Disable darwin build

Change-Id: Ie72bbaab8604cdc14082859b735458a2f73c3074
diff --git a/libcorkscrew/Android.mk b/libcorkscrew/Android.mk
index 20c48c3..25512e2 100644
--- a/libcorkscrew/Android.mk
+++ b/libcorkscrew/Android.mk
@@ -67,7 +67,9 @@
 include $(BUILD_EXECUTABLE)
 
 
-ifeq ($(HOST_ARCH),x86)
+# TODO: reenable darwin-x86
+# ifeq ($(HOST_ARCH),x86)
+ifeq ($(HOST_OS)-$(HOST_ARCH),linux-x86)
 
 # Build libcorkscrew.
 include $(CLEAR_VARS)