netdev - Re: [PATCH bpf v3] tools/bpf: properly account for libbfd variations

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Date:   Tue, 15 Jan 2019 14:06:20 -0800
From:   Jakub Kicinski <jakub.kicinski@...ronome.com>
To:     Stanislav Fomichev <sdf@...gle.com>
Cc:     netdev@...r.kernel.org, davem@...emloft.net, ast@...nel.org,
        daniel@...earbox.net, quentin.monnet@...ronome.com
Subject: Re: [PATCH bpf v3] tools/bpf: properly account for libbfd
 variations

On Tue, 15 Jan 2019 14:03:27 -0800, Stanislav Fomichev wrote:
> On some platforms, in order to link against libbfd, we need to
> link against liberty and even possibly libz. Account for that
> in the bpftool Makefile. We now have proper feature detection
> for each case, so handle each one separately.
> 
> See recent commit 14541b1e7e72 ("perf build: Don't unconditionally link the
> libbfd feature test to -liberty and -lz") where I fixed feature
> detection.
> 
> v2 (addressed Jakub's nits):
>   * better syntax for 'else ifeq'
>   * no space between ifeq args
> v3:
>   * use LIBS, not EXTLIBS for -DHAVE_LIBBFD_SUPPORT
> 
> Fixes: 29a9c10e4110 ("bpftool: make libbfd optional")
> Signed-off-by: Stanislav Fomichev <sdf@...gle.com>

Acked-by: Jakub Kicinski <jakub.kicinski@...ronome.com>

Thanks!!