File mdp-add_destdir.patch of Package mdp

diff --git a/Makefile.src b/Makefile.src
index a63ce08..faa3fdd 100644
--- a/Makefile.src
+++ b/Makefile.src
@@ -1,13 +1,15 @@
+DESTDIR=
+
 all: src/${PROG}
 
 src/${PROG}:
 	cd src/ && make
 
 install: src/${PROG}
-	install -d -m 755 ${PREFIX}/bin
-	install -m 755 src/${PROG} ${PREFIX}/bin
-	install -d -m 755 ${PREFIX}/${MANDEST}/man1
-	install -m 644 ${PROG}.1 ${PREFIX}/${MANDEST}/man1
+	install -d -m 755 $(DESTDIR)${PREFIX}/bin
+	install -m 755 src/${PROG} $(DESTDIR)${PREFIX}/bin
+	install -d -m 755 $(DESTDIR)${PREFIX}/${MANDEST}/man1
+	install -m 644 ${PROG}.1 $(DESTDIR)${PREFIX}/${MANDEST}/man1
 
 mantest:
 	nroff -man ${PROG}.1 | less -R