1 /* Wrapper to call lto. Used by collect2 and the linker plugin.
2 Copyright (C) 2009-2014 Free Software Foundation, Inc.
4 Factored out of collect2 by Rafael Espindola <espindola@google.com>
6 This file is part of GCC.
8 GCC is free software; you can redistribute it and/or modify it under
9 the terms of the GNU General Public License as published by the Free
10 Software Foundation; either version 3, or (at your option) any later
13 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
14 WARRANTY; without even the implied warranty of MERCHANTABILITY or
15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
18 You should have received a copy of the GNU General Public License
19 along with GCC; see the file COPYING3. If not see
20 <http://www.gnu.org/licenses/>. */
23 /* This program is passed a gcc, a list of gcc arguments and a list of
24 object files containing IL. It scans the argument list to check if
25 we are in whopr mode or not modifies the arguments and needed and
26 prints a list of output files on stdout.
30 $ lto-wrapper gcc/xgcc -B gcc a.o b.o -o test -flto
32 The above will print something like
35 If WHOPR is used instead, more than one file might be produced
36 ./ccXj2DTk.lto.ltrans.o
37 ./ccCJuXGv.lto.ltrans.o
42 #include "coretypes.h"
44 #include "diagnostic.h"
48 #include "simple-object.h"
50 /* From lto-streamer.h which we cannot include with -fkeep-inline-functions.
51 ??? Split out a lto-streamer-core.h. */
53 #define LTO_SECTION_NAME_PREFIX ".gnu.lto_"
55 /* End of lto-streamer.h copy. */
57 int debug
; /* true if -save-temps. */
58 int verbose
; /* true if -v. */
61 LTO_MODE_NONE
, /* Not doing LTO. */
62 LTO_MODE_LTO
, /* Normal LTO. */
63 LTO_MODE_WHOPR
/* WHOPR. */
66 /* Current LTO mode. */
67 static enum lto_mode_d lto_mode
= LTO_MODE_NONE
;
69 static char *ltrans_output_file
;
70 static char *flto_out
;
71 static char *args_name
;
72 static unsigned int nr
;
73 static char **input_names
;
74 static char **output_names
;
75 static char *makefile
;
77 static void maybe_unlink_file (const char *);
79 /* Delete tempfiles. */
82 lto_wrapper_cleanup (void)
84 static bool cleanup_done
= false;
90 /* Setting cleanup_done prevents an infinite loop if one of the
91 calls to maybe_unlink_file fails. */
94 if (ltrans_output_file
)
95 maybe_unlink_file (ltrans_output_file
);
97 maybe_unlink_file (flto_out
);
99 maybe_unlink_file (args_name
);
101 maybe_unlink_file (makefile
);
102 for (i
= 0; i
< nr
; ++i
)
104 maybe_unlink_file (input_names
[i
]);
106 maybe_unlink_file (output_names
[i
]);
111 fatal_signal (int signum
)
113 signal (signum
, SIG_DFL
);
114 lto_wrapper_cleanup ();
115 /* Get the same signal again, this time not handled,
116 so its normal effect occurs. */
117 kill (getpid (), signum
);
120 /* Just die. CMSGID is the error message. */
122 static void __attribute__ ((format (printf
, 1, 2)))
123 fatal (const char * cmsgid
, ...)
127 va_start (ap
, cmsgid
);
128 fprintf (stderr
, "lto-wrapper: ");
129 vfprintf (stderr
, _(cmsgid
), ap
);
130 fprintf (stderr
, "\n");
133 lto_wrapper_cleanup ();
134 exit (FATAL_EXIT_CODE
);
138 /* Die when sys call fails. CMSGID is the error message. */
140 static void __attribute__ ((format (printf
, 1, 2)))
141 fatal_perror (const char *cmsgid
, ...)
