard_match_len
)
5710 && check_live_switch (i
, hard_match_len
))
5712 if (do_spec_1 (string
, 0,
5713 &switches
[i
].part1
[hard_match_len
]) < 0)
5715 /* Pass any arguments this switch has. */
5717 suffix_subst
= NULL
;
5725 fatal_error ("braced spec body %qs is invalid", body
);
5728 /* Return 0 iff switch number SWITCHNUM is obsoleted by a later switch
5729 on the command line. PREFIX_LENGTH is the length of XXX in an {XXX*}
5730 spec, or -1 if either exact match or %* is used.
5732 A -O switch is obsoleted by a later -O switch. A -f, -m, or -W switch
5733 whose value does not begin with "no-" is obsoleted by the same value
5734 with the "no-", similarly for a switch with the "no-" prefix. */
5737 check_live_switch (int switchnum
, int prefix_length
)
5739 const char *name
= switches
[switchnum
].part1
;
5742 /* If we already processed this switch and determined if it was
5743 live or not, return our past determination. */
5744 if (switches
[switchnum
].live_cond
!= 0)
5745 return ((switches
[switchnum
].live_cond
& SWITCH_LIVE
) != 0
5746 && (switches
[switchnum
].live_cond
& SWITCH_FALSE
) == 0
5747 && (switches
[switchnum
].live_cond
& SWITCH_IGNORE_PERMANENTLY
)
5750 /* In the common case of {<at-most-one-letter>*}, a negating
5751 switch would always match, so ignore that case. We will just
5752 send the conflicting switches to the compiler phase. */
5753 if (prefix_length
>= 0 && prefix_length
<= 1)
5756 /* Now search for duplicate in a manner that depends on the name. */
5760 for (i
= switchnum
+ 1; i
< n_switches
; i
++)
5761 if (switches
[i
].part1
[0] == 'O')
5763 switches
[switchnum
].validated
= 1;
5764 switches
[switchnum
].live_cond
= SWITCH_FALSE
;
5769 case 'W': case 'f': case 'm':
5770 if (! strncmp (name
+ 1, "no-", 3))
5772 /* We have Xno-YYY, search for XYYY. */
5773 for (i
= switchnum
+ 1; i
< n_switches
; i
++)
5774 if (switches
[i
].part1
[0] == name
[0]
5775 && ! strcmp (&switches
[i
].part1
[1], &name
[4]))
5777 switches
[switchnum
].validated
= 1;
5778 switches
[switchnum
].live_cond
= SWITCH_FALSE
;
5784 /* We have XYYY, search for Xno-YYY. */
5785 for (i
= switchnum
+ 1; i
< n_switches
; i
++)
5786 if (switches
[i
].part1
[0] == name
[0]
5787 && switches
[i
].part1
[1] == 'n'
5788 && switches
[i
].part1
[2] == 'o'
5789 && switches
[i
].part1
[3] == '-'
5790 && !strcmp (&switches
[i
].part1
[4], &name
[1]))
5792 switches
[switchnum
].validated
= 1;
5793 switches
[switchnum
].live_cond
= SWITCH_FALSE
;
5800 /* Otherwise the switch is live. */
5801 switches
[switchnum
].live_cond
|= SWITCH_LIVE
;
5805 /* Pass a switch to the current accumulating command
5806 in the same form that we received it.
5807 SWITCHNUM identifies the switch; it is an index into
5808 the vector of switches gcc received, which is `switches'.
5809 This cannot fail since it never finishes a command line.
5811 If OMIT_FIRST_WORD is nonzero, then we omit .part1 of the argument. */
5814 give_switch (int switchnum
, int omit_first_word
)
5816 if ((switches
[switchnum
].live_cond
& SWITCH_IGNORE
) != 0)
5819 if (!omit_first_word
)
5821 do_spec_1 ("-", 0, NULL
);
5822 do_spec_1 (switches
[switchnum
].part1
, 1, NULL
);
5825 if (switches
[switchnum
].args
!= 0)
5828 for (p
= switches
[switchnum
].args
; *p
; p
++)
5830 const char *arg
= *p
;
5832 do_spec_1 (" ", 0, NULL
);
5835 unsigned length
= strlen (arg
);
5838 while (length
-- && !IS_DIR_SEPARATOR (arg
[length
]))
5839 if (arg
[length
] == '.')
5841 (CONST_CAST(char *, arg
))[length
] = 0;
5845 do_spec_1 (arg
, 1, NULL
);
5847 (CONST_CAST(char *, arg
))[length
] = '.';
5848 do_spec_1 (suffix_subst
, 1, NULL
);
5851 do_spec_1 (arg
, 1, NULL
);
5855 do_spec_1 (" ", 0, NULL
);
5856 switches
[switchnum
].validated
= 1;
5859 /* Search for a file named NAME trying various prefixes including the
5860 user's -B prefix and some standard ones.
5861 Return the absolute file name found. If nothing is found, return NAME. */
5864 find_file (const char *name
)
5866 char *newname
= find_a_file (&startfile_prefixes
, name
, R_OK
, true);
5867 return newname
? newname
: name
;
5870 /* Determine whether a directory exists. If LINKER, return 0 for
5871 certain fixed names not needed by the linker. */
5874 is_directory (const char *path1
, bool linker
)
5881 /* Ensure the string ends with "/.". The resulting path will be a
5882 directory even if the given path is a symbolic link. */
5883 len1
= strlen (path1
);
5884 path
= (char *) alloca (3 + len1
);
5885 memcpy (path
, path1
, len1
);
5887 if (!IS_DIR_SEPARATOR (cp
[-1]))
5888 *cp
++ = DIR_SEPARATOR
;
5892 /* Exclude directories that the linker is known to search. */
5894 && IS_DIR_SEPARATOR (path
[0])
5896 && strncmp (path
+ 1, "lib", 3) == 0)
5898 && strncmp (path
+ 1, "usr", 3) == 0
5899 && IS_DIR_SEPARATOR (path
[4])
5900 && strncmp (path
+ 5, "lib", 3) == 0)))
5903 return (stat (path
, &st
) >= 0 && S_ISDIR (st
.st_mode
));
5906 /* Set up the various global variables to indicate that we're processing
5907 the input file named FILENAME. */
5910 set_input (const char *filename
)
5914 gcc_input_filename
= filename
;
5915 input_filename_length
= strlen (gcc_input_filename
);
5916 input_basename
= lbasename (gcc_input_filename
);
5918 /* Find a suffix starting with the last period,
5919 and set basename_length to exclude that suffix. */
5920 basename_length
= strlen (input_basename
);
5921 suffixed_basename_length
= basename_length
;
5922 p
= input_basename
+ basename_length
;
5923 while (p
!= input_basename
&& *p
!= '.')
