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 /* %{e*} includes -export-dynamic; see comment in common.opt. */
648 #ifndef LINK_COMMAND_SPEC
649 #define LINK_COMMAND_SPEC "\
650 %{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:\
653 -plugin %(linker_plugin_file) \
654 -plugin-opt=%(lto_wrapper) \
655 -plugin-opt=-fresolution=%u.res \
656 %{!nostdlib:%{!nodefaultlibs:%:pass-through-libs(%(link_gcc_c_sequence))}} \
657 }"PLUGIN_COND_CLOSE" \
658 %{flto|flto=*:%<fcompare-debug*} \
659 %{flto} %{flto=*} %l " LINK_PIE_SPEC \
660 "%X %{o*} %{e*} %{N} %{n} %{r}\
661 %{s} %{t} %{u*} %{z} %{Z} %{!nostdlib:%{!nostartfiles:%S}}\
662 %{static:} %{L*} %(mfwrap) %(link_libgcc) %o\
663 %{fopenmp|ftree-parallelize-loops=*:%:include(libgomp.spec)%(link_gomp)}\
664 %(mflib) " STACK_SPLIT_SPEC "\
665 %{fprofile-arcs|fprofile-generate*|coverage:-lgcov}\
666 %{!nostdlib:%{!nodefaultlibs:%(link_ssp) %(link_gcc_c_sequence)}}\
667 %{!nostdlib:%{!nostartfiles:%E}} %{T*} }}}}}}"
670 #ifndef LINK_LIBGCC_SPEC
671 /* Generate -L options for startfile prefix list. */
672 # define LINK_LIBGCC_SPEC "%D"
675 #ifndef STARTFILE_PREFIX_SPEC
676 # define STARTFILE_PREFIX_SPEC ""
680 # define SYSROOT_SPEC "--sysroot=%R"
683 #ifndef SYSROOT_SUFFIX_SPEC
684 # define SYSROOT_SUFFIX_SPEC ""
687 #ifndef SYSROOT_HEADERS_SUFFIX_SPEC
688 # define SYSROOT_HEADERS_SUFFIX_SPEC ""
691 static const char *asm_debug
;
692 static const char *cpp_spec
= CPP_SPEC
;
693 static const char *cc1_spec
= CC1_SPEC
;
694 static const char *cc1plus_spec
= CC1PLUS_SPEC
;
695 static const char *link_gcc_c_sequence_spec
= LINK_GCC_C_SEQUENCE_SPEC
;
696 static const char *link_ssp_spec
= LINK_SSP_SPEC
;
697 static const char *asm_spec
= ASM_SPEC
;
698 static const char *asm_final_spec
= ASM_FINAL_SPEC
;
699 static const char *link_spec
= LINK_SPEC
;
700 static const char *lib_spec
= LIB_SPEC
;
701 static const char *mfwrap_spec
= MFWRAP_SPEC
;
702 static const char *mflib_spec
= MFLIB_SPEC
;
703 static const char *link_gomp_spec
= "";
704 static const char *libgcc_spec
= LIBGCC_SPEC
;
705 static const char *endfile_spec
= ENDFILE_SPEC
;
706 static const char *startfile_spec
= STARTFILE_SPEC
;
707 static const char *linker_name_spec
= LINKER_NAME
;
708 static const char *linker_plugin_file_spec
= "";
709 static const char *lto_wrapper_spec
= "";
710 static const char *lto_gcc_spec
= "";
711 static const char *link_command_spec
= LINK_COMMAND_SPEC
;
712 static const char *link_libgcc_spec
= LINK_LIBGCC_SPEC
;
713 static const char *startfile_prefix_spec
= STARTFILE_PREFIX_SPEC
;
714 static const char *sysroot_spec
= SYSROOT_SPEC
;
715 static const char *sysroot_suffix_spec
= SYSROOT_SUFFIX_SPEC
;
716 static const char *sysroot_hdrs_suffix_spec
= SYSROOT_HEADERS_SUFFIX_SPEC
;
718 /* Standard options to cpp, cc1, and as, to reduce duplication in specs.
719 There should be no need to override these in target dependent files,
720 but we need to copy them to the specs file so that newer versions
721 of the GCC driver can correctly drive older tool chains with the
722 appropriate -B options. */
724 /* When cpplib handles traditional preprocessing, get rid of this, and
725 call cc1 (or cc1obj in objc/lang-specs.h) from the main specs so
726 that we default the front end language better. */
727 static const char *trad_capable_cpp
=
728 "cc1 -E %{traditional|traditional-cpp:-traditional-cpp}";
730 /* We don't wrap .d files in %W{} since a missing .d file, and
731 therefore no dependency entry, confuses make into thinking a .o
732 file that happens to exist is up-to-date. */
733 static const char *cpp_unique_options
=
734 "%{!Q:-quiet} %{nostdinc*} %{C} %{CC} %{v} %{I*&F*} %{P} %I\
735 %{MD:-MD %{!o:%b.d}%{o*:%.d%*}}\
736 %{MMD:-MMD %{!o:%b.d}%{o*:%.d%*}}\
737 %{M} %{MM} %{MF*} %{MG} %{MP} %{MQ*} %{MT*}\
738 %{!E:%{!M:%{!MM:%{!MT:%{!MQ:%{MD|MMD:%{o*:-MQ %*}}}}}}}\
739 %{remap} %{g3|ggdb3|gstabs3|gcoff3|gxcoff3|gvms3:-dD}\
740 %{!iplugindir*:%{fplugin*:%:find-plugindir()}}\
741 %{H} %C %{D*&U*&A*} %{i*} %Z %i\
742 %{fmudflap:-D_MUDFLAP -include mf-runtime.h}\
743 %{fmudflapth:-D_MUDFLAP -D_MUDFLAPTH -include mf-runtime.h}\
746 /* This contains cpp options which are common with cc1_options and are passed
747 only when preprocessing only to avoid duplication. We pass the cc1 spec
748 options to the preprocessor so that it the cc1 spec may manipulate
749 options used to set target flags. Those special target flags settings may
750 in turn cause preprocessor symbols to be defined specially. */
751 static const char *cpp_options
=
752 "%(cpp_unique_options) %1 %{m*} %{std*&ansi&trigraphs} %{W*&pedantic*} %{w}\
753 %{f*} %{g*:%{!g0:%{g*} %{!fno-working-directory:-fworking-directory}}} %{O*}\
754 %{undef} %{save-temps*:-fpch-preprocess}";
756 /* This contains cpp options which are not passed when the preprocessor
757 output will be used by another program. */
758 static const char *cpp_debug_options
= "%{d*}";
760 /* NB: This is shared amongst all front-ends, except for Ada. */
761 static const char *cc1_options
=
762 "%{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\
763 %{!iplugindir*:%{fplugin*:%:find-plugindir()}}\
764 %1 %{!Q:-quiet} %{!dumpbase:-dumpbase %B} %{d*} %{m*} %{aux-info*}\
765 %{fcompare-debug-second:%:compare-debug-auxbase-opt(%b)} \
766 %{!fcompare-debug-second:%{c|S:%{o*:-auxbase-strip %*}%{!o*:-auxbase %b}}}%{!c:%{!S:-auxbase %b}} \
767 %{g*} %{O*} %{W*&pedantic*} %{w} %{std*&ansi&trigraphs}\
768 %{v:-version} %{pg:-p} %{p} %{f*} %{undef}\
769 %{Qn:-fno-ident} %{Qy:} %{-help:--help}\
770 %{-target-help:--target-help}\
771 %{-version:--version}\
772 %{-help=*:--help=%*}\
773 %{!fsyntax-only:%{S:%W{o*}%{!o*:-o %b.s}}}\
774 %{fsyntax-only:-o %j} %{-param*}\
775 %{fmudflap|fmudflapth:-fno-builtin -fno-merge-constants}\
776 %{coverage:-fprofile-arcs -ftest-coverage}";
778 static const char *asm_options
=
779 "%{-target-help:%:print-asm-header()} "
781 /* If GNU AS is used, then convert -w (no warnings), -I, and -v
782 to the assembler equivalents. */
783 "%{v} %{w:-W} %{I*} "
785 "%a %Y %{c:%W{o*}%{!o*:-o %w%b%O}}%{!c:-o %d%w%u%O}";
787 static const char *invoke_as
=
788 #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT
790 %{fcompare-debug=*|fdump-final-insns=*:%:compare-debug-dump-opt()}\
791 %{!S:-o %|.s |\n as %(asm_options) %|.s %A }\
795 %{fcompare-debug=*|fdump-final-insns=*:%:compare-debug-dump-opt()}\
796 %{!S:-o %|.s |\n as %(asm_options) %m.s %A }\
800 /* Some compilers have limits on line lengths, and the multilib_select
801 and/or multilib_matches strings can be very long, so we build them at
803 static struct obstack multilib_obstack
;
804 static const char *multilib_select
;
805 static const char *multilib_matches
;
806 static const char *multilib_defaults
;
807 static const char *multilib_exclusions
;
809 /* Check whether a particular argument is a default argument. */
811 #ifndef MULTILIB_DEFAULTS
812 #define MULTILIB_DEFAULTS { "" }
815 static const char *const multilib_defaults_raw
[] = MULTILIB_DEFAULTS
;
817 #ifndef DRIVER_SELF_SPECS
818 #define DRIVER_SELF_SPECS ""
821 /* Adding -fopenmp should imply pthreads. This is particularly important
822 for targets that use different start files and suchlike. */
823 #ifndef GOMP_SELF_SPECS
824 #define GOMP_SELF_SPECS "%{fopenmp|ftree-parallelize-loops=*: -pthread}"
827 static const char *const driver_self_specs
[] = {
828 "%{fdump-final-insns:-fdump-final-insns=.} %<fdump-final-insns",
829 DRIVER_SELF_SPECS
, CONFIGURE_SPECS
, GOMP_SELF_SPECS
832 #ifndef OPTION_DEFAULT_SPECS
833 #define OPTION_DEFAULT_SPECS { "", "" }
842 static const struct default_spec
843 option_default_specs
[] = { OPTION_DEFAULT_SPECS
};
847 struct user_specs
*next
;
848 const char *filename
;
851 static struct user_specs
*user_specs_head
, *user_specs_tail
;
854 /* Record the mapping from file suffixes for compilation specs. */
858 const char *suffix
; /* Use this compiler for input files
859 whose names end in this suffix. */
861 const char *spec
; /* To use this compiler, run this spec. */
863 const char *cpp_spec
; /* If non-NULL, substitute this spec
864 for `%C', rather than the usual
866 const int combinable
; /* If nonzero, compiler can deal with
867 multiple source files at once (IMA). */
868 const int needs_preprocessing
; /* If nonzero, source files need to
869 be run through a preprocessor. */
872 /* Pointer to a vector of `struct compiler' that gives the spec for
873 compiling a file, based on its suffix.
874 A file that does not end in any of these suffixes will be passed
875 unchanged to the loader and nothing else will be done to it.
877 An entry containing two 0s is used to terminate the vector.
879 If multiple entries match a file, the last matching one is used. */
881 static struct compiler
*compilers
;
883 /* Number of entries in `compilers', not counting the null terminator. */
885 static int n_compilers
;
887 /* The default list of file name suffixes and their compilation specs. */
889 static const struct compiler default_compilers
[] =
891 /* Add lists of suffixes of known languages here. If those languages
892 were not present when we built the driver, we will hit these copies
893 and be given a more meaningful error than "file not used since
894 linking is not done". */
895 {".m", "#Objective-C", 0, 0, 0}, {".mi", "#Objective-C", 0, 0, 0},
896 {".mm", "#Objective-C++", 0, 0, 0}, {".M", "#Objective-C++", 0, 0, 0},
897 {".mii", "#Objective-C++", 0, 0, 0},
898 {".cc", "#C++", 0, 0, 0}, {".cxx", "#C++", 0, 0, 0},
899 {".cpp", "#C++", 0, 0, 0}, {".cp", "#C++", 0, 0, 0},
900 {".c++", "#C++", 0, 0, 0}, {".C", "#C++", 0, 0, 0},
901 {".CPP", "#C++", 0, 0, 0}, {".ii", "#C++", 0, 0, 0},
902 {".ads", "#Ada", 0, 0, 0}, {".adb", "#Ada", 0, 0, 0},
903 {".f", "#Fortran", 0, 0, 0}, {".F", "#Fortran", 0, 0, 0},
904 {".for", "#Fortran", 0, 0, 0}, {".FOR", "#Fortran", 0, 0, 0},
905 {".ftn", "#Fortran", 0, 0, 0}, {".FTN", "#Fortran", 0, 0, 0},
906 {".fpp", "#Fortran", 0, 0, 0}, {".FPP", "#Fortran", 0, 0, 0},
907 {".f90", "#Fortran", 0, 0, 0}, {".F90", "#Fortran", 0, 0, 0},
908 {".f95", "#Fortran", 0, 0, 0}, {".F95", "#Fortran", 0, 0, 0},
909 {".f03", "#Fortran", 0, 0, 0}, {".F03", "#Fortran", 0, 0, 0},
910 {".f08", "#Fortran", 0, 0, 0}, {".F08", "#Fortran", 0, 0, 0},
911 {".r", "#Ratfor", 0, 0, 0},
912 {".p", "#Pascal", 0, 0, 0}, {".pas", "#Pascal", 0, 0, 0},
913 {".java", "#Java", 0, 0, 0}, {".class", "#Java", 0, 0, 0},
914 {".zip", "#Java", 0, 0, 0}, {".jar", "#Java", 0, 0, 0},
915 {".go", "#Go", 0, 1, 0},
916 /* Next come the entries for C. */
917 {".c", "@c", 0, 0, 1},
919 /* cc1 has an integrated ISO C preprocessor. We should invoke the
920 external preprocessor if -save-temps is given. */
921 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\
924 %eGNU C no longer supports -traditional without -E}\
925 %{save-temps*|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
926 %(cpp_options) -o %{save-temps*:%b.i} %{!save-temps*:%g.i} \n\
927 cc1 -fpreprocessed %{save-temps*:%b.i} %{!save-temps*:%g.i} \
929 %{!save-temps*:%{!traditional-cpp:%{!no-integrated-cpp:\
930 cc1 %(cpp_unique_options) %(cc1_options)}}}\
931 %{!fsyntax-only:%(invoke_as)}}}}", 0, 0, 1},
933 "%{!E:%e-E or -x required when input is from standard input}\
934 %(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)", 0, 0, 0},
935 {".h", "@c-header", 0, 0, 0},
937 /* cc1 has an integrated ISO C preprocessor. We should invoke the
938 external preprocessor if -save-temps is given. */
939 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\
941 %{save-temps*|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
942 %(cpp_options) -o %{save-temps*:%b.i} %{!save-temps*:%g.i} \n\
943 cc1 -fpreprocessed %{save-temps*:%b.i} %{!save-temps*:%g.i} \
945 %{!fdump-ada-spec*:-o %g.s %{!o*:--output-pch=%i.gch}\
946 %W{o*:--output-pch=%*}}%V}\
947 %{!save-temps*:%{!traditional-cpp:%{!no-integrated-cpp:\
948 cc1 %(cpp_unique_options) %(cc1_options)\
949 %{!fdump-ada-spec*:-o %g.s %{!o*:--output-pch=%i.gch}\
950 %W{o*:--output-pch=%*}}%V}}}}}}", 0, 0, 0},
951 {".i", "@cpp-output", 0, 0, 0},
953 "%{!M:%{!MM:%{!E:cc1 -fpreprocessed %i %(cc1_options) %{!fsyntax-only:%(invoke_as)}}}}", 0, 0, 0},
954 {".s", "@assembler", 0, 0, 0},
956 "%{!M:%{!MM:%{!E:%{!S:as %(asm_debug) %(asm_options) %i %A }}}}", 0, 0, 0},
957 {".sx", "@assembler-with-cpp", 0, 0, 0},
958 {".S", "@assembler-with-cpp", 0, 0, 0},
959 {"@assembler-with-cpp",
960 #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT
961 "%(trad_capable_cpp) -lang-asm %(cpp_options) -fno-directives-only\
962 %{E|M|MM:%(cpp_debug_options)}\
963 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\
964 as %(asm_debug) %(asm_options) %|.s %A }}}}"
966 "%(trad_capable_cpp) -lang-asm %(cpp_options) -fno-directives-only\
967 %{E|M|MM:%(cpp_debug_options)}\
968 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\
969 as %(asm_debug) %(asm_options) %m.s %A }}}}"
974 /* Mark end of table. */
978 /* Number of elements in default_compilers, not counting the terminator. */
980 static const int n_default_compilers
= ARRAY_SIZE (default_compilers
) - 1;
982 typedef char *char_p
; /* For DEF_VEC_P. */
984 DEF_VEC_ALLOC_P(char_p
,heap
);
986 /* A vector of options to give to the linker.
987 These options are accumulated by %x,
988 and substituted into the linker command with %X. */
989 static VEC(char_p
,heap
) *linker_options
;
991 /* A vector of options to give to the assembler.
992 These options are accumulated by -Wa,
993 and substituted into the assembler command with %Y. */
994 static VEC(char_p
,heap
) *assembler_options
;
996 /* A vector of options to give to the preprocessor.
997 These options are accumulated by -Wp,
998 and substituted into the preprocessor command with %Z. */
999 static VEC(char_p
,heap
) *preprocessor_options
;
1002 skip_whitespace (char *p
)
1006 /* A fully-blank line is a delimiter in the SPEC file and shouldn't
1007 be considered whitespace. */
1008 if (p
[0] == '\n' && p
[1] == '\n' && p
[2] == '\n')
1010 else if (*p
== '\n' || *p
== ' ' || *p
== '\t')
1024 /* Structures to keep track of prefixes to try when looking for files. */
1028 const char *prefix
; /* String to prepend to the path. */
1029 struct prefix_list
*next
; /* Next in linked list. */
1030 int require_machine_suffix
; /* Don't use without machine_suffix. */
1031 /* 2 means try both machine_suffix and just_machine_suffix. */
1032 int priority
; /* Sort key - priority within list. */
1033 int os_multilib
; /* 1 if OS multilib scheme should be used,
1034 0 for GCC multilib scheme. */
1039 struct prefix_list
*plist
; /* List of prefixes to try */
1040 int max_len
; /* Max length of a prefix in PLIST */
1041 const char *name
; /* Name of this list (used in config stuff) */
1044 /* List of prefixes to try when looking for executables. */
1046 static struct path_prefix exec_prefixes
= { 0, 0, "exec" };
1048 /* List of prefixes to try when looking for startup (crt0) files. */
1050 static struct path_prefix startfile_prefixes
= { 0, 0, "startfile" };
1052 /* List of prefixes to try when looking for include files. */
1054 static struct path_prefix include_prefixes
= { 0, 0, "include" };
1056 /* Suffix to attach to directories searched for commands.
1057 This looks like `MACHINE/VERSION/'. */
1059 static const char *machine_suffix
= 0;
1061 /* Suffix to attach to directories searched for commands.
1062 This is just `MACHINE/'. */
1064 static const char *just_machine_suffix
= 0;
1066 /* Adjusted value of GCC_EXEC_PREFIX envvar. */
1068 static const char *gcc_exec_prefix
;
1070 /* Adjusted value of standard_libexec_prefix. */
1072 static const char *gcc_libexec_prefix
;
1074 /* Default prefixes to attach to command names. */
1076 #ifndef STANDARD_STARTFILE_PREFIX_1
1077 #define STANDARD_STARTFILE_PREFIX_1 "/lib/"
1079 #ifndef STANDARD_STARTFILE_PREFIX_2
1080 #define STANDARD_STARTFILE_PREFIX_2 "/usr/lib/"
1083 #ifdef CROSS_DIRECTORY_STRUCTURE /* Don't use these prefixes for a cross compiler. */
1084 #undef MD_EXEC_PREFIX
1085 #undef MD_STARTFILE_PREFIX
1086 #undef MD_STARTFILE_PREFIX_1
1089 /* If no prefixes defined, use the null string, which will disable them. */
1090 #ifndef MD_EXEC_PREFIX
1091 #define MD_EXEC_PREFIX ""
1093 #ifndef MD_STARTFILE_PREFIX
1094 #define MD_STARTFILE_PREFIX ""
1096 #ifndef MD_STARTFILE_PREFIX_1
1097 #define MD_STARTFILE_PREFIX_1 ""
1100 /* These directories are locations set at configure-time based on the
1101 --prefix option provided to configure. Their initializers are
1102 defined in Makefile.in. These paths are not *directly* used when
1103 gcc_exec_prefix is set because, in that case, we know where the
1104 compiler has been installed, and use paths relative to that
1105 location instead. */
1106 static const char *const standard_exec_prefix
= STANDARD_EXEC_PREFIX
;
1107 static const char *const standard_libexec_prefix
= STANDARD_LIBEXEC_PREFIX
;
1108 static const char *const standard_bindir_prefix
= STANDARD_BINDIR_PREFIX
;
1109 static const char *const standard_startfile_prefix
= STANDARD_STARTFILE_PREFIX
;
1111 /* For native compilers, these are well-known paths containing
1112 components that may be provided by the system. For cross
1113 compilers, these paths are not used. */
1114 static const char *md_exec_prefix
= MD_EXEC_PREFIX
;
1115 static const char *md_startfile_prefix
= MD_STARTFILE_PREFIX
;
1116 static const char *md_startfile_prefix_1
= MD_STARTFILE_PREFIX_1
;
1117 static const char *const standard_startfile_prefix_1
1118 = STANDARD_STARTFILE_PREFIX_1
;
1119 static const char *const standard_startfile_prefix_2
1120 = STANDARD_STARTFILE_PREFIX_2
;
1122 /* A relative path to be used in finding the location of tools
1123 relative to the driver. */
1124 static const char *const tooldir_base_prefix
= TOOLDIR_BASE_PREFIX
;
1126 /* Subdirectory to use for locating libraries. Set by
1127 set_multilib_dir based on the compilation options. */
1129 static const char *multilib_dir
;
1131 /* Subdirectory to use for locating libraries in OS conventions. Set by
1132 set_multilib_dir based on the compilation options. */
1134 static const char *multilib_os_dir
;
1136 /* Structure to keep track of the specs that have been defined so far.
1137 These are accessed using %(specname) or %[specname] in a compiler
1142 /* The following 2 fields must be first */
1143 /* to allow EXTRA_SPECS to be initialized */
1144 const char *name
; /* name of the spec. */
1145 const char *ptr
; /* available ptr if no static pointer */
1147 /* The following fields are not initialized */
1148 /* by EXTRA_SPECS */
1149 const char **ptr_spec
; /* pointer to the spec itself. */
1150 struct spec_list
*next
; /* Next spec in linked list. */
1151 int name_len
; /* length of the name */
1152 int alloc_p
; /* whether string was allocated */
1155 #define INIT_STATIC_SPEC(NAME,PTR) \
1156 { NAME, NULL, PTR, (struct spec_list *) 0, sizeof (NAME) - 1, 0 }
1158 /* List of statically defined specs. */
1159 static struct spec_list static_specs
[] =
1161 INIT_STATIC_SPEC ("asm", &asm_spec
),
1162 INIT_STATIC_SPEC ("asm_debug", &asm_debug
),
1163 INIT_STATIC_SPEC ("asm_final", &asm_final_spec
),
1164 INIT_STATIC_SPEC ("asm_options", &asm_options
),
1165 INIT_STATIC_SPEC ("invoke_as", &invoke_as
),
1166 INIT_STATIC_SPEC ("cpp", &cpp_spec
),
1167 INIT_STATIC_SPEC ("cpp_options", &cpp_options
),
1168 INIT_STATIC_SPEC ("cpp_debug_options", &cpp_debug_options
),
1169 INIT_STATIC_SPEC ("cpp_unique_options", &cpp_unique_options
),
1170 INIT_STATIC_SPEC ("trad_capable_cpp", &trad_capable_cpp
),
1171 INIT_STATIC_SPEC ("cc1", &cc1_spec
),
1172 INIT_STATIC_SPEC ("cc1_options", &cc1_options
),
1173 INIT_STATIC_SPEC ("cc1plus", &cc1plus_spec
),
1174 INIT_STATIC_SPEC ("link_gcc_c_sequence", &link_gcc_c_sequence_spec
),
1175 INIT_STATIC_SPEC ("link_ssp", &link_ssp_spec
),
1176 INIT_STATIC_SPEC ("endfile", &endfile_spec
),
1177 INIT_STATIC_SPEC ("link", &link_spec
),
1178 INIT_STATIC_SPEC ("lib", &lib_spec
),
1179 INIT_STATIC_SPEC ("mfwrap", &mfwrap_spec
),
1180 INIT_STATIC_SPEC ("mflib", &mflib_spec
),
1181 INIT_STATIC_SPEC ("link_gomp", &link_gomp_spec
),
1182 INIT_STATIC_SPEC ("libgcc", &libgcc_spec
),
1183 INIT_STATIC_SPEC ("startfile", &startfile_spec
),
1184 INIT_STATIC_SPEC ("cross_compile", &cross_compile
),
1185 INIT_STATIC_SPEC ("version", &compiler_version
),
1186 INIT_STATIC_SPEC ("multilib", &multilib_select
),
1187 INIT_STATIC_SPEC ("multilib_defaults", &multilib_defaults
),
1188 INIT_STATIC_SPEC ("multilib_extra", &multilib_extra
),
1189 INIT_STATIC_SPEC ("multilib_matches", &multilib_matches
),
1190 INIT_STATIC_SPEC ("multilib_exclusions", &multilib_exclusions
),
1191 INIT_STATIC_SPEC ("multilib_options", &multilib_options
),
1192 INIT_STATIC_SPEC ("linker", &linker_name_spec
),
1193 INIT_STATIC_SPEC ("linker_plugin_file", &linker_plugin_file_spec
),
1194 INIT_STATIC_SPEC ("lto_wrapper", <o_wrapper_spec
),
1195 INIT_STATIC_SPEC ("lto_gcc", <o_gcc_spec
),
1196 INIT_STATIC_SPEC ("link_libgcc", &link_libgcc_spec
),
1197 INIT_STATIC_SPEC ("md_exec_prefix", &md_exec_prefix
),
1198 INIT_STATIC_SPEC ("md_startfile_prefix", &md_startfile_prefix
),
1199 INIT_STATIC_SPEC ("md_startfile_prefix_1", &md_startfile_prefix_1
),
1200 INIT_STATIC_SPEC ("startfile_prefix_spec", &startfile_prefix_spec
),
1201 INIT_STATIC_SPEC ("sysroot_spec", &sysroot_spec
),
1202 INIT_STATIC_SPEC ("sysroot_suffix_spec", &sysroot_suffix_spec
),
1203 INIT_STATIC_SPEC ("sysroot_hdrs_suffix_spec", &sysroot_hdrs_suffix_spec
),
1206 #ifdef EXTRA_SPECS /* additional specs needed */
1207 /* Structure to keep track of just the first two args of a spec_list.
