Added AC_PREREQ(2.53) for autoconf

diff --git a/configure.in b/configure.in
index 566e3a6..d1ac494 100644 (file)
--- a/configure.in
+++ b/configure.in
@@ -1,4 +1,5 @@
 dnl Process this file with autoconf to produce a configure script.
+AC_PREREQ(2.53)
 AC_INIT(src/control/control.c)
 dnl *************************************************
 dnl current:revision:age