ruby-mkrf 0.2.3+dfsg-3 (i386 binary) in ubuntu quantal

 The mkrf Ruby library generates Rakefilesto build extensions to Ruby written
 in C. Rakefiles are Ruby analogs of Makefiles, describing tasks for the Rake
 utility (Ruby make).
 .
 This library is an alternative to the mkmf Ruby library, provided in the
 ruby-*-dev packages, the main difference being that mkmf generates Makefiles
 for the make utility instead.