Guide updated directly in XDA's thread - no need to link out to my site.
I only tried to compile CWM a couple of times and my mount points didn't make sense (they kind of worked to do a nandroid but soft bricked on restore) so I gavce up quickly as I'd moved on to developing RK3066 at the time. To the point, Allwinner SDK is (apart from Actions Semiconductor) not the best and even Amlogic is better. For the Chinese chip tablets the RK3**** stuff is certainly the best.