--- btree.h.orig 2009-11-06 12:39:34.000000000 -0800 +++ btree.h 2009-11-06 12:40:06.000000000 -0800 @@ -377,4 +377,4 @@ typedef struct _btree { u_int32_t flags; } BTREE; -#include "extern.h" +#include "bt_extern.h"