[Android] Create native lib placeholder files

build/java_apk.gypi

 # Copyright (c) 2012 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 # This file is meant to be included into a target to provide a rule
 # to build Android APKs in a consistent manner.
 #
 # To use this, create a gyp target with the following form:
 # {
 #   'target_name': 'my_package_apk',
@@ skipping 155 matching lines @@
     'native_lib_version_name%': '',
     'use_chromium_linker%' : 0,
     'load_library_from_zip_file%' : 0,
     'use_relocation_packer%' : 0,
     'enable_chromium_linker_tests%': 0,
     'emma_instrument%': '<(emma_instrument)',
     'apk_package_native_libs_dir': '<(apk_package_native_libs_dir)',
     'unsigned_standalone_apk_path': '<(unsigned_standalone_apk_path)',
     'libchromium_android_linker': 'libchromium_android_linker.>(android_product_extension)',
     'extra_native_libs': [],
+    'native_lib_placeholder_stamp': '<(apk_package_native_libs_dir)/<(android_app_abi)/native_lib_placeholder.stamp',
+    'native_lib_placeholders': [],
   },
   # Pass the jar path to the apk's "fake" jar target.  This would be better as
   # direct_dependent_settings, but a variable set by a direct_dependent_settings
   # cannot be lifted in a dependent to all_dependent_settings.
   'all_dependent_settings': {
     'conditions': [
       ['proguard_enabled == "true"', {
         'variables': {
           'proguard_enabled': 'true',
         }
@@ skipping 191 matching lines @@
             'ordered_libraries_file': '<(additional_ordered_libraries_file)',
             'stripped_libraries_dir': '<(libraries_source_dir)',
             'input_paths': [
               '<@(additional_bundled_libs)',
               '<(strip_stamp)',
             ],
             'stamp': '<(strip_additional_stamp)'
           },
           'includes': ['../build/android/strip_native_libraries.gypi'],
         },
+        {
+          'action_name': 'Create native lib placeholder files for previous releases',
+          'inputs': [
+            '<(DEPTH)/build/android/gyp/create_placeholder_files.py',
+          ],
+          'outputs': [
+            '<(native_lib_placeholder_stamp)',
+          ],
+          'action': [
+            'python', '<(DEPTH)/build/android/gyp/create_placeholder_files.py',
+            '--dest-lib-dir=<(apk_package_native_libs_dir)/<(android_app_abi)/',
+            '--stamp=<(native_lib_placeholder_stamp)',
+            '<@(native_lib_placeholders)',
+          ],
+        },
       ],
       'conditions': [
         ['gyp_managed_install == 1', {
           'variables': {
             # This "library" just needs to be put in the .apk. It is not loaded
             # at runtime.
             'placeholder_native_library_path':
               '<(apk_package_native_libs_dir)/<(android_app_abi)/libfix.crbug.384638.so',

[cjhopman, 2014/09/18 01:07:24]

Update this to use the new placeholder action (and delete creat_placeholder_lib
below).

             'package_input_paths': [ '<(placeholder_native_library_path)' ],
             'libraries_top_dir': '<(intermediate_dir)/lib.stripped',
             'libraries_source_dir': '<(libraries_top_dir)/lib/<(android_app_abi)',
             'device_library_dir': '<(device_intermediate_dir)/lib.stripped',
             'configuration_name': '<(CONFIGURATION_NAME)',
           },
           'dependencies': [
             '<(DEPTH)/build/android/setup.gyp:get_build_device_configurations',
           ],
           'actions': [
@@ skipping 478 matching lines @@
         '-DEMMA_INSTRUMENT=<(emma_instrument)',
         '-DEMMA_DEVICE_JAR=<(emma_device_jar)',
 
         '-Dbasedir=.',
         '-buildfile',
         '<(DEPTH)/build/android/ant/apk-package.xml',
       ]
     },
   ],
 }