openstreetmap/openstreetmap-website — pull request #839 by Zverik (2014-11-18 08:00:35+00:00)
Title: add a note for when functions cannot be installed

Creating functions did not work in my case (whether .so file was in my home directory or in `/var/lib/pgsql`), so I had to google the solution. I hope this would save a minute for somebody.