Install aircrack for ubuntu 12.04

Install requirement

sudo apt-get install build-essential libssl-dev

Grab the source and start building

wget http://download.aircrack-ng.org/aircrack-ng-1.1.tar.gz
tar -xzvf aircrack-ng-1.1.tar.gz
cd aircrack-ng-1.1
nano common.mak

Then find

CFLAGS          ?= -g -W -Wall -Werror -O3

And remove -Werror like this

CFLAGS          ?= -g -W -Wall -O3

Then start the install process
make
sudo make install
sudo airodump-ng-oui-update
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