[Easylogging++] 사용법
https://github.com/muflihun/easyloggingpp Easylogging++ is single header efficient logging library for C++ applications. It is extremely powerful, highly extendable and configurable to user's requirements. It provides ability to write your own sinks (via featured referred as LogDispatchCallback). This library is currently used by hundreds of open-source projects on github and ..