Hello I'm trying to install boost and its MPI bindings on a Cray XE6 and this is what I get after adding using mpi ; to user-config.jam: MPI auto-detection failed: unknown wrapper compilerhttp://omgili.com/mailinglist/boost-users/lists/boost/org/4BC2BA3E2040204hel... /opt/cray/xt-asyncpe/4.9/bin/CC or MPI auto-detection failed: unknown wrapper compiler mpic++ (mpic++ -bash: mpic++: command not found) If I understand correctly boost only checks for mpicc and related executables and also tries mpirun. None of these are supposed to be used on an XE6 The compiler commands to use are cc, CC and ftn. More information for I think the same machine: https://www.nersc.gov/users/getting-started/http://www.csc.fi/english/pages/louhi_guide/program_development/compilers/in... these compiler cc, CC and ftn are using directly to compile an MPI program (don't use mpiCC to compile) Actually CC is using the GNU compiler module switch PrgEnv-pgi PrgEnv-gnu CC --version /opt/cray/xt-asyncpe/4.9/bin/CC: INFO: Compiling with XTPE_COMPILE_TARGET=native. g++ (GCC) 4.5.2 20101216 (Cray Inc.) I need to build boost mpi with this compiler (CC). How can I make bjam do that?? Thank you K.H