I have installed gcc-12 and g++-12 on my Ubuntu 22.04 system. How do I make them the default versions used when I call gcc/g++ in terminal?

I have installed gcc-12 and g++-12 on my Ubuntu 22.04 system.

How do I make them the default versions used when I call gcc/g++ in terminal?

First you need to remove the current gcc and g++ symbolic links:

sudo rm /usr/bin/gcc
sudo rm /usr/bin/g++

Then, create a new symbolic link for gcc and g++ version 12:

sudo ln -s /usr/bin/gcc-12 /usr/bin/gcc
sudo ln -s /usr/bin/g++-12 /usr/bin/g++

To make sure that everything has worked fine check the gcc and g++ version:

gcc --version
g++ --version

You should get 12.1.0

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