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 = "\
579 %{!c:%{!M:%{!MM:%{!E:%{!S:ld %l %X %{o*} %{A} %{d} %{e*} %{m} %{N} %{n} \
580 %{r} %{s} %{T*} %{t} %{u*} %{x} %{z}\
581 %{!A:%{!nostdlib:%S}} %{static:}\
582 %{L*} %D %o %{!nostdlib:libgcc.a%s %L libgcc.a%s %{!A:%E}}\n }}}}}";
584 #ifdef LINK_LIBGCC_SPECIAL
585 /* Have gcc do the search for libgcc.a, and don't generate -L options. */
586 static char *link_command_spec = "\
587 %{!c:%{!M:%{!MM:%{!E:%{!S:ld %l %X %{o*} %{A} %{d} %{e*} %{m} %{N} %{n} \
588 %{r} %{s} %{T*} %{t} %{u*} %{x} %{z}\
589 %{!A:%{!nostdlib:%S}} %{static:}\
590 %{L*} %o %{!nostdlib:libgcc.a%s %L libgcc.a%s %{!A:%E}}\n }}}}}";
592 /* Use -L and have the linker do the search for -lgcc. */
593 static char *link_command_spec = "\
594 %{!c:%{!M:%{!MM:%{!E:%{!S:ld %l %X %{o*} %{A} %{d} %{e*} %{m} %{N} %{n} \
595 %{r} %{s} %{T*} %{t} %{u*} %{x} %{z}\
596 %{!A:%{!nostdlib:%S}} %{static:}\
597 %{L*} %D %o %{!nostdlib:-lgcc %L -lgcc %{!A:%E}}\n }}}}}";
601 /* A vector of options to give to the linker.
602 These options are accumulated by -Xlinker and -Wl,
603 and substituted into the linker command with %X. */
604 static int n_linker_options;
605 static char **linker_options;
607 /* A vector of options to give to the assembler.
608 These options are accumulated by -Wa,
609 and substituted into the assembler command with %X. */
610 static int n_assembler_options;
611 static char **assembler_options;
613 /* Read compilation specs from a file named FILENAME,
614 replacing the default ones.
616 A suffix which starts with `*' is a definition for
617 one of the machine-specific sub-specs. The "suffix" should be
618 *asm, *cc1, *cpp, *link, *startfile, *signed_char, etc.
619 The corresponding spec is stored in asm_spec, etc.,
620 rather than in the `compilers' vector.
622 Anything invalid in the file is a fatal error. */
625 read_specs (filename)
634 fprintf (stderr, "Reading specs from %s\n", filename);
636 /* Open and stat the file. */
637 desc = open (filename, 0, 0);
639 pfatal_with_name (filename);
640 if (stat (filename, &statbuf) < 0)
641 pfatal_with_name (filename);
643 /* Read contents of file into BUFFER. */
644 buffer = xmalloc ((unsigned) statbuf.st_size + 1);
645 read (desc, buffer, (unsigned) statbuf.st_size);
646 buffer[statbuf.st_size] = 0;
649 /* Scan BUFFER for specs, putting them in the vector. */
655 char *in, *out, *p1, *p2;
657 /* Advance P in BUFFER to the next nonblank nocomment line. */
658 p = skip_whitespace (p);
662 /* Find the colon that should end the suffix. */
664 while (*p1 && *p1 != ':' && *p1 != '\n') p1++;
665 /* The colon shouldn't be missing. */
667 fatal ("specs file malformed after %d characters", p1 - buffer);
668 /* Skip back over trailing whitespace. */
670 while (p2 > buffer && (p2[-1] == ' ' || p2[-1] == '\t')) p2--;
671 /* Copy the suffix to a string. */
672 suffix = save_string (p, p2 - p);
673 /* Find the next line. */
674 p = skip_whitespace (p1 + 1);
676 fatal ("specs file malformed after %d characters", p - buffer);
678 /* Find next blank line. */
679 while (*p1 && !(*p1 == '\n' && p1[1] == '\n')) p1++;
680 /* Specs end at the blank line and do not include the newline. */
681 spec = save_string (p, p1 - p);
684 /* Delete backslash-newline sequences from the spec. */
689 if (in[0] == '\\' && in[1] == '\n')
691 else if (in[0] == '#')
693 while (*in && *in != '\n') in++;
700 if (suffix[0] == '*')
702 if (! strcmp (suffix, "*link_command"))
703 link_command_spec = spec;
705 set_spec (suffix + 1, spec);
709 /* Add this pair to the vector. */
711 = ((struct compiler *)
712 xrealloc (compilers, (n_compilers + 2) * sizeof (struct compiler)));
713 compilers[n_compilers].suffix = suffix;
714 bzero (compilers[n_compilers].spec,
715 sizeof compilers[n_compilers].spec);
716 compilers[n_compilers].spec[0] = spec;
721 link_command_spec = spec;
724 if (link_command_spec == 0)
725 fatal ("spec file has no spec for linking");
734 /* A fully-blank line is a delimiter in the SPEC file and shouldn't
735 be considered whitespace. */
736 if (p[0] == '\n' && p[1] == '\n' && p[2] == '\n')
738 else if (*p == '\n' || *p == ' ' || *p == '\t')
742 while (*p != '\n') p++;
752 /* Structure to keep track of the specs that have been defined so far. These
753 are accessed using %(specname) or %[specname] in a compiler or link spec. */
757 char *name; /* Name of the spec. */
758 char *spec; /* The spec itself. */
759 struct spec_list *next; /* Next spec in linked list. */
762 /* List of specs that have been defined so far. */
764 static struct spec_list *specs = (struct spec_list *) 0;
766 /* Change the value of spec NAME to SPEC. If SPEC is empty, then the spec is
767 removed; If the spec starts with a + then SPEC is added to the end of the
771 set_spec (name, spec)
775 struct spec_list *sl;
778 /* See if the spec already exists */
779 for (sl = specs; sl; sl = sl->next)
780 if (strcmp (sl->name, name) == 0)
785 /* Not found - make it */
786 sl = (struct spec_list *) xmalloc (sizeof (struct spec_list));
787 sl->name = save_string (name, strlen (name));
788 sl->spec = save_string ("", 0);
794 if (name && spec[0] == '+' && isspace (spec[1]))
795 sl->spec = concat (old_spec, spec + 1, "");
797 sl->spec = save_string (spec, strlen (spec));
799 if (! strcmp (name, "asm"))
801 else if (! strcmp (name, "asm_final"))
802 asm_final_spec = sl->spec;
803 else if (! strcmp (name, "cc1"))
805 else if (! strcmp (name, "cc1plus"))
806 cc1plus_spec = sl->spec;
807 else if (! strcmp (name, "cpp"))
809 else if (! strcmp (name, "endfile"))
810 endfile_spec = sl->spec;
811 else if (! strcmp (name, "lib"))
813 else if (! strcmp (name, "link"))
814 link_spec = sl->spec;
815 else if (! strcmp (name, "predefines"))
816 cpp_predefines = sl->spec;
817 else if (! strcmp (name, "signed_char"))
818 signed_char_spec = sl->spec;
819 else if (! strcmp (name, "startfile"))
820 startfile_spec = sl->spec;
821 else if (! strcmp (name, "switches_need_spaces"))
822 switches_need_spaces = sl->spec;
823 else if (! strcmp (name, "cross_compile"))
824 cross_compile = atoi (sl->spec);
825 /* Free the old spec */
830 /* Accumulate a command (program name and args), and run it. */
832 /* Vector of pointers to arguments in the current line of specifications. */
834 static char **argbuf;
836 /* Number of elements allocated in argbuf. */
838 static int argbuf_length;
840 /* Number of elements in argbuf currently in use (containing args). */
842 static int argbuf_index;
844 /* This is the list of suffixes and codes (%g/%u/%U) and the associated
845 temp file. Used only if MKTEMP_EACH_FILE. */
847 static struct temp_name {
848 char *suffix; /* suffix associated with the code. */
849 int length; /* strlen (suffix). */
850 int unique; /* Indicates whether %g or %u/%U was used. */
851 char *filename; /* associated filename. */
852 int filename_length; /* strlen (filename). */
853 struct temp_name *next;
856 /* Number of commands executed so far. */
858 static int execution_count;
860 /* Number of commands that exited with a signal. */
862 static int signal_count;
864 /* Name with which this program was invoked. */
866 static char *programname;
868 /* Structures to keep track of prefixes to try when looking for files. */
872 char *prefix; /* String to prepend to the path. */
873 struct prefix_list *next; /* Next in linked list. */
874 int require_machine_suffix; /* Don't use without machine_suffix. */
875 /* 2 means try both machine_suffix and just_machine_suffix. */
876 int *used_flag_ptr; /* 1 if a file was found with this prefix. */
881 struct prefix_list *plist; /* List of prefixes to try */
882 int max_len; /* Max length of a prefix in PLIST */
883 char *name; /* Name of this list (used in config stuff) */
886 /* List of prefixes to try when looking for executables. */
888 static struct path_prefix exec_prefix = { 0, 0, "exec" };
890 /* List of prefixes to try when looking for startup (crt0) files. */
892 static struct path_prefix startfile_prefix = { 0, 0, "startfile" };
894 /* List of prefixes to try when looking for libraries. */
896 static struct path_prefix library_prefix = { 0, 0, "libraryfile" };
898 /* Suffix to attach to directories searched for commands.
899 This looks like `MACHINE/VERSION/'. */
901 static char *machine_suffix = 0;
903 /* Suffix to attach to directories searched for commands.
