Hello Dan,
Dan wrote: termbox2.h:2209:22: error: storage size of ‘sa’ isn’t known termbox2.h:2345:46: error: ‘struct sigaction’ has no member named ‘sa_handler’ termbox2.h:2345:44: error: invalid use of undefined type ‘struct sigaction’ Seems like termbox2.h expects something in your headers that is not present, what operating system and libc are you using? Kind regards, Benjamin.