1 /* Compiler driver program that can handle many languages.
2 Copyright (C) 1987, 1989, 1992, 1993 Free Software Foundation, Inc.
4 This file is part of GNU CC.
6 GNU CC is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2, or (at your option)
11 GNU CC is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with GNU CC; see the file COPYING. If not, write to
18 the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
20 This paragraph is here to try to keep Sun CC from dying.
21 The number of chars here seems crucial!!!! */
23 /* This program is the user interface to the C compiler and possibly to
24 other compilers. It is used because compilation is a complicated procedure
25 which involves running several programs and passing temporary files between
26 them, forwarding the users switches to those programs selectively,
27 and deleting the temporary files at the end.
29 CC recognizes how to compile each input file by suffixes in the file names.
30 Once it knows which kind of compilation to perform, the procedure for
31 compilation is specified by a string called a "spec". */
33 #include <sys/types.h>
37 #include <sys/file.h> /* May get R_OK, etc. on some systems. */
50 /* Define a generic NULL if one hasn't already been defined. */
57 #if defined (USE_PROTOTYPES) ? USE_PROTOTYPES : defined (__STDC__)
58 #define GENERIC_PTR void *
60 #define GENERIC_PTR char *
65 #define NULL_PTR ((GENERIC_PTR)0)
72 /* On MSDOS, write temp files in current dir
73 because there's no place else we can expect to use. */
80 /* Test if something is a normal file. */
82 #define S_ISREG(m) (((m) & S_IFMT) == S_IFREG)
85 /* Test if something is a directory. */
87 #define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
90 /* By default there is no special suffix for executables. */
91 #ifndef EXECUTABLE_SUFFIX
92 #define EXECUTABLE_SUFFIX ""
95 /* By default, colon separates directories in a path. */
96 #ifndef PATH_SEPARATOR
97 #define PATH_SEPARATOR ':'
100 #define obstack_chunk_alloc xmalloc
101 #define obstack_chunk_free free
104 extern char *getenv ();
106 extern int errno, sys_nerr;
107 extern char *sys_errlist[];
109 extern int execv (), execvp ();
111 /* If a stage of compilation returns an exit status >= 1,
112 compilation of that file ceases. */
114 #define MIN_FATAL_STATUS 1
116 /* Flag saying to print the full filename of libgcc.a
117 as found through our usual search mechanism. */
119 static int print_libgcc_file_name;
121 /* Flag indicating whether we should print the command and arguments */
123 static int verbose_flag;
125 /* Nonzero means write "temp" files in source directory
126 and use the source file's name in them, and don't delete them. */
128 static int save_temps_flag;
130 /* The compiler version specified with -V */
132 static char *spec_version;
134 /* The target machine specified with -b. */
136 static char *spec_machine = DEFAULT_TARGET_MACHINE;
138 /* Nonzero if cross-compiling.
139 When -b is used, the value comes from the `specs' file. */
142 static int cross_compile = 1;
144 static int cross_compile = 0;
147 /* The number of errors that have occurred; the link phase will not be
148 run if this is non-zero. */
149 static int error_count = 0;
151 /* This is the obstack which we use to allocate many strings. */
153 static struct obstack obstack;
155 /* This is the obstack to build an environment variable to pass to
156 collect2 that describes all of the relevant switches of what to
157 pass the compiler in building the list of pointers to constructors
160 static struct obstack collect_obstack;
162 extern char *version_string;
164 static void set_spec ();
165 static struct compiler *lookup_compiler ();
166 static char *find_a_file ();
167 static void add_prefix ();
168 static char *skip_whitespace ();
169 static void record_temp_file ();
170 static char *handle_braces ();
171 static char *save_string ();
172 static char *concat ();
173 static int do_spec ();
174 static int do_spec_1 ();
175 static char *find_file ();
176 static int is_directory ();
177 static void validate_switches ();
178 static void validate_all_switches ();
179 static void give_switch ();
180 static void pfatal_with_name ();
181 static void perror_with_name ();
182 static void perror_exec ();
183 static void fatal ();
184 static void error ();
189 /* Specs are strings containing lines, each of which (if not blank)
190 is made up of a program name, and arguments separated by spaces.
191 The program name must be exact and start from root, since no path
192 is searched and it is unreliable to depend on the current working directory.
193 Redirection of input or output is not supported; the subprograms must
194 accept filenames saying what files to read and write.
196 In addition, the specs can contain %-sequences to substitute variable text
197 or for conditional text. Here is a table of all defined %-sequences.
198 Note that spaces are not generated automatically around the results of
199 expanding these sequences; therefore, you can concatenate them together
200 or with constant text in a single argument.
202 %% substitute one % into the program name or argument.
203 %i substitute the name of the input file being processed.
204 %b substitute the basename of the input file being processed.
205 This is the substring up to (and not including) the last period
206 and not including the directory.
207 %g substitute the temporary-file-name-base. This is a string chosen
208 once per compilation. Different temporary file names are made by
209 concatenation of constant strings on the end, as in `%g.s'.
210 %g also has the same effect of %d.
211 %u like %g, but make the temporary file name unique.
212 %U returns the last file name generated with %u.
213 %d marks the argument containing or following the %d as a
214 temporary file name, so that that file will be deleted if CC exits
215 successfully. Unlike %g, this contributes no text to the argument.
216 %w marks the argument containing or following the %w as the
217 "output file" of this compilation. This puts the argument
218 into the sequence of arguments that %o will substitute later.
220 like %{...} but mark last argument supplied within
221 as a file to be deleted on failure.
222 %o substitutes the names of all the output files, with spaces
223 automatically placed around them. You should write spaces
224 around the %o as well or the results are undefined.
225 %o is for use in the specs for running the linker.
226 Input files whose names have no recognized suffix are not compiled
227 at all, but they are included among the output files, so they will
229 %p substitutes the standard macro predefinitions for the
230 current target machine. Use this when running cpp.
231 %P like %p, but puts `__' before and after the name of each macro.
232 (Except macros that already have __.)
234 %I Substitute a -iprefix option made from GCC_EXEC_PREFIX.
235 %s current argument is the name of a library or startup file of some sort.
236 Search for that file in a standard list of directories
237 and substitute the full name found.
238 %eSTR Print STR as an error message. STR is terminated by a newline.
239 Use this when inconsistent options are detected.
240 %x{OPTION} Accumulate an option for %X.
241 %X Output the accumulated linker options specified by compilations.
242 %Y Output the accumulated assembler options specified by compilations.
243 %a process ASM_SPEC as a spec.
244 This allows config.h to specify part of the spec for running as.
245 %A process ASM_FINAL_SPEC as a spec. A capital A is actually
246 used here. This can be used to run a post-processor after the
247 assembler has done it's job.
248 %D Dump out a -L option for each directory in startfile_prefix.
249 %l process LINK_SPEC as a spec.
250 %L process LIB_SPEC as a spec.
251 %S process STARTFILE_SPEC as a spec. A capital S is actually used here.
252 %E process ENDFILE_SPEC as a spec. A capital E is actually used here.
253 %c process SIGNED_CHAR_SPEC as a spec.
254 %C process CPP_SPEC as a spec. A capital C is actually used here.
255 %1 process CC1_SPEC as a spec.
256 %2 process CC1PLUS_SPEC as a spec.
257 %| output "-" if the input for the current command is coming from a pipe.
258 %* substitute the variable part of a matched option. (See below.)
259 Note that each comma in the substituted string is replaced by
261 %{S} substitutes the -S switch, if that switch was given to CC.
262 If that switch was not specified, this substitutes nothing.
263 Here S is a metasyntactic variable.
264 %{S*} substitutes all the switches specified to CC whose names start
265 with -S. This is used for -o, -D, -I, etc; switches that take
266 arguments. CC considers `-o foo' as being one switch whose
267 name starts with `o'. %{o*} would substitute this text,
268 including the space; thus, two arguments would be generated.
269 %{S*:X} substitutes X if one or more switches whose names start with -S are
270 specified to CC. Note that the tail part of the -S option
271 (i.e. the part matched by the `*') will be substituted for each
272 occurrence of %* within X.
273 %{S:X} substitutes X, but only if the -S switch was given to CC.
274 %{!S:X} substitutes X, but only if the -S switch was NOT given to CC.
275 %{|S:X} like %{S:X}, but if no S switch, substitute `-'.
276 %{|!S:X} like %{!S:X}, but if there is an S switch, substitute `-'.
277 %{.S:X} substitutes X, but only if processing a file with suffix S.
278 %{!.S:X} substitutes X, but only if NOT processing a file with suffix S.
279 %(Spec) processes a specification defined in a specs file as *Spec:
280 %[Spec] as above, but put __ around -D arguments
282 The conditional text X in a %{S:X} or %{!S:X} construct may contain
283 other nested % constructs or spaces, or even newlines. They are
284 processed as usual, as described above.
286 The character | is used to indicate that a command should be piped to
287 the following command, but only if -pipe is specified.
289 Note that it is built into CC which switches take arguments and which
290 do not. You might think it would be useful to generalize this to
291 allow each compiler's spec to say which switches take arguments. But
292 this cannot be done in a consistent fashion. CC cannot even decide
293 which input files have been specified without knowing which switches
294 take arguments, and it must know which input files to compile in order
295 to tell which compilers to run.
297 CC also knows implicitly that arguments starting in `-l' are to be
298 treated as compiler output files, and passed to the linker in their
299 proper position among the other output files. */
301 /* Define the macros used for specs %a, %l, %L, %S, %c, %C, %1. */
303 /* config.h can define ASM_SPEC to provide extra args to the assembler
304 or extra switch-translations. */
309 /* config.h can define ASM_FINAL_SPEC to run a post processor after
310 the assembler has run. */
311 #ifndef ASM_FINAL_SPEC
312 #define ASM_FINAL_SPEC ""
315 /* config.h can define CPP_SPEC to provide extra args to the C preprocessor
316 or extra switch-translations. */
321 /* config.h can define CC1_SPEC to provide extra args to cc1 and cc1plus
322 or extra switch-translations. */
327 /* config.h can define CC1PLUS_SPEC to provide extra args to cc1plus
328 or extra switch-translations. */
330 #define CC1PLUS_SPEC ""
333 /* config.h can define LINK_SPEC to provide extra args to the linker
334 or extra switch-translations. */
339 /* config.h can define LIB_SPEC to override the default libraries. */
341 #define LIB_SPEC "%{g*:-lg} %{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p}"
344 /* config.h can define STARTFILE_SPEC to override the default crt0 files. */
345 #ifndef STARTFILE_SPEC
346 #define STARTFILE_SPEC \
347 "%{pg:gcrt0.o%s}%{!pg:%{p:mcrt0.o%s}%{!p:crt0.o%s}}"
350 /* config.h can define SWITCHES_NEED_SPACES to control passing -o and -L.
351 Make the string nonempty to require spaces there. */
352 #ifndef SWITCHES_NEED_SPACES
353 #define SWITCHES_NEED_SPACES ""
356 /* config.h can define ENDFILE_SPEC to override the default crtn files. */
358 #define ENDFILE_SPEC ""
361 /* This spec is used for telling cpp whether char is signed or not. */
362 #ifndef SIGNED_CHAR_SPEC
363 /* Use #if rather than ?:
364 because MIPS C compiler rejects like ?: in initializers. */
365 #if DEFAULT_SIGNED_CHAR
366 #define SIGNED_CHAR_SPEC "%{funsigned-char:-D__CHAR_UNSIGNED__}"
368 #define SIGNED_CHAR_SPEC "%{!fsigned-char:-D__CHAR_UNSIGNED__}"
372 static char *cpp_spec = CPP_SPEC;
373 static char *cpp_predefines = CPP_PREDEFINES;
374 static char *cc1_spec = CC1_SPEC;
375 static char *cc1plus_spec = CC1PLUS_SPEC;
376 static char *signed_char_spec = SIGNED_CHAR_SPEC;
377 static char *asm_spec = ASM_SPEC;
378 static char *asm_final_spec = ASM_FINAL_SPEC;
379 static char *link_spec = LINK_SPEC;
380 static char *lib_spec = LIB_SPEC;
381 static char *endfile_spec = ENDFILE_SPEC;
382 static char *startfile_spec = STARTFILE_SPEC;
383 static char *switches_need_spaces = SWITCHES_NEED_SPACES;
385 /* This defines which switch letters take arguments. */
387 #ifndef SWITCH_TAKES_ARG
388 #define SWITCH_TAKES_ARG(CHAR) \
389 ((CHAR) == 'D' || (CHAR) == 'U' || (CHAR) == 'o' \
390 || (CHAR) == 'e' || (CHAR) == 'T' || (CHAR) == 'u' \
391 || (CHAR) == 'I' || (CHAR) == 'm' \
392 || (CHAR) == 'L' || (CHAR) == 'A')
395 /* This defines which multi-letter switches take arguments. */
397 #define DEFAULT_WORD_SWITCH_TAKES_ARG(STR) \
398 (!strcmp (STR, "Tdata") || !strcmp (STR, "Ttext") \
399 || !strcmp (STR, "Tbss") || !strcmp (STR, "include") \
400 || !strcmp (STR, "imacros") || !strcmp (STR, "aux-info") \
401 || !strcmp (STR, "idirafter") || !strcmp (STR, "iprefix") \
402 || !strcmp (STR, "iwithprefix") || !strcmp (STR, "iwithprefixbefore"))
404 #ifndef WORD_SWITCH_TAKES_ARG
405 #define WORD_SWITCH_TAKES_ARG(STR) DEFAULT_WORD_SWITCH_TAKES_ARG (STR)
408 /* Record the mapping from file suffixes for compilation specs. */
412 char *suffix; /* Use this compiler for input files
413 whose names end in this suffix. */
415 char *spec[4]; /* To use this compiler, concatenate these
416 specs and pass to do_spec. */
419 /* Pointer to a vector of `struct compiler' that gives the spec for
420 compiling a file, based on its suffix.
421 A file that does not end in any of these suffixes will be passed
422 unchanged to the loader and nothing else will be done to it.
