[automerger] Add some error/overflow checks in codebook handling am: 6eb63e1192 am: bc4bde3bee am: 632704bab3 am: 9cea7b942e am: 57035e3928

Change-Id: I43a1ac97a52b8c3cb6df55efde357e3a5ba2889d
diff --git a/Android.mk b/Android.mk
index 1fb89e0..6bc8514 100644
--- a/Android.mk
+++ b/Android.mk
@@ -32,7 +32,7 @@
 LOCAL_CFLAGS_x86 += -DONLY_C
 LOCAL_CFLAGS_x86_64 += -DONLY_C
 
-LOCAL_CFLAGS+= -O2 -funsigned-char
+LOCAL_CFLAGS += -O2 -D_GNU_SOURCE -funsigned-char
 
 LOCAL_C_INCLUDES:= \
 	$(LOCAL_PATH)/Tremolo