[Boost-users] Green Hills Integrity and boost?

We have successfully used several boost libraries on our real-time embedded system that runs under one of the real-time Linux variants. We are going to continue the development of this program under the Green Hills Integrity environment (it wasn't my decision ;-) ). Has anyone used boost under this environment before? I understand they have their own C++ compiler which uses the EDG front end, and their OS calls have POSIX interfaces, but that's all I really know. Thanks for sharing any experiences.