# File lib/rubygems.rb, line 219
    def bindir(install_dir=Gem.dir)
      return File.join(install_dir, 'bin') unless
        install_dir.to_s == Gem.default_dir

      if defined? RUBY_FRAMEWORK_VERSION then # mac framework support
        '/usr/bin'
      else # generic install
        ConfigMap[:bindir]
      end
    end