On Wed, Oct 28, 2020 at 05:02:34PM -0600, David Ahern wrote: > fails to compile on Ubuntu 20.10: > > root@u2010-sfo3:~/iproute2.git# ./configure > TC schedulers > ATM yes > IPT using xtables > IPSET yes > > iptables modules directory: /usr/lib/x86_64-linux-gnu/xtables > libc has setns: yes > SELinux support: yes > libbpf support: yes > ELF support: yes > libmnl support: yes > Berkeley DB: no > need for strlcpy: yes > libcap support: yes > > root@u2010-sfo3:~/iproute2.git# make clean > > 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. 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. Thanks Hangbin
