build

# File lib/rubygems/ext/rake_builder.rb, line 12
  def self.build(extension, dest_path, results, args=[], lib_dir=nil)
    if File.basename(extension) =~ /mkrf_conf/
      run([Gem.ruby, File.basename(extension), *args], results)
    end

    rake = ENV['rake']

    if rake
      rake = rake.shellsplit
    else
      begin
        rake = [Gem.ruby, "-rrubygems", Gem.bin_path('rake', 'rake')]
      rescue Gem::Exception
        rake = [Gem.default_exec_format % 'rake']
      end
    end

    rake_args = ["RUBYARCHDIR=#{dest_path}", "RUBYLIBDIR=#{dest_path}", *args]
    run(rake + rake_args, results)

    results
  end