+#ifdef _XBT_DLL_EXPORT
+ #define DLL_EXPORT
+#else
+ #ifdef _XBT_DLL_STATIC
+ #define DLL_STATIC
+ #else
+ #define DLL_IMPORT
+ #endif
+#endif
+
+#cmakedefine _XBT_WIN32 @_XBT_WIN32@ //this variable is set if it is a windows platform
+#cmakedefine _WIN32 @_WIN32@ //this variable is set if it is a 32 bits windows platform
+#cmakedefine _WIN64 @_WIN64@ //this variable is set if it is a 64 bits windows platform
+#cmakedefine __VISUALC__ @__VISUALC__@
+#cmakedefine __BORLANDC__ @__BORLANDC__@
+