Value MHD_USE_EPOLL_LINUX_ONLY is deprecated, use MHD_USE_EPOLL
src/api/Httpd.cpp:105:13: warning: Value MHD_USE_EPOLL_LINUX_ONLY is deprecated, use MHD_USE_EPOLL
         flags |= MHD_USE_EPOLL_LINUX_ONLY;
             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~