1#!/usr/bin/env bash
2# SPDX-License-Identifier: LGPL-2.1-or-later
3set -eu
4set -o pipefail
5
6${1:?} -dM -include linux/if_arp.h -include "${2:?}" - </dev/null | \
7       awk '/^#define[ \t]+ARPHRD_[^ \t]+[ \t]+[^ \t]/ { print $2; }' | \
8       sed -e 's/ARPHRD_//'
9