1 /* Compiler driver program that can handle many languages.
2 Copyright (C) 1987, 1989, 1992 Free Software Foundation, Inc.
4 This file is part of GNU CC.
6 GNU CC is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2, or (at your option)
11 GNU CC is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with GNU CC; see the file COPYING. If not, write to
18 the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
20 This paragraph is here to try to keep Sun CC from dying.
21 The number of chars here seems crucial!!!! */
23 /* This program is the user interface to the C compiler and possibly to
24 other compilers. It is used because compilation is a complicated procedure
25 which involves running several programs and passing temporary files between
26 them, forwarding the users switches to those programs selectively,
27 and deleting the temporary files at the end.
29 CC recognizes how to compile each input file by suffixes in the file names.
30 Once it knows which kind of compilation to perform, the procedure for
31 compilation is specified by a string called a "spec". */
34 #include <sys/types.h>
38 #include <sys/file.h> /* May get R_OK, etc. on some systems. */
54 /* On MSDOS, write temp files in current dir
55 because there's no place else we can expect to use. */
62 /* Test if something is a normal file. */
64 #define S_ISREG(m) (((m) & S_IFMT) == S_IFREG)
67 /* Test if something is a directory. */
69 #define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
72 /* By default there is no special suffix for executables. */
73 #ifndef EXECUTABLE_SUFFIX
74 #define EXECUTABLE_SUFFIX ""
77 /* By default, colon separates directories in a path. */
78 #ifndef PATH_SEPARATOR
79 #define PATH_SEPARATOR ':'
82 #define obstack_chunk_alloc xmalloc
83 #define obstack_chunk_free free
86 extern char *getenv ();
88 extern int errno, sys_nerr;
89 extern char *sys_errlist[];
91 extern int execv (), execvp ();
93 /* If a stage of compilation returns an exit status >= 1,
94 compilation of that file ceases. */
96 #define MIN_FATAL_STATUS 1
98 /* Flag saying to print the full filename of libgcc.a
99 as found through our usual search mechanism. */
101 static int print_libgcc_file_name;
103 /* Flag indicating whether we should print the command and arguments */
105 static int verbose_flag;
107 /* Nonzero means write "temp" files in source directory
108 and use the source file's name in them, and don't delete them. */
110 static int save_temps_flag;
112 /* The compiler version specified with -V */
114 static char *spec_version;
116 /* The target machine specified with -b. */
118 static char *spec_machine = DEFAULT_TARGET_MACHINE;
120 /* Nonzero if cross-compiling.
121 When -b is used, the value comes from the `specs' file. */
124 static int cross_compile = 1;
126 static int cross_compile = 0;
129 /* This is the obstack which we use to allocate many strings. */
131 static struct obstack obstack;
133 /* This is the obstack to build an environment variable to pass to
134 collect2 that describes all of the relevant switches of what to
135 pass the compiler in building the list of pointers to constructors
138 static struct obstack collect_obstack;
140 extern char *version_string;
142 static void set_spec ();
143 static struct compiler *lookup_compiler ();
144 static char *find_a_file ();
145 static void add_prefix ();
146 static char *skip_whitespace ();
147 static void record_temp_file ();
148 static char *handle_braces ();
149 static char *save_string ();
150 static char *concat ();
151 static int do_spec ();
152 static int do_spec_1 ();
153 static char *find_file ();
154 static int is_linker_dir ();
155 static void validate_switches ();
156 static void validate_all_switches ();
157 static void give_switch ();
158 static void pfatal_with_name ();
159 static void perror_with_name ();
160 static void perror_exec ();
161 static void fatal ();
162 static void error ();
167 /* Specs are strings containing lines, each of which (if not blank)
168 is made up of a program name, and arguments separated by spaces.
169 The program name must be exact and start from root, since no path
170 is searched and it is unreliable to depend on the current working directory.
171 Redirection of input or output is not supported; the subprograms must
172 accept filenames saying what files to read and write.
174 In addition, the specs can contain %-sequences to substitute variable text
175 or for conditional text. Here is a table of all defined %-sequences.
176 Note that spaces are not generated automatically around the results of
177 expanding these sequences; therefore, you can concatenate them together
178 or with constant text in a single argument.
180 %% substitute one % into the program name or argument.
181 %i substitute the name of the input file being processed.
182 %b substitute the basename of the input file being processed.
183 This is the substring up to (and not including) the last period
184 and not including the directory.
185 %g substitute the temporary-file-name-base. This is a string chosen
186 once per compilation. Different temporary file names are made by
187 concatenation of constant strings on the end, as in `%g.s'.
188 %g also has the same effect of %d.
189 %d marks the argument containing or following the %d as a
190 temporary file name, so that that file will be deleted if CC exits
191 successfully. Unlike %g, this contributes no text to the argument.
192 %w marks the argument containing or following the %w as the
193 "output file" of this compilation. This puts the argument
194 into the sequence of arguments that %o will substitute later.
196 like %{...} but mark last argument supplied within
197 as a file to be deleted on failure.
198 %o substitutes the names of all the output files, with spaces
199 automatically placed around them. You should write spaces
200 around the %o as well or the results are undefined.
201 %o is for use in the specs for running the linker.
202 Input files whose names have no recognized suffix are not compiled
203 at all, but they are included among the output files, so they will
205 %p substitutes the standard macro predefinitions for the
206 current target machine. Use this when running cpp.
207 %P like %p, but puts `__' before and after the name of each macro.
208 (Except macros that already have __.)
210 %I Substitute a -iprefix option made from GCC_EXEC_PREFIX.
211 %s current argument is the name of a library or startup file of some sort.
212 Search for that file in a standard list of directories
213 and substitute the full name found.
214 %eSTR Print STR as an error message. STR is terminated by a newline.
215 Use this when inconsistent options are detected.
216 %x{OPTION} Accumulate an option for %X.
217 %X Output the accumulated linker options specified by compilations.
218 %a process ASM_SPEC as a spec.
219 This allows config.h to specify part of the spec for running as.
220 %A process ASM_FINAL_SPEC as a spec. A capital A is actually
221 used here. This can be used to run a post-processor after the
222 assembler has done it's job.
223 %D Dump out a -L option for each directory in library_prefix,
224 followed by a -L option for each directory in startfile_prefix.
225 %l process LINK_SPEC as a spec.
226 %L process LIB_SPEC as a spec.
227 %S process STARTFILE_SPEC as a spec. A capital S is actually used here.
228 %E process ENDFILE_SPEC as a spec. A capital E is actually used here.
229 %c process SIGNED_CHAR_SPEC as a spec.
230 %C process CPP_SPEC as a spec. A capital C is actually used here.
231 %1 process CC1_SPEC as a spec.
232 %2 process CC1PLUS_SPEC as a spec.
233 %* substitute the variable part of a matched option. (See below.)
234 Note that each comma in the substituted string is replaced by
236 %{S} substitutes the -S switch, if that switch was given to CC.
237 If that switch was not specified, this substitutes nothing.
238 Here S is a metasyntactic variable.
239 %{S*} substitutes all the switches specified to CC whose names start
240 with -S. This is used for -o, -D, -I, etc; switches that take
241 arguments. CC considers `-o foo' as being one switch whose
242 name starts with `o'. %{o*} would substitute this text,
243 including the space; thus, two arguments would be generated.
244 %{S*:X} substitutes X if one or more switches whose names with -S are
245 specified to CC. Note that the tail part of the -S option
246 (i.e. the part matched by the `*') will be substituted for each
247 occurrence of %* within X.
248 %{S:X} substitutes X, but only if the -S switch was given to CC.
249 %{!S:X} substitutes X, but only if the -S switch was NOT given to CC.
250 %{|S:X} like %{S:X}, but if no S switch, substitute `-'.
251 %{|!S:X} like %{!S:X}, but if there is an S switch, substitute `-'.
252 %{.S:X} substitutes X, but only if processing a file with suffix S.
253 %{!.S:X} substitutes X, but only if NOT processing a file with suffix S.
254 %(Spec) processes a specification defined in a specs file as *Spec:
255 %[Spec] as above, but put __ around -D arguments
257 The conditional text X in a %{S:X} or %{!S:X} construct may contain
258 other nested % constructs or spaces, or even newlines. They are
259 processed as usual, as described above.
261 The character | is used to indicate that a command should be piped to
262 the following command, but only if -pipe is specified.
264 Note that it is built into CC which switches take arguments and which
265 do not. You might think it would be useful to generalize this to
266 allow each compiler's spec to say which switches take arguments. But
267 this cannot be done in a consistent fashion. CC cannot even decide
268 which input files have been specified without knowing which switches
269 take arguments, and it must know which input files to compile in order
270 to tell which compilers to run.
272 CC also knows implicitly that arguments starting in `-l' are to be
273 treated as compiler output files, and passed to the linker in their
274 proper position among the other output files. */
276 /* Define the macros used for specs %a, %l, %L, %S, %c, %C, %1. */
278 /* config.h can define ASM_SPEC to provide extra args to the assembler
279 or extra switch-translations. */
284 /* config.h can define ASM_FINAL_SPEC to run a post processor after
285 the assembler has run. */
286 #ifndef ASM_FINAL_SPEC
287 #define ASM_FINAL_SPEC ""
290 /* config.h can define CPP_SPEC to provide extra args to the C preprocessor
291 or extra switch-translations. */
296 /* config.h can define CC1_SPEC to provide extra args to cc1 and cc1plus
297 or extra switch-translations. */
302 /* config.h can define CC1PLUS_SPEC to provide extra args to cc1plus
303 or extra switch-translations. */
305 #define CC1PLUS_SPEC ""
308 /* config.h can define LINK_SPEC to provide extra args to the linker
309 or extra switch-translations. */
314 /* config.h can define LIB_SPEC to override the default libraries. */
316 #define LIB_SPEC "%{g*:-lg} %{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p}"
319 /* config.h can define STARTFILE_SPEC to override the default crt0 files. */
320 #ifndef STARTFILE_SPEC
321 #define STARTFILE_SPEC \
322 "%{pg:gcrt0.o%s}%{!pg:%{p:mcrt0.o%s}%{!p:crt0.o%s}}"
325 /* config.h can define SWITCHES_NEED_SPACES to control passing -o and -L.
326 Make the string nonempty to require spaces there. */
327 #ifndef SWITCHES_NEED_SPACES
328 #define SWITCHES_NEED_SPACES ""
331 /* config.h can define ENDFILE_SPEC to override the default crtn files. */
333 #define ENDFILE_SPEC ""
336 /* This spec is used for telling cpp whether char is signed or not. */
337 #ifndef SIGNED_CHAR_SPEC
338 #define SIGNED_CHAR_SPEC \
339 (DEFAULT_SIGNED_CHAR ? "%{funsigned-char:-D__CHAR_UNSIGNED__}" \
340 : "%{!fsigned-char:-D__CHAR_UNSIGNED__}")
343 static char *cpp_spec = CPP_SPEC;
344 static char *cpp_predefines = CPP_PREDEFINES;
345 static char *cc1_spec = CC1_SPEC;
346 static char *cc1plus_spec = CC1PLUS_SPEC;
347 static char *signed_char_spec = SIGNED_CHAR_SPEC;
348 static char *asm_spec = ASM_SPEC;
349 static char *asm_final_spec = ASM_FINAL_SPEC;
350 static char *link_spec = LINK_SPEC;
351 static char *lib_spec = LIB_SPEC;
352 static char *endfile_spec = ENDFILE_SPEC;
353 static char *startfile_spec = STARTFILE_SPEC;
354 static char *switches_need_spaces = SWITCHES_NEED_SPACES;
356 /* This defines which switch letters take arguments. */
358 #ifndef SWITCH_TAKES_ARG
359 #define SWITCH_TAKES_ARG(CHAR) \
360 ((CHAR) == 'D' || (CHAR) == 'U' || (CHAR) == 'o' \
361 || (CHAR) == 'e' || (CHAR) == 'T' || (CHAR) == 'u' \
362 || (CHAR) == 'I' || (CHAR) == 'm' \
363 || (CHAR) == 'L' || (CHAR) == 'A')
366 /* This defines which multi-letter switches take arguments. */
368 #ifndef WORD_SWITCH_TAKES_ARG
369 #define WORD_SWITCH_TAKES_ARG(STR) \
370 (!strcmp (STR, "Tdata") || !strcmp (STR, "include") \
371 || !strcmp (STR, "imacros") || !strcmp (STR, "aux-info"))
374 /* Record the mapping from file suffixes for compilation specs. */
378 char *suffix; /* Use this compiler for input files
379 whose names end in this suffix. */
380 char *spec; /* To use this compiler, pass this spec
384 /* Pointer to a vector of `struct compiler' that gives the spec for
385 compiling a file, based on its suffix.
