1 /* Compiler driver program that can handle many languages.
2 Copyright (C) 1987, 1989, 1992 Free Software Foundation, Inc.
4 This file is part of GNU CC.
6 GNU CC is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2, or (at your option)
11 GNU CC is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with GNU CC; see the file COPYING. If not, write to
18 the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
20 This paragraph is here to try to keep Sun CC from dying.
21 The number of chars here seems crucial!!!! */
23 /* This program is the user interface to the C compiler and possibly to
24 other compilers. It is used because compilation is a complicated procedure
25 which involves running several programs and passing temporary files between
26 them, forwarding the users switches to those programs selectively,
27 and deleting the temporary files at the end.
29 CC recognizes how to compile each input file by suffixes in the file names.
30 Once it knows which kind of compilation to perform, the procedure for
31 compilation is specified by a string called a "spec". */
33 #include <sys/types.h>
37 #include <sys/file.h> /* May get R_OK, etc. on some systems. */
50 /* Define a generic NULL if one hasn't already been defined. */
57 #if defined (USE_PROTOTYPES) ? USE_PROTOTYPES : defined (__STDC__)
58 #define GENERIC_PTR void *
60 #define GENERIC_PTR char *
65 #define NULL_PTR ((GENERIC_PTR)0)
72 /* On MSDOS, write temp files in current dir
73 because there's no place else we can expect to use. */
80 /* Test if something is a normal file. */
82 #define S_ISREG(m) (((m) & S_IFMT) == S_IFREG)
85 /* Test if something is a directory. */
87 #define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
90 /* By default there is no special suffix for executables. */
91 #ifndef EXECUTABLE_SUFFIX
92 #define EXECUTABLE_SUFFIX ""
95 /* By default, colon separates directories in a path. */
96 #ifndef PATH_SEPARATOR
97 #define PATH_SEPARATOR ':'
100 #define obstack_chunk_alloc xmalloc
101 #define obstack_chunk_free free
104 extern char *getenv ();
106 extern int errno, sys_nerr;
107 extern char *sys_errlist[];
109 extern int execv (), execvp ();
111 /* If a stage of compilation returns an exit status >= 1,
112 compilation of that file ceases. */
114 #define MIN_FATAL_STATUS 1
116 /* Flag saying to print the full filename of libgcc.a
117 as found through our usual search mechanism. */
119 static int print_libgcc_file_name;
121 /* Flag indicating whether we should print the command and arguments */
123 static int verbose_flag;
125 /* Nonzero means write "temp" files in source directory
126 and use the source file's name in them, and don't delete them. */
128 static int save_temps_flag;
130 /* The compiler version specified with -V */
132 static char *spec_version;
134 /* The target machine specified with -b. */
136 static char *spec_machine = DEFAULT_TARGET_MACHINE;
138 /* Nonzero if cross-compiling.
139 When -b is used, the value comes from the `specs' file. */
142 static int cross_compile = 1;
144 static int cross_compile = 0;
147 /* The number of errors that have occurred; the link phase will not be
148 run if this is non-zero. */
149 static int error_count = 0;
151 /* This is the obstack which we use to allocate many strings. */
153 static struct obstack obstack;
155 /* This is the obstack to build an environment variable to pass to
156 collect2 that describes all of the relevant switches of what to
157 pass the compiler in building the list of pointers to constructors
160 static struct obstack collect_obstack;
162 extern char *version_string;
164 static void set_spec ();
165 static struct compiler *lookup_compiler ();
166 static char *find_a_file ();
167 static void add_prefix ();
168 static char *skip_whitespace ();
169 static void record_temp_file ();
170 static char *handle_braces ();
171 static char *save_string ();
172 static char *concat ();
173 static int do_spec ();
174 static int do_spec_1 ();
175 static char *find_file ();
176 static int is_linker_dir ();
177 static void validate_switches ();
178 static void validate_all_switches ();
179 static void give_switch ();
180 static void pfatal_with_name ();
181 static void perror_with_name ();
182 static void perror_exec ();
183 static void fatal ();
184 static void error ();
189 /* Specs are strings containing lines, each of which (if not blank)
190 is made up of a program name, and arguments separated by spaces.
191 The program name must be exact and start from root, since no path
192 is searched and it is unreliable to depend on the current working directory.
193 Redirection of input or output is not supported; the subprograms must
194 accept filenames saying what files to read and write.
196 In addition, the specs can contain %-sequences to substitute variable text
197 or for conditional text. Here is a table of all defined %-sequences.
198 Note that spaces are not generated automatically around the results of
199 expanding these sequences; therefore, you can concatenate them together
200 or with constant text in a single argument.
202 %% substitute one % into the program name or argument.
203 %i substitute the name of the input file being processed.
204 %b substitute the basename of the input file being processed.
205 This is the substring up to (and not including) the last period
206 and not including the directory.
207 %g substitute the temporary-file-name-base. This is a string chosen
208 once per compilation. Different temporary file names are made by
209 concatenation of constant strings on the end, as in `%g.s'.
210 %g also has the same effect of %d.
211 %u like %g, but make the temporary file name unique.
212 %U returns the last file name generated with %u.
213 %d marks the argument containing or following the %d as a
214 temporary file name, so that that file will be deleted if CC exits
215 successfully. Unlike %g, this contributes no text to the argument.
216 %w marks the argument containing or following the %w as the
217 "output file" of this compilation. This puts the argument
218 into the sequence of arguments that %o will substitute later.
220 like %{...} but mark last argument supplied within
221 as a file to be deleted on failure.
222 %o substitutes the names of all the output files, with spaces
223 automatically placed around them. You should write spaces
224 around the %o as well or the results are undefined.
225 %o is for use in the specs for running the linker.
226 Input files whose names have no recognized suffix are not compiled
227 at all, but they are included among the output files, so they will
229 %p substitutes the standard macro predefinitions for the
230 current target machine. Use this when running cpp.
231 %P like %p, but puts `__' before and after the name of each macro.
232 (Except macros that already have __.)
234 %I Substitute a -iprefix option made from GCC_EXEC_PREFIX.
235 %s current argument is the name of a library or startup file of some sort.
236 Search for that file in a standard list of directories
237 and substitute the full name found.
238 %eSTR Print STR as an error message. STR is terminated by a newline.
239 Use this when inconsistent options are detected.
240 %x{OPTION} Accumulate an option for %X.
241 %X Output the accumulated linker options specified by compilations.
242 %Y Output the accumulated assembler options specified by compilations.
243 %a process ASM_SPEC as a spec.
244 This allows config.h to specify part of the spec for running as.
245 %A process ASM_FINAL_SPEC as a spec. A capital A is actually
246 used here. This can be used to run a post-processor after the
247 assembler has done it's job.
248 %D Dump out a -L option for each directory in library_prefix,
249 followed by a -L option for each directory in startfile_prefix.
250 %l process LINK_SPEC as a spec.
251 %L process LIB_SPEC as a spec.
252 %S process STARTFILE_SPEC as a spec. A capital S is actually used here.
253 %E process ENDFILE_SPEC as a spec. A capital E is actually used here.
254 %c process SIGNED_CHAR_SPEC as a spec.
255 %C process CPP_SPEC as a spec. A capital C is actually used here.
256 %1 process CC1_SPEC as a spec.
257 %2 process CC1PLUS_SPEC as a spec.
258 %| output "-" if the input for the current command is coming from a pipe.
259 %* substitute the variable part of a matched option. (See below.)
260 Note that each comma in the substituted string is replaced by
262 %{S} substitutes the -S switch, if that switch was given to CC.
263 If that switch was not specified, this substitutes nothing.
264 Here S is a metasyntactic variable.
265 %{S*} substitutes all the switches specified to CC whose names start
266 with -S. This is used for -o, -D, -I, etc; switches that take
267 arguments. CC considers `-o foo' as being one switch whose
268 name starts with `o'. %{o*} would substitute this text,
269 including the space; thus, two arguments would be generated.
270 %{S*:X} substitutes X if one or more switches whose names start with -S are
271 specified to CC. Note that the tail part of the -S option
272 (i.e. the part matched by the `*') will be substituted for each
273 occurrence of %* within X.
274 %{S:X} substitutes X, but only if the -S switch was given to CC.
275 %{!S:X} substitutes X, but only if the -S switch was NOT given to CC.
276 %{|S:X} like %{S:X}, but if no S switch, substitute `-'.
277 %{|!S:X} like %{!S:X}, but if there is an S switch, substitute `-'.
278 %{.S:X} substitutes X, but only if processing a file with suffix S.
279 %{!.S:X} substitutes X, but only if NOT processing a file with suffix S.
280 %(Spec) processes a specification defined in a specs file as *Spec:
281 %[Spec] as above, but put __ around -D arguments
283 The conditional text X in a %{S:X} or %{!S:X} construct may contain
284 other nested % constructs or spaces, or even newlines. They are
285 processed as usual, as described above.
287 The character | is used to indicate that a command should be piped to
288 the following command, but only if -pipe is specified.
290 Note that it is built into CC which switches take arguments and which
291 do not. You might think it would be useful to generalize this to
292 allow each compiler's spec to say which switches take arguments. But
293 this cannot be done in a consistent fashion. CC cannot even decide
294 which input files have been specified without knowing which switches
295 take arguments, and it must know which input files to compile in order
296 to tell which compilers to run.
298 CC also knows implicitly that arguments starting in `-l' are to be
299 treated as compiler output files, and passed to the linker in their
300 proper position among the other output files. */
302 /* Define the macros used for specs %a, %l, %L, %S, %c, %C, %1. */
304 /* config.h can define ASM_SPEC to provide extra args to the assembler
305 or extra switch-translations. */
310 /* config.h can define ASM_FINAL_SPEC to run a post processor after
311 the assembler has run. */
312 #ifndef ASM_FINAL_SPEC
313 #define ASM_FINAL_SPEC ""
316 /* config.h can define CPP_SPEC to provide extra args to the C preprocessor
317 or extra switch-translations. */
322 /* config.h can define CC1_SPEC to provide extra args to cc1 and cc1plus
323 or extra switch-translations. */
328 /* config.h can define CC1PLUS_SPEC to provide extra args to cc1plus
329 or extra switch-translations. */
331 #define CC1PLUS_SPEC ""
334 /* config.h can define LINK_SPEC to provide extra args to the linker
335 or extra switch-translations. */
340 /* config.h can define LIB_SPEC to override the default libraries. */
342 #define LIB_SPEC "%{g*:-lg} %{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p}"
345 /* config.h can define STARTFILE_SPEC to override the default crt0 files. */
346 #ifndef STARTFILE_SPEC
347 #define STARTFILE_SPEC \
348 "%{pg:gcrt0.o%s}%{!pg:%{p:mcrt0.o%s}%{!p:crt0.o%s}}"
351 /* config.h can define SWITCHES_NEED_SPACES to control passing -o and -L.
352 Make the string nonempty to require spaces there. */
353 #ifndef SWITCHES_NEED_SPACES
354 #define SWITCHES_NEED_SPACES ""
357 /* config.h can define ENDFILE_SPEC to override the default crtn files. */
359 #define ENDFILE_SPEC ""
362 /* This spec is used for telling cpp whether char is signed or not. */
363 #ifndef SIGNED_CHAR_SPEC
364 /* Use #if rather than ?:
365 because MIPS C compiler rejects like ?: in initializers. */
366 #if DEFAULT_SIGNED_CHAR
367 #define SIGNED_CHAR_SPEC "%{funsigned-char:-D__CHAR_UNSIGNED__}"
369 #define SIGNED_CHAR_SPEC "%{!fsigned-char:-D__CHAR_UNSIGNED__}"
373 static char *cpp_spec = CPP_SPEC;
374 static char *cpp_predefines = CPP_PREDEFINES;
375 static char *cc1_spec = CC1_SPEC;
376 static char *cc1plus_spec = CC1PLUS_SPEC;
377 static char *signed_char_spec = SIGNED_CHAR_SPEC;
378 static char *asm_spec = ASM_SPEC;
379 static char *asm_final_spec = ASM_FINAL_SPEC;
380 static char *link_spec = LINK_SPEC;
381 static char *lib_spec = LIB_SPEC;
382 static char *endfile_spec = ENDFILE_SPEC;
383 static char *startfile_spec = STARTFILE_SPEC;
384 static char *switches_need_spaces = SWITCHES_NEED_SPACES;
386 /* This defines which switch letters take arguments. */
388 #ifndef SWITCH_TAKES_ARG
389 #define SWITCH_TAKES_ARG(CHAR) \
390 ((CHAR) == 'D' || (CHAR) == 'U' || (CHAR) == 'o' \
391 || (CHAR) == 'e' || (CHAR) == 'T' || (CHAR) == 'u' \
392 || (CHAR) == 'I' || (CHAR) == 'm' \
393 || (CHAR) == 'L' || (CHAR) == 'A')
396 /* This defines which multi-letter switches take arguments. */
398 #ifndef WORD_SWITCH_TAKES_ARG
399 #define WORD_SWITCH_TAKES_ARG(STR) \
400 (!strcmp (STR, "Tdata") || !strcmp (STR, "Ttext") \
401 || !strcmp (STR, "Tbss") || !strcmp (STR, "include") \
402 || !strcmp (STR, "imacros") || !strcmp (STR, "aux-info"))
405 /* Record the mapping from file suffixes for compilation specs. */
409 char *suffix; /* Use this compiler for input files
410 whose names end in this suffix. */
412 char *spec[4]; /* To use this compiler, concatenate these
413 specs and pass to do_spec. */
416 /* Pointer to a vector of `struct compiler' that gives the spec for
417 compiling a file, based on its suffix.
418 A file that does not end in any of these suffixes will be passed
419 unchanged to the loader and nothing else will be done to it.
