If CMake gives you an error: "The C compiler "cl" is not able to compile a simple test program." You do not have VC++ installed. Even if Visual Studio is installed, you must ensure VC++ has been installed (an option during the Visual Studio installation).
Select Debug Exectuable
When you click "Start Debugging" in Visual Studio, if you get a dialog box asking you to specify a debug executable, you must right click on the project in the Solution Explorer and select "Set as startup project".