1208 That is all that the EXTRA_SPECS macro gives us. */
1211 const char *const name
;
1212 const char *const ptr
;
1215 static const struct spec_list_1 extra_specs_1
[] = { EXTRA_SPECS
};
1216 static struct spec_list
*extra_specs
= (struct spec_list
*) 0;
1219 /* List of dynamically allocates specs that have been defined so far. */
1221 static struct spec_list
*specs
= (struct spec_list
*) 0;
1223 /* List of static spec functions. */
1225 static const struct spec_function static_spec_functions
[] =
1227 { "getenv", getenv_spec_function
},
1228 { "if-exists", if_exists_spec_function
},
1229 { "if-exists-else", if_exists_else_spec_function
},
1230 { "replace-outfile", replace_outfile_spec_function
},
1231 { "remove-outfile", remove_outfile_spec_function
},
1232 { "version-compare", version_compare_spec_function
},
1233 { "include", include_spec_function
},
1234 { "find-file", find_file_spec_function
},
1235 { "find-plugindir", find_plugindir_spec_function
},
1236 { "print-asm-header", print_asm_header_spec_function
},
1237 { "compare-debug-dump-opt", compare_debug_dump_opt_spec_function
},
1238 { "compare-debug-self-opt", compare_debug_self_opt_spec_function
},
1239 { "compare-debug-auxbase-opt", compare_debug_auxbase_opt_spec_function
},
1240 { "pass-through-libs", pass_through_libs_spec_func
},
1241 #ifdef EXTRA_SPEC_FUNCTIONS
1242 EXTRA_SPEC_FUNCTIONS
1247 static int processing_spec_function
;
1249 /* Add appropriate libgcc specs to OBSTACK, taking into account
1250 various permutations of -shared-libgcc, -shared, and such. */
1252 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
1254 #ifndef USE_LD_AS_NEEDED
1255 #define USE_LD_AS_NEEDED 0
1259 init_gcc_specs (struct obstack
*obstack
, const char *shared_name
,
1260 const char *static_name
, const char *eh_name
)
1264 buf
= concat ("%{static|static-libgcc:", static_name
, " ", eh_name
, "}"
1265 "%{!static:%{!static-libgcc:"
1266 #if USE_LD_AS_NEEDED
1267 "%{!shared-libgcc:",
1268 static_name
, " --as-needed ", shared_name
, " --no-as-needed"
1271 shared_name
, "%{!shared: ", static_name
, "}"
1275 "%{!shared-libgcc:", static_name
, " ", eh_name
, "}"
1276 "%{shared-libgcc:", shared_name
, " ", static_name
, "}"
1280 "%{shared-libgcc:", shared_name
, "}"
1281 "%{!shared-libgcc:", static_name
, "}"
1284 "%{shared:", shared_name
, "}"
1289 obstack_grow (obstack
, buf
, strlen (buf
));
1292 #endif /* ENABLE_SHARED_LIBGCC */
1294 /* Initialize the specs lookup routines. */
1299 struct spec_list
*next
= (struct spec_list
*) 0;
1300 struct spec_list
*sl
= (struct spec_list
*) 0;
1304 return; /* Already initialized. */
1307 fnotice (stderr
, "Using built-in specs.\n");
1310 extra_specs
= XCNEWVEC (struct spec_list
, ARRAY_SIZE (extra_specs_1
));
1312 for (i
= ARRAY_SIZE (extra_specs_1
) - 1; i
>= 0; i
--)
1314 sl
= &extra_specs
[i
];
1315 sl
->name
= extra_specs_1
[i
].name
;
1316 sl
->ptr
= extra_specs_1
[i
].ptr
;
1318 sl
->name_len
= strlen (sl
->name
);
1319 sl
->ptr_spec
= &sl
->ptr
;
1324 for (i
= ARRAY_SIZE (static_specs
) - 1; i
>= 0; i
--)
1326 sl
= &static_specs
[i
];
1331 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
1332 /* ??? If neither -shared-libgcc nor --static-libgcc was
1333 seen, then we should be making an educated guess. Some proposed
1334 heuristics for ELF include:
1336 (1) If "-Wl,--export-dynamic", then it's a fair bet that the
1337 program will be doing dynamic loading, which will likely
1338 need the shared libgcc.
1340 (2) If "-ldl", then it's also a fair bet that we're doing
1343 (3) For each ET_DYN we're linking against (either through -lfoo
1344 or /some/path/foo.so), check to see whether it or one of
1345 its dependencies depends on a shared libgcc.
1349 If the runtime is fixed to look for program headers instead
1350 of calling __register_frame_info at all, for each object,
1351 use the shared libgcc if any EH symbol referenced.
1353 If crtstuff is fixed to not invoke __register_frame_info
1354 automatically, for each object, use the shared libgcc if
1355 any non-empty unwind section found.
1357 Doing any of this probably requires invoking an external program to
1358 do the actual object file scanning. */
1360 const char *p
= libgcc_spec
;
1363 /* Transform the extant libgcc_spec into one that uses the shared libgcc
1364 when given the proper command line arguments. */
1367 if (in_sep
&& *p
== '-' && strncmp (p
, "-lgcc", 5) == 0)
1369 init_gcc_specs (&obstack
,
1371 #ifdef USE_LIBUNWIND_EXCEPTIONS
1377 #ifdef USE_LIBUNWIND_EXCEPTIONS
1378 # ifdef HAVE_LD_STATIC_DYNAMIC
1379 " %{!static:" LD_STATIC_OPTION
"} -lunwind"
1380 " %{!static:" LD_DYNAMIC_OPTION
"}"
1390 else if (in_sep
&& *p
== 'l' && strncmp (p
, "libgcc.a%s", 10) == 0)
1392 /* Ug. We don't know shared library extensions. Hope that
1393 systems that use this form don't do shared libraries. */
1394 init_gcc_specs (&obstack
,
1398 #ifdef USE_LIBUNWIND_EXCEPTIONS
1407 obstack_1grow (&obstack
, *p
);
1408 in_sep
= (*p
== ' ');
1413 obstack_1grow (&obstack
, '\0');
1414 libgcc_spec
= XOBFINISH (&obstack
, const char *);
1417 #ifdef USE_AS_TRADITIONAL_FORMAT
1418 /* Prepend "--traditional-format" to whatever asm_spec we had before. */
1420 static const char tf
[] = "--traditional-format ";
1421 obstack_grow (&obstack
, tf
, sizeof(tf
) - 1);
1422 obstack_grow0 (&obstack
, asm_spec
, strlen (asm_spec
));
1423 asm_spec
= XOBFINISH (&obstack
, const char *);
1427 #if defined LINK_EH_SPEC || defined LINK_BUILDID_SPEC
1428 # ifdef LINK_BUILDID_SPEC
1429 /* Prepend LINK_BUILDID_SPEC to whatever link_spec we had before. */
1430 obstack_grow (&obstack
, LINK_BUILDID_SPEC
, sizeof(LINK_BUILDID_SPEC
) - 1);
1432 # ifdef LINK_EH_SPEC
1433 /* Prepend LINK_EH_SPEC to whatever link_spec we had before. */
1434 obstack_grow (&obstack
, LINK_EH_SPEC
, sizeof(LINK_EH_SPEC
) - 1);
1436 obstack_grow0 (&obstack
, link_spec
, strlen (link_spec
));
1437 link_spec
= XOBFINISH (&obstack
, const char *);
1443 /* Change the value of spec NAME to SPEC. If SPEC is empty, then the spec is
1444 removed; If the spec starts with a + then SPEC is added to the end of the
1448 set_spec (const char *name
, const char *spec
)
1450 struct spec_list
*sl
;
1451 const char *old_spec
;
1452 int name_len
= strlen (name
);
1455 /* If this is the first call, initialize the statically allocated specs. */
1458 struct spec_list
*next
= (struct spec_list
*) 0;
1459 for (i
= ARRAY_SIZE (static_specs
) - 1; i
>= 0; i
--)
1461 sl
= &static_specs
[i
];
1468 /* See if the spec already exists. */
1469 for (sl
= specs
; sl
; sl
= sl
->next
)
1470 if (name_len
== sl
->name_len
&& !strcmp (sl
->name
, name
))
1475 /* Not found - make it. */
1476 sl
= XNEW (struct spec_list
);
1477 sl
->name
= xstrdup (name
);
1478 sl
->name_len
= name_len
;
1479 sl
->ptr_spec
= &sl
->ptr
;
1481 *(sl
->ptr_spec
) = "";
1486 old_spec
= *(sl
->ptr_spec
);
1487 *(sl
->ptr_spec
) = ((spec
[0] == '+' && ISSPACE ((unsigned char)spec
[1]))
1488 ? concat (old_spec
, spec
+ 1, NULL
)
1493 fnotice (stderr
, "Setting spec %s to '%s'\n\n", name
, *(sl
->ptr_spec
));
1496 /* Free the old spec. */
1497 if (old_spec
&& sl
->alloc_p
)
1498 free (CONST_CAST(char *, old_spec
));
1503 /* Accumulate a command (program name and args), and run it. */
1505 typedef const char *const_char_p
; /* For DEF_VEC_P. */
1506 DEF_VEC_P(const_char_p
);
1507 DEF_VEC_ALLOC_P(const_char_p
,heap
);
1509 /* Vector of pointers to arguments in the current line of specifications. */
1511 static VEC(const_char_p
,heap
) *argbuf
;
1513 /* Position in the argbuf vector containing the name of the output file
1514 (the value associated with the "-o" flag). */
1516 static int have_o_argbuf_index
= 0;
1518 /* Were the options -c, -S or -E passed. */
1519 static int have_c
= 0;
1521 /* Was the option -o passed. */
1522 static int have_o
= 0;
1524 /* This is the list of suffixes and codes (%g/%u/%U/%j) and the associated
1525 temp file. If the HOST_BIT_BUCKET is used for %j, no entry is made for
1528 static struct temp_name
{
1529 const char *suffix
; /* suffix associated with the code. */
1530 int length
; /* strlen (suffix). */
1531 int unique
; /* Indicates whether %g or %u/%U was used. */
1532 const char *filename
; /* associated filename. */
1533 int filename_length
; /* strlen (filename). */
1534 struct temp_name
*next
;
1537 /* Number of commands executed so far. */
1539 static int execution_count
;
1541 /* Number of commands that exited with a signal. */
1543 static int signal_count
;
1545 /* Allocate the argument vector. */
1550 argbuf
= VEC_alloc (const_char_p
, heap
, 10);
1553 /* Clear out the vector of arguments (after a command is executed). */
1558 VEC_truncate (const_char_p
, argbuf
, 0);
1561 /* Add one argument to the vector at the end.
1562 This is done when a space is seen or at the end of the line.
1563 If DELETE_ALWAYS is nonzero, the arg is a filename
1564 and the file should be deleted eventually.
1565 If DELETE_FAILURE is nonzero, the arg is a filename
1566 and the file should be deleted if this compilation fails. */
1569 store_arg (const char *arg
, int delete_always
, int delete_failure
)
1571 VEC_safe_push (const_char_p
, heap
, argbuf
, arg
);
1573 if (strcmp (arg
, "-o") == 0)
1574 have_o_argbuf_index
= VEC_length (const_char_p
, argbuf
);
1575 if (delete_always
|| delete_failure
)
1578 /* If the temporary file we should delete is specified as
1579 part of a joined argument extract the filename. */
1581 && (p
= strrchr (arg
, '=')))
1583 record_temp_file (arg
, delete_always
, delete_failure
);
1587 /* Load specs from a file name named FILENAME, replacing occurrences of
1588 various different types of line-endings, \r\n, \n\r and just \r, with
1592 load_specs (const char *filename
)
1596 struct stat statbuf
;
1603 fnotice (stderr
, "Reading specs from %s\n", filename
);
1605 /* Open and stat the file. */
1606 desc
= open (filename
, O_RDONLY
, 0);
1608 pfatal_with_name (filename
);
1609 if (stat (filename
, &statbuf
) < 0)
1610 pfatal_with_name (filename
);
1612 /* Read contents of file into BUFFER. */
1613 buffer
= XNEWVEC (char, statbuf
.st_size
+ 1);
1614 readlen
= read (desc
, buffer
, (unsigned) statbuf
.st_size
);
1616 pfatal_with_name (filename
);
1617 buffer
[readlen
] = 0;
1620 specs
= XNEWVEC (char, readlen
+ 1);
1622 for (buffer_p
= buffer
; buffer_p
&& *buffer_p
; buffer_p
++)
1628 if (buffer_p
> buffer
&& *(buffer_p
- 1) == '\n') /* \n\r */
1630 else if (*(buffer_p
+ 1) == '\n') /* \r\n */
1644 /* Read compilation specs from a file named FILENAME,
1645 replacing the default ones.
1647 A suffix which starts with `*' is a definition for
1648 one of the machine-specific sub-specs. The "suffix" should be
1649 *asm, *cc1, *cpp, *link, *startfile, etc.
1650 The corresponding spec is stored in asm_spec, etc.,
1651 rather than in the `compilers' vector.
1653 Anything invalid in the file is a fatal error. */
1656 read_specs (const char *filename
, int main_p
)
1661 buffer
= load_specs (filename
);
1663 /* Scan BUFFER for specs, putting them in the vector. */
1669 char *in
, *out
, *p1
, *p2
, *p3
;
1671 /* Advance P in BUFFER to the next nonblank nocomment line. */
1672 p
= skip_whitespace (p
);
1676 /* Is this a special command that starts with '%'? */
1677 /* Don't allow this for the main specs file, since it would
1678 encourage people to overwrite it. */
1679 if (*p
== '%' && !main_p
)
1682 while (*p
&& *p
!= '\n')
1688 if (!strncmp (p1
, "%include", sizeof ("%include") - 1)
1689 && (p1
[sizeof "%include" - 1] == ' '
1690 || p1
[sizeof "%include" - 1] == '\t'))
1694 p1
+= sizeof ("%include");
1695 while (*p1
== ' ' || *p1
== '\t')
1698 if (*p1
++ != '<' || p
[-2] != '>')
1699 fatal_error ("specs %%include syntax malformed after "
1701 (long) (p1
- buffer
+ 1));
1704 new_filename
= find_a_file (&startfile_prefixes
, p1
, R_OK
, true);
1705 read_specs (new_filename
? new_filename
: p1
, FALSE
);
1708 else if (!strncmp (p1
, "%include_noerr", sizeof "%include_noerr" - 1)
1709 && (p1
[sizeof "%include_noerr" - 1] == ' '
1710 || p1
[sizeof "%include_noerr" - 1] == '\t'))
1714 p1
+= sizeof "%include_noerr";
1715 while (*p1
== ' ' || *p1
== '\t')
1718 if (*p1
++ != '<' || p
[-2] != '>')
1719 fatal_error ("specs %%include syntax malformed after "
1721 (long) (p1
- buffer
+ 1));
1724 new_filename
= find_a_file (&startfile_prefixes
, p1
, R_OK
, true);
1726 read_specs (new_filename
, FALSE
);
1727 else if (verbose_flag
)
1728 fnotice (stderr
, "could not find specs file %s\n", p1
);
1731 else if (!strncmp (p1
, "%rename", sizeof "%rename" - 1)
1732 && (p1
[sizeof "%rename" - 1] == ' '
1733 || p1
[sizeof "%rename" - 1] == '\t'))
1736 struct spec_list
*sl
;
1737 struct spec_list
*newsl
;
1739 /* Get original name. */
1740 p1
+= sizeof "%rename";
1741 while (*p1
== ' ' || *p1
== '\t')
1744 if (! ISALPHA ((unsigned char) *p1
))
1745 fatal_error ("specs %%rename syntax malformed after "
1747 (long) (p1
- buffer
));
1750 while (*p2
&& !ISSPACE ((unsigned char) *p2
))
1753 if (*p2
!= ' ' && *p2
!= '\t')
1754 fatal_error ("specs %%rename syntax malformed after "
1756 (long) (p2
- buffer
));
1760 while (*p2
== ' ' || *p2
== '\t')
1763 if (! ISALPHA ((unsigned char) *p2
))
1764 fatal_error ("specs %%rename syntax malformed after "
1766 (long) (p2
- buffer
));
1768 /* Get new spec name. */
1770 while (*p3
&& !ISSPACE ((unsigned char) *p3
))
1774 fatal_error ("specs %%rename syntax malformed after "
1776 (long) (p3
- buffer
));
1779 for (sl
= specs
; sl
; sl
= sl
->next
)
1780 if (name_len
== sl
->name_len
&& !strcmp (sl
->name
, p1
))
1784 fatal_error ("specs %s spec was not found to be renamed", p1
);
1786 if (strcmp (p1
, p2
) == 0)
1789 for (newsl
= specs
; newsl
; newsl
= newsl
->next
)
1790 if (strcmp (newsl
->name
, p2
) == 0)
1791 fatal_error ("%s: attempt to rename spec %qs to "
1792 "already defined spec %qs",
1797 fnotice (stderr
, "rename spec %s to %s\n", p1
, p2
);
1799 fnotice (stderr
, "spec is '%s'\n\n", *(sl
->ptr_spec
));
1803 set_spec (p2
, *(sl
->ptr_spec
));
1805 free (CONST_CAST (char *, *(sl
->ptr_spec
)));
1807 *(sl
->ptr_spec
) = "";
1812 fatal_error ("specs unknown %% command after %ld characters",
1813 (long) (p1
- buffer
));
1816 /* Find the colon that should end the suffix. */
1818 while (*p1
&& *p1
!= ':' && *p1
!= '\n')
1821 /* The colon shouldn't be missing. */
1823 fatal_error ("specs file malformed after %ld characters",
1824 (long) (p1
- buffer
));
1826 /* Skip back over trailing whitespace. */
1828 while (p2
> buffer
&& (p2
[-1] == ' ' || p2
[-1] == '\t'))
1831 /* Copy the suffix to a string. */
1832 suffix
= save_string (p
, p2
- p
);
1833 /* Find the next line. */
1834 p
= skip_whitespace (p1
+ 1);
1836 fatal_error ("specs file malformed after %ld characters",
1837 (long) (p
- buffer
));
1840 /* Find next blank line or end of string. */
1841 while (*p1
&& !(*p1
== '\n' && (p1
[1] == '\n' || p1
[1] == '\0')))
1844 /* Specs end at the blank line and do not include the newline. */
1845 spec
= save_string (p
, p1
- p
);
1848 /* Delete backslash-newline sequences from the spec. */
1853 if (in
[0] == '\\' && in
[1] == '\n')
1855 else if (in
[0] == '#')
1856 while (*in
&& *in
!= '\n')
1864 if (suffix
[0] == '*')
1866 if (! strcmp (suffix
, "*link_command"))
1867 link_command_spec
= spec
;
1869 set_spec (suffix
+ 1, spec
);
1873 /* Add this pair to the vector. */
1875 = XRESIZEVEC (struct compiler
, compilers
, n_compilers
+ 2);
1877 compilers
[n_compilers
].suffix
= suffix
;
1878 compilers
[n_compilers
].spec
= spec
;
1880 memset (&compilers
[n_compilers
], 0, sizeof compilers
[n_compilers
]);
1884 link_command_spec
= spec
;
1887 if (link_command_spec
== 0)
1888 fatal_error ("spec file has no spec for linking");
1891 /* Record the names of temporary files we tell compilers to write,
1892 and delete them at the end of the run. */
1894 /* This is the common prefix we use to make temp file names.
1895 It is chosen once for each run of this program.
1896 It is substituted into a spec by %g or %j.
1897 Thus, all temp file names contain this prefix.
1898 In practice, all temp file names start with this prefix.
1900 This prefix comes from the envvar TMPDIR if it is defined;
1901 otherwise, from the P_tmpdir macro if that is defined;
1902 otherwise, in /usr/tmp or /tmp;
1903 or finally the current directory if all else fails. */
1905 static const char *temp_filename
;
1907 /* Length of the prefix. */
1909 static int temp_filename_length
;
1911 /* Define the list of temporary files to delete. */
1916 struct temp_file
*next
;
1919 /* Queue of files to delete on success or failure of compilation. */
1920 static struct temp_file
*always_delete_queue
;
1921 /* Queue of files to delete on failure of compilation. */
1922 static struct temp_file
*failure_delete_queue
;
1924 /* Record FILENAME as a file to be deleted automatically.
1925 ALWAYS_DELETE nonzero means delete it if all compilation succeeds;
1926 otherwise delete it in any case.
1927 FAIL_DELETE nonzero means delete it if a compilation step fails;
1928 otherwise delete it in any case. */
1931 record_temp_file (const char *filename
, int always_delete
, int fail_delete
)
1933 char *const name
= xstrdup (filename
);
1937 struct temp_file
*temp
;
1938 for (temp
= always_delete_queue
; temp
; temp
= temp
->next
)
1939 if (! strcmp (name
, temp
->name
))
1942 temp
= XNEW (struct temp_file
);
1943 temp
->next
= always_delete_queue
;
1945 always_delete_queue
= temp
;
1952 struct temp_file
*temp
;
1953 for (temp
= failure_delete_queue
; temp
; temp
= temp
->next
)
1954 if (! strcmp (name
, temp
->name
))
1957 temp
= XNEW (struct temp_file
);
1958 temp
->next
= failure_delete_queue
;
1960 failure_delete_queue
= temp
;
1966 /* Delete all the temporary files whose names we previously recorded. */
1968 #ifndef DELETE_IF_ORDINARY
1969 #define DELETE_IF_ORDINARY(NAME,ST,VERBOSE_FLAG) \
1972 if (stat (NAME, &ST) >= 0 && S_ISREG (ST.st_mode)) \
1973 if (unlink (NAME) < 0) \
1975 perror_with_name (NAME); \
1980 delete_if_ordinary (const char *name
)
1986 printf ("Delete %s? (y or n) ", name
);
1990 while ((c
= getchar ()) != '\n' && c
!= EOF
)
1993 if (i
== 'y' || i
== 'Y')
1995 DELETE_IF_ORDINARY (name
, st
, verbose_flag
);
1999 delete_temp_files (void)
2001 struct temp_file
*temp
;
2003 for (temp
= always_delete_queue
; temp
; temp
= temp
->next
)
2004 delete_if_ordinary (temp
->name
);
2005 always_delete_queue
= 0;
2008 /* Delete all the files to be deleted on error. */
2011 delete_failure_queue (void)
2013 struct temp_file
*temp
;
2015 for (temp
= failure_delete_queue
; temp
; temp
= temp
->next
)
2016 delete_if_ordinary (temp
->name
);
2020 clear_failure_queue (void)
2022 failure_delete_queue
= 0;
2025 /* Call CALLBACK for each path in PATHS, breaking out early if CALLBACK
2027 If DO_MULTI is true iterate over the paths twice, first with multilib
2028 suffix then without, otherwise iterate over the paths once without
2029 adding a multilib suffix. When DO_MULTI is true, some attempt is made
2030 to avoid visiting the same path twice, but we could do better. For
2031 instance, /usr/lib/../lib is considered different from /usr/lib.
2032 At least EXTRA_SPACE chars past the end of the path passed to
2033 CALLBACK are available for use by the callback.
2034 CALLBACK_INFO allows extra parameters to be passed to CALLBACK.
2036 Returns the value returned by CALLBACK. */
2039 for_each_path (const struct path_prefix
*paths
,
2042 void *(*callback
) (char *, void *),
2043 void *callback_info
)
2045 struct prefix_list
*pl
;
2046 const char *multi_dir
= NULL
;
2047 const char *multi_os_dir
= NULL
;
2048 const char *multi_suffix
;
2049 const char *just_multi_suffix
;
2052 bool skip_multi_dir
= false;
2053 bool skip_multi_os_dir
= false;
2055 multi_suffix
= machine_suffix
;
2056 just_multi_suffix
= just_machine_suffix
;
2057 if (do_multi
&& multilib_dir
&& strcmp (multilib_dir
, ".") != 0)
2059 multi_dir
= concat (multilib_dir
, dir_separator_str
, NULL
);
2060 multi_suffix
= concat (multi_suffix
, multi_dir
, NULL
);
2061 just_multi_suffix
= concat (just_multi_suffix
, multi_dir
, NULL
);
2063 if (do_multi
&& multilib_os_dir
&& strcmp (multilib_os_dir
, ".") != 0)
2064 multi_os_dir
= concat (multilib_os_dir
, dir_separator_str
, NULL
);
2068 size_t multi_dir_len
= 0;
2069 size_t multi_os_dir_len
= 0;
2071 size_t just_suffix_len
;
2075 multi_dir_len
= strlen (multi_dir
);
2077 multi_os_dir_len
= strlen (multi_os_dir
);
2078 suffix_len
= strlen (multi_suffix
);
2079 just_suffix_len
= strlen (just_multi_suffix
);
2083 len
= paths
->max_len
+ extra_space
+ 1;
2084 if (suffix_len
> multi_os_dir_len
)
2087 len
+= multi_os_dir_len
;
2088 path
= XNEWVEC (char, len
);
2091 for (pl
= paths
->plist
; pl
!= 0; pl
= pl
->next
)
2093 len
= strlen (pl
->prefix
);
2094 memcpy (path
, pl
->prefix
, len
);
2096 /* Look first in MACHINE/VERSION subdirectory. */
2097 if (!skip_multi_dir
)
2099 memcpy (path
+ len
, multi_suffix
, suffix_len
+ 1);
2100 ret
= callback (path
, callback_info
);
2105 /* Some paths are tried with just the machine (ie. target)
2106 subdir. This is used for finding as, ld, etc. */
2108 && pl
->require_machine_suffix
== 2)
2110 memcpy (path
+ len
, just_multi_suffix
, just_suffix_len
+ 1);
2111 ret
= callback (path
, callback_info
);
2116 /* Now try the base path. */
2117 if (!pl
->require_machine_suffix
2118 && !(pl
->os_multilib
? skip_multi_os_dir
: skip_multi_dir
))
2120 const char *this_multi
;
2121 size_t this_multi_len
;
2123 if (pl
->os_multilib
)
2125 this_multi
= multi_os_dir
;
2126 this_multi_len
= multi_os_dir_len
;
2130 this_multi
= multi_dir
;
2131 this_multi_len
= multi_dir_len
;
2135 memcpy (path
+ len
, this_multi
, this_multi_len
+ 1);
2139 ret
= callback (path
, callback_info
);
2147 if (multi_dir
== NULL
&& multi_os_dir
== NULL
)
2150 /* Run through the paths again, this time without multilibs.
2151 Don't repeat any we have already seen. */
2154 free (CONST_CAST (char *, multi_dir
));
2156 free (CONST_CAST (char *, multi_suffix
));
2157 multi_suffix
= machine_suffix
;
2158 free (CONST_CAST (char *, just_multi_suffix
));
2159 just_multi_suffix
= just_machine_suffix
;
2162 skip_multi_dir
= true;
2165 free (CONST_CAST (char *, multi_os_dir
));
2166 multi_os_dir
= NULL
;
2169 skip_multi_os_dir
= true;
2174 free (CONST_CAST (char *, multi_dir
));
2175 free (CONST_CAST (char *, multi_suffix
));
2176 free (CONST_CAST (char *, just_multi_suffix
));
2179 free (CONST_CAST (char *, multi_os_dir
));
2185 /* Callback for build_search_list. Adds path to obstack being built. */
2187 struct add_to_obstack_info
{
2194 add_to_obstack (char *path
, void *data
)
2196 struct add_to_obstack_info
*info
= (struct add_to_obstack_info
*) data
;
2198 if (info
->check_dir
&& !is_directory (path
, false))
2201 if (!info
->first_time
)
2202 obstack_1grow (info
->ob
, PATH_SEPARATOR
);
2204 obstack_grow (info
->ob
, path
, strlen (path
));
2206 info
->first_time
= false;
2210 /* Add or change the value of an environment variable, outputting the
2211 change to standard error if in verbose mode. */
2213 xputenv (const char *string
)
2216 fnotice (stderr
, "%s\n", string
);
2217 putenv (CONST_CAST (char *, string
));
2220 /* Build a list of search directories from PATHS.
