problem: compiling proftp with mysql module on macos xclient

i used the distribution mysql from www.entropy.ch i have the following problem if i compile the whole thing: etc... ./configure --with-modules=mod_sql:mod_sql_mysql --with-includes=/usr/local/include --with-libraries=/usr/local/mysql/bin make >>> ld: can't locate file for: -lmysqlclient what is the problem ? where can i find this file ? thanks for any reply ..