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https://issues.apache.org/jira/browse/BUILDR-549?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12932241#action_12932241
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Ed Smiley commented on BUILDR-549:
----------------------------------

Uninstalling Buildr and reinstalling requires the RJB gem.

If I uninstall rjb and then do 
 sudo env JAVA_HOME=$JAVA_HOME gem install --version 1.2.5 rjb

It will look for the include files in /Home/Home!

extconf.rb:40:in `open': No such file or directory - 
/Library/Java/Home/Home/include (Errno::ENOENT)
        from extconf.rb:40

(This is _after_ installing the developer kit which is supposed to supply the 
include files.)


> Buildr cannot create a JVM using MRI on OS X 10.6 with Java Update 3 installed
> ------------------------------------------------------------------------------
>
>                 Key: BUILDR-549
>                 URL: https://issues.apache.org/jira/browse/BUILDR-549
>             Project: Buildr
>          Issue Type: Bug
>          Components: Core features
>    Affects Versions: 1.4.1, 1.4.2, 1.4.3
>         Environment: OS X 10.6.5 with Java Update 3 for OS X 10.6; tested 
> with 1.8.7-p174 and 1.8.7-p302, but probably any MRI will have this problem
>            Reporter: Rhett Sutphin
>         Attachments: buildfile, trace.txt
>
>
> Java Update 3 for OS X changed the way the JDK is installed on OS X and, in 
> the process, broke RJB.  With the current trunk, buildr's specs will not run. 
>  They give the error "RuntimeError : can't create Java VM".  Buildfiles which 
> invoke java have the same problem.
> Allegedly, upgrading to rjb 1.3.2 will fix this problem.  My initial efforts 
> in this direction have not been successful.  I'll investigate further and 
> update this ticket.

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