421 An entry containing two 0s is used to terminate the vector.
423 If multiple entries match a file, the last matching one is used. */
425 static struct compiler *compilers;
427 /* Number of entries in `compilers', not counting the null terminator. */
429 static int n_compilers;
431 /* The default list of file name suffixes and their compilation specs. */
433 static struct compiler default_compilers[] =
437 "cpp -lang-c %{nostdinc*} %{C} %{v} %{A*} %{I*} %{P} %I\
438 %{C:%{!E:%eGNU C does not support -C without using -E}}\
439 %{M} %{MM} %{MD:-MD %b.d} %{MMD:-MMD %b.d}\
440 -undef -D__GNUC__=2 %{ansi:-trigraphs -$ -D__STRICT_ANSI__}\
441 %{!undef:%{!ansi:%p} %P} %{trigraphs} \
442 %c %{O*:-D__OPTIMIZE__} %{traditional} %{ftraditional:-traditional}\
443 %{traditional-cpp:-traditional}\
444 %{g*} %{W*} %{w} %{pedantic*} %{H} %{d*} %C %{D*} %{U*} %{i*}\
445 %i %{!M:%{!MM:%{!E:%{!pipe:%g.i}}}}%{E:%W{o*}}%{M:%W{o*}}%{MM:%W{o*}} |\n",
446 "%{!M:%{!MM:%{!E:cc1 %{!pipe:%g.i} %1 \
447 %{!Q:-quiet} -dumpbase %b.c %{d*} %{m*} %{a}\
448 %{g*} %{O*} %{W*} %{w} %{pedantic*} %{ansi} \
449 %{traditional} %{v:-version} %{pg:-p} %{p} %{f*}\
451 %{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\
452 %{S:%W{o*}%{!o*:-o %b.s}}%{!S:-o %{|!pipe:%g.s}} |\n\
453 %{!S:as %{R} %{j} %{J} %{h} %{d2} %a %Y\
454 %{c:%W{o*}%{!o*:-o %w%b.o}}%{!c:-o %d%w%u.o}\
455 %{!pipe:%g.s} %A\n }}}}"},
457 "%{E:cpp -lang-c %{nostdinc*} %{C} %{v} %{A*} %{I*} %{P} %I\
458 %{C:%{!E:%eGNU C does not support -C without using -E}}\
459 %{M} %{MM} %{MD:-MD %b.d} %{MMD:-MMD %b.d}\
460 -undef -D__GNUC__=2 %{ansi:-trigraphs -$ -D__STRICT_ANSI__}\
461 %{!undef:%{!ansi:%p} %P} %{trigraphs}\
462 %c %{O*:-D__OPTIMIZE__} %{traditional} %{ftraditional:-traditional}\
463 %{traditional-cpp:-traditional}\
464 %{g*} %{W*} %{w} %{pedantic*} %{H} %{d*} %C %{D*} %{U*} %{i*}\
466 %{!E:%e-E required when input is from standard input}"},
467 {".m", "@objective-c"},
469 "cpp -lang-objc %{nostdinc*} %{C} %{v} %{A*} %{I*} %{P} %I\
470 %{C:%{!E:%eGNU C does not support -C without using -E}}\
471 %{M} %{MM} %{MD:-MD %b.d} %{MMD:-MMD %b.d}\
472 -undef -D__OBJC__ -D__GNUC__=2 %{ansi:-trigraphs -$ -D__STRICT_ANSI__}\
473 %{!undef:%{!ansi:%p} %P} %{trigraphs}\
474 %c %{O*:-D__OPTIMIZE__} %{traditional} %{ftraditional:-traditional}\
475 %{traditional-cpp:-traditional}\
476 %{g*} %{W*} %{w} %{pedantic*} %{H} %{d*} %C %{D*} %{U*} %{i*}\
477 %i %{!M:%{!MM:%{!E:%{!pipe:%g.i}}}}%{E:%W{o*}}%{M:%W{o*}}%{MM:%W{o*}} |\n",
478 "%{!M:%{!MM:%{!E:cc1obj %{!pipe:%g.i} %1 \
479 %{!Q:-quiet} -dumpbase %b.m %{d*} %{m*} %{a}\
480 %{g*} %{O*} %{W*} %{w} %{pedantic*} %{ansi} \
481 %{traditional} %{v:-version} %{pg:-p} %{p} %{f*} \
482 -lang-objc %{gen-decls} \
484 %{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\
485 %{S:%W{o*}%{!o*:-o %b.s}}%{!S:-o %{|!pipe:%g.s}} |\n\
486 %{!S:as %{R} %{j} %{J} %{h} %{d2} %a %Y\
487 %{c:%W{o*}%{!o*:-o %w%b.o}}%{!c:-o %d%w%u.o}\
488 %{!pipe:%g.s} %A\n }}}}"},
491 "%{!E:%eCompilation of header file requested} \
492 cpp %{nostdinc*} %{C} %{v} %{A*} %{I*} %{P} %I\
493 %{C:%{!E:%eGNU C does not support -C without using -E}}\
494 %{M} %{MM} %{MD:-MD %b.d} %{MMD:-MMD %b.d} \
495 -undef -D__GNUC__=2 %{ansi:-trigraphs -$ -D__STRICT_ANSI__}\
496 %{!undef:%{!ansi:%p} %P} %{trigraphs}\
497 %c %{O*:-D__OPTIMIZE__} %{traditional} %{ftraditional:-traditional}\
498 %{traditional-cpp:-traditional}\
499 %{g*} %{W*} %{w} %{pedantic*} %{H} %{d*} %C %{D*} %{U*} %{i*}\
505 "cpp -lang-c++ %{nostdinc*} %{C} %{v} %{A*} %{I*} %{P} %I\
506 %{C:%{!E:%eGNU C++ does not support -C without using -E}}\
507 %{M} %{MM} %{MD:-MD %b.d} %{MMD:-MMD %b.d} \
508 -undef -D__GNUC__=2 -D__GNUG__=2 -D__cplusplus \
509 %{ansi:-trigraphs -$ -D__STRICT_ANSI__} %{!undef:%{!ansi:%p} %P}\
510 %c %{O*:-D__OPTIMIZE__} %{traditional} %{ftraditional:-traditional}\
511 %{traditional-cpp:-traditional} %{trigraphs}\
512 %{g*} %{W*} %{w} %{pedantic*} %{H} %{d*} %C %{D*} %{U*} %{i*}\
513 %i %{!M:%{!MM:%{!E:%{!pipe:%g.i}}}}%{E:%W{o*}}%{M:%W{o*}}%{MM:%W{o*}} |\n",
514 "%{!M:%{!MM:%{!E:cc1plus %{!pipe:%g.i} %1 %2\
515 %{!Q:-quiet} -dumpbase %b.cc %{d*} %{m*} %{a}\
516 %{g*} %{O*} %{W*} %{w} %{pedantic*} %{ansi} %{traditional}\
517 %{v:-version} %{pg:-p} %{p} %{f*} %{+e*}\
519 %{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\
520 %{S:%W{o*}%{!o*:-o %b.s}}%{!S:-o %{|!pipe:%g.s}} |\n\
521 %{!S:as %{R} %{j} %{J} %{h} %{d2} %a %Y\
522 %{c:%W{o*}%{!o*:-o %w%b.o}}%{!c:-o %d%w%u.o}\
523 %{!pipe:%g.s} %A\n }}}}"},
524 {".i", "@cpp-output"},
526 "cc1 %i %1 %{!Q:-quiet} %{d*} %{m*} %{a}\
527 %{g*} %{O*} %{W*} %{w} %{pedantic*} %{ansi} %{traditional}\
528 %{v:-version} %{pg:-p} %{p} %{f*}\
530 %{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\
531 %{S:%W{o*}%{!o*:-o %b.s}}%{!S:-o %{|!pipe:%g.s}} |\n\
532 %{!S:as %{R} %{j} %{J} %{h} %{d2} %a %Y\
533 %{c:%W{o*}%{!o*:-o %w%b.o}}%{!c:-o %d%w%u.o} %{!pipe:%g.s} %A\n }"},
534 {".ii", "@c++-cpp-output"},
536 "cc1plus %i %1 %2 %{!Q:-quiet} %{d*} %{m*} %{a}\
537 %{g*} %{O*} %{W*} %{w} %{pedantic*} %{ansi} %{traditional}\
538 %{v:-version} %{pg:-p} %{p} %{f*} %{+e*}\
540 %{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\
541 %{S:%W{o*}%{!o*:-o %b.s}}%{!S:-o %{|!pipe:%g.s}} |\n\
542 %{!S:as %{R} %{j} %{J} %{h} %{d2} %a %Y\
543 %{c:%W{o*}%{!o*:-o %w%b.o}}%{!c:-o %d%w%u.o}\
544 %{!pipe:%g.s} %A\n }"},
545 {".s", "@assembler"},
547 "%{!S:as %{R} %{j} %{J} %{h} %{d2} %a %Y\
548 %{c:%W{o*}%{!o*:-o %w%b.o}}%{!c:-o %d%w%u.o} %i %A\n }"},
549 {".S", "@assembler-with-cpp"},
550 {"@assembler-with-cpp",
551 "cpp -lang-asm %{nostdinc*} %{C} %{v} %{A*} %{I*} %{P} %I\
552 %{C:%{!E:%eGNU C does not support -C without using -E}}\
553 %{M} %{MM} %{MD:-MD %b.d} %{MMD:-MMD %b.d} %{trigraphs} \
554 -undef -$ %{!undef:%p %P} -D__ASSEMBLER__ \
555 %c %{O*:-D__OPTIMIZE__} %{traditional} %{ftraditional:-traditional}\
556 %{traditional-cpp:-traditional}\
557 %{g*} %{W*} %{w} %{pedantic*} %{H} %{d*} %C %{D*} %{U*} %{i*}\
558 %i %{!M:%{!MM:%{!E:%{!pipe:%g.s}}}}%{E:%W{o*}}%{M:%W{o*}}%{MM:%W{o*}} |\n",
559 "%{!M:%{!MM:%{!E:%{!S:as %{R} %{j} %{J} %{h} %{d2} %a %Y\
560 %{c:%W{o*}%{!o*:-o %w%b.o}}%{!c:-o %d%w%u.o}\
561 %{!pipe:%g.s} %A\n }}}}"},
562 /* Mark end of table */
566 /* Number of elements in default_compilers, not counting the terminator. */
568 static int n_default_compilers
569 = (sizeof default_compilers / sizeof (struct compiler)) - 1;
571 /* Here is the spec for running the linker, after compiling all files. */
573 /* -u* was put back because both BSD and SysV seem to support it. */
574 /* %{static:} simply prevents an error message if the target machine
575 doesn't handle -static. */
576 #ifdef LINK_LIBGCC_SPECIAL_1
577 /* Have gcc do the search for libgcc.a, but generate -L options as usual. */
578 static char *link_command_spec = "\
580 %{!c:%{!M:%{!MM:%{!E:%{!S:ld %l %X %{o*} %{A} %{d} %{e*} %{m} %{N} %{n} \
581 %{r} %{s} %{T*} %{t} %{u*} %{x} %{z}\
582 %{!A:%{!nostartfiles:%{!nostdlib:%S}}} %{static:}\
583 %{L*} %D %o %{!nostdlib:libgcc.a%s %L libgcc.a%s %{!A:%E}}\n }}}}}}";
585 #ifdef LINK_LIBGCC_SPECIAL
586 /* Have gcc do the search for libgcc.a, and don't generate -L options. */
587 static char *link_command_spec = "\
589 %{!c:%{!M:%{!MM:%{!E:%{!S:ld %l %X %{o*} %{A} %{d} %{e*} %{m} %{N} %{n} \
590 %{r} %{s} %{T*} %{t} %{u*} %{x} %{z}\
591 %{!A:%{!nostartfiles:%{!nostdlib:%S}}} %{static:}\
592 %{L*} %o %{!nostdlib:libgcc.a%s %L libgcc.a%s %{!A:%E}}\n }}}}}}";
594 /* Use -L and have the linker do the search for -lgcc. */
595 static char *link_command_spec = "\
597 %{!c:%{!M:%{!MM:%{!E:%{!S:ld %l %X %{o*} %{A} %{d} %{e*} %{m} %{N} %{n} \
598 %{r} %{s} %{T*} %{t} %{u*} %{x} %{z}\
599 %{!A:%{!nostartfiles:%{!nostdlib:%S}}} %{static:}\
600 %{L*} %D %o %{!nostdlib:-lgcc %L -lgcc %{!A:%E}}\n }}}}}}";
604 /* A vector of options to give to the linker.
605 These options are accumulated by -Xlinker and -Wl,
606 and substituted into the linker command with %X. */
607 static int n_linker_options;
608 static char **linker_options;
610 /* A vector of options to give to the assembler.
611 These options are accumulated by -Wa,
612 and substituted into the assembler command with %X. */
613 static int n_assembler_options;
614 static char **assembler_options;
616 /* Define how to map long options into short ones. */
618 /* This structure describes one mapping. */
621 /* The long option's name. */
623 /* The equivalent short option. */
625 /* Argument info. A string of flag chars; NULL equals no options.
626 a => argument required.
627 o => argument optional.
628 j => join argument to equivalent, making one word.
