1 /* Compiler driver program that can handle many languages.
2 Copyright (C) 1987, 1989, 1992 Free Software Foundation, Inc.
4 This file is part of GNU CC.
6 GNU CC is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2, or (at your option)
11 GNU CC is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with GNU CC; see the file COPYING. If not, write to
18 the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
20 This paragraph is here to try to keep Sun CC from dying.
21 The number of chars here seems crucial!!!! */
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". */
33 #include <sys/types.h>
37 #include <sys/file.h> /* May get R_OK, etc. on some systems. */
50 /* Define a generic NULL if one hasn't already been defined. */
57 #if defined (USE_PROTOTYPES) ? USE_PROTOTYPES : defined (__STDC__)
58 #define GENERIC_PTR void *
60 #define GENERIC_PTR char *
65 #define NULL_PTR ((GENERIC_PTR)0)
72 /* On MSDOS, write temp files in current dir
73 because there's no place else we can expect to use. */
80 /* Test if something is a normal file. */
82 #define S_ISREG(m) (((m) & S_IFMT) == S_IFREG)
85 /* Test if something is a directory. */
87 #define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
90 /* By default there is no special suffix for executables. */
91 #ifndef EXECUTABLE_SUFFIX
92 #define EXECUTABLE_SUFFIX ""
95 /* By default, colon separates directories in a path. */
96 #ifndef PATH_SEPARATOR
97 #define PATH_SEPARATOR ':'
100 #define obstack_chunk_alloc xmalloc
101 #define obstack_chunk_free free
104 extern char *getenv ();
106 extern int errno
, sys_nerr
;
107 extern char *sys_errlist
[];
109 extern int execv (), execvp ();
111 /* If a stage of compilation returns an exit status >= 1,
112 compilation of that file ceases. */
114 #define MIN_FATAL_STATUS 1
116 /* Flag saying to print the full filename of libgcc.a
117 as found through our usual search mechanism. */
119 static int print_libgcc_file_name
;
121 /* Flag indicating whether we should print the command and arguments */
123 static int verbose_flag
;
125 /* Nonzero means write "temp" files in source directory
126 and use the source file's name in them, and don't delete them. */
128 static int save_temps_flag
;
130 /* The compiler version specified with -V */
132 static char *spec_version
;
134 /* The target machine specified with -b. */
136 static char *spec_machine
= DEFAULT_TARGET_MACHINE
;
138 /* Nonzero if cross-compiling.
139 When -b is used, the value comes from the `specs' file. */
142 static int cross_compile
= 1;
144 static int cross_compile
= 0;
147 /* This is the obstack which we use to allocate many strings. */
149 static struct obstack obstack
;
151 /* This is the obstack to build an environment variable to pass to
152 collect2 that describes all of the relevant switches of what to
153 pass the compiler in building the list of pointers to constructors
156 static struct obstack collect_obstack
;
158 extern char *version_string
;
160 static void set_spec ();
161 static struct compiler
*lookup_compiler ();
162 static char *find_a_file ();
163 static void add_prefix ();
164 static char *skip_whitespace ();
165 static void record_temp_file ();
166 static char *handle_braces ();
167 static char *save_string ();
168 static char *concat ();
169 static int do_spec ();
170 static int do_spec_1 ();
171 static char *find_file ();
172 static int is_linker_dir ();
173 static void validate_switches ();
174 static void validate_all_switches ();
175 static void give_switch ();
176 static void pfatal_with_name ();
177 static void perror_with_name ();
178 static void perror_exec ();
179 static void fatal ();
180 static void error ();
185 /* Specs are strings containing lines, each of which (if not blank)
186 is made up of a program name, and arguments separated by spaces.
187 The program name must be exact and start from root, since no path
188 is searched and it is unreliable to depend on the current working directory.
189 Redirection of input or output is not supported; the subprograms must
190 accept filenames saying what files to read and write.
192 In addition, the specs can contain %-sequences to substitute variable text
193 or for conditional text. Here is a table of all defined %-sequences.
194 Note that spaces are not generated automatically around the results of
195 expanding these sequences; therefore, you can concatenate them together
196 or with constant text in a single argument.
198 %% substitute one % into the program name or argument.
199 %i substitute the name of the input file being processed.
200 %b substitute the basename of the input file being processed.
201 This is the substring up to (and not including) the last period
202 and not including the directory.
203 %g substitute the temporary-file-name-base. This is a string chosen
204 once per compilation. Different temporary file names are made by
205 concatenation of constant strings on the end, as in `%g.s'.
206 %g also has the same effect of %d.
207 %u like %g, but make the temporary file name unique.
208 %U returns the last file name generated with %u.
209 %d marks the argument containing or following the %d as a
210 temporary file name, so that that file will be deleted if CC exits
211 successfully. Unlike %g, this contributes no text to the argument.
212 %w marks the argument containing or following the %w as the
213 "output file" of this compilation. This puts the argument
214 into the sequence of arguments that %o will substitute later.
216 like %{...} but mark last argument supplied within
217 as a file to be deleted on failure.
218 %o substitutes the names of all the output files, with spaces
219 automatically placed around them. You should write spaces
220 around the %o as well or the results are undefined.
221 %o is for use in the specs for running the linker.
222 Input files whose names have no recognized suffix are not compiled
223 at all, but they are included among the output files, so they will
225 %p substitutes the standard macro predefinitions for the
226 current target machine. Use this when running cpp.
227 %P like %p, but puts `__' before and after the name of each macro.
228 (Except macros that already have __.)
230 %I Substitute a -iprefix option made from GCC_EXEC_PREFIX.
231 %s current argument is the name of a library or startup file of some sort.
232 Search for that file in a standard list of directories
233 and substitute the full name found.
234 %eSTR Print STR as an error message. STR is terminated by a newline.
235 Use this when inconsistent options are detected.
236 %x{OPTION} Accumulate an option for %X.
237 %X Output the accumulated linker options specified by compilations.
238 %Y Output the accumulated assembler options specified by compilations.
239 %a process ASM_SPEC as a spec.
240 This allows config.h to specify part of the spec for running as.
241 %A process ASM_FINAL_SPEC as a spec. A capital A is actually
242 used here. This can be used to run a post-processor after the
243 assembler has done it's job.
244 %D Dump out a -L option for each directory in library_prefix,
245 followed by a -L option for each directory in startfile_prefix.
246 %l process LINK_SPEC as a spec.
247 %L process LIB_SPEC as a spec.
248 %S process STARTFILE_SPEC as a spec. A capital S is actually used here.
249 %E process ENDFILE_SPEC as a spec. A capital E is actually used here.
250 %c process SIGNED_CHAR_SPEC as a spec.
251 %C process CPP_SPEC as a spec. A capital C is actually used here.
252 %1 process CC1_SPEC as a spec.
253 %2 process CC1PLUS_SPEC as a spec.
254 %* substitute the variable part of a matched option. (See below.)
255 Note that each comma in the substituted string is replaced by
257 %{S} substitutes the -S switch, if that switch was given to CC.
258 If that switch was not specified, this substitutes nothing.
259 Here S is a metasyntactic variable.
260 %{S*} substitutes all the switches specified to CC whose names start
261 with -S. This is used for -o, -D, -I, etc; switches that take
262 arguments. CC considers `-o foo' as being one switch whose
263 name starts with `o'. %{o*} would substitute this text,
264 including the space; thus, two arguments would be generated.
265 %{S*:X} substitutes X if one or more switches whose names with -S are
266 specified to CC. Note that the tail part of the -S option
267 (i.e. the part matched by the `*') will be substituted for each
268 occurrence of %* within X.
269 %{S:X} substitutes X, but only if the -S switch was given to CC.
270 %{!S:X} substitutes X, but only if the -S switch was NOT given to CC.
271 %{|S:X} like %{S:X}, but if no S switch, substitute `-'.
272 %{|!S:X} like %{!S:X}, but if there is an S switch, substitute `-'.
273 %{.S:X} substitutes X, but only if processing a file with suffix S.
274 %{!.S:X} substitutes X, but only if NOT processing a file with suffix S.
275 %(Spec) processes a specification defined in a specs file as *Spec:
276 %[Spec] as above, but put __ around -D arguments
278 The conditional text X in a %{S:X} or %{!S:X} construct may contain
279 other nested % constructs or spaces, or even newlines. They are
280 processed as usual, as described above.
282 The character | is used to indicate that a command should be piped to
283 the following command, but only if -pipe is specified.
285 Note that it is built into CC which switches take arguments and which
286 do not. You might think it would be useful to generalize this to
287 allow each compiler's spec to say which switches take arguments. But
288 this cannot be done in a consistent fashion. CC cannot even decide
289 which input files have been specified without knowing which switches
290 take arguments, and it must know which input files to compile in order
291 to tell which compilers to run.
293 CC also knows implicitly that arguments starting in `-l' are to be
294 treated as compiler output files, and passed to the linker in their
295 proper position among the other output files. */
297 /* Define the macros used for specs %a, %l, %L, %S, %c, %C, %1. */
299 /* config.h can define ASM_SPEC to provide extra args to the assembler
300 or extra switch-translations. */
305 /* config.h can define ASM_FINAL_SPEC to run a post processor after
306 the assembler has run. */
307 #ifndef ASM_FINAL_SPEC
308 #define ASM_FINAL_SPEC ""
311 /* config.h can define CPP_SPEC to provide extra args to the C preprocessor
312 or extra switch-translations. */
317 /* config.h can define CC1_SPEC to provide extra args to cc1 and cc1plus
318 or extra switch-translations. */
323 /* config.h can define CC1PLUS_SPEC to provide extra args to cc1plus
324 or extra switch-translations. */
326 #define CC1PLUS_SPEC ""
329 /* config.h can define LINK_SPEC to provide extra args to the linker
330 or extra switch-translations. */
335 /* config.h can define LIB_SPEC to override the default libraries. */
337 #define LIB_SPEC "%{g*:-lg} %{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p}"
340 /* config.h can define STARTFILE_SPEC to override the default crt0 files. */
341 #ifndef STARTFILE_SPEC
342 #define STARTFILE_SPEC \
343 "%{pg:gcrt0.o%s}%{!pg:%{p:mcrt0.o%s}%{!p:crt0.o%s}}"
346 /* config.h can define SWITCHES_NEED_SPACES to control passing -o and -L.
347 Make the string nonempty to require spaces there. */
348 #ifndef SWITCHES_NEED_SPACES
349 #define SWITCHES_NEED_SPACES ""
352 /* config.h can define ENDFILE_SPEC to override the default crtn files. */
354 #define ENDFILE_SPEC ""
357 /* This spec is used for telling cpp whether char is signed or not. */
358 #ifndef SIGNED_CHAR_SPEC
359 /* Use #if rather than ?:
360 because MIPS C compiler rejects like ?: in initializers. */
361 #if DEFAULT_SIGNED_CHAR
362 #define SIGNED_CHAR_SPEC "%{funsigned-char:-D__CHAR_UNSIGNED__}"
364 #define SIGNED_CHAR_SPEC "%{!fsigned-char:-D__CHAR_UNSIGNED__}"
368 static char *cpp_spec
= CPP_SPEC
;
369 static char *cpp_predefines
= CPP_PREDEFINES
;
370 static char *cc1_spec
= CC1_SPEC
;
371 static char *cc1plus_spec
= CC1PLUS_SPEC
;
372 static char *signed_char_spec
= SIGNED_CHAR_SPEC
;
373 static char *asm_spec
= ASM_SPEC
;
374 static char *asm_final_spec
= ASM_FINAL_SPEC
;
375 static char *link_spec
= LINK_SPEC
;
376 static char *lib_spec
= LIB_SPEC
;
377 static char *endfile_spec
= ENDFILE_SPEC
;
378 static char *startfile_spec
= STARTFILE_SPEC
;
379 static char *switches_need_spaces
= SWITCHES_NEED_SPACES
;
381 /* This defines which switch letters take arguments. */
383 #ifndef SWITCH_TAKES_ARG
384 #define SWITCH_TAKES_ARG(CHAR) \
385 ((CHAR) == 'D' || (CHAR) == 'U' || (CHAR) == 'o' \
386 || (CHAR) == 'e' || (CHAR) == 'T' || (CHAR) == 'u' \
387 || (CHAR) == 'I' || (CHAR) == 'm' \
388 || (CHAR) == 'L' || (CHAR) == 'A')
391 /* This defines which multi-letter switches take arguments. */
393 #ifndef WORD_SWITCH_TAKES_ARG
394 #define WORD_SWITCH_TAKES_ARG(STR) \
395 (!strcmp (STR, "Tdata") || !strcmp (STR, "include") \
396 || !strcmp (STR, "imacros") || !strcmp (STR, "aux-info"))
399 /* Record the mapping from file suffixes for compilation specs. */
403 char *suffix
; /* Use this compiler for input files
404 whose names end in this suffix. */
406 char *spec
[4]; /* To use this compiler, concatenate these
407 specs and pass to do_spec. */
410 /* Pointer to a vector of `struct compiler' that gives the spec for
411 compiling a file, based on its suffix.
412 A file that does not end in any of these suffixes will be passed
413 unchanged to the loader and nothing else will be done to it.
