Hi, with the current cvs-version (7/23/2004) i can't build the thread library with stlport 4.5.3 and msvc60. I use the following bjam command: bjam "-sTOOLS=msvc-stlport" "-sSTLPORT_PATH=D:\develop\STLPort" "-sSTLPORT_VERSION=4.5.3" and get the following errortext: ...\boost-23072004\libs\thread\build\..\src\barrier.cpp(21) : error C2440: 'type cast' : 'char [22]' kann nicht in 'class _STL::invalid_argument' konvertiert werden Quelltyp konnte von keinem Konstruktor angenommen werden, oder die Ueberladungsaufloesung des Konstruktors ist mehrdeutig Sorry about the german error-text. it's something about: can't convert char[22] to 'class _STL::invalid_argument' I don't know that wrong about: throw std::invalid_argument("count cannot be zero."); because the StlPort defines invalid_argument as: class _STLP_CLASS_DECLSPEC invalid_argument : public logic_error { public: invalid_argument(const string& __arg) : logic_error(__arg) {} # ifdef _STLP_OWN_IOSTREAMS ~invalid_argument() _STLP_NOTHROW_INHERENTLY; # endif }; With the microsoft stl everything compile fine. (bjam "-sTOOLS=msvc") Sven