[jira] [Commented] (ACCUMULO-3662) Verify correct looking JAVA_HOME in build_native_library.sh

["Christopher Tubbs (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/ACCUMULO-3662?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14561873#comment-14561873 ] 

Christopher Tubbs commented on ACCUMULO-3662:
---------------------------------------------

I think we can add a quick check to verify {{$JAVA_HOME/bin/javah}} exists in the Makefile, right? That should be sufficient to determine if the JAVA_HOME points to a JDK. After that, we can just assume the JNI headers are in the include directory. We could check for the JNI headers directly, but that may not be as platform-independent as checking for the existence of javah.

Do we need to do this check on Darwin also, or just Linux? I mean, can we assume Darwin has a JDK installed, or no?

> Verify correct looking JAVA_HOME in build_native_library.sh
> -----------------------------------------------------------
>
>                 Key: ACCUMULO-3662
>                 URL: https://issues.apache.org/jira/browse/ACCUMULO-3662
>             Project: Accumulo
>          Issue Type: Improvement
>          Components: scripts
>            Reporter: Josh Elser
>            Assignee: Christopher Tubbs
>            Priority: Critical
>              Labels: newbie, usability
>             Fix For: 1.6.3, 1.8.0, 1.7.1
>
>
> JAVA_HOME needs to be set to a valid JDK to run {{build_native_library.sh}} successfully. Either it's extracted from the environment or it's set in accumulo-env.sh.
> Either way, when it isn't set (or set incorrectly), we should catch this, print a warning and exit the script to prevent the deluge 'JNI_EXPORT' related error messages.



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