binding.gyp

{
  'variables': {
    'node_shared_openssl%': 'true'
  },
  'targets': [
    {
      'target_name': 'KeyModule',
      'sources': [
        'src/key.cc'
      ],
      "include_dirs" : [
        "<!(node -e \"require('nan')\")"
      ],
      'conditions': [
        # For Windows, require either a 32-bit or 64-bit
        # separately-compiled OpenSSL library.
        # Currently set up to use with the following OpenSSL distro:
        #
        # http://slproweb.com/products/Win32OpenSSL.html
        [
          'OS=="win"',
          {
            'conditions':
            [
              ['target_arch=="x64"', {
                'variables': { 'openssl_root%': 'C:/OpenSSL-Win64' },
              }, {
                'variables': { 'openssl_root%': 'C:/OpenSSL-Win32' }
              }]
            ],
            'libraries': [
              '-l<(openssl_root)/lib/libeay32.lib',
            ],
            'include_dirs': [
              '<(openssl_root)/include',
            ],
          },
          # Otherwise, if not Windows, link against the exposed OpenSSL
          # in Node.
          {
            'conditions':
            [
              [
                'node_shared_openssl=="false"', {
                  # so when "node_shared_openssl" is "false", then OpenSSL has been
                  # bundled into the node executable. So we need to include the same
                  # header files that were used when building node.
                  'include_dirs': [ '<(node_root_dir)/deps/openssl/openssl/include' ],
                  'conditions' : [
                    ['target_arch=="ia32"', {
                      'include_dirs': [ '<(node_root_dir)/deps/openssl/config/piii' ]
                    }],
                    ['target_arch=="x64"', {
                      'include_dirs': [ '<(node_root_dir)/deps/openssl/config/k8' ]
                    }],
                    ['target_arch=="arm"', {
                      'include_dirs': [ '<(node_root_dir)/deps/openssl/config/arm' ]
                    }]
                  ]
                }
              ]
            ]
          }
        ]
      ]
    }
  ]
}