If you are running IRIX 6.4 the Makefiles all assume that you are
using the new termios data structure.  (See the man page on termios(7) ).

If you want to use the old structure, you can still do so as long as you
define OLD_TERMIOS in the Makefiles, i.e.

CFLAGS= -c -g -D_OLD_TERMIOS $(XFLAGS) -fullwarn

This will makes sure that the set_baud function uses the old termios data
structure.
