GCC forces all symbols in the link library

wants to abstract SDK related functions out of a library for app to call.
thus the app-related code is compiled and linked to the library to generate the final elf executable.

method:

Add -wl,–whole-archive,

, add their own library to the mandatory link

,–no whole-archive restore

:
– Wl, — the whole – archive xx. A – Wl, – no – whole – archive