set policy for CMP0042

CMakeLists.txt

@@ -33,6 +33,12 @@ cmake_minimum_required(VERSION 2.6)
 project(CLHEP)
 set( VERSION 2.2.0.7 )
 
+# If Policy CMP0042 exists, use OLD to prefer the use of install names
+# instead of the new @rpath default. 
+if(POLICY CMP0042)
+  cmake_policy(SET CMP0042 OLD)
+endif()
+
 set(CMAKE_MODULE_PATH 
       ${CMAKE_CURRENT_SOURCE_DIR}/cmake/Modules 
       ${CMAKE_MODULE_PATH}