KGantt

libutil.h
1 /*
2  * SPDX-FileCopyrightText: 2001-2015 Klaralvdalens Datakonsult AB. All rights reserved.
3  *
4  * This file is part of the KGantt library.
5  *
6  * SPDX-License-Identifier: GPL-2.0-or-later
7  */
8 
9 #ifndef __ASCSHARED_UTIL_LIBUTIL_H__
10 #define __ASCSHARED_UTIL_LIBUTIL_H__
11 
12 // These two macros can be used to force the loading of static objects in static libraries.
13 // Under normal circumstances, the linker automatically discards unused library symbols from the final executable,
14 // which is a problem for static objects with a constructor performing a specific action such as registration.
15 // Note that the export macro only needs to be included once per .cpp file (even if there are many static objects in the file).
16 // Parameters :
17 // - ID : an file-wide identifier, e.g. the filename without the extension.
18 // It shouldn't be quoted, no spaces, and contain only alphanumerical characters.
19 #define KDAB_EXPORT_STATIC_SYMBOLS( ID ) int __init_##ID##_static_symbols() { return 0; }
20 #define KDAB_IMPORT_STATIC_SYMBOLS( ID ) extern int __init_##ID##_static_symbols(); \
21  static int fake_init##ID = __init_##ID##_static_symbols();
22 
23 #endif // __ASCSHARED_UTIL_LIBUTIL_H__
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