629 * => allow other text after NAME as an argument. */
633 /* This is the table of mappings. Mappings are tried sequentially
634 for each option encountered; the first one that matches, wins. */
636 struct option_map option_map[] =
638 {"--profile-blocks", "-a", 0},
639 {"--target", "-b", "a"},
640 {"--compile", "-c", 0},
641 {"--dump", "-d", "a"},
642 {"--entry", "-e", 0},
643 {"--debug", "-g", "oj"},
644 {"--include", "-include", "a"},
645 {"--imacros", "-imacros", "a"},
646 {"--include-prefix", "-iprefix", "a"},
647 {"--include-directory-after", "-idirafter", "a"},
648 {"--include-with-prefix", "-iwithprefix", "a"},
649 {"--machine-", "-m", "*j"},
650 {"--machine", "-m", "aj"},
651 {"--no-standard-includes", "-nostdinc", 0},
652 {"--no-standard-libraries", "-nostdlib", 0},
653 {"--no-precompiled-includes", "-noprecomp", 0},
654 {"--output", "-o", "a"},
655 {"--profile", "-p", 0},
656 {"--quiet", "-q", 0},
657 {"--silent", "-q", 0},
658 {"--force-link", "-u", "a"},
659 {"--verbose", "-v", 0},
660 {"--no-warnings", "-w", 0},
661 {"--language", "-x", "a"},
663 {"--assert", "-A", "a"},
664 {"--prefix", "-B", "a"},
665 {"--comments", "-C", 0},
666 {"--define-macro", "-D", "a"},
667 {"--preprocess", "-E", 0},
668 {"--trace-includes", "-H", 0},
669 {"--include-directory", "-I", "a"},
670 {"--include-barrier", "-I-", 0},
671 {"--library-directory", "-L", "a"},
672 {"--dependencies", "-M", 0},
673 {"--user-dependencies", "-MM", 0},
674 {"--write-dependencies", "-MD", 0},
675 {"--write-user-dependencies", "-MMD", 0},
676 {"--optimize", "-O", "oj"},
677 {"--no-line-commands", "-P", 0},
678 {"--assemble", "-S", 0},
679 {"--undefine-macro", "-U", "a"},
680 {"--version", "-V", "a"},
681 {"--for-assembler", "-Wa", "a"},
682 {"--extra-warnings", "-W", 0},
683 {"--all-warnings", "-Wall", 0},
684 {"--warn-", "-W", "*j"},
685 {"--for-linker", "-Xlinker", "a"},
687 {"--ansi", "-ansi", 0},
688 {"--traditional", "-traditional", 0},
689 {"--traditional-cpp", "-traditional-cpp", 0},
690 {"--trigraphs", "-trigraphs", 0},
691 {"--pipe", "-pipe", 0},
692 {"--dumpbase", "-dumpbase", "a"},
693 {"--pedantic", "-pedantic", 0},
694 {"--pedantic-errors", "-pedantic-errors", 0},
695 {"--save-temps", "-save-temps", 0},
696 {"--print-libgcc-file-name", "-print-libgcc-file-name", 0},
697 {"--static", "-static", 0},
698 {"--shared", "-shared", 0},
699 {"--symbolic", "-symbolic", 0},
703 /* Translate the options described by *ARGCP and *ARGVP.
704 Make a new vector and store it back in *ARGVP,
705 and store its length in *ARGVC. */
708 translate_options (argcp, argvp)
714 char **argv = *argvp;
715 char **newv = (char **) xmalloc ((argc + 2) * 2 * sizeof (char *));
719 newv[newindex++] = argv[i++];
723 /* Translate -- options. */
724 if (argv[i][0] == '-' && argv[i][1] == '-')
726 /* Find a mapping that applies to this option. */
727 for (j = 0; j < sizeof (option_map) / sizeof (option_map[0]); j++)
729 int optlen = strlen (option_map[j].name);
730 int complen = strlen (argv[i]);
731 if (complen > optlen)
733 if (!strncmp (argv[i], option_map[j].name, complen))
735 int extra = strlen (argv[i]) > optlen;
740 /* If the option has an argument, accept that. */
741 if (argv[i][optlen] == '=')
742 arg = argv[i] + optlen + 1;
743 /* If this mapping allows extra text at end of name,
744 accept that as "argument". */
745 else if (index (option_map[j].arg_info, '*') != 0)
746 arg = argv[i] + optlen;
747 /* Otherwise, extra text at end means mismatch.
748 Try other mappings. */
752 else if (index (option_map[j].arg_info, '*') != 0)
753 error ("Incomplete `%s' option", option_map[j].name);
755 /* Handle arguments. */
756 if (index (option_map[j].arg_info, 'o') != 0)
761 error ("Missing argument to `%s' option",
766 else if (index (option_map[j].arg_info, 'a') == 0)
769 error ("Extraneous argument to `%s' option",
774 /* Store the translation as one argv elt or as two. */
775 if (arg != 0 && index (option_map[j].arg_info, 'j') != 0)
776 newv[newindex++] = concat (option_map[j].equivalent,
780 newv[newindex++] = option_map[j].equivalent;
781 newv[newindex++] = arg;
784 newv[newindex++] = option_map[j].equivalent;
791 /* Handle old-fashioned options--just copy them through,
792 with their arguments. */
793 else if (argv[i][0] == '-')
795 char *p = argv[i] + 1;
799 if (SWITCH_TAKES_ARG (c) > (p[1] != 0))
800 nskip += SWITCH_TAKES_ARG (c) - (p[1] != 0);
801 else if (WORD_SWITCH_TAKES_ARG (p))
802 nskip += WORD_SWITCH_TAKES_ARG (p);
806 newv[newindex++] = argv[i++];
811 /* Ordinary operands, or +e options. */
812 newv[newindex++] = argv[i++];
821 /* Read compilation specs from a file named FILENAME,
822 replacing the default ones.
824 A suffix which starts with `*' is a definition for
825 one of the machine-specific sub-specs. The "suffix" should be
826 *asm, *cc1, *cpp, *link, *startfile, *signed_char, etc.
827 The corresponding spec is stored in asm_spec, etc.,
828 rather than in the `compilers' vector.
830 Anything invalid in the file is a fatal error. */
833 read_specs (filename)
842 fprintf (stderr, "Reading specs from %s\n", filename);
844 /* Open and stat the file. */
845 desc = open (filename, 0, 0);
847 pfatal_with_name (filename);
848 if (stat (filename, &statbuf) < 0)
849 pfatal_with_name (filename);
851 /* Read contents of file into BUFFER. */
852 buffer = xmalloc ((unsigned) statbuf.st_size + 1);
853 read (desc, buffer, (unsigned) statbuf.st_size);
854 buffer[statbuf.st_size] = 0;
857 /* Scan BUFFER for specs, putting them in the vector. */
863 char *in, *out, *p1, *p2;
865 /* Advance P in BUFFER to the next nonblank nocomment line. */
866 p = skip_whitespace (p);
870 /* Find the colon that should end the suffix. */
872 while (*p1 && *p1 != ':' && *p1 != '\n') p1++;
873 /* The colon shouldn't be missing. */
875 fatal ("specs file malformed after %d characters", p1 - buffer);
876 /* Skip back over trailing whitespace. */
878 while (p2 > buffer && (p2[-1] == ' ' || p2[-1] == '\t')) p2--;
879 /* Copy the suffix to a string. */
880 suffix = save_string (p, p2 - p);
881 /* Find the next line. */
882 p = skip_whitespace (p1 + 1);
884 fatal ("specs file malformed after %d characters", p - buffer);
886 /* Find next blank line. */
887 while (*p1 && !(*p1 == '\n' && p1[1] == '\n')) p1++;
888 /* Specs end at the blank line and do not include the newline. */
889 spec = save_string (p, p1 - p);
892 /* Delete backslash-newline sequences from the spec. */
897 if (in[0] == '\\' && in[1] == '\n')
899 else if (in[0] == '#')
901 while (*in && *in != '\n') in++;
908 if (suffix[0] == '*')
910 if (! strcmp (suffix, "*link_command"))
911 link_command_spec = spec;
913 set_spec (suffix + 1, spec);
917 /* Add this pair to the vector. */
919 = ((struct compiler *)
920 xrealloc (compilers, (n_compilers + 2) * sizeof (struct compiler)));
921 compilers[n_compilers].suffix = suffix;
922 bzero (compilers[n_compilers].spec,
923 sizeof compilers[n_compilers].spec);
924 compilers[n_compilers].spec[0] = spec;
929 link_command_spec = spec;
932 if (link_command_spec == 0)
933 fatal ("spec file has no spec for linking");
942 /* A fully-blank line is a delimiter in the SPEC file and shouldn't
943 be considered whitespace. */
944 if (p[0] == '\n' && p[1] == '\n' && p[2] == '\n')
946 else if (*p == '\n' || *p == ' ' || *p == '\t')
950 while (*p != '\n') p++;
960 /* Structure to keep track of the specs that have been defined so far. These
961 are accessed using %(specname) or %[specname] in a compiler or link spec. */
965 char *name; /* Name of the spec. */
966 char *spec; /* The spec itself. */
967 struct spec_list *next; /* Next spec in linked list. */
970 /* List of specs that have been defined so far. */
972 static struct spec_list *specs = (struct spec_list *) 0;
974 /* Change the value of spec NAME to SPEC. If SPEC is empty, then the spec is
975 removed; If the spec starts with a + then SPEC is added to the end of the
979 set_spec (name, spec)
983 struct spec_list *sl;
986 /* See if the spec already exists */
987 for (sl = specs; sl; sl = sl->next)
988 if (strcmp (sl->name, name) == 0)
993 /* Not found - make it */
994 sl = (struct spec_list *) xmalloc (sizeof (struct spec_list));
995 sl->name = save_string (name, strlen (name));
996 sl->spec = save_string ("", 0);
1001 old_spec = sl->spec;
1002 if (name && spec[0] == '+' && isspace (spec[1]))
1003 sl->spec = concat (old_spec, spec + 1, "");
1005 sl->spec = save_string (spec, strlen (spec));
1007 if (! strcmp (name, "asm"))
1008 asm_spec = sl->spec;
1009 else if (! strcmp (name, "asm_final"))
1010 asm_final_spec = sl->spec;
1011 else if (! strcmp (name, "cc1"))
1012 cc1_spec = sl->spec;
1013 else if (! strcmp (name, "cc1plus"))
1014 cc1plus_spec = sl->spec;
1015 else if (! strcmp (name, "cpp"))
1016 cpp_spec = sl->spec;
1017 else if (! strcmp (name, "endfile"))
1018 endfile_spec = sl->spec;
1019 else if (! strcmp (name, "lib"))
1020 lib_spec = sl->spec;
1021 else if (! strcmp (name, "link"))
1022 link_spec = sl->spec;
1023 else if (! strcmp (name, "predefines"))
1024 cpp_predefines = sl->spec;
1025 else if (! strcmp (name, "signed_char"))
1026 signed_char_spec = sl->spec;
1027 else if (! strcmp (name, "startfile"))
1028 startfile_spec = sl->spec;
1029 else if (! strcmp (name, "switches_need_spaces"))
1030 switches_need_spaces = sl->spec;
1031 else if (! strcmp (name, "cross_compile"))
1032 cross_compile = atoi (sl->spec);
1033 /* Free the old spec */
1038 /* Accumulate a command (program name and args), and run it. */
1040 /* Vector of pointers to arguments in the current line of specifications. */
1042 static char **argbuf;
1044 /* Number of elements allocated in argbuf. */
1046 static int argbuf_length;
1048 /* Number of elements in argbuf currently in use (containing args). */
1050 static int argbuf_index;
1052 /* This is the list of suffixes and codes (%g/%u/%U) and the associated
1053 temp file. Used only if MKTEMP_EACH_FILE. */
1055 static struct temp_name {
1056 char *suffix; /* suffix associated with the code. */
1057 int length; /* strlen (suffix). */
1058 int unique; /* Indicates whether %g or %u/%U was used. */
1059 char *filename; /* associated filename. */
1060 int filename_length; /* strlen (filename). */
1061 struct temp_name *next;
1064 /* Number of commands executed so far. */
1066 static int execution_count;
1068 /* Number of commands that exited with a signal. */
1070 static int signal_count;
1072 /* Name with which this program was invoked. */
1074 static char *programname;
1076 /* Structures to keep track of prefixes to try when looking for files. */
1080 char *prefix; /* String to prepend to the path. */
1081 struct prefix_list *next; /* Next in linked list. */
1082 int require_machine_suffix; /* Don't use without machine_suffix. */
1083 /* 2 means try both machine_suffix and just_machine_suffix. */
1084 int *used_flag_ptr; /* 1 if a file was found with this prefix. */
1089 struct prefix_list *plist; /* List of prefixes to try */
1090 int max_len; /* Max length of a prefix in PLIST */
1091 char *name; /* Name of this list (used in config stuff) */
1094 /* List of prefixes to try when looking for executables. */
1096 static struct path_prefix exec_prefix = { 0, 0, "exec" };
1098 /* List of prefixes to try when looking for startup (crt0) files. */
1100 static struct path_prefix startfile_prefix = { 0, 0, "startfile" };
1102 /* List of prefixes to try when looking for libraries. */
1104 static struct path_prefix library_prefix = { 0, 0, "libraryfile" };
1106 /* Suffix to attach to directories searched for commands.
1107 This looks like `MACHINE/VERSION/'. */
1109 static char *machine_suffix = 0;
1111 /* Suffix to attach to directories searched for commands.
1112 This is just `MACHINE/'. */
1114 static char *just_machine_suffix = 0;
1116 /* Adjusted value of GCC_EXEC_PREFIX envvar. */
1118 static char *gcc_exec_prefix;
1120 /* Default prefixes to attach to command names. */
1122 #ifdef CROSS_COMPILE /* Don't use these prefixes for a cross compiler. */
1123 #undef MD_EXEC_PREFIX
1124 #undef MD_STARTFILE_PREFIX
1125 #undef MD_STARTFILE_PREFIX_1
1128 #ifndef STANDARD_EXEC_PREFIX
1129 #define STANDARD_EXEC_PREFIX "/usr/local/lib/gcc-lib/"
1130 #endif /* !defined STANDARD_EXEC_PREFIX */
1132 static char *standard_exec_prefix = STANDARD_EXEC_PREFIX;
1133 static char *standard_exec_prefix_1 = "/usr/lib/gcc/";
1134 #ifdef MD_EXEC_PREFIX
1135 static char *md_exec_prefix = MD_EXEC_PREFIX;
1138 #ifndef STANDARD_STARTFILE_PREFIX
1139 #define STANDARD_STARTFILE_PREFIX "/usr/local/lib/"
1140 #endif /* !defined STANDARD_STARTFILE_PREFIX */
1142 #ifdef MD_STARTFILE_PREFIX
1143 static char *md_startfile_prefix = MD_STARTFILE_PREFIX;
1145 #ifdef MD_STARTFILE_PREFIX_1
1146 static char *md_startfile_prefix_1 = MD_STARTFILE_PREFIX_1;
1148 static char *standard_startfile_prefix = STANDARD_STARTFILE_PREFIX;
1149 static char *standard_startfile_prefix_1 = "/lib/";
1150 static char *standard_startfile_prefix_2 = "/usr/lib/";
1152 #ifndef TOOLDIR_BASE_PREFIX
1153 #define TOOLDIR_BASE_PREFIX "/usr/local/"
1155 static char *tooldir_base_prefix = TOOLDIR_BASE_PREFIX;
1156 static char *tooldir_prefix;
1158 /* Clear out the vector of arguments (after a command is executed). */
1166 /* Add one argument to the vector at the end.
