--- cygwin_shm.h	2002-06-27 21:24:29.000000000 +0100
+++ /usr/include/sys/shm.h	2002-06-27 23:52:00.000000000 +0100
@@ -12,7 +12,7 @@
 #ifndef _SYS_SHM_H
 #define _SYS_SHM_H
 
-#include "cygwin_ipc.h"
+#include <sys/ipc.h>
 
 #ifdef __cplusplus
 extern "C"