Don't enable WPO on Win64 and require Server 2003 / x64 for win64

build/standalone.gypi

 # 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 295 matching lines @@
               }],
               ['component=="shared_library"', {
                 'ExceptionHandling': '1',  # /EHsc
               }, {
                 'ExceptionHandling': '0',
               }],
             ],
           },
           'VCLibrarianTool': {
             'AdditionalOptions': ['/ignore:4221'],
+            'conditions': [
+              ['v8_target_arch=="x64"', {
+                'TargetMachine': '17',  # x64
+              }, {
+                'TargetMachine': '1',  # ia32
+              }],
+            ],
           },
           'VCLinkerTool': {
-            'MinimumRequiredVersion': '5.01',  # XP.
             'AdditionalDependencies': [
               'ws2_32.lib',
             ],
             'GenerateDebugInformation': 'true',
             'MapFileName': '$(OutDir)\\$(TargetName).map',
             'ImportLibrary': '$(OutDir)\\lib\\$(TargetName).lib',
             'FixedBaseAddress': '1',
             # LinkIncremental values:
             #   0 == default
             #   1 == /INCREMENTAL:NO
             #   2 == /INCREMENTAL
             'LinkIncremental': '1',
             # SubSystem values:
             #   0 == not set
             #   1 == /SUBSYSTEM:CONSOLE
             #   2 == /SUBSYSTEM:WINDOWS
             'SubSystem': '1',
 
             'conditions': [
               ['v8_enable_i18n_support==1', {
                 'AdditionalDependencies': [
                   'advapi32.lib',
                 ],
               }],
+              ['v8_target_arch=="x64"', {
+                'MinimumRequiredVersion': '5.02',  # Server 2003.
+                'TargetMachine': '17',  # x64
+              }, {
+                'MinimumRequiredVersion': '5.01',  # XP.
+                'TargetMachine': '1',  # ia32
+              }],
             ],
           },
         },
       },
     }],  # OS=="win"
     ['OS=="mac"', {
       'xcode_settings': {
         'SYMROOT': '<(DEPTH)/xcodebuild',
       },
       'target_defaults': {
@@ skipping 43 matching lines @@
         ],
         'target_conditions': [
           ['_type!="static_library"', {
             'xcode_settings': {'OTHER_LDFLAGS': ['-Wl,-search_paths_first']},
           }],
         ],  # target_conditions
       },  # target_defaults
     }],  # OS=="mac"
   ],
 }