[ITA] libsigc2.0

[Jon Turney]

On 01/05/2025 13:43, Brian Inglis via Cygwin-apps wrote:
> On 2025-04-30 15:39, Philippe Baril Lecavalier via Cygwin-apps wrote:
>>
>> 2.10.3 (2020) -> 2.12.1 (2023)
>>
>> Encountered two issues, documentation related.
>>
>> 1. Anything where doxygen calls dot (graphviz), it just hangs, 
>> forever, no message. Looked at rebuilding graphviz and doxygen, tried 
>> a few things, no simple fix. It seems to be a known issue with other 
>> packages, applying this quick fix: Just toggle off any HAVE_DOT from 
>> Doxygen file.
> 
> If you look at my 2024-07 [ITP] cmocka, I found:
> 
>  > Looking at some hints and approaches for doxygen diagnostics and 
> debugging:
>  >
>  >      -DDOXYGEN_DOT_NUM_THREADS=1
>  >
>  > Eliminating all other job paramaters, that is the one that switches
>  > hangs on and off.

Yeah, this shows up when building the libxcb documentation with doxygen 
as well.

When I investigated, it seems like the dot processes have all finished, 
but doxygen is still waiting for them (so a signal gone missing maybe?).

This seems to be a regression which slipped in between 3.3.6 and 3.4.0, 
but I haven't bisected it further than that.