mutually exclusive OPTIONS?

[Danny Pansters]

Hi guys,

I'm making a port that has several mutually exclusive compile-time options. I 
want to present them as OPTIONS as should, but is there a way within the 
ports framework to ensure that only one (of the 5 possibilities) is selected, 
or when one of them is the default but then with 4 mutually exclusive OPTIONS 
if the user needs one of teh non-default options?

TIA,

Dan