old_contents: {
    'targets': [{
      'target_name': 'farmhash',
      'sources': [
         'src/upstream/farmhash.cc',
         'src/bindings.cc'
      ],
      'include_dirs' : [
        "<!@(node -p \"require('node-addon-api').include\")"
      ],
      'dependencies': [
        "<!(node -p \"require('node-addon-api').gyp\")"
      ],
      'cflags_cc': [
        '-Wall',
        '-Ofast',
        '-funroll-loops'
      ],
      'cflags!': [ '-fno-exceptions' ],
      'cflags_cc!': [ '-fno-exceptions' ],
      'conditions': [
        ['OS=="win"', {
          'defines': [
            'FARMHASH_OPTIONAL_BUILTIN_EXPECT'
          ]
        }],
        ['target_arch=="ia32"', {
          'cflags_cc': [
            '-march=native'
          ]
        }],
        ['target_arch=="x64"', {
          'cflags_cc': [
            '-march=native'
          ]
        }]
      ],
      'xcode_settings': {
        'CLANG_CXX_LIBRARY': 'libc++',
        'GCC_ENABLE_CPP_EXCEPTIONS': 'YES',
        'GCC_SYMBOLS_PRIVATE_EXTERN': 'YES',
        'MACOSX_DEPLOYMENT_TARGET': '10.7',
        'OTHER_CPLUSPLUSFLAGS': [
          '-fexceptions',
          '-Wall',
          '-march=native',
          '-Ofast',
          '-funroll-loops'
        ]
      },
      'configurations': {
        'Release': {
          'msvs_settings': {
            'VCCLCompilerTool': {
              'ExceptionHandling': 1,
              'DisableSpecificWarnings': ['4244', '4307', '4319']
            }
          }
        }
      }
    }]
  }
  
new_contents: {
    'targets': [{
      'target_name': 'farmhash',
      'sources': [
         'src/upstream/farmhash.cc',
         'src/bindings.cc'
      ],
      'include_dirs' : [
        "<!@(node -p \"require('node-addon-api').include\")"
      ],
      'dependencies': [
        "<!(node -p \"require('node-addon-api').gyp\")"
      ],
      'cflags_cc': [
        '-Wall',
        '-Ofast',
        '-funroll-loops'
      ],
      'cflags!': [ '-fno-exceptions' ],
      'cflags_cc!': [ '-fno-exceptions' ],
      'conditions': [
        ['OS=="win"', {
          'defines': [
            'FARMHASH_OPTIONAL_BUILTIN_EXPECT'
          ]
        }],
        ['target_arch=="ia32"', {
          'cflags_cc': [
            '-march=native'
          ]
        }],
        ['target_arch=="x64"', {
          'cflags_cc': [
            '-march=native'
          ]
        }],
        ['target_arch!="arm64"', {
          'xcode_settings': {
            'OTHER_CPLUSPLUSFLAGS+': [
              '-march=native',
            ]
          }
        }]
      ],
      'xcode_settings': {
        'CLANG_CXX_LIBRARY': 'libc++',
        'GCC_ENABLE_CPP_EXCEPTIONS': 'YES',
        'GCC_SYMBOLS_PRIVATE_EXTERN': 'YES',
        'MACOSX_DEPLOYMENT_TARGET': '10.7',
        'OTHER_CPLUSPLUSFLAGS': [
          '-fexceptions',
          '-Wall',
          '-Ofast',
          '-funroll-loops'
        ]
      },
      'configurations': {
        'Release': {
          'msvs_settings': {
            'VCCLCompilerTool': {
              'ExceptionHandling': 1,
              'DisableSpecificWarnings': ['4244', '4307', '4319']
            }
          }
        }
      }
    }]
  }
  
subject: add support for AppleSilicon chips (#37)