# class Gem::Ext::RakeBuilder

### Public Class Methods

build (extension, dest_path, results, args=[], lib_dir=nil, extension_dir=Dir.pwd, target_rbconfig=Gem.target_rbconfig)
Source

    # File lib/rubygems/ext/rake_builder.rb, line 12
    def self.build(extension, dest_path, results, args=[], lib_dir=nil, extension_dir=Dir.pwd,
      target_rbconfig=Gem.target_rbconfig)
      if target_rbconfig.path
        warn "--target-rbconfig is not yet supported for Rake extensions. Ignoring"
      end

      if /mkrf_conf/i.match?(File.basename(extension))
        run([Gem.ruby, File.basename(extension), *args], results, class_name, extension_dir)
      end

      rake = ENV["rake"]

      if rake
        rake = Shellwords.split(rake)
      else
        begin
          rake = 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, class_name, extension_dir)

      results
    end