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
);
3335 save_switch (concat ("-F", arg
, NULL
), 0, NULL
, validated
);
3338 case OPT_save_temps
:
3339 save_temps_flag
= SAVE_TEMPS_CWD
;
3343 case OPT_save_temps_
:
3344 if (strcmp (arg
, "cwd") == 0)
3345 save_temps_flag
= SAVE_TEMPS_CWD
;
3346 else if (strcmp (arg
, "obj") == 0
3347 || strcmp (arg
, "object") == 0)
3348 save_temps_flag
= SAVE_TEMPS_OBJ
;
3350 fatal_error ("%qs is an unknown -save-temps option",
3351 decoded
->orig_option_with_args_text
);
3354 case OPT_no_canonical_prefixes
:
3355 /* Already handled as a special case, so ignored here. */
3361 /* These options set the variables specified in common.opt
3362 automatically, but do need to be saved for spec
3368 struct user_specs
*user
= XNEW (struct user_specs
);
3370 user
->next
= (struct user_specs
*) 0;
3371 user
->filename
= arg
;
3372 if (user_specs_tail
)
3373 user_specs_tail
->next
= user
;
3375 user_specs_head
= user
;
3376 user_specs_tail
= user
;
3382 target_system_root
= arg
;
3383 target_system_root_changed
= 1;
3388 if (report_times_to_file
)
3389 fclose (report_times_to_file
);
3390 report_times_to_file
= fopen (arg
, "a");
3396 This is similar to -v except that there is no execution
3397 of the commands and the echoed arguments are quoted. It
3398 is intended for use in shell scripts to capture the
3399 driver-generated command line. */
3400 verbose_only_flag
++;
3407 size_t len
= strlen (arg
);
3409 /* Catch the case where the user has forgotten to append a
3410 directory separator to the path. Note, they may be using
3411 -B to add an executable name prefix, eg "i386-elf-", in
3412 order to distinguish between multiple installations of
3413 GCC in the same directory. Hence we must check to see
3414 if appending a directory separator actually makes a
3415 valid directory name. */
3416 if (!IS_DIR_SEPARATOR (arg
[len
- 1])
3417 && is_directory (arg
, false))
3419 char *tmp
= XNEWVEC (char, len
+ 2);
3421 tmp
[len
] = DIR_SEPARATOR
;
3426 add_prefix (&exec_prefixes
, arg
, NULL
,
3427 PREFIX_PRIORITY_B_OPT
, 0, 0);
3428 add_prefix (&startfile_prefixes
, arg
, NULL
,
3429 PREFIX_PRIORITY_B_OPT
, 0, 0);
3430 add_prefix (&include_prefixes
, arg
, NULL
,
3431 PREFIX_PRIORITY_B_OPT
, 0, 0);
3438 if (!strcmp (spec_lang
, "none"))
3439 /* Suppress the warning if -xnone comes after the last input
3440 file, because alternate command interfaces like g++ might
3441 find it useful to place -xnone after each input file. */
3444 last_language_n_infiles
= n_infiles
;
3450 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX) || defined(HAVE_TARGET_OBJECT_SUFFIX)
3451 arg
= convert_filename (arg
, ! have_c
, 0);
3453 /* Save the output name in case -save-temps=obj was used. */
3454 save_temps_prefix
= xstrdup (arg
);
3455 /* On some systems, ld cannot handle "-o" without a space. So
3456 split the option from its argument. */
3457 save_switch ("-o", 1, &arg
, validated
);
3460 case OPT_static_libgcc
:
3461 case OPT_shared_libgcc
:
3462 case OPT_static_libgfortran
:
3463 case OPT_static_libstdc__
:
3464 /* These are always valid, since gcc.c itself understands the
3465 first two, gfortranspec.c understands -static-libgfortran and
3466 g++spec.c understands -static-libstdc++ */
3471 /* Various driver options need no special processing at this
3472 point, having been handled in a prescan above or being
3473 handled by specs. */
3478 save_switch (decoded
->canonical_option
[0],
3479 decoded
->canonical_option_num_elements
- 1,
3480 &decoded
->canonical_option
[1], validated
);
3484 /* Put the driver's standard set of option handlers in *HANDLERS. */
3487 set_option_handlers (struct cl_option_handlers
*handlers
)
3489 handlers
->unknown_option_callback
= driver_unknown_option_callback
;
3490 handlers
->wrong_lang_callback
= driver_wrong_lang_callback
;
3491 handlers
->post_handling_callback
= driver_post_handling_callback
;
3492 handlers
->num_handlers
= 1;
3493 handlers
->handlers
[0].handler
= driver_handle_option
;
3494 handlers
->handlers
[0].mask
= CL_DRIVER
;
3497 /* Create the vector `switches' and its contents.
3498 Store its length in `n_switches'. */
3501 process_command (unsigned int decoded_options_count
,
3502 struct cl_decoded_option
*decoded_options
)
3506 const char *tooldir_prefix
;
3507 char *(*get_relative_prefix
) (const char *, const char *,
3508 const char *) = NULL
;
3509 struct cl_option_handlers handlers
;
3512 gcc_exec_prefix
= getenv ("GCC_EXEC_PREFIX");
3516 added_libraries
= 0;
3518 /* Figure compiler version from version string. */
3520 compiler_version
= temp1
= xstrdup (version_string
);
3522 for (; *temp1
; ++temp1
)
3531 /* Handle any -no-canonical-prefixes flag early, to assign the function
3532 that builds relative prefixes. This function creates default search
3533 paths that are needed later in normal option handling. */
3535 for (j
= 1; j
< decoded_options_count
; j
++)
3537 if (decoded_options
[j
].opt_index
== OPT_no_canonical_prefixes
)
3539 get_relative_prefix
= make_relative_prefix_ignore_links
;
3543 if (! get_relative_prefix
)
3544 get_relative_prefix
= make_relative_prefix
;
3546 /* Set up the default search paths. If there is no GCC_EXEC_PREFIX,
3547 see if we can create it from the pathname specified in
3548 decoded_options[0].arg. */
3550 gcc_libexec_prefix
= standard_libexec_prefix
;
3552 /* FIXME: make_relative_prefix doesn't yet work for VMS. */
3553 if (!gcc_exec_prefix
)
3555 gcc_exec_prefix
= get_relative_prefix (decoded_options
[0].arg
,
3556 standard_bindir_prefix
,
3557 standard_exec_prefix
);
3558 gcc_libexec_prefix
= get_relative_prefix (decoded_options
[0].arg
,
3559 standard_bindir_prefix
,
3560 standard_libexec_prefix
);
3561 if (gcc_exec_prefix
)
3562 xputenv (concat ("GCC_EXEC_PREFIX=", gcc_exec_prefix
, NULL
));
3566 /* make_relative_prefix requires a program name, but
3567 GCC_EXEC_PREFIX is typically a directory name with a trailing
3568 / (which is ignored by make_relative_prefix), so append a
3570 char *tmp_prefix
= concat (gcc_exec_prefix
, "gcc", NULL
);
3571 gcc_libexec_prefix
= get_relative_prefix (tmp_prefix
,
3572 standard_exec_prefix
,
3573 standard_libexec_prefix
);
3575 /* The path is unrelocated, so fallback to the original setting. */
3576 if (!gcc_libexec_prefix
)
3577 gcc_libexec_prefix
= standard_libexec_prefix
;
3583 /* From this point onward, gcc_exec_prefix is non-null if the toolchain
3584 is relocated. The toolchain was either relocated using GCC_EXEC_PREFIX
3585 or an automatically created GCC_EXEC_PREFIX from
3586 decoded_options[0].arg. */
3588 /* Do language-specific adjustment/addition of flags. */
3589 lang_specific_driver (&decoded_options
, &decoded_options_count
,
3592 if (gcc_exec_prefix
)
3594 int len
= strlen (gcc_exec_prefix
);
3596 if (len
> (int) sizeof ("/lib/gcc/") - 1
3597 && (IS_DIR_SEPARATOR (gcc_exec_prefix
[len
-1])))
3599 temp
= gcc_exec_prefix
+ len
- sizeof ("/lib/gcc/") + 1;
3600 if (IS_DIR_SEPARATOR (*temp
)
3601 && strncmp (temp
+ 1, "lib", 3) == 0
3602 && IS_DIR_SEPARATOR (temp
[4])
3603 && strncmp (temp
+ 5, "gcc", 3) == 0)
3604 len
-= sizeof ("/lib/gcc/") - 1;
3607 set_std_prefix (gcc_exec_prefix
, len
);
3608 add_prefix (&exec_prefixes
, gcc_libexec_prefix
, "GCC",
3609 PREFIX_PRIORITY_LAST
, 0, 0);
3610 add_prefix (&startfile_prefixes
, gcc_exec_prefix
, "GCC",
3611 PREFIX_PRIORITY_LAST
, 0, 0);
3614 /* COMPILER_PATH and LIBRARY_PATH have values
3615 that are lists of directory names with colons. */
3617 temp
= getenv ("COMPILER_PATH");
3620 const char *startp
, *endp
;
3621 char *nstore
= (char *) alloca (strlen (temp
) + 3);
3623 startp
= endp
= temp
;
3626 if (*endp
== PATH_SEPARATOR
|| *endp
== 0)
3628 strncpy (nstore
, startp
, endp
- startp
);
3630 strcpy (nstore
, concat (".", dir_separator_str
, NULL
));
3631 else if (!IS_DIR_SEPARATOR (endp
[-1]))
3633 nstore
[endp
- startp
] = DIR_SEPARATOR
;
3634 nstore
[endp
- startp
+ 1] = 0;
3637 nstore
[endp
- startp
] = 0;
3638 add_prefix (&exec_prefixes
, nstore
, 0,
3639 PREFIX_PRIORITY_LAST
, 0, 0);
3640 add_prefix (&include_prefixes
, nstore
, 0,
3641 PREFIX_PRIORITY_LAST
, 0, 0);
3644 endp
= startp
= endp
+ 1;
3651 temp
= getenv (LIBRARY_PATH_ENV
);
3652 if (temp
&& *cross_compile
== '0')
3654 const char *startp
, *endp
;
3655 char *nstore
= (char *) alloca (strlen (temp
) + 3);
3657 startp
= endp
= temp
;
3660 if (*endp
== PATH_SEPARATOR
|| *endp
== 0)
3662 strncpy (nstore
, startp
, endp
- startp
);
3664 strcpy (nstore
, concat (".", dir_separator_str
, NULL
));
3665 else if (!IS_DIR_SEPARATOR (endp
[-1]))
3667 nstore
[endp
- startp
] = DIR_SEPARATOR
;
3668 nstore
[endp
- startp
+ 1] = 0;
3671 nstore
[endp
- startp
] = 0;
3672 add_prefix (&startfile_prefixes
, nstore
, NULL
,
3673 PREFIX_PRIORITY_LAST
, 0, 1);
3676 endp
= startp
= endp
+ 1;
3683 /* Use LPATH like LIBRARY_PATH (for the CMU build program). */
3684 temp
= getenv ("LPATH");
3685 if (temp
&& *cross_compile
== '0')
3687 const char *startp
, *endp
;
3688 char *nstore
= (char *) alloca (strlen (temp
) + 3);
3690 startp
= endp
= temp
;
3693 if (*endp
== PATH_SEPARATOR
|| *endp
== 0)
3695 strncpy (nstore
, startp
, endp
- startp
);
3697 strcpy (nstore
, concat (".", dir_separator_str
, NULL
));
3698 else if (!IS_DIR_SEPARATOR (endp
[-1]))
3700 nstore
[endp
- startp
] = DIR_SEPARATOR
;
3701 nstore
[endp
- startp
+ 1] = 0;
3704 nstore
[endp
- startp
] = 0;
3705 add_prefix (&startfile_prefixes
, nstore
, NULL
,
3706 PREFIX_PRIORITY_LAST
, 0, 1);
3709 endp
= startp
= endp
+ 1;
3716 /* Process the options and store input files and switches in their
3719 last_language_n_infiles
= -1;
3721 set_option_handlers (&handlers
);
3723 for (j
= 1; j
< decoded_options_count
; j
++)
3725 switch (decoded_options
[j
].opt_index
)
3737 for (j
= 1; j
< decoded_options_count
; j
++)
3739 if (decoded_options
[j
].opt_index
== OPT_SPECIAL_input_file
)
3741 const char *arg
= decoded_options
[j
].arg
;
3742 const char *p
= strrchr (arg
, '@');
3746 #ifdef HAVE_TARGET_OBJECT_SUFFIX
3747 arg
= convert_filename (arg
, 0, access (arg
, F_OK
));
3749 /* For LTO static archive support we handle input file
3750 specifications that are composed of a filename and
3751 an offset like FNAME@OFFSET. */
3754 && sscanf (p
, "@%li%n", &offset
, &consumed
) >= 1
3755 && strlen (p
) == (unsigned int)consumed
)
3757 fname
= (char *)xmalloc (p
- arg
+ 1);
3758 memcpy (fname
, arg
, p
- arg
);
3759 fname
[p
- arg
] = '\0';
3760 /* Only accept non-stdin and existing FNAME parts, otherwise
3761 try with the full name. */
3762 if (strcmp (fname
, "-") == 0 || access (fname
, F_OK
) < 0)
3765 fname
= xstrdup (arg
);
3769 fname
= xstrdup (arg
);
3771 if (strcmp (fname
, "-") != 0 && access (fname
, F_OK
) < 0)
3772 perror_with_name (fname
);
3774 add_infile (arg
, spec_lang
);
3780 read_cmdline_option (&global_options
, &global_options_set
,
3781 decoded_options
+ j
, UNKNOWN_LOCATION
,
3782 CL_DRIVER
, &handlers
, global_dc
);
3785 /* If -save-temps=obj and -o name, create the prefix to use for %b.
3786 Otherwise just make -save-temps=obj the same as -save-temps=cwd. */
3787 if (save_temps_flag
== SAVE_TEMPS_OBJ
&& save_temps_prefix
!= NULL
)
3789 save_temps_length
= strlen (save_temps_prefix
);
3790 temp
= strrchr (lbasename (save_temps_prefix
), '.');
3793 save_temps_length
-= strlen (temp
);
3794 save_temps_prefix
[save_temps_length
] = '\0';
3798 else if (save_temps_prefix
!= NULL
)
3800 free (save_temps_prefix
);
3801 save_temps_prefix
= NULL
;
3804 if (save_temps_flag
&& use_pipes
)
3806 /* -save-temps overrides -pipe, so that temp files are produced */
3807 if (save_temps_flag
)
3808 warning (0, "-pipe ignored because -save-temps specified");
3814 const char *gcd
= getenv ("GCC_COMPARE_DEBUG");
3816 if (gcd
&& gcd
[0] == '-')
3819 compare_debug_opt
= gcd
;
3821 else if (gcd
&& *gcd
&& strcmp (gcd
, "0"))
3824 compare_debug_opt
= "-gtoggle";
3827 else if (compare_debug
< 0)
3830 gcc_assert (!compare_debug_opt
);
3833 /* Set up the search paths. We add directories that we expect to
3834 contain GNU Toolchain components before directories specified by
3835 the machine description so that we will find GNU components (like
3836 the GNU assembler) before those of the host system. */
3838 /* If we don't know where the toolchain has been installed, use the
3839 configured-in locations. */
3840 if (!gcc_exec_prefix
)
3843 add_prefix (&exec_prefixes
, standard_libexec_prefix
, "GCC",
3844 PREFIX_PRIORITY_LAST
, 1, 0);
3845 add_prefix (&exec_prefixes
, standard_libexec_prefix
, "BINUTILS",
3846 PREFIX_PRIORITY_LAST
, 2, 0);
3847 add_prefix (&exec_prefixes
, standard_exec_prefix
, "BINUTILS",
3848 PREFIX_PRIORITY_LAST
, 2, 0);
3850 add_prefix (&startfile_prefixes
, standard_exec_prefix
, "BINUTILS",
3851 PREFIX_PRIORITY_LAST
, 1, 0);
3854 gcc_assert (!IS_ABSOLUTE_PATH (tooldir_base_prefix
));
3855 tooldir_prefix
= concat (tooldir_base_prefix
, spec_machine
,
3856 dir_separator_str
, NULL
);
3858 /* Look for tools relative to the location from which the driver is
3859 running, or, if that is not available, the configured prefix. */
3861 = concat (gcc_exec_prefix
? gcc_exec_prefix
: standard_exec_prefix
,
3862 spec_machine
, dir_separator_str
,
3863 spec_version
, dir_separator_str
, tooldir_prefix
, NULL
);
3865 add_prefix (&exec_prefixes
,
3866 concat (tooldir_prefix
, "bin", dir_separator_str
, NULL
),
3867 "BINUTILS", PREFIX_PRIORITY_LAST
, 0, 0);
3868 add_prefix (&startfile_prefixes
,
3869 concat (tooldir_prefix
, "lib", dir_separator_str
, NULL
),
3870 "BINUTILS", PREFIX_PRIORITY_LAST
, 0, 1);
3872 #if defined(TARGET_SYSTEM_ROOT_RELOCATABLE) && !defined(VMS)
3873 /* If the normal TARGET_SYSTEM_ROOT is inside of $exec_prefix,
3874 then consider it to relocate with the rest of the GCC installation
3875 if GCC_EXEC_PREFIX is set.
