Yocto

Prerequisites

sudo apt install gcc g++ \
  python3-distutils python-is-python3

Images

Images are defined in recipe files. In order to separate them from package recipes, there is a convention to put image recipes into a folder named images. Making use of this, we can list all images defined by all layers via

ls meta*/recipes*/images/*.bb

Using devtool

Use devtool to make changes to an existing recipe and automatically generate an append recipe from those changes.