--- Makefile.orig	2022-01-20 13:07:59 UTC
+++ Makefile
@@ -1,5 +1,5 @@
 CC=c99
-CFLAGS=$(RLCFLAGS) $(INTLCFLAGS) $(LZMACFLAGS) -O3 -DLOCALEDIR=\"$(LOCALEDIR)\" -g
+CFLAGS+=$(RLCFLAGS) $(INTLCFLAGS) $(LZMACFLAGS) -DLOCALEDIR=\"$(LOCALEDIR)\"
 
 # for libedit support on FreeBSD
 #RLCFLAGS=-I/usr/include/edit