-#include <yaz++/z-assoc.h>
-#include <yaz++/pdu-assoc.h>
-#include <yaz++/gdu.h>
-#include <yaz++/gduqueue.h>
-#include <yaz++/socket-manager.h>
+#include <yazpp/z-assoc.h>
+#include <yazpp/pdu-assoc.h>
+#include <yazpp/gdu.h>
+#include <yazpp/gduqueue.h>
+#include <yazpp/socket-manager.h>
+
+#if HAVE_UNISTD_H
+#include <unistd.h>
+#endif