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 {"--no-warnings", "-w", 0},
664 {"--language", "-x", "a"},
666 {"--assert", "-A", "a"},
667 {"--prefix", "-B", "a"},
668 {"--comments", "-C", 0},
669 {"--define-macro", "-D", "a"},
670 {"--preprocess", "-E", 0},
671 {"--trace-includes", "-H", 0},
672 {"--include-directory", "-I", "a"},
673 {"--include-barrier", "-I-", 0},
674 {"--library-directory", "-L", "a"},
675 {"--dependencies", "-M", 0},
676 {"--user-dependencies", "-MM", 0},
677 {"--write-dependencies", "-MD", 0},
678 {"--write-user-dependencies", "-MMD", 0},
679 {"--optimize", "-O", "oj"},
680 {"--no-line-commands", "-P", 0},
681 {"--assemble", "-S", 0},
682 {"--undefine-macro", "-U", "a"},
683 {"--use-version", "-V", "a"},
684 {"--for-assembler", "-Wa", "a"},
685 {"--extra-warnings", "-W", 0},
686 {"--all-warnings", "-Wall", 0},
687 {"--warn-", "-W", "*j"},
688 {"--for-linker", "-Xlinker", "a"},
690 {"--ansi", "-ansi", 0},
691 {"--traditional", "-traditional", 0},
692 {"--traditional-cpp", "-traditional-cpp", 0},
693 {"--trigraphs", "-trigraphs", 0},
694 {"--pipe", "-pipe", 0},
695 {"--dumpbase", "-dumpbase", "a"},
696 {"--pedantic", "-pedantic", 0},
697 {"--pedantic-errors", "-pedantic-errors", 0},
698 {"--save-temps", "-save-temps", 0},
699 {"--print-libgcc-file-name", "-print-libgcc-file-name", 0},
700 {"--static", "-static", 0},
701 {"--shared", "-shared", 0},
702 {"--symbolic", "-symbolic", 0},
706 /* Translate the options described by *ARGCP and *ARGVP.
707 Make a new vector and store it back in *ARGVP,
708 and store its length in *ARGVC. */
711 translate_options (argcp
, argvp
)
717 char **argv
= *argvp
;
718 char **newv
= (char **) xmalloc ((argc
+ 2) * 2 * sizeof (char *));
722 newv
[newindex
++] = argv
[i
++];
726 /* Translate -- options. */
727 if (argv
[i
][0] == '-' && argv
[i
][1] == '-')
729 /* Find a mapping that applies to this option. */
730 for (j
= 0; j
< sizeof (option_map
) / sizeof (option_map
[0]); j
++)
732 int optlen
= strlen (option_map
[j
].name
);
733 int complen
= strlen (argv
[i
]);
734 if (complen
> optlen
)
736 if (!strncmp (argv
[i
], option_map
[j
].name
, complen
))
738 int extra
= strlen (argv
[i
]) > optlen
;
743 /* If the option has an argument, accept that. */
744 if (argv
[i
][optlen
] == '=')
745 arg
= argv
[i
] + optlen
+ 1;
746 /* If this mapping allows extra text at end of name,
747 accept that as "argument". */
748 else if (index (option_map
[j
].arg_info
, '*') != 0)
749 arg
= argv
[i
] + optlen
;
750 /* Otherwise, extra text at end means mismatch.
751 Try other mappings. */
755 else if (index (option_map
[j
].arg_info
, '*') != 0)
756 error ("Incomplete `%s' option", option_map
[j
].name
);
758 /* Handle arguments. */
759 if (index (option_map
[j
].arg_info
, 'o') != 0)
764 error ("Missing argument to `%s' option",
769 else if (index (option_map
[j
].arg_info
, 'a') == 0)
772 error ("Extraneous argument to `%s' option",
777 /* Store the translation as one argv elt or as two. */
778 if (arg
!= 0 && index (option_map
[j
].arg_info
, 'j') != 0)
779 newv
[newindex
++] = concat (option_map
[j
].equivalent
,
783 newv
[newindex
++] = option_map
[j
].equivalent
;
784 newv
[newindex
++] = arg
;
787 newv
[newindex
++] = option_map
[j
].equivalent
;
794 /* Handle old-fashioned options--just copy them through,
795 with their arguments. */
796 else if (argv
[i
][0] == '-')
798 char *p
= argv
[i
] + 1;
802 if (SWITCH_TAKES_ARG (c
) > (p
[1] != 0))
803 nskip
+= SWITCH_TAKES_ARG (c
) - (p
[1] != 0);
804 else if (WORD_SWITCH_TAKES_ARG (p
))
805 nskip
+= WORD_SWITCH_TAKES_ARG (p
);
809 newv
[newindex
++] = argv
[i
++];
814 /* Ordinary operands, or +e options. */
815 newv
[newindex
++] = argv
[i
++];
824 /* Read compilation specs from a file named FILENAME,
825 replacing the default ones.
827 A suffix which starts with `*' is a definition for
828 one of the machine-specific sub-specs. The "suffix" should be
829 *asm, *cc1, *cpp, *link, *startfile, *signed_char, etc.
830 The corresponding spec is stored in asm_spec, etc.,
831 rather than in the `compilers' vector.
833 Anything invalid in the file is a fatal error. */
836 read_specs (filename
)
845 fprintf (stderr
, "Reading specs from %s\n", filename
);
847 /* Open and stat the file. */
848 desc
= open (filename
, 0, 0);
850 pfatal_with_name (filename
);
851 if (stat (filename
, &statbuf
) < 0)
852 pfatal_with_name (filename
);
854 /* Read contents of file into BUFFER. */
855 buffer
= xmalloc ((unsigned) statbuf
.st_size
+ 1);
856 read (desc
, buffer
, (unsigned) statbuf
.st_size
);
857 buffer
[statbuf
.st_size
] = 0;
860 /* Scan BUFFER for specs, putting them in the vector. */
866 char *in
, *out
, *p1
, *p2
;
868 /* Advance P in BUFFER to the next nonblank nocomment line. */
869 p
= skip_whitespace (p
);
873 /* Find the colon that should end the suffix. */
875 while (*p1
&& *p1
!= ':' && *p1
!= '\n') p1
++;
876 /* The colon shouldn't be missing. */
878 fatal ("specs file malformed after %d characters", p1
- buffer
);
879 /* Skip back over trailing whitespace. */
881 while (p2
> buffer
&& (p2
[-1] == ' ' || p2
[-1] == '\t')) p2
--;
882 /* Copy the suffix to a string. */
883 suffix
= save_string (p
, p2
- p
);
884 /* Find the next line. */
885 p
= skip_whitespace (p1
+ 1);
887 fatal ("specs file malformed after %d characters", p
- buffer
);
889 /* Find next blank line. */
890 while (*p1
&& !(*p1
== '\n' && p1
[1] == '\n')) p1
++;
891 /* Specs end at the blank line and do not include the newline. */
892 spec
= save_string (p
, p1
- p
);
895 /* Delete backslash-newline sequences from the spec. */
900 if (in
[0] == '\\' && in
[1] == '\n')
902 else if (in
[0] == '#')
904 while (*in
&& *in
!= '\n') in
++;
911 if (suffix
[0] == '*')
913 if (! strcmp (suffix
, "*link_command"))
914 link_command_spec
= spec
;
916 set_spec (suffix
+ 1, spec
);
920 /* Add this pair to the vector. */
922 = ((struct compiler
*)
923 xrealloc (compilers
, (n_compilers
+ 2) * sizeof (struct compiler
)));
924 compilers
[n_compilers
].suffix
= suffix
;
925 bzero (compilers
[n_compilers
].spec
,
926 sizeof compilers
[n_compilers
].spec
);
927 compilers
[n_compilers
].spec
[0] = spec
;
932 link_command_spec
= spec
;
935 if (link_command_spec
== 0)
936 fatal ("spec file has no spec for linking");
945 /* A fully-blank line is a delimiter in the SPEC file and shouldn't
946 be considered whitespace. */
947 if (p
[0] == '\n' && p
[1] == '\n' && p
[2] == '\n')
949 else if (*p
== '\n' || *p
== ' ' || *p
== '\t')
953 while (*p
!= '\n') p
++;
963 /* Structure to keep track of the specs that have been defined so far. These
964 are accessed using %(specname) or %[specname] in a compiler or link spec. */
968 char *name
; /* Name of the spec. */
969 char *spec
; /* The spec itself. */
970 struct spec_list
*next
; /* Next spec in linked list. */
973 /* List of specs that have been defined so far. */
975 static struct spec_list
*specs
= (struct spec_list
*) 0;
977 /* Change the value of spec NAME to SPEC. If SPEC is empty, then the spec is
978 removed; If the spec starts with a + then SPEC is added to the end of the
982 set_spec (name
, spec
)
986 struct spec_list
*sl
;
989 /* See if the spec already exists */
990 for (sl
= specs
; sl
; sl
= sl
->next
)
991 if (strcmp (sl
->name
, name
) == 0)
996 /* Not found - make it */
997 sl
= (struct spec_list
*) xmalloc (sizeof (struct spec_list
));
998 sl
->name
= save_string (name
, strlen (name
));
999 sl
->spec
= save_string ("", 0);
1004 old_spec
= sl
->spec
;
1005 if (name
&& spec
[0] == '+' && isspace (spec
[1]))
1006 sl
->spec
= concat (old_spec
, spec
+ 1, "");
1008 sl
->spec
= save_string (spec
, strlen (spec
));
1010 if (! strcmp (name
, "asm"))
1011 asm_spec
= sl
->spec
;
1012 else if (! strcmp (name
, "asm_final"))
1013 asm_final_spec
= sl
->spec
;
1014 else if (! strcmp (name
, "cc1"))
1015 cc1_spec
= sl
->spec
;
1016 else if (! strcmp (name
, "cc1plus"))
1017 cc1plus_spec
= sl
->spec
;
1018 else if (! strcmp (name
, "cpp"))
1019 cpp_spec
= sl
->spec
;
1020 else if (! strcmp (name
, "endfile"))
1021 endfile_spec
= sl
->spec
;
1022 else if (! strcmp (name
, "lib"))
1023 lib_spec
= sl
->spec
;
1024 else if (! strcmp (name
, "link"))
1025 link_spec
= sl
->spec
;
1026 else if (! strcmp (name
, "predefines"))
1027 cpp_predefines
= sl
->spec
;
1028 else if (! strcmp (name
, "signed_char"))
1029 signed_char_spec
= sl
->spec
;
1030 else if (! strcmp (name
, "startfile"))
1031 startfile_spec
= sl
->spec
;
1032 else if (! strcmp (name
, "switches_need_spaces"))
1033 switches_need_spaces
= sl
->spec
;
1034 else if (! strcmp (name
, "cross_compile"))
1035 cross_compile
= atoi (sl
->spec
);
1036 /* Free the old spec */
1041 /* Accumulate a command (program name and args), and run it. */
1043 /* Vector of pointers to arguments in the current line of specifications. */
1045 static char **argbuf
;
1047 /* Number of elements allocated in argbuf. */
1049 static int argbuf_length
;
1051 /* Number of elements in argbuf currently in use (containing args). */
1053 static int argbuf_index
;
1055 /* This is the list of suffixes and codes (%g/%u/%U) and the associated
1056 temp file. Used only if MKTEMP_EACH_FILE. */
1058 static struct temp_name
{
1059 char *suffix
; /* suffix associated with the code. */
1060 int length
; /* strlen (suffix). */
1061 int unique
; /* Indicates whether %g or %u/%U was used. */
1062 char *filename
; /* associated filename. */
1063 int filename_length
; /* strlen (filename). */
1064 struct temp_name
*next
;
1067 /* Number of commands executed so far. */
1069 static int execution_count
;
1071 /* Number of commands that exited with a signal. */
1073 static int signal_count
;
1075 /* Name with which this program was invoked. */
1077 static char *programname
;
1079 /* Structures to keep track of prefixes to try when looking for files. */
1083 char *prefix
; /* String to prepend to the path. */
1084 struct prefix_list
*next
; /* Next in linked list. */
1085 int require_machine_suffix
; /* Don't use without machine_suffix. */
1086 /* 2 means try both machine_suffix and just_machine_suffix. */
1087 int *used_flag_ptr
; /* 1 if a file was found with this prefix. */
1092 struct prefix_list
*plist
; /* List of prefixes to try */
1093 int max_len
; /* Max length of a prefix in PLIST */
1094 char *name
; /* Name of this list (used in config stuff) */
1097 /* List of prefixes to try when looking for executables. */
1099 static struct path_prefix exec_prefix
= { 0, 0, "exec" };
1101 /* List of prefixes to try when looking for startup (crt0) files. */
1103 static struct path_prefix startfile_prefix
= { 0, 0, "startfile" };
1105 /* Suffix to attach to directories searched for commands.
