--- tr-6.7/Makefile.orig	Sun May 10 10:31:10 2020
+++ tr-6.7/Makefile	Sun May 10 10:31:45 2020
@@ -6,5 +6,9 @@
 all: ${OBJS}
 	${CC} ${LDFLAGS} -o ${PROG} ${OBJS} -L/usr/local/lib -lpuffy
 
+install:
+	install -c -m 755 tr ${DESTDIR}/usr/local/bin
+	install -c -m 644 tr.1 ${DESTDIR}/usr/local/share/man/man1
+
 clean:
 	rm -f ${PROG} ${OBJS}