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## How to upgrade GCC version in CentOS 8.3 This guide outlines the steps to upgrade the GCC version in CentOS 8.3 to a specific version. **Prerequisites:** * CentOS 8.3 * GCC version greater than 8.x.x **Steps:** 1. **Edit the yum repository configuration:** * Open the file `/etc/yum.repos.d/Centos-8.repo` * Modify the `base` section with the following content: ``` name=CentOS-$releasever - Base - mirrors.aliyun.comfailovermethod=prioritybaseurl=http://mirrors.aliyun.com/centos/$releasever/BaseOS/$basearch/os/gpgcheck=1enabled=1gpgkey=http://mirrors.aliyun.com/centos/RPM-GPG-KEY-CentOS-Official ``` **Explanation:** * `name`: specifies the repository name * `releasever`: the CentOS release version * `Base`: specifies the base package repository * `mirrors.aliyun.comfailovermethod`: specifies the mirror method for downloading packages * `basearch`: specifies the package architecture (e.g., i686 for 64-bit) 2. **Install the desired GCC version:** * Use the `yum install` command with the following syntax: ``` yum install gcc-toolset-XX ``` **Example:** To install GCC 11.x.x: ``` yum install gcc-toolset-11 ``` 3. **Activate the new GCC version:** * Once the installation is complete, activate the `gcc-toolset-10` environment variable: ``` 1scl enable gcc-toolset-10 bash ``` 4. **Verify the new version:** * Check the GCC version using the `gcc --version` command. **Note:** * This guide provides a basic overview. Ensure you follow the specific installation instructions for your chosen GCC version. * The `gcc-toolset-XX` package will automatically update the original `gcc` package to the specified version. * This method allows you to switch between different GCC versions without affecting the original installation.

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