146 va_start (ap
, cmsgid
);
147 fprintf (stderr
, "lto-wrapper: ");
148 vfprintf (stderr
, _(cmsgid
), ap
);
149 fprintf (stderr
, ": %s\n", xstrerror (e
));
152 lto_wrapper_cleanup ();
153 exit (FATAL_EXIT_CODE
);
157 /* Execute a program, and wait for the reply. ARGV are the arguments. The
158 last one must be NULL. */
160 static struct pex_obj
*
161 collect_execute (char **argv
)
172 for (p_argv
= argv
; (str
= *p_argv
) != (char *) 0; p_argv
++)
173 fprintf (stderr
, " %s", str
);
175 fprintf (stderr
, "\n");
181 pex
= pex_init (0, "lto-wrapper", NULL
);
183 fatal_perror ("pex_init failed");
185 /* Do not use PEX_LAST here, we use our stdout for communicating with
186 collect2 or the linker-plugin. Any output from the sub-process
187 will confuse that. */
188 errmsg
= pex_run (pex
, PEX_SEARCH
, argv
[0], argv
, NULL
,
195 fatal_perror (errmsg
);
205 /* Wait for a process to finish, and exit if a nonzero status is found.
206 PROG is the program name. PEX is the process we should wait for. */
209 collect_wait (const char *prog
, struct pex_obj
*pex
)
213 if (!pex_get_status (pex
, 1, &status
))
214 fatal_perror ("can't get program status");
219 if (WIFSIGNALED (status
))
221 int sig
= WTERMSIG (status
);
222 if (WCOREDUMP (status
))
223 fatal ("%s terminated with signal %d [%s], core dumped",
224 prog
, sig
, strsignal (sig
));
226 fatal ("%s terminated with signal %d [%s]",
227 prog
, sig
, strsignal (sig
));
230 if (WIFEXITED (status
))
231 fatal ("%s returned %d exit status", prog
, WEXITSTATUS (status
));
238 /* Unlink a temporary LTRANS file unless requested otherwise. */
241 maybe_unlink_file (const char *file
)
245 if (unlink_if_ordinary (file
)
247 fatal_perror ("deleting LTRANS file %s", file
);
250 fprintf (stderr
, "[Leaving LTRANS %s]\n", file
);
254 /* Execute program ARGV[0] with arguments ARGV. Wait for it to finish. */
257 fork_execute (char **argv
)
265 args_name
= make_temp_file (".args");
266 at_args
= concat ("@", args_name
, NULL
);
267 args
= fopen (args_name
, "w");
269 fatal ("failed to open %s", args_name
);
271 status
= writeargv (&argv
[1], args
);
274 fatal ("could not write to temporary file %s", args_name
);
278 new_argv
[0] = argv
[0];
279 new_argv
[1] = at_args
;
282 pex
= collect_execute (new_argv
);
283 collect_wait (new_argv
[0], pex
);
285 maybe_unlink_file (args_name
);
290 /* Template of LTRANS dumpbase suffix. */
291 #define DUMPBASE_SUFFIX ".ltrans18446744073709551615"
293 /* Create decoded options from the COLLECT_GCC and COLLECT_GCC_OPTIONS
294 environment according to LANG_MASK. */
297 get_options_from_collect_gcc_options (const char *collect_gcc
,
298 const char *collect_gcc_options
,
299 unsigned int lang_mask
,
300 struct cl_decoded_option
**decoded_options
,
301 unsigned int *decoded_options_count
)
303 struct obstack argv_obstack
;
308 argv_storage
= xstrdup (collect_gcc_options
);
309 obstack_init (&argv_obstack
);