386 A file that does not end in any of these suffixes will be passed
387 unchanged to the loader and nothing else will be done to it.
389 An entry containing two 0s is used to terminate the vector.
391 If multiple entries match a file, the last matching one is used. */
393 static struct compiler *compilers;
395 /* Number of entries in `compilers', not counting the null terminator. */
397 static int n_compilers;
399 /* The default list of file name suffixes and their compilation specs. */
401 static struct compiler default_compilers[] =
405 "cpp -lang-c %{nostdinc*} %{C} %{v} %{A*} %{D*} %{U*} %{I*} %{i*} %{P} %I\
406 %{C:%{!E:%eGNU C does not support -C without using -E}}\
407 %{M} %{MM} %{MD:-MD %b.d} %{MMD:-MMD %b.d}\
408 -undef -D__GNUC__=2 %{ansi:-trigraphs -$ -D__STRICT_ANSI__}\
409 %{!undef:%{!ansi:%p} %P} %{trigraphs}\
410 %c %{O*:-D__OPTIMIZE__} %{traditional} %{ftraditional:-traditional}\
411 %{traditional-cpp:-traditional}\
412 %{g*} %{W*} %{w} %{pedantic*} %{H} %{d*} %C\
413 %i %{!M:%{!MM:%{!E:%{!pipe:%g.i}}}}%{E:%W{o*}}%{M:%W{o*}}%{MM:%W{o*}} |\n\
414 %{!M:%{!MM:%{!E:cc1 %{!pipe:%g.i} %1 \
415 %{!Q:-quiet} -dumpbase %b.c %{d*} %{m*} %{a}\
416 %{g*} %{O*} %{W*} %{w} %{pedantic*} %{ansi} \
417 %{traditional} %{v:-version} %{pg:-p} %{p} %{f*}\
419 %{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\
420 %{S:%W{o*}%{!o*:-o %b.s}}%{!S:-o %{|!pipe:%g.s}} |\n\
421 %{!S:as %{R} %{j} %{J} %{h} %{d2} %a \
422 %{c:%W{o*}%{!o*:-o %w%b.o}}%{!c:-o %d%w%b.o}\
423 %{!pipe:%g.s} %A\n }}}}"},
425 "%{E:cpp -lang-c %{nostdinc*} %{C} %{v} %{A*} %{D*} %{U*} %{I*} %{i*} %{P} %I\
426 %{C:%{!E:%eGNU C does not support -C without using -E}}\
427 %{M} %{MM} %{MD:-MD %b.d} %{MMD:-MMD %b.d}\
428 -undef -D__GNUC__=2 %{ansi:-trigraphs -$ -D__STRICT_ANSI__}\
429 %{!undef:%{!ansi:%p} %P} %{trigraphs}\
430 %c %{O*:-D__OPTIMIZE__} %{traditional} %{ftraditional:-traditional}\
431 %{traditional-cpp:-traditional}\
432 %{g*} %{W*} %{w} %{pedantic*} %{H} %{d*} %C\
434 %{!E:%e-E required when input is from standard input}"},
435 {".m", "@objective-c"},
437 "cpp -lang-objc %{nostdinc*} %{C} %{v} %{A*} %{D*} %{U*} %{I*} %{i*} %{P} %I\
438 %{C:%{!E:%eGNU C does not support -C without using -E}}\
439 %{M} %{MM} %{MD:-MD %b.d} %{MMD:-MMD %b.d}\
440 -undef -D__OBJC__ -D__GNUC__=2 %{ansi:-trigraphs -$ -D__STRICT_ANSI__}\
441 %{!undef:%{!ansi:%p} %P} %{trigraphs}\
442 %c %{O*:-D__OPTIMIZE__} %{traditional} %{ftraditional:-traditional}\
443 %{traditional-cpp:-traditional}\
444 %{g*} %{W*} %{w} %{pedantic*} %{H} %{d*} %C\
445 %i %{!M:%{!MM:%{!E:%{!pipe:%g.i}}}}%{E:%W{o*}}%{M:%W{o*}}%{MM:%W{o*}} |\n\
446 %{!M:%{!MM:%{!E:cc1obj %{!pipe:%g.i} %1 \
447 %{!Q:-quiet} -dumpbase %b.m %{d*} %{m*} %{a}\
448 %{g*} %{O*} %{W*} %{w} %{pedantic*} %{ansi} \
449 %{traditional} %{v:-version} %{pg:-p} %{p} %{f*} \
450 -lang-objc %{gen-decls} \
452 %{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\
453 %{S:%W{o*}%{!o*:-o %b.s}}%{!S:-o %{|!pipe:%g.s}} |\n\
454 %{!S:as %{R} %{j} %{J} %{h} %{d2} %a \
455 %{c:%W{o*}%{!o*:-o %w%b.o}}%{!c:-o %d%w%b.o}\
456 %{!pipe:%g.s} %A\n }}}}"},
459 "%{!E:%eCompilation of header file requested} \
460 cpp %{nostdinc*} %{C} %{v} %{A*} %{D*} %{U*} %{I*} %{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*:-D__OPTIMIZE__} %{traditional} %{ftraditional:-traditional}\
466 %{traditional-cpp:-traditional}\
467 %{g*} %{W*} %{w} %{pedantic*} %{H} %{d*} %C\
473 "cpp -lang-c++ %{nostdinc*} %{C} %{v} %{A*} %{D*} %{U*} %{I*} %{i*} %{P} %I\
474 %{C:%{!E:%eGNU C++ does not support -C without using -E}}\
475 %{M} %{MM} %{MD:-MD %b.d} %{MMD:-MMD %b.d} \
476 -undef -D__GNUC__=2 -D__GNUG__=2 -D__cplusplus \
477 %{ansi:-trigraphs -$ -D__STRICT_ANSI__} %{!undef:%{!ansi:%p} %P}\
478 %c %{O*:-D__OPTIMIZE__} %{traditional} %{ftraditional:-traditional}\
479 %{traditional-cpp:-traditional} %{trigraphs}\
480 %{g*} %{W*} %{w} %{pedantic*} %{H} %{d*} %C\
481 %i %{!M:%{!MM:%{!E:%{!pipe:%g.i}}}}%{E:%W{o*}}%{M:%W{o*}}%{MM:%W{o*}} |\n\
482 %{!M:%{!MM:%{!E:cc1plus %{!pipe:%g.i} %1 %2\
483 %{!Q:-quiet} -dumpbase %b.cc %{d*} %{m*} %{a}\
484 %{g*} %{O*} %{W*} %{w} %{pedantic*} %{ansi} %{traditional}\
485 %{v:-version} %{pg:-p} %{p} %{f*}\
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 \
490 %{c:%W{o*}%{!o*:-o %w%b.o}}%{!c:-o %d%w%b.o}\
491 %{!pipe:%g.s} %A\n }}}}"},
492 {".i", "@cpp-output"},
494 "cc1 %i %1 %{!Q:-quiet} %{d*} %{m*} %{a}\
495 %{g*} %{O*} %{W*} %{w} %{pedantic*} %{ansi} %{traditional}\
496 %{v:-version} %{pg:-p} %{p} %{f*}\
498 %{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\
499 %{S:%W{o*}%{!o*:-o %b.s}}%{!S:-o %{|!pipe:%g.s}} |\n\
500 %{!S:as %{R} %{j} %{J} %{h} %{d2} %a \
501 %{c:%W{o*}%{!o*:-o %w%b.o}}%{!c:-o %d%w%b.o} %{!pipe:%g.s} %A\n }"},
502 {".ii", "@c++-cpp-output"},
504 "cc1plus %i %1 %2 %{!Q:-quiet} %{d*} %{m*} %{a}\
505 %{g*} %{O*} %{W*} %{w} %{pedantic*} %{ansi} %{traditional}\
506 %{v:-version} %{pg:-p} %{p} %{f*}\
508 %{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\
509 %{S:%W{o*}%{!o*:-o %b.s}}%{!S:-o %{|!pipe:%g.s}} |\n\
510 %{!S:as %{R} %{j} %{J} %{h} %{d2} %a \
511 %{c:%W{o*}%{!o*:-o %w%b.o}}%{!c:-o %d%w%b.o}\
512 %{!pipe:%g.s} %A\n }"},
513 {".s", "@assembler"},
515 "%{!S:as %{R} %{j} %{J} %{h} %{d2} %a \
516 %{c:%W{o*}%{!o*:-o %w%b.o}}%{!c:-o %d%w%b.o} %i %A\n }"},
517 {".S", "@assembler-with-cpp"},
518 {"@assembler-with-cpp",
519 "cpp -lang-asm %{nostdinc*} %{C} %{v} %{A*} %{D*} %{U*} %{I*} %{i*} %{P} %I\
520 %{C:%{!E:%eGNU C does not support -C without using -E}}\
521 %{M} %{MM} %{MD:-MD %b.d} %{MMD:-MMD %b.d} %{trigraphs} \
522 -undef -$ %{!undef:%p %P} -D__ASSEMBLER__ \
523 %c %{O*:-D__OPTIMIZE__} %{traditional} %{ftraditional:-traditional}\
524 %{traditional-cpp:-traditional}\
525 %{g*} %{W*} %{w} %{pedantic*} %{H} %{d*} %C\
526 %i %{!M:%{!MM:%{!E:%{!pipe:%g.s}}}}%{E:%W{o*}}%{M:%W{o*}}%{MM:%W{o*}} |\n\
527 %{!M:%{!MM:%{!E:%{!S:as %{R} %{j} %{J} %{h} %{d2} %a \
528 %{c:%W{o*}%{!o*:-o %w%b.o}}%{!c:-o %d%w%b.o}\
529 %{!pipe:%g.s} %A\n }}}}"},
530 /* Mark end of table */
534 /* Number of elements in default_compilers, not counting the terminator. */
536 static int n_default_compilers
537 = (sizeof default_compilers / sizeof (struct compiler)) - 1;
539 /* Here is the spec for running the linker, after compiling all files. */
541 #ifdef LINK_LIBGCC_SPECIAL
542 /* Have gcc do the search. */
543 /* -u* was put back because both BSD and SysV seem to support it. */
544 static char *link_command_spec = "\
545 %{!c:%{!M:%{!MM:%{!E:%{!S:ld %l %X %{o*} %{A} %{d} %{e*} %{m} %{N} %{n} \
546 %{r} %{s} %{T*} %{t} %{u*} %{x} %{z}\
547 %{!A:%{!nostdlib:%S}} \
548 %{L*} %D %o %{!nostdlib:libgcc.a%s %L libgcc.a%s %{!A:%E}}\n }}}}}";
550 /* Use -l and have the linker do the search. */
551 static char *link_command_spec = "\
552 %{!c:%{!M:%{!MM:%{!E:%{!S:ld %l %X %{o*} %{A} %{d} %{e*} %{m} %{N} %{n} \
553 %{r} %{s} %{T*} %{t} %{u*} %{x} %{z}\
554 %{!A:%{!nostdlib:%S}} \
555 %{L*} %D %o %{!nostdlib:-lgcc %L -lgcc %{!A:%E}}\n }}}}}";
558 /* A vector of options to give to the linker.
