[RFC] running bpftool build tests in CI

["Alexis Lothoré" <alexis.lothore@bootlin.com>]

Hi,
as part of the cleanup/automation effort in the BPF selfests directory,
I am now taking a look at test_bpftool_build.sh, which ensures that the
different supported ways of building bpftool work correctly. As this
script does not really exercize anything at runtime but rather at build
time, I'd like to propose to introduce a dedicated step in the CI
automation that already builds and run selftests. I have opened two PRs
in kernel-patches vmtest ([0]) and libbpf/ci ([1]), hoping I am not
confusing which code should go where between the different repositories
kept in sync with each other. I have also opened a dummy PR on
kernel-patches/bpf ([2], not to be merged) that shows how this test
would look like in CI.

This really is a RFC, as not all tests from test_bpftool_build.sh are
being executed: I suspect those based on .config to be currently broken,
but that can be handled as a second step, depending on the chosen
direction.

Any comment welcome !

Alexis

[0] https://github.com/kernel-patches/vmtest/pull/517
[1] https://github.com/libbpf/ci/pull/236
[2] https://github.com/kernel-patches/bpf/pull/13368

-- 
Alexis Lothoré, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com