From: Luis Lavena <luislavena@...>
Date: 2010-07-21T20:20:08+09:00
Subject: Re: how to make "gem install rmagick" work?

On Jul 21, 7:39 am, Jian Lin <blueskybre...@gmail.com> wrote:
> I wanted to install rmagick on Win7 but it can't install:
> Is there any way to make it work?
>
>     C:\>gem list -r rmagick
>
>     *** REMOTE GEMS ***
>
>     rmagick (2.13.1)
>     rmagick4j (0.3.7, 0.3.4 java)
>
>     C:\>gem install rmagick
>     Building native extensions.  This could take a while...
>     ERROR:  Error installing rmagick:
>             ERROR: Failed to build gem native extension.
>

RMagick compilation process is quite complicated, worse under Windows.

Please download the zip file that contains both the binary gem and the
correct precise ImageMagick version used to create the gem.

Read here for instructions:

http://rubyforge.org/frs/shownotes.php?release_id=39888

HTH
--
Luis Lavena