On 31.10.2007, at 15:45, Anders F Björklund wrote:
Parallell builds are an optional feature, and will never be
disabled by default.
*enabled* by default, darnit.
So the discussion has narrowed to:
1.) disabled by default on an "per-installation" option:
Can be toggled system-wide (with default "off"); ports have to
actively deny a parallel build attempt;
2.) disabled by default on a per-port option
Can be toggled system-wide (with default ?); ports have to actively
declare to be build-able in parallel;
The point is: The primary goal when building software is working
installations, everything else is of less priority. For getting the
build time reduced, you get defunct software, which is a bad trade-off.
Therefore even the power-user with an 8-core Xeon will rather wait a
bit longer than get defunct software. So enabling parallel builds
will suck, as stuff starts to break.
I'd rather give them a real benefit that IF they enable parallel
builds, they get working software _always_.
Therefore I think 2.) is the option of choice so everyone gets happy.
The default in 2.) can be set manually or with some auto-number-of-
cores detection, I dont care specifically.
-Markus
--
Markus W. Weissmann
http://www.mweissmann.de/
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