diff --git a/cmake/define.inc b/cmake/define.inc
index 1bb1692a2b233851f8856c68f5f6a6fef5254bb6..d840cb59e2615585f795a3ac7e06a39d91aa056f 100755
--- a/cmake/define.inc
+++ b/cmake/define.inc
@@ -53,7 +53,7 @@ IF (TD_LINUX_64)
   ADD_DEFINITIONS(-D_M_X64)
   ADD_DEFINITIONS(-D_TD_LINUX_64)
   IF (NOT TD_ARM)
-    IF (${CMAKE_CXX_COMPILER_ID} MATCHES "Clang")
+    IF ((${CMAKE_CXX_COMPILER_ID} MATCHES "Clang") OR (${CMAKE_CXX_COMPILER_ID} MATCHES "clang"))
       SET(COMMON_FLAGS "-std=gnu99 -Wall -Werror -Wno-missing-braces -fPIC -g3 -gdwarf-2 -msse4.2 -D_FILE_OFFSET_BITS=64 -D_LARGE_FILE")
     ELSE ()
       SET(COMMON_FLAGS "-std=gnu99 -Wall -Werror -fPIC -malign-double -g3 -gdwarf-2 -malign-stringops -msse4.2 -D_FILE_OFFSET_BITS=64 -D_LARGE_FILE")