RVM – Multilib version error installing libffi-devel on Centos 6.6 danroo RVM – Multilib version error installing libffi-devel on Centos 6.6 Helpful? Please support me on Patreon: With thanks … . Concluzion: RVM – Multilib version error installing libffi-devel on Centos 6.6 – answer,centos,installation,problem,rvm source