559 These options are accumulated by %x
560 and substituted into the linker command with %X. */
561 static int n_linker_options;
562 static char **linker_options;
564 /* Read compilation specs from a file named FILENAME,
565 replacing the default ones.
567 A suffix which starts with `*' is a definition for
568 one of the machine-specific sub-specs. The "suffix" should be
569 *asm, *cc1, *cpp, *link, *startfile, *signed_char, etc.
570 The corresponding spec is stored in asm_spec, etc.,
571 rather than in the `compilers' vector.
573 Anything invalid in the file is a fatal error. */
576 read_specs (filename)
585 fprintf (stderr, "Reading specs from %s\n", filename);
587 /* Open and stat the file. */
588 desc = open (filename, 0, 0);
590 pfatal_with_name (filename);
591 if (stat (filename, &statbuf) < 0)
592 pfatal_with_name (filename);
594 /* Read contents of file into BUFFER. */
595 buffer = xmalloc (statbuf.st_size + 1);
596 read (desc, buffer, statbuf.st_size);
597 buffer[statbuf.st_size] = 0;
600 /* Scan BUFFER for specs, putting them in the vector. */
606 char *in, *out, *p1, *p2;
608 /* Advance P in BUFFER to the next nonblank nocomment line. */
609 p = skip_whitespace (p);
613 /* Find the colon that should end the suffix. */
615 while (*p1 && *p1 != ':' && *p1 != '\n') p1++;
616 /* The colon shouldn't be missing. */
618 fatal ("specs file malformed after %d characters", p1 - buffer);
619 /* Skip back over trailing whitespace. */
621 while (p2 > buffer && (p2[-1] == ' ' || p2[-1] == '\t')) p2--;
622 /* Copy the suffix to a string. */
623 suffix = save_string (p, p2 - p);
624 /* Find the next line. */
625 p = skip_whitespace (p1 + 1);
627 fatal ("specs file malformed after %d characters", p - buffer);
629 /* Find next blank line. */
630 while (*p1 && !(*p1 == '\n' && p1[1] == '\n')) p1++;
631 /* Specs end at the blank line and do not include the newline. */
632 spec = save_string (p, p1 - p);
635 /* Delete backslash-newline sequences from the spec. */
640 if (in[0] == '\\' && in[1] == '\n')
642 else if (in[0] == '#')
644 while (*in && *in != '\n') in++;
651 if (suffix[0] == '*')
653 if (! strcmp (suffix, "*link_command"))
654 link_command_spec = spec;
656 set_spec (suffix + 1, spec);
660 /* Add this pair to the vector. */
662 = ((struct compiler *)
663 xrealloc (compilers, (n_compilers + 2) * sizeof (struct compiler)));
664 compilers[n_compilers].suffix = suffix;
665 compilers[n_compilers].spec = spec;
670 link_command_spec = spec;
673 if (link_command_spec == 0)
674 fatal ("spec file has no spec for linking");
683 /* A fully-blank line is a delimiter in the SPEC file and shouldn't
684 be considered whitespace. */
685 if (p[0] == '\n' && p[1] == '\n' && p[2] == '\n')
687 else if (*p == '\n' || *p == ' ' || *p == '\t')
691 while (*p != '\n') p++;
701 /* Structure to keep track of the specs that have been defined so far. These
702 are accessed using %(specname) or %[specname] in a compiler or link spec. */
706 char *name; /* Name of the spec. */
707 char *spec; /* The spec itself. */
708 struct spec_list *next; /* Next spec in linked list. */
711 /* List of specs that have been defined so far. */
713 static struct spec_list *specs = (struct spec_list *) 0;
715 /* Change the value of spec NAME to SPEC. If SPEC is empty, then the spec is
716 removed; If the spec starts with a + then SPEC is added to the end of the
720 set_spec (name, spec)
724 struct spec_list *sl;
727 /* See if the spec already exists */
728 for (sl = specs; sl; sl = sl->next)
729 if (strcmp (sl->name, name) == 0)
734 /* Not found - make it */
735 sl = (struct spec_list *) xmalloc (sizeof (struct spec_list));
736 sl->name = save_string (name, strlen (name));
737 sl->spec = save_string ("", 0);
743 if (name && spec[0] == '+' && isspace (spec[1]))
744 sl->spec = concat (name, spec + 1, "");
746 sl->spec = save_string (spec, strlen (spec));
748 if (! strcmp (name, "asm"))
750 else if (! strcmp (name, "asm_final"))
751 asm_final_spec = sl->spec;
752 else if (! strcmp (name, "cc1"))
754 else if (! strcmp (name, "cc1plus"))
755 cc1plus_spec = sl->spec;
756 else if (! strcmp (name, "cpp"))
758 else if (! strcmp (name, "endfile"))
759 endfile_spec = sl->spec;
760 else if (! strcmp (name, "lib"))
762 else if (! strcmp (name, "link"))
763 link_spec = sl->spec;
764 else if (! strcmp (name, "predefines"))
765 cpp_predefines = sl->spec;
766 else if (! strcmp (name, "signed_char"))
767 signed_char_spec = sl->spec;
768 else if (! strcmp (name, "startfile"))
769 startfile_spec = sl->spec;
770 else if (! strcmp (name, "switches_need_spaces"))
771 switches_need_spaces = sl->spec;
772 else if (! strcmp (name, "cross_compile"))
773 cross_compile = atoi (sl->spec);
774 /* Free the old spec */
779 /* Accumulate a command (program name and args), and run it. */
781 /* Vector of pointers to arguments in the current line of specifications. */
783 static char **argbuf;
785 /* Number of elements allocated in argbuf. */
787 static int argbuf_length;
789 /* Number of elements in argbuf currently in use (containing args). */
791 static int argbuf_index;
793 /* Number of commands executed so far. */
795 static int execution_count;
797 /* Name with which this program was invoked. */
799 static char *programname;
801 /* Structures to keep track of prefixes to try when looking for files. */
805 char *prefix; /* String to prepend to the path. */
806 struct prefix_list *next; /* Next in linked list. */
807 int require_machine_suffix; /* Don't use without machine_suffix. */
808 int *used_flag_ptr; /* 1 if a file was found with this prefix. */
813 struct prefix_list *plist; /* List of prefixes to try */
814 int max_len; /* Max length of a prefix in PLIST */
815 char *name; /* Name of this list (used in config stuff) */
818 /* List of prefixes to try when looking for executables. */
820 static struct path_prefix exec_prefix = { 0, 0, "exec" };
822 /* List of prefixes to try when looking for startup (crt0) files. */
824 static struct path_prefix startfile_prefix = { 0, 0, "startfile" };
826 /* List of prefixes to try when looking for libraries. */
828 static struct path_prefix library_prefix = { 0, 0, "libraryfile" };
830 /* Suffix to attach to directories searched for commands. */
832 static char *machine_suffix = 0;
834 /* Adjusted value of GCC_EXEC_PREFIX envvar. */
836 static char *gcc_exec_prefix;
838 /* Default prefixes to attach to command names. */
840 #ifdef CROSS_COMPILE /* Don't use these prefixes for a cross compiler. */
841 #undef MD_EXEC_PREFIX
842 #undef MD_STARTFILE_PREFIX
843 #undef MD_STARTFILE_PREFIX_1
846 #ifndef STANDARD_EXEC_PREFIX
847 #define STANDARD_EXEC_PREFIX "/usr/local/lib/gcc-lib/"
848 #endif /* !defined STANDARD_EXEC_PREFIX */
850 static char *standard_exec_prefix = STANDARD_EXEC_PREFIX;
851 static char *standard_exec_prefix_1 = "/usr/lib/gcc/";
852 #ifdef MD_EXEC_PREFIX
853 static char *md_exec_prefix = MD_EXEC_PREFIX;
856 #ifndef STANDARD_STARTFILE_PREFIX
857 #define STANDARD_STARTFILE_PREFIX "/usr/local/lib/"
858 #endif /* !defined STANDARD_STARTFILE_PREFIX */
860 #ifdef MD_STARTFILE_PREFIX
861 static char *md_startfile_prefix = MD_STARTFILE_PREFIX;
863 #ifdef MD_STARTFILE_PREFIX_1
864 static char *md_startfile_prefix_1 = MD_STARTFILE_PREFIX_1;
866 static char *standard_startfile_prefix = STANDARD_STARTFILE_PREFIX;
867 static char *standard_startfile_prefix_1 = "/lib/";
868 static char *standard_startfile_prefix_2 = "/usr/lib/";
870 /* Clear out the vector of arguments (after a command is executed). */
878 /* Add one argument to the vector at the end.
879 This is done when a space is seen or at the end of the line.
880 If DELETE_ALWAYS is nonzero, the arg is a filename
881 and the file should be deleted eventually.
882 If DELETE_FAILURE is nonzero, the arg is a filename
883 and the file should be deleted if this compilation fails. */
886 store_arg (arg, delete_always, delete_failure)
888 int delete_always, delete_failure;
890 if (argbuf_index + 1 == argbuf_length)
892 argbuf = (char **) xrealloc (argbuf, (argbuf_length *= 2) * sizeof (char *));
895 argbuf[argbuf_index++] = arg;
896 argbuf[argbuf_index] = 0;
898 if (delete_always || delete_failure)
899 record_temp_file (arg, delete_always, delete_failure);
902 /* Record the names of temporary files we tell compilers to write,
903 and delete them at the end of the run. */
905 /* This is the common prefix we use to make temp file names.
906 It is chosen once for each run of this program.
907 It is substituted into a spec by %g.
908 Thus, all temp file names contain this prefix.
909 In practice, all temp file names start with this prefix.
911 This prefix comes from the envvar TMPDIR if it is defined;
912 otherwise, from the P_tmpdir macro if that is defined;
913 otherwise, in /usr/tmp or /tmp. */
915 static char *temp_filename;
917 /* Length of the prefix. */
919 static int temp_filename_length;
921 /* Define the list of temporary files to delete. */
926 struct temp_file *next;
929 /* Queue of files to delete on success or failure of compilation. */
930 static struct temp_file *always_delete_queue;
931 /* Queue of files to delete on failure of compilation. */
932 static struct temp_file *failure_delete_queue;
934 /* Record FILENAME as a file to be deleted automatically.
935 ALWAYS_DELETE nonzero means delete it if all compilation succeeds;
936 otherwise delete it in any case.
937 FAIL_DELETE nonzero means delete it if a compilation step fails;
938 otherwise delete it in any case. */
941 record_temp_file (filename, always_delete, fail_delete)
947 name = xmalloc (strlen (filename) + 1);
948 strcpy (name, filename);
952 register struct temp_file *temp;
953 for (temp = always_delete_queue; temp; temp = temp->next)
954 if (! strcmp (name, temp->name))
956 temp = (struct temp_file *) xmalloc (sizeof (struct temp_file));
957 temp->next = always_delete_queue;
959 always_delete_queue = temp;
965 register struct temp_file *temp;
966 for (temp = failure_delete_queue; temp; temp = temp->next)
967 if (! strcmp (name, temp->name))
969 temp = (struct temp_file *) xmalloc (sizeof (struct temp_file));
970 temp->next = failure_delete_queue;
972 failure_delete_queue = temp;
977 /* Delete all the temporary files whose names we previously recorded. */
982 register struct temp_file *temp;
984 for (temp = always_delete_queue; temp; temp = temp->next)
988 printf ("Delete %s? (y or n) ", temp->name);
992 while (getchar () != '\n') ;
993 if (i == 'y' || i == 'Y')
997 if (stat (temp->name, &st) >= 0)
999 /* Delete only ordinary files. */
1000 if (S_ISREG (st.st_mode))
1001 if (unlink (temp->name) < 0)
1003 perror_with_name (temp->name);
1008 always_delete_queue = 0;
1011 /* Delete all the files to be deleted on error. */
1014 delete_failure_queue ()
1016 register struct temp_file *temp;
1018 for (temp = failure_delete_queue; temp; temp = temp->next)
1022 printf ("Delete %s? (y or n) ", temp->name);
1026 while (getchar () != '\n') ;
1027 if (i == 'y' || i == 'Y')
1030 if (unlink (temp->name) < 0)
1032 perror_with_name (temp->name);
1038 clear_failure_queue ()
1040 failure_delete_queue = 0;
1043 /* Compute a string to use as the base of all temporary file names.
