diff --git a/CMakeLists.txt b/CMakeLists.txt
index 5b6de21e060052f4cf9770a6ba7bde70196b5c0e..0747101e42bffae9a9c06df6463ff794957437bf 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -3,10 +3,15 @@ project(paddle-mobile)
 add_definitions(-DPADDLE_MOBILE_DEBUG)
 add_definitions(-DENABLE_EXCEPTION)
 
-#add_definitions(-DARMV7)
-#add_definitions(-DARMV8)
-#add_definitions(-DIOS)
-add_definitions(-DX86)
+if(IS_MAC)
+    add_definitions(-DX86)
+elseif(IS_IOS)
+    add_definitions(-DIOS)
+elseif(V7)
+    add_definitions(-DARMV7)
+elseif(V8)
+    add_definitions(-DARMV8)
+endif(IS_MAC)
 
 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11")
 set(CMAKE_BUILD_TYPE RelWithDebInfo)