Could you share the full commandline passed to the linker (you can copy it from the Console view)?
Your screenshot tells that it cannot find -l......, so it seems you have added a -l option with a file somehow, and it thinks it is a normal object file somehow. As for adding libraries: see Creating and using Libraries with ARM gcc and Eclipse | MCU on Eclipse where you can add the -l option with the search path. Another consideration (which seems not to be the case in your case: if you have spaces in the path, you need to put the path into double quotes).
I hope this helps,
Erich
Hello Luke,
I hope you are doing well.
MCUXpresso requires that you link the library’s path to the project properties. Here you will find a quick guide on how to do so: https://community.nxp.com/thread/388991
I hope this information helps. Do not hesitate to ask about any doubt or concern you have about your application.
Best regards,
Javier