3876 ``make_relative_prefix'' is not compiled for VMS, so don't call it. */
3877 if (target_system_root
&& !target_system_root_changed
&& gcc_exec_prefix
)
3879 char *tmp_prefix
= get_relative_prefix (decoded_options
[0].arg
,
3880 standard_bindir_prefix
,
3881 target_system_root
);
3882 if (tmp_prefix
&& access_check (tmp_prefix
, F_OK
) == 0)
3884 target_system_root
= tmp_prefix
;
3885 target_system_root_changed
= 1;
3890 /* More prefixes are enabled in main, after we read the specs file
3891 and determine whether this is cross-compilation or not. */
3893 if (n_infiles
== last_language_n_infiles
&& spec_lang
!= 0)
3894 warning (0, "%<-x %s%> after last input file has no effect", spec_lang
);
3896 if (compare_debug
== 2 || compare_debug
== 3)
3899 switches
[n_switches
].part1
= concat ("fcompare-debug=",
3902 switches
[n_switches
].args
= 0;
3903 switches
[n_switches
].live_cond
= 0;
3904 switches
[n_switches
].validated
= 0;
3905 switches
[n_switches
].ordering
= 0;
3910 /* Ensure we only invoke each subprocess once. */
3911 if (print_subprocess_help
|| print_help_list
|| print_version
)
3915 /* Create a dummy input file, so that we can pass
3916 the help option on to the various sub-processes. */
3917 add_infile ("help-dummy", "c");
3921 switches
[n_switches
].part1
= 0;
3923 infiles
[n_infiles
].name
= 0;
3926 /* Store switches not filtered out by %<S in spec in COLLECT_GCC_OPTIONS
3927 and place that in the environment. */
3930 set_collect_gcc_options (void)
3935 /* Build COLLECT_GCC_OPTIONS to have all of the options specified to
3937 obstack_grow (&collect_obstack
, "COLLECT_GCC_OPTIONS=",
3938 sizeof ("COLLECT_GCC_OPTIONS=") - 1);
3941 for (i
= 0; (int) i
< n_switches
; i
++)
3943 const char *const *args
;
3946 obstack_grow (&collect_obstack
, " ", 1);
3950 /* Ignore elided switches. */
3951 if ((switches
[i
].live_cond
3952 & (SWITCH_IGNORE
| SWITCH_KEEP_FOR_GCC
))
3956 obstack_grow (&collect_obstack
, "'-", 2);
3957 q
= switches
[i
].part1
;
3958 while ((p
= strchr (q
, '\'')))
3960 obstack_grow (&collect_obstack
, q
, p
- q
);
3961 obstack_grow (&collect_obstack
, "'\\''", 4);
3964 obstack_grow (&collect_obstack
, q
, strlen (q
));
3965 obstack_grow (&collect_obstack
, "'", 1);
3967 for (args
= switches
[i
].args
; args
&& *args
; args
++)
3969 obstack_grow (&collect_obstack
, " '", 2);
3971 while ((p
= strchr (q
, '\'')))
3973 obstack_grow (&collect_obstack
, q
, p
- q
);
3974 obstack_grow (&collect_obstack
, "'\\''", 4);
3977 obstack_grow (&collect_obstack
, q
, strlen (q
));
3978 obstack_grow (&collect_obstack
, "'", 1);
3981 obstack_grow (&collect_obstack
, "\0", 1);
3982 xputenv (XOBFINISH (&collect_obstack
, char *));
3985 /* Process a spec string, accumulating and running commands. */
3987 /* These variables describe the input file name.
3988 input_file_number is the index on outfiles of this file,
3989 so that the output file name can be stored for later use by %o.
3990 input_basename is the start of the part of the input file
3991 sans all directory names, and basename_length is the number
3992 of characters starting there excluding the suffix .c or whatever. */
3994 static const char *gcc_input_filename
;
3995 static int input_file_number
;
3996 size_t input_filename_length
;
3997 static int basename_length
;
3998 static int suffixed_basename_length
;
3999 static const char *input_basename
;
4000 static const char *input_suffix
;
4001 #ifndef HOST_LACKS_INODE_NUMBERS
4002 static struct stat input_stat
;
4004 static int input_stat_set
;
4006 /* The compiler used to process the current input file. */
4007 static struct compiler
*input_file_compiler
;
4009 /* These are variables used within do_spec and do_spec_1. */
4011 /* Nonzero if an arg has been started and not yet terminated
4012 (with space, tab or newline). */
4013 static int arg_going
;
4015 /* Nonzero means %d or %g has been seen; the next arg to be terminated
4016 is a temporary file name. */
4017 static int delete_this_arg
;
4019 /* Nonzero means %w has been seen; the next arg to be terminated
4020 is the output file name of this compilation. */
4021 static int this_is_output_file
;
4023 /* Nonzero means %s has been seen; the next arg to be terminated
4024 is the name of a library file and we should try the standard
4025 search dirs for it. */
4026 static int this_is_library_file
;
4028 /* Nonzero means %T has been seen; the next arg to be terminated
4029 is the name of a linker script and we should try all of the
4030 standard search dirs for it. If it is found insert a --script
4031 command line switch and then substitute the full path in place,
4032 otherwise generate an error message. */
4033 static int this_is_linker_script
;
4035 /* Nonzero means that the input of this command is coming from a pipe. */
4036 static int input_from_pipe
;
4038 /* Nonnull means substitute this for any suffix when outputting a switches
4040 static const char *suffix_subst
;
4042 /* If there is an argument being accumulated, terminate it and store it. */
4045 end_going_arg (void)
4051 obstack_1grow (&obstack
, 0);
4052 string
= XOBFINISH (&obstack
, const char *);
4053 if (this_is_library_file
)
4054 string
= find_file (string
);
4055 if (this_is_linker_script
)
4057 char * full_script_path
= find_a_file (&startfile_prefixes
, string
, R_OK
, true);
4059 if (full_script_path
== NULL
)
4061 error ("unable to locate default linker script %qs in the library search paths", string
);
4062 /* Script was not found on search path. */
4065 store_arg ("--script", false, false);
4066 string
= full_script_path
;
4068 store_arg (string
, delete_this_arg
, this_is_output_file
);
4069 if (this_is_output_file
)
4070 outfiles
[input_file_number
] = string
;
4076 /* Parse the WRAPPER string which is a comma separated list of the command line
4077 and insert them into the beginning of argbuf. */
4080 insert_wrapper (const char *wrapper
)
4084 char *buf
= xstrdup (wrapper
);
4086 unsigned int old_length
= VEC_length (const_char_p
, argbuf
);
4094 while ((p
= strchr (p
, ',')) != NULL
);
4096 VEC_safe_grow (const_char_p
, heap
, argbuf
, old_length
+ n
);
4097 memmove (VEC_address (const_char_p
, argbuf
) + n
,
4098 VEC_address (const_char_p
, argbuf
),
4099 old_length
* sizeof (const_char_p
));
4110 VEC_replace (const_char_p
, argbuf
, i
, p
);
4113 while ((p
= strchr (p
, ',')) != NULL
);
4114 gcc_assert (i
== n
);
4117 /* Process the spec SPEC and run the commands specified therein.
4118 Returns 0 if the spec is successfully processed; -1 if failed. */
4121 do_spec (const char *spec
)
4125 value
= do_spec_2 (spec
);
4127 /* Force out any unfinished command.
4128 If -pipe, this forces out the last command if it ended in `|'. */
4131 if (VEC_length (const_char_p
, argbuf
) > 0
4132 && !strcmp (VEC_last (const_char_p
, argbuf
), "|"))
4133 VEC_pop (const_char_p
, argbuf
);
4135 set_collect_gcc_options ();
4137 if (VEC_length (const_char_p
, argbuf
) > 0)
4145 do_spec_2 (const char *spec
)
4151 delete_this_arg
= 0;
4152 this_is_output_file
= 0;
4153 this_is_library_file
= 0;
4154 this_is_linker_script
= 0;
4155 input_from_pipe
= 0;
4156 suffix_subst
= NULL
;
4158 result
= do_spec_1 (spec
, 0, NULL
);
4166 /* Process the given spec string and add any new options to the end
4167 of the switches/n_switches array. */
4170 do_option_spec (const char *name
, const char *spec
)
4172 unsigned int i
, value_count
, value_len
;
4173 const char *p
, *q
, *value
;
4174 char *tmp_spec
, *tmp_spec_p
;
4176 if (configure_default_options
[0].name
== NULL
)
4179 for (i
= 0; i
< ARRAY_SIZE (configure_default_options
); i
++)
4180 if (strcmp (configure_default_options
[i
].name
, name
) == 0)
4182 if (i
== ARRAY_SIZE (configure_default_options
))
4185 value
= configure_default_options
[i
].value
;
4186 value_len
= strlen (value
);
4188 /* Compute the size of the final spec. */
4191 while ((p
= strstr (p
, "%(VALUE)")) != NULL
)
4197 /* Replace each %(VALUE) by the specified value. */
4198 tmp_spec
= (char *) alloca (strlen (spec
) + 1
4199 + value_count
* (value_len
- strlen ("%(VALUE)")));
4200 tmp_spec_p
= tmp_spec
;
4202 while ((p
= strstr (q
, "%(VALUE)")) != NULL
)
4204 memcpy (tmp_spec_p
, q
, p
- q
);
4205 tmp_spec_p
= tmp_spec_p
+ (p
- q
);
4206 memcpy (tmp_spec_p
, value
, value_len
);
4207 tmp_spec_p
+= value_len
;
4208 q
= p
+ strlen ("%(VALUE)");
4210 strcpy (tmp_spec_p
, q
);
4212 do_self_spec (tmp_spec
);
4215 /* Process the given spec string and add any new options to the end
4216 of the switches/n_switches array. */
4219 do_self_spec (const char *spec
)
4224 do_spec_1 (" ", 0, NULL
);
4226 /* Mark %<S switches processed by do_self_spec to be ignored permanently.
4227 do_self_specs adds the replacements to switches array, so it shouldn't
4228 be processed afterwards. */
4229 for (i
= 0; i
< n_switches
; i
++)
4230 if ((switches
[i
].live_cond
& SWITCH_IGNORE
))
4231 switches
[i
].live_cond
|= SWITCH_IGNORE_PERMANENTLY
;
4233 if (VEC_length (const_char_p
, argbuf
) > 0)
4235 const char **argbuf_copy
;
4236 struct cl_decoded_option
*decoded_options
;
4237 struct cl_option_handlers handlers
;
4238 unsigned int decoded_options_count
;
4241 /* Create a copy of argbuf with a dummy argv[0] entry for
4242 decode_cmdline_options_to_array. */
4243 argbuf_copy
= XNEWVEC (const char *,
4244 VEC_length (const_char_p
, argbuf
) + 1);
4245 argbuf_copy
[0] = "";
4246 memcpy (argbuf_copy
+ 1, VEC_address (const_char_p
, argbuf
),
4247 VEC_length (const_char_p
, argbuf
) * sizeof (const char *));
4249 decode_cmdline_options_to_array (VEC_length (const_char_p
, argbuf
) + 1,
4251 CL_DRIVER
, &decoded_options
,
4252 &decoded_options_count
);
4254 set_option_handlers (&handlers
);
4256 for (j
= 1; j
< decoded_options_count
; j
++)
4258 switch (decoded_options
[j
].opt_index
)
4260 case OPT_SPECIAL_input_file
:
4261 /* Specs should only generate options, not input
4263 if (strcmp (decoded_options
[j
].arg
, "-") != 0)
4264 fatal_error ("switch %qs does not start with %<-%>",
4265 decoded_options
[j
].arg
);
4267 fatal_error ("spec-generated switch is just %<-%>");
4270 case OPT_fcompare_debug_second
:
4271 case OPT_fcompare_debug
:
4272 case OPT_fcompare_debug_
:
4274 /* Avoid duplicate processing of some options from
4275 compare-debug specs; just save them here. */
4276 save_switch (decoded_options
[j
].canonical_option
[0],
4277 (decoded_options
[j
].canonical_option_num_elements
4279 &decoded_options
[j
].canonical_option
[1], false);
4283 read_cmdline_option (&global_options
, &global_options_set
,
4284 decoded_options
+ j
, UNKNOWN_LOCATION
,
4285 CL_DRIVER
, &handlers
, global_dc
);
4291 switches
[n_switches
].part1
= 0;
4295 /* Callback for processing %D and %I specs. */
4297 struct spec_path_info
{
4302 bool separate_options
;
4306 spec_path (char *path
, void *data
)
4308 struct spec_path_info
*info
= (struct spec_path_info
*) data
;
4312 if (info
->omit_relative
&& !IS_ABSOLUTE_PATH (path
))
4315 if (info
->append_len
!= 0)
4317 len
= strlen (path
);
4318 memcpy (path
+ len
, info
->append
, info
->append_len
+ 1);
4321 if (!is_directory (path
, true))
4324 do_spec_1 (info
->option
, 1, NULL
);
4325 if (info
->separate_options
)
4326 do_spec_1 (" ", 0, NULL
);
4328 if (info
->append_len
== 0)
4330 len
= strlen (path
);
4331 save
= path
[len
- 1];
4332 if (IS_DIR_SEPARATOR (path
[len
- 1]))
4333 path
[len
- 1] = '\0';
4336 do_spec_1 (path
, 1, NULL
);
4337 do_spec_1 (" ", 0, NULL
);
4339 /* Must not damage the original path. */
4340 if (info
->append_len
== 0)
4341 path
[len
- 1] = save
;
4346 /* Create a temporary FILE with the contents of ARGV. Add @FILE to the
4350 create_at_file (char **argv
)
4352 char *temp_file
= make_temp_file ("");
4353 char *at_argument
= concat ("@", temp_file
, NULL
);
4354 FILE *f
= fopen (temp_file
, "w");
4358 fatal_error ("could not open temporary response file %s",
4361 status
= writeargv (argv
, f
);
4364 fatal_error ("could not write to temporary response file %s",
4367 status
= fclose (f
);
4370 fatal_error ("could not close temporary response file %s",
4373 store_arg (at_argument
, 0, 0);
4375 record_temp_file (temp_file
, !save_temps_flag
, !save_temps_flag
);
4378 /* True if we should compile INFILE. */
4381 compile_input_file_p (struct infile
*infile
)
4383 if ((!infile
->language
) || (infile
->language
[0] != '*'))
4384 if (infile
->incompiler
== input_file_compiler
)
4389 /* Process each member of VEC as a spec. */
4392 do_specs_vec (VEC(char_p
,heap
) *vec
)
4397 FOR_EACH_VEC_ELT (char_p
, vec
, ix
, opt
)
4399 do_spec_1 (opt
, 1, NULL
);
4400 /* Make each accumulated option a separate argument. */
4401 do_spec_1 (" ", 0, NULL
);
4405 /* Process the sub-spec SPEC as a portion of a larger spec.
4406 This is like processing a whole spec except that we do
4407 not initialize at the beginning and we do not supply a
4408 newline by default at the end.
4409 INSWITCH nonzero means don't process %-sequences in SPEC;
4410 in this case, % is treated as an ordinary character.
