
--- unzip-6.0.orig/unix/unxcfg.h
+++ unzip-6.0/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;

