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<section id="compilation-errors-about-kssl-h-and-krb5-h-on-red-hat-linux-fedora">
<span id="compilationerrors"></span><h1>Compilation errors about kssl.h and krb5.h on Red Hat Linux/Fedora<a class="headerlink" href="#compilation-errors-about-kssl-h-and-krb5-h-on-red-hat-linux-fedora" title="Permalink to this heading"></a></h1>
<p>When trying to compile Cyrus IMAPd on Red Hat Linux or Fedora, you may be encountering errors like these:</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span>In file included from /usr/include/openssl/ssl.h:179,
from prot.h:56,
from prot.c:72:
/usr/include/openssl/kssl.h:72:18: krb5.h: No such file or directory
In file included from /usr/include/openssl/ssl.h:179,
from prot.h:56,
from prot.c:72:
/usr/include/openssl/kssl.h:134: syntax error before "krb5_enctype"
/usr/include/openssl/kssl.h:136: syntax error before '*' token
/usr/include/openssl/kssl.h:137: syntax error before '}' token
/usr/include/openssl/kssl.h:149: syntax error before "kssl_ctx_setstring"
/usr/include/openssl/kssl.h:149: syntax error before '*' token
/usr/include/openssl/kssl.h:150: syntax error before '*' token
/usr/include/openssl/kssl.h:151: syntax error before '*' token
/usr/include/openssl/kssl.h:151: syntax error before '*' token
/usr/include/openssl/kssl.h:152: syntax error before '*' token
/usr/include/openssl/kssl.h:153: syntax error before "kssl_ctx_setprinc"
/usr/include/openssl/kssl.h:153: syntax error before '*' token
/usr/include/openssl/kssl.h:155: syntax error before "kssl_cget_tkt"
/usr/include/openssl/kssl.h:155: syntax error before '*' token
/usr/include/openssl/kssl.h:157: syntax error before "kssl_sget_tkt"
/usr/include/openssl/kssl.h:157: syntax error before '*' token
/usr/include/openssl/kssl.h:159: syntax error before "kssl_ctx_setkey"
/usr/include/openssl/kssl.h:159: syntax error before '*' token
/usr/include/openssl/kssl.h:161: syntax error before "context"
/usr/include/openssl/kssl.h:162: syntax error before
"kssl_build_principal_2"
/usr/include/openssl/kssl.h:162: syntax error before "context"
/usr/include/openssl/kssl.h:165: syntax error before "kssl_validate_times"
/usr/include/openssl/kssl.h:165: syntax error before "atime"
/usr/include/openssl/kssl.h:167: syntax error before "kssl_check_authent"
/usr/include/openssl/kssl.h:167: syntax error before '*' token
/usr/include/openssl/kssl.h:169: syntax error before "enctype"
In file included from prot.h:56,
from prot.c:72:
/usr/include/openssl/ssl.h:909: syntax error before "KSSL_CTX"
/usr/include/openssl/ssl.h:931: syntax error before '}' token
make[1]: *** [prot.o] Error 1
make[1]: Leaving directory `/opt/cyrus-imapd-2.2.3/lib'
make: *** [all] Error 1
</pre></div>
</div>
<p>The key bit of this error is:</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="o">/</span><span class="n">usr</span><span class="o">/</span><span class="n">include</span><span class="o">/</span><span class="n">openssl</span><span class="o">/</span><span class="n">kssl</span><span class="o">.</span><span class="n">h</span><span class="p">:</span><span class="mi">72</span><span class="p">:</span><span class="mi">18</span><span class="p">:</span> <span class="n">krb5</span><span class="o">.</span><span class="n">h</span><span class="p">:</span> <span class="n">No</span> <span class="n">such</span> <span class="n">file</span> <span class="ow">or</span> <span class="n">directory</span>
</pre></div>
</div>
<p>Essentially, what is happening is that Cyrus is trying to use OpenSSL, and OpenSSL's headers include some Kerberos header files. Red Hat, in their infinite wisdom, chose to place the Kerberos headers outside the normal header search path, despite having built OpenSSL to require the Kerberos headers. As a result, even if your program is not using Kerberos, it may fail to compile if gcc can't find the Kerberos headers.</p>
<p>The solution is to either add the Kerberos headers to gcc's header search path, or prevent OpenSSL from trying to use the Kerberos includes in the first place. To tell OpenSSL you really don't want kerberos, just run:</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">export</span> <span class="n">LOCALDEFS</span><span class="o">=</span><span class="s2">"-DOPENSSL_NO_KRB5"</span>
</pre></div>
</div>
<p>(as suggested by Ken Murchison on info-cyrus) before you run ./configure. Alternately, you can tell gcc where to find the Kerberos includes so that it'll stop complaining:</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">export</span> <span class="n">C_INCLUDE_PATH</span><span class="o">=</span><span class="s2">"/usr/kerberos/include"</span>
</pre></div>
</div>
<p>If neither of these work, make sure you have the Kerberos development libraries installed ( you should have if you have openssl-devel, but one never does know ...). If you run <code class="docutils literal notranslate"><span class="pre">rpm</span> <span class="pre">-q</span> <span class="pre">openssl-devel</span> <span class="pre">krb5-devel</span></code> you should get a result like:</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">openssl</span><span class="o">-</span><span class="n">devel</span><span class="o">-</span><span class="mf">0.9.7</span><span class="n">a</span><span class="o">-</span><span class="mi">23</span>
<span class="n">krb5</span><span class="o">-</span><span class="n">devel</span><span class="o">-</span><span class="mf">1.3.1</span><span class="o">-</span><span class="mi">6</span>
</pre></div>
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