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From: Tom Lane <tgl@sss.pgh.pa.us>
To: Peter Eisentraut <peter.eisentraut@2ndquadrant.com>
Cc: Yuriy Zhuravlev <stalkerg@gmail.com>
Cc: Michael Paquier <michael.paquier@gmail.com>
Cc: Craig Ringer <craig.ringer@2ndquadrant.com>
Cc: Andres Freund <andres@anarazel.de>
Cc: PostgreSQL mailing lists <pgsql-hackers@postgresql.org>
Subject: Re: WIP: About CMake v2
Date: Wed, 08 Feb 2017 16:52:19 -0500
Message-ID: <22497.1486590739@sss.pgh.pa.us> (raw)
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Peter Eisentraut <peter.eisentraut@2ndquadrant.com> writes:
> On 2/8/17 6:21 AM, Yuriy Zhuravlev wrote:
>> Support two build systems it's not big deal really. I have been working
>> on this past year without any big troubles. 
>> Also we have second perl build system...

> The perl/msvc build system pulls in information from the makefiles.  So
> when you add a file or something basic like that, you don't have to
> update it.  So it's really more like 1.5 build systems.

Really it's more like 1.1 build systems, in that the MSVC scripts do that
just well enough that you *usually* don't have to think about them.  But
then when they fail, and you have to figure out why, it can be a pain.

For my own purposes, the only thing that I find seriously annoying about
the status quo is the amount of time required to run "configure".  For
me, that step is usually comparable to or even more than the time to
do the build proper, because (a) ccache and (b) multiple CPUs.
configure isn't parallelizable, and there's probably nothing that
can be done about that.  If CMake offers a substantial improvement
in configuration time then that would be attractive.  Otherwise I'd
just as soon see us put the effort into making the MSVC scripts more
robust and able to pull more data from the makefiles.

			regards, tom lane


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