{
  'variables': {
    'GTK_Root%': 'C:/GTK',  # Set the location of GTK all-in-one bundle
    'with_jpeg%': 'false',
    'with_gif%': 'false',
    'with_pango%': 'false'
  },
  'targets': [
    {
      'target_name': 'canvas',
      'sources': [ 
        'src/Canvas.cc',
        'src/CanvasGradient.cc',
        'src/CanvasPattern.cc',
        'src/CanvasRenderingContext2d.cc',
        'src/color.cc',
        'src/Image.cc',
        'src/ImageData.cc',
        'src/init.cc',
        'src/PixelArray.cc',
      ],
      'conditions': [
        ['OS=="win"', {
          'libraries': [
            '-l<(GTK_Root)/lib/cairo.lib'
          ],
          'include_dirs': [
            '<(GTK_Root)/include',
          ],
          'defines': [
            'snprintf=_snprintf',
            '_USE_MATH_DEFINES'  # for M_PI
          ]
        }, {  # 'OS!="win"'
          'libraries': [
            '-lpixman-1',
            '-lcairo'
          ]
        }],
        ['with_pango=="true"', {
          'defines': [
            'HAVE_PANGO'
          ],
          'include_dirs': [ # tried to pass through cflags but failed
            '<!@(pkg-config pangocairo --cflags-only-I | sed s/-I//g)'
          ],
          'libraries': [
            '<!@(pkg-config pangocairo --libs)'
          ]
        }],
        ['with_jpeg=="true"', {
          'defines': [
            'HAVE_JPEG'
          ],
          'conditions': [
            ['OS=="win"', {
              'libraries': [
                '-l<(GTK_Root)/lib/jpeg.lib'
              ]
            }, {
              'libraries': [
                '-ljpeg'
              ]
            }]
          ]
        }],
        ['with_gif=="true"', {
          'defines': [
            'HAVE_GIF'
          ],
          'conditions': [
            ['OS=="win"', {
              'libraries': [
                '-l<(GTK_Root)/lib/gif.lib'
              ]
            }, {
              'libraries': [
                '-lgif'
              ]
            }]
          ]
        }]
      ]
    }
  ]
}