TMUX on Amazon Linux (EC2)

Installing TMUX 1.6 on Amazon Linux: a fix if you get

cmd-load-buffer.o cmd-load-buffer.c
cmd-load-buffer.c: In function ‘cmd_load_buffer_exec’:
cmd-load-buffer.c:93: warning: implicit declaration of function ‘bufferevent_enable’
cmd-load-buffer.c: In function ‘cmd_load_buffer_callback’:
cmd-load-buffer.c:170: warning: implicit declaration of function ‘EVBUFFER_LENGTH’
cmd-load-buffer.c:170: error: dereferencing pointer to incomplete type
cmd-load-buffer.c:175: warning: implicit declaration of function ‘bufferevent_read’
cmd-load-buffer.c:183: warning: implicit declaration of function ‘evbuffer_add_printf’
cmd-load-buffer.c:184: error: dereferencing pointer to incomplete type
make: *** [cmd-load-buffer.o] Error 1