Horton

Remove configure probe for dlopen, and refactor.

Thomas Munro <tmunro@postgresql.org>

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Commit: ca1e85513e1c92afb80a74935cbbb6f7e4a3ccf9
Author: Thomas Munro <tmunro@postgresql.org>
Date: 2022-08-04T21:12:45Z
Releases: 16.0 
Remove configure probe for dlopen, and refactor.

dlopen() is in SUSv2 and all targeted Unix systems have it.  We still
need replacement functions for Windows, but we don't need a configure
probe for that.

Since it's no longer needed by other operating systems, rename dlopen.c
to win32dlopen.c and move the declarations into win32_port.h.

Likewise, the macros RTLD_NOW and RTLD_GLOBAL now only need to be
defined on Windows, since all targeted Unix systems have 'em.

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 −37
configure.ac modified +1 −3
src/backend/utils/fmgr/dfmgr.c modified +2 −2
src/include/pg_config.h.in modified +0 −11
src/include/port.h modified +0 −23
src/include/port/win32_port.h modified +9 −0
src/port/win32dlopen.c (from src/port/dlopen.c) renamed +3 −7
src/tools/msvc/Mkvcbuild.pm modified +2 −1
src/tools/msvc/Solution.pm modified +0 −3

Discussion