2221 PREFIX is a string to prepend to the list.
2222 If CHECK_DIR_P is true we ensure the directory exists.
2223 If DO_MULTI is true, multilib paths are output first, then
2225 This is used mostly by putenv_from_prefixes so we use `collect_obstack'.
2226 It is also used by the --print-search-dirs flag. */
2229 build_search_list (const struct path_prefix
*paths
, const char *prefix
,
2230 bool check_dir
, bool do_multi
)
2232 struct add_to_obstack_info info
;
2234 info
.ob
= &collect_obstack
;
2235 info
.check_dir
= check_dir
;
2236 info
.first_time
= true;
2238 obstack_grow (&collect_obstack
, prefix
, strlen (prefix
));
2239 obstack_1grow (&collect_obstack
, '=');
2241 for_each_path (paths
, do_multi
, 0, add_to_obstack
, &info
);
2243 obstack_1grow (&collect_obstack
, '\0');
2244 return XOBFINISH (&collect_obstack
, char *);
2247 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
2251 putenv_from_prefixes (const struct path_prefix
*paths
, const char *env_var
,
2254 xputenv (build_search_list (paths
, env_var
, true, do_multi
));
2257 /* Check whether NAME can be accessed in MODE. This is like access,
2258 except that it never considers directories to be executable. */
2261 access_check (const char *name
, int mode
)
2267 if (stat (name
, &st
) < 0
2268 || S_ISDIR (st
.st_mode
))
2272 return access (name
, mode
);
2275 /* Callback for find_a_file. Appends the file name to the directory
2276 path. If the resulting file exists in the right mode, return the
2277 full pathname to the file. */
2279 struct file_at_path_info
{
2288 file_at_path (char *path
, void *data
)
2290 struct file_at_path_info
*info
= (struct file_at_path_info
*) data
;
2291 size_t len
= strlen (path
);
2293 memcpy (path
+ len
, info
->name
, info
->name_len
);
2294 len
+= info
->name_len
;
2296 /* Some systems have a suffix for executable files.
2297 So try appending that first. */
2298 if (info
->suffix_len
)
2300 memcpy (path
+ len
, info
->suffix
, info
->suffix_len
+ 1);
2301 if (access_check (path
, info
->mode
) == 0)
2306 if (access_check (path
, info
->mode
) == 0)
2312 /* Search for NAME using the prefix list PREFIXES. MODE is passed to
2313 access to check permissions. If DO_MULTI is true, search multilib
2314 paths then non-multilib paths, otherwise do not search multilib paths.
2315 Return 0 if not found, otherwise return its name, allocated with malloc. */
2318 find_a_file (const struct path_prefix
*pprefix
, const char *name
, int mode
,
2321 struct file_at_path_info info
;
2323 #ifdef DEFAULT_ASSEMBLER
2324 if (! strcmp (name
, "as") && access (DEFAULT_ASSEMBLER
, mode
) == 0)
2325 return xstrdup (DEFAULT_ASSEMBLER
);
2328 #ifdef DEFAULT_LINKER
2329 if (! strcmp(name
, "ld") && access (DEFAULT_LINKER
, mode
) == 0)
2330 return xstrdup (DEFAULT_LINKER
);
2333 /* Determine the filename to execute (special case for absolute paths). */
2335 if (IS_ABSOLUTE_PATH (name
))
2337 if (access (name
, mode
) == 0)
2338 return xstrdup (name
);
2344 info
.suffix
= (mode
& X_OK
) != 0 ? HOST_EXECUTABLE_SUFFIX
: "";
2345 info
.name_len
= strlen (info
.name
);
2346 info
.suffix_len
= strlen (info
.suffix
);
2349 return (char*) for_each_path (pprefix
, do_multi
,
2350 info
.name_len
+ info
.suffix_len
,
2351 file_at_path
, &info
);
2354 /* Ranking of prefixes in the sort list. -B prefixes are put before
2357 enum path_prefix_priority
2359 PREFIX_PRIORITY_B_OPT
,
2360 PREFIX_PRIORITY_LAST
2363 /* Add an entry for PREFIX in PLIST. The PLIST is kept in ascending
2364 order according to PRIORITY. Within each PRIORITY, new entries are
2367 If WARN is nonzero, we will warn if no file is found
2368 through this prefix. WARN should point to an int
2369 which will be set to 1 if this entry is used.
2371 COMPONENT is the value to be passed to update_path.
2373 REQUIRE_MACHINE_SUFFIX is 1 if this prefix can't be used without
2374 the complete value of machine_suffix.
2375 2 means try both machine_suffix and just_machine_suffix. */
2378 add_prefix (struct path_prefix
*pprefix
, const char *prefix
,
2379 const char *component
, /* enum prefix_priority */ int priority
,
2380 int require_machine_suffix
, int os_multilib
)
2382 struct prefix_list
*pl
, **prev
;
2385 for (prev
= &pprefix
->plist
;
2386 (*prev
) != NULL
&& (*prev
)->priority
<= priority
;
2387 prev
= &(*prev
)->next
)
2390 /* Keep track of the longest prefix. */
2392 prefix
= update_path (prefix
, component
);
2393 len
= strlen (prefix
);
2394 if (len
> pprefix
->max_len
)
2395 pprefix
->max_len
= len
;
2397 pl
= XNEW (struct prefix_list
);
2398 pl
->prefix
= prefix
;
2399 pl
->require_machine_suffix
= require_machine_suffix
;
2400 pl
->priority
= priority
;
2401 pl
->os_multilib
= os_multilib
;
2403 /* Insert after PREV. */
2408 /* Same as add_prefix, but prepending target_system_root to prefix. */
2409 /* The target_system_root prefix has been relocated by gcc_exec_prefix. */
2411 add_sysrooted_prefix (struct path_prefix
*pprefix
, const char *prefix
,
2412 const char *component
,
2413 /* enum prefix_priority */ int priority
,
2414 int require_machine_suffix
, int os_multilib
)
2416 if (!IS_ABSOLUTE_PATH (prefix
))
2417 fatal_error ("system path %qs is not absolute", prefix
);
2419 if (target_system_root
)
2421 if (target_sysroot_suffix
)
2422 prefix
= concat (target_sysroot_suffix
, prefix
, NULL
);
2423 prefix
= concat (target_system_root
, prefix
, NULL
);
2425 /* We have to override this because GCC's notion of sysroot
2426 moves along with GCC. */
2430 add_prefix (pprefix
, prefix
, component
, priority
,
2431 require_machine_suffix
, os_multilib
);
2434 /* Execute the command specified by the arguments on the current line of spec.
2435 When using pipes, this includes several piped-together commands
2436 with `|' between them.
2438 Return 0 if successful, -1 if failed. */
2444 int n_commands
; /* # of command. */
2446 struct pex_obj
*pex
;
2449 const char *prog
; /* program name. */
2450 const char **argv
; /* vector of args. */
2454 struct command
*commands
; /* each command buffer with above info. */
2456 gcc_assert (!processing_spec_function
);
2460 string
= find_a_file (&exec_prefixes
,
2461 VEC_index (const_char_p
, argbuf
, 0), X_OK
, false);
2463 VEC_replace (const_char_p
, argbuf
, 0, string
);
2464 insert_wrapper (wrapper_string
);
2467 /* Count # of piped commands. */
2468 for (n_commands
= 1, i
= 0; VEC_iterate (const_char_p
, argbuf
, i
, arg
); i
++)
2469 if (strcmp (arg
, "|") == 0)
2472 /* Get storage for each command. */
2473 commands
= (struct command
*) alloca (n_commands
* sizeof (struct command
));
2475 /* Split argbuf into its separate piped processes,
2476 and record info about each one.
2477 Also search for the programs that are to be run. */
2479 VEC_safe_push (const_char_p
, heap
, argbuf
, 0);
2481 commands
[0].prog
= VEC_index (const_char_p
, argbuf
, 0); /* first command. */
2482 commands
[0].argv
= VEC_address (const_char_p
, argbuf
);
2484 if (!wrapper_string
)
2486 string
= find_a_file (&exec_prefixes
, commands
[0].prog
, X_OK
, false);
2487 commands
[0].argv
[0] = (string
) ? string
: commands
[0].argv
[0];
2490 for (n_commands
= 1, i
= 0; VEC_iterate (const_char_p
, argbuf
, i
, arg
); i
++)
2491 if (arg
&& strcmp (arg
, "|") == 0)
2492 { /* each command. */
2493 #if defined (__MSDOS__) || defined (OS2) || defined (VMS)
2494 fatal_error ("-pipe not supported");
2496 VEC_replace (const_char_p
, argbuf
, i
, 0); /* Termination of
2498 commands
[n_commands
].prog
= VEC_index (const_char_p
, argbuf
, i
+ 1);
2499 commands
[n_commands
].argv
2500 = &(VEC_address (const_char_p
, argbuf
))[i
+ 1];
2501 string
= find_a_file (&exec_prefixes
, commands
[n_commands
].prog
,
2504 commands
[n_commands
].argv
[0] = string
;
2508 /* If -v, print what we are about to do, and maybe query. */
2512 /* For help listings, put a blank line between sub-processes. */
2513 if (print_help_list
)
2514 fputc ('\n', stderr
);
2516 /* Print each piped command as a separate line. */
2517 for (i
= 0; i
< n_commands
; i
++)
2519 const char *const *j
;
2521 if (verbose_only_flag
)
2523 for (j
= commands
[i
].argv
; *j
; j
++)
2526 for (p
= *j
; *p
; ++p
)
2527 if (!ISALNUM ((unsigned char) *p
)
2528 && *p
!= '_' && *p
!= '/' && *p
!= '-' && *p
!= '.')
2532 fprintf (stderr
, " \"");
2533 for (p
= *j
; *p
; ++p
)
2535 if (*p
== '"' || *p
== '\\' || *p
== '$')
2536 fputc ('\\', stderr
);
2539 fputc ('"', stderr
);
2541 /* If it's empty, print "". */
2543 fprintf (stderr
, " \"\"");
2545 fprintf (stderr
, " %s", *j
);
2549 for (j
= commands
[i
].argv
; *j
; j
++)
2550 /* If it's empty, print "". */
2552 fprintf (stderr
, " \"\"");
2554 fprintf (stderr
, " %s", *j
);
2556 /* Print a pipe symbol after all but the last command. */
2557 if (i
+ 1 != n_commands
)
2558 fprintf (stderr
, " |");
2559 fprintf (stderr
, "\n");
2562 if (verbose_only_flag
!= 0)
2564 /* verbose_only_flag should act as if the spec was
2565 executed, so increment execution_count before
2566 returning. This prevents spurious warnings about
2567 unused linker input files, etc. */
2572 fnotice (stderr
, "\nGo ahead? (y or n) ");
2576 while (getchar () != '\n')
2579 if (i
!= 'y' && i
!= 'Y')
2584 #ifdef ENABLE_VALGRIND_CHECKING
2585 /* Run the each command through valgrind. To simplify prepending the
2586 path to valgrind and the option "-q" (for quiet operation unless
2587 something triggers), we allocate a separate argv array. */
2589 for (i
= 0; i
< n_commands
; i
++)
2595 for (argc
= 0; commands
[i
].argv
[argc
] != NULL
; argc
++)
2598 argv
= XALLOCAVEC (const char *, argc
+ 3);
2600 argv
[0] = VALGRIND_PATH
;
2602 for (j
= 2; j
< argc
+ 2; j
++)
2603 argv
[j
] = commands
[i
].argv
[j
- 2];
2606 commands
[i
].argv
= argv
;
2607 commands
[i
].prog
= argv
[0];
2611 /* Run each piped subprocess. */
2613 pex
= pex_init (PEX_USE_PIPES
| ((report_times
|| report_times_to_file
)
2614 ? PEX_RECORD_TIMES
: 0),
2615 progname
, temp_filename
);
2617 fatal_error ("pex_init failed: %m");
2619 for (i
= 0; i
< n_commands
; i
++)
2623 const char *string
= commands
[i
].argv
[0];
2625 errmsg
= pex_run (pex
,
2626 ((i
+ 1 == n_commands
? PEX_LAST
: 0)
2627 | (string
== commands
[i
].prog
? PEX_SEARCH
: 0)),
2628 string
, CONST_CAST (char **, commands
[i
].argv
),
2633 fatal_error (errmsg
);
2637 pfatal_with_name (errmsg
);
2641 if (string
!= commands
[i
].prog
)
2642 free (CONST_CAST (char *, string
));
2647 /* Wait for all the subprocesses to finish. */
2651 struct pex_time
*times
= NULL
;
2654 statuses
= (int *) alloca (n_commands
* sizeof (int));
2655 if (!pex_get_status (pex
, n_commands
, statuses
))
2656 fatal_error ("failed to get exit status: %m");
2658 if (report_times
|| report_times_to_file
)
2660 times
= (struct pex_time
*) alloca (n_commands
* sizeof (struct pex_time
));
2661 if (!pex_get_times (pex
, n_commands
, times
))
2662 fatal_error ("failed to get process times: %m");
2667 for (i
= 0; i
< n_commands
; ++i
)
2669 int status
= statuses
[i
];
2671 if (WIFSIGNALED (status
))
2674 /* SIGPIPE is a special case. It happens in -pipe mode
2675 when the compiler dies before the preprocessor is done,
2676 or the assembler dies before the compiler is done.
2677 There's generally been an error already, and this is
2678 just fallout. So don't generate another error unless
2679 we would otherwise have succeeded. */
2680 if (WTERMSIG (status
) == SIGPIPE
2681 && (signal_count
|| greatest_status
>= MIN_FATAL_STATUS
))
2688 internal_error ("%s (program %s)",
2689 strsignal (WTERMSIG (status
)), commands
[i
].prog
);
2691 else if (WIFEXITED (status
)
2692 && WEXITSTATUS (status
) >= MIN_FATAL_STATUS
)
2694 if (WEXITSTATUS (status
) > greatest_status
)
2695 greatest_status
= WEXITSTATUS (status
);
2699 if (report_times
|| report_times_to_file
)
2701 struct pex_time
*pt
= ×
[i
];
2704 ut
= ((double) pt
->user_seconds
2705 + (double) pt
->user_microseconds
/ 1.0e6
);
2706 st
= ((double) pt
->system_seconds
2707 + (double) pt
->system_microseconds
/ 1.0e6
);
2712 fnotice (stderr
, "# %s %.2f %.2f\n",
2713 commands
[i
].prog
, ut
, st
);
2715 if (report_times_to_file
)
2718 const char *const *j
;
2720 fprintf (report_times_to_file
, "%g %g", ut
, st
);
2722 for (j
= &commands
[i
].prog
; *j
; j
= &commands
[i
].argv
[++c
])
2725 for (p
= *j
; *p
; ++p
)
2726 if (*p
== '"' || *p
== '\\' || *p
== '$'
2732 fprintf (report_times_to_file
, " \"");
2733 for (p
= *j
; *p
; ++p
)
2735 if (*p
== '"' || *p
== '\\' || *p
== '$')
2736 fputc ('\\', report_times_to_file
);
2737 fputc (*p
, report_times_to_file
);
2739 fputc ('"', report_times_to_file
);
2742 fprintf (report_times_to_file
, " %s", *j
);
2745 fputc ('\n', report_times_to_file
);
2755 /* Find all the switches given to us
2756 and make a vector describing them.
2757 The elements of the vector are strings, one per switch given.
2758 If a switch uses following arguments, then the `part1' field
2759 is the switch itself and the `args' field
2760 is a null-terminated vector containing the following arguments.
2761 Bits in the `live_cond' field are:
2762 SWITCH_LIVE to indicate this switch is true in a conditional spec.
2763 SWITCH_FALSE to indicate this switch is overridden by a later switch.
2764 SWITCH_IGNORE to indicate this switch should be ignored (used in %<S).
2765 SWITCH_IGNORE_PERMANENTLY to indicate this switch should be ignored
2766 in all do_spec calls afterwards. Used for %<S from self specs.
2767 The `validated' field is nonzero if any spec has looked at this switch;
2768 if it remains zero at the end of the run, it must be meaningless. */
2770 #define SWITCH_LIVE (1 << 0)
2771 #define SWITCH_FALSE (1 << 1)
2772 #define SWITCH_IGNORE (1 << 2)
2773 #define SWITCH_IGNORE_PERMANENTLY (1 << 3)
2774 #define SWITCH_KEEP_FOR_GCC (1 << 4)
2780 unsigned int live_cond
;
2781 unsigned char validated
;
2782 unsigned char ordering
;
2785 static struct switchstr
*switches
;
2787 static int n_switches
;
2789 static int n_switches_alloc
;
2791 /* Set to zero if -fcompare-debug is disabled, positive if it's
2792 enabled and we're running the first compilation, negative if it's
2793 enabled and we're running the second compilation. For most of the
2794 time, it's in the range -1..1, but it can be temporarily set to 2
2795 or 3 to indicate that the -fcompare-debug flags didn't come from
2796 the command-line, but rather from the GCC_COMPARE_DEBUG environment
2797 variable, until a synthesized -fcompare-debug flag is added to the
2801 /* Set to nonzero if we've seen the -fcompare-debug-second flag. */
2802 int compare_debug_second
;
2804 /* Set to the flags that should be passed to the second compilation in
2805 a -fcompare-debug compilation. */
2806 const char *compare_debug_opt
;
2808 static struct switchstr
*switches_debug_check
[2];
2810 static int n_switches_debug_check
[2];
2812 static int n_switches_alloc_debug_check
[2];
2814 static char *debug_check_temp_file
[2];
2816 /* Language is one of three things:
2818 1) The name of a real programming language.
2819 2) NULL, indicating that no one has figured out
2821 3) '*', indicating that the file should be passed
2826 const char *language
;
2827 struct compiler
*incompiler
;
2832 /* Also a vector of input files specified. */
2834 static struct infile
*infiles
;
2838 static int n_infiles_alloc
;
2840 /* True if multiple input files are being compiled to a single
2843 static bool combine_inputs
;
2845 /* This counts the number of libraries added by lang_specific_driver, so that
2846 we can tell if there were any user supplied any files or libraries. */
2848 static int added_libraries
;
2850 /* And a vector of corresponding output files is made up later. */
2852 const char **outfiles
;
2854 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2856 /* Convert NAME to a new name if it is the standard suffix. DO_EXE
2857 is true if we should look for an executable suffix. DO_OBJ
2858 is true if we should look for an object suffix. */
2861 convert_filename (const char *name
, int do_exe ATTRIBUTE_UNUSED
,
2862 int do_obj ATTRIBUTE_UNUSED
)
2864 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2872 len
= strlen (name
);
2874 #ifdef HAVE_TARGET_OBJECT_SUFFIX
2875 /* Convert x.o to x.obj if TARGET_OBJECT_SUFFIX is ".obj". */
2876 if (do_obj
&& len
> 2
2877 && name
[len
- 2] == '.'
2878 && name
[len
- 1] == 'o')
2880 obstack_grow (&obstack
, name
, len
- 2);
2881 obstack_grow0 (&obstack
, TARGET_OBJECT_SUFFIX
, strlen (TARGET_OBJECT_SUFFIX
));
2882 name
= XOBFINISH (&obstack
, const char *);
2886 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2887 /* If there is no filetype, make it the executable suffix (which includes
2888 the "."). But don't get confused if we have just "-o". */
2889 if (! do_exe
|| TARGET_EXECUTABLE_SUFFIX
[0] == 0 || (len
== 2 && name
[0] == '-'))
2892 for (i
= len
- 1; i
>= 0; i
--)
2893 if (IS_DIR_SEPARATOR (name
[i
]))
2896 for (i
++; i
< len
; i
++)
2900 obstack_grow (&obstack
, name
, len
);
2901 obstack_grow0 (&obstack
, TARGET_EXECUTABLE_SUFFIX
,
2902 strlen (TARGET_EXECUTABLE_SUFFIX
));
2903 name
= XOBFINISH (&obstack
, const char *);
2910 /* Display the command line switches accepted by gcc. */
2914 printf (_("Usage: %s [options] file...\n"), progname
);
2915 fputs (_("Options:\n"), stdout
);
2917 fputs (_(" -pass-exit-codes Exit with highest error code from a phase\n"), stdout
);
2918 fputs (_(" --help Display this information\n"), stdout
);
2919 fputs (_(" --target-help Display target specific command line options\n"), stdout
);
2920 fputs (_(" --help={target|optimizers|warnings|params|[^]{joined|separate|undocumented}}[,...]\n"), stdout
);
2921 fputs (_(" Display specific types of command line options\n"), stdout
);
2923 fputs (_(" (Use '-v --help' to display command line options of sub-processes)\n"), stdout
);
2924 fputs (_(" --version Display compiler version information\n"), stdout
);
2925 fputs (_(" -dumpspecs Display all of the built in spec strings\n"), stdout
);
2926 fputs (_(" -dumpversion Display the version of the compiler\n"), stdout
);
2927 fputs (_(" -dumpmachine Display the compiler's target processor\n"), stdout
);
2928 fputs (_(" -print-search-dirs Display the directories in the compiler's search path\n"), stdout
);
2929 fputs (_(" -print-libgcc-file-name Display the name of the compiler's companion library\n"), stdout
);
2930 fputs (_(" -print-file-name=<lib> Display the full path to library <lib>\n"), stdout
);
2931 fputs (_(" -print-prog-name=<prog> Display the full path to compiler component <prog>\n"), stdout
);
2932 fputs (_(" -print-multi-directory Display the root directory for versions of libgcc\n"), stdout
);
2934 -print-multi-lib Display the mapping between command line options and\n\
2935 multiple library search directories\n"), stdout
);
2936 fputs (_(" -print-multi-os-directory Display the relative path to OS libraries\n"), stdout
);
2937 fputs (_(" -print-sysroot Display the target libraries directory\n"), stdout
);
2938 fputs (_(" -print-sysroot-headers-suffix Display the sysroot suffix used to find headers\n"), stdout
);
2939 fputs (_(" -Wa,<options> Pass comma-separated <options> on to the assembler\n"), stdout
);
2940 fputs (_(" -Wp,<options> Pass comma-separated <options> on to the preprocessor\n"), stdout
);
2941 fputs (_(" -Wl,<options> Pass comma-separated <options> on to the linker\n"), stdout
);
2942 fputs (_(" -Xassembler <arg> Pass <arg> on to the assembler\n"), stdout
);
2943 fputs (_(" -Xpreprocessor <arg> Pass <arg> on to the preprocessor\n"), stdout
);
2944 fputs (_(" -Xlinker <arg> Pass <arg> on to the linker\n"), stdout
);
2945 fputs (_(" -save-temps Do not delete intermediate files\n"), stdout
);
2946 fputs (_(" -save-temps=<arg> Do not delete intermediate files\n"), stdout
);
2948 -no-canonical-prefixes Do not canonicalize paths when building relative\n\
2949 prefixes to other gcc components\n"), stdout
);
2950 fputs (_(" -pipe Use pipes rather than intermediate files\n"), stdout
);
2951 fputs (_(" -time Time the execution of each subprocess\n"), stdout
);
2952 fputs (_(" -specs=<file> Override built-in specs with the contents of <file>\n"), stdout
);
2953 fputs (_(" -std=<standard> Assume that the input sources are for <standard>\n"), stdout
);
2955 --sysroot=<directory> Use <directory> as the root directory for headers\n\
2956 and libraries\n"), stdout
);
2957 fputs (_(" -B <directory> Add <directory> to the compiler's search paths\n"), stdout
);
2958 fputs (_(" -v Display the programs invoked by the compiler\n"), stdout
);
2959 fputs (_(" -### Like -v but options quoted and commands not executed\n"), stdout
);
2960 fputs (_(" -E Preprocess only; do not compile, assemble or link\n"), stdout
);
2961 fputs (_(" -S Compile only; do not assemble or link\n"), stdout
);
2962 fputs (_(" -c Compile and assemble, but do not link\n"), stdout
);
2963 fputs (_(" -o <file> Place the output into <file>\n"), stdout
);
2965 -x <language> Specify the language of the following input files\n\
2966 Permissible languages include: c c++ assembler none\n\
2967 'none' means revert to the default behavior of\n\
2968 guessing the language based on the file's extension\n\
2972 \nOptions starting with -g, -f, -m, -O, -W, or --param are automatically\n\
2973 passed on to the various sub-processes invoked by %s. In order to pass\n\
2974 other options on to these processes the -W<letter> options must be used.\n\
2977 /* The rest of the options are displayed by invocations of the various
2982 add_preprocessor_option (const char *option
, int len
)
2984 VEC_safe_push (char_p
, heap
, preprocessor_options
,
2985 save_string (option
, len
));
2989 add_assembler_option (const char *option
, int len
)
2991 VEC_safe_push (char_p
, heap
, assembler_options
, save_string (option
, len
));
2995 add_linker_option (const char *option
, int len
)
2997 VEC_safe_push (char_p
, heap
, linker_options
, save_string (option
, len
));
3000 /* Allocate space for an input file in infiles. */
3005 if (n_infiles_alloc
== 0)
3007 n_infiles_alloc
= 16;
3008 infiles
= XNEWVEC (struct infile
, n_infiles_alloc
);
3010 else if (n_infiles_alloc
== n_infiles
)
3012 n_infiles_alloc
*= 2;
3013 infiles
= XRESIZEVEC (struct infile
, infiles
, n_infiles_alloc
);
3017 /* Store an input file with the given NAME and LANGUAGE in
3021 add_infile (const char *name
, const char *language
)
3024 infiles
[n_infiles
].name
= name
;
3025 infiles
[n_infiles
++].language
= language
;
3028 /* Allocate space for a switch in switches. */
3033 if (n_switches_alloc
== 0)
3035 n_switches_alloc
= 16;
3036 switches
= XNEWVEC (struct switchstr
, n_switches_alloc
);
3038 else if (n_switches_alloc
== n_switches
)
3040 n_switches_alloc
*= 2;
3041 switches
= XRESIZEVEC (struct switchstr
, switches
, n_switches_alloc
);
3045 /* Save an option OPT with N_ARGS arguments in array ARGS, marking it
3046 as validated if VALIDATED. */
3049 save_switch (const char *opt
, size_t n_args
, const char *const *args
,
3053 switches
[n_switches
].part1
= opt
+ 1;
3055 switches
[n_switches
].args
= 0;
3058 switches
[n_switches
].args
= XNEWVEC (const char *, n_args
+ 1);
3059 memcpy (switches
[n_switches
].args
, args
, n_args
* sizeof (const char *));
3060 switches
[n_switches
].args
[n_args
] = NULL
;
3063 switches
[n_switches
].live_cond
= 0;
3064 switches
[n_switches
].validated
= validated
;
3065 switches
[n_switches
].ordering
= 0;
3069 /* Handle an option DECODED that is unknown to the option-processing
3070 machinery, but may be known to specs. */
3073 driver_unknown_option_callback (const struct cl_decoded_option
*decoded
)
3075 save_switch (decoded
->canonical_option
[0],
3076 decoded
->canonical_option_num_elements
- 1,
3077 &decoded
->canonical_option
[1], false);
3082 /* Handle an option DECODED that is not marked as CL_DRIVER.
