Pro*C compile errors after upgrading to RHEL8 - workaround listed in doc 2931232.1 is not tenable

We are working on upgrading to RHEL8, and ran into an issue with compiling our Pro*C code (the compile is running against the Oracle Client 19c client). We found oracle support doc 2931232.1 that is the exact issue we are having. However, even after applying the Jan 23 RU patch (19.18), this issue continues to happen. This leads me to believe we also need to implement the workaround listed in the doc. However said workaround (update the header on everything) is untenable due to having over 1000 files that would need to be updated (although one of our SW folks did try this on a few files, and those files stopped erroring). Does anyone have suggestions on another way around this issue such that we can successfully compile Pro*C