Thanks for your interest in the Eclipse SmartHome project!
Building and running the project is fairly easy if you follow the steps detailed below.
Please note that Eclipse SmartHome is not a product itself, but a framework to build solutions on top. This means that what you build is primarily an artifact repository of OSGi bundles that can be used within smart home products. Besides this repository, a VSCode extension is available for editing configuration files with full IDE support.
The build infrastructure is based on Maven in order to make it as easy as possible to get up to speed. If you know Maven already then there won't be any surprises for you. If you have not worked with Maven yet, just follow the instructions and everything will miraculously work ;-)
What you need before you start:
Make sure that the "mvn" command is available on your path
Checkout the source code from GitHub, e.g. by running
git clone https://github.com/eclipse/smarthome.git
To build Eclipse SmartHome from the sources, Maven takes care of everything:
If there are tests that are failing occasionally on your local build, run mvn -DskipTests=true clean install
instead to skip them.
The p2 repository that contains all bundles as a build result will be available in the folder products/org.eclipse.smarthome.repo/target
.