I installed Atlas on Ubuntu 18.04 Mate using the command
sudo apt-get install libatlas-base-dev
I'm running this on an Odroid N2 (https://www.hardkernel.com/shop/odroid-n2-with-4gbyte-ram/), so it's an ARM system.
While the command to install it works, I can't find where it gets installed. I am trying to run GAMESS (https://www.msg.chem.iastate.edu/gamess/) and part of the configuration asks where I have installed ATLAS. In Ubuntu 16.04 Mate on an Odroid XU4, it was installed to /usr/lib/atlas-base, but I can't find it there. Thanks in advance for any help.