diff --git a/CMakeLists.txt b/CMakeLists.txt
index 2569e85d7..e611de63f 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -152,6 +152,7 @@ IF(UNIX)
     FIND_PACKAGE(X11)
     # Some Unicies need explicit linkage to the Math library or the build fails.
     FIND_LIBRARY(MATH_LIBRARY m)
+    FIND_LIBRARY(DL_LIBRARY dl)
     IF( CMAKE_SYSTEM MATCHES "Linux" )
         FIND_LIBRARY( RT_LIBRARY rt )
     ENDIF( CMAKE_SYSTEM MATCHES "Linux" )
diff --git a/src/osg/CMakeLists.txt b/src/osg/CMakeLists.txt
index a8b4cbe95..68911d91b 100644
--- a/src/osg/CMakeLists.txt
+++ b/src/osg/CMakeLists.txt
@@ -331,7 +331,7 @@ ADD_LIBRARY(${LIB_NAME}
 LINK_INTERNAL(${LIB_NAME}     
     OpenThreads
 )
-LINK_EXTERNAL(${LIB_NAME} ${CMAKE_THREAD_LIBS_INIT}    ${MATH_LIBRARY} ${RT_LIBRARY} )
+LINK_EXTERNAL(${LIB_NAME} ${CMAKE_THREAD_LIBS_INIT}    ${MATH_LIBRARY} ${RT_LIBRARY} ${DL_LIBRARY})
 LINK_CORELIB_DEFAULT(${LIB_NAME} ${CMAKE_THREAD_LIBS_INIT} ${MATH_LIBRARY} ${RT_LIBRARY} )
 
 INCLUDE(ModuleInstall OPTIONAL)
diff --git a/src/osgDB/CMakeLists.txt b/src/osgDB/CMakeLists.txt
index 89c2c7d28..d363a0cae 100644
--- a/src/osgDB/CMakeLists.txt
+++ b/src/osgDB/CMakeLists.txt
@@ -135,7 +135,7 @@ LINK_INTERNAL(${LIB_NAME}
     osg
     OpenThreads
 )
-LINK_EXTERNAL(${LIB_NAME} ${OSGDB_PLATFORM_SPECIFIC_LIBRARIES})
+LINK_EXTERNAL(${LIB_NAME} ${OSGDB_PLATFORM_SPECIFIC_LIBRARIES} ${DL_LIBRARY})
 LINK_WITH_VARIABLES(${LIB_NAME} ${COMPRESSION_LIBRARIES})
 LINK_CORELIB_DEFAULT(${LIB_NAME})