I see many compilation problems here in the list, so I hope you will forgive me adding to the clutter. Can someone tell me what I'm doing wrong or missing to get the following. When building Boost 1.33.0, the date_time, program_options and wave libraries fail to build. I am after the program_options in particular. My environment is intel_win32 running in the MSVC v6 IDE. The output from the build runs to 176Kb, but of the very many errors, the typical ones are: C:\Libraries\boost_1_33_0\libs\program_options\build\../src/options_description.cpp(378): error: too few arguments for class template "std::reverse_iterator" find(reverse_iterator<string::const_iterator>(line_end - 1), C:\Libraries\boost_1_33_0\libs\program_options\build\../src/variables_map.cpp(81): error: no instance of overloaded function "std::set<_K, _Pr, _A>::insert [with _K=std::string, _Pr=std::less<std::string>, _A=std::allocator<std::string>]" matches the argument list argument types are: (std::set<std::string, std::less<std::string>, std::allocator<std::string>>::iterator, std::set<std::string, std::less<std::string>, std::allocator<std::string>>::iterator) object type is: std::set<std::string, std::less<std::string>, std::allocator<std::string>> xm.m_final.insert(new_final.begin(), new_final.end()); ^ These recur many times in the program_option builds, plus things like: C:\Libraries\boost_1_33_0/boost/lexical_cast.hpp(156): error: no operator ">>" matches these operands operand types are: std::basic_stringstream<char, std::char_traits<char>, std::allocator<char>> >> boost::date_time::date_names_put<boost::gregorian::greg_facet_config, wchar_t, std::ostreambuf_iterator<wchar_t, std::char_traits<wchar_t>>>::string_type stream >> output && ^ detected during: instantiation of "bool={bool} boost::detail::lexical_stream<Target, Source>::operator>>(InputStreamable &) [with Target=boost::date_time::date_names_put<boost::gregorian::greg_facet_config, wchar_t={unsigned short}, std::ostreambuf_iterator<wchar_t={unsigned short}, std::char_traits<wchar_t={unsigned short}>>>::string_type, Source=boost::detail::array_to_pointer_decay<const wchar_t={unsigned short} *>::type={const wchar_t={unsigned short} *}, ... and so on to ... instantiation of "boost::date_time::all_date_names_put<Config, charT, OutputIterator>::all_date_names_put(const charT *const *, const charT *const *, const charT *const *, const charT *const *, const charT *const *, charT, boost::date_time::ymd_order_spec, boost::date_time::month_format_spec) [with Config=boost::gregorian::greg_facet_config, charT=wchar_t={unsigned short}, OutputIterator=std::ostreambuf_iterator<wchar_t={unsigned short}, std::char_traits<wchar_t={unsigned short}>>]" -- Rob Marsden Gistix (Northern) Limited