Are you using current CVS of CrystalSpace, the 0.96 release of crystal space, the MB version of crystalspace, or another version? The reason I ask is because as Acraig mentioned, the cssys library has been merged with another library, and also the rule that Jam is using (OCc) is not normal - usually I see \"ObjC\"
That together with the error points to an older version of CS with broken Jam files. If you\'re attempting to do a build of CVS Planeshift, I would suggest a completely clean checkout of Crystal Space.
Be aware, however, that you won\'t really get anything playable - the current Planeshift server won\'t work with the Mac client, since changes have been made since it was released. If what you\'re looking for is the planeshift experience, I suggest trying it out on a PC before putting yourself through a struggle with the frighteningly complex build systems of CS and PS. (Not that I take my own advice here
)
EDIT:
Following some earlier conversation in another thread, I now realise that you are trying to build the Molecular Blue client. I do not know how accurate AlanOne\'s instructions are, but if they\'re accurate they must be followed to the letter, as some pretty hairy stuff is going on. By the sounds of it, your CMD.OBJC rule is messed up - did you set that in Jamconfig?
I don\'t know if he got a build able to connect with the main PS server or not; if he did then that\'s great.