> if I (accidentally, or through ignorance) write code that would only work in
> CMake 3.x but not in 2.8.12, will the build fail or should I make sure to
> install 2.8.12 and test using that? if I ended up using an entirely new
> command that did not exist at the time of 2.8.12, but does exist in 3.10 of
> my installed CMake, should the build fail or succeed?
The in both cases if you have CMake 3.X installed the
configure/generate of your project will succeed. You will need to
install CMake 2.8.12 and test with that.
> Policy logic
You are correct about policy guards allowing older versions of CMake
to safely ignore policies from new releases, while people running
newer versions of CMake can leverage those ( generally the performance
related policies ).
On Tue, Apr 3, 2018 at 12:38 PM, Stephen McDowell wrote:
> Hello,
>
> Suppose I have a cmake_minimum_required(VERSION 2.8.12) project I would like
> to contribute to.
>
> So when I am testing code for a v2.8.12 project, but my installed CMake
> version is say 3.10, if I (accidentally, or through ignorance) write code
> that would only work in CMake 3.x but not in 2.8.12, will the build fail or
> should I make sure to install 2.8.12 and test using that?
>
> For example, my understanding is that for things like policies, I can do
>
> if (POLICY CMP)
> cmake_policy(SET CMP NEW)
> endif()
>
> and this will mean that an older version of CMake running this code that
> does not know about policy will still work. But if I ended up using an
> entirely new command that did not exist at the time of 2.8.12, but does
> exist in 3.10 of my installed CMake, should the build fail or succeed?
>
> Thanks for any guidance, I’m sorry if this question doesn’t make any sense…
>
> -Stephen
>
>
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information on each offering, please visit:
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