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 /* The number of errors that have occurred; the link phase will not be
148 run if this is non-zero. */
149 static int error_count = 0;
151 /* This is the obstack which we use to allocate many strings. */
153 static struct obstack obstack;
155 /* This is the obstack to build an environment variable to pass to
156 collect2 that describes all of the relevant switches of what to
157 pass the compiler in building the list of pointers to constructors
160 static struct obstack collect_obstack;
162 extern char *version_string;
164 static void set_spec ();
165 static struct compiler *lookup_compiler ();
166 static char *find_a_file ();
167 static void add_prefix ();
168 static char *skip_whitespace ();
169 static void record_temp_file ();
170 static char *handle_braces ();
171 static char *save_string ();
172 static char *concat ();
173 static int do_spec ();
174 static int do_spec_1 ();
175 static char *find_file ();
176 static int is_linker_dir ();
177 static void validate_switches ();
178 static void validate_all_switches ();
179 static void give_switch ();
180 static void pfatal_with_name ();
181 static void perror_with_name ();
182 static void perror_exec ();
183 static void fatal ();
184 static void error ();
189 /* Specs are strings containing lines, each of which (if not blank)
190 is made up of a program name, and arguments separated by spaces.
191 The program name must be exact and start from root, since no path
192 is searched and it is unreliable to depend on the current working directory.
193 Redirection of input or output is not supported; the subprograms must
194 accept filenames saying what files to read and write.
196 In addition, the specs can contain %-sequences to substitute variable text
197 or for conditional text. Here is a table of all defined %-sequences.
198 Note that spaces are not generated automatically around the results of
199 expanding these sequences; therefore, you can concatenate them together
200 or with constant text in a single argument.
202 %% substitute one % into the program name or argument.
203 %i substitute the name of the input file being processed.
204 %b substitute the basename of the input file being processed.
205 This is the substring up to (and not including) the last period
206 and not including the directory.
207 %g substitute the temporary-file-name-base. This is a string chosen
208 once per compilation. Different temporary file names are made by
209 concatenation of constant strings on the end, as in `%g.s'.
210 %g also has the same effect of %d.
211 %u like %g, but make the temporary file name unique.
212 %U returns the last file name generated with %u.
213 %d marks the argument containing or following the %d as a
214 temporary file name, so that that file will be deleted if CC exits
215 successfully. Unlike %g, this contributes no text to the argument.
216 %w marks the argument containing or following the %w as the
217 "output file" of this compilation. This puts the argument
218 into the sequence of arguments that %o will substitute later.
220 like %{...} but mark last argument supplied within
221 as a file to be deleted on failure.
222 %o substitutes the names of all the output files, with spaces
223 automatically placed around them. You should write spaces
224 around the %o as well or the results are undefined.
225 %o is for use in the specs for running the linker.
226 Input files whose names have no recognized suffix are not compiled
227 at all, but they are included among the output files, so they will
229 %p substitutes the standard macro predefinitions for the
230 current target machine. Use this when running cpp.
231 %P like %p, but puts `__' before and after the name of each macro.
232 (Except macros that already have __.)
234 %I Substitute a -iprefix option made from GCC_EXEC_PREFIX.
235 %s current argument is the name of a library or startup file of some sort.
236 Search for that file in a standard list of directories
237 and substitute the full name found.
238 %eSTR Print STR as an error message. STR is terminated by a newline.
239 Use this when inconsistent options are detected.
240 %x{OPTION} Accumulate an option for %X.
241 %X Output the accumulated linker options specified by compilations.
242 %Y Output the accumulated assembler options specified by compilations.
243 %a process ASM_SPEC as a spec.
244 This allows config.h to specify part of the spec for running as.
245 %A process ASM_FINAL_SPEC as a spec. A capital A is actually
246 used here. This can be used to run a post-processor after the
247 assembler has done it's job.
248 %D Dump out a -L option for each directory in library_prefix,
249 followed by a -L option for each directory in startfile_prefix.
250 %l process LINK_SPEC as a spec.
251 %L process LIB_SPEC as a spec.
252 %S process STARTFILE_SPEC as a spec. A capital S is actually used here.
253 %E process ENDFILE_SPEC as a spec. A capital E is actually used here.
254 %c process SIGNED_CHAR_SPEC as a spec.
255 %C process CPP_SPEC as a spec. A capital C is actually used here.
256 %1 process CC1_SPEC as a spec.
257 %2 process CC1PLUS_SPEC as a spec.
258 %| output "-" if the input for the current command is coming from a pipe.
259 %* substitute the variable part of a matched option. (See below.)
260 Note that each comma in the substituted string is replaced by
262 %{S} substitutes the -S switch, if that switch was given to CC.
263 If that switch was not specified, this substitutes nothing.
264 Here S is a metasyntactic variable.
265 %{S*} substitutes all the switches specified to CC whose names start
266 with -S. This is used for -o, -D, -I, etc; switches that take
267 arguments. CC considers `-o foo' as being one switch whose
268 name starts with `o'. %{o*} would substitute this text,
269 including the space; thus, two arguments would be generated.
270 %{S*:X} substitutes X if one or more switches whose names start with -S are
271 specified to CC. Note that the tail part of the -S option
272 (i.e. the part matched by the `*') will be substituted for each
273 occurrence of %* within X.
274 %{S:X} substitutes X, but only if the -S switch was given to CC.
275 %{!S:X} substitutes X, but only if the -S switch was NOT given to CC.
276 %{|S:X} like %{S:X}, but if no S switch, substitute `-'.
277 %{|!S:X} like %{!S:X}, but if there is an S switch, substitute `-'.
278 %{.S:X} substitutes X, but only if processing a file with suffix S.
279 %{!.S:X} substitutes X, but only if NOT processing a file with suffix S.
280 %(Spec) processes a specification defined in a specs file as *Spec:
281 %[Spec] as above, but put __ around -D arguments
283 The conditional text X in a %{S:X} or %{!S:X} construct may contain
284 other nested % constructs or spaces, or even newlines. They are
285 processed as usual, as described above.
287 The character | is used to indicate that a command should be piped to
288 the following command, but only if -pipe is specified.
290 Note that it is built into CC which switches take arguments and which
291 do not. You might think it would be useful to generalize this to
292 allow each compiler's spec to say which switches take arguments. But
293 this cannot be done in a consistent fashion. CC cannot even decide
294 which input files have been specified without knowing which switches
295 take arguments, and it must know which input files to compile in order
296 to tell which compilers to run.
298 CC also knows implicitly that arguments starting in `-l' are to be
299 treated as compiler output files, and passed to the linker in their
300 proper position among the other output files. */
302 /* Define the macros used for specs %a, %l, %L, %S, %c, %C, %1. */
304 /* config.h can define ASM_SPEC to provide extra args to the assembler
305 or extra switch-translations. */
310 /* config.h can define ASM_FINAL_SPEC to run a post processor after
311 the assembler has run. */
312 #ifndef ASM_FINAL_SPEC
313 #define ASM_FINAL_SPEC ""
316 /* config.h can define CPP_SPEC to provide extra args to the C preprocessor
317 or extra switch-translations. */
322 /* config.h can define CC1_SPEC to provide extra args to cc1 and cc1plus
323 or extra switch-translations. */
328 /* config.h can define CC1PLUS_SPEC to provide extra args to cc1plus
329 or extra switch-translations. */
331 #define CC1PLUS_SPEC ""
334 /* config.h can define LINK_SPEC to provide extra args to the linker
335 or extra switch-translations. */
340 /* config.h can define LIB_SPEC to override the default libraries. */
342 #define LIB_SPEC "%{g*:-lg} %{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p}"
345 /* config.h can define STARTFILE_SPEC to override the default crt0 files. */
346 #ifndef STARTFILE_SPEC
347 #define STARTFILE_SPEC \
348 "%{pg:gcrt0.o%s}%{!pg:%{p:mcrt0.o%s}%{!p:crt0.o%s}}"
351 /* config.h can define SWITCHES_NEED_SPACES to control passing -o and -L.
352 Make the string nonempty to require spaces there. */
353 #ifndef SWITCHES_NEED_SPACES
354 #define SWITCHES_NEED_SPACES ""
357 /* config.h can define ENDFILE_SPEC to override the default crtn files. */
359 #define ENDFILE_SPEC ""
362 /* This spec is used for telling cpp whether char is signed or not. */
363 #ifndef SIGNED_CHAR_SPEC
364 /* Use #if rather than ?:
365 because MIPS C compiler rejects like ?: in initializers. */
366 #if DEFAULT_SIGNED_CHAR
367 #define SIGNED_CHAR_SPEC "%{funsigned-char:-D__CHAR_UNSIGNED__}"
369 #define SIGNED_CHAR_SPEC "%{!fsigned-char:-D__CHAR_UNSIGNED__}"
373 static char *cpp_spec = CPP_SPEC;
374 static char *cpp_predefines = CPP_PREDEFINES;
375 static char *cc1_spec = CC1_SPEC;
376 static char *cc1plus_spec = CC1PLUS_SPEC;
377 static char *signed_char_spec = SIGNED_CHAR_SPEC;
378 static char *asm_spec = ASM_SPEC;
379 static char *asm_final_spec = ASM_FINAL_SPEC;
380 static char *link_spec = LINK_SPEC;
381 static char *lib_spec = LIB_SPEC;
382 static char *endfile_spec = ENDFILE_SPEC;
383 static char *startfile_spec = STARTFILE_SPEC;
384 static char *switches_need_spaces = SWITCHES_NEED_SPACES;
386 /* This defines which switch letters take arguments. */
388 #ifndef SWITCH_TAKES_ARG
389 #define SWITCH_TAKES_ARG(CHAR) \
390 ((CHAR) == 'D' || (CHAR) == 'U' || (CHAR) == 'o' \
391 || (CHAR) == 'e' || (CHAR) == 'T' || (CHAR) == 'u' \
392 || (CHAR) == 'I' || (CHAR) == 'm' \
393 || (CHAR) == 'L' || (CHAR) == 'A')
396 /* This defines which multi-letter switches take arguments. */
398 #ifndef WORD_SWITCH_TAKES_ARG
399 #define WORD_SWITCH_TAKES_ARG(STR) \
400 (!strcmp (STR, "Tdata") || !strcmp (STR, "Ttext") \
401 || !strcmp (STR, "Tbss") || !strcmp (STR, "include") \
402 || !strcmp (STR, "imacros") || !strcmp (STR, "aux-info"))
405 /* Record the mapping from file suffixes for compilation specs. */
409 char *suffix; /* Use this compiler for input files
410 whose names end in this suffix. */
412 char *spec[4]; /* To use this compiler, concatenate these
413 specs and pass to do_spec. */
416 /* Pointer to a vector of `struct compiler' that gives the spec for
417 compiling a file, based on its suffix.
418 A file that does not end in any of these suffixes will be passed
419 unchanged to the loader and nothing else will be done to it.
