Install the needed dependencies to build Yocto:
apt install build-essential chrpath diffstat gawk libncurses5-dev python3-distutils texinfo
Create a folder to hold the different Yocto layers
mkdir yocto
Clone the dunfell version of Yocto:
git clone -b dunfell git://git.yoctoproject.org/poky.git poky-dunfell
Clone the meta layers within the dunfell folder:
cd poky-dunfell git clone -b dunfell git://git.openembedded.org/meta-openembedded git clone -b dunfell https://github.com/meta-qt5/meta-qt5.git git clone -b dunfell git://git.yoctoproject.org/meta-security.git
Clone the meta layer for the custom build recipes:
git clone -b dunfell https://github.com/jumpnow/meta-jumpnow.git
Create a directory next to the dunfell directory for the beagle bone black specific recipes:
mkdir bbb cd bbb git clone -b dunfell git://github.com/jumpnow/meta-bbb
Initialize the build directory for the beagle bone black:
source poky-dunfell/oe-init-build-env bbb/build
cp meta-bbb/conf/local.conf.sample build/conf/local.conf
cp meta-bbb/conf/bblayers.conf.sample build/conf/bblayers.conf
Edit bblayers.conf and replace the ${HOME} with the appropriate directory. In vim, the find and replace command is:
%s/${HOME}/\/media\/nick\/code\/yocto/g