Problems with kerberos on CentOS 5.x

Hello,

I'm trying to build php 5.2.9 on 64 bit CentOS 5.x with

--with-imap
--with-imap-ssl
--with-kerberos

This worked fine on CentOS 4, but on CentOS 5 I always get:

configure:
[...]
checking for IMAP support... yes
checking for IMAP Kerberos support... yes
checking for IMAP SSL support... yes
[...]

make:
[...]
/bin/sh /usr/src/redhat/BUILD/php-5.2.9/libtool --silent 
--preserve-dup-deps --mode=compile gcc  -Iext/imap/ 
-I/usr/src/redhat/BUILD/php-5.2.9/ext/imap/ -DPHP_ATOM_INC 
-I/usr/src/redhat/BUILD/php-5.2.9/include 
-I/usr/src/redhat/BUILD/php-5.2.9/main -I/usr/src/redhat/BUILD/php-5.2.9 
-I/usr/include/libxml2 -I/usr/kerberos/include 
-I/usr/src/redhat/BUILD/php-5.2.9/ext/date/lib -I/usr/include/freetype2 
-I/usr/include/ImageMagick -I/vrmd/webserver/imap/include 
-I/usr/src/redhat/BUILD/php-5.2.9/ext/mbstring/oniguruma 
-I/usr/src/redhat/BUILD/php-5.2.9/ext/mbstring/libmbfl 
-I/usr/src/redhat/BUILD/php-5.2.9/ext/mbstring/libmbfl/mbfl 
-I/vrmd/webserver/mhash/include -I/usr/include/mysql 
-I/usr/include/pspell -I/usr/src/redhat/BUILD/php-5.2.9/TSRM 
-I/usr/src/redhat/BUILD/php-5.2.9/Zend    -I/usr/include 
-I/usr/include/gssrpc -I/usr/include/gssapi -I/usr/include/gssglue 
-I/usr/include/gssglue/gssapi  -c 
/usr/src/redhat/BUILD/php-5.2.9/ext/imap/php_imap.c -o ext/imap/php_imap.lo
/usr/src/redhat/BUILD/php-5.2.9/ext/imap/php_imap.c: In function 
'zm_startup_imap':
/usr/src/redhat/BUILD/php-5.2.9/ext/imap/php_imap.c:477: error: 
'auth_gss' undeclared (first use in this function)
/usr/src/redhat/BUILD/php-5.2.9/ext/imap/php_imap.c:477: error: (Each 
undeclared identifier is reported only once
/usr/src/redhat/BUILD/php-5.2.9/ext/imap/php_imap.c:477: error: for each 
function it appears in.)
make: *** [ext/imap/php_imap.lo] Error 1

I tracked it down to this part in php_imap.c:

#if HAVE_IMAP_KRB && defined(HAVE_IMAP_AUTH_GSS)
         auth_link(&auth_gss);           /* link in the gss authenticator */
#endif

For some reason this constant is defined in main/php_config.h (created 
by configure), but it seems, that the required header files aren't included.

I passed several paths of gss includes to configure, but it didn't help:

CFLAGS="-I/usr/include/gssrpc -I/usr/include/gssapi 
-I/usr/include/gssglue -I/usr/include/gssglue/gssapi" ./configure [...]

Building php without --with-kerberos works fine. libgssapi-devel is 
installed, openssl-devel as well. Any ideas?

Kind regards
Marten