421 An entry containing two 0s is used to terminate the vector.
423 If multiple entries match a file, the last matching one is used. */
425 static struct compiler *compilers;
427 /* Number of entries in `compilers', not counting the null terminator. */
429 static int n_compilers;
431 /* The default list of file name suffixes and their compilation specs. */
433 static struct compiler default_compilers[] =
437 "cpp -lang-c %{nostdinc*} %{C} %{v} %{A*} %{I*} %{P} %I\
438 %{C:%{!E:%eGNU C does not support -C without using -E}}\
439 %{M} %{MM} %{MD:-MD %b.d} %{MMD:-MMD %b.d}\
440 -undef -D__GNUC__=2 %{ansi:-trigraphs -$ -D__STRICT_ANSI__}\
441 %{!undef:%{!ansi:%p} %P} %{trigraphs} \
442 %c %{O*:-D__OPTIMIZE__} %{traditional} %{ftraditional:-traditional}\
443 %{traditional-cpp:-traditional}\
444 %{g*} %{W*} %{w} %{pedantic*} %{H} %{d*} %C %{D*} %{U*} %{i*}\
445 %i %{!M:%{!MM:%{!E:%{!pipe:%g.i}}}}%{E:%W{o*}}%{M:%W{o*}}%{MM:%W{o*}} |\n",
446 "%{!M:%{!MM:%{!E:cc1 %{!pipe:%g.i} %1 \
447 %{!Q:-quiet} -dumpbase %b.c %{d*} %{m*} %{a}\
448 %{g*} %{O*} %{W*} %{w} %{pedantic*} %{ansi} \
449 %{traditional} %{v:-version} %{pg:-p} %{p} %{f*}\
451 %{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\
452 %{S:%W{o*}%{!o*:-o %b.s}}%{!S:-o %{|!pipe:%g.s}} |\n\
453 %{!S:as %{R} %{j} %{J} %{h} %{d2} %a %Y\
454 %{c:%W{o*}%{!o*:-o %w%b.o}}%{!c:-o %d%w%u.o}\
455 %{!pipe:%g.s} %A\n }}}}"},
457 "%{E:cpp -lang-c %{nostdinc*} %{C} %{v} %{A*} %{I*} %{P} %I\
458 %{C:%{!E:%eGNU C does not support -C without using -E}}\
459 %{M} %{MM} %{MD:-MD %b.d} %{MMD:-MMD %b.d}\
460 -undef -D__GNUC__=2 %{ansi:-trigraphs -$ -D__STRICT_ANSI__}\
461 %{!undef:%{!ansi:%p} %P} %{trigraphs}\
462 %c %{O*:-D__OPTIMIZE__} %{traditional} %{ftraditional:-traditional}\
463 %{traditional-cpp:-traditional}\
464 %{g*} %{W*} %{w} %{pedantic*} %{H} %{d*} %C %{D*} %{U*} %{i*}\
466 %{!E:%e-E required when input is from standard input}"},
467 {".m", "@objective-c"},
469 "cpp -lang-objc %{nostdinc*} %{C} %{v} %{A*} %{I*} %{P} %I\
470 %{C:%{!E:%eGNU C does not support -C without using -E}}\
471 %{M} %{MM} %{MD:-MD %b.d} %{MMD:-MMD %b.d}\
472 -undef -D__OBJC__ -D__GNUC__=2 %{ansi:-trigraphs -$ -D__STRICT_ANSI__}\
473 %{!undef:%{!ansi:%p} %P} %{trigraphs}\
474 %c %{O*:-D__OPTIMIZE__} %{traditional} %{ftraditional:-traditional}\
475 %{traditional-cpp:-traditional}\
476 %{g*} %{W*} %{w} %{pedantic*} %{H} %{d*} %C %{D*} %{U*} %{i*}\
477 %i %{!M:%{!MM:%{!E:%{!pipe:%g.i}}}}%{E:%W{o*}}%{M:%W{o*}}%{MM:%W{o*}} |\n",
478 "%{!M:%{!MM:%{!E:cc1obj %{!pipe:%g.i} %1 \
479 %{!Q:-quiet} -dumpbase %b.m %{d*} %{m*} %{a}\
480 %{g*} %{O*} %{W*} %{w} %{pedantic*} %{ansi} \
481 %{traditional} %{v:-version} %{pg:-p} %{p} %{f*} \
482 -lang-objc %{gen-decls} \
484 %{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\
485 %{S:%W{o*}%{!o*:-o %b.s}}%{!S:-o %{|!pipe:%g.s}} |\n\
486 %{!S:as %{R} %{j} %{J} %{h} %{d2} %a %Y\
487 %{c:%W{o*}%{!o*:-o %w%b.o}}%{!c:-o %d%w%u.o}\
488 %{!pipe:%g.s} %A\n }}}}"},
491 "%{!E:%eCompilation of header file requested} \
492 cpp %{nostdinc*} %{C} %{v} %{A*} %{I*} %{P} %I\
493 %{C:%{!E:%eGNU C does not support -C without using -E}}\
494 %{M} %{MM} %{MD:-MD %b.d} %{MMD:-MMD %b.d} \
495 -undef -D__GNUC__=2 %{ansi:-trigraphs -$ -D__STRICT_ANSI__}\
496 %{!undef:%{!ansi:%p} %P} %{trigraphs}\
497 %c %{O*:-D__OPTIMIZE__} %{traditional} %{ftraditional:-traditional}\
498 %{traditional-cpp:-traditional}\
499 %{g*} %{W*} %{w} %{pedantic*} %{H} %{d*} %C %{D*} %{U*} %{i*}\
505 "cpp -lang-c++ %{nostdinc*} %{C} %{v} %{A*} %{I*} %{P} %I\
506 %{C:%{!E:%eGNU C++ does not support -C without using -E}}\
507 %{M} %{MM} %{MD:-MD %b.d} %{MMD:-MMD %b.d} \
508 -undef -D__GNUC__=2 -D__GNUG__=2 -D__cplusplus \
509 %{ansi:-trigraphs -$ -D__STRICT_ANSI__} %{!undef:%{!ansi:%p} %P}\
510 %c %{O*:-D__OPTIMIZE__} %{traditional} %{ftraditional:-traditional}\
511 %{traditional-cpp:-traditional} %{trigraphs}\
512 %{g*} %{W*} %{w} %{pedantic*} %{H} %{d*} %C %{D*} %{U*} %{i*}\
513 %i %{!M:%{!MM:%{!E:%{!pipe:%g.i}}}}%{E:%W{o*}}%{M:%W{o*}}%{MM:%W{o*}} |\n",
514 "%{!M:%{!MM:%{!E:cc1plus %{!pipe:%g.i} %1 %2\
515 %{!Q:-quiet} -dumpbase %b.cc %{d*} %{m*} %{a}\
516 %{g*} %{O*} %{W*} %{w} %{pedantic*} %{ansi} %{traditional}\
517 %{v:-version} %{pg:-p} %{p} %{f*} %{+e*}\
519 %{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\
520 %{S:%W{o*}%{!o*:-o %b.s}}%{!S:-o %{|!pipe:%g.s}} |\n\
521 %{!S:as %{R} %{j} %{J} %{h} %{d2} %a %Y\
522 %{c:%W{o*}%{!o*:-o %w%b.o}}%{!c:-o %d%w%u.o}\
523 %{!pipe:%g.s} %A\n }}}}"},
524 {".i", "@cpp-output"},
526 "cc1 %i %1 %{!Q:-quiet} %{d*} %{m*} %{a}\
527 %{g*} %{O*} %{W*} %{w} %{pedantic*} %{ansi} %{traditional}\
528 %{v:-version} %{pg:-p} %{p} %{f*}\
530 %{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\
531 %{S:%W{o*}%{!o*:-o %b.s}}%{!S:-o %{|!pipe:%g.s}} |\n\
532 %{!S:as %{R} %{j} %{J} %{h} %{d2} %a %Y\
533 %{c:%W{o*}%{!o*:-o %w%b.o}}%{!c:-o %d%w%u.o} %{!pipe:%g.s} %A\n }"},
534 {".ii", "@c++-cpp-output"},
536 "cc1plus %i %1 %2 %{!Q:-quiet} %{d*} %{m*} %{a}\
537 %{g*} %{O*} %{W*} %{w} %{pedantic*} %{ansi} %{traditional}\
538 %{v:-version} %{pg:-p} %{p} %{f*} %{+e*}\
540 %{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\
541 %{S:%W{o*}%{!o*:-o %b.s}}%{!S:-o %{|!pipe:%g.s}} |\n\
542 %{!S:as %{R} %{j} %{J} %{h} %{d2} %a %Y\
543 %{c:%W{o*}%{!o*:-o %w%b.o}}%{!c:-o %d%w%u.o}\
544 %{!pipe:%g.s} %A\n }"},
545 {".s", "@assembler"},
547 "%{!S:as %{R} %{j} %{J} %{h} %{d2} %a %Y\
548 %{c:%W{o*}%{!o*:-o %w%b.o}}%{!c:-o %d%w%u.o} %i %A\n }"},
549 {".S", "@assembler-with-cpp"},
550 {"@assembler-with-cpp",
551 "cpp -lang-asm %{nostdinc*} %{C} %{v} %{A*} %{I*} %{P} %I\
552 %{C:%{!E:%eGNU C does not support -C without using -E}}\
553 %{M} %{MM} %{MD:-MD %b.d} %{MMD:-MMD %b.d} %{trigraphs} \
554 -undef -$ %{!undef:%p %P} -D__ASSEMBLER__ \
555 %c %{O*:-D__OPTIMIZE__} %{traditional} %{ftraditional:-traditional}\
556 %{traditional-cpp:-traditional}\
557 %{g*} %{W*} %{w} %{pedantic*} %{H} %{d*} %C %{D*} %{U*} %{i*}\
558 %i %{!M:%{!MM:%{!E:%{!pipe:%g.s}}}}%{E:%W{o*}}%{M:%W{o*}}%{MM:%W{o*}} |\n",
559 "%{!M:%{!MM:%{!E:%{!S:as %{R} %{j} %{J} %{h} %{d2} %a %Y\
560 %{c:%W{o*}%{!o*:-o %w%b.o}}%{!c:-o %d%w%u.o}\
561 %{!pipe:%g.s} %A\n }}}}"},
562 /* Mark end of table */
566 /* Number of elements in default_compilers, not counting the terminator. */
568 static int n_default_compilers
569 = (sizeof default_compilers / sizeof (struct compiler)) - 1;
571 /* Here is the spec for running the linker, after compiling all files. */
573 /* -u* was put back because both BSD and SysV seem to support it. */
574 /* %{static:} simply prevents an error message if the target machine
575 doesn't handle -static. */
576 #ifdef LINK_LIBGCC_SPECIAL_1
577 /* Have gcc do the search for libgcc.a, but generate -L options as usual. */
578 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:libgcc.a%s %L libgcc.a%s %{!A:%E}}\n }}}}}}";
585 #ifdef LINK_LIBGCC_SPECIAL
586 /* Have gcc do the search for libgcc.a, and don't generate -L options. */
587 static char *link_command_spec = "\
589 %{!c:%{!M:%{!MM:%{!E:%{!S:ld %l %X %{o*} %{A} %{d} %{e*} %{m} %{N} %{n} \
590 %{r} %{s} %{T*} %{t} %{u*} %{x} %{z}\
591 %{!A:%{!nostdlib:%S}} %{static:}\
592 %{L*} %o %{!nostdlib:libgcc.a%s %L libgcc.a%s %{!A:%E}}\n }}}}}}";
594 /* Use -L and have the linker do the search for -lgcc. */
595 static char *link_command_spec = "\
597 %{!c:%{!M:%{!MM:%{!E:%{!S:ld %l %X %{o*} %{A} %{d} %{e*} %{m} %{N} %{n} \
598 %{r} %{s} %{T*} %{t} %{u*} %{x} %{z}\
599 %{!A:%{!nostdlib:%S}} %{static:}\
600 %{L*} %D %o %{!nostdlib:-lgcc %L -lgcc %{!A:%E}}\n }}}}}}";
604 /* A vector of options to give to the linker.
605 These options are accumulated by -Xlinker and -Wl,
606 and substituted into the linker command with %X. */
607 static int n_linker_options;
608 static char **linker_options;
610 /* A vector of options to give to the assembler.
611 These options are accumulated by -Wa,
612 and substituted into the assembler command with %X. */
613 static int n_assembler_options;
614 static char **assembler_options;
616 /* Read compilation specs from a file named FILENAME,
617 replacing the default ones.
619 A suffix which starts with `*' is a definition for
620 one of the machine-specific sub-specs. The "suffix" should be
621 *asm, *cc1, *cpp, *link, *startfile, *signed_char, etc.
622 The corresponding spec is stored in asm_spec, etc.,
623 rather than in the `compilers' vector.
