--- src/tX_endian.h-dist	2004-01-15 19:53:09.000000000 +0100
+++ src/tX_endian.h	2004-01-15 19:53:24.000000000 +0100
@@ -44,9 +44,9 @@
 
 #	include "tX_types.h"
 
-#define __USE_XOPEN // we need this for swab()
+// #define __USE_XOPEN // we need this for swab()
 #	include <unistd.h>
-#undef __USE_XOPEN
+// #undef __USE_XOPEN
 
 #define swapbuffer(b, s) swab((void *) b, (void *) b, (ssize_t) s<<1)
 
