From: Tom Lane <tgl@sss.pgh.pa.us>
To: Alvaro Herrera <alvherre@2ndquadrant.com>
cc: Andres Freund <andres@anarazel.de>,
 YUriy Zhuravlev <u.zhuravlev@postgrespro.ru>, pgsql-hackers@postgresql.org
Subject: Re: WIP: About CMake v2
In-reply-to: <20150828162849.GE2912@alvherre.pgsql>
References: <4184974.kkvGJ5GoEX@dinodell>
 <20150828153245.GD2912@alvherre.pgsql>
 <20150828153926.GG4857@alap3.anarazel.de>
 <20150828162849.GE2912@alvherre.pgsql>
Comments: In-reply-to Alvaro Herrera <alvherre@2ndquadrant.com>
 message dated "Fri, 28 Aug 2015 13:28:49 -0300"
Date: Fri, 28 Aug 2015 12:56:02 -0400
Message-ID: <24767.1440780962@sss.pgh.pa.us>
Precedence: bulk
Sender: pgsql-hackers-owner@postgresql.org

Alvaro Herrera <alvherre@2ndquadrant.com> writes:
> I wonder about two other things: one is speed of the build (not that
> currently it's all that great, given all the mess with recursive make
> invocations, but perhaps it can be even worse); the other is how ugly
> the generated files are going to be, and are we going to carry them in
> our repo -- right now we only have configure, but are we going to keep
> extra files to cope with builds in systems that don't have cmake
> installed (as we cope with missing bison and flex)?

As near as I can tell, the generated files are platform-specific.
(They're certainly different for Unix and Windows; the overview
I'm looking at doesn't say in so many words whether they can vary
at a finer grain, but I bet they do.)  So I'm afraid cmake would
likely become a build requirement, even for tarball users.  That
is probably not a show-stopper, but it's a point against the idea.

I have no idea whether switching to cmake would be a good thing or not.
It's possible that it'd end up being even uglier than our current
autoconf+gmake+msvc-scripts mess ... although when phrased that way,
that sounds like a pretty low bar to clear.  Anyway, if YUriy is willing
to do the preliminary investigation, let's see what he comes up with.

			regards, tom lane


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