3083 LANG_MASK will always be CL_DRIVER. */
3086 driver_wrong_lang_callback (const struct cl_decoded_option
*decoded
,
3087 unsigned int lang_mask ATTRIBUTE_UNUSED
)
3089 /* At this point, non-driver options are accepted (and expected to
3090 be passed down by specs) unless marked to be rejected by the
3091 driver. Options to be rejected by the driver but accepted by the
3092 compilers proper are treated just like completely unknown
3094 const struct cl_option
*option
= &cl_options
[decoded
->opt_index
];
3096 if (option
->flags
& CL_REJECT_DRIVER
)
3097 error ("unrecognized command line option %qs",
3098 decoded
->orig_option_with_args_text
);
3100 driver_unknown_option_callback (decoded
);
3103 /* Note that an option (index OPT_INDEX, argument ARG, value VALUE)
3104 has been successfully handled with a handler for mask MASK. */
3107 driver_post_handling_callback (const struct cl_decoded_option
*decoded ATTRIBUTE_UNUSED
,
3108 unsigned int mask ATTRIBUTE_UNUSED
)
3110 /* Nothing to do here. */
3113 static const char *spec_lang
= 0;
3114 static int last_language_n_infiles
;
3116 /* Handle a driver option; arguments and return value as for
3120 driver_handle_option (struct gcc_options
*opts
,
3121 struct gcc_options
*opts_set
,
3122 const struct cl_decoded_option
*decoded
,
3123 unsigned int lang_mask ATTRIBUTE_UNUSED
, int kind
,
3125 const struct cl_option_handlers
*handlers ATTRIBUTE_UNUSED
,
3126 diagnostic_context
*dc
)
3128 size_t opt_index
= decoded
->opt_index
;
3129 const char *arg
= decoded
->arg
;
3130 const char *compare_debug_replacement_opt
;
3131 int value
= decoded
->value
;
3132 bool validated
= false;
3133 bool do_save
= true;
3135 gcc_assert (opts
== &global_options
);
3136 gcc_assert (opts_set
== &global_options_set
);
3137 gcc_assert (kind
== DK_UNSPECIFIED
);
3138 gcc_assert (loc
== UNKNOWN_LOCATION
);
3139 gcc_assert (dc
== global_dc
);
3145 struct spec_list
*sl
;
3147 for (sl
= specs
; sl
; sl
= sl
->next
)
3148 printf ("*%s:\n%s\n\n", sl
->name
, *(sl
->ptr_spec
));
3149 if (link_command_spec
)
3150 printf ("*link_command:\n%s\n\n", link_command_spec
);
3154 case OPT_dumpversion
:
3155 printf ("%s\n", spec_version
);
3158 case OPT_dumpmachine
:
3159 printf ("%s\n", spec_machine
);
3165 /* CPP driver cannot obtain switch from cc1_options. */
3167 add_preprocessor_option ("--version", strlen ("--version"));
3168 add_assembler_option ("--version", strlen ("--version"));
3169 add_linker_option ("--version", strlen ("--version"));
3173 print_help_list
= 1;
3175 /* CPP driver cannot obtain switch from cc1_options. */
3177 add_preprocessor_option ("--help", 6);
3178 add_assembler_option ("--help", 6);
3179 add_linker_option ("--help", 6);
3183 print_subprocess_help
= 2;
3186 case OPT__target_help
:
3187 print_subprocess_help
= 1;
3189 /* CPP driver cannot obtain switch from cc1_options. */
3191 add_preprocessor_option ("--target-help", 13);
3192 add_assembler_option ("--target-help", 13);
3193 add_linker_option ("--target-help", 13);
3196 case OPT_pass_exit_codes
:
3197 case OPT_print_search_dirs
:
3198 case OPT_print_file_name_
:
3199 case OPT_print_prog_name_
:
3200 case OPT_print_multi_lib
:
3201 case OPT_print_multi_directory
:
3202 case OPT_print_sysroot
:
3203 case OPT_print_multi_os_directory
:
3204 case OPT_print_sysroot_headers_suffix
:
3207 /* These options set the variables specified in common.opt
3208 automatically, and do not need to be saved for spec
3213 case OPT_print_libgcc_file_name
:
3214 print_file_name
= "libgcc.a";
3218 case OPT_fcompare_debug_second
:
3219 compare_debug_second
= 1;
3222 case OPT_fcompare_debug
:
3226 compare_debug_replacement_opt
= "-fcompare-debug=";
3228 goto compare_debug_with_arg
;
3231 compare_debug_replacement_opt
= "-fcompare-debug=-gtoggle";
3233 goto compare_debug_with_arg
;
3240 case OPT_fcompare_debug_
:
3241 compare_debug_replacement_opt
= decoded
->canonical_option
[0];
3242 compare_debug_with_arg
:
3243 gcc_assert (decoded
->canonical_option_num_elements
== 1);
3244 gcc_assert (arg
!= NULL
);
3249 if (compare_debug
< 0)
3250 compare_debug_opt
= NULL
;
3252 compare_debug_opt
= arg
;
3253 save_switch (compare_debug_replacement_opt
, 0, NULL
, validated
);
3259 /* Pass the rest of this option to the assembler. */
3261 /* Split the argument at commas. */
3263 for (j
= 0; arg
[j
]; j
++)
3266 add_assembler_option (arg
+ prev
, j
- prev
);
3270 /* Record the part after the last comma. */
3271 add_assembler_option (arg
+ prev
, j
- prev
);
3279 /* Pass the rest of this option to the preprocessor. */
3281 /* Split the argument at commas. */
3283 for (j
= 0; arg
[j
]; j
++)
3286 add_preprocessor_option (arg
+ prev
, j
- prev
);
3290 /* Record the part after the last comma. */
3291 add_preprocessor_option (arg
+ prev
, j
- prev
);
3299 /* Split the argument at commas. */
3301 for (j
= 0; arg
[j
]; j
++)
3304 add_infile (save_string (arg
+ prev
, j
- prev
), "*");
3307 /* Record the part after the last comma. */
3308 add_infile (arg
+ prev
, "*");
3314 add_infile (arg
, "*");
3318 case OPT_Xpreprocessor
:
3319 add_preprocessor_option (arg
, strlen (arg
));
3323 case OPT_Xassembler
:
3324 add_assembler_option (arg
, strlen (arg
));
3329 /* POSIX allows separation of -l and the lib arg; canonicalize
3330 by concatenating -l with its arg */
3331 add_infile (concat ("-l", arg
, NULL
), "*");
3336 /* Similarly, canonicalize -L for linkers that may not accept
3337 separate arguments. */
3338 save_switch (concat ("-L", arg
, NULL
), 0, NULL
, validated
);
3343 save_switch (concat ("-F", arg
, NULL
), 0, NULL
, validated
);
3346 case OPT_save_temps
:
3347 save_temps_flag
= SAVE_TEMPS_CWD
;
3351 case OPT_save_temps_
:
3352 if (strcmp (arg
, "cwd") == 0)
3353 save_temps_flag
= SAVE_TEMPS_CWD
;
3354 else if (strcmp (arg
, "obj") == 0
3355 || strcmp (arg
, "object") == 0)
3356 save_temps_flag
= SAVE_TEMPS_OBJ
;
3358 fatal_error ("%qs is an unknown -save-temps option",
3359 decoded
->orig_option_with_args_text
);
3362 case OPT_no_canonical_prefixes
:
3363 /* Already handled as a special case, so ignored here. */
3369 /* These options set the variables specified in common.opt
3370 automatically, but do need to be saved for spec
3376 struct user_specs
*user
= XNEW (struct user_specs
);
3378 user
->next
= (struct user_specs
*) 0;
3379 user
->filename
= arg
;
3380 if (user_specs_tail
)
3381 user_specs_tail
->next
= user
;
3383 user_specs_head
= user
;
3384 user_specs_tail
= user
;
3390 target_system_root
= arg
;
3391 target_system_root_changed
= 1;
3396 if (report_times_to_file
)
3397 fclose (report_times_to_file
);
3398 report_times_to_file
= fopen (arg
, "a");
3404 This is similar to -v except that there is no execution
3405 of the commands and the echoed arguments are quoted. It
3406 is intended for use in shell scripts to capture the
3407 driver-generated command line. */
3408 verbose_only_flag
++;
3415 size_t len
= strlen (arg
);
3417 /* Catch the case where the user has forgotten to append a
3418 directory separator to the path. Note, they may be using
3419 -B to add an executable name prefix, eg "i386-elf-", in
3420 order to distinguish between multiple installations of
3421 GCC in the same directory. Hence we must check to see
3422 if appending a directory separator actually makes a
3423 valid directory name. */
3424 if (!IS_DIR_SEPARATOR (arg
[len
- 1])
3425 && is_directory (arg
, false))
3427 char *tmp
= XNEWVEC (char, len
+ 2);
3429 tmp
[len
] = DIR_SEPARATOR
;
3434 add_prefix (&exec_prefixes
, arg
, NULL
,
3435 PREFIX_PRIORITY_B_OPT
, 0, 0);
3436 add_prefix (&startfile_prefixes
, arg
, NULL
,
3437 PREFIX_PRIORITY_B_OPT
, 0, 0);
3438 add_prefix (&include_prefixes
, arg
, NULL
,
3439 PREFIX_PRIORITY_B_OPT
, 0, 0);
3446 if (!strcmp (spec_lang
, "none"))
3447 /* Suppress the warning if -xnone comes after the last input
3448 file, because alternate command interfaces like g++ might
3449 find it useful to place -xnone after each input file. */
3452 last_language_n_infiles
= n_infiles
;
3458 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX) || defined(HAVE_TARGET_OBJECT_SUFFIX)
3459 arg
= convert_filename (arg
, ! have_c
, 0);
3461 /* Save the output name in case -save-temps=obj was used. */
3462 save_temps_prefix
= xstrdup (arg
);
3463 /* On some systems, ld cannot handle "-o" without a space. So
3464 split the option from its argument. */
3465 save_switch ("-o", 1, &arg
, validated
);
3468 case OPT_static_libgcc
:
3469 case OPT_shared_libgcc
:
3470 case OPT_static_libgfortran
:
3471 case OPT_static_libstdc__
:
3472 /* These are always valid, since gcc.c itself understands the
3473 first two, gfortranspec.c understands -static-libgfortran and
3474 g++spec.c understands -static-libstdc++ */
3479 /* Various driver options need no special processing at this
3480 point, having been handled in a prescan above or being
3481 handled by specs. */
3486 save_switch (decoded
->canonical_option
[0],
3487 decoded
->canonical_option_num_elements
- 1,
3488 &decoded
->canonical_option
[1], validated
);
3492 /* Put the driver's standard set of option handlers in *HANDLERS. */
3495 set_option_handlers (struct cl_option_handlers
*handlers
)
3497 handlers
->unknown_option_callback
= driver_unknown_option_callback
;
3498 handlers
->wrong_lang_callback
= driver_wrong_lang_callback
;
3499 handlers
->post_handling_callback
= driver_post_handling_callback
;
3500 handlers
->num_handlers
= 1;
3501 handlers
->handlers
[0].handler
= driver_handle_option
;
3502 handlers
->handlers
[0].mask
= CL_DRIVER
;
3505 /* Create the vector `switches' and its contents.
3506 Store its length in `n_switches'. */
3509 process_command (unsigned int decoded_options_count
,
3510 struct cl_decoded_option
*decoded_options
)
3514 const char *tooldir_prefix
;
3515 char *(*get_relative_prefix
) (const char *, const char *,
3516 const char *) = NULL
;
3517 struct cl_option_handlers handlers
;
3520 gcc_exec_prefix
= getenv ("GCC_EXEC_PREFIX");
3524 added_libraries
= 0;
3526 /* Figure compiler version from version string. */
3528 compiler_version
= temp1
= xstrdup (version_string
);
3530 for (; *temp1
; ++temp1
)
3539 /* Handle any -no-canonical-prefixes flag early, to assign the function
3540 that builds relative prefixes. This function creates default search
3541 paths that are needed later in normal option handling. */
3543 for (j
= 1; j
< decoded_options_count
; j
++)
3545 if (decoded_options
[j
].opt_index
== OPT_no_canonical_prefixes
)
3547 get_relative_prefix
= make_relative_prefix_ignore_links
;
3551 if (! get_relative_prefix
)
3552 get_relative_prefix
= make_relative_prefix
;
3554 /* Set up the default search paths. If there is no GCC_EXEC_PREFIX,
3555 see if we can create it from the pathname specified in
3556 decoded_options[0].arg. */
3558 gcc_libexec_prefix
= standard_libexec_prefix
;
3560 /* FIXME: make_relative_prefix doesn't yet work for VMS. */
3561 if (!gcc_exec_prefix
)
3563 gcc_exec_prefix
= get_relative_prefix (decoded_options
[0].arg
,
3564 standard_bindir_prefix
,
3565 standard_exec_prefix
);
3566 gcc_libexec_prefix
= get_relative_prefix (decoded_options
[0].arg
,
3567 standard_bindir_prefix
,
3568 standard_libexec_prefix
);
3569 if (gcc_exec_prefix
)
3570 xputenv (concat ("GCC_EXEC_PREFIX=", gcc_exec_prefix
, NULL
));
3574 /* make_relative_prefix requires a program name, but
3575 GCC_EXEC_PREFIX is typically a directory name with a trailing
3576 / (which is ignored by make_relative_prefix), so append a
3578 char *tmp_prefix
= concat (gcc_exec_prefix
, "gcc", NULL
);
3579 gcc_libexec_prefix
= get_relative_prefix (tmp_prefix
,
3580 standard_exec_prefix
,
3581 standard_libexec_prefix
);
3583 /* The path is unrelocated, so fallback to the original setting. */
3584 if (!gcc_libexec_prefix
)
3585 gcc_libexec_prefix
= standard_libexec_prefix
;
3591 /* From this point onward, gcc_exec_prefix is non-null if the toolchain
3592 is relocated. The toolchain was either relocated using GCC_EXEC_PREFIX
3593 or an automatically created GCC_EXEC_PREFIX from
3594 decoded_options[0].arg. */
3596 /* Do language-specific adjustment/addition of flags. */
3597 lang_specific_driver (&decoded_options
, &decoded_options_count
,
3600 if (gcc_exec_prefix
)
3602 int len
= strlen (gcc_exec_prefix
);
3604 if (len
> (int) sizeof ("/lib/gcc/") - 1
3605 && (IS_DIR_SEPARATOR (gcc_exec_prefix
[len
-1])))
3607 temp
= gcc_exec_prefix
+ len
- sizeof ("/lib/gcc/") + 1;
3608 if (IS_DIR_SEPARATOR (*temp
)
3609 && strncmp (temp
+ 1, "lib", 3) == 0
3610 && IS_DIR_SEPARATOR (temp
[4])
3611 && strncmp (temp
+ 5, "gcc", 3) == 0)
3612 len
-= sizeof ("/lib/gcc/") - 1;
3615 set_std_prefix (gcc_exec_prefix
, len
);
3616 add_prefix (&exec_prefixes
, gcc_libexec_prefix
, "GCC",
3617 PREFIX_PRIORITY_LAST
, 0, 0);
3618 add_prefix (&startfile_prefixes
, gcc_exec_prefix
, "GCC",
3619 PREFIX_PRIORITY_LAST
, 0, 0);
3622 /* COMPILER_PATH and LIBRARY_PATH have values
3623 that are lists of directory names with colons. */
3625 temp
= getenv ("COMPILER_PATH");
3628 const char *startp
, *endp
;
3629 char *nstore
= (char *) alloca (strlen (temp
) + 3);
3631 startp
= endp
= temp
;
3634 if (*endp
== PATH_SEPARATOR
|| *endp
== 0)
3636 strncpy (nstore
, startp
, endp
- startp
);
3638 strcpy (nstore
, concat (".", dir_separator_str
, NULL
));
3639 else if (!IS_DIR_SEPARATOR (endp
[-1]))
3641 nstore
[endp
- startp
] = DIR_SEPARATOR
;
3642 nstore
[endp
- startp
+ 1] = 0;
3645 nstore
[endp
- startp
] = 0;
3646 add_prefix (&exec_prefixes
, nstore
, 0,
3647 PREFIX_PRIORITY_LAST
, 0, 0);
3648 add_prefix (&include_prefixes
, nstore
, 0,
3649 PREFIX_PRIORITY_LAST
, 0, 0);
3652 endp
= startp
= endp
+ 1;
3659 temp
= getenv (LIBRARY_PATH_ENV
);
3660 if (temp
&& *cross_compile
== '0')
3662 const char *startp
, *endp
;
3663 char *nstore
= (char *) alloca (strlen (temp
) + 3);
3665 startp
= endp
= temp
;
3668 if (*endp
== PATH_SEPARATOR
|| *endp
== 0)
3670 strncpy (nstore
, startp
, endp
- startp
);
3672 strcpy (nstore
, concat (".", dir_separator_str
, NULL
));
3673 else if (!IS_DIR_SEPARATOR (endp
[-1]))
3675 nstore
[endp
- startp
] = DIR_SEPARATOR
;
3676 nstore
[endp
- startp
+ 1] = 0;
3679 nstore
[endp
- startp
] = 0;
3680 add_prefix (&startfile_prefixes
, nstore
, NULL
,
3681 PREFIX_PRIORITY_LAST
, 0, 1);
3684 endp
= startp
= endp
+ 1;
3691 /* Use LPATH like LIBRARY_PATH (for the CMU build program). */
3692 temp
= getenv ("LPATH");
3693 if (temp
&& *cross_compile
== '0')
3695 const char *startp
, *endp
;
3696 char *nstore
= (char *) alloca (strlen (temp
) + 3);
3698 startp
= endp
= temp
;
3701 if (*endp
== PATH_SEPARATOR
|| *endp
== 0)
3703 strncpy (nstore
, startp
, endp
- startp
);
3705 strcpy (nstore
, concat (".", dir_separator_str
, NULL
));
3706 else if (!IS_DIR_SEPARATOR (endp
[-1]))
3708 nstore
[endp
- startp
] = DIR_SEPARATOR
;
3709 nstore
[endp
- startp
+ 1] = 0;
3712 nstore
[endp
- startp
] = 0;
3713 add_prefix (&startfile_prefixes
, nstore
, NULL
,
3714 PREFIX_PRIORITY_LAST
, 0, 1);
3717 endp
= startp
= endp
+ 1;
3724 /* Process the options and store input files and switches in their
3727 last_language_n_infiles
= -1;
3729 set_option_handlers (&handlers
);
3731 for (j
= 1; j
< decoded_options_count
; j
++)
3733 switch (decoded_options
[j
].opt_index
)
3745 for (j
= 1; j
< decoded_options_count
; j
++)
3747 if (decoded_options
[j
].opt_index
== OPT_SPECIAL_input_file
)
3749 const char *arg
= decoded_options
[j
].arg
;
3750 const char *p
= strrchr (arg
, '@');
3754 #ifdef HAVE_TARGET_OBJECT_SUFFIX
3755 arg
= convert_filename (arg
, 0, access (arg
, F_OK
));
3757 /* For LTO static archive support we handle input file
3758 specifications that are composed of a filename and
3759 an offset like FNAME@OFFSET. */
3762 && sscanf (p
, "@%li%n", &offset
, &consumed
) >= 1
3763 && strlen (p
) == (unsigned int)consumed
)
3765 fname
= (char *)xmalloc (p
- arg
+ 1);
3766 memcpy (fname
, arg
, p
- arg
);
3767 fname
[p
- arg
] = '\0';
3768 /* Only accept non-stdin and existing FNAME parts, otherwise
3769 try with the full name. */
3770 if (strcmp (fname
, "-") == 0 || access (fname
, F_OK
) < 0)
3773 fname
= xstrdup (arg
);
3777 fname
= xstrdup (arg
);
3779 if (strcmp (fname
, "-") != 0 && access (fname
, F_OK
) < 0)
3780 perror_with_name (fname
);
3782 add_infile (arg
, spec_lang
);
3788 read_cmdline_option (&global_options
, &global_options_set
,
3789 decoded_options
+ j
, UNKNOWN_LOCATION
,
3790 CL_DRIVER
, &handlers
, global_dc
);
3793 /* If -save-temps=obj and -o name, create the prefix to use for %b.
3794 Otherwise just make -save-temps=obj the same as -save-temps=cwd. */
3795 if (save_temps_flag
== SAVE_TEMPS_OBJ
&& save_temps_prefix
!= NULL
)
3797 save_temps_length
= strlen (save_temps_prefix
);
3798 temp
= strrchr (lbasename (save_temps_prefix
), '.');
3801 save_temps_length
-= strlen (temp
);
3802 save_temps_prefix
[save_temps_length
] = '\0';
3806 else if (save_temps_prefix
!= NULL
)
3808 free (save_temps_prefix
);
3809 save_temps_prefix
= NULL
;
3812 if (save_temps_flag
&& use_pipes
)
3814 /* -save-temps overrides -pipe, so that temp files are produced */
3815 if (save_temps_flag
)
3816 warning (0, "-pipe ignored because -save-temps specified");
3822 const char *gcd
= getenv ("GCC_COMPARE_DEBUG");
3824 if (gcd
&& gcd
[0] == '-')
3827 compare_debug_opt
= gcd
;
3829 else if (gcd
&& *gcd
&& strcmp (gcd
, "0"))
3832 compare_debug_opt
= "-gtoggle";
3835 else if (compare_debug
< 0)
3838 gcc_assert (!compare_debug_opt
);
3841 /* Set up the search paths. We add directories that we expect to
3842 contain GNU Toolchain components before directories specified by
3843 the machine description so that we will find GNU components (like
3844 the GNU assembler) before those of the host system. */
3846 /* If we don't know where the toolchain has been installed, use the
3847 configured-in locations. */
3848 if (!gcc_exec_prefix
)
3851 add_prefix (&exec_prefixes
, standard_libexec_prefix
, "GCC",
3852 PREFIX_PRIORITY_LAST
, 1, 0);
3853 add_prefix (&exec_prefixes
, standard_libexec_prefix
, "BINUTILS",
3854 PREFIX_PRIORITY_LAST
, 2, 0);
3855 add_prefix (&exec_prefixes
, standard_exec_prefix
, "BINUTILS",
3856 PREFIX_PRIORITY_LAST
, 2, 0);
3858 add_prefix (&startfile_prefixes
, standard_exec_prefix
, "BINUTILS",
3859 PREFIX_PRIORITY_LAST
, 1, 0);
3862 gcc_assert (!IS_ABSOLUTE_PATH (tooldir_base_prefix
));
3863 tooldir_prefix
= concat (tooldir_base_prefix
, spec_machine
,
3864 dir_separator_str
, NULL
);
3866 /* Look for tools relative to the location from which the driver is
3867 running, or, if that is not available, the configured prefix. */
3869 = concat (gcc_exec_prefix
? gcc_exec_prefix
: standard_exec_prefix
,
3870 spec_machine
, dir_separator_str
,
3871 spec_version
, dir_separator_str
, tooldir_prefix
, NULL
);
3873 add_prefix (&exec_prefixes
,
3874 concat (tooldir_prefix
, "bin", dir_separator_str
, NULL
),
3875 "BINUTILS", PREFIX_PRIORITY_LAST
, 0, 0);
3876 add_prefix (&startfile_prefixes
,
3877 concat (tooldir_prefix
, "lib", dir_separator_str
, NULL
),
3878 "BINUTILS", PREFIX_PRIORITY_LAST
, 0, 1);
3880 #if defined(TARGET_SYSTEM_ROOT_RELOCATABLE) && !defined(VMS)
3881 /* If the normal TARGET_SYSTEM_ROOT is inside of $exec_prefix,
3882 then consider it to relocate with the rest of the GCC installation
3883 if GCC_EXEC_PREFIX is set.
3884 ``make_relative_prefix'' is not compiled for VMS, so don't call it. */
3885 if (target_system_root
&& !target_system_root_changed
&& gcc_exec_prefix
)
3887 char *tmp_prefix
= get_relative_prefix (decoded_options
[0].arg
,
3888 standard_bindir_prefix
,
3889 target_system_root
);
3890 if (tmp_prefix
&& access_check (tmp_prefix
, F_OK
) == 0)
3892 target_system_root
= tmp_prefix
;
3893 target_system_root_changed
= 1;
3898 /* More prefixes are enabled in main, after we read the specs file
3899 and determine whether this is cross-compilation or not. */
3901 if (n_infiles
== last_language_n_infiles
&& spec_lang
!= 0)
3902 warning (0, "%<-x %s%> after last input file has no effect", spec_lang
);
3904 if (compare_debug
== 2 || compare_debug
== 3)
3907 switches
[n_switches
].part1
= concat ("fcompare-debug=",
3910 switches
[n_switches
].args
= 0;
3911 switches
[n_switches
].live_cond
= 0;
3912 switches
[n_switches
].validated
= 0;
3913 switches
[n_switches
].ordering
= 0;
3918 /* Ensure we only invoke each subprocess once. */
3919 if (print_subprocess_help
|| print_help_list
|| print_version
)
3923 /* Create a dummy input file, so that we can pass
3924 the help option on to the various sub-processes. */
3925 add_infile ("help-dummy", "c");
3929 switches
[n_switches
].part1
= 0;
3931 infiles
[n_infiles
].name
= 0;
3934 /* Store switches not filtered out by %<S in spec in COLLECT_GCC_OPTIONS
3935 and place that in the environment. */
3938 set_collect_gcc_options (void)
3943 /* Build COLLECT_GCC_OPTIONS to have all of the options specified to
3945 obstack_grow (&collect_obstack
, "COLLECT_GCC_OPTIONS=",
3946 sizeof ("COLLECT_GCC_OPTIONS=") - 1);
3949 for (i
= 0; (int) i
< n_switches
; i
++)
3951 const char *const *args
;
3954 obstack_grow (&collect_obstack
, " ", 1);
3958 /* Ignore elided switches. */
3959 if ((switches
[i
].live_cond
3960 & (SWITCH_IGNORE
| SWITCH_KEEP_FOR_GCC
))
3964 obstack_grow (&collect_obstack
, "'-", 2);
3965 q
= switches
[i
].part1
;
3966 while ((p
= strchr (q
, '\'')))
3968 obstack_grow (&collect_obstack
, q
, p
- q
);
3969 obstack_grow (&collect_obstack
, "'\\''", 4);
3972 obstack_grow (&collect_obstack
, q
, strlen (q
));
3973 obstack_grow (&collect_obstack
, "'", 1);
3975 for (args
= switches
[i
].args
; args
&& *args
; args
++)
3977 obstack_grow (&collect_obstack
, " '", 2);
3979 while ((p
= strchr (q
, '\'')))
3981 obstack_grow (&collect_obstack
, q
, p
- q
);
3982 obstack_grow (&collect_obstack
, "'\\''", 4);
3985 obstack_grow (&collect_obstack
, q
, strlen (q
));
3986 obstack_grow (&collect_obstack
, "'", 1);
3989 obstack_grow (&collect_obstack
, "\0", 1);
3990 xputenv (XOBFINISH (&collect_obstack
, char *));
3993 /* Process a spec string, accumulating and running commands. */
3995 /* These variables describe the input file name.
