How can I tell what capabilities are built in to a wpa_supplicant executable?

[chris at globaloptimists.org]

Is there any way to tell what options have been used to build a 
wpa_supplicant executable?

In particular I'd like to be able to find out if the wpa_supplicant 
provided by the Ubuntu
repositories has EAP-SIM capabilities.


If I add an EAP-SIM configuration entry to my wpa_supplicant.conf and 
get no errors when
I run wpa_supplicant does that mean that it has been built with EAP-SIM 
options?