I don't see why we would have to preserve 2.x compatibility. USD seems to need 
CMake 3.1 on Windows. OpenVDB needs 3.1. OIIO and OSL both require 3.2. Partio 
requires 3.8!  So lack of support for 2.x would be in good company with other 
widely used packages.

A few people have commented on the VFX Platform forum that it should include a 
minimum cmake release, so that package maintainers can count on some reasonable 
minimum. 



> On Jul 13, 2018, at 3:50 PM, Nick Porcino <mesh...@hotmail.com> wrote:
> 
> The develop branch of OpenEXR uses CMake 3 features. So that line is an error.
> 
> I hadn't thought about it, but it's troubling* to think that we might have to 
> preserve compatibility with CMake 2.x
> 
> * troubling == sobbing in terror in the corner as the shambling revenant 
> shadow of CMake 2 groans and lurches forward belching broken features and ad 
> hoc syntax
> 
> 
> From: Openexr-devel <openexr-devel-bounces+meshula=hotmail....@nongnu.org 
> <mailto:openexr-devel-bounces+meshula=hotmail....@nongnu.org>> on behalf of 
> Larry Gritz <l...@larrygritz.com <mailto:l...@larrygritz.com>>
> Sent: Friday, July 13, 2018 11:47 AM
> To: openexr-devel@nongnu.org <mailto:openexr-devel@nongnu.org>
> Subject: [Openexr-devel] CMAKE_CXX_STANDARD
>  
> Is anybody troubled by the fact that the OpenEXR CMakeLists.txt starts with
> 
> CMAKE_MINIMUM_REQUIRED(VERSION 2.8)
> 
> but then makes use of CMAKE_CXX_STANDARD, which was only introduced with 
> CMake 3.1?
> 
> So I think that if anybody actually uses CMake < 3.1, it will just silently 
> fail to provide the right -std=c++XX flags.
> 
> 
> --
> Larry Gritz
> l...@larrygritz.com <mailto:l...@larrygritz.com>
> 
> 
> 
> 
> 
> _______________________________________________
> Openexr-devel mailing list
> Openexr-devel@nongnu.org <mailto:Openexr-devel@nongnu.org>
> https://lists.nongnu.org/mailman/listinfo/openexr-devel 
> <https://lists.nongnu.org/mailman/listinfo/openexr-devel>
--
Larry Gritz
l...@larrygritz.com




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