anchor.diff:    set PLATFORM_TOOLSET=v141_xp
   )
   
  +set clean=0
   set build_dir_base=build
   set build_dir_suffix=
   set build_config=Release
  
positive.code: goto parse_cmdline_options
  :end_parsing_cmdline_options
  
  if %build_librime% == 0 (
  if %build_boost% == 0 (
  if %build_thirdparty% == 0 (
    set build_librime=1
  )))
  
  set build_dir=%build_dir_base%%build_dir_suffix%
  
  
negative.code: 
  :parse_cmdline_options
  if "%1" == "" goto end_parsing_cmdline_options
  if "%1" == "clean" set clean=1
  if "%1" == "boost" set build_boost=1
  if "%1" == "boost_x64" (
    set build_boost=1
  