Smallest footprint in 2015

[Alexandre Kaskasoli]

Hello Matt,

There is a link on the homepage on compiling dropbear to about 110kb but the
post is from 2004.

I've been playing around with options.h and managed to get the dropbear
server to about 195kb.

I realise a lot of things have been added and changed in the last decade and
I'm happy with the size but was wondering if we could reach any smaller now?