Enabling debugger support in ruby-1.9.3-p0 with RVM

Forget what you read here before, and just do the following:

curl -O http://files.rubyforge.vm.bytemark.co.uk/ruby-debug19/linecache19-0.5.13.gem
curl -O http://files.rubyforge.vm.bytemark.co.uk/ruby-debug19/ruby-debug-base19-0.11.26.gem
gem install {linecache19-0.5.13.gem,ruby-debug-base19-0.11.26.gem} \
  -- --with-ruby-include=$rvm_path/src/`rvm current | sed 's/@.*//'`

Or, if you do vendor your gems with bundler, use the following:

curl http://files.rubyforge.vm.bytemark.co.uk/ruby-debug19/linecache19-0.5.13.gem \
  > vendor/cache/linecache19-0.5.13.gem
curl http://files.rubyforge.vm.bytemark.co.uk/ruby-debug19/ruby-debug-base19-0.11.26.gem \
  > vendor/cache/ruby-debug-base19-0.11.26.gem
bundle config build.ruby-debug-base19 \
  --with-ruby-include=$rvm_path/src/`rvm current | sed 's/@.*//'`

You can also find this as a gist.