[CMake] FindOpenEXR.cmake inclusion in cmake modules?

[Campbell Barton]

2011/6/16 Alexander Neundorf <a.neundorf-work at gmx.net>:
> On Thursday 16 June 2011, David Cole wrote:
>> First, ask if the module is really necessary. If, instead, you can add an
>> OpenEXRConfig.cmake file to the OpenEXR project itself, and install it in a
>> place that cmake's find_package will automatically find it, then a find
>> module is unnecessary.
>>
>> However, if that's not possible or practical, then...
>>
>> Follow the directions here on becoming a module maintainer:
>>
>>   http://www.cmake.org/Wiki/CMake:Module_Maintainers
>>
>> If anything is unclear, ask here for clarification.
>>
>>
>> Thanks,
>> David

Is writing a ***Config.cmake file documented?, does this rely on
OpenEXR using cmake for their builds?
I wasn't aware of this.

>> On Wed, Jun 15, 2011 at 11:25 PM, Campbell Barton
> <ideasman42 at gmail.com>wrote:
>> > Recently I decided to start moving some of our projects hard coded
>> > paths into Find***.cmake modules.
>> >
>> > Incidentally the libs are libsamplerate, libFFTW3, libsndfile,
>> > libjemalloc, OpenEXR, OpenJPEG, libpcre.
>> >
>> > I started out with OpenEXR, and tried to comply with the module
>> > readme.txt, and used FindTIFF/Boost/OpenGL as references too.
>> >
>> > Heres the module,
>> >
>> > https://svn.blender.org/svnroot/bf-blender/trunk/blender/build_files/cmak
>> > e/Modules/FindOpenEXR.cmake
>
> I think you should not need to set _openexr_SEARCH_DIRS, I think all these
> paths are included in the standard search paths.

does this work for FIND_PATH as well as FIND_LIBRARY?

>> >
>> > _after_ writing this I found that there are 3 other projects who also
>> > wrote their own FindOpenEXR.cmake modules,
>> >
>> >
>> > http://code.google.com/p/nvidia-texture-tools/source/browse/trunk/cmake/F
>> > indOpenEXR.cmake?r=HEAD
>> >
>> > http://www.openscenegraph.org/projects/osg/browser/OpenSceneGraph/trunk/C
>> > MakeModules/FindOpenEXR.cmake?rev=HEAD
>> > http://www.openlibraries.org/browser/trunk/FindOpenEXR.cmake
>
> And another one:
> http://quickgit.kde.org/?p=kdelibs.git&a=blob&h=405b892d436823ac3b102b4eb0a1126bc168aec7&hb=9be5b41d4e933d019d3d30cead9143b3703d10f4&f=cmake/modules/FindOpenEXR.cmake
>
> Alex

Noticed KDE's FineOpenEXR.cmake uses pkg-config, Is this considered
best practice?

-- 
- Campbell