Hi I've been trying to use boost program options and heres the linker error i get. Compling with gcc mingW 4.1 . C:/Boost/lib/libboost_program_options-mgw41-1_34.a(convert.o):convert.cpp:(.text+0x8f): undefined reference to `std::codecvt::codecvt(unsigned int)' C:/Boost/lib/libboost_program_options-mgw41-1_34.a(convert.o):convert.cpp:(.text+0xb7): undefined reference to `std::codecvt::~codecvt()' C:/Boost/lib/libboost_program_options-mgw41-1_34.a(convert.o):convert.cpp:(.text+0x1b1): undefined reference to `std::codecvt::id' C:/Boost/lib/libboost_program_options-mgw41-1_34.a(convert.o):convert.cpp:(.text+0x2e5): undefined reference to `std::codecvt::id' C:/Boost/lib/libboost_program_options-mgw41-1_34.a(convert.o):convert.cpp:(.text$_ZN5boost6detail7convertIwcNS_3_bi6bind_tINSt12codecvt_base6resultENS_4_mfi4cmf7IS5_St23__codecvt_abstract_baseIwciERiPKcSC_RSC_PwSE_RSE_EENS2_5list8INS2_5valueIPKSt7codecvtIwciEEEPFNS_3argILi1EEEvEPFNSO_ILi2EEEvEPFNSO_ILi3EEEvEPFNSO_ILi4EEEvEPFNSO_ILi5EEEvEPFNSO_ILi6EEEvEPFNSO_ILi7EEEvEEEEEEESbIT_St11char_traitsIS1C_ESaIS1C_EERKSbIT0_S1D_IS1H_ESaIS1H_EET1_[std::basic_string, std::allocator > boost::detail::convert, int&, char const*, char const*, char const*&, wchar_t*, wchar_t*, wchar_t*&>, boost::_bi::list8 const*>, boost::arg<1> (*)(), boost::arg<2> (*)(), boost::arg<3> (*)(), boost::arg<4> (*)(), boost::arg<5> (*)(), boost::arg<6> (*)(), boost::arg<7> (*)()> > >(std::basic_string const&, boost::_bi::bind_t, int&, char const*, char const*, char const*&, wchar_t*, wchar_t*, wchar_t*&>, boost::_bi::list8 const*>, boost::arg<1> (*)(), boost::arg<2> (*)(), boost::arg<3> (*)(), boost::arg<4> (*)(), boost::arg<5> (*)(), boost::arg<6> (*)(), boost::arg<7> (*)()> >)]+0x82): undefined reference to `std::basic_string, std::allocator >::_S_construct(unsigned int, wchar_t, std::allocator const&)' C:/Boost/lib/libboost_program_options-mgw41-1_34.a(convert.o):convert.cpp:(.text$_ZN5boost6detail7convertIwcNS_3_bi6bind_tINSt12codecvt_base6resultENS_4_mfi4cmf7IS5_St23__codecvt_abstract_baseIwciERiPKcSC_RSC_PwSE_RSE_EENS2_5list8INS2_5valueIPKSt7codecvtIwciEEEPFNS_3argILi1EEEvEPFNSO_ILi2EEEvEPFNSO_ILi3EEEvEPFNSO_ILi4EEEvEPFNSO_ILi5EEEvEPFNSO_ILi6EEEvEPFNSO_ILi7EEEvEEEEEEESbIT_St11char_traitsIS1C_ESaIS1C_EERKSbIT0_S1D_IS1H_ESaIS1H_EET1_[std::basic_string, std::allocator > boost::detail::convert, int&, char const*, char const*, char const*&, wchar_t*, wchar_t*, wchar_t*&>, boost::_bi::list8 const*>, boost::arg<1> (*)(), boost::arg<2> (*)(), boost::arg<3> (*)(), boost::arg<4> (*)(), boost::arg<5> (*)(), boost::arg<6> (*)(), boost::arg<7> (*)()> > >(std::basic_string const&, boost::_bi::bind_t, int&, char const*, char const*, char const*&, wchar_t*, wchar_t*, wchar_t*&>, boost::_bi::list8 const*>, boost::arg<1> (*)(), boost::arg<2> (*)(), boost::arg<3> (*)(), boost::arg<4> (*)(), boost::arg<5> (*)(), boost::arg<6> (*)(), boost::arg<7> (*)()> >)]+0x152): undefined reference to `std::basic_string, std::allocator >::replace(unsigned int, unsigned int, wchar_t const*, unsigned