From 31c984dd6904a11b655879b3ad927bd9bf639192 Mon Sep 17 00:00:00 2001
From: Denys Vlasenko <vda.linux@googlemail.com>
Date: Mon, 28 Mar 2016 22:23:33 +0200
Subject: [PATCH] umount: build fix for older glibc

Based on a patch by Veli-Pekka Peltola <veli-pekka.peltola@ray.fi>

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
---
 util-linux/umount.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/util-linux/umount.c b/util-linux/umount.c
index 00910977d..30bef1686 100644
--- a/util-linux/umount.c
+++ b/util-linux/umount.c
@@ -30,6 +30,9 @@
 
 #include <mntent.h>
 #include <sys/mount.h>
+#ifndef MNT_DETACH
+# define MNT_DETACH 0x00000002
+#endif
 #include "libbb.h"
 
 #if defined(__dietlibc__)