bundledcucumberrunner.rb

module Cucumber
  module Rake
    class Task
      class BundledCucumberRunner #:nodoc:
        attr_reader :args

        def initialize(executable, cucumber_opts, feature_files)
          @args = (
            [`which bundle`.chomp, 'exec', executable]+
            cucumber_opts + 
            feature_files
          ).flatten.compact
        end
        
        def run
          ENV.delete('RUBYOPT')
          ENV.delete('BUNDLE_GEMFILE')
          ruby(*args)
        end
      end
    end

    class Task
      attr_accessor :bundle

      def initialize(task_name = "cucumber", desc = "Run Cucumber features")
        @task_name, @desc = task_name, desc
        @fork   = true
        @bundle = ENV.key?('BUNDLE_GEMFILE')
        @libs   = ['lib']
        @rcov_opts = %w{--rails --exclude osx\/objc,gems\/}

        yield self if block_given?

        @executable = @binary
        @binary     = @binary ? File.expand_path(@binary) : Cucumber::BINARY
        @libs.insert(0, LIB) if binary == Cucumber::BINARY

        define_task
      end

      def runner(task_args = nil) #:nodoc:
        cucumber_opts = [(ENV['CUCUMBER_OPTS'] ? ENV['CUCUMBER_OPTS'].split(/\s+/) : nil) || cucumber_opts_with_profile]
        if(@rcov)
          RCovCucumberRunner.new(libs, binary, cucumber_opts, feature_files, rcov_opts)
        elsif(@bundle)
          BundledCucumberRunner.new(@executable, cucumber_opts, feature_files)
        elsif(@fork)
          ForkedCucumberRunner.new(libs, binary, cucumber_opts, feature_files)
        else
          InProcessCucumberRunner.new(libs, cucumber_opts, feature_files)
        end
      end
    end
  end
end

mycucumbertasks.rake

require 'cucumber/rake/task'
require 'bundledcucumberrunner'

namespace :cucumber do
  Cucumber::Rake::Task.new({:default => ["...yourprerequisitetasks..."]}, 'Run with default profile') do |t|
    t.binary  = 'binary'
    t.bundle  = true
    t.profile = 'default'
  end
end