3996 input_file_number is the index on outfiles of this file,
3997 so that the output file name can be stored for later use by %o.
3998 input_basename is the start of the part of the input file
3999 sans all directory names, and basename_length is the number
4000 of characters starting there excluding the suffix .c or whatever. */
4002 static const char *gcc_input_filename
;
4003 static int input_file_number
;
4004 size_t input_filename_length
;
4005 static int basename_length
;
4006 static int suffixed_basename_length
;
4007 static const char *input_basename
;
4008 static const char *input_suffix
;
4009 #ifndef HOST_LACKS_INODE_NUMBERS
4010 static struct stat input_stat
;
4012 static int input_stat_set
;
4014 /* The compiler used to process the current input file. */
4015 static struct compiler
*input_file_compiler
;
4017 /* These are variables used within do_spec and do_spec_1. */
4019 /* Nonzero if an arg has been started and not yet terminated
4020 (with space, tab or newline). */
4021 static int arg_going
;
4023 /* Nonzero means %d or %g has been seen; the next arg to be terminated
4024 is a temporary file name. */
4025 static int delete_this_arg
;
4027 /* Nonzero means %w has been seen; the next arg to be terminated
4028 is the output file name of this compilation. */
4029 static int this_is_output_file
;
4031 /* Nonzero means %s has been seen; the next arg to be terminated
4032 is the name of a library file and we should try the standard
4033 search dirs for it. */
4034 static int this_is_library_file
;
4036 /* Nonzero means %T has been seen; the next arg to be terminated
4037 is the name of a linker script and we should try all of the
4038 standard search dirs for it. If it is found insert a --script
4039 command line switch and then substitute the full path in place,
4040 otherwise generate an error message. */
4041 static int this_is_linker_script
;
4043 /* Nonzero means that the input of this command is coming from a pipe. */
4044 static int input_from_pipe
;
4046 /* Nonnull means substitute this for any suffix when outputting a switches
4048 static const char *suffix_subst
;
4050 /* If there is an argument being accumulated, terminate it and store it. */
4053 end_going_arg (void)
4059 obstack_1grow (&obstack
, 0);
4060 string
= XOBFINISH (&obstack
, const char *);
4061 if (this_is_library_file
)
4062 string
= find_file (string
);
4063 if (this_is_linker_script
)
4065 char * full_script_path
= find_a_file (&startfile_prefixes
, string
, R_OK
, true);
4067 if (full_script_path
== NULL
)
4069 error ("unable to locate default linker script %qs in the library search paths", string
);
4070 /* Script was not found on search path. */
4073 store_arg ("--script", false, false);
4074 string
= full_script_path
;
4076 store_arg (string
, delete_this_arg
, this_is_output_file
);
4077 if (this_is_output_file
)
4078 outfiles
[input_file_number
] = string
;
4084 /* Parse the WRAPPER string which is a comma separated list of the command line
4085 and insert them into the beginning of argbuf. */
4088 insert_wrapper (const char *wrapper
)
4092 char *buf
= xstrdup (wrapper
);
4094 unsigned int old_length
= VEC_length (const_char_p
, argbuf
);
4102 while ((p
= strchr (p
, ',')) != NULL
);
4104 VEC_safe_grow (const_char_p
, heap
, argbuf
, old_length
+ n
);
4105 memmove (VEC_address (const_char_p
, argbuf
) + n
,
4106 VEC_address (const_char_p
, argbuf
),
4107 old_length
* sizeof (const_char_p
));
4118 VEC_replace (const_char_p
, argbuf
, i
, p
);
4121 while ((p
= strchr (p
, ',')) != NULL
);
4122 gcc_assert (i
== n
);
4125 /* Process the spec SPEC and run the commands specified therein.
4126 Returns 0 if the spec is successfully processed; -1 if failed. */
4129 do_spec (const char *spec
)
4133 value
= do_spec_2 (spec
);
4135 /* Force out any unfinished command.
4136 If -pipe, this forces out the last command if it ended in `|'. */
4139 if (VEC_length (const_char_p
, argbuf
) > 0
4140 && !strcmp (VEC_last (const_char_p
, argbuf
), "|"))
4141 VEC_pop (const_char_p
, argbuf
);
4143 set_collect_gcc_options ();
4145 if (VEC_length (const_char_p
, argbuf
) > 0)
4153 do_spec_2 (const char *spec
)
4159 delete_this_arg
= 0;
4160 this_is_output_file
= 0;
4161 this_is_library_file
= 0;
4162 this_is_linker_script
= 0;
4163 input_from_pipe
= 0;
4164 suffix_subst
= NULL
;
4166 result
= do_spec_1 (spec
, 0, NULL
);
4174 /* Process the given spec string and add any new options to the end
4175 of the switches/n_switches array. */
4178 do_option_spec (const char *name
, const char *spec
)
4180 unsigned int i
, value_count
, value_len
;
4181 const char *p
, *q
, *value
;
4182 char *tmp_spec
, *tmp_spec_p
;
4184 if (configure_default_options
[0].name
== NULL
)
4187 for (i
= 0; i
< ARRAY_SIZE (configure_default_options
); i
++)
4188 if (strcmp (configure_default_options
[i
].name
, name
) == 0)
4190 if (i
== ARRAY_SIZE (configure_default_options
))
4193 value
= configure_default_options
[i
].value
;
4194 value_len
= strlen (value
);
4196 /* Compute the size of the final spec. */
4199 while ((p
= strstr (p
, "%(VALUE)")) != NULL
)
4205 /* Replace each %(VALUE) by the specified value. */
4206 tmp_spec
= (char *) alloca (strlen (spec
) + 1
4207 + value_count
* (value_len
- strlen ("%(VALUE)")));
4208 tmp_spec_p
= tmp_spec
;
4210 while ((p
= strstr (q
, "%(VALUE)")) != NULL
)
4212 memcpy (tmp_spec_p
, q
, p
- q
);
4213 tmp_spec_p
= tmp_spec_p
+ (p
- q
);
4214 memcpy (tmp_spec_p
, value
, value_len
);
4215 tmp_spec_p
+= value_len
;
4216 q
= p
+ strlen ("%(VALUE)");
4218 strcpy (tmp_spec_p
, q
);
4220 do_self_spec (tmp_spec
);
4223 /* Process the given spec string and add any new options to the end
4224 of the switches/n_switches array. */
4227 do_self_spec (const char *spec
)
4232 do_spec_1 (" ", 0, NULL
);
4234 /* Mark %<S switches processed by do_self_spec to be ignored permanently.
4235 do_self_specs adds the replacements to switches array, so it shouldn't
4236 be processed afterwards. */
4237 for (i
= 0; i
< n_switches
; i
++)
4238 if ((switches
[i
].live_cond
& SWITCH_IGNORE
))
4239 switches
[i
].live_cond
|= SWITCH_IGNORE_PERMANENTLY
;
4241 if (VEC_length (const_char_p
, argbuf
) > 0)
4243 const char **argbuf_copy
;
4244 struct cl_decoded_option
*decoded_options
;
4245 struct cl_option_handlers handlers
;
4246 unsigned int decoded_options_count
;
4249 /* Create a copy of argbuf with a dummy argv[0] entry for
4250 decode_cmdline_options_to_array. */
4251 argbuf_copy
= XNEWVEC (const char *,
4252 VEC_length (const_char_p
, argbuf
) + 1);
4253 argbuf_copy
[0] = "";
4254 memcpy (argbuf_copy
+ 1, VEC_address (const_char_p
, argbuf
),
4255 VEC_length (const_char_p
, argbuf
) * sizeof (const char *));
4257 decode_cmdline_options_to_array (VEC_length (const_char_p
, argbuf
) + 1,
4259 CL_DRIVER
, &decoded_options
,
4260 &decoded_options_count
);
4262 set_option_handlers (&handlers
);
4264 for (j
= 1; j
< decoded_options_count
; j
++)
4266 switch (decoded_options
[j
].opt_index
)
4268 case OPT_SPECIAL_input_file
:
4269 /* Specs should only generate options, not input
4271 if (strcmp (decoded_options
[j
].arg
, "-") != 0)
4272 fatal_error ("switch %qs does not start with %<-%>",
4273 decoded_options
[j
].arg
);
4275 fatal_error ("spec-generated switch is just %<-%>");
4278 case OPT_fcompare_debug_second
:
4279 case OPT_fcompare_debug
:
4280 case OPT_fcompare_debug_
:
4282 /* Avoid duplicate processing of some options from
4283 compare-debug specs; just save them here. */
4284 save_switch (decoded_options
[j
].canonical_option
[0],
4285 (decoded_options
[j
].canonical_option_num_elements
4287 &decoded_options
[j
].canonical_option
[1], false);
4291 read_cmdline_option (&global_options
, &global_options_set
,
4292 decoded_options
+ j
, UNKNOWN_LOCATION
,
4293 CL_DRIVER
, &handlers
, global_dc
);
4299 switches
[n_switches
].part1
= 0;
4303 /* Callback for processing %D and %I specs. */
4305 struct spec_path_info
{
4310 bool separate_options
;
4314 spec_path (char *path
, void *data
)
4316 struct spec_path_info
*info
= (struct spec_path_info
*) data
;
4320 if (info
->omit_relative
&& !IS_ABSOLUTE_PATH (path
))
4323 if (info
->append_len
!= 0)
4325 len
= strlen (path
);
4326 memcpy (path
+ len
, info
->append
, info
->append_len
+ 1);
4329 if (!is_directory (path
, true))
4332 do_spec_1 (info
->option
, 1, NULL
);
4333 if (info
->separate_options
)
4334 do_spec_1 (" ", 0, NULL
);
4336 if (info
->append_len
== 0)
4338 len
= strlen (path
);
4339 save
= path
[len
- 1];
4340 if (IS_DIR_SEPARATOR (path
[len
- 1]))
4341 path
[len
- 1] = '\0';
4344 do_spec_1 (path
, 1, NULL
);
4345 do_spec_1 (" ", 0, NULL
);
4347 /* Must not damage the original path. */
4348 if (info
->append_len
== 0)
4349 path
[len
- 1] = save
;
4354 /* Create a temporary FILE with the contents of ARGV. Add @FILE to the
4358 create_at_file (char **argv
)
4360 char *temp_file
= make_temp_file ("");
4361 char *at_argument
= concat ("@", temp_file
, NULL
);
4362 FILE *f
= fopen (temp_file
, "w");
4366 fatal_error ("could not open temporary response file %s",
4369 status
= writeargv (argv
, f
);
4372 fatal_error ("could not write to temporary response file %s",
4375 status
= fclose (f
);
4378 fatal_error ("could not close temporary response file %s",
4381 store_arg (at_argument
, 0, 0);
4383 record_temp_file (temp_file
, !save_temps_flag
, !save_temps_flag
);
4386 /* True if we should compile INFILE. */
4389 compile_input_file_p (struct infile
*infile
)
4391 if ((!infile
->language
) || (infile
->language
[0] != '*'))
4392 if (infile
->incompiler
== input_file_compiler
)
4397 /* Process each member of VEC as a spec. */
4400 do_specs_vec (VEC(char_p
,heap
) *vec
)
4405 FOR_EACH_VEC_ELT (char_p
, vec
, ix
, opt
)
4407 do_spec_1 (opt
, 1, NULL
);
4408 /* Make each accumulated option a separate argument. */
4409 do_spec_1 (" ", 0, NULL
);
4413 /* Process the sub-spec SPEC as a portion of a larger spec.
4414 This is like processing a whole spec except that we do
4415 not initialize at the beginning and we do not supply a
4416 newline by default at the end.
4417 INSWITCH nonzero means don't process %-sequences in SPEC;
4418 in this case, % is treated as an ordinary character.
4419 This is used while substituting switches.
4420 INSWITCH nonzero also causes SPC not to terminate an argument.
4422 Value is zero unless a line was finished
4423 and the command on that line reported an error. */
4426 do_spec_1 (const char *spec
, int inswitch
, const char *soft_matched_part
)
4428 const char *p
= spec
;
4433 /* If it's an empty string argument to a switch, keep it as is. */
4434 if (inswitch
&& !*p
)
4438 /* If substituting a switch, treat all chars like letters.
4439 Otherwise, NL, SPC, TAB and % are special. */
4440 switch (inswitch
? 'a' : c
)
4445 if (VEC_length (const_char_p
, argbuf
) > 0
4446 && !strcmp (VEC_last (const_char_p
, argbuf
), "|"))
4448 /* A `|' before the newline means use a pipe here,
4449 but only if -pipe was specified.
4450 Otherwise, execute now and don't pass the `|' as an arg. */
4453 input_from_pipe
= 1;
4457 VEC_pop (const_char_p
, argbuf
);
4460 set_collect_gcc_options ();
4462 if (VEC_length (const_char_p
, argbuf
) > 0)
4468 /* Reinitialize for a new command, and for a new argument. */
4471 delete_this_arg
= 0;
4472 this_is_output_file
= 0;
4473 this_is_library_file
= 0;
4474 this_is_linker_script
= 0;
4475 input_from_pipe
= 0;
4482 obstack_1grow (&obstack
, c
);
4490 /* Reinitialize for a new argument. */
4491 delete_this_arg
= 0;
4492 this_is_output_file
= 0;
4493 this_is_library_file
= 0;
4494 this_is_linker_script
= 0;
4501 fatal_error ("spec %qs invalid", spec
);
4504 if (save_temps_length
)
4505 obstack_grow (&obstack
, save_temps_prefix
, save_temps_length
);
4507 obstack_grow (&obstack
, input_basename
, basename_length
);
4508 if (compare_debug
< 0)
4509 obstack_grow (&obstack
, ".gk", 3);
4514 if (save_temps_length
)
4515 obstack_grow (&obstack
, save_temps_prefix
, save_temps_length
);
4517 obstack_grow (&obstack
, input_basename
, suffixed_basename_length
);
4518 if (compare_debug
< 0)
4519 obstack_grow (&obstack
, ".gk", 3);
4524 delete_this_arg
= 2;
4527 /* Dump out the directories specified with LIBRARY_PATH,
4528 followed by the absolute directories
4529 that we search for startfiles. */
4532 struct spec_path_info info
;
4535 info
.append_len
= 0;
4536 #ifdef RELATIVE_PREFIX_NOT_LINKDIR
4537 /* Used on systems which record the specified -L dirs
4538 and use them to search for dynamic linking.
4539 Relative directories always come from -B,
4540 and it is better not to use them for searching
4541 at run time. In particular, stage1 loses. */
4542 info
.omit_relative
= true;
4544 info
.omit_relative
= false;
4546 info
.separate_options
= false;
4548 for_each_path (&startfile_prefixes
, true, 0, spec_path
, &info
);
4553 /* %efoo means report an error with `foo' as error message
4554 and don't execute any more commands for this file. */
4558 while (*p
!= 0 && *p
!= '\n')
4560 buf
= (char *) alloca (p
- q
+ 1);
4561 strncpy (buf
, q
, p
- q
);
4563 error ("%s", _(buf
));
4568 /* %nfoo means report a notice with `foo' on stderr. */
4572 while (*p
!= 0 && *p
!= '\n')
4574 buf
= (char *) alloca (p
- q
+ 1);
4575 strncpy (buf
, q
, p
- q
);
4577 inform (0, "%s", _(buf
));
4587 /* If save_temps_flag is off, and the HOST_BIT_BUCKET is
4588 defined, and it is not a directory, and it is
4589 writable, use it. Otherwise, treat this like any
4590 other temporary file. */
4592 if ((!save_temps_flag
)
4593 && (stat (HOST_BIT_BUCKET
, &st
) == 0) && (!S_ISDIR (st
.st_mode
))
4594 && (access (HOST_BIT_BUCKET
, W_OK
) == 0))
4596 obstack_grow (&obstack
, HOST_BIT_BUCKET
,
4597 strlen (HOST_BIT_BUCKET
));
4598 delete_this_arg
= 0;
4603 goto create_temp_file
;
4607 obstack_1grow (&obstack
, '-');
4608 delete_this_arg
= 0;
4611 /* consume suffix */
4612 while (*p
== '.' || ISALNUM ((unsigned char) *p
))
4614 if (p
[0] == '%' && p
[1] == 'O')
4619 goto create_temp_file
;
4623 /* consume suffix */
4624 while (*p
== '.' || ISALNUM ((unsigned char) *p
))
4626 if (p
[0] == '%' && p
[1] == 'O')
4631 goto create_temp_file
;
4637 struct temp_name
*t
;
4639 const char *suffix
= p
;
4640 char *saved_suffix
= NULL
;
4642 while (*p
== '.' || ISALNUM ((unsigned char) *p
))
4644 suffix_length
= p
- suffix
;
4645 if (p
[0] == '%' && p
[1] == 'O')
4648 /* We don't support extra suffix characters after %O. */
4649 if (*p
== '.' || ISALNUM ((unsigned char) *p
))
4650 fatal_error ("spec %qs has invalid %<%%0%c%>", spec
, *p
);
4651 if (suffix_length
== 0)
4652 suffix
= TARGET_OBJECT_SUFFIX
;
4656 = XNEWVEC (char, suffix_length
4657 + strlen (TARGET_OBJECT_SUFFIX
));
4658 strncpy (saved_suffix
, suffix
, suffix_length
);
4659 strcpy (saved_suffix
+ suffix_length
,
4660 TARGET_OBJECT_SUFFIX
);
4662 suffix_length
+= strlen (TARGET_OBJECT_SUFFIX
);
4665 if (compare_debug
< 0)
4667 suffix
= concat (".gk", suffix
, NULL
);
4671 /* If -save-temps=obj and -o were specified, use that for the
4673 if (save_temps_length
)
4676 temp_filename_length
4677 = save_temps_length
+ suffix_length
+ 1;
4678 tmp
= (char *) alloca (temp_filename_length
);
4679 memcpy (tmp
, save_temps_prefix
, save_temps_length
);
4680 memcpy (tmp
+ save_temps_length
, suffix
, suffix_length
);
4681 tmp
[save_temps_length
+ suffix_length
] = '\0';
4682 temp_filename
= save_string (tmp
,
4683 temp_filename_length
+ 1);
4684 obstack_grow (&obstack
, temp_filename
,
4685 temp_filename_length
);
4687 delete_this_arg
= 0;
4691 /* If the gcc_input_filename has the same suffix specified
4692 for the %g, %u, or %U, and -save-temps is specified,
4693 we could end up using that file as an intermediate
4694 thus clobbering the user's source file (.e.g.,
4695 gcc -save-temps foo.s would clobber foo.s with the
4696 output of cpp0). So check for this condition and
4697 generate a temp file as the intermediate. */
4699 if (save_temps_flag
)
4702 temp_filename_length
= basename_length
+ suffix_length
+ 1;
4703 tmp
= (char *) alloca (temp_filename_length
);
4704 memcpy (tmp
, input_basename
, basename_length
);
4705 memcpy (tmp
+ basename_length
, suffix
, suffix_length
);
4706 tmp
[basename_length
+ suffix_length
] = '\0';
4707 temp_filename
= tmp
;
4709 if (strcmp (temp_filename
, gcc_input_filename
) != 0)
4711 #ifndef HOST_LACKS_INODE_NUMBERS
4712 struct stat st_temp
;
4714 /* Note, set_input() resets input_stat_set to 0. */
4715 if (input_stat_set
== 0)
4717 input_stat_set
= stat (gcc_input_filename
,
4719 if (input_stat_set
>= 0)
4723 /* If we have the stat for the gcc_input_filename
4724 and we can do the stat for the temp_filename
4725 then the they could still refer to the same
4726 file if st_dev/st_ino's are the same. */
4727 if (input_stat_set
!= 1
4728 || stat (temp_filename
, &st_temp
) < 0
4729 || input_stat
.st_dev
!= st_temp
.st_dev
4730 || input_stat
.st_ino
!= st_temp
.st_ino
)
4732 /* Just compare canonical pathnames. */
4733 char* input_realname
= lrealpath (gcc_input_filename
);
4734 char* temp_realname
= lrealpath (temp_filename
);
4735 bool files_differ
= strcmp (input_realname
, temp_realname
);
4736 free (input_realname
);
4737 free (temp_realname
);
4741 temp_filename
= save_string (temp_filename
,
4742 temp_filename_length
+ 1);
4743 obstack_grow (&obstack
, temp_filename
,
4744 temp_filename_length
);
4746 delete_this_arg
= 0;
4752 /* See if we already have an association of %g/%u/%U and
4754 for (t
= temp_names
; t
; t
= t
->next
)
4755 if (t
->length
== suffix_length
4756 && strncmp (t
->suffix
, suffix
, suffix_length
) == 0
4757 && t
->unique
== (c
== 'u' || c
== 'U' || c
== 'j'))
4760 /* Make a new association if needed. %u and %j
4762 if (t
== 0 || c
== 'u' || c
== 'j')
4766 t
= XNEW (struct temp_name
);
4767 t
->next
= temp_names
;
4770 t
->length
= suffix_length
;
4773 t
->suffix
= saved_suffix
;
4774 saved_suffix
= NULL
;
4777 t
->suffix
= save_string (suffix
, suffix_length
);
4778 t
->unique
= (c
== 'u' || c
== 'U' || c
== 'j');
4779 temp_filename
= make_temp_file (t
->suffix
);
4780 temp_filename_length
= strlen (temp_filename
);
4781 t
->filename
= temp_filename
;
4782 t
->filename_length
= temp_filename_length
;
4786 free (saved_suffix
);
4788 obstack_grow (&obstack
, t
->filename
, t
->filename_length
);
4789 delete_this_arg
= 1;
4797 if (at_file_supplied
)
4799 /* We are going to expand `%i' to `@FILE', where FILE
4800 is a newly-created temporary filename. The filenames
4801 that would usually be expanded in place of %o will be
4802 written to the temporary file. */
4807 for (i
= 0; i
< n_infiles
; i
++)
4808 if (compile_input_file_p (&infiles
[i
]))
4811 argv
= (char **) alloca (sizeof (char *) * (n_files
+ 1));
4813 /* Copy the strings over. */
4814 for (i
= 0, j
= 0; i
< n_infiles
; i
++)
4815 if (compile_input_file_p (&infiles
[i
]))
4817 argv
[j
] = CONST_CAST (char *, infiles
[i
].name
);
4818 infiles
[i
].compiled
= true;
4823 create_at_file (argv
);
4826 for (i
= 0; (int) i
< n_infiles
; i
++)
4827 if (compile_input_file_p (&infiles
[i
]))
4829 store_arg (infiles
[i
].name
, 0, 0);
4830 infiles
[i
].compiled
= true;
4835 obstack_grow (&obstack
, gcc_input_filename
,
4836 input_filename_length
);
4843 struct spec_path_info info
;
4847 do_spec_1 ("-imultilib", 1, NULL
);
4848 /* Make this a separate argument. */
4849 do_spec_1 (" ", 0, NULL
);
4850 do_spec_1 (multilib_dir
, 1, NULL
);
4851 do_spec_1 (" ", 0, NULL
);
4854 if (gcc_exec_prefix
)
4856 do_spec_1 ("-iprefix", 1, NULL
);
4857 /* Make this a separate argument. */
4858 do_spec_1 (" ", 0, NULL
);
4859 do_spec_1 (gcc_exec_prefix
, 1, NULL
);
4860 do_spec_1 (" ", 0, NULL
);
4863 if (target_system_root_changed
||
4864 (target_system_root
&& target_sysroot_hdrs_suffix
))
4866 do_spec_1 ("-isysroot", 1, NULL
);
4867 /* Make this a separate argument. */
4868 do_spec_1 (" ", 0, NULL
);
4869 do_spec_1 (target_system_root
, 1, NULL
);
4870 if (target_sysroot_hdrs_suffix
)
4871 do_spec_1 (target_sysroot_hdrs_suffix
, 1, NULL
);
4872 do_spec_1 (" ", 0, NULL
);
4875 info
.option
= "-isystem";
4876 info
.append
= "include";
4877 info
.append_len
= strlen (info
.append
);
4878 info
.omit_relative
= false;
4879 info
.separate_options
= true;
4881 for_each_path (&include_prefixes
, false, info
.append_len
,
4884 info
.append
= "include-fixed";
4885 if (*sysroot_hdrs_suffix_spec
)
4886 info
.append
= concat (info
.append
, dir_separator_str
,
4887 multilib_dir
, NULL
);
4888 info
.append_len
= strlen (info
.append
);
4889 for_each_path (&include_prefixes
, false, info
.append_len
,
4896 int max
= n_infiles
;
4897 max
+= lang_specific_extra_outfiles
;
4899 if (HAVE_GNU_LD
&& at_file_supplied
)
4901 /* We are going to expand `%o' to `@FILE', where FILE
4902 is a newly-created temporary filename. The filenames
4903 that would usually be expanded in place of %o will be
4904 written to the temporary file. */
4909 /* Convert OUTFILES into a form suitable for writeargv. */
4911 /* Determine how many are non-NULL. */
4912 for (n_files
= 0, i
= 0; i
< max
; i
++)
4913 n_files
+= outfiles
[i
] != NULL
;
4915 argv
= (char **) alloca (sizeof (char *) * (n_files
+ 1));
4917 /* Copy the strings over. */
4918 for (i
= 0, j
= 0; i
< max
; i
++)
4921 argv
[j
] = CONST_CAST (char *, outfiles
[i
]);
4926 create_at_file (argv
);
4929 for (i
= 0; i
< max
; i
++)
4931 store_arg (outfiles
[i
], 0, 0);
4936 obstack_grow (&obstack
, TARGET_OBJECT_SUFFIX
, strlen (TARGET_OBJECT_SUFFIX
));
4941 this_is_library_file
= 1;
4945 this_is_linker_script
= 1;
4949 outfiles
[input_file_number
] = NULL
;
4953 this_is_output_file
= 1;
4958 unsigned int cur_index
= VEC_length (const_char_p
, argbuf
);
4959 /* Handle the {...} following the %W. */
4961 fatal_error ("spec %qs has invalid %<%%W%c%>", spec
, *p
);
4962 p
= handle_braces (p
+ 1);
4966 /* If any args were output, mark the last one for deletion
4968 if (VEC_length (const_char_p
, argbuf
) != cur_index
)
4969 record_temp_file (VEC_last (const_char_p
, argbuf
), 0, 1);
4973 /* %x{OPTION} records OPTION for %X to output. */
4981 /* Skip past the option value and make a copy. */
4983 fatal_error ("spec %qs has invalid %<%%x%c%>", spec
, *p
);
4986 string
= save_string (p1
+ 1, p
- p1
- 2);
4988 /* See if we already recorded this option. */
4989 FOR_EACH_VEC_ELT (char_p
, linker_options
, ix
, opt
)
4990 if (! strcmp (string
, opt
))
4996 /* This option is new; add it. */
4997 add_linker_option (string
, strlen (string
));
5001 /* Dump out the options accumulated previously using %x. */
5003 do_specs_vec (linker_options
);
5006 /* Dump out the options accumulated previously using -Wa,. */
5008 do_specs_vec (assembler_options
);
5011 /* Dump out the options accumulated previously using -Wp,. */
5013 do_specs_vec (preprocessor_options
);
5016 /* Here are digits and numbers that just process
5017 a certain constant string as a spec. */
5020 value
= do_spec_1 (cc1_spec
, 0, NULL
);
5026 value
= do_spec_1 (cc1plus_spec
, 0, NULL
);
5032 value
= do_spec_1 (asm_spec
, 0, NULL
);
5038 value
= do_spec_1 (asm_final_spec
, 0, NULL
);
5045 const char *const spec
5046 = (input_file_compiler
->cpp_spec
5047 ? input_file_compiler
->cpp_spec
5049 value
= do_spec_1 (spec
, 0, NULL
);
5056 value
= do_spec_1 (endfile_spec
, 0, NULL
);
5062 value
= do_spec_1 (link_spec
, 0, NULL
);
5068 value
= do_spec_1 (lib_spec
, 0, NULL
);
5074 value
= do_spec_1 (libgcc_spec
, 0, NULL
);
5080 /* We assume there is a directory
5081 separator at the end of this string. */
5082 if (target_system_root
)
5084 obstack_grow (&obstack
, target_system_root
,
5085 strlen (target_system_root
));
5086 if (target_sysroot_suffix
)
5087 obstack_grow (&obstack
, target_sysroot_suffix
,
5088 strlen (target_sysroot_suffix
));
5093 value
= do_spec_1 (startfile_spec
, 0, NULL
);
5098 /* Here we define characters other than letters and digits. */
5101 p
= handle_braces (p
);
5107 p
= handle_spec_function (p
);
5113 obstack_1grow (&obstack
, '%');
5120 while (p
[len
] && p
[len
] != ' ' && p
[len
] != '%')
5122 suffix_subst
= save_string (p
- 1, len
+ 1);
5127 /* Henceforth ignore the option(s) matching the pattern
5133 int have_wildcard
= 0;
5138 switch_option
= SWITCH_IGNORE
| SWITCH_KEEP_FOR_GCC
;
5140 switch_option
= SWITCH_IGNORE
;
5142 while (p
[len
] && p
[len
] != ' ' && p
[len
] != '\t')
5145 if (p
[len
-1] == '*')
5148 for (i
= 0; i
< n_switches
; i
++)
5149 if (!strncmp (switches
[i
].part1
, p
, len
- have_wildcard
)
5150 && (have_wildcard
|| switches
[i
].part1
[len
] == '\0'))
5152 switches
[i
].live_cond
|= switch_option
;
5153 switches
[i
].validated
= 1;
5161 if (soft_matched_part
)
5163 if (soft_matched_part
[0])
5164 do_spec_1 (soft_matched_part
, 1, NULL
);
5165 do_spec_1 (" ", 0, NULL
);
5168 /* Catch the case where a spec string contains something like
5169 '%{foo:%*}'. i.e. there is no * in the pattern on the left
5170 hand side of the :. */
5171 error ("spec failure: %<%%*%> has not been initialized by pattern match");
5174 /* Process a string found as the value of a spec given by name.
