title: Getting error when trying to install pm2
body: <p>I am trying to install pm2 on my MAC OS version 10.8.5. But when i am intstalling it.</p>
  
  <p>I have installed XCODE 5.1.1 on my MAC. but Even after doing that i am getting the gyp ERR! stack Error: not found: make".IS not it that GNU make comes with XCODE and was supposed to work ideally.</p>
  
  <p>Please see below whole ERROR when trying to install it.</p>
  
  <pre>
  Rajeshs-MacBook-Pro:~ rajesh$ npm install pm2
  
  > fsevents@0.3.1 install /Users/rajesh/node_modules/pm2/node_modules/chokidar/node_modules/fsevents
  > node-gyp rebuild
  
  child_process: customFds option is deprecated, use stdio instead.
  -
  
  Agreeing to the Xcode/iOS license requires admin privileges, please re-run as root via sudo.
  
  
  
  gyp ERR! build error 
  gyp ERR! stack Error: not found: make
  gyp ERR! stack     at F (/Users/rajesh/.nvm/v0.11.14/lib/node_modules/npm/node_modules/which/which.js:43:28)
  gyp ERR! stack     at E (/Users/rajesh/.nvm/v0.11.14/lib/node_modules/npm/node_modules/which/which.js:46:29)
  gyp ERR! stack     at /Users/rajesh/.nvm/v0.11.14/lib/node_modules/npm/node_modules/which/which.js:57:16
  gyp ERR! stack     at Object.oncomplete (evalmachine.:93:15)
  gyp ERR! System Darwin 12.5.0
  gyp ERR! command "node" "/Users/rajesh/.nvm/v0.11.14/lib/node_modules/npm/node_modules/node-gyp/bin/node-gyp.js" "rebuild"
  gyp ERR! cwd /Users/rajesh/node_modules/pm2/node_modules/chokidar/node_modules/fsevents
  gyp ERR! node -v v0.11.14
  gyp ERR! node-gyp -v v1.0.2
  gyp ERR! not ok 
  npm WARN optional dep failed, continuing fsevents@0.3.1
  pm2@0.12.1 node_modules/pm2
  ├── ikt@0.0.0
  ├── json-stringify-safe@5.0.0
  ├── commander@2.4.0
  ├── eventemitter2@0.4.14
  ├── colors@0.6.2
  ├── cli-table@0.3.0
  ├── pidusage@0.1.0
  ├── cron@1.0.5
  ├── async@0.9.0
  ├── isbinaryfile@2.0.2
  ├── vizion@0.2.1
  ├── axm@0.2.24
  ├── shelljs@0.3.0
  ├── moment@2.8.4
  ├── debug@2.1.0 (ms@0.6.2)
  ├── pm2-deploy@0.1.2 (tv4@1.0.18)
  ├── nssocket@0.5.1 (lazy@1.0.11)
  ├── pm2-axon-rpc@0.3.6 (commander@1.0.5)
  ├── coffee-script@1.8.0 (mkdirp@0.3.5)
  ├── pm2-rpc-fallback@3.0.9 (axon@1.0.0, commander@1.0.5)
  ├── pm2-multimeter@0.1.2 (charm@0.1.2)
  ├── chalk@0.5.1 (escape-string-regexp@1.0.2, ansi-styles@1.1.0, supports-color@0.2.0, has-ansi@0.1.0, strip-ansi@0.3.0)
  ├── punt@2.2.0 (amp-message@0.1.2)
  ├── pm2-axon@2.0.7 (amp-message@0.1.2, escape-regexp@0.0.1, configurable@0.0.1, amp@0.3.1, debug@2.0.0)
  ├── pm2-logs@0.1.1 (blessed@0.0.36, pm2-interface@1.1.0, chalk@0.4.0)
  └── chokidar@0.10.9 (async-each@0.1.6, readdirp@1.1.0)
  </pre>