Horton

Minor configure/meson cleanup

Thomas Munro <thomas.munro@gmail.com>

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From: Thomas Munro <thomas.munro@gmail.com>
To: pgsql-hackers <pgsql-hackers@postgresql.org>
Date: 2023-08-07T09:18:58Z
Lists: pgsql-hackers

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0001: There is no point in searching -lrt and -lposix4 for fdatasync()
if it's supposed to help Solaris only.  They moved all the realtime
stuff into the main C library at least as far back as Solaris
10/OpenSolaris.

0002: There is no point in probing -lposix4 for anything.  That was
superseded by -lrt even longer ago.

We could go further:  I suspect the only remaining -lrt search we
still need in practice is for shm_open() on glibc < 2.34, but here I
just wanted to clean out some old Sun stuff that was called out by
name.

Commits

  1. Remove traces of Sun -lposix4.

  2. Don't probe extra libraries for fdatasync.