diff --git a/core/combo/select.mk b/core/combo/select.mk index 803cfc02c..e485d00e2 100644 --- a/core/combo/select.mk +++ b/core/combo/select.mk @@ -60,6 +60,23 @@ $(combo_target)STATIC_LIB_SUFFIX := .a include $(BUILD_COMBOS)/$(combo_target)$(combo_os_arch).mk ifneq ($(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 := / + CCACHE_HOST_TAG := $(HOST_PREBUILT_TAG) # If we are cross-compiling Windows binaries on Linux # then use the linux ccache binary instead.