You should try out Kenge. http://www.disy.cse.unsw.edu.au/Software/Kenge.
We provide a small libc that can be targeted to a variety of environments.
There are also a number of other libraries that might be of use.
That's very helpful. I will have a look at it. I had heard of Iguana, Mungi, but maybe missed this one. Thanks a bunch.