netdev - Re: [PATCH bpf-next] selftests/bpf: fix dependency ordering for attach

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Message-ID: <CAADnVQJwA-DbzncKJ_mjxvfk6PLu0HWuqkiOTWg0nVKyV6oRXQ@mail.gmail.com>
Date:   Sun, 6 Oct 2019 22:28:58 -0700
From:   Alexei Starovoitov <alexei.starovoitov@...il.com>
To:     Andrii Nakryiko <andriin@...com>
Cc:     bpf <bpf@...r.kernel.org>,
        Network Development <netdev@...r.kernel.org>,
        Alexei Starovoitov <ast@...com>,
        Daniel Borkmann <daniel@...earbox.net>,
        Andrii Nakryiko <andrii.nakryiko@...il.com>,
        Kernel Team <kernel-team@...com>
Subject: Re: [PATCH bpf-next] selftests/bpf: fix dependency ordering for
 attach_probe test

On Sun, Oct 6, 2019 at 8:31 PM Andrii Nakryiko <andriin@...com> wrote:
>
> Current Makefile dependency chain is not strict enough and allows
> test_attach_probe.o to be built before test_progs's
> prog_test/attach_probe.o is built, which leads to assembler compainig
> about missing included binary.
>
> This patch is a minimal fix to fix this issue by enforcing that
> test_attach_probe.o (BPF object file) is built before
> prog_tests/attach_probe.c is attempted to be compiled.
>
> Fixes: 928ca75e59d7 ("selftests/bpf: switch tests to new bpf_object__open_{file, mem}() APIs")
> Signed-off-by: Andrii Nakryiko <andriin@...com>

It doesn't help.
Before and after I still see:
$ cd selftests/bpf/
$ make
...
/tmp/cco8plDk.s: Assembler messages:
/tmp/cco8plDk.s:8: Error: file not found: test_attach_probe.o