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4th chunk of `doc/src/sgml/ref/pg_config-ref.sgml`
5a3d53baf87a15904f7b19f0a9ffd5b39f19fb4cdce6f8390000000100000c8b
 <productname>PostgreSQL</productname>.  This shows linker switches.
      </para>
     </listitem>
    </varlistentry>

    <varlistentry>
     <term><option>--ldflags_ex</option></term>
     <listitem>
      <para>
       Print the value of the <varname>LDFLAGS_EX</varname> variable that was used for building
       <productname>PostgreSQL</productname>.  This shows linker switches
       used for building executables only.
      </para>
     </listitem>
    </varlistentry>

    <varlistentry>
     <term><option>--ldflags_sl</option></term>
     <listitem>
      <para>
       Print the value of the <varname>LDFLAGS_SL</varname> variable that was used for building
       <productname>PostgreSQL</productname>.  This shows linker switches
       used for building shared libraries only.
      </para>
     </listitem>
    </varlistentry>

    <varlistentry>
     <term><option>--libs</option></term>
     <listitem>
      <para>
       Print the value of the <varname>LIBS</varname> variable that was used for building
       <productname>PostgreSQL</productname>.  This normally contains <literal>-l</literal>
       switches for external libraries linked into <productname>PostgreSQL</productname>.
      </para>
     </listitem>
    </varlistentry>

    <varlistentry>
     <term><option>--version</option></term>
     <listitem>
      <para>
       Print the version of <productname>PostgreSQL</productname>.
      </para>
     </listitem>
    </varlistentry>

    <varlistentry>
     <term><option>-?</option></term>
     <term><option>--help</option></term>
      <listitem>
       <para>
        Show help about <application>pg_config</application> command line
        arguments, and exit.
       </para>
      </listitem>
     </varlistentry>
   </variablelist>

   If more than one option is given, the information is printed in that order,
   one item per line.  If no options are given, all available information
   is printed, with labels.
  </para>
 </refsect1>


 <refsect1>
  <title>Notes</title>

  <para>
   The options <option>--docdir</option>, <option>--pkgincludedir</option>,
   <option>--localedir</option>, <option>--mandir</option>,
   <option>--sharedir</option>, <option>--sysconfdir</option>,
   <option>--cc</option>, <option>--cppflags</option>,
   <option>--cflags</option>, <option>--cflags_sl</option>,
   <option>--ldflags</option>, <option>--ldflags_sl</option>,
   and <option>--libs</option> were added in <productname>PostgreSQL</productname> 8.1.
   The option <option>--htmldir</option> was added in <productname>PostgreSQL</productname> 8.4.
   The option <option>--ldflags_ex</option> was added in <productname>PostgreSQL</productname> 9.0.
  </para>
 </refsect1>


 <refsect1>
  <title>Example</title>

  <para>
   To reproduce the build configuration of the current PostgreSQL
   installation, run the following command:
<programlisting>
eval ./configure `pg_config --configure`
</programlisting>
   The output of <literal>pg_config --configure</literal> contains
   shell quotation marks so arguments with spaces are represented
   correctly.  Therefore, using <literal>eval</literal> is required
   for proper results.
  </para>
 </refsect1>

</refentry>
Title: pg_config Options: Libraries, Version, Help, and Notes
Summary
This section describes the remaining `pg_config` options including: `--libs` which shows the external libraries linked into PostgreSQL, `--version` which prints the PostgreSQL version, and `--help` which displays help information. It also includes a notes section indicating when certain options were added and an example demonstrating how to reproduce the build configuration of the current PostgreSQL installation using `pg_config`.