625 Anything invalid in the file is a fatal error. */
628 read_specs (filename)
637 fprintf (stderr, "Reading specs from %s\n", filename);
639 /* Open and stat the file. */
640 desc = open (filename, 0, 0);
642 pfatal_with_name (filename);
643 if (stat (filename, &statbuf) < 0)
644 pfatal_with_name (filename);
646 /* Read contents of file into BUFFER. */
647 buffer = xmalloc ((unsigned) statbuf.st_size + 1);
648 read (desc, buffer, (unsigned) statbuf.st_size);
649 buffer[statbuf.st_size] = 0;
652 /* Scan BUFFER for specs, putting them in the vector. */
658 char *in, *out, *p1, *p2;
660 /* Advance P in BUFFER to the next nonblank nocomment line. */
661 p = skip_whitespace (p);
665 /* Find the colon that should end the suffix. */
667 while (*p1 && *p1 != ':' && *p1 != '\n') p1++;
668 /* The colon shouldn't be missing. */
670 fatal ("specs file malformed after %d characters", p1 - buffer);
671 /* Skip back over trailing whitespace. */
673 while (p2 > buffer && (p2[-1] == ' ' || p2[-1] == '\t')) p2--;
674 /* Copy the suffix to a string. */
675 suffix = save_string (p, p2 - p);
676 /* Find the next line. */
677 p = skip_whitespace (p1 + 1);
679 fatal ("specs file malformed after %d characters", p - buffer);
681 /* Find next blank line. */
682 while (*p1 && !(*p1 == '\n' && p1[1] == '\n')) p1++;
683 /* Specs end at the blank line and do not include the newline. */
684 spec = save_string (p, p1 - p);
687 /* Delete backslash-newline sequences from the spec. */
692 if (in[0] == '\\' && in[1] == '\n')
694 else if (in[0] == '#')
696 while (*in && *in != '\n') in++;
703 if (suffix[0] == '*')
705 if (! strcmp (suffix, "*link_command"))
706 link_command_spec = spec;
708 set_spec (suffix + 1, spec);
712 /* Add this pair to the vector. */
714 = ((struct compiler *)
715 xrealloc (compilers, (n_compilers + 2) * sizeof (struct compiler)));
716 compilers[n_compilers].suffix = suffix;
717 bzero (compilers[n_compilers].spec,
718 sizeof compilers[n_compilers].spec);
719 compilers[n_compilers].spec[0] = spec;
724 link_command_spec = spec;
727 if (link_command_spec == 0)
728 fatal ("spec file has no spec for linking");
737 /* A fully-blank line is a delimiter in the SPEC file and shouldn't
738 be considered whitespace. */
739 if (p[0] == '\n' && p[1] == '\n' && p[2] == '\n')
741 else if (*p == '\n' || *p == ' ' || *p == '\t')
745 while (*p != '\n') p++;
755 /* Structure to keep track of the specs that have been defined so far. These
756 are accessed using %(specname) or %[specname] in a compiler or link spec. */
760 char *name; /* Name of the spec. */
761 char *spec; /* The spec itself. */
762 struct spec_list *next; /* Next spec in linked list. */
765 /* List of specs that have been defined so far. */
767 static struct spec_list *specs = (struct spec_list *) 0;
769 /* Change the value of spec NAME to SPEC. If SPEC is empty, then the spec is
770 removed; If the spec starts with a + then SPEC is added to the end of the
774 set_spec (name, spec)
778 struct spec_list *sl;
781 /* See if the spec already exists */
782 for (sl = specs; sl; sl = sl->next)
783 if (strcmp (sl->name, name) == 0)
788 /* Not found - make it */
789 sl = (struct spec_list *) xmalloc (sizeof (struct spec_list));
790 sl->name = save_string (name, strlen (name));
791 sl->spec = save_string ("", 0);
797 if (name && spec[0] == '+' && isspace (spec[1]))
798 sl->spec = concat (old_spec, spec + 1, "");
800 sl->spec = save_string (spec, strlen (spec));
802 if (! strcmp (name, "asm"))
804 else if (! strcmp (name, "asm_final"))
805 asm_final_spec = sl->spec;
806 else if (! strcmp (name, "cc1"))
808 else if (! strcmp (name, "cc1plus"))
809 cc1plus_spec = sl->spec;
810 else if (! strcmp (name, "cpp"))
812 else if (! strcmp (name, "endfile"))
813 endfile_spec = sl->spec;
814 else if (! strcmp (name, "lib"))
816 else if (! strcmp (name, "link"))
817 link_spec = sl->spec;
818 else if (! strcmp (name, "predefines"))
819 cpp_predefines = sl->spec;
820 else if (! strcmp (name, "signed_char"))
821 signed_char_spec = sl->spec;
822 else if (! strcmp (name, "startfile"))
823 startfile_spec = sl->spec;
824 else if (! strcmp (name, "switches_need_spaces"))
825 switches_need_spaces = sl->spec;
826 else if (! strcmp (name, "cross_compile"))
827 cross_compile = atoi (sl->spec);
828 /* Free the old spec */
833 /* Accumulate a command (program name and args), and run it. */
835 /* Vector of pointers to arguments in the current line of specifications. */
837 static char **argbuf;
839 /* Number of elements allocated in argbuf. */
841 static int argbuf_length;
843 /* Number of elements in argbuf currently in use (containing args). */
845 static int argbuf_index;
847 /* This is the list of suffixes and codes (%g/%u/%U) and the associated
848 temp file. Used only if MKTEMP_EACH_FILE. */
850 static struct temp_name {
851 char *suffix; /* suffix associated with the code. */
852 int length; /* strlen (suffix). */
853 int unique; /* Indicates whether %g or %u/%U was used. */
854 char *filename; /* associated filename. */
855 int filename_length; /* strlen (filename). */
856 struct temp_name *next;
859 /* Number of commands executed so far. */
861 static int execution_count;
863 /* Number of commands that exited with a signal. */
865 static int signal_count;
867 /* Name with which this program was invoked. */
869 static char *programname;
871 /* Structures to keep track of prefixes to try when looking for files. */
875 char *prefix; /* String to prepend to the path. */
876 struct prefix_list *next; /* Next in linked list. */
877 int require_machine_suffix; /* Don't use without machine_suffix. */
878 /* 2 means try both machine_suffix and just_machine_suffix. */
879 int *used_flag_ptr; /* 1 if a file was found with this prefix. */
884 struct prefix_list *plist; /* List of prefixes to try */
885 int max_len; /* Max length of a prefix in PLIST */
886 char *name; /* Name of this list (used in config stuff) */
889 /* List of prefixes to try when looking for executables. */
891 static struct path_prefix exec_prefix = { 0, 0, "exec" };
893 /* List of prefixes to try when looking for startup (crt0) files. */
895 static struct path_prefix startfile_prefix = { 0, 0, "startfile" };
897 /* List of prefixes to try when looking for libraries. */
899 static struct path_prefix library_prefix = { 0, 0, "libraryfile" };
901 /* Suffix to attach to directories searched for commands.
902 This looks like `MACHINE/VERSION/'. */
904 static char *machine_suffix = 0;
906 /* Suffix to attach to directories searched for commands.
907 This is just `MACHINE/'. */
909 static char *just_machine_suffix = 0;
911 /* Adjusted value of GCC_EXEC_PREFIX envvar. */
913 static char *gcc_exec_prefix;
915 /* Default prefixes to attach to command names. */
917 #ifdef CROSS_COMPILE /* Don't use these prefixes for a cross compiler. */
918 #undef MD_EXEC_PREFIX
919 #undef MD_STARTFILE_PREFIX
920 #undef MD_STARTFILE_PREFIX_1
923 #ifndef STANDARD_EXEC_PREFIX
924 #define STANDARD_EXEC_PREFIX "/usr/local/lib/gcc-lib/"
925 #endif /* !defined STANDARD_EXEC_PREFIX */
927 static char *standard_exec_prefix = STANDARD_EXEC_PREFIX;
928 static char *standard_exec_prefix_1 = "/usr/lib/gcc/";
929 #ifdef MD_EXEC_PREFIX
930 static char *md_exec_prefix = MD_EXEC_PREFIX;
933 #ifndef STANDARD_STARTFILE_PREFIX
934 #define STANDARD_STARTFILE_PREFIX "/usr/local/lib/"
935 #endif /* !defined STANDARD_STARTFILE_PREFIX */
937 #ifdef MD_STARTFILE_PREFIX
938 static char *md_startfile_prefix = MD_STARTFILE_PREFIX;
940 #ifdef MD_STARTFILE_PREFIX_1
941 static char *md_startfile_prefix_1 = MD_STARTFILE_PREFIX_1;
943 static char *standard_startfile_prefix = STANDARD_STARTFILE_PREFIX;
944 static char *standard_startfile_prefix_1 = "/lib/";
945 static char *standard_startfile_prefix_2 = "/usr/lib/";
947 #ifndef TOOLDIR_BASE_PREFIX
948 #define TOOLDIR_BASE_PREFIX "/usr/local/"
950 static char *tooldir_base_prefix = TOOLDIR_BASE_PREFIX;
951 static char *tooldir_prefix;
953 /* Clear out the vector of arguments (after a command is executed). */
961 /* Add one argument to the vector at the end.
962 This is done when a space is seen or at the end of the line.
963 If DELETE_ALWAYS is nonzero, the arg is a filename
964 and the file should be deleted eventually.
965 If DELETE_FAILURE is nonzero, the arg is a filename
966 and the file should be deleted if this compilation fails. */
969 store_arg (arg, delete_always, delete_failure)
971 int delete_always, delete_failure;
973 if (argbuf_index + 1 == argbuf_length)
975 argbuf = (char **) xrealloc (argbuf, (argbuf_length *= 2) * sizeof (char *));
978 argbuf[argbuf_index++] = arg;
979 argbuf[argbuf_index] = 0;
981 if (delete_always || delete_failure)
982 record_temp_file (arg, delete_always, delete_failure);
985 /* Record the names of temporary files we tell compilers to write,
986 and delete them at the end of the run. */
988 /* This is the common prefix we use to make temp file names.
989 It is chosen once for each run of this program.
990 It is substituted into a spec by %g.
991 Thus, all temp file names contain this prefix.
992 In practice, all temp file names start with this prefix.
994 This prefix comes from the envvar TMPDIR if it is defined;
995 otherwise, from the P_tmpdir macro if that is defined;
996 otherwise, in /usr/tmp or /tmp. */
998 static char *temp_filename;
1000 /* Length of the prefix. */
1002 static int temp_filename_length;
1004 /* Define the list of temporary files to delete. */
1009 struct temp_file *next;
1012 /* Queue of files to delete on success or failure of compilation. */
1013 static struct temp_file *always_delete_queue;
1014 /* Queue of files to delete on failure of compilation. */
1015 static struct temp_file *failure_delete_queue;
1017 /* Record FILENAME as a file to be deleted automatically.
1018 ALWAYS_DELETE nonzero means delete it if all compilation succeeds;
1019 otherwise delete it in any case.
1020 FAIL_DELETE nonzero means delete it if a compilation step fails;
1021 otherwise delete it in any case. */
1024 record_temp_file (filename, always_delete, fail_delete)
1029 register char *name;
1030 name = xmalloc (strlen (filename) + 1);
1031 strcpy (name, filename);
1035 register struct temp_file *temp;
1036 for (temp = always_delete_queue; temp; temp = temp->next)
1037 if (! strcmp (name, temp->name))
1039 temp = (struct temp_file *) xmalloc (sizeof (struct temp_file));
1040 temp->next = always_delete_queue;
1042 always_delete_queue = temp;
1048 register struct temp_file *temp;
1049 for (temp = failure_delete_queue; temp; temp = temp->next)
1050 if (! strcmp (name, temp->name))
1052 temp = (struct temp_file *) xmalloc (sizeof (struct temp_file));
1053 temp->next = failure_delete_queue;
1055 failure_delete_queue = temp;
1060 /* Delete all the temporary files whose names we previously recorded. */
1063 delete_temp_files ()
1065 register struct temp_file *temp;
1067 for (temp = always_delete_queue; temp; temp = temp->next)
1071 printf ("Delete %s? (y or n) ", temp->name);
1075 while (getchar () != '\n') ;
1076 if (i == 'y' || i == 'Y')
1080 if (stat (temp->name, &st) >= 0)
1082 /* Delete only ordinary files. */
1083 if (S_ISREG (st.st_mode))
1084 if (unlink (temp->name) < 0)
1086 perror_with_name (temp->name);
1091 always_delete_queue = 0;
1094 /* Delete all the files to be deleted on error. */
1097 delete_failure_queue ()
1099 register struct temp_file *temp;
1101 for (temp = failure_delete_queue; temp; temp = temp->next)
1105 printf ("Delete %s? (y or n) ", temp->name);
1109 while (getchar () != '\n') ;
1110 if (i == 'y' || i == 'Y')
1113 if (unlink (temp->name) < 0)
1115 perror_with_name (temp->name);
1121 clear_failure_queue ()
1123 failure_delete_queue = 0;
1126 /* Compute a string to use as the base of all temporary file names.
1127 It is substituted for %g. */
1132 char *base = getenv ("TMPDIR");
1135 if (base == (char *)0)
1138 if (access (P_tmpdir, R_OK | W_OK) == 0)
1141 if (base == (char *)0)
1143 if (access ("/usr/tmp", R_OK | W_OK) == 0)
1150 len = strlen (base);
1151 temp_filename = xmalloc (len + sizeof("/ccXXXXXX"));
1152 strcpy (temp_filename, base);
1153 if (len > 0 && temp_filename[len-1] != '/')
1154 temp_filename[len++] = '/';
1155 strcpy (temp_filename + len, "ccXXXXXX");
1157 mktemp (temp_filename);
1158 temp_filename_length = strlen (temp_filename);
1159 if (temp_filename_length == 0)
1164 /* Routine to add variables to the environment. We do this to pass
1165 the pathname of the gcc driver, and the directories search to the
1166 collect2 program, which is being run as ld. This way, we can be
1167 sure of executing the right compiler when collect2 wants to build
1168 constructors and destructors. Since the environment variables we
1169 use come from an obstack, we don't have to worry about allocating
1177 #ifndef VMS /* nor about VMS */
1179 extern char **environ;
1180 char **old_environ = environ;
1184 int str_len = strlen (str);
1188 while ((ch = *p++) != '\0' && ch != '=')
1194 /* Search for replacing an existing environment variable, and
1195 count the number of total environment variables. */
1196 for (envp = old_environ; *envp; envp++)
1199 if (!strncmp (str, *envp, name_len))
1206 /* Add a new environment variable */
1207 environ = (char **) xmalloc (sizeof (char *) * (num_envs+2));
1209 bcopy (old_environ, environ+1, sizeof (char *) * (num_envs+1));
1214 #endif /* HAVE_PUTENV */
1217 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables for collect. */
1220 putenv_from_prefixes (paths, env_var)
1221 struct path_prefix *paths;
1224 int suffix_len = (machine_suffix) ? strlen (machine_suffix) : 0;
1226 = (just_machine_suffix) ? strlen (just_machine_suffix) : 0;
1227 int first_time = TRUE;
1228 struct prefix_list *pprefix;
1230 obstack_grow (&collect_obstack, env_var, strlen (env_var));
1232 for (pprefix = paths->plist; pprefix != 0; pprefix = pprefix->next)
1234 int len = strlen (pprefix->prefix);
1239 obstack_1grow (&collect_obstack, PATH_SEPARATOR);
1242 obstack_grow (&collect_obstack, pprefix->prefix, len);
1243 obstack_grow (&collect_obstack, machine_suffix, suffix_len);
1246 if (just_machine_suffix && pprefix->require_machine_suffix == 2)
1249 obstack_1grow (&collect_obstack, PATH_SEPARATOR);
1252 obstack_grow (&collect_obstack, pprefix->prefix, len);
1253 obstack_grow (&collect_obstack, just_machine_suffix,
1257 if (!pprefix->require_machine_suffix)
1260 obstack_1grow (&collect_obstack, PATH_SEPARATOR);
1263 obstack_grow (&collect_obstack, pprefix->prefix, len);
1266 obstack_1grow (&collect_obstack, '\0');
1267 putenv (obstack_finish (&collect_obstack));
1271 /* Search for NAME using the prefix list PREFIXES. MODE is passed to
1272 access to check permissions.