1106 This looks like `MACHINE/VERSION/'. */
1108 static char *machine_suffix
= 0;
1110 /* Suffix to attach to directories searched for commands.
1111 This is just `MACHINE/'. */
1113 static char *just_machine_suffix
= 0;
1115 /* Adjusted value of GCC_EXEC_PREFIX envvar. */
1117 static char *gcc_exec_prefix
;
1119 /* Default prefixes to attach to command names. */
1121 #ifdef CROSS_COMPILE /* Don't use these prefixes for a cross compiler. */
1122 #undef MD_EXEC_PREFIX
1123 #undef MD_STARTFILE_PREFIX
1124 #undef MD_STARTFILE_PREFIX_1
1127 #ifndef STANDARD_EXEC_PREFIX
1128 #define STANDARD_EXEC_PREFIX "/usr/local/lib/gcc-lib/"
1129 #endif /* !defined STANDARD_EXEC_PREFIX */
1131 static char *standard_exec_prefix
= STANDARD_EXEC_PREFIX
;
1132 static char *standard_exec_prefix_1
= "/usr/lib/gcc/";
1133 #ifdef MD_EXEC_PREFIX
1134 static char *md_exec_prefix
= MD_EXEC_PREFIX
;
1137 #ifndef STANDARD_STARTFILE_PREFIX
1138 #define STANDARD_STARTFILE_PREFIX "/usr/local/lib/"
1139 #endif /* !defined STANDARD_STARTFILE_PREFIX */
1141 #ifdef MD_STARTFILE_PREFIX
1142 static char *md_startfile_prefix
= MD_STARTFILE_PREFIX
;
1144 #ifdef MD_STARTFILE_PREFIX_1
1145 static char *md_startfile_prefix_1
= MD_STARTFILE_PREFIX_1
;
1147 static char *standard_startfile_prefix
= STANDARD_STARTFILE_PREFIX
;
1148 static char *standard_startfile_prefix_1
= "/lib/";
1149 static char *standard_startfile_prefix_2
= "/usr/lib/";
1151 #ifndef TOOLDIR_BASE_PREFIX
1152 #define TOOLDIR_BASE_PREFIX "/usr/local/"
1154 static char *tooldir_base_prefix
= TOOLDIR_BASE_PREFIX
;
1155 static char *tooldir_prefix
;
1157 /* Clear out the vector of arguments (after a command is executed). */
1165 /* Add one argument to the vector at the end.
1166 This is done when a space is seen or at the end of the line.
1167 If DELETE_ALWAYS is nonzero, the arg is a filename
1168 and the file should be deleted eventually.
1169 If DELETE_FAILURE is nonzero, the arg is a filename
1170 and the file should be deleted if this compilation fails. */
1173 store_arg (arg
, delete_always
, delete_failure
)
1175 int delete_always
, delete_failure
;
1177 if (argbuf_index
+ 1 == argbuf_length
)
1179 argbuf
= (char **) xrealloc (argbuf
, (argbuf_length
*= 2) * sizeof (char *));
1182 argbuf
[argbuf_index
++] = arg
;
1183 argbuf
[argbuf_index
] = 0;
1185 if (delete_always
|| delete_failure
)
1186 record_temp_file (arg
, delete_always
, delete_failure
);
1189 /* Record the names of temporary files we tell compilers to write,
1190 and delete them at the end of the run. */
1192 /* This is the common prefix we use to make temp file names.
1193 It is chosen once for each run of this program.
1194 It is substituted into a spec by %g.
1195 Thus, all temp file names contain this prefix.
1196 In practice, all temp file names start with this prefix.
1198 This prefix comes from the envvar TMPDIR if it is defined;
1199 otherwise, from the P_tmpdir macro if that is defined;
1200 otherwise, in /usr/tmp or /tmp. */
1202 static char *temp_filename
;
1204 /* Length of the prefix. */
1206 static int temp_filename_length
;
1208 /* Define the list of temporary files to delete. */
1213 struct temp_file
*next
;
1216 /* Queue of files to delete on success or failure of compilation. */
1217 static struct temp_file
*always_delete_queue
;
1218 /* Queue of files to delete on failure of compilation. */
1219 static struct temp_file
*failure_delete_queue
;
1221 /* Record FILENAME as a file to be deleted automatically.
1222 ALWAYS_DELETE nonzero means delete it if all compilation succeeds;
1223 otherwise delete it in any case.
1224 FAIL_DELETE nonzero means delete it if a compilation step fails;
1225 otherwise delete it in any case. */
1228 record_temp_file (filename
, always_delete
, fail_delete
)
1233 register char *name
;
1234 name
= xmalloc (strlen (filename
) + 1);
1235 strcpy (name
, filename
);
1239 register struct temp_file
*temp
;
1240 for (temp
= always_delete_queue
; temp
; temp
= temp
->next
)
1241 if (! strcmp (name
, temp
->name
))
1243 temp
= (struct temp_file
*) xmalloc (sizeof (struct temp_file
));
1244 temp
->next
= always_delete_queue
;
1246 always_delete_queue
= temp
;
1252 register struct temp_file
*temp
;
1253 for (temp
= failure_delete_queue
; temp
; temp
= temp
->next
)
1254 if (! strcmp (name
, temp
->name
))
1256 temp
= (struct temp_file
*) xmalloc (sizeof (struct temp_file
));
1257 temp
->next
= failure_delete_queue
;
1259 failure_delete_queue
= temp
;
1264 /* Delete all the temporary files whose names we previously recorded. */
1267 delete_temp_files ()
1269 register struct temp_file
*temp
;
1271 for (temp
= always_delete_queue
; temp
; temp
= temp
->next
)
1275 printf ("Delete %s? (y or n) ", temp
->name
);
1279 while (getchar () != '\n') ;
1280 if (i
== 'y' || i
== 'Y')
1284 if (stat (temp
->name
, &st
) >= 0)
1286 /* Delete only ordinary files. */
1287 if (S_ISREG (st
.st_mode
))
1288 if (unlink (temp
->name
) < 0)
1290 perror_with_name (temp
->name
);
1295 always_delete_queue
= 0;
1298 /* Delete all the files to be deleted on error. */
1301 delete_failure_queue ()
1303 register struct temp_file
*temp
;
1305 for (temp
= failure_delete_queue
; temp
; temp
= temp
->next
)
1309 printf ("Delete %s? (y or n) ", temp
->name
);
1313 while (getchar () != '\n') ;
1314 if (i
== 'y' || i
== 'Y')
1317 if (unlink (temp
->name
) < 0)
1319 perror_with_name (temp
->name
);
1325 clear_failure_queue ()
1327 failure_delete_queue
= 0;
1330 /* Compute a string to use as the base of all temporary file names.
1331 It is substituted for %g. */
1336 char *base
= getenv ("TMPDIR");
1339 if (base
== (char *)0)
1342 if (access (P_tmpdir
, R_OK
| W_OK
) == 0)
1345 if (base
== (char *)0)
1347 if (access ("/usr/tmp", R_OK
| W_OK
) == 0)
1354 len
= strlen (base
);
1355 temp_filename
= xmalloc (len
+ sizeof("/ccXXXXXX"));
1356 strcpy (temp_filename
, base
);
1357 if (len
> 0 && temp_filename
[len
-1] != '/')
1358 temp_filename
[len
++] = '/';
1359 strcpy (temp_filename
+ len
, "ccXXXXXX");
1361 mktemp (temp_filename
);
1362 temp_filename_length
= strlen (temp_filename
);
1363 if (temp_filename_length
== 0)
1368 /* Routine to add variables to the environment. We do this to pass
1369 the pathname of the gcc driver, and the directories search to the
1370 collect2 program, which is being run as ld. This way, we can be
1371 sure of executing the right compiler when collect2 wants to build
1372 constructors and destructors. Since the environment variables we
1373 use come from an obstack, we don't have to worry about allocating
1382 #ifndef VMS /* nor about VMS */
1384 extern char **environ
;
1385 char **old_environ
= environ
;
1389 int str_len
= strlen (str
);
1393 while ((ch
= *p
++) != '\0' && ch
!= '=')
1399 /* Search for replacing an existing environment variable, and
1400 count the number of total environment variables. */
1401 for (envp
= old_environ
; *envp
; envp
++)
1404 if (!strncmp (str
, *envp
, name_len
))
1411 /* Add a new environment variable */
1412 environ
= (char **) xmalloc (sizeof (char *) * (num_envs
+2));
1414 bcopy (old_environ
, environ
+1, sizeof (char *) * (num_envs
+1));
1419 #endif /* HAVE_PUTENV */
1422 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables for collect. */
1425 putenv_from_prefixes (paths
, env_var
)
1426 struct path_prefix
*paths
;
1429 int suffix_len
= (machine_suffix
) ? strlen (machine_suffix
) : 0;
1431 = (just_machine_suffix
) ? strlen (just_machine_suffix
) : 0;
1432 int first_time
= TRUE
;
1433 struct prefix_list
*pprefix
;
1435 obstack_grow (&collect_obstack
, env_var
, strlen (env_var
));
1437 for (pprefix
= paths
->plist
; pprefix
!= 0; pprefix
= pprefix
->next
)
1439 int len
= strlen (pprefix
->prefix
);
1442 && is_directory (pprefix
->prefix
, machine_suffix
, 0))
1445 obstack_1grow (&collect_obstack
, PATH_SEPARATOR
);
1448 obstack_grow (&collect_obstack
, pprefix
->prefix
, len
);
1449 obstack_grow (&collect_obstack
, machine_suffix
, suffix_len
);
1452 if (just_machine_suffix
1453 && pprefix
->require_machine_suffix
== 2
1454 && is_directory (pprefix
->prefix
, just_machine_suffix
, 0))
1457 obstack_1grow (&collect_obstack
, PATH_SEPARATOR
);
1460 obstack_grow (&collect_obstack
, pprefix
->prefix
, len
);
1461 obstack_grow (&collect_obstack
, just_machine_suffix
,
1465 if (!pprefix
->require_machine_suffix
)
1468 obstack_1grow (&collect_obstack
, PATH_SEPARATOR
);
1471 obstack_grow (&collect_obstack
, pprefix
->prefix
, len
);
1474 obstack_1grow (&collect_obstack
, '\0');
1475 putenv (obstack_finish (&collect_obstack
));
1479 /* Search for NAME using the prefix list PREFIXES. MODE is passed to
1480 access to check permissions.
