$NetBSD$

--- src/dps8/Makefile.orig	2019-08-27 18:08:20.000000000 +0000
+++ src/dps8/Makefile
@@ -20,7 +20,9 @@ all :
 
 SIMHx = ../simh-master
 
-INSTALL_ROOT ?= /usr/local/
+DESTDIR ?=
+PREFIX ?= /usr/local
+INSTALL_ROOT ?= $(DESTDIR)$(PREFIX)
 INSTALL_BIN ?= $(INSTALL_ROOT)/bin
 
 
@@ -270,6 +272,7 @@ all: utils $(TAGS) locallibs_then_dps8
 #	$(CC) remote.c -o remote fnp_udplib.o
 
 install: all
+	install -d $(INSTALL_BIN)
 	cp dps8$(EXE) $(INSTALL_BIN)/dps8$(EXE)
 
 cscope:
