diff --git a/CMakeLists.txt b/CMakeLists.txt
index fd361ae97434793331bafbdcaa030ff0cf56716a..2daa360f2fad5ad02345222b17eae010558979f1 100755
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -44,12 +44,30 @@ IF (NOT DEFINED TD_CLUSTER)
   SET(TD_MIPS_64 FALSE)
   SET(TD_DARWIN_64 FALSE)
   SET(TD_WINDOWS_64 FALSE)
-  
+
+  # if generate ARM version:
+  #   cmake -DARMVER=arm32 .. or cmake -DARMVER=arm64
+  IF (${ARMVER} MATCHES "arm32")
+    SET(TD_ARM TRUE)
+    SET(TD_ARM_32 TRUE)
+    ADD_DEFINITIONS(-D_TD_ARM_)
+    ADD_DEFINITIONS(-D_TD_ARM_32_)
+  ELSEIF (${ARMVER} MATCHES "arm64")
+    SET(TD_ARM TRUE)
+    SET(TD_ARM_64 TRUE)
+    ADD_DEFINITIONS(-D_TD_ARM_)
+    ADD_DEFINITIONS(-D_TD_ARM_64_)
+  ENDIF ()
+
   IF (TD_ARM)
     ADD_DEFINITIONS(-D_TD_ARM_)
     IF (TD_ARM_32)
       ADD_DEFINITIONS(-D_TD_ARM_32_)
-    ENDIF ()
+    ELSEIF (TD_ARM_64)
+      ADD_DEFINITIONS(-D_TD_ARM_64_)
+    ELSE ()
+      EXIT ()
+    ENDIF
   ENDIF ()
 
   IF (${CMAKE_SYSTEM_NAME} MATCHES "Linux")