diff -up ./configure.in.orig ./configure.in
--- ./configure.in.orig	2015-05-01 16:18:46.000000000 +0200
+++ ./configure.in	2015-05-01 16:19:59.047858458 +0200
@@ -64,7 +64,7 @@ AC_PROG_CC
 AC_DISABLE_STATIC
 AM_PROG_LIBTOOL
 # end of SCO fixes
-AM_INIT_AUTOMAKE(Serial,2.2pre1)
+AM_INIT_AUTOMAKE(Serial,2.2pre2)
 AC_CHECK_HEADERS(fcntl.h)
 AC_CHECK_HEADERS(sys/fcntl.h)
 AC_CHECK_HEADERS(sys/file.h)