dnl Make my life easier
AC_DEFUN(AC_ARG_DEFAULT, [
	AC_MSG_CHECKING(for --enable-$1)
	AC_ARG_ENABLE($1,
		[$4 $5],
		AC_MSG_RESULT(${enable_$1}),
		enable_$1=$3
		 AC_MSG_RESULT($3))
	if test ${enable_$1} = "yes" -a -n "$2" ; then AC_DEFINE($2, 1, $5) fi
	])