Date: Mon, 22 Jan 2001 20:04:25 -0800 From: Jeremy Lea <reg@FreeBSD.ORG> To: Daniel Eischen <eischen@vigrid.com> Cc: ports@FreeBSD.ORG Subject: Re: HEADS UP: -pthread is going to break under -current soon Message-ID: <20010122200425.A63549@shale.csir.co.za> In-Reply-To: <3A6CA399.7F8B801E@vigrid.com>; from eischen@vigrid.com on Mon, Jan 22, 2001 at 04:18:17PM -0500 References: <3A6CA399.7F8B801E@vigrid.com>
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Hi,
On Mon, Jan 22, 2001 at 04:18:17PM -0500, Daniel Eischen wrote:
> In a couple of days, I'll be committing changes to libc and libc_r
> to allow them to be linked together via -lc_r. libc_r will only
> contain the thread functions and will not contain any libc functions
> as it does currently. We currently use -pthread as a non-standard
> hack to link to libc_r and to prevent linking to libc. After I
> commit these changes, using -pthread will not work; it will produce
> an executable that is only linked to libc_r but which also needs to
> be linked to libc. This also means that all (shared) threaded apps
> will need to be recompiled under -current.
I would like to object to this change. Using -pthread to link threaded
applications has been well advertised as a FreeBSD way of doing things,
and you are going to break lots of ports, many of which will be non
trivial to fix to work on both -current and -stable.
What is wrong with leaving '-pthread' as an alias for '-lc_r'?
Also, with regards to the naming of the new library. Even if we get a
new KSE based thread library, we should only ever have one library to
which applications should be linked if they want threads. If they get
userland or kernel threading, or a combination of the two, is irrelevant
(or should be from the point of view of third party applications). I
would therefore suggest that we move now to using libpthread.
Regards,
-Jeremy
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