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"))
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 #ifdef LINK_LIBGCC_SPECIAL_1
580 /* Have gcc do the search for libgcc.a, but generate -L options as usual. */
581 static char *link_command_spec = "\
583 %{!c:%{!M:%{!MM:%{!E:%{!S:ld %l %X %{o*} %{A} %{d} %{e*} %{m} %{N} %{n} \
584 %{r} %{s} %{T*} %{t} %{u*} %{x} %{z}\
585 %{!A:%{!nostartfiles:%{!nostdlib:%S}}} %{static:}\
586 %{L*} %D %o %{!nostdlib:libgcc.a%s %L libgcc.a%s %{!A:%E}}\n }}}}}}";
588 #ifdef LINK_LIBGCC_SPECIAL
589 /* Have gcc do the search for libgcc.a, and don't generate -L options. */
590 static char *link_command_spec = "\
592 %{!c:%{!M:%{!MM:%{!E:%{!S:ld %l %X %{o*} %{A} %{d} %{e*} %{m} %{N} %{n} \
593 %{r} %{s} %{T*} %{t} %{u*} %{x} %{z}\
594 %{!A:%{!nostartfiles:%{!nostdlib:%S}}} %{static:}\
595 %{L*} %o %{!nostdlib:libgcc.a%s %L libgcc.a%s %{!A:%E}}\n }}}}}}";
597 /* Use -L and have the linker do the search for -lgcc. */
598 static char *link_command_spec = "\
600 %{!c:%{!M:%{!MM:%{!E:%{!S:ld %l %X %{o*} %{A} %{d} %{e*} %{m} %{N} %{n} \
601 %{r} %{s} %{T*} %{t} %{u*} %{x} %{z}\
602 %{!A:%{!nostartfiles:%{!nostdlib:%S}}} %{static:}\
603 %{L*} %D %o %{!nostdlib:-lgcc %L -lgcc %{!A:%E}}\n }}}}}}";
607 /* A vector of options to give to the linker.
608 These options are accumulated by -Xlinker and -Wl,
609 and substituted into the linker command with %X. */
610 static int n_linker_options;
611 static char **linker_options;
613 /* A vector of options to give to the assembler.
614 These options are accumulated by -Wa,
615 and substituted into the assembler command with %X. */
616 static int n_assembler_options;
617 static char **assembler_options;
619 /* Define how to map long options into short ones. */
621 /* This structure describes one mapping. */
624 /* The long option's name. */
626 /* The equivalent short option. */
628 /* Argument info. A string of flag chars; NULL equals no options.
629 a => argument required.
630 o => argument optional.
631 j => join argument to equivalent, making one word.
632 * => allow other text after NAME as an argument. */
636 /* This is the table of mappings. Mappings are tried sequentially
637 for each option encountered; the first one that matches, wins. */
639 struct option_map option_map[] =
641 {"--profile-blocks", "-a", 0},
642 {"--target", "-b", "a"},
643 {"--compile", "-c", 0},
644 {"--dump", "-d", "a"},
645 {"--entry", "-e", 0},
646 {"--debug", "-g", "oj"},
647 {"--include", "-include", "a"},
648 {"--imacros", "-imacros", "a"},
649 {"--include-prefix", "-iprefix", "a"},
650 {"--include-directory-after", "-idirafter", "a"},
651 {"--include-with-prefix", "-iwithprefix", "a"},
652 {"--machine-", "-m", "*j"},
653 {"--machine", "-m", "aj"},
654 {"--no-standard-includes", "-nostdinc", 0},
655 {"--no-standard-libraries", "-nostdlib", 0},
656 {"--no-precompiled-includes", "-noprecomp", 0},
657 {"--output", "-o", "a"},
658 {"--profile", "-p", 0},
659 {"--quiet", "-q", 0},
660 {"--silent", "-q", 0},
661 {"--force-link", "-u", "a"},
662 {"--verbose", "-v", 0},
663 {"--version", "-dumpversion", 0},
664 {"--no-warnings", "-w", 0},
665 {"--language", "-x", "a"},
667 {"--assert", "-A", "a"},
668 {"--prefix", "-B", "a"},
669 {"--comments", "-C", 0},
670 {"--define-macro", "-D", "a"},
671 {"--preprocess", "-E", 0},
672 {"--trace-includes", "-H", 0},
673 {"--include-directory", "-I", "a"},
674 {"--include-barrier", "-I-", 0},
675 {"--library-directory", "-L", "a"},
676 {"--dependencies", "-M", 0},
677 {"--user-dependencies", "-MM", 0},
678 {"--write-dependencies", "-MD", 0},
679 {"--write-user-dependencies", "-MMD", 0},
680 {"--optimize", "-O", "oj"},
681 {"--no-line-commands", "-P", 0},
682 {"--assemble", "-S", 0},
683 {"--undefine-macro", "-U", "a"},
684 {"--use-version", "-V", "a"},
685 {"--for-assembler", "-Wa", "a"},
686 {"--extra-warnings", "-W", 0},
687 {"--all-warnings", "-Wall", 0},
688 {"--warn-", "-W", "*j"},
689 {"--for-linker", "-Xlinker", "a"},
691 {"--ansi", "-ansi", 0},
692 {"--traditional", "-traditional", 0},
693 {"--traditional-cpp", "-traditional-cpp", 0},
694 {"--trigraphs", "-trigraphs", 0},
695 {"--pipe", "-pipe", 0},
696 {"--dumpbase", "-dumpbase", "a"},
697 {"--pedantic", "-pedantic", 0},
698 {"--pedantic-errors", "-pedantic-errors", 0},
699 {"--save-temps", "-save-temps", 0},
700 {"--print-libgcc-file-name", "-print-libgcc-file-name", 0},
701 {"--static", "-static", 0},
702 {"--shared", "-shared", 0},
703 {"--symbolic", "-symbolic", 0},
707 /* Translate the options described by *ARGCP and *ARGVP.
708 Make a new vector and store it back in *ARGVP,
709 and store its length in *ARGVC. */
712 translate_options (argcp, argvp)
718 char **argv = *argvp;
719 char **newv = (char **) xmalloc ((argc + 2) * 2 * sizeof (char *));
723 newv[newindex++] = argv[i++];
727 /* Translate -- options. */
728 if (argv[i][0] == '-' && argv[i][1] == '-')
730 /* Find a mapping that applies to this option. */
731 for (j = 0; j < sizeof (option_map) / sizeof (option_map[0]); j++)
733 int optlen = strlen (option_map[j].name);
734 int complen = strlen (argv[i]);
735 char *arginfo = option_map[j].arg_info;
739 if (complen > optlen)
741 if (!strncmp (argv[i], option_map[j].name, complen))
743 int extra = strlen (argv[i]) > optlen;
748 /* If the option has an argument, accept that. */
749 if (argv[i][optlen] == '=')
750 arg = argv[i] + optlen + 1;
751 /* If this mapping allows extra text at end of name,
752 accept that as "argument". */
753 else if (index (arginfo, '*') != 0)
754 arg = argv[i] + optlen;
755 /* Otherwise, extra text at end means mismatch.
756 Try other mappings. */
760 else if (index (arginfo, '*') != 0)
761 error ("Incomplete `%s' option", option_map[j].name);
763 /* Handle arguments. */
764 if (index (arginfo, 'o') != 0)
769 error ("Missing argument to `%s' option",
774 else if (index (arginfo, 'a') == 0)
777 error ("Extraneous argument to `%s' option",
782 /* Store the translation as one argv elt or as two. */
783 if (arg != 0 && index (arginfo, 'j') != 0)
784 newv[newindex++] = concat (option_map[j].equivalent,
788 newv[newindex++] = option_map[j].equivalent;
789 newv[newindex++] = arg;
792 newv[newindex++] = option_map[j].equivalent;
799 /* Handle old-fashioned options--just copy them through,
800 with their arguments. */
801 else if (argv[i][0] == '-')
803 char *p = argv[i] + 1;
807 if (SWITCH_TAKES_ARG (c) > (p[1] != 0))
808 nskip += SWITCH_TAKES_ARG (c) - (p[1] != 0);
809 else if (WORD_SWITCH_TAKES_ARG (p))
810 nskip += WORD_SWITCH_TAKES_ARG (p);
814 newv[newindex++] = argv[i++];
819 /* Ordinary operands, or +e options. */
820 newv[newindex++] = argv[i++];
829 /* Read compilation specs from a file named FILENAME,
830 replacing the default ones.
832 A suffix which starts with `*' is a definition for
833 one of the machine-specific sub-specs. The "suffix" should be
834 *asm, *cc1, *cpp, *link, *startfile, *signed_char, etc.
835 The corresponding spec is stored in asm_spec, etc.,
836 rather than in the `compilers' vector.
