Hello,
try installing kdelibs-devel rpm, and after that find out where exactly your KDE is installed by issuing the following command,
[code:1]which kde-config[/code:1]
on konsole.
In my case result is this,
[code:1]bash-2.05b$ which kde-config
/opt/kde/bin/kde-config
bash-2.05b$[/code:1]
so you can see that KDE is installed in /opt/kde, and that is the prefix I should use when compiling KDE programs.
I don't know where Redhat puts KDE but I suspect that it's somewhere under /usr, but as I said you can easily find out where it is.
Lets say I am going to compile some theme, so this is what I do:
[code:1]./configure --prefix=/opt/kde
make
su
make install[/code:1]
in your case it should go like this:
[code:1]./configure --prefix=<path-to-your-kde>
make
su
make install[/code:1]
Hope this helps.