[ale] umbrello build troubles

[timtw at earthlink.net (Tim Watts)]

Hi,

I'm trying to build Umbrello 1.5.0 on my open SuSE 10.0 system (KDE v3.4.2) 
but I keep getting this error:

	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!

I've tried several commands:
./configure
./configure --prefix=/opt/kde3/
./configure --prefix=/opt/kde3/include

I've also downloaded and tried to build the kdesdk and I get the same error.

Where are these headers located or where can i get them?