Support 32-bit volatiles.

Change-Id: If40ead8e13986d589ac1d1637034e25fc4108189
diff --git a/build/Android.executable.mk b/build/Android.executable.mk
index 2abb42a..1b2f41d 100644
--- a/build/Android.executable.mk
+++ b/build/Android.executable.mk
@@ -34,7 +34,11 @@
   endif
   LOCAL_MODULE_TAGS := optional
   LOCAL_SRC_FILES := $(2)
-  LOCAL_CFLAGS := $(ART_CFLAGS)
+  ifeq ($(3),target)
+    LOCAL_CFLAGS := $(ART_TARGET_CFLAGS)
+  else
+    LOCAL_CFLAGS := $(ART_HOST_CFLAGS)
+  endif
   ifeq ($(4),debug)
     LOCAL_CFLAGS += -UNDEBUG
   endif