C++ iostream problem in uClibc++ library

Hi all

I am porting uClibc++ library for a standalone os-less barecoard. The
uClibc C library is working fine. But uClibc++ std::cin & std::cout are not
working. Almost all other C++ features are working like class, new &
delete, ctor & dtor, exception handling etc.

While other features are working BUT cin & cout are not working. What the
problem may be?

Any help!

- Vikram Singh