RE: BUG #16920: Can't compile PostGIS with MingW64 against PostgreSQL 14 head

> -----Original Message-----
> From: Tom Lane [mailto:tgl@sss.pgh.pa.us]
> Sent: Thursday, March 11, 2021 10:02 AM
> To: r@pcorp.us
> Cc: pgsql-bugs@lists.postgresql.org
> Subject: Re: BUG #16920: Can't compile PostGIS with MingW64 against
> PostgreSQL 14 head
> 
> PG Bug reporting form <noreply@postgresql.org> writes:
> > I pulled PostgreSQL 14 earlier today to troubleshoot an issue we were
> > having and discovered I can not compile PostGIS with Mingw64 against
> > PostgreSQL 14 head.
> 
> Hmm, our mingw64 buildfarm animals aren't detecting any particular
> problem here.  Is PostGIS doing anything unusual with injecting special
> symbols via -D switches?  Or maybe including something else before
> postgres.h?  The symptoms look like a header-inclusion-order problem ...
> 
> 			regards, tom lane

The order in one of the problem files looks like this:
Starting:
https://git.osgeo.org/gitea/postgis/postgis/src/branch/master/postgis/lwgeom
_in_gml.c#L50  

#include <libxml/tree.h>
#include <libxml/parser.h>
#include <libxml/xpath.h>
#include <libxml/xpathInternals.h>

#include "postgres.h"
#include "executor/spi.h"
#include "utils/builtins.h"

#include "../postgis_config.h"
#include "lwgeom_pg.h"
#include "liblwgeom.h"
#include "lwgeom_transform.h"

Note I didn't have issue compiling PostgreSQL under mingw64 (no change)  - I
need to double-check the output, but I think all tests passed.
What extensions does the buildfarm animals test?

Thanks,
Regina