We have a multi-jar project set up in the "flat" layout style. We have a parent POM which refs all the child POMs in the <modules> section. We would like to have a special jar which includes a subset of some of the project's jars, packaged as an Eclipse plugin - a library plugin - for other plugins to use. So we made a project for this which I'll call the eclipse-runtime plugin. This project has no source itself; it serves only to collect together a (sub)set of other project's jars. In the eclipse-runtime plugin's POM, I declare dependencies on the other projects whose Jars we want to include. If I run eclipse:eclipse on this POM, it puts in <links> to the "JARs" of these other projects (using the corresponding Jars from my local repository) in the .project file, and updates the .classpath to have entries that reference these. This make things work in the plug-in development environment. For instance, when I have an eclipse plugin dependency on my runtime plugin in another Eclipse plugin-project, this other plugin-project compiles OK.

But - the build (both maven and Eclipse) of this runtime plugin produces an empty JAR - since there is no source code in the project itself. I need the build to produce a jar which contains all the referenced JARs, I think, so when a user downloads installs the library plugin using Eclipses "update" mechanism, the referenced jars are there.

Any idea how to do this?

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Another issue: I tried running eclipse:eclipse goal from the parent POM. I saw in another posting to this list that the eclipse:eclipse goal, when run from a parent POM, is supposed to create project dependencies, instead of <links> to jars in the local repository. I tried this for my plugin projects, and found that it didn't put any <links> in the .project file for these dependencies (as expected), but it also didn't update the .classpath either - so as a result, things which depend on the runtime plugin to compile now fail to compile. The .classpath file has no entries at all for projects this library project is depending on. I did notice that it did the right thing for *non-Eclipse-plugin* projects: the .classpath file had the right entries added for dependent projects.

Is this a known issue with the eclipse:eclipse goal, when used with Eclipse plugin projects?

-Marshall

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