DKMS is not installing the right kernel-devel package

[Thorsten Leemhuis]

Dan Book wrote on 09.06.2015 22:01:
> This has also been a problem for several releases with the akmods from
> rpmfusion.

There was always a problem; there where just less people running into
it, because yum/dnf installed "kernel-devel" most of the time, which
matched the kernel that was running on most systems; but quite a few
x86-32 users ran into problems afaics, as kernel-PAE get's installed
there sometimes and hence they needed kernel-PAE-devel.

Mosts of the docs and howtos on the net don't mention that, which leads
to confused and frustrating users; those in the end might be one of
multiple problems why they switch to another distribution.

> I think the more "correct" solution (read to the end) would
> be to somehow prioritize the kernel-devel package (possibly multiple)
> that matches the installed kernel(s).

That's not a solution, that's solving the problem for some users and
ignoring others (those that use kernel-PAE for example).

> [...]

CU
thl

> On Tue, Jun 9, 2015 at 3:41 PM, Thorsten Leemhuis <fedora at leemhuis.info
> <mailto:fedora at leemhuis.info>> wrote:
> 
>     On 09.06.2015 21:04, Neal Gompa wrote:
>     > I've noticed that when dkms is installed, it's not grabbing the right
>     > kernel-devel package as a dependency.
> 
>     Because that's not possible with ordinary dependencies (might be
>     possible with soft dependencies [Suggests, Enhances etc]) unless we
>     change something in the kernel packaging (see below).
> 
>     > Instead, it grabs
>     > kernel-debug-devel. This occurs on Fedora 21 and 22, and I'm not sure
>     > why.
> 
>     Because all kernel*devel package provide kernel-devel iirc.
> 
>     > Anyone have any idea why this is happening and a way to work around it?
> 
>     Create something like a meta-package "kernel-devel-all" that depends on
>     all available kernel-devel packages (kernel-devel, kernel-PAE-devel,
>     kernel-debug-devel, ...) for the arch in question; then add "Requires:
>     kernel-devel-all" to the akmods and dkms packages. That's messy and
>     creates overhead for users, but that's afaics the only way it will work
>     for everyone; otherwise you'll always run into situations where a
>     kernel-devel package for one kernel variant gets installed while you are
>     running different variant. Example: You get kernel-devel via some
>     dependency in akmods or dkms; but you are running kernel-PAE on your
>     i686 machine, so building modules with akmods or dkms will fail, as
>     that's requires kernel-PAE-devel.
> 
>     HTH; CU, knurd
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