I just tried to emerge kdebase and failed, it says something about missing headers. Then I emerge kdelibs-2.2.2-r1 and unmerged kdelibs-2.2.2 and everthing went ok. Is it a problem with kdelibs-2.2.2 or there's dependency problem in kdebase2.2.2. Thanks, Joseph H. Yao
WORKSFORME, but have mailed submitter and will try to resolve
I've since committed a kde.eclass update that fixes this