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_directory ();
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 startfile_prefix.
249 %l process LINK_SPEC as a spec.
250 %L process LIB_SPEC as a spec.
251 %S process STARTFILE_SPEC as a spec. A capital S is actually used here.
252 %E process ENDFILE_SPEC as a spec. A capital E is actually used here.
253 %c process SIGNED_CHAR_SPEC as a spec.
254 %C process CPP_SPEC as a spec. A capital C is actually used here.
255 %1 process CC1_SPEC as a spec.
256 %2 process CC1PLUS_SPEC as a spec.
257 %| output "-" if the input for the current command is coming from a pipe.
258 %* substitute the variable part of a matched option. (See below.)
259 Note that each comma in the substituted string is replaced by
261 %{S} substitutes the -S switch, if that switch was given to CC.
262 If that switch was not specified, this substitutes nothing.
263 Here S is a metasyntactic variable.
264 %{S*} substitutes all the switches specified to CC whose names start
265 with -S. This is used for -o, -D, -I, etc; switches that take
266 arguments. CC considers `-o foo' as being one switch whose
267 name starts with `o'. %{o*} would substitute this text,
268 including the space; thus, two arguments would be generated.
269 %{S*:X} substitutes X if one or more switches whose names start with -S are
270 specified to CC. Note that the tail part of the -S option
271 (i.e. the part matched by the `*') will be substituted for each
272 occurrence of %* within X.
273 %{S:X} substitutes X, but only if the -S switch was given to CC.
274 %{!S:X} substitutes X, but only if the -S switch was NOT given to CC.
275 %{|S:X} like %{S:X}, but if no S switch, substitute `-'.
276 %{|!S:X} like %{!S:X}, but if there is an S switch, substitute `-'.
277 %{.S:X} substitutes X, but only if processing a file with suffix S.
278 %{!.S:X} substitutes X, but only if NOT processing a file with suffix S.
279 %(Spec) processes a specification defined in a specs file as *Spec:
280 %[Spec] as above, but put __ around -D arguments
282 The conditional text X in a %{S:X} or %{!S:X} construct may contain
283 other nested % constructs or spaces, or even newlines. They are
284 processed as usual, as described above.
286 The character | is used to indicate that a command should be piped to
287 the following command, but only if -pipe is specified.
289 Note that it is built into CC which switches take arguments and which
290 do not. You might think it would be useful to generalize this to
291 allow each compiler's spec to say which switches take arguments. But
292 this cannot be done in a consistent fashion. CC cannot even decide
293 which input files have been specified without knowing which switches
294 take arguments, and it must know which input files to compile in order
295 to tell which compilers to run.
297 CC also knows implicitly that arguments starting in `-l' are to be
298 treated as compiler output files, and passed to the linker in their
299 proper position among the other output files. */
301 /* Define the macros used for specs %a, %l, %L, %S, %c, %C, %1. */
303 /* config.h can define ASM_SPEC to provide extra args to the assembler
304 or extra switch-translations. */
309 /* config.h can define ASM_FINAL_SPEC to run a post processor after
310 the assembler has run. */
311 #ifndef ASM_FINAL_SPEC
312 #define ASM_FINAL_SPEC ""
315 /* config.h can define CPP_SPEC to provide extra args to the C preprocessor
316 or extra switch-translations. */
321 /* config.h can define CC1_SPEC to provide extra args to cc1 and cc1plus
322 or extra switch-translations. */
327 /* config.h can define CC1PLUS_SPEC to provide extra args to cc1plus
328 or extra switch-translations. */
330 #define CC1PLUS_SPEC ""
333 /* config.h can define LINK_SPEC to provide extra args to the linker
334 or extra switch-translations. */
339 /* config.h can define LIB_SPEC to override the default libraries. */
341 #define LIB_SPEC "%{g*:-lg} %{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p}"
344 /* config.h can define STARTFILE_SPEC to override the default crt0 files. */
345 #ifndef STARTFILE_SPEC
346 #define STARTFILE_SPEC \
347 "%{pg:gcrt0.o%s}%{!pg:%{p:mcrt0.o%s}%{!p:crt0.o%s}}"
350 /* config.h can define SWITCHES_NEED_SPACES to control passing -o and -L.
351 Make the string nonempty to require spaces there. */
352 #ifndef SWITCHES_NEED_SPACES
353 #define SWITCHES_NEED_SPACES ""
356 /* config.h can define ENDFILE_SPEC to override the default crtn files. */
358 #define ENDFILE_SPEC ""
361 /* This spec is used for telling cpp whether char is signed or not. */
362 #ifndef SIGNED_CHAR_SPEC
363 /* Use #if rather than ?:
364 because MIPS C compiler rejects like ?: in initializers. */
365 #if DEFAULT_SIGNED_CHAR
366 #define SIGNED_CHAR_SPEC "%{funsigned-char:-D__CHAR_UNSIGNED__}"
368 #define SIGNED_CHAR_SPEC "%{!fsigned-char:-D__CHAR_UNSIGNED__}"
372 static char *cpp_spec = CPP_SPEC;
373 static char *cpp_predefines = CPP_PREDEFINES;
374 static char *cc1_spec = CC1_SPEC;
375 static char *cc1plus_spec = CC1PLUS_SPEC;
376 static char *signed_char_spec = SIGNED_CHAR_SPEC;
377 static char *asm_spec = ASM_SPEC;
378 static char *asm_final_spec = ASM_FINAL_SPEC;
379 static char *link_spec = LINK_SPEC;
380 static char *lib_spec = LIB_SPEC;
381 static char *endfile_spec = ENDFILE_SPEC;
382 static char *startfile_spec = STARTFILE_SPEC;
383 static char *switches_need_spaces = SWITCHES_NEED_SPACES;
385 /* This defines which switch letters take arguments. */
387 #ifndef SWITCH_TAKES_ARG
388 #define SWITCH_TAKES_ARG(CHAR) \
389 ((CHAR) == 'D' || (CHAR) == 'U' || (CHAR) == 'o' \
390 || (CHAR) == 'e' || (CHAR) == 'T' || (CHAR) == 'u' \
391 || (CHAR) == 'I' || (CHAR) == 'm' \
392 || (CHAR) == 'L' || (CHAR) == 'A')
395 /* This defines which multi-letter switches take arguments. */
397 #define DEFAULT_WORD_SWITCH_TAKES_ARG(STR) \
398 (!strcmp (STR, "Tdata") || !strcmp (STR, "Ttext") \
399 || !strcmp (STR, "Tbss") || !strcmp (STR, "include") \
400 || !strcmp (STR, "imacros") || !strcmp (STR, "aux-info") \
401 || !strcmp (STR, "idirafter") || !strcmp (STR, "iprefix") \
402 || !strcmp (STR, "iwithprefix") || !strcmp (STR, "iwithprefixbefore"))
404 #ifndef WORD_SWITCH_TAKES_ARG
405 #define WORD_SWITCH_TAKES_ARG(STR) DEFAULT_WORD_SWITCH_TAKES_ARG (STR)
408 /* Record the mapping from file suffixes for compilation specs. */
412 char *suffix; /* Use this compiler for input files
413 whose names end in this suffix. */
415 char *spec[4]; /* To use this compiler, concatenate these
416 specs and pass to do_spec. */
419 /* Pointer to a vector of `struct compiler' that gives the spec for
420 compiling a file, based on its suffix.
421 A file that does not end in any of these suffixes will be passed
422 unchanged to the loader and nothing else will be done to it.
424 An entry containing two 0s is used to terminate the vector.
426 If multiple entries match a file, the last matching one is used. */
428 static struct compiler *compilers;
430 /* Number of entries in `compilers', not counting the null terminator. */
432 static int n_compilers;
434 /* The default list of file name suffixes and their compilation specs. */
436 static struct compiler default_compilers[] =
440 "cpp -lang-c %{nostdinc*} %{C} %{v} %{A*} %{I*} %{P} %I\
441 %{C:%{!E:%eGNU C does not support -C without using -E}}\
442 %{M} %{MM} %{MD:-MD %b.d} %{MMD:-MMD %b.d}\
443 -undef -D__GNUC__=2 %{ansi:-trigraphs -$ -D__STRICT_ANSI__}\
444 %{!undef:%{!ansi:%p} %P} %{trigraphs} \
445 %c %{O*:%{!O0:-D__OPTIMIZE__}} %{traditional} %{ftraditional:-traditional}\
446 %{traditional-cpp:-traditional}\
447 %{g*} %{W*} %{w} %{pedantic*} %{H} %{d*} %C %{D*} %{U*} %{i*}\
448 %i %{!M:%{!MM:%{!E:%{!pipe:%g.i}}}}%{E:%W{o*}}%{M:%W{o*}}%{MM:%W{o*}} |\n",
449 "%{!M:%{!MM:%{!E:cc1 %{!pipe:%g.i} %1 \
450 %{!Q:-quiet} -dumpbase %b.c %{d*} %{m*} %{a}\
451 %{g*} %{O*} %{W*} %{w} %{pedantic*} %{ansi} \
452 %{traditional} %{v:-version} %{pg:-p} %{p} %{f*}\
454 %{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\
455 %{S:%W{o*}%{!o*:-o %b.s}}%{!S:-o %{|!pipe:%g.s}} |\n\
456 %{!S:as %{R} %{j} %{J} %{h} %{d2} %a %Y\
457 %{c:%W{o*}%{!o*:-o %w%b.o}}%{!c:-o %d%w%u.o}\
458 %{!pipe:%g.s} %A\n }}}}"},
460 "%{E:cpp -lang-c %{nostdinc*} %{C} %{v} %{A*} %{I*} %{P} %I\
461 %{C:%{!E:%eGNU C does not support -C without using -E}}\
462 %{M} %{MM} %{MD:-MD %b.d} %{MMD:-MMD %b.d}\
463 -undef -D__GNUC__=2 %{ansi:-trigraphs -$ -D__STRICT_ANSI__}\
464 %{!undef:%{!ansi:%p} %P} %{trigraphs}\
465 %c %{O*:%{!O0:-D__OPTIMIZE__}} %{traditional} %{ftraditional:-traditional}\
466 %{traditional-cpp:-traditional}\
467 %{g*} %{W*} %{w} %{pedantic*} %{H} %{d*} %C %{D*} %{U*} %{i*}\
469 %{!E:%e-E required when input is from standard input}"},
470 {".m", "@objective-c"},
472 "cpp -lang-objc %{nostdinc*} %{C} %{v} %{A*} %{I*} %{P} %I\
473 %{C:%{!E:%eGNU C does not support -C without using -E}}\
474 %{M} %{MM} %{MD:-MD %b.d} %{MMD:-MMD %b.d}\
475 -undef -D__OBJC__ -D__GNUC__=2 %{ansi:-trigraphs -$ -D__STRICT_ANSI__}\
476 %{!undef:%{!ansi:%p} %P} %{trigraphs}\
477 %c %{O*:%{!O0:-D__OPTIMIZE__}} %{traditional} %{ftraditional:-traditional}\
478 %{traditional-cpp:-traditional}\
479 %{g*} %{W*} %{w} %{pedantic*} %{H} %{d*} %C %{D*} %{U*} %{i*}\
480 %i %{!M:%{!MM:%{!E:%{!pipe:%g.i}}}}%{E:%W{o*}}%{M:%W{o*}}%{MM:%W{o*}} |\n",
481 "%{!M:%{!MM:%{!E:cc1obj %{!pipe:%g.i} %1 \
482 %{!Q:-quiet} -dumpbase %b.m %{d*} %{m*} %{a}\
483 %{g*} %{O*} %{W*} %{w} %{pedantic*} %{ansi} \
484 %{traditional} %{v:-version} %{pg:-p} %{p} %{f*} \
485 -lang-objc %{gen-decls} \
487 %{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\
488 %{S:%W{o*}%{!o*:-o %b.s}}%{!S:-o %{|!pipe:%g.s}} |\n\
489 %{!S:as %{R} %{j} %{J} %{h} %{d2} %a %Y\
490 %{c:%W{o*}%{!o*:-o %w%b.o}}%{!c:-o %d%w%u.o}\
491 %{!pipe:%g.s} %A\n }}}}"},
494 "%{!E:%eCompilation of header file requested} \
495 cpp %{nostdinc*} %{C} %{v} %{A*} %{I*} %{P} %I\
496 %{C:%{!E:%eGNU C does not support -C without using -E}}\
497 %{M} %{MM} %{MD:-MD %b.d} %{MMD:-MMD %b.d} \
498 -undef -D__GNUC__=2 %{ansi:-trigraphs -$ -D__STRICT_ANSI__}\
499 %{!undef:%{!ansi:%p} %P} %{trigraphs}\
500 %c %{O*:%{!O0:-D__OPTIMIZE__}} %{traditional} %{ftraditional:-traditional}\
501 %{traditional-cpp:-traditional}\
502 %{g*} %{W*} %{w} %{pedantic*} %{H} %{d*} %C %{D*} %{U*} %{i*}\