1044 It is substituted for %g. */
1049 char *base = getenv ("TMPDIR");
1052 if (base == (char *)0)
1055 if (access (P_tmpdir, R_OK | W_OK) == 0)
1058 if (base == (char *)0)
1060 if (access ("/usr/tmp", R_OK | W_OK) == 0)
1067 len = strlen (base);
1068 temp_filename = xmalloc (len + sizeof("/ccXXXXXX"));
1069 strcpy (temp_filename, base);
1070 if (len > 0 && temp_filename[len-1] != '/')
1071 temp_filename[len++] = '/';
1072 strcpy (temp_filename + len, "ccXXXXXX");
1074 mktemp (temp_filename);
1075 temp_filename_length = strlen (temp_filename);
1079 /* Routine to add variables to the environment. We do this to pass
1080 the pathname of the gcc driver, and the directories search to the
1081 collect2 program, which is being run as ld. This way, we can be
1082 sure of executing the right compiler when collect2 wants to build
1083 constructors and destructors. Since the environment variables we
1084 use come from an obstack, we don't have to worry about allocating
1092 #ifndef VMS /* nor about VMS */
1094 extern char **environ;
1095 char **old_environ = environ;
1099 int str_len = strlen (str);
1103 while ((ch = *p++) != '\0' && ch != '=')
1109 /* Search for replacing an existing environment variable, and
1110 count the number of total environment variables. */
1111 for (envp = old_environ; *envp; envp++)
1114 if (!strncmp (str, *envp, name_len))
1121 /* Add a new environment variable */
1122 environ = (char **) xmalloc (sizeof (char *) * (num_envs+2));
1124 bcopy (old_environ, environ+1, sizeof (char *) * (num_envs+1));
1129 #endif /* HAVE_PUTENV */
1132 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables for collect. */
1135 putenv_from_prefixes (paths, env_var)
1136 struct path_prefix *paths;
1139 int suffix_len = (machine_suffix) ? strlen (machine_suffix) : 0;
1140 int first_time = TRUE;
1141 struct prefix_list *pprefix;
1143 obstack_grow (&collect_obstack, env_var, strlen (env_var));
1145 for (pprefix = paths->plist; pprefix != 0; pprefix = pprefix->next)
1147 int len = strlen (pprefix->prefix);
1152 obstack_grow (&collect_obstack, ":", 1);
1155 obstack_grow (&collect_obstack, pprefix->prefix, len);
1156 obstack_grow (&collect_obstack, machine_suffix, suffix_len);
1159 if (!pprefix->require_machine_suffix)
1162 obstack_grow (&collect_obstack, ":", 1);
1165 obstack_grow (&collect_obstack, pprefix->prefix, len);
1168 obstack_grow (&collect_obstack, "\0", 1);
1169 putenv (obstack_finish (&collect_obstack));
1173 /* Search for NAME using the prefix list PREFIXES. MODE is passed to
1174 access to check permissions.
1175 Return 0 if not found, otherwise return its name, allocated with malloc. */
1178 find_a_file (pprefix, name, mode)
1179 struct path_prefix *pprefix;
1184 char *file_suffix = ((mode & X_OK) != 0 ? EXECUTABLE_SUFFIX : "");
1185 struct prefix_list *pl;
1186 int len = pprefix->max_len + strlen (name) + strlen (file_suffix) + 1;
1189 len += strlen (machine_suffix);
1191 temp = xmalloc (len);
1193 /* Determine the filename to execute (special case for absolute paths). */
1197 if (access (name, mode))
1199 strcpy (temp, name);
1204 for (pl = pprefix->plist; pl; pl = pl->next)
1208 strcpy (temp, pl->prefix);
1209 strcat (temp, machine_suffix);
1210 strcat (temp, name);
1211 if (access (temp, mode) == 0)
1213 if (pl->used_flag_ptr != 0)
1214 *pl->used_flag_ptr = 1;
1217 /* Some systems have a suffix for executable files.
1218 So try appending that. */
1219 if (file_suffix[0] != 0)
1221 strcat (temp, file_suffix);
1222 if (access (temp, mode) == 0)
1224 if (pl->used_flag_ptr != 0)
1225 *pl->used_flag_ptr = 1;
1230 /* Certain prefixes can't be used without the machine suffix
1231 when the machine or version is explicitly specified. */
1232 if (!pl->require_machine_suffix)
1234 strcpy (temp, pl->prefix);
1235 strcat (temp, name);
1236 if (access (temp, mode) == 0)
1238 if (pl->used_flag_ptr != 0)
1239 *pl->used_flag_ptr = 1;
1242 /* Some systems have a suffix for executable files.
1243 So try appending that. */
1244 if (file_suffix[0] != 0)
1246 strcat (temp, file_suffix);
1247 if (access (temp, mode) == 0)
1249 if (pl->used_flag_ptr != 0)
1250 *pl->used_flag_ptr = 1;
1261 /* Add an entry for PREFIX in PLIST. If FIRST is set, it goes
1262 at the start of the list, otherwise it goes at the end.
1264 If WARN is nonzero, we will warn if no file is found
1265 through this prefix. WARN should point to an int
1266 which will be set to 1 if this entry is used. */
1269 add_prefix (pprefix, prefix, first, require_machine_suffix, warn)
1270 struct path_prefix *pprefix;
1273 int require_machine_suffix;
1276 struct prefix_list *pl, **prev;
1279 if (!first && pprefix->plist)
1281 for (pl = pprefix->plist; pl->next; pl = pl->next)
1286 prev = &pprefix->plist;
1288 /* Keep track of the longest prefix */
1290 len = strlen (prefix);
1291 if (len > pprefix->max_len)
1292 pprefix->max_len = len;
1294 pl = (struct prefix_list *) xmalloc (sizeof (struct prefix_list));
1295 pl->prefix = save_string (prefix, len);
1296 pl->require_machine_suffix = require_machine_suffix;
1297 pl->used_flag_ptr = warn;
1304 pl->next = (struct prefix_list *) 0;
1308 /* Print warnings for any prefixes in the list PPREFIX that were not used. */
1311 unused_prefix_warnings (pprefix)
1312 struct path_prefix *pprefix;
1314 struct prefix_list *pl = pprefix->plist;
1318 if (pl->used_flag_ptr != 0 && !*pl->used_flag_ptr)
1320 error ("file path prefix `%s' never used",
1322 /* Prevent duplicate warnings. */
1323 *pl->used_flag_ptr = 1;
1329 /* Get rid of all prefixes built up so far in *PLISTP. */
1332 free_path_prefix (pprefix)
1333 struct path_prefix *pprefix;
1335 struct prefix_list *pl = pprefix->plist;
1336 struct prefix_list *temp;
1342 free (temp->prefix);
1343 free ((char *) temp);
1345 pprefix->plist = (struct prefix_list *) 0;
1348 /* stdin file number. */
1349 #define STDIN_FILE_NO 0
1351 /* stdout file number. */
1352 #define STDOUT_FILE_NO 1
1354 /* value of `pipe': port index for reading. */
1357 /* value of `pipe': port index for writing. */
1358 #define WRITE_PORT 1
1360 /* Pipe waiting from last process, to be used as input for the next one.
1361 Value is STDIN_FILE_NO if no pipe is waiting
1362 (i.e. the next command is the first of a group). */
1364 static int last_pipe_input;
1366 /* Fork one piped subcommand. FUNC is the system call to use
1367 (either execv or execvp). ARGV is the arg vector to use.
1368 NOT_LAST is nonzero if this is not the last subcommand
1369 (i.e. its output should be piped to the next one.) */
1374 /* Declare these to avoid compilation error. They won't be called. */
1375 int execv(const char *a, const char **b){}
1376 int execvp(const char *a, const char **b){}
1379 pexecute (search_flag, program, argv, not_last)
1389 scmd = (char *)malloc (strlen (program) + strlen (temp_filename) + 6);
1390 sprintf (scmd, "%s @%s.gp", program, temp_filename);
1391 argfile = fopen (scmd+strlen (program) + 2, "w");
1393 pfatal_with_name (scmd + strlen (program) + 2);
1395 for (i=1; argv[i]; i++)
1398 for (cp = argv[i]; *cp; cp++)
1400 if (*cp == '"' || *cp == '\'' || *cp == '\\' || isspace (*cp))
1401 fputc ('\\', argfile);
1402 fputc (*cp, argfile);
1404 fputc ('\n', argfile);
1410 remove (scmd + strlen (program) + 2);
1414 #else /* not __MSDOS__ */
1417 pexecute (search_flag, program, argv, not_last)
1423 int (*func)() = (search_flag ? execv : execvp);
1426 int input_desc = last_pipe_input;
1427 int output_desc = STDOUT_FILE_NO;
1428 int retries, sleep_interval;
1430 /* If this isn't the last process, make a pipe for its output,
1431 and record it as waiting to be the input to the next process. */
1435 if (pipe (pdes) < 0)
1436 pfatal_with_name ("pipe");
1437 output_desc = pdes[WRITE_PORT];
1438 last_pipe_input = pdes[READ_PORT];
1441 last_pipe_input = STDIN_FILE_NO;
1443 /* Fork a subprocess; wait and retry if it fails. */
1445 for (retries = 0; retries < 4; retries++)
1450 sleep (sleep_interval);
1451 sleep_interval *= 2;
1458 pfatal_with_name ("fork");
1460 pfatal_with_name ("vfork");
1466 /* Move the input and output pipes into place, if nec. */
1467 if (input_desc != STDIN_FILE_NO)
1469 close (STDIN_FILE_NO);
1473 if (output_desc != STDOUT_FILE_NO)
1475 close (STDOUT_FILE_NO);
1477 close (output_desc);
1480 /* Close the parent's descs that aren't wanted here. */
1481 if (last_pipe_input != STDIN_FILE_NO)
1482 close (last_pipe_input);
1484 /* Exec the program. */
1485 (*func) (program, argv);
1486 perror_exec (program);
1492 /* In the parent, after forking.
1493 Close the descriptors that we made for this child. */
1494 if (input_desc != STDIN_FILE_NO)
1496 if (output_desc != STDOUT_FILE_NO)
1497 close (output_desc);
1499 /* Return child's process number. */
1504 #endif /* not __MSDOS__ */
1508 pexecute (search_flag, program, argv, not_last)
1514 return (search_flag ? spawnv : spawnvp) (1, program, argv);
1516 #endif /* not OS2 */
1518 /* Execute the command specified by the arguments on the current line of spec.
1519 When using pipes, this includes several piped-together commands
1520 with `|' between them.
1522 Return 0 if successful, -1 if failed. */
1528 int n_commands; /* # of command. */
1532 char *prog; /* program name. */
1533 char **argv; /* vector of args. */
1534 int pid; /* pid of process for this command. */
1537 struct command *commands; /* each command buffer with above info. */
1539 /* Count # of piped commands. */
1540 for (n_commands = 1, i = 0; i < argbuf_index; i++)
1541 if (strcmp (argbuf[i], "|") == 0)
1544 /* Get storage for each command. */
1546 = (struct command *) alloca (n_commands * sizeof (struct command));
1548 /* Split argbuf into its separate piped processes,
1549 and record info about each one.
