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From: "Jason A. Donenfeld" <Jason@zx2c4.com>
Date: Wed, 16 Nov 2016 18:39:45 +0100
Message-ID: <CAHmME9ordFZD8ESpTr9BEsedocoFDWjBwkWf43ke4X-m-bvibQ@mail.gmail.com>
To: Kalin KOZHUHAROV <me.kalin@gmail.com>
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Cc: WireGuard mailing list <wireguard@lists.zx2c4.com>
Subject: Re: [WireGuard] RFE: A notion of VERSION (was: Debugging AllowedIps)
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The best I could come with:

> WIREGUARD_VERSION := $(shell parent_name=$$(readlink -f .. | sed -n 's:.*/[wW]ire[Gg]uard[a-z-]*-\([0-9.]\+\)$$:\1:p');  if [ -d ../.git ]; then echo "git-$$(git rev-parse --shor
t HEAD)"; elif [ -n $parent_name ]; then echo "$$parent_name"; else
echo "unknown"; fi)

Is this reliable, or is this garbage?