508 "cpp -lang-c++ %{nostdinc*} %{C} %{v} %{A*} %{I*} %{P} %I\
509 %{C:%{!E:%eGNU C++ does not support -C without using -E}}\
510 %{M} %{MM} %{MD:-MD %b.d} %{MMD:-MMD %b.d} \
511 -undef -D__GNUC__=2 -D__GNUG__=2 -D__cplusplus \
512 %{ansi:-trigraphs -$ -D__STRICT_ANSI__} %{!undef:%{!ansi:%p} %P}\
513 %c %{O*:%{!O0:-D__OPTIMIZE__}} %{traditional} %{ftraditional:-traditional}\
514 %{traditional-cpp:-traditional} %{trigraphs}\
515 %{g*} %{W*} %{w} %{pedantic*} %{H} %{d*} %C %{D*} %{U*} %{i*}\
516 %i %{!M:%{!MM:%{!E:%{!pipe:%g.i}}}}%{E:%W{o*}}%{M:%W{o*}}%{MM:%W{o*}} |\n",
517 "%{!M:%{!MM:%{!E:cc1plus %{!pipe:%g.i} %1 %2\
518 %{!Q:-quiet} -dumpbase %b.cc %{d*} %{m*} %{a}\
519 %{g*} %{O*} %{W*} %{w} %{pedantic*} %{ansi} %{traditional}\
520 %{v:-version} %{pg:-p} %{p} %{f*} %{+e*}\
522 %{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\
523 %{S:%W{o*}%{!o*:-o %b.s}}%{!S:-o %{|!pipe:%g.s}} |\n\
524 %{!S:as %{R} %{j} %{J} %{h} %{d2} %a %Y\
525 %{c:%W{o*}%{!o*:-o %w%b.o}}%{!c:-o %d%w%u.o}\
526 %{!pipe:%g.s} %A\n }}}}"},
527 {".i", "@cpp-output"},
529 "cc1 %i %1 %{!Q:-quiet} %{d*} %{m*} %{a}\
530 %{g*} %{O*} %{W*} %{w} %{pedantic*} %{ansi} %{traditional}\
531 %{v:-version} %{pg:-p} %{p} %{f*}\
533 %{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\
534 %{S:%W{o*}%{!o*:-o %b.s}}%{!S:-o %{|!pipe:%g.s}} |\n\
535 %{!S:as %{R} %{j} %{J} %{h} %{d2} %a %Y\
536 %{c:%W{o*}%{!o*:-o %w%b.o}}%{!c:-o %d%w%u.o} %{!pipe:%g.s} %A\n }"},
537 {".ii", "@c++-cpp-output"},
539 "cc1plus %i %1 %2 %{!Q:-quiet} %{d*} %{m*} %{a}\
540 %{g*} %{O*} %{W*} %{w} %{pedantic*} %{ansi} %{traditional}\
541 %{v:-version} %{pg:-p} %{p} %{f*} %{+e*}\
543 %{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\
544 %{S:%W{o*}%{!o*:-o %b.s}}%{!S:-o %{|!pipe:%g.s}} |\n\
545 %{!S:as %{R} %{j} %{J} %{h} %{d2} %a %Y\
546 %{c:%W{o*}%{!o*:-o %w%b.o}}%{!c:-o %d%w%u.o}\
547 %{!pipe:%g.s} %A\n }"},
548 {".s", "@assembler"},
550 "%{!S:as %{R} %{j} %{J} %{h} %{d2} %a %Y\
551 %{c:%W{o*}%{!o*:-o %w%b.o}}%{!c:-o %d%w%u.o} %i %A\n }"},
552 {".S", "@assembler-with-cpp"},
553 {"@assembler-with-cpp",
554 "cpp -lang-asm %{nostdinc*} %{C} %{v} %{A*} %{I*} %{P} %I\
555 %{C:%{!E:%eGNU C does not support -C without using -E}}\
556 %{M} %{MM} %{MD:-MD %b.d} %{MMD:-MMD %b.d} %{trigraphs} \
557 -undef -$ %{!undef:%p %P} -D__ASSEMBLER__ \
558 %c %{O*:%{!O0:-D__OPTIMIZE__}} %{traditional} %{ftraditional:-traditional}\
559 %{traditional-cpp:-traditional}\
560 %{g*} %{W*} %{w} %{pedantic*} %{H} %{d*} %C %{D*} %{U*} %{i*}\
561 %i %{!M:%{!MM:%{!E:%{!pipe:%g.s}}}}%{E:%W{o*}}%{M:%W{o*}}%{MM:%W{o*}} |\n",
562 "%{!M:%{!MM:%{!E:%{!S:as %{R} %{j} %{J} %{h} %{d2} %a %Y\
563 %{c:%W{o*}%{!o*:-o %w%b.o}}%{!c:-o %d%w%u.o}\
564 %{!pipe:%g.s} %A\n }}}}"},
565 /* Mark end of table */
569 /* Number of elements in default_compilers, not counting the terminator. */
571 static int n_default_compilers
572 = (sizeof default_compilers / sizeof (struct compiler)) - 1;
574 /* Here is the spec for running the linker, after compiling all files. */
576 /* -u* was put back because both BSD and SysV seem to support it. */
577 /* %{static:} simply prevents an error message if the target machine
578 doesn't handle -static. */
579 /* We want %{T*} after %{L*} and %D so that it can be used to specify linker
580 scripts which exist in user specified directories, or in standard
582 #ifdef LINK_LIBGCC_SPECIAL_1
583 /* Have gcc do the search for libgcc.a, but generate -L options as usual. */
584 static char *link_command_spec = "\
586 %{!c:%{!M:%{!MM:%{!E:%{!S:ld %l %X %{o*} %{A} %{d} %{e*} %{m} %{N} %{n} \
587 %{r} %{s} %{t} %{u*} %{x} %{z}\
588 %{!A:%{!nostartfiles:%{!nostdlib:%S}}} %{static:}\
589 %{L*} %D %{T*} %o %{!nostdlib:libgcc.a%s %L libgcc.a%s %{!A:%E}}\n }}}}}}";
591 #ifdef LINK_LIBGCC_SPECIAL
592 /* Have gcc do the search for libgcc.a, and don't generate -L options. */
593 static char *link_command_spec = "\
595 %{!c:%{!M:%{!MM:%{!E:%{!S:ld %l %X %{o*} %{A} %{d} %{e*} %{m} %{N} %{n} \
596 %{r} %{s} %{t} %{u*} %{x} %{z}\
597 %{!A:%{!nostartfiles:%{!nostdlib:%S}}} %{static:}\
598 %{L*} %{T*} %o %{!nostdlib:libgcc.a%s %L libgcc.a%s %{!A:%E}}\n }}}}}}";
600 /* Use -L and have the linker do the search for -lgcc. */
601 static char *link_command_spec = "\
603 %{!c:%{!M:%{!MM:%{!E:%{!S:ld %l %X %{o*} %{A} %{d} %{e*} %{m} %{N} %{n} \
604 %{r} %{s} %{t} %{u*} %{x} %{z}\
605 %{!A:%{!nostartfiles:%{!nostdlib:%S}}} %{static:}\
606 %{L*} %D %{T*} %o %{!nostdlib:-lgcc %L -lgcc %{!A:%E}}\n }}}}}}";
610 /* A vector of options to give to the linker.
611 These options are accumulated by -Xlinker and -Wl,
612 and substituted into the linker command with %X. */
613 static int n_linker_options;
614 static char **linker_options;
616 /* A vector of options to give to the assembler.
617 These options are accumulated by -Wa,
618 and substituted into the assembler command with %X. */
619 static int n_assembler_options;
620 static char **assembler_options;
622 /* Define how to map long options into short ones. */
624 /* This structure describes one mapping. */
627 /* The long option's name. */
629 /* The equivalent short option. */
631 /* Argument info. A string of flag chars; NULL equals no options.
632 a => argument required.
633 o => argument optional.
634 j => join argument to equivalent, making one word.
635 * => allow other text after NAME as an argument. */
639 /* This is the table of mappings. Mappings are tried sequentially
640 for each option encountered; the first one that matches, wins. */
642 struct option_map option_map[] =
644 {"--profile-blocks", "-a", 0},
645 {"--target", "-b", "a"},
646 {"--compile", "-c", 0},
647 {"--dump", "-d", "a"},
648 {"--entry", "-e", 0},
649 {"--debug", "-g", "oj"},
650 {"--include", "-include", "a"},
651 {"--imacros", "-imacros", "a"},
652 {"--include-prefix", "-iprefix", "a"},
653 {"--include-directory-after", "-idirafter", "a"},
654 {"--include-with-prefix", "-iwithprefix", "a"},
655 {"--include-with-prefix-before", "-iwithprefixbefore", "a"},
656 {"--include-with-prefix-after", "-iwithprefix", "a"},
657 {"--machine-", "-m", "*j"},
658 {"--machine", "-m", "aj"},
659 {"--no-standard-includes", "-nostdinc", 0},
660 {"--no-standard-libraries", "-nostdlib", 0},
661 {"--no-precompiled-includes", "-noprecomp", 0},
662 {"--output", "-o", "a"},
663 {"--profile", "-p", 0},
664 {"--quiet", "-q", 0},
665 {"--silent", "-q", 0},
666 {"--force-link", "-u", "a"},
667 {"--verbose", "-v", 0},
668 {"--version", "-dumpversion", 0},
669 {"--no-warnings", "-w", 0},
670 {"--language", "-x", "a"},
672 {"--assert", "-A", "a"},
673 {"--prefix", "-B", "a"},
674 {"--comments", "-C", 0},
675 {"--define-macro", "-D", "a"},
676 {"--preprocess", "-E", 0},
677 {"--trace-includes", "-H", 0},
678 {"--include-directory", "-I", "a"},
679 {"--include-barrier", "-I-", 0},
680 {"--library-directory", "-L", "a"},
681 {"--dependencies", "-M", 0},
682 {"--user-dependencies", "-MM", 0},
683 {"--write-dependencies", "-MD", 0},
684 {"--write-user-dependencies", "-MMD", 0},
685 {"--optimize", "-O", "oj"},
686 {"--no-line-commands", "-P", 0},
687 {"--assemble", "-S", 0},
688 {"--undefine-macro", "-U", "a"},
689 {"--use-version", "-V", "a"},
690 {"--for-assembler", "-Wa", "a"},
691 {"--extra-warnings", "-W", 0},
692 {"--all-warnings", "-Wall", 0},
693 {"--warn-", "-W", "*j"},
694 {"--for-linker", "-Xlinker", "a"},
696 {"--ansi", "-ansi", 0},
697 {"--traditional", "-traditional", 0},
698 {"--traditional-cpp", "-traditional-cpp", 0},
699 {"--trigraphs", "-trigraphs", 0},
700 {"--pipe", "-pipe", 0},
701 {"--dumpbase", "-dumpbase", "a"},
702 {"--pedantic", "-pedantic", 0},
703 {"--pedantic-errors", "-pedantic-errors", 0},
704 {"--save-temps", "-save-temps", 0},
705 {"--print-libgcc-file-name", "-print-libgcc-file-name", 0},
706 {"--static", "-static", 0},
707 {"--shared", "-shared", 0},
708 {"--symbolic", "-symbolic", 0},
712 /* Translate the options described by *ARGCP and *ARGVP.
713 Make a new vector and store it back in *ARGVP,
714 and store its length in *ARGVC. */
717 translate_options (argcp, argvp)
723 char **argv = *argvp;
724 char **newv = (char **) xmalloc ((argc + 2) * 2 * sizeof (char *));
728 newv[newindex++] = argv[i++];
732 /* Translate -- options. */
733 if (argv[i][0] == '-' && argv[i][1] == '-')
735 /* Find a mapping that applies to this option. */
736 for (j = 0; j < sizeof (option_map) / sizeof (option_map[0]); j++)
738 int optlen = strlen (option_map[j].name);
739 int complen = strlen (argv[i]);
740 char *arginfo = option_map[j].arg_info;
744 if (complen > optlen)
746 if (!strncmp (argv[i], option_map[j].name, complen))
748 int extra = strlen (argv[i]) > optlen;
753 /* If the option has an argument, accept that. */
754 if (argv[i][optlen] == '=')
755 arg = argv[i] + optlen + 1;
756 /* If this mapping allows extra text at end of name,
757 accept that as "argument". */
758 else if (index (arginfo, '*') != 0)
759 arg = argv[i] + optlen;
760 /* Otherwise, extra text at end means mismatch.
761 Try other mappings. */
765 else if (index (arginfo, '*') != 0)
766 error ("Incomplete `%s' option", option_map[j].name);
768 /* Handle arguments. */
769 if (index (arginfo, 'o') != 0)
774 error ("Missing argument to `%s' option",
779 else if (index (arginfo, '*') != 0)
781 else if (index (arginfo, 'a') == 0)
784 error ("Extraneous argument to `%s' option",
789 /* Store the translation as one argv elt or as two. */
790 if (arg != 0 && index (arginfo, 'j') != 0)
791 newv[newindex++] = concat (option_map[j].equivalent,
795 newv[newindex++] = option_map[j].equivalent;
796 newv[newindex++] = arg;
799 newv[newindex++] = option_map[j].equivalent;
806 /* Handle old-fashioned options--just copy them through,
807 with their arguments. */
808 else if (argv[i][0] == '-')
810 char *p = argv[i] + 1;
814 if (SWITCH_TAKES_ARG (c) > (p[1] != 0))
815 nskip += SWITCH_TAKES_ARG (c) - (p[1] != 0);
816 else if (WORD_SWITCH_TAKES_ARG (p))
817 nskip += WORD_SWITCH_TAKES_ARG (p);
821 newv[newindex++] = argv[i++];
826 /* Ordinary operands, or +e options. */
827 newv[newindex++] = argv[i++];
836 /* Read compilation specs from a file named FILENAME,
837 replacing the default ones.
839 A suffix which starts with `*' is a definition for
840 one of the machine-specific sub-specs. The "suffix" should be
841 *asm, *cc1, *cpp, *link, *startfile, *signed_char, etc.
842 The corresponding spec is stored in asm_spec, etc.,
843 rather than in the `compilers' vector.
845 Anything invalid in the file is a fatal error. */
848 read_specs (filename)
857 fprintf (stderr, "Reading specs from %s\n", filename);
859 /* Open and stat the file. */
860 desc = open (filename, 0, 0);
862 pfatal_with_name (filename);
863 if (stat (filename, &statbuf) < 0)
864 pfatal_with_name (filename);
866 /* Read contents of file into BUFFER. */
867 buffer = xmalloc ((unsigned) statbuf.st_size + 1);
868 read (desc, buffer, (unsigned) statbuf.st_size);
869 buffer[statbuf.st_size] = 0;
872 /* Scan BUFFER for specs, putting them in the vector. */
878 char *in, *out, *p1, *p2;
880 /* Advance P in BUFFER to the next nonblank nocomment line. */
881 p = skip_whitespace (p);
885 /* Find the colon that should end the suffix. */
887 while (*p1 && *p1 != ':' && *p1 != '\n') p1++;
888 /* The colon shouldn't be missing. */
890 fatal ("specs file malformed after %d characters", p1 - buffer);
891 /* Skip back over trailing whitespace. */
893 while (p2 > buffer && (p2[-1] == ' ' || p2[-1] == '\t')) p2--;
894 /* Copy the suffix to a string. */
895 suffix = save_string (p, p2 - p);
896 /* Find the next line. */
897 p = skip_whitespace (p1 + 1);
899 fatal ("specs file malformed after %d characters", p - buffer);
901 /* Find next blank line. */
902 while (*p1 && !(*p1 == '\n' && p1[1] == '\n')) p1++;
903 /* Specs end at the blank line and do not include the newline. */
904 spec = save_string (p, p1 - p);
907 /* Delete backslash-newline sequences from the spec. */
912 if (in[0] == '\\' && in[1] == '\n')
914 else if (in[0] == '#')
916 while (*in && *in != '\n') in++;
923 if (suffix[0] == '*')
925 if (! strcmp (suffix, "*link_command"))
926 link_command_spec = spec;
928 set_spec (suffix + 1, spec);
932 /* Add this pair to the vector. */
934 = ((struct compiler *)
935 xrealloc (compilers, (n_compilers + 2) * sizeof (struct compiler)));
936 compilers[n_compilers].suffix = suffix;
937 bzero (compilers[n_compilers].spec,
938 sizeof compilers[n_compilers].spec);
939 compilers[n_compilers].spec[0] = spec;
944 link_command_spec = spec;
947 if (link_command_spec == 0)
948 fatal ("spec file has no spec for linking");
957 /* A fully-blank line is a delimiter in the SPEC file and shouldn't
958 be considered whitespace. */
959 if (p[0] == '\n' && p[1] == '\n' && p[2] == '\n')
961 else if (*p == '\n' || *p == ' ' || *p == '\t')
965 while (*p != '\n') p++;
975 /* Structure to keep track of the specs that have been defined so far. These
976 are accessed using %(specname) or %[specname] in a compiler or link spec. */
980 char *name; /* Name of the spec. */
981 char *spec; /* The spec itself. */
982 struct spec_list *next; /* Next spec in linked list. */
985 /* List of specs that have been defined so far. */
987 static struct spec_list *specs = (struct spec_list *) 0;
989 /* Change the value of spec NAME to SPEC. If SPEC is empty, then the spec is
990 removed; If the spec starts with a + then SPEC is added to the end of the
994 set_spec (name, spec)
998 struct spec_list *sl;
1001 /* See if the spec already exists */
1002 for (sl = specs; sl; sl = sl->next)
1003 if (strcmp (sl->name, name) == 0)
1008 /* Not found - make it */
1009 sl = (struct spec_list *) xmalloc (sizeof (struct spec_list));
1010 sl->name = save_string (name, strlen (name));
1011 sl->spec = save_string ("", 0);
1016 old_spec = sl->spec;
1017 if (name && spec[0] == '+' && isspace (spec[1]))
1018 sl->spec = concat (old_spec, spec + 1, "");
1020 sl->spec = save_string (spec, strlen (spec));
1022 if (! strcmp (name, "asm"))
1023 asm_spec = sl->spec;
1024 else if (! strcmp (name, "asm_final"))
1025 asm_final_spec = sl->spec;
1026 else if (! strcmp (name, "cc1"))
1027 cc1_spec = sl->spec;
1028 else if (! strcmp (name, "cc1plus"))
1029 cc1plus_spec = sl->spec;
1030 else if (! strcmp (name, "cpp"))
1031 cpp_spec = sl->spec;
1032 else if (! strcmp (name, "endfile"))
1033 endfile_spec = sl->spec;
1034 else if (! strcmp (name, "lib"))
1035 lib_spec = sl->spec;
1036 else if (! strcmp (name, "link"))
1037 link_spec = sl->spec;
1038 else if (! strcmp (name, "predefines"))
1039 cpp_predefines = sl->spec;
1040 else if (! strcmp (name, "signed_char"))
1041 signed_char_spec = sl->spec;
1042 else if (! strcmp (name, "startfile"))
1043 startfile_spec = sl->spec;
1044 else if (! strcmp (name, "switches_need_spaces"))
1045 switches_need_spaces = sl->spec;
1046 else if (! strcmp (name, "cross_compile"))
1047 cross_compile = atoi (sl->spec);
1048 /* Free the old spec */
1053 /* Accumulate a command (program name and args), and run it. */
1055 /* Vector of pointers to arguments in the current line of specifications. */
1057 static char **argbuf;
1059 /* Number of elements allocated in argbuf. */
1061 static int argbuf_length;
1063 /* Number of elements in argbuf currently in use (containing args). */
1065 static int argbuf_index;
1067 /* This is the list of suffixes and codes (%g/%u/%U) and the associated
1068 temp file. Used only if MKTEMP_EACH_FILE. */
1070 static struct temp_name {
1071 char *suffix; /* suffix associated with the code. */
1072 int length; /* strlen (suffix). */
1073 int unique; /* Indicates whether %g or %u/%U was used. */
1074 char *filename; /* associated filename. */
1075 int filename_length; /* strlen (filename). */
1076 struct temp_name *next;
1079 /* Number of commands executed so far. */
1081 static int execution_count;
1083 /* Number of commands that exited with a signal. */
1085 static int signal_count;
1087 /* Name with which this program was invoked. */
1089 static char *programname;
1091 /* Structures to keep track of prefixes to try when looking for files. */
1095 char *prefix; /* String to prepend to the path. */
1096 struct prefix_list *next; /* Next in linked list. */
1097 int require_machine_suffix; /* Don't use without machine_suffix. */
1098 /* 2 means try both machine_suffix and just_machine_suffix. */
1099 int *used_flag_ptr; /* 1 if a file was found with this prefix. */
1104 struct prefix_list *plist; /* List of prefixes to try */
1105 int max_len; /* Max length of a prefix in PLIST */
1106 char *name; /* Name of this list (used in config stuff) */
1109 /* List of prefixes to try when looking for executables. */
1111 static struct path_prefix exec_prefix = { 0, 0, "exec" };
1113 /* List of prefixes to try when looking for startup (crt0) files. */
1115 static struct path_prefix startfile_prefix = { 0, 0, "startfile" };
1117 /* Suffix to attach to directories searched for commands.
1118 This looks like `MACHINE/VERSION/'. */
1120 static char *machine_suffix = 0;
1122 /* Suffix to attach to directories searched for commands.
1123 This is just `MACHINE/'. */
1125 static char *just_machine_suffix = 0;
1127 /* Adjusted value of GCC_EXEC_PREFIX envvar. */
1129 static char *gcc_exec_prefix;
1131 /* Default prefixes to attach to command names. */
1133 #ifdef CROSS_COMPILE /* Don't use these prefixes for a cross compiler. */
1134 #undef MD_EXEC_PREFIX
1135 #undef MD_STARTFILE_PREFIX
1136 #undef MD_STARTFILE_PREFIX_1
1139 #ifndef STANDARD_EXEC_PREFIX
1140 #define STANDARD_EXEC_PREFIX "/usr/local/lib/gcc-lib/"
1141 #endif /* !defined STANDARD_EXEC_PREFIX */
1143 static char *standard_exec_prefix = STANDARD_EXEC_PREFIX;
1144 static char *standard_exec_prefix_1 = "/usr/lib/gcc/";
1145 #ifdef MD_EXEC_PREFIX
1146 static char *md_exec_prefix = MD_EXEC_PREFIX;
1149 #ifndef STANDARD_STARTFILE_PREFIX
1150 #define STANDARD_STARTFILE_PREFIX "/usr/local/lib/"
1151 #endif /* !defined STANDARD_STARTFILE_PREFIX */
1153 #ifdef MD_STARTFILE_PREFIX
1154 static char *md_startfile_prefix = MD_STARTFILE_PREFIX;
1156 #ifdef MD_STARTFILE_PREFIX_1
1157 static char *md_startfile_prefix_1 = MD_STARTFILE_PREFIX_1;
1159 static char *standard_startfile_prefix = STANDARD_STARTFILE_PREFIX;
1160 static char *standard_startfile_prefix_1 = "/lib/";
1161 static char *standard_startfile_prefix_2 = "/usr/lib/";
1163 #ifndef TOOLDIR_BASE_PREFIX
1164 #define TOOLDIR_BASE_PREFIX "/usr/local/"
1166 static char *tooldir_base_prefix = TOOLDIR_BASE_PREFIX;
1167 static char *tooldir_prefix;
1169 /* Clear out the vector of arguments (after a command is executed). */
1177 /* Add one argument to the vector at the end.
1178 This is done when a space is seen or at the end of the line.
1179 If DELETE_ALWAYS is nonzero, the arg is a filename
1180 and the file should be deleted eventually.
1181 If DELETE_FAILURE is nonzero, the arg is a filename
1182 and the file should be deleted if this compilation fails. */
1185 store_arg (arg, delete_always, delete_failure)
1187 int delete_always, delete_failure;
1189 if (argbuf_index + 1 == argbuf_length)
1191 argbuf = (char **) xrealloc (argbuf, (argbuf_length *= 2) * sizeof (char *));
1194 argbuf[argbuf_index++] = arg;
1195 argbuf[argbuf_index] = 0;
1197 if (delete_always || delete_failure)
1198 record_temp_file (arg, delete_always, delete_failure);
1201 /* Record the names of temporary files we tell compilers to write,
1202 and delete them at the end of the run. */
1204 /* This is the common prefix we use to make temp file names.
1205 It is chosen once for each run of this program.
1206 It is substituted into a spec by %g.
1207 Thus, all temp file names contain this prefix.
1208 In practice, all temp file names start with this prefix.
1210 This prefix comes from the envvar TMPDIR if it is defined;
1211 otherwise, from the P_tmpdir macro if that is defined;
1212 otherwise, in /usr/tmp or /tmp. */
1214 static char *temp_filename;
1216 /* Length of the prefix. */
1218 static int temp_filename_length;
1220 /* Define the list of temporary files to delete. */
1225 struct temp_file *next;
1228 /* Queue of files to delete on success or failure of compilation. */
1229 static struct temp_file *always_delete_queue;
1230 /* Queue of files to delete on failure of compilation. */
1231 static struct temp_file *failure_delete_queue;
1233 /* Record FILENAME as a file to be deleted automatically.
1234 ALWAYS_DELETE nonzero means delete it if all compilation succeeds;
1235 otherwise delete it in any case.
1236 FAIL_DELETE nonzero means delete it if a compilation step fails;
1237 otherwise delete it in any case. */
1240 record_temp_file (filename, always_delete, fail_delete)
1245 register char *name;
1246 name = xmalloc (strlen (filename) + 1);
1247 strcpy (name, filename);
1251 register struct temp_file *temp;
1252 for (temp = always_delete_queue; temp; temp = temp->next)
1253 if (! strcmp (name, temp->name))
1255 temp = (struct temp_file *) xmalloc (sizeof (struct temp_file));
1256 temp->next = always_delete_queue;
1258 always_delete_queue = temp;
1264 register struct temp_file *temp;
1265 for (temp = failure_delete_queue; temp; temp = temp->next)
1266 if (! strcmp (name, temp->name))
1268 temp = (struct temp_file *) xmalloc (sizeof (struct temp_file));
1269 temp->next = failure_delete_queue;
1271 failure_delete_queue = temp;
1276 /* Delete all the temporary files whose names we previously recorded. */
1279 delete_temp_files ()
1281 register struct temp_file *temp;
1283 for (temp = always_delete_queue; temp; temp = temp->next)
1287 printf ("Delete %s? (y or n) ", temp->name);
1291 while (getchar () != '\n') ;
1292 if (i == 'y' || i == 'Y')
1296 if (stat (temp->name, &st) >= 0)
1298 /* Delete only ordinary files. */
1299 if (S_ISREG (st.st_mode))
1300 if (unlink (temp->name) < 0)
1302 perror_with_name (temp->name);
1307 always_delete_queue = 0;
1310 /* Delete all the files to be deleted on error. */
1313 delete_failure_queue ()
1315 register struct temp_file *temp;
1317 for (temp = failure_delete_queue; temp; temp = temp->next)
1321 printf ("Delete %s? (y or n) ", temp->name);
1325 while (getchar () != '\n') ;
1326 if (i == 'y' || i == 'Y')
1329 if (unlink (temp->name) < 0)
1331 perror_with_name (temp->name);
1337 clear_failure_queue ()
1339 failure_delete_queue = 0;
1342 /* Compute a string to use as the base of all temporary file names.
