./ns3/make-event.h:665:20: error: unused typedef 'F' [-Werror,-Wunused-local-typedef] typedef void (*F)(U1, U2, U3); ^ ./ns3/make-event.h:699:20: error: unused typedef 'F' [-Werror,-Wunused-local-typedef] typedef void (*F)(U1, U2, U3, U4); ^ ./ns3/make-event.h:633:20: error: unused typedef 'F' [-Werror,-Wunused-local-typedef] typedef void (*F)(U1, U2); ^ ./ns3/make-event.h:665:20: error: unused typedef 'F' [-Werror,-Wunused-local-typedef] typedef void (*F)(U1, U2, U3); ^ 4 errors generated.