1273 Return 0 if not found, otherwise return its name, allocated with malloc. */
1276 find_a_file (pprefix, name, mode)
1277 struct path_prefix *pprefix;
1282 char *file_suffix = ((mode & X_OK) != 0 ? EXECUTABLE_SUFFIX : "");
1283 struct prefix_list *pl;
1284 int len = pprefix->max_len + strlen (name) + strlen (file_suffix) + 1;
1287 len += strlen (machine_suffix);
1289 temp = xmalloc (len);
1291 /* Determine the filename to execute (special case for absolute paths). */
1295 if (access (name, mode))
1297 strcpy (temp, name);
1302 for (pl = pprefix->plist; pl; pl = pl->next)
1306 strcpy (temp, pl->prefix);
1307 strcat (temp, machine_suffix);
1308 strcat (temp, name);
1309 if (access (temp, mode) == 0)
1311 if (pl->used_flag_ptr != 0)
1312 *pl->used_flag_ptr = 1;
1315 /* Some systems have a suffix for executable files.
1316 So try appending that. */
1317 if (file_suffix[0] != 0)
1319 strcat (temp, file_suffix);
1320 if (access (temp, mode) == 0)
1322 if (pl->used_flag_ptr != 0)
1323 *pl->used_flag_ptr = 1;
1328 /* Certain prefixes are tried with just the machine type,
1329 not the version. This is used for finding as, ld, etc. */
1330 if (just_machine_suffix && pl->require_machine_suffix == 2)
1332 strcpy (temp, pl->prefix);
1333 strcat (temp, just_machine_suffix);
1334 strcat (temp, name);
1335 if (access (temp, mode) == 0)
1337 if (pl->used_flag_ptr != 0)
1338 *pl->used_flag_ptr = 1;
1341 /* Some systems have a suffix for executable files.
1342 So try appending that. */
1343 if (file_suffix[0] != 0)
1345 strcat (temp, file_suffix);
1346 if (access (temp, mode) == 0)
1348 if (pl->used_flag_ptr != 0)
1349 *pl->used_flag_ptr = 1;
1354 /* Certain prefixes can't be used without the machine suffix
1355 when the machine or version is explicitly specified. */
1356 if (!pl->require_machine_suffix)
1358 strcpy (temp, pl->prefix);
1359 strcat (temp, name);
1360 if (access (temp, mode) == 0)
1362 if (pl->used_flag_ptr != 0)
1363 *pl->used_flag_ptr = 1;
1366 /* Some systems have a suffix for executable files.
1367 So try appending that. */
1368 if (file_suffix[0] != 0)
1370 strcat (temp, file_suffix);
1371 if (access (temp, mode) == 0)
1373 if (pl->used_flag_ptr != 0)
1374 *pl->used_flag_ptr = 1;
1385 /* Add an entry for PREFIX in PLIST. If FIRST is set, it goes
1386 at the start of the list, otherwise it goes at the end.
1388 If WARN is nonzero, we will warn if no file is found
1389 through this prefix. WARN should point to an int
1390 which will be set to 1 if this entry is used.
1392 REQUIRE_MACHINE_SUFFIX is 1 if this prefix can't be used without
1393 the complete value of machine_suffix.
1394 2 means try both machine_suffix and just_machine_suffix. */
1397 add_prefix (pprefix, prefix, first, require_machine_suffix, warn)
1398 struct path_prefix *pprefix;
1401 int require_machine_suffix;
1404 struct prefix_list *pl, **prev;
1407 if (!first && pprefix->plist)
1409 for (pl = pprefix->plist; pl->next; pl = pl->next)
1414 prev = &pprefix->plist;
1416 /* Keep track of the longest prefix */
1418 len = strlen (prefix);
1419 if (len > pprefix->max_len)
1420 pprefix->max_len = len;
1422 pl = (struct prefix_list *) xmalloc (sizeof (struct prefix_list));
1423 pl->prefix = save_string (prefix, len);
1424 pl->require_machine_suffix = require_machine_suffix;
1425 pl->used_flag_ptr = warn;
1432 pl->next = (struct prefix_list *) 0;
1436 /* Print warnings for any prefixes in the list PPREFIX that were not used. */
1439 unused_prefix_warnings (pprefix)
1440 struct path_prefix *pprefix;
1442 struct prefix_list *pl = pprefix->plist;
1446 if (pl->used_flag_ptr != 0 && !*pl->used_flag_ptr)
1448 error ("file path prefix `%s' never used",
1450 /* Prevent duplicate warnings. */
1451 *pl->used_flag_ptr = 1;
1457 /* Get rid of all prefixes built up so far in *PLISTP. */
1460 free_path_prefix (pprefix)
1461 struct path_prefix *pprefix;
1463 struct prefix_list *pl = pprefix->plist;
1464 struct prefix_list *temp;
1470 free (temp->prefix);
1471 free ((char *) temp);
1473 pprefix->plist = (struct prefix_list *) 0;
1476 /* stdin file number. */
1477 #define STDIN_FILE_NO 0
1479 /* stdout file number. */
1480 #define STDOUT_FILE_NO 1
1482 /* value of `pipe': port index for reading. */
1485 /* value of `pipe': port index for writing. */
1486 #define WRITE_PORT 1
1488 /* Pipe waiting from last process, to be used as input for the next one.
1489 Value is STDIN_FILE_NO if no pipe is waiting
1490 (i.e. the next command is the first of a group). */
1492 static int last_pipe_input;
1494 /* Fork one piped subcommand. FUNC is the system call to use
1495 (either execv or execvp). ARGV is the arg vector to use.
1496 NOT_LAST is nonzero if this is not the last subcommand
1497 (i.e. its output should be piped to the next one.) */
1502 /* Declare these to avoid compilation error. They won't be called. */
1503 int execv(const char *a, const char **b){}
1504 int execvp(const char *a, const char **b){}
1507 pexecute (search_flag, program, argv, not_last)
1517 scmd = (char *)malloc (strlen (program) + strlen (temp_filename) + 6);
1518 sprintf (scmd, "%s @%s.gp", program, temp_filename);
1519 argfile = fopen (scmd+strlen (program) + 2, "w");
1521 pfatal_with_name (scmd + strlen (program) + 2);
1523 for (i=1; argv[i]; i++)
1526 for (cp = argv[i]; *cp; cp++)
1528 if (*cp == '"' || *cp == '\'' || *cp == '\\' || isspace (*cp))
1529 fputc ('\\', argfile);
1530 fputc (*cp, argfile);
1532 fputc ('\n', argfile);
1538 remove (scmd + strlen (program) + 2);
1542 #else /* not __MSDOS__ */
1545 pexecute (search_flag, program, argv, not_last)
1551 int (*func)() = (search_flag ? execv : execvp);
1554 int input_desc = last_pipe_input;
1555 int output_desc = STDOUT_FILE_NO;
1556 int retries, sleep_interval;
1558 /* If this isn't the last process, make a pipe for its output,
1559 and record it as waiting to be the input to the next process. */
1563 if (pipe (pdes) < 0)
1564 pfatal_with_name ("pipe");
1565 output_desc = pdes[WRITE_PORT];
1566 last_pipe_input = pdes[READ_PORT];
1569 last_pipe_input = STDIN_FILE_NO;
1571 /* Fork a subprocess; wait and retry if it fails. */
1573 for (retries = 0; retries < 4; retries++)
1578 sleep (sleep_interval);
1579 sleep_interval *= 2;
1586 pfatal_with_name ("fork");
1588 pfatal_with_name ("vfork");
1594 /* Move the input and output pipes into place, if nec. */
1595 if (input_desc != STDIN_FILE_NO)
1597 close (STDIN_FILE_NO);
1601 if (output_desc != STDOUT_FILE_NO)
1603 close (STDOUT_FILE_NO);
1605 close (output_desc);
1608 /* Close the parent's descs that aren't wanted here. */
1609 if (last_pipe_input != STDIN_FILE_NO)
1610 close (last_pipe_input);
1612 /* Exec the program. */
1613 (*func) (program, argv);
1614 perror_exec (program);
1620 /* In the parent, after forking.
1621 Close the descriptors that we made for this child. */
1622 if (input_desc != STDIN_FILE_NO)
1624 if (output_desc != STDOUT_FILE_NO)
1625 close (output_desc);
1627 /* Return child's process number. */
1632 #endif /* not __MSDOS__ */
1636 pexecute (search_flag, program, argv, not_last)
1642 return (search_flag ? spawnv : spawnvp) (1, program, argv);
1644 #endif /* not OS2 */
1646 /* Execute the command specified by the arguments on the current line of spec.
1647 When using pipes, this includes several piped-together commands
1648 with `|' between them.
1650 Return 0 if successful, -1 if failed. */
1656 int n_commands; /* # of command. */
1660 char *prog; /* program name. */
1661 char **argv; /* vector of args. */
1662 int pid; /* pid of process for this command. */
1665 struct command *commands; /* each command buffer with above info. */
1667 /* Count # of piped commands. */
1668 for (n_commands = 1, i = 0; i < argbuf_index; i++)
1669 if (strcmp (argbuf[i], "|") == 0)
1672 /* Get storage for each command. */
1674 = (struct command *) alloca (n_commands * sizeof (struct command));
1676 /* Split argbuf into its separate piped processes,
1677 and record info about each one.
1678 Also search for the programs that are to be run. */
1680 commands[0].prog = argbuf[0]; /* first command. */
1681 commands[0].argv = &argbuf[0];
1682 string = find_a_file (&exec_prefix, commands[0].prog, X_OK);
1684 commands[0].argv[0] = string;
1686 for (n_commands = 1, i = 0; i < argbuf_index; i++)
1687 if (strcmp (argbuf[i], "|") == 0)
1688 { /* each command. */
1690 fatal ("-pipe not supported under MS-DOS");
1692 argbuf[i] = 0; /* termination of command args. */
1693 commands[n_commands].prog = argbuf[i + 1];
1694 commands[n_commands].argv = &argbuf[i + 1];
1695 string = find_a_file (&exec_prefix, commands[n_commands].prog, X_OK);
1697 commands[n_commands].argv[0] = string;
1701 argbuf[argbuf_index] = 0;
1703 /* If -v, print what we are about to do, and maybe query. */
1707 /* Print each piped command as a separate line. */
1708 for (i = 0; i < n_commands ; i++)
1712 for (j = commands[i].argv; *j; j++)
1713 fprintf (stderr, " %s", *j);
1715 /* Print a pipe symbol after all but the last command. */
1716 if (i + 1 != n_commands)
1717 fprintf (stderr, " |");
1718 fprintf (stderr, "\n");
1722 fprintf (stderr, "\nGo ahead? (y or n) ");
1726 while (getchar () != '\n') ;
1727 if (i != 'y' && i != 'Y')
1732 /* Run each piped subprocess. */
1734 last_pipe_input = STDIN_FILE_NO;
1735 for (i = 0; i < n_commands; i++)
1737 char *string = commands[i].argv[0];
1739 commands[i].pid = pexecute (string != commands[i].prog,
1740 string, commands[i].argv,
1741 i + 1 < n_commands);
1743 if (string != commands[i].prog)
1749 /* Wait for all the subprocesses to finish.
1750 We don't care what order they finish in;
1751 we know that N_COMMANDS waits will get them all. */
1756 for (i = 0; i < n_commands; i++)
1763 status = pid = commands[i].pid;
1765 pid = wait (&status);
1773 for (j = 0; j < n_commands; j++)
1774 if (commands[j].pid == pid)
1775 prog = commands[j].prog;
1777 if ((status & 0x7F) != 0)
1779 fatal ("Internal compiler error: program %s got fatal signal %d",
1780 prog, (status & 0x7F));
1783 if (((status & 0xFF00) >> 8) >= MIN_FATAL_STATUS)
1791 /* Find all the switches given to us
1792 and make a vector describing them.