5175 This feature allows individual machine descriptions
5176 to add and use their own specs.
5177 %[...] modifies -D options the way %P does;
5178 %(...) uses the spec unmodified. */
5180 warning (0, "use of obsolete %%[ operator in specs");
5183 const char *name
= p
;
5184 struct spec_list
*sl
;
5187 /* The string after the S/P is the name of a spec that is to be
5189 while (*p
&& *p
!= ')' && *p
!= ']')
5192 /* See if it's in the list. */
5193 for (len
= p
- name
, sl
= specs
; sl
; sl
= sl
->next
)
5194 if (sl
->name_len
== len
&& !strncmp (sl
->name
, name
, len
))
5196 name
= *(sl
->ptr_spec
);
5198 fnotice (stderr
, "Processing spec %c%s%c, which is '%s'\n",
5199 c
, sl
->name
, (c
== '(') ? ')' : ']', name
);
5208 value
= do_spec_1 (name
, 0, NULL
);
5214 char *x
= (char *) alloca (strlen (name
) * 2 + 1);
5216 const char *y
= name
;
5219 /* Copy all of NAME into BUF, but put __ after
5220 every -D and at the end of each arg. */
5223 if (! strncmp (y
, "-D", 2))
5234 && (*y
== ' ' || *y
== '\t' || *y
== '='
5235 || *y
== '}' || *y
== 0))
5248 value
= do_spec_1 (buf
, 0, NULL
);
5254 /* Discard the closing paren or bracket. */
5261 error ("spec failure: unrecognized spec option %qc", c
);
5267 /* Backslash: treat next character as ordinary. */
5272 /* Ordinary character: put it into the current argument. */
5273 obstack_1grow (&obstack
, c
);
5277 /* End of string. If we are processing a spec function, we need to
5278 end any pending argument. */
5279 if (processing_spec_function
)
5285 /* Look up a spec function. */
5287 static const struct spec_function
*
5288 lookup_spec_function (const char *name
)
5290 const struct spec_function
*sf
;
5292 for (sf
= static_spec_functions
; sf
->name
!= NULL
; sf
++)
5293 if (strcmp (sf
->name
, name
) == 0)
5299 /* Evaluate a spec function. */
5302 eval_spec_function (const char *func
, const char *args
)
5304 const struct spec_function
*sf
;
5305 const char *funcval
;
5307 /* Saved spec processing context. */
5308 VEC(const_char_p
,heap
) *save_argbuf
;
5311 int save_delete_this_arg
;
5312 int save_this_is_output_file
;
5313 int save_this_is_library_file
;
5314 int save_input_from_pipe
;
5315 int save_this_is_linker_script
;
5316 const char *save_suffix_subst
;
5319 sf
= lookup_spec_function (func
);
5321 fatal_error ("unknown spec function %qs", func
);
5323 /* Push the spec processing context. */
5324 save_argbuf
= argbuf
;
5326 save_arg_going
= arg_going
;
5327 save_delete_this_arg
= delete_this_arg
;
5328 save_this_is_output_file
= this_is_output_file
;
5329 save_this_is_library_file
= this_is_library_file
;
5330 save_this_is_linker_script
= this_is_linker_script
;
5331 save_input_from_pipe
= input_from_pipe
;
5332 save_suffix_subst
= suffix_subst
;
5334 /* Create a new spec processing context, and build the function
5338 if (do_spec_2 (args
) < 0)
5339 fatal_error ("error in args to spec function %qs", func
);
5341 /* argbuf_index is an index for the next argument to be inserted, and
5342 so contains the count of the args already inserted. */
5344 funcval
= (*sf
->func
) (VEC_length (const_char_p
, argbuf
),
5345 VEC_address (const_char_p
, argbuf
));
5347 /* Pop the spec processing context. */
5348 VEC_free (const_char_p
, heap
, argbuf
);
5349 argbuf
= save_argbuf
;
5351 arg_going
= save_arg_going
;
5352 delete_this_arg
= save_delete_this_arg
;
5353 this_is_output_file
= save_this_is_output_file
;
5354 this_is_library_file
= save_this_is_library_file
;
5355 this_is_linker_script
= save_this_is_linker_script
;
5356 input_from_pipe
= save_input_from_pipe
;
5357 suffix_subst
= save_suffix_subst
;
5362 /* Handle a spec function call of the form:
5366 ARGS is processed as a spec in a separate context and split into an
5367 argument vector in the normal fashion. The function returns a string
5368 containing a spec which we then process in the caller's context, or
5369 NULL if no processing is required. */
5372 handle_spec_function (const char *p
)
5375 const char *endp
, *funcval
;
5378 processing_spec_function
++;
5380 /* Get the function name. */
5381 for (endp
= p
; *endp
!= '\0'; endp
++)
5383 if (*endp
== '(') /* ) */
5385 /* Only allow [A-Za-z0-9], -, and _ in function names. */
5386 if (!ISALNUM (*endp
) && !(*endp
== '-' || *endp
== '_'))
5387 fatal_error ("malformed spec function name");
5389 if (*endp
!= '(') /* ) */
5390 fatal_error ("no arguments for spec function");
5391 func
= save_string (p
, endp
- p
);
5394 /* Get the arguments. */
5395 for (count
= 0; *endp
!= '\0'; endp
++)
5404 else if (*endp
== '(') /* ) */
5409 fatal_error ("malformed spec function arguments");
5410 args
= save_string (p
, endp
- p
);
5413 /* p now points to just past the end of the spec function expression. */
5415 funcval
= eval_spec_function (func
, args
);
5416 if (funcval
!= NULL
&& do_spec_1 (funcval
, 0, NULL
) < 0)
5422 processing_spec_function
--;
5427 /* Inline subroutine of handle_braces. Returns true if the current
5428 input suffix matches the atom bracketed by ATOM and END_ATOM. */
5430 input_suffix_matches (const char *atom
, const char *end_atom
)
5432 return (input_suffix
5433 && !strncmp (input_suffix
, atom
, end_atom
- atom
)
5434 && input_suffix
[end_atom
- atom
] == '\0');
5437 /* Subroutine of handle_braces. Returns true if the current
5438 input file's spec name matches the atom bracketed by ATOM and END_ATOM. */
5440 input_spec_matches (const char *atom
, const char *end_atom
)
5442 return (input_file_compiler
5443 && input_file_compiler
->suffix
5444 && input_file_compiler
->suffix
[0] != '\0'
5445 && !strncmp (input_file_compiler
->suffix
+ 1, atom
,
5447 && input_file_compiler
->suffix
[end_atom
- atom
+ 1] == '\0');
5450 /* Subroutine of handle_braces. Returns true if a switch
5451 matching the atom bracketed by ATOM and END_ATOM appeared on the
5454 switch_matches (const char *atom
, const char *end_atom
, int starred
)
5457 int len
= end_atom
- atom
;
5458 int plen
= starred
? len
: -1;
5460 for (i
= 0; i
< n_switches
; i
++)
5461 if (!strncmp (switches
[i
].part1
, atom
, len
)
5462 && (starred
|| switches
[i
].part1
[len
] == '\0')
5463 && check_live_switch (i
, plen
))
5469 /* Inline subroutine of handle_braces. Mark all of the switches which
5470 match ATOM (extends to END_ATOM; STARRED indicates whether there
5471 was a star after the atom) for later processing. */
5473 mark_matching_switches (const char *atom
, const char *end_atom
, int starred
)
5476 int len
= end_atom
- atom
;
5477 int plen
= starred
? len
: -1;
5479 for (i
= 0; i
< n_switches
; i
++)
5480 if (!strncmp (switches
[i
].part1
, atom
, len
)
5481 && (starred
|| switches
[i
].part1
[len
] == '\0')
5482 && check_live_switch (i
, plen
))
5483 switches
[i
].ordering
= 1;
5486 /* Inline subroutine of handle_braces. Process all the currently
5487 marked switches through give_switch, and clear the marks. */
5489 process_marked_switches (void)
5493 for (i
= 0; i
< n_switches
; i
++)
5494 if (switches
[i
].ordering
== 1)
5496 switches
[i
].ordering
= 0;
5501 /* Handle a %{ ... } construct. P points just inside the leading {.
5502 Returns a pointer one past the end of the brace block, or 0
5503 if we call do_spec_1 and that returns -1. */
5506 handle_braces (const char *p
)
5508 const char *atom
, *end_atom
;
5509 const char *d_atom
= NULL
, *d_end_atom
= NULL
;
5510 const char *orig
= p
;
5518 bool a_must_be_last
= false;
5519 bool ordered_set
= false;
5520 bool disjunct_set
= false;
5521 bool disj_matched
= false;
5522 bool disj_starred
= true;
5523 bool n_way_choice
= false;
5524 bool n_way_matched
= false;
5526 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
5533 /* Scan one "atom" (S in the description above of %{}, possibly
5534 with '!', '.', '@', ',', or '*' modifiers). */
5536 a_is_suffix
= false;
5537 a_is_starred
= false;
5538 a_is_negated
= false;
5539 a_is_spectype
= false;
5543 p
++, a_is_negated
= true;
5547 p
++, a_is_suffix
= true;
5549 p
++, a_is_spectype
= true;
5552 while (ISIDNUM(*p
) || *p
== '-' || *p
== '+' || *p
== '='
5553 || *p
== ',' || *p
== '.' || *p
== '@')
5558 p
++, a_is_starred
= 1;
5564 /* Substitute the switch(es) indicated by the current atom. */
5566 if (disjunct_set
|| n_way_choice
|| a_is_negated
|| a_is_suffix
5567 || a_is_spectype
|| atom
== end_atom
)
5570 mark_matching_switches (atom
, end_atom
, a_is_starred
);
5573 process_marked_switches ();
5577 /* Substitute some text if the current atom appears as a switch
5579 disjunct_set
= true;
5583 if (atom
== end_atom
)
5585 if (!n_way_choice
|| disj_matched
|| *p
== '|'
5586 || a_is_negated
|| a_is_suffix
|| a_is_spectype
5590 /* An empty term may appear as the last choice of an
5591 N-way choice set; it means "otherwise". */
5592 a_must_be_last
= true;
5593 disj_matched
= !n_way_matched
;
5594 disj_starred
= false;
5598 if ((a_is_suffix
|| a_is_spectype
) && a_is_starred
)
5602 disj_starred
= false;
5604 /* Don't bother testing this atom if we already have a
5606 if (!disj_matched
&& !n_way_matched
)
5609 a_matched
= input_suffix_matches (atom
, end_atom
);
5610 else if (a_is_spectype
)
5611 a_matched
= input_spec_matches (atom
, end_atom
);
5613 a_matched
= switch_matches (atom
, end_atom
, a_is_starred
);
5615 if (a_matched
!= a_is_negated
)
5617 disj_matched
= true;
5619 d_end_atom
= end_atom
;
5626 /* Found the body, that is, the text to substitute if the
5627 current disjunction matches. */
5628 p
= process_brace_body (p
+ 1, d_atom
, d_end_atom
, disj_starred
,
5629 disj_matched
&& !n_way_matched
);
5633 /* If we have an N-way choice, reset state for the next
5637 n_way_choice
= true;
5638 n_way_matched
|= disj_matched
;
5639 disj_matched
= false;
5640 disj_starred
= true;
5641 d_atom
= d_end_atom
= NULL
;
5650 while (*p
++ != '}');
5655 fatal_error ("braced spec %qs is invalid at %qc", orig
, *p
);
5660 /* Subroutine of handle_braces. Scan and process a brace substitution body
5661 (X in the description of %{} syntax). P points one past the colon;
5662 ATOM and END_ATOM bracket the first atom which was found to be true
5663 (present) in the current disjunction; STARRED indicates whether all
5664 the atoms in the current disjunction were starred (for syntax validation);
5665 MATCHED indicates whether the disjunction matched or not, and therefore
5666 whether or not the body is to be processed through do_spec_1 or just
5667 skipped. Returns a pointer to the closing } or ;, or 0 if do_spec_1
5671 process_brace_body (const char *p
, const char *atom
, const char *end_atom
,
5672 int starred
, int matched
)
5674 const char *body
, *end_body
;
5675 unsigned int nesting_level
;
5676 bool have_subst
= false;
5678 /* Locate the closing } or ;, honoring nested braces.
5679 Trim trailing whitespace. */
5688 if (!--nesting_level
)
5691 else if (*p
== ';' && nesting_level
== 1)
5693 else if (*p
== '%' && p
[1] == '*' && nesting_level
== 1)
5695 else if (*p
== '\0')
5701 while (end_body
[-1] == ' ' || end_body
[-1] == '\t')
5704 if (have_subst
&& !starred
)
5709 /* Copy the substitution body to permanent storage and execute it.
5710 If have_subst is false, this is a simple matter of running the
5711 body through do_spec_1... */
5712 char *string
= save_string (body
, end_body
- body
);
5715 if (do_spec_1 (string
, 0, NULL
) < 0)
5720 /* ... but if have_subst is true, we have to process the
5721 body once for each matching switch, with %* set to the
5722 variant part of the switch. */
5723 unsigned int hard_match_len
= end_atom
- atom
;
5726 for (i
= 0; i
< n_switches
; i
++)
5727 if (!strncmp (switches
[i
].part1
, atom
, hard_match_len
)
5728 && check_live_switch (i
, hard_match_len
))
5730 if (do_spec_1 (string
, 0,
5731 &switches
[i
].part1
[hard_match_len
]) < 0)
5733 /* Pass any arguments this switch has. */
5735 suffix_subst
= NULL
;
5743 fatal_error ("braced spec body %qs is invalid", body
);
5746 /* Return 0 iff switch number SWITCHNUM is obsoleted by a later switch
5747 on the command line. PREFIX_LENGTH is the length of XXX in an {XXX*}
5748 spec, or -1 if either exact match or %* is used.
5750 A -O switch is obsoleted by a later -O switch. A -f, -m, or -W switch
5751 whose value does not begin with "no-" is obsoleted by the same value
5752 with the "no-", similarly for a switch with the "no-" prefix. */
5755 check_live_switch (int switchnum
, int prefix_length
)
5757 const char *name
= switches
[switchnum
].part1
;
5760 /* If we already processed this switch and determined if it was
5761 live or not, return our past determination. */
5762 if (switches
[switchnum
].live_cond
!= 0)
5763 return ((switches
[switchnum
].live_cond
& SWITCH_LIVE
) != 0
5764 && (switches
[switchnum
].live_cond
& SWITCH_FALSE
) == 0
5765 && (switches
[switchnum
].live_cond
& SWITCH_IGNORE_PERMANENTLY
)
5768 /* In the common case of {<at-most-one-letter>*}, a negating
5769 switch would always match, so ignore that case. We will just
5770 send the conflicting switches to the compiler phase. */
5771 if (prefix_length
>= 0 && prefix_length
<= 1)
5774 /* Now search for duplicate in a manner that depends on the name. */
5778 for (i
= switchnum
+ 1; i
< n_switches
; i
++)
5779 if (switches
[i
].part1
[0] == 'O')
5781 switches
[switchnum
].validated
= 1;
5782 switches
[switchnum
].live_cond
= SWITCH_FALSE
;
5787 case 'W': case 'f': case 'm':
5788 if (! strncmp (name
+ 1, "no-", 3))
5790 /* We have Xno-YYY, search for XYYY. */
5791 for (i
= switchnum
+ 1; i
< n_switches
; i
++)
5792 if (switches
[i
].part1
[0] == name
[0]
5793 && ! strcmp (&switches
[i
].part1
[1], &name
[4]))
5795 switches
[switchnum
].validated
= 1;
5796 switches
[switchnum
].live_cond
= SWITCH_FALSE
;
5802 /* We have XYYY, search for Xno-YYY. */
5803 for (i
= switchnum
+ 1; i
< n_switches
; i
++)
5804 if (switches
[i
].part1
[0] == name
[0]
5805 && switches
[i
].part1
[1] == 'n'
5806 && switches
[i
].part1
[2] == 'o'
5807 && switches
[i
].part1
[3] == '-'
5808 && !strcmp (&switches
[i
].part1
[4], &name
[1]))
5810 switches
[switchnum
].validated
= 1;
5811 switches
[switchnum
].live_cond
= SWITCH_FALSE
;
5818 /* Otherwise the switch is live. */
5819 switches
[switchnum
].live_cond
|= SWITCH_LIVE
;
5823 /* Pass a switch to the current accumulating command
5824 in the same form that we received it.
5825 SWITCHNUM identifies the switch; it is an index into
5826 the vector of switches gcc received, which is `switches'.
5827 This cannot fail since it never finishes a command line.
5829 If OMIT_FIRST_WORD is nonzero, then we omit .part1 of the argument. */
5832 give_switch (int switchnum
, int omit_first_word
)
5834 if ((switches
[switchnum
].live_cond
& SWITCH_IGNORE
) != 0)
5837 if (!omit_first_word
)
5839 do_spec_1 ("-", 0, NULL
);
5840 do_spec_1 (switches
[switchnum
].part1
, 1, NULL
);
5843 if (switches
[switchnum
].args
!= 0)
5846 for (p
= switches
[switchnum
].args
; *p
; p
++)
5848 const char *arg
= *p
;
5850 do_spec_1 (" ", 0, NULL
);
5853 unsigned length
= strlen (arg
);
5856 while (length
-- && !IS_DIR_SEPARATOR (arg
[length
]))
5857 if (arg
[length
] == '.')
5859 (CONST_CAST(char *, arg
))[length
] = 0;
5863 do_spec_1 (arg
, 1, NULL
);
5865 (CONST_CAST(char *, arg
))[length
] = '.';
5866 do_spec_1 (suffix_subst
, 1, NULL
);
5869 do_spec_1 (arg
, 1, NULL
);
5873 do_spec_1 (" ", 0, NULL
);
5874 switches
[switchnum
].validated
= 1;
5877 /* Search for a file named NAME trying various prefixes including the
5878 user's -B prefix and some standard ones.
5879 Return the absolute file name found. If nothing is found, return NAME. */
5882 find_file (const char *name
)
5884 char *newname
= find_a_file (&startfile_prefixes
, name
, R_OK
, true);
5885 return newname
? newname
: name
;
5888 /* Determine whether a directory exists. If LINKER, return 0 for
5889 certain fixed names not needed by the linker. */
5892 is_directory (const char *path1
, bool linker
)
5899 /* Ensure the string ends with "/.". The resulting path will be a
5900 directory even if the given path is a symbolic link. */
5901 len1
= strlen (path1
);
5902 path
= (char *) alloca (3 + len1
);
5903 memcpy (path
, path1
, len1
);
5905 if (!IS_DIR_SEPARATOR (cp
[-1]))
5906 *cp
++ = DIR_SEPARATOR
;
5910 /* Exclude directories that the linker is known to search. */
5912 && IS_DIR_SEPARATOR (path
[0])
5914 && strncmp (path
+ 1, "lib", 3) == 0)
5916 && strncmp (path
+ 1, "usr", 3) == 0
5917 && IS_DIR_SEPARATOR (path
[4])
5918 && strncmp (path
+ 5, "lib", 3) == 0)))
5921 return (stat (path
, &st
) >= 0 && S_ISDIR (st
.st_mode
));
5924 /* Set up the various global variables to indicate that we're processing
5925 the input file named FILENAME. */
5928 set_input (const char *filename
)
5932 gcc_input_filename
= filename
;
5933 input_filename_length
= strlen (gcc_input_filename
);
5934 input_basename
= lbasename (gcc_input_filename
);
5936 /* Find a suffix starting with the last period,
5937 and set basename_length to exclude that suffix. */
5938 basename_length
= strlen (input_basename
);
5939 suffixed_basename_length
= basename_length
;
5940 p
= input_basename
+ basename_length
;
5941 while (p
!= input_basename
&& *p
!= '.')
5943 if (*p
== '.' && p
!= input_basename
)
5945 basename_length
= p
- input_basename
;
5946 input_suffix
= p
+ 1;
5951 /* If a spec for 'g', 'u', or 'U' is seen with -save-temps then
5952 we will need to do a stat on the gcc_input_filename. The
5953 INPUT_STAT_SET signals that the stat is needed. */
5957 /* On fatal signals, delete all the temporary files. */
5960 fatal_signal (int signum
)
5962 signal (signum
, SIG_DFL
);
5963 delete_failure_queue ();
5964 delete_temp_files ();
5965 /* Get the same signal again, this time not handled,
5966 so its normal effect occurs. */
5967 kill (getpid (), signum
);
5970 /* Compare the contents of the two files named CMPFILE[0] and
5971 CMPFILE[1]. Return zero if they're identical, nonzero
5975 compare_files (char *cmpfile
[])
5978 FILE *temp
[2] = { NULL
, NULL
};
5984 void *map
[2] = { NULL
, NULL
};
5986 for (i
= 0; i
< 2; i
++)
5990 if (stat (cmpfile
[i
], &st
) < 0 || !S_ISREG (st
.st_mode
))
5992 error ("%s: could not determine length of compare-debug file %s",
5993 gcc_input_filename
, cmpfile
[i
]);
5998 length
[i
] = st
.st_size
;
6001 if (!ret
&& length
[0] != length
[1])
6003 error ("%s: -fcompare-debug failure (length)", gcc_input_filename
);
6008 for (i
= 0; i
< 2; i
++)
6010 int fd
= open (cmpfile
[i
], O_RDONLY
);
6013 error ("%s: could not open compare-debug file %s",
6014 gcc_input_filename
, cmpfile
[i
]);
6019 map
[i
] = mmap (NULL
, length
[i
], PROT_READ
, MAP_PRIVATE
, fd
, 0);
6022 if (map
[i
] == (void *) MAP_FAILED
)
6031 if (memcmp (map
[0], map
[1], length
[0]) != 0)
6033 error ("%s: -fcompare-debug failure", gcc_input_filename
);
6038 for (i
= 0; i
< 2; i
++)
6040 munmap ((caddr_t
) map
[i
], length
[i
]);
6049 for (i
= 0; i
< 2; i
++)
6051 temp
[i
] = fopen (cmpfile
[i
], "r");
6054 error ("%s: could not open compare-debug file %s",
6055 gcc_input_filename
, cmpfile
[i
]);
6061 if (!ret
&& temp
[0] && temp
[1])
6065 c0
= fgetc (temp
[0]);
6066 c1
= fgetc (temp
[1]);
6070 error ("%s: -fcompare-debug failure",
6071 gcc_input_filename
);
6080 for (i
= 1; i
>= 0; i
--)
6089 extern int main (int, char **);
6092 main (int argc
, char **argv
)
6096 int linker_was_run
= 0;
6097 int lang_n_infiles
= 0;
6098 int num_linker_inputs
= 0;
6099 char *explicit_link_files
;
6101 char *lto_wrapper_file
;
6103 struct user_specs
*uptr
;
6104 char **old_argv
= argv
;
6105 struct cl_decoded_option
*decoded_options
;
6106 unsigned int decoded_options_count
;
6108 /* Initialize here, not in definition. The IRIX 6 O32 cc sometimes chokes
6109 on ?: in file-scope variable initializations. */
6110 asm_debug
= ASM_DEBUG_SPEC
;
6112 p
= argv
[0] + strlen (argv
[0]);
6113 while (p
!= argv
[0] && !IS_DIR_SEPARATOR (p
[-1]))
6117 xmalloc_set_program_name (progname
);
6119 expandargv (&argc
, &argv
);
6121 /* Determine if any expansions were made. */
6122 if (argv
!= old_argv
)
6123 at_file_supplied
= true;
6125 global_options
= global_options_init
;
6127 decode_cmdline_options_to_array (argc
, CONST_CAST2 (const char **, char **,
6130 &decoded_options
, &decoded_options_count
);
6132 #ifdef GCC_DRIVER_HOST_INITIALIZATION
6133 /* Perform host dependent initialization when needed. */
6134 GCC_DRIVER_HOST_INITIALIZATION
;
6137 /* Unlock the stdio streams. */
6138 unlock_std_streams ();
6140 gcc_init_libintl ();
6142 diagnostic_initialize (global_dc
, 0);
6143 if (atexit (delete_temp_files
) != 0)
6144 fatal_error ("atexit failed");
6146 if (signal (SIGINT
, SIG_IGN
) != SIG_IGN
)
6147 signal (SIGINT
, fatal_signal
);
6149 if (signal (SIGHUP
, SIG_IGN
) != SIG_IGN
)
6150 signal (SIGHUP
, fatal_signal
);
6152 if (signal (SIGTERM
, SIG_IGN
) != SIG_IGN
)
6153 signal (SIGTERM
, fatal_signal
);
6155 if (signal (SIGPIPE
, SIG_IGN
) != SIG_IGN
)
6156 signal (SIGPIPE
, fatal_signal
);
6159 /* We *MUST* set SIGCHLD to SIG_DFL so that the wait4() call will
6160 receive the signal. A different setting is inheritable */
6161 signal (SIGCHLD
, SIG_DFL
);
6164 /* Allocate the argument vector. */
6167 obstack_init (&obstack
);
6169 /* Build multilib_select, et. al from the separate lines that make up each
6170 multilib selection. */
6172 const char *const *q
= multilib_raw
;
6175 obstack_init (&multilib_obstack
);
6176 while ((p
= *q
++) != (char *) 0)
6177 obstack_grow (&multilib_obstack
, p
, strlen (p
));
6179 obstack_1grow (&multilib_obstack
, 0);
6180 multilib_select
= XOBFINISH (&multilib_obstack
, const char *);
6182 q
= multilib_matches_raw
;
6183 while ((p
= *q
++) != (char *) 0)
6184 obstack_grow (&multilib_obstack
, p
, strlen (p
));
6186 obstack_1grow (&multilib_obstack
, 0);
6187 multilib_matches
= XOBFINISH (&multilib_obstack
, const char *);
6189 q
= multilib_exclusions_raw
;
6190 while ((p
= *q
++) != (char *) 0)
6191 obstack_grow (&multilib_obstack
, p
, strlen (p
));
6193 obstack_1grow (&multilib_obstack
, 0);
6194 multilib_exclusions
= XOBFINISH (&multilib_obstack
, const char *);
6197 for (i
= 0; i
< ARRAY_SIZE (multilib_defaults_raw
); i
++)
6200 obstack_1grow (&multilib_obstack
, ' ');
6201 obstack_grow (&multilib_obstack
,
6202 multilib_defaults_raw
[i
],
6203 strlen (multilib_defaults_raw
[i
]));
6207 obstack_1grow (&multilib_obstack
, 0);
6208 multilib_defaults
= XOBFINISH (&multilib_obstack
, const char *);
6211 #ifdef INIT_ENVIRONMENT
6212 /* Set up any other necessary machine specific environment variables. */
6213 xputenv (INIT_ENVIRONMENT
);
6216 /* Make a table of what switches there are (switches, n_switches).