904 This is just `MACHINE/'. */
906 static char *just_machine_suffix = 0;
908 /* Adjusted value of GCC_EXEC_PREFIX envvar. */
910 static char *gcc_exec_prefix;
912 /* Default prefixes to attach to command names. */
914 #ifdef CROSS_COMPILE /* Don't use these prefixes for a cross compiler. */
915 #undef MD_EXEC_PREFIX
916 #undef MD_STARTFILE_PREFIX
917 #undef MD_STARTFILE_PREFIX_1
920 #ifndef STANDARD_EXEC_PREFIX
921 #define STANDARD_EXEC_PREFIX "/usr/local/lib/gcc-lib/"
922 #endif /* !defined STANDARD_EXEC_PREFIX */
924 static char *standard_exec_prefix = STANDARD_EXEC_PREFIX;
925 static char *standard_exec_prefix_1 = "/usr/lib/gcc/";
926 #ifdef MD_EXEC_PREFIX
927 static char *md_exec_prefix = MD_EXEC_PREFIX;
930 #ifndef STANDARD_STARTFILE_PREFIX
931 #define STANDARD_STARTFILE_PREFIX "/usr/local/lib/"
932 #endif /* !defined STANDARD_STARTFILE_PREFIX */
934 #ifdef MD_STARTFILE_PREFIX
935 static char *md_startfile_prefix = MD_STARTFILE_PREFIX;
937 #ifdef MD_STARTFILE_PREFIX_1
938 static char *md_startfile_prefix_1 = MD_STARTFILE_PREFIX_1;
940 static char *standard_startfile_prefix = STANDARD_STARTFILE_PREFIX;
941 static char *standard_startfile_prefix_1 = "/lib/";
942 static char *standard_startfile_prefix_2 = "/usr/lib/";
944 #ifndef TOOLDIR_BASE_PREFIX
945 #define TOOLDIR_BASE_PREFIX "/usr/local/"
947 static char *tooldir_base_prefix = TOOLDIR_BASE_PREFIX;
948 static char *tooldir_prefix;
950 /* Clear out the vector of arguments (after a command is executed). */
958 /* Add one argument to the vector at the end.
959 This is done when a space is seen or at the end of the line.
960 If DELETE_ALWAYS is nonzero, the arg is a filename
961 and the file should be deleted eventually.
962 If DELETE_FAILURE is nonzero, the arg is a filename
963 and the file should be deleted if this compilation fails. */
966 store_arg (arg, delete_always, delete_failure)
968 int delete_always, delete_failure;
970 if (argbuf_index + 1 == argbuf_length)
972 argbuf = (char **) xrealloc (argbuf, (argbuf_length *= 2) * sizeof (char *));
975 argbuf[argbuf_index++] = arg;
976 argbuf[argbuf_index] = 0;
978 if (delete_always || delete_failure)
979 record_temp_file (arg, delete_always, delete_failure);
982 /* Record the names of temporary files we tell compilers to write,
983 and delete them at the end of the run. */
985 /* This is the common prefix we use to make temp file names.
986 It is chosen once for each run of this program.
987 It is substituted into a spec by %g.
988 Thus, all temp file names contain this prefix.
989 In practice, all temp file names start with this prefix.
991 This prefix comes from the envvar TMPDIR if it is defined;
992 otherwise, from the P_tmpdir macro if that is defined;
993 otherwise, in /usr/tmp or /tmp. */
995 static char *temp_filename;
997 /* Length of the prefix. */
999 static int temp_filename_length;
1001 /* Define the list of temporary files to delete. */
1006 struct temp_file *next;
1009 /* Queue of files to delete on success or failure of compilation. */
1010 static struct temp_file *always_delete_queue;
1011 /* Queue of files to delete on failure of compilation. */
1012 static struct temp_file *failure_delete_queue;
1014 /* Record FILENAME as a file to be deleted automatically.
1015 ALWAYS_DELETE nonzero means delete it if all compilation succeeds;
1016 otherwise delete it in any case.
1017 FAIL_DELETE nonzero means delete it if a compilation step fails;
1018 otherwise delete it in any case. */
1021 record_temp_file (filename, always_delete, fail_delete)
1026 register char *name;
1027 name = xmalloc (strlen (filename) + 1);
1028 strcpy (name, filename);
1032 register struct temp_file *temp;
1033 for (temp = always_delete_queue; temp; temp = temp->next)
1034 if (! strcmp (name, temp->name))
1036 temp = (struct temp_file *) xmalloc (sizeof (struct temp_file));
1037 temp->next = always_delete_queue;
1039 always_delete_queue = temp;
1045 register struct temp_file *temp;
1046 for (temp = failure_delete_queue; temp; temp = temp->next)
1047 if (! strcmp (name, temp->name))
1049 temp = (struct temp_file *) xmalloc (sizeof (struct temp_file));
1050 temp->next = failure_delete_queue;
1052 failure_delete_queue = temp;
1057 /* Delete all the temporary files whose names we previously recorded. */
1060 delete_temp_files ()
1062 register struct temp_file *temp;
1064 for (temp = always_delete_queue; temp; temp = temp->next)
1068 printf ("Delete %s? (y or n) ", temp->name);
1072 while (getchar () != '\n') ;
1073 if (i == 'y' || i == 'Y')
1077 if (stat (temp->name, &st) >= 0)
1079 /* Delete only ordinary files. */
1080 if (S_ISREG (st.st_mode))
1081 if (unlink (temp->name) < 0)
1083 perror_with_name (temp->name);
1088 always_delete_queue = 0;
1091 /* Delete all the files to be deleted on error. */
1094 delete_failure_queue ()
1096 register struct temp_file *temp;
1098 for (temp = failure_delete_queue; temp; temp = temp->next)
1102 printf ("Delete %s? (y or n) ", temp->name);
1106 while (getchar () != '\n') ;
1107 if (i == 'y' || i == 'Y')
1110 if (unlink (temp->name) < 0)
1112 perror_with_name (temp->name);
1118 clear_failure_queue ()
1120 failure_delete_queue = 0;
1123 /* Compute a string to use as the base of all temporary file names.
1124 It is substituted for %g. */
1129 char *base = getenv ("TMPDIR");
1132 if (base == (char *)0)
1135 if (access (P_tmpdir, R_OK | W_OK) == 0)
1138 if (base == (char *)0)
1140 if (access ("/usr/tmp", R_OK | W_OK) == 0)
1147 len = strlen (base);
1148 temp_filename = xmalloc (len + sizeof("/ccXXXXXX"));
1149 strcpy (temp_filename, base);
1150 if (len > 0 && temp_filename[len-1] != '/')
1151 temp_filename[len++] = '/';
1152 strcpy (temp_filename + len, "ccXXXXXX");
1154 mktemp (temp_filename);
1155 temp_filename_length = strlen (temp_filename);
1156 if (temp_filename_length == 0)
1161 /* Routine to add variables to the environment. We do this to pass
1162 the pathname of the gcc driver, and the directories search to the
1163 collect2 program, which is being run as ld. This way, we can be
1164 sure of executing the right compiler when collect2 wants to build
1165 constructors and destructors. Since the environment variables we
1166 use come from an obstack, we don't have to worry about allocating
1174 #ifndef VMS /* nor about VMS */
1176 extern char **environ;
1177 char **old_environ = environ;
1181 int str_len = strlen (str);
1185 while ((ch = *p++) != '\0' && ch != '=')
1191 /* Search for replacing an existing environment variable, and
1192 count the number of total environment variables. */
1193 for (envp = old_environ; *envp; envp++)
1196 if (!strncmp (str, *envp, name_len))
1203 /* Add a new environment variable */
1204 environ = (char **) xmalloc (sizeof (char *) * (num_envs+2));
1206 bcopy (old_environ, environ+1, sizeof (char *) * (num_envs+1));
1211 #endif /* HAVE_PUTENV */
1214 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables for collect. */
1217 putenv_from_prefixes (paths, env_var)
1218 struct path_prefix *paths;
1221 int suffix_len = (machine_suffix) ? strlen (machine_suffix) : 0;
1223 = (just_machine_suffix) ? strlen (just_machine_suffix) : 0;
1224 int first_time = TRUE;
1225 struct prefix_list *pprefix;
1227 obstack_grow (&collect_obstack, env_var, strlen (env_var));
1229 for (pprefix = paths->plist; pprefix != 0; pprefix = pprefix->next)
1231 int len = strlen (pprefix->prefix);
1236 obstack_1grow (&collect_obstack, PATH_SEPARATOR);
1239 obstack_grow (&collect_obstack, pprefix->prefix, len);
1240 obstack_grow (&collect_obstack, machine_suffix, suffix_len);
1243 if (just_machine_suffix && pprefix->require_machine_suffix == 2)
1246 obstack_1grow (&collect_obstack, PATH_SEPARATOR);
1249 obstack_grow (&collect_obstack, pprefix->prefix, len);
1250 obstack_grow (&collect_obstack, just_machine_suffix,
1254 if (!pprefix->require_machine_suffix)
1257 obstack_1grow (&collect_obstack, PATH_SEPARATOR);
1260 obstack_grow (&collect_obstack, pprefix->prefix, len);
1263 obstack_1grow (&collect_obstack, '\0');
1264 putenv (obstack_finish (&collect_obstack));
1268 /* Search for NAME using the prefix list PREFIXES. MODE is passed to
1269 access to check permissions.
1270 Return 0 if not found, otherwise return its name, allocated with malloc. */
1273 find_a_file (pprefix, name, mode)
1274 struct path_prefix *pprefix;
1279 char *file_suffix = ((mode & X_OK) != 0 ? EXECUTABLE_SUFFIX : "");
1280 struct prefix_list *pl;
1281 int len = pprefix->max_len + strlen (name) + strlen (file_suffix) + 1;
1284 len += strlen (machine_suffix);
1286 temp = xmalloc (len);
1288 /* Determine the filename to execute (special case for absolute paths). */
1292 if (access (name, mode))
1294 strcpy (temp, name);
1299 for (pl = pprefix->plist; pl; pl = pl->next)
1303 strcpy (temp, pl->prefix);
1304 strcat (temp, machine_suffix);
1305 strcat (temp, name);
1306 if (access (temp, mode) == 0)
1308 if (pl->used_flag_ptr != 0)
1309 *pl->used_flag_ptr = 1;
1312 /* Some systems have a suffix for executable files.
1313 So try appending that. */
1314 if (file_suffix[0] != 0)
1316 strcat (temp, file_suffix);
1317 if (access (temp, mode) == 0)
1319 if (pl->used_flag_ptr != 0)
1320 *pl->used_flag_ptr = 1;
1325 /* Certain prefixes are tried with just the machine type,
1326 not the version. This is used for finding as, ld, etc. */
1327 if (just_machine_suffix && pl->require_machine_suffix == 2)
1329 strcpy (temp, pl->prefix);
1330 strcat (temp, just_machine_suffix);
1331 strcat (temp, name);
1332 if (access (temp, mode) == 0)
1334 if (pl->used_flag_ptr != 0)
1335 *pl->used_flag_ptr = 1;
1338 /* Some systems have a suffix for executable files.
