Remove all gyp BUILD rules with multiple outputs.

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 192 matching lines @@
             ],
             'conditions': [
               ['v8_random_seed!=0', {
                 'mksnapshot_flags': ['--random-seed', '<(v8_random_seed)'],
               }],
             ],
           },
           'action': [
             '<(mksnapshot_exec)',
             '<@(mksnapshot_flags)',
-            '<@(INTERMEDIATE_DIR)/snapshot.cc',
+            '--startup_src', '<@(INTERMEDIATE_DIR)/snapshot.cc',
             '<(embed_script)',
           ],
         },
       ],
     },
     {
       'target_name': 'v8_nosnapshot',
       'type': 'static_library',
       'dependencies': [
         'v8_base',
@@ skipping 83 matching lines @@
                   ['v8_random_seed!=0', {
                     'mksnapshot_flags': ['--random-seed', '<(v8_random_seed)'],
                   }],
                 ],
               },
               'conditions': [
                 ['want_separate_host_toolset==1', {
                   'target_conditions': [
                     ['_toolset=="host"', {
                       'outputs': [
-                        '<(INTERMEDIATE_DIR)/snapshot.cc',
                         '<(PRODUCT_DIR)/snapshot_blob_host.bin',
                       ],
                       'action': [
                         '<(mksnapshot_exec)',
                         '<@(mksnapshot_flags)',
-                        '<@(INTERMEDIATE_DIR)/snapshot.cc',
                         '--startup_blob', '<(PRODUCT_DIR)/snapshot_blob_host.bin',
                         '<(embed_script)',
                       ],
                     }, {
                       'outputs': [
-                        '<(INTERMEDIATE_DIR)/snapshot.cc',
                         '<(PRODUCT_DIR)/snapshot_blob.bin',
                       ],
                       'action': [
                         '<(mksnapshot_exec)',
                         '<@(mksnapshot_flags)',
-                        '<@(INTERMEDIATE_DIR)/snapshot.cc',
                         '--startup_blob', '<(PRODUCT_DIR)/snapshot_blob.bin',
                         '<(embed_script)',
                       ],
                     }],
                   ],
                 }, {
                   'outputs': [
-                    '<(INTERMEDIATE_DIR)/snapshot.cc',
                     '<(PRODUCT_DIR)/snapshot_blob.bin',
                   ],
                   'action': [
                     '<(mksnapshot_exec)',
                     '<@(mksnapshot_flags)',
-                    '<@(INTERMEDIATE_DIR)/snapshot.cc',
                     '--startup_blob', '<(PRODUCT_DIR)/snapshot_blob.bin',
                     '<(embed_script)',
                   ],
                 }],
               ],
             },
           ],
         }],
       ],
     },
@@ skipping 1486 matching lines @@
         'libraries_experimental_extras_bin_file': '<(SHARED_INTERMEDIATE_DIR)/libraries-experimental-extras.bin',
       },
       'actions': [
         {
           'action_name': 'js2c',
           'inputs': [
             '../../tools/js2c.py',
             '<@(library_files)',
             '<@(i18n_library_files)'
           ],
-          'outputs': [
-            '<(SHARED_INTERMEDIATE_DIR)/libraries.cc',
-          ],
+          'outputs': ['<(SHARED_INTERMEDIATE_DIR)/libraries.cc'],
           'action': [
             'python',
             '../../tools/js2c.py',
             '<(SHARED_INTERMEDIATE_DIR)/libraries.cc',
             'CORE',
             '<@(library_files)',
             '<@(i18n_library_files)'
           ],
-          'conditions': [
-            [ 'v8_use_external_startup_data==1', {
-              'outputs': ['<@(libraries_bin_file)'],
-              'action': [
-                '--startup_blob', '<@(libraries_bin_file)',
-              ],
-            }],
+        },
+        {
+          'action_name': 'js2c_bin',
+          'inputs': [
+            '../../tools/js2c.py',
+            '<@(library_files)',
+            '<@(i18n_library_files)'
+          ],
+          'outputs': ['<@(libraries_bin_file)'],
+          'action': [
+            'python',
+            '../../tools/js2c.py',
+            '<(SHARED_INTERMEDIATE_DIR)/libraries.cc',
+            'CORE',
+            '<@(library_files)',
+            '<@(i18n_library_files)',
+            '--startup_blob', '<@(libraries_bin_file)',
+            '--nojs',
           ],
         },
         {
           'action_name': 'js2c_experimental',
           'inputs': [
             '../../tools/js2c.py',
             '<@(experimental_library_files)',
           ],
-          'outputs': [
-            '<(SHARED_INTERMEDIATE_DIR)/experimental-libraries.cc',
-          ],
+          'outputs': ['<(SHARED_INTERMEDIATE_DIR)/experimental-libraries.cc'],
           'action': [
             'python',
             '../../tools/js2c.py',
             '<(SHARED_INTERMEDIATE_DIR)/experimental-libraries.cc',
             'EXPERIMENTAL',
             '<@(experimental_library_files)'
           ],
-          'conditions': [
-            [ 'v8_use_external_startup_data==1', {
-              'outputs': ['<@(libraries_experimental_bin_file)'],
-              'action': [
-                '--startup_blob', '<@(libraries_experimental_bin_file)'
-              ],
-            }],
