BUILD:          modules/m_autodrop.cpp
/home/inspircd/inspircd/src/modules/m_autodrop.cpp:54:12: error: ‘ModResult ModuleAutoDrop::OnPreCommand(std::__cxx11::string&, std::vector<std::__cxx11::basic_string<char> >&, LocalUser*, bool, const string&)’ marked ‘override’, but does not override
  ModResult OnPreCommand(std::string& command, std::vector<std::string>&, LocalUser* user, bool, const std::string&) CXX11_OVERRIDE
            ^~~~~~~~~~~~
compilation terminated due to -Wfatal-errors.
real.mk:280: recipe for target 'modules/m_autodrop.so' failed
make[1]: *** [modules/m_autodrop.so] Error 1
GNUmakefile:154: recipe for target 'target' failed
make: *** [target] Error 2