5925 if (*p
== '.' && p
!= input_basename
)
5927 basename_length
= p
- input_basename
;
5928 input_suffix
= p
+ 1;
5933 /* If a spec for 'g', 'u', or 'U' is seen with -save-temps then
5934 we will need to do a stat on the gcc_input_filename. The
5935 INPUT_STAT_SET signals that the stat is needed. */
5939 /* On fatal signals, delete all the temporary files. */
5942 fatal_signal (int signum
)
5944 signal (signum
, SIG_DFL
);
5945 delete_failure_queue ();
5946 delete_temp_files ();
5947 /* Get the same signal again, this time not handled,
5948 so its normal effect occurs. */
5949 kill (getpid (), signum
);
5952 /* Compare the contents of the two files named CMPFILE[0] and
5953 CMPFILE[1]. Return zero if they're identical, nonzero
5957 compare_files (char *cmpfile
[])
5960 FILE *temp
[2] = { NULL
, NULL
};
5966 void *map
[2] = { NULL
, NULL
};
5968 for (i
= 0; i
< 2; i
++)
5972 if (stat (cmpfile
[i
], &st
) < 0 || !S_ISREG (st
.st_mode
))
5974 error ("%s: could not determine length of compare-debug file %s",
5975 gcc_input_filename
, cmpfile
[i
]);
5980 length
[i
] = st
.st_size
;
5983 if (!ret
&& length
[0] != length
[1])
5985 error ("%s: -fcompare-debug failure (length)", gcc_input_filename
);
5990 for (i
= 0; i
< 2; i
++)
5992 int fd
= open (cmpfile
[i
], O_RDONLY
);
5995 error ("%s: could not open compare-debug file %s",
5996 gcc_input_filename
, cmpfile
[i
]);
6001 map
[i
] = mmap (NULL
, length
[i
], PROT_READ
, MAP_PRIVATE
, fd
, 0);
6004 if (map
[i
] == (void *) MAP_FAILED
)
6013 if (memcmp (map
[0], map
[1], length
[0]) != 0)
6015 error ("%s: -fcompare-debug failure", gcc_input_filename
);
6020 for (i
= 0; i
< 2; i
++)
6022 munmap ((caddr_t
) map
[i
], length
[i
]);
6031 for (i
= 0; i
< 2; i
++)
6033 temp
[i
] = fopen (cmpfile
[i
], "r");
6036 error ("%s: could not open compare-debug file %s",
6037 gcc_input_filename
, cmpfile
[i
]);
6043 if (!ret
&& temp
[0] && temp
[1])
6047 c0
= fgetc (temp
[0]);
6048 c1
= fgetc (temp
[1]);
6052 error ("%s: -fcompare-debug failure",
6053 gcc_input_filename
);
6062 for (i
= 1; i
>= 0; i
--)
6071 extern int main (int, char **);
6074 main (int argc
, char **argv
)
6078 int linker_was_run
= 0;
6079 int lang_n_infiles
= 0;
6080 int num_linker_inputs
= 0;
6081 char *explicit_link_files
;
6083 char *lto_wrapper_file
;
6085 struct user_specs
*uptr
;
6086 char **old_argv
= argv
;
6087 struct cl_decoded_option
*decoded_options
;
6088 unsigned int decoded_options_count
;
6090 /* Initialize here, not in definition. The IRIX 6 O32 cc sometimes chokes
6091 on ?: in file-scope variable initializations. */
6092 asm_debug
= ASM_DEBUG_SPEC
;
6094 p
= argv
[0] + strlen (argv
[0]);
6095 while (p
!= argv
[0] && !IS_DIR_SEPARATOR (p
[-1]))
6099 xmalloc_set_program_name (progname
);
6101 expandargv (&argc
, &argv
);
6103 /* Determine if any expansions were made. */
6104 if (argv
!= old_argv
)
6105 at_file_supplied
= true;
6107 global_options
= global_options_init
;
6109 decode_cmdline_options_to_array (argc
, CONST_CAST2 (const char **, char **,
6112 &decoded_options
, &decoded_options_count
);
6114 #ifdef GCC_DRIVER_HOST_INITIALIZATION
6115 /* Perform host dependent initialization when needed. */
6116 GCC_DRIVER_HOST_INITIALIZATION
;
6119 /* Unlock the stdio streams. */
6120 unlock_std_streams ();
6122 gcc_init_libintl ();
6124 diagnostic_initialize (global_dc
, 0);
6125 if (atexit (delete_temp_files
) != 0)
6126 fatal_error ("atexit failed");
6128 if (signal (SIGINT
, SIG_IGN
) != SIG_IGN
)
6129 signal (SIGINT
, fatal_signal
);
6131 if (signal (SIGHUP
, SIG_IGN
) != SIG_IGN
)
6132 signal (SIGHUP
, fatal_signal
);
6134 if (signal (SIGTERM
, SIG_IGN
) != SIG_IGN
)
6135 signal (SIGTERM
, fatal_signal
);
6137 if (signal (SIGPIPE
, SIG_IGN
) != SIG_IGN
)
6138 signal (SIGPIPE
, fatal_signal
);
6141 /* We *MUST* set SIGCHLD to SIG_DFL so that the wait4() call will
6142 receive the signal. A different setting is inheritable */
6143 signal (SIGCHLD
, SIG_DFL
);
6146 /* Allocate the argument vector. */
6149 obstack_init (&obstack
);
6151 /* Build multilib_select, et. al from the separate lines that make up each
6152 multilib selection. */
6154 const char *const *q
= multilib_raw
;
6157 obstack_init (&multilib_obstack
);
6158 while ((p
= *q
++) != (char *) 0)
6159 obstack_grow (&multilib_obstack
, p
, strlen (p
));
6161 obstack_1grow (&multilib_obstack
, 0);
6162 multilib_select
= XOBFINISH (&multilib_obstack
, const char *);
6164 q
= multilib_matches_raw
;
6165 while ((p
= *q
++) != (char *) 0)
6166 obstack_grow (&multilib_obstack
, p
, strlen (p
));
6168 obstack_1grow (&multilib_obstack
, 0);
6169 multilib_matches
= XOBFINISH (&multilib_obstack
, const char *);
6171 q
= multilib_exclusions_raw
;
6172 while ((p
= *q
++) != (char *) 0)
6173 obstack_grow (&multilib_obstack
, p
, strlen (p
));
6175 obstack_1grow (&multilib_obstack
, 0);
6176 multilib_exclusions
= XOBFINISH (&multilib_obstack
, const char *);
6179 for (i
= 0; i
< ARRAY_SIZE (multilib_defaults_raw
); i
++)
6182 obstack_1grow (&multilib_obstack
, ' ');
6183 obstack_grow (&multilib_obstack
,
6184 multilib_defaults_raw
[i
],
6185 strlen (multilib_defaults_raw
[i
]));
6189 obstack_1grow (&multilib_obstack
, 0);
6190 multilib_defaults
= XOBFINISH (&multilib_obstack
, const char *);
6193 #ifdef INIT_ENVIRONMENT
6194 /* Set up any other necessary machine specific environment variables. */
6195 xputenv (INIT_ENVIRONMENT
);
6198 /* Make a table of what switches there are (switches, n_switches).
6199 Make a table of specified input files (infiles, n_infiles).
6200 Decode switches that are handled locally. */
6202 process_command (decoded_options_count
, decoded_options
);
6204 /* Initialize the vector of specs to just the default.
6205 This means one element containing 0s, as a terminator. */
6207 compilers
= XNEWVAR (struct compiler
, sizeof default_compilers
);
6208 memcpy (compilers
, default_compilers
, sizeof default_compilers
);
6209 n_compilers
= n_default_compilers
;
6211 /* Read specs from a file if there is one. */
6213 machine_suffix
= concat (spec_machine
, dir_separator_str
,
6214 spec_version
, dir_separator_str
, NULL
);
6215 just_machine_suffix
= concat (spec_machine
, dir_separator_str
, NULL
);
6217 specs_file
= find_a_file (&startfile_prefixes
, "specs", R_OK
, true);
6218 /* Read the specs file unless it is a default one. */
6219 if (specs_file
!= 0 && strcmp (specs_file
, "specs"))
6220 read_specs (specs_file
, TRUE
);
6224 /* We need to check standard_exec_prefix/just_machine_suffix/specs
6225 for any override of as, ld and libraries. */
6226 specs_file
= (char *) alloca (strlen (standard_exec_prefix
)
6227 + strlen (just_machine_suffix
) + sizeof ("specs"));
6229 strcpy (specs_file
, standard_exec_prefix
);
6230 strcat (specs_file
, just_machine_suffix
);
6231 strcat (specs_file
, "specs");
6232 if (access (specs_file
, R_OK
) == 0)
6233 read_specs (specs_file
, TRUE
);
6235 /* Process any configure-time defaults specified for the command line
6236 options, via OPTION_DEFAULT_SPECS. */
6237 for (i
= 0; i
< ARRAY_SIZE (option_default_specs
); i
++)
6238 do_option_spec (option_default_specs
[i
].name
,
6239 option_default_specs
[i
].spec
);
6241 /* Process DRIVER_SELF_SPECS, adding any new options to the end
6242 of the command line. */
6244 for (i
= 0; i
< ARRAY_SIZE (driver_self_specs
); i
++)
6245 do_self_spec (driver_self_specs
[i
]);
6249 enum save_temps save
;
6251 if (!compare_debug_second
)
6253 n_switches_debug_check
[1] = n_switches
;
6254 n_switches_alloc_debug_check
[1] = n_switches_alloc
;
6255 switches_debug_check
[1] = XDUPVEC (struct switchstr
, switches
,
6258 do_self_spec ("%:compare-debug-self-opt()");
6259 n_switches_debug_check
[0] = n_switches
;
6260 n_switches_alloc_debug_check
[0] = n_switches_alloc
;
6261 switches_debug_check
[0] = switches
;
6263 n_switches
= n_switches_debug_check
[1];
6264 n_switches_alloc