1481 Return 0 if not found, otherwise return its name, allocated with malloc. */
1484 find_a_file (pprefix
, name
, mode
)
1485 struct path_prefix
*pprefix
;
1490 char *file_suffix
= ((mode
& X_OK
) != 0 ? EXECUTABLE_SUFFIX
: "");
1491 struct prefix_list
*pl
;
1492 int len
= pprefix
->max_len
+ strlen (name
) + strlen (file_suffix
) + 1;
1495 len
+= strlen (machine_suffix
);
1497 temp
= xmalloc (len
);
1499 /* Determine the filename to execute (special case for absolute paths). */
1503 if (access (name
, mode
))
1505 strcpy (temp
, name
);
1510 for (pl
= pprefix
->plist
; pl
; pl
= pl
->next
)
1514 strcpy (temp
, pl
->prefix
);
1515 strcat (temp
, machine_suffix
);
1516 strcat (temp
, name
);
1517 if (access (temp
, mode
) == 0)
1519 if (pl
->used_flag_ptr
!= 0)
1520 *pl
->used_flag_ptr
= 1;
1523 /* Some systems have a suffix for executable files.
1524 So try appending that. */
1525 if (file_suffix
[0] != 0)
1527 strcat (temp
, file_suffix
);
1528 if (access (temp
, mode
) == 0)
1530 if (pl
->used_flag_ptr
!= 0)
1531 *pl
->used_flag_ptr
= 1;
1536 /* Certain prefixes are tried with just the machine type,
1537 not the version. This is used for finding as, ld, etc. */
1538 if (just_machine_suffix
&& pl
->require_machine_suffix
== 2)
1540 strcpy (temp
, pl
->prefix
);
1541 strcat (temp
, just_machine_suffix
);
1542 strcat (temp
, name
);
1543 if (access (temp
, mode
) == 0)
1545 if (pl
->used_flag_ptr
!= 0)
1546 *pl
->used_flag_ptr
= 1;
1549 /* Some systems have a suffix for executable files.
1550 So try appending that. */
1551 if (file_suffix
[0] != 0)
1553 strcat (temp
, file_suffix
);
1554 if (access (temp
, mode
) == 0)
1556 if (pl
->used_flag_ptr
!= 0)
1557 *pl
->used_flag_ptr
= 1;
1562 /* Certain prefixes can't be used without the machine suffix
1563 when the machine or version is explicitly specified. */
1564 if (!pl
->require_machine_suffix
)
1566 strcpy (temp
, pl
->prefix
);
1567 strcat (temp
, name
);
1568 if (access (temp
, mode
) == 0)
1570 if (pl
->used_flag_ptr
!= 0)
1571 *pl
->used_flag_ptr
= 1;
1574 /* Some systems have a suffix for executable files.
1575 So try appending that. */
1576 if (file_suffix
[0] != 0)
1578 strcat (temp
, file_suffix
);
1579 if (access (temp
, mode
) == 0)
1581 if (pl
->used_flag_ptr
!= 0)
1582 *pl
->used_flag_ptr
= 1;
1593 /* Add an entry for PREFIX in PLIST. If FIRST is set, it goes
1594 at the start of the list, otherwise it goes at the end.
1596 If WARN is nonzero, we will warn if no file is found
1597 through this prefix. WARN should point to an int
1598 which will be set to 1 if this entry is used.
1600 REQUIRE_MACHINE_SUFFIX is 1 if this prefix can't be used without
1601 the complete value of machine_suffix.
1602 2 means try both machine_suffix and just_machine_suffix. */
1605 add_prefix (pprefix
, prefix
, first
, require_machine_suffix
, warn
)
1606 struct path_prefix
*pprefix
;
1609 int require_machine_suffix
;
1612 struct prefix_list
*pl
, **prev
;
1615 if (!first
&& pprefix
->plist
)
1617 for (pl
= pprefix
->plist
; pl
->next
; pl
= pl
->next
)
1622 prev
= &pprefix
->plist
;
1624 /* Keep track of the longest prefix */
1626 len
= strlen (prefix
);
1627 if (len
> pprefix
->max_len
)
1628 pprefix
->max_len
= len
;
1630 pl
= (struct prefix_list
*) xmalloc (sizeof (struct prefix_list
));
1631 pl
->prefix
= save_string (prefix
, len
);
1632 pl
->require_machine_suffix
= require_machine_suffix
;
1633 pl
->used_flag_ptr
= warn
;
1640 pl
->next
= (struct prefix_list
*) 0;
1644 /* Print warnings for any prefixes in the list PPREFIX that were not used. */
1647 unused_prefix_warnings (pprefix
)
1648 struct path_prefix
*pprefix
;
1650 struct prefix_list
*pl
= pprefix
->plist
;
1654 if (pl
->used_flag_ptr
!= 0 && !*pl
->used_flag_ptr
)
1656 error ("file path prefix `%s' never used",
1658 /* Prevent duplicate warnings. */
1659 *pl
->used_flag_ptr
= 1;
1665 /* Get rid of all prefixes built up so far in *PLISTP. */
1668 free_path_prefix (pprefix
)
1669 struct path_prefix
*pprefix
;
1671 struct prefix_list
*pl
= pprefix
->plist
;
1672 struct prefix_list
*temp
;
1678 free (temp
->prefix
);
1679 free ((char *) temp
);
1681 pprefix
->plist
= (struct prefix_list
*) 0;
1684 /* stdin file number. */
1685 #define STDIN_FILE_NO 0
1687 /* stdout file number. */
1688 #define STDOUT_FILE_NO 1
1690 /* value of `pipe': port index for reading. */
1693 /* value of `pipe': port index for writing. */
1694 #define WRITE_PORT 1
1696 /* Pipe waiting from last process, to be used as input for the next one.
1697 Value is STDIN_FILE_NO if no pipe is waiting
1698 (i.e. the next command is the first of a group). */
1700 static int last_pipe_input
;
1702 /* Fork one piped subcommand. FUNC is the system call to use
1703 (either execv or execvp). ARGV is the arg vector to use.
1704 NOT_LAST is nonzero if this is not the last subcommand
1705 (i.e. its output should be piped to the next one.) */
1710 /* Declare these to avoid compilation error. They won't be called. */
1711 int execv(const char *a
, const char **b
){}
1712 int execvp(const char *a
, const char **b
){}
1715 pexecute (search_flag
, program
, argv
, not_last
)
1725 scmd
= (char *)malloc (strlen (program
) + strlen (temp_filename
) + 6);
1726 sprintf (scmd
, "%s @%s.gp", program
, temp_filename
);
1727 argfile
= fopen (scmd
+strlen (program
) + 2, "w");
1729 pfatal_with_name (scmd
+ strlen (program
) + 2);
1731 for (i
=1; argv
[i
]; i
++)
1734 for (cp
= argv
[i
]; *cp
; cp
++)
1736 if (*cp
== '"' || *cp
== '\'' || *cp
== '\\' || isspace (*cp
))
1737 fputc ('\\', argfile
);
1738 fputc (*cp
, argfile
);
1740 fputc ('\n', argfile
);
1746 remove (scmd
+ strlen (program
) + 2);
1750 #else /* not __MSDOS__ */
1753 pexecute (search_flag
, program
, argv
, not_last
)
1759 int (*func
)() = (search_flag
? execv
: execvp
);
1762 int input_desc
= last_pipe_input
;
1763 int output_desc
= STDOUT_FILE_NO
;
1764 int retries
, sleep_interval
;
1766 /* If this isn't the last process, make a pipe for its output,
1767 and record it as waiting to be the input to the next process. */
1771 if (pipe (pdes
) < 0)
1772 pfatal_with_name ("pipe");
1773 output_desc
= pdes
[WRITE_PORT
];
1774 last_pipe_input
= pdes
[READ_PORT
];
1777 last_pipe_input
= STDIN_FILE_NO
;
1779 /* Fork a subprocess; wait and retry if it fails. */
1781 for (retries
= 0; retries
< 4; retries
++)
1786 sleep (sleep_interval
);
1787 sleep_interval
*= 2;
1794 pfatal_with_name ("fork");
1796 pfatal_with_name ("vfork");
1802 /* Move the input and output pipes into place, if nec. */
1803 if (input_desc
!= STDIN_FILE_NO
)
1805 close (STDIN_FILE_NO
);
1809 if (output_desc
!= STDOUT_FILE_NO
)
1811 close (STDOUT_FILE_NO
);
1813 close (output_desc
);
1816 /* Close the parent's descs that aren't wanted here. */
1817 if (last_pipe_input
!= STDIN_FILE_NO
)
1818 close (last_pipe_input
);
1820 /* Exec the program. */
1821 (*func
) (program
, argv
);
1822 perror_exec (program
);
1828 /* In the parent, after forking.
1829 Close the descriptors that we made for this child. */
1830 if (input_desc
!= STDIN_FILE_NO
)
1832 if (output_desc
!= STDOUT_FILE_NO
)
1833 close (output_desc
);
1835 /* Return child's process number. */
1840 #endif /* not __MSDOS__ */
1844 pexecute (search_flag
, program
, argv
, not_last
)
1850 return (search_flag
? spawnv
: spawnvp
) (1, program
, argv
);
1852 #endif /* not OS2 */
1854 /* Execute the command specified by the arguments on the current line of spec.
1855 When using pipes, this includes several piped-together commands
1856 with `|' between them.
1858 Return 0 if successful, -1 if failed. */
1864 int n_commands
; /* # of command. */
1868 char *prog
; /* program name. */
1869 char **argv
; /* vector of args. */
1870 int pid
; /* pid of process for this command. */
1873 struct command
*commands
; /* each command buffer with above info. */
1875 /* Count # of piped commands. */
1876 for (n_commands
= 1, i
= 0; i
< argbuf_index
; i
++)
1877 if (strcmp (argbuf
[i
], "|") == 0)
1880 /* Get storage for each command. */
1882 = (struct command
*) alloca (n_commands
* sizeof (struct command
));
1884 /* Split argbuf into its separate piped processes,
1885 and record info about each one.
1886 Also search for the programs that are to be run. */
1888 commands
[0].prog
= argbuf
[0]; /* first command. */
1889 commands
[0].argv
= &argbuf
[0];
1890 string
= find_a_file (&exec_prefix
, commands
[0].prog
, X_OK
);
1892 commands
[0].argv
[0] = string
;
1894 for (n_commands
= 1, i
= 0; i
< argbuf_index
; i
++)
1895 if (strcmp (argbuf
[i
], "|") == 0)
1896 { /* each command. */
1898 fatal ("-pipe not supported under MS-DOS");
1900 argbuf
[i
] = 0; /* termination of command args. */
1901 commands
[n_commands
].prog
= argbuf
[i
+ 1];
1902 commands
[n_commands
].argv
= &argbuf
[i
+ 1];
1903 string
= find_a_file (&exec_prefix
, commands
[n_commands
].prog
, X_OK
);
1905 commands
[n_commands
].argv
[0] = string
;
1909 argbuf
[argbuf_index
] = 0;
1911 /* If -v, print what we are about to do, and maybe query. */
1915 /* Print each piped command as a separate line. */
1916 for (i
= 0; i
< n_commands
; i
++)
1920 for (j
= commands
[i
].argv
; *j
; j
++)
1921 fprintf (stderr
, " %s", *j
);
1923 /* Print a pipe symbol after all but the last command. */
1924 if (i
+ 1 != n_commands
)
1925 fprintf (stderr
, " |");
1926 fprintf (stderr
, "\n");
1930 fprintf (stderr
, "\nGo ahead? (y or n) ");
1934 while (getchar () != '\n') ;
1935 if (i
!= 'y' && i
!= 'Y')
1940 /* Run each piped subprocess. */
1942 last_pipe_input
= STDIN_FILE_NO
;
1943 for (i
= 0; i
< n_commands
; i
++)
1945 char *string
= commands
[i
].argv
[0];
1947 commands
[i
].pid
= pexecute (string
!= commands
[i
].prog
,
1948 string
, commands
[i
].argv
,
1949 i
+ 1 < n_commands
);
1951 if (string
!= commands
[i
].prog
)
1957 /* Wait for all the subprocesses to finish.
