-WXDLLIMPEXP_DATA_ODBC(extern wxChar const *) SQL_LOG_FILENAME;
-WXDLLIMPEXP_DATA_ODBC(extern wxChar const *) SQL_CATALOG_FILENAME;
+extern WXDLLIMPEXP_DATA_ODBC(wxChar const *) SQL_LOG_FILENAME;
+extern WXDLLIMPEXP_DATA_ODBC(wxChar const *) SQL_CATALOG_FILENAME;