From: | Andrew Dunstan <andrew(at)dunslane(dot)net> |
---|---|
To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
Cc: | Jeff Davis <pgsql(at)j-davis(dot)com>, Bruce Momjian <bruce(at)momjian(dot)us>, Peter Eisentraut <peter_e(at)gmx(dot)net>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org> |
Subject: | Re: Parallel make problem with git master |
Date: | 2011-03-08 13:48:20 |
Message-ID: | 4D7633A4.2060000@dunslane.net |
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Lists: | pgsql-hackers |
On 03/07/2011 10:28 PM, Tom Lane wrote:
> I wrote:
>> I think what is happening here is that make launches concurrent sub-jobs
>> to do "make install" in each of interfaces/libpq and interfaces/ecpg,
>> and the latter launches a sub-sub-job to do "make all" in
>> interfaces/libpq, and make has no idea that these are duplicate sub-jobs
>> so it actually tries to run both concurrently. Whereupon you get all
>> sorts of fun failures. I'm not sure if there is any cure that's not
>> worse than the disease.
> BTW, how many people here have read "Recursive Make Considered Harmful"?
>
> http://aegis.sourceforge.net/auug97.pdf
>
> Because what we're presently doing looks mighty similar to what he's
> saying doesn't work and can't be made to work.
>
>
Oh, yes, I read it a long time ago, before I started doing Postgres
work. I recall vaguely thinking about it when I began with Postgres, but
I thought people smarter than me had probably worked out the problems
:-) (Working with people smarter than me is one of the things I like
about Postgres work.)
cheers
andrew
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