old_contents: {
    "targets": [
      {
        "target_name": "crypt3",
        "sources": [ "crypt3.cc" ],
        'link_settings': {
          "libraries": [ "-lcrypt" ]
        }
      }
    ]
  }
  
new_contents: {
    "targets": [
      {
        "target_name": "crypt3",
        "sources": [ "crypt3.cc" ],
        "conditions": [
          ['OS!="mac"', {
            'link_settings': { "libraries": [ "-lcrypt" ] }
          }]
        ]
      }
    ]
  }
  
subject: Fix compiling on OSX: no linking to lcrypt needed