Fix FTBFS on kfreebsd (#581)

kfreebsd is a FreeBSD kernel and a GNU libc

The only macro defined in that case is __FreeBSD_kernel__

Fix #580

diff --git a/lib/mount_util.c b/lib/mount_util.c
index f1d23255bda54997c5dfeb6590b0f369ce3aa1f4..35e994838472301a32f8c20af2c7cfba31a2b6ad 100644 (file)
--- a/lib/mount_util.c
+++ b/lib/mount_util.c
@@ -30,7 +30,7 @@
 #include <sys/mount.h>
 #include <sys/param.h>
 
-#if defined(__NetBSD__) || defined(__FreeBSD__) || defined(__DragonFly__)
+#if defined(__NetBSD__) || defined(__FreeBSD__) || defined(__DragonFly__) || defined(__FreeBSD_kernel__)
 #define umount2(mnt, flags) unmount(mnt, ((flags) == 2) ? MNT_FORCE : 0)
 #endif