[Exim] Problem with exim/mysql compilation

Why do i get this error when compiling exim 3.34 with mySQL???

-ldb -lresolv -L/usr/lib/mysql -lmysqlclient -lmysys
/usr/lib/mysql/libmysqlclient.a(my_compress.o): In function `my_uncompress':
my_compress.o(.text+0xaa): undefined reference to `uncompress'
/usr/lib/mysql/libmysqlclient.a(my_compress.o): In function
`my_compress_alloc':
my_compress.o(.text+0x13c): undefined reference to `compress'
collect2: ld returned 1 exit status
make[1]: *** [exim] Error 1
make[1]: Leaving directory
`/data/public/linux-tjum/exim/exim-3.34/build-Linux-i386'
make: *** [go] Error 2

(I have all mySQL rpm's installed and the server is running with apache/php
and for ftp access control (pure-ftp, compiled on same sys))

/Michael