$NetBSD$

--- Makefile.orig	2020-02-13 14:26:47.000000000 +0000
+++ Makefile
@@ -23,9 +23,10 @@ ${PROG}: ${SRC}
 	${CC} ${CFLAGS} ${PTHREADFLAGS} ${INCLUDEFLAGS} -o ${PROG} $< ${LINKFLAGS}
 
 install: ${PROG}
-	${INSTALL} -c -m 555 -o root -g bin ${PROG} ${BINDIR}
-	test -d ${MAN1DIR} || ${INSTALL} -d -o root ${MAN1DIR}
-	${INSTALL} -c -m 444 -o root -g bin ${MAN} ${MAN1DIR}
+	${INSTALL} -d ${DESTDIR}/${BINDIR}
+	${INSTALL} -c -m 555 ${PROG} ${DESTDIR}/${BINDIR}
+	${INSTALL} -d ${DESTDIR}/${MAN1DIR}
+	${INSTALL} -c -m 444 ${MAN} ${DESTDIR}/${MAN1DIR}
 
 clean:
 	-@rm -f ${PROG} *~ core *.core