boost::regex problem!

Hi all!

libboost_regex1_36_0 is installed.

By compiling of code g++ gives some errors.

So can somebody help? please!

Code:


#include <iostream>
#include <boost/regex.hpp>

//using namespace std;

void print_captures(const std::string& regx, const std::string& text)
{
   boost::regex e(regx);
   boost::smatch what;
   std::cout << "Expression:  \"" << regx << "\"
";
   std::cout << "Text:        \"" << text << "\"
";
   if(boost::regex_match(text, what, e, boost::match_extra))
   {
      std::cout << "** Match found **
   Sub-Expressions:
";
   }
   else
   {
      std::cout << "** No Match found **
";
   }
}


int main() {
    print_captures("((:lower:]]+)|(:upper:]]+))+", "aBBcccDDDDDeeeeeeee");
    print_captures("(.*)bar|(.*)bah", "abcbar");
    print_captures("(.*)bar|(.*)bah", "abcbah");
    print_captures("^(?:(\\w+)|(?>\\W+))*$", "now is the time for all good men to come to the aid of the party");
    return 0;
}

Errors:


/tmp/cctoZPqS.o: In function `boost::basic_regex&lt;char, boost::regex_traits&lt;char, boost::cpp_regex_traits&lt;char&gt; &gt; &gt;::assign(char const*, char const*, unsigned int)':
BoostTest.cpp:(.text._ZN5boost11basic_regexIcNS_12regex_traitsIcNS_16cpp_regex_traitsIcEEEEE6assignEPKcS7_j[boost::basic_regex&lt;char, boost::regex_traits&lt;char, boost::cpp_regex_traits&lt;char&gt; &gt; &gt;::assign(char const*, char const*, unsigned int)]+0x22): undefined reference to `boost::basic_regex<char, boost::regex_traits<char, boost::cpp_regex_traits<char> > >::do_assign(char const*, char const*, unsigned int)'
/tmp/cctoZPqS.o: In function `boost::re_detail::perl_matcher&lt;__gnu_cxx::__normal_iterator&lt;char const*, std::basic_string&lt;char, std::char_traits&lt;char&gt;, std::allocator&lt;char&gt; &gt; &gt;, std::allocator&lt;boost::sub_match&lt;__gnu_cxx::__normal_iterator&lt;char const*, std::basic_string&lt;char, std::char_traits&lt;char&gt;, std::allocator&lt;char&gt; &gt; &gt; &gt; &gt;, boost::regex_traits&lt;char, boost::cpp_regex_traits&lt;char&gt; &gt; &gt;::perl_matcher(__gnu_cxx::__normal_iterator&lt;char const*, std::basic_string&lt;char, std::char_traits&lt;char&gt;, std::allocator&lt;char&gt; &gt; &gt;, __gnu_cxx::__normal_iterator&lt;char const*, std::basic_string&lt;char, std::char_traits&lt;char&gt;, std::allocator&lt;char&gt; &gt; &gt;, boost::match_results&lt;__gnu_cxx::__normal_iterator&lt;char const*, std::basic_string&lt;char, std::char_traits&lt;char&gt;, std::allocator&lt;char&gt; &gt; &gt;, std::allocator&lt;boost::sub_match&lt;__gnu_cxx::__normal_iterator&lt;char const*, std::basic_string&lt;char, std::char_traits&lt;char&gt;, std::allocator&lt;char&gt; &gt; &gt; &gt; &gt; &gt;&, boost::basic_regex&lt;char, boost::regex_traits&lt;char, boost::cpp_regex_traits&lt;char&gt; &gt; &gt; const&, boost::regex_constants::_match_flags, __gnu_cxx::__normal_iterator&lt;char const*, std::basic_string&lt;char, std::char_traits&lt;char&gt;, std::allocator&lt;char&gt; &gt; &gt;)':
BoostTest.cpp:(.text._ZN5boost9re_detail12perl_matcherIN9__gnu_cxx17__normal_iteratorIPKcSsEESaINS_9sub_matchIS6_EEENS_12regex_traitsIcNS_16cpp_regex_traitsIcEEEEEC1ES6_S6_RNS_13match_resultsIS6_S9_EERKNS_11basic_regexIcSD_EENS_15regex_constants12_match_flagsES6_[boost::re_detail::perl_matcher&lt;__gnu_cxx::__normal_iterator&lt;char const*, std::basic_string&lt;char, std::char_traits&lt;char&gt;, std::allocator&lt;char&gt; &gt; &gt;, std::allocator&lt;boost::sub_match&lt;__gnu_cxx::__normal_iterator&lt;char