On Wed, Jul 7, 2021 at 2:36 PM Neal Gompa <ngompa13@xxxxxxxxx> wrote:
On Wed, Jul 7, 2021 at 3:32 PM Richard Shaw <hobbes1069@xxxxxxxxx> wrote:
>
> I had a hard time trying to describe what I'm talking about, perhaps there's actually a term for it, but as I go through all the dependencies of OpenEXR I wanted to know if this is a problem or not which I think is best shown by example:
>
> So part of the dependency chain for blender is:
> Blender
> ---> OpenEXR
> ---> OpenVDB
> ---> OpenEXR
>
> So is it OK for OpenVDB to link against OpenEXR 2.x (openexr2) while Blender links with OpenEXR 3.x? Or does the whole dependency stack need to be upgraded at one time?
>
Generally, they need to be upgraded together because if they're all
operating in one process, you can have program code from OpenEXR 2 and
OpenEXR 3 colliding in the Blender process and causing things to go
haywire.
That's what I was afraid of. I'm doing my best to make sure I notice dependency chains like this but it's completely manual and could be error prone. There seem to be a lot of kde 4 related dependencies, some of them seem to build with OpenEXR 3.x but I think I'll keep the whole stack at 2.x just to be safe.
Thanks,
Richard
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