--- IO-AIO/AIO.xs	2010/11/01 22:03:43	1.174
+++ IO-AIO/AIO.xs	2010/12/01 04:43:12	1.175
@@ -124,7 +124,6 @@
 
 #ifndef POSIX_FADV_NORMAL
 # define POSIX_FADV_NORMAL 0
-# define NO_FADVISE 1
 #endif
 #ifndef POSIX_FADV_SEQUENTIAL
 # define POSIX_FADV_SEQUENTIAL 0
@@ -142,13 +141,12 @@
 # define POSIX_FADV_DONTNEED 0
 #endif
 
-#if _XOPEN_SOURCE < 600 || NO_FADVISE
+#if !HAVE_POSIX_FADVISE
 # define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
 #endif
 
 #ifndef POSIX_MADV_NORMAL
 # define POSIX_MADV_NORMAL 0
-# define NO_MADVISE 1
 #endif
 #ifndef POSIX_MADV_SEQUENTIAL
 # define POSIX_MADV_SEQUENTIAL 0
@@ -163,7 +161,7 @@
 # define POSIX_MADV_DONTNEED 0
 #endif
 
-#if _XOPEN_SOURCE < 600 || NO_MADVISE
+#if !HAVE_POSIX_MADVISE
 # define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
 #endif