def METHOD_NAME(conf):
	if (conf.options.with_pch and conf.env['COMPILER_CXX'] in PCH_COMPILER_OPTIONS.keys()):
		conf.env.WITH_PCH = True
		flags = PCH_COMPILER_OPTIONS[conf.env['COMPILER_CXX']]
		conf.env.CXXPCH_F = flags[0]
		conf.env.CXXPCH_EXT = flags[1]
		conf.env.CXXPCH_FLAGS = flags[2]