Github user roodkcab commented on the issue:
https://github.com/apache/zookeeper/pull/639
P.S. u have to compile openssl from source before u can do `cmake
-DWITH_OPENSSL=$OPENSSL_INSTALL_DIRECTORY ../`. I tried to make openssl as a
git submodule and let cmake to find it using find_package but didn't work, then
I think it even better to make it as a option rather than make it as a
submodule, since someone don't need it at all will get a binary without linking
with ssl and crypto.---
