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<!-- doc/src/sgml/sourcerepo.sgml -->

<appendix id="sourcerepo">
 <title>The Source Code Repository</title>

 <para>
  The <productname>PostgreSQL</productname> source code is stored and managed using the
  <productname>Git</productname> version control system. An public mirror of this
  is available and updated within a minute of the master repository.
 </para>

 <para>
  Our wiki, <ulink
  url="http://wiki.postgresql.org/wiki/Working_with_Git"></ulink>,
  has additional details on working with Git.
 </para>

  <para>
   Note that building <productname>PostgreSQL</productname> from the source
   repository requires reasonably up-to-date versions of <application>bison</>
   and <application>flex</>. These tools are not needed to build from a
   distribution tarball since their output is included in the file.
   You will need Perl as well, but otherwise the tool requirements are the
   same.
  </para>

 <sect1 id="git">
  <title>Getting The Source Via <productname>Git</></title>

  <para>
   With <productname>Git</> you will make a copy of the entire code repository
   to your local machine, so you will have access to all history and branches
   offline. This is the fastest and most flexible way to develop or test
   patches.
  </para>

  <procedure>
   <title>Git</title>

   <step>
    <para>
     You will need an installed version of <productname>Git</>, which you can get
     from <ulink url="http://git-scm.com"></ulink>. Many systems also have a recent
     version of <application>Git</> installed by default, or available in their
     package repository system.
    </para>
   </step>

   <step>
    <para>
     To being using the Git repository, make a clone of the official mirror:

<programlisting>
git clone git://git.postgresql.org/git/postgresql.git
</programlisting>

     This will copy the full repository to your local machine, so it may take
     a while to complete, especially if you have a slow Internet connection.
    </para>

    <para>
     The Git mirror can also be reached via the HTTP protocol in case for example
     a firewall is blocking access to the Git protocol. Just replace the URL
     like:

<programlisting>
git clone http://git.postgresql.org/git/postgresql.git
</programlisting>

     The HTTP protocol is less efficient than the Git protocol, so it will be
     slower to use.
    </para>
   </step>

   <step>
    <para>
     Whenever you want to get the latest updates in the system, <command>cd</>
     into the repository, and run:

<programlisting>
git fetch
</programlisting>
    </para>
   </step>
  </procedure>
  <para>
   <productname>Git</> can do a lot more things than just fetch the source. For
   more information, consult the man pages for the product, or the website at
   <ulink url="http://git-scm.com"></>.
  </para>
 </sect1>

</appendix>