Update using terminal:

1. Run the command prompt/terminal (cmd or sh).

2. Update the package list:

   mingw-get update
   

3. After updating the package list, run:

   mingw-get upgrade
   

When the command finishes running, all of your packages will be upgraded.

---

Update using the GUI version:

If you aren't used to the terminal, there is also a GUI version of MinGW called "MinGW Installation Manager", which is normally located at:

C:\MinGW\libexec\mingw-get\guimain.exe

1. When the GUI is open, tap Installation -> Update Catalogue. This will update the package list.

2. After that, tap Installation -> Mark All Upgrades. This will select all of the packages which can be upgraded.

3. Finally, tap Installation -> Apply Changes to apply the upgrades.

This is a common pattern in linux. When there are multiple versions of the same program installed, though the executables are all present in the /usr/bin/ directory, only one of them is "visible" as that program. For example, if you install gcc-9 and gcc-10, both executables are present as /usr/bin/gcc-9 and /usr/bin/gcc-10 but only one of them is visible as gcc. This happens by symlinking a preferred version to the same directory as /usr/bin/gcc. In ubuntu 20.04, the preferred version is gcc-9 and so, gcc-9 is symlinked as gcc.

You can check this by running the following command.

$ which gcc | xargs file

The output will be

/usr/bin/gcc: symbolic link to gcc-9

There are a few things you can do to use gcc-10 as your c compiler.

1. Directly call the gcc-10 executable. Instead of using gcc <code.c>, call gcc-10 <code.c>.
2. You can manually symlink gcc-10 as the preferred gcc. Assuming you did not modify the system paths, the following command can be used.

# ln -s /usr/bin/gcc-10 /usr/local/bin/gcc

This works because, by default, the executables in /usr/local/bin/ take precedence over /usr/bin/.

3. If you are using bash, you can create an alias for gcc as gcc-10. Add the following line to your .bashrc.

alias gcc="gcc-10"

Remember to relaunch bash or source ~/.bashrc.

4. Using update-alternatives (Thanks to @ted-lyngmo for pointing it out). Debian based distributions supply a separate program, that can make symlinking easier / more functional. Read more using man update-alternatives. To use gcc-10 as the preferred gcc, use the following command.

# update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-10 60

The above command says, /usr/bin/gcc is the link needed and the name is gcc, the target executable is /usr/bin/gcc-10 and it has a priority of 60.

This links gcc to /etc/alternatives/gcc, which itself is a symlink to /usr/bin/gcc-10. If a higher priority program is added to update-alternatives, /etc/alternatives/gcc points to the higher priority program.

If you don't have any specific reason, I would also recommend to upgrade to a newer ubuntu version, so that the default gcc is a newer one.

I read on the gcc website that version 9.4 is more up-to-date than some 10.x versions.

With newer gcc versions, new features are added. Support for newer c/c++ standards are also added. Eg. You can read the changes for gcc-10 here. But people still need gcc-9 because some programs only build with gcc-9. So, GNU maintains gcc-9 (and much older versions) for a long time. Bugs are fixed, and newer releases are made. This can happen after the release of a newer gcc version. So, it is very much possible that a version of gcc-9 is newer than a version of gcc-10.

You can install GCC 6 by adding the ubuntu-toolchain-r/test PPA. To do so, run the following commands:

sudo add-apt-repository ppa:ubuntu-toolchain-r/test
sudo apt update
sudo apt install gcc-6

You can verify that gcc-6 is installed by running gcc-6 --version and the output should say gcc-6 (Ubuntu 6.1.1-2ubuntu12~16.04) 6.1.1 20160510.

As suggested by Mohamed Slama, if you want to further change the default GCC and G++ to the latest versions, install g++-6 with

sudo apt install g++-6

and then run

sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-6 60 --slave /usr/bin/g++ g++ /usr/bin/g++-6    

I've confirmed that you can upgrade gcc from the default version 4.8 on centOS 7.

First, we need to install "Software Collections" in order to access some of the community packages including gcc v7

• sudo yum install -y centos-release-scl

Next, we want to install a developer toolset. Depending on your needs, you may want a different devtoolset. Here I'm targeting 7:

• sudo yum install -y devtoolset-7

Finally, you'll want to change over to gcc 7 as your default, launch a new shell session with the scl tool:

• scl enable devtoolset-7 bash

Hello. I think you can use gcc13 by installing gcc itself from source. I confirmed that I can install it by running the following command in my environment. Please note that the installation will take some time. If you want to shorten the time, add "--disable-bootstrap" to the "./configure" command option to reduce the number of builds. ``` dnf install gcc g++ -y wget https://ftp.tsukuba.wide.ad.jp/software/gcc/releases/gcc-13.2.0/gcc-13.2.0.tar.gz tar xzf gcc-13.2.0.tar.gz cd gcc-13.2.0 ./contrib/download_prerequisites mkdir build cd build ../configure --enable-languages=c,c++ --prefix=/usr/local --disable-multilib --disable-bootstrap make make install reboot gcc -v g++ -v ```