參考這裡：
http://forums.gentoo.org/viewtopic.php? ... notcompile
大意
先到 http://docs.kde.org/ 看看
ex: kdemultimedia裡面有好多東西 但我只會用到kmix
那麼就
#DO_NOT_COMPILE="juk kaboodle kmid krec kscd noatun" emerge kdemultimedia
有的討論寫到對kdebase也這樣作，不過我是不大想
因為他可能牽涉比較多library....
所以我只對kdebase kdelibs以外的東西下手
不過我還沒試，但我硬碟的確有裝很多用不到的KDE software
用kde，可以不必裝一大堆沒用到的軟體
Moderator: Forums Team
不過我覺得最保險比較不會出錯的，就是first look here:
http://webcvs.kde.org/cgi-bin/cvsweb.cgi/
You see directories with ebuilds like kdebase, in each directory, there is a README included, open it.
Now you can download the doc, what you see now is a list with programs inside the ebuild, some of them are mandatory but you can use DO_NOT_COMPILE="prog1 prog2 prog3" to NOT compile them with for example kdebase.
ex: #emerge kdenetwork
會出現check訊息，到要開始compile之前，會出現
checking if doc should be compiled... yes
checking if kdict should be compiled... yes
checking if kget should be compiled... yes
checking if kopete should be compiled... yes
checking if kpf should be compiled... yes
checking if kppp should be compiled... yes
checking if krdc should be compiled... yes
checking if krfb should be compiled... yes
checking if ksirc should be compiled... yes
checking if ktalkd should be compiled... yes
checking if lanbrowsing should be compiled... yes
checking if librss should be compiled... yes
checking if wifi should be compiled... yes
checking if knewsticker should be compiled... yes
checking if dcoprss should be compiled... yes
照這些去刪，比較不會錯