1958 We don't care what order they finish in;
1959 we know that N_COMMANDS waits will get them all. */
1964 for (i
= 0; i
< n_commands
; i
++)
1971 status
= pid
= commands
[i
].pid
;
1973 pid
= wait (&status
);
1981 for (j
= 0; j
< n_commands
; j
++)
1982 if (commands
[j
].pid
== pid
)
1983 prog
= commands
[j
].prog
;
1985 if ((status
& 0x7F) != 0)
1987 fatal ("Internal compiler error: program %s got fatal signal %d",
1988 prog
, (status
& 0x7F));
1991 if (((status
& 0xFF00) >> 8) >= MIN_FATAL_STATUS
)
1999 /* Find all the switches given to us
2000 and make a vector describing them.
2001 The elements of the vector are strings, one per switch given.
2002 If a switch uses following arguments, then the `part1' field
2003 is the switch itself and the `args' field
2004 is a null-terminated vector containing the following arguments.
2005 The `valid' field is nonzero if any spec has looked at this switch;
2006 if it remains zero at the end of the run, it must be meaningless. */
2015 static struct switchstr
*switches
;
2017 static int n_switches
;
2025 /* Also a vector of input files specified. */
2027 static struct infile
*infiles
;
2029 static int n_infiles
;
2031 /* And a vector of corresponding output files is made up later. */
2033 static char **outfiles
;
2035 /* Create the vector `switches' and its contents.
2036 Store its length in `n_switches'. */
2039 process_command (argc
, argv
)
2045 char *spec_lang
= 0;
2046 int last_language_n_infiles
;
2048 gcc_exec_prefix
= getenv ("GCC_EXEC_PREFIX");
2053 /* Default for -V is our version number, ending at first space. */
2054 spec_version
= save_string (version_string
, strlen (version_string
));
2055 for (temp
= spec_version
; *temp
&& *temp
!= ' '; temp
++);
2056 if (*temp
) *temp
= '\0';
2058 /* Set up the default search paths. */
2060 if (gcc_exec_prefix
)
2062 add_prefix (&exec_prefix
, gcc_exec_prefix
, 0, 0, NULL_PTR
);
2063 add_prefix (&startfile_prefix
, gcc_exec_prefix
, 0, 0, NULL_PTR
);
2066 /* COMPILER_PATH and LIBRARY_PATH have values
2067 that are lists of directory names with colons. */
2069 temp
= getenv ("COMPILER_PATH");
2072 char *startp
, *endp
;
2073 char *nstore
= (char *) alloca (strlen (temp
) + 3);
2075 startp
= endp
= temp
;
2078 if (*endp
== PATH_SEPARATOR
|| *endp
== 0)
2080 strncpy (nstore
, startp
, endp
-startp
);
2083 strcpy (nstore
, "./");
2085 else if (endp
[-1] != '/')
2087 nstore
[endp
-startp
] = '/';
2088 nstore
[endp
-startp
+1] = 0;
2091 nstore
[endp
-startp
] = 0;
2092 add_prefix (&exec_prefix
, nstore
, 0, 0, NULL_PTR
);
2095 endp
= startp
= endp
+ 1;
2102 temp
= getenv ("LIBRARY_PATH");
2105 char *startp
, *endp
;
2106 char *nstore
= (char *) alloca (strlen (temp
) + 3);
2108 startp
= endp
= temp
;
2111 if (*endp
== PATH_SEPARATOR
|| *endp
== 0)
2113 strncpy (nstore
, startp
, endp
-startp
);
2116 strcpy (nstore
, "./");
2118 else if (endp
[-1] != '/')
2120 nstore
[endp
-startp
] = '/';
2121 nstore
[endp
-startp
+1] = 0;
2124 nstore
[endp
-startp
] = 0;
2125 add_prefix (&startfile_prefix
, nstore
, 0, 0, NULL_PTR
);
2128 endp
= startp
= endp
+ 1;
2135 /* Use LPATH like LIBRARY_PATH (for the CMU build program). */
2136 temp
= getenv ("LPATH");
2139 char *startp
, *endp
;
2140 char *nstore
= (char *) alloca (strlen (temp
) + 3);
2142 startp
= endp
= temp
;
2145 if (*endp
== PATH_SEPARATOR
|| *endp
== 0)
2147 strncpy (nstore
, startp
, endp
-startp
);
2150 strcpy (nstore
, "./");
2152 else if (endp
[-1] != '/')
2154 nstore
[endp
-startp
] = '/';
2155 nstore
[endp
-startp
+1] = 0;
2158 nstore
[endp
-startp
] = 0;
2159 add_prefix (&startfile_prefix
, nstore
, 0, 0, NULL_PTR
);
2162 endp
= startp
= endp
+ 1;
2169 /* Convert new-style -- options to old-style. */
2170 translate_options (&argc
, &argv
);
2172 /* Scan argv twice. Here, the first time, just count how many switches
2173 there will be in their vector, and how many input files in theirs.
2174 Here we also parse the switches that cc itself uses (e.g. -v). */
2176 for (i
= 1; i
< argc
; i
++)
2178 if (! strcmp (argv
[i
], "-dumpspecs"))
2180 printf ("*asm:\n%s\n\n", asm_spec
);
2181 printf ("*asm_final:\n%s\n\n", asm_final_spec
);
2182 printf ("*cpp:\n%s\n\n", cpp_spec
);
2183 printf ("*cc1:\n%s\n\n", cc1_spec
);
2184 printf ("*cc1plus:\n%s\n\n", cc1plus_spec
);
2185 printf ("*endfile:\n%s\n\n", endfile_spec
);
2186 printf ("*link:\n%s\n\n", link_spec
);
2187 printf ("*lib:\n%s\n\n", lib_spec
);
2188 printf ("*startfile:\n%s\n\n", startfile_spec
);
2189 printf ("*switches_need_spaces:\n%s\n\n", switches_need_spaces
);
2190 printf ("*signed_char:\n%s\n\n", signed_char_spec
);
2191 printf ("*predefines:\n%s\n\n", cpp_predefines
);
2192 printf ("*cross_compile:\n%d\n\n", cross_compile
);
2196 else if (! strcmp (argv
[i
], "-dumpversion"))
2198 printf ("%s\n", version_string
);
2201 else if (! strcmp (argv
[i
], "-print-libgcc-file-name"))
2203 print_libgcc_file_name
= 1;
2205 else if (! strcmp (argv
[i
], "-Xlinker"))
2207 /* Pass the argument of this option to the linker when we link. */
2210 fatal ("argument to `-Xlinker' is missing");
2213 if (!linker_options
)
2215 = (char **) xmalloc (n_linker_options
* sizeof (char **));
2218 = (char **) xrealloc (linker_options
,
2219 n_linker_options
* sizeof (char **));
2221 linker_options
[n_linker_options
- 1] = argv
[++i
];
2223 else if (! strncmp (argv
[i
], "-Wl,", 4))
2226 /* Pass the rest of this option to the linker when we link. */
2229 if (!linker_options
)
2231 = (char **) xmalloc (n_linker_options
* sizeof (char **));
2234 = (char **) xrealloc (linker_options
,
2235 n_linker_options
* sizeof (char **));
2237 /* Split the argument at commas. */
2239 for (j
= 4; argv
[i
][j
]; j
++)
2240 if (argv
[i
][j
] == ',')
2242 linker_options
[n_linker_options
- 1]
2243 = save_string (argv
[i
] + prev
, j
- prev
);
2246 = (char **) xrealloc (linker_options
,
2247 n_linker_options
* sizeof (char **));
2250 /* Record the part after the last comma. */
2251 linker_options
[n_linker_options
- 1] = argv
[i
] + prev
;
2253 else if (! strncmp (argv
[i
], "-Wa,", 4))
2256 /* Pass the rest of this option to the assembler. */
2258 n_assembler_options
++;
2259 if (!assembler_options
)
2261 = (char **) xmalloc (n_assembler_options
* sizeof (char **));
2264 = (char **) xrealloc (assembler_options
,
2265 n_assembler_options
* sizeof (char **));
2267 /* Split the argument at commas. */
2269 for (j
= 4; argv
[i
][j
]; j
++)
2270 if (argv
[i
][j
] == ',')
2272 assembler_options
[n_assembler_options
- 1]
2273 = save_string (argv
[i
] + prev
, j
- prev
);
2274 n_assembler_options
++;
2276 = (char **) xrealloc (assembler_options
,
2277 n_assembler_options
* sizeof (char **));
2280 /* Record the part after the last comma. */
2281 assembler_options
[n_assembler_options
- 1] = argv
[i
] + prev
;
2283 else if (argv
[i
][0] == '+' && argv
[i
][1] == 'e')
2284 /* The +e options to the C++ front-end. */
2286 else if (argv
[i
][0] == '-' && argv
[i
][1] != 0 && argv
[i
][1] != 'l')
2288 register char *p
= &argv
[i
][1];
2289 register int c
= *p
;
2294 if (p
[1] == 0 && i
+ 1 == argc
)
2295 fatal ("argument to `-b' is missing");
2297 spec_machine
= argv
[++i
];
2299 spec_machine
= p
+ 1;
2304 int *temp
= (int *) xmalloc (sizeof (int));
2306 if (p
[1] == 0 && i
+ 1 == argc
)
2307 fatal ("argument to `-B' is missing");
2312 add_prefix (&exec_prefix
, value
, 1, 0, temp
);
2313 add_prefix (&startfile_prefix
, value
, 1, 0, temp
);
2317 case 'v': /* Print our subcommands and print versions. */
2319 /* If they do anything other than exactly `-v', don't set
2320 verbose_flag; rather, continue on to give the error. */
2327 if (p
[1] == 0 && i
+ 1 == argc
)
2328 fatal ("argument to `-V' is missing");
2330 spec_version
= argv
[++i
];
2332 spec_version
= p
+ 1;
2336 if (!strcmp (p
, "save-temps"))
2338 save_temps_flag
= 1;
2345 if (SWITCH_TAKES_ARG (c
) > (p
[1] != 0))
2346 i
+= SWITCH_TAKES_ARG (c
) - (p
[1] != 0);
2347 else if (WORD_SWITCH_TAKES_ARG (p
))
2348 i
+= WORD_SWITCH_TAKES_ARG (p
);
2355 tooldir_prefix
= concat (tooldir_base_prefix
, spec_machine
, "/");
2357 /* If tooldir is relative, base it on exec_prefix. A relative
2358 tooldir lets us move the installed tree as a unit. */
2360 if (*tooldir_prefix
!= '/')
2362 if (gcc_exec_prefix
)
2363 tooldir_prefix
= concat (concat (gcc_exec_prefix
, spec_machine
, "/"),
2364 concat (spec_version
, "/", tooldir_prefix
),
2367 tooldir_prefix
= concat (concat (standard_exec_prefix
, spec_machine
, "/"),
2368 concat (spec_version
, "/", tooldir_prefix
),
2373 /* Set up the search paths before we go looking for config files. */
2375 /* These come before the md prefixes so that we will find gcc's subcommands
2376 (such as cpp) rather than those of the host system. */
2377 /* Use 2 as fourth arg meaning try just the machine as a suffix,
2378 as well as trying the machine and the version. */
2379 add_prefix (&exec_prefix
, standard_exec_prefix
, 0, 2, NULL_PTR
);
2380 add_prefix (&exec_prefix
, standard_exec_prefix_1
, 0, 2, NULL_PTR
);
2382 add_prefix (&startfile_prefix
, standard_exec_prefix
, 0, 1, NULL_PTR
);
2383 add_prefix (&startfile_prefix
, standard_exec_prefix_1
, 0, 1, NULL_PTR
);
2385 add_prefix (&exec_prefix
, concat (tooldir_prefix
, "bin", "/"),
2387 add_prefix (&startfile_prefix
, concat (tooldir_prefix
, "lib", "/"),
2390 /* More prefixes are enabled in main, after we read the specs file
2391 and determine whether this is cross-compilation or not. */
2394 /* Then create the space for the vectors and scan again. */
2396 switches
= ((struct switchstr
*)
2397 xmalloc ((n_switches
+ 1) * sizeof (struct switchstr
)));
2398 infiles
= (struct infile
*) xmalloc ((n_infiles
+ 1) * sizeof (struct infile
));
2401 last_language_n_infiles
= -1;
2403 /* This, time, copy the text of each switch and store a pointer
2404 to the copy in the vector of switches.
