Increasing Calligra minimum CMake version required

[C. Boemann]

On Sunday 16 August 2015 16:30:31 Stefano Bonicatti wrote:
> Hello, would it be a big issue to increase the minimum CMake version
> required from 2.8.0 to at least 2.8.12 or even 3.0?
> We have a little issue in Krita where using
> add_definitions(${KDE4_ENABLE_EXCEPTIONS}) gives an error when compiling it
> on Windows and VS2013.
> The problem is that the compiler flags contained in that variable spills
> into the rc compiler flags, and those are invalid for that compiler, so the
> compilation fails.
> Moreover add_definitions should be used only for defines not to add
> compiling flags but add_compile_options should be used, which is though
> available only from 2.8.12 and up.
> 
> As far as i know "all" maybe except CentOS, should have at least that
> version (for instance Debian stable has 3.0.2 already).
> The only real issue would be with packagers that want to compile latest
> Krita in older distros (what i don't know though is if they already have
> issues with other stuff, so that it's safe to update because no
> "regression" can happen).
> 
> I won't lie to you, this issue can also be solved by just setting
> CMAKE_CXX_FLAGS but this is a bit a dirty way to do it and it might get
> deprecated (shown by the fact that they're adding specific macros to add
> flags etc).
> Moreover do we really still have people testing the builds with CMake 2.8.0?
fine with me but not more than 3.0.2

Camilla