protobuf3

wget https://github.com/protocolbuffers/protobuf/releases/download/v3.11.2/protobuf-all-3.11.2.tar.gz
tar zxf protobuf-all-3.11.2.tar.gz
cd protobuf-3.11.2
./configure -prefix=/usr/local/
sudo make -j4 && sudo make install
protoc --version