In a Tycho ctree build, the Java files in the editor/java directory are not compiled to class files inside the bin directory. This in turn leads to an empty language-java.jar, which means that external Java strategies are not loaded and cannot be found. This is not a problem when building in Eclipse, since Eclipse automatically compiles all Java files in all source folders, but this does not happen in the Tycho build on the build farm.

An extra build step in the ctree build is required that compiles the external java strategies.

Submitted by Gabriël Konat on 9 October 2013 at 10:27