Re: [RFT] Testing 1.22

On Sat, Jul 17, 2021 at 04:14:54PM +0100, Luca Boccassi wrote:

On Sat, 2021-07-17 at 17:10 +0200, Michal Suchánek wrote:

quoted

Hello,

...

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So this libbpf comes from the kernel, and there is a separate github
repository for libbpf.

Should the kernel ship its own copy of the library?

Seeing that the one in the kernel is 0.3.0 and the required one for
dwarves is 0.4.0 maybe the one in the kernel needs updating if it needs
to be shipped there?

I wil file a bug to build the libbpf from the git repo instead of the
kernel to make the openSUSE libbpf less baroque.

They provide the same ABI, so there should be only one in the same
distro, the kernel package shouldn't ship its own copy if there's a
standalone package built from the standalone sources.
If you are asking why the sources are still present in the upstream
kernel, I don't know - maybe historical reasons, since that's where it
came from? But AFAIK the majority of distros don't use that anymore.

FWIW the libbpf from github does not work for me with LTO (GCC 11).

Also there is a problem that LIBDIR is /usr/lib64 on arm64 ppc64(le) and
s390x but the library gets installed into /usr/lib by default. For some
reason x86_64 is the only 64bit arch that works out of the box.

Thanks

Michal