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109 lines
3.8 KiB
C++
109 lines
3.8 KiB
C++
#ifndef jkqtcommon_IMPORT_H
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#define jkqtcommon_IMPORT_H
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/*
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Copyright (c) 2008-2020 Jan W. Krieger (<jan@jkrieger.de>)
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last modification: $LastChangedDate: 2015-04-02 13:55:22 +0200 (Do, 02 Apr 2015) $ (revision $Rev: 3902 $)
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This software is free software: you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License (LGPL) as published by
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the Free Software Foundation, either version 2.1 of the License, or
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(at your option) any later version.
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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 Lesser General Public License (LGPL) for more details.
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You should have received a copy of the GNU Lesser General Public License (LGPL)
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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/*! \def JKQTCOMMON_LIB_EXPORT
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\ingroup tools
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This define allows to export functions and classes from the jkqtcommon-library when building a dynamic/shared library.
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Usage is as follows:
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\code
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#include "jkqtcommon/jkqtcommon_imexport.h"
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class JKQTCOMMON_LIB_EXPORT exportedClassName {
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...
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};
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JKQTCOMMON_LIB_EXPORT void exportedFunctionName();
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\endcode
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These macros append the appropriate \c __declspec(dllexport) and \c __declspec(dllimport)
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to the function/class body and thus tell windows compilers to export these sysmbols from
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the shared library, or import them from a shared library.
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Note that these attributes are only necessary on windows systems!
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These macros are controlled by two other macros:
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- \c JKQTCOMMON_LIB_IN_DLL declares that the application should link against a shared version of
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JKQTCommon, i.e. \c JKQTCommonSharedLib_XYZ .
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This needs to be defined while compiling the library and while compiling
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any application linking against \c JKQTCommonSharedLib_XYZ.
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- \c JKQTCOMMON_LIB_EXPORT_LIBRARY is only defined while compiling JKQTCommon into \c JKQTCommonSharedLib_XYZ
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and ensures thet the symbols are exported. If it is not defined (e.g. while
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compiling an application), the symbols are imported
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.
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*/
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/*! \def JKQTCOMMON_LIB_IN_DLL
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\ingroup tools
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\brief declares that the application should link against a shared version of
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JKQTCommon, i.e. \c JKQTCommonSharedLib_XYZ .
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This needs to be defined while compiling the library and while compiling
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any application linking against \c JKQTCommonSharedLib_XYZ.
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*/
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/*! \def JKQTCOMMON_LIB_EXPORT_LIBRARY
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\ingroup tools
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\brief is only defined while compiling JKQTCommon into \c JKQTCommonSharedLib_XYZ
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and ensures thet the symbols are exported. If it is not defined (e.g. while
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compiling an application), the symbols are imported
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*/
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# ifndef __WINDOWS__
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# if defined(WIN32) || defined(WIN64) || defined(_MSC_VER) || defined(_WIN32)
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# define __WINDOWS__
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# endif
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# endif
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#ifdef __WINDOWS__
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# ifdef JKQTCOMMON_LIB_IN_DLL
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# ifndef JKQTCOMMON_LIB_EXPORT
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# ifdef JKQTCOMMON_LIB_EXPORT_LIBRARY
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/* We are building this library */
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# define JKQTCOMMON_LIB_EXPORT __declspec(dllexport)
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# else
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/* We are using this library */
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# define JKQTCOMMON_LIB_EXPORT __declspec(dllimport)
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# endif
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# endif
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# else
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# ifndef JKQTCOMMON_LIB_EXPORT
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# define JKQTCOMMON_LIB_EXPORT
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# endif
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# endif
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#else
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# define JKQTCOMMON_LIB_EXPORT
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#endif
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#endif // jkqtcommon_IMPORT_H
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