anchor.diff:  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%
positive.code: if not %errorlevel%==0 exit /b %errorlevel%
  
  rem -----------------------------------------------------------------------------
  rem -- build paho
  rem -----------------------------------------------------------------------------
  
  pushd %paho-build-root%
  
negative.code: if not %errorlevel%==0 exit /b %errorlevel%
  
  rem -----------------------------------------------------------------------------
  rem -- build OpenSSL 32 bits
  rem -----------------------------------------------------------------------------
  
  call "C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\vcvarsall.bat" x86 
  