In file included from SchindelhauerTMCG.cc:31:
In file included from ./SchindelhauerTMCG.hh:48:
./TMCG_OpenStack.hh:49:42: error: no template named 'binary_function' in namespace 'std'; did you mean '__binary_function'?
        struct eq_first_component : public std::binary_function<
                                           ~~~~~^~~~~~~~~~~~~~~
                                                __binary_function


std::binary_function is deprecated, and clang-16 default to C++20.

Please replace the uses of deprecated features with valid ones, and add compilation arguments that set the C++ standard level.