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Christoph Läubrich commented on MJAVADOC-707: --------------------------------------------- Any progress on this? I have debugged this up to the point in AbstractJavadocMojo in addJavadocOptions, there is this code: {code:java} if ( moduleSourceDir == null ) { addArgIfNotEmpty( arguments, "-sourcepath", JavadocUtil.quotedPathArgument( getSourcePath( sourcePaths ) ), false, false ); } else if ( mainResolvePathResult == null || ModuleNameSource.MODULEDESCRIPTOR.equals( mainResolvePathResult.getModuleNameSource() ) ) { addArgIfNotEmpty( arguments, "--module-source-path", JavadocUtil.quotedPathArgument( moduleSourceDir.toString() ) ); } {code} in the failing case, the moduleSourceDir is not null and thus the -sourcepath is never added as an option and then javadoc fails, if one specifies sourcepath in the mojo options manually everything works: {code:java} <configuration> <sourcepath>src/main/java</sourcepath> ... </configuration> {code} so this seems to disable something in the module processing part... > Plugin won't work if Automatic-Module-Name is used > -------------------------------------------------- > > Key: MJAVADOC-707 > URL: https://issues.apache.org/jira/browse/MJAVADOC-707 > Project: Maven Javadoc Plugin > Issue Type: Bug > Affects Versions: 3.3.1, 3.3.2, 3.4.0 > Reporter: Christopher Tubbs > Priority: Critical > > Using Automatic-Module-Name in a manifest (an intermediate step to help > transition to using modules) prevents this plugin from adding the necessary > dependencies to the class path, so it can build javadocs. > maven-compiler-plugin seems to work fine, as does surefire and all the others > when Automatic-Module-Name entries appear in a project's jar manifests. > However, this plugin, as of 3.3.1, still does not work correctly with these. > Instead of using the traditional class path, this plugin seems to force > treating the project as a module, even though it does not have any > module-info.java files, and most of its dependencies have not transitioned to > using modules. > Here's a pull request that demonstrates adding the Automatic-Module-Name to > the manifest for a multi-module (Maven module) project, that fails on the > javadoc plugin: > https://github.com/apache/accumulo/pull/2498 ; both javadoc:aggregate and > javadoc:jar are known to fail. I did not test with any other mojos. > Not supporting this feature holds all projects back from being able to > transition to modules over time. > http://branchandbound.net/blog/java/2017/12/automatic-module-name/ > https://docs.oracle.com/javase/9/docs/api/java/lang/module/ModuleFinder.html#automatic-modules -- This message was sent by Atlassian Jira (v8.20.10#820010)