415 An entry containing two 0s is used to terminate the vector.
417 If multiple entries match a file, the last matching one is used. */
419 static struct compiler
*compilers
;
421 /* Number of entries in `compilers', not counting the null terminator. */
423 static int n_compilers
;
425 /* The default list of file name suffixes and their compilation specs. */
427 static struct compiler default_compilers
[] =
431 "cpp -lang-c %{nostdinc*} %{C} %{v} %{A*} %{D*} %{U*} %{I*} %{i*} %{P} %I\
432 %{C:%{!E:%eGNU C does not support -C without using -E}}\
433 %{M} %{MM} %{MD:-MD %b.d} %{MMD:-MMD %b.d}\
434 -undef -D__GNUC__=2 %{ansi:-trigraphs -$ -D__STRICT_ANSI__}\
435 %{!undef:%{!ansi:%p} %P} %{trigraphs}\
436 %c %{O*:-D__OPTIMIZE__} %{traditional} %{ftraditional:-traditional}\
437 %{traditional-cpp:-traditional}\
438 %{g*} %{W*} %{w} %{pedantic*} %{H} %{d*} %C\
439 %i %{!M:%{!MM:%{!E:%{!pipe:%g.i}}}}%{E:%W{o*}}%{M:%W{o*}}%{MM:%W{o*}} |\n",
440 "%{!M:%{!MM:%{!E:cc1 %{!pipe:%g.i} %1 \
441 %{!Q:-quiet} -dumpbase %b.c %{d*} %{m*} %{a}\
442 %{g*} %{O*} %{W*} %{w} %{pedantic*} %{ansi} \
443 %{traditional} %{v:-version} %{pg:-p} %{p} %{f*}\
445 %{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\
446 %{S:%W{o*}%{!o*:-o %b.s}}%{!S:-o %{|!pipe:%g.s}} |\n\
447 %{!S:as %{R} %{j} %{J} %{h} %{d2} %a %Y\
448 %{c:%W{o*}%{!o*:-o %w%b.o}}%{!c:-o %d%w%u.o}\
449 %{!pipe:%g.s} %A\n }}}}"},
451 "%{E:cpp -lang-c %{nostdinc*} %{C} %{v} %{A*} %{D*} %{U*} %{I*} %{i*} %{P} %I\
452 %{C:%{!E:%eGNU C does not support -C without using -E}}\
453 %{M} %{MM} %{MD:-MD %b.d} %{MMD:-MMD %b.d}\
454 -undef -D__GNUC__=2 %{ansi:-trigraphs -$ -D__STRICT_ANSI__}\
455 %{!undef:%{!ansi:%p} %P} %{trigraphs}\
456 %c %{O*:-D__OPTIMIZE__} %{traditional} %{ftraditional:-traditional}\
457 %{traditional-cpp:-traditional}\
458 %{g*} %{W*} %{w} %{pedantic*} %{H} %{d*} %C\
460 %{!E:%e-E required when input is from standard input}"},
461 {".m", "@objective-c"},
463 "cpp -lang-objc %{nostdinc*} %{C} %{v} %{A*} %{D*} %{U*} %{I*} %{i*} %{P} %I\
464 %{C:%{!E:%eGNU C does not support -C without using -E}}\
465 %{M} %{MM} %{MD:-MD %b.d} %{MMD:-MMD %b.d}\
466 -undef -D__OBJC__ -D__GNUC__=2 %{ansi:-trigraphs -$ -D__STRICT_ANSI__}\
467 %{!undef:%{!ansi:%p} %P} %{trigraphs}\
468 %c %{O*:-D__OPTIMIZE__} %{traditional} %{ftraditional:-traditional}\
469 %{traditional-cpp:-traditional}\
470 %{g*} %{W*} %{w} %{pedantic*} %{H} %{d*} %C\
471 %i %{!M:%{!MM:%{!E:%{!pipe:%g.i}}}}%{E:%W{o*}}%{M:%W{o*}}%{MM:%W{o*}} |\n",
472 "%{!M:%{!MM:%{!E:cc1obj %{!pipe:%g.i} %1 \
473 %{!Q:-quiet} -dumpbase %b.m %{d*} %{m*} %{a}\
474 %{g*} %{O*} %{W*} %{w} %{pedantic*} %{ansi} \
475 %{traditional} %{v:-version} %{pg:-p} %{p} %{f*} \
476 -lang-objc %{gen-decls} \
478 %{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\
479 %{S:%W{o*}%{!o*:-o %b.s}}%{!S:-o %{|!pipe:%g.s}} |\n\
480 %{!S:as %{R} %{j} %{J} %{h} %{d2} %a %Y\
481 %{c:%W{o*}%{!o*:-o %w%b.o}}%{!c:-o %d%w%u.o}\
482 %{!pipe:%g.s} %A\n }}}}"},
485 "%{!E:%eCompilation of header file requested} \
486 cpp %{nostdinc*} %{C} %{v} %{A*} %{D*} %{U*} %{I*} %{i*} %{P} %I\
487 %{C:%{!E:%eGNU C does not support -C without using -E}}\
488 %{M} %{MM} %{MD:-MD %b.d} %{MMD:-MMD %b.d} \
489 -undef -D__GNUC__=2 %{ansi:-trigraphs -$ -D__STRICT_ANSI__}\
490 %{!undef:%{!ansi:%p} %P} %{trigraphs}\
491 %c %{O*:-D__OPTIMIZE__} %{traditional} %{ftraditional:-traditional}\
492 %{traditional-cpp:-traditional}\
493 %{g*} %{W*} %{w} %{pedantic*} %{H} %{d*} %C\
499 "cpp -lang-c++ %{nostdinc*} %{C} %{v} %{A*} %{D*} %{U*} %{I*} %{i*} %{P} %I\
500 %{C:%{!E:%eGNU C++ does not support -C without using -E}}\
501 %{M} %{MM} %{MD:-MD %b.d} %{MMD:-MMD %b.d} \
502 -undef -D__GNUC__=2 -D__GNUG__=2 -D__cplusplus \
503 %{ansi:-trigraphs -$ -D__STRICT_ANSI__} %{!undef:%{!ansi:%p} %P}\
504 %c %{O*:-D__OPTIMIZE__} %{traditional} %{ftraditional:-traditional}\
505 %{traditional-cpp:-traditional} %{trigraphs}\
506 %{g*} %{W*} %{w} %{pedantic*} %{H} %{d*} %C\
507 %i %{!M:%{!MM:%{!E:%{!pipe:%g.i}}}}%{E:%W{o*}}%{M:%W{o*}}%{MM:%W{o*}} |\n",
508 "%{!M:%{!MM:%{!E:cc1plus %{!pipe:%g.i} %1 %2\
509 %{!Q:-quiet} -dumpbase %b.cc %{d*} %{m*} %{a}\
510 %{g*} %{O*} %{W*} %{w} %{pedantic*} %{ansi} %{traditional}\
511 %{v:-version} %{pg:-p} %{p} %{f*} %{+e*}\
513 %{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\
514 %{S:%W{o*}%{!o*:-o %b.s}}%{!S:-o %{|!pipe:%g.s}} |\n\
515 %{!S:as %{R} %{j} %{J} %{h} %{d2} %a %Y\
516 %{c:%W{o*}%{!o*:-o %w%b.o}}%{!c:-o %d%w%u.o}\
517 %{!pipe:%g.s} %A\n }}}}"},
518 {".i", "@cpp-output"},
520 "cc1 %i %1 %{!Q:-quiet} %{d*} %{m*} %{a}\
521 %{g*} %{O*} %{W*} %{w} %{pedantic*} %{ansi} %{traditional}\
522 %{v:-version} %{pg:-p} %{p} %{f*}\
524 %{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\
525 %{S:%W{o*}%{!o*:-o %b.s}}%{!S:-o %{|!pipe:%g.s}} |\n\
526 %{!S:as %{R} %{j} %{J} %{h} %{d2} %a %Y\
527 %{c:%W{o*}%{!o*:-o %w%b.o}}%{!c:-o %d%w%u.o} %{!pipe:%g.s} %A\n }"},
528 {".ii", "@c++-cpp-output"},
530 "cc1plus %i %1 %2 %{!Q:-quiet} %{d*} %{m*} %{a}\
531 %{g*} %{O*} %{W*} %{w} %{pedantic*} %{ansi} %{traditional}\
532 %{v:-version} %{pg:-p} %{p} %{f*} %{+e*}\
534 %{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\
535 %{S:%W{o*}%{!o*:-o %b.s}}%{!S:-o %{|!pipe:%g.s}} |\n\
536 %{!S:as %{R} %{j} %{J} %{h} %{d2} %a %Y\
537 %{c:%W{o*}%{!o*:-o %w%b.o}}%{!c:-o %d%w%u.o}\
538 %{!pipe:%g.s} %A\n }"},
539 {".s", "@assembler"},
541 "%{!S:as %{R} %{j} %{J} %{h} %{d2} %a %Y\
542 %{c:%W{o*}%{!o*:-o %w%b.o}}%{!c:-o %d%w%u.o} %i %A\n }"},
543 {".S", "@assembler-with-cpp"},
544 {"@assembler-with-cpp",
545 "cpp -lang-asm %{nostdinc*} %{C} %{v} %{A*} %{D*} %{U*} %{I*} %{i*} %{P} %I\
546 %{C:%{!E:%eGNU C does not support -C without using -E}}\
547 %{M} %{MM} %{MD:-MD %b.d} %{MMD:-MMD %b.d} %{trigraphs} \
548 -undef -$ %{!undef:%p %P} -D__ASSEMBLER__ \
549 %c %{O*:-D__OPTIMIZE__} %{traditional} %{ftraditional:-traditional}\
550 %{traditional-cpp:-traditional}\
551 %{g*} %{W*} %{w} %{pedantic*} %{H} %{d*} %C\
552 %i %{!M:%{!MM:%{!E:%{!pipe:%g.s}}}}%{E:%W{o*}}%{M:%W{o*}}%{MM:%W{o*}} |\n",
553 "%{!M:%{!MM:%{!E:%{!S:as %{R} %{j} %{J} %{h} %{d2} %a %Y\
554 %{c:%W{o*}%{!o*:-o %w%b.o}}%{!c:-o %d%w%u.o}\
555 %{!pipe:%g.s} %A\n }}}}"},
556 /* Mark end of table */
560 /* Number of elements in default_compilers, not counting the terminator. */
562 static int n_default_compilers
563 = (sizeof default_compilers
/ sizeof (struct compiler
)) - 1;
565 /* Here is the spec for running the linker, after compiling all files. */
567 #ifdef LINK_LIBGCC_SPECIAL
568 /* Have gcc do the search for libgcc.a. */
569 /* -u* was put back because both BSD and SysV seem to support it. */
570 /* %{static:} simply prevents an error message if the target machine
571 doesn't handle -static. */
572 static char *link_command_spec
= "\
573 %{!c:%{!M:%{!MM:%{!E:%{!S:ld %l %X %{o*} %{A} %{d} %{e*} %{m} %{N} %{n} \
574 %{r} %{s} %{T*} %{t} %{u*} %{x} %{z}\
575 %{!A:%{!nostdlib:%S}} %{static:}\
576 %{L*} %o %{!nostdlib:libgcc.a%s %L libgcc.a%s %{!A:%E}}\n }}}}}";
578 /* Use -L and have the linker do the search for -lgcc. */
579 static char *link_command_spec
= "\
580 %{!c:%{!M:%{!MM:%{!E:%{!S:ld %l %X %{o*} %{A} %{d} %{e*} %{m} %{N} %{n} \
581 %{r} %{s} %{T*} %{t} %{u*} %{x} %{z}\
582 %{!A:%{!nostdlib:%S}} %{static:}\
583 %{L*} %D %o %{!nostdlib:-lgcc %L -lgcc %{!A:%E}}\n }}}}}";
586 /* A vector of options to give to the linker.
587 These options are accumulated by -Xlinker and -Wl,
588 and substituted into the linker command with %X. */
589 static int n_linker_options
;
590 static char **linker_options
;
592 /* A vector of options to give to the assembler.
593 These options are accumulated by -Wa,
594 and substituted into the assembler command with %X. */
595 static int n_assembler_options
;
596 static char **assembler_options
;
598 /* Read compilation specs from a file named FILENAME,
599 replacing the default ones.
601 A suffix which starts with `*' is a definition for
602 one of the machine-specific sub-specs. The "suffix" should be
603 *asm, *cc1, *cpp, *link, *startfile, *signed_char, etc.
604 The corresponding spec is stored in asm_spec, etc.,
605 rather than in the `compilers' vector.
