Issue #23652: Make the select module compile against LSB headers.

Initial patch by Matt Frank.

Misc/ACKS

@@ -429,6 +429,7 @@ Doug Fort
 Chris Foster
 John Fouhy
 Andrew Francis
+Matt Frank
 Stefan Franke
 Martin Franklin
 Kent Frazier

Misc/NEWS

@@ -34,6 +34,10 @@ Core and Builtins
 Library
 -------
 
+- Issue #23652: Make it possible to compile the select module against the
+  libc headers from the Linux Standard Base, which do not include some
+  EPOLL macros.  Initial patch by Matt Frank.
+
 - Issue #15138: Speed up base64.urlsafe_b64{en,de}code considerably.
 
 - Issue #23319: Fix ctypes.BigEndianStructure, swap correctly bytes. Patch

Modules/selectmodule.c

@@ -1874,11 +1874,21 @@ initselect(void)
     PyModule_AddIntConstant(m, "EPOLLONESHOT", EPOLLONESHOT);
 #endif
     /* PyModule_AddIntConstant(m, "EPOLL_RDHUP", EPOLLRDHUP); */
+#ifdef EPOLLRDNORM
     PyModule_AddIntConstant(m, "EPOLLRDNORM", EPOLLRDNORM);
+#endif
+#ifdef EPOLLRDBAND
     PyModule_AddIntConstant(m, "EPOLLRDBAND", EPOLLRDBAND);
+#endif
+#ifdef EPOLLWRNORM
     PyModule_AddIntConstant(m, "EPOLLWRNORM", EPOLLWRNORM);
+#endif
+#ifdef EPOLLWRBAND
     PyModule_AddIntConstant(m, "EPOLLWRBAND", EPOLLWRBAND);
+#endif
+#ifdef EPOLLMSG
     PyModule_AddIntConstant(m, "EPOLLMSG", EPOLLMSG);
+#endif
 #endif /* HAVE_EPOLL */
 
 #ifdef HAVE_KQUEUE