1167 This is done when a space is seen or at the end of the line.
1168 If DELETE_ALWAYS is nonzero, the arg is a filename
1169 and the file should be deleted eventually.
1170 If DELETE_FAILURE is nonzero, the arg is a filename
1171 and the file should be deleted if this compilation fails. */
1174 store_arg (arg, delete_always, delete_failure)
1176 int delete_always, delete_failure;
1178 if (argbuf_index + 1 == argbuf_length)
1180 argbuf = (char **) xrealloc (argbuf, (argbuf_length *= 2) * sizeof (char *));
1183 argbuf[argbuf_index++] = arg;
1184 argbuf[argbuf_index] = 0;
1186 if (delete_always || delete_failure)
1187 record_temp_file (arg, delete_always, delete_failure);
1190 /* Record the names of temporary files we tell compilers to write,
1191 and delete them at the end of the run. */
1193 /* This is the common prefix we use to make temp file names.
1194 It is chosen once for each run of this program.
1195 It is substituted into a spec by %g.
1196 Thus, all temp file names contain this prefix.
1197 In practice, all temp file names start with this prefix.
1199 This prefix comes from the envvar TMPDIR if it is defined;
1200 otherwise, from the P_tmpdir macro if that is defined;
1201 otherwise, in /usr/tmp or /tmp. */
1203 static char *temp_filename;
1205 /* Length of the prefix. */
1207 static int temp_filename_length;
1209 /* Define the list of temporary files to delete. */
1214 struct temp_file *next;
1217 /* Queue of files to delete on success or failure of compilation. */
1218 static struct temp_file *always_delete_queue;
1219 /* Queue of files to delete on failure of compilation. */
1220 static struct temp_file *failure_delete_queue;
1222 /* Record FILENAME as a file to be deleted automatically.
1223 ALWAYS_DELETE nonzero means delete it if all compilation succeeds;
1224 otherwise delete it in any case.
1225 FAIL_DELETE nonzero means delete it if a compilation step fails;
1226 otherwise delete it in any case. */
1229 record_temp_file (filename, always_delete, fail_delete)
1234 register char *name;
1235 name = xmalloc (strlen (filename) + 1);
1236 strcpy (name, filename);
1240 register struct temp_file *temp;
1241 for (temp = always_delete_queue; temp; temp = temp->next)
1242 if (! strcmp (name, temp->name))
1244 temp = (struct temp_file *) xmalloc (sizeof (struct temp_file));
1245 temp->next = always_delete_queue;
1247 always_delete_queue = temp;
1253 register struct temp_file *temp;
1254 for (temp = failure_delete_queue; temp; temp = temp->next)
1255 if (! strcmp (name, temp->name))
1257 temp = (struct temp_file *) xmalloc (sizeof (struct temp_file));
1258 temp->next = failure_delete_queue;
1260 failure_delete_queue = temp;
1265 /* Delete all the temporary files whose names we previously recorded. */
1268 delete_temp_files ()
1270 register struct temp_file *temp;
1272 for (temp = always_delete_queue; temp; temp = temp->next)
1276 printf ("Delete %s? (y or n) ", temp->name);
1280 while (getchar () != '\n') ;
1281 if (i == 'y' || i == 'Y')
1285 if (stat (temp->name, &st) >= 0)
1287 /* Delete only ordinary files. */
1288 if (S_ISREG (st.st_mode))
1289 if (unlink (temp->name) < 0)
1291 perror_with_name (temp->name);
1296 always_delete_queue = 0;
1299 /* Delete all the files to be deleted on error. */
1302 delete_failure_queue ()
1304 register struct temp_file *temp;
1306 for (temp = failure_delete_queue; temp; temp = temp->next)
1310 printf ("Delete %s? (y or n) ", temp->name);
1314 while (getchar () != '\n') ;
1315 if (i == 'y' || i == 'Y')
1318 if (unlink (temp->name) < 0)
1320 perror_with_name (temp->name);
1326 clear_failure_queue ()
1328 failure_delete_queue = 0;
1331 /* Compute a string to use as the base of all temporary file names.
1332 It is substituted for %g. */
1337 char *base = getenv ("TMPDIR");
1340 if (base == (char *)0)
1343 if (access (P_tmpdir, R_OK | W_OK) == 0)
1346 if (base == (char *)0)
1348 if (access ("/usr/tmp", R_OK | W_OK) == 0)
1355 len = strlen (base);
1356 temp_filename = xmalloc (len + sizeof("/ccXXXXXX"));
1357 strcpy (temp_filename, base);
1358 if (len > 0 && temp_filename[len-1] != '/')
1359 temp_filename[len++] = '/';
1360 strcpy (temp_filename + len, "ccXXXXXX");
1362 mktemp (temp_filename);
1363 temp_filename_length = strlen (temp_filename);
1364 if (temp_filename_length == 0)
1369 /* Routine to add variables to the environment. We do this to pass
1370 the pathname of the gcc driver, and the directories search to the
1371 collect2 program, which is being run as ld. This way, we can be
1372 sure of executing the right compiler when collect2 wants to build
1373 constructors and destructors. Since the environment variables we
1374 use come from an obstack, we don't have to worry about allocating
1382 #ifndef VMS /* nor about VMS */
1384 extern char **environ;
1385 char **old_environ = environ;
1389 int str_len = strlen (str);
1393 while ((ch = *p++) != '\0' && ch != '=')
1399 /* Search for replacing an existing environment variable, and
1400 count the number of total environment variables. */
1401 for (envp = old_environ; *envp; envp++)
1404 if (!strncmp (str, *envp, name_len))
1411 /* Add a new environment variable */
1412 environ = (char **) xmalloc (sizeof (char *) * (num_envs+2));
1414 bcopy (old_environ, environ+1, sizeof (char *) * (num_envs+1));
1419 #endif /* HAVE_PUTENV */
1422 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables for collect. */
1425 putenv_from_prefixes (paths, env_var)
1426 struct path_prefix *paths;
1429 int suffix_len = (machine_suffix) ? strlen (machine_suffix) : 0;
1431 = (just_machine_suffix) ? strlen (just_machine_suffix) : 0;
1432 int first_time = TRUE;
1433 struct prefix_list *pprefix;
1435 obstack_grow (&collect_obstack, env_var, strlen (env_var));
1437 for (pprefix = paths->plist; pprefix != 0; pprefix = pprefix->next)
1439 int len = strlen (pprefix->prefix);
1444 obstack_1grow (&collect_obstack, PATH_SEPARATOR);
1447 obstack_grow (&collect_obstack, pprefix->prefix, len);
1448 obstack_grow (&collect_obstack, machine_suffix, suffix_len);
1451 if (just_machine_suffix && pprefix->require_machine_suffix == 2)
1454 obstack_1grow (&collect_obstack, PATH_SEPARATOR);
1457 obstack_grow (&collect_obstack, pprefix->prefix, len);
1458 obstack_grow (&collect_obstack, just_machine_suffix,
1462 if (!pprefix->require_machine_suffix)
1465 obstack_1grow (&collect_obstack, PATH_SEPARATOR);
1468 obstack_grow (&collect_obstack, pprefix->prefix, len);
1471 obstack_1grow (&collect_obstack, '\0');
1472 putenv (obstack_finish (&collect_obstack));
1476 /* Search for NAME using the prefix list PREFIXES. MODE is passed to
1477 access to check permissions.
1478 Return 0 if not found, otherwise return its name, allocated with malloc. */
1481 find_a_file (pprefix, name, mode)
1482 struct path_prefix *pprefix;
1487 char *file_suffix = ((mode & X_OK) != 0 ? EXECUTABLE_SUFFIX : "");
1488 struct prefix_list *pl;
1489 int len = pprefix->max_len + strlen (name) + strlen (file_suffix) + 1;
1492 len += strlen (machine_suffix);
1494 temp = xmalloc (len);
1496 /* Determine the filename to execute (special case for absolute paths). */
1500 if (access (name, mode))
1502 strcpy (temp, name);
1507 for (pl = pprefix->plist; pl; pl = pl->next)
1511 strcpy (temp, pl->prefix);
1512 strcat (temp, machine_suffix);
1513 strcat (temp, name);
1514 if (access (temp, mode) == 0)
1516 if (pl->used_flag_ptr != 0)
1517 *pl->used_flag_ptr = 1;
1520 /* Some systems have a suffix for executable files.
1521 So try appending that. */
1522 if (file_suffix[0] != 0)
1524 strcat (temp, file_suffix);
1525 if (access (temp, mode) == 0)
1527 if (pl->used_flag_ptr != 0)
1528 *pl->used_flag_ptr = 1;
1533 /* Certain prefixes are tried with just the machine type,
1534 not the version. This is used for finding as, ld, etc. */
1535 if (just_machine_suffix && pl->require_machine_suffix == 2)
1537 strcpy (temp, pl->prefix);
1538 strcat (temp, just_machine_suffix);
1539 strcat (temp, name);
1540 if (access (temp, mode) == 0)
1542 if (pl->used_flag_ptr != 0)
1543 *pl->used_flag_ptr = 1;
1546 /* Some systems have a suffix for executable files.
1547 So try appending that. */
1548 if (file_suffix[0] != 0)
1550 strcat (temp, file_suffix);
1551 if (access (temp, mode) == 0)
1553 if (pl->used_flag_ptr != 0)
1554 *pl->used_flag_ptr = 1;
1559 /* Certain prefixes can't be used without the machine suffix
1560 when the machine or version is explicitly specified. */
1561 if (!pl->require_machine_suffix)
1563 strcpy (temp, pl->prefix);
1564 strcat (temp, name);
1565 if (access (temp, mode) == 0)
1567 if (pl->used_flag_ptr != 0)
1568 *pl->used_flag_ptr = 1;
1571 /* Some systems have a suffix for executable files.
1572 So try appending that. */
1573 if (file_suffix[0] != 0)
1575 strcat (temp, file_suffix);
1576 if (access (temp, mode) == 0)
1578 if (pl->used_flag_ptr != 0)
1579 *pl->used_flag_ptr = 1;
1590 /* Add an entry for PREFIX in PLIST. If FIRST is set, it goes
1591 at the start of the list, otherwise it goes at the end.
1593 If WARN is nonzero, we will warn if no file is found
1594 through this prefix. WARN should point to an int
1595 which will be set to 1 if this entry is used.
1597 REQUIRE_MACHINE_SUFFIX is 1 if this prefix can't be used without
1598 the complete value of machine_suffix.
1599 2 means try both machine_suffix and just_machine_suffix. */
1602 add_prefix (pprefix, prefix, first, require_machine_suffix, warn)
1603 struct path_prefix *pprefix;
1606 int require_machine_suffix;
1609 struct prefix_list *pl, **prev;
1612 if (!first && pprefix->plist)
1614 for (pl = pprefix->plist; pl->next; pl = pl->next)
1619 prev = &pprefix->plist;
1621 /* Keep track of the longest prefix */
1623 len = strlen (prefix);
1624 if (len > pprefix->max_len)
1625 pprefix->max_len = len;
1627 pl = (struct prefix_list *) xmalloc (sizeof (struct prefix_list));
1628 pl->prefix = save_string (prefix, len);
1629 pl->require_machine_suffix = require_machine_suffix;
1630 pl->used_flag_ptr = warn;
1637 pl->next = (struct prefix_list *) 0;
1641 /* Print warnings for any prefixes in the list PPREFIX that were not used. */
1644 unused_prefix_warnings (pprefix)
1645 struct path_prefix *pprefix;
1647 struct prefix_list *pl = pprefix->plist;
1651 if (pl->used_flag_ptr != 0 && !*pl->used_flag_ptr)
1653 error ("file path prefix `%s' never used",
1655 /* Prevent duplicate warnings. */
1656 *pl->used_flag_ptr = 1;
1662 /* Get rid of all prefixes built up so far in *PLISTP. */
1665 free_path_prefix (pprefix)
1666 struct path_prefix *pprefix;
1668 struct prefix_list *pl = pprefix->plist;
1669 struct prefix_list *temp;
1675 free (temp->prefix);
1676 free ((char *) temp);
1678 pprefix->plist = (struct prefix_list *) 0;
1681 /* stdin file number. */
1682 #define STDIN_FILE_NO 0
1684 /* stdout file number. */
1685 #define STDOUT_FILE_NO 1
1687 /* value of `pipe': port index for reading. */
1690 /* value of `pipe': port index for writing. */
1691 #define WRITE_PORT 1
1693 /* Pipe waiting from last process, to be used as input for the next one.
1694 Value is STDIN_FILE_NO if no pipe is waiting
1695 (i.e. the next command is the first of a group). */
1697 static int last_pipe_input;
1699 /* Fork one piped subcommand. FUNC is the system call to use
1700 (either execv or execvp). ARGV is the arg vector to use.
1701 NOT_LAST is nonzero if this is not the last subcommand
1702 (i.e. its output should be piped to the next one.) */
1707 /* Declare these to avoid compilation error. They won't be called. */
1708 int execv(const char *a, const char **b){}
1709 int execvp(const char *a, const char **b){}
1712 pexecute (search_flag, program, argv, not_last)
1722 scmd = (char *)malloc (strlen (program) + strlen (temp_filename) + 6);
1723 sprintf (scmd, "%s @%s.gp", program, temp_filename);
1724 argfile = fopen (scmd+strlen (program) + 2, "w");
1726 pfatal_with_name (scmd + strlen (program) + 2);
1728 for (i=1; argv[i]; i++)
1731 for (cp = argv[i]; *cp; cp++)
1733 if (*cp == '"' || *cp == '\'' || *cp == '\\' || isspace (*cp))
1734 fputc ('\\', argfile);
1735 fputc (*cp, argfile);
1737 fputc ('\n', argfile);
1743 remove (scmd + strlen (program) + 2);
1747 #else /* not __MSDOS__ */
1750 pexecute (search_flag, program, argv, not_last)
1756 int (*func)() = (search_flag ? execv : execvp);
1759 int input_desc = last_pipe_input;
1760 int output_desc = STDOUT_FILE_NO;
1761 int retries, sleep_interval;
1763 /* If this isn't the last process, make a pipe for its output,
1764 and record it as waiting to be the input to the next process. */
1768 if (pipe (pdes) < 0)
1769 pfatal_with_name ("pipe");
1770 output_desc = pdes[WRITE_PORT];
1771 last_pipe_input = pdes[READ_PORT];
1774 last_pipe_input = STDIN_FILE_NO;
1776 /* Fork a subprocess; wait and retry if it fails. */
1778 for (retries = 0; retries < 4; retries++)
1783 sleep (sleep_interval);
1784 sleep_interval *= 2;
1791 pfatal_with_name ("fork");
1793 pfatal_with_name ("vfork");
1799 /* Move the input and output pipes into place, if nec. */
1800 if (input_desc != STDIN_FILE_NO)
1802 close (STDIN_FILE_NO);
1806 if (output_desc != STDOUT_FILE_NO)
1808 close (STDOUT_FILE_NO);
1810 close (output_desc);
1813 /* Close the parent's descs that aren't wanted here. */
1814 if (last_pipe_input != STDIN_FILE_NO)
1815 close (last_pipe_input);
1817 /* Exec the program. */
1818 (*func) (program, argv);
1819 perror_exec (program);
1825 /* In the parent, after forking.
