(This file does not appear in release tarballs.) In a release or snapshot tarball of Postgres-XC, documentation files named INSTALL and HISTORY will appear in this directory. However, these files are not stored in git and so will not be present if you are using a git checkout. If you are using git, you can view the most recent install instructions at: http://developer.postgresql.org/docs/postgres/installation.html and the current release notes at: http://developer.postgresql.org/docs/postgres/release.html Users compiling from git will also need compatible versions of Bison, Flex, and Perl, as discussed in the install documentation. These programs are not needed when using a tarball, since the files they are needed to build are already present in the tarball. (On Windows, however, you need Perl anyway.)