forked from osmocom/wireshark
82 lines
2.5 KiB
C
82 lines
2.5 KiB
C
/*
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* Cross platform defines for exporting symbols from shared libraries
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*
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* Wireshark - Network traffic analyzer
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* By Balint Reczey <balint@balintreczey.hu>
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* Copyright 2013 Balint Reczey
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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/** Reset symbol export behavior.
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* If you {un}define WS_BUILD_DLL on the fly you'll have to define this
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* as well.
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*/
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#ifdef RESET_SYMBOL_EXPORT
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#ifdef SYMBOL_EXPORT_H
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#undef SYMBOL_EXPORT_H
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#endif
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#ifdef WS_DLL_PUBLIC
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#undef WS_DLL_PUBLIC
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#endif
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#ifdef WS_DLL_PUBLIC_NOEXTERN
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#undef WS_DLL_PUBLIC_NOEXTERN
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#endif
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#ifdef WS_DLL_LOCAL
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#undef WS_DLL_LOCAL
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#endif
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#endif /* RESET_SYMBOL_EXPORT */
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#ifndef SYMBOL_EXPORT_H
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#define SYMBOL_EXPORT_H
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/* Originally copied from GCC Wiki at http://gcc.gnu.org/wiki/Visibility */
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#if defined _WIN32 || defined __CYGWIN__
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#ifdef WS_BUILD_DLL
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#ifdef __GNUC__
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#define WS_DLL_PUBLIC __attribute__ ((dllexport))
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#else /* ! __GNUC__ */
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#define WS_DLL_PUBLIC __declspec(dllexport) /* Note: actually gcc seems to also support this syntax. */
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#endif /* __GNUC__ */
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#else
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#ifdef __GNUC__
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#define WS_DLL_PUBLIC __attribute__ ((dllimport))
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#elif ! (defined ENABLE_STATIC) /* ! __GNUC__ */
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#define WS_DLL_PUBLIC __declspec(dllimport) /* Note: actually gcc seems to also support this syntax. */
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#else /* ! __GNUC__ && ENABLE_STATIC */
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#define WS_DLL_PUBLIC
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#endif /* __GNUC__ */
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#endif /* WS_BUILD_DLL */
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#define WS_DLL_PUBLIC_NOEXTERN WS_DLL_PUBLIC
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#define WS_DLL_LOCAL
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#else
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#if __GNUC__ >= 4
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#define WS_DLL_PUBLIC __attribute__ ((visibility ("default"))) extern
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#define WS_DLL_PUBLIC_NOEXTERN __attribute__ ((visibility ("default")))
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#define WS_DLL_LOCAL __attribute__ ((visibility ("hidden")))
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#else /* ! __GNUC__ >= 4 */
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#define WS_DLL_PUBLIC
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#define WS_DLL_PUBLIC_NOEXTERN
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#define WS_DLL_LOCAL extern
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#endif /* __GNUC__ >= 4 */
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#endif
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#endif /* SYMBOL_EXPORT_H */
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