Ruby: Installing rmagick on Ubuntu

Question

Install the packages imagemagick and libmagickwand-dev (or libmagick9-dev). You should then be able to install the Rmagick Gem.

sudo apt-get install imagemagick libmagickwand-dev

If not, you are missing ruby related development packages like build-essential and ruby1.8-dev. If that's the case, a generic "ubuntu install ruby 1.8" query in google should sort you out.

You don't need a lot of the other junk in these answers, just:

sudo apt-get install libmagickwand-dev

On Ubuntu 12.04 libmagick9-dev is gone. graphicsmagick-libmagick-dev-compat should be used instead.

apt-get install graphicsmagick-libmagick-dev-compat

On Ubuntu 15.04, what solved it for me was to remove all previous *magick installations, reinstall required packages and then symlink the config file:

sudo apt-get purge graphicsmagick graphicsmagick-dbg imagemagick-common imagemagick imagemagick-6.q16 libmagickcore-6-headers libmagickwand-dev graphicsmagick-libmagick-dev-compat
sudo apt-get autoremove
sudo apt-get install imagemagick libmagickwand-dev
sudo ln -s /usr/lib/x86_64-linux-gnu/ImageMagick-6.8.9/bin-Q16/Magick-config /usr/bin/Magick-config
gem install rmagick

In Ubuntu 14.04

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Below code is worked for me

sudo apt-get install imagemagick libmagickcore-dev libmagickwand-dev

Then,

gem install rmagick

On Ubuntu 12.0.4.2 sudo apt-get install libmagickwand-dev libmagickcore-dev libmagickcore4-extra libgraphviz-dev libgvc5 worked for me.

graphicsmagick-libmagick-dev-compat installed but didn't include the header files so rmagick wouldn't compile.

Please note, you need to remove graphicsmagick-libmagick-dev-compat before running the command above.