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Date:      Tue, 03 Nov 2015 21:24:45 +0000
From:      "Poul-Henning Kamp" <phk@phk.freebsd.dk>
To:        Warner Losh <imp@bsdimp.com>
Cc:        "Bjoern A. Zeeb" <bz@FreeBSD.org>, FreeBSD Current <freebsd-current@FreeBSD.org>, freebsd-arch <freebsd-arch@freebsd.org>
Subject:   Re: Build Options Survey run
Message-ID:  <88962.1446585885@critter.freebsd.dk>
In-Reply-To: <B0B7A53D-2B33-40CE-97EB-F53A43B307E6@bsdimp.com>
References:  <061AF18B-85D8-4FE7-ABF0-1086D4BC4063@FreeBSD.org> <B0B7A53D-2B33-40CE-97EB-F53A43B307E6@bsdimp.com>

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In message <B0B7A53D-2B33-40CE-97EB-F53A43B307E6@bsdimp.com>, Warner Losh =
writes:

>> phk had asked me to run a build options survey again.  It took about =

>two weeks to go through all of them.  The results are here:

Many thanks!

>> There are plans to run it more often again and improve it a bit.  No =

>promises on the actual timeline but it'll happen.

It's actually a good beginner task if anybody wants to do something
for the project which requires just a machine and some shell
programming.

My old script can be improved in a lot of ways, the most productive
would probably be to make it incremental rather than one big batch
job.  (Something like:  Test any options for which there are no
results, otherwise retest the option with the oldest result.)

>While not all combinations tested were valid combinations, many that =

>failed are. Some of them look to be relatively easy to fix, while others =

>are much harder.

If one _really_ wanted to burn CPU cycles, my testing years back revealed
many combinations where options are incompatible.  (NB: Today we have almo=
st
four times as many options as then and we're into N! territory here...)

-- =

Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
phk@FreeBSD.ORG         | TCP/IP since RFC 956
FreeBSD committer       | BSD since 4.3-tahoe    =

Never attribute to malice what can adequately be explained by incompetence=
.



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