Not every OS that support poll seems to support POLLMSG.

diff --git a/Modules/selectmodule.c b/Modules/selectmodule.c
index 0c6771f112dd5c85fdb583dcab3b7d483cfdc483..1c747a5e029889c07d94ebcba99ff95c2ca0be4f 100644 (file)
--- a/Modules/selectmodule.c
+++ b/Modules/selectmodule.c
@@ -657,6 +657,8 @@ initselect(void)
        insint(d, "POLLRDBAND", POLLRDBAND);
        insint(d, "POLLWRNORM", POLLWRNORM);
        insint(d, "POLLWRBAND", POLLWRBAND);
+#ifdef POLLMSG
        insint(d, "POLLMSG", POLLMSG);
+#endif
 #endif /* HAVE_POLL */
 }