netdev - Re: [PATCH bpf 1/2] selftests: bpf: fix compilation with out-of-tree $(OUTPUT)

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Date:   Wed, 6 Mar 2019 17:02:44 -0800
From:   Y Song <ys114321@...il.com>
To:     Stanislav Fomichev <sdf@...gle.com>
Cc:     netdev <netdev@...r.kernel.org>, bpf@...r.kernel.org,
        David Miller <davem@...emloft.net>,
        Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>
Subject: Re: [PATCH bpf 1/2] selftests: bpf: fix compilation with out-of-tree $(OUTPUT)

On Wed, Mar 6, 2019 at 1:14 PM Stanislav Fomichev <sdf@...gle.com> wrote:
>
> A bunch of related changes lumped together:
> * Create prog_tests and verifier output directories; these don't exist with
>   out-of-tree $(OUTPUT)
> * Add missing -I (via separate TEST_{PROGS,VERIFIER}_CFLAGS) for the main tree
>   ($(PWD) != $(OUTPUT) for out-of-tree)
> * Add libbpf.a dependency for test_progs_32 (parallel make fails otherwise)
> * Add missing "; \" after "cd" when generating test.h headers
>
> Tested by:
> $ alias m="make -s -j$(nproc)"
> $ m -C tools/testing/selftests/bpf/ clean
> $ m -C tools/lib/bpf/ clean
> $ rm -rf xxx; mkdir xxx; m -C tools/testing/selftests/bpf/ OUTPUT=$PWD/xxx
> $ m -C tools/testing/selftests/bpf/
>
> Fixes: 3f30658830f3 ("selftests: bpf: break up test_progs - preparations")
> Fixes: 2dfb40121ee8 ("selftests: bpf: prepare for break up of verifier tests")
> Fixes: 3ef84346c561 ("selftests: bpf: makefile support sub-register code-gen test mode")
>
> Signed-off-by: Stanislav Fomichev <sdf@...gle.com>
Acked-by: Yonghong Song <yhs@...com>