From mboxrd@z Thu Jan  1 00:00:00 1970
Message-ID: <56a2970005011815265df1a824@mail.gmail.com>
Date: Wed, 19 Jan 2005 08:26:25 +0900
From: Noah Evans <noah.evans@gmail.com>
To: Russ Cox <russcox@gmail.com>,
	Fans of the OS Plan 9 from Bell Labs <9fans@cse.psu.edu>
Subject: Re: [9fans] plan9port update
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You're a scholar and a gentlemen as always russ.


On Tue, 18 Jan 2005 13:49:30 -0500, Russ Cox <russcox@gmail.com> wrote:
> > I compile it under Linux 2.6.8. It works but I can't use rio anymore
> > because I can't create new "windows". I can select "New" from the menu
> > but don't get the "cross". An older version of plan9ports, I think it
> > is from july 2004, works.
> 
> Gentoo uses 2.6.8 kernels but without NPTL (Linux's new posix
> threading library) turned on by default.  Plan9port was assuming
> that the kernel version alone was enough to tell whether NPTL
> was in use, but it's not.
> 
> The latest version detects NPTL during the build and behaves
> accordingly.  (If you do want NPTL on your Gentoo system, you
> can list it in your USE line in /etc/make.conf and then rebuild
> glibc.  See the Gentoo documentation for more.)
> 
> The NPTL (aka TLS, since along with NPTL comes better support for
> thread-local storage) issue is certainly what's causing Opera to
> get tripped up too.
> 
> Libthread also tries to do better than seg fault in the case
> where you're running binaries for NPTL on non-NPTL systems:
> 
> tux=; ./o.tprimes
> ./o.tprimes: cannot use LinuxThreads as pthread library; see
> /usr/local/plan9/src/libthread/README.Linux
> tux=;
> 
> Russ
>