anchor.diff:  if not %errorlevel%==0 exit /b %errorlevel%
   
   rem -----------------------------------------------------------------------------
  -rem -- build OpenSSL
  +rem -- build OpenSSL 32 bits
   rem -----------------------------------------------------------------------------
   
   call "C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\vcvarsall.bat" x86 
  
positive.code: if not %errorlevel%==0 exit /b %errorlevel%
  
  rem -----------------------------------------------------------------------------
  rem -- build paho
  rem -----------------------------------------------------------------------------
  
  pushd %paho-build-root%
  
negative.code: exit /b 1
  :paho_build_done
  if not %errorlevel%==0 exit /b %errorlevel%
  
  rem -----------------------------------------------------------------------------
  rem -- build OpenSSL 64 bits
  rem -----------------------------------------------------------------------------
  
  call "C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\vcvarsall.bat" amd64 
  if not %errorlevel%==0 exit /b %errorlevel%
  
  pushd %openSSL-build-root%
  perl Configure VC-WIN64A
  if not %errorlevel%==0 exit /b %errorlevel%
  
  call ms\do_win64a
  if not %errorlevel%==0 exit /b %errorlevel%
  
  call nmake -f ms\ntdll.mak clean
  if not %errorlevel%==0 exit /b %errorlevel%
  
  call nmake -f ms\ntdll.mak
  if not %errorlevel%==0 exit /b %errorlevel%
  
  mkdir out64dll
  xcopy /q /y /R .\out32dll\*.* .\out64dll\*.*
  if %errorlevel% neq 0 exit /b %errorlevel%