The SeVeNblend is a script in BASH which I had written to make the compilation of the latest Blender with Yaf(a)ray easier.
It can optimize your build by using user-config.py scripts, compile Blender with your own icons and make the Yaf(a)ray Export Script really works 
It’s GNU GPL v.2 so - do with it whatever you like.
I really insist on reading README file. You need some libraries to compile Blender. Also please ba patient - downloading whole code and compiling it from the scratch can last quite a while.
Hope it will work for you 
PS. It’s for GNU/Linux. Ubuntu 8.04 users will surely benefit from the ready-to-go ‘apt-get install…’ line in README file.