added dummy Set_pthread_attr()

SheepShaver/src/Unix/main_unix.cpp

@@ -1152,6 +1152,16 @@ static void *tick_func(void *arg)
 }
 
 
+/*
+ *  Pthread configuration
+ */
+
+void Set_pthread_attr(pthread_attr_t *attr, int priority)
+{
+	// nothing to do
+}
+
+
 /*
  *  Mutexes
  */

SheepShaver/src/Unix/sysdeps.h

@@ -106,6 +106,9 @@ typedef struct timespec tm_time_t;
 typedef struct timeval tm_time_t;
 #endif
 
+// Setup pthread attributes
+extern void Set_pthread_attr(pthread_attr_t *attr, int priority);
+
 // Various definitions
 typedef struct rgb_color {
 	uint8		red;