anchor.diff:  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 Example:
  +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   -- 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 do_cmake=0
  -set do_32=1
  -set do_64=1
  -if "%1"=="" goto no_args
  +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 do_cmake=1)
  -    echo.%%a | %WINDIR%\system32\find.exe "32">Nul && (set do_32=1)
  -    echo.%%a | %WINDIR%\system32\find.exe "64">Nul && (set do_64=1)
  +    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)
   )
  -:no_args
  -if %do_cmake%==0 (
  -    if %do_32%==0 (
  -        if %do_64%==0 (
  -            echo No valid parameters specified.
  -            exit /b 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
  
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:     pushd build
      echo Generating 64-bit CMake files for Visual Studio %VS_VERSION%
      cmake -G "Visual Studio %VS_VERSION% Win64" ..
      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
          )
      )
     
      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
  )
   
  