Re: FindIlmbase.cmake & FindOpenEXR.cmake

This may be counterproductive to share, but...

I've been working with production CMake installations for years - since
beginning the Alembic project - and I have yet to get one to work
completely correctly. I have resorted, almost exclusively, to simply
hardcoding the locations of each of the libraries directly, and skipping
the "FindPackage" step altogether.  After spending about 3 days trying to
get the HDF5 Cmake file to actually correctly find the installation, I gave
up.

I'm really curious to hear if anyone has gotten CMake to work for real in a
complex production environment with multiple versions of things like boost,
python, and so on.  I note that every large organization I've seen (such as
Google, Facebook) just ports the builds to their proprietary build tools,
rather than using autoconf or cmake.

Am I alone in my failure to get CMake to work the way it is intended?

Chris

On Sat, Jan 23, 2016 at 9:25 AM, Larry Gritz <[email protected]> wrote:

> That would be great!
>
> Here are a few I found from "reputable" sources that presumably have seen
> a lot of use. It would be good to look them over and synthesize the best
> ideas into a canonical one that is as simple and robust as possible so
> nobody is tempted to modify it downstream.
>
> Intel:
> https://github.com/embree/embree/blob/master/common/cmake/FindOpenEXR.cmake
>
> NVIDIA texture tools:
> https://code.google.com/p/nvidia-texture-tools/source/browse/trunk/cmake/FindOpenEXR.cmake
>
> Blender:
> https://github.com/dfelinto/blender/blob/master/build_files/cmake/Modules/FindOpenEXR.cmake
>
> OpenSceneGraph:
> https://github.com/dfelinto/blender/blob/master/build_files/cmake/Modules/FindOpenEXR.cmake
>
>
>
> On Jan 23, 2016, at 12:37 AM, Ashley Whetter <[email protected]>
> wrote:
>
> I've already implemented a FindIlmBase and FindOpenExr in this pull
> request: https://github.com/openexr/openexr/pull/167
> Because ilmbase and openexr are built with cmake though, it's supposed to
> export itself as a package that can be used by find_package instead. I
> started an implementation of this earlier this week to replace the Find
> files in that pull request but not had time to finish it yet.
> As you're asking about it I'll make this a priority and try and get it
> finished asap. Because you're right, it's difficult to know what's best
> with no standard version.
>
> Ashley
> ------------------------------
> From: Piotr Stanczyk <[email protected]>
> Sent: ‎23/‎01/‎2016 07:19
> To: Larry Gritz <[email protected]>
> Cc: [email protected] [email protected]
> <[email protected]>
> Subject: Re: [Openexr-devel] FindIlmbase.cmake & FindOpenEXR.cmake
>
> I see your point ... google seems to come back with quite a few, alas.  I
> can see from the OIIO thread its not as easy as could be.
>
> I've logged an issue here : https://github.com/openexr/openexr/issues/176
>
> Thanks
>
> -Piotr
>
>
> On 22 January 2016 at 23:10, Larry Gritz <[email protected]> wrote:
>
>> These don't seem to be a standard bit of cmake yet, and so countless
>> divergent approaches to them can be found across a wide number of projects.
>> Just google "FindIlmbase.cmake".
>>
>> Is there any consensus on the best one? (It sure as heck isn't mine,
>> which I think is the single ugliest one that I've found yet, I'm
>> embarrassed to say, and I'd like to replace it and pretend my current one
>> never existed.)
>>
>> It would be great if a particularly good one was incorporated into the
>> ilmbase/openexr distribution itself as the canonical one that everybody
>> could use.
>>
>> --
>> Larry Gritz
>> [email protected]
>>
>>
>>
>> _______________________________________________
>> Openexr-devel mailing list
>> [email protected]
>> https://lists.nongnu.org/mailman/listinfo/openexr-devel
>>
>
>
> --
> Larry Gritz
> [email protected]
>
>
>
> _______________________________________________
> Openexr-devel mailing list
> [email protected]
> https://lists.nongnu.org/mailman/listinfo/openexr-devel
>
>

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