• gcc >= 4.1
• ruby >= 1.8

$ gem install msgpack

You can get latest source code using git.

$ git clone git://git.sourceforge.jp/gitroot/msgpack/msgpack.git
$ cd msgpack

$ cd ruby
$ ruby extconf.rb
$ make
$ sudo make install

require 'msgpack'
 
serialized = [1, -1, true, false, nil, {"key" => "value"}].to_msgpack
p MessagePack.unpack(serialized)