Was having difficulty compiling johnny-five on Rpi, the bellow seems to have fixed it though by declaring the dependency versions explicitly. When compiling node-gyp on OSX, make sure to have xcode + command line tools installed.

package.json

{
  "name" : "theProject"
	,"preferGlobal": true
	, "author":"Relay Studio"
	, "client":"theClient"
	, "version": "0.0.1"
	, "private": true
	, "dependencies": {
		"express": "3.0"
		, "jade" : ">= 0.0.1"
		, "serialport" : "1.0.6"
		, "node-gyp" : "0.6.1"
		, "johnny-five": "0.5.14"
	} , "engines" : { 
		"node" : "0.8.11"
	 }
}