--- a/libbpf/src/Makefile
+++ b/libbpf/src/Makefile
@@ -25,6 +25,7 @@ ALL_CFLAGS := $(INCLUDES)
 
 SHARED_CFLAGS += -fPIC -fvisibility=hidden -DSHARED
 
+CFLAGS = $(EXTRA_CFLAGS)
 CFLAGS ?= -g -O2 -Werror -Wall -std=gnu89
 ALL_CFLAGS += $(CFLAGS) -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64
 ALL_LDFLAGS += $(LDFLAGS)