71004f8135
This change cleans the packages' intermediate files if their overlays changed between incremental builds. If two builds have different overlay, they will have different R classes, and so the jar files in the common intermediate dirs can not be shared. Therefore incremental build can't be applied. This change detects the overlay changes on package's base. If a package's overlay is different from the previous build, its common intermediate dir is nuked. This makes broader incremental builds possible. Change-Id: I368610ebbbbc85a80f9aecd714ab22cd78da7f12
53 lines
2.4 KiB
Makefile
53 lines
2.4 KiB
Makefile
# Copyright (C) 2012 The Android Open Source Project
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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# Clean steps that need global knowledge of individual modules.
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# This file must be included after all Android.mks have been loaded.
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# Checks the current build configurations against the previous build,
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# clean artifacts in TARGET_COMMON_OUT_ROOT if necessary.
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# If a package's resource overlay has been changed, its R class needs to be
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# regenerated.
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previous_package_overlay_config := $(TARGET_OUT_COMMON_INTERMEDIATES)/APPS/previous_overlays.txt
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current_package_overlay_config := $(TARGET_OUT_COMMON_INTERMEDIATES)/APPS/current_overlays.txt
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current_all_packages_config := $(dir $(current_package_overlay_config))current_packages.txt
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$(shell rm -rf $(current_package_overlay_config) \
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&& mkdir -p $(dir $(current_package_overlay_config)) \
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&& touch $(current_package_overlay_config))
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$(shell echo '$(PACKAGES)' > $(current_all_packages_config))
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$(foreach p, $(PACKAGES), $(if $(PACKAGES.$(p).RESOURCE_OVERLAYS), \
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$(shell echo '$(p)' '$(PACKAGES.$(p).RESOURCE_OVERLAYS)' >> $(current_package_overlay_config))))
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ifneq (,$(wildcard $(previous_package_overlay_config)))
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packages_overlay_changed := $(shell build/tools/diff_package_overlays.py \
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$(current_all_packages_config) $(current_package_overlay_config) \
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$(previous_package_overlay_config))
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ifneq (,$(packages_overlay_changed))
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overlay_cleanup_cmd := $(strip rm -rf $(foreach p, $(packages_overlay_changed),\
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$(TARGET_OUT_COMMON_INTERMEDIATES)/APPS/$(p)_intermediates))
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$(info *** Overlay change detected, clean shared intermediate files...)
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$(info *** $(overlay_cleanup_cmd))
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$(shell $(overlay_cleanup_cmd))
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overlay_cleanup_cmd :=
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endif
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packages_overlay_changed :=
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endif
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# Now current becomes previous.
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$(shell mv -f $(current_package_overlay_config) $(previous_package_overlay_config))
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previous_package_overlay_config :=
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current_package_overlay_config :=
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current_all_packages_config :=
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