[Exim] Building Exim 3.16 with MySQL Support fails

hi,

if I want to "make" exim with MySQL Support, but it fails with following
error:

...
lookups/lookups.a (mysql.o): In function 'mysql.tidy':
mysql.o(.text+0x36): undefined reference to 'mysql_close';
lookups/lookups.a (mysql.o): In function 'perform_mysql_search':
mysql.o(.text+0x195): undefined reference to 'mysql_init';
mysql.o(.text+0x1af): undefined reference to 'mysql_real_connect';
...

I have installed MySQL 3.22.32 from the Source-Distribution.

Any idea?

Thanks
BERND