int)' C:/Boost/lib/libboost_program_options-mgw41-1_34.a(convert.o):convert.cpp:(.text$_ZN5boost6detail7convertIwcNS_3_bi6bind_tINSt12codecvt_base6resultENS_4_mfi4cmf7IS5_St23__codecvt_abstract_baseIwciERiPKcSC_RSC_PwSE_RSE_EENS2_5list8INS2_5valueIPKSt7codecvtIwciEEEPFNS_3argILi1EEEvEPFNSO_ILi2EEEvEPFNSO_ILi3EEEvEPFNSO_ILi4EEEvEPFNSO_ILi5EEEvEPFNSO_ILi6EEEvEPFNSO_ILi7EEEvEEEEEEESbIT_St11char_traitsIS1C_ESaIS1C_EERKSbIT0_S1D_IS1H_ESaIS1H_EET1_[std::basic_string, std::allocator > boost::detail::convert, int&, char const*, char const*, char const*&, wchar_t*, wchar_t*, wchar_t*&>, boost::_bi::list8 const*>, boost::arg<1> (*)(), boost::arg<2> (*)(), boost::arg<3> (*)(), boost::arg<4> (*)(), boost::arg<5> (*)(), boost::arg<6> (*)(), boost::arg<7> (*)()> > >(std::basic_string const&, boost::_bi::bind_t, int&, char const*, char const*, char const*&, wchar_t*, wchar_t*, wchar_t*&>, boost::_bi::list8 const*>, boost::arg<1> (*)(), boost::arg<2> (*)(), boost::arg<3> (*)(), boost::arg<4> (*)(), boost::arg<5> (*)(), boost::arg<6> (*)(), boost::arg<7> (*)()> >)]+0x424): undefined reference to `std::basic_string, std::allocator

::_Rep::_M_destroy(std::allocator const&)' C:/Boost/lib/libboost_program_options-mgw41-1_34.a(value_semantic.o):value_semantic.cpp:(.text+0x19f): undefined reference to `std::basic_string, std::allocator ::_Rep::_M_destroy(std::allocator const&)' C:/Boost/lib/libboost_program_options-mgw41-1_34.a(value_semantic.o):value_semantic.cpp:(.text+0x28b): undefined reference to `std::basic_string, std::allocator ::basic_string(std::basic_string, std::allocator > const&)' C:/Boost/lib/libboost_program_options-mgw41-1_34.a(value_semantic.o):value_semantic.cpp:(.text+0x2d2): undefined reference to `std::basic_string, std::allocator ::_Rep::_M_destroy(std::allocator const&)' C:/Boost/lib/libboost_program_options-mgw41-1_34.a(value_semantic.o):value_semantic.cpp:(.text+0x367): undefined reference to `std::basic_string, std::allocator ::_Rep::_M_destroy(std::allocator const&)' C:/Boost/lib/libboost_program_options-mgw41-1_34.a(value_semantic.o):value_semantic.cpp:(.text+0x40b): undefined reference to `std::basic_string, std::allocator ::basic_string(std::basic_string, std::allocator > const&)' C:/Boost/lib/libboost_program_options-mgw41-1_34.a(value_semantic.o):value_semantic.cpp:(.text+0x44c): undefined reference to `std::basic_string, std::allocator ::_Rep::_M_destroy(std::allocator const&)' C:/Boost/lib/libboost_program_options-mgw41-1_34.a(value_semantic.o):value_semantic.cpp:(.text+0x526): undefined reference to `std::basic_string, std::allocator ::_Rep::_M_destroy(std::allocator const&)' C:/Boost/lib/libboost_program_options-mgw41-1_34.a(value_semantic.o):value_semantic.cpp:(.text+0x57e): undefined reference to `std::basic_string, std::allocator ::_Rep::_M_destroy(std::allocator const&)' C:/Boost/lib/libboost_program_options-mgw41-1_34.a(value_semantic.o):value_semantic.cpp:(.text+0x5ed): undefined reference to `std::basic_string, std::allocator ::_Rep::_M_destroy(std::allocator