On 11/2/20 10:54 PM, Hangbin Liu wrote: > On Mon, Nov 02, 2020 at 08:37:37AM -0700, David Ahern wrote: >> On 10/29/20 9:11 AM, Hangbin Liu wrote: >>> This patch adds a check to see if we support libbpf. By default the >>> system libbpf will be used, but static linking against a custom libbpf >>> version can be achieved by passing LIBBPF_DIR to configure. FORCE_LIBBPF >>> can be set to force configure to abort if no suitable libbpf is found, >>> which is useful for automatic packaging that wants to enforce the >>> dependency. >>> >> >> Add an option to force libbpf off and use of the legacy code. i.e, yes >> it is installed, but don't use it. >> >> configure script really needs a usage to dump options like disabling libbpf. >> > > Shouldn't we use libbpf by default if system support? The same like libmnl. > There is no options to force libnml off. > configure scripts usually allow you to control options directly, overriding the autoprobe.