I'm creating a custom board package for a project based on the Arduino Mkrzero. I plan to use the same dependencies as the mkrzero currently. I want the board to appear in the IDE as a different board however because I eventually want to create a custom bootloader for the project. The arduino mkrzero one is good enough for now. I have gotten the json file to work correctly, but using the downloaded board package causes an error.
recipe.preproc.macros pattern is missing
Error compiling for board Custom.
I feel like there is something I'm missing. I've looked at the relevant links listed under this forum post. , but I can't seem to find out why I am getting the above mentioned error.