SIMATIC WinCC Open Architecture Forum

I'm trying creating a Driver for WinCCOA v3.14.
I'm working with Visual Studio 2013.
(In my computer, VS2010, VS2013 and VS2015 are installed)

And I try to run checkAPIenv.cmd using vcvarsall.bat.

but below message is occurred.

** cannot determine 'cl' compiler version! Maybe no compiler or wrong compiler version installed. VC12 expected.

How can I solve this problem?

In the same shell, what is the output of the "cl" command?

Here it is:
Microsoft (R) C/C++ Optimizing Compiler Version 18.00.30501 for x64
Copyright (C) Microsoft Corporation. All rights reserved.

usage: cl [ option... ] filename... [ /link linkoption... ]