Jansson

The jansson package is required for Asterisk version 12.x.x and onwards.

cd /usr/src
wget http://www.digip.org/jansson/releases/jansson-2.11.tar.gz
tar xvf jansson-2.11.tar.gz
rm -f jansson-2.11.tar.gz
cd jansson-2.11

./configure
make
make install
make check