I'm trying to build boost 1.38.0 on Windows, with MSVC 8.0 and bjam 3.1.17, and I get this error : D:\boost_1_38_0>bjam -q -j3 -d+2 --toolset=msvc --build-type=complete Skipping build of: ./headers <build>no in common properties Skipping build of: ./headers <build>no in common properties Skipping build of: ./headers <build>no in common properties Skipping build of: ./headers <build>no in common properties 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. Skipping build of: ./build_all <build>no in common properties Skipping build of: ./build_all <build>no in common properties Skipping build of: ./build_all <build>no in common properties Skipping build of: ./build_all <build>no in common properties common.mkdir bin.v2 if not exist "bin.v2\\" mkdir "bin.v2" 'C:\Documents' is not recognized as an internal or external command, operable program or batch file. ...skipped bin.v2\libs for lack of bin.v2... Thanks in advance.