--- bird-1.3.2.orig/sysdep/linux/syspriv.h	2011-07-10 11:58:51.000000000 +0200
+++ bird-1.3.2/sysdep/linux/syspriv.h	2011-07-21 13:50:12.000000000 +0200
@@ -2,6 +2,10 @@
 #include <sys/prctl.h>
 #include <linux/capability.h>
 
+#ifndef CAP_TO_MASK(
+#define CAP_TO_MASK(x) (1 << (x))
+#endif
+
 #ifndef _LINUX_CAPABILITY_VERSION_3
 #define _LINUX_CAPABILITY_VERSION_3  0x20080522
 #define _LINUX_CAPABILITY_U32S_3     2