diff --git a/README.md b/README.md
index f8bec07..cbe6f65 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,4 @@
 # upx
 
+UPX is a free, portable, extendable, high-performance executable packer for several different executable formats. It achieves an excellent compression ratio and offers very fast decompression. Your executables suffer no memory overhead or other drawbacks for most of the formats supported, because of in-place decompression.
+
diff --git a/upx.spec b/upx.spec
new file mode 100644
index 0000000..2eaed04
--- /dev/null
+++ b/upx.spec
@@ -0,0 +1,82 @@
+%define        lzma_api_version 912
+%define        lzma_version     9.12
+Name:          upx
+Version:       3.91
+Release:       1mamba
+Summary:       An executable packer for several different executable formats
+Group:         Applications/Archiving
+Vendor:        openmamba
+Distribution:  openmamba
+Packager:      Silvan Calarco <silvan.calarco@mambasoft.it>
+URL:           http://upx.sourceforge.net
+Source0:       http://upx.sourceforge.net/download/upx-%{version}-src.tar.bz2
+Source1:       http://downloads.sourceforge.net/project/sevenzip/LZMA%20SDK/%{lzma_version}/lzma%{lzma_api_version}.tar.bz2
+License:       GPL
+## AUTOBUILDREQ-BEGIN
+BuildRequires: glibc-devel
+BuildRequires: libgcc
+BuildRequires: libstdc++6-devel
+BuildRequires: libz-devel
+BuildRequires: libucl-devel
+## AUTOBUILDREQ-END
+BuildRoot:     %{_tmppath}/%{name}-%{version}-root
+
+%description
+UPX is a free, portable, extendable, high-performance executable packer for several different executable formats. It achieves an excellent compression ratio and offers very fast decompression. Your executables suffer no memory overhead or other drawbacks for most of the formats supported, because of in-place decompression.
+
+%prep
+
+%setup -q -n %{name}-%{version}-src
+
+sed -i -e 's/ -O2/ /' -e 's/ -Werror//' src/Makefile
+mkdir lzma%{lzma_api_version}
+tar xfj  %{SOURCE1} -C lzma%{lzma_api_version}
+
+%build
+export CXXFLAGS="$RPM_OPT_FLAGS"
+export CXX=g++
+UPX_LZMA_VERSION=0x%{lzma_api_version} UPX_LZMADIR=../lzma%{lzma_api_version} %make -C src
+make -C doc
+
+%install
+[ "%{buildroot}" != / ] && rm -rf "%{buildroot}"
+
+install -m0755 -D src/upx.out %{buildroot}%{_bindir}/upx
+mkdir -p %{buildroot}%{_mandir}/man1
+install -pm 644 doc/upx.1 %{buildroot}%{_mandir}/man1/
+
+%clean 
+[ "%{buildroot}" != / ] && rm -rf "%{buildroot}"
+
+%files
+%defattr(-,root,root)
+%{_bindir}/upx
+%{_mandir}/man1/upx.1*
+%doc COPYING LICENSE
+#%doc BUGS NEWS README README.1ST README.SRC THANKS TODO
+
+%changelog
+* Sat Jan 04 2014 Automatic Build System <autodist@mambasoft.it> 3.91-1mamba
+- automatic version update by autodist
+
+* Sat Mar 30 2013 Automatic Build System <autodist@mambasoft.it> 3.09-1mamba
+- automatic version update by autodist
+
+* Wed Nov 21 2012 Automatic Build System <autodist@mambasoft.it> 3.08-1mamba
+- automatic version update by autodist
+
+* Thu Sep 23 2010 gil <puntogil@libero.it> 3.07-2mamba
+- add lzma support
+
+* Tue Sep 14 2010 Automatic Build System <autodist@mambasoft.it> 3.07-1mamba
+- automatic update by autodist
+
+* Thu Apr 29 2010 Automatic Build System <autodist@mambasoft.it> 3.05-1mamba
+- automatic update by autodist
+
+* Mon Sep 28 2009 Automatic Build System <autodist@mambasoft.it> 3.04-1mamba
+- automatic update by autodist
+
+* Thu Jan 03 2008 Silvan Calarco <silvan.calarco@mambasoft.it> src-1mamba
+- package created by autospec
+