-#serial 11
-
-# Define m4_ifblank and m4_ifnblank macros from introduced in
-# autotools 2.64 m4sugar.m4 if using an earlier autotools.
-
-ifdef([m4_ifblank], [], [
-m4_define([m4_ifblank],
-[m4_if(m4_translit([[$1]], [ ][ ][
-]), [], [$2], [$3])])
-])
-
-
-ifdef([m4_ifnblank], [], [
-m4_define([m4_ifnblank],
-[m4_if(m4_translit([[$1]], [ ][ ][
-]), [], [$3], [$2])])
-])