You have disabled or you are missing required librairies required to compile Jabber Jingle voice support.
Jingle is a new Jabber standard that define a signaling protocol via XMPP for peer-to-peer applications.
Jingle audio is compatible with Google Talk voice offering.
Required Jingle dependencies are listed on this page:
http://wiki.kde.org/tiki-index.php?page=Kopete+Jabber+Jingle
You're missing OpenSLP, or the OpenSLP devel package.
Browsing in krfb and krdc will not be possible.
If you want browsing support in krfb, you should consider
installing it.
Have a look at http://www.openslp.org/ or find a binary
package for your platform.
You're missing the XMMS libraries, or the libxmms development package.
Without libxmms Kopete's NowListening plugin won't be able to talk to
the XMMS music player. If you want Kopete's NowListening plugin to
support XMMS, have a look at http://www.xmms.org/ or find a
binary package for your system.