1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
|
/*
* Cross platform defines for exporting symbols from shared libraries
*
* Wireshark - Network traffic analyzer
* By Balint Reczey <balint@balintreczey.hu>
* Copyright 2013 Balint Reczey
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
/** Reset symbol export behavior.
* If you {un}define WS_BUILD_DLL on the fly you'll have to define this
* as well.
*/
#ifdef RESET_SYMBOL_EXPORT
#ifdef SYMBOL_EXPORT_H
#undef SYMBOL_EXPORT_H
#endif
#ifdef WS_DLL_PUBLIC
#undef WS_DLL_PUBLIC
#endif
#ifdef WS_DLL_PUBLIC_NOEXTERN
#undef WS_DLL_PUBLIC_NOEXTERN
#endif
#ifdef WS_DLL_LOCAL
#undef WS_DLL_LOCAL
#endif
#endif /* RESET_SYMBOL_EXPORT */
#ifndef SYMBOL_EXPORT_H
#define SYMBOL_EXPORT_H
/* Originally copied from GCC Wiki at http://gcc.gnu.org/wiki/Visibility */
#if defined _WIN32 || defined __CYGWIN__
/* Compiling for Windows, so we use the Windows DLL declarations. */
#ifdef WS_BUILD_DLL
/*
* Building a library; for all definitions, we want dllexport, and
* (presumably so source from DLL and source from a program using the
* DLL can both include a header that declares APIs and exported data
* for the DLL), for declarations, either dllexport or dllimport will
* work (they mean the same thing for a declaration when building a DLL).
*/
#ifdef __GNUC__
/* GCC */
#define WS_DLL_PUBLIC __attribute__ ((dllexport)) extern
#define WS_DLL_PUBLIC_NOEXTERN __attribute__ ((dllexport))
#else /* ! __GNUC__ */
/*
* Presumably MSVC.
* Note: actually gcc seems to also support this syntax.
*/
#define WS_DLL_PUBLIC __declspec(dllexport) extern
#define WS_DLL_PUBLIC_NOEXTERN __declspec(dllexport)
#endif /* __GNUC__ */
#else /* WS_BUILD_DLL */
/*
* Building a program; we should only see declarations, not definitions,
* with WS_DLL_PUBLIC, and they all represent APIs or data imported
* from a DLL, so use dllimport.
*
* For functions, export shouldn't be necessary; for data, it might
* be necessary, e.g. if what's declared is an array whose size is
* not given in the declaration.
*/
#ifdef __GNUC__
/* GCC */
#define WS_DLL_PUBLIC __attribute__ ((dllimport)) extern
#define WS_DLL_PUBLIC_NOEXTERN __attribute__ ((dllimport))
#elif ! (defined ENABLE_STATIC) /* ! __GNUC__ */
/*
* Presumably MSVC.
* Note: actually gcc seems to also support this syntax.
*/
#define WS_DLL_PUBLIC __declspec(dllimport) extern
#define WS_DLL_PUBLIC_NOEXTERN __declspec(dllimport)
#else /* ! __GNUC__ && ENABLE_STATIC */
/* presumably MSVC */
#define WS_DLL_PUBLIC extern
#define WS_DLL_PUBLIC_NOEXTERN
#endif /* __GNUC__ */
#endif /* WS_BUILD_DLL */
#define WS_DLL_LOCAL
#else /* defined _WIN32 || defined __CYGWIN__ */
/*
* Compiling for UN*X, where the dllimport and dllexport stuff
* is neither necessary nor supported; just specify the
* visibility if we have a compiler that claims compatibility
* with GCC 4 or later.
*/
#if __GNUC__ >= 4
#define WS_DLL_PUBLIC __attribute__ ((visibility ("default"))) extern
#define WS_DLL_PUBLIC_NOEXTERN __attribute__ ((visibility ("default")))
#define WS_DLL_LOCAL __attribute__ ((visibility ("hidden")))
#else /* ! __GNUC__ >= 4 */
#define WS_DLL_PUBLIC extern
#define WS_DLL_PUBLIC_NOEXTERN
#define WS_DLL_LOCAL
#endif /* __GNUC__ >= 4 */
#endif
#endif /* SYMBOL_EXPORT_H */
|
