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From: Song Liu <songliubraving@fb.com>
To: Shuah Khan <skhan@linuxfoundation.org>
Cc: Song Liu <liu.song.a23@gmail.com>,
	Alexei Starovoitov <ast@kernel.org>,
	Daniel Borkmann <daniel@iogearbox.net>, Martin Lau <kafai@fb.com>,
	"Yonghong Song" <yhs@fb.com>, Networking <netdev@vger.kernel.org>,
	bpf <bpf@vger.kernel.org>,
	open list <linux-kernel@vger.kernel.org>,
Subject: Re: [PATCH] tools: bpf: Use !building_out_of_srctree to determine srctree
Date: Fri, 27 Sep 2019 21:15:24 +0000
Message-ID: <57756C81-5B82-4E56-9CF0-5C1C4A4FBEFC@fb.com> (raw)
In-Reply-To: <5ec40572-5df9-0e5b-5a85-eb53be48b87d@linuxfoundation.org>

> On Sep 27, 2019, at 12:03 PM, Shuah Khan <skhan@linuxfoundation.org> wrote:
> On 9/27/19 12:44 PM, Song Liu wrote:
>> On Thu, Sep 26, 2019 at 6:14 PM Shuah Khan <skhan@linuxfoundation.org> wrote:
>>> make TARGETS=bpf kselftest fails with:
>>> Makefile:127: tools/build/Makefile.include: No such file or directory
>>> When the bpf tool make is invoked from tools Makefile, srctree is
>>> cleared and the current logic check for srctree equals to empty
>>> string to determine srctree location from CURDIR.
>>> When the build in invoked from selftests/bpf Makefile, the srctree
>>> is set to "." and the same logic used for srctree equals to empty is
>>> needed to determine srctree.
>>> Check building_out_of_srctree undefined as the condition for both
>>> cases to fix "make TARGETS=bpf kselftest" build failure.
>>> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
>> The fix looks reasonable. Thanks!
>> However, I am still seeing some failure:
>> make TARGETS=bpf kselftest
>> [...]
>> test_verifier.c
>> /data/users/songliubraving/kernel/linux-git/tools/testing/selftests/bpf/test_stub.o
>> /data/users/songliubraving/kernel/linux-git/tools/testing/selftests/bpf/libbpf.a
>> -lcap -lelf -lrt -lpthread -o
>> /data/users/songliubraving/kernel/linux-git/tools/testing/selftests/bpf/test_verifier
>> make[3]: test_verifier.c: Command not found
>> Is this just a problem with my setup?
> You are running into the second bpf failure because of the dependency
> on the latest llvm. This is known issue with bpf test and it doesn't
> compile on 5.4 and maybe even 5.3

Thanks for the clarification. 

Acked-by: Song Liu <songliubraving@fb.com>

  reply index

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-09-27  1:13 Shuah Khan
2019-09-27 18:44 ` Song Liu
2019-09-27 19:03   ` Shuah Khan
2019-09-27 21:15     ` Song Liu [this message]
2019-09-30  8:58 ` Daniel Borkmann
2019-09-30 14:16   ` Shuah Khan
2019-09-30 18:23     ` Daniel Borkmann

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