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@xxxxxxxxxxxx/ Thanks!