netdev - Re: [PATCH] selftests net: fix bpf build error

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Message-ID: <20220601070844.10515-1-lina.wang@mediatek.com>
Date:   Wed, 1 Jun 2022 15:08:44 +0800
From:   Lina Wang <lina.wang@...iatek.com>
To:     "David S . Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>, Shuah Khan <shuah@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>
CC:     Alexei Starovoitov <ast@...nel.org>,
        Andrii Nakryiko <andrii@...nel.org>,
        Maciej enczykowski <maze@...gle.com>, <netdev@...r.kernel.org>,
        <linux-kselftest@...r.kernel.org>, <bpf@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <lkp@...el.com>,
        <rong.a.chen@...el.com>, kernel test robot <oliver.sang@...el.com>
Subject: Re: [PATCH] selftests net: fix bpf build error

On Wed, 2022-06-01 at 01:01 +0200, Daniel Borkmann wrote:
> On 5/30/22 8:21 AM, Lina Wang wrote:
> clang -O2 -target bpf -c bpf/nat6to4.c -I../../bpf -I../../../../lib
> -I../../../../../usr/include/ -o
> /root/daniel/bpf/tools/testing/selftests/net/bpf/nat6to4.o
> In file included from bpf/nat6to4.c:27:
> In file included from /usr/include/linux/bpf.h:11:
> /usr/include/linux/types.h:5:10: fatal error: 'asm/types.h' file not
> found
> #include <asm/types.h>
>           ^~~~~~~~~~~~~
> 1 error generated.

maybe your pc is ubuntu or Debian, you should apt-get install gcc-multilib, 
guys on the internet meets the same problem when build libbpf related, just
install gcc-multilib package

> Could we reuse the build infra from tools/testing/selftests/bpf/ for nat6to4.c?

We discussed it before, please refer to https://patchwork.kernel.org/project/netdevbpf/patch/20220407084727.10241-1-lina.wang@mediatek.com/

Thanks!