Message-ID: <411C8EE0.50507@betrusted.com>
Date: Fri, 13 Aug 2004 11:50:24 +0200
From: =?ISO-8859-1?Q?Martin_M=FCnstermann?= <mmuenstermann@betrusted.com>
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To: Bruce Momjian <pgman@candle.pha.pa.us>
Cc: Robert Treat <xzilla@users.sourceforge.net>,
	PostgreSQL-patches <pgsql-patches@postgresql.org>
Subject: Re: [BUGS] 8.0.0beta1: -lpthread missing
References: <200408121647.i7CGlEB23426@candle.pha.pa.us>
In-Reply-To: <200408121647.i7CGlEB23426@candle.pha.pa.us>
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> OK, we now have thread compile failure reports on Debian and Slackware.
> 
> The config/acx_pthread.m4 script basically tests these:
> 
> 	acx_pthread_flags=3D"pthreads none -Kthread -kthread lthread -pthread
> 		-pthreads -mthreads pthread --thread-safe -mt pthread-config"
> =09
> in that order and exits once it finds the first one that can
> compile/link this:
> 
>         AC_TRY_LINK([#include <pthread.h>],
>                     [pthread_t th; pthread_join(th, 0);
>                      pthread_attr_init(0); pthread_cleanup_push(0, 0);
>                      pthread_create(0,0,0,0); pthread_cleanup_pop(0); ],
>                     [acx_pthread_ok=3Dyes])
> 
> Now, the big question is why -pthread can compile/link this successfully
> but -pthread isn't enough to build a library that uses threads.

I suspect that on Solaris, without "-lpthread" the pthread-stubs in 
/usr/lib/libc.so might be called at runtime instead of the functional 
ones in libpthread.so.

Could this easily be checked?

Martin