To start systemwide message dbus daemon whenever the machine boots,
add the following lines to /etc/rc.local:

if [ -x ${PREFIX}/bin/dbus-daemon ]; then
	mkdir -p /var/run/dbus
	chmod 0755 /var/run/dbus
	chown _dbus:_dbus /var/run/dbus

	${PREFIX}/bin/dbus-daemon --system
fi