424 An entry containing two 0s is used to terminate the vector.
426 If multiple entries match a file, the last matching one is used. */
428 static struct compiler *compilers;
430 /* Number of entries in `compilers', not counting the null terminator. */
432 static int n_compilers;
434 /* The default list of file name suffixes and their compilation specs. */
436 static struct compiler default_compilers[] =
440 "cpp -lang-c %{nostdinc*} %{C} %{v} %{A*} %{I*} %{P} %I\
441 %{C:%{!E:%eGNU C does not support -C without using -E}}\
442 %{M} %{MM} %{MD:-MD %b.d} %{MMD:-MMD %b.d}\
443 -undef -D__GNUC__=2 %{ansi:-trigraphs -$ -D__STRICT_ANSI__}\
444 %{!undef:%{!ansi:%p} %P} %{trigraphs} \
445 %c %{O*:%{!O0:-D__OPTIMIZE__}} %{traditional} %{ftraditional:-traditional}\
446 %{traditional-cpp:-traditional}\
447 %{g*} %{W*} %{w} %{pedantic*} %{H} %{d*} %C %{D*} %{U*} %{i*}\
448 %i %{!M:%{!MM:%{!E:%{!pipe:%g.i}}}}%{E:%W{o*}}%{M:%W{o*}}%{MM:%W{o*}} |\n",
449 "%{!M:%{!MM:%{!E:cc1 %{!pipe:%g.i} %1 \
450 %{!Q:-quiet} -dumpbase %b.c %{d*} %{m*} %{a}\
451 %{g*} %{O*} %{W*} %{w} %{pedantic*} %{ansi} \
452 %{traditional} %{v:-version} %{pg:-p} %{p} %{f*}\
454 %{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\
455 %{S:%W{o*}%{!o*:-o %b.s}}%{!S:-o %{|!pipe:%g.s}} |\n\
456 %{!S:as %{R} %{j} %{J} %{h} %{d2} %a %Y\
457 %{c:%W{o*}%{!o*:-o %w%b.o}}%{!c:-o %d%w%u.o}\
458 %{!pipe:%g.s} %A\n }}}}"},
460 "%{E:cpp -lang-c %{nostdinc*} %{C} %{v} %{A*} %{I*} %{P} %I\
461 %{C:%{!E:%eGNU C does not support -C without using -E}}\
462 %{M} %{MM} %{MD:-MD %b.d} %{MMD:-MMD %b.d}\
463 -undef -D__GNUC__=2 %{ansi:-trigraphs -$ -D__STRICT_ANSI__}\
464 %{!undef:%{!ansi:%p} %P} %{trigraphs}\
465 %c %{O*:%{!O0:-D__OPTIMIZE__}} %{traditional} %{ftraditional:-traditional}\
466 %{traditional-cpp:-traditional}\
467 %{g*} %{W*} %{w} %{pedantic*} %{H} %{d*} %C %{D*} %{U*} %{i*}\
469 %{!E:%e-E required when input is from standard input}"},
470 {".m", "@objective-c"},
472 "cpp -lang-objc %{nostdinc*} %{C} %{v} %{A*} %{I*} %{P} %I\
473 %{C:%{!E:%eGNU C does not support -C without using -E}}\
474 %{M} %{MM} %{MD:-MD %b.d} %{MMD:-MMD %b.d}\
475 -undef -D__OBJC__ -D__GNUC__=2 %{ansi:-trigraphs -$ -D__STRICT_ANSI__}\
476 %{!undef:%{!ansi:%p} %P} %{trigraphs}\
477 %c %{O*:%{!O0:-D__OPTIMIZE__}} %{traditional} %{ftraditional:-traditional}\
478 %{traditional-cpp:-traditional}\
479 %{g*} %{W*} %{w} %{pedantic*} %{H} %{d*} %C %{D*} %{U*} %{i*}\
480 %i %{!M:%{!MM:%{!E:%{!pipe:%g.i}}}}%{E:%W{o*}}%{M:%W{o*}}%{MM:%W{o*}} |\n",
481 "%{!M:%{!MM:%{!E:cc1obj %{!pipe:%g.i} %1 \
482 %{!Q:-quiet} -dumpbase %b.m %{d*} %{m*} %{a}\
483 %{g*} %{O*} %{W*} %{w} %{pedantic*} %{ansi} \
484 %{traditional} %{v:-version} %{pg:-p} %{p} %{f*} \
485 -lang-objc %{gen-decls} \
487 %{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\
488 %{S:%W{o*}%{!o*:-o %b.s}}%{!S:-o %{|!pipe:%g.s}} |\n\
489 %{!S:as %{R} %{j} %{J} %{h} %{d2} %a %Y\
490 %{c:%W{o*}%{!o*:-o %w%b.o}}%{!c:-o %d%w%u.o}\
491 %{!pipe:%g.s} %A\n }}}}"},
494 "%{!E:%eCompilation of header file requested} \
495 cpp %{nostdinc*} %{C} %{v} %{A*} %{I*} %{P} %I\
496 %{C:%{!E:%eGNU C does not support -C without using -E}}\
497 %{M} %{MM} %{MD:-MD %b.d} %{MMD:-MMD %b.d} \
498 -undef -D__GNUC__=2 %{ansi:-trigraphs -$ -D__STRICT_ANSI__}\
499 %{!undef:%{!ansi:%p} %P} %{trigraphs}\
500 %c %{O*:%{!O0:-D__OPTIMIZE__}} %{traditional} %{ftraditional:-traditional}\
501 %{traditional-cpp:-traditional}\
502 %{g*} %{W*} %{w} %{pedantic*} %{H} %{d*} %C %{D*} %{U*} %{i*}\
508 "cpp -lang-c++ %{nostdinc*} %{C} %{v} %{A*} %{I*} %{P} %I\
509 %{C:%{!E:%eGNU C++ does not support -C without using -E}}\
510 %{M} %{MM} %{MD:-MD %b.d} %{MMD:-MMD %b.d} \
511 -undef -D__GNUC__=2 -D__GNUG__=2 -D__cplusplus \
512 %{ansi:-trigraphs -$ -D__STRICT_ANSI__} %{!undef:%{!ansi:%p} %P}\
513 %c %{O*:%{!O0:-D__OPTIMIZE__}} %{traditional} %{ftraditional:-traditional}\
514 %{traditional-cpp:-traditional} %{trigraphs}\
515 %{g*} %{W*} %{w} %{pedantic*} %{H} %{d*} %C %{D*} %{U*} %{i*}\
516 %i %{!M:%{!MM:%{!E:%{!pipe:%g.i}}}}%{E:%W{o*}}%{M:%W{o*}}%{MM:%W{o*}} |\n",
517 "%{!M:%{!MM:%{!E:cc1plus %{!pipe:%g.i} %1 %2\
518 %{!Q:-quiet} -dumpbase %b.cc %{d*} %{m*} %{a}\
519 %{g*} %{O*} %{W*} %{w} %{pedantic*} %{ansi} %{traditional}\
520 %{v:-version} %{pg:-p} %{p} %{f*} %{+e*}\
522 %{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\
523 %{S:%W{o*}%{!o*:-o %b.s}}%{!S:-o %{|!pipe:%g.s}} |\n\
524 %{!S:as %{R} %{j} %{J} %{h} %{d2} %a %Y\
525 %{c:%W{o*}%{!o*:-o %w%b.o}}%{!c:-o %d%w%u.o}\
526 %{!pipe:%g.s} %A\n }}}}"},
527 {".i", "@cpp-output"},
529 "cc1 %i %1 %{!Q:-quiet} %{d*} %{m*} %{a}\
530 %{g*} %{O*} %{W*} %{w} %{pedantic*} %{ansi} %{traditional}\
531 %{v:-version} %{pg:-p} %{p} %{f*}\
533 %{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\
534 %{S:%W{o*}%{!o*:-o %b.s}}%{!S:-o %{|!pipe:%g.s}} |\n\
535 %{!S:as %{R} %{j} %{J} %{h} %{d2} %a %Y\
536 %{c:%W{o*}%{!o*:-o %w%b.o}}%{!c:-o %d%w%u.o} %{!pipe:%g.s} %A\n }"},
537 {".ii", "@c++-cpp-output"},
539 "cc1plus %i %1 %2 %{!Q:-quiet} %{d*} %{m*} %{a}\
540 %{g*} %{O*} %{W*} %{w} %{pedantic*} %{ansi} %{traditional}\
541 %{v:-version} %{pg:-p} %{p} %{f*} %{+e*}\
543 %{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\
544 %{S:%W{o*}%{!o*:-o %b.s}}%{!S:-o %{|!pipe:%g.s}} |\n\
545 %{!S:as %{R} %{j} %{J} %{h} %{d2} %a %Y\
546 %{c:%W{o*}%{!o*:-o %w%b.o}}%{!c:-o %d%w%u.o}\
547 %{!pipe:%g.s} %A\n }"},
548 {".s", "@assembler"},
550 "%{!S:as %{R} %{j} %{J} %{h} %{d2} %a %Y\
551 %{c:%W{o*}%{!o*:-o %w%b.o}}%{!c:-o %d%w%u.o} %i %A\n }"},
552 {".S", "@assembler-with-cpp"},
553 {"@assembler-with-cpp",
554 "cpp -lang-asm %{nostdinc*} %{C} %{v} %{A*} %{I*} %{P} %I\
555 %{C:%{!E:%eGNU C does not support -C without using -E}}\
556 %{M} %{MM} %{MD:-MD %b.d} %{MMD:-MMD %b.d} %{trigraphs} \
557 -undef -$ %{!undef:%p %P} -D__ASSEMBLER__ \
558 %c %{O*:%{!O0:-D__OPTIMIZE__}} %{traditional} %{ftraditional:-traditional}\
559 %{traditional-cpp:-traditional}\
560 %{g*} %{W*} %{w} %{pedantic*} %{H} %{d*} %C %{D*} %{U*} %{i*}\
561 %i %{!M:%{!MM:%{!E:%{!pipe:%g.s}}}}%{E:%W{o*}}%{M:%W{o*}}%{MM:%W{o*}} |\n",
562 "%{!M:%{!MM:%{!E:%{!S:as %{R} %{j} %{J} %{h} %{d2} %a %Y\
563 %{c:%W{o*}%{!o*:-o %w%b.o}}%{!c:-o %d%w%u.o}\
564 %{!pipe:%g.s} %A\n }}}}"},
569 "gnat1 %{gnat*} %{k8:-gnatk8} %{!v:-quiet -gnatb} %{w:-gnatws}\
571 %{g*} %{O*} %{p} %{pg:-p} %{f*} %{d*}\
572 %{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\
573 %i %{S:%W{o*}%{!o*:-o %b.s}}%{!S:-o %{|!pipe:%g.s}} | \n",
574 "%{!S:%{!gnatc:%{!gnats:as %{R} %{j} %{J} %{h} %{d2} %a %Y\
575 %{c:%W{o*}%{!o*:-o %w%b.o}}%{!c:-o %d%w%u.o}\
576 %{!pipe:%g.s} %A\n}}} "},
577 /* Mark end of table */
581 /* Number of elements in default_compilers, not counting the terminator. */
583 static int n_default_compilers
584 = (sizeof default_compilers / sizeof (struct compiler)) - 1;
586 /* Here is the spec for running the linker, after compiling all files. */
588 /* -u* was put back because both BSD and SysV seem to support it. */
589 /* %{static:} simply prevents an error message if the target machine
590 doesn't handle -static. */
591 /* We want %{T*} after %{L*} and %D so that it can be used to specify linker
592 scripts which exist in user specified directories, or in standard
594 #ifdef LINK_LIBGCC_SPECIAL_1
595 /* Have gcc do the search for libgcc.a, but generate -L options as usual. */
596 static char *link_command_spec = "\
598 %{!c:%{!M:%{!MM:%{!E:%{!S:ld %l %X %{o*} %{A} %{d} %{e*} %{m} %{N} %{n} \
599 %{r} %{s} %{t} %{u*} %{x} %{z}\
600 %{!A:%{!nostartfiles:%{!nostdlib:%S}}} %{static:}\
601 %{L*} %D %{T*} %o %{!nostdlib:libgcc.a%s %L libgcc.a%s %{!A:%E}}\n }}}}}}";
603 #ifdef LINK_LIBGCC_SPECIAL
604 /* Have gcc do the search for libgcc.a, and don't generate -L options. */
605 static char *link_command_spec = "\
607 %{!c:%{!M:%{!MM:%{!E:%{!S:ld %l %X %{o*} %{A} %{d} %{e*} %{m} %{N} %{n} \
608 %{r} %{s} %{t} %{u*} %{x} %{z}\
609 %{!A:%{!nostartfiles:%{!nostdlib:%S}}} %{static:}\
610 %{L*} %{T*} %o %{!nostdlib:libgcc.a%s %L libgcc.a%s %{!A:%E}}\n }}}}}}";
612 /* Use -L and have the linker do the search for -lgcc. */
613 static char *link_command_spec = "\
615 %{!c:%{!M:%{!MM:%{!E:%{!S:ld %l %X %{o*} %{A} %{d} %{e*} %{m} %{N} %{n} \
616 %{r} %{s} %{t} %{u*} %{x} %{z}\
617 %{!A:%{!nostartfiles:%{!nostdlib:%S}}} %{static:}\
618 %{L*} %D %{T*} %o %{!nostdlib:-lgcc %L -lgcc %{!A:%E}}\n }}}}}}";
622 /* A vector of options to give to the linker.
623 These options are accumulated by -Xlinker and -Wl,
624 and substituted into the linker command with %X. */
625 static int n_linker_options;
626 static char **linker_options;
628 /* A vector of options to give to the assembler.
629 These options are accumulated by -Wa,
630 and substituted into the assembler command with %X. */
631 static int n_assembler_options;
632 static char **assembler_options;
634 /* Define how to map long options into short ones. */
636 /* This structure describes one mapping. */
639 /* The long option's name. */
641 /* The equivalent short option. */
643 /* Argument info. A string of flag chars; NULL equals no options.
644 a => argument required.
645 o => argument optional.
646 j => join argument to equivalent, making one word.
