Yocto¶

1. Follow Yocto documentation to git clone Poky repository

https://docs.yoctoproject.org/brief-yoctoprojectqs/index.html

Attention: Make sure to clone "kirkstone" branch, as on any of the other layers

2. Locate at github and git clone required layers (kirkstone branch)

meta-rockchip (https://github.com/JeffyCN)
meta-openembedded (github)
meta-qt5 (use provided files)
meta-python2 (github)
meta-clang (github)
meta-rtlwifi (use provided files)

3. Copy cgroups.cfg to meta-rockchip/recipes-kernel/linux/files

4. Execute from terminal:

cd /poky 
. oe-init-build-env build-rockchip/

5. copy bblayers.conf to build-rockchip/conf folder
   copy local.conf to build-rockchip/conf folder
   copy ddutil to meta-rockchip/recipes-devtools
   copy librkcrypto to meta-rockchip/recipes-devtools

Yocto folders must be like in this image (do not clone deleted folders)

6. copy linux-rockchip_4.19.bb to meta-rockchip/recipes-kernel/linux

7. execute:

bitbake core-image-minimal

Note:
if bitbake fails with error at QT then go to "07. SDK QT5" folder