GC_nprocs = pthread_num_processors_np();
# endif
# if defined(GC_OSF1_THREADS) || defined(GC_AIX_THREADS) \
- || defined(GC_SOLARIS_PTHREADS)
+ || defined(GC_SOLARIS_PTHREADS) || defined(GC_GNU_THREADS)
GC_nprocs = sysconf(_SC_NPROCESSORS_ONLN);
if (GC_nprocs <= 0) GC_nprocs = 1;
# endif