Problem compiling KDE apps

I'm having a problem compiling kat. Also had the same problem with superkarumba.

# ./configure
(lots of checks here)
checking whether uic supports -L ... yes
checking whether uic supports -nounload ... yes
checking if Qt needs -ljpeg... no
checking for rpath... yes
checking for KDE... configure: error:
in the prefix, you've chosen, are no KDE headers installed. This will fail.
So, check this please and use another prefix!
#

Maybe the debian KDE libs are in a non-standard place? How do I tell configure where the headers are installed? It doesn't say how to change the prefix in the INSTALL text file.

Got it! I needed to install kdelibs4-dev. I thought that I had installed it, but a conflicting package was preventing it from installing. Sometimes apt can be tricky that way.