This application note explains how to build the Linux BSP from the git repositories.
Linux Host Requirements
Linux host requirements are as follows: Ubuntu 20.04 with the recommended amount of free space of at least 250 GB.
Setting Up Linux Host
Prepare the Linux host for the build:
$ sudo apt-get install gawk wget git-core diffstat unzip texinfo gcc-multilib \
build-essential chrpath socat cpio python python3 python3-pip python3-pexpect \
xz-utils debianutils iputils-ping libbz2-dev libz-dev python2.7 dfu-util libusb-1.0.0-dev
$ sudo dpkg-reconfigure dash # Say "No" to not use "dash" as the default system shell.
$ wget https://storage.googleapis.com/git-repo-downloads/repo
$ chmod 755 repo
$ sudo cp repo /usr/local/bin/
Clone the build script:
$ git clone -b imx-5.15-32-vb https://github.com/voxelbotics/meta-vb-imx8mp.git
Checkout an appropriate release tag (e.g. 1.0.5-213):
$ cd meta-vb-imx8mp $ git checkout 1.0.5-213
Create directories for the Yocto cache and downloads:
$ sudo mkdir -p /home/cache/CACHE/5.15.32/sstate-cache $ sudo mkdir -p /home/cache/CACHE/5.15.32/downloads $ sudo chmod 777 /home/cache/CACHE/5.15.32/sstate-cache /home/cache/CACHE/5.15.32/downloads
Building Images
Run the build script to build the release images:
$ sh meta-vb-imx8mp/scripts/build5-15-32.sh -t 1.0.5-213 ...
Building a Specific Release
In the above example, the script will build from the 1.0.5-213 release tag in the source repositories https://github.com/voxelbotics/meta-vb-imx8mp , https://github.com/voxelbotics/linux-imx , https://github.com/voxelbotics/u-boot-imx.
If you would like to build from the top-of-the trunk of the imx-5.15.32-vb development branches, run the script as below:
$ cd meta-vb-imx-8mp $ git checkout imx-5.15.32-vb $ cd .. $ sh meta-vb-imx8mp/scripts/build5-15-32.sh -b imx-5.15.32-vb ...
Understanding Build Artefacts
After the build, the resultant build artefacts will be located in the build-desktop/ directory:
$ ls -l build-desktop/builddir/tmp/deploy/images/imx8mpnavq/ ... -rwxr-xr-x 1 build build 7054552 Sep 25 10:49 uuu -rw-r--r-- 1 build build 1508656 Sep 25 10:49 imx-boot-imx8mpnavq-sd.bin-flash_evk -rw-r--r-- 1 build build 1605 Sep 25 10:54 navq-install-desktop.uuu lrwxrwxrwx 1 build build 58 Sep 25 10:59 imx-image-desktop-imx8mpnavq.wic.bz2 -> imx-image-desktop-imx8mpnavq-20220925084849.rootfs.wic.bz2 lrwxrwxrwx 1 build build 52 Sep 25 10:54 navq-install-initrd.uImage -> navq-install-initrd-imx8mpnavq-20220925084849.uImage -rw-r--r-- 1 build build 258 Sep 25 10:54 partitions.sfdisk lrwxrwxrwx 2 build build 63 Sep 25 10:51 Image -> Image--5.15.32+git0+7035788108-r0-imx8mpnavq-20220925084849.bin lrwxrwxrwx 2 build build 69 Sep 25 10:51 imx8mp-navq.dtb -> imx8mp-navq--5.15.32+git0+7035788108-r0-imx8mpnavq-20220925084849.dtb