Re: [xml] LIBXML_THREAD_ENABLED and HAVE_PTHREAD_H mismatch

["Andrew W. Nosenko" <andrew w nosenko gmail com>]

On Wed, Nov 17, 2010 at 01:28, Roumen Petrov <bugtrack roumenpetrov info> wrote:
> Andrew W. Nosenko wrote:
> > On Tue, Nov 16, 2010 at 01:05, Roumen Petrov<bugtrack roumenpetrov info>
> >  wrote:
> >
> > > Kwasi Mensah wrote:
> > >
> > > > I ran into the issue where HAVE_PTHREAD_H is defined but
> > > > LIBXML_THREAD_ENABLED wasn't. The fix was already submitted as per
> > > > http://mail.gnome.org/archives/xml/2005-August/msg00136.html .
> > > >
> > > > Out of curiosity, is there a reason this patch didn't get into that main
> > > > line?
> > > >
> > > > This is with libxml2 2.7.8 on Mac OS X. I ran the configure script but
> > > > I'm
> > > > not using the make scripts as I have to make a static library that will
> > > > work
> > > > on the iPhone.
> > > >
> > > > Thanks,
> > > > kwasi
> > >
> > > May be. Note that my gcc  4.2.4 return:
> > > $ gcc -pthread -E -dM -</dev/null | grep REEN
> > >
> > > #define _REENTRANT 1
> > > $ gcc -E -dM -</dev/null | grep REEN
> > >
> > > Roumen
> >
> > $ uname -rs
> > FreeBSD 8.0-RELEASE-p1
> >
> > $ gcc --version
> > gcc (GCC) 4.2.1 20070719  [FreeBSD]
> > Copyright (C) 2007 Free Software Foundation, Inc.
> > This is free software; see the source for copying conditions.  There is NO
> > warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR
> > PURPOSE.
> >
> > $ touch zzz.h
> > $ gcc -pthread -E -dM zzz.h | grep REEN
> > $ gcc -pthread -E -dM zzz.h | wc -l
> >      111
> >
> > $ gcc45 --version
> > gcc45 (GCC) 4.5.2 20101104 (prerelease)
> > Copyright (C) 2010 Free Software Foundation, Inc.
> > This is free software; see the source for copying conditions.  There is NO
> > warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR
> > PURPOSE.
> >
> > $ gcc45 -pthread -E -dM zzz.h | grep REEN
> > $ gcc45 -pthread -E -dM zzz.h | wc -l
> >      201
>
> My limited FreeBSD knowledge is that -kthread is prefered flag.

You mistaken.  There no -kthread GCC option.

> I really don't know how to build thread aware FreeBSD application.

Same as under Linux: use -pthread.

> What is difference of internal gcc variables if above test is performed with
> and without -kthread flag ?

See above: there no -kthread flag

> Did gcc (on freebsd) defines _THREAD_SAFE ?

$ gcc -pthread -E -dM - < /dev/null | grep -i thr
$ gcc45 -pthread -E -dM - < /dev/null | grep -i thr
$

-- 
Andrew W. Nosenko <andrew w nosenko gmail com>