607 Anything invalid in the file is a fatal error. */
610 read_specs (filename
)
619 fprintf (stderr
, "Reading specs from %s\n", filename
);
621 /* Open and stat the file. */
622 desc
= open (filename
, 0, 0);
624 pfatal_with_name (filename
);
625 if (stat (filename
, &statbuf
) < 0)
626 pfatal_with_name (filename
);
628 /* Read contents of file into BUFFER. */
629 buffer
= xmalloc ((unsigned) statbuf
.st_size
+ 1);
630 read (desc
, buffer
, (unsigned) statbuf
.st_size
);
631 buffer
[statbuf
.st_size
] = 0;
634 /* Scan BUFFER for specs, putting them in the vector. */
640 char *in
, *out
, *p1
, *p2
;
642 /* Advance P in BUFFER to the next nonblank nocomment line. */
643 p
= skip_whitespace (p
);
647 /* Find the colon that should end the suffix. */
649 while (*p1
&& *p1
!= ':' && *p1
!= '\n') p1
++;
650 /* The colon shouldn't be missing. */
652 fatal ("specs file malformed after %d characters", p1
- buffer
);
653 /* Skip back over trailing whitespace. */
655 while (p2
> buffer
&& (p2
[-1] == ' ' || p2
[-1] == '\t')) p2
--;
656 /* Copy the suffix to a string. */
657 suffix
= save_string (p
, p2
- p
);
658 /* Find the next line. */
659 p
= skip_whitespace (p1
+ 1);
661 fatal ("specs file malformed after %d characters", p
- buffer
);
663 /* Find next blank line. */
664 while (*p1
&& !(*p1
== '\n' && p1
[1] == '\n')) p1
++;
665 /* Specs end at the blank line and do not include the newline. */
666 spec
= save_string (p
, p1
- p
);
669 /* Delete backslash-newline sequences from the spec. */
674 if (in
[0] == '\\' && in
[1] == '\n')
676 else if (in
[0] == '#')
678 while (*in
&& *in
!= '\n') in
++;
685 if (suffix
[0] == '*')
687 if (! strcmp (suffix
, "*link_command"))
688 link_command_spec
= spec
;
690 set_spec (suffix
+ 1, spec
);
694 /* Add this pair to the vector. */
696 = ((struct compiler
*)
697 xrealloc (compilers
, (n_compilers
+ 2) * sizeof (struct compiler
)));
698 compilers
[n_compilers
].suffix
= suffix
;
699 bzero (compilers
[n_compilers
].spec
,
700 sizeof compilers
[n_compilers
].spec
);
701 compilers
[n_compilers
].spec
[0] = spec
;
706 link_command_spec
= spec
;
709 if (link_command_spec
== 0)
710 fatal ("spec file has no spec for linking");
719 /* A fully-blank line is a delimiter in the SPEC file and shouldn't
720 be considered whitespace. */
721 if (p
[0] == '\n' && p
[1] == '\n' && p
[2] == '\n')
723 else if (*p
== '\n' || *p
== ' ' || *p
== '\t')
727 while (*p
!= '\n') p
++;
737 /* Structure to keep track of the specs that have been defined so far. These
738 are accessed using %(specname) or %[specname] in a compiler or link spec. */
742 char *name
; /* Name of the spec. */
743 char *spec
; /* The spec itself. */
744 struct spec_list
*next
; /* Next spec in linked list. */
747 /* List of specs that have been defined so far. */
749 static struct spec_list
*specs
= (struct spec_list
*) 0;
751 /* Change the value of spec NAME to SPEC. If SPEC is empty, then the spec is
752 removed; If the spec starts with a + then SPEC is added to the end of the
756 set_spec (name
, spec
)
760 struct spec_list
*sl
;
763 /* See if the spec already exists */
764 for (sl
= specs
; sl
; sl
= sl
->next
)
765 if (strcmp (sl
->name
, name
) == 0)
770 /* Not found - make it */
771 sl
= (struct spec_list
*) xmalloc (sizeof (struct spec_list
));
772 sl
->name
= save_string (name
, strlen (name
));
773 sl
->spec
= save_string ("", 0);
779 if (name
&& spec
[0] == '+' && isspace (spec
[1]))
780 sl
->spec
= concat (old_spec
, spec
+ 1, "");
782 sl
->spec
= save_string (spec
, strlen (spec
));
784 if (! strcmp (name
, "asm"))
786 else if (! strcmp (name
, "asm_final"))
787 asm_final_spec
= sl
->spec
;
788 else if (! strcmp (name
, "cc1"))
790 else if (! strcmp (name
, "cc1plus"))
791 cc1plus_spec
= sl
->spec
;
792 else if (! strcmp (name
, "cpp"))
794 else if (! strcmp (name
, "endfile"))
795 endfile_spec
= sl
->spec
;
796 else if (! strcmp (name
, "lib"))
798 else if (! strcmp (name
, "link"))
799 link_spec
= sl
->spec
;
800 else if (! strcmp (name
, "predefines"))
801 cpp_predefines
= sl
->spec
;
802 else if (! strcmp (name
, "signed_char"))
803 signed_char_spec
= sl
->spec
;
804 else if (! strcmp (name
, "startfile"))
805 startfile_spec
= sl
->spec
;
806 else if (! strcmp (name
, "switches_need_spaces"))
807 switches_need_spaces
= sl
->spec
;
808 else if (! strcmp (name
, "cross_compile"))
809 cross_compile
= atoi (sl
->spec
);
810 /* Free the old spec */
815 /* Accumulate a command (program name and args), and run it. */
817 /* Vector of pointers to arguments in the current line of specifications. */
819 static char **argbuf
;
821 /* Number of elements allocated in argbuf. */
823 static int argbuf_length
;
825 /* Number of elements in argbuf currently in use (containing args). */
827 static int argbuf_index
;
829 /* Number of commands executed so far. */
831 static int execution_count
;
833 /* Number of commands that exited with a signal. */
835 static int signal_count
;
837 /* Name with which this program was invoked. */
839 static char *programname
;
841 /* Structures to keep track of prefixes to try when looking for files. */
845 char *prefix
; /* String to prepend to the path. */
846 struct prefix_list
*next
; /* Next in linked list. */
847 int require_machine_suffix
; /* Don't use without machine_suffix. */
848 /* 2 means try both machine_suffix and just_machine_suffix. */
849 int *used_flag_ptr
; /* 1 if a file was found with this prefix. */
854 struct prefix_list
*plist
; /* List of prefixes to try */
855 int max_len
; /* Max length of a prefix in PLIST */
856 char *name
; /* Name of this list (used in config stuff) */
859 /* List of prefixes to try when looking for executables. */
861 static struct path_prefix exec_prefix
= { 0, 0, "exec" };
863 /* List of prefixes to try when looking for startup (crt0) files. */
865 static struct path_prefix startfile_prefix
= { 0, 0, "startfile" };
867 /* List of prefixes to try when looking for libraries. */
869 static struct path_prefix library_prefix
= { 0, 0, "libraryfile" };
871 /* Suffix to attach to directories searched for commands.
872 This looks like `MACHINE/VERSION/'. */
874 static char *machine_suffix
= 0;
876 /* Suffix to attach to directories searched for commands.
877 This is just `MACHINE/'. */
879 static char *just_machine_suffix
= 0;
881 /* Adjusted value of GCC_EXEC_PREFIX envvar. */
883 static char *gcc_exec_prefix
;
885 /* Default prefixes to attach to command names. */
887 #ifdef CROSS_COMPILE /* Don't use these prefixes for a cross compiler. */
888 #undef MD_EXEC_PREFIX
889 #undef MD_STARTFILE_PREFIX
890 #undef MD_STARTFILE_PREFIX_1
893 #ifndef STANDARD_EXEC_PREFIX
894 #define STANDARD_EXEC_PREFIX "/usr/local/lib/gcc-lib/"
895 #endif /* !defined STANDARD_EXEC_PREFIX */
897 static char *standard_exec_prefix
= STANDARD_EXEC_PREFIX
;
898 static char *standard_exec_prefix_1
= "/usr/lib/gcc/";
899 #ifdef MD_EXEC_PREFIX
900 static char *md_exec_prefix
= MD_EXEC_PREFIX
;
903 #ifndef STANDARD_STARTFILE_PREFIX
904 #define STANDARD_STARTFILE_PREFIX "/usr/local/lib/"
905 #endif /* !defined STANDARD_STARTFILE_PREFIX */
907 #ifdef MD_STARTFILE_PREFIX
908 static char *md_startfile_prefix
= MD_STARTFILE_PREFIX
;
910 #ifdef MD_STARTFILE_PREFIX_1
911 static char *md_startfile_prefix_1
= MD_STARTFILE_PREFIX_1
;
913 static char *standard_startfile_prefix
= STANDARD_STARTFILE_PREFIX
;
914 static char *standard_startfile_prefix_1
= "/lib/";
915 static char *standard_startfile_prefix_2
= "/usr/lib/";
917 /* Clear out the vector of arguments (after a command is executed). */
925 /* Add one argument to the vector at the end.
926 This is done when a space is seen or at the end of the line.
927 If DELETE_ALWAYS is nonzero, the arg is a filename
928 and the file should be deleted eventually.
929 If DELETE_FAILURE is nonzero, the arg is a filename
930 and the file should be deleted if this compilation fails. */
933 store_arg (arg
, delete_always
, delete_failure
)
935 int delete_always
, delete_failure
;
937 if (argbuf_index
+ 1 == argbuf_length
)
939 argbuf
= (char **) xrealloc (argbuf
, (argbuf_length
*= 2) * sizeof (char *));
942 argbuf
[argbuf_index
++] = arg
;
943 argbuf
[argbuf_index
] = 0;
945 if (delete_always
|| delete_failure
)
946 record_temp_file (arg
, delete_always
, delete_failure
);
949 /* Record the names of temporary files we tell compilers to write,
950 and delete them at the end of the run. */
952 /* This is the common prefix we use to make temp file names.
953 It is chosen once for each run of this program.
954 It is substituted into a spec by %g.
955 Thus, all temp file names contain this prefix.
956 In practice, all temp file names start with this prefix.
958 This prefix comes from the envvar TMPDIR if it is defined;
959 otherwise, from the P_tmpdir macro if that is defined;
960 otherwise, in /usr/tmp or /tmp. */
962 static char *temp_filename
;
964 /* Length of the prefix. */
966 static int temp_filename_length
;
968 /* Define the list of temporary files to delete. */
973 struct temp_file
*next
;
976 /* Queue of files to delete on success or failure of compilation. */
977 static struct temp_file
*always_delete_queue
;
978 /* Queue of files to delete on failure of compilation. */
979 static struct temp_file
*failure_delete_queue
;
981 /* Record FILENAME as a file to be deleted automatically.
982 ALWAYS_DELETE nonzero means delete it if all compilation succeeds;
983 otherwise delete it in any case.
984 FAIL_DELETE nonzero means delete it if a compilation step fails;
985 otherwise delete it in any case. */
988 record_temp_file (filename
, always_delete
, fail_delete
)
994 name
= xmalloc (strlen (filename
) + 1);
995 strcpy (name
, filename
);
999 register struct temp_file
*temp
;
1000 for (temp
= always_delete_queue
; temp
; temp
= temp
->next
)
1001 if (! strcmp (name
, temp
->name
))
1003 temp
= (struct temp_file
*) xmalloc (sizeof (struct temp_file
));
1004 temp
->next
= always_delete_queue
;
1006 always_delete_queue
= temp
;
1012 register struct temp_file
*temp
;
1013 for (temp
= failure_delete_queue
; temp
; temp
= temp
->next
)
1014 if (! strcmp (name
, temp
->name
))
1016 temp
= (struct temp_file
*) xmalloc (sizeof (struct temp_file
));
1017 temp
->next
= failure_delete_queue
;
1019 failure_delete_queue
= temp
;
1024 /* Delete all the temporary files whose names we previously recorded. */
1027 delete_temp_files ()
1029 register struct temp_file
*temp
;
1031 for (temp
= always_delete_queue
; temp
; temp
= temp
->next
)
1035 printf ("Delete %s? (y or n) ", temp
->name
);
1039 while (getchar () != '\n') ;
1040 if (i
== 'y' || i
== 'Y')
1044 if (stat (temp
->name
, &st
) >= 0)
1046 /* Delete only ordinary files. */
1047 if (S_ISREG (st
.st_mode
))
1048 if (unlink (temp
->name
) < 0)
1050 perror_with_name (temp
->name
);
1055 always_delete_queue
= 0;
1058 /* Delete all the files to be deleted on error. */
1061 delete_failure_queue ()
1063 register struct temp_file
*temp
;
1065 for (temp
= failure_delete_queue
; temp
; temp
= temp
->next
)
1069 printf ("Delete %s? (y or n) ", temp
->name
);
1073 while (getchar () != '\n') ;
1074 if (i
== 'y' || i
== 'Y')
1077 if (unlink (temp
->name
) < 0)
1079 perror_with_name (temp
->name
);
1085 clear_failure_queue ()
1087 failure_delete_queue
= 0;
1090 /* Compute a string to use as the base of all temporary file names.
