[LLVMdev] [RFC] Raise minimum required CMake version to 3.0

[Chandler Carruth]

On Mon, Feb 9, 2015 at 11:12 AM, Chris Bieneman <beanz at apple.com> wrote:

> It came up on another thread that our current minimum required CMake
> version 2.8.8, has some bugs that cause issues when building with MSVC +
> Ninja, and one potential solution was to raise the minimum required version
> of CMake.
>
> CMake 3.0 is now 6 months old and CMake 3.1 has been released. I would
> like to propose moving our minimum required CMake version to 3.0.
>
> I’ve attached patches to enforce the change in case anyone wants to test
> it out.
>
> Thoughts/comments/concerns/objections?
>

What is the latest version of CMake available for supported LTS versions of
ubuntu? The analogous other linux distros? I think if we can, we should
preserve support for their pre-installed CMake versions to make
bootstrapping easier.

I think it is fine to let folks that want to use Ninja on Windows grab a
more recent CMake -- this shouldn't block the 2013 stuff at all.
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