6217 Make a table of specified input files (infiles, n_infiles).
6218 Decode switches that are handled locally. */
6220 process_command (decoded_options_count
, decoded_options
);
6222 /* Initialize the vector of specs to just the default.
6223 This means one element containing 0s, as a terminator. */
6225 compilers
= XNEWVAR (struct compiler
, sizeof default_compilers
);
6226 memcpy (compilers
, default_compilers
, sizeof default_compilers
);
6227 n_compilers
= n_default_compilers
;
6229 /* Read specs from a file if there is one. */
6231 machine_suffix
= concat (spec_machine
, dir_separator_str
,
6232 spec_version
, dir_separator_str
, NULL
);
6233 just_machine_suffix
= concat (spec_machine
, dir_separator_str
, NULL
);
6235 specs_file
= find_a_file (&startfile_prefixes
, "specs", R_OK
, true);
6236 /* Read the specs file unless it is a default one. */
6237 if (specs_file
!= 0 && strcmp (specs_file
, "specs"))
6238 read_specs (specs_file
, TRUE
);
6242 /* We need to check standard_exec_prefix/just_machine_suffix/specs
6243 for any override of as, ld and libraries. */
6244 specs_file
= (char *) alloca (strlen (standard_exec_prefix
)
6245 + strlen (just_machine_suffix
) + sizeof ("specs"));
6247 strcpy (specs_file
, standard_exec_prefix
);
6248 strcat (specs_file
, just_machine_suffix
);
6249 strcat (specs_file
, "specs");
6250 if (access (specs_file
, R_OK
) == 0)
6251 read_specs (specs_file
, TRUE
);
6253 /* Process any configure-time defaults specified for the command line
6254 options, via OPTION_DEFAULT_SPECS. */
6255 for (i
= 0; i
< ARRAY_SIZE (option_default_specs
); i
++)
6256 do_option_spec (option_default_specs
[i
].name
,
6257 option_default_specs
[i
].spec
);
6259 /* Process DRIVER_SELF_SPECS, adding any new options to the end
6260 of the command line. */
6262 for (i
= 0; i
< ARRAY_SIZE (driver_self_specs
); i
++)
6263 do_self_spec (driver_self_specs
[i
]);
6267 enum save_temps save
;
6269 if (!compare_debug_second
)
6271 n_switches_debug_check
[1] = n_switches
;
6272 n_switches_alloc_debug_check
[1] = n_switches_alloc
;
6273 switches_debug_check
[1] = XDUPVEC (struct switchstr
, switches
,
6276 do_self_spec ("%:compare-debug-self-opt()");
6277 n_switches_debug_check
[0] = n_switches
;
6278 n_switches_alloc_debug_check
[0] = n_switches_alloc
;
6279 switches_debug_check
[0] = switches
;
6281 n_switches
= n_switches_debug_check
[1];
6282 n_switches_alloc
= n_switches_alloc_debug_check
[1];
6283 switches
= switches_debug_check
[1];
6286 /* Avoid crash when computing %j in this early. */
6287 save
= save_temps_flag
;
6288 save_temps_flag
= SAVE_TEMPS_NONE
;
6290 compare_debug
= -compare_debug
;
6291 do_self_spec ("%:compare-debug-self-opt()");
6293 save_temps_flag
= save
;
6295 if (!compare_debug_second
)
6297 n_switches_debug_check
[1] = n_switches
;
6298 n_switches_alloc_debug_check
[1] = n_switches_alloc
;
6299 switches_debug_check
[1] = switches
;
6300 compare_debug
= -compare_debug
;
6301 n_switches
= n_switches_debug_check
[0];
6302 n_switches_alloc
= n_switches_debug_check
[0];
6303 switches
= switches_debug_check
[0];
6307 /* If not cross-compiling, look for executables in the standard
6309 if (*cross_compile
== '0')
6311 if (*md_exec_prefix
)
6313 add_prefix (&exec_prefixes
, md_exec_prefix
, "GCC",
6314 PREFIX_PRIORITY_LAST
, 0, 0);
6318 /* Process sysroot_suffix_spec. */
6319 if (*sysroot_suffix_spec
!= 0
6320 && do_spec_2 (sysroot_suffix_spec
) == 0)
6322 if (VEC_length (const_char_p
, argbuf
) > 1)
6323 error ("spec failure: more than one arg to SYSROOT_SUFFIX_SPEC");
6324 else if (VEC_length (const_char_p
, argbuf
) == 1)
6325 target_sysroot_suffix
= xstrdup (VEC_last (const_char_p
, argbuf
));
6328 #ifdef HAVE_LD_SYSROOT
6329 /* Pass the --sysroot option to the linker, if it supports that. If
6330 there is a sysroot_suffix_spec, it has already been processed by
6331 this point, so target_system_root really is the system root we
6333 if (target_system_root
)
6335 obstack_grow (&obstack
, "%(sysroot_spec) ", strlen ("%(sysroot_spec) "));
6336 obstack_grow0 (&obstack
, link_spec
, strlen (link_spec
));
6337 set_spec ("link", XOBFINISH (&obstack
, const char *));
6341 /* Process sysroot_hdrs_suffix_spec. */
6342 if (*sysroot_hdrs_suffix_spec
!= 0
6343 && do_spec_2 (sysroot_hdrs_suffix_spec
) == 0)
6345 if (VEC_length (const_char_p
, argbuf
) > 1)
6346 error ("spec failure: more than one arg to SYSROOT_HEADERS_SUFFIX_SPEC");
6347 else if (VEC_length (const_char_p
, argbuf
) == 1)
6348 target_sysroot_hdrs_suffix
= xstrdup (VEC_last (const_char_p
, argbuf
));
6351 /* Look for startfiles in the standard places. */
6352 if (*startfile_prefix_spec
!= 0
6353 && do_spec_2 (startfile_prefix_spec
) == 0
6354 && do_spec_1 (" ", 0, NULL
) == 0)
6358 FOR_EACH_VEC_ELT (const_char_p
, argbuf
, ndx
, arg
)
6359 add_sysrooted_prefix (&startfile_prefixes
, arg
, "BINUTILS",
6360 PREFIX_PRIORITY_LAST
, 0, 1);
6362 /* We should eventually get rid of all these and stick to
6363 startfile_prefix_spec exclusively. */
6364 else if (*cross_compile
== '0' || target_system_root
)
6366 if (*md_startfile_prefix
)
6367 add_sysrooted_prefix (&startfile_prefixes
, md_startfile_prefix
,
6368 "GCC", PREFIX_PRIORITY_LAST
, 0, 1);
6370 if (*md_startfile_prefix_1
)
6371 add_sysrooted_prefix (&startfile_prefixes
, md_startfile_prefix_1
,
6372 "GCC", PREFIX_PRIORITY_LAST
, 0, 1);
6374 /* If standard_startfile_prefix is relative, base it on
6375 standard_exec_prefix. This lets us move the installed tree
6376 as a unit. If GCC_EXEC_PREFIX is defined, base
6377 standard_startfile_prefix on that as well.
6379 If the prefix is relative, only search it for native compilers;
6380 otherwise we will search a directory containing host libraries. */
6381 if (IS_ABSOLUTE_PATH (standard_startfile_prefix
))
6382 add_sysrooted_prefix (&startfile_prefixes
,
6383 standard_startfile_prefix
, "BINUTILS",
6384 PREFIX_PRIORITY_LAST
, 0, 1);
6385 else if (*cross_compile
== '0')
6387 add_prefix (&startfile_prefixes
,
6388 concat (gcc_exec_prefix
6389 ? gcc_exec_prefix
: standard_exec_prefix
,
6391 standard_startfile_prefix
, NULL
),
6392 NULL
, PREFIX_PRIORITY_LAST
, 0, 1);
6395 /* Sysrooted prefixes are relocated because target_system_root is
6396 also relocated by gcc_exec_prefix. */
6397 if (*standard_startfile_prefix_1
)
6398 add_sysrooted_prefix (&startfile_prefixes
,
6399 standard_startfile_prefix_1
, "BINUTILS",
6400 PREFIX_PRIORITY_LAST
, 0, 1);
6401 if (*standard_startfile_prefix_2
)
6402 add_sysrooted_prefix (&startfile_prefixes
,
6403 standard_startfile_prefix_2
, "BINUTILS",
6404 PREFIX_PRIORITY_LAST
, 0, 1);
6407 /* Process any user specified specs in the order given on the command
6409 for (uptr
= user_specs_head
; uptr
; uptr
= uptr
->next
)
6411 char *filename
= find_a_file (&startfile_prefixes
, uptr
->filename
,
6413 read_specs (filename
? filename
: uptr
->filename
, FALSE
);
6416 /* If we have a GCC_EXEC_PREFIX envvar, modify it for cpp's sake. */
6417 if (gcc_exec_prefix
)
6418 gcc_exec_prefix
= concat (gcc_exec_prefix
, spec_machine
, dir_separator_str
,
6419 spec_version
, dir_separator_str
, NULL
);
6421 /* Now we have the specs.
6422 Set the `valid' bits for switches that match anything in any spec. */
6424 validate_all_switches ();
6426 /* Now that we have the switches and the specs, set
6427 the subdirectory based on the options. */
6428 set_multilib_dir ();
6430 /* Set up to remember the pathname of gcc and any options
6431 needed for collect. We use argv[0] instead of progname because
6432 we need the complete pathname. */
6433 obstack_init (&collect_obstack
);
6434 obstack_grow (&collect_obstack
, "COLLECT_GCC=", sizeof ("COLLECT_GCC=") - 1);
6435 obstack_grow (&collect_obstack
, argv
[0], strlen (argv
[0]) + 1);
6436 xputenv (XOBFINISH (&collect_obstack
, char *));
6438 /* Set up to remember the pathname of the lto wrapper. */
6440 lto_wrapper_file
= find_a_file (&exec_prefixes
, "lto-wrapper", X_OK
, false);
6441 if (lto_wrapper_file
)
6443 lto_wrapper_spec
= lto_wrapper_file
;
6444 obstack_init (&collect_obstack
);
6445 obstack_grow (&collect_obstack
, "COLLECT_LTO_WRAPPER=",
6446 sizeof ("COLLECT_LTO_WRAPPER=") - 1);
6447 obstack_grow (&collect_obstack
, lto_wrapper_spec
,
6448 strlen (lto_wrapper_spec
) + 1);
6449 xputenv (XOBFINISH (&collect_obstack
, char *));
6452 /* Warn about any switches that no pass was interested in. */
6454 for (i
= 0; (int) i
< n_switches
; i
++)
6455 if (! switches
[i
].validated
)
6456 error ("unrecognized option %<-%s%>", switches
[i
].part1
);
6458 /* Obey some of the options. */
6460 if (print_search_dirs
)
6462 printf (_("install: %s%s\n"),
6463 gcc_exec_prefix
? gcc_exec_prefix
: standard_exec_prefix
,
6464 gcc_exec_prefix
? "" : machine_suffix
);
6465 printf (_("programs: %s\n"),
6466 build_search_list (&exec_prefixes
, "", false, false));
6467 printf (_("libraries: %s\n"),
6468 build_search_list (&startfile_prefixes
, "", false, true));
6472 if (print_file_name
)
6474 printf ("%s\n", find_file (print_file_name
));
6478 if (print_prog_name
)
6480 char *newname
= find_a_file (&exec_prefixes
, print_prog_name
, X_OK
, 0);
6481 printf ("%s\n", (newname
? newname
: print_prog_name
));
6485 if (print_multi_lib
)
6487 print_multilib_info ();
6491 if (print_multi_directory
)
6493 if (multilib_dir
== NULL
)
6496 printf ("%s\n", multilib_dir
);
6502 if (target_system_root
)
6504 if (target_sysroot_suffix
)
6505 printf ("%s%s\n", target_system_root
, target_sysroot_suffix
);
6507 printf ("%s\n", target_system_root
);
6512 if (print_multi_os_directory
)
6514 if (multilib_os_dir
== NULL
)
6517 printf ("%s\n", multilib_os_dir
);
6521 if (print_sysroot_headers_suffix
)
6523 if (*sysroot_hdrs_suffix_spec
)
6525 printf("%s\n", (target_sysroot_hdrs_suffix
6526 ? target_sysroot_hdrs_suffix
6531 /* The error status indicates that only one set of fixed
6532 headers should be built. */
6533 fatal_error ("not configured with sysroot headers suffix");
6536 if (print_help_list
)
6542 printf (_("\nFor bug reporting instructions, please see:\n"));
6543 printf ("%s.\n", bug_report_url
);
6548 /* We do not exit here. Instead we have created a fake input file
6549 called 'help-dummy' which needs to be compiled, and we pass this
6550 on the various sub-processes, along with the --help switch.
6551 Ensure their output appears after ours. */
6552 fputc ('\n', stdout
);
6558 printf (_("%s %s%s\n"), progname
, pkgversion_string
,
6560 printf ("Copyright %s 2011 Free Software Foundation, Inc.\n",
6562 fputs (_("This is free software; see the source for copying conditions. There is NO\n\
6563 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\n"),
6568 /* We do not exit here. We use the same mechanism of --help to print
6569 the version of the sub-processes. */
6570 fputc ('\n', stdout
);
6579 fnotice (stderr
, "Target: %s\n", spec_machine
);
6580 fnotice (stderr
, "Configured with: %s\n", configuration_arguments
);
6582 #ifdef THREAD_MODEL_SPEC
6583 /* We could have defined THREAD_MODEL_SPEC to "%*" by default,
6584 but there's no point in doing all this processing just to get
6585 thread_model back. */
6586 obstack_init (&obstack
);
6587 do_spec_1 (THREAD_MODEL_SPEC
, 0, thread_model
);
6588 obstack_1grow (&obstack
, '\0');
6589 thrmod
= XOBFINISH (&obstack
, const char *);
6591 thrmod
= thread_model
;
6594 fnotice (stderr
, "Thread model: %s\n", thrmod
);
6596 /* compiler_version is truncated at the first space when initialized
6597 from version string, so truncate version_string at the first space
6598 before comparing. */
6599 for (n
= 0; version_string
[n
]; n
++)
6600 if (version_string
[n
] == ' ')
6603 if (! strncmp (version_string
, compiler_version
, n
)
6604 && compiler_version
[n
] == 0)
6605 fnotice (stderr
, "gcc version %s %s\n", version_string
,
6608 fnotice (stderr
, "gcc driver version %s %sexecuting gcc version %s\n",
6609 version_string
, pkgversion_string
, compiler_version
);
6615 if (n_infiles
== added_libraries
)
6616 fatal_error ("no input files");
6621 /* Make a place to record the compiler output file names
6622 that correspond to the input files. */
6625 i
+= lang_specific_extra_outfiles
;
6626 outfiles
= XCNEWVEC (const char *, i
);
6628 /* Record which files were specified explicitly as link input. */
6630 explicit_link_files
= XCNEWVEC (char, n_infiles
);
6632 combine_inputs
= have_o
|| flag_wpa
;
6634 for (i
= 0; (int) i
< n_infiles
; i
++)
6636 const char *name
= infiles
[i
].name
;
6637 struct compiler
*compiler
= lookup_compiler (name
,
6639 infiles
[i
].language
);
6641 if (compiler
&& !(compiler
->combinable
))
6642 combine_inputs
= false;
6644 if (lang_n_infiles
> 0 && compiler
!= input_file_compiler
6645 && infiles
[i
].language
&& infiles
[i
].language
[0] != '*')
6646 infiles
[i
].incompiler
= compiler
;
6650 input_file_compiler
= compiler
;
6651 infiles
[i
].incompiler
= compiler
;
6655 /* Since there is no compiler for this input file, assume it is a
6657 explicit_link_files
[i
] = 1;
6658 infiles
[i
].incompiler
= NULL
;
6660 infiles
[i
].compiled
= false;
6661 infiles
[i
].preprocessed
= false;
6664 if (!combine_inputs
&& have_c
&& have_o
&& lang_n_infiles
> 1)
6665 fatal_error ("cannot specify -o with -c, -S or -E with multiple files");
6667 for (i
= 0; (int) i
< n_infiles
; i
++)
6669 int this_file_error
= 0;
6671 /* Tell do_spec what to substitute for %i. */
6673 input_file_number
= i
;
6674 set_input (infiles
[i
].name
);
6676 if (infiles
[i
].compiled
)
6679 /* Use the same thing in %o, unless cp->spec says otherwise. */
6681 outfiles
[i
] = gcc_input_filename
;
6683 /* Figure out which compiler from the file's suffix. */
6686 = lookup_compiler (infiles
[i
].name
, input_filename_length
,
6687 infiles
[i
].language
);
6689 if (input_file_compiler
)
6691 /* Ok, we found an applicable compiler. Run its spec. */
6693 if (input_file_compiler
->spec
[0] == '#')
6695 error ("%s: %s compiler not installed on this system",
6696 gcc_input_filename
, &input_file_compiler
->spec
[1]);
6697 this_file_error
= 1;
6703 if (debug_check_temp_file
[0])
6704 free (debug_check_temp_file
[0]);
6705 debug_check_temp_file
[0] = NULL
;
6707 if (debug_check_temp_file
[1])
6708 free (debug_check_temp_file
[1]);
6709 debug_check_temp_file
[1] = NULL
;
6712 value
= do_spec (input_file_compiler
->spec
);
6713 infiles
[i
].compiled
= true;
6715 this_file_error
= 1;
6716 else if (compare_debug
&& debug_check_temp_file
[0])
6719 inform (0, "recompiling with -fcompare-debug");
6721 compare_debug
= -compare_debug
;
6722 n_switches
= n_switches_debug_check
[1];
6723 n_switches_alloc
= n_switches_alloc_debug_check
[1];
6724 switches
= switches_debug_check
[1];
6726 value
= do_spec (input_file_compiler
->spec
);
6728 compare_debug
= -compare_debug
;
6729 n_switches
= n_switches_debug_check
[0];
6730 n_switches_alloc
= n_switches_alloc_debug_check
[0];
6731 switches
= switches_debug_check
[0];
6735 error ("during -fcompare-debug recompilation");
6736 this_file_error
= 1;
6739 gcc_assert (debug_check_temp_file
[1]
6740 && strcmp (debug_check_temp_file
[0],
6741 debug_check_temp_file
[1]));
6744 inform (0, "comparing final insns dumps");
6746 if (compare_files (debug_check_temp_file
))
6747 this_file_error
= 1;
6752 if (debug_check_temp_file
[0])
6753 free (debug_check_temp_file
[0]);
6754 debug_check_temp_file
[0] = NULL
;
6756 if (debug_check_temp_file
[1])
6757 free (debug_check_temp_file
[1]);
6758 debug_check_temp_file
[1] = NULL
;
6763 /* If this file's name does not contain a recognized suffix,
6764 record it as explicit linker input. */
6767 explicit_link_files
[i
] = 1;
6769 /* Clear the delete-on-failure queue, deleting the files in it
6770 if this compilation failed. */
6772 if (this_file_error
)
6774 delete_failure_queue ();
6777 /* If this compilation succeeded, don't delete those files later. */
6778 clear_failure_queue ();
6781 /* Reset the input file name to the first compile/object file name, for use
6782 with %b in LINK_SPEC. We use the first input file that we can find
6783 a compiler to compile it instead of using infiles.language since for
6784 languages other than C we use aliases that we then lookup later. */
6789 for (i
= 0; i
< n_infiles
; i
++)
6790 if (infiles
[i
].incompiler
6791 || (infiles
[i
].language
&& infiles
[i
].language
[0] != '*'))
6793 set_input (infiles
[i
].name
);
6800 /* Make sure INPUT_FILE_NUMBER points to first available open
6802 input_file_number
= n_infiles
;
6803 if (lang_specific_pre_link ())
6807 /* Determine if there are any linker input files. */
6808 num_linker_inputs
= 0;
6809 for (i
= 0; (int) i
< n_infiles
; i
++)
6810 if (explicit_link_files
[i
] || outfiles
[i
] != NULL
)
6811 num_linker_inputs
++;
6813 /* Run ld to link all the compiler output files. */
6815 if (num_linker_inputs
> 0 && !seen_error () && print_subprocess_help
< 2)
6817 int tmp
= execution_count
;
6818 #ifdef HAVE_LTO_PLUGIN
6819 const char *fno_use_linker_plugin
= "fno-use-linker-plugin";
6821 const char *fuse_linker_plugin
= "fuse-linker-plugin";
6824 /* We'll use ld if we can't find collect2. */
6825 if (! strcmp (linker_name_spec
, "collect2"))
6827 char *s
= find_a_file (&exec_prefixes
, "collect2", X_OK
, false);
6829 linker_name_spec
= "ld";
6832 #ifdef HAVE_LTO_PLUGIN
6833 if (!switch_matches (fno_use_linker_plugin
,
6834 fno_use_linker_plugin
+ strlen (fno_use_linker_plugin
), 0))
6836 if (switch_matches (fuse_linker_plugin
,
6837 fuse_linker_plugin
+ strlen (fuse_linker_plugin
), 0))
6840 linker_plugin_file_spec
= find_a_file (&exec_prefixes
,
6841 LTOPLUGINSONAME
, R_OK
,
6843 if (!linker_plugin_file_spec
)
6844 fatal_error ("-fuse-linker-plugin, but " LTOPLUGINSONAME
" not found");
6846 lto_gcc_spec
= argv
[0];
6848 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
6850 putenv_from_prefixes (&exec_prefixes
, "COMPILER_PATH", false);
6851 putenv_from_prefixes (&startfile_prefixes
, LIBRARY_PATH_ENV
, true);
6853 if (print_subprocess_help
== 1)
6855 printf (_("\nLinker options\n==============\n\n"));
6856 printf (_("Use \"-Wl,OPTION\" to pass \"OPTION\""
6857 " to the linker.\n\n"));
6860 value
= do_spec (link_command_spec
);
6863 linker_was_run
= (tmp
!= execution_count
);
6866 /* If options said don't run linker,
6867 complain about input files to be given to the linker. */
6869 if (! linker_was_run
&& !seen_error ())
6870 for (i
= 0; (int) i
< n_infiles
; i
++)
6871 if (explicit_link_files
[i
]
6872 && !(infiles
[i
].language
&& infiles
[i
].language
[0] == '*'))
6873 warning (0, "%s: linker input file unused because linking not done",
6876 /* Delete some or all of the temporary files we made. */
6879 delete_failure_queue ();
6880 delete_temp_files ();
6882 if (print_help_list
)
6884 printf (("\nFor bug reporting instructions, please see:\n"));
6885 printf ("%s\n", bug_report_url
);
6889 return (signal_count
!= 0 ? 2
6890 : seen_error () ? (pass_exit_codes
? greatest_status
: 1)
6894 /* Find the proper compilation spec for the file name NAME,
6895 whose length is LENGTH. LANGUAGE is the specified language,
6896 or 0 if this file is to be passed to the linker. */
6898 static struct compiler
*
6899 lookup_compiler (const char *name
, size_t length
, const char *language
)
6901 struct compiler
*cp
;
6903 /* If this was specified by the user to be a linker input, indicate that. */
6904 if (language
!= 0 && language
[0] == '*')
6907 /* Otherwise, look for the language, if one is spec'd. */
6910 for (cp
= compilers
+ n_compilers
- 1; cp
>= compilers
; cp
--)
6911 if (cp
->suffix
[0] == '@' && !strcmp (cp
->suffix
+ 1, language
))
6914 error ("language %s not recognized", language
);
6918 /* Look for a suffix. */
6919 for (cp
= compilers
+ n_compilers
- 1; cp
>= compilers
; cp
--)
6921 if (/* The suffix `-' matches only the file name `-'. */
6922 (!strcmp (cp
->suffix
, "-") && !strcmp (name
, "-"))
6923 || (strlen (cp
->suffix
) < length
6924 /* See if the suffix matches the end of NAME. */
6925 && !strcmp (cp
->suffix
,
6926 name
+ length
- strlen (cp
->suffix
))
6931 #if defined (OS2) ||defined (HAVE_DOS_BASED_FILE_SYSTEM)
6932 /* Look again, but case-insensitively this time. */
6934 for (cp
= compilers
+ n_compilers
- 1; cp
>= compilers
; cp
--)
6936 if (/* The suffix `-' matches only the file name `-'. */
6937 (!strcmp (cp
->suffix
, "-") && !strcmp (name
, "-"))
6938 || (strlen (cp
->suffix
) < length
6939 /* See if the suffix matches the end of NAME. */
6940 && ((!strcmp (cp
->suffix
,
6941 name
+ length
- strlen (cp
->suffix
))
6942 || !strpbrk (cp
->suffix
, "ABCDEFGHIJKLMNOPQRSTUVWXYZ"))
6943 && !strcasecmp (cp
->suffix
,
6944 name
+ length
- strlen (cp
->suffix
)))
6950 if (cp
>= compilers
)
6952 if (cp
->spec
[0] != '@')
6953 /* A non-alias entry: return it. */
6956 /* An alias entry maps a suffix to a language.
