Date: Wed, 25 May 2022 22:40:13 -0500
From: Justin Pryzby <pryzby@telsasoft.com>
To: Andres Freund <andres@anarazel.de>
Cc: Tom Lane <tgl@sss.pgh.pa.us>, Robert Haas <robertmhaas@gmail.com>,
	Andrew Dunstan <andrew@dunslane.net>, pgsql-hackers@postgresql.org,
	Thomas Munro <thomas.munro@gmail.com>,
	Melanie Plageman <melanieplageman@gmail.com>,
	Peter Eisentraut <peter.eisentraut@enterprisedb.com>,
	Daniel Gustafsson <daniel@yesql.se>
Subject: Re: ccache, MSVC, and meson
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On Sun, May 22, 2022 at 06:26:06PM -0500, Justin Pryzby wrote:
> ccache 4.6.1 was released which allows compiling postgres

4.6.1 is now in choco.  This is required to use with the current msbuild
process.

> But with the existing build system, it's no faster anyway, I guess due to poor
> use of parallelism.
> https://cirrus-ci.com/task/5972008205811712

Actually, it cuts the msbuild compilation time in half [0] (which is not
impressive, but also not nothing).  cache misses are slower, though.
https://cirrus-ci.com/task/5926287305867264

[0] My compiled ccache may have been a non-optimized build...

I don't know how to do make this work for msbuild without naming the binary
something other than ccache.  Maybe that's fine, but better done on the OS
image, rather than in the CI config.