I'm currently using a log4j-derived logging library for C++, and I've seen some new libraries that seems to be written in a more modern C++ (C++11 or beyond).
I wonder if there is some good and non-biased comparison of logging libraries for C++. I'm not necessarily interested in the best performance/c++conformance/, I'd like to see a broad comparison of different aspects of those libraries, their strengths and weaknesses, community support and interest trends and any other information that can be useful to choose one library or another.
Sorry if this question seems trivial, but after some search on the web I just found old info, very narrow comparisons, a few personal opinions on a specific library or just library authors opinions.
So my question is: where can I find some good and non-biased comparison of logging libraries for C++. Websites, whitepapers or whatever.