838 Anything invalid in the file is a fatal error. */
841 read_specs (filename)
850 fprintf (stderr, "Reading specs from %s\n", filename);
852 /* Open and stat the file. */
853 desc = open (filename, 0, 0);
855 pfatal_with_name (filename);
856 if (stat (filename, &statbuf) < 0)
857 pfatal_with_name (filename);
859 /* Read contents of file into BUFFER. */
860 buffer = xmalloc ((unsigned) statbuf.st_size + 1);
861 read (desc, buffer, (unsigned) statbuf.st_size);
862 buffer[statbuf.st_size] = 0;
865 /* Scan BUFFER for specs, putting them in the vector. */
871 char *in, *out, *p1, *p2;
873 /* Advance P in BUFFER to the next nonblank nocomment line. */
874 p = skip_whitespace (p);
878 /* Find the colon that should end the suffix. */
880 while (*p1 && *p1 != ':' && *p1 != '\n') p1++;
881 /* The colon shouldn't be missing. */
883 fatal ("specs file malformed after %d characters", p1 - buffer);
884 /* Skip back over trailing whitespace. */
886 while (p2 > buffer && (p2[-1] == ' ' || p2[-1] == '\t')) p2--;
887 /* Copy the suffix to a string. */
888 suffix = save_string (p, p2 - p);
889 /* Find the next line. */
890 p = skip_whitespace (p1 + 1);
892 fatal ("specs file malformed after %d characters", p - buffer);
894 /* Find next blank line. */
895 while (*p1 && !(*p1 == '\n' && p1[1] == '\n')) p1++;
896 /* Specs end at the blank line and do not include the newline. */
897 spec = save_string (p, p1 - p);
900 /* Delete backslash-newline sequences from the spec. */
905 if (in[0] == '\\' && in[1] == '\n')
907 else if (in[0] == '#')
909 while (*in && *in != '\n') in++;
916 if (suffix[0] == '*')
918 if (! strcmp (suffix, "*link_command"))
919 link_command_spec = spec;
921 set_spec (suffix + 1, spec);
925 /* Add this pair to the vector. */
927 = ((struct compiler *)
928 xrealloc (compilers, (n_compilers + 2) * sizeof (struct compiler)));
929 compilers[n_compilers].suffix = suffix;
930 bzero (compilers[n_compilers].spec,
931 sizeof compilers[n_compilers].spec);
932 compilers[n_compilers].spec[0] = spec;
937 link_command_spec = spec;
940 if (link_command_spec == 0)
941 fatal ("spec file has no spec for linking");
950 /* A fully-blank line is a delimiter in the SPEC file and shouldn't
951 be considered whitespace. */
952 if (p[0] == '\n' && p[1] == '\n' && p[2] == '\n')
954 else if (*p == '\n' || *p == ' ' || *p == '\t')
958 while (*p != '\n') p++;
968 /* Structure to keep track of the specs that have been defined so far. These
969 are accessed using %(specname) or %[specname] in a compiler or link spec. */
973 char *name; /* Name of the spec. */
974 char *spec; /* The spec itself. */
975 struct spec_list *next; /* Next spec in linked list. */
978 /* List of specs that have been defined so far. */
980 static struct spec_list *specs = (struct spec_list *) 0;
982 /* Change the value of spec NAME to SPEC. If SPEC is empty, then the spec is
983 removed; If the spec starts with a + then SPEC is added to the end of the
987 set_spec (name, spec)
991 struct spec_list *sl;
994 /* See if the spec already exists */
995 for (sl = specs; sl; sl = sl->next)
996 if (strcmp (sl->name, name) == 0)
1001 /* Not found - make it */
1002 sl = (struct spec_list *) xmalloc (sizeof (struct spec_list));
1003 sl->name = save_string (name, strlen (name));
1004 sl->spec = save_string ("", 0);
1009 old_spec = sl->spec;
1010 if (name && spec[0] == '+' && isspace (spec[1]))
1011 sl->spec = concat (old_spec, spec + 1, "");
1013 sl->spec = save_string (spec, strlen (spec));
1015 if (! strcmp (name, "asm"))
1016 asm_spec = sl->spec;
1017 else if (! strcmp (name, "asm_final"))
1018 asm_final_spec = sl->spec;
1019 else if (! strcmp (name, "cc1"))
1020 cc1_spec = sl->spec;
1021 else if (! strcmp (name, "cc1plus"))
1022 cc1plus_spec = sl->spec;
1023 else if (! strcmp (name, "cpp"))
1024 cpp_spec = sl->spec;
1025 else if (! strcmp (name, "endfile"))
1026 endfile_spec = sl->spec;
1027 else if (! strcmp (name, "lib"))
1028 lib_spec = sl->spec;
1029 else if (! strcmp (name, "link"))
1030 link_spec = sl->spec;
1031 else if (! strcmp (name, "predefines"))
1032 cpp_predefines = sl->spec;
1033 else if (! strcmp (name, "signed_char"))
1034 signed_char_spec = sl->spec;
1035 else if (! strcmp (name, "startfile"))
1036 startfile_spec = sl->spec;
1037 else if (! strcmp (name, "switches_need_spaces"))
1038 switches_need_spaces = sl->spec;
1039 else if (! strcmp (name, "cross_compile"))
1040 cross_compile = atoi (sl->spec);
1041 /* Free the old spec */
1046 /* Accumulate a command (program name and args), and run it. */
1048 /* Vector of pointers to arguments in the current line of specifications. */
1050 static char **argbuf;
1052 /* Number of elements allocated in argbuf. */
1054 static int argbuf_length;
1056 /* Number of elements in argbuf currently in use (containing args). */
1058 static int argbuf_index;
1060 /* This is the list of suffixes and codes (%g/%u/%U) and the associated
1061 temp file. Used only if MKTEMP_EACH_FILE. */
1063 static struct temp_name {
1064 char *suffix; /* suffix associated with the code. */
1065 int length; /* strlen (suffix). */
1066 int unique; /* Indicates whether %g or %u/%U was used. */
1067 char *filename; /* associated filename. */
1068 int filename_length; /* strlen (filename). */
1069 struct temp_name *next;
1072 /* Number of commands executed so far. */
1074 static int execution_count;
1076 /* Number of commands that exited with a signal. */
1078 static int signal_count;
1080 /* Name with which this program was invoked. */
1082 static char *programname;
1084 /* Structures to keep track of prefixes to try when looking for files. */
1088 char *prefix; /* String to prepend to the path. */
1089 struct prefix_list *next; /* Next in linked list. */
1090 int require_machine_suffix; /* Don't use without machine_suffix. */
1091 /* 2 means try both machine_suffix and just_machine_suffix. */
1092 int *used_flag_ptr; /* 1 if a file was found with this prefix. */
1097 struct prefix_list *plist; /* List of prefixes to try */
1098 int max_len; /* Max length of a prefix in PLIST */
1099 char *name; /* Name of this list (used in config stuff) */
1102 /* List of prefixes to try when looking for executables. */
1104 static struct path_prefix exec_prefix = { 0, 0, "exec" };
1106 /* List of prefixes to try when looking for startup (crt0) files. */
1108 static struct path_prefix startfile_prefix = { 0, 0, "startfile" };
1110 /* Suffix to attach to directories searched for commands.
1111 This looks like `MACHINE/VERSION/'. */
1113 static char *machine_suffix = 0;
1115 /* Suffix to attach to directories searched for commands.
1116 This is just `MACHINE/'. */
1118 static char *just_machine_suffix = 0;
1120 /* Adjusted value of GCC_EXEC_PREFIX envvar. */
1122 static char *gcc_exec_prefix;
1124 /* Default prefixes to attach to command names. */
1126 #ifdef CROSS_COMPILE /* Don't use these prefixes for a cross compiler. */
1127 #undef MD_EXEC_PREFIX
1128 #undef MD_STARTFILE_PREFIX
1129 #undef MD_STARTFILE_PREFIX_1
1132 #ifndef STANDARD_EXEC_PREFIX
1133 #define STANDARD_EXEC_PREFIX "/usr/local/lib/gcc-lib/"
1134 #endif /* !defined STANDARD_EXEC_PREFIX */
1136 static char *standard_exec_prefix = STANDARD_EXEC_PREFIX;
1137 static char *standard_exec_prefix_1 = "/usr/lib/gcc/";
1138 #ifdef MD_EXEC_PREFIX
1139 static char *md_exec_prefix = MD_EXEC_PREFIX;
1142 #ifndef STANDARD_STARTFILE_PREFIX
1143 #define STANDARD_STARTFILE_PREFIX "/usr/local/lib/"
1144 #endif /* !defined STANDARD_STARTFILE_PREFIX */
1146 #ifdef MD_STARTFILE_PREFIX
1147 static char *md_startfile_prefix = MD_STARTFILE_PREFIX;
1149 #ifdef MD_STARTFILE_PREFIX_1
1150 static char *md_startfile_prefix_1 = MD_STARTFILE_PREFIX_1;
1152 static char *standard_startfile_prefix = STANDARD_STARTFILE_PREFIX;
1153 static char *standard_startfile_prefix_1 = "/lib/";
1154 static char *standard_startfile_prefix_2 = "/usr/lib/";
1156 #ifndef TOOLDIR_BASE_PREFIX
1157 #define TOOLDIR_BASE_PREFIX "/usr/local/"
1159 static char *tooldir_base_prefix = TOOLDIR_BASE_PREFIX;
1160 static char *tooldir_prefix;
1162 /* Clear out the vector of arguments (after a command is executed). */
1170 /* Add one argument to the vector at the end.
1171 This is done when a space is seen or at the end of the line.
1172 If DELETE_ALWAYS is nonzero, the arg is a filename
1173 and the file should be deleted eventually.
1174 If DELETE_FAILURE is nonzero, the arg is a filename
1175 and the file should be deleted if this compilation fails. */
1178 store_arg (arg, delete_always, delete_failure)
1180 int delete_always, delete_failure;
1182 if (argbuf_index + 1 == argbuf_length)
1184 argbuf = (char **) xrealloc (argbuf, (argbuf_length *= 2) * sizeof (char *));
1187 argbuf[argbuf_index++] = arg;
1188 argbuf[argbuf_index] = 0;
1190 if (delete_always || delete_failure)
1191 record_temp_file (arg, delete_always, delete_failure);
1194 /* Record the names of temporary files we tell compilers to write,
1195 and delete them at the end of the run. */
1197 /* This is the common prefix we use to make temp file names.
1198 It is chosen once for each run of this program.
1199 It is substituted into a spec by %g.
1200 Thus, all temp file names contain this prefix.
1201 In practice, all temp file names start with this prefix.
1203 This prefix comes from the envvar TMPDIR if it is defined;
1204 otherwise, from the P_tmpdir macro if that is defined;
1205 otherwise, in /usr/tmp or /tmp. */
1207 static char *temp_filename;
1209 /* Length of the prefix. */
1211 static int temp_filename_length;
1213 /* Define the list of temporary files to delete. */
1218 struct temp_file *next;
1221 /* Queue of files to delete on success or failure of compilation. */
1222 static struct temp_file *always_delete_queue;
1223 /* Queue of files to delete on failure of compilation. */
1224 static struct temp_file *failure_delete_queue;
1226 /* Record FILENAME as a file to be deleted automatically.
1227 ALWAYS_DELETE nonzero means delete it if all compilation succeeds;
1228 otherwise delete it in any case.
1229 FAIL_DELETE nonzero means delete it if a compilation step fails;
1230 otherwise delete it in any case. */
1233 record_temp_file (filename, always_delete, fail_delete)
1238 register char *name;
1239 name = xmalloc (strlen (filename) + 1);
1240 strcpy (name, filename);
1244 register struct temp_file *temp;
1245 for (temp = always_delete_queue; temp; temp = temp->next)
1246 if (! strcmp (name, temp->name))
1248 temp = (struct temp_file *) xmalloc (sizeof (struct temp_file));
1249 temp->next = always_delete_queue;
1251 always_delete_queue = temp;
1257 register struct temp_file *temp;
1258 for (temp = failure_delete_queue; temp; temp = temp->next)
1259 if (! strcmp (name, temp->name))
1261 temp = (struct temp_file *) xmalloc (sizeof (struct temp_file));
1262 temp->next = failure_delete_queue;
1264 failure_delete_queue = temp;
1269 /* Delete all the temporary files whose names we previously recorded. */
1272 delete_temp_files ()
1274 register struct temp_file *temp;
1276 for (temp = always_delete_queue; temp; temp = temp->next)
1280 printf ("Delete %s? (y or n) ", temp->name);
1284 while (getchar () != '\n') ;
1285 if (i == 'y' || i == 'Y')
1289 if (stat (temp->name, &st) >= 0)
1291 /* Delete only ordinary files. */
1292 if (S_ISREG (st.st_mode))
1293 if (unlink (temp->name) < 0)
1295 perror_with_name (temp->name);
1300 always_delete_queue = 0;
1303 /* Delete all the files to be deleted on error. */
1306 delete_failure_queue ()
1308 register struct temp_file *temp;
1310 for (temp = failure_delete_queue; temp; temp = temp->next)
1314 printf ("Delete %s? (y or n) ", temp->name);
1318 while (getchar () != '\n') ;
1319 if (i == 'y' || i == 'Y')
1322 if (unlink (temp->name) < 0)
1324 perror_with_name (temp->name);
1330 clear_failure_queue ()
1332 failure_delete_queue = 0;
1335 /* Compute a string to use as the base of all temporary file names.
