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#
# Copyright (C) 2015 The Android Open Source Project
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
ifneq ($(USE_CCACHE),)
# The default check uses size and modification time, causing false misses
# since the mtime depends when the repo was checked out
export CCACHE_COMPILERCHECK := content
# See man page, optimizations to get more cache hits
# implies that __DATE__ and __TIME__ are not critical for functionality.
# Ignore include file modification time since it will depend on when
# the repo was checked out
export CCACHE_SLOPPINESS := time_macros,include_file_mtime,file_macro
# Turn all preprocessor absolute paths into relative paths.
# Fixes absolute paths in preprocessed source due to use of -g.
# We don't really use system headers much so the rootdir is
# fine; ensures these paths are relative for all Android trees
# on a workstation.
ifeq ($(CCACHE_BASEDIR),)
export CCACHE_BASEDIR := $(ANDROID_BUILD_TOP)
endif
# Workaround for ccache with clang.
# See http://petereisentraut.blogspot.com/2011/09/ccache-and-clang-part-2.html
export CCACHE_CPP2 := true
# Detect if the system already has ccache installed to use instead of the prebuilt
ccache := $(shell which ccache)
ifeq ($(ccache),)
CCACHE_HOST_TAG := $(HOST_PREBUILT_TAG)
# If we are cross-compiling Windows binaries on Linux
# then use the linux ccache binary instead.
ifeq ($(HOST_OS)-$(BUILD_OS),windows-linux)
CCACHE_HOST_TAG := linux-$(HOST_PREBUILT_ARCH)
endif
ccache := prebuilts/misc/$(CCACHE_HOST_TAG)/ccache/ccache
endif
# Check that the executable is here.
ccache := $(strip $(wildcard $(ccache)))
ifdef ccache
ifndef CC_WRAPPER
CC_WRAPPER := $(ccache)
endif
ifndef CXX_WRAPPER
CXX_WRAPPER := $(ccache)
endif
ifeq ($(ANDROID_CCACHE_DIR), $(CCACHE_DIR))
ifneq ($(ANDROID_CCACHE_SIZE),)
ACCSIZE_RESULT := $(shell $(ccache) -M$(ANDROID_CCACHE_SIZE))
endif
endif
ccache =
ACCSIZE_RESULT =
endif
endif
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