diff --git a/configure.ac b/configure.ac
index d42b71c..d2d06c0 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,6 +1,11 @@
+# Versioning.
+m4_define([dc_version_major],[0])
+m4_define([dc_version_minor],[0])
+m4_define([dc_version_micro],[0])
+
 # Initialize autoconf.
 AC_PREREQ([2.60])
-AC_INIT([libdivecomputer], [0.1])
+AC_INIT([libdivecomputer],[dc_version_major.dc_version_minor.dc_version_micro])
 AC_CONFIG_SRCDIR([config.h.in])
 AC_CONFIG_HEADERS([config.h])
 
@@ -52,10 +57,16 @@ AM_CONDITIONAL([IRDA], [test "$irda_win32" = "yes" || test "$irda_linux" = "yes"
 # Checks for library functions.
 AC_CHECK_FUNCS([localtime_r gmtime_r])
 
+# Versioning.
+AC_SUBST([DC_VERSION_MAJOR],[dc_version_major])
+AC_SUBST([DC_VERSION_MINOR],[dc_version_minor])
+AC_SUBST([DC_VERSION_MICRO],[dc_version_micro])
+
 AC_CONFIG_FILES([
    libdivecomputer.pc
    Makefile
    src/Makefile
+   src/version.h
    examples/Makefile
 ])
 AC_OUTPUT
diff --git a/src/Makefile.am b/src/Makefile.am
index a10ba70..bf7e293 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -4,6 +4,7 @@
 
 libdivecomputerdir = $(includedir)/libdivecomputer
 libdivecomputer_HEADERS = 	\
+	version.h \
 	utils.h \
 	buffer.h \
 	device.h \
diff --git a/src/version.h.in b/src/version.h.in
new file mode 100644
index 0000000..e45aa7b
--- /dev/null
+++ b/src/version.h.in
@@ -0,0 +1,37 @@
+/*
+ * libdivecomputer
+ *
+ * Copyright (C) 2010 Jef Driesen
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+ * MA 02110-1301 USA
+ */
+
+#ifndef DC_VERSION_H
+#define DC_VERSION_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif /* __cplusplus */
+
+#define DC_VERSION_MAJOR @DC_VERSION_MAJOR@
+#define DC_VERSION_MINOR @DC_VERSION_MINOR@
+#define DC_VERSION_MICRO @DC_VERSION_MICRO@
+
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+
+#endif /* DC_VERSION_H */