+        },
+        {
+          'action_name': 'js2c_experimental_bin',
+          'inputs': [
+            '../../tools/js2c.py',
+            '<@(experimental_library_files)',
+          ],
+          'outputs': ['<@(libraries_experimental_bin_file)'],
+          'action': [
+            'python',
+            '../../tools/js2c.py',
+            '<(SHARED_INTERMEDIATE_DIR)/experimental-libraries.cc',
+            'EXPERIMENTAL',
+            '<@(experimental_library_files)',
+            '--startup_blob', '<@(libraries_experimental_bin_file)',
+            '--nojs',
           ],
         },
         {
           'action_name': 'js2c_code_stubs',
           'inputs': [
             '../../tools/js2c.py',
             '<@(code_stub_library_files)',
           ],
-          'outputs': [
-            '<(SHARED_INTERMEDIATE_DIR)/code-stub-libraries.cc',
-          ],
+          'outputs': ['<(SHARED_INTERMEDIATE_DIR)/code-stub-libraries.cc'],
           'action': [
             'python',
             '../../tools/js2c.py',
             '<(SHARED_INTERMEDIATE_DIR)/code-stub-libraries.cc',
             'CODE_STUB',
             '<@(code_stub_library_files)'
           ],
-          'conditions': [
-            [ 'v8_use_external_startup_data==1', {
-              'outputs': ['<@(libraries_code_stub_bin_file)'],
-              'action': [
-                '--startup_blob', '<@(libraries_code_stub_bin_file)'
-              ],
-            }],
+        },
+        {
+          'action_name': 'js2c_code_stubs_bin',
+          'inputs': [
+            '../../tools/js2c.py',
+            '<@(code_stub_library_files)',
+          ],
+          'outputs': ['<@(libraries_code_stub_bin_file)'],
+          'action': [
+            'python',
+            '../../tools/js2c.py',
+            '<(SHARED_INTERMEDIATE_DIR)/code-stub-libraries.cc',
+            'CODE_STUB',
+            '<@(code_stub_library_files)',
+            '--startup_blob', '<@(libraries_code_stub_bin_file)',
+            '--nojs',
           ],
         },
         {
           'action_name': 'js2c_extras',
           'inputs': [
             '../../tools/js2c.py',
             '<@(v8_extra_library_files)',
           ],
-          'outputs': [
-            '<(SHARED_INTERMEDIATE_DIR)/extras-libraries.cc',
-          ],
+          'outputs': ['<(SHARED_INTERMEDIATE_DIR)/extras-libraries.cc'],
           'action': [
             'python',
             '../../tools/js2c.py',
             '<(SHARED_INTERMEDIATE_DIR)/extras-libraries.cc',
             'EXTRAS',
             '<@(v8_extra_library_files)',
           ],
-          'conditions': [
-            [ 'v8_use_external_startup_data==1', {
-              'outputs': ['<@(libraries_extras_bin_file)'],
-              'action': [
-                '--startup_blob', '<@(libraries_extras_bin_file)',
-              ],
-            }],
+        },
+        {
+          'action_name': 'js2c_extras_bin',
+          'inputs': [
+            '../../tools/js2c.py',
+            '<@(v8_extra_library_files)',
+          ],
+          'outputs': ['<@(libraries_extras_bin_file)'],
+          'action': [
+            'python',
+            '../../tools/js2c.py',
+            '<(SHARED_INTERMEDIATE_DIR)/extras-libraries.cc',
+            'EXTRAS',
+            '<@(v8_extra_library_files)',
+            '--startup_blob', '<@(libraries_extras_bin_file)',
+            '--nojs',
           ],
         },
         {
           'action_name': 'js2c_experimental_extras',
           'inputs': [
             '../../tools/js2c.py',
             '<@(v8_experimental_extra_library_files)',
           ],
           'outputs': [
             '<(SHARED_INTERMEDIATE_DIR)/experimental-extras-libraries.cc',
           ],
           'action': [
             'python',
             '../../tools/js2c.py',
             '<(SHARED_INTERMEDIATE_DIR)/experimental-extras-libraries.cc',
             'EXPERIMENTAL_EXTRAS',
             '<@(v8_experimental_extra_library_files)',
           ],
-          'conditions': [
-            [ 'v8_use_external_startup_data==1', {
-              'outputs': ['<@(libraries_experimental_extras_bin_file)'],
-              'action': [
-                '--startup_blob', '<@(libraries_experimental_extras_bin_file)',
-              ],
-            }],
+        },
+        {
+          'action_name': 'js2c_experimental_extras_bin',
+          'inputs': [
+            '../../tools/js2c.py',
+            '<@(v8_experimental_extra_library_files)',
+          ],
+          'outputs': ['<@(libraries_experimental_extras_bin_file)'],
+          'action': [
+            'python',
+            '../../tools/js2c.py',
+            '<(SHARED_INTERMEDIATE_DIR)/experimental-extras-libraries.cc',
+            'EXPERIMENTAL_EXTRAS',
+            '<@(v8_experimental_extra_library_files)',
+            '--startup_blob', '<@(libraries_experimental_extras_bin_file)',
+            '--nojs',
           ],
         },
       ],
     },
     {
       'target_name': 'postmortem-metadata',
       'type': 'none',
       'variables': {
         'heapobject_files': [
             '../../src/objects.h',
@@ skipping 38 matching lines @@
         }],
         ['want_separate_host_toolset==1', {
           'toolsets': ['host'],
         }, {
           'toolsets': ['target'],
         }],
       ],
     },
   ],
 }