_____________________________________________ From: Leo Carreon [mailto:lcarreon@bigpond.net.au] Sent: 12 July 2013 01:31 To: Boost Users Mailing List Subject: Re: [Boost-users] Query on Boost.Log From: Leo Carreon<mailto:lcarreon@bigpond.net.au> Sent: Friday, July 12, 2013 8:42 AM To: Boost Users Mailing List<mailto:boost-users@lists.boost.org> Subject: Query on Boost.Log Hi everyone, I’m trying to learn how to use Boost.Log from Boost 1.54.0 on Fedora 18. When I attempt to call boost::log::init_from_stream() even with BOOST_LOG_DYN_LINK defined, I get the error message”undefined reference to `void boost::log::v2_mt_posix::init_from_stream<char>(std::basic_istream<char, std::char_traits<char> >&)'” for the line where I called the function. Note that I have included the header file “boost/log/utility/setup/from_stream.hpp” and added –lboost_log to my link command line. Am I missing something. I have noticed that boost::log::init_from_stream() is a template. Is an instance of this template added into the shared library? Kind regards, Leo Hi again everyone, FYI. I built Boost 1.54.0 using the following bjam options – link=shared runtime-link=shared I have also checked the build logs from the above and discovered that not all of the .cpp files in libs/log/src have been included during the build. Kind regards, Leo Just a guess from having used quite a lot of Boost Log v1 before it was fully integrated into boost. I believe there is a separate library boost_log_setup - have you tried linking against that? -Colin