diff --git a/CMakeLists.txt b/CMakeLists.txt
index e502aa0a6..667421266 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -31,7 +31,7 @@ PROJECT(OpenSceneGraph)
 SET(OPENSCENEGRAPH_MAJOR_VERSION 2)
 SET(OPENSCENEGRAPH_MINOR_VERSION 9)
 SET(OPENSCENEGRAPH_PATCH_VERSION 6)
-SET(OPENSCENEGRAPH_SOVERSION 61)
+SET(OPENSCENEGRAPH_SOVERSION 62)
 
 # set to 0 when not a release candidate, non zero means that any generated 
 # svn tags will be treated as release candidates of given number
@@ -312,6 +312,11 @@ OPTION(OSG_CPP_EXCEPTIONS_AVAILABLE "Set to OFF to disable compile of OSG compon
 SET(OPENSCENEGRAPH_CONFIG_HEADER "${PROJECT_BINARY_DIR}/include/osg/Config")
 CONFIGURE_FILE("${CMAKE_CURRENT_SOURCE_DIR}/src/osg/Config.in"
                "${OPENSCENEGRAPH_CONFIG_HEADER}")
+
+SET(OPENSCENEGRAPH_VERSION_HEADER "${PROJECT_BINARY_DIR}/include/osg/Version")
+CONFIGURE_FILE("${CMAKE_CURRENT_SOURCE_DIR}/src/osg/Version.in"
+               "${OPENSCENEGRAPH_VERSION_HEADER}")
+
 # INSTALL_FILES(/include/osg/ FILES "${OPENSCENEGRAPH_CONFIG_HEADER}")
 
 
diff --git a/include/osg/Version b/include/osg/Version
index 838e4cd9a..00c32c57b 100644
--- a/include/osg/Version
+++ b/include/osg/Version
@@ -1,13 +1,13 @@
-/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2006 Robert Osfield 
+/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2009 Robert Osfield
  *
- * This library is open source and may be redistributed and/or modified under  
- * the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or 
+ * This library is open source and may be redistributed and/or modified under
+ * the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or
  * (at your option) any later version.  The full license is in LICENSE file
  * included with this distribution, and on the openscenegraph.org website.
- * 
+ *
  * 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 
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  * OpenSceneGraph Public License for more details.
 */
 
