For the sake of completeness, obtain a copy of the latest pgpool source code. At the time of writing this book, the latest version is 3.5.4, released on Augest 31, 2016.
In order to properly compile the source code, we need PostgreSQL development libraries in addition to the normally installed system binaries. For example, to build properly on a Debian- or Ubuntu-based system, we need to install libraries by executing this at the command line:
sudo apt-get install postgresql-server-dev-9.6
Later, we simply need a root-capable user to install PgBouncer as a system-wide service.
