+ AC_CHECK_HEADERS(windows.h, ,[echo "Device win32, but <windows.h> not found - aborting"; exit 1] )
+ AC_CHECK_HEADERS(winioctl.h, ,[echo "Device win32, but <winioctl.h> not found - aborting"; exit 1],
+[#ifdef HAVE_WINDOWS_H
+#include <windows.h>
+#endif
+])