1550 Also search for the programs that are to be run. */
1552 commands[0].prog = argbuf[0]; /* first command. */
1553 commands[0].argv = &argbuf[0];
1554 string = find_a_file (&exec_prefix, commands[0].prog, X_OK);
1556 commands[0].argv[0] = string;
1558 for (n_commands = 1, i = 0; i < argbuf_index; i++)
1559 if (strcmp (argbuf[i], "|") == 0)
1560 { /* each command. */
1562 fatal ("-pipe not supported under MS-DOS");
1564 argbuf[i] = 0; /* termination of command args. */
1565 commands[n_commands].prog = argbuf[i + 1];
1566 commands[n_commands].argv = &argbuf[i + 1];
1567 string = find_a_file (&exec_prefix, commands[n_commands].prog, X_OK);
1569 commands[n_commands].argv[0] = string;
1573 argbuf[argbuf_index] = 0;
1575 /* If -v, print what we are about to do, and maybe query. */
1579 /* Print each piped command as a separate line. */
1580 for (i = 0; i < n_commands ; i++)
1584 for (j = commands[i].argv; *j; j++)
1585 fprintf (stderr, " %s", *j);
1587 /* Print a pipe symbol after all but the last command. */
1588 if (i + 1 != n_commands)
1589 fprintf (stderr, " |");
1590 fprintf (stderr, "\n");
1594 fprintf (stderr, "\nGo ahead? (y or n) ");
1598 while (getchar () != '\n') ;
1599 if (i != 'y' && i != 'Y')
1604 /* Run each piped subprocess. */
1606 last_pipe_input = STDIN_FILE_NO;
1607 for (i = 0; i < n_commands; i++)
1609 char *string = commands[i].argv[0];
1611 commands[i].pid = pexecute (string != commands[i].prog,
1612 string, commands[i].argv,
1613 i + 1 < n_commands);
1615 if (string != commands[i].prog)
1621 /* Wait for all the subprocesses to finish.
1622 We don't care what order they finish in;
1623 we know that N_COMMANDS waits will get them all. */
1628 for (i = 0; i < n_commands; i++)
1635 status = pid = commands[i].pid;
1637 pid = wait (&status);
1645 for (j = 0; j < n_commands; j++)
1646 if (commands[j].pid == pid)
1647 prog = commands[j].prog;
1649 if ((status & 0x7F) != 0)
1650 fatal ("Internal compiler error: program %s got fatal signal %d",
1651 prog, (status & 0x7F));
1652 if (((status & 0xFF00) >> 8) >= MIN_FATAL_STATUS)
1660 /* Find all the switches given to us
1661 and make a vector describing them.
1662 The elements of the vector are strings, one per switch given.
1663 If a switch uses following arguments, then the `part1' field
1664 is the switch itself and the `args' field
1665 is a null-terminated vector containing the following arguments.
1666 The `valid' field is nonzero if any spec has looked at this switch;
1667 if it remains zero at the end of the run, it must be meaningless. */
1676 static struct switchstr *switches;
1678 static int n_switches;
1686 /* Also a vector of input files specified. */
1688 static struct infile *infiles;
1690 static int n_infiles;
1692 /* And a vector of corresponding output files is made up later. */
1694 static char **outfiles;
1696 /* Create the vector `switches' and its contents.
1697 Store its length in `n_switches'. */
1700 process_command (argc, argv)
1706 char *spec_lang = 0;
1707 int last_language_n_infiles;
1709 gcc_exec_prefix = getenv ("GCC_EXEC_PREFIX");
1713 spec_version = version_string;
1715 /* Set up the default search paths. */
1717 if (gcc_exec_prefix)
1719 add_prefix (&exec_prefix, gcc_exec_prefix, 0, 0, 0);
1720 add_prefix (&startfile_prefix, gcc_exec_prefix, 0, 0, 0);
1723 /* COMPILER_PATH and LIBRARY_PATH have values
1724 that are lists of directory names with colons. */
1726 temp = getenv ("COMPILER_PATH");
1729 char *startp, *endp;
1730 char *nstore = (char *) alloca (strlen (temp) + 3);
1732 startp = endp = temp;
1735 if (*endp == PATH_SEPARATOR || *endp == 0)
1737 strncpy (nstore, startp, endp-startp);
1740 strcpy (nstore, "./");
1742 else if (endp[-1] != '/')
1744 nstore[endp-startp] = '/';
1745 nstore[endp-startp+1] = 0;
1748 nstore[endp-startp] = 0;
1749 add_prefix (&exec_prefix, nstore, 0, 0, 0);
1752 endp = startp = endp + 1;
1759 temp = getenv ("LIBRARY_PATH");
1762 char *startp, *endp;
1763 char *nstore = (char *) alloca (strlen (temp) + 3);
1765 startp = endp = temp;
1768 if (*endp == PATH_SEPARATOR || *endp == 0)
1770 strncpy (nstore, startp, endp-startp);
1773 strcpy (nstore, "./");
1775 else if (endp[-1] != '/')
1777 nstore[endp-startp] = '/';
1778 nstore[endp-startp+1] = 0;
1781 nstore[endp-startp] = 0;
1782 add_prefix (&startfile_prefix, nstore, 0, 0, 0);
1783 /* Make separate list of dirs that came from LIBRARY_PATH. */
1784 add_prefix (&library_prefix, nstore, 0, 0, 0);
1787 endp = startp = endp + 1;
1794 /* Use LPATH like LIBRARY_PATH (for the CMU build program). */
1795 temp = getenv ("LPATH");
1798 char *startp, *endp;
1799 char *nstore = (char *) alloca (strlen (temp) + 3);
1801 startp = endp = temp;
1804 if (*endp == PATH_SEPARATOR || *endp == 0)
1806 strncpy (nstore, startp, endp-startp);
1809 strcpy (nstore, "./");
1811 else if (endp[-1] != '/')
1813 nstore[endp-startp] = '/';
1814 nstore[endp-startp+1] = 0;
1817 nstore[endp-startp] = 0;
1818 add_prefix (&startfile_prefix, nstore, 0, 0, 0);
1819 /* Make separate list of dirs that came from LIBRARY_PATH. */
1820 add_prefix (&library_prefix, nstore, 0, 0, 0);
1823 endp = startp = endp + 1;
1830 /* Scan argv twice. Here, the first time, just count how many switches
1831 there will be in their vector, and how many input files in theirs.
1832 Here we also parse the switches that cc itself uses (e.g. -v). */
1834 for (i = 1; i < argc; i++)
1836 if (! strcmp (argv[i], "-dumpspecs"))
1838 printf ("*asm:\n%s\n\n", asm_spec);
1839 printf ("*asm_final:\n%s\n\n", asm_final_spec);
1840 printf ("*cpp:\n%s\n\n", cpp_spec);
1841 printf ("*cc1:\n%s\n\n", cc1_spec);
1842 printf ("*cc1plus:\n%s\n\n", cc1plus_spec);
1843 printf ("*endfile:\n%s\n\n", endfile_spec);
1844 printf ("*link:\n%s\n\n", link_spec);
1845 printf ("*lib:\n%s\n\n", lib_spec);
1846 printf ("*startfile:\n%s\n\n", startfile_spec);
1847 printf ("*switches_need_spaces:\n%s\n\n", switches_need_spaces);
1848 printf ("*signed_char:\n%s\n\n", signed_char_spec);
1849 printf ("*predefines:\n%s\n\n", cpp_predefines);
1850 printf ("*cross_compile:\n%d\n\n", cross_compile);
1854 else if (! strcmp (argv[i], "-dumpversion"))
1856 printf ("%s\n", version_string);
1859 else if (! strcmp (argv[i], "-print-libgcc-file-name"))
1861 print_libgcc_file_name = 1;
1863 else if (! strcmp (argv[i], "-Xlinker"))
1865 /* Pass the argument of this option to the linker when we link. */
1868 fatal ("argument to `-Xlinker' is missing");
1871 if (!linker_options)
1873 = (char **) xmalloc (n_linker_options * sizeof (char **));
1876 = (char **) xrealloc (linker_options,
1877 n_linker_options * sizeof (char **));
1879 linker_options[n_linker_options - 1] = argv[++i];
1881 else if (argv[i][0] == '-' && argv[i][1] != 0 && argv[i][1] != 'l')
1883 register char *p = &argv[i][1];
1884 register int c = *p;
1889 if (p[1] == 0 && i + 1 == argc)
1890 fatal ("argument to `-b' is missing");
1892 spec_machine = argv[++i];
1894 spec_machine = p + 1;
1899 int *temp = (int *) xmalloc (sizeof (int));
1901 if (p[1] == 0 && i + 1 == argc)
1902 fatal ("argument to `-B' is missing");
1907 add_prefix (&exec_prefix, value, 1, 0, temp);
1908 add_prefix (&startfile_prefix, value, 1, 0, temp);
1912 case 'v': /* Print our subcommands and print versions. */
1918 if (p[1] == 0 && i + 1 == argc)
1919 fatal ("argument to `-V' is missing");
1921 spec_version = argv[++i];
1923 spec_version = p + 1;
1927 if (!strcmp (p, "save-temps"))
1929 save_temps_flag = 1;
1936 if (SWITCH_TAKES_ARG (c) > (p[1] != 0))
1937 i += SWITCH_TAKES_ARG (c) - (p[1] != 0);
1938 else if (WORD_SWITCH_TAKES_ARG (p))
1939 i += WORD_SWITCH_TAKES_ARG (p);
1946 /* Set up the search paths before we go looking for config files. */
1948 /* These come before the md prefixes so that we will find gcc's subcommands
1949 (such as cpp) rather than those of the host system. */
1950 add_prefix (&exec_prefix, standard_exec_prefix, 0, 1, 0);
1951 add_prefix (&exec_prefix, standard_exec_prefix_1, 0, 1, 0);
1953 add_prefix (&startfile_prefix, standard_exec_prefix, 0, 1, 0);
1954 add_prefix (&startfile_prefix, standard_exec_prefix_1, 0, 1, 0);
1956 /* More prefixes are enabled in main, after we read the specs file
1957 and determine whether this is cross-compilation or not. */
1960 /* Then create the space for the vectors and scan again. */
1962 switches = ((struct switchstr *)
1963 xmalloc ((n_switches + 1) * sizeof (struct switchstr)));
1964 infiles = (struct infile *) xmalloc ((n_infiles + 1) * sizeof (struct infile));
1967 last_language_n_infiles = -1;
1969 /* This, time, copy the text of each switch and store a pointer
1970 to the copy in the vector of switches.
1971 Store all the infiles in their vector. */
1973 for (i = 1; i < argc; i++)
1975 if (!strcmp (argv[i], "-Xlinker"))
1977 else if (! strcmp (argv[i], "-print-libgcc-file-name"))
1979 else if (argv[i][0] == '-' && argv[i][1] != 0 && argv[i][1] != 'l')
1981 register char *p = &argv[i][1];
1982 register int c = *p;
1984 if (c == 'B' || c == 'b' || c == 'V')
1986 /* Skip a separate arg, if any. */
1993 if (p[1] == 0 && i + 1 == argc)
1994 fatal ("argument to `-x' is missing");
1996 spec_lang = argv[++i];
1999 if (! strcmp (spec_lang, "none"))
2000 /* Suppress the warning if -xnone comes after the last input file,
2001 because alternate command interfaces like g++ might find it
2002 useful to place -xnone after each input file. */
2005 last_language_n_infiles = n_infiles;
2008 switches[n_switches].part1 = p;
2009 /* Deal with option arguments in separate argv elements. */
2010 if ((SWITCH_TAKES_ARG (c) > (p[1] != 0))
2011 || WORD_SWITCH_TAKES_ARG (p)) {
2013 int n_args = WORD_SWITCH_TAKES_ARG (p);
2016 /* Count only the option arguments in separate argv elements. */
2017 n_args = SWITCH_TAKES_ARG (c) - (p[1] != 0);
2019 switches[n_switches].args
2020 = (char **) xmalloc ((n_args + 1) * sizeof (char *));
2022 switches[n_switches].args[j++] = argv[++i];
2023 /* Null-terminate the vector. */
2024 switches[n_switches].args[j] = 0;
2025 } else if (*switches_need_spaces != 0 && (c == 'o' || c == 'L')) {
2026 /* On some systems, ld cannot handle -o or -L without space.
