1/*
2 * Copyright (c) 2005-2009 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#include <stdbool.h>
25#include <Availability.h>
26
27
28// _dyld_func_lookup is only available in 10.5 and earlier
29#if defined(__MAC_OS_X_VERSION_MIN_REQUIRED) && (__MAC_OS_X_VERSION_MIN_REQUIRED <= __MAC_10_5)
30
31extern bool _dyld_func_lookup(const char* dyld_func_name, void** address);
32
33
34
35bool check_dyld_func_lookup()
36{
37	void* address;
38
39	// dlopen does not exist, something is wrong
40	if ( ! _dyld_func_lookup("__dyld_dlopen", &address) )
41		return false;
42
43	// if a garbage string returns true, something is wrong
44	if ( _dyld_func_lookup("blablah", &address) )
45		return false;
46
47	// looks good
48	return true;
49}
50
51#endif
52