Index: configure.ac
===================================================================
--- configure.ac	(revision 22957)
+++ configure.ac	(working copy)
@@ -302,7 +302,8 @@
 AC_CHECK_HEADER([h323.h], [PBX_H323=1], [])
 AC_SUBST(PBX_H323)
 
-AC_CHECK_HEADER([linux/ixjuser.h], [PBX_IXJUSER=1],[PBX_IXJUSER=0])
+AC_CHECK_HEADER([linux/version.h], [LINUX_VERSION_HEADER=1], [LINUX_VERSION_HEADER=0])
+AC_CHECK_HEADER([linux/ixjuser.h], [PBX_IXJUSER=${LINUX_VERSION_HEADER}],[PBX_IXJUSER=0])
 AC_SUBST(PBX_IXJUSER)
 
 AC_ARG_WITH([vpb], AC_HELP_STRING([--with-vpb=PATH],[use vpb files in PATH]),[