+#ifdef HAVE_THREADS
+#define THREAD_MUTEX_INIT(var) { \
+ pthread_mutexattr_t mutex_attr; \
+ pthread_mutexattr_init(&mutex_attr);\
+ pthread_mutexattr_setkind_np(&mutex_attr, PTHREAD_MUTEX_RECURSIVE_NP);\
+ pthread_mutex_init(&var, mutex_attr); \
+}
+#define SYNCHRONIZE(var) pthread_mutex_lock(&var)
+#define DESYNCHRONIZE(var) pthread_mutex_unlock(&var)
+#include <pthread.h>
+#else
+#define THREAD_MUTEX_INIT(var)
+#define SYNCHRONIZE(var)
+#define DESYNCHRONIZE(var)
+#endif