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https://issues.apache.org/jira/browse/MCOMPILER-369?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17848993#comment-17848993
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Gili commented on MCOMPILER-369:
--------------------------------
Now that nabble is dead, the above discussion can be found at
https://mail.openjdk.org/pipermail/jigsaw-dev/2016-November/010201.html
> Adding module-info.java breaks JMH annotation processor
> -------------------------------------------------------
>
> Key: MCOMPILER-369
> URL: https://issues.apache.org/jira/browse/MCOMPILER-369
> Project: Maven Compiler Plugin
> Issue Type: Bug
> Affects Versions: 3.8.0
> Reporter: Gili
> Priority: Major
> Attachments: annotation-processor-jigsaw.zip
>
>
> # Open testcase
> # Run {{clean install}}. Notice that the benchmarks run.
> # Open {{pom.xml}} and comment-out the {{<annotationProcessorPaths>
> section.}}
> # Run {{clean install}}. Notice that the annotation processor does not run
> and the benchmarks break.
> # Delete/rename {{module-info.java}}.
> # Run {{clean install}}. Notice that the benchmarks work again.
> The documentation for {{<annotationProcessorPaths>}} states that by default
> annotation processors are detected from the classpath. It seems that adding
> {{module-info.java}} breaks that somehow, which is weird/unexpected because
> JMH exists as a dependency outside the newly-declared module.
> I did two things to prove that the annotation processor is not being invoked
> in step 4:
> # Notice that {{target/test-classes/META-INF}} is not created.
> # Place a breakpoint in {{org.openjdk.jmh.generators.BenchmarkProcessor}}
> and notice that it is never even constructed.
> I tried digging into the maven-compiler-plugin and plexus-compiler
> source-code but couldn't figure out where the problem is. The only workaround
> I found is to specify {{annotationProcessorPaths}} manually but it took me
> half a day to track down this problem.
> Any idea what is going on? Is this a bug in the plugin(s)?
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