Bug 674838

Summary:	dev-util/nvidia-cuda-toolkit does not like GCC >= 7
Product:	Gentoo Linux	Reporter:	Andrew Udvare <audvare>
Component:	Current packages	Assignee:	Gentoo Science Related Packages <sci>
Status:	RESOLVED OBSOLETE
Severity:	normal	CC:	bugzilla, dan, redblade7, sam
Priority:	Normal
Version:	unspecified
Hardware:	All
OS:	Linux
See Also:	https://bugs.gentoo.org/show_bug.cgi?id=658568 https://bugs.gentoo.org/show_bug.cgi?id=674570
Whiteboard:
Package list:		Runtime testing required:	---

Description Andrew Udvare 2019-01-08 00:41:27 UTC

dev-util/nvidia-cuda-toolkit does not like GCC >= 7 but the OpenCV ebuild does not warn or help with this.

I propose that if the cuda USE flag is present, the ebuild should pull GCC < 7 and force the compiler to be that version. The user should not have to run eselect gcc or anything similar.

The downside is that one more copy of GCC is pulled in when it is only used for building opencv[cuda]. There does not appear to be any harm with switching back to latest GCC after opencv is built, or removing this old version.

Comment 1 David Seifert gentoo-dev

2020-12-27 16:17:31 UTC

CUDA 11 works just fine with GCC 8 and GCC 9