4411 This is used while substituting switches.
4412 INSWITCH nonzero also causes SPC not to terminate an argument.
4414 Value is zero unless a line was finished
4415 and the command on that line reported an error. */
4418 do_spec_1 (const char *spec
, int inswitch
, const char *soft_matched_part
)
4420 const char *p
= spec
;
4426 /* If substituting a switch, treat all chars like letters.
4427 Otherwise, NL, SPC, TAB and % are special. */
4428 switch (inswitch
? 'a' : c
)
4433 if (VEC_length (const_char_p
, argbuf
) > 0
4434 && !strcmp (VEC_last (const_char_p
, argbuf
), "|"))
4436 /* A `|' before the newline means use a pipe here,
4437 but only if -pipe was specified.
4438 Otherwise, execute now and don't pass the `|' as an arg. */
4441 input_from_pipe
= 1;
4445 VEC_pop (const_char_p
, argbuf
);
4448 set_collect_gcc_options ();
4450 if (VEC_length (const_char_p
, argbuf
) > 0)
4456 /* Reinitialize for a new command, and for a new argument. */
4459 delete_this_arg
= 0;
4460 this_is_output_file
= 0;
4461 this_is_library_file
= 0;
4462 this_is_linker_script
= 0;
4463 input_from_pipe
= 0;
4470 obstack_1grow (&obstack
, c
);
4478 /* Reinitialize for a new argument. */
4479 delete_this_arg
= 0;
4480 this_is_output_file
= 0;
4481 this_is_library_file
= 0;
4482 this_is_linker_script
= 0;
4489 fatal_error ("spec %qs invalid", spec
);
4492 if (save_temps_length
)
4493 obstack_grow (&obstack
, save_temps_prefix
, save_temps_length
);
4495 obstack_grow (&obstack
, input_basename
, basename_length
);
4496 if (compare_debug
< 0)
4497 obstack_grow (&obstack
, ".gk", 3);
4502 if (save_temps_length
)
4503 obstack_grow (&obstack
, save_temps_prefix
, save_temps_length
);
4505 obstack_grow (&obstack
, input_basename
, suffixed_basename_length
);
4506 if (compare_debug
< 0)
4507 obstack_grow (&obstack
, ".gk", 3);
4512 delete_this_arg
= 2;
4515 /* Dump out the directories specified with LIBRARY_PATH,
4516 followed by the absolute directories
4517 that we search for startfiles. */
4520 struct spec_path_info info
;
4523 info
.append_len
= 0;
4524 #ifdef RELATIVE_PREFIX_NOT_LINKDIR
4525 /* Used on systems which record the specified -L dirs
4526 and use them to search for dynamic linking.
4527 Relative directories always come from -B,
4528 and it is better not to use them for searching
4529 at run time. In particular, stage1 loses. */
4530 info
.omit_relative
= true;
4532 info
.omit_relative
= false;
4534 info
.separate_options
= false;
4536 for_each_path (&startfile_prefixes
, true, 0, spec_path
, &info
);
4541 /* %efoo means report an error with `foo' as error message
4542 and don't execute any more commands for this file. */
4546 while (*p
!= 0 && *p
!= '\n')
4548 buf
= (char *) alloca (p
- q
+ 1);
4549 strncpy (buf
, q
, p
- q
);
4551 error ("%s", _(buf
));
4556 /* %nfoo means report a notice with `foo' on stderr. */
4560 while (*p
!= 0 && *p
!= '\n')
4562 buf
= (char *) alloca (p
- q
+ 1);
4563 strncpy (buf
, q
, p
- q
);
4565 inform (0, "%s", _(buf
));
4575 /* If save_temps_flag is off, and the HOST_BIT_BUCKET is
4576 defined, and it is not a directory, and it is
4577 writable, use it. Otherwise, treat this like any
4578 other temporary file. */
4580 if ((!save_temps_flag
)
4581 && (stat (HOST_BIT_BUCKET
, &st
) == 0) && (!S_ISDIR (st
.st_mode
))
4582 && (access (HOST_BIT_BUCKET
, W_OK
) == 0))
4584 obstack_grow (&obstack
, HOST_BIT_BUCKET
,
4585 strlen (HOST_BIT_BUCKET
));
4586 delete_this_arg
= 0;
4591 goto create_temp_file
;
4595 obstack_1grow (&obstack
, '-');
4596 delete_this_arg
= 0;
4599 /* consume suffix */
4600 while (*p
== '.' || ISALNUM ((unsigned char) *p
))
4602 if (p
[0] == '%' && p
[1] == 'O')
4607 goto create_temp_file
;
4611 /* consume suffix */
4612 while (*p
== '.' || ISALNUM ((unsigned char) *p
))
4614 if (p
[0] == '%' && p
[1] == 'O')
4619 goto create_temp_file
;
4625 struct temp_name
*t
;
4627 const char *suffix
= p
;
4628 char *saved_suffix
= NULL
;
4630 while (*p
== '.' || ISALNUM ((unsigned char) *p
))
4632 suffix_length
= p
- suffix
;
4633 if (p
[0] == '%' && p
[1] == 'O')
4636 /* We don't support extra suffix characters after %O. */
4637 if (*p
== '.' || ISALNUM ((unsigned char) *p
))
4638 fatal_error ("spec %qs has invalid %<%%0%c%>", spec
, *p
);
4639 if (suffix_length
== 0)
4640 suffix
= TARGET_OBJECT_SUFFIX
;
4644 = XNEWVEC (char, suffix_length
4645 + strlen (TARGET_OBJECT_SUFFIX
));
4646 strncpy (saved_suffix
, suffix
, suffix_length
);
4647 strcpy (saved_suffix
+ suffix_length
,
4648 TARGET_OBJECT_SUFFIX
);
4650 suffix_length
+= strlen (TARGET_OBJECT_SUFFIX
);
4653 if (compare_debug
< 0)
4655 suffix
= concat (".gk", suffix
, NULL
);
4659 /* If -save-temps=obj and -o were specified, use that for the
4661 if (save_temps_length
)
4664 temp_filename_length
4665 = save_temps_length
+ suffix_length
+ 1;
4666 tmp
= (char *) alloca (temp_filename_length
);
4667 memcpy (tmp
, save_temps_prefix
, save_temps_length
);
4668 memcpy (tmp
+ save_temps_length
, suffix
, suffix_length
);
4669 tmp
[save_temps_length
+ suffix_length
] = '\0';
4670 temp_filename
= save_string (tmp
,
4671 temp_filename_length
+ 1);
4672 obstack_grow (&obstack
, temp_filename
,
4673 temp_filename_length
);
4675 delete_this_arg
= 0;
4679 /* If the gcc_input_filename has the same suffix specified
4680 for the %g, %u, or %U, and -save-temps is specified,
4681 we could end up using that file as an intermediate
4682 thus clobbering the user's source file (.e.g.,
4683 gcc -save-temps foo.s would clobber foo.s with the
4684 output of cpp0). So check for this condition and
4685 generate a temp file as the intermediate. */
4687 if (save_temps_flag
)
4690 temp_filename_length
= basename_length
+ suffix_length
+ 1;
4691 tmp
= (char *) alloca (temp_filename_length
);
4692 memcpy (tmp
, input_basename
, basename_length
);
4693 memcpy (tmp
+ basename_length
, suffix
, suffix_length
);
4694 tmp
[basename_length
+ suffix_length
] = '\0';
4695 temp_filename
= tmp
;
4697 if (strcmp (temp_filename
, gcc_input_filename
) != 0)
4699 #ifndef HOST_LACKS_INODE_NUMBERS
4700 struct stat st_temp
;
4702 /* Note, set_input() resets input_stat_set to 0. */
4703 if (input_stat_set
== 0)
4705 input_stat_set
= stat (gcc_input_filename
,
4707 if (input_stat_set
>= 0)
4711 /* If we have the stat for the gcc_input_filename
4712 and we can do the stat for the temp_filename
4713 then the they could still refer to the same
4714 file if st_dev/st_ino's are the same. */
4715 if (input_stat_set
!= 1
4716 || stat (temp_filename
, &st_temp
) < 0
4717 || input_stat
.st_dev
!= st_temp
.st_dev
4718 || input_stat
.st_ino
!= st_temp
.st_ino
)
4720 /* Just compare canonical pathnames. */
4721 char* input_realname
= lrealpath (gcc_input_filename
);
4722 char* temp_realname
= lrealpath (temp_filename
);
4723 bool files_differ
= strcmp (input_realname
, temp_realname
);
4724 free (input_realname
);
4725 free (temp_realname
);
4729 temp_filename
= save_string (temp_filename
,
4730 temp_filename_length
+ 1);
4731 obstack_grow (&obstack
, temp_filename
,
4732 temp_filename_length
);
4734 delete_this_arg
= 0;
4740 /* See if we already have an association of %g/%u/%U and
4742 for (t
= temp_names
; t
; t
= t
->next
)
4743 if (t
->length
== suffix_length
4744 && strncmp (t
->suffix
, suffix
, suffix_length
) == 0
4745 && t
->unique
== (c
== 'u' || c
== 'U' || c
== 'j'))
4748 /* Make a new association if needed. %u and %j
4750 if (t
== 0 || c
== 'u' || c
== 'j')
4754 t
= XNEW (struct temp_name
);
4755 t
->next
= temp_names
;
4758 t
->length
= suffix_length
;
4761 t
->suffix
= saved_suffix
;
4762 saved_suffix
= NULL
;
4765 t
->suffix
= save_string (suffix
, suffix_length
);
4766 t
->unique
= (c
== 'u' || c
== 'U' || c
== 'j');
4767 temp_filename
= make_temp_file (t
->suffix
);
4768 temp_filename_length
= strlen (temp_filename
);
4769 t
->filename
= temp_filename
;
4770 t
->filename_length
= temp_filename_length
;
4774 free (saved_suffix
);
4776 obstack_grow (&obstack
, t
->filename
, t
->filename_length
);
4777 delete_this_arg
= 1;
4785 if (at_file_supplied
)
4787 /* We are going to expand `%i' to `@FILE', where FILE
4788 is a newly-created temporary filename. The filenames
4789 that would usually be expanded in place of %o will be
4790 written to the temporary file. */
4795 for (i
= 0; i
< n_infiles
; i
++)
4796 if (compile_input_file_p (&infiles
[i
]))
4799 argv
= (char **) alloca (sizeof (char *) * (n_files
+ 1));
4801 /* Copy the strings over. */
4802 for (i
= 0, j
= 0; i
< n_infiles
; i
++)
4803 if (compile_input_file_p (&infiles
[i
]))
4805 argv
[j
] = CONST_CAST (char *, infiles
[i
].name
);
4806 infiles
[i
].compiled
= true;
4811 create_at_file (argv
);
4814 for (i
= 0; (int) i
< n_infiles
; i
++)
4815 if (compile_input_file_p (&infiles
[i
]))
4817 store_arg (infiles
[i
].name
, 0, 0);
4818 infiles
[i
].compiled
= true;
4823 obstack_grow (&obstack
, gcc_input_filename
,
4824 input_filename_length
);
4831 struct spec_path_info info
;
4835 do_spec_1 ("-imultilib", 1, NULL
);
4836 /* Make this a separate argument. */
4837 do_spec_1 (" ", 0, NULL
);
4838 do_spec_1 (multilib_dir
, 1, NULL
);
4839 do_spec_1 (" ", 0, NULL
);
4842 if (gcc_exec_prefix
)
4844 do_spec_1 ("-iprefix", 1, NULL
);
4845 /* Make this a separate argument. */
4846 do_spec_1 (" ", 0, NULL
);
4847 do_spec_1 (gcc_exec_prefix
, 1, NULL
);
4848 do_spec_1 (" ", 0, NULL
);
4851 if (target_system_root_changed
||
4852 (target_system_root
&& target_sysroot_hdrs_suffix
))
4854 do_spec_1 ("-isysroot", 1, NULL
);
4855 /* Make this a separate argument. */
4856 do_spec_1 (" ", 0, NULL
);
4857 do_spec_1 (target_system_root
, 1, NULL
);
4858 if (target_sysroot_hdrs_suffix
)
4859 do_spec_1 (target_sysroot_hdrs_suffix
, 1, NULL
);
4860 do_spec_1 (" ", 0, NULL
);
4863 info
.option
= "-isystem";
4864 info
.append
= "include";
4865 info
.append_len
= strlen (info
.append
);
4866 info
.omit_relative
= false;
4867 info
.separate_options
= true;
4869 for_each_path (&include_prefixes
, false, info
.append_len
,
4872 info
.append
= "include-fixed";
4873 if (*sysroot_hdrs_suffix_spec
)
4874 info
.append
= concat (info
.append
, dir_separator_str
,
4875 multilib_dir
, NULL
);
4876 info
.append_len
= strlen (info
.append
);
4877 for_each_path (&include_prefixes
, false, info
.append_len
,
4884 int max
= n_infiles
;
4885 max
+= lang_specific_extra_outfiles
;
4887 if (HAVE_GNU_LD
&& at_file_supplied
)
4889 /* We are going to expand `%o' to `@FILE', where FILE
4890 is a newly-created temporary filename. The filenames
4891 that would usually be expanded in place of %o will be
4892 written to the temporary file. */
4897 /* Convert OUTFILES into a form suitable for writeargv. */
4899 /* Determine how many are non-NULL. */
4900 for (n_files
= 0, i
= 0; i
< max
; i
++)
4901 n_files
+= outfiles
[i
] != NULL
;
4903 argv
= (char **) alloca (sizeof (char *) * (n_files
+ 1));
4905 /* Copy the strings over. */
4906 for (i
= 0, j
= 0; i
< max
; i
++)
4909 argv
[j
] = CONST_CAST (char *, outfiles
[i
]);
4914 create_at_file (argv
);
4917 for (i
= 0; i
< max
; i
++)
4919 store_arg (outfiles
[i
], 0, 0);
4924 obstack_grow (&obstack
, TARGET_OBJECT_SUFFIX
, strlen (TARGET_OBJECT_SUFFIX
));
4929 this_is_library_file
= 1;
4933 this_is_linker_script
= 1;
4937 outfiles
[input_file_number
] = NULL
;
4941 this_is_output_file
= 1;
4946 unsigned int cur_index
= VEC_length (const_char_p
, argbuf
);
4947 /* Handle the {...} following the %W. */
4949 fatal_error ("spec %qs has invalid %<%%W%c%>", spec
, *p
);
4950 p
= handle_braces (p
+ 1);
4954 /* If any args were output, mark the last one for deletion
4956 if (VEC_length (const_char_p
, argbuf
) != cur_index
)
4957 record_temp_file (VEC_last (const_char_p
, argbuf
), 0, 1);
4961 /* %x{OPTION} records OPTION for %X to output. */
4969 /* Skip past the option value and make a copy. */
4971 fatal_error ("spec %qs has invalid %<%%x%c%>", spec
, *p
);
4974 string
= save_string (p1
+ 1, p
- p1
- 2);
4976 /* See if we already recorded this option. */
4977 FOR_EACH_VEC_ELT (char_p
, linker_options
, ix
, opt
)
4978 if (! strcmp (string
, opt
))
4984 /* This option is new; add it. */
4985 add_linker_option (string
, strlen (string
));
4989 /* Dump out the options accumulated previously using %x. */
4991 do_specs_vec (linker_options
);
4994 /* Dump out the options accumulated previously using -Wa,. */
4996 do_specs_vec (assembler_options
);
4999 /* Dump out the options accumulated previously using -Wp,. */
5001 do_specs_vec (preprocessor_options
);
5004 /* Here are digits and numbers that just process
5005 a certain constant string as a spec. */
5008 value
= do_spec_1 (cc1_spec
, 0, NULL
);
5014 value
= do_spec_1 (cc1plus_spec
, 0, NULL
);
5020 value
= do_spec_1 (asm_spec
, 0, NULL
);
5026 value
= do_spec_1 (asm_final_spec
, 0, NULL
);
5033 const char *const spec
5034 = (input_file_compiler
->cpp_spec
5035 ? input_file_compiler
->cpp_spec
5037 value
= do_spec_1 (spec
, 0, NULL
);
5044 value
= do_spec_1 (endfile_spec
, 0, NULL
);
5050 value
= do_spec_1 (link_spec
, 0, NULL
);
5056 value
= do_spec_1 (lib_spec
, 0, NULL
);
5062 value
= do_spec_1 (libgcc_spec
, 0, NULL
);
5068 /* We assume there is a directory
5069 separator at the end of this string. */
5070 if (target_system_root
)
5072 obstack_grow (&obstack
, target_system_root
,
5073 strlen (target_system_root
));
5074 if (target_sysroot_suffix
)
5075 obstack_grow (&obstack
, target_sysroot_suffix
,
5076 strlen (target_sysroot_suffix
));
5081 value
= do_spec_1 (startfile_spec
, 0, NULL
);
5086 /* Here we define characters other than letters and digits. */
5089 p
= handle_braces (p
);
5095 p
= handle_spec_function (p
);
5101 obstack_1grow (&obstack
, '%');
5108 while (p
[len
] && p
[len
] != ' ' && p
[len
] != '%')
5110 suffix_subst
= save_string (p
- 1, len
+ 1);
5115 /* Henceforth ignore the option(s) matching the pattern
5121 int have_wildcard
= 0;
5126 switch_option
= SWITCH_IGNORE
| SWITCH_KEEP_FOR_GCC
;
5128 switch_option
= SWITCH_IGNORE
;
5130 while (p
[len
] && p
[len
] != ' ' && p
[len
] != '\t')
5133 if (p
[len
-1] == '*')
5136 for (i
= 0; i
< n_switches
; i
++)
5137 if (!strncmp (switches
[i
].part1
, p
, len
- have_wildcard
)
5138 && (have_wildcard
|| switches
[i
].part1
[len
] == '\0'))
5140 switches
[i
].live_cond
|= switch_option
;
5141 switches
[i
].validated
= 1;
5149 if (soft_matched_part
)
5151 do_spec_1 (soft_matched_part
, 1, NULL
);
5152 do_spec_1 (" ", 0, NULL
);
5155 /* Catch the case where a spec string contains something like
5156 '%{foo:%*}'. i.e. there is no * in the pattern on the left
5157 hand side of the :. */
5158 error ("spec failure: %<%%*%> has not been initialized by pattern match");
5161 /* Process a string found as the value of a spec given by name.
