ok kernal-headers is also a rpm....
sh*t, now it wants readline and rpm tell me readline is installed.
Seems this "easy" server is over-simplified. I did not install this system. Just ran into it on a clients site. Not impressed. All I want to do is set up postgresql 7.3.4 and get on with my work. Not all this mucking about with a server that has none of the right files installed or linked.
It seems not that readline and zlib can not be found by the postgresql ./configure script.