1336 It is substituted for %g. */
1341 char *base = getenv ("TMPDIR");
1344 if (base == (char *)0)
1347 if (access (P_tmpdir, R_OK | W_OK) == 0)
1350 if (base == (char *)0)
1352 if (access ("/usr/tmp", R_OK | W_OK) == 0)
1359 len = strlen (base);
1360 temp_filename = xmalloc (len + sizeof("/ccXXXXXX"));
1361 strcpy (temp_filename, base);
1362 if (len > 0 && temp_filename[len-1] != '/')
1363 temp_filename[len++] = '/';
1364 strcpy (temp_filename + len, "ccXXXXXX");
1366 mktemp (temp_filename);
1367 temp_filename_length = strlen (temp_filename);
1368 if (temp_filename_length == 0)
1373 /* Routine to add variables to the environment. We do this to pass
1374 the pathname of the gcc driver, and the directories search to the
1375 collect2 program, which is being run as ld. This way, we can be
1376 sure of executing the right compiler when collect2 wants to build
1377 constructors and destructors. Since the environment variables we
1378 use come from an obstack, we don't have to worry about allocating
1387 #ifndef VMS /* nor about VMS */
1389 extern char **environ;
1390 char **old_environ = environ;
1394 int str_len = strlen (str);
1398 while ((ch = *p++) != '\0' && ch != '=')
1404 /* Search for replacing an existing environment variable, and
1405 count the number of total environment variables. */
1406 for (envp = old_environ; *envp; envp++)
1409 if (!strncmp (str, *envp, name_len))
1416 /* Add a new environment variable */
1417 environ = (char **) xmalloc (sizeof (char *) * (num_envs+2));
1419 bcopy (old_environ, environ+1, sizeof (char *) * (num_envs+1));
1424 #endif /* HAVE_PUTENV */
1427 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables for collect. */
1430 putenv_from_prefixes (paths, env_var)
1431 struct path_prefix *paths;
1434 int suffix_len = (machine_suffix) ? strlen (machine_suffix) : 0;
1436 = (just_machine_suffix) ? strlen (just_machine_suffix) : 0;
1437 int first_time = TRUE;
1438 struct prefix_list *pprefix;
1440 obstack_grow (&collect_obstack, env_var, strlen (env_var));
1442 for (pprefix = paths->plist; pprefix != 0; pprefix = pprefix->next)
1444 int len = strlen (pprefix->prefix);
1447 && is_directory (pprefix->prefix, machine_suffix, 0))
1450 obstack_1grow (&collect_obstack, PATH_SEPARATOR);
1453 obstack_grow (&collect_obstack, pprefix->prefix, len);
1454 obstack_grow (&collect_obstack, machine_suffix, suffix_len);
1457 if (just_machine_suffix
1458 && pprefix->require_machine_suffix == 2
1459 && is_directory (pprefix->prefix, just_machine_suffix, 0))
1462 obstack_1grow (&collect_obstack, PATH_SEPARATOR);
1465 obstack_grow (&collect_obstack, pprefix->prefix, len);
1466 obstack_grow (&collect_obstack, just_machine_suffix,
1470 if (!pprefix->require_machine_suffix)
1473 obstack_1grow (&collect_obstack, PATH_SEPARATOR);
1476 obstack_grow (&collect_obstack, pprefix->prefix, len);
1479 obstack_1grow (&collect_obstack, '\0');
1480 putenv (obstack_finish (&collect_obstack));
1484 /* Search for NAME using the prefix list PREFIXES. MODE is passed to
1485 access to check permissions.
1486 Return 0 if not found, otherwise return its name, allocated with malloc. */
1489 find_a_file (pprefix, name, mode)
1490 struct path_prefix *pprefix;
1495 char *file_suffix = ((mode & X_OK) != 0 ? EXECUTABLE_SUFFIX : "");
1496 struct prefix_list *pl;
1497 int len = pprefix->max_len + strlen (name) + strlen (file_suffix) + 1;
1500 len += strlen (machine_suffix);
1502 temp = xmalloc (len);
1504 /* Determine the filename to execute (special case for absolute paths). */
1508 if (access (name, mode))
1510 strcpy (temp, name);
1515 for (pl = pprefix->plist; pl; pl = pl->next)
1519 strcpy (temp, pl->prefix);
1520 strcat (temp, machine_suffix);
1521 strcat (temp, name);
1522 if (access (temp, mode) == 0)
1524 if (pl->used_flag_ptr != 0)
1525 *pl->used_flag_ptr = 1;
1528 /* Some systems have a suffix for executable files.
1529 So try appending that. */
1530 if (file_suffix[0] != 0)
1532 strcat (temp, file_suffix);
1533 if (access (temp, mode) == 0)
1535 if (pl->used_flag_ptr != 0)
1536 *pl->used_flag_ptr = 1;
1541 /* Certain prefixes are tried with just the machine type,
1542 not the version. This is used for finding as, ld, etc. */
1543 if (just_machine_suffix && pl->require_machine_suffix == 2)
1545 strcpy (temp, pl->prefix);
1546 strcat (temp, just_machine_suffix);
1547 strcat (temp, name);
1548 if (access (temp, mode) == 0)
1550 if (pl->used_flag_ptr != 0)
1551 *pl->used_flag_ptr = 1;
1554 /* Some systems have a suffix for executable files.
1555 So try appending that. */
1556 if (file_suffix[0] != 0)
1558 strcat (temp, file_suffix);
1559 if (access (temp, mode) == 0)
1561 if (pl->used_flag_ptr != 0)
1562 *pl->used_flag_ptr = 1;
1567 /* Certain prefixes can't be used without the machine suffix
1568 when the machine or version is explicitly specified. */
1569 if (!pl->require_machine_suffix)
1571 strcpy (temp, pl->prefix);
1572 strcat (temp, name);
1573 if (access (temp, mode) == 0)
1575 if (pl->used_flag_ptr != 0)
1576 *pl->used_flag_ptr = 1;
1579 /* Some systems have a suffix for executable files.
1580 So try appending that. */
1581 if (file_suffix[0] != 0)
1583 strcat (temp, file_suffix);
1584 if (access (temp, mode) == 0)
1586 if (pl->used_flag_ptr != 0)
1587 *pl->used_flag_ptr = 1;
1598 /* Add an entry for PREFIX in PLIST. If FIRST is set, it goes
1599 at the start of the list, otherwise it goes at the end.
1601 If WARN is nonzero, we will warn if no file is found
1602 through this prefix. WARN should point to an int
1603 which will be set to 1 if this entry is used.
1605 REQUIRE_MACHINE_SUFFIX is 1 if this prefix can't be used without
1606 the complete value of machine_suffix.
1607 2 means try both machine_suffix and just_machine_suffix. */
1610 add_prefix (pprefix, prefix, first, require_machine_suffix, warn)
1611 struct path_prefix *pprefix;
1614 int require_machine_suffix;
1617 struct prefix_list *pl, **prev;
1620 if (!first && pprefix->plist)
1622 for (pl = pprefix->plist; pl->next; pl = pl->next)
1627 prev = &pprefix->plist;
1629 /* Keep track of the longest prefix */
1631 len = strlen (prefix);
1632 if (len > pprefix->max_len)
1633 pprefix->max_len = len;
1635 pl = (struct prefix_list *) xmalloc (sizeof (struct prefix_list));
1636 pl->prefix = save_string (prefix, len);
1637 pl->require_machine_suffix = require_machine_suffix;
1638 pl->used_flag_ptr = warn;
1645 pl->next = (struct prefix_list *) 0;
1649 /* Print warnings for any prefixes in the list PPREFIX that were not used. */
1652 unused_prefix_warnings (pprefix)
1653 struct path_prefix *pprefix;
1655 struct prefix_list *pl = pprefix->plist;
1659 if (pl->used_flag_ptr != 0 && !*pl->used_flag_ptr)
1661 error ("file path prefix `%s' never used",
1663 /* Prevent duplicate warnings. */
1664 *pl->used_flag_ptr = 1;
1670 /* Get rid of all prefixes built up so far in *PLISTP. */
1673 free_path_prefix (pprefix)
1674 struct path_prefix *pprefix;
1676 struct prefix_list *pl = pprefix->plist;
1677 struct prefix_list *temp;
1683 free (temp->prefix);
1684 free ((char *) temp);
1686 pprefix->plist = (struct prefix_list *) 0;
1689 /* stdin file number. */
1690 #define STDIN_FILE_NO 0
1692 /* stdout file number. */
1693 #define STDOUT_FILE_NO 1
1695 /* value of `pipe': port index for reading. */
1698 /* value of `pipe': port index for writing. */
1699 #define WRITE_PORT 1
1701 /* Pipe waiting from last process, to be used as input for the next one.
1702 Value is STDIN_FILE_NO if no pipe is waiting
1703 (i.e. the next command is the first of a group). */
1705 static int last_pipe_input;
1707 /* Fork one piped subcommand. FUNC is the system call to use
1708 (either execv or execvp). ARGV is the arg vector to use.
1709 NOT_LAST is nonzero if this is not the last subcommand
1710 (i.e. its output should be piped to the next one.) */
1715 /* Declare these to avoid compilation error. They won't be called. */
1716 int execv(const char *a, const char **b){}
1717 int execvp(const char *a, const char **b){}
1720 pexecute (search_flag, program, argv, not_last)
1730 scmd = (char *)malloc (strlen (program) + strlen (temp_filename) + 6);
1731 sprintf (scmd, "%s @%s.gp", program, temp_filename);
1732 argfile = fopen (scmd+strlen (program) + 2, "w");
1734 pfatal_with_name (scmd + strlen (program) + 2);
1736 for (i=1; argv[i]; i++)
1739 for (cp = argv[i]; *cp; cp++)
1741 if (*cp == '"' || *cp == '\'' || *cp == '\\' || isspace (*cp))
1742 fputc ('\\', argfile);
1743 fputc (*cp, argfile);
1745 fputc ('\n', argfile);
1751 remove (scmd + strlen (program) + 2);
1755 #else /* not __MSDOS__ */
1758 pexecute (search_flag, program, argv, not_last)
1764 int (*func)() = (search_flag ? execv : execvp);
1767 int input_desc = last_pipe_input;
1768 int output_desc = STDOUT_FILE_NO;
1769 int retries, sleep_interval;
1771 /* If this isn't the last process, make a pipe for its output,
1772 and record it as waiting to be the input to the next process. */
1776 if (pipe (pdes) < 0)
1777 pfatal_with_name ("pipe");
1778 output_desc = pdes[WRITE_PORT];
1779 last_pipe_input = pdes[READ_PORT];
1782 last_pipe_input = STDIN_FILE_NO;
1784 /* Fork a subprocess; wait and retry if it fails. */
1786 for (retries = 0; retries < 4; retries++)
1791 sleep (sleep_interval);
1792 sleep_interval *= 2;
1799 pfatal_with_name ("fork");
1801 pfatal_with_name ("vfork");
1807 /* Move the input and output pipes into place, if nec. */
1808 if (input_desc != STDIN_FILE_NO)
1810 close (STDIN_FILE_NO);
1814 if (output_desc != STDOUT_FILE_NO)
1816 close (STDOUT_FILE_NO);
1818 close (output_desc);
1821 /* Close the parent's descs that aren't wanted here. */
1822 if (last_pipe_input != STDIN_FILE_NO)
1823 close (last_pipe_input);
1825 /* Exec the program. */
1826 (*func) (program, argv);
1827 perror_exec (program);
1833 /* In the parent, after forking.
