C++ 20 compilation problem

[pmakaragc]

Hello,

The library does not compile when C++20 is enabled. The std::result_of has been in removed in this version (https://en.cppreference.com/w/cpp/types/result_of).

Would it be possible to fix it?

Thank you.

[PJ127]

Same problem here. Is the spdlog_setup project going to continue? It prevents us from updating spdlog and from being C++20 compatible, which is (going to be / already) a problem.
Thank you for your work and your time.