diff --git a/CMakeLists.txt b/CMakeLists.txt
index 3043ff0..41f76c3 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -102,6 +102,26 @@ if(NOT CPPUNIT_FOUND)
     message(FATAL_ERROR "CppUnit required to compile mac")
 endif()
 
+########################################################################
+# On Apple only, set install name and use rpath correctly, if not already set
+########################################################################
+if(APPLE)
+    if(NOT CMAKE_INSTALL_NAME_DIR)
+        set(CMAKE_INSTALL_NAME_DIR
+            ${CMAKE_INSTALL_PREFIX}/${GR_LIBRARY_DIR} CACHE
+            PATH "Library Install Name Destination Directory" FORCE)
+    endif(NOT CMAKE_INSTALL_NAME_DIR)
+    if(NOT CMAKE_INSTALL_RPATH)
+        set(cmakE_INSTALL_RPATH
+            ${CMAKE_INSTALL_PREFIX}/${GR_LIBRARY_DIR} CACHE
+            PATH "Library Install RPath" FORCE)
+    endif(NOT CMAKE_INSTALL_RPATH)
+    if(NOT CMAKE_BUILD_WITH_INSTALL_RPATH)
+        set(CMAKE_BUILD_WITH_INSTALL_RPATH ON CACHE
+            BOOL "Do Build Using Library Install RPath" FORCE)
+    endif(NOT CMAKE_BUILD_WITH_INSTALL_RPATH)
+endif(APPLE)
+
 ########################################################################
 # Setup the include and linker paths
 ########################################################################