On 10/28/20 8:27 PM, Andrii Nakryiko wrote:
On Wed, Oct 28, 2020 at 7:06 PM Hangbin Liu [off-list ref] wrote:
quoted
On Wed, Oct 28, 2020 at 05:02:34PM -0600, David Ahern wrote:
quoted
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.
Why not using libbpf from submodule?
no. iproute2 does not bring in libmnl, libc, ... a submodules. libbpf is
not special. OS versions provide it and it needs to co-exist with packages.