Predex java libraries

build/java.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 Java in a consistent manner.
 #
 # To use this, create a gyp target with the following form:
 # {
 #   'target_name': 'my-package_java',
@@ skipping 35 matching lines @@
   'dependencies': [
     '<(DEPTH)/build/build_output_dirs_android.gyp:build_output_dirs'
   ],
   'variables': {
     'input_jars_paths': [ '<(android_sdk_jar)' ],
     'additional_src_dirs': [],
     'javac_includes': [],
     'jar_name': '<(_target_name).jar',
     'jar_path': '<(PRODUCT_DIR)/lib.java/<(jar_name)',
     'jar_excluded_classes': [ '*/R.class', '*/R##*.class' ],
+    'dex_path': '<(PRODUCT_DIR)/lib.java/<(_target_name).dex.jar',

[shashi, 2013/03/23 01:07:41]

nit: it may be cleaner to have a separate folder: lib.dex.java

     'additional_input_paths': ['>@(additional_R_files)'],
     'generated_src_dirs': ['>@(generated_R_dirs)'],
     'generated_R_dirs': [],
     'additional_R_files': [],
     'has_java_resources%': 0,
     'java_strings_grd%': '',
     'intermediate_dir': '<(SHARED_INTERMEDIATE_DIR)/<(_target_name)',
     'classes_dir': '<(intermediate_dir)/classes',
     'compile_stamp': '<(intermediate_dir)/compile.stamp',
   },
   # This all_dependent_settings is used for java targets only. This will add the
   # jar path to the classpath of dependent java targets.

[Yaron, 2013/03/23 00:33:05]

Nit: update

   'all_dependent_settings': {
     'variables': {
       'input_jars_paths': ['<(jar_path)'],
+      'library_dexed_jars_paths': ['<(dex_path)'],
     },
   },
   'conditions': [
     ['has_java_resources == 1', {
       'variables': {
         'res_dir': '<(java_in_dir)/res',
         'out_res_dir': '<(intermediate_dir)/res',
         'R_dir': '<(intermediate_dir)/java_R',
         'R_file': '<(R_dir)/<(R_package_relpath)/R.java',
         'R_text_file': '<(R_dir)/R.txt',
@@ skipping 118 matching lines @@
       'action': [
         'python', '<(DEPTH)/build/android/jar.py',
         '--classes-dir=<(classes_dir)',
         '--jar-path=<(jar_path)',
         '--excluded-classes=<(jar_excluded_classes)',
 
         # TODO(newt): remove this once http://crbug.com/177552 is fixed in ninja.
         '--ignore=>!(echo \'>(_inputs)\' | md5sum)',
       ]
     },
+    {
+      'action_name': 'dex_<(_target_name)',
+      'message': 'Dexing <(_target_name) jar',
+      'inputs': [
+        '<(DEPTH)/build/android/pylib/build_utils.py',
+        '<(DEPTH)/build/android/dex.py',
+        '<(jar_path)',
+      ],
+      'outputs': [
+        '<(dex_path)',
+      ],
+      'action': [
+        'python', '<(DEPTH)/build/android/dex.py',
+        '--dex-path=<(dex_path)',
+        '--android-sdk-root=<(android_sdk_root)',
+
+        # TODO(newt): remove this once http://crbug.com/177552 is fixed in ninja.
+        '--ignore=>!(echo >(_inputs) | md5sum)',
+
+        '<(jar_path)',
+      ]
+    },
+
   ],
 }