- sudo vi /etc/apt/sources.list
Add following lines:
deb http://dk.archive.ubuntu.com/ubuntu/ xenial main
deb http://dk.archive.ubuntu.com/ubuntu/ xenial universe - sudo apt update
- sudo apt install gcc-4.7
- sudo apt install g++-4.7
- sudo update-alternatives –install /usr/bin/gcc gcc /usr/bin/gcc-4.7 40 –slave /usr/bin/g++ g++ /usr/bin/g++-4.7
- sudo update-alternatives –config gcc (run this if you have multiple gcc versions)