Using Rake

Rake can automate much of the work of building a gem.
- Use Rake’s FileList to gather files in the package.
- Use Rake’s built in tasks

if ! defined?(Gem)
  puts "Package Target requires RubyGEMs"
else
  spec = Gem::Specification.new do |s|
    # [... details elided ...]
  end
  Rake::GemPackageTask.new(spec) do |t|
    t.need_tar = true
    t.need_zip = true
  end
end