<div dir="ltr"><div><div><div><div>Hi Sepehr<br><br></div>To ensure others can reproduce your issue, can you start with a standard template<br></div><div style="margin-left:40px"><span style="font-family:monospace,monospace">vagrant init ubuntu/trusty64</span><br><span style="font-family:monospace,monospace"></span><span style="font-family:monospace,monospace">vagrant up</span><br><span style="font-family:monospace,monospace"></span><span style="font-family:monospace,monospace">vagrant ssh</span><br></div><div style="margin-left:40px"><span style="font-family:monospace,monospace"></span></div></div></div><div><div><div><div><div><div class="gmail_extra">and then post every command you have executed within the VM up to where you get the error?<br></div><div class="gmail_extra"><br></div><div class="gmail_extra">Yours, Junxiao<br></div><div class="gmail_extra"><br><div class="gmail_quote">On Sun, Dec 25, 2016 at 2:40 PM, sepehr abdous <span dir="ltr"><<a href="mailto:sepehrabdous1375@gmail.com" target="_blank">sepehrabdous1375@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">as you suggested I started with a clean VM and I go over the steps again completely and then I got this error. how can I handle it?<br>[2873/2942] Linking build/bindings/python/ns/virtu<wbr>al_net_device.so<span><br>./libns3-dev-ndnSIM-debug.so: undefined reference to `boost::re_detail_106200::perl<wbr>_matcher<__gnu_cxx::__normal_<wbr>iterator<char const*, std::__cxx11::basic_string<cha<wbr>r, std::char_traits<char>, std::allocator<char> > >, std::allocator<boost::sub_matc<wbr>h<__gnu_cxx::__normal_iterator<wbr><char const*, std::__cxx11::basic_string<cha<wbr>r, std::char_traits<char>, std::allocator<char> > > > >, boost::regex_traits<char, boost::cpp_regex_traits<char> > >::construct_init(boost::basic<wbr>_regex<char, boost::regex_traits<char, boost::cpp_regex_traits<char> > > const&, boost::regex_constants::_match<wbr>_flags)'<br></span><span>./libns3-dev-ndnSIM-debug.so: undefined reference to `boost::re_detail_106200::perl<wbr>_matcher<__gnu_cxx::__normal_<wbr>iterator<char const*, std::__cxx11::basic_string<cha<wbr>r, std::char_traits<char>, std::allocator<char> > >, std::allocator<boost::sub_matc<wbr>h<__gnu_cxx::__normal_iterator<wbr><char const*, std::__cxx11::basic_string<cha<wbr>r, std::char_traits<char>, std::allocator<char> > > > >, boost::regex_traits<char, boost::cpp_regex_traits<char> > >::match()'<br>collect2: error: ld returned 1 exit status<br><br></span><span>./libns3-dev-ndnSIM-debug.so: undefined reference to `boost::re_detail_106200::perl<wbr>_matcher<__gnu_cxx::__normal_<wbr>iterator<char const*, std::__cxx11::basic_string<cha<wbr>r, std::char_traits<char>, std::allocator<char> > >, std::allocator<boost::sub_matc<wbr>h<__gnu_cxx::__normal_iterator<wbr><char const*, std::__cxx11::basic_string<cha<wbr>r, std::char_traits<char>, std::allocator<char> > > > >, boost::regex_traits<char, boost::cpp_regex_traits<char> > >::construct_init(boost::basic<wbr>_regex<char, boost::regex_traits<char, boost::cpp_regex_traits<char> > > const&, boost::regex_constants::_match<wbr>_flags)'<br></span><span>./libns3-dev-ndnSIM-debug.so: undefined reference to `boost::re_detail_106200::perl<wbr>_matcher<__gnu_cxx::__normal_<wbr>iterator<char const*, std::__cxx11::basic_string<cha<wbr>r, std::char_traits<char>, std::allocator<char> > >, std::allocator<boost::sub_matc<wbr>h<__gnu_cxx::__normal_iterator<wbr><char const*, std::__cxx11::basic_string<cha<wbr>r, std::char_traits<char>, std::allocator<char> > > > >, boost::regex_traits<char, boost::cpp_regex_traits<char> > >::match()'<br>collect2: error: ld returned 1 exit status<br><br></span></div><br></blockquote></div></div></div></div></div></div></div></div>