6957 Search for the language; pass 0 for NAME and LENGTH
6958 to avoid infinite recursion if language not found. */
6959 return lookup_compiler (NULL
, 0, cp
->spec
+ 1);
6965 save_string (const char *s
, int len
)
6967 char *result
= XNEWVEC (char, len
+ 1);
6969 memcpy (result
, s
, len
);
6975 pfatal_with_name (const char *name
)
6977 perror_with_name (name
);
6978 delete_temp_files ();
6983 perror_with_name (const char *name
)
6985 error ("%s: %m", name
);
6989 validate_switches_from_spec (const char *spec
)
6991 const char *p
= spec
;
6994 if (c
== '%' && (*p
== '{' || *p
== '<' || (*p
== 'W' && *++p
== '{')))
6995 /* We have a switch spec. */
6996 p
= validate_switches (p
+ 1);
7000 validate_all_switches (void)
7002 struct compiler
*comp
;
7003 struct spec_list
*spec
;
7005 for (comp
= compilers
; comp
->spec
; comp
++)
7006 validate_switches_from_spec (comp
->spec
);
7008 /* Look through the linked list of specs read from the specs file. */
7009 for (spec
= specs
; spec
; spec
= spec
->next
)
7010 validate_switches_from_spec (*spec
->ptr_spec
);
7012 validate_switches_from_spec (link_command_spec
);
7015 /* Look at the switch-name that comes after START
7016 and mark as valid all supplied switches that match it. */
7019 validate_switches (const char *start
)
7021 const char *p
= start
;
7025 bool suffix
= false;
7026 bool starred
= false;
7028 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
7037 if (*p
== '.' || *p
== ',')
7041 while (ISIDNUM (*p
) || *p
== '-' || *p
== '+' || *p
== '='
7042 || *p
== ',' || *p
== '.' || *p
== '@')
7047 starred
= true, p
++;
7053 /* Mark all matching switches as valid. */
7054 for (i
= 0; i
< n_switches
; i
++)
7055 if (!strncmp (switches
[i
].part1
, atom
, len
)
7056 && (starred
|| switches
[i
].part1
[len
] == 0))
7057 switches
[i
].validated
= 1;
7061 if (*p
&& (p
[-1] == '|' || p
[-1] == '&'))
7064 if (*p
&& p
[-1] == ':')
7066 while (*p
&& *p
!= ';' && *p
!= '}')
7071 if (*p
== '{' || *p
== '<')
7072 p
= validate_switches (p
+1);
7073 else if (p
[0] == 'W' && p
[1] == '{')
7074 p
= validate_switches (p
+2);
7081 if (*p
&& p
[-1] == ';')
7095 static struct mdswitchstr
*mdswitches
;
7096 static int n_mdswitches
;
7098 /* Check whether a particular argument was used. The first time we
7099 canonicalize the switches to keep only the ones we care about. */
7102 used_arg (const char *p
, int len
)
7107 const char *replace
;
7112 static struct mswitchstr
*mswitches
;
7113 static int n_mswitches
;
7118 struct mswitchstr
*matches
;
7122 /* Break multilib_matches into the component strings of string
7123 and replacement string. */
7124 for (q
= multilib_matches
; *q
!= '\0'; q
++)
7129 = (struct mswitchstr
*) alloca ((sizeof (struct mswitchstr
)) * cnt
);
7131 q
= multilib_matches
;
7140 fatal_error ("multilib spec %qs is invalid",
7145 matches
[i
].len
= q
- matches
[i
].str
;
7147 matches
[i
].replace
= ++q
;
7148 while (*q
!= ';' && *q
!= '\0')
7151 goto invalid_matches
;
7154 matches
[i
].rep_len
= q
- matches
[i
].replace
;
7160 /* Now build a list of the replacement string for switches that we care
7161 about. Make sure we allocate at least one entry. This prevents
7162 xmalloc from calling fatal, and prevents us from re-executing this
7165 = XNEWVEC (struct mswitchstr
, n_mdswitches
+ (n_switches
? n_switches
: 1));
7166 for (i
= 0; i
< n_switches
; i
++)
7167 if ((switches
[i
].live_cond
& SWITCH_IGNORE
) == 0)
7169 int xlen
= strlen (switches
[i
].part1
);
7170 for (j
= 0; j
< cnt
; j
++)
7171 if (xlen
== matches
[j
].len
7172 && ! strncmp (switches
[i
].part1
, matches
[j
].str
, xlen
))
7174 mswitches
[n_mswitches
].str
= matches
[j
].replace
;
7175 mswitches
[n_mswitches
].len
= matches
[j
].rep_len
;
7176 mswitches
[n_mswitches
].replace
= (char *) 0;
7177 mswitches
[n_mswitches
].rep_len
= 0;
7183 /* Add MULTILIB_DEFAULTS switches too, as long as they were not present
7184 on the command line nor any options mutually incompatible with
7186 for (i
= 0; i
< n_mdswitches
; i
++)
7190 for (q
= multilib_options
; *q
!= '\0'; q
++)
7196 while (strncmp (q
, mdswitches
[i
].str
, mdswitches
[i
].len
) != 0
7197 || strchr (" /", q
[mdswitches
[i
].len
]) == NULL
)
7199 while (*q
!= ' ' && *q
!= '/' && *q
!= '\0')
7206 if (*q
!= ' ' && *q
!= '\0')
7208 while (*r
!= ' ' && *r
!= '\0')
7211 while (*q
!= ' ' && *q
!= '/' && *q
!= '\0')
7214 if (used_arg (r
, q
- r
))
7219 mswitches
[n_mswitches
].str
= mdswitches
[i
].str
;
7220 mswitches
[n_mswitches
].len
= mdswitches
[i
].len
;
7221 mswitches
[n_mswitches
].replace
= (char *) 0;
7222 mswitches
[n_mswitches
].rep_len
= 0;
7235 for (i
= 0; i
< n_mswitches
; i
++)
7236 if (len
== mswitches
[i
].len
&& ! strncmp (p
, mswitches
[i
].str
, len
))
7243 default_arg (const char *p
, int len
)
7247 for (i
= 0; i
< n_mdswitches
; i
++)
7248 if (len
== mdswitches
[i
].len
&& ! strncmp (p
, mdswitches
[i
].str
, len
))
7254 /* Work out the subdirectory to use based on the options. The format of
7255 multilib_select is a list of elements. Each element is a subdirectory
7256 name followed by a list of options followed by a semicolon. The format
7257 of multilib_exclusions is the same, but without the preceding
7258 directory. First gcc will check the exclusions, if none of the options
7259 beginning with an exclamation point are present, and all of the other
7260 options are present, then we will ignore this completely. Passing
7261 that, gcc will consider each multilib_select in turn using the same
7262 rules for matching the options. If a match is found, that subdirectory
7266 set_multilib_dir (void)
7269 unsigned int this_path_len
;
7270 const char *this_path
, *this_arg
;
7271 const char *start
, *end
;
7273 int ok
, ndfltok
, first
;
7276 start
= multilib_defaults
;
7277 while (*start
== ' ' || *start
== '\t')
7279 while (*start
!= '\0')
7282 while (*start
!= ' ' && *start
!= '\t' && *start
!= '\0')
7284 while (*start
== ' ' || *start
== '\t')
7292 mdswitches
= XNEWVEC (struct mdswitchstr
, n_mdswitches
);
7293 for (start
= multilib_defaults
; *start
!= '\0'; start
= end
+ 1)
7295 while (*start
== ' ' || *start
== '\t')
7301 for (end
= start
+ 1;
7302 *end
!= ' ' && *end
!= '\t' && *end
!= '\0'; end
++)
7305 obstack_grow (&multilib_obstack
, start
, end
- start
);
7306 obstack_1grow (&multilib_obstack
, 0);
7307 mdswitches
[i
].str
= XOBFINISH (&multilib_obstack
, const char *);
7308 mdswitches
[i
++].len
= end
- start
;
7315 p
= multilib_exclusions
;
7318 /* Ignore newlines. */
7325 /* Check the arguments. */
7332 fatal_error ("multilib exclusions %qs is invalid",
7333 multilib_exclusions
);
7343 while (*p
!= ' ' && *p
!= ';')
7346 goto invalid_exclusions
;
7350 if (*this_arg
!= '!')
7358 ok
= used_arg (this_arg
, p
- this_arg
);
7373 p
= multilib_select
;
7376 /* Ignore newlines. */
7383 /* Get the initial path. */
7390 fatal_error ("multilib select %qs is invalid",
7395 this_path_len
= p
- this_path
;
7397 /* Check the arguments. */
7404 goto invalid_select
;
7413 while (*p
!= ' ' && *p
!= ';')
7416 goto invalid_select
;
7420 if (*this_arg
!= '!')
7428 /* If this is a default argument, we can just ignore it.
7429 This is true even if this_arg begins with '!'. Beginning
7430 with '!' does not mean that this argument is necessarily
7431 inappropriate for this library: it merely means that
7432 there is a more specific library which uses this
7433 argument. If this argument is a default, we need not
7434 consider that more specific library. */
7435 ok
= used_arg (this_arg
, p
- this_arg
);
7442 if (default_arg (this_arg
, p
- this_arg
))
7451 if (this_path_len
!= 1
7452 || this_path
[0] != '.')
7454 char *new_multilib_dir
= XNEWVEC (char, this_path_len
+ 1);
7457 strncpy (new_multilib_dir
, this_path
, this_path_len
);
7458 new_multilib_dir
[this_path_len
] = '\0';
7459 q
= strchr (new_multilib_dir
, ':');
7462 multilib_dir
= new_multilib_dir
;
7469 const char *q
= this_path
, *end
= this_path
+ this_path_len
;
7471 while (q
< end
&& *q
!= ':')
7475 char *new_multilib_os_dir
= XNEWVEC (char, end
- q
);
7476 memcpy (new_multilib_os_dir
, q
+ 1, end
- q
- 1);
7477 new_multilib_os_dir
[end
- q
- 1] = '\0';
7478 multilib_os_dir
= new_multilib_os_dir
;
7486 if (multilib_dir
== NULL
&& multilib_os_dir
!= NULL
7487 && strcmp (multilib_os_dir
, ".") == 0)
7489 free (CONST_CAST (char *, multilib_os_dir
));
7490 multilib_os_dir
= NULL
;
7492 else if (multilib_dir
!= NULL
&& multilib_os_dir
== NULL
)
7493 multilib_os_dir
= multilib_dir
;
7496 /* Print out the multiple library subdirectory selection
7497 information. This prints out a series of lines. Each line looks
7498 like SUBDIRECTORY;@OPTION@OPTION, with as many options as is
7499 required. Only the desired options are printed out, the negative
7500 matches. The options are print without a leading dash. There are
7501 no spaces to make it easy to use the information in the shell.
7502 Each subdirectory is printed only once. This assumes the ordering
7503 generated by the genmultilib script. Also, we leave out ones that match
7507 print_multilib_info (void)
7509 const char *p
= multilib_select
;
7510 const char *last_path
= 0, *this_path
;
7512 unsigned int last_path_len
= 0;
7517 /* Ignore newlines. */
7524 /* Get the initial path. */
7531 fatal_error ("multilib select %qs is invalid", multilib_select
);
7537 /* When --disable-multilib was used but target defines
7538 MULTILIB_OSDIRNAMES, entries starting with .: are there just
7539 to find multilib_os_dir, so skip them from output. */
7540 if (this_path
[0] == '.' && this_path
[1] == ':')
7543 /* Check for matches with the multilib_exclusions. We don't bother
7544 with the '!' in either list. If any of the exclusion rules match
7545 all of its options with the select rule, we skip it. */
7547 const char *e
= multilib_exclusions
;
7548 const char *this_arg
;
7553 /* Ignore newlines. */
7560 /* Check the arguments. */
7569 fatal_error ("multilib exclusion %qs is invalid",
7570 multilib_exclusions
);
7581 while (*e
!= ' ' && *e
!= ';')
7584 goto invalid_exclusion
;
7592 int len
= e
- this_arg
;
7595 goto invalid_select
;
7599 while (*q
!= ' ' && *q
!= ';')
7602 goto invalid_select
;
7606 if (! strncmp (arg
, this_arg
,
7607 (len
< q
- arg
) ? q
- arg
: len
)
7608 || default_arg (this_arg
, e
- this_arg
))
7638 /* If this is a duplicate, skip it. */
7639 skip
= (last_path
!= 0
7640 && (unsigned int) (p
- this_path
) == last_path_len
7641 && ! strncmp (last_path
, this_path
, last_path_len
));
7643 last_path
= this_path
;
7644 last_path_len
= p
- this_path
;
7647 /* If this directory requires any default arguments, we can skip
7648 it. We will already have printed a directory identical to
7649 this one which does not require that default argument. */
7660 goto invalid_select
;
7667 while (*q
!= ' ' && *q
!= ';')
7670 goto invalid_select
;
7675 && default_arg (arg
, q
- arg
))
7690 for (p1
= last_path
; p1
< p
&& *p1
!= ':'; p1
++)
7701 goto invalid_select
;
7709 use_arg
= *p
!= '!';
7714 while (*p
!= ' ' && *p
!= ';')
7717 goto invalid_select
;
7729 /* If there are extra options, print them now. */
7730 if (multilib_extra
&& *multilib_extra
)
7732 int print_at
= TRUE
;
7735 for (q
= multilib_extra
; *q
!= '\0'; q
++)
7756 /* getenv built-in spec function.
7758 Returns the value of the environment variable given by its first
7759 argument, concatenated with the second argument. If the
7760 environment variable is not defined, a fatal error is issued. */
7763 getenv_spec_function (int argc
, const char **argv
)
7773 value
= getenv (argv
[0]);
7775 fatal_error ("environment variable %qs not defined", argv
[0]);
7777 /* We have to escape every character of the environment variable so
7778 they are not interpreted as active spec characters. A
7779 particularly painful case is when we are reading a variable
7780 holding a windows path complete with \ separators. */
7781 len
= strlen (value
) * 2 + strlen (argv
[1]) + 1;
7782 result
= XNEWVAR (char, len
);
7783 for (ptr
= result
; *value
; ptr
+= 2)
7789 strcpy (ptr
, argv
[1]);
7794 /* if-exists built-in spec function.
7796 Checks to see if the file specified by the absolute pathname in
7797 ARGS exists. Returns that pathname if found.
7799 The usual use for this function is to check for a library file
7800 (whose name has been expanded with %s). */
7803 if_exists_spec_function (int argc
, const char **argv
)
7805 /* Must have only one argument. */
7806 if (argc
== 1 && IS_ABSOLUTE_PATH (argv
[0]) && ! access (argv
[0], R_OK
))
7812 /* if-exists-else built-in spec function.
7814 This is like if-exists, but takes an additional argument which
7815 is returned if the first argument does not exist. */
7818 if_exists_else_spec_function (int argc
, const char **argv
)
7820 /* Must have exactly two arguments. */
7824 if (IS_ABSOLUTE_PATH (argv
[0]) && ! access (argv
[0], R_OK
))
7830 /* replace-outfile built-in spec function.
7832 This looks for the first argument in the outfiles array's name and
7833 replaces it with the second argument. */
7836 replace_outfile_spec_function (int argc
, const char **argv
)
7839 /* Must have exactly two arguments. */
7843 for (i
= 0; i
< n_infiles
; i
++)
7845 if (outfiles
[i
] && !strcmp (outfiles
[i
], argv
[0]))
7846 outfiles
[i
] = xstrdup (argv
[1]);
7851 /* remove-outfile built-in spec function.
7853 * This looks for the first argument in the outfiles array's name and
7857 remove_outfile_spec_function (int argc
, const char **argv
)
7860 /* Must have exactly one argument. */
7864 for (i
= 0; i
< n_infiles
; i
++)
7866 if (outfiles
[i
] && !strcmp (outfiles
[i
], argv
[0]))
7872 /* Given two version numbers, compares the two numbers.
7873 A version number must match the regular expression
7874 ([1-9][0-9]*|0)(\.([1-9][0-9]*|0))*
7877 compare_version_strings (const char *v1
, const char *v2
)
7882 if (regcomp (&r
, "^([1-9][0-9]*|0)(\\.([1-9][0-9]*|0))*$",
7883 REG_EXTENDED
| REG_NOSUB
) != 0)
7885 rresult
= regexec (&r
, v1
, 0, NULL
, 0);
7886 if (rresult
== REG_NOMATCH
)
7887 fatal_error ("invalid version number %qs", v1
);
7888 else if (rresult
!= 0)
7890 rresult
= regexec (&r
, v2
, 0, NULL
, 0);
7891 if (rresult
== REG_NOMATCH
)
7892 fatal_error ("invalid version number %qs", v2
);
7893 else if (rresult
!= 0)
7896 return strverscmp (v1
, v2
);
7900 /* version_compare built-in spec function.
7902 This takes an argument of the following form:
7904 <comparison-op> <arg1> [<arg2>] <switch> <result>
7906 and produces "result" if the comparison evaluates to true,
7907 and nothing if it doesn't.
7909 The supported <comparison-op> values are:
7911 >= true if switch is a later (or same) version than arg1
7913 < true if switch is an earlier version than arg1
7915 >< true if switch is arg1 or later, and earlier than arg2
7916 <> true if switch is earlier than arg1 or is arg2 or later
7918 If the switch is not present, the condition is false unless
7919 the first character of the <comparison-op> is '!'.
7922 %:version-compare(>= 10.3 mmacosx-version-min= -lmx)
7923 adds -lmx if -mmacosx-version-min=10.3.9 was passed. */
7926 version_compare_spec_function (int argc
, const char **argv
)
7930 const char *switch_value
= NULL
;
7935 fatal_error ("too few arguments to %%:version-compare");
7936 if (argv
[0][0] == '\0')
7938 if ((argv
[0][1] == '<' || argv
[0][1] == '>') && argv
[0][0] != '!')
7940 if (argc
!= nargs
+ 3)
7941 fatal_error ("too many arguments to %%:version-compare");
7943 switch_len
= strlen (argv
[nargs
+ 1]);
7944 for (i
= 0; i
< n_switches
; i
++)
7945 if (!strncmp (switches
[i
].part1
, argv
[nargs
+ 1], switch_len
)
7946 && check_live_switch (i
, switch_len
))
7947 switch_value
= switches
[i
].part1
+ switch_len
;
7949 if (switch_value
== NULL
)
7953 comp1
= compare_version_strings (switch_value
, argv
[1]);
7955 comp2
= compare_version_strings (switch_value
, argv
[2]);
7957 comp2
= -1; /* This value unused. */
7960 switch (argv
[0][0] << 8 | argv
[0][1])
7962 case '>' << 8 | '=':
7963 result
= comp1
>= 0;
7965 case '!' << 8 | '<':
7966 result
= comp1
>= 0 || switch_value
== NULL
;
7971 case '!' << 8 | '>':
7972 result
= comp1
< 0 || switch_value
== NULL
;
7974 case '>' << 8 | '<':
7975 result
= comp1
>= 0 && comp2
< 0;
7977 case '<' << 8 | '>':
7978 result
= comp1
< 0 || comp2
>= 0;
7982 fatal_error ("unknown operator %qs in %%:version-compare", argv
[0]);
7987 return argv
[nargs
+ 2];
7990 /* %:include builtin spec function. This differs from %include in that it
7991 can be nested inside a spec, and thus be conditionalized. It takes
7992 one argument, the filename, and looks for it in the startfile path.
7993 The result is always NULL, i.e. an empty expansion. */
7996 include_spec_function (int argc
, const char **argv
)
8003 file
= find_a_file (&startfile_prefixes
, argv
[0], R_OK
, true);
8004 read_specs (file
? file
: argv
[0], FALSE
);
8009 /* %:find-file spec function. This function replaces its argument by
8010 the file found thru find_file, that is the -print-file-name gcc
8013 find_file_spec_function (int argc
, const char **argv
)
8020 file
= find_file (argv
[0]);
8025 /* %:find-plugindir spec function. This function replaces its argument
8026 by the -iplugindir=<dir> option. `dir' is found thru find_file, that
8027 is the -print-file-name gcc program option. */
8029 find_plugindir_spec_function (int argc
, const char **argv ATTRIBUTE_UNUSED
)
8036 option
= concat ("-iplugindir=", find_file ("plugin"), NULL
);
8041 /* %:print-asm-header spec function. Print a banner to say that the
8042 following output is from the assembler. */
8045 print_asm_header_spec_function (int arg ATTRIBUTE_UNUSED
,
8046 const char **argv ATTRIBUTE_UNUSED
)
8048 printf (_("Assembler options\n=================\n\n"));
8049 printf (_("Use \"-Wa,OPTION\" to pass \"OPTION\" to the assembler.\n\n"));
8054 /* Compute a timestamp to initialize flag_random_seed. */
8057 get_local_tick (void)
8061 /* Get some more or less random data. */
8062 #ifdef HAVE_GETTIMEOFDAY
8066 gettimeofday (&tv
, NULL
);
8067 ret
= tv
.tv_sec
* 1000 + tv
.tv_usec
/ 1000;
8071 time_t now
= time (NULL
);
8073 if (now
!= (time_t)-1)
8074 ret
= (unsigned) now
;
8081 /* %:compare-debug-dump-opt spec function. Save the last argument,
8082 expected to be the last -fdump-final-insns option, or generate a
8086 compare_debug_dump_opt_spec_function (int arg
,
8087 const char **argv ATTRIBUTE_UNUSED
)
8092 static char random_seed
[HOST_BITS_PER_WIDE_INT
/ 4 + 3];
8095 fatal_error ("too many arguments to %%:compare-debug-dump-opt");
8097 do_spec_2 ("%{fdump-final-insns=*:%*}");
8098 do_spec_1 (" ", 0, NULL
);
8100 if (VEC_length (const_char_p
, argbuf
) > 0
8101 && strcmp (argv
[VEC_length (const_char_p
, argbuf
) - 1], "."))
8106 name
= xstrdup (argv
[VEC_length (const_char_p
, argbuf
) - 1]);
8111 const char *ext
= NULL
;
8113 if (VEC_length (const_char_p
, argbuf
) > 0)
8115 do_spec_2 ("%{o*:%*}%{!o:%{!S:%b%O}%{S:%b.s}}");
8118 else if (!compare_debug
)
8121 do_spec_2 ("%g.gkd");
8123 do_spec_1 (" ", 0, NULL
);
8125 gcc_assert (VEC_length (const_char_p
, argbuf
) > 0);
8127 name
= concat (VEC_last (const_char_p
, argbuf
), ext
, NULL
);
8129 ret
= concat ("-fdump-final-insns=", name
, NULL
);
8132 which
= compare_debug
< 0;
8133 debug_check_temp_file
[which
] = name
;
8137 unsigned HOST_WIDE_INT value
= get_local_tick () ^ getpid ();
8139 sprintf (random_seed
, HOST_WIDE_INT_PRINT_HEX
, value
);
8143 ret
= concat ("%{!frandom-seed=*:-frandom-seed=", random_seed
, "} ",
8152 static const char *debug_auxbase_opt
;
8154 /* %:compare-debug-self-opt spec function. Expands to the options
8155 that are to be passed in the second compilation of
8159 compare_debug_self_opt_spec_function (int arg
,
8160 const char **argv ATTRIBUTE_UNUSED
)
8163 fatal_error ("too many arguments to %%:compare-debug-self-opt");
8165 if (compare_debug
>= 0)
8168 do_spec_2 ("%{c|S:%{o*:%*}}");
8169 do_spec_1 (" ", 0, NULL
);
8171 if (VEC_length (const_char_p
, argbuf
) > 0)
8172 debug_auxbase_opt
= concat ("-auxbase-strip ",
8173 VEC_last (const_char_p
, argbuf
),
8176 debug_auxbase_opt
= NULL
;
8179 %<o %<MD %<MMD %<MF* %<MG %<MP %<MQ* %<MT* \
8180 %<fdump-final-insns=* -w -S -o %j \
8181 %{!fcompare-debug-second:-fcompare-debug-second} \
8182 ", compare_debug_opt
, NULL
);
8185 /* %:compare-debug-auxbase-opt spec function. Expands to the auxbase
8186 options that are to be passed in the second compilation of
8187 compare-debug. It expects, as an argument, the basename of the
8188 current input file name, with the .gk suffix appended to it. */
8191 compare_debug_auxbase_opt_spec_function (int arg
,
8198 fatal_error ("too few arguments to %%:compare-debug-auxbase-opt");
8201 fatal_error ("too many arguments to %%:compare-debug-auxbase-opt");
8203 if (compare_debug
>= 0)
8206 len
= strlen (argv
[0]);
8207 if (len
< 3 || strcmp (argv
[0] + len
- 3, ".gk") != 0)
8208 fatal_error ("argument to %%:compare-debug-auxbase-opt "
8209 "does not end in .gk");
8211 if (debug_auxbase_opt
)
8212 return debug_auxbase_opt
;
8214 #define OPT "-auxbase "
8217 name
= (char*) xmalloc (sizeof (OPT
) + len
);
8218 memcpy (name
, OPT
, sizeof (OPT
) - 1);
8219 memcpy (name
+ sizeof (OPT
) - 1, argv
[0], len
);
8220 name
[sizeof (OPT
) - 1 + len
] = '\0';
8227 /* %:pass-through-libs spec function. Finds all -l options and input
8228 file names in the lib spec passed to it, and makes a list of them
8229 prepended with the plugin option to cause them to be passed through
8230 to the final link after all the new object files have been added. */
8233 pass_through_libs_spec_func (int argc
, const char **argv
)
8235 char *prepended
= xstrdup (" ");
8237 /* Shlemiel the painter's algorithm. Innately horrible, but at least
8238 we know that there will never be more than a handful of strings to
8239 concat, and it's only once per run, so it's not worth optimising. */
8240 for (n
= 0; n
< argc
; n
++)
8242 char *old
= prepended
;
8243 /* Anything that isn't an option is a full path to an output
8244 file; pass it through if it ends in '.a'. Among options,
8246 if (argv
[n
][0] == '-' && argv
[n
][1] == 'l')
8248 const char *lopt
= argv
[n
] + 2;
8249 /* Handle both joined and non-joined -l options. If for any
8250 reason there's a trailing -l with no joined or following
8251 arg just discard it. */
8252 if (!*lopt
&& ++n
>= argc
)
8256 prepended
= concat (prepended
, "-plugin-opt=-pass-through=-l",
8259 else if (!strcmp (".a", argv
[n
] + strlen (argv
[n
]) - 2))
8261 prepended
= concat (prepended
, "-plugin-opt=-pass-through=",
8262 argv
[n
], " ", NULL
);
8264 if (prepended
!= old
)