1339 So try appending that. */
1340 if (file_suffix[0] != 0)
1342 strcat (temp, file_suffix);
1343 if (access (temp, mode) == 0)
1345 if (pl->used_flag_ptr != 0)
1346 *pl->used_flag_ptr = 1;
1351 /* Certain prefixes can't be used without the machine suffix
1352 when the machine or version is explicitly specified. */
1353 if (!pl->require_machine_suffix)
1355 strcpy (temp, pl->prefix);
1356 strcat (temp, name);
1357 if (access (temp, mode) == 0)
1359 if (pl->used_flag_ptr != 0)
1360 *pl->used_flag_ptr = 1;
1363 /* Some systems have a suffix for executable files.
1364 So try appending that. */
1365 if (file_suffix[0] != 0)
1367 strcat (temp, file_suffix);
1368 if (access (temp, mode) == 0)
1370 if (pl->used_flag_ptr != 0)
1371 *pl->used_flag_ptr = 1;
1382 /* Add an entry for PREFIX in PLIST. If FIRST is set, it goes
1383 at the start of the list, otherwise it goes at the end.
1385 If WARN is nonzero, we will warn if no file is found
1386 through this prefix. WARN should point to an int
1387 which will be set to 1 if this entry is used.
1389 REQUIRE_MACHINE_SUFFIX is 1 if this prefix can't be used without
1390 the complete value of machine_suffix.
1391 2 means try both machine_suffix and just_machine_suffix. */
1394 add_prefix (pprefix, prefix, first, require_machine_suffix, warn)
1395 struct path_prefix *pprefix;
1398 int require_machine_suffix;
1401 struct prefix_list *pl, **prev;
1404 if (!first && pprefix->plist)
1406 for (pl = pprefix->plist; pl->next; pl = pl->next)
1411 prev = &pprefix->plist;
1413 /* Keep track of the longest prefix */
1415 len = strlen (prefix);
1416 if (len > pprefix->max_len)
1417 pprefix->max_len = len;
1419 pl = (struct prefix_list *) xmalloc (sizeof (struct prefix_list));
1420 pl->prefix = save_string (prefix, len);
1421 pl->require_machine_suffix = require_machine_suffix;
1422 pl->used_flag_ptr = warn;
1429 pl->next = (struct prefix_list *) 0;
1433 /* Print warnings for any prefixes in the list PPREFIX that were not used. */
1436 unused_prefix_warnings (pprefix)
1437 struct path_prefix *pprefix;
1439 struct prefix_list *pl = pprefix->plist;
1443 if (pl->used_flag_ptr != 0 && !*pl->used_flag_ptr)
1445 error ("file path prefix `%s' never used",
1447 /* Prevent duplicate warnings. */
1448 *pl->used_flag_ptr = 1;
1454 /* Get rid of all prefixes built up so far in *PLISTP. */
1457 free_path_prefix (pprefix)
1458 struct path_prefix *pprefix;
1460 struct prefix_list *pl = pprefix->plist;
1461 struct prefix_list *temp;
1467 free (temp->prefix);
1468 free ((char *) temp);
1470 pprefix->plist = (struct prefix_list *) 0;
1473 /* stdin file number. */
1474 #define STDIN_FILE_NO 0
1476 /* stdout file number. */
1477 #define STDOUT_FILE_NO 1
1479 /* value of `pipe': port index for reading. */
1482 /* value of `pipe': port index for writing. */
1483 #define WRITE_PORT 1
1485 /* Pipe waiting from last process, to be used as input for the next one.
1486 Value is STDIN_FILE_NO if no pipe is waiting
1487 (i.e. the next command is the first of a group). */
1489 static int last_pipe_input;
1491 /* Fork one piped subcommand. FUNC is the system call to use
1492 (either execv or execvp). ARGV is the arg vector to use.
1493 NOT_LAST is nonzero if this is not the last subcommand
1494 (i.e. its output should be piped to the next one.) */
1499 /* Declare these to avoid compilation error. They won't be called. */
1500 int execv(const char *a, const char **b){}
1501 int execvp(const char *a, const char **b){}
1504 pexecute (search_flag, program, argv, not_last)
1514 scmd = (char *)malloc (strlen (program) + strlen (temp_filename) + 6);
1515 sprintf (scmd, "%s @%s.gp", program, temp_filename);
1516 argfile = fopen (scmd+strlen (program) + 2, "w");
1518 pfatal_with_name (scmd + strlen (program) + 2);
1520 for (i=1; argv[i]; i++)
1523 for (cp = argv[i]; *cp; cp++)
1525 if (*cp == '"' || *cp == '\'' || *cp == '\\' || isspace (*cp))
1526 fputc ('\\', argfile);
1527 fputc (*cp, argfile);
1529 fputc ('\n', argfile);
1535 remove (scmd + strlen (program) + 2);
1539 #else /* not __MSDOS__ */
1542 pexecute (search_flag, program, argv, not_last)
1548 int (*func)() = (search_flag ? execv : execvp);
1551 int input_desc = last_pipe_input;
1552 int output_desc = STDOUT_FILE_NO;
1553 int retries, sleep_interval;
1555 /* If this isn't the last process, make a pipe for its output,
1556 and record it as waiting to be the input to the next process. */
1560 if (pipe (pdes) < 0)
1561 pfatal_with_name ("pipe");
1562 output_desc = pdes[WRITE_PORT];
1563 last_pipe_input = pdes[READ_PORT];
1566 last_pipe_input = STDIN_FILE_NO;
1568 /* Fork a subprocess; wait and retry if it fails. */
1570 for (retries = 0; retries < 4; retries++)
1575 sleep (sleep_interval);
1576 sleep_interval *= 2;
1583 pfatal_with_name ("fork");
1585 pfatal_with_name ("vfork");
1591 /* Move the input and output pipes into place, if nec. */
1592 if (input_desc != STDIN_FILE_NO)
1594 close (STDIN_FILE_NO);
1598 if (output_desc != STDOUT_FILE_NO)
1600 close (STDOUT_FILE_NO);
1602 close (output_desc);
1605 /* Close the parent's descs that aren't wanted here. */
1606 if (last_pipe_input != STDIN_FILE_NO)
1607 close (last_pipe_input);
1609 /* Exec the program. */
1610 (*func) (program, argv);
1611 perror_exec (program);
1617 /* In the parent, after forking.
1618 Close the descriptors that we made for this child. */
1619 if (input_desc != STDIN_FILE_NO)
1621 if (output_desc != STDOUT_FILE_NO)
1622 close (output_desc);
1624 /* Return child's process number. */
1629 #endif /* not __MSDOS__ */
1633 pexecute (search_flag, program, argv, not_last)
1639 return (search_flag ? spawnv : spawnvp) (1, program, argv);
1641 #endif /* not OS2 */
1643 /* Execute the command specified by the arguments on the current line of spec.
1644 When using pipes, this includes several piped-together commands
1645 with `|' between them.
1647 Return 0 if successful, -1 if failed. */
1653 int n_commands; /* # of command. */
1657 char *prog; /* program name. */
1658 char **argv; /* vector of args. */
1659 int pid; /* pid of process for this command. */
1662 struct command *commands; /* each command buffer with above info. */
1664 /* Count # of piped commands. */
1665 for (n_commands = 1, i = 0; i < argbuf_index; i++)
1666 if (strcmp (argbuf[i], "|") == 0)
1669 /* Get storage for each command. */
1671 = (struct command *) alloca (n_commands * sizeof (struct command));
1673 /* Split argbuf into its separate piped processes,
1674 and record info about each one.
1675 Also search for the programs that are to be run. */
1677 commands[0].prog = argbuf[0]; /* first command. */
1678 commands[0].argv = &argbuf[0];
1679 string = find_a_file (&exec_prefix, commands[0].prog, X_OK);
1681 commands[0].argv[0] = string;
1683 for (n_commands = 1, i = 0; i < argbuf_index; i++)
1684 if (strcmp (argbuf[i], "|") == 0)
1685 { /* each command. */
1687 fatal ("-pipe not supported under MS-DOS");
1689 argbuf[i] = 0; /* termination of command args. */
1690 commands[n_commands].prog = argbuf[i + 1];
1691 commands[n_commands].argv = &argbuf[i + 1];
1692 string = find_a_file (&exec_prefix, commands[n_commands].prog, X_OK);
1694 commands[n_commands].argv[0] = string;
1698 argbuf[argbuf_index] = 0;
1700 /* If -v, print what we are about to do, and maybe query. */
1704 /* Print each piped command as a separate line. */
1705 for (i = 0; i < n_commands ; i++)
1709 for (j = commands[i].argv; *j; j++)
1710 fprintf (stderr, " %s", *j);
1712 /* Print a pipe symbol after all but the last command. */
1713 if (i + 1 != n_commands)
1714 fprintf (stderr, " |");
1715 fprintf (stderr, "\n");
1719 fprintf (stderr, "\nGo ahead? (y or n) ");
1723 while (getchar () != '\n') ;
1724 if (i != 'y' && i != 'Y')
1729 /* Run each piped subprocess. */
1731 last_pipe_input = STDIN_FILE_NO;
1732 for (i = 0; i < n_commands; i++)
1734 char *string = commands[i].argv[0];
1736 commands[i].pid = pexecute (string != commands[i].prog,
1737 string, commands[i].argv,
1738 i + 1 < n_commands);
1740 if (string != commands[i].prog)
1746 /* Wait for all the subprocesses to finish.
1747 We don't care what order they finish in;
1748 we know that N_COMMANDS waits will get them all. */
1753 for (i = 0; i < n_commands; i++)
1760 status = pid = commands[i].pid;
1762 pid = wait (&status);
1770 for (j = 0; j < n_commands; j++)
1771 if (commands[j].pid == pid)
1772 prog = commands[j].prog;
1774 if ((status & 0x7F) != 0)
1776 fatal ("Internal compiler error: program %s got fatal signal %d",
1777 prog, (status & 0x7F));
1780 if (((status & 0xFF00) >> 8) >= MIN_FATAL_STATUS)
1788 /* Find all the switches given to us
1789 and make a vector describing them.
