anchor.diff:  
   :EXIT
   set PATH=%OLD_PATH%
  -cd %BACK%
  +cd /d %BACK%
   rem pause
   exit /b %EXITCODE%
  
positive.code: rem set DOWNLOAD="%CURL%" --remote-name-all
  
  if %build_boost% == 1 (
    cd %BOOST_ROOT%
    if not exist bjam.exe call bootstrap.bat
    if %ERRORLEVEL% NEQ 0 goto ERROR
    bjam toolset=msvc-14.0 variant=release link=static threading=multi runtime-link=static stage --with-date_time --with-filesystem --with-system --with-regex --with-signals --with-thread --with-locale
  
negative.code: )
  
  if %build_thirdparty% == 1 (
    cd /d %THIRDPARTY%
  
    echo building glog.
    cd %THIRDPARTY%\src\glog
    if not exist build mkdir build
  