...one of the most highly
regarded and expertly designed C++ library projects in the
world.
— Herb Sutter and Andrei
Alexandrescu, C++
Coding Standards
BOOST_LOG_GLOBAL_LOGGER_DEFAULT — The macro defines a global logger initializer that will default-construct the logger.
// In header: <boost/log/sources/global_logger_storage.hpp>
BOOST_LOG_GLOBAL_LOGGER_DEFAULT(tag_name, logger)