647 * => allow other text after NAME as an argument. */
651 /* This is the table of mappings. Mappings are tried sequentially
652 for each option encountered; the first one that matches, wins. */
654 struct option_map option_map[] =
656 {"--profile-blocks", "-a", 0},
657 {"--target", "-b", "a"},
658 {"--compile", "-c", 0},
659 {"--dump", "-d", "a"},
660 {"--entry", "-e", 0},
661 {"--debug", "-g", "oj"},
662 {"--include", "-include", "a"},
663 {"--imacros", "-imacros", "a"},
664 {"--include-prefix", "-iprefix", "a"},
665 {"--include-directory-after", "-idirafter", "a"},
666 {"--include-with-prefix", "-iwithprefix", "a"},
667 {"--include-with-prefix-before", "-iwithprefixbefore", "a"},
668 {"--include-with-prefix-after", "-iwithprefix", "a"},
669 {"--machine-", "-m", "*j"},
670 {"--machine", "-m", "aj"},
671 {"--no-standard-includes", "-nostdinc", 0},
672 {"--no-standard-libraries", "-nostdlib", 0},
673 {"--no-precompiled-includes", "-noprecomp", 0},
674 {"--output", "-o", "a"},
675 {"--profile", "-p", 0},
676 {"--quiet", "-q", 0},
677 {"--silent", "-q", 0},
678 {"--force-link", "-u", "a"},
679 {"--verbose", "-v", 0},
680 {"--version", "-dumpversion", 0},
681 {"--no-warnings", "-w", 0},
682 {"--language", "-x", "a"},
684 {"--assert", "-A", "a"},
685 {"--prefix", "-B", "a"},
686 {"--comments", "-C", 0},
687 {"--define-macro", "-D", "a"},
688 {"--preprocess", "-E", 0},
689 {"--trace-includes", "-H", 0},
690 {"--include-directory", "-I", "a"},
691 {"--include-barrier", "-I-", 0},
692 {"--library-directory", "-L", "a"},
693 {"--dependencies", "-M", 0},
694 {"--user-dependencies", "-MM", 0},
695 {"--write-dependencies", "-MD", 0},
696 {"--write-user-dependencies", "-MMD", 0},
697 {"--optimize", "-O", "oj"},
698 {"--no-line-commands", "-P", 0},
699 {"--assemble", "-S", 0},
700 {"--undefine-macro", "-U", "a"},
701 {"--use-version", "-V", "a"},
702 {"--for-assembler", "-Wa", "a"},
703 {"--extra-warnings", "-W", 0},
704 {"--all-warnings", "-Wall", 0},
705 {"--warn-", "-W", "*j"},
706 {"--for-linker", "-Xlinker", "a"},
708 {"--ansi", "-ansi", 0},
709 {"--traditional", "-traditional", 0},
710 {"--traditional-cpp", "-traditional-cpp", 0},
711 {"--trigraphs", "-trigraphs", 0},
712 {"--pipe", "-pipe", 0},
713 {"--dumpbase", "-dumpbase", "a"},
714 {"--pedantic", "-pedantic", 0},
715 {"--pedantic-errors", "-pedantic-errors", 0},
716 {"--save-temps", "-save-temps", 0},
717 {"--print-libgcc-file-name", "-print-libgcc-file-name", 0},
718 {"--static", "-static", 0},
719 {"--shared", "-shared", 0},
720 {"--symbolic", "-symbolic", 0},
724 /* Translate the options described by *ARGCP and *ARGVP.
725 Make a new vector and store it back in *ARGVP,
726 and store its length in *ARGVC. */
729 translate_options (argcp, argvp)
735 char **argv = *argvp;
736 char **newv = (char **) xmalloc ((argc + 2) * 2 * sizeof (char *));
740 newv[newindex++] = argv[i++];
744 /* Translate -- options. */
745 if (argv[i][0] == '-' && argv[i][1] == '-')
747 /* Find a mapping that applies to this option. */
748 for (j = 0; j < sizeof (option_map) / sizeof (option_map[0]); j++)
750 int optlen = strlen (option_map[j].name);
751 int complen = strlen (argv[i]);
752 char *arginfo = option_map[j].arg_info;
756 if (complen > optlen)
758 if (!strncmp (argv[i], option_map[j].name, complen))
760 int extra = strlen (argv[i]) > optlen;
765 /* If the option has an argument, accept that. */
766 if (argv[i][optlen] == '=')
767 arg = argv[i] + optlen + 1;
768 /* If this mapping allows extra text at end of name,
769 accept that as "argument". */
770 else if (index (arginfo, '*') != 0)
771 arg = argv[i] + optlen;
772 /* Otherwise, extra text at end means mismatch.
773 Try other mappings. */
777 else if (index (arginfo, '*') != 0)
778 error ("Incomplete `%s' option", option_map[j].name);
780 /* Handle arguments. */
781 if (index (arginfo, 'o') != 0)
786 error ("Missing argument to `%s' option",
791 else if (index (arginfo, '*') != 0)
793 else if (index (arginfo, 'a') == 0)
796 error ("Extraneous argument to `%s' option",
801 /* Store the translation as one argv elt or as two. */
802 if (arg != 0 && index (arginfo, 'j') != 0)
803 newv[newindex++] = concat (option_map[j].equivalent,
807 newv[newindex++] = option_map[j].equivalent;
808 newv[newindex++] = arg;
811 newv[newindex++] = option_map[j].equivalent;
818 /* Handle old-fashioned options--just copy them through,
819 with their arguments. */
820 else if (argv[i][0] == '-')
822 char *p = argv[i] + 1;
826 if (SWITCH_TAKES_ARG (c) > (p[1] != 0))
827 nskip += SWITCH_TAKES_ARG (c) - (p[1] != 0);
828 else if (WORD_SWITCH_TAKES_ARG (p))
829 nskip += WORD_SWITCH_TAKES_ARG (p);
833 newv[newindex++] = argv[i++];
838 /* Ordinary operands, or +e options. */
839 newv[newindex++] = argv[i++];
848 /* Read compilation specs from a file named FILENAME,
849 replacing the default ones.
851 A suffix which starts with `*' is a definition for
852 one of the machine-specific sub-specs. The "suffix" should be
853 *asm, *cc1, *cpp, *link, *startfile, *signed_char, etc.
854 The corresponding spec is stored in asm_spec, etc.,
855 rather than in the `compilers' vector.
857 Anything invalid in the file is a fatal error. */
860 read_specs (filename)
869 fprintf (stderr, "Reading specs from %s\n", filename);
871 /* Open and stat the file. */
872 desc = open (filename, 0, 0);
874 pfatal_with_name (filename);
875 if (stat (filename, &statbuf) < 0)
876 pfatal_with_name (filename);
878 /* Read contents of file into BUFFER. */
879 buffer = xmalloc ((unsigned) statbuf.st_size + 1);
880 read (desc, buffer, (unsigned) statbuf.st_size);
881 buffer[statbuf.st_size] = 0;
884 /* Scan BUFFER for specs, putting them in the vector. */
890 char *in, *out, *p1, *p2;
892 /* Advance P in BUFFER to the next nonblank nocomment line. */
893 p = skip_whitespace (p);
897 /* Find the colon that should end the suffix. */
899 while (*p1 && *p1 != ':' && *p1 != '\n') p1++;
900 /* The colon shouldn't be missing. */
902 fatal ("specs file malformed after %d characters", p1 - buffer);
903 /* Skip back over trailing whitespace. */
905 while (p2 > buffer && (p2[-1] == ' ' || p2[-1] == '\t')) p2--;
906 /* Copy the suffix to a string. */
907 suffix = save_string (p, p2 - p);
908 /* Find the next line. */
909 p = skip_whitespace (p1 + 1);
911 fatal ("specs file malformed after %d characters", p - buffer);
913 /* Find next blank line. */
914 while (*p1 && !(*p1 == '\n' && p1[1] == '\n')) p1++;
915 /* Specs end at the blank line and do not include the newline. */
916 spec = save_string (p, p1 - p);
919 /* Delete backslash-newline sequences from the spec. */
924 if (in[0] == '\\' && in[1] == '\n')
926 else if (in[0] == '#')
928 while (*in && *in != '\n') in++;
935 if (suffix[0] == '*')
937 if (! strcmp (suffix, "*link_command"))
938 link_command_spec = spec;
940 set_spec (suffix + 1, spec);
944 /* Add this pair to the vector. */
946 = ((struct compiler *)
947 xrealloc (compilers, (n_compilers + 2) * sizeof (struct compiler)));
948 compilers[n_compilers].suffix = suffix;
949 bzero (compilers[n_compilers].spec,
950 sizeof compilers[n_compilers].spec);
951 compilers[n_compilers].spec[0] = spec;
956 link_command_spec = spec;
959 if (link_command_spec == 0)
960 fatal ("spec file has no spec for linking");
969 /* A fully-blank line is a delimiter in the SPEC file and shouldn't
970 be considered whitespace. */
971 if (p[0] == '\n' && p[1] == '\n' && p[2] == '\n')
973 else if (*p == '\n' || *p == ' ' || *p == '\t')
977 while (*p != '\n') p++;
987 /* Structure to keep track of the specs that have been defined so far. These
988 are accessed using %(specname) or %[specname] in a compiler or link spec. */
992 char *name; /* Name of the spec. */
993 char *spec; /* The spec itself. */
994 struct spec_list *next; /* Next spec in linked list. */
997 /* List of specs that have been defined so far. */
999 static struct spec_list *specs = (struct spec_list *) 0;
1001 /* Change the value of spec NAME to SPEC. If SPEC is empty, then the spec is
1002 removed; If the spec starts with a + then SPEC is added to the end of the
1006 set_spec (name, spec)
1010 struct spec_list *sl;
1013 /* See if the spec already exists */
1014 for (sl = specs; sl; sl = sl->next)
1015 if (strcmp (sl->name, name) == 0)
1020 /* Not found - make it */
1021 sl = (struct spec_list *) xmalloc (sizeof (struct spec_list));
1022 sl->name = save_string (name, strlen (name));
1023 sl->spec = save_string ("", 0);
1028 old_spec = sl->spec;
1029 if (name && spec[0] == '+' && isspace (spec[1]))
1030 sl->spec = concat (old_spec, spec + 1, "");
1032 sl->spec = save_string (spec, strlen (spec));
1034 if (! strcmp (name, "asm"))
1035 asm_spec = sl->spec;
1036 else if (! strcmp (name, "asm_final"))
1037 asm_final_spec = sl->spec;
1038 else if (! strcmp (name, "cc1"))
1039 cc1_spec = sl->spec;
1040 else if (! strcmp (name, "cc1plus"))
1041 cc1plus_spec = sl->spec;
1042 else if (! strcmp (name, "cpp"))
1043 cpp_spec = sl->spec;
1044 else if (! strcmp (name, "endfile"))
1045 endfile_spec = sl->spec;
1046 else if (! strcmp (name, "lib"))
1047 lib_spec = sl->spec;
1048 else if (! strcmp (name, "link"))
1049 link_spec = sl->spec;
1050 else if (! strcmp (name, "predefines"))
1051 cpp_predefines = sl->spec;
1052 else if (! strcmp (name, "signed_char"))
1053 signed_char_spec = sl->spec;
1054 else if (! strcmp (name, "startfile"))
1055 startfile_spec = sl->spec;
1056 else if (! strcmp (name, "switches_need_spaces"))
1057 switches_need_spaces = sl->spec;
1058 else if (! strcmp (name, "cross_compile"))
1059 cross_compile = atoi (sl->spec);
1060 /* Free the old spec */
1065 /* Accumulate a command (program name and args), and run it. */
1067 /* Vector of pointers to arguments in the current line of specifications. */
1069 static char **argbuf;
1071 /* Number of elements allocated in argbuf. */
1073 static int argbuf_length;
1075 /* Number of elements in argbuf currently in use (containing args). */
1077 static int argbuf_index;
1079 /* This is the list of suffixes and codes (%g/%u/%U) and the associated
1080 temp file. Used only if MKTEMP_EACH_FILE. */
1082 static struct temp_name {
1083 char *suffix; /* suffix associated with the code. */
1084 int length; /* strlen (suffix). */
1085 int unique; /* Indicates whether %g or %u/%U was used. */
1086 char *filename; /* associated filename. */
1087 int filename_length; /* strlen (filename). */
1088 struct temp_name *next;
1091 /* Number of commands executed so far. */
1093 static int execution_count;
1095 /* Number of commands that exited with a signal. */
1097 static int signal_count;
1099 /* Name with which this program was invoked. */
1101 static char *programname;
1103 /* Structures to keep track of prefixes to try when looking for files. */
1107 char *prefix; /* String to prepend to the path. */
1108 struct prefix_list *next; /* Next in linked list. */
1109 int require_machine_suffix; /* Don't use without machine_suffix. */
1110 /* 2 means try both machine_suffix and just_machine_suffix. */
1111 int *used_flag_ptr; /* 1 if a file was found with this prefix. */
1116 struct prefix_list *plist; /* List of prefixes to try */
1117 int max_len; /* Max length of a prefix in PLIST */
1118 char *name; /* Name of this list (used in config stuff) */
1121 /* List of prefixes to try when looking for executables. */
1123 static struct path_prefix exec_prefix = { 0, 0, "exec" };
1125 /* List of prefixes to try when looking for startup (crt0) files. */
1127 static struct path_prefix startfile_prefix = { 0, 0, "startfile" };
1129 /* Suffix to attach to directories searched for commands.
1130 This looks like `MACHINE/VERSION/'. */
1132 static char *machine_suffix = 0;
1134 /* Suffix to attach to directories searched for commands.
1135 This is just `MACHINE/'. */
1137 static char *just_machine_suffix = 0;
1139 /* Adjusted value of GCC_EXEC_PREFIX envvar. */
1141 static char *gcc_exec_prefix;
1143 /* Default prefixes to attach to command names. */
1145 #ifdef CROSS_COMPILE /* Don't use these prefixes for a cross compiler. */
1146 #undef MD_EXEC_PREFIX
1147 #undef MD_STARTFILE_PREFIX
1148 #undef MD_STARTFILE_PREFIX_1
1151 #ifndef STANDARD_EXEC_PREFIX
1152 #define STANDARD_EXEC_PREFIX "/usr/local/lib/gcc-lib/"
1153 #endif /* !defined STANDARD_EXEC_PREFIX */
1155 static char *standard_exec_prefix = STANDARD_EXEC_PREFIX;
1156 static char *standard_exec_prefix_1 = "/usr/lib/gcc/";
1157 #ifdef MD_EXEC_PREFIX
1158 static char *md_exec_prefix = MD_EXEC_PREFIX;
1161 #ifndef STANDARD_STARTFILE_PREFIX
1162 #define STANDARD_STARTFILE_PREFIX "/usr/local/lib/"
1163 #endif /* !defined STANDARD_STARTFILE_PREFIX */
1165 #ifdef MD_STARTFILE_PREFIX
1166 static char *md_startfile_prefix = MD_STARTFILE_PREFIX;
1168 #ifdef MD_STARTFILE_PREFIX_1
1169 static char *md_startfile_prefix_1 = MD_STARTFILE_PREFIX_1;
1171 static char *standard_startfile_prefix = STANDARD_STARTFILE_PREFIX;
1172 static char *standard_startfile_prefix_1 = "/lib/";
1173 static char *standard_startfile_prefix_2 = "/usr/lib/";
1175 #ifndef TOOLDIR_BASE_PREFIX
1176 #define TOOLDIR_BASE_PREFIX "/usr/local/"
1178 static char *tooldir_base_prefix = TOOLDIR_BASE_PREFIX;
1179 static char *tooldir_prefix;
1181 /* Clear out the vector of arguments (after a command is executed). */
1189 /* Add one argument to the vector at the end.
