Can't install xmpp4r-simple

Hi, guys
I’m already install the xmpp4r gem, but can’t install xmpp4r-simple
gem,
version 0.3.2. What’s wrong ?

D:\ruby-workspace\learning>jruby -S gem install xmpp4r-simple
Building native extensions. This could take a while…
ERROR: Error installing xmpp4r-simple:
ERROR: Failed to build gem native extension.

D:/jruby-1.1.3/bin/jruby.bat extconf.rb install xmpp4r-simple
D:/jruby-1.1.3/lib/ruby/1.8/mkmf.rb:7: JRuby does not support native
extensions.
Check wiki.jruby.org for alternatives. (NotImplementedError)
from D:/jruby-1.1.3/lib/ruby/1.8/mkmf.rb:1:in `require’
from extconf.rb:1

Gem files will remain installed in D:/jruby-1.1.3
/lib/ruby/gems/1.8/gems/rcov-0.
8.1.2.0 for inspection.
Results logged to
D:/jruby-1.1.3/lib/ruby/gems/1.8/gems/rcov-0.8.1.2.0/ext/rcovr
t/gem_make.out

JRuby doesn’t support native extensions… yet…

On Thu, Jul 24, 2008 at 9:38 AM, Yin AnPing [email protected] wrote:

D:/jruby-1.1.3/lib/ruby/1.8/mkmf.rb:7: JRuby does not support native
D:/jruby-1.1.3/lib/ruby/gems/1.8/gems/rcov-0.8.1.2.0/ext/rcovr
t/gem_make.out


YaPEX
Shanghai, China
http://friendfeed.com/yapex


Aloha!

Mike McKinney
(http://blog.huikau.com)

Mike McKinney wrote:

JRuby doesn’t support native extensions… yet…

That yet is probably going to be never, unfortunately. There was some
initial work done by Wayne to provide a compatibility layer allowing us
to load and compile C extensions, but it can only go so far. This is the
same problem Rubinius is going to have…even with their “subtend”
layer, which serves a similar purpose, they’re never going to be able to
get all extensions running since many depend on internal object
structure.

The best bet for native extensions is one of the following:

  1. Tell the authors you want to run on JRuby, and if you know Java maybe
    offer to help create a Java backend.
  2. Suggest to the others they use a library like FFI that both JRuby and
    Rubinius support which allows calling C libraries from within Ruby very
    easily.

So largely, the best way to get these extensions supported on JRuby is
to use an existing Java library or to use a JRuby-friendly native layer
like FFI.

  • Charlie

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xmpp4r-simple doesn’t really need native extensions, it’s just the RDoc
dependency which makes this (if my memory is good). You have 2 choices :

I mean rcov not rdoc.

Hi,

xmpp4r-simple doesn’t really need native extensions, it’s just the RDoc
dependency which makes this (if my memory is good). You have 2 choices :

  • Unpack the gem, remove the RDoc dependency and rebuild it.
  • Unpack the gem, take the library (it’s just a file I think) and put it
    in
    your project.

thanks !

On Fri, Jul 25, 2008 at 6:45 AM, Charles Oliver N. <

Nicolas Mérouze wrote:

xmpp4r-simple doesn't really need native extensions, it's just the
RDoc dependency which makes this (if my memory is good). You have 2
choices :

I mean rcov not rdoc.

A dependency on rcov should probably be a dev-time-only dependency. I’d
recommend you file that as a bug with xmpp4r folks.

  • Charlie

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