Index: src/os/linux/linux.c
--- src/os/linux/linux.c.orig	2006-10-04 19:54:54 +0200
+++ src/os/linux/linux.c	2006-10-11 19:04:23 +0200
@@ -121,7 +121,7 @@
 */
 #ifdef USE_MULTITHREADING
 	pthread_mutexattr_init(&attr);
-#ifndef OSX
+#if defined(__linux__)
 	pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_RECURSIVE_NP);
 #endif /* !OSX */
 #endif /* USE_MULTITHREADING */