!151 [sync] PR-146: Add options during configure to support building with clang

From: @openeuler-sync-bot 
Reviewed-by: @technology208 
Signed-off-by: @technology208

ffmpeg.spec

@@ -55,10 +55,14 @@
 %global ffmpeg_license %{?lesser}GPLv2+
 %endif
 
+%if "%{?toolchain}" == "clang"
+%bcond compiler_clang 1
+%endif
+
 Summary:        Digital VCR and streaming server
 Name:           ffmpeg%{?flavor}
 Version:        6.1.1
-Release:        11
+Release:        12
 License:        GPL-3.0-or-later
 URL:            http://ffmpeg.org/
 Source0:        http://ffmpeg.org/releases/ffmpeg-%{version}.tar.xz
@@ -291,7 +295,8 @@ This package contains development files for %{name}
     --enable-shared \\\
     %{!?_without_gpl:--enable-gpl} \\\
     --disable-debug \\\
-    --disable-stripping
+    --disable-stripping \\\
+    %{?with_compiler_clang:--cc=clang --cxx=clang --host-cc=clang}
 
 
 %prep
@@ -400,6 +405,9 @@ install -pm755 tools/qt-faststart %{buildroot}%{_bindir}
 
 
 %changelog
+* Mon Aug 26 2024 jchzhou <zhoujiacheng@iscas.ac.cn> - 6.1.1-12
+- add options during configure for supporting building with clang
+
 * Fri Jul  5 2024 happyworker <208suo@208suo.com> - 6.1.1-11
 - remove fix-CVE-2024-32228.patch