@@ -18,19 +18,11 @@
 
 #include "config.h"
 
 #include <stdlib.h>	/* include any libc header to get the libc defines */
 
-#ifdef HAVE_UNISTD_H
-# ifdef __GLIBC__
-#  undef __USE_XOPEN	/* Needed to avoid old glibc using __block */
-# endif
-# include <unistd.h>
-# ifdef __GLIBC__
-#  define __USE_XOPEN 1
-# endif
-#endif
+#include "unistd_wrapper.h"
 
 #include "platform.h"
 
 #ifdef OF_MACOS
 # include <sys/sysctl.h>