Andrii Nakryiko <andrii.nakryiko@xxxxxxxxx> writes: > On Wed, Nov 27, 2019 at 1:49 AM Jiri Olsa <jolsa@xxxxxxxxxx> wrote: >> >> hi, >> adding support to link bpftool with libbpf dynamically, >> and config change for perf. >> >> It's now possible to use: >> $ make -C tools/bpf/bpftool/ LIBBPF_DYNAMIC=1 > > I wonder what's the motivation behind these changes, though? Why is > linking bpftool dynamically with libbpf is necessary and important? > They are both developed tightly within kernel repo, so I fail to see > what are the huge advantages one can get from linking them > dynamically. Well, all the regular reasons for using dynamic linking (memory usage, binary size, etc). But in particular, the ability to update the libbpf package if there's a serious bug, and have that be picked up by all utilities making use of it. No reason why bpftool should be special in that respect. -Toke
