$NetBSD$

Honor DESTDIR and properly install the program and man page.

--- Makefile.orig	2015-11-24 05:05:00.000000000 +0000
+++ Makefile
@@ -3,6 +3,12 @@ version = 1.5.1
 tarname = $(package)
 distdir = $(tarname)-$(version)
 
+PREFIX?=	/usr
+MANDIR?=	${PREFIX}/share/man
+
+INSTALL_PROGRAM?=	install -m 755
+INSTALL_MAN?=		install -m 644
+
 all clean check nyancat:
 	cd src && $(MAKE) $@
 
@@ -33,7 +39,7 @@ distcheck: $(distdir).tar.gz
 	@echo "*** Package $(distdir).tar.gz is ready for distribution."
 
 install: all
-	install src/nyancat /usr/bin/${package}
-	gzip -9 -c < nyancat.1 > /usr/share/man/man1/nyancat.1.gz
+	${INSTALL_PROGRAM} src/nyancat ${DESTDIR}${PREFIX}/bin/${package}
+	${INSTALL_MAN} nyancat.1 ${DESTDIR}${MANDIR}/man1/nyancat.1
 
 .PHONY: FORCE all clean check dist distcheck install