NPTL auto detection

[Mike Hearn]

Perhaps of more interest is this:

* Sun Apr 06 2003 Jakub Jelinek <jakub at redhat.com> 2.3.2-4.80.5
   - make sure all calls to __errno_location() and __h_errno_location()
     jump through .plt to make older wine happy

Not sure if it's in CVS glibc or not, somebody asked, I'll update the
list on the answer. It'd be a bit annoying if after all that work they
change glibc again to unbreak it.

On Sat, 2003-05-17 at 05:22, Dag Wieers wrote:
> Hi,
> 
> I'm not subscribed to this list but noticed the NPTL discussion on Wine 
> Traffic #170. I saw a lot of people mentioning to make it a compile-time 
> option, but no one with a definitive runtime check.
> 
> Valgrind went through the same problem and I proposed a solution on their 
> list. AFAIK they're not using it, they still have a run-time parameter 
> instead of auto-detecting it on loadtime.
> 
> The discussion is here:
> 
> 	http://sourceforge.net/mailarchive/forum.php?thread_id=2027895&forum_id=32038
> 	http://sourceforge.net/mailarchive/forum.php?thread_id=2052985&forum_id=32038
> 
> And a couple of lines to check what threading library is used:
> 
> 	//#define _XOPEN_SOURCE
> 	#define _POSIX_C_SOURCE 2
> 	#include <unistd.h>
> 	#include <stdio.h>
> 
> 	int main(void) {
> 	        char *buf; size_t n;
> 
> 	        n=confstr(_CS_GNU_LIBPTHREAD_VERSION, NULL, (size_t) 0);
> 	        if ((buf = (char *) malloc(n)) == NULL) abort();
> 	        confstr(_CS_GNU_LIBPTHREAD_VERSION, buf, n);
> 	        fprintf(stdout, "%s\n", buf); exit(0);
> 	}
> 
> Which is basicly the same as:
> 
> 	getconf GNU_LIBPTHREAD_VERSION
> 
> I'm not sure if this is new information, but I didn't see it mentioned 
> anywhere.
> 
> Kind regards,
> --   dag wieers,  dag at wieers.com,  http://dag.wieers.com/   --
> «Any errors in spelling, tact or fact are transmission errors»
> 
>