diff --git a/device-mapper.spec b/device-mapper.spec
index 28fbda4..cc2509e 100644
--- a/device-mapper.spec
+++ b/device-mapper.spec
@@ -1,7 +1,7 @@
 Summary: Device mapper library
 Name: device-mapper
 Version: 1.02.17
-Release: 2%{?dist}
+Release: 3%{?dist}
 License: GPL
 Group: System Environment/Base
 URL: http://sources.redhat.com/dm
@@ -15,6 +15,15 @@ BuildRequires: libselinux-devel, libsepol-devel
 This package contains the supporting userspace files (libdevmapper and
 dmsetup) for the device-mapper.
 
+%package devel
+Summary: Development libraries and headers for device-mapper.
+Group: Development/Libraries
+Requires: %{name}-%{version}
+ 
+%description devel
+This package contains files needed to develop applications that use
+the device-mapper libraries.
+ 
 %prep
 %setup -q -n %{name}.%{version}
 
@@ -39,15 +48,21 @@ rm -rf $RPM_BUILD_ROOT
 %defattr(-,root,root,-)
 %doc COPYING COPYING.LIB INSTALL INTRO README VERSION WHATS_NEW
 %attr(755,root,root) %{_libdir}/libdevmapper.so*
-%attr(755,root,root) %{_libdir}/libdevmapper.a*
 %attr(755,root,root) %{_sbindir}/dmsetup
 %attr(755,root,root) %{_sbindir}/dmsetup.static
 %{_mandir}/*/*
+
+%files devel
+%defattr(-,root,root,-)
+%attr(755,root,root) %{_libdir}/libdevmapper.a*
 %{_includedir}/libdevmapper.h
 /usr/%{_lib}/pkgconfig/*.pc
 
 
 %changelog
+* Tue Jan 31 2007 Alasdair Kergon <agk@redhat.com> - 1.02.17-3
+- Move some files into a separate -devel package.
+
 * Tue Jan 31 2007 Alasdair Kergon <agk@redhat.com> - 1.02.17-2
 - Update BuildRoot line.