5162 This feature allows individual machine descriptions
5163 to add and use their own specs.
5164 %[...] modifies -D options the way %P does;
5165 %(...) uses the spec unmodified. */
5167 warning (0, "use of obsolete %%[ operator in specs");
5170 const char *name
= p
;
5171 struct spec_list
*sl
;
5174 /* The string after the S/P is the name of a spec that is to be
5176 while (*p
&& *p
!= ')' && *p
!= ']')
5179 /* See if it's in the list. */
5180 for (len
= p
- name
, sl
= specs
; sl
; sl
= sl
->next
)
5181 if (sl
->name_len
== len
&& !strncmp (sl
->name
, name
, len
))
5183 name
= *(sl
->ptr_spec
);
5185 fnotice (stderr
, "Processing spec %c%s%c, which is '%s'\n",
5186 c
, sl
->name
, (c
== '(') ? ')' : ']', name
);
5195 value
= do_spec_1 (name
, 0, NULL
);
5201 char *x
= (char *) alloca (strlen (name
) * 2 + 1);
5203 const char *y
= name
;
5206 /* Copy all of NAME into BUF, but put __ after
5207 every -D and at the end of each arg. */
5210 if (! strncmp (y
, "-D", 2))
5221 && (*y
== ' ' || *y
== '\t' || *y
== '='
5222 || *y
== '}' || *y
== 0))
5235 value
= do_spec_1 (buf
, 0, NULL
);
5241 /* Discard the closing paren or bracket. */
5248 error ("spec failure: unrecognized spec option %qc", c
);
5254 /* Backslash: treat next character as ordinary. */
5259 /* Ordinary character: put it into the current argument. */
5260 obstack_1grow (&obstack
, c
);
5264 /* End of string. If we are processing a spec function, we need to
5265 end any pending argument. */
5266 if (processing_spec_function
)
5272 /* Look up a spec function. */
5274 static const struct spec_function
*
5275 lookup_spec_function (const char *name
)
5277 const struct spec_function
*sf
;
5279 for (sf
= static_spec_functions
; sf
->name
!= NULL
; sf
++)
5280 if (strcmp (sf
->name
, name
) == 0)
5286 /* Evaluate a spec function. */
5289 eval_spec_function (const char *func
, const char *args
)
5291 const struct spec_function
*sf
;
5292 const char *funcval
;
5294 /* Saved spec processing context. */
5295 VEC(const_char_p
,heap
) *save_argbuf
;
5298 int save_delete_this_arg
;
5299 int save_this_is_output_file
;
5300 int save_this_is_library_file
;
5301 int save_input_from_pipe
;
5302 int save_this_is_linker_script
;
5303 const char *save_suffix_subst
;
5306 sf
= lookup_spec_function (func
);
5308 fatal_error ("unknown spec function %qs", func
);
5310 /* Push the spec processing context. */
5311 save_argbuf
= argbuf
;
5313 save_arg_going
= arg_going
;
5314 save_delete_this_arg
= delete_this_arg
;
5315 save_this_is_output_file
= this_is_output_file
;
5316 save_this_is_library_file
= this_is_library_file
;
5317 save_this_is_linker_script
= this_is_linker_script
;
5318 save_input_from_pipe
= input_from_pipe
;
5319 save_suffix_subst
= suffix_subst
;
5321 /* Create a new spec processing context, and build the function
5325 if (do_spec_2 (args
) < 0)
5326 fatal_error ("error in args to spec function %qs", func
);
5328 /* argbuf_index is an index for the next argument to be inserted, and
5329 so contains the count of the args already inserted. */
5331 funcval
= (*sf
->func
) (VEC_length (const_char_p
, argbuf
),
5332 VEC_address (const_char_p
, argbuf
));
5334 /* Pop the spec processing context. */
5335 VEC_free (const_char_p
, heap
, argbuf
);
5336 argbuf
= save_argbuf
;
5338 arg_going
= save_arg_going
;
5339 delete_this_arg
= save_delete_this_arg
;
5340 this_is_output_file
= save_this_is_output_file
;
5341 this_is_library_file
= save_this_is_library_file
;
5342 this_is_linker_script
= save_this_is_linker_script
;
5343 input_from_pipe
= save_input_from_pipe
;
5344 suffix_subst
= save_suffix_subst
;
5349 /* Handle a spec function call of the form:
5353 ARGS is processed as a spec in a separate context and split into an
5354 argument vector in the normal fashion. The function returns a string
5355 containing a spec which we then process in the caller's context, or
5356 NULL if no processing is required. */
5359 handle_spec_function (const char *p
)
5362 const char *endp
, *funcval
;
5365 processing_spec_function
++;
5367 /* Get the function name. */
5368 for (endp
= p
; *endp
!= '\0'; endp
++)
5370 if (*endp
== '(') /* ) */
5372 /* Only allow [A-Za-z0-9], -, and _ in function names. */
5373 if (!ISALNUM (*endp
) && !(*endp
== '-' || *endp
== '_'))
5374 fatal_error ("malformed spec function name");
5376 if (*endp
!= '(') /* ) */
5377 fatal_error ("no arguments for spec function");
5378 func
= save_string (p
, endp
- p
);
5381 /* Get the arguments. */
5382 for (count
= 0; *endp
!= '\0'; endp
++)
5391 else if (*endp
== '(') /* ) */
5396 fatal_error ("malformed spec function arguments");
5397 args
= save_string (p
, endp
- p
);
5400 /* p now points to just past the end of the spec function expression. */
5402 funcval
= eval_spec_function (func
, args
);
5403 if (funcval
!= NULL
&& do_spec_1 (funcval
, 0, NULL
) < 0)
5409 processing_spec_function
--;
5414 /* Inline subroutine of handle_braces. Returns true if the current
5415 input suffix matches the atom bracketed by ATOM and END_ATOM. */
5417 input_suffix_matches (const char *atom
, const char *end_atom
)
5419 return (input_suffix
5420 && !strncmp (input_suffix
, atom
, end_atom
- atom
)
5421 && input_suffix
[end_atom
- atom
] == '\0');
5424 /* Subroutine of handle_braces. Returns true if the current
5425 input file's spec name matches the atom bracketed by ATOM and END_ATOM. */
5427 input_spec_matches (const char *atom
, const char *end_atom
)
5429 return (input_file_compiler
5430 && input_file_compiler
->suffix
5431 && input_file_compiler
->suffix
[0] != '\0'
5432 && !strncmp (input_file_compiler
->suffix
+ 1, atom
,
5434 && input_file_compiler
->suffix
[end_atom
- atom
+ 1] == '\0');
5437 /* Subroutine of handle_braces. Returns true if a switch
5438 matching the atom bracketed by ATOM and END_ATOM appeared on the
5441 switch_matches (const char *atom
, const char *end_atom
, int starred
)
5444 int len
= end_atom
- atom
;
5445 int plen
= starred
? len
: -1;
5447 for (i
= 0; i
< n_switches
; i
++)
5448 if (!strncmp (switches
[i
].part1
, atom
, len
)
5449 && (starred
|| switches
[i
].part1
[len
] == '\0')
5450 && check_live_switch (i
, plen
))
5456 /* Inline subroutine of handle_braces. Mark all of the switches which
5457 match ATOM (extends to END_ATOM; STARRED indicates whether there
5458 was a star after the atom) for later processing. */
5460 mark_matching_switches (const char *atom
, const char *end_atom
, int starred
)
5463 int len
= end_atom
- atom
;
5464 int plen
= starred
? len
: -1;
5466 for (i
= 0; i
< n_switches
; i
++)
5467 if (!strncmp (switches
[i
].part1
, atom
, len
)
5468 && (starred
|| switches
[i
].part1
[len
] == '\0')
5469 && check_live_switch (i
, plen
))
5470 switches
[i
].ordering
= 1;
5473 /* Inline subroutine of handle_braces. Process all the currently
5474 marked switches through give_switch, and clear the marks. */
5476 process_marked_switches (void)
5480 for (i
= 0; i
< n_switches
; i
++)
5481 if (switches
[i
].ordering
== 1)
5483 switches
[i
].ordering
= 0;
5488 /* Handle a %{ ... } construct. P points just inside the leading {.
5489 Returns a pointer one past the end of the brace block, or 0
5490 if we call do_spec_1 and that returns -1. */
5493 handle_braces (const char *p
)
5495 const char *atom
, *end_atom
;
5496 const char *d_atom
= NULL
, *d_end_atom
= NULL
;
5497 const char *orig
= p
;
5505 bool a_must_be_last
= false;
5506 bool ordered_set
= false;
5507 bool disjunct_set
= false;
5508 bool disj_matched
= false;
5509 bool disj_starred
= true;
5510 bool n_way_choice
= false;
5511 bool n_way_matched
= false;
5513 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
5520 /* Scan one "atom" (S in the description above of %{}, possibly
5521 with '!', '.', '@', ',', or '*' modifiers). */
5523 a_is_suffix
= false;
5524 a_is_starred
= false;
5525 a_is_negated
= false;
5526 a_is_spectype
= false;
5530 p
++, a_is_negated
= true;
5534 p
++, a_is_suffix
= true;
5536 p
++, a_is_spectype
= true;
5539 while (ISIDNUM(*p
) || *p
== '-' || *p
== '+' || *p
== '='
5540 || *p
== ',' || *p
== '.' || *p
== '@')
5545 p
++, a_is_starred
= 1;
5551 /* Substitute the switch(es) indicated by the current atom. */
5553 if (disjunct_set
|| n_way_choice
|| a_is_negated
|| a_is_suffix
5554 || a_is_spectype
|| atom
== end_atom
)
5557 mark_matching_switches (atom
, end_atom
, a_is_starred
);
5560 process_marked_switches ();
5564 /* Substitute some text if the current atom appears as a switch
5566 disjunct_set
= true;
5570 if (atom
== end_atom
)
5572 if (!n_way_choice
|| disj_matched
|| *p
== '|'
5573 || a_is_negated
|| a_is_suffix
|| a_is_spectype
5577 /* An empty term may appear as the last choice of an
5578 N-way choice set; it means "otherwise". */
5579 a_must_be_last
= true;
5580 disj_matched
= !n_way_matched
;
5581 disj_starred
= false;
5585 if ((a_is_suffix
|| a_is_spectype
) && a_is_starred
)
5589 disj_starred
= false;
5591 /* Don't bother testing this atom if we already have a
5593 if (!disj_matched
&& !n_way_matched
)
5596 a_matched
= input_suffix_matches (atom
, end_atom
);
5597 else if (a_is_spectype
)
5598 a_matched
= input_spec_matches (atom
, end_atom
);
5600 a_matched
= switch_matches (atom
, end_atom
, a_is_starred
);
5602 if (a_matched
!= a_is_negated
)
5604 disj_matched
= true;
5606 d_end_atom
= end_atom
;
5613 /* Found the body, that is, the text to substitute if the
5614 current disjunction matches. */
5615 p
= process_brace_body (p
+ 1, d_atom
, d_end_atom
, disj_starred
,
5616 disj_matched
&& !n_way_matched
);
5620 /* If we have an N-way choice, reset state for the next
5624 n_way_choice
= true;
5625 n_way_matched
|= disj_matched
;
5626 disj_matched
= false;
5627 disj_starred
= true;
5628 d_atom
= d_end_atom
= NULL
;
5637 while (*p
++ != '}');
5642 fatal_error ("braced spec %qs is invalid at %qc", orig
, *p
);
5647 /* Subroutine of handle_braces. Scan and process a brace substitution body
5648 (X in the description of %{} syntax). P points one past the colon;
5649 ATOM and END_ATOM bracket the first atom which was found to be true
5650 (present) in the current disjunction; STARRED indicates whether all
5651 the atoms in the current disjunction were starred (for syntax validation);
5652 MATCHED indicates whether the disjunction matched or not, and therefore
5653 whether or not the body is to be processed through do_spec_1 or just
5654 skipped. Returns a pointer to the closing } or ;, or 0 if do_spec_1
5658 process_brace_body (const char *p
, const char *atom
, const char *end_atom
,
5659 int starred
, int matched
)
5661 const char *body
, *end_body
;
5662 unsigned int nesting_level
;
5663 bool have_subst
= false;
5665 /* Locate the closing } or ;, honoring nested braces.
5666 Trim trailing whitespace. */
5675 if (!--nesting_level
)
5678 else if (*p
== ';' && nesting_level
== 1)
5680 else if (*p
== '%' && p
[1] == '*' && nesting_level
== 1)
5682 else if (*p
== '\0')
5688 while (end_body
[-1] == ' ' || end_body
[-1] == '\t')
5691 if (have_subst
&& !starred
)
5696 /* Copy the substitution body to permanent storage and execute it.
5697 If have_subst is false, this is a simple matter of running the
5698 body through do_spec_1... */
5699 char *string
= save_string (body
, end_body
- body
);
5702 if (do_spec_1 (string
, 0, NULL
) < 0)
5707 /* ... but if have_subst is true, we have to process the
5708 body once for each matching switch, with %* set to the
5709 variant part of the switch. */
5710 unsigned int hard_match_len
= end_atom
- atom
;
5713 for (i
= 0; i
< n_switches
; i
++)
5714 if (!strncmp (switches
[i
].part1
, atom
, hard_match_len
)
5715 && check_live_switch (i
, hard_match_len
))
5717 if (do_spec_1 (string
, 0,
5718 &switches
[i
].part1
[hard_match_len
]) < 0)
5720 /* Pass any arguments this switch has. */
5722 suffix_subst
= NULL
;
5730 fatal_error ("braced spec body %qs is invalid", body
);
5733 /* Return 0 iff switch number SWITCHNUM is obsoleted by a later switch
5734 on the command line. PREFIX_LENGTH is the length of XXX in an {XXX*}
5735 spec, or -1 if either exact match or %* is used.