2405 Store all the infiles in their vector. */
2407 for (i
= 1; i
< argc
; i
++)
2409 /* Just skip the switches that were handled by the preceding loop. */
2410 if (!strcmp (argv
[i
], "-Xlinker"))
2412 else if (! strncmp (argv
[i
], "-Wl,", 4))
2414 else if (! strncmp (argv
[i
], "-Wa,", 4))
2416 else if (! strcmp (argv
[i
], "-print-libgcc-file-name"))
2418 else if (argv
[i
][0] == '+' && argv
[i
][1] == 'e')
2420 /* Compensate for the +e options to the C++ front-end;
2421 they're there simply for cfront call-compatibility. We do
2422 some magic in default_compilers to pass them down properly.
2423 Note we deliberately start at the `+' here, to avoid passing
2424 -e0 or -e1 down into the linker. */
2425 switches
[n_switches
].part1
= &argv
[i
][0];
2426 switches
[n_switches
].args
= 0;
2427 switches
[n_switches
].valid
= 0;
2430 else if (argv
[i
][0] == '-' && argv
[i
][1] != 0 && argv
[i
][1] != 'l')
2432 register char *p
= &argv
[i
][1];
2433 register int c
= *p
;
2435 if (c
== 'B' || c
== 'b' || c
== 'V')
2437 /* Skip a separate arg, if any. */
2444 if (p
[1] == 0 && i
+ 1 == argc
)
2445 fatal ("argument to `-x' is missing");
2447 spec_lang
= argv
[++i
];
2450 if (! strcmp (spec_lang
, "none"))
2451 /* Suppress the warning if -xnone comes after the last input file,
2452 because alternate command interfaces like g++ might find it
2453 useful to place -xnone after each input file. */
2456 last_language_n_infiles
= n_infiles
;
2459 switches
[n_switches
].part1
= p
;
2460 /* Deal with option arguments in separate argv elements. */
2461 if ((SWITCH_TAKES_ARG (c
) > (p
[1] != 0))
2462 || WORD_SWITCH_TAKES_ARG (p
)) {
2464 int n_args
= WORD_SWITCH_TAKES_ARG (p
);
2467 /* Count only the option arguments in separate argv elements. */
2468 n_args
= SWITCH_TAKES_ARG (c
) - (p
[1] != 0);
2470 if (i
+ n_args
>= argc
)
2471 fatal ("argument to `-%s' is missing", p
);
2472 switches
[n_switches
].args
2473 = (char **) xmalloc ((n_args
+ 1) * sizeof (char *));
2475 switches
[n_switches
].args
[j
++] = argv
[++i
];
2476 /* Null-terminate the vector. */
2477 switches
[n_switches
].args
[j
] = 0;
2478 } else if (*switches_need_spaces
!= 0 && (c
== 'o' || c
== 'L')) {
2479 /* On some systems, ld cannot handle -o or -L without space.
2480 So split the -o or -L from its argument. */
2481 switches
[n_switches
].part1
= (c
== 'o' ? "o" : "L");
2482 switches
[n_switches
].args
= (char **) xmalloc (2 * sizeof (char *));
2483 switches
[n_switches
].args
[0] = xmalloc (strlen (p
));
2484 strcpy (switches
[n_switches
].args
[0], &p
[1]);
2485 switches
[n_switches
].args
[1] = 0;
2487 switches
[n_switches
].args
= 0;
2488 switches
[n_switches
].valid
= 0;
2489 /* This is always valid, since gcc.c itself understands it. */
2490 if (!strcmp (p
, "save-temps"))
2491 switches
[n_switches
].valid
= 1;
2496 if ((argv
[i
][0] != '-' || argv
[i
][1] != 'l')
2497 && access (argv
[i
], R_OK
) < 0)
2499 perror_with_name (argv
[i
]);
2504 infiles
[n_infiles
].language
= spec_lang
;
2505 infiles
[n_infiles
++].name
= argv
[i
];
2510 if (n_infiles
== last_language_n_infiles
)
2511 error ("Warning: `-x %s' after last input file has no effect", spec_lang
);
2513 switches
[n_switches
].part1
= 0;
2514 infiles
[n_infiles
].name
= 0;
2516 /* If we have a GCC_EXEC_PREFIX envvar, modify it for cpp's sake. */
2517 if (gcc_exec_prefix
)
2519 temp
= (char *) xmalloc (strlen (gcc_exec_prefix
) + strlen (spec_version
)
2520 + strlen (spec_machine
) + 3);
2521 strcpy (temp
, gcc_exec_prefix
);
2522 strcat (temp
, spec_machine
);
2524 strcat (temp
, spec_version
);
2526 gcc_exec_prefix
= temp
;
2530 /* Process a spec string, accumulating and running commands. */
2532 /* These variables describe the input file name.
2533 input_file_number is the index on outfiles of this file,
2534 so that the output file name can be stored for later use by %o.
2535 input_basename is the start of the part of the input file
2536 sans all directory names, and basename_length is the number
2537 of characters starting there excluding the suffix .c or whatever. */
2539 static char *input_filename
;
2540 static int input_file_number
;
2541 static int input_filename_length
;
2542 static int basename_length
;
2543 static char *input_basename
;
2544 static char *input_suffix
;
2546 /* These are variables used within do_spec and do_spec_1. */
2548 /* Nonzero if an arg has been started and not yet terminated
2549 (with space, tab or newline). */
2550 static int arg_going
;
2552 /* Nonzero means %d or %g has been seen; the next arg to be terminated
2553 is a temporary file name. */
2554 static int delete_this_arg
;
2556 /* Nonzero means %w has been seen; the next arg to be terminated
2557 is the output file name of this compilation. */
2558 static int this_is_output_file
;
2560 /* Nonzero means %s has been seen; the next arg to be terminated
2561 is the name of a library file and we should try the standard
2562 search dirs for it. */
2563 static int this_is_library_file
;
2565 /* Nonzero means that the input of this command is coming from a pipe. */
2566 static int input_from_pipe
;
2568 /* Process the spec SPEC and run the commands specified therein.
2569 Returns 0 if the spec is successfully processed; -1 if failed. */
2579 delete_this_arg
= 0;
2580 this_is_output_file
= 0;
2581 this_is_library_file
= 0;
2582 input_from_pipe
= 0;
2584 value
= do_spec_1 (spec
, 0, NULL_PTR
);
2586 /* Force out any unfinished command.
2587 If -pipe, this forces out the last command if it ended in `|'. */
2590 if (argbuf_index
> 0 && !strcmp (argbuf
[argbuf_index
- 1], "|"))
2593 if (argbuf_index
> 0)
2600 /* Process the sub-spec SPEC as a portion of a larger spec.
2601 This is like processing a whole spec except that we do
2602 not initialize at the beginning and we do not supply a
2603 newline by default at the end.
2604 INSWITCH nonzero means don't process %-sequences in SPEC;
2605 in this case, % is treated as an ordinary character.
2606 This is used while substituting switches.
2607 INSWITCH nonzero also causes SPC not to terminate an argument.
2609 Value is zero unless a line was finished
2610 and the command on that line reported an error. */
2613 do_spec_1 (spec
, inswitch
, soft_matched_part
)
2616 char *soft_matched_part
;
2618 register char *p
= spec
;
2625 /* If substituting a switch, treat all chars like letters.
2626 Otherwise, NL, SPC, TAB and % are special. */
2627 switch (inswitch
? 'a' : c
)
2630 /* End of line: finish any pending argument,
2631 then run the pending command if one has been started. */
2634 obstack_1grow (&obstack
, 0);
2635 string
= obstack_finish (&obstack
);
2636 if (this_is_library_file
)
2637 string
= find_file (string
);
2638 store_arg (string
, delete_this_arg
, this_is_output_file
);
2639 if (this_is_output_file
)
2640 outfiles
[input_file_number
] = string
;
2644 if (argbuf_index
> 0 && !strcmp (argbuf
[argbuf_index
- 1], "|"))
2647 for (i
= 0; i
< n_switches
; i
++)
2648 if (!strcmp (switches
[i
].part1
, "pipe"))
2651 /* A `|' before the newline means use a pipe here,
2652 but only if -pipe was specified.