1190 This is done when a space is seen or at the end of the line.
1191 If DELETE_ALWAYS is nonzero, the arg is a filename
1192 and the file should be deleted eventually.
1193 If DELETE_FAILURE is nonzero, the arg is a filename
1194 and the file should be deleted if this compilation fails. */
1197 store_arg (arg, delete_always, delete_failure)
1199 int delete_always, delete_failure;
1201 if (argbuf_index + 1 == argbuf_length)
1203 argbuf = (char **) xrealloc (argbuf, (argbuf_length *= 2) * sizeof (char *));
1206 argbuf[argbuf_index++] = arg;
1207 argbuf[argbuf_index] = 0;
1209 if (delete_always || delete_failure)
1210 record_temp_file (arg, delete_always, delete_failure);
1213 /* Record the names of temporary files we tell compilers to write,
1214 and delete them at the end of the run. */
1216 /* This is the common prefix we use to make temp file names.
1217 It is chosen once for each run of this program.
1218 It is substituted into a spec by %g.
1219 Thus, all temp file names contain this prefix.
1220 In practice, all temp file names start with this prefix.
1222 This prefix comes from the envvar TMPDIR if it is defined;
1223 otherwise, from the P_tmpdir macro if that is defined;
1224 otherwise, in /usr/tmp or /tmp. */
1226 static char *temp_filename;
1228 /* Length of the prefix. */
1230 static int temp_filename_length;
1232 /* Define the list of temporary files to delete. */
1237 struct temp_file *next;
1240 /* Queue of files to delete on success or failure of compilation. */
1241 static struct temp_file *always_delete_queue;
1242 /* Queue of files to delete on failure of compilation. */
1243 static struct temp_file *failure_delete_queue;
1245 /* Record FILENAME as a file to be deleted automatically.
1246 ALWAYS_DELETE nonzero means delete it if all compilation succeeds;
1247 otherwise delete it in any case.
1248 FAIL_DELETE nonzero means delete it if a compilation step fails;
1249 otherwise delete it in any case. */
1252 record_temp_file (filename, always_delete, fail_delete)
1257 register char *name;
1258 name = xmalloc (strlen (filename) + 1);
1259 strcpy (name, filename);
1263 register struct temp_file *temp;
1264 for (temp = always_delete_queue; temp; temp = temp->next)
1265 if (! strcmp (name, temp->name))
1267 temp = (struct temp_file *) xmalloc (sizeof (struct temp_file));
1268 temp->next = always_delete_queue;
1270 always_delete_queue = temp;
1276 register struct temp_file *temp;
1277 for (temp = failure_delete_queue; temp; temp = temp->next)
1278 if (! strcmp (name, temp->name))
1280 temp = (struct temp_file *) xmalloc (sizeof (struct temp_file));
1281 temp->next = failure_delete_queue;
1283 failure_delete_queue = temp;
1288 /* Delete all the temporary files whose names we previously recorded. */
1291 delete_temp_files ()
1293 register struct temp_file *temp;
1295 for (temp = always_delete_queue; temp; temp = temp->next)
1299 printf ("Delete %s? (y or n) ", temp->name);
1303 while (getchar () != '\n') ;
1304 if (i == 'y' || i == 'Y')
1308 if (stat (temp->name, &st) >= 0)
1310 /* Delete only ordinary files. */
1311 if (S_ISREG (st.st_mode))
1312 if (unlink (temp->name) < 0)
1314 perror_with_name (temp->name);
1319 always_delete_queue = 0;
1322 /* Delete all the files to be deleted on error. */
1325 delete_failure_queue ()
1327 register struct temp_file *temp;
1329 for (temp = failure_delete_queue; temp; temp = temp->next)
1333 printf ("Delete %s? (y or n) ", temp->name);
1337 while (getchar () != '\n') ;
1338 if (i == 'y' || i == 'Y')
1341 if (unlink (temp->name) < 0)
1343 perror_with_name (temp->name);
1349 clear_failure_queue ()
1351 failure_delete_queue = 0;
1354 /* Compute a string to use as the base of all temporary file names.
1355 It is substituted for %g. */
1358 choose_temp_base_try (try, base)
1365 else if (try == (char *)0)
1367 else if (access (try, R_OK | W_OK) != 0)
1380 base = choose_temp_base_try (getenv ("TMPDIR"), base);
1381 base = choose_temp_base_try (getenv ("TMP"), base);
1382 base = choose_temp_base_try (getenv ("TEMP"), base);
1385 base = choose_temp_base_try (P_tmpdir, base);
1388 base = choose_temp_base_try ("/usr/tmp", base);
1389 base = choose_temp_base_try ("/tmp", base);
1391 /* If all else fails, use the current directory! */
1392 if (base == (char *)0)
1395 len = strlen (base);
1396 temp_filename = xmalloc (len + sizeof("/ccXXXXXX"));
1397 strcpy (temp_filename, base);
1398 if (len > 0 && temp_filename[len-1] != '/')
1399 temp_filename[len++] = '/';
1400 strcpy (temp_filename + len, "ccXXXXXX");
1402 mktemp (temp_filename);
1403 temp_filename_length = strlen (temp_filename);
1404 if (temp_filename_length == 0)
1409 /* Routine to add variables to the environment. We do this to pass
1410 the pathname of the gcc driver, and the directories search to the
1411 collect2 program, which is being run as ld. This way, we can be
1412 sure of executing the right compiler when collect2 wants to build
1413 constructors and destructors. Since the environment variables we
1414 use come from an obstack, we don't have to worry about allocating
1423 #ifndef VMS /* nor about VMS */
1425 extern char **environ;
1426 char **old_environ = environ;
1430 int str_len = strlen (str);
1434 while ((ch = *p++) != '\0' && ch != '=')
1440 /* Search for replacing an existing environment variable, and
1441 count the number of total environment variables. */
1442 for (envp = old_environ; *envp; envp++)
1445 if (!strncmp (str, *envp, name_len))
1452 /* Add a new environment variable */
1453 environ = (char **) xmalloc (sizeof (char *) * (num_envs+2));
1455 bcopy (old_environ, environ+1, sizeof (char *) * (num_envs+1));
1460 #endif /* HAVE_PUTENV */
1463 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables for collect. */
1466 putenv_from_prefixes (paths, env_var)
1467 struct path_prefix *paths;
1470 int suffix_len = (machine_suffix) ? strlen (machine_suffix) : 0;
1472 = (just_machine_suffix) ? strlen (just_machine_suffix) : 0;
1473 int first_time = TRUE;
1474 struct prefix_list *pprefix;
1476 obstack_grow (&collect_obstack, env_var, strlen (env_var));
1478 for (pprefix = paths->plist; pprefix != 0; pprefix = pprefix->next)
1480 int len = strlen (pprefix->prefix);
1483 && is_directory (pprefix->prefix, machine_suffix, 0))
1486 obstack_1grow (&collect_obstack, PATH_SEPARATOR);
1489 obstack_grow (&collect_obstack, pprefix->prefix, len);
1490 obstack_grow (&collect_obstack, machine_suffix, suffix_len);
1493 if (just_machine_suffix
1494 && pprefix->require_machine_suffix == 2
1495 && is_directory (pprefix->prefix, just_machine_suffix, 0))
1498 obstack_1grow (&collect_obstack, PATH_SEPARATOR);
1501 obstack_grow (&collect_obstack, pprefix->prefix, len);
1502 obstack_grow (&collect_obstack, just_machine_suffix,
1506 if (!pprefix->require_machine_suffix)
1509 obstack_1grow (&collect_obstack, PATH_SEPARATOR);
1512 obstack_grow (&collect_obstack, pprefix->prefix, len);
1515 obstack_1grow (&collect_obstack, '\0');
1516 putenv (obstack_finish (&collect_obstack));
1520 /* Search for NAME using the prefix list PREFIXES. MODE is passed to
1521 access to check permissions.
1522 Return 0 if not found, otherwise return its name, allocated with malloc. */
1525 find_a_file (pprefix, name, mode)
1526 struct path_prefix *pprefix;
1531 char *file_suffix = ((mode & X_OK) != 0 ? EXECUTABLE_SUFFIX : "");
1532 struct prefix_list *pl;
1533 int len = pprefix->max_len + strlen (name) + strlen (file_suffix) + 1;
1536 len += strlen (machine_suffix);
1538 temp = xmalloc (len);
1540 /* Determine the filename to execute (special case for absolute paths). */
1544 if (access (name, mode))
1546 strcpy (temp, name);
1551 for (pl = pprefix->plist; pl; pl = pl->next)
1555 strcpy (temp, pl->prefix);
1556 strcat (temp, machine_suffix);
1557 strcat (temp, name);
1558 if (access (temp, mode) == 0)
1560 if (pl->used_flag_ptr != 0)
1561 *pl->used_flag_ptr = 1;
1564 /* Some systems have a suffix for executable files.
1565 So try appending that. */
1566 if (file_suffix[0] != 0)
1568 strcat (temp, file_suffix);
1569 if (access (temp, mode) == 0)
1571 if (pl->used_flag_ptr != 0)
1572 *pl->used_flag_ptr = 1;
1577 /* Certain prefixes are tried with just the machine type,
1578 not the version. This is used for finding as, ld, etc. */
1579 if (just_machine_suffix && pl->require_machine_suffix == 2)
1581 strcpy (temp, pl->prefix);
1582 strcat (temp, just_machine_suffix);
1583 strcat (temp, name);
1584 if (access (temp, mode) == 0)
1586 if (pl->used_flag_ptr != 0)
1587 *pl->used_flag_ptr = 1;
1590 /* Some systems have a suffix for executable files.
1591 So try appending that. */
1592 if (file_suffix[0] != 0)
1594 strcat (temp, file_suffix);
1595 if (access (temp, mode) == 0)
1597 if (pl->used_flag_ptr != 0)
1598 *pl->used_flag_ptr = 1;
1603 /* Certain prefixes can't be used without the machine suffix
1604 when the machine or version is explicitly specified. */
1605 if (!pl->require_machine_suffix)
1607 strcpy (temp, pl->prefix);
1608 strcat (temp, name);
1609 if (access (temp, mode) == 0)
1611 if (pl->used_flag_ptr != 0)
1612 *pl->used_flag_ptr = 1;
1615 /* Some systems have a suffix for executable files.
1616 So try appending that. */
1617 if (file_suffix[0] != 0)
1619 strcat (temp, file_suffix);
1620 if (access (temp, mode) == 0)
1622 if (pl->used_flag_ptr != 0)
1623 *pl->used_flag_ptr = 1;
1634 /* Add an entry for PREFIX in PLIST. If FIRST is set, it goes
1635 at the start of the list, otherwise it goes at the end.
1637 If WARN is nonzero, we will warn if no file is found
1638 through this prefix. WARN should point to an int
1639 which will be set to 1 if this entry is used.
1641 REQUIRE_MACHINE_SUFFIX is 1 if this prefix can't be used without
1642 the complete value of machine_suffix.
1643 2 means try both machine_suffix and just_machine_suffix. */
1646 add_prefix (pprefix, prefix, first, require_machine_suffix, warn)
1647 struct path_prefix *pprefix;
1650 int require_machine_suffix;
1653 struct prefix_list *pl, **prev;
1656 if (!first && pprefix->plist)
1658 for (pl = pprefix->plist; pl->next; pl = pl->next)
1663 prev = &pprefix->plist;
1665 /* Keep track of the longest prefix */
1667 len = strlen (prefix);
1668 if (len > pprefix->max_len)
1669 pprefix->max_len = len;
1671 pl = (struct prefix_list *) xmalloc (sizeof (struct prefix_list));
1672 pl->prefix = save_string (prefix, len);
1673 pl->require_machine_suffix = require_machine_suffix;
1674 pl->used_flag_ptr = warn;
1681 pl->next = (struct prefix_list *) 0;
1685 /* Print warnings for any prefixes in the list PPREFIX that were not used. */
1688 unused_prefix_warnings (pprefix)
1689 struct path_prefix *pprefix;
1691 struct prefix_list *pl = pprefix->plist;
1695 if (pl->used_flag_ptr != 0 && !*pl->used_flag_ptr)
1697 error ("file path prefix `%s' never used",
1699 /* Prevent duplicate warnings. */
1700 *pl->used_flag_ptr = 1;
1706 /* Get rid of all prefixes built up so far in *PLISTP. */
1709 free_path_prefix (pprefix)
1710 struct path_prefix *pprefix;
1712 struct prefix_list *pl = pprefix->plist;
1713 struct prefix_list *temp;
1719 free (temp->prefix);
1720 free ((char *) temp);
1722 pprefix->plist = (struct prefix_list *) 0;
1725 /* stdin file number. */
1726 #define STDIN_FILE_NO 0
1728 /* stdout file number. */
1729 #define STDOUT_FILE_NO 1
1731 /* value of `pipe': port index for reading. */
1734 /* value of `pipe': port index for writing. */
1735 #define WRITE_PORT 1
1737 /* Pipe waiting from last process, to be used as input for the next one.
1738 Value is STDIN_FILE_NO if no pipe is waiting
1739 (i.e. the next command is the first of a group). */
1741 static int last_pipe_input;
1743 /* Fork one piped subcommand. FUNC is the system call to use
1744 (either execv or execvp). ARGV is the arg vector to use.
