Trying to make Maildrop 1.6.3 on OPenBSD 3.5 but this fails with make -s

./configure --enable-syslog=1 --enable-maildropmysql --with-mysqlconfig=/etc/maildropmysql.config --without-db --enable-maildirquota make -s

mdmysql.c:49: `querybuf' undeclared (first use in this function) mdmysql.c:64: warning: implicit declaration of function `mysql_query' mdmysql.c:73: warning: implicit declaration of function `mysql_store_result' mdmysql.c:79: `rec' undeclared (first use in this function) mdmysql.c:81: warning: implicit declaration of function `mysql_num_rows' mdmysql.c:83: warning: implicit declaration of function `mysql_free_result' mdmysql.c:88: `row' undeclared (first use in this function) mdmysql.c:88: warning: implicit declaration of function `mysql_fetch_row' *** Error code 1

Stop in /usr/src/maildrop-1.6.3/maildrop. *** Error code 1

Stop in /usr/src/maildrop-1.6.3/maildrop (line 287 of Makefile). *** Error code 1

Stop in /usr/src/maildrop-1.6.3 (line 548 of Makefile). #