2027 So split the -o or -L from its argument. */
2028 switches[n_switches].part1 = (c == 'o' ? "o" : "L");
2029 switches[n_switches].args = (char **) xmalloc (2 * sizeof (char *));
2030 switches[n_switches].args[0] = xmalloc (strlen (p));
2031 strcpy (switches[n_switches].args[0], &p[1]);
2032 switches[n_switches].args[1] = 0;
2034 switches[n_switches].args = 0;
2035 switches[n_switches].valid = 0;
2036 /* This is always valid, since gcc.c itself understands it. */
2037 if (!strcmp (p, "save-temps"))
2038 switches[n_switches].valid = 1;
2043 infiles[n_infiles].language = spec_lang;
2044 infiles[n_infiles++].name = argv[i];
2048 if (n_infiles == last_language_n_infiles)
2049 error ("Warning: `-x %s' after last input file has no effect", spec_lang);
2051 switches[n_switches].part1 = 0;
2052 infiles[n_infiles].name = 0;
2054 /* If we have a GCC_EXEC_PREFIX envvar, modify it for cpp's sake. */
2055 if (gcc_exec_prefix)
2057 temp = (char *) xmalloc (strlen (gcc_exec_prefix) + strlen (spec_version)
2058 + strlen (spec_machine) + 3);
2059 strcpy (temp, gcc_exec_prefix);
2060 strcat (temp, spec_version);
2062 strcat (temp, spec_machine);
2064 gcc_exec_prefix = temp;
2068 /* Process a spec string, accumulating and running commands. */
2070 /* These variables describe the input file name.
2071 input_file_number is the index on outfiles of this file,
2072 so that the output file name can be stored for later use by %o.
2073 input_basename is the start of the part of the input file
2074 sans all directory names, and basename_length is the number
2075 of characters starting there excluding the suffix .c or whatever. */
2077 static char *input_filename;
2078 static int input_file_number;
2079 static int input_filename_length;
2080 static int basename_length;
2081 static char *input_basename;
2082 static char *input_suffix;
2084 /* These are variables used within do_spec and do_spec_1. */
2086 /* Nonzero if an arg has been started and not yet terminated
2087 (with space, tab or newline). */
2088 static int arg_going;
2090 /* Nonzero means %d or %g has been seen; the next arg to be terminated
2091 is a temporary file name. */
2092 static int delete_this_arg;
2094 /* Nonzero means %w has been seen; the next arg to be terminated
2095 is the output file name of this compilation. */
2096 static int this_is_output_file;
2098 /* Nonzero means %s has been seen; the next arg to be terminated
2099 is the name of a library file and we should try the standard
2100 search dirs for it. */
2101 static int this_is_library_file;
2103 /* Process the spec SPEC and run the commands specified therein.
2104 Returns 0 if the spec is successfully processed; -1 if failed. */
2114 delete_this_arg = 0;
2115 this_is_output_file = 0;
2116 this_is_library_file = 0;
2118 value = do_spec_1 (spec, 0, NULL);
2120 /* Force out any unfinished command.
2121 If -pipe, this forces out the last command if it ended in `|'. */
2124 if (argbuf_index > 0 && !strcmp (argbuf[argbuf_index - 1], "|"))
2127 if (argbuf_index > 0)
2134 /* Process the sub-spec SPEC as a portion of a larger spec.
2135 This is like processing a whole spec except that we do
2136 not initialize at the beginning and we do not supply a
2137 newline by default at the end.
2138 INSWITCH nonzero means don't process %-sequences in SPEC;
2139 in this case, % is treated as an ordinary character.
2140 This is used while substituting switches.
2141 INSWITCH nonzero also causes SPC not to terminate an argument.
2143 Value is zero unless a line was finished
2144 and the command on that line reported an error. */
2147 do_spec_1 (spec, inswitch, soft_matched_part)
2150 char *soft_matched_part;
2152 register char *p = spec;
2158 /* If substituting a switch, treat all chars like letters.
2159 Otherwise, NL, SPC, TAB and % are special. */
2160 switch (inswitch ? 'a' : c)
2163 /* End of line: finish any pending argument,
2164 then run the pending command if one has been started. */
2167 obstack_1grow (&obstack, 0);
2168 string = obstack_finish (&obstack);
2169 if (this_is_library_file)
2170 string = find_file (string);
2171 store_arg (string, delete_this_arg, this_is_output_file);
2172 if (this_is_output_file)
2173 outfiles[input_file_number] = string;
2177 if (argbuf_index > 0 && !strcmp (argbuf[argbuf_index - 1], "|"))
2180 for (i = 0; i < n_switches; i++)
2181 if (!strcmp (switches[i].part1, "pipe"))
2184 /* A `|' before the newline means use a pipe here,
2185 but only if -pipe was specified.
2186 Otherwise, execute now and don't pass the `|' as an arg. */
2189 switches[i].valid = 1;
2196 if (argbuf_index > 0)
2198 int value = execute ();
2202 /* Reinitialize for a new command, and for a new argument. */
2205 delete_this_arg = 0;
2206 this_is_output_file = 0;
2207 this_is_library_file = 0;
2211 /* End any pending argument. */
2214 obstack_1grow (&obstack, 0);
2215 string = obstack_finish (&obstack);
2216 if (this_is_library_file)
2217 string = find_file (string);
2218 store_arg (string, delete_this_arg, this_is_output_file);
2219 if (this_is_output_file)
2220 outfiles[input_file_number] = string;
2224 obstack_1grow (&obstack, c);
2230 /* Space or tab ends an argument if one is pending. */
2233 obstack_1grow (&obstack, 0);
2234 string = obstack_finish (&obstack);
2235 if (this_is_library_file)
2236 string = find_file (string);
2237 store_arg (string, delete_this_arg, this_is_output_file);
2238 if (this_is_output_file)
2239 outfiles[input_file_number] = string;
2241 /* Reinitialize for a new argument. */
2243 delete_this_arg = 0;
2244 this_is_output_file = 0;
2245 this_is_library_file = 0;
2252 fatal ("Invalid specification! Bug in cc.");
2255 obstack_grow (&obstack, input_basename, basename_length);
2260 delete_this_arg = 2;
2263 /* Dump out the directories specified with LIBRARY_PATH,
2264 followed by the absolute directories
2265 that we search for startfiles. */
2267 for (i = 0; i < 2; i++)
2269 struct prefix_list *pl
2270 = (i == 0 ? library_prefix.plist : startfile_prefix.plist);
2272 char *buffer = (char *) xmalloc (bufsize);
2275 for (; pl; pl = pl->next)
2277 #ifdef RELATIVE_PREFIX_NOT_LINKDIR
2278 /* Used on systems which record the specified -L dirs
2279 and use them to search for dynamic linking. */
2280 /* Relative directories always come from -B,
2281 and it is better not to use them for searching
2282 at run time. In particular, stage1 loses */
2283 if (pl->prefix[0] != '/')
2288 if (is_linker_dir (pl->prefix, machine_suffix))
2290 do_spec_1 ("-L", 0, 0);
2291 #ifdef SPACE_AFTER_L_OPTION
2292 do_spec_1 (" ", 0, 0);
2294 do_spec_1 (pl->prefix, 1, 0);
2295 /* Remove slash from machine_suffix. */
2296 if (strlen (machine_suffix) >= bufsize)
2297 bufsize = strlen (machine_suffix) * 2 + 1;
2298 buffer = (char *) xrealloc (buffer, bufsize);
2299 strcpy (buffer, machine_suffix);
2300 idx = strlen (buffer);
2301 if (buffer[idx - 1] == '/')
2302 buffer[idx - 1] = 0;
2303 do_spec_1 (buffer, 1, 0);
2304 /* Make this a separate argument. */
2305 do_spec_1 (" ", 0, 0);
2308 if (!pl->require_machine_suffix)
2310 if (is_linker_dir (pl->prefix, ""))
2312 do_spec_1 ("-L", 0, 0);
2313 #ifdef SPACE_AFTER_L_OPTION
2314 do_spec_1 (" ", 0, 0);
2316 /* Remove slash from pl->prefix. */
2317 if (strlen (pl->prefix) >= bufsize)
2318 bufsize = strlen (pl->prefix) * 2 + 1;
2319 buffer = (char *) xrealloc (buffer, bufsize);
2320 strcpy (buffer, pl->prefix);
2321 idx = strlen (buffer);
2322 if (buffer[idx - 1] == '/')
2323 buffer[idx - 1] = 0;
2324 do_spec_1 (buffer, 1, 0);
2325 /* Make this a separate argument. */
2326 do_spec_1 (" ", 0, 0);
2335 /* {...:%efoo} means report an error with `foo' as error message
2336 and don't execute any more commands for this file. */
2340 while (*p != 0 && *p != '\n') p++;
2341 buf = (char *) alloca (p - q + 1);
2342 strncpy (buf, q, p - q);
2350 if (save_temps_flag)
2351 obstack_grow (&obstack, input_basename, basename_length);
2354 obstack_grow (&obstack, temp_filename, temp_filename_length);
2355 delete_this_arg = 1;
2361 obstack_grow (&obstack, input_filename, input_filename_length);
2366 if (gcc_exec_prefix)
2368 do_spec_1 ("-imacros", 1, 0);
2369 /* Make this a separate argument. */
2370 do_spec_1 (" ", 0, 0);
2371 do_spec_1 (gcc_exec_prefix, 1, 0);
2372 do_spec_1 (" ", 0, 0);
2379 for (f = 0; f < n_infiles; f++)
2380 store_arg (outfiles[f], 0, 0);
2385 this_is_library_file = 1;
2389 this_is_output_file = 1;
2394 int index = argbuf_index;
2395 /* Handle the {...} following the %W. */
2398 p = handle_braces (p + 1);
2401 /* If any args were output, mark the last one for deletion
2403 if (argbuf_index != index)
2404 record_temp_file (argbuf[argbuf_index - 1], 0, 1);
2408 /* %x{OPTION} records OPTION for %X to output. */
2414 /* Skip past the option value and make a copy. */
2419 string = save_string (p1 + 1, p - p1 - 2);
2421 /* See if we already recorded this option. */
2422 for (i = 0; i < n_linker_options; i++)
2423 if (! strcmp (string, linker_options[i]))
2429 /* This option is new; add it. */
2431 if (!linker_options)
2433 = (char **) xmalloc (n_linker_options * sizeof (char **));
2436 = (char **) xrealloc (linker_options,
2437 n_linker_options * sizeof (char **));
2439 linker_options[n_linker_options - 1] = string;
2443 /* Dump out the options accumulated previously using %x. */
2445 for (i = 0; i < n_linker_options; i++)
2447 do_spec_1 (linker_options[i], 1, NULL);
2448 /* Make each accumulated option a separate argument. */
2449 do_spec_1 (" ", 0, NULL);
2453 /* Here are digits and numbers that just process
2454 a certain constant string as a spec. */
2457 do_spec_1 (cc1_spec, 0, NULL);
2461 do_spec_1 (cc1plus_spec, 0, NULL);
2465 do_spec_1 (asm_spec, 0, NULL);
2469 do_spec_1 (asm_final_spec, 0, NULL);
2473 do_spec_1 (signed_char_spec, 0, NULL);
2477 do_spec_1 (cpp_spec, 0, NULL);
2481 do_spec_1 (endfile_spec, 0, NULL);
2485 do_spec_1 (link_spec, 0, NULL);
2489 do_spec_1 (lib_spec, 0, NULL);
2494 char *x = (char *) alloca (strlen (cpp_predefines) + 1);
2498 /* Copy all of the -D options in CPP_PREDEFINES into BUF. */
2502 if (! strncmp (y, "-D", 2))
2503 /* Copy the whole option. */
2504 while (*y && *y != ' ' && *y != '\t')
2506 else if (*y == ' ' || *y == '\t')
2507 /* Copy whitespace to the result. */
2509 /* Don't copy other options. */
2516 do_spec_1 (buf, 0, NULL);
2522 char *x = (char *) alloca (strlen (cpp_predefines) * 4 + 1);
2526 /* Copy all of CPP_PREDEFINES into BUF,
2527 but put __ after every -D and at the end of each arg. */
2531 if (! strncmp (y, "-D", 2))
2538 if (strncmp (y, "__", 2))
2540 /* Stick __ at front of macro name. */
2543 /* Arrange to stick __ at the end as well. */
2547 /* Copy the macro name. */
2548 while (*y && *y != '=' && *y != ' ' && *y != '\t')
2557 /* Copy the value given, if any. */
2558 while (*y && *y != ' ' && *y != '\t')
2561 else if (*y == ' ' || *y == '\t')
2562 /* Copy whitespace to the result. */
2564 /* Don't copy -A options */
2570 /* Copy all of CPP_PREDEFINES into BUF,
2571 but put __ after every -D. */
2575 if (! strncmp (y, "-D", 2))
2580 if (strncmp (y, "__", 2))
2582 /* Stick __ at front of macro name. */
2587 /* Copy the macro name. */
2588 while (*y && *y != '=' && *y != ' ' && *y != '\t')
2591 /* Copy the value given, if any. */
2592 while (*y && *y != ' ' && *y != '\t')
2595 else if (*y == ' ' || *y == '\t')
2596 /* Copy whitespace to the result. */
2598 /* Don't copy -A options */
2604 /* Copy all of the -A options in CPP_PREDEFINES into BUF. */
2608 if (! strncmp (y, "-A", 2))
2609 /* Copy the whole option. */
2610 while (*y && *y != ' ' && *y != '\t')
2612 else if (*y == ' ' || *y == '\t')
2613 /* Copy whitespace to the result. */
2615 /* Don't copy other options. */
2622 do_spec_1 (buf, 0, NULL);
2627 do_spec_1 (startfile_spec, 0, NULL);
2630 /* Here we define characters other than letters and digits. */
2633 p = handle_braces (p);
2639 obstack_1grow (&obstack, '%');
2643 do_spec_1 (soft_matched_part, 1, NULL);
2644 do_spec_1 (" ", 0, NULL);
2647 /* Process a string found as the value of a spec given by name.