1826 Close the descriptors that we made for this child. */
1827 if (input_desc != STDIN_FILE_NO)
1829 if (output_desc != STDOUT_FILE_NO)
1830 close (output_desc);
1832 /* Return child's process number. */
1837 #endif /* not __MSDOS__ */
1841 pexecute (search_flag, program, argv, not_last)
1847 return (search_flag ? spawnv : spawnvp) (1, program, argv);
1849 #endif /* not OS2 */
1851 /* Execute the command specified by the arguments on the current line of spec.
1852 When using pipes, this includes several piped-together commands
1853 with `|' between them.
1855 Return 0 if successful, -1 if failed. */
1861 int n_commands; /* # of command. */
1865 char *prog; /* program name. */
1866 char **argv; /* vector of args. */
1867 int pid; /* pid of process for this command. */
1870 struct command *commands; /* each command buffer with above info. */
1872 /* Count # of piped commands. */
1873 for (n_commands = 1, i = 0; i < argbuf_index; i++)
1874 if (strcmp (argbuf[i], "|") == 0)
1877 /* Get storage for each command. */
1879 = (struct command *) alloca (n_commands * sizeof (struct command));
1881 /* Split argbuf into its separate piped processes,
1882 and record info about each one.
1883 Also search for the programs that are to be run. */
1885 commands[0].prog = argbuf[0]; /* first command. */
1886 commands[0].argv = &argbuf[0];
1887 string = find_a_file (&exec_prefix, commands[0].prog, X_OK);
1889 commands[0].argv[0] = string;
1891 for (n_commands = 1, i = 0; i < argbuf_index; i++)
1892 if (strcmp (argbuf[i], "|") == 0)
1893 { /* each command. */
1895 fatal ("-pipe not supported under MS-DOS");
1897 argbuf[i] = 0; /* termination of command args. */
1898 commands[n_commands].prog = argbuf[i + 1];
1899 commands[n_commands].argv = &argbuf[i + 1];
1900 string = find_a_file (&exec_prefix, commands[n_commands].prog, X_OK);
1902 commands[n_commands].argv[0] = string;
1906 argbuf[argbuf_index] = 0;
1908 /* If -v, print what we are about to do, and maybe query. */
1912 /* Print each piped command as a separate line. */
1913 for (i = 0; i < n_commands ; i++)
1917 for (j = commands[i].argv; *j; j++)
1918 fprintf (stderr, " %s", *j);
1920 /* Print a pipe symbol after all but the last command. */
1921 if (i + 1 != n_commands)
1922 fprintf (stderr, " |");
1923 fprintf (stderr, "\n");
1927 fprintf (stderr, "\nGo ahead? (y or n) ");
1931 while (getchar () != '\n') ;
1932 if (i != 'y' && i != 'Y')
1937 /* Run each piped subprocess. */
1939 last_pipe_input = STDIN_FILE_NO;
1940 for (i = 0; i < n_commands; i++)
1942 char *string = commands[i].argv[0];
1944 commands[i].pid = pexecute (string != commands[i].prog,
1945 string, commands[i].argv,
1946 i + 1 < n_commands);
1948 if (string != commands[i].prog)
1954 /* Wait for all the subprocesses to finish.
1955 We don't care what order they finish in;
1956 we know that N_COMMANDS waits will get them all. */
1961 for (i = 0; i < n_commands; i++)
1968 status = pid = commands[i].pid;
1970 pid = wait (&status);
1978 for (j = 0; j < n_commands; j++)
1979 if (commands[j].pid == pid)
1980 prog = commands[j].prog;
1982 if ((status & 0x7F) != 0)
1984 fatal ("Internal compiler error: program %s got fatal signal %d",
1985 prog, (status & 0x7F));
1988 if (((status & 0xFF00) >> 8) >= MIN_FATAL_STATUS)
1996 /* Find all the switches given to us
1997 and make a vector describing them.
1998 The elements of the vector are strings, one per switch given.
1999 If a switch uses following arguments, then the `part1' field
2000 is the switch itself and the `args' field
2001 is a null-terminated vector containing the following arguments.
2002 The `valid' field is nonzero if any spec has looked at this switch;
2003 if it remains zero at the end of the run, it must be meaningless. */
2012 static struct switchstr *switches;
2014 static int n_switches;
2022 /* Also a vector of input files specified. */
2024 static struct infile *infiles;
2026 static int n_infiles;
2028 /* And a vector of corresponding output files is made up later. */
2030 static char **outfiles;
2032 /* Create the vector `switches' and its contents.
2033 Store its length in `n_switches'. */
2036 process_command (argc, argv)
2042 char *spec_lang = 0;
2043 int last_language_n_infiles;
2045 gcc_exec_prefix = getenv ("GCC_EXEC_PREFIX");
2050 /* Default for -V is our version number, ending at first space. */
2051 spec_version = save_string (version_string, strlen (version_string));
2052 for (temp = spec_version; *temp && *temp != ' '; temp++);
2053 if (*temp) *temp = '\0';
2055 /* Set up the default search paths. */
2057 if (gcc_exec_prefix)
2059 add_prefix (&exec_prefix, gcc_exec_prefix, 0, 0, NULL_PTR);
2060 add_prefix (&startfile_prefix, gcc_exec_prefix, 0, 0, NULL_PTR);
2063 /* COMPILER_PATH and LIBRARY_PATH have values
2064 that are lists of directory names with colons. */
2066 temp = getenv ("COMPILER_PATH");
2069 char *startp, *endp;
2070 char *nstore = (char *) alloca (strlen (temp) + 3);
2072 startp = endp = temp;
2075 if (*endp == PATH_SEPARATOR || *endp == 0)
2077 strncpy (nstore, startp, endp-startp);
2080 strcpy (nstore, "./");
2082 else if (endp[-1] != '/')
2084 nstore[endp-startp] = '/';
2085 nstore[endp-startp+1] = 0;
2088 nstore[endp-startp] = 0;
2089 add_prefix (&exec_prefix, nstore, 0, 0, NULL_PTR);
2092 endp = startp = endp + 1;
2099 temp = getenv ("LIBRARY_PATH");
2102 char *startp, *endp;
2103 char *nstore = (char *) alloca (strlen (temp) + 3);
2105 startp = endp = temp;
2108 if (*endp == PATH_SEPARATOR || *endp == 0)
2110 strncpy (nstore, startp, endp-startp);
2113 strcpy (nstore, "./");
2115 else if (endp[-1] != '/')
2117 nstore[endp-startp] = '/';
2118 nstore[endp-startp+1] = 0;
2121 nstore[endp-startp] = 0;
2122 add_prefix (&startfile_prefix, nstore, 0, 0, NULL_PTR);
2123 /* Make separate list of dirs that came from LIBRARY_PATH. */
2124 add_prefix (&library_prefix, nstore, 0, 0, NULL_PTR);
2127 endp = startp = endp + 1;
2134 /* Use LPATH like LIBRARY_PATH (for the CMU build program). */
2135 temp = getenv ("LPATH");
2138 char *startp, *endp;
2139 char *nstore = (char *) alloca (strlen (temp) + 3);
2141 startp = endp = temp;
2144 if (*endp == PATH_SEPARATOR || *endp == 0)
2146 strncpy (nstore, startp, endp-startp);
2149 strcpy (nstore, "./");
2151 else if (endp[-1] != '/')
2153 nstore[endp-startp] = '/';
2154 nstore[endp-startp+1] = 0;
2157 nstore[endp-startp] = 0;
2158 add_prefix (&startfile_prefix, nstore, 0, 0, NULL_PTR);
2159 /* Make separate list of dirs that came from LIBRARY_PATH. */
2160 add_prefix (&library_prefix, nstore, 0, 0, NULL_PTR);
2163 endp = startp = endp + 1;
2170 /* Convert new-style -- options to old-style. */
2171 translate_options (&argc, &argv);
2173 /* Scan argv twice. Here, the first time, just count how many switches
2174 there will be in their vector, and how many input files in theirs.
2175 Here we also parse the switches that cc itself uses (e.g. -v). */
2177 for (i = 1; i < argc; i++)
2179 if (! strcmp (argv[i], "-dumpspecs"))
2181 printf ("*asm:\n%s\n\n", asm_spec);
2182 printf ("*asm_final:\n%s\n\n", asm_final_spec);
2183 printf ("*cpp:\n%s\n\n", cpp_spec);
2184 printf ("*cc1:\n%s\n\n", cc1_spec);
2185 printf ("*cc1plus:\n%s\n\n", cc1plus_spec);
2186 printf ("*endfile:\n%s\n\n", endfile_spec);
2187 printf ("*link:\n%s\n\n", link_spec);
2188 printf ("*lib:\n%s\n\n", lib_spec);
2189 printf ("*startfile:\n%s\n\n", startfile_spec);
2190 printf ("*switches_need_spaces:\n%s\n\n", switches_need_spaces);
2191 printf ("*signed_char:\n%s\n\n", signed_char_spec);
2192 printf ("*predefines:\n%s\n\n", cpp_predefines);
2193 printf ("*cross_compile:\n%d\n\n", cross_compile);
2197 else if (! strcmp (argv[i], "-dumpversion"))
2199 printf ("%s\n", version_string);
2202 else if (! strcmp (argv[i], "-print-libgcc-file-name"))
2204 print_libgcc_file_name = 1;
2206 else if (! strcmp (argv[i], "-Xlinker"))
2208 /* Pass the argument of this option to the linker when we link. */
2211 fatal ("argument to `-Xlinker' is missing");
2214 if (!linker_options)
2216 = (char **) xmalloc (n_linker_options * sizeof (char **));
2219 = (char **) xrealloc (linker_options,
2220 n_linker_options * sizeof (char **));
2222 linker_options[n_linker_options - 1] = argv[++i];
2224 else if (! strncmp (argv[i], "-Wl,", 4))
2227 /* Pass the rest of this option to the linker when we link. */
2230 if (!linker_options)
2232 = (char **) xmalloc (n_linker_options * sizeof (char **));
2235 = (char **) xrealloc (linker_options,
2236 n_linker_options * sizeof (char **));
2238 /* Split the argument at commas. */
2240 for (j = 4; argv[i][j]; j++)
2241 if (argv[i][j] == ',')
2243 linker_options[n_linker_options - 1]
2244 = save_string (argv[i] + prev, j - prev);
2247 = (char **) xrealloc (linker_options,
2248 n_linker_options * sizeof (char **));
2251 /* Record the part after the last comma. */
2252 linker_options[n_linker_options - 1] = argv[i] + prev;
2254 else if (! strncmp (argv[i], "-Wa,", 4))
2257 /* Pass the rest of this option to the assembler. */
2259 n_assembler_options++;
2260 if (!assembler_options)
2262 = (char **) xmalloc (n_assembler_options * sizeof (char **));
2265 = (char **) xrealloc (assembler_options,
2266 n_assembler_options * sizeof (char **));
2268 /* Split the argument at commas. */
2270 for (j = 4; argv[i][j]; j++)
2271 if (argv[i][j] == ',')
2273 assembler_options[n_assembler_options - 1]
2274 = save_string (argv[i] + prev, j - prev);
2275 n_assembler_options++;
2277 = (char **) xrealloc (assembler_options,
2278 n_assembler_options * sizeof (char **));
2281 /* Record the part after the last comma. */
2282 assembler_options[n_assembler_options - 1] = argv[i] + prev;
2284 else if (argv[i][0] == '+' && argv[i][1] == 'e')
2285 /* The +e options to the C++ front-end. */
2287 else if (argv[i][0] == '-' && argv[i][1] != 0 && argv[i][1] != 'l')
2289 register char *p = &argv[i][1];
2290 register int c = *p;
2295 if (p[1] == 0 && i + 1 == argc)
2296 fatal ("argument to `-b' is missing");
2298 spec_machine = argv[++i];
2300 spec_machine = p + 1;
2305 int *temp = (int *) xmalloc (sizeof (int));
2307 if (p[1] == 0 && i + 1 == argc)
2308 fatal ("argument to `-B' is missing");
2313 add_prefix (&exec_prefix, value, 1, 0, temp);
2314 add_prefix (&startfile_prefix, value, 1, 0, temp);
2318 case 'v': /* Print our subcommands and print versions. */
2320 /* If they do anything other than exactly `-v', don't set
2321 verbose_flag; rather, continue on to give the error. */
2328 if (p[1] == 0 && i + 1 == argc)
2329 fatal ("argument to `-V' is missing");
2331 spec_version = argv[++i];
2333 spec_version = p + 1;
2337 if (!strcmp (p, "save-temps"))
2339 save_temps_flag = 1;
2346 if (SWITCH_TAKES_ARG (c) > (p[1] != 0))
2347 i += SWITCH_TAKES_ARG (c) - (p[1] != 0);
2348 else if (WORD_SWITCH_TAKES_ARG (p))
2349 i += WORD_SWITCH_TAKES_ARG (p);
2356 tooldir_prefix = concat (tooldir_base_prefix, spec_machine, "/");
2358 /* If tooldir is relative, base it on exec_prefix. A relative
2359 tooldir lets us move the installed tree as a unit. */
2361 if (*tooldir_prefix != '/')
2363 if (gcc_exec_prefix)
2364 tooldir_prefix = concat (concat (gcc_exec_prefix, spec_machine, "/"),
2365 concat (spec_version, "/", tooldir_prefix),
2368 tooldir_prefix = concat (concat (standard_exec_prefix, spec_machine, "/"),
2369 concat (spec_version, "/", tooldir_prefix),
2374 /* Set up the search paths before we go looking for config files. */
2376 /* These come before the md prefixes so that we will find gcc's subcommands
2377 (such as cpp) rather than those of the host system. */
2378 /* Use 2 as fourth arg meaning try just the machine as a suffix,
2379 as well as trying the machine and the version. */
2380 add_prefix (&exec_prefix, standard_exec_prefix, 0, 2, NULL_PTR);
2381 add_prefix (&exec_prefix, standard_exec_prefix_1, 0, 2, NULL_PTR);
2383 add_prefix (&startfile_prefix, standard_exec_prefix, 0, 1, NULL_PTR);
2384 add_prefix (&startfile_prefix, standard_exec_prefix_1, 0, 1, NULL_PTR);
2386 add_prefix (&exec_prefix, concat (tooldir_prefix, "bin", "/"),
2388 add_prefix (&startfile_prefix, concat (tooldir_prefix, "lib", "/"),
2391 /* More prefixes are enabled in main, after we read the specs file
2392 and determine whether this is cross-compilation or not. */
2395 /* Then create the space for the vectors and scan again. */
2397 switches = ((struct switchstr *)
2398 xmalloc ((n_switches + 1) * sizeof (struct switchstr)));
2399 infiles = (struct infile *) xmalloc ((n_infiles + 1) * sizeof (struct infile));
2402 last_language_n_infiles = -1;
2404 /* This, time, copy the text of each switch and store a pointer
2405 to the copy in the vector of switches.
