--- a/utils.mk

+++ b/utils.mk

@@ -37,7 +37,7 @@ CXX                   ?= g++

 LD                    ?= ld

 AR                    ?= ar

 # only set these warnings if CFLAGS is unset

-CFLAGS                ?= -Wall

+CFLAGS                ?= -Wall $(LOCAL_CFLAGS)

 # always set these -f CFLAGS

 CFLAGS                += -fno-strict-aliasing -fno-omit-frame-pointer -Wformat=2

 CC_ONLY_CFLAGS        ?=