= n_switches_alloc_debug_check
[1];
6265 switches
= switches_debug_check
[1];
6268 /* Avoid crash when computing %j in this early. */
6269 save
= save_temps_flag
;
6270 save_temps_flag
= SAVE_TEMPS_NONE
;
6272 compare_debug
= -compare_debug
;
6273 do_self_spec ("%:compare-debug-self-opt()");
6275 save_temps_flag
= save
;
6277 if (!compare_debug_second
)
6279 n_switches_debug_check
[1] = n_switches
;
6280 n_switches_alloc_debug_check
[1] = n_switches_alloc
;
6281 switches_debug_check
[1] = switches
;
6282 compare_debug
= -compare_debug
;
6283 n_switches
= n_switches_debug_check
[0];
6284 n_switches_alloc
= n_switches_debug_check
[0];
6285 switches
= switches_debug_check
[0];
6289 /* If not cross-compiling, look for executables in the standard
6291 if (*cross_compile
== '0')
6293 if (*md_exec_prefix
)
6295 add_prefix (&exec_prefixes
, md_exec_prefix
, "GCC",
6296 PREFIX_PRIORITY_LAST
, 0, 0);
6300 /* Process sysroot_suffix_spec. */
6301 if (*sysroot_suffix_spec
!= 0
6302 && do_spec_2 (sysroot_suffix_spec
) == 0)
6304 if (VEC_length (const_char_p
, argbuf
) > 1)
6305 error ("spec failure: more than one arg to SYSROOT_SUFFIX_SPEC");
6306 else if (VEC_length (const_char_p
, argbuf
) == 1)
6307 target_sysroot_suffix
= xstrdup (VEC_last (const_char_p
, argbuf
));
6310 #ifdef HAVE_LD_SYSROOT
6311 /* Pass the --sysroot option to the linker, if it supports that. If
6312 there is a sysroot_suffix_spec, it has already been processed by
6313 this point, so target_system_root really is the system root we
6315 if (target_system_root
)
6317 obstack_grow (&obstack
, "%(sysroot_spec) ", strlen ("%(sysroot_spec) "));
6318 obstack_grow0 (&obstack
, link_spec
, strlen (link_spec
));
6319 set_spec ("link", XOBFINISH (&obstack
, const char *));
6323 /* Process sysroot_hdrs_suffix_spec. */
6324 if (*sysroot_hdrs_suffix_spec
!= 0
6325 && do_spec_2 (sysroot_hdrs_suffix_spec
) == 0)
6327 if (VEC_length (const_char_p
, argbuf
) > 1)
6328 error ("spec failure: more than one arg to SYSROOT_HEADERS_SUFFIX_SPEC");
6329 else if (VEC_length (const_char_p
, argbuf
) == 1)
6330 target_sysroot_hdrs_suffix
= xstrdup (VEC_last (const_char_p
, argbuf
));
6333 /* Look for startfiles in the standard places. */
6334 if (*startfile_prefix_spec
!= 0
6335 && do_spec_2 (startfile_prefix_spec
) == 0
6336 && do_spec_1 (" ", 0, NULL
) == 0)
6340 FOR_EACH_VEC_ELT (const_char_p
, argbuf
, ndx
, arg
)
6341 add_sysrooted_prefix (&startfile_prefixes
, arg
, "BINUTILS",
6342 PREFIX_PRIORITY_LAST
, 0, 1);
6344 /* We should eventually get rid of all these and stick to
6345 startfile_prefix_spec exclusively. */
6346 else if (*cross_compile
== '0' || target_system_root
)
6348 if (*md_startfile_prefix
)
6349 add_sysrooted_prefix (&startfile_prefixes
, md_startfile_prefix
,
6350 "GCC", PREFIX_PRIORITY_LAST
, 0, 1);
6352 if (*md_startfile_prefix_1
)
6353 add_sysrooted_prefix (&startfile_prefixes
, md_startfile_prefix_1
,
6354 "GCC", PREFIX_PRIORITY_LAST
, 0, 1);
6356 /* If standard_startfile_prefix is relative, base it on
6357 standard_exec_prefix. This lets us move the installed tree
6358 as a unit. If GCC_EXEC_PREFIX is defined, base
6359 standard_startfile_prefix on that as well.
6361 If the prefix is relative, only search it for native compilers;
6362 otherwise we will search a directory containing host libraries. */
6363 if (IS_ABSOLUTE_PATH (standard_startfile_prefix
))
6364 add_sysrooted_prefix (&startfile_prefixes
,
6365 standard_startfile_prefix
, "BINUTILS",
6366 PREFIX_PRIORITY_LAST
, 0, 1);
6367 else if (*cross_compile
== '0')
6369 add_prefix (&startfile_prefixes
,
6370 concat (gcc_exec_prefix
6371 ? gcc_exec_prefix
: standard_exec_prefix
,
6373 standard_startfile_prefix
, NULL
),
6374 NULL
, PREFIX_PRIORITY_LAST
, 0, 1);
6377 /* Sysrooted prefixes are relocated because target_system_root is
6378 also relocated by gcc_exec_prefix. */
6379 if (*standard_startfile_prefix_1
)
6380 add_sysrooted_prefix (&startfile_prefixes
,
6381 standard_startfile_prefix_1
, "BINUTILS",
6382 PREFIX_PRIORITY_LAST
, 0, 1);
6383 if (*standard_startfile_prefix_2
)
6384 add_sysrooted_prefix (&startfile_prefixes
,
6385 standard_startfile_prefix_2
, "BINUTILS",
6386 PREFIX_PRIORITY_LAST
, 0, 1);
6389 /* Process any user specified specs in the order given on the command
6391 for (uptr
= user_specs_head
; uptr
; uptr
= uptr
->next
)
6393 char *filename
= find_a_file (&startfile_prefixes
, uptr
->filename
,
6395 read_specs (filename
? filename
: uptr
->filename
, FALSE
);
6398 /* If we have a GCC_EXEC_PREFIX envvar, modify it for cpp's sake. */
6399 if (gcc_exec_prefix
)
6400 gcc_exec_prefix
= concat (gcc_exec_prefix
, spec_machine
, dir_separator_str
,
6401 spec_version
, dir_separator_str
, NULL
);
6403 /* Now we have the specs.
6404 Set the `valid' bits for switches that match anything in any spec. */
6406 validate_all_switches ();
6408 /* Now that we have the switches and the specs, set
6409 the subdirectory based on the options. */
6410 set_multilib_dir ();
6412 /* Set up to remember the pathname of gcc and any options
6413 needed for collect. We use argv[0] instead of progname because
6414 we need the complete pathname. */
6415 obstack_init (&collect_obstack
);
6416 obstack_grow (&collect_obstack
, "COLLECT_GCC=", sizeof ("COLLECT_GCC=") - 1);
6417 obstack_grow (&collect_obstack
, argv
[0], strlen (argv
[0]) + 1);
6418 xputenv (XOBFINISH (&collect_obstack
, char *));
6420 /* Set up to remember the pathname of the lto wrapper. */
6422 lto_wrapper_file
= find_a_file (&exec_prefixes
, "lto-wrapper", X_OK
, false);
6423 if (lto_wrapper_file
)
6425 lto_wrapper_spec
= lto_wrapper_file
;
6426 obstack_init (&collect_obstack
);
6427 obstack_grow (&collect_obstack
, "COLLECT_LTO_WRAPPER=",
6428 sizeof ("COLLECT_LTO_WRAPPER=") - 1);
6429 obstack_grow (&collect_obstack
, lto_wrapper_spec
,
6430 strlen (lto_wrapper_spec
) + 1);
6431 xputenv (XOBFINISH (&collect_obstack
, char *));
6434 /* Warn about any switches that no pass was interested in. */
6436 for (i
= 0; (int) i
< n_switches
; i
++)
6437 if (! switches
[i
].validated
)
6438 error ("unrecognized option %<-%s%>", switches
[i
].part1
);
6440 /* Obey some of the options. */
6442 if (print_search_dirs
)
6444 printf (_("install: %s%s\n"),
6445 gcc_exec_prefix
? gcc_exec_prefix
: standard_exec_prefix
,
6446 gcc_exec_prefix
? "" : machine_suffix
);
6447 printf (_("programs: %s\n"),
6448 build_search_list (&exec_prefixes
, "", false, false));
6449 printf (_("libraries: %s\n"),
6450 build_search_list (&startfile_prefixes
, "", false, true));
6454 if (print_file_name
)
6456 printf ("%s\n", find_file (print_file_name
));
6460 if (print_prog_name
)
6462 char *newname
= find_a_file (&exec_prefixes
, print_prog_name
, X_OK
, 0);
6463 printf ("%s\n", (newname
? newname
: print_prog_name
));
6467 if (print_multi_lib
)
6469 print_multilib_info ();
6473 if (print_multi_directory
)
6475 if (multilib_dir
== NULL
)
6478 printf ("%s\n", multilib_dir
);
6484 if (target_system_root
)
6486 if (target_sysroot_suffix
)
6487 printf ("%s%s\n", target_system_root
, target_sysroot_suffix
);
6489 printf ("%s\n", target_system_root
);
6494 if (print_multi_os_directory
)
6496 if (multilib_os_dir
== NULL
)
6499 printf ("%s\n", multilib_os_dir
);
6503 if (print_sysroot_headers_suffix
)
6505 if (*sysroot_hdrs_suffix_spec
)
6507 printf("%s\n", (target_sysroot_hdrs_suffix
6508 ? target_sysroot_hdrs_suffix
6513 /* The error status indicates that only one set of fixed
6514 headers should be built. */
6515 fatal_error ("not configured with sysroot headers suffix");
6518 if (print_help_list
)
6524 printf (_("\nFor bug reporting instructions, please see:\n"));
6525 printf ("%s.\n", bug_report_url
);
6530 /* We do not exit here. Instead we have created a fake input file
6531 called 'help-dummy' which needs to be compiled, and we pass this
6532 on the various sub-processes, along with the --help switch.
