Re: [Boost-users] boost_regex compiler error

Hi John - thank you for your help! That was indeed the problem. I had version 1.58 headers and version 1.62 libraries. thanks! chris On Mon, Dec 5, 2016 at 11:40 AM, John Maddock wrote:

On 05/12/2016 17:47, Chris Padwick wrote:

...

Hi - I am stuck on a linker error with the boost_regex library. My platform is ubuntu 16.04 LTS, arm64, NVIDIA TX1. I downloaded and built boost 1.62.0 with the following parameters:

It looks to me like the headers you are including are from a different Boost version to the library you are linking against - all recent Boost.Regex versions mangle the namespace of their functions with the Boost version number, but as these missing symbols aren't mangled, I'm guessing you're picking up headers from an older version than 1.62.

HTH, John.

...

./bootstrap.sh --prefix=/usr/local sudo ./b2 -d2 architecture=arm address-model=64 install

I compiled a simple program using this command line:

g++ main.cpp -I/usr/local/include -L/usr/local/lib -lboost_regex

Here is the program:

#include #include <iostream>

using namespace std;

int main(int argc, char *argv[]) { static const boost::regex rxInt("[0-9]+"); string word = "foobar";

if(boost::regex_match(word, rxInt)) { cout << "Integer" << endl; } else { cout << "Not integer" << endl; }

return 0; }

Here are the linker errors:

| /tmp/ccuOD7Zj.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)': main.cpp:(.text._ZN5boost11regex_matchIN9__gnu_cxx17__ normal_iteratorIPKcNSt7__cxx1112basic_stringIcSt11char_trait sIcESaIcEEEEESaINS_9sub_matchISB_EEEcNS_12regex_traitsIcNS_ 16cpp_regex_traitsIcEEEEEEbT_SJ_RNS_13match_resultsISJ_T0_ EERKNS_11basic_regexIT1_T2_EENS_15regex_constants12_ match_flagsE[_ZN5boost11regex_matchIN9__gnu_cxx17__normal_it eratorIPKcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIc EEEEESaINS_9sub_matchISB_EEEcNS_12regex_traitsIcNS_ 16cpp_regex_traitsIcEEEEEEbT_SJ_RNS_13match_resultsISJ_T0_ EERKNS_11basic_regexIT1_T2_EENS_15regex_constants12_match_flagsE]+0x58): undefined reference to `boost::re_detail::perl_matche r<__gnu_cxx::__normal_iterator >, std::allocator > > >, boost::regex_traits >::match()' /tmp/ccuOD7Zj.o: In function `boost::re_detail::perl_matche r<__gnu_cxx::__normal_iterator >, std::allocator > > >, boost::regex_traits >::perl_matcher(__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 >)': main.cpp:(.text._ZN5boost9re_detail12perl_matcherIN9__gnu_cx x17__normal_iteratorIPKcNSt7__cxx1112basic_stringIcSt11char_ traitsIcESaIcEEEEESaINS_9sub_matchISC_EEENS_12regex_traitsIc NS_16cpp_regex_traitsIcEEEEEC2ESC_SC_RNS_13match_resultsISC_ SF_EERKNS_11basic_regexIcSJ_EENS_15regex_constants12_ match_flagsESC_[_ZN5boost9re_detail12perl_matcherIN9__gnu_cx x17__normal_iteratorIPKcNSt7__cxx1112basic_stringIcSt11char_ traitsIcESaIcEEEEESaINS_9sub_matchISC_EEENS_12regex_traitsIc NS_16cpp_regex_traitsIcEEEEEC5ESC_SC_RNS_13match_resultsISC_ SF_EERKNS_11basic_regexIcSJ_EENS_15regex_constants12_match_flagsESC_]+0xf8): undefined reference to `boost::re_detail::perl_matche r<__gnu_cxx::__normal_iterator >, std::allocator > > >, boost::regex_traits >::construct_init(boost::basic_regex > const&, boost::regex_constants::_match_flags)' collect2: error: ld returned 1 exit status

Any hints would be appreciated. Should I try to use an earlier version of boost?

thank you!

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