On Fri, Oct 9, 2020 at 9:06 AM Yaniv Agman <yanivagman@xxxxxxxxx> wrote: > > Pulling the latest changes of libbpf and compiling my application with it, > I see the following error: > > ../libbpf/src//root/usr/include/bpf/bpf_helpers.h:99:10: error: > unknown register name 'r0' in asm > : "r0", "r1", "r2", "r3", "r4", "r5"); are you including bpf_helpers.h from user-space code? You are using recent enough Clang to not run into this problem for -target bpf, so this seems like you are including bpf_helpers.h in the context where it's not supposed to be included. > > The commit which introduced this change is: > 80c7838600d39891f274e2f7508b95a75e4227c1 > > I'm not sure if I'm doing something wrong (missing include?), or this > is a genuine error > > Yaniv