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Posted to issues@maven.apache.org by "Russell Gold (JIRA)" <ji...@apache.org> on 2019/02/13 16:26:00 UTC

[jira] [Created] (MCOMPILER-373) Unable to compile MR jar code against older directories

Russell Gold created MCOMPILER-373:
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             Summary: Unable to compile MR jar code against older directories
                 Key: MCOMPILER-373
                 URL: https://issues.apache.org/jira/browse/MCOMPILER-373
             Project: Maven Compiler Plugin
          Issue Type: Bug
    Affects Versions: 3.8.0
            Reporter: Russell Gold
         Attachments: reproducer.zip

Given a project with multiple source directories, java, java9 and java11, each MR directory should compile against the previous one. In the current plugin, this only happens if the MR directory contains a module-info.java file.

The attached reproducer expects toolchains to be set up for the jdk9 and jdk11 compilers. It fails when trying to compile the java11 directory, as the classes/META-INF/versions/9 directory is not present on its classpath.



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