1343 It is substituted for %g. */
1346 choose_temp_base_try (try, base)
1353 else if (try == (char *)0)
1355 else if (access (try, R_OK | W_OK) != 0)
1368 base = choose_temp_base_try (getenv ("TMPDIR"), base);
1369 base = choose_temp_base_try (getenv ("TMP"), base);
1370 base = choose_temp_base_try (getenv ("TEMP"), base);
1373 base = choose_temp_base_try (P_tmpdir, base);
1376 base = choose_temp_base_try ("/usr/tmp", base);
1377 base = choose_temp_base_try ("/tmp", base);
1379 /* If all else fails, use the current directory! */
1380 if (base == (char *)0)
1383 len = strlen (base);
1384 temp_filename = xmalloc (len + sizeof("/ccXXXXXX"));
1385 strcpy (temp_filename, base);
1386 if (len > 0 && temp_filename[len-1] != '/')
1387 temp_filename[len++] = '/';
1388 strcpy (temp_filename + len, "ccXXXXXX");
1390 mktemp (temp_filename);
1391 temp_filename_length = strlen (temp_filename);
1392 if (temp_filename_length == 0)
1397 /* Routine to add variables to the environment. We do this to pass
1398 the pathname of the gcc driver, and the directories search to the
1399 collect2 program, which is being run as ld. This way, we can be
1400 sure of executing the right compiler when collect2 wants to build
1401 constructors and destructors. Since the environment variables we
1402 use come from an obstack, we don't have to worry about allocating
1411 #ifndef VMS /* nor about VMS */
1413 extern char **environ;
1414 char **old_environ = environ;
1418 int str_len = strlen (str);
1422 while ((ch = *p++) != '\0' && ch != '=')
1428 /* Search for replacing an existing environment variable, and
1429 count the number of total environment variables. */
1430 for (envp = old_environ; *envp; envp++)
1433 if (!strncmp (str, *envp, name_len))
1440 /* Add a new environment variable */
1441 environ = (char **) xmalloc (sizeof (char *) * (num_envs+2));
1443 bcopy (old_environ, environ+1, sizeof (char *) * (num_envs+1));
1448 #endif /* HAVE_PUTENV */
1451 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables for collect. */
1454 putenv_from_prefixes (paths, env_var)
1455 struct path_prefix *paths;
1458 int suffix_len = (machine_suffix) ? strlen (machine_suffix) : 0;
1460 = (just_machine_suffix) ? strlen (just_machine_suffix) : 0;
1461 int first_time = TRUE;
1462 struct prefix_list *pprefix;
1464 obstack_grow (&collect_obstack, env_var, strlen (env_var));
1466 for (pprefix = paths->plist; pprefix != 0; pprefix = pprefix->next)
1468 int len = strlen (pprefix->prefix);
1471 && is_directory (pprefix->prefix, machine_suffix, 0))
1474 obstack_1grow (&collect_obstack, PATH_SEPARATOR);
1477 obstack_grow (&collect_obstack, pprefix->prefix, len);
1478 obstack_grow (&collect_obstack, machine_suffix, suffix_len);
1481 if (just_machine_suffix
1482 && pprefix->require_machine_suffix == 2
1483 && is_directory (pprefix->prefix, just_machine_suffix, 0))
1486 obstack_1grow (&collect_obstack, PATH_SEPARATOR);
1489 obstack_grow (&collect_obstack, pprefix->prefix, len);
1490 obstack_grow (&collect_obstack, just_machine_suffix,
1494 if (!pprefix->require_machine_suffix)
1497 obstack_1grow (&collect_obstack, PATH_SEPARATOR);
1500 obstack_grow (&collect_obstack, pprefix->prefix, len);
1503 obstack_1grow (&collect_obstack, '\0');
1504 putenv (obstack_finish (&collect_obstack));
1508 /* Search for NAME using the prefix list PREFIXES. MODE is passed to
1509 access to check permissions.
1510 Return 0 if not found, otherwise return its name, allocated with malloc. */
1513 find_a_file (pprefix, name, mode)
1514 struct path_prefix *pprefix;
1519 char *file_suffix = ((mode & X_OK) != 0 ? EXECUTABLE_SUFFIX : "");
1520 struct prefix_list *pl;
1521 int len = pprefix->max_len + strlen (name) + strlen (file_suffix) + 1;
1524 len += strlen (machine_suffix);
1526 temp = xmalloc (len);
1528 /* Determine the filename to execute (special case for absolute paths). */
1532 if (access (name, mode))
1534 strcpy (temp, name);
1539 for (pl = pprefix->plist; pl; pl = pl->next)
1543 strcpy (temp, pl->prefix);
1544 strcat (temp, machine_suffix);
1545 strcat (temp, name);
1546 if (access (temp, mode) == 0)
1548 if (pl->used_flag_ptr != 0)
1549 *pl->used_flag_ptr = 1;
1552 /* Some systems have a suffix for executable files.
1553 So try appending that. */
1554 if (file_suffix[0] != 0)
1556 strcat (temp, file_suffix);
1557 if (access (temp, mode) == 0)
1559 if (pl->used_flag_ptr != 0)
1560 *pl->used_flag_ptr = 1;
1565 /* Certain prefixes are tried with just the machine type,
1566 not the version. This is used for finding as, ld, etc. */
1567 if (just_machine_suffix && pl->require_machine_suffix == 2)
1569 strcpy (temp, pl->prefix);
1570 strcat (temp, just_machine_suffix);
1571 strcat (temp, name);
1572 if (access (temp, mode) == 0)
1574 if (pl->used_flag_ptr != 0)
1575 *pl->used_flag_ptr = 1;
1578 /* Some systems have a suffix for executable files.
1579 So try appending that. */
1580 if (file_suffix[0] != 0)
1582 strcat (temp, file_suffix);
1583 if (access (temp, mode) == 0)
1585 if (pl->used_flag_ptr != 0)
1586 *pl->used_flag_ptr = 1;
1591 /* Certain prefixes can't be used without the machine suffix
1592 when the machine or version is explicitly specified. */
1593 if (!pl->require_machine_suffix)
1595 strcpy (temp, pl->prefix);
1596 strcat (temp, name);
1597 if (access (temp, mode) == 0)
1599 if (pl->used_flag_ptr != 0)
1600 *pl->used_flag_ptr = 1;
1603 /* Some systems have a suffix for executable files.
1604 So try appending that. */
1605 if (file_suffix[0] != 0)
1607 strcat (temp, file_suffix);
1608 if (access (temp, mode) == 0)
1610 if (pl->used_flag_ptr != 0)
1611 *pl->used_flag_ptr = 1;
1622 /* Add an entry for PREFIX in PLIST. If FIRST is set, it goes
1623 at the start of the list, otherwise it goes at the end.
1625 If WARN is nonzero, we will warn if no file is found
1626 through this prefix. WARN should point to an int
1627 which will be set to 1 if this entry is used.
1629 REQUIRE_MACHINE_SUFFIX is 1 if this prefix can't be used without
1630 the complete value of machine_suffix.
1631 2 means try both machine_suffix and just_machine_suffix. */
1634 add_prefix (pprefix, prefix, first, require_machine_suffix, warn)
1635 struct path_prefix *pprefix;
1638 int require_machine_suffix;
1641 struct prefix_list *pl, **prev;
1644 if (!first && pprefix->plist)
1646 for (pl = pprefix->plist; pl->next; pl = pl->next)
1651 prev = &pprefix->plist;
1653 /* Keep track of the longest prefix */
1655 len = strlen (prefix);
1656 if (len > pprefix->max_len)
1657 pprefix->max_len = len;
1659 pl = (struct prefix_list *) xmalloc (sizeof (struct prefix_list));
1660 pl->prefix = save_string (prefix, len);
1661 pl->require_machine_suffix = require_machine_suffix;
1662 pl->used_flag_ptr = warn;
1669 pl->next = (struct prefix_list *) 0;
1673 /* Print warnings for any prefixes in the list PPREFIX that were not used. */
1676 unused_prefix_warnings (pprefix)
1677 struct path_prefix *pprefix;
1679 struct prefix_list *pl = pprefix->plist;
1683 if (pl->used_flag_ptr != 0 && !*pl->used_flag_ptr)
1685 error ("file path prefix `%s' never used",
1687 /* Prevent duplicate warnings. */
1688 *pl->used_flag_ptr = 1;
1694 /* Get rid of all prefixes built up so far in *PLISTP. */
1697 free_path_prefix (pprefix)
1698 struct path_prefix *pprefix;
1700 struct prefix_list *pl = pprefix->plist;
1701 struct prefix_list *temp;
1707 free (temp->prefix);
1708 free ((char *) temp);
1710 pprefix->plist = (struct prefix_list *) 0;
1713 /* stdin file number. */
1714 #define STDIN_FILE_NO 0
1716 /* stdout file number. */
1717 #define STDOUT_FILE_NO 1
1719 /* value of `pipe': port index for reading. */
1722 /* value of `pipe': port index for writing. */
1723 #define WRITE_PORT 1
1725 /* Pipe waiting from last process, to be used as input for the next one.
1726 Value is STDIN_FILE_NO if no pipe is waiting
1727 (i.e. the next command is the first of a group). */
1729 static int last_pipe_input;
1731 /* Fork one piped subcommand. FUNC is the system call to use
1732 (either execv or execvp). ARGV is the arg vector to use.
1733 NOT_LAST is nonzero if this is not the last subcommand
1734 (i.e. its output should be piped to the next one.) */
1739 /* Declare these to avoid compilation error. They won't be called. */
1740 int execv(const char *a, const char **b){}
1741 int execvp(const char *a, const char **b){}
1744 pexecute (search_flag, program, argv, not_last)
1752 int i, el = search_flag ? 0 : 4;
1754 scmd = (char *)malloc (strlen (program) + strlen (temp_filename) + 6 + el);
1755 rf = scmd + strlen(program) + 2 + el;
1756 sprintf (scmd, "%s%s @%s.gp", program,
1757 (search_flag ? "" : ".exe"), temp_filename);
1758 argfile = fopen (rf, "w");
1760 pfatal_with_name (rf);
1762 for (i=1; argv[i]; i++)
1765 for (cp = argv[i]; *cp; cp++)
1767 if (*cp == '"' || *cp == '\'' || *cp == '\\' || isspace (*cp))
1768 fputc ('\\', argfile);
1769 fputc (*cp, argfile);
1771 fputc ('\n', argfile);
1781 perror_exec (program);
1782 return MIN_FATAL_STATUS << 8;
1788 #else /* not __MSDOS__ */
1791 pexecute (search_flag, program, argv, not_last)
1797 int (*func)() = (search_flag ? execv : execvp);
1800 int input_desc = last_pipe_input;
1801 int output_desc = STDOUT_FILE_NO;
1802 int retries, sleep_interval;
1804 /* If this isn't the last process, make a pipe for its output,
1805 and record it as waiting to be the input to the next process. */
1809 if (pipe (pdes) < 0)
1810 pfatal_with_name ("pipe");
1811 output_desc = pdes[WRITE_PORT];
1812 last_pipe_input = pdes[READ_PORT];
1815 last_pipe_input = STDIN_FILE_NO;
1817 /* Fork a subprocess; wait and retry if it fails. */
1819 for (retries = 0; retries < 4; retries++)
1824 sleep (sleep_interval);
1825 sleep_interval *= 2;
1832 pfatal_with_name ("fork");
1834 pfatal_with_name ("vfork");
1840 /* Move the input and output pipes into place, if nec. */
1841 if (input_desc != STDIN_FILE_NO)
1843 close (STDIN_FILE_NO);
1847 if (output_desc != STDOUT_FILE_NO)
1849 close (STDOUT_FILE_NO);
1851 close (output_desc);
1854 /* Close the parent's descs that aren't wanted here. */
1855 if (last_pipe_input != STDIN_FILE_NO)
1856 close (last_pipe_input);
1858 /* Exec the program. */
1859 (*func) (program, argv);
1860 perror_exec (program);
1866 /* In the parent, after forking.
1867 Close the descriptors that we made for this child. */
1868 if (input_desc != STDIN_FILE_NO)
1870 if (output_desc != STDOUT_FILE_NO)
1871 close (output_desc);
1873 /* Return child's process number. */
1878 #endif /* not __MSDOS__ */
1882 pexecute (search_flag, program, argv, not_last)
1888 return (search_flag ? spawnv : spawnvp) (1, program, argv);
1890 #endif /* not OS2 */
1892 /* Execute the command specified by the arguments on the current line of spec.
1893 When using pipes, this includes several piped-together commands
1894 with `|' between them.
1896 Return 0 if successful, -1 if failed. */
1902 int n_commands; /* # of command. */
1906 char *prog; /* program name. */
1907 char **argv; /* vector of args. */
1908 int pid; /* pid of process for this command. */
1911 struct command *commands; /* each command buffer with above info. */
1913 /* Count # of piped commands. */
1914 for (n_commands = 1, i = 0; i < argbuf_index; i++)
1915 if (strcmp (argbuf[i], "|") == 0)
1918 /* Get storage for each command. */
1920 = (struct command *) alloca (n_commands * sizeof (struct command));
1922 /* Split argbuf into its separate piped processes,
1923 and record info about each one.
