I am trying to build Boost.MPI for the first time. I've downloaded and installed MPICH2 on my Windows XP machine, and added "using mpi ;" to tools/build/v2/user-config.jam file, and the mpich2/bin to the path. When I run bjam, I get the following output. ------------------------------------------------------ C:\root\Development\Library\Boost\boost_1_39_0>..\bjam --with-mpi The system cannot find the path specified. The system cannot find the path specified. The system cannot find the path specified. MPI auto-detection failed: unknown wrapper compiler mpic++ Please report this error to the Boost mailing list: http://www.boost.org You will need to manually configure MPI support. WARNING: No python installation configured and autoconfiguration failed. See http://www.boost.org/libs/python/doc/building.html for configuration instructions or pass --without-python to suppress this message and silently skip all Boost.Python targets Building C++ Boost. ------------------------------------------------------ The environment runs for building all other Boost libraries. Any ideas what's wrong or how to diagnose the problem? Thanks -- Craig   Craig Henderson http://www.craighenderson.co.uk http://www.siteupdatenotification.com