Remove configure probe for link.

Thomas Munro <tmunro@postgresql.org>

Commit: 5963c9a154bd5590a7ea48826d9bd72c9324e071
Author: Thomas Munro <tmunro@postgresql.org>
Date: 2022-08-04T21:36:50Z
Releases: 16.0
Remove configure probe for link.

link() is in SUSv2 and all targeted Unix systems have it.  We have
replacement code for Windows that doesn't require a configure probe.
Since only Windows needs it, rename src/port/link.c to win32link.c like
other similar things.

There is no need for a vestigial HAVE_LINK macro, because we expect all
Unix and, with our replacement function, Windows systems to have it, so
we didn't have any tests around link() usage.

Reviewed-by: Tom Lane <tgl@sss.pgh.pa.us>
Reviewed-by: Andres Freund <andres@anarazel.de>
Discussion: https://postgr.es/m/CA+hUKGJ3LHeP9w5Fgzdr4G8AnEtJ=z=p6hGDEm4qYGEUX5B6fQ@mail.gmail.com

Files

PathChange+/−
configure modified +6 −13
configure.ac modified +1 −1
src/include/pg_config.h.in modified +0 −3
src/include/port.h modified +2 −1
src/port/win32link.c (from src/port/link.c) renamed +2 −6
src/tools/msvc/Mkvcbuild.pm modified +4 −2
src/tools/msvc/Solution.pm modified +0 −1

Discussion