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
|
#ifndef _SYS__POSIX_H_
#define _SYS__POSIX_H_
/*-
* Copyright (c) 1998 HD Associates, Inc.
* All rights reserved.
* contact: dufault@hda.com
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $Id: $
*/
/*
* This is a stand alone header file to set up for feature specification
* defined to take place before the inclusion of any standard header.
* It should only handle pre-processor defines.
*
* See section B.2.7 of 1003.1b-1993
*
*/
#ifndef _POSIX_VERSION
#define _POSIX_VERSION 199009L
#endif
/* Test for visibility of pre-existing POSIX.4 features that should really
* be conditional. If _POSIX_C_SOURCE and _POSIX_SOURCE are not
* defined then permit the pre-existing features to show up:
*/
#if !defined(_POSIX_SOURCE) && !defined(_POSIX_C_SOURCE)
#define _POSIX4_VISIBLE_HISTORICALLY
#endif
/* Test for visibility of additional POSIX.4 features:
*/
#if _POSIX_VERSION >= 199309L && \
(!defined(_POSIX_C_SOURCE) || _POSIX_C_SOURCE >= 199309L)
#define _POSIX4_VISIBLE
#define _POSIX4_VISIBLE_HISTORICALLY
#endif
/* I'm not sure if I'm allowed to do this, but at least initially
* it may catch some teething problems:
*/
#if defined(_POSIX_C_SOURCE) && (_POSIX_C_SOURCE > _POSIX_VERSION)
#error _POSIX_C_SOURCE > _POSIX_VERSION
#endif
#define POSIX4_VISIBLE You missed the leading _!!
#define POSIX4_VISIBLE_FORCEABLY You left the old define in the code!!
#endif /* _SYS__POSIX_H_ */
|