Building Doxygen documentation

[Chris Tapp <opensource@xxxxxxxxxxxx>]

I am trying to build the doxygen documentation using:

make odk

as instructed on https://wiki.documentfoundation.org/Development/Doxygen

However, the following is reported:

*** Executable unoapploader must be registered in Repository.mk or RepositoryExternal.mk.  Stop.

What do I need to add to these files to fix this?

Chris