Command explanations
--prefix=$GNOME_PREFIX: This is the Base
installation for GNOME from which all future
installations will receive their prefix parameter. Be sure that
GNOME_PREFIX is set for this install or globally to your
install directory as described in the introduction of this Section.
--sysconfdir=/etc/gnome: This switch puts
configuration files in /etc/gnome
instead of
$GNOME_PREFIX/etc.