Bug#489625: libapr1-dev: please don't ship your own copy of libtool
The libtool shipped with the apr package has no tagged configurations
and works without --tag parameter. The libtool from the libtool
package requires --tag, though. Specifying the correct --tag
everywhere would be a larger enterprise. It would have to include all
methods to build apache modules written in both C and C++, and all
other users of apr-config/apu-config. And (at least in principle) apr
supports different libtools that don't support --tag, though I don't
know if that support is still used.
In any case, I don't think it makes sense to change this in Debian.