$OpenBSD: patch-src_Makefile,v 1.11 2019/02/26 20:14:23 benoit Exp $
--- src/Makefile.orig	Sun Feb 17 20:09:38 2019
+++ src/Makefile	Tue Feb 26 15:16:38 2019
@@ -113,8 +113,8 @@
 OPTIONS = -O3 -Wall
 endif
 
-CFLAGS = $(OPTIONS) $(SYS_CFLAGS)  $(EXTRA_CFLAGS) $(CONFIG)
-LDFLAGS =           $(SYS_LDFLAGS) $(EXTRA_LDFLAGS) -lm -lz
+CFLAGS += $(SYS_CFLAGS)  $(EXTRA_CFLAGS) $(CONFIG)
+LDFLAGS +=           $(SYS_LDFLAGS) $(EXTRA_LDFLAGS) -lm -lz
 
 
 SRCS =	main.c		\
