Errors building PHP 4.3.6

[Robert Fitzpatrick <robert@webtent.com>]

Maybe this is not the right place, but I have Heimdal 0.6 installed on
FreeBSD 5.2.1 and getting this error when trying to build and install
PHP 4.3.6. Can anyone suggest what the problem may be?

/usr/local/lib/libc-client4.so: warning: tmpnam() possibly used
unsafely; consider using mkstemp()
/usr/local/lib/libpq.so: undefined reference to `krb5_cc_get_principal'
/usr/local/lib/libpq.so: undefined reference to
`krb5_sname_to_principal'
/usr/local/lib/libpq.so: undefined reference to `krb5_cc_default'
/usr/local/lib/libpq.so: undefined reference to `krb5_cc_close'
/usr/local/lib/libpq.so: undefined reference to `error_message'
/usr/local/lib/libpq.so: undefined reference to `krb5_free_error'
/usr/local/lib/libpq.so: undefined reference to `krb5_sendauth'
/usr/local/lib/libpq.so: undefined reference to `krb5_free_principal'
/usr/local/lib/libpq.so: undefined reference to `krb5_unparse_name'
/usr/local/lib/libpq.so: undefined reference to `krb5_free_context'
/usr/local/lib/libpq.so: undefined reference to `krb5_init_context'
*** Error code 1

-- 
Robert