cvs head configure broken for --with-krb5 on RH9

As of this change:
http://archives.postgresql.org/pgsql-committers/2003-11/msg00278.php
I can't seem to configure --with-krb5.

The configure script I've used (derived from what the the RH9 RPM spec 
file does) for quite some time now is:

./configure \ --host=i386-redhat-linux \ --build=i386-redhat-linux \ --target=i386-redhat-linux-gnu \ --program-prefix=
\--prefix=/usr \ --exec-prefix=/usr \ --bindir=/usr/bin \ --sbindir=/usr/sbin \ --sysconfdir=/etc \
--datadir=/usr/share\ --includedir=/usr/include \ --libdir=/usr/lib \ --libexecdir=/usr/libexec \ --localstatedir=/var
\--sharedstatedir=/usr/com \ --mandir=/usr/share/man \ --disable-rpath \ --with-perl \ --with-tcl \
--with-tclconfig=/usr/lib\ --without-tk \ --with-python \ --enable-nls \ --enable-debug \ --enable-cassert \
--enable-depend\ --sysconfdir=/etc/sysconfig/pgsql \ --datadir=/usr/share/pgsql \ --with-docdir=/usr/share/doc \
--with-openssl\ --with-pam \ --enable-integer-datetimes \ --with-krb5=/usr/kerberos
 

With the above I get:

[...]
checking whether to build Java/JDBC tools... no
checking whether to build with Kerberos 4 support... no
checking whether to build with Kerberos 5 support... configure: error: 
no argument expected for --with-krb5 option


If I follow the advice of the error message, and change that last line 
to just "--with-krb5", I get this:

[...]
checking for inflate in -lz... yes
checking for library containing com_err... -lcom_err
checking for library containing krb5_encrypt... no
configure: error: could not find function 'krb5_encrypt' required for 
Kerberos 5

What should I be doing differently?

Joe