Liangxu Linux

Oct 12, 2025 · Fundamentals

Mastering Strong and Weak Functions in C for Flexible Embedded Design

This article explains the concept of strong and weak functions in C, shows how to declare them with GCC and other compilers, outlines the linker selection rules, and demonstrates practical uses such as library overrides, interrupt handlers, callbacks, test stubs, plugin systems, and related pitfalls.