How to install latest gcc on Ubuntu LTS (12.04, 14.04, 16.04)

how-to-install-latest-gcc-on-ubuntu-lts.txt

These commands are based on a askubuntu answer http://askubuntu.com/a/581497
To install gcc-6 (gcc-6.1.1), I had to do more stuff as shown below.
USE THOSE COMMANDS AT YOUR OWN RISK. I SHALL NOT BE RESPONSIBLE FOR ANYTHING.
ABSOLUTELY NO WARRANTY.

If you are still reading let's carry on with the code.

sudo apt-get update && \
sudo apt-get install build-essential software-properties-common -y && \
sudo add-apt-repository ppa:ubuntu-toolchain-r/test -y && \
sudo apt-get update && \
sudo apt-get install gcc-snapshot -y && \
sudo apt-get update && \
sudo apt-get install gcc-6 g++-6 -y && \
sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-6 60 --slave /usr/bin/g++ g++ /usr/bin/g++-6 && \
sudo apt-get install gcc-4.8 g++-4.8 -y && \
sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-4.8 60 --slave /usr/bin/g++ g++ /usr/bin/g++-4.8;

When completed, you must change to the gcc you want to work with by default. Type in your terminal:
sudo update-alternatives --config gcc

To verify if it worked. Just type in your terminal
gcc -v

If everything went fine you should see gcc 6.1.1  by the time I am writing this gist

Happy coding!

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Thank you! You saved me!

Thank you!
gcc version 9.4.0

Thanks @peterhanneman

GCC 7.1 on Ubuntu 14.04 & 16.04:

sudo apt-get update -y && \
sudo apt-get upgrade -y && \
sudo apt-get dist-upgrade -y && \
sudo apt-get install build-essential software-properties-common -y && \
sudo add-apt-repository ppa:ubuntu-toolchain-r/test -y && \
sudo apt-get update -y && \
sudo apt-get install gcc-7 g++-7 -y && \
sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-7 60 --slave /usr/bin/g++ g++ /usr/bin/g++-7 && \
sudo update-alternatives --config gcc

I got gcc/g++ version 11.1.0 with similar procedure on 18.04 . Thank you!

Hi All,
I am trying to install GCC12 on ubuntu 20.04.6 LTS (Focal Fossa) os but not able to find GCC12. tried to use the above command but with gcc-12.
can anybody provide any suggestions?

Hi All, I am trying to install GCC12 on ubuntu 20.04.6 LTS (Focal Fossa) os but not able to find GCC12. tried to use the above command but with gcc-12. can anybody provide any suggestions?

I actually just tried this and it appears that gcc12 and 13 are only available as a package on Ubuntu 22.04 and later. If you want it on earlier versions you'll have to build it from source. 😭

Thanks @jasonbeach for your inputs..

thank you!