nm

List symbol names in object files. More information: https://manned.org/nm.

• List global (extern) functions in a file (prefixed with T):
  nm -g {{path/to/file.o}}
• List only undefined symbols in a file:
  nm -u {{path/to/file.o}}
• List all symbols, even debugging symbols:
  nm -a {{path/to/file.o}}
• Demangle C++ symbols (make them readable):
  nm --demangle {{path/to/file.o}}