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https://issues.apache.org/jira/browse/DERBY-7056?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16992927#comment-16992927
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Davide Grandi commented on DERBY-7056:
--------------------------------------

I tried to setup a 3way compare between

svn trunk - git io7m branch - git trunk

but trying a canical build (_*ant clobber - ant all - ant buildjars*_) on a 
freshly cloned _*io7m*_ I got an error :

meta-inf-common:
 [mkdir] Created dir: 
C:\Altea\Progetti\Apache\derby\io7m\jars\sane\lists\META-INF
 [copy] Copying 2 files to 
C:\Altea\Progetti\Apache\derby\io7m\jars\sane\lists\META-INF
 [exec] -----------------
 [exec] Errors
 [exec] 000: org.apache.derby.commons: Can not find JAR file 'derbyshared.jar'
 [exec] -----------------
 [exec] Warnings
 [exec] 000: org.apache.derby.commons: Cannot find entry on -classpath: 
../jars/sane/derbyshared.jar
 [exec] 001: org.apache.derby.commons: Classpath is empty. Private-Package, 
-privatepackage, and Export-Package can only expand from the classpath when 
there is one
 [exec] 002: org.apache.derby.commons: Unused Private-Package instructions, no 
such package(s) on the class path: [*]
 [exec] 003: org.apache.derby.commons: The JAR is empty: The instructions for 
the JAR named org.apache.derby.commons did not cause any content to be 
included, this is likely wrong

If I missed some points ... forget it otherwise let me know how to try a build.

> Make Derby modules usable by OSGi-aware applications
> ----------------------------------------------------
>
>                 Key: DERBY-7056
>                 URL: https://issues.apache.org/jira/browse/DERBY-7056
>             Project: Derby
>          Issue Type: Task
>          Components: Build tools
>    Affects Versions: 10.15.1.3
>            Reporter: Richard N. Hillegas
>            Assignee: Richard N. Hillegas
>            Priority: Major
>         Attachments: 0001-Initial-production-of-OSGi-manifests.patch, 
> 0002-Initial-production-of-OSGi-manifests-for-locales.patch, 
> 0003-Produce-working-locales-fragments-and-refactor.patch, 
> 0004-Reintroduce-Class-Path-attributes.patch, 
> 0005-Clear-BundleActivator.patch, complete0.diff, derby.txt
>
>
> OSGi R7 introduced support for JPMS modules in 2018 according to 
> https://blog.osgi.org/2018/02/osgi-r7-highlights-java-9-support.html. This 
> includes additional information which goes into jar file manifests. Support 
> for this OSGi information was requested by an email thread on the user list: 
> http://apache-database.10148.n7.nabble.com/OSGi-manifest-headers-td150560.html.
>  We need advice from OSGi experts on how to make Derby modules usable by 
> OSGi-aware applications. 



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