-# CFLAGS = -std=gnu99 -g -O0 $(WARNINGS) # Use this line to make debugging easier
-CFLAGS = -std=gnu99 -g -O2 $(WARNINGS) # Use this line to get better performance
+# CFLAGS = -std=gnu99 -g -O0 $(WARNINGS) $(EXTRA_CFLAGS) # Use this line to make debugging easier
+CFLAGS = -std=gnu99 -g -O2 $(WARNINGS) $(EXTRA_CFLAGS) # Use this line to get better performance