diff -r 868db5c1f2d7 -r 6b408af5467c configure.ac
--- a/configure.ac	Thu Aug 13 19:01:16 2009 +0100
+++ b/configure.ac	Thu Oct 01 20:38:39 2009 +0100
@@ -1,7 +1,7 @@
 #                                               -*- Autoconf -*-
 # Process this file with autoconf to produce a configure script.
 
-AC_INIT([plover],[0.2],[ali@juiblex.co.uk])
+AC_INIT([plover],[0.2.1],[ali@juiblex.co.uk])
 AC_PREREQ(2.59)
 AC_CONFIG_AUX_DIR([config])
 AC_CONFIG_SRCDIR([plover/plover.h])
@@ -34,6 +34,22 @@
     ;;
 esac
 
+# libtool versioning for libplover. For a release one of the following
+# must apply:
+#
+# - If interfaces have been changed or added, but binary compatibility has
+#   been preserved, increment CURRENT and AGE and set REVISION to 0.
+# - If binary compatibility has been broken (eg removed or changed interfaces),
+#   increment CURRENT and set AGE and REVISION to 0.
+# - If the interface is the same as the previous version, increment REVISION.
+#
+LT_CURRENT=0
+LT_REVISION=1
+LT_AGE=0
+AC_SUBST(LT_CURRENT)
+AC_SUBST(LT_REVISION)
+AC_SUBST(LT_AGE)
+
 ##################################################
 # Checks for programs.
 ##################################################