netdev - Re: [PATCH bpf-next v2] bpftool: make libbfd optional

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Message-ID: <CAADnVQLoJuBsjp3CRD9TNFT0yFdiP9p=D1Mo3Yq5q48jJdEfvA@mail.gmail.com>
Date:   Fri, 16 Nov 2018 20:47:45 -0800
From:   Alexei Starovoitov <alexei.starovoitov@...il.com>
To:     Stanislav Fomichev <sdf@...gle.com>
Cc:     Network Development <netdev@...r.kernel.org>,
        Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        Jakub Kicinski <jakub.kicinski@...ronome.com>,
        Quentin Monnet <quentin.monnet@...ronome.com>
Subject: Re: [PATCH bpf-next v2] bpftool: make libbfd optional

On Mon, Nov 12, 2018 at 1:44 PM Stanislav Fomichev <sdf@...gle.com> wrote:
>
> Make it possible to build bpftool without libbfd. libbfd and libopcodes are
> typically provided in dev/dbg packages (binutils-dev in debian) which we
> usually don't have installed on the fleet machines and we'd like a way to have
> bpftool version that works without installing any additional packages.
> This excludes support for disassembling jit-ted code and prints an error if
> the user tries to use these features.
>
> Tested by:
> cat > FEATURES_DUMP.bpftool <<EOF
> feature-libbfd=0
> feature-disassembler-four-args=1
> feature-reallocarray=0
> feature-libelf=1
> feature-libelf-mmap=1
> feature-bpf=1
> EOF
> FEATURES_DUMP=$PWD/FEATURES_DUMP.bpftool make
> ldd bpftool | grep libbfd
>
> Signed-off-by: Stanislav Fomichev <sdf@...gle.com>

applied, thanks