Add #ifdef's for platforms that don't have the constants POLLRDNORM and
friends. (Modified version of patch #101682 from Neil Schemenauer)
diff --git a/Modules/selectmodule.c b/Modules/selectmodule.c
index 114ac35..008ffa4 100644
--- a/Modules/selectmodule.c
+++ b/Modules/selectmodule.c
@@ -641,10 +641,18 @@
insint(d, "POLLHUP", POLLHUP);
insint(d, "POLLNVAL", POLLNVAL);
+#ifdef POLLRDNORM
insint(d, "POLLRDNORM", POLLRDNORM);
+#endif
+#ifdef POLLRDBAND
insint(d, "POLLRDBAND", POLLRDBAND);
+#endif
+#ifdef POLLWRNORM
insint(d, "POLLWRNORM", POLLWRNORM);
+#endif
+#ifdef POLLWRBAND
insint(d, "POLLWRBAND", POLLWRBAND);
+#endif
#ifdef POLLMSG
insint(d, "POLLMSG", POLLMSG);
#endif