From: Charles Oliver Nutter <charles.nutter@...>
Date: 2008-08-12T01:26:44+09:00
Subject: Re: jruby and ubuntu and libgcj

Axel Etzold wrote:
> Dear all,
> 
> I have problems using jruby (1.1.3) on ubuntu 8.04, libgcj  4.2.3:
> 
> axel@alecrim:~$ jruby -v
> Exception in thread "main" java.lang.NoClassDefFoundError: org.jruby.Main
>    at gnu.java.lang.MainThread.run(libgcj.so.81)
> Caused by: java.lang.ClassNotFoundException: org.jruby.Main not found in gnu.gcj.runtime.SystemClassLoader{urls=[file:/usr/local/jruby-1.1.3/lib/bsf.jar,file:/usr/local/jruby-1.1.3/lib/profile.jar,file:./], parent=gnu.gcj.runtime.ExtensionClassLoader{urls=[], parent=null}}
>    at java.net.URLClassLoader.findClass(libgcj.so.81)
>    at gnu.gcj.runtime.SystemClassLoader.findClass(libgcj.so.81)
>    at java.lang.ClassLoader.loadClass(libgcj.so.81)
>    at java.lang.ClassLoader.loadClass(libgcj.so.81)
>    at gnu.java.lang.MainThread.run(libgcj.so.81)

As far as I know, JRuby 1.1.3 neither compiles nor runs on GCJ, mostly 
because it's missing several tools and libraries we need. We're 
certainly open to someone getting it running, but with all the Linux 
distros now providing installable OpenJDK-based JVMs, there's hasn't 
been much interest in getting GCJ to work.

- Charlie