[boost] [Boost.MPI] Native MPI implementation not working with Boost MPI

Hello Everyone, I have been trying to use Open MPI v1.5.1 with Boost MPI v1.45.0 but there are linkage issues when I am trying to build the final executable. Has anyone used Open MPI with Boost MPI? If yes, what have been your versions? How did you build Open MPI sources -- did you use any specific options? The same problem happens again when I try use Microsoft MPI from their HPC Cluster Pack. Also I keep getting unresolved symbols like _ompi_mpi_char, _ompi_mpi_byte during the linking. Any idea what's causing this? Any help appreciated, Arpan