Index: OpenSceneGraph/trunk/src/osgDB/CMakeLists.txt
===================================================================
--- OpenSceneGraph/trunk/src/osgDB/CMakeLists.txt (revision 9671)
+++ OpenSceneGraph/trunk/src/osgDB/CMakeLists.txt (revision 9880)
@@ -77,5 +77,14 @@
     # Needs CoreFoundation calls and a Carbon function
     SET(OSGDB_PLATFORM_SPECIFIC_LIBRARIES ${CARBON_LIBRARY})
-    ADD_DEFINITIONS(-DDARWIN_QUICKTIME)
+ 
+    SET(OSG_DEFAULT_IMAGE_PLUGIN_FOR_OSX "quicktime" CACHE STRING "standard image plugin for os x, options are quicktime, imageio")
+
+
+    IF(${OSG_DEFAULT_IMAGE_PLUGIN_FOR_OSX} STREQUAL "quicktime")
+        ADD_DEFINITIONS(-DDARWIN_QUICKTIME)
+    ELSE(${OSG_DEFAULT_IMAGE_PLUGIN_FOR_OSX} STREQUAL "quicktime")
+        ADD_DEFINITIONS(-DDARWIN_IMAGEIO)
+    ENDIF(${OSG_DEFAULT_IMAGE_PLUGIN_FOR_OSX} STREQUAL "quicktime")
+
 ENDIF(APPLE)