1091 It is substituted for %g. */
1096 char *base
= getenv ("TMPDIR");
1099 if (base
== (char *)0)
1102 if (access (P_tmpdir
, R_OK
| W_OK
) == 0)
1105 if (base
== (char *)0)
1107 if (access ("/usr/tmp", R_OK
| W_OK
) == 0)
1114 len
= strlen (base
);
1115 temp_filename
= xmalloc (len
+ sizeof("/ccXXXXXX"));
1116 strcpy (temp_filename
, base
);
1117 if (len
> 0 && temp_filename
[len
-1] != '/')
1118 temp_filename
[len
++] = '/';
1119 strcpy (temp_filename
+ len
, "ccXXXXXX");
1121 mktemp (temp_filename
);
1122 temp_filename_length
= strlen (temp_filename
);
1126 /* Routine to add variables to the environment. We do this to pass
1127 the pathname of the gcc driver, and the directories search to the
1128 collect2 program, which is being run as ld. This way, we can be
1129 sure of executing the right compiler when collect2 wants to build
1130 constructors and destructors. Since the environment variables we
1131 use come from an obstack, we don't have to worry about allocating
1139 #ifndef VMS /* nor about VMS */
1141 extern char **environ
;
1142 char **old_environ
= environ
;
1146 int str_len
= strlen (str
);
1150 while ((ch
= *p
++) != '\0' && ch
!= '=')
1156 /* Search for replacing an existing environment variable, and
1157 count the number of total environment variables. */
1158 for (envp
= old_environ
; *envp
; envp
++)
1161 if (!strncmp (str
, *envp
, name_len
))
1168 /* Add a new environment variable */
1169 environ
= (char **) xmalloc (sizeof (char *) * (num_envs
+2));
1171 bcopy (old_environ
, environ
+1, sizeof (char *) * (num_envs
+1));
1176 #endif /* HAVE_PUTENV */
1179 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables for collect. */
1182 putenv_from_prefixes (paths
, env_var
)
1183 struct path_prefix
*paths
;
1186 int suffix_len
= (machine_suffix
) ? strlen (machine_suffix
) : 0;
1187 int first_time
= TRUE
;
1188 struct prefix_list
*pprefix
;
1190 obstack_grow (&collect_obstack
, env_var
, strlen (env_var
));
1192 for (pprefix
= paths
->plist
; pprefix
!= 0; pprefix
= pprefix
->next
)
1194 int len
= strlen (pprefix
->prefix
);
1199 obstack_grow (&collect_obstack
, ":", 1);
1202 obstack_grow (&collect_obstack
, pprefix
->prefix
, len
);
1203 obstack_grow (&collect_obstack
, machine_suffix
, suffix_len
);
1206 if (just_machine_suffix
&& pprefix
->require_machine_suffix
== 2)
1209 obstack_grow (&collect_obstack
, ":", 1);
1212 obstack_grow (&collect_obstack
, pprefix
->prefix
, len
);
1213 obstack_grow (&collect_obstack
, machine_suffix
, suffix_len
);
1216 if (!pprefix
->require_machine_suffix
)
1219 obstack_grow (&collect_obstack
, ":", 1);
1222 obstack_grow (&collect_obstack
, pprefix
->prefix
, len
);
1225 obstack_grow (&collect_obstack
, "\0", 1);
1226 putenv (obstack_finish (&collect_obstack
));
1230 /* Search for NAME using the prefix list PREFIXES. MODE is passed to
1231 access to check permissions.
1232 Return 0 if not found, otherwise return its name, allocated with malloc. */
1235 find_a_file (pprefix
, name
, mode
)
1236 struct path_prefix
*pprefix
;
1241 char *file_suffix
= ((mode
& X_OK
) != 0 ? EXECUTABLE_SUFFIX
: "");
1242 struct prefix_list
*pl
;
1243 int len
= pprefix
->max_len
+ strlen (name
) + strlen (file_suffix
) + 1;
1246 len
+= strlen (machine_suffix
);
1248 temp
= xmalloc (len
);
1250 /* Determine the filename to execute (special case for absolute paths). */
1254 if (access (name
, mode
))
1256 strcpy (temp
, name
);
1261 for (pl
= pprefix
->plist
; pl
; pl
= pl
->next
)
1265 strcpy (temp
, pl
->prefix
);
1266 strcat (temp
, machine_suffix
);
1267 strcat (temp
, name
);
1268 if (access (temp
, mode
) == 0)
1270 if (pl
->used_flag_ptr
!= 0)
1271 *pl
->used_flag_ptr
= 1;
1274 /* Some systems have a suffix for executable files.
1275 So try appending that. */
1276 if (file_suffix
[0] != 0)
1278 strcat (temp
, file_suffix
);
1279 if (access (temp
, mode
) == 0)
1281 if (pl
->used_flag_ptr
!= 0)
1282 *pl
->used_flag_ptr
= 1;
1287 /* Certain prefixes are tried with just the machine type,
1288 not the version. This is used for finding as, ld, etc. */
1289 if (just_machine_suffix
&& pl
->require_machine_suffix
== 2)
1291 strcpy (temp
, pl
->prefix
);
1292 strcat (temp
, just_machine_suffix
);
1293 strcat (temp
, name
);
1294 if (access (temp
, mode
) == 0)
1296 if (pl
->used_flag_ptr
!= 0)
1297 *pl
->used_flag_ptr
= 1;
1300 /* Some systems have a suffix for executable files.
1301 So try appending that. */
1302 if (file_suffix
[0] != 0)
1304 strcat (temp
, file_suffix
);
1305 if (access (temp
, mode
) == 0)
1307 if (pl
->used_flag_ptr
!= 0)
1308 *pl
->used_flag_ptr
= 1;
1313 /* Certain prefixes can't be used without the machine suffix
1314 when the machine or version is explicitly specified. */
1315 if (!pl
->require_machine_suffix
)
1317 strcpy (temp
, pl
->prefix
);
1318 strcat (temp
, name
);
1319 if (access (temp
, mode
) == 0)
1321 if (pl
->used_flag_ptr
!= 0)
1322 *pl
->used_flag_ptr
= 1;
1325 /* Some systems have a suffix for executable files.
1326 So try appending that. */
1327 if (file_suffix
[0] != 0)
1329 strcat (temp
, file_suffix
);
1330 if (access (temp
, mode
) == 0)
1332 if (pl
->used_flag_ptr
!= 0)
1333 *pl
->used_flag_ptr
= 1;
1344 /* Add an entry for PREFIX in PLIST. If FIRST is set, it goes
1345 at the start of the list, otherwise it goes at the end.
1347 If WARN is nonzero, we will warn if no file is found
1348 through this prefix. WARN should point to an int
1349 which will be set to 1 if this entry is used.
1351 REQUIRE_MACHINE_SUFFIX is 1 if this prefix can't be used without
1352 the complete value of machine_suffix.
1353 2 means try both machine_suffix and just_machine_suffix. */
1356 add_prefix (pprefix
, prefix
, first
, require_machine_suffix
, warn
)
1357 struct path_prefix
*pprefix
;
1360 int require_machine_suffix
;
1363 struct prefix_list
*pl
, **prev
;
1366 if (!first
&& pprefix
->plist
)
1368 for (pl
= pprefix
->plist
; pl
->next
; pl
= pl
->next
)
1373 prev
= &pprefix
->plist
;
1375 /* Keep track of the longest prefix */
1377 len
= strlen (prefix
);
1378 if (len
> pprefix
->max_len
)
1379 pprefix
->max_len
= len
;
1381 pl
= (struct prefix_list
*) xmalloc (sizeof (struct prefix_list
));
1382 pl
->prefix
= save_string (prefix
, len
);
1383 pl
->require_machine_suffix
= require_machine_suffix
;
1384 pl
->used_flag_ptr
= warn
;
1391 pl
->next
= (struct prefix_list
*) 0;
1395 /* Print warnings for any prefixes in the list PPREFIX that were not used. */
1398 unused_prefix_warnings (pprefix
)
1399 struct path_prefix
*pprefix
;
1401 struct prefix_list
*pl
= pprefix
->plist
;
1405 if (pl
->used_flag_ptr
!= 0 && !*pl
->used_flag_ptr
)
1407 error ("file path prefix `%s' never used",
1409 /* Prevent duplicate warnings. */
1410 *pl
->used_flag_ptr
= 1;
1416 /* Get rid of all prefixes built up so far in *PLISTP. */
1419 free_path_prefix (pprefix
)
1420 struct path_prefix
*pprefix
;
1422 struct prefix_list
*pl
= pprefix
->plist
;
1423 struct prefix_list
*temp
;
1429 free (temp
->prefix
);
1430 free ((char *) temp
);
1432 pprefix
->plist
= (struct prefix_list
*) 0;
1435 /* stdin file number. */
1436 #define STDIN_FILE_NO 0
1438 /* stdout file number. */
1439 #define STDOUT_FILE_NO 1
1441 /* value of `pipe': port index for reading. */
1444 /* value of `pipe': port index for writing. */
1445 #define WRITE_PORT 1
1447 /* Pipe waiting from last process, to be used as input for the next one.
1448 Value is STDIN_FILE_NO if no pipe is waiting
1449 (i.e. the next command is the first of a group). */
1451 static int last_pipe_input
;
1453 /* Fork one piped subcommand. FUNC is the system call to use
1454 (either execv or execvp). ARGV is the arg vector to use.
1455 NOT_LAST is nonzero if this is not the last subcommand
1456 (i.e. its output should be piped to the next one.) */
1461 /* Declare these to avoid compilation error. They won't be called. */
1462 int execv(const char *a
, const char **b
){}
1463 int execvp(const char *a
, const char **b
){}
1466 pexecute (search_flag
, program
, argv
, not_last
)
1476 scmd
= (char *)malloc (strlen (program
) + strlen (temp_filename
) + 6);
1477 sprintf (scmd
, "%s @%s.gp", program
, temp_filename
);
1478 argfile
= fopen (scmd
+strlen (program
) + 2, "w");
1480 pfatal_with_name (scmd
+ strlen (program
) + 2);
1482 for (i
=1; argv
[i
]; i
++)
1485 for (cp
= argv
[i
]; *cp
; cp
++)
1487 if (*cp
== '"' || *cp
== '\'' || *cp
== '\\' || isspace (*cp
))
1488 fputc ('\\', argfile
);
1489 fputc (*cp
, argfile
);
1491 fputc ('\n', argfile
);
1497 remove (scmd
+ strlen (program
) + 2);
1501 #else /* not __MSDOS__ */
1504 pexecute (search_flag
, program
, argv
, not_last
)
1510 int (*func
)() = (search_flag
? execv
: execvp
);
1513 int input_desc
= last_pipe_input
;
1514 int output_desc
= STDOUT_FILE_NO
;
1515 int retries
, sleep_interval
;
1517 /* If this isn't the last process, make a pipe for its output,
1518 and record it as waiting to be the input to the next process. */
1522 if (pipe (pdes
) < 0)
1523 pfatal_with_name ("pipe");
1524 output_desc
= pdes
[WRITE_PORT
];
1525 last_pipe_input
= pdes
[READ_PORT
];
1528 last_pipe_input
= STDIN_FILE_NO
;
1530 /* Fork a subprocess; wait and retry if it fails. */
1532 for (retries
= 0; retries
< 4; retries
++)
1537 sleep (sleep_interval
);
1538 sleep_interval
*= 2;
1545 pfatal_with_name ("fork");
1547 pfatal_with_name ("vfork");
1553 /* Move the input and output pipes into place, if nec. */
1554 if (input_desc
!= STDIN_FILE_NO
)
1556 close (STDIN_FILE_NO
);
1560 if (output_desc
!= STDOUT_FILE_NO
)
1562 close (STDOUT_FILE_NO
);
1564 close (output_desc
);
1567 /* Close the parent's descs that aren't wanted here. */
1568 if (last_pipe_input
!= STDIN_FILE_NO
)
1569 close (last_pipe_input
);
1571 /* Exec the program. */
1572 (*func
) (program
, argv
);
1573 perror_exec (program
);
1579 /* In the parent, after forking.
1580 Close the descriptors that we made for this child. */
1581 if (input_desc
!= STDIN_FILE_NO
)
1583 if (output_desc
!= STDOUT_FILE_NO
)
1584 close (output_desc
);
1586 /* Return child's process number. */
1591 #endif /* not __MSDOS__ */
1595 pexecute (search_flag
, program
, argv
, not_last
)
1601 return (search_flag
? spawnv
: spawnvp
) (1, program
, argv
);
1603 #endif /* not OS2 */
1605 /* Execute the command specified by the arguments on the current line of spec.
1606 When using pipes, this includes several piped-together commands
1607 with `|' between them.
1609 Return 0 if successful, -1 if failed. */
1615 int n_commands
; /* # of command. */
1619 char *prog
; /* program name. */
1620 char **argv
; /* vector of args. */
1621 int pid
; /* pid of process for this command. */
1624 struct command
*commands
; /* each command buffer with above info. */
1626 /* Count # of piped commands. */
1627 for (n_commands
= 1, i
= 0; i
< argbuf_index
; i
++)
1628 if (strcmp (argbuf
[i
], "|") == 0)
1631 /* Get storage for each command. */
1633 = (struct command
*) alloca (n_commands
* sizeof (struct command
));
1635 /* Split argbuf into its separate piped processes,
1636 and record info about each one.
1637 Also search for the programs that are to be run. */
1639 commands
[0].prog
= argbuf
[0]; /* first command. */
1640 commands
[0].argv
= &argbuf
[0];
1641 string
= find_a_file (&exec_prefix
, commands
[0].prog
, X_OK
);
1643 commands
[0].argv
[0] = string
;
1645 for (n_commands
= 1, i
= 0; i
< argbuf_index
; i
++)
1646 if (strcmp (argbuf
[i
], "|") == 0)
1647 { /* each command. */
1649 fatal ("-pipe not supported under MS-DOS");
1651 argbuf
[i
] = 0; /* termination of command args. */
1652 commands
[n_commands
].prog
= argbuf
[i
+ 1];
1653 commands
[n_commands
].argv
= &argbuf
[i
+ 1];
1654 string
= find_a_file (&exec_prefix
, commands
[n_commands
].prog
, X_OK
);
1656 commands
[n_commands
].argv
[0] = string
;
1660 argbuf
[argbuf_index
] = 0;
1662 /* If -v, print what we are about to do, and maybe query. */
1666 /* Print each piped command as a separate line. */
1667 for (i
= 0; i
< n_commands
; i
++)
1671 for (j
= commands
[i
].argv
; *j
; j
++)
1672 fprintf (stderr
, " %s", *j
);
1674 /* Print a pipe symbol after all but the last command. */
1675 if (i
+ 1 != n_commands
)
1676 fprintf (stderr
, " |");
1677 fprintf (stderr
, "\n");
1681 fprintf (stderr
, "\nGo ahead? (y or n) ");
1685 while (getchar () != '\n') ;
1686 if (i
!= 'y' && i
!= 'Y')
1691 /* Run each piped subprocess. */
1693 last_pipe_input
= STDIN_FILE_NO
;
1694 for (i
= 0; i
< n_commands
; i
++)
1696 char *string
= commands
[i
].argv
[0];
1698 commands
[i
].pid
= pexecute (string
!= commands
[i
].prog
,
1699 string
, commands
[i
].argv
,
1700 i
+ 1 < n_commands
);
1702 if (string
!= commands
[i
].prog
)
1708 /* Wait for all the subprocesses to finish.
