Build
water@waters-MacBook-Pro:~/Downloads/protobuf-3.5.1$ ./autogen.sh
water@waters-MacBook-Pro:~/Downloads/protobuf-3.5.1$ ./configure
water@waters-MacBook-Pro:~/Downloads/protobuf-3.5.1$ make
water@waters-MacBook-Pro:~/Downloads/protobuf-3.5.1$ make install
water@waters-MacBook-Pro:~/Downloads/protobuf-3.5.1$ protoc --version
libprotoc 3.5.1