title: duplicate symbol _DEBUG_SWITCHER in
body: <p>When I used libMTKBleManager.a, the following error occurred at compile time, which is the only static library in my project, and when I set the Build Configuration to the release, compile success. Why?<a href="https://i.stack.imgur.com/rVex3.png" rel="nofollow noreferrer">enter image description here</a></p>