/* * 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> // Define SUPPORT_GC=1 to enable garbage collection. // Be sure to edit OBJC_NO_GC in objc-auto.h as well. #if TARGET_OS_EMBEDDED || TARGET_OS_IPHONE || TARGET_OS_WIN32 # define SUPPORT_GC 0 #else # define SUPPORT_GC 1 #endif // Define SUPPORT_ENVIRON=1 to enable getenv(). #if ((TARGET_OS_EMBEDDED || TARGET_OS_IPHONE) && !TARGET_IPHONE_SIMULATOR) && defined(NDEBUG) # define SUPPORT_ENVIRON 0 #else # define SUPPORT_ENVIRON 1 #endif // Define SUPPORT_ZONES=1 to enable malloc zone support in NXHashTable. #if TARGET_OS_EMBEDDED || TARGET_OS_IPHONE # 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_IPHONE_SIMULATOR # define SUPPORT_PREOPT 0 #else # define SUPPORT_PREOPT 1 #endif // Define SUPPORT_DEBUGGER_MODE=1 to enable lock-avoiding execution for debuggers #if TARGET_OS_WIN32 # define SUPPORT_DEBUGGER_MODE 0 #else # define SUPPORT_DEBUGGER_MODE 1 #endif // Define SUPPORT_TAGGED_POINTERS=1 to enable tagged pointer objects // Be sure to edit objc-internal.h as well (_objc_insert_tagged_isa) #if !(__OBJC2__ && __LP64__) # define SUPPORT_TAGGED_POINTERS 0 #else # define SUPPORT_TAGGED_POINTERS 1 #endif // Define SUPPORT_FIXUP=1 to use call-site fixup messaging for OBJC2. // Be sure to edit objc-abi.h as well (objc_msgSend*_fixup) #if !__OBJC2__ || !defined(__x86_64__) # define SUPPORT_FIXUP 0 #else # define SUPPORT_FIXUP 1 #endif // Define SUPPORT_VTABLE=1 to enable vtable dispatch for OBJC2. // Be sure to edit objc-gdb.h as well (gdb_objc_trampolines) #if !SUPPORT_FIXUP # define SUPPORT_VTABLE 0 #else # define SUPPORT_VTABLE 1 #endif // Define SUPPORT_IGNORED_SELECTOR_CONSTANT to remap GC-ignored selectors. // Good: fast ignore in objc_msgSend. Bad: disable shared cache optimizations // Non-GC does not remap. Fixup dispatch does not remap. #if !SUPPORT_GC || SUPPORT_FIXUP # define SUPPORT_IGNORED_SELECTOR_CONSTANT 0 #else # define SUPPORT_IGNORED_SELECTOR_CONSTANT 1 # if defined(__i386__) # define kIgnore 0xfffeb010 # else # error unknown architecture # endif #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__) # 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 !__OBJC2__ || TARGET_OS_WIN32 # define SUPPORT_RETURN_AUTORELEASE 0 #else # define SUPPORT_RETURN_AUTORELEASE 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