yocto-public/4-workflow/distrocreate.md

Creation of a distribution based on poky-tiny

poky-tiny is a distribution that is packed with Yocto and is aimed to provide a very minimal OS for embeded systems.

Its is built to fit on a 8MB disk, and goes down to 1.5MB when compressed.

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Layer

The distribution must be put in a layer.

Since Yocto layers are versionned, it is better to create a new custom layer containing the distribution, and eventually additionnal softwares, machines, etc.

Distro config

$LAYER/conf/distro/my-distro.conf:

# Based on poky-tiny
require conf/distro/poky-tiny.conf

DISTRO = "my-distro"
DISTRO_NAME = "my-distro"
DISTRO_VERSION = "0"

# Install dropbear SSH server
IMAGE_INSTALL_append += " dropbear"

# Dropbear has also a feature to activate:
EXTRA_IMAGE_FEATURES = "ssh-server-dropbear"

# Install syslinux:
IMAGE_INSTALL_append += " syslinux"