1709 We don't care what order they finish in;
1710 we know that N_COMMANDS waits will get them all. */
1715 for (i
= 0; i
< n_commands
; i
++)
1722 status
= pid
= commands
[i
].pid
;
1724 pid
= wait (&status
);
1732 for (j
= 0; j
< n_commands
; j
++)
1733 if (commands
[j
].pid
== pid
)
1734 prog
= commands
[j
].prog
;
1736 if ((status
& 0x7F) != 0)
1738 fatal ("Internal compiler error: program %s got fatal signal %d",
1739 prog
, (status
& 0x7F));
1742 if (((status
& 0xFF00) >> 8) >= MIN_FATAL_STATUS
)
1750 /* Find all the switches given to us
1751 and make a vector describing them.
1752 The elements of the vector are strings, one per switch given.
1753 If a switch uses following arguments, then the `part1' field
1754 is the switch itself and the `args' field
1755 is a null-terminated vector containing the following arguments.
1756 The `valid' field is nonzero if any spec has looked at this switch;
1757 if it remains zero at the end of the run, it must be meaningless. */
1766 static struct switchstr
*switches
;
1768 static int n_switches
;
1776 /* Also a vector of input files specified. */
1778 static struct infile
*infiles
;
1780 static int n_infiles
;
1782 /* And a vector of corresponding output files is made up later. */
1784 static char **outfiles
;
1786 /* Create the vector `switches' and its contents.
1787 Store its length in `n_switches'. */
1790 process_command (argc
, argv
)
1796 char *spec_lang
= 0;
1797 int last_language_n_infiles
;
1799 gcc_exec_prefix
= getenv ("GCC_EXEC_PREFIX");
1803 spec_version
= version_string
;
1805 /* Set up the default search paths. */
1807 if (gcc_exec_prefix
)
1809 add_prefix (&exec_prefix
, gcc_exec_prefix
, 0, 0, NULL_PTR
);
1810 add_prefix (&startfile_prefix
, gcc_exec_prefix
, 0, 0, NULL_PTR
);
1813 /* COMPILER_PATH and LIBRARY_PATH have values
1814 that are lists of directory names with colons. */
1816 temp
= getenv ("COMPILER_PATH");
1819 char *startp
, *endp
;
1820 char *nstore
= (char *) alloca (strlen (temp
) + 3);
1822 startp
= endp
= temp
;
1825 if (*endp
== PATH_SEPARATOR
|| *endp
== 0)
1827 strncpy (nstore
, startp
, endp
-startp
);
1830 strcpy (nstore
, "./");
1832 else if (endp
[-1] != '/')
1834 nstore
[endp
-startp
] = '/';
1835 nstore
[endp
-startp
+1] = 0;
1838 nstore
[endp
-startp
] = 0;
1839 add_prefix (&exec_prefix
, nstore
, 0, 0, NULL_PTR
);
1842 endp
= startp
= endp
+ 1;
1849 temp
= getenv ("LIBRARY_PATH");
1852 char *startp
, *endp
;
1853 char *nstore
= (char *) alloca (strlen (temp
) + 3);
1855 startp
= endp
= temp
;
1858 if (*endp
== PATH_SEPARATOR
|| *endp
== 0)
1860 strncpy (nstore
, startp
, endp
-startp
);
1863 strcpy (nstore
, "./");
1865 else if (endp
[-1] != '/')
1867 nstore
[endp
-startp
] = '/';
1868 nstore
[endp
-startp
+1] = 0;
1871 nstore
[endp
-startp
] = 0;
1872 add_prefix (&startfile_prefix
, nstore
, 0, 0, NULL_PTR
);
1873 /* Make separate list of dirs that came from LIBRARY_PATH. */
1874 add_prefix (&library_prefix
, nstore
, 0, 0, NULL_PTR
);
1877 endp
= startp
= endp
+ 1;
1884 /* Use LPATH like LIBRARY_PATH (for the CMU build program). */
1885 temp
= getenv ("LPATH");
1888 char *startp
, *endp
;
1889 char *nstore
= (char *) alloca (strlen (temp
) + 3);
1891 startp
= endp
= temp
;
1894 if (*endp
== PATH_SEPARATOR
|| *endp
== 0)
1896 strncpy (nstore
, startp
, endp
-startp
);
1899 strcpy (nstore
, "./");
1901 else if (endp
[-1] != '/')
1903 nstore
[endp
-startp
] = '/';
1904 nstore
[endp
-startp
+1] = 0;
1907 nstore
[endp
-startp
] = 0;
1908 add_prefix (&startfile_prefix
, nstore
, 0, 0, NULL_PTR
);
1909 /* Make separate list of dirs that came from LIBRARY_PATH. */
1910 add_prefix (&library_prefix
, nstore
, 0, 0, NULL_PTR
);
1913 endp
= startp
= endp
+ 1;
1920 /* Scan argv twice. Here, the first time, just count how many switches
1921 there will be in their vector, and how many input files in theirs.
1922 Here we also parse the switches that cc itself uses (e.g. -v). */
1924 for (i
= 1; i
< argc
; i
++)
1926 if (! strcmp (argv
[i
], "-dumpspecs"))
1928 printf ("*asm:\n%s\n\n", asm_spec
);
1929 printf ("*asm_final:\n%s\n\n", asm_final_spec
);
1930 printf ("*cpp:\n%s\n\n", cpp_spec
);
1931 printf ("*cc1:\n%s\n\n", cc1_spec
);
1932 printf ("*cc1plus:\n%s\n\n", cc1plus_spec
);
1933 printf ("*endfile:\n%s\n\n", endfile_spec
);
1934 printf ("*link:\n%s\n\n", link_spec
);
1935 printf ("*lib:\n%s\n\n", lib_spec
);
1936 printf ("*startfile:\n%s\n\n", startfile_spec
);
1937 printf ("*switches_need_spaces:\n%s\n\n", switches_need_spaces
);
1938 printf ("*signed_char:\n%s\n\n", signed_char_spec
);
1939 printf ("*predefines:\n%s\n\n", cpp_predefines
);
1940 printf ("*cross_compile:\n%d\n\n", cross_compile
);
1944 else if (! strcmp (argv
[i
], "-dumpversion"))
1946 printf ("%s\n", version_string
);
1949 else if (! strcmp (argv
[i
], "-print-libgcc-file-name"))
1951 print_libgcc_file_name
= 1;
1953 else if (! strcmp (argv
[i
], "-Xlinker"))
1955 /* Pass the argument of this option to the linker when we link. */
1958 fatal ("argument to `-Xlinker' is missing");
1961 if (!linker_options
)
1963 = (char **) xmalloc (n_linker_options
* sizeof (char **));
1966 = (char **) xrealloc (linker_options
,
1967 n_linker_options
* sizeof (char **));
1969 linker_options
[n_linker_options
- 1] = argv
[++i
];
1971 else if (! strncmp (argv
[i
], "-Wl,", 4))
1974 /* Pass the rest of this option to the linker when we link. */
1977 if (!linker_options
)
1979 = (char **) xmalloc (n_linker_options
* sizeof (char **));
1982 = (char **) xrealloc (linker_options
,
1983 n_linker_options
* sizeof (char **));
1985 /* Split the argument at commas. */
1987 for (j
= 4; argv
[i
][j
]; j
++)
1988 if (argv
[i
][j
] == ',')
1990 linker_options
[n_linker_options
- 1]
1991 = save_string (argv
[i
] + prev
, j
- prev
);
1994 = (char **) xrealloc (linker_options
,
1995 n_linker_options
* sizeof (char **));
1998 /* Record the part after the last comma. */
1999 linker_options
[n_linker_options
- 1] = argv
[i
] + prev
;
2001 else if (! strncmp (argv
[i
], "-Wa,", 4))
2004 /* Pass the rest of this option to the assembler. */
2006 n_assembler_options
++;
2007 if (!assembler_options
)
2009 = (char **) xmalloc (n_assembler_options
* sizeof (char **));
2012 = (char **) xrealloc (assembler_options
,
2013 n_assembler_options
* sizeof (char **));
2015 /* Split the argument at commas. */
2017 for (j
= 4; argv
[i
][j
]; j
++)
2018 if (argv
[i
][j
] == ',')
2020 assembler_options
[n_assembler_options
- 1]
2021 = save_string (argv
[i
] + prev
, j
- prev
);
2022 n_assembler_options
++;
2024 = (char **) xrealloc (assembler_options
,
2025 n_assembler_options
* sizeof (char **));
2028 /* Record the part after the last comma. */
2029 assembler_options
[n_assembler_options
- 1] = argv
[i
] + prev
;
2031 else if (argv
[i
][0] == '+' && argv
[i
][1] == 'e')
2032 /* Compensate for the +e options to the C++ front-end. */
2034 else if (argv
[i
][0] == '-' && argv
[i
][1] != 0 && argv
[i
][1] != 'l')
2036 register char *p
= &argv
[i
][1];
2037 register int c
= *p
;
2042 if (p
[1] == 0 && i
+ 1 == argc
)
2043 fatal ("argument to `-b' is missing");
2045 spec_machine
= argv
[++i
];
2047 spec_machine
= p
+ 1;
2052 int *temp
= (int *) xmalloc (sizeof (int));
2054 if (p
[1] == 0 && i
+ 1 == argc
)
2055 fatal ("argument to `-B' is missing");
2060 add_prefix (&exec_prefix
, value
, 1, 0, temp
);
2061 add_prefix (&startfile_prefix
, value
, 1, 0, temp
);
2065 case 'v': /* Print our subcommands and print versions. */
2067 /* If they do anything other than exactly `-v', don't set
2068 verbose_flag; rather, continue on to give the error. */
2075 if (p
[1] == 0 && i
+ 1 == argc
)
2076 fatal ("argument to `-V' is missing");
2078 spec_version
= argv
[++i
];
2080 spec_version
= p
+ 1;
2084 if (!strcmp (p
, "save-temps"))
2086 save_temps_flag
= 1;
2093 if (SWITCH_TAKES_ARG (c
) > (p
[1] != 0))
2094 i
+= SWITCH_TAKES_ARG (c
) - (p
[1] != 0);
2095 else if (WORD_SWITCH_TAKES_ARG (p
))
2096 i
+= WORD_SWITCH_TAKES_ARG (p
);
2103 /* Set up the search paths before we go looking for config files. */
2105 /* These come before the md prefixes so that we will find gcc's subcommands
2106 (such as cpp) rather than those of the host system. */
2107 /* Use 2 as fourth arg meaning try just the machine as a suffix,
2108 as well as trying the machine and the version. */
2109 add_prefix (&exec_prefix
, standard_exec_prefix
, 0, 2, NULL_PTR
);
2110 add_prefix (&exec_prefix
, standard_exec_prefix_1
, 0, 2, NULL_PTR
);
2112 add_prefix (&startfile_prefix
, standard_exec_prefix
, 0, 1, NULL_PTR
);
2113 add_prefix (&startfile_prefix
, standard_exec_prefix_1
, 0, 1, NULL_PTR
);
2115 /* More prefixes are enabled in main, after we read the specs file
2116 and determine whether this is cross-compilation or not. */
2119 /* Then create the space for the vectors and scan again. */
2121 switches
= ((struct switchstr
*)
2122 xmalloc ((n_switches
+ 1) * sizeof (struct switchstr
)));
2123 infiles
= (struct infile
*) xmalloc ((n_infiles
+ 1) * sizeof (struct infile
));
2126 last_language_n_infiles
= -1;
2128 /* This, time, copy the text of each switch and store a pointer
2129 to the copy in the vector of switches.
2130 Store all the infiles in their vector. */
2132 for (i
= 1; i
< argc
; i
++)
2134 /* Just skip the switches that were handled by the preceding loop. */
2135 if (!strcmp (argv
[i
], "-Xlinker"))
2137 else if (! strncmp (argv
[i
], "-Wl,", 4))
2139 else if (! strncmp (argv
[i
], "-Wa,", 4))
2141 else if (! strcmp (argv
[i
], "-print-libgcc-file-name"))
2143 else if (argv
[i
][0] == '+' && argv
[i
][1] == 'e')
2145 /* Compensate for the +e options to the C++ front-end;
2146 they're there simply for cfront call-compatability. We do
2147 some magic in default_compilers to pass them down properly.
