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https://issues.apache.org/jira/browse/MNG-6501?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16673509#comment-16673509
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Karl Heinz Marbaise commented on MNG-6501:
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Hm..If I call a {{mvn --version}} on my Mac with Maven 3.6.0 it looks like this:
{code}
Apache Maven 3.6.0 (97c98ec64a1fdfee7767ce5ffb20918da4f719f3;
2018-10-24T20:41:47+02:00)
Maven home: /usr/local/maven
Java version: 1.8.0_171, vendor: Oracle Corporation, runtime:
/Library/Java/JavaVirtualMachines/jdk1.8.0_171.jdk/Contents/Home/jre
Default locale: en_US, platform encoding: UTF-8
OS name: "mac os x", version: "10.11.6", arch: "x86_64", family: "mac"
{code}
It looks like it would point to JRE but I can compile and build etc. without
any issue...
Furthermore can you please add a full log output {{mvn -X ..}} in the situation
where your build fails....Apart from that I would recommend to remove the
setting of {{M2_HOME}} in particular in Jenkins builds. Apart from that I would
ask why you need to use Ant in a Maven build? Please add the pom file as
well....
> Maven always picks the JRE path as java.home
> --------------------------------------------
>
> Key: MNG-6501
> URL: https://issues.apache.org/jira/browse/MNG-6501
> Project: Maven
> Issue Type: Bug
> Components: core
> Affects Versions: 3.2.3
> Reporter: Joseph
> Priority: Blocker
> Attachments: maven_jdk.png
>
>
> we set the proper JDK directory as JAVA_HOME in the environment variable. but
> the maven is forcefully picking up JRE_HOME.
> Even though the JAVA_HOME is pointing to the proper JDK path.
>
> $ echo $JAVA_HOME
> */apps/dftjenkins/local/java/jdk1.8.0_102*
> $ ls -lrt ${JAVA_HOME}/bin/javac
> -rwxr-xr-x. 1 dftjenkins cisco 7941 Jun 22 2016
> */apps/dftjenkins/local/java/jdk1.8.0_102/bin/javac*
> $ echo $M2_HOME
> /apps/dftjenkins/local/apache-maven/apache-maven-3.2.3
>
> Maven is picking the JRE path as java.home
>
> $ mvn -v
> Java HotSpot(TM) 64-Bit Server VM warning: ignoring option MaxPermSize=256m;
> support was removed in 8.0
> Picked up _JAVA_OPTIONS: -Djava.io.tmpdir=/apps/dftjenkins/jenkins_node/tmp
> Apache Maven 3.2.3 (33f8c3e1027c3ddde99d3cdebad2656a31e8fdf4;
> 2014-08-11T13:58:10-07:00)
> Maven home: /apps/dftjenkins/local/apache-maven/current
> Java version: 1.8.0_102, vendor: Oracle Corporation
> *Java home: /apps/dftjenkins/local/java/jdk1.8.0_102/jre*
> Default locale: en_US, platform encoding: UTF-8
> OS name: "linux", version: "3.10.0-693.11.6.el7.x86_64", arch: "amd64",
> family: "unix"
> This issue impact the ant call from maven execution . because java.home is
> pointing to JRE_HOME and the ant compilation fails with
>
> [ERROR] Perhaps JAVA_HOME does not point to the JDK.
> [ERROR] It is currently set to "/apps/dftjenkins/local/java/jdk1.8.0_102/jre"
>
>
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