1924 Also search for the programs that are to be run. */
1926 commands[0].prog = argbuf[0]; /* first command. */
1927 commands[0].argv = &argbuf[0];
1928 string = find_a_file (&exec_prefix, commands[0].prog, X_OK);
1930 commands[0].argv[0] = string;
1932 for (n_commands = 1, i = 0; i < argbuf_index; i++)
1933 if (strcmp (argbuf[i], "|") == 0)
1934 { /* each command. */
1936 fatal ("-pipe not supported under MS-DOS");
1938 argbuf[i] = 0; /* termination of command args. */
1939 commands[n_commands].prog = argbuf[i + 1];
1940 commands[n_commands].argv = &argbuf[i + 1];
1941 string = find_a_file (&exec_prefix, commands[n_commands].prog, X_OK);
1943 commands[n_commands].argv[0] = string;
1947 argbuf[argbuf_index] = 0;
1949 /* If -v, print what we are about to do, and maybe query. */
1953 /* Print each piped command as a separate line. */
1954 for (i = 0; i < n_commands ; i++)
1958 for (j = commands[i].argv; *j; j++)
1959 fprintf (stderr, " %s", *j);
1961 /* Print a pipe symbol after all but the last command. */
1962 if (i + 1 != n_commands)
1963 fprintf (stderr, " |");
1964 fprintf (stderr, "\n");
1968 fprintf (stderr, "\nGo ahead? (y or n) ");
1972 while (getchar () != '\n') ;
1973 if (i != 'y' && i != 'Y')
1978 /* Run each piped subprocess. */
1980 last_pipe_input = STDIN_FILE_NO;
1981 for (i = 0; i < n_commands; i++)
1983 char *string = commands[i].argv[0];
1985 commands[i].pid = pexecute (string != commands[i].prog,
1986 string, commands[i].argv,
1987 i + 1 < n_commands);
1989 if (string != commands[i].prog)
1995 /* Wait for all the subprocesses to finish.
1996 We don't care what order they finish in;
1997 we know that N_COMMANDS waits will get them all. */
2002 for (i = 0; i < n_commands; i++)
2009 status = pid = commands[i].pid;
2011 pid = wait (&status);
2019 for (j = 0; j < n_commands; j++)
2020 if (commands[j].pid == pid)
2021 prog = commands[j].prog;
2023 if ((status & 0x7F) != 0)
2025 fatal ("Internal compiler error: program %s got fatal signal %d",
2026 prog, (status & 0x7F));
2029 if (((status & 0xFF00) >> 8) >= MIN_FATAL_STATUS)
2037 /* Find all the switches given to us
2038 and make a vector describing them.
2039 The elements of the vector are strings, one per switch given.
2040 If a switch uses following arguments, then the `part1' field
2041 is the switch itself and the `args' field
2042 is a null-terminated vector containing the following arguments.
2043 The `valid' field is nonzero if any spec has looked at this switch;
2044 if it remains zero at the end of the run, it must be meaningless. */
2053 static struct switchstr *switches;
2055 static int n_switches;
2063 /* Also a vector of input files specified. */
2065 static struct infile *infiles;
2067 static int n_infiles;
2069 /* And a vector of corresponding output files is made up later. */
2071 static char **outfiles;
2073 /* Create the vector `switches' and its contents.
2074 Store its length in `n_switches'. */
2077 process_command (argc, argv)
2083 char *spec_lang = 0;
2084 int last_language_n_infiles;
2086 gcc_exec_prefix = getenv ("GCC_EXEC_PREFIX");
2091 /* Default for -V is our version number, ending at first space. */
2092 spec_version = save_string (version_string, strlen (version_string));
2093 for (temp = spec_version; *temp && *temp != ' '; temp++);
2094 if (*temp) *temp = '\0';
2096 /* Set up the default search paths. */
2098 if (gcc_exec_prefix)
2100 add_prefix (&exec_prefix, gcc_exec_prefix, 0, 0, NULL_PTR);
2101 add_prefix (&startfile_prefix, gcc_exec_prefix, 0, 0, NULL_PTR);
2104 /* COMPILER_PATH and LIBRARY_PATH have values
2105 that are lists of directory names with colons. */
2107 temp = getenv ("COMPILER_PATH");
2110 char *startp, *endp;
2111 char *nstore = (char *) alloca (strlen (temp) + 3);
2113 startp = endp = temp;
2116 if (*endp == PATH_SEPARATOR || *endp == 0)
2118 strncpy (nstore, startp, endp-startp);
2121 strcpy (nstore, "./");
2123 else if (endp[-1] != '/')
2125 nstore[endp-startp] = '/';
2126 nstore[endp-startp+1] = 0;
2129 nstore[endp-startp] = 0;
2130 add_prefix (&exec_prefix, nstore, 0, 0, NULL_PTR);
2133 endp = startp = endp + 1;
2140 temp = getenv ("LIBRARY_PATH");
2143 char *startp, *endp;
2144 char *nstore = (char *) alloca (strlen (temp) + 3);
2146 startp = endp = temp;
2149 if (*endp == PATH_SEPARATOR || *endp == 0)
2151 strncpy (nstore, startp, endp-startp);
2154 strcpy (nstore, "./");
2156 else if (endp[-1] != '/')
2158 nstore[endp-startp] = '/';
2159 nstore[endp-startp+1] = 0;
2162 nstore[endp-startp] = 0;
2163 add_prefix (&startfile_prefix, nstore, 0, 0, NULL_PTR);
2166 endp = startp = endp + 1;
2173 /* Use LPATH like LIBRARY_PATH (for the CMU build program). */
2174 temp = getenv ("LPATH");
2177 char *startp, *endp;
2178 char *nstore = (char *) alloca (strlen (temp) + 3);
2180 startp = endp = temp;
2183 if (*endp == PATH_SEPARATOR || *endp == 0)
2185 strncpy (nstore, startp, endp-startp);
2188 strcpy (nstore, "./");
2190 else if (endp[-1] != '/')
2192 nstore[endp-startp] = '/';
2193 nstore[endp-startp+1] = 0;
2196 nstore[endp-startp] = 0;
2197 add_prefix (&startfile_prefix, nstore, 0, 0, NULL_PTR);
2200 endp = startp = endp + 1;
2207 /* Convert new-style -- options to old-style. */
2208 translate_options (&argc, &argv);
2210 /* Scan argv twice. Here, the first time, just count how many switches
2211 there will be in their vector, and how many input files in theirs.
2212 Here we also parse the switches that cc itself uses (e.g. -v). */
2214 for (i = 1; i < argc; i++)
2216 if (! strcmp (argv[i], "-dumpspecs"))
2218 printf ("*asm:\n%s\n\n", asm_spec);
2219 printf ("*asm_final:\n%s\n\n", asm_final_spec);
2220 printf ("*cpp:\n%s\n\n", cpp_spec);
2221 printf ("*cc1:\n%s\n\n", cc1_spec);
2222 printf ("*cc1plus:\n%s\n\n", cc1plus_spec);
2223 printf ("*endfile:\n%s\n\n", endfile_spec);
2224 printf ("*link:\n%s\n\n", link_spec);
2225 printf ("*lib:\n%s\n\n", lib_spec);
2226 printf ("*startfile:\n%s\n\n", startfile_spec);
2227 printf ("*switches_need_spaces:\n%s\n\n", switches_need_spaces);
2228 printf ("*signed_char:\n%s\n\n", signed_char_spec);
2229 printf ("*predefines:\n%s\n\n", cpp_predefines);
2230 printf ("*cross_compile:\n%d\n\n", cross_compile);
2234 else if (! strcmp (argv[i], "-dumpversion"))
2236 printf ("%s\n", version_string);
2239 else if (! strcmp (argv[i], "-print-libgcc-file-name"))
2241 print_libgcc_file_name = 1;
2243 else if (! strcmp (argv[i], "-Xlinker"))
2245 /* Pass the argument of this option to the linker when we link. */
2248 fatal ("argument to `-Xlinker' is missing");
2251 if (!linker_options)
2253 = (char **) xmalloc (n_linker_options * sizeof (char **));
2256 = (char **) xrealloc (linker_options,
2257 n_linker_options * sizeof (char **));
2259 linker_options[n_linker_options - 1] = argv[++i];
2261 else if (! strncmp (argv[i], "-Wl,", 4))
2264 /* Pass the rest of this option to the linker when we link. */
2267 if (!linker_options)
2269 = (char **) xmalloc (n_linker_options * sizeof (char **));
2272 = (char **) xrealloc (linker_options,
2273 n_linker_options * sizeof (char **));
2275 /* Split the argument at commas. */
2277 for (j = 4; argv[i][j]; j++)
2278 if (argv[i][j] == ',')
2280 linker_options[n_linker_options - 1]
2281 = save_string (argv[i] + prev, j - prev);
2284 = (char **) xrealloc (linker_options,
2285 n_linker_options * sizeof (char **));
2288 /* Record the part after the last comma. */
2289 linker_options[n_linker_options - 1] = argv[i] + prev;
2291 else if (! strncmp (argv[i], "-Wa,", 4))
2294 /* Pass the rest of this option to the assembler. */
2296 n_assembler_options++;
2297 if (!assembler_options)
2299 = (char **) xmalloc (n_assembler_options * sizeof (char **));
2302 = (char **) xrealloc (assembler_options,
2303 n_assembler_options * sizeof (char **));
2305 /* Split the argument at commas. */
2307 for (j = 4; argv[i][j]; j++)
2308 if (argv[i][j] == ',')
2310 assembler_options[n_assembler_options - 1]
2311 = save_string (argv[i] + prev, j - prev);
2312 n_assembler_options++;
2314 = (char **) xrealloc (assembler_options,
2315 n_assembler_options * sizeof (char **));
2318 /* Record the part after the last comma. */
2319 assembler_options[n_assembler_options - 1] = argv[i] + prev;
2321 else if (argv[i][0] == '+' && argv[i][1] == 'e')
2322 /* The +e options to the C++ front-end. */
2324 else if (argv[i][0] == '-' && argv[i][1] != 0 && argv[i][1] != 'l')
2326 register char *p = &argv[i][1];
2327 register int c = *p;
2332 if (p[1] == 0 && i + 1 == argc)
2333 fatal ("argument to `-b' is missing");
2335 spec_machine = argv[++i];
2337 spec_machine = p + 1;
2342 int *temp = (int *) xmalloc (sizeof (int));
2344 if (p[1] == 0 && i + 1 == argc)
2345 fatal ("argument to `-B' is missing");
2350 add_prefix (&exec_prefix, value, 1, 0, temp);
2351 add_prefix (&startfile_prefix, value, 1, 0, temp);
2355 case 'v': /* Print our subcommands and print versions. */
2357 /* If they do anything other than exactly `-v', don't set
2358 verbose_flag; rather, continue on to give the error. */
2365 if (p[1] == 0 && i + 1 == argc)
2366 fatal ("argument to `-V' is missing");
2368 spec_version = argv[++i];
2370 spec_version = p + 1;
2374 if (!strcmp (p, "save-temps"))
2376 save_temps_flag = 1;
2383 if (SWITCH_TAKES_ARG (c) > (p[1] != 0))
2384 i += SWITCH_TAKES_ARG (c) - (p[1] != 0);
2385 else if (WORD_SWITCH_TAKES_ARG (p))
2386 i += WORD_SWITCH_TAKES_ARG (p);
2393 /* Set up the search paths before we go looking for config files. */
2395 /* These come before the md prefixes so that we will find gcc's subcommands
2396 (such as cpp) rather than those of the host system. */
2397 /* Use 2 as fourth arg meaning try just the machine as a suffix,
2398 as well as trying the machine and the version. */
2399 add_prefix (&exec_prefix, standard_exec_prefix, 0, 2, NULL_PTR);
2400 add_prefix (&exec_prefix, standard_exec_prefix_1, 0, 2, NULL_PTR);
2402 add_prefix (&startfile_prefix, standard_exec_prefix, 0, 1, NULL_PTR);
2403 add_prefix (&startfile_prefix, standard_exec_prefix_1, 0, 1, NULL_PTR);
2405 tooldir_prefix = concat (tooldir_base_prefix, spec_machine, "/");
2407 /* If tooldir is relative, base it on exec_prefix. A relative
2408 tooldir lets us move the installed tree as a unit.
2410 If GCC_EXEC_PREFIX is defined, then we want to add two relative
2411 directories, so that we can search both the user specified directory
2412 and the standard place. */
2414 if (*tooldir_prefix != '/')
2416 if (gcc_exec_prefix)
2418 char *gcc_exec_tooldir_prefix
2419 = concat (concat (gcc_exec_prefix, spec_machine, "/"),
2420 concat (spec_version, "/", tooldir_prefix),
2423 add_prefix (&exec_prefix, concat (gcc_exec_tooldir_prefix, "bin", "/"),
2425 add_prefix (&startfile_prefix, concat (gcc_exec_tooldir_prefix, "lib", "/"),
2429 tooldir_prefix = concat (concat (standard_exec_prefix, spec_machine, "/"),
2430 concat (spec_version, "/", tooldir_prefix),
2434 add_prefix (&exec_prefix, concat (tooldir_prefix, "bin", "/"),
2436 add_prefix (&startfile_prefix, concat (tooldir_prefix, "lib", "/"),
2439 /* More prefixes are enabled in main, after we read the specs file
2440 and determine whether this is cross-compilation or not. */
2443 /* Then create the space for the vectors and scan again. */
2445 switches = ((struct switchstr *)
2446 xmalloc ((n_switches + 1) * sizeof (struct switchstr)));
2447 infiles = (struct infile *) xmalloc ((n_infiles + 1) * sizeof (struct infile));
2450 last_language_n_infiles = -1;
2452 /* This, time, copy the text of each switch and store a pointer
2453 to the copy in the vector of switches.