1745 NOT_LAST is nonzero if this is not the last subcommand
1746 (i.e. its output should be piped to the next one.) */
1751 /* Declare these to avoid compilation error. They won't be called. */
1752 int execv(const char *a, const char **b){}
1753 int execvp(const char *a, const char **b){}
1756 pexecute (search_flag, program, argv, not_last)
1764 int i, el = search_flag ? 0 : 4;
1766 scmd = (char *)malloc (strlen (program) + strlen (temp_filename) + 6 + el);
1767 rf = scmd + strlen(program) + 2 + el;
1768 sprintf (scmd, "%s%s @%s.gp", program,
1769 (search_flag ? "" : ".exe"), temp_filename);
1770 argfile = fopen (rf, "w");
1772 pfatal_with_name (rf);
1774 for (i=1; argv[i]; i++)
1777 for (cp = argv[i]; *cp; cp++)
1779 if (*cp == '"' || *cp == '\'' || *cp == '\\' || isspace (*cp))
1780 fputc ('\\', argfile);
1781 fputc (*cp, argfile);
1783 fputc ('\n', argfile);
1793 perror_exec (program);
1794 return MIN_FATAL_STATUS << 8;
1800 #else /* not __MSDOS__ */
1803 pexecute (search_flag, program, argv, not_last)
1809 int (*func)() = (search_flag ? execv : execvp);
1812 int input_desc = last_pipe_input;
1813 int output_desc = STDOUT_FILE_NO;
1814 int retries, sleep_interval;
1816 /* If this isn't the last process, make a pipe for its output,
1817 and record it as waiting to be the input to the next process. */
1821 if (pipe (pdes) < 0)
1822 pfatal_with_name ("pipe");
1823 output_desc = pdes[WRITE_PORT];
1824 last_pipe_input = pdes[READ_PORT];
1827 last_pipe_input = STDIN_FILE_NO;
1829 /* Fork a subprocess; wait and retry if it fails. */
1831 for (retries = 0; retries < 4; retries++)
1836 sleep (sleep_interval);
1837 sleep_interval *= 2;
1844 pfatal_with_name ("fork");
1846 pfatal_with_name ("vfork");
1852 /* Move the input and output pipes into place, if nec. */
1853 if (input_desc != STDIN_FILE_NO)
1855 close (STDIN_FILE_NO);
1859 if (output_desc != STDOUT_FILE_NO)
1861 close (STDOUT_FILE_NO);
1863 close (output_desc);
1866 /* Close the parent's descs that aren't wanted here. */
1867 if (last_pipe_input != STDIN_FILE_NO)
1868 close (last_pipe_input);
1870 /* Exec the program. */
1871 (*func) (program, argv);
1872 perror_exec (program);
1878 /* In the parent, after forking.
1879 Close the descriptors that we made for this child. */
1880 if (input_desc != STDIN_FILE_NO)
1882 if (output_desc != STDOUT_FILE_NO)
1883 close (output_desc);
1885 /* Return child's process number. */
1890 #endif /* not __MSDOS__ */
1894 pexecute (search_flag, program, argv, not_last)
1900 return (search_flag ? spawnv : spawnvp) (1, program, argv);
1902 #endif /* not OS2 */
1904 /* Execute the command specified by the arguments on the current line of spec.
1905 When using pipes, this includes several piped-together commands
1906 with `|' between them.
1908 Return 0 if successful, -1 if failed. */
1914 int n_commands; /* # of command. */
1918 char *prog; /* program name. */
1919 char **argv; /* vector of args. */
1920 int pid; /* pid of process for this command. */
1923 struct command *commands; /* each command buffer with above info. */
1925 /* Count # of piped commands. */
1926 for (n_commands = 1, i = 0; i < argbuf_index; i++)
1927 if (strcmp (argbuf[i], "|") == 0)
1930 /* Get storage for each command. */
1932 = (struct command *) alloca (n_commands * sizeof (struct command));
1934 /* Split argbuf into its separate piped processes,
1935 and record info about each one.
1936 Also search for the programs that are to be run. */
1938 commands[0].prog = argbuf[0]; /* first command. */
1939 commands[0].argv = &argbuf[0];
1940 string = find_a_file (&exec_prefix, commands[0].prog, X_OK);
1942 commands[0].argv[0] = string;
1944 for (n_commands = 1, i = 0; i < argbuf_index; i++)
1945 if (strcmp (argbuf[i], "|") == 0)
1946 { /* each command. */
1948 fatal ("-pipe not supported under MS-DOS");
1950 argbuf[i] = 0; /* termination of command args. */
1951 commands[n_commands].prog = argbuf[i + 1];
1952 commands[n_commands].argv = &argbuf[i + 1];
1953 string = find_a_file (&exec_prefix, commands[n_commands].prog, X_OK);
1955 commands[n_commands].argv[0] = string;
1959 argbuf[argbuf_index] = 0;
1961 /* If -v, print what we are about to do, and maybe query. */
1965 /* Print each piped command as a separate line. */
1966 for (i = 0; i < n_commands ; i++)
1970 for (j = commands[i].argv; *j; j++)
1971 fprintf (stderr, " %s", *j);
1973 /* Print a pipe symbol after all but the last command. */
1974 if (i + 1 != n_commands)
1975 fprintf (stderr, " |");
1976 fprintf (stderr, "\n");
1980 fprintf (stderr, "\nGo ahead? (y or n) ");
1984 while (getchar () != '\n') ;
1985 if (i != 'y' && i != 'Y')
1990 /* Run each piped subprocess. */
1992 last_pipe_input = STDIN_FILE_NO;
1993 for (i = 0; i < n_commands; i++)
1995 char *string = commands[i].argv[0];
1997 commands[i].pid = pexecute (string != commands[i].prog,
1998 string, commands[i].argv,
1999 i + 1 < n_commands);
2001 if (string != commands[i].prog)
2007 /* Wait for all the subprocesses to finish.
2008 We don't care what order they finish in;
2009 we know that N_COMMANDS waits will get them all. */
2014 for (i = 0; i < n_commands; i++)
2021 status = pid = commands[i].pid;
2023 pid = wait (&status);
2031 for (j = 0; j < n_commands; j++)
2032 if (commands[j].pid == pid)
2033 prog = commands[j].prog;
2035 if ((status & 0x7F) != 0)
2037 fatal ("Internal compiler error: program %s got fatal signal %d",
2038 prog, (status & 0x7F));
2041 if (((status & 0xFF00) >> 8) >= MIN_FATAL_STATUS)
2049 /* Find all the switches given to us
2050 and make a vector describing them.
2051 The elements of the vector are strings, one per switch given.
2052 If a switch uses following arguments, then the `part1' field
2053 is the switch itself and the `args' field
2054 is a null-terminated vector containing the following arguments.
2055 The `valid' field is nonzero if any spec has looked at this switch;
2056 if it remains zero at the end of the run, it must be meaningless. */
2065 static struct switchstr *switches;
2067 static int n_switches;
2075 /* Also a vector of input files specified. */
2077 static struct infile *infiles;
2079 static int n_infiles;
2081 /* And a vector of corresponding output files is made up later. */
2083 static char **outfiles;
2085 /* Create the vector `switches' and its contents.
2086 Store its length in `n_switches'. */
2089 process_command (argc, argv)
2095 char *spec_lang = 0;
2096 int last_language_n_infiles;
2098 gcc_exec_prefix = getenv ("GCC_EXEC_PREFIX");
2103 /* Default for -V is our version number, ending at first space. */
2104 spec_version = save_string (version_string, strlen (version_string));
2105 for (temp = spec_version; *temp && *temp != ' '; temp++);
2106 if (*temp) *temp = '\0';
2108 /* Set up the default search paths. */
2110 if (gcc_exec_prefix)
2112 add_prefix (&exec_prefix, gcc_exec_prefix, 0, 0, NULL_PTR);
2113 add_prefix (&startfile_prefix, gcc_exec_prefix, 0, 0, NULL_PTR);
2116 /* COMPILER_PATH and LIBRARY_PATH have values
2117 that are lists of directory names with colons. */
2119 temp = getenv ("COMPILER_PATH");
2122 char *startp, *endp;
2123 char *nstore = (char *) alloca (strlen (temp) + 3);
2125 startp = endp = temp;
2128 if (*endp == PATH_SEPARATOR || *endp == 0)
2130 strncpy (nstore, startp, endp-startp);
2133 strcpy (nstore, "./");
2135 else if (endp[-1] != '/')
2137 nstore[endp-startp] = '/';
2138 nstore[endp-startp+1] = 0;
2141 nstore[endp-startp] = 0;
2142 add_prefix (&exec_prefix, nstore, 0, 0, NULL_PTR);
2145 endp = startp = endp + 1;
2152 temp = getenv ("LIBRARY_PATH");
2155 char *startp, *endp;
2156 char *nstore = (char *) alloca (strlen (temp) + 3);
2158 startp = endp = temp;
2161 if (*endp == PATH_SEPARATOR || *endp == 0)
2163 strncpy (nstore, startp, endp-startp);
2166 strcpy (nstore, "./");
2168 else if (endp[-1] != '/')
2170 nstore[endp-startp] = '/';
2171 nstore[endp-startp+1] = 0;
2174 nstore[endp-startp] = 0;
2175 add_prefix (&startfile_prefix, nstore, 0, 0, NULL_PTR);
2178 endp = startp = endp + 1;
2185 /* Use LPATH like LIBRARY_PATH (for the CMU build program). */
2186 temp = getenv ("LPATH");
2189 char *startp, *endp;
2190 char *nstore = (char *) alloca (strlen (temp) + 3);
2192 startp = endp = temp;
2195 if (*endp == PATH_SEPARATOR || *endp == 0)
2197 strncpy (nstore, startp, endp-startp);
2200 strcpy (nstore, "./");
2202 else if (endp[-1] != '/')
2204 nstore[endp-startp] = '/';
2205 nstore[endp-startp+1] = 0;
2208 nstore[endp-startp] = 0;
2209 add_prefix (&startfile_prefix, nstore, 0, 0, NULL_PTR);
2212 endp = startp = endp + 1;
2219 /* Convert new-style -- options to old-style. */
2220 translate_options (&argc, &argv);
2222 /* Scan argv twice. Here, the first time, just count how many switches
2223 there will be in their vector, and how many input files in theirs.
2224 Here we also parse the switches that cc itself uses (e.g. -v). */
2226 for (i = 1; i < argc; i++)
2228 if (! strcmp (argv[i], "-dumpspecs"))
2230 printf ("*asm:\n%s\n\n", asm_spec);
2231 printf ("*asm_final:\n%s\n\n", asm_final_spec);
2232 printf ("*cpp:\n%s\n\n", cpp_spec);
2233 printf ("*cc1:\n%s\n\n", cc1_spec);
2234 printf ("*cc1plus:\n%s\n\n", cc1plus_spec);
2235 printf ("*endfile:\n%s\n\n", endfile_spec);
2236 printf ("*link:\n%s\n\n", link_spec);
2237 printf ("*lib:\n%s\n\n", lib_spec);
2238 printf ("*startfile:\n%s\n\n", startfile_spec);
2239 printf ("*switches_need_spaces:\n%s\n\n", switches_need_spaces);
2240 printf ("*signed_char:\n%s\n\n", signed_char_spec);
2241 printf ("*predefines:\n%s\n\n", cpp_predefines);
2242 printf ("*cross_compile:\n%d\n\n", cross_compile);
2246 else if (! strcmp (argv[i], "-dumpversion"))
2248 printf ("%s\n", version_string);
2251 else if (! strcmp (argv[i], "-print-libgcc-file-name"))
2253 print_libgcc_file_name = 1;
2255 else if (! strcmp (argv[i], "-Xlinker"))
2257 /* Pass the argument of this option to the linker when we link. */
2260 fatal ("argument to `-Xlinker' is missing");
2263 if (!linker_options)
2265 = (char **) xmalloc (n_linker_options * sizeof (char **));
2268 = (char **) xrealloc (linker_options,
2269 n_linker_options * sizeof (char **));
2271 linker_options[n_linker_options - 1] = argv[++i];
2273 else if (! strncmp (argv[i], "-Wl,", 4))
2276 /* Pass the rest of this option to the linker when we link. */
2279 if (!linker_options)
2281 = (char **) xmalloc (n_linker_options * sizeof (char **));
2284 = (char **) xrealloc (linker_options,
2285 n_linker_options * sizeof (char **));
2287 /* Split the argument at commas. */
2289 for (j = 4; argv[i][j]; j++)
2290 if (argv[i][j] == ',')
2292 linker_options[n_linker_options - 1]
2293 = save_string (argv[i] + prev, j - prev);
2296 = (char **) xrealloc (linker_options,
2297 n_linker_options * sizeof (char **));
2300 /* Record the part after the last comma. */
2301 linker_options[n_linker_options - 1] = argv[i] + prev;
2303 else if (! strncmp (argv[i], "-Wa,", 4))
2306 /* Pass the rest of this option to the assembler. */
2308 n_assembler_options++;
2309 if (!assembler_options)
2311 = (char **) xmalloc (n_assembler_options * sizeof (char **));
2314 = (char **) xrealloc (assembler_options,
2315 n_assembler_options * sizeof (char **));
2317 /* Split the argument at commas. */
2319 for (j = 4; argv[i][j]; j++)
2320 if (argv[i][j] == ',')
2322 assembler_options[n_assembler_options - 1]
2323 = save_string (argv[i] + prev, j - prev);
2324 n_assembler_options++;
2326 = (char **) xrealloc (assembler_options,
2327 n_assembler_options * sizeof (char **));
2330 /* Record the part after the last comma. */
2331 assembler_options[n_assembler_options - 1] = argv[i] + prev;
2333 else if (argv[i][0] == '+' && argv[i][1] == 'e')
2334 /* The +e options to the C++ front-end. */
2336 else if (argv[i][0] == '-' && argv[i][1] != 0 && argv[i][1] != 'l')
2338 register char *p = &argv[i][1];
2339 register int c = *p;
2344 if (p[1] == 0 && i + 1 == argc)
2345 fatal ("argument to `-b' is missing");
2347 spec_machine = argv[++i];
2349 spec_machine = p + 1;
2354 int *temp = (int *) xmalloc (sizeof (int));
2356 if (p[1] == 0 && i + 1 == argc)
2357 fatal ("argument to `-B' is missing");
2362 add_prefix (&exec_prefix, value, 1, 0, temp);
2363 add_prefix (&startfile_prefix, value, 1, 0, temp);
2367 case 'v': /* Print our subcommands and print versions. */
2369 /* If they do anything other than exactly `-v', don't set
2370 verbose_flag; rather, continue on to give the error. */
2377 if (p[1] == 0 && i + 1 == argc)
2378 fatal ("argument to `-V' is missing");
2380 spec_version = argv[++i];
2382 spec_version = p + 1;
2386 if (!strcmp (p, "save-temps"))
2388 save_temps_flag = 1;
2395 if (SWITCH_TAKES_ARG (c) > (p[1] != 0))
2396 i += SWITCH_TAKES_ARG (c) - (p[1] != 0);
2397 else if (WORD_SWITCH_TAKES_ARG (p))
2398 i += WORD_SWITCH_TAKES_ARG (p);
2405 /* Set up the search paths before we go looking for config files. */
2407 /* These come before the md prefixes so that we will find gcc's subcommands
2408 (such as cpp) rather than those of the host system. */
2409 /* Use 2 as fourth arg meaning try just the machine as a suffix,
2410 as well as trying the machine and the version. */
2411 add_prefix (&exec_prefix, standard_exec_prefix, 0, 2, NULL_PTR);
2412 add_prefix (&exec_prefix, standard_exec_prefix_1, 0, 2, NULL_PTR);
2414 add_prefix (&startfile_prefix, standard_exec_prefix, 0, 1, NULL_PTR);
2415 add_prefix (&startfile_prefix, standard_exec_prefix_1, 0, 1, NULL_PTR);
2417 tooldir_prefix = concat (tooldir_base_prefix, spec_machine, "/");
2419 /* If tooldir is relative, base it on exec_prefix. A relative
2420 tooldir lets us move the installed tree as a unit.
