anchor.diff:  if errorlevel 1 exit 1
   
   :: Move dll's to LIBRARY_BIN
  -move %LIBRARY_LIB%\*vc%VSTRING%0-mt-%MAJ_MIN_VER%.dll "%LIBRARY_BIN%"
  +move %LIBRARY_LIB%\*vc%VS_MAJOR%0-mt-%MAJ_MIN_VER%.dll "%LIBRARY_BIN%"
   if errorlevel 1 exit 1
  -
  -
  -:TRIM
  -  SetLocal EnableDelayedExpansion
  -  set Params=%*
  -  for /f "tokens=1*" %%a in ("!Params!") do EndLocal & set %1=%%b
  -  exit /B
  
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: .\b2 install ^
      --build-dir=buildboost ^
      --prefix=%LIBRARY_PREFIX% ^
      toolset=msvc-%VS_MAJOR%.0 ^
      address-model=%ARCH% ^
      variant=release ^
      threading=multi ^
  