How to install RMagick on a Mac This page describes a method for installing RMagick, ImageMagick or GraphicsMagick, and the delegate libraries used by ImageMagick and GraphicsMagick. You only need to install one of ImageMagick or GraphicsMagick. The procedure is the same for either library. Throughout the remainder of this document I will use the word ×Magick to refer to either of these two libraries. I developed this procedure using a Powerbook G4 and Mac OS X 10.3.8, and I've tested it with Tiger. If you are using a different version of Mac OS X some of the details may be different. In particular these instructions assume you are using bash as your shell.