This is a basic plugin that shows how to use the X-Plane SDK CMake scripts. It's a quick way to get a plugin up and running without writing lots of boilerplate CMake, and tweaking linker settings to make your plugin load in X-Plane.
This will build the example plugin:
mkdir build
cd build && cmake .. && make
You should have mac.xpl, lin.xpl or win.xpl in the build folder, ready to go.