#ifndef __FG_COMMANDS_HXX
#define __FG_COMMANDS_HXX
-#ifndef __cplusplus
+#ifndef __cplusplus
# error This library requires C++
-#endif
+#endif
#ifdef HAVE_CONFIG_H
#endif
#ifdef HAVE_WINDOWS_H
-# include <windows.h>
+# include <windows.h>
#endif
#include <simgear/structure/commands.hxx>