Dear Boost experts:   when I compile a program(some example code from c++ book) it contain #include #include and I got a lot compile error related about it on my g++ with boost 1.46.1 installed ------- ------- ----------------------------------------------------------------------------------------------------- eric@eric-laptop:~/cppcookbook/download/TESTDIR$ g++ -ltinyxml 14-3.cpp /tmp/cct65iz6.o: In function `unsigned short boost::date_time::month_str_to_ushortboost::gregorian::greg_month(std::basic_string const&)': 14-3.cpp:(.text._ZN5boost9date_time19month_str_to_ushortINS_9gregorian10greg_monthEEEtRKSs[unsigned short boost::date_time::month_str_to_ushortboost::gregorian::greg_month(std::basic_string const&)]+0x97): undefined reference to `boost::gregorian::greg_month::get_month_map_ptr()' /tmp/cct65iz6.o: In function `bool boost::regex_match<__gnu_cxx::__normal_iterator >, std::allocator > > >, char, boost::regex_traits >(__gnu_cxx::__normal_iterator >, __gnu_cxx::__normal_iterator >, boost::match_results<__gnu_cxx::__normal_iterator >, std::allocator > > > >&, boost::basic_regex > const&, boost::regex_constants::_match_flags)': 14-3.cpp:(.text._ZN5boost11regex_matchIN9__gnu_cxx17__normal_iteratorIPKcSsEESaINS_9sub_matchIS5_EEEcNS_12regex_traitsIcNS_16cpp_regex_traitsIcEEEEEEbT_SD_RNS_13match_resultsISD_T0_EERKNS_11basic_regexIT1_T2_EENS_15regex_constants12_match_flagsE[bool boost::regex_match<__gnu_cxx::__normal_iterator >, std::allocator > > >, char, boost::regex_traits >(__gnu_cxx::__normal_iterator >, __gnu_cxx::__normal_iterator >, boost::match_results<__gnu_cxx::__normal_iterator >, std::allocator > > > >&, boost::basic_regex > const&, boost::regex_constants::_match_flags)]+0x4c): undefined reference to `boost::re_detail::perl_matcher<__gnu_cxx::__normal_iterator >, std::allocator > > >, boost::regex_traits >::match()' /tmp/cct65iz6.o: In function `boost::basic_regex >::assign(char const*, char const*, unsigned int)': ------------------------------------------------------------------------------------------This is only front part of the whole errors------------------- these code is claimed worked on msvc++7.1 on window xp and you can download it from http://examples.oreilly.com/9780596007614/ 14-1.xml 14-2.h 14-3.cpp to test by yourself plz help and thanks a lot in advance, Eric(on g++ 4.5.2, linuxkernel 2.6.38-10)