CMake and Visual Studio

[AngusJohnson]

Thanks Nicolas.
I've merged your changes which look just fine.
Howevr, I'm a complete novice with CMake so there's an element of trust there 😁😱🤞🙏.
And on that note, how do I get CMake to generate solution files so that Visual Studio will compile and execute the examples.
I'm sure there are online examples re using CMake in VS but I'm hoping you can provide a "quick and dirty" explanation that's specific to your modified CMakeLists.txt. I've gotten as far as

option(CLIPPER2_UTILS "Build utilities" ON)
option(CLIPPER2_EXAMPLES "Build examples" ON)
option(CLIPPER2_TESTS "Build tests" ON)

but no further. Cheers.

ps: I'm also going to need a reasonably thorough explanation that I can add to the documentation as I suspect many Visual Studio users will be having similar difficulties. (And I'm also hoping that you might include something in CMakeLists.txt that would automate building *.sln and *.proj files.)

Edit: For some reason I don't understand, it now seems to be working.

Originally posted by @AngusJohnson in #169 (comment)