anchor.diff:    goto end
   
   :check_cygwin
  +if defined CYGWIN_HOME (
  +  if not exist "%CYGWIN_HOME%" (
  +    @echo.
  +    @echo !!! WARNING !!! CYGWIN_HOME not found, gcc build may not be used !!!
  +    @echo.
  +  )
  +) else (
     if exist c:\cygwin (
       set CYGWIN_HOME=c:\cygwin
     ) else (
  
positive.code:     @echo !!! WARNING !!! No CYGWIN_HOME set, gcc build may not be used !!!
      @echo.
    )
  
  if NOT "%1"=="" goto Usage
  goto end
  
  :Usage
    @echo.
  
negative.code:   @echo         Reconfig       Reinstall target.txt, tools_def.txt and build_rule.txt.
    @echo.
    @echo  Note that target.template, tools_def.template and build_rules.template
    @echo  will only be copied to target.txt, tools_def.txt and build_rule.txt
    @echo  respectively if they do not exist. Use option [Reconfig] to force the copy.
    @echo.
    goto end
  
  