Yocto

Prerequisites

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

Images

Standard 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

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

The following standard images are defined in the meta layer:

	core-image-minimal	small image that just boots the target device
	core-image-minimal-dev	core-image-minimal with headers and libraries allowing development work
	core-image-minimal-initramfs	core-image-minimal with kernel support for in-RAM filesystem
	core-image-base	console-only system fully supporting the target hardware
	core-image-full-cmdline	console-only image that includes many system tools
	core-image-x11	image with basic X11 and a terminal

Using devtool

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