1793 The elements of the vector are strings, one per switch given.
1794 If a switch uses following arguments, then the `part1' field
1795 is the switch itself and the `args' field
1796 is a null-terminated vector containing the following arguments.
1797 The `valid' field is nonzero if any spec has looked at this switch;
1798 if it remains zero at the end of the run, it must be meaningless. */
1807 static struct switchstr *switches;
1809 static int n_switches;
1817 /* Also a vector of input files specified. */
1819 static struct infile *infiles;
1821 static int n_infiles;
1823 /* And a vector of corresponding output files is made up later. */
1825 static char **outfiles;
1827 /* Create the vector `switches' and its contents.
1828 Store its length in `n_switches'. */
1831 process_command (argc, argv)
1837 char *spec_lang = 0;
1838 int last_language_n_infiles;
1840 gcc_exec_prefix = getenv ("GCC_EXEC_PREFIX");
1845 /* Default for -V is our version number, ending at first space. */
1846 spec_version = save_string (version_string, strlen (version_string));
1847 for (temp = spec_version; *temp && *temp != ' '; temp++);
1848 if (*temp) *temp = '\0';
1850 /* Set up the default search paths. */
1852 if (gcc_exec_prefix)
1854 add_prefix (&exec_prefix, gcc_exec_prefix, 0, 0, NULL_PTR);
1855 add_prefix (&startfile_prefix, gcc_exec_prefix, 0, 0, NULL_PTR);
1858 /* COMPILER_PATH and LIBRARY_PATH have values
1859 that are lists of directory names with colons. */
1861 temp = getenv ("COMPILER_PATH");
1864 char *startp, *endp;
1865 char *nstore = (char *) alloca (strlen (temp) + 3);
1867 startp = endp = temp;
1870 if (*endp == PATH_SEPARATOR || *endp == 0)
1872 strncpy (nstore, startp, endp-startp);
1875 strcpy (nstore, "./");
1877 else if (endp[-1] != '/')
1879 nstore[endp-startp] = '/';
1880 nstore[endp-startp+1] = 0;
1883 nstore[endp-startp] = 0;
1884 add_prefix (&exec_prefix, nstore, 0, 0, NULL_PTR);
1887 endp = startp = endp + 1;
1894 temp = getenv ("LIBRARY_PATH");
1897 char *startp, *endp;
1898 char *nstore = (char *) alloca (strlen (temp) + 3);
1900 startp = endp = temp;
1903 if (*endp == PATH_SEPARATOR || *endp == 0)
1905 strncpy (nstore, startp, endp-startp);
1908 strcpy (nstore, "./");
1910 else if (endp[-1] != '/')
1912 nstore[endp-startp] = '/';
1913 nstore[endp-startp+1] = 0;
1916 nstore[endp-startp] = 0;
1917 add_prefix (&startfile_prefix, nstore, 0, 0, NULL_PTR);
1918 /* Make separate list of dirs that came from LIBRARY_PATH. */
1919 add_prefix (&library_prefix, nstore, 0, 0, NULL_PTR);
1922 endp = startp = endp + 1;
1929 /* Use LPATH like LIBRARY_PATH (for the CMU build program). */
1930 temp = getenv ("LPATH");
1933 char *startp, *endp;
1934 char *nstore = (char *) alloca (strlen (temp) + 3);
1936 startp = endp = temp;
1939 if (*endp == PATH_SEPARATOR || *endp == 0)
1941 strncpy (nstore, startp, endp-startp);
1944 strcpy (nstore, "./");
1946 else if (endp[-1] != '/')
1948 nstore[endp-startp] = '/';
1949 nstore[endp-startp+1] = 0;
1952 nstore[endp-startp] = 0;
1953 add_prefix (&startfile_prefix, nstore, 0, 0, NULL_PTR);
1954 /* Make separate list of dirs that came from LIBRARY_PATH. */
1955 add_prefix (&library_prefix, nstore, 0, 0, NULL_PTR);
1958 endp = startp = endp + 1;
1965 /* Scan argv twice. Here, the first time, just count how many switches
1966 there will be in their vector, and how many input files in theirs.
1967 Here we also parse the switches that cc itself uses (e.g. -v). */
1969 for (i = 1; i < argc; i++)
1971 if (! strcmp (argv[i], "-dumpspecs"))
1973 printf ("*asm:\n%s\n\n", asm_spec);
1974 printf ("*asm_final:\n%s\n\n", asm_final_spec);
1975 printf ("*cpp:\n%s\n\n", cpp_spec);
1976 printf ("*cc1:\n%s\n\n", cc1_spec);
1977 printf ("*cc1plus:\n%s\n\n", cc1plus_spec);
1978 printf ("*endfile:\n%s\n\n", endfile_spec);
1979 printf ("*link:\n%s\n\n", link_spec);
1980 printf ("*lib:\n%s\n\n", lib_spec);
1981 printf ("*startfile:\n%s\n\n", startfile_spec);
1982 printf ("*switches_need_spaces:\n%s\n\n", switches_need_spaces);
1983 printf ("*signed_char:\n%s\n\n", signed_char_spec);
1984 printf ("*predefines:\n%s\n\n", cpp_predefines);
1985 printf ("*cross_compile:\n%d\n\n", cross_compile);
1989 else if (! strcmp (argv[i], "-dumpversion"))
1991 printf ("%s\n", version_string);
1994 else if (! strcmp (argv[i], "-print-libgcc-file-name"))
1996 print_libgcc_file_name = 1;
1998 else if (! strcmp (argv[i], "-Xlinker"))
2000 /* Pass the argument of this option to the linker when we link. */
2003 fatal ("argument to `-Xlinker' is missing");
2006 if (!linker_options)
2008 = (char **) xmalloc (n_linker_options * sizeof (char **));
2011 = (char **) xrealloc (linker_options,
2012 n_linker_options * sizeof (char **));
2014 linker_options[n_linker_options - 1] = argv[++i];
2016 else if (! strncmp (argv[i], "-Wl,", 4))
2019 /* Pass the rest of this option to the linker when we link. */
2022 if (!linker_options)
2024 = (char **) xmalloc (n_linker_options * sizeof (char **));
2027 = (char **) xrealloc (linker_options,
2028 n_linker_options * sizeof (char **));
2030 /* Split the argument at commas. */
2032 for (j = 4; argv[i][j]; j++)
2033 if (argv[i][j] == ',')
2035 linker_options[n_linker_options - 1]
2036 = save_string (argv[i] + prev, j - prev);
2039 = (char **) xrealloc (linker_options,
2040 n_linker_options * sizeof (char **));
2043 /* Record the part after the last comma. */
2044 linker_options[n_linker_options - 1] = argv[i] + prev;
2046 else if (! strncmp (argv[i], "-Wa,", 4))
2049 /* Pass the rest of this option to the assembler. */
2051 n_assembler_options++;
2052 if (!assembler_options)
2054 = (char **) xmalloc (n_assembler_options * sizeof (char **));
2057 = (char **) xrealloc (assembler_options,
2058 n_assembler_options * sizeof (char **));
2060 /* Split the argument at commas. */
2062 for (j = 4; argv[i][j]; j++)
2063 if (argv[i][j] == ',')
2065 assembler_options[n_assembler_options - 1]
2066 = save_string (argv[i] + prev, j - prev);
2067 n_assembler_options++;
2069 = (char **) xrealloc (assembler_options,
2070 n_assembler_options * sizeof (char **));
2073 /* Record the part after the last comma. */
2074 assembler_options[n_assembler_options - 1] = argv[i] + prev;
2076 else if (argv[i][0] == '+' && argv[i][1] == 'e')
2077 /* Compensate for the +e options to the C++ front-end. */
2079 else if (argv[i][0] == '-' && argv[i][1] != 0 && argv[i][1] != 'l')
2081 register char *p = &argv[i][1];
2082 register int c = *p;
2087 if (p[1] == 0 && i + 1 == argc)
2088 fatal ("argument to `-b' is missing");
2090 spec_machine = argv[++i];
2092 spec_machine = p + 1;
2097 int *temp = (int *) xmalloc (sizeof (int));
2099 if (p[1] == 0 && i + 1 == argc)
2100 fatal ("argument to `-B' is missing");
2105 add_prefix (&exec_prefix, value, 1, 0, temp);
2106 add_prefix (&startfile_prefix, value, 1, 0, temp);
2110 case 'v': /* Print our subcommands and print versions. */
2112 /* If they do anything other than exactly `-v', don't set
2113 verbose_flag; rather, continue on to give the error. */
2120 if (p[1] == 0 && i + 1 == argc)
2121 fatal ("argument to `-V' is missing");
2123 spec_version = argv[++i];
2125 spec_version = p + 1;
2129 if (!strcmp (p, "save-temps"))
2131 save_temps_flag = 1;
2138 if (SWITCH_TAKES_ARG (c) > (p[1] != 0))
2139 i += SWITCH_TAKES_ARG (c) - (p[1] != 0);
2140 else if (WORD_SWITCH_TAKES_ARG (p))
2141 i += WORD_SWITCH_TAKES_ARG (p);
2148 tooldir_prefix = concat (tooldir_base_prefix, spec_machine, "/");
2150 /* If tooldir is relative, base it on exec_prefix. A relative
2151 tooldir lets us move the installed tree as a unit. */
2153 if (*tooldir_prefix != '/')
2155 if (gcc_exec_prefix)
2156 tooldir_prefix = concat (concat (gcc_exec_prefix, spec_machine, "/"),
2157 concat (spec_version, "/", tooldir_prefix),
2160 tooldir_prefix = concat (concat (standard_exec_prefix, spec_machine, "/"),
2161 concat (spec_version, "/", tooldir_prefix),
2166 /* Set up the search paths before we go looking for config files. */
2168 /* These come before the md prefixes so that we will find gcc's subcommands
2169 (such as cpp) rather than those of the host system. */
2170 /* Use 2 as fourth arg meaning try just the machine as a suffix,
2171 as well as trying the machine and the version. */
2172 add_prefix (&exec_prefix, standard_exec_prefix, 0, 2, NULL_PTR);
2173 add_prefix (&exec_prefix, standard_exec_prefix_1, 0, 2, NULL_PTR);
2175 add_prefix (&startfile_prefix, standard_exec_prefix, 0, 1, NULL_PTR);
2176 add_prefix (&startfile_prefix, standard_exec_prefix_1, 0, 1, NULL_PTR);
2178 add_prefix (&exec_prefix, concat (tooldir_prefix, "bin", "/"),
2180 add_prefix (&startfile_prefix, concat (tooldir_prefix, "lib", "/"),
2183 /* More prefixes are enabled in main, after we read the specs file
2184 and determine whether this is cross-compilation or not. */
2187 /* Then create the space for the vectors and scan again. */
2189 switches = ((struct switchstr *)
2190 xmalloc ((n_switches + 1) * sizeof (struct switchstr)));
2191 infiles = (struct infile *) xmalloc ((n_infiles + 1) * sizeof (struct infile));
2194 last_language_n_infiles = -1;
2196 /* This, time, copy the text of each switch and store a pointer
2197 to the copy in the vector of switches.
2198 Store all the infiles in their vector. */
2200 for (i = 1; i < argc; i++)
2202 /* Just skip the switches that were handled by the preceding loop. */
2203 if (!strcmp (argv[i], "-Xlinker"))
2205 else if (! strncmp (argv[i], "-Wl,", 4))
2207 else if (! strncmp (argv[i], "-Wa,", 4))
2209 else if (! strcmp (argv[i], "-print-libgcc-file-name"))
2211 else if (argv[i][0] == '+' && argv[i][1] == 'e')
2213 /* Compensate for the +e options to the C++ front-end;
2214 they're there simply for cfront call-compatibility. We do
2215 some magic in default_compilers to pass them down properly.
2216 Note we deliberately start at the `+' here, to avoid passing
2217 -e0 or -e1 down into the linker. */
2218 switches[n_switches].part1 = &argv[i][0];
2219 switches[n_switches].args = 0;
2220 switches[n_switches].valid = 0;
2223 else if (argv[i][0] == '-' && argv[i][1] != 0 && argv[i][1] != 'l')
2225 register char *p = &argv[i][1];
2226 register int c = *p;
2228 if (c == 'B' || c == 'b' || c == 'V')
2230 /* Skip a separate arg, if any. */
2237 if (p[1] == 0 && i + 1 == argc)
2238 fatal ("argument to `-x' is missing");
2240 spec_lang = argv[++i];
2243 if (! strcmp (spec_lang, "none"))
2244 /* Suppress the warning if -xnone comes after the last input file,
2245 because alternate command interfaces like g++ might find it
2246 useful to place -xnone after each input file. */
2249 last_language_n_infiles = n_infiles;
2252 switches[n_switches].part1 = p;
2253 /* Deal with option arguments in separate argv elements. */
2254 if ((SWITCH_TAKES_ARG (c) > (p[1] != 0))
2255 || WORD_SWITCH_TAKES_ARG (p)) {
2257 int n_args = WORD_SWITCH_TAKES_ARG (p);
2260 /* Count only the option arguments in separate argv elements. */
2261 n_args = SWITCH_TAKES_ARG (c) - (p[1] != 0);
2263 if (i + n_args >= argc)
2264 fatal ("argument to `-%s' is missing", p);
2265 switches[n_switches].args
2266 = (char **) xmalloc ((n_args + 1) * sizeof (char *));
2268 switches[n_switches].args[j++] = argv[++i];
2269 /* Null-terminate the vector. */
2270 switches[n_switches].args[j] = 0;
2271 } else if (*switches_need_spaces != 0 && (c == 'o' || c == 'L')) {
2272 /* On some systems, ld cannot handle -o or -L without space.
