<literal>installcheck</literal> target, useful e.g., if tests require special configuration, or don't use <application>pg_regress</application>
       </para>
      </listitem>
     </varlistentry>

     <varlistentry id="extend-pgxs-extra-clean">
      <term><varname>EXTRA_CLEAN</varname></term>
      <listitem>
       <para>
        extra files to remove in <literal>make clean</literal>
       </para>
      </listitem>
     </varlistentry>

     <varlistentry id="extend-pgxs-pg-cppflags">
      <term><varname>PG_CPPFLAGS</varname></term>
      <listitem>
       <para>
        will be prepended to <varname>CPPFLAGS</varname>
       </para>
      </listitem>
     </varlistentry>

     <varlistentry id="extend-pgxs-pg-cflags">
      <term><varname>PG_CFLAGS</varname></term>
      <listitem>
       <para>
        will be appended to <varname>CFLAGS</varname>
       </para>
      </listitem>
     </varlistentry>

     <varlistentry id="extend-pgxs-pg-cxxflags">
      <term><varname>PG_CXXFLAGS</varname></term>
      <listitem>
       <para>
        will be appended to <varname>CXXFLAGS</varname>
       </para>
      </listitem>
     </varlistentry>

     <varlistentry id="extend-pgxs-pg-ldflags">
      <term><varname>PG_LDFLAGS</varname></term>
      <listitem>
       <para>
        will be prepended to <varname>LDFLAGS</varname>
       </para>
      </listitem>
     </varlistentry>

     <varlistentry id="extend-pgxs-pg-libs">
      <term><varname>PG_LIBS</varname></term>
      <listitem>
       <para>
        will be added to <varname>PROGRAM</varname> link line
       </para>
      </listitem>
     </varlistentry>

     <varlistentry id="extend-pgxs-shlib-link">
      <term><varname>SHLIB_LINK</varname></term>
      <listitem>
       <para>
        will be added to <varname>MODULE_big</varname> link line
       </para>
      </listitem>
     </varlistentry>

     <varlistentry id="extend-pgxs-pg-config">
      <term><varname>PG_CONFIG</varname></term>
      <listitem>
       <para>
        path to <application>pg_config</application> program for the
        <productname>PostgreSQL</productname> installation to build against
        (typically just <literal>pg_config</literal> to use the first one in your
        <varname>PATH</varname>)
       </para>
      </listitem>
     </varlistentry>
    </variablelist>
   </para>

   <para>
    Put this makefile as <literal>Makefile</literal> in the directory
    which holds your extension. Then you can do
    <literal>make</literal> to compile, and then <literal>make
    install</literal> to install your module.  By default, the extension is
    compiled and installed for the
    <productname>PostgreSQL</productname> installation that
    corresponds to the first <command>pg_config</command> program
    found in your <varname>PATH</varname>.  You can use a different installation by
    setting <varname>PG_CONFIG</varname> to point to its
    <command>pg_config</command> program, either within the makefile
    or on the <literal>make</literal> command line.
   </para>

   <para>
    You can select a separate directory prefix in which to install your
    extension's files, by setting the <command>make</command> variable
    <varname>prefix</varname> when executing <literal>make install</literal>
    like so:
<programlisting>
make install prefix=/usr/local/postgresql
</programlisting>
    This will install the extension control and SQL files into
    <filename>/usr/local/postgresql/share</filename> and the shared modules into
    <filename>/usr/local/postgresql/lib</filename>.  If the prefix does not
    include the strings <literal>postgres</literal> or
    <literal>pgsql</literal>, such as
<programlisting>
make install prefix=/usr/local/extras
</programlisting>
    then <literal>postgresql</literal> will be appended to the directory
    names, installing the control and SQL files into
    <filename>/usr/local/extras/share/postgresql/extension</filename> and the
    shared modules into <filename>/usr/local/extras/lib/postgresql</filename>.