message: enable rtti on windows
diff: ]
  , 'msvs_settings': {
  'VCCLCompilerTool': {
  - 'RuntimeTypeInfo': 'false'
  - , 'EnableFunctionLevelLinking': 'true'
  + 'EnableFunctionLevelLinking': 'true'
  , 'ExceptionHandling': '2'
  , 'DisableSpecificWarnings': [ '4355', '4530' ,'4267', '4244' ]
  }
  }
  + # Must define RuntimeTypeInfo per configuration to override
  + # the default setting (see nodejs/node-gyp#857 and #26).
  + , 'configurations': {
  + 'Debug': {
  + 'msvs_settings': {
  + 'VCCLCompilerTool': {
  + 'RuntimeTypeInfo': 'true'
  + }
  + }
  + },
  + 'Release': {
  + 'msvs_settings': {
  + 'VCCLCompilerTool': {
  + 'RuntimeTypeInfo': 'true'
  + }
  + }
  + }
  + }
  }, { # OS != "win"
  'sources': [
  'leveldb-<(ldbversion)/port/port_posix.cc'
  