!23 add '-Wl, --as-needed' for re2 to link dynamic library

From: @eaglegai 
Reviewed-by: @wang--ge 
Signed-off-by: @wang--ge

re2.spec

@@ -1,6 +1,6 @@
 Name:           re2
 Version:        20230901
-Release:        1
+Release:        2
 Summary:        Provide backtracking RE engine
 License:        BSD
 URL:            http://github.com/google/re2/
@@ -24,6 +24,7 @@ If you want to develop programs using re2, you need to install re2-devel.
 %autosetup -n %{name}-2023-09-01 -p1
 
 %build
+sed -i 's/RE2_LDFLAGS?=-pthread/RE2_LDFLAGS?=-pthread -Wl,--as-needed/g' Makefile
 %make_build CXXFLAGS="${CXXFLAGS:-%optflags} -pthread -std=c++17" \
             LDFLAGS="${LDFLAGS:-%__global_ldflags} -pthread" \
             includedir=%{_includedir} libdir=%{_libdir}
@@ -51,6 +52,9 @@ export LD_LIBRARY_PATH=%{buildroot}/%{_libdir}:LD_LIBRARY_PATH
 %exclude %{_libdir}/libre2.a
 
 %changelog
+* Tue Jan 23 2024 gaihuiying <eaglegai@163.com> - 20230901-2
+- add '-Wl, --as-needed' for re2 to link dynamic library
+
 * Wed Oct 18 2023 wulei <wu_lei@hoperun.com> - 20230901-1
 - Update to 20230901