Bug 820509 – media-libs/openimageio-2.2.18.0-r1: Emerging issues caused by Imath

• Status: RESOLVED DUPLICATE of bug 816264
• Product: Gentoo Linux

[Description perigordtruffle7318 2021-10-27 12:31:56 UTC]

Created attachment 746973 [details]
Emerge --info openimageio

First thing I noticed is the lack of Imath in any of the ebuilds


$ cat /var/db/repos/gentoo/media-libs/openimageio/* | grep -i "imath" 
✘ $

[Comment 1 perigordtruffle7318 2021-10-27 12:34:08 UTC]

oh wait accidentally pressed enter too early,

[Comment 2 perigordtruffle7318 2021-10-27 12:38:41 UTC]

Created attachment 746976 [details]
Build.log pre imath emerge

[Comment 3 perigordtruffle7318 2021-10-27 12:40:43 UTC]

Created attachment 746979 [details]
emerge --info '=media-libs/openimageio-2.2.18.0-r1::gentoo'

[Comment 4 perigordtruffle7318 2021-10-27 12:45:06 UTC]

Comment on attachment 746976 [details]
Build.log pre imath emerge

Of course this causes the cmake generation to fail

[Comment 5 perigordtruffle7318 2021-10-27 12:49:46 UTC]

Created attachment 746982 [details]
emerge after emerging Imath

Emerging with Imath installed does cause some namespace collisions which is easily fixed by some word replacements, i've even tried making a local clone and most of the namespace issues got fixed only leaving behind these errors:

In file included from /usr/include/Imath/ImathColor.h:17,
                 from /var/tmp/portage/media-libs/openimageio-2.2.18.0-r1/work/openimageio-2.2.18.0_build/include/OpenImageIO/Imath.h:16,
                 from /var/tmp/portage/media-libs/openimageio-2.2.18.0-r1/work/oiio-Release-2.2.18.0/src/include/OpenImageIO/fmath.h:40,
                 from /var/tmp/portage/media-libs/openimageio-2.2.18.0-r1/work/oiio-Release-2.2.18.0/src/openexr.imageio/exroutput.cpp:75:

/usr/include/Imath/half.h:569:5: error: ‘IMATH_CONSTEXPR14’ does not name a type; did you mean ‘OIIO_CONSTEXPR14’?
  569 |     IMATH_CONSTEXPR14 half round (unsigned int n) const IMATH_NOEXCEPT;
      |     ^~~~~~~~~~~~~~~~~
      |     OIIO_CONSTEXPR14

[Comment 6 perigordtruffle7318 2021-10-27 12:51:46 UTC]

Created attachment 746985 [details]
emerge --info '=dev-libs/imath-3.1.3::gentoo'

[Comment 7 Tee KOBAYASHI 2021-10-28 23:38:55 UTC]

The problem seems to be that cmake is going to use media-libs/openexr:3 when installed, whereas the ebuild(s) of openimageio specifies the dependency on media-libs/openexr:0.

A workaround would be to unmerge media-libs/openexr:3, if possible.

[Comment 8 Tee KOBAYASHI 2021-10-29 00:24:42 UTC]

See also: https://bugs.gentoo.org/820275

[Comment 9 Sam James 2021-10-29 09:22:01 UTC]

*** This bug has been marked as a duplicate of bug 816264 ***