The tag is present in Lintian version 2.104.318. That is the most recent version we know about.
The given maintainer script calls ldconfig. However, explicit calls in maintainer scripts should be replaced by a dpkg trigger.
Please replace the "ldconfig" call with an
ldconfig trigger. With debhelper it is usually sufficient
to simply add that line to
If you use debhelper, this warning will appear if the package was compiled with debhelper before 9.20151004. Assuming all ldconfig invocations have been added by debhelper, this warning will disappear once the package is rebuilt with a newer version of debhelper.
Please refer to https://lists.debian.org/debian-devel/2015/08/msg00412.html for details.