5737 A -O switch is obsoleted by a later -O switch. A -f, -m, or -W switch
5738 whose value does not begin with "no-" is obsoleted by the same value
5739 with the "no-", similarly for a switch with the "no-" prefix. */
5742 check_live_switch (int switchnum
, int prefix_length
)
5744 const char *name
= switches
[switchnum
].part1
;
5747 /* If we already processed this switch and determined if it was
5748 live or not, return our past determination. */
5749 if (switches
[switchnum
].live_cond
!= 0)
5750 return ((switches
[switchnum
].live_cond
& SWITCH_LIVE
) != 0
5751 && (switches
[switchnum
].live_cond
& SWITCH_FALSE
) == 0
5752 && (switches
[switchnum
].live_cond
& SWITCH_IGNORE_PERMANENTLY
)
5755 /* In the common case of {<at-most-one-letter>*}, a negating
5756 switch would always match, so ignore that case. We will just
5757 send the conflicting switches to the compiler phase. */
5758 if (prefix_length
>= 0 && prefix_length
<= 1)
5761 /* Now search for duplicate in a manner that depends on the name. */
5765 for (i
= switchnum
+ 1; i
< n_switches
; i
++)
5766 if (switches
[i
].part1
[0] == 'O')
5768 switches
[switchnum
].validated
= 1;
5769 switches
[switchnum
].live_cond
= SWITCH_FALSE
;
5774 case 'W': case 'f': case 'm':
5775 if (! strncmp (name
+ 1, "no-", 3))
5777 /* We have Xno-YYY, search for XYYY. */
5778 for (i
= switchnum
+ 1; i
< n_switches
; i
++)
5779 if (switches
[i
].part1
[0] == name
[0]
5780 && ! strcmp (&switches
[i
].part1
[1], &name
[4]))
5782 switches
[switchnum
].validated
= 1;
5783 switches
[switchnum
].live_cond
= SWITCH_FALSE
;
5789 /* We have XYYY, search for Xno-YYY. */
5790 for (i
= switchnum
+ 1; i
< n_switches
; i
++)
5791 if (switches
[i
].part1
[0] == name
[0]
5792 && switches
[i
].part1
[1] == 'n'
5793 && switches
[i
].part1
[2] == 'o'
5794 && switches
[i
].part1
[3] == '-'
5795 && !strcmp (&switches
[i
].part1
[4], &name
[1]))
5797 switches
[switchnum
].validated
= 1;
5798 switches
[switchnum
].live_cond
= SWITCH_FALSE
;
5805 /* Otherwise the switch is live. */
5806 switches
[switchnum
].live_cond
|= SWITCH_LIVE
;
5810 /* Pass a switch to the current accumulating command
5811 in the same form that we received it.
5812 SWITCHNUM identifies the switch; it is an index into
5813 the vector of switches gcc received, which is `switches'.
5814 This cannot fail since it never finishes a command line.
5816 If OMIT_FIRST_WORD is nonzero, then we omit .part1 of the argument. */
5819 give_switch (int switchnum
, int omit_first_word
)
5821 if ((switches
[switchnum
].live_cond
& SWITCH_IGNORE
) != 0)
5824 if (!omit_first_word
)
5826 do_spec_1 ("-", 0, NULL
);
5827 do_spec_1 (switches
[switchnum
].part1
, 1, NULL
);
5830 if (switches
[switchnum
].args
!= 0)
5833 for (p
= switches
[switchnum
].args
; *p
; p
++)
5835 const char *arg
= *p
;
5837 do_spec_1 (" ", 0, NULL
);
5840 unsigned length
= strlen (arg
);
5843 while (length
-- && !IS_DIR_SEPARATOR (arg
[length
]))
5844 if (arg
[length
] == '.')
5846 (CONST_CAST(char *, arg
))[length
] = 0;
5850 do_spec_1 (arg
, 1, NULL
);
5852 (CONST_CAST(char *, arg
))[length
] = '.';
5853 do_spec_1 (suffix_subst
, 1, NULL
);
5856 do_spec_1 (arg
, 1, NULL
);
5860 do_spec_1 (" ", 0, NULL
);
5861 switches
[switchnum
].validated
= 1;
5864 /* Search for a file named NAME trying various prefixes including the
5865 user's -B prefix and some standard ones.
5866 Return the absolute file name found. If nothing is found, return NAME. */
5869 find_file (const char *name
)
5871 char *newname
= find_a_file (&startfile_prefixes
, name
, R_OK
, true);
5872 return newname
? newname
: name
;
5875 /* Determine whether a directory exists. If LINKER, return 0 for
5876 certain fixed names not needed by the linker. */
5879 is_directory (const char *path1
, bool linker
)
5886 /* Ensure the string ends with "/.". The resulting path will be a
5887 directory even if the given path is a symbolic link. */
5888 len1
= strlen (path1
);
5889 path
= (char *) alloca (3 + len1
);
5890 memcpy (path
, path1
, len1
);
5892 if (!IS_DIR_SEPARATOR (cp
[-1]))
5893 *cp
++ = DIR_SEPARATOR
;
5897 /* Exclude directories that the linker is known to search. */
5899 && IS_DIR_SEPARATOR (path
[0])
5901 && strncmp (path
+ 1, "lib", 3) == 0)
5903 && strncmp (path
+ 1, "usr", 3) == 0
5904 && IS_DIR_SEPARATOR (path
[4])
5905 && strncmp (path
+ 5, "lib", 3) == 0)))
5908 return (stat (path
, &st
) >= 0 && S_ISDIR (st
.st_mode
));
5911 /* Set up the various global variables to indicate that we're processing
5912 the input file named FILENAME. */
5915 set_input (const char *filename
)
5919 gcc_input_filename
= filename
;
5920 input_filename_length
= strlen (gcc_input_filename
);
5921 input_basename
= lbasename (gcc_input_filename
);
5923 /* Find a suffix starting with the last period,
5924 and set basename_length to exclude that suffix. */
5925 basename_length
= strlen (input_basename
);
5926 suffixed_basename_length
= basename_length
;
5927 p
= input_basename
+ basename_length
;
5928 while (p
!= input_basename
&& *p
!= '.')
5930 if (*p
== '.' && p
!= input_basename
)
5932 basename_length
= p
- input_basename
;
5933 input_suffix
= p
+ 1;
5938 /* If a spec for 'g', 'u', or 'U' is seen with -save-temps then
5939 we will need to do a stat on the gcc_input_filename. The
5940 INPUT_STAT_SET signals that the stat is needed. */
5944 /* On fatal signals, delete all the temporary files. */
5947 fatal_signal (int signum
)
5949 signal (signum
, SIG_DFL
);
5950 delete_failure_queue ();
5951 delete_temp_files ();
5952 /* Get the same signal again, this time not handled,
5953 so its normal effect occurs. */
5954 kill (getpid (), signum
);
5957 /* Compare the contents of the two files named CMPFILE[0] and
5958 CMPFILE[1]. Return zero if they're identical, nonzero
5962 compare_files (char *cmpfile
[])
5965 FILE *temp
[2] = { NULL
, NULL
};
5971 void *map
[2] = { NULL
, NULL
};
5973 for (i
= 0; i
< 2; i
++)
5977 if (stat (cmpfile
[i
], &st
) < 0 || !S_ISREG (st
.st_mode
))
5979 error ("%s: could not determine length of compare-debug file %s",
5980 gcc_input_filename
, cmpfile
[i
]);
5985 length
[i
] = st
.st_size
;
5988 if (!ret
&& length
[0] != length
[1])
5990 error ("%s: -fcompare-debug failure (length)", gcc_input_filename
);
5995 for (i
= 0; i
< 2; i
++)
5997 int fd
= open (cmpfile
[i
], O_RDONLY
);
6000 error ("%s: could not open compare-debug file %s",
6001 gcc_input_filename
, cmpfile
[i
]);
6006 map
[i
] = mmap (NULL
, length
[i
], PROT_READ
, MAP_PRIVATE
, fd
, 0);
6009 if (map
[i
] == (void *) MAP_FAILED
)
6018 if (memcmp (map
[0], map
[1], length
[0]) != 0)
6020 error ("%s: -fcompare-debug failure", gcc_input_filename
);
6025 for (i
= 0; i
< 2; i
++)
6027 munmap ((caddr_t
) map
[i
], length
[i
]);
6036 for (i
= 0; i
< 2; i
++)
6038 temp
[i
] = fopen (cmpfile
[i
], "r");
6041 error ("%s: could not open compare-debug file %s",
6042 gcc_input_filename
, cmpfile
[i
]);
6048 if (!ret
&& temp
[0] && temp
[1])
6052 c0
= fgetc (temp
[0]);
6053 c1
= fgetc (temp
[1]);
6057 error ("%s: -fcompare-debug failure",
6058 gcc_input_filename
);
6067 for (i
= 1; i
>= 0; i
--)
6076 extern int main (int, char **);
6079 main (int argc
, char **argv
)
6083 int linker_was_run
= 0;
6084 int lang_n_infiles
= 0;
6085 int num_linker_inputs
= 0;
6086 char *explicit_link_files
;
6088 char *lto_wrapper_file
;
6090 struct user_specs
*uptr
;
6091 char **old_argv
= argv
;
6092 struct cl_decoded_option
*decoded_options
;
6093 unsigned int decoded_options_count
;
6095 /* Initialize here, not in definition. The IRIX 6 O32 cc sometimes chokes
6096 on ?: in file-scope variable initializations. */
6097 asm_debug
= ASM_DEBUG_SPEC
;
6099 p
= argv
[0] + strlen (argv
[0]);
6100 while (p
!= argv
[0] && !IS_DIR_SEPARATOR (p
[-1]))
6104 xmalloc_set_program_name (progname
);
6106 expandargv (&argc
, &argv
);
6108 /* Determine if any expansions were made. */
6109 if (argv
!= old_argv
)
6110 at_file_supplied
= true;
6112 global_options
= global_options_init
;
6114 decode_cmdline_options_to_array (argc
, CONST_CAST2 (const char **, char **,
6117 &decoded_options
, &decoded_options_count
);
6119 #ifdef GCC_DRIVER_HOST_INITIALIZATION
6120 /* Perform host dependent initialization when needed. */
6121 GCC_DRIVER_HOST_INITIALIZATION
;
6124 /* Unlock the stdio streams. */
6125 unlock_std_streams ();
6127 gcc_init_libintl ();
6129 diagnostic_initialize (global_dc
, 0);
6130 if (atexit (delete_temp_files
) != 0)
6131 fatal_error ("atexit failed");
6133 if (signal (SIGINT
, SIG_IGN
) != SIG_IGN
)
6134 signal (SIGINT
, fatal_signal
);
6136 if (signal (SIGHUP
, SIG_IGN
) != SIG_IGN
)
6137 signal (SIGHUP
, fatal_signal
);
6139 if (signal (SIGTERM
, SIG_IGN
) != SIG_IGN
)
6140 signal (SIGTERM
, fatal_signal
);
6142 if (signal (SIGPIPE
, SIG_IGN
) != SIG_IGN
)
6143 signal (SIGPIPE
, fatal_signal
);
6146 /* We *MUST* set SIGCHLD to SIG_DFL so that the wait4() call will
6147 receive the signal. A different setting is inheritable */
6148 signal (SIGCHLD
, SIG_DFL
);
6151 /* Allocate the argument vector. */
6154 obstack_init (&obstack
);
6156 /* Build multilib_select, et. al from the separate lines that make up each
6157 multilib selection. */
6159 const char *const *q
= multilib_raw
;
6162 obstack_init (&multilib_obstack
);
6163 while ((p
= *q
++) != (char *) 0)
6164 obstack_grow (&multilib_obstack
, p
, strlen (p
));
6166 obstack_1grow (&multilib_obstack
, 0);
6167 multilib_select
= XOBFINISH (&multilib_obstack
, const char *);
6169 q
= multilib_matches_raw
;
6170 while ((p
= *q
++) != (char *) 0)
6171 obstack_grow (&multilib_obstack
, p
, strlen (p
));
6173 obstack_1grow (&multilib_obstack
, 0);
6174 multilib_matches
= XOBFINISH (&multilib_obstack
, const char *);
6176 q
= multilib_exclusions_raw
;
6177 while ((p
= *q
++) != (char *) 0)
6178 obstack_grow (&multilib_obstack
, p
, strlen (p
));
6180 obstack_1grow (&multilib_obstack
, 0);
6181 multilib_exclusions
= XOBFINISH (&multilib_obstack
, const char *);
6184 for (i
= 0; i
< ARRAY_SIZE (multilib_defaults_raw
); i
++)
6187 obstack_1grow (&multilib_obstack
, ' ');
6188 obstack_grow (&multilib_obstack
,
6189 multilib_defaults_raw
[i
],
6190 strlen (multilib_defaults_raw
[i
]));
6194 obstack_1grow (&multilib_obstack
, 0);
6195 multilib_defaults
= XOBFINISH (&multilib_obstack
, const char *);
6198 #ifdef INIT_ENVIRONMENT
6199 /* Set up any other necessary machine specific environment variables. */
6200 xputenv (INIT_ENVIRONMENT
);
6203 /* Make a table of what switches there are (switches, n_switches).
6204 Make a table of specified input files (infiles, n_infiles).
6205 Decode switches that are handled locally. */
6207 process_command (decoded_options_count
, decoded_options
);
6209 /* Initialize the vector of specs to just the default.
