Introduction

Ubuntu is pretty problematic to build cross tools, and you need a clean debian for using the "emdebian" toolchains

Details

 
$ *mkdir /opt/debian-chroot* 
$ *cd /opt/* 
$ *sudo debootstrap sid ./debian-chroot http://ftp.fr.debian.org/debian * 

Next chroot into it properly. Update the debian, and install the emdebian tools.

 
$ *sudo chroot /opt/debian-chroot /bin/bash* 
# *aptitude update && aptitude dist-upgrade && aptitude install emdebian-tools* 
...
 

After 200M of download and such, you're setup !