2406 Store all the infiles in their vector. */
2408 for (i = 1; i < argc; i++)
2410 /* Just skip the switches that were handled by the preceding loop. */
2411 if (!strcmp (argv[i], "-Xlinker"))
2413 else if (! strncmp (argv[i], "-Wl,", 4))
2415 else if (! strncmp (argv[i], "-Wa,", 4))
2417 else if (! strcmp (argv[i], "-print-libgcc-file-name"))
2419 else if (argv[i][0] == '+' && argv[i][1] == 'e')
2421 /* Compensate for the +e options to the C++ front-end;
2422 they're there simply for cfront call-compatibility. We do
2423 some magic in default_compilers to pass them down properly.
2424 Note we deliberately start at the `+' here, to avoid passing
2425 -e0 or -e1 down into the linker. */
2426 switches[n_switches].part1 = &argv[i][0];
2427 switches[n_switches].args = 0;
2428 switches[n_switches].valid = 0;
2431 else if (argv[i][0] == '-' && argv[i][1] != 0 && argv[i][1] != 'l')
2433 register char *p = &argv[i][1];
2434 register int c = *p;
2436 if (c == 'B' || c == 'b' || c == 'V')
2438 /* Skip a separate arg, if any. */
2445 if (p[1] == 0 && i + 1 == argc)
2446 fatal ("argument to `-x' is missing");
2448 spec_lang = argv[++i];
2451 if (! strcmp (spec_lang, "none"))
2452 /* Suppress the warning if -xnone comes after the last input file,
2453 because alternate command interfaces like g++ might find it
2454 useful to place -xnone after each input file. */
2457 last_language_n_infiles = n_infiles;
2460 switches[n_switches].part1 = p;
2461 /* Deal with option arguments in separate argv elements. */
2462 if ((SWITCH_TAKES_ARG (c) > (p[1] != 0))
2463 || WORD_SWITCH_TAKES_ARG (p)) {
2465 int n_args = WORD_SWITCH_TAKES_ARG (p);
2468 /* Count only the option arguments in separate argv elements. */
2469 n_args = SWITCH_TAKES_ARG (c) - (p[1] != 0);
2471 if (i + n_args >= argc)
2472 fatal ("argument to `-%s' is missing", p);
2473 switches[n_switches].args
2474 = (char **) xmalloc ((n_args + 1) * sizeof (char *));
2476 switches[n_switches].args[j++] = argv[++i];
2477 /* Null-terminate the vector. */
2478 switches[n_switches].args[j] = 0;
2479 } else if (*switches_need_spaces != 0 && (c == 'o' || c == 'L')) {
2480 /* On some systems, ld cannot handle -o or -L without space.
2481 So split the -o or -L from its argument. */
2482 switches[n_switches].part1 = (c == 'o' ? "o" : "L");
2483 switches[n_switches].args = (char **) xmalloc (2 * sizeof (char *));
2484 switches[n_switches].args[0] = xmalloc (strlen (p));
2485 strcpy (switches[n_switches].args[0], &p[1]);
2486 switches[n_switches].args[1] = 0;
2488 switches[n_switches].args = 0;
2489 switches[n_switches].valid = 0;
2490 /* This is always valid, since gcc.c itself understands it. */
2491 if (!strcmp (p, "save-temps"))
2492 switches[n_switches].valid = 1;
2497 if ((argv[i][0] != '-' || argv[i][1] != 'l')
2498 && access (argv[i], R_OK) < 0)
2500 perror_with_name (argv[i]);
2505 infiles[n_infiles].language = spec_lang;
2506 infiles[n_infiles++].name = argv[i];
2511 if (n_infiles == last_language_n_infiles)
2512 error ("Warning: `-x %s' after last input file has no effect", spec_lang);
2514 switches[n_switches].part1 = 0;
2515 infiles[n_infiles].name = 0;
2517 /* If we have a GCC_EXEC_PREFIX envvar, modify it for cpp's sake. */
2518 if (gcc_exec_prefix)
2520 temp = (char *) xmalloc (strlen (gcc_exec_prefix) + strlen (spec_version)
2521 + strlen (spec_machine) + 3);
2522 strcpy (temp, gcc_exec_prefix);
2523 strcat (temp, spec_machine);
2525 strcat (temp, spec_version);
2527 gcc_exec_prefix = temp;
2531 /* Process a spec string, accumulating and running commands. */
2533 /* These variables describe the input file name.
2534 input_file_number is the index on outfiles of this file,
2535 so that the output file name can be stored for later use by %o.
2536 input_basename is the start of the part of the input file
2537 sans all directory names, and basename_length is the number
2538 of characters starting there excluding the suffix .c or whatever. */
2540 static char *input_filename;
2541 static int input_file_number;
2542 static int input_filename_length;
2543 static int basename_length;
2544 static char *input_basename;
2545 static char *input_suffix;
2547 /* These are variables used within do_spec and do_spec_1. */
2549 /* Nonzero if an arg has been started and not yet terminated
2550 (with space, tab or newline). */
2551 static int arg_going;
2553 /* Nonzero means %d or %g has been seen; the next arg to be terminated
2554 is a temporary file name. */
2555 static int delete_this_arg;
2557 /* Nonzero means %w has been seen; the next arg to be terminated
2558 is the output file name of this compilation. */
2559 static int this_is_output_file;
2561 /* Nonzero means %s has been seen; the next arg to be terminated
2562 is the name of a library file and we should try the standard
2563 search dirs for it. */
2564 static int this_is_library_file;
2566 /* Nonzero means that the input of this command is coming from a pipe. */
2567 static int input_from_pipe;
2569 /* Process the spec SPEC and run the commands specified therein.
2570 Returns 0 if the spec is successfully processed; -1 if failed. */
2580 delete_this_arg = 0;
2581 this_is_output_file = 0;
2582 this_is_library_file = 0;
2583 input_from_pipe = 0;
2585 value = do_spec_1 (spec, 0, NULL_PTR);
2587 /* Force out any unfinished command.
2588 If -pipe, this forces out the last command if it ended in `|'. */
2591 if (argbuf_index > 0 && !strcmp (argbuf[argbuf_index - 1], "|"))
2594 if (argbuf_index > 0)
2601 /* Process the sub-spec SPEC as a portion of a larger spec.
2602 This is like processing a whole spec except that we do
2603 not initialize at the beginning and we do not supply a
2604 newline by default at the end.
2605 INSWITCH nonzero means don't process %-sequences in SPEC;
2606 in this case, % is treated as an ordinary character.
2607 This is used while substituting switches.
2608 INSWITCH nonzero also causes SPC not to terminate an argument.
2610 Value is zero unless a line was finished
2611 and the command on that line reported an error. */
2614 do_spec_1 (spec, inswitch, soft_matched_part)
2617 char *soft_matched_part;
2619 register char *p = spec;
2626 /* If substituting a switch, treat all chars like letters.
2627 Otherwise, NL, SPC, TAB and % are special. */
2628 switch (inswitch ? 'a' : c)
2631 /* End of line: finish any pending argument,
2632 then run the pending command if one has been started. */
2635 obstack_1grow (&obstack, 0);
2636 string = obstack_finish (&obstack);
2637 if (this_is_library_file)
2638 string = find_file (string);
2639 store_arg (string, delete_this_arg, this_is_output_file);
2640 if (this_is_output_file)
2641 outfiles[input_file_number] = string;
2645 if (argbuf_index > 0 && !strcmp (argbuf[argbuf_index - 1], "|"))
2648 for (i = 0; i < n_switches; i++)
2649 if (!strcmp (switches[i].part1, "pipe"))
2652 /* A `|' before the newline means use a pipe here,
2653 but only if -pipe was specified.
2654 Otherwise, execute now and don't pass the `|' as an arg. */
2657 input_from_pipe = 1;
2658 switches[i].valid = 1;
2665 if (argbuf_index > 0)
2671 /* Reinitialize for a new command, and for a new argument. */
2674 delete_this_arg = 0;
2675 this_is_output_file = 0;
2676 this_is_library_file = 0;
2677 input_from_pipe = 0;
2681 /* End any pending argument. */
2684 obstack_1grow (&obstack, 0);
2685 string = obstack_finish (&obstack);
2686 if (this_is_library_file)
2687 string = find_file (string);
2688 store_arg (string, delete_this_arg, this_is_output_file);
2689 if (this_is_output_file)
2690 outfiles[input_file_number] = string;
2694 obstack_1grow (&obstack, c);
2700 /* Space or tab ends an argument if one is pending. */
2703 obstack_1grow (&obstack, 0);
2704 string = obstack_finish (&obstack);
2705 if (this_is_library_file)
2706 string = find_file (string);
2707 store_arg (string, delete_this_arg, this_is_output_file);
2708 if (this_is_output_file)
2709 outfiles[input_file_number] = string;
2711 /* Reinitialize for a new argument. */
2713 delete_this_arg = 0;
2714 this_is_output_file = 0;
2715 this_is_library_file = 0;
2722 fatal ("Invalid specification! Bug in cc.");
2725 obstack_grow (&obstack, input_basename, basename_length);
2730 delete_this_arg = 2;
2733 /* Dump out the directories specified with LIBRARY_PATH,
2734 followed by the absolute directories
2735 that we search for startfiles. */
2737 for (i = 0; i < 2; i++)
2739 struct prefix_list *pl
2740 = (i == 0 ? library_prefix.plist : startfile_prefix.plist);
2742 char *buffer = (char *) xmalloc (bufsize);
2745 for (; pl; pl = pl->next)
2747 #ifdef RELATIVE_PREFIX_NOT_LINKDIR
2748 /* Used on systems which record the specified -L dirs
2749 and use them to search for dynamic linking. */
2750 /* Relative directories always come from -B,
2751 and it is better not to use them for searching
2752 at run time. In particular, stage1 loses */
2753 if (pl->prefix[0] != '/')
2758 if (is_linker_dir (pl->prefix, machine_suffix))
2760 do_spec_1 ("-L", 0, NULL_PTR);
2761 #ifdef SPACE_AFTER_L_OPTION
2762 do_spec_1 (" ", 0, NULL_PTR);
2764 do_spec_1 (pl->prefix, 1, NULL_PTR);
2765 /* Remove slash from machine_suffix. */
2766 if (strlen (machine_suffix) >= bufsize)
2767 bufsize = strlen (machine_suffix) * 2 + 1;
2768 buffer = (char *) xrealloc (buffer, bufsize);
2769 strcpy (buffer, machine_suffix);
2770 idx = strlen (buffer);
2771 if (buffer[idx - 1] == '/')
2772 buffer[idx - 1] = 0;
2773 do_spec_1 (buffer, 1, NULL_PTR);
2774 /* Make this a separate argument. */
2775 do_spec_1 (" ", 0, NULL_PTR);
2778 if (!pl->require_machine_suffix)
2780 if (is_linker_dir (pl->prefix, ""))
2782 do_spec_1 ("-L", 0, NULL_PTR);
2783 #ifdef SPACE_AFTER_L_OPTION
2784 do_spec_1 (" ", 0, NULL_PTR);
2786 /* Remove slash from pl->prefix. */
2787 if (strlen (pl->prefix) >= bufsize)
2788 bufsize = strlen (pl->prefix) * 2 + 1;
2789 buffer = (char *) xrealloc (buffer, bufsize);
2790 strcpy (buffer, pl->prefix);
2791 idx = strlen (buffer);
2792 if (buffer[idx - 1] == '/')
2793 buffer[idx - 1] = 0;
2794 do_spec_1 (buffer, 1, NULL_PTR);
2795 /* Make this a separate argument. */
2796 do_spec_1 (" ", 0, NULL_PTR);
2805 /* {...:%efoo} means report an error with `foo' as error message
2806 and don't execute any more commands for this file. */
2810 while (*p != 0 && *p != '\n') p++;
2811 buf = (char *) alloca (p - q + 1);
2812 strncpy (buf, q, p - q);
2822 if (save_temps_flag)
2823 obstack_grow (&obstack, input_basename, basename_length);
2826 #ifdef MKTEMP_EACH_FILE
2827 /* ??? This has a problem: the total number of
2828 values mktemp can return is limited.
