diff --git a/isl.changes b/isl.changes
index 9ae45b5..cbe1eca 100644
--- a/isl.changes
+++ b/isl.changes
@@ -1,3 +1,14 @@
+-------------------------------------------------------------------
+Wed Jan 31 12:50:45 UTC 2018 - jengelh@inai.de
+
+- Set shared library RPM group. Use %make_install.
+
+-------------------------------------------------------------------
+Mon Jan 29 14:43:34 UTC 2018 - msrb@suse.com
+
+- Include pkgconfig files in isl-devel package.
+- Do not build static libraries (instead of deleting them after).
+
 -------------------------------------------------------------------
 Tue Jan 31 14:05:40 UTC 2017 - rguenther@suse.com
 
diff --git a/isl.spec b/isl.spec
index a0be5c7..7c866ea 100644
--- a/isl.spec
+++ b/isl.spec
@@ -1,7 +1,7 @@
 #
 # spec file for package isl
 #
-# Copyright (c) 2017 SUSE LINUX GmbH, Nuernberg, Germany.
+# Copyright (c) 2018 SUSE LINUX GmbH, Nuernberg, Germany.
 #
 # All modifications and additions to the file contributed by third parties
 # remain the property of their copyright owners, unless otherwise agreed
@@ -27,6 +27,7 @@ Url:            http://isl.gforge.inria.fr/
 Source:         http://isl.gforge.inria.fr/isl-%{version}.tar.xz
 Source1:        baselibs.conf
 BuildRequires:  gmp-devel
+BuildRequires:  pkgconfig
 BuildRoot:      %{_tmppath}/%{name}-%{version}-build
 
 %description
@@ -44,27 +45,28 @@ Development tools and headers for the ISL.
 
 %package -n libisl%{islsover}
 Summary:        The ISL shared library
-Group:          Development/Languages/C and C++
+Group:          System/Libraries
 
 %description -n libisl%{islsover}
 The shared library for the ISL.
 
+ISL is a library for manipulating sets and relations of integer points
+bounded by linear constraints.
+
 %prep
 %setup -q
 
 %build
-%configure
+%configure --disable-static
 make %{?_smp_mflags} V=1
 
 %check
 make %{?_smp_mflags} check
 
 %install
-make DESTDIR=%{buildroot} install %{?_smp_mflags}
+%make_install
 rm -f  %{buildroot}%{_libdir}/*.la
-rm -rf %{buildroot}%{_libdir}/pkgconfig
 rm -f  %{buildroot}%{_libdir}/libisl.so.*-gdb.py
-rm -f  %{buildroot}%{_libdir}/libisl.a
 
 %post -n libisl%{islsover} -p /sbin/ldconfig
 %postun -n libisl%{islsover} -p /sbin/ldconfig
@@ -77,5 +79,6 @@ rm -f  %{buildroot}%{_libdir}/libisl.a
 %defattr(-,root,root,-)
 %{_includedir}/isl
 %{_libdir}/libisl.so
+%{_libdir}/pkgconfig/%{name}.pc
 
 %changelog