On 22 March 2018 at 04:19, Stefan Seefeld via Boost-build <boost-build@lists.boost.org> wrote:

How can I invoke doxygen (that is, the `doxygen` rule, not the executable) to use an existing doxyfile, instead of generating it ? 

AFAICT, no existing Boost library with doxyfile does that and provide doxyfile
only to enable invocation of standalone doxygen, outside b2.
That tells me, this is not possible (at least, not without Jamfile hacks,
which I don't have a remote idea what those could look like).

What about simply going the Boost.Hana way:

d:\dev\boost\boost\libs\hana\doc>tail -n 10 Jamfile.v2

# Since Hana does not use BoostBook, it does not integrate into the global
# book containing the documentation of all Boost libraries. Per [1], we need
# to define this empty target to accommodate the build scripts.
# [1]: http://www.boost.org/development/requirements.html#Requirements
alias boostdoc ;
explicit boostdoc ;
alias boostrelease : hana-doc ;
explicit boostrelease ;

Best regards,