1 /* $NetBSD: cdefs.h,v 1.58 2004/12/11 05:59:00 christos Exp $ */ 2 3 /* 4 * Copyright (c) 1991, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * Berkeley Software Design, Inc. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 * 34 * @(#)cdefs.h 8.8 (Berkeley) 1/9/95 35 */ 36 37 /* 38 * This is a minimum version of cdefs.h for LK, this might be 39 * modified if necessary 40 */ 41 #ifndef _SYS_CDEFS_H_ 42 #define _SYS_CDEFS_H_ 43 44 /*- 45 * Deal with _ANSI_SOURCE: 46 * If it is defined, and no other compilation environment is explicitly 47 * requested, then define our internal feature-test macros to zero. This 48 * makes no difference to the preprocessor (undefined symbols in preprocessing 49 * expressions are defined to have value zero), but makes it more convenient for 50 * a test program to print out the values. 51 * 52 * If a program mistakenly defines _ANSI_SOURCE and some other macro such as 53 * _POSIX_C_SOURCE, we will assume that it wants the broader compilation 54 * environment (and in fact we will never get here). 55 */ 56 #if defined(_ANSI_SOURCE) /* Hide almost everything. */ 57 #define __POSIX_VISIBLE 0 58 #define __XSI_VISIBLE 0 59 #define __BSD_VISIBLE 0 60 #define __ISO_C_VISIBLE 1990 61 #elif defined(_C99_SOURCE) /* Localism to specify strict C99 env. */ 62 #define __POSIX_VISIBLE 0 63 #define __XSI_VISIBLE 0 64 #define __BSD_VISIBLE 0 65 #define __ISO_C_VISIBLE 1999 66 #else /* Default environment: show everything. */ 67 #define __POSIX_VISIBLE 200809 68 #define __XSI_VISIBLE 700 69 #define __BSD_VISIBLE 1 70 #define __ISO_C_VISIBLE 1999 71 #endif 72 73 /* 74 * Default values. 75 */ 76 #ifndef __XPG_VISIBLE 77 # define __XPG_VISIBLE 700 78 #endif 79 #ifndef __POSIX_VISIBLE 80 # define __POSIX_VISIBLE 200809 81 #endif 82 #ifndef __ISO_C_VISIBLE 83 # define __ISO_C_VISIBLE 1999 84 #endif 85 #ifndef __BSD_VISIBLE 86 # define __BSD_VISIBLE 1 87 #endif 88 89 90 /* 91 * Some of the FreeBSD sources used in Bionic need this. 92 * Originally, this is used to embed the rcs versions of each source file 93 * in the generated binary. We certainly don't want this in Bionic. 94 */ 95 #define __FBSDID(s) /* nothing */ 96 97 #define __pure2 __attribute__((__const__)) /* Android-added: used by FreeBSD libm */ 98 99 /* 100 * Macro to test if we're using a GNU C compiler of a specific vintage 101 * or later, for e.g. features that appeared in a particular version 102 * of GNU C. Usage: 103 * 104 * #if __GNUC_PREREQ__(major, minor) 105 * ...cool feature... 106 * #else 107 * ...delete feature... 108 * #endif 109 */ 110 #ifdef __GNUC__ 111 #define __GNUC_PREREQ__(x, y) \ 112 ((__GNUC__ == (x) && __GNUC_MINOR__ >= (y)) || \ 113 (__GNUC__ > (x))) 114 #else 115 #define __GNUC_PREREQ__(x, y) 0 116 #endif 117 118 #if defined(__cplusplus) 119 #define __BEGIN_DECLS extern "C" { 120 #define __END_DECLS } 121 #define __static_cast(x,y) static_cast<x>(y) 122 #else 123 #define __BEGIN_DECLS 124 #define __END_DECLS 125 #define __static_cast(x,y) (x)y 126 #endif 127 128 #if defined(__cplusplus) 129 #define __inline inline /* convert to C++ keyword */ 130 #else 131 #if !defined(__GNUC__) && !defined(__lint__) 132 #define __inline /* delete GCC keyword */ 133 #endif /* !__GNUC__ && !__lint__ */ 134 #endif /* !__cplusplus */ 135 136 #if __GNUC_PREREQ__(3, 1) 137 #define __always_inline __attribute__((__always_inline__)) 138 #else 139 #define __always_inline 140 #endif 141 142 143 144 #endif /* !_SYS_CDEFS_H_ */ 145