[jira] (MNG-4226) Better detection of JAVA_HOME on Apple Mac OS X

["Jason van Zyl (JIRA)" <ji...@codehaus.org>]

    [ https://jira.codehaus.org/browse/MNG-4226?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=346797#comment-346797 ] 

Jason van Zyl commented on MNG-4226:
------------------------------------

Committed on 65863e0a28298b6d95bfbbf7cc28953f6ba91f93
Submitted by: Christopher Tubbs <ct...@apache.org>
https://github.com/apache/maven/pull/11

> Better detection of JAVA_HOME on Apple Mac OS X
> -----------------------------------------------
>
>                 Key: MNG-4226
>                 URL: https://jira.codehaus.org/browse/MNG-4226
>             Project: Maven 2 & 3
>          Issue Type: Improvement
>          Components: Command Line
>            Reporter: Alin Dreghiciu
>            Assignee: Jason van Zyl
>             Fix For: Issues to be reviewed for 3.x
>
>         Attachments: 0001-MNG-4226-Detect-JAVA_HOME-on-newer-Mac-OS-X.patch, MNG-4226-apache-maven.patch
>
>
> On mac JAVA_HOME is detected by using the following code:
> {code}
>            if [ -z "$JAVA_VERSION" ] ; then
>              JAVA_VERSION="CurrentJDK"
>            else
>              echo "Using Java version: $JAVA_VERSION"
>            fi
>            if [ -z "$JAVA_HOME" ] ; then
>              JAVA_HOME=/System/Library/Frameworks/JavaVM.framework/Versions/${JAVA_VERSION}/Home
>            fi
> {code}
> But this does not work in collaboration with Using "Java preferences" to change the actual java version to use as "CurrentJDK" does not change once you update the "java applications" order.
> There is an alternative (at least on Leopard) for determining current java home that is based on Java Preferences by using an apple provided script. So, as a replacement fo rthe code above the following could be used.
> {code}
>            if [ -z "$JAVA_HOME" ] ; then
>              JAVA_HOME=`/usr/libexec/java_home | tail -1`
>            fi
> {code}
> Could also be taht this is teh first attempt and if fails use the current way of determining home.



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