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<appendix id="cvs">

<appendixinfo>

<para>

<productname>CVS</productname> has deficiencies. For example,

generating diffs that add or remove files requires write access to the

CVS repository. To work aroundsuch difficiencies, use

CVS repository. To work aroundthat deficiency, use

<productname>cvsutils</productname>, which is packaged in several

operating systems, and is available in source form at <ulink

url="http://www.red-bean.com/cvsutils/"></ulink>.

</para>

<para>

Note that building <productname>PostgreSQL</productname> from a CVS

pull requires reasonably up-to-date versions of <application>bison</>

and <application>flex</>, which are not needed to build from a distribution

tarball because the files made with them are pre-built in a tarball.

Otherwise the tool requirements are the same as building from source.

</para>

</sect1>

<sect1 id="cvs-tree">