but I don't really understand if anyone is interested in RHEL5 builds other than me.
Much of the world. If this doesn't work on Centos, it's worthless. Kinda like coming up
with windows only mining software

To the author, this is what was required to build poclbm under centos:
http://forum.bitcoin.org/?topic=7534.0RedHat and Centos uses older (proven stable) versions of their software.
Unfortunatly I, like zaytsev, am stuck using poclbm atm.
* Viceroy sadly drops his head and walks away
Anyway I've committed a fix to the git tree which prevents using just the sockopt function if the version of curl is too old. This should fix it building on older curls.