Hello, I am working on a little class using the property_tree lib. MSVC 7.1, boost 1.33.1 and latest property_tree cvs from sandbox. I have simply Pimpled the boost::property_tree::ptree class and implemented a templated get<> to extract values from a conf file ... I don't know if it is fair to attach files to the mail so I just paste the header... Here the interface: #ifndef xml_config_t_H_INCLUDED #define xml_config_t_H_INCLUDED //--------------------------------------------------------------------- #include <string> #include <memory> //--------------------------------------------------------------------- //just tags ... namespace all { namespace core{ namespace detail { struct xml_t{}; struct ini_t{}; } static const core::detail::xml_t xml = core::detail::xml_t(); static const core::detail::ini_t ini = core::detail::ini_t(); }} //--------------------------------------------------------------------- namespace all { namespace core{ //the implementation namespace detail{class xml_config_impl;} class xml_config_t; }} //--------------------------------------------------------------------- class all::core::xml_config_t { public: ///Constructor xml_config_t(); ~xml_config_t(); ///this one calls read_xml void load(core::detail::xml_t, const std::string&); ///this one calls read_ini void load(core::detail::ini_t, const std::string&); public: ///the template get method .. calls ptree::get<T> .... template <typename T> T get(const std::string&, const T& defval = T()) const; private: //pimpl idiom std::auto_ptrcore::detail::xml_config_impl impl; }; //--------------------------------------------------------------------------- #endif //xml_config_t_H_INCLUDED //--------------------------------------------------------------------------- The code compiles and it actually works ... that is fine. But the problem is that Compiling the class as a static lib, produces an huge library (~14 MB !!). I am compiling wiht /MT flag .. RTTI is off and there are just default settings ... Why such a huge library file? The templated method is defined for some builtin data types such as int, float, long ...etc ... Thanks for your attention ....