------- Comment #1 from jakub at gcc dot gnu dot org 2009-12-28 17:33 -------
So, your pthread.h doesn't contain prototype for pthread_getaffinity_np, yet
libpthread.so.0 exports it? Otherwise:
# Check for pthread_{,attr_}[sg]etaffinity_np.
AC_LINK_IFELSE(
[AC_LANG_PROGRAM(
[#define _GNU_SOURCE
#include <pthread.h>],
[cpu_set_t cpuset;
pthread_attr_t attr;
pthread_getaffinity_np (pthread_self (), sizeof (cpu_set_t), &cpuset);
if (CPU_ISSET (0, &cpuset))
CPU_SET (1, &cpuset);
else
CPU_ZERO (&cpuset);
pthread_setaffinity_np (pthread_self (), sizeof (cpu_set_t), &cpuset);
pthread_attr_init (&attr);
pthread_attr_getaffinity_np (&attr, sizeof (cpu_set_t), &cpuset);
pthread_attr_setaffinity_np (&attr, sizeof (cpu_set_t), &cpuset);])],
AC_DEFINE(HAVE_PTHREAD_AFFINITY_NP, 1,
[ Define if pthread_{,attr_}{g,s}etaffinity_np is supported.]))
would fail...
pthread_getaffinity_np has been added to both pthread.h and libpthread.so.0 at
the same time, 2003-05-09. libgomp/config/linux/proc.c starts with
#ifndef _GNU_SOURCE #define _GNU_SOURCE 1 #endif, so the right CPU feature test
macro is certainly defined.
--
jakub at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |WAITING
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42519