const*, std::basic_string&lt;char, std::char_traits&lt;char&gt;, std::allocator&lt;char&gt; &gt; &gt; &gt; &gt;, boost::regex_traits&lt;char, boost::cpp_regex_traits&lt;char&gt; &gt; &gt;::perl_matcher(__gnu_cxx::__normal_iterator&lt;char const*, std::basic_string&lt;char, std::char_traits&lt;char&gt;, std::allocator&lt;char&gt; &gt; &gt;, __gnu_cxx::__normal_iterator&lt;char const*, std::basic_string&lt;char, std::char_traits&lt;char&gt;, std::allocator&lt;char&gt; &gt; &gt;, boost::match_results&lt;__gnu_cxx::__normal_iterator&lt;char const*, std::basic_string&lt;char, std::char_traits&lt;char&gt;, std::allocator&lt;char&gt; &gt; &gt;, std::allocator&lt;boost::sub_match&lt;__gnu_cxx::__normal_iterator&lt;char const*, std::basic_string&lt;char, std::char_traits&lt;char&gt;, std::allocator&lt;char&gt; &gt; &gt; &gt; &gt; &gt;&, boost::basic_regex&lt;char, boost::regex_traits&lt;char, boost::cpp_regex_traits&lt;char&gt; &gt; &gt; const&, boost::regex_constants::_match_flags, __gnu_cxx::__normal_iterator&lt;char const*, std::basic_string&lt;char, std::char_traits&lt;char&gt;, std::allocator&lt;char&gt; &gt; &gt;)]+0xc2): undefined reference to `boost::re_detail::perl_matcher<__gnu_cxx::__normal_iterator<char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<boost::sub_match<__gnu_cxx::__normal_iterator<char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > > > >, boost::regex_traits<char, boost::cpp_regex_traits<char> > >::construct_init(boost::basic_regex<char, boost::regex_traits<char, boost::cpp_regex_traits<char> > > const&, boost::regex_constants::_match_flags)'
/tmp/cctoZPqS.o: In function `bool boost::regex_match&lt;__gnu_cxx::__normal_iterator&lt;char const*, std::basic_string&lt;char, std::char_traits&lt;char&gt;, std::allocator&lt;char&gt; &gt; &gt;, std::allocator&lt;boost::sub_match&lt;__gnu_cxx::__normal_iterator&lt;char const*, std::basic_string&lt;char, std::char_traits&lt;char&gt;, std::allocator&lt;char&gt; &gt; &gt; &gt; &gt;, char, boost::regex_traits&lt;char, boost::cpp_regex_traits&lt;char&gt; &gt; &gt;(__gnu_cxx::__normal_iterator&lt;char const*, std::basic_string&lt;char, std::char_traits&lt;char&gt;, std::allocator&lt;char&gt; &gt; &gt;, __gnu_cxx::__normal_iterator&lt;char const*, std::basic_string&lt;char, std::char_traits&lt;char&gt;, std::allocator&lt;char&gt; &gt; &gt;, boost::match_results&lt;__gnu_cxx::__normal_iterator&lt;char const*, std::basic_string&lt;char, std::char_traits&lt;char&gt;, std::allocator&lt;char&gt; &gt; &gt;, std::allocator&lt;boost::sub_match&lt;__gnu_cxx::__normal_iterator&lt;char const*, std::basic_string&lt;char, std::char_traits&lt;char&gt;, std::allocator&lt;char&gt; &gt; &gt; &gt; &gt; &gt;&, boost::basic_regex&lt;char, boost::regex_traits&lt;char, boost::cpp_regex_traits&lt;char&gt; &gt; &gt; const&, boost::regex_constants::_match_flags)':
BoostTest.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&lt;__gnu_cxx::__normal_iterator&lt;char const*, std::basic_string&lt;char, std::char_traits&lt;char&gt;, std::allocator&lt;char&gt; &gt; &gt;, std::allocator&lt;boost::sub_match&lt;__gnu_cxx::__normal_iterator&lt;char const*, std::basic_string&lt;char, std::char_traits&lt;char&gt;, std::allocator&lt;char&gt; &gt; &gt; &gt; &gt;, char, boost::regex_traits&lt;char, boost::cpp_regex_traits&lt;char&gt; &gt; &gt;(__gnu_cxx::__normal_iterator&lt;char const*, std::basic_string&lt;char, std::char_traits&lt;char&gt;, std::allocator&lt;char&gt; &gt; &gt;, __gnu_cxx::__normal_iterator&lt;char