Installing new Ruby versions on OS X 10.10 Yosemite with rbenvEditCreated 2014-10-20, updated 2017-10-14On updating to Yosemite I found that rbenv, which I installed via Homebrew, would only allow me to add new versions if I prefixed the rbenv install command with CC=clang; eg: $ CC=clang rbenv install 2.1.3 rubyclangmacosrbenvyosemitewiki