How to Install gcc on CentOS 6.2

In web servers and website administration, the ability to install and configure software is a fundamental skill. One such software is the GNU Compiler Collection (GCC), a compiler system produced by the GNU Project that supports various programming languages. This comprehensive guide will walk you through the process of installing GCC on CentOS 6.2.

The GCC is designed to support multiple front-ends and back-ends by translating first into Register Transfer Language and from there into assembly code for the target architecture.

This guide assumes that you have installed the minimal installation type CentOS 6.2 and have set up your own local yum repository. However, if you have a direct internet connection to your server, you can use the internet CentOS yum repository instead.

Setting Up Your Local Yum Repository

Before we dive into the installation of GCC, it’s important to ensure that your local yum repository is properly set up. If you need guidance on how to set up a local yum repository from a CD-ROM/DVD-ROM image on CentOS 6.2, you can refer to this tutorial.

Installing GCC on CentOS 6.2

Once your local yum repository is ready, you can proceed with the installation of the GCC package. This is done by running a simple yum command:

[root@centos6 ~]# yum install gcc

Upon running this command, the system will load plugins, resolve dependencies, and prepare to install the gcc package. You will be prompted to confirm the installation. Once you confirm, the system will download the necessary packages and complete the installation process.

[root@centos6 ~]# yum install gcc
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
 * base:
 * extras:
 * updates:
Setting up Install Process
Resolving Dependencies
--> Running transaction check
---> Package gcc.i686 0:4.4.6-3.el6 will be installed
--> Finished Dependency Resolution

Dependencies Resolved

 Package       Arch           Version                  Repository                      Size
 gcc           i686           4.4.6-3.el6              CentOS6.2-Repository           8.2 M

Transaction Summary
Install       1 Package(s)

Total download size: 8.2 M
Installed size: 15 M
Is this ok [y/N]: y
Downloading Packages:
Running rpm_check_debug
Running Transaction Test
Transaction Test Succeeded
Running Transaction
  Installing : gcc-4.4.6-3.el6.i686                                                     1/1

  gcc.i686 0:4.4.6-3.el6


Understanding the Installation Process

During the installation process, you will encounter several stages. Here’s a brief overview of what each stage entails:

  • Loading plugins: This is where the system loads necessary plugins to facilitate the installation process.
  • Resolving Dependencies: The system checks for and resolves any dependencies required by the gcc package.
  • Running Transaction Check: The system checks the transaction to ensure everything is in order before proceeding with the installation.
  • Running Transaction Test: A test run of the transaction is performed to ensure that the installation will proceed without issues.
  • Running Transaction: The actual installation process begins.
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Upon successful installation, you will see a completion message indicating that the gcc package has been installed.


Installing GCC on CentOS 6.2 is a straightforward process that involves setting up your local yum repository and running a simple yum command. This guide has provided a step-by-step walkthrough of the process, along with an explanation of the various stages of the installation process. Whether you’re running a dedicated server, a VPS server, or utilizing cloud hosting, understanding how to install and configure software like GCC is a crucial skill for any webmaster or website administrator.

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With this knowledge, you’re well-equipped to maintain and optimize your server for the best performance.

FAQ Section

  1. What is GCC and why is it important?

    GCC, or the GNU Compiler Collection, is a compiler system that supports various programming languages. It’s crucial for web server administration as it allows for the compilation of source code into executable programs, enabling the running of various applications and services on the server.

  2. What is CentOS and why is it used?

    CentOS is a free and open-source operating system that is based on the Linux kernel. It is widely used in web servers due to its robustness, stability, and extensive community support. It’s also highly compatible with many software types, making it a versatile choice for various server applications.

  3. What is a yum repository?

    A yum repository is a software repository for RPM packages that CentOS, Fedora, and similar operating systems use. It allows users to download and install software from the repository using the yum command-line tool, simplifying software management.

  4. What does the ‘yum install gcc’ command do?

    The ‘yum install gcc’ command instructs the system to download and install the gcc package from the yum repository. This command is used to install the GNU Compiler Collection (GCC) on the server, which is essential for compiling various programming languages.

  5. What happens if the GCC installation fails?

    If the GCC installation fails, the system will typically provide an error message indicating the cause of the failure. This could be due to issues like network problems, missing dependencies, or insufficient disk space. Depending on the error, you may need to troubleshoot the issue by checking your network connection, ensuring you have enough disk space, or manually installing any missing dependencies.


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