2653 Otherwise, execute now and don't pass the `|' as an arg. */
2656 input_from_pipe
= 1;
2657 switches
[i
].valid
= 1;
2664 if (argbuf_index
> 0)
2670 /* Reinitialize for a new command, and for a new argument. */
2673 delete_this_arg
= 0;
2674 this_is_output_file
= 0;
2675 this_is_library_file
= 0;
2676 input_from_pipe
= 0;
2680 /* End any pending argument. */
2683 obstack_1grow (&obstack
, 0);
2684 string
= obstack_finish (&obstack
);
2685 if (this_is_library_file
)
2686 string
= find_file (string
);
2687 store_arg (string
, delete_this_arg
, this_is_output_file
);
2688 if (this_is_output_file
)
2689 outfiles
[input_file_number
] = string
;
2693 obstack_1grow (&obstack
, c
);
2699 /* Space or tab ends an argument if one is pending. */
2702 obstack_1grow (&obstack
, 0);
2703 string
= obstack_finish (&obstack
);
2704 if (this_is_library_file
)
2705 string
= find_file (string
);
2706 store_arg (string
, delete_this_arg
, this_is_output_file
);
2707 if (this_is_output_file
)
2708 outfiles
[input_file_number
] = string
;
2710 /* Reinitialize for a new argument. */
2712 delete_this_arg
= 0;
2713 this_is_output_file
= 0;
2714 this_is_library_file
= 0;
2721 fatal ("Invalid specification! Bug in cc.");
2724 obstack_grow (&obstack
, input_basename
, basename_length
);
2729 delete_this_arg
= 2;
2732 /* Dump out the directories specified with LIBRARY_PATH,
2733 followed by the absolute directories
2734 that we search for startfiles. */
2737 struct prefix_list
*pl
= startfile_prefix
.plist
;
2739 char *buffer
= (char *) xmalloc (bufsize
);
2742 for (; pl
; pl
= pl
->next
)
2744 #ifdef RELATIVE_PREFIX_NOT_LINKDIR
2745 /* Used on systems which record the specified -L dirs
2746 and use them to search for dynamic linking. */
2747 /* Relative directories always come from -B,
2748 and it is better not to use them for searching
2749 at run time. In particular, stage1 loses */
2750 if (pl
->prefix
[0] != '/')
2755 if (is_directory (pl
->prefix
, machine_suffix
, 1))
2757 do_spec_1 ("-L", 0, NULL_PTR
);
2758 #ifdef SPACE_AFTER_L_OPTION
2759 do_spec_1 (" ", 0, NULL_PTR
);
2761 do_spec_1 (pl
->prefix
, 1, NULL_PTR
);
2762 /* Remove slash from machine_suffix. */
2763 if (strlen (machine_suffix
) >= bufsize
)
2764 bufsize
= strlen (machine_suffix
) * 2 + 1;
2765 buffer
= (char *) xrealloc (buffer
, bufsize
);
2766 strcpy (buffer
, machine_suffix
);
2767 idx
= strlen (buffer
);
2768 if (buffer
[idx
- 1] == '/')
2769 buffer
[idx
- 1] = 0;
2770 do_spec_1 (buffer
, 1, NULL_PTR
);
2771 /* Make this a separate argument. */
2772 do_spec_1 (" ", 0, NULL_PTR
);
2775 if (!pl
->require_machine_suffix
)
2777 if (is_directory (pl
->prefix
, "", 1))
2779 do_spec_1 ("-L", 0, NULL_PTR
);
2780 #ifdef SPACE_AFTER_L_OPTION
2781 do_spec_1 (" ", 0, NULL_PTR
);
2783 /* Remove slash from pl->prefix. */
2784 if (strlen (pl
->prefix
) >= bufsize
)
2785 bufsize
= strlen (pl
->prefix
) * 2 + 1;
2786 buffer
= (char *) xrealloc (buffer
, bufsize
);
2787 strcpy (buffer
, pl
->prefix
);
2788 idx
= strlen (buffer
);
2789 if (buffer
[idx
- 1] == '/')
2790 buffer
[idx
- 1] = 0;
2791 do_spec_1 (buffer
, 1, NULL_PTR
);
2792 /* Make this a separate argument. */
2793 do_spec_1 (" ", 0, NULL_PTR
);
2802 /* {...:%efoo} means report an error with `foo' as error message
2803 and don't execute any more commands for this file. */
2807 while (*p
!= 0 && *p
!= '\n') p
++;
2808 buf
= (char *) alloca (p
- q
+ 1);
2809 strncpy (buf
, q
, p
- q
);
2819 if (save_temps_flag
)
2820 obstack_grow (&obstack
, input_basename
, basename_length
);
2823 #ifdef MKTEMP_EACH_FILE
2824 /* ??? This has a problem: the total number of
2825 values mktemp can return is limited.
2826 That matters for the names of object files.
2827 In 2.4, do something about that. */
2828 struct temp_name
*t
;
2830 while (*p
== '.' || isalpha (*p
))
2833 /* See if we already have an association of %g/%u/%U and
2835 for (t
= temp_names
; t
; t
= t
->next
)
2836 if (t
->length
== p
- suffix
2837 && strncmp (t
->suffix
, suffix
, p
- suffix
) == 0
2838 && t
->unique
== (c
!= 'g'))
2841 /* Make a new association if needed. %u requires one. */
2842 if (t
== 0 || c
== 'u')
2846 t
= (struct temp_name
*) xmalloc (sizeof (struct temp_name
));
2847 t
->next
= temp_names
;
2850 t
->length
= p
- suffix
;
2851 t
->suffix
= save_string (suffix
, p
- suffix
);
2852 t
->unique
= (c
!= 'g');
2853 choose_temp_base ();
2854 t
->filename
= temp_filename
;
2855 t
->filename_length
= temp_filename_length
;
2858 obstack_grow (&obstack
, t
->filename
, t
->filename_length
);
2859 delete_this_arg
= 1;
2861 obstack_grow (&obstack
, temp_filename
, temp_filename_length
);
2862 if (c
== 'u' || c
== 'U')
2868 sprintf (buff
, "%d", unique
);
2869 obstack_grow (&obstack
, buff
, strlen (buff
));
2872 delete_this_arg
= 1;
2878 obstack_grow (&obstack
, input_filename
, input_filename_length
);
2883 if (gcc_exec_prefix
)
2885 do_spec_1 ("-iprefix", 1, NULL_PTR
);
2886 /* Make this a separate argument. */
2887 do_spec_1 (" ", 0, NULL_PTR
);
2888 do_spec_1 (gcc_exec_prefix
, 1, NULL_PTR
);
2889 do_spec_1 (" ", 0, NULL_PTR
);
2896 for (f
= 0; f
< n_infiles
; f
++)
2897 store_arg (outfiles
[f
], 0, 0);
2902 this_is_library_file
= 1;
2906 this_is_output_file
= 1;
2911 int index
= argbuf_index
;
2912 /* Handle the {...} following the %W. */
2915 p
= handle_braces (p
+ 1);
2918 /* If any args were output, mark the last one for deletion
2920 if (argbuf_index
!= index
)
2921 record_temp_file (argbuf
[argbuf_index
- 1], 0, 1);
2925 /* %x{OPTION} records OPTION for %X to output. */
2931 /* Skip past the option value and make a copy. */
2936 string
= save_string (p1
+ 1, p
- p1
- 2);
2938 /* See if we already recorded this option. */
2939 for (i
= 0; i
< n_linker_options
; i
++)
2940 if (! strcmp (string
, linker_options
[i
]))
2946 /* This option is new; add it. */
2948 if (!linker_options
)
2950 = (char **) xmalloc (n_linker_options
* sizeof (char **));
2953 = (char **) xrealloc (linker_options
,
2954 n_linker_options
* sizeof (char **));
2956 linker_options
[n_linker_options
- 1] = string
;
2960 /* Dump out the options accumulated previously using %x,
2961 -Xlinker and -Wl,. */
2963 for (i
= 0; i
< n_linker_options
; i
++)
2965 do_spec_1 (linker_options
[i
], 1, NULL_PTR
);
2966 /* Make each accumulated option a separate argument. */
2967 do_spec_1 (" ", 0, NULL_PTR
);
2971 /* Dump out the options accumulated previously using -Wa,. */
2973 for (i
= 0; i
< n_assembler_options
; i
++)
2975 do_spec_1 (assembler_options
[i
], 1, NULL_PTR
);
2976 /* Make each accumulated option a separate argument. */
2977 do_spec_1 (" ", 0, NULL_PTR
);
2981 /* Here are digits and numbers that just process
2982 a certain constant string as a spec. */
2985 value
= do_spec_1 (cc1_spec
, 0, NULL_PTR
);
2991 value
= do_spec_1 (cc1plus_spec
, 0, NULL_PTR
);
2997 value
= do_spec_1 (asm_spec
, 0, NULL_PTR
);
3003 value
= do_spec_1 (asm_final_spec
, 0, NULL_PTR
);
3009 value
= do_spec_1 (signed_char_spec
, 0, NULL_PTR
);
3015 value
= do_spec_1 (cpp_spec
, 0, NULL_PTR
);
3021 value
= do_spec_1 (endfile_spec
, 0, NULL_PTR
);
3027 value
= do_spec_1 (link_spec
, 0, NULL_PTR
);
3033 value
= do_spec_1 (lib_spec
, 0, NULL_PTR
);
3040 char *x
= (char *) alloca (strlen (cpp_predefines
) + 1);
3044 /* Copy all of the -D options in CPP_PREDEFINES into BUF. */
3048 if (! strncmp (y
, "-D", 2))
3049 /* Copy the whole option. */
3050 while (*y
&& *y
!= ' ' && *y
!= '\t')
3052 else if (*y
== ' ' || *y
== '\t')
3053 /* Copy whitespace to the result. */
3055 /* Don't copy other options. */
3062 value
= do_spec_1 (buf
, 0, NULL_PTR
);
3070 char *x
= (char *) alloca (strlen (cpp_predefines
) * 4 + 1);
3074 /* Copy all of CPP_PREDEFINES into BUF,
3075 but put __ after every -D and at the end of each arg. */
3079 if (! strncmp (y
, "-D", 2))
3086 if (strncmp (y
, "__", 2))
3088 /* Stick __ at front of macro name. */
3091 /* Arrange to stick __ at the end as well. */
3095 /* Copy the macro name. */
3096 while (*y
&& *y
!= '=' && *y
!= ' ' && *y
!= '\t')
3105 /* Copy the value given, if any. */
3106 while (*y
&& *y
!= ' ' && *y
!= '\t')
3109 else if (*y
== ' ' || *y
== '\t')
3110 /* Copy whitespace to the result. */
3112 /* Don't copy -A options */
3118 /* Copy all of CPP_PREDEFINES into BUF,
3119 but put __ after every -D. */
3123 if (! strncmp (y
, "-D", 2))
3128 if (strncmp (y
, "__", 2))
3130 /* Stick __ at front of macro name. */
3135 /* Copy the macro name. */
3136 while (*y
&& *y
!= '=' && *y
!= ' ' && *y
!= '\t')
3139 /* Copy the value given, if any. */
3140 while (*y
&& *y
!= ' ' && *y
!= '\t')
3143 else if (*y
== ' ' || *y
== '\t')
3144 /* Copy whitespace to the result. */
3146 /* Don't copy -A options */
3152 /* Copy all of the -A options in CPP_PREDEFINES into BUF. */
3156 if (! strncmp (y
, "-A", 2))
3157 /* Copy the whole option. */
3158 while (*y
&& *y
!= ' ' && *y
!= '\t')
3160 else if (*y
== ' ' || *y
== '\t')
3161 /* Copy whitespace to the result. */
3163 /* Don't copy other options. */
3170 value
= do_spec_1 (buf
, 0, NULL_PTR
);
3177 value
= do_spec_1 (startfile_spec
, 0, NULL_PTR
);
3182 /* Here we define characters other than letters and digits. */
3185 p
= handle_braces (p
);
3191 obstack_1grow (&obstack
, '%');
3195 do_spec_1 (soft_matched_part
, 1, NULL_PTR
);
3196 do_spec_1 (" ", 0, NULL_PTR
);
3199 /* Process a string found as the value of a spec given by name.
3200 This feature allows individual machine descriptions
3201 to add and use their own specs.