310 obstack_ptr_grow (&argv_obstack
, collect_gcc
);
312 for (j
= 0, k
= 0; argv_storage
[j
] != '\0'; ++j
)
314 if (argv_storage
[j
] == '\'')
316 obstack_ptr_grow (&argv_obstack
, &argv_storage
[k
]);
320 if (argv_storage
[j
] == '\0')
321 fatal ("malformed COLLECT_GCC_OPTIONS");
322 else if (strncmp (&argv_storage
[j
], "'\\''", 4) == 0)
324 argv_storage
[k
++] = '\'';
327 else if (argv_storage
[j
] == '\'')
330 argv_storage
[k
++] = argv_storage
[j
++];
333 argv_storage
[k
++] = '\0';
337 obstack_ptr_grow (&argv_obstack
, NULL
);
338 argc
= obstack_object_size (&argv_obstack
) / sizeof (void *) - 1;
339 argv
= XOBFINISH (&argv_obstack
, const char **);
341 decode_cmdline_options_to_array (argc
, (const char **)argv
,
343 decoded_options
, decoded_options_count
);
344 obstack_free (&argv_obstack
, NULL
);
347 /* Append OPTION to the options array DECODED_OPTIONS with size
348 DECODED_OPTIONS_COUNT. */
351 append_option (struct cl_decoded_option
**decoded_options
,
352 unsigned int *decoded_options_count
,
353 struct cl_decoded_option
*option
)
355 ++*decoded_options_count
;
357 = (struct cl_decoded_option
*)
358 xrealloc (*decoded_options
,
359 (*decoded_options_count
360 * sizeof (struct cl_decoded_option
)));
361 memcpy (&(*decoded_options
)[*decoded_options_count
- 1], option
,
362 sizeof (struct cl_decoded_option
));
365 /* Try to merge and complain about options FDECODED_OPTIONS when applied
366 ontop of DECODED_OPTIONS. */
369 merge_and_complain (struct cl_decoded_option
**decoded_options
,
370 unsigned int *decoded_options_count
,
371 struct cl_decoded_option
*fdecoded_options
,
372 unsigned int fdecoded_options_count
)
376 /* ??? Merge options from files. Most cases can be
377 handled by either unioning or intersecting
378 (for example -fwrapv is a case for unioning,
379 -ffast-math is for intersection). Most complaints
380 about real conflicts between different options can
381 be deferred to the compiler proper. Options that
382 we can neither safely handle by intersection nor
383 unioning would need to be complained about here.
384 Ideally we'd have a flag in the opt files that
385 tells whether to union or intersect or reject.
386 In absence of that it's unclear what a good default is.
387 It's also difficult to get positional handling correct. */
389 /* The following does what the old LTO option code did,
390 union all target and a selected set of common options. */
391 for (i
= 0; i
< fdecoded_options_count
; ++i
)
393 struct cl_decoded_option
*foption
= &fdecoded_options
[i
];
394 switch (foption
->opt_index
)
396 case OPT_SPECIAL_unknown
:
397 case OPT_SPECIAL_ignore
:
398 case OPT_SPECIAL_program_name
:
399 case OPT_SPECIAL_input_file
:
403 if (!(cl_options
[foption
->opt_index
].flags
& CL_TARGET
))
411 case OPT_fexceptions
:
412 case OPT_fnon_call_exceptions
:
414 /* Do what the old LTO code did - collect exactly one option
415 setting per OPT code, we pick the first we encounter.
