MYSQL mysql;

    mysql_init(&mysql);

    auto r = mysql_options(&mysql, MYSQL_OPT_NONBLOCK, nullptr);

    MYSQL *ret = nullptr;

    mysql_real_connect_start(&ret,

                             &mysql,

                             "127.0.0.1",

                             "root",

                             "root",

                             "mysql",

                             3306,

                             nullptr,

                             0);