2829 That matters for the names of object files.
2830 In 2.4, do something about that. */
2831 struct temp_name *t;
2833 while (*p == '.' || isalpha (*p))
2836 /* See if we already have an association of %g/%u/%U and
2838 for (t = temp_names; t; t = t->next)
2839 if (t->length == p - suffix
2840 && strncmp (t->suffix, suffix, p - suffix) == 0
2841 && t->unique == (c != 'g'))
2844 /* Make a new association if needed. %u requires one. */
2845 if (t == 0 || c == 'u')
2849 t = (struct temp_name *) xmalloc (sizeof (struct temp_name));
2850 t->next = temp_names;
2853 t->length = p - suffix;
2854 t->suffix = save_string (suffix, p - suffix);
2855 t->unique = (c != 'g');
2856 choose_temp_base ();
2857 t->filename = temp_filename;
2858 t->filename_length = temp_filename_length;
2861 obstack_grow (&obstack, t->filename, t->filename_length);
2862 delete_this_arg = 1;
2864 obstack_grow (&obstack, temp_filename, temp_filename_length);
2865 if (c == 'u' || c == 'U')
2871 sprintf (buff, "%d", unique);
2872 obstack_grow (&obstack, buff, strlen (buff));
2875 delete_this_arg = 1;
2881 obstack_grow (&obstack, input_filename, input_filename_length);
2886 if (gcc_exec_prefix)
2888 do_spec_1 ("-iprefix", 1, NULL_PTR);
2889 /* Make this a separate argument. */
2890 do_spec_1 (" ", 0, NULL_PTR);
2891 do_spec_1 (gcc_exec_prefix, 1, NULL_PTR);
2892 do_spec_1 (" ", 0, NULL_PTR);
2899 for (f = 0; f < n_infiles; f++)
2900 store_arg (outfiles[f], 0, 0);
2905 this_is_library_file = 1;
2909 this_is_output_file = 1;
2914 int index = argbuf_index;
2915 /* Handle the {...} following the %W. */
2918 p = handle_braces (p + 1);
2921 /* If any args were output, mark the last one for deletion
2923 if (argbuf_index != index)
2924 record_temp_file (argbuf[argbuf_index - 1], 0, 1);
2928 /* %x{OPTION} records OPTION for %X to output. */
2934 /* Skip past the option value and make a copy. */
2939 string = save_string (p1 + 1, p - p1 - 2);
2941 /* See if we already recorded this option. */
2942 for (i = 0; i < n_linker_options; i++)
2943 if (! strcmp (string, linker_options[i]))
2949 /* This option is new; add it. */
2951 if (!linker_options)
2953 = (char **) xmalloc (n_linker_options * sizeof (char **));
2956 = (char **) xrealloc (linker_options,
2957 n_linker_options * sizeof (char **));
2959 linker_options[n_linker_options - 1] = string;
2963 /* Dump out the options accumulated previously using %x,
2964 -Xlinker and -Wl,. */
2966 for (i = 0; i < n_linker_options; i++)
2968 do_spec_1 (linker_options[i], 1, NULL_PTR);
2969 /* Make each accumulated option a separate argument. */
2970 do_spec_1 (" ", 0, NULL_PTR);
2974 /* Dump out the options accumulated previously using -Wa,. */
2976 for (i = 0; i < n_assembler_options; i++)
2978 do_spec_1 (assembler_options[i], 1, NULL_PTR);
2979 /* Make each accumulated option a separate argument. */
2980 do_spec_1 (" ", 0, NULL_PTR);
2984 /* Here are digits and numbers that just process
2985 a certain constant string as a spec.
2986 /* Here are digits and numbers that just process
2987 a certain constant string as a spec. */
2990 value = do_spec_1 (cc1_spec, 0, NULL_PTR);
2996 value = do_spec_1 (cc1plus_spec, 0, NULL_PTR);
3002 value = do_spec_1 (asm_spec, 0, NULL_PTR);
3008 value = do_spec_1 (asm_final_spec, 0, NULL_PTR);
3014 value = do_spec_1 (signed_char_spec, 0, NULL_PTR);
3020 value = do_spec_1 (cpp_spec, 0, NULL_PTR);
3026 value = do_spec_1 (endfile_spec, 0, NULL_PTR);
3032 value = do_spec_1 (link_spec, 0, NULL_PTR);
3038 value = do_spec_1 (lib_spec, 0, NULL_PTR);
3045 char *x = (char *) alloca (strlen (cpp_predefines) + 1);
3049 /* Copy all of the -D options in CPP_PREDEFINES into BUF. */
3053 if (! strncmp (y, "-D", 2))
3054 /* Copy the whole option. */
3055 while (*y && *y != ' ' && *y != '\t')
3057 else if (*y == ' ' || *y == '\t')
3058 /* Copy whitespace to the result. */
3060 /* Don't copy other options. */
3067 value = do_spec_1 (buf, 0, NULL_PTR);
3075 char *x = (char *) alloca (strlen (cpp_predefines) * 4 + 1);
3079 /* Copy all of CPP_PREDEFINES into BUF,
3080 but put __ after every -D and at the end of each arg. */
3084 if (! strncmp (y, "-D", 2))
3091 if (strncmp (y, "__", 2))
3093 /* Stick __ at front of macro name. */
3096 /* Arrange to stick __ at the end as well. */
3100 /* Copy the macro name. */
3101 while (*y && *y != '=' && *y != ' ' && *y != '\t')
3110 /* Copy the value given, if any. */
3111 while (*y && *y != ' ' && *y != '\t')
3114 else if (*y == ' ' || *y == '\t')
3115 /* Copy whitespace to the result. */
3117 /* Don't copy -A options */
3123 /* Copy all of CPP_PREDEFINES into BUF,
3124 but put __ after every -D. */
3128 if (! strncmp (y, "-D", 2))
3133 if (strncmp (y, "__", 2))
3135 /* Stick __ at front of macro name. */
3140 /* Copy the macro name. */
3141 while (*y && *y != '=' && *y != ' ' && *y != '\t')
3144 /* Copy the value given, if any. */
3145 while (*y && *y != ' ' && *y != '\t')
3148 else if (*y == ' ' || *y == '\t')
3149 /* Copy whitespace to the result. */
3151 /* Don't copy -A options */
3157 /* Copy all of the -A options in CPP_PREDEFINES into BUF. */
3161 if (! strncmp (y, "-A", 2))
3162 /* Copy the whole option. */
3163 while (*y && *y != ' ' && *y != '\t')
3165 else if (*y == ' ' || *y == '\t')
3166 /* Copy whitespace to the result. */
3168 /* Don't copy other options. */
3175 value = do_spec_1 (buf, 0, NULL_PTR);
3182 value = do_spec_1 (startfile_spec, 0, NULL_PTR);
3187 /* Here we define characters other than letters and digits. */
3190 p = handle_braces (p);
3196 obstack_1grow (&obstack, '%');
3200 do_spec_1 (soft_matched_part, 1, NULL_PTR);
3201 do_spec_1 (" ", 0, NULL_PTR);
3204 /* Process a string found as the value of a spec given by name.
3205 This feature allows individual machine descriptions
3206 to add and use their own specs.
3207 %[...] modifies -D options the way %P does;
3208 %(...) uses the spec unmodified. */
3213 struct spec_list *sl;
3216 /* The string after the S/P is the name of a spec that is to be
3218 while (*p && *p != ')' && *p != ']')
3221 /* See if it's in the list */
3222 for (len = p - name, sl = specs; sl; sl = sl->next)
3223 if (strncmp (sl->name, name, len) == 0 && !sl->name[len])
3233 value = do_spec_1 (name, 0, NULL_PTR);
3239 char *x = (char *) alloca (strlen (name) * 2 + 1);
3243 /* Copy all of NAME into BUF, but put __ after
3244 every -D and at the end of each arg, */
3247 if (! strncmp (y, "-D", 2))
3255 else if (*y == ' ' || *y == 0)
3269 value = do_spec_1 (buf, 0, NULL_PTR);
3275 /* Discard the closing paren or bracket. */
3282 if (input_from_pipe)
3283 do_spec_1 ("-", 0, NULL_PTR);
3292 /* Backslash: treat next character as ordinary. */
3297 /* Ordinary character: put it into the current argument. */
3298 obstack_1grow (&obstack, c);
3302 return 0; /* End of string */
3305 /* Return 0 if we call do_spec_1 and that returns -1. */
3318 /* A `|' after the open-brace means,
3319 if the test fails, output a single minus sign rather than nothing.
3320 This is used in %{|!pipe:...}. */
3324 /* A `!' after the open-brace negates the condition:
3325 succeed if the specified switch is not present. */
3329 /* A `.' after the open-brace means test against the current suffix. */
3339 while (*p != ':' && *p != '}') p++;
3342 register int count = 1;
3360 int found = (input_suffix != 0
3361 && strlen (input_suffix) == p - filter
3362 && strncmp (input_suffix, filter, p - filter) == 0);
3368 && do_spec_1 (save_string (p + 1, q - p - 2), 0, NULL_PTR) < 0)
3373 else if (p[-1] == '*' && p[0] == '}')
3375 /* Substitute all matching switches as separate args. */
3378 for (i = 0; i < n_switches; i++)
3379 if (!strncmp (switches[i].part1, filter, p - filter))
3384 /* Test for presence of the specified switch. */
3388 /* If name specified ends in *, as in {x*:...},
3389 check for %* and handle that case. */
3390 if (p[-1] == '*' && !negate)
3395 /* First see whether we have %*. */
3399 if (*r == '%' && r[1] == '*')
3403 /* If we do, handle that case. */
3406 /* Substitute all matching switches as separate args.
3407 But do this by substituting for %*
3408 in the text that follows the colon. */
3410 unsigned hard_match_len = p - filter - 1;
3411 char *string = save_string (p + 1, q - p - 2);
3413 for (i = 0; i < n_switches; i++)
3414 if (!strncmp (switches[i].part1, filter, hard_match_len))
3416 do_spec_1 (string, 0, &switches[i].part1[hard_match_len]);
3417 /* Pass any arguments this switch has. */
3425 /* If name specified ends in *, as in {x*:...},
3426 check for presence of any switch name starting with x. */
3429 for (i = 0; i < n_switches; i++)
3431 unsigned hard_match_len = p - filter - 1;
3433 if (!strncmp (switches[i].part1, filter, hard_match_len))
3435 switches[i].valid = 1;
3440 /* Otherwise, check for presence of exact name specified. */
3443 for (i = 0; i < n_switches; i++)
3445 if (!strncmp (switches[i].part1, filter, p - filter)
3446 && switches[i].part1[p - filter] == 0)
3448 switches[i].valid = 1;
3455 /* If it is as desired (present for %{s...}, absent for %{-s...})
3456 then substitute either the switch or the specified
3457 conditional text. */
3458 if (present != negate)
3466 if (do_spec_1 (save_string (p + 1, q - p - 2), 0, NULL_PTR) < 0)
3472 /* Here if a %{|...} conditional fails: output a minus sign,
3473 which means "standard output" or "standard input". */
3474 do_spec_1 ("-", 0, NULL_PTR);
3481 /* Pass a switch to the current accumulating command
3482 in the same form that we received it.
3483 SWITCHNUM identifies the switch; it is an index into
3484 the vector of switches gcc received, which is `switches'.
3485 This cannot fail since it never finishes a command line.
3487 If OMIT_FIRST_WORD is nonzero, then we omit .part1 of the argument. */
3490 give_switch (switchnum, omit_first_word)
3492 int omit_first_word;
3494 if (!omit_first_word)
3496 do_spec_1 ("-", 0, NULL_PTR);
3497 do_spec_1 (switches[switchnum].part1, 1, NULL_PTR);
3499 do_spec_1 (" ", 0, NULL_PTR);
3500 if (switches[switchnum].args != 0)
3503 for (p = switches[switchnum].args; *p; p++)
3505 do_spec_1 (*p, 1, NULL_PTR);
3506 do_spec_1 (" ", 0, NULL_PTR);
3509 switches[switchnum].valid = 1;
3512 /* Search for a file named NAME trying various prefixes including the
3513 user's -B prefix and some standard ones.
3514 Return the absolute file name found. If nothing is found, return NAME. */
3522 newname = find_a_file (&startfile_prefix, name, R_OK);
3523 return newname ? newname : name;
3526 /* Determine whether a -L option is relevant. Not required for certain
3527 fixed names and for directories that don't exist. */
3530 is_linker_dir (path1, path2)
3534 int len1 = strlen (path1);
3535 int len2 = strlen (path2);
3536 char *path = (char *) alloca (3 + len1 + len2);
3540 /* Construct the path from the two parts. Ensure the string ends with "/.".
3541 The resulting path will be a directory even if the given path is a
3543 bcopy (path1, path, len1);
3544 bcopy (path2, path + len1, len2);
3545 cp = path + len1 + len2;
3551 /* Exclude directories that the linker is known to search. */
3552 if ((cp - path == 6 && strcmp (path, "/lib/.") == 0)
3553 || (cp - path == 10 && strcmp (path, "/usr/lib/.") == 0))
3556 return (stat (path, &st) >= 0 && S_ISDIR (st.st_mode));
3559 /* On fatal signals, delete all the temporary files. */
3562 fatal_error (signum)
3565 signal (signum, SIG_DFL);
3566 delete_failure_queue ();
3567 delete_temp_files ();
3568 /* Get the same signal again, this time not handled,
3569 so its normal effect occurs. */
3570 kill (getpid (), signum);
3581 int linker_was_run = 0;
3582 char *explicit_link_files;
3586 p = argv[0] + strlen (argv[0]);
3587 while (p != argv[0] && p[-1] != '/') --p;
3590 if (signal (SIGINT, SIG_IGN) != SIG_IGN)
3591 signal (SIGINT, fatal_error);
3592 if (signal (SIGHUP, SIG_IGN) != SIG_IGN)
3593 signal (SIGHUP, fatal_error);
3594 if (signal (SIGTERM, SIG_IGN) != SIG_IGN)
3595 signal (SIGTERM, fatal_error);
3597 if (signal (SIGPIPE, SIG_IGN) != SIG_IGN)
3598 signal (SIGPIPE, fatal_error);
3602 argbuf = (char **) xmalloc (argbuf_length * sizeof (char *));
3604 obstack_init (&obstack);
3606 /* Set up to remember the pathname of gcc and any options
3607 needed for collect. We use argv[0] instead of programname because
3608 we need the complete pathname. */
3609 obstack_init (&collect_obstack);
3610 obstack_grow (&collect_obstack, "COLLECT_GCC=", sizeof ("COLLECT_GCC=")-1);
3611 obstack_grow (&collect_obstack, argv[0], strlen (argv[0])+1);
3612 putenv (obstack_finish (&collect_obstack));
3614 /* Choose directory for temp files. */
3616 choose_temp_base ();
3618 /* Make a table of what switches there are (switches, n_switches).