2148 Note we deliberately start at the `+' here, to avoid passing
2149 -e0 or -e1 down into the linker. */
2150 switches
[n_switches
].part1
= &argv
[i
][0];
2151 switches
[n_switches
].args
= 0;
2152 switches
[n_switches
].valid
= 0;
2155 else if (argv
[i
][0] == '-' && argv
[i
][1] != 0 && argv
[i
][1] != 'l')
2157 register char *p
= &argv
[i
][1];
2158 register int c
= *p
;
2160 if (c
== 'B' || c
== 'b' || c
== 'V')
2162 /* Skip a separate arg, if any. */
2169 if (p
[1] == 0 && i
+ 1 == argc
)
2170 fatal ("argument to `-x' is missing");
2172 spec_lang
= argv
[++i
];
2175 if (! strcmp (spec_lang
, "none"))
2176 /* Suppress the warning if -xnone comes after the last input file,
2177 because alternate command interfaces like g++ might find it
2178 useful to place -xnone after each input file. */
2181 last_language_n_infiles
= n_infiles
;
2184 switches
[n_switches
].part1
= p
;
2185 /* Deal with option arguments in separate argv elements. */
2186 if ((SWITCH_TAKES_ARG (c
) > (p
[1] != 0))
2187 || WORD_SWITCH_TAKES_ARG (p
)) {
2189 int n_args
= WORD_SWITCH_TAKES_ARG (p
);
2192 /* Count only the option arguments in separate argv elements. */
2193 n_args
= SWITCH_TAKES_ARG (c
) - (p
[1] != 0);
2195 switches
[n_switches
].args
2196 = (char **) xmalloc ((n_args
+ 1) * sizeof (char *));
2198 switches
[n_switches
].args
[j
++] = argv
[++i
];
2199 /* Null-terminate the vector. */
2200 switches
[n_switches
].args
[j
] = 0;
2201 } else if (*switches_need_spaces
!= 0 && (c
== 'o' || c
== 'L')) {
2202 /* On some systems, ld cannot handle -o or -L without space.
2203 So split the -o or -L from its argument. */
2204 switches
[n_switches
].part1
= (c
== 'o' ? "o" : "L");
2205 switches
[n_switches
].args
= (char **) xmalloc (2 * sizeof (char *));
2206 switches
[n_switches
].args
[0] = xmalloc (strlen (p
));
2207 strcpy (switches
[n_switches
].args
[0], &p
[1]);
2208 switches
[n_switches
].args
[1] = 0;
2210 switches
[n_switches
].args
= 0;
2211 switches
[n_switches
].valid
= 0;
2212 /* This is always valid, since gcc.c itself understands it. */
2213 if (!strcmp (p
, "save-temps"))
2214 switches
[n_switches
].valid
= 1;
2219 infiles
[n_infiles
].language
= spec_lang
;
2220 infiles
[n_infiles
++].name
= argv
[i
];
2224 if (n_infiles
== last_language_n_infiles
)
2225 error ("Warning: `-x %s' after last input file has no effect", spec_lang
);
2227 switches
[n_switches
].part1
= 0;
2228 infiles
[n_infiles
].name
= 0;
2230 /* If we have a GCC_EXEC_PREFIX envvar, modify it for cpp's sake. */
2231 if (gcc_exec_prefix
)
2233 temp
= (char *) xmalloc (strlen (gcc_exec_prefix
) + strlen (spec_version
)
2234 + strlen (spec_machine
) + 3);
2235 strcpy (temp
, gcc_exec_prefix
);
2236 strcat (temp
, spec_machine
);
2238 strcat (temp
, spec_version
);
2240 gcc_exec_prefix
= temp
;
2244 /* Process a spec string, accumulating and running commands. */
2246 /* These variables describe the input file name.
2247 input_file_number is the index on outfiles of this file,
2248 so that the output file name can be stored for later use by %o.
2249 input_basename is the start of the part of the input file
2250 sans all directory names, and basename_length is the number
2251 of characters starting there excluding the suffix .c or whatever. */
2253 static char *input_filename
;
2254 static int input_file_number
;
2255 static int input_filename_length
;
2256 static int basename_length
;
2257 static char *input_basename
;
2258 static char *input_suffix
;
2260 /* These are variables used within do_spec and do_spec_1. */
2262 /* Nonzero if an arg has been started and not yet terminated
2263 (with space, tab or newline). */
2264 static int arg_going
;
2266 /* Nonzero means %d or %g has been seen; the next arg to be terminated
2267 is a temporary file name. */
2268 static int delete_this_arg
;
2270 /* Nonzero means %w has been seen; the next arg to be terminated
2271 is the output file name of this compilation. */
2272 static int this_is_output_file
;
2274 /* Nonzero means %s has been seen; the next arg to be terminated
2275 is the name of a library file and we should try the standard
2276 search dirs for it. */
2277 static int this_is_library_file
;
2279 /* Process the spec SPEC and run the commands specified therein.
2280 Returns 0 if the spec is successfully processed; -1 if failed. */
2290 delete_this_arg
= 0;
2291 this_is_output_file
= 0;
2292 this_is_library_file
= 0;
2294 value
= do_spec_1 (spec
, 0, NULL_PTR
);
2296 /* Force out any unfinished command.
2297 If -pipe, this forces out the last command if it ended in `|'. */
2300 if (argbuf_index
> 0 && !strcmp (argbuf
[argbuf_index
- 1], "|"))
2303 if (argbuf_index
> 0)
2310 /* Process the sub-spec SPEC as a portion of a larger spec.
2311 This is like processing a whole spec except that we do
2312 not initialize at the beginning and we do not supply a
2313 newline by default at the end.
2314 INSWITCH nonzero means don't process %-sequences in SPEC;
2315 in this case, % is treated as an ordinary character.
2316 This is used while substituting switches.
2317 INSWITCH nonzero also causes SPC not to terminate an argument.
2319 Value is zero unless a line was finished
2320 and the command on that line reported an error. */
2323 do_spec_1 (spec
, inswitch
, soft_matched_part
)
2326 char *soft_matched_part
;
2328 register char *p
= spec
;
2334 /* If substituting a switch, treat all chars like letters.
2335 Otherwise, NL, SPC, TAB and % are special. */
2336 switch (inswitch
? 'a' : c
)
2339 /* End of line: finish any pending argument,
2340 then run the pending command if one has been started. */
2343 obstack_1grow (&obstack
, 0);
2344 string
= obstack_finish (&obstack
);
2345 if (this_is_library_file
)
2346 string
= find_file (string
);
2347 store_arg (string
, delete_this_arg
, this_is_output_file
);
2348 if (this_is_output_file
)
2349 outfiles
[input_file_number
] = string
;
2353 if (argbuf_index
> 0 && !strcmp (argbuf
[argbuf_index
- 1], "|"))
2356 for (i
= 0; i
< n_switches
; i
++)
2357 if (!strcmp (switches
[i
].part1
, "pipe"))
2360 /* A `|' before the newline means use a pipe here,
2361 but only if -pipe was specified.
2362 Otherwise, execute now and don't pass the `|' as an arg. */
2365 switches
[i
].valid
= 1;
2372 if (argbuf_index
> 0)
2374 int value
= execute ();
2378 /* Reinitialize for a new command, and for a new argument. */
2381 delete_this_arg
= 0;
2382 this_is_output_file
= 0;
2383 this_is_library_file
= 0;
2387 /* End any pending argument. */
2390 obstack_1grow (&obstack
, 0);
2391 string
= obstack_finish (&obstack
);
2392 if (this_is_library_file
)
2393 string
= find_file (string
);
2394 store_arg (string
, delete_this_arg
, this_is_output_file
);
2395 if (this_is_output_file
)
2396 outfiles
[input_file_number
] = string
;
2400 obstack_1grow (&obstack
, c
);
2406 /* Space or tab ends an argument if one is pending. */
2409 obstack_1grow (&obstack
, 0);
2410 string
= obstack_finish (&obstack
);
2411 if (this_is_library_file
)
2412 string
= find_file (string
);
2413 store_arg (string
, delete_this_arg
, this_is_output_file
);
2414 if (this_is_output_file
)
2415 outfiles
[input_file_number
] = string
;
2417 /* Reinitialize for a new argument. */
2419 delete_this_arg
= 0;
2420 this_is_output_file
= 0;
2421 this_is_library_file
= 0;
2428 fatal ("Invalid specification! Bug in cc.");
2431 obstack_grow (&obstack
, input_basename
, basename_length
);
2436 delete_this_arg
= 2;
2439 /* Dump out the directories specified with LIBRARY_PATH,
2440 followed by the absolute directories
2441 that we search for startfiles. */
2443 for (i
= 0; i
< 2; i
++)
2445 struct prefix_list
*pl
2446 = (i
== 0 ? library_prefix
.plist
: startfile_prefix
.plist
);
2448 char *buffer
= (char *) xmalloc (bufsize
);
2451 for (; pl
; pl
= pl
->next
)
2453 #ifdef RELATIVE_PREFIX_NOT_LINKDIR
2454 /* Used on systems which record the specified -L dirs
2455 and use them to search for dynamic linking. */
2456 /* Relative directories always come from -B,
2457 and it is better not to use them for searching
2458 at run time. In particular, stage1 loses */
2459 if (pl
->prefix
[0] != '/')
2464 if (is_linker_dir (pl
->prefix
, machine_suffix
))
2466 do_spec_1 ("-L", 0, NULL_PTR
);
2467 #ifdef SPACE_AFTER_L_OPTION
2468 do_spec_1 (" ", 0, NULL_PTR
);
2470 do_spec_1 (pl
->prefix
, 1, NULL_PTR
);
2471 /* Remove slash from machine_suffix. */
2472 if (strlen (machine_suffix
) >= bufsize
)
2473 bufsize
= strlen (machine_suffix
) * 2 + 1;
2474 buffer
= (char *) xrealloc (buffer
, bufsize
);
2475 strcpy (buffer
, machine_suffix
);
2476 idx
= strlen (buffer
);
2477 if (buffer
[idx
- 1] == '/')
2478 buffer
[idx
- 1] = 0;
2479 do_spec_1 (buffer
, 1, NULL_PTR
);
2480 /* Make this a separate argument. */
2481 do_spec_1 (" ", 0, NULL_PTR
);
2484 if (!pl
->require_machine_suffix
)
2486 if (is_linker_dir (pl
->prefix
, ""))
2488 do_spec_1 ("-L", 0, NULL_PTR
);
2489 #ifdef SPACE_AFTER_L_OPTION
2490 do_spec_1 (" ", 0, NULL_PTR
);
2492 /* Remove slash from pl->prefix. */
2493 if (strlen (pl
->prefix
) >= bufsize
)
2494 bufsize
= strlen (pl
->prefix
) * 2 + 1;
2495 buffer
= (char *) xrealloc (buffer
, bufsize
);
2496 strcpy (buffer
, pl
->prefix
);
2497 idx
= strlen (buffer
);
2498 if (buffer
[idx
- 1] == '/')
2499 buffer
[idx
- 1] = 0;
2500 do_spec_1 (buffer
, 1, NULL_PTR
);
2501 /* Make this a separate argument. */
2502 do_spec_1 (" ", 0, NULL_PTR
);
2511 /* {...:%efoo} means report an error with `foo' as error message
2512 and don't execute any more commands for this file. */
2516 while (*p
!= 0 && *p
!= '\n') p
++;
2517 buf
= (char *) alloca (p
- q
+ 1);
2518 strncpy (buf
, q
, p
- q
);
2528 if (save_temps_flag
)
2529 obstack_grow (&obstack
, input_basename
, basename_length
);
2532 obstack_grow (&obstack
, temp_filename
, temp_filename_length
);
2533 if (c
== 'u' || c
== 'U')
2539 sprintf (buff
, "%d", unique
);
2540 obstack_grow (&obstack
, buff
, strlen (buff
));
2542 delete_this_arg
= 1;
2548 obstack_grow (&obstack
, input_filename
, input_filename_length
);
2553 if (gcc_exec_prefix
)
2555 do_spec_1 ("-iprefix", 1, NULL_PTR
);
2556 /* Make this a separate argument. */
2557 do_spec_1 (" ", 0, NULL_PTR
);
2558 do_spec_1 (gcc_exec_prefix
, 1, NULL_PTR
);
2559 do_spec_1 (" ", 0, NULL_PTR
);
2566 for (f
= 0; f
< n_infiles
; f
++)
2567 store_arg (outfiles
[f
], 0, 0);
2572 this_is_library_file
= 1;
2576 this_is_output_file
= 1;
2581 int index
= argbuf_index
;
2582 /* Handle the {...} following the %W. */
2585 p
= handle_braces (p
+ 1);
2588 /* If any args were output, mark the last one for deletion
2590 if (argbuf_index
!= index
)
2591 record_temp_file (argbuf
[argbuf_index
- 1], 0, 1);
2595 /* %x{OPTION} records OPTION for %X to output. */
2601 /* Skip past the option value and make a copy. */
2606 string
= save_string (p1
+ 1, p
- p1
- 2);
2608 /* See if we already recorded this option. */
2609 for (i
= 0; i
< n_linker_options
; i
++)
2610 if (! strcmp (string
, linker_options
[i
]))
2616 /* This option is new; add it. */
2618 if (!linker_options
)
2620 = (char **) xmalloc (n_linker_options
* sizeof (char **));
2623 = (char **) xrealloc (linker_options
,
2624 n_linker_options
* sizeof (char **));
2626 linker_options
[n_linker_options
- 1] = string
;
2630 /* Dump out the options accumulated previously using %x,
2631 -Xlinker and -Wl,. */
2633 for (i
= 0; i
< n_linker_options
; i
++)
2635 do_spec_1 (linker_options
[i
], 1, NULL_PTR
);
2636 /* Make each accumulated option a separate argument. */
2637 do_spec_1 (" ", 0, NULL_PTR
);
2641 /* Dump out the options accumulated previously using -Wa,. */
2643 for (i
= 0; i
< n_assembler_options
; i
++)
2645 do_spec_1 (assembler_options
[i
], 1, NULL_PTR
);
2646 /* Make each accumulated option a separate argument. */
2647 do_spec_1 (" ", 0, NULL_PTR
);
2651 /* Here are digits and numbers that just process
2652 a certain constant string as a spec.
