From: Luis Lavena <luislavena@...>
Date: 2010-07-22T06:50:48+09:00
Subject: Re: how to make "gem install rmagick" work?

On Jul 21, 12:50 pm, Guillaume Bloss <ely...@elysah.fr> wrote:
> I tried to install the rmagick_win32.zip but actually it does not works
> with ruby 1.9.1 ...
>

It clearly states that the gem is Ruby 1.8, not 1.9.1

> I will try to compile it to get a working version with ruby1.9.1, but it
> seems to be a very long work since I have to configure all depending
> libraries by myself ... and also I cant be sure it will works, but well
> it's a challenge, I work with windows and hate use old slow version ...
>

Developer need to provide binaries for Ruby 1.9 since they link to
different Ruby runtime libraries.

Try first asking about it in the RubyForge page

> I think I can try to download all sources of all required libraries and
> try to compile it with mingw, following the linux instruction, but under
> windows.

I believe you can build and link with binaries of ImageMagick as long
they provide header and libs needed.

By this error:

"Invalid drive specification.
    Unable to get ImageMagick version
    *** extconf.rb failed *** "

It is clear that is trying to look for an ImageMagick executable to
get the version, investigate inside extconf.rb to see what is doing.

I can't help you more on this since I'm not familiar with ImageMagick
build process or internals.

Trying to fix gems to compile cleanly is a challenging task. Feel free
to jump for help at RubyInstaller project group:

http://groups.google.com/group/rubyinstaller

--
Luis Lavena