My problem was solved by adding -Wl,-Bsymbolic to the list of compiler flags. I found this from an old post on this mailing list. It's still not clear why this flag is needed though. -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://mta.openssl.org/pipermail/openssl-users/attachments/20160217/9e4f656a/attachment-0001.html>