416 ??? This doesn't make too much sense, but when it doesn't
417 then we should complain. */
418 for (j
= 0; j
< *decoded_options_count
; ++j
)
419 if ((*decoded_options
)[j
].opt_index
== foption
->opt_index
)
421 if (j
== *decoded_options_count
)
422 append_option (decoded_options
, decoded_options_count
, foption
);
425 case OPT_ffp_contract_
:
426 /* For selected options we can merge conservatively. */
427 for (j
= 0; j
< *decoded_options_count
; ++j
)
428 if ((*decoded_options
)[j
].opt_index
== foption
->opt_index
)
430 if (j
== *decoded_options_count
)
431 append_option (decoded_options
, decoded_options_count
, foption
);
432 /* FP_CONTRACT_OFF < FP_CONTRACT_ON < FP_CONTRACT_FAST. */
433 else if (foption
->value
< (*decoded_options
)[j
].value
)
434 (*decoded_options
)[j
] = *foption
;
437 case OPT_freg_struct_return
:
438 case OPT_fpcc_struct_return
:
439 for (j
= 0; j
< *decoded_options_count
; ++j
)
440 if ((*decoded_options
)[j
].opt_index
== foption
->opt_index
)
442 if (j
== *decoded_options_count
)
443 fatal ("Option %s not used consistently in all LTO input files",
444 foption
->orig_option_with_args_text
);
450 /* Execute gcc. ARGC is the number of arguments. ARGV contains the arguments. */
453 run_gcc (unsigned argc
, char *argv
[])
456 const char **new_argv
;
457 const char **argv_ptr
;
458 char *list_option_full
= NULL
;
459 const char *linker_output
= NULL
;
460 const char *collect_gcc
, *collect_gcc_options
;
463 bool no_partition
= false;
464 struct cl_decoded_option
*fdecoded_options
= NULL
;
465 unsigned int fdecoded_options_count
= 0;
466 struct cl_decoded_option
*decoded_options
;
467 unsigned int decoded_options_count
;
468 struct obstack argv_obstack
;
471 /* Get the driver and options. */
472 collect_gcc
= getenv ("COLLECT_GCC");
474 fatal ("environment variable COLLECT_GCC must be set");
475 collect_gcc_options
= getenv ("COLLECT_GCC_OPTIONS");
476 if (!collect_gcc_options
)
477 fatal ("environment variable COLLECT_GCC_OPTIONS must be set");
478 get_options_from_collect_gcc_options (collect_gcc
, collect_gcc_options
,
481 &decoded_options_count
);
483 /* Look at saved options in the IL files. */
484 for (i
= 1; i
< argc
; ++i
)
491 off_t file_offset
= 0, offset
, length
;
493 simple_object_read
*sobj
;
495 struct cl_decoded_option
*f2decoded_options
;
496 unsigned int f2decoded_options_count
;
497 char *filename
= argv
[i
];
498 if ((p
= strrchr (argv
[i
], '@'))
500 && sscanf (p
, "@%li%n", &loffset
, &consumed
) >= 1
501 && strlen (p
) == (unsigned int) consumed
)
503 filename
= XNEWVEC (char, p
- argv
[i
] + 1);
504 memcpy (filename
, argv
[i
], p
- argv
[i
]);
505 filename
[p
- argv
[i
]] = '\0';
506 file_offset
= (off_t
) loffset
;
508 fd
= open (argv
[i
], O_RDONLY
);
511 sobj
= simple_object_start_read (fd
, file_offset
, "__GNU_LTO",
518 if (!simple_object_find_section (sobj
, LTO_SECTION_NAME_PREFIX
"." "opts",
519 &offset
, &length
, &errmsg
, &err
))
521 simple_object_release_read (sobj
);
525 lseek (fd
, file_offset
+ offset
, SEEK_SET
);
526 data
= (char *)xmalloc (length
);
527 read (fd
, data
, length
);
531 get_options_from_collect_gcc_options (collect_gcc
,
534 &f2decoded_options_count
);
