And we won't be able to, anytime soon. The linecache C extension uses node.h to 
be able to go through a ruby tree, which we can't support properly.

On Nov 7, 2010, at 12:01 AM, Hirotsugu Asari wrote:

> linecache… we can't build it.
> 
> On Nov 6, 2010, at 6:23 PM, [email protected] wrote:
> 
> 
>> Installing linecache (0.43) with native extensions 
>> /builds/jruby/latest/lib/ruby/site_ruby/1.8/rubygems/installer.rb:483:in 
>> `build_extensions': ERROR: Failed to build gem native extension. 
>> (Gem::Installer::ExtensionBuildError)
>> 
>> /builds/jruby/latest/bin/jruby extconf.rb 
>> WARNING: JRuby does not support native extensions or the `mkmf' library very 
>> well.
>> Check http://kenai.com/projects/jruby/pages/Home for alternatives.
>> mkmf.rb can't find header files for ruby at 
>> /builds/jruby/latest/lib/native/include/ruby/ruby.h
>> 
>> 
>> Gem files will remain installed in /data/home/gems/1.8/gems/linecache-0.43 
>> for inspection.
>> Results logged to /data/home/gems/1.8/gems/linecache-0.43/ext/gem_make.out
>> 
>>      from 
>> /builds/jruby/latest/lib/ruby/site_ruby/1.8/rubygems/installer.rb:446:in 
>> `each'
>>      from 
>> /builds/jruby/latest/lib/ruby/site_ruby/1.8/rubygems/installer.rb:446:in 
>> `build_extensions'
>>      from 
>> /builds/jruby/latest/lib/ruby/site_ruby/1.8/rubygems/installer.rb:198:in 
>> `install'
>>      from /data/gems/1.8/gems/bundler-1.0.3/lib/bundler/source.rb:100:in 
>> `install'
>>      from /data/gems/1.8/gems/bundler-1.0.3/lib/bundler/installer.rb:55:in 
>> `run'
>>      from /data/gems/1.8/gems/bundler-1.0.3/lib/bundler/spec_set.rb:12:in 
>> `each'
>>      from /data/gems/1.8/gems/bundler-1.0.3/lib/bundler/spec_set.rb:12:in 
>> `each'
>>      from /data/gems/1.8/gems/bundler-1.0.3/lib/bundler/installer.rb:44:in 
>> `run'
>>      from /data/gems/1.8/gems/bundler-1.0.3/lib/bundler/installer.rb:8:in 
>> `install'
>>      from /data/gems/1.8/gems/bundler-1.0.3/lib/bundler/cli.rb:267:in 
>> `update'
>>      from 
>> /data/gems/1.8/gems/bundler-1.0.3/lib/bundler/vendor/thor/task.rb:21:in `run'
>>      from 
>> /data/gems/1.8/gems/bundler-1.0.3/lib/bundler/vendor/thor/invocation.rb:118:in
>>  `invoke_task'
>>      from 
>> /data/gems/1.8/gems/bundler-1.0.3/lib/bundler/vendor/thor.rb:246:in 
>> `dispatch'
>>      from 
>> /data/gems/1.8/gems/bundler-1.0.3/lib/bundler/vendor/thor/base.rb:389:in 
>> `start'
>>      from /data/gems/1.8/gems/bundler-1.0.3/bin/bundle:13
>>      from /data/gems/1.8/gems/bundler-1.0.3/bin/bundle:19:in `load'
>>      from /data/gems/1.8/bin/bundle:19
>> Recording test results
>> 
> 
> 
> 
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