mysql50 doesn't compile on FreeBSD 4.11

[Jack L.]

I keep getting this error on 2 boxes running FreeBSD 4.11 when compiling
mysql 5.0.17

/usr/local/bin/libtool15 --preserve-dup-deps --mode=link cc  -DDBUG_OFF -O
-pipe -march=k6 -D_THREAD_SAFE -O3 -fno-omit-frame-pointer
-rpath=/usr/lib:/usr/local/lib -L/usr/local/lib -o libmysqlclient_r.la
-rpath /usr/local/lib/mysql -version-info 15:0:0 libmysql.lo password.lo
manager.lo get_password.lo  errmsg.lo my_init.lo my_static.lo my_malloc.lo
my_realloc.lo  my_create.lo my_delete.lo mf_tempfile.lo my_open.lo
my_file.lo my_read.lo my_write.lo errors.lo  my_error.lo my_getwd.lo
my_div.lo  mf_pack.lo my_messnc.lo mf_dirname.lo mf_fn_ext.lo mf_wcomp.lo
typelib.lo safemalloc.lo my_alloc.lo  mf_format.lo mf_path.lo mf_unixpath.lo
my_fopen.lo  my_symlink.lo my_fstream.lo  mf_loadpath.lo my_pthread.lo
my_thr_init.lo  thr_mutex.lo mulalloc.lo string.lo 
default.lodefault_modify.lo  my_compress.lo
array.lo my_once.lo list.lo my_net.lo  charset.lo charset-def.lo
hash.lomf_iocache.lo  mf_iocache2.lo my_seek.lo my_sleep.lo 
my_pread.lo
mf_cache.lo md5.lo sha1.lo  my_getopt.lo my_gethostbyname.lo my_port.lo
my_rename.lo my_chsize.lo my_lib.lo strmov.lo strxmov.lo strxnmov.lo
strnmov.lo  strmake.lo strend.lo strtod.lo  strnlen.lo strfill.lois_prefix.lo
int2str.lo str2int.lo strinstr.lo strcont.lo  strcend.lo bcmp.lo
ctype-latin1.lo  bchange.lo bmove.lo bmove_upp.lo longlong2str.lo
strtoull.lo strtoll.lo llstr.lo my_vsnprintf.lo  ctype.lo ctype-simple.lo
ctype-bin.lo ctype-mb.lo  ctype-big5.lo ctype-czech.lo ctype-cp932.lo
ctype-eucjpms.lo ctype-euc_kr.lo  ctype-win1250ch.lo ctype-utf8.lo
ctype-extra.lo  ctype-ucs2.lo ctype-gb2312.lo ctype-gbk.lo  ctype-sjis.lo
ctype-tis620.lo ctype-ujis.lo  ctype-uca.lo xml.lo my_strtoll10.lo
str_alloc.lo dbug.lo  pack.lo client.lo my_time.lo vio.lo viosocket.lo
viossl.lo viosslfactories.lo net.lo -pthread -lcrypt -lm  -pthread
../zlib/libz.la -L/usr/lib -lssl -lcrypto
libtool15: link: cannot find the library `../zlib/libz.la' or unhandled
argument `../zlib/libz.la'
*** Error code 1

Stop in /usr/ports/databases/mysql50-client/work/mysql-5.0.17/libmysql_r.
*** Error code 1

Stop in /usr/ports/databases/mysql50-client/work/mysql-5.0.17.
*** Error code 1

Stop in /usr/ports/databases/mysql50-client/work/mysql-5.0.17.
*** Error code 1