> I'm attempting to build our RHEL 7 based product on RHEL 8 and running into a lot of changes from openssl 1.0.2k-fips (RHEL 7) to 1.1.1 FIPS (RHEL 8). I haven't found a good guide to adapting the sources to these changes. Web search for "openssl opaque accessors" turns up many hits; these two seem useful: https://wiki.openssl.org/index.php/OpenSSL_1.1.0_Changes http://vega.pgw.jp/~kabe/vsd/migrate2openssl-1.1.html PS: A long confidential email disclaimer is silly, particularly when posting to a large public mailing list. :)