rm -rf $RPM_BUILD_ROOT
install -d $RPM_BUILD_ROOT{%{_wmpropsdir},%{_datadir}/xsessions,/etc/sysconfig/wmstyle}
-%{__make} install \
+%{__make} -j1 install \
DESTDIR=$RPM_BUILD_ROOT
%{?with_gnome2:install AfterStep.desktop $RPM_BUILD_ROOT%{_wmpropsdir}}