ability to build d8 w/ post-mortem data

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 62 matching lines @@
           'conditions': [
             [ 'want_separate_host_toolset==1', {
               'dependencies': [
                 'd8_js2c#host',
               ],
             }, {
               'dependencies': [
                 'd8_js2c',
               ],
             }],
+            [ 'v8_postmortem_support=="true"', {
+              'xcode_settings': {
+                'OTHER_LDFLAGS': [
+                   '-Wl,-force_load,<(PRODUCT_DIR)/libv8_base.a'
+                ],
+              },
+            }],
           ],
         }],
         ['v8_enable_vtunejit==1', {
           'dependencies': [
             '../src/third_party/vtune/v8vtune.gyp:v8_vtune',
           ],
         }],
         ['v8_enable_i18n_support==1', {
           'dependencies': [
             '<(icu_gyp_path):icui18n',
@@ skipping 60 matching lines @@
             '../build/isolate.gypi',
           ],
           'sources': [
             'd8.isolate',
           ],
         },
       ],
     }],
   ],
 }