First of all, thank you all for your suggestions on this compilation issue. > It does break CI ([0]). We could use BPF CO-RE and ___suffix rule to > avoid this. But we can also say that selftests/bpf/config{,<arch>} has > to be used by bots that want to build BPF selftests. > > [0] https://github.com/kernel-patches/bpf/actions/runs/3446651033/jobs/5752592868 I try to use bpf_core_enum_value_exists() and bpf_core_enum_value(), However, as far as my knowledge is concerned, I have to redefine a NF_NAT_MANIP_SRC enumeration, but this would conflict with the situation where there is no secondary compilation problem. How do I fix this with CO-RE, it seems that there is no similar CO-RE+ __suffix solution for enumerations in selftests. Can you give me some tips or help me?