1790 The elements of the vector are strings, one per switch given.
1791 If a switch uses following arguments, then the `part1' field
1792 is the switch itself and the `args' field
1793 is a null-terminated vector containing the following arguments.
1794 The `valid' field is nonzero if any spec has looked at this switch;
1795 if it remains zero at the end of the run, it must be meaningless. */
1804 static struct switchstr *switches;
1806 static int n_switches;
1814 /* Also a vector of input files specified. */
1816 static struct infile *infiles;
1818 static int n_infiles;
1820 /* And a vector of corresponding output files is made up later. */
1822 static char **outfiles;
1824 /* Create the vector `switches' and its contents.
1825 Store its length in `n_switches'. */
1828 process_command (argc, argv)
1834 char *spec_lang = 0;
1835 int last_language_n_infiles;
1837 gcc_exec_prefix = getenv ("GCC_EXEC_PREFIX");
1842 /* Default for -V is our version number, ending at first space. */
1843 spec_version = save_string (version_string, strlen (version_string));
1844 for (temp = spec_version; *temp && *temp != ' '; temp++);
1845 if (*temp) *temp = '\0';
1847 /* Set up the default search paths. */
1849 if (gcc_exec_prefix)
1851 add_prefix (&exec_prefix, gcc_exec_prefix, 0, 0, NULL_PTR);
1852 add_prefix (&startfile_prefix, gcc_exec_prefix, 0, 0, NULL_PTR);
1855 /* COMPILER_PATH and LIBRARY_PATH have values
1856 that are lists of directory names with colons. */
1858 temp = getenv ("COMPILER_PATH");
1861 char *startp, *endp;
1862 char *nstore = (char *) alloca (strlen (temp) + 3);
1864 startp = endp = temp;
1867 if (*endp == PATH_SEPARATOR || *endp == 0)
1869 strncpy (nstore, startp, endp-startp);
1872 strcpy (nstore, "./");
1874 else if (endp[-1] != '/')
1876 nstore[endp-startp] = '/';
1877 nstore[endp-startp+1] = 0;
1880 nstore[endp-startp] = 0;
1881 add_prefix (&exec_prefix, nstore, 0, 0, NULL_PTR);
1884 endp = startp = endp + 1;
1891 temp = getenv ("LIBRARY_PATH");
1894 char *startp, *endp;
1895 char *nstore = (char *) alloca (strlen (temp) + 3);
1897 startp = endp = temp;
1900 if (*endp == PATH_SEPARATOR || *endp == 0)
1902 strncpy (nstore, startp, endp-startp);
1905 strcpy (nstore, "./");
1907 else if (endp[-1] != '/')
1909 nstore[endp-startp] = '/';
1910 nstore[endp-startp+1] = 0;
1913 nstore[endp-startp] = 0;
1914 add_prefix (&startfile_prefix, nstore, 0, 0, NULL_PTR);
1915 /* Make separate list of dirs that came from LIBRARY_PATH. */
1916 add_prefix (&library_prefix, nstore, 0, 0, NULL_PTR);
1919 endp = startp = endp + 1;
1926 /* Use LPATH like LIBRARY_PATH (for the CMU build program). */
1927 temp = getenv ("LPATH");
1930 char *startp, *endp;
1931 char *nstore = (char *) alloca (strlen (temp) + 3);
1933 startp = endp = temp;
1936 if (*endp == PATH_SEPARATOR || *endp == 0)
1938 strncpy (nstore, startp, endp-startp);
1941 strcpy (nstore, "./");
1943 else if (endp[-1] != '/')
1945 nstore[endp-startp] = '/';
1946 nstore[endp-startp+1] = 0;
1949 nstore[endp-startp] = 0;
1950 add_prefix (&startfile_prefix, nstore, 0, 0, NULL_PTR);
1951 /* Make separate list of dirs that came from LIBRARY_PATH. */
1952 add_prefix (&library_prefix, nstore, 0, 0, NULL_PTR);
1955 endp = startp = endp + 1;
1962 /* Scan argv twice. Here, the first time, just count how many switches
1963 there will be in their vector, and how many input files in theirs.
1964 Here we also parse the switches that cc itself uses (e.g. -v). */
1966 for (i = 1; i < argc; i++)
1968 if (! strcmp (argv[i], "-dumpspecs"))
1970 printf ("*asm:\n%s\n\n", asm_spec);
1971 printf ("*asm_final:\n%s\n\n", asm_final_spec);
1972 printf ("*cpp:\n%s\n\n", cpp_spec);
1973 printf ("*cc1:\n%s\n\n", cc1_spec);
1974 printf ("*cc1plus:\n%s\n\n", cc1plus_spec);
1975 printf ("*endfile:\n%s\n\n", endfile_spec);
1976 printf ("*link:\n%s\n\n", link_spec);
1977 printf ("*lib:\n%s\n\n", lib_spec);
1978 printf ("*startfile:\n%s\n\n", startfile_spec);
1979 printf ("*switches_need_spaces:\n%s\n\n", switches_need_spaces);
1980 printf ("*signed_char:\n%s\n\n", signed_char_spec);
1981 printf ("*predefines:\n%s\n\n", cpp_predefines);
1982 printf ("*cross_compile:\n%d\n\n", cross_compile);
1986 else if (! strcmp (argv[i], "-dumpversion"))
1988 printf ("%s\n", version_string);
1991 else if (! strcmp (argv[i], "-print-libgcc-file-name"))
1993 print_libgcc_file_name = 1;
1995 else if (! strcmp (argv[i], "-Xlinker"))
1997 /* Pass the argument of this option to the linker when we link. */
2000 fatal ("argument to `-Xlinker' is missing");
2003 if (!linker_options)
2005 = (char **) xmalloc (n_linker_options * sizeof (char **));
2008 = (char **) xrealloc (linker_options,
2009 n_linker_options * sizeof (char **));
2011 linker_options[n_linker_options - 1] = argv[++i];
2013 else if (! strncmp (argv[i], "-Wl,", 4))
2016 /* Pass the rest of this option to the linker when we link. */
2019 if (!linker_options)
2021 = (char **) xmalloc (n_linker_options * sizeof (char **));
2024 = (char **) xrealloc (linker_options,
2025 n_linker_options * sizeof (char **));
2027 /* Split the argument at commas. */
2029 for (j = 4; argv[i][j]; j++)
2030 if (argv[i][j] == ',')
2032 linker_options[n_linker_options - 1]
2033 = save_string (argv[i] + prev, j - prev);
2036 = (char **) xrealloc (linker_options,
2037 n_linker_options * sizeof (char **));
2040 /* Record the part after the last comma. */
2041 linker_options[n_linker_options - 1] = argv[i] + prev;
2043 else if (! strncmp (argv[i], "-Wa,", 4))
2046 /* Pass the rest of this option to the assembler. */
2048 n_assembler_options++;
2049 if (!assembler_options)
2051 = (char **) xmalloc (n_assembler_options * sizeof (char **));
2054 = (char **) xrealloc (assembler_options,
2055 n_assembler_options * sizeof (char **));
2057 /* Split the argument at commas. */
2059 for (j = 4; argv[i][j]; j++)
2060 if (argv[i][j] == ',')
2062 assembler_options[n_assembler_options - 1]
2063 = save_string (argv[i] + prev, j - prev);
2064 n_assembler_options++;
2066 = (char **) xrealloc (assembler_options,
2067 n_assembler_options * sizeof (char **));
2070 /* Record the part after the last comma. */
2071 assembler_options[n_assembler_options - 1] = argv[i] + prev;
2073 else if (argv[i][0] == '+' && argv[i][1] == 'e')
2074 /* Compensate for the +e options to the C++ front-end. */
2076 else if (argv[i][0] == '-' && argv[i][1] != 0 && argv[i][1] != 'l')
2078 register char *p = &argv[i][1];
2079 register int c = *p;
2084 if (p[1] == 0 && i + 1 == argc)
2085 fatal ("argument to `-b' is missing");
2087 spec_machine = argv[++i];
2089 spec_machine = p + 1;
2094 int *temp = (int *) xmalloc (sizeof (int));
2096 if (p[1] == 0 && i + 1 == argc)
2097 fatal ("argument to `-B' is missing");
2102 add_prefix (&exec_prefix, value, 1, 0, temp);
2103 add_prefix (&startfile_prefix, value, 1, 0, temp);
2107 case 'v': /* Print our subcommands and print versions. */
2109 /* If they do anything other than exactly `-v', don't set
2110 verbose_flag; rather, continue on to give the error. */
2117 if (p[1] == 0 && i + 1 == argc)
2118 fatal ("argument to `-V' is missing");
2120 spec_version = argv[++i];
2122 spec_version = p + 1;
2126 if (!strcmp (p, "save-temps"))
2128 save_temps_flag = 1;
2135 if (SWITCH_TAKES_ARG (c) > (p[1] != 0))
2136 i += SWITCH_TAKES_ARG (c) - (p[1] != 0);
2137 else if (WORD_SWITCH_TAKES_ARG (p))
2138 i += WORD_SWITCH_TAKES_ARG (p);
2145 tooldir_prefix = concat (tooldir_base_prefix, spec_machine, "/");
2147 /* If tooldir is relative, base it on exec_prefix. A relative
2148 tooldir lets us move the installed tree as a unit. */
2150 if (*tooldir_prefix != '/')
2152 if (gcc_exec_prefix)
2153 tooldir_prefix = concat (concat (gcc_exec_prefix, spec_machine, "/"),
2154 concat (spec_version, "/", tooldir_prefix),
2157 tooldir_prefix = concat (concat (standard_exec_prefix, spec_machine, "/"),
2158 concat (spec_version, "/", tooldir_prefix),
2163 /* Set up the search paths before we go looking for config files. */
2165 /* These come before the md prefixes so that we will find gcc's subcommands
2166 (such as cpp) rather than those of the host system. */
2167 /* Use 2 as fourth arg meaning try just the machine as a suffix,
2168 as well as trying the machine and the version. */
2169 add_prefix (&exec_prefix, standard_exec_prefix, 0, 2, NULL_PTR);
2170 add_prefix (&exec_prefix, standard_exec_prefix_1, 0, 2, NULL_PTR);
2172 add_prefix (&startfile_prefix, standard_exec_prefix, 0, 1, NULL_PTR);
2173 add_prefix (&startfile_prefix, standard_exec_prefix_1, 0, 1, NULL_PTR);
2175 add_prefix (&exec_prefix, concat (tooldir_prefix, "bin", "/"),
2177 add_prefix (&startfile_prefix, concat (tooldir_prefix, "lib", "/"),
2180 /* More prefixes are enabled in main, after we read the specs file
2181 and determine whether this is cross-compilation or not. */
2184 /* Then create the space for the vectors and scan again. */
2186 switches = ((struct switchstr *)
2187 xmalloc ((n_switches + 1) * sizeof (struct switchstr)));
2188 infiles = (struct infile *) xmalloc ((n_infiles + 1) * sizeof (struct infile));
2191 last_language_n_infiles = -1;
2193 /* This, time, copy the text of each switch and store a pointer
2194 to the copy in the vector of switches.
