--- configure.in
+++ configure.in
@@ -1261,6 +1261,7 @@ if test "x$glib_cv_va_val_copy" = "xno";
   AC_DEFINE(G_VA_COPY_AS_ARRAY,1, ['va_lists' cannot be copies as values])
 fi
 
+m4_ifdef([LT_OUTPUT], [LT_OUTPUT])
 dnl ***********************
 dnl *** g_module checks ***
 dnl ***********************