apt-get install -y libopus-dev opus-tools

wget https://github.com/seanbright/asterisk-opus/archive/asterisk-13.3.zip -O opus-asterisk13.zip &&
unzip opus-asterisk13.zip &&
rm -f opus-asterisk13.zip &&
cp asterisk-opus-asterisk*/codecs/* asterisk-13*/codecs/ &&
cp asterisk-opus-asterisk*/formats/* asterisk-13*/formats/ &&
cp asterisk-opus-asterisk*/asterisk.patch asterisk-13*/ &&
cd asterisk-13* &&
patch -p1 < ./asterisk.patch &&
./bootstrap.sh &&
cd /usr/src