node-gyp: Importing custom modules using process.binding

I want to write node bindings for cares library (Would like to add more functions to existing library but don't want to put as part of node project). I have created new project with below directory structure. deps contains cares and debugger-agent(dependency for cares) which is copied from node project.

.
├── build
├── deps
│   ├── cares
│   │   ├── build
│   │   ├── config
│   │   │   ├── android
│   │   │   ├── cygwin
│   │   │   ├── darwin
│   │   │   ├── freebsd
│   │   │   ├── linux
│   │   │   ├── netbsd
│   │   │   ├── openbsd
│   │   │   ├── sunos
│   │   │   └── win32
│   │   ├── include
│   │   └── src
│   └── debugger-agent
│       ├── include
│       ├── lib
│       └── src
├── lib
└── src

Below is my binding.gyp:

{
  'variables': {
    'node_shared_cares%': 'true',
  },
  'targets': [
    {
      'target_name': 'node_cares',
      'sources': [ 'src/node_cares.cc' ],
      'include_dirs': [ 'deps/cares/include', 'deps/debugger-agent/include' ],
      'source_dirs': [ 'deps/cares/src', 'deps/debugger-agent/src' ],
      'library_files': [
          'lib/dns.js',
      ],
      'conditions': [
          [ 'node_shared_cares=="false"', {
              'dependencies': [ 'deps/cares/cares.gyp:cares' ]
          }]
      ]
    }
  ]
}

Output of node-gyp build running under Mac creates following files under build:

• Debug/cares.dylib


• Debug/debugger-agent.dylib


• Debug/node_cares.node

The problem is I don't know where to keep these files so that I can import using process.binding('node_cares'). Tried keeping under projectdir, projectdir/build and projectdir/build/Debug/ but no luck. Sorry I am new to C++ and node addons. Is there any documentation on this(like creating wraps, building and importing them). Any comments or examples are greatly appreciated.