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 8.8 (Berkeley) 1/9/95 37 * $FreeBSD: /repoman/r/ncvs/src/sys/sys/cdefs.h,v 1.68 2002/10/21 20:50:30 mike Exp $ 38 */ 39 40#ifndef _SYS_CDEFS_H_ 41 42/* 43 * Compiler-dependent macros to help declare dead (non-returning) and 44 * pure (no side effects) functions, and unused variables. They are 45 * null except for versions of gcc that are known to support the features 46 * properly (old versions of gcc-2 supported the dead and pure features 47 * in a different (wrong) way). If we do not provide an implementation 48 * for a given compiler, let the compile fail if it is told to use 49 * a feature that we cannot live without. 50 */ 51#ifdef lint 52#define __packed 53#define __aligned(x) 54#define __section(x) 55#else 56#define __packed __attribute__((__packed__)) 57#define __aligned(x) __attribute__((__aligned__(x))) 58#define __section(x) __attribute__((__section__(x))) 59#endif 60 61#if !defined(__STRICT_ANSI__) || __STDC_VERSION__ >= 199901 62#define __LONG_LONG_SUPPORTED 63#endif 64 65/* 66 * We define this here since <stddef.h>, <sys/queue.h>, and <sys/types.h> 67 * require it. 68 */ 69#define __strong_reference(sym,aliassym) \ 70 extern __typeof (sym) aliassym __attribute__ ((__alias__ (#sym))); 71#define __weak_reference(sym,alias) 72#define __warn_references(sym,msg) 73 74#ifndef __RCSID_SOURCE 75#ifndef NO__RCSID_SOURCE 76#define __RCSID_SOURCE(s) __IDSTRING(__CONCAT(__rcsid_source_,__LINE__),s) 77#else 78#define __RCSID_SOURCE(s) 79#endif 80#endif 81 82#ifndef __DECONST 83#define __DECONST(type, var) ((type)(uintptr_t)(const void *)(var)) 84#endif 85 86#ifndef __DEVOLATILE 87#define __DEVOLATILE(type, var) ((type)(uintptr_t)(volatile void *)(var)) 88#endif 89 90#ifndef __DEQUALIFY 91#define __DEQUALIFY(type, var) ((type)(uintptr_t)(const volatile void *)(var)) 92#endif 93 94/* 95 * Now include the Apple version of sys/cdefs.h 96 */ 97 98#include_next <sys/cdefs.h> 99 100/* 101 * Use FreeBSD version of __CONCAT 102 */ 103#if defined(__STDC__) || defined(__cplusplus) 104#undef __CONCAT1 105#undef __CONCAT 106#define __CONCAT1(x,y) x ## y 107#define __CONCAT(x,y) __CONCAT1(x,y) 108#endif 109 110/* 111 * Deal with all versions of POSIX. The ordering relative to the tests above is 112 * important. 113 */ 114#ifdef _POSIX_C_SOURCE 115#if _POSIX_C_SOURCE >= 200112 116#define __POSIX_VISIBLE 200112 117#define __ISO_C_VISIBLE 1999 118#elif _POSIX_C_SOURCE >= 199506 119#define __POSIX_VISIBLE 199506 120#define __ISO_C_VISIBLE 1990 121#elif _POSIX_C_SOURCE >= 199309 122#define __POSIX_VISIBLE 199309 123#define __ISO_C_VISIBLE 1990 124#elif _POSIX_C_SOURCE >= 199209 125#define __POSIX_VISIBLE 199209 126#define __ISO_C_VISIBLE 1990 127#elif _POSIX_C_SOURCE >= 199009 128#define __POSIX_VISIBLE 199009 129#define __ISO_C_VISIBLE 1990 130#else 131#define __POSIX_VISIBLE 198808 132#define __ISO_C_VISIBLE 0 133#endif /* _POSIX_C_SOURCE */ 134#else 135/*- 136 * Deal with _ANSI_SOURCE: 137 * If it is defined, and no other compilation environment is explicitly 138 * requested, then define our internal feature-test macros to zero. This 139 * makes no difference to the preprocessor (undefined symbols in preprocessing 140 * expressions are defined to have value zero), but makes it more convenient for 141 * a test program to print out the values. 142 * 143 * If a program mistakenly defines _ANSI_SOURCE and some other macro such as 144 * _POSIX_C_SOURCE, we will assume that it wants the broader compilation 145 * environment (and in fact we will never get here). 146 */ 147#if defined(_ANSI_SOURCE) /* Hide almost everything. */ 148#define __POSIX_VISIBLE 0 149#define __XSI_VISIBLE 0 150#define __BSD_VISIBLE 0 151#define __ISO_C_VISIBLE 1990 152#elif defined(_C99_SOURCE) /* Localism to specify strict C99 env. */ 153#define __POSIX_VISIBLE 0 154#define __XSI_VISIBLE 0 155#define __BSD_VISIBLE 0 156#define __ISO_C_VISIBLE 1999 157#else /* Default environment: show everything. */ 158#define __POSIX_VISIBLE 200112 159#define __XSI_VISIBLE 600 160#define __BSD_VISIBLE 1 161#define __ISO_C_VISIBLE 1999 162#endif 163#endif 164 165#endif /* !_SYS_CDEFS_H_ */ 166