6533 Ensure their output appears after ours. */
6534 fputc ('\n', stdout
);
6540 printf (_("%s %s%s\n"), progname
, pkgversion_string
,
6542 printf ("Copyright %s 2011 Free Software Foundation, Inc.\n",
6544 fputs (_("This is free software; see the source for copying conditions. There is NO\n\
6545 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\n"),
6550 /* We do not exit here. We use the same mechanism of --help to print
6551 the version of the sub-processes. */
6552 fputc ('\n', stdout
);
6561 fnotice (stderr
, "Target: %s\n", spec_machine
);
6562 fnotice (stderr
, "Configured with: %s\n", configuration_arguments
);
6564 #ifdef THREAD_MODEL_SPEC
6565 /* We could have defined THREAD_MODEL_SPEC to "%*" by default,
6566 but there's no point in doing all this processing just to get
6567 thread_model back. */
6568 obstack_init (&obstack
);
6569 do_spec_1 (THREAD_MODEL_SPEC
, 0, thread_model
);
6570 obstack_1grow (&obstack
, '\0');
6571 thrmod
= XOBFINISH (&obstack
, const char *);
6573 thrmod
= thread_model
;
6576 fnotice (stderr
, "Thread model: %s\n", thrmod
);
6578 /* compiler_version is truncated at the first space when initialized
6579 from version string, so truncate version_string at the first space
6580 before comparing. */
6581 for (n
= 0; version_string
[n
]; n
++)
6582 if (version_string
[n
] == ' ')
6585 if (! strncmp (version_string
, compiler_version
, n
)
6586 && compiler_version
[n
] == 0)
6587 fnotice (stderr
, "gcc version %s %s\n", version_string
,
6590 fnotice (stderr
, "gcc driver version %s %sexecuting gcc version %s\n",
6591 version_string
, pkgversion_string
, compiler_version
);
6597 if (n_infiles
== added_libraries
)
6598 fatal_error ("no input files");
6600 /* Make a place to record the compiler output file names
6601 that correspond to the input files. */
6604 i
+= lang_specific_extra_outfiles
;
6605 outfiles
= XCNEWVEC (const char *, i
);
6607 /* Record which files were specified explicitly as link input. */
6609 explicit_link_files
= XCNEWVEC (char, n_infiles
);
6611 combine_inputs
= have_o
|| flag_wpa
;
6613 for (i
= 0; (int) i
< n_infiles
; i
++)
6615 const char *name
= infiles
[i
].name
;
6616 struct compiler
*compiler
= lookup_compiler (name
,
6618 infiles
[i
].language
);
6620 if (compiler
&& !(compiler
->combinable
))
6621 combine_inputs
= false;
6623 if (lang_n_infiles
> 0 && compiler
!= input_file_compiler
6624 && infiles
[i
].language
&& infiles
[i
].language
[0] != '*')
6625 infiles
[i
].incompiler
= compiler
;
6629 input_file_compiler
= compiler
;
6630 infiles
[i
].incompiler
= compiler
;
6634 /* Since there is no compiler for this input file, assume it is a
6636 explicit_link_files
[i
] = 1;
6637 infiles
[i
].incompiler
= NULL
;
6639 infiles
[i
].compiled
= false;
6640 infiles
[i
].preprocessed
= false;
6643 if (!combine_inputs
&& have_c
&& have_o
&& lang_n_infiles
> 1)
6644 fatal_error ("cannot specify -o with -c, -S or -E with multiple files");
6646 for (i
= 0; (int) i
< n_infiles
; i
++)
6648 int this_file_error
= 0;
6650 /* Tell do_spec what to substitute for %i. */
6652 input_file_number
= i
;
6653 set_input (infiles
[i
].name
);
6655 if (infiles
[i
].compiled
)
6658 /* Use the same thing in %o, unless cp->spec says otherwise. */
6660 outfiles
[i
] = gcc_input_filename
;
6662 /* Figure out which compiler from the file's suffix. */
6665 = lookup_compiler (infiles
[i
].name
, input_filename_length
,
6666 infiles
[i
].language
);
6668 if (input_file_compiler
)
6670 /* Ok, we found an applicable compiler. Run its spec. */
6672 if (input_file_compiler
->spec
[0] == '#')
6674 error ("%s: %s compiler not installed on this system",
6675 gcc_input_filename
, &input_file_compiler
->spec
[1]);
6676 this_file_error
= 1;
6682 if (debug_check_temp_file
[0])
6683 free (debug_check_temp_file
[0]);
6684 debug_check_temp_file
[0] = NULL
;
6686 if (debug_check_temp_file
[1])
6687 free (debug_check_temp_file
[1]);
6688 debug_check_temp_file
[1] = NULL
;
6691 value
= do_spec (input_file_compiler
->spec
);
6692 infiles
[i
].compiled
= true;
6694 this_file_error
= 1;
6695 else if (compare_debug
&& debug_check_temp_file
[0])
6698 inform (0, "recompiling with -fcompare-debug");
6700 compare_debug
= -compare_debug
;
6701 n_switches
= n_switches_debug_check
[1];
6702 n_switches_alloc
= n_switches_alloc_debug_check
[1];
6703 switches
= switches_debug_check
[1];
6705 value
= do_spec (input_file_compiler
->spec
);
6707 compare_debug
= -compare_debug
;
6708 n_switches
= n_switches_debug_check
[0];
6709 n_switches_alloc
= n_switches_alloc_debug_check
[0];
6710 switches
= switches_debug_check
[0];
6714 error ("during -fcompare-debug recompilation");
6715 this_file_error
= 1;
6718 gcc_assert (debug_check_temp_file
[1]
6719 && strcmp (debug_check_temp_file
[0],
6720 debug_check_temp_file
[1]));
6723 inform (0, "comparing final insns dumps");
6725 if (compare_files (debug_check_temp_file
))
6726 this_file_error
= 1;
6731 if (debug_check_temp_file
[0])
6732 free (debug_check_temp_file
[0]);
6733 debug_check_temp_file
[0] = NULL
;
6735 if (debug_check_temp_file
[1])
6736 free (debug_check_temp_file
[1]);
6737 debug_check_temp_file
[1] = NULL
;
6742 /* If this file's name does not contain a recognized suffix,