2422 If GCC_EXEC_PREFIX is defined, then we want to add two relative
2423 directories, so that we can search both the user specified directory
2424 and the standard place. */
2426 if (*tooldir_prefix != '/')
2428 if (gcc_exec_prefix)
2430 char *gcc_exec_tooldir_prefix
2431 = concat (concat (gcc_exec_prefix, spec_machine, "/"),
2432 concat (spec_version, "/", tooldir_prefix),
2435 add_prefix (&exec_prefix, concat (gcc_exec_tooldir_prefix, "bin", "/"),
2437 add_prefix (&startfile_prefix, concat (gcc_exec_tooldir_prefix, "lib", "/"),
2441 tooldir_prefix = concat (concat (standard_exec_prefix, spec_machine, "/"),
2442 concat (spec_version, "/", tooldir_prefix),
2446 add_prefix (&exec_prefix, concat (tooldir_prefix, "bin", "/"),
2448 add_prefix (&startfile_prefix, concat (tooldir_prefix, "lib", "/"),
2451 /* More prefixes are enabled in main, after we read the specs file
2452 and determine whether this is cross-compilation or not. */
2455 /* Then create the space for the vectors and scan again. */
2457 switches = ((struct switchstr *)
2458 xmalloc ((n_switches + 1) * sizeof (struct switchstr)));
2459 infiles = (struct infile *) xmalloc ((n_infiles + 1) * sizeof (struct infile));
2462 last_language_n_infiles = -1;
2464 /* This, time, copy the text of each switch and store a pointer
2465 to the copy in the vector of switches.
2466 Store all the infiles in their vector. */
2468 for (i = 1; i < argc; i++)
2470 /* Just skip the switches that were handled by the preceding loop. */
2471 if (!strcmp (argv[i], "-Xlinker"))
2473 else if (! strncmp (argv[i], "-Wl,", 4))
2475 else if (! strncmp (argv[i], "-Wa,", 4))
2477 else if (! strcmp (argv[i], "-print-libgcc-file-name"))
2479 else if (argv[i][0] == '+' && argv[i][1] == 'e')
2481 /* Compensate for the +e options to the C++ front-end;
2482 they're there simply for cfront call-compatibility. We do
2483 some magic in default_compilers to pass them down properly.
2484 Note we deliberately start at the `+' here, to avoid passing
2485 -e0 or -e1 down into the linker. */
2486 switches[n_switches].part1 = &argv[i][0];
2487 switches[n_switches].args = 0;
2488 switches[n_switches].valid = 0;
2491 else if (argv[i][0] == '-' && argv[i][1] != 0 && argv[i][1] != 'l')
2493 register char *p = &argv[i][1];
2494 register int c = *p;
2496 if (c == 'B' || c == 'b' || c == 'V')
2498 /* Skip a separate arg, if any. */
2505 if (p[1] == 0 && i + 1 == argc)
2506 fatal ("argument to `-x' is missing");
2508 spec_lang = argv[++i];
2511 if (! strcmp (spec_lang, "none"))
2512 /* Suppress the warning if -xnone comes after the last input file,
2513 because alternate command interfaces like g++ might find it
2514 useful to place -xnone after each input file. */
2517 last_language_n_infiles = n_infiles;
2520 switches[n_switches].part1 = p;
2521 /* Deal with option arguments in separate argv elements. */
2522 if ((SWITCH_TAKES_ARG (c) > (p[1] != 0))
2523 || WORD_SWITCH_TAKES_ARG (p))
2526 int n_args = WORD_SWITCH_TAKES_ARG (p);
2530 /* Count only the option arguments in separate argv elements. */
2531 n_args = SWITCH_TAKES_ARG (c) - (p[1] != 0);
2533 if (i + n_args >= argc)
2534 fatal ("argument to `-%s' is missing", p);
2535 switches[n_switches].args
2536 = (char **) xmalloc ((n_args + 1) * sizeof (char *));
2538 switches[n_switches].args[j++] = argv[++i];
2539 /* Null-terminate the vector. */
2540 switches[n_switches].args[j] = 0;
2542 else if (*switches_need_spaces != 0 && (c == 'o' || c == 'L'))
2544 /* On some systems, ld cannot handle -o or -L without space.
2545 So split the -o or -L from its argument. */
2546 switches[n_switches].part1 = (c == 'o' ? "o" : "L");
2547 switches[n_switches].args = (char **) xmalloc (2 * sizeof (char *));
2548 switches[n_switches].args[0] = xmalloc (strlen (p));
2549 strcpy (switches[n_switches].args[0], &p[1]);
2550 switches[n_switches].args[1] = 0;
2553 switches[n_switches].args = 0;
2554 switches[n_switches].valid = 0;
2555 /* This is always valid, since gcc.c itself understands it. */
2556 if (!strcmp (p, "save-temps"))
2557 switches[n_switches].valid = 1;
2562 if ((argv[i][0] != '-' || argv[i][1] != 'l')
2563 && strcmp (argv[i], "-")
2564 && access (argv[i], R_OK) < 0)
2566 perror_with_name (argv[i]);
2571 infiles[n_infiles].language = spec_lang;
2572 infiles[n_infiles++].name = argv[i];
2577 if (n_infiles == last_language_n_infiles && spec_lang != 0)
2578 error ("Warning: `-x %s' after last input file has no effect", spec_lang);
2580 switches[n_switches].part1 = 0;
2581 infiles[n_infiles].name = 0;
2583 /* If we have a GCC_EXEC_PREFIX envvar, modify it for cpp's sake. */
2584 if (gcc_exec_prefix)
2586 temp = (char *) xmalloc (strlen (gcc_exec_prefix) + strlen (spec_version)
2587 + strlen (spec_machine) + 3);
2588 strcpy (temp, gcc_exec_prefix);
2589 strcat (temp, spec_machine);
2591 strcat (temp, spec_version);
2593 gcc_exec_prefix = temp;
2597 /* Process a spec string, accumulating and running commands. */
2599 /* These variables describe the input file name.
2600 input_file_number is the index on outfiles of this file,
2601 so that the output file name can be stored for later use by %o.
2602 input_basename is the start of the part of the input file
2603 sans all directory names, and basename_length is the number
2604 of characters starting there excluding the suffix .c or whatever. */
2606 static char *input_filename;
2607 static int input_file_number;
2608 static int input_filename_length;
2609 static int basename_length;
2610 static char *input_basename;
2611 static char *input_suffix;
2613 /* These are variables used within do_spec and do_spec_1. */
2615 /* Nonzero if an arg has been started and not yet terminated
2616 (with space, tab or newline). */
2617 static int arg_going;
2619 /* Nonzero means %d or %g has been seen; the next arg to be terminated
2620 is a temporary file name. */
2621 static int delete_this_arg;
2623 /* Nonzero means %w has been seen; the next arg to be terminated
2624 is the output file name of this compilation. */
2625 static int this_is_output_file;
2627 /* Nonzero means %s has been seen; the next arg to be terminated
2628 is the name of a library file and we should try the standard
2629 search dirs for it. */
2630 static int this_is_library_file;
2632 /* Nonzero means that the input of this command is coming from a pipe. */
2633 static int input_from_pipe;
2635 /* Process the spec SPEC and run the commands specified therein.
2636 Returns 0 if the spec is successfully processed; -1 if failed. */
2646 delete_this_arg = 0;
2647 this_is_output_file = 0;
2648 this_is_library_file = 0;
2649 input_from_pipe = 0;
2651 value = do_spec_1 (spec, 0, NULL_PTR);
2653 /* Force out any unfinished command.
2654 If -pipe, this forces out the last command if it ended in `|'. */
2657 if (argbuf_index > 0 && !strcmp (argbuf[argbuf_index - 1], "|"))
2660 if (argbuf_index > 0)
2667 /* Process the sub-spec SPEC as a portion of a larger spec.
2668 This is like processing a whole spec except that we do
2669 not initialize at the beginning and we do not supply a
2670 newline by default at the end.
2671 INSWITCH nonzero means don't process %-sequences in SPEC;
2672 in this case, % is treated as an ordinary character.
2673 This is used while substituting switches.
2674 INSWITCH nonzero also causes SPC not to terminate an argument.
2676 Value is zero unless a line was finished
2677 and the command on that line reported an error. */
2680 do_spec_1 (spec, inswitch, soft_matched_part)
2683 char *soft_matched_part;
2685 register char *p = spec;
2692 /* If substituting a switch, treat all chars like letters.
2693 Otherwise, NL, SPC, TAB and % are special. */
2694 switch (inswitch ? 'a' : c)
2697 /* End of line: finish any pending argument,
2698 then run the pending command if one has been started. */
2701 obstack_1grow (&obstack, 0);
2702 string = obstack_finish (&obstack);
2703 if (this_is_library_file)
2704 string = find_file (string);
2705 store_arg (string, delete_this_arg, this_is_output_file);
2706 if (this_is_output_file)
2707 outfiles[input_file_number] = string;
2711 if (argbuf_index > 0 && !strcmp (argbuf[argbuf_index - 1], "|"))
2714 for (i = 0; i < n_switches; i++)
2715 if (!strcmp (switches[i].part1, "pipe"))
2718 /* A `|' before the newline means use a pipe here,
2719 but only if -pipe was specified.
2720 Otherwise, execute now and don't pass the `|' as an arg. */
2723 input_from_pipe = 1;
2724 switches[i].valid = 1;
2731 if (argbuf_index > 0)
2737 /* Reinitialize for a new command, and for a new argument. */
2740 delete_this_arg = 0;
2741 this_is_output_file = 0;
2742 this_is_library_file = 0;
2743 input_from_pipe = 0;
2747 /* End any pending argument. */
2750 obstack_1grow (&obstack, 0);
2751 string = obstack_finish (&obstack);
2752 if (this_is_library_file)
2753 string = find_file (string);
2754 store_arg (string, delete_this_arg, this_is_output_file);
2755 if (this_is_output_file)
2756 outfiles[input_file_number] = string;
2760 obstack_1grow (&obstack, c);
2766 /* Space or tab ends an argument if one is pending. */
2769 obstack_1grow (&obstack, 0);
2770 string = obstack_finish (&obstack);
2771 if (this_is_library_file)
2772 string = find_file (string);
2773 store_arg (string, delete_this_arg, this_is_output_file);
2774 if (this_is_output_file)
2775 outfiles[input_file_number] = string;
2777 /* Reinitialize for a new argument. */
2779 delete_this_arg = 0;
2780 this_is_output_file = 0;
2781 this_is_library_file = 0;
2788 fatal ("Invalid specification! Bug in cc.");
2791 obstack_grow (&obstack, input_basename, basename_length);
2796 delete_this_arg = 2;
2799 /* Dump out the directories specified with LIBRARY_PATH,
2800 followed by the absolute directories
2801 that we search for startfiles. */
2804 struct prefix_list *pl = startfile_prefix.plist;
2806 char *buffer = (char *) xmalloc (bufsize);
2809 for (; pl; pl = pl->next)
2811 #ifdef RELATIVE_PREFIX_NOT_LINKDIR
2812 /* Used on systems which record the specified -L dirs
2813 and use them to search for dynamic linking. */
2814 /* Relative directories always come from -B,
2815 and it is better not to use them for searching
2816 at run time. In particular, stage1 loses */
2817 if (pl->prefix[0] != '/')
2822 if (is_directory (pl->prefix, machine_suffix, 1))
2824 do_spec_1 ("-L", 0, NULL_PTR);
2825 #ifdef SPACE_AFTER_L_OPTION
2826 do_spec_1 (" ", 0, NULL_PTR);
2828 do_spec_1 (pl->prefix, 1, NULL_PTR);
2829 /* Remove slash from machine_suffix. */
2830 if (strlen (machine_suffix) >= bufsize)
2831 bufsize = strlen (machine_suffix) * 2 + 1;
2832 buffer = (char *) xrealloc (buffer, bufsize);
2833 strcpy (buffer, machine_suffix);
2834 idx = strlen (buffer);
2835 if (buffer[idx - 1] == '/')
2836 buffer[idx - 1] = 0;
2837 do_spec_1 (buffer, 1, NULL_PTR);
2838 /* Make this a separate argument. */
2839 do_spec_1 (" ", 0, NULL_PTR);
2842 if (!pl->require_machine_suffix)
2844 if (is_directory (pl->prefix, "", 1))
2846 do_spec_1 ("-L", 0, NULL_PTR);
2847 #ifdef SPACE_AFTER_L_OPTION
2848 do_spec_1 (" ", 0, NULL_PTR);
2850 /* Remove slash from pl->prefix. */
2851 if (strlen (pl->prefix) >= bufsize)
2852 bufsize = strlen (pl->prefix) * 2 + 1;
2853 buffer = (char *) xrealloc (buffer, bufsize);
2854 strcpy (buffer, pl->prefix);
2855 idx = strlen (buffer);
2856 if (buffer[idx - 1] == '/')
2857 buffer[idx - 1] = 0;
2858 do_spec_1 (buffer, 1, NULL_PTR);
2859 /* Make this a separate argument. */
2860 do_spec_1 (" ", 0, NULL_PTR);
2869 /* {...:%efoo} means report an error with `foo' as error message
2870 and don't execute any more commands for this file. */
2874 while (*p != 0 && *p != '\n') p++;
2875 buf = (char *) alloca (p - q + 1);
2876 strncpy (buf, q, p - q);
2886 if (save_temps_flag)
2887 obstack_grow (&obstack, input_basename, basename_length);
2890 #ifdef MKTEMP_EACH_FILE
2891 /* ??? This has a problem: the total number of
2892 values mktemp can return is limited.