const&)' C:/Boost/lib/libboost_program_options-mgw41-1_34.a(value_semantic.o):value_semantic.cpp:(.text+0x10bb): undefined reference to `std::basic_string, std::allocator ::_Rep::_M_destroy(std::allocator const&)' C:/Boost/lib/libboost_program_options-mgw41-1_34.a(value_semantic.o):value_semantic.cpp:(.text+0x128f): more undefined references to `std::basic_string, std::allocator ::_Rep::_M_destroy(std::allocator const&)' follow C:/Boost/lib/libboost_program_options-mgw41-1_34.a(value_semantic.o):value_semantic.cpp:(.text+0x215f): undefined reference to `std::basic_string, std::allocator ::basic_string(std::basic_string, std::allocator > const&)' C:/Boost/lib/libboost_program_options-mgw41-1_34.a(value_semantic.o):value_semantic.cpp:(.text+0x21c5): undefined reference to `std::basic_string, std::allocator ::basic_string(std::basic_string, std::allocator > const&)' C:/Boost/lib/libboost_program_options-mgw41-1_34.a(value_semantic.o):value_semantic.cpp:(.text+0x2299): undefined reference to `std::basic_string, std::allocator ::basic_string(std::basic_string, std::allocator > const&, unsigned int, unsigned int)' C:/Boost/lib/libboost_program_options-mgw41-1_34.a(value_semantic.o):value_semantic.cpp:(.text+0x22cb): undefined reference to `std::basic_string, std::allocator ::basic_string(std::basic_string, std::allocator > const&)' C:/Boost/lib/libboost_program_options-mgw41-1_34.a(value_semantic.o):value_semantic.cpp:(.text+0x234a): undefined reference to `std::basic_string, std::allocator ::_Rep::_M_destroy(std::allocator const&)' C:/Boost/lib/libboost_program_options-mgw41-1_34.a(value_semantic.o):value_semantic.cpp:(.text+0x2367): undefined reference to `std::basic_string, std::allocator >::_M_leak_hard()' C:/Boost/lib/libboost_program_options-mgw41-1_34.a(value_semantic.o):value_semantic.cpp:(.text+0x23b3): undefined reference to `std::basic_string, std::allocator >::_M_leak_hard()' C:/Boost/lib/libboost_program_options-mgw41-1_34.a(value_semantic.o):value_semantic.cpp:(.text+0x23cf): undefined reference to `std::basic_string, std::allocator ::_Rep::_M_destroy(std::allocator const&)' C:/Boost/lib/libboost_program_options-mgw41-1_34.a(value_semantic.o):value_semantic.cpp:(.text+0x23eb): undefined reference to `std::basic_string, std::allocator >::_M_leak_hard()' C:/Boost/lib/libboost_program_options-mgw41-1_34.a(value_semantic.o):value_semantic.cpp:(.text+0x2406): undefined reference to `std::basic_string, std::allocator >::_M_leak_hard()' C:/Boost/lib/libboost_program_options-mgw41-1_34.a(value_semantic.o):value_semantic.cpp:(.text+0x24da): undefined reference to `std::basic_string, std::allocator ::_Rep::_M_destroy(std::allocator const&)' C:/Boost/lib/libboost_program_options-mgw41-1_34.a(value_semantic.o):value_semantic.cpp:(.text+0x2519): undefined reference to `std::basic_string, std::allocator ::_Rep::_M_destroy(std::allocator const&)' C:/Boost/lib/libboost_program_options-mgw41-1_34.a(value_semantic.o):value_semantic.cpp:(.text+0x2a4a): undefined reference to `std::basic_string, std::allocator ::basic_string(std::basic_string, std::allocator > const&)' C:/Boost/lib/libboost_program_options-mgw41-1_34.a(value_semantic.o):value_semantic.cpp:(.text+0x2a8f): undefined reference to `std::basic_string, std::allocator >::_M_leak_hard()' C:/Boost/lib/libboost_program_options-mgw41-1_34.a(value_semantic.o):value_semantic.cpp:(.text+0x2b07): undefined reference to `std::basic_string, std::allocator >::_M_leak_hard()' C:/Boost/lib/libboost_program_options-mgw41-1_34.a(value_semantic.o):value_semantic.cpp:(.text+0x2b2b): undefined reference to `std::basic_string, std::allocator >::compare(wchar_t const*) const' C:/Boost/lib/libboost_program_options-mgw41-1_34.a(value_semantic.o):value_semantic.cpp:(.text+0x2be6): undefined reference to `std::basic_string, std::allocator >::compare(wchar_t const*) const' C:/Boost/lib/libboost_program_options-mgw41-1_34.a(value_semantic.o):value_semantic.cpp:(.text+0x2c02): undefined reference to `std::basic_string, std::allocator >::compare(wchar_t const*) const' C:/Boost/lib/libboost_program_options-mgw41-1_34.a(value_semantic.o):value_semantic.cpp:(.text+0x2c1e): undefined reference to `std::basic_string, std::allocator >::compare(wchar_t const*) const' C:/Boost/lib/libboost_program_options-mgw41-1_34.a(value_semantic.o):value_semantic.cpp:(.text+0x2c41): undefined reference to `std::basic_string, std::allocator >::compare(wchar_t const*) const' C:/Boost/lib/libboost_program_options-mgw41-1_34.a(value_semantic.o):value_semantic.cpp:(.text+0x2c60): more undefined references to `std::basic_string, std::allocator >::compare(wchar_t const*) const' follow C:/Boost/lib/libboost_program_options-mgw41-1_34.a(value_semantic.o):value_semantic.cpp:(.text+0x2ccf): undefined reference to `std::basic_string, std::allocator ::_Rep::_M_destroy(std::allocator const&)' C:/Boost/lib/libboost_program_options-mgw41-1_34.a(value_semantic.o):value_semantic.cpp:(.text+0x2db2): undefined reference to `std::basic_string, std::allocator >::compare(wchar_t const*) const' C:/Boost/lib/libboost_program_options-mgw41-1_34.a(value_semantic.o):value_semantic.cpp:(.text+0x2dce): undefined reference to `std::basic_string, std::allocator >::compare(wchar_t const*) const' C:/Boost/lib/libboost_program_options-mgw41-1_34.a(value_semantic.o):value_semantic.cpp:(.text+0x2f50): undefined reference to `std::basic_string, std::allocator ::_Rep::_M_destroy(std::allocator const&)' C:/Boost/lib/libboost_program_options-mgw41-1_34.a(value_semantic.o):value_semantic.cpp:(.text$_ZNK5boost3any6holderISbIwSt11char_traitsIwESaIwEEE5cloneEv[boost::any::holder, std::allocator > >::clone() const]+0x67): undefined reference to `std::basic_string, std::allocator ::basic_string(std::basic_string, std::allocator > const&)' C:/Boost/lib/libboost_program_options-mgw41-1_34.a(value_semantic.o):value_semantic.cpp:(.text$_ZN5boost3any6holderISbIwSt11char_traitsIwESaIwEEED0Ev[boost::any::holder, std::allocator > >::~holder()]+0x93): undefined reference to `std::basic_string, std::allocator ::_Rep::_M_destroy(std::allocator