535 if (!fdecoded_options
)
537 fdecoded_options
= f2decoded_options
;
538 fdecoded_options_count
= f2decoded_options_count
;
541 merge_and_complain (&fdecoded_options
,
542 &fdecoded_options_count
,
543 f2decoded_options
, f2decoded_options_count
);
545 fopts
+= strlen (fopts
) + 1;
547 while (fopts
- data
< length
);
550 simple_object_release_read (sobj
);
554 /* Initalize the common arguments for the driver. */
555 obstack_init (&argv_obstack
);
556 obstack_ptr_grow (&argv_obstack
, collect_gcc
);
557 obstack_ptr_grow (&argv_obstack
, "-xlto");
558 obstack_ptr_grow (&argv_obstack
, "-c");
560 /* Append compiler driver arguments as far as they were merged. */
561 for (j
= 1; j
< fdecoded_options_count
; ++j
)
563 struct cl_decoded_option
*option
= &fdecoded_options
[j
];
565 /* File options have been properly filtered by lto-opts.c. */
566 switch (option
->opt_index
)
568 /* Drop arguments that we want to take from the link line. */
571 case OPT_flto_partition_none
:
572 case OPT_flto_partition_1to1
:
573 case OPT_flto_partition_balanced
:
580 /* For now do what the original LTO option code was doing - pass
581 on any CL_TARGET flag and a few selected others. */
582 switch (option
->opt_index
)
588 case OPT_fexceptions
:
589 case OPT_fnon_call_exceptions
:
591 case OPT_freg_struct_return
:
592 case OPT_fpcc_struct_return
:
593 case OPT_ffp_contract_
:
597 if (!(cl_options
[option
->opt_index
].flags
& CL_TARGET
))
601 /* Pass the option on. */
602 for (i
= 0; i
< option
->canonical_option_num_elements
; ++i
)
603 obstack_ptr_grow (&argv_obstack
, option
->canonical_option
[i
]);
606 /* Append linker driver arguments. Compiler options from the linker
607 driver arguments will override / merge with those from the compiler. */
608 for (j
= 1; j
< decoded_options_count
; ++j
)
610 struct cl_decoded_option
*option
= &decoded_options
[j
];
612 /* Do not pass on frontend specific flags not suitable for lto. */
613 if (!(cl_options
[option
->opt_index
].flags
614 & (CL_COMMON
|CL_TARGET
|CL_DRIVER
|CL_LTO
)))
617 switch (option
->opt_index
)
620 linker_output
= option
->arg
;
621 /* We generate new intermediate output, drop this arg. */
632 case OPT_flto_partition_none
:
637 if (strcmp (option
->arg
, "jobserver") == 0)
644 parallel
= atoi (option
->arg
);
651 lto_mode
= LTO_MODE_WHOPR
;
652 /* We've handled these LTO options, do not pass them on. */
655 case OPT_freg_struct_return
:
656 case OPT_fpcc_struct_return
:
657 /* Ignore these, they are determined by the input files.
658 ??? We fail to diagnose a possible mismatch here. */
665 /* Pass the option on. */
666 for (i
= 0; i
< option
->canonical_option_num_elements
; ++i
)
667 obstack_ptr_grow (&argv_obstack
, option
->canonical_option
[i
]);
672 lto_mode
= LTO_MODE_LTO
;
679 char *output_dir
, *base
, *name
;
680 bool bit_bucket
= strcmp (linker_output
, HOST_BIT_BUCKET
) == 0;
682 output_dir
= xstrdup (linker_output
);
684 for (name
= base
; *name
; name
++)
685 if (IS_DIR_SEPARATOR (*name
))
689 linker_output
= &linker_output
[base
- output_dir
];
690 if (*output_dir
== '\0')
692 static char current_dir
[] = { '.', DIR_SEPARATOR
, '\0' };
693 output_dir
= current_dir
;
697 obstack_ptr_grow (&argv_obstack
