1 /* $NetBSD: cdefs.h,v 1.18 1997/06/18 19:09:50 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. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the University of 21 * California, Berkeley and its contributors. 22 * 4. Neither the name of the University nor the names of its contributors 23 * may be used to endorse or promote products derived from this software 24 * without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 29 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 36 * SUCH DAMAGE. 37 * 38 * @(#)cdefs.h 8.7 (Berkeley) 1/21/94 39 */ 40 41 #ifndef _SYS_CDEFS_H_ 42 43 #if defined(NEED_HOST_CDEFS_H) 44 /* 45 * make sure we don't come past here again. 46 */ 47 #undef NEED_HOST_CDEFS_H 48 /* 49 * Some systems - notably linux, have sys/cdefs.h 50 * which is not really compatible with our's. 51 */ 52 #ifdef __GNUC__ 53 # include_next <sys/cdefs.h> 54 #else 55 /* 56 * It sucks that we have to hard code a path like this. 57 * But systems that have a sys/cdefs.h that don't use gcc 58 * should be few. 59 */ 60 # include "/usr/include/sys/cdefs.h" 61 #endif 62 /* 63 * We are about to [re]define these 64 */ 65 #undef __P 66 #undef _SYS_CDEFS_H_ 67 #endif 68 69 #define _SYS_CDEFS_H_ 70 71 #ifdef NetBSD 72 #include <machine/cdefs.h> 73 #endif 74 75 #if defined(__cplusplus) 76 # ifndef __BEGIN_DECLS 77 # define __BEGIN_DECLS extern "C" { 78 # endif 79 # ifndef __END_DECLS 80 # define __END_DECLS }; 81 # endif 82 #else 83 # ifndef __BEGIN_DECLS 84 # define __BEGIN_DECLS 85 # endif 86 # ifndef __END_DECLS 87 # define __END_DECLS 88 # endif 89 #endif 90 91 /* 92 * The __CONCAT macro is used to concatenate parts of symbol names, e.g. 93 * with "#define OLD(foo) __CONCAT(old,foo)", OLD(foo) produces oldfoo. 94 * The __CONCAT macro is a bit tricky -- make sure you don't put spaces 95 * in between its arguments. __CONCAT can also concatenate double-quoted 96 * strings produced by the __STRING macro, but this only works with ANSI C. 97 */ 98 #if defined(__STDC__) || defined(__cplusplus) 99 #define __P(protos) protos /* full-blown ANSI C */ 100 #ifndef __CONCAT 101 #define __CONCAT(x,y) x ## y 102 #endif 103 #define __STRING(x) #x 104 105 #define __const const /* define reserved names to standard */ 106 #define __signed signed 107 #define __volatile volatile 108 #if defined(__cplusplus) 109 #define __inline inline /* convert to C++ keyword */ 110 #else 111 #ifndef __GNUC__ 112 #define __inline /* delete GCC keyword */ 113 #endif /* !__GNUC__ */ 114 #endif /* !__cplusplus */ 115 116 #else /* !(__STDC__ || __cplusplus) */ 117 #define __P(protos) () /* traditional C preprocessor */ 118 #define __CONCAT(x,y) x/**/y 119 #define __STRING(x) "x" 120 121 #ifndef __GNUC__ 122 #define __const /* delete pseudo-ANSI C keywords */ 123 #define __inline 124 #define __signed 125 #define __volatile 126 #endif /* !__GNUC__ */ 127 128 /* 129 * In non-ANSI C environments, new programs will want ANSI-only C keywords 130 * deleted from the program and old programs will want them left alone. 131 * Programs using the ANSI C keywords const, inline etc. as normal 132 * identifiers should define -DNO_ANSI_KEYWORDS. 133 */ 134 #ifndef NO_ANSI_KEYWORDS 135 #define const __const /* convert ANSI C keywords */ 136 #define inline __inline 137 #define signed __signed 138 #define volatile __volatile 139 #endif /* !NO_ANSI_KEYWORDS */ 140 #endif /* !(__STDC__ || __cplusplus) */ 141 142 /* 143 * GCC1 and some versions of GCC2 declare dead (non-returning) and 144 * pure (no side effects) functions using "volatile" and "const"; 145 * unfortunately, these then cause warnings under "-ansi -pedantic". 146 * GCC2 uses a new, peculiar __attribute__((attrs)) style. All of 147 * these work for GNU C++ (modulo a slight glitch in the C++ grammar 148 * in the distribution version of 2.5.5). 149 */ 150 #if !defined(__GNUC__) || __GNUC__ < 2 || \ 151 (__GNUC__ == 2 && __GNUC_MINOR__ < 5) 152 #define __attribute__(x) /* delete __attribute__ if non-gcc or gcc1 */ 153 #if defined(__GNUC__) && !defined(__STRICT_ANSI__) 154 #define __dead __volatile 155 #define __pure __const 156 #endif 157 #endif 158 159 #ifdef sun386 160 # define __attribute__(x) 161 #endif 162 163 #ifdef __KPRINTF_ATTRIBUTE__ 164 #define __kprintf_attribute__(a) __attribute__(a) 165 #else 166 #define __kprintf_attribute__(a) 167 #endif 168 169 /* Delete pseudo-keywords wherever they are not available or needed. */ 170 #ifndef __dead 171 #define __dead 172 #define __pure 173 #endif 174 175 #define __IDSTRING(name,string) \ 176 static const char name[] __attribute__((__unused__)) = string 177 178 #ifndef __RCSID 179 #define __RCSID(s) __IDSTRING(rcsid,s) 180 #endif 181 182 #ifndef __COPYRIGHT 183 #define __COPYRIGHT(s) __IDSTRING(copyright,s) 184 #endif 185 186 #endif /* !_SYS_CDEFS_H_ */ 187