Some option lists in simfactory specify SSL_DIR rather than OPENSSL_DIR. The affected ones are for Carver, Tesla, Varia, and MacOS option lists.
The should all be changed to OPENSSL_DIR since this is the only variable that the OpenSSL external library looks for. This was tested to work fine on OSX Yosemite using homebrew but I cannot test it on the other machine.
If someone with access to them wants to test, then a simfactory branch is in rhaas/OPENSSL_DIR and a pull request is here:
Unless objections are raised I will commit this change on Monday before the ET call.