To build Log4j 2 Scala API, you need a JDK implementation version 1.8 or greater and Apache Maven 3.x.
To perform the license release audit, a.k.a. "RAT check", run.
mvn apache-rat:check
To install the jars in your local Maven repository, from a command line, run:
mvn clean install
Next, to build the site:
mvn site