Initial OpenBSD support...

tools/gyp/v8.gyp

 # Copyright 2009 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 488 matching lines @@
               'libraries': [
                 # Needed for clock_gettime() used by src/platform-linux.cc.
                 '-lrt',
             ]},
             'sources': [
               '../../src/platform-linux.cc',
               '../../src/platform-posix.cc'
             ],
           }
         ],
+        ['OS=="openbsd"', {
+            'link_settings': {
+              'libraries': [
+                '-L/usr/local/lib -lexecinfo',
+            ]},
+            'sources': [
+              '../../src/platform-openbsd.cc',
+              '../../src/platform-posix.cc'
+            ],
+          }
+        ],
         ['OS=="mac"', {
           'sources': [
             '../../src/platform-macos.cc',
             '../../src/platform-posix.cc'
           ]},
         ],
         ['OS=="win"', {
           'sources': [
             '../../src/platform-win32.cc',
           ],
@@ skipping 87 matching lines @@
       ],
       'conditions': [
         [ 'OS=="win"', {
           # This could be gotten by not setting chromium_code, if that's OK.
           'defines': ['_CRT_SECURE_NO_WARNINGS'],
         }],
       ],
     },
   ],
 }