2195 Store all the infiles in their vector. */
2197 for (i = 1; i < argc; i++)
2199 /* Just skip the switches that were handled by the preceding loop. */
2200 if (!strcmp (argv[i], "-Xlinker"))
2202 else if (! strncmp (argv[i], "-Wl,", 4))
2204 else if (! strncmp (argv[i], "-Wa,", 4))
2206 else if (! strcmp (argv[i], "-print-libgcc-file-name"))
2208 else if (argv[i][0] == '+' && argv[i][1] == 'e')
2210 /* Compensate for the +e options to the C++ front-end;
2211 they're there simply for cfront call-compatibility. We do
2212 some magic in default_compilers to pass them down properly.
2213 Note we deliberately start at the `+' here, to avoid passing
2214 -e0 or -e1 down into the linker. */
2215 switches[n_switches].part1 = &argv[i][0];
2216 switches[n_switches].args = 0;
2217 switches[n_switches].valid = 0;
2220 else if (argv[i][0] == '-' && argv[i][1] != 0 && argv[i][1] != 'l')
2222 register char *p = &argv[i][1];
2223 register int c = *p;
2225 if (c == 'B' || c == 'b' || c == 'V')
2227 /* Skip a separate arg, if any. */
2234 if (p[1] == 0 && i + 1 == argc)
2235 fatal ("argument to `-x' is missing");
2237 spec_lang = argv[++i];
2240 if (! strcmp (spec_lang, "none"))
2241 /* Suppress the warning if -xnone comes after the last input file,
2242 because alternate command interfaces like g++ might find it
2243 useful to place -xnone after each input file. */
2246 last_language_n_infiles = n_infiles;
2249 switches[n_switches].part1 = p;
2250 /* Deal with option arguments in separate argv elements. */
2251 if ((SWITCH_TAKES_ARG (c) > (p[1] != 0))
2252 || WORD_SWITCH_TAKES_ARG (p)) {
2254 int n_args = WORD_SWITCH_TAKES_ARG (p);
2257 /* Count only the option arguments in separate argv elements. */
2258 n_args = SWITCH_TAKES_ARG (c) - (p[1] != 0);
2260 if (i + n_args >= argc)
2261 fatal ("argument to `-%s' is missing", p);
2262 switches[n_switches].args
2263 = (char **) xmalloc ((n_args + 1) * sizeof (char *));
2265 switches[n_switches].args[j++] = argv[++i];
2266 /* Null-terminate the vector. */
2267 switches[n_switches].args[j] = 0;
2268 } else if (*switches_need_spaces != 0 && (c == 'o' || c == 'L')) {
2269 /* On some systems, ld cannot handle -o or -L without space.
2270 So split the -o or -L from its argument. */
2271 switches[n_switches].part1 = (c == 'o' ? "o" : "L");
2272 switches[n_switches].args = (char **) xmalloc (2 * sizeof (char *));
2273 switches[n_switches].args[0] = xmalloc (strlen (p));
2274 strcpy (switches[n_switches].args[0], &p[1]);
2275 switches[n_switches].args[1] = 0;
2277 switches[n_switches].args = 0;
2278 switches[n_switches].valid = 0;
2279 /* This is always valid, since gcc.c itself understands it. */
2280 if (!strcmp (p, "save-temps"))
2281 switches[n_switches].valid = 1;
2286 if ((argv[i][0] != '-' || argv[i][0] != 'l')
2287 && access (argv[i], R_OK) < 0)
2289 perror_with_name (argv[i]);
2294 infiles[n_infiles].language = spec_lang;
2295 infiles[n_infiles++].name = argv[i];
2300 if (n_infiles == last_language_n_infiles)
2301 error ("Warning: `-x %s' after last input file has no effect", spec_lang);
2303 switches[n_switches].part1 = 0;
2304 infiles[n_infiles].name = 0;
2306 /* If we have a GCC_EXEC_PREFIX envvar, modify it for cpp's sake. */
2307 if (gcc_exec_prefix)
2309 temp = (char *) xmalloc (strlen (gcc_exec_prefix) + strlen (spec_version)
2310 + strlen (spec_machine) + 3);
2311 strcpy (temp, gcc_exec_prefix);
2312 strcat (temp, spec_machine);
2314 strcat (temp, spec_version);
2316 gcc_exec_prefix = temp;
2320 /* Process a spec string, accumulating and running commands. */
2322 /* These variables describe the input file name.
2323 input_file_number is the index on outfiles of this file,
2324 so that the output file name can be stored for later use by %o.
2325 input_basename is the start of the part of the input file
2326 sans all directory names, and basename_length is the number
2327 of characters starting there excluding the suffix .c or whatever. */
2329 static char *input_filename;
2330 static int input_file_number;
2331 static int input_filename_length;
2332 static int basename_length;
2333 static char *input_basename;
2334 static char *input_suffix;
2336 /* These are variables used within do_spec and do_spec_1. */
2338 /* Nonzero if an arg has been started and not yet terminated
2339 (with space, tab or newline). */
2340 static int arg_going;
2342 /* Nonzero means %d or %g has been seen; the next arg to be terminated
2343 is a temporary file name. */
2344 static int delete_this_arg;
2346 /* Nonzero means %w has been seen; the next arg to be terminated
2347 is the output file name of this compilation. */
2348 static int this_is_output_file;
2350 /* Nonzero means %s has been seen; the next arg to be terminated
2351 is the name of a library file and we should try the standard
2352 search dirs for it. */
2353 static int this_is_library_file;
2355 /* Nonzero means that the input of this command is coming from a pipe. */
2356 static int input_from_pipe;
2358 /* Process the spec SPEC and run the commands specified therein.
2359 Returns 0 if the spec is successfully processed; -1 if failed. */
2369 delete_this_arg = 0;
2370 this_is_output_file = 0;
2371 this_is_library_file = 0;
2372 input_from_pipe = 0;
2374 value = do_spec_1 (spec, 0, NULL_PTR);
2376 /* Force out any unfinished command.
2377 If -pipe, this forces out the last command if it ended in `|'. */
2380 if (argbuf_index > 0 && !strcmp (argbuf[argbuf_index - 1], "|"))
2383 if (argbuf_index > 0)
2390 /* Process the sub-spec SPEC as a portion of a larger spec.
2391 This is like processing a whole spec except that we do
2392 not initialize at the beginning and we do not supply a
2393 newline by default at the end.
2394 INSWITCH nonzero means don't process %-sequences in SPEC;
2395 in this case, % is treated as an ordinary character.
2396 This is used while substituting switches.
2397 INSWITCH nonzero also causes SPC not to terminate an argument.
2399 Value is zero unless a line was finished
2400 and the command on that line reported an error. */
2403 do_spec_1 (spec, inswitch, soft_matched_part)
2406 char *soft_matched_part;
2408 register char *p = spec;
2415 /* If substituting a switch, treat all chars like letters.
2416 Otherwise, NL, SPC, TAB and % are special. */
2417 switch (inswitch ? 'a' : c)
2420 /* End of line: finish any pending argument,
2421 then run the pending command if one has been started. */
2424 obstack_1grow (&obstack, 0);
2425 string = obstack_finish (&obstack);
2426 if (this_is_library_file)
2427 string = find_file (string);
2428 store_arg (string, delete_this_arg, this_is_output_file);
2429 if (this_is_output_file)
2430 outfiles[input_file_number] = string;
2434 if (argbuf_index > 0 && !strcmp (argbuf[argbuf_index - 1], "|"))
2437 for (i = 0; i < n_switches; i++)
2438 if (!strcmp (switches[i].part1, "pipe"))
2441 /* A `|' before the newline means use a pipe here,
2442 but only if -pipe was specified.
