NPM Install Fehler

Ich versuche meine app zu lokal ausführen. In einem Versuch zum installieren von NPM in den Ordner, ich erhalte eine Fehlermeldung, wenn es trifft zu:

npm ERR! error installing contextify@0.0.7

Ich habe gesucht im web, aber alle Ergebnisse stellte sich die Menschen immer Fehler bekommen in Windows7. Im mit OSX. Ich habe XCode installiert.

Unten finden Sie die gesamte print-out:

gorteks$ npm install
npm http GET https://registry.npmjs.org/jquery
npm http 304 https://registry.npmjs.org/jquery
npm http GET https://registry.npmjs.org/jsdom
npm http GET https://registry.npmjs.org/htmlparser
npm http 304 https://registry.npmjs.org/htmlparser
npm WARN htmlparser@1.7.3 package.json: bugs['web'] should probably be bugs['url']
npm http 304 https://registry.npmjs.org/jsdom
npm http GET https://registry.npmjs.org/cssom
npm http GET https://registry.npmjs.org/contextify
npm http 304 https://registry.npmjs.org/cssom
npm http 304 https://registry.npmjs.org/contextify

> contextify@0.0.7 preinstall /Users/gorteks/Sites/digidj-app/node_modules/jquery/node_modules/jsdom/node_modules/contextify
> node-waf clean || (exit 0); node-waf configure build

Nothing to clean (project not configured)
Setting srcdir to                        : /Users/gorteks/Sites/digidj-   app/node_modules/jquery/node_modules/jsdom/node_modules/contextify 
Setting blddir to                        : /Users/gorteks/Sites/digidj-app/node_modules/jquery/node_modules/jsdom/node_modules/contextify/build 
Checking for program g++ or c++          : not found 
/Users/gorteks/Sites/digidj-  app/node_modules/jquery/node_modules/jsdom/node_modules/contextify/wscript:11: error: could   not configure a cxx compiler!
npm ERR! error installing contextify@0.0.7
npm ERR! error installing jsdom@0.2.10
npm ERR! error installing jquery@1.6.3
npm ERR! contextify@0.0.7 preinstall: `node-waf clean || (exit 0); node-waf configure build`
npm ERR! `sh "-c" "node-waf clean || (exit 0); node-waf configure build"` failed with 1
npm ERR! 
npm ERR! Failed at the contextify@0.0.7 preinstall script.
npm ERR! This is most likely a problem with the contextify package,
npm ERR! not with npm itself.
npm ERR! Tell the author that this fails on your system:
npm ERR!     node-waf clean || (exit 0); node-waf configure build
npm ERR! You can get their info via:
npm ERR!     npm owner ls contextify
npm ERR! There is likely additional logging output above.
npm ERR! 
npm ERR! System Darwin 10.8.0
npm ERR! command "node" "/usr/local/bin/npm" "install"
npm ERR! cwd /Users/gorteks/Sites/digidj-app
npm ERR! node -v v0.6.7
npm ERR! npm -v 1.1.0-beta-10
npm ERR! code ELIFECYCLE
npm ERR! message contextify@0.0.7 preinstall: `node-waf clean || (exit 0); node-waf       configure build`
npm ERR! message `sh "-c" "node-waf clean || (exit 0); node-waf configure build"` failed   with 1
npm ERR! 
npm ERR! Additional logging details can be found in:
npm ERR!     /Users/gorteks/Sites/digidj-app/npm-debug.log
npm not ok

Vielen Dank für Eure Hilfe Jungs!