6210 This means one element containing 0s, as a terminator. */
6212 compilers
= XNEWVAR (struct compiler
, sizeof default_compilers
);
6213 memcpy (compilers
, default_compilers
, sizeof default_compilers
);
6214 n_compilers
= n_default_compilers
;
6216 /* Read specs from a file if there is one. */
6218 machine_suffix
= concat (spec_machine
, dir_separator_str
,
6219 spec_version
, dir_separator_str
, NULL
);
6220 just_machine_suffix
= concat (spec_machine
, dir_separator_str
, NULL
);
6222 specs_file
= find_a_file (&startfile_prefixes
, "specs", R_OK
, true);
6223 /* Read the specs file unless it is a default one. */
6224 if (specs_file
!= 0 && strcmp (specs_file
, "specs"))
6225 read_specs (specs_file
, TRUE
);
6229 /* We need to check standard_exec_prefix/just_machine_suffix/specs
6230 for any override of as, ld and libraries. */
6231 specs_file
= (char *) alloca (strlen (standard_exec_prefix
)
6232 + strlen (just_machine_suffix
) + sizeof ("specs"));
6234 strcpy (specs_file
, standard_exec_prefix
);
6235 strcat (specs_file
, just_machine_suffix
);
6236 strcat (specs_file
, "specs");
6237 if (access (specs_file
, R_OK
) == 0)
6238 read_specs (specs_file
, TRUE
);
6240 /* Process any configure-time defaults specified for the command line
6241 options, via OPTION_DEFAULT_SPECS. */
6242 for (i
= 0; i
< ARRAY_SIZE (option_default_specs
); i
++)
6243 do_option_spec (option_default_specs
[i
].name
,
6244 option_default_specs
[i
].spec
);
6246 /* Process DRIVER_SELF_SPECS, adding any new options to the end
6247 of the command line. */
6249 for (i
= 0; i
< ARRAY_SIZE (driver_self_specs
); i
++)
6250 do_self_spec (driver_self_specs
[i
]);
6254 enum save_temps save
;
6256 if (!compare_debug_second
)
6258 n_switches_debug_check
[1] = n_switches
;
6259 n_switches_alloc_debug_check
[1] = n_switches_alloc
;
6260 switches_debug_check
[1] = XDUPVEC (struct switchstr
, switches
,
6263 do_self_spec ("%:compare-debug-self-opt()");
6264 n_switches_debug_check
[0] = n_switches
;
6265 n_switches_alloc_debug_check
[0] = n_switches_alloc
;
6266 switches_debug_check
[0] = switches
;
6268 n_switches
= n_switches_debug_check
[1];
6269 n_switches_alloc
= n_switches_alloc_debug_check
[1];
6270 switches
= switches_debug_check
[1];
6273 /* Avoid crash when computing %j in this early. */
6274 save
= save_temps_flag
;
6275 save_temps_flag
= SAVE_TEMPS_NONE
;
6277 compare_debug
= -compare_debug
;
6278 do_self_spec ("%:compare-debug-self-opt()");
6280 save_temps_flag
= save
;
6282 if (!compare_debug_second
)
6284 n_switches_debug_check
[1] = n_switches
;
6285 n_switches_alloc_debug_check
[1] = n_switches_alloc
;
6286 switches_debug_check
[1] = switches
;
6287 compare_debug
= -compare_debug
;
6288 n_switches
= n_switches_debug_check
[0];
6289 n_switches_alloc
= n_switches_debug_check
[0];
6290 switches
= switches_debug_check
[0];
6294 /* If not cross-compiling, look for executables in the standard
6296 if (*cross_compile
== '0')
6298 if (*md_exec_prefix
)
6300 add_prefix (&exec_prefixes
, md_exec_prefix
, "GCC",
6301 PREFIX_PRIORITY_LAST
, 0, 0);
6305 /* Process sysroot_suffix_spec. */
6306 if (*sysroot_suffix_spec
!= 0
6307 && do_spec_2 (sysroot_suffix_spec
) == 0)
6309 if (VEC_length (const_char_p
, argbuf
) > 1)
6310 error ("spec failure: more than one arg to SYSROOT_SUFFIX_SPEC");
6311 else if (VEC_length (const_char_p
, argbuf
) == 1)
6312 target_sysroot_suffix
= xstrdup (VEC_last (const_char_p
, argbuf
));
6315 #ifdef HAVE_LD_SYSROOT
6316 /* Pass the --sysroot option to the linker, if it supports that. If
6317 there is a sysroot_suffix_spec, it has already been processed by
6318 this point, so target_system_root really is the system root we
6320 if (target_system_root
)
6322 obstack_grow (&obstack
, "%(sysroot_spec) ", strlen ("%(sysroot_spec) "));
6323 obstack_grow0 (&obstack
, link_spec
, strlen (link_spec
));
6324 set_spec ("link", XOBFINISH (&obstack
, const char *));
6328 /* Process sysroot_hdrs_suffix_spec. */
6329 if (*sysroot_hdrs_suffix_spec
!= 0
6330 && do_spec_2 (sysroot_hdrs_suffix_spec
) == 0)
6332 if (VEC_length (const_char_p
, argbuf
) > 1)
6333 error ("spec failure: more than one arg to SYSROOT_HEADERS_SUFFIX_SPEC");
6334 else if (VEC_length (const_char_p
, argbuf
) == 1)
6335 target_sysroot_hdrs_suffix
= xstrdup (VEC_last (const_char_p
, argbuf
));
6338 /* Look for startfiles in the standard places. */
6339 if (*startfile_prefix_spec
!= 0
6340 && do_spec_2 (startfile_prefix_spec
) == 0
6341 && do_spec_1 (" ", 0, NULL
) == 0)
6345 FOR_EACH_VEC_ELT (const_char_p
, argbuf
, ndx
, arg
)
6346 add_sysrooted_prefix (&startfile_prefixes
, arg
, "BINUTILS",
6347 PREFIX_PRIORITY_LAST
, 0, 1);
6349 /* We should eventually get rid of all these and stick to
6350 startfile_prefix_spec exclusively. */
6351 else if (*cross_compile
== '0' || target_system_root
)
6353 if (*md_startfile_prefix
)
6354 add_sysrooted_prefix (&startfile_prefixes
, md_startfile_prefix
,
6355 "GCC", PREFIX_PRIORITY_LAST
, 0, 1);
6357 if (*md_startfile_prefix_1
)
6358 add_sysrooted_prefix (&startfile_prefixes
, md_startfile_prefix_1
,
6359 "GCC", PREFIX_PRIORITY_LAST
, 0, 1);
6361 /* If standard_startfile_prefix is relative, base it on
6362 standard_exec_prefix. This lets us move the installed tree
6363 as a unit. If GCC_EXEC_PREFIX is defined, base
6364 standard_startfile_prefix on that as well.
6366 If the prefix is relative, only search it for native compilers;
6367 otherwise we will search a directory containing host libraries. */
6368 if (IS_ABSOLUTE_PATH (standard_startfile_prefix
))
6369 add_sysrooted_prefix (&startfile_prefixes
,
6370 standard_startfile_prefix
, "BINUTILS",
6371 PREFIX_PRIORITY_LAST
, 0, 1);
6372 else if (*cross_compile
== '0')
6374 add_prefix (&startfile_prefixes
,
6375 concat (gcc_exec_prefix
6376 ? gcc_exec_prefix
: standard_exec_prefix
,
6378 standard_startfile_prefix
, NULL
),
6379 NULL
, PREFIX_PRIORITY_LAST
, 0, 1);
6382 /* Sysrooted prefixes are relocated because target_system_root is
6383 also relocated by gcc_exec_prefix. */
6384 if (*standard_startfile_prefix_1
)
6385 add_sysrooted_prefix (&startfile_prefixes
,
6386 standard_startfile_prefix_1
, "BINUTILS",
6387 PREFIX_PRIORITY_LAST
, 0, 1);
6388 if (*standard_startfile_prefix_2
)
6389 add_sysrooted_prefix (&startfile_prefixes
,
6390 standard_startfile_prefix_2
, "BINUTILS",
6391 PREFIX_PRIORITY_LAST
, 0, 1);
6394 /* Process any user specified specs in the order given on the command
6396 for (uptr
= user_specs_head
; uptr
; uptr
= uptr
->next
)
6398 char *filename
= find_a_file (&startfile_prefixes
, uptr
->filename
,
6400 read_specs (filename
? filename
: uptr
->filename
, FALSE
);
6403 /* If we have a GCC_EXEC_PREFIX envvar, modify it for cpp's sake. */
6404 if (gcc_exec_prefix
)
6405 gcc_exec_prefix
= concat (gcc_exec_prefix
, spec_machine
, dir_separator_str
,
6406 spec_version
, dir_separator_str
, NULL
);
6408 /* Now we have the specs.
6409 Set the `valid' bits for switches that match anything in any spec. */
6411 validate_all_switches ();
6413 /* Now that we have the switches and the specs, set
6414 the subdirectory based on the options. */
6415 set_multilib_dir ();
6417 /* Set up to remember the pathname of gcc and any options
6418 needed for collect. We use argv[0] instead of progname because
6419 we need the complete pathname. */
6420 obstack_init (&collect_obstack
);
6421 obstack_grow (&collect_obstack
, "COLLECT_GCC=", sizeof ("COLLECT_GCC=") - 1);
6422 obstack_grow (&collect_obstack
, argv
[0], strlen (argv
[0]) + 1);
6423 xputenv (XOBFINISH (&collect_obstack
, char *));
6425 /* Set up to remember the pathname of the lto wrapper. */
6427 lto_wrapper_file
= find_a_file (&exec_prefixes
, "lto-wrapper", X_OK
, false);
6428 if (lto_wrapper_file
)
6430 lto_wrapper_spec
= lto_wrapper_file
;
6431 obstack_init (&collect_obstack
);
6432 obstack_grow (&collect_obstack
, "COLLECT_LTO_WRAPPER=",
6433 sizeof ("COLLECT_LTO_WRAPPER=") - 1);
6434 obstack_grow (&collect_obstack
, lto_wrapper_spec
,
6435 strlen (lto_wrapper_spec
) + 1);
6436 xputenv (XOBFINISH (&collect_obstack
, char *));
6439 /* Warn about any switches that no pass was interested in. */
6441 for (i
= 0; (int) i
< n_switches
; i
++)
6442 if (! switches
[i
].validated
)
6443 error ("unrecognized option %<-%s%>", switches
[i
].part1
);
6445 /* Obey some of the options. */
6447 if (print_search_dirs
)
6449 printf (_("install: %s%s\n"),
6450 gcc_exec_prefix
? gcc_exec_prefix
: standard_exec_prefix
,
6451 gcc_exec_prefix
? "" : machine_suffix
);
6452 printf (_("programs: %s\n"),
6453 build_search_list (&exec_prefixes
, "", false, false));
6454 printf (_("libraries: %s\n"),
6455 build_search_list (&startfile_prefixes
, "", false, true));
6459 if (print_file_name
)
6461 printf ("%s\n", find_file (print_file_name
));
6465 if (print_prog_name
)
6467 char *newname
= find_a_file (&exec_prefixes
, print_prog_name
, X_OK
, 0);
6468 printf ("%s\n", (newname
? newname
: print_prog_name
));
6472 if (print_multi_lib
)
6474 print_multilib_info ();
6478 if (print_multi_directory
)
6480 if (multilib_dir
== NULL
)
6483 printf ("%s\n", multilib_dir
);
6489 if (target_system_root
)
6491 if (target_sysroot_suffix
)
6492 printf ("%s%s\n", target_system_root
, target_sysroot_suffix
);
6494 printf ("%s\n", target_system_root
);
6499 if (print_multi_os_directory
)
6501 if (multilib_os_dir
== NULL
)
6504 printf ("%s\n", multilib_os_dir
);
6508 if (print_sysroot_headers_suffix
)
6510 if (*sysroot_hdrs_suffix_spec
)
6512 printf("%s\n", (target_sysroot_hdrs_suffix
6513 ? target_sysroot_hdrs_suffix
6518 /* The error status indicates that only one set of fixed
6519 headers should be built. */
6520 fatal_error ("not configured with sysroot headers suffix");
6523 if (print_help_list
)
6529 printf (_("\nFor bug reporting instructions, please see:\n"));
6530 printf ("%s.\n", bug_report_url
);
6535 /* We do not exit here. Instead we have created a fake input file
6536 called 'help-dummy' which needs to be compiled, and we pass this
6537 on the various sub-processes, along with the --help switch.
6538 Ensure their output appears after ours. */
6539 fputc ('\n', stdout
);
6545 printf (_("%s %s%s\n"), progname
, pkgversion_string
,
6547 printf ("Copyright %s 2011 Free Software Foundation, Inc.\n",
6549 fputs (_("This is free software; see the source for copying conditions. There is NO\n\
6550 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\n"),
6555 /* We do not exit here. We use the same mechanism of --help to print
6556 the version of the sub-processes. */
6557 fputc ('\n', stdout
);
6566 fnotice (stderr
, "Target: %s\n", spec_machine
);
6567 fnotice (stderr
, "Configured with: %s\n", configuration_arguments
);
6569 #ifdef THREAD_MODEL_SPEC
6570 /* We could have defined THREAD_MODEL_SPEC to "%*" by default,
6571 but there's no point in doing all this processing just to get
6572 thread_model back. */
6573 obstack_init (&obstack
);
6574 do_spec_1 (THREAD_MODEL_SPEC
, 0, thread_model
);
6575 obstack_1grow (&obstack
, '\0');
6576 thrmod
= XOBFINISH (&obstack
, const char *);
6578 thrmod
= thread_model
;
6581 fnotice (stderr
, "Thread model: %s\n", thrmod
);
6583 /* compiler_version is truncated at the first space when initialized
6584 from version string, so truncate version_string at the first space
6585 before comparing. */
6586 for (n
= 0; version_string
[n
]; n
++)
6587 if (version_string
[n
] == ' ')
6590 if (! strncmp (version_string
, compiler_version
, n
)
6591 && compiler_version
[n
] == 0)
6592 fnotice (stderr
, "gcc version %s %s\n", version_string
,
6595 fnotice (stderr
, "gcc driver version %s %sexecuting gcc version %s\n",
6596 version_string
, pkgversion_string
, compiler_version
);
6602 if (n_infiles
== added_libraries
)
6603 fatal_error ("no input files");
6608 /* Make a place to record the compiler output file names
6609 that correspond to the input files. */
6612 i
+= lang_specific_extra_outfiles
;
6613 outfiles
= XCNEWVEC (const char *, i
);
6615 /* Record which files were specified explicitly as link input. */
6617 explicit_link_files
= XCNEWVEC (char, n_infiles
);
6619 combine_inputs
= have_o
|| flag_wpa
;
6621 for (i
= 0; (int) i
< n_infiles
; i
++)
6623 const char *name
= infiles
[i
].name
;
6624 struct compiler
*compiler
= lookup_compiler (name
,
6626 infiles
[i
].language
);
6628 if (compiler
&& !(compiler
->combinable
))
6629 combine_inputs
= false;
6631 if (lang_n_infiles
> 0 && compiler
!= input_file_compiler
6632 && infiles
[i
].language
&& infiles
[i
].language
[0] != '*')
6633 infiles
[i
].incompiler
= compiler
;
6637 input_file_compiler
= compiler
;
6638 infiles
[i
].incompiler
= compiler
;
6642 /* Since there is no compiler for this input file, assume it is a
6644 explicit_link_files
[i
] = 1;
6645 infiles
[i
].incompiler
= NULL
;
6647 infiles
[i
].compiled
= false;
6648 infiles
[i
].preprocessed
= false;
6651 if (!combine_inputs
&& have_c
&& have_o
&& lang_n_infiles
> 1)
6652 fatal_error ("cannot specify -o with -c, -S or -E with multiple files");
6654 for (i
= 0; (int) i
< n_infiles
; i
++)
6656 int this_file_error
= 0;
6658 /* Tell do_spec what to substitute for %i. */
6660 input_file_number
= i
;
6661 set_input (infiles
[i
].name
);
6663 if (infiles
[i
].compiled
)
6666 /* Use the same thing in %o, unless cp->spec says otherwise. */
6668 outfiles
[i
] = gcc_input_filename
;
6670 /* Figure out which compiler from the file's suffix. */
6673 = lookup_compiler (infiles
[i
].name
, input_filename_length
,
6674 infiles
[i
].language
);
6676 if (input_file_compiler
)
6678 /* Ok, we found an applicable compiler. Run its spec. */
6680 if (input_file_compiler
->spec
[0] == '#')
6682 error ("%s: %s compiler not installed on this system",
6683 gcc_input_filename
, &input_file_compiler
->spec
[1]);
6684 this_file_error
= 1;
6690 if (debug_check_temp_file
[0])
6691 free (debug_check_temp_file
[0]);
6692 debug_check_temp_file
[0] = NULL
;
6694 if (debug_check_temp_file
[1])
6695 free (debug_check_temp_file
[1]);
6696 debug_check_temp_file
[1] = NULL
;
6699 value
= do_spec (input_file_compiler
->spec
);
6700 infiles
[i
].compiled
= true;
6702 this_file_error
= 1;
6703 else if (compare_debug
&& debug_check_temp_file
[0])
6706 inform (0, "recompiling with -fcompare-debug");
6708 compare_debug
= -compare_debug
;
6709 n_switches
= n_switches_debug_check
[1];
6710 n_switches_alloc
= n_switches_alloc_debug_check
[1];
6711 switches
= switches_debug_check
[1];
6713 value
= do_spec (input_file_compiler
->spec
);
6715 compare_debug
= -compare_debug
;
6716 n_switches
= n_switches_debug_check
[0];
6717 n_switches_alloc
= n_switches_alloc_debug_check
[0];
6718 switches
= switches_debug_check
[0];
6722 error ("during -fcompare-debug recompilation");