2273 So split the -o or -L from its argument. */
2274 switches[n_switches].part1 = (c == 'o' ? "o" : "L");
2275 switches[n_switches].args = (char **) xmalloc (2 * sizeof (char *));
2276 switches[n_switches].args[0] = xmalloc (strlen (p));
2277 strcpy (switches[n_switches].args[0], &p[1]);
2278 switches[n_switches].args[1] = 0;
2280 switches[n_switches].args = 0;
2281 switches[n_switches].valid = 0;
2282 /* This is always valid, since gcc.c itself understands it. */
2283 if (!strcmp (p, "save-temps"))
2284 switches[n_switches].valid = 1;
2289 if ((argv[i][0] != '-' || argv[i][1] != 'l')
2290 && access (argv[i], R_OK) < 0)
2292 perror_with_name (argv[i]);
2297 infiles[n_infiles].language = spec_lang;
2298 infiles[n_infiles++].name = argv[i];
2303 if (n_infiles == last_language_n_infiles)
2304 error ("Warning: `-x %s' after last input file has no effect", spec_lang);
2306 switches[n_switches].part1 = 0;
2307 infiles[n_infiles].name = 0;
2309 /* If we have a GCC_EXEC_PREFIX envvar, modify it for cpp's sake. */
2310 if (gcc_exec_prefix)
2312 temp = (char *) xmalloc (strlen (gcc_exec_prefix) + strlen (spec_version)
2313 + strlen (spec_machine) + 3);
2314 strcpy (temp, gcc_exec_prefix);
2315 strcat (temp, spec_machine);
2317 strcat (temp, spec_version);
2319 gcc_exec_prefix = temp;
2323 /* Process a spec string, accumulating and running commands. */
2325 /* These variables describe the input file name.
2326 input_file_number is the index on outfiles of this file,
2327 so that the output file name can be stored for later use by %o.
2328 input_basename is the start of the part of the input file
2329 sans all directory names, and basename_length is the number
2330 of characters starting there excluding the suffix .c or whatever. */
2332 static char *input_filename;
2333 static int input_file_number;
2334 static int input_filename_length;
2335 static int basename_length;
2336 static char *input_basename;
2337 static char *input_suffix;
2339 /* These are variables used within do_spec and do_spec_1. */
2341 /* Nonzero if an arg has been started and not yet terminated
2342 (with space, tab or newline). */
2343 static int arg_going;
2345 /* Nonzero means %d or %g has been seen; the next arg to be terminated
2346 is a temporary file name. */
2347 static int delete_this_arg;
2349 /* Nonzero means %w has been seen; the next arg to be terminated
2350 is the output file name of this compilation. */
2351 static int this_is_output_file;
2353 /* Nonzero means %s has been seen; the next arg to be terminated
2354 is the name of a library file and we should try the standard
2355 search dirs for it. */
2356 static int this_is_library_file;
2358 /* Nonzero means that the input of this command is coming from a pipe. */
2359 static int input_from_pipe;
2361 /* Process the spec SPEC and run the commands specified therein.
2362 Returns 0 if the spec is successfully processed; -1 if failed. */
2372 delete_this_arg = 0;
2373 this_is_output_file = 0;
2374 this_is_library_file = 0;
2375 input_from_pipe = 0;
2377 value = do_spec_1 (spec, 0, NULL_PTR);
2379 /* Force out any unfinished command.
2380 If -pipe, this forces out the last command if it ended in `|'. */
2383 if (argbuf_index > 0 && !strcmp (argbuf[argbuf_index - 1], "|"))
2386 if (argbuf_index > 0)
2393 /* Process the sub-spec SPEC as a portion of a larger spec.
2394 This is like processing a whole spec except that we do
2395 not initialize at the beginning and we do not supply a
2396 newline by default at the end.
2397 INSWITCH nonzero means don't process %-sequences in SPEC;
2398 in this case, % is treated as an ordinary character.
2399 This is used while substituting switches.
2400 INSWITCH nonzero also causes SPC not to terminate an argument.
2402 Value is zero unless a line was finished
2403 and the command on that line reported an error. */
2406 do_spec_1 (spec, inswitch, soft_matched_part)
2409 char *soft_matched_part;
2411 register char *p = spec;
2418 /* If substituting a switch, treat all chars like letters.
2419 Otherwise, NL, SPC, TAB and % are special. */
2420 switch (inswitch ? 'a' : c)
2423 /* End of line: finish any pending argument,
2424 then run the pending command if one has been started. */
2427 obstack_1grow (&obstack, 0);
2428 string = obstack_finish (&obstack);
2429 if (this_is_library_file)
2430 string = find_file (string);
2431 store_arg (string, delete_this_arg, this_is_output_file);
2432 if (this_is_output_file)
2433 outfiles[input_file_number] = string;
2437 if (argbuf_index > 0 && !strcmp (argbuf[argbuf_index - 1], "|"))
2440 for (i = 0; i < n_switches; i++)
2441 if (!strcmp (switches[i].part1, "pipe"))
2444 /* A `|' before the newline means use a pipe here,
2445 but only if -pipe was specified.
2446 Otherwise, execute now and don't pass the `|' as an arg. */
2449 input_from_pipe = 1;
2450 switches[i].valid = 1;
2457 if (argbuf_index > 0)
2463 /* Reinitialize for a new command, and for a new argument. */
2466 delete_this_arg = 0;
2467 this_is_output_file = 0;
2468 this_is_library_file = 0;
2469 input_from_pipe = 0;
2473 /* End any pending argument. */
2476 obstack_1grow (&obstack, 0);
2477 string = obstack_finish (&obstack);
2478 if (this_is_library_file)
2479 string = find_file (string);
2480 store_arg (string, delete_this_arg, this_is_output_file);
2481 if (this_is_output_file)
2482 outfiles[input_file_number] = string;
2486 obstack_1grow (&obstack, c);
2492 /* Space or tab ends an argument if one is pending. */
2495 obstack_1grow (&obstack, 0);
2496 string = obstack_finish (&obstack);
2497 if (this_is_library_file)
2498 string = find_file (string);
2499 store_arg (string, delete_this_arg, this_is_output_file);
2500 if (this_is_output_file)
2501 outfiles[input_file_number] = string;
2503 /* Reinitialize for a new argument. */
2505 delete_this_arg = 0;
2506 this_is_output_file = 0;
2507 this_is_library_file = 0;
2514 fatal ("Invalid specification! Bug in cc.");
2517 obstack_grow (&obstack, input_basename, basename_length);
2522 delete_this_arg = 2;
2525 /* Dump out the directories specified with LIBRARY_PATH,
2526 followed by the absolute directories
2527 that we search for startfiles. */
2529 for (i = 0; i < 2; i++)
2531 struct prefix_list *pl
2532 = (i == 0 ? library_prefix.plist : startfile_prefix.plist);
2534 char *buffer = (char *) xmalloc (bufsize);
2537 for (; pl; pl = pl->next)
2539 #ifdef RELATIVE_PREFIX_NOT_LINKDIR
2540 /* Used on systems which record the specified -L dirs
2541 and use them to search for dynamic linking. */
2542 /* Relative directories always come from -B,
2543 and it is better not to use them for searching
2544 at run time. In particular, stage1 loses */
2545 if (pl->prefix[0] != '/')
2550 if (is_linker_dir (pl->prefix, machine_suffix))
2552 do_spec_1 ("-L", 0, NULL_PTR);
2553 #ifdef SPACE_AFTER_L_OPTION
2554 do_spec_1 (" ", 0, NULL_PTR);
2556 do_spec_1 (pl->prefix, 1, NULL_PTR);
2557 /* Remove slash from machine_suffix. */
2558 if (strlen (machine_suffix) >= bufsize)
2559 bufsize = strlen (machine_suffix) * 2 + 1;
2560 buffer = (char *) xrealloc (buffer, bufsize);
2561 strcpy (buffer, machine_suffix);
2562 idx = strlen (buffer);
2563 if (buffer[idx - 1] == '/')
2564 buffer[idx - 1] = 0;
2565 do_spec_1 (buffer, 1, NULL_PTR);
2566 /* Make this a separate argument. */
2567 do_spec_1 (" ", 0, NULL_PTR);
2570 if (!pl->require_machine_suffix)
2572 if (is_linker_dir (pl->prefix, ""))
2574 do_spec_1 ("-L", 0, NULL_PTR);
2575 #ifdef SPACE_AFTER_L_OPTION
2576 do_spec_1 (" ", 0, NULL_PTR);
2578 /* Remove slash from pl->prefix. */
2579 if (strlen (pl->prefix) >= bufsize)
2580 bufsize = strlen (pl->prefix) * 2 + 1;
2581 buffer = (char *) xrealloc (buffer, bufsize);
2582 strcpy (buffer, pl->prefix);
2583 idx = strlen (buffer);
2584 if (buffer[idx - 1] == '/')
2585 buffer[idx - 1] = 0;
2586 do_spec_1 (buffer, 1, NULL_PTR);
2587 /* Make this a separate argument. */
2588 do_spec_1 (" ", 0, NULL_PTR);
2597 /* {...:%efoo} means report an error with `foo' as error message
2598 and don't execute any more commands for this file. */
2602 while (*p != 0 && *p != '\n') p++;
2603 buf = (char *) alloca (p - q + 1);
2604 strncpy (buf, q, p - q);
2614 if (save_temps_flag)
2615 obstack_grow (&obstack, input_basename, basename_length);
2618 #ifdef MKTEMP_EACH_FILE
2619 /* ??? This has a problem: the total number of
2620 values mktemp can return is limited.
2621 That matters for the names of object files.
2622 In 2.4, do something about that. */
2623 struct temp_name *t;
2625 while (*p == '.' || isalpha (*p))
2628 /* See if we already have an association of %g/%u/%U and
2630 for (t = temp_names; t; t = t->next)
2631 if (t->length == p - suffix
2632 && strncmp (t->suffix, suffix, p - suffix) == 0
2633 && t->unique == (c != 'g'))
2636 /* Make a new association if needed. %u requires one. */
2637 if (t == 0 || c == 'u')
2641 t = (struct temp_name *) xmalloc (sizeof (struct temp_name));
2642 t->next = temp_names;
2645 t->length = p - suffix;
2646 t->suffix = save_string (suffix, p - suffix);
2647 t->unique = (c != 'g');
2648 choose_temp_base ();
2649 t->filename = temp_filename;
2650 t->filename_length = temp_filename_length;
2653 obstack_grow (&obstack, t->filename, t->filename_length);
2654 delete_this_arg = 1;
2656 obstack_grow (&obstack, temp_filename, temp_filename_length);
2657 if (c == 'u' || c == 'U')
2663 sprintf (buff, "%d", unique);
2664 obstack_grow (&obstack, buff, strlen (buff));
2667 delete_this_arg = 1;
2673 obstack_grow (&obstack, input_filename, input_filename_length);
2678 if (gcc_exec_prefix)
2680 do_spec_1 ("-iprefix", 1, NULL_PTR);
2681 /* Make this a separate argument. */
2682 do_spec_1 (" ", 0, NULL_PTR);
2683 do_spec_1 (gcc_exec_prefix, 1, NULL_PTR);
2684 do_spec_1 (" ", 0, NULL_PTR);
2691 for (f = 0; f < n_infiles; f++)
2692 store_arg (outfiles[f], 0, 0);
2697 this_is_library_file = 1;
2701 this_is_output_file = 1;
2706 int index = argbuf_index;
2707 /* Handle the {...} following the %W. */
2710 p = handle_braces (p + 1);
2713 /* If any args were output, mark the last one for deletion
2715 if (argbuf_index != index)
2716 record_temp_file (argbuf[argbuf_index - 1], 0, 1);
2720 /* %x{OPTION} records OPTION for %X to output. */
2726 /* Skip past the option value and make a copy. */
2731 string = save_string (p1 + 1, p - p1 - 2);
2733 /* See if we already recorded this option. */
2734 for (i = 0; i < n_linker_options; i++)
2735 if (! strcmp (string, linker_options[i]))
2741 /* This option is new; add it. */
2743 if (!linker_options)
2745 = (char **) xmalloc (n_linker_options * sizeof (char **));
2748 = (char **) xrealloc (linker_options,
2749 n_linker_options * sizeof (char **));
2751 linker_options[n_linker_options - 1] = string;
2755 /* Dump out the options accumulated previously using %x,
2756 -Xlinker and -Wl,. */
2758 for (i = 0; i < n_linker_options; i++)
2760 do_spec_1 (linker_options[i], 1, NULL_PTR);
2761 /* Make each accumulated option a separate argument. */
2762 do_spec_1 (" ", 0, NULL_PTR);
2766 /* Dump out the options accumulated previously using -Wa,. */
2768 for (i = 0; i < n_assembler_options; i++)
2770 do_spec_1 (assembler_options[i], 1, NULL_PTR);
2771 /* Make each accumulated option a separate argument. */
2772 do_spec_1 (" ", 0, NULL_PTR);
2776 /* Here are digits and numbers that just process
2777 a certain constant string as a spec.
