support clang build

Signed-off-by: luofeng14 <luofeng13@huawei.com>
(cherry picked from commit faa587dbb0cb173f7853bf18767e1febbe679e1a)

libwebp.spec

@@ -1,6 +1,6 @@
 Name:          libwebp
 Version:       1.3.2
-Release:       2
+Release:       3
 URL:           https://www.webmproject.org
 Summary:       Library and tools for the WebP graphics format
 License:       BSD
@@ -67,7 +67,7 @@ swig -ignoremissing -I../src -java \
     -outdir java/com/google/webp \
     -o libwebp_java_wrap.c libwebp.swig
 
-gcc %{__global_ldflags} %{optflags} -shared \
+%{__cc} %{__global_ldflags} %{optflags} -shared \
     -I/usr/lib/jvm/java/include \
     -I/usr/lib/jvm/java/include/linux \
     -I../src \
@@ -113,6 +113,12 @@ cp swig/*.jar swig/*.so %{buildroot}/%{_libdir}/%{name}-java/
 %{_mandir}/man*/*
 
 %changelog
+* Thu Feb 22 2024 luofng <luofeng13@huawei.com> - 1.3.2-3
+- Type: enhencement
+- CVE:NA
+- SUG:NA
+- DESC:support for building with clang
+
 * Tue Sep 26 2023 liweigang <liweiganga@uniontech.com> - 1.3.2-2
 - backport CVE-2023-4863