Extract common macros and start a base library

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 219 matching lines @@
             'python',
             '../../tools/generate-trig-table.py',
             '<@(_outputs)',
           ],
         },
       ]
     },
     {
       'target_name': 'v8_base.<(v8_target_arch)',
       'type': 'static_library',
+      'dependencies': [
+        'v8_libbase.<(v8_target_arch)',
+      ],
       'variables': {
         'optimize': 'max',
       },
       'include_dirs+': [
         '../../src',
       ],
       'sources': [  ### gcmole(all) ###
         '../../src/accessors.cc',
         '../../src/accessors.h',
         '../../src/allocation.cc',
@@ skipping 774 matching lines @@
             ['OS=="win"', {
               'defines': ['ICU_UTIL_DATA_IMPL=ICU_UTIL_DATA_SHARED'],
             }, {
               'defines': ['ICU_UTIL_DATA_IMPL=ICU_UTIL_DATA_STATIC'],
             }],
           ],
         }],
       ],
     },
     {
+      'target_name': 'v8_libbase.<(v8_target_arch)',
+      # TODO(jochen): Should be a static library once it has sources in it.
+      'type': 'none',
+      'variables': {
+        'optimize': 'max',
+      },
+      'include_dirs+': [
+        '../../src',
+      ],
+      'sources': [
+        '../../src/base/macros.h',
+      ],
+      'conditions': [
+        ['want_separate_host_toolset==1', {
+          'toolsets': ['host', 'target'],
+        }, {
+          'toolsets': ['target'],
+        }],
+        ['component=="shared_library"', {
+          'defines': [
+            'BUILDING_V8_SHARED',
+            'V8_SHARED',
+          ],
+        }],
+      ],
+    },
+    {
       'target_name': 'js2c',
       'type': 'none',
       'conditions': [
         ['want_separate_host_toolset==1', {
           'toolsets': ['host'],
         }, {
           'toolsets': ['target'],
         }],
         ['v8_enable_i18n_support==1', {
           'variables': {
@@ skipping 132 matching lines @@
         }],
         ['v8_compress_startup_data=="bz2"', {
           'libraries': [
             '-lbz2',
           ]
         }],
       ],
     },
   ],
 }