Installing Cucumber on IronRuby (native json issue)

Question

I am trying to install Cucumber on IronRuby 1.1.3 using gem install cucumber but I keep getting the following error:

Building native extensions.  This could take a while...
ERROR:  Error installing cucumber:
        ERROR: Failed to build gem native extension.

"d:/Program Files (x86)/IronRuby 1.1/bin/ir.exe" extconf.rb
d:/Program Files (x86)/IronRuby 1.1/Lib/ruby/1.9.1/mkmf.rb:9:in `const_missing':
 uninitialized constant RbConfig::MAKEFILE_CONFIG (NameError)
        from d:/Program Files (x86)/IronRuby 1.1/Lib/ruby/1.9.1/mkmf.rb:9
        from d:/Program Files (x86)/IronRuby 1.1/Lib/ruby/1.9.1/rubygems/custom_
require.rb:29:in `require'
        from d:/Program Files (x86)/IronRuby 1.1/Lib/ruby/1.9.1/rubygems/custom_
require.rb:29:in `require'
        from extconf.rb:1

Nat Ritmeyer Nat Ritmeyer · Accepted Answer · 2012-09-17T22:00:12

Here's the problem:

Failed to build gem native extension

Some gems when they get installed compile C extensions as part of the process; the above library is one of them. Other examples are Nokogiri and Gherkin. The resulting libraries are not .net-based and as such can't be used by IronRuby. IronRuby only deals in managed code so you can only use 'pure' ruby gems, or .net DLLs.

Installing Cucumber on IronRuby (native json issue)

1 Answers