1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
|
/* Copyright (C) 1992, 93, 94, 95, 96 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If
not, write to the Free Software Foundation, Inc., 675 Mass Ave,
Cambridge, MA 02139, USA. */
#ifndef _SYS_CDEFS_H
#define _SYS_CDEFS_H 1
#include <features.h>
/* Some user header file might have defined this before. */
#undef __P
#ifdef __GNUC__
#define __P(args) args /* GCC can always grok prototypes. */
#define __DOTS , ...
#else /* Not GCC. */
#define __inline /* No inline functions. */
#if (defined (__STDC__) && __STDC__) || defined (__cplusplus)
#define __P(args) args
#define __const const
#define __signed signed
#define __volatile volatile
#define __DOTS , ...
#else /* Not ANSI C or C++. */
#define __P(args) () /* No prototypes. */
#define __const /* No ANSI C keywords. */
#define __signed
#define __volatile
#define __DOTS
#endif /* ANSI C or C++. */
#endif /* GCC. */
/* For these things, GCC behaves the ANSI way normally,
and the non-ANSI way under -traditional. */
#if defined (__STDC__) && __STDC__
#define __CONCAT(x,y) x ## y
#define __STRING(x) #x
/* This is not a typedef so `const __ptr_t' does the right thing. */
#define __ptr_t void *
typedef long double __long_double_t;
#else
#define __CONCAT(x,y) x/**/y
#define __STRING(x) "x"
#define __ptr_t char *
typedef double __long_double_t;
/* The BSD header files use the ANSI keywords unmodified (this means that
old programs may lose if they use the new keywords as identifiers), but
those names are not available under -traditional. We define them to
their __ versions, which are taken care of above. */
#ifdef __USE_BSD
#define const __const
#define signed __signed
#define volatile __volatile
#endif
#endif /* __STDC__ */
/* C++ needs to know that types and declarations are C, not C++. */
#ifdef __cplusplus
#define __BEGIN_DECLS extern "C" {
#define __END_DECLS }
#else
#define __BEGIN_DECLS
#define __END_DECLS
#endif
/* GCC2 has various useful declarations that can be made with the
`__attribute__' syntax. All of the ways we use this do fine if
they are omitted for compilers that don't understand it. */
#if !defined (__GNUC__) || __GNUC__ < 2
#define __attribute__(xyz) /* Ignore. */
#endif
#endif /* sys/cdefs.h */
|
