Reland Auto-generate v8 version based on tags.

tools/gyp/v8.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 318 matching lines @@
                     '<(embed_script)',
                   ],
                 }],
               ],
             },
           ],
         }],
       ],
     },
     {
+      'target_name': 'v8_version',
+      'type': 'none',
+      'conditions': [
+        ['want_separate_host_toolset==1', {
+          'toolsets': ['host'],
+        }, {
+          'toolsets': ['target'],
+        }],
+      ],
+      'actions': [
+        {
+          'action_name': 'generate_v8_version',
+          'inputs': [
+            '../../tools/push-to-trunk/generate_version.py',
+            '../../src/version.cc',
+          ],
+          'outputs': [
+            '<(SHARED_INTERMEDIATE_DIR)/version.cc',
+          ],
+          'action': [
+            'python',
+            '../../tools/push-to-trunk/generate_version.py',
+            '<(SHARED_INTERMEDIATE_DIR)/version.cc',
+          ],
+        },
+      ],
+    },
+    {
       'target_name': 'v8_base',
       'type': 'static_library',
       'dependencies': [
         'v8_libbase',
       ],
       'variables': {
         'optimize': 'max',
       },
       'include_dirs+': [
         '../..',
       ],
       'sources': [  ### gcmole(all) ###
+        '<(SHARED_INTERMEDIATE_DIR)/version.cc',
         '../../src/accessors.cc',
         '../../src/accessors.h',
         '../../src/allocation.cc',
         '../../src/allocation.h',
         '../../src/allocation-site-scopes.cc',
         '../../src/allocation-site-scopes.h',
         '../../src/allocation-tracker.cc',
         '../../src/allocation-tracker.h',
         '../../src/api.cc',
         '../../src/api.h',
@@ skipping 518 matching lines @@
         '../../src/utils.cc',
         '../../src/utils.h',
         '../../src/v8.cc',
         '../../src/v8.h',
         '../../src/v8memory.h',
         '../../src/v8threads.cc',
         '../../src/v8threads.h',
         '../../src/variables.cc',
         '../../src/variables.h',
         '../../src/vector.h',
-        '../../src/version.cc',
         '../../src/version.h',
         '../../src/vm-state-inl.h',
         '../../src/vm-state.h',
         '../../src/zone-inl.h',
         '../../src/zone.cc',
         '../../src/zone.h',
         '../../src/third_party/fdlibm/fdlibm.cc',
         '../../src/third_party/fdlibm/fdlibm.h',
       ],
       'conditions': [
         ['want_separate_host_toolset==1', {
+          'dependencies': [
+            'v8_version#host',
+          ],
           'toolsets': ['host', 'target'],
         }, {
+          'dependencies': [
+            'v8_version',
+          ],
           'toolsets': ['target'],
         }],
         ['v8_target_arch=="arm"', {
           'sources': [  ### gcmole(arch:arm) ###
             '../../src/arm/assembler-arm-inl.h',
             '../../src/arm/assembler-arm.cc',
             '../../src/arm/assembler-arm.h',
             '../../src/arm/builtins-arm.cc',
             '../../src/arm/code-stubs-arm.cc',
             '../../src/arm/code-stubs-arm.h',
@@ skipping 850 matching lines @@
         }],
         ['want_separate_host_toolset==1', {
           'toolsets': ['host'],
         }, {
           'toolsets': ['target'],
         }],
       ],
     },
   ],
 }