od_sql_passwd</code> module requires OpenSSL support, so you <b>must</b>
use the <code>--enable-openssl</code> configuration option.  In addition,
if you have the <code>libsodium</code> library installed, simply include the
<code>libsodium</code> headers/libraries in the build command to enable
additional algorithms.

<p>
<b>NOTE</b>: it is <b>important</b> that <code>mod_sql_passwd</code> appear
<i>after</i> <code>mod_sql</code> in your <code>--with-modules</code> configure
option:
<pre>
  $ ./configure --