Bug 641244

Summary:	media-gfx/blender USE=cuda forces CUDA 8, incompatible with gcc 6.4.0
Product:	Gentoo Linux	Reporter:	Daniel M. Weeks <dan>
Component:	Current packages	Assignee:	Jonathan Scruggs (RETIRED) <dracwyrm>
Status:	RESOLVED FIXED
Severity:	normal	CC:	agrigo2001, graphics+disabled, jstein, proxy-maint
Priority:	Normal
Version:	unspecified
Hardware:	All
OS:	Linux
See Also:	https://bugs.gentoo.org/show_bug.cgi?id=639384 https://github.com/gentoo/gentoo/pull/6620
Whiteboard:
Package list:		Runtime testing required:	---
Bug Depends on:
Bug Blocks:	582084

Description Daniel M. Weeks 2017-12-16 05:11:33 UTC

Per the ebuild commit message: "Upstream only supports CUDA 8 with this release" 

However, anything older than CUDA 9 does not support gcc > 5 and fails with the following error:

#error -- unsupported GNU version! gcc versions later than 5 are not supported!

Since gcc 6.4.0 is now the default in Gentoo, it is no longer possible to build with USE=cuda.

Reproducible: Always

Comment 1 Jonas Stein gentoo-dev

2017-12-16 15:43:43 UTC

I am not sure, if this is finally a duplicate of #639384, or should be taken as new ticket.

Comment 2 Daniel M. Weeks 2017-12-20 13:32:47 UTC

(In reply to Jonas Stein from comment #1)
> I am not sure, if this is finally a duplicate of #639384, or should be taken
> as new ticket.

It is the same problem. Although, this does affect people still on 13.0 as well.

Comment 3 Jonathan Scruggs (RETIRED) gentoo-dev

2017-12-23 12:01:53 UTC

Would you be able to edit the ebuild to remove the hard depend on CUDA 8 to try CUDA 9? If this works, then I can change the ebuild. I think Blender 2.79 fixes this issue. BTW, this is one reason I really don't like CUDA.

Comment 4 Daniel M. Weeks 2017-12-24 01:17:57 UTC

(In reply to Jonathan Scruggs from comment #3)
> Would you be able to edit the ebuild to remove the hard depend on CUDA 8 to
> try CUDA 9? If this works, then I can change the ebuild. I think Blender
> 2.79 fixes this issue. BTW, this is one reason I really don't like CUDA.

It builds with CUDA 9.1 (from the junkdrawer overlay) and completed the "BMW benchmark" on the GPU.

Comment 5 Larry the Git Cow gentoo-dev

2017-12-25 16:09:42 UTC

The bug has been closed via the following commit(s):

https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=d874e5a73532b74bdeed992a7c0f75b4d12bd561

commit d874e5a73532b74bdeed992a7c0f75b4d12bd561
Author:     Jonathan Scruggs <j.scruggs@gmail.com>
AuthorDate: 2017-12-24 17:24:26 +0000
Commit:     David Seifert <soap@gentoo.org>
CommitDate: 2017-12-25 16:09:12 +0000

    media-gfx/blender: Version bump to 2.79
    
    Version bump to 2.79
    Closes: https://bugs.gentoo.org/630820
    
    Allow CUDA v9 to be used for GCC 6.4 compatibility.
    Closes: https://bugs.gentoo.org/641244
    
    Call cmake-utils_src_prepare explicity.
    Closes: https://bugs.gentoo.org/640194
    
    Depend on virtual/jack.
    Closes: https://bugs.gentoo.org/612022
    
    Allow DRI to be writable to avoid sandbox violations.
    Closes: https://bugs.gentoo.org/600916
    Closes: https://github.com/gentoo/gentoo/pull/6620

 media-gfx/blender/Manifest            |   1 +
 media-gfx/blender/blender-2.79.ebuild | 287 ++++++++++++++++++++++++++++++++++
 media-gfx/blender/metadata.xml        |   6 +
 3 files changed, 294 insertions(+)