6743 record it as explicit linker input. */
6746 explicit_link_files
[i
] = 1;
6748 /* Clear the delete-on-failure queue, deleting the files in it
6749 if this compilation failed. */
6751 if (this_file_error
)
6753 delete_failure_queue ();
6756 /* If this compilation succeeded, don't delete those files later. */
6757 clear_failure_queue ();
6760 /* Reset the input file name to the first compile/object file name, for use
6761 with %b in LINK_SPEC. We use the first input file that we can find
6762 a compiler to compile it instead of using infiles.language since for
6763 languages other than C we use aliases that we then lookup later. */
6768 for (i
= 0; i
< n_infiles
; i
++)
6769 if (infiles
[i
].incompiler
6770 || (infiles
[i
].language
&& infiles
[i
].language
[0] != '*'))
6772 set_input (infiles
[i
].name
);
6779 /* Make sure INPUT_FILE_NUMBER points to first available open
6781 input_file_number
= n_infiles
;
6782 if (lang_specific_pre_link ())
6786 /* Determine if there are any linker input files. */
6787 num_linker_inputs
= 0;
6788 for (i
= 0; (int) i
< n_infiles
; i
++)
6789 if (explicit_link_files
[i
] || outfiles
[i
] != NULL
)
6790 num_linker_inputs
++;
6792 /* Run ld to link all the compiler output files. */
6794 if (num_linker_inputs
> 0 && !seen_error () && print_subprocess_help
< 2)
6796 int tmp
= execution_count
;
6797 #ifdef HAVE_LTO_PLUGIN
6798 const char *fno_use_linker_plugin
= "fno-use-linker-plugin";
6800 const char *fuse_linker_plugin
= "fuse-linker-plugin";
6803 /* We'll use ld if we can't find collect2. */
6804 if (! strcmp (linker_name_spec
, "collect2"))
6806 char *s
= find_a_file (&exec_prefixes
, "collect2", X_OK
, false);
6808 linker_name_spec
= "ld";
6811 #ifdef HAVE_LTO_PLUGIN
6812 if (!switch_matches (fno_use_linker_plugin
,
6813 fno_use_linker_plugin
+ strlen (fno_use_linker_plugin
), 0))
6815 if (switch_matches (fuse_linker_plugin
,
6816 fuse_linker_plugin
+ strlen (fuse_linker_plugin
), 0))
6819 linker_plugin_file_spec
= find_a_file (&exec_prefixes
,
6820 LTOPLUGINSONAME
, R_OK
,
6822 if (!linker_plugin_file_spec
)
6823 fatal_error ("-fuse-linker-plugin, but " LTOPLUGINSONAME
" not found");
6825 lto_gcc_spec
= argv
[0];
6827 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
6829 putenv_from_prefixes (&exec_prefixes
, "COMPILER_PATH", false);
6830 putenv_from_prefixes (&startfile_prefixes
, LIBRARY_PATH_ENV
, true);
6832 if (print_subprocess_help
== 1)
6834 printf (_("\nLinker options\n==============\n\n"));
6835 printf (_("Use \"-Wl,OPTION\" to pass \"OPTION\""
6836 " to the linker.\n\n"));
6839 value
= do_spec (link_command_spec
);
6842 linker_was_run
= (tmp
!= execution_count
);
6845 /* If options said don't run linker,
6846 complain about input files to be given to the linker. */
6848 if (! linker_was_run
&& !seen_error ())
6849 for (i
= 0; (int) i
< n_infiles
; i
++)
6850 if (explicit_link_files
[i
]
6851 && !(infiles
[i
].language
&& infiles
[i
].language
[0] == '*'))
6852 warning (0, "%s: linker input file unused because linking not done",
6855 /* Delete some or all of the temporary files we made. */
6858 delete_failure_queue ();
6859 delete_temp_files ();
6861 if (print_help_list
)
6863 printf (("\nFor bug reporting instructions, please see:\n"));
6864 printf ("%s\n", bug_report_url
);
6867 return (signal_count
!= 0 ? 2
6868 : seen_error () ? (pass_exit_codes
? greatest_status
: 1)
6872 /* Find the proper compilation spec for the file name NAME,
6873 whose length is LENGTH. LANGUAGE is the specified language,
6874 or 0 if this file is to be passed to the linker. */
6876 static struct compiler
*
6877 lookup_compiler (const char *name
, size_t length
, const char *language
)
6879 struct compiler
*cp
;
6881 /* If this was specified by the user to be a linker input, indicate that. */
6882 if (language
!= 0 && language
[0] == '*')
6885 /* Otherwise, look for the language, if one is spec'd. */
6888 for (cp
= compilers
+ n_compilers
- 1; cp
>= compilers
; cp
--)
6889 if (cp
->suffix
[0] == '@' && !strcmp (cp
->suffix
+ 1, language
))
6892 error ("language %s not recognized", language
);
6896 /* Look for a suffix. */
6897 for (cp
= compilers
+ n_compilers
- 1; cp
>= compilers
; cp
--)
6899 if (/* The suffix `-' matches only the file name `-'. */
6900 (!strcmp (cp
->suffix
, "-") && !strcmp (name
, "-"))
6901 || (strlen (cp
->suffix
) < length
6902 /* See if the suffix matches the end of NAME. */
6903 && !strcmp (cp
->suffix
,
6904 name
+ length
- strlen (cp
->suffix
))
6909 #if defined (OS2) ||defined (HAVE_DOS_BASED_FILE_SYSTEM)
6910 /* Look again, but case-insensitively this time. */
6912 for (cp
= compilers
+ n_compilers
- 1; cp
>= compilers
; cp
--)
6914 if (/* The suffix `-' matches only the file name `-'. */
6915 (!strcmp (cp
->suffix
, "-") && !strcmp (name
, "-"))
6916 || (strlen (cp
->suffix
) < length
6917 /* See if the suffix matches the end of NAME. */
6918 && ((!strcmp (cp
->suffix
,
6919 name
+ length
- strlen (cp
->suffix
))
6920 || !strpbrk (cp
->suffix
, "ABCDEFGHIJKLMNOPQRSTUVWXYZ"))
6921 && !strcasecmp (cp
->suffix
,
6922 name
+ length
- strlen (cp
->suffix
)))
6928 if (cp
>= compilers
)
6930 if (cp
->spec
[0] != '@')
6931 /* A non-alias entry: return it. */
6934 /* An alias entry maps a suffix to a language.
