[CMake] Windows Visual Studio 13 with Ninja & CMake

[Michael Jackson]

My combination is Windows 10 (Anniversary Update), Visual Studio 12 2013 
Update 5, Ninja and CMake 3.5/3.6.

I launch CMake-GUI.exe, select my Source and binary directories and then 
"Configure", select "Ninja" as the generator and then I instantly get 
the error that CMake can not find the C/C++ compilers. I do not recall 
ever having this issue. I just recently updated Windows 10 to the latest 
so I am not sure if that caused something to go wrong? I use the 
"Zipped" version of CMake if that makes a difference. I did have to 
install the "Windows 8.1 SDK" in order for QtCreator to work correctly.

I can successfully do the following:
* Configure and generate from the command line for Ninja
* Use the CMake-Gui to generate a VS 12 2013 solution file without any 
issues.
* QtCreator 4.1 can use ninja to properly generate its own projects with 
a correctly detected compiler.

Thoughts?
-- 
Michael A. Jackson
BlueQuartz Software