Use "myselect.h" as intended.
diff --git a/Modules/selectmodule.c b/Modules/selectmodule.c
index 0a102bd..1c4028d 100644
--- a/Modules/selectmodule.c
+++ b/Modules/selectmodule.c
@@ -29,11 +29,7 @@
 #include "compile.h"
 #include "ceval.h"
 
-#include <sys/types.h>
-#include <sys/time.h>
-#include <sys/param.h>
-
-/* XXX Maybe you need to define the FD_* macros here when porting this code */
+#include "myselect.h"
 
 static object *SelectError;