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From "Matthias Geerdsen (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MNG-6649) Duplicate class error in maven-compiler-plugin
Date Tue, 28 May 2019 12:51:00 GMT

    [ https://issues.apache.org/jira/browse/MNG-6649?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16849690#comment-16849690
] 

Matthias Geerdsen commented on MNG-6649:
----------------------------------------

Actually we are experiencing something similar with a setup as described in [https://maven.apache.org/guides/mini/guide-using-one-source-directory.html#Producing_Multiple_Unique_JARs_from_a_Single_Source_Directory]

 

The directory layout is the following, with the top pom.xml not producing anything:

 
{noformat}
.
├── pom.xml
├── module-main
│   └── pom.xml
├── src
│   ├── ...
...{noformat}
 

 

module-main/pom.xml contains:
{code:java}
<build>
  <sourceDirectory>../src</sourceDirectory>
...
</build>
{code}
This leads to the following as described in this issue
{noformat}
[DEBUG] Source roots:
[DEBUG] /usr/src/mymaven/module-main/../src
[DEBUG] /usr/src/mymaven/src
[DEBUG] /usr/src/mymaven/module-main/target/generated-sources/annotations{noformat}
and therefore to duplicate class errors.

 

> Duplicate class error in maven-compiler-plugin
> ----------------------------------------------
>
>                 Key: MNG-6649
>                 URL: https://issues.apache.org/jira/browse/MNG-6649
>             Project: Maven
>          Issue Type: Bug
>          Components: Plugins and Lifecycle
>    Affects Versions: 3.6.1
>         Environment: maven version 3.6.1
> OpenJDK8 installed using choco's zulu8 package.
>            Reporter: Kunal
>            Priority: Trivial
>         Attachments: repro.zip
>
>
> When trying to run `mvn package` the `maven-compiler-plugin` fails with maven 3.6.1 with
below errors. It works with maven's 3.6.0.
> {noformat}
> [ERROR] <folder>/AccessStep.java:[12,8] duplicate class: com.microsoft.programSynthesis.wrangling.json.jPathStep.AccessStep
> [ERROR] -> [Help 1]
> org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.1:compile
(default-compile) on project dsl: Compilation failure
>  at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:215)
>  at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:156)
>  at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:148)
>  at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:117)
>  at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:81)
>  at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build
(SingleThreadedBuilder.java:56)
>  at org.apache.maven.lifecycle.internal.LifecycleStarter.execute (LifecycleStarter.java:128)
>  at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:305)
>  at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:192)
>  at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:105)
>  at org.apache.maven.cli.MavenCli.execute (MavenCli.java:956)
>  at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:288)
>  at org.apache.maven.cli.MavenCli.main (MavenCli.java:192)
>  at sun.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)
>  at sun.reflect.NativeMethodAccessorImpl.invoke (NativeMethodAccessorImpl.java:62)
>  at sun.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAccessorImpl.java:43)
>  at java.lang.reflect.Method.invoke (Method.java:498)
>  at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced (Launcher.java:282)
>  at org.codehaus.plexus.classworlds.launcher.Launcher.launch (Launcher.java:225)
>  at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode (Launcher.java:406)
>  at org.codehaus.plexus.classworlds.launcher.Launcher.main (Launcher.java:347)
> Caused by: org.apache.maven.plugin.compiler.CompilationFailureException: Compilation
failure
>  at org.apache.maven.plugin.compiler.AbstractCompilerMojo.execute (AbstractCompilerMojo.java:858)
>  at org.apache.maven.plugin.compiler.CompilerMojo.execute (CompilerMojo.java:129)
>  at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo (DefaultBuildPluginManager.java:137)
>  at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:210)
>  at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:156)
>  at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:148)
>  at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:117)
>  at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:81)
>  at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build
(SingleThreadedBuilder.java:56)
>  at org.apache.maven.lifecycle.internal.LifecycleStarter.execute (LifecycleStarter.java:128)
>  at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:305)
>  at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:192)
>  at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:105)
>  at org.apache.maven.cli.MavenCli.execute (MavenCli.java:956)
>  at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:288)
>  at org.apache.maven.cli.MavenCli.main (MavenCli.java:192)
>  at sun.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)
>  at sun.reflect.NativeMethodAccessorImpl.invoke (NativeMethodAccessorImpl.java:62)
>  at sun.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAccessorImpl.java:43)
>  at java.lang.reflect.Method.invoke (Method.java:498)
>  at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced (Launcher.java:282)
>  at org.codehaus.plexus.classworlds.launcher.Launcher.launch (Launcher.java:225)
>  at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode (Launcher.java:406)
>  at org.codehaus.plexus.classworlds.launcher.Launcher.main (Launcher.java:347)
> {noformat}



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