I just updated from Mojave to Big Sur and my 3.2-based legacy project no longer builds because of all the issues with xtensa tools not being from an authorized developer. I've had a surprisingly tough time finding the solution online

. The apple suggestion for handling this is by doing a ctrl-open on each application and selecting "Open" in the dialog, which is painful but works until I get to the shared object libraries which cannot be opened.
How did people get around this?
Thanks