1 - Install packages on your buildserver
sudo apt-get install -y autoconf automake bison bzip2 curl cvs diffstat flex g++ gawk gcc gettext git-core gzip help2man ncurses-bin ncurses-dev libc6-dev libtool make texinfo patch perl pkg-config subversion tar texi2html wget zlib1g-dev chrpath libxml2-utils xsltproc libglib2.0-dev python-setuptools zip info coreutils diffstat chrpath libproc-processtable-perl libperl4-corelibs-perl sshpass default-jre default-jre-headless java-common libserf-dev qemu quilt libssl-dev
2 - Set your shell to /bin/bash.
sudo dpkg-reconfigure dash When asked: Install dash as /bin/sh? select "NO"
3 - Add user opennfrbuilder
sudo adduser opennfrbuilder
4 - Switch to user opennfrbuilder
su opennfrbuilder
5 - Switch to home of opennfrbuilder
cd ~
6 - Create folder opennfr
mkdir -p ~/opennfr
7 - Switch to folder opennfr
cd opennfr
8 - Clone oe-alliance git
git clone git://github.com/oe-alliance/build-enviroment.git -b 4.3
9 - Switch to folder build-enviroment
cd build-enviroment
10 - Update build-enviroment
make update
11 - Finally you can start building a image
MACHINE=mutant2400 DISTRO=opennfr DISTRO_TYPE=release make image