Allow win_sdk build with USE_CCACHE=1
This patch allows the Window sdk build (lunch sdk-eng; make win_sdk)
to work properly when USE_CCACHE is defined in the environment.
There is no Windows ccache prebuilt, but since we're cross-compiling
from Linux, detect it and use the linux prebuilt binary instead.
Note: Depends on https://review.source.android.com//#change,21755
for a complete solution to the problem.
Change-Id: I0b1b59efae86ee7114225258c9ecf9f257913347
diff --git a/core/combo/select.mk b/core/combo/select.mk
index c886342..d486255 100644
--- a/core/combo/select.mk
+++ b/core/combo/select.mk
@@ -62,13 +62,23 @@
include $(BUILD_COMBOS)/$(combo_target)$(combo_os_arch).mk
ifneq ($(USE_CCACHE),)
- ccache := prebuilt/$(HOST_PREBUILT_TAG)/ccache/ccache
- # prepend ccache if necessary
- ifneq ($(ccache),$(firstword $($(combo_target)CC)))
- $(combo_target)CC := $(ccache) $($(combo_target)CC)
+ 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)-$(BUILD_OS),windows-linux)
+ CCACHE_HOST_TAG := linux-$(BUILD_ARCH)
endif
- ifneq ($(ccache),$(firstword $($(combo_target)CXX)))
- $(combo_target)CXX := $(ccache) $($(combo_target)CXX)
+ ccache := prebuilt/$(CCACHE_HOST_TAG)/ccache/ccache
+ # Check that the executable is here.
+ ccache := $(strip $(wildcard $(ccache)))
+ ifdef ccache
+ # prepend ccache if necessary
+ ifneq ($(ccache),$(firstword $($(combo_target)CC)))
+ $(combo_target)CC := $(ccache) $($(combo_target)CC)
+ endif
+ ifneq ($(ccache),$(firstword $($(combo_target)CXX)))
+ $(combo_target)CXX := $(ccache) $($(combo_target)CXX)
+ endif
+ ccache =
endif
- ccache =
endif