To get cppssh and all dependant software:

repo init -u https://github.com/cdesjardins/cppsshManifest.git 
repo sync
cd build
[./]makebotan.py
[./]build.py --CDLogger --cppssh

cppssh uses the Botan library, latest version
https://github.com/randombit/botan
http://botan.randombit.net/