On Wed, Oct 28, 2020 at 08:20:55PM -0600, David Ahern wrote: > >> root@u2010-sfo3:~/iproute2.git# make -j 4 > >> ... > >> /usr/bin/ld: ../lib/libutil.a(bpf_libbpf.o): in function `load_bpf_object': > >> bpf_libbpf.c:(.text+0x3cb): undefined reference to > >> `bpf_program__section_name' > >> /usr/bin/ld: bpf_libbpf.c:(.text+0x438): undefined reference to > >> `bpf_program__section_name' > >> /usr/bin/ld: bpf_libbpf.c:(.text+0x716): undefined reference to > >> `bpf_program__section_name' > >> collect2: error: ld returned 1 exit status > >> make[1]: *** [Makefile:27: ip] Error 1 > >> make[1]: *** Waiting for unfinished jobs.... > >> make: *** [Makefile:64: all] Error 2 > > > > You need to update libbpf to latest version. > > nope. you need to be able to handle this. Ubuntu 20.10 was just > released, and it has a version of libbpf. If you are going to integrate > libbpf into other packages like iproute2, it needs to just work with > that version. OK, I can replace bpf_program__section_name by bpf_program__title(). > > > > > But this also remind me that I need to add bpf_program__section_name() to > > configure checking. I will see if I missed other functions' checking. > > This is going to be an on-going problem. iproute2 should work with > whatever version of libbpf is installed on that system. I will make it works on Ubuntu 20.10, but with whatever version of libbpf? That looks hard, especially with old libbpf. Thanks Hangbin
