Pre-requisites:
sudo apt-get install build-essential
sudo apt-get install libasound2-dev
TO use gpsd need:
sudo apt-get install gpsd libgps-dev
To use USB GPIO (sound fob ) PTT need:
sudo apt-get install libudev-dev
cd ~
mkdir Radio
cd ~~/Radio/direwolf
make clean
make
sudo make install
make install-conf
edit direwolf.conf
for CM108PTT add user to audio group