--- IO-AIO/AIO.xs	2009/06/17 01:14:48	1.148
+++ IO-AIO/AIO.xs	2009/06/30 07:33:58	1.149
@@ -119,6 +119,7 @@
 
 #ifndef POSIX_FADV_NORMAL
 # define POSIX_FADV_NORMAL 0
+# define NO_FADVISE 1
 #endif
 
 #ifndef POSIX_FADV_SEQUENTIAL
@@ -1195,7 +1196,7 @@
         PROTOTYPE: $$$$
         CODE:
 {
-	#if _XOPEN_SOURCE >= 600
+	#if _XOPEN_SOURCE >= 600 && !NO_FADVISE
         RETVAL = posix_fadvise (fh, offset, length, advice);
 	#else
         RETVAL = errno = ENOSYS;