2653 /* Here are digits and numbers that just process
2654 a certain constant string as a spec. */
2657 do_spec_1 (cc1_spec
, 0, NULL_PTR
);
2661 do_spec_1 (cc1plus_spec
, 0, NULL_PTR
);
2665 do_spec_1 (asm_spec
, 0, NULL_PTR
);
2669 do_spec_1 (asm_final_spec
, 0, NULL_PTR
);
2673 do_spec_1 (signed_char_spec
, 0, NULL_PTR
);
2677 do_spec_1 (cpp_spec
, 0, NULL_PTR
);
2681 do_spec_1 (endfile_spec
, 0, NULL_PTR
);
2685 do_spec_1 (link_spec
, 0, NULL_PTR
);
2689 do_spec_1 (lib_spec
, 0, NULL_PTR
);
2694 char *x
= (char *) alloca (strlen (cpp_predefines
) + 1);
2698 /* Copy all of the -D options in CPP_PREDEFINES into BUF. */
2702 if (! strncmp (y
, "-D", 2))
2703 /* Copy the whole option. */
2704 while (*y
&& *y
!= ' ' && *y
!= '\t')
2706 else if (*y
== ' ' || *y
== '\t')
2707 /* Copy whitespace to the result. */
2709 /* Don't copy other options. */
2716 do_spec_1 (buf
, 0, NULL_PTR
);
2722 char *x
= (char *) alloca (strlen (cpp_predefines
) * 4 + 1);
2726 /* Copy all of CPP_PREDEFINES into BUF,
2727 but put __ after every -D and at the end of each arg. */
2731 if (! strncmp (y
, "-D", 2))
2738 if (strncmp (y
, "__", 2))
2740 /* Stick __ at front of macro name. */
2743 /* Arrange to stick __ at the end as well. */
2747 /* Copy the macro name. */
2748 while (*y
&& *y
!= '=' && *y
!= ' ' && *y
!= '\t')
2757 /* Copy the value given, if any. */
2758 while (*y
&& *y
!= ' ' && *y
!= '\t')
2761 else if (*y
== ' ' || *y
== '\t')
2762 /* Copy whitespace to the result. */
2764 /* Don't copy -A options */
2770 /* Copy all of CPP_PREDEFINES into BUF,
2771 but put __ after every -D. */
2775 if (! strncmp (y
, "-D", 2))
2780 if (strncmp (y
, "__", 2))
2782 /* Stick __ at front of macro name. */
2787 /* Copy the macro name. */
2788 while (*y
&& *y
!= '=' && *y
!= ' ' && *y
!= '\t')
2791 /* Copy the value given, if any. */
2792 while (*y
&& *y
!= ' ' && *y
!= '\t')
2795 else if (*y
== ' ' || *y
== '\t')
2796 /* Copy whitespace to the result. */
2798 /* Don't copy -A options */
2804 /* Copy all of the -A options in CPP_PREDEFINES into BUF. */
2808 if (! strncmp (y
, "-A", 2))
2809 /* Copy the whole option. */
2810 while (*y
&& *y
!= ' ' && *y
!= '\t')
2812 else if (*y
== ' ' || *y
== '\t')
2813 /* Copy whitespace to the result. */
2815 /* Don't copy other options. */
2822 do_spec_1 (buf
, 0, NULL_PTR
);
2827 do_spec_1 (startfile_spec
, 0, NULL_PTR
);
2830 /* Here we define characters other than letters and digits. */
2833 p
= handle_braces (p
);
2839 obstack_1grow (&obstack
, '%');
2843 do_spec_1 (soft_matched_part
, 1, NULL_PTR
);
2844 do_spec_1 (" ", 0, NULL_PTR
);
2847 /* Process a string found as the value of a spec given by name.
2848 This feature allows individual machine descriptions
2849 to add and use their own specs.
2850 %[...] modifies -D options the way %P does;
2851 %(...) uses the spec unmodified. */
2856 struct spec_list
*sl
;
2859 /* The string after the S/P is the name of a spec that is to be
2861 while (*p
&& *p
!= ')' && *p
!= ']')
2864 /* See if it's in the list */
2865 for (len
= p
- name
, sl
= specs
; sl
; sl
= sl
->next
)
2866 if (strncmp (sl
->name
, name
, len
) == 0 && !sl
->name
[len
])
2875 do_spec_1 (name
, 0, NULL_PTR
);
2878 char *x
= (char *) alloca (strlen (name
) * 2 + 1);
2882 /* Copy all of NAME into BUF, but put __ after
2883 every -D and at the end of each arg, */
2886 if (! strncmp (y
, "-D", 2))
2894 else if (*y
== ' ' || *y
== 0)
2908 do_spec_1 (buf
, 0, NULL_PTR
);
2912 /* Discard the closing paren or bracket. */
2924 /* Backslash: treat next character as ordinary. */
2929 /* Ordinary character: put it into the current argument. */
2930 obstack_1grow (&obstack
, c
);
2934 return 0; /* End of string */
2937 /* Return 0 if we call do_spec_1 and that returns -1. */
2950 /* A `|' after the open-brace means,
2951 if the test fails, output a single minus sign rather than nothing.
2952 This is used in %{|!pipe:...}. */
2956 /* A `!' after the open-brace negates the condition:
2957 succeed if the specified switch is not present. */
2961 /* A `.' after the open-brace means test against the current suffix. */
2971 while (*p
!= ':' && *p
!= '}') p
++;
2974 register int count
= 1;
2992 int found
= (input_suffix
!= 0
2993 && strlen (input_suffix
) == p
- filter
2994 && strncmp (input_suffix
, filter
, p
- filter
) == 0);
3000 && do_spec_1 (save_string (p
+ 1, q
- p
- 2), 0, NULL_PTR
) < 0)
3005 else if (p
[-1] == '*' && p
[0] == '}')
3007 /* Substitute all matching switches as separate args. */
3010 for (i
= 0; i
< n_switches
; i
++)
3011 if (!strncmp (switches
[i
].part1
, filter
, p
- filter
))
3016 /* Test for presence of the specified switch. */
3020 /* If name specified ends in *, as in {x*:...},
3021 check for %* and handle that case. */
3022 if (p
[-1] == '*' && !negate
)
3027 /* First see whether we have %*. */
3031 if (*r
== '%' && r
[1] == '*')
3035 /* If we do, handle that case. */
3038 /* Substitute all matching switches as separate args.
3039 But do this by substituting for %*
3040 in the text that follows the colon. */
3042 unsigned hard_match_len
= p
- filter
- 1;
3043 char *string
= save_string (p
+ 1, q
- p
- 2);
3045 for (i
= 0; i
< n_switches
; i
++)
3046 if (!strncmp (switches
[i
].part1
, filter
, hard_match_len
))
3048 do_spec_1 (string
, 0, &switches
[i
].part1
[hard_match_len
]);
3049 /* Pass any arguments this switch has. */
3057 /* If name specified ends in *, as in {x*:...},
3058 check for presence of any switch name starting with x. */
3061 for (i
= 0; i
< n_switches
; i
++)
3063 unsigned hard_match_len
= p
- filter
- 1;
3065 if (!strncmp (switches
[i
].part1
, filter
, hard_match_len
))
3067 switches
[i
].valid
= 1;
3072 /* Otherwise, check for presence of exact name specified. */
3075 for (i
= 0; i
< n_switches
; i
++)
3077 if (!strncmp (switches
[i
].part1
, filter
, p
- filter
)
3078 && switches
[i
].part1
[p
- filter
] == 0)
3080 switches
[i
].valid
= 1;
3087 /* If it is as desired (present for %{s...}, absent for %{-s...})
3088 then substitute either the switch or the specified
3089 conditional text. */
3090 if (present
!= negate
)
3098 if (do_spec_1 (save_string (p
+ 1, q
- p
- 2), 0, NULL_PTR
) < 0)
3104 /* Here if a %{|...} conditional fails: output a minus sign,
3105 which means "standard output" or "standard input". */
3106 do_spec_1 ("-", 0, NULL_PTR
);
3113 /* Pass a switch to the current accumulating command
3114 in the same form that we received it.
3115 SWITCHNUM identifies the switch; it is an index into
3116 the vector of switches gcc received, which is `switches'.
3117 This cannot fail since it never finishes a command line.
3119 If OMIT_FIRST_WORD is nonzero, then we omit .part1 of the argument. */
3122 give_switch (switchnum
, omit_first_word
)
3124 int omit_first_word
;
3126 if (!omit_first_word
)
3128 do_spec_1 ("-", 0, NULL_PTR
);
3129 do_spec_1 (switches
[switchnum
].part1
, 1, NULL_PTR
);
3131 do_spec_1 (" ", 0, NULL_PTR
);
3132 if (switches
[switchnum
].args
!= 0)
3135 for (p
= switches
[switchnum
].args
; *p
; p
++)
3137 do_spec_1 (*p
, 1, NULL_PTR
);
3138 do_spec_1 (" ", 0, NULL_PTR
);
3141 switches
[switchnum
].valid
= 1;
3144 /* Search for a file named NAME trying various prefixes including the
3145 user's -B prefix and some standard ones.
3146 Return the absolute file name found. If nothing is found, return NAME. */
3154 newname
= find_a_file (&startfile_prefix
, name
, R_OK
);
3155 return newname
? newname
: name
;
3158 /* Determine whether a -L option is relevant. Not required for certain
3159 fixed names and for directories that don't exist. */
3162 is_linker_dir (path1
, path2
)
3166 int len1
= strlen (path1
);
3167 int len2
= strlen (path2
);
3168 char *path
= (char *) alloca (3 + len1
+ len2
);
3172 /* Construct the path from the two parts. Ensure the string ends with "/.".
3173 The resulting path will be a directory even if the given path is a
3175 bcopy (path1
, path
, len1
);
3176 bcopy (path2
, path
+ len1
, len2
);
3177 cp
= path
+ len1
+ len2
;
3183 /* Exclude directories that the linker is known to search. */
3184 if ((cp
- path
== 6 && strcmp (path
, "/lib/.") == 0)
3185 || (cp
- path
== 10 && strcmp (path
, "/usr/lib/.") == 0))
3188 return (stat (path
, &st
) >= 0 && S_ISDIR (st
.st_mode
));
3191 /* On fatal signals, delete all the temporary files. */
3194 fatal_error (signum
)
3197 signal (signum
, SIG_DFL
);
3198 delete_failure_queue ();
3199 delete_temp_files ();
3200 /* Get the same signal again, this time not handled,
3201 so its normal effect occurs. */
3202 kill (getpid (), signum
);
3213 int error_count
= 0;
3214 int linker_was_run
= 0;
3215 char *explicit_link_files
;
3218 programname
= argv
[0];
3220 if (signal (SIGINT
, SIG_IGN
) != SIG_IGN
)
3221 signal (SIGINT
, fatal_error
);
3222 if (signal (SIGHUP
, SIG_IGN
) != SIG_IGN
)
3223 signal (SIGHUP
, fatal_error
);
3224 if (signal (SIGTERM
, SIG_IGN
) != SIG_IGN
)
3225 signal (SIGTERM
, fatal_error
);
3227 if (signal (SIGPIPE
, SIG_IGN
) != SIG_IGN
)
3228 signal (SIGPIPE
, fatal_error
);
3232 argbuf
= (char **) xmalloc (argbuf_length
* sizeof (char *));
3234 obstack_init (&obstack
);
3236 /* Set up to remember the pathname of gcc and any options
3237 needed for collect. */
3238 obstack_init (&collect_obstack
);
3239 obstack_grow (&collect_obstack
, "COLLECT_GCC=", sizeof ("COLLECT_GCC=")-1);
3240 obstack_grow (&collect_obstack
, programname
, strlen (programname
)+1);
3241 putenv (obstack_finish (&collect_obstack
));
3243 /* Choose directory for temp files. */
3245 choose_temp_base ();
3247 /* Make a table of what switches there are (switches, n_switches).
3248 Make a table of specified input files (infiles, n_infiles).
3249 Decode switches that are handled locally. */
3251 process_command (argc
, argv
);
3253 /* Initialize the vector of specs to just the default.
3254 This means one element containing 0s, as a terminator. */
3256 compilers
= (struct compiler
*) xmalloc (sizeof default_compilers
);
3257 bcopy (default_compilers
, compilers
, sizeof default_compilers
);
3258 n_compilers
= n_default_compilers
;
3260 /* Read specs from a file if there is one. */
3262 machine_suffix
= concat (spec_machine
, "/", concat (spec_version
, "/", ""));
3263 just_machine_suffix
= concat (spec_machine
, "/", "");
3265 specs_file
= find_a_file (&startfile_prefix
, "specs", R_OK
);
3266 /* Read the specs file unless it is a default one. */
3267 if (specs_file
!= 0 && strcmp (specs_file
, "specs"))
3268 read_specs (specs_file
);
3270 /* If not cross-compiling, look for startfiles in the standard places. */
3271 /* The fact that these are done here, after reading the specs file,
3272 means that it cannot be found in these directories.
