From: Justin Collins <justincollins@...>
Date: 2011-03-02T12:07:12+09:00
Subject: Re: rjb install error

On 02/28/2011 06:31 AM, Ely Mee wrote:
> I want to install rjb on Linux (ubuntu) and I get this message:
>
> $ sudo JAVA_HOME=/usr/lib/jvm/java-6-openjdk gem install rjb
> Building native extensions.  This could take a while...
> ERROR:  Error installing rjb:
>    ERROR: Failed to build gem native extension.
>
> /usr/bin/ruby1.8 extconf.rb
> *** extconf.rb failed ***
> Could not create Makefile due to some reason, probably lack of
> necessary libraries and/or headers.  Check the mkmf.log file for more
> details.  You may need configuration options.
>
> Provided configuration options:
>    --with-opt-dir
>    --without-opt-dir
>    --with-opt-include
>    --without-opt-include=${opt-dir}/include
>    --with-opt-lib
>    --without-opt-lib=${opt-dir}/lib
>    --with-make-prog
>    --without-make-prog
>    --srcdir=.
>    --curdir
>    --ruby=/usr/bin/ruby1.8
> extconf.rb:45:in `open': No such file or directory -
> /usr/lib/jvm/java-6-openjdk/include (Errno::ENOENT)
>    from extconf.rb:45
>
>
> Gem files will remain installed in /var/lib/gems/1.8/gems/rjb-1.3.4 for
> inspection.
> Results logged to /var/lib/gems/1.8/gems/rjb-1.3.4/ext/gem_make.out
>
>
> Can anyone help me?
> Thank you!
>
>    

This kind of error almost always means you are missing some development 
files. Try

   sudo aptitude install  java-1.6.0-openjdk-devel

-Justin