When doxygen generates HTML from source code it will sometimes create HTML links
that use auto-generated anchors (e.g., a reference to a member of a class). 
These URLs look like so:

<a class="code" href="classCalVector.html#25802f00441ce192a82463fea4fdfa07">x</a>

I am not sure how the anchor part of the URLs are being generated, but they are
not consistent between builds.  This means that an i386 and x86_64 build of the
same documentation will differ only by the URL anchors that doxygen generates.

This causes a multi-arch conflict.  The documentation should be identical
between arches, but doxygen is causing conflicts because the anchors are
different each time the documentation is generated.

There has to be a way of generating URL anchors in doxygen such that it is
consistent between build times and/or arches.

Please investigate how these URL anchors are generated in doxygen so that we may
assess the feasibility of enhancing doxygen to generate consistent URLs.

Please see bug #340771 as a test case.