2893 That matters for the names of object files.
2894 In 2.4, do something about that. */
2895 struct temp_name *t;
2897 while (*p == '.' || isalpha (*p))
2900 /* See if we already have an association of %g/%u/%U and
2902 for (t = temp_names; t; t = t->next)
2903 if (t->length == p - suffix
2904 && strncmp (t->suffix, suffix, p - suffix) == 0
2905 && t->unique == (c != 'g'))
2908 /* Make a new association if needed. %u requires one. */
2909 if (t == 0 || c == 'u')
2913 t = (struct temp_name *) xmalloc (sizeof (struct temp_name));
2914 t->next = temp_names;
2917 t->length = p - suffix;
2918 t->suffix = save_string (suffix, p - suffix);
2919 t->unique = (c != 'g');
2920 choose_temp_base ();
2921 t->filename = temp_filename;
2922 t->filename_length = temp_filename_length;
2925 obstack_grow (&obstack, t->filename, t->filename_length);
2926 delete_this_arg = 1;
2928 obstack_grow (&obstack, temp_filename, temp_filename_length);
2929 if (c == 'u' || c == 'U')
2935 sprintf (buff, "%d", unique);
2936 obstack_grow (&obstack, buff, strlen (buff));
2939 delete_this_arg = 1;
2945 obstack_grow (&obstack, input_filename, input_filename_length);
2950 if (gcc_exec_prefix)
2952 do_spec_1 ("-iprefix", 1, NULL_PTR);
2953 /* Make this a separate argument. */
2954 do_spec_1 (" ", 0, NULL_PTR);
2955 do_spec_1 (gcc_exec_prefix, 1, NULL_PTR);
2956 do_spec_1 (" ", 0, NULL_PTR);
2963 for (f = 0; f < n_infiles; f++)
2964 store_arg (outfiles[f], 0, 0);
2969 this_is_library_file = 1;
2973 this_is_output_file = 1;
2978 int index = argbuf_index;
2979 /* Handle the {...} following the %W. */
2982 p = handle_braces (p + 1);
2985 /* If any args were output, mark the last one for deletion
2987 if (argbuf_index != index)
2988 record_temp_file (argbuf[argbuf_index - 1], 0, 1);
2992 /* %x{OPTION} records OPTION for %X to output. */
2998 /* Skip past the option value and make a copy. */
3003 string = save_string (p1 + 1, p - p1 - 2);
3005 /* See if we already recorded this option. */
3006 for (i = 0; i < n_linker_options; i++)
3007 if (! strcmp (string, linker_options[i]))
3013 /* This option is new; add it. */
3015 if (!linker_options)
3017 = (char **) xmalloc (n_linker_options * sizeof (char **));
3020 = (char **) xrealloc (linker_options,
3021 n_linker_options * sizeof (char **));
3023 linker_options[n_linker_options - 1] = string;
3027 /* Dump out the options accumulated previously using %x,
3028 -Xlinker and -Wl,. */
3030 for (i = 0; i < n_linker_options; i++)
3032 do_spec_1 (linker_options[i], 1, NULL_PTR);
3033 /* Make each accumulated option a separate argument. */
3034 do_spec_1 (" ", 0, NULL_PTR);
3038 /* Dump out the options accumulated previously using -Wa,. */
3040 for (i = 0; i < n_assembler_options; i++)
3042 do_spec_1 (assembler_options[i], 1, NULL_PTR);
3043 /* Make each accumulated option a separate argument. */
3044 do_spec_1 (" ", 0, NULL_PTR);
3048 /* Here are digits and numbers that just process
3049 a certain constant string as a spec. */
3052 value = do_spec_1 (cc1_spec, 0, NULL_PTR);
3058 value = do_spec_1 (cc1plus_spec, 0, NULL_PTR);
3064 value = do_spec_1 (asm_spec, 0, NULL_PTR);
3070 value = do_spec_1 (asm_final_spec, 0, NULL_PTR);
3076 value = do_spec_1 (signed_char_spec, 0, NULL_PTR);
3082 value = do_spec_1 (cpp_spec, 0, NULL_PTR);
3088 value = do_spec_1 (endfile_spec, 0, NULL_PTR);
3094 value = do_spec_1 (link_spec, 0, NULL_PTR);
3100 value = do_spec_1 (lib_spec, 0, NULL_PTR);
3107 char *x = (char *) alloca (strlen (cpp_predefines) + 1);
3111 /* Copy all of the -D options in CPP_PREDEFINES into BUF. */
3115 if (! strncmp (y, "-D", 2))
3116 /* Copy the whole option. */
3117 while (*y && *y != ' ' && *y != '\t')
3119 else if (*y == ' ' || *y == '\t')
3120 /* Copy whitespace to the result. */
3122 /* Don't copy other options. */
3129 value = do_spec_1 (buf, 0, NULL_PTR);
3137 char *x = (char *) alloca (strlen (cpp_predefines) * 4 + 1);
3141 /* Copy all of CPP_PREDEFINES into BUF,
3142 but put __ after every -D and at the end of each arg. */
3146 if (! strncmp (y, "-D", 2))
3153 if (strncmp (y, "__", 2))
3155 /* Stick __ at front of macro name. */
3158 /* Arrange to stick __ at the end as well. */
3162 /* Copy the macro name. */
3163 while (*y && *y != '=' && *y != ' ' && *y != '\t')
3172 /* Copy the value given, if any. */
3173 while (*y && *y != ' ' && *y != '\t')
3176 else if (*y == ' ' || *y == '\t')
3177 /* Copy whitespace to the result. */
3179 /* Don't copy -A options */
3185 /* Copy all of CPP_PREDEFINES into BUF,
3186 but put __ after every -D. */
3190 if (! strncmp (y, "-D", 2))
3195 if (strncmp (y, "__", 2))
3197 /* Stick __ at front of macro name. */
3202 /* Copy the macro name. */
3203 while (*y && *y != '=' && *y != ' ' && *y != '\t')
3206 /* Copy the value given, if any. */
3207 while (*y && *y != ' ' && *y != '\t')
3210 else if (*y == ' ' || *y == '\t')
3211 /* Copy whitespace to the result. */
3213 /* Don't copy -A options */
3219 /* Copy all of the -A options in CPP_PREDEFINES into BUF. */
3223 if (! strncmp (y, "-A", 2))
3224 /* Copy the whole option. */
3225 while (*y && *y != ' ' && *y != '\t')
3227 else if (*y == ' ' || *y == '\t')
3228 /* Copy whitespace to the result. */
3230 /* Don't copy other options. */
3237 value = do_spec_1 (buf, 0, NULL_PTR);
3244 value = do_spec_1 (startfile_spec, 0, NULL_PTR);
3249 /* Here we define characters other than letters and digits. */
3252 p = handle_braces (p);
3258 obstack_1grow (&obstack, '%');
3262 do_spec_1 (soft_matched_part, 1, NULL_PTR);
3263 do_spec_1 (" ", 0, NULL_PTR);
3266 /* Process a string found as the value of a spec given by name.
3267 This feature allows individual machine descriptions
3268 to add and use their own specs.
3269 %[...] modifies -D options the way %P does;
3270 %(...) uses the spec unmodified. */
3275 struct spec_list *sl;
3278 /* The string after the S/P is the name of a spec that is to be
3280 while (*p && *p != ')' && *p != ']')
3283 /* See if it's in the list */
3284 for (len = p - name, sl = specs; sl; sl = sl->next)
3285 if (strncmp (sl->name, name, len) == 0 && !sl->name[len])
3295 value = do_spec_1 (name, 0, NULL_PTR);
3301 char *x = (char *) alloca (strlen (name) * 2 + 1);
3305 /* Copy all of NAME into BUF, but put __ after
3306 every -D and at the end of each arg, */
3309 if (! strncmp (y, "-D", 2))
3317 else if (*y == ' ' || *y == 0)
3331 value = do_spec_1 (buf, 0, NULL_PTR);
3337 /* Discard the closing paren or bracket. */
3344 if (input_from_pipe)
3345 do_spec_1 ("-", 0, NULL_PTR);
3354 /* Backslash: treat next character as ordinary. */
3359 /* Ordinary character: put it into the current argument. */
3360 obstack_1grow (&obstack, c);
3364 return 0; /* End of string */
3367 /* Return 0 if we call do_spec_1 and that returns -1. */
3380 /* A `|' after the open-brace means,
3381 if the test fails, output a single minus sign rather than nothing.
3382 This is used in %{|!pipe:...}. */
3386 /* A `!' after the open-brace negates the condition:
3387 succeed if the specified switch is not present. */
3391 /* A `.' after the open-brace means test against the current suffix. */
3401 while (*p != ':' && *p != '}') p++;
3404 register int count = 1;
3422 int found = (input_suffix != 0
3423 && strlen (input_suffix) == p - filter
3424 && strncmp (input_suffix, filter, p - filter) == 0);
3430 && do_spec_1 (save_string (p + 1, q - p - 2), 0, NULL_PTR) < 0)
3435 else if (p[-1] == '*' && p[0] == '}')
3437 /* Substitute all matching switches as separate args. */
3440 for (i = 0; i < n_switches; i++)
3441 if (!strncmp (switches[i].part1, filter, p - filter))
3446 /* Test for presence of the specified switch. */
3450 /* If name specified ends in *, as in {x*:...},
3451 check for %* and handle that case. */
3452 if (p[-1] == '*' && !negate)
3457 /* First see whether we have %*. */
3461 if (*r == '%' && r[1] == '*')
3465 /* If we do, handle that case. */
3468 /* Substitute all matching switches as separate args.
3469 But do this by substituting for %*
3470 in the text that follows the colon. */
3472 unsigned hard_match_len = p - filter - 1;
3473 char *string = save_string (p + 1, q - p - 2);
3475 for (i = 0; i < n_switches; i++)
3476 if (!strncmp (switches[i].part1, filter, hard_match_len))
3478 do_spec_1 (string, 0, &switches[i].part1[hard_match_len]);
3479 /* Pass any arguments this switch has. */
3487 /* If name specified ends in *, as in {x*:...},
3488 check for presence of any switch name starting with x. */
3491 for (i = 0; i < n_switches; i++)
3493 unsigned hard_match_len = p - filter - 1;
3495 if (!strncmp (switches[i].part1, filter, hard_match_len))
3497 switches[i].valid = 1;
3502 /* Otherwise, check for presence of exact name specified. */
3505 for (i = 0; i < n_switches; i++)
3507 if (!strncmp (switches[i].part1, filter, p - filter)
3508 && switches[i].part1[p - filter] == 0)
3510 switches[i].valid = 1;
3517 /* If it is as desired (present for %{s...}, absent for %{-s...})
3518 then substitute either the switch or the specified
3519 conditional text. */
3520 if (present != negate)
3528 if (do_spec_1 (save_string (p + 1, q - p - 2), 0, NULL_PTR) < 0)
3534 /* Here if a %{|...} conditional fails: output a minus sign,
3535 which means "standard output" or "standard input". */
3536 do_spec_1 ("-", 0, NULL_PTR);
3543 /* Pass a switch to the current accumulating command
3544 in the same form that we received it.
3545 SWITCHNUM identifies the switch; it is an index into
3546 the vector of switches gcc received, which is `switches'.
3547 This cannot fail since it never finishes a command line.
3549 If OMIT_FIRST_WORD is nonzero, then we omit .part1 of the argument. */
3552 give_switch (switchnum, omit_first_word)
3554 int omit_first_word;
3556 if (!omit_first_word)
3558 do_spec_1 ("-", 0, NULL_PTR);
3559 do_spec_1 (switches[switchnum].part1, 1, NULL_PTR);
3561 do_spec_1 (" ", 0, NULL_PTR);
3562 if (switches[switchnum].args != 0)
3565 for (p = switches[switchnum].args; *p; p++)
3567 do_spec_1 (*p, 1, NULL_PTR);
3568 do_spec_1 (" ", 0, NULL_PTR);
3571 switches[switchnum].valid = 1;
3574 /* Search for a file named NAME trying various prefixes including the
3575 user's -B prefix and some standard ones.
3576 Return the absolute file name found. If nothing is found, return NAME. */
3584 newname = find_a_file (&startfile_prefix, name, R_OK);
3585 return newname ? newname : name;
3588 /* Determine whether a directory exists. If LINKER, return 0 for
3589 certain fixed names not needed by the linker. If not LINKER, it is
3590 only important to return 0 if the host machine has a small ARG_MAX
3594 is_directory (path1, path2, linker)
3599 int len1 = strlen (path1);
3600 int len2 = strlen (path2);
3601 char *path = (char *) alloca (3 + len1 + len2);
3605 #ifndef SMALL_ARG_MAX
3610 /* Construct the path from the two parts. Ensure the string ends with "/.".
3611 The resulting path will be a directory even if the given path is a
3613 bcopy (path1, path, len1);
3614 bcopy (path2, path + len1, len2);
3615 cp = path + len1 + len2;
3621 /* Exclude directories that the linker is known to search. */
3623 && ((cp - path == 6 && strcmp (path, "/lib/.") == 0)
3624 || (cp - path == 10 && strcmp (path, "/usr/lib/.") == 0)))
3627 return (stat (path, &st) >= 0 && S_ISDIR (st.st_mode));
3630 /* On fatal signals, delete all the temporary files. */
3633 fatal_error (signum)
3636 signal (signum, SIG_DFL);
3637 delete_failure_queue ();
3638 delete_temp_files ();
3639 /* Get the same signal again, this time not handled,
3640 so its normal effect occurs. */
3641 kill (getpid (), signum);
3652 int linker_was_run = 0;
3653 char *explicit_link_files;
3657 p = argv[0] + strlen (argv[0]);
3658 while (p != argv[0] && p[-1] != '/') --p;
3661 if (signal (SIGINT, SIG_IGN) != SIG_IGN)
3662 signal (SIGINT, fatal_error);
3664 if (signal (SIGHUP, SIG_IGN) != SIG_IGN)
3665 signal (SIGHUP, fatal_error);
3667 if (signal (SIGTERM, SIG_IGN) != SIG_IGN)
3668 signal (SIGTERM, fatal_error);
3670 if (signal (SIGPIPE, SIG_IGN) != SIG_IGN)
3671 signal (SIGPIPE, fatal_error);
3675 argbuf = (char **) xmalloc (argbuf_length * sizeof (char *));
3677 obstack_init (&obstack);
3679 /* Set up to remember the pathname of gcc and any options
3680 needed for collect. We use argv[0] instead of programname because
3681 we need the complete pathname. */
3682 obstack_init (&collect_obstack);
3683 obstack_grow (&collect_obstack, "COLLECT_GCC=", sizeof ("COLLECT_GCC=")-1);
3684 obstack_grow (&collect_obstack, argv[0], strlen (argv[0])+1);
3685 putenv (obstack_finish (&collect_obstack));
3687 /* Choose directory for temp files. */
3689 choose_temp_base ();
3691 /* Make a table of what switches there are (switches, n_switches).
