Direwolf setup
I like building direwolf from source to ensure I have the latest updates...it is a pretty easy process on a Raspberry Pi.
Starting with the directions from the README
sudo apt-get install git
sudo apt-get install gcc
sudo apt-get install g++
sudo apt-get install make
sudo apt-get install cmake
sudo apt-get install libasound2-dev
sudo apt-get install libudev-dev
sudo apt-get install libavahi-client-dev
Then I added a few additional packages to give me more capabilities.
sudo apt install gpsd
sudo apt install libgps-dev
sudo apt install libhamlib-dev
sudo apt install libgpiod-dev
Then back to the README with the steps to build.
cd ~
git clone https://www.github.com/wb2osz/direwolf
cd direwolf
git checkout dev
mkdir build && cd build
cmake ..
make -j4
sudo make install
make install-conf