Does not build on Raspbian Ruby 1.9.1

[Gadgetoid]

Problems compiling native extensions on Raspbian. Detail currently unknown. Should roll a Raspbian SD and attempt to fix.

Requires Ruby-dev, also? Or fails with /usr/lib/ruby/1.9.1/rubygems/custom_require.rb:36:in `require': cannot load such file -- mkmf

[newLoki]

Yeah, this is a common issue which can be fixed by installing ruby-dev (sudo apt-get install ruby-dev)