anchor.diff:  )
   popd
   
  +rem End of subroutine DO_BUILD
   goto :EOF
  
positive.code:     call :USAGE
      goto :EOF
  )
  call :DO_BUILD
  goto :EOF
  
  
negative.code: @echo Usage: buildCpp.bat PLATFORM [rebuild]
  @echo PLATFORM is either 'Win32' or 'x64'.
  @echo If 'rebuild' is given, a full rebuild is performed.
  
  rem End of subroutine USAGE
  goto :EOF
  
  
  :SETUP_ENVIRONS
  rem Set up envirnoment variables for Visual C++
  
  rem First, clear the variables to which vcvarsall.bat will append items, so
  rem that we don't have any stray settings leaking in. (It should be safe to
  rem clear PATH because setlocal is in effect and the only external commands we
  rem invoke below are from VC++.)
  set PATH=
  set INCLUDE=
  set LIB=
  set LIBPATH=
  
  set BOOT_DRIVE=%windir:~0,2%
  if "%BOOT_DRIVE%"=="" set BOOT_DRIVE=C:
  