1/* $NetBSD$ */ 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 _CDEFS_H_ 42#define _CDEFS_H_ 43 44/* POSIX.2 feature test macro: enable POSIX.1 and/or more */ 45#if _POSIX_C_SOURCE == 1 || _POSIX_C_SOURCE == 2 46#define _POSIX_SOURCE 47#endif 48 49#if defined(_POSIX_SOURCE) || defined(__STRICT_ANSI__) 50#define _ANSI_SOURCE 51#endif 52 53#if defined(__cplusplus) 54#define __BEGIN_DECLS extern "C" { 55#define __END_DECLS }; 56#else 57#define __BEGIN_DECLS 58#define __END_DECLS 59#endif 60 61/* 62 * The __CONCAT macro is used to concatenate parts of symbol names, e.g. 63 * with "#define OLD(foo) __CONCAT(old,foo)", OLD(foo) produces oldfoo. 64 * The __CONCAT macro is a bit tricky -- make sure you don't put spaces 65 * in between its arguments. __CONCAT can also concatenate double-quoted 66 * strings produced by the __STRING macro, but this only works with ANSI C. 67 */ 68#if defined(__STDC__) || defined(__cplusplus) 69#define __P(protos) protos /* full-blown ANSI C */ 70#define __CONCAT(x,y) x ## y 71#define __STRING(x) #x 72 73#define __const const /* define reserved names to standard */ 74#define __signed signed 75#define __volatile volatile 76#if defined(__cplusplus) 77#define __inline inline /* convert to C++ keyword */ 78#else 79#ifndef __GNUC__ 80#define __inline /* delete GCC keyword */ 81#endif /* !__GNUC__ */ 82#endif /* !__cplusplus */ 83 84#else /* !(__STDC__ || __cplusplus) */ 85#define __P(protos) () /* traditional C preprocessor */ 86#define __CONCAT(x,y) x/**/y 87#define __STRING(x) "x" 88 89#ifndef __GNUC__ 90#define __const /* delete pseudo-ANSI C keywords */ 91#define __inline 92#define __signed 93#define __volatile 94/* 95 * In non-ANSI C environments, new programs will want ANSI-only C keywords 96 * deleted from the program and old programs will want them left alone. 97 * When using a compiler other than gcc, programs using the ANSI C keywords 98 * const, inline etc. as normal identifiers should define -DNO_ANSI_KEYWORDS. 99 * When using "gcc -traditional", we assume that this is the intent; if 100 * __GNUC__ is defined but __STDC__ is not, we leave the new keywords alone. 101 */ 102#ifndef NO_ANSI_KEYWORDS 103#define const /* delete ANSI C keywords */ 104#define inline 105#define signed 106#define volatile 107#endif 108#endif /* !__GNUC__ */ 109#endif /* !(__STDC__ || __cplusplus) */ 110 111/* 112 * GCC1 and some versions of GCC2 declare dead (non-returning) and 113 * pure (no side effects) functions using "volatile" and "const"; 114 * unfortunately, these then cause warnings under "-ansi -pedantic". 115 * GCC2 uses a new, peculiar __attribute__((attrs)) style. All of 116 * these work for GNU C++ (modulo a slight glitch in the C++ grammar 117 * in the distribution version of 2.5.5). 118 */ 119#if !defined(__GNUC__) || __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 5) 120#define __attribute__(x) /* delete __attribute__ if non-gcc or gcc1 */ 121#if defined(__GNUC__) && !defined(__STRICT_ANSI__) 122#define __dead __volatile 123#define __pure __const 124#endif 125#endif 126/* The following lines were added for newer versions of GNU C 127 * Ed Lewis - Sept 1996 lewis@tis.com 128 */ 129#if __GNUC__ == 2 && __GNUC_MINOR__ >= 5 || __GNUC__ >= 3 130#define __dead 131#define __dead2 __attribute__((noreturn)) 132#define __pure 133#define __pure2 __attribute__((const)) 134#endif 135 136 137/* Delete pseudo-keywords wherever they are not available or needed. */ 138#ifndef __dead 139#define __dead 140#define __pure 141#endif 142 143#endif /* !_CDEFS_H_ */ 144