Command explanations
--sysconfdir=/etc/gnome : This command puts
configuration files in /etc/gnome instead of
/opt/gnome2/etc.
--localstatedir=/var/lib : This command
puts files in /var/lib instead of
/opt/gnome2/var.
--with-pam-prefix=/etc : This command puts pam
configuration files in /etc/pam.d instead of
/etc/gnome.