Index: Makefile
--- Makefile.orig
+++ Makefile
@@ -54,7 +54,7 @@ cc-option = $(shell if $(CC) $(1) -c -x c /dev/null -o
 	      1>&2 2>/dev/null; then echo $(1); fi)
 
 override CFLAGS :=							\
-	-O2 -fomit-frame-pointer -std=c99 -I. -Wall -Wundef		\
+	-std=c99 -I. -Wall -Wundef					\
 	$(call cc-option,-Wpedantic)					\
 	$(call cc-option,-Wdeclaration-after-statement)			\
 	$(call cc-option,-Wmissing-prototypes)				\
