Install libffi-devel

README.md

The problem

While I was configuring Ruby on Rails in a Red Hat (CentOS) with RVM I found a problem with the library libffi-devel because the package wasn't available via yum install, after search for a couple of days I found this solution.

Add rpmforge as a repository

1. Create a repo file in /etc/yum.repos.d/rpmforge.repo, you need to be an admin
2. Copy the following text.

#Name: RPMforge RPM Repository for Red Hat Enterprise 5 - dag
   #URL: http://rpmforge.net/
   [rpmforge]
    name = Red Hat Enterprise $releasever - RPMforge.net - dag
    #baseurl = http://apt.sw.be/redhat/el5/en/$basearch/dag
    mirrorlist = http://apt.sw.be/redhat/el5/en/mirrors-rpmforge
    #mirrorlist = file:///etc/yum.repos.d/mirrors-rpmforge
    enabled = 1
    protect = 0
    gpgkey = file:///etc/pki/rpm-gpg/RPM-GPG-KEY-rpmforge-dag
    gpgcheck = 1

3. Download the the rpmforge gpg key

    $ sudo rpm --import http://apt.sw.be/RPM-GPG-KEY.dag.txt
   

4. Install the package via yum

    $ sudo yum install libffi-devel