1 /* 2 * Copyright (c) 2003-2012 Apple Inc. All rights reserved. 3 * 4 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ 5 * 6 * This file contains Original Code and/or Modifications of Original Code 7 * as defined in and that are subject to the Apple Public Source License 8 * Version 2.0 (the 'License'). You may not use this file except in 9 * compliance with the License. The rights granted to you under the License 10 * may not be used to create, or enable the creation or redistribution of, 11 * unlawful or unlicensed copies of an Apple operating system, or to 12 * circumvent, violate, or enable the circumvention or violation of, any 13 * terms of an Apple operating system software license agreement. 14 * 15 * Please obtain a copy of the License at 16 * http://www.opensource.apple.com/apsl/ and read it before using this file. 17 * 18 * The Original Code and all software distributed under the License are 19 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 20 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 21 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 22 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 23 * Please see the License for the specific language governing rights and 24 * limitations under the License. 25 * 26 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ 27 */ 28 #if defined(KERNEL) 29 #ifdef XNU_KERNEL_PRIVATE 30 /* 31 * Xcode doesn't currently set up search paths correctly for Kernel extensions, 32 * so the clang headers are not seen in the correct order to use their types. 33 */ 34 #endif 35 #define USE_CLANG_STDDEF 0 36 #else 37 #if defined(__has_feature) && __has_feature(modules) 38 #define USE_CLANG_STDDEF 1 39 #else 40 #define USE_CLANG_STDDEF 0 41 #endif 42 #endif 43 44 #if USE_CLANG_STDDEF 45 46 #ifndef __OFFSETOF 47 #define __OFFSETOF 48 49 #define __need_offsetof 50 #include <stddef.h> 51 #undef __need_offsetof 52 53 #endif /* __OFFSETOF */ 54 55 #else 56 57 #ifndef offsetof 58 #define offsetof(type, field) __offsetof(type, field) 59 #endif /* offsetof */ 60 61 #endif 62 63 #undef USE_CLANG_STDDEF 64