When building the MIT kerberos libraries for inclusion with
OpenDarwin/x86, the krb4 library configure script needed updating.
Previous releases of OpenDarwin/x86 are available: 
http://www.opendarwin.org/downloads/

The change was simply removing the hard coded powerpc reference
in the configure.in script (please note: all the world is not a vax,
or powerpc in this case):
@@ -3,7 +3,7 @@
 AC_TYPE_MODE_T
 AC_TYPE_UID_T
 case $krb5_cv_host in
-     powerpc-apple-darwin*)
+     *-apple-darwin*)
      KRB_ERR_TXT=
      KRB_ERR=
      KRB_ERR_C=krb_err.c

Rob