Forum: JRuby Rails installation question: jRuby and IBM J9 JVM

Announcement (2017-05-07): is now read-only since I unfortunately do not have the time to support and maintain the forum any more. Please see and for other Rails- und Ruby-related community platforms.
Pete Helgren (Guest)
on 2012-05-03 17:20
(Received via mailing list)
Running 'gem install rails'  with jRuby and the IBM J9 JVM
(running it what would be equivalent to an AIX environment) delivers
several of these kinds of messages:
executable? does not in this environment and will return a dummy value

Question #1: Is there a way to tell which gem it is complaining about?

After the gem installation I saw this error and then an ugly stack
30 gems installed
Installing ri documentation for i18n-0.6.0...
Got throwable in Signal initialisation :
Unknown signal: INFO
java.lang.IllegalArgumentException: Unknown signal: INFO

Question #2:
None of the ri documentation installed.  Not fatal but annoying.  Any
idea what causes this (well, any idea of what unknown signal INFO is?)

I posted similar errors with jRuby about 13 months ago but got no
response.  I am presenting a session on jRuby and Rails at a conference
next week and would sure like to have something to demo.  Way back in
the jRuby 1.4 days Rails 2.x would run fine so I don't know what exactly
has changed in jRuby, Rails and maybe the JVM that is now causing the

'rails new'  and bundler also generate similar warnings but in pressing
ahead I can start rails but get this error when rendering the default
"Welcome" page:
Error compiling asset rails.png:
NotImplementedError: stat.st_gid unsupported or native support failed to

Missing gem perhaps?

Anyway, any assistance in working through these gem errors would be

Pete Helgren
Value Added Software, Inc
GIAC Secure Software Programmer-Java
This topic is locked and can not be replied to.