3692 Make a table of specified input files (infiles, n_infiles).
3693 Decode switches that are handled locally. */
3695 process_command (argc, argv);
3697 /* Initialize the vector of specs to just the default.
3698 This means one element containing 0s, as a terminator. */
3700 compilers = (struct compiler *) xmalloc (sizeof default_compilers);
3701 bcopy (default_compilers, compilers, sizeof default_compilers);
3702 n_compilers = n_default_compilers;
3704 /* Read specs from a file if there is one. */
3706 machine_suffix = concat (spec_machine, "/", concat (spec_version, "/", ""));
3707 just_machine_suffix = concat (spec_machine, "/", "");
3709 specs_file = find_a_file (&startfile_prefix, "specs", R_OK);
3710 /* Read the specs file unless it is a default one. */
3711 if (specs_file != 0 && strcmp (specs_file, "specs"))
3712 read_specs (specs_file);
3714 /* If not cross-compiling, look for startfiles in the standard places. */
3715 /* The fact that these are done here, after reading the specs file,
3716 means that it cannot be found in these directories.
3717 But that's okay. It should never be there anyway. */
3720 #ifdef MD_EXEC_PREFIX
3721 add_prefix (&exec_prefix, md_exec_prefix, 0, 0, NULL_PTR);
3722 add_prefix (&startfile_prefix, md_exec_prefix, 0, 0, NULL_PTR);
3725 #ifdef MD_STARTFILE_PREFIX
3726 add_prefix (&startfile_prefix, md_startfile_prefix, 0, 0, NULL_PTR);
3729 #ifdef MD_STARTFILE_PREFIX_1
3730 add_prefix (&startfile_prefix, md_startfile_prefix_1, 0, 0, NULL_PTR);
3733 /* If standard_startfile_prefix is relative, base it on
3734 standard_exec_prefix. This lets us move the installed tree
3735 as a unit. If GCC_EXEC_PREFIX is defined, base
3736 standard_startfile_prefix on that as well. */
3737 if (*standard_startfile_prefix == '/')
3738 add_prefix (&startfile_prefix, standard_startfile_prefix, 0, 0,
3742 if (gcc_exec_prefix)
3743 add_prefix (&startfile_prefix,
3744 concat (gcc_exec_prefix,
3745 standard_startfile_prefix,
3748 add_prefix (&startfile_prefix,
3749 concat (standard_exec_prefix,
3751 standard_startfile_prefix),
3755 add_prefix (&startfile_prefix, standard_startfile_prefix_1, 0, 0,
3757 add_prefix (&startfile_prefix, standard_startfile_prefix_2, 0, 0,
3759 #if 0 /* Can cause surprises, and one can use -B./ instead. */
3760 add_prefix (&startfile_prefix, "./", 0, 1, NULL_PTR);
3764 /* Now we have the specs.
3765 Set the `valid' bits for switches that match anything in any spec. */
3767 validate_all_switches ();
3769 /* Warn about any switches that no pass was interested in. */
3771 for (i = 0; i < n_switches; i++)
3772 if (! switches[i].valid)
3773 error ("unrecognized option `-%s'", switches[i].part1);
3775 if (print_libgcc_file_name)
3777 printf ("%s\n", find_file ("libgcc.a"));
3781 /* Obey some of the options. */
3785 fprintf (stderr, "gcc version %s\n", version_string);
3791 fatal ("No input files");
3793 /* Make a place to record the compiler output file names
3794 that correspond to the input files. */
3796 outfiles = (char **) xmalloc (n_infiles * sizeof (char *));
3797 bzero (outfiles, n_infiles * sizeof (char *));
3799 /* Record which files were specified explicitly as link input. */
3801 explicit_link_files = xmalloc (n_infiles);
3802 bzero (explicit_link_files, n_infiles);
3804 for (i = 0; i < n_infiles; i++)
3806 register struct compiler *cp = 0;
3807 int this_file_error = 0;
3809 /* Tell do_spec what to substitute for %i. */
3811 input_filename = infiles[i].name;
3812 input_filename_length = strlen (input_filename);
3813 input_file_number = i;
3815 /* Use the same thing in %o, unless cp->spec says otherwise. */
3817 outfiles[i] = input_filename;
3819 /* Figure out which compiler from the file's suffix. */
3821 cp = lookup_compiler (infiles[i].name, input_filename_length,
3822 infiles[i].language);
3826 /* Ok, we found an applicable compiler. Run its spec. */
3827 /* First say how much of input_filename to substitute for %b */
3831 input_basename = input_filename;
3832 for (p = input_filename; *p; p++)
3834 input_basename = p + 1;
3836 /* Find a suffix starting with the last period,
3837 and set basename_length to exclude that suffix. */
3838 basename_length = strlen (input_basename);
3839 p = input_basename + basename_length;
3840 while (p != input_basename && *p != '.') --p;
3841 if (*p == '.' && p != input_basename)
3843 basename_length = p - input_basename;
3844 input_suffix = p + 1;
3850 for (j = 0; j < sizeof cp->spec / sizeof cp->spec[0]; j++)
3852 len += strlen (cp->spec[j]);
3854 p = (char *) xmalloc (len + 1);
3857 for (j = 0; j < sizeof cp->spec / sizeof cp->spec[0]; j++)
3860 strcpy (p + len, cp->spec[j]);
3861 len += strlen (cp->spec[j]);
3864 value = do_spec (p);
3867 this_file_error = 1;
3870 /* If this file's name does not contain a recognized suffix,
3871 record it as explicit linker input. */
3874 explicit_link_files[i] = 1;
3876 /* Clear the delete-on-failure queue, deleting the files in it
3877 if this compilation failed. */
3879 if (this_file_error)
3881 delete_failure_queue ();
3884 /* If this compilation succeeded, don't delete those files later. */
3885 clear_failure_queue ();
3888 /* Run ld to link all the compiler output files. */
3890 if (error_count == 0)
3892 int tmp = execution_count;
3896 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
3898 putenv_from_prefixes (&exec_prefix, "COMPILER_PATH=");
3899 putenv_from_prefixes (&startfile_prefix, "LIBRARY_PATH=");
3901 /* Build COLLECT_GCC_OPTIONS to have all of the options specified to
3903 obstack_grow (&collect_obstack, "COLLECT_GCC_OPTIONS=",
3904 sizeof ("COLLECT_GCC_OPTIONS=")-1);
3907 for (i = 0; i < n_switches; i++)
3911 obstack_grow (&collect_obstack, " ", 1);
3914 obstack_grow (&collect_obstack, "-", 1);
3915 obstack_grow (&collect_obstack, switches[i].part1,
3916 strlen (switches[i].part1));
3918 for (args = switches[i].args; args && *args; args++)
3920 obstack_grow (&collect_obstack, " ", 1);
3921 obstack_grow (&collect_obstack, *args, strlen (*args));
3924 obstack_grow (&collect_obstack, "\0", 1);
3925 putenv (obstack_finish (&collect_obstack));
3927 value = do_spec (link_command_spec);
3930 linker_was_run = (tmp != execution_count);
3933 /* Warn if a -B option was specified but the prefix was never used. */
3934 unused_prefix_warnings (&exec_prefix);
3935 unused_prefix_warnings (&startfile_prefix);
3937 /* If options said don't run linker,
3938 complain about input files to be given to the linker. */
3940 if (! linker_was_run && error_count == 0)
3941 for (i = 0; i < n_infiles; i++)
3942 if (explicit_link_files[i])
3943 error ("%s: linker input file unused since linking not done",
3946 /* Delete some or all of the temporary files we made. */
3949 delete_failure_queue ();
3950 delete_temp_files ();
3952 exit (error_count > 0 ? (signal_count ? 2 : 1) : 0);
3957 /* Find the proper compilation spec for the file name NAME,
3958 whose length is LENGTH. LANGUAGE is the specified language,
3959 or 0 if none specified. */
3961 static struct compiler *
3962 lookup_compiler (name, length, language)
3967 struct compiler *cp;
3969 /* Look for the language, if one is spec'd. */
3972 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
3976 if (cp->suffix[0] == '@'
3977 && !strcmp (cp->suffix + 1, language))
3981 error ("language %s not recognized", language);
3984 /* Look for a suffix. */
3985 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
3987 if (/* The suffix `-' matches only the file name `-'. */
3988 (!strcmp (cp->suffix, "-") && !strcmp (name, "-"))
3990 (strlen (cp->suffix) < length
3991 /* See if the suffix matches the end of NAME. */
3992 && !strcmp (cp->suffix,
3993 name + length - strlen (cp->suffix))))
3995 if (cp->spec[0][0] == '@')
3997 struct compiler *new;
3998 /* An alias entry maps a suffix to a language.
3999 Search for the language; pass 0 for NAME and LENGTH
4000 to avoid infinite recursion if language not found.
4001 Construct the new compiler spec. */
4002 language = cp->spec[0] + 1;
4003 new = (struct compiler *) xmalloc (sizeof (struct compiler));
4004 new->suffix = cp->suffix;
4005 bcopy (lookup_compiler (NULL_PTR, 0, language)->spec,
4006 new->spec, sizeof new->spec);
4009 /* A non-alias entry: return it. */
4021 register char *value = (char *) malloc (size);
4023 fatal ("virtual memory exhausted");
4028 xrealloc (ptr, size)
4032 register char *value = (char *) realloc (ptr, size);
4034 fatal ("virtual memory exhausted");
4038 /* Return a newly-allocated string whose contents concatenate those of s1, s2, s3. */
4044 int len1 = strlen (s1), len2 = strlen (s2), len3 = strlen (s3);
4045 char *result = xmalloc (len1 + len2 + len3 + 1);
4047 strcpy (result, s1);
4048 strcpy (result + len1, s2);
4049 strcpy (result + len1 + len2, s3);
4050 *(result + len1 + len2 + len3) = 0;
4056 save_string (s, len)
4060 register char *result = xmalloc (len + 1);
4062 bcopy (s, result, len);
4068 pfatal_with_name (name)
4073 if (errno < sys_nerr)
4074 s = concat ("%s: ", sys_errlist[errno], "");
4076 s = "cannot open %s";
4081 perror_with_name (name)
4086 if (errno < sys_nerr)
4087 s = concat ("%s: ", sys_errlist[errno], "");
4089 s = "cannot open %s";
4099 if (errno < sys_nerr)
4100 s = concat ("installation problem, cannot exec %s: ",
4101 sys_errlist[errno], "");
4103 s = "installation problem, cannot exec %s";
4107 /* More 'friendly' abort that prints the line and file.
4108 config.h can #define abort fancy_abort if you like that sort of thing. */
4113 fatal ("Internal gcc abort.");
4118 /* Output an error message and exit */
4128 format = va_arg (ap, char *);
4129 fprintf (stderr, "%s: ", programname);
4130 vfprintf (stderr, format, ap);
4132 fprintf (stderr, "\n");
4133 delete_temp_files ();
4145 format = va_arg (ap, char *);
4146 fprintf (stderr, "%s: ", programname);
4147 vfprintf (stderr, format, ap);
4150 fprintf (stderr, "\n");
4153 #else /* not HAVE_VPRINTF */
4156 fatal (msg, arg1, arg2)
4157 char *msg, *arg1, *arg2;
4159 error (msg, arg1, arg2);
4160 delete_temp_files ();
4165 error (msg, arg1, arg2)
4166 char *msg, *arg1, *arg2;
4168 fprintf (stderr, "%s: ", programname);
4169 fprintf (stderr, msg, arg1, arg2);
4170 fprintf (stderr, "\n");
4173 #endif /* not HAVE_VPRINTF */
4177 validate_all_switches ()
4179 struct compiler *comp;
4182 struct spec_list *spec;
4184 for (comp = compilers; comp->spec[0]; comp++)
4187 for (i = 0; i < sizeof comp->spec / sizeof comp->spec[0] && comp->spec[i]; i++)
4191 if (c == '%' && *p == '{')
4192 /* We have a switch spec. */
4193 validate_switches (p + 1);
4197 /* look through the linked list of extra specs read from the specs file */
4198 for (spec = specs; spec ; spec = spec->next)
4202 if (c == '%' && *p == '{')
4203 /* We have a switch spec. */
4204 validate_switches (p + 1);
4207 p = link_command_spec;
4209 if (c == '%' && *p == '{')
4210 /* We have a switch spec. */
4211 validate_switches (p + 1);
4213 /* Now notice switches mentioned in the machine-specific specs. */
4217 if (c == '%' && *p == '{')
4218 /* We have a switch spec. */
4219 validate_switches (p + 1);
4223 if (c == '%' && *p == '{')
4224 /* We have a switch spec. */
4225 validate_switches (p + 1);
4229 if (c == '%' && *p == '{')
4230 /* We have a switch spec. */
4231 validate_switches (p + 1);
4233 p = signed_char_spec;
4235 if (c == '%' && *p == '{')
4236 /* We have a switch spec. */
4237 validate_switches (p + 1);
4241 if (c == '%' && *p == '{')
4242 /* We have a switch spec. */
4243 validate_switches (p + 1);
4247 if (c == '%' && *p == '{')
4248 /* We have a switch spec. */
4249 validate_switches (p + 1);
4253 if (c == '%' && *p == '{')
4254 /* We have a switch spec. */
4255 validate_switches (p + 1);
4259 if (c == '%' && *p == '{')
4260 /* We have a switch spec. */
4261 validate_switches (p + 1);
4265 if (c == '%' && *p == '{')
4266 /* We have a switch spec. */
4267 validate_switches (p + 1);
4270 /* Look at the switch-name that comes after START
4271 and mark as valid all supplied switches that match it. */
4274 validate_switches (start)
4277 register char *p = start;
4292 while (*p != ':' && *p != '}') p++;
4296 else if (p[-1] == '*')
4298 /* Mark all matching switches as valid. */
4300 for (i = 0; i < n_switches; i++)
4301 if (!strncmp (switches[i].part1, filter, p - filter))
4302 switches[i].valid = 1;
4306 /* Mark an exact matching switch as valid. */
4307 for (i = 0; i < n_switches; i++)
4309 if (!strncmp (switches[i].part1, filter, p - filter)
4310 && switches[i].part1[p - filter] == 0)
4311 switches[i].valid = 1;