Install GDM by running the following commands: groupadd gdm && useradd -c gdm -d /dev/null -g gdm -s /bin/bash gdm && ./configure --prefix=`pkg-config --variable=prefix ORBit-2.0` \ --libexecdir=`pkg-config --variable=prefix ORBit-2.0`/sbin \ --sysconfdir=/etc/gnome --localstatedir=/var/lib \ --with-pam-prefix=/etc && make && make install