Ubuntu 20.04.1 LTS (Kernel 5.4.0)
https://github.com/oe-alliance/oe-alliance-core/tree/4.4
and a lot more...
1 - Install packages on your buildserver
sudo apt-get install -y autoconf automake bison bzip2 chrpath coreutils cpio curl cvs debianutils default-jre default-jre-headless diffstat flex g++ gawk gcc gcc-8 gcc-multilib g++-multilib gettext git git-core gzip help2man info iputils-ping java-common libc6-dev libegl1-mesa libglib2.0-dev libncurses5-dev libperl4-corelibs-perl libproc-processtable-perl libsdl1.2-dev libserf-dev libtool libxml2-utils make ncurses-bin patch perl pkg-config psmisc python3 python3-git python3-jinja2 python3-pexpect python3-pip python-setuptools qemu quilt socat sshpass subversion tar texi2html texinfo unzip wget xsltproc xterm xz-utils zip zlib1g-dev fakeroot
2 - Set python2 as preferred provider for python
sudo update-alternatives --install /usr/bin/python python /usr/bin/python2 1
sudo update-alternatives --install /usr/bin/python python /usr/bin/python3 2
sudo update-alternatives --config python
select python2
3 - Set your shell to /bin/bash.
sudo dpkg-reconfigure dash
When asked: Install dash as /bin/sh?
select "NO"
4 - modify max_user_watches
echo fs.inotify.max_user_watches=524288 | sudo tee -a /etc/sysctl.conf
sudo sysctl -n -w fs.inotify.max_user_watches=524288
5 - Add user openatvbuilder
sudo adduser openatvbuilder
6 - Switch to user openatvbuilder
su openatvbuilder
7 - Switch to home of openatvbuilder
cd ~
8 - Create folder openatv
mkdir -p ~/openatv
9 - Switch to folder openatv
cd openatv
10 - Clone oe-alliance git
git clone https://github.com/oe-alliance/build-enviroment.git -b 4.4
11 - Switch to folder build-enviroment
cd build-enviroment
12 - Update build-enviroment
make update
13 - Finally you can start building a image
MACHINE=zgemmah9combo DISTRO=openatv DISTRO_TYPE=release make image