anchor.diff:  .\b2 install ^
       --build-dir=buildboost ^
       --prefix=%LIBRARY_PREFIX% ^
  -    toolset=msvc-%VSTRING%.0 ^
  +    toolset=msvc-%VS_MAJOR%.0 ^
       address-model=%ARCH% ^
       variant=release ^
       threading=multi ^
  
positive.code: :: Set the right msvc version according to Python version
  REM write a temporary batch file to map cl.exe version to visual studio version
  echo @echo 15=9 > msvc_versions.bat
  echo @echo 16=10 >> msvc_versions.bat
  echo @echo 17=11 >> msvc_versions.bat
  echo @echo 18=12 >> msvc_versions.bat
  echo @echo 19=14 >> msvc_versions.bat
  
  REM Run cl.exe to find which version our compiler is
  for /f "delims=" %%A in ('cl /? 2^>^&1 ^| findstr /C:"Version"') do set "CL_TEXT=%%A"
  FOR /F "tokens=1,2 delims==" %%i IN ('msvc_versions.bat') DO echo %CL_TEXT% | findstr /C:"Version %%i" > nul && set VSTRING=%%j && goto FOUND
  EXIT 1
  :FOUND
  
  call :TRIM VSTRING %VSTRING%
  
  :: Start with bootstrap
  call bootstrap.bat
  if errorlevel 1 exit 1
  
negative.code: if errorlevel 1 exit 1
  
  :: Move dll's to LIBRARY_BIN
  move %LIBRARY_LIB%\*vc%VS_MAJOR%0-mt-%MAJ_MIN_VER%.dll "%LIBRARY_BIN%"
  if errorlevel 1 exit 1
  