2443 Otherwise, execute now and don't pass the `|' as an arg. */
2446 input_from_pipe = 1;
2447 switches[i].valid = 1;
2454 if (argbuf_index > 0)
2460 /* Reinitialize for a new command, and for a new argument. */
2463 delete_this_arg = 0;
2464 this_is_output_file = 0;
2465 this_is_library_file = 0;
2466 input_from_pipe = 0;
2470 /* End any pending argument. */
2473 obstack_1grow (&obstack, 0);
2474 string = obstack_finish (&obstack);
2475 if (this_is_library_file)
2476 string = find_file (string);
2477 store_arg (string, delete_this_arg, this_is_output_file);
2478 if (this_is_output_file)
2479 outfiles[input_file_number] = string;
2483 obstack_1grow (&obstack, c);
2489 /* Space or tab ends an argument if one is pending. */
2492 obstack_1grow (&obstack, 0);
2493 string = obstack_finish (&obstack);
2494 if (this_is_library_file)
2495 string = find_file (string);
2496 store_arg (string, delete_this_arg, this_is_output_file);
2497 if (this_is_output_file)
2498 outfiles[input_file_number] = string;
2500 /* Reinitialize for a new argument. */
2502 delete_this_arg = 0;
2503 this_is_output_file = 0;
2504 this_is_library_file = 0;
2511 fatal ("Invalid specification! Bug in cc.");
2514 obstack_grow (&obstack, input_basename, basename_length);
2519 delete_this_arg = 2;
2522 /* Dump out the directories specified with LIBRARY_PATH,
2523 followed by the absolute directories
2524 that we search for startfiles. */
2526 for (i = 0; i < 2; i++)
2528 struct prefix_list *pl
2529 = (i == 0 ? library_prefix.plist : startfile_prefix.plist);
2531 char *buffer = (char *) xmalloc (bufsize);
2534 for (; pl; pl = pl->next)
2536 #ifdef RELATIVE_PREFIX_NOT_LINKDIR
2537 /* Used on systems which record the specified -L dirs
2538 and use them to search for dynamic linking. */
2539 /* Relative directories always come from -B,
2540 and it is better not to use them for searching
2541 at run time. In particular, stage1 loses */
2542 if (pl->prefix[0] != '/')
2547 if (is_linker_dir (pl->prefix, machine_suffix))
2549 do_spec_1 ("-L", 0, NULL_PTR);
2550 #ifdef SPACE_AFTER_L_OPTION
2551 do_spec_1 (" ", 0, NULL_PTR);
2553 do_spec_1 (pl->prefix, 1, NULL_PTR);
2554 /* Remove slash from machine_suffix. */
2555 if (strlen (machine_suffix) >= bufsize)
2556 bufsize = strlen (machine_suffix) * 2 + 1;
2557 buffer = (char *) xrealloc (buffer, bufsize);
2558 strcpy (buffer, machine_suffix);
2559 idx = strlen (buffer);
2560 if (buffer[idx - 1] == '/')
2561 buffer[idx - 1] = 0;
2562 do_spec_1 (buffer, 1, NULL_PTR);
2563 /* Make this a separate argument. */
2564 do_spec_1 (" ", 0, NULL_PTR);
2567 if (!pl->require_machine_suffix)
2569 if (is_linker_dir (pl->prefix, ""))
2571 do_spec_1 ("-L", 0, NULL_PTR);
2572 #ifdef SPACE_AFTER_L_OPTION
2573 do_spec_1 (" ", 0, NULL_PTR);
2575 /* Remove slash from pl->prefix. */
2576 if (strlen (pl->prefix) >= bufsize)
2577 bufsize = strlen (pl->prefix) * 2 + 1;
2578 buffer = (char *) xrealloc (buffer, bufsize);
2579 strcpy (buffer, pl->prefix);
2580 idx = strlen (buffer);
2581 if (buffer[idx - 1] == '/')
2582 buffer[idx - 1] = 0;
2583 do_spec_1 (buffer, 1, NULL_PTR);
2584 /* Make this a separate argument. */
2585 do_spec_1 (" ", 0, NULL_PTR);
2594 /* {...:%efoo} means report an error with `foo' as error message
2595 and don't execute any more commands for this file. */
2599 while (*p != 0 && *p != '\n') p++;
2600 buf = (char *) alloca (p - q + 1);
2601 strncpy (buf, q, p - q);
2611 if (save_temps_flag)
2612 obstack_grow (&obstack, input_basename, basename_length);
2615 #ifdef MKTEMP_EACH_FILE
2616 /* ??? This has a problem: the total number of
2617 values mktemp can return is limited.
2618 That matters for the names of object files.
2619 In 2.4, do something about that. */
2620 struct temp_name *t;
2622 while (*p == '.' || isalpha (*p))
2625 /* See if we already have an association of %g/%u/%U and
2627 for (t = temp_names; t; t = t->next)
2628 if (t->length == p - suffix
2629 && strncmp (t->suffix, suffix, p - suffix) == 0
2630 && t->unique == (c != 'g'))
2633 /* Make a new association if needed. %u requires one. */
2634 if (t == 0 || c == 'u')
2638 t = (struct temp_name *) xmalloc (sizeof (struct temp_name));
2639 t->next = temp_names;
2642 t->length = p - suffix;
2643 t->suffix = save_string (suffix, p - suffix);
2644 t->unique = (c != 'g');
2645 choose_temp_base ();
2646 t->filename = temp_filename;
2647 t->filename_length = temp_filename_length;
2650 obstack_grow (&obstack, t->filename, t->filename_length);
2651 delete_this_arg = 1;
2653 obstack_grow (&obstack, temp_filename, temp_filename_length);
2654 if (c == 'u' || c == 'U')
2660 sprintf (buff, "%d", unique);
2661 obstack_grow (&obstack, buff, strlen (buff));
2664 delete_this_arg = 1;
2670 obstack_grow (&obstack, input_filename, input_filename_length);
2675 if (gcc_exec_prefix)
2677 do_spec_1 ("-iprefix", 1, NULL_PTR);
2678 /* Make this a separate argument. */
2679 do_spec_1 (" ", 0, NULL_PTR);
2680 do_spec_1 (gcc_exec_prefix, 1, NULL_PTR);
2681 do_spec_1 (" ", 0, NULL_PTR);
2688 for (f = 0; f < n_infiles; f++)
2689 store_arg (outfiles[f], 0, 0);
2694 this_is_library_file = 1;
2698 this_is_output_file = 1;
2703 int index = argbuf_index;
2704 /* Handle the {...} following the %W. */
2707 p = handle_braces (p + 1);
2710 /* If any args were output, mark the last one for deletion
2712 if (argbuf_index != index)
2713 record_temp_file (argbuf[argbuf_index - 1], 0, 1);
2717 /* %x{OPTION} records OPTION for %X to output. */
2723 /* Skip past the option value and make a copy. */
2728 string = save_string (p1 + 1, p - p1 - 2);
2730 /* See if we already recorded this option. */
2731 for (i = 0; i < n_linker_options; i++)
2732 if (! strcmp (string, linker_options[i]))
2738 /* This option is new; add it. */
2740 if (!linker_options)
2742 = (char **) xmalloc (n_linker_options * sizeof (char **));
2745 = (char **) xrealloc (linker_options,
2746 n_linker_options * sizeof (char **));
2748 linker_options[n_linker_options - 1] = string;
2752 /* Dump out the options accumulated previously using %x,
2753 -Xlinker and -Wl,. */
2755 for (i = 0; i < n_linker_options; i++)
2757 do_spec_1 (linker_options[i], 1, NULL_PTR);
2758 /* Make each accumulated option a separate argument. */
2759 do_spec_1 (" ", 0, NULL_PTR);
2763 /* Dump out the options accumulated previously using -Wa,. */
2765 for (i = 0; i < n_assembler_options; i++)
2767 do_spec_1 (assembler_options[i], 1, NULL_PTR);
2768 /* Make each accumulated option a separate argument. */
2769 do_spec_1 (" ", 0, NULL_PTR);
2773 /* Here are digits and numbers that just process
2774 a certain constant string as a spec.
2775 /* Here are digits and numbers that just process
2776 a certain constant string as a spec. */
2779 value = do_spec_1 (cc1_spec, 0, NULL_PTR);
2785 value = do_spec_1 (cc1plus_spec, 0, NULL_PTR);
2791 value = do_spec_1 (asm_spec, 0, NULL_PTR);
2797 value = do_spec_1 (asm_final_spec, 0, NULL_PTR);
2803 value = do_spec_1 (signed_char_spec, 0, NULL_PTR);
2809 value = do_spec_1 (cpp_spec, 0, NULL_PTR);
2815 value = do_spec_1 (endfile_spec, 0, NULL_PTR);
2821 value = do_spec_1 (link_spec, 0, NULL_PTR);
2827 value = do_spec_1 (lib_spec, 0, NULL_PTR);
2834 char *x = (char *) alloca (strlen (cpp_predefines) + 1);
2838 /* Copy all of the -D options in CPP_PREDEFINES into BUF. */
2842 if (! strncmp (y, "-D", 2))
2843 /* Copy the whole option. */
2844 while (*y && *y != ' ' && *y != '\t')
2846 else if (*y == ' ' || *y == '\t')
2847 /* Copy whitespace to the result. */
2849 /* Don't copy other options. */
2856 value = do_spec_1 (buf, 0, NULL_PTR);
2864 char *x = (char *) alloca (strlen (cpp_predefines) * 4 + 1);
2868 /* Copy all of CPP_PREDEFINES into BUF,
2869 but put __ after every -D and at the end of each arg. */
2873 if (! strncmp (y, "-D", 2))
2880 if (strncmp (y, "__", 2))
2882 /* Stick __ at front of macro name. */
2885 /* Arrange to stick __ at the end as well. */
2889 /* Copy the macro name. */
2890 while (*y && *y != '=' && *y != ' ' && *y != '\t')
2899 /* Copy the value given, if any. */
2900 while (*y && *y != ' ' && *y != '\t')
2903 else if (*y == ' ' || *y == '\t')
2904 /* Copy whitespace to the result. */
2906 /* Don't copy -A options */
2912 /* Copy all of CPP_PREDEFINES into BUF,
2913 but put __ after every -D. */
2917 if (! strncmp (y, "-D", 2))
2922 if (strncmp (y, "__", 2))
2924 /* Stick __ at front of macro name. */
2929 /* Copy the macro name. */
2930 while (*y && *y != '=' && *y != ' ' && *y != '\t')
2933 /* Copy the value given, if any. */
2934 while (*y && *y != ' ' && *y != '\t')
2937 else if (*y == ' ' || *y == '\t')
2938 /* Copy whitespace to the result. */
2940 /* Don't copy -A options */
2946 /* Copy all of the -A options in CPP_PREDEFINES into BUF. */
2950 if (! strncmp (y, "-A", 2))
2951 /* Copy the whole option. */
2952 while (*y && *y != ' ' && *y != '\t')
2954 else if (*y == ' ' || *y == '\t')
2955 /* Copy whitespace to the result. */
2957 /* Don't copy other options. */
2964 value = do_spec_1 (buf, 0, NULL_PTR);
2971 value = do_spec_1 (startfile_spec, 0, NULL_PTR);
2976 /* Here we define characters other than letters and digits. */
2979 p = handle_braces (p);
2985 obstack_1grow (&obstack, '%');
2989 do_spec_1 (soft_matched_part, 1, NULL_PTR);
2990 do_spec_1 (" ", 0, NULL_PTR);
2993 /* Process a string found as the value of a spec given by name.
2994 This feature allows individual machine descriptions
2995 to add and use their own specs.
