xref: /freebsd/contrib/ntp/sntp/libevent/include/event2/visibility.h (revision a466cc55373fc3cf86837f09da729535b57e69a1)
1 /* -*- Mode: C; tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*- */
2 /*
3  * Copyright (c) 2007-2012 Niels Provos and Nick Mathewson
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  * 1. Redistributions of source code must retain the above copyright
9  *    notice, this list of conditions and the following disclaimer.
10  * 2. Redistributions in binary form must reproduce the above copyright
11  *    notice, this list of conditions and the following disclaimer in the
12  *    documentation and/or other materials provided with the distribution.
13  * 3. The name of the author may not be used to endorse or promote products
14  *    derived from this software without specific prior written permission.
15  *
16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
20  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
21  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
25  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26  */
27 #ifndef EVENT2_VISIBILITY_H_INCLUDED_
28 #define EVENT2_VISIBILITY_H_INCLUDED_
29 
30 #include <event2/event-config.h>
31 
32 #if defined(event_shared_EXPORTS) || \
33     defined(event_extra_shared_EXPORTS) || \
34     defined(event_core_shared_EXPORTS) || \
35     defined(event_pthreads_shared_EXPORTS) || \
36     defined(event_openssl_shared_EXPORTS)
37 
38 # if defined (__SUNPRO_C) && (__SUNPRO_C >= 0x550)
39 #  define EVENT2_EXPORT_SYMBOL __global
40 # elif defined __GNUC__
41 #  define EVENT2_EXPORT_SYMBOL __attribute__ ((visibility("default")))
42 # elif defined(_MSC_VER)
43 #  define EVENT2_EXPORT_SYMBOL __declspec(dllexport)
44 # else
45 #  define EVENT2_EXPORT_SYMBOL /* unknown compiler */
46 # endif
47 
48 #else /* event_*_EXPORTS */
49 
50 # define EVENT2_EXPORT_SYMBOL
51 
52 #endif /* event_*_EXPORTS */
53 
54 /** We need to dllimport event_debug_logging_mask_ into event_extra */
55 #if defined(_MSC_VER)
56 # if defined(event_core_shared_EXPORTS) /** from core export */
57 #  define EVENT2_CORE_EXPORT_SYMBOL __declspec(dllexport)
58 # elif defined(event_extra_shared_EXPORTS) || /** from extra import */ \
59        defined(EVENT_VISIBILITY_WANT_DLLIMPORT)
60 #  define EVENT2_CORE_EXPORT_SYMBOL __declspec(dllimport)
61 # endif
62 #endif /* _MSC_VER */
63 #if !defined(EVENT2_CORE_EXPORT_SYMBOL)
64 # define EVENT2_CORE_EXPORT_SYMBOL EVENT2_EXPORT_SYMBOL
65 #endif
66 
67 #endif /* EVENT2_VISIBILITY_H_INCLUDED_ */
68