diff --git a/README.md b/README.md
index d7052fe..d2ad39e 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,4 @@
 # libnfs13
 
+LIBNFS is a client library for accessing NFS shares over a network.
+
diff --git a/libnfs13.spec b/libnfs13.spec
new file mode 100644
index 0000000..a70ede6
--- /dev/null
+++ b/libnfs13.spec
@@ -0,0 +1,133 @@
+Name:          libnfs13
+Version:       4.0.0
+Release:       2mamba
+Summary:       NFS client library
+Group:         System/Libraries
+Vendor:        openmamba
+Distribution:  openmamba
+Packager:      Silvan Calarco <silvan.calarco@mambasoft.it>
+URL:           https://github.com/sahlberg/libnfs/
+Source:        https://github.com/sahlberg/libnfs/archive/libnfs-%{version}.tar.gz
+License:       LGPL
+## AUTOBUILDREQ-BEGIN
+BuildRequires: glibc-devel
+## AUTOBUILDREQ-END
+BuildRequires: autoconf
+BuildRequires: libtool
+
+%description
+LIBNFS is a client library for accessing NFS shares over a network.
+
+%package devel
+Group:         Development/Libraries
+Summary:       Development files for %{name}
+Requires:      %{name} = %{?epoch:%epoch:}%{version}-%{release}
+Requires:      pkg-config
+
+%description devel
+This package contains libraries and header files for developing applications that use %{name}.
+
+%package tools
+Group:         Applications/Networking
+Summary:       Utility applications for %{name}
+Requires:      %{name} = %{?epoch:%epoch:}%{version}-%{release}
+
+%description tools
+This package contains utility applications for %{name}.
+
+%debug_package
+
+%prep
+%setup -q -n libnfs-libnfs-%{version}
+./bootstrap
+
+%build
+%configure --disable-static
+%make
+
+%install
+[ "%{buildroot}" != / ] && rm -rf "%{buildroot}"
+%makeinstall
+
+%clean
+[ "%{buildroot}" != / ] && rm -rf "%{buildroot}"
+
+%post -p /sbin/ldconfig
+%postun -p /sbin/ldconfig
+
+%files
+%defattr(-,root,root)
+%{_libdir}/libnfs.so.*
+%doc COPYING
+
+%files devel
+%defattr(-,root,root)
+%dir %{_includedir}/nfsc
+%{_includedir}/nfsc/*
+%{_libdir}/libnfs.la
+%{_libdir}/libnfs.so
+%{_libdir}/pkgconfig/libnfs.pc
+%doc README
+
+%files tools
+%defattr(-,root,root)
+%{_bindir}/nfs-*
+%{_mandir}/man1/nfs-*.1*
+
+%changelog
+* Thu Mar 31 2022 Silvan Calarco <silvan.calarco@mambasoft.it> 4.0.0-2mamba
+- legacy package
+
+* Mon Feb 25 2019 Automatic Build System <autodist@mambasoft.it> 4.0.0-1mamba
+- automatic version update by autodist
+
+* Thu Jul 12 2018 Automatic Build System <autodist@mambasoft.it> 3.0.0-1mamba
+- automatic version update by autodist
+
+* Mon Aug 07 2017 Automatic Build System <autodist@mambasoft.it> 2.0.0-1mamba
+- automatic version update by autodist
+
+* Tue Oct 18 2016 Automatic Build System <autodist@mambasoft.it> 1.11.0-1mamba
+- automatic version update by autodist
+
+* Tue Feb 02 2016 Automatic Build System <autodist@mambasoft.it> 1.10.0-2mamba
+- automatic version update by autodist
+
+* Tue Feb 02 2016 Automatic Build System <autodist@mambasoft.it> 1.10.0-1mamba
+- automatic version update by autodist
+
+* Tue Jan 26 2016 Automatic Build System <autodist@mambasoft.it> 1.9.8-1mamba
+- automatic version update by autodist
+
+* Tue Feb 10 2015 Automatic Build System <autodist@mambasoft.it> 1.9.7-1mamba
+- automatic version update by autodist
+
+* Mon Dec 22 2014 Automatic Build System <autodist@mambasoft.it> 1.9.6-1mamba
+- automatic version update by autodist
+
+* Mon Jul 28 2014 Silvan Calarco <silvan.calarco@mambasoft.it> 1.9.5-1mamba
+- update to 1.9.5
+
+* Wed Jul 02 2014 Automatic Build System <autodist@mambasoft.it> 1.9.4-1mamba
+- automatic version update by autodist
+
+* Wed Mar 26 2014 Automatic Build System <autodist@mambasoft.it> 1.9.3-1mamba
+- automatic version update by autodist
+
+* Sun Feb 02 2014 Automatic Build System <autodist@mambasoft.it> 1.9.2-1mamba
+- automatic version update by autodist
+
+* Tue Nov 26 2013 Automatic Build System <autodist@mambasoft.it> 1.8.0-1mamba
+- automatic version update by autodist
+
+* Tue Oct 22 2013 Automatic Build System <autodist@mambasoft.it> 1.7.0-1mamba
+- automatic version update by autodist
+
+* Mon Jun 10 2013 Automatic Build System <autodist@mambasoft.it> 1.6.0-1mamba
+- automatic version update by autodist
+
+* Mon Apr 15 2013 Automatic Build System <autodist@mambasoft.it> 1.5.0-1mamba
+- automatic version update by autodist
+
+* Sun Feb 17 2013 Davide Madrisan <davide.madrisan@gmail.com> 1.3.0-1mamba
+- package created by autospec