[PROJ] Bump CMake version for PROJ 7.0

[Thomas Knudsen]

+1

fre. 31. jan. 2020 09.00 skrev Kristian Evers <kreve at sdfe.dk>:

> I think a bump to 3.9 is a good idea. Per RFC3 we need the PSC to approve
> this,
> so let's have a motion on the subject.
>
> I'll start with my +1
>
> /Kristian
>
> -----Original Message-----
> From: PROJ <proj-bounces at lists.osgeo.org> On Behalf Of Mike Taves
> Sent: 30. januar 2020 22:15
> To: proj at lists.osgeo.org
> Subject: Re: [PROJ] Bump CMake version for PROJ 7.0
>
> Any further discussion? Is a bump to CMake 3.9 OK for everyone?
>
> Note there was recently a bit of discussion on a GitHub ticket:
> https://github.com/OSGeo/PROJ/issues/1858#issuecomment-576718862
>
> On Tue, 14 Jan 2020 at 09:49, Mike Taves <mwtoews at gmail.com> wrote:
> >
> > Hi all,
> >
> > As was suggested in https://github.com/OSGeo/PROJ/pull/1542 this is a
> > discussion to bump the minimum CMake version for PROJ 7.0
> >
> > Based on the default versions of CMake [1], I can see that CMake 3.9
> > is installed on most development systems, including Travis CI, so this
> > would be an ideal minimum.
> >
> > CMake 3.9.0 was released [2] July 2017, so is at least 2 years old for
> > PROJ RFC 3's requirement.
> >
> > One feature from this version that I plan to implement is
> > CheckIPOSupported [3] module. GoogleTest [4] was added for this
> > release, however I don't think it would provide any advantage.
> >
> > Any other thoughts or suggestions on other CMake versions?
> >
> > Cheers,
> > Mike
> >
> > [1]
> https://cliutils.gitlab.io/modern-cmake/chapters/intro/installing.html#cmake-default-versions
> > [2] https://blog.kitware.com/cmake-3-9-0-available-for-download/
> > [3] https://cmake.org/cmake/help/v3.9/module/CheckIPOSupported.html
> > [4] https://cmake.org/cmake/help/v3.9/module/GoogleTest.html
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