#4828 ruby-debug can't be installed on JRuby - Ruby on Rails

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#4828 ✓invalid

ruby-debug can't be installed on JRuby

Reported by Rohit Arondekar | June 11th, 2010 @ 03:41 AM

ruby-debug is included in the Gemfile for JRuby which causes the following on bundle install (in rails source):


WARNING: JRuby does not support native extensions or the `mkmf' library.
         Check http://kenai.com/projects/jruby/pages/Home for alternatives.

The full output is here => http://pastie.org/1000314

Removing ruby-debug from the Gemfile works. I don't know if there is an alternative to ruby-debug for JRuby. In case there isn't I've made a patch that removes ruby-debug for JRuby engine.

P.S Also in an app, gem sqlite3-ruby cannot be build, the alternative is to use gem 'activerecord-jdbcsqlite3-adapter' — but that needs to be done manually by the user I guess?

remove_ruby_debug_jruby.diff 598 Bytes

Comments and changes to this ticket

Santiago Pastorino June 13th, 2010 @ 05:18 AM
- State changed from “new” to “invalid”
You should follow the instructions here http://kenai.com/projects/jruby/pages/UsingTheJRubyDebugger to make it work.
Thank you for reporting ;).
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Anil Wadghule July 28th, 2010 @ 07:48 AM
- Importance changed from “” to “Low”
Santiago, I followed instructions in above page. I was able to install ruby-debug gem. But if you do 'bundle install' on rails source, you get this issue http://gist.github.com/493584
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Anil Wadghule July 28th, 2010 @ 08:05 PM
You can solve this by referring to https://gist.github.com/d6fffb7735f4bf6812f6
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Nick Sieger July 28th, 2010 @ 08:07 PM
See also this sequence of commands for bootstrapping JRuby to run Rails tests.

https://gist.github.com/d6fffb7735f4bf6812f6

The critical piece is to install ruby-debug-base-*-java.gem directly from a downloaded file, then "gem install ruby-debug --ignore-dependencies".

We also discovered that you need to remove Gemfile.lock before doing any of this.

I think we can consider this closed as far as Rails is concerned. We still need to have the 'java' version of ruby-debug-base released on rubygems.org as a platform-specific version of the main ruby-debug-base.