Not after the final link, but I'm pretty sure we were using `-fdata-sections -ffunction-sections -Wl,--gc-sections`. I think that would strip any unwind section too, if it was present. Wouldn't it?
Anyway, we likely didn't generate them in the first place.
We didn't have a lot of available space, so all binaries deployed were stripped and we didn't ship any additional debug information. Hence why I left the DWARF parsing as an "exercise for the reader", I didn't do it back then. I had to use addr2line on my PC with the debug data I had locally.