3202 %[...] modifies -D options the way %P does;
3203 %(...) uses the spec unmodified. */
3208 struct spec_list
*sl
;
3211 /* The string after the S/P is the name of a spec that is to be
3213 while (*p
&& *p
!= ')' && *p
!= ']')
3216 /* See if it's in the list */
3217 for (len
= p
- name
, sl
= specs
; sl
; sl
= sl
->next
)
3218 if (strncmp (sl
->name
, name
, len
) == 0 && !sl
->name
[len
])
3228 value
= do_spec_1 (name
, 0, NULL_PTR
);
3234 char *x
= (char *) alloca (strlen (name
) * 2 + 1);
3238 /* Copy all of NAME into BUF, but put __ after
3239 every -D and at the end of each arg, */
3242 if (! strncmp (y
, "-D", 2))
3250 else if (*y
== ' ' || *y
== 0)
3264 value
= do_spec_1 (buf
, 0, NULL_PTR
);
3270 /* Discard the closing paren or bracket. */
3277 if (input_from_pipe
)
3278 do_spec_1 ("-", 0, NULL_PTR
);
3287 /* Backslash: treat next character as ordinary. */
3292 /* Ordinary character: put it into the current argument. */
3293 obstack_1grow (&obstack
, c
);
3297 return 0; /* End of string */
3300 /* Return 0 if we call do_spec_1 and that returns -1. */
3313 /* A `|' after the open-brace means,
3314 if the test fails, output a single minus sign rather than nothing.
3315 This is used in %{|!pipe:...}. */
3319 /* A `!' after the open-brace negates the condition:
3320 succeed if the specified switch is not present. */
3324 /* A `.' after the open-brace means test against the current suffix. */
3334 while (*p
!= ':' && *p
!= '}') p
++;
3337 register int count
= 1;
3355 int found
= (input_suffix
!= 0
3356 && strlen (input_suffix
) == p
- filter
3357 && strncmp (input_suffix
, filter
, p
- filter
) == 0);
3363 && do_spec_1 (save_string (p
+ 1, q
- p
- 2), 0, NULL_PTR
) < 0)
3368 else if (p
[-1] == '*' && p
[0] == '}')
3370 /* Substitute all matching switches as separate args. */
3373 for (i
= 0; i
< n_switches
; i
++)
3374 if (!strncmp (switches
[i
].part1
, filter
, p
- filter
))
3379 /* Test for presence of the specified switch. */
3383 /* If name specified ends in *, as in {x*:...},
3384 check for %* and handle that case. */
3385 if (p
[-1] == '*' && !negate
)
3390 /* First see whether we have %*. */
3394 if (*r
== '%' && r
[1] == '*')
3398 /* If we do, handle that case. */
3401 /* Substitute all matching switches as separate args.
3402 But do this by substituting for %*
3403 in the text that follows the colon. */
3405 unsigned hard_match_len
= p
- filter
- 1;
3406 char *string
= save_string (p
+ 1, q
- p
- 2);
3408 for (i
= 0; i
< n_switches
; i
++)
3409 if (!strncmp (switches
[i
].part1
, filter
, hard_match_len
))
3411 do_spec_1 (string
, 0, &switches
[i
].part1
[hard_match_len
]);
3412 /* Pass any arguments this switch has. */
3420 /* If name specified ends in *, as in {x*:...},
3421 check for presence of any switch name starting with x. */
3424 for (i
= 0; i
< n_switches
; i
++)
3426 unsigned hard_match_len
= p
- filter
- 1;
3428 if (!strncmp (switches
[i
].part1
, filter
, hard_match_len
))
3430 switches
[i
].valid
= 1;
3435 /* Otherwise, check for presence of exact name specified. */
3438 for (i
= 0; i
< n_switches
; i
++)
3440 if (!strncmp (switches
[i
].part1
, filter
, p
- filter
)
3441 && switches
[i
].part1
[p
- filter
] == 0)
3443 switches
[i
].valid
= 1;
3450 /* If it is as desired (present for %{s...}, absent for %{-s...})
3451 then substitute either the switch or the specified
3452 conditional text. */
3453 if (present
!= negate
)
3461 if (do_spec_1 (save_string (p
+ 1, q
- p
- 2), 0, NULL_PTR
) < 0)
3467 /* Here if a %{|...} conditional fails: output a minus sign,
3468 which means "standard output" or "standard input". */
3469 do_spec_1 ("-", 0, NULL_PTR
);
3476 /* Pass a switch to the current accumulating command
3477 in the same form that we received it.
3478 SWITCHNUM identifies the switch; it is an index into
3479 the vector of switches gcc received, which is `switches'.
3480 This cannot fail since it never finishes a command line.
3482 If OMIT_FIRST_WORD is nonzero, then we omit .part1 of the argument. */
3485 give_switch (switchnum
, omit_first_word
)
3487 int omit_first_word
;
3489 if (!omit_first_word
)
3491 do_spec_1 ("-", 0, NULL_PTR
);
3492 do_spec_1 (switches
[switchnum
].part1
, 1, NULL_PTR
);
3494 do_spec_1 (" ", 0, NULL_PTR
);
3495 if (switches
[switchnum
].args
!= 0)
3498 for (p
= switches
[switchnum
].args
; *p
; p
++)
3500 do_spec_1 (*p
, 1, NULL_PTR
);
3501 do_spec_1 (" ", 0, NULL_PTR
);
3504 switches
[switchnum
].valid
= 1;
3507 /* Search for a file named NAME trying various prefixes including the
3508 user's -B prefix and some standard ones.
3509 Return the absolute file name found. If nothing is found, return NAME. */
3517 newname
= find_a_file (&startfile_prefix
, name
, R_OK
);
3518 return newname
? newname
: name
;
3521 /* Determine whether a directory exists. If LINKER, return 0 for
3522 certain fixed names not needed by the linker. If not LINKER, it is
3523 only important to return 0 if the host machine has a small ARG_MAX
3527 is_directory (path1
, path2
, linker
)
3532 int len1
= strlen (path1
);
3533 int len2
= strlen (path2
);
3534 char *path
= (char *) alloca (3 + len1
+ len2
);
3538 #ifndef SMALL_ARG_MAX
3543 /* Construct the path from the two parts. Ensure the string ends with "/.".
3544 The resulting path will be a directory even if the given path is a
3546 bcopy (path1
, path
, len1
);
3547 bcopy (path2
, path
+ len1
, len2
);
3548 cp
= path
+ len1
+ len2
;
3554 /* Exclude directories that the linker is known to search. */
3556 && ((cp
- path
== 6 && strcmp (path
, "/lib/.") == 0)
3557 || (cp
- path
== 10 && strcmp (path
, "/usr/lib/.") == 0)))
3560 return (stat (path
, &st
) >= 0 && S_ISDIR (st
.st_mode
));
3563 /* On fatal signals, delete all the temporary files. */
3566 fatal_error (signum
)
3569 signal (signum
, SIG_DFL
);
3570 delete_failure_queue ();
3571 delete_temp_files ();
3572 /* Get the same signal again, this time not handled,
3573 so its normal effect occurs. */
3574 kill (getpid (), signum
);
3585 int linker_was_run
= 0;
3586 char *explicit_link_files
;
3590 p
= argv
[0] + strlen (argv
[0]);
3591 while (p
!= argv
[0] && p
[-1] != '/') --p
;
3594 if (signal (SIGINT
, SIG_IGN
) != SIG_IGN
)
3595 signal (SIGINT
, fatal_error
);
3597 if (signal (SIGHUP
, SIG_IGN
) != SIG_IGN
)
3598 signal (SIGHUP
, fatal_error
);
3600 if (signal (SIGTERM
, SIG_IGN
) != SIG_IGN
)
3601 signal (SIGTERM
, fatal_error
);
3603 if (signal (SIGPIPE
, SIG_IGN
) != SIG_IGN
)
3604 signal (SIGPIPE
, fatal_error
);
3608 argbuf
= (char **) xmalloc (argbuf_length
* sizeof (char *));
3610 obstack_init (&obstack
);
3612 /* Set up to remember the pathname of gcc and any options
3613 needed for collect. We use argv[0] instead of programname because
3614 we need the complete pathname. */
3615 obstack_init (&collect_obstack
);
3616 obstack_grow (&collect_obstack
, "COLLECT_GCC=", sizeof ("COLLECT_GCC=")-1);
3617 obstack_grow (&collect_obstack
, argv
[0], strlen (argv
[0])+1);
3618 putenv (obstack_finish (&collect_obstack
));
3620 /* Choose directory for temp files. */
3622 choose_temp_base ();
3624 /* Make a table of what switches there are (switches, n_switches).
3625 Make a table of specified input files (infiles, n_infiles).
3626 Decode switches that are handled locally. */
3628 process_command (argc
, argv
);
3630 /* Initialize the vector of specs to just the default.
3631 This means one element containing 0s, as a terminator. */
3633 compilers
= (struct compiler
*) xmalloc (sizeof default_compilers
);
3634 bcopy (default_compilers
, compilers
, sizeof default_compilers
);
3635 n_compilers
= n_default_compilers
;
3637 /* Read specs from a file if there is one. */
3639 machine_suffix
= concat (spec_machine
, "/", concat (spec_version
, "/", ""));
3640 just_machine_suffix
= concat (spec_machine
, "/", "");
3642 specs_file
= find_a_file (&startfile_prefix
, "specs", R_OK
);
3643 /* Read the specs file unless it is a default one. */
3644 if (specs_file
!= 0 && strcmp (specs_file
, "specs"))
3645 read_specs (specs_file
);
3647 /* If not cross-compiling, look for startfiles in the standard places. */
3648 /* The fact that these are done here, after reading the specs file,
3649 means that it cannot be found in these directories.
3650 But that's okay. It should never be there anyway. */
3653 #ifdef MD_EXEC_PREFIX
3654 add_prefix (&exec_prefix
, md_exec_prefix
, 0, 0, NULL_PTR
);
3655 add_prefix (&startfile_prefix
, md_exec_prefix
, 0, 0, NULL_PTR
);
3658 #ifdef MD_STARTFILE_PREFIX
3659 add_prefix (&startfile_prefix
, md_startfile_prefix
, 0, 0, NULL_PTR
);
3662 #ifdef MD_STARTFILE_PREFIX_1
3663 add_prefix (&startfile_prefix
, md_startfile_prefix_1
, 0, 0, NULL_PTR
);
3666 add_prefix (&startfile_prefix
, standard_startfile_prefix
, 0, 0,
3668 add_prefix (&startfile_prefix
, standard_startfile_prefix_1
, 0, 0,
3670 add_prefix (&startfile_prefix
, standard_startfile_prefix_2
, 0, 0,
3672 #if 0 /* Can cause surprises, and one can use -B./ instead. */
3673 add_prefix (&startfile_prefix
, "./", 0, 1, NULL_PTR
);
3677 /* Now we have the specs.
