Add support for the QNX operating system.

src/d8.gyp

 # Copyright 2012 the V8 project authors. All rights reserved.
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
 # met:
 #
 #     * Redistributions of source code must retain the above copyright
 #       notice, this list of conditions and the following disclaimer.
 #     * Redistributions in binary form must reproduce the above
 #       copyright notice, this list of conditions and the following
 #       disclaimer in the documentation and/or other materials provided
@@ skipping 48 matching lines @@
             [ 'want_separate_host_toolset==1', {
               'dependencies': [
                 'd8_js2c#host',
               ],
             }, {
               'dependencies': [
                 'd8_js2c',
               ],
             }],
             ['(OS=="linux" or OS=="mac" or OS=="freebsd" or OS=="netbsd" \
-               or OS=="openbsd" or OS=="solaris" or OS=="android")', {
+               or OS=="openbsd" or OS=="solaris" or OS=="android" \
+               or OS=="qnx")', {
               'sources': [ 'd8-posix.cc', ]
             }],
             [ 'OS=="win"', {
               'sources': [ 'd8-windows.cc', ]
             }],
           ],
         }],
         ['v8_enable_vtunejit==1', {
           'dependencies': [
             '../src/third_party/vtune/v8vtune.gyp:v8_vtune',
@@ skipping 44 matching lines @@
             '<@(_outputs)',
             'D8',
             'off',  # compress startup data
             '<@(js_files)'
           ],
         },
       ],
     }
   ],
 }