2778 /* Here are digits and numbers that just process
2779 a certain constant string as a spec. */
2782 value = do_spec_1 (cc1_spec, 0, NULL_PTR);
2788 value = do_spec_1 (cc1plus_spec, 0, NULL_PTR);
2794 value = do_spec_1 (asm_spec, 0, NULL_PTR);
2800 value = do_spec_1 (asm_final_spec, 0, NULL_PTR);
2806 value = do_spec_1 (signed_char_spec, 0, NULL_PTR);
2812 value = do_spec_1 (cpp_spec, 0, NULL_PTR);
2818 value = do_spec_1 (endfile_spec, 0, NULL_PTR);
2824 value = do_spec_1 (link_spec, 0, NULL_PTR);
2830 value = do_spec_1 (lib_spec, 0, NULL_PTR);
2837 char *x = (char *) alloca (strlen (cpp_predefines) + 1);
2841 /* Copy all of the -D options in CPP_PREDEFINES into BUF. */
2845 if (! strncmp (y, "-D", 2))
2846 /* Copy the whole option. */
2847 while (*y && *y != ' ' && *y != '\t')
2849 else if (*y == ' ' || *y == '\t')
2850 /* Copy whitespace to the result. */
2852 /* Don't copy other options. */
2859 value = do_spec_1 (buf, 0, NULL_PTR);
2867 char *x = (char *) alloca (strlen (cpp_predefines) * 4 + 1);
2871 /* Copy all of CPP_PREDEFINES into BUF,
2872 but put __ after every -D and at the end of each arg. */
2876 if (! strncmp (y, "-D", 2))
2883 if (strncmp (y, "__", 2))
2885 /* Stick __ at front of macro name. */
2888 /* Arrange to stick __ at the end as well. */
2892 /* Copy the macro name. */
2893 while (*y && *y != '=' && *y != ' ' && *y != '\t')
2902 /* Copy the value given, if any. */
2903 while (*y && *y != ' ' && *y != '\t')
2906 else if (*y == ' ' || *y == '\t')
2907 /* Copy whitespace to the result. */
2909 /* Don't copy -A options */
2915 /* Copy all of CPP_PREDEFINES into BUF,
2916 but put __ after every -D. */
2920 if (! strncmp (y, "-D", 2))
2925 if (strncmp (y, "__", 2))
2927 /* Stick __ at front of macro name. */
2932 /* Copy the macro name. */
2933 while (*y && *y != '=' && *y != ' ' && *y != '\t')
2936 /* Copy the value given, if any. */
2937 while (*y && *y != ' ' && *y != '\t')
2940 else if (*y == ' ' || *y == '\t')
2941 /* Copy whitespace to the result. */
2943 /* Don't copy -A options */
2949 /* Copy all of the -A options in CPP_PREDEFINES into BUF. */
2953 if (! strncmp (y, "-A", 2))
2954 /* Copy the whole option. */
2955 while (*y && *y != ' ' && *y != '\t')
2957 else if (*y == ' ' || *y == '\t')
2958 /* Copy whitespace to the result. */
2960 /* Don't copy other options. */
2967 value = do_spec_1 (buf, 0, NULL_PTR);
2974 value = do_spec_1 (startfile_spec, 0, NULL_PTR);
2979 /* Here we define characters other than letters and digits. */
2982 p = handle_braces (p);
2988 obstack_1grow (&obstack, '%');
2992 do_spec_1 (soft_matched_part, 1, NULL_PTR);
2993 do_spec_1 (" ", 0, NULL_PTR);
2996 /* Process a string found as the value of a spec given by name.
2997 This feature allows individual machine descriptions
2998 to add and use their own specs.
2999 %[...] modifies -D options the way %P does;
3000 %(...) uses the spec unmodified. */
3005 struct spec_list *sl;
3008 /* The string after the S/P is the name of a spec that is to be
3010 while (*p && *p != ')' && *p != ']')
3013 /* See if it's in the list */
3014 for (len = p - name, sl = specs; sl; sl = sl->next)
3015 if (strncmp (sl->name, name, len) == 0 && !sl->name[len])
3025 value = do_spec_1 (name, 0, NULL_PTR);
3031 char *x = (char *) alloca (strlen (name) * 2 + 1);
3035 /* Copy all of NAME into BUF, but put __ after
3036 every -D and at the end of each arg, */
3039 if (! strncmp (y, "-D", 2))
3047 else if (*y == ' ' || *y == 0)
3061 value = do_spec_1 (buf, 0, NULL_PTR);
3067 /* Discard the closing paren or bracket. */
3074 if (input_from_pipe)
3075 do_spec_1 ("-", 0, NULL_PTR);
3084 /* Backslash: treat next character as ordinary. */
3089 /* Ordinary character: put it into the current argument. */
3090 obstack_1grow (&obstack, c);
3094 return 0; /* End of string */
3097 /* Return 0 if we call do_spec_1 and that returns -1. */
3110 /* A `|' after the open-brace means,
3111 if the test fails, output a single minus sign rather than nothing.
3112 This is used in %{|!pipe:...}. */
3116 /* A `!' after the open-brace negates the condition:
3117 succeed if the specified switch is not present. */
3121 /* A `.' after the open-brace means test against the current suffix. */
3131 while (*p != ':' && *p != '}') p++;
3134 register int count = 1;
3152 int found = (input_suffix != 0
3153 && strlen (input_suffix) == p - filter
3154 && strncmp (input_suffix, filter, p - filter) == 0);
3160 && do_spec_1 (save_string (p + 1, q - p - 2), 0, NULL_PTR) < 0)
3165 else if (p[-1] == '*' && p[0] == '}')
3167 /* Substitute all matching switches as separate args. */
3170 for (i = 0; i < n_switches; i++)
3171 if (!strncmp (switches[i].part1, filter, p - filter))
3176 /* Test for presence of the specified switch. */
3180 /* If name specified ends in *, as in {x*:...},
3181 check for %* and handle that case. */
3182 if (p[-1] == '*' && !negate)
3187 /* First see whether we have %*. */
3191 if (*r == '%' && r[1] == '*')
3195 /* If we do, handle that case. */
3198 /* Substitute all matching switches as separate args.
3199 But do this by substituting for %*
3200 in the text that follows the colon. */
3202 unsigned hard_match_len = p - filter - 1;
3203 char *string = save_string (p + 1, q - p - 2);
3205 for (i = 0; i < n_switches; i++)
3206 if (!strncmp (switches[i].part1, filter, hard_match_len))
3208 do_spec_1 (string, 0, &switches[i].part1[hard_match_len]);
3209 /* Pass any arguments this switch has. */
3217 /* If name specified ends in *, as in {x*:...},
3218 check for presence of any switch name starting with x. */
3221 for (i = 0; i < n_switches; i++)
3223 unsigned hard_match_len = p - filter - 1;
3225 if (!strncmp (switches[i].part1, filter, hard_match_len))
3227 switches[i].valid = 1;
3232 /* Otherwise, check for presence of exact name specified. */
3235 for (i = 0; i < n_switches; i++)
3237 if (!strncmp (switches[i].part1, filter, p - filter)
3238 && switches[i].part1[p - filter] == 0)
3240 switches[i].valid = 1;
3247 /* If it is as desired (present for %{s...}, absent for %{-s...})
3248 then substitute either the switch or the specified
3249 conditional text. */
3250 if (present != negate)
3258 if (do_spec_1 (save_string (p + 1, q - p - 2), 0, NULL_PTR) < 0)
3264 /* Here if a %{|...} conditional fails: output a minus sign,
3265 which means "standard output" or "standard input". */
3266 do_spec_1 ("-", 0, NULL_PTR);
3273 /* Pass a switch to the current accumulating command
3274 in the same form that we received it.
3275 SWITCHNUM identifies the switch; it is an index into
3276 the vector of switches gcc received, which is `switches'.
3277 This cannot fail since it never finishes a command line.
3279 If OMIT_FIRST_WORD is nonzero, then we omit .part1 of the argument. */
3282 give_switch (switchnum, omit_first_word)
3284 int omit_first_word;
3286 if (!omit_first_word)
3288 do_spec_1 ("-", 0, NULL_PTR);
3289 do_spec_1 (switches[switchnum].part1, 1, NULL_PTR);
3291 do_spec_1 (" ", 0, NULL_PTR);
3292 if (switches[switchnum].args != 0)
3295 for (p = switches[switchnum].args; *p; p++)
3297 do_spec_1 (*p, 1, NULL_PTR);
3298 do_spec_1 (" ", 0, NULL_PTR);
3301 switches[switchnum].valid = 1;
3304 /* Search for a file named NAME trying various prefixes including the
3305 user's -B prefix and some standard ones.
3306 Return the absolute file name found. If nothing is found, return NAME. */
3314 newname = find_a_file (&startfile_prefix, name, R_OK);
3315 return newname ? newname : name;
3318 /* Determine whether a -L option is relevant. Not required for certain
3319 fixed names and for directories that don't exist. */
3322 is_linker_dir (path1, path2)
3326 int len1 = strlen (path1);
3327 int len2 = strlen (path2);
3328 char *path = (char *) alloca (3 + len1 + len2);
3332 /* Construct the path from the two parts. Ensure the string ends with "/.".
3333 The resulting path will be a directory even if the given path is a
3335 bcopy (path1, path, len1);
3336 bcopy (path2, path + len1, len2);
3337 cp = path + len1 + len2;
3343 /* Exclude directories that the linker is known to search. */
3344 if ((cp - path == 6 && strcmp (path, "/lib/.") == 0)
3345 || (cp - path == 10 && strcmp (path, "/usr/lib/.") == 0))
3348 return (stat (path, &st) >= 0 && S_ISDIR (st.st_mode));
3351 /* On fatal signals, delete all the temporary files. */
3354 fatal_error (signum)
3357 signal (signum, SIG_DFL);
3358 delete_failure_queue ();
3359 delete_temp_files ();
3360 /* Get the same signal again, this time not handled,
3361 so its normal effect occurs. */
3362 kill (getpid (), signum);
3373 int linker_was_run = 0;
3374 char *explicit_link_files;
3378 p = argv[0] + strlen (argv[0]);
3379 while (p != argv[0] && p[-1] != '/') --p;
3382 if (signal (SIGINT, SIG_IGN) != SIG_IGN)
3383 signal (SIGINT, fatal_error);
3384 if (signal (SIGHUP, SIG_IGN) != SIG_IGN)
3385 signal (SIGHUP, fatal_error);
3386 if (signal (SIGTERM, SIG_IGN) != SIG_IGN)
3387 signal (SIGTERM, fatal_error);
3389 if (signal (SIGPIPE, SIG_IGN) != SIG_IGN)
3390 signal (SIGPIPE, fatal_error);
3394 argbuf = (char **) xmalloc (argbuf_length * sizeof (char *));
3396 obstack_init (&obstack);
3398 /* Set up to remember the pathname of gcc and any options
3399 needed for collect. */
3400 obstack_init (&collect_obstack);
3401 obstack_grow (&collect_obstack, "COLLECT_GCC=", sizeof ("COLLECT_GCC=")-1);
3402 obstack_grow (&collect_obstack, programname, strlen (programname)+1);
3403 putenv (obstack_finish (&collect_obstack));
3405 /* Choose directory for temp files. */
3407 choose_temp_base ();
3409 /* Make a table of what switches there are (switches, n_switches).
3410 Make a table of specified input files (infiles, n_infiles).
3411 Decode switches that are handled locally. */
3413 process_command (argc, argv);
3415 /* Initialize the vector of specs to just the default.
3416 This means one element containing 0s, as a terminator. */
3418 compilers = (struct compiler *) xmalloc (sizeof default_compilers);
3419 bcopy (default_compilers, compilers, sizeof default_compilers);
3420 n_compilers = n_default_compilers;
3422 /* Read specs from a file if there is one. */
3424 machine_suffix = concat (spec_machine, "/", concat (spec_version, "/", ""));
3425 just_machine_suffix = concat (spec_machine, "/", "");
3427 specs_file = find_a_file (&startfile_prefix, "specs", R_OK);
3428 /* Read the specs file unless it is a default one. */
3429 if (specs_file != 0 && strcmp (specs_file, "specs"))
3430 read_specs (specs_file);
3432 /* If not cross-compiling, look for startfiles in the standard places. */
3433 /* The fact that these are done here, after reading the specs file,
3434 means that it cannot be found in these directories.
