-GTKMATHVIEW_BONOBO_VERSION_INFO=`echo $VERSION | awk -F. '{ printf "%d:%d:%d", $1+$2, $3, $2 }'`
-AC_SUBST(GTKMATHVIEW_BONOBO_VERSION_INFO)
+GTKMATHVIEW_CONTROL_VERSION_INFO=`echo $VERSION | awk -F. '{ printf "%d:%d:%d", $1+$2, $3, $2 }'`
+AC_SUBST(GTKMATHVIEW_CONTROL_VERSION_INFO)
+
+GTKMATHVIEW_API_VERSION="1.0"
+AC_SUBST(GTKMATHVIEW_API_VERSION)
+AC_DEFINE_UNQUOTED(MATH_VIEW_API_VERSION, "$GTKMATHVIEW_API_VERSION", [Version number of the API implemented])