Undefined symbols for architecture x86_64:
  "Db::verify(char const*, char const*, std::ostream*, unsigned int)", referenced from:
      CDBEnv::Verify(std::string, bool (*)(CDBEnv&, std::string)) in db.o
      CDBEnv::Salvage(std::string, bool, std::vector<std::pair<std::vector<unsigned char, std::allocator<unsigned char> >, std::vector<unsigned char, std::allocator<unsigned char> > >, std::allocator<std::pair<std::vector<unsigned char, std::allocator<unsigned char> >, std::vector<unsigned char, std::allocator<unsigned char> > > > >&) in db.o
  "boost::program_options::to_internal(std::string const&)", referenced from:
      boost::program_options::detail::basic_config_file_iterator<char>::getline(std::string&) in util.o
  "boost::program_options::detail::common_config_file_iterator::common_config_file_iterator(std::set<std::string, std::less<std::string>, std::allocator<std::string> > const&, bool)", referenced from:
      boost::program_options::detail::basic_config_file_iterator<char>::basic_config_file_iterator(std::istream&, std::set<std::string, std::less<std::string>, std::allocator<std::string> > const&, bool) in util.o