2648 This feature allows individual machine descriptions
2649 to add and use their own specs.
2650 %[...] modifies -D options the way %P does;
2651 %(...) uses the spec unmodified. */
2656 struct spec_list *sl;
2659 /* The string after the S/P is the name of a spec that is to be
2661 while (*p && *p != ')' && *p != ']')
2664 /* See if it's in the list */
2665 for (len = p - name, sl = specs; sl; sl = sl->next)
2666 if (strncmp (sl->name, name, len) == 0 && !sl->name[len])
2675 do_spec_1 (name, 0, NULL);
2678 char *x = (char *) alloca (strlen (name) * 2 + 1);
2682 /* Copy all of NAME into BUF, but put __ after
2683 every -D and at the end of each arg, */
2686 if (! strncmp (y, "-D", 2))
2694 else if (*y == ' ' || *y == 0)
2708 do_spec_1 (buf, 0, NULL);
2712 /* Discard the closing paren or bracket. */
2724 /* Backslash: treat next character as ordinary. */
2729 /* Ordinary character: put it into the current argument. */
2730 obstack_1grow (&obstack, c);
2734 return 0; /* End of string */
2737 /* Return 0 if we call do_spec_1 and that returns -1. */
2750 /* A `|' after the open-brace means,
2751 if the test fails, output a single minus sign rather than nothing.
2752 This is used in %{|!pipe:...}. */
2756 /* A `!' after the open-brace negates the condition:
2757 succeed if the specified switch is not present. */
2761 /* A `.' after the open-brace means test against the current suffix. */
2771 while (*p != ':' && *p != '}') p++;
2774 register int count = 1;
2792 int found = (input_suffix != 0
2793 && strlen (input_suffix) == p - filter
2794 && strncmp (input_suffix, filter, p - filter) == 0);
2800 && do_spec_1 (save_string (p + 1, q - p - 2), 0, NULL) < 0)
2805 else if (p[-1] == '*' && p[0] == '}')
2807 /* Substitute all matching switches as separate args. */
2810 for (i = 0; i < n_switches; i++)
2811 if (!strncmp (switches[i].part1, filter, p - filter))
2816 /* Test for presence of the specified switch. */
2820 /* If name specified ends in *, as in {x*:...},
2821 check for %* and handle that case. */
2822 if (p[-1] == '*' && !negate)
2827 /* First see whether we have %*. */
2831 if (*r == '%' && r[1] == '*')
2835 /* If we do, handle that case. */
2838 /* Substitute all matching switches as separate args.
2839 But do this by substituting for %*
2840 in the text that follows the colon. */
2842 unsigned hard_match_len = p - filter - 1;
2843 char *string = save_string (p + 1, q - p - 2);
2845 for (i = 0; i < n_switches; i++)
2846 if (!strncmp (switches[i].part1, filter, hard_match_len))
2848 do_spec_1 (string, 0, &switches[i].part1[hard_match_len]);
2849 /* Pass any arguments this switch has. */
2857 /* If name specified ends in *, as in {x*:...},
2858 check for presence of any switch name starting with x. */
2861 for (i = 0; i < n_switches; i++)
2863 unsigned hard_match_len = p - filter - 1;
2865 if (!strncmp (switches[i].part1, filter, hard_match_len))
2867 switches[i].valid = 1;
2872 /* Otherwise, check for presence of exact name specified. */
2875 for (i = 0; i < n_switches; i++)
2877 if (!strncmp (switches[i].part1, filter, p - filter)
2878 && switches[i].part1[p - filter] == 0)
2880 switches[i].valid = 1;
2887 /* If it is as desired (present for %{s...}, absent for %{-s...})
2888 then substitute either the switch or the specified
2889 conditional text. */
2890 if (present != negate)
2898 if (do_spec_1 (save_string (p + 1, q - p - 2), 0, NULL) < 0)
2904 /* Here if a %{|...} conditional fails: output a minus sign,
2905 which means "standard output" or "standard input". */
2906 do_spec_1 ("-", 0, NULL);
2913 /* Pass a switch to the current accumulating command
2914 in the same form that we received it.
2915 SWITCHNUM identifies the switch; it is an index into
2916 the vector of switches gcc received, which is `switches'.
2917 This cannot fail since it never finishes a command line.
2919 If OMIT_FIRST_WORD is nonzero, then we omit .part1 of the argument. */
2922 give_switch (switchnum, omit_first_word)
2924 int omit_first_word;
2926 if (!omit_first_word)
2928 do_spec_1 ("-", 0, NULL);
2929 do_spec_1 (switches[switchnum].part1, 1, NULL);
2931 do_spec_1 (" ", 0, NULL);
2932 if (switches[switchnum].args != 0)
2935 for (p = switches[switchnum].args; *p; p++)
2937 do_spec_1 (*p, 1, NULL);
2938 do_spec_1 (" ", 0, NULL);
2941 switches[switchnum].valid = 1;
2944 /* Search for a file named NAME trying various prefixes including the
2945 user's -B prefix and some standard ones.
2946 Return the absolute file name found. If nothing is found, return NAME. */
2954 newname = find_a_file (&startfile_prefix, name, R_OK);
2955 return newname ? newname : name;
2958 /* Determine whether a -L option is relevant. Not required for certain
2959 fixed names and for directories that don't exist. */
2962 is_linker_dir (path1, path2)
2966 int len1 = strlen (path1);
2967 int len2 = strlen (path2);
2968 char *path = (char *) alloca (3 + len1 + len2);
2972 /* Construct the path from the two parts. Ensure the string ends with "/.".
2973 The resulting path will be a directory even if the given path is a
2975 bcopy (path1, path, len1);
2976 bcopy (path2, path + len1, len2);
2977 cp = path + len1 + len2;
2983 /* Exclude directories that the linker is known to search. */
2984 if ((cp - path == 6 && strcmp (path, "/lib/.") == 0)
2985 || (cp - path == 10 && strcmp (path, "/usr/lib/.") == 0))
2988 return (stat (path, &st) >= 0 && S_ISDIR (st.st_mode));
2991 /* On fatal signals, delete all the temporary files. */
2994 fatal_error (signum)
2997 signal (signum, SIG_DFL);
2998 delete_failure_queue ();
2999 delete_temp_files ();
3000 /* Get the same signal again, this time not handled,
3001 so its normal effect occurs. */
3002 kill (getpid (), signum);
3012 int error_count = 0;
3013 int linker_was_run = 0;
3014 char *explicit_link_files;
3017 programname = argv[0];
3019 if (signal (SIGINT, SIG_IGN) != SIG_IGN)
3020 signal (SIGINT, fatal_error);
3021 if (signal (SIGHUP, SIG_IGN) != SIG_IGN)
3022 signal (SIGHUP, fatal_error);
3023 if (signal (SIGTERM, SIG_IGN) != SIG_IGN)
3024 signal (SIGTERM, fatal_error);
3026 if (signal (SIGPIPE, SIG_IGN) != SIG_IGN)
3027 signal (SIGPIPE, fatal_error);
3031 argbuf = (char **) xmalloc (argbuf_length * sizeof (char *));
3033 obstack_init (&obstack);
3035 /* Set up to remember the pathname of gcc and any options
3036 needed for collect. */
3037 obstack_init (&collect_obstack);
3038 obstack_grow (&collect_obstack, "COLLECT_GCC=", sizeof ("COLLECT_GCC=")-1);
3039 obstack_grow (&collect_obstack, programname, strlen (programname)+1);
3040 putenv (obstack_finish (&collect_obstack));
3042 /* Choose directory for temp files. */
3044 choose_temp_base ();
3046 /* Make a table of what switches there are (switches, n_switches).
3047 Make a table of specified input files (infiles, n_infiles).
3048 Decode switches that are handled locally. */
3050 process_command (argc, argv);
3052 /* Initialize the vector of specs to just the default.
3053 This means one element containing 0s, as a terminator. */
3055 compilers = (struct compiler *) xmalloc (sizeof default_compilers);
3056 bcopy (default_compilers, compilers, sizeof default_compilers);
3057 n_compilers = n_default_compilers;
3059 /* Read specs from a file if there is one. */
3061 machine_suffix = concat (spec_machine, "/", concat (spec_version, "/", ""));
3063 specs_file = find_a_file (&startfile_prefix, "specs", R_OK);
3064 /* Read the specs file unless it is a default one. */
3065 if (specs_file != 0 && strcmp (specs_file, "specs"))
3066 read_specs (specs_file);
3068 /* If not cross-compiling, look for startfiles in the standard places. */
3069 /* The fact that these are done here, after reading the specs file,
3070 means that it cannot be found in these directories.
