diff --git a/libs/wine/port.c b/libs/wine/port.c
index 8a6f97b3a43..ee54806bae6 100644
--- a/libs/wine/port.c
+++ b/libs/wine/port.c
@@ -38,6 +38,7 @@
 #endif
 
 #include "wine/library.h"
+#include "wine/pthread.h"
 
 /***********************************************************************
  *           wine_switch_to_stack
@@ -92,6 +93,28 @@ __ASM_GLOBAL_FUNC( wine_switch_to_stack,
 #endif
 
 
+/***********************************************************************
+ *           wine_pthread_init_process
+ *
+ * This function is just a placeholder, it will be overridden by the pthread support code.
+ */
+void wine_pthread_init_process( const struct wine_pthread_functions *functions )
+{
+    assert(0);  /* we must never get here */
+}
+
+
+/***********************************************************************
+ *           wine_pthread_init_thread
+ *
+ * This function is just a placeholder, it will be overridden by the pthread support code.
+ */
+void wine_pthread_init_thread(void)
+{
+    assert(0);  /* we must never get here */
+}
+
+
 #if (defined(__svr4__) || defined(__NetBSD__)) && !defined(MAP_TRYFIXED)
 /***********************************************************************
  *             try_mmap_fixed