diff --git a/CMakeLists.txt b/CMakeLists.txt
index 6fcce54b6..bc7d8aecd 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -2,6 +2,12 @@
 project(GTSAM CXX C)
 cmake_minimum_required(VERSION 2.6)
 
+# new feature to Cmake Version > 2.8.12
+# Mac ONLY. Define Relative Path on Mac OS
+if(NOT DEFINED CMAKE_MACOSX_RPATH)
+  set(CMAKE_MACOSX_RPATH 0)
+endif()
+
 # Set the version number for the library
 set (GTSAM_VERSION_MAJOR 3)
 set (GTSAM_VERSION_MINOR 1)