--- a/src/CMakeLists.txt	2016-09-14 01:48:05.822928918 +0200
+++ b/src/CMakeLists.txt	2016-09-14 01:48:54.906931451 +0200
@@ -1,7 +1,7 @@
 IF (WIN32)
   ADD_DEFINITIONS (-D_CRT_SECURE_NO_WARNINGS)
 ELSE (WIN32)
-  SET (CMAKE_CXX_FLAGS "-Wall -fno-strict-aliasing")
+  SET (CMAKE_CXX_FLAGS "-Wall -fno-strict-aliasing ${CMAKE_CXX_FLAGS}")
 
   OPTION (APVLV_ENABLE_DEBUG "If build binary with debug infomations." OFF)
   IF (APVLV_ENABLE_DEBUG)