, "-dumpdir");
698 obstack_ptr_grow (&argv_obstack
, output_dir
);
701 obstack_ptr_grow (&argv_obstack
, "-dumpbase");
704 /* Remember at which point we can scrub args to re-use the commons. */
705 new_head_argc
= obstack_object_size (&argv_obstack
) / sizeof (void *);
707 if (lto_mode
== LTO_MODE_LTO
)
709 flto_out
= make_temp_file (".lto.o");
711 obstack_ptr_grow (&argv_obstack
, linker_output
);
712 obstack_ptr_grow (&argv_obstack
, "-o");
713 obstack_ptr_grow (&argv_obstack
, flto_out
);
717 const char *list_option
= "-fltrans-output-list=";
718 size_t list_option_len
= strlen (list_option
);
723 char *dumpbase
= (char *) xmalloc (strlen (linker_output
)
724 + sizeof (".wpa") + 1);
725 strcpy (dumpbase
, linker_output
);
726 strcat (dumpbase
, ".wpa");
727 obstack_ptr_grow (&argv_obstack
, dumpbase
);
730 if (linker_output
&& debug
)
732 ltrans_output_file
= (char *) xmalloc (strlen (linker_output
)
733 + sizeof (".ltrans.out") + 1);
734 strcpy (ltrans_output_file
, linker_output
);
735 strcat (ltrans_output_file
, ".ltrans.out");
738 ltrans_output_file
= make_temp_file (".ltrans.out");
739 list_option_full
= (char *) xmalloc (sizeof (char) *
740 (strlen (ltrans_output_file
) + list_option_len
+ 1));
741 tmp
= list_option_full
;
743 obstack_ptr_grow (&argv_obstack
, tmp
);
744 strcpy (tmp
, list_option
);
745 tmp
+= list_option_len
;
746 strcpy (tmp
, ltrans_output_file
);
748 obstack_ptr_grow (&argv_obstack
, "-fwpa");
751 /* Append the input objects and possible preceding arguments. */
752 for (i
= 1; i
< argc
; ++i
)
753 obstack_ptr_grow (&argv_obstack
, argv
[i
]);
754 obstack_ptr_grow (&argv_obstack
, NULL
);
756 new_argv
= XOBFINISH (&argv_obstack
, const char **);
757 argv_ptr
= &new_argv
[new_head_argc
];
758 fork_execute (CONST_CAST (char **, new_argv
));
760 if (lto_mode
== LTO_MODE_LTO
)
762 printf ("%s\n", flto_out
);
768 FILE *stream
= fopen (ltrans_output_file
, "r");
769 FILE *mstream
= NULL
;
770 struct obstack env_obstack
;
773 fatal_perror ("fopen: %s", ltrans_output_file
);
775 /* Parse the list of LTRANS inputs from the WPA stage. */
776 obstack_init (&env_obstack
);
780 const unsigned piece
= 32;
781 char *output_name
= NULL
;
782 char *buf
, *input_name
= (char *)xmalloc (piece
);
787 if (!fgets (buf
, piece
, stream
))
789 len
= strlen (input_name
);
790 if (input_name
[len
- 1] != '\n')
792 input_name
= (char *)xrealloc (input_name
, len
+ piece
);
793 buf
= input_name
+ len
;
796 input_name
[len
- 1] = '\0';
798 if (input_name
[0] == '*')
799 output_name
= &input_name
[1];
802 input_names
= (char **)xrealloc (input_names
, nr
* sizeof (char *));
803 output_names
= (char **)xrealloc (output_names
, nr
* sizeof (char *));
804 input_names
[nr
-1] = input_name
;
805 output_names
[nr
-1] = output_name
;
808 maybe_unlink_file (ltrans_output_file
);
809 ltrans_output_file
= NULL
;
813 makefile
= make_temp_file (".mk");
814 mstream
= fopen (makefile
, "w");
817 /* Execute the LTRANS stage for each input file (or prepare a
818 makefile to invoke this in parallel). */
819 for (i
= 0; i
< nr
; ++i
)
822 char *input_name
= input_names
[i
];
823 /* If it's a pass-through file do nothing. */
