# When I try ./configure on Red Hat 9 Linux or higher, it complains about OpenSSL headers not found.

<div class="aside">
<p>Try:</p>
<blockquote>
<pre><strong>./configure --with-ssl-headers=/usr/kerberos/include</strong></pre>
</blockquote>
<p>or</p>
<blockquote>
<pre><strong>export CPPFLAGS=-I/usr/kerberos/include && ./configure</strong></pre>
</blockquote>
</div>