diff --git a/Modules/CMakeDetermineSystem.cmake b/Modules/CMakeDetermineSystem.cmake
index 7fa674d4ba..b826a7fa8e 100644
--- a/Modules/CMakeDetermineSystem.cmake
+++ b/Modules/CMakeDetermineSystem.cmake
@@ -30,12 +30,14 @@ IF(UNIX)
   IF(CMAKE_UNAME)
     EXEC_PROGRAM(uname ARGS -s OUTPUT_VARIABLE CMAKE_SYSTEM_NAME)
     EXEC_PROGRAM(uname ARGS -r OUTPUT_VARIABLE CMAKE_SYSTEM_VERSION)
+    EXEC_PROGRAM(uname ARGS -p OUTPUT_VARIABLE CMAKE_SYSTEM_PROCESSOR)
     SET(CMAKE_UNAME ${CMAKE_UNAME} CACHE INTERNAL "uname command")
   ENDIF(CMAKE_UNAME)
 ELSE(UNIX)
   IF(WIN32)
     SET (CMAKE_SYSTEM_NAME "Windows")
-    SET (CMAKE_SYSTEM_VERSION "")
+    SET (CMAKE_SYSTEM_VERSION "")  
+    SET (CMAKE_SYSTEM_PROCESSOR "")
   ENDIF(WIN32)
 ENDIF(UNIX)
 
diff --git a/Modules/CMakeSystem.cmake.in b/Modules/CMakeSystem.cmake.in
index 1697b35fbe..ad921f6be1 100644
--- a/Modules/CMakeSystem.cmake.in
+++ b/Modules/CMakeSystem.cmake.in
@@ -1,4 +1,5 @@
 SET(CMAKE_SYSTEM "@CMAKE_SYSTEM@")
 SET(CMAKE_SYSTEM_NAME "@CMAKE_SYSTEM_NAME@")
 SET(CMAKE_SYSTEM_VERSION "@CMAKE_SYSTEM_VERSION@")
+SET(CMAKE_SYSTEM_PROCESSOR "@CMAKE_SYSTEM_PROCESSOR@")
 SET(CMAKE_SYSTEM_LOADED 1)