Aircrack-Ng Airmon-ng command not found

I am using a Mac OS X 10.10 Yosemite, I downloaded OpenSSL version 1.0.1k, I have SQLite3, and I have gmake 3.8.1- which are the requirements, right?
So I did:
wget http://download.aircrack-ng.org/aircrack-ng-1.2-rc1.tar.gz
 tar -zxvf aircrack-ng-1.2-r...