Note to self: Next time remember to clean build when CMake is throwing an error, before you start whining to the library support team.

And you know that red refresh button in CLion that says "Reset Cache and Reload Project"? It doesn't "reset" as hard as you think. I found that when I have a serious nonsensical linking error, most of the times the solution is to delete the build directory by hand, and then reload the project.

@aritzh can't tell I use command line.