[MacPorts] #67500: blender @2.93.17: fatal error: 'half.h' file not found (was: blender doesn't compile, errors out at alembic)

[MacPorts]

#67500: blender @2.93.17: fatal error: 'half.h' file not found
----------------------+------------------------
  Reporter:  elteck   |      Owner:  jasonliu--
      Type:  defect   |     Status:  assigned
  Priority:  Normal   |  Milestone:
 Component:  ports    |    Version:  2.8.1
Resolution:           |   Keywords:
      Port:  blender  |
----------------------+------------------------

Old description:

> See attached log file, blender does not compile, errors out on intel
> platform. The log file doesn't give a lot of details, it shows errors on
> alembic and openxr:
>
> :info:build make[2]: ***
> [source/blender/io/alembic/CMakeFiles/bf_alembic.dir/intern/abc_customdata.cc.o]
> Error 1
>
> :info:build make[2]: ***
> [source/blender/io/alembic/CMakeFiles/bf_alembic.dir/intern/abc_reader_archive.cc.o]
> Error 1
>
> :info:build make[2]: ***
> [source/blender/io/alembic/CMakeFiles/bf_alembic.dir/intern/abc_reader_camera.cc.o]
> Error 1
>
> :info:build make[2]: ***
> [source/blender/io/alembic/CMakeFiles/bf_alembic.dir/intern/abc_reader_curves.cc.o]
> Error 1
>
> :info:build make[2]: ***
> [source/blender/io/alembic/CMakeFiles/bf_alembic.dir/intern/abc_reader_mesh.cc.o]
> Error 1
>
> :info:build make[2]: ***
> [source/blender/io/alembic/CMakeFiles/bf_alembic.dir/intern/abc_reader_nurbs.cc.o]
> Error 1
>
> :info:build make[1]: ***
> [source/blender/io/alembic/CMakeFiles/bf_alembic.dir/all] Error 2
>
> :info:build make[2]: ***
> [source/blender/imbuf/intern/openexr/CMakeFiles/bf_imbuf_openexr.dir/openexr_api.cpp.o]
> Error 1

New description:

 See attached log file, blender does not compile, errors out on intel
 platform. The log file doesn't give a lot of details, it shows errors on
 alembic and openxr:

 {{{
 :info:build make[2]: ***
 [source/blender/io/alembic/CMakeFiles/bf_alembic.dir/intern/abc_customdata.cc.o]
 Error 1
 :info:build make[2]: ***
 [source/blender/io/alembic/CMakeFiles/bf_alembic.dir/intern/abc_reader_archive.cc.o]
 Error 1
 :info:build make[2]: ***
 [source/blender/io/alembic/CMakeFiles/bf_alembic.dir/intern/abc_reader_camera.cc.o]
 Error 1
 :info:build make[2]: ***
 [source/blender/io/alembic/CMakeFiles/bf_alembic.dir/intern/abc_reader_curves.cc.o]
 Error 1
 :info:build make[2]: ***
 [source/blender/io/alembic/CMakeFiles/bf_alembic.dir/intern/abc_reader_mesh.cc.o]
 Error 1
 :info:build make[2]: ***
 [source/blender/io/alembic/CMakeFiles/bf_alembic.dir/intern/abc_reader_nurbs.cc.o]
 Error 1
 :info:build make[1]: ***
 [source/blender/io/alembic/CMakeFiles/bf_alembic.dir/all] Error 2
 :info:build make[2]: ***
 [source/blender/imbuf/intern/openexr/CMakeFiles/bf_imbuf_openexr.dir/openexr_api.cpp.o]
 Error 1
 }}}

--

Comment (by ryandesign):

 The first error in the log is:

 {{{
 :info:build /opt/local/include/Alembic/Util/Foundation.h:66:10: fatal
 error: 'half.h' file not found
 :info:build #include <half.h>
 :info:build          ^~~~~~~~
 }}}

 half.h is part of openexr 2. The openexr port was recently updated to
 openexr 3 which is probably what broke this (and some other ports). If
 blender can be updated or fixed to work with openexr 3, great; if not, a
 new openexr2 port was created and blender could be changed to use that
 instead.

-- 
Ticket URL: <https://trac.macports.org/ticket/67500#comment:3>
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