Subject: Re: Should perl58 default to threaded under NetBSD 2.0?
To: grant beattie <grant@NetBSD.org>
From: David Brownlee <firstname.lastname@example.org>
Date: 06/23/2004 20:25:08
Does anyone have any suggestions on how to best get perl58
to link against pthread? including pthread.buildlink3.mk
or setting LDFLAGS+=-lpthreads do not have the desired effect.
On Tue, 22 Jun 2004, grant beattie wrote:
> On Tue, Jun 22, 2004 at 09:37:08AM +0100, David Brownlee wrote:
>>> the target audience for perl-threads is very, very small, and
>>> historically perl without threads has been much more stable than perl
>>> with thread support.
>> Is that cross platform, or just related to our native threads?
> not related to NetBSD native threads - I haven't used perl58-thread on
> NetBSD yet, but threaded perl has been known to be very buggy on at
> least some platforms in the past, including Solaris. whether or not this
> is still true I don't know. if it works well on NetBSD/i386, good - but
> please make it per OPSYS :) (or MACHINE_ARCH for the case of NetBSD? do
> some ports still have known pthread bugs?)
> however, threaded perl is almost guaranteed to run more slowly than
> unthreaded perl, and doesn't offer any advantage to 99% of applications.
> whether it is justifyable to make threaded perl the default is a
> different question. I think we can come up with something that doesn't
> mean slowing down everyone's perl for the sake of a few packages which
> have lessened functionality without threaded perl. :)
>> The four obvious options we have are:
>> - Default to perl58-threads on NetBSD-2.0
>> - Make p5-GD depend on perl58-thread, which makes for a nasty
>> surprise when someone installs the non threaded perl then
>> has to delete it and replace with perl58-thread (which by
>> default would involve them reinstalling all dependant packages)
>> when they want to install p5-GD.
> pkgviews can also help here, but we're not all there yet :)
>> - Remove freetype support from p5-GD
> I guess you have to make p5-GD not build w/ freetype support if perl58
> (nothreads) is already installed. maybe it can be optional, enabled if
> the default perl for your platform is -threads or if you already have
> -threads installed, disabled otherwise..? with a big fat MESSAGE..
David/absolute -- www.netbsd.org: No hype required --