OSX/sec/ProjectHeaders/Security/SecureObjectSync/SOSARCDefines.h

   1 /*
   2  * Copyright (c) 2012,2014 Apple Inc. All Rights Reserved.
   3  *
   4  * @APPLE_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. Please obtain a copy of the License at
  10  * http://www.opensource.apple.com/apsl/ and read it before using this
  11  * file.
  12  *
  13  * The Original Code and all software distributed under the License are
  14  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  15  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  16  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  18  * Please see the License for the specific language governing rights and
  19  * limitations under the License.
  20  *
  21  * @APPLE_LICENSE_HEADER_END@
  22  */
  23
  24
  25 #ifndef sec_SOSARCDefines_h
  26 #define sec_SOSARCDefines_h
  27
  28 #ifndef __has_feature
  29 #define __has_feature(x) 0
  30 #endif
  31 #ifndef __has_extension
  32 #define __has_extension __has_feature // Compatibility with pre-3.0 compilers.
  33 #endif
  34
  35 #if __has_feature(objc_arc) && __clang_major__ >= 3
  36 #define ARC_ENABLED 1
  37 #endif // __has_feature(objc_arc)
  38
  39 #if !ARC_ENABLED || !defined(__clang__) || __clang_major__ < 3
  40
  41 #ifndef __bridge
  42 #define __bridge
  43 #endif
  44 #ifndef __bridge_retained
  45 #define __bridge_retained
  46 #endif
  47 #ifndef __bridge_transfer
  48 #define __bridge_transfer
  49 #endif
  50 #ifndef __autoreleasing
  51 #define __autoreleasing
  52 #endif
  53 #ifndef __strong
  54 #define __strong
  55 #endif
  56 #ifndef __weak
  57 #define __weak
  58 #endif
  59 #ifndef __unsafe_unretained
  60 #define __unsafe_unretained
  61 #endif
  62
  63 #endif // __clang_major__ < 3
  64
  65 #endif