Building Yocto for LEC‐IMX8M

1. Set up a build host environment

1.1 Recommended Hardware for the host

• Intel Core-i7 Processor (>= 4 cores)
• at least 8GB of Memory
• at least 500GB Disk sapce
• Ubuntu 20.04 LTS 64-bit version for Yocto Project Build
• High-speed network connectivity

1.2 Essential host Packages are required to be installed on your host

$ sudo apt-get install gawk wget git-core diffstat unzip texinfo gcc-multilib build-essential chrpath socat cpio python3 python3-pip python3-pexpect xz-utils debianutils iputils-ping python3-git python3-jinja2 libegl1-mesa libsdl1.2-dev pylint xterm zstd liblz4-tool curl git python-is-python3

Note: Don't use the root account to build Yocto. it might cause unpredictable errors.

1.3 "Google repo" packages is required to be installed on your host

$ mkdir ~/bin (this step may not be needed if the bin folder already exists)
$ curl https://storage.googleapis.com/git-repo-downloads/repo > ~/bin/repo
$ chmod a+x ~/bin/repo
$ export PATH=${PATH}:~/bin

1.4 Before star to build the source, please make sure that git is set up properly with the commands below

$ git config --global user.name "Your Name"
$ git config --global user.email "Your Email"
$ git config --list

2.2 Download the required meta-layers.

It's recommended to use the latest branch and manifest file to build the Yocto image. Here you can find the available branches and manifest files.

For instance zeus branch

$ repo init -u https://github.com/ADLINK/adlink-manifest -b lec-imx-yocto-zeus -m adlink-lec-imx8m-yocto-zeus_5.4.3-1.0.0_3v2.xml
$ repo sync
$ MACHINE=lec-imx8m DISTRO=fsl-imx-wayland source adlink-imx-setup-release.sh -b <build_dir>

2.3 Build the image

$ bitbake core-image-base

Note: Sometimes the build may fail due to the traffic/server try again after sometime

2.4 Image is generated as core-image-weston-lec-imx8m.sdcard in <build_dir>/tmp/deploy/image/lec-imx8m/.

3. Flashing the Yocto image

Please refer to here.