Make apks build from a single ant .xml template

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 21 matching lines @@
 #    names of some output files.
 #  apk_name - The final apk will be named <apk_name>-debug.apk (or -release)
 #  java_in_dir - The top-level java directory. The src should be in
 #    <java_in_dir>/src.
 #  resource_dir - The directory for resources.
 # Optional/automatic variables:
 #  additional_input_paths - These paths will be included in the 'inputs' list to
 #    ensure that this target is rebuilt when one of these paths changes.
 #  additional_src_dirs - Additional directories with .java files to be compiled
 #    and included in the output of this target.
+#  asset_location - The directory where assets are located (default:
+#    <PRODUCT_DIR>/<package_name>/assets).
 #  generated_src_dirs - Same as additional_src_dirs except used for .java files
 #    that are generated at build time. This should be set automatically by a
 #    target's dependencies. The .java files in these directories are not
 #    included in the 'inputs' list (unlike additional_src_dirs).
 #  input_jars_paths - The path to jars to be included in the classpath. This
 #    should be filled automatically by depending on the appropriate targets.
 #  native_libs_paths - The path to any native library to be included in this
 #    target.
 
 {
   'variables': {
+    'asset_location': '',
+    'additional_input_paths': [],
     'input_jars_paths': [],
     'native_libs_paths': [],
-    'additional_input_paths': [],
     'additional_src_dirs': [],
     'generated_src_dirs': [],
   },
   'actions': [
     {
       'action_name': 'ant_<(package_name)_apk',
       'message': 'Building <(package_name) apk.',
       'inputs': [
-        '<(java_in_dir)/<(package_name)_apk.xml',
         '<(java_in_dir)/AndroidManifest.xml',
+        '<(DEPTH)/build/android/ant/chromium-apk.xml',
         '<(DEPTH)/build/android/ant/common.xml',
         '<(DEPTH)/build/android/ant/sdk-targets.xml',
         # If there is a separate find for additonal_src_dirs, it will find the
         # wrong .java files when additional_src_dirs is empty.
         '>!@(find >(java_in_dir) >(additional_src_dirs) -name "*.java")',
         '<!@(find <(java_in_dir)/<(resource_dir) -name "*")',
         '>@(input_jars_paths)',
         '>@(native_libs_paths)',
         '>@(additional_input_paths)',
       ],
       'outputs': [
         '<(PRODUCT_DIR)/apks/<(apk_name)-debug.apk',
       ],
       'action': [
         'ant',
         '-DAPP_ABI=<(android_app_abi)',
         '-DANDROID_GDBSERVER=<(android_gdbserver)',
         '-DANDROID_SDK=<(android_sdk)',
         '-DANDROID_SDK_ROOT=<(android_sdk_root)',
         '-DANDROID_SDK_TOOLS=<(android_sdk_tools)',
         '-DANDROID_SDK_VERSION=<(android_sdk_version)',
         '-DANDROID_TOOLCHAIN=<(android_toolchain)',
         '-DCHROMIUM_SRC=<(ant_build_out)/../..',
         '-DCONFIGURATION_NAME=<(CONFIGURATION_NAME)',
         '-DPRODUCT_DIR=<(ant_build_out)',
 
+        '-DAPK_NAME=<(apk_name)',
+        '-DASSET_DIR=<(asset_location)',
         '-DADDITIONAL_SRC_DIRS=>(additional_src_dirs)',
+        '-DGENERATED_SRC_DIRS=>(generated_src_dirs)',
         '-DINPUT_JARS_PATHS=>(input_jars_paths)',
-        '-DGENERATED_SRC_DIRS=>(generated_src_dirs)',
         '-DPACKAGE_NAME=<(package_name)',
         '-DRESOURCE_DIR=<(resource_dir)',
 
+        '-Dbasedir=<(java_in_dir)',
         '-buildfile',
-        '<(java_in_dir)/<(package_name)_apk.xml'
+        '<(DEPTH)/build/android/ant/chromium-apk.xml'
       ]
     },
   ],
 }