DISCLAIMER

-This tutorial is based in gcc12 installation, its the same for every installation just do the same steps but CHANGE THE 12 IN THE COMMANDS BELOW

The first step is installing homebrew

homebrew installation

Install homebrew here Paste the command in your terminal (it requires Xcode installation)

Then with the search command you can see which version of gcc you can install brew search gcc Choose your desired version and install it with: brew install gcc@version

Add the version after the @

verify the installation

Mac m1 users

The following command will gill you the version of your gcc which you will use to check, if g++ is installed correctly

ls /opt/homebrew/Cellar/gcc@12

Then you rewrite the same command but adding the version that the command just gave you and adding the g++ line

ls /opt/homebrew/Cellar/gcc@12/12.4.0/bin/g++-12

Disclaimer: Replace 12 with the version you installed and the 12.4.0 with the version the command ls /opt/homebrew/Cellar/gcc@yourversion gave you

If that doesn't throw you any errors then brew prefix gcc@12

For intel chips

It's almost the same process but the location of the homebrew downloads is in

/usr/local

Adding to zshrc

Add the CC and CXX flags for it to be able to run, I will use vim but you can use nano or any text editor vim ~/.zshrc

Once you are in your zshrc paste the following commands export CC="$(brew --prefix gcc@12)/bin/gcc-12"

and

export CXX="$(brew --prefix gcc@12)/bin/g++-12"

If you did not install version 12 always change the 12 in every command to the version you installed

Running the files

In order for it to run

$CXX main.cpp

and it should look like this

This is the only way I found to do this and be able to run bits/stdc++.h or other headers without a problem