class TestBuilder < Rscons::Builder
  def run(options)
    if @target == "two"
      return false unless File.exists?("one")
    end
    wait_time = @env.expand_varref("${wait_time}", @vars)
    command = ["ruby", "-e", "require 'fileutils'; sleep #{wait_time}; FileUtils.touch('#{@target}');"]
    standard_threaded_build("TestBuilder", @target, command, [], @env, @cache)
  end

  def finalize(options)
    standard_finalize(options)
  end
end

build do
  Environment.new do |env|
    env.add_builder(TestBuilder)
    one = env.TestBuilder("one", [], "wait_time" => "3")
    two = env.TestBuilder("two", [], "wait_time" => "0")
    env.depends(two, one)
  end
end