2996 %[...] modifies -D options the way %P does;
2997 %(...) uses the spec unmodified. */
3002 struct spec_list *sl;
3005 /* The string after the S/P is the name of a spec that is to be
3007 while (*p && *p != ')' && *p != ']')
3010 /* See if it's in the list */
3011 for (len = p - name, sl = specs; sl; sl = sl->next)
3012 if (strncmp (sl->name, name, len) == 0 && !sl->name[len])
3022 value = do_spec_1 (name, 0, NULL_PTR);
3028 char *x = (char *) alloca (strlen (name) * 2 + 1);
3032 /* Copy all of NAME into BUF, but put __ after
3033 every -D and at the end of each arg, */
3036 if (! strncmp (y, "-D", 2))
3044 else if (*y == ' ' || *y == 0)
3058 value = do_spec_1 (buf, 0, NULL_PTR);
3064 /* Discard the closing paren or bracket. */
3071 if (input_from_pipe)
3072 do_spec_1 ("-", 0, NULL_PTR);
3081 /* Backslash: treat next character as ordinary. */
3086 /* Ordinary character: put it into the current argument. */
3087 obstack_1grow (&obstack, c);
3091 return 0; /* End of string */
3094 /* Return 0 if we call do_spec_1 and that returns -1. */
3107 /* A `|' after the open-brace means,
3108 if the test fails, output a single minus sign rather than nothing.
3109 This is used in %{|!pipe:...}. */
3113 /* A `!' after the open-brace negates the condition:
3114 succeed if the specified switch is not present. */
3118 /* A `.' after the open-brace means test against the current suffix. */
3128 while (*p != ':' && *p != '}') p++;
3131 register int count = 1;
3149 int found = (input_suffix != 0
3150 && strlen (input_suffix) == p - filter
3151 && strncmp (input_suffix, filter, p - filter) == 0);
3157 && do_spec_1 (save_string (p + 1, q - p - 2), 0, NULL_PTR) < 0)
3162 else if (p[-1] == '*' && p[0] == '}')
3164 /* Substitute all matching switches as separate args. */
3167 for (i = 0; i < n_switches; i++)
3168 if (!strncmp (switches[i].part1, filter, p - filter))
3173 /* Test for presence of the specified switch. */
3177 /* If name specified ends in *, as in {x*:...},
3178 check for %* and handle that case. */
3179 if (p[-1] == '*' && !negate)
3184 /* First see whether we have %*. */
3188 if (*r == '%' && r[1] == '*')
3192 /* If we do, handle that case. */
3195 /* Substitute all matching switches as separate args.
3196 But do this by substituting for %*
3197 in the text that follows the colon. */
3199 unsigned hard_match_len = p - filter - 1;
3200 char *string = save_string (p + 1, q - p - 2);
3202 for (i = 0; i < n_switches; i++)
3203 if (!strncmp (switches[i].part1, filter, hard_match_len))
3205 do_spec_1 (string, 0, &switches[i].part1[hard_match_len]);
3206 /* Pass any arguments this switch has. */
3214 /* If name specified ends in *, as in {x*:...},
3215 check for presence of any switch name starting with x. */
3218 for (i = 0; i < n_switches; i++)
3220 unsigned hard_match_len = p - filter - 1;
3222 if (!strncmp (switches[i].part1, filter, hard_match_len))
3224 switches[i].valid = 1;
3229 /* Otherwise, check for presence of exact name specified. */
3232 for (i = 0; i < n_switches; i++)
3234 if (!strncmp (switches[i].part1, filter, p - filter)
3235 && switches[i].part1[p - filter] == 0)
3237 switches[i].valid = 1;
3244 /* If it is as desired (present for %{s...}, absent for %{-s...})
3245 then substitute either the switch or the specified
3246 conditional text. */
3247 if (present != negate)
3255 if (do_spec_1 (save_string (p + 1, q - p - 2), 0, NULL_PTR) < 0)
3261 /* Here if a %{|...} conditional fails: output a minus sign,
3262 which means "standard output" or "standard input". */
3263 do_spec_1 ("-", 0, NULL_PTR);
3270 /* Pass a switch to the current accumulating command
3271 in the same form that we received it.
3272 SWITCHNUM identifies the switch; it is an index into
3273 the vector of switches gcc received, which is `switches'.
3274 This cannot fail since it never finishes a command line.
3276 If OMIT_FIRST_WORD is nonzero, then we omit .part1 of the argument. */
3279 give_switch (switchnum, omit_first_word)
3281 int omit_first_word;
3283 if (!omit_first_word)
3285 do_spec_1 ("-", 0, NULL_PTR);
3286 do_spec_1 (switches[switchnum].part1, 1, NULL_PTR);
3288 do_spec_1 (" ", 0, NULL_PTR);
3289 if (switches[switchnum].args != 0)
3292 for (p = switches[switchnum].args; *p; p++)
3294 do_spec_1 (*p, 1, NULL_PTR);
3295 do_spec_1 (" ", 0, NULL_PTR);
3298 switches[switchnum].valid = 1;
3301 /* Search for a file named NAME trying various prefixes including the
3302 user's -B prefix and some standard ones.
3303 Return the absolute file name found. If nothing is found, return NAME. */
3311 newname = find_a_file (&startfile_prefix, name, R_OK);
3312 return newname ? newname : name;
3315 /* Determine whether a -L option is relevant. Not required for certain
3316 fixed names and for directories that don't exist. */
3319 is_linker_dir (path1, path2)
3323 int len1 = strlen (path1);
3324 int len2 = strlen (path2);
3325 char *path = (char *) alloca (3 + len1 + len2);
3329 /* Construct the path from the two parts. Ensure the string ends with "/.".
3330 The resulting path will be a directory even if the given path is a
3332 bcopy (path1, path, len1);
3333 bcopy (path2, path + len1, len2);
3334 cp = path + len1 + len2;
3340 /* Exclude directories that the linker is known to search. */
3341 if ((cp - path == 6 && strcmp (path, "/lib/.") == 0)
3342 || (cp - path == 10 && strcmp (path, "/usr/lib/.") == 0))
3345 return (stat (path, &st) >= 0 && S_ISDIR (st.st_mode));
3348 /* On fatal signals, delete all the temporary files. */
3351 fatal_error (signum)
3354 signal (signum, SIG_DFL);
3355 delete_failure_queue ();
3356 delete_temp_files ();
3357 /* Get the same signal again, this time not handled,
3358 so its normal effect occurs. */
3359 kill (getpid (), signum);
3370 int linker_was_run = 0;
3371 char *explicit_link_files;
3374 programname = argv[0];
3376 if (signal (SIGINT, SIG_IGN) != SIG_IGN)
3377 signal (SIGINT, fatal_error);
3378 if (signal (SIGHUP, SIG_IGN) != SIG_IGN)
3379 signal (SIGHUP, fatal_error);
3380 if (signal (SIGTERM, SIG_IGN) != SIG_IGN)
3381 signal (SIGTERM, fatal_error);
3383 if (signal (SIGPIPE, SIG_IGN) != SIG_IGN)
3384 signal (SIGPIPE, fatal_error);
3388 argbuf = (char **) xmalloc (argbuf_length * sizeof (char *));
3390 obstack_init (&obstack);
3392 /* Set up to remember the pathname of gcc and any options
3393 needed for collect. */
3394 obstack_init (&collect_obstack);
3395 obstack_grow (&collect_obstack, "COLLECT_GCC=", sizeof ("COLLECT_GCC=")-1);
3396 obstack_grow (&collect_obstack, programname, strlen (programname)+1);
3397 putenv (obstack_finish (&collect_obstack));
3399 /* Choose directory for temp files. */
3401 choose_temp_base ();
3403 /* Make a table of what switches there are (switches, n_switches).
3404 Make a table of specified input files (infiles, n_infiles).
3405 Decode switches that are handled locally. */
3407 process_command (argc, argv);
3409 /* Initialize the vector of specs to just the default.
3410 This means one element containing 0s, as a terminator. */
3412 compilers = (struct compiler *) xmalloc (sizeof default_compilers);
3413 bcopy (default_compilers, compilers, sizeof default_compilers);
3414 n_compilers = n_default_compilers;
3416 /* Read specs from a file if there is one. */
3418 machine_suffix = concat (spec_machine, "/", concat (spec_version, "/", ""));
3419 just_machine_suffix = concat (spec_machine, "/", "");
3421 specs_file = find_a_file (&startfile_prefix, "specs", R_OK);
3422 /* Read the specs file unless it is a default one. */
3423 if (specs_file != 0 && strcmp (specs_file, "specs"))
3424 read_specs (specs_file);
3426 /* If not cross-compiling, look for startfiles in the standard places. */
3427 /* The fact that these are done here, after reading the specs file,
3428 means that it cannot be found in these directories.
3429 But that's okay. It should never be there anyway. */
3432 #ifdef MD_EXEC_PREFIX
3433 add_prefix (&exec_prefix, md_exec_prefix, 0, 0, NULL_PTR);
3434 add_prefix (&startfile_prefix, md_exec_prefix, 0, 0, NULL_PTR);
3437 #ifdef MD_STARTFILE_PREFIX
3438 add_prefix (&startfile_prefix, md_startfile_prefix, 0, 0, NULL_PTR);
3441 #ifdef MD_STARTFILE_PREFIX_1
3442 add_prefix (&startfile_prefix, md_startfile_prefix_1, 0, 0, NULL_PTR);
3445 add_prefix (&startfile_prefix, standard_startfile_prefix, 0, 0,
3447 add_prefix (&startfile_prefix, standard_startfile_prefix_1, 0, 0,
3449 add_prefix (&startfile_prefix, standard_startfile_prefix_2, 0, 0,
3451 #if 0 /* Can cause surprises, and one can use -B./ instead. */
3452 add_prefix (&startfile_prefix, "./", 0, 1, NULL_PTR);
3456 /* Now we have the specs.
