1. Method 1: Auto Install GCC with the Ubuntu Repository
The first recommended option to install GCC is to install either the GCC package directly or the build-essential package containing GCC and many other essential development tools such as make, g++, and dpkg-dev.
To begin the installation, use the following command:
sudo apt install gcc
OR
sudo apt install build-essential
Once installed, verify the installation and check the version using the following command:
gcc --version
2. Method2: Install GCC with Ubuntu via Toolchain PPA
2.1 cmake安装
Step1 ，下载cmake
在如下链接https://cmake.org/files/选择指定的版本下载cmake，如选择https://cmake.org/files/v3.29/。
sudo wget https://cmake.org/files/v3.29/cmake-3.29.0.tar.gz
Step2 ，解压
sudo tar -zxvf cmake-3.29.0.tar.gz
Step3 ，安装
cd cmake-3.29.0
sudo ./configure
如果报错Could NOT find OpenSSL, try to set the path to OpenSSL root folder in the system variable OPENSSL_ROOT_DIR (missing: OPENSSL_CRYPTO_LIBRARY OPENSSL_INCLUDE_DIR)
解决方法：sudo apt-get install libssl-dev
Step4 ，编译、安装
sudo make -j8 && sudo make install
2.2. gcc/g++安装
2.2.1 Install g++
Add the Toolchain repository:
sudo add-apt-repository -y ppa:ubuntu-toolchain-r/test
OR
sudo add-apt-repository ppa:ubuntu-toolchain-r/ppa -y
Install g++ 13 by using the following command:
sudo apt install -y g++-13 gcc-13
Now you can verify that the installation finished successfully by checking g++ version:
g++-13 --version
2.2.2 安装多个版本并在版本间切换
You may need to install multiple GCC compiler versions as a developer or specific user. Follow these steps to configure alternative versions of GCC on your Ubuntu system.
First, install the versions of GCC you need. You can install multiple versions of GCC along with G++ using the following command:
sudo apt install gcc-9 g++-9 gcc-10 g++-10 gcc-11 g++-11 g++-12 gcc-12 g++-13 gcc-13
Once you have installed the necessary versions, use the update-alternatives command to configure the priority of each version. The following example command sets the priority split between GCC 9, GCC 10, and the latest GCC 13.
bash
sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-13 100 --slave /usr/bin/g++ g++ /usr/bin/g++-13 --slave /usr/bin/gcov gcov /usr/bin/gcov-13
sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-10 60 --slave /usr/bin/g++ g++ /usr/bin/g++-10 --slave /usr/bin/gcov gcov /usr/bin/gcov-10
sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-9 80 --slave /usr/bin/g++ g++ /usr/bin/g++-9 --slave /usr/bin/gcov gcov /usr/bin/gcov-9The above commands set GCC 13 as the highest priority with a value of 100. However, you can configure the priorities based on your preferences.
To confirm that GCC 13 is the default version on your system, run the following command:
gcc --version
You can reconfigure the default GCC version on your system by using the update-alternatives command. First, use the following command to list the priorities you previously set:
sudo update-alternatives --config gcc
3. Reference
Install g++ 13 on Ubuntu 22.04
How to Install GCC on Ubuntu 24.04, 22.04 or 20.04