To install gcc and make on Snappy you will need to install wget, there is a guide on that here: https://lasse-it.dk/2015/10/how-to-installing-wget-on-ubuntu-snappy-core/
Read more How to: Installing make and gcc on Ubuntu Snappy core
How to: Installing wget on Ubuntu Snappy Core
I installed Ubuntu Snappy Core, on my new Raspberry PI 2, then i wanted to install my SMART home software on it, but i discovered there is no wget command, and you can’t do “apt-get install wget” or “snappy install wget”, I found out you could use python and dpkg instead.