827 /* Replace the .o suffix with a .ltrans.o suffix and write
828 the resulting name to the LTRANS output list. */
829 obstack_grow (&env_obstack
, input_name
, strlen (input_name
) - 2);
830 obstack_grow (&env_obstack
, ".ltrans.o", sizeof (".ltrans.o"));
831 output_name
= XOBFINISH (&env_obstack
, char *);
833 /* Adjust the dumpbase if the linker output file was seen. */
837 = (char *) xmalloc (strlen (linker_output
)
838 + sizeof (DUMPBASE_SUFFIX
) + 1);
840 strlen (linker_output
) + sizeof (DUMPBASE_SUFFIX
),
841 "%s.ltrans%u", linker_output
, i
);
842 argv_ptr
[0] = dumpbase
;
845 argv_ptr
[1] = "-fltrans";
847 argv_ptr
[3] = output_name
;
848 argv_ptr
[4] = input_name
;
852 fprintf (mstream
, "%s:\n\t@%s ", output_name
, new_argv
[0]);
853 for (j
= 1; new_argv
[j
] != NULL
; ++j
)
854 fprintf (mstream
, " '%s'", new_argv
[j
]);
855 fprintf (mstream
, "\n");
856 /* If we are not preserving the ltrans input files then
857 truncate them as soon as we have processed it. This
858 reduces temporary disk-space usage. */
860 fprintf (mstream
, "\t@-touch -r %s %s.tem > /dev/null 2>&1 "
862 input_name
, input_name
, input_name
, input_name
);
866 fork_execute (CONST_CAST (char **, new_argv
));
867 maybe_unlink_file (input_name
);
870 output_names
[i
] = output_name
;
877 fprintf (mstream
, "all:");
878 for (i
= 0; i
< nr
; ++i
)
879 fprintf (mstream
, " \\\n\t%s", output_names
[i
]);
880 fprintf (mstream
, "\n");
884 /* Avoid passing --jobserver-fd= and similar flags
885 unless jobserver mode is explicitly enabled. */
886 putenv (xstrdup ("MAKEFLAGS="));
887 putenv (xstrdup ("MFLAGS="));
889 new_argv
[0] = getenv ("MAKE");
891 new_argv
[0] = "make";
893 new_argv
[2] = makefile
;
897 snprintf (jobs
, 31, "-j%d", parallel
);
898 new_argv
[i
++] = jobs
;
900 new_argv
[i
++] = "all";
901 new_argv
[i
++] = NULL
;
902 pex
= collect_execute (CONST_CAST (char **, new_argv
));
903 collect_wait (new_argv
[0], pex
);
904 maybe_unlink_file (makefile
);
906 for (i
= 0; i
< nr
; ++i
)
907 maybe_unlink_file (input_names
[i
]);
909 for (i
= 0; i
< nr
; ++i
)
911 fputs (output_names
[i
], stdout
);
913 free (input_names
[i
]);
918 free (list_option_full
);
919 obstack_free (&env_obstack
, NULL
);
922 obstack_free (&argv_obstack
, NULL
);
929 main (int argc
, char *argv
[])
933 gcc_obstack_init (&opts_obstack
);
935 p
= argv
[0] + strlen (argv
[0]);
936 while (p
!= argv
[0] && !IS_DIR_SEPARATOR (p
[-1]))
940 xmalloc_set_program_name (progname
);
944 diagnostic_initialize (global_dc
, 0);
946 if (signal (SIGINT
, SIG_IGN
) != SIG_IGN
)
947 signal (SIGINT
, fatal_signal
);
949 if (signal (SIGHUP
, SIG_IGN
) != SIG_IGN
)
950 signal (SIGHUP
, fatal_signal
);
952 if (signal (SIGTERM
, SIG_IGN
) != SIG_IGN
)
953 signal (SIGTERM
, fatal_signal
);
955 if (signal (SIGPIPE
, SIG_IGN
) != SIG_IGN
)
956 signal (SIGPIPE
, fatal_signal
);
959 /* We *MUST* set SIGCHLD to SIG_DFL so that the wait4() call will
960 receive the signal. A different setting is inheritable */
961 signal (SIGCHLD
, SIG_DFL
);
964 /* We may be called with all the arguments stored in some file and
965 passed with @file. Expand them into argv before processing. */
966 expandargv (&argc
, &argv
);
968 run_gcc (argc
, argv
);