From: Aurelien Jarno <aurel32@debian.org>
Subject: #include <unistd.h> for kFreeBSD
Bug-Debian: https://bugs.debian.org/340693
X-Debian-version: 5.52-8

--- a/unix/unxcfg.h
+++ b/unix/unxcfg.h
@@ -52,6 +52,7 @@
 
 #include <sys/types.h>          /* off_t, time_t, dev_t, ... */
 #include <sys/stat.h>
+#include <unistd.h>
 
 #ifdef NO_OFF_T
   typedef long zoff_t;