+AC_MSG_CHECKING([default value for --modify-window])
+case $host_os in
+ *cygwin* ) DEFAULT_MODIFY_WINDOW=${DEFAULT_MODIFY_WINDOW:-2};;
+ * ) DEFAULT_MODIFY_WINDOW=${DEFAULT_MODIFY_WINDOW:-0};;
+esac
+AC_MSG_RESULT($DEFAULT_MODIFY_WINDOW)
+AC_DEFINE_UNQUOTED(DEFAULT_MODIFY_WINDOW, $DEFAULT_MODIFY_WINDOW,
+ [Set to the default value for the --modify-window option])
+