1834 Close the descriptors that we made for this child. */
1835 if (input_desc != STDIN_FILE_NO)
1837 if (output_desc != STDOUT_FILE_NO)
1838 close (output_desc);
1840 /* Return child's process number. */
1845 #endif /* not __MSDOS__ */
1849 pexecute (search_flag, program, argv, not_last)
1855 return (search_flag ? spawnv : spawnvp) (1, program, argv);
1857 #endif /* not OS2 */
1859 /* Execute the command specified by the arguments on the current line of spec.
1860 When using pipes, this includes several piped-together commands
1861 with `|' between them.
1863 Return 0 if successful, -1 if failed. */
1869 int n_commands; /* # of command. */
1873 char *prog; /* program name. */
1874 char **argv; /* vector of args. */
1875 int pid; /* pid of process for this command. */
1878 struct command *commands; /* each command buffer with above info. */
1880 /* Count # of piped commands. */
1881 for (n_commands = 1, i = 0; i < argbuf_index; i++)
1882 if (strcmp (argbuf[i], "|") == 0)
1885 /* Get storage for each command. */
1887 = (struct command *) alloca (n_commands * sizeof (struct command));
1889 /* Split argbuf into its separate piped processes,
1890 and record info about each one.
1891 Also search for the programs that are to be run. */
1893 commands[0].prog = argbuf[0]; /* first command. */
1894 commands[0].argv = &argbuf[0];
1895 string = find_a_file (&exec_prefix, commands[0].prog, X_OK);
1897 commands[0].argv[0] = string;
1899 for (n_commands = 1, i = 0; i < argbuf_index; i++)
1900 if (strcmp (argbuf[i], "|") == 0)
1901 { /* each command. */
1903 fatal ("-pipe not supported under MS-DOS");
1905 argbuf[i] = 0; /* termination of command args. */
1906 commands[n_commands].prog = argbuf[i + 1];
1907 commands[n_commands].argv = &argbuf[i + 1];
1908 string = find_a_file (&exec_prefix, commands[n_commands].prog, X_OK);
1910 commands[n_commands].argv[0] = string;
1914 argbuf[argbuf_index] = 0;
1916 /* If -v, print what we are about to do, and maybe query. */
1920 /* Print each piped command as a separate line. */
1921 for (i = 0; i < n_commands ; i++)
1925 for (j = commands[i].argv; *j; j++)
1926 fprintf (stderr, " %s", *j);
1928 /* Print a pipe symbol after all but the last command. */
1929 if (i + 1 != n_commands)
1930 fprintf (stderr, " |");
1931 fprintf (stderr, "\n");
1935 fprintf (stderr, "\nGo ahead? (y or n) ");
1939 while (getchar () != '\n') ;
1940 if (i != 'y' && i != 'Y')
1945 /* Run each piped subprocess. */
1947 last_pipe_input = STDIN_FILE_NO;
1948 for (i = 0; i < n_commands; i++)
1950 char *string = commands[i].argv[0];
1952 commands[i].pid = pexecute (string != commands[i].prog,
1953 string, commands[i].argv,
1954 i + 1 < n_commands);
1956 if (string != commands[i].prog)
1962 /* Wait for all the subprocesses to finish.
1963 We don't care what order they finish in;
1964 we know that N_COMMANDS waits will get them all. */
1969 for (i = 0; i < n_commands; i++)
1976 status = pid = commands[i].pid;
1978 pid = wait (&status);
1986 for (j = 0; j < n_commands; j++)
1987 if (commands[j].pid == pid)
1988 prog = commands[j].prog;
1990 if ((status & 0x7F) != 0)
1992 fatal ("Internal compiler error: program %s got fatal signal %d",
1993 prog, (status & 0x7F));
1996 if (((status & 0xFF00) >> 8) >= MIN_FATAL_STATUS)
2004 /* Find all the switches given to us
2005 and make a vector describing them.
2006 The elements of the vector are strings, one per switch given.
2007 If a switch uses following arguments, then the `part1' field
2008 is the switch itself and the `args' field
2009 is a null-terminated vector containing the following arguments.
2010 The `valid' field is nonzero if any spec has looked at this switch;
2011 if it remains zero at the end of the run, it must be meaningless. */
2020 static struct switchstr *switches;
2022 static int n_switches;
2030 /* Also a vector of input files specified. */
2032 static struct infile *infiles;
2034 static int n_infiles;
2036 /* And a vector of corresponding output files is made up later. */
2038 static char **outfiles;
2040 /* Create the vector `switches' and its contents.
2041 Store its length in `n_switches'. */
2044 process_command (argc, argv)
2050 char *spec_lang = 0;
2051 int last_language_n_infiles;
2053 gcc_exec_prefix = getenv ("GCC_EXEC_PREFIX");
2058 /* Default for -V is our version number, ending at first space. */
2059 spec_version = save_string (version_string, strlen (version_string));
2060 for (temp = spec_version; *temp && *temp != ' '; temp++);
2061 if (*temp) *temp = '\0';
2063 /* Set up the default search paths. */
2065 if (gcc_exec_prefix)
2067 add_prefix (&exec_prefix, gcc_exec_prefix, 0, 0, NULL_PTR);
2068 add_prefix (&startfile_prefix, gcc_exec_prefix, 0, 0, NULL_PTR);
2071 /* COMPILER_PATH and LIBRARY_PATH have values
2072 that are lists of directory names with colons. */
2074 temp = getenv ("COMPILER_PATH");
2077 char *startp, *endp;
2078 char *nstore = (char *) alloca (strlen (temp) + 3);
2080 startp = endp = temp;
2083 if (*endp == PATH_SEPARATOR || *endp == 0)
2085 strncpy (nstore, startp, endp-startp);
2088 strcpy (nstore, "./");
2090 else if (endp[-1] != '/')
2092 nstore[endp-startp] = '/';
2093 nstore[endp-startp+1] = 0;
2096 nstore[endp-startp] = 0;
2097 add_prefix (&exec_prefix, nstore, 0, 0, NULL_PTR);
2100 endp = startp = endp + 1;
2107 temp = getenv ("LIBRARY_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 (&startfile_prefix, nstore, 0, 0, NULL_PTR);
2133 endp = startp = endp + 1;
2140 /* Use LPATH like LIBRARY_PATH (for the CMU build program). */
2141 temp = getenv ("LPATH");
2144 char *startp, *endp;
2145 char *nstore = (char *) alloca (strlen (temp) + 3);
2147 startp = endp = temp;
2150 if (*endp == PATH_SEPARATOR || *endp == 0)
2152 strncpy (nstore, startp, endp-startp);
2155 strcpy (nstore, "./");
2157 else if (endp[-1] != '/')
2159 nstore[endp-startp] = '/';
2160 nstore[endp-startp+1] = 0;
2163 nstore[endp-startp] = 0;
2164 add_prefix (&startfile_prefix, nstore, 0, 0, NULL_PTR);
2167 endp = startp = endp + 1;
2174 /* Convert new-style -- options to old-style. */
2175 translate_options (&argc, &argv);
2177 /* Scan argv twice. Here, the first time, just count how many switches
2178 there will be in their vector, and how many input files in theirs.
2179 Here we also parse the switches that cc itself uses (e.g. -v). */
2181 for (i = 1; i < argc; i++)
2183 if (! strcmp (argv[i], "-dumpspecs"))
2185 printf ("*asm:\n%s\n\n", asm_spec);
2186 printf ("*asm_final:\n%s\n\n", asm_final_spec);
2187 printf ("*cpp:\n%s\n\n", cpp_spec);
2188 printf ("*cc1:\n%s\n\n", cc1_spec);
2189 printf ("*cc1plus:\n%s\n\n", cc1plus_spec);
2190 printf ("*endfile:\n%s\n\n", endfile_spec);
2191 printf ("*link:\n%s\n\n", link_spec);
2192 printf ("*lib:\n%s\n\n", lib_spec);
2193 printf ("*startfile:\n%s\n\n", startfile_spec);
2194 printf ("*switches_need_spaces:\n%s\n\n", switches_need_spaces);
2195 printf ("*signed_char:\n%s\n\n", signed_char_spec);
2196 printf ("*predefines:\n%s\n\n", cpp_predefines);
2197 printf ("*cross_compile:\n%d\n\n", cross_compile);
2201 else if (! strcmp (argv[i], "-dumpversion"))
2203 printf ("%s\n", version_string);
2206 else if (! strcmp (argv[i], "-print-libgcc-file-name"))
2208 print_libgcc_file_name = 1;
2210 else if (! strcmp (argv[i], "-Xlinker"))
2212 /* Pass the argument of this option to the linker when we link. */
2215 fatal ("argument to `-Xlinker' is missing");
2218 if (!linker_options)
2220 = (char **) xmalloc (n_linker_options * sizeof (char **));
2223 = (char **) xrealloc (linker_options,
2224 n_linker_options * sizeof (char **));
2226 linker_options[n_linker_options - 1] = argv[++i];
2228 else if (! strncmp (argv[i], "-Wl,", 4))
2231 /* Pass the rest of this option to the linker when we link. */
2234 if (!linker_options)
2236 = (char **) xmalloc (n_linker_options * sizeof (char **));
2239 = (char **) xrealloc (linker_options,
2240 n_linker_options * sizeof (char **));
2242 /* Split the argument at commas. */
2244 for (j = 4; argv[i][j]; j++)
2245 if (argv[i][j] == ',')
2247 linker_options[n_linker_options - 1]
2248 = save_string (argv[i] + prev, j - prev);
2251 = (char **) xrealloc (linker_options,
2252 n_linker_options * sizeof (char **));
2255 /* Record the part after the last comma. */
2256 linker_options[n_linker_options - 1] = argv[i] + prev;
2258 else if (! strncmp (argv[i], "-Wa,", 4))
2261 /* Pass the rest of this option to the assembler. */
2263 n_assembler_options++;
2264 if (!assembler_options)
2266 = (char **) xmalloc (n_assembler_options * sizeof (char **));
2269 = (char **) xrealloc (assembler_options,
2270 n_assembler_options * sizeof (char **));
2272 /* Split the argument at commas. */
2274 for (j = 4; argv[i][j]; j++)
2275 if (argv[i][j] == ',')
2277 assembler_options[n_assembler_options - 1]
2278 = save_string (argv[i] + prev, j - prev);
2279 n_assembler_options++;
2281 = (char **) xrealloc (assembler_options,
2282 n_assembler_options * sizeof (char **));
2285 /* Record the part after the last comma. */
2286 assembler_options[n_assembler_options - 1] = argv[i] + prev;
2288 else if (argv[i][0] == '+' && argv[i][1] == 'e')
2289 /* The +e options to the C++ front-end. */
2291 else if (argv[i][0] == '-' && argv[i][1] != 0 && argv[i][1] != 'l')
2293 register char *p = &argv[i][1];
2294 register int c = *p;
2299 if (p[1] == 0 && i + 1 == argc)
2300 fatal ("argument to `-b' is missing");
2302 spec_machine = argv[++i];
2304 spec_machine = p + 1;
2309 int *temp = (int *) xmalloc (sizeof (int));
2311 if (p[1] == 0 && i + 1 == argc)
2312 fatal ("argument to `-B' is missing");
2317 add_prefix (&exec_prefix, value, 1, 0, temp);
2318 add_prefix (&startfile_prefix, value, 1, 0, temp);
2322 case 'v': /* Print our subcommands and print versions. */
2324 /* If they do anything other than exactly `-v', don't set
2325 verbose_flag; rather, continue on to give the error. */
2332 if (p[1] == 0 && i + 1 == argc)
2333 fatal ("argument to `-V' is missing");
2335 spec_version = argv[++i];
2337 spec_version = p + 1;
2341 if (!strcmp (p, "save-temps"))
2343 save_temps_flag = 1;
2350 if (SWITCH_TAKES_ARG (c) > (p[1] != 0))
2351 i += SWITCH_TAKES_ARG (c) - (p[1] != 0);
2352 else if (WORD_SWITCH_TAKES_ARG (p))
2353 i += WORD_SWITCH_TAKES_ARG (p);
2360 /* Set up the search paths before we go looking for config files. */
2362 /* These come before the md prefixes so that we will find gcc's subcommands
2363 (such as cpp) rather than those of the host system. */
2364 /* Use 2 as fourth arg meaning try just the machine as a suffix,
2365 as well as trying the machine and the version. */
2366 add_prefix (&exec_prefix, standard_exec_prefix, 0, 2, NULL_PTR);
2367 add_prefix (&exec_prefix, standard_exec_prefix_1, 0, 2, NULL_PTR);
2369 add_prefix (&startfile_prefix, standard_exec_prefix, 0, 1, NULL_PTR);
2370 add_prefix (&startfile_prefix, standard_exec_prefix_1, 0, 1, NULL_PTR);
2372 tooldir_prefix = concat (tooldir_base_prefix, spec_machine, "/");
2374 /* If tooldir is relative, base it on exec_prefix. A relative
2375 tooldir lets us move the installed tree as a unit.