6935 Search for the language; pass 0 for NAME and LENGTH
6936 to avoid infinite recursion if language not found. */
6937 return lookup_compiler (NULL
, 0, cp
->spec
+ 1);
6943 save_string (const char *s
, int len
)
6945 char *result
= XNEWVEC (char, len
+ 1);
6947 memcpy (result
, s
, len
);
6953 pfatal_with_name (const char *name
)
6955 perror_with_name (name
);
6956 delete_temp_files ();
6961 perror_with_name (const char *name
)
6963 error ("%s: %m", name
);
6967 validate_switches_from_spec (const char *spec
)
6969 const char *p
= spec
;
6972 if (c
== '%' && (*p
== '{' || *p
== '<' || (*p
== 'W' && *++p
== '{')))
6973 /* We have a switch spec. */
6974 p
= validate_switches (p
+ 1);
6978 validate_all_switches (void)
6980 struct compiler
*comp
;
6981 struct spec_list
*spec
;
6983 for (comp
= compilers
; comp
->spec
; comp
++)
6984 validate_switches_from_spec (comp
->spec
);
6986 /* Look through the linked list of specs read from the specs file. */
6987 for (spec
= specs
; spec
; spec
= spec
->next
)
6988 validate_switches_from_spec (*spec
->ptr_spec
);
6990 validate_switches_from_spec (link_command_spec
);
6993 /* Look at the switch-name that comes after START
6994 and mark as valid all supplied switches that match it. */
6997 validate_switches (const char *start
)
6999 const char *p
= start
;
7003 bool suffix
= false;
7004 bool starred
= false;
7006 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
7015 if (*p
== '.' || *p
== ',')
7019 while (ISIDNUM (*p
) || *p
== '-' || *p
== '+' || *p
== '='
7020 || *p
== ',' || *p
== '.' || *p
== '@')
7025 starred
= true, p
++;
7031 /* Mark all matching switches as valid. */
7032 for (i
= 0; i
< n_switches
; i
++)
7033 if (!strncmp (switches
[i
].part1
, atom
, len
)
7034 && (starred
|| switches
[i
].part1
[len
] == 0))
7035 switches
[i
].validated
= 1;
7039 if (*p
&& (p
[-1] == '|' || p
[-1] == '&'))
7042 if (*p
&& p
[-1] == ':')
7044 while (*p
&& *p
!= ';' && *p
!= '}')
7049 if (*p
== '{' || *p
== '<')
7050 p
= validate_switches (p
+1);
7051 else if (p
[0] == 'W' && p
[1] == '{')
7052 p
= validate_switches (p
+2);
7059 if (*p
&& p
[-1] == ';')
7073 static struct mdswitchstr
*mdswitches
;
7074 static int n_mdswitches
;
7076 /* Check whether a particular argument was used. The first time we
7077 canonicalize the switches to keep only the ones we care about. */
7080 used_arg (const char *p
, int len
)
7085 const char *replace
;
7090 static struct mswitchstr
*mswitches
;
7091 static int n_mswitches
;
7096 struct mswitchstr
*matches
;
7100 /* Break multilib_matches into the component strings of string
7101 and replacement string. */
7102 for (q
= multilib_matches
; *q
!= '\0'; q
++)
7107 = (struct mswitchstr
*) alloca ((sizeof (struct mswitchstr
)) * cnt
);
7109 q
= multilib_matches
;
7118 fatal_error ("multilib spec %qs is invalid",
7123 matches
[i
].len
= q
- matches
[i
].str
;
7125 matches
[i
].replace
= ++q
;
7126 while (*q
!= ';' && *q
!= '\0')
7129 goto invalid_matches
;
7132 matches
[i
].rep_len
= q
- matches
[i
].replace
;
7138 /* Now build a list of the replacement string for switches that we care
7139 about. Make sure we allocate at least one entry. This prevents
7140 xmalloc from calling fatal, and prevents us from re-executing this
7143 = XNEWVEC (struct mswitchstr
, n_mdswitches
+ (n_switches
? n_switches
: 1));
7144 for (i
= 0; i
< n_switches
; i
++)
7145 if ((switches
[i
].live_cond
& SWITCH_IGNORE
) == 0)
7147 int xlen
= strlen (switches
[i
].part1
);
7148 for (j
= 0; j
< cnt
; j
++)
7149 if (xlen
== matches
[j
].len
7150 && ! strncmp (switches
[i
].part1
, matches
[j
].str
, xlen
))
7152 mswitches
[n_mswitches
].str
= matches
[j
].replace
;
7153 mswitches
[n_mswitches
].len
= matches
[j
].rep_len
;
7154 mswitches
[n_mswitches
].replace
= (char *) 0;
7155 mswitches
[n_mswitches
].rep_len
= 0;
7161 /* Add MULTILIB_DEFAULTS switches too, as long as they were not present
7162 on the command line nor any options mutually incompatible with
7164 for (i
= 0; i
< n_mdswitches
; i
++)
7168 for (q
= multilib_options
; *q
!= '\0'; q
++)
7174 while (strncmp (q
, mdswitches
[i
].str
, mdswitches
[i
].len
) != 0
7175 || strchr (" /", q
[mdswitches
[i
].len
]) == NULL
)
7177 while (*q
!= ' ' && *q
!= '/' && *q
!= '\0')
7184 if (*q
!= ' ' && *q
!= '\0')
7186 while (*r
!= ' ' && *r
!= '\0')
7189 while (*q
!= ' ' && *q
!= '/' && *q
!= '\0')
7192 if (used_arg (r
, q
- r
))
7197 mswitches
[n_mswitches
].str
= mdswitches
[i
].str
;
7198 mswitches
[n_mswitches
].len
= mdswitches
[i
].len
;
7199 mswitches
[n_mswitches
].replace
= (char *) 0;
7200 mswitches
[n_mswitches
].rep_len
= 0;
7213 for (i
= 0; i
< n_mswitches
; i
++)
7214 if (len
== mswitches
[i
].len
&& ! strncmp (p
, mswitches
[i
].str
, len
))
7221 default_arg (const char *p
, int len
)
7225 for (i
= 0; i
< n_mdswitches
; i
++)
7226 if (len
== mdswitches
[i
].len
&& ! strncmp (p
, mdswitches
[i
].str
, len
))
7232 /* Work out the subdirectory to use based on the options. The format of
7233 multilib_select is a list of elements. Each element is a subdirectory
7234 name followed by a list of options followed by a semicolon. The format
7235 of multilib_exclusions is the same, but without the preceding
7236 directory. First gcc will check the exclusions, if none of the options
7237 beginning with an exclamation point are present, and all of the other
7238 options are present, then we will ignore this completely. Passing
7239 that, gcc will consider each multilib_select in turn using the same
7240 rules for matching the options. If a match is found, that subdirectory
7244 set_multilib_dir (void)
7247 unsigned int this_path_len
;
7248 const char *this_path
, *this_arg
;
7249 const char *start
, *end
;
7251 int ok
, ndfltok
, first
;
7254 start
= multilib_defaults
;
7255 while (*start
== ' ' || *start
== '\t')
7257 while (*start
!= '\0')
7260 while (*start
!= ' ' && *start
!= '\t' && *start
!= '\0')
7262 while (*start
== ' ' || *start
== '\t')
7270 mdswitches
= XNEWVEC (struct mdswitchstr
, n_mdswitches
);
7271 for (start
= multilib_defaults
; *start
!= '\0'; start
= end
+ 1)
7273 while (*start
== ' ' || *start
== '\t')
7279 for (end
= start
+ 1;
7280 *end
!= ' ' && *end
!= '\t' && *end
!= '\0'; end
++)
7283 obstack_grow (&multilib_obstack
, start
, end
- start
);
7284 obstack_1grow (&multilib_obstack
, 0);
7285 mdswitches
[i
].str
= XOBFINISH (&multilib_obstack
, const char *);
7286 mdswitches
[i
++].len
= end
- start
;
7293 p
= multilib_exclusions
;
7296 /* Ignore newlines. */
7303 /* Check the arguments. */
7310 fatal_error ("multilib exclusions %qs is invalid",
7311 multilib_exclusions
);
7321 while (*p
!= ' ' && *p
!= ';')
7324 goto invalid_exclusions
;
7328 if (*this_arg
!= '!')
7336 ok
= used_arg (this_arg
, p
- this_arg
);
7351 p
= multilib_select
;
7354 /* Ignore newlines. */
7361 /* Get the initial path. */
7368 fatal_error ("multilib select %qs is invalid",
7373 this_path_len
= p
- this_path
;
7375 /* Check the arguments. */
7382 goto invalid_select
;
7391 while (*p
!= ' ' && *p
!= ';')
7394 goto invalid_select
;
7398 if (*this_arg
!= '!')
7406 /* If this is a default argument, we can just ignore it.
7407 This is true even if this_arg begins with '!'. Beginning
7408 with '!' does not mean that this argument is necessarily
7409 inappropriate for this library: it merely means that
7410 there is a more specific library which uses this
7411 argument. If this argument is a default, we need not
7412 consider that more specific library. */
7413 ok
= used_arg (this_arg
, p
- this_arg
);
7420 if (default_arg (this_arg
, p
- this_arg
))
7429 if (this_path_len
!= 1
7430 || this_path
[0] != '.')
7432 char *new_multilib_dir
= XNEWVEC (char, this_path_len
+ 1);
7435 strncpy (new_multilib_dir
, this_path
, this_path_len
);
7436 new_multilib_dir
[this_path_len
] = '\0';
7437 q
= strchr (new_multilib_dir
, ':');
7440 multilib_dir
= new_multilib_dir
;
7447 const char *q
= this_path
, *end
= this_path
+ this_path_len
;
7449 while (q
< end
&& *q
!= ':')
7453 char *new_multilib_os_dir
= XNEWVEC (char, end
- q
);
7454 memcpy (new_multilib_os_dir
, q
+ 1, end
- q
- 1);
7455 new_multilib_os_dir
[end
- q
- 1] = '\0';
7456 multilib_os_dir
= new_multilib_os_dir
;
7464 if (multilib_dir
== NULL
&& multilib_os_dir
!= NULL
7465 && strcmp (multilib_os_dir
, ".") == 0)
7467 free (CONST_CAST (char *, multilib_os_dir
));
7468 multilib_os_dir
= NULL
;
7470 else if (multilib_dir
!= NULL
&& multilib_os_dir
== NULL
)
7471 multilib_os_dir
= multilib_dir
;
7474 /* Print out the multiple library subdirectory selection
7475 information. This prints out a series of lines. Each line looks
7476 like SUBDIRECTORY;@OPTION@OPTION, with as many options as is
7477 required. Only the desired options are printed out, the negative
7478 matches. The options are print without a leading dash. There are
7479 no spaces to make it easy to use the information in the shell.
