echo 'Creating brew-patch.diff'
cat << EOF >> brew-patch.diff
diff --git a/Makefile.in b/Makefile.in
index c2d7e96..afec780 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -29,9 +29,10 @@ clean:
 	rm -rf *.o *.core core.* core

 install: bgpq3
+	if test ! -d @prefix@/bin ; then mkdir -p @prefix@/bin ; fi
 	${INSTALL} -c -s -m 755 bgpq3 @bindir@
-	if test ! -d @prefix@/man/man8 ; then mkdir -p @prefix@/man/man8 ; fi
-	${INSTALL} -m 644 bgpq3.8 @prefix@/man/man8
+	if test ! -d @mandir@/man8 ; then mkdir -p @mandir@/man8 ; fi
+	${INSTALL} -m 644 bgpq3.8 @mandir@/man8

 depend:
 	makedepend -- $(CFLAGS) -- $(SRCS)
EOF