I found a similar problem described in: http://groups.google.com/group/sdruby/browse_thread/thread/d3ba3a487714bdb4?pli=1
I installed build-essential ruby-dev 4.2 libruby1.8-dbg and retried 'sudo gem install rub-debug' after this, the gem installed correctly. I suggest that there are missing dependencies on the ruby-gems package. Cheers.... -- rubygems1.8 does not work - apppears misconfigured https://bugs.launchpad.net/bugs/591575 You received this bug notification because you are subscribed to Ubuntu. Status in “libgems-ruby” package in Ubuntu: New Bug description: I installed ruby 4.5, and rubygems1.8 from the Synaptic Package Manager, and tried to do sudo gem install ruby-debug, and am getting error messages that are beyond my capacity to fix. The transcript from the terminal follows: myu...@diglit-desktop:~$ ruby --version ruby 1.8.7 (2010-01-10 patchlevel 249) [i486-linux] myu...@diglit-desktop:~$ sudo gem install ruby-debug [sudo] password for myuser: Building native extensions. This could take a while... ERROR: Error installing ruby-debug: 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 Gem files will remain installed in /var/lib/gems/1.8/gems/linecache-0.43 for inspection. Results logged to /var/lib/gems/1.8/gems/linecache-0.43/ext/gem_make.out myu...@diglit-desktop:~$ ProblemType: Bug DistroRelease: Ubuntu 10.04 Package: rubygems (not installed) ProcVersionSignature: Ubuntu 2.6.32-22.36-generic 2.6.32.11+drm33.2 Uname: Linux 2.6.32-22-generic i686 Architecture: i386 Date: Wed Jun 9 14:15:12 2010 InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release i386 (20100429) ProcEnviron: LANG=en_AU.utf8 SHELL=/bin/bash SourcePackage: libgems-ruby _______________________________________________ Pkg-ruby-extras-maintainers mailing list Pkg-ruby-extras-maintainers@lists.alioth.debian.org http://lists.alioth.debian.org/mailman/listinfo/pkg-ruby-extras-maintainers
