we have a handful of pkgs (comms/plptools and graphics/gphoto come to
mind) that use serial ports.  They both like to compile in a default
serial port and can both then override that at run time.  I was wondering
if we should collect a list somewhere and set

DEFAULT_SERIAL_PORT

somewhere in pkgsrc/mk/?.mk for each MACHINE_ARCH.  Of course the one
problem I see is that the default serial device might not be the same for
all m68k's or all mips boxes given the large number of unique ports for
those processors.

comments?

-Dan