Has anyone seen this:?

boost/log/attributes/attribute_value_impl.hpp:47: undefined reference to `boost::log::v2s_mt_posix::attribute::impl::operator delete(void*, unsigned long)'
 In function `boost::log::v2s_mt_posix::attributes::attribute_value_impl<boost::posix_time::ptime>::~attribute_value_impl()':

 

Thanks,

Dave