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How to Install Git 1.9.0 on CentOS 6.4 (Compiling from Source) March 24, 2014

Posted by Tournas Dimitrios in Uncategorized.

CentOS_logoGit is an open source, distributed version control system developed by Linus Torvalds , the creator of the Linux kernel  . Git allows a team of people to work together, all using a copy of files from a central repository , and when they have made their own contribution on the code , committing the changes back to the central repository . This helps the team cope with the confusion that tends to happen when multiple people are editing the same files . A characteristic example where Git is used for , is the Linux kernel , with 3500 contributors and 15 million lines of code . Although Git is an excellent tool for managing large , complex projects with tens or even hundreds contributors , it can also be used on small projects with one developer or a small team . This flexibility makes it a great choice for implementing version and source control for software projects of any size .
There are countless  Git client tools on the market  , GUI or terminal based , commercial or free . Without doubt , the most adopted client tool for Git is  terminal based (which happen to be named “git”) . Two reasons that made this tool the primary choice by the majority of the software development community  are flexibility and cross-platform compatibility . Software developers that use the Windows platform are lucky here , they just download the latest version of the git-client and run the installation script (an “.exe” file) . In contrast , software developers that have chosen a *nix like platform for their development are “trapped” to use a version of  git that their official repository provides . And usually , the officially supported repositories linger to adopt the latest version of the tools they support . That might sound unimportant at first , and usually it is  . But there are cases where a newer version of a “package” has a feature that we really need . The official supported repository of  CentOs 6.4 provides a “git” version that is quite a bit outdated .While many developers use only git’s basic functionality  and don’t care about the officially provided version , others though , have the need to use all available features that this tool provides  .

Probably you could compile even newer version of git from the source . However, the purpose of this article is to show how to install the latest stable version of git available in the repositories . We won’t need to remove the officially supported git client from our machine , as both versions can coexist on the same box and used interchangeably . To compile the source code (which won’t take more than five minutes) , we must have the following tools pre-installed on our machine : lib-curl-devel , expat-devel , openssl-devel , zlib-devel and gcc . Here are the steps to follow :

  • open a terminal
  • yum list installed |egrep -wi ‘libcurl-devel|expat-devel|openssl-devel|zlib-devel|gcc’ #verify that the required tools are installed
  • cd /tmp
  • mkdir  git ; cd git
  • wget https://www.kernel.org/pub/software/scm/git/git-1.9.0.tar.gz

  • tar xzfv git-1.9.0.tar.gz
  • cd git-1.9.0/
  • sudo make prefix=/usr/local all
  • sudo make prefix=/usr/local install
  • cd ../.. ; rm -fR git
  • # now restart your terminal
  • which git  # /usr/local/bin/git
  • git  –version #git version 1.9.0
  • /usr/bin/git  –version  #git version 1.7.1

Both versions are now installed on our machine . The compiled version is installed on /usr/local/bin directory  and the version of the officially supported repository was installed on /usr/bin directory . Because /usr/local/bin has precedence in terminal’s $PATH variable , this version of git will be used as default . We can “force” the terminal to use  the git version installed by our officially supported repository by explicitly calling the tool (/usr/bin/git)  .  The steps followed on my terminal while compiling/installing git were recorded and can be viewed on showterm.io .
Happy coding , keep yourself healthy and don’t hesitate to drop a message on the comment section below .



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