diff --git a/OpenCSD.spec b/OpenCSD.spec
index 5181519c01579e77bbe956961fb09081b7a5f049..92524bdc634b312b5816b532827d15a3dc6bea05 100644
--- a/OpenCSD.spec
+++ b/OpenCSD.spec
@@ -1,7 +1,7 @@
 Summary        : An open source CoreSight(tm) Trace Decode library
 Name           : OpenCSD
 Version        : 1.3.3
-Release        : 4
+Release        : 5
 License        : BSD
 Source         : %{name}-%{version}.tar.gz
 BuildRoot      : %{_tmppath}/%{name}-%{version}-${release}-root
@@ -21,9 +21,12 @@ The library is implemented in C++ with an optional "C" API.
 
 
 %build
+%if "%{?toolchain}" == "clang"
+  %global make_opts CC=clang CXX=clang++
+%endif
 export CFLAGS="$RPM_OPT_FLAGS  -fPIE -pie"
 export CXXFLAGS="$RPM_OPT_FLAGS -fPIE -pie"
-make -C decoder/build/linux %{?_smp_mflags}
+make -C decoder/build/linux %{?_smp_mflags} %{?make_opts}
 
 
 %install
@@ -44,6 +47,9 @@ rm -rf %{buildroot}
 
 
 %changelog
+* Tue Jan 14 2025 Suyun <ziyu.oerv@isrc.iacas.ac.cn> - 1.3.3-5
+- Support for building with Clang
+
 * Wed Apr 03 2024 guoqinglan <guoqinglan@kylinsec.com.cn> - 1.3.3-4
 - enable debug package
 - change permission from 644 to 755