Dear Boost programers:  I copied a piece simple Using Regular Expressions to Split a String  code from book(c++ cookbook) chapter 4 section 24, page 196-197, Example code 4.33  ---------------------------------------------------------------------  // Example 4-33. Using Boost's regular expressions  #include <iostream>  #include <string>  #include  int main() {  std::string s= "who,lives:in-a,pineapple under the sea?";  boost::regex re(",|:|-|\\s+"); // Create the reg exp  boost::sregex_token_iterator // Create an iterator using a  p(s.begin(), s.end(), re, -1); // sequence and that reg exp  boost::sregex_token_iterator end; // Crate an end_of_reg_exp  // marker  while (p != end)  std::cout << *p++ << '\n';  }  ------------------------  source code  http://examples.oreilly.com/9780596007614/

--------------------------------------------- g++ 4-33.cpp /tmp/ccx4JXEA.o: In function `boost::basic_regex >::assign(char const*, char const*, unsigned int)': 4-33.cpp:(.text._ZN5boost11basic_regexIcNS_12regex_traitsIcNS_16cpp_regex_traitsIcEEEEE6assignEPKcS7_j[boost::basic_regex >::assign(char const*, char const*, unsigned int)]+0x22): undefined reference to `boost::basic_regex >::do_assign(char const*, char const*, unsigned int)' /tmp/ccx4JXEA.o: In function `bool boost::regex_search<__gnu_cxx::__normal_iterator

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, 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, __gnu_cxx::__normal_iterator >)': 4-33.cpp:(.text._ZN5boost12regex_searchIN9__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_flagsESD_[bool boost::regex_search<__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, __gnu_cxx::__normal_iterator >)]+0x6c): undefined reference to `boost::re_detail::perl_matcher<__gnu_cxx::__normal_iterator >, std::allocator > > >, boost::regex_traits >::find()' /tmp/ccx4JXEA.o: In function `boost::re_detail::perl_matcher<__gnu_cxx::__normal_iterator >, std::allocator > > >, boost::regex_traits ::perl_matcher(__gnu_cxx::__normal_iterator

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Thanks your help a lot in advance, Eric