!40 LLVM平行宇宙：Support for building with clang

From: @zj94 
Reviewed-by: @cf-zhao, @zhujianwei001 
Signed-off-by: @zhujianwei001

libtpms.spec

@@ -2,7 +2,7 @@
 
 %define name      libtpms
 %define version   0.9.5
-%define release   2
+%define release   3
 
 # Valid crypto subsystems are 'freebl' and 'openssl'
 %if "%{?crypto_subsystem}" == ""
@@ -77,6 +77,10 @@ Libtpms header files and documentation.
 
 %build
 
+%if "%toolchain" == "clang"
+export CFLAGS="${CFLAGS} -Wno-self-assign"
+%endif
+
 %if "%{crypto_subsystem}" == "openssl"
 %define _with_openssl --with-openssl
 %endif
@@ -115,6 +119,9 @@ rm -f $RPM_BUILD_ROOT%{_libdir}/libtpms.la
 %postun -p /sbin/ldconfig
 
 %changelog
+* Tue Oct 10 2023 zhoujing <zhoujing106@huawei.com> - 0.9.5-3
+- Add -Wno-self-assign for building with clang
+
 * Tue Mar 07 2023 jiangfangjie <jiangfangjie@huawei.com> - 0.9.5-2
 - fix CVE-2023--1018 and CVE-2023-1017