Building Kernel

Recommended OS: Ubuntu 17.04 (I don't want to use Ubuntu either, cross-compiling is just simpler)

Build machine

Download this repo
apt-get install gcc-arm-linux-gnueabi g++-arm-linux-gnueabi
make ARCH=arm CROSS_COMPILE=arm-linux-gnueabi- oldconfig
- Use the default answer if questions come up
make ARCH=arm CROSS_COMPILE=arm-linux-gnueabi- modules_prepare
make ARCH=arm CROSS_COMPILE=arm-linux-gnueabi- zImage modules -j 8
Mount Wallaby SD card
Override zImage (/boot/zImage on data partition) with the one in /arch/arm/boot, ignore .dtb's
INSTALL_MOD_PATH=../modules make ARCH=arm CROSS_COMPILE=arm-linux-gnueabi- modules_install
Replace build folder in ../modules/lib/modules/3.18.21-custom/ with the whole kernel source
Symlink source to build with relative path

cd /lib/modules/3.18.21-custom/build && make scripts on Wallaby if you want to compile kernel modules