3435 But that's okay. It should never be there anyway. */
3438 #ifdef MD_EXEC_PREFIX
3439 add_prefix (&exec_prefix, md_exec_prefix, 0, 0, NULL_PTR);
3440 add_prefix (&startfile_prefix, md_exec_prefix, 0, 0, NULL_PTR);
3443 #ifdef MD_STARTFILE_PREFIX
3444 add_prefix (&startfile_prefix, md_startfile_prefix, 0, 0, NULL_PTR);
3447 #ifdef MD_STARTFILE_PREFIX_1
3448 add_prefix (&startfile_prefix, md_startfile_prefix_1, 0, 0, NULL_PTR);
3451 add_prefix (&startfile_prefix, standard_startfile_prefix, 0, 0,
3453 add_prefix (&startfile_prefix, standard_startfile_prefix_1, 0, 0,
3455 add_prefix (&startfile_prefix, standard_startfile_prefix_2, 0, 0,
3457 #if 0 /* Can cause surprises, and one can use -B./ instead. */
3458 add_prefix (&startfile_prefix, "./", 0, 1, NULL_PTR);
3462 /* Now we have the specs.
3463 Set the `valid' bits for switches that match anything in any spec. */
3465 validate_all_switches ();
3467 /* Warn about any switches that no pass was interested in. */
3469 for (i = 0; i < n_switches; i++)
3470 if (! switches[i].valid)
3471 error ("unrecognized option `-%s'", switches[i].part1);
3473 if (print_libgcc_file_name)
3475 printf ("%s\n", find_file ("libgcc.a"));
3479 /* Obey some of the options. */
3483 fprintf (stderr, "gcc version %s\n", version_string);
3489 fatal ("No input files specified.");
3491 /* Make a place to record the compiler output file names
3492 that correspond to the input files. */
3494 outfiles = (char **) xmalloc (n_infiles * sizeof (char *));
3495 bzero (outfiles, n_infiles * sizeof (char *));
3497 /* Record which files were specified explicitly as link input. */
3499 explicit_link_files = xmalloc (n_infiles);
3500 bzero (explicit_link_files, n_infiles);
3502 for (i = 0; i < n_infiles; i++)
3504 register struct compiler *cp = 0;
3505 int this_file_error = 0;
3507 /* Tell do_spec what to substitute for %i. */
3509 input_filename = infiles[i].name;
3510 input_filename_length = strlen (input_filename);
3511 input_file_number = i;
3513 /* Use the same thing in %o, unless cp->spec says otherwise. */
3515 outfiles[i] = input_filename;
3517 /* Figure out which compiler from the file's suffix. */
3519 cp = lookup_compiler (infiles[i].name, input_filename_length,
3520 infiles[i].language);
3524 /* Ok, we found an applicable compiler. Run its spec. */
3525 /* First say how much of input_filename to substitute for %b */
3529 input_basename = input_filename;
3530 for (p = input_filename; *p; p++)
3532 input_basename = p + 1;
3534 /* Find a suffix starting with the last period,
3535 and set basename_length to exclude that suffix. */
3536 basename_length = strlen (input_basename);
3537 p = input_basename + basename_length;
3538 while (p != input_basename && *p != '.') --p;
3539 if (*p == '.' && p != input_basename)
3541 basename_length = p - input_basename;
3542 input_suffix = p + 1;
3548 for (j = 0; j < sizeof cp->spec / sizeof cp->spec[0]; j++)
3550 len += strlen (cp->spec[j]);
3552 p = (char *) xmalloc (len + 1);
3555 for (j = 0; j < sizeof cp->spec / sizeof cp->spec[0]; j++)
3558 strcpy (p + len, cp->spec[j]);
3559 len += strlen (cp->spec[j]);
3562 value = do_spec (p);
3565 this_file_error = 1;
3568 /* If this file's name does not contain a recognized suffix,
3569 record it as explicit linker input. */
3572 explicit_link_files[i] = 1;
3574 /* Clear the delete-on-failure queue, deleting the files in it
3575 if this compilation failed. */
3577 if (this_file_error)
3579 delete_failure_queue ();
3582 /* If this compilation succeeded, don't delete those files later. */
3583 clear_failure_queue ();
3586 /* Run ld to link all the compiler output files. */
3588 if (error_count == 0)
3590 int tmp = execution_count;
3594 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
3596 putenv_from_prefixes (&exec_prefix, "COMPILER_PATH=");
3597 putenv_from_prefixes (&startfile_prefix, "LIBRARY_PATH=");
3599 /* Build COLLECT_GCC_OPTIONS to have all of the options specified to
3601 obstack_grow (&collect_obstack, "COLLECT_GCC_OPTIONS=",
3602 sizeof ("COLLECT_GCC_OPTIONS=")-1);
3605 for (i = 0; i < n_switches; i++)
3609 obstack_grow (&collect_obstack, " ", 1);
3612 obstack_grow (&collect_obstack, "-", 1);
3613 obstack_grow (&collect_obstack, switches[i].part1,
3614 strlen (switches[i].part1));
3616 for (args = switches[i].args; args && *args; args++)
3618 obstack_grow (&collect_obstack, " ", 1);
3619 obstack_grow (&collect_obstack, *args, strlen (*args));
3622 obstack_grow (&collect_obstack, "\0", 1);
3623 putenv (obstack_finish (&collect_obstack));
3625 value = do_spec (link_command_spec);
3628 linker_was_run = (tmp != execution_count);
3631 /* Warn if a -B option was specified but the prefix was never used. */
3632 unused_prefix_warnings (&exec_prefix);
3633 unused_prefix_warnings (&startfile_prefix);
3635 /* If options said don't run linker,
3636 complain about input files to be given to the linker. */
3638 if (! linker_was_run && error_count == 0)
3639 for (i = 0; i < n_infiles; i++)
3640 if (explicit_link_files[i])
3641 error ("%s: linker input file unused since linking not done",
3644 /* Delete some or all of the temporary files we made. */
3647 delete_failure_queue ();
3648 delete_temp_files ();
3650 exit (error_count > 0 ? (signal_count ? 2 : 1) : 0);
3655 /* Find the proper compilation spec for the file name NAME,
3656 whose length is LENGTH. LANGUAGE is the specified language,
3657 or 0 if none specified. */
3659 static struct compiler *
3660 lookup_compiler (name, length, language)
3665 struct compiler *cp;
3667 /* Look for the language, if one is spec'd. */
3670 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
3674 if (cp->suffix[0] == '@'
3675 && !strcmp (cp->suffix + 1, language))
3679 error ("language %s not recognized", language);
3682 /* Look for a suffix. */
3683 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
3685 if (/* The suffix `-' matches only the file name `-'. */
3686 (!strcmp (cp->suffix, "-") && !strcmp (name, "-"))
3688 (strlen (cp->suffix) < length
3689 /* See if the suffix matches the end of NAME. */
3690 && !strcmp (cp->suffix,
3691 name + length - strlen (cp->suffix))))
3693 if (cp->spec[0][0] == '@')
3695 struct compiler *new;
3696 /* An alias entry maps a suffix to a language.
3697 Search for the language; pass 0 for NAME and LENGTH
3698 to avoid infinite recursion if language not found.
3699 Construct the new compiler spec. */
3700 language = cp->spec[0] + 1;
3701 new = (struct compiler *) xmalloc (sizeof (struct compiler));
3702 new->suffix = cp->suffix;
3703 bcopy (lookup_compiler (NULL_PTR, 0, language)->spec,
3704 new->spec, sizeof new->spec);
3707 /* A non-alias entry: return it. */
3719 register char *value = (char *) malloc (size);
3721 fatal ("virtual memory exhausted");
3726 xrealloc (ptr, size)
3730 register char *value = (char *) realloc (ptr, size);
3732 fatal ("virtual memory exhausted");
3736 /* Return a newly-allocated string whose contents concatenate those of s1, s2, s3. */
3742 int len1 = strlen (s1), len2 = strlen (s2), len3 = strlen (s3);
3743 char *result = xmalloc (len1 + len2 + len3 + 1);
3745 strcpy (result, s1);
3746 strcpy (result + len1, s2);
3747 strcpy (result + len1 + len2, s3);
3748 *(result + len1 + len2 + len3) = 0;
3754 save_string (s, len)
3758 register char *result = xmalloc (len + 1);
3760 bcopy (s, result, len);
3766 pfatal_with_name (name)
3771 if (errno < sys_nerr)
3772 s = concat ("%s: ", sys_errlist[errno], "");
3774 s = "cannot open %s";
3779 perror_with_name (name)
3784 if (errno < sys_nerr)
3785 s = concat ("%s: ", sys_errlist[errno], "");
3787 s = "cannot open %s";
3797 if (errno < sys_nerr)
3798 s = concat ("installation problem, cannot exec %s: ",
3799 sys_errlist[errno], "");
3801 s = "installation problem, cannot exec %s";
3805 /* More 'friendly' abort that prints the line and file.
3806 config.h can #define abort fancy_abort if you like that sort of thing. */
3811 fatal ("Internal gcc abort.");
3816 /* Output an error message and exit */
3826 format = va_arg (ap, char *);
3827 fprintf (stderr, "%s: ", programname);
3828 vfprintf (stderr, format, ap);
3830 fprintf (stderr, "\n");
3831 delete_temp_files ();
3843 format = va_arg (ap, char *);
3844 fprintf (stderr, "%s: ", programname);
3845 vfprintf (stderr, format, ap);
3848 fprintf (stderr, "\n");
3851 #else /* not HAVE_VPRINTF */
3854 fatal (msg, arg1, arg2)
3855 char *msg, *arg1, *arg2;
3857 error (msg, arg1, arg2);
3858 delete_temp_files ();
3863 error (msg, arg1, arg2)
3864 char *msg, *arg1, *arg2;
3866 fprintf (stderr, "%s: ", programname);
3867 fprintf (stderr, msg, arg1, arg2);
3868 fprintf (stderr, "\n");
3871 #endif /* not HAVE_VPRINTF */
3875 validate_all_switches ()
3877 struct compiler *comp;
3880 struct spec_list *spec;
3882 for (comp = compilers; comp->spec[0]; comp++)
3885 for (i = 0; i < sizeof comp->spec / sizeof comp->spec[0] && comp->spec[i]; i++)
3889 if (c == '%' && *p == '{')
3890 /* We have a switch spec. */
3891 validate_switches (p + 1);
3895 /* look through the linked list of extra specs read from the specs file */
3896 for (spec = specs; spec ; spec = spec->next)
3900 if (c == '%' && *p == '{')
3901 /* We have a switch spec. */
3902 validate_switches (p + 1);
3905 p = link_command_spec;
3907 if (c == '%' && *p == '{')
3908 /* We have a switch spec. */
3909 validate_switches (p + 1);
3911 /* Now notice switches mentioned in the machine-specific specs. */
3915 if (c == '%' && *p == '{')
3916 /* We have a switch spec. */
3917 validate_switches (p + 1);
3921 if (c == '%' && *p == '{')
3922 /* We have a switch spec. */
3923 validate_switches (p + 1);
3927 if (c == '%' && *p == '{')
3928 /* We have a switch spec. */
3929 validate_switches (p + 1);
3931 p = signed_char_spec;
3933 if (c == '%' && *p == '{')
3934 /* We have a switch spec. */
3935 validate_switches (p + 1);
3939 if (c == '%' && *p == '{')
3940 /* We have a switch spec. */
3941 validate_switches (p + 1);
3945 if (c == '%' && *p == '{')
3946 /* We have a switch spec. */
3947 validate_switches (p + 1);
3951 if (c == '%' && *p == '{')
3952 /* We have a switch spec. */
3953 validate_switches (p + 1);
3957 if (c == '%' && *p == '{')
3958 /* We have a switch spec. */
3959 validate_switches (p + 1);
3963 if (c == '%' && *p == '{')
3964 /* We have a switch spec. */
3965 validate_switches (p + 1);
3968 /* Look at the switch-name that comes after START
3969 and mark as valid all supplied switches that match it. */
3972 validate_switches (start)
3975 register char *p = start;
3990 while (*p != ':' && *p != '}') p++;
3994 else if (p[-1] == '*')
3996 /* Mark all matching switches as valid. */
3998 for (i = 0; i < n_switches; i++)
3999 if (!strncmp (switches[i].part1, filter, p - filter))
4000 switches[i].valid = 1;
4004 /* Mark an exact matching switch as valid. */
4005 for (i = 0; i < n_switches; i++)
4007 if (!strncmp (switches[i].part1, filter, p - filter)
4008 && switches[i].part1[p - filter] == 0)
4009 switches[i].valid = 1;