bitbake sizecheck

do_sizecheck() {
  if [ ! -z ${ROOTFS_MAXSIZE} ]; then
    size=$(ls -l ${DEPLOY_DIR_IMAGE}/${IMAGE_NAME}${IMAGE_NAME_SUFFIX}.jffs2 | awk '{ print $5}')
    echo "$size"
    if [ $size -ge ${KERNEL_IMAGE_MAXSIZE} ]; then
      bbfatal  "This rootfs (size=$size) is too big for your device (${ROOTFS_MAXSIZE}). Please reduce the size of the rootfs."
    fi
  fi
}