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1. Релизы Yocto https://wiki.yoctoproject.org/wiki/Releases

Codename	Yocto	Date	Version	Support	Level	Poky	BitBake
Pyro	2.3	Apr 2017	Development
Morty	2.2	Oct 2016	Development
Krogoth	2.1	Apr 2016	2.1	Stable	15.0	1.30
Jethro	2.0	Nov 2015	2.0	Stable	14.0	1.28
Fido	1.8	Apr 2015	1.8.1	Community	13.0	1.26
Dizzy	1.7	Oct 2014	1.7.3	Community	12.0	1.24
Daisy	1.6	Apr 2014	1.6.3	Community	11.0	1.22
Dora	1.5	Oct 2013	1.5.4	Community	10.0	1.20
Dylan	1.4	Apr 2013	1.4.3*	Community	9.0	1.18
Danny	1.3	Oct 2012	1.3.2	Community	8.0 1.16
Denzil	1.2	Apr 2012	1.2.2	Community	7.0	1.15
Edison	1.1	Oct 2011?	1.1.2	Community	6.0	1.13

1. Магия 'source poky/oe-init-build-env'

• poky/oe-init-build-env - Точка входа для инициализации переменных окружения, подготовки файлов и директорий
  • poky/scripts/oe-buildenv-internal
    • Создание BUILDDIR
    • Установка переменных окружения BUILDDIR, BITBAKEDIR, OEROOT
    • Добавление в path '${OEROOT}/scripts' и '$BITBAKEDIR/bin'
  • poky/scripts/oe-setup-builddir
    • Создание директории $BUILDDIR/conf
    • Создание файлов $BUILDDIR/conf/[templateconf.cfg, bblayers.conf, local.conf]