Getting the rmagick gem to build on Linux Mint 12 with RVM
I'm using RVM on Linux Mint 12 to run a Spree Commerce development server.
I had previously gotten it working on another Mint box, but I forgot the secret sauce to get the rmagick gem, a dependency of Spree, to build on the machine.
You have to install the libmagick9-dev library with the command "sudo apt-get install libmagick9-dev". Otherwise you just get an error about not being able to find "Magick-config".