kicad/include/import_export.h

67 lines
2.5 KiB
C

/*
* This program source code file is part of KiCad, a free EDA CAD application.
*
* Copyright (C) 2011 SoftPLC Corporation, Dick Hollenbeck <dick@softplc.com>
* Copyright (C) 2011-2023 KiCad Developers, see change_log.txt for contributors.
*
* 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, you may find one here:
* http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
* or you may search the http://www.gnu.org website for the version 2 license,
* or you may write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
*/
#ifndef IMPORT_EXPORT_H_
#define IMPORT_EXPORT_H_
/// Macros which export functions from a DLL/DSO.
/// See: http://gcc.gnu.org/wiki/Visibility
#if defined(_WIN32)
#define APIEXPORT __declspec(dllexport)
#define APIIMPORT __declspec(dllimport)
#define APILOCAL
#elif defined(__GNUC__) && __GNUC__ >= 4
// On ELF, we compile with hidden visibility, so unwrap that for specific symbols:
#define APIEXPORT __attribute__ ((visibility("default")))
#define APIIMPORT __attribute__ ((visibility("default")))
#define APILOCAL __attribute__ ((visibility("hidden")))
#else
#pragma message ( "warning: a supported C++ compiler is required" )
#define APIEXPORT
#define APIIMPORT
#define APILOCAL
#endif
// We use APIVISIBLE to mark extern template declarations where we cannot use APIEXPORT
// Because MSVC disallows mixing dllexport and extern templates, we can't just use APIEXPORT
// However MSVC is fine with the dllexport in the cpp file and extern in the header
// But we need the visibility declared on both instantiation and extern for GCC/Clang to make
// the symbol visible
#if defined( __GNUC__ ) || defined( __clang__ )
#define APIVISIBLE __attribute__ ((visibility("default")))
#else
#define APIVISIBLE
#endif
#if defined(COMPILING_DLL)
#define KIFACE_API APIEXPORT
#else
#define KIFACE_API APIIMPORT
#endif
#define KIFACE_LOCAL APILOCAL
#endif // IMPORT_EXPORT_H_