Re: Cygwin support

On 2025-04-21 Mo 12:29 PM, Andrew Dunstan wrote:
>
> Last year the old Windows machine where I was running the buildfarm
> member lorikeet died, and since then we've had no buildfarm coverage
> for Cygwin. I now have a new (but slow) W11pro machine and I have been
> testing out Cygwin builds on it. I wanted to have it running the TAP
> tests, unlike lorikeet. Attached is a set of very small patches aimed
> at enabling this.
>
> The first patch makes us use our getopt implementation, just like we
> do in Mingw. meson.build already has this, so this would just be
> bringing configure into line with that.
>
> The second patch makes cygwin use the WIN32 pattern for psql's \watch
> command. Without that, the Unix style implementation hangs.
>
> The third patch make Cygwin skip a permissions test in the SSL tests,
> just like we do elsewhere in Windows.
>
> The fourth test ensures that we honor MAX_CONNECTIONS in a couple of
> places where we rerun the regression suite. MAX_CONNECTIONS was
> originally designed mainly for Cygwin, where too many concurrent
> connections cause issues.
>
> The fifth patch disables one of the pgbench tests which is unstable on
> Cygwin.
>
> There are still some issues, with the pg_dump, pg_upgrade, recovery
> and subscription test sets. But apart from that, with these patches I
> can consistently get a successful run.
>
> My intention is to apply these soon, and backpatch them as
> appropriate. These are all pretty low risk. I'm going to be away for a
> while starting in a day or so, but I'd like to get a buildfarm animal
> going with these before I disappear.
>

Time has got the better of me, I won't be able to get back to this for a
couple of months.

cheers

andrew

--
Andrew Dunstan
EDB: https://www.enterprisedb.com