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SubjectRe: linux-next: build failure after merge of the bpf-next tree
Hi Björn,

[Cc'ing a few (maybe) interested parties]

On Thu, 11 Mar 2021 07:47:03 +0100 Björn Töpel <bjorn.topel@intel.com> wrote:
>
> On 2021-03-11 01:47, Stephen Rothwell wrote:
> >
> > After merging the bpf-next tree, today's linux-next build (perf) failed
> > like this:
> >
> > make[3]: *** No rule to make target 'libbpf_util.h', needed by '/home/sfr/next/perf/staticobjs/xsk.o'. Stop.
>
> It's an incremental build issue, as pointed out here [1], that is
> resolved by cleaning the build.

Does this mean there is a deficiency in the dependencies in our build system?

> [1] https://lore.kernel.org/bpf/CAEf4BzYPDF87At4=_gsndxof84OiqyJxgAHL7_jvpuntovUQ8w@mail.gmail.com/
>
> > Caused by commit
> >
> > 7e8bbe24cb8b ("libbpf: xsk: Move barriers from libbpf_util.h to xsk.h")
> >
> > I have used the bpf tree from next-20210310 for today.

I have set my system to remove the object directory before building
after merging the bpf-next tree for now.

--
Cheers,
Stephen Rothwell
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