Put the vehicle signal specification and this repository in a common folder.
git clone https://github.com/GENIVI/vehicle_signal_specificationgit clone https://github.com/w3c/vsso
cd rdf-generationmakeThe Makefile will call the generation script, which will generate both vsso.ttl and possibly an extension named vsso-extension.ttl.
VSS comes with an extension mechnism, where new private concepts are included in the "Private" repository. This methods has the benefit of separating the core model from the private concepts. The script vspec2ttl.py will generate an extension vsso-extension.ttl if the private branch is included. See https://github.com/GENIVI/vehicle_signal_specification for more details. Another possible solution consists in modifying directly VSS concepts. It is however not recommended.