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Diffstat (limited to 'core/ccache.mk')
-rw-r--r-- | core/ccache.mk | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/core/ccache.mk b/core/ccache.mk new file mode 100644 index 0000000..34e5e1c --- /dev/null +++ b/core/ccache.mk @@ -0,0 +1,57 @@ +# +# 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. + export CCACHE_BASEDIR := / + + # Workaround for ccache with clang. + # See http://petereisentraut.blogspot.com/2011/09/ccache-and-clang-part-2.html + export CCACHE_CPP2 := true + + 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 + # 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 + ccache = + endif +endif |