Compile Tor source, to build a relay ?

Hey,
Totally noob on Alpine, and I want to have fun with it on a Raspberry Pi 2 ! (thx for your support on this hardware!)

So I'm trying to compile Tor source, to have a package to "add".
But no package is built when I try !
I'm sure I've forget some needed packages :s

Here is the way I'm using to compile this source (fresh install) :
(be careful, there's a format error with the wget line... forum auto-link)
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apk update && apk upgrade

apk add ca-certificates openssl openssl-dev libevent libevent-dev gcc g++ make automake zlib

wget https://www.torproject.org/dist/tor-0.2.8.9.tar.gz

tar xzvf tor-0.2.8.9.tar.gz
cd tor-0.2.8.9

./configure && make
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100% I'm sure there is something missing to have this build successful !
(or if there's another way to achieve it...)
Many thx for your lights !!! :)