/* * Copyright (c) 2005-2009 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@ */ #include <stdbool.h> #include <Availability.h> // _dyld_func_lookup is only available in 10.5 and earlier #if defined(__MAC_OS_X_VERSION_MIN_REQUIRED) && (__MAC_OS_X_VERSION_MIN_REQUIRED <= __MAC_10_5) extern bool _dyld_func_lookup(const char* dyld_func_name, void** address); bool check_dyld_func_lookup() { void* address; // dlopen does not exist, something is wrong if ( ! _dyld_func_lookup("__dyld_dlopen", &address) ) return false; // if a garbage string returns true, something is wrong if ( _dyld_func_lookup("blablah", &address) ) return false; // looks good return true; } #endif