diff --git a/README.md b/README.md
index a38b0b7..9cc6e30 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,4 @@
 # mozjs185
 
+Mozilla stand-alone library implementing JavaScript 1.8.5.
+
diff --git a/mozjs185.spec b/mozjs185.spec
new file mode 100644
index 0000000..6475ba4
--- /dev/null
+++ b/mozjs185.spec
@@ -0,0 +1,111 @@
+%define majver %(echo %version | cut -d. -f1-2)
+Name:          mozjs185
+Version:       1.0.0
+Release:       3mamba
+Summary:       Mozilla stand-alone library implementing JavaScript 1.8.5
+Group:         System/Libraries
+Vendor:        openmamba
+Distribution:  openmamba
+Packager:      Silvan Calarco <silvan.calarco@mambasoft.it>
+URL:           http://www.mozilla.org
+Source:        http://ftp.mozilla.org/pub/mozilla.org/js/js185-%{version}.tar.gz
+# Only GPL because linking to readline
+License:       GPL
+#License:       MPL, GPL, LGPL
+## AUTOBUILDREQ-BEGIN
+BuildRequires: glibc-devel
+BuildRequires: libgcc
+BuildRequires: libnspr-devel
+BuildRequires: libstdc++6-devel
+## AUTOBUILDREQ-END
+BuildRequires: pkg-config
+Requires:      lib%{name} = %{?epoch:%epoch:}%{version}-%{release}
+Requires(post): %{__install_info}
+Requires(preun): %{__install_info}
+BuildRoot:     %{_tmppath}/%{name}-%{version}-root
+
+%description
+Mozilla stand-alone library implementing JavaScript 1.8.5.
+
+%package -n lib%{name}
+Group:         System/Libraries
+Summary:       Mozilla stand-alone library implementing JavaScript 1.8.5
+Provides:      libjs
+Obsoletes:     libjs
+Provides:      spidermonkey
+Obsoletes:     spidermonkey
+
+%description -n lib%{name}
+Mozilla stand-alone library implementing JavaScript 1.8.5.
+
+%package -n lib%{name}-devel
+Group:         Development/Libraries
+Summary:       Development files for %{name}
+Requires:      lib%{name} = %{?epoch:%epoch:}%{version}-%{release}
+Provides:      libjs-devel
+Obsoletes:     libjs-devel
+Provides:      spidermonkey-devel
+Obsoletes:     spidermonkey-devel
+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 js-1.8.5
+
+%build
+cd js/src
+%configure \
+    --with-system-nspr \
+    --enable-threadsafe \
+	--enable-readline \
+%ifarch arm
+    --with-cpu-arch=armv5te
+%endif
+
+%make
+
+%install
+[ "%{buildroot}" != / ] && rm -rf "%{buildroot}"
+cd js/src
+%makeinstall
+
+rm -f %{buildroot}%{_libdir}/libmozjs185.so
+ln -s libmozjs185.so.%{majver} %{buildroot}%{_libdir}/libmozjs185.so
+rm -f %{buildroot}%{_libdir}/libmozjs185.so.1.0
+ln -s libmozjs185.so.%{version} %{buildroot}%{_libdir}/libmozjs185.so.1.0
+
+%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}/libmozjs185.so.*
+
+%files -n lib%{name}-devel
+%defattr(-,root,root)
+%{_bindir}/js-config
+%dir %{_includedir}/js
+%{_includedir}/js/*.h
+%{_includedir}/js/*.tbl
+%{_includedir}/js/js.msg
+%{_libdir}/libmozjs185-1.0.a
+%{_libdir}/libmozjs185.so
+%{_libdir}/pkgconfig/mozjs185.pc
+%doc README
+
+%changelog
+* Fri Apr 26 2013 Silvan Calarco <silvan.calarco@mambasoft.it> 1.0.0-3mamba
+- arm: force build for armv5te cpu arch instead of armv7 default (crashes on rpi)
+
+* Sun Sep 16 2012 Silvan Calarco <silvan.calarco@mambasoft.it> 1.0.0-2mamba
+- obsolete spidermonkey
+
+* Sat Sep 15 2012 Silvan Calarco <silvan.calarco@mambasoft.it> 1.0.0-1mamba
+- package created by autospec