@@ -18,7 +18,6 @@
 
 extern "C" {
 
-
 #define OPENSCENEGRAPH_MAJOR_VERSION    2
 #define OPENSCENEGRAPH_MINOR_VERSION    9
 #define OPENSCENEGRAPH_PATCH_VERSION    6
diff --git a/src/osg/CMakeLists.txt b/src/osg/CMakeLists.txt
index a8b4cbe95..794d742d6 100644
--- a/src/osg/CMakeLists.txt
+++ b/src/osg/CMakeLists.txt
@@ -37,6 +37,7 @@ SET(LIB_PUBLIC_HEADERS
     ${HEADER_PATH}/BoundsChecking
     ${HEADER_PATH}/buffered_value
     ${HEADER_PATH}/BufferObject
+    ${HEADER_PATH}/Config
     ${HEADER_PATH}/Camera
     ${HEADER_PATH}/CameraNode
     ${HEADER_PATH}/CameraView
diff --git a/src/osg/Config.in b/src/osg/Config.in
index f1178ff0d..d8df6439f 100644
--- a/src/osg/Config.in
+++ b/src/osg/Config.in
@@ -1,4 +1,4 @@
-/* -*-c++-*- OpenSceneGraph - Copyright (C) 2008 Robert Osfield 
+/* -*-c++-*- OpenSceneGraph - Copyright (C) 2008-2009 Robert Osfield
  *
  * This library is open source and may be redistributed and/or modified under  
  * the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or 
diff --git a/src/osg/Version.in b/src/osg/Version.in
new file mode 100644
index 000000000..cb3a71d37
--- /dev/null
+++ b/src/osg/Version.in
@@ -0,0 +1,73 @@
+/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2009 Robert Osfield
+ *
+ * This library is open source and may be redistributed and/or modified under
+ * the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or
+ * (at your option) any later version.  The full license is in LICENSE file
+ * included with this distribution, and on the openscenegraph.org website.
+ *
+ * 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
+ * OpenSceneGraph Public License for more details.
+*/
+
+#ifndef OSG_VERSION
+#define OSG_VERSION 1
+
+#include <osg/Export>
+
+extern "C" {
+
+#define OPENSCENEGRAPH_MAJOR_VERSION    @OPENSCENEGRAPH_MAJOR_VERSION@
+#define OPENSCENEGRAPH_MINOR_VERSION    @OPENSCENEGRAPH_MINOR_VERSION@
+#define OPENSCENEGRAPH_PATCH_VERSION    @OPENSCENEGRAPH_PATCH_VERSION@
+#define OPENSCENEGRAPH_SOVERSION        @OPENSCENEGRAPH_SOVERSION@
+
+/* convinience macro that can be used to decide whether a feature is present or not i.e.
+ * #if OSG_MIN_VERSION_REQUIRED(2,9,5)
+ *    your code here
+ * #endif
+ */
+#define OSG_MIN_VERSION_REQUIRED(MAJOR, MINOR, PATCH) ((OPENSCENEGRAPH_MAJOR_VERSION>MAJOR) || (OPENSCENEGRAPH_MAJOR_VERSION==MAJOR && (OPENSCENEGRAPH_MINOR_VERSION>MINOR || (OPENSCENEGRAPH_MINOR_VERSION==MINOR && OPENSCENEGRAPH_PATCH_VERSION>=PATCH))))
+#define OSG_VERSION_LESS_THAN(MAJOR, MINOR, PATCH) ((OPENSCENEGRAPH_MAJOR_VERSION<MAJOR) || (OPENSCENEGRAPH_MAJOR_VERSION==MAJOR && (OPENSCENEGRAPH_MINOR_VERSION<MINOR || (OPENSCENEGRAPH_MINOR_VERSION==MINOR && OPENSCENEGRAPH_PATCH_VERSION<PATCH))))
+#define OSG_VERSION_LESS_OR_EQUAL(MAJOR, MINOR, PATCH) ((OPENSCENEGRAPH_MAJOR_VERSION<MAJOR) || (OPENSCENEGRAPH_MAJOR_VERSION==MAJOR && (OPENSCENEGRAPH_MINOR_VERSION<MINOR || (OPENSCENEGRAPH_MINOR_VERSION==MINOR && OPENSCENEGRAPH_PATCH_VERSION<=PATCH))))
+#define OSG_VERSION_GREATER_THAN(MAJOR, MINOR, PATCH) ((OPENSCENEGRAPH_MAJOR_VERSION>MAJOR) || (OPENSCENEGRAPH_MAJOR_VERSION==MAJOR && (OPENSCENEGRAPH_MINOR_VERSION>MINOR || (OPENSCENEGRAPH_MINOR_VERSION==MINOR && OPENSCENEGRAPH_PATCH_VERSION>PATCH))))
+#define OSG_VERSION_GREATER_OR_EQUAL(MAJOR, MINOR, PATCH) ((OPENSCENEGRAPH_MAJOR_VERSION>MAJOR) || (OPENSCENEGRAPH_MAJOR_VERSION==MAJOR && (OPENSCENEGRAPH_MINOR_VERSION>MINOR || (OPENSCENEGRAPH_MINOR_VERSION==MINOR && OPENSCENEGRAPH_PATCH_VERSION>=PATCH))))
+
+
+/**
+  * osgGetVersion() returns the library version number.
+ * Numbering convention : OpenSceneGraph-1.0 will return 1.0 from osgGetVersion.
+  *
+  * This C function can be also used to check for the existence of the OpenSceneGraph
+  * library using autoconf and its m4 macro AC_CHECK_LIB.
+  *
+  * Here is the code to add to your configure.in:
+ \verbatim
+ #
+ # Check for the OpenSceneGraph (OSG) library
+ #
+ AC_CHECK_LIB(osg, osgGetVersion, ,
+    [AC_MSG_ERROR(OpenSceneGraph library not found. See http://www.openscenegraph.org)],)
+ \endverbatim
+*/
+extern OSG_EXPORT const char* osgGetVersion();
+
+/** The osgGetSOVersion() method returns the OpenSceneGraph soversion number. */
+extern OSG_EXPORT const char* osgGetSOVersion();
+
+/** The osgGetLibraryName() method returns the library name in human-friendly form. */
+extern OSG_EXPORT const char* osgGetLibraryName();
+
+// old defines for backwards compatibility.
+#define OSG_VERSION_MAJOR OPENSCENEGRAPH_MAJOR_VERSION
+#define OSG_VERSION_MINOR OPENSCENEGRAPH_MINOR_VERSION
+#define OSG_VERSION_PATCH OPENSCENEGRAPH_PATCH_VERSION
+
+#define OSG_VERSION_RELEASE OSG_VERSION_PATCH
+#define OSG_VERSION_REVISION 0
+
+
+}
+
+#endif