github.com/westcoastroms/westcoastroms-build@v0.0.0-20190928114312-2350e5a73030/build/make/core/ccache.mk (about)

     1  #
     2  # Copyright (C) 2015 The Android Open Source Project
     3  #
     4  # Licensed under the Apache License, Version 2.0 (the "License");
     5  # you may not use this file except in compliance with the License.
     6  # You may obtain a copy of the License at
     7  #
     8  #      http://www.apache.org/licenses/LICENSE-2.0
     9  #
    10  # Unless required by applicable law or agreed to in writing, software
    11  # distributed under the License is distributed on an "AS IS" BASIS,
    12  # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13  # See the License for the specific language governing permissions and
    14  # limitations under the License.
    15  #
    16  
    17  ifneq ($(filter-out false,$(USE_CCACHE)),)
    18    # The default check uses size and modification time, causing false misses
    19    # since the mtime depends when the repo was checked out
    20    export CCACHE_COMPILERCHECK ?= content
    21  
    22    # See man page, optimizations to get more cache hits
    23    # implies that __DATE__ and __TIME__ are not critical for functionality.
    24    # Ignore include file modification time since it will depend on when
    25    # the repo was checked out
    26    export CCACHE_SLOPPINESS := time_macros,include_file_mtime,file_macro
    27  
    28    # Turn all preprocessor absolute paths into relative paths.
    29    # Fixes absolute paths in preprocessed source due to use of -g.
    30    # We don't really use system headers much so the rootdir is
    31    # fine; ensures these paths are relative for all Android trees
    32    # on a workstation.
    33    export CCACHE_BASEDIR := /
    34  
    35    # Workaround for ccache with clang.
    36    # See http://petereisentraut.blogspot.com/2011/09/ccache-and-clang-part-2.html
    37    export CCACHE_CPP2 := true
    38  
    39    CCACHE_HOST_TAG := $(HOST_PREBUILT_TAG)
    40    ccache := prebuilts/misc/$(CCACHE_HOST_TAG)/ccache/ccache
    41    # Check that the executable is here.
    42    ccache := $(strip $(wildcard $(ccache)))
    43    ifdef ccache
    44      ifndef CC_WRAPPER
    45        CC_WRAPPER := $(ccache)
    46      endif
    47      ifndef CXX_WRAPPER
    48        CXX_WRAPPER := $(ccache)
    49      endif
    50      ccache =
    51    endif
    52  endif