3678 Set the `valid' bits for switches that match anything in any spec. */
3680 validate_all_switches ();
3682 /* Warn about any switches that no pass was interested in. */
3684 for (i
= 0; i
< n_switches
; i
++)
3685 if (! switches
[i
].valid
)
3686 error ("unrecognized option `-%s'", switches
[i
].part1
);
3688 if (print_libgcc_file_name
)
3690 printf ("%s\n", find_file ("libgcc.a"));
3694 /* Obey some of the options. */
3698 fprintf (stderr
, "gcc version %s\n", version_string
);
3704 fatal ("No input files specified.");
3706 /* Make a place to record the compiler output file names
3707 that correspond to the input files. */
3709 outfiles
= (char **) xmalloc (n_infiles
* sizeof (char *));
3710 bzero (outfiles
, n_infiles
* sizeof (char *));
3712 /* Record which files were specified explicitly as link input. */
3714 explicit_link_files
= xmalloc (n_infiles
);
3715 bzero (explicit_link_files
, n_infiles
);
3717 for (i
= 0; i
< n_infiles
; i
++)
3719 register struct compiler
*cp
= 0;
3720 int this_file_error
= 0;
3722 /* Tell do_spec what to substitute for %i. */
3724 input_filename
= infiles
[i
].name
;
3725 input_filename_length
= strlen (input_filename
);
3726 input_file_number
= i
;
3728 /* Use the same thing in %o, unless cp->spec says otherwise. */
3730 outfiles
[i
] = input_filename
;
3732 /* Figure out which compiler from the file's suffix. */
3734 cp
= lookup_compiler (infiles
[i
].name
, input_filename_length
,
3735 infiles
[i
].language
);
3739 /* Ok, we found an applicable compiler. Run its spec. */
3740 /* First say how much of input_filename to substitute for %b */
3744 input_basename
= input_filename
;
3745 for (p
= input_filename
; *p
; p
++)
3747 input_basename
= p
+ 1;
3749 /* Find a suffix starting with the last period,
3750 and set basename_length to exclude that suffix. */
3751 basename_length
= strlen (input_basename
);
3752 p
= input_basename
+ basename_length
;
3753 while (p
!= input_basename
&& *p
!= '.') --p
;
3754 if (*p
== '.' && p
!= input_basename
)
3756 basename_length
= p
- input_basename
;
3757 input_suffix
= p
+ 1;
3763 for (j
= 0; j
< sizeof cp
->spec
/ sizeof cp
->spec
[0]; j
++)
3765 len
+= strlen (cp
->spec
[j
]);
3767 p
= (char *) xmalloc (len
+ 1);
3770 for (j
= 0; j
< sizeof cp
->spec
/ sizeof cp
->spec
[0]; j
++)
3773 strcpy (p
+ len
, cp
->spec
[j
]);
3774 len
+= strlen (cp
->spec
[j
]);
3777 value
= do_spec (p
);
3780 this_file_error
= 1;
3783 /* If this file's name does not contain a recognized suffix,
3784 record it as explicit linker input. */
3787 explicit_link_files
[i
] = 1;
3789 /* Clear the delete-on-failure queue, deleting the files in it
3790 if this compilation failed. */
3792 if (this_file_error
)
3794 delete_failure_queue ();
3797 /* If this compilation succeeded, don't delete those files later. */
3798 clear_failure_queue ();
3801 /* Run ld to link all the compiler output files. */
3803 if (error_count
== 0)
3805 int tmp
= execution_count
;
3809 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
3811 putenv_from_prefixes (&exec_prefix
, "COMPILER_PATH=");
3812 putenv_from_prefixes (&startfile_prefix
, "LIBRARY_PATH=");
3814 /* Build COLLECT_GCC_OPTIONS to have all of the options specified to
3816 obstack_grow (&collect_obstack
, "COLLECT_GCC_OPTIONS=",
3817 sizeof ("COLLECT_GCC_OPTIONS=")-1);
3820 for (i
= 0; i
< n_switches
; i
++)
3824 obstack_grow (&collect_obstack
, " ", 1);
3827 obstack_grow (&collect_obstack
, "-", 1);
3828 obstack_grow (&collect_obstack
, switches
[i
].part1
,
3829 strlen (switches
[i
].part1
));
3831 for (args
= switches
[i
].args
; args
&& *args
; args
++)
3833 obstack_grow (&collect_obstack
, " ", 1);
3834 obstack_grow (&collect_obstack
, *args
, strlen (*args
));
3837 obstack_grow (&collect_obstack
, "\0", 1);
3838 putenv (obstack_finish (&collect_obstack
));
3840 value
= do_spec (link_command_spec
);
3843 linker_was_run
= (tmp
!= execution_count
);
3846 /* Warn if a -B option was specified but the prefix was never used. */
3847 unused_prefix_warnings (&exec_prefix
);
3848 unused_prefix_warnings (&startfile_prefix
);
3850 /* If options said don't run linker,
3851 complain about input files to be given to the linker. */
3853 if (! linker_was_run
&& error_count
== 0)
3854 for (i
= 0; i
< n_infiles
; i
++)
3855 if (explicit_link_files
[i
])
3856 error ("%s: linker input file unused since linking not done",
3859 /* Delete some or all of the temporary files we made. */
3862 delete_failure_queue ();
3863 delete_temp_files ();
3865 exit (error_count
> 0 ? (signal_count
? 2 : 1) : 0);
3870 /* Find the proper compilation spec for the file name NAME,
3871 whose length is LENGTH. LANGUAGE is the specified language,
3872 or 0 if none specified. */
3874 static struct compiler
*
3875 lookup_compiler (name
, length
, language
)
3880 struct compiler
*cp
;
3882 /* Look for the language, if one is spec'd. */
3885 for (cp
= compilers
+ n_compilers
- 1; cp
>= compilers
; cp
--)
3889 if (cp
->suffix
[0] == '@'
3890 && !strcmp (cp
->suffix
+ 1, language
))
3894 error ("language %s not recognized", language
);
3897 /* Look for a suffix. */
3898 for (cp
= compilers
+ n_compilers
- 1; cp
>= compilers
; cp
--)
3900 if (/* The suffix `-' matches only the file name `-'. */
3901 (!strcmp (cp
->suffix
, "-") && !strcmp (name
, "-"))
3903 (strlen (cp
->suffix
) < length
3904 /* See if the suffix matches the end of NAME. */
3905 && !strcmp (cp
->suffix
,
3906 name
+ length
- strlen (cp
->suffix
))))
3908 if (cp
->spec
[0][0] == '@')
3910 struct compiler
*new;
3911 /* An alias entry maps a suffix to a language.
3912 Search for the language; pass 0 for NAME and LENGTH
3913 to avoid infinite recursion if language not found.
3914 Construct the new compiler spec. */
3915 language
= cp
->spec
[0] + 1;
3916 new = (struct compiler
*) xmalloc (sizeof (struct compiler
));
3917 new->suffix
= cp
->suffix
;
3918 bcopy (lookup_compiler (NULL_PTR
, 0, language
)->spec
,
3919 new->spec
, sizeof new->spec
);
3922 /* A non-alias entry: return it. */
3934 register char *value
= (char *) malloc (size
);
3936 fatal ("virtual memory exhausted");
3941 xrealloc (ptr
, size
)
3945 register char *value
= (char *) realloc (ptr
, size
);
3947 fatal ("virtual memory exhausted");
3951 /* Return a newly-allocated string whose contents concatenate those of s1, s2, s3. */
3957 int len1
= strlen (s1
), len2
= strlen (s2
), len3
= strlen (s3
);
3958 char *result
= xmalloc (len1
+ len2
+ len3
+ 1);
3960 strcpy (result
, s1
);
3961 strcpy (result
+ len1
, s2
);
3962 strcpy (result
+ len1
+ len2
, s3
);
3963 *(result
+ len1
+ len2
+ len3
) = 0;
3969 save_string (s
, len
)
3973 register char *result
= xmalloc (len
+ 1);
3975 bcopy (s
, result
, len
);
3981 pfatal_with_name (name
)
3986 if (errno
< sys_nerr
)
3987 s
= concat ("%s: ", sys_errlist
[errno
], "");
3989 s
= "cannot open %s";
3994 perror_with_name (name
)
3999 if (errno
< sys_nerr
)
4000 s
= concat ("%s: ", sys_errlist
[errno
], "");
4002 s
= "cannot open %s";
4012 if (errno
< sys_nerr
)
4013 s
= concat ("installation problem, cannot exec %s: ",
4014 sys_errlist
[errno
], "");
4016 s
= "installation problem, cannot exec %s";
4020 /* More 'friendly' abort that prints the line and file.
4021 config.h can #define abort fancy_abort if you like that sort of thing. */
4026 fatal ("Internal gcc abort.");
4031 /* Output an error message and exit */
4041 format
= va_arg (ap
, char *);
4042 fprintf (stderr
, "%s: ", programname
);
4043 vfprintf (stderr
, format
, ap
);
4045 fprintf (stderr
, "\n");
4046 delete_temp_files ();
4058 format
= va_arg (ap
, char *);
4059 fprintf (stderr
, "%s: ", programname
);
4060 vfprintf (stderr
, format
, ap
);
4063 fprintf (stderr
, "\n");
4066 #else /* not HAVE_VPRINTF */
4069 fatal (msg
, arg1
, arg2
)
4070 char *msg
, *arg1
, *arg2
;
4072 error (msg
, arg1
, arg2
);
4073 delete_temp_files ();
4078 error (msg
, arg1
, arg2
)
4079 char *msg
, *arg1
, *arg2
;
4081 fprintf (stderr
, "%s: ", programname
);
4082 fprintf (stderr
, msg
, arg1
, arg2
);
4083 fprintf (stderr
, "\n");
4086 #endif /* not HAVE_VPRINTF */
4090 validate_all_switches ()
4092 struct compiler
*comp
;
4095 struct spec_list
*spec
;
4097 for (comp
= compilers
; comp
->spec
[0]; comp
++)
4100 for (i
= 0; i
< sizeof comp
->spec
/ sizeof comp
->spec
[0] && comp
->spec
[i
]; i
++)
4104 if (c
== '%' && *p
== '{')
4105 /* We have a switch spec. */
4106 validate_switches (p
+ 1);
4110 /* look through the linked list of extra specs read from the specs file */
4111 for (spec
= specs
; spec
; spec
= spec
->next
)
4115 if (c
== '%' && *p
== '{')
4116 /* We have a switch spec. */
4117 validate_switches (p
+ 1);
4120 p
= link_command_spec
;
4122 if (c
== '%' && *p
== '{')
4123 /* We have a switch spec. */
4124 validate_switches (p
+ 1);
4126 /* Now notice switches mentioned in the machine-specific specs. */
4130 if (c
== '%' && *p
== '{')
4131 /* We have a switch spec. */
4132 validate_switches (p
+ 1);
4136 if (c
== '%' && *p
== '{')
4137 /* We have a switch spec. */
4138 validate_switches (p
+ 1);
4142 if (c
== '%' && *p
== '{')
4143 /* We have a switch spec. */
4144 validate_switches (p
+ 1);
4146 p
= signed_char_spec
;
4148 if (c
== '%' && *p
== '{')
4149 /* We have a switch spec. */
4150 validate_switches (p
+ 1);
4154 if (c
== '%' && *p
== '{')
4155 /* We have a switch spec. */
4156 validate_switches (p
+ 1);
4160 if (c
== '%' && *p
== '{')
4161 /* We have a switch spec. */
4162 validate_switches (p
+ 1);
4166 if (c
== '%' && *p
== '{')
4167 /* We have a switch spec. */
4168 validate_switches (p
+ 1);
4172 if (c
== '%' && *p
== '{')
4173 /* We have a switch spec. */
4174 validate_switches (p
+ 1);
4178 if (c
== '%' && *p
== '{')
4179 /* We have a switch spec. */
4180 validate_switches (p
+ 1);
4183 /* Look at the switch-name that comes after START
4184 and mark as valid all supplied switches that match it. */
4187 validate_switches (start
)
4190 register char *p
= start
;
4205 while (*p
!= ':' && *p
!= '}') p
++;
4209 else if (p
[-1] == '*')
4211 /* Mark all matching switches as valid. */
4213 for (i
= 0; i
< n_switches
; i
++)
4214 if (!strncmp (switches
[i
].part1
, filter
, p
- filter
))
4215 switches
[i
].valid
= 1;
4219 /* Mark an exact matching switch as valid. */
4220 for (i
= 0; i
< n_switches
; i
++)
4222 if (!strncmp (switches
[i
].part1
, filter
, p
- filter
)
4223 && switches
[i
].part1
[p
- filter
] == 0)
4224 switches
[i
].valid
= 1;