code: def createStaticLibBuilder(env):
      
  
      try:
          static_lib = env['BUILDERS']['StaticLibrary']
      except KeyError:
          action_list = [ SCons.Action.Action("$ARCOM", "$ARCOMSTR") ]
          if env.get('RANLIB',False) or env.Detect('ranlib'):
              ranlib_action = SCons.Action.Action("$RANLIBCOM", "$RANLIBCOMSTR")
              action_list.append(ranlib_action)
  
          static_lib = SCons.Builder.Builder(action = action_list,
                                             emitter = '$LIBEMITTER',
                                             prefix = '$LIBPREFIX',
                                             suffix = '$LIBSUFFIX',
                                             src_suffix = '$OBJSUFFIX',
                                             src_builder = 'StaticObject')
          env['BUILDERS']['StaticLibrary'] = static_lib
          env['BUILDERS']['Library'] = static_lib
  
      return static_lib
docs: This is a utility function that creates the StaticLibrary
      Builder in an Environment if it is not there already.
  
      If it is already there, we return the existing one.