[PATCH] net/af_xdp: limit libbpf version to <= v0.7.0

[Loftus, Ciara]

> 
> 24/06/2022 08:06, Ciara Loftus:
> > Linking with libbpf v0.8.0 causes deprication warnings. As a temporary
> > measure, prevent linking with libbpf versions v0.8.0 and greater. This
> > limitation should be removed in the future when appropriate
> > compatibility measures are introduced.
> >
> > Signed-off-by: Ciara Loftus <ciara.loftus at intel.com>
> > ---
> > -bpf_dep = dependency('libbpf', required: false, method: 'pkg-config')
> > -if not bpf_dep.found()
> > -    bpf_dep = cc.find_library('bpf', required: false)
> > -endif
> > +bpf_dep = dependency('libbpf', version : '<=0.7.0', required: false,
> method: 'pkg-config')
> 
> It is also removing the find_library() method.
> Any reason it was there?
> 

My understanding is that one can't check the library version using that method.
So it was a valid method of picking up the library until now where we always need to check the version before linking.