diff --git a/jss.spec b/jss.spec
index d34b181..adeedcd 100644
--- a/jss.spec
+++ b/jss.spec
@@ -9,7 +9,7 @@ Summary:       Java Security Services
 URL:           http://www.dogtagpki.org/wiki/JSS
 License:       MPLv1.1 or GPLv2+ or LGPLv2+
 Version:       5.4.0
-Release:       1
+Release:       2
 Source0:       https://github.com/dogtagpki/jss/archive/v%{version}/%{name}-%{version}.tar.gz 
 
 BuildRequires: make cmake >= 3.14 gcc-c++ nspr-devel >= 4.13.1 nss-devel >= 3.66 nss-tools >= 3.66
@@ -20,6 +20,8 @@ Requires:      nss >= 3.66  jpackage-utils slf4j slf4j-jdk14 java-17-openjdk-hea
 
 Conflicts:     ldapjdk < 4.20 idm-console-framework < 1.2 tomcatjss < 7.6.0 pki-base < 10.10.0
 
+Patch1: support-clang-build.patch
+
 %description
 JSS offers a implementation for java-based applications to use native NSS.
 
@@ -82,6 +84,9 @@ modutil -dbdir /etc/pki/nssdb -chkfips true | grep -q enabled && export FIPS_ENA
 %{_javadocdir}/jss/
 
 %changelog
+* Sat Sep 23 2023 luofeng <luofeng13@huawei.com> - 5.4.0-2
+- support clang build
+
 * Wed Apr 26 2023 xu_ping <707078654@qq.com> - 5.4.0-1
 - Upgrade to 5.4.0
 
diff --git a/support-clang-build.patch b/support-clang-build.patch
new file mode 100644
index 0000000..a7934f7
--- /dev/null
+++ b/support-clang-build.patch
@@ -0,0 +1,25 @@
+From fd3adeeb0a757c52c62327ace6016fb792b7a491 Mon Sep 17 00:00:00 2001
+From: luofeng <luofeng13@huawei.com>
+Date: Sat, 23 Sep 2023 17:55:57 +0800
+Subject: [PATCH] support clang build
+
+---
+ cmake/JSSConfig.cmake | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/cmake/JSSConfig.cmake b/cmake/JSSConfig.cmake
+index 07b5cd6..a11289e 100644
+--- a/cmake/JSSConfig.cmake
++++ b/cmake/JSSConfig.cmake
+@@ -176,7 +176,7 @@ macro(jss_config_cflags)
+     # Handle passed-in C flags as well; assume they are valid.
+     separate_arguments(PASSED_C_FLAGS UNIX_COMMAND "${CMAKE_C_FLAGS}")
+     foreach(PASSED_C_FLAG ${PASSED_C_FLAGS})
+-        list(INSERT JSS_C_FLAGS 0 "${PASSED_C_FLAG}")
++        list(APPEND JSS_C_FLAGS "${PASSED_C_FLAG}")
+     endforeach()
+ 
+     message(STATUS "JSS C FLAGS: ${JSS_C_FLAGS}")
+-- 
+2.19.1
+