3273 But that's okay. It should never be there anyway. */
3276 #ifdef MD_EXEC_PREFIX
3277 add_prefix (&exec_prefix
, md_exec_prefix
, 0, 0, NULL_PTR
);
3278 add_prefix (&startfile_prefix
, md_exec_prefix
, 0, 0, NULL_PTR
);
3281 #ifdef MD_STARTFILE_PREFIX
3282 add_prefix (&startfile_prefix
, md_startfile_prefix
, 0, 0, NULL_PTR
);
3285 #ifdef MD_STARTFILE_PREFIX_1
3286 add_prefix (&startfile_prefix
, md_startfile_prefix_1
, 0, 0, NULL_PTR
);
3289 add_prefix (&startfile_prefix
, standard_startfile_prefix
, 0, 0,
3291 add_prefix (&startfile_prefix
, standard_startfile_prefix_1
, 0, 0,
3293 add_prefix (&startfile_prefix
, standard_startfile_prefix_2
, 0, 0,
3295 #if 0 /* Can cause surprises, and one can use -B./ instead. */
3296 add_prefix (&startfile_prefix
, "./", 0, 1, NULL_PTR
);
3300 /* Now we have the specs.
3301 Set the `valid' bits for switches that match anything in any spec. */
3303 validate_all_switches ();
3305 /* Warn about any switches that no pass was interested in. */
3307 for (i
= 0; i
< n_switches
; i
++)
3308 if (! switches
[i
].valid
)
3309 error ("unrecognized option `-%s'", switches
[i
].part1
);
3311 if (print_libgcc_file_name
)
3313 printf ("%s\n", find_file ("libgcc.a"));
3317 /* Obey some of the options. */
3321 fprintf (stderr
, "gcc version %s\n", version_string
);
3327 fatal ("No input files specified.");
3329 /* Make a place to record the compiler output file names
3330 that correspond to the input files. */
3332 outfiles
= (char **) xmalloc (n_infiles
* sizeof (char *));
3333 bzero (outfiles
, n_infiles
* sizeof (char *));
3335 /* Record which files were specified explicitly as link input. */
3337 explicit_link_files
= xmalloc (n_infiles
);
3338 bzero (explicit_link_files
, n_infiles
);
3340 for (i
= 0; i
< n_infiles
; i
++)
3342 register struct compiler
*cp
= 0;
3343 int this_file_error
= 0;
3345 /* Tell do_spec what to substitute for %i. */
3347 input_filename
= infiles
[i
].name
;
3348 input_filename_length
= strlen (input_filename
);
3349 input_file_number
= i
;
3351 /* Use the same thing in %o, unless cp->spec says otherwise. */
3353 outfiles
[i
] = input_filename
;
3355 /* Figure out which compiler from the file's suffix. */
3357 cp
= lookup_compiler (infiles
[i
].name
, input_filename_length
,
3358 infiles
[i
].language
);
3362 /* Ok, we found an applicable compiler. Run its spec. */
3363 /* First say how much of input_filename to substitute for %b */
3367 input_basename
= input_filename
;
3368 for (p
= input_filename
; *p
; p
++)
3370 input_basename
= p
+ 1;
3372 /* Find a suffix starting with the last period,
3373 and set basename_length to exclude that suffix. */
3374 basename_length
= strlen (input_basename
);
3375 p
= input_basename
+ basename_length
;
3376 while (p
!= input_basename
&& *p
!= '.') --p
;
3377 if (*p
== '.' && p
!= input_basename
)
3379 basename_length
= p
- input_basename
;
3380 input_suffix
= p
+ 1;
3386 for (j
= 0; j
< sizeof cp
->spec
/ sizeof cp
->spec
[0]; j
++)
3388 len
+= strlen (cp
->spec
[j
]);
3390 p
= (char *) xmalloc (len
+ 1);
3393 for (j
= 0; j
< sizeof cp
->spec
/ sizeof cp
->spec
[0]; j
++)
3396 strcpy (p
+ len
, cp
->spec
[j
]);
3397 len
+= strlen (cp
->spec
[j
]);
3400 value
= do_spec (p
);
3403 this_file_error
= 1;
3406 /* If this file's name does not contain a recognized suffix,
3407 record it as explicit linker input. */
3410 explicit_link_files
[i
] = 1;
3412 /* Clear the delete-on-failure queue, deleting the files in it
3413 if this compilation failed. */
3415 if (this_file_error
)
3417 delete_failure_queue ();
3420 /* If this compilation succeeded, don't delete those files later. */
3421 clear_failure_queue ();
3424 /* Run ld to link all the compiler output files. */
3426 if (error_count
== 0)
3428 int tmp
= execution_count
;
3432 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
3434 putenv_from_prefixes (&exec_prefix
, "COMPILER_PATH=");
3435 putenv_from_prefixes (&startfile_prefix
, "LIBRARY_PATH=");
3437 /* Build COLLECT_GCC_OPTIONS to have all of the options specified to
3439 obstack_grow (&collect_obstack
, "COLLECT_GCC_OPTIONS=",
3440 sizeof ("COLLECT_GCC_OPTIONS=")-1);
3443 for (i
= 0; i
< n_switches
; i
++)
3447 obstack_grow (&collect_obstack
, " ", 1);
3450 obstack_grow (&collect_obstack
, "-", 1);
3451 obstack_grow (&collect_obstack
, switches
[i
].part1
,
3452 strlen (switches
[i
].part1
));
3454 for (args
= switches
[i
].args
; args
&& *args
; args
++)
3456 obstack_grow (&collect_obstack
, " ", 1);
3457 obstack_grow (&collect_obstack
, *args
, strlen (*args
));
3460 obstack_grow (&collect_obstack
, "\0", 1);
3461 putenv (obstack_finish (&collect_obstack
));
3463 value
= do_spec (link_command_spec
);
3466 linker_was_run
= (tmp
!= execution_count
);
3469 /* Warn if a -B option was specified but the prefix was never used. */
3470 unused_prefix_warnings (&exec_prefix
);
3471 unused_prefix_warnings (&startfile_prefix
);
3473 /* If options said don't run linker,
3474 complain about input files to be given to the linker. */
3476 if (! linker_was_run
&& error_count
== 0)
3477 for (i
= 0; i
< n_infiles
; i
++)
3478 if (explicit_link_files
[i
])
3479 error ("%s: linker input file unused since linking not done",
3482 /* Delete some or all of the temporary files we made. */
3485 delete_failure_queue ();
3486 delete_temp_files ();
3488 exit (error_count
> 0 ? (signal_count
? 2 : 1) : 0);
3493 /* Find the proper compilation spec for the file name NAME,
3494 whose length is LENGTH. LANGUAGE is the specified language,
3495 or 0 if none specified. */
3497 static struct compiler
*
3498 lookup_compiler (name
, length
, language
)
3503 struct compiler
*cp
;
3505 /* Look for the language, if one is spec'd. */
3508 for (cp
= compilers
+ n_compilers
- 1; cp
>= compilers
; cp
--)
3512 if (cp
->suffix
[0] == '@'
3513 && !strcmp (cp
->suffix
+ 1, language
))
3517 error ("language %s not recognized", language
);
3520 /* Look for a suffix. */
3521 for (cp
= compilers
+ n_compilers
- 1; cp
>= compilers
; cp
--)
3523 if (strlen (cp
->suffix
) < length
3524 /* See if the suffix matches the end of NAME. */
3525 && !strcmp (cp
->suffix
,
3526 name
+ length
- strlen (cp
->suffix
))
3527 /* The suffix `-' matches only the file name `-'. */
3528 && !(!strcmp (cp
->suffix
, "-") && length
!= 1))
3530 if (cp
->spec
[0][0] == '@')
3532 struct compiler
*new;
3533 /* An alias entry maps a suffix to a language.
3534 Search for the language; pass 0 for NAME and LENGTH
3535 to avoid infinite recursion if language not found.
3536 Construct the new compiler spec. */
3537 language
= cp
->spec
[0] + 1;
3538 new = (struct compiler
*) xmalloc (sizeof (struct compiler
));
3539 new->suffix
= cp
->suffix
;
3540 bcopy (lookup_compiler (NULL_PTR
, 0, language
)->spec
,
3541 new->spec
, sizeof new->spec
);
3544 /* A non-alias entry: return it. */
3556 register char *value
= (char *) malloc (size
);
3558 fatal ("virtual memory exhausted");
3563 xrealloc (ptr
, size
)
3567 register char *value
= (char *) realloc (ptr
, size
);
3569 fatal ("virtual memory exhausted");
3573 /* Return a newly-allocated string whose contents concatenate those of s1, s2, s3. */
3579 int len1
= strlen (s1
), len2
= strlen (s2
), len3
= strlen (s3
);
3580 char *result
= xmalloc (len1
+ len2
+ len3
+ 1);
3582 strcpy (result
, s1
);
3583 strcpy (result
+ len1
, s2
);
3584 strcpy (result
+ len1
+ len2
, s3
);
3585 *(result
+ len1
+ len2
+ len3
) = 0;
3591 save_string (s
, len
)
3595 register char *result
= xmalloc (len
+ 1);
3597 bcopy (s
, result
, len
);
3603 pfatal_with_name (name
)
3608 if (errno
< sys_nerr
)
3609 s
= concat ("%s: ", sys_errlist
[errno
], "");
3611 s
= "cannot open %s";
3616 perror_with_name (name
)
3621 if (errno
< sys_nerr
)
3622 s
= concat ("%s: ", sys_errlist
[errno
], "");
3624 s
= "cannot open %s";
3634 if (errno
< sys_nerr
)
3635 s
= concat ("installation problem, cannot exec %s: ",
3636 sys_errlist
[errno
], "");
3638 s
= "installation problem, cannot exec %s";
3642 /* More 'friendly' abort that prints the line and file.
3643 config.h can #define abort fancy_abort if you like that sort of thing. */
3648 fatal ("Internal gcc abort.");
3653 /* Output an error message and exit */
3663 format
= va_arg (ap
, char *);
3664 fprintf (stderr
, "%s: ", programname
);
3665 vfprintf (stderr
, format
, ap
);
3667 fprintf (stderr
, "\n");
3668 delete_temp_files ();
3680 format
= va_arg (ap
, char *);
3681 fprintf (stderr
, "%s: ", programname
);
3682 vfprintf (stderr
, format
, ap
);
3685 fprintf (stderr
, "\n");
3688 #else /* not HAVE_VPRINTF */
3691 fatal (msg
, arg1
, arg2
)
3692 char *msg
, *arg1
, *arg2
;
3694 error (msg
, arg1
, arg2
);
3695 delete_temp_files ();
3700 error (msg
, arg1
, arg2
)
3701 char *msg
, *arg1
, *arg2
;
3703 fprintf (stderr
, "%s: ", programname
);
3704 fprintf (stderr
, msg
, arg1
, arg2
);
3705 fprintf (stderr
, "\n");
3708 #endif /* not HAVE_VPRINTF */
3712 validate_all_switches ()
3714 struct compiler
*comp
;
3717 struct spec_list
*spec
;
3719 for (comp
= compilers
; comp
->spec
[0]; comp
++)
3722 for (i
= 0; i
< sizeof comp
->spec
/ sizeof comp
->spec
[0] && comp
->spec
[i
]; i
++)
3726 if (c
== '%' && *p
== '{')
3727 /* We have a switch spec. */
3728 validate_switches (p
+ 1);
3732 /* look through the linked list of extra specs read from the specs file */
3733 for (spec
= specs
; spec
; spec
= spec
->next
)
3737 if (c
== '%' && *p
== '{')
3738 /* We have a switch spec. */
3739 validate_switches (p
+ 1);
3742 p
= link_command_spec
;
3744 if (c
== '%' && *p
== '{')
3745 /* We have a switch spec. */
3746 validate_switches (p
+ 1);
3748 /* Now notice switches mentioned in the machine-specific specs. */
3752 if (c
== '%' && *p
== '{')
3753 /* We have a switch spec. */
3754 validate_switches (p
+ 1);
3758 if (c
== '%' && *p
== '{')
3759 /* We have a switch spec. */
3760 validate_switches (p
+ 1);
3764 if (c
== '%' && *p
== '{')
3765 /* We have a switch spec. */
3766 validate_switches (p
+ 1);
3768 p
= signed_char_spec
;
3770 if (c
== '%' && *p
== '{')
3771 /* We have a switch spec. */
3772 validate_switches (p
+ 1);
3776 if (c
== '%' && *p
== '{')
3777 /* We have a switch spec. */
3778 validate_switches (p
+ 1);
3782 if (c
== '%' && *p
== '{')
3783 /* We have a switch spec. */
3784 validate_switches (p
+ 1);
3788 if (c
== '%' && *p
== '{')
3789 /* We have a switch spec. */
3790 validate_switches (p
+ 1);
3794 if (c
== '%' && *p
== '{')
3795 /* We have a switch spec. */
3796 validate_switches (p
+ 1);
3800 if (c
== '%' && *p
== '{')
3801 /* We have a switch spec. */
3802 validate_switches (p
+ 1);
3805 /* Look at the switch-name that comes after START
3806 and mark as valid all supplied switches that match it. */
3809 validate_switches (start
)
3812 register char *p
= start
;
3827 while (*p
!= ':' && *p
!= '}') p
++;
3831 else if (p
[-1] == '*')
3833 /* Mark all matching switches as valid. */
3835 for (i
= 0; i
< n_switches
; i
++)
3836 if (!strncmp (switches
[i
].part1
, filter
, p
- filter
))
3837 switches
[i
].valid
= 1;
3841 /* Mark an exact matching switch as valid. */
3842 for (i
= 0; i
< n_switches
; i
++)
3844 if (!strncmp (switches
[i
].part1
, filter
, p
- filter
)
3845 && switches
[i
].part1
[p
- filter
] == 0)
3846 switches
[i
].valid
= 1;