I've noticed that you are testing the serialization library with the toolset msvc-stlport. I've tested that here and got most of to pass - at least as well as standard msvc. I had to make some changes though and I believe that you will have to make similar ones if you want the test to pass. I had to invoke the following before running the tests. export STLPORT_PATH="c:/" export STLPORT_VERSION=4.5.3 export STLPORT_INCLUDE_DIRECTORY="c:/program files/Microsoft Visual Studio/vc98/include/stlport" my stlport install process created a special set of stlport header files in the msvc include directory. This is and altered version of the original ones. The original ones compiler ok but they have some switches set so that some inline code is not included and this makes the test builds fail at link time. The above variables communicate information to the msvc-stlport toolset on where to look for the stlport headers. Note that the documentation on msvc-stlport jam is somewhat out of date so that confuses this issue as well. Note that failures of other STLPort toolsets that depended upon vc6 may be related to this issue as well. Robert Ramey