parmap->end_f = xbt_parmap_futex_end;
parmap->signal_f = xbt_parmap_futex_signal;
parmap->wait_f = xbt_parmap_futex_wait;
-#endif
- xbt_die("Impossible to use futex on Mac");
break;
+#else
+ xbt_die("Futex is not available on this OS (maybe you are on a Mac).");
+#endif
case XBT_PARMAP_BUSY_WAIT:
parmap->start_f = xbt_parmap_busy_start;