make[2]: Entering directory `/home/laotse/src/abs/zeromq-git/src/libzmq-build/src'
  CXX    libzmq_la-address.lo
address.cpp: In destructor 'zmq::address_t::~address_t()':
address.cpp:41:29: error: deleting object of polymorphic class type 'zmq::tcp_address_t' which has non-virtual destructor might cause undefined behaviour [-Werror=delete-non-virtual-dtor]
cc1plus: all warnings being treated as errors