You can use Wic in two different modes, depending on how much control you need for specifying the Openembedded build artifacts that are used for creating the image: Raw and Cooked:
Raw Mode: You explicitly specify build artifacts through command-line arguments.
Cooked Mode:
The current
MACHINE
setting and image name are used to automatically
locate and provide the build artifacts.
Regardless of the mode you use, you need to have the build
artifacts ready and available.
Additionally, the environment must be set up using the
oe-init-build-env
or
oe-init-build-env-memres
script found in the
Build Directory.