Hackers,
Looks like Mac OS X 10.11 El Capitan has remove the OpenSSL header files. They recommend building your own or using native OS X SDKs, like Secure Transport:
http://lists.apple.com/archives/macnetworkprog/2015/Jun/msg00025.html
I don’t suppose anyone has looked at what it would take to get PostgreSQL use Secure Transport, right? Here are the docs:
https://developer.apple.com/library/ios/documentation/Security/Reference/secureTransportRef/index.html
If it’s not feasible, those of use who need SSL connections on OS X will just have to build OpenSSL ourselves (or install from Homebrew or MacPorts).
David