7480 Each subdirectory is printed only once. This assumes the ordering
7481 generated by the genmultilib script. Also, we leave out ones that match
7485 print_multilib_info (void)
7487 const char *p
= multilib_select
;
7488 const char *last_path
= 0, *this_path
;
7490 unsigned int last_path_len
= 0;
7495 /* Ignore newlines. */
7502 /* Get the initial path. */
7509 fatal_error ("multilib select %qs is invalid", multilib_select
);
7515 /* When --disable-multilib was used but target defines
7516 MULTILIB_OSDIRNAMES, entries starting with .: are there just
7517 to find multilib_os_dir, so skip them from output. */
7518 if (this_path
[0] == '.' && this_path
[1] == ':')
7521 /* Check for matches with the multilib_exclusions. We don't bother
7522 with the '!' in either list. If any of the exclusion rules match
7523 all of its options with the select rule, we skip it. */
7525 const char *e
= multilib_exclusions
;
7526 const char *this_arg
;
7531 /* Ignore newlines. */
7538 /* Check the arguments. */
7547 fatal_error ("multilib exclusion %qs is invalid",
7548 multilib_exclusions
);
7559 while (*e
!= ' ' && *e
!= ';')
7562 goto invalid_exclusion
;
7570 int len
= e
- this_arg
;
7573 goto invalid_select
;
7577 while (*q
!= ' ' && *q
!= ';')
7580 goto invalid_select
;
7584 if (! strncmp (arg
, this_arg
,
7585 (len
< q
- arg
) ? q
- arg
: len
)
7586 || default_arg (this_arg
, e
- this_arg
))
7616 /* If this is a duplicate, skip it. */
7617 skip
= (last_path
!= 0
7618 && (unsigned int) (p
- this_path
) == last_path_len
7619 && ! strncmp (last_path
, this_path
, last_path_len
));
7621 last_path
= this_path
;
7622 last_path_len
= p
- this_path
;
7625 /* If this directory requires any default arguments, we can skip
7626 it. We will already have printed a directory identical to
7627 this one which does not require that default argument. */
7638 goto invalid_select
;
7645 while (*q
!= ' ' && *q
!= ';')
7648 goto invalid_select
;
7653 && default_arg (arg
, q
- arg
))
7668 for (p1
= last_path
; p1
< p
&& *p1
!= ':'; p1
++)
7679 goto invalid_select
;
7687 use_arg
= *p
!= '!';
7692 while (*p
!= ' ' && *p
!= ';')
7695 goto invalid_select
;
7707 /* If there are extra options, print them now. */
7708 if (multilib_extra
&& *multilib_extra
)
7710 int print_at
= TRUE
;
7713 for (q
= multilib_extra
; *q
!= '\0'; q
++)
7734 /* getenv built-in spec function.
7736 Returns the value of the environment variable given by its first
7737 argument, concatenated with the second argument. If the
7738 environment variable is not defined, a fatal error is issued. */
7741 getenv_spec_function (int argc
, const char **argv
)
7751 value
= getenv (argv
[0]);
7753 fatal_error ("environment variable %qs not defined", argv
[0]);
7755 /* We have to escape every character of the environment variable so
7756 they are not interpreted as active spec characters. A
7757 particularly painful case is when we are reading a variable
7758 holding a windows path complete with \ separators. */
7759 len
= strlen (value
) * 2 + strlen (argv
[1]) + 1;
7760 result
= XNEWVAR (char, len
);
7761 for (ptr
= result
; *value
; ptr
+= 2)
7767 strcpy (ptr
, argv
[1]);
7772 /* if-exists built-in spec function.
7774 Checks to see if the file specified by the absolute pathname in
7775 ARGS exists. Returns that pathname if found.
7777 The usual use for this function is to check for a library file
7778 (whose name has been expanded with %s). */
7781 if_exists_spec_function (int argc
, const char **argv
)
7783 /* Must have only one argument. */
7784 if (argc
== 1 && IS_ABSOLUTE_PATH (argv
[0]) && ! access (argv
[0], R_OK
))
7790 /* if-exists-else built-in spec function.
7792 This is like if-exists, but takes an additional argument which
7793 is returned if the first argument does not exist. */
7796 if_exists_else_spec_function (int argc
, const char **argv
)
7798 /* Must have exactly two arguments. */
7802 if (IS_ABSOLUTE_PATH (argv
[0]) && ! access (argv
[0], R_OK
))
7808 /* replace-outfile built-in spec function.
7810 This looks for the first argument in the outfiles array's name and
7811 replaces it with the second argument. */
7814 replace_outfile_spec_function (int argc
, const char **argv
)
7817 /* Must have exactly two arguments. */
7821 for (i
= 0; i
< n_infiles
; i
++)
7823 if (outfiles
[i
] && !strcmp (outfiles
[i
], argv
[0]))
7824 outfiles
[i
] = xstrdup (argv
[1]);
7829 /* remove-outfile built-in spec function.
7831 * This looks for the first argument in the outfiles array's name and
7835 remove_outfile_spec_function (int argc
, const char **argv
)
7838 /* Must have exactly one argument. */
7842 for (i
= 0; i
< n_infiles
; i
++)
7844 if (outfiles
[i
] && !strcmp (outfiles
[i
], argv
[0]))
7850 /* Given two version numbers, compares the two numbers.
7851 A version number must match the regular expression
7852 ([1-9][0-9]*|0)(\.([1-9][0-9]*|0))*
7855 compare_version_strings (const char *v1
, const char *v2
)
7860 if (regcomp (&r
, "^([1-9][0-9]*|0)(\\.([1-9][0-9]*|0))*$",
7861 REG_EXTENDED
| REG_NOSUB
) != 0)
7863 rresult
= regexec (&r
, v1
, 0, NULL
, 0);
7864 if (rresult
== REG_NOMATCH
)
7865 fatal_error ("invalid version number %qs", v1
);
7866 else if (rresult
!= 0)
7868 rresult
= regexec (&r
, v2
, 0, NULL
, 0);
7869 if (rresult
== REG_NOMATCH
)
7870 fatal_error ("invalid version number %qs", v2
);
7871 else if (rresult
!= 0)
7874 return strverscmp (v1
, v2
);
7878 /* version_compare built-in spec function.
7880 This takes an argument of the following form:
7882 <comparison-op> <arg1> [<arg2>] <switch> <result>
7884 and produces "result" if the comparison evaluates to true,
7885 and nothing if it doesn't.
7887 The supported <comparison-op> values are:
7889 >= true if switch is a later (or same) version than arg1
7891 < true if switch is an earlier version than arg1
7893 >< true if switch is arg1 or later, and earlier than arg2
7894 <> true if switch is earlier than arg1 or is arg2 or later
7896 If the switch is not present, the condition is false unless
7897 the first character of the <comparison-op> is '!'.
7900 %:version-compare(>= 10.3 mmacosx-version-min= -lmx)
7901 adds -lmx if -mmacosx-version-min=10.3.9 was passed. */
7904 version_compare_spec_function (int argc
, const char **argv
)
7908 const char *switch_value
= NULL
;
7913 fatal_error ("too few arguments to %%:version-compare");
7914 if (argv
[0][0] == '\0')
7916 if ((argv
[0][1] == '<' || argv
[0][1] == '>') && argv
[0][0] != '!')
