I successfully built OpenSSL v3.0.0 with the FIPS option from the current .gz download from the official OpenSSL site. I have also ensured my application code has been upgraded from OpenSSL '1.0.2t to v3.0.0 (v1.1.1l setters/getters). My application works great with OpenSSL v3.0.0 FIPS, as it had with 1.0.2t.
What's next? Am I FIPS? May I tell my customers that my application supports FIPS integrity? I am sure there must be more to be done before I can make this proclamation? FIP Certified?