Error with redmine installation script

Hello,

I tried to install redmine with installation script and it failed with the following error:

Now installing redmine version 0.8.3 ..

Mongrel GEM install failed :

Bulk updating Gem source index for: http://gems.rubyforge.org
Select which gem to install for your platform (x86_64-linux)
1. mongrel 1.1.5 (ruby)
2. mongrel 1.1.5 (x86-mingw32)
3. mongrel 1.1.5 (x86-mswin32-60)
4. mongrel 1.1.5 (java)
5. Skip this gem
6. Cancel installation
> 1
Building native extensions. This could take a while...
ERROR: While executing gem ... (Gem::Installer::ExtensionBuildError)
ERROR: Failed to build gem native extension.

ruby extconf.rb install mongrel --include-dependencies
extconf.rb:8:in `require': no such file to load -- mkmf (LoadError)
from extconf.rb:8

Gem files will remain installed in /var/lib/gems/1.8/gems/fastthread-1.0.7 for inspection.
Results logged to /var/lib/gems/1.8/gems/fastthread-1.0.7/ext/fastthread/gem_make.out

.. failed! See the error message above for the reason why.

Bests regards, Guy

Status: 
Closed (fixed)

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