3457 Set the `valid' bits for switches that match anything in any spec. */
3459 validate_all_switches ();
3461 /* Warn about any switches that no pass was interested in. */
3463 for (i = 0; i < n_switches; i++)
3464 if (! switches[i].valid)
3465 error ("unrecognized option `-%s'", switches[i].part1);
3467 if (print_libgcc_file_name)
3469 printf ("%s\n", find_file ("libgcc.a"));
3473 /* Obey some of the options. */
3477 fprintf (stderr, "gcc version %s\n", version_string);
3483 fatal ("No input files specified.");
3485 /* Make a place to record the compiler output file names
3486 that correspond to the input files. */
3488 outfiles = (char **) xmalloc (n_infiles * sizeof (char *));
3489 bzero (outfiles, n_infiles * sizeof (char *));
3491 /* Record which files were specified explicitly as link input. */
3493 explicit_link_files = xmalloc (n_infiles);
3494 bzero (explicit_link_files, n_infiles);
3496 for (i = 0; i < n_infiles; i++)
3498 register struct compiler *cp = 0;
3499 int this_file_error = 0;
3501 /* Tell do_spec what to substitute for %i. */
3503 input_filename = infiles[i].name;
3504 input_filename_length = strlen (input_filename);
3505 input_file_number = i;
3507 /* Use the same thing in %o, unless cp->spec says otherwise. */
3509 outfiles[i] = input_filename;
3511 /* Figure out which compiler from the file's suffix. */
3513 cp = lookup_compiler (infiles[i].name, input_filename_length,
3514 infiles[i].language);
3518 /* Ok, we found an applicable compiler. Run its spec. */
3519 /* First say how much of input_filename to substitute for %b */
3523 input_basename = input_filename;
3524 for (p = input_filename; *p; p++)
3526 input_basename = p + 1;
3528 /* Find a suffix starting with the last period,
3529 and set basename_length to exclude that suffix. */
3530 basename_length = strlen (input_basename);
3531 p = input_basename + basename_length;
3532 while (p != input_basename && *p != '.') --p;
3533 if (*p == '.' && p != input_basename)
3535 basename_length = p - input_basename;
3536 input_suffix = p + 1;
3542 for (j = 0; j < sizeof cp->spec / sizeof cp->spec[0]; j++)
3544 len += strlen (cp->spec[j]);
3546 p = (char *) xmalloc (len + 1);
3549 for (j = 0; j < sizeof cp->spec / sizeof cp->spec[0]; j++)
3552 strcpy (p + len, cp->spec[j]);
3553 len += strlen (cp->spec[j]);
3556 value = do_spec (p);
3559 this_file_error = 1;
3562 /* If this file's name does not contain a recognized suffix,
3563 record it as explicit linker input. */
3566 explicit_link_files[i] = 1;
3568 /* Clear the delete-on-failure queue, deleting the files in it
3569 if this compilation failed. */
3571 if (this_file_error)
3573 delete_failure_queue ();
3576 /* If this compilation succeeded, don't delete those files later. */
3577 clear_failure_queue ();
3580 /* Run ld to link all the compiler output files. */
3582 if (error_count == 0)
3584 int tmp = execution_count;
3588 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
3590 putenv_from_prefixes (&exec_prefix, "COMPILER_PATH=");
3591 putenv_from_prefixes (&startfile_prefix, "LIBRARY_PATH=");
3593 /* Build COLLECT_GCC_OPTIONS to have all of the options specified to
3595 obstack_grow (&collect_obstack, "COLLECT_GCC_OPTIONS=",
3596 sizeof ("COLLECT_GCC_OPTIONS=")-1);
3599 for (i = 0; i < n_switches; i++)
3603 obstack_grow (&collect_obstack, " ", 1);
3606 obstack_grow (&collect_obstack, "-", 1);
3607 obstack_grow (&collect_obstack, switches[i].part1,
3608 strlen (switches[i].part1));
3610 for (args = switches[i].args; args && *args; args++)
3612 obstack_grow (&collect_obstack, " ", 1);
3613 obstack_grow (&collect_obstack, *args, strlen (*args));
3616 obstack_grow (&collect_obstack, "\0", 1);
3617 putenv (obstack_finish (&collect_obstack));
3619 value = do_spec (link_command_spec);
3622 linker_was_run = (tmp != execution_count);
3625 /* Warn if a -B option was specified but the prefix was never used. */
3626 unused_prefix_warnings (&exec_prefix);
3627 unused_prefix_warnings (&startfile_prefix);
3629 /* If options said don't run linker,
3630 complain about input files to be given to the linker. */
3632 if (! linker_was_run && error_count == 0)
3633 for (i = 0; i < n_infiles; i++)
3634 if (explicit_link_files[i])
3635 error ("%s: linker input file unused since linking not done",
3638 /* Delete some or all of the temporary files we made. */
3641 delete_failure_queue ();
3642 delete_temp_files ();
3644 exit (error_count > 0 ? (signal_count ? 2 : 1) : 0);
3649 /* Find the proper compilation spec for the file name NAME,
3650 whose length is LENGTH. LANGUAGE is the specified language,
3651 or 0 if none specified. */
3653 static struct compiler *
3654 lookup_compiler (name, length, language)
3659 struct compiler *cp;
3661 /* Look for the language, if one is spec'd. */
3664 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
3668 if (cp->suffix[0] == '@'
3669 && !strcmp (cp->suffix + 1, language))
3673 error ("language %s not recognized", language);
3676 /* Look for a suffix. */
3677 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
3679 if (/* The suffix `-' matches only the file name `-'. */
3680 (!strcmp (cp->suffix, "-") && !strcmp (name, "-"))
3682 (strlen (cp->suffix) < length
3683 /* See if the suffix matches the end of NAME. */
3684 && !strcmp (cp->suffix,
3685 name + length - strlen (cp->suffix))))
3687 if (cp->spec[0][0] == '@')
3689 struct compiler *new;
3690 /* An alias entry maps a suffix to a language.
3691 Search for the language; pass 0 for NAME and LENGTH
3692 to avoid infinite recursion if language not found.
3693 Construct the new compiler spec. */
3694 language = cp->spec[0] + 1;
3695 new = (struct compiler *) xmalloc (sizeof (struct compiler));
3696 new->suffix = cp->suffix;
3697 bcopy (lookup_compiler (NULL_PTR, 0, language)->spec,
3698 new->spec, sizeof new->spec);
3701 /* A non-alias entry: return it. */
3713 register char *value = (char *) malloc (size);
3715 fatal ("virtual memory exhausted");
3720 xrealloc (ptr, size)
3724 register char *value = (char *) realloc (ptr, size);
3726 fatal ("virtual memory exhausted");
3730 /* Return a newly-allocated string whose contents concatenate those of s1, s2, s3. */
3736 int len1 = strlen (s1), len2 = strlen (s2), len3 = strlen (s3);
3737 char *result = xmalloc (len1 + len2 + len3 + 1);
3739 strcpy (result, s1);
3740 strcpy (result + len1, s2);
3741 strcpy (result + len1 + len2, s3);
3742 *(result + len1 + len2 + len3) = 0;
3748 save_string (s, len)
3752 register char *result = xmalloc (len + 1);
3754 bcopy (s, result, len);
3760 pfatal_with_name (name)
3765 if (errno < sys_nerr)
3766 s = concat ("%s: ", sys_errlist[errno], "");
3768 s = "cannot open %s";
3773 perror_with_name (name)
3778 if (errno < sys_nerr)
3779 s = concat ("%s: ", sys_errlist[errno], "");
3781 s = "cannot open %s";
3791 if (errno < sys_nerr)
3792 s = concat ("installation problem, cannot exec %s: ",
3793 sys_errlist[errno], "");
3795 s = "installation problem, cannot exec %s";
3799 /* More 'friendly' abort that prints the line and file.
3800 config.h can #define abort fancy_abort if you like that sort of thing. */
3805 fatal ("Internal gcc abort.");
3810 /* Output an error message and exit */
3820 format = va_arg (ap, char *);
3821 fprintf (stderr, "%s: ", programname);
3822 vfprintf (stderr, format, ap);
3824 fprintf (stderr, "\n");
3825 delete_temp_files ();
3837 format = va_arg (ap, char *);
3838 fprintf (stderr, "%s: ", programname);
3839 vfprintf (stderr, format, ap);
3842 fprintf (stderr, "\n");
3845 #else /* not HAVE_VPRINTF */
3848 fatal (msg, arg1, arg2)
3849 char *msg, *arg1, *arg2;
3851 error (msg, arg1, arg2);
3852 delete_temp_files ();
3857 error (msg, arg1, arg2)
3858 char *msg, *arg1, *arg2;
3860 fprintf (stderr, "%s: ", programname);
3861 fprintf (stderr, msg, arg1, arg2);
3862 fprintf (stderr, "\n");
3865 #endif /* not HAVE_VPRINTF */
3869 validate_all_switches ()
3871 struct compiler *comp;
3874 struct spec_list *spec;
3876 for (comp = compilers; comp->spec[0]; comp++)
3879 for (i = 0; i < sizeof comp->spec / sizeof comp->spec[0] && comp->spec[i]; i++)
3883 if (c == '%' && *p == '{')
3884 /* We have a switch spec. */
3885 validate_switches (p + 1);
3889 /* look through the linked list of extra specs read from the specs file */
3890 for (spec = specs; spec ; spec = spec->next)
3894 if (c == '%' && *p == '{')
3895 /* We have a switch spec. */
3896 validate_switches (p + 1);
3899 p = link_command_spec;
3901 if (c == '%' && *p == '{')
3902 /* We have a switch spec. */
3903 validate_switches (p + 1);
3905 /* Now notice switches mentioned in the machine-specific specs. */
3909 if (c == '%' && *p == '{')
3910 /* We have a switch spec. */
3911 validate_switches (p + 1);
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);
3925 p = signed_char_spec;
3927 if (c == '%' && *p == '{')
3928 /* We have a switch spec. */
3929 validate_switches (p + 1);
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);
3962 /* Look at the switch-name that comes after START
3963 and mark as valid all supplied switches that match it. */
3966 validate_switches (start)
3969 register char *p = start;
3984 while (*p != ':' && *p != '}') p++;
3988 else if (p[-1] == '*')
3990 /* Mark all matching switches as valid. */
3992 for (i = 0; i < n_switches; i++)
3993 if (!strncmp (switches[i].part1, filter, p - filter))
3994 switches[i].valid = 1;
3998 /* Mark an exact matching switch as valid. */
3999 for (i = 0; i < n_switches; i++)
4001 if (!strncmp (switches[i].part1, filter, p - filter)
4002 && switches[i].part1[p - filter] == 0)
4003 switches[i].valid = 1;