$ gem install rmagick -v 2.2.2
Building native extensions.  This could take a while...
ERROR:  Error installing rmagick:
    ERROR: Failed to build gem native extension.

/home/max/.rvm/rubies/ruby-1.8.6-p420/bin/ruby extconf.rb
checking for Ruby version >= 1.8.2... yes
checking for Magick-config... yes
checking for ImageMagick version >= 6.3.0... yes
checking for HDRI disabled version of ImageMagick... yes
checking for stdint.h... yes
checking for sys/types.h... yes
checking for magick/MagickCore.h... yes
checking for InitializeMagick() in -lMagick... no
checking for InitializeMagick() in -lMagickCore... no
Can't install RMagick 2.2.2. Can't find libMagick or one of the dependent libraries. Check the mkmf.log file for more detailed information.


Gem files will remain installed in /home/max/.rvm/gems/ruby-1.8.6-p420@elearning-resource/gems/rmagick-2.2.2 for inspection.
Results logged to /home/max/.rvm/gems/ruby-1.8.6-p420@elearning-resource/gems/rmagick-2.2.2/ext/RMagick/gem_make.ou