diff --git a/README.md b/README.md
index b9a5fac..edfee53 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,4 @@
 # vtk-x86
 
+The Visualization Toolkit (VTK) is open source software for manipulating and displaying scientific data. It comes with state-of-the-art tools for 3D rendering, a suite of widgets for 3D interaction, and extensive 2D plotting capability.
+
diff --git a/vtk-x86.spec b/vtk-x86.spec
new file mode 100644
index 0000000..f6444bf
--- /dev/null
+++ b/vtk-x86.spec
@@ -0,0 +1,123 @@
+%define majver %(echo %version | cut -d. -f1-2)
+Name:          vtk-x86
+Version:       9.3.0
+Release:       2mamba
+Summary:       Software for manipulating and displaying scientific data (legacy for x86 with minimal requirements)
+Group:         Applications/Scientific
+Vendor:        openmamba
+Distribution:  openmamba
+Packager:      Silvan Calarco <silvan.calarco@mambasoft.it>
+URL:           https://vtk.org/
+Source:        https://www.vtk.org/files/release/%{majver}/VTK-%{version}.tar.gz
+License:       BSD
+## AUTOBUILDREQ-BEGIN
+BuildRequires: glibc-devel
+BuildRequires: libX11-devel
+BuildRequires: libXcursor-devel
+BuildRequires: libXfixes-devel
+BuildRequires: libXrender-devel
+BuildRequires: libgcc
+BuildRequires: libglvnd-devel
+BuildRequires: libstdc++6-devel
+## AUTOBUILDREQ-END
+ExclusiveArch: %{ix86}
+BuildRequires: cmake
+Requires:      lib%{name} = %{?epoch:%epoch:}%{version}-%{release}
+Provides:      vtk
+Obsoletes:     vtk < 9.3.0-2mamba
+
+%description
+The Visualization Toolkit (VTK) is open source software for manipulating and displaying scientific data. It comes with state-of-the-art tools for 3D rendering, a suite of widgets for 3D interaction, and extensive 2D plotting capability.
+
+%package -n lib%{name}
+Group:         System/Libraries
+Summary:       Software for manipulating and displaying scientific data
+Provides:      libvtk
+Obsoletes:     libvtk < 9.3.0-2mamba
+
+%description -n lib%{name}
+The Visualization Toolkit (VTK) is open source software for manipulating and displaying scientific data. It comes with state-of-the-art tools for 3D rendering, a suite of widgets for 3D interaction, and extensive 2D plotting capability.
+This package contains shared libraries for %{name}.
+
+%package -n lib%{name}-devel
+Group:         Development/Libraries
+Summary:       Development files for %{name}
+Requires:      lib%{name} = %{?epoch:%epoch:}%{version}-%{release}
+Requires:      %{name} = %{?epoch:%epoch:}%{version}-%{release}
+Provides:      libvtk-devel
+Obsoletes:     libvtk-devel < 9.3.0-2mamba
+
+%description -n lib%{name}-devel
+This package contains libraries and header files for developing applications that use %{name}.
+
+%debug_package
+
+%prep
+%setup -q -n VTK-%{version}
+#-D -T
+
+%build
+#:<< _EOF
+%cmake \
+   -DCMAKE_INSTALL_LIBDIR=%{_lib} \
+   -DINCLUDE_INSTALL_DIR=include \
+   -DCMAKE_C_FLAGS="%{optflags} -fcommon" \
+   -DVTK_VERSIONED_INSTALL=OFF
+
+%cmake_build
+
+%install
+[ "%{buildroot}" != / ] && rm -rf "%{buildroot}"
+%cmake_install
+
+%clean
+[ "%{buildroot}" != / ] && rm -rf "%{buildroot}"
+
+%post -n lib%{name} -p /sbin/ldconfig
+%postun -n lib%{name} -p /sbin/ldconfig
+
+%files -n %{name}
+%defattr(-,root,root)
+%{_bindir}/vtk*
+%dir %{_datadir}/licenses/VTK
+%{_datadir}/licenses/VTK/*
+%dir %{_datadir}/vtk
+%dir %{_datadir}/vtk/proj
+%{_datadir}/vtk/proj/*
+
+%files -n lib%{name}
+%defattr(-,root,root)
+%{_libdir}/libvtk*.so.*
+%dir %{_libdir}/vtk
+%dir %{_libdir}/vtk/hierarchy
+%dir %{_libdir}/vtk/hierarchy/VTK
+%{_libdir}/vtk/hierarchy/VTK/*
+%doc Copyright.txt
+
+%files -n lib%{name}-devel
+%defattr(-,root,root)
+%dir %{_includedir}/vtk
+%{_includedir}/vtk/*
+%{_libdir}/libvtk*.so
+%dir %{_libdir}/cmake/vtk
+%{_libdir}/cmake/vtk/*.cmake
+%{_libdir}/cmake/vtk/*.in
+%dir %{_libdir}/cmake/vtk/patches
+%{_libdir}/cmake/vtk/patches/*
+%doc README.md
+
+%changelog
+* Sun Jun 16 2024 Silvan Calarco <silvan.calarco@mambasoft.it> 9.3.0-2mamba
+- legacy minimal deps build for x86
+
+* Sat Nov 25 2023 Automatic Build System <autodist@mambasoft.it> 9.3.0-1mamba
+- automatic version update by autodist
+
+* Thu Jun 02 2022 Silvan Calarco <silvan.calarco@mambasoft.it> 9.1.0-2mamba
+- rebuilt with  -DVTK_VERSIONED_INSTALL=OFF
+
+* Wed Jun 01 2022 Automatic Build System <autodist@mambasoft.it> 9.1.0-1mamba
+- automatic version update by autodist
+
+* Tue Dec 03 2019 Silvan Calarco <silvan.calarco@mambasoft.it> 8.2.0-1mamba
+- package created using the webbuild interface