I have a driver supplied as source cod (.c) cannot install ‘build-essentials’

Found this question and answer “How do I install a driver provided as source code?”. When I followed the instruction: “sudo apt-get install build-essentials” got the response “E: Unable to locate package build-essentials”.

I’m running as root in armbian 16.04 which has all upgrades (except to 18.) and updates compiled for a H2 CPU on an Orange PI Zer0+

What can I do now? Peter.