3071 But that's okay. It should never be there anyway. */
3074 #ifdef MD_EXEC_PREFIX
3075 add_prefix (&exec_prefix, md_exec_prefix, 0, 0, 0);
3076 add_prefix (&startfile_prefix, md_exec_prefix, 0, 0, 0);
3079 #ifdef MD_STARTFILE_PREFIX
3080 add_prefix (&startfile_prefix, md_startfile_prefix, 0, 0, 0);
3083 #ifdef MD_STARTFILE_PREFIX_1
3084 add_prefix (&startfile_prefix, md_startfile_prefix_1, 0, 0, 0);
3087 add_prefix (&startfile_prefix, standard_startfile_prefix, 0, 0, 0);
3088 add_prefix (&startfile_prefix, standard_startfile_prefix_1, 0, 0, 0);
3089 add_prefix (&startfile_prefix, standard_startfile_prefix_2, 0, 0, 0);
3090 #if 0 /* Can cause surprises, and one can use -B./ instead. */
3091 add_prefix (&startfile_prefix, "./", 0, 1, 0);
3095 /* Now we have the specs.
3096 Set the `valid' bits for switches that match anything in any spec. */
3098 validate_all_switches ();
3100 /* Warn about any switches that no pass was interested in. */
3102 for (i = 0; i < n_switches; i++)
3103 if (! switches[i].valid)
3104 error ("unrecognized option `-%s'", switches[i].part1);
3106 if (print_libgcc_file_name)
3108 printf ("%s\n", find_file ("libgcc.a"));
3112 /* Obey some of the options. */
3116 fprintf (stderr, "gcc version %s\n", version_string);
3122 fatal ("No input files specified.");
3124 /* Make a place to record the compiler output file names
3125 that correspond to the input files. */
3127 outfiles = (char **) xmalloc (n_infiles * sizeof (char *));
3128 bzero (outfiles, n_infiles * sizeof (char *));
3130 /* Record which files were specified explicitly as link input. */
3132 explicit_link_files = xmalloc (n_infiles);
3133 bzero (explicit_link_files, n_infiles);
3135 for (i = 0; i < n_infiles; i++)
3137 register struct compiler *cp = 0;
3138 int this_file_error = 0;
3140 /* Tell do_spec what to substitute for %i. */
3142 input_filename = infiles[i].name;
3143 input_filename_length = strlen (input_filename);
3144 input_file_number = i;
3146 /* Use the same thing in %o, unless cp->spec says otherwise. */
3148 outfiles[i] = input_filename;
3150 /* Figure out which compiler from the file's suffix. */
3152 cp = lookup_compiler (infiles[i].name, input_filename_length,
3153 infiles[i].language);
3157 /* Ok, we found an applicable compiler. Run its spec. */
3158 /* First say how much of input_filename to substitute for %b */
3161 input_basename = input_filename;
3162 for (p = input_filename; *p; p++)
3164 input_basename = p + 1;
3166 /* Find a suffix starting with the last period,
3167 and set basename_length to exclude that suffix. */
3168 basename_length = strlen (input_basename);
3169 p = input_basename + basename_length;
3170 while (p != input_basename && *p != '.') --p;
3171 if (*p == '.' && p != input_basename)
3173 basename_length = p - input_basename;
3174 input_suffix = p + 1;
3179 value = do_spec (cp->spec);
3181 this_file_error = 1;
3184 /* If this file's name does not contain a recognized suffix,
3185 record it as explicit linker input. */
3188 explicit_link_files[i] = 1;
3190 /* Clear the delete-on-failure queue, deleting the files in it
3191 if this compilation failed. */
3193 if (this_file_error)
3195 delete_failure_queue ();
3198 /* If this compilation succeeded, don't delete those files later. */
3199 clear_failure_queue ();
3202 /* Run ld to link all the compiler output files. */
3204 if (error_count == 0)
3206 int tmp = execution_count;
3210 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
3212 putenv_from_prefixes (&exec_prefix, "COMPILER_PATH=");
3213 putenv_from_prefixes (&startfile_prefix, "LIBRARY_PATH=");
3215 /* Build COLLECT_GCC_OPTIONS to have all of the options specified to
3217 obstack_grow (&collect_obstack, "COLLECT_GCC_OPTIONS=",
3218 sizeof ("COLLECT_GCC_OPTIONS=")-1);
3221 for (i = 0; i < n_switches; i++)
3225 obstack_grow (&collect_obstack, " ", 1);
3228 obstack_grow (&collect_obstack, "-", 1);
3229 obstack_grow (&collect_obstack, switches[i].part1,
3230 strlen (switches[i].part1));
3232 for (args = switches[i].args; args && *args; args++)
3234 obstack_grow (&collect_obstack, " ", 1);
3235 obstack_grow (&collect_obstack, *args, strlen (*args));
3238 obstack_grow (&collect_obstack, "\0", 1);
3239 putenv (obstack_finish (&collect_obstack));
3241 value = do_spec (link_command_spec);
3244 linker_was_run = (tmp != execution_count);
3247 /* Warn if a -B option was specified but the prefix was never used. */
3248 unused_prefix_warnings (&exec_prefix);
3249 unused_prefix_warnings (&startfile_prefix);
3251 /* If options said don't run linker,
3252 complain about input files to be given to the linker. */
3254 if (! linker_was_run && error_count == 0)
3255 for (i = 0; i < n_infiles; i++)
3256 if (explicit_link_files[i])
3257 error ("%s: linker input file unused since linking not done",
3260 /* Delete some or all of the temporary files we made. */
3263 delete_failure_queue ();
3264 delete_temp_files ();
3271 /* Find the proper compilation spec for the file name NAME,
3272 whose length is LENGTH. LANGUAGE is the specified language,
3273 or 0 if none specified. */
3275 static struct compiler *
3276 lookup_compiler (name, length, language)
3281 struct compiler *cp;
3283 /* Look for the language, if one is spec'd. */
3286 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
3290 if (cp->suffix[0] == '@'
3291 && !strcmp (cp->suffix + 1, language))
3295 error ("language %s not recognized", language);
3298 /* Look for a suffix. */
3299 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
3301 if (strlen (cp->suffix) < length
3302 /* See if the suffix matches the end of NAME. */
3303 && !strcmp (cp->suffix,
3304 name + length - strlen (cp->suffix))
3305 /* The suffix `-' matches only the file name `-'. */
3306 && !(!strcmp (cp->suffix, "-") && length != 1))
3308 if (cp->spec[0] == '@')
3310 struct compiler *new;
3311 /* An alias entry maps a suffix to a language.
3312 Search for the language; pass 0 for NAME and LENGTH
3313 to avoid infinite recursion if language not found.
3314 Construct the new compiler spec. */
3315 language = cp->spec + 1;
3316 new = (struct compiler *) xmalloc (sizeof (struct compiler));
3317 new->suffix = cp->suffix;
3318 new->spec = lookup_compiler (0, 0, language)->spec;
3321 /* A non-alias entry: return it. */
3333 register char *value = (char *) malloc (size);
3335 fatal ("virtual memory exhausted");
3340 xrealloc (ptr, size)
3344 register char *value = (char *) realloc (ptr, size);
3346 fatal ("virtual memory exhausted");
3350 /* Return a newly-allocated string whose contents concatenate those of s1, s2, s3. */
3356 int len1 = strlen (s1), len2 = strlen (s2), len3 = strlen (s3);
3357 char *result = xmalloc (len1 + len2 + len3 + 1);
3359 strcpy (result, s1);
3360 strcpy (result + len1, s2);
3361 strcpy (result + len1 + len2, s3);
3362 *(result + len1 + len2 + len3) = 0;
3368 save_string (s, len)
3372 register char *result = xmalloc (len + 1);
3374 bcopy (s, result, len);
3380 pfatal_with_name (name)
3385 if (errno < sys_nerr)
3386 s = concat ("%s: ", sys_errlist[errno], "");
3388 s = "cannot open %s";
3393 perror_with_name (name)
3398 if (errno < sys_nerr)
3399 s = concat ("%s: ", sys_errlist[errno], "");
3401 s = "cannot open %s";
3411 if (errno < sys_nerr)
3412 s = concat ("installation problem, cannot exec %s: ",
3413 sys_errlist[errno], "");
3415 s = "installation problem, cannot exec %s";
3419 /* More 'friendly' abort that prints the line and file.
3420 config.h can #define abort fancy_abort if you like that sort of thing. */
3425 fatal ("Internal gcc abort.");
3430 /* Output an error message and exit */
3440 format = va_arg (ap, char *);
3441 fprintf (stderr, "%s: ", programname);
3442 vfprintf (stderr, format, ap);
3444 fprintf (stderr, "\n");
3445 delete_temp_files ();
3457 format = va_arg (ap, char *);
3458 fprintf (stderr, "%s: ", programname);
3459 vfprintf (stderr, format, ap);
3462 fprintf (stderr, "\n");
3465 #else /* not HAVE_VPRINTF */
3468 fatal (msg, arg1, arg2)
3469 char *msg, *arg1, *arg2;
3471 error (msg, arg1, arg2);
3472 delete_temp_files ();
3477 error (msg, arg1, arg2)
3478 char *msg, *arg1, *arg2;
3480 fprintf (stderr, "%s: ", programname);
3481 fprintf (stderr, msg, arg1, arg2);
3482 fprintf (stderr, "\n");
3485 #endif /* not HAVE_VPRINTF */
3489 validate_all_switches ()
3491 struct compiler *comp;
3494 struct spec_list *spec;
3496 for (comp = compilers; comp->spec; comp++)
3500 if (c == '%' && *p == '{')
3501 /* We have a switch spec. */
3502 validate_switches (p + 1);
3505 /* look through the linked list of extra specs read from the specs file */
3506 for (spec = specs ; spec ; spec = spec->next)
3510 if (c == '%' && *p == '{')
3511 /* We have a switch spec. */
3512 validate_switches (p + 1);
3515 p = link_command_spec;
3517 if (c == '%' && *p == '{')
3518 /* We have a switch spec. */
3519 validate_switches (p + 1);
3521 /* Now notice switches mentioned in the machine-specific specs. */
3525 if (c == '%' && *p == '{')
3526 /* We have a switch spec. */
3527 validate_switches (p + 1);
3531 if (c == '%' && *p == '{')
3532 /* We have a switch spec. */
3533 validate_switches (p + 1);
3537 if (c == '%' && *p == '{')
3538 /* We have a switch spec. */
3539 validate_switches (p + 1);
3541 p = signed_char_spec;
3543 if (c == '%' && *p == '{')
3544 /* We have a switch spec. */
3545 validate_switches (p + 1);
3549 if (c == '%' && *p == '{')
3550 /* We have a switch spec. */
3551 validate_switches (p + 1);
3555 if (c == '%' && *p == '{')
3556 /* We have a switch spec. */
3557 validate_switches (p + 1);
3561 if (c == '%' && *p == '{')
3562 /* We have a switch spec. */
3563 validate_switches (p + 1);
3567 if (c == '%' && *p == '{')
3568 /* We have a switch spec. */
3569 validate_switches (p + 1);
3573 if (c == '%' && *p == '{')
3574 /* We have a switch spec. */
3575 validate_switches (p + 1);
3578 /* Look at the switch-name that comes after START
3579 and mark as valid all supplied switches that match it. */
3582 validate_switches (start)
3585 register char *p = start;
3600 while (*p != ':' && *p != '}') p++;
3604 else if (p[-1] == '*')
3606 /* Mark all matching switches as valid. */
3608 for (i = 0; i < n_switches; i++)
3609 if (!strncmp (switches[i].part1, filter, p - filter))
3610 switches[i].valid = 1;
3614 /* Mark an exact matching switch as valid. */
3615 for (i = 0; i < n_switches; i++)
3617 if (!strncmp (switches[i].part1, filter, p - filter)
3618 && switches[i].part1[p - filter] == 0)
3619 switches[i].valid = 1;