Re: [Doxygen-users] Compare with already existing and identical output file and *not* refresh its timestamp?

[Richard D. <Ri...@Da...>]

On 2/6/19 9:45 PM, Marc Herbert wrote:
> Hi,
>
>  I understand incremental doxygen compilation is a hard problem. I've
> read some of the past discussions. This request is *not* about
> incremental doxygen compilation and it is not about making doxygen
> faster at all. It's about something much simpler.
>
> Can doxygen redundantly recompute everything from scratch (even when
> no input has changed), and then at the very end compare and realise
> that it just regenerated the exact same (XML, HTML,...) output file
> that is already there from the previous run? Is there in this case an
> option /not/ to refresh the timestamp? I mean on a per output file
> basis of course.
>
> Refreshing the timestamp has a disastrous cascade effect on further
> processing like Sphinx which wrongly assumes everything has changed 
> even when no doxygen output has changed at all (except timestamps).
>
> Marc
The simplest method in my mind would be  to have a post-process task
that compares the Doxygen output directory with another copy, updating
that copy if there is a ''significant' (not just timestamping)
difference. It would be a simple enough program to write to customize
for you own needs.

-- 
Richard Damon