7918 if (argc
!= nargs
+ 3)
7919 fatal_error ("too many arguments to %%:version-compare");
7921 switch_len
= strlen (argv
[nargs
+ 1]);
7922 for (i
= 0; i
< n_switches
; i
++)
7923 if (!strncmp (switches
[i
].part1
, argv
[nargs
+ 1], switch_len
)
7924 && check_live_switch (i
, switch_len
))
7925 switch_value
= switches
[i
].part1
+ switch_len
;
7927 if (switch_value
== NULL
)
7931 comp1
= compare_version_strings (switch_value
, argv
[1]);
7933 comp2
= compare_version_strings (switch_value
, argv
[2]);
7935 comp2
= -1; /* This value unused. */
7938 switch (argv
[0][0] << 8 | argv
[0][1])
7940 case '>' << 8 | '=':
7941 result
= comp1
>= 0;
7943 case '!' << 8 | '<':
7944 result
= comp1
>= 0 || switch_value
== NULL
;
7949 case '!' << 8 | '>':
7950 result
= comp1
< 0 || switch_value
== NULL
;
7952 case '>' << 8 | '<':
7953 result
= comp1
>= 0 && comp2
< 0;
7955 case '<' << 8 | '>':
7956 result
= comp1
< 0 || comp2
>= 0;
7960 fatal_error ("unknown operator %qs in %%:version-compare", argv
[0]);
7965 return argv
[nargs
+ 2];
7968 /* %:include builtin spec function. This differs from %include in that it
7969 can be nested inside a spec, and thus be conditionalized. It takes
7970 one argument, the filename, and looks for it in the startfile path.
7971 The result is always NULL, i.e. an empty expansion. */
7974 include_spec_function (int argc
, const char **argv
)
7981 file
= find_a_file (&startfile_prefixes
, argv
[0], R_OK
, true);
7982 read_specs (file
? file
: argv
[0], FALSE
);
7987 /* %:find-file spec function. This function replaces its argument by
7988 the file found thru find_file, that is the -print-file-name gcc
7991 find_file_spec_function (int argc
, const char **argv
)
7998 file
= find_file (argv
[0]);
8003 /* %:find-plugindir spec function. This function replaces its argument
8004 by the -iplugindir=<dir> option. `dir' is found thru find_file, that
8005 is the -print-file-name gcc program option. */
8007 find_plugindir_spec_function (int argc
, const char **argv ATTRIBUTE_UNUSED
)
8014 option
= concat ("-iplugindir=", find_file ("plugin"), NULL
);
8019 /* %:print-asm-header spec function. Print a banner to say that the
8020 following output is from the assembler. */
8023 print_asm_header_spec_function (int arg ATTRIBUTE_UNUSED
,
8024 const char **argv ATTRIBUTE_UNUSED
)
8026 printf (_("Assembler options\n=================\n\n"));
8027 printf (_("Use \"-Wa,OPTION\" to pass \"OPTION\" to the assembler.\n\n"));
8032 /* Compute a timestamp to initialize flag_random_seed. */
8035 get_local_tick (void)
8039 /* Get some more or less random data. */
8040 #ifdef HAVE_GETTIMEOFDAY
8044 gettimeofday (&tv
, NULL
);
8045 ret
= tv
.tv_sec
* 1000 + tv
.tv_usec
/ 1000;
8049 time_t now
= time (NULL
);
8051 if (now
!= (time_t)-1)
8052 ret
= (unsigned) now
;
8059 /* %:compare-debug-dump-opt spec function. Save the last argument,
8060 expected to be the last -fdump-final-insns option, or generate a
8064 compare_debug_dump_opt_spec_function (int arg
,
8065 const char **argv ATTRIBUTE_UNUSED
)
8070 static char random_seed
[HOST_BITS_PER_WIDE_INT
/ 4 + 3];
8073 fatal_error ("too many arguments to %%:compare-debug-dump-opt");
8075 do_spec_2 ("%{fdump-final-insns=*:%*}");
8076 do_spec_1 (" ", 0, NULL
);
8078 if (VEC_length (const_char_p
, argbuf
) > 0
8079 && strcmp (argv
[VEC_length (const_char_p
, argbuf
) - 1], "."))
8084 name
= xstrdup (argv
[VEC_length (const_char_p
, argbuf
) - 1]);
8089 const char *ext
= NULL
;
8091 if (VEC_length (const_char_p
, argbuf
) > 0)
8093 do_spec_2 ("%{o*:%*}%{!o:%{!S:%b%O}%{S:%b.s}}");
8096 else if (!compare_debug
)
8099 do_spec_2 ("%g.gkd");
8101 do_spec_1 (" ", 0, NULL
);
8103 gcc_assert (VEC_length (const_char_p
, argbuf
) > 0);
8105 name
= concat (VEC_last (const_char_p
, argbuf
), ext
, NULL
);
8107 ret
= concat ("-fdump-final-insns=", name
, NULL
);
8110 which
= compare_debug
< 0;
8111 debug_check_temp_file
[which
] = name
;
8115 unsigned HOST_WIDE_INT value
= get_local_tick () ^ getpid ();
8117 sprintf (random_seed
, HOST_WIDE_INT_PRINT_HEX
, value
);
8121 ret
= concat ("%{!frandom-seed=*:-frandom-seed=", random_seed
, "} ",
8130 static const char *debug_auxbase_opt
;
8132 /* %:compare-debug-self-opt spec function. Expands to the options
8133 that are to be passed in the second compilation of
8137 compare_debug_self_opt_spec_function (int arg
,
8138 const char **argv ATTRIBUTE_UNUSED
)
8141 fatal_error ("too many arguments to %%:compare-debug-self-opt");
8143 if (compare_debug
>= 0)
8146 do_spec_2 ("%{c|S:%{o*:%*}}");
8147 do_spec_1 (" ", 0, NULL
);
8149 if (VEC_length (const_char_p
, argbuf
) > 0)
8150 debug_auxbase_opt
= concat ("-auxbase-strip ",
8151 VEC_last (const_char_p
, argbuf
),
8154 debug_auxbase_opt
= NULL
;
8157 %<o %<MD %<MMD %<MF* %<MG %<MP %<MQ* %<MT* \
8158 %<fdump-final-insns=* -w -S -o %j \
8159 %{!fcompare-debug-second:-fcompare-debug-second} \
8160 ", compare_debug_opt
, NULL
);
8163 /* %:compare-debug-auxbase-opt spec function. Expands to the auxbase
8164 options that are to be passed in the second compilation of
8165 compare-debug. It expects, as an argument, the basename of the
8166 current input file name, with the .gk suffix appended to it. */
8169 compare_debug_auxbase_opt_spec_function (int arg
,
8176 fatal_error ("too few arguments to %%:compare-debug-auxbase-opt");
8179 fatal_error ("too many arguments to %%:compare-debug-auxbase-opt");
8181 if (compare_debug
>= 0)
8184 len
= strlen (argv
[0]);
8185 if (len
< 3 || strcmp (argv
[0] + len
- 3, ".gk") != 0)
8186 fatal_error ("argument to %%:compare-debug-auxbase-opt "
8187 "does not end in .gk");
8189 if (debug_auxbase_opt
)
8190 return debug_auxbase_opt
;
8192 #define OPT "-auxbase "
8195 name
= (char*) xmalloc (sizeof (OPT
) + len
);
8196 memcpy (name
, OPT
, sizeof (OPT
) - 1);
8197 memcpy (name
+ sizeof (OPT
) - 1, argv
[0], len
);
8198 name
[sizeof (OPT
) - 1 + len
] = '\0';
8205 /* %:pass-through-libs spec function. Finds all -l options and input
8206 file names in the lib spec passed to it, and makes a list of them
8207 prepended with the plugin option to cause them to be passed through
8208 to the final link after all the new object files have been added. */
8211 pass_through_libs_spec_func (int argc
, const char **argv
)
8213 char *prepended
= xstrdup (" ");
8215 /* Shlemiel the painter's algorithm. Innately horrible, but at least
8216 we know that there will never be more than a handful of strings to
8217 concat, and it's only once per run, so it's not worth optimising. */
8218 for (n
= 0; n
< argc
; n
++)
8220 char *old
= prepended
;
8221 /* Anything that isn't an option is a full path to an output
8222 file; pass it through if it ends in '.a'. Among options,
8224 if (argv
[n
][0] == '-' && argv
[n
][1] == 'l')
8226 const char *lopt
= argv
[n
] + 2;
8227 /* Handle both joined and non-joined -l options. If for any
8228 reason there's a trailing -l with no joined or following
8229 arg just discard it. */
8230 if (!*lopt
&& ++n
>= argc
)
8234 prepended
= concat (prepended
, "-plugin-opt=-pass-through=-l",
8237 else if (!strcmp (".a", argv
[n
] + strlen (argv
[n
]) - 2))
8239 prepended
= concat (prepended
, "-plugin-opt=-pass-through=",
8240 argv
[n
], " ", NULL
);
8242 if (prepended
!= old
)