$NetBSD: patch-Makefile,v 1.1 2023/09/04 10:32:47 vins Exp $

* DESTDIR support. 
* Link against libasr. 

--- Makefile.orig	2019-10-22 10:52:02.000000000 +0000
+++ Makefile
@@ -2,8 +2,8 @@ LOCALBASE?= /usr/local/
 
 PROG=	filter-dnsbl
 MAN=	filter-dnsbl.8
-BINDIR=	${LOCALBASE}/libexec/smtpd/
-MANDIR=	${LOCALBASE}/man/man
+BINDIR?=	${LOCALBASE}/libexec/smtpd/
+MANDIR?=	${LOCALBASE}/man/man
 
 SRCS+=	main.c
 
@@ -14,7 +14,7 @@ CFLAGS+=-Wmissing-declarations
 CFLAGS+=-Wshadow -Wpointer-arith -Wcast-qual
 CFLAGS+=-Wsign-compare
 LDFLAGS+=-L${LOCALBASE}/lib
-LDADD+=	-levent -lopensmtpd
+LDADD+=	-lasr -levent -lopensmtpd
 DPADD=	${LIBEVENT}
 
 bindir: