#ifdef HAVE_TLS_SUPPORT
# ifndef HAVE_FORCED_UNWIND
#  define HAVE_FORCED_UNWIND 1
# endif
# define __need_struct_pthread_size
# include <nptl/descr.h>
#endif

--

#ifdef HAVE_TLS_SUPPORT
NPTL_STRUCT_PTHREAD_SIZE	sizeof (struct pthread)
#endif