Use %ldconfig_scriptlets.

check.spec

@@ -95,20 +95,19 @@ rm -rf checkmk/test/check_checkmk*
 rm -rf checkmk/test/empty_input
 
 %post
-/sbin/ldconfig
 if [ -e %{_infodir}/%{name}.info* ]; then
   /sbin/install-info \
     --entry='* Check: (check).               A unit testing framework for C.' \
     %{_infodir}/%{name}.info %{_infodir}/dir || :
 fi
 
-%postun -p /sbin/ldconfig
-
 %preun
 if [ $1 = 0 -a -e %{_infodir}/%{name}.info* ]; then
   /sbin/install-info --delete %{_infodir}/%{name}.info %{_infodir}/dir || :
 fi
 
+%ldconfig_scriptlets
+
 %files
 %doc AUTHORS ChangeLog
 %license COPYING.LESSER