2377 If GCC_EXEC_PREFIX is defined, then we want to add two relative
2378 directories, so that we can search both the user specified directory
2379 and the standard place. */
2381 if (*tooldir_prefix != '/')
2383 if (gcc_exec_prefix)
2385 char *gcc_exec_tooldir_prefix
2386 = concat (concat (gcc_exec_prefix, spec_machine, "/"),
2387 concat (spec_version, "/", tooldir_prefix),
2390 add_prefix (&exec_prefix, concat (gcc_exec_tooldir_prefix, "bin", "/"),
2392 add_prefix (&startfile_prefix, concat (gcc_exec_tooldir_prefix, "lib", "/"),
2396 tooldir_prefix = concat (concat (standard_exec_prefix, spec_machine, "/"),
2397 concat (spec_version, "/", tooldir_prefix),
2401 add_prefix (&exec_prefix, concat (tooldir_prefix, "bin", "/"),
2403 add_prefix (&startfile_prefix, concat (tooldir_prefix, "lib", "/"),
2406 /* More prefixes are enabled in main, after we read the specs file
2407 and determine whether this is cross-compilation or not. */
2410 /* Then create the space for the vectors and scan again. */
2412 switches = ((struct switchstr *)
2413 xmalloc ((n_switches + 1) * sizeof (struct switchstr)));
2414 infiles = (struct infile *) xmalloc ((n_infiles + 1) * sizeof (struct infile));
2417 last_language_n_infiles = -1;
2419 /* This, time, copy the text of each switch and store a pointer
2420 to the copy in the vector of switches.
2421 Store all the infiles in their vector. */
2423 for (i = 1; i < argc; i++)
2425 /* Just skip the switches that were handled by the preceding loop. */
2426 if (!strcmp (argv[i], "-Xlinker"))
2428 else if (! strncmp (argv[i], "-Wl,", 4))
2430 else if (! strncmp (argv[i], "-Wa,", 4))
2432 else if (! strcmp (argv[i], "-print-libgcc-file-name"))
2434 else if (argv[i][0] == '+' && argv[i][1] == 'e')
2436 /* Compensate for the +e options to the C++ front-end;
2437 they're there simply for cfront call-compatibility. We do
2438 some magic in default_compilers to pass them down properly.
2439 Note we deliberately start at the `+' here, to avoid passing
2440 -e0 or -e1 down into the linker. */
2441 switches[n_switches].part1 = &argv[i][0];
2442 switches[n_switches].args = 0;
2443 switches[n_switches].valid = 0;
2446 else if (argv[i][0] == '-' && argv[i][1] != 0 && argv[i][1] != 'l')
2448 register char *p = &argv[i][1];
2449 register int c = *p;
2451 if (c == 'B' || c == 'b' || c == 'V')
2453 /* Skip a separate arg, if any. */
2460 if (p[1] == 0 && i + 1 == argc)
2461 fatal ("argument to `-x' is missing");
2463 spec_lang = argv[++i];
2466 if (! strcmp (spec_lang, "none"))
2467 /* Suppress the warning if -xnone comes after the last input file,
2468 because alternate command interfaces like g++ might find it
2469 useful to place -xnone after each input file. */
2472 last_language_n_infiles = n_infiles;
2475 switches[n_switches].part1 = p;
2476 /* Deal with option arguments in separate argv elements. */
2477 if ((SWITCH_TAKES_ARG (c) > (p[1] != 0))
2478 || WORD_SWITCH_TAKES_ARG (p)) {
2480 int n_args = WORD_SWITCH_TAKES_ARG (p);
2483 /* Count only the option arguments in separate argv elements. */
2484 n_args = SWITCH_TAKES_ARG (c) - (p[1] != 0);
2486 if (i + n_args >= argc)
2487 fatal ("argument to `-%s' is missing", p);
2488 switches[n_switches].args
2489 = (char **) xmalloc ((n_args + 1) * sizeof (char *));
2491 switches[n_switches].args[j++] = argv[++i];
2492 /* Null-terminate the vector. */
2493 switches[n_switches].args[j] = 0;
2494 } else if (*switches_need_spaces != 0 && (c == 'o' || c == 'L')) {
2495 /* On some systems, ld cannot handle -o or -L without space.
2496 So split the -o or -L from its argument. */
2497 switches[n_switches].part1 = (c == 'o' ? "o" : "L");
2498 switches[n_switches].args = (char **) xmalloc (2 * sizeof (char *));
2499 switches[n_switches].args[0] = xmalloc (strlen (p));
2500 strcpy (switches[n_switches].args[0], &p[1]);
2501 switches[n_switches].args[1] = 0;
2503 switches[n_switches].args = 0;
2504 switches[n_switches].valid = 0;
2505 /* This is always valid, since gcc.c itself understands it. */
2506 if (!strcmp (p, "save-temps"))
2507 switches[n_switches].valid = 1;
2512 if ((argv[i][0] != '-' || argv[i][1] != 'l')
2513 && access (argv[i], R_OK) < 0)
2515 perror_with_name (argv[i]);
2520 infiles[n_infiles].language = spec_lang;
2521 infiles[n_infiles++].name = argv[i];
2526 if (n_infiles == last_language_n_infiles)
2527 error ("Warning: `-x %s' after last input file has no effect", spec_lang);
2529 switches[n_switches].part1 = 0;
2530 infiles[n_infiles].name = 0;
2532 /* If we have a GCC_EXEC_PREFIX envvar, modify it for cpp's sake. */
2533 if (gcc_exec_prefix)
2535 temp = (char *) xmalloc (strlen (gcc_exec_prefix) + strlen (spec_version)
2536 + strlen (spec_machine) + 3);
2537 strcpy (temp, gcc_exec_prefix);
2538 strcat (temp, spec_machine);
2540 strcat (temp, spec_version);
2542 gcc_exec_prefix = temp;
2546 /* Process a spec string, accumulating and running commands. */
2548 /* These variables describe the input file name.
2549 input_file_number is the index on outfiles of this file,
2550 so that the output file name can be stored for later use by %o.
2551 input_basename is the start of the part of the input file
2552 sans all directory names, and basename_length is the number
2553 of characters starting there excluding the suffix .c or whatever. */
2555 static char *input_filename;
2556 static int input_file_number;
2557 static int input_filename_length;
2558 static int basename_length;
2559 static char *input_basename;
2560 static char *input_suffix;
2562 /* These are variables used within do_spec and do_spec_1. */
2564 /* Nonzero if an arg has been started and not yet terminated
2565 (with space, tab or newline). */
2566 static int arg_going;
2568 /* Nonzero means %d or %g has been seen; the next arg to be terminated
2569 is a temporary file name. */
2570 static int delete_this_arg;
2572 /* Nonzero means %w has been seen; the next arg to be terminated
2573 is the output file name of this compilation. */
2574 static int this_is_output_file;
2576 /* Nonzero means %s has been seen; the next arg to be terminated
2577 is the name of a library file and we should try the standard
2578 search dirs for it. */
2579 static int this_is_library_file;
2581 /* Nonzero means that the input of this command is coming from a pipe. */
2582 static int input_from_pipe;
2584 /* Process the spec SPEC and run the commands specified therein.
2585 Returns 0 if the spec is successfully processed; -1 if failed. */
2595 delete_this_arg = 0;
2596 this_is_output_file = 0;
2597 this_is_library_file = 0;
2598 input_from_pipe = 0;
2600 value = do_spec_1 (spec, 0, NULL_PTR);
2602 /* Force out any unfinished command.
2603 If -pipe, this forces out the last command if it ended in `|'. */
2606 if (argbuf_index > 0 && !strcmp (argbuf[argbuf_index - 1], "|"))
2609 if (argbuf_index > 0)
2616 /* Process the sub-spec SPEC as a portion of a larger spec.
2617 This is like processing a whole spec except that we do
2618 not initialize at the beginning and we do not supply a
2619 newline by default at the end.
2620 INSWITCH nonzero means don't process %-sequences in SPEC;
2621 in this case, % is treated as an ordinary character.
2622 This is used while substituting switches.
2623 INSWITCH nonzero also causes SPC not to terminate an argument.
2625 Value is zero unless a line was finished
2626 and the command on that line reported an error. */
2629 do_spec_1 (spec, inswitch, soft_matched_part)
2632 char *soft_matched_part;
2634 register char *p = spec;
2641 /* If substituting a switch, treat all chars like letters.
2642 Otherwise, NL, SPC, TAB and % are special. */
2643 switch (inswitch ? 'a' : c)
2646 /* End of line: finish any pending argument,
2647 then run the pending command if one has been started. */
2650 obstack_1grow (&obstack, 0);
2651 string = obstack_finish (&obstack);
2652 if (this_is_library_file)
2653 string = find_file (string);
2654 store_arg (string, delete_this_arg, this_is_output_file);
2655 if (this_is_output_file)
2656 outfiles[input_file_number] = string;
2660 if (argbuf_index > 0 && !strcmp (argbuf[argbuf_index - 1], "|"))
2663 for (i = 0; i < n_switches; i++)
2664 if (!strcmp (switches[i].part1, "pipe"))
2667 /* A `|' before the newline means use a pipe here,
2668 but only if -pipe was specified.
