By default, the core-image-minimal size for the wandboard-quad unpacked tarball is around 45 MB, and core-image-sato is around 150 MB. This recipe will explore methods to reduce their size.
An example of a small image, core-image-small, that does not include the packagegroup-core-boot recipe and can be used as the base for a root filesystem image with reduced size, recipes-core/images/core-image-small.bb, is shown next:
DESCRIPTION = "Minimal console image."
IMAGE_INSTALL= "\
base-files \
base-passwd \
busybox \
sysvinit \
initscripts \
${ROOTFS_PKGMANAGE_BOOTSTRAP} \
${CORE_IMAGE_EXTRA_INSTALL} \
"
IMAGE_LINGUAS = " "
LICENSE = "MIT"
inherit core-image
IMAGE_ROOTFS_SIZE ?= "8192"This recipe produces an image of about 6.4 MB. You can go even smaller if you use the poky-tiny distribution by adding the following to your conf/local.conf file:
DISTRO = "poky-tiny"