[Ignition] Use separate startup data for ignition.

tools/gyp/v8.gyp

 # Copyright 2012 the V8 project authors. All rights reserved.
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 # 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 283 matching lines @@
             '../../src/snapshot/natives-external.cc',
             '../../src/snapshot/snapshot-external.cc',
           ],
           'actions': [
             {
               'action_name': 'run_mksnapshot (external)',
               'inputs': [
                 '<(mksnapshot_exec)',
               ],
               'variables': {
                 'mksnapshot_flags': [

[Michael Achenbach, 2016/02/03 15:48:06]

Hmm, my suspicion is that these mksnapshot_flags and the ones below get
magically concatenated by gyp. I'll try with a different var name...

                   '--log-snapshot-positions',
                   '--logfile', '<(INTERMEDIATE_DIR)/snapshot.log',
                 ],
                 'conditions': [
                   ['v8_random_seed!=0', {
                     'mksnapshot_flags': ['--random-seed', '<(v8_random_seed)'],
                   }],
                   ['v8_vector_stores!=0', {
                     'mksnapshot_flags': ['--vector-stores'],
                   }],
@@ skipping 31 matching lines @@
                   'action': [
                     '<(mksnapshot_exec)',
                     '<@(mksnapshot_flags)',
                     '--startup_blob', '<(PRODUCT_DIR)/snapshot_blob.bin',
                     '<(embed_script)',
                   ],
                 }],
               ],
             },
           ],
+          # Extra snapshot blob for ignition. Separate host toolset is not
+          # supported.
+          'conditions': [
+            ['v8_separate_ignition_snapshot==1', {
+              # This is concatenated to the other actions list of
+              # v8_external_snapshot.
+              'actions': [
+                {
+                  'action_name': 'run_mksnapshot (ignition)',
+                  'inputs': [
+                    '<(mksnapshot_exec)',
+                  ],
+                  'variables': {
+                    # TODO: Extract common mksnapshot_flags to a separate
+                    # variable.
+                    'mksnapshot_flags': [
+                      '--ignition',
+                      '--log-snapshot-positions',
+                      '--logfile', '<(INTERMEDIATE_DIR)/snapshot_ignition.log',
+                    ],
+                    'conditions': [
+                      ['v8_random_seed!=0', {
+                        'mksnapshot_flags': ['--random-seed', '<(v8_random_seed)'],
+                      }],
+                      ['v8_vector_stores!=0', {
+                        'mksnapshot_flags': ['--vector-stores'],
+                      }],
+                    ],
+                  },
+                  'outputs': [
+                    '<(PRODUCT_DIR)/snapshot_blob_ignition.bin',
+                  ],
+                  'action': [
+                    '<(mksnapshot_exec)',
+                    '<@(mksnapshot_flags)',
+                    '--startup_blob', '<(PRODUCT_DIR)/snapshot_blob_ignition.bin',
+                    '<(embed_script)',
+                  ],
+                },
+              ],
+            }],
+          ],
         }],
       ],
     },
     {
       'target_name': 'v8_base',
       'type': 'static_library',
       'dependencies': [
         'v8_libbase',
       ],
       'variables': {
@@ skipping 1769 matching lines @@
         }],
         ['want_separate_host_toolset==1', {
           'toolsets': ['host'],
         }, {
           'toolsets': ['target'],
         }],
       ],
     },
   ],
 }