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+%bcond_without compat
+
+Name:		zlib-ng
+Version:	2.1.5
+Release:	1
+Summary:	Zlib data compression library for the next generation systems
+License:	zlib
+Url:		https://github.com/zlib-ng/zlib-ng
+Source0:	https://github.com/zlib-ng/zlib-ng/archive/%{version}/%{name}-%{version}.zip
+
+# Be explicit about the soname in order to avoid unintentional changes.
+%global soname libz-ng.so.2
+%global compat_soname libz.so.1
+%global zlib_ver 1.3.0
+%global zlib_obsoletes 1.3
+%global main_dir %_builddir/%{name}-%{version}
+
+BuildRequires:	cmake >= 3.1
+BuildRequires:	gcc-c++
+
+%description
+zlib-ng is a zlib replacement that provides optimizations for "next generation" systems.
+
+%package	devel
+Summary:	Development files for %{name}
+Requires:	%{name}%{?_isa} = %{version}-%{release}
+
+%description	devel
+The %{name}-devel package contains static libraries and header files for
+developing application that use %{name}.
+
+
+%if %{with compat}
+
+%package	compat
+Summary:	Zlib implementation provided by %{name}
+Provides:	zlib = %{zlib_ver}
+Provides:	zlib%{?_isa} = %{zlib_ver}
+Conflicts:	zlib%{?_isa}
+Obsoletes:	zlib < %{zlib_obsoletes}
+ 
+%description	compat
+zlib-ng is a zlib replacement that provides optimizations for "next generation" systems.
+The %{name}-compat package contains the library that is API and binary compatible with zlib.
+ 
+%package	compat-devel
+Summary:	Development files for %{name}-compat
+Requires:	%{name}-compat%{?_isa} = %{version}-%{release}
+Provides:	zlib-devel = %{zlib_ver}
+Provides:	zlib-devel%{?_isa} = %{zlib_ver}
+Conflicts:	zlib-devel%{?_isa}
+Obsoletes:	zlib-devel < %{zlib_obsoletes}
+ 
+%description	compat-devel
+The %{name}-compat-devel package contains libraries and header files for
+developing application that use zlib.
+ 
+%endif
+
+%prep
+%autosetup -p1 -n %{name}-%{version}
+
+%build
+cat <<_EOF_
+###########################################################################
+#
+# Build the default zlib-ng library
+#
+###########################################################################
+_EOF_
+
+# zlib-ng uses a different macro for library directory.
+%global make_param -DWITH_GTEST=OFF -DWITH_SANITIZERS=ON -DINSTALL_LIB_DIR=%{_libdir}
+mkdir -p %{main_dir}/build
+cd %{main_dir}/build
+%cmake .. %{make_param}
+%make_build
+
+%if %{with compat}
+cat <<_EOF_
+###########################################################################
+#
+# Build the compat mode library
+#
+###########################################################################
+_EOF_
+
+# Disable new strategies in order to keep compatibility with zlib.
+mkdir -p %{main_dir}/build-compat
+cd %{main_dir}/build-compat
+%cmake .. %{make_param} -DZLIB_COMPAT=ON -DWITH_NEW_STRATEGIES=OFF
+%make_build
+%endif
+
+
+%check
+make test
+
+%install
+cd %{main_dir}/build
+%make_install
+	
+%if %{with compat}
+cd %{main_dir}/build-compat
+%make_install
+%endif
+
+%files
+%{_libdir}/%{soname}
+%{_libdir}/libz-ng.so.%{version}
+%license LICENSE.md
+%doc README.md
+
+%files devel
+%{_includedir}/zconf-ng.h
+%{_includedir}/zlib-ng.h
+%{_includedir}/zlib_name_mangling-ng.h
+%{_libdir}/libz-ng.so
+%{_libdir}/pkgconfig/%{name}.pc
+
+%if %{with compat}
+
+%files compat
+%{_libdir}/%{compat_soname}
+%{_libdir}/libz.so.%{zlib_ver}.zlib-ng
+
+%files compat-devel
+%{_includedir}/zconf.h
+%{_includedir}/zlib.h
+%{_includedir}/zlib_name_mangling.h
+%{_libdir}/libz.so
+%{_libdir}/pkgconfig/zlib.pc
+
+%endif
+
+%changelog
+* Thu Jan 4 2024 liqiang <liqiang64@huawei.com> - 2.1.5-1
+- Initial commit