Raspberry:

Start with a updated system:
sudo apt-get update && sudo apt-get dist-upgrade -y
Next some requisition:
sudo  apt-get install libnl-dev libssl-dev iw -y
Now grab yourself a beer and the latest sources from the aircack-ng site:
wget http://download.aircrack-ng.org/aircrack-ng-1.2-rc4.tar.gz
Time to compile it:(and drink that beer.)
tar -zxf aircrack-ng-1.2-rc4.tar.gz
cd aircrack-ng-1.2-rc4
make
sudo make install
Last step before we can test is to install Airodump-ng OUI file:
sudo airodump-ng-oui-update
Now put your wifi in monitor mode and check if you can read packages:
sudo airmon-ng start wlan0
sudo airodump-ng mon0
Cleanup:
cd ..
rm -rf aircrack-ng*