broken

-----> Installing gem rmagick 2.12.2 from http://rubygems.org
       Building native extensions.  This could take a while...
       ERROR:  Error installing rmagick:
       	ERROR: Failed to build gem native extension.
       
       /usr/local/bin/ruby extconf.rb
       checking for Ruby version >= 1.8.5... yes
       checking for gcc... yes
       checking for Magick-config... yes
       checking for ImageMagick version >= 6.3.5... no
       Can't install RMagick 2.12.2. You must have ImageMagick 6.3.5 or later.
       
       *** extconf.rb failed ***
       Could not create Makefile due to some reason, probably lack of
       necessary libraries and/or headers.  Check the mkmf.log file for more
       details.  You may need configuration options.
       
       Provided configuration options:
       	--with-opt-dir
       	--without-opt-dir
       	--with-opt-include
       	--without-opt-include=${opt-dir}/include
       	--with-opt-lib
       	--without-opt-lib=${opt-dir}/lib
       	--with-make-prog
       	--without-make-prog
       	--srcdir=.
       	--curdir
       	--ruby=/usr/local/bin/ruby
       
       
       Gem files will remain installed in /code/repos/44189/gems_build/gems/rmagick-2.12.2 for inspection.
       Results logged to /code/repos/44189/gems_build/gems/rmagick-2.12.2/ext/RMagick/gem_make.out