1 /* 2 * Copyright (c) 1991, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * Berkeley Software Design, Inc. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by the University of 19 * California, Berkeley and its contributors. 20 * 4. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 * 36 * @(#)cdefs.h 8.7 (Berkeley) 1/21/94 37 */ 38 39 #ifndef _CDEFS_H_ 40 #define _CDEFS_H_ 41 42 /* POSIX.2 feature test macro: enable POSIX.1 and/or more */ 43 #if _POSIX_C_SOURCE == 1 || _POSIX_C_SOURCE == 2 44 #define _POSIX_SOURCE 45 #endif 46 47 #if defined(_POSIX_SOURCE) || defined(__STRICT_ANSI__) 48 #define _ANSI_SOURCE 49 #endif 50 51 #if defined(__cplusplus) 52 #define __BEGIN_DECLS extern "C" { 53 #define __END_DECLS }; 54 #else 55 #define __BEGIN_DECLS 56 #define __END_DECLS 57 #endif 58 59 /* 60 * The __CONCAT macro is used to concatenate parts of symbol names, e.g. 61 * with "#define OLD(foo) __CONCAT(old,foo)", OLD(foo) produces oldfoo. 62 * The __CONCAT macro is a bit tricky -- make sure you don't put spaces 63 * in between its arguments. __CONCAT can also concatenate double-quoted 64 * strings produced by the __STRING macro, but this only works with ANSI C. 65 */ 66 #if defined(__STDC__) || defined(__cplusplus) 67 #define __P(protos) protos /* full-blown ANSI C */ 68 #define __CONCAT(x,y) x ## y 69 #define __STRING(x) #x 70 71 #define __const const /* define reserved names to standard */ 72 #define __signed signed 73 #define __volatile volatile 74 #if defined(__cplusplus) 75 #define __inline inline /* convert to C++ keyword */ 76 #else 77 #ifndef __GNUC__ 78 #define __inline /* delete GCC keyword */ 79 #endif /* !__GNUC__ */ 80 #endif /* !__cplusplus */ 81 82 #else /* !(__STDC__ || __cplusplus) */ 83 #define __P(protos) () /* traditional C preprocessor */ 84 #define __CONCAT(x,y) x/**/y 85 #define __STRING(x) "x" 86 87 #ifndef __GNUC__ 88 #define __const /* delete pseudo-ANSI C keywords */ 89 #define __inline 90 #define __signed 91 #define __volatile 92 /* 93 * In non-ANSI C environments, new programs will want ANSI-only C keywords 94 * deleted from the program and old programs will want them left alone. 95 * When using a compiler other than gcc, programs using the ANSI C keywords 96 * const, inline etc. as normal identifiers should define -DNO_ANSI_KEYWORDS. 97 * When using "gcc -traditional", we assume that this is the intent; if 98 * __GNUC__ is defined but __STDC__ is not, we leave the new keywords alone. 99 */ 100 #ifndef NO_ANSI_KEYWORDS 101 #define const /* delete ANSI C keywords */ 102 #define inline 103 #define signed 104 #define volatile 105 #endif 106 #endif /* !__GNUC__ */ 107 #endif /* !(__STDC__ || __cplusplus) */ 108 109 /* 110 * GCC1 and some versions of GCC2 declare dead (non-returning) and 111 * pure (no side effects) functions using "volatile" and "const"; 112 * unfortunately, these then cause warnings under "-ansi -pedantic". 113 * GCC2 uses a new, peculiar __attribute__((attrs)) style. All of 114 * these work for GNU C++ (modulo a slight glitch in the C++ grammar 115 * in the distribution version of 2.5.5). 116 */ 117 #if !defined(__GNUC__) || __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 5) 118 #define __attribute__(x) /* delete __attribute__ if non-gcc or gcc1 */ 119 #if defined(__GNUC__) && !defined(__STRICT_ANSI__) 120 #define __dead __volatile 121 #define __pure __const 122 #endif 123 #endif 124 /* The following lines were added for newer versions of GNU C 125 * Ed Lewis - Sept 1996 lewis@tis.com 126 */ 127 #if __GNUC__ == 2 && __GNUC_MINOR__ >= 5 || __GNUC__ >= 3 128 #define __dead 129 #define __dead2 __attribute__((noreturn)) 130 #define __pure 131 #define __pure2 __attribute__((const)) 132 #endif 133 134 135 /* Delete pseudo-keywords wherever they are not available or needed. */ 136 #ifndef __dead 137 #define __dead 138 #define __pure 139 #endif 140 141 #endif /* !_CDEFS_H_ */ 142