anchor.diff:      pushd build
       echo Generating 64-bit CMake files for Visual Studio %VS_VERSION%
       cmake -G "Visual Studio %VS_VERSION% Win64" ..
  -    echo Building 64-bit Debug 
  -    msbuild ALL_BUILD.vcxproj /p:Platform=x64 /p:Configuration=Debug /maxcpucount /verbosity:quiet
  -    if errorlevel 1 (
  -       echo.
  -       echo 64-bit Debug build failed!
  -       popd
  -       exit /b 1
  -    )   
  +    if %do_debug% equ 1 (
  +        echo Building 64-bit Debug 
  +        msbuild ALL_BUILD.vcxproj /p:Platform=x64 /p:Configuration=Debug /maxcpucount /verbosity:quiet
  +        if errorlevel 1 (
  +        echo.
  +        echo 64-bit Debug build failed!
  +        popd
  +        exit /b 1
  +        )
  +    )
      
  -    echo Building 64-bit Release 
  -    msbuild ALL_BUILD.vcxproj /p:Platform=x64 /p:Configuration=Release /maxcpucount /verbosity:quiet
  -    if errorlevel 1 (
  -       echo.
  -       echo 64-bit Release build failed!
  -       popd
  -       exit /b 1
  -    )   
  +    if %do_release%==1 (
  +        echo Building 64-bit Release 
  +        msbuild ALL_BUILD.vcxproj /p:Platform=x64 /p:Configuration=Release /maxcpucount /verbosity:quiet
  +        if errorlevel 1 (
  +        echo.
  +        echo 64-bit Release build failed!
  +        popd
  +        exit /b 1
  +        )
  +    )
       popd
   )
    
  
positive.code:     pushd build32
      echo Generating 32-bit CMake files for Visual Studio %VS_VERSION%
      cmake -G "Visual Studio %VS_VERSION%" ..
      echo Building 32-bit Debug 
      msbuild ALL_BUILD.vcxproj /p:Platform=x86 /p:Configuration=Debug /maxcpucount /verbosity:quiet
      if errorlevel 1 (
         echo.
         echo 32-bit Debug build failed!
         popd
         exit /b 1
      )   
         
      echo Building 32-bit Release 
      msbuild ALL_BUILD.vcxproj /p:Platform=x86 /p:Configuration=Release /maxcpucount /verbosity:quiet
      if errorlevel 1 (
         echo.
         echo 32-bit Release build failed!
         popd
         exit /b 1
      )   
      popd
  )
  exit /b 0
  
negative.code: REM     cmake (case insensitive): Deletes build and build32 and runs just CMake on both
  REM     32: Deletes build32, runs CMake and builds 32-bit versions
  REM     64: Deletes build, runs CMake and builds 64-bit versions
  REM     debug (case insensitive): Builds just the debug config of a 32 and/or 64-bit build
  REM     release (case insensitive): Builds just the release config of a 32 and/or 64-bit build
  REM Notes:
  REM cmake: When specified, generate the CMake build files only - don't compile
  REM 32/64: Specifying neither or both builds both
  REM debug/release: Specifying neither or both builds both
  REM Examples:
  REM build_windows_targets.bat 64
  REM   -- deletes build, creates build, runs CMake and compiles 64-bit Debug and Release.
  REM build_windows_targets.bat 64 debug
  REM   -- deletes build, creates build, runs CMake and compiles 64-bit Debug.
  
  set arg_cmake=0
  set arg_32=0
  set arg_64=0
  set arg_debug=0
  set arg_release=0
  
  set do_cmake=0
  set do_32=0
  set do_64=0
  set do_debug=0
  set do_release=0
  
  for %%a in (%*) do (
      echo.%%a | %WINDIR%\system32\find.exe /I "cmake">Nul && (set arg_cmake=1)
      echo.%%a | %WINDIR%\system32\find.exe "32">Nul && (set arg_32=1)
      echo.%%a | %WINDIR%\system32\find.exe "64">Nul && (set arg_64=1)
      echo.%%a | %WINDIR%\system32\find.exe /I "debug">Nul && (set arg_debug=1)
      echo.%%a | %WINDIR%\system32\find.exe /I "release">Nul && (set arg_release=1)
  )
  
  if %arg_32%==1 (
      set do_32=1
  )
  if %arg_64%==1 (
      set do_64=1
  )
  if %arg_32%==0 (
      if %arg_64%==0 (
          set do_32=1
          set do_64=1
      )
  )
  
  if %arg_debug%==1 (
      set do_debug=1
  )
  if %arg_release%==1 (
      set do_release=1
  )
  if %arg_debug%==0 (
      if %arg_release%==0 (
          set do_debug=1
          set do_release=1
      )
  )
  
  if %arg_cmake%==1 (
      set do_cmake=1
      set do_32=0
      set do_64=0
      set do_debug=0
      set do_release=0
  )
  
  REM Determine the appropriate CMake strings for the current version of Visual Studio
  