problem with cyrus21-imapd-2.1.14 and debian sarge

Hello,

First, let me say that I'm new to this list, so please don't flame me
if I do something wrong in my first post....
I have a problem compiling cyrus21-imapd-2.1.14 using debian
sarge(testing).
The following steps led to the problem:
First I downloaded the source using following command:
"apt-get source cyrus21-imapd"
Then I changed to the "cyrus21-imapd-2.1.14"-dir and issued the
following command as mentioned
here(http://debian.org/doc/manuals/apt-ho...ling.en.html):
"dpkg-buildpackage -rfakeroot -uc -b"
It starts compiling but then soon fails with this error message:

gcc -c -I. -I.. -I. -I./../lib -I./../sieve -I./../acap -I../acap
-I/usr/include/et -I./../sieve -I/usr/include -I/usr/include
-DHAVE_CONFIG_H -Wall -Wall -pipe -g -O2 -W \
mupdate-client.c
In file included from mupdate-client.h:47,
from mupdate.h:56,
from mupdate-client.c:73:
mupdate_err.h:20: warning: `struct et_list' declared inside parameter
list
mupdate_err.h:20: warning: its scope is only this definition or
declaration, which is probably not what you want
In file included from mupdate.h:57,
from mupdate-client.c:73:
mupdate_err.h:20: warning: `struct et_list' declared inside parameter
list
mupdate_err.h:20: error: conflicting types for
`initialize_mupd_error_table_r'
mupdate_err.h:20: error: previous declaration of
`initialize_mupd_error_table_r'
In file included from mupdate-client.c:74:
mupdate_err.h:20: warning: `struct et_list' declared inside parameter
list
mupdate_err.h:20: error: conflicting types for
`initialize_mupd_error_table_r'
mupdate_err.h:20: error: previous declaration of
`initialize_mupd_error_table_r'
mupdate-client.c: In function `mupdate_find_cb':
mupdate-client.c:541: warning: comparison between signed and unsigned
mupdate-client.c:543: warning: comparison between signed and unsigned
make[2]: *** [mupdate-client.o] Error 1
make[2]: Leaving directory `/root/cyrus21-imapd-2.1.14/imap'
make[1]: *** [all] Error 1
make[1]: Leaving directory `/root/cyrus21-imapd-2.1.14'
make: *** [build-arch-stamp] Error 2
serverone:~/cyrus21-imapd-2.1.14#

I don't have an idea what the problem is.

Any help is appreciated.

Thanks in advance !

Simon Weber