Re: [xml] How to detect at run-time whether libxml2 was compiled with enabled mutlithreading support?

[Rob Richards <rrichards ctindustries net>]

Daniel Veillard wrote:

> On Wed, Aug 03, 2005 at 08:01:44PM +0300, Andrew W. Nosenko wrote:
>  
>
> > Sometimes, the FreeBSD ports are looks very strange indeed... :-(
> > But "vanilla" libxml2 port from the FreeBSD-5.4 compiled w/o threads
> > support by default.
> >    
>
>  Hum, annoying ! We must know why, this could make PHP5 XML support
> unstable for example (I assume PHP5 has thread support !)
> And for detecting "at runtime" that means from a binary linking to the
> shared lib, it's really unclear unless you have introspection capability
> e.g. if the shared library has an __xmlMalloc() entry point or not.
>  
Searched on that and there is a note that is messes up other ports, PHP 
included (my guess is it was based on running an older version of PHP 4 
with domxml prior to a lot of the domxml bug fixes - that and possibly 
an older libxml2 lib). Never tried a threaded PHP build against a non 
threaded libxml2 build since early 2.5.x days so can't exactly say how 
stable it would be, though we tried our hardest to prevent issues 
cropping up when running threaded vs non-threaded in the XML stuff. PHP 
usually only compiled threaded under windows or when running under 
Apache 2 with worker mpm.

Rob