/* * Copyright (c) 1999-2002, 2005-2008 Apple Inc. All Rights Reserved. * * @APPLE_LICENSE_HEADER_START@ * * This file contains Original Code and/or Modifications of Original Code * as defined in and that are subject to the Apple Public Source License * Version 2.0 (the 'License'). You may not use this file except in * compliance with the License. Please obtain a copy of the License at * http://www.opensource.apple.com/apsl/ and read it before using this * file. * * The Original Code and all software distributed under the License are * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. * Please see the License for the specific language governing rights and * limitations under the License. * * @APPLE_LICENSE_HEADER_END@ */ #ifndef _OBJC_CONFIG_H_ #define _OBJC_CONFIG_H_ #include <TargetConditionals.h> // Avoid the !NDEBUG double negative. #if !NDEBUG # define DEBUG 1 #else # define DEBUG 0 #endif // Define SUPPORT_GC_COMPAT=1 to enable compatibility where GC once was. // OBJC_NO_GC and OBJC_NO_GC_API in objc-api.h mean something else. #if !TARGET_OS_OSX # define SUPPORT_GC_COMPAT 0 #else # define SUPPORT_GC_COMPAT 1 #endif // Define SUPPORT_ZONES=1 to enable malloc zone support in NXHashTable. #if !TARGET_OS_OSX # define SUPPORT_ZONES 0 #else # define SUPPORT_ZONES 1 #endif // Define SUPPORT_MOD=1 to use the mod operator in NXHashTable and objc-sel-set #if defined(__arm__) # define SUPPORT_MOD 0 #else # define SUPPORT_MOD 1 #endif // Define SUPPORT_PREOPT=1 to enable dyld shared cache optimizations #if TARGET_OS_WIN32 || TARGET_OS_SIMULATOR # define SUPPORT_PREOPT 0 #else # define SUPPORT_PREOPT 1 #endif // Define SUPPORT_TAGGED_POINTERS=1 to enable tagged pointer objects // Be sure to edit tagged pointer SPI in objc-internal.h as well. #if !(__OBJC2__ && __LP64__) # define SUPPORT_TAGGED_POINTERS 0 #else # define SUPPORT_TAGGED_POINTERS 1 #endif // Define SUPPORT_MSB_TAGGED_POINTERS to use the MSB // as the tagged pointer marker instead of the LSB. // Be sure to edit tagged pointer SPI in objc-internal.h as well. #if !SUPPORT_TAGGED_POINTERS || !TARGET_OS_IPHONE # define SUPPORT_MSB_TAGGED_POINTERS 0 #else # define SUPPORT_MSB_TAGGED_POINTERS 1 #endif // Define SUPPORT_INDEXED_ISA=1 on platforms that store the class in the isa // field as an index into a class table. // Note, keep this in sync with any .s files which also define it. // Be sure to edit objc-abi.h as well. #if __ARM_ARCH_7K__ >= 2 # define SUPPORT_INDEXED_ISA 1 #else # define SUPPORT_INDEXED_ISA 0 #endif // Define SUPPORT_PACKED_ISA=1 on platforms that store the class in the isa // field as a maskable pointer with other data around it. #if (!__LP64__ || TARGET_OS_WIN32 || TARGET_OS_SIMULATOR) # define SUPPORT_PACKED_ISA 0 #else # define SUPPORT_PACKED_ISA 1 #endif // Define SUPPORT_NONPOINTER_ISA=1 on any platform that may store something // in the isa field that is not a raw pointer. #if !SUPPORT_INDEXED_ISA && !SUPPORT_PACKED_ISA # define SUPPORT_NONPOINTER_ISA 0 #else # define SUPPORT_NONPOINTER_ISA 1 #endif // Define SUPPORT_FIXUP=1 to repair calls sites for fixup dispatch. // Fixup messaging itself is no longer supported. // Be sure to edit objc-abi.h as well (objc_msgSend*_fixup) #if !(defined(__x86_64__) && (TARGET_OS_OSX || TARGET_OS_SIMULATOR)) # define SUPPORT_FIXUP 0 #else # define SUPPORT_FIXUP 1 #endif // Define SUPPORT_ZEROCOST_EXCEPTIONS to use "zero-cost" exceptions for OBJC2. // Be sure to edit objc-exception.h as well (objc_add/removeExceptionHandler) #if !__OBJC2__ || (defined(__arm__) && __USING_SJLJ_EXCEPTIONS__) # define SUPPORT_ZEROCOST_EXCEPTIONS 0 #else # define SUPPORT_ZEROCOST_EXCEPTIONS 1 #endif // Define SUPPORT_ALT_HANDLERS if you're using zero-cost exceptions // but also need to support AppKit's alt-handler scheme // Be sure to edit objc-exception.h as well (objc_add/removeExceptionHandler) #if !SUPPORT_ZEROCOST_EXCEPTIONS || TARGET_OS_IPHONE || TARGET_OS_EMBEDDED # define SUPPORT_ALT_HANDLERS 0 #else # define SUPPORT_ALT_HANDLERS 1 #endif // Define SUPPORT_RETURN_AUTORELEASE to optimize autoreleased return values #if TARGET_OS_WIN32 # define SUPPORT_RETURN_AUTORELEASE 0 #else # define SUPPORT_RETURN_AUTORELEASE 1 #endif // Define SUPPORT_STRET on architectures that need separate struct-return ABI. #if defined(__arm64__) # define SUPPORT_STRET 0 #else # define SUPPORT_STRET 1 #endif // Define SUPPORT_MESSAGE_LOGGING to enable NSObjCMessageLoggingEnabled #if TARGET_OS_WIN32 || TARGET_OS_EMBEDDED # define SUPPORT_MESSAGE_LOGGING 0 #else # define SUPPORT_MESSAGE_LOGGING 1 #endif // Define SUPPORT_QOS_HACK to work around deadlocks due to QoS bugs. #if !__OBJC2__ || TARGET_OS_WIN32 # define SUPPORT_QOS_HACK 0 #else # define SUPPORT_QOS_HACK 1 #endif // OBJC_INSTRUMENTED controls whether message dispatching is dynamically // monitored. Monitoring introduces substantial overhead. // NOTE: To define this condition, do so in the build command, NOT by // uncommenting the line here. This is because objc-class.h heeds this // condition, but objc-class.h can not #include this file (objc-config.h) // because objc-class.h is public and objc-config.h is not. //#define OBJC_INSTRUMENTED #endif