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<chapter id="installation">

<title><![%standalone-include[<productname>PostgreSQL</>]]>

<listitem>

<para>

If you want to build the <application>PL/Tcl</application>

procedural language, you of course need a Tcl installation.

procedural language, you of course need a <productname>Tcl</>

installation. If you are using a pre-8.4 release of

<productname>Tcl</>, ensure that it was built without multithreading

support.

</para>

</listitem>