for the past little bit I've been slowly working on developing a hobbyist kernel, and for all that time I've been using GDB with QEMU to investigate memory locations and registers and what not. However I recently wiped my Mac and installed a fresh copy of macOS Big Sur, and while GDB from homebrew on Mojave was able to load my kernel binary just fine, on Big Sur, it simply throws this error message:
Reading symbols from ~/Kernel/bin/kernel... I'm sorry, Dave, I can't do that. Symbol format `elf32-i386' unknown.
I have no clue what's causing it, I'm using the stock version of GDB from homebrew, GDB 10.1. I also tried using i386-elf-gdb from homebrew but that doesn't work either. I even tried compiling GDB myself, and setting all sorts of configure options such as --enable-targets=all, and setting the target to i686-elf, but nothing seems to work, none of my configure options will enable any GDB on macOS Big Sur, either compiled from source, or downloaded from homebrew, to read elf32-i386 kernel binaries.