To build on Ubuntu (18.04) - should work on any other debian based system as well:
sudo apt install libboost-all-dev libkml-dev
cd Src
make
After successful build:
sudo make install
Usage:
oaip2oab <Path to openAIP files>
The tool will generate a world.oab file in open air binary format in the current directory. It can be used on a compatible skytraxx variometer. Get some aip-files with airspaces here: https://openaip.net