#!/bin/bash

# Expect to be setting up a container or chroot

if [[ $(stat -c %d:%i /) != $(stat -c %d:%i /proc/1/root/.) ]]; then

echo "Running in chroot environment. Continuing..."

elif [[ -f /.dockerenv ]]; then

echo "Running in docker environment. Continuing..."

else

echo "Script must be running in a chroot environment. Exiting..."

exit 1

fi

set -xe

apt-get install -y gcc-5 g -5 g -5-multilib flex libosmesa6-dev libpcap-dev \

libhal-dev libsane-dev libv4l-dev libgphoto2-2-dev libcapi20-dev \

libgsm1-dev libmpg123-dev libvulkan-dev libxslt1-dev nasm yasm ccache

update-alternatives --install "$(command -v gcc)" gcc "$(command -v gcc-5)" 50

update-alternatives --set gcc "$(command -v gcc-5)"

update-alternatives --install "$(command -v g )" g "$(command -v g -5)" 50

update-alternatives --set g "$(command -v g -5)"

update-alternatives --install "$(command -v cpp)" cpp-bin "$(command -v cpp-5)" 50

update-alternatives --set cpp-bin "$(command -v cpp-5)"