diff --git a/CMakeLists.in-tree.txt b/CMakeLists.in-tree.txt
index f0adeafb959595c810cd77d7e4ea3c0de298e86f..24e943c6c5d21edeef4227ffaf42af1e62b683ae 100644
--- a/CMakeLists.in-tree.txt
+++ b/CMakeLists.in-tree.txt
@@ -20,14 +20,16 @@ include_directories( $ENV{MAPLE_ROOT}/src/mapleall/maple_ir/include
 
 link_directories( $ENV{MAPLE_ROOT}/output/$ENV{MAPLE_BUILD_TYPE}/lib/64)
 
-add_compile_definitions(DEBUG DYNAMICLANG)
-
 add_clang_tool(clang2mpl
   Clang2Maple.cpp
   Clang2MapleResult.cpp
   Clang2MapleVisitor.cpp
   )
 
+if (CMAKE_BUILD_TYPE EQUAL "DEBUG")
+  target_compile_definitions(clang2mpl PRIVATE DEBUG DYNAMICLANG)
+endif (CMAKE_BUILD_TYPE EQUAL "DEBUG")
+
 clang_target_link_libraries(clang2mpl
   PRIVATE
   clangAST
diff --git a/CMakeLists.txt b/CMakeLists.txt
index b2255aa5e42e456094ec92d3c320de2f614b062e..c2330a96a9f2a0900df76bb4de234c84a1ac9274 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -12,7 +12,7 @@
 #  NON-INFRINGEMENT, MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE. See the
 #  Mulan PSL v2 for more details.
 #
-cmake_minimum_required(VERSION 3.12)
+cmake_minimum_required(VERSION 3.10)
 project(clang2mpl)
 
 set( LLVM_LINK_COMPONENTS
@@ -40,8 +40,6 @@ link_directories( $ENV{MAPLE_ROOT}/output/$ENV{MAPLE_BUILD_TYPE}/lib/64
   $ENV{MAPLE_ROOT}/tools/clang+llvm-10.0.0-x86_64-linux-gnu-ubuntu-18.04/lib
 )
 
-add_compile_definitions(DEBUG DYNAMICLANG)
-
 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fno-rtti")
 
 add_executable(clang2mpl
@@ -50,6 +48,10 @@ add_executable(clang2mpl
   Clang2MapleVisitor.cpp
   )
 
+if (CMAKE_BUILD_TYPE EQUAL "DEBUG")
+  target_compile_definitions(clang2mpl PRIVATE DEBUG DYNAMICLANG)
+endif (CMAKE_BUILD_TYPE EQUAL "DEBUG")
+
 target_link_libraries(clang2mpl
   PRIVATE
   clangTooling