Almost all warnings are now errors in RS build.

Change-Id: Ie22eccdafbc95d1f903c73007dd3fb0ad10af7cc
diff --git a/Android.mk b/Android.mk
index 5ab4804..0836887 100644
--- a/Android.mk
+++ b/Android.mk
@@ -124,6 +124,8 @@
 LOCAL_C_INCLUDES += external/freetype/include external/zlib dalvik
 LOCAL_C_INCLUDES += frameworks/compile/libbcc/include
 
+LOCAL_CFLAGS += -Werror -Wall -Wno-unused-parameter -Wno-unused-variable
+
 LOCAL_LDLIBS := -lpthread -ldl
 LOCAL_MODULE:= libRS
 LOCAL_MODULE_TAGS := optional
@@ -132,6 +134,7 @@
 
 # Now build a host version for serialization
 include $(CLEAR_VARS)
+LOCAL_CFLAGS += -Werror -Wall -Wno-unused-parameter -Wno-unused-variable
 LOCAL_CFLAGS += -DANDROID_RS_SERIALIZE
 
 LOCAL_SRC_FILES:= \