1# Copyright (C) 2015 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# Check to see if we need to force proguard to re-run, typically after using tapas to 16# switch to/from eng builds. This is determined by comparing the flag files used in the previous 17# build. If the flag files have changed, proguard is rerun. 18 19# If the LOCAL_MODULE being setup isn't a build target, then don't run ForceProguard. 20ifneq (,$(findstring $(LOCAL_MODULE), $(TARGET_BUILD_APPS))) 21 22PREVIOUS_FLAG_FILES_USED_DIR := $(call local-intermediates-dir,1) 23 24# If the local intermediates dir doesn't exist, ForceProguard won't work. 25ifneq ($(wildcard $(PREVIOUS_FLAG_FILES_USED_DIR)),) 26PREVIOUS_FLAG_FILES_USED_FILE := $(PREVIOUS_FLAG_FILES_USED_DIR)/previous_proguard_flag_files 27PREVIOUS_FLAG_FILES_USED := $(if $(wildcard $(PREVIOUS_FLAG_FILES_USED_FILE)), \ 28 $(shell cat $(PREVIOUS_FLAG_FILES_USED_FILE))) 29 30ifneq ($(strip $(PREVIOUS_FLAG_FILES_USED)), $(strip $(LOCAL_PROGUARD_FLAG_FILES))) 31$(info *** Flag files used for proguard have changed; forcing proguard to rerun.) 32$(shell touch $(LOCAL_PATH)/proguard.flags) 33$(shell echo $(LOCAL_PROGUARD_FLAG_FILES) > $(PREVIOUS_FLAG_FILES_USED_FILE)) 34endif 35 36endif 37# End local intermediates directory existence check 38 39endif 40# End LOCAL_MODULE is a build target check 41