scaleway-virtualbox-module-build.sh

#!/bin/bash

# Expects Ubuntu 16.04 (xenial) and kernel 4.x.
# Based upon a blog post by Zach at http://zachzimm.com/blog/?p=191 & https://github.com/maedoc/scaleway-virtualbox

set -eux

# Have the user call sudo early so the credentials is valid later on
sudo whoami 


for x in xenial xenial-security xenial-updates; do 
  egrep -qe "deb-src.* $x " /etc/apt/sources.list || echo "deb-src http://archive.ubuntu.com/ubuntu ${x} main universe" | sudo tee -a /etc/apt/sources.list
done

echo "deb http://download.virtualbox.org/virtualbox/debian xenial contrib" | sudo tee -a /etc/apt/sources.list.d/virtualbox.list
wget -q https://www.virtualbox.org/download/oracle_vbox_2016.asc -O- | sudo apt-key add -
sudo apt update
sudo apt-get install dkms virtualbox-5.1 libssl-dev -y

export KERN_VERSION=$(uname -r |cut -d'-' -f1)
export EXTENDED_VERSION=$(uname -r |cut -d'-' -f2-)
cd /var/tmp
wget https://www.kernel.org/pub/linux/kernel/v4.x/linux-${KERN_VERSION}.tar.xz
tar xf linux-${KERN_VERSION}.tar.xz -C /var/tmp/
export KERN_DIR="/var/tmp/linux-${KERN_VERSION}"
cd "${KERN_DIR}"
zcat /proc/config.gz > .config

# Fetch the tools necessary to build the kernel. Using generic because there may not be a package for our $KERN_VERSION.
sudo apt-get build-dep linux-image-generic -y

NUM_CORES=$(cat /proc/cpuinfo|grep vendor_id|wc -l)

# Two options here: full kernel build, which gives no warnings later. Or this partial build:
# make -j${NUM_CORES} oldconfig include modules
# If you do the partial build, the vboxdrv setup step below will fail and can be fixed with a "sudo modprobe -f vboxdrv"
# Since that's annoying, I'm leaving the full build by default.
make -j${NUM_CORES}
sudo -E /sbin/rcvboxdrv setup --kernelsourcedir "${KERN_DIR}"
VBoxManage --version