6723 this_file_error
= 1;
6726 gcc_assert (debug_check_temp_file
[1]
6727 && strcmp (debug_check_temp_file
[0],
6728 debug_check_temp_file
[1]));
6731 inform (0, "comparing final insns dumps");
6733 if (compare_files (debug_check_temp_file
))
6734 this_file_error
= 1;
6739 if (debug_check_temp_file
[0])
6740 free (debug_check_temp_file
[0]);
6741 debug_check_temp_file
[0] = NULL
;
6743 if (debug_check_temp_file
[1])
6744 free (debug_check_temp_file
[1]);
6745 debug_check_temp_file
[1] = NULL
;
6750 /* If this file's name does not contain a recognized suffix,
6751 record it as explicit linker input. */
6754 explicit_link_files
[i
] = 1;
6756 /* Clear the delete-on-failure queue, deleting the files in it
6757 if this compilation failed. */
6759 if (this_file_error
)
6761 delete_failure_queue ();
6764 /* If this compilation succeeded, don't delete those files later. */
6765 clear_failure_queue ();
6768 /* Reset the input file name to the first compile/object file name, for use
6769 with %b in LINK_SPEC. We use the first input file that we can find
6770 a compiler to compile it instead of using infiles.language since for
6771 languages other than C we use aliases that we then lookup later. */
6776 for (i
= 0; i
< n_infiles
; i
++)
6777 if (infiles
[i
].incompiler
6778 || (infiles
[i
].language
&& infiles
[i
].language
[0] != '*'))
6780 set_input (infiles
[i
].name
);
6787 /* Make sure INPUT_FILE_NUMBER points to first available open
6789 input_file_number
= n_infiles
;
6790 if (lang_specific_pre_link ())
6794 /* Determine if there are any linker input files. */
6795 num_linker_inputs
= 0;
6796 for (i
= 0; (int) i
< n_infiles
; i
++)
6797 if (explicit_link_files
[i
] || outfiles
[i
] != NULL
)
6798 num_linker_inputs
++;
6800 /* Run ld to link all the compiler output files. */
6802 if (num_linker_inputs
> 0 && !seen_error () && print_subprocess_help
< 2)
6804 int tmp
= execution_count
;
6805 #ifdef HAVE_LTO_PLUGIN
6806 const char *fno_use_linker_plugin
= "fno-use-linker-plugin";
6808 const char *fuse_linker_plugin
= "fuse-linker-plugin";
6811 /* We'll use ld if we can't find collect2. */
6812 if (! strcmp (linker_name_spec
, "collect2"))
6814 char *s
= find_a_file (&exec_prefixes
, "collect2", X_OK
, false);
6816 linker_name_spec
= "ld";
6819 #ifdef HAVE_LTO_PLUGIN
6820 if (!switch_matches (fno_use_linker_plugin
,
6821 fno_use_linker_plugin
+ strlen (fno_use_linker_plugin
), 0))
6823 if (switch_matches (fuse_linker_plugin
,
6824 fuse_linker_plugin
+ strlen (fuse_linker_plugin
), 0))
6827 linker_plugin_file_spec
= find_a_file (&exec_prefixes
,
6828 LTOPLUGINSONAME
, R_OK
,
6830 if (!linker_plugin_file_spec
)
6831 fatal_error ("-fuse-linker-plugin, but " LTOPLUGINSONAME
" not found");
6833 lto_gcc_spec
= argv
[0];
6835 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
6837 putenv_from_prefixes (&exec_prefixes
, "COMPILER_PATH", false);
6838 putenv_from_prefixes (&startfile_prefixes
, LIBRARY_PATH_ENV
, true);
6840 if (print_subprocess_help
== 1)
6842 printf (_("\nLinker options\n==============\n\n"));
6843 printf (_("Use \"-Wl,OPTION\" to pass \"OPTION\""
6844 " to the linker.\n\n"));
6847 value
= do_spec (link_command_spec
);
6850 linker_was_run
= (tmp
!= execution_count
);
6853 /* If options said don't run linker,
6854 complain about input files to be given to the linker. */
6856 if (! linker_was_run
&& !seen_error ())
6857 for (i
= 0; (int) i
< n_infiles
; i
++)
6858 if (explicit_link_files
[i
]
6859 && !(infiles
[i
].language
&& infiles
[i
].language
[0] == '*'))
6860 warning (0, "%s: linker input file unused because linking not done",
6863 /* Delete some or all of the temporary files we made. */
6866 delete_failure_queue ();
6867 delete_temp_files ();
6869 if (print_help_list
)
6871 printf (("\nFor bug reporting instructions, please see:\n"));
6872 printf ("%s\n", bug_report_url
);
6876 return (signal_count
!= 0 ? 2
6877 : seen_error () ? (pass_exit_codes
? greatest_status
: 1)
6881 /* Find the proper compilation spec for the file name NAME,
6882 whose length is LENGTH. LANGUAGE is the specified language,
6883 or 0 if this file is to be passed to the linker. */
6885 static struct compiler
*
6886 lookup_compiler (const char *name
, size_t length
, const char *language
)
6888 struct compiler
*cp
;
6890 /* If this was specified by the user to be a linker input, indicate that. */
6891 if (language
!= 0 && language
[0] == '*')
6894 /* Otherwise, look for the language, if one is spec'd. */
6897 for (cp
= compilers
+ n_compilers
- 1; cp
>= compilers
; cp
--)
6898 if (cp
->suffix
[0] == '@' && !strcmp (cp
->suffix
+ 1, language
))
6901 error ("language %s not recognized", language
);
6905 /* Look for a suffix. */
6906 for (cp
= compilers
+ n_compilers
- 1; cp
>= compilers
; cp
--)
6908 if (/* The suffix `-' matches only the file name `-'. */
6909 (!strcmp (cp
->suffix
, "-") && !strcmp (name
, "-"))
6910 || (strlen (cp
->suffix
) < length
6911 /* See if the suffix matches the end of NAME. */
6912 && !strcmp (cp
->suffix
,
6913 name
+ length
- strlen (cp
->suffix
))
6918 #if defined (OS2) ||defined (HAVE_DOS_BASED_FILE_SYSTEM)
6919 /* Look again, but case-insensitively this time. */
6921 for (cp
= compilers
+ n_compilers
- 1; cp
>= compilers
; cp
--)
6923 if (/* The suffix `-' matches only the file name `-'. */
6924 (!strcmp (cp
->suffix
, "-") && !strcmp (name
, "-"))
6925 || (strlen (cp
->suffix
) < length
6926 /* See if the suffix matches the end of NAME. */
6927 && ((!strcmp (cp
->suffix
,
6928 name
+ length
- strlen (cp
->suffix
))
6929 || !strpbrk (cp
->suffix
, "ABCDEFGHIJKLMNOPQRSTUVWXYZ"))
6930 && !strcasecmp (cp
->suffix
,
6931 name
+ length
- strlen (cp
->suffix
)))
6937 if (cp
>= compilers
)
6939 if (cp
->spec
[0] != '@')
6940 /* A non-alias entry: return it. */
6943 /* An alias entry maps a suffix to a language.
6944 Search for the language; pass 0 for NAME and LENGTH
6945 to avoid infinite recursion if language not found. */
6946 return lookup_compiler (NULL
, 0, cp
->spec
+ 1);
6952 save_string (const char *s
, int len
)
6954 char *result
= XNEWVEC (char, len
+ 1);
6956 memcpy (result
, s
, len
);
6962 pfatal_with_name (const char *name
)
6964 perror_with_name (name
);
6965 delete_temp_files ();
6970 perror_with_name (const char *name
)
6972 error ("%s: %m", name
);
6976 validate_switches_from_spec (const char *spec
)
6978 const char *p
= spec
;
6981 if (c
== '%' && (*p
== '{' || *p
== '<' || (*p
== 'W' && *++p
== '{')))
6982 /* We have a switch spec. */
6983 p
= validate_switches (p
+ 1);
6987 validate_all_switches (void)
6989 struct compiler
*comp
;
6990 struct spec_list
*spec
;
6992 for (comp
= compilers
; comp
->spec
; comp
++)
6993 validate_switches_from_spec (comp
->spec
);
6995 /* Look through the linked list of specs read from the specs file. */
6996 for (spec
= specs
; spec
; spec
= spec
->next
)
6997 validate_switches_from_spec (*spec
->ptr_spec
);
6999 validate_switches_from_spec (link_command_spec
);
7002 /* Look at the switch-name that comes after START
7003 and mark as valid all supplied switches that match it. */
7006 validate_switches (const char *start
)
7008 const char *p
= start
;
7012 bool suffix
= false;
7013 bool starred
= false;
7015 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
7024 if (*p
== '.' || *p
== ',')
7028 while (ISIDNUM (*p
) || *p
== '-' || *p
== '+' || *p
== '='
7029 || *p
== ',' || *p
== '.' || *p
== '@')
7034 starred
= true, p
++;
7040 /* Mark all matching switches as valid. */
7041 for (i
= 0; i
< n_switches
; i
++)
7042 if (!strncmp (switches
[i
].part1
, atom
, len
)
7043 && (starred
|| switches
[i
].part1
[len
] == 0))
7044 switches
[i
].validated
= 1;
7048 if (*p
&& (p
[-1] == '|' || p
[-1] == '&'))
7051 if (*p
&& p
[-1] == ':')
7053 while (*p
&& *p
!= ';' && *p
!= '}')
7058 if (*p
== '{' || *p
== '<')
7059 p
= validate_switches (p
+1);
7060 else if (p
[0] == 'W' && p
[1] == '{')
7061 p
= validate_switches (p
+2);
7068 if (*p
&& p
[-1] == ';')
7082 static struct mdswitchstr
*mdswitches
;
7083 static int n_mdswitches
;
7085 /* Check whether a particular argument was used. The first time we
7086 canonicalize the switches to keep only the ones we care about. */
7089 used_arg (const char *p
, int len
)
7094 const char *replace
;
7099 static struct mswitchstr
*mswitches
;
7100 static int n_mswitches
;
7105 struct mswitchstr
*matches
;
7109 /* Break multilib_matches into the component strings of string
7110 and replacement string. */
7111 for (q
= multilib_matches
; *q
!= '\0'; q
++)
7116 = (struct mswitchstr
*) alloca ((sizeof (struct mswitchstr
)) * cnt
);
7118 q
= multilib_matches
;
7127 fatal_error ("multilib spec %qs is invalid",
7132 matches
[i
].len
= q
- matches
[i
].str
;
7134 matches
[i
].replace
= ++q
;
7135 while (*q
!= ';' && *q
!= '\0')
7138 goto invalid_matches
;
7141 matches
[i
].rep_len
= q
- matches
[i
].replace
;
7147 /* Now build a list of the replacement string for switches that we care
7148 about. Make sure we allocate at least one entry. This prevents
7149 xmalloc from calling fatal, and prevents us from re-executing this
7152 = XNEWVEC (struct mswitchstr
, n_mdswitches
+ (n_switches
? n_switches
: 1));
7153 for (i
= 0; i
< n_switches
; i
++)
7154 if ((switches
[i
].live_cond
& SWITCH_IGNORE
) == 0)
7156 int xlen
= strlen (switches
[i
].part1
);
7157 for (j
= 0; j
< cnt
; j
++)
7158 if (xlen
== matches
[j
].len
7159 && ! strncmp (switches
[i
].part1
, matches
[j
].str
, xlen
))
7161 mswitches
[n_mswitches
].str
= matches
[j
].replace
;
7162 mswitches
[n_mswitches
].len
= matches
[j
].rep_len
;
7163 mswitches
[n_mswitches
].replace
= (char *) 0;
7164 mswitches
[n_mswitches
].rep_len
= 0;
7170 /* Add MULTILIB_DEFAULTS switches too, as long as they were not present
7171 on the command line nor any options mutually incompatible with
7173 for (i
= 0; i
< n_mdswitches
; i
++)
7177 for (q
= multilib_options
; *q
!= '\0'; q
++)
7183 while (strncmp (q
, mdswitches
[i
].str
, mdswitches
[i
].len
) != 0
7184 || strchr (" /", q
[mdswitches
[i
].len
]) == NULL
)
7186 while (*q
!= ' ' && *q
!= '/' && *q
!= '\0')
7193 if (*q
!= ' ' && *q
!= '\0')
7195 while (*r
!= ' ' && *r
!= '\0')
7198 while (*q
!= ' ' && *q
!= '/' && *q
!= '\0')
7201 if (used_arg (r
, q
- r
))
7206 mswitches
[n_mswitches
].str
= mdswitches
[i
].str
;
7207 mswitches
[n_mswitches
].len
= mdswitches
[i
].len
;
7208 mswitches
[n_mswitches
].replace
= (char *) 0;
7209 mswitches
[n_mswitches
].rep_len
= 0;
7222 for (i
= 0; i
< n_mswitches
; i
++)
7223 if (len
== mswitches
[i
].len
&& ! strncmp (p
, mswitches
[i
].str
, len
))
7230 default_arg (const char *p
, int len
)
7234 for (i
= 0; i
< n_mdswitches
; i
++)
7235 if (len
== mdswitches
[i
].len
&& ! strncmp (p
, mdswitches
[i
].str
, len
))
7241 /* Work out the subdirectory to use based on the options. The format of
7242 multilib_select is a list of elements. Each element is a subdirectory
7243 name followed by a list of options followed by a semicolon. The format
7244 of multilib_exclusions is the same, but without the preceding
7245 directory. First gcc will check the exclusions, if none of the options
7246 beginning with an exclamation point are present, and all of the other
7247 options are present, then we will ignore this completely. Passing
7248 that, gcc will consider each multilib_select in turn using the same
7249 rules for matching the options. If a match is found, that subdirectory
7253 set_multilib_dir (void)
7256 unsigned int this_path_len
;
7257 const char *this_path
, *this_arg
;
7258 const char *start
, *end
;
7260 int ok
, ndfltok
, first
;
7263 start
= multilib_defaults
;
7264 while (*start
== ' ' || *start
== '\t')
7266 while (*start
!= '\0')
7269 while (*start
!= ' ' && *start
!= '\t' && *start
!= '\0')
7271 while (*start
== ' ' || *start
== '\t')
7279 mdswitches
= XNEWVEC (struct mdswitchstr
, n_mdswitches
);
7280 for (start
= multilib_defaults
; *start
!= '\0'; start
= end
+ 1)
7282 while (*start
== ' ' || *start
== '\t')
7288 for (end
= start
+ 1;
7289 *end
!= ' ' && *end
!= '\t' && *end
!= '\0'; end
++)
7292 obstack_grow (&multilib_obstack
, start
, end
- start
);
7293 obstack_1grow (&multilib_obstack
, 0);
7294 mdswitches
[i
].str
= XOBFINISH (&multilib_obstack
, const char *);
7295 mdswitches
[i
++].len
= end
- start
;
7302 p
= multilib_exclusions
;
7305 /* Ignore newlines. */
7312 /* Check the arguments. */
7319 fatal_error ("multilib exclusions %qs is invalid",
7320 multilib_exclusions
);
7330 while (*p
!= ' ' && *p
!= ';')
7333 goto invalid_exclusions
;
7337 if (*this_arg
!= '!')
7345 ok
= used_arg (this_arg
, p
- this_arg
);
7360 p
= multilib_select
;
7363 /* Ignore newlines. */
7370 /* Get the initial path. */
7377 fatal_error ("multilib select %qs is invalid",
7382 this_path_len
= p
- this_path
;
7384 /* Check the arguments. */
7391 goto invalid_select
;
7400 while (*p
!= ' ' && *p
!= ';')
7403 goto invalid_select
;
7407 if (*this_arg
!= '!')
7415 /* If this is a default argument, we can just ignore it.
7416 This is true even if this_arg begins with '!'. Beginning
7417 with '!' does not mean that this argument is necessarily
7418 inappropriate for this library: it merely means that
7419 there is a more specific library which uses this
7420 argument. If this argument is a default, we need not
7421 consider that more specific library. */
7422 ok
= used_arg (this_arg
, p
- this_arg
);
7429 if (default_arg (this_arg
, p
- this_arg
))
7438 if (this_path_len
!= 1
7439 || this_path
[0] != '.')
7441 char *new_multilib_dir
= XNEWVEC (char, this_path_len
+ 1);
7444 strncpy (new_multilib_dir
, this_path
, this_path_len
);
7445 new_multilib_dir
[this_path_len
] = '\0';
7446 q
= strchr (new_multilib_dir
, ':');
7449 multilib_dir
= new_multilib_dir
;
7456 const char *q
= this_path
, *end
= this_path
+ this_path_len
;
7458 while (q
< end
&& *q
!= ':')
7462 char *new_multilib_os_dir
= XNEWVEC (char, end
- q
);
7463 memcpy (new_multilib_os_dir
, q
+ 1, end
- q
- 1);
7464 new_multilib_os_dir
[end
- q
- 1] = '\0';
7465 multilib_os_dir
= new_multilib_os_dir
;
7473 if (multilib_dir
== NULL
&& multilib_os_dir
!= NULL
7474 && strcmp (multilib_os_dir
, ".") == 0)
7476 free (CONST_CAST (char *, multilib_os_dir
));
7477 multilib_os_dir
= NULL
;
7479 else if (multilib_dir
!= NULL
&& multilib_os_dir
== NULL
)
7480 multilib_os_dir
= multilib_dir
;
7483 /* Print out the multiple library subdirectory selection
7484 information. This prints out a series of lines. Each line looks
7485 like SUBDIRECTORY;@OPTION@OPTION, with as many options as is
7486 required. Only the desired options are printed out, the negative
7487 matches. The options are print without a leading dash. There are
7488 no spaces to make it easy to use the information in the shell.