2669 Otherwise, execute now and don't pass the `|' as an arg. */
2672 input_from_pipe = 1;
2673 switches[i].valid = 1;
2680 if (argbuf_index > 0)
2686 /* Reinitialize for a new command, and for a new argument. */
2689 delete_this_arg = 0;
2690 this_is_output_file = 0;
2691 this_is_library_file = 0;
2692 input_from_pipe = 0;
2696 /* End any pending argument. */
2699 obstack_1grow (&obstack, 0);
2700 string = obstack_finish (&obstack);
2701 if (this_is_library_file)
2702 string = find_file (string);
2703 store_arg (string, delete_this_arg, this_is_output_file);
2704 if (this_is_output_file)
2705 outfiles[input_file_number] = string;
2709 obstack_1grow (&obstack, c);
2715 /* Space or tab ends an argument if one is pending. */
2718 obstack_1grow (&obstack, 0);
2719 string = obstack_finish (&obstack);
2720 if (this_is_library_file)
2721 string = find_file (string);
2722 store_arg (string, delete_this_arg, this_is_output_file);
2723 if (this_is_output_file)
2724 outfiles[input_file_number] = string;
2726 /* Reinitialize for a new argument. */
2728 delete_this_arg = 0;
2729 this_is_output_file = 0;
2730 this_is_library_file = 0;
2737 fatal ("Invalid specification! Bug in cc.");
2740 obstack_grow (&obstack, input_basename, basename_length);
2745 delete_this_arg = 2;
2748 /* Dump out the directories specified with LIBRARY_PATH,
2749 followed by the absolute directories
2750 that we search for startfiles. */
2753 struct prefix_list *pl = startfile_prefix.plist;
2755 char *buffer = (char *) xmalloc (bufsize);
2758 for (; pl; pl = pl->next)
2760 #ifdef RELATIVE_PREFIX_NOT_LINKDIR
2761 /* Used on systems which record the specified -L dirs
2762 and use them to search for dynamic linking. */
2763 /* Relative directories always come from -B,
2764 and it is better not to use them for searching
2765 at run time. In particular, stage1 loses */
2766 if (pl->prefix[0] != '/')
2771 if (is_directory (pl->prefix, machine_suffix, 1))
2773 do_spec_1 ("-L", 0, NULL_PTR);
2774 #ifdef SPACE_AFTER_L_OPTION
2775 do_spec_1 (" ", 0, NULL_PTR);
2777 do_spec_1 (pl->prefix, 1, NULL_PTR);
2778 /* Remove slash from machine_suffix. */
2779 if (strlen (machine_suffix) >= bufsize)
2780 bufsize = strlen (machine_suffix) * 2 + 1;
2781 buffer = (char *) xrealloc (buffer, bufsize);
2782 strcpy (buffer, machine_suffix);
2783 idx = strlen (buffer);
2784 if (buffer[idx - 1] == '/')
2785 buffer[idx - 1] = 0;
2786 do_spec_1 (buffer, 1, NULL_PTR);
2787 /* Make this a separate argument. */
2788 do_spec_1 (" ", 0, NULL_PTR);
2791 if (!pl->require_machine_suffix)
2793 if (is_directory (pl->prefix, "", 1))
2795 do_spec_1 ("-L", 0, NULL_PTR);
2796 #ifdef SPACE_AFTER_L_OPTION
2797 do_spec_1 (" ", 0, NULL_PTR);
2799 /* Remove slash from pl->prefix. */
2800 if (strlen (pl->prefix) >= bufsize)
2801 bufsize = strlen (pl->prefix) * 2 + 1;
2802 buffer = (char *) xrealloc (buffer, bufsize);
2803 strcpy (buffer, pl->prefix);
2804 idx = strlen (buffer);
2805 if (buffer[idx - 1] == '/')
2806 buffer[idx - 1] = 0;
2807 do_spec_1 (buffer, 1, NULL_PTR);
2808 /* Make this a separate argument. */
2809 do_spec_1 (" ", 0, NULL_PTR);
2818 /* {...:%efoo} means report an error with `foo' as error message
2819 and don't execute any more commands for this file. */
2823 while (*p != 0 && *p != '\n') p++;
2824 buf = (char *) alloca (p - q + 1);
2825 strncpy (buf, q, p - q);
2835 if (save_temps_flag)
2836 obstack_grow (&obstack, input_basename, basename_length);
2839 #ifdef MKTEMP_EACH_FILE
2840 /* ??? This has a problem: the total number of
2841 values mktemp can return is limited.
2842 That matters for the names of object files.
2843 In 2.4, do something about that. */
2844 struct temp_name *t;
2846 while (*p == '.' || isalpha (*p))
2849 /* See if we already have an association of %g/%u/%U and
2851 for (t = temp_names; t; t = t->next)
2852 if (t->length == p - suffix
2853 && strncmp (t->suffix, suffix, p - suffix) == 0
2854 && t->unique == (c != 'g'))
2857 /* Make a new association if needed. %u requires one. */
2858 if (t == 0 || c == 'u')
2862 t = (struct temp_name *) xmalloc (sizeof (struct temp_name));
2863 t->next = temp_names;
2866 t->length = p - suffix;
2867 t->suffix = save_string (suffix, p - suffix);
2868 t->unique = (c != 'g');
2869 choose_temp_base ();
2870 t->filename = temp_filename;
2871 t->filename_length = temp_filename_length;
2874 obstack_grow (&obstack, t->filename, t->filename_length);
2875 delete_this_arg = 1;
2877 obstack_grow (&obstack, temp_filename, temp_filename_length);
2878 if (c == 'u' || c == 'U')
2884 sprintf (buff, "%d", unique);
2885 obstack_grow (&obstack, buff, strlen (buff));
2888 delete_this_arg = 1;
2894 obstack_grow (&obstack, input_filename, input_filename_length);
2899 if (gcc_exec_prefix)
2901 do_spec_1 ("-iprefix", 1, NULL_PTR);
2902 /* Make this a separate argument. */
2903 do_spec_1 (" ", 0, NULL_PTR);
2904 do_spec_1 (gcc_exec_prefix, 1, NULL_PTR);
2905 do_spec_1 (" ", 0, NULL_PTR);
2912 for (f = 0; f < n_infiles; f++)
2913 store_arg (outfiles[f], 0, 0);
2918 this_is_library_file = 1;
2922 this_is_output_file = 1;
2927 int index = argbuf_index;
2928 /* Handle the {...} following the %W. */
2931 p = handle_braces (p + 1);
2934 /* If any args were output, mark the last one for deletion
2936 if (argbuf_index != index)
2937 record_temp_file (argbuf[argbuf_index - 1], 0, 1);
2941 /* %x{OPTION} records OPTION for %X to output. */
2947 /* Skip past the option value and make a copy. */
2952 string = save_string (p1 + 1, p - p1 - 2);
2954 /* See if we already recorded this option. */
2955 for (i = 0; i < n_linker_options; i++)
2956 if (! strcmp (string, linker_options[i]))
2962 /* This option is new; add it. */
2964 if (!linker_options)
2966 = (char **) xmalloc (n_linker_options * sizeof (char **));
2969 = (char **) xrealloc (linker_options,
2970 n_linker_options * sizeof (char **));
2972 linker_options[n_linker_options - 1] = string;
2976 /* Dump out the options accumulated previously using %x,
2977 -Xlinker and -Wl,. */
2979 for (i = 0; i < n_linker_options; i++)
2981 do_spec_1 (linker_options[i], 1, NULL_PTR);
2982 /* Make each accumulated option a separate argument. */
2983 do_spec_1 (" ", 0, NULL_PTR);
2987 /* Dump out the options accumulated previously using -Wa,. */
2989 for (i = 0; i < n_assembler_options; i++)
2991 do_spec_1 (assembler_options[i], 1, NULL_PTR);
2992 /* Make each accumulated option a separate argument. */
2993 do_spec_1 (" ", 0, NULL_PTR);
2997 /* Here are digits and numbers that just process
2998 a certain constant string as a spec. */
3001 value = do_spec_1 (cc1_spec, 0, NULL_PTR);
3007 value = do_spec_1 (cc1plus_spec, 0, NULL_PTR);
3013 value = do_spec_1 (asm_spec, 0, NULL_PTR);
3019 value = do_spec_1 (asm_final_spec, 0, NULL_PTR);
3025 value = do_spec_1 (signed_char_spec, 0, NULL_PTR);
3031 value = do_spec_1 (cpp_spec, 0, NULL_PTR);
3037 value = do_spec_1 (endfile_spec, 0, NULL_PTR);
3043 value = do_spec_1 (link_spec, 0, NULL_PTR);
3049 value = do_spec_1 (lib_spec, 0, NULL_PTR);
3056 char *x = (char *) alloca (strlen (cpp_predefines) + 1);
3060 /* Copy all of the -D options in CPP_PREDEFINES into BUF. */
3064 if (! strncmp (y, "-D", 2))
3065 /* Copy the whole option. */
3066 while (*y && *y != ' ' && *y != '\t')
3068 else if (*y == ' ' || *y == '\t')
3069 /* Copy whitespace to the result. */
3071 /* Don't copy other options. */
3078 value = do_spec_1 (buf, 0, NULL_PTR);
3086 char *x = (char *) alloca (strlen (cpp_predefines) * 4 + 1);
3090 /* Copy all of CPP_PREDEFINES into BUF,
3091 but put __ after every -D and at the end of each arg. */
3095 if (! strncmp (y, "-D", 2))
3102 if (strncmp (y, "__", 2))
3104 /* Stick __ at front of macro name. */
3107 /* Arrange to stick __ at the end as well. */
3111 /* Copy the macro name. */
3112 while (*y && *y != '=' && *y != ' ' && *y != '\t')
3121 /* Copy the value given, if any. */
3122 while (*y && *y != ' ' && *y != '\t')
3125 else if (*y == ' ' || *y == '\t')
3126 /* Copy whitespace to the result. */
3128 /* Don't copy -A options */
3134 /* Copy all of CPP_PREDEFINES into BUF,
3135 but put __ after every -D. */
3139 if (! strncmp (y, "-D", 2))
3144 if (strncmp (y, "__", 2))
3146 /* Stick __ at front of macro name. */
3151 /* Copy the macro name. */
3152 while (*y && *y != '=' && *y != ' ' && *y != '\t')
3155 /* Copy the value given, if any. */
3156 while (*y && *y != ' ' && *y != '\t')
3159 else if (*y == ' ' || *y == '\t')
3160 /* Copy whitespace to the result. */
3162 /* Don't copy -A options */
3168 /* Copy all of the -A options in CPP_PREDEFINES into BUF. */
3172 if (! strncmp (y, "-A", 2))
3173 /* Copy the whole option. */
3174 while (*y && *y != ' ' && *y != '\t')
3176 else if (*y == ' ' || *y == '\t')
3177 /* Copy whitespace to the result. */
3179 /* Don't copy other options. */
3186 value = do_spec_1 (buf, 0, NULL_PTR);
3193 value = do_spec_1 (startfile_spec, 0, NULL_PTR);
3198 /* Here we define characters other than letters and digits. */
3201 p = handle_braces (p);
3207 obstack_1grow (&obstack, '%');
3211 do_spec_1 (soft_matched_part, 1, NULL_PTR);
3212 do_spec_1 (" ", 0, NULL_PTR);
3215 /* Process a string found as the value of a spec given by name.
