Mac OS - Hit Breakpoint in dynamic library

  • Is it possible to "break" in a dynamic library? I'm using Qt Creator 4.1.0 (based on Qt 5.7.0) and my OS is OSX Yosemite version 10.10.5. The app and dynamic libs are both debug builds.

    If I set a breakpoint in my application code before a library function is called, I can then step through the library code. However; I cannot set and hit a breakpoint in a dynamic library.

    Any help is appreciated.

  • Just an update. Not sure what I did, but there was a brief time where breakpoints started working. This lasted about a week, and then stopped after a made some changes to the dynamic library.

    The dynamic library is definitely a debug build. The frustrating thing is a know now it's possible, but I have no idea how to make it work consistently.

  • are they in the same project?

  • Hi,
    you usually cannot set breakpoints if you (why ever) do not rebuild the dynamic library after your changes, i.e. the source does not match the lib.

  • @VRonin
    The dynamic libraries are built outside of the Qt project. I use the Qt "Add Library" wizard to point to the libraries.

    As I mentioned in my first post, if I set a breakpoint in the Qt code just before a library function is called I can single step through the dynamic library code.

    What I can't do is place a breakpoint in the library code, start a debug session, and hit a breakpoint.

    Not sure why it worked for a brief time and now it stopped.

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