Provide numeric version defines
diff --git a/configure.in b/configure.in
index 34ece73..a0199d0 100644
--- a/configure.in
+++ b/configure.in
@@ -6,7 +6,7 @@
# License as published by the Free Software Foundation version 2.1
# of the License.
#
-# Copyright (c) 2003-2010 Thomas Graf <tgraf@suug.ch>
+# Copyright (c) 2003-2011 Thomas Graf <tgraf@suug.ch>
#
AC_INIT(libnl, 2.1, tgraf@suug.ch)
@@ -15,6 +15,11 @@
AM_INIT_AUTOMAKE([-Wall foreign subdir-objects])
m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES(yes)], [])
+MAJ_VERSION=2
+AC_SUBST([MAJ_VERSION])
+MIN_VERSION=1
+AC_SUBST([MIN_VERSION])
+
AC_PROG_CC
AM_PROG_CC_C_O
AC_PROG_INSTALL