ImageMagick本体のインストール。
$ sudo apt-get install imagemagick
ライブラリのインストール。これ重要
$ sudo apt-get install libmagick++-dev
rvmsudoでrmagickをインストール。
$ rvmsudo gem install rmagick [sudo] password for username: Fetching: rmagick-2.13.1.gem (100%) Building native extensions. This could take a while... Successfully installed rmagick-2.13.1 1 gem installed Installing ri documentation for rmagick-2.13.1... Installing RDoc documentation for rmagick-2.13.1...
完了(--)/
なお、bundle install や gem install でははじかれるので注意。
Installing rmagick (2.13.1)
Errno::EACCES: Permission denied - /home/username/.rvm/gems/ruby-1.9.3-head@global/gems/rmagick-2.13.1/README.html
An error occured while installing rmagick (2.13.1), and Bundler cannot continue.
Make sure that `gem install rmagick -v '2.13.1'` succeeds before bundling.
username@pc:~/RAILS_ROOT$ gem install rmagick
ERROR: While executing gem ... (Errno::EACCES)
Permission denied - /home/nikaido/.rvm/gems/ruby-1.9.3-head@global/gems/rmagick-2.13.1/README.html
