definition of implicit copy constructor for 'enumeration<mapnik::colorizer_mode_enum, &mapnik::colorizer_mode_to_string, &mapnik::colorizer_mode_from_string, &mapnik::colorizer_mode_lookup>' is deprecated because it has a user-provided copy assignment operator [-Wdeprecated-copy-with-user-provided-copy] void operator=(const enumeration& other) { value_ = other.value_; }
