MYSQL 5.0 kurmaya çalışırken aldığım hata

sys.a  ../dbug/libdbug.a ../strings/libmystrings.a  ../zlib/libzlt.la -pthread -lcrypt -lm  -pthread
mkdir .libs
libtool: link: cannot find the library `../zlib/libzlt.la' or unhandled argument `../zlib/libzlt.la'
*** Error code 1
1 error
*** Error code 1
1 error
*** Error code 2
1 error
*** Error code 1
1 error
*** Error code 2
1 error
*** Error code 1

Stop in /usr/ports/databases/mysql50-server.