--- Makefile.in
+++ Makefile.in
@@ -37,12 +37,12 @@
 mandir	=	@mandir@
 BINDIR	=	$(bindir)
 MANDIR	=	$(mandir)
+DESTDIR =
 #
-# install program. use our own, as AC_PROG_INSTALL doesn't work reliably
-#
-INSTALL	=		@srcdir@/install-sh
-INSTALL_PROGRAM =	${INSTALL} -c
-INSTALL_DATA =		${INSTALL} -c -m 644
+INSTALL = @INSTALL@
+INSTALL_PROGRAM = @INSTALL_PROGRAM@
+INSTALL_DATA = @INSTALL_DATA@
+INSTALL_SCRIPT = @INSTALL_SCRIPT@
 #
 # If you don't have the GNU C compiler installed, set CC=cc here
 #
@@ -183,23 +183,17 @@
 
 install: 		$(DOINST)
 	-for d in $(MPAGES) ; do \
-		$(INSTALL_DATA) $(srcdir)/man/$$d $(MANDIR)/man1/$$d ; \
+		$(INSTALL_DATA) $(srcdir)/man/$$d $(DESTDIR)$(MANDIR)/man1/$$d ; \
 	done
 
 install-uudeview:	uudeview
-	for d in uudeview uuenview ; do \
-		$(INSTALL_PROGRAM) unix/$$d $(BINDIR)/$$d ; \
-	done
+	(cd unix && $(MAKE) install)
 
 install-tcl:		xdeview
-	for d in xdeview uuwish ; do \
-		$(INSTALL_PROGRAM) tcl/$$d $(BINDIR)/$$d ; \
-	done
+	(cd tcl && $(MAKE) install)
 
 install-minews:		minews
-	for d in minews ; do \
-		$(INSTALL_PROGRAM) inews/$$d $(BINDIR)/$$d ; \
-	done
+	(cd inews && $(MAKE) install)
 
 links:		tcl/config.h unix/config.h uulib/config.h