diff --git a/openldap.spec b/openldap.spec
index 6c8a6e7659255202742ad612c333678d9104cd8f..90c918fdeaf32379902ff3a57ad3f3af0ed21ede 100644
--- a/openldap.spec
+++ b/openldap.spec
@@ -2,7 +2,7 @@
 
 Name:           openldap
 Version:        2.6.3
-Release:        3
+Release:        4
 Summary:        LDAP support libraries
 License:        OLDAP-2.8
 URL:            https://www.openldap.org/
@@ -151,9 +151,15 @@ pushd openldap-%{version}
 popd
 
 pushd ltb-project-openldap-ppolicy-check-password-1.1
+%if "%toolchain" == "clang"
+make LDAP_INC="-I../openldap-%{version}/include \
+ -I../openldap-%{version}/servers/slapd \
+ -I../openldap-%{version}/build-servers/include" CC=clang
+%else
 make LDAP_INC="-I../openldap-%{version}/include \
  -I../openldap-%{version}/servers/slapd \
  -I../openldap-%{version}/build-servers/include"
+%endif
 popd
 
 %install
@@ -391,6 +397,9 @@ popd
 %doc ltb-project-openldap-ppolicy-check-password-1.1/README.check_pwd
 
 %changelog
+* Tue May 30 2023 liyunfei <liyunfei33@huawei.com> - 2.6.3-4
+- add clang compile support
+
 * Tue Mar 14 2023 zhujunhao <zhujunhao11@huawei.com> - 2.6.3-3
 - remove unused file