No member named 'memcpy' in namespace 'std'; did you mean 'wmemcpy'?

Implicit instantiation of undefined template 'std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >'

I have spent some time trying to find out what causes the problem, but did not succeed. 

I am using Mac os 10.14.6 and xcode 11.3.1. 

I tried using cln from brew distribution, as well as, compiling it from source (cln webpage).

P.S. The errors arise at the moment I try to include cln path in the Xcode's "Header Search Path".

Sincerely and thanks for your help,