Prepare build system to produce RPMs

Add .spec file under extras/rpms and create targets to produce
source and binary rpms

extras/rpm/clixon.spec

@@ -0,0 +1,72 @@
+%{!?_topdir: %define _topdir %(pwd)}
+%{!?cligen_prefix: %define cligen_prefix %{_prefix}}
+
+Name: clixon
+Version: %{_version}
+Release: %{_release}
+Summary: The XML-based command line processing tool CLIXON
+Group: System Environment/Libraries
+License: ASL 2.0 or GPLv2
+URL: http://www.clicon.org
+AutoReq: no
+BuildRequires: flex, bison
+Requires: cligen, fcgi
+
+# Sometimes developers want to build it without installing cligen but passing
+# path using --with-cligen and pointing it to cligen buildroot. Use %{developer}
+# macro for these cases
+%if 0%{!?developer:1}
+BuildRequires: cligen
+%endif
+
+Source: %{name}-%{version}-%{release}.tar.xz
+
+%description
+The XML-based command line processing tool CLIXON.
+
+%package devel
+Summary: CLIXON header files
+Group: Development/Libraries
+Requires: clixon
+
+%description devel
+This package contains header files for CLIXON.
+
+%prep
+%setup
+
+%build
+%configure --with-cligen=%{cligen_prefix} --without-keyvalue
+make
+
+%install
+make DESTDIR=${RPM_BUILD_ROOT} install install-include
+
+%files
+%{_libdir}/*
+%{_bindir}/*
+%{_sbindir}/*
+#%{_sysconfdir}/*
+%{_datadir}/%{name}/*
+/www-data/clixon_restconf
+
+%files devel
+%{_includedir}/%{name}/*
+
+%clean
+
+%post
+/sbin/ldconfig
+
+caps="cap_setuid,cap_fowner,cap_chown,cap_dac_override"
+caps="${caps},cap_kill,cap_net_admin,cap_net_bind_service"
+caps="${caps},cap_net_broadcast,cap_net_raw"
+
+if [ -x /usr/sbin/setcap ]; then
+	/usr/sbin/setcap ${caps}=ep %{_bindir}/clixon_cli
+	/usr/sbin/setcap ${caps}=ep %{_bindir}/clixon_netconf
+	/usr/sbin/setcap ${caps}=ep %{_sbindir}/clixon_backend
+fi
+
+%postun
+/sbin/ldconfig