[],
[with_udevrulesdir=`pkg-config --variable=udevdir udev`/rules.d])
AC_ARG_WITH([rootprefix],
AS_HELP_STRING([--with-rootprefix=DIR], [rootfs directory prefix for config files and kernel modules]),
[],
[with_udevrulesdir=`pkg-config --variable=udevdir udev`/rules.d])
AC_ARG_WITH([rootprefix],
AS_HELP_STRING([--with-rootprefix=DIR], [rootfs directory prefix for config files and kernel modules]),