const&)' C:/Boost/lib/libboost_program_options-mgw41-1_34.a(value_semantic.o):value_semantic.cpp:(.text$_ZN5boost3any6holderISbIwSt11char_traitsIwESaIwEEED1Ev[boost::any::holder, std::allocator > >::~holder()]+0x8b): undefined reference to `std::basic_string, std::allocator ::_Rep::_M_destroy(std::allocator const&)' C:/Boost/lib/libboost_program_options-mgw41-1_34.a(value_semantic.o):value_semantic.cpp:(.text$_ZNSt6vectorISbIwSt11char_traitsIwESaIwEESaIS3_EE13_M_insert_auxEN9__gnu_cxx17__normal_iteratorIPS3_S5_EERKS3_[std::vector, std::allocator >, std::allocator, std::allocator > > ::_M_insert_aux(__gnu_cxx::__normal_iterator, std::allocator >*, std::vector, std::allocator >, std::allocator, std::allocator > > > >, std::basic_string, std::allocator > const&)]+0x65): undefined reference to `std::basic_string, std::allocator >::basic_string(std::basic_string, std::allocator > const&)' C:/Boost/lib/libboost_program_options-mgw41-1_34.a(value_semantic.o):value_semantic.cpp:(.text$_ZNSt6vectorISbIwSt11char_traitsIwESaIwEESaIS3_EE13_M_insert_auxEN9__gnu_cxx17__normal_iteratorIPS3_S5_EERKS3_[std::vector, std::allocator >, std::allocator, std::allocator > > ::_M_insert_aux(__gnu_cxx::__normal_iterator, std::allocator >*, std::vector, std::allocator >, std::allocator, std::allocator > > > >, std::basic_string, std::allocator > const&)]+0x85): undefined reference to `std::basic_string, std::allocator >::basic_string(std::basic_string, std::allocator > const&)' C:/Boost/lib/libboost_program_options-mgw41-1_34.a(value_semantic.o):value_semantic.cpp:(.text$_ZNSt6vectorISbIwSt11char_traitsIwESaIwEESaIS3_EE13_M_insert_auxEN9__gnu_cxx17__normal_iteratorIPS3_S5_EERKS3_[std::vector, std::allocator >, std::allocator, std::allocator > > ::_M_insert_aux(__gnu_cxx::__normal_iterator, std::allocator >*, std::vector, std::allocator >, std::allocator, std::allocator > > > >, std::basic_string, std::allocator > const&)]+0xc2): undefined reference to `std::basic_string, std::allocator >::assign(std::basic_string, std::allocator > const&)' C:/Boost/lib/libboost_program_options-mgw41-1_34.a(value_semantic.o):value_semantic.cpp:(.text$_ZNSt6vectorISbIwSt11char_traitsIwESaIwEESaIS3_EE13_M_insert_auxEN9__gnu_cxx17__normal_iteratorIPS3_S5_EERKS3_[std::vector, std::allocator >, std::allocator, std::allocator > > ::_M_insert_aux(__gnu_cxx::__normal_iterator, std::allocator >*, std::vector, std::allocator >, std::allocator, std::allocator > > > >, std::basic_string, std::allocator > const&)]+0xec): undefined reference to `std::basic_string, std::allocator >::assign(std::basic_string, std::allocator > const&)' C:/Boost/lib/libboost_program_options-mgw41-1_34.a(value_semantic.o):value_semantic.cpp:(.text$_ZNSt6vectorISbIwSt11char_traitsIwESaIwEESaIS3_EE13_M_insert_auxEN9__gnu_cxx17__normal_iteratorIPS3_S5_EERKS3_[std::vector, std::allocator >, std::allocator, std::allocator > > ::_M_insert_aux(__gnu_cxx::__normal_iterator, std::allocator >*, std::vector, std::allocator >, std::allocator, std::allocator > > > >, std::basic_string, std::allocator > const&)]+0x1d4): undefined reference to `std::basic_string, std::allocator >::basic_string(std::basic_string, std::allocator > const&)' C:/Boost/lib/libboost_program_options-mgw41-1_34.a(value_semantic.o):value_semantic.cpp:(.text$_ZNSt6vectorISbIwSt11char_traitsIwESaIwEESaIS3_EE13_M_insert_auxEN9__gnu_cxx17__normal_iteratorIPS3_S5_EERKS3_[std::vector, std::allocator >, std::allocator, std::allocator > > ::_M_insert_aux(__gnu_cxx::__normal_iterator, std::allocator >*, std::vector, std::allocator >, std::allocator, std::allocator > > > >, std::basic_string, std::allocator > const&)]+0x21a): undefined reference to `std::basic_string, std::allocator >::basic_string(std::basic_string, std::allocator > const&)' C:/Boost/lib/libboost_program_options-mgw41-1_34.a(value_semantic.o):value_semantic.cpp:(.text$_ZNSt6vectorISbIwSt11char_traitsIwESaIwEESaIS3_EE13_M_insert_auxEN9__gnu_cxx17__normal_iteratorIPS3_S5_EERKS3_[std::vector, std::allocator >, std::allocator, std::allocator > > ::_M_insert_aux(__gnu_cxx::__normal_iterator, std::allocator >*, std::vector, std::allocator >, std::allocator, std::allocator > > > >, std::basic_string, std::allocator > const&)]+0x27d): undefined reference to `std::basic_string, std::allocator >::basic_string(std::basic_string, std::allocator > const&)' C:/Boost/lib/libboost_program_options-mgw41-1_34.a(value_semantic.o):value_semantic.cpp:(.text$_ZNSt6vectorISbIwSt11char_traitsIwESaIwEESaIS3_EE13_M_insert_auxEN9__gnu_cxx17__normal_iteratorIPS3_S5_EERKS3_[std::vector, std::allocator >, std::allocator, std::allocator > > ::_M_insert_aux(__gnu_cxx::__normal_iterator, std::allocator >*, std::vector, std::allocator >, std::allocator, std::allocator > > > >, std::basic_string, std::allocator > const&)]+0x302): undefined reference to `std::basic_string, std::allocator >::_Rep::_M_destroy(std::allocator const&)' C:/Boost/lib/libboost_program_options-mgw41-1_34.a(value_semantic.o):value_semantic.cpp:(.text$_ZNSt6vectorISbIwSt11char_traitsIwESaIwEESaIS3_EE13_M_insert_auxEN9__gnu_cxx17__normal_iteratorIPS3_S5_EERKS3_[std::vector, std::allocator >, std::allocator, std::allocator > > ::_M_insert_aux(__gnu_cxx::__normal_iterator, std::allocator >*, std::vector, std::allocator >, std::allocator, std::allocator > > > >, std::basic_string, std::allocator > const&)]+0x35a): undefined reference to `std::basic_string, std::allocator >::_Rep::_M_destroy(std::allocator const&)' C:/Boost/lib/libboost_program_options-mgw41-1_34.a(value_semantic.o):value_semantic.cpp:(.text$_ZNSt6vectorISbIwSt11char_traitsIwESaIwEESaIS3_EE13_M_insert_auxEN9__gnu_cxx17__normal_iteratorIPS3_S5_EERKS3_[std::vector, std::allocator >, std::allocator, std::allocator > > ::_M_insert_aux(__gnu_cxx::__normal_iterator, std::allocator >*, std::vector, std::allocator >, std::allocator, std::allocator > > > >, std::basic_string, std::allocator > const&)]+0x48a): undefined reference to `std::basic_string, std::allocator >::_Rep::_M_destroy(std::allocator const&)' C:/Boost/lib/libboost_program_options-mgw41-1_34.a(value_semantic.o):value_semantic.cpp:(.text$_ZNSt6vectorISbIwSt11char_traitsIwESaIwEESaIS3_EE13_M_insert_auxEN9__gnu_cxx17__normal_iteratorIPS3_S5_EERKS3_[std::vector, std::allocator >, std::allocator, std::allocator > > ::_M_insert_aux(__gnu_cxx::__normal_iterator, std::allocator >*, std::vector, std::allocator >, std::allocator, std::allocator > > > >, std::basic_string, std::allocator > const&)]+0x4fc): undefined reference to `std::basic_string, std::allocator >::_Rep::_M_destroy(std::allocator const&)' C:/Boost/lib/libboost_program_options-mgw41-1_34.a(value_semantic.o):value_semantic.cpp:(.text$_ZNSt6vectorISbIwSt11char_traitsIwESaIwEESaIS3_EE13_M_insert_auxEN9__gnu_cxx17__normal_iteratorIPS3_S5_EERKS3_[std::vector, std::allocator >, std::allocator, std::allocator > > ::_M_insert_aux(__gnu_cxx::__normal_iterator, std::allocator >*, std::vector, std::allocator >, std::allocator, std::allocator > > > >, std::basic_string, std::allocator > const&)]+0x589): undefined reference to `std::basic_string, std::allocator >::_Rep::_M_destroy(std::allocator const&)' C:/Boost/lib/libboost_program_options-mgw41-1_34.a(value_semantic.o):value_semantic.cpp:(.text$_ZNSt6vectorISbIwSt11char_traitsIwESaIwEESaIS3_EE13_M_insert_auxEN9__gnu_cxx17__normal_iteratorIPS3_S5_EERKS3_[std::vector, std::allocator >, std::allocator, std::allocator > > ::_M_insert_aux(__gnu_cxx::__normal_iterator, std::allocator >*, std::vector, std::allocator >, std::allocator, std::allocator > > > >, std::basic_string, std::allocator > const&)]+0x627): more undefined references to `std::basic_string, std::allocator >::_Rep::_M_destroy(std::allocator const&)' follow C:/Boost/lib/libboost_program_options-mgw41-1_34.a(value_semantic.o):value_semantic.cpp:(.text$_ZN5boost15program_options10validators17get_single_stringIwEERKSbIT_St11char_traitsIS3_ESaIS3_EERKSt6vectorIS7_SaIS7_EEb[std::basic_string, std::allocator > const& boost::program_options::validators::get_single_string(std::vector, std::allocator >, std::allocator, std::allocator > > > const&, bool)]+0x19d): undefined reference to `std::basic_string, std::allocator >::_S_construct(unsigned int, wchar_t, std::allocator const&)' C:/Boost/lib/libboost_program_options-mgw41-1_34.a(utf8_codecvt_facet.o):utf8_codecvt_facet.cpp:(.text$_ZN5boost15program_options6detail18utf8_codecvt_facetD0Ev[boost::program_options::detail::utf8_codecvt_facet::~utf8_codecvt_facet()]+0x12): undefined reference to `std::codecvt::~codecvt()' C:/Boost/lib/libboost_program_options-mgw41-1_34.a(utf8_codecvt_facet.o):utf8_codecvt_facet.cpp:(.text$_ZN5boost15program_options6detail18utf8_codecvt_facetD1Ev[boost::program_options::detail::utf8_codecvt_facet::~utf8_codecvt_facet()]+0xe): undefined reference to `std::codecvt::~codecvt()' C:/Boost/lib/libboost_program_options-mgw41-1_34.a(utf8_codecvt_facet.o):utf8_codecvt_facet.cpp:(.rdata$_ZTVN5boost15program_options6detail18utf8_codecvt_facetE[vtable for boost::program_options::detail::utf8_codecvt_facet]+0x24): undefined reference to `std::codecvt::do_length(int&, char const*, char const*, unsigned int) const'

collect2: ld returned 1 exit status make: *** [NeuralNetProject.exe] Error 1