diff --git a/sipcalc/sipcalc.spec b/sipcalc/sipcalc.spec
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+##
+##  sipcalc.spec -- OpenPKG RPM Specification
+##  Copyright (c) 2000-2001 Cable & Wireless ECRC GmbH
+##  Copyright (c) 2000-2001 Ralf S. Engelschall <rse@engelschall.com>
+##
+##  Permission to use, copy, modify, and distribute this software for
+##  any purpose with or without fee is hereby granted, provided that
+##  the above copyright notice and this permission notice appear in all
+##  copies.
+##
+##  THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
+##  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+##  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+##  IN NO EVENT SHALL THE AUTHORS AND COPYRIGHT HOLDERS AND THEIR
+##  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+##  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+##  LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+##  USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+##  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+##  OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+##  OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+##  SUCH DAMAGE. 
+##  
+
+#   package information
+Name:         sipcalc
+Summary:      IP subnet calculator
+URL:          http://www.routemeister.net/projects/sipcalc/
+Vendor:       Simon Ekstrand
+Packager:     The OpenPKG Project
+Distribution: OpenPKG [REL]
+Group:        Net
+License:      GPL
+Version:      1.0.3
+Release:      20011224
+
+#   list of sources
+Source0:      http://www.routemeister.net/projects/sipcalc/files/sipcalc-%{version}.tar.gz
+
+#   build information
+Prefix:       %{l_prefix}
+BuildRoot:    %{l_buildroot}
+BuildPreReq:  OpenPKG, openpkg >= 20011126.0 , gcc, make
+PreReq:       OpenPKG, openpkg >= 20011126.0
+AutoReq:      no
+AutoReqProv:  no
+
+%description
+    sipcalc is an IP subnet calculator
+
+%prep
+    %setup -q 
+
+%build
+    CC="%{l_cc}" \
+    CFLAGS="%{l_cflags -O}" \
+    ./configure \
+        --prefix=%{l_prefix}
+    %{l_make} %{l_mflags -O}
+
+%install
+    rm -rf $RPM_BUILD_ROOT
+    %{l_make} %{l_mflags} install AM_MAKEFLAGS="DESTDIR=$RPM_BUILD_ROOT"
+    strip $RPM_BUILD_ROOT%{l_prefix}/bin/* > /dev/null 2>&1 || true
+    %{l_rpmtool} files -v -ofiles -r$RPM_BUILD_ROOT %{l_files_std}
+
+%files -f files
+
+%clean
+    rm -rf $RPM_BUILD_ROOT
+