I am using boost_1_61_0. In my code I have:

#include <boost/regex.hpp>
static boost::regex testxp("[");

I have these libraries:
    libboost_regex.a  libboost_regex.so

I can see these libraries have symbols:
    LIBRARY: Shared object libboost_regex.so: 136 symbols imported.
    LIBRARY: Shared object libboost_system.so: 7 symbols imported.

To build my program I have added these linking options:
    -Wl,-bnoquiet -Wl,-Bstatic -lboost_regex -lboost_system -Wl,-Bdynamic

But I get this error during linking:
    ld: 0711-317 ERROR: Undefined symbol: .boost::basic_regex<char, boost::regex_traits<char, boost::cpp_regex_traits<char> > >::do_assign(char const*, char const*, unsigned int)

But that symbol is there:
machine:/home> nm libboost_regex.so nm libboost_regex.so |grep do_assign
._ZN5boost11basic_regexIcNS_12regex_traitsIcNS_16cpp_regex_traitsIcEEEEE9do_assignEPKcS7_j T   268508592
machine:/home> c++filt ._ZN5boost11basic_regexIcNS_12regex_traitsIcNS_16cpp_regex_traitsIcEEEEE9do_assignEPKcS7_j
.boost::basic_regex<char, boost::regex_traits<char, boost::cpp_regex_traits<char> > >::do_assign(char const*, char const*, unsigned int)