3216 This feature allows individual machine descriptions
3217 to add and use their own specs.
3218 %[...] modifies -D options the way %P does;
3219 %(...) uses the spec unmodified. */
3224 struct spec_list *sl;
3227 /* The string after the S/P is the name of a spec that is to be
3229 while (*p && *p != ')' && *p != ']')
3232 /* See if it's in the list */
3233 for (len = p - name, sl = specs; sl; sl = sl->next)
3234 if (strncmp (sl->name, name, len) == 0 && !sl->name[len])
3244 value = do_spec_1 (name, 0, NULL_PTR);
3250 char *x = (char *) alloca (strlen (name) * 2 + 1);
3254 /* Copy all of NAME into BUF, but put __ after
3255 every -D and at the end of each arg, */
3258 if (! strncmp (y, "-D", 2))
3266 else if (*y == ' ' || *y == 0)
3280 value = do_spec_1 (buf, 0, NULL_PTR);
3286 /* Discard the closing paren or bracket. */
3293 if (input_from_pipe)
3294 do_spec_1 ("-", 0, NULL_PTR);
3303 /* Backslash: treat next character as ordinary. */
3308 /* Ordinary character: put it into the current argument. */
3309 obstack_1grow (&obstack, c);
3313 return 0; /* End of string */
3316 /* Return 0 if we call do_spec_1 and that returns -1. */
3329 /* A `|' after the open-brace means,
3330 if the test fails, output a single minus sign rather than nothing.
3331 This is used in %{|!pipe:...}. */
3335 /* A `!' after the open-brace negates the condition:
3336 succeed if the specified switch is not present. */
3340 /* A `.' after the open-brace means test against the current suffix. */
3350 while (*p != ':' && *p != '}') p++;
3353 register int count = 1;
3371 int found = (input_suffix != 0
3372 && strlen (input_suffix) == p - filter
3373 && strncmp (input_suffix, filter, p - filter) == 0);
3379 && do_spec_1 (save_string (p + 1, q - p - 2), 0, NULL_PTR) < 0)
3384 else if (p[-1] == '*' && p[0] == '}')
3386 /* Substitute all matching switches as separate args. */
3389 for (i = 0; i < n_switches; i++)
3390 if (!strncmp (switches[i].part1, filter, p - filter))
3395 /* Test for presence of the specified switch. */
3399 /* If name specified ends in *, as in {x*:...},
3400 check for %* and handle that case. */
3401 if (p[-1] == '*' && !negate)
3406 /* First see whether we have %*. */
3410 if (*r == '%' && r[1] == '*')
3414 /* If we do, handle that case. */
3417 /* Substitute all matching switches as separate args.
3418 But do this by substituting for %*
3419 in the text that follows the colon. */
3421 unsigned hard_match_len = p - filter - 1;
3422 char *string = save_string (p + 1, q - p - 2);
3424 for (i = 0; i < n_switches; i++)
3425 if (!strncmp (switches[i].part1, filter, hard_match_len))
3427 do_spec_1 (string, 0, &switches[i].part1[hard_match_len]);
3428 /* Pass any arguments this switch has. */
3436 /* If name specified ends in *, as in {x*:...},
3437 check for presence of any switch name starting with x. */
3440 for (i = 0; i < n_switches; i++)
3442 unsigned hard_match_len = p - filter - 1;
3444 if (!strncmp (switches[i].part1, filter, hard_match_len))
3446 switches[i].valid = 1;
3451 /* Otherwise, check for presence of exact name specified. */
3454 for (i = 0; i < n_switches; i++)
3456 if (!strncmp (switches[i].part1, filter, p - filter)
3457 && switches[i].part1[p - filter] == 0)
3459 switches[i].valid = 1;
3466 /* If it is as desired (present for %{s...}, absent for %{-s...})
3467 then substitute either the switch or the specified
3468 conditional text. */
3469 if (present != negate)
3477 if (do_spec_1 (save_string (p + 1, q - p - 2), 0, NULL_PTR) < 0)
3483 /* Here if a %{|...} conditional fails: output a minus sign,
3484 which means "standard output" or "standard input". */
3485 do_spec_1 ("-", 0, NULL_PTR);
3492 /* Pass a switch to the current accumulating command
3493 in the same form that we received it.
3494 SWITCHNUM identifies the switch; it is an index into
3495 the vector of switches gcc received, which is `switches'.
3496 This cannot fail since it never finishes a command line.
3498 If OMIT_FIRST_WORD is nonzero, then we omit .part1 of the argument. */
3501 give_switch (switchnum, omit_first_word)
3503 int omit_first_word;
3505 if (!omit_first_word)
3507 do_spec_1 ("-", 0, NULL_PTR);
3508 do_spec_1 (switches[switchnum].part1, 1, NULL_PTR);
3510 do_spec_1 (" ", 0, NULL_PTR);
3511 if (switches[switchnum].args != 0)
3514 for (p = switches[switchnum].args; *p; p++)
3516 do_spec_1 (*p, 1, NULL_PTR);
3517 do_spec_1 (" ", 0, NULL_PTR);
3520 switches[switchnum].valid = 1;
3523 /* Search for a file named NAME trying various prefixes including the
3524 user's -B prefix and some standard ones.
3525 Return the absolute file name found. If nothing is found, return NAME. */
3533 newname = find_a_file (&startfile_prefix, name, R_OK);
3534 return newname ? newname : name;
3537 /* Determine whether a directory exists. If LINKER, return 0 for
3538 certain fixed names not needed by the linker. If not LINKER, it is
3539 only important to return 0 if the host machine has a small ARG_MAX
3543 is_directory (path1, path2, linker)
3548 int len1 = strlen (path1);
3549 int len2 = strlen (path2);
3550 char *path = (char *) alloca (3 + len1 + len2);
3554 #ifndef SMALL_ARG_MAX
3559 /* Construct the path from the two parts. Ensure the string ends with "/.".
3560 The resulting path will be a directory even if the given path is a
3562 bcopy (path1, path, len1);
3563 bcopy (path2, path + len1, len2);
3564 cp = path + len1 + len2;
3570 /* Exclude directories that the linker is known to search. */
3572 && ((cp - path == 6 && strcmp (path, "/lib/.") == 0)
3573 || (cp - path == 10 && strcmp (path, "/usr/lib/.") == 0)))
3576 return (stat (path, &st) >= 0 && S_ISDIR (st.st_mode));
3579 /* On fatal signals, delete all the temporary files. */
3582 fatal_error (signum)
3585 signal (signum, SIG_DFL);
3586 delete_failure_queue ();
3587 delete_temp_files ();
3588 /* Get the same signal again, this time not handled,
3589 so its normal effect occurs. */
3590 kill (getpid (), signum);
3601 int linker_was_run = 0;
3602 char *explicit_link_files;
3606 p = argv[0] + strlen (argv[0]);
3607 while (p != argv[0] && p[-1] != '/') --p;
3610 if (signal (SIGINT, SIG_IGN) != SIG_IGN)
3611 signal (SIGINT, fatal_error);
3613 if (signal (SIGHUP, SIG_IGN) != SIG_IGN)
3614 signal (SIGHUP, fatal_error);
3616 if (signal (SIGTERM, SIG_IGN) != SIG_IGN)
3617 signal (SIGTERM, fatal_error);
3619 if (signal (SIGPIPE, SIG_IGN) != SIG_IGN)
3620 signal (SIGPIPE, fatal_error);
3624 argbuf = (char **) xmalloc (argbuf_length * sizeof (char *));
3626 obstack_init (&obstack);
3628 /* Set up to remember the pathname of gcc and any options
3629 needed for collect. We use argv[0] instead of programname because
3630 we need the complete pathname. */
3631 obstack_init (&collect_obstack);
3632 obstack_grow (&collect_obstack, "COLLECT_GCC=", sizeof ("COLLECT_GCC=")-1);
3633 obstack_grow (&collect_obstack, argv[0], strlen (argv[0])+1);
3634 putenv (obstack_finish (&collect_obstack));
3636 /* Choose directory for temp files. */
3638 choose_temp_base ();
3640 /* Make a table of what switches there are (switches, n_switches).
3641 Make a table of specified input files (infiles, n_infiles).
3642 Decode switches that are handled locally. */
3644 process_command (argc, argv);
3646 /* Initialize the vector of specs to just the default.
3647 This means one element containing 0s, as a terminator. */
3649 compilers = (struct compiler *) xmalloc (sizeof default_compilers);
3650 bcopy (default_compilers, compilers, sizeof default_compilers);
3651 n_compilers = n_default_compilers;
3653 /* Read specs from a file if there is one. */
3655 machine_suffix = concat (spec_machine, "/", concat (spec_version, "/", ""));
3656 just_machine_suffix = concat (spec_machine, "/", "");
3658 specs_file = find_a_file (&startfile_prefix, "specs", R_OK);
3659 /* Read the specs file unless it is a default one. */
3660 if (specs_file != 0 && strcmp (specs_file, "specs"))
3661 read_specs (specs_file);
3663 /* If not cross-compiling, look for startfiles in the standard places. */
3664 /* The fact that these are done here, after reading the specs file,
3665 means that it cannot be found in these directories.
3666 But that's okay. It should never be there anyway. */
3669 #ifdef MD_EXEC_PREFIX
3670 add_prefix (&exec_prefix, md_exec_prefix, 0, 0, NULL_PTR);
3671 add_prefix (&startfile_prefix, md_exec_prefix, 0, 0, NULL_PTR);
3674 #ifdef MD_STARTFILE_PREFIX
3675 add_prefix (&startfile_prefix, md_startfile_prefix, 0, 0, NULL_PTR);
3678 #ifdef MD_STARTFILE_PREFIX_1
3679 add_prefix (&startfile_prefix, md_startfile_prefix_1, 0, 0, NULL_PTR);
3682 add_prefix (&startfile_prefix, standard_startfile_prefix, 0, 0,
3684 add_prefix (&startfile_prefix, standard_startfile_prefix_1, 0, 0,
3686 add_prefix (&startfile_prefix, standard_startfile_prefix_2, 0, 0,
3688 #if 0 /* Can cause surprises, and one can use -B./ instead. */
3689 add_prefix (&startfile_prefix, "./", 0, 1, NULL_PTR);
3693 /* Now we have the specs.
