git clone https://github.com/ShaolinDeng/openwrt.git
cd source
echo "src-git cups https://github.com/ShaolinDeng/lede-cups.git" >> feeds.conf.default
./scripts/feeds update -a
./scripts/feeds install -a
make menuconfig (set Network->Printing->cups as "*")
make