const*, std::basic_string&lt;char, std::char_traits&lt;char&gt;, std::allocator&lt;char&gt; &gt; &gt;, boost::match_results&lt;__gnu_cxx::__normal_iterator&lt;char const*, std::basic_string&lt;char, std::char_traits&lt;char&gt;, std::allocator&lt;char&gt; &gt; &gt;, std::allocator&lt;boost::sub_match&lt;__gnu_cxx::__normal_iterator&lt;char const*, std::basic_string&lt;char, std::char_traits&lt;char&gt;, std::allocator&lt;char&gt; &gt; &gt; &gt; &gt; &gt;&, boost::basic_regex&lt;char, boost::regex_traits&lt;char, boost::cpp_regex_traits&lt;char&gt; &gt; &gt; const&, boost::regex_constants::_match_flags)]+0x47): undefined reference to `boost::re_detail::perl_matcher<__gnu_cxx::__normal_iterator<char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<boost::sub_match<__gnu_cxx::__normal_iterator<char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > > > >, boost::regex_traits<char, boost::cpp_regex_traits<char> > >::match()'
/tmp/cctoZPqS.o: In function `boost::cpp_regex_traits&lt;char&gt;::transform(char const*, char const*) const':
BoostTest.cpp:(.text._ZNK5boost16cpp_regex_traitsIcE9transformEPKcS3_[boost::cpp_regex_traits&lt;char&gt;::transform(char const*, char const*) const]+0x30): undefined reference to `boost::re_detail::cpp_regex_traits_implementation<char>::transform(char const*, char const*) const'
/tmp/cctoZPqS.o: In function `boost::cpp_regex_traits&lt;char&gt;::transform_primary(char const*, char const*) const':
BoostTest.cpp:(.text._ZNK5boost16cpp_regex_traitsIcE17transform_primaryEPKcS3_[boost::cpp_regex_traits&lt;char&gt;::transform_primary(char const*, char const*) const]+0x30): undefined reference to `boost::re_detail::cpp_regex_traits_implementation<char>::transform_primary(char const*, char const*) const'
/tmp/cctoZPqS.o: In function `boost::re_detail::perl_matcher&lt;__gnu_cxx::__normal_iterator&lt;char const*, std::basic_string&lt;char, std::char_traits&lt;char&gt;, std::allocator&lt;char&gt; &gt; &gt;, std::allocator&lt;boost::sub_match&lt;__gnu_cxx::__normal_iterator&lt;char const*, std::basic_string&lt;char, std::char_traits&lt;char&gt;, std::allocator&lt;char&gt; &gt; &gt; &gt; &gt;, boost::regex_traits&lt;char, boost::cpp_regex_traits&lt;char&gt; &gt; &gt;::match_match()':
BoostTest.cpp:(.text._ZN5boost9re_detail12perl_matcherIN9__gnu_cxx17__normal_iteratorIPKcSsEESaINS_9sub_matchIS6_EEENS_12regex_traitsIcNS_16cpp_regex_traitsIcEEEEE11match_matchEv[boost::re_detail::perl_matcher&lt;__gnu_cxx::__normal_iterator&lt;char const*, std::basic_string&lt;char, std::char_traits&lt;char&gt;, std::allocator&lt;char&gt; &gt; &gt;, std::allocator&lt;boost::sub_match&lt;__gnu_cxx::__normal_iterator&lt;char const*, std::basic_string&lt;char, std::char_traits&lt;char&gt;, std::allocator&lt;char&gt; &gt; &gt; &gt; &gt;, boost::regex_traits&lt;char, boost::cpp_regex_traits&lt;char&gt; &gt; &gt;::match_match()]+0x172): undefined reference to `boost::match_results<__gnu_cxx::__normal_iterator<char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<boost::sub_match<__gnu_cxx::__normal_iterator<char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > > > > >::maybe_assign(boost::match_results<__gnu_cxx::__normal_iterator<char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<boost::sub_match<__gnu_cxx::__normal_iterator<char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > > > > > const&)'
/tmp/cctoZPqS.o: In function `boost::re_detail::cpp_regex_traits_implementation&lt;char&gt;::error_string(boost::regex_constants::error_type) const':
