diff --git a/hadoop.spec b/hadoop.spec
index 11df1ec31728d1064db19475a700c1e5219987ab..32a0d3b5deba1fe250d009da44ec18717fe6a9e9 100644
--- a/hadoop.spec
+++ b/hadoop.spec
@@ -11,7 +11,7 @@
 %define _binaries_in_noarch_packages_terminate_build 0
 Name:   hadoop
 Version: 3.3.4
-Release: 4
+Release: 5
 Summary: A software platform for processing vast amounts of data
 # The BSD license file is missing
 # https://issues.apache.org/jira/browse/HADOOP-9849
@@ -312,6 +312,11 @@ ${HOME}/repository/com/github/eirslett/yarn/1.22.5/yarn-v1.22.5/bin/yarn config
 %mvn_file :%{name}-common::tests: %{name}/%{name}-common
 
 %build
+if [[ "%{?toolchain}" == "clang" ]]
+then
+  export CXXFLAGS="$CXXFLAGS -mcpu=generic+Crc -Wno-reserved-user-defined-literal"
+  export CFLAGS="$CFLAGS -mcpu=generic+Crc -Wno-reserved-user-defined-literal"
+fi
 mvn clean  -Dsnappy.lib=/usr/lib64 -Dbundle.snappy -Dcontainer-executor.conf.dir=%{_sysconfdir}/%{name} -Pdist,native -DskipTests -DskipIT -Dmaven.javadoc.skip=true package -s settings.xml
 
 %install
@@ -1132,6 +1137,9 @@ fi
 %config(noreplace) %{_sysconfdir}/%{name}/container-executor.cfg
 
 %changelog
+* Wed Oct 11 2023 luofeng <luofeng13@huawei.com> - 3.3.4-5
+- support clang build
+
 * Wed Aug 16 2023 Jia Chao <jiac13@chinaunicom.cn> - 3.3.4-4
 - fix: use $HOME rather than /home/abuild, suit for all buildtools.
 - fix: yarn have ELF bin, not noarch at all.