!33 【LLVM平行宇宙】Add clang compile support

From: @liyunfei33 
Reviewed-by: @t_feng 
Signed-off-by: @t_feng

python-dmidecode.spec

@@ -1,6 +1,6 @@
 Name:           python-dmidecode
 Version:        3.12.3
-Release:        3
+Release:        4
 Summary:        Python extension module for dmidecode
 
 License:        GPLv2
@@ -13,6 +13,9 @@ Patch1:         python-dmidecode-3.12.3-sw.patch
 Patch2:         python-dmidecode-rhbz2154949.patch
 
 BuildRequires:  gcc libxml2-devel python3-libxml2 python3-devel
+%if "%toolchain" == "clang"
+BuildRequires:  clang llvm lld
+%endif
 
 %description
 Dmidecode reports information about your system's hardware as described in
@@ -47,7 +50,9 @@ sed -i 's/python2/python3/g' Makefile unit-tests/Makefile
 export PYTHON_BIN=%{__python3}
 export PYTHON_VERSION=%{python3_version}
 export CFLAGS="%{build_cflags} -std=gnu89"
-export CC=gcc
+%if "%toolchain" == "clang"
+export CFLAGS="$CFLAGS -Wno-error=int-conversion"
+%endif
 %make_build
 
 %install
@@ -71,6 +76,9 @@ make -C unit-tests
 %doc README doc/README.upstream
 
 %changelog
+* Fri Aug 11 2023 liyunfei <liyunfei33@huawei.com> - 3.12.3-4
+- add clang compile support
+
 * Wed Jul 05 2023 zhouwenpei <zhouwenpei@h-partners.com> - 3.12.3-3
 - fix build error