I just wanted to add a note that I've been using the patches listed here with bacula15 on aarch64 for ~a month. The patch sysutils/bacula13-server/files/patch-src_lib_bsys.c applies cleanly to bacula15-server as well, and bacula-fd on ARM seems to be doing its job perfectly. I've been running this on a bunch raspberry pi 3 and 4s and both the backup and restore functionality works as intended. Unfortunately, I don't have any risc-v boards to validate that part, so I can only add a "works for me" on aarch64.