Tycho does not handle multi-release OSGi bundles

[davenice]

I have fallen over the issue documented at https://bugs.eclipse.org/bugs/show_bug.cgi?id=542905

Eclipse and OSGi support multi-release OSGi bundles. In my case I've got a Java 9+ MANIFEST.MF that introduces package imports for javax.xml.bind. These imports are not present in the default MANIFEST.MF.

If I build this using an environment based on Java 8, all is good. If I build this using an environment based on Java 11, the compilation fails because the extra package import is not resolved.

[laeubi]

package imports for javax.xml.bind. These imports are not present in the default MANIFEST.MF

javax.* package have to be imported also with pre java 9 so you better always import them if required.

If I build this using an environment based on Java 11, the compilation fails because the extra package import is not resolved.

can you provide a reproducer and/or more detailed error message?

[laeubi]

@davenice are you still interested in this and maybe provide an integration-test to demonstrate the issue?

[laeubi]

An example for a MR build can now be found here:

• https://github.com/eclipse-platform/eclipse.platform/pull/346

[laeubi]

One complication is that we currently resolve for multiple platforms but we do not for multiple java versions also of course the classpath is only resolved once.

As Multi-Relase jar have a very limited scope (e.g. only import-package can change across versions), I think a pragmatic solution would be to simply query for the additional packages in the target platform and add the jars accordingly.