Kas files

Building an Image

Native Build

On a compatible distribution, install the packages that Yocto 3.1 requires.

Furthermore, install the kas build tool:

$ sudo pip3 install kas

Clone the kas-files repository (or unpack an archive of it) into a work directory:

$ git clone https://github.com/texierp/kas-files

Now you can build an image like this:

$ kas build kas-files/kas-poky.yml:kas-files/board-<machine name>.yml

You can replace machine name by the following machine config file:

├── board-beaglebone-yocto.yml
├── board-imx7d-pico.yml
├── board-imx7s-warp.yml
├── board-nitrogen8m.yml
├── board-qemuarm-testimage.yml
├── board-raspberrypi3.yml
├── board-raspberrypi4.yml
├── board-sama5d27-som1-ek-sd.yml
├── board-stm32mp157a-dk1.yml
├── docker-raspberrypi3.yml
├── swupdate-raspberrypi3.yml
└── swupdate-sama5d27-som1-ek-sd.yml

See after for the raspberrypi3:

$ kas build kas-files/kas-poky.yml:kas-files/board-raspberrypi3.yml

Docker Build

Make sure Docker is installed and properly configured for your host system. You may have to switch the storage driver away from legacy aufs, see Docker documentation, if kas warns about this.

Again, the first step is cloning of the repository (or unpacking an archive):

$ git clone https://github.com/texierp/kas-files

Next, install the kas-container script like this:

$ wget https://raw.githubusercontent.com/siemens/kas/master/kas-container
$ chmod a+x kas-container

Now you can generate a desired image. The following assumes that your user has permission to use docker. Usually, this is achieved by adding the user to the docker group (which has security implications). Note that running the build as root does not work.

$ ./kas-container build kas-files/kas-poky.yml:kas-files/board-raspberrypi3.yml

The above command disposes the build container after use, keeping downloads and build results in the current work directory.

Maintainer

• Pierre-Jean Texier