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.
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Create a repo file in /etc/yum.repos.d/rpmforge.repo, you need to be an admin
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Copy the follow text.
#Name: RPMforge RPM Repository for Red Hat Enterprise 5 - dag