2454 Store all the infiles in their vector. */
2456 for (i = 1; i < argc; i++)
2458 /* Just skip the switches that were handled by the preceding loop. */
2459 if (!strcmp (argv[i], "-Xlinker"))
2461 else if (! strncmp (argv[i], "-Wl,", 4))
2463 else if (! strncmp (argv[i], "-Wa,", 4))
2465 else if (! strcmp (argv[i], "-print-libgcc-file-name"))
2467 else if (argv[i][0] == '+' && argv[i][1] == 'e')
2469 /* Compensate for the +e options to the C++ front-end;
2470 they're there simply for cfront call-compatibility. We do
2471 some magic in default_compilers to pass them down properly.
2472 Note we deliberately start at the `+' here, to avoid passing
2473 -e0 or -e1 down into the linker. */
2474 switches[n_switches].part1 = &argv[i][0];
2475 switches[n_switches].args = 0;
2476 switches[n_switches].valid = 0;
2479 else if (argv[i][0] == '-' && argv[i][1] != 0 && argv[i][1] != 'l')
2481 register char *p = &argv[i][1];
2482 register int c = *p;
2484 if (c == 'B' || c == 'b' || c == 'V')
2486 /* Skip a separate arg, if any. */
2493 if (p[1] == 0 && i + 1 == argc)
2494 fatal ("argument to `-x' is missing");
2496 spec_lang = argv[++i];
2499 if (! strcmp (spec_lang, "none"))
2500 /* Suppress the warning if -xnone comes after the last input file,
2501 because alternate command interfaces like g++ might find it
2502 useful to place -xnone after each input file. */
2505 last_language_n_infiles = n_infiles;
2508 switches[n_switches].part1 = p;
2509 /* Deal with option arguments in separate argv elements. */
2510 if ((SWITCH_TAKES_ARG (c) > (p[1] != 0))
2511 || WORD_SWITCH_TAKES_ARG (p)) {
2513 int n_args = WORD_SWITCH_TAKES_ARG (p);
2516 /* Count only the option arguments in separate argv elements. */
2517 n_args = SWITCH_TAKES_ARG (c) - (p[1] != 0);
2519 if (i + n_args >= argc)
2520 fatal ("argument to `-%s' is missing", p);
2521 switches[n_switches].args
2522 = (char **) xmalloc ((n_args + 1) * sizeof (char *));
2524 switches[n_switches].args[j++] = argv[++i];
2525 /* Null-terminate the vector. */
2526 switches[n_switches].args[j] = 0;
2527 } else if (*switches_need_spaces != 0 && (c == 'o' || c == 'L')) {
2528 /* On some systems, ld cannot handle -o or -L without space.
2529 So split the -o or -L from its argument. */
2530 switches[n_switches].part1 = (c == 'o' ? "o" : "L");
2531 switches[n_switches].args = (char **) xmalloc (2 * sizeof (char *));
2532 switches[n_switches].args[0] = xmalloc (strlen (p));
2533 strcpy (switches[n_switches].args[0], &p[1]);
2534 switches[n_switches].args[1] = 0;
2536 switches[n_switches].args = 0;
2537 switches[n_switches].valid = 0;
2538 /* This is always valid, since gcc.c itself understands it. */
2539 if (!strcmp (p, "save-temps"))
2540 switches[n_switches].valid = 1;
2545 if ((argv[i][0] != '-' || argv[i][1] != 'l')
2546 && access (argv[i], R_OK) < 0)
2548 perror_with_name (argv[i]);
2553 infiles[n_infiles].language = spec_lang;
2554 infiles[n_infiles++].name = argv[i];
2559 if (n_infiles == last_language_n_infiles)
2560 error ("Warning: `-x %s' after last input file has no effect", spec_lang);
2562 switches[n_switches].part1 = 0;
2563 infiles[n_infiles].name = 0;
2565 /* If we have a GCC_EXEC_PREFIX envvar, modify it for cpp's sake. */
2566 if (gcc_exec_prefix)
2568 temp = (char *) xmalloc (strlen (gcc_exec_prefix) + strlen (spec_version)
2569 + strlen (spec_machine) + 3);
2570 strcpy (temp, gcc_exec_prefix);
2571 strcat (temp, spec_machine);
2573 strcat (temp, spec_version);
2575 gcc_exec_prefix = temp;
2579 /* Process a spec string, accumulating and running commands. */
2581 /* These variables describe the input file name.
2582 input_file_number is the index on outfiles of this file,
2583 so that the output file name can be stored for later use by %o.
2584 input_basename is the start of the part of the input file
2585 sans all directory names, and basename_length is the number
2586 of characters starting there excluding the suffix .c or whatever. */
2588 static char *input_filename;
2589 static int input_file_number;
2590 static int input_filename_length;
2591 static int basename_length;
2592 static char *input_basename;
2593 static char *input_suffix;
2595 /* These are variables used within do_spec and do_spec_1. */
2597 /* Nonzero if an arg has been started and not yet terminated
2598 (with space, tab or newline). */
2599 static int arg_going;
2601 /* Nonzero means %d or %g has been seen; the next arg to be terminated
2602 is a temporary file name. */
2603 static int delete_this_arg;
2605 /* Nonzero means %w has been seen; the next arg to be terminated
2606 is the output file name of this compilation. */
2607 static int this_is_output_file;
2609 /* Nonzero means %s has been seen; the next arg to be terminated
2610 is the name of a library file and we should try the standard
2611 search dirs for it. */
2612 static int this_is_library_file;
2614 /* Nonzero means that the input of this command is coming from a pipe. */
2615 static int input_from_pipe;
2617 /* Process the spec SPEC and run the commands specified therein.
2618 Returns 0 if the spec is successfully processed; -1 if failed. */
2628 delete_this_arg = 0;
2629 this_is_output_file = 0;
2630 this_is_library_file = 0;
2631 input_from_pipe = 0;
2633 value = do_spec_1 (spec, 0, NULL_PTR);
2635 /* Force out any unfinished command.
2636 If -pipe, this forces out the last command if it ended in `|'. */
2639 if (argbuf_index > 0 && !strcmp (argbuf[argbuf_index - 1], "|"))
2642 if (argbuf_index > 0)
2649 /* Process the sub-spec SPEC as a portion of a larger spec.
2650 This is like processing a whole spec except that we do
2651 not initialize at the beginning and we do not supply a
2652 newline by default at the end.
2653 INSWITCH nonzero means don't process %-sequences in SPEC;
2654 in this case, % is treated as an ordinary character.
2655 This is used while substituting switches.
2656 INSWITCH nonzero also causes SPC not to terminate an argument.
2658 Value is zero unless a line was finished
2659 and the command on that line reported an error. */
2662 do_spec_1 (spec, inswitch, soft_matched_part)
2665 char *soft_matched_part;
2667 register char *p = spec;
2674 /* If substituting a switch, treat all chars like letters.
2675 Otherwise, NL, SPC, TAB and % are special. */
2676 switch (inswitch ? 'a' : c)
2679 /* End of line: finish any pending argument,
2680 then run the pending command if one has been started. */
2683 obstack_1grow (&obstack, 0);
2684 string = obstack_finish (&obstack);
2685 if (this_is_library_file)
2686 string = find_file (string);
2687 store_arg (string, delete_this_arg, this_is_output_file);
2688 if (this_is_output_file)
2689 outfiles[input_file_number] = string;
2693 if (argbuf_index > 0 && !strcmp (argbuf[argbuf_index - 1], "|"))
2696 for (i = 0; i < n_switches; i++)
2697 if (!strcmp (switches[i].part1, "pipe"))
2700 /* A `|' before the newline means use a pipe here,
2701 but only if -pipe was specified.
2702 Otherwise, execute now and don't pass the `|' as an arg. */
2705 input_from_pipe = 1;
2706 switches[i].valid = 1;
2713 if (argbuf_index > 0)
2719 /* Reinitialize for a new command, and for a new argument. */
2722 delete_this_arg = 0;
2723 this_is_output_file = 0;
2724 this_is_library_file = 0;
2725 input_from_pipe = 0;
2729 /* End any pending argument. */
2732 obstack_1grow (&obstack, 0);
2733 string = obstack_finish (&obstack);
2734 if (this_is_library_file)
2735 string = find_file (string);
2736 store_arg (string, delete_this_arg, this_is_output_file);
2737 if (this_is_output_file)
2738 outfiles[input_file_number] = string;
2742 obstack_1grow (&obstack, c);
2748 /* Space or tab ends an argument if one is pending. */
2751 obstack_1grow (&obstack, 0);
2752 string = obstack_finish (&obstack);
2753 if (this_is_library_file)
2754 string = find_file (string);
2755 store_arg (string, delete_this_arg, this_is_output_file);
2756 if (this_is_output_file)
2757 outfiles[input_file_number] = string;
2759 /* Reinitialize for a new argument. */
2761 delete_this_arg = 0;
2762 this_is_output_file = 0;
2763 this_is_library_file = 0;
2770 fatal ("Invalid specification! Bug in cc.");
2773 obstack_grow (&obstack, input_basename, basename_length);
2778 delete_this_arg = 2;
2781 /* Dump out the directories specified with LIBRARY_PATH,
2782 followed by the absolute directories
2783 that we search for startfiles. */
2786 struct prefix_list *pl = startfile_prefix.plist;
2788 char *buffer = (char *) xmalloc (bufsize);
2791 for (; pl; pl = pl->next)
2793 #ifdef RELATIVE_PREFIX_NOT_LINKDIR
2794 /* Used on systems which record the specified -L dirs
2795 and use them to search for dynamic linking. */
2796 /* Relative directories always come from -B,
2797 and it is better not to use them for searching
2798 at run time. In particular, stage1 loses */
2799 if (pl->prefix[0] != '/')
2804 if (is_directory (pl->prefix, machine_suffix, 1))
2806 do_spec_1 ("-L", 0, NULL_PTR);
2807 #ifdef SPACE_AFTER_L_OPTION
2808 do_spec_1 (" ", 0, NULL_PTR);
2810 do_spec_1 (pl->prefix, 1, NULL_PTR);
2811 /* Remove slash from machine_suffix. */
2812 if (strlen (machine_suffix) >= bufsize)
2813 bufsize = strlen (machine_suffix) * 2 + 1;
2814 buffer = (char *) xrealloc (buffer, bufsize);
2815 strcpy (buffer, machine_suffix);
2816 idx = strlen (buffer);
2817 if (buffer[idx - 1] == '/')
2818 buffer[idx - 1] = 0;
2819 do_spec_1 (buffer, 1, NULL_PTR);
2820 /* Make this a separate argument. */
2821 do_spec_1 (" ", 0, NULL_PTR);
2824 if (!pl->require_machine_suffix)
2826 if (is_directory (pl->prefix, "", 1))
2828 do_spec_1 ("-L", 0, NULL_PTR);
2829 #ifdef SPACE_AFTER_L_OPTION
2830 do_spec_1 (" ", 0, NULL_PTR);
2832 /* Remove slash from pl->prefix. */
2833 if (strlen (pl->prefix) >= bufsize)
2834 bufsize = strlen (pl->prefix) * 2 + 1;
2835 buffer = (char *) xrealloc (buffer, bufsize);
2836 strcpy (buffer, pl->prefix);
2837 idx = strlen (buffer);
2838 if (buffer[idx - 1] == '/')
2839 buffer[idx - 1] = 0;
2840 do_spec_1 (buffer, 1, NULL_PTR);
2841 /* Make this a separate argument. */
2842 do_spec_1 (" ", 0, NULL_PTR);
2851 /* {...:%efoo} means report an error with `foo' as error message
2852 and don't execute any more commands for this file. */
2856 while (*p != 0 && *p != '\n') p++;
2857 buf = (char *) alloca (p - q + 1);
2858 strncpy (buf, q, p - q);
2868 if (save_temps_flag)
2869 obstack_grow (&obstack, input_basename, basename_length);
2872 #ifdef MKTEMP_EACH_FILE
2873 /* ??? This has a problem: the total number of
2874 values mktemp can return is limited.