3694 Set the `valid' bits for switches that match anything in any spec. */
3696 validate_all_switches ();
3698 /* Warn about any switches that no pass was interested in. */
3700 for (i = 0; i < n_switches; i++)
3701 if (! switches[i].valid)
3702 error ("unrecognized option `-%s'", switches[i].part1);
3704 if (print_libgcc_file_name)
3706 printf ("%s\n", find_file ("libgcc.a"));
3710 /* Obey some of the options. */
3714 fprintf (stderr, "gcc version %s\n", version_string);
3720 fatal ("No input files specified.");
3722 /* Make a place to record the compiler output file names
3723 that correspond to the input files. */
3725 outfiles = (char **) xmalloc (n_infiles * sizeof (char *));
3726 bzero (outfiles, n_infiles * sizeof (char *));
3728 /* Record which files were specified explicitly as link input. */
3730 explicit_link_files = xmalloc (n_infiles);
3731 bzero (explicit_link_files, n_infiles);
3733 for (i = 0; i < n_infiles; i++)
3735 register struct compiler *cp = 0;
3736 int this_file_error = 0;
3738 /* Tell do_spec what to substitute for %i. */
3740 input_filename = infiles[i].name;
3741 input_filename_length = strlen (input_filename);
3742 input_file_number = i;
3744 /* Use the same thing in %o, unless cp->spec says otherwise. */
3746 outfiles[i] = input_filename;
3748 /* Figure out which compiler from the file's suffix. */
3750 cp = lookup_compiler (infiles[i].name, input_filename_length,
3751 infiles[i].language);
3755 /* Ok, we found an applicable compiler. Run its spec. */
3756 /* First say how much of input_filename to substitute for %b */
3760 input_basename = input_filename;
3761 for (p = input_filename; *p; p++)
3763 input_basename = p + 1;
3765 /* Find a suffix starting with the last period,
3766 and set basename_length to exclude that suffix. */
3767 basename_length = strlen (input_basename);
3768 p = input_basename + basename_length;
3769 while (p != input_basename && *p != '.') --p;
3770 if (*p == '.' && p != input_basename)
3772 basename_length = p - input_basename;
3773 input_suffix = p + 1;
3779 for (j = 0; j < sizeof cp->spec / sizeof cp->spec[0]; j++)
3781 len += strlen (cp->spec[j]);
3783 p = (char *) xmalloc (len + 1);
3786 for (j = 0; j < sizeof cp->spec / sizeof cp->spec[0]; j++)
3789 strcpy (p + len, cp->spec[j]);
3790 len += strlen (cp->spec[j]);
3793 value = do_spec (p);
3796 this_file_error = 1;
3799 /* If this file's name does not contain a recognized suffix,
3800 record it as explicit linker input. */
3803 explicit_link_files[i] = 1;
3805 /* Clear the delete-on-failure queue, deleting the files in it
3806 if this compilation failed. */
3808 if (this_file_error)
3810 delete_failure_queue ();
3813 /* If this compilation succeeded, don't delete those files later. */
3814 clear_failure_queue ();
3817 /* Run ld to link all the compiler output files. */
3819 if (error_count == 0)
3821 int tmp = execution_count;
3825 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
3827 putenv_from_prefixes (&exec_prefix, "COMPILER_PATH=");
3828 putenv_from_prefixes (&startfile_prefix, "LIBRARY_PATH=");
3830 /* Build COLLECT_GCC_OPTIONS to have all of the options specified to
3832 obstack_grow (&collect_obstack, "COLLECT_GCC_OPTIONS=",
3833 sizeof ("COLLECT_GCC_OPTIONS=")-1);
3836 for (i = 0; i < n_switches; i++)
3840 obstack_grow (&collect_obstack, " ", 1);
3843 obstack_grow (&collect_obstack, "-", 1);
3844 obstack_grow (&collect_obstack, switches[i].part1,
3845 strlen (switches[i].part1));
3847 for (args = switches[i].args; args && *args; args++)
3849 obstack_grow (&collect_obstack, " ", 1);
3850 obstack_grow (&collect_obstack, *args, strlen (*args));
3853 obstack_grow (&collect_obstack, "\0", 1);
3854 putenv (obstack_finish (&collect_obstack));
3856 value = do_spec (link_command_spec);
3859 linker_was_run = (tmp != execution_count);
3862 /* Warn if a -B option was specified but the prefix was never used. */
3863 unused_prefix_warnings (&exec_prefix);
3864 unused_prefix_warnings (&startfile_prefix);
3866 /* If options said don't run linker,
3867 complain about input files to be given to the linker. */
3869 if (! linker_was_run && error_count == 0)
3870 for (i = 0; i < n_infiles; i++)
3871 if (explicit_link_files[i])
3872 error ("%s: linker input file unused since linking not done",
3875 /* Delete some or all of the temporary files we made. */
3878 delete_failure_queue ();
3879 delete_temp_files ();
3881 exit (error_count > 0 ? (signal_count ? 2 : 1) : 0);
3886 /* Find the proper compilation spec for the file name NAME,
3887 whose length is LENGTH. LANGUAGE is the specified language,
3888 or 0 if none specified. */
3890 static struct compiler *
3891 lookup_compiler (name, length, language)
3896 struct compiler *cp;
3898 /* Look for the language, if one is spec'd. */
3901 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
3905 if (cp->suffix[0] == '@'
3906 && !strcmp (cp->suffix + 1, language))
3910 error ("language %s not recognized", language);
3913 /* Look for a suffix. */
3914 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
3916 if (/* The suffix `-' matches only the file name `-'. */
3917 (!strcmp (cp->suffix, "-") && !strcmp (name, "-"))
3919 (strlen (cp->suffix) < length
3920 /* See if the suffix matches the end of NAME. */
3921 && !strcmp (cp->suffix,
3922 name + length - strlen (cp->suffix))))
3924 if (cp->spec[0][0] == '@')
3926 struct compiler *new;
3927 /* An alias entry maps a suffix to a language.
3928 Search for the language; pass 0 for NAME and LENGTH
3929 to avoid infinite recursion if language not found.
3930 Construct the new compiler spec. */
3931 language = cp->spec[0] + 1;
3932 new = (struct compiler *) xmalloc (sizeof (struct compiler));
3933 new->suffix = cp->suffix;
3934 bcopy (lookup_compiler (NULL_PTR, 0, language)->spec,
3935 new->spec, sizeof new->spec);
3938 /* A non-alias entry: return it. */
3950 register char *value = (char *) malloc (size);
3952 fatal ("virtual memory exhausted");
3957 xrealloc (ptr, size)
3961 register char *value = (char *) realloc (ptr, size);
3963 fatal ("virtual memory exhausted");
3967 /* Return a newly-allocated string whose contents concatenate those of s1, s2, s3. */
3973 int len1 = strlen (s1), len2 = strlen (s2), len3 = strlen (s3);
3974 char *result = xmalloc (len1 + len2 + len3 + 1);
3976 strcpy (result, s1);
3977 strcpy (result + len1, s2);
3978 strcpy (result + len1 + len2, s3);
3979 *(result + len1 + len2 + len3) = 0;
3985 save_string (s, len)
3989 register char *result = xmalloc (len + 1);
3991 bcopy (s, result, len);
3997 pfatal_with_name (name)
4002 if (errno < sys_nerr)
4003 s = concat ("%s: ", sys_errlist[errno], "");
4005 s = "cannot open %s";
4010 perror_with_name (name)
4015 if (errno < sys_nerr)
4016 s = concat ("%s: ", sys_errlist[errno], "");
4018 s = "cannot open %s";
4028 if (errno < sys_nerr)
4029 s = concat ("installation problem, cannot exec %s: ",
4030 sys_errlist[errno], "");
4032 s = "installation problem, cannot exec %s";
4036 /* More 'friendly' abort that prints the line and file.
4037 config.h can #define abort fancy_abort if you like that sort of thing. */
4042 fatal ("Internal gcc abort.");
4047 /* Output an error message and exit */
4057 format = va_arg (ap, char *);
4058 fprintf (stderr, "%s: ", programname);
4059 vfprintf (stderr, format, ap);
4061 fprintf (stderr, "\n");
4062 delete_temp_files ();
4074 format = va_arg (ap, char *);
4075 fprintf (stderr, "%s: ", programname);
4076 vfprintf (stderr, format, ap);
4079 fprintf (stderr, "\n");
4082 #else /* not HAVE_VPRINTF */
4085 fatal (msg, arg1, arg2)
4086 char *msg, *arg1, *arg2;
4088 error (msg, arg1, arg2);
4089 delete_temp_files ();
4094 error (msg, arg1, arg2)
4095 char *msg, *arg1, *arg2;
4097 fprintf (stderr, "%s: ", programname);
4098 fprintf (stderr, msg, arg1, arg2);
4099 fprintf (stderr, "\n");
4102 #endif /* not HAVE_VPRINTF */
4106 validate_all_switches ()
4108 struct compiler *comp;
4111 struct spec_list *spec;
4113 for (comp = compilers; comp->spec[0]; comp++)
4116 for (i = 0; i < sizeof comp->spec / sizeof comp->spec[0] && comp->spec[i]; i++)
4120 if (c == '%' && *p == '{')
4121 /* We have a switch spec. */
4122 validate_switches (p + 1);
4126 /* look through the linked list of extra specs read from the specs file */
4127 for (spec = specs; spec ; spec = spec->next)
4131 if (c == '%' && *p == '{')
4132 /* We have a switch spec. */
4133 validate_switches (p + 1);
4136 p = link_command_spec;
4138 if (c == '%' && *p == '{')
4139 /* We have a switch spec. */
4140 validate_switches (p + 1);
4142 /* Now notice switches mentioned in the machine-specific specs. */
4146 if (c == '%' && *p == '{')
4147 /* We have a switch spec. */
4148 validate_switches (p + 1);
4152 if (c == '%' && *p == '{')
4153 /* We have a switch spec. */
4154 validate_switches (p + 1);
4158 if (c == '%' && *p == '{')
4159 /* We have a switch spec. */
4160 validate_switches (p + 1);
4162 p = signed_char_spec;
4164 if (c == '%' && *p == '{')
4165 /* We have a switch spec. */
4166 validate_switches (p + 1);
4170 if (c == '%' && *p == '{')
4171 /* We have a switch spec. */
4172 validate_switches (p + 1);
4176 if (c == '%' && *p == '{')
4177 /* We have a switch spec. */
4178 validate_switches (p + 1);
4182 if (c == '%' && *p == '{')
4183 /* We have a switch spec. */
4184 validate_switches (p + 1);
4188 if (c == '%' && *p == '{')
4189 /* We have a switch spec. */
4190 validate_switches (p + 1);
4194 if (c == '%' && *p == '{')
4195 /* We have a switch spec. */
4196 validate_switches (p + 1);
4199 /* Look at the switch-name that comes after START
4200 and mark as valid all supplied switches that match it. */
4203 validate_switches (start)
4206 register char *p = start;
4221 while (*p != ':' && *p != '}') p++;
4225 else if (p[-1] == '*')
4227 /* Mark all matching switches as valid. */
4229 for (i = 0; i < n_switches; i++)
4230 if (!strncmp (switches[i].part1, filter, p - filter))
4231 switches[i].valid = 1;
4235 /* Mark an exact matching switch as valid. */
4236 for (i = 0; i < n_switches; i++)
4238 if (!strncmp (switches[i].part1, filter, p - filter)
4239 && switches[i].part1[p - filter] == 0)
4240 switches[i].valid = 1;