--- configure.ac.orig	2017-01-22 02:35:42 UTC
+++ configure.ac
@@ -1225,7 +1225,8 @@ if test "$MAKEINFO" != "no"; then
     MAKEINFO=makeinfo
   fi
   case `($MAKEINFO --version) 2>/dev/null` in
-    *' (GNU texinfo) '4.1[[3-9]]* | \
+    *' (GNU texinfo) '4.[[8-9]]* | \  
+    *' (GNU texinfo) '4.1[[0-9]]* | \
     *' (GNU texinfo) '[[5-9]]* | \
     *' (GNU texinfo) '[[1-9][0-9]]* ) ;;
     *) MAKEINFO=no;;