Re: ./m4/pthread.m4 causes coreutils build failure on FreeBSD 9

[Richard Yao]

On 07/05/2012 04:35 AM, Bruno Haible wrote:
> Hi Paul,
> 
>> OK, thanks, I pushed it.
> 
> This change makes it work for FreeBSD 9, but reverts the fixes done for
> IRIX 6.5 and OSF/1 on 2011-09-01 and 2011-09-08. Can you make a fix that
> works on all three platforms? Here's the situation:
> 
> On Mac OS X, Solaris, Cygwin:
> pthread_create and pthread_join in libc.
> LIB_PTHREAD ought to be set to "".
> 
> On glibc, FreeBSD 6, NetBSD, OpenBSD, AIX:
> pthread_create and pthread_join in libpthread.
> LIB_PTHREAD ought to be set to "-lpthread".
> 
> On FreeBSD 9: pthread_create in libpthread, pthread_join in libc.
> LIB_PTHREAD ought to be set to "-lpthread".
> 
> On IRIX 6.5: pthread_create in libc, pthread_join in libpthread.
> LIB_PTHREAD ought to be set to "-lpthread".
> 
> On OSF/1: pthread_create and pthread_join are macros that expand to
> __pthread_create and __pthread_join, respectively, which are both found
> in libpthread (not libc).
> LIB_PTHREAD ought to be set to "-lpthread".
> 
> Bruno
> 

It sounds like we need a test for pthread_create() and another for
pthread_join(). If either test finds a symbol in libpthread, we should
set LIB_PTHREAD. Otherwise, we should leave it unset. The original test
that worked on OSF/1 could be used in conjunction with an additional
test for pthread_create().

Note that I originally sent this only to Bruno by mistake. I am
resending it to everyone on CC.

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