{
  'variables': {
    'install_prefix%': '',
    'standalone_product_dir':'<!@(pwd)/build'
  },
  'target_defaults': {
    'default_configuration': 'Release',
    'conditions': [
      ['OS=="mac"', {
        'xcode_settings': {
          'MACOSX_DEPLOYMENT_TARGET':'10.9',
          'CLANG_CXX_LIBRARY': 'libc++',
          'CLANG_CXX_LANGUAGE_STANDARD':'c++11',
          'GCC_VERSION': 'com.apple.compilers.llvm.clang.1_0',
          'GCC_ENABLE_CPP_EXCEPTIONS': 'YES',
          'GCC_ENABLE_CPP_RTTI':'YES',
          'OTHER_CPLUSPLUSFLAGS': [
            '-Werror',
            '-Wall',
            '-Wextra',
            '-Wshadow',
            '-Wno-variadic-macros',
            '-frtti',
            '-fexceptions',
            '-Wno-error=unused-parameter',
          ],
          'GCC_WARN_PEDANTIC': 'YES',
          'GCC_WARN_UNINITIALIZED_AUTOS': 'YES_AGGRESSIVE',
        },
      }],
      ['OS=="linux"', {
        'cflags_cc': [
          '-Wno-unknown-pragmas', # We are using '#pragma mark', but it is only available on Darwin.
          '-Wno-literal-suffix', # https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61653
          '-Wno-error=unused-parameter',
        ],
      }],
    ],
    'target_conditions': [
      ['_type == "static_library"', {
        'conditions': [
          ['OS=="mac"', {
            'xcode_settings': {
              'OTHER_CPLUSPLUSFLAGS': [ '-fPIC' ],
            },
          }, {
            'cflags_cc': [ '-fPIC' ],
          }]
        ],
      }],
    ],
    'cflags_cc': [ '-std=c++11', '-Werror', '-Wall', '-Wextra', '-Wshadow', '-frtti', '-fexceptions' ],
    'configurations': {
      'Debug': {
        'cflags_cc': [ '-g', '-O0', '-fno-omit-frame-pointer','-fwrapv', '-fstack-protector-all', '-fno-common' ],
        'defines': [ 'DEBUG' ],
        'xcode_settings': {
          'GCC_OPTIMIZATION_LEVEL': '0',
          'GCC_GENERATE_DEBUGGING_SYMBOLS': 'YES',
          'DEAD_CODE_STRIPPING': 'NO',
          'GCC_INLINES_ARE_PRIVATE_EXTERN': 'NO',
          'OTHER_CPLUSPLUSFLAGS': [ '-fno-omit-frame-pointer','-fwrapv', '-fstack-protector-all', '-fno-common']
        }
      },
      'Release': {
        'cflags_cc': [ '-O3' ],
        'defines': [ 'NDEBUG' ],
        'xcode_settings': {
          'GCC_OPTIMIZATION_LEVEL': '3',
          'GCC_GENERATE_DEBUGGING_SYMBOLS': 'NO',
          'DEAD_CODE_STRIPPING': 'YES',
          'GCC_INLINES_ARE_PRIVATE_EXTERN': 'NO'
        }
      },
    },
  }
}