Hi Andrey,
Those are just examples in the docs. These particular examples don't exist as standalone files. You can find global loggers used in a number of other examples in the libs/log/example directory.
The global loggers is working well, but I could not compile the local log severity, here is the code: BOOST_LOG_INLINE_GLOBAL_LOGGER_CTOR_ARGS(my_logger, boost::log::sources::channel_logger_mt< >, (boost::log::keywords::channel = "general")) typedef enum { INFO, DEBUG, WARNING, ERROR, CRITICAL } ServerityLevel_t; template<typename CharT, typename TraitsT> std::basic_ostream< CharT, TraitsT >& operator << (std::basic_ostream< CharT, TraitsT >& strm, ServerityLevel_t lvl) { static const char* const str[] = { "INFO", "DEBUG", "WARNING", "ERROR", "CRITICAL" }; if (static_cast< std::size_t >(lvl) < (sizeof(str) / sizeof(*str))) { strm << str[lvl]; } else { strm << static_cast< int >(lvl); } return strm; } #define LOG(severity) BOOST_LOG_STREAM_WITH_PARAMS((my_logger::get()), (SetGetAttrib("FileName", PathToFilename(__FILE__)))(SetGetAttrib("LineNumber", (unsigned int)__LINE__))(ServerityLevel_t::severity)) /usr/include/boost/log/sources/channel_feature.hpp:171:60: error: no match for ‘operator[]’ (operand types are ‘const ServerityLevel_t’ and ‘boost::parameter::aux::default_<boost::log::v2_mt_posix::keywords::tag::channel, const boost::parameter::void_>’) return open_record_with_channel_unlocked(args, args[keywords::channel | parameter::void_()]); Obviously, you used BOOST_LOG_SEV where I was using BOOST_LOG_STREAM_WITH_PARAMS, the compiler seems to complain missing operator[], but I have no clue how to define it. Thank you.