WPA_Supplicant - build library

[Holger Schurig]

You'd do it like with any C program, remove the main() function and
then do all needed initializations by yourself.

But this isn't that easy. wpa_supplicant is written around an
event-loop, and that might bite with the event loop of your own
program. Actually, it probably will, not just "might".

Therefore anyone used wpa_supplicant as is, and communicates with it
via DBUS and/or the communication socket that also "wpa_cli" uses for
communication.