2875 That matters for the names of object files.
2876 In 2.4, do something about that. */
2877 struct temp_name *t;
2879 while (*p == '.' || isalpha (*p))
2882 /* See if we already have an association of %g/%u/%U and
2884 for (t = temp_names; t; t = t->next)
2885 if (t->length == p - suffix
2886 && strncmp (t->suffix, suffix, p - suffix) == 0
2887 && t->unique == (c != 'g'))
2890 /* Make a new association if needed. %u requires one. */
2891 if (t == 0 || c == 'u')
2895 t = (struct temp_name *) xmalloc (sizeof (struct temp_name));
2896 t->next = temp_names;
2899 t->length = p - suffix;
2900 t->suffix = save_string (suffix, p - suffix);
2901 t->unique = (c != 'g');
2902 choose_temp_base ();
2903 t->filename = temp_filename;
2904 t->filename_length = temp_filename_length;
2907 obstack_grow (&obstack, t->filename, t->filename_length);
2908 delete_this_arg = 1;
2910 obstack_grow (&obstack, temp_filename, temp_filename_length);
2911 if (c == 'u' || c == 'U')
2917 sprintf (buff, "%d", unique);
2918 obstack_grow (&obstack, buff, strlen (buff));
2921 delete_this_arg = 1;
2927 obstack_grow (&obstack, input_filename, input_filename_length);
2932 if (gcc_exec_prefix)
2934 do_spec_1 ("-iprefix", 1, NULL_PTR);
2935 /* Make this a separate argument. */
2936 do_spec_1 (" ", 0, NULL_PTR);
2937 do_spec_1 (gcc_exec_prefix, 1, NULL_PTR);
2938 do_spec_1 (" ", 0, NULL_PTR);
2945 for (f = 0; f < n_infiles; f++)
2946 store_arg (outfiles[f], 0, 0);
2951 this_is_library_file = 1;
2955 this_is_output_file = 1;
2960 int index = argbuf_index;
2961 /* Handle the {...} following the %W. */
2964 p = handle_braces (p + 1);
2967 /* If any args were output, mark the last one for deletion
2969 if (argbuf_index != index)
2970 record_temp_file (argbuf[argbuf_index - 1], 0, 1);
2974 /* %x{OPTION} records OPTION for %X to output. */
2980 /* Skip past the option value and make a copy. */
2985 string = save_string (p1 + 1, p - p1 - 2);
2987 /* See if we already recorded this option. */
2988 for (i = 0; i < n_linker_options; i++)
2989 if (! strcmp (string, linker_options[i]))
2995 /* This option is new; add it. */
2997 if (!linker_options)
2999 = (char **) xmalloc (n_linker_options * sizeof (char **));
3002 = (char **) xrealloc (linker_options,
3003 n_linker_options * sizeof (char **));
3005 linker_options[n_linker_options - 1] = string;
3009 /* Dump out the options accumulated previously using %x,
3010 -Xlinker and -Wl,. */
3012 for (i = 0; i < n_linker_options; i++)
3014 do_spec_1 (linker_options[i], 1, NULL_PTR);
3015 /* Make each accumulated option a separate argument. */
3016 do_spec_1 (" ", 0, NULL_PTR);
3020 /* Dump out the options accumulated previously using -Wa,. */
3022 for (i = 0; i < n_assembler_options; i++)
3024 do_spec_1 (assembler_options[i], 1, NULL_PTR);
3025 /* Make each accumulated option a separate argument. */
3026 do_spec_1 (" ", 0, NULL_PTR);
3030 /* Here are digits and numbers that just process
3031 a certain constant string as a spec. */
3034 value = do_spec_1 (cc1_spec, 0, NULL_PTR);
3040 value = do_spec_1 (cc1plus_spec, 0, NULL_PTR);
3046 value = do_spec_1 (asm_spec, 0, NULL_PTR);
3052 value = do_spec_1 (asm_final_spec, 0, NULL_PTR);
3058 value = do_spec_1 (signed_char_spec, 0, NULL_PTR);
3064 value = do_spec_1 (cpp_spec, 0, NULL_PTR);
3070 value = do_spec_1 (endfile_spec, 0, NULL_PTR);
3076 value = do_spec_1 (link_spec, 0, NULL_PTR);
3082 value = do_spec_1 (lib_spec, 0, NULL_PTR);
3089 char *x = (char *) alloca (strlen (cpp_predefines) + 1);
3093 /* Copy all of the -D options in CPP_PREDEFINES into BUF. */
3097 if (! strncmp (y, "-D", 2))
3098 /* Copy the whole option. */
3099 while (*y && *y != ' ' && *y != '\t')
3101 else if (*y == ' ' || *y == '\t')
3102 /* Copy whitespace to the result. */
3104 /* Don't copy other options. */
3111 value = do_spec_1 (buf, 0, NULL_PTR);
3119 char *x = (char *) alloca (strlen (cpp_predefines) * 4 + 1);
3123 /* Copy all of CPP_PREDEFINES into BUF,
3124 but put __ after every -D and at the end of each arg. */
3128 if (! strncmp (y, "-D", 2))
3135 if (strncmp (y, "__", 2))
3137 /* Stick __ at front of macro name. */
3140 /* Arrange to stick __ at the end as well. */
3144 /* Copy the macro name. */
3145 while (*y && *y != '=' && *y != ' ' && *y != '\t')
3154 /* Copy the value given, if any. */
3155 while (*y && *y != ' ' && *y != '\t')
3158 else if (*y == ' ' || *y == '\t')
3159 /* Copy whitespace to the result. */
3161 /* Don't copy -A options */
3167 /* Copy all of CPP_PREDEFINES into BUF,
3168 but put __ after every -D. */
3172 if (! strncmp (y, "-D", 2))
3177 if (strncmp (y, "__", 2))
3179 /* Stick __ at front of macro name. */
3184 /* Copy the macro name. */
3185 while (*y && *y != '=' && *y != ' ' && *y != '\t')
3188 /* Copy the value given, if any. */
3189 while (*y && *y != ' ' && *y != '\t')
3192 else if (*y == ' ' || *y == '\t')
3193 /* Copy whitespace to the result. */
3195 /* Don't copy -A options */
3201 /* Copy all of the -A options in CPP_PREDEFINES into BUF. */
3205 if (! strncmp (y, "-A", 2))
3206 /* Copy the whole option. */
3207 while (*y && *y != ' ' && *y != '\t')
3209 else if (*y == ' ' || *y == '\t')
3210 /* Copy whitespace to the result. */
3212 /* Don't copy other options. */
3219 value = do_spec_1 (buf, 0, NULL_PTR);
3226 value = do_spec_1 (startfile_spec, 0, NULL_PTR);
3231 /* Here we define characters other than letters and digits. */
3234 p = handle_braces (p);
3240 obstack_1grow (&obstack, '%');
3244 do_spec_1 (soft_matched_part, 1, NULL_PTR);
3245 do_spec_1 (" ", 0, NULL_PTR);
3248 /* Process a string found as the value of a spec given by name.
3249 This feature allows individual machine descriptions
3250 to add and use their own specs.
3251 %[...] modifies -D options the way %P does;
3252 %(...) uses the spec unmodified. */
3257 struct spec_list *sl;
3260 /* The string after the S/P is the name of a spec that is to be
3262 while (*p && *p != ')' && *p != ']')
3265 /* See if it's in the list */
3266 for (len = p - name, sl = specs; sl; sl = sl->next)
3267 if (strncmp (sl->name, name, len) == 0 && !sl->name[len])
3277 value = do_spec_1 (name, 0, NULL_PTR);
3283 char *x = (char *) alloca (strlen (name) * 2 + 1);
3287 /* Copy all of NAME into BUF, but put __ after
3288 every -D and at the end of each arg, */
3291 if (! strncmp (y, "-D", 2))
3299 else if (*y == ' ' || *y == 0)
3313 value = do_spec_1 (buf, 0, NULL_PTR);
3319 /* Discard the closing paren or bracket. */
3326 if (input_from_pipe)
3327 do_spec_1 ("-", 0, NULL_PTR);
3336 /* Backslash: treat next character as ordinary. */
3341 /* Ordinary character: put it into the current argument. */
3342 obstack_1grow (&obstack, c);
3346 return 0; /* End of string */
3349 /* Return 0 if we call do_spec_1 and that returns -1. */
3362 /* A `|' after the open-brace means,
3363 if the test fails, output a single minus sign rather than nothing.
3364 This is used in %{|!pipe:...}. */
3368 /* A `!' after the open-brace negates the condition:
3369 succeed if the specified switch is not present. */
3373 /* A `.' after the open-brace means test against the current suffix. */
3383 while (*p != ':' && *p != '}') p++;
3386 register int count = 1;
3404 int found = (input_suffix != 0
3405 && strlen (input_suffix) == p - filter
3406 && strncmp (input_suffix, filter, p - filter) == 0);
3412 && do_spec_1 (save_string (p + 1, q - p - 2), 0, NULL_PTR) < 0)
3417 else if (p[-1] == '*' && p[0] == '}')
3419 /* Substitute all matching switches as separate args. */
3422 for (i = 0; i < n_switches; i++)
3423 if (!strncmp (switches[i].part1, filter, p - filter))
3428 /* Test for presence of the specified switch. */
3432 /* If name specified ends in *, as in {x*:...},
3433 check for %* and handle that case. */
3434 if (p[-1] == '*' && !negate)
3439 /* First see whether we have %*. */
3443 if (*r == '%' && r[1] == '*')
3447 /* If we do, handle that case. */
3450 /* Substitute all matching switches as separate args.
3451 But do this by substituting for %*
3452 in the text that follows the colon. */
3454 unsigned hard_match_len = p - filter - 1;
3455 char *string = save_string (p + 1, q - p - 2);
3457 for (i = 0; i < n_switches; i++)
3458 if (!strncmp (switches[i].part1, filter, hard_match_len))
3460 do_spec_1 (string, 0, &switches[i].part1[hard_match_len]);
3461 /* Pass any arguments this switch has. */
3469 /* If name specified ends in *, as in {x*:...},
3470 check for presence of any switch name starting with x. */
3473 for (i = 0; i < n_switches; i++)
3475 unsigned hard_match_len = p - filter - 1;
3477 if (!strncmp (switches[i].part1, filter, hard_match_len))
3479 switches[i].valid = 1;
3484 /* Otherwise, check for presence of exact name specified. */
3487 for (i = 0; i < n_switches; i++)
3489 if (!strncmp (switches[i].part1, filter, p - filter)
3490 && switches[i].part1[p - filter] == 0)
3492 switches[i].valid = 1;
3499 /* If it is as desired (present for %{s...}, absent for %{-s...})
3500 then substitute either the switch or the specified
3501 conditional text. */
3502 if (present != negate)
3510 if (do_spec_1 (save_string (p + 1, q - p - 2), 0, NULL_PTR) < 0)
3516 /* Here if a %{|...} conditional fails: output a minus sign,
3517 which means "standard output" or "standard input". */
3518 do_spec_1 ("-", 0, NULL_PTR);
3525 /* Pass a switch to the current accumulating command
3526 in the same form that we received it.
3527 SWITCHNUM identifies the switch; it is an index into
3528 the vector of switches gcc received, which is `switches'.
3529 This cannot fail since it never finishes a command line.
3531 If OMIT_FIRST_WORD is nonzero, then we omit .part1 of the argument. */
3534 give_switch (switchnum, omit_first_word)
3536 int omit_first_word;
3538 if (!omit_first_word)
3540 do_spec_1 ("-", 0, NULL_PTR);
3541 do_spec_1 (switches[switchnum].part1, 1, NULL_PTR);
3543 do_spec_1 (" ", 0, NULL_PTR);
3544 if (switches[switchnum].args != 0)
3547 for (p = switches[switchnum].args; *p; p++)
3549 do_spec_1 (*p, 1, NULL_PTR);
3550 do_spec_1 (" ", 0, NULL_PTR);
3553 switches[switchnum].valid = 1;
3556 /* Search for a file named NAME trying various prefixes including the
3557 user's -B prefix and some standard ones.
3558 Return the absolute file name found. If nothing is found, return NAME. */
3566 newname = find_a_file (&startfile_prefix, name, R_OK);
3567 return newname ? newname : name;
3570 /* Determine whether a directory exists. If LINKER, return 0 for
3571 certain fixed names not needed by the linker. If not LINKER, it is
3572 only important to return 0 if the host machine has a small ARG_MAX
3576 is_directory (path1, path2, linker)
3581 int len1 = strlen (path1);
3582 int len2 = strlen (path2);
3583 char *path = (char *) alloca (3 + len1 + len2);
3587 #ifndef SMALL_ARG_MAX
3592 /* Construct the path from the two parts. Ensure the string ends with "/.".
3593 The resulting path will be a directory even if the given path is a
3595 bcopy (path1, path, len1);
3596 bcopy (path2, path + len1, len2);
3597 cp = path + len1 + len2;
3603 /* Exclude directories that the linker is known to search. */
3605 && ((cp - path == 6 && strcmp (path, "/lib/.") == 0)
3606 || (cp - path == 10 && strcmp (path, "/usr/lib/.") == 0)))
3609 return (stat (path, &st) >= 0 && S_ISDIR (st.st_mode));
3612 /* On fatal signals, delete all the temporary files. */
3615 fatal_error (signum)
3618 signal (signum, SIG_DFL);
3619 delete_failure_queue ();
3620 delete_temp_files ();
3621 /* Get the same signal again, this time not handled,
3622 so its normal effect occurs. */
3623 kill (getpid (), signum);
3634 int linker_was_run = 0;
3635 char *explicit_link_files;
3639 p = argv[0] + strlen (argv[0]);
3640 while (p != argv[0] && p[-1] != '/') --p;
3643 if (signal (SIGINT, SIG_IGN) != SIG_IGN)
3644 signal (SIGINT, fatal_error);
3646 if (signal (SIGHUP, SIG_IGN) != SIG_IGN)
3647 signal (SIGHUP, fatal_error);
3649 if (signal (SIGTERM, SIG_IGN) != SIG_IGN)
3650 signal (SIGTERM, fatal_error);
3652 if (signal (SIGPIPE, SIG_IGN) != SIG_IGN)
3653 signal (SIGPIPE, fatal_error);
3657 argbuf = (char **) xmalloc (argbuf_length * sizeof (char *));
3659 obstack_init (&obstack);
3661 /* Set up to remember the pathname of gcc and any options
3662 needed for collect. We use argv[0] instead of programname because
3663 we need the complete pathname. */
3664 obstack_init (&collect_obstack);
3665 obstack_grow (&collect_obstack, "COLLECT_GCC=", sizeof ("COLLECT_GCC=")-1);
3666 obstack_grow (&collect_obstack, argv[0], strlen (argv[0])+1);
3667 putenv (obstack_finish (&collect_obstack));
3669 /* Choose directory for temp files. */
3671 choose_temp_base ();
3673 /* Make a table of what switches there are (switches, n_switches).
3674 Make a table of specified input files (infiles, n_infiles).
3675 Decode switches that are handled locally. */
3677 process_command (argc, argv);
3679 /* Initialize the vector of specs to just the default.
