Error installing iron-cli on Mac OS X 10.7


Im trying to install the iron-cli package with:

$ npm install -g iron-meteor

But I get this error message:

> fibers@1.0.7 install /Users/jarimado/.npm/lib/node_modules/iron-meteor/node_modules/fibers
> node build.js || nodejs build.js

  CXX(target) Release/
cc1plus: error: unrecognized command line option "-std=gnu++0x"
make: *** [Release/] Error 1
gyp ERR! build error 
gyp ERR! stack Error: `make` failed with exit code: 2
gyp ERR! stack     at ChildProcess.onExit (/usr/local/lib/node_modules/npm/node_modules/node-gyp/lib/build.js:270:23)
gyp ERR! stack     at emitTwo (events.js:87:13)
gyp ERR! stack     at ChildProcess.emit (events.js:172:7)
gyp ERR! stack     at Process.ChildProcess._handle.onexit (internal/child_process.js:200:12)
gyp ERR! System Darwin 11.4.2
gyp ERR! command "/usr/local/bin/node" "/usr/local/lib/node_modules/npm/node_modules/node-gyp/bin/node-gyp.js" "rebuild" "--release"
gyp ERR! cwd /Users/jarimado/.npm/lib/node_modules/iron-meteor/node_modules/fibers
gyp ERR! node -v v4.1.1
gyp ERR! node-gyp -v v3.0.3
gyp ERR! not ok 
Build failed
sh: nodejs: command not found
npm ERR! Darwin 11.4.2
npm ERR! argv "/usr/local/bin/node" "/usr/local/bin/npm" "install" "-g" "iron-meteor"
npm ERR! node v4.1.1
npm ERR! npm  v2.14.4
npm ERR! file sh
npm ERR! errno ENOENT
npm ERR! syscall spawn

npm ERR! fibers@1.0.7 install: `node build.js || nodejs build.js`
npm ERR! spawn ENOENT
npm ERR! 
npm ERR! Failed at the fibers@1.0.7 install script 'node build.js || nodejs build.js'.
npm ERR! This is most likely a problem with the fibers package,
npm ERR! not with npm itself.
npm ERR! Tell the author that this fails on your system:
npm ERR!     node build.js || nodejs build.js
npm ERR! You can get their info via:
npm ERR!     npm owner ls fibers
npm ERR! There is likely additional logging output above.

npm ERR! Please include the following file with any support request:
npm ERR!     /Users/jarimado/Google Drive/dev/js/Meteor/Meteor_apps/microscope/npm-debug.log




The current version of iron-cli is not compatible with node 4.1.1

I installed Node.js v0.12.7 via nvm. Is now working.