The best way to look for information about CrystalSpace is either in the documentation they provide on
http://www.crystalspace3d.org or by joining their channel on
irc.freenode.net which is
#crystalspaceFor PlaneShift related things, there are a few stickied threads in this section, which point to the official build guide ->
here. Simply select Linux from the drop down menu and that will suffice in most cases.