Hi,
See the file INSTALL for instructions on how to build and install
PostgreSQL. That file also lists supported operating systems and
hardware platforms and contains information regarding any other
software packages that are required to build or run the PostgreSQL
system.
Unfortunately this file doesn't exist in the sources. Commit 0bcc2beb4a8e27c407da7d247083937261b60071 removed it, and the message says it gets built as part of the "tarball scripts" now.
Given that people who have the git source are more likely to try to get started building the source code, it may be helpful to provide more useful information in the README, or a backup location to look?
Thanks for your help,
Kevin