--- Makefile.orig	2020-04-29 18:43:05 UTC
+++ Makefile
@@ -1,7 +1,7 @@
 # We assume X64 unless HH_POWER, HH_ARM, or HH_AARCH64 are defined.
 
 override CPPFLAGS += -I.
-override CXXFLAGS += -std=c++11 -Wall -O3 -fPIC -pthread
+override CXXFLAGS += -std=c++11 -Wall -fPIC -pthread
 override LDFLAGS += -pthread
 
 PREFIX ?= /usr/local