Useful resources and documentation to build a kernel for InkBox.
There are different toolchains in this repository. Depending on the device, a specific toolchain is needed.
n705,n905b,n905c,n613:TOOLCHAINDIR="${GITDIR}/toolchain/gcc-4.8"| You'll need to install 32-bit libraries on your system for it to work (unless you're on a 32-bit machine or VM, of course).n236,n437,n306,n306c,n873:TOOLCHAINDIR="${GITDIR}/toolchain/arm-nickel-linux-gnueabihf"kt:TOOLCHAINDIR="${GITDIR}/toolchain/gcc-4.4.1"n249:TOOLCHAINDIR="${GITDIR}/toolchain/armv7l-linux-musleabihf-cross/"
To compile a kernel for a device in particular (here, the Kobo Clara HD), use, for example:
env GITDIR=/home/build/inkbox/kernel TOOLCHAINDIR=/home/build/inkbox/compiled-binaries/armv7l-linux-musleabihf/ INIT_GCC=/home/build/inkbox/compiled-binaries/armv7l-linux-musleabihf/bin/armv7l-linux-musleabihf-gcc INIT_STRIP=/home/build/inkbox/compiled-binaries/armv7l-linux-musleabihf/bin/armv7l-linux-musleabihf-strip THREADS=32 TARGET=armv7l-linux-musleabihf scripts/build_kernel.sh n249 root
and change the relevant environment variables as needed.
- The
INIT_GCCandINIT_STRIPvariables should always point to anarmv7lmusl toolchain. - Don't forget to symlink the kernel repository to
/home/build/inkbox/kernelor create the repository in that location. The path is fixed. - Debian systems may not like your build command and need some
PATHchanges, like the following one:env -i PATH=/usr/bin:/bin:/sbin:/usr/sbin - If anything goes wrong, consider using a Debian container (2023 edit: this is probably a bad idea, rather consider using Arch Linux). You will need to install the following packages:
sudo apt install u-boot-tools make gcc xz-utils
- If a device has variants, remember to
git reset --hardbefore building. - To create the
modules.sqshsquashfs archive:mksquashfs dir new_modules.sqsh -b 1048576 -comp gzip -always-use-fragments