am b2b42bcd: am 2f32c04d: am d77d8906: am 6020d698: Merge "select.mk: Tune ccache options"
* commit 'b2b42bcd546ec6a36bb464cf53ef35e8d084bb52':
select.mk: Tune ccache options
diff --git a/core/combo/select.mk b/core/combo/select.mk
index 803cfc0..e485d00 100644
--- a/core/combo/select.mk
+++ b/core/combo/select.mk
@@ -60,6 +60,23 @@
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.