1# Copyright (C) 2012 The Android Open Source Project
2#
3# Licensed under the Apache License, Version 2.0 (the "License");
4# you may not use this file except in compliance with the License.
5# You may obtain a copy of the License at
6#
7#      http://www.apache.org/licenses/LICENSE-2.0
8#
9# Unless required by applicable law or agreed to in writing, software
10# distributed under the License is distributed on an "AS IS" BASIS,
11# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12# See the License for the specific language governing permissions and
13# limitations under the License.
14
15# Clean steps that need global knowledge of individual modules.
16# This file must be included after all Android.mks have been loaded.
17
18# Checks the current build configurations against the previous build,
19# clean artifacts in TARGET_COMMON_OUT_ROOT if necessary.
20# If a package's resource overlay has been changed, its R class needs to be
21# regenerated.
22previous_package_overlay_config := $(TARGET_OUT_COMMON_INTERMEDIATES)/APPS/previous_overlays.txt
23current_package_overlay_config := $(TARGET_OUT_COMMON_INTERMEDIATES)/APPS/current_overlays.txt
24current_all_packages_config := $(dir $(current_package_overlay_config))current_packages.txt
25
26$(shell rm -rf $(current_package_overlay_config) \
27    && mkdir -p $(dir $(current_package_overlay_config)) \
28    && touch $(current_package_overlay_config))
29$(shell echo '$(PACKAGES)' > $(current_all_packages_config))
30$(foreach p, $(PACKAGES), $(if $(PACKAGES.$(p).RESOURCE_OVERLAYS), \
31  $(shell echo '$(p)' '$(PACKAGES.$(p).RESOURCE_OVERLAYS)' >> $(current_package_overlay_config))))
32
33ifneq (,$(wildcard $(previous_package_overlay_config)))
34packages_overlay_changed := $(shell build/tools/diff_package_overlays.py \
35    $(current_all_packages_config) $(current_package_overlay_config) \
36    $(previous_package_overlay_config))
37ifneq (,$(packages_overlay_changed))
38overlay_cleanup_cmd := $(strip rm -rf $(foreach p, $(packages_overlay_changed),\
39    $(TARGET_OUT_COMMON_INTERMEDIATES)/APPS/$(p)_intermediates))
40$(info *** Overlay change detected, clean shared intermediate files...)
41$(info *** $(overlay_cleanup_cmd))
42$(shell $(overlay_cleanup_cmd))
43overlay_cleanup_cmd :=
44endif
45packages_overlay_changed :=
46endif
47
48# Now current becomes previous.
49$(shell mv -f $(current_package_overlay_config) $(previous_package_overlay_config))
50
51previous_package_overlay_config :=
52current_package_overlay_config :=
53current_all_packages_config :=
54