AC_DEFINE(HAVE_INTEL_ATOMIC_PRIMITIVES, 1, [Have Intel __sync_* atomic primitives])
fi
-AC_CHECK_HEADERS(sched.h)
-AC_CHECK_FUNCS(sched_yield)
+AC_CACHE_CHECK([for Solaris atomic operations], fc_cv_have_solaris_atomic_ops, [
+ fc_cv_have_solaris_atomic_ops=false
+ AC_TRY_LINK([
+ #include <atomic.h>
+ /* This requires Solaris Studio 12.2 or newer: */
+ #include <mbarrier.h>
+ void memory_barrier (void) { __machine_rw_barrier (); }
+ int atomic_add (volatile unsigned *i) { return atomic_add_int_nv (i, 1); }
+ void *atomic_ptr_cmpxchg (volatile void **target, void *cmp, void *newval) { return atomic_cas_ptr (target, cmp, newval); }
+ ], [], fc_cv_have_solaris_atomic_ops=true
+ )
+])
+if $fc_cv_have_solaris_atomic_ops; then
+ AC_DEFINE(HAVE_SOLARIS_ATOMIC_OPS, 1, [Have Solaris __machine_*_barrier and atomic_* operations])
+fi
+
+if test "$os_win32" = no && ! $have_pthread; then
+ AC_CHECK_HEADERS(sched.h)
+ AC_SEARCH_LIBS(sched_yield,rt,AC_DEFINE(HAVE_SCHED_YIELD, 1, [Have sched_yield]))
+fi
have_pthread=false
if test "$os_win32" = no; then