tsystem.h revision 117395 
1/* Get common system includes and various definitions and declarations
2   based on target macros.
3   Copyright (C) 2000, 2001 Free Software Foundation, Inc.
4
5This file is part of GCC.
6
7GCC is free software; you can redistribute it and/or modify it under
8the terms of the GNU General Public License as published by the Free
9Software Foundation; either version 2, or (at your option) any later
10version.
11
12GCC is distributed in the hope that it will be useful, but WITHOUT ANY
13WARRANTY; without even the implied warranty of MERCHANTABILITY or
14FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
15for more details.
16
17You should have received a copy of the GNU General Public License
18along with GCC; see the file COPYING.  If not, write to the Free
19Software Foundation, 59 Temple Place - Suite 330, Boston, MA
2002111-1307, USA.  */
21
22/* As a special exception, if you link this library with other files,
23   some of which are compiled with GCC, to produce an executable,
24   this library does not by itself cause the resulting executable
25   to be covered by the GNU General Public License.
26   This exception does not however invalidate any other reasons why
27   the executable file might be covered by the GNU General Public License.  */
28
29
30#ifndef GCC_TSYSTEM_H
31#define GCC_TSYSTEM_H
32
33/* System headers (e.g. stdio.h, stdlib.h, unistd.h) sometimes
34   indirectly include getopt.h.  Our -I flags will cause gcc's gnu
35   getopt.h to be included, not the platform's copy.  In the default
36   case, gnu getopt.h will provide us with a no-argument prototype
37   which will generate -Wstrict-prototypes warnings.  None of the
38   target files actually use getopt, so it is safe to tell gnu
39   getopt.h we never need this prototype.  */
40#ifndef HAVE_DECL_GETOPT
41#define HAVE_DECL_GETOPT 1
42#endif
43
44/* GCC supplies these headers.  */
45#include <stddef.h>
46#include <float.h>
47
48#ifdef inhibit_libc
49
50#ifndef malloc
51extern void *malloc (size_t);
52#endif
53
54#ifndef free
55extern void free (void *);
56#endif
57
58#ifndef atexit
59extern int atexit (void (*)(void));
60#endif
61
62#else /* ! inhibit_libc */
63/* We disable this when inhibit_libc, so that gcc can still be built without
64   needing header files first.  */
65/* ??? This is not a good solution, since prototypes may be required in
66   some cases for correct code.  */
67
68/* GCC supplies this header.  */
69#include <stdarg.h>
70
71/* All systems have this header.  */
72#include <stdio.h>
73
74/* All systems have this header.  */
75#include <sys/types.h>
76
77/* All systems have this header.  */
78#include <errno.h>
79
80#ifndef errno
81extern int errno;
82#endif
83
84#ifdef POSIX
85#include <string.h>
86#endif
87
88/* GCC (fixproto) guarantees these system headers exist.  */
89#include <stdlib.h>
90#include <unistd.h>
91
92/* GCC supplies this header.  */
93#include <limits.h>
94
95#ifdef POSIX
96#include <time.h>
97#endif
98
99#endif /* inhibit_libc */
100
101/* Define a generic NULL if one hasn't already been defined.  */
102#ifndef NULL
103#define NULL 0
104#endif
105
106#endif /* ! GCC_TSYSTEM_H */
107