# RMagick 2.11.0 install fails with ImageMagick 6.5.4

**URL:** <https://www.ruby-forum.com/t/rmagick-2-11-0-install-fails-with-imagemagick-6-5-4/174838>\
**Category:** Ruby\
**Created:** [September 2, 2009, 10:21pm UTC](https://www.ruby-forum.com/t/rmagick-2-11-0-install-fails-with-imagemagick-6-5-4/174838 "2009-09-02T22:21:44Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![pharrington](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/p/e95f7d/32.png) [@pharrington](https://www.ruby-forum.com/u/pharrington)\
**Post date:** [September 2, 2009, 10:21pm UTC](https://www.ruby-forum.com/t/rmagick-2-11-0-install-fails-with-imagemagick-6-5-4/174838/1 "2009-09-02T22:21:44Z")

</div>

Trying to install RMagick 2.11.0 was giving me the following error:

Updating rmagick  
Building native extensions. This could take a while…  
ERROR: While executing gem … (Gem::Installer::ExtensionBuildError)  
ERROR: Failed to build gem native extension.

/usr/bin/ruby1.8 extconf.rb update  
checking for Ruby version \>= 1.8.5… yes  
checking for cc… yes  
checking for Magick-config… yes  
checking for ImageMagick version \>= 6.3.5… yes  
checking for HDRI disabled version of ImageMagick… yes  
checking for stdint.h… yes  
checking for sys/types.h… yes  
checking for wand/MagickWand.h… yes  
checking for InitializeMagick() in -lMagickCore… no  
checking for InitializeMagick() in -lMagick… no  
Can’t install RMagick 2.11.0. Can’t find the ImageMagick library or  
one of the dependent libraries. Check the mkmf.log file for more  
detailed information.

\*\*\* extconf.rb failed \*\*\*  
Could not create Makefile due to some reason, probably lack of  
necessary libraries and/or headers. Check the mkmf.log file for more  
details. You may need configuration options.

Provided configuration options:  
–with-opt-dir  
–without-opt-dir  
–with-opt-include  
–without-opt-include=${opt-dir}/include  
–with-opt-lib  
–without-opt-lib=${opt-dir}/lib  
–with-make-prog  
–without-make-prog  
–srcdir=.  
–curdir  
–ruby=/usr/bin/ruby1.8  
–with-MagickCorelib  
–without-MagickCorelib  
–with-Magicklib  
–without-Magicklib

Gem files will remain installed in /var/lib/gems/1.8/gems/  
rmagick-2.11.0 for inspection.  
Results logged to /var/lib/gems/1.8/gems/rmagick-2.11.0/ext/RMagick/  
gem\_make.out

convert -version was:

Version: ImageMagick 6.5.4-2 2009-07-04 Q8 OpenMP

> **[ImageMagick](https://imagemagick.org/index.php)**
>
> Create, Edit, Compose, or Convert Digital Images

Copyright: Copyright (C) 1999-2009 ImageMagick Studio LLC

mkmf.log: [http://pastebin.com/m776a3e36](http://pastebin.com/m776a3e36)

Installing ImageMagick 6.5.5 fixes all this though. Was there a typo  
in the required ImageMagick version for the build script?

---

<div class="post-metadata">

**Author:** ![pharrington](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/p/e95f7d/32.png) [@pharrington](https://www.ruby-forum.com/u/pharrington)\
**Post date:** [September 2, 2009, 10:56pm UTC](https://www.ruby-forum.com/t/rmagick-2-11-0-install-fails-with-imagemagick-6-5-4/174838/2 "2009-09-02T22:56:52Z")

</div>

pharrington wrote:

> checking for Magick-config… yes
> 
> ```
> --with-opt-lib
> 
> ```
> 
> Copyright: Copyright (C) 1999-2009 ImageMagick Studio LLC
> 
> mkmf.log: [http://pastebin.com/m776a3e36](http://pastebin.com/m776a3e36)
> 
> Installing ImageMagick 6.5.5 fixes all this though. Was there a typo  
> in the required ImageMagick version for the build script?

RMagick 2 works with ImageMagick 6.3.0 and later.

Line 98 in mkmf.log says “/usr/bin/ld: cannot find -lltdl”. That is, ld  
failed because ImageMagick says it needs libltdl.so but that library  
couldn’t be found. Googling “imagemagick libltdl” uncovers a number of  
questions about this library and ImageMagick. I’m guessing that some  
change to ImageMagick 6.5.5 configuration resolved the problem.