Installing RMagick Gem

Question

I just wanted to gem install rmagick

and got this:

Building native extensions.  This could take a while...
ERROR:  Error installing rmagick:
    ERROR: Failed to build gem native extension.

/usr/bin/ruby1.8 extconf.rb
extconf.rb:1:in `require': no such file to load -- mkmf (LoadError)
    from extconf.rb:1

ImageMagick and libmagickwand-dev is already installed.

Using Ubuntu Linux.

Any help?

Yours, Joern.

score 18 · Accepted Answer · edited Jul 03 '19 at 08:53

18

use rvm to install ruby (preferred) or use apt-get install ruby ruby-dev

aptitude install build-essential imagemagick libmagickcore-dev libmagickwand-dev
gem install rmagick

--Edit 1--

sudo apt-get install ruby-dev

You will also need ruby-dev (or ruby-full) for successfully compiling the RMagick before gem install.

edited Jul 03 '19 at 08:53

You Nguyen

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answered Feb 04 '11 at 14:58

c2h2

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What about ruby-dev? installed? – c2h2 Feb 04 '11 at 15:59
it was ruby-dev, if you post this separately as an answer I will flag this as the right answer. – Joern Akkermann Feb 05 '11 at 19:33

Jigar Bhatt · Answer 2 · 2014-07-14T08:38:17.987

1

sudo apt-get install imagemagick libmagickwand-dev

gem install rmagick

or

in gem file

gem 'rmagick'

then run

bundle install

edited Jul 14 '14 at 08:38

answered Jul 14 '14 at 08:15

Jigar Bhatt

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This isn't going to help. The OP says those packages are already installed, and is running that command. And anyway, an answer was already accepted **three and a half years ago**. – nobody Jul 21 '14 at 13:25
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for some reason, when I added gem 'rmagick' to my gemfile it removed the error could not load rmagic when I start rails, so for that reason, you got my upvote – saadlulu May 19 '19 at 19:37

Installing RMagick Gem

2 Answers2