diff --git a/README.md b/README.md
index 6a730b7..73d5fa7 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,4 @@
 # re2_6
 
+RE2 is a fast, safe, thread-friendly alternative to backtracking regular expression engines like those used in PCRE, Perl, and Python. It is a C++ library.
+
diff --git a/re2_6.spec b/re2_6.spec
new file mode 100644
index 0000000..fc987c9
--- /dev/null
+++ b/re2_6.spec
@@ -0,0 +1,93 @@
+%define gitver %(echo %version | tr _ -)
+Name:          re2_6
+Version:       2020_03_03
+Release:       2mamba
+Summary:       A fast, safe, thread-friendly regular expression library
+Group:         System/Libraries
+Vendor:        openmamba
+Distribution:  openmamba
+Packager:      Silvan Calarco <silvan.calarco@mambasoft.it>
+URL:           https://github.com/google/re2
+Source:        https://github.com/google/re2.git/%{gitver}/re2-%{version}.tar.bz2
+License:       BSD
+## AUTOBUILDREQ-BEGIN
+BuildRequires: glibc-devel
+BuildRequires: libgcc
+BuildRequires: libstdc++6-devel
+## AUTOBUILDREQ-END
+BuildRequires: cmake
+Requires:      lib%{name} = %{?epoch:%epoch:}%{version}-%{release}
+
+%description
+RE2 is a fast, safe, thread-friendly alternative to backtracking regular expression engines like those used in PCRE, Perl, and Python. It is a C++ library.
+
+%package -n lib%{name}
+Group:         System/Libraries
+Summary:       A fast, safe, thread-friendly regular expression library
+
+%description -n lib%{name}
+RE2 is a fast, safe, thread-friendly alternative to backtracking regular expression engines like those used in PCRE, Perl, and Python. It is a C++ library.
+
+%package -n lib%{name}-devel
+Group:         Development/Libraries
+Summary:       Development files for %{name}
+Requires:      lib%{name} = %{?epoch:%epoch:}%{version}-%{release}
+Requires:      pkg-config
+
+%description -n lib%{name}-devel
+This package contains libraries and header files for developing applications that use %{name}.
+
+
+%debug_package
+
+%prep
+%setup -q -n re2-%{version}
+
+%build
+#% cmake -d build
+%make \
+   prefix=%{_prefix} \
+   libdir=%{_libdir}
+
+%install
+[ "%{buildroot}" != / ] && rm -rf "%{buildroot}"
+%makeinstall \
+   prefix=%{_prefix} \
+   libdir=%{_libdir}
+
+%clean
+[ "%{buildroot}" != / ] && rm -rf "%{buildroot}"
+
+%post -n lib%{name} -p /sbin/ldconfig
+%postun -n lib%{name} -p /sbin/ldconfig
+
+%files -n lib%{name}
+%defattr(-,root,root)
+%{_libdir}/libre2.so.*
+%doc AUTHORS LICENSE
+
+%files -n lib%{name}-devel
+%defattr(-,root,root)
+%dir %{_includedir}/re2
+%{_includedir}/re2/*
+%{_libdir}/libre2.a
+%{_libdir}/libre2.so
+%{_libdir}/pkgconfig/re2.pc
+%doc README
+
+
+%changelog
+* Thu Mar 09 2023 Silvan Calarco <silvan.calarco@mambasoft.it> 2020_03_03-2mamba
+- legacy package
+
+* Sun Mar 29 2020 Ercole 'ercolinux' Carpanetto <ercole69@gmail.com> 2020_03_03-1mamba
+- update to 2020_03_03
+
+* Fri Aug 02 2019 Silvan Calarco <silvan.calarco@mambasoft.it> 2019_08_01-1mamba
+- update to 2019_08_01
+
+* Sat Apr 15 2017 Ercole 'ercolinux' Carpanetto <ercole69@gmail.com> 2017_04_01-1mamba
+- update to 2017_04_01
+
+* Sun Dec 11 2016 Silvan Calarco <silvan.calarco@mambasoft.it> 2016_11_01-1mamba
+- package created using the webbuild interface