The best OS ever created!!!
In all seriousness, this repo contains a buildroot project to build a minimal Linux image to be used for the RPi on the pod.
The only real dependency here is buildroot (and all of buildroot's dependencies).
That being said, all dependencies can be installed via make dependencies.
For a one-shot, fully automated build, you can run ./build.sh.
For a more manual approach:
make kernel
make buildroot
make defconfig
makeThe defconfig for this proejct is configured to build with 8 parallel jobs. This
can be changed via the BR2_JLEVEL variable in the defconfig.
Once the base image has been created (sdcard.img), you can write it to an SD card with:
make sdcardThere also exist many GUIs to do this as well (including the official Raspberry Pi imager).
The main thing you will probably be tweaking is the rpi4_defconfig, short for "default
configuration". Buildroot provides a "GUI" to edit defconfig files (accessible via make menuconfig).
The process of editing the defconfig is as such:
make buildroot # if you haven't done this yet...
make defconfig # if you haven't done this yet...
make menuconfig
# make some changes in the menuconfig...
make savedefconfig # save the changes backA similar process can be applied to the kernel.conf for configuring the kernel.
make linux-menuconfig
# make some changes
make linux-update-defconfig