diff --git a/hxtools-fix-clone.patch b/hxtools-fix-clone.patch
new file mode 100644
index 0000000..f29ac72
--- /dev/null
+++ b/hxtools-fix-clone.patch
@@ -0,0 +1,12 @@
+Index: hxtools-20110721/sadmin/newns.c
+===================================================================
+--- hxtools-20110721.orig/sadmin/newns.c
++++ hxtools-20110721/sadmin/newns.c
+@@ -2,6 +2,7 @@
+  *	newns - start a new mount namespace
+  *	released in the Public Domain
+  */
++#define _GNU_SOURCE 1
+ #include <sys/types.h>
+ #include <sys/wait.h>
+ #include <sched.h>
diff --git a/hxtools.changes b/hxtools.changes
index a3c6b3a..ce21239 100644
--- a/hxtools.changes
+++ b/hxtools.changes
@@ -1,3 +1,9 @@
+-------------------------------------------------------------------
+Mon Aug 29 11:31:52 UTC 2011 - aj@suse.de
+
+- clone needs _GNU_SOURCE defined to be visible (patch
+  hxtools-fix-clone.patch)
+
 -------------------------------------------------------------------
 Thu Jul 21 14:52:09 UTC 2011 - jengelh@medozas.de
 
diff --git a/hxtools.spec b/hxtools.spec
index a4b8d6f..9869d9e 100644
--- a/hxtools.spec
+++ b/hxtools.spec
@@ -26,6 +26,7 @@ Summary:        Collection of day-to-day tools (binaries)
 
 Source:         %name-%version.tar.xz
 Source2:        %name-%version.tar.xz.asc
+Patch1:         hxtools-fix-clone.patch
 License:        GPL,PD
 # freetype2, xorg-x11 for "bdftopcf"
 BuildRequires:  freetype2 libHX-devel >= 3.4 libcap-devel
@@ -119,6 +120,7 @@ only important parts of a path.
 
 %prep
 %setup -q
+%patch1 -p1
 
 %build
 %configure \