Actually I resolved this myself. It seems the instructions are woefully old since building the app uses cmake now.
So just in case anyone is interested…here’s my suggested commands.
Make Swap File
dd if=/dev/zero of=/swapfile bs=64M count=16 && mkswap /swapfile && swapon /swapfile
Install requirements (it’s possible not all are actually needed, I’ve not tested for that)
apt-get install -y yasm git make g++ build-essential libminiupnpc-dev libboost-all-dev libdb++-dev libgmp-dev libssl-dev dos2unix cmake
Grab the files and install
git clone https://github.com/thbaumbach/primecoin && cd primecoin && mkdir bin && cd bin && cmake .. && make
The name of the program has also changed, so the right command to use to start mining is:
screen ./xolominer -poolip=22.214.171.124 -poolport=1337 -pooluser="YOUR ADDRESS" -poolpassword=PASSWORD -genproclimit=1