3619 Make a table of specified input files (infiles, n_infiles).
3620 Decode switches that are handled locally. */
3622 process_command (argc, argv);
3624 /* Initialize the vector of specs to just the default.
3625 This means one element containing 0s, as a terminator. */
3627 compilers = (struct compiler *) xmalloc (sizeof default_compilers);
3628 bcopy (default_compilers, compilers, sizeof default_compilers);
3629 n_compilers = n_default_compilers;
3631 /* Read specs from a file if there is one. */
3633 machine_suffix = concat (spec_machine, "/", concat (spec_version, "/", ""));
3634 just_machine_suffix = concat (spec_machine, "/", "");
3636 specs_file = find_a_file (&startfile_prefix, "specs", R_OK);
3637 /* Read the specs file unless it is a default one. */
3638 if (specs_file != 0 && strcmp (specs_file, "specs"))
3639 read_specs (specs_file);
3641 /* If not cross-compiling, look for startfiles in the standard places. */
3642 /* The fact that these are done here, after reading the specs file,
3643 means that it cannot be found in these directories.
3644 But that's okay. It should never be there anyway. */
3647 #ifdef MD_EXEC_PREFIX
3648 add_prefix (&exec_prefix, md_exec_prefix, 0, 0, NULL_PTR);
3649 add_prefix (&startfile_prefix, md_exec_prefix, 0, 0, NULL_PTR);
3652 #ifdef MD_STARTFILE_PREFIX
3653 add_prefix (&startfile_prefix, md_startfile_prefix, 0, 0, NULL_PTR);
3656 #ifdef MD_STARTFILE_PREFIX_1
3657 add_prefix (&startfile_prefix, md_startfile_prefix_1, 0, 0, NULL_PTR);
3660 add_prefix (&startfile_prefix, standard_startfile_prefix, 0, 0,
3662 add_prefix (&startfile_prefix, standard_startfile_prefix_1, 0, 0,
3664 add_prefix (&startfile_prefix, standard_startfile_prefix_2, 0, 0,
3666 #if 0 /* Can cause surprises, and one can use -B./ instead. */
3667 add_prefix (&startfile_prefix, "./", 0, 1, NULL_PTR);
3671 /* Now we have the specs.
3672 Set the `valid' bits for switches that match anything in any spec. */
3674 validate_all_switches ();
3676 /* Warn about any switches that no pass was interested in. */
3678 for (i = 0; i < n_switches; i++)
3679 if (! switches[i].valid)
3680 error ("unrecognized option `-%s'", switches[i].part1);
3682 if (print_libgcc_file_name)
3684 printf ("%s\n", find_file ("libgcc.a"));
3688 /* Obey some of the options. */
3692 fprintf (stderr, "gcc version %s\n", version_string);
3698 fatal ("No input files specified.");
3700 /* Make a place to record the compiler output file names
3701 that correspond to the input files. */
3703 outfiles = (char **) xmalloc (n_infiles * sizeof (char *));
3704 bzero (outfiles, n_infiles * sizeof (char *));
3706 /* Record which files were specified explicitly as link input. */
3708 explicit_link_files = xmalloc (n_infiles);
3709 bzero (explicit_link_files, n_infiles);
3711 for (i = 0; i < n_infiles; i++)
3713 register struct compiler *cp = 0;
3714 int this_file_error = 0;
3716 /* Tell do_spec what to substitute for %i. */
3718 input_filename = infiles[i].name;
3719 input_filename_length = strlen (input_filename);
3720 input_file_number = i;
3722 /* Use the same thing in %o, unless cp->spec says otherwise. */
3724 outfiles[i] = input_filename;
3726 /* Figure out which compiler from the file's suffix. */
3728 cp = lookup_compiler (infiles[i].name, input_filename_length,
3729 infiles[i].language);
3733 /* Ok, we found an applicable compiler. Run its spec. */
3734 /* First say how much of input_filename to substitute for %b */
3738 input_basename = input_filename;
3739 for (p = input_filename; *p; p++)
3741 input_basename = p + 1;
3743 /* Find a suffix starting with the last period,
3744 and set basename_length to exclude that suffix. */
3745 basename_length = strlen (input_basename);
3746 p = input_basename + basename_length;
3747 while (p != input_basename && *p != '.') --p;
3748 if (*p == '.' && p != input_basename)
3750 basename_length = p - input_basename;
3751 input_suffix = p + 1;
3757 for (j = 0; j < sizeof cp->spec / sizeof cp->spec[0]; j++)
3759 len += strlen (cp->spec[j]);
3761 p = (char *) xmalloc (len + 1);
3764 for (j = 0; j < sizeof cp->spec / sizeof cp->spec[0]; j++)
3767 strcpy (p + len, cp->spec[j]);
3768 len += strlen (cp->spec[j]);
3771 value = do_spec (p);
3774 this_file_error = 1;
3777 /* If this file's name does not contain a recognized suffix,
3778 record it as explicit linker input. */
3781 explicit_link_files[i] = 1;
3783 /* Clear the delete-on-failure queue, deleting the files in it
3784 if this compilation failed. */
3786 if (this_file_error)
3788 delete_failure_queue ();
3791 /* If this compilation succeeded, don't delete those files later. */
3792 clear_failure_queue ();
3795 /* Run ld to link all the compiler output files. */
3797 if (error_count == 0)
3799 int tmp = execution_count;
3803 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
3805 putenv_from_prefixes (&exec_prefix, "COMPILER_PATH=");
3806 putenv_from_prefixes (&startfile_prefix, "LIBRARY_PATH=");
3808 /* Build COLLECT_GCC_OPTIONS to have all of the options specified to
3810 obstack_grow (&collect_obstack, "COLLECT_GCC_OPTIONS=",
3811 sizeof ("COLLECT_GCC_OPTIONS=")-1);
3814 for (i = 0; i < n_switches; i++)
3818 obstack_grow (&collect_obstack, " ", 1);
3821 obstack_grow (&collect_obstack, "-", 1);
3822 obstack_grow (&collect_obstack, switches[i].part1,
3823 strlen (switches[i].part1));
3825 for (args = switches[i].args; args && *args; args++)
3827 obstack_grow (&collect_obstack, " ", 1);
3828 obstack_grow (&collect_obstack, *args, strlen (*args));
3831 obstack_grow (&collect_obstack, "\0", 1);
3832 putenv (obstack_finish (&collect_obstack));
3834 value = do_spec (link_command_spec);
3837 linker_was_run = (tmp != execution_count);
3840 /* Warn if a -B option was specified but the prefix was never used. */
3841 unused_prefix_warnings (&exec_prefix);
3842 unused_prefix_warnings (&startfile_prefix);
3844 /* If options said don't run linker,
3845 complain about input files to be given to the linker. */
3847 if (! linker_was_run && error_count == 0)
3848 for (i = 0; i < n_infiles; i++)
3849 if (explicit_link_files[i])
3850 error ("%s: linker input file unused since linking not done",
3853 /* Delete some or all of the temporary files we made. */
3856 delete_failure_queue ();
3857 delete_temp_files ();
3859 exit (error_count > 0 ? (signal_count ? 2 : 1) : 0);
3864 /* Find the proper compilation spec for the file name NAME,
3865 whose length is LENGTH. LANGUAGE is the specified language,
3866 or 0 if none specified. */
3868 static struct compiler *
3869 lookup_compiler (name, length, language)
3874 struct compiler *cp;
3876 /* Look for the language, if one is spec'd. */
3879 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
3883 if (cp->suffix[0] == '@'
3884 && !strcmp (cp->suffix + 1, language))
3888 error ("language %s not recognized", language);
3891 /* Look for a suffix. */
3892 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
3894 if (/* The suffix `-' matches only the file name `-'. */
3895 (!strcmp (cp->suffix, "-") && !strcmp (name, "-"))
3897 (strlen (cp->suffix) < length
3898 /* See if the suffix matches the end of NAME. */
3899 && !strcmp (cp->suffix,
3900 name + length - strlen (cp->suffix))))
3902 if (cp->spec[0][0] == '@')
3904 struct compiler *new;
3905 /* An alias entry maps a suffix to a language.
3906 Search for the language; pass 0 for NAME and LENGTH
3907 to avoid infinite recursion if language not found.
3908 Construct the new compiler spec. */
3909 language = cp->spec[0] + 1;
3910 new = (struct compiler *) xmalloc (sizeof (struct compiler));
3911 new->suffix = cp->suffix;
3912 bcopy (lookup_compiler (NULL_PTR, 0, language)->spec,
3913 new->spec, sizeof new->spec);
3916 /* A non-alias entry: return it. */
3928 register char *value = (char *) malloc (size);
3930 fatal ("virtual memory exhausted");
3935 xrealloc (ptr, size)
3939 register char *value = (char *) realloc (ptr, size);
3941 fatal ("virtual memory exhausted");
3945 /* Return a newly-allocated string whose contents concatenate those of s1, s2, s3. */
3951 int len1 = strlen (s1), len2 = strlen (s2), len3 = strlen (s3);
3952 char *result = xmalloc (len1 + len2 + len3 + 1);
3954 strcpy (result, s1);
3955 strcpy (result + len1, s2);
3956 strcpy (result + len1 + len2, s3);
3957 *(result + len1 + len2 + len3) = 0;
3963 save_string (s, len)
3967 register char *result = xmalloc (len + 1);
3969 bcopy (s, result, len);
3975 pfatal_with_name (name)
3980 if (errno < sys_nerr)
3981 s = concat ("%s: ", sys_errlist[errno], "");
3983 s = "cannot open %s";
3988 perror_with_name (name)
3993 if (errno < sys_nerr)
3994 s = concat ("%s: ", sys_errlist[errno], "");
3996 s = "cannot open %s";
4006 if (errno < sys_nerr)
4007 s = concat ("installation problem, cannot exec %s: ",
4008 sys_errlist[errno], "");
4010 s = "installation problem, cannot exec %s";
4014 /* More 'friendly' abort that prints the line and file.
4015 config.h can #define abort fancy_abort if you like that sort of thing. */
4020 fatal ("Internal gcc abort.");
4025 /* Output an error message and exit */
4035 format = va_arg (ap, char *);
4036 fprintf (stderr, "%s: ", programname);
4037 vfprintf (stderr, format, ap);
4039 fprintf (stderr, "\n");
4040 delete_temp_files ();
4052 format = va_arg (ap, char *);
4053 fprintf (stderr, "%s: ", programname);
4054 vfprintf (stderr, format, ap);
4057 fprintf (stderr, "\n");
4060 #else /* not HAVE_VPRINTF */
4063 fatal (msg, arg1, arg2)
4064 char *msg, *arg1, *arg2;
4066 error (msg, arg1, arg2);
4067 delete_temp_files ();
4072 error (msg, arg1, arg2)
4073 char *msg, *arg1, *arg2;
4075 fprintf (stderr, "%s: ", programname);
4076 fprintf (stderr, msg, arg1, arg2);
4077 fprintf (stderr, "\n");
4080 #endif /* not HAVE_VPRINTF */
4084 validate_all_switches ()
4086 struct compiler *comp;
4089 struct spec_list *spec;
4091 for (comp = compilers; comp->spec[0]; comp++)
4094 for (i = 0; i < sizeof comp->spec / sizeof comp->spec[0] && comp->spec[i]; i++)
4098 if (c == '%' && *p == '{')
4099 /* We have a switch spec. */
4100 validate_switches (p + 1);
4104 /* look through the linked list of extra specs read from the specs file */
4105 for (spec = specs; spec ; spec = spec->next)
4109 if (c == '%' && *p == '{')
4110 /* We have a switch spec. */
4111 validate_switches (p + 1);
4114 p = link_command_spec;
4116 if (c == '%' && *p == '{')
4117 /* We have a switch spec. */
4118 validate_switches (p + 1);
4120 /* Now notice switches mentioned in the machine-specific specs. */
4124 if (c == '%' && *p == '{')
4125 /* We have a switch spec. */
4126 validate_switches (p + 1);
4130 if (c == '%' && *p == '{')
4131 /* We have a switch spec. */
4132 validate_switches (p + 1);
4136 if (c == '%' && *p == '{')
4137 /* We have a switch spec. */
4138 validate_switches (p + 1);
4140 p = signed_char_spec;
4142 if (c == '%' && *p == '{')
4143 /* We have a switch spec. */
4144 validate_switches (p + 1);
4148 if (c == '%' && *p == '{')
4149 /* We have a switch spec. */
4150 validate_switches (p + 1);
4154 if (c == '%' && *p == '{')
4155 /* We have a switch spec. */
4156 validate_switches (p + 1);
4160 if (c == '%' && *p == '{')
4161 /* We have a switch spec. */
4162 validate_switches (p + 1);
4166 if (c == '%' && *p == '{')
4167 /* We have a switch spec. */
4168 validate_switches (p + 1);
4172 if (c == '%' && *p == '{')
4173 /* We have a switch spec. */
4174 validate_switches (p + 1);
4177 /* Look at the switch-name that comes after START
4178 and mark as valid all supplied switches that match it. */
4181 validate_switches (start)
4184 register char *p = start;
4199 while (*p != ':' && *p != '}') p++;
4203 else if (p[-1] == '*')
4205 /* Mark all matching switches as valid. */
4207 for (i = 0; i < n_switches; i++)
4208 if (!strncmp (switches[i].part1, filter, p - filter))
4209 switches[i].valid = 1;
4213 /* Mark an exact matching switch as valid. */
4214 for (i = 0; i < n_switches; i++)
4216 if (!strncmp (switches[i].part1, filter, p - filter)
4217 && switches[i].part1[p - filter] == 0)
4218 switches[i].valid = 1;