Re: OpenColorIO 2.0 and libHalf

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On Mon, 2021-08-23 at 01:20 -0700, Luya Tshimbalanga wrote:
> On 2021-08-23 12:46 a.m., Josef Řídký wrote:
> > There should not be any reason to have the ilmbase package as separate 
> > one, because this package has been incorporated into the openexr 
> > package itself (in version 3).
> > 
> > As per libHalf, this functionality has been moved into a new package 
> > imath, that was introduced by upstream with release of openexr 3 and 
> > is available in Fedora now.
> > 
> Unfortunately, building OpenColorIO 2.0 failed to properly detect 
> libHalf despite the inclusion of imath.
> 
> Extract below:
> 
> ~~
> 
> -- Found yaml-cpp: /usr/lib64/libyaml-cpp.so.0.6.3 (found suitable version "0.6.3", minimum required is "0.6.3")
> CMake Error at /usr/share/cmake/Modules/FindPackageHandleStandardArgs.cmake:230 (message):
>    Could NOT find Half (missing: Half_LIBRARY Half_INCLUDE_DIR) (Required is
>    at least version "2.4.0")
> Call Stack (most recent call first):
>    /usr/share/cmake/Modules/FindPackageHandleStandardArgs.cmake:594 (_FPHSA_FAILURE_MESSAGE)
>    share/cmake/modules/FindHalf.cmake:119 (find_package_handle_standard_args)
>    share/cmake/modules/FindExtPackages.cmake:37 (find_package)
>    CMakeLists.txt:239 (include)

There's already a bug report covering a bunch of this stuff:

https://bugzilla.redhat.com/show_bug.cgi?id=1932124

to make OpenColorIO happy with libHalf from imath you need an upstream
PR:

https://github.com/AcademySoftwareFoundation/OpenColorIO/pull/1432

but then you still have to resolve the issue of Krita wanting older
OpenColorIO. Richard is trying to get everything singing from the same
hymn sheet ATM, I think.
-- 
Adam Williamson
Fedora QA
IRC: adamw | Twitter: adamw_ha
https://www.happyassassin.net

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