binding.gyp

{
    "targets": [
        {
            "target_name": "rsa_keypair",
            "sources": [
                "src/rsa_keypair.cc"
            ],
            'conditions': [
                ['OS=="win"', {
                    'conditions': [
                        # "openssl_root" is the directory on Windows of the OpenSSL files
                        ['target_arch=="x64"', {
                            'variables': {
                                'openssl_root%': 'C:/OpenSSL-Win64'
                            },
                        }, {
                            'variables': {
                                'openssl_root%': 'C:/OpenSSL-Win32'
                            },
                        }],
                    ],
                    'defines': [
                        'uint=unsigned int',
                    ],
                    'libraries': [
                        '-l<(openssl_root)/lib/libeay32.lib',
                    ],
                    'include_dirs': [
                        '<(openssl_root)/include'
                    ],
                }, {  # OS!="win"
                    'include_dirs': [
                      # use node's bundled openssl headers on Unix platforms
                      '<(node_root_dir)/deps/openssl/openssl/include'
                    ],
                }],
            ],
        }
    ]
}