BoostTest.cpp:(.text._ZNK5boost9re_detail31cpp_regex_traits_implementationIcE12error_stringENS_15regex_constants10error_typeE[boost::re_detail::cpp_regex_traits_implementation&lt;char&gt;::error_string(boost::regex_constants::error_type) const]+0x9b): undefined reference to `boost::re_detail::get_default_error_string(boost::regex_constants::error_type)'
BoostTest.cpp:(.text._ZNK5boost9re_detail31cpp_regex_traits_implementationIcE12error_stringENS_15regex_constants10error_typeE[boost::re_detail::cpp_regex_traits_implementation<char>::error_string(boost::regex_constants::error_type) const]+0x140): undefined reference to `boost::re_detail::get_default_error_string(boost::regex_constants::error_type)'
/tmp/cctoZPqS.o: In function `void boost::re_detail::raise_error<boost::regex_traits_wrapper<boost::regex_traits<char, boost::cpp_regex_traits<char> > > >(boost::regex_traits_wrapper<boost::regex_traits<char, boost::cpp_regex_traits<char> > > const&, boost::regex_constants::error_type)':
BoostTest.cpp:(.text._ZN5boost9re_detail11raise_errorINS_20regex_traits_wrapperINS_12regex_traitsIcNS_16cpp_regex_traitsIcEEEEEEEEvRKT_NS_15regex_constants10error_typeE[void boost::re_detail::raise_error<boost::regex_traits_wrapper<boost::regex_traits<char, boost::cpp_regex_traits<char> > > >(boost::regex_traits_wrapper<boost::regex_traits<char, boost::cpp_regex_traits<char> > > const&, boost::regex_constants::error_type)]+0x72): undefined reference to `boost::re_detail::raise_runtime_error(std::runtime_error const&)'
/tmp/cctoZPqS.o: In function `boost::re_detail::perl_matcher<__gnu_cxx::__normal_iterator<char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<boost::sub_match<__gnu_cxx::__normal_iterator<char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > > > >, boost::regex_traits<char, boost::cpp_regex_traits<char> > >::extend_stack()':
BoostTest.cpp:(.text._ZN5boost9re_detail12perl_matcherIN9__gnu_cxx17__normal_iteratorIPKcSsEESaINS_9sub_matchIS6_EEENS_12regex_traitsIcNS_16cpp_regex_traitsIcEEEEE12extend_stackEv[boost::re_detail::perl_matcher<__gnu_cxx::__normal_iterator<char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<boost::sub_match<__gnu_cxx::__normal_iterator<char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > > > >, boost::regex_traits<char, boost::cpp_regex_traits<char> > >::extend_stack()]+0x20): undefined reference to `boost::re_detail::get_mem_block()'
/tmp/cctoZPqS.o: In function `boost::re_detail::perl_matcher<__gnu_cxx::__normal_iterator<char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<boost::sub_match<__gnu_cxx::__normal_iterator<char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > > > >, boost::regex_traits<char, boost::cpp_regex_traits<char> > >::unwind_extra_block(bool)':
BoostTest.cpp:(.text._ZN5boost9re_detail12perl_matcherIN9__gnu_cxx17__normal_iteratorIPKcSsEESaINS_9sub_matchIS6_EEENS_12regex_traitsIcNS_16cpp_regex_traitsIcEEEEE18unwind_extra_blockEb[boost::re_detail::perl_matcher<__gnu_cxx::__normal_iterator<char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<boost::sub_match<__gnu_cxx::__normal_iterator<char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > > > >, boost::regex_traits<char, boost::cpp_regex_traits<char> > >::unwind_extra_block(bool)]+0x48): undefined reference to `boost::re_detail::put_mem_block(void*)'
collect2: ld returned 1 exit status

Hi,

it looks like you forgot to tell the linker to link against boost regexp libraries. Try to add -lboost_regex to the linker.

If this doesn’t work you should also post you command which you are using to compile the application.

Hope this helps