--- rpl/src/instructions_f3.c	2011/09/26 15:57:13	1.37
+++ rpl/src/instructions_f3.c	2011/10/04 19:32:35	1.38
@@ -1837,28 +1837,30 @@ instruction_fuse(struct_processus *s_eta
 		return;
 	}
 
-#	ifndef OS2
-#	ifndef Cygwin
+#	ifdef SCHED_OTHER
 	if (pthread_attr_setschedpolicy(&attributs, SCHED_OTHER) != 0)
 	{
 		(*s_etat_processus).erreur_systeme = d_es_processus;
 		return;
 	}
+#	endif
 
+#	ifdef PTHREAD_EXPLICIT_SCHED
 	if (pthread_attr_setinheritsched(&attributs,
 			PTHREAD_EXPLICIT_SCHED) != 0)
 	{
 		(*s_etat_processus).erreur_systeme = d_es_processus;
 		return;
 	}
+#	endif
 
+#	ifdef PTHREAD_SCOPE_SYSTEM
 	if (pthread_attr_setscope(&attributs, PTHREAD_SCOPE_SYSTEM) != 0)
 	{
 		(*s_etat_processus).erreur_systeme = d_es_processus;
 		return;
 	}
 #	endif
-#	endif
 
 	if (pthread_create(&(*s_etat_processus).thread_fusible, &attributs, 
 			fusible, s_etat_processus) != 0)