To support one of my previous posts I’ve put together some examples on how to build a thoroughly detailed component library in EAGLE. You can always place general components and then attribute them one-by-one. The issue with this is that it simply takes forever. Then if a component goes EOL you have to go through the process all over again. However, if you attribute the components at the library level you’ll only need to make the change once and then update the libraries from the schematic. Using the examples in the Github example below will ensure consistent and quality BOMs. Using this approach may take longer to get going due to having to create individual components, but it’s well worth it in the long run.
EAGLE Component Libraries – Jason Traud