3680 This means one element containing 0s, as a terminator. */
3682 compilers = (struct compiler *) xmalloc (sizeof default_compilers);
3683 bcopy (default_compilers, compilers, sizeof default_compilers);
3684 n_compilers = n_default_compilers;
3686 /* Read specs from a file if there is one. */
3688 machine_suffix = concat (spec_machine, "/", concat (spec_version, "/", ""));
3689 just_machine_suffix = concat (spec_machine, "/", "");
3691 specs_file = find_a_file (&startfile_prefix, "specs", R_OK);
3692 /* Read the specs file unless it is a default one. */
3693 if (specs_file != 0 && strcmp (specs_file, "specs"))
3694 read_specs (specs_file);
3696 /* If not cross-compiling, look for startfiles in the standard places. */
3697 /* The fact that these are done here, after reading the specs file,
3698 means that it cannot be found in these directories.
3699 But that's okay. It should never be there anyway. */
3702 #ifdef MD_EXEC_PREFIX
3703 add_prefix (&exec_prefix, md_exec_prefix, 0, 0, NULL_PTR);
3704 add_prefix (&startfile_prefix, md_exec_prefix, 0, 0, NULL_PTR);
3707 #ifdef MD_STARTFILE_PREFIX
3708 add_prefix (&startfile_prefix, md_startfile_prefix, 0, 0, NULL_PTR);
3711 #ifdef MD_STARTFILE_PREFIX_1
3712 add_prefix (&startfile_prefix, md_startfile_prefix_1, 0, 0, NULL_PTR);
3715 add_prefix (&startfile_prefix, standard_startfile_prefix, 0, 0,
3717 add_prefix (&startfile_prefix, standard_startfile_prefix_1, 0, 0,
3719 add_prefix (&startfile_prefix, standard_startfile_prefix_2, 0, 0,
3721 #if 0 /* Can cause surprises, and one can use -B./ instead. */
3722 add_prefix (&startfile_prefix, "./", 0, 1, NULL_PTR);
3726 /* Now we have the specs.
3727 Set the `valid' bits for switches that match anything in any spec. */
3729 validate_all_switches ();
3731 /* Warn about any switches that no pass was interested in. */
3733 for (i = 0; i < n_switches; i++)
3734 if (! switches[i].valid)
3735 error ("unrecognized option `-%s'", switches[i].part1);
3737 if (print_libgcc_file_name)
3739 printf ("%s\n", find_file ("libgcc.a"));
3743 /* Obey some of the options. */
3747 fprintf (stderr, "gcc version %s\n", version_string);
3753 fatal ("No input files");
3755 /* Make a place to record the compiler output file names
3756 that correspond to the input files. */
3758 outfiles = (char **) xmalloc (n_infiles * sizeof (char *));
3759 bzero (outfiles, n_infiles * sizeof (char *));
3761 /* Record which files were specified explicitly as link input. */
3763 explicit_link_files = xmalloc (n_infiles);
3764 bzero (explicit_link_files, n_infiles);
3766 for (i = 0; i < n_infiles; i++)
3768 register struct compiler *cp = 0;
3769 int this_file_error = 0;
3771 /* Tell do_spec what to substitute for %i. */
3773 input_filename = infiles[i].name;
3774 input_filename_length = strlen (input_filename);
3775 input_file_number = i;
3777 /* Use the same thing in %o, unless cp->spec says otherwise. */
3779 outfiles[i] = input_filename;
3781 /* Figure out which compiler from the file's suffix. */
3783 cp = lookup_compiler (infiles[i].name, input_filename_length,
3784 infiles[i].language);
3788 /* Ok, we found an applicable compiler. Run its spec. */
3789 /* First say how much of input_filename to substitute for %b */
3793 input_basename = input_filename;
3794 for (p = input_filename; *p; p++)
3796 input_basename = p + 1;
3798 /* Find a suffix starting with the last period,
3799 and set basename_length to exclude that suffix. */
3800 basename_length = strlen (input_basename);
3801 p = input_basename + basename_length;
3802 while (p != input_basename && *p != '.') --p;
3803 if (*p == '.' && p != input_basename)
3805 basename_length = p - input_basename;
3806 input_suffix = p + 1;
3812 for (j = 0; j < sizeof cp->spec / sizeof cp->spec[0]; j++)
3814 len += strlen (cp->spec[j]);
3816 p = (char *) xmalloc (len + 1);
3819 for (j = 0; j < sizeof cp->spec / sizeof cp->spec[0]; j++)
3822 strcpy (p + len, cp->spec[j]);
3823 len += strlen (cp->spec[j]);
3826 value = do_spec (p);
3829 this_file_error = 1;
3832 /* If this file's name does not contain a recognized suffix,
3833 record it as explicit linker input. */
3836 explicit_link_files[i] = 1;
3838 /* Clear the delete-on-failure queue, deleting the files in it
3839 if this compilation failed. */
3841 if (this_file_error)
3843 delete_failure_queue ();
3846 /* If this compilation succeeded, don't delete those files later. */
3847 clear_failure_queue ();
3850 /* Run ld to link all the compiler output files. */
3852 if (error_count == 0)
3854 int tmp = execution_count;
3858 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
3860 putenv_from_prefixes (&exec_prefix, "COMPILER_PATH=");
3861 putenv_from_prefixes (&startfile_prefix, "LIBRARY_PATH=");
3863 /* Build COLLECT_GCC_OPTIONS to have all of the options specified to
3865 obstack_grow (&collect_obstack, "COLLECT_GCC_OPTIONS=",
3866 sizeof ("COLLECT_GCC_OPTIONS=")-1);
3869 for (i = 0; i < n_switches; i++)
3873 obstack_grow (&collect_obstack, " ", 1);
3876 obstack_grow (&collect_obstack, "-", 1);
3877 obstack_grow (&collect_obstack, switches[i].part1,
3878 strlen (switches[i].part1));
3880 for (args = switches[i].args; args && *args; args++)
3882 obstack_grow (&collect_obstack, " ", 1);
3883 obstack_grow (&collect_obstack, *args, strlen (*args));
3886 obstack_grow (&collect_obstack, "\0", 1);
3887 putenv (obstack_finish (&collect_obstack));
3889 value = do_spec (link_command_spec);
3892 linker_was_run = (tmp != execution_count);
3895 /* Warn if a -B option was specified but the prefix was never used. */
3896 unused_prefix_warnings (&exec_prefix);
3897 unused_prefix_warnings (&startfile_prefix);
3899 /* If options said don't run linker,
3900 complain about input files to be given to the linker. */
3902 if (! linker_was_run && error_count == 0)
3903 for (i = 0; i < n_infiles; i++)
3904 if (explicit_link_files[i])
3905 error ("%s: linker input file unused since linking not done",
3908 /* Delete some or all of the temporary files we made. */
3911 delete_failure_queue ();
3912 delete_temp_files ();
3914 exit (error_count > 0 ? (signal_count ? 2 : 1) : 0);
3919 /* Find the proper compilation spec for the file name NAME,
3920 whose length is LENGTH. LANGUAGE is the specified language,
3921 or 0 if none specified. */
3923 static struct compiler *
3924 lookup_compiler (name, length, language)
3929 struct compiler *cp;
3931 /* Look for the language, if one is spec'd. */
3934 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
3938 if (cp->suffix[0] == '@'
3939 && !strcmp (cp->suffix + 1, language))
3943 error ("language %s not recognized", language);
3946 /* Look for a suffix. */
3947 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
3949 if (/* The suffix `-' matches only the file name `-'. */
3950 (!strcmp (cp->suffix, "-") && !strcmp (name, "-"))
3952 (strlen (cp->suffix) < length
3953 /* See if the suffix matches the end of NAME. */
3954 && !strcmp (cp->suffix,
3955 name + length - strlen (cp->suffix))))
3957 if (cp->spec[0][0] == '@')
3959 struct compiler *new;
3960 /* An alias entry maps a suffix to a language.
3961 Search for the language; pass 0 for NAME and LENGTH
3962 to avoid infinite recursion if language not found.
3963 Construct the new compiler spec. */
3964 language = cp->spec[0] + 1;
3965 new = (struct compiler *) xmalloc (sizeof (struct compiler));
3966 new->suffix = cp->suffix;
3967 bcopy (lookup_compiler (NULL_PTR, 0, language)->spec,
3968 new->spec, sizeof new->spec);
3971 /* A non-alias entry: return it. */
3983 register char *value = (char *) malloc (size);
3985 fatal ("virtual memory exhausted");
3990 xrealloc (ptr, size)
3994 register char *value = (char *) realloc (ptr, size);
3996 fatal ("virtual memory exhausted");
4000 /* Return a newly-allocated string whose contents concatenate those of s1, s2, s3. */
4006 int len1 = strlen (s1), len2 = strlen (s2), len3 = strlen (s3);
4007 char *result = xmalloc (len1 + len2 + len3 + 1);
4009 strcpy (result, s1);
4010 strcpy (result + len1, s2);
4011 strcpy (result + len1 + len2, s3);
4012 *(result + len1 + len2 + len3) = 0;
4018 save_string (s, len)
4022 register char *result = xmalloc (len + 1);
4024 bcopy (s, result, len);
4030 pfatal_with_name (name)
4035 if (errno < sys_nerr)
4036 s = concat ("%s: ", sys_errlist[errno], "");
4038 s = "cannot open %s";
4043 perror_with_name (name)
4048 if (errno < sys_nerr)
4049 s = concat ("%s: ", sys_errlist[errno], "");
4051 s = "cannot open %s";
4061 if (errno < sys_nerr)
4062 s = concat ("installation problem, cannot exec %s: ",
4063 sys_errlist[errno], "");
4065 s = "installation problem, cannot exec %s";
4069 /* More 'friendly' abort that prints the line and file.
4070 config.h can #define abort fancy_abort if you like that sort of thing. */
4075 fatal ("Internal gcc abort.");
4080 /* Output an error message and exit */
4090 format = va_arg (ap, char *);
4091 fprintf (stderr, "%s: ", programname);
4092 vfprintf (stderr, format, ap);
4094 fprintf (stderr, "\n");
4095 delete_temp_files ();
4107 format = va_arg (ap, char *);
4108 fprintf (stderr, "%s: ", programname);
4109 vfprintf (stderr, format, ap);
4112 fprintf (stderr, "\n");
4115 #else /* not HAVE_VPRINTF */
4118 fatal (msg, arg1, arg2)
4119 char *msg, *arg1, *arg2;
4121 error (msg, arg1, arg2);
4122 delete_temp_files ();
4127 error (msg, arg1, arg2)
4128 char *msg, *arg1, *arg2;
4130 fprintf (stderr, "%s: ", programname);
4131 fprintf (stderr, msg, arg1, arg2);
4132 fprintf (stderr, "\n");
4135 #endif /* not HAVE_VPRINTF */
4139 validate_all_switches ()
4141 struct compiler *comp;
4144 struct spec_list *spec;
4146 for (comp = compilers; comp->spec[0]; comp++)
4149 for (i = 0; i < sizeof comp->spec / sizeof comp->spec[0] && comp->spec[i]; i++)
4153 if (c == '%' && *p == '{')
4154 /* We have a switch spec. */
4155 validate_switches (p + 1);
4159 /* look through the linked list of extra specs read from the specs file */
4160 for (spec = specs; spec ; spec = spec->next)
4164 if (c == '%' && *p == '{')
4165 /* We have a switch spec. */
4166 validate_switches (p + 1);
4169 p = link_command_spec;
4171 if (c == '%' && *p == '{')
4172 /* We have a switch spec. */
4173 validate_switches (p + 1);
4175 /* Now notice switches mentioned in the machine-specific specs. */
4179 if (c == '%' && *p == '{')
4180 /* We have a switch spec. */
4181 validate_switches (p + 1);
4185 if (c == '%' && *p == '{')
4186 /* We have a switch spec. */
4187 validate_switches (p + 1);
4191 if (c == '%' && *p == '{')
4192 /* We have a switch spec. */
4193 validate_switches (p + 1);
4195 p = signed_char_spec;
4197 if (c == '%' && *p == '{')
4198 /* We have a switch spec. */
4199 validate_switches (p + 1);
4203 if (c == '%' && *p == '{')
4204 /* We have a switch spec. */
4205 validate_switches (p + 1);
4209 if (c == '%' && *p == '{')
4210 /* We have a switch spec. */
4211 validate_switches (p + 1);
4215 if (c == '%' && *p == '{')
4216 /* We have a switch spec. */
4217 validate_switches (p + 1);
4221 if (c == '%' && *p == '{')
4222 /* We have a switch spec. */
4223 validate_switches (p + 1);
4227 if (c == '%' && *p == '{')
4228 /* We have a switch spec. */
4229 validate_switches (p + 1);
4232 /* Look at the switch-name that comes after START
4233 and mark as valid all supplied switches that match it. */
4236 validate_switches (start)
4239 register char *p = start;
4254 while (*p != ':' && *p != '}') p++;
4258 else if (p[-1] == '*')
4260 /* Mark all matching switches as valid. */
4262 for (i = 0; i < n_switches; i++)
4263 if (!strncmp (switches[i].part1, filter, p - filter))
4264 switches[i].valid = 1;
4268 /* Mark an exact matching switch as valid. */
4269 for (i = 0; i < n_switches; i++)
4271 if (!strncmp (switches[i].part1, filter, p - filter)
4272 && switches[i].part1[p - filter] == 0)
4273 switches[i].valid = 1;