Re: [gentoo-dev] News item: manual steps required to transition from eselect-opencl to direct icd-loader use

[Brian Evans]

On 4/11/20 9:37 AM, Marek Szuba wrote:
> Does this look okay to you, guys? The date is preliminary and dependent
> on how quickly we can get nvidia-drivers migrated to the new approach,
> hopefully we can get this to happen sooner.
>
> * * *
>
> Title: Manual steps required during upgrade to an eselect-free OpenCL set-up
> Author: Marek Szuba <marecki@g.o>
> Posted: 2020-05-01
> Revision: 1
> News-Item-Format: 2.0
> Display-If-Installed: app-eselect/eselect-opencl
>
> We are now in the process of migrating OpenCL in Gentoo to having all
> implementations operate through an ICD loader (dev-libs/ocl-icd or
> dev-libs/opencl-icd-loader) installed directly into /usr instead of
> using eselect-opencl to switch between implementations. eselect-free
> versions
> of loader packages have just been released to the public.
>
> Unfortunately although the upgrade to those versions will automatically
> uninstall app-eselect/eselect-opencl, it will not remove the symbolic
> links to
> libOpenCL.so created by this tool in library directories because those links
> are not owned by the package in question. If your system is configured for
> full collision protection (FEATURES=collision-protect), it will be necessary
> to manually remove those links
>
>     rm -i /usr/lib{,64}/libOpenCL.so*
>
> before running the upgrade.
>
> Systems whose collision protection either allows overwriting orphaned files
> (FEATURES='-collision-protect protect-owned') or which do not use collision
> protection at all (not recommended) should be unaffected.
>
>
>

I would mention that FEATURES='-collision-protect protect-owned' is the
default so most people won't have any action to take at all.

Brian