Hello boost-users, I install boost_1-38 in centOS5.3. with following command; ./configure -with-libraries=all Then I add "using mpi ;" into user-configure.jam, when I make the MakeFile ,an error occur, ./tools/jam/src/bin.linuxx86/bjam --user-config=user-config.jam 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: Graph library does not contain optional GraphML reader. note: to enable GraphML support, set EXPAT_INCLUDE and EXPAT_LIBPATH to the note: directories containing the Expat headers and libraries, respectively. warning: skipping optional Message Passing Interface (MPI) library. note: to enable MPI support, add "using mpi ;" to user-config.jam. note: to suppress this message, pass "--without-mpi" to bjam. note: otherwise, you can safely ignore this message. Building Boost.Regex with the optional Unicode/ICU support disabled. Note: Please refer to the Boost.Regex documentation for more information Note: this is a strictly optional feature. Is there something wrong? 2009-04-17 wuguangjun