7489 Each subdirectory is printed only once. This assumes the ordering
7490 generated by the genmultilib script. Also, we leave out ones that match
7494 print_multilib_info (void)
7496 const char *p
= multilib_select
;
7497 const char *last_path
= 0, *this_path
;
7499 unsigned int last_path_len
= 0;
7504 /* Ignore newlines. */
7511 /* Get the initial path. */
7518 fatal_error ("multilib select %qs is invalid", multilib_select
);
7524 /* When --disable-multilib was used but target defines
7525 MULTILIB_OSDIRNAMES, entries starting with .: are there just
7526 to find multilib_os_dir, so skip them from output. */
7527 if (this_path
[0] == '.' && this_path
[1] == ':')
7530 /* Check for matches with the multilib_exclusions. We don't bother
7531 with the '!' in either list. If any of the exclusion rules match
7532 all of its options with the select rule, we skip it. */
7534 const char *e
= multilib_exclusions
;
7535 const char *this_arg
;
7540 /* Ignore newlines. */
7547 /* Check the arguments. */
7556 fatal_error ("multilib exclusion %qs is invalid",
7557 multilib_exclusions
);
7568 while (*e
!= ' ' && *e
!= ';')
7571 goto invalid_exclusion
;
7579 int len
= e
- this_arg
;
7582 goto invalid_select
;
7586 while (*q
!= ' ' && *q
!= ';')
7589 goto invalid_select
;
7593 if (! strncmp (arg
, this_arg
,
7594 (len
< q
- arg
) ? q
- arg
: len
)
7595 || default_arg (this_arg
, e
- this_arg
))
7625 /* If this is a duplicate, skip it. */
7626 skip
= (last_path
!= 0
7627 && (unsigned int) (p
- this_path
) == last_path_len
7628 && ! strncmp (last_path
, this_path
, last_path_len
));
7630 last_path
= this_path
;
7631 last_path_len
= p
- this_path
;
7634 /* If this directory requires any default arguments, we can skip
7635 it. We will already have printed a directory identical to
7636 this one which does not require that default argument. */
7647 goto invalid_select
;
7654 while (*q
!= ' ' && *q
!= ';')
7657 goto invalid_select
;
7662 && default_arg (arg
, q
- arg
))
7677 for (p1
= last_path
; p1
< p
&& *p1
!= ':'; p1
++)
7688 goto invalid_select
;
7696 use_arg
= *p
!= '!';
7701 while (*p
!= ' ' && *p
!= ';')
7704 goto invalid_select
;
7716 /* If there are extra options, print them now. */
7717 if (multilib_extra
&& *multilib_extra
)
7719 int print_at
= TRUE
;
7722 for (q
= multilib_extra
; *q
!= '\0'; q
++)
7743 /* getenv built-in spec function.
7745 Returns the value of the environment variable given by its first
7746 argument, concatenated with the second argument. If the
7747 environment variable is not defined, a fatal error is issued. */
7750 getenv_spec_function (int argc
, const char **argv
)
7760 value
= getenv (argv
[0]);
7762 fatal_error ("environment variable %qs not defined", argv
[0]);
7764 /* We have to escape every character of the environment variable so
7765 they are not interpreted as active spec characters. A
7766 particularly painful case is when we are reading a variable
7767 holding a windows path complete with \ separators. */
7768 len
= strlen (value
) * 2 + strlen (argv
[1]) + 1;
7769 result
= XNEWVAR (char, len
);
7770 for (ptr
= result
; *value
; ptr
+= 2)
7776 strcpy (ptr
, argv
[1]);
7781 /* if-exists built-in spec function.
7783 Checks to see if the file specified by the absolute pathname in
7784 ARGS exists. Returns that pathname if found.
7786 The usual use for this function is to check for a library file
7787 (whose name has been expanded with %s). */
7790 if_exists_spec_function (int argc
, const char **argv
)
7792 /* Must have only one argument. */
7793 if (argc
== 1 && IS_ABSOLUTE_PATH (argv
[0]) && ! access (argv
[0], R_OK
))
7799 /* if-exists-else built-in spec function.
7801 This is like if-exists, but takes an additional argument which
7802 is returned if the first argument does not exist. */
7805 if_exists_else_spec_function (int argc
, const char **argv
)
7807 /* Must have exactly two arguments. */
7811 if (IS_ABSOLUTE_PATH (argv
[0]) && ! access (argv
[0], R_OK
))
7817 /* replace-outfile built-in spec function.
7819 This looks for the first argument in the outfiles array's name and
7820 replaces it with the second argument. */
7823 replace_outfile_spec_function (int argc
, const char **argv
)
7826 /* Must have exactly two arguments. */
7830 for (i
= 0; i
< n_infiles
; i
++)
7832 if (outfiles
[i
] && !strcmp (outfiles
[i
], argv
[0]))
7833 outfiles
[i
] = xstrdup (argv
[1]);
7838 /* remove-outfile built-in spec function.
7840 * This looks for the first argument in the outfiles array's name and
7844 remove_outfile_spec_function (int argc
, const char **argv
)
7847 /* Must have exactly one argument. */
7851 for (i
= 0; i
< n_infiles
; i
++)
7853 if (outfiles
[i
] && !strcmp (outfiles
[i
], argv
[0]))
7859 /* Given two version numbers, compares the two numbers.
7860 A version number must match the regular expression
7861 ([1-9][0-9]*|0)(\.([1-9][0-9]*|0))*
7864 compare_version_strings (const char *v1
, const char *v2
)
7869 if (regcomp (&r
, "^([1-9][0-9]*|0)(\\.([1-9][0-9]*|0))*$",
7870 REG_EXTENDED
| REG_NOSUB
) != 0)
7872 rresult
= regexec (&r
, v1
, 0, NULL
, 0);
7873 if (rresult
== REG_NOMATCH
)
7874 fatal_error ("invalid version number %qs", v1
);
7875 else if (rresult
!= 0)
7877 rresult
= regexec (&r
, v2
, 0, NULL
, 0);
7878 if (rresult
== REG_NOMATCH
)
7879 fatal_error ("invalid version number %qs", v2
);
7880 else if (rresult
!= 0)
7883 return strverscmp (v1
, v2
);
7887 /* version_compare built-in spec function.
7889 This takes an argument of the following form:
7891 <comparison-op> <arg1> [<arg2>] <switch> <result>
7893 and produces "result" if the comparison evaluates to true,
7894 and nothing if it doesn't.
7896 The supported <comparison-op> values are:
7898 >= true if switch is a later (or same) version than arg1
7900 < true if switch is an earlier version than arg1
7902 >< true if switch is arg1 or later, and earlier than arg2
7903 <> true if switch is earlier than arg1 or is arg2 or later
7905 If the switch is not present, the condition is false unless
7906 the first character of the <comparison-op> is '!'.
7909 %:version-compare(>= 10.3 mmacosx-version-min= -lmx)
7910 adds -lmx if -mmacosx-version-min=10.3.9 was passed. */
7913 version_compare_spec_function (int argc
, const char **argv
)
7917 const char *switch_value
= NULL
;
7922 fatal_error ("too few arguments to %%:version-compare");
7923 if (argv
[0][0] == '\0')
7925 if ((argv
[0][1] == '<' || argv
[0][1] == '>') && argv
[0][0] != '!')
7927 if (argc
!= nargs
+ 3)
7928 fatal_error ("too many arguments to %%:version-compare");
7930 switch_len
= strlen (argv
[nargs
+ 1]);
7931 for (i
= 0; i
< n_switches
; i
++)
7932 if (!strncmp (switches
[i
].part1
, argv
[nargs
+ 1], switch_len
)
7933 && check_live_switch (i
, switch_len
))
7934 switch_value
= switches
[i
].part1
+ switch_len
;
7936 if (switch_value
== NULL
)
7940 comp1
= compare_version_strings (switch_value
, argv
[1]);
7942 comp2
= compare_version_strings (switch_value
, argv
[2]);
7944 comp2
= -1; /* This value unused. */
7947 switch (argv
[0][0] << 8 | argv
[0][1])
7949 case '>' << 8 | '=':
7950 result
= comp1
>= 0;
7952 case '!' << 8 | '<':
7953 result
= comp1
>= 0 || switch_value
== NULL
;
7958 case '!' << 8 | '>':
7959 result
= comp1
< 0 || switch_value
== NULL
;
7961 case '>' << 8 | '<':
7962 result
= comp1
>= 0 && comp2
< 0;
7964 case '<' << 8 | '>':
7965 result
= comp1
< 0 || comp2
>= 0;
7969 fatal_error ("unknown operator %qs in %%:version-compare", argv
[0]);
7974 return argv
[nargs
+ 2];
7977 /* %:include builtin spec function. This differs from %include in that it
7978 can be nested inside a spec, and thus be conditionalized. It takes
7979 one argument, the filename, and looks for it in the startfile path.
7980 The result is always NULL, i.e. an empty expansion. */
7983 include_spec_function (int argc
, const char **argv
)
7990 file
= find_a_file (&startfile_prefixes
, argv
[0], R_OK
, true);
7991 read_specs (file
? file
: argv
[0], FALSE
);
7996 /* %:find-file spec function. This function replaces its argument by
7997 the file found thru find_file, that is the -print-file-name gcc
8000 find_file_spec_function (int argc
, const char **argv
)
8007 file
= find_file (argv
[0]);
8012 /* %:find-plugindir spec function. This function replaces its argument
8013 by the -iplugindir=<dir> option. `dir' is found thru find_file, that
8014 is the -print-file-name gcc program option. */
8016 find_plugindir_spec_function (int argc
, const char **argv ATTRIBUTE_UNUSED
)
8023 option
= concat ("-iplugindir=", find_file ("plugin"), NULL
);
8028 /* %:print-asm-header spec function. Print a banner to say that the
8029 following output is from the assembler. */
8032 print_asm_header_spec_function (int arg ATTRIBUTE_UNUSED
,
8033 const char **argv ATTRIBUTE_UNUSED
)
8035 printf (_("Assembler options\n=================\n\n"));
8036 printf (_("Use \"-Wa,OPTION\" to pass \"OPTION\" to the assembler.\n\n"));
8041 /* Compute a timestamp to initialize flag_random_seed. */
8044 get_local_tick (void)
8048 /* Get some more or less random data. */
8049 #ifdef HAVE_GETTIMEOFDAY
8053 gettimeofday (&tv
, NULL
);
8054 ret
= tv
.tv_sec
* 1000 + tv
.tv_usec
/ 1000;
8058 time_t now
= time (NULL
);
8060 if (now
!= (time_t)-1)
8061 ret
= (unsigned) now
;
8068 /* %:compare-debug-dump-opt spec function. Save the last argument,
8069 expected to be the last -fdump-final-insns option, or generate a
8073 compare_debug_dump_opt_spec_function (int arg
,
8074 const char **argv ATTRIBUTE_UNUSED
)
8079 static char random_seed
[HOST_BITS_PER_WIDE_INT
/ 4 + 3];
8082 fatal_error ("too many arguments to %%:compare-debug-dump-opt");
8084 do_spec_2 ("%{fdump-final-insns=*:%*}");
8085 do_spec_1 (" ", 0, NULL
);
8087 if (VEC_length (const_char_p
, argbuf
) > 0
8088 && strcmp (argv
[VEC_length (const_char_p
, argbuf
) - 1], "."))
8093 name
= xstrdup (argv
[VEC_length (const_char_p
, argbuf
) - 1]);
8098 const char *ext
= NULL
;
8100 if (VEC_length (const_char_p
, argbuf
) > 0)
8102 do_spec_2 ("%{o*:%*}%{!o:%{!S:%b%O}%{S:%b.s}}");
8105 else if (!compare_debug
)
8108 do_spec_2 ("%g.gkd");
8110 do_spec_1 (" ", 0, NULL
);
8112 gcc_assert (VEC_length (const_char_p
, argbuf
) > 0);
8114 name
= concat (VEC_last (const_char_p
, argbuf
), ext
, NULL
);
8116 ret
= concat ("-fdump-final-insns=", name
, NULL
);
8119 which
= compare_debug
< 0;
8120 debug_check_temp_file
[which
] = name
;
8124 unsigned HOST_WIDE_INT value
= get_local_tick () ^ getpid ();
8126 sprintf (random_seed
, HOST_WIDE_INT_PRINT_HEX
, value
);
8130 ret
= concat ("%{!frandom-seed=*:-frandom-seed=", random_seed
, "} ",
8139 static const char *debug_auxbase_opt
;
8141 /* %:compare-debug-self-opt spec function. Expands to the options
8142 that are to be passed in the second compilation of
8146 compare_debug_self_opt_spec_function (int arg
,
8147 const char **argv ATTRIBUTE_UNUSED
)
8150 fatal_error ("too many arguments to %%:compare-debug-self-opt");
8152 if (compare_debug
>= 0)
8155 do_spec_2 ("%{c|S:%{o*:%*}}");
8156 do_spec_1 (" ", 0, NULL
);
8158 if (VEC_length (const_char_p
, argbuf
) > 0)
8159 debug_auxbase_opt
= concat ("-auxbase-strip ",
8160 VEC_last (const_char_p
, argbuf
),
8163 debug_auxbase_opt
= NULL
;
8166 %<o %<MD %<MMD %<MF* %<MG %<MP %<MQ* %<MT* \
8167 %<fdump-final-insns=* -w -S -o %j \
8168 %{!fcompare-debug-second:-fcompare-debug-second} \
8169 ", compare_debug_opt
, NULL
);
8172 /* %:compare-debug-auxbase-opt spec function. Expands to the auxbase
8173 options that are to be passed in the second compilation of
8174 compare-debug. It expects, as an argument, the basename of the
8175 current input file name, with the .gk suffix appended to it. */
8178 compare_debug_auxbase_opt_spec_function (int arg
,
8185 fatal_error ("too few arguments to %%:compare-debug-auxbase-opt");
8188 fatal_error ("too many arguments to %%:compare-debug-auxbase-opt");
8190 if (compare_debug
>= 0)
8193 len
= strlen (argv
[0]);
8194 if (len
< 3 || strcmp (argv
[0] + len
- 3, ".gk") != 0)
8195 fatal_error ("argument to %%:compare-debug-auxbase-opt "
8196 "does not end in .gk");
8198 if (debug_auxbase_opt
)
8199 return debug_auxbase_opt
;
8201 #define OPT "-auxbase "
8204 name
= (char*) xmalloc (sizeof (OPT
) + len
);
8205 memcpy (name
, OPT
, sizeof (OPT
) - 1);
8206 memcpy (name
+ sizeof (OPT
) - 1, argv
[0], len
);
8207 name
[sizeof (OPT
) - 1 + len
] = '\0';
8214 /* %:pass-through-libs spec function. Finds all -l options and input
8215 file names in the lib spec passed to it, and makes a list of them
8216 prepended with the plugin option to cause them to be passed through
8217 to the final link after all the new object files have been added. */
8220 pass_through_libs_spec_func (int argc
, const char **argv
)
8222 char *prepended
= xstrdup (" ");
8224 /* Shlemiel the painter's algorithm. Innately horrible, but at least
8225 we know that there will never be more than a handful of strings to
8226 concat, and it's only once per run, so it's not worth optimising. */
8227 for (n
= 0; n
< argc
; n
++)
8229 char *old
= prepended
;
8230 /* Anything that isn't an option is a full path to an output
8231 file; pass it through if it ends in '.a'. Among options,
8233 if (argv
[n
][0] == '-' && argv
[n
][1] == 'l')
8235 const char *lopt
= argv
[n
] + 2;
8236 /* Handle both joined and non-joined -l options. If for any
8237 reason there's a trailing -l with no joined or following
8238 arg just discard it. */
8239 if (!*lopt
&& ++n
>= argc
)
8243 prepended
= concat (prepended
, "-plugin-opt=-pass-through=-l",
8246 else if (!strcmp (".a", argv
[n
] + strlen (argv
[n
]) - 2))
8248 prepended
= concat (prepended
, "-plugin-opt=-pass-through=",
8249 argv
[n
], " ", NULL
);
8251 if (prepended
!= old
)