import SCons.Util

def generate(env) :
  def replacePragmaOnce(env, target, source) :
    f = open(str(target[0]), 'wb')
    f.write(source[0].get_contents())
    f.close()

  env["BUILDERS"]["WriteVal"] = SCons.Builder.Builder(
    action = SCons.Action.Action(replacePragmaOnce, cmdstr = "$GENCOMSTR"),
    single_source = True)

def exists(env) :
  return True

