--- mqtt/configure.in	2013/01/18 09:45:34	1.3.2.1
+++ mqtt/configure.in	2017/10/08 22:50:40	1.4.2.1
@@ -1,10 +1,13 @@
 #
 # $Author: misho $
-# $Id: configure.in,v 1.3.2.1 2013/01/18 09:45:34 misho Exp $
+# $Id: configure.in,v 1.4.2.1 2017/10/08 22:50:40 misho Exp $
 #
-AC_INIT(mqtt, 2.0, misho@elwix.org)
+AC_INIT(mqtt, 2.1, misho@elwix.org)
 AC_CONFIG_HEADERS(inc/config.h)
 AC_CONFIG_SRCDIR(src/mqttd